/* * Copyright (c) 2000-2013 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@ */ /* * 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 /* see net/route.h, or net/if_inarp.h */ #ifndef RTF_ANNOUNCE #define RTF_ANNOUNCE RTF_PROTO2 #endif #include #ifdef BSD_KERNEL_PRIVATE #include #include #include 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 ifnet *ln_exclifp; /* excluded interface (prefix proxy) */ struct mbuf *ln_hold; /* last packet until resolved/timeout */ uint32_t ln_asked; /* # of queries already sent for this addr */ short ln_state; /* reachability state */ short ln_router; /* 2^0: ND6 router bit */ u_int32_t ln_flags; /* flags; see below */ u_int64_t ln_expire; /* lifetime for NDP state transition */ u_int64_t ln_lastused; /* last used timestamp */ struct if_llreach *ln_llreach; /* link-layer reachability record */ }; /* 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 /* BSD_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 * 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 #ifdef BSD_KERNEL_PRIVATE #define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE) #define ND6_LLINFO_PERMANENT(n) \ (((n)->ln_expire == 0) && ((n)->ln_state > ND6_LLINFO_INCOMPLETE)) #define ND6_EUI64_GBIT 0x01 #define ND6_EUI64_UBIT 0x02 #define ND6_EUI64_TO_IFID(in6) \ do {(in6)->s6_addr[8] ^= ND6_EUI64_UBIT; } while (0) #define ND6_EUI64_GROUP(in6) ((in6)->s6_addr[8] & ND6_EUI64_GBIT) #define ND6_EUI64_INDIVIDUAL(in6) (!ND6_EUI64_GROUP(in6)) #define ND6_EUI64_LOCAL(in6) ((in6)->s6_addr[8] & ND6_EUI64_UBIT) #define ND6_EUI64_UNIVERSAL(in6) (!ND6_EUI64_LOCAL(in6)) #define ND6_IFID_LOCAL(in6) (!ND6_EUI64_LOCAL(in6)) #define ND6_IFID_UNIVERSAL(in6) (!ND6_EUI64_UNIVERSAL(in6)) #endif /* BSD_KERNEL_PRIVATE */ #if !defined(BSD_KERNEL_PRIVATE) struct nd_ifinfo { #else /* For binary compatibility, this structure must not change */ struct nd_ifinfo_compat { #endif /* !BSD_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 SHA1 digest */ u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */ u_int8_t randomid[8]; /* current random ID */ }; #if defined(BSD_KERNEL_PRIVATE) struct nd_ifinfo { decl_lck_mtx_data(, lock); boolean_t initialized; /* Flag to see the entry is initialized */ 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 _pad[3]; /* the following 3 members are for privacy extension for addrconf */ u_int8_t randomseed0[8]; /* upper 64 bits of SHA1 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; struct in6_cga_modifier local_cga_modifier; }; #endif /* BSD_KERNEL_PRIVATE */ #define ND6_IFF_PERFORMNUD 0x1 #if defined(PRIVATE) /* * APPLE: not used. Interface specific router advertisements are handled with a * specific ifnet flag: IFEF_ACCEPT_RTADVD */ #define ND6_IFF_ACCEPT_RTADV 0x2 /* APPLE: NOT USED not related to ND. */ #define ND6_IFF_PREFER_SOURCE 0x4 /* IPv6 operation is disabled due to * DAD failure. (XXX: not ND-specific) */ #define ND6_IFF_IFDISABLED 0x8 #define ND6_IFF_DONT_SET_IFROUTE 0x10 /* NOT USED */ #endif /* PRIVATE */ #define ND6_IFF_PROXY_PREFIXES 0x20 #define ND6_IFF_IGNORE_NA 0x40 #if defined(PRIVATE) #define ND6_IFF_INSECURE 0x80 #endif struct in6_nbrinfo { char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ struct in6_addr addr; /* IPv6 address of the neighbor */ long asked; /* # 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 */ }; #if defined(BSD_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 /* BSD_KERNEL_PRIVATE */ #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]; }; #if defined(BSD_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 /* BSD_KERNEL_PRIVATE */ /* valid values for stateflags */ #define NDDRF_INSTALLED 0x1 /* installed in the routing table */ #define NDDRF_IFSCOPE 0x2 /* installed as a scoped route */ #define NDDRF_STATIC 0x4 /* for internal use only */ #ifdef BSD_KERNEL_PRIVATE #define NDDRF_PROCESSED 0x10 #endif struct in6_defrouter { struct sockaddr_in6 rtaddr; u_char flags; u_char stateflags; u_short rtlifetime; u_long expire; u_short if_index; }; #if defined(BSD_KERNEL_PRIVATE) struct in6_defrouter_32 { struct sockaddr_in6 rtaddr; u_char flags; u_char stateflags; u_short rtlifetime; u_int32_t expire; u_short if_index; }; struct in6_defrouter_64 { struct sockaddr_in6 rtaddr; u_char flags; u_char stateflags; u_short rtlifetime; u_long expire __attribute__((aligned(8))); u_short if_index __attribute__((aligned(8))); } __attribute__((aligned(8))); #endif /* BSD_KERNEL_PRIVATE */ 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]; }; #if defined(BSD_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 /* BSD_KERNEL_PRIVATE */ 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[] */ }; #if defined(BSD_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; /* number of advertisement routers */ /* 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 /* BSD_KERNEL_PRIVATE */ 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; }; #if !defined(BSD_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 /* !BSD_KERNEL_PRIVATE */ struct in6_ndifreq { char ifname[IFNAMSIZ]; u_long ifindex; }; #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ #define RTR_SOLICITATION_INTERVAL 4 /* 4sec */ #if defined(BSD_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 /* BSD_KERNEL_PRIVATE */ /* Prefix status */ #define NDPRF_ONLINK 0x1 #define NDPRF_DETACHED 0x2 #define NDPRF_STATIC 0x100 #define NDPRF_IFSCOPE 0x1000 #define NDPRF_PRPROXY 0x2000 #ifdef BSD_KERNEL_PRIVATE #define NDPRF_PROCESSED_ONLINK 0x08000 #define NDPRF_PROCESSED_SERVICE 0x10000 #endif /* 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 #define ND6_MAX_LIFETIME 0x7fffffff #ifdef BSD_KERNEL_PRIVATE /* * Protects nd_ifinfo[] */ 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) == NULL || !ND_IFINFO(ifp)->initialized) * linkmtu = ifp->if_mtu; * else 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 || !ND_IFINFO(ifp)->initialized) ? \ (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 */ #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)) + (RandomULong() & \ ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) TAILQ_HEAD(nd_drhead, nd_defrouter); struct nd_defrouter { decl_lck_mtx_data(, nddr_lock); TAILQ_ENTRY(nd_defrouter) dr_entry; struct in6_addr rtaddr; u_int32_t nddr_refcount; u_int32_t nddr_debug; u_int64_t expire; u_int64_t base_calendartime; /* calendar time at creation */ u_int64_t base_uptime; /* uptime at creation */ u_char flags; /* flags on RA message */ u_char stateflags; u_short rtlifetime; unsigned int genid; int err; struct ifnet *ifp; void (*nddr_trace)(struct nd_defrouter *, int); /* trace callback fn */ }; #define NDDR_LOCK_ASSERT_HELD(_nddr) \ lck_mtx_assert(&(_nddr)->nddr_lock, LCK_MTX_ASSERT_OWNED) #define NDDR_LOCK_ASSERT_NOTHELD(_nddr) \ lck_mtx_assert(&(_nddr)->nddr_lock, LCK_MTX_ASSERT_NOTOWNED) #define NDDR_LOCK(_nddr) \ lck_mtx_lock(&(_nddr)->nddr_lock) #define NDDR_LOCK_SPIN(_nddr) \ lck_mtx_lock_spin(&(_nddr)->nddr_lock) #define NDDR_CONVERT_LOCK(_nddr) do { \ NDPR_LOCK_ASSERT_HELD(_nddr); \ lck_mtx_convert_spin(&(_nddr)->nddr_lock); \ } while (0) #define NDDR_UNLOCK(_nddr) \ lck_mtx_unlock(&(_nddr)->nddr_lock) #define NDDR_ADDREF(_nddr) \ nddr_addref(_nddr, 0) #define NDDR_ADDREF_LOCKED(_nddr) \ nddr_addref(_nddr, 1) #define NDDR_REMREF(_nddr) do { \ (void) nddr_remref(_nddr, 0); \ } while (0) #define NDDR_REMREF_LOCKED(_nddr) \ nddr_remref(_nddr, 1) /* define struct prproxy_sols_tree */ RB_HEAD(prproxy_sols_tree, nd6_prproxy_soltgt); struct nd_prefix { decl_lck_mtx_data(, ndpr_lock); u_int32_t ndpr_refcount; /* reference count */ u_int32_t ndpr_debug; /* see ifa_debug flags */ struct ifnet *ndpr_ifp; struct rtentry *ndpr_rt; 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 */ u_int64_t ndpr_preferred; /* preferred time of the prefix */ u_int64_t ndpr_expire; /* expiration time of the prefix */ u_int64_t ndpr_lastupdate; /* rx time of last advertisement */ u_int64_t ndpr_base_calendartime; /* calendar time at creation */ u_int64_t ndpr_base_uptime; /* uptime at creation */ struct prf_ra ndpr_flags; unsigned int ndpr_genid; /* protects ndpr_advrtrs */ 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_addrcnt; /* reference counter from addresses */ u_int32_t ndpr_allmulti_cnt; /* total all-multi reqs */ u_int32_t ndpr_prproxy_sols_cnt; /* total # of proxied NS */ struct prproxy_sols_tree ndpr_prproxy_sols; /* tree of proxied NS */ void (*ndpr_trace)(struct nd_prefix *, int); /* trace callback fn */ }; #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 #define ndpr_raf_router ndpr_flags.router /* * We keep expired prefix for certain amount of time, for validation purposes. * 1800s = MaxRtrAdvInterval */ #define NDPR_KEEP_EXPIRED (1800 * 2) #define NDPR_LOCK_ASSERT_HELD(_ndpr) \ lck_mtx_assert(&(_ndpr)->ndpr_lock, LCK_MTX_ASSERT_OWNED) #define NDPR_LOCK_ASSERT_NOTHELD(_ndpr) \ lck_mtx_assert(&(_ndpr)->ndpr_lock, LCK_MTX_ASSERT_NOTOWNED) #define NDPR_LOCK(_ndpr) \ lck_mtx_lock(&(_ndpr)->ndpr_lock) #define NDPR_LOCK_SPIN(_ndpr) \ lck_mtx_lock_spin(&(_ndpr)->ndpr_lock) #define NDPR_CONVERT_LOCK(_ndpr) do { \ NDPR_LOCK_ASSERT_HELD(_ndpr); \ lck_mtx_convert_spin(&(_ndpr)->ndpr_lock); \ } while (0) #define NDPR_UNLOCK(_ndpr) \ lck_mtx_unlock(&(_ndpr)->ndpr_lock) #define NDPR_ADDREF(_ndpr) \ ndpr_addref(_ndpr, 0) #define NDPR_ADDREF_LOCKED(_ndpr) \ ndpr_addref(_ndpr, 1) #define NDPR_REMREF(_ndpr) do { \ (void) ndpr_remref(_ndpr, 0); \ } while (0) #define NDPR_REMREF_LOCKED(_ndpr) \ ndpr_remref(_ndpr, 1) /* * 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_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 */ }; #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); struct nd_prefix_list { struct nd_prefix_list *next; struct nd_prefix pr; }; #endif /* BSD_KERNEL_PRIVATE */ #if defined(PRIVATE) /* ND6 kernel event subclass value */ #define KEV_ND6_SUBCLASS 7 /* ND6 kernel event action type */ #define KEV_ND6_RA 1 /* ND6 RA L2 source address length */ #define ND6_ROUTER_LL_SIZE 64 struct nd6_ra_prefix { struct sockaddr_in6 prefix; struct prf_ra raflags; u_int32_t prefixlen; u_int32_t origin; u_int64_t vltime; u_int64_t pltime; u_int64_t expire; u_int32_t flags; u_int32_t refcnt; u_int32_t if_index; u_int32_t pad; }; /* ND6 router advertisement valid bits */ #define KEV_ND6_DATA_VALID_MTU (0x1 << 0) #define KEV_ND6_DATA_VALID_PREFIX (0x1 << 1) struct kev_nd6_ra_data { u_int8_t lladdr[ND6_ROUTER_LL_SIZE]; u_int32_t lladdrlen; u_int32_t mtu; u_int32_t list_index; u_int32_t list_length; u_int32_t flags; struct nd6_ra_prefix prefix; u_int32_t pad; }; #endif /* PRIVATE */ #if defined(BSD_KERNEL_PRIVATE) /* nd6.c */ extern int nd6_prune; extern int nd6_prune_lazy; extern int nd6_delay; extern int nd6_umaxtries; extern int nd6_mmaxtries; extern int nd6_useloopback; extern int nd6_accept_6to4; 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; extern size_t nd_ifinfo_indexlim; extern int nd6_onlink_ns_rfc4861; extern int nd6_optimistic_dad; #define nd6log(x) do { if (nd6_debug >= 1) log x; } while (0) #define nd6log2(x) do { if (nd6_debug >= 2) log x; } while (0) #define ND6_OPTIMISTIC_DAD_LINKLOCAL (1 << 0) #define ND6_OPTIMISTIC_DAD_AUTOCONF (1 << 1) #define ND6_OPTIMISTIC_DAD_TEMPORARY (1 << 2) #define ND6_OPTIMISTIC_DAD_DYNAMIC (1 << 3) #define ND6_OPTIMISTIC_DAD_SECURED (1 << 4) /* nd6_rtr.c */ extern int nd6_defifindex; extern int ip6_desync_factor; /* seconds */ /* ND6_INFINITE_LIFETIME does not apply to temporary addresses */ 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[8]; /* 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 *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_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 */ extern int nd6_sched_timeout_want; extern void nd6_sched_timeout(struct timeval *, struct timeval *); extern void nd6_init(void); extern void nd6_ifreset(struct ifnet *); 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_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 *, struct flowadv *); 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 *); extern void nd6_post_msg(u_int32_t, struct nd_prefix_list *, u_int32_t, u_int32_t, char *, u_int32_t); extern int nd6_setifinfo(struct ifnet *, u_int32_t, u_int32_t); extern void ln_setexpire(struct llinfo_nd6 *, uint64_t); /* nd6_nbr.c */ extern void nd6_nbr_init(void); 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); 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 *); extern void nd6_llreach_alloc(struct rtentry *, struct ifnet *, void *, unsigned int, boolean_t); extern void nd6_llreach_set_reachable(struct ifnet *, void *, unsigned int); extern void nd6_llreach_use(struct llinfo_nd6 *); extern void nd6_alt_node_addr_decompose(struct ifnet *, struct sockaddr *, struct sockaddr_dl *, struct sockaddr_in6 *); extern void nd6_alt_node_present(struct ifnet *, struct sockaddr_in6 *, struct sockaddr_dl *, int32_t, int, int); extern void nd6_alt_node_absent(struct ifnet *, struct sockaddr_in6 *); /* nd6_rtr.c */ extern void nd6_rtr_init(void); 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_select(struct ifnet *); extern void defrouter_reset(void); extern int defrtrlist_ioctl(u_long, caddr_t); extern void defrtrlist_del(struct nd_defrouter *); extern int defrtrlist_add_static(struct nd_defrouter *); extern int defrtrlist_del_static(struct nd_defrouter *); extern void prelist_remove(struct nd_prefix *); extern int prelist_update(struct nd_prefix *, struct nd_defrouter *, struct mbuf *, int); extern int nd6_prelist_add(struct nd_prefix *, struct nd_defrouter *, struct nd_prefix **, boolean_t); extern int nd6_prefix_onlink(struct nd_prefix *); extern int nd6_prefix_onlink_scoped(struct nd_prefix *, unsigned int); extern int nd6_prefix_offlink(struct nd_prefix *); extern void pfxlist_onlink_check(void); 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); extern void nddr_addref(struct nd_defrouter *, int); extern struct nd_defrouter *nddr_remref(struct nd_defrouter *, int); extern uint64_t nddr_getexpire(struct nd_defrouter *); extern void ndpr_addref(struct nd_prefix *, int); extern struct nd_prefix *ndpr_remref(struct nd_prefix *, int); extern uint64_t ndpr_getexpire(struct nd_prefix *); /* nd6_prproxy.c */ struct ip6_hdr; extern u_int32_t nd6_prproxy; extern void nd6_prproxy_init(void); extern int nd6_if_prproxy(struct ifnet *, boolean_t); extern void nd6_prproxy_prelist_update(struct nd_prefix *, struct nd_prefix *); extern boolean_t nd6_prproxy_ifaddr(struct in6_ifaddr *); extern void nd6_proxy_find_fwdroute(struct ifnet *, struct route_in6 *); extern boolean_t nd6_prproxy_isours(struct mbuf *, struct ip6_hdr *, struct route_in6 *, unsigned int); extern void nd6_prproxy_ns_output(struct ifnet *, struct ifnet *, struct in6_addr *, struct in6_addr *, struct llinfo_nd6 *); extern void nd6_prproxy_ns_input(struct ifnet *, struct in6_addr *, char *, int, struct in6_addr *, struct in6_addr *); extern void nd6_prproxy_na_input(struct ifnet *, struct in6_addr *, struct in6_addr *, struct in6_addr *, int); extern void nd6_prproxy_sols_reap(struct nd_prefix *); extern void nd6_prproxy_sols_prune(struct nd_prefix *, u_int32_t); extern int nd6_if_disable(struct ifnet *, boolean_t); #endif /* BSD_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 */ /* nd6_send.c */ #ifdef BSD_KERNEL_PRIVATE /* * nd6_send_opmode * * value using CGA tx SEND rx SEND * -------- --------- ------- ------- * DISABLED NO NO NO * QUIET YES NO NO */ extern int nd6_send_opstate; #define ND6_SEND_OPMODE_DISABLED 0 #define ND6_SEND_OPMODE_CGA_QUIET 1 #endif /* BSD_KERNEL_PRIVATE */ #endif /* _NETINET6_ND6_H_ */