/* $NetBSD: nd6.h,v 1.91 2020/09/11 15:03:33 roy Exp $ */ /* $KAME: nd6.h,v 1.95 2002/06/08 11:31:06 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 #include #ifndef _KERNEL /* Backwards compat */ #include #define ND6_LLINFO_PURGE ND_LLINFO_PURGE #define ND6_LLINFO_NOSTATE ND_LLINFO_NOSTATE #define ND6_LLINFO_WAITDELETE ND_LLINFO_WAITDELETE #define ND6_LLINFO_INCOMPLETE ND_LLINFO_INCOMPLETE #define ND6_LLINFO_REACHABLE ND_LLINFO_REACHABLE #define ND6_LLINFO_STALE ND_LLINFO_STALE #define ND6_LLINFO_DELAY ND_LLINFO_DELAY #define ND6_LLINFO_PROBE ND_LLINFO_PROBE #endif struct nd_ifinfo { uint8_t chlim; /* CurHopLimit */ uint32_t basereachable; /* BaseReachableTime */ uint32_t retrans; /* Retrans Timer */ uint32_t flags; /* Flags */ }; #ifdef _KERNEL struct nd_kifinfo { uint8_t chlim; /* CurHopLimit */ uint32_t basereachable; /* BaseReachableTime */ uint32_t retrans; /* Retrans Timer */ uint32_t flags; /* Flags */ int recalctm; /* BaseReacable re-calculation timer */ uint32_t reachable; /* Reachable Time */ }; #endif #define ND6_IFF_PERFORMNUD 0x01 /* 0x02 was ND6_IFF_ACCEPT_RTADV */ #define ND6_IFF_PREFER_SOURCE 0x04 /* XXX: not related to ND. */ #define ND6_IFF_IFDISABLED 0x08 /* IPv6 operation is disabled due to * DAD failure. (XXX: not ND-specific) */ /* 0x10 was ND6_IFF_OVERRIDE_RTADV */ #define ND6_IFF_AUTO_LINKLOCAL 0x20 #ifdef _KERNEL #define ND_IFINFO(ifp) \ (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->nd_ifinfo) #endif 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 */ }; struct in6_ndireq { char ifname[IFNAMSIZ]; struct nd_ifinfo ndi; }; /* protocol constants */ #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ #define ND6_INFINITE_LIFETIME ((u_int32_t)~0) #ifdef _KERNEL #include MALLOC_DECLARE(M_IP6NDP); /* nd6.c */ extern int nd6_prune; extern int nd6_useloopback; extern int nd6_debug; extern struct nd_domain nd6_nd_domain; #define nd6log(level, fmt, args...) \ do { if (nd6_debug) log(level, "%s: " fmt, __func__, ##args);} while (0) extern krwlock_t nd6_lock; #define ND6_RLOCK() rw_enter(&nd6_lock, RW_READER) #define ND6_WLOCK() rw_enter(&nd6_lock, RW_WRITER) #define ND6_UNLOCK() rw_exit(&nd6_lock) #define ND6_ASSERT_WLOCK() KASSERT(rw_write_held(&nd6_lock)) #define ND6_ASSERT_LOCK() KASSERT(rw_lock_held(&nd6_lock)) union nd_opts { struct nd_opt_hdr *nd_opt_array[16]; /* max = ND_OPT_NONCE */ 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 *__res6; struct nd_opt_hdr *__res7; struct nd_opt_hdr *__res8; struct nd_opt_hdr *__res9; struct nd_opt_hdr *__res10; struct nd_opt_hdr *__res11; struct nd_opt_hdr *__res12; struct nd_opt_hdr *__res13; struct nd_opt_nonce *nonce; struct nd_opt_hdr *__res15; 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_nonce nd_opt_each.nonce #define nd_opts_search nd_opt_each.search #define nd_opts_last nd_opt_each.last #define nd_opts_done nd_opt_each.done #include /* XXX: need nd6_var.h?? */ /* nd6.c */ void nd6_init(void); void nd6_nbr_init(void); struct nd_kifinfo *nd6_ifattach(struct ifnet *); void nd6_ifdetach(struct ifnet *, struct in6_ifextra *); int nd6_is_addr_neighbor(const struct sockaddr_in6 *, struct ifnet *); void nd6_option_init(void *, int, union nd_opts *); int nd6_options(union nd_opts *); struct llentry *nd6_lookup(const struct in6_addr *, const struct ifnet *, bool); struct llentry *nd6_create(const struct in6_addr *, const struct ifnet *); void nd6_purge(struct ifnet *, struct in6_ifextra *); void nd6_nud_hint(struct rtentry *); int nd6_resolve(struct ifnet *, const struct rtentry *, struct mbuf *, const struct sockaddr *, uint8_t *, size_t); void nd6_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); int nd6_ioctl(u_long, void *, struct ifnet *); void nd6_cache_lladdr(struct ifnet *, struct in6_addr *, char *, int, int, int); int nd6_sysctl(int, void *, size_t *, void *, size_t); int nd6_need_cache(struct ifnet *); void nd6_llinfo_release_pkts(struct llentry *, struct ifnet *); /* nd6_nbr.c */ void nd6_na_input(struct mbuf *, int, int); void nd6_na_output(struct ifnet *, const struct in6_addr *, const struct in6_addr *, u_long, int, const struct sockaddr *); void nd6_ns_input(struct mbuf *, int, int); void nd6_ns_output(struct ifnet *, const struct in6_addr *, const struct in6_addr *, const struct in6_addr *, const uint8_t *); const void *nd6_ifptomac(const struct ifnet *); void nd6_dad_start(struct ifaddr *, int); void nd6_dad_stop(struct ifaddr *); /* nd6_rtr.c */ void nd6_rtr_cache(struct mbuf *, int, int, int); #endif /* _KERNEL */ #endif /* !_NETINET6_ND6_H_ */