| 0,0 → 1,408 |
|---|
| /*!\file netinet6/nd6.h |
| * IPv6 Neighbor Discovery. |
| */ |
| |
| /* $FreeBSD: src/sys/netinet6/nd6.h,v 1.10 2002/04/19 04:46:23 suz Exp $ */ |
| /* $KAME: nd6.h,v 1.76 2001/12/18 02:10:31 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_ |
| |
| /* see net/route.h, or net/if_inarp.h */ |
| #ifndef RTF_ANNOUNCE |
| #define RTF_ANNOUNCE RTF_PROTO2 |
| #endif |
| |
| #include <sys/queue.h> |
| #include <sys/callout.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_int32_t vltime; |
| u_int32_t pltime; |
| time_t 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[] */ |
| }; |
| |
| #ifdef _KERNEL |
| 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; |
| }; |
| #endif |
| |
| 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 |
| /* 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 rt_addrinfo *)); |
| 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 /* _KERNEL */ |
| |
| #endif /* _NETINET6_ND6_H_ */ |