1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $KAME: nd6.h,v 1.76 2001/12/18 02:10:31 itojun Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NETINET6_ND6_H_ 36 #define _NETINET6_ND6_H_ 37 38 /* see net/route.h, or net/if_inarp.h */ 39 #ifndef RTF_ANNOUNCE 40 #define RTF_ANNOUNCE RTF_PROTO2 41 #endif 42 43 #include <sys/queue.h> 44 #include <sys/callout.h> 45 46 struct llentry; 47 48 #define ND6_LLINFO_NOSTATE -2 49 /* 50 * We don't need the WAITDELETE state any more, but we keep the definition 51 * in a comment line instead of removing it. This is necessary to avoid 52 * unintentionally reusing the value for another purpose, which might 53 * affect backward compatibility with old applications. 54 * (20000711 jinmei@kame.net) 55 */ 56 /* #define ND6_LLINFO_WAITDELETE -1 */ 57 #define ND6_LLINFO_INCOMPLETE 0 58 #define ND6_LLINFO_REACHABLE 1 59 #define ND6_LLINFO_STALE 2 60 #define ND6_LLINFO_DELAY 3 61 #define ND6_LLINFO_PROBE 4 62 63 #define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE) 64 #define ND6_LLINFO_PERMANENT(n) (((n)->la_expire == 0) && ((n)->ln_state > ND6_LLINFO_INCOMPLETE)) 65 66 struct nd_ifinfo { 67 u_int32_t linkmtu; /* LinkMTU */ 68 u_int32_t maxmtu; /* Upper bound of LinkMTU */ 69 u_int32_t basereachable; /* BaseReachableTime */ 70 u_int32_t reachable; /* Reachable Time */ 71 u_int32_t retrans; /* Retrans Timer */ 72 u_int32_t flags; /* Flags */ 73 int recalctm; /* BaseReacable re-calculation timer */ 74 u_int8_t chlim; /* CurHopLimit */ 75 u_int8_t initialized; /* Flag to see the entry is initialized */ 76 /* the following 3 members are for privacy extension for addrconf */ 77 u_int8_t randomseed0[8]; /* upper 64 bits of MD5 digest */ 78 u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */ 79 u_int8_t randomid[8]; /* current random ID */ 80 }; 81 82 #define ND6_IFF_PERFORMNUD 0x1 83 #define ND6_IFF_ACCEPT_RTADV 0x2 84 #define ND6_IFF_PREFER_SOURCE 0x4 /* Not used in FreeBSD. */ 85 #define ND6_IFF_IFDISABLED 0x8 /* IPv6 operation is disabled due to 86 * DAD failure. (XXX: not ND-specific) 87 */ 88 #define ND6_IFF_DONT_SET_IFROUTE 0x10 89 #define ND6_IFF_AUTO_LINKLOCAL 0x20 90 #define ND6_IFF_NO_RADR 0x40 91 #define ND6_IFF_NO_PREFER_IFACE 0x80 /* XXX: not related to ND. */ 92 #define ND6_IFF_NO_DAD 0x100 93 #ifdef EXPERIMENTAL 94 /* XXX: not related to ND. */ 95 #define ND6_IFF_IPV6_ONLY 0x200 /* draft-ietf-6man-ipv6only-flag */ 96 #define ND6_IFF_IPV6_ONLY_MANUAL 0x400 97 #define ND6_IFF_IPV6_ONLY_MASK (ND6_IFF_IPV6_ONLY|ND6_IFF_IPV6_ONLY_MANUAL) 98 #endif 99 100 #ifdef _KERNEL 101 #define ND_IFINFO(ifp) \ 102 (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->nd_ifinfo) 103 #define IN6_LINKMTU(ifp) \ 104 ((ND_IFINFO(ifp)->linkmtu && ND_IFINFO(ifp)->linkmtu < (ifp)->if_mtu) \ 105 ? ND_IFINFO(ifp)->linkmtu \ 106 : ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < (ifp)->if_mtu) \ 107 ? ND_IFINFO(ifp)->maxmtu : (ifp)->if_mtu)) 108 #endif 109 110 struct in6_nbrinfo { 111 char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ 112 struct in6_addr addr; /* IPv6 address of the neighbor */ 113 long asked; /* number of queries already sent for this addr */ 114 int isrouter; /* if it acts as a router */ 115 int state; /* reachability state */ 116 int expire; /* lifetime for NDP state transition */ 117 }; 118 119 #define DRLSTSIZ 10 120 #define PRLSTSIZ 10 121 struct in6_drlist { 122 char ifname[IFNAMSIZ]; 123 struct { 124 struct in6_addr rtaddr; 125 u_char flags; 126 u_short rtlifetime; 127 u_long expire; 128 u_short if_index; 129 } defrouter[DRLSTSIZ]; 130 }; 131 132 struct in6_defrouter { 133 struct sockaddr_in6 rtaddr; 134 u_char flags; 135 u_short rtlifetime; 136 u_long expire; 137 u_short if_index; 138 }; 139 140 #ifdef _KERNEL 141 struct in6_oprlist { 142 char ifname[IFNAMSIZ]; 143 struct { 144 struct in6_addr prefix; 145 struct prf_ra raflags; 146 u_char prefixlen; 147 u_char origin; 148 u_long vltime; 149 u_long pltime; 150 u_long expire; 151 u_short if_index; 152 u_short advrtrs; /* number of advertisement routers */ 153 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 154 } prefix[PRLSTSIZ]; 155 }; 156 #endif 157 158 struct in6_prlist { 159 char ifname[IFNAMSIZ]; 160 struct { 161 struct in6_addr prefix; 162 struct prf_ra raflags; 163 u_char prefixlen; 164 u_char origin; 165 u_int32_t vltime; 166 u_int32_t pltime; 167 time_t expire; 168 u_short if_index; 169 u_short advrtrs; /* number of advertisement routers */ 170 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 171 } prefix[PRLSTSIZ]; 172 }; 173 174 struct in6_prefix { 175 struct sockaddr_in6 prefix; 176 struct prf_ra raflags; 177 u_char prefixlen; 178 u_char origin; 179 u_int32_t vltime; 180 u_int32_t pltime; 181 time_t expire; 182 u_int32_t flags; 183 int refcnt; 184 u_short if_index; 185 u_short advrtrs; /* number of advertisement routers */ 186 /* struct sockaddr_in6 advrtr[] */ 187 }; 188 189 #ifdef _KERNEL 190 struct in6_ondireq { 191 char ifname[IFNAMSIZ]; 192 struct { 193 u_int32_t linkmtu; /* LinkMTU */ 194 u_int32_t maxmtu; /* Upper bound of LinkMTU */ 195 u_int32_t basereachable; /* BaseReachableTime */ 196 u_int32_t reachable; /* Reachable Time */ 197 u_int32_t retrans; /* Retrans Timer */ 198 u_int32_t flags; /* Flags */ 199 int recalctm; /* BaseReacable re-calculation timer */ 200 u_int8_t chlim; /* CurHopLimit */ 201 u_int8_t receivedra; 202 } ndi; 203 }; 204 #endif 205 206 struct in6_ndireq { 207 char ifname[IFNAMSIZ]; 208 struct nd_ifinfo ndi; 209 }; 210 211 struct in6_ndifreq { 212 char ifname[IFNAMSIZ]; 213 u_long ifindex; 214 }; 215 216 /* Prefix status */ 217 #define NDPRF_ONLINK 0x1 218 #define NDPRF_DETACHED 0x2 219 220 /* protocol constants */ 221 #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ 222 #define RTR_SOLICITATION_INTERVAL 4 /* 4sec */ 223 #define MAX_RTR_SOLICITATIONS 3 224 225 #define ND6_INFINITE_LIFETIME 0xffffffff 226 227 #ifdef _KERNEL 228 /* node constants */ 229 #define MAX_REACHABLE_TIME 3600000 /* msec */ 230 #define REACHABLE_TIME 30000 /* msec */ 231 #define RETRANS_TIMER 1000 /* msec */ 232 #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */ 233 #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */ 234 #define DEF_TEMP_VALID_LIFETIME 604800 /* 1 week */ 235 #define DEF_TEMP_PREFERRED_LIFETIME 86400 /* 1 day */ 236 #define TEMPADDR_REGEN_ADVANCE 5 /* sec */ 237 #define MAX_TEMP_DESYNC_FACTOR 600 /* 10 min */ 238 #define ND_COMPUTE_RTIME(x) \ 239 (((MIN_RANDOM_FACTOR * (x >> 10)) + (arc4random() & \ 240 ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) 241 242 TAILQ_HEAD(nd_drhead, nd_defrouter); 243 struct nd_defrouter { 244 TAILQ_ENTRY(nd_defrouter) dr_entry; 245 struct in6_addr rtaddr; 246 u_char raflags; /* flags on RA message */ 247 u_short rtlifetime; 248 u_long expire; 249 struct ifnet *ifp; 250 int installed; /* is installed into kernel routing table */ 251 u_int refcnt; 252 }; 253 254 struct nd_prefixctl { 255 struct ifnet *ndpr_ifp; 256 257 /* prefix */ 258 struct sockaddr_in6 ndpr_prefix; 259 u_char ndpr_plen; 260 261 u_int32_t ndpr_vltime; /* advertised valid lifetime */ 262 u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 263 264 struct prf_ra ndpr_flags; 265 }; 266 267 LIST_HEAD(nd_prhead, nd_prefix); 268 struct nd_prefix { 269 struct ifnet *ndpr_ifp; 270 LIST_ENTRY(nd_prefix) ndpr_entry; 271 struct sockaddr_in6 ndpr_prefix; /* prefix */ 272 struct in6_addr ndpr_mask; /* netmask derived from the prefix */ 273 274 u_int32_t ndpr_vltime; /* advertised valid lifetime */ 275 u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 276 277 time_t ndpr_expire; /* expiration time of the prefix */ 278 time_t ndpr_preferred; /* preferred time of the prefix */ 279 time_t ndpr_lastupdate; /* reception time of last advertisement */ 280 281 struct prf_ra ndpr_flags; 282 u_int32_t ndpr_stateflags; /* actual state flags */ 283 /* list of routers that advertise the prefix: */ 284 LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs; 285 u_char ndpr_plen; 286 int ndpr_addrcnt; /* count of derived addresses */ 287 volatile u_int ndpr_refcnt; 288 }; 289 290 #define ndpr_raf ndpr_flags 291 #define ndpr_raf_onlink ndpr_flags.onlink 292 #define ndpr_raf_auto ndpr_flags.autonomous 293 #define ndpr_raf_router ndpr_flags.router 294 295 /* 296 * Message format for use in obtaining information about prefixes 297 * from inet6 sysctl function 298 */ 299 struct inet6_ndpr_msghdr { 300 u_short inpm_msglen; /* to skip over non-understood messages */ 301 u_char inpm_version; /* future binary compatibility */ 302 u_char inpm_type; /* message type */ 303 struct in6_addr inpm_prefix; 304 u_long prm_vltim; 305 u_long prm_pltime; 306 u_long prm_expire; 307 u_long prm_preferred; 308 struct in6_prflags prm_flags; 309 u_short prm_index; /* index for associated ifp */ 310 u_char prm_plen; /* length of prefix in bits */ 311 }; 312 313 #define prm_raf_onlink prm_flags.prf_ra.onlink 314 #define prm_raf_auto prm_flags.prf_ra.autonomous 315 316 #define prm_statef_onlink prm_flags.prf_state.onlink 317 318 #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid 319 #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd 320 321 struct nd_pfxrouter { 322 LIST_ENTRY(nd_pfxrouter) pfr_entry; 323 struct nd_defrouter *router; 324 }; 325 326 #ifdef MALLOC_DECLARE 327 MALLOC_DECLARE(M_IP6NDP); 328 #endif 329 330 /* nd6.c */ 331 VNET_DECLARE(int, nd6_prune); 332 VNET_DECLARE(int, nd6_delay); 333 VNET_DECLARE(int, nd6_umaxtries); 334 VNET_DECLARE(int, nd6_mmaxtries); 335 VNET_DECLARE(int, nd6_useloopback); 336 VNET_DECLARE(int, nd6_maxnudhint); 337 VNET_DECLARE(int, nd6_gctimer); 338 VNET_DECLARE(struct nd_drhead, nd_defrouter); 339 VNET_DECLARE(struct nd_prhead, nd_prefix); 340 VNET_DECLARE(int, nd6_debug); 341 VNET_DECLARE(int, nd6_onlink_ns_rfc4861); 342 #define V_nd6_prune VNET(nd6_prune) 343 #define V_nd6_delay VNET(nd6_delay) 344 #define V_nd6_umaxtries VNET(nd6_umaxtries) 345 #define V_nd6_mmaxtries VNET(nd6_mmaxtries) 346 #define V_nd6_useloopback VNET(nd6_useloopback) 347 #define V_nd6_maxnudhint VNET(nd6_maxnudhint) 348 #define V_nd6_gctimer VNET(nd6_gctimer) 349 #define V_nd_defrouter VNET(nd_defrouter) 350 #define V_nd_prefix VNET(nd_prefix) 351 #define V_nd6_debug VNET(nd6_debug) 352 #define V_nd6_onlink_ns_rfc4861 VNET(nd6_onlink_ns_rfc4861) 353 354 /* Lock for the prefix and default router lists. */ 355 VNET_DECLARE(struct rwlock, nd6_lock); 356 VNET_DECLARE(uint64_t, nd6_list_genid); 357 #define V_nd6_lock VNET(nd6_lock) 358 #define V_nd6_list_genid VNET(nd6_list_genid) 359 360 #define ND6_RLOCK() rw_rlock(&V_nd6_lock) 361 #define ND6_RUNLOCK() rw_runlock(&V_nd6_lock) 362 #define ND6_WLOCK() rw_wlock(&V_nd6_lock) 363 #define ND6_WUNLOCK() rw_wunlock(&V_nd6_lock) 364 #define ND6_TRY_UPGRADE() rw_try_upgrade(&V_nd6_lock) 365 #define ND6_WLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_WLOCKED) 366 #define ND6_RLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_RLOCKED) 367 #define ND6_LOCK_ASSERT() rw_assert(&V_nd6_lock, RA_LOCKED) 368 #define ND6_UNLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_UNLOCKED) 369 370 /* Mutex for prefix onlink/offlink transitions. */ 371 VNET_DECLARE(struct mtx, nd6_onlink_mtx); 372 #define V_nd6_onlink_mtx VNET(nd6_onlink_mtx) 373 374 #define ND6_ONLINK_LOCK() mtx_lock(&V_nd6_onlink_mtx) 375 #define ND6_ONLINK_TRYLOCK() mtx_trylock(&V_nd6_onlink_mtx) 376 #define ND6_ONLINK_UNLOCK() mtx_unlock(&V_nd6_onlink_mtx) 377 #define ND6_ONLINK_LOCK_ASSERT() mtx_assert(&V_nd6_onlink_mtx, MA_OWNED) 378 #define ND6_ONLINK_UNLOCK_ASSERT() mtx_assert(&V_nd6_onlink_mtx, MA_NOTOWNED) 379 380 #define nd6log(x) do { if (V_nd6_debug) log x; } while (/*CONSTCOND*/ 0) 381 382 /* nd6_rtr.c */ 383 VNET_DECLARE(int, nd6_defifindex); 384 VNET_DECLARE(int, ip6_desync_factor); /* seconds */ 385 VNET_DECLARE(u_int32_t, ip6_temp_preferred_lifetime); /* seconds */ 386 VNET_DECLARE(u_int32_t, ip6_temp_valid_lifetime); /* seconds */ 387 VNET_DECLARE(int, ip6_temp_regen_advance); /* seconds */ 388 #define V_nd6_defifindex VNET(nd6_defifindex) 389 #define V_ip6_desync_factor VNET(ip6_desync_factor) 390 #define V_ip6_temp_preferred_lifetime VNET(ip6_temp_preferred_lifetime) 391 #define V_ip6_temp_valid_lifetime VNET(ip6_temp_valid_lifetime) 392 #define V_ip6_temp_regen_advance VNET(ip6_temp_regen_advance) 393 394 union nd_opts { 395 struct nd_opt_hdr *nd_opt_array[16]; /* max = ND_OPT_NONCE */ 396 struct { 397 struct nd_opt_hdr *zero; 398 struct nd_opt_hdr *src_lladdr; 399 struct nd_opt_hdr *tgt_lladdr; 400 struct nd_opt_prefix_info *pi_beg; /* multiple opts, start */ 401 struct nd_opt_rd_hdr *rh; 402 struct nd_opt_mtu *mtu; 403 struct nd_opt_hdr *__res6; 404 struct nd_opt_hdr *__res7; 405 struct nd_opt_hdr *__res8; 406 struct nd_opt_hdr *__res9; 407 struct nd_opt_hdr *__res10; 408 struct nd_opt_hdr *__res11; 409 struct nd_opt_hdr *__res12; 410 struct nd_opt_hdr *__res13; 411 struct nd_opt_nonce *nonce; 412 struct nd_opt_hdr *__res15; 413 struct nd_opt_hdr *search; /* multiple opts */ 414 struct nd_opt_hdr *last; /* multiple opts */ 415 int done; 416 struct nd_opt_prefix_info *pi_end;/* multiple opts, end */ 417 } nd_opt_each; 418 }; 419 #define nd_opts_src_lladdr nd_opt_each.src_lladdr 420 #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr 421 #define nd_opts_pi nd_opt_each.pi_beg 422 #define nd_opts_pi_end nd_opt_each.pi_end 423 #define nd_opts_rh nd_opt_each.rh 424 #define nd_opts_mtu nd_opt_each.mtu 425 #define nd_opts_nonce nd_opt_each.nonce 426 #define nd_opts_search nd_opt_each.search 427 #define nd_opts_last nd_opt_each.last 428 #define nd_opts_done nd_opt_each.done 429 430 /* XXX: need nd6_var.h?? */ 431 /* nd6.c */ 432 void nd6_init(void); 433 #ifdef VIMAGE 434 void nd6_destroy(void); 435 #endif 436 struct nd_ifinfo *nd6_ifattach(struct ifnet *); 437 void nd6_ifdetach(struct ifnet *, struct nd_ifinfo *); 438 int nd6_is_addr_neighbor(const struct sockaddr_in6 *, struct ifnet *); 439 void nd6_option_init(void *, int, union nd_opts *); 440 struct nd_opt_hdr *nd6_option(union nd_opts *); 441 int nd6_options(union nd_opts *); 442 struct llentry *nd6_lookup(const struct in6_addr *, int, struct ifnet *); 443 struct llentry *nd6_alloc(const struct in6_addr *, int, struct ifnet *); 444 void nd6_setmtu(struct ifnet *); 445 void nd6_llinfo_setstate(struct llentry *lle, int newstate); 446 void nd6_timer(void *); 447 void nd6_purge(struct ifnet *); 448 int nd6_resolve_addr(struct ifnet *ifp, int flags, const struct sockaddr *dst, 449 char *desten, uint32_t *pflags); 450 int nd6_resolve(struct ifnet *, int, struct mbuf *, 451 const struct sockaddr *, u_char *, uint32_t *, struct llentry **); 452 int nd6_ioctl(u_long, caddr_t, struct ifnet *); 453 void nd6_cache_lladdr(struct ifnet *, struct in6_addr *, 454 char *, int, int, int); 455 void nd6_grab_holdchain(struct llentry *, struct mbuf **, 456 struct sockaddr_in6 *); 457 int nd6_flush_holdchain(struct ifnet *, struct mbuf *, 458 struct sockaddr_in6 *); 459 int nd6_add_ifa_lle(struct in6_ifaddr *); 460 void nd6_rem_ifa_lle(struct in6_ifaddr *, int); 461 int nd6_output_ifp(struct ifnet *, struct ifnet *, struct mbuf *, 462 struct sockaddr_in6 *, struct route *); 463 464 /* nd6_nbr.c */ 465 void nd6_na_input(struct mbuf *, int, int); 466 void nd6_na_output(struct ifnet *, const struct in6_addr *, 467 const struct in6_addr *, u_long, int, struct sockaddr *); 468 void nd6_ns_input(struct mbuf *, int, int); 469 void nd6_ns_output(struct ifnet *, const struct in6_addr *, 470 const struct in6_addr *, const struct in6_addr *, uint8_t *); 471 caddr_t nd6_ifptomac(struct ifnet *); 472 void nd6_dad_init(void); 473 void nd6_dad_start(struct ifaddr *, int); 474 void nd6_dad_stop(struct ifaddr *); 475 476 /* nd6_rtr.c */ 477 void nd6_rs_input(struct mbuf *, int, int); 478 void nd6_ra_input(struct mbuf *, int, int); 479 void nd6_ifnet_link_event(void *, struct ifnet *, int); 480 void defrouter_reset(void); 481 void defrouter_select_fib(int fibnum); 482 void defrouter_select(void); 483 void defrouter_ref(struct nd_defrouter *); 484 void defrouter_rele(struct nd_defrouter *); 485 bool defrouter_remove(struct in6_addr *, struct ifnet *); 486 void defrouter_unlink(struct nd_defrouter *, struct nd_drhead *); 487 void defrouter_del(struct nd_defrouter *); 488 int nd6_prelist_add(struct nd_prefixctl *, struct nd_defrouter *, 489 struct nd_prefix **); 490 void nd6_prefix_unlink(struct nd_prefix *, struct nd_prhead *); 491 void nd6_prefix_del(struct nd_prefix *); 492 void nd6_prefix_ref(struct nd_prefix *); 493 void nd6_prefix_rele(struct nd_prefix *); 494 int nd6_prefix_onlink(struct nd_prefix *); 495 int nd6_prefix_offlink(struct nd_prefix *); 496 void pfxlist_onlink_check(void); 497 struct nd_defrouter *defrouter_lookup(struct in6_addr *, struct ifnet *); 498 struct nd_defrouter *defrouter_lookup_locked(struct in6_addr *, struct ifnet *); 499 struct nd_prefix *nd6_prefix_lookup(struct nd_prefixctl *); 500 void rt6_flush(struct in6_addr *, struct ifnet *); 501 int nd6_setdefaultiface(int); 502 int in6_tmpifadd(const struct in6_ifaddr *, int, int); 503 504 #endif /* _KERNEL */ 505 506 #endif /* _NETINET6_ND6_H_ */ 507