Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/nd6.h
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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: releng/12.0/sys/netinet6/nd6.h 327173 2017-12-25 04:48:39Z kan $ 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 94 #ifdef _KERNEL 95 #define ND_IFINFO(ifp) \ 96 (((struct in6_ifextra *)(ifp)->if_afdata[AF_INET6])->nd_ifinfo) 97 #define IN6_LINKMTU(ifp) \ 98 ((ND_IFINFO(ifp)->linkmtu && ND_IFINFO(ifp)->linkmtu < (ifp)->if_mtu) \ 99 ? ND_IFINFO(ifp)->linkmtu \ 100 : ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < (ifp)->if_mtu) \ 101 ? ND_IFINFO(ifp)->maxmtu : (ifp)->if_mtu)) 102 #endif 103 104 struct in6_nbrinfo { 105 char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ 106 struct in6_addr addr; /* IPv6 address of the neighbor */ 107 long asked; /* number of queries already sent for this addr */ 108 int isrouter; /* if it acts as a router */ 109 int state; /* reachability state */ 110 int expire; /* lifetime for NDP state transition */ 111 }; 112 113 #define DRLSTSIZ 10 114 #define PRLSTSIZ 10 115 struct in6_drlist { 116 char ifname[IFNAMSIZ]; 117 struct { 118 struct in6_addr rtaddr; 119 u_char flags; 120 u_short rtlifetime; 121 u_long expire; 122 u_short if_index; 123 } defrouter[DRLSTSIZ]; 124 }; 125 126 struct in6_defrouter { 127 struct sockaddr_in6 rtaddr; 128 u_char flags; 129 u_short rtlifetime; 130 u_long expire; 131 u_short if_index; 132 }; 133 134 #ifdef _KERNEL 135 struct in6_oprlist { 136 char ifname[IFNAMSIZ]; 137 struct { 138 struct in6_addr prefix; 139 struct prf_ra raflags; 140 u_char prefixlen; 141 u_char origin; 142 u_long vltime; 143 u_long pltime; 144 u_long expire; 145 u_short if_index; 146 u_short advrtrs; /* number of advertisement routers */ 147 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 148 } prefix[PRLSTSIZ]; 149 }; 150 #endif 151 152 struct in6_prlist { 153 char ifname[IFNAMSIZ]; 154 struct { 155 struct in6_addr prefix; 156 struct prf_ra raflags; 157 u_char prefixlen; 158 u_char origin; 159 u_int32_t vltime; 160 u_int32_t pltime; 161 time_t expire; 162 u_short if_index; 163 u_short advrtrs; /* number of advertisement routers */ 164 struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ 165 } prefix[PRLSTSIZ]; 166 }; 167 168 struct in6_prefix { 169 struct sockaddr_in6 prefix; 170 struct prf_ra raflags; 171 u_char prefixlen; 172 u_char origin; 173 u_int32_t vltime; 174 u_int32_t pltime; 175 time_t expire; 176 u_int32_t flags; 177 int refcnt; 178 u_short if_index; 179 u_short advrtrs; /* number of advertisement routers */ 180 /* struct sockaddr_in6 advrtr[] */ 181 }; 182 183 #ifdef _KERNEL 184 struct in6_ondireq { 185 char ifname[IFNAMSIZ]; 186 struct { 187 u_int32_t linkmtu; /* LinkMTU */ 188 u_int32_t maxmtu; /* Upper bound of LinkMTU */ 189 u_int32_t basereachable; /* BaseReachableTime */ 190 u_int32_t reachable; /* Reachable Time */ 191 u_int32_t retrans; /* Retrans Timer */ 192 u_int32_t flags; /* Flags */ 193 int recalctm; /* BaseReacable re-calculation timer */ 194 u_int8_t chlim; /* CurHopLimit */ 195 u_int8_t receivedra; 196 } ndi; 197 }; 198 #endif 199 200 struct in6_ndireq { 201 char ifname[IFNAMSIZ]; 202 struct nd_ifinfo ndi; 203 }; 204 205 struct in6_ndifreq { 206 char ifname[IFNAMSIZ]; 207 u_long ifindex; 208 }; 209 210 /* Prefix status */ 211 #define NDPRF_ONLINK 0x1 212 #define NDPRF_DETACHED 0x2 213 214 /* protocol constants */ 215 #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ 216 #define RTR_SOLICITATION_INTERVAL 4 /* 4sec */ 217 #define MAX_RTR_SOLICITATIONS 3 218 219 #define ND6_INFINITE_LIFETIME 0xffffffff 220 221 #ifdef _KERNEL 222 /* node constants */ 223 #define MAX_REACHABLE_TIME 3600000 /* msec */ 224 #define REACHABLE_TIME 30000 /* msec */ 225 #define RETRANS_TIMER 1000 /* msec */ 226 #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */ 227 #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */ 228 #define DEF_TEMP_VALID_LIFETIME 604800 /* 1 week */ 229 #define DEF_TEMP_PREFERRED_LIFETIME 86400 /* 1 day */ 230 #define TEMPADDR_REGEN_ADVANCE 5 /* sec */ 231 #define MAX_TEMP_DESYNC_FACTOR 600 /* 10 min */ 232 #define ND_COMPUTE_RTIME(x) \ 233 (((MIN_RANDOM_FACTOR * (x >> 10)) + (arc4random() & \ 234 ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) 235 236 TAILQ_HEAD(nd_drhead, nd_defrouter); 237 struct nd_defrouter { 238 TAILQ_ENTRY(nd_defrouter) dr_entry; 239 struct in6_addr rtaddr; 240 u_char raflags; /* flags on RA message */ 241 u_short rtlifetime; 242 u_long expire; 243 struct ifnet *ifp; 244 int installed; /* is installed into kernel routing table */ 245 u_int refcnt; 246 }; 247 248 struct nd_prefixctl { 249 struct ifnet *ndpr_ifp; 250 251 /* prefix */ 252 struct sockaddr_in6 ndpr_prefix; 253 u_char ndpr_plen; 254 255 u_int32_t ndpr_vltime; /* advertised valid lifetime */ 256 u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 257 258 struct prf_ra ndpr_flags; 259 }; 260 261 LIST_HEAD(nd_prhead, nd_prefix); 262 struct nd_prefix { 263 struct ifnet *ndpr_ifp; 264 LIST_ENTRY(nd_prefix) ndpr_entry; 265 struct sockaddr_in6 ndpr_prefix; /* prefix */ 266 struct in6_addr ndpr_mask; /* netmask derived from the prefix */ 267 268 u_int32_t ndpr_vltime; /* advertised valid lifetime */ 269 u_int32_t ndpr_pltime; /* advertised preferred lifetime */ 270 271 time_t ndpr_expire; /* expiration time of the prefix */ 272 time_t ndpr_preferred; /* preferred time of the prefix */ 273 time_t ndpr_lastupdate; /* reception time of last advertisement */ 274 275 struct prf_ra ndpr_flags; 276 u_int32_t ndpr_stateflags; /* actual state flags */ 277 /* list of routers that advertise the prefix: */ 278 LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs; 279 u_char ndpr_plen; 280 int ndpr_addrcnt; /* count of derived addresses */ 281 volatile u_int ndpr_refcnt; 282 }; 283 284 #define ndpr_raf ndpr_flags 285 #define ndpr_raf_onlink ndpr_flags.onlink 286 #define ndpr_raf_auto ndpr_flags.autonomous 287 #define ndpr_raf_router ndpr_flags.router 288 289 /* 290 * Message format for use in obtaining information about prefixes 291 * from inet6 sysctl function 292 */ 293 struct inet6_ndpr_msghdr { 294 u_short inpm_msglen; /* to skip over non-understood messages */ 295 u_char inpm_version; /* future binary compatibility */ 296 u_char inpm_type; /* message type */ 297 struct in6_addr inpm_prefix; 298 u_long prm_vltim; 299 u_long prm_pltime; 300 u_long prm_expire; 301 u_long prm_preferred; 302 struct in6_prflags prm_flags; 303 u_short prm_index; /* index for associated ifp */ 304 u_char prm_plen; /* length of prefix in bits */ 305 }; 306 307 #define prm_raf_onlink prm_flags.prf_ra.onlink 308 #define prm_raf_auto prm_flags.prf_ra.autonomous 309 310 #define prm_statef_onlink prm_flags.prf_state.onlink 311 312 #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid 313 #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd 314 315 struct nd_pfxrouter { 316 LIST_ENTRY(nd_pfxrouter) pfr_entry; 317 struct nd_defrouter *router; 318 }; 319 320 #ifdef MALLOC_DECLARE 321 MALLOC_DECLARE(M_IP6NDP); 322 #endif 323 324 /* nd6.c */ 325 VNET_DECLARE(int, nd6_prune); 326 VNET_DECLARE(int, nd6_delay); 327 VNET_DECLARE(int, nd6_umaxtries); 328 VNET_DECLARE(int, nd6_mmaxtries); 329 VNET_DECLARE(int, nd6_useloopback); 330 VNET_DECLARE(int, nd6_maxnudhint); 331 VNET_DECLARE(int, nd6_gctimer); 332 VNET_DECLARE(struct nd_drhead, nd_defrouter); 333 VNET_DECLARE(struct nd_prhead, nd_prefix); 334 VNET_DECLARE(int, nd6_debug); 335 VNET_DECLARE(int, nd6_onlink_ns_rfc4861); 336 #define V_nd6_prune VNET(nd6_prune) 337 #define V_nd6_delay VNET(nd6_delay) 338 #define V_nd6_umaxtries VNET(nd6_umaxtries) 339 #define V_nd6_mmaxtries VNET(nd6_mmaxtries) 340 #define V_nd6_useloopback VNET(nd6_useloopback) 341 #define V_nd6_maxnudhint VNET(nd6_maxnudhint) 342 #define V_nd6_gctimer VNET(nd6_gctimer) 343 #define V_nd_defrouter VNET(nd_defrouter) 344 #define V_nd_prefix VNET(nd_prefix) 345 #define V_nd6_debug VNET(nd6_debug) 346 #define V_nd6_onlink_ns_rfc4861 VNET(nd6_onlink_ns_rfc4861) 347 348 /* Lock for the prefix and default router lists. */ 349 VNET_DECLARE(struct rwlock, nd6_lock); 350 VNET_DECLARE(uint64_t, nd6_list_genid); 351 #define V_nd6_lock VNET(nd6_lock) 352 #define V_nd6_list_genid VNET(nd6_list_genid) 353 354 #define ND6_RLOCK() rw_rlock(&V_nd6_lock) 355 #define ND6_RUNLOCK() rw_runlock(&V_nd6_lock) 356 #define ND6_WLOCK() rw_wlock(&V_nd6_lock) 357 #define ND6_WUNLOCK() rw_wunlock(&V_nd6_lock) 358 #define ND6_TRY_UPGRADE() rw_try_upgrade(&V_nd6_lock) 359 #define ND6_WLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_WLOCKED) 360 #define ND6_RLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_RLOCKED) 361 #define ND6_LOCK_ASSERT() rw_assert(&V_nd6_lock, RA_LOCKED) 362 #define ND6_UNLOCK_ASSERT() rw_assert(&V_nd6_lock, RA_UNLOCKED) 363 364 /* Mutex for prefix onlink/offlink transitions. */ 365 VNET_DECLARE(struct mtx, nd6_onlink_mtx); 366 #define V_nd6_onlink_mtx VNET(nd6_onlink_mtx) 367 368 #define ND6_ONLINK_LOCK() mtx_lock(&V_nd6_onlink_mtx) 369 #define ND6_ONLINK_TRYLOCK() mtx_trylock(&V_nd6_onlink_mtx) 370 #define ND6_ONLINK_UNLOCK() mtx_unlock(&V_nd6_onlink_mtx) 371 #define ND6_ONLINK_LOCK_ASSERT() mtx_assert(&V_nd6_onlink_mtx, MA_OWNED) 372 #define ND6_ONLINK_UNLOCK_ASSERT() mtx_assert(&V_nd6_onlink_mtx, MA_NOTOWNED) 373 374 #define nd6log(x) do { if (V_nd6_debug) log x; } while (/*CONSTCOND*/ 0) 375 376 /* nd6_rtr.c */ 377 VNET_DECLARE(int, nd6_defifindex); 378 VNET_DECLARE(int, ip6_desync_factor); /* seconds */ 379 VNET_DECLARE(u_int32_t, ip6_temp_preferred_lifetime); /* seconds */ 380 VNET_DECLARE(u_int32_t, ip6_temp_valid_lifetime); /* seconds */ 381 VNET_DECLARE(int, ip6_temp_regen_advance); /* seconds */ 382 #define V_nd6_defifindex VNET(nd6_defifindex) 383 #define V_ip6_desync_factor VNET(ip6_desync_factor) 384 #define V_ip6_temp_preferred_lifetime VNET(ip6_temp_preferred_lifetime) 385 #define V_ip6_temp_valid_lifetime VNET(ip6_temp_valid_lifetime) 386 #define V_ip6_temp_regen_advance VNET(ip6_temp_regen_advance) 387 388 union nd_opts { 389 struct nd_opt_hdr *nd_opt_array[16]; /* max = ND_OPT_NONCE */ 390 struct { 391 struct nd_opt_hdr *zero; 392 struct nd_opt_hdr *src_lladdr; 393 struct nd_opt_hdr *tgt_lladdr; 394 struct nd_opt_prefix_info *pi_beg; /* multiple opts, start */ 395 struct nd_opt_rd_hdr *rh; 396 struct nd_opt_mtu *mtu; 397 struct nd_opt_hdr *__res6; 398 struct nd_opt_hdr *__res7; 399 struct nd_opt_hdr *__res8; 400 struct nd_opt_hdr *__res9; 401 struct nd_opt_hdr *__res10; 402 struct nd_opt_hdr *__res11; 403 struct nd_opt_hdr *__res12; 404 struct nd_opt_hdr *__res13; 405 struct nd_opt_nonce *nonce; 406 struct nd_opt_hdr *__res15; 407 struct nd_opt_hdr *search; /* multiple opts */ 408 struct nd_opt_hdr *last; /* multiple opts */ 409 int done; 410 struct nd_opt_prefix_info *pi_end;/* multiple opts, end */ 411 } nd_opt_each; 412 }; 413 #define nd_opts_src_lladdr nd_opt_each.src_lladdr 414 #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr 415 #define nd_opts_pi nd_opt_each.pi_beg 416 #define nd_opts_pi_end nd_opt_each.pi_end 417 #define nd_opts_rh nd_opt_each.rh 418 #define nd_opts_mtu nd_opt_each.mtu 419 #define nd_opts_nonce nd_opt_each.nonce 420 #define nd_opts_search nd_opt_each.search 421 #define nd_opts_last nd_opt_each.last 422 #define nd_opts_done nd_opt_each.done 423 424 /* XXX: need nd6_var.h?? */ 425 /* nd6.c */ 426 void nd6_init(void); 427 #ifdef VIMAGE 428 void nd6_destroy(void); 429 #endif 430 struct nd_ifinfo *nd6_ifattach(struct ifnet *); 431 void nd6_ifdetach(struct ifnet *, struct nd_ifinfo *); 432 int nd6_is_addr_neighbor(const struct sockaddr_in6 *, struct ifnet *); 433 void nd6_option_init(void *, int, union nd_opts *); 434 struct nd_opt_hdr *nd6_option(union nd_opts *); 435 int nd6_options(union nd_opts *); 436 struct llentry *nd6_lookup(const struct in6_addr *, int, struct ifnet *); 437 struct llentry *nd6_alloc(const struct in6_addr *, int, struct ifnet *); 438 void nd6_setmtu(struct ifnet *); 439 void nd6_llinfo_setstate(struct llentry *lle, int newstate); 440 void nd6_timer(void *); 441 void nd6_purge(struct ifnet *); 442 int nd6_resolve_addr(struct ifnet *ifp, int flags, const struct sockaddr *dst, 443 char *desten, uint32_t *pflags); 444 int nd6_resolve(struct ifnet *, int, struct mbuf *, 445 const struct sockaddr *, u_char *, uint32_t *, struct llentry **); 446 int nd6_ioctl(u_long, caddr_t, struct ifnet *); 447 void nd6_cache_lladdr(struct ifnet *, struct in6_addr *, 448 char *, int, int, int); 449 void nd6_grab_holdchain(struct llentry *, struct mbuf **, 450 struct sockaddr_in6 *); 451 int nd6_flush_holdchain(struct ifnet *, struct mbuf *, 452 struct sockaddr_in6 *); 453 int nd6_add_ifa_lle(struct in6_ifaddr *); 454 void nd6_rem_ifa_lle(struct in6_ifaddr *, int); 455 int nd6_output_ifp(struct ifnet *, struct ifnet *, struct mbuf *, 456 struct sockaddr_in6 *, struct route *); 457 458 /* nd6_nbr.c */ 459 void nd6_na_input(struct mbuf *, int, int); 460 void nd6_na_output(struct ifnet *, const struct in6_addr *, 461 const struct in6_addr *, u_long, int, struct sockaddr *); 462 void nd6_ns_input(struct mbuf *, int, int); 463 void nd6_ns_output(struct ifnet *, const struct in6_addr *, 464 const struct in6_addr *, const struct in6_addr *, uint8_t *); 465 caddr_t nd6_ifptomac(struct ifnet *); 466 void nd6_dad_init(void); 467 void nd6_dad_start(struct ifaddr *, int); 468 void nd6_dad_stop(struct ifaddr *); 469 470 /* nd6_rtr.c */ 471 void nd6_rs_input(struct mbuf *, int, int); 472 void nd6_ra_input(struct mbuf *, int, int); 473 void defrouter_reset(void); 474 void defrouter_select_fib(int fibnum); 475 void defrouter_select(void); 476 void defrouter_ref(struct nd_defrouter *); 477 void defrouter_rele(struct nd_defrouter *); 478 bool defrouter_remove(struct in6_addr *, struct ifnet *); 479 void defrouter_unlink(struct nd_defrouter *, struct nd_drhead *); 480 void defrouter_del(struct nd_defrouter *); 481 int nd6_prelist_add(struct nd_prefixctl *, struct nd_defrouter *, 482 struct nd_prefix **); 483 void nd6_prefix_unlink(struct nd_prefix *, struct nd_prhead *); 484 void nd6_prefix_del(struct nd_prefix *); 485 void nd6_prefix_ref(struct nd_prefix *); 486 void nd6_prefix_rele(struct nd_prefix *); 487 int nd6_prefix_onlink(struct nd_prefix *); 488 int nd6_prefix_offlink(struct nd_prefix *); 489 void pfxlist_onlink_check(void); 490 struct nd_defrouter *defrouter_lookup(struct in6_addr *, struct ifnet *); 491 struct nd_defrouter *defrouter_lookup_locked(struct in6_addr *, struct ifnet *); 492 struct nd_prefix *nd6_prefix_lookup(struct nd_prefixctl *); 493 void rt6_flush(struct in6_addr *, struct ifnet *); 494 int nd6_setdefaultiface(int); 495 int in6_tmpifadd(const struct in6_ifaddr *, int, int); 496 497 #endif /* _KERNEL */ 498 499 #endif /* _NETINET6_ND6_H_ */
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