1 /* $NetBSD: route.h,v 1.135 2025/09/21 15:11:52 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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 * @(#)route.h 8.5 (Berkeley) 2/8/95 32 */ 33 34 #ifndef _NET_ROUTE_H_ 35 #define _NET_ROUTE_H_ 36 37 #include <sys/queue.h> 38 #include <sys/socket.h> 39 #include <sys/types.h> 40 #include <net/if.h> 41 #ifdef _KERNEL 42 #include <sys/rwlock.h> 43 #include <sys/condvar.h> 44 #include <sys/pserialize.h> 45 #include <sys/percpu.h> 46 #endif 47 #include <sys/psref.h> 48 49 #if !(defined(_KERNEL) || defined(_STANDALONE)) 50 #include <stdbool.h> 51 #endif 52 53 /* 54 * Kernel resident routing tables. 55 * 56 * The routing tables are initialized when interface addresses 57 * are set by making entries for all directly connected interfaces. 58 */ 59 60 /* 61 * A route consists of a destination address and a reference 62 * to a routing entry. These are often held by protocols 63 * in their control blocks, e.g. inpcb. 64 */ 65 struct route { 66 struct rtentry *_ro_rt; 67 struct sockaddr *ro_sa; 68 uint64_t ro_rtcache_generation; 69 struct psref ro_psref; 70 int ro_bound; 71 }; 72 73 /* 74 * These numbers are used by reliable protocols for determining 75 * retransmission behavior and are included in the routing structure. 76 */ 77 struct rt_metrics { 78 uint64_t rmx_locks; /* Kernel must leave these values alone */ 79 uint64_t rmx_mtu; /* MTU for this path */ 80 uint64_t rmx_hopcount; /* max hops expected */ 81 uint64_t rmx_recvpipe; /* inbound delay-bandwidth product */ 82 uint64_t rmx_sendpipe; /* outbound delay-bandwidth product */ 83 uint64_t rmx_ssthresh; /* outbound gateway buffer limit */ 84 uint64_t rmx_rtt; /* estimated round trip time */ 85 uint64_t rmx_rttvar; /* estimated rtt variance */ 86 time_t rmx_expire; /* lifetime for route, e.g. redirect */ 87 time_t rmx_pksent; /* packets sent using this route */ 88 }; 89 90 /* 91 * rmx_rtt and rmx_rttvar are stored as microseconds; 92 * RTTTOPRHZ(rtt) converts to a value suitable for use 93 * by a protocol slowtimo counter. 94 */ 95 #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */ 96 #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ)) 97 98 /* 99 * We distinguish between routes to hosts and routes to networks, 100 * preferring the former if available. For each route we infer 101 * the interface to use from the gateway address supplied when 102 * the route was entered. Routes that forward packets through 103 * gateways are marked so that the output routines know to address the 104 * gateway rather than the ultimate destination. 105 */ 106 #ifndef RNF_NORMAL 107 #include <net/radix.h> 108 #endif 109 struct rtentry { 110 struct radix_node rt_nodes[2]; /* tree glue, and other values */ 111 #define rt_mask(r) ((const struct sockaddr *)((r)->rt_nodes->rn_mask)) 112 struct sockaddr *rt_gateway; /* value */ 113 int rt_flags; /* up/down?, host/net */ 114 int rt_refcnt; /* # held references */ 115 uint64_t rt_use; /* raw # packets forwarded */ 116 struct ifnet *rt_ifp; /* the answer: interface to use */ 117 struct ifaddr *rt_ifa; /* the answer: interface to use */ 118 uint32_t rt_ifa_seqno; 119 void * rt_llinfo; /* pointer to link level info cache */ 120 struct rt_metrics rt_rmx; /* metrics used by rx'ing protocols */ 121 struct rtentry *rt_gwroute; /* implied entry for gatewayed routes */ 122 LIST_HEAD(, rttimer) rt_timer; /* queue of timeouts for misc funcs */ 123 struct rtentry *rt_parent; /* parent of cloned route */ 124 struct sockaddr *_rt_key; 125 struct sockaddr *rt_tag; /* route tagging info */ 126 #ifdef _KERNEL 127 kcondvar_t rt_cv; 128 struct psref_target rt_psref; 129 SLIST_ENTRY(rtentry) rt_free; /* queue of deferred frees */ 130 #endif 131 }; 132 133 static __inline const struct sockaddr * 134 rt_getkey(const struct rtentry *rt) 135 { 136 return rt->_rt_key; 137 } 138 139 /* 140 * Following structure necessary for 4.3 compatibility; 141 * We should eventually move it to a compat file. 142 */ 143 struct ortentry { 144 uint32_t rt_hash; /* to speed lookups */ 145 struct sockaddr rt_dst; /* key */ 146 struct sockaddr rt_gateway; /* value */ 147 int16_t rt_flags; /* up/down?, host/net */ 148 int16_t rt_refcnt; /* # held references */ 149 uint32_t rt_use; /* raw # packets forwarded */ 150 struct ifnet *rt_ifp; /* the answer: interface to use */ 151 }; 152 153 #define RTF_UP 0x1 /* route usable */ 154 #define RTF_GATEWAY 0x2 /* destination is a gateway */ 155 #define RTF_HOST 0x4 /* host entry (net otherwise) */ 156 #define RTF_REJECT 0x8 /* host or net unreachable */ 157 #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ 158 #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ 159 #define RTF_DONE 0x40 /* message confirmed */ 160 #define RTF_MASK 0x80 /* subnet mask present */ 161 // #define RTF_CLONING 0x100 /* generate new routes on use */ 162 #define RTF_CONNECTED 0x100 /* hosts on this route are neighbours */ 163 // #define RTF_XRESOLVE 0x200 /* external daemon resolves name */ 164 // #define RTF_LLINFO 0x400 /* generated by ARP or NDP */ 165 #define RTF_LLDATA 0x400 /* used by apps to add/del L2 entries */ 166 #define RTF_STATIC 0x800 /* manually added */ 167 #define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ 168 // #define RTF_CLONED 0x2000 /* this is a cloned route */ 169 #define RTF_PROTO2 0x4000 /* protocol specific routing flag */ 170 #define RTF_PROTO1 0x8000 /* protocol specific routing flag */ 171 #define RTF_SRC 0x10000 /* route has fixed source address */ 172 #define RTF_ANNOUNCE 0x20000 /* announce new ARP or NDP entry */ 173 #define RTF_LOCAL 0x40000 /* route represents a local address */ 174 #define RTF_BROADCAST 0x80000 /* route represents a bcast address */ 175 #define RTF_UPDATING 0x100000 /* route is updating */ 176 /* 177 * The flag is nevert set to rt_flags. It just tells rtrequest1 to set a passed 178 * ifa to rt_ifa (via rti_ifa) and not replace rt_ifa in ifa_rtrequest. 179 */ 180 #define RTF_DONTCHANGEIFA 0x200000 /* suppress rt_ifa replacement */ 181 182 /* 183 * 0x400 is exposed to userland just for backward compatibility. For that 184 * purpose, it should be shown as LLINFO. 185 */ 186 #define RTFBITS "\020\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE" \ 187 "\010MASK_PRESENT\011CONNECTED\012XRESOLVE\013LLINFO\014STATIC" \ 188 "\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1\021SRC\022ANNOUNCE" \ 189 "\023LOCAL\024BROADCAST\025UPDATING" 190 191 192 /* 193 * Routing statistics. 194 */ 195 struct rtstat { 196 uint64_t rts_badredirect; /* bogus redirect calls */ 197 uint64_t rts_dynamic; /* routes created by redirects */ 198 uint64_t rts_newgateway; /* routes modified by redirects */ 199 uint64_t rts_unreach; /* lookups which failed */ 200 uint64_t rts_wildcard; /* lookups satisfied by a wildcard */ 201 }; 202 203 /* 204 * Structures for routing messages. By forcing the first member to be aligned 205 * at a 64-bit boundary, we also force the size to be a multiple of 64-bits. 206 */ 207 208 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) 209 /* 210 * If we aren't being compiled for backwards compatibility, enforce 64-bit 211 * alignment so any routing message is the same regardless if the kernel 212 * is an ILP32 or LP64 kernel. 213 */ 214 #define __align64 __aligned(sizeof(uint64_t)) 215 #else 216 #define __align64 217 #endif 218 219 struct rt_msghdr { 220 u_short rtm_msglen __align64; 221 /* to skip over non-understood messages */ 222 u_char rtm_version; /* future binary compatibility */ 223 u_char rtm_type; /* message type */ 224 u_short rtm_index; /* index for associated ifp */ 225 int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ 226 int rtm_addrs; /* bitmask identifying sockaddrs in msg */ 227 pid_t rtm_pid; /* identify sender */ 228 int rtm_seq; /* for sender to identify action */ 229 int rtm_errno; /* why failed */ 230 int rtm_use; /* from rtentry */ 231 int rtm_inits; /* which metrics we are initializing */ 232 struct rt_metrics rtm_rmx __align64; 233 /* metrics themselves */ 234 }; 235 236 #undef __align64 237 238 #define RTM_VERSION 4 /* Up the ante and ignore older versions */ 239 240 #define RTM_ADD 0x1 /* Add Route */ 241 #define RTM_DELETE 0x2 /* Delete Route */ 242 #define RTM_CHANGE 0x3 /* Change Metrics or flags */ 243 #define RTM_GET 0x4 /* Report Metrics */ 244 #define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */ 245 #define RTM_REDIRECT 0x6 /* Told to use different route */ 246 #define RTM_MISS 0x7 /* Lookup failed on this address */ 247 #define RTM_LOCK 0x8 /* fix specified metrics */ 248 #define RTM_OLDADD 0x9 /* caused by SIOCADDRT */ 249 #define RTM_OLDDEL 0xa /* caused by SIOCDELRT */ 250 // #define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */ 251 #define RTM_ONEWADDR 0xc /* Old (pre-8.0) RTM_NEWADDR message */ 252 #define RTM_ODELADDR 0xd /* Old (pre-8.0) RTM_DELADDR message */ 253 #define RTM_OOIFINFO 0xe /* Old (pre-1.5) RTM_IFINFO message */ 254 #define RTM_OIFINFO 0xf /* Old (pre-64bit time) RTM_IFINFO message */ 255 #define RTM_IFANNOUNCE 0x10 /* iface arrival/departure */ 256 #define RTM_IEEE80211 0x11 /* IEEE80211 wireless event */ 257 #define RTM_SETGATE 0x12 /* set prototype gateway for clones 258 * (see example in arp_rtrequest). 259 */ 260 #define RTM_LLINFO_UPD 0x13 /* indication to ARP/NDP/etc. that link-layer 261 * address has changed 262 */ 263 #define RTM_IFINFO 0x14 /* iface/link going up/down etc. */ 264 #define RTM_OCHGADDR 0x15 /* Old (pre-8.0) RTM_CHGADDR message */ 265 #define RTM_NEWADDR 0x16 /* address being added to iface */ 266 #define RTM_DELADDR 0x17 /* address being removed from iface */ 267 #define RTM_CHGADDR 0x18 /* address properties changed */ 268 269 #ifdef RTM_NAMES 270 static const char *rtm_names[] = { 271 "*none*", "add", "delete", "change", "get", 272 "losing", "redirect", "miss", "lock", "oldadd", 273 "olddel", "*resolve*", "onewaddr", "odeladdr", "ooifinfo", 274 "oifinfo", "ifannounce", "ieee80211", "setgate", "llinfo_upd", 275 "ifinfo", "ochgaddr", "newaddr", "deladdr", "chgaddr", 276 }; 277 #endif 278 279 /* 280 * setsockopt defines used for the filtering. 281 */ 282 #define RO_MSGFILTER 1 /* array of which rtm_type to send to client */ 283 #define RO_MISSFILTER 2 /* array of sockaddrs to match miss dst */ 284 285 #define RO_FILTSA_MAX 30 /* maximum number of sockaddrs per filter */ 286 287 #define RTV_MTU 0x1 /* init or lock _mtu */ 288 #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ 289 #define RTV_EXPIRE 0x4 /* init or lock _expire */ 290 #define RTV_RPIPE 0x8 /* init or lock _recvpipe */ 291 #define RTV_SPIPE 0x10 /* init or lock _sendpipe */ 292 #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ 293 #define RTV_RTT 0x40 /* init or lock _rtt */ 294 #define RTV_RTTVAR 0x80 /* init or lock _rttvar */ 295 296 #define RTVBITS "\020\1MTU\2HOPCOUNT\3EXPIRE\4RECVPIPE\5SENDPIPE" \ 297 "\6SSTHRESH\7RTT\010RTTVAR" 298 299 /* 300 * Bitmask values for rtm_addr. 301 */ 302 #define RTA_DST 0x1 /* destination sockaddr present */ 303 #define RTA_GATEWAY 0x2 /* gateway sockaddr present */ 304 #define RTA_NETMASK 0x4 /* netmask sockaddr present */ 305 #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ 306 #define RTA_IFP 0x10 /* interface name sockaddr present */ 307 #define RTA_IFA 0x20 /* interface addr sockaddr present */ 308 #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ 309 #define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ 310 #define RTA_TAG 0x100 /* route tag */ 311 312 #define RTABITS "\020\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR" \ 313 "\010BRD\011TAG" 314 315 /* 316 * Index offsets for sockaddr array for alternate internal encoding. 317 */ 318 #define RTAX_DST 0 /* destination sockaddr present */ 319 #define RTAX_GATEWAY 1 /* gateway sockaddr present */ 320 #define RTAX_NETMASK 2 /* netmask sockaddr present */ 321 #define RTAX_GENMASK 3 /* cloning mask sockaddr present */ 322 #define RTAX_IFP 4 /* interface name sockaddr present */ 323 #define RTAX_IFA 5 /* interface addr sockaddr present */ 324 #define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ 325 #define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ 326 #define RTAX_TAG 8 /* route tag */ 327 #define RTAX_MAX 9 /* size of array to allocate */ 328 329 #define RT_ROUNDUP2(a, n) ((a) > 0 ? (1 + (((a) - 1U) | ((n) - 1))) : (n)) 330 #define RT_ROUNDUP(a) RT_ROUNDUP2((a), sizeof(uint64_t)) 331 #define RT_ADVANCE(x, n) (x += RT_ROUNDUP((n)->sa_len)) 332 333 struct rt_addrinfo { 334 int rti_addrs; 335 const struct sockaddr *rti_info[RTAX_MAX]; 336 int rti_flags; 337 struct ifaddr *rti_ifa; 338 struct ifnet *rti_ifp; 339 }; 340 341 struct route_cb { 342 int ip_count; 343 int ip6_count; 344 int unused1; 345 int mpls_count; 346 int any_count; 347 }; 348 349 /* 350 * This structure, and the prototypes for the rt_timer_{init,remove_all, 351 * add,timer} functions all used with the kind permission of BSDI. 352 * These allow functions to be called for routes at specific times. 353 */ 354 355 struct rttimer { 356 TAILQ_ENTRY(rttimer) rtt_next; /* entry on timer queue */ 357 LIST_ENTRY(rttimer) rtt_link; /* multiple timers per rtentry */ 358 struct rttimer_queue *rtt_queue; /* back pointer to queue */ 359 struct rtentry *rtt_rt; /* Back pointer to the route */ 360 void (*rtt_func)(struct rtentry *, struct rttimer *); 361 time_t rtt_time; /* When this timer was registered */ 362 }; 363 364 struct rttimer_queue { 365 long rtq_timeout; 366 unsigned long rtq_count; 367 TAILQ_HEAD(, rttimer) rtq_head; 368 LIST_ENTRY(rttimer_queue) rtq_link; 369 }; 370 371 372 struct rtbl; 373 typedef struct rtbl rtbl_t; 374 375 #ifdef _KERNEL 376 377 struct rtbl { 378 struct radix_node_head t_rnh; 379 }; 380 381 struct rt_walkarg { 382 int w_op; 383 int w_arg; 384 int w_given; 385 int w_needed; 386 void * w_where; 387 int w_tmemsize; 388 int w_tmemneeded; 389 void * w_tmem; 390 }; 391 392 #if 0 393 #define RT_DPRINTF(__fmt, ...) do { } while (/*CONSTCOND*/0) 394 #else 395 #define RT_DPRINTF(__fmt, ...) /* do nothing */ 396 #endif 397 398 struct rtwalk { 399 int (*rw_f)(struct rtentry *, void *); 400 void *rw_v; 401 }; 402 403 /* 404 * Global data specific to the routing socket. 405 */ 406 struct route_info { 407 struct sockaddr ri_dst; 408 struct sockaddr ri_src; 409 struct route_cb ri_cb; 410 int ri_maxqlen; 411 struct ifqueue ri_intrq; 412 void *ri_sih; 413 }; 414 415 extern struct route_info route_info; 416 extern struct rtstat rtstat; 417 418 struct socket; 419 420 void rt_init(void); 421 422 int rt_timer_add(struct rtentry *, 423 void(*)(struct rtentry *, struct rttimer *), 424 struct rttimer_queue *); 425 unsigned long 426 rt_timer_count(struct rttimer_queue *); 427 void rt_timer_queue_change(struct rttimer_queue *, long); 428 struct rttimer_queue * 429 rt_timer_queue_create(u_int); 430 void rt_timer_queue_destroy(struct rttimer_queue *); 431 432 void rt_free(struct rtentry *); 433 void rt_unref(struct rtentry *); 434 435 int rt_update(struct rtentry *, struct rt_addrinfo *, void *); 436 int rt_update_prepare(struct rtentry *); 437 void rt_update_finish(struct rtentry *); 438 439 void rt_newmsg(const int, const struct rtentry *); 440 void rt_newmsg_dynamic(const int, const struct rtentry *); 441 struct rtentry * 442 rtalloc1(const struct sockaddr *, int); 443 int rtinit(struct ifaddr *, int, int); 444 void rtredirect(const struct sockaddr *, const struct sockaddr *, 445 const struct sockaddr *, int, const struct sockaddr *, 446 struct rtentry **); 447 int rtrequest(int, const struct sockaddr *, 448 const struct sockaddr *, const struct sockaddr *, int, 449 struct rtentry **); 450 int rtrequest1(int, struct rt_addrinfo *, struct rtentry **); 451 452 int rt_ifa_addlocal(struct ifaddr *); 453 int rt_ifa_remlocal(struct ifaddr *, struct ifaddr *); 454 struct ifaddr * 455 rt_get_ifa(struct rtentry *); 456 void rt_replace_ifa(struct rtentry *, struct ifaddr *); 457 int rt_setgate(struct rtentry *, const struct sockaddr *); 458 459 const struct sockaddr * 460 rt_settag(struct rtentry *, const struct sockaddr *); 461 struct sockaddr * 462 rt_gettag(const struct rtentry *); 463 464 int rt_check_reject_route(const struct rtentry *, const struct ifnet *); 465 void rt_delete_matched_entries(sa_family_t, 466 int (*)(struct rtentry *, void *), void *, bool); 467 void rt_replace_ifa_matched_entries(sa_family_t, 468 int (*)(struct rtentry *, void *), void *, struct ifaddr *); 469 int rt_walktree(sa_family_t, int (*)(struct rtentry *, void *), void *); 470 471 static __inline void 472 rt_assert_referenced(const struct rtentry *rt) 473 { 474 475 KASSERT(rt->rt_refcnt > 0); 476 } 477 478 void rtcache_copy(struct route *, struct route *); 479 void rtcache_free(struct route *); 480 struct rtentry * 481 rtcache_init(struct route *); 482 struct rtentry * 483 rtcache_init_noclone(struct route *); 484 struct rtentry * 485 rtcache_lookup2(struct route *, const struct sockaddr *, int, 486 int *); 487 int rtcache_setdst(struct route *, const struct sockaddr *); 488 struct rtentry * 489 rtcache_update(struct route *, int); 490 491 static __inline void 492 rtcache_invariants(const struct route *ro) 493 { 494 495 KASSERT(ro->ro_sa != NULL || ro->_ro_rt == NULL); 496 } 497 498 static __inline struct rtentry * 499 rtcache_lookup1(struct route *ro, const struct sockaddr *dst, int clone) 500 { 501 int hit; 502 503 return rtcache_lookup2(ro, dst, clone, &hit); 504 } 505 506 static __inline struct rtentry * 507 rtcache_lookup(struct route *ro, const struct sockaddr *dst) 508 { 509 return rtcache_lookup1(ro, dst, 1); 510 } 511 512 static __inline const struct sockaddr * 513 rtcache_getdst(const struct route *ro) 514 { 515 516 rtcache_invariants(ro); 517 return ro->ro_sa; 518 } 519 520 struct rtentry * 521 rtcache_validate(struct route *); 522 523 void rtcache_unref(struct rtentry *, struct route *); 524 525 percpu_t * 526 rtcache_percpu_alloc(void); 527 528 static __inline struct route * 529 rtcache_percpu_getref(percpu_t *pc) 530 { 531 532 return *(struct route **)percpu_getref(pc); 533 } 534 535 static __inline void 536 rtcache_percpu_putref(percpu_t *pc) 537 { 538 539 percpu_putref(pc); 540 } 541 542 543 /* rtsock */ 544 void rt_ieee80211msg(struct ifnet *, int, void *, size_t); 545 void rt_ifannouncemsg(struct ifnet *, int); 546 void rt_ifmsg(struct ifnet *); 547 void rt_missmsg(int, const struct rt_addrinfo *, int, int); 548 struct mbuf * 549 rt_msg1(int, struct rt_addrinfo *, void *, int); 550 int rt_msg3(int, struct rt_addrinfo *, void *, struct rt_walkarg *, int *); 551 void rt_addrmsg(int, struct ifaddr *); 552 void rt_addrmsg_src(int, struct ifaddr *, const struct sockaddr *); 553 void rt_addrmsg_rt(int, struct ifaddr *, int, struct rtentry *); 554 void route_enqueue(struct mbuf *, int); 555 556 struct llentry; 557 void rt_clonedmsg(int, const struct sockaddr *, const struct sockaddr *, 558 const uint8_t *, const struct ifnet *); 559 560 void rt_setmetrics(void *, struct rtentry *); 561 562 /* rtbl */ 563 int rt_addaddr(rtbl_t *, struct rtentry *, const struct sockaddr *); 564 void rt_assert_inactive(const struct rtentry *); 565 struct rtentry * 566 rt_deladdr(rtbl_t *, const struct sockaddr *, 567 const struct sockaddr *); 568 rtbl_t *rt_gettable(sa_family_t); 569 int rt_inithead(rtbl_t **, int); 570 struct rtentry * 571 rt_lookup(rtbl_t *, const struct sockaddr *, 572 const struct sockaddr *); 573 struct rtentry * 574 rt_matchaddr(rtbl_t *, const struct sockaddr *); 575 int rt_refines(const struct sockaddr *, const struct sockaddr *); 576 int rtbl_walktree(sa_family_t, int (*)(struct rtentry *, void *), void *); 577 struct rtentry * 578 rtbl_search_matched_entry(sa_family_t, 579 int (*)(struct rtentry *, void *), void *); 580 void rtbl_init(void); 581 582 void sysctl_net_route_setup(struct sysctllog **, int, const char *); 583 584 void rt_unhandled(const char *, const struct ifnet *, 585 const struct sockaddr *); 586 587 #endif /* _KERNEL */ 588 589 #endif /* !_NET_ROUTE_H_ */ 590
Indexes created Sun Sep 21 16:09:51 GMT 2025