1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 8.4 (Berkeley) 1/9/95 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NET_ROUTE_H_ 36 #define _NET_ROUTE_H_ 37 38 #include <sys/counter.h> 39 #include <net/vnet.h> 40 41 /* 42 * Kernel resident routing tables. 43 * 44 * The routing tables are initialized when interface addresses 45 * are set by making entries for all directly connected interfaces. 46 */ 47 48 /* 49 * Struct route consiste of a destination address, 50 * a route entry pointer, link-layer prepend data pointer along 51 * with its length. 52 */ 53 struct route { 54 struct rtentry *ro_rt; 55 struct llentry *ro_lle; 56 /* 57 * ro_prepend and ro_plen are only used for bpf to pass in a 58 * preformed header. They are not cacheable. 59 */ 60 char *ro_prepend; 61 uint16_t ro_plen; 62 uint16_t ro_flags; 63 uint16_t ro_mtu; /* saved ro_rt mtu */ 64 uint16_t spare; 65 struct sockaddr ro_dst; 66 }; 67 68 #define RT_L2_ME_BIT 2 /* dst L2 addr is our address */ 69 #define RT_MAY_LOOP_BIT 3 /* dst may require loop copy */ 70 #define RT_HAS_HEADER_BIT 4 /* mbuf already have its header prepended */ 71 72 #define RT_L2_ME (1 << RT_L2_ME_BIT) /* 0x0004 */ 73 #define RT_MAY_LOOP (1 << RT_MAY_LOOP_BIT) /* 0x0008 */ 74 #define RT_HAS_HEADER (1 << RT_HAS_HEADER_BIT) /* 0x0010 */ 75 76 #define RT_REJECT 0x0020 /* Destination is reject */ 77 #define RT_BLACKHOLE 0x0040 /* Destination is blackhole */ 78 #define RT_HAS_GW 0x0080 /* Destination has GW */ 79 #define RT_LLE_CACHE 0x0100 /* Cache link layer */ 80 81 struct rt_metrics { 82 u_long rmx_locks; /* Kernel must leave these values alone */ 83 u_long rmx_mtu; /* MTU for this path */ 84 u_long rmx_hopcount; /* max hops expected */ 85 u_long rmx_expire; /* lifetime for route, e.g. redirect */ 86 u_long rmx_recvpipe; /* inbound delay-bandwidth product */ 87 u_long rmx_sendpipe; /* outbound delay-bandwidth product */ 88 u_long rmx_ssthresh; /* outbound gateway buffer limit */ 89 u_long rmx_rtt; /* estimated round trip time */ 90 u_long rmx_rttvar; /* estimated rtt variance */ 91 u_long rmx_pksent; /* packets sent using this route */ 92 u_long rmx_weight; /* route weight */ 93 u_long rmx_nhidx; /* route nexhop index */ 94 u_long rmx_filler[2]; /* will be used for T/TCP later */ 95 }; 96 97 /* 98 * rmx_rtt and rmx_rttvar are stored as microseconds; 99 * RTTTOPRHZ(rtt) converts to a value suitable for use 100 * by a protocol slowtimo counter. 101 */ 102 #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */ 103 #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ)) 104 105 /* lle state is exported in rmx_state rt_metrics field */ 106 #define rmx_state rmx_weight 107 108 /* 109 * Keep a generation count of routing table, incremented on route addition, 110 * so we can invalidate caches. This is accessed without a lock, as precision 111 * is not required. 112 */ 113 typedef volatile u_int rt_gen_t; /* tree generation (for adds) */ 114 #define RT_GEN(fibnum, af) rt_tables_get_gen(fibnum, af) 115 116 #define RT_DEFAULT_FIB 0 /* Explicitly mark fib=0 restricted cases */ 117 #define RT_ALL_FIBS -1 /* Announce event for every fib */ 118 #ifdef _KERNEL 119 extern u_int rt_numfibs; /* number of usable routing tables */ 120 VNET_DECLARE(u_int, rt_add_addr_allfibs); /* Announce interfaces to all fibs */ 121 #define V_rt_add_addr_allfibs VNET(rt_add_addr_allfibs) 122 #endif 123 124 /* 125 * We distinguish between routes to hosts and routes to networks, 126 * preferring the former if available. For each route we infer 127 * the interface to use from the gateway address supplied when 128 * the route was entered. Routes that forward packets through 129 * gateways are marked so that the output routines know to address the 130 * gateway rather than the ultimate destination. 131 */ 132 #ifndef RNF_NORMAL 133 #include <net/radix.h> 134 #ifdef RADIX_MPATH 135 #include <net/radix_mpath.h> 136 #endif 137 #endif 138 139 #if defined(_KERNEL) 140 struct rtentry { 141 struct radix_node rt_nodes[2]; /* tree glue, and other values */ 142 /* 143 * XXX struct rtentry must begin with a struct radix_node (or two!) 144 * because the code does some casts of a 'struct radix_node *' 145 * to a 'struct rtentry *' 146 */ 147 #define rt_key(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_key))) 148 #define rt_mask(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_mask))) 149 #define rt_key_const(r) (*((const struct sockaddr * const *)(&(r)->rt_nodes->rn_key))) 150 #define rt_mask_const(r) (*((const struct sockaddr * const *)(&(r)->rt_nodes->rn_mask))) 151 struct sockaddr *rt_gateway; /* value */ 152 struct ifnet *rt_ifp; /* the answer: interface to use */ 153 struct ifaddr *rt_ifa; /* the answer: interface address to use */ 154 struct nhop_object *rt_nhop; /* nexthop data */ 155 int rt_flags; /* up/down?, host/net */ 156 int rt_refcnt; /* # held references */ 157 u_int rt_fibnum; /* which FIB */ 158 u_long rt_mtu; /* MTU for this path */ 159 u_long rt_weight; /* absolute weight */ 160 u_long rt_expire; /* lifetime for route, e.g. redirect */ 161 #define rt_endzero rt_pksent 162 counter_u64_t rt_pksent; /* packets sent using this route */ 163 struct mtx rt_mtx; /* mutex for routing entry */ 164 struct rtentry *rt_chain; /* pointer to next rtentry to delete */ 165 }; 166 #endif /* _KERNEL */ 167 168 #define RTF_UP 0x1 /* route usable */ 169 #define RTF_GATEWAY 0x2 /* destination is a gateway */ 170 #define RTF_HOST 0x4 /* host entry (net otherwise) */ 171 #define RTF_REJECT 0x8 /* host or net unreachable */ 172 #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ 173 #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ 174 #define RTF_DONE 0x40 /* message confirmed */ 175 /* 0x80 unused, was RTF_DELCLONE */ 176 /* 0x100 unused, was RTF_CLONING */ 177 #define RTF_XRESOLVE 0x200 /* external daemon resolves name */ 178 #define RTF_LLINFO 0x400 /* DEPRECATED - exists ONLY for backward 179 compatibility */ 180 #define RTF_LLDATA 0x400 /* used by apps to add/del L2 entries */ 181 #define RTF_STATIC 0x800 /* manually added */ 182 #define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ 183 #define RTF_PROTO2 0x4000 /* protocol specific routing flag */ 184 #define RTF_PROTO1 0x8000 /* protocol specific routing flag */ 185 /* 0x10000 unused, was RTF_PRCLONING */ 186 /* 0x20000 unused, was RTF_WASCLONED */ 187 #define RTF_PROTO3 0x40000 /* protocol specific routing flag */ 188 #define RTF_FIXEDMTU 0x80000 /* MTU was explicitly specified */ 189 #define RTF_PINNED 0x100000 /* route is immutable */ 190 #define RTF_LOCAL 0x200000 /* route represents a local address */ 191 #define RTF_BROADCAST 0x400000 /* route represents a bcast address */ 192 #define RTF_MULTICAST 0x800000 /* route represents a mcast address */ 193 /* 0x8000000 and up unassigned */ 194 #define RTF_STICKY 0x10000000 /* always route dst->src */ 195 196 #define RTF_RNH_LOCKED 0x40000000 /* radix node head is locked */ 197 198 #define RTF_GWFLAG_COMPAT 0x80000000 /* a compatibility bit for interacting 199 with existing routing apps */ 200 201 /* Mask of RTF flags that are allowed to be modified by RTM_CHANGE. */ 202 #define RTF_FMASK \ 203 (RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ 204 RTF_REJECT | RTF_STATIC | RTF_STICKY) 205 206 /* 207 * fib_ nexthop API flags. 208 */ 209 210 /* Consumer-visible nexthop info flags */ 211 #define NHF_REJECT 0x0010 /* RTF_REJECT */ 212 #define NHF_BLACKHOLE 0x0020 /* RTF_BLACKHOLE */ 213 #define NHF_REDIRECT 0x0040 /* RTF_DYNAMIC|RTF_MODIFIED */ 214 #define NHF_DEFAULT 0x0080 /* Default route */ 215 #define NHF_BROADCAST 0x0100 /* RTF_BROADCAST */ 216 #define NHF_GATEWAY 0x0200 /* RTF_GATEWAY */ 217 #define NHF_HOST 0x0400 /* RTF_HOST */ 218 219 /* Nexthop request flags */ 220 #define NHR_NONE 0x00 /* empty flags field */ 221 #define NHR_IFAIF 0x01 /* Return ifa_ifp interface */ 222 #define NHR_REF 0x02 /* For future use */ 223 224 /* uRPF */ 225 #define NHR_NODEFAULT 0x04 /* do not consider default route */ 226 227 /* Control plane route request flags */ 228 #define NHR_COPY 0x100 /* Copy rte data */ 229 230 #ifdef _KERNEL 231 /* rte<>ro_flags translation */ 232 static inline void 233 rt_update_ro_flags(struct route *ro) 234 { 235 int rt_flags = ro->ro_rt->rt_flags; 236 237 ro->ro_flags &= ~ (RT_REJECT|RT_BLACKHOLE|RT_HAS_GW); 238 239 ro->ro_flags |= (rt_flags & RTF_REJECT) ? RT_REJECT : 0; 240 ro->ro_flags |= (rt_flags & RTF_BLACKHOLE) ? RT_BLACKHOLE : 0; 241 ro->ro_flags |= (rt_flags & RTF_GATEWAY) ? RT_HAS_GW : 0; 242 } 243 #endif 244 245 /* 246 * Routing statistics. 247 */ 248 struct rtstat { 249 uint64_t rts_badredirect; /* bogus redirect calls */ 250 uint64_t rts_dynamic; /* routes created by redirects */ 251 uint64_t rts_newgateway; /* routes modified by redirects */ 252 uint64_t rts_unreach; /* lookups which failed */ 253 uint64_t rts_wildcard; /* lookups satisfied by a wildcard */ 254 uint64_t rts_nh_idx_alloc_failure; /* nexthop index alloc failure*/ 255 uint64_t rts_nh_alloc_failure; /* nexthop allocation failure*/ 256 }; 257 258 /* 259 * Structures for routing messages. 260 */ 261 struct rt_msghdr { 262 u_short rtm_msglen; /* to skip over non-understood messages */ 263 u_char rtm_version; /* future binary compatibility */ 264 u_char rtm_type; /* message type */ 265 u_short rtm_index; /* index for associated ifp */ 266 u_short _rtm_spare1; 267 int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ 268 int rtm_addrs; /* bitmask identifying sockaddrs in msg */ 269 pid_t rtm_pid; /* identify sender */ 270 int rtm_seq; /* for sender to identify action */ 271 int rtm_errno; /* why failed */ 272 int rtm_fmask; /* bitmask used in RTM_CHANGE message */ 273 u_long rtm_inits; /* which metrics we are initializing */ 274 struct rt_metrics rtm_rmx; /* metrics themselves */ 275 }; 276 277 #define RTM_VERSION 5 /* Up the ante and ignore older versions */ 278 279 /* 280 * Message types. 281 * 282 * The format for each message is annotated below using the following 283 * identifiers: 284 * 285 * (1) struct rt_msghdr 286 * (2) struct ifa_msghdr 287 * (3) struct if_msghdr 288 * (4) struct ifma_msghdr 289 * (5) struct if_announcemsghdr 290 * 291 */ 292 #define RTM_ADD 0x1 /* (1) Add Route */ 293 #define RTM_DELETE 0x2 /* (1) Delete Route */ 294 #define RTM_CHANGE 0x3 /* (1) Change Metrics or flags */ 295 #define RTM_GET 0x4 /* (1) Report Metrics */ 296 #define RTM_LOSING 0x5 /* (1) Kernel Suspects Partitioning */ 297 #define RTM_REDIRECT 0x6 /* (1) Told to use different route */ 298 #define RTM_MISS 0x7 /* (1) Lookup failed on this address */ 299 #define RTM_LOCK 0x8 /* (1) fix specified metrics */ 300 /* 0x9 */ 301 /* 0xa */ 302 #define RTM_RESOLVE 0xb /* (1) req to resolve dst to LL addr */ 303 #define RTM_NEWADDR 0xc /* (2) address being added to iface */ 304 #define RTM_DELADDR 0xd /* (2) address being removed from iface */ 305 #define RTM_IFINFO 0xe /* (3) iface going up/down etc. */ 306 #define RTM_NEWMADDR 0xf /* (4) mcast group membership being added to if */ 307 #define RTM_DELMADDR 0x10 /* (4) mcast group membership being deleted */ 308 #define RTM_IFANNOUNCE 0x11 /* (5) iface arrival/departure */ 309 #define RTM_IEEE80211 0x12 /* (5) IEEE80211 wireless event */ 310 311 /* 312 * Bitmask values for rtm_inits and rmx_locks. 313 */ 314 #define RTV_MTU 0x1 /* init or lock _mtu */ 315 #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ 316 #define RTV_EXPIRE 0x4 /* init or lock _expire */ 317 #define RTV_RPIPE 0x8 /* init or lock _recvpipe */ 318 #define RTV_SPIPE 0x10 /* init or lock _sendpipe */ 319 #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ 320 #define RTV_RTT 0x40 /* init or lock _rtt */ 321 #define RTV_RTTVAR 0x80 /* init or lock _rttvar */ 322 #define RTV_WEIGHT 0x100 /* init or lock _weight */ 323 324 /* 325 * Bitmask values for rtm_addrs. 326 */ 327 #define RTA_DST 0x1 /* destination sockaddr present */ 328 #define RTA_GATEWAY 0x2 /* gateway sockaddr present */ 329 #define RTA_NETMASK 0x4 /* netmask sockaddr present */ 330 #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ 331 #define RTA_IFP 0x10 /* interface name sockaddr present */ 332 #define RTA_IFA 0x20 /* interface addr sockaddr present */ 333 #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ 334 #define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ 335 336 /* 337 * Index offsets for sockaddr array for alternate internal encoding. 338 */ 339 #define RTAX_DST 0 /* destination sockaddr present */ 340 #define RTAX_GATEWAY 1 /* gateway sockaddr present */ 341 #define RTAX_NETMASK 2 /* netmask sockaddr present */ 342 #define RTAX_GENMASK 3 /* cloning mask sockaddr present */ 343 #define RTAX_IFP 4 /* interface name sockaddr present */ 344 #define RTAX_IFA 5 /* interface addr sockaddr present */ 345 #define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ 346 #define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ 347 #define RTAX_MAX 8 /* size of array to allocate */ 348 349 struct nhop_object; 350 typedef int rt_filter_f_t(const struct rtentry *, const struct nhop_object *, 351 void *); 352 353 struct rt_addrinfo { 354 int rti_addrs; /* Route RTF_ flags */ 355 int rti_flags; /* Route RTF_ flags */ 356 struct sockaddr *rti_info[RTAX_MAX]; /* Sockaddr data */ 357 struct ifaddr *rti_ifa; /* value of rt_ifa addr */ 358 struct ifnet *rti_ifp; /* route interface */ 359 rt_filter_f_t *rti_filter; /* filter function */ 360 void *rti_filterdata; /* filter paramenters */ 361 u_long rti_mflags; /* metrics RTV_ flags */ 362 u_long rti_spare; /* Will be used for fib */ 363 struct rt_metrics *rti_rmx; /* Pointer to route metrics */ 364 }; 365 366 /* 367 * This macro returns the size of a struct sockaddr when passed 368 * through a routing socket. Basically we round up sa_len to 369 * a multiple of sizeof(long), with a minimum of sizeof(long). 370 * The case sa_len == 0 should only apply to empty structures. 371 */ 372 #define SA_SIZE(sa) \ 373 ( (((struct sockaddr *)(sa))->sa_len == 0) ? \ 374 sizeof(long) : \ 375 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(long) - 1) ) ) 376 377 #define sa_equal(a, b) ( \ 378 (((const struct sockaddr *)(a))->sa_len == ((const struct sockaddr *)(b))->sa_len) && \ 379 (bcmp((a), (b), ((const struct sockaddr *)(b))->sa_len) == 0)) 380 381 #ifdef _KERNEL 382 383 #define RT_LINK_IS_UP(ifp) (!((ifp)->if_capabilities & IFCAP_LINKSTATE) \ 384 || (ifp)->if_link_state == LINK_STATE_UP) 385 386 #define RT_LOCK_INIT(_rt) \ 387 mtx_init(&(_rt)->rt_mtx, "rtentry", NULL, MTX_DEF | MTX_DUPOK | MTX_NEW) 388 #define RT_LOCK(_rt) mtx_lock(&(_rt)->rt_mtx) 389 #define RT_UNLOCK(_rt) mtx_unlock(&(_rt)->rt_mtx) 390 #define RT_LOCK_DESTROY(_rt) mtx_destroy(&(_rt)->rt_mtx) 391 #define RT_LOCK_ASSERT(_rt) mtx_assert(&(_rt)->rt_mtx, MA_OWNED) 392 #define RT_UNLOCK_COND(_rt) do { \ 393 if (mtx_owned(&(_rt)->rt_mtx)) \ 394 mtx_unlock(&(_rt)->rt_mtx); \ 395 } while (0) 396 397 #define RT_ADDREF(_rt) do { \ 398 RT_LOCK_ASSERT(_rt); \ 399 KASSERT((_rt)->rt_refcnt >= 0, \ 400 ("negative refcnt %d", (_rt)->rt_refcnt)); \ 401 (_rt)->rt_refcnt++; \ 402 } while (0) 403 404 #define RT_REMREF(_rt) do { \ 405 RT_LOCK_ASSERT(_rt); \ 406 KASSERT((_rt)->rt_refcnt > 0, \ 407 ("bogus refcnt %d", (_rt)->rt_refcnt)); \ 408 (_rt)->rt_refcnt--; \ 409 } while (0) 410 411 #define RTFREE_LOCKED(_rt) do { \ 412 if ((_rt)->rt_refcnt <= 1) \ 413 rtfree(_rt); \ 414 else { \ 415 RT_REMREF(_rt); \ 416 RT_UNLOCK(_rt); \ 417 } \ 418 /* guard against invalid refs */ \ 419 _rt = 0; \ 420 } while (0) 421 422 #define RTFREE(_rt) do { \ 423 RT_LOCK(_rt); \ 424 RTFREE_LOCKED(_rt); \ 425 } while (0) 426 427 #define RTFREE_FUNC(_rt) rtfree_func(_rt) 428 429 #define RO_RTFREE(_ro) do { \ 430 if ((_ro)->ro_rt) \ 431 RTFREE((_ro)->ro_rt); \ 432 } while (0) 433 434 #define RO_INVALIDATE_CACHE(ro) do { \ 435 RO_RTFREE(ro); \ 436 if ((ro)->ro_lle != NULL) { \ 437 LLE_FREE((ro)->ro_lle); \ 438 (ro)->ro_lle = NULL; \ 439 } \ 440 } while (0) 441 442 /* 443 * Validate a cached route based on a supplied cookie. If there is an 444 * out-of-date cache, simply free it. Update the generation number 445 * for the new allocation 446 */ 447 #define RT_VALIDATE(ro, cookiep, fibnum) do { \ 448 rt_gen_t cookie = RT_GEN(fibnum, (ro)->ro_dst.sa_family); \ 449 if (*(cookiep) != cookie) { \ 450 RO_INVALIDATE_CACHE(ro); \ 451 *(cookiep) = cookie; \ 452 } \ 453 } while (0) 454 455 struct ifmultiaddr; 456 struct rib_head; 457 458 void rt_ieee80211msg(struct ifnet *, int, void *, size_t); 459 void rt_ifannouncemsg(struct ifnet *, int); 460 void rt_ifmsg(struct ifnet *); 461 void rt_missmsg(int, struct rt_addrinfo *, int, int); 462 void rt_missmsg_fib(int, struct rt_addrinfo *, int, int, int); 463 void rt_newaddrmsg_fib(int, struct ifaddr *, struct rtentry *, int); 464 int rt_addrmsg(int, struct ifaddr *, int); 465 int rt_routemsg(int, struct rtentry *, struct ifnet *ifp, int, int); 466 int rt_routemsg_info(int, struct rt_addrinfo *, int); 467 void rt_newmaddrmsg(int, struct ifmultiaddr *); 468 int rt_setgate(struct rtentry *, struct sockaddr *, struct sockaddr *); 469 void rt_maskedcopy(struct sockaddr *, struct sockaddr *, struct sockaddr *); 470 struct rib_head *rt_table_init(int, int, u_int); 471 void rt_table_destroy(struct rib_head *); 472 u_int rt_tables_get_gen(int table, int fam); 473 474 int rtsock_addrmsg(int, struct ifaddr *, int); 475 int rtsock_routemsg(int, struct rtentry *, struct ifnet *ifp, int, int); 476 int rtsock_routemsg_info(int, struct rt_addrinfo *, int); 477 478 /* 479 * Note the following locking behavior: 480 * 481 * rtalloc1() returns a locked rtentry 482 * 483 * rtfree() and RTFREE_LOCKED() require a locked rtentry 484 * 485 * RTFREE() uses an unlocked entry. 486 */ 487 488 void rtfree(struct rtentry *); 489 void rtfree_func(struct rtentry *); 490 void rt_updatemtu(struct ifnet *); 491 492 typedef int rt_walktree_f_t(struct rtentry *, void *); 493 typedef void rt_setwarg_t(struct rib_head *, uint32_t, int, void *); 494 void rib_walk_del(u_int fibnum, int family, rt_filter_f_t *filter_f, 495 void *arg, bool report); 496 void rt_foreach_fib_walk(int af, rt_setwarg_t *, rt_walktree_f_t *, void *); 497 void rt_foreach_fib_walk_del(int af, rt_filter_f_t *filter_f, void *arg); 498 void rt_flushifroutes_af(struct ifnet *, int); 499 void rt_flushifroutes(struct ifnet *ifp); 500 501 /* XXX MRT COMPAT VERSIONS THAT SET UNIVERSE to 0 */ 502 /* Thes are used by old code not yet converted to use multiple FIBS */ 503 struct rtentry *rtalloc1(struct sockaddr *, int, u_long); 504 int rtinit(struct ifaddr *, int, int); 505 506 /* XXX MRT NEW VERSIONS THAT USE FIBs 507 * For now the protocol indepedent versions are the same as the AF_INET ones 508 * but this will change.. 509 */ 510 void rtalloc_ign_fib(struct route *ro, u_long ignflags, u_int fibnum); 511 struct rtentry *rtalloc1_fib(struct sockaddr *, int, u_long, u_int); 512 int rtioctl_fib(u_long, caddr_t, u_int); 513 int rtrequest_fib(int, struct sockaddr *, 514 struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int); 515 int rtrequest1_fib(int, struct rt_addrinfo *, struct rtentry **, u_int); 516 int rib_lookup_info(uint32_t, const struct sockaddr *, uint32_t, uint32_t, 517 struct rt_addrinfo *); 518 void rib_free_info(struct rt_addrinfo *info); 519 int rib_add_redirect(u_int fibnum, struct sockaddr *dst, 520 struct sockaddr *gateway, struct sockaddr *author, struct ifnet *ifp, 521 int flags, int expire_sec); 522 523 /* New API */ 524 void rib_walk(int af, u_int fibnum, rt_walktree_f_t *wa_f, void *arg); 525 #endif 526 527 #endif 528