1 /* $OpenBSD: route.h,v 1.211 2025/01/03 21:27:40 bluhm Exp $ */ 2 /* $NetBSD: route.h,v 1.9 1996/02/13 22:00:49 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)route.h 8.3 (Berkeley) 4/19/94 33 */ 34 35 #ifndef _NET_ROUTE_H_ 36 #define _NET_ROUTE_H_ 37 38 /* 39 * Locks used to protect struct members in this file: 40 * I immutable after creation 41 * N net lock 42 * X exclusive net lock, or shared net lock + kernel lock 43 * R art (rtable) lock 44 * L arp/nd6/etc lock for updates, net lock for reads 45 * T rttimer_mtx route timer lists 46 */ 47 48 /* 49 * Kernel resident routing tables. 50 * 51 * The routing tables are initialized when interface addresses 52 * are set by making entries for all directly connected interfaces. 53 */ 54 55 #ifdef _KERNEL 56 /* 57 * These numbers are used by reliable protocols for determining 58 * retransmission behavior and are included in the routing structure. 59 */ 60 struct rt_kmetrics { 61 u_int64_t rmx_pksent; /* packets sent using this route */ 62 int64_t rmx_expire; /* lifetime for route, e.g. redirect */ 63 u_int rmx_locks; /* Kernel must leave these values */ 64 u_int rmx_mtu; /* [a] MTU for this path */ 65 }; 66 #endif 67 68 /* 69 * Huge version for userland compatibility. 70 */ 71 struct rt_metrics { 72 u_int64_t rmx_pksent; /* packets sent using this route */ 73 int64_t rmx_expire; /* lifetime for route, e.g. redirect */ 74 u_int rmx_locks; /* Kernel must leave these values */ 75 u_int rmx_mtu; /* MTU for this path */ 76 u_int rmx_refcnt; /* # references hold */ 77 /* some apps may still need these no longer used metrics */ 78 u_int rmx_hopcount; /* max hops expected */ 79 u_int rmx_recvpipe; /* inbound delay-bandwidth product */ 80 u_int rmx_sendpipe; /* outbound delay-bandwidth product */ 81 u_int rmx_ssthresh; /* outbound gateway buffer limit */ 82 u_int rmx_rtt; /* estimated round trip time */ 83 u_int rmx_rttvar; /* estimated rtt variance */ 84 u_int rmx_pad; 85 }; 86 87 #ifdef _KERNEL 88 /* 89 * rmx_rtt and rmx_rttvar are stored as microseconds; 90 * RTTTOPRHZ(rtt) converts to a value suitable for use 91 * by a protocol slowtimo counter. 92 */ 93 #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */ 94 #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ)) 95 96 #include <sys/queue.h> 97 #include <net/rtable.h> 98 99 struct rttimer; 100 101 /* 102 * We distinguish between routes to hosts and routes to networks, 103 * preferring the former if available. For each route we infer 104 * the interface to use from the gateway address supplied when 105 * the route was entered. Routes that forward packets through 106 * gateways are marked with RTF_GATEWAY so that the output routines 107 * know to address the gateway rather than the ultimate destination. 108 * 109 * How the RT_gw union is used also depends on RTF_GATEWAY. With 110 * RTF_GATEWAY set, rt_gwroute points at the rtentry for the rt_gateway 111 * address. If RTF_GATEWAY is not set, rt_cachecnt contains the 112 * number of RTF_GATEWAY rtentry structs with their rt_gwroute pointing 113 * at this rtentry. 114 */ 115 116 struct rtentry { 117 struct sockaddr *rt_dest; /* [I] destination */ 118 SRPL_ENTRY(rtentry) rt_next; /* [R] next mpath entry to our dst */ 119 struct sockaddr *rt_gateway; /* [X] gateway address */ 120 struct ifaddr *rt_ifa; /* [N] interface addr to use */ 121 caddr_t rt_llinfo; /* [L] pointer to link level info or 122 an MPLS structure */ 123 union { 124 struct rtentry *_nh; /* [X] rtentry for rt_gateway */ 125 unsigned int _ref; /* [X] # gateway rtentry refs */ 126 } RT_gw; 127 #define rt_gwroute RT_gw._nh 128 #define rt_cachecnt RT_gw._ref 129 struct rtentry *rt_parent; /* [N] if cloned, parent rtentry */ 130 LIST_HEAD(, rttimer) rt_timer; /* queue of timeouts for misc funcs */ 131 struct rt_kmetrics rt_rmx; /* metrics used by rx'ing protocols */ 132 unsigned int rt_ifidx; /* [N] interface to use */ 133 unsigned int rt_flags; /* [X] up/down?, host/net */ 134 struct refcnt rt_refcnt; /* # held references */ 135 int rt_plen; /* [I] prefix length */ 136 uint16_t rt_labelid; /* [N] route label ID */ 137 uint8_t rt_priority; /* [N] routing priority to use */ 138 }; 139 #define rt_use rt_rmx.rmx_pksent 140 #define rt_expire rt_rmx.rmx_expire 141 #define rt_locks rt_rmx.rmx_locks 142 #define rt_mtu rt_rmx.rmx_mtu 143 144 #endif /* _KERNEL */ 145 146 /* bitmask values for rtm_flags */ 147 #define RTF_UP 0x1 /* route usable */ 148 #define RTF_GATEWAY 0x2 /* destination is a gateway */ 149 #define RTF_HOST 0x4 /* host entry (net otherwise) */ 150 #define RTF_REJECT 0x8 /* host or net unreachable */ 151 #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ 152 #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ 153 #define RTF_DONE 0x40 /* message confirmed */ 154 #define RTF_CLONING 0x100 /* generate new routes on use */ 155 #define RTF_MULTICAST 0x200 /* route associated to a mcast addr. */ 156 #define RTF_LLINFO 0x400 /* generated by ARP or ND */ 157 #define RTF_STATIC 0x800 /* manually added */ 158 #define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ 159 #define RTF_PROTO3 0x2000 /* protocol specific routing flag */ 160 #define RTF_PROTO2 0x4000 /* protocol specific routing flag */ 161 #define RTF_ANNOUNCE RTF_PROTO2 /* announce L2 entry */ 162 #define RTF_PROTO1 0x8000 /* protocol specific routing flag */ 163 #define RTF_CLONED 0x10000 /* this is a cloned route */ 164 #define RTF_CACHED 0x20000 /* cached by a RTF_GATEWAY entry */ 165 #define RTF_MPATH 0x40000 /* multipath route or operation */ 166 #define RTF_MPLS 0x100000 /* MPLS additional infos */ 167 #define RTF_LOCAL 0x200000 /* route to a local address */ 168 #define RTF_BROADCAST 0x400000 /* route associated to a bcast addr. */ 169 #define RTF_CONNECTED 0x800000 /* interface route */ 170 #define RTF_BFD 0x1000000 /* Link state controlled by BFD */ 171 172 /* mask of RTF flags that are allowed to be modified by RTM_CHANGE */ 173 #define RTF_FMASK \ 174 (RTF_LLINFO | RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ 175 RTF_REJECT | RTF_STATIC | RTF_MPLS | RTF_BFD) 176 177 /* Routing priorities used by the different routing protocols */ 178 #define RTP_NONE 0 /* unset priority use sane default */ 179 #define RTP_LOCAL 1 /* local address routes (must be the highest) */ 180 #define RTP_CONNECTED 4 /* directly connected routes */ 181 #define RTP_STATIC 8 /* static routes base priority */ 182 #define RTP_EIGRP 28 /* EIGRP routes */ 183 #define RTP_OSPF 32 /* OSPF routes */ 184 #define RTP_ISIS 36 /* IS-IS routes */ 185 #define RTP_RIP 40 /* RIP routes */ 186 #define RTP_BGP 48 /* BGP routes */ 187 #define RTP_DEFAULT 56 /* routes that have nothing set */ 188 #define RTP_PROPOSAL_STATIC 57 189 #define RTP_PROPOSAL_DHCLIENT 58 190 #define RTP_PROPOSAL_SLAAC 59 191 #define RTP_PROPOSAL_UMB 60 192 #define RTP_PROPOSAL_PPP 61 193 #define RTP_PROPOSAL_SOLICIT 62 /* request reply of all RTM_PROPOSAL */ 194 #define RTP_MAX 63 /* maximum priority */ 195 #define RTP_ANY 64 /* any of the above */ 196 #define RTP_MASK 0x7f 197 #define RTP_DOWN 0x80 /* route/link is down */ 198 199 /* 200 * Routing statistics. 201 */ 202 struct rtstat { 203 u_int32_t rts_badredirect; /* bogus redirect calls */ 204 u_int32_t rts_dynamic; /* routes created by redirects */ 205 u_int32_t rts_newgateway; /* routes modified by redirects */ 206 u_int32_t rts_unreach; /* lookups which failed */ 207 u_int32_t rts_wildcard; /* lookups satisfied by a wildcard */ 208 }; 209 210 /* 211 * Routing Table Info. 212 */ 213 struct rt_tableinfo { 214 u_short rti_tableid; /* routing table id */ 215 u_short rti_domainid; /* routing domain id */ 216 }; 217 218 /* 219 * Structures for routing messages. 220 */ 221 struct rt_msghdr { 222 u_short rtm_msglen; /* to skip over non-understood messages */ 223 u_char rtm_version; /* future binary compatibility */ 224 u_char rtm_type; /* message type */ 225 u_short rtm_hdrlen; /* sizeof(rt_msghdr) to skip over the header */ 226 u_short rtm_index; /* index for associated ifp */ 227 u_short rtm_tableid; /* routing table id */ 228 u_char rtm_priority; /* routing priority */ 229 u_char rtm_mpls; /* MPLS additional infos */ 230 int rtm_addrs; /* bitmask identifying sockaddrs in msg */ 231 int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ 232 int rtm_fmask; /* bitmask used in RTM_CHANGE message */ 233 pid_t rtm_pid; /* identify sender */ 234 int rtm_seq; /* for sender to identify action */ 235 int rtm_errno; /* why failed */ 236 u_int rtm_inits; /* which metrics we are initializing */ 237 struct rt_metrics rtm_rmx; /* metrics themselves */ 238 }; 239 /* overload no longer used field */ 240 #define rtm_use rtm_rmx.rmx_pksent 241 242 #define RTM_VERSION 5 /* Up the ante and ignore older versions */ 243 244 #define RTM_MAXSIZE 2048 /* Maximum size of an accepted route msg */ 245 246 /* values for rtm_type */ 247 #define RTM_ADD 0x1 /* Add Route */ 248 #define RTM_DELETE 0x2 /* Delete Route */ 249 #define RTM_CHANGE 0x3 /* Change Metrics or flags */ 250 #define RTM_GET 0x4 /* Report Metrics */ 251 #define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */ 252 #define RTM_REDIRECT 0x6 /* Told to use different route */ 253 #define RTM_MISS 0x7 /* Lookup failed on this address */ 254 #define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */ 255 #define RTM_NEWADDR 0xc /* address being added to iface */ 256 #define RTM_DELADDR 0xd /* address being removed from iface */ 257 #define RTM_IFINFO 0xe /* iface going up/down etc. */ 258 #define RTM_IFANNOUNCE 0xf /* iface arrival/departure */ 259 #define RTM_DESYNC 0x10 /* route socket buffer overflow */ 260 #define RTM_INVALIDATE 0x11 /* Invalidate cache of L2 route */ 261 #define RTM_BFD 0x12 /* bidirectional forwarding detection */ 262 #define RTM_PROPOSAL 0x13 /* proposal for resolvd(8) */ 263 #define RTM_CHGADDRATTR 0x14 /* address attribute change */ 264 #define RTM_80211INFO 0x15 /* 80211 iface change */ 265 #define RTM_SOURCE 0x16 /* set source address */ 266 267 #define RTV_MTU 0x1 /* init or lock _mtu */ 268 #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ 269 #define RTV_EXPIRE 0x4 /* init or lock _expire */ 270 #define RTV_RPIPE 0x8 /* init or lock _recvpipe */ 271 #define RTV_SPIPE 0x10 /* init or lock _sendpipe */ 272 #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ 273 #define RTV_RTT 0x40 /* init or lock _rtt */ 274 #define RTV_RTTVAR 0x80 /* init or lock _rttvar */ 275 276 /* 277 * Bitmask values for rtm_addrs. 278 */ 279 #define RTA_DST 0x1 /* destination sockaddr present */ 280 #define RTA_GATEWAY 0x2 /* gateway sockaddr present */ 281 #define RTA_NETMASK 0x4 /* netmask sockaddr present */ 282 #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ 283 #define RTA_IFP 0x10 /* interface name sockaddr present */ 284 #define RTA_IFA 0x20 /* interface addr sockaddr present */ 285 #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ 286 #define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ 287 #define RTA_SRC 0x100 /* source sockaddr present */ 288 #define RTA_SRCMASK 0x200 /* source netmask present */ 289 #define RTA_LABEL 0x400 /* route label present */ 290 #define RTA_BFD 0x800 /* bfd present */ 291 #define RTA_DNS 0x1000 /* DNS Servers sockaddr present */ 292 #define RTA_STATIC 0x2000 /* RFC 3442 encoded static routes present */ 293 #define RTA_SEARCH 0x4000 /* RFC 3397 encoded search path present */ 294 295 /* 296 * Index offsets for sockaddr array for alternate internal encoding. 297 */ 298 #define RTAX_DST 0 /* destination sockaddr present */ 299 #define RTAX_GATEWAY 1 /* gateway sockaddr present */ 300 #define RTAX_NETMASK 2 /* netmask sockaddr present */ 301 #define RTAX_GENMASK 3 /* cloning mask sockaddr present */ 302 #define RTAX_IFP 4 /* interface name sockaddr present */ 303 #define RTAX_IFA 5 /* interface addr sockaddr present */ 304 #define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ 305 #define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ 306 #define RTAX_SRC 8 /* source sockaddr present */ 307 #define RTAX_SRCMASK 9 /* source netmask present */ 308 #define RTAX_LABEL 10 /* route label present */ 309 #define RTAX_BFD 11 /* bfd present */ 310 #define RTAX_DNS 12 /* DNS Server(s) sockaddr present */ 311 #define RTAX_STATIC 13 /* RFC 3442 encoded static routes present */ 312 #define RTAX_SEARCH 14 /* RFC 3397 encoded search path present */ 313 #define RTAX_MAX 15 /* size of array to allocate */ 314 315 /* 316 * setsockopt defines used for the filtering. 317 */ 318 #define ROUTE_MSGFILTER 1 /* bitmask to specify which types should be 319 sent to the client. */ 320 #define ROUTE_TABLEFILTER 2 /* change routing table the socket is listening 321 on, RTABLE_ANY listens on all tables. */ 322 #define ROUTE_PRIOFILTER 3 /* only pass updates with a priority higher or 323 equal (actual value lower) to the specified 324 priority. */ 325 #define ROUTE_FLAGFILTER 4 /* do not pass updates for routes with flags 326 in this bitmask. */ 327 328 #define ROUTE_FILTER(m) (1 << (m)) 329 #define RTABLE_ANY 0xffffffff 330 331 #define RTLABEL_LEN 32 332 333 struct sockaddr_rtlabel { 334 u_int8_t sr_len; /* total length */ 335 sa_family_t sr_family; /* address family */ 336 char sr_label[RTLABEL_LEN]; 337 }; 338 339 #define RTDNS_LEN 128 340 341 struct sockaddr_rtdns { 342 u_int8_t sr_len; /* total length */ 343 sa_family_t sr_family; /* address family */ 344 char sr_dns[RTDNS_LEN]; 345 }; 346 347 #ifdef _KERNEL 348 349 static inline struct sockaddr * 350 srtdnstosa(struct sockaddr_rtdns *sdns) 351 { 352 return ((struct sockaddr *)(sdns)); 353 } 354 355 #endif 356 357 #define RTSTATIC_LEN 128 358 359 struct sockaddr_rtstatic { 360 u_int8_t sr_len; /* total length */ 361 sa_family_t sr_family; /* address family */ 362 char sr_static[RTSTATIC_LEN]; 363 }; 364 365 #define RTSEARCH_LEN 128 366 367 struct sockaddr_rtsearch { 368 u_int8_t sr_len; /* total length */ 369 sa_family_t sr_family; /* address family */ 370 char sr_search[RTSEARCH_LEN]; 371 }; 372 373 struct rt_addrinfo { 374 int rti_addrs; 375 const struct sockaddr *rti_info[RTAX_MAX]; 376 int rti_flags; 377 struct ifaddr *rti_ifa; 378 struct rt_msghdr *rti_rtm; 379 u_char rti_mpls; 380 }; 381 382 #ifdef __BSD_VISIBLE 383 384 #include <netinet/in.h> 385 386 /* 387 * A route consists of a destination address and a reference 388 * to a routing entry. These are often held by protocols 389 * in their control blocks, e.g. inpcb. 390 */ 391 struct route { 392 struct rtentry *ro_rt; 393 u_long ro_generation; 394 u_long ro_tableid; /* u_long because of alignment */ 395 union { 396 struct sockaddr ro_dstsa; 397 struct sockaddr_in ro_dstsin; 398 struct sockaddr_in6 ro_dstsin6; 399 }; 400 union { 401 struct in_addr ro_srcin; 402 struct in6_addr ro_srcin6; 403 }; 404 }; 405 406 #endif /* __BSD_VISIBLE */ 407 408 #ifdef _KERNEL 409 410 #include <sys/percpu.h> 411 412 enum rtstat_counters { 413 rts_badredirect, /* bogus redirect calls */ 414 rts_dynamic, /* routes created by redirects */ 415 rts_newgateway, /* routes modified by redirects */ 416 rts_unreach, /* lookups which failed */ 417 rts_wildcard, /* lookups satisfied by a wildcard */ 418 419 rts_ncounters 420 }; 421 422 static inline void 423 rtstat_inc(enum rtstat_counters c) 424 { 425 extern struct cpumem *rtcounters; 426 427 counters_inc(rtcounters, c); 428 } 429 430 /* 431 * This structure, and the prototypes for the rt_timer_{init,remove_all, 432 * add,timer} functions all used with the kind permission of BSDI. 433 * These allow functions to be called for routes at specific times. 434 */ 435 struct rttimer_queue { 436 TAILQ_HEAD(, rttimer) rtq_head; /* [T] */ 437 LIST_ENTRY(rttimer_queue) rtq_link; /* [T] */ 438 void (*rtq_func) /* [I] callback */ 439 (struct rtentry *, u_int); 440 unsigned long rtq_count; /* [T] */ 441 int rtq_timeout; /* [T] */ 442 }; 443 444 const char *rtlabel_id2name_locked(u_int16_t); 445 const char *rtlabel_id2name(u_int16_t, char *, size_t); 446 u_int16_t rtlabel_name2id(const char *); 447 struct sockaddr *rtlabel_id2sa(u_int16_t, struct sockaddr_rtlabel *); 448 void rtlabel_unref(u_int16_t); 449 450 /* 451 * Values for additional argument to rtalloc() 452 */ 453 #define RT_RESOLVE 1 454 455 extern struct rtstat rtstat; 456 extern u_long rtgeneration; 457 458 struct mbuf; 459 struct socket; 460 struct ifnet; 461 struct sockaddr_in6; 462 struct if_ieee80211_data; 463 struct bfd_config; 464 465 void route_init(void); 466 int route_cache(struct route *, const struct in_addr *, 467 const struct in_addr *, u_int); 468 struct rtentry *route_mpath(struct route *, const struct in_addr *, 469 const struct in_addr *, u_int); 470 int route6_cache(struct route *, const struct in6_addr *, 471 const struct in6_addr *, u_int); 472 struct rtentry *route6_mpath(struct route *, const struct in6_addr *, 473 const struct in6_addr *, u_int); 474 void rtm_ifchg(struct ifnet *); 475 void rtm_ifannounce(struct ifnet *, int); 476 void rtm_bfd(struct bfd_config *); 477 void rtm_80211info(struct ifnet *, struct if_ieee80211_data *); 478 void rt_maskedcopy(struct sockaddr *, 479 struct sockaddr *, struct sockaddr *); 480 struct sockaddr *rt_plen2mask(struct rtentry *, struct sockaddr_in6 *); 481 void rtm_send(struct rtentry *, int, int, unsigned int); 482 void rtm_addr(int, struct ifaddr *); 483 void rtm_miss(int, struct rt_addrinfo *, int, uint8_t, u_int, int, u_int); 484 void rtm_proposal(struct ifnet *, struct rt_addrinfo *, int, uint8_t); 485 int rt_setgate(struct rtentry *, const struct sockaddr *, u_int); 486 struct rtentry *rt_getll(struct rtentry *); 487 488 void rt_timer_init(void); 489 int rt_timer_add(struct rtentry *, 490 struct rttimer_queue *, u_int); 491 void rt_timer_remove_all(struct rtentry *); 492 time_t rt_timer_get_expire(const struct rtentry *); 493 void rt_timer_queue_init(struct rttimer_queue *, int, 494 void(*)(struct rtentry *, u_int)); 495 void rt_timer_queue_change(struct rttimer_queue *, int); 496 void rt_timer_queue_flush(struct rttimer_queue *); 497 unsigned long rt_timer_queue_count(struct rttimer_queue *); 498 void rt_timer_timer(void *); 499 500 int rt_mpls_set(struct rtentry *, const struct sockaddr *, uint8_t); 501 void rt_mpls_clear(struct rtentry *); 502 503 int rtisvalid(struct rtentry *); 504 int rt_hash(struct rtentry *, const struct sockaddr *, uint32_t *); 505 struct rtentry *rtalloc_mpath(const struct sockaddr *, uint32_t *, u_int); 506 struct rtentry *rtalloc(const struct sockaddr *, int, unsigned int); 507 void rtref(struct rtentry *); 508 void rtfree(struct rtentry *); 509 510 int rt_ifa_add(struct ifaddr *, int, struct sockaddr *, unsigned int); 511 int rt_ifa_del(struct ifaddr *, int, struct sockaddr *, unsigned int); 512 void rt_ifa_purge(struct ifaddr *); 513 int rt_ifa_addlocal(struct ifaddr *); 514 int rt_ifa_dellocal(struct ifaddr *); 515 void rtredirect(struct sockaddr *, struct sockaddr *, struct sockaddr *, 516 struct rtentry **, unsigned int); 517 int rtrequest(int, struct rt_addrinfo *, u_int8_t, struct rtentry **, 518 u_int); 519 int rtrequest_delete(struct rt_addrinfo *, u_int8_t, struct ifnet *, 520 struct rtentry **, u_int); 521 int rt_if_track(struct ifnet *); 522 int rt_if_linkstate_change(struct rtentry *, void *, u_int); 523 int rtdeletemsg(struct rtentry *, struct ifnet *, u_int); 524 #endif /* _KERNEL */ 525 526 #endif /* _NET_ROUTE_H_ */ 527