Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/net/rtsock.c
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1 /*- 2 * Copyright (c) 1988, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95 30 * $FreeBSD: releng/9.1/sys/net/rtsock.c 235055 2012-05-05 11:33:48Z melifaro $ 31 */ 32 #include "opt_compat.h" 33 #include "opt_sctp.h" 34 #include "opt_mpath.h" 35 #include "opt_inet.h" 36 #include "opt_inet6.h" 37 38 #include <sys/param.h> 39 #include <sys/jail.h> 40 #include <sys/kernel.h> 41 #include <sys/domain.h> 42 #include <sys/lock.h> 43 #include <sys/malloc.h> 44 #include <sys/mbuf.h> 45 #include <sys/priv.h> 46 #include <sys/proc.h> 47 #include <sys/protosw.h> 48 #include <sys/rwlock.h> 49 #include <sys/signalvar.h> 50 #include <sys/socket.h> 51 #include <sys/socketvar.h> 52 #include <sys/sysctl.h> 53 #include <sys/systm.h> 54 55 #include <net/if.h> 56 #include <net/if_dl.h> 57 #include <net/if_llatbl.h> 58 #include <net/if_types.h> 59 #include <net/netisr.h> 60 #include <net/raw_cb.h> 61 #include <net/route.h> 62 #include <net/vnet.h> 63 64 #include <netinet/in.h> 65 #include <netinet/if_ether.h> 66 #ifdef INET6 67 #include <netinet6/scope6_var.h> 68 #endif 69 70 #if defined(INET) || defined(INET6) 71 #ifdef SCTP 72 extern void sctp_addr_change(struct ifaddr *ifa, int cmd); 73 #endif /* SCTP */ 74 #endif 75 76 #ifdef COMPAT_FREEBSD32 77 #include <sys/mount.h> 78 #include <compat/freebsd32/freebsd32.h> 79 80 struct if_data32 { 81 uint8_t ifi_type; 82 uint8_t ifi_physical; 83 uint8_t ifi_addrlen; 84 uint8_t ifi_hdrlen; 85 uint8_t ifi_link_state; 86 uint8_t ifi_spare_char1; 87 uint8_t ifi_spare_char2; 88 uint8_t ifi_datalen; 89 uint32_t ifi_mtu; 90 uint32_t ifi_metric; 91 uint32_t ifi_baudrate; 92 uint32_t ifi_ipackets; 93 uint32_t ifi_ierrors; 94 uint32_t ifi_opackets; 95 uint32_t ifi_oerrors; 96 uint32_t ifi_collisions; 97 uint32_t ifi_ibytes; 98 uint32_t ifi_obytes; 99 uint32_t ifi_imcasts; 100 uint32_t ifi_omcasts; 101 uint32_t ifi_iqdrops; 102 uint32_t ifi_noproto; 103 uint32_t ifi_hwassist; 104 int32_t ifi_epoch; 105 struct timeval32 ifi_lastchange; 106 }; 107 108 struct if_msghdr32 { 109 uint16_t ifm_msglen; 110 uint8_t ifm_version; 111 uint8_t ifm_type; 112 int32_t ifm_addrs; 113 int32_t ifm_flags; 114 uint16_t ifm_index; 115 struct if_data32 ifm_data; 116 }; 117 118 struct if_msghdrl32 { 119 uint16_t ifm_msglen; 120 uint8_t ifm_version; 121 uint8_t ifm_type; 122 int32_t ifm_addrs; 123 int32_t ifm_flags; 124 uint16_t ifm_index; 125 uint16_t _ifm_spare1; 126 uint16_t ifm_len; 127 uint16_t ifm_data_off; 128 struct if_data32 ifm_data; 129 }; 130 131 struct ifa_msghdrl32 { 132 uint16_t ifam_msglen; 133 uint8_t ifam_version; 134 uint8_t ifam_type; 135 int32_t ifam_addrs; 136 int32_t ifam_flags; 137 uint16_t ifam_index; 138 uint16_t _ifam_spare1; 139 uint16_t ifam_len; 140 uint16_t ifam_data_off; 141 int32_t ifam_metric; 142 struct if_data32 ifam_data; 143 }; 144 #endif /* COMPAT_FREEBSD32 */ 145 146 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); 147 148 /* NB: these are not modified */ 149 static struct sockaddr route_src = { 2, PF_ROUTE, }; 150 static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, }; 151 152 /* 153 * Used by rtsock/raw_input callback code to decide whether to filter the update 154 * notification to a socket bound to a particular FIB. 155 */ 156 #define RTS_FILTER_FIB M_PROTO8 157 #define RTS_ALLFIBS -1 158 159 static struct { 160 int ip_count; /* attached w/ AF_INET */ 161 int ip6_count; /* attached w/ AF_INET6 */ 162 int ipx_count; /* attached w/ AF_IPX */ 163 int any_count; /* total attached */ 164 } route_cb; 165 166 struct mtx rtsock_mtx; 167 MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF); 168 169 #define RTSOCK_LOCK() mtx_lock(&rtsock_mtx) 170 #define RTSOCK_UNLOCK() mtx_unlock(&rtsock_mtx) 171 #define RTSOCK_LOCK_ASSERT() mtx_assert(&rtsock_mtx, MA_OWNED) 172 173 SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, ""); 174 175 struct walkarg { 176 int w_tmemsize; 177 int w_op, w_arg; 178 caddr_t w_tmem; 179 struct sysctl_req *w_req; 180 }; 181 182 static void rts_input(struct mbuf *m); 183 static struct mbuf *rt_msg1(int type, struct rt_addrinfo *rtinfo); 184 static int rt_msg2(int type, struct rt_addrinfo *rtinfo, 185 caddr_t cp, struct walkarg *w); 186 static int rt_xaddrs(caddr_t cp, caddr_t cplim, 187 struct rt_addrinfo *rtinfo); 188 static int sysctl_dumpentry(struct radix_node *rn, void *vw); 189 static int sysctl_iflist(int af, struct walkarg *w); 190 static int sysctl_ifmalist(int af, struct walkarg *w); 191 static int route_output(struct mbuf *m, struct socket *so); 192 static void rt_setmetrics(u_long which, const struct rt_metrics *in, 193 struct rt_metrics_lite *out); 194 static void rt_getmetrics(const struct rt_metrics_lite *in, 195 struct rt_metrics *out); 196 static void rt_dispatch(struct mbuf *, sa_family_t); 197 198 static struct netisr_handler rtsock_nh = { 199 .nh_name = "rtsock", 200 .nh_handler = rts_input, 201 .nh_proto = NETISR_ROUTE, 202 .nh_policy = NETISR_POLICY_SOURCE, 203 }; 204 205 static int 206 sysctl_route_netisr_maxqlen(SYSCTL_HANDLER_ARGS) 207 { 208 int error, qlimit; 209 210 netisr_getqlimit(&rtsock_nh, &qlimit); 211 error = sysctl_handle_int(oidp, &qlimit, 0, req); 212 if (error || !req->newptr) 213 return (error); 214 if (qlimit < 1) 215 return (EINVAL); 216 return (netisr_setqlimit(&rtsock_nh, qlimit)); 217 } 218 SYSCTL_PROC(_net_route, OID_AUTO, netisr_maxqlen, CTLTYPE_INT|CTLFLAG_RW, 219 0, 0, sysctl_route_netisr_maxqlen, "I", 220 "maximum routing socket dispatch queue length"); 221 222 static void 223 rts_init(void) 224 { 225 int tmp; 226 227 if (TUNABLE_INT_FETCH("net.route.netisr_maxqlen", &tmp)) 228 rtsock_nh.nh_qlimit = tmp; 229 netisr_register(&rtsock_nh); 230 } 231 SYSINIT(rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, rts_init, 0); 232 233 static int 234 raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src, 235 struct rawcb *rp) 236 { 237 int fibnum; 238 239 KASSERT(m != NULL, ("%s: m is NULL", __func__)); 240 KASSERT(proto != NULL, ("%s: proto is NULL", __func__)); 241 KASSERT(rp != NULL, ("%s: rp is NULL", __func__)); 242 243 /* No filtering requested. */ 244 if ((m->m_flags & RTS_FILTER_FIB) == 0) 245 return (0); 246 247 /* Check if it is a rts and the fib matches the one of the socket. */ 248 fibnum = M_GETFIB(m); 249 if (proto->sp_family != PF_ROUTE || 250 rp->rcb_socket == NULL || 251 rp->rcb_socket->so_fibnum == fibnum) 252 return (0); 253 254 /* Filtering requested and no match, the socket shall be skipped. */ 255 return (1); 256 } 257 258 static void 259 rts_input(struct mbuf *m) 260 { 261 struct sockproto route_proto; 262 unsigned short *family; 263 struct m_tag *tag; 264 265 route_proto.sp_family = PF_ROUTE; 266 tag = m_tag_find(m, PACKET_TAG_RTSOCKFAM, NULL); 267 if (tag != NULL) { 268 family = (unsigned short *)(tag + 1); 269 route_proto.sp_protocol = *family; 270 m_tag_delete(m, tag); 271 } else 272 route_proto.sp_protocol = 0; 273 274 raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb); 275 } 276 277 /* 278 * It really doesn't make any sense at all for this code to share much 279 * with raw_usrreq.c, since its functionality is so restricted. XXX 280 */ 281 static void 282 rts_abort(struct socket *so) 283 { 284 285 raw_usrreqs.pru_abort(so); 286 } 287 288 static void 289 rts_close(struct socket *so) 290 { 291 292 raw_usrreqs.pru_close(so); 293 } 294 295 /* pru_accept is EOPNOTSUPP */ 296 297 static int 298 rts_attach(struct socket *so, int proto, struct thread *td) 299 { 300 struct rawcb *rp; 301 int s, error; 302 303 KASSERT(so->so_pcb == NULL, ("rts_attach: so_pcb != NULL")); 304 305 /* XXX */ 306 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO); 307 if (rp == NULL) 308 return ENOBUFS; 309 310 /* 311 * The splnet() is necessary to block protocols from sending 312 * error notifications (like RTM_REDIRECT or RTM_LOSING) while 313 * this PCB is extant but incompletely initialized. 314 * Probably we should try to do more of this work beforehand and 315 * eliminate the spl. 316 */ 317 s = splnet(); 318 so->so_pcb = (caddr_t)rp; 319 so->so_fibnum = td->td_proc->p_fibnum; 320 error = raw_attach(so, proto); 321 rp = sotorawcb(so); 322 if (error) { 323 splx(s); 324 so->so_pcb = NULL; 325 free(rp, M_PCB); 326 return error; 327 } 328 RTSOCK_LOCK(); 329 switch(rp->rcb_proto.sp_protocol) { 330 case AF_INET: 331 route_cb.ip_count++; 332 break; 333 case AF_INET6: 334 route_cb.ip6_count++; 335 break; 336 case AF_IPX: 337 route_cb.ipx_count++; 338 break; 339 } 340 route_cb.any_count++; 341 RTSOCK_UNLOCK(); 342 soisconnected(so); 343 so->so_options |= SO_USELOOPBACK; 344 splx(s); 345 return 0; 346 } 347 348 static int 349 rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 350 { 351 352 return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */ 353 } 354 355 static int 356 rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 357 { 358 359 return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */ 360 } 361 362 /* pru_connect2 is EOPNOTSUPP */ 363 /* pru_control is EOPNOTSUPP */ 364 365 static void 366 rts_detach(struct socket *so) 367 { 368 struct rawcb *rp = sotorawcb(so); 369 370 KASSERT(rp != NULL, ("rts_detach: rp == NULL")); 371 372 RTSOCK_LOCK(); 373 switch(rp->rcb_proto.sp_protocol) { 374 case AF_INET: 375 route_cb.ip_count--; 376 break; 377 case AF_INET6: 378 route_cb.ip6_count--; 379 break; 380 case AF_IPX: 381 route_cb.ipx_count--; 382 break; 383 } 384 route_cb.any_count--; 385 RTSOCK_UNLOCK(); 386 raw_usrreqs.pru_detach(so); 387 } 388 389 static int 390 rts_disconnect(struct socket *so) 391 { 392 393 return (raw_usrreqs.pru_disconnect(so)); 394 } 395 396 /* pru_listen is EOPNOTSUPP */ 397 398 static int 399 rts_peeraddr(struct socket *so, struct sockaddr **nam) 400 { 401 402 return (raw_usrreqs.pru_peeraddr(so, nam)); 403 } 404 405 /* pru_rcvd is EOPNOTSUPP */ 406 /* pru_rcvoob is EOPNOTSUPP */ 407 408 static int 409 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 410 struct mbuf *control, struct thread *td) 411 { 412 413 return (raw_usrreqs.pru_send(so, flags, m, nam, control, td)); 414 } 415 416 /* pru_sense is null */ 417 418 static int 419 rts_shutdown(struct socket *so) 420 { 421 422 return (raw_usrreqs.pru_shutdown(so)); 423 } 424 425 static int 426 rts_sockaddr(struct socket *so, struct sockaddr **nam) 427 { 428 429 return (raw_usrreqs.pru_sockaddr(so, nam)); 430 } 431 432 static struct pr_usrreqs route_usrreqs = { 433 .pru_abort = rts_abort, 434 .pru_attach = rts_attach, 435 .pru_bind = rts_bind, 436 .pru_connect = rts_connect, 437 .pru_detach = rts_detach, 438 .pru_disconnect = rts_disconnect, 439 .pru_peeraddr = rts_peeraddr, 440 .pru_send = rts_send, 441 .pru_shutdown = rts_shutdown, 442 .pru_sockaddr = rts_sockaddr, 443 .pru_close = rts_close, 444 }; 445 446 #ifndef _SOCKADDR_UNION_DEFINED 447 #define _SOCKADDR_UNION_DEFINED 448 /* 449 * The union of all possible address formats we handle. 450 */ 451 union sockaddr_union { 452 struct sockaddr sa; 453 struct sockaddr_in sin; 454 struct sockaddr_in6 sin6; 455 }; 456 #endif /* _SOCKADDR_UNION_DEFINED */ 457 458 static int 459 rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, 460 struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred) 461 { 462 463 /* First, see if the returned address is part of the jail. */ 464 if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) { 465 info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 466 return (0); 467 } 468 469 switch (info->rti_info[RTAX_DST]->sa_family) { 470 #ifdef INET 471 case AF_INET: 472 { 473 struct in_addr ia; 474 struct ifaddr *ifa; 475 int found; 476 477 found = 0; 478 /* 479 * Try to find an address on the given outgoing interface 480 * that belongs to the jail. 481 */ 482 IF_ADDR_RLOCK(ifp); 483 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 484 struct sockaddr *sa; 485 sa = ifa->ifa_addr; 486 if (sa->sa_family != AF_INET) 487 continue; 488 ia = ((struct sockaddr_in *)sa)->sin_addr; 489 if (prison_check_ip4(cred, &ia) == 0) { 490 found = 1; 491 break; 492 } 493 } 494 IF_ADDR_RUNLOCK(ifp); 495 if (!found) { 496 /* 497 * As a last resort return the 'default' jail address. 498 */ 499 ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)-> 500 sin_addr; 501 if (prison_get_ip4(cred, &ia) != 0) 502 return (ESRCH); 503 } 504 bzero(&saun->sin, sizeof(struct sockaddr_in)); 505 saun->sin.sin_len = sizeof(struct sockaddr_in); 506 saun->sin.sin_family = AF_INET; 507 saun->sin.sin_addr.s_addr = ia.s_addr; 508 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin; 509 break; 510 } 511 #endif 512 #ifdef INET6 513 case AF_INET6: 514 { 515 struct in6_addr ia6; 516 struct ifaddr *ifa; 517 int found; 518 519 found = 0; 520 /* 521 * Try to find an address on the given outgoing interface 522 * that belongs to the jail. 523 */ 524 IF_ADDR_RLOCK(ifp); 525 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 526 struct sockaddr *sa; 527 sa = ifa->ifa_addr; 528 if (sa->sa_family != AF_INET6) 529 continue; 530 bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, 531 &ia6, sizeof(struct in6_addr)); 532 if (prison_check_ip6(cred, &ia6) == 0) { 533 found = 1; 534 break; 535 } 536 } 537 IF_ADDR_RUNLOCK(ifp); 538 if (!found) { 539 /* 540 * As a last resort return the 'default' jail address. 541 */ 542 ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)-> 543 sin6_addr; 544 if (prison_get_ip6(cred, &ia6) != 0) 545 return (ESRCH); 546 } 547 bzero(&saun->sin6, sizeof(struct sockaddr_in6)); 548 saun->sin6.sin6_len = sizeof(struct sockaddr_in6); 549 saun->sin6.sin6_family = AF_INET6; 550 bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr)); 551 if (sa6_recoverscope(&saun->sin6) != 0) 552 return (ESRCH); 553 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6; 554 break; 555 } 556 #endif 557 default: 558 return (ESRCH); 559 } 560 return (0); 561 } 562 563 /*ARGSUSED*/ 564 static int 565 route_output(struct mbuf *m, struct socket *so) 566 { 567 #define sa_equal(a1, a2) (bcmp((a1), (a2), (a1)->sa_len) == 0) 568 struct rt_msghdr *rtm = NULL; 569 struct rtentry *rt = NULL; 570 struct radix_node_head *rnh; 571 struct rt_addrinfo info; 572 int len, error = 0; 573 struct ifnet *ifp = NULL; 574 union sockaddr_union saun; 575 sa_family_t saf = AF_UNSPEC; 576 577 #define senderr(e) { error = e; goto flush;} 578 if (m == NULL || ((m->m_len < sizeof(long)) && 579 (m = m_pullup(m, sizeof(long))) == NULL)) 580 return (ENOBUFS); 581 if ((m->m_flags & M_PKTHDR) == 0) 582 panic("route_output"); 583 len = m->m_pkthdr.len; 584 if (len < sizeof(*rtm) || 585 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 586 info.rti_info[RTAX_DST] = NULL; 587 senderr(EINVAL); 588 } 589 R_Malloc(rtm, struct rt_msghdr *, len); 590 if (rtm == NULL) { 591 info.rti_info[RTAX_DST] = NULL; 592 senderr(ENOBUFS); 593 } 594 m_copydata(m, 0, len, (caddr_t)rtm); 595 if (rtm->rtm_version != RTM_VERSION) { 596 info.rti_info[RTAX_DST] = NULL; 597 senderr(EPROTONOSUPPORT); 598 } 599 rtm->rtm_pid = curproc->p_pid; 600 bzero(&info, sizeof(info)); 601 info.rti_addrs = rtm->rtm_addrs; 602 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) { 603 info.rti_info[RTAX_DST] = NULL; 604 senderr(EINVAL); 605 } 606 info.rti_flags = rtm->rtm_flags; 607 if (info.rti_info[RTAX_DST] == NULL || 608 info.rti_info[RTAX_DST]->sa_family >= AF_MAX || 609 (info.rti_info[RTAX_GATEWAY] != NULL && 610 info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) 611 senderr(EINVAL); 612 saf = info.rti_info[RTAX_DST]->sa_family; 613 /* 614 * Verify that the caller has the appropriate privilege; RTM_GET 615 * is the only operation the non-superuser is allowed. 616 */ 617 if (rtm->rtm_type != RTM_GET) { 618 error = priv_check(curthread, PRIV_NET_ROUTE); 619 if (error) 620 senderr(error); 621 } 622 623 /* 624 * The given gateway address may be an interface address. 625 * For example, issuing a "route change" command on a route 626 * entry that was created from a tunnel, and the gateway 627 * address given is the local end point. In this case the 628 * RTF_GATEWAY flag must be cleared or the destination will 629 * not be reachable even though there is no error message. 630 */ 631 if (info.rti_info[RTAX_GATEWAY] != NULL && 632 info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) { 633 struct route gw_ro; 634 635 bzero(&gw_ro, sizeof(gw_ro)); 636 gw_ro.ro_dst = *info.rti_info[RTAX_GATEWAY]; 637 rtalloc_ign_fib(&gw_ro, 0, so->so_fibnum); 638 /* 639 * A host route through the loopback interface is 640 * installed for each interface adddress. In pre 8.0 641 * releases the interface address of a PPP link type 642 * is not reachable locally. This behavior is fixed as 643 * part of the new L2/L3 redesign and rewrite work. The 644 * signature of this interface address route is the 645 * AF_LINK sa_family type of the rt_gateway, and the 646 * rt_ifp has the IFF_LOOPBACK flag set. 647 */ 648 if (gw_ro.ro_rt != NULL && 649 gw_ro.ro_rt->rt_gateway->sa_family == AF_LINK && 650 gw_ro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) 651 info.rti_flags &= ~RTF_GATEWAY; 652 if (gw_ro.ro_rt != NULL) 653 RTFREE(gw_ro.ro_rt); 654 } 655 656 switch (rtm->rtm_type) { 657 struct rtentry *saved_nrt; 658 659 case RTM_ADD: 660 if (info.rti_info[RTAX_GATEWAY] == NULL) 661 senderr(EINVAL); 662 saved_nrt = NULL; 663 664 /* support for new ARP code */ 665 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK && 666 (rtm->rtm_flags & RTF_LLDATA) != 0) { 667 error = lla_rt_output(rtm, &info); 668 break; 669 } 670 error = rtrequest1_fib(RTM_ADD, &info, &saved_nrt, 671 so->so_fibnum); 672 if (error == 0 && saved_nrt) { 673 RT_LOCK(saved_nrt); 674 rt_setmetrics(rtm->rtm_inits, 675 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 676 rtm->rtm_index = saved_nrt->rt_ifp->if_index; 677 RT_REMREF(saved_nrt); 678 RT_UNLOCK(saved_nrt); 679 } 680 break; 681 682 case RTM_DELETE: 683 saved_nrt = NULL; 684 /* support for new ARP code */ 685 if (info.rti_info[RTAX_GATEWAY] && 686 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 687 (rtm->rtm_flags & RTF_LLDATA) != 0) { 688 error = lla_rt_output(rtm, &info); 689 break; 690 } 691 error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, 692 so->so_fibnum); 693 if (error == 0) { 694 RT_LOCK(saved_nrt); 695 rt = saved_nrt; 696 goto report; 697 } 698 break; 699 700 case RTM_GET: 701 case RTM_CHANGE: 702 case RTM_LOCK: 703 rnh = rt_tables_get_rnh(so->so_fibnum, 704 info.rti_info[RTAX_DST]->sa_family); 705 if (rnh == NULL) 706 senderr(EAFNOSUPPORT); 707 RADIX_NODE_HEAD_RLOCK(rnh); 708 rt = (struct rtentry *) rnh->rnh_lookup(info.rti_info[RTAX_DST], 709 info.rti_info[RTAX_NETMASK], rnh); 710 if (rt == NULL) { /* XXX looks bogus */ 711 RADIX_NODE_HEAD_RUNLOCK(rnh); 712 senderr(ESRCH); 713 } 714 #ifdef RADIX_MPATH 715 /* 716 * for RTM_CHANGE/LOCK, if we got multipath routes, 717 * we require users to specify a matching RTAX_GATEWAY. 718 * 719 * for RTM_GET, gate is optional even with multipath. 720 * if gate == NULL the first match is returned. 721 * (no need to call rt_mpath_matchgate if gate == NULL) 722 */ 723 if (rn_mpath_capable(rnh) && 724 (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) { 725 rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]); 726 if (!rt) { 727 RADIX_NODE_HEAD_RUNLOCK(rnh); 728 senderr(ESRCH); 729 } 730 } 731 #endif 732 /* 733 * If performing proxied L2 entry insertion, and 734 * the actual PPP host entry is found, perform 735 * another search to retrieve the prefix route of 736 * the local end point of the PPP link. 737 */ 738 if (rtm->rtm_flags & RTF_ANNOUNCE) { 739 struct sockaddr laddr; 740 741 if (rt->rt_ifp != NULL && 742 rt->rt_ifp->if_type == IFT_PROPVIRTUAL) { 743 struct ifaddr *ifa; 744 745 ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1); 746 if (ifa != NULL) 747 rt_maskedcopy(ifa->ifa_addr, 748 &laddr, 749 ifa->ifa_netmask); 750 } else 751 rt_maskedcopy(rt->rt_ifa->ifa_addr, 752 &laddr, 753 rt->rt_ifa->ifa_netmask); 754 /* 755 * refactor rt and no lock operation necessary 756 */ 757 rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr, rnh); 758 if (rt == NULL) { 759 RADIX_NODE_HEAD_RUNLOCK(rnh); 760 senderr(ESRCH); 761 } 762 } 763 RT_LOCK(rt); 764 RT_ADDREF(rt); 765 RADIX_NODE_HEAD_RUNLOCK(rnh); 766 767 /* 768 * Fix for PR: 82974 769 * 770 * RTM_CHANGE/LOCK need a perfect match, rn_lookup() 771 * returns a perfect match in case a netmask is 772 * specified. For host routes only a longest prefix 773 * match is returned so it is necessary to compare the 774 * existence of the netmask. If both have a netmask 775 * rnh_lookup() did a perfect match and if none of them 776 * have a netmask both are host routes which is also a 777 * perfect match. 778 */ 779 780 if (rtm->rtm_type != RTM_GET && 781 (!rt_mask(rt) != !info.rti_info[RTAX_NETMASK])) { 782 RT_UNLOCK(rt); 783 senderr(ESRCH); 784 } 785 786 switch(rtm->rtm_type) { 787 788 case RTM_GET: 789 report: 790 RT_LOCK_ASSERT(rt); 791 if ((rt->rt_flags & RTF_HOST) == 0 792 ? jailed_without_vnet(curthread->td_ucred) 793 : prison_if(curthread->td_ucred, 794 rt_key(rt)) != 0) { 795 RT_UNLOCK(rt); 796 senderr(ESRCH); 797 } 798 info.rti_info[RTAX_DST] = rt_key(rt); 799 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 800 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 801 info.rti_info[RTAX_GENMASK] = 0; 802 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 803 ifp = rt->rt_ifp; 804 if (ifp) { 805 info.rti_info[RTAX_IFP] = 806 ifp->if_addr->ifa_addr; 807 error = rtm_get_jailed(&info, ifp, rt, 808 &saun, curthread->td_ucred); 809 if (error != 0) { 810 RT_UNLOCK(rt); 811 senderr(error); 812 } 813 if (ifp->if_flags & IFF_POINTOPOINT) 814 info.rti_info[RTAX_BRD] = 815 rt->rt_ifa->ifa_dstaddr; 816 rtm->rtm_index = ifp->if_index; 817 } else { 818 info.rti_info[RTAX_IFP] = NULL; 819 info.rti_info[RTAX_IFA] = NULL; 820 } 821 } else if ((ifp = rt->rt_ifp) != NULL) { 822 rtm->rtm_index = ifp->if_index; 823 } 824 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL); 825 if (len > rtm->rtm_msglen) { 826 struct rt_msghdr *new_rtm; 827 R_Malloc(new_rtm, struct rt_msghdr *, len); 828 if (new_rtm == NULL) { 829 RT_UNLOCK(rt); 830 senderr(ENOBUFS); 831 } 832 bcopy(rtm, new_rtm, rtm->rtm_msglen); 833 Free(rtm); rtm = new_rtm; 834 } 835 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL); 836 rtm->rtm_flags = rt->rt_flags; 837 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 838 rtm->rtm_addrs = info.rti_addrs; 839 break; 840 841 case RTM_CHANGE: 842 /* 843 * New gateway could require new ifaddr, ifp; 844 * flags may also be different; ifp may be specified 845 * by ll sockaddr when protocol address is ambiguous 846 */ 847 if (((rt->rt_flags & RTF_GATEWAY) && 848 info.rti_info[RTAX_GATEWAY] != NULL) || 849 info.rti_info[RTAX_IFP] != NULL || 850 (info.rti_info[RTAX_IFA] != NULL && 851 !sa_equal(info.rti_info[RTAX_IFA], 852 rt->rt_ifa->ifa_addr))) { 853 RT_UNLOCK(rt); 854 RADIX_NODE_HEAD_LOCK(rnh); 855 error = rt_getifa_fib(&info, rt->rt_fibnum); 856 /* 857 * XXXRW: Really we should release this 858 * reference later, but this maintains 859 * historical behavior. 860 */ 861 if (info.rti_ifa != NULL) 862 ifa_free(info.rti_ifa); 863 RADIX_NODE_HEAD_UNLOCK(rnh); 864 if (error != 0) 865 senderr(error); 866 RT_LOCK(rt); 867 } 868 if (info.rti_ifa != NULL && 869 info.rti_ifa != rt->rt_ifa && 870 rt->rt_ifa != NULL && 871 rt->rt_ifa->ifa_rtrequest != NULL) { 872 rt->rt_ifa->ifa_rtrequest(RTM_DELETE, rt, 873 &info); 874 ifa_free(rt->rt_ifa); 875 } 876 if (info.rti_info[RTAX_GATEWAY] != NULL) { 877 RT_UNLOCK(rt); 878 RADIX_NODE_HEAD_LOCK(rnh); 879 RT_LOCK(rt); 880 881 error = rt_setgate(rt, rt_key(rt), 882 info.rti_info[RTAX_GATEWAY]); 883 RADIX_NODE_HEAD_UNLOCK(rnh); 884 if (error != 0) { 885 RT_UNLOCK(rt); 886 senderr(error); 887 } 888 rt->rt_flags |= (RTF_GATEWAY & info.rti_flags); 889 } 890 if (info.rti_ifa != NULL && 891 info.rti_ifa != rt->rt_ifa) { 892 ifa_ref(info.rti_ifa); 893 rt->rt_ifa = info.rti_ifa; 894 rt->rt_ifp = info.rti_ifp; 895 } 896 /* Allow some flags to be toggled on change. */ 897 rt->rt_flags = (rt->rt_flags & ~RTF_FMASK) | 898 (rtm->rtm_flags & RTF_FMASK); 899 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 900 &rt->rt_rmx); 901 rtm->rtm_index = rt->rt_ifp->if_index; 902 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 903 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 904 /* FALLTHROUGH */ 905 case RTM_LOCK: 906 /* We don't support locks anymore */ 907 break; 908 } 909 RT_UNLOCK(rt); 910 break; 911 912 default: 913 senderr(EOPNOTSUPP); 914 } 915 916 flush: 917 if (rtm) { 918 if (error) 919 rtm->rtm_errno = error; 920 else 921 rtm->rtm_flags |= RTF_DONE; 922 } 923 if (rt) /* XXX can this be true? */ 924 RTFREE(rt); 925 { 926 struct rawcb *rp = NULL; 927 /* 928 * Check to see if we don't want our own messages. 929 */ 930 if ((so->so_options & SO_USELOOPBACK) == 0) { 931 if (route_cb.any_count <= 1) { 932 if (rtm) 933 Free(rtm); 934 m_freem(m); 935 return (error); 936 } 937 /* There is another listener, so construct message */ 938 rp = sotorawcb(so); 939 } 940 if (rtm) { 941 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 942 if (m->m_pkthdr.len < rtm->rtm_msglen) { 943 m_freem(m); 944 m = NULL; 945 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 946 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 947 } 948 if (m) { 949 M_SETFIB(m, so->so_fibnum); 950 m->m_flags |= RTS_FILTER_FIB; 951 if (rp) { 952 /* 953 * XXX insure we don't get a copy by 954 * invalidating our protocol 955 */ 956 unsigned short family = rp->rcb_proto.sp_family; 957 rp->rcb_proto.sp_family = 0; 958 rt_dispatch(m, saf); 959 rp->rcb_proto.sp_family = family; 960 } else 961 rt_dispatch(m, saf); 962 } 963 /* info.rti_info[RTAX_DST] (used above) can point inside of rtm */ 964 if (rtm) 965 Free(rtm); 966 } 967 return (error); 968 #undef sa_equal 969 } 970 971 static void 972 rt_setmetrics(u_long which, const struct rt_metrics *in, 973 struct rt_metrics_lite *out) 974 { 975 #define metric(f, e) if (which & (f)) out->e = in->e; 976 /* 977 * Only these are stored in the routing entry since introduction 978 * of tcp hostcache. The rest is ignored. 979 */ 980 metric(RTV_MTU, rmx_mtu); 981 metric(RTV_WEIGHT, rmx_weight); 982 /* Userland -> kernel timebase conversion. */ 983 if (which & RTV_EXPIRE) 984 out->rmx_expire = in->rmx_expire ? 985 in->rmx_expire - time_second + time_uptime : 0; 986 #undef metric 987 } 988 989 static void 990 rt_getmetrics(const struct rt_metrics_lite *in, struct rt_metrics *out) 991 { 992 #define metric(e) out->e = in->e; 993 bzero(out, sizeof(*out)); 994 metric(rmx_mtu); 995 metric(rmx_weight); 996 /* Kernel -> userland timebase conversion. */ 997 out->rmx_expire = in->rmx_expire ? 998 in->rmx_expire - time_uptime + time_second : 0; 999 #undef metric 1000 } 1001 1002 /* 1003 * Extract the addresses of the passed sockaddrs. 1004 * Do a little sanity checking so as to avoid bad memory references. 1005 * This data is derived straight from userland. 1006 */ 1007 static int 1008 rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) 1009 { 1010 struct sockaddr *sa; 1011 int i; 1012 1013 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 1014 if ((rtinfo->rti_addrs & (1 << i)) == 0) 1015 continue; 1016 sa = (struct sockaddr *)cp; 1017 /* 1018 * It won't fit. 1019 */ 1020 if (cp + sa->sa_len > cplim) 1021 return (EINVAL); 1022 /* 1023 * there are no more.. quit now 1024 * If there are more bits, they are in error. 1025 * I've seen this. route(1) can evidently generate these. 1026 * This causes kernel to core dump. 1027 * for compatibility, If we see this, point to a safe address. 1028 */ 1029 if (sa->sa_len == 0) { 1030 rtinfo->rti_info[i] = &sa_zero; 1031 return (0); /* should be EINVAL but for compat */ 1032 } 1033 /* accept it */ 1034 rtinfo->rti_info[i] = sa; 1035 cp += SA_SIZE(sa); 1036 } 1037 return (0); 1038 } 1039 1040 /* 1041 * Used by the routing socket. 1042 */ 1043 static struct mbuf * 1044 rt_msg1(int type, struct rt_addrinfo *rtinfo) 1045 { 1046 struct rt_msghdr *rtm; 1047 struct mbuf *m; 1048 int i; 1049 struct sockaddr *sa; 1050 int len, dlen; 1051 1052 switch (type) { 1053 1054 case RTM_DELADDR: 1055 case RTM_NEWADDR: 1056 len = sizeof(struct ifa_msghdr); 1057 break; 1058 1059 case RTM_DELMADDR: 1060 case RTM_NEWMADDR: 1061 len = sizeof(struct ifma_msghdr); 1062 break; 1063 1064 case RTM_IFINFO: 1065 len = sizeof(struct if_msghdr); 1066 break; 1067 1068 case RTM_IFANNOUNCE: 1069 case RTM_IEEE80211: 1070 len = sizeof(struct if_announcemsghdr); 1071 break; 1072 1073 default: 1074 len = sizeof(struct rt_msghdr); 1075 } 1076 if (len > MCLBYTES) 1077 panic("rt_msg1"); 1078 m = m_gethdr(M_DONTWAIT, MT_DATA); 1079 if (m && len > MHLEN) { 1080 MCLGET(m, M_DONTWAIT); 1081 if ((m->m_flags & M_EXT) == 0) { 1082 m_free(m); 1083 m = NULL; 1084 } 1085 } 1086 if (m == NULL) 1087 return (m); 1088 m->m_pkthdr.len = m->m_len = len; 1089 m->m_pkthdr.rcvif = NULL; 1090 rtm = mtod(m, struct rt_msghdr *); 1091 bzero((caddr_t)rtm, len); 1092 for (i = 0; i < RTAX_MAX; i++) { 1093 if ((sa = rtinfo->rti_info[i]) == NULL) 1094 continue; 1095 rtinfo->rti_addrs |= (1 << i); 1096 dlen = SA_SIZE(sa); 1097 m_copyback(m, len, dlen, (caddr_t)sa); 1098 len += dlen; 1099 } 1100 if (m->m_pkthdr.len != len) { 1101 m_freem(m); 1102 return (NULL); 1103 } 1104 rtm->rtm_msglen = len; 1105 rtm->rtm_version = RTM_VERSION; 1106 rtm->rtm_type = type; 1107 return (m); 1108 } 1109 1110 /* 1111 * Used by the sysctl code and routing socket. 1112 */ 1113 static int 1114 rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w) 1115 { 1116 int i; 1117 int len, dlen, second_time = 0; 1118 caddr_t cp0; 1119 1120 rtinfo->rti_addrs = 0; 1121 again: 1122 switch (type) { 1123 1124 case RTM_DELADDR: 1125 case RTM_NEWADDR: 1126 if (w != NULL && w->w_op == NET_RT_IFLISTL) { 1127 #ifdef COMPAT_FREEBSD32 1128 if (w->w_req->flags & SCTL_MASK32) 1129 len = sizeof(struct ifa_msghdrl32); 1130 else 1131 #endif 1132 len = sizeof(struct ifa_msghdrl); 1133 } else 1134 len = sizeof(struct ifa_msghdr); 1135 break; 1136 1137 case RTM_IFINFO: 1138 #ifdef COMPAT_FREEBSD32 1139 if (w != NULL && w->w_req->flags & SCTL_MASK32) { 1140 if (w->w_op == NET_RT_IFLISTL) 1141 len = sizeof(struct if_msghdrl32); 1142 else 1143 len = sizeof(struct if_msghdr32); 1144 break; 1145 } 1146 #endif 1147 if (w != NULL && w->w_op == NET_RT_IFLISTL) 1148 len = sizeof(struct if_msghdrl); 1149 else 1150 len = sizeof(struct if_msghdr); 1151 break; 1152 1153 case RTM_NEWMADDR: 1154 len = sizeof(struct ifma_msghdr); 1155 break; 1156 1157 default: 1158 len = sizeof(struct rt_msghdr); 1159 } 1160 cp0 = cp; 1161 if (cp0) 1162 cp += len; 1163 for (i = 0; i < RTAX_MAX; i++) { 1164 struct sockaddr *sa; 1165 1166 if ((sa = rtinfo->rti_info[i]) == NULL) 1167 continue; 1168 rtinfo->rti_addrs |= (1 << i); 1169 dlen = SA_SIZE(sa); 1170 if (cp) { 1171 bcopy((caddr_t)sa, cp, (unsigned)dlen); 1172 cp += dlen; 1173 } 1174 len += dlen; 1175 } 1176 len = ALIGN(len); 1177 if (cp == NULL && w != NULL && !second_time) { 1178 struct walkarg *rw = w; 1179 1180 if (rw->w_req) { 1181 if (rw->w_tmemsize < len) { 1182 if (rw->w_tmem) 1183 free(rw->w_tmem, M_RTABLE); 1184 rw->w_tmem = (caddr_t) 1185 malloc(len, M_RTABLE, M_NOWAIT); 1186 if (rw->w_tmem) 1187 rw->w_tmemsize = len; 1188 } 1189 if (rw->w_tmem) { 1190 cp = rw->w_tmem; 1191 second_time = 1; 1192 goto again; 1193 } 1194 } 1195 } 1196 if (cp) { 1197 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 1198 1199 rtm->rtm_version = RTM_VERSION; 1200 rtm->rtm_type = type; 1201 rtm->rtm_msglen = len; 1202 } 1203 return (len); 1204 } 1205 1206 /* 1207 * This routine is called to generate a message from the routing 1208 * socket indicating that a redirect has occured, a routing lookup 1209 * has failed, or that a protocol has detected timeouts to a particular 1210 * destination. 1211 */ 1212 void 1213 rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, 1214 int fibnum) 1215 { 1216 struct rt_msghdr *rtm; 1217 struct mbuf *m; 1218 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1219 1220 if (route_cb.any_count == 0) 1221 return; 1222 m = rt_msg1(type, rtinfo); 1223 if (m == NULL) 1224 return; 1225 1226 if (fibnum != RTS_ALLFIBS) { 1227 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " 1228 "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); 1229 M_SETFIB(m, fibnum); 1230 m->m_flags |= RTS_FILTER_FIB; 1231 } 1232 1233 rtm = mtod(m, struct rt_msghdr *); 1234 rtm->rtm_flags = RTF_DONE | flags; 1235 rtm->rtm_errno = error; 1236 rtm->rtm_addrs = rtinfo->rti_addrs; 1237 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1238 } 1239 1240 void 1241 rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 1242 { 1243 1244 rt_missmsg_fib(type, rtinfo, flags, error, RTS_ALLFIBS); 1245 } 1246 1247 /* 1248 * This routine is called to generate a message from the routing 1249 * socket indicating that the status of a network interface has changed. 1250 */ 1251 void 1252 rt_ifmsg(struct ifnet *ifp) 1253 { 1254 struct if_msghdr *ifm; 1255 struct mbuf *m; 1256 struct rt_addrinfo info; 1257 1258 if (route_cb.any_count == 0) 1259 return; 1260 bzero((caddr_t)&info, sizeof(info)); 1261 m = rt_msg1(RTM_IFINFO, &info); 1262 if (m == NULL) 1263 return; 1264 ifm = mtod(m, struct if_msghdr *); 1265 ifm->ifm_index = ifp->if_index; 1266 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1267 ifm->ifm_data = ifp->if_data; 1268 ifm->ifm_addrs = 0; 1269 rt_dispatch(m, AF_UNSPEC); 1270 } 1271 1272 /* 1273 * This is called to generate messages from the routing socket 1274 * indicating a network interface has had addresses associated with it. 1275 * if we ever reverse the logic and replace messages TO the routing 1276 * socket indicate a request to configure interfaces, then it will 1277 * be unnecessary as the routing socket will automatically generate 1278 * copies of it. 1279 */ 1280 void 1281 rt_newaddrmsg_fib(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt, 1282 int fibnum) 1283 { 1284 struct rt_addrinfo info; 1285 struct sockaddr *sa = NULL; 1286 int pass; 1287 struct mbuf *m = NULL; 1288 struct ifnet *ifp = ifa->ifa_ifp; 1289 1290 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 1291 ("unexpected cmd %u", cmd)); 1292 #if defined(INET) || defined(INET6) 1293 #ifdef SCTP 1294 /* 1295 * notify the SCTP stack 1296 * this will only get called when an address is added/deleted 1297 * XXX pass the ifaddr struct instead if ifa->ifa_addr... 1298 */ 1299 sctp_addr_change(ifa, cmd); 1300 #endif /* SCTP */ 1301 #endif 1302 if (route_cb.any_count == 0) 1303 return; 1304 for (pass = 1; pass < 3; pass++) { 1305 bzero((caddr_t)&info, sizeof(info)); 1306 if ((cmd == RTM_ADD && pass == 1) || 1307 (cmd == RTM_DELETE && pass == 2)) { 1308 struct ifa_msghdr *ifam; 1309 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 1310 1311 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1312 info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; 1313 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1314 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1315 if ((m = rt_msg1(ncmd, &info)) == NULL) 1316 continue; 1317 ifam = mtod(m, struct ifa_msghdr *); 1318 ifam->ifam_index = ifp->if_index; 1319 ifam->ifam_metric = ifa->ifa_metric; 1320 ifam->ifam_flags = ifa->ifa_flags; 1321 ifam->ifam_addrs = info.rti_addrs; 1322 } 1323 if ((cmd == RTM_ADD && pass == 2) || 1324 (cmd == RTM_DELETE && pass == 1)) { 1325 struct rt_msghdr *rtm; 1326 1327 if (rt == NULL) 1328 continue; 1329 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1330 info.rti_info[RTAX_DST] = sa = rt_key(rt); 1331 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1332 if ((m = rt_msg1(cmd, &info)) == NULL) 1333 continue; 1334 rtm = mtod(m, struct rt_msghdr *); 1335 rtm->rtm_index = ifp->if_index; 1336 rtm->rtm_flags |= rt->rt_flags; 1337 rtm->rtm_errno = error; 1338 rtm->rtm_addrs = info.rti_addrs; 1339 } 1340 if (fibnum != RTS_ALLFIBS) { 1341 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: " 1342 "fibnum out of range 0 <= %d < %d", __func__, 1343 fibnum, rt_numfibs)); 1344 M_SETFIB(m, fibnum); 1345 m->m_flags |= RTS_FILTER_FIB; 1346 } 1347 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1348 } 1349 } 1350 1351 void 1352 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) 1353 { 1354 1355 rt_newaddrmsg_fib(cmd, ifa, error, rt, RTS_ALLFIBS); 1356 } 1357 1358 /* 1359 * This is the analogue to the rt_newaddrmsg which performs the same 1360 * function but for multicast group memberhips. This is easier since 1361 * there is no route state to worry about. 1362 */ 1363 void 1364 rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) 1365 { 1366 struct rt_addrinfo info; 1367 struct mbuf *m = NULL; 1368 struct ifnet *ifp = ifma->ifma_ifp; 1369 struct ifma_msghdr *ifmam; 1370 1371 if (route_cb.any_count == 0) 1372 return; 1373 1374 bzero((caddr_t)&info, sizeof(info)); 1375 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1376 info.rti_info[RTAX_IFP] = ifp ? ifp->if_addr->ifa_addr : NULL; 1377 /* 1378 * If a link-layer address is present, present it as a ``gateway'' 1379 * (similarly to how ARP entries, e.g., are presented). 1380 */ 1381 info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr; 1382 m = rt_msg1(cmd, &info); 1383 if (m == NULL) 1384 return; 1385 ifmam = mtod(m, struct ifma_msghdr *); 1386 KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n", 1387 __func__)); 1388 ifmam->ifmam_index = ifp->if_index; 1389 ifmam->ifmam_addrs = info.rti_addrs; 1390 rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); 1391 } 1392 1393 static struct mbuf * 1394 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1395 struct rt_addrinfo *info) 1396 { 1397 struct if_announcemsghdr *ifan; 1398 struct mbuf *m; 1399 1400 if (route_cb.any_count == 0) 1401 return NULL; 1402 bzero((caddr_t)info, sizeof(*info)); 1403 m = rt_msg1(type, info); 1404 if (m != NULL) { 1405 ifan = mtod(m, struct if_announcemsghdr *); 1406 ifan->ifan_index = ifp->if_index; 1407 strlcpy(ifan->ifan_name, ifp->if_xname, 1408 sizeof(ifan->ifan_name)); 1409 ifan->ifan_what = what; 1410 } 1411 return m; 1412 } 1413 1414 /* 1415 * This is called to generate routing socket messages indicating 1416 * IEEE80211 wireless events. 1417 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1418 */ 1419 void 1420 rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 1421 { 1422 struct mbuf *m; 1423 struct rt_addrinfo info; 1424 1425 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1426 if (m != NULL) { 1427 /* 1428 * Append the ieee80211 data. Try to stick it in the 1429 * mbuf containing the ifannounce msg; otherwise allocate 1430 * a new mbuf and append. 1431 * 1432 * NB: we assume m is a single mbuf. 1433 */ 1434 if (data_len > M_TRAILINGSPACE(m)) { 1435 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1436 if (n == NULL) { 1437 m_freem(m); 1438 return; 1439 } 1440 bcopy(data, mtod(n, void *), data_len); 1441 n->m_len = data_len; 1442 m->m_next = n; 1443 } else if (data_len > 0) { 1444 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len); 1445 m->m_len += data_len; 1446 } 1447 if (m->m_flags & M_PKTHDR) 1448 m->m_pkthdr.len += data_len; 1449 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 1450 rt_dispatch(m, AF_UNSPEC); 1451 } 1452 } 1453 1454 /* 1455 * This is called to generate routing socket messages indicating 1456 * network interface arrival and departure. 1457 */ 1458 void 1459 rt_ifannouncemsg(struct ifnet *ifp, int what) 1460 { 1461 struct mbuf *m; 1462 struct rt_addrinfo info; 1463 1464 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1465 if (m != NULL) 1466 rt_dispatch(m, AF_UNSPEC); 1467 } 1468 1469 static void 1470 rt_dispatch(struct mbuf *m, sa_family_t saf) 1471 { 1472 struct m_tag *tag; 1473 1474 /* 1475 * Preserve the family from the sockaddr, if any, in an m_tag for 1476 * use when injecting the mbuf into the routing socket buffer from 1477 * the netisr. 1478 */ 1479 if (saf != AF_UNSPEC) { 1480 tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), 1481 M_NOWAIT); 1482 if (tag == NULL) { 1483 m_freem(m); 1484 return; 1485 } 1486 *(unsigned short *)(tag + 1) = saf; 1487 m_tag_prepend(m, tag); 1488 } 1489 #ifdef VIMAGE 1490 if (V_loif) 1491 m->m_pkthdr.rcvif = V_loif; 1492 else { 1493 m_freem(m); 1494 return; 1495 } 1496 #endif 1497 netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */ 1498 } 1499 1500 /* 1501 * This is used in dumping the kernel table via sysctl(). 1502 */ 1503 static int 1504 sysctl_dumpentry(struct radix_node *rn, void *vw) 1505 { 1506 struct walkarg *w = vw; 1507 struct rtentry *rt = (struct rtentry *)rn; 1508 int error = 0, size; 1509 struct rt_addrinfo info; 1510 1511 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1512 return 0; 1513 if ((rt->rt_flags & RTF_HOST) == 0 1514 ? jailed_without_vnet(w->w_req->td->td_ucred) 1515 : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0) 1516 return (0); 1517 bzero((caddr_t)&info, sizeof(info)); 1518 info.rti_info[RTAX_DST] = rt_key(rt); 1519 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1520 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1521 info.rti_info[RTAX_GENMASK] = 0; 1522 if (rt->rt_ifp) { 1523 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; 1524 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 1525 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1526 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; 1527 } 1528 size = rt_msg2(RTM_GET, &info, NULL, w); 1529 if (w->w_req && w->w_tmem) { 1530 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 1531 1532 rtm->rtm_flags = rt->rt_flags; 1533 /* 1534 * let's be honest about this being a retarded hack 1535 */ 1536 rtm->rtm_fmask = rt->rt_rmx.rmx_pksent; 1537 rt_getmetrics(&rt->rt_rmx, &rtm->rtm_rmx); 1538 rtm->rtm_index = rt->rt_ifp->if_index; 1539 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1540 rtm->rtm_addrs = info.rti_addrs; 1541 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size); 1542 return (error); 1543 } 1544 return (error); 1545 } 1546 1547 #ifdef COMPAT_FREEBSD32 1548 static void 1549 copy_ifdata32(struct if_data *src, struct if_data32 *dst) 1550 { 1551 1552 bzero(dst, sizeof(*dst)); 1553 CP(*src, *dst, ifi_type); 1554 CP(*src, *dst, ifi_physical); 1555 CP(*src, *dst, ifi_addrlen); 1556 CP(*src, *dst, ifi_hdrlen); 1557 CP(*src, *dst, ifi_link_state); 1558 dst->ifi_datalen = sizeof(struct if_data32); 1559 CP(*src, *dst, ifi_mtu); 1560 CP(*src, *dst, ifi_metric); 1561 CP(*src, *dst, ifi_baudrate); 1562 CP(*src, *dst, ifi_ipackets); 1563 CP(*src, *dst, ifi_ierrors); 1564 CP(*src, *dst, ifi_opackets); 1565 CP(*src, *dst, ifi_oerrors); 1566 CP(*src, *dst, ifi_collisions); 1567 CP(*src, *dst, ifi_ibytes); 1568 CP(*src, *dst, ifi_obytes); 1569 CP(*src, *dst, ifi_imcasts); 1570 CP(*src, *dst, ifi_omcasts); 1571 CP(*src, *dst, ifi_iqdrops); 1572 CP(*src, *dst, ifi_noproto); 1573 CP(*src, *dst, ifi_hwassist); 1574 CP(*src, *dst, ifi_epoch); 1575 TV_CP(*src, *dst, ifi_lastchange); 1576 } 1577 #endif 1578 1579 static int 1580 sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info, 1581 struct walkarg *w, int len) 1582 { 1583 struct if_msghdrl *ifm; 1584 1585 #ifdef COMPAT_FREEBSD32 1586 if (w->w_req->flags & SCTL_MASK32) { 1587 struct if_msghdrl32 *ifm32; 1588 1589 ifm32 = (struct if_msghdrl32 *)w->w_tmem; 1590 ifm32->ifm_addrs = info->rti_addrs; 1591 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1592 ifm32->ifm_index = ifp->if_index; 1593 ifm32->_ifm_spare1 = 0; 1594 ifm32->ifm_len = sizeof(*ifm32); 1595 ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); 1596 1597 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1598 1599 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1600 } 1601 #endif 1602 ifm = (struct if_msghdrl *)w->w_tmem; 1603 ifm->ifm_addrs = info->rti_addrs; 1604 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1605 ifm->ifm_index = ifp->if_index; 1606 ifm->_ifm_spare1 = 0; 1607 ifm->ifm_len = sizeof(*ifm); 1608 ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); 1609 1610 ifm->ifm_data = ifp->if_data; 1611 1612 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1613 } 1614 1615 static int 1616 sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info, 1617 struct walkarg *w, int len) 1618 { 1619 struct if_msghdr *ifm; 1620 1621 #ifdef COMPAT_FREEBSD32 1622 if (w->w_req->flags & SCTL_MASK32) { 1623 struct if_msghdr32 *ifm32; 1624 1625 ifm32 = (struct if_msghdr32 *)w->w_tmem; 1626 ifm32->ifm_addrs = info->rti_addrs; 1627 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1628 ifm32->ifm_index = ifp->if_index; 1629 1630 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1631 1632 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1633 } 1634 #endif 1635 ifm = (struct if_msghdr *)w->w_tmem; 1636 ifm->ifm_addrs = info->rti_addrs; 1637 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1638 ifm->ifm_index = ifp->if_index; 1639 1640 ifm->ifm_data = ifp->if_data; 1641 1642 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1643 } 1644 1645 static int 1646 sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, 1647 struct walkarg *w, int len) 1648 { 1649 struct ifa_msghdrl *ifam; 1650 1651 #ifdef COMPAT_FREEBSD32 1652 if (w->w_req->flags & SCTL_MASK32) { 1653 struct ifa_msghdrl32 *ifam32; 1654 1655 ifam32 = (struct ifa_msghdrl32 *)w->w_tmem; 1656 ifam32->ifam_addrs = info->rti_addrs; 1657 ifam32->ifam_flags = ifa->ifa_flags; 1658 ifam32->ifam_index = ifa->ifa_ifp->if_index; 1659 ifam32->_ifam_spare1 = 0; 1660 ifam32->ifam_len = sizeof(*ifam32); 1661 ifam32->ifam_data_off = 1662 offsetof(struct ifa_msghdrl32, ifam_data); 1663 ifam32->ifam_metric = ifa->ifa_metric; 1664 1665 copy_ifdata32(&ifa->ifa_ifp->if_data, &ifam32->ifam_data); 1666 1667 return (SYSCTL_OUT(w->w_req, (caddr_t)ifam32, len)); 1668 } 1669 #endif 1670 1671 ifam = (struct ifa_msghdrl *)w->w_tmem; 1672 ifam->ifam_addrs = info->rti_addrs; 1673 ifam->ifam_flags = ifa->ifa_flags; 1674 ifam->ifam_index = ifa->ifa_ifp->if_index; 1675 ifam->_ifam_spare1 = 0; 1676 ifam->ifam_len = sizeof(*ifam); 1677 ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); 1678 ifam->ifam_metric = ifa->ifa_metric; 1679 1680 ifam->ifam_data = ifa->if_data; 1681 1682 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1683 } 1684 1685 static int 1686 sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, 1687 struct walkarg *w, int len) 1688 { 1689 struct ifa_msghdr *ifam; 1690 1691 ifam = (struct ifa_msghdr *)w->w_tmem; 1692 ifam->ifam_addrs = info->rti_addrs; 1693 ifam->ifam_flags = ifa->ifa_flags; 1694 ifam->ifam_index = ifa->ifa_ifp->if_index; 1695 ifam->ifam_metric = ifa->ifa_metric; 1696 1697 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1698 } 1699 1700 static int 1701 sysctl_iflist(int af, struct walkarg *w) 1702 { 1703 struct ifnet *ifp; 1704 struct ifaddr *ifa; 1705 struct rt_addrinfo info; 1706 int len, error = 0; 1707 1708 bzero((caddr_t)&info, sizeof(info)); 1709 IFNET_RLOCK(); 1710 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1711 if (w->w_arg && w->w_arg != ifp->if_index) 1712 continue; 1713 IF_ADDR_RLOCK(ifp); 1714 ifa = ifp->if_addr; 1715 info.rti_info[RTAX_IFP] = ifa->ifa_addr; 1716 len = rt_msg2(RTM_IFINFO, &info, NULL, w); 1717 info.rti_info[RTAX_IFP] = NULL; 1718 if (w->w_req && w->w_tmem) { 1719 if (w->w_op == NET_RT_IFLISTL) 1720 error = sysctl_iflist_ifml(ifp, &info, w, len); 1721 else 1722 error = sysctl_iflist_ifm(ifp, &info, w, len); 1723 if (error) 1724 goto done; 1725 } 1726 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) { 1727 if (af && af != ifa->ifa_addr->sa_family) 1728 continue; 1729 if (prison_if(w->w_req->td->td_ucred, 1730 ifa->ifa_addr) != 0) 1731 continue; 1732 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1733 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1734 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1735 len = rt_msg2(RTM_NEWADDR, &info, NULL, w); 1736 if (w->w_req && w->w_tmem) { 1737 if (w->w_op == NET_RT_IFLISTL) 1738 error = sysctl_iflist_ifaml(ifa, &info, 1739 w, len); 1740 else 1741 error = sysctl_iflist_ifam(ifa, &info, 1742 w, len); 1743 if (error) 1744 goto done; 1745 } 1746 } 1747 IF_ADDR_RUNLOCK(ifp); 1748 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1749 info.rti_info[RTAX_BRD] = NULL; 1750 } 1751 done: 1752 if (ifp != NULL) 1753 IF_ADDR_RUNLOCK(ifp); 1754 IFNET_RUNLOCK(); 1755 return (error); 1756 } 1757 1758 static int 1759 sysctl_ifmalist(int af, struct walkarg *w) 1760 { 1761 struct ifnet *ifp; 1762 struct ifmultiaddr *ifma; 1763 struct rt_addrinfo info; 1764 int len, error = 0; 1765 struct ifaddr *ifa; 1766 1767 bzero((caddr_t)&info, sizeof(info)); 1768 IFNET_RLOCK(); 1769 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1770 if (w->w_arg && w->w_arg != ifp->if_index) 1771 continue; 1772 ifa = ifp->if_addr; 1773 info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; 1774 IF_ADDR_RLOCK(ifp); 1775 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1776 if (af && af != ifma->ifma_addr->sa_family) 1777 continue; 1778 if (prison_if(w->w_req->td->td_ucred, 1779 ifma->ifma_addr) != 0) 1780 continue; 1781 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1782 info.rti_info[RTAX_GATEWAY] = 1783 (ifma->ifma_addr->sa_family != AF_LINK) ? 1784 ifma->ifma_lladdr : NULL; 1785 len = rt_msg2(RTM_NEWMADDR, &info, NULL, w); 1786 if (w->w_req && w->w_tmem) { 1787 struct ifma_msghdr *ifmam; 1788 1789 ifmam = (struct ifma_msghdr *)w->w_tmem; 1790 ifmam->ifmam_index = ifma->ifma_ifp->if_index; 1791 ifmam->ifmam_flags = 0; 1792 ifmam->ifmam_addrs = info.rti_addrs; 1793 error = SYSCTL_OUT(w->w_req, w->w_tmem, len); 1794 if (error) { 1795 IF_ADDR_RUNLOCK(ifp); 1796 goto done; 1797 } 1798 } 1799 } 1800 IF_ADDR_RUNLOCK(ifp); 1801 } 1802 done: 1803 IFNET_RUNLOCK(); 1804 return (error); 1805 } 1806 1807 static int 1808 sysctl_rtsock(SYSCTL_HANDLER_ARGS) 1809 { 1810 int *name = (int *)arg1; 1811 u_int namelen = arg2; 1812 struct radix_node_head *rnh = NULL; /* silence compiler. */ 1813 int i, lim, error = EINVAL; 1814 u_char af; 1815 struct walkarg w; 1816 1817 name ++; 1818 namelen--; 1819 if (req->newptr) 1820 return (EPERM); 1821 if (namelen != 3) 1822 return ((namelen < 3) ? EISDIR : ENOTDIR); 1823 af = name[0]; 1824 if (af > AF_MAX) 1825 return (EINVAL); 1826 bzero(&w, sizeof(w)); 1827 w.w_op = name[1]; 1828 w.w_arg = name[2]; 1829 w.w_req = req; 1830 1831 error = sysctl_wire_old_buffer(req, 0); 1832 if (error) 1833 return (error); 1834 switch (w.w_op) { 1835 1836 case NET_RT_DUMP: 1837 case NET_RT_FLAGS: 1838 if (af == 0) { /* dump all tables */ 1839 i = 1; 1840 lim = AF_MAX; 1841 } else /* dump only one table */ 1842 i = lim = af; 1843 1844 /* 1845 * take care of llinfo entries, the caller must 1846 * specify an AF 1847 */ 1848 if (w.w_op == NET_RT_FLAGS && 1849 (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) { 1850 if (af != 0) 1851 error = lltable_sysctl_dumparp(af, w.w_req); 1852 else 1853 error = EINVAL; 1854 break; 1855 } 1856 /* 1857 * take care of routing entries 1858 */ 1859 for (error = 0; error == 0 && i <= lim; i++) { 1860 rnh = rt_tables_get_rnh(req->td->td_proc->p_fibnum, i); 1861 if (rnh != NULL) { 1862 RADIX_NODE_HEAD_RLOCK(rnh); 1863 error = rnh->rnh_walktree(rnh, 1864 sysctl_dumpentry, &w); 1865 RADIX_NODE_HEAD_RUNLOCK(rnh); 1866 } else if (af != 0) 1867 error = EAFNOSUPPORT; 1868 } 1869 break; 1870 1871 case NET_RT_IFLIST: 1872 case NET_RT_IFLISTL: 1873 error = sysctl_iflist(af, &w); 1874 break; 1875 1876 case NET_RT_IFMALIST: 1877 error = sysctl_ifmalist(af, &w); 1878 break; 1879 } 1880 if (w.w_tmem) 1881 free(w.w_tmem, M_RTABLE); 1882 return (error); 1883 } 1884 1885 SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); 1886 1887 /* 1888 * Definitions of protocols supported in the ROUTE domain. 1889 */ 1890 1891 static struct domain routedomain; /* or at least forward */ 1892 1893 static struct protosw routesw[] = { 1894 { 1895 .pr_type = SOCK_RAW, 1896 .pr_domain = &routedomain, 1897 .pr_flags = PR_ATOMIC|PR_ADDR, 1898 .pr_output = route_output, 1899 .pr_ctlinput = raw_ctlinput, 1900 .pr_init = raw_init, 1901 .pr_usrreqs = &route_usrreqs 1902 } 1903 }; 1904 1905 static struct domain routedomain = { 1906 .dom_family = PF_ROUTE, 1907 .dom_name = "route", 1908 .dom_protosw = routesw, 1909 .dom_protoswNPROTOSW = &routesw[sizeof(routesw)/sizeof(routesw[0])] 1910 }; 1911 1912 VNET_DOMAIN_SET(route);
Cache object: d6c8390c67563ed065098285991d3671
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