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 * $FreeBSD$ 31 */ 32#include "opt_compat.h" 33#include "opt_mpath.h" 34#include "opt_inet.h" 35#include "opt_inet6.h" 36 37#include <sys/param.h> 38#include <sys/jail.h> 39#include <sys/kernel.h> 40#include <sys/domain.h> 41#include <sys/lock.h> 42#include <sys/malloc.h> 43#include <sys/mbuf.h> 44#include <sys/priv.h> 45#include <sys/proc.h> 46#include <sys/protosw.h> 47#include <sys/rwlock.h> 48#include <sys/signalvar.h> 49#include <sys/socket.h> 50#include <sys/socketvar.h> 51#include <sys/sysctl.h> 52#include <sys/systm.h> 53 54#define _IN_NET_RTSOCK_C 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#include <netinet/ip_carp.h> 67#ifdef INET6 68#include <netinet6/ip6_var.h> 69#include <netinet6/scope6_var.h> 70#endif 71 72#ifdef COMPAT_FREEBSD32 73#include <sys/mount.h> 74#include <compat/freebsd32/freebsd32.h> 75 76struct if_data32 { 77 uint8_t ifi_type; 78 uint8_t ifi_physical; 79 uint8_t ifi_addrlen; 80 uint8_t ifi_hdrlen; 81 uint8_t ifi_link_state; 82 uint8_t ifi_vhid; 83 uint8_t ifi_baudrate_pf; 84 uint8_t ifi_datalen; 85 uint32_t ifi_mtu; 86 uint32_t ifi_metric; 87 uint32_t ifi_baudrate; 88 uint32_t ifi_ipackets; 89 uint32_t ifi_ierrors; 90 uint32_t ifi_opackets; 91 uint32_t ifi_oerrors; 92 uint32_t ifi_collisions; 93 uint32_t ifi_ibytes; 94 uint32_t ifi_obytes; 95 uint32_t ifi_imcasts; 96 uint32_t ifi_omcasts; 97 uint32_t ifi_iqdrops; 98 uint32_t ifi_noproto; 99 uint32_t ifi_hwassist; 100 int32_t ifi_epoch; 101 struct timeval32 ifi_lastchange; 102 uint32_t ifi_oqdrops; 103}; 104 105struct if_msghdr32 { 106 uint16_t ifm_msglen; 107 uint8_t ifm_version; 108 uint8_t ifm_type; 109 int32_t ifm_addrs; 110 int32_t ifm_flags; 111 uint16_t ifm_index; 112 struct if_data32 ifm_data; 113}; 114 115struct if_msghdrl32 { 116 uint16_t ifm_msglen; 117 uint8_t ifm_version; 118 uint8_t ifm_type; 119 int32_t ifm_addrs; 120 int32_t ifm_flags; 121 uint16_t ifm_index; 122 uint16_t _ifm_spare1; 123 uint16_t ifm_len; 124 uint16_t ifm_data_off; 125 struct if_data32 ifm_data; 126}; 127 128struct ifa_msghdrl32 { 129 uint16_t ifam_msglen; 130 uint8_t ifam_version; 131 uint8_t ifam_type; 132 int32_t ifam_addrs; 133 int32_t ifam_flags; 134 uint16_t ifam_index; 135 uint16_t _ifam_spare1; 136 uint16_t ifam_len; 137 uint16_t ifam_data_off; 138 int32_t ifam_metric; 139 struct if_data32 ifam_data; 140}; 141#endif /* COMPAT_FREEBSD32 */ 142 143MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); 144 145/* NB: these are not modified */ 146static struct sockaddr route_src = { 2, PF_ROUTE, }; 147static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, }; 148 149/* These are external hooks for CARP. */ 150int (*carp_get_vhid_p)(struct ifaddr *); 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 158static struct { 159 int ip_count; /* attached w/ AF_INET */ 160 int ip6_count; /* attached w/ AF_INET6 */ 161 int ipx_count; /* attached w/ AF_IPX */ 162 int any_count; /* total attached */ 163} route_cb; 164 165struct mtx rtsock_mtx; 166MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF); 167 168#define RTSOCK_LOCK() mtx_lock(&rtsock_mtx) 169#define RTSOCK_UNLOCK() mtx_unlock(&rtsock_mtx) 170#define RTSOCK_LOCK_ASSERT() mtx_assert(&rtsock_mtx, MA_OWNED) 171 172static SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, ""); 173 174struct walkarg { 175 int w_tmemsize; 176 int w_op, w_arg; 177 caddr_t w_tmem; 178 struct sysctl_req *w_req; 179}; 180 181static void rts_input(struct mbuf *m); 182static struct mbuf *rt_msg1(int type, struct rt_addrinfo *rtinfo); 183static int rt_msg2(int type, struct rt_addrinfo *rtinfo, 184 caddr_t cp, struct walkarg *w); 185static int rt_xaddrs(caddr_t cp, caddr_t cplim, 186 struct rt_addrinfo *rtinfo); 187static int sysctl_dumpentry(struct radix_node *rn, void *vw); 188static int sysctl_iflist(int af, struct walkarg *w); 189static int sysctl_ifmalist(int af, struct walkarg *w); 190static int route_output(struct mbuf *m, struct socket *so); 191static void rt_setmetrics(const struct rt_msghdr *rtm, struct rtentry *rt); 192static void rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out); 193static void rt_dispatch(struct mbuf *, sa_family_t); 194 195static struct netisr_handler rtsock_nh = { 196 .nh_name = "rtsock", 197 .nh_handler = rts_input, 198 .nh_proto = NETISR_ROUTE, 199 .nh_policy = NETISR_POLICY_SOURCE, 200}; 201 202static int 203sysctl_route_netisr_maxqlen(SYSCTL_HANDLER_ARGS) 204{ 205 int error, qlimit; 206 207 netisr_getqlimit(&rtsock_nh, &qlimit); 208 error = sysctl_handle_int(oidp, &qlimit, 0, req); 209 if (error || !req->newptr) 210 return (error); 211 if (qlimit < 1) 212 return (EINVAL); 213 return (netisr_setqlimit(&rtsock_nh, qlimit)); 214} 215SYSCTL_PROC(_net_route, OID_AUTO, netisr_maxqlen, CTLTYPE_INT|CTLFLAG_RW, 216 0, 0, sysctl_route_netisr_maxqlen, "I", 217 "maximum routing socket dispatch queue length"); 218 219static void 220rts_init(void) 221{ 222 int tmp; 223 224 if (TUNABLE_INT_FETCH("net.route.netisr_maxqlen", &tmp)) 225 rtsock_nh.nh_qlimit = tmp; 226 netisr_register(&rtsock_nh); 227} 228SYSINIT(rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, rts_init, 0); 229 230static int 231raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src, 232 struct rawcb *rp) 233{ 234 int fibnum; 235 236 KASSERT(m != NULL, ("%s: m is NULL", __func__)); 237 KASSERT(proto != NULL, ("%s: proto is NULL", __func__)); 238 KASSERT(rp != NULL, ("%s: rp is NULL", __func__)); 239 240 /* No filtering requested. */ 241 if ((m->m_flags & RTS_FILTER_FIB) == 0) 242 return (0); 243 244 /* Check if it is a rts and the fib matches the one of the socket. */ 245 fibnum = M_GETFIB(m); 246 if (proto->sp_family != PF_ROUTE || 247 rp->rcb_socket == NULL || 248 rp->rcb_socket->so_fibnum == fibnum) 249 return (0); 250 251 /* Filtering requested and no match, the socket shall be skipped. */ 252 return (1); 253} 254 255static void 256rts_input(struct mbuf *m) 257{ 258 struct sockproto route_proto; 259 unsigned short *family; 260 struct m_tag *tag; 261 262 route_proto.sp_family = PF_ROUTE; 263 tag = m_tag_find(m, PACKET_TAG_RTSOCKFAM, NULL); 264 if (tag != NULL) { 265 family = (unsigned short *)(tag + 1); 266 route_proto.sp_protocol = *family; 267 m_tag_delete(m, tag); 268 } else 269 route_proto.sp_protocol = 0; 270 271 raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb); 272} 273 274/* 275 * It really doesn't make any sense at all for this code to share much 276 * with raw_usrreq.c, since its functionality is so restricted. XXX 277 */ 278static void 279rts_abort(struct socket *so) 280{ 281 282 raw_usrreqs.pru_abort(so); 283} 284 285static void 286rts_close(struct socket *so) 287{ 288 289 raw_usrreqs.pru_close(so); 290} 291 292/* pru_accept is EOPNOTSUPP */ 293 294static int 295rts_attach(struct socket *so, int proto, struct thread *td) 296{ 297 struct rawcb *rp; 298 int error; 299 300 KASSERT(so->so_pcb == NULL, ("rts_attach: so_pcb != NULL")); 301 302 /* XXX */ 303 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO); 304 305 so->so_pcb = (caddr_t)rp; 306 so->so_fibnum = td->td_proc->p_fibnum; 307 error = raw_attach(so, proto); 308 rp = sotorawcb(so); 309 if (error) { 310 so->so_pcb = NULL; 311 free(rp, M_PCB); 312 return error; 313 } 314 RTSOCK_LOCK(); 315 switch(rp->rcb_proto.sp_protocol) { 316 case AF_INET: 317 route_cb.ip_count++; 318 break; 319 case AF_INET6: 320 route_cb.ip6_count++; 321 break; 322 case AF_IPX: 323 route_cb.ipx_count++; 324 break; 325 } 326 route_cb.any_count++; 327 RTSOCK_UNLOCK(); 328 soisconnected(so); 329 so->so_options |= SO_USELOOPBACK; 330 return 0; 331} 332 333static int 334rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 335{ 336 337 return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */ 338} 339 340static int 341rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 342{ 343 344 return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */ 345} 346 347/* pru_connect2 is EOPNOTSUPP */ 348/* pru_control is EOPNOTSUPP */ 349 350static void 351rts_detach(struct socket *so) 352{ 353 struct rawcb *rp = sotorawcb(so); 354 355 KASSERT(rp != NULL, ("rts_detach: rp == NULL")); 356 357 RTSOCK_LOCK(); 358 switch(rp->rcb_proto.sp_protocol) { 359 case AF_INET: 360 route_cb.ip_count--; 361 break; 362 case AF_INET6: 363 route_cb.ip6_count--; 364 break; 365 case AF_IPX: 366 route_cb.ipx_count--; 367 break; 368 } 369 route_cb.any_count--; 370 RTSOCK_UNLOCK(); 371 raw_usrreqs.pru_detach(so); 372} 373 374static int 375rts_disconnect(struct socket *so) 376{ 377 378 return (raw_usrreqs.pru_disconnect(so)); 379} 380 381/* pru_listen is EOPNOTSUPP */ 382 383static int 384rts_peeraddr(struct socket *so, struct sockaddr **nam) 385{ 386 387 return (raw_usrreqs.pru_peeraddr(so, nam)); 388} 389 390/* pru_rcvd is EOPNOTSUPP */ 391/* pru_rcvoob is EOPNOTSUPP */ 392 393static int 394rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 395 struct mbuf *control, struct thread *td) 396{ 397 398 return (raw_usrreqs.pru_send(so, flags, m, nam, control, td)); 399} 400 401/* pru_sense is null */ 402 403static int 404rts_shutdown(struct socket *so) 405{ 406 407 return (raw_usrreqs.pru_shutdown(so)); 408} 409 410static int 411rts_sockaddr(struct socket *so, struct sockaddr **nam) 412{ 413 414 return (raw_usrreqs.pru_sockaddr(so, nam)); 415} 416 417static struct pr_usrreqs route_usrreqs = { 418 .pru_abort = rts_abort, 419 .pru_attach = rts_attach, 420 .pru_bind = rts_bind, 421 .pru_connect = rts_connect, 422 .pru_detach = rts_detach, 423 .pru_disconnect = rts_disconnect, 424 .pru_peeraddr = rts_peeraddr, 425 .pru_send = rts_send, 426 .pru_shutdown = rts_shutdown, 427 .pru_sockaddr = rts_sockaddr, 428 .pru_close = rts_close, 429}; 430 431#ifndef _SOCKADDR_UNION_DEFINED 432#define _SOCKADDR_UNION_DEFINED 433/* 434 * The union of all possible address formats we handle. 435 */ 436union sockaddr_union { 437 struct sockaddr sa; 438 struct sockaddr_in sin; 439 struct sockaddr_in6 sin6; 440}; 441#endif /* _SOCKADDR_UNION_DEFINED */ 442 443static int 444rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, 445 struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred) 446{ 447 448 /* First, see if the returned address is part of the jail. */ 449 if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) { 450 info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 451 return (0); 452 } 453 454 switch (info->rti_info[RTAX_DST]->sa_family) { 455#ifdef INET 456 case AF_INET: 457 { 458 struct in_addr ia; 459 struct ifaddr *ifa; 460 int found; 461 462 found = 0; 463 /* 464 * Try to find an address on the given outgoing interface 465 * that belongs to the jail. 466 */ 467 IF_ADDR_RLOCK(ifp); 468 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 469 struct sockaddr *sa; 470 sa = ifa->ifa_addr; 471 if (sa->sa_family != AF_INET) 472 continue; 473 ia = ((struct sockaddr_in *)sa)->sin_addr; 474 if (prison_check_ip4(cred, &ia) == 0) { 475 found = 1; 476 break; 477 } 478 } 479 IF_ADDR_RUNLOCK(ifp); 480 if (!found) { 481 /* 482 * As a last resort return the 'default' jail address. 483 */ 484 ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)-> 485 sin_addr; 486 if (prison_get_ip4(cred, &ia) != 0) 487 return (ESRCH); 488 } 489 bzero(&saun->sin, sizeof(struct sockaddr_in)); 490 saun->sin.sin_len = sizeof(struct sockaddr_in); 491 saun->sin.sin_family = AF_INET; 492 saun->sin.sin_addr.s_addr = ia.s_addr; 493 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin; 494 break; 495 } 496#endif 497#ifdef INET6 498 case AF_INET6: 499 { 500 struct in6_addr ia6; 501 struct ifaddr *ifa; 502 int found; 503 504 found = 0; 505 /* 506 * Try to find an address on the given outgoing interface 507 * that belongs to the jail. 508 */ 509 IF_ADDR_RLOCK(ifp); 510 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 511 struct sockaddr *sa; 512 sa = ifa->ifa_addr; 513 if (sa->sa_family != AF_INET6) 514 continue; 515 bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, 516 &ia6, sizeof(struct in6_addr)); 517 if (prison_check_ip6(cred, &ia6) == 0) { 518 found = 1; 519 break; 520 } 521 } 522 IF_ADDR_RUNLOCK(ifp); 523 if (!found) { 524 /* 525 * As a last resort return the 'default' jail address. 526 */ 527 ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)-> 528 sin6_addr; 529 if (prison_get_ip6(cred, &ia6) != 0) 530 return (ESRCH); 531 } 532 bzero(&saun->sin6, sizeof(struct sockaddr_in6)); 533 saun->sin6.sin6_len = sizeof(struct sockaddr_in6); 534 saun->sin6.sin6_family = AF_INET6; 535 bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr)); 536 if (sa6_recoverscope(&saun->sin6) != 0) 537 return (ESRCH); 538 info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6; 539 break; 540 } 541#endif 542 default: 543 return (ESRCH); 544 } 545 return (0); 546} 547 548/*ARGSUSED*/ 549static int 550route_output(struct mbuf *m, struct socket *so) 551{ 552#define sa_equal(a1, a2) (bcmp((a1), (a2), (a1)->sa_len) == 0) 553 struct rt_msghdr *rtm = NULL; 554 struct rtentry *rt = NULL; 555 struct radix_node_head *rnh; 556 struct rt_addrinfo info; 557#ifdef INET6 558 struct sockaddr_storage ss; 559 struct sockaddr_in6 *sin6; 560 int i, rti_need_deembed = 0; 561#endif 562 int len, error = 0; 563 struct ifnet *ifp = NULL; 564 union sockaddr_union saun; 565 sa_family_t saf = AF_UNSPEC; 566 567#define senderr(e) { error = e; goto flush;} 568 if (m == NULL || ((m->m_len < sizeof(long)) && 569 (m = m_pullup(m, sizeof(long))) == NULL)) 570 return (ENOBUFS); 571 if ((m->m_flags & M_PKTHDR) == 0) 572 panic("route_output"); 573 len = m->m_pkthdr.len; 574 if (len < sizeof(*rtm) || 575 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 576 info.rti_info[RTAX_DST] = NULL; 577 senderr(EINVAL); 578 } 579 R_Malloc(rtm, struct rt_msghdr *, len); 580 if (rtm == NULL) { 581 info.rti_info[RTAX_DST] = NULL; 582 senderr(ENOBUFS); 583 } 584 m_copydata(m, 0, len, (caddr_t)rtm); 585 if (rtm->rtm_version != RTM_VERSION) { 586 info.rti_info[RTAX_DST] = NULL; 587 senderr(EPROTONOSUPPORT); 588 } 589 rtm->rtm_pid = curproc->p_pid; 590 bzero(&info, sizeof(info)); 591 info.rti_addrs = rtm->rtm_addrs; 592 /* 593 * rt_xaddrs() performs s6_addr[2] := sin6_scope_id for AF_INET6 594 * link-local address because rtrequest requires addresses with 595 * embedded scope id. 596 */ 597 if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) { 598 info.rti_info[RTAX_DST] = NULL; 599 senderr(EINVAL); 600 } 601 info.rti_flags = rtm->rtm_flags; 602 if (info.rti_info[RTAX_DST] == NULL || 603 info.rti_info[RTAX_DST]->sa_family >= AF_MAX || 604 (info.rti_info[RTAX_GATEWAY] != NULL && 605 info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) 606 senderr(EINVAL); 607 saf = info.rti_info[RTAX_DST]->sa_family; 608 /* 609 * Verify that the caller has the appropriate privilege; RTM_GET 610 * is the only operation the non-superuser is allowed. 611 */ 612 if (rtm->rtm_type != RTM_GET) { 613 error = priv_check(curthread, PRIV_NET_ROUTE); 614 if (error) 615 senderr(error); 616 } 617 618 /* 619 * The given gateway address may be an interface address. 620 * For example, issuing a "route change" command on a route 621 * entry that was created from a tunnel, and the gateway 622 * address given is the local end point. In this case the 623 * RTF_GATEWAY flag must be cleared or the destination will 624 * not be reachable even though there is no error message. 625 */ 626 if (info.rti_info[RTAX_GATEWAY] != NULL && 627 info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) { 628 struct route gw_ro; 629 630 bzero(&gw_ro, sizeof(gw_ro)); 631 gw_ro.ro_dst = *info.rti_info[RTAX_GATEWAY]; 632 rtalloc_ign_fib(&gw_ro, 0, so->so_fibnum); 633 /* 634 * A host route through the loopback interface is 635 * installed for each interface adddress. In pre 8.0 636 * releases the interface address of a PPP link type 637 * is not reachable locally. This behavior is fixed as 638 * part of the new L2/L3 redesign and rewrite work. The 639 * signature of this interface address route is the 640 * AF_LINK sa_family type of the rt_gateway, and the 641 * rt_ifp has the IFF_LOOPBACK flag set. 642 */ 643 if (gw_ro.ro_rt != NULL && 644 gw_ro.ro_rt->rt_gateway->sa_family == AF_LINK && 645 gw_ro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) { 646 info.rti_flags &= ~RTF_GATEWAY; 647 info.rti_flags |= RTF_GWFLAG_COMPAT; 648 } 649 if (gw_ro.ro_rt != NULL) 650 RTFREE(gw_ro.ro_rt); 651 } 652 653 switch (rtm->rtm_type) { 654 struct rtentry *saved_nrt; 655 656 case RTM_ADD: 657 if (info.rti_info[RTAX_GATEWAY] == NULL) 658 senderr(EINVAL); 659 saved_nrt = NULL; 660 661 /* support for new ARP code */ 662 if (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK && 663 (rtm->rtm_flags & RTF_LLDATA) != 0) { 664 error = lla_rt_output(rtm, &info); 665#ifdef INET6 666 if (error == 0) 667 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; 668#endif 669 break; 670 } 671 error = rtrequest1_fib(RTM_ADD, &info, &saved_nrt, 672 so->so_fibnum); 673 if (error == 0 && saved_nrt) { 674#ifdef INET6 675 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; 676#endif 677 RT_LOCK(saved_nrt); 678 rt_setmetrics(rtm, saved_nrt); 679 rtm->rtm_index = saved_nrt->rt_ifp->if_index; 680 RT_REMREF(saved_nrt); 681 RT_UNLOCK(saved_nrt); 682 } 683 break; 684 685 case RTM_DELETE: 686 saved_nrt = NULL; 687 /* support for new ARP code */ 688 if (info.rti_info[RTAX_GATEWAY] && 689 (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && 690 (rtm->rtm_flags & RTF_LLDATA) != 0) { 691 error = lla_rt_output(rtm, &info); 692#ifdef INET6 693 if (error == 0) 694 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; 695#endif 696 break; 697 } 698 error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, 699 so->so_fibnum); 700 if (error == 0) { 701 RT_LOCK(saved_nrt); 702 rt = saved_nrt; 703 goto report; 704 } 705#ifdef INET6 706 /* rt_msg2() will not be used when RTM_DELETE fails. */ 707 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; 708#endif 709 break; 710 711 case RTM_GET: 712 case RTM_CHANGE: 713 case RTM_LOCK: 714 rnh = rt_tables_get_rnh(so->so_fibnum, 715 info.rti_info[RTAX_DST]->sa_family); 716 if (rnh == NULL) 717 senderr(EAFNOSUPPORT); 718 719 RADIX_NODE_HEAD_RLOCK(rnh); 720 721 if (info.rti_info[RTAX_NETMASK] == NULL && 722 rtm->rtm_type == RTM_GET) { 723 /* 724 * Provide logest prefix match for 725 * address lookup (no mask). 726 * 'route -n get addr' 727 */ 728 rt = (struct rtentry *) rnh->rnh_matchaddr( 729 info.rti_info[RTAX_DST], rnh); 730 } else 731 rt = (struct rtentry *) rnh->rnh_lookup( 732 info.rti_info[RTAX_DST], 733 info.rti_info[RTAX_NETMASK], rnh); 734 735 if (rt == NULL) { 736 RADIX_NODE_HEAD_RUNLOCK(rnh); 737 senderr(ESRCH); 738 } 739#ifdef RADIX_MPATH 740 /* 741 * for RTM_CHANGE/LOCK, if we got multipath routes, 742 * we require users to specify a matching RTAX_GATEWAY. 743 * 744 * for RTM_GET, gate is optional even with multipath. 745 * if gate == NULL the first match is returned. 746 * (no need to call rt_mpath_matchgate if gate == NULL) 747 */ 748 if (rn_mpath_capable(rnh) && 749 (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) { 750 rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]); 751 if (!rt) { 752 RADIX_NODE_HEAD_RUNLOCK(rnh); 753 senderr(ESRCH); 754 } 755 } 756#endif 757 /* 758 * If performing proxied L2 entry insertion, and 759 * the actual PPP host entry is found, perform 760 * another search to retrieve the prefix route of 761 * the local end point of the PPP link. 762 */ 763 if (rtm->rtm_flags & RTF_ANNOUNCE) { 764 struct sockaddr laddr; 765 766 if (rt->rt_ifp != NULL && 767 rt->rt_ifp->if_type == IFT_PROPVIRTUAL) { 768 struct ifaddr *ifa; 769 770 ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1); 771 if (ifa != NULL) 772 rt_maskedcopy(ifa->ifa_addr, 773 &laddr, 774 ifa->ifa_netmask); 775 } else 776 rt_maskedcopy(rt->rt_ifa->ifa_addr, 777 &laddr, 778 rt->rt_ifa->ifa_netmask); 779 /* 780 * refactor rt and no lock operation necessary 781 */ 782 rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr, rnh); 783 if (rt == NULL) { 784 RADIX_NODE_HEAD_RUNLOCK(rnh); 785 senderr(ESRCH); 786 } 787 } 788 RT_LOCK(rt); 789 RT_ADDREF(rt); 790 RADIX_NODE_HEAD_RUNLOCK(rnh); 791 792 switch(rtm->rtm_type) { 793 794 case RTM_GET: 795 report: 796 RT_LOCK_ASSERT(rt); 797 if ((rt->rt_flags & RTF_HOST) == 0 798 ? jailed_without_vnet(curthread->td_ucred) 799 : prison_if(curthread->td_ucred, 800 rt_key(rt)) != 0) { 801 RT_UNLOCK(rt); 802 senderr(ESRCH); 803 } 804 info.rti_info[RTAX_DST] = rt_key(rt); 805 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 806 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 807 info.rti_info[RTAX_GENMASK] = 0; 808 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 809 ifp = rt->rt_ifp; 810 if (ifp) { 811 info.rti_info[RTAX_IFP] = 812 ifp->if_addr->ifa_addr; 813 error = rtm_get_jailed(&info, ifp, rt, 814 &saun, curthread->td_ucred); 815 if (error != 0) { 816 RT_UNLOCK(rt); 817 senderr(error); 818 } 819 if (ifp->if_flags & IFF_POINTOPOINT) 820 info.rti_info[RTAX_BRD] = 821 rt->rt_ifa->ifa_dstaddr; 822 rtm->rtm_index = ifp->if_index; 823 } else { 824 info.rti_info[RTAX_IFP] = NULL; 825 info.rti_info[RTAX_IFA] = NULL; 826 } 827 } else if ((ifp = rt->rt_ifp) != NULL) { 828 rtm->rtm_index = ifp->if_index; 829 } 830 len = rt_msg2(rtm->rtm_type, &info, NULL, NULL); 831 if (len > rtm->rtm_msglen) { 832 struct rt_msghdr *new_rtm; 833 R_Malloc(new_rtm, struct rt_msghdr *, len); 834 if (new_rtm == NULL) { 835 RT_UNLOCK(rt); 836 senderr(ENOBUFS); 837 } 838 bcopy(rtm, new_rtm, rtm->rtm_msglen); 839 Free(rtm); rtm = new_rtm; 840 } 841 (void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm, NULL); 842 if (rt->rt_flags & RTF_GWFLAG_COMPAT) 843 rtm->rtm_flags = RTF_GATEWAY | 844 (rt->rt_flags & ~RTF_GWFLAG_COMPAT); 845 else 846 rtm->rtm_flags = rt->rt_flags; 847 rt_getmetrics(rt, &rtm->rtm_rmx); 848 rtm->rtm_addrs = info.rti_addrs; 849 break; 850 851 case RTM_CHANGE: 852 /* 853 * New gateway could require new ifaddr, ifp; 854 * flags may also be different; ifp may be specified 855 * by ll sockaddr when protocol address is ambiguous 856 */ 857 if (((rt->rt_flags & RTF_GATEWAY) && 858 info.rti_info[RTAX_GATEWAY] != NULL) || 859 info.rti_info[RTAX_IFP] != NULL || 860 (info.rti_info[RTAX_IFA] != NULL && 861 !sa_equal(info.rti_info[RTAX_IFA], 862 rt->rt_ifa->ifa_addr))) { 863 RT_UNLOCK(rt); 864 RADIX_NODE_HEAD_LOCK(rnh); 865 error = rt_getifa_fib(&info, rt->rt_fibnum); 866 /* 867 * XXXRW: Really we should release this 868 * reference later, but this maintains 869 * historical behavior. 870 */ 871 if (info.rti_ifa != NULL) 872 ifa_free(info.rti_ifa); 873 RADIX_NODE_HEAD_UNLOCK(rnh); 874 if (error != 0) 875 senderr(error); 876 RT_LOCK(rt); 877 } 878 if (info.rti_ifa != NULL && 879 info.rti_ifa != rt->rt_ifa && 880 rt->rt_ifa != NULL && 881 rt->rt_ifa->ifa_rtrequest != NULL) { 882 rt->rt_ifa->ifa_rtrequest(RTM_DELETE, rt, 883 &info); 884 ifa_free(rt->rt_ifa); 885 } 886 if (info.rti_info[RTAX_GATEWAY] != NULL) { 887 RT_UNLOCK(rt); 888 RADIX_NODE_HEAD_LOCK(rnh); 889 RT_LOCK(rt); 890 891 error = rt_setgate(rt, rt_key(rt), 892 info.rti_info[RTAX_GATEWAY]); 893 RADIX_NODE_HEAD_UNLOCK(rnh); 894 if (error != 0) { 895 RT_UNLOCK(rt); 896 senderr(error); 897 } 898 rt->rt_flags &= ~RTF_GATEWAY; 899 rt->rt_flags |= (RTF_GATEWAY & info.rti_flags); 900 } 901 if (info.rti_ifa != NULL && 902 info.rti_ifa != rt->rt_ifa) { 903 ifa_ref(info.rti_ifa); 904 rt->rt_ifa = info.rti_ifa; 905 rt->rt_ifp = info.rti_ifp; 906 } 907 /* Allow some flags to be toggled on change. */ 908 rt->rt_flags = (rt->rt_flags & ~RTF_FMASK) | 909 (rtm->rtm_flags & RTF_FMASK); 910 rt_setmetrics(rtm, rt); 911 rtm->rtm_index = rt->rt_ifp->if_index; 912 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 913 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 914 /* FALLTHROUGH */ 915 case RTM_LOCK: 916 /* We don't support locks anymore */ 917 break; 918 } 919 RT_UNLOCK(rt); 920 break; 921 922 default: 923 senderr(EOPNOTSUPP); 924 } 925 926flush: 927 if (rtm) { 928 if (error) 929 rtm->rtm_errno = error; 930 else 931 rtm->rtm_flags |= RTF_DONE; 932 } 933 if (rt) /* XXX can this be true? */ 934 RTFREE(rt); 935 { 936 struct rawcb *rp = NULL; 937 /* 938 * Check to see if we don't want our own messages. 939 */ 940 if ((so->so_options & SO_USELOOPBACK) == 0) { 941 if (route_cb.any_count <= 1) { 942 if (rtm) 943 Free(rtm); 944 m_freem(m); 945 return (error); 946 } 947 /* There is another listener, so construct message */ 948 rp = sotorawcb(so); 949 } 950 if (rtm) { 951#ifdef INET6 952 if (rti_need_deembed) { 953 /* sin6_scope_id is recovered before sending rtm. */ 954 sin6 = (struct sockaddr_in6 *)&ss; 955 for (i = 0; i < RTAX_MAX; i++) { 956 if (info.rti_info[i] == NULL) 957 continue; 958 if (info.rti_info[i]->sa_family != AF_INET6) 959 continue; 960 bcopy(info.rti_info[i], sin6, sizeof(*sin6)); 961 if (sa6_recoverscope(sin6) == 0) 962 bcopy(sin6, info.rti_info[i], 963 sizeof(*sin6)); 964 } 965 } 966#endif 967 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 968 if (m->m_pkthdr.len < rtm->rtm_msglen) { 969 m_freem(m); 970 m = NULL; 971 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 972 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 973 } 974 if (m) { 975 M_SETFIB(m, so->so_fibnum); 976 m->m_flags |= RTS_FILTER_FIB; 977 if (rp) { 978 /* 979 * XXX insure we don't get a copy by 980 * invalidating our protocol 981 */ 982 unsigned short family = rp->rcb_proto.sp_family; 983 rp->rcb_proto.sp_family = 0; 984 rt_dispatch(m, saf); 985 rp->rcb_proto.sp_family = family; 986 } else 987 rt_dispatch(m, saf); 988 } 989 /* info.rti_info[RTAX_DST] (used above) can point inside of rtm */ 990 if (rtm) 991 Free(rtm); 992 } 993 return (error); 994#undef sa_equal 995} 996 997static void 998rt_setmetrics(const struct rt_msghdr *rtm, struct rtentry *rt) 999{ 1000 1001 if (rtm->rtm_inits & RTV_MTU) 1002 rt->rt_mtu = rtm->rtm_rmx.rmx_mtu; 1003 if (rtm->rtm_inits & RTV_WEIGHT) 1004 rt->rt_weight = rtm->rtm_rmx.rmx_weight; 1005 /* Kernel -> userland timebase conversion. */ 1006 if (rtm->rtm_inits & RTV_EXPIRE) 1007 rt->rt_expire = rtm->rtm_rmx.rmx_expire ? 1008 rtm->rtm_rmx.rmx_expire - time_second + time_uptime : 0; 1009} 1010 1011static void 1012rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out) 1013{ 1014 1015 bzero(out, sizeof(*out)); 1016 out->rmx_mtu = rt->rt_mtu; 1017 out->rmx_weight = rt->rt_weight; 1018 out->rmx_pksent = counter_u64_fetch(rt->rt_pksent); 1019 /* Kernel -> userland timebase conversion. */ 1020 out->rmx_expire = rt->rt_expire ? 1021 rt->rt_expire - time_uptime + time_second : 0; 1022} 1023 1024/* 1025 * Extract the addresses of the passed sockaddrs. 1026 * Do a little sanity checking so as to avoid bad memory references. 1027 * This data is derived straight from userland. 1028 */ 1029static int 1030rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) 1031{ 1032 struct sockaddr *sa; 1033 int i; 1034 1035 for (i = 0; i < RTAX_MAX && cp < cplim; i++) { 1036 if ((rtinfo->rti_addrs & (1 << i)) == 0) 1037 continue; 1038 sa = (struct sockaddr *)cp; 1039 /* 1040 * It won't fit. 1041 */ 1042 if (cp + sa->sa_len > cplim) 1043 return (EINVAL); 1044 /* 1045 * there are no more.. quit now 1046 * If there are more bits, they are in error. 1047 * I've seen this. route(1) can evidently generate these. 1048 * This causes kernel to core dump. 1049 * for compatibility, If we see this, point to a safe address. 1050 */ 1051 if (sa->sa_len == 0) { 1052 rtinfo->rti_info[i] = &sa_zero; 1053 return (0); /* should be EINVAL but for compat */ 1054 } 1055 /* accept it */ 1056#ifdef INET6 1057 if (sa->sa_family == AF_INET6) 1058 sa6_embedscope((struct sockaddr_in6 *)sa, 1059 V_ip6_use_defzone); 1060#endif 1061 rtinfo->rti_info[i] = sa; 1062 cp += SA_SIZE(sa); 1063 } 1064 return (0); 1065} 1066 1067/* 1068 * Used by the routing socket. 1069 */ 1070static struct mbuf * 1071rt_msg1(int type, struct rt_addrinfo *rtinfo) 1072{ 1073 struct rt_msghdr *rtm; 1074 struct mbuf *m; 1075 int i; 1076 struct sockaddr *sa; 1077#ifdef INET6 1078 struct sockaddr_storage ss; 1079 struct sockaddr_in6 *sin6; 1080#endif 1081 int len, dlen; 1082 1083 switch (type) { 1084 1085 case RTM_DELADDR: 1086 case RTM_NEWADDR: 1087 len = sizeof(struct ifa_msghdr); 1088 break; 1089 1090 case RTM_DELMADDR: 1091 case RTM_NEWMADDR: 1092 len = sizeof(struct ifma_msghdr); 1093 break; 1094 1095 case RTM_IFINFO: 1096 len = sizeof(struct if_msghdr); 1097 break; 1098 1099 case RTM_IFANNOUNCE: 1100 case RTM_IEEE80211: 1101 len = sizeof(struct if_announcemsghdr); 1102 break; 1103 1104 default: 1105 len = sizeof(struct rt_msghdr); 1106 } 1107 1108 /* XXXGL: can we use MJUMPAGESIZE cluster here? */ 1109 KASSERT(len <= MCLBYTES, ("%s: message too big", __func__)); 1110 if (len > MHLEN) 1111 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1112 else 1113 m = m_gethdr(M_NOWAIT, MT_DATA); 1114 if (m == NULL) 1115 return (m); 1116 1117 m->m_pkthdr.len = m->m_len = len; 1118 rtm = mtod(m, struct rt_msghdr *); 1119 bzero((caddr_t)rtm, len); 1120 for (i = 0; i < RTAX_MAX; i++) { 1121 if ((sa = rtinfo->rti_info[i]) == NULL) 1122 continue; 1123 rtinfo->rti_addrs |= (1 << i); 1124 dlen = SA_SIZE(sa); 1125#ifdef INET6 1126 if (V_deembed_scopeid && sa->sa_family == AF_INET6) { 1127 sin6 = (struct sockaddr_in6 *)&ss; 1128 bcopy(sa, sin6, sizeof(*sin6)); 1129 if (sa6_recoverscope(sin6) == 0) 1130 sa = (struct sockaddr *)sin6; 1131 } 1132#endif 1133 m_copyback(m, len, dlen, (caddr_t)sa); 1134 len += dlen; 1135 } 1136 if (m->m_pkthdr.len != len) { 1137 m_freem(m); 1138 return (NULL); 1139 } 1140 rtm->rtm_msglen = len; 1141 rtm->rtm_version = RTM_VERSION; 1142 rtm->rtm_type = type; 1143 return (m); 1144} 1145 1146/* 1147 * Used by the sysctl code and routing socket. 1148 */ 1149static int 1150rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w) 1151{ 1152 int i; 1153 int len, dlen, second_time = 0; 1154 caddr_t cp0; 1155#ifdef INET6 1156 struct sockaddr_storage ss; 1157 struct sockaddr_in6 *sin6; 1158#endif 1159 1160 rtinfo->rti_addrs = 0; 1161again: 1162 switch (type) { 1163 1164 case RTM_DELADDR: 1165 case RTM_NEWADDR: 1166 if (w != NULL && w->w_op == NET_RT_IFLISTL) { 1167#ifdef COMPAT_FREEBSD32 1168 if (w->w_req->flags & SCTL_MASK32) 1169 len = sizeof(struct ifa_msghdrl32); 1170 else 1171#endif 1172 len = sizeof(struct ifa_msghdrl); 1173 } else 1174 len = sizeof(struct ifa_msghdr); 1175 break; 1176 1177 case RTM_IFINFO: 1178#ifdef COMPAT_FREEBSD32 1179 if (w != NULL && w->w_req->flags & SCTL_MASK32) { 1180 if (w->w_op == NET_RT_IFLISTL) 1181 len = sizeof(struct if_msghdrl32); 1182 else 1183 len = sizeof(struct if_msghdr32); 1184 break; 1185 } 1186#endif 1187 if (w != NULL && w->w_op == NET_RT_IFLISTL) 1188 len = sizeof(struct if_msghdrl); 1189 else 1190 len = sizeof(struct if_msghdr); 1191 break; 1192 1193 case RTM_NEWMADDR: 1194 len = sizeof(struct ifma_msghdr); 1195 break; 1196 1197 default: 1198 len = sizeof(struct rt_msghdr); 1199 } 1200 cp0 = cp; 1201 if (cp0) 1202 cp += len; 1203 for (i = 0; i < RTAX_MAX; i++) { 1204 struct sockaddr *sa; 1205 1206 if ((sa = rtinfo->rti_info[i]) == NULL) 1207 continue; 1208 rtinfo->rti_addrs |= (1 << i); 1209 dlen = SA_SIZE(sa); 1210 if (cp) { 1211#ifdef INET6 1212 if (V_deembed_scopeid && sa->sa_family == AF_INET6) { 1213 sin6 = (struct sockaddr_in6 *)&ss; 1214 bcopy(sa, sin6, sizeof(*sin6)); 1215 if (sa6_recoverscope(sin6) == 0) 1216 sa = (struct sockaddr *)sin6; 1217 } 1218#endif 1219 bcopy((caddr_t)sa, cp, (unsigned)dlen); 1220 cp += dlen; 1221 } 1222 len += dlen; 1223 } 1224 len = ALIGN(len); 1225 if (cp == NULL && w != NULL && !second_time) { 1226 struct walkarg *rw = w; 1227 1228 if (rw->w_req) { 1229 if (rw->w_tmemsize < len) { 1230 if (rw->w_tmem) 1231 free(rw->w_tmem, M_RTABLE); 1232 rw->w_tmem = (caddr_t) 1233 malloc(len, M_RTABLE, M_NOWAIT); 1234 if (rw->w_tmem) 1235 rw->w_tmemsize = len; 1236 } 1237 if (rw->w_tmem) { 1238 cp = rw->w_tmem; 1239 second_time = 1; 1240 goto again; 1241 } 1242 } 1243 } 1244 if (cp) { 1245 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 1246 1247 rtm->rtm_version = RTM_VERSION; 1248 rtm->rtm_type = type; 1249 rtm->rtm_msglen = len; 1250 } 1251 return (len); 1252} 1253 1254/* 1255 * This routine is called to generate a message from the routing 1256 * socket indicating that a redirect has occured, a routing lookup 1257 * has failed, or that a protocol has detected timeouts to a particular 1258 * destination. 1259 */ 1260void 1261rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, 1262 int fibnum) 1263{ 1264 struct rt_msghdr *rtm; 1265 struct mbuf *m; 1266 struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 1267 1268 if (route_cb.any_count == 0) 1269 return; 1270 m = rt_msg1(type, rtinfo); 1271 if (m == NULL) 1272 return; 1273 1274 if (fibnum != RT_ALL_FIBS) { 1275 KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " 1276 "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); 1277 M_SETFIB(m, fibnum); 1278 m->m_flags |= RTS_FILTER_FIB; 1279 } 1280 1281 rtm = mtod(m, struct rt_msghdr *); 1282 rtm->rtm_flags = RTF_DONE | flags; 1283 rtm->rtm_errno = error; 1284 rtm->rtm_addrs = rtinfo->rti_addrs; 1285 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1286} 1287 1288void 1289rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 1290{ 1291 1292 rt_missmsg_fib(type, rtinfo, flags, error, RT_ALL_FIBS); 1293} 1294 1295/* 1296 * This routine is called to generate a message from the routing 1297 * socket indicating that the status of a network interface has changed. 1298 */ 1299void 1300rt_ifmsg(struct ifnet *ifp) 1301{ 1302 struct if_msghdr *ifm; 1303 struct mbuf *m; 1304 struct rt_addrinfo info; 1305 1306 if (route_cb.any_count == 0) 1307 return; 1308 bzero((caddr_t)&info, sizeof(info)); 1309 m = rt_msg1(RTM_IFINFO, &info); 1310 if (m == NULL) 1311 return; 1312 ifm = mtod(m, struct if_msghdr *); 1313 ifm->ifm_index = ifp->if_index; 1314 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1315 ifm->ifm_data = ifp->if_data; 1316 ifm->ifm_addrs = 0; 1317 rt_dispatch(m, AF_UNSPEC); 1318} 1319 1320/* 1321 * Announce interface address arrival/withdraw. 1322 * Please do not call directly, use rt_addrmsg(). 1323 * Assume input data to be valid. 1324 * Returns 0 on success. 1325 */ 1326int 1327rtsock_addrmsg(int cmd, struct ifaddr *ifa, int fibnum) 1328{ 1329 struct rt_addrinfo info; 1330 struct sockaddr *sa; 1331 int ncmd; 1332 struct mbuf *m; 1333 struct ifa_msghdr *ifam; 1334 struct ifnet *ifp = ifa->ifa_ifp; 1335 1336 if (route_cb.any_count == 0) 1337 return (0); 1338 1339 ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 1340 1341 bzero((caddr_t)&info, sizeof(info)); 1342 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 1343 info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; 1344 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1345 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1346 if ((m = rt_msg1(ncmd, &info)) == NULL) 1347 return (ENOBUFS); 1348 ifam = mtod(m, struct ifa_msghdr *); 1349 ifam->ifam_index = ifp->if_index; 1350 ifam->ifam_metric = ifa->ifa_metric; 1351 ifam->ifam_flags = ifa->ifa_flags; 1352 ifam->ifam_addrs = info.rti_addrs; 1353 1354 if (fibnum != RT_ALL_FIBS) { 1355 M_SETFIB(m, fibnum); 1356 m->m_flags |= RTS_FILTER_FIB; 1357 } 1358 1359 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1360 1361 return (0); 1362} 1363 1364/* 1365 * Announce route addition/removal. 1366 * Please do not call directly, use rt_routemsg(). 1367 * Note that @rt data MAY be inconsistent/invalid: 1368 * if some userland app sends us "invalid" route message (invalid mask, 1369 * no dst, wrong address families, etc...) we need to pass it back 1370 * to app (and any other rtsock consumers) with rtm_errno field set to 1371 * non-zero value. 1372 * 1373 * Returns 0 on success. 1374 */ 1375int 1376rtsock_routemsg(int cmd, struct ifnet *ifp, int error, struct rtentry *rt, 1377 int fibnum) 1378{ 1379 struct rt_addrinfo info; 1380 struct sockaddr *sa; 1381 struct mbuf *m; 1382 struct rt_msghdr *rtm; 1383 1384 if (route_cb.any_count == 0) 1385 return (0); 1386 1387 bzero((caddr_t)&info, sizeof(info)); 1388 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1389 info.rti_info[RTAX_DST] = sa = rt_key(rt); 1390 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1391 if ((m = rt_msg1(cmd, &info)) == NULL) 1392 return (ENOBUFS); 1393 rtm = mtod(m, struct rt_msghdr *); 1394 rtm->rtm_index = ifp->if_index; 1395 rtm->rtm_flags |= rt->rt_flags; 1396 rtm->rtm_errno = error; 1397 rtm->rtm_addrs = info.rti_addrs; 1398 1399 if (fibnum != RT_ALL_FIBS) { 1400 M_SETFIB(m, fibnum); 1401 m->m_flags |= RTS_FILTER_FIB; 1402 } 1403 1404 rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); 1405 1406 return (0); 1407} 1408 1409/* 1410 * This is the analogue to the rt_newaddrmsg which performs the same 1411 * function but for multicast group memberhips. This is easier since 1412 * there is no route state to worry about. 1413 */ 1414void 1415rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) 1416{ 1417 struct rt_addrinfo info; 1418 struct mbuf *m = NULL; 1419 struct ifnet *ifp = ifma->ifma_ifp; 1420 struct ifma_msghdr *ifmam; 1421 1422 if (route_cb.any_count == 0) 1423 return; 1424 1425 bzero((caddr_t)&info, sizeof(info)); 1426 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1427 info.rti_info[RTAX_IFP] = ifp ? ifp->if_addr->ifa_addr : NULL; 1428 /* 1429 * If a link-layer address is present, present it as a ``gateway'' 1430 * (similarly to how ARP entries, e.g., are presented). 1431 */ 1432 info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr; 1433 m = rt_msg1(cmd, &info); 1434 if (m == NULL) 1435 return; 1436 ifmam = mtod(m, struct ifma_msghdr *); 1437 KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n", 1438 __func__)); 1439 ifmam->ifmam_index = ifp->if_index; 1440 ifmam->ifmam_addrs = info.rti_addrs; 1441 rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); 1442} 1443 1444static struct mbuf * 1445rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 1446 struct rt_addrinfo *info) 1447{ 1448 struct if_announcemsghdr *ifan; 1449 struct mbuf *m; 1450 1451 if (route_cb.any_count == 0) 1452 return NULL; 1453 bzero((caddr_t)info, sizeof(*info)); 1454 m = rt_msg1(type, info); 1455 if (m != NULL) { 1456 ifan = mtod(m, struct if_announcemsghdr *); 1457 ifan->ifan_index = ifp->if_index; 1458 strlcpy(ifan->ifan_name, ifp->if_xname, 1459 sizeof(ifan->ifan_name)); 1460 ifan->ifan_what = what; 1461 } 1462 return m; 1463} 1464 1465/* 1466 * This is called to generate routing socket messages indicating 1467 * IEEE80211 wireless events. 1468 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 1469 */ 1470void 1471rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 1472{ 1473 struct mbuf *m; 1474 struct rt_addrinfo info; 1475 1476 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 1477 if (m != NULL) { 1478 /* 1479 * Append the ieee80211 data. Try to stick it in the 1480 * mbuf containing the ifannounce msg; otherwise allocate 1481 * a new mbuf and append. 1482 * 1483 * NB: we assume m is a single mbuf. 1484 */ 1485 if (data_len > M_TRAILINGSPACE(m)) { 1486 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 1487 if (n == NULL) { 1488 m_freem(m); 1489 return; 1490 } 1491 bcopy(data, mtod(n, void *), data_len); 1492 n->m_len = data_len; 1493 m->m_next = n; 1494 } else if (data_len > 0) { 1495 bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len); 1496 m->m_len += data_len; 1497 } 1498 if (m->m_flags & M_PKTHDR) 1499 m->m_pkthdr.len += data_len; 1500 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 1501 rt_dispatch(m, AF_UNSPEC); 1502 } 1503} 1504 1505/* 1506 * This is called to generate routing socket messages indicating 1507 * network interface arrival and departure. 1508 */ 1509void 1510rt_ifannouncemsg(struct ifnet *ifp, int what) 1511{ 1512 struct mbuf *m; 1513 struct rt_addrinfo info; 1514 1515 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 1516 if (m != NULL) 1517 rt_dispatch(m, AF_UNSPEC); 1518} 1519 1520static void 1521rt_dispatch(struct mbuf *m, sa_family_t saf) 1522{ 1523 struct m_tag *tag; 1524 1525 /* 1526 * Preserve the family from the sockaddr, if any, in an m_tag for 1527 * use when injecting the mbuf into the routing socket buffer from 1528 * the netisr. 1529 */ 1530 if (saf != AF_UNSPEC) { 1531 tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), 1532 M_NOWAIT); 1533 if (tag == NULL) { 1534 m_freem(m); 1535 return; 1536 } 1537 *(unsigned short *)(tag + 1) = saf; 1538 m_tag_prepend(m, tag); 1539 } 1540#ifdef VIMAGE 1541 if (V_loif) 1542 m->m_pkthdr.rcvif = V_loif; 1543 else { 1544 m_freem(m); 1545 return; 1546 } 1547#endif 1548 netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */ 1549} 1550 1551/* 1552 * This is used in dumping the kernel table via sysctl(). 1553 */ 1554static int 1555sysctl_dumpentry(struct radix_node *rn, void *vw) 1556{ 1557 struct walkarg *w = vw; 1558 struct rtentry *rt = (struct rtentry *)rn; 1559 int error = 0, size; 1560 struct rt_addrinfo info; 1561 1562 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1563 return 0; 1564 if ((rt->rt_flags & RTF_HOST) == 0 1565 ? jailed_without_vnet(w->w_req->td->td_ucred) 1566 : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0) 1567 return (0); 1568 bzero((caddr_t)&info, sizeof(info)); 1569 info.rti_info[RTAX_DST] = rt_key(rt); 1570 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1571 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 1572 info.rti_info[RTAX_GENMASK] = 0; 1573 if (rt->rt_ifp) { 1574 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; 1575 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 1576 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1577 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; 1578 } 1579 size = rt_msg2(RTM_GET, &info, NULL, w); 1580 if (w->w_req && w->w_tmem) { 1581 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 1582 1583 if (rt->rt_flags & RTF_GWFLAG_COMPAT) 1584 rtm->rtm_flags = RTF_GATEWAY | 1585 (rt->rt_flags & ~RTF_GWFLAG_COMPAT); 1586 else 1587 rtm->rtm_flags = rt->rt_flags; 1588 rt_getmetrics(rt, &rtm->rtm_rmx); 1589 rtm->rtm_index = rt->rt_ifp->if_index; 1590 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1591 rtm->rtm_addrs = info.rti_addrs; 1592 error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size); 1593 return (error); 1594 } 1595 return (error); 1596} 1597 1598#ifdef COMPAT_FREEBSD32 1599static void 1600copy_ifdata32(struct if_data *src, struct if_data32 *dst) 1601{ 1602 1603 bzero(dst, sizeof(*dst)); 1604 CP(*src, *dst, ifi_type); 1605 CP(*src, *dst, ifi_physical); 1606 CP(*src, *dst, ifi_addrlen); 1607 CP(*src, *dst, ifi_hdrlen); 1608 CP(*src, *dst, ifi_link_state); 1609 CP(*src, *dst, ifi_vhid); 1610 CP(*src, *dst, ifi_baudrate_pf); 1611 dst->ifi_datalen = sizeof(struct if_data32); 1612 CP(*src, *dst, ifi_mtu); 1613 CP(*src, *dst, ifi_metric); 1614 CP(*src, *dst, ifi_baudrate); 1615 CP(*src, *dst, ifi_ipackets); 1616 CP(*src, *dst, ifi_ierrors); 1617 CP(*src, *dst, ifi_opackets); 1618 CP(*src, *dst, ifi_oerrors); 1619 CP(*src, *dst, ifi_collisions); 1620 CP(*src, *dst, ifi_ibytes); 1621 CP(*src, *dst, ifi_obytes); 1622 CP(*src, *dst, ifi_imcasts); 1623 CP(*src, *dst, ifi_omcasts); 1624 CP(*src, *dst, ifi_iqdrops); 1625 CP(*src, *dst, ifi_noproto); 1626 CP(*src, *dst, ifi_hwassist); 1627 CP(*src, *dst, ifi_epoch); 1628 TV_CP(*src, *dst, ifi_lastchange); 1629} 1630#endif 1631 1632static int 1633sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info, 1634 struct walkarg *w, int len) 1635{ 1636 struct if_msghdrl *ifm; 1637 1638#ifdef COMPAT_FREEBSD32 1639 if (w->w_req->flags & SCTL_MASK32) { 1640 struct if_msghdrl32 *ifm32; 1641 1642 ifm32 = (struct if_msghdrl32 *)w->w_tmem; 1643 ifm32->ifm_addrs = info->rti_addrs; 1644 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1645 ifm32->ifm_index = ifp->if_index; 1646 ifm32->_ifm_spare1 = 0; 1647 ifm32->ifm_len = sizeof(*ifm32); 1648 ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); 1649 1650 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1651 /* Fixup if_data carp(4) vhid. */ 1652 if (carp_get_vhid_p != NULL) 1653 ifm32->ifm_data.ifi_vhid = 1654 (*carp_get_vhid_p)(ifp->if_addr); 1655 ifm32->ifm_data.ifi_oqdrops = ifp->if_snd.ifq_drops; 1656 1657 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1658 } 1659#endif 1660 ifm = (struct if_msghdrl *)w->w_tmem; 1661 ifm->ifm_addrs = info->rti_addrs; 1662 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1663 ifm->ifm_index = ifp->if_index; 1664 ifm->_ifm_spare1 = 0; 1665 ifm->ifm_len = sizeof(*ifm); 1666 ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); 1667 1668 ifm->ifm_data = ifp->if_data; 1669 /* Fixup if_data carp(4) vhid. */ 1670 if (carp_get_vhid_p != NULL) 1671 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1672 1673 ifm->ifm_data.ifi_datalen += sizeof(u_long); 1674 ifm->ifi_oqdrops = ifp->if_snd.ifq_drops; 1675 1676 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1677} 1678 1679static int 1680sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info, 1681 struct walkarg *w, int len) 1682{ 1683 struct if_msghdr *ifm; 1684 1685#ifdef COMPAT_FREEBSD32 1686 if (w->w_req->flags & SCTL_MASK32) { 1687 struct if_msghdr32 *ifm32; 1688 1689 ifm32 = (struct if_msghdr32 *)w->w_tmem; 1690 ifm32->ifm_addrs = info->rti_addrs; 1691 ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1692 ifm32->ifm_index = ifp->if_index; 1693 1694 copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); 1695 /* Fixup if_data carp(4) vhid. */ 1696 if (carp_get_vhid_p != NULL) 1697 ifm32->ifm_data.ifi_vhid = 1698 (*carp_get_vhid_p)(ifp->if_addr); 1699 1700 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); 1701 } 1702#endif 1703 ifm = (struct if_msghdr *)w->w_tmem; 1704 ifm->ifm_addrs = info->rti_addrs; 1705 ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; 1706 ifm->ifm_index = ifp->if_index; 1707 1708 ifm->ifm_data = ifp->if_data; 1709 /* Fixup if_data carp(4) vhid. */ 1710 if (carp_get_vhid_p != NULL) 1711 ifm->ifm_data.ifi_vhid = (*carp_get_vhid_p)(ifp->if_addr); 1712 1713 return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); 1714} 1715 1716static int 1717sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, 1718 struct walkarg *w, int len) 1719{ 1720 struct ifa_msghdrl *ifam; 1721 1722#ifdef COMPAT_FREEBSD32 1723 if (w->w_req->flags & SCTL_MASK32) { 1724 struct ifa_msghdrl32 *ifam32; 1725 1726 ifam32 = (struct ifa_msghdrl32 *)w->w_tmem; 1727 ifam32->ifam_addrs = info->rti_addrs; 1728 ifam32->ifam_flags = ifa->ifa_flags; 1729 ifam32->ifam_index = ifa->ifa_ifp->if_index; 1730 ifam32->_ifam_spare1 = 0; 1731 ifam32->ifam_len = sizeof(*ifam32); 1732 ifam32->ifam_data_off = 1733 offsetof(struct ifa_msghdrl32, ifam_data); 1734 ifam32->ifam_metric = ifa->ifa_metric; 1735 1736 copy_ifdata32(&ifa->ifa_ifp->if_data, &ifam32->ifam_data); 1737 /* Fixup if_data carp(4) vhid. */ 1738 if (carp_get_vhid_p != NULL) 1739 ifam32->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1740 1741 return (SYSCTL_OUT(w->w_req, (caddr_t)ifam32, len)); 1742 } 1743#endif 1744 1745 ifam = (struct ifa_msghdrl *)w->w_tmem; 1746 ifam->ifam_addrs = info->rti_addrs; 1747 ifam->ifam_flags = ifa->ifa_flags; 1748 ifam->ifam_index = ifa->ifa_ifp->if_index; 1749 ifam->_ifam_spare1 = 0; 1750 ifam->ifam_len = sizeof(*ifam); 1751 ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); 1752 ifam->ifam_metric = ifa->ifa_metric; 1753 1754 ifam->ifam_data = ifa->if_data; 1755 /* Fixup if_data carp(4) vhid. */ 1756 if (carp_get_vhid_p != NULL) 1757 ifam->ifam_data.ifi_vhid = (*carp_get_vhid_p)(ifa); 1758 1759 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1760} 1761 1762static int 1763sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, 1764 struct walkarg *w, int len) 1765{ 1766 struct ifa_msghdr *ifam; 1767 1768 ifam = (struct ifa_msghdr *)w->w_tmem; 1769 ifam->ifam_addrs = info->rti_addrs; 1770 ifam->ifam_flags = ifa->ifa_flags; 1771 ifam->ifam_index = ifa->ifa_ifp->if_index; 1772 ifam->ifam_metric = ifa->ifa_metric; 1773 1774 return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); 1775} 1776 1777static int 1778sysctl_iflist(int af, struct walkarg *w) 1779{ 1780 struct ifnet *ifp; 1781 struct ifaddr *ifa; 1782 struct rt_addrinfo info; 1783 int len, error = 0; 1784 1785 bzero((caddr_t)&info, sizeof(info)); 1786 IFNET_RLOCK_NOSLEEP(); 1787 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1788 if (w->w_arg && w->w_arg != ifp->if_index) 1789 continue; 1790 IF_ADDR_RLOCK(ifp); 1791 ifa = ifp->if_addr; 1792 info.rti_info[RTAX_IFP] = ifa->ifa_addr; 1793 len = rt_msg2(RTM_IFINFO, &info, NULL, w); 1794 info.rti_info[RTAX_IFP] = NULL; 1795 if (w->w_req && w->w_tmem) { 1796 if (w->w_op == NET_RT_IFLISTL) 1797 error = sysctl_iflist_ifml(ifp, &info, w, len); 1798 else 1799 error = sysctl_iflist_ifm(ifp, &info, w, len); 1800 if (error) 1801 goto done; 1802 } 1803 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) { 1804 if (af && af != ifa->ifa_addr->sa_family) 1805 continue; 1806 if (prison_if(w->w_req->td->td_ucred, 1807 ifa->ifa_addr) != 0) 1808 continue; 1809 info.rti_info[RTAX_IFA] = ifa->ifa_addr; 1810 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 1811 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 1812 len = rt_msg2(RTM_NEWADDR, &info, NULL, w); 1813 if (w->w_req && w->w_tmem) { 1814 if (w->w_op == NET_RT_IFLISTL) 1815 error = sysctl_iflist_ifaml(ifa, &info, 1816 w, len); 1817 else 1818 error = sysctl_iflist_ifam(ifa, &info, 1819 w, len); 1820 if (error) 1821 goto done; 1822 } 1823 } 1824 IF_ADDR_RUNLOCK(ifp); 1825 info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = 1826 info.rti_info[RTAX_BRD] = NULL; 1827 } 1828done: 1829 if (ifp != NULL) 1830 IF_ADDR_RUNLOCK(ifp); 1831 IFNET_RUNLOCK_NOSLEEP(); 1832 return (error); 1833} 1834 1835static int 1836sysctl_ifmalist(int af, struct walkarg *w) 1837{ 1838 struct ifnet *ifp; 1839 struct ifmultiaddr *ifma; 1840 struct rt_addrinfo info; 1841 int len, error = 0; 1842 struct ifaddr *ifa; 1843 1844 bzero((caddr_t)&info, sizeof(info)); 1845 IFNET_RLOCK_NOSLEEP(); 1846 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1847 if (w->w_arg && w->w_arg != ifp->if_index) 1848 continue; 1849 ifa = ifp->if_addr; 1850 info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; 1851 IF_ADDR_RLOCK(ifp); 1852 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1853 if (af && af != ifma->ifma_addr->sa_family) 1854 continue; 1855 if (prison_if(w->w_req->td->td_ucred, 1856 ifma->ifma_addr) != 0) 1857 continue; 1858 info.rti_info[RTAX_IFA] = ifma->ifma_addr; 1859 info.rti_info[RTAX_GATEWAY] = 1860 (ifma->ifma_addr->sa_family != AF_LINK) ? 1861 ifma->ifma_lladdr : NULL; 1862 len = rt_msg2(RTM_NEWMADDR, &info, NULL, w); 1863 if (w->w_req && w->w_tmem) { 1864 struct ifma_msghdr *ifmam; 1865 1866 ifmam = (struct ifma_msghdr *)w->w_tmem; 1867 ifmam->ifmam_index = ifma->ifma_ifp->if_index; 1868 ifmam->ifmam_flags = 0; 1869 ifmam->ifmam_addrs = info.rti_addrs; 1870 error = SYSCTL_OUT(w->w_req, w->w_tmem, len); 1871 if (error) { 1872 IF_ADDR_RUNLOCK(ifp); 1873 goto done; 1874 } 1875 } 1876 } 1877 IF_ADDR_RUNLOCK(ifp); 1878 } 1879done: 1880 IFNET_RUNLOCK_NOSLEEP(); 1881 return (error); 1882} 1883 1884static int 1885sysctl_rtsock(SYSCTL_HANDLER_ARGS) 1886{ 1887 int *name = (int *)arg1; 1888 u_int namelen = arg2; 1889 struct radix_node_head *rnh = NULL; /* silence compiler. */ 1890 int i, lim, error = EINVAL; 1891 int fib = 0; 1892 u_char af; 1893 struct walkarg w; 1894 1895 name ++; 1896 namelen--; 1897 if (req->newptr) 1898 return (EPERM); 1899 if (name[1] == NET_RT_DUMP) { 1900 if (namelen == 3) 1901 fib = req->td->td_proc->p_fibnum; 1902 else if (namelen == 4) 1903 fib = (name[3] == RT_ALL_FIBS) ? 1904 req->td->td_proc->p_fibnum : name[3]; 1905 else 1906 return ((namelen < 3) ? EISDIR : ENOTDIR); 1907 if (fib < 0 || fib >= rt_numfibs) 1908 return (EINVAL); 1909 } else if (namelen != 3) 1910 return ((namelen < 3) ? EISDIR : ENOTDIR); 1911 af = name[0]; 1912 if (af > AF_MAX) 1913 return (EINVAL); 1914 bzero(&w, sizeof(w)); 1915 w.w_op = name[1]; 1916 w.w_arg = name[2]; 1917 w.w_req = req; 1918 1919 error = sysctl_wire_old_buffer(req, 0); 1920 if (error) 1921 return (error); 1922 switch (w.w_op) { 1923 1924 case NET_RT_DUMP: 1925 case NET_RT_FLAGS: 1926 if (af == 0) { /* dump all tables */ 1927 i = 1; 1928 lim = AF_MAX; 1929 } else /* dump only one table */ 1930 i = lim = af; 1931 1932 /* 1933 * take care of llinfo entries, the caller must 1934 * specify an AF 1935 */ 1936 if (w.w_op == NET_RT_FLAGS && 1937 (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) { 1938 if (af != 0) 1939 error = lltable_sysctl_dumparp(af, w.w_req); 1940 else 1941 error = EINVAL; 1942 break; 1943 } 1944 /* 1945 * take care of routing entries 1946 */ 1947 for (error = 0; error == 0 && i <= lim; i++) { 1948 rnh = rt_tables_get_rnh(fib, i); 1949 if (rnh != NULL) { 1950 RADIX_NODE_HEAD_RLOCK(rnh); 1951 error = rnh->rnh_walktree(rnh, 1952 sysctl_dumpentry, &w); 1953 RADIX_NODE_HEAD_RUNLOCK(rnh); 1954 } else if (af != 0) 1955 error = EAFNOSUPPORT; 1956 } 1957 break; 1958 1959 case NET_RT_IFLIST: 1960 case NET_RT_IFLISTL: 1961 error = sysctl_iflist(af, &w); 1962 break; 1963 1964 case NET_RT_IFMALIST: 1965 error = sysctl_ifmalist(af, &w); 1966 break; 1967 } 1968 if (w.w_tmem) 1969 free(w.w_tmem, M_RTABLE); 1970 return (error); 1971} 1972 1973static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); 1974 1975/* 1976 * Definitions of protocols supported in the ROUTE domain. 1977 */ 1978 1979static struct domain routedomain; /* or at least forward */ 1980 1981static struct protosw routesw[] = { 1982{ 1983 .pr_type = SOCK_RAW, 1984 .pr_domain = &routedomain, 1985 .pr_flags = PR_ATOMIC|PR_ADDR, 1986 .pr_output = route_output, 1987 .pr_ctlinput = raw_ctlinput, 1988 .pr_init = raw_init, 1989 .pr_usrreqs = &route_usrreqs 1990} 1991}; 1992 1993static struct domain routedomain = { 1994 .dom_family = PF_ROUTE, 1995 .dom_name = "route", 1996 .dom_protosw = routesw, 1997 .dom_protoswNPROTOSW = &routesw[sizeof(routesw)/sizeof(routesw[0])] 1998}; 1999 2000VNET_DOMAIN_SET(route); 2001