1 /* $NetBSD: rtsock.c,v 1.101 2008/04/24 11:38:37 ad Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1988, 1991, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: rtsock.c,v 1.101 2008/04/24 11:38:37 ad Exp $"); 65 66 #include "opt_inet.h" 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/proc.h> 71 #include <sys/mbuf.h> 72 #include <sys/socket.h> 73 #include <sys/socketvar.h> 74 #include <sys/domain.h> 75 #include <sys/protosw.h> 76 #include <sys/sysctl.h> 77 #include <sys/kauth.h> 78 #include <sys/intr.h> 79 #ifdef RTSOCK_DEBUG 80 #include <netinet/in.h> 81 #endif /* RTSOCK_DEBUG */ 82 83 #include <net/if.h> 84 #include <net/route.h> 85 #include <net/raw_cb.h> 86 87 #include <machine/stdarg.h> 88 89 DOMAIN_DEFINE(routedomain); /* forward declare and add to link set */ 90 91 struct sockaddr route_dst = { .sa_len = 2, .sa_family = PF_ROUTE, }; 92 struct sockaddr route_src = { .sa_len = 2, .sa_family = PF_ROUTE, }; 93 94 int route_maxqlen = IFQ_MAXLEN; 95 static struct ifqueue route_intrq; 96 static void *route_sih; 97 98 struct walkarg { 99 int w_op; 100 int w_arg; 101 int w_given; 102 int w_needed; 103 void * w_where; 104 int w_tmemsize; 105 int w_tmemneeded; 106 void * w_tmem; 107 }; 108 109 static struct mbuf *rt_msg1(int, struct rt_addrinfo *, void *, int); 110 static int rt_msg2(int, struct rt_addrinfo *, void *, struct walkarg *, int *); 111 static int rt_xaddrs(u_char, const char *, const char *, struct rt_addrinfo *); 112 static struct mbuf *rt_makeifannouncemsg(struct ifnet *, int, int, 113 struct rt_addrinfo *); 114 static int sysctl_dumpentry(struct rtentry *, void *); 115 static int sysctl_iflist(int, struct walkarg *, int); 116 static int sysctl_rtable(SYSCTLFN_PROTO); 117 static inline void rt_adjustcount(int, int); 118 static void route_enqueue(struct mbuf *, int); 119 120 /* Sleazy use of local variables throughout file, warning!!!! */ 121 #define dst info.rti_info[RTAX_DST] 122 #define gate info.rti_info[RTAX_GATEWAY] 123 #define netmask info.rti_info[RTAX_NETMASK] 124 #define ifpaddr info.rti_info[RTAX_IFP] 125 #define ifaaddr info.rti_info[RTAX_IFA] 126 #define brdaddr info.rti_info[RTAX_BRD] 127 128 static inline void 129 rt_adjustcount(int af, int cnt) 130 { 131 route_cb.any_count += cnt; 132 switch (af) { 133 case AF_INET: 134 route_cb.ip_count += cnt; 135 return; 136 #ifdef INET6 137 case AF_INET6: 138 route_cb.ip6_count += cnt; 139 return; 140 #endif 141 case AF_IPX: 142 route_cb.ipx_count += cnt; 143 return; 144 case AF_NS: 145 route_cb.ns_count += cnt; 146 return; 147 case AF_ISO: 148 route_cb.iso_count += cnt; 149 return; 150 } 151 } 152 153 /*ARGSUSED*/ 154 int 155 route_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, 156 struct mbuf *control, struct lwp *l) 157 { 158 int error = 0; 159 struct rawcb *rp = sotorawcb(so); 160 int s; 161 162 if (req == PRU_ATTACH) { 163 sosetlock(so); 164 MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); 165 if ((so->so_pcb = rp) != NULL) 166 memset(so->so_pcb, 0, sizeof(*rp)); 167 168 } 169 if (req == PRU_DETACH && rp) 170 rt_adjustcount(rp->rcb_proto.sp_protocol, -1); 171 s = splsoftnet(); 172 173 /* 174 * Don't call raw_usrreq() in the attach case, because 175 * we want to allow non-privileged processes to listen on 176 * and send "safe" commands to the routing socket. 177 */ 178 if (req == PRU_ATTACH) { 179 if (l == NULL) 180 error = EACCES; 181 else 182 error = raw_attach(so, (int)(long)nam); 183 } else 184 error = raw_usrreq(so, req, m, nam, control, l); 185 186 rp = sotorawcb(so); 187 if (req == PRU_ATTACH && rp) { 188 if (error) { 189 free((void *)rp, M_PCB); 190 splx(s); 191 return error; 192 } 193 rt_adjustcount(rp->rcb_proto.sp_protocol, 1); 194 rp->rcb_laddr = &route_src; 195 rp->rcb_faddr = &route_dst; 196 soisconnected(so); 197 so->so_options |= SO_USELOOPBACK; 198 } 199 splx(s); 200 return error; 201 } 202 203 static const struct sockaddr * 204 intern_netmask(const struct sockaddr *mask) 205 { 206 struct radix_node *rn; 207 extern struct radix_node_head *mask_rnhead; 208 209 if (mask != NULL && 210 (rn = rn_search(mask, mask_rnhead->rnh_treetop))) 211 mask = (const struct sockaddr *)rn->rn_key; 212 213 return mask; 214 } 215 216 /*ARGSUSED*/ 217 int 218 route_output(struct mbuf *m, ...) 219 { 220 struct sockproto proto = { .sp_family = PF_ROUTE, }; 221 struct rt_msghdr *rtm = NULL; 222 struct rtentry *rt = NULL; 223 struct rtentry *saved_nrt = NULL; 224 struct rt_addrinfo info; 225 int len, error = 0; 226 struct ifnet *ifp = NULL; 227 struct ifaddr *ifa = NULL; 228 struct socket *so; 229 va_list ap; 230 sa_family_t family; 231 232 va_start(ap, m); 233 so = va_arg(ap, struct socket *); 234 va_end(ap); 235 236 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0) 237 if (m == NULL || ((m->m_len < sizeof(int32_t)) && 238 (m = m_pullup(m, sizeof(int32_t))) == NULL)) 239 return ENOBUFS; 240 if ((m->m_flags & M_PKTHDR) == 0) 241 panic("route_output"); 242 len = m->m_pkthdr.len; 243 if (len < sizeof(*rtm) || 244 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 245 dst = NULL; 246 senderr(EINVAL); 247 } 248 R_Malloc(rtm, struct rt_msghdr *, len); 249 if (rtm == NULL) { 250 dst = NULL; 251 senderr(ENOBUFS); 252 } 253 m_copydata(m, 0, len, (void *)rtm); 254 if (rtm->rtm_version != RTM_VERSION) { 255 dst = NULL; 256 senderr(EPROTONOSUPPORT); 257 } 258 rtm->rtm_pid = curproc->p_pid; 259 memset(&info, 0, sizeof(info)); 260 info.rti_addrs = rtm->rtm_addrs; 261 if (rt_xaddrs(rtm->rtm_type, (void *)(rtm + 1), len + (char *)rtm, &info)) 262 senderr(EINVAL); 263 info.rti_flags = rtm->rtm_flags; 264 #ifdef RTSOCK_DEBUG 265 if (dst->sa_family == AF_INET) { 266 printf("%s: extracted dst %s\n", __func__, 267 inet_ntoa(((const struct sockaddr_in *)dst)->sin_addr)); 268 } 269 #endif /* RTSOCK_DEBUG */ 270 if (dst == NULL || (dst->sa_family >= AF_MAX)) 271 senderr(EINVAL); 272 if (gate != NULL && (gate->sa_family >= AF_MAX)) 273 senderr(EINVAL); 274 275 /* 276 * Verify that the caller has the appropriate privilege; RTM_GET 277 * is the only operation the non-superuser is allowed. 278 */ 279 if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE, 280 0, rtm, NULL, NULL) != 0) 281 senderr(EACCES); 282 283 switch (rtm->rtm_type) { 284 285 case RTM_ADD: 286 if (gate == NULL) 287 senderr(EINVAL); 288 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 289 if (error == 0 && saved_nrt) { 290 rt_setmetrics(rtm->rtm_inits, 291 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 292 saved_nrt->rt_refcnt--; 293 } 294 break; 295 296 case RTM_DELETE: 297 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 298 if (error == 0) { 299 (rt = saved_nrt)->rt_refcnt++; 300 goto report; 301 } 302 break; 303 304 case RTM_GET: 305 case RTM_CHANGE: 306 case RTM_LOCK: 307 /* XXX This will mask dst with netmask before 308 * searching. It did not used to do that. --dyoung 309 */ 310 error = rtrequest(RTM_GET, dst, gate, netmask, 0, &rt); 311 if (error != 0) 312 senderr(error); 313 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 314 struct radix_node *rn; 315 316 if (memcmp(dst, rt_getkey(rt), dst->sa_len) != 0) 317 senderr(ESRCH); 318 netmask = intern_netmask(netmask); 319 for (rn = rt->rt_nodes; rn; rn = rn->rn_dupedkey) 320 if (netmask == (const struct sockaddr *)rn->rn_mask) 321 break; 322 if (rn == NULL) 323 senderr(ETOOMANYREFS); 324 rt = (struct rtentry *)rn; 325 } 326 327 switch (rtm->rtm_type) { 328 case RTM_GET: 329 report: 330 dst = rt_getkey(rt); 331 gate = rt->rt_gateway; 332 netmask = rt_mask(rt); 333 if ((rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) == 0) 334 ; 335 else if ((ifp = rt->rt_ifp) != NULL) { 336 const struct ifaddr *rtifa; 337 ifpaddr = ifp->if_dl->ifa_addr; 338 /* rtifa used to be simply rt->rt_ifa. 339 * If rt->rt_ifa != NULL, then 340 * rt_get_ifa() != NULL. So this 341 * ought to still be safe. --dyoung 342 */ 343 rtifa = rt_get_ifa(rt); 344 ifaaddr = rtifa->ifa_addr; 345 #ifdef RTSOCK_DEBUG 346 if (ifaaddr->sa_family == AF_INET) { 347 printf("%s: copying out RTAX_IFA %s ", 348 __func__, 349 inet_ntoa(((const struct sockaddr_in *)ifaaddr)->sin_addr)); 350 printf("for dst %s ifa_getifa %p ifa_seqno %p\n", 351 inet_ntoa(((const struct sockaddr_in *)dst)->sin_addr), 352 (void *)rtifa->ifa_getifa, rtifa->ifa_seqno); 353 } 354 #endif /* RTSOCK_DEBUG */ 355 if (ifp->if_flags & IFF_POINTOPOINT) 356 brdaddr = rtifa->ifa_dstaddr; 357 else 358 brdaddr = NULL; 359 rtm->rtm_index = ifp->if_index; 360 } else { 361 ifpaddr = NULL; 362 ifaaddr = NULL; 363 } 364 (void)rt_msg2(rtm->rtm_type, &info, NULL, NULL, &len); 365 if (len > rtm->rtm_msglen) { 366 struct rt_msghdr *new_rtm; 367 R_Malloc(new_rtm, struct rt_msghdr *, len); 368 if (new_rtm == NULL) 369 senderr(ENOBUFS); 370 Bcopy(rtm, new_rtm, rtm->rtm_msglen); 371 Free(rtm); rtm = new_rtm; 372 } 373 (void)rt_msg2(rtm->rtm_type, &info, (void *)rtm, 374 NULL, 0); 375 rtm->rtm_flags = rt->rt_flags; 376 rtm->rtm_rmx = rt->rt_rmx; 377 rtm->rtm_addrs = info.rti_addrs; 378 break; 379 380 case RTM_CHANGE: 381 /* 382 * new gateway could require new ifaddr, ifp; 383 * flags may also be different; ifp may be specified 384 * by ll sockaddr when protocol address is ambiguous 385 */ 386 if ((error = rt_getifa(&info)) != 0) 387 senderr(error); 388 if (gate && rt_setgate(rt, gate)) 389 senderr(EDQUOT); 390 /* new gateway could require new ifaddr, ifp; 391 flags may also be different; ifp may be specified 392 by ll sockaddr when protocol address is ambiguous */ 393 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && 394 (ifp = ifa->ifa_ifp) && (ifaaddr || gate)) 395 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, 396 ifp); 397 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || 398 (gate && (ifa = ifa_ifwithroute(rt->rt_flags, 399 rt_getkey(rt), gate)))) 400 ifp = ifa->ifa_ifp; 401 if (ifa) { 402 struct ifaddr *oifa = rt->rt_ifa; 403 if (oifa != ifa) { 404 if (oifa && oifa->ifa_rtrequest) { 405 oifa->ifa_rtrequest(RTM_DELETE, 406 rt, &info); 407 } 408 rt_replace_ifa(rt, ifa); 409 rt->rt_ifp = ifp; 410 } 411 } 412 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 413 &rt->rt_rmx); 414 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 415 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 416 /* 417 * Fall into 418 */ 419 case RTM_LOCK: 420 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 421 rt->rt_rmx.rmx_locks |= 422 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 423 break; 424 } 425 break; 426 427 default: 428 senderr(EOPNOTSUPP); 429 } 430 431 flush: 432 if (rtm) { 433 if (error) 434 rtm->rtm_errno = error; 435 else 436 rtm->rtm_flags |= RTF_DONE; 437 } 438 family = dst ? dst->sa_family : 0; 439 if (rt) 440 rtfree(rt); 441 { 442 struct rawcb *rp = NULL; 443 /* 444 * Check to see if we don't want our own messages. 445 */ 446 if ((so->so_options & SO_USELOOPBACK) == 0) { 447 if (route_cb.any_count <= 1) { 448 if (rtm) 449 Free(rtm); 450 m_freem(m); 451 return error; 452 } 453 /* There is another listener, so construct message */ 454 rp = sotorawcb(so); 455 } 456 if (rtm) { 457 m_copyback(m, 0, rtm->rtm_msglen, (void *)rtm); 458 if (m->m_pkthdr.len < rtm->rtm_msglen) { 459 m_freem(m); 460 m = NULL; 461 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 462 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 463 Free(rtm); 464 } 465 if (rp) 466 rp->rcb_proto.sp_family = 0; /* Avoid us */ 467 if (family) 468 proto.sp_protocol = family; 469 if (m) 470 raw_input(m, &proto, &route_src, &route_dst); 471 if (rp) 472 rp->rcb_proto.sp_family = PF_ROUTE; 473 } 474 return error; 475 } 476 477 void 478 rt_setmetrics(u_long which, const struct rt_metrics *in, struct rt_metrics *out) 479 { 480 #define metric(f, e) if (which & (f)) out->e = in->e; 481 metric(RTV_RPIPE, rmx_recvpipe); 482 metric(RTV_SPIPE, rmx_sendpipe); 483 metric(RTV_SSTHRESH, rmx_ssthresh); 484 metric(RTV_RTT, rmx_rtt); 485 metric(RTV_RTTVAR, rmx_rttvar); 486 metric(RTV_HOPCOUNT, rmx_hopcount); 487 metric(RTV_MTU, rmx_mtu); 488 metric(RTV_EXPIRE, rmx_expire); 489 #undef metric 490 } 491 492 #define ROUNDUP(a) \ 493 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 494 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 495 496 static int 497 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim, struct rt_addrinfo *rtinfo) 498 { 499 const struct sockaddr *sa = NULL; /* Quell compiler warning */ 500 int i; 501 502 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 503 if ((rtinfo->rti_addrs & (1 << i)) == 0) 504 continue; 505 rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp; 506 ADVANCE(cp, sa); 507 } 508 509 /* Check for extra addresses specified, except RTM_GET asking for interface info. */ 510 if (rtmtype == RTM_GET) { 511 if (((rtinfo->rti_addrs & (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0 << i)) != 0) 512 return 1; 513 } else { 514 if ((rtinfo->rti_addrs & (~0 << i)) != 0) 515 return 1; 516 } 517 /* Check for bad data length. */ 518 if (cp != cplim) { 519 if (i == RTAX_NETMASK + 1 && sa && 520 cp - ROUNDUP(sa->sa_len) + sa->sa_len == cplim) 521 /* 522 * The last sockaddr was netmask. 523 * We accept this for now for the sake of old 524 * binaries or third party softwares. 525 */ 526 ; 527 else 528 return 1; 529 } 530 return 0; 531 } 532 533 static struct mbuf * 534 rt_msg1(int type, struct rt_addrinfo *rtinfo, void *data, int datalen) 535 { 536 struct rt_msghdr *rtm; 537 struct mbuf *m; 538 int i; 539 const struct sockaddr *sa; 540 int len, dlen; 541 542 m = m_gethdr(M_DONTWAIT, MT_DATA); 543 if (m == NULL) 544 return m; 545 MCLAIM(m, &routedomain.dom_mowner); 546 switch (type) { 547 548 case RTM_DELADDR: 549 case RTM_NEWADDR: 550 len = sizeof(struct ifa_msghdr); 551 break; 552 553 #ifdef COMPAT_14 554 case RTM_OIFINFO: 555 len = sizeof(struct if_msghdr14); 556 break; 557 #endif 558 559 case RTM_IFINFO: 560 len = sizeof(struct if_msghdr); 561 break; 562 563 case RTM_IFANNOUNCE: 564 case RTM_IEEE80211: 565 len = sizeof(struct if_announcemsghdr); 566 break; 567 568 default: 569 len = sizeof(struct rt_msghdr); 570 } 571 if (len > MHLEN + MLEN) 572 panic("rt_msg1: message too long"); 573 else if (len > MHLEN) { 574 m->m_next = m_get(M_DONTWAIT, MT_DATA); 575 if (m->m_next == NULL) { 576 m_freem(m); 577 return NULL; 578 } 579 MCLAIM(m->m_next, m->m_owner); 580 m->m_pkthdr.len = len; 581 m->m_len = MHLEN; 582 m->m_next->m_len = len - MHLEN; 583 } else { 584 m->m_pkthdr.len = m->m_len = len; 585 } 586 m->m_pkthdr.rcvif = NULL; 587 m_copyback(m, 0, datalen, data); 588 rtm = mtod(m, struct rt_msghdr *); 589 for (i = 0; i < RTAX_MAX; i++) { 590 if ((sa = rtinfo->rti_info[i]) == NULL) 591 continue; 592 rtinfo->rti_addrs |= (1 << i); 593 dlen = ROUNDUP(sa->sa_len); 594 m_copyback(m, len, dlen, sa); 595 len += dlen; 596 } 597 if (m->m_pkthdr.len != len) { 598 m_freem(m); 599 return NULL; 600 } 601 rtm->rtm_msglen = len; 602 rtm->rtm_version = RTM_VERSION; 603 rtm->rtm_type = type; 604 return m; 605 } 606 607 /* 608 * rt_msg2 609 * 610 * fills 'cp' or 'w'.w_tmem with the routing socket message and 611 * returns the length of the message in 'lenp'. 612 * 613 * if walkarg is 0, cp is expected to be 0 or a buffer large enough to hold 614 * the message 615 * otherwise walkarg's w_needed is updated and if the user buffer is 616 * specified and w_needed indicates space exists the information is copied 617 * into the temp space (w_tmem). w_tmem is [re]allocated if necessary, 618 * if the allocation fails ENOBUFS is returned. 619 */ 620 static int 621 rt_msg2(int type, struct rt_addrinfo *rtinfo, void *cpv, struct walkarg *w, 622 int *lenp) 623 { 624 int i; 625 int len, dlen, second_time = 0; 626 char *cp0, *cp = cpv; 627 628 rtinfo->rti_addrs = 0; 629 again: 630 switch (type) { 631 632 case RTM_DELADDR: 633 case RTM_NEWADDR: 634 len = sizeof(struct ifa_msghdr); 635 break; 636 #ifdef COMPAT_14 637 case RTM_OIFINFO: 638 len = sizeof(struct if_msghdr14); 639 break; 640 #endif 641 642 case RTM_IFINFO: 643 len = sizeof(struct if_msghdr); 644 break; 645 646 default: 647 len = sizeof(struct rt_msghdr); 648 } 649 if ((cp0 = cp) != NULL) 650 cp += len; 651 for (i = 0; i < RTAX_MAX; i++) { 652 const struct sockaddr *sa; 653 654 if ((sa = rtinfo->rti_info[i]) == NULL) 655 continue; 656 rtinfo->rti_addrs |= (1 << i); 657 dlen = ROUNDUP(sa->sa_len); 658 if (cp) { 659 bcopy(sa, cp, (unsigned)dlen); 660 cp += dlen; 661 } 662 len += dlen; 663 } 664 if (cp == NULL && w != NULL && !second_time) { 665 struct walkarg *rw = w; 666 667 rw->w_needed += len; 668 if (rw->w_needed <= 0 && rw->w_where) { 669 if (rw->w_tmemsize < len) { 670 if (rw->w_tmem) 671 free(rw->w_tmem, M_RTABLE); 672 rw->w_tmem = (void *) malloc(len, M_RTABLE, 673 M_NOWAIT); 674 if (rw->w_tmem) 675 rw->w_tmemsize = len; 676 } 677 if (rw->w_tmem) { 678 cp = rw->w_tmem; 679 second_time = 1; 680 goto again; 681 } else { 682 rw->w_tmemneeded = len; 683 return ENOBUFS; 684 } 685 } 686 } 687 if (cp) { 688 struct rt_msghdr *rtm = (struct rt_msghdr *)cp0; 689 690 rtm->rtm_version = RTM_VERSION; 691 rtm->rtm_type = type; 692 rtm->rtm_msglen = len; 693 } 694 if (lenp) 695 *lenp = len; 696 return 0; 697 } 698 699 /* 700 * This routine is called to generate a message from the routing 701 * socket indicating that a redirect has occurred, a routing lookup 702 * has failed, or that a protocol has detected timeouts to a particular 703 * destination. 704 */ 705 void 706 rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 707 { 708 struct rt_msghdr rtm; 709 struct mbuf *m; 710 const struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; 711 712 if (route_cb.any_count == 0) 713 return; 714 memset(&rtm, 0, sizeof(rtm)); 715 rtm.rtm_flags = RTF_DONE | flags; 716 rtm.rtm_errno = error; 717 m = rt_msg1(type, rtinfo, (void *)&rtm, sizeof(rtm)); 718 if (m == NULL) 719 return; 720 mtod(m, struct rt_msghdr *)->rtm_addrs = rtinfo->rti_addrs; 721 route_enqueue(m, sa ? sa->sa_family : 0); 722 } 723 724 /* 725 * This routine is called to generate a message from the routing 726 * socket indicating that the status of a network interface has changed. 727 */ 728 void 729 rt_ifmsg(struct ifnet *ifp) 730 { 731 struct if_msghdr ifm; 732 #ifdef COMPAT_14 733 struct if_msghdr14 oifm; 734 #endif 735 struct mbuf *m; 736 struct rt_addrinfo info; 737 738 if (route_cb.any_count == 0) 739 return; 740 memset(&info, 0, sizeof(info)); 741 memset(&ifm, 0, sizeof(ifm)); 742 ifm.ifm_index = ifp->if_index; 743 ifm.ifm_flags = ifp->if_flags; 744 ifm.ifm_data = ifp->if_data; 745 ifm.ifm_addrs = 0; 746 m = rt_msg1(RTM_IFINFO, &info, (void *)&ifm, sizeof(ifm)); 747 if (m == NULL) 748 return; 749 route_enqueue(m, 0); 750 #ifdef COMPAT_14 751 memset(&info, 0, sizeof(info)); 752 memset(&oifm, 0, sizeof(oifm)); 753 oifm.ifm_index = ifp->if_index; 754 oifm.ifm_flags = ifp->if_flags; 755 oifm.ifm_data.ifi_type = ifp->if_data.ifi_type; 756 oifm.ifm_data.ifi_addrlen = ifp->if_data.ifi_addrlen; 757 oifm.ifm_data.ifi_hdrlen = ifp->if_data.ifi_hdrlen; 758 oifm.ifm_data.ifi_mtu = ifp->if_data.ifi_mtu; 759 oifm.ifm_data.ifi_metric = ifp->if_data.ifi_metric; 760 oifm.ifm_data.ifi_baudrate = ifp->if_data.ifi_baudrate; 761 oifm.ifm_data.ifi_ipackets = ifp->if_data.ifi_ipackets; 762 oifm.ifm_data.ifi_ierrors = ifp->if_data.ifi_ierrors; 763 oifm.ifm_data.ifi_opackets = ifp->if_data.ifi_opackets; 764 oifm.ifm_data.ifi_oerrors = ifp->if_data.ifi_oerrors; 765 oifm.ifm_data.ifi_collisions = ifp->if_data.ifi_collisions; 766 oifm.ifm_data.ifi_ibytes = ifp->if_data.ifi_ibytes; 767 oifm.ifm_data.ifi_obytes = ifp->if_data.ifi_obytes; 768 oifm.ifm_data.ifi_imcasts = ifp->if_data.ifi_imcasts; 769 oifm.ifm_data.ifi_omcasts = ifp->if_data.ifi_omcasts; 770 oifm.ifm_data.ifi_iqdrops = ifp->if_data.ifi_iqdrops; 771 oifm.ifm_data.ifi_noproto = ifp->if_data.ifi_noproto; 772 oifm.ifm_data.ifi_lastchange = ifp->if_data.ifi_lastchange; 773 oifm.ifm_addrs = 0; 774 m = rt_msg1(RTM_OIFINFO, &info, (void *)&oifm, sizeof(oifm)); 775 if (m == NULL) 776 return; 777 route_enqueue(m, 0); 778 #endif 779 } 780 781 /* 782 * This is called to generate messages from the routing socket 783 * indicating a network interface has had addresses associated with it. 784 * if we ever reverse the logic and replace messages TO the routing 785 * socket indicate a request to configure interfaces, then it will 786 * be unnecessary as the routing socket will automatically generate 787 * copies of it. 788 */ 789 void 790 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) 791 { 792 struct rt_addrinfo info; 793 const struct sockaddr *sa = NULL; 794 int pass; 795 struct mbuf *m = NULL; 796 struct ifnet *ifp = ifa->ifa_ifp; 797 798 if (route_cb.any_count == 0) 799 return; 800 for (pass = 1; pass < 3; pass++) { 801 memset(&info, 0, sizeof(info)); 802 if ((cmd == RTM_ADD && pass == 1) || 803 (cmd == RTM_DELETE && pass == 2)) { 804 struct ifa_msghdr ifam; 805 int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; 806 807 ifaaddr = sa = ifa->ifa_addr; 808 ifpaddr = ifp->if_dl->ifa_addr; 809 netmask = ifa->ifa_netmask; 810 brdaddr = ifa->ifa_dstaddr; 811 memset(&ifam, 0, sizeof(ifam)); 812 ifam.ifam_index = ifp->if_index; 813 ifam.ifam_metric = ifa->ifa_metric; 814 ifam.ifam_flags = ifa->ifa_flags; 815 m = rt_msg1(ncmd, &info, (void *)&ifam, sizeof(ifam)); 816 if (m == NULL) 817 continue; 818 mtod(m, struct ifa_msghdr *)->ifam_addrs = 819 info.rti_addrs; 820 } 821 if ((cmd == RTM_ADD && pass == 2) || 822 (cmd == RTM_DELETE && pass == 1)) { 823 struct rt_msghdr rtm; 824 825 if (rt == NULL) 826 continue; 827 netmask = rt_mask(rt); 828 dst = sa = rt_getkey(rt); 829 gate = rt->rt_gateway; 830 memset(&rtm, 0, sizeof(rtm)); 831 rtm.rtm_index = ifp->if_index; 832 rtm.rtm_flags |= rt->rt_flags; 833 rtm.rtm_errno = error; 834 m = rt_msg1(cmd, &info, (void *)&rtm, sizeof(rtm)); 835 if (m == NULL) 836 continue; 837 mtod(m, struct rt_msghdr *)->rtm_addrs = info.rti_addrs; 838 } 839 route_enqueue(m, sa ? sa->sa_family : 0); 840 } 841 } 842 843 static struct mbuf * 844 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 845 struct rt_addrinfo *info) 846 { 847 struct if_announcemsghdr ifan; 848 849 memset(info, 0, sizeof(*info)); 850 memset(&ifan, 0, sizeof(ifan)); 851 ifan.ifan_index = ifp->if_index; 852 strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name)); 853 ifan.ifan_what = what; 854 return rt_msg1(type, info, (void *)&ifan, sizeof(ifan)); 855 } 856 857 /* 858 * This is called to generate routing socket messages indicating 859 * network interface arrival and departure. 860 */ 861 void 862 rt_ifannouncemsg(struct ifnet *ifp, int what) 863 { 864 struct mbuf *m; 865 struct rt_addrinfo info; 866 867 if (route_cb.any_count == 0) 868 return; 869 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 870 if (m == NULL) 871 return; 872 route_enqueue(m, 0); 873 } 874 875 /* 876 * This is called to generate routing socket messages indicating 877 * IEEE80211 wireless events. 878 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 879 */ 880 void 881 rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 882 { 883 struct mbuf *m; 884 struct rt_addrinfo info; 885 886 if (route_cb.any_count == 0) 887 return; 888 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 889 if (m == NULL) 890 return; 891 /* 892 * Append the ieee80211 data. Try to stick it in the 893 * mbuf containing the ifannounce msg; otherwise allocate 894 * a new mbuf and append. 895 * 896 * NB: we assume m is a single mbuf. 897 */ 898 if (data_len > M_TRAILINGSPACE(m)) { 899 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 900 if (n == NULL) { 901 m_freem(m); 902 return; 903 } 904 (void)memcpy(mtod(n, void *), data, data_len); 905 n->m_len = data_len; 906 m->m_next = n; 907 } else if (data_len > 0) { 908 (void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len); 909 m->m_len += data_len; 910 } 911 if (m->m_flags & M_PKTHDR) 912 m->m_pkthdr.len += data_len; 913 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 914 route_enqueue(m, 0); 915 } 916 917 /* 918 * This is used in dumping the kernel table via sysctl(). 919 */ 920 static int 921 sysctl_dumpentry(struct rtentry *rt, void *v) 922 { 923 struct walkarg *w = v; 924 int error = 0, size; 925 struct rt_addrinfo info; 926 927 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 928 return 0; 929 memset(&info, 0, sizeof(info)); 930 dst = rt_getkey(rt); 931 gate = rt->rt_gateway; 932 netmask = rt_mask(rt); 933 if (rt->rt_ifp) { 934 const struct ifaddr *rtifa; 935 ifpaddr = rt->rt_ifp->if_dl->ifa_addr; 936 /* rtifa used to be simply rt->rt_ifa. If rt->rt_ifa != NULL, 937 * then rt_get_ifa() != NULL. So this ought to still be safe. 938 * --dyoung 939 */ 940 rtifa = rt_get_ifa(rt); 941 ifaaddr = rtifa->ifa_addr; 942 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 943 brdaddr = rtifa->ifa_dstaddr; 944 } 945 if ((error = rt_msg2(RTM_GET, &info, 0, w, &size))) 946 return error; 947 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 948 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 949 950 rtm->rtm_flags = rt->rt_flags; 951 rtm->rtm_use = rt->rt_use; 952 rtm->rtm_rmx = rt->rt_rmx; 953 KASSERT(rt->rt_ifp != NULL); 954 rtm->rtm_index = rt->rt_ifp->if_index; 955 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 956 rtm->rtm_addrs = info.rti_addrs; 957 if ((error = copyout(rtm, w->w_where, size)) != 0) 958 w->w_where = NULL; 959 else 960 w->w_where = (char *)w->w_where + size; 961 } 962 return error; 963 } 964 965 static int 966 sysctl_iflist(int af, struct walkarg *w, int type) 967 { 968 struct ifnet *ifp; 969 struct ifaddr *ifa; 970 struct rt_addrinfo info; 971 int len, error = 0; 972 973 memset(&info, 0, sizeof(info)); 974 IFNET_FOREACH(ifp) { 975 if (w->w_arg && w->w_arg != ifp->if_index) 976 continue; 977 if (IFADDR_EMPTY(ifp)) 978 continue; 979 ifpaddr = ifp->if_dl->ifa_addr; 980 switch (type) { 981 case NET_RT_IFLIST: 982 error = 983 rt_msg2(RTM_IFINFO, &info, NULL, w, &len); 984 break; 985 #ifdef COMPAT_14 986 case NET_RT_OIFLIST: 987 error = 988 rt_msg2(RTM_OIFINFO, &info, NULL, w, &len); 989 break; 990 #endif 991 default: 992 panic("sysctl_iflist(1)"); 993 } 994 if (error) 995 return error; 996 ifpaddr = NULL; 997 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 998 switch (type) { 999 case NET_RT_IFLIST: { 1000 struct if_msghdr *ifm; 1001 1002 ifm = (struct if_msghdr *)w->w_tmem; 1003 ifm->ifm_index = ifp->if_index; 1004 ifm->ifm_flags = ifp->if_flags; 1005 ifm->ifm_data = ifp->if_data; 1006 ifm->ifm_addrs = info.rti_addrs; 1007 error = copyout(ifm, w->w_where, len); 1008 if (error) 1009 return error; 1010 w->w_where = (char *)w->w_where + len; 1011 break; 1012 } 1013 1014 #ifdef COMPAT_14 1015 case NET_RT_OIFLIST: { 1016 struct if_msghdr14 *ifm; 1017 1018 ifm = (struct if_msghdr14 *)w->w_tmem; 1019 ifm->ifm_index = ifp->if_index; 1020 ifm->ifm_flags = ifp->if_flags; 1021 ifm->ifm_data.ifi_type = ifp->if_data.ifi_type; 1022 ifm->ifm_data.ifi_addrlen = 1023 ifp->if_data.ifi_addrlen; 1024 ifm->ifm_data.ifi_hdrlen = 1025 ifp->if_data.ifi_hdrlen; 1026 ifm->ifm_data.ifi_mtu = ifp->if_data.ifi_mtu; 1027 ifm->ifm_data.ifi_metric = 1028 ifp->if_data.ifi_metric; 1029 ifm->ifm_data.ifi_baudrate = 1030 ifp->if_data.ifi_baudrate; 1031 ifm->ifm_data.ifi_ipackets = 1032 ifp->if_data.ifi_ipackets; 1033 ifm->ifm_data.ifi_ierrors = 1034 ifp->if_data.ifi_ierrors; 1035 ifm->ifm_data.ifi_opackets = 1036 ifp->if_data.ifi_opackets; 1037 ifm->ifm_data.ifi_oerrors = 1038 ifp->if_data.ifi_oerrors; 1039 ifm->ifm_data.ifi_collisions = 1040 ifp->if_data.ifi_collisions; 1041 ifm->ifm_data.ifi_ibytes = 1042 ifp->if_data.ifi_ibytes; 1043 ifm->ifm_data.ifi_obytes = 1044 ifp->if_data.ifi_obytes; 1045 ifm->ifm_data.ifi_imcasts = 1046 ifp->if_data.ifi_imcasts; 1047 ifm->ifm_data.ifi_omcasts = 1048 ifp->if_data.ifi_omcasts; 1049 ifm->ifm_data.ifi_iqdrops = 1050 ifp->if_data.ifi_iqdrops; 1051 ifm->ifm_data.ifi_noproto = 1052 ifp->if_data.ifi_noproto; 1053 ifm->ifm_data.ifi_lastchange = 1054 ifp->if_data.ifi_lastchange; 1055 ifm->ifm_addrs = info.rti_addrs; 1056 error = copyout(ifm, w->w_where, len); 1057 if (error) 1058 return error; 1059 w->w_where = (char *)w->w_where + len; 1060 break; 1061 } 1062 #endif 1063 default: 1064 panic("sysctl_iflist(2)"); 1065 } 1066 } 1067 IFADDR_FOREACH(ifa, ifp) { 1068 if (af && af != ifa->ifa_addr->sa_family) 1069 continue; 1070 ifaaddr = ifa->ifa_addr; 1071 netmask = ifa->ifa_netmask; 1072 brdaddr = ifa->ifa_dstaddr; 1073 if ((error = rt_msg2(RTM_NEWADDR, &info, 0, w, &len))) 1074 return error; 1075 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1076 struct ifa_msghdr *ifam; 1077 1078 ifam = (struct ifa_msghdr *)w->w_tmem; 1079 ifam->ifam_index = ifa->ifa_ifp->if_index; 1080 ifam->ifam_flags = ifa->ifa_flags; 1081 ifam->ifam_metric = ifa->ifa_metric; 1082 ifam->ifam_addrs = info.rti_addrs; 1083 error = copyout(w->w_tmem, w->w_where, len); 1084 if (error) 1085 return error; 1086 w->w_where = (char *)w->w_where + len; 1087 } 1088 } 1089 ifaaddr = netmask = brdaddr = NULL; 1090 } 1091 return 0; 1092 } 1093 1094 static int 1095 sysctl_rtable(SYSCTLFN_ARGS) 1096 { 1097 void *where = oldp; 1098 size_t *given = oldlenp; 1099 const void *new = newp; 1100 int i, s, error = EINVAL; 1101 u_char af; 1102 struct walkarg w; 1103 1104 if (namelen == 1 && name[0] == CTL_QUERY) 1105 return sysctl_query(SYSCTLFN_CALL(rnode)); 1106 1107 if (new) 1108 return EPERM; 1109 if (namelen != 3) 1110 return EINVAL; 1111 af = name[0]; 1112 w.w_tmemneeded = 0; 1113 w.w_tmemsize = 0; 1114 w.w_tmem = NULL; 1115 again: 1116 /* we may return here if a later [re]alloc of the t_mem buffer fails */ 1117 if (w.w_tmemneeded) { 1118 w.w_tmem = (void *) malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK); 1119 w.w_tmemsize = w.w_tmemneeded; 1120 w.w_tmemneeded = 0; 1121 } 1122 w.w_op = name[1]; 1123 w.w_arg = name[2]; 1124 w.w_given = *given; 1125 w.w_needed = 0 - w.w_given; 1126 w.w_where = where; 1127 1128 s = splsoftnet(); 1129 switch (w.w_op) { 1130 1131 case NET_RT_DUMP: 1132 case NET_RT_FLAGS: 1133 for (i = 1; i <= AF_MAX; i++) 1134 if ((af == 0 || af == i) && 1135 (error = rt_walktree(i, sysctl_dumpentry, &w))) 1136 break; 1137 break; 1138 1139 #ifdef COMPAT_14 1140 case NET_RT_OIFLIST: 1141 error = sysctl_iflist(af, &w, w.w_op); 1142 break; 1143 #endif 1144 1145 case NET_RT_IFLIST: 1146 error = sysctl_iflist(af, &w, w.w_op); 1147 } 1148 splx(s); 1149 1150 /* check to see if we couldn't allocate memory with NOWAIT */ 1151 if (error == ENOBUFS && w.w_tmem == 0 && w.w_tmemneeded) 1152 goto again; 1153 1154 if (w.w_tmem) 1155 free(w.w_tmem, M_RTABLE); 1156 w.w_needed += w.w_given; 1157 if (where) { 1158 *given = (char *)w.w_where - (char *)where; 1159 if (*given < w.w_needed) 1160 return ENOMEM; 1161 } else { 1162 *given = (11 * w.w_needed) / 10; 1163 } 1164 return error; 1165 } 1166 1167 /* 1168 * Routing message software interrupt routine 1169 */ 1170 static void 1171 route_intr(void *cookie) 1172 { 1173 struct sockproto proto = { .sp_family = PF_ROUTE, }; 1174 struct mbuf *m; 1175 int s; 1176 1177 mutex_enter(softnet_lock); 1178 KERNEL_LOCK(1, NULL); 1179 while (!IF_IS_EMPTY(&route_intrq)) { 1180 s = splnet(); 1181 IF_DEQUEUE(&route_intrq, m); 1182 splx(s); 1183 if (m == NULL) 1184 break; 1185 proto.sp_protocol = M_GETCTX(m, uintptr_t); 1186 raw_input(m, &proto, &route_src, &route_dst); 1187 } 1188 KERNEL_UNLOCK_ONE(NULL); 1189 mutex_exit(softnet_lock); 1190 } 1191 1192 /* 1193 * Enqueue a message to the software interrupt routine. 1194 */ 1195 static void 1196 route_enqueue(struct mbuf *m, int family) 1197 { 1198 int s, wasempty; 1199 1200 s = splnet(); 1201 if (IF_QFULL(&route_intrq)) { 1202 IF_DROP(&route_intrq); 1203 m_freem(m); 1204 } else { 1205 wasempty = IF_IS_EMPTY(&route_intrq); 1206 M_SETCTX(m, (uintptr_t)family); 1207 IF_ENQUEUE(&route_intrq, m); 1208 if (wasempty) 1209 softint_schedule(route_sih); 1210 } 1211 splx(s); 1212 } 1213 1214 void 1215 rt_init(void) 1216 { 1217 1218 route_intrq.ifq_maxlen = route_maxqlen; 1219 route_sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1220 route_intr, NULL); 1221 } 1222 1223 /* 1224 * Definitions of protocols supported in the ROUTE domain. 1225 */ 1226 PR_WRAP_USRREQ(route_usrreq) 1227 #define route_usrreq route_usrreq_wrapper 1228 1229 const struct protosw routesw[] = { 1230 { 1231 .pr_type = SOCK_RAW, 1232 .pr_domain = &routedomain, 1233 .pr_flags = PR_ATOMIC|PR_ADDR, 1234 .pr_input = raw_input, 1235 .pr_output = route_output, 1236 .pr_ctlinput = raw_ctlinput, 1237 .pr_usrreq = route_usrreq, 1238 .pr_init = raw_init, 1239 }, 1240 }; 1241 1242 struct domain routedomain = { 1243 .dom_family = PF_ROUTE, 1244 .dom_name = "route", 1245 .dom_init = route_init, 1246 .dom_protosw = routesw, 1247 .dom_protoswNPROTOSW = &routesw[__arraycount(routesw)], 1248 }; 1249 1250 SYSCTL_SETUP(sysctl_net_route_setup, "sysctl net.route subtree setup") 1251 { 1252 const struct sysctlnode *rnode = NULL; 1253 1254 sysctl_createv(clog, 0, NULL, NULL, 1255 CTLFLAG_PERMANENT, 1256 CTLTYPE_NODE, "net", NULL, 1257 NULL, 0, NULL, 0, 1258 CTL_NET, CTL_EOL); 1259 1260 sysctl_createv(clog, 0, NULL, &rnode, 1261 CTLFLAG_PERMANENT, 1262 CTLTYPE_NODE, "route", 1263 SYSCTL_DESCR("PF_ROUTE information"), 1264 NULL, 0, NULL, 0, 1265 CTL_NET, PF_ROUTE, CTL_EOL); 1266 sysctl_createv(clog, 0, NULL, NULL, 1267 CTLFLAG_PERMANENT, 1268 CTLTYPE_NODE, "rtable", 1269 SYSCTL_DESCR("Routing table information"), 1270 sysctl_rtable, 0, NULL, 0, 1271 CTL_NET, PF_ROUTE, 0 /* any protocol */, CTL_EOL); 1272 sysctl_createv(clog, 0, &rnode, NULL, 1273 CTLFLAG_PERMANENT, 1274 CTLTYPE_STRUCT, "stats", 1275 SYSCTL_DESCR("Routing statistics"), 1276 NULL, 0, &rtstat, sizeof(rtstat), 1277 CTL_CREATE, CTL_EOL); 1278 } 1279