1 /* $NetBSD: rtsock.c,v 1.109 2008/06/15 20:36:55 cube 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 1.109 2008/06/15 20:36:55 cube 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|M_ZERO); 165 so->so_pcb = rp; 166 } 167 if (req == PRU_DETACH && rp) 168 rt_adjustcount(rp->rcb_proto.sp_protocol, -1); 169 s = splsoftnet(); 170 171 /* 172 * Don't call raw_usrreq() in the attach case, because 173 * we want to allow non-privileged processes to listen on 174 * and send "safe" commands to the routing socket. 175 */ 176 if (req == PRU_ATTACH) { 177 if (l == NULL) 178 error = EACCES; 179 else 180 error = raw_attach(so, (int)(long)nam); 181 } else 182 error = raw_usrreq(so, req, m, nam, control, l); 183 184 rp = sotorawcb(so); 185 if (req == PRU_ATTACH && rp) { 186 if (error) { 187 free((void *)rp, M_PCB); 188 splx(s); 189 return error; 190 } 191 rt_adjustcount(rp->rcb_proto.sp_protocol, 1); 192 rp->rcb_laddr = &route_src; 193 rp->rcb_faddr = &route_dst; 194 soisconnected(so); 195 so->so_options |= SO_USELOOPBACK; 196 } 197 splx(s); 198 return error; 199 } 200 201 static const struct sockaddr * 202 intern_netmask(const struct sockaddr *mask) 203 { 204 struct radix_node *rn; 205 extern struct radix_node_head *mask_rnhead; 206 207 if (mask != NULL && 208 (rn = rn_search(mask, mask_rnhead->rnh_treetop))) 209 mask = (const struct sockaddr *)rn->rn_key; 210 211 return mask; 212 } 213 214 /*ARGSUSED*/ 215 int 216 route_output(struct mbuf *m, ...) 217 { 218 struct sockproto proto = { .sp_family = PF_ROUTE, }; 219 struct rt_msghdr *rtm = NULL; 220 struct rtentry *rt = NULL; 221 struct rtentry *saved_nrt = NULL; 222 struct rt_addrinfo info; 223 int len, error = 0; 224 struct ifnet *ifp = NULL; 225 struct ifaddr *ifa = NULL; 226 struct socket *so; 227 va_list ap; 228 sa_family_t family; 229 230 va_start(ap, m); 231 so = va_arg(ap, struct socket *); 232 va_end(ap); 233 234 #define senderr(e) do { error = e; goto flush;} while (/*CONSTCOND*/ 0) 235 if (m == NULL || ((m->m_len < sizeof(int32_t)) && 236 (m = m_pullup(m, sizeof(int32_t))) == NULL)) 237 return ENOBUFS; 238 if ((m->m_flags & M_PKTHDR) == 0) 239 panic("route_output"); 240 len = m->m_pkthdr.len; 241 if (len < sizeof(*rtm) || 242 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 243 dst = NULL; 244 senderr(EINVAL); 245 } 246 R_Malloc(rtm, struct rt_msghdr *, len); 247 if (rtm == NULL) { 248 dst = NULL; 249 senderr(ENOBUFS); 250 } 251 m_copydata(m, 0, len, (void *)rtm); 252 if (rtm->rtm_version != RTM_VERSION) { 253 dst = NULL; 254 senderr(EPROTONOSUPPORT); 255 } 256 rtm->rtm_pid = curproc->p_pid; 257 memset(&info, 0, sizeof(info)); 258 info.rti_addrs = rtm->rtm_addrs; 259 if (rt_xaddrs(rtm->rtm_type, (void *)(rtm + 1), len + (char *)rtm, &info)) 260 senderr(EINVAL); 261 info.rti_flags = rtm->rtm_flags; 262 #ifdef RTSOCK_DEBUG 263 if (dst->sa_family == AF_INET) { 264 printf("%s: extracted dst %s\n", __func__, 265 inet_ntoa(((const struct sockaddr_in *)dst)->sin_addr)); 266 } 267 #endif /* RTSOCK_DEBUG */ 268 if (dst == NULL || (dst->sa_family >= AF_MAX)) 269 senderr(EINVAL); 270 if (gate != NULL && (gate->sa_family >= AF_MAX)) 271 senderr(EINVAL); 272 273 /* 274 * Verify that the caller has the appropriate privilege; RTM_GET 275 * is the only operation the non-superuser is allowed. 276 */ 277 if (kauth_authorize_network(curlwp->l_cred, KAUTH_NETWORK_ROUTE, 278 0, rtm, NULL, NULL) != 0) 279 senderr(EACCES); 280 281 switch (rtm->rtm_type) { 282 283 case RTM_ADD: 284 if (gate == NULL) 285 senderr(EINVAL); 286 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 287 if (error == 0 && saved_nrt) { 288 rt_setmetrics(rtm->rtm_inits, 289 &rtm->rtm_rmx, &saved_nrt->rt_rmx); 290 saved_nrt->rt_refcnt--; 291 } 292 break; 293 294 case RTM_DELETE: 295 error = rtrequest1(rtm->rtm_type, &info, &saved_nrt); 296 if (error == 0) { 297 (rt = saved_nrt)->rt_refcnt++; 298 goto report; 299 } 300 break; 301 302 case RTM_GET: 303 case RTM_CHANGE: 304 case RTM_LOCK: 305 /* XXX This will mask dst with netmask before 306 * searching. It did not used to do that. --dyoung 307 */ 308 error = rtrequest1(RTM_GET, &info, &rt); 309 if (error != 0) 310 senderr(error); 311 if (rtm->rtm_type != RTM_GET) {/* XXX: too grotty */ 312 struct radix_node *rn; 313 314 if (memcmp(dst, rt_getkey(rt), dst->sa_len) != 0) 315 senderr(ESRCH); 316 netmask = intern_netmask(netmask); 317 for (rn = rt->rt_nodes; rn; rn = rn->rn_dupedkey) 318 if (netmask == (const struct sockaddr *)rn->rn_mask) 319 break; 320 if (rn == NULL) 321 senderr(ETOOMANYREFS); 322 rt = (struct rtentry *)rn; 323 } 324 325 switch (rtm->rtm_type) { 326 case RTM_GET: 327 report: 328 dst = rt_getkey(rt); 329 gate = rt->rt_gateway; 330 netmask = rt_mask(rt); 331 if ((rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) == 0) 332 ; 333 else if ((ifp = rt->rt_ifp) != NULL) { 334 const struct ifaddr *rtifa; 335 ifpaddr = ifp->if_dl->ifa_addr; 336 /* rtifa used to be simply rt->rt_ifa. 337 * If rt->rt_ifa != NULL, then 338 * rt_get_ifa() != NULL. So this 339 * ought to still be safe. --dyoung 340 */ 341 rtifa = rt_get_ifa(rt); 342 ifaaddr = rtifa->ifa_addr; 343 #ifdef RTSOCK_DEBUG 344 if (ifaaddr->sa_family == AF_INET) { 345 printf("%s: copying out RTAX_IFA %s ", 346 __func__, 347 inet_ntoa(((const struct sockaddr_in *)ifaaddr)->sin_addr)); 348 printf("for dst %s ifa_getifa %p ifa_seqno %p\n", 349 inet_ntoa(((const struct sockaddr_in *)dst)->sin_addr), 350 (void *)rtifa->ifa_getifa, rtifa->ifa_seqno); 351 } 352 #endif /* RTSOCK_DEBUG */ 353 if (ifp->if_flags & IFF_POINTOPOINT) 354 brdaddr = rtifa->ifa_dstaddr; 355 else 356 brdaddr = NULL; 357 rtm->rtm_index = ifp->if_index; 358 } else { 359 ifpaddr = NULL; 360 ifaaddr = NULL; 361 } 362 (void)rt_msg2(rtm->rtm_type, &info, NULL, NULL, &len); 363 if (len > rtm->rtm_msglen) { 364 struct rt_msghdr *new_rtm; 365 R_Malloc(new_rtm, struct rt_msghdr *, len); 366 if (new_rtm == NULL) 367 senderr(ENOBUFS); 368 memmove(new_rtm, rtm, rtm->rtm_msglen); 369 Free(rtm); rtm = new_rtm; 370 } 371 (void)rt_msg2(rtm->rtm_type, &info, (void *)rtm, 372 NULL, 0); 373 rtm->rtm_flags = rt->rt_flags; 374 rtm->rtm_rmx = rt->rt_rmx; 375 rtm->rtm_addrs = info.rti_addrs; 376 break; 377 378 case RTM_CHANGE: 379 /* 380 * new gateway could require new ifaddr, ifp; 381 * flags may also be different; ifp may be specified 382 * by ll sockaddr when protocol address is ambiguous 383 */ 384 if ((error = rt_getifa(&info)) != 0) 385 senderr(error); 386 if (gate && rt_setgate(rt, gate)) 387 senderr(EDQUOT); 388 /* new gateway could require new ifaddr, ifp; 389 flags may also be different; ifp may be specified 390 by ll sockaddr when protocol address is ambiguous */ 391 if (ifpaddr && (ifa = ifa_ifwithnet(ifpaddr)) && 392 (ifp = ifa->ifa_ifp) && (ifaaddr || gate)) 393 ifa = ifaof_ifpforaddr(ifaaddr ? ifaaddr : gate, 394 ifp); 395 else if ((ifaaddr && (ifa = ifa_ifwithaddr(ifaaddr))) || 396 (gate && (ifa = ifa_ifwithroute(rt->rt_flags, 397 rt_getkey(rt), gate)))) 398 ifp = ifa->ifa_ifp; 399 if (ifa) { 400 struct ifaddr *oifa = rt->rt_ifa; 401 if (oifa != ifa) { 402 if (oifa && oifa->ifa_rtrequest) { 403 oifa->ifa_rtrequest(RTM_DELETE, 404 rt, &info); 405 } 406 rt_replace_ifa(rt, ifa); 407 rt->rt_ifp = ifp; 408 } 409 } 410 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 411 &rt->rt_rmx); 412 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 413 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, &info); 414 /* 415 * Fall into 416 */ 417 case RTM_LOCK: 418 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 419 rt->rt_rmx.rmx_locks |= 420 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 421 break; 422 } 423 break; 424 425 default: 426 senderr(EOPNOTSUPP); 427 } 428 429 flush: 430 if (rtm) { 431 if (error) 432 rtm->rtm_errno = error; 433 else 434 rtm->rtm_flags |= RTF_DONE; 435 } 436 family = dst ? dst->sa_family : 0; 437 if (rt) 438 rtfree(rt); 439 { 440 struct rawcb *rp = NULL; 441 /* 442 * Check to see if we don't want our own messages. 443 */ 444 if ((so->so_options & SO_USELOOPBACK) == 0) { 445 if (route_cb.any_count <= 1) { 446 if (rtm) 447 Free(rtm); 448 m_freem(m); 449 return error; 450 } 451 /* There is another listener, so construct message */ 452 rp = sotorawcb(so); 453 } 454 if (rtm) { 455 m_copyback(m, 0, rtm->rtm_msglen, (void *)rtm); 456 if (m->m_pkthdr.len < rtm->rtm_msglen) { 457 m_freem(m); 458 m = NULL; 459 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 460 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 461 Free(rtm); 462 } 463 if (rp) 464 rp->rcb_proto.sp_family = 0; /* Avoid us */ 465 if (family) 466 proto.sp_protocol = family; 467 if (m) 468 raw_input(m, &proto, &route_src, &route_dst); 469 if (rp) 470 rp->rcb_proto.sp_family = PF_ROUTE; 471 } 472 return error; 473 } 474 475 void 476 rt_setmetrics(u_long which, const struct rt_metrics *in, struct rt_metrics *out) 477 { 478 #define metric(f, e) if (which & (f)) out->e = in->e; 479 metric(RTV_RPIPE, rmx_recvpipe); 480 metric(RTV_SPIPE, rmx_sendpipe); 481 metric(RTV_SSTHRESH, rmx_ssthresh); 482 metric(RTV_RTT, rmx_rtt); 483 metric(RTV_RTTVAR, rmx_rttvar); 484 metric(RTV_HOPCOUNT, rmx_hopcount); 485 metric(RTV_MTU, rmx_mtu); 486 metric(RTV_EXPIRE, rmx_expire); 487 #undef metric 488 } 489 490 #define ROUNDUP(a) \ 491 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 492 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 493 494 static int 495 rt_xaddrs(u_char rtmtype, const char *cp, const char *cplim, struct rt_addrinfo *rtinfo) 496 { 497 const struct sockaddr *sa = NULL; /* Quell compiler warning */ 498 int i; 499 500 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 501 if ((rtinfo->rti_addrs & (1 << i)) == 0) 502 continue; 503 rtinfo->rti_info[i] = sa = (const struct sockaddr *)cp; 504 ADVANCE(cp, sa); 505 } 506 507 /* Check for extra addresses specified, except RTM_GET asking for interface info. */ 508 if (rtmtype == RTM_GET) { 509 if (((rtinfo->rti_addrs & (~((1 << RTAX_IFP) | (1 << RTAX_IFA)))) & (~0 << i)) != 0) 510 return 1; 511 } else { 512 if ((rtinfo->rti_addrs & (~0 << i)) != 0) 513 return 1; 514 } 515 /* Check for bad data length. */ 516 if (cp != cplim) { 517 if (i == RTAX_NETMASK + 1 && sa && 518 cp - ROUNDUP(sa->sa_len) + sa->sa_len == cplim) 519 /* 520 * The last sockaddr was netmask. 521 * We accept this for now for the sake of old 522 * binaries or third party softwares. 523 */ 524 ; 525 else 526 return 1; 527 } 528 return 0; 529 } 530 531 static struct mbuf * 532 rt_msg1(int type, struct rt_addrinfo *rtinfo, void *data, int datalen) 533 { 534 struct rt_msghdr *rtm; 535 struct mbuf *m; 536 int i; 537 const struct sockaddr *sa; 538 int len, dlen; 539 540 m = m_gethdr(M_DONTWAIT, MT_DATA); 541 if (m == NULL) 542 return m; 543 MCLAIM(m, &routedomain.dom_mowner); 544 switch (type) { 545 546 case RTM_DELADDR: 547 case RTM_NEWADDR: 548 len = sizeof(struct ifa_msghdr); 549 break; 550 551 #ifdef COMPAT_14 552 case RTM_OIFINFO: 553 len = sizeof(struct if_msghdr14); 554 break; 555 #endif 556 557 case RTM_IFINFO: 558 len = sizeof(struct if_msghdr); 559 break; 560 561 case RTM_IFANNOUNCE: 562 case RTM_IEEE80211: 563 len = sizeof(struct if_announcemsghdr); 564 break; 565 566 default: 567 len = sizeof(struct rt_msghdr); 568 } 569 if (len > MHLEN + MLEN) 570 panic("rt_msg1: message too long"); 571 else if (len > MHLEN) { 572 m->m_next = m_get(M_DONTWAIT, MT_DATA); 573 if (m->m_next == NULL) { 574 m_freem(m); 575 return NULL; 576 } 577 MCLAIM(m->m_next, m->m_owner); 578 m->m_pkthdr.len = len; 579 m->m_len = MHLEN; 580 m->m_next->m_len = len - MHLEN; 581 } else { 582 m->m_pkthdr.len = m->m_len = len; 583 } 584 m->m_pkthdr.rcvif = NULL; 585 m_copyback(m, 0, datalen, data); 586 if (len > datalen) 587 (void)memset(mtod(m, char *) + datalen, 0, len - datalen); 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 #ifdef DIAGNOSTIC 840 if (m == NULL) 841 panic("%s: called with wrong command", __func__); 842 #endif 843 route_enqueue(m, sa ? sa->sa_family : 0); 844 } 845 } 846 847 static struct mbuf * 848 rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, 849 struct rt_addrinfo *info) 850 { 851 struct if_announcemsghdr ifan; 852 853 memset(info, 0, sizeof(*info)); 854 memset(&ifan, 0, sizeof(ifan)); 855 ifan.ifan_index = ifp->if_index; 856 strlcpy(ifan.ifan_name, ifp->if_xname, sizeof(ifan.ifan_name)); 857 ifan.ifan_what = what; 858 return rt_msg1(type, info, (void *)&ifan, sizeof(ifan)); 859 } 860 861 /* 862 * This is called to generate routing socket messages indicating 863 * network interface arrival and departure. 864 */ 865 void 866 rt_ifannouncemsg(struct ifnet *ifp, int what) 867 { 868 struct mbuf *m; 869 struct rt_addrinfo info; 870 871 if (route_cb.any_count == 0) 872 return; 873 m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); 874 if (m == NULL) 875 return; 876 route_enqueue(m, 0); 877 } 878 879 /* 880 * This is called to generate routing socket messages indicating 881 * IEEE80211 wireless events. 882 * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. 883 */ 884 void 885 rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) 886 { 887 struct mbuf *m; 888 struct rt_addrinfo info; 889 890 if (route_cb.any_count == 0) 891 return; 892 m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); 893 if (m == NULL) 894 return; 895 /* 896 * Append the ieee80211 data. Try to stick it in the 897 * mbuf containing the ifannounce msg; otherwise allocate 898 * a new mbuf and append. 899 * 900 * NB: we assume m is a single mbuf. 901 */ 902 if (data_len > M_TRAILINGSPACE(m)) { 903 struct mbuf *n = m_get(M_NOWAIT, MT_DATA); 904 if (n == NULL) { 905 m_freem(m); 906 return; 907 } 908 (void)memcpy(mtod(n, void *), data, data_len); 909 n->m_len = data_len; 910 m->m_next = n; 911 } else if (data_len > 0) { 912 (void)memcpy(mtod(m, uint8_t *) + m->m_len, data, data_len); 913 m->m_len += data_len; 914 } 915 if (m->m_flags & M_PKTHDR) 916 m->m_pkthdr.len += data_len; 917 mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; 918 route_enqueue(m, 0); 919 } 920 921 /* 922 * This is used in dumping the kernel table via sysctl(). 923 */ 924 static int 925 sysctl_dumpentry(struct rtentry *rt, void *v) 926 { 927 struct walkarg *w = v; 928 int error = 0, size; 929 struct rt_addrinfo info; 930 931 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 932 return 0; 933 memset(&info, 0, sizeof(info)); 934 dst = rt_getkey(rt); 935 gate = rt->rt_gateway; 936 netmask = rt_mask(rt); 937 if (rt->rt_ifp) { 938 const struct ifaddr *rtifa; 939 ifpaddr = rt->rt_ifp->if_dl->ifa_addr; 940 /* rtifa used to be simply rt->rt_ifa. If rt->rt_ifa != NULL, 941 * then rt_get_ifa() != NULL. So this ought to still be safe. 942 * --dyoung 943 */ 944 rtifa = rt_get_ifa(rt); 945 ifaaddr = rtifa->ifa_addr; 946 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 947 brdaddr = rtifa->ifa_dstaddr; 948 } 949 if ((error = rt_msg2(RTM_GET, &info, 0, w, &size))) 950 return error; 951 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 952 struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; 953 954 rtm->rtm_flags = rt->rt_flags; 955 rtm->rtm_use = rt->rt_use; 956 rtm->rtm_rmx = rt->rt_rmx; 957 KASSERT(rt->rt_ifp != NULL); 958 rtm->rtm_index = rt->rt_ifp->if_index; 959 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 960 rtm->rtm_addrs = info.rti_addrs; 961 if ((error = copyout(rtm, w->w_where, size)) != 0) 962 w->w_where = NULL; 963 else 964 w->w_where = (char *)w->w_where + size; 965 } 966 return error; 967 } 968 969 static int 970 sysctl_iflist(int af, struct walkarg *w, int type) 971 { 972 struct ifnet *ifp; 973 struct ifaddr *ifa; 974 struct rt_addrinfo info; 975 int len, error = 0; 976 977 memset(&info, 0, sizeof(info)); 978 IFNET_FOREACH(ifp) { 979 if (w->w_arg && w->w_arg != ifp->if_index) 980 continue; 981 if (IFADDR_EMPTY(ifp)) 982 continue; 983 ifpaddr = ifp->if_dl->ifa_addr; 984 switch (type) { 985 case NET_RT_IFLIST: 986 error = 987 rt_msg2(RTM_IFINFO, &info, NULL, w, &len); 988 break; 989 #ifdef COMPAT_14 990 case NET_RT_OIFLIST: 991 error = 992 rt_msg2(RTM_OIFINFO, &info, NULL, w, &len); 993 break; 994 #endif 995 default: 996 panic("sysctl_iflist(1)"); 997 } 998 if (error) 999 return error; 1000 ifpaddr = NULL; 1001 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1002 switch (type) { 1003 case NET_RT_IFLIST: { 1004 struct if_msghdr *ifm; 1005 1006 ifm = (struct if_msghdr *)w->w_tmem; 1007 ifm->ifm_index = ifp->if_index; 1008 ifm->ifm_flags = ifp->if_flags; 1009 ifm->ifm_data = ifp->if_data; 1010 ifm->ifm_addrs = info.rti_addrs; 1011 error = copyout(ifm, w->w_where, len); 1012 if (error) 1013 return error; 1014 w->w_where = (char *)w->w_where + len; 1015 break; 1016 } 1017 1018 #ifdef COMPAT_14 1019 case NET_RT_OIFLIST: { 1020 struct if_msghdr14 *ifm; 1021 1022 ifm = (struct if_msghdr14 *)w->w_tmem; 1023 ifm->ifm_index = ifp->if_index; 1024 ifm->ifm_flags = ifp->if_flags; 1025 ifm->ifm_data.ifi_type = ifp->if_data.ifi_type; 1026 ifm->ifm_data.ifi_addrlen = 1027 ifp->if_data.ifi_addrlen; 1028 ifm->ifm_data.ifi_hdrlen = 1029 ifp->if_data.ifi_hdrlen; 1030 ifm->ifm_data.ifi_mtu = ifp->if_data.ifi_mtu; 1031 ifm->ifm_data.ifi_metric = 1032 ifp->if_data.ifi_metric; 1033 ifm->ifm_data.ifi_baudrate = 1034 ifp->if_data.ifi_baudrate; 1035 ifm->ifm_data.ifi_ipackets = 1036 ifp->if_data.ifi_ipackets; 1037 ifm->ifm_data.ifi_ierrors = 1038 ifp->if_data.ifi_ierrors; 1039 ifm->ifm_data.ifi_opackets = 1040 ifp->if_data.ifi_opackets; 1041 ifm->ifm_data.ifi_oerrors = 1042 ifp->if_data.ifi_oerrors; 1043 ifm->ifm_data.ifi_collisions = 1044 ifp->if_data.ifi_collisions; 1045 ifm->ifm_data.ifi_ibytes = 1046 ifp->if_data.ifi_ibytes; 1047 ifm->ifm_data.ifi_obytes = 1048 ifp->if_data.ifi_obytes; 1049 ifm->ifm_data.ifi_imcasts = 1050 ifp->if_data.ifi_imcasts; 1051 ifm->ifm_data.ifi_omcasts = 1052 ifp->if_data.ifi_omcasts; 1053 ifm->ifm_data.ifi_iqdrops = 1054 ifp->if_data.ifi_iqdrops; 1055 ifm->ifm_data.ifi_noproto = 1056 ifp->if_data.ifi_noproto; 1057 ifm->ifm_data.ifi_lastchange = 1058 ifp->if_data.ifi_lastchange; 1059 ifm->ifm_addrs = info.rti_addrs; 1060 error = copyout(ifm, w->w_where, len); 1061 if (error) 1062 return error; 1063 w->w_where = (char *)w->w_where + len; 1064 break; 1065 } 1066 #endif 1067 default: 1068 panic("sysctl_iflist(2)"); 1069 } 1070 } 1071 IFADDR_FOREACH(ifa, ifp) { 1072 if (af && af != ifa->ifa_addr->sa_family) 1073 continue; 1074 ifaaddr = ifa->ifa_addr; 1075 netmask = ifa->ifa_netmask; 1076 brdaddr = ifa->ifa_dstaddr; 1077 if ((error = rt_msg2(RTM_NEWADDR, &info, 0, w, &len))) 1078 return error; 1079 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 1080 struct ifa_msghdr *ifam; 1081 1082 ifam = (struct ifa_msghdr *)w->w_tmem; 1083 ifam->ifam_index = ifa->ifa_ifp->if_index; 1084 ifam->ifam_flags = ifa->ifa_flags; 1085 ifam->ifam_metric = ifa->ifa_metric; 1086 ifam->ifam_addrs = info.rti_addrs; 1087 error = copyout(w->w_tmem, w->w_where, len); 1088 if (error) 1089 return error; 1090 w->w_where = (char *)w->w_where + len; 1091 } 1092 } 1093 ifaaddr = netmask = brdaddr = NULL; 1094 } 1095 return 0; 1096 } 1097 1098 static int 1099 sysctl_rtable(SYSCTLFN_ARGS) 1100 { 1101 void *where = oldp; 1102 size_t *given = oldlenp; 1103 const void *new = newp; 1104 int i, s, error = EINVAL; 1105 u_char af; 1106 struct walkarg w; 1107 1108 if (namelen == 1 && name[0] == CTL_QUERY) 1109 return sysctl_query(SYSCTLFN_CALL(rnode)); 1110 1111 if (new) 1112 return EPERM; 1113 if (namelen != 3) 1114 return EINVAL; 1115 af = name[0]; 1116 w.w_tmemneeded = 0; 1117 w.w_tmemsize = 0; 1118 w.w_tmem = NULL; 1119 again: 1120 /* we may return here if a later [re]alloc of the t_mem buffer fails */ 1121 if (w.w_tmemneeded) { 1122 w.w_tmem = (void *) malloc(w.w_tmemneeded, M_RTABLE, M_WAITOK); 1123 w.w_tmemsize = w.w_tmemneeded; 1124 w.w_tmemneeded = 0; 1125 } 1126 w.w_op = name[1]; 1127 w.w_arg = name[2]; 1128 w.w_given = *given; 1129 w.w_needed = 0 - w.w_given; 1130 w.w_where = where; 1131 1132 s = splsoftnet(); 1133 switch (w.w_op) { 1134 1135 case NET_RT_DUMP: 1136 case NET_RT_FLAGS: 1137 for (i = 1; i <= AF_MAX; i++) 1138 if ((af == 0 || af == i) && 1139 (error = rt_walktree(i, sysctl_dumpentry, &w))) 1140 break; 1141 break; 1142 1143 #ifdef COMPAT_14 1144 case NET_RT_OIFLIST: 1145 error = sysctl_iflist(af, &w, w.w_op); 1146 break; 1147 #endif 1148 1149 case NET_RT_IFLIST: 1150 error = sysctl_iflist(af, &w, w.w_op); 1151 } 1152 splx(s); 1153 1154 /* check to see if we couldn't allocate memory with NOWAIT */ 1155 if (error == ENOBUFS && w.w_tmem == 0 && w.w_tmemneeded) 1156 goto again; 1157 1158 if (w.w_tmem) 1159 free(w.w_tmem, M_RTABLE); 1160 w.w_needed += w.w_given; 1161 if (where) { 1162 *given = (char *)w.w_where - (char *)where; 1163 if (*given < w.w_needed) 1164 return ENOMEM; 1165 } else { 1166 *given = (11 * w.w_needed) / 10; 1167 } 1168 return error; 1169 } 1170 1171 /* 1172 * Routing message software interrupt routine 1173 */ 1174 static void 1175 route_intr(void *cookie) 1176 { 1177 struct sockproto proto = { .sp_family = PF_ROUTE, }; 1178 struct mbuf *m; 1179 int s; 1180 1181 mutex_enter(softnet_lock); 1182 KERNEL_LOCK(1, NULL); 1183 while (!IF_IS_EMPTY(&route_intrq)) { 1184 s = splnet(); 1185 IF_DEQUEUE(&route_intrq, m); 1186 splx(s); 1187 if (m == NULL) 1188 break; 1189 proto.sp_protocol = M_GETCTX(m, uintptr_t); 1190 raw_input(m, &proto, &route_src, &route_dst); 1191 } 1192 KERNEL_UNLOCK_ONE(NULL); 1193 mutex_exit(softnet_lock); 1194 } 1195 1196 /* 1197 * Enqueue a message to the software interrupt routine. 1198 */ 1199 static void 1200 route_enqueue(struct mbuf *m, int family) 1201 { 1202 int s, wasempty; 1203 1204 s = splnet(); 1205 if (IF_QFULL(&route_intrq)) { 1206 IF_DROP(&route_intrq); 1207 m_freem(m); 1208 } else { 1209 wasempty = IF_IS_EMPTY(&route_intrq); 1210 M_SETCTX(m, (uintptr_t)family); 1211 IF_ENQUEUE(&route_intrq, m); 1212 if (wasempty) 1213 softint_schedule(route_sih); 1214 } 1215 splx(s); 1216 } 1217 1218 void 1219 rt_init(void) 1220 { 1221 1222 route_intrq.ifq_maxlen = route_maxqlen; 1223 route_sih = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1224 route_intr, NULL); 1225 } 1226 1227 /* 1228 * Definitions of protocols supported in the ROUTE domain. 1229 */ 1230 PR_WRAP_USRREQ(route_usrreq) 1231 #define route_usrreq route_usrreq_wrapper 1232 1233 const struct protosw routesw[] = { 1234 { 1235 .pr_type = SOCK_RAW, 1236 .pr_domain = &routedomain, 1237 .pr_flags = PR_ATOMIC|PR_ADDR, 1238 .pr_input = raw_input, 1239 .pr_output = route_output, 1240 .pr_ctlinput = raw_ctlinput, 1241 .pr_usrreq = route_usrreq, 1242 .pr_init = raw_init, 1243 }, 1244 }; 1245 1246 struct domain routedomain = { 1247 .dom_family = PF_ROUTE, 1248 .dom_name = "route", 1249 .dom_init = route_init, 1250 .dom_protosw = routesw, 1251 .dom_protoswNPROTOSW = &routesw[__arraycount(routesw)], 1252 }; 1253 1254 SYSCTL_SETUP(sysctl_net_route_setup, "sysctl net.route subtree setup") 1255 { 1256 const struct sysctlnode *rnode = NULL; 1257 1258 sysctl_createv(clog, 0, NULL, NULL, 1259 CTLFLAG_PERMANENT, 1260 CTLTYPE_NODE, "net", NULL, 1261 NULL, 0, NULL, 0, 1262 CTL_NET, CTL_EOL); 1263 1264 sysctl_createv(clog, 0, NULL, &rnode, 1265 CTLFLAG_PERMANENT, 1266 CTLTYPE_NODE, "route", 1267 SYSCTL_DESCR("PF_ROUTE information"), 1268 NULL, 0, NULL, 0, 1269 CTL_NET, PF_ROUTE, CTL_EOL); 1270 sysctl_createv(clog, 0, NULL, NULL, 1271 CTLFLAG_PERMANENT, 1272 CTLTYPE_NODE, "rtable", 1273 SYSCTL_DESCR("Routing table information"), 1274 sysctl_rtable, 0, NULL, 0, 1275 CTL_NET, PF_ROUTE, 0 /* any protocol */, CTL_EOL); 1276 sysctl_createv(clog, 0, &rnode, NULL, 1277 CTLFLAG_PERMANENT, 1278 CTLTYPE_STRUCT, "stats", 1279 SYSCTL_DESCR("Routing statistics"), 1280 NULL, 0, &rtstat, sizeof(rtstat), 1281 CTL_CREATE, CTL_EOL); 1282 } 1283