1 /* 2 * Copyright (c) 2004, 2005 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Jeffrey M. Hsu. 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 DragonFly Project nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific, prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 2004, 2005 Jeffrey M. Hsu. All rights reserved. 35 * 36 * License terms: all terms for the DragonFly license above plus the following: 37 * 38 * 4. All advertising materials mentioning features or use of this software 39 * must display the following acknowledgement: 40 * 41 * This product includes software developed by Jeffrey M. Hsu 42 * for the DragonFly Project. 43 * 44 * This requirement may be waived with permission from Jeffrey Hsu. 45 * Permission will be granted to any DragonFly user for free. 46 * This requirement will sunset and may be removed on Jan 31, 2006, 47 * after which the standard DragonFly license (as shown above) will 48 * apply. 49 */ 50 51 /* 52 * Copyright (c) 1988, 1991, 1993 53 * The Regents of the University of California. All rights reserved. 54 * 55 * Redistribution and use in source and binary forms, with or without 56 * modification, are permitted provided that the following conditions 57 * are met: 58 * 1. Redistributions of source code must retain the above copyright 59 * notice, this list of conditions and the following disclaimer. 60 * 2. Redistributions in binary form must reproduce the above copyright 61 * notice, this list of conditions and the following disclaimer in the 62 * documentation and/or other materials provided with the distribution. 63 * 3. All advertising materials mentioning features or use of this software 64 * must display the following acknowledgement: 65 * This product includes software developed by the University of 66 * California, Berkeley and its contributors. 67 * 4. Neither the name of the University nor the names of its contributors 68 * may be used to endorse or promote products derived from this software 69 * without specific prior written permission. 70 * 71 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 74 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 81 * SUCH DAMAGE. 82 * 83 * @(#)rtsock.c 8.7 (Berkeley) 10/12/95 84 * $FreeBSD: src/sys/net/rtsock.c,v 1.44.2.11 2002/12/04 14:05:41 ru Exp $ 85 * $DragonFly: src/sys/net/rtsock.c,v 1.30 2006/01/31 19:05:35 dillon Exp $ 86 */ 87 88 #include "opt_sctp.h" 89 90 #include <sys/param.h> 91 #include <sys/systm.h> 92 #include <sys/kernel.h> 93 #include <sys/sysctl.h> 94 #include <sys/proc.h> 95 #include <sys/malloc.h> 96 #include <sys/mbuf.h> 97 #include <sys/protosw.h> 98 #include <sys/socket.h> 99 #include <sys/socketvar.h> 100 #include <sys/domain.h> 101 #include <sys/thread2.h> 102 103 #include <net/if.h> 104 #include <net/route.h> 105 #include <net/raw_cb.h> 106 107 #ifdef SCTP 108 extern void sctp_add_ip_address(struct ifaddr *ifa); 109 extern void sctp_delete_ip_address(struct ifaddr *ifa); 110 #endif /* SCTP */ 111 112 MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); 113 114 static struct route_cb { 115 int ip_count; 116 int ip6_count; 117 int ipx_count; 118 int ns_count; 119 int any_count; 120 } route_cb; 121 122 static const struct sockaddr route_src = { 2, PF_ROUTE, }; 123 124 struct walkarg { 125 int w_tmemsize; 126 int w_op, w_arg; 127 void *w_tmem; 128 struct sysctl_req *w_req; 129 }; 130 131 static struct mbuf * 132 rt_msg_mbuf (int, struct rt_addrinfo *); 133 static void rt_msg_buffer (int, struct rt_addrinfo *, void *buf, int len); 134 static int rt_msgsize (int type, struct rt_addrinfo *rtinfo); 135 static int rt_xaddrs (char *, char *, struct rt_addrinfo *); 136 static int sysctl_dumpentry (struct radix_node *rn, void *vw); 137 static int sysctl_iflist (int af, struct walkarg *w); 138 static int route_output(struct mbuf *, struct socket *, ...); 139 static void rt_setmetrics (u_long, struct rt_metrics *, 140 struct rt_metrics *); 141 142 /* 143 * It really doesn't make any sense at all for this code to share much 144 * with raw_usrreq.c, since its functionality is so restricted. XXX 145 */ 146 static int 147 rts_abort(struct socket *so) 148 { 149 int error; 150 151 crit_enter(); 152 error = raw_usrreqs.pru_abort(so); 153 crit_exit(); 154 return error; 155 } 156 157 /* pru_accept is EOPNOTSUPP */ 158 159 static int 160 rts_attach(struct socket *so, int proto, struct pru_attach_info *ai) 161 { 162 struct rawcb *rp; 163 int error; 164 165 if (sotorawcb(so) != NULL) 166 return EISCONN; /* XXX panic? */ 167 168 rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO); 169 if (rp == NULL) 170 return ENOBUFS; 171 172 /* 173 * The critical section is necessary to block protocols from sending 174 * error notifications (like RTM_REDIRECT or RTM_LOSING) while 175 * this PCB is extant but incompletely initialized. 176 * Probably we should try to do more of this work beforehand and 177 * eliminate the critical section. 178 */ 179 crit_enter(); 180 so->so_pcb = rp; 181 error = raw_attach(so, proto, ai->sb_rlimit); 182 rp = sotorawcb(so); 183 if (error) { 184 crit_exit(); 185 free(rp, M_PCB); 186 return error; 187 } 188 switch(rp->rcb_proto.sp_protocol) { 189 case AF_INET: 190 route_cb.ip_count++; 191 break; 192 case AF_INET6: 193 route_cb.ip6_count++; 194 break; 195 case AF_IPX: 196 route_cb.ipx_count++; 197 break; 198 case AF_NS: 199 route_cb.ns_count++; 200 break; 201 } 202 rp->rcb_faddr = &route_src; 203 route_cb.any_count++; 204 soisconnected(so); 205 so->so_options |= SO_USELOOPBACK; 206 crit_exit(); 207 return 0; 208 } 209 210 static int 211 rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 212 { 213 int error; 214 215 crit_enter(); 216 error = raw_usrreqs.pru_bind(so, nam, td); /* xxx just EINVAL */ 217 crit_exit(); 218 return error; 219 } 220 221 static int 222 rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 223 { 224 int error; 225 226 crit_enter(); 227 error = raw_usrreqs.pru_connect(so, nam, td); /* XXX just EINVAL */ 228 crit_exit(); 229 return error; 230 } 231 232 /* pru_connect2 is EOPNOTSUPP */ 233 /* pru_control is EOPNOTSUPP */ 234 235 static int 236 rts_detach(struct socket *so) 237 { 238 struct rawcb *rp = sotorawcb(so); 239 int error; 240 241 crit_enter(); 242 if (rp != NULL) { 243 switch(rp->rcb_proto.sp_protocol) { 244 case AF_INET: 245 route_cb.ip_count--; 246 break; 247 case AF_INET6: 248 route_cb.ip6_count--; 249 break; 250 case AF_IPX: 251 route_cb.ipx_count--; 252 break; 253 case AF_NS: 254 route_cb.ns_count--; 255 break; 256 } 257 route_cb.any_count--; 258 } 259 error = raw_usrreqs.pru_detach(so); 260 crit_exit(); 261 return error; 262 } 263 264 static int 265 rts_disconnect(struct socket *so) 266 { 267 int error; 268 269 crit_enter(); 270 error = raw_usrreqs.pru_disconnect(so); 271 crit_exit(); 272 return error; 273 } 274 275 /* pru_listen is EOPNOTSUPP */ 276 277 static int 278 rts_peeraddr(struct socket *so, struct sockaddr **nam) 279 { 280 int error; 281 282 crit_enter(); 283 error = raw_usrreqs.pru_peeraddr(so, nam); 284 crit_exit(); 285 return error; 286 } 287 288 /* pru_rcvd is EOPNOTSUPP */ 289 /* pru_rcvoob is EOPNOTSUPP */ 290 291 static int 292 rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 293 struct mbuf *control, struct thread *td) 294 { 295 int error; 296 297 crit_enter(); 298 error = raw_usrreqs.pru_send(so, flags, m, nam, control, td); 299 crit_exit(); 300 return error; 301 } 302 303 /* pru_sense is null */ 304 305 static int 306 rts_shutdown(struct socket *so) 307 { 308 int error; 309 310 crit_enter(); 311 error = raw_usrreqs.pru_shutdown(so); 312 crit_exit(); 313 return error; 314 } 315 316 static int 317 rts_sockaddr(struct socket *so, struct sockaddr **nam) 318 { 319 int error; 320 321 crit_enter(); 322 error = raw_usrreqs.pru_sockaddr(so, nam); 323 crit_exit(); 324 return error; 325 } 326 327 static struct pr_usrreqs route_usrreqs = { 328 rts_abort, pru_accept_notsupp, rts_attach, rts_bind, rts_connect, 329 pru_connect2_notsupp, pru_control_notsupp, rts_detach, rts_disconnect, 330 pru_listen_notsupp, rts_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp, 331 rts_send, pru_sense_null, rts_shutdown, rts_sockaddr, 332 sosend, soreceive, sopoll 333 }; 334 335 static __inline sa_family_t 336 familyof(struct sockaddr *sa) 337 { 338 return (sa != NULL ? sa->sa_family : 0); 339 } 340 341 static void 342 rts_input(struct mbuf *m, sa_family_t family) 343 { 344 static const struct sockaddr route_dst = { 2, PF_ROUTE, }; 345 struct sockproto route_proto = { PF_ROUTE, family }; 346 347 raw_input(m, &route_proto, &route_src, &route_dst); 348 } 349 350 static void * 351 reallocbuf(void *ptr, size_t len, size_t olen) 352 { 353 void *newptr; 354 355 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK); 356 if (newptr == NULL) 357 return NULL; 358 bcopy(ptr, newptr, olen); 359 free(ptr, M_RTABLE); 360 return (newptr); 361 } 362 363 /* 364 * Internal helper routine for route_output(). 365 */ 366 static int 367 fillrtmsg(struct rt_msghdr **prtm, struct rtentry *rt, 368 struct rt_addrinfo *rtinfo) 369 { 370 int msglen; 371 struct rt_msghdr *rtm = *prtm; 372 373 /* Fill in rt_addrinfo for call to rt_msg_buffer(). */ 374 rtinfo->rti_dst = rt_key(rt); 375 rtinfo->rti_gateway = rt->rt_gateway; 376 rtinfo->rti_netmask = rt_mask(rt); /* might be NULL */ 377 rtinfo->rti_genmask = rt->rt_genmask; /* might be NULL */ 378 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 379 if (rt->rt_ifp != NULL) { 380 rtinfo->rti_ifpaddr = 381 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr; 382 rtinfo->rti_ifaaddr = rt->rt_ifa->ifa_addr; 383 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 384 rtinfo->rti_bcastaddr = rt->rt_ifa->ifa_dstaddr; 385 rtm->rtm_index = rt->rt_ifp->if_index; 386 } else { 387 rtinfo->rti_ifpaddr = NULL; 388 rtinfo->rti_ifaaddr = NULL; 389 } 390 } 391 392 msglen = rt_msgsize(rtm->rtm_type, rtinfo); 393 if (rtm->rtm_msglen < msglen) { 394 rtm = reallocbuf(rtm, msglen, rtm->rtm_msglen); 395 if (rtm == NULL) 396 return (ENOBUFS); 397 *prtm = rtm; 398 } 399 rt_msg_buffer(rtm->rtm_type, rtinfo, rtm, msglen); 400 401 rtm->rtm_flags = rt->rt_flags; 402 rtm->rtm_rmx = rt->rt_rmx; 403 rtm->rtm_addrs = rtinfo->rti_addrs; 404 405 return (0); 406 } 407 408 static void route_output_add_callback(int, int, struct rt_addrinfo *, 409 struct rtentry *, void *); 410 static void route_output_delete_callback(int, int, struct rt_addrinfo *, 411 struct rtentry *, void *); 412 static void route_output_change_callback(int, int, struct rt_addrinfo *, 413 struct rtentry *, void *); 414 static void route_output_lock_callback(int, int, struct rt_addrinfo *, 415 struct rtentry *, void *); 416 417 /*ARGSUSED*/ 418 static int 419 route_output(struct mbuf *m, struct socket *so, ...) 420 { 421 struct rt_msghdr *rtm = NULL; 422 struct rtentry *rt; 423 struct radix_node_head *rnh; 424 struct rawcb *rp = NULL; 425 struct pr_output_info *oi; 426 struct rt_addrinfo rtinfo; 427 int len, error = 0; 428 __va_list ap; 429 430 __va_start(ap, so); 431 oi = __va_arg(ap, struct pr_output_info *); 432 __va_end(ap); 433 434 #define gotoerr(e) { error = e; goto flush;} 435 436 if (m == NULL || 437 (m->m_len < sizeof(long) && 438 (m = m_pullup(m, sizeof(long))) == NULL)) 439 return (ENOBUFS); 440 if (!(m->m_flags & M_PKTHDR)) 441 panic("route_output"); 442 len = m->m_pkthdr.len; 443 if (len < sizeof(struct rt_msghdr) || 444 len != mtod(m, struct rt_msghdr *)->rtm_msglen) { 445 rtinfo.rti_dst = NULL; 446 gotoerr(EINVAL); 447 } 448 rtm = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK); 449 if (rtm == NULL) { 450 rtinfo.rti_dst = NULL; 451 gotoerr(ENOBUFS); 452 } 453 m_copydata(m, 0, len, (caddr_t)rtm); 454 if (rtm->rtm_version != RTM_VERSION) { 455 rtinfo.rti_dst = NULL; 456 gotoerr(EPROTONOSUPPORT); 457 } 458 rtm->rtm_pid = oi->p_pid; 459 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 460 rtinfo.rti_addrs = rtm->rtm_addrs; 461 if (rt_xaddrs((char *)(rtm + 1), (char *)rtm + len, &rtinfo) != 0) { 462 rtinfo.rti_dst = NULL; 463 gotoerr(EINVAL); 464 } 465 rtinfo.rti_flags = rtm->rtm_flags; 466 if (rtinfo.rti_dst == NULL || rtinfo.rti_dst->sa_family >= AF_MAX || 467 (rtinfo.rti_gateway && rtinfo.rti_gateway->sa_family >= AF_MAX)) 468 gotoerr(EINVAL); 469 470 if (rtinfo.rti_genmask != NULL) { 471 struct radix_node *n; 472 473 #define clen(s) (*(u_char *)(s)) 474 n = rn_addmask((char *)rtinfo.rti_genmask, TRUE, 1); 475 if (n != NULL && 476 rtinfo.rti_genmask->sa_len >= clen(n->rn_key) && 477 bcmp((char *)rtinfo.rti_genmask + 1, 478 (char *)n->rn_key + 1, clen(n->rn_key) - 1) == 0) 479 rtinfo.rti_genmask = (struct sockaddr *)n->rn_key; 480 else 481 gotoerr(ENOBUFS); 482 } 483 484 /* 485 * Verify that the caller has the appropriate privilege; RTM_GET 486 * is the only operation the non-superuser is allowed. 487 */ 488 if (rtm->rtm_type != RTM_GET && suser_cred(so->so_cred, 0) != 0) 489 gotoerr(EPERM); 490 491 switch (rtm->rtm_type) { 492 case RTM_ADD: 493 if (rtinfo.rti_gateway == NULL) { 494 error = EINVAL; 495 } else { 496 error = rtrequest1_global(RTM_ADD, &rtinfo, 497 route_output_add_callback, rtm); 498 } 499 break; 500 case RTM_DELETE: 501 /* 502 * note: &rtm passed as argument so 'rtm' can be replaced. 503 */ 504 error = rtrequest1_global(RTM_DELETE, &rtinfo, 505 route_output_delete_callback, &rtm); 506 break; 507 case RTM_GET: 508 rnh = rt_tables[mycpuid][rtinfo.rti_dst->sa_family]; 509 if (rnh == NULL) { 510 error = EAFNOSUPPORT; 511 break; 512 } 513 rt = (struct rtentry *) 514 rnh->rnh_lookup((char *)rtinfo.rti_dst, 515 (char *)rtinfo.rti_netmask, rnh); 516 if (rt == NULL) { 517 error = ESRCH; 518 break; 519 } 520 rt->rt_refcnt++; 521 if (fillrtmsg(&rtm, rt, &rtinfo) != 0) 522 gotoerr(ENOBUFS); 523 --rt->rt_refcnt; 524 break; 525 case RTM_CHANGE: 526 error = rtrequest1_global(RTM_GET, &rtinfo, 527 route_output_change_callback, rtm); 528 break; 529 case RTM_LOCK: 530 error = rtrequest1_global(RTM_GET, &rtinfo, 531 route_output_lock_callback, rtm); 532 break; 533 default: 534 error = EOPNOTSUPP; 535 break; 536 } 537 538 flush: 539 if (rtm != NULL) { 540 if (error != 0) 541 rtm->rtm_errno = error; 542 else 543 rtm->rtm_flags |= RTF_DONE; 544 } 545 546 /* 547 * Check to see if we don't want our own messages. 548 */ 549 if (!(so->so_options & SO_USELOOPBACK)) { 550 if (route_cb.any_count <= 1) { 551 if (rtm != NULL) 552 free(rtm, M_RTABLE); 553 m_freem(m); 554 return (error); 555 } 556 /* There is another listener, so construct message */ 557 rp = sotorawcb(so); 558 } 559 if (rtm != NULL) { 560 m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); 561 if (m->m_pkthdr.len < rtm->rtm_msglen) { 562 m_freem(m); 563 m = NULL; 564 } else if (m->m_pkthdr.len > rtm->rtm_msglen) 565 m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); 566 free(rtm, M_RTABLE); 567 } 568 if (rp != NULL) 569 rp->rcb_proto.sp_family = 0; /* Avoid us */ 570 if (m != NULL) 571 rts_input(m, familyof(rtinfo.rti_dst)); 572 if (rp != NULL) 573 rp->rcb_proto.sp_family = PF_ROUTE; 574 return (error); 575 } 576 577 static void 578 route_output_add_callback(int cmd, int error, struct rt_addrinfo *rtinfo, 579 struct rtentry *rt, void *arg) 580 { 581 struct rt_msghdr *rtm = arg; 582 583 if (error == 0 && rt != NULL) { 584 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, 585 &rt->rt_rmx); 586 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 587 rt->rt_rmx.rmx_locks |= 588 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 589 rt->rt_genmask = rtinfo->rti_genmask; 590 } 591 } 592 593 static void 594 route_output_delete_callback(int cmd, int error, struct rt_addrinfo *rtinfo, 595 struct rtentry *rt, void *arg) 596 { 597 struct rt_msghdr **rtm = arg; 598 599 if (error == 0 && rt) { 600 ++rt->rt_refcnt; 601 if (fillrtmsg(rtm, rt, rtinfo) != 0) { 602 error = ENOBUFS; 603 /* XXX no way to return the error */ 604 } 605 --rt->rt_refcnt; 606 } 607 } 608 609 static void 610 route_output_change_callback(int cmd, int error, struct rt_addrinfo *rtinfo, 611 struct rtentry *rt, void *arg) 612 { 613 struct rt_msghdr *rtm = arg; 614 struct ifaddr *ifa; 615 616 if (error) 617 goto done; 618 619 /* 620 * new gateway could require new ifaddr, ifp; 621 * flags may also be different; ifp may be specified 622 * by ll sockaddr when protocol address is ambiguous 623 */ 624 if (((rt->rt_flags & RTF_GATEWAY) && rtinfo->rti_gateway != NULL) || 625 rtinfo->rti_ifpaddr != NULL || (rtinfo->rti_ifaaddr != NULL && 626 sa_equal(rtinfo->rti_ifaaddr, rt->rt_ifa->ifa_addr)) 627 ) { 628 error = rt_getifa(rtinfo); 629 if (error != 0) 630 goto done; 631 } 632 if (rtinfo->rti_gateway != NULL) { 633 error = rt_setgate(rt, rt_key(rt), rtinfo->rti_gateway); 634 if (error != 0) 635 goto done; 636 } 637 if ((ifa = rtinfo->rti_ifa) != NULL) { 638 struct ifaddr *oifa = rt->rt_ifa; 639 640 if (oifa != ifa) { 641 if (oifa && oifa->ifa_rtrequest) 642 oifa->ifa_rtrequest(RTM_DELETE, rt, rtinfo); 643 IFAFREE(rt->rt_ifa); 644 IFAREF(ifa); 645 rt->rt_ifa = ifa; 646 rt->rt_ifp = rtinfo->rti_ifp; 647 } 648 } 649 rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, &rt->rt_rmx); 650 if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) 651 rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, rtinfo); 652 if (rtinfo->rti_genmask != NULL) 653 rt->rt_genmask = rtinfo->rti_genmask; 654 done: 655 /* XXX no way to return error */ 656 ; 657 } 658 659 static void 660 route_output_lock_callback(int cmd, int error, struct rt_addrinfo *rtinfo, 661 struct rtentry *rt, void *arg) 662 { 663 struct rt_msghdr *rtm = arg; 664 665 rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits); 666 rt->rt_rmx.rmx_locks |= 667 (rtm->rtm_inits & rtm->rtm_rmx.rmx_locks); 668 } 669 670 static void 671 rt_setmetrics(u_long which, struct rt_metrics *in, struct rt_metrics *out) 672 { 673 #define setmetric(flag, elt) if (which & (flag)) out->elt = in->elt; 674 setmetric(RTV_RPIPE, rmx_recvpipe); 675 setmetric(RTV_SPIPE, rmx_sendpipe); 676 setmetric(RTV_SSTHRESH, rmx_ssthresh); 677 setmetric(RTV_RTT, rmx_rtt); 678 setmetric(RTV_RTTVAR, rmx_rttvar); 679 setmetric(RTV_HOPCOUNT, rmx_hopcount); 680 setmetric(RTV_MTU, rmx_mtu); 681 setmetric(RTV_EXPIRE, rmx_expire); 682 #undef setmetric 683 } 684 685 #define ROUNDUP(a) \ 686 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 687 688 /* 689 * Extract the addresses of the passed sockaddrs. 690 * Do a little sanity checking so as to avoid bad memory references. 691 * This data is derived straight from userland. 692 */ 693 static int 694 rt_xaddrs(char *cp, char *cplim, struct rt_addrinfo *rtinfo) 695 { 696 struct sockaddr *sa; 697 int i; 698 699 for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { 700 if ((rtinfo->rti_addrs & (1 << i)) == 0) 701 continue; 702 sa = (struct sockaddr *)cp; 703 /* 704 * It won't fit. 705 */ 706 if ((cp + sa->sa_len) > cplim) { 707 return (EINVAL); 708 } 709 710 /* 711 * There are no more... Quit now. 712 * If there are more bits, they are in error. 713 * I've seen this. route(1) can evidently generate these. 714 * This causes kernel to core dump. 715 * For compatibility, if we see this, point to a safe address. 716 */ 717 if (sa->sa_len == 0) { 718 static struct sockaddr sa_zero = { 719 sizeof sa_zero, AF_INET, 720 }; 721 722 rtinfo->rti_info[i] = &sa_zero; 723 return (0); /* should be EINVAL but for compat */ 724 } 725 726 /* Accept the sockaddr. */ 727 rtinfo->rti_info[i] = sa; 728 cp += ROUNDUP(sa->sa_len); 729 } 730 return (0); 731 } 732 733 static int 734 rt_msghdrsize(int type) 735 { 736 switch (type) { 737 case RTM_DELADDR: 738 case RTM_NEWADDR: 739 return sizeof(struct ifa_msghdr); 740 case RTM_DELMADDR: 741 case RTM_NEWMADDR: 742 return sizeof(struct ifma_msghdr); 743 case RTM_IFINFO: 744 return sizeof(struct if_msghdr); 745 case RTM_IFANNOUNCE: 746 return sizeof(struct if_announcemsghdr); 747 default: 748 return sizeof(struct rt_msghdr); 749 } 750 } 751 752 static int 753 rt_msgsize(int type, struct rt_addrinfo *rtinfo) 754 { 755 int len, i; 756 757 len = rt_msghdrsize(type); 758 for (i = 0; i < RTAX_MAX; i++) { 759 if (rtinfo->rti_info[i] != NULL) 760 len += ROUNDUP(rtinfo->rti_info[i]->sa_len); 761 } 762 len = ALIGN(len); 763 return len; 764 } 765 766 /* 767 * Build a routing message in a buffer. 768 * Copy the addresses in the rtinfo->rti_info[] sockaddr array 769 * to the end of the buffer after the message header. 770 * 771 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[]. 772 * This side-effect can be avoided if we reorder the addrs bitmask field in all 773 * the route messages to line up so we can set it here instead of back in the 774 * calling routine. 775 */ 776 static void 777 rt_msg_buffer(int type, struct rt_addrinfo *rtinfo, void *buf, int msglen) 778 { 779 struct rt_msghdr *rtm; 780 char *cp; 781 int dlen, i; 782 783 rtm = (struct rt_msghdr *) buf; 784 rtm->rtm_version = RTM_VERSION; 785 rtm->rtm_type = type; 786 rtm->rtm_msglen = msglen; 787 788 cp = (char *)buf + rt_msghdrsize(type); 789 rtinfo->rti_addrs = 0; 790 for (i = 0; i < RTAX_MAX; i++) { 791 struct sockaddr *sa; 792 793 if ((sa = rtinfo->rti_info[i]) == NULL) 794 continue; 795 rtinfo->rti_addrs |= (1 << i); 796 dlen = ROUNDUP(sa->sa_len); 797 bcopy(sa, cp, dlen); 798 cp += dlen; 799 } 800 } 801 802 /* 803 * Build a routing message in a mbuf chain. 804 * Copy the addresses in the rtinfo->rti_info[] sockaddr array 805 * to the end of the mbuf after the message header. 806 * 807 * Set the rtinfo->rti_addrs bitmask of addresses present in rtinfo->rti_info[]. 808 * This side-effect can be avoided if we reorder the addrs bitmask field in all 809 * the route messages to line up so we can set it here instead of back in the 810 * calling routine. 811 */ 812 static struct mbuf * 813 rt_msg_mbuf(int type, struct rt_addrinfo *rtinfo) 814 { 815 struct mbuf *m; 816 struct rt_msghdr *rtm; 817 int hlen, len; 818 int i; 819 820 hlen = rt_msghdrsize(type); 821 KASSERT(hlen <= MCLBYTES, ("rt_msg_mbuf: hlen %d doesn't fit", hlen)); 822 823 m = m_getl(hlen, MB_DONTWAIT, MT_DATA, M_PKTHDR, NULL); 824 if (m == NULL) 825 return (NULL); 826 m->m_pkthdr.len = m->m_len = hlen; 827 m->m_pkthdr.rcvif = NULL; 828 rtinfo->rti_addrs = 0; 829 len = hlen; 830 for (i = 0; i < RTAX_MAX; i++) { 831 struct sockaddr *sa; 832 int dlen; 833 834 if ((sa = rtinfo->rti_info[i]) == NULL) 835 continue; 836 rtinfo->rti_addrs |= (1 << i); 837 dlen = ROUNDUP(sa->sa_len); 838 m_copyback(m, len, dlen, (caddr_t)sa); /* can grow mbuf chain */ 839 len += dlen; 840 } 841 if (m->m_pkthdr.len != len) { /* one of the m_copyback() calls failed */ 842 m_freem(m); 843 return (NULL); 844 } 845 rtm = mtod(m, struct rt_msghdr *); 846 bzero(rtm, hlen); 847 rtm->rtm_msglen = len; 848 rtm->rtm_version = RTM_VERSION; 849 rtm->rtm_type = type; 850 return (m); 851 } 852 853 /* 854 * This routine is called to generate a message from the routing 855 * socket indicating that a redirect has occurred, a routing lookup 856 * has failed, or that a protocol has detected timeouts to a particular 857 * destination. 858 */ 859 void 860 rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) 861 { 862 struct sockaddr *dst = rtinfo->rti_info[RTAX_DST]; 863 struct rt_msghdr *rtm; 864 struct mbuf *m; 865 866 if (route_cb.any_count == 0) 867 return; 868 m = rt_msg_mbuf(type, rtinfo); 869 if (m == NULL) 870 return; 871 rtm = mtod(m, struct rt_msghdr *); 872 rtm->rtm_flags = RTF_DONE | flags; 873 rtm->rtm_errno = error; 874 rtm->rtm_addrs = rtinfo->rti_addrs; 875 rts_input(m, familyof(dst)); 876 } 877 878 void 879 rt_dstmsg(int type, struct sockaddr *dst, int error) 880 { 881 struct rt_msghdr *rtm; 882 struct rt_addrinfo addrs; 883 struct mbuf *m; 884 885 if (route_cb.any_count == 0) 886 return; 887 bzero(&addrs, sizeof(struct rt_addrinfo)); 888 addrs.rti_info[RTAX_DST] = dst; 889 m = rt_msg_mbuf(type, &addrs); 890 if (m == NULL) 891 return; 892 rtm = mtod(m, struct rt_msghdr *); 893 rtm->rtm_flags = RTF_DONE; 894 rtm->rtm_errno = error; 895 rtm->rtm_addrs = addrs.rti_addrs; 896 rts_input(m, familyof(dst)); 897 } 898 899 /* 900 * This routine is called to generate a message from the routing 901 * socket indicating that the status of a network interface has changed. 902 */ 903 void 904 rt_ifmsg(struct ifnet *ifp) 905 { 906 struct if_msghdr *ifm; 907 struct mbuf *m; 908 struct rt_addrinfo rtinfo; 909 910 if (route_cb.any_count == 0) 911 return; 912 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 913 m = rt_msg_mbuf(RTM_IFINFO, &rtinfo); 914 if (m == NULL) 915 return; 916 ifm = mtod(m, struct if_msghdr *); 917 ifm->ifm_index = ifp->if_index; 918 ifm->ifm_flags = ifp->if_flags; 919 ifm->ifm_data = ifp->if_data; 920 ifm->ifm_addrs = 0; 921 rts_input(m, 0); 922 } 923 924 static void 925 rt_ifamsg(int cmd, struct ifaddr *ifa) 926 { 927 struct ifa_msghdr *ifam; 928 struct rt_addrinfo rtinfo; 929 struct mbuf *m; 930 struct ifnet *ifp = ifa->ifa_ifp; 931 932 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 933 rtinfo.rti_ifaaddr = ifa->ifa_addr; 934 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr; 935 rtinfo.rti_netmask = ifa->ifa_netmask; 936 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr; 937 938 m = rt_msg_mbuf(cmd, &rtinfo); 939 if (m == NULL) 940 return; 941 942 ifam = mtod(m, struct ifa_msghdr *); 943 ifam->ifam_index = ifp->if_index; 944 ifam->ifam_metric = ifa->ifa_metric; 945 ifam->ifam_flags = ifa->ifa_flags; 946 ifam->ifam_addrs = rtinfo.rti_addrs; 947 948 rts_input(m, familyof(ifa->ifa_addr)); 949 } 950 951 void 952 rt_rtmsg(int cmd, struct rtentry *rt, struct ifnet *ifp, int error) 953 { 954 struct rt_msghdr *rtm; 955 struct rt_addrinfo rtinfo; 956 struct mbuf *m; 957 struct sockaddr *dst; 958 959 if (rt == NULL) 960 return; 961 962 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 963 rtinfo.rti_dst = dst = rt_key(rt); 964 rtinfo.rti_gateway = rt->rt_gateway; 965 rtinfo.rti_netmask = rt_mask(rt); 966 if (ifp != NULL) 967 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr; 968 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr; 969 970 m = rt_msg_mbuf(cmd, &rtinfo); 971 if (m == NULL) 972 return; 973 974 rtm = mtod(m, struct rt_msghdr *); 975 if (ifp != NULL) 976 rtm->rtm_index = ifp->if_index; 977 rtm->rtm_flags |= rt->rt_flags; 978 rtm->rtm_errno = error; 979 rtm->rtm_addrs = rtinfo.rti_addrs; 980 981 rts_input(m, familyof(dst)); 982 } 983 984 /* 985 * This is called to generate messages from the routing socket 986 * indicating a network interface has had addresses associated with it. 987 * if we ever reverse the logic and replace messages TO the routing 988 * socket indicate a request to configure interfaces, then it will 989 * be unnecessary as the routing socket will automatically generate 990 * copies of it. 991 */ 992 void 993 rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) 994 { 995 #ifdef SCTP 996 /* 997 * notify the SCTP stack 998 * this will only get called when an address is added/deleted 999 * XXX pass the ifaddr struct instead if ifa->ifa_addr... 1000 */ 1001 if (cmd == RTM_ADD) 1002 sctp_add_ip_address(ifa); 1003 else if (cmd == RTM_DELETE) 1004 sctp_delete_ip_address(ifa); 1005 #endif /* SCTP */ 1006 1007 if (route_cb.any_count == 0) 1008 return; 1009 1010 if (cmd == RTM_ADD) { 1011 rt_ifamsg(RTM_NEWADDR, ifa); 1012 rt_rtmsg(RTM_ADD, rt, ifa->ifa_ifp, error); 1013 } else { 1014 KASSERT((cmd == RTM_DELETE), ("unknown cmd %d", cmd)); 1015 rt_rtmsg(RTM_DELETE, rt, ifa->ifa_ifp, error); 1016 rt_ifamsg(RTM_DELADDR, ifa); 1017 } 1018 } 1019 1020 /* 1021 * This is the analogue to the rt_newaddrmsg which performs the same 1022 * function but for multicast group memberhips. This is easier since 1023 * there is no route state to worry about. 1024 */ 1025 void 1026 rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) 1027 { 1028 struct rt_addrinfo rtinfo; 1029 struct mbuf *m = NULL; 1030 struct ifnet *ifp = ifma->ifma_ifp; 1031 struct ifma_msghdr *ifmam; 1032 1033 if (route_cb.any_count == 0) 1034 return; 1035 1036 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 1037 rtinfo.rti_ifaaddr = ifma->ifma_addr; 1038 if (ifp != NULL && !TAILQ_EMPTY(&ifp->if_addrhead)) 1039 rtinfo.rti_ifpaddr = TAILQ_FIRST(&ifp->if_addrhead)->ifa_addr; 1040 /* 1041 * If a link-layer address is present, present it as a ``gateway'' 1042 * (similarly to how ARP entries, e.g., are presented). 1043 */ 1044 rtinfo.rti_gateway = ifma->ifma_lladdr; 1045 1046 m = rt_msg_mbuf(cmd, &rtinfo); 1047 if (m == NULL) 1048 return; 1049 1050 ifmam = mtod(m, struct ifma_msghdr *); 1051 ifmam->ifmam_index = ifp->if_index; 1052 ifmam->ifmam_addrs = rtinfo.rti_addrs; 1053 1054 rts_input(m, familyof(ifma->ifma_addr)); 1055 } 1056 1057 /* 1058 * This is called to generate routing socket messages indicating 1059 * network interface arrival and departure. 1060 */ 1061 void 1062 rt_ifannouncemsg(struct ifnet *ifp, int what) 1063 { 1064 struct rt_addrinfo addrinfo; 1065 struct mbuf *m; 1066 struct if_announcemsghdr *ifan; 1067 1068 if (route_cb.any_count == 0) 1069 return; 1070 1071 bzero(&addrinfo, sizeof addrinfo); 1072 m = rt_msg_mbuf(RTM_IFANNOUNCE, &addrinfo); 1073 if (m == NULL) 1074 return; 1075 1076 ifan = mtod(m, struct if_announcemsghdr *); 1077 ifan->ifan_index = ifp->if_index; 1078 strlcpy(ifan->ifan_name, ifp->if_xname, sizeof ifan->ifan_name); 1079 ifan->ifan_what = what; 1080 1081 rts_input(m, 0); 1082 } 1083 1084 static int 1085 resizewalkarg(struct walkarg *w, int len) 1086 { 1087 void *newptr; 1088 1089 newptr = malloc(len, M_RTABLE, M_INTWAIT | M_NULLOK); 1090 if (newptr == NULL) 1091 return (ENOMEM); 1092 if (w->w_tmem != NULL) 1093 free(w->w_tmem, M_RTABLE); 1094 w->w_tmem = newptr; 1095 w->w_tmemsize = len; 1096 return (0); 1097 } 1098 1099 /* 1100 * This is used in dumping the kernel table via sysctl(). 1101 */ 1102 int 1103 sysctl_dumpentry(struct radix_node *rn, void *vw) 1104 { 1105 struct walkarg *w = vw; 1106 struct rtentry *rt = (struct rtentry *)rn; 1107 struct rt_addrinfo rtinfo; 1108 int error, msglen; 1109 1110 if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) 1111 return 0; 1112 1113 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 1114 rtinfo.rti_dst = rt_key(rt); 1115 rtinfo.rti_gateway = rt->rt_gateway; 1116 rtinfo.rti_netmask = rt_mask(rt); 1117 rtinfo.rti_genmask = rt->rt_genmask; 1118 if (rt->rt_ifp != NULL) { 1119 rtinfo.rti_ifpaddr = 1120 TAILQ_FIRST(&rt->rt_ifp->if_addrhead)->ifa_addr; 1121 rtinfo.rti_ifaaddr = rt->rt_ifa->ifa_addr; 1122 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1123 rtinfo.rti_bcastaddr = rt->rt_ifa->ifa_dstaddr; 1124 } 1125 msglen = rt_msgsize(RTM_GET, &rtinfo); 1126 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0) 1127 return (ENOMEM); 1128 rt_msg_buffer(RTM_GET, &rtinfo, w->w_tmem, msglen); 1129 if (w->w_req != NULL) { 1130 struct rt_msghdr *rtm = w->w_tmem; 1131 1132 rtm->rtm_flags = rt->rt_flags; 1133 rtm->rtm_use = rt->rt_use; 1134 rtm->rtm_rmx = rt->rt_rmx; 1135 rtm->rtm_index = rt->rt_ifp->if_index; 1136 rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; 1137 rtm->rtm_addrs = rtinfo.rti_addrs; 1138 error = SYSCTL_OUT(w->w_req, rtm, msglen); 1139 return (error); 1140 } 1141 return (0); 1142 } 1143 1144 static int 1145 sysctl_iflist(int af, struct walkarg *w) 1146 { 1147 struct ifnet *ifp; 1148 struct ifaddr *ifa; 1149 struct rt_addrinfo rtinfo; 1150 int msglen, error; 1151 1152 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 1153 TAILQ_FOREACH(ifp, &ifnet, if_link) { 1154 if (w->w_arg && w->w_arg != ifp->if_index) 1155 continue; 1156 ifa = TAILQ_FIRST(&ifp->if_addrhead); 1157 rtinfo.rti_ifpaddr = ifa->ifa_addr; 1158 msglen = rt_msgsize(RTM_IFINFO, &rtinfo); 1159 if (w->w_tmemsize < msglen && resizewalkarg(w, msglen) != 0) 1160 return (ENOMEM); 1161 rt_msg_buffer(RTM_IFINFO, &rtinfo, w->w_tmem, msglen); 1162 rtinfo.rti_ifpaddr = NULL; 1163 if (w->w_req != NULL && w->w_tmem != NULL) { 1164 struct if_msghdr *ifm = w->w_tmem; 1165 1166 ifm->ifm_index = ifp->if_index; 1167 ifm->ifm_flags = ifp->if_flags; 1168 ifm->ifm_data = ifp->if_data; 1169 ifm->ifm_addrs = rtinfo.rti_addrs; 1170 error = SYSCTL_OUT(w->w_req, ifm, msglen); 1171 if (error) 1172 return (error); 1173 } 1174 while ((ifa = TAILQ_NEXT(ifa, ifa_link)) != NULL) { 1175 if (af && af != ifa->ifa_addr->sa_family) 1176 continue; 1177 if (curproc->p_ucred->cr_prison && 1178 prison_if(curthread, ifa->ifa_addr)) 1179 continue; 1180 rtinfo.rti_ifaaddr = ifa->ifa_addr; 1181 rtinfo.rti_netmask = ifa->ifa_netmask; 1182 rtinfo.rti_bcastaddr = ifa->ifa_dstaddr; 1183 msglen = rt_msgsize(RTM_NEWADDR, &rtinfo); 1184 if (w->w_tmemsize < msglen && 1185 resizewalkarg(w, msglen) != 0) 1186 return (ENOMEM); 1187 rt_msg_buffer(RTM_NEWADDR, &rtinfo, w->w_tmem, msglen); 1188 if (w->w_req != NULL) { 1189 struct ifa_msghdr *ifam = w->w_tmem; 1190 1191 ifam->ifam_index = ifa->ifa_ifp->if_index; 1192 ifam->ifam_flags = ifa->ifa_flags; 1193 ifam->ifam_metric = ifa->ifa_metric; 1194 ifam->ifam_addrs = rtinfo.rti_addrs; 1195 error = SYSCTL_OUT(w->w_req, w->w_tmem, msglen); 1196 if (error) 1197 return (error); 1198 } 1199 } 1200 rtinfo.rti_netmask = NULL; 1201 rtinfo.rti_ifaaddr = NULL; 1202 rtinfo.rti_bcastaddr = NULL; 1203 } 1204 return (0); 1205 } 1206 1207 static int 1208 sysctl_rtsock(SYSCTL_HANDLER_ARGS) 1209 { 1210 int *name = (int *)arg1; 1211 u_int namelen = arg2; 1212 struct radix_node_head *rnh; 1213 int i, error = EINVAL; 1214 int origcpu; 1215 u_char af; 1216 struct walkarg w; 1217 1218 name ++; 1219 namelen--; 1220 if (req->newptr) 1221 return (EPERM); 1222 if (namelen != 3 && namelen != 4) 1223 return (EINVAL); 1224 af = name[0]; 1225 bzero(&w, sizeof w); 1226 w.w_op = name[1]; 1227 w.w_arg = name[2]; 1228 w.w_req = req; 1229 1230 /* 1231 * Optional third argument specifies cpu, used primarily for 1232 * debugging the route table. 1233 */ 1234 if (namelen == 4) { 1235 if (name[3] < 0 || name[3] >= ncpus) 1236 return (EINVAL); 1237 origcpu = mycpuid; 1238 lwkt_migratecpu(name[3]); 1239 } else { 1240 origcpu = -1; 1241 } 1242 crit_enter(); 1243 switch (w.w_op) { 1244 case NET_RT_DUMP: 1245 case NET_RT_FLAGS: 1246 for (i = 1; i <= AF_MAX; i++) 1247 if ((rnh = rt_tables[mycpuid][i]) && 1248 (af == 0 || af == i) && 1249 (error = rnh->rnh_walktree(rnh, 1250 sysctl_dumpentry, &w))) 1251 break; 1252 break; 1253 1254 case NET_RT_IFLIST: 1255 error = sysctl_iflist(af, &w); 1256 } 1257 crit_exit(); 1258 if (w.w_tmem != NULL) 1259 free(w.w_tmem, M_RTABLE); 1260 if (origcpu >= 0) 1261 lwkt_migratecpu(origcpu); 1262 return (error); 1263 } 1264 1265 SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); 1266 1267 /* 1268 * Definitions of protocols supported in the ROUTE domain. 1269 */ 1270 1271 extern struct domain routedomain; /* or at least forward */ 1272 1273 static struct protosw routesw[] = { 1274 { SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR, 1275 0, route_output, raw_ctlinput, 0, 1276 cpu0_soport, 1277 raw_init, 0, 0, 0, 1278 &route_usrreqs 1279 } 1280 }; 1281 1282 static struct domain routedomain = { 1283 PF_ROUTE, "route", NULL, NULL, NULL, 1284 routesw, &routesw[(sizeof routesw)/(sizeof routesw[0])], 1285 }; 1286 1287 DOMAIN_SET(route); 1288