1 /* $OpenBSD: ospf6d.c,v 1.12 2009/03/28 15:38:58 michele Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> 5 * Copyright (c) 2004, 2007 Esben Norby <norby@openbsd.org> 6 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/types.h> 22 #include <sys/socket.h> 23 #include <sys/queue.h> 24 #include <sys/time.h> 25 #include <sys/stat.h> 26 #include <sys/wait.h> 27 #include <sys/param.h> 28 #include <sys/sysctl.h> 29 30 #include <netinet/in.h> 31 #include <arpa/inet.h> 32 33 #include <event.h> 34 #include <err.h> 35 #include <errno.h> 36 #include <pwd.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <signal.h> 41 #include <unistd.h> 42 43 #include "ospf6d.h" 44 #include "ospf6.h" 45 #include "ospfe.h" 46 #include "control.h" 47 #include "log.h" 48 #include "rde.h" 49 50 void main_sig_handler(int, short, void *); 51 __dead void usage(void); 52 void ospfd_shutdown(void); 53 int check_child(pid_t, const char *); 54 55 void main_dispatch_ospfe(int, short, void *); 56 void main_dispatch_rde(int, short, void *); 57 58 void ospf_redistribute_default(int); 59 60 int ospf_reload(void); 61 int ospf_sendboth(enum imsg_type, void *, u_int16_t); 62 int merge_interfaces(struct area *, struct area *); 63 struct iface *iface_lookup(struct area *, struct iface *); 64 65 int pipe_parent2ospfe[2]; 66 int pipe_parent2rde[2]; 67 int pipe_ospfe2rde[2]; 68 69 struct ospfd_conf *ospfd_conf = NULL; 70 struct imsgbuf *ibuf_ospfe; 71 struct imsgbuf *ibuf_rde; 72 char *conffile; 73 74 pid_t ospfe_pid = 0; 75 pid_t rde_pid = 0; 76 77 /* ARGSUSED */ 78 void 79 main_sig_handler(int sig, short event, void *arg) 80 { 81 /* 82 * signal handler rules don't apply, libevent decouples for us 83 */ 84 85 int die = 0; 86 87 switch (sig) { 88 case SIGTERM: 89 case SIGINT: 90 die = 1; 91 /* FALLTHROUGH */ 92 case SIGCHLD: 93 if (check_child(ospfe_pid, "ospf engine")) { 94 ospfe_pid = 0; 95 die = 1; 96 } 97 if (check_child(rde_pid, "route decision engine")) { 98 rde_pid = 0; 99 die = 1; 100 } 101 if (die) 102 ospfd_shutdown(); 103 break; 104 case SIGHUP: 105 if (ospf_reload() == -1) 106 log_warnx("configuration reload failed"); 107 else 108 log_debug("configuration reloaded"); 109 break; 110 default: 111 fatalx("unexpected signal"); 112 /* NOTREACHED */ 113 } 114 } 115 116 __dead void 117 usage(void) 118 { 119 extern char *__progname; 120 121 fprintf(stderr, "usage: %s [-dnv] [-D macro=value] [-f file]\n", 122 __progname); 123 exit(1); 124 } 125 126 int 127 main(int argc, char *argv[]) 128 { 129 struct event ev_sigint, ev_sigterm, ev_sigchld, ev_sighup; 130 int ch, opts = 0; 131 int debug = 0; 132 int ipforwarding; 133 int mib[4]; 134 size_t len; 135 136 conffile = CONF_FILE; 137 ospfd_process = PROC_MAIN; 138 139 log_init(1); /* log to stderr until daemonized */ 140 141 while ((ch = getopt(argc, argv, "cdD:f:nv")) != -1) { 142 switch (ch) { 143 case 'c': 144 opts |= OSPFD_OPT_FORCE_DEMOTE; 145 break; 146 case 'd': 147 debug = 1; 148 break; 149 case 'D': 150 if (cmdline_symset(optarg) < 0) 151 log_warnx("could not parse macro definition %s", 152 optarg); 153 break; 154 case 'f': 155 conffile = optarg; 156 break; 157 case 'n': 158 opts |= OSPFD_OPT_NOACTION; 159 break; 160 case 'v': 161 if (opts & OSPFD_OPT_VERBOSE) 162 opts |= OSPFD_OPT_VERBOSE2; 163 opts |= OSPFD_OPT_VERBOSE; 164 break; 165 166 default: 167 usage(); 168 /* NOTREACHED */ 169 } 170 } 171 172 argc -= optind; 173 argv += optind; 174 if (argc > 0) 175 usage(); 176 177 mib[0] = CTL_NET; 178 mib[1] = PF_INET6; 179 mib[2] = IPPROTO_IPV6; 180 mib[3] = IPCTL_FORWARDING; 181 len = sizeof(ipforwarding); 182 if (sysctl(mib, 4, &ipforwarding, &len, NULL, 0) == -1) 183 err(1, "sysctl"); 184 185 if (ipforwarding != 1) { 186 log_warnx("WARNING: IPv6 forwarding NOT enabled, " 187 "running as stub router"); 188 opts |= OSPFD_OPT_STUB_ROUTER; 189 } 190 191 /* prepare and fetch interfaces early */ 192 if_init(); 193 194 /* parse config file */ 195 if ((ospfd_conf = parse_config(conffile, opts)) == NULL ) 196 exit(1); 197 198 if (ospfd_conf->opts & OSPFD_OPT_NOACTION) { 199 if (ospfd_conf->opts & OSPFD_OPT_VERBOSE) 200 print_config(ospfd_conf); 201 else 202 fprintf(stderr, "configuration OK\n"); 203 exit(0); 204 } 205 206 /* check for root privileges */ 207 if (geteuid()) 208 errx(1, "need root privileges"); 209 210 /* check for ospfd user */ 211 if (getpwnam(OSPF6D_USER) == NULL) 212 errx(1, "unknown user %s", OSPF6D_USER); 213 214 log_init(debug); 215 216 if (!debug) 217 daemon(1, 0); 218 219 log_info("startup"); 220 221 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, 222 pipe_parent2ospfe) == -1) 223 fatal("socketpair"); 224 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2rde) == -1) 225 fatal("socketpair"); 226 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_ospfe2rde) == -1) 227 fatal("socketpair"); 228 session_socket_blockmode(pipe_parent2ospfe[0], BM_NONBLOCK); 229 session_socket_blockmode(pipe_parent2ospfe[1], BM_NONBLOCK); 230 session_socket_blockmode(pipe_parent2rde[0], BM_NONBLOCK); 231 session_socket_blockmode(pipe_parent2rde[1], BM_NONBLOCK); 232 session_socket_blockmode(pipe_ospfe2rde[0], BM_NONBLOCK); 233 session_socket_blockmode(pipe_ospfe2rde[1], BM_NONBLOCK); 234 235 /* start children */ 236 rde_pid = rde(ospfd_conf, pipe_parent2rde, pipe_ospfe2rde, 237 pipe_parent2ospfe); 238 ospfe_pid = ospfe(ospfd_conf, pipe_parent2ospfe, pipe_ospfe2rde, 239 pipe_parent2rde); 240 241 /* show who we are */ 242 setproctitle("parent"); 243 244 event_init(); 245 246 /* setup signal handler */ 247 signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL); 248 signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL); 249 signal_set(&ev_sigchld, SIGCHLD, main_sig_handler, NULL); 250 signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL); 251 signal_add(&ev_sigint, NULL); 252 signal_add(&ev_sigterm, NULL); 253 signal_add(&ev_sigchld, NULL); 254 signal_add(&ev_sighup, NULL); 255 signal(SIGPIPE, SIG_IGN); 256 257 /* setup pipes to children */ 258 close(pipe_parent2ospfe[1]); 259 close(pipe_parent2rde[1]); 260 close(pipe_ospfe2rde[0]); 261 close(pipe_ospfe2rde[1]); 262 263 if ((ibuf_ospfe = malloc(sizeof(struct imsgbuf))) == NULL || 264 (ibuf_rde = malloc(sizeof(struct imsgbuf))) == NULL) 265 fatal(NULL); 266 imsg_init(ibuf_ospfe, pipe_parent2ospfe[0], main_dispatch_ospfe); 267 imsg_init(ibuf_rde, pipe_parent2rde[0], main_dispatch_rde); 268 269 /* setup event handler */ 270 ibuf_ospfe->events = EV_READ; 271 event_set(&ibuf_ospfe->ev, ibuf_ospfe->fd, ibuf_ospfe->events, 272 ibuf_ospfe->handler, ibuf_ospfe); 273 event_add(&ibuf_ospfe->ev, NULL); 274 275 ibuf_rde->events = EV_READ; 276 event_set(&ibuf_rde->ev, ibuf_rde->fd, ibuf_rde->events, 277 ibuf_rde->handler, ibuf_rde); 278 event_add(&ibuf_rde->ev, NULL); 279 280 if (kr_init(!(ospfd_conf->flags & OSPFD_FLAG_NO_FIB_UPDATE)) == -1) 281 fatalx("kr_init failed"); 282 283 /* redistribute default */ 284 ospf_redistribute_default(IMSG_NETWORK_ADD); 285 286 event_dispatch(); 287 288 ospfd_shutdown(); 289 /* NOTREACHED */ 290 return (0); 291 } 292 293 void 294 ospfd_shutdown(void) 295 { 296 pid_t pid; 297 298 if (ospfe_pid) 299 kill(ospfe_pid, SIGTERM); 300 301 if (rde_pid) 302 kill(rde_pid, SIGTERM); 303 304 control_cleanup(); 305 kr_shutdown(); 306 carp_demote_shutdown(); 307 308 do { 309 if ((pid = wait(NULL)) == -1 && 310 errno != EINTR && errno != ECHILD) 311 fatal("wait"); 312 } while (pid != -1 || (pid == -1 && errno == EINTR)); 313 314 msgbuf_clear(&ibuf_ospfe->w); 315 free(ibuf_ospfe); 316 msgbuf_clear(&ibuf_rde->w); 317 free(ibuf_rde); 318 free(ospfd_conf); 319 320 log_info("terminating"); 321 exit(0); 322 } 323 324 int 325 check_child(pid_t pid, const char *pname) 326 { 327 int status; 328 329 if (waitpid(pid, &status, WNOHANG) > 0) { 330 if (WIFEXITED(status)) { 331 log_warnx("lost child: %s exited", pname); 332 return (1); 333 } 334 if (WIFSIGNALED(status)) { 335 log_warnx("lost child: %s terminated; signal %d", 336 pname, WTERMSIG(status)); 337 return (1); 338 } 339 } 340 341 return (0); 342 } 343 344 /* imsg handling */ 345 /* ARGSUSED */ 346 void 347 main_dispatch_ospfe(int fd, short event, void *bula) 348 { 349 struct imsgbuf *ibuf = bula; 350 struct imsg imsg; 351 struct demote_msg dmsg; 352 ssize_t n; 353 int shut = 0; 354 355 switch (event) { 356 case EV_READ: 357 if ((n = imsg_read(ibuf)) == -1) 358 fatal("imsg_read error"); 359 if (n == 0) /* connection closed */ 360 shut = 1; 361 break; 362 case EV_WRITE: 363 if (msgbuf_write(&ibuf->w) == -1) 364 fatal("msgbuf_write"); 365 imsg_event_add(ibuf); 366 return; 367 default: 368 fatalx("unknown event"); 369 } 370 371 for (;;) { 372 if ((n = imsg_get(ibuf, &imsg)) == -1) 373 fatal("imsg_get"); 374 375 if (n == 0) 376 break; 377 378 switch (imsg.hdr.type) { 379 case IMSG_CTL_RELOAD: 380 if (ospf_reload() == -1) 381 log_warnx("configuration reload failed"); 382 else 383 log_debug("configuration reloaded"); 384 break; 385 case IMSG_CTL_FIB_COUPLE: 386 kr_fib_couple(); 387 break; 388 case IMSG_CTL_FIB_DECOUPLE: 389 kr_fib_decouple(); 390 break; 391 case IMSG_CTL_KROUTE: 392 case IMSG_CTL_KROUTE_ADDR: 393 kr_show_route(&imsg); 394 break; 395 case IMSG_DEMOTE: 396 if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(dmsg)) 397 fatalx("invalid size of OE request"); 398 memcpy(&dmsg, imsg.data, sizeof(dmsg)); 399 carp_demote_set(dmsg.demote_group, dmsg.level); 400 break; 401 default: 402 log_debug("main_dispatch_ospfe: error handling imsg %d", 403 imsg.hdr.type); 404 break; 405 } 406 imsg_free(&imsg); 407 } 408 if (!shut) 409 imsg_event_add(ibuf); 410 else { 411 /* this pipe is dead, so remove the event handler */ 412 event_del(&ibuf->ev); 413 event_loopexit(NULL); 414 } 415 } 416 417 /* ARGSUSED */ 418 void 419 main_dispatch_rde(int fd, short event, void *bula) 420 { 421 struct imsgbuf *ibuf = bula; 422 struct imsg imsg; 423 ssize_t n; 424 int shut = 0; 425 426 switch (event) { 427 case EV_READ: 428 if ((n = imsg_read(ibuf)) == -1) 429 fatal("imsg_read error"); 430 if (n == 0) /* connection closed */ 431 shut = 1; 432 break; 433 case EV_WRITE: 434 if (msgbuf_write(&ibuf->w) == -1) 435 fatal("msgbuf_write"); 436 imsg_event_add(ibuf); 437 return; 438 default: 439 fatalx("unknown event"); 440 } 441 442 for (;;) { 443 if ((n = imsg_get(ibuf, &imsg)) == -1) 444 fatal("imsg_get"); 445 446 if (n == 0) 447 break; 448 449 switch (imsg.hdr.type) { 450 case IMSG_KROUTE_CHANGE: 451 if (kr_change(imsg.data)) 452 log_warn("main_dispatch_rde: error changing " 453 "route"); 454 break; 455 case IMSG_KROUTE_DELETE: 456 if (kr_delete(imsg.data)) 457 log_warn("main_dispatch_rde: error deleting " 458 "route"); 459 break; 460 default: 461 log_debug("main_dispatch_rde: error handling imsg %d", 462 imsg.hdr.type); 463 break; 464 } 465 imsg_free(&imsg); 466 } 467 if (!shut) 468 imsg_event_add(ibuf); 469 else { 470 /* this pipe is dead, so remove the event handler */ 471 event_del(&ibuf->ev); 472 event_loopexit(NULL); 473 } 474 } 475 476 void 477 main_imsg_compose_ospfe(int type, pid_t pid, void *data, u_int16_t datalen) 478 { 479 imsg_compose(ibuf_ospfe, type, 0, pid, data, datalen); 480 } 481 482 void 483 main_imsg_compose_rde(int type, pid_t pid, void *data, u_int16_t datalen) 484 { 485 imsg_compose(ibuf_rde, type, 0, pid, data, datalen); 486 } 487 488 /* this needs to be added here so that ospfctl can be used without libevent */ 489 void 490 imsg_event_add(struct imsgbuf *ibuf) 491 { 492 ibuf->events = EV_READ; 493 if (ibuf->w.queued) 494 ibuf->events |= EV_WRITE; 495 496 event_del(&ibuf->ev); 497 event_set(&ibuf->ev, ibuf->fd, ibuf->events, ibuf->handler, ibuf); 498 event_add(&ibuf->ev, NULL); 499 } 500 501 int 502 ospf_redistribute(struct kroute *kr, u_int32_t *metric) 503 { 504 struct redistribute *r; 505 struct in6_addr ina, inb; 506 507 /* only allow 0.0.0.0/0 via REDISTRIBUTE_DEFAULT */ 508 if (IN6_IS_ADDR_UNSPECIFIED(&kr->prefix) && kr->prefixlen == 0) 509 return (0); 510 511 SIMPLEQ_FOREACH(r, &ospfd_conf->redist_list, entry) { 512 switch (r->type & ~REDIST_NO) { 513 case REDIST_LABEL: 514 if (kr->rtlabel == r->label) { 515 *metric = r->metric; 516 return (r->type & REDIST_NO ? 0 : 1); 517 } 518 break; 519 case REDIST_STATIC: 520 /* 521 * Dynamic routes are not redistributable. Placed here 522 * so that link local addresses can be redistributed 523 * via a rtlabel. 524 */ 525 if (kr->flags & F_DYNAMIC) 526 continue; 527 if (kr->flags & F_STATIC) { 528 *metric = r->metric; 529 return (r->type & REDIST_NO ? 0 : 1); 530 } 531 break; 532 case REDIST_CONNECTED: 533 if (kr->flags & F_DYNAMIC) 534 continue; 535 if (kr->flags & F_CONNECTED) { 536 *metric = r->metric; 537 return (r->type & REDIST_NO ? 0 : 1); 538 } 539 break; 540 case REDIST_ADDR: 541 if (kr->flags & F_DYNAMIC) 542 continue; 543 inet6applymask(&ina, &kr->prefix, kr->prefixlen); 544 inet6applymask(&inb, &r->addr, r->prefixlen); 545 if (IN6_ARE_ADDR_EQUAL(&ina, &inb) && 546 kr->prefixlen >= r->prefixlen) { 547 *metric = r->metric; 548 return (r->type & REDIST_NO ? 0 : 1); 549 } 550 break; 551 } 552 } 553 554 return (0); 555 } 556 557 void 558 ospf_redistribute_default(int type) 559 { 560 struct rroute rr; 561 562 if (!(ospfd_conf->redistribute & REDISTRIBUTE_DEFAULT)) 563 return; 564 565 bzero(&rr, sizeof(rr)); 566 rr.metric = ospfd_conf->defaultmetric; 567 main_imsg_compose_rde(type, 0, &rr, sizeof(struct rroute)); 568 } 569 570 int 571 ospf_reload(void) 572 { 573 struct area *area; 574 struct ospfd_conf *xconf; 575 576 if ((xconf = parse_config(conffile, ospfd_conf->opts)) == NULL) 577 return (-1); 578 579 /* send config to childs */ 580 if (ospf_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1) 581 return (-1); 582 583 /* send areas, interfaces happen out of band */ 584 LIST_FOREACH(area, &xconf->area_list, entry) { 585 if (ospf_sendboth(IMSG_RECONF_AREA, area, sizeof(*area)) == -1) 586 return (-1); 587 } 588 589 if (ospf_sendboth(IMSG_RECONF_END, NULL, 0) == -1) 590 return (-1); 591 592 /* XXX send newly available interfaces to the childs */ 593 594 merge_config(ospfd_conf, xconf); 595 /* update redistribute lists */ 596 kr_reload(); 597 return (0); 598 } 599 600 int 601 ospf_sendboth(enum imsg_type type, void *buf, u_int16_t len) 602 { 603 if (imsg_compose(ibuf_ospfe, type, 0, 0, buf, len) == -1) 604 return (-1); 605 if (imsg_compose(ibuf_rde, type, 0, 0, buf, len) == -1) 606 return (-1); 607 return (0); 608 } 609 610 void 611 merge_config(struct ospfd_conf *conf, struct ospfd_conf *xconf) 612 { 613 struct area *a, *xa, *na; 614 struct iface *iface; 615 struct redistribute *r; 616 617 /* change of rtr_id needs a restart */ 618 conf->flags = xconf->flags; 619 conf->spf_delay = xconf->spf_delay; 620 conf->spf_hold_time = xconf->spf_hold_time; 621 conf->redistribute = xconf->redistribute; 622 623 if (ospfd_process == PROC_MAIN) { 624 /* main process does neither use areas nor interfaces */ 625 while ((r = SIMPLEQ_FIRST(&conf->redist_list)) != NULL) { 626 SIMPLEQ_REMOVE_HEAD(&conf->redist_list, entry); 627 free(r); 628 } 629 while ((r = SIMPLEQ_FIRST(&xconf->redist_list)) != NULL) { 630 SIMPLEQ_REMOVE_HEAD(&xconf->redist_list, entry); 631 SIMPLEQ_INSERT_TAIL(&conf->redist_list, r, entry); 632 } 633 goto done; 634 } 635 636 /* merge areas and interfaces */ 637 for (a = LIST_FIRST(&conf->area_list); a != NULL; a = na) { 638 na = LIST_NEXT(a, entry); 639 /* find deleted areas */ 640 if ((xa = area_find(xconf, a->id)) == NULL) { 641 if (ospfd_process == PROC_OSPF_ENGINE) { 642 LIST_FOREACH(iface, &a->iface_list, entry) 643 if_fsm(iface, IF_EVT_DOWN); 644 } 645 LIST_REMOVE(a, entry); 646 area_del(a); 647 } 648 } 649 650 for (xa = LIST_FIRST(&xconf->area_list); xa != NULL; xa = na) { 651 na = LIST_NEXT(xa, entry); 652 if ((a = area_find(conf, xa->id)) == NULL) { 653 LIST_REMOVE(xa, entry); 654 LIST_INSERT_HEAD(&conf->area_list, xa, entry); 655 if (ospfd_process == PROC_OSPF_ENGINE) { 656 /* start interfaces */ 657 ospfe_demote_area(xa, 0); 658 LIST_FOREACH(iface, &xa->iface_list, entry) 659 if_start(conf, iface); 660 } 661 /* no need to merge interfaces */ 662 continue; 663 } 664 /* 665 * stub is not yet used but switching between stub and normal 666 * will be another painful job. 667 */ 668 a->stub = xa->stub; 669 a->stub_default_cost = xa->stub_default_cost; 670 if (ospfd_process == PROC_RDE_ENGINE) 671 a->dirty = 1; /* force SPF tree recalculation */ 672 673 /* merge interfaces */ 674 if (merge_interfaces(a, xa) && 675 ospfd_process == PROC_OSPF_ENGINE) 676 a->dirty = 1; /* force rtr LSA update */ 677 } 678 679 if (ospfd_process == PROC_OSPF_ENGINE) { 680 LIST_FOREACH(a, &conf->area_list, entry) { 681 LIST_FOREACH(iface, &a->iface_list, entry) { 682 if (iface->state == IF_STA_NEW) { 683 iface->state = IF_STA_DOWN; 684 if_start(conf, iface); 685 } 686 } 687 if (a->dirty) { 688 a->dirty = 0; 689 orig_rtr_lsa(LIST_FIRST(&a->iface_list)); 690 } 691 } 692 } 693 694 done: 695 while ((a = LIST_FIRST(&xconf->area_list)) != NULL) { 696 LIST_REMOVE(a, entry); 697 area_del(a); 698 } 699 free(xconf); 700 } 701 702 int 703 merge_interfaces(struct area *a, struct area *xa) 704 { 705 struct iface *i, *xi, *ni; 706 int dirty = 0; 707 708 /* problems: 709 * - new interfaces (easy) 710 * - deleted interfaces (needs to be done via fsm?) 711 * - changing passive (painful?) 712 */ 713 for (i = LIST_FIRST(&a->iface_list); i != NULL; i = ni) { 714 ni = LIST_NEXT(i, entry); 715 if (iface_lookup(xa, i) == NULL) { 716 log_debug("merge_interfaces: proc %d area %s removing " 717 "interface %s", ospfd_process, inet_ntoa(a->id), 718 i->name); 719 if (ospfd_process == PROC_OSPF_ENGINE) 720 if_fsm(i, IF_EVT_DOWN); 721 LIST_REMOVE(i, entry); 722 if_del(i); 723 } 724 } 725 726 for (xi = LIST_FIRST(&xa->iface_list); xi != NULL; xi = ni) { 727 ni = LIST_NEXT(xi, entry); 728 if ((i = iface_lookup(a, xi)) == NULL) { 729 /* new interface but delay initialisation */ 730 log_debug("merge_interfaces: proc %d area %s adding " 731 "interface %s", ospfd_process, inet_ntoa(a->id), 732 xi->name); 733 LIST_REMOVE(xi, entry); 734 LIST_INSERT_HEAD(&a->iface_list, xi, entry); 735 if (ospfd_process == PROC_OSPF_ENGINE) 736 xi->state = IF_STA_NEW; 737 continue; 738 } 739 log_debug("merge_interfaces: proc %d area %s merging " 740 "interface %s", ospfd_process, inet_ntoa(a->id), i->name); 741 i->addr = xi->addr; 742 i->dst = xi->dst; 743 i->abr_id = xi->abr_id; 744 i->baudrate = xi->baudrate; 745 i->dead_interval = xi->dead_interval; 746 i->mtu = xi->mtu; 747 i->transmit_delay = xi->transmit_delay; 748 i->hello_interval = xi->hello_interval; 749 i->rxmt_interval = xi->rxmt_interval; 750 if (i->metric != xi->metric) 751 dirty = 1; 752 i->metric = xi->metric; 753 i->priority = xi->priority; 754 i->flags = xi->flags; /* needed? */ 755 i->type = xi->type; /* needed? */ 756 i->media_type = xi->media_type; /* needed? */ 757 i->linkstate = xi->linkstate; /* needed? */ 758 759 #if 0 /* XXX needs some kind of love */ 760 if (i->passive != xi->passive) { 761 /* need to restart interface to cope with this change */ 762 if (ospfd_process == PROC_OSPF_ENGINE) 763 if_fsm(i, IF_EVT_DOWN); 764 i->passive = xi->passive; 765 if (ospfd_process == PROC_OSPF_ENGINE) 766 if_fsm(i, IF_EVT_UP); 767 } 768 #endif 769 } 770 return (dirty); 771 } 772 773 struct iface * 774 iface_lookup(struct area *area, struct iface *iface) 775 { 776 struct iface *i; 777 778 LIST_FOREACH(i, &area->iface_list, entry) 779 if (i->ifindex == iface->ifindex) 780 return (i); 781 return (NULL); 782 } 783