1 /* $OpenBSD: ldpd.c,v 1.13 2011/08/20 19:02:28 sthen Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> 5 * Copyright (c) 2004, 2008 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 29 #include <netinet/in.h> 30 #include <arpa/inet.h> 31 #include <netmpls/mpls.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 "ldpd.h" 44 #include "ldp.h" 45 #include "ldpe.h" 46 #include "control.h" 47 #include "log.h" 48 #include "lde.h" 49 50 void main_sig_handler(int, short, void *); 51 __dead void usage(void); 52 void ldpd_shutdown(void); 53 int check_child(pid_t, const char *); 54 55 void main_dispatch_ldpe(int, short, void *); 56 void main_dispatch_lde(int, short, void *); 57 58 /*int ldp_reload(void); */ 59 int ldp_sendboth(enum imsg_type, void *, u_int16_t); 60 /*int merge_interfaces(struct lspace *, struct lspace *); */ 61 /*struct iface *iface_lookup(struct lspace *, struct iface *); */ 62 63 int pipe_parent2ldpe[2]; 64 int pipe_parent2lde[2]; 65 int pipe_ldpe2lde[2]; 66 67 struct ldpd_conf *ldpd_conf = NULL; 68 struct imsgev *iev_ldpe; 69 struct imsgev *iev_lde; 70 char *conffile; 71 72 pid_t ldpe_pid = 0; 73 pid_t lde_pid = 0; 74 75 /* ARGSUSED */ 76 void 77 main_sig_handler(int sig, short event, void *arg) 78 { 79 /* 80 * signal handler rules don't apply, libevent decouples for us 81 */ 82 83 int die = 0; 84 85 switch (sig) { 86 case SIGTERM: 87 case SIGINT: 88 die = 1; 89 /* FALLTHROUGH */ 90 case SIGCHLD: 91 if (check_child(ldpe_pid, "ldp engine")) { 92 ldpe_pid = 0; 93 die = 1; 94 } 95 if (check_child(lde_pid, "label decision engine")) { 96 lde_pid = 0; 97 die = 1; 98 } 99 if (die) 100 ldpd_shutdown(); 101 break; 102 case SIGHUP: 103 /* 104 if (ldp_reload() == -1) 105 log_warnx("configuration reload failed"); 106 else 107 log_debug("configuration reloaded"); 108 */ 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; 132 133 conffile = CONF_FILE; 134 ldpd_process = PROC_MAIN; 135 136 log_init(1); /* log to stderr until daemonized */ 137 log_verbose(1); 138 139 while ((ch = getopt(argc, argv, "dD:f:nv")) != -1) { 140 switch (ch) { 141 case 'd': 142 debug = 1; 143 break; 144 case 'D': 145 if (cmdline_symset(optarg) < 0) 146 log_warnx("could not parse macro definition %s", 147 optarg); 148 break; 149 case 'f': 150 conffile = optarg; 151 break; 152 case 'n': 153 opts |= LDPD_OPT_NOACTION; 154 break; 155 case 'v': 156 if (opts & LDPD_OPT_VERBOSE) 157 opts |= LDPD_OPT_VERBOSE2; 158 opts |= LDPD_OPT_VERBOSE; 159 break; 160 default: 161 usage(); 162 /* NOTREACHED */ 163 } 164 } 165 166 /* fetch interfaces early */ 167 kif_init(); 168 169 /* parse config file */ 170 if ((ldpd_conf = parse_config(conffile, opts)) == NULL ) 171 exit(1); 172 173 /* parse config file */ 174 175 if (ldpd_conf->opts & LDPD_OPT_NOACTION) { 176 if (ldpd_conf->opts & LDPD_OPT_VERBOSE) 177 print_config(ldpd_conf); 178 else 179 fprintf(stderr, "configuration OK\n"); 180 exit(0); 181 } 182 183 /* check for root privileges */ 184 if (geteuid()) 185 errx(1, "need root privileges"); 186 187 /* check for ldpd user */ 188 if (getpwnam(LDPD_USER) == NULL) 189 errx(1, "unknown user %s", LDPD_USER); 190 191 log_init(debug); 192 log_verbose(opts & LDPD_OPT_VERBOSE); 193 194 if (!debug) 195 daemon(1, 0); 196 197 log_info("startup"); 198 199 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, 200 pipe_parent2ldpe) == -1) 201 fatal("socketpair"); 202 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2lde) == -1) 203 fatal("socketpair"); 204 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_ldpe2lde) == -1) 205 fatal("socketpair"); 206 session_socket_blockmode(pipe_parent2ldpe[0], BM_NONBLOCK); 207 session_socket_blockmode(pipe_parent2ldpe[1], BM_NONBLOCK); 208 session_socket_blockmode(pipe_parent2lde[0], BM_NONBLOCK); 209 session_socket_blockmode(pipe_parent2lde[1], BM_NONBLOCK); 210 session_socket_blockmode(pipe_ldpe2lde[0], BM_NONBLOCK); 211 session_socket_blockmode(pipe_ldpe2lde[1], BM_NONBLOCK); 212 213 /* start children */ 214 lde_pid = lde(ldpd_conf, pipe_parent2lde, pipe_ldpe2lde, 215 pipe_parent2ldpe); 216 ldpe_pid = ldpe(ldpd_conf, pipe_parent2ldpe, pipe_ldpe2lde, 217 pipe_parent2lde); 218 219 /* show who we are */ 220 setproctitle("parent"); 221 222 event_init(); 223 224 /* setup signal handler */ 225 signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL); 226 signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL); 227 signal_set(&ev_sigchld, SIGCHLD, main_sig_handler, NULL); 228 signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL); 229 signal_add(&ev_sigint, NULL); 230 signal_add(&ev_sigterm, NULL); 231 signal_add(&ev_sigchld, NULL); 232 signal_add(&ev_sighup, NULL); 233 signal(SIGPIPE, SIG_IGN); 234 235 /* setup pipes to children */ 236 close(pipe_parent2ldpe[1]); 237 close(pipe_parent2lde[1]); 238 close(pipe_ldpe2lde[0]); 239 close(pipe_ldpe2lde[1]); 240 241 if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL || 242 (iev_lde = malloc(sizeof(struct imsgev))) == NULL) 243 fatal(NULL); 244 imsg_init(&iev_ldpe->ibuf, pipe_parent2ldpe[0]); 245 iev_ldpe->handler = main_dispatch_ldpe; 246 imsg_init(&iev_lde->ibuf, pipe_parent2lde[0]); 247 iev_lde->handler = main_dispatch_lde; 248 249 /* setup event handler */ 250 iev_ldpe->events = EV_READ; 251 event_set(&iev_ldpe->ev, iev_ldpe->ibuf.fd, iev_ldpe->events, 252 iev_ldpe->handler, iev_ldpe); 253 event_add(&iev_ldpe->ev, NULL); 254 255 iev_lde->events = EV_READ; 256 event_set(&iev_lde->ev, iev_lde->ibuf.fd, iev_lde->events, 257 iev_lde->handler, iev_lde); 258 event_add(&iev_lde->ev, NULL); 259 260 if (kr_init(!(ldpd_conf->flags & LDPD_FLAG_NO_FIB_UPDATE)) == -1) 261 fatalx("kr_init failed"); 262 263 /* remove unneded stuff from config */ 264 /* ... */ 265 266 267 event_dispatch(); 268 269 ldpd_shutdown(); 270 /* NOTREACHED */ 271 return (0); 272 } 273 274 void 275 ldpd_shutdown(void) 276 { 277 pid_t pid; 278 279 if (ldpe_pid) 280 kill(ldpe_pid, SIGTERM); 281 282 if (lde_pid) 283 kill(lde_pid, SIGTERM); 284 285 control_cleanup(); 286 kr_shutdown(); 287 288 do { 289 if ((pid = wait(NULL)) == -1 && 290 errno != EINTR && errno != ECHILD) 291 fatal("wait"); 292 } while (pid != -1 || (pid == -1 && errno == EINTR)); 293 294 msgbuf_clear(&iev_ldpe->ibuf.w); 295 free(iev_ldpe); 296 msgbuf_clear(&iev_lde->ibuf.w); 297 free(iev_lde); 298 free(ldpd_conf); 299 300 close(ldpd_conf->ldp_session_socket); 301 302 log_info("terminating"); 303 exit(0); 304 } 305 306 int 307 check_child(pid_t pid, const char *pname) 308 { 309 int status; 310 311 if (waitpid(pid, &status, WNOHANG) > 0) { 312 if (WIFEXITED(status)) { 313 log_warnx("lost child: %s exited", pname); 314 return (1); 315 } 316 if (WIFSIGNALED(status)) { 317 log_warnx("lost child: %s terminated; signal %d", 318 pname, WTERMSIG(status)); 319 return (1); 320 } 321 } 322 323 return (0); 324 } 325 326 /* imsg handling */ 327 /* ARGSUSED */ 328 void 329 main_dispatch_ldpe(int fd, short event, void *bula) 330 { 331 struct imsgev *iev = bula; 332 struct imsgbuf *ibuf = &iev->ibuf; 333 struct imsg imsg; 334 ssize_t n; 335 int shut = 0, verbose; 336 337 if (event & EV_READ) { 338 if ((n = imsg_read(ibuf)) == -1) 339 fatal("imsg_read error"); 340 if (n == 0) /* connection closed */ 341 shut = 1; 342 } 343 if (event & EV_WRITE) { 344 if (msgbuf_write(&ibuf->w) == -1) 345 fatal("msgbuf_write"); 346 } 347 348 for (;;) { 349 if ((n = imsg_get(ibuf, &imsg)) == -1) 350 fatal("imsg_get"); 351 352 if (n == 0) 353 break; 354 355 switch (imsg.hdr.type) { 356 case IMSG_CTL_RELOAD: 357 /* 358 if (ldp_reload() == -1) 359 log_warnx("configuration reload failed"); 360 else 361 log_debug("configuration reloaded"); 362 break; 363 */ 364 case IMSG_CTL_FIB_COUPLE: 365 kr_fib_couple(); 366 break; 367 case IMSG_CTL_FIB_DECOUPLE: 368 kr_fib_decouple(); 369 break; 370 case IMSG_CTL_KROUTE: 371 case IMSG_CTL_KROUTE_ADDR: 372 kr_show_route(&imsg); 373 break; 374 case IMSG_CTL_IFINFO: 375 if (imsg.hdr.len == IMSG_HEADER_SIZE) 376 kr_ifinfo(NULL, imsg.hdr.pid); 377 else if (imsg.hdr.len == IMSG_HEADER_SIZE + IFNAMSIZ) 378 kr_ifinfo(imsg.data, imsg.hdr.pid); 379 else 380 log_warnx("IFINFO request with wrong len"); 381 break; 382 case IMSG_CTL_LOG_VERBOSE: 383 /* already checked by ldpe */ 384 memcpy(&verbose, imsg.data, sizeof(verbose)); 385 log_verbose(verbose); 386 break; 387 default: 388 log_debug("main_dispatch_ldpe: error handling imsg %d", 389 imsg.hdr.type); 390 break; 391 } 392 imsg_free(&imsg); 393 } 394 if (!shut) 395 imsg_event_add(iev); 396 else { 397 /* this pipe is dead, so remove the event handler */ 398 event_del(&iev->ev); 399 event_loopexit(NULL); 400 } 401 } 402 403 /* ARGSUSED */ 404 void 405 main_dispatch_lde(int fd, short event, void *bula) 406 { 407 struct imsgev *iev = bula; 408 struct imsgbuf *ibuf = &iev->ibuf; 409 struct imsg imsg; 410 ssize_t n; 411 int shut = 0; 412 413 if (event & EV_READ) { 414 if ((n = imsg_read(ibuf)) == -1) 415 fatal("imsg_read error"); 416 if (n == 0) /* connection closed */ 417 shut = 1; 418 } 419 if (event & EV_WRITE) { 420 if (msgbuf_write(&ibuf->w) == -1) 421 fatal("msgbuf_write"); 422 } 423 424 for (;;) { 425 if ((n = imsg_get(ibuf, &imsg)) == -1) 426 fatal("imsg_get"); 427 428 if (n == 0) 429 break; 430 431 switch (imsg.hdr.type) { 432 case IMSG_KLABEL_CHANGE: 433 if (imsg.hdr.len - IMSG_HEADER_SIZE != 434 sizeof(struct kroute)) 435 fatalx("invalid size of IMSG_KLABEL_CHANGE"); 436 if (kr_change(imsg.data)) 437 log_warn("main_dispatch_lde: error changing " 438 "route"); 439 break; 440 case IMSG_KLABEL_DELETE: 441 if (imsg.hdr.len - IMSG_HEADER_SIZE != 442 sizeof(struct kroute)) 443 fatalx("invalid size of IMSG_KLABEL_DELETE"); 444 if (kr_delete(imsg.data)) 445 log_warn("main_dispatch_lde: error deleting " 446 "route"); 447 break; 448 default: 449 log_debug("main_dispatch_lde: error handling imsg %d", 450 imsg.hdr.type); 451 break; 452 } 453 imsg_free(&imsg); 454 } 455 if (!shut) 456 imsg_event_add(iev); 457 else { 458 /* this pipe is dead, so remove the event handler */ 459 event_del(&iev->ev); 460 event_loopexit(NULL); 461 } 462 } 463 464 void 465 main_imsg_compose_ldpe(int type, pid_t pid, void *data, u_int16_t datalen) 466 { 467 if (iev_ldpe == NULL) 468 return; 469 imsg_compose_event(iev_ldpe, type, 0, pid, -1, data, datalen); 470 } 471 472 void 473 main_imsg_compose_lde(int type, pid_t pid, void *data, u_int16_t datalen) 474 { 475 imsg_compose_event(iev_lde, type, 0, pid, -1, data, datalen); 476 } 477 478 void 479 imsg_event_add(struct imsgev *iev) 480 { 481 iev->events = EV_READ; 482 if (iev->ibuf.w.queued) 483 iev->events |= EV_WRITE; 484 485 event_del(&iev->ev); 486 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev); 487 event_add(&iev->ev, NULL); 488 } 489 490 int 491 imsg_compose_event(struct imsgev *iev, u_int16_t type, 492 u_int32_t peerid, pid_t pid, int fd, void *data, u_int16_t datalen) 493 { 494 int ret; 495 496 if ((ret = imsg_compose(&iev->ibuf, type, peerid, 497 pid, fd, data, datalen)) != -1) 498 imsg_event_add(iev); 499 return (ret); 500 } 501 502 void 503 evbuf_enqueue(struct evbuf *eb, struct ibuf *buf) 504 { 505 ibuf_close(&eb->wbuf, buf); 506 evbuf_event_add(eb); 507 } 508 509 void 510 evbuf_event_add(struct evbuf *eb) 511 { 512 if (eb->wbuf.queued) 513 event_add(&eb->ev, NULL); 514 } 515 516 void 517 evbuf_init(struct evbuf *eb, int fd, void (*handler)(int, short, void *), 518 void *arg) 519 { 520 msgbuf_init(&eb->wbuf); 521 eb->wbuf.fd = fd; 522 event_set(&eb->ev, eb->wbuf.fd, EV_WRITE, handler, arg); 523 } 524 525 void 526 evbuf_clear(struct evbuf *eb) 527 { 528 event_del(&eb->ev); 529 msgbuf_clear(&eb->wbuf); 530 eb->wbuf.fd = -1; 531 } 532 533 /* 534 int 535 ldp_reload(void) 536 { 537 struct lspace *lspace; 538 struct iface *iface; 539 struct ldpd_conf *xconf; 540 541 if ((xconf = parse_config(conffile, ldpd_conf->opts)) == NULL) 542 return (-1); 543 544 if (ldp_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1) 545 return (-1); 546 547 LIST_FOREACH(lspace, &xconf->lspace_list, entry) { 548 if (ldp_sendboth(IMSG_RECONF_AREA, lspace, sizeof(*lspace)) == -1) 549 return (-1); 550 551 LIST_FOREACH(iface, &lspace->iface_list, entry) { 552 if (ldp_sendboth(IMSG_RECONF_IFACE, iface, 553 sizeof(*iface)) == -1) 554 return (-1); 555 } 556 } 557 558 if (ldp_sendboth(IMSG_RECONF_END, NULL, 0) == -1) 559 return (-1); 560 561 merge_config(ldpd_conf, xconf); 562 563 kr_reload(); 564 return (0); 565 } 566 567 int 568 ldp_sendboth(enum imsg_type type, void *buf, u_int16_t len) 569 { 570 if (imsg_compose_event(iev_ldpe, type, 0, 0, -1, buf, len) == -1) 571 return (-1); 572 if (imsg_compose_event(iev_lde, type, 0, 0, -1, buf, len) == -1) 573 return (-1); 574 return (0); 575 } 576 577 void 578 merge_config(struct ldpd_conf *conf, struct ldpd_conf *xconf) 579 { 580 struct lspace *a, *xa, *na; 581 struct iface *iface; 582 struct redistribute *r; 583 int rchange = 0; 584 585 conf->flags = xconf->flags; 586 conf->spf_delay = xconf->spf_delay; 587 conf->spf_hold_time = xconf->spf_hold_time; 588 if ((conf->redistribute & REDISTRIBUTE_ON) != 589 (xconf->redistribute & REDISTRIBUTE_ON)) 590 rchange = 1; 591 conf->redistribute = xconf->redistribute; 592 conf->rfc1583compat = xconf->rfc1583compat; 593 594 if (ldpd_process == PROC_MAIN) { 595 while ((r = SIMPLEQ_FIRST(&conf->redist_list)) != NULL) { 596 SIMPLEQ_REMOVE_HEAD(&conf->redist_list, entry); 597 free(r); 598 } 599 while ((r = SIMPLEQ_FIRST(&xconf->redist_list)) != NULL) { 600 SIMPLEQ_REMOVE_HEAD(&xconf->redist_list, entry); 601 SIMPLEQ_INSERT_TAIL(&conf->redist_list, r, entry); 602 } 603 goto done; 604 } 605 606 for (a = LIST_FIRST(&conf->lspace_list); a != NULL; a = na) { 607 na = LIST_NEXT(a, entry); 608 if ((xa = lspace_find(xconf, a->id)) == NULL) { 609 if (ldpd_process == PROC_LDP_ENGINE) { 610 LIST_FOREACH(iface, &a->iface_list, entry) 611 if_fsm(iface, IF_EVT_DOWN); 612 } 613 LIST_REMOVE(a, entry); 614 lspace_del(a); 615 } 616 } 617 618 for (xa = LIST_FIRST(&xconf->lspace_list); xa != NULL; xa = na) { 619 na = LIST_NEXT(xa, entry); 620 if ((a = lspace_find(conf, xa->id)) == NULL) { 621 LIST_REMOVE(xa, entry); 622 LIST_INSERT_HEAD(&conf->lspace_list, xa, entry); 623 if (ldpd_process == PROC_LDP_ENGINE) { 624 LIST_FOREACH(iface, &xa->iface_list, entry) { 625 if_init(conf, iface); 626 if (if_fsm(iface, IF_EVT_UP)) { 627 log_debug("error starting " 628 "interface %s", 629 iface->name); 630 } 631 } 632 } 633 continue; 634 } 635 a->stub = xa->stub; 636 a->stub_default_cost = xa->stub_default_cost; 637 if (ldpd_process == PROC_LDE_ENGINE) 638 a->dirty = 1; 639 640 if (merge_interfaces(a, xa) && 641 ldpd_process == PROC_LDP_ENGINE) 642 a->dirty = 1; 643 } 644 645 if (ldpd_process == PROC_LDP_ENGINE) { 646 LIST_FOREACH(a, &conf->lspace_list, entry) { 647 LIST_FOREACH(iface, &a->iface_list, entry) { 648 if (iface->state == IF_STA_NEW) { 649 iface->state = IF_STA_DOWN; 650 if_init(conf, iface); 651 if (if_fsm(iface, IF_EVT_UP)) { 652 log_debug("error starting " 653 "interface %s", 654 iface->name); 655 } 656 } 657 } 658 } 659 } 660 661 done: 662 while ((a = LIST_FIRST(&xconf->lspace_list)) != NULL) { 663 LIST_REMOVE(a, entry); 664 lspace_del(a); 665 } 666 free(xconf); 667 } 668 669 int 670 merge_interfaces(struct lspace *a, struct lspace *xa) 671 { 672 struct iface *i, *xi, *ni; 673 int dirty = 0; 674 675 for (i = LIST_FIRST(&a->iface_list); i != NULL; i = ni) { 676 ni = LIST_NEXT(i, entry); 677 if (iface_lookup(xa, i) == NULL) { 678 log_debug("merge_config: proc %d label space %s removing " 679 "interface %s", ldpd_process, inet_ntoa(a->id), 680 i->name); 681 if (ldpd_process == PROC_LDP_ENGINE) 682 if_fsm(i, IF_EVT_DOWN); 683 LIST_REMOVE(i, entry); 684 if_del(i); 685 } 686 } 687 688 for (xi = LIST_FIRST(&xa->iface_list); xi != NULL; xi = ni) { 689 ni = LIST_NEXT(xi, entry); 690 if ((i = iface_lookup(a, xi)) == NULL) { 691 log_debug("merge_config: proc %d label space %s adding " 692 "interface %s", ldpd_process, inet_ntoa(a->id), 693 xi->name); 694 LIST_REMOVE(xi, entry); 695 LIST_INSERT_HEAD(&a->iface_list, xi, entry); 696 xi->lspace = a; 697 if (ldpd_process == PROC_LDP_ENGINE) 698 xi->state = IF_STA_NEW; 699 continue; 700 } 701 log_debug("merge_config: proc %d label space %s merging interface %s", 702 ldpd_process, inet_ntoa(a->id), i->name); 703 i->addr = xi->addr; 704 i->dst = xi->dst; 705 i->mask = xi->mask; 706 i->abr_id = xi->abr_id; 707 i->baudrate = xi->baudrate; 708 i->dead_interval = xi->dead_interval; 709 i->mtu = xi->mtu; 710 i->transmit_delay = xi->transmit_delay; 711 i->hello_interval = xi->hello_interval; 712 i->rxmt_interval = xi->rxmt_interval; 713 if (i->metric != xi->metric) 714 dirty = 1; 715 i->metric = xi->metric; 716 i->priority = xi->priority; 717 i->flags = xi->flags; 718 i->type = xi->type; 719 i->media_type = xi->media_type; 720 i->linkstate = xi->linkstate; 721 722 if (i->passive != xi->passive) { 723 if (ldpd_process == PROC_LDP_ENGINE) 724 if_fsm(i, IF_EVT_DOWN); 725 i->passive = xi->passive; 726 if (ldpd_process == PROC_LDP_ENGINE) 727 if_fsm(i, IF_EVT_UP); 728 } 729 } 730 return (dirty); 731 } 732 733 struct iface * 734 iface_lookup(struct lspace *lspace, struct iface *iface) 735 { 736 struct iface *i; 737 738 LIST_FOREACH(i, &lspace->iface_list, entry) 739 if (i->ifindex == iface->ifindex) 740 return (i); 741 return (NULL); 742 } 743 */ 744