bgpd.c revision 1.132
1/* $OpenBSD: bgpd.c,v 1.132 2006/01/24 14:26:52 claudio Exp $ */ 2 3/* 4 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/types.h> 20#include <sys/socket.h> 21#include <sys/wait.h> 22#include <netinet/in.h> 23#include <arpa/inet.h> 24#include <err.h> 25#include <errno.h> 26#include <fcntl.h> 27#include <poll.h> 28#include <pwd.h> 29#include <signal.h> 30#include <stdio.h> 31#include <stdlib.h> 32#include <string.h> 33#include <unistd.h> 34 35#include "mrt.h" 36#include "bgpd.h" 37#include "session.h" 38 39void sighdlr(int); 40__dead void usage(void); 41int main(int, char *[]); 42int check_child(pid_t, const char *); 43int send_filterset(struct imsgbuf *, struct filter_set_head *, 44 int); 45int reconfigure(char *, struct bgpd_config *, struct mrt_head *, 46 struct peer **, struct filter_head *); 47int dispatch_imsg(struct imsgbuf *, int); 48 49int rfd = -1; 50int cflags = 0; 51struct filter_set_head *connectset; 52struct filter_set_head *connectset6; 53struct filter_set_head *staticset; 54struct filter_set_head *staticset6; 55volatile sig_atomic_t mrtdump = 0; 56volatile sig_atomic_t quit = 0; 57volatile sig_atomic_t reconfig = 0; 58volatile sig_atomic_t sigchld = 0; 59struct imsgbuf *ibuf_se; 60struct imsgbuf *ibuf_rde; 61 62void 63sighdlr(int sig) 64{ 65 switch (sig) { 66 case SIGTERM: 67 case SIGINT: 68 quit = 1; 69 break; 70 case SIGCHLD: 71 sigchld = 1; 72 break; 73 case SIGHUP: 74 reconfig = 1; 75 break; 76 case SIGALRM: 77 case SIGUSR1: 78 mrtdump = 1; 79 break; 80 } 81} 82 83__dead void 84usage(void) 85{ 86 extern char *__progname; 87 88 fprintf(stderr, "usage: %s [-dnv] ", __progname); 89 fprintf(stderr, "[-D macro=value] [-f file] [-r path]\n"); 90 exit(1); 91} 92 93#define PFD_PIPE_SESSION 0 94#define PFD_PIPE_ROUTE 1 95#define PFD_SOCK_ROUTE 2 96#define POLL_MAX 3 97#define MAX_TIMEOUT 3600 98 99int 100main(int argc, char *argv[]) 101{ 102 struct bgpd_config conf; 103 struct peer *peer_l, *p; 104 struct mrt_head mrt_l; 105 struct network_head net_l; 106 struct filter_head *rules_l; 107 struct network *net; 108 struct filter_rule *r; 109 struct mrt *m; 110 struct listen_addr *la; 111 struct pollfd pfd[POLL_MAX]; 112 pid_t io_pid = 0, rde_pid = 0, pid; 113 char *conffile; 114 int debug = 0; 115 int ch, timeout, nfds; 116 int pipe_m2s[2]; 117 int pipe_m2r[2]; 118 int pipe_s2r[2]; 119 120 conffile = CONFFILE; 121 bgpd_process = PROC_MAIN; 122 123 log_init(1); /* log to stderr until daemonized */ 124 125 if ((rules_l = calloc(1, sizeof(struct filter_head))) == NULL) 126 err(1, NULL); 127 128 bzero(&conf, sizeof(conf)); 129 LIST_INIT(&mrt_l); 130 TAILQ_INIT(&net_l); 131 TAILQ_INIT(rules_l); 132 peer_l = NULL; 133 134 while ((ch = getopt(argc, argv, "dD:f:nr:v")) != -1) { 135 switch (ch) { 136 case 'd': 137 debug = 1; 138 break; 139 case 'D': 140 if (cmdline_symset(optarg) < 0) 141 log_warnx("could not parse macro definition %s", 142 optarg); 143 break; 144 case 'f': 145 conffile = optarg; 146 break; 147 case 'n': 148 conf.opts |= BGPD_OPT_NOACTION; 149 break; 150 case 'v': 151 if (conf.opts & BGPD_OPT_VERBOSE) 152 conf.opts |= BGPD_OPT_VERBOSE2; 153 conf.opts |= BGPD_OPT_VERBOSE; 154 break; 155 case 'r': 156 conf.rcsock = optarg; 157 break; 158 default: 159 usage(); 160 /* NOTREACHED */ 161 } 162 } 163 164 if (parse_config(conffile, &conf, &mrt_l, &peer_l, &net_l, rules_l)) { 165 free(rules_l); 166 exit(1); 167 } 168 169 if (conf.opts & BGPD_OPT_NOACTION) { 170 if (conf.opts & BGPD_OPT_VERBOSE) 171 print_config(&conf, &net_l, peer_l, rules_l, &mrt_l); 172 else 173 fprintf(stderr, "configuration OK\n"); 174 exit(0); 175 } 176 cflags = conf.flags; 177 connectset = &conf.connectset; 178 staticset = &conf.staticset; 179 connectset6 = &conf.connectset6; 180 staticset6 = &conf.staticset6; 181 182 if (geteuid()) 183 errx(1, "need root privileges"); 184 185 if (getpwnam(BGPD_USER) == NULL) 186 errx(1, "unknown user %s", BGPD_USER); 187 188 log_init(debug); 189 190 if (!debug) 191 daemon(1, 0); 192 193 log_info("startup"); 194 195 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_m2s) == -1) 196 fatal("socketpair"); 197 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_m2r) == -1) 198 fatal("socketpair"); 199 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_s2r) == -1) 200 fatal("socketpair"); 201 session_socket_blockmode(pipe_m2s[0], BM_NONBLOCK); 202 session_socket_blockmode(pipe_m2s[1], BM_NONBLOCK); 203 session_socket_blockmode(pipe_m2r[0], BM_NONBLOCK); 204 session_socket_blockmode(pipe_m2r[1], BM_NONBLOCK); 205 session_socket_blockmode(pipe_s2r[0], BM_NONBLOCK); 206 session_socket_blockmode(pipe_s2r[1], BM_NONBLOCK); 207 208 prepare_listeners(&conf); 209 210 /* fork children */ 211 rde_pid = rde_main(&conf, peer_l, &net_l, rules_l, &mrt_l, 212 pipe_m2r, pipe_s2r, pipe_m2s); 213 io_pid = session_main(&conf, peer_l, &net_l, rules_l, &mrt_l, 214 pipe_m2s, pipe_s2r, pipe_m2r); 215 216 setproctitle("parent"); 217 218 signal(SIGTERM, sighdlr); 219 signal(SIGINT, sighdlr); 220 signal(SIGCHLD, sighdlr); 221 signal(SIGHUP, sighdlr); 222 signal(SIGALRM, sighdlr); 223 signal(SIGUSR1, sighdlr); 224 225 close(pipe_m2s[1]); 226 close(pipe_m2r[1]); 227 close(pipe_s2r[0]); 228 close(pipe_s2r[1]); 229 230 if ((ibuf_se = malloc(sizeof(struct imsgbuf))) == NULL || 231 (ibuf_rde = malloc(sizeof(struct imsgbuf))) == NULL) 232 fatal(NULL); 233 imsg_init(ibuf_se, pipe_m2s[0]); 234 imsg_init(ibuf_rde, pipe_m2r[0]); 235 mrt_init(ibuf_rde, ibuf_se); 236 if ((rfd = kr_init(!(conf.flags & BGPD_FLAG_NO_FIB_UPDATE))) == -1) 237 quit = 1; 238 if (pftable_clear_all() != 0) 239 quit = 1; 240 241 while ((net = TAILQ_FIRST(&net_l)) != NULL) { 242 TAILQ_REMOVE(&net_l, net, entry); 243 filterset_free(&net->net.attrset); 244 free(net); 245 } 246 247 while ((r = TAILQ_FIRST(rules_l)) != NULL) { 248 TAILQ_REMOVE(rules_l, r, entry); 249 free(r); 250 } 251 TAILQ_FOREACH(la, conf.listen_addrs, entry) { 252 close(la->fd); 253 la->fd = -1; 254 } 255 256 mrt_reconfigure(&mrt_l); 257 258 while (quit == 0) { 259 bzero(pfd, sizeof(pfd)); 260 pfd[PFD_PIPE_SESSION].fd = ibuf_se->fd; 261 pfd[PFD_PIPE_SESSION].events = POLLIN; 262 if (ibuf_se->w.queued) 263 pfd[PFD_PIPE_SESSION].events |= POLLOUT; 264 pfd[PFD_PIPE_ROUTE].fd = ibuf_rde->fd; 265 pfd[PFD_PIPE_ROUTE].events = POLLIN; 266 if (ibuf_rde->w.queued) 267 pfd[PFD_PIPE_ROUTE].events |= POLLOUT; 268 pfd[PFD_SOCK_ROUTE].fd = rfd; 269 pfd[PFD_SOCK_ROUTE].events = POLLIN; 270 271 timeout = mrt_timeout(&mrt_l); 272 if (timeout > MAX_TIMEOUT) 273 timeout = MAX_TIMEOUT; 274 275 if ((nfds = poll(pfd, POLL_MAX, timeout * 1000)) == -1) 276 if (errno != EINTR) { 277 log_warn("poll error"); 278 quit = 1; 279 } 280 281 if (nfds > 0 && pfd[PFD_PIPE_SESSION].revents & POLLOUT) 282 if (msgbuf_write(&ibuf_se->w) < 0) { 283 log_warn("pipe write error (to SE)"); 284 quit = 1; 285 } 286 287 if (nfds > 0 && pfd[PFD_PIPE_ROUTE].revents & POLLOUT) 288 if (msgbuf_write(&ibuf_rde->w) < 0) { 289 log_warn("pipe write error (to RDE)"); 290 quit = 1; 291 } 292 293 if (nfds > 0 && pfd[PFD_PIPE_SESSION].revents & POLLIN) { 294 if (dispatch_imsg(ibuf_se, PFD_PIPE_SESSION) == -1) 295 quit = 1; 296 } 297 298 if (nfds > 0 && pfd[PFD_PIPE_ROUTE].revents & POLLIN) { 299 if (dispatch_imsg(ibuf_rde, PFD_PIPE_ROUTE) == -1) 300 quit = 1; 301 } 302 303 if (nfds > 0 && pfd[PFD_SOCK_ROUTE].revents & POLLIN) { 304 if (kr_dispatch_msg() == -1) 305 quit = 1; 306 } 307 308 if (reconfig) { 309 reconfig = 0; 310 log_info("rereading config"); 311 reconfigure(conffile, &conf, &mrt_l, &peer_l, rules_l); 312 } 313 314 if (sigchld) { 315 sigchld = 0; 316 if (check_child(io_pid, "session engine")) { 317 quit = 1; 318 io_pid = 0; 319 } 320 if (check_child(rde_pid, "route decision engine")) { 321 quit = 1; 322 rde_pid = 0; 323 } 324 } 325 326 if (mrtdump) { 327 mrtdump = 0; 328 mrt_handler(&mrt_l); 329 } 330 } 331 332 signal(SIGCHLD, SIG_IGN); 333 334 if (io_pid) 335 kill(io_pid, SIGTERM); 336 337 if (rde_pid) 338 kill(rde_pid, SIGTERM); 339 340 while ((p = peer_l) != NULL) { 341 peer_l = p->next; 342 free(p); 343 } 344 while ((m = LIST_FIRST(&mrt_l)) != NULL) { 345 LIST_REMOVE(m, entry); 346 free(m); 347 } 348 while ((la = TAILQ_FIRST(conf.listen_addrs)) != NULL) { 349 TAILQ_REMOVE(conf.listen_addrs, la, entry); 350 close(la->fd); 351 free(la); 352 } 353 354 free(rules_l); 355 control_cleanup(SOCKET_NAME); 356 control_cleanup(conf.rcsock); 357 kr_shutdown(); 358 pftable_clear_all(); 359 free(conf.listen_addrs); 360 361 do { 362 if ((pid = wait(NULL)) == -1 && 363 errno != EINTR && errno != ECHILD) 364 fatal("wait"); 365 } while (pid != -1 || (pid == -1 && errno == EINTR)); 366 367 msgbuf_clear(&ibuf_se->w); 368 free(ibuf_se); 369 msgbuf_clear(&ibuf_rde->w); 370 free(ibuf_rde); 371 372 log_info("Terminating"); 373 return (0); 374} 375 376int 377check_child(pid_t pid, const char *pname) 378{ 379 int status; 380 381 if (waitpid(pid, &status, WNOHANG) > 0) { 382 if (WIFEXITED(status)) { 383 log_warnx("Lost child: %s exited", pname); 384 return (1); 385 } 386 if (WIFSIGNALED(status)) { 387 log_warnx("Lost child: %s terminated; signal %d", 388 pname, WTERMSIG(status)); 389 return (1); 390 } 391 } 392 393 return (0); 394} 395 396int 397send_filterset(struct imsgbuf *i, struct filter_set_head *set, int id) 398{ 399 struct filter_set *s; 400 401 TAILQ_FOREACH(s, set, entry) 402 if (imsg_compose(i, IMSG_FILTER_SET, id, 0, -1, s, 403 sizeof(struct filter_set)) == -1) 404 return (-1); 405 return (0); 406} 407 408int 409reconfigure(char *conffile, struct bgpd_config *conf, struct mrt_head *mrt_l, 410 struct peer **peer_l, struct filter_head *rules_l) 411{ 412 struct network_head net_l; 413 struct network *n; 414 struct peer *p; 415 struct filter_rule *r; 416 struct listen_addr *la; 417 418 if (parse_config(conffile, conf, mrt_l, peer_l, &net_l, rules_l)) { 419 log_warnx("config file %s has errors, not reloading", 420 conffile); 421 return (-1); 422 } 423 424 cflags = conf->flags; 425 connectset = &conf->connectset; 426 staticset = &conf->staticset; 427 connectset6 = &conf->connectset6; 428 staticset6 = &conf->staticset6; 429 430 prepare_listeners(conf); 431 432 /* start reconfiguration */ 433 if (imsg_compose(ibuf_se, IMSG_RECONF_CONF, 0, 0, -1, 434 conf, sizeof(struct bgpd_config)) == -1) 435 return (-1); 436 if (imsg_compose(ibuf_rde, IMSG_RECONF_CONF, 0, 0, -1, 437 conf, sizeof(struct bgpd_config)) == -1) 438 return (-1); 439 440 /* send peer list and listeners to the SE */ 441 for (p = *peer_l; p != NULL; p = p->next) 442 if (imsg_compose(ibuf_se, IMSG_RECONF_PEER, p->conf.id, 0, -1, 443 &p->conf, sizeof(struct peer_config)) == -1) 444 return (-1); 445 446 TAILQ_FOREACH(la, conf->listen_addrs, entry) { 447 if (imsg_compose(ibuf_se, IMSG_RECONF_LISTENER, 0, 0, la->fd, 448 la, sizeof(struct listen_addr)) == -1) 449 return (-1); 450 la->fd = -1; 451 } 452 453 /* networks for the RDE */ 454 while ((n = TAILQ_FIRST(&net_l)) != NULL) { 455 if (imsg_compose(ibuf_rde, IMSG_NETWORK_ADD, 0, 0, -1, 456 &n->net, sizeof(struct network_config)) == -1) 457 return (-1); 458 if (send_filterset(ibuf_rde, &n->net.attrset, 0) == -1) 459 return (-1); 460 if (imsg_compose(ibuf_rde, IMSG_NETWORK_DONE, 0, 0, -1, 461 NULL, 0) == -1) 462 return (-1); 463 TAILQ_REMOVE(&net_l, n, entry); 464 filterset_free(&n->net.attrset); 465 free(n); 466 } 467 468 /* redistribute list needs to be reloaded too */ 469 if (kr_redist_reload() == -1) 470 return (-1); 471 472 /* filters for the RDE */ 473 while ((r = TAILQ_FIRST(rules_l)) != NULL) { 474 if (imsg_compose(ibuf_rde, IMSG_RECONF_FILTER, 0, 0, -1, 475 r, sizeof(struct filter_rule)) == -1) 476 return (-1); 477 if (send_filterset(ibuf_rde, &r->set, 0) == -1) 478 return (-1); 479 TAILQ_REMOVE(rules_l, r, entry); 480 filterset_free(&r->set); 481 free(r); 482 } 483 484 /* singal both childs to replace their config */ 485 if (imsg_compose(ibuf_se, IMSG_RECONF_DONE, 0, 0, -1, NULL, 0) == -1 || 486 imsg_compose(ibuf_rde, IMSG_RECONF_DONE, 0, 0, -1, NULL, 0) == -1) 487 return (-1); 488 489 /* mrt changes can be sent out of bound */ 490 mrt_reconfigure(mrt_l); 491 return (0); 492} 493 494int 495dispatch_imsg(struct imsgbuf *ibuf, int idx) 496{ 497 struct imsg imsg; 498 int n; 499 int rv; 500 501 if ((n = imsg_read(ibuf)) == -1) 502 return (-1); 503 504 if (n == 0) { /* connection closed */ 505 log_warnx("dispatch_imsg in main: pipe closed"); 506 return (-1); 507 } 508 509 rv = 0; 510 for (;;) { 511 if ((n = imsg_get(ibuf, &imsg)) == -1) 512 return (-1); 513 514 if (n == 0) 515 break; 516 517 switch (imsg.hdr.type) { 518 case IMSG_KROUTE_CHANGE: 519 if (idx != PFD_PIPE_ROUTE) 520 log_warnx("route request not from RDE"); 521 else if (kr_change(imsg.data)) 522 rv = -1; 523 break; 524 case IMSG_KROUTE_DELETE: 525 if (idx != PFD_PIPE_ROUTE) 526 log_warnx("route request not from RDE"); 527 else if (kr_delete(imsg.data)) 528 rv = -1; 529 break; 530 case IMSG_KROUTE6_CHANGE: 531 if (idx != PFD_PIPE_ROUTE) 532 log_warnx("route request not from RDE"); 533 else if (kr6_change(imsg.data)) 534 rv = -1; 535 break; 536 case IMSG_KROUTE6_DELETE: 537 if (idx != PFD_PIPE_ROUTE) 538 log_warnx("route request not from RDE"); 539 else if (kr6_delete(imsg.data)) 540 rv = -1; 541 break; 542 case IMSG_NEXTHOP_ADD: 543 if (idx != PFD_PIPE_ROUTE) 544 log_warnx("nexthop request not from RDE"); 545 else 546 if (imsg.hdr.len != IMSG_HEADER_SIZE + 547 sizeof(struct bgpd_addr)) 548 log_warnx("wrong imsg len"); 549 else if (kr_nexthop_add(imsg.data) == -1) 550 rv = -1; 551 break; 552 case IMSG_NEXTHOP_REMOVE: 553 if (idx != PFD_PIPE_ROUTE) 554 log_warnx("nexthop request not from RDE"); 555 else 556 if (imsg.hdr.len != IMSG_HEADER_SIZE + 557 sizeof(struct bgpd_addr)) 558 log_warnx("wrong imsg len"); 559 else 560 kr_nexthop_delete(imsg.data); 561 break; 562 case IMSG_PFTABLE_ADD: 563 if (idx != PFD_PIPE_ROUTE) 564 log_warnx("pftable request not from RDE"); 565 else 566 if (imsg.hdr.len != IMSG_HEADER_SIZE + 567 sizeof(struct pftable_msg)) 568 log_warnx("wrong imsg len"); 569 else if (pftable_addr_add(imsg.data) != 0) 570 rv = -1; 571 break; 572 case IMSG_PFTABLE_REMOVE: 573 if (idx != PFD_PIPE_ROUTE) 574 log_warnx("pftable request not from RDE"); 575 else 576 if (imsg.hdr.len != IMSG_HEADER_SIZE + 577 sizeof(struct pftable_msg)) 578 log_warnx("wrong imsg len"); 579 else if (pftable_addr_remove(imsg.data) != 0) 580 rv = -1; 581 break; 582 case IMSG_PFTABLE_COMMIT: 583 if (idx != PFD_PIPE_ROUTE) 584 log_warnx("pftable request not from RDE"); 585 else 586 if (imsg.hdr.len != IMSG_HEADER_SIZE) 587 log_warnx("wrong imsg len"); 588 else if (pftable_commit() != 0) 589 rv = -1; 590 break; 591 case IMSG_CTL_RELOAD: 592 if (idx != PFD_PIPE_SESSION) 593 log_warnx("reload request not from SE"); 594 else 595 reconfig = 1; 596 break; 597 case IMSG_CTL_FIB_COUPLE: 598 if (idx != PFD_PIPE_SESSION) 599 log_warnx("couple request not from SE"); 600 else 601 kr_fib_couple(); 602 break; 603 case IMSG_CTL_FIB_DECOUPLE: 604 if (idx != PFD_PIPE_SESSION) 605 log_warnx("decouple request not from SE"); 606 else 607 kr_fib_decouple(); 608 break; 609 case IMSG_CTL_KROUTE: 610 case IMSG_CTL_KROUTE_ADDR: 611 case IMSG_CTL_SHOW_NEXTHOP: 612 case IMSG_CTL_SHOW_INTERFACE: 613 if (idx != PFD_PIPE_SESSION) 614 log_warnx("kroute request not from SE"); 615 else 616 kr_show_route(&imsg); 617 break; 618 case IMSG_IFINFO: 619 if (idx != PFD_PIPE_SESSION) 620 log_warnx("IFINFO request not from SE"); 621 else if (imsg.hdr.len != IMSG_HEADER_SIZE + IFNAMSIZ) 622 log_warnx("IFINFO request with wrong len"); 623 else 624 kr_ifinfo(imsg.data); 625 break; 626 default: 627 break; 628 } 629 imsg_free(&imsg); 630 if (rv != 0) 631 return (rv); 632 } 633 return (0); 634} 635 636void 637send_nexthop_update(struct kroute_nexthop *msg) 638{ 639 char *gw = NULL; 640 641 if (msg->gateway.af) 642 if (asprintf(&gw, ": via %s", 643 log_addr(&msg->gateway)) == -1) { 644 log_warn("send_nexthop_update"); 645 quit = 1; 646 } 647 648 log_info("nexthop %s now %s%s%s", log_addr(&msg->nexthop), 649 msg->valid ? "valid" : "invalid", 650 msg->connected ? ": directly connected" : "", 651 msg->gateway.af ? gw : ""); 652 653 free(gw); 654 655 if (imsg_compose(ibuf_rde, IMSG_NEXTHOP_UPDATE, 0, 0, -1, 656 msg, sizeof(struct kroute_nexthop)) == -1) 657 quit = 1; 658} 659 660void 661send_imsg_session(int type, pid_t pid, void *data, u_int16_t datalen) 662{ 663 imsg_compose(ibuf_se, type, 0, pid, -1, data, datalen); 664} 665 666int 667bgpd_redistribute(int type, struct kroute *kr, struct kroute6 *kr6) 668{ 669 struct network_config net; 670 struct filter_set_head *h; 671 672 if ((cflags & BGPD_FLAG_REDIST_CONNECTED) && kr && 673 (kr->flags & F_CONNECTED)) 674 h = connectset; 675 else if ((cflags & BGPD_FLAG_REDIST_STATIC) && kr && 676 (kr->flags & F_STATIC)) 677 h = staticset; 678 else if ((cflags & BGPD_FLAG_REDIST6_CONNECTED) && kr6 && 679 (kr6->flags & F_CONNECTED)) 680 h = connectset6; 681 else if ((cflags & BGPD_FLAG_REDIST6_STATIC) && kr6 && 682 (kr6->flags & F_STATIC)) 683 h = staticset6; 684 else 685 return (0); 686 687 bzero(&net, sizeof(net)); 688 if (kr && kr6) 689 fatalx("bgpd_redistribute: unable to redistribute v4 and v6" 690 "together"); 691 if (kr != NULL) { 692 net.prefix.af = AF_INET; 693 net.prefix.v4.s_addr = kr->prefix.s_addr; 694 net.prefixlen = kr->prefixlen; 695 } 696 if (kr6 != NULL) { 697 net.prefix.af = AF_INET6; 698 memcpy(&net.prefix.v6, &kr6->prefix, sizeof(struct in6_addr)); 699 net.prefixlen = kr6->prefixlen; 700 } 701 702 703 if (imsg_compose(ibuf_rde, type, 0, 0, -1, &net, 704 sizeof(struct network_config)) == -1) 705 return (-1); 706 707 /* networks that get deleted don't need to send the filter set */ 708 if (type == IMSG_NETWORK_REMOVE) 709 return (1); 710 711 if (send_filterset(ibuf_rde, h, 0) == -1) 712 return (-1); 713 if (imsg_compose(ibuf_rde, IMSG_NETWORK_DONE, 0, 0, -1, NULL, 0) == -1) 714 return (-1); 715 716 return (1); 717} 718 719