]> git.proxmox.com Git - mirror_frr.git/blame - ldpd/ldpd.c
projects / mirror_frr.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge pull request #8242 from opensourcerouting/format-warning-fix
[mirror_frr.git] / ldpd / ldpd.c
CommitLineData
8429abe0
RW		 1/* $OpenBSD$ */
2
3/*
4 * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
5 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
6 * Copyright (c) 2004, 2008 Esben Norby <norby@openbsd.org>
7 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
8 *
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 */
21
eac6e3f0 22#include <zebra.h>
8429abe0 23#include <sys/wait.h>
8429abe0
RW		 24
25#include "ldpd.h"
26#include "ldpe.h"
27#include "lde.h"
28#include "log.h"
eac6e3f0
RW		 29#include "ldp_vty.h"
30#include "ldp_debug.h"
31
32#include <lib/version.h>
33#include <lib/log.h>
34#include "getopt.h"
35#include "vty.h"
36#include "command.h"
37#include "memory.h"
38#include "privs.h"
39#include "sigevent.h"
40#include "zclient.h"
41#include "vrf.h"
45a8eba9 42#include "filter.h"
4af8997d 43#include "qobj.h"
4f04a76b 44#include "libfrr.h"
1e404099 45#include "lib_errors.h"
eac6e3f0
RW		 46
47static void ldpd_shutdown(void);
274f5abf 48static pid_t start_child(enum ldpd_process, char *, int, int);
eac6e3f0
RW		 49static int main_dispatch_ldpe(struct thread *);
50static int main_dispatch_lde(struct thread *);
8429abe0
RW		 51static int main_imsg_send_ipc_sockets(struct imsgbuf *,
52 struct imsgbuf *);
53static void main_imsg_send_net_sockets(int);
54static void main_imsg_send_net_socket(int, enum socket_type);
55static int main_imsg_send_config(struct ldpd_conf *);
56b8a8d2 56static void ldp_config_normalize(struct ldpd_conf *);
e4a82008 57static void ldp_config_reset(struct ldpd_conf *);
56b8a8d2
RW		 58static void ldp_config_reset_main(struct ldpd_conf *);
59static void ldp_config_reset_af(struct ldpd_conf *, int);
1d75a89d 60static void ldp_config_reset_l2vpns(struct ldpd_conf *);
8429abe0
RW		 61static void merge_global(struct ldpd_conf *, struct ldpd_conf *);
62static void merge_af(int, struct ldpd_af_conf *,
63 struct ldpd_af_conf *);
56b8a8d2 64static void merge_ifaces(struct ldpd_conf *, struct ldpd_conf *);
8429abe0 65static void merge_iface_af(struct iface_af *, struct iface_af *);
56b8a8d2
RW		 66static void merge_tnbrs(struct ldpd_conf *, struct ldpd_conf *);
67static void merge_nbrps(struct ldpd_conf *, struct ldpd_conf *);
68static void merge_l2vpns(struct ldpd_conf *, struct ldpd_conf *);
8429abe0 69static void merge_l2vpn(struct ldpd_conf *, struct l2vpn *,
56b8a8d2 70 struct l2vpn *);
8429abe0 71
4af8997d
RW		 72DEFINE_QOBJ_TYPE(iface)
73DEFINE_QOBJ_TYPE(tnbr)
74DEFINE_QOBJ_TYPE(nbr_params)
75DEFINE_QOBJ_TYPE(l2vpn_if)
76DEFINE_QOBJ_TYPE(l2vpn_pw)
77DEFINE_QOBJ_TYPE(l2vpn)
78DEFINE_QOBJ_TYPE(ldpd_conf)
79
8429abe0 80struct ldpd_global global;
274f5abf 81struct ldpd_init init;
56b8a8d2 82struct ldpd_conf *ldpd_conf, *vty_conf;
8429abe0 83
28e8294c
RW		 84static struct imsgev *iev_ldpe, *iev_ldpe_sync;
85static struct imsgev *iev_lde, *iev_lde_sync;
8429abe0
RW		 86static pid_t ldpe_pid;
87static pid_t lde_pid;
88
f9a4d683
KS		 89static struct frr_daemon_info ldpd_di;
90
91DEFINE_HOOK(ldp_register_mib, (struct thread_master * tm), (tm))
92
93static void ldp_load_module(const char *name)
94{
95 const char *dir;
96 dir = ldpd_di.module_path ? ldpd_di.module_path : frr_moduledir;
97 char moderr[256];
98 struct frrmod_runtime *module;
99
100 module = frrmod_load(name, dir, moderr, sizeof(moderr));
101 if (!module) {
102 fprintf(stderr, "%s: failed to load %s", __func__, name);
103 log_warnx("%s: failed to load %s", __func__, name);
104 }
105}
106
107void ldp_agentx_enabled(void)
108{
109 ldp_load_module("snmp");
110 hook_call(ldp_register_mib, master);
111}
112
54ca644b
RK		 113enum ldpd_process ldpd_process;
114
eac6e3f0
RW		 115#define LDP_DEFAULT_CONFIG "ldpd.conf"
116#define LDP_VTY_PORT 2612
117
118/* Master of threads. */
119struct thread_master *master;
120
eac6e3f0
RW		 121/* ldpd privileges */
122static zebra_capabilities_t _caps_p [] =
8429abe0 123{
eac6e3f0
RW		 124 ZCAP_BIND,
125 ZCAP_NET_ADMIN
126};
127
128struct zebra_privs_t ldpd_privs =
129{
b2f36157
DL		 130#if defined(FRR_USER) && defined(FRR_GROUP)
131 .user = FRR_USER,
132 .group = FRR_GROUP,
eac6e3f0
RW		 133#endif
134#if defined(VTY_GROUP)
135 .vty_group = VTY_GROUP,
136#endif
137 .caps_p = _caps_p,
138 .cap_num_p = array_size(_caps_p),
139 .cap_num_i = 0
140};
141
372b8bd3 142/* CTL Socket path */
0d675e49 143char ctl_sock_path[MAXPATHLEN];
372b8bd3 144
eac6e3f0 145/* LDPd options. */
372b8bd3 146#define OPTION_CTLSOCK 1001
2b64873d 147static const struct option longopts[] =
eac6e3f0 148{
372b8bd3 149 { "ctl_socket", required_argument, NULL, OPTION_CTLSOCK},
fea12efb 150 { "instance", required_argument, NULL, 'n'},
eac6e3f0
RW		 151 { 0 }
152};
153
eac6e3f0
RW		 154/* SIGHUP handler. */
155static void
156sighup(void)
157{
158 log_info("SIGHUP received");
dbce3582 159
dbce3582 160 /*
e4a82008
RW		 161 * Do a full configuration reload. In other words, reset vty_conf
162 * and build a new configuartion from scratch.
dbce3582 163 */
e4a82008 164 ldp_config_reset(vty_conf);
1c2facd1 165 vty_read_config(NULL, ldpd_di.config_file, config_default);
e4a82008 166 ldp_config_apply(NULL, vty_conf);
eac6e3f0
RW		 167}
168
169/* SIGINT / SIGTERM handler. */
170static void
171sigint(void)
8429abe0 172{
eac6e3f0
RW		 173 log_info("SIGINT received");
174 ldpd_shutdown();
175}
8429abe0 176
eac6e3f0
RW		 177/* SIGUSR1 handler. */
178static void
179sigusr1(void)
180{
dd8376fe 181 zlog_rotate();
8429abe0
RW		 182}
183
eac6e3f0
RW		 184static struct quagga_signal_t ldp_signals[] =
185{
186 {
187 .signal = SIGHUP,
188 .handler = &sighup,
189 },
190 {
191 .signal = SIGINT,
192 .handler = &sigint,
193 },
194 {
195 .signal = SIGTERM,
196 .handler = &sigint,
197 },
198 {
199 .signal = SIGUSR1,
200 .handler = &sigusr1,
201 }
202};
203
0d8c7a26 204static const struct frr_yang_module_info *const ldpd_yang_modules[] = {
fb7f5aa8 205 &frr_filter_info,
6fd8972a 206 &frr_vrf_info,
8fcdd0d6
RW		 207};
208
4f04a76b
DL		 209FRR_DAEMON_INFO(ldpd, LDP,
210 .vty_port = LDP_VTY_PORT,
211
212 .proghelp = "Implementation of the LDP protocol.",
213
214 .signals = ldp_signals,
215 .n_signals = array_size(ldp_signals),
216
217 .privs = &ldpd_privs,
8fcdd0d6
RW		 218
219 .yang_modules = ldpd_yang_modules,
220 .n_yang_modules = array_size(ldpd_yang_modules),
4f04a76b
DL		 221)
222
9124048d
DS		 223static int ldp_config_fork_apply(struct thread *t)
224{
225 /*
226 * So the frr_config_fork() function schedules
227 * the read of the vty config( if there is a
228 * non-integrated config ) to be after the
229 * end of startup and we are starting the
230 * main process loop. We need to schedule
231 * the application of this if necessary
232 * after the read in of the config.
233 */
234 ldp_config_apply(NULL, vty_conf);
235
236 return 0;
237}
238
8429abe0
RW		 239int
240main(int argc, char *argv[])
241{
8429abe0 242 char *saved_argv0;
eac6e3f0 243 int lflag = 0, eflag = 0;
28e8294c
RW		 244 int pipe_parent2ldpe[2], pipe_parent2ldpe_sync[2];
245 int pipe_parent2lde[2], pipe_parent2lde_sync[2];
372b8bd3 246 char *ctl_sock_name;
9124048d 247 struct thread *thread = NULL;
0d675e49
DS		 248 bool ctl_sock_used = false;
249
250 snprintf(ctl_sock_path, sizeof(ctl_sock_path), LDPD_SOCKET,
251 "", "");
8429abe0 252
8429abe0 253 ldpd_process = PROC_MAIN;
fa68f9da 254 log_procname = log_procnames[ldpd_process];
8429abe0 255
8429abe0
RW		 256 saved_argv0 = argv[0];
257 if (saved_argv0 == NULL)
eac6e3f0 258 saved_argv0 = (char *)"ldpd";
8429abe0 259
4f04a76b 260 frr_preinit(&ldpd_di, argc, argv);
fea12efb 261 frr_opt_add("LEn:", longopts,
262 " --ctl_socket Override ctl socket path\n"
7991dc32 263 " -n, --instance Instance id\n");
4f04a76b 264
eac6e3f0
RW		 265 while (1) {
266 int opt;
267
4f04a76b 268 opt = frr_getopt(argc, argv, NULL);
eac6e3f0
RW		 269
270 if (opt == EOF)
8429abe0 271 break;
eac6e3f0
RW		 272
273 switch (opt) {
274 case 0:
275 break;
372b8bd3 276 case OPTION_CTLSOCK:
0d675e49 277 ctl_sock_used = true;
372b8bd3
RW		 278 ctl_sock_name = strrchr(LDPD_SOCKET, '/');
279 if (ctl_sock_name)
280 /* skip '/' */
281 ctl_sock_name++;
282 else
283 /*
284 * LDPD_SOCKET configured as relative path
285 * during config? Should really never happen for
286 * sensible config
287 */
288 ctl_sock_name = (char *)LDPD_SOCKET;
274f5abf 289 strlcpy(ctl_sock_path, optarg, sizeof(ctl_sock_path));
372b8bd3
RW		 290 strlcat(ctl_sock_path, "/", sizeof(ctl_sock_path));
291 strlcat(ctl_sock_path, ctl_sock_name,
292 sizeof(ctl_sock_path));
293 break;
fea12efb 294 case 'n':
274f5abf
RW		 295 init.instance = atoi(optarg);
296 if (init.instance < 1)
fea12efb 297 exit(0);
298 break;
8429abe0
RW		 299 case 'L':
300 lflag = 1;
301 break;
302 case 'E':
303 eflag = 1;
304 break;
305 default:
4f04a76b 306 frr_help_exit(1);
eac6e3f0 307 break;
8429abe0
RW		 308 }
309 }
310
0d675e49
DS		 311 if (ldpd_di.pathspace && !ctl_sock_used)
312 snprintf(ctl_sock_path, sizeof(ctl_sock_path), LDPD_SOCKET,
313 "/", ldpd_di.pathspace);
314
274f5abf
RW		 315 strlcpy(init.user, ldpd_privs.user, sizeof(init.user));
316 strlcpy(init.group, ldpd_privs.group, sizeof(init.group));
317 strlcpy(init.ctl_sock_path, ctl_sock_path, sizeof(init.ctl_sock_path));
689f5a8c 318 strlcpy(init.zclient_serv_path, frr_zclientpath,
274f5abf 319 sizeof(init.zclient_serv_path));
4f04a76b 320
8429abe0 321 argc -= optind;
8429abe0 322 if (argc > 0 || (lflag && eflag))
4f04a76b 323 frr_help_exit(1);
8429abe0 324
eac6e3f0
RW		 325 /* check for root privileges */
326 if (geteuid() != 0) {
327 errno = EPERM;
4f04a76b 328 perror(ldpd_di.progname);
8429abe0
RW		 329 exit(1);
330 }
331
0bdeb5e5
DL		 332 if (lflag || eflag) {
333 struct zprivs_ids_t ids;
334
335 zprivs_preinit(&ldpd_privs);
336 zprivs_get_ids(&ids);
337
338 zlog_init(ldpd_di.progname, "LDP", 0,
339 ids.uid_normal, ids.gid_normal);
340 }
eac6e3f0 341 if (lflag)
274f5abf 342 lde();
eac6e3f0 343 else if (eflag)
274f5abf 344 ldpe();
8429abe0 345
eac6e3f0 346 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2ldpe) == -1)
8429abe0 347 fatal("socketpair");
28e8294c
RW		 348 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC,
349 pipe_parent2ldpe_sync) == -1)
350 fatal("socketpair");
eac6e3f0 351 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2lde) == -1)
8429abe0 352 fatal("socketpair");
28e8294c
RW		 353 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC,
354 pipe_parent2lde_sync) == -1)
355 fatal("socketpair");
eac6e3f0
RW		 356 sock_set_nonblock(pipe_parent2ldpe[0]);
357 sock_set_cloexec(pipe_parent2ldpe[0]);
358 sock_set_nonblock(pipe_parent2ldpe[1]);
359 sock_set_cloexec(pipe_parent2ldpe[1]);
28e8294c
RW		 360 sock_set_nonblock(pipe_parent2ldpe_sync[0]);
361 sock_set_cloexec(pipe_parent2ldpe_sync[0]);
362 sock_set_cloexec(pipe_parent2ldpe_sync[1]);
eac6e3f0
RW		 363 sock_set_nonblock(pipe_parent2lde[0]);
364 sock_set_cloexec(pipe_parent2lde[0]);
365 sock_set_nonblock(pipe_parent2lde[1]);
366 sock_set_cloexec(pipe_parent2lde[1]);
28e8294c
RW		 367 sock_set_nonblock(pipe_parent2lde_sync[0]);
368 sock_set_cloexec(pipe_parent2lde_sync[0]);
369 sock_set_cloexec(pipe_parent2lde_sync[1]);
8429abe0
RW		 370
371 /* start children */
372 lde_pid = start_child(PROC_LDE_ENGINE, saved_argv0,
274f5abf 373 pipe_parent2lde[1], pipe_parent2lde_sync[1]);
8429abe0 374 ldpe_pid = start_child(PROC_LDP_ENGINE, saved_argv0,
274f5abf 375 pipe_parent2ldpe[1], pipe_parent2ldpe_sync[1]);
8429abe0 376
16156c10 377 master = frr_init();
83139e57 378
ecbc5a37 379 vrf_init(NULL, NULL, NULL, NULL, NULL);
83139e57
RW		 380 access_list_init();
381 ldp_vty_init();
eac6e3f0 382 ldp_zebra_init(master);
8429abe0 383
56b8a8d2 384 /*
e4a82008
RW		 385 * Create base configuration with sane defaults. All configuration
386 * requests (e.g. CLI) act on vty_conf and then call ldp_config_apply()
387 * to merge the changes into ldpd_conf, which contains the actual
388 * running configuration.
56b8a8d2 389 */
e4a82008 390 ldpd_conf = config_new_empty();
1d75a89d 391 vty_conf = config_new_empty();
1d75a89d 392 QOBJ_REG(vty_conf, ldpd_conf);
56b8a8d2
RW		 393
394 /* read configuration file and daemonize */
83139e57
RW		 395 frr_config_fork();
396
e4a82008 397 /* apply configuration */
9124048d 398 thread_add_event(master, ldp_config_fork_apply, NULL, 0, &thread);
e4a82008 399
8429abe0 400 /* setup pipes to children */
28e8294c
RW		 401 if ((iev_ldpe = calloc(1, sizeof(struct imsgev))) == NULL ||
402 (iev_ldpe_sync = calloc(1, sizeof(struct imsgev))) == NULL ||
403 (iev_lde = calloc(1, sizeof(struct imsgev))) == NULL ||
404 (iev_lde_sync = calloc(1, sizeof(struct imsgev))) == NULL)
8429abe0
RW		 405 fatal(NULL);
406 imsg_init(&iev_ldpe->ibuf, pipe_parent2ldpe[0]);
eac6e3f0 407 iev_ldpe->handler_read = main_dispatch_ldpe;
66e78ae6
QY		 408 iev_ldpe->ev_read = NULL;
409 thread_add_read(master, iev_ldpe->handler_read, iev_ldpe, iev_ldpe->ibuf.fd,
410 &iev_ldpe->ev_read);
eac6e3f0 411 iev_ldpe->handler_write = ldp_write_handler;
28e8294c
RW		 412
413 imsg_init(&iev_ldpe_sync->ibuf, pipe_parent2ldpe_sync[0]);
414 iev_ldpe_sync->handler_read = main_dispatch_ldpe;
66e78ae6
QY		 415 iev_ldpe_sync->ev_read = NULL;
416 thread_add_read(master, iev_ldpe_sync->handler_read, iev_ldpe_sync, iev_ldpe_sync->ibuf.fd,
417 &iev_ldpe_sync->ev_read);
28e8294c 418 iev_ldpe_sync->handler_write = ldp_write_handler;
8429abe0 419
eac6e3f0
RW		 420 imsg_init(&iev_lde->ibuf, pipe_parent2lde[0]);
421 iev_lde->handler_read = main_dispatch_lde;
66e78ae6
QY		 422 iev_lde->ev_read = NULL;
423 thread_add_read(master, iev_lde->handler_read, iev_lde, iev_lde->ibuf.fd,
424 &iev_lde->ev_read);
eac6e3f0 425 iev_lde->handler_write = ldp_write_handler;
28e8294c
RW		 426
427 imsg_init(&iev_lde_sync->ibuf, pipe_parent2lde_sync[0]);
428 iev_lde_sync->handler_read = main_dispatch_lde;
66e78ae6
QY		 429 iev_lde_sync->ev_read = NULL;
430 thread_add_read(master, iev_lde_sync->handler_read, iev_lde_sync, iev_lde_sync->ibuf.fd,
431 &iev_lde_sync->ev_read);
28e8294c 432 iev_lde_sync->handler_write = ldp_write_handler;
8429abe0
RW		 433
434 if (main_imsg_send_ipc_sockets(&iev_ldpe->ibuf, &iev_lde->ibuf))
435 fatal("could not establish imsg links");
eac6e3f0
RW		 436 main_imsg_compose_both(IMSG_DEBUG_UPDATE, &ldp_debug,
437 sizeof(ldp_debug));
08e4b244 438 main_imsg_compose_both(IMSG_INIT, &init, sizeof(init));
8429abe0
RW		 439 main_imsg_send_config(ldpd_conf);
440
8429abe0
RW		 441 if (ldpd_conf->ipv4.flags & F_LDPD_AF_ENABLED)
442 main_imsg_send_net_sockets(AF_INET);
443 if (ldpd_conf->ipv6.flags & F_LDPD_AF_ENABLED)
444 main_imsg_send_net_sockets(AF_INET6);
445
16077f2f 446 frr_run(master);
8429abe0 447
8429abe0
RW		 448 /* NOTREACHED */
449 return (0);
450}
451
eac6e3f0 452static void
8429abe0
RW		 453ldpd_shutdown(void)
454{
455 pid_t pid;
456 int status;
457
03951374
DL		 458 frr_early_fini();
459
8429abe0
RW		 460 /* close pipes */
461 msgbuf_clear(&iev_ldpe->ibuf.w);
462 close(iev_ldpe->ibuf.fd);
463 msgbuf_clear(&iev_lde->ibuf.w);
464 close(iev_lde->ibuf.fd);
465
8429abe0 466 config_clear(ldpd_conf);
1d75a89d 467
e4a82008 468 ldp_config_reset(vty_conf);
1d75a89d
RW		 469 QOBJ_UNREG(vty_conf);
470 free(vty_conf);
8429abe0
RW		 471
472 log_debug("waiting for children to terminate");
0e8d7233 473
474 while (true) {
475 /* Wait for child process. */
8429abe0
RW		 476 pid = wait(&status);
477 if (pid == -1) {
0e8d7233 478 /* We got interrupted, try again. */
479 if (errno == EINTR)
480 continue;
481 /* No more processes were found. */
a0c49f50 482 if (errno == ECHILD)
0e8d7233 483 break;
484
485 /* Unhandled errno condition. */
486 fatal("wait");
487 /* UNREACHABLE */
488 }
489
490 /* We found something, lets announce it. */
491 if (WIFSIGNALED(status))
8429abe0 492 log_warnx("%s terminated; signal %d",
0e8d7233 493 (pid == lde_pid ? "label decision engine"
494 : "ldp engine"),
495 WTERMSIG(status));
496
497 /* Repeat until there are no more child processes. */
498 }
8429abe0
RW		 499
500 free(iev_ldpe);
501 free(iev_lde);
502
503 log_info("terminating");
64dffe25
RW		 504
505 vrf_terminate();
45a8eba9 506 access_list_reset();
64dffe25 507 ldp_zebra_destroy();
64dffe25 508
03951374 509 frr_fini();
8429abe0
RW		 510 exit(0);
511}
512
513static pid_t
274f5abf 514start_child(enum ldpd_process p, char *argv0, int fd_async, int fd_sync)
8429abe0 515{
0bdeb5e5 516 char *argv[7];
547322cb 517 int argc = 0, nullfd;
8429abe0
RW		 518 pid_t pid;
519
b12a63f1
MS		 520 pid = fork();
521 switch (pid) {
8429abe0
RW		 522 case -1:
523 fatal("cannot fork");
524 case 0:
525 break;
526 default:
28e8294c
RW		 527 close(fd_async);
528 close(fd_sync);
8429abe0
RW		 529 return (pid);
530 }
531
547322cb 532 nullfd = open("/dev/null", O_RDONLY | O_NOCTTY);
993bab89 533 if (nullfd == -1) {
450971aa 534 flog_err_sys(EC_LIB_SYSTEM_CALL,
09c866e3
QY		 535 "%s: failed to open /dev/null: %s", __func__,
536 safe_strerror(errno));
993bab89
RW		 537 } else {
538 dup2(nullfd, 0);
539 dup2(nullfd, 1);
540 dup2(nullfd, 2);
541 close(nullfd);
542 }
547322cb 543
28e8294c
RW		 544 if (dup2(fd_async, LDPD_FD_ASYNC) == -1)
545 fatal("cannot setup imsg async fd");
546 if (dup2(fd_sync, LDPD_FD_SYNC) == -1)
547 fatal("cannot setup imsg sync fd");
8429abe0
RW		 548
549 argv[argc++] = argv0;
550 switch (p) {
551 case PROC_MAIN:
552 fatalx("Can not start main process");
553 case PROC_LDE_ENGINE:
eac6e3f0 554 argv[argc++] = (char *)"-L";
8429abe0
RW		 555 break;
556 case PROC_LDP_ENGINE:
eac6e3f0 557 argv[argc++] = (char *)"-E";
8429abe0
RW		 558 break;
559 }
0bdeb5e5
DL		 560
561 argv[argc++] = (char *)"-u";
562 argv[argc++] = (char *)ldpd_privs.user;
563 argv[argc++] = (char *)"-g";
564 argv[argc++] = (char *)ldpd_privs.group;
8429abe0
RW		 565 argv[argc++] = NULL;
566
567 execvp(argv0, argv);
568 fatal("execvp");
569}
570
571/* imsg handling */
572/* ARGSUSED */
eac6e3f0
RW		 573static int
574main_dispatch_ldpe(struct thread *thread)
8429abe0 575{
eac6e3f0 576 struct imsgev *iev = THREAD_ARG(thread);
8429abe0
RW		 577 struct imsgbuf *ibuf = &iev->ibuf;
578 struct imsg imsg;
579 int af;
580 ssize_t n;
eac6e3f0 581 int shut = 0;
8429abe0 582
eac6e3f0
RW		 583 iev->ev_read = NULL;
584
585 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
586 fatal("imsg_read error");
587 if (n == 0) /* connection closed */
588 shut = 1;
8429abe0
RW		 589
590 for (;;) {
591 if ((n = imsg_get(ibuf, &imsg)) == -1)
592 fatal("imsg_get");
593
594 if (n == 0)
595 break;
596
597 switch (imsg.hdr.type) {
eac6e3f0
RW		 598 case IMSG_LOG:
599 logit(imsg.hdr.pid, "%s", (const char *)imsg.data);
600 break;
8429abe0
RW		 601 case IMSG_REQUEST_SOCKETS:
602 af = imsg.hdr.pid;
603 main_imsg_send_net_sockets(af);
604 break;
45a8eba9
RW		 605 case IMSG_ACL_CHECK:
606 if (imsg.hdr.len != IMSG_HEADER_SIZE +
607 sizeof(struct acl_check))
608 fatalx("IMSG_ACL_CHECK imsg with wrong len");
609 ldp_acl_reply(iev, (struct acl_check *)imsg.data);
610 break;
e1894ff7
KS		 611 case IMSG_LDP_SYNC_IF_STATE_UPDATE:
612 if (imsg.hdr.len != IMSG_HEADER_SIZE +
613 sizeof(struct ldp_igp_sync_if_state))
614 fatalx("IMSG_LDP_SYNC_IF_STATE_UPDATE imsg with wrong len");
615
616 ldp_sync_zebra_send_state_update((struct ldp_igp_sync_if_state *)imsg.data);
617 break;
8429abe0
RW		 618 default:
619 log_debug("%s: error handling imsg %d", __func__,
620 imsg.hdr.type);
621 break;
622 }
623 imsg_free(&imsg);
624 }
625 if (!shut)
626 imsg_event_add(iev);
627 else {
eac6e3f0 628 /* this pipe is dead, so remove the event handlers and exit */
50478845
MS		 629 thread_cancel(&iev->ev_read);
630 thread_cancel(&iev->ev_write);
eac6e3f0
RW		 631 ldpe_pid = 0;
632 if (lde_pid == 0)
633 ldpd_shutdown();
634 else
635 kill(lde_pid, SIGTERM);
8429abe0 636 }
eac6e3f0
RW		 637
638 return (0);
8429abe0
RW		 639}
640
641/* ARGSUSED */
eac6e3f0
RW		 642static int
643main_dispatch_lde(struct thread *thread)
8429abe0 644{
eac6e3f0 645 struct imsgev *iev = THREAD_ARG(thread);
8429abe0
RW		 646 struct imsgbuf *ibuf = &iev->ibuf;
647 struct imsg imsg;
648 ssize_t n;
649 int shut = 0;
077d336a 650 struct zapi_rlfa_response *rlfa_labels;
8429abe0 651
eac6e3f0
RW		 652 iev->ev_read = NULL;
653
654 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
655 fatal("imsg_read error");
656 if (n == 0) /* connection closed */
657 shut = 1;
8429abe0
RW		 658
659 for (;;) {
660 if ((n = imsg_get(ibuf, &imsg)) == -1)
661 fatal("imsg_get");
662
663 if (n == 0)
664 break;
665
666 switch (imsg.hdr.type) {
eac6e3f0
RW		 667 case IMSG_LOG:
668 logit(imsg.hdr.pid, "%s", (const char *)imsg.data);
669 break;
8429abe0
RW		 670 case IMSG_KLABEL_CHANGE:
671 if (imsg.hdr.len - IMSG_HEADER_SIZE !=
672 sizeof(struct kroute))
673 fatalx("invalid size of IMSG_KLABEL_CHANGE");
674 if (kr_change(imsg.data))
675 log_warnx("%s: error changing route", __func__);
676 break;
677 case IMSG_KLABEL_DELETE:
678 if (imsg.hdr.len - IMSG_HEADER_SIZE !=
679 sizeof(struct kroute))
680 fatalx("invalid size of IMSG_KLABEL_DELETE");
681 if (kr_delete(imsg.data))
682 log_warnx("%s: error deleting route", __func__);
683 break;
87b5f1b7
RW		 684 case IMSG_KPW_ADD:
685 case IMSG_KPW_DELETE:
686 case IMSG_KPW_SET:
687 case IMSG_KPW_UNSET:
8429abe0 688 if (imsg.hdr.len - IMSG_HEADER_SIZE !=
87b5f1b7 689 sizeof(struct zapi_pw))
8429abe0 690 fatalx("invalid size of IMSG_KPWLABEL_CHANGE");
87b5f1b7
RW		 691
692 switch (imsg.hdr.type) {
693 case IMSG_KPW_ADD:
694 if (kmpw_add(imsg.data))
3efd0893 695 log_warnx("%s: error adding pseudowire", __func__);
87b5f1b7
RW		 696 break;
697 case IMSG_KPW_DELETE:
698 if (kmpw_del(imsg.data))
3efd0893 699 log_warnx("%s: error deleting pseudowire", __func__);
87b5f1b7
RW		 700 break;
701 case IMSG_KPW_SET:
702 if (kmpw_set(imsg.data))
3efd0893 703 log_warnx("%s: error setting pseudowire", __func__);
87b5f1b7
RW		 704 break;
705 case IMSG_KPW_UNSET:
706 if (kmpw_unset(imsg.data))
3efd0893 707 log_warnx("%s: error unsetting pseudowire", __func__);
87b5f1b7
RW		 708 break;
709 }
8429abe0 710 break;
45a8eba9
RW		 711 case IMSG_ACL_CHECK:
712 if (imsg.hdr.len != IMSG_HEADER_SIZE +
713 sizeof(struct acl_check))
714 fatalx("IMSG_ACL_CHECK imsg with wrong len");
715 ldp_acl_reply(iev, (struct acl_check *)imsg.data);
716 break;
077d336a
RW		 717 case IMSG_RLFA_LABELS:
718 if (imsg.hdr.len != IMSG_HEADER_SIZE +
719 sizeof(struct zapi_rlfa_response)) {
720 log_warnx("%s: wrong imsg len", __func__);
721 break;
722 }
723 rlfa_labels = imsg.data;
724 ldp_zebra_send_rlfa_labels(rlfa_labels);
725 break;
8429abe0
RW		 726 default:
727 log_debug("%s: error handling imsg %d", __func__,
728 imsg.hdr.type);
729 break;
730 }
731 imsg_free(&imsg);
732 }
733 if (!shut)
734 imsg_event_add(iev);
735 else {
eac6e3f0 736 /* this pipe is dead, so remove the event handlers and exit */
50478845
MS		 737 thread_cancel(&iev->ev_read);
738 thread_cancel(&iev->ev_write);
eac6e3f0
RW		 739 lde_pid = 0;
740 if (ldpe_pid == 0)
741 ldpd_shutdown();
742 else
743 kill(ldpe_pid, SIGTERM);
8429abe0 744 }
eac6e3f0
RW		 745
746 return (0);
747}
748
749/* ARGSUSED */
750int
751ldp_write_handler(struct thread *thread)
752{
753 struct imsgev *iev = THREAD_ARG(thread);
754 struct imsgbuf *ibuf = &iev->ibuf;
755 ssize_t n;
756
757 iev->ev_write = NULL;
758
759 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
760 fatal("msgbuf_write");
761 if (n == 0) {
762 /* this pipe is dead, so remove the event handlers */
50478845
MS		 763 thread_cancel(&iev->ev_read);
764 thread_cancel(&iev->ev_write);
eac6e3f0
RW		 765 return (0);
766 }
767
768 imsg_event_add(iev);
769
770 return (0);
8429abe0
RW		 771}
772
773void
774main_imsg_compose_ldpe(int type, pid_t pid, void *data, uint16_t datalen)
775{
776 if (iev_ldpe == NULL)
777 return;
778 imsg_compose_event(iev_ldpe, type, 0, pid, -1, data, datalen);
779}
780
781void
782main_imsg_compose_lde(int type, pid_t pid, void *data, uint16_t datalen)
783{
784 imsg_compose_event(iev_lde, type, 0, pid, -1, data, datalen);
785}
786
eac6e3f0 787int
8429abe0
RW		 788main_imsg_compose_both(enum imsg_type type, void *buf, uint16_t len)
789{
eac6e3f0
RW		 790 if (iev_ldpe == NULL || iev_lde == NULL)
791 return (0);
8429abe0
RW		 792 if (imsg_compose_event(iev_ldpe, type, 0, 0, -1, buf, len) == -1)
793 return (-1);
794 if (imsg_compose_event(iev_lde, type, 0, 0, -1, buf, len) == -1)
795 return (-1);
796 return (0);
797}
798
799void
800imsg_event_add(struct imsgev *iev)
801{
28e8294c 802 if (iev->handler_read)
ffa2c898
QY		 803 thread_add_read(master, iev->handler_read, iev, iev->ibuf.fd,
804 &iev->ev_read);
8429abe0 805
28e8294c 806 if (iev->handler_write && iev->ibuf.w.queued)
ffa2c898
QY		 807 thread_add_write(master, iev->handler_write, iev,
808 iev->ibuf.fd, &iev->ev_write);
8429abe0
RW		 809}
810
811int
812imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
813 pid_t pid, int fd, void *data, uint16_t datalen)
814{
815 int ret;
816
817 if ((ret = imsg_compose(&iev->ibuf, type, peerid,
818 pid, fd, data, datalen)) != -1)
819 imsg_event_add(iev);
820 return (ret);
821}
822
823void
824evbuf_enqueue(struct evbuf *eb, struct ibuf *buf)
825{
826 ibuf_close(&eb->wbuf, buf);
827 evbuf_event_add(eb);
828}
829
830void
831evbuf_event_add(struct evbuf *eb)
832{
833 if (eb->wbuf.queued)
ffa2c898
QY		 834 thread_add_write(master, eb->handler, eb->arg, eb->wbuf.fd,
835 &eb->ev);
8429abe0
RW		 836}
837
838void
eac6e3f0 839evbuf_init(struct evbuf *eb, int fd, int (*handler)(struct thread *),
8429abe0
RW		 840 void *arg)
841{
842 msgbuf_init(&eb->wbuf);
843 eb->wbuf.fd = fd;
eac6e3f0
RW		 844 eb->handler = handler;
845 eb->arg = arg;
8429abe0
RW		 846}
847
848void
849evbuf_clear(struct evbuf *eb)
850{
50478845 851 thread_cancel(&eb->ev);
8429abe0
RW		 852 msgbuf_clear(&eb->wbuf);
853 eb->wbuf.fd = -1;
854}
855
856static int
857main_imsg_send_ipc_sockets(struct imsgbuf *ldpe_buf, struct imsgbuf *lde_buf)
858{
859 int pipe_ldpe2lde[2];
860
eac6e3f0 861 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_ldpe2lde) == -1)
8429abe0 862 return (-1);
eac6e3f0
RW		 863 sock_set_nonblock(pipe_ldpe2lde[0]);
864 sock_set_nonblock(pipe_ldpe2lde[1]);
8429abe0
RW		 865
866 if (imsg_compose(ldpe_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[0],
867 NULL, 0) == -1)
868 return (-1);
869 if (imsg_compose(lde_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[1],
870 NULL, 0) == -1)
871 return (-1);
872
873 return (0);
874}
875
876static void
877main_imsg_send_net_sockets(int af)
878{
eac6e3f0
RW		 879 if (!ldp_addrisset(af, &(ldp_af_conf_get(ldpd_conf, af))->trans_addr))
880 return;
881
8429abe0
RW		 882 main_imsg_send_net_socket(af, LDP_SOCKET_DISC);
883 main_imsg_send_net_socket(af, LDP_SOCKET_EDISC);
884 main_imsg_send_net_socket(af, LDP_SOCKET_SESSION);
885 imsg_compose_event(iev_ldpe, IMSG_SETUP_SOCKETS, af, 0, -1, NULL, 0);
886}
887
888static void
889main_imsg_send_net_socket(int af, enum socket_type type)
890{
891 int fd;
892
893 fd = ldp_create_socket(af, type);
894 if (fd == -1) {
3efd0893 895 log_warnx("%s: failed to create %s socket for address-family %s", __func__, socket_name(type), af_name(af));
8429abe0
RW		 896 return;
897 }
898
899 imsg_compose_event(iev_ldpe, IMSG_SOCKET_NET, af, 0, fd, &type,
900 sizeof(type));
901}
902
45a8eba9
RW		 903int
904ldp_acl_request(struct imsgev *iev, char *acl_name, int af,
905 union ldpd_addr *addr, uint8_t prefixlen)
906{
907 struct imsg imsg;
45a8eba9
RW		 908 struct acl_check acl_check;
909
910 if (acl_name[0] == '\0')
911 return FILTER_PERMIT;
912
913 /* build request */
914 strlcpy(acl_check.acl, acl_name, sizeof(acl_check.acl));
915 acl_check.af = af;
916 acl_check.addr = *addr;
917 acl_check.prefixlen = prefixlen;
918
919 /* send (blocking) */
920 imsg_compose_event(iev, IMSG_ACL_CHECK, 0, 0, -1, &acl_check,
921 sizeof(acl_check));
922 imsg_flush(&iev->ibuf);
923
924 /* receive (blocking) and parse result */
f67de3ee 925 if (imsg_read(&iev->ibuf) == -1)
45a8eba9 926 fatal("imsg_read error");
f67de3ee 927 if (imsg_get(&iev->ibuf, &imsg) == -1)
45a8eba9
RW		 928 fatal("imsg_get");
929 if (imsg.hdr.type != IMSG_ACL_CHECK ||
930 imsg.hdr.len != IMSG_HEADER_SIZE + sizeof(int))
931 fatalx("ldp_acl_request: invalid response");
932
933 return (*((int *)imsg.data));
934}
935
936void
937ldp_acl_reply(struct imsgev *iev, struct acl_check *acl_check)
938{
939 struct access_list *alist;
940 struct prefix prefix;
941 int result;
942
943 alist = access_list_lookup(family2afi(acl_check->af), acl_check->acl);
944 if (alist == NULL)
945 result = FILTER_DENY;
946 else {
947 prefix.family = acl_check->af;
948 switch (prefix.family) {
949 case AF_INET:
950 prefix.u.prefix4 = acl_check->addr.v4;
951 break;
952 case AF_INET6:
953 prefix.u.prefix6 = acl_check->addr.v6;
954 break;
955 default:
956 fatalx("ldp_acl_reply: unknown af");
957 }
958 prefix.prefixlen = acl_check->prefixlen;
959 result = access_list_apply(alist, &prefix);
960 }
961
962 imsg_compose_event(iev, IMSG_ACL_CHECK, 0, 0, -1, &result,
963 sizeof(result));
964}
965
8429abe0
RW		 966struct ldpd_af_conf *
967ldp_af_conf_get(struct ldpd_conf *xconf, int af)
968{
969 switch (af) {
970 case AF_INET:
971 return (&xconf->ipv4);
972 case AF_INET6:
973 return (&xconf->ipv6);
974 default:
975 fatalx("ldp_af_conf_get: unknown af");
976 }
977}
978
979struct ldpd_af_global *
980ldp_af_global_get(struct ldpd_global *xglobal, int af)
981{
982 switch (af) {
983 case AF_INET:
984 return (&xglobal->ipv4);
985 case AF_INET6:
986 return (&xglobal->ipv6);
987 default:
988 fatalx("ldp_af_global_get: unknown af");
989 }
990}
991
992int
993ldp_is_dual_stack(struct ldpd_conf *xconf)
994{
995 return ((xconf->ipv4.flags & F_LDPD_AF_ENABLED) &&
996 (xconf->ipv6.flags & F_LDPD_AF_ENABLED));
997}
998
eac6e3f0
RW		 999in_addr_t
1000ldp_rtr_id_get(struct ldpd_conf *xconf)
1001{
1002 if (xconf->rtr_id.s_addr != INADDR_ANY)
1003 return (xconf->rtr_id.s_addr);
1004 else
1005 return (global.rtr_id.s_addr);
1006}
1007
8429abe0
RW		 1008static int
1009main_imsg_send_config(struct ldpd_conf *xconf)
1010{
1011 struct iface *iface;
1012 struct tnbr *tnbr;
1013 struct nbr_params *nbrp;
1014 struct l2vpn *l2vpn;
1015 struct l2vpn_if *lif;
1016 struct l2vpn_pw *pw;
1017
1018 if (main_imsg_compose_both(IMSG_RECONF_CONF, xconf,
1019 sizeof(*xconf)) == -1)
1020 return (-1);
1021
7d3d7491 1022 RB_FOREACH(iface, iface_head, &xconf->iface_tree) {
8429abe0
RW		 1023 if (main_imsg_compose_both(IMSG_RECONF_IFACE, iface,
1024 sizeof(*iface)) == -1)
1025 return (-1);
1026 }
1027
7989cdba 1028 RB_FOREACH(tnbr, tnbr_head, &xconf->tnbr_tree) {
8429abe0
RW		 1029 if (main_imsg_compose_both(IMSG_RECONF_TNBR, tnbr,
1030 sizeof(*tnbr)) == -1)
1031 return (-1);
1032 }
1033
76c4abd1 1034 RB_FOREACH(nbrp, nbrp_head, &xconf->nbrp_tree) {
8429abe0
RW		 1035 if (main_imsg_compose_both(IMSG_RECONF_NBRP, nbrp,
1036 sizeof(*nbrp)) == -1)
1037 return (-1);
1038 }
1039
90d7e7bd 1040 RB_FOREACH(l2vpn, l2vpn_head, &xconf->l2vpn_tree) {
8429abe0
RW		 1041 if (main_imsg_compose_both(IMSG_RECONF_L2VPN, l2vpn,
1042 sizeof(*l2vpn)) == -1)
1043 return (-1);
1044
029c1958 1045 RB_FOREACH(lif, l2vpn_if_head, &l2vpn->if_tree) {
8429abe0
RW		 1046 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IF, lif,
1047 sizeof(*lif)) == -1)
1048 return (-1);
1049 }
20bacaeb 1050 RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree) {
8429abe0
RW		 1051 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_PW, pw,
1052 sizeof(*pw)) == -1)
1053 return (-1);
1054 }
20bacaeb 1055 RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree) {
eac6e3f0
RW		 1056 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IPW, pw,
1057 sizeof(*pw)) == -1)
1058 return (-1);
1059 }
8429abe0
RW		 1060 }
1061
1062 if (main_imsg_compose_both(IMSG_RECONF_END, NULL, 0) == -1)
1063 return (-1);
1064
1065 return (0);
1066}
1067
eac6e3f0 1068int
e4a82008 1069ldp_config_apply(struct vty *vty, struct ldpd_conf *xconf)
8429abe0 1070{
e4a82008
RW		 1071 /*
1072 * When reading from a configuration file (startup and sighup), we
1073 * call merge_config() only once after the whole config has been read.
1074 * This is the optimal and least disruptive way to update the running
1075 * configuration.
1076 */
1077 if (vty && vty->type == VTY_FILE)
dbce3582
RW		 1078 return (0);
1079
56b8a8d2 1080 ldp_config_normalize(xconf);
8429abe0
RW		 1081
1082 if (main_imsg_send_config(xconf) == -1)
1083 return (-1);
1084
56b8a8d2 1085 merge_config(ldpd_conf, xconf);
8429abe0 1086
56b8a8d2 1087 return (0);
b67c140b
RW		 1088}
1089
eac6e3f0 1090static void
56b8a8d2 1091ldp_config_normalize(struct ldpd_conf *xconf)
eac6e3f0 1092{
7d0eeac1
RW		 1093 struct iface *iface, *itmp;
1094 struct nbr_params *nbrp, *ntmp;
eac6e3f0 1095 struct l2vpn *l2vpn;
7d0eeac1 1096 struct l2vpn_pw *pw, *ptmp;
eac6e3f0
RW		 1097
1098 if (!(xconf->flags & F_LDPD_ENABLED))
56b8a8d2 1099 ldp_config_reset_main(xconf);
eac6e3f0
RW		 1100 else {
1101 if (!(xconf->ipv4.flags & F_LDPD_AF_ENABLED))
56b8a8d2 1102 ldp_config_reset_af(xconf, AF_INET);
eac6e3f0 1103 if (!(xconf->ipv6.flags & F_LDPD_AF_ENABLED))
56b8a8d2 1104 ldp_config_reset_af(xconf, AF_INET6);
eac6e3f0 1105
7d0eeac1
RW		 1106 RB_FOREACH_SAFE(iface, iface_head, &xconf->iface_tree, itmp) {
1107 if (iface->ipv4.enabled || iface->ipv6.enabled)
eac6e3f0
RW		 1108 continue;
1109
1d75a89d 1110 QOBJ_UNREG(iface);
7d0eeac1
RW		 1111 RB_REMOVE(iface_head, &vty_conf->iface_tree, iface);
1112 free(iface);
eac6e3f0 1113 }
7d0eeac1
RW		 1114
1115 RB_FOREACH_SAFE(nbrp, nbrp_head, &xconf->nbrp_tree, ntmp) {
1116 if (nbrp->flags & (F_NBRP_KEEPALIVE|F_NBRP_GTSM))
1117 continue;
1118 if (nbrp->auth.method != AUTH_NONE)
1119 continue;
1120
1d75a89d 1121 QOBJ_UNREG(nbrp);
7d0eeac1
RW		 1122 RB_REMOVE(nbrp_head, &vty_conf->nbrp_tree, nbrp);
1123 free(nbrp);
1124 }
1125 }
1126
1127 RB_FOREACH(l2vpn, l2vpn_head, &xconf->l2vpn_tree) {
1128 RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_tree, ptmp) {
1129 if (!(pw->flags & F_PW_STATIC_NBR_ADDR)) {
1130 pw->af = AF_INET;
1131 pw->addr.v4 = pw->lsr_id;
1132 }
1133
1134 if (pw->lsr_id.s_addr != INADDR_ANY && pw->pwid != 0)
eac6e3f0 1135 continue;
7d0eeac1
RW		 1136 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw);
1137 RB_INSERT(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
1138 }
1139 RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree,
1140 ptmp) {
1141 if (!(pw->flags & F_PW_STATIC_NBR_ADDR)) {
1142 pw->af = AF_INET;
1143 pw->addr.v4 = pw->lsr_id;
1144 }
eac6e3f0 1145
7d0eeac1
RW		 1146 if (pw->lsr_id.s_addr == INADDR_ANY || pw->pwid == 0)
1147 continue;
1148 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
1149 RB_INSERT(l2vpn_pw_head, &l2vpn->pw_tree, pw);
eac6e3f0
RW		 1150 }
1151 }
1152}
1153
e4a82008
RW		 1154static void
1155ldp_config_reset(struct ldpd_conf *conf)
1156{
1157 ldp_config_reset_main(conf);
1158 ldp_config_reset_l2vpns(conf);
1159}
1160
eac6e3f0 1161static void
56b8a8d2 1162ldp_config_reset_main(struct ldpd_conf *conf)
eac6e3f0
RW		 1163{
1164 struct iface *iface;
1165 struct nbr_params *nbrp;
1166
55cd0f61
DS		 1167 while (!RB_EMPTY(iface_head, &conf->iface_tree)) {
1168 iface = RB_ROOT(iface_head, &conf->iface_tree);
1169
1d75a89d 1170 QOBJ_UNREG(iface);
7d3d7491 1171 RB_REMOVE(iface_head, &conf->iface_tree, iface);
eac6e3f0
RW		 1172 free(iface);
1173 }
1174
55cd0f61
DS		 1175 while (!RB_EMPTY(nbrp_head, &conf->nbrp_tree)) {
1176 nbrp = RB_ROOT(nbrp_head, &conf->nbrp_tree);
1177
1d75a89d 1178 QOBJ_UNREG(nbrp);
76c4abd1 1179 RB_REMOVE(nbrp_head, &conf->nbrp_tree, nbrp);
eac6e3f0
RW		 1180 free(nbrp);
1181 }
1182
1183 conf->rtr_id.s_addr = INADDR_ANY;
56b8a8d2
RW		 1184 ldp_config_reset_af(conf, AF_INET);
1185 ldp_config_reset_af(conf, AF_INET6);
eac6e3f0
RW		 1186 conf->lhello_holdtime = LINK_DFLT_HOLDTIME;
1187 conf->lhello_interval = DEFAULT_HELLO_INTERVAL;
1188 conf->thello_holdtime = TARGETED_DFLT_HOLDTIME;
1189 conf->thello_interval = DEFAULT_HELLO_INTERVAL;
e1894ff7 1190 conf->wait_for_sync_interval = DFLT_WAIT_FOR_SYNC;
eac6e3f0
RW		 1191 conf->trans_pref = DUAL_STACK_LDPOV6;
1192 conf->flags = 0;
1193}
1194
1195static void
56b8a8d2 1196ldp_config_reset_af(struct ldpd_conf *conf, int af)
eac6e3f0
RW		 1197{
1198 struct ldpd_af_conf *af_conf;
1199 struct iface *iface;
1200 struct iface_af *ia;
1201 struct tnbr *tnbr, *ttmp;
1202
7d3d7491 1203 RB_FOREACH(iface, iface_head, &conf->iface_tree) {
eac6e3f0
RW		 1204 ia = iface_af_get(iface, af);
1205 ia->enabled = 0;
1206 }
1207
7989cdba 1208 RB_FOREACH_SAFE(tnbr, tnbr_head, &conf->tnbr_tree, ttmp) {
eac6e3f0
RW		 1209 if (tnbr->af != af)
1210 continue;
1211
1d75a89d 1212 QOBJ_UNREG(tnbr);
7989cdba 1213 RB_REMOVE(tnbr_head, &conf->tnbr_tree, tnbr);
eac6e3f0
RW		 1214 free(tnbr);
1215 }
1216
1217 af_conf = ldp_af_conf_get(conf, af);
1218 af_conf->keepalive = 180;
1219 af_conf->lhello_holdtime = 0;
1220 af_conf->lhello_interval = 0;
1221 af_conf->thello_holdtime = 0;
1222 af_conf->thello_interval = 0;
1223 memset(&af_conf->trans_addr, 0, sizeof(af_conf->trans_addr));
1224 af_conf->flags = 0;
1225}
1226
1d75a89d
RW		 1227static void
1228ldp_config_reset_l2vpns(struct ldpd_conf *conf)
eac6e3f0 1229{
1d75a89d
RW		 1230 struct l2vpn *l2vpn;
1231 struct l2vpn_if *lif;
1232 struct l2vpn_pw *pw;
eac6e3f0 1233
55cd0f61
DS		 1234 while (!RB_EMPTY(l2vpn_head, &conf->l2vpn_tree)) {
1235 l2vpn = RB_ROOT(l2vpn_head, &conf->l2vpn_tree);
1236 while (!RB_EMPTY(l2vpn_if_head, &l2vpn->if_tree)) {
1237 lif = RB_ROOT(l2vpn_if_head, &l2vpn->if_tree);
1238
1d75a89d
RW		 1239 QOBJ_UNREG(lif);
1240 RB_REMOVE(l2vpn_if_head, &l2vpn->if_tree, lif);
1241 free(lif);
eac6e3f0 1242 }
55cd0f61
DS		 1243 while (!RB_EMPTY(l2vpn_pw_head, &l2vpn->pw_tree)) {
1244 pw = RB_ROOT(l2vpn_pw_head, &l2vpn->pw_tree);
1245
1d75a89d
RW		 1246 QOBJ_UNREG(pw);
1247 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw);
1248 free(pw);
eac6e3f0 1249 }
55cd0f61
DS		 1250 while (!RB_EMPTY(l2vpn_pw_head, &l2vpn->pw_inactive_tree)) {
1251 pw = RB_ROOT(l2vpn_pw_head, &l2vpn->pw_inactive_tree);
1252
1d75a89d
RW		 1253 QOBJ_UNREG(pw);
1254 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
1255 free(pw);
eac6e3f0 1256 }
1d75a89d
RW		 1257 QOBJ_UNREG(l2vpn);
1258 RB_REMOVE(l2vpn_head, &conf->l2vpn_tree, l2vpn);
1259 free(l2vpn);
eac6e3f0 1260 }
eac6e3f0
RW		 1261}
1262
1263void
1264ldp_clear_config(struct ldpd_conf *xconf)
1265{
1266 struct iface *iface;
1267 struct tnbr *tnbr;
1268 struct nbr_params *nbrp;
1269 struct l2vpn *l2vpn;
1270
55cd0f61
DS		 1271 while (!RB_EMPTY(iface_head, &xconf->iface_tree)) {
1272 iface = RB_ROOT(iface_head, &xconf->iface_tree);
1273
7d3d7491 1274 RB_REMOVE(iface_head, &xconf->iface_tree, iface);
eac6e3f0
RW		 1275 free(iface);
1276 }
55cd0f61
DS		 1277 while (!RB_EMPTY(tnbr_head, &xconf->tnbr_tree)) {
1278 tnbr = RB_ROOT(tnbr_head, &xconf->tnbr_tree);
1279
7989cdba 1280 RB_REMOVE(tnbr_head, &xconf->tnbr_tree, tnbr);
eac6e3f0
RW		 1281 free(tnbr);
1282 }
55cd0f61
DS		 1283 while (!RB_EMPTY(nbrp_head, &xconf->nbrp_tree)) {
1284 nbrp = RB_ROOT(nbrp_head, &xconf->nbrp_tree);
1285
76c4abd1 1286 RB_REMOVE(nbrp_head, &xconf->nbrp_tree, nbrp);
eac6e3f0
RW		 1287 free(nbrp);
1288 }
55cd0f61
DS		 1289 while (!RB_EMPTY(l2vpn_head, &xconf->l2vpn_tree)) {
1290 l2vpn = RB_ROOT(l2vpn_head, &xconf->l2vpn_tree);
1291
90d7e7bd 1292 RB_REMOVE(l2vpn_head, &xconf->l2vpn_tree, l2vpn);
eac6e3f0
RW		 1293 l2vpn_del(l2vpn);
1294 }
1295
1296 free(xconf);
1297}
1298
1d75a89d
RW		 1299#define COPY(a, b) do { \
1300 a = malloc(sizeof(*a)); \
1301 if (a == NULL) \
1302 fatal(__func__); \
1303 *a = *b; \
1304 } while (0)
1305
56b8a8d2
RW		 1306void
1307merge_config(struct ldpd_conf *conf, struct ldpd_conf *xconf)
8429abe0
RW		 1308{
1309 merge_global(conf, xconf);
1310 merge_af(AF_INET, &conf->ipv4, &xconf->ipv4);
1311 merge_af(AF_INET6, &conf->ipv6, &xconf->ipv6);
56b8a8d2
RW		 1312 merge_ifaces(conf, xconf);
1313 merge_tnbrs(conf, xconf);
1314 merge_nbrps(conf, xconf);
1315 merge_l2vpns(conf, xconf);
8429abe0
RW		 1316}
1317
1318static void
1319merge_global(struct ldpd_conf *conf, struct ldpd_conf *xconf)
1320{
e1894ff7
KS		 1321 /* Removing global LDP config requires resetting LDP IGP Sync FSM */
1322 if ((conf->flags & F_LDPD_ENABLED) &&
1323 (!(xconf->flags & F_LDPD_ENABLED)))
1324 {
1325 if (ldpd_process == PROC_LDP_ENGINE)
1326 ldp_sync_fsm_reset_all();
1327 }
1328
8429abe0
RW		 1329 /* change of router-id requires resetting all neighborships */
1330 if (conf->rtr_id.s_addr != xconf->rtr_id.s_addr) {
1331 if (ldpd_process == PROC_LDP_ENGINE) {
45a8eba9 1332 ldpe_reset_nbrs(AF_UNSPEC);
8429abe0
RW		 1333 if (conf->rtr_id.s_addr == INADDR_ANY ||
1334 xconf->rtr_id.s_addr == INADDR_ANY) {
1335 if_update_all(AF_UNSPEC);
1336 tnbr_update_all(AF_UNSPEC);
1337 }
1338 }
1339 conf->rtr_id = xconf->rtr_id;
1340 }
1341
aff1743c
KS		 1342 /*
1343 * Configuration of ordered-control or independent-control
1344 * requires resetting all neighborships.
1345 */
1346 if ((conf->flags & F_LDPD_ORDERED_CONTROL) !=
1347 (xconf->flags & F_LDPD_ORDERED_CONTROL))
1348 ldpe_reset_nbrs(AF_UNSPEC);
1349
eac6e3f0
RW		 1350 conf->lhello_holdtime = xconf->lhello_holdtime;
1351 conf->lhello_interval = xconf->lhello_interval;
1352 conf->thello_holdtime = xconf->thello_holdtime;
1353 conf->thello_interval = xconf->thello_interval;
e1894ff7 1354 conf->wait_for_sync_interval = xconf->wait_for_sync_interval;
eac6e3f0 1355
8429abe0
RW		 1356 if (conf->trans_pref != xconf->trans_pref) {
1357 if (ldpd_process == PROC_LDP_ENGINE)
1358 ldpe_reset_ds_nbrs();
1359 conf->trans_pref = xconf->trans_pref;
1360 }
1361
1362 if ((conf->flags & F_LDPD_DS_CISCO_INTEROP) !=
1363 (xconf->flags & F_LDPD_DS_CISCO_INTEROP)) {
1364 if (ldpd_process == PROC_LDP_ENGINE)
1365 ldpe_reset_ds_nbrs();
1366 }
1367
f9a4d683
KS		 1368 if (ldpd_process == PROC_LDP_ENGINE)
1369 ldpe_set_config_change_time();
1370
8429abe0
RW		 1371 conf->flags = xconf->flags;
1372}
1373
1374static void
1375merge_af(int af, struct ldpd_af_conf *af_conf, struct ldpd_af_conf *xa)
1376{
45a8eba9
RW		 1377 int stop_init_backoff = 0;
1378 int remove_dynamic_tnbrs = 0;
1379 int change_egress_label = 0;
86753560 1380 int change_host_label = 0;
45a8eba9
RW		 1381 int reset_nbrs_ipv4 = 0;
1382 int reset_nbrs = 0;
1383 int update_sockets = 0;
95535717 1384 int change_ldp_disabled = 0;
45a8eba9
RW		 1385
1386 /* update timers */
8429abe0
RW		 1387 if (af_conf->keepalive != xa->keepalive) {
1388 af_conf->keepalive = xa->keepalive;
45a8eba9 1389 stop_init_backoff = 1;
8429abe0 1390 }
eac6e3f0
RW		 1391 af_conf->lhello_holdtime = xa->lhello_holdtime;
1392 af_conf->lhello_interval = xa->lhello_interval;
8429abe0
RW		 1393 af_conf->thello_holdtime = xa->thello_holdtime;
1394 af_conf->thello_interval = xa->thello_interval;
1395
1396 /* update flags */
45a8eba9 1397 if ((af_conf->flags & F_LDPD_AF_THELLO_ACCEPT) &&
8429abe0 1398 !(xa->flags & F_LDPD_AF_THELLO_ACCEPT))
45a8eba9 1399 remove_dynamic_tnbrs = 1;
8429abe0
RW		 1400 if ((af_conf->flags & F_LDPD_AF_NO_GTSM) !=
1401 (xa->flags & F_LDPD_AF_NO_GTSM)) {
1402 if (af == AF_INET6)
1403 /* need to set/unset IPV6_MINHOPCOUNT */
1404 update_sockets = 1;
45a8eba9 1405 else
8429abe0 1406 /* for LDPv4 just resetting the neighbors is enough */
45a8eba9 1407 reset_nbrs_ipv4 = 1;
8429abe0 1408 }
8429abe0
RW		 1409 if ((af_conf->flags & F_LDPD_AF_EXPNULL) !=
1410 (xa->flags & F_LDPD_AF_EXPNULL))
45a8eba9 1411 change_egress_label = 1;
86753560 1412
1413 /* changing config of host only fec filtering */
1414 if ((af_conf->flags & F_LDPD_AF_ALLOCHOSTONLY)
1415 != (xa->flags & F_LDPD_AF_ALLOCHOSTONLY))
1416 change_host_label = 1;
1417
95535717 1418 /* disabling LDP for address family */
1419 if ((af_conf->flags & F_LDPD_AF_ENABLED) &&
1420 !(xa->flags & F_LDPD_AF_ENABLED))
1421 change_ldp_disabled = 1;
1422
8429abe0
RW		 1423 af_conf->flags = xa->flags;
1424
45a8eba9 1425 /* update the transport address */
8429abe0
RW		 1426 if (ldp_addrcmp(af, &af_conf->trans_addr, &xa->trans_addr)) {
1427 af_conf->trans_addr = xa->trans_addr;
1428 update_sockets = 1;
1429 }
1430
45a8eba9 1431 /* update ACLs */
2d1aa1e8 1432 if (strcmp(af_conf->acl_label_allocate_for, xa->acl_label_allocate_for))
86753560 1433 change_host_label = 1;
1434
45a8eba9
RW		 1435 if (strcmp(af_conf->acl_label_advertise_to,
1436 xa->acl_label_advertise_to) ||
1437 strcmp(af_conf->acl_label_advertise_for,
1438 xa->acl_label_advertise_for) ||
1439 strcmp(af_conf->acl_label_accept_from,
1440 xa->acl_label_accept_from) ||
1441 strcmp(af_conf->acl_label_accept_for,
1442 xa->acl_label_accept_for))
1443 reset_nbrs = 1;
1444 if (strcmp(af_conf->acl_thello_accept_from, xa->acl_thello_accept_from))
1445 remove_dynamic_tnbrs = 1;
1446 if (strcmp(af_conf->acl_label_expnull_for, xa->acl_label_expnull_for))
1447 change_egress_label = 1;
1448 strlcpy(af_conf->acl_thello_accept_from, xa->acl_thello_accept_from,
1449 sizeof(af_conf->acl_thello_accept_from));
1450 strlcpy(af_conf->acl_label_allocate_for, xa->acl_label_allocate_for,
1451 sizeof(af_conf->acl_label_allocate_for));
1452 strlcpy(af_conf->acl_label_advertise_to, xa->acl_label_advertise_to,
1453 sizeof(af_conf->acl_label_advertise_to));
1454 strlcpy(af_conf->acl_label_advertise_for, xa->acl_label_advertise_for,
1455 sizeof(af_conf->acl_label_advertise_for));
1456 strlcpy(af_conf->acl_label_accept_from, xa->acl_label_accept_from,
1457 sizeof(af_conf->acl_label_accept_from));
1458 strlcpy(af_conf->acl_label_accept_for, xa->acl_label_accept_for,
1459 sizeof(af_conf->acl_label_accept_for));
1460 strlcpy(af_conf->acl_label_expnull_for, xa->acl_label_expnull_for,
1461 sizeof(af_conf->acl_label_expnull_for));
1462
1463 /* apply the new configuration */
1464 switch (ldpd_process) {
1465 case PROC_LDE_ENGINE:
1466 if (change_egress_label)
1467 lde_change_egress_label(af);
86753560 1468 if (change_host_label)
2d1aa1e8 1469 lde_change_allocate_filter(af);
95535717 1470 if (change_ldp_disabled)
1471 lde_route_update_release_all(af);
1472
45a8eba9
RW		 1473 break;
1474 case PROC_LDP_ENGINE:
1475 if (stop_init_backoff)
1476 ldpe_stop_init_backoff(af);
1477 if (remove_dynamic_tnbrs)
1478 ldpe_remove_dynamic_tnbrs(af);
1479 if (reset_nbrs)
1480 ldpe_reset_nbrs(AF_UNSPEC);
1481 else if (reset_nbrs_ipv4)
1482 ldpe_reset_nbrs(AF_INET);
1483 break;
1484 case PROC_MAIN:
1485 if (update_sockets && iev_ldpe)
1486 imsg_compose_event(iev_ldpe, IMSG_CLOSE_SOCKETS, af,
1487 0, -1, NULL, 0);
1488 break;
1489 }
8429abe0
RW		 1490}
1491
1492static void
56b8a8d2 1493merge_ifaces(struct ldpd_conf *conf, struct ldpd_conf *xconf)
8429abe0
RW		 1494{
1495 struct iface *iface, *itmp, *xi;
1496
7d3d7491 1497 RB_FOREACH_SAFE(iface, iface_head, &conf->iface_tree, itmp) {
95535717 1498 /* find deleted interfaces, which occurs when LDP is removed
1499 * for all address families
1500 */
f67de3ee 1501 if (if_lookup_name(xconf, iface->name) == NULL) {
4af8997d 1502 switch (ldpd_process) {
4af8997d 1503 case PROC_LDP_ENGINE:
1d75a89d 1504 ldpe_if_exit(iface);
4af8997d 1505 break;
1d75a89d 1506 case PROC_LDE_ENGINE:
95535717 1507 if (iface->ipv4.enabled)
1508 lde_route_update_release(iface,
1509 AF_INET);
1510 if (iface->ipv6.enabled)
1511 lde_route_update_release(iface,
1512 AF_INET6);
1513 break;
4af8997d 1514 case PROC_MAIN:
4af8997d
RW		 1515 break;
1516 }
1d75a89d 1517 RB_REMOVE(iface_head, &conf->iface_tree, iface);
8429abe0
RW		 1518 free(iface);
1519 }
1520 }
7d3d7491 1521 RB_FOREACH_SAFE(xi, iface_head, &xconf->iface_tree, itmp) {
8429abe0 1522 /* find new interfaces */
eac6e3f0 1523 if ((iface = if_lookup_name(conf, xi->name)) == NULL) {
1d75a89d
RW		 1524 COPY(iface, xi);
1525 RB_INSERT(iface_head, &conf->iface_tree, iface);
8429abe0 1526
1d75a89d
RW		 1527 switch (ldpd_process) {
1528 case PROC_LDP_ENGINE:
1529 ldpe_if_init(iface);
1530 break;
1531 case PROC_LDE_ENGINE:
1532 break;
1533 case PROC_MAIN:
4af8997d 1534 /* resend addresses to activate new interfaces */
1d75a89d
RW		 1535 kif_redistribute(iface->name);
1536 break;
4af8997d 1537 }
8429abe0
RW		 1538 continue;
1539 }
1540
95535717 1541 /* update labels when adding or removing ldp on an
1542 * interface
1543 */
1544 if (ldpd_process == PROC_LDE_ENGINE) {
1545 /* if we are removing lpd config for an address
1546 * family on an interface then advertise routes
1547 * learned over this interface as if they were
1548 * connected routes
1549 */
1550 if (iface->ipv4.enabled && !xi->ipv4.enabled)
1551 lde_route_update_release(iface, AF_INET);
1552 if (iface->ipv6.enabled && !xi->ipv6.enabled)
1553 lde_route_update_release(iface, AF_INET6);
1554
1555 /* if we are adding lpd config for an address
1556 * family on an interface then add proper labels
1557 */
1558 if (!iface->ipv4.enabled && xi->ipv4.enabled)
1559 lde_route_update(iface, AF_INET);
1560 if (!iface->ipv6.enabled && xi->ipv6.enabled)
1561 lde_route_update(iface, AF_INET6);
1562 }
1563
8429abe0
RW		 1564 /* update existing interfaces */
1565 merge_iface_af(&iface->ipv4, &xi->ipv4);
1566 merge_iface_af(&iface->ipv6, &xi->ipv6);
8429abe0
RW		 1567 }
1568}
1569
1570static void
1571merge_iface_af(struct iface_af *ia, struct iface_af *xi)
1572{
1573 if (ia->enabled != xi->enabled) {
1574 ia->enabled = xi->enabled;
1575 if (ldpd_process == PROC_LDP_ENGINE)
61cd1100 1576 ldp_if_update(ia->iface, ia->af);
8429abe0
RW		 1577 }
1578 ia->hello_holdtime = xi->hello_holdtime;
1579 ia->hello_interval = xi->hello_interval;
1580}
1581
1582static void
56b8a8d2 1583merge_tnbrs(struct ldpd_conf *conf, struct ldpd_conf *xconf)
8429abe0
RW		 1584{
1585 struct tnbr *tnbr, *ttmp, *xt;
1586
7989cdba 1587 RB_FOREACH_SAFE(tnbr, tnbr_head, &conf->tnbr_tree, ttmp) {
8429abe0
RW		 1588 if (!(tnbr->flags & F_TNBR_CONFIGURED))
1589 continue;
1590
1591 /* find deleted tnbrs */
f67de3ee 1592 if (tnbr_find(xconf, tnbr->af, &tnbr->addr) == NULL) {
4af8997d 1593 switch (ldpd_process) {
4af8997d 1594 case PROC_LDP_ENGINE:
8429abe0 1595 tnbr->flags &= ~F_TNBR_CONFIGURED;
7989cdba 1596 tnbr_check(conf, tnbr);
4af8997d 1597 break;
1d75a89d 1598 case PROC_LDE_ENGINE:
4af8997d 1599 case PROC_MAIN:
7989cdba 1600 RB_REMOVE(tnbr_head, &conf->tnbr_tree, tnbr);
8429abe0 1601 free(tnbr);
4af8997d 1602 break;
8429abe0
RW		 1603 }
1604 }
1605 }
7989cdba 1606 RB_FOREACH_SAFE(xt, tnbr_head, &xconf->tnbr_tree, ttmp) {
8429abe0
RW		 1607 /* find new tnbrs */
1608 if ((tnbr = tnbr_find(conf, xt->af, &xt->addr)) == NULL) {
1d75a89d
RW		 1609 COPY(tnbr, xt);
1610 RB_INSERT(tnbr_head, &conf->tnbr_tree, tnbr);
8429abe0 1611
4af8997d 1612 switch (ldpd_process) {
4af8997d 1613 case PROC_LDP_ENGINE:
1d75a89d 1614 tnbr_update(tnbr);
4af8997d 1615 break;
1d75a89d 1616 case PROC_LDE_ENGINE:
4af8997d 1617 case PROC_MAIN:
4af8997d
RW		 1618 break;
1619 }
8429abe0
RW		 1620 continue;
1621 }
1622
1623 /* update existing tnbrs */
1624 if (!(tnbr->flags & F_TNBR_CONFIGURED))
1625 tnbr->flags |= F_TNBR_CONFIGURED;
8429abe0
RW		 1626 }
1627}
1628
1629static void
56b8a8d2 1630merge_nbrps(struct ldpd_conf *conf, struct ldpd_conf *xconf)
8429abe0
RW		 1631{
1632 struct nbr_params *nbrp, *ntmp, *xn;
1633 struct nbr *nbr;
1634 int nbrp_changed;
1635
76c4abd1 1636 RB_FOREACH_SAFE(nbrp, nbrp_head, &conf->nbrp_tree, ntmp) {
8429abe0 1637 /* find deleted nbrps */
61b5ae3d
DS		 1638 if (nbr_params_find(xconf, nbrp->lsr_id) != NULL)
1639 continue;
1640
1641 switch (ldpd_process) {
1642 case PROC_LDP_ENGINE:
1643 nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr);
1644 if (nbr) {
1645 session_shutdown(nbr, S_SHUTDOWN, 0, 0);
eac6e3f0 1646#ifdef __OpenBSD__
61b5ae3d 1647 pfkey_remove(nbr);
eac6e3f0 1648#else
61b5ae3d
DS		 1649 sock_set_md5sig(
1650 (ldp_af_global_get(&global, nbr->af))
1651 ->ldp_session_socket,
1652 nbr->af, &nbr->raddr, NULL);
eac6e3f0 1653#endif
61b5ae3d
DS		 1654 nbr->auth.method = AUTH_NONE;
1655 if (nbr_session_active_role(nbr))
1656 nbr_establish_connection(nbr);
8429abe0 1657 }
61b5ae3d
DS		 1658 break;
1659 case PROC_LDE_ENGINE:
1660 case PROC_MAIN:
1661 break;
8429abe0 1662 }
61b5ae3d
DS		 1663 RB_REMOVE(nbrp_head, &conf->nbrp_tree, nbrp);
1664 free(nbrp);
8429abe0 1665 }
61b5ae3d 1666
76c4abd1 1667 RB_FOREACH_SAFE(xn, nbrp_head, &xconf->nbrp_tree, ntmp) {
8429abe0
RW		 1668 /* find new nbrps */
1669 if ((nbrp = nbr_params_find(conf, xn->lsr_id)) == NULL) {
1d75a89d
RW		 1670 COPY(nbrp, xn);
1671 RB_INSERT(nbrp_head, &conf->nbrp_tree, nbrp);
8429abe0 1672
4af8997d 1673 switch (ldpd_process) {
4af8997d 1674 case PROC_LDP_ENGINE:
1d75a89d 1675 nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr);
8429abe0
RW		 1676 if (nbr) {
1677 session_shutdown(nbr, S_SHUTDOWN, 0, 0);
1d75a89d 1678 nbr->auth.method = nbrp->auth.method;
eac6e3f0 1679#ifdef __OpenBSD__
1d75a89d 1680 if (pfkey_establish(nbr, nbrp) == -1)
8429abe0 1681 fatalx("pfkey setup failed");
eac6e3f0
RW		 1682#else
1683 sock_set_md5sig(
1684 (ldp_af_global_get(&global,
1685 nbr->af))->ldp_session_socket,
1686 nbr->af, &nbr->raddr,
1d75a89d 1687 nbrp->auth.md5key);
eac6e3f0 1688#endif
8429abe0
RW		 1689 if (nbr_session_active_role(nbr))
1690 nbr_establish_connection(nbr);
1691 }
4af8997d 1692 break;
1d75a89d 1693 case PROC_LDE_ENGINE:
4af8997d 1694 case PROC_MAIN:
4af8997d 1695 break;
8429abe0
RW		 1696 }
1697 continue;
1698 }
1699
1700 /* update existing nbrps */
1701 if (nbrp->flags != xn->flags ||
1702 nbrp->keepalive != xn->keepalive ||
1703 nbrp->gtsm_enabled != xn->gtsm_enabled ||
1704 nbrp->gtsm_hops != xn->gtsm_hops ||
1705 nbrp->auth.method != xn->auth.method ||
1706 strcmp(nbrp->auth.md5key, xn->auth.md5key) != 0)
1707 nbrp_changed = 1;
1708 else
1709 nbrp_changed = 0;
1710
1711 nbrp->keepalive = xn->keepalive;
1712 nbrp->gtsm_enabled = xn->gtsm_enabled;
1713 nbrp->gtsm_hops = xn->gtsm_hops;
1714 nbrp->auth.method = xn->auth.method;
1715 strlcpy(nbrp->auth.md5key, xn->auth.md5key,
1716 sizeof(nbrp->auth.md5key));
1717 nbrp->auth.md5key_len = xn->auth.md5key_len;
1718 nbrp->flags = xn->flags;
1719
1720 if (ldpd_process == PROC_LDP_ENGINE) {
1721 nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr);
1722 if (nbr && nbrp_changed) {
1723 session_shutdown(nbr, S_SHUTDOWN, 0, 0);
eac6e3f0 1724#ifdef __OpenBSD__
8429abe0 1725 pfkey_remove(nbr);
0f7b5df9 1726 nbr->auth.method = nbrp->auth.method;
8429abe0
RW		 1727 if (pfkey_establish(nbr, nbrp) == -1)
1728 fatalx("pfkey setup failed");
eac6e3f0 1729#else
0f7b5df9 1730 nbr->auth.method = nbrp->auth.method;
eac6e3f0
RW		 1731 sock_set_md5sig((ldp_af_global_get(&global,
1732 nbr->af))->ldp_session_socket, nbr->af,
1733 &nbr->raddr, nbrp->auth.md5key);
1734#endif
8429abe0
RW		 1735 if (nbr_session_active_role(nbr))
1736 nbr_establish_connection(nbr);
1737 }
1738 }
8429abe0
RW		 1739 }
1740}
1741
1742static void
56b8a8d2 1743merge_l2vpns(struct ldpd_conf *conf, struct ldpd_conf *xconf)
8429abe0
RW		 1744{
1745 struct l2vpn *l2vpn, *ltmp, *xl;
1746
90d7e7bd 1747 RB_FOREACH_SAFE(l2vpn, l2vpn_head, &conf->l2vpn_tree, ltmp) {
8429abe0 1748 /* find deleted l2vpns */
f67de3ee 1749 if (l2vpn_find(xconf, l2vpn->name) == NULL) {
8429abe0
RW		 1750 switch (ldpd_process) {
1751 case PROC_LDE_ENGINE:
1752 l2vpn_exit(l2vpn);
1753 break;
1754 case PROC_LDP_ENGINE:
1755 ldpe_l2vpn_exit(l2vpn);
1756 break;
1757 case PROC_MAIN:
1758 break;
1759 }
1d75a89d 1760 RB_REMOVE(l2vpn_head, &conf->l2vpn_tree, l2vpn);
8429abe0
RW		 1761 l2vpn_del(l2vpn);
1762 }
1763 }
90d7e7bd 1764 RB_FOREACH_SAFE(xl, l2vpn_head, &xconf->l2vpn_tree, ltmp) {
8429abe0
RW		 1765 /* find new l2vpns */
1766 if ((l2vpn = l2vpn_find(conf, xl->name)) == NULL) {
1d75a89d
RW		 1767 COPY(l2vpn, xl);
1768 RB_INSERT(l2vpn_head, &conf->l2vpn_tree, l2vpn);
45926e58
RZ		 1769 RB_INIT(l2vpn_if_head, &l2vpn->if_tree);
1770 RB_INIT(l2vpn_pw_head, &l2vpn->pw_tree);
1771 RB_INIT(l2vpn_pw_head, &l2vpn->pw_inactive_tree);
8429abe0
RW		 1772
1773 switch (ldpd_process) {
1774 case PROC_LDE_ENGINE:
1d75a89d 1775 l2vpn_init(l2vpn);
8429abe0
RW		 1776 break;
1777 case PROC_LDP_ENGINE:
1d75a89d 1778 ldpe_l2vpn_init(l2vpn);
8429abe0
RW		 1779 break;
1780 case PROC_MAIN:
1781 break;
1782 }
8429abe0
RW		 1783 }
1784
1785 /* update existing l2vpns */
56b8a8d2 1786 merge_l2vpn(conf, l2vpn, xl);
8429abe0
RW		 1787 }
1788}
1789
1790static void
56b8a8d2 1791merge_l2vpn(struct ldpd_conf *xconf, struct l2vpn *l2vpn, struct l2vpn *xl)
8429abe0
RW		 1792{
1793 struct l2vpn_if *lif, *ftmp, *xf;
1794 struct l2vpn_pw *pw, *ptmp, *xp;
1795 struct nbr *nbr;
1796 int reset_nbr, reinstall_pwfec, reinstall_tnbr;
1797 int previous_pw_type, previous_mtu;
1798
1799 previous_pw_type = l2vpn->pw_type;
1800 previous_mtu = l2vpn->mtu;
1801
1802 /* merge intefaces */
029c1958 1803 RB_FOREACH_SAFE(lif, l2vpn_if_head, &l2vpn->if_tree, ftmp) {
8429abe0 1804 /* find deleted interfaces */
f67de3ee 1805 if (l2vpn_if_find(xl, lif->ifname) == NULL) {
029c1958 1806 RB_REMOVE(l2vpn_if_head, &l2vpn->if_tree, lif);
8429abe0
RW		 1807 free(lif);
1808 }
1809 }
029c1958 1810 RB_FOREACH_SAFE(xf, l2vpn_if_head, &xl->if_tree, ftmp) {
8429abe0 1811 /* find new interfaces */
865c8d5c 1812 if (l2vpn_if_find(l2vpn, xf->ifname) == NULL) {
1d75a89d
RW		 1813 COPY(lif, xf);
1814 RB_INSERT(l2vpn_if_head, &l2vpn->if_tree, lif);
1815 lif->l2vpn = l2vpn;
1816
1817 switch (ldpd_process) {
1818 case PROC_LDP_ENGINE:
1819 case PROC_LDE_ENGINE:
1820 break;
1821 case PROC_MAIN:
1822 kif_redistribute(lif->ifname);
1823 break;
52b530fc 1824 }
8429abe0 1825 }
8429abe0
RW		 1826 }
1827
eac6e3f0 1828 /* merge active pseudowires */
20bacaeb 1829 RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_tree, ptmp) {
eac6e3f0 1830 /* find deleted active pseudowires */
f67de3ee 1831 if (l2vpn_pw_find_active(xl, pw->ifname) == NULL) {
8429abe0
RW		 1832 switch (ldpd_process) {
1833 case PROC_LDE_ENGINE:
1834 l2vpn_pw_exit(pw);
1835 break;
1836 case PROC_LDP_ENGINE:
1837 ldpe_l2vpn_pw_exit(pw);
1838 break;
1839 case PROC_MAIN:
1840 break;
1841 }
1842
20bacaeb 1843 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw);
8429abe0
RW		 1844 free(pw);
1845 }
1846 }
20bacaeb 1847 RB_FOREACH_SAFE(xp, l2vpn_pw_head, &xl->pw_tree, ptmp) {
eac6e3f0 1848 /* find new active pseudowires */
5c3f00af 1849 if ((pw = l2vpn_pw_find_active(l2vpn, xp->ifname)) == NULL) {
1d75a89d
RW		 1850 COPY(pw, xp);
1851 RB_INSERT(l2vpn_pw_head, &l2vpn->pw_tree, pw);
1852 pw->l2vpn = l2vpn;
8429abe0
RW		 1853
1854 switch (ldpd_process) {
1855 case PROC_LDE_ENGINE:
1d75a89d 1856 l2vpn_pw_init(pw);
8429abe0
RW		 1857 break;
1858 case PROC_LDP_ENGINE:
1d75a89d 1859 ldpe_l2vpn_pw_init(pw);
8429abe0
RW		 1860 break;
1861 case PROC_MAIN:
1d75a89d 1862 kif_redistribute(pw->ifname);
8429abe0
RW		 1863 break;
1864 }
1865 continue;
1866 }
1867
eac6e3f0 1868 /* update existing active pseudowire */
8429abe0
RW		 1869 if (pw->af != xp->af ||
1870 ldp_addrcmp(pw->af, &pw->addr, &xp->addr))
1871 reinstall_tnbr = 1;
1872 else
1873 reinstall_tnbr = 0;
1874
1875 /* changes that require a session restart */
1876 if ((pw->flags & (F_PW_STATUSTLV_CONF|F_PW_CWORD_CONF)) !=
1877 (xp->flags & (F_PW_STATUSTLV_CONF|F_PW_CWORD_CONF)))
1878 reset_nbr = 1;
1879 else
1880 reset_nbr = 0;
1881
1882 if (l2vpn->pw_type != xl->pw_type || l2vpn->mtu != xl->mtu ||
1883 pw->pwid != xp->pwid || reinstall_tnbr || reset_nbr ||
1884 pw->lsr_id.s_addr != xp->lsr_id.s_addr)
1885 reinstall_pwfec = 1;
1886 else
1887 reinstall_pwfec = 0;
1888
1889 if (ldpd_process == PROC_LDP_ENGINE) {
1890 if (reinstall_tnbr)
1891 ldpe_l2vpn_pw_exit(pw);
1892 if (reset_nbr) {
1893 nbr = nbr_find_ldpid(pw->lsr_id.s_addr);
1894 if (nbr && nbr->state == NBR_STA_OPER)
1895 session_shutdown(nbr, S_SHUTDOWN, 0, 0);
1896 }
1897 }
be0fbdeb 1898 if (ldpd_process == PROC_LDE_ENGINE && reinstall_pwfec)
8429abe0
RW		 1899 l2vpn_pw_exit(pw);
1900 pw->lsr_id = xp->lsr_id;
1901 pw->af = xp->af;
1902 pw->addr = xp->addr;
1903 pw->pwid = xp->pwid;
1904 strlcpy(pw->ifname, xp->ifname, sizeof(pw->ifname));
1905 pw->ifindex = xp->ifindex;
1906 if (xp->flags & F_PW_CWORD_CONF)
1907 pw->flags |= F_PW_CWORD_CONF;
1908 else
1909 pw->flags &= ~F_PW_CWORD_CONF;
1910 if (xp->flags & F_PW_STATUSTLV_CONF)
1911 pw->flags |= F_PW_STATUSTLV_CONF;
1912 else
1913 pw->flags &= ~F_PW_STATUSTLV_CONF;
eac6e3f0
RW		 1914 if (xp->flags & F_PW_STATIC_NBR_ADDR)
1915 pw->flags |= F_PW_STATIC_NBR_ADDR;
1916 else
1917 pw->flags &= ~F_PW_STATIC_NBR_ADDR;
8429abe0
RW		 1918 if (ldpd_process == PROC_LDP_ENGINE && reinstall_tnbr)
1919 ldpe_l2vpn_pw_init(pw);
be0fbdeb 1920 if (ldpd_process == PROC_LDE_ENGINE && reinstall_pwfec) {
8429abe0
RW		 1921 l2vpn->pw_type = xl->pw_type;
1922 l2vpn->mtu = xl->mtu;
1923 l2vpn_pw_init(pw);
1924 l2vpn->pw_type = previous_pw_type;
1925 l2vpn->mtu = previous_mtu;
1926 }
8429abe0
RW		 1927 }
1928
eac6e3f0 1929 /* merge inactive pseudowires */
20bacaeb 1930 RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree, ptmp) {
eac6e3f0 1931 /* find deleted inactive pseudowires */
f67de3ee 1932 if (l2vpn_pw_find_inactive(xl, pw->ifname) == NULL) {
20bacaeb 1933 RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
eac6e3f0
RW		 1934 free(pw);
1935 }
1936 }
20bacaeb 1937 RB_FOREACH_SAFE(xp, l2vpn_pw_head, &xl->pw_inactive_tree, ptmp) {
eac6e3f0 1938 /* find new inactive pseudowires */
5c3f00af 1939 if ((pw = l2vpn_pw_find_inactive(l2vpn, xp->ifname)) == NULL) {
1d75a89d
RW		 1940 COPY(pw, xp);
1941 RB_INSERT(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw);
1942 pw->l2vpn = l2vpn;
1943
1944 switch (ldpd_process) {
1945 case PROC_LDE_ENGINE:
1946 case PROC_LDP_ENGINE:
1947 break;
1948 case PROC_MAIN:
1949 kif_redistribute(pw->ifname);
1950 break;
52b530fc 1951 }
eac6e3f0
RW		 1952 continue;
1953 }
1954
1955 /* update existing inactive pseudowire */
1956 pw->lsr_id.s_addr = xp->lsr_id.s_addr;
1957 pw->af = xp->af;
1958 pw->addr = xp->addr;
1959 pw->pwid = xp->pwid;
1960 strlcpy(pw->ifname, xp->ifname, sizeof(pw->ifname));
1961 pw->ifindex = xp->ifindex;
1962 pw->flags = xp->flags;
eac6e3f0 1963 }
eac6e3f0 1964
8429abe0
RW		 1965 l2vpn->pw_type = xl->pw_type;
1966 l2vpn->mtu = xl->mtu;
1967 strlcpy(l2vpn->br_ifname, xl->br_ifname, sizeof(l2vpn->br_ifname));
1968 l2vpn->br_ifindex = xl->br_ifindex;
1969}
1970
1971struct ldpd_conf *
1972config_new_empty(void)
1973{
1974 struct ldpd_conf *xconf;
1975
1976 xconf = calloc(1, sizeof(*xconf));
1977 if (xconf == NULL)
1978 fatal(NULL);
1979
45926e58
RZ		 1980 RB_INIT(iface_head, &xconf->iface_tree);
1981 RB_INIT(tnbr_head, &xconf->tnbr_tree);
1982 RB_INIT(nbrp_head, &xconf->nbrp_tree);
1983 RB_INIT(l2vpn_head, &xconf->l2vpn_tree);
8429abe0 1984
e4a82008
RW		 1985 /* set default values */
1986 ldp_config_reset(xconf);
1987
8429abe0
RW		 1988 return (xconf);
1989}
1990
1991void
1992config_clear(struct ldpd_conf *conf)
1993{
1994 struct ldpd_conf *xconf;
1995
1996 /*
1997 * Merge current config with an empty config, this will deactivate
1998 * and deallocate all the interfaces, pseudowires and so on. Before
1999 * merging, copy the router-id and other variables to avoid some
2000 * unnecessary operations, like trying to reset the neighborships.
2001 */
2002 xconf = config_new_empty();
2003 xconf->ipv4 = conf->ipv4;
2004 xconf->ipv6 = conf->ipv6;
2005 xconf->rtr_id = conf->rtr_id;
2006 xconf->trans_pref = conf->trans_pref;
2007 xconf->flags = conf->flags;
2008 merge_config(conf, xconf);
1d75a89d 2009 free(xconf);
8429abe0
RW		 2010 free(conf);
2011}
FRRouting mirror