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Commit | Line | Data |
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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" |
eac6e3f0 RW |
45 | |
46 | static void ldpd_shutdown(void); | |
28e8294c | 47 | static pid_t start_child(enum ldpd_process, char *, int, int, |
fea12efb | 48 | const char *, const char *, const char *, const char *); |
eac6e3f0 RW |
49 | static int main_dispatch_ldpe(struct thread *); |
50 | static int main_dispatch_lde(struct thread *); | |
8429abe0 RW |
51 | static int main_imsg_send_ipc_sockets(struct imsgbuf *, |
52 | struct imsgbuf *); | |
53 | static void main_imsg_send_net_sockets(int); | |
54 | static void main_imsg_send_net_socket(int, enum socket_type); | |
55 | static int main_imsg_send_config(struct ldpd_conf *); | |
56b8a8d2 RW |
56 | static void ldp_config_normalize(struct ldpd_conf *); |
57 | static void ldp_config_reset_main(struct ldpd_conf *); | |
58 | static void ldp_config_reset_af(struct ldpd_conf *, int); | |
1d75a89d | 59 | static void ldp_config_reset_l2vpns(struct ldpd_conf *); |
8429abe0 RW |
60 | static void merge_global(struct ldpd_conf *, struct ldpd_conf *); |
61 | static void merge_af(int, struct ldpd_af_conf *, | |
62 | struct ldpd_af_conf *); | |
56b8a8d2 | 63 | static void merge_ifaces(struct ldpd_conf *, struct ldpd_conf *); |
8429abe0 | 64 | static void merge_iface_af(struct iface_af *, struct iface_af *); |
56b8a8d2 RW |
65 | static void merge_tnbrs(struct ldpd_conf *, struct ldpd_conf *); |
66 | static void merge_nbrps(struct ldpd_conf *, struct ldpd_conf *); | |
67 | static void merge_l2vpns(struct ldpd_conf *, struct ldpd_conf *); | |
8429abe0 | 68 | static void merge_l2vpn(struct ldpd_conf *, struct l2vpn *, |
56b8a8d2 | 69 | struct l2vpn *); |
8429abe0 | 70 | |
4af8997d RW |
71 | DEFINE_QOBJ_TYPE(iface) |
72 | DEFINE_QOBJ_TYPE(tnbr) | |
73 | DEFINE_QOBJ_TYPE(nbr_params) | |
74 | DEFINE_QOBJ_TYPE(l2vpn_if) | |
75 | DEFINE_QOBJ_TYPE(l2vpn_pw) | |
76 | DEFINE_QOBJ_TYPE(l2vpn) | |
77 | DEFINE_QOBJ_TYPE(ldpd_conf) | |
78 | ||
8429abe0 | 79 | struct ldpd_global global; |
56b8a8d2 | 80 | struct ldpd_conf *ldpd_conf, *vty_conf; |
8429abe0 | 81 | |
28e8294c RW |
82 | static struct imsgev *iev_ldpe, *iev_ldpe_sync; |
83 | static struct imsgev *iev_lde, *iev_lde_sync; | |
8429abe0 RW |
84 | static pid_t ldpe_pid; |
85 | static pid_t lde_pid; | |
86 | ||
eac6e3f0 RW |
87 | #define LDP_DEFAULT_CONFIG "ldpd.conf" |
88 | #define LDP_VTY_PORT 2612 | |
89 | ||
90 | /* Master of threads. */ | |
91 | struct thread_master *master; | |
92 | ||
dbce3582 RW |
93 | static struct frr_daemon_info ldpd_di; |
94 | ||
eac6e3f0 RW |
95 | /* ldpd privileges */ |
96 | static zebra_capabilities_t _caps_p [] = | |
8429abe0 | 97 | { |
eac6e3f0 RW |
98 | ZCAP_BIND, |
99 | ZCAP_NET_ADMIN | |
100 | }; | |
101 | ||
102 | struct zebra_privs_t ldpd_privs = | |
103 | { | |
b2f36157 DL |
104 | #if defined(FRR_USER) && defined(FRR_GROUP) |
105 | .user = FRR_USER, | |
106 | .group = FRR_GROUP, | |
eac6e3f0 RW |
107 | #endif |
108 | #if defined(VTY_GROUP) | |
109 | .vty_group = VTY_GROUP, | |
110 | #endif | |
111 | .caps_p = _caps_p, | |
112 | .cap_num_p = array_size(_caps_p), | |
113 | .cap_num_i = 0 | |
114 | }; | |
115 | ||
372b8bd3 RW |
116 | /* CTL Socket path */ |
117 | char ctl_sock_path[MAXPATHLEN] = LDPD_SOCKET; | |
118 | ||
eac6e3f0 | 119 | /* LDPd options. */ |
372b8bd3 | 120 | #define OPTION_CTLSOCK 1001 |
eac6e3f0 RW |
121 | static struct option longopts[] = |
122 | { | |
372b8bd3 | 123 | { "ctl_socket", required_argument, NULL, OPTION_CTLSOCK}, |
fea12efb | 124 | { "instance", required_argument, NULL, 'n'}, |
eac6e3f0 RW |
125 | { 0 } |
126 | }; | |
127 | ||
eac6e3f0 RW |
128 | /* SIGHUP handler. */ |
129 | static void | |
130 | sighup(void) | |
131 | { | |
132 | log_info("SIGHUP received"); | |
dbce3582 RW |
133 | |
134 | /* reset vty_conf */ | |
dbce3582 | 135 | ldp_config_reset_main(vty_conf); |
1d75a89d | 136 | ldp_config_reset_l2vpns(vty_conf); |
dbce3582 RW |
137 | |
138 | /* read configuration file without applying any changes */ | |
139 | global.sighup = 1; | |
140 | vty_read_config(ldpd_di.config_file, config_default); | |
141 | global.sighup = 0; | |
142 | ||
143 | /* | |
144 | * Apply the new configuration all at once, this way merge_config() | |
145 | * will be the least disruptive as possible. | |
146 | */ | |
147 | ldp_reload(vty_conf); | |
eac6e3f0 RW |
148 | } |
149 | ||
150 | /* SIGINT / SIGTERM handler. */ | |
151 | static void | |
152 | sigint(void) | |
8429abe0 | 153 | { |
eac6e3f0 RW |
154 | log_info("SIGINT received"); |
155 | ldpd_shutdown(); | |
156 | } | |
8429abe0 | 157 | |
eac6e3f0 RW |
158 | /* SIGUSR1 handler. */ |
159 | static void | |
160 | sigusr1(void) | |
161 | { | |
dd8376fe | 162 | zlog_rotate(); |
8429abe0 RW |
163 | } |
164 | ||
eac6e3f0 RW |
165 | static struct quagga_signal_t ldp_signals[] = |
166 | { | |
167 | { | |
168 | .signal = SIGHUP, | |
169 | .handler = &sighup, | |
170 | }, | |
171 | { | |
172 | .signal = SIGINT, | |
173 | .handler = &sigint, | |
174 | }, | |
175 | { | |
176 | .signal = SIGTERM, | |
177 | .handler = &sigint, | |
178 | }, | |
179 | { | |
180 | .signal = SIGUSR1, | |
181 | .handler = &sigusr1, | |
182 | } | |
183 | }; | |
184 | ||
4f04a76b DL |
185 | FRR_DAEMON_INFO(ldpd, LDP, |
186 | .vty_port = LDP_VTY_PORT, | |
187 | ||
188 | .proghelp = "Implementation of the LDP protocol.", | |
189 | ||
190 | .signals = ldp_signals, | |
191 | .n_signals = array_size(ldp_signals), | |
192 | ||
193 | .privs = &ldpd_privs, | |
194 | ) | |
195 | ||
8429abe0 RW |
196 | int |
197 | main(int argc, char *argv[]) | |
198 | { | |
8429abe0 | 199 | char *saved_argv0; |
eac6e3f0 | 200 | int lflag = 0, eflag = 0; |
28e8294c RW |
201 | int pipe_parent2ldpe[2], pipe_parent2ldpe_sync[2]; |
202 | int pipe_parent2lde[2], pipe_parent2lde_sync[2]; | |
372b8bd3 RW |
203 | char *ctl_sock_custom_path = NULL; |
204 | char *ctl_sock_name; | |
eac6e3f0 RW |
205 | const char *user = NULL; |
206 | const char *group = NULL; | |
fea12efb | 207 | u_short instance = 0; |
208 | const char *instance_char = NULL; | |
8429abe0 | 209 | |
8429abe0 | 210 | ldpd_process = PROC_MAIN; |
0b4d8f1e | 211 | log_procname = log_procnames[ldpd_process]; |
8429abe0 | 212 | |
8429abe0 RW |
213 | saved_argv0 = argv[0]; |
214 | if (saved_argv0 == NULL) | |
eac6e3f0 | 215 | saved_argv0 = (char *)"ldpd"; |
8429abe0 | 216 | |
4f04a76b | 217 | frr_preinit(&ldpd_di, argc, argv); |
fea12efb | 218 | frr_opt_add("LEn:", longopts, |
219 | " --ctl_socket Override ctl socket path\n" | |
220 | "-n, --instance Instance id\n"); | |
4f04a76b | 221 | |
eac6e3f0 RW |
222 | while (1) { |
223 | int opt; | |
224 | ||
4f04a76b | 225 | opt = frr_getopt(argc, argv, NULL); |
eac6e3f0 RW |
226 | |
227 | if (opt == EOF) | |
8429abe0 | 228 | break; |
eac6e3f0 RW |
229 | |
230 | switch (opt) { | |
231 | case 0: | |
232 | break; | |
372b8bd3 RW |
233 | case OPTION_CTLSOCK: |
234 | ctl_sock_name = strrchr(LDPD_SOCKET, '/'); | |
235 | if (ctl_sock_name) | |
236 | /* skip '/' */ | |
237 | ctl_sock_name++; | |
238 | else | |
239 | /* | |
240 | * LDPD_SOCKET configured as relative path | |
241 | * during config? Should really never happen for | |
242 | * sensible config | |
243 | */ | |
244 | ctl_sock_name = (char *)LDPD_SOCKET; | |
245 | ctl_sock_custom_path = optarg; | |
246 | strlcpy(ctl_sock_path, ctl_sock_custom_path, | |
247 | sizeof(ctl_sock_path)); | |
248 | strlcat(ctl_sock_path, "/", sizeof(ctl_sock_path)); | |
249 | strlcat(ctl_sock_path, ctl_sock_name, | |
250 | sizeof(ctl_sock_path)); | |
251 | break; | |
fea12efb | 252 | case 'n': |
253 | instance = atoi(optarg); | |
254 | instance_char = optarg; | |
255 | if (instance < 1) | |
256 | exit(0); | |
257 | break; | |
8429abe0 RW |
258 | case 'L': |
259 | lflag = 1; | |
260 | break; | |
261 | case 'E': | |
262 | eflag = 1; | |
263 | break; | |
264 | default: | |
4f04a76b | 265 | frr_help_exit(1); |
eac6e3f0 | 266 | break; |
8429abe0 RW |
267 | } |
268 | } | |
269 | ||
4f04a76b DL |
270 | user = ldpd_privs.user; |
271 | group = ldpd_privs.group; | |
272 | ||
8429abe0 RW |
273 | argc -= optind; |
274 | argv += optind; | |
275 | if (argc > 0 || (lflag && eflag)) | |
4f04a76b | 276 | frr_help_exit(1); |
8429abe0 | 277 | |
eac6e3f0 RW |
278 | /* check for root privileges */ |
279 | if (geteuid() != 0) { | |
280 | errno = EPERM; | |
4f04a76b | 281 | perror(ldpd_di.progname); |
8429abe0 RW |
282 | exit(1); |
283 | } | |
284 | ||
eac6e3f0 | 285 | if (lflag) |
fea12efb | 286 | lde(user, group, instance); |
eac6e3f0 | 287 | else if (eflag) |
372b8bd3 | 288 | ldpe(user, group, ctl_sock_path); |
8429abe0 | 289 | |
83139e57 RW |
290 | openzlog(ldpd_di.progname, "LDP", 0, |
291 | LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON); | |
4af8997d | 292 | |
eac6e3f0 | 293 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2ldpe) == -1) |
8429abe0 | 294 | fatal("socketpair"); |
28e8294c RW |
295 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, |
296 | pipe_parent2ldpe_sync) == -1) | |
297 | fatal("socketpair"); | |
eac6e3f0 | 298 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_parent2lde) == -1) |
8429abe0 | 299 | fatal("socketpair"); |
28e8294c RW |
300 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, |
301 | pipe_parent2lde_sync) == -1) | |
302 | fatal("socketpair"); | |
eac6e3f0 RW |
303 | sock_set_nonblock(pipe_parent2ldpe[0]); |
304 | sock_set_cloexec(pipe_parent2ldpe[0]); | |
305 | sock_set_nonblock(pipe_parent2ldpe[1]); | |
306 | sock_set_cloexec(pipe_parent2ldpe[1]); | |
28e8294c RW |
307 | sock_set_nonblock(pipe_parent2ldpe_sync[0]); |
308 | sock_set_cloexec(pipe_parent2ldpe_sync[0]); | |
309 | sock_set_cloexec(pipe_parent2ldpe_sync[1]); | |
eac6e3f0 RW |
310 | sock_set_nonblock(pipe_parent2lde[0]); |
311 | sock_set_cloexec(pipe_parent2lde[0]); | |
312 | sock_set_nonblock(pipe_parent2lde[1]); | |
313 | sock_set_cloexec(pipe_parent2lde[1]); | |
28e8294c RW |
314 | sock_set_nonblock(pipe_parent2lde_sync[0]); |
315 | sock_set_cloexec(pipe_parent2lde_sync[0]); | |
316 | sock_set_cloexec(pipe_parent2lde_sync[1]); | |
8429abe0 RW |
317 | |
318 | /* start children */ | |
319 | lde_pid = start_child(PROC_LDE_ENGINE, saved_argv0, | |
1a35e2e5 | 320 | pipe_parent2lde[1], pipe_parent2lde_sync[1], |
fea12efb | 321 | user, group, ctl_sock_custom_path, instance_char); |
8429abe0 | 322 | ldpe_pid = start_child(PROC_LDP_ENGINE, saved_argv0, |
1a35e2e5 | 323 | pipe_parent2ldpe[1], pipe_parent2ldpe_sync[1], |
fea12efb | 324 | user, group, ctl_sock_custom_path, instance_char); |
8429abe0 | 325 | |
eac6e3f0 | 326 | /* drop privileges */ |
eac6e3f0 | 327 | zprivs_init(&ldpd_privs); |
8429abe0 RW |
328 | |
329 | /* setup signal handler */ | |
eac6e3f0 RW |
330 | signal_init(master, array_size(ldp_signals), ldp_signals); |
331 | ||
83139e57 RW |
332 | /* thread master */ |
333 | master = thread_master_create(); | |
334 | ||
eac6e3f0 | 335 | /* library inits */ |
83139e57 RW |
336 | cmd_init(1); |
337 | vty_config_lockless(); | |
338 | vty_init(master); | |
339 | vrf_init(); | |
340 | access_list_init(); | |
341 | ldp_vty_init(); | |
eac6e3f0 | 342 | ldp_zebra_init(master); |
8429abe0 | 343 | |
56b8a8d2 | 344 | /* create base configuration with sane defaults */ |
83139e57 | 345 | ldpd_conf = config_new_empty(); |
56b8a8d2 | 346 | ldp_config_reset_main(ldpd_conf); |
56b8a8d2 RW |
347 | |
348 | /* | |
349 | * Create vty_conf as a duplicate of the main configuration. All | |
350 | * configuration requests (e.g. CLI) act on vty_conf and then call | |
351 | * ldp_reload() to merge the changes into ldpd_conf. | |
352 | */ | |
1d75a89d RW |
353 | vty_conf = config_new_empty(); |
354 | ldp_config_reset_main(vty_conf); | |
355 | QOBJ_REG(vty_conf, ldpd_conf); | |
56b8a8d2 RW |
356 | |
357 | /* read configuration file and daemonize */ | |
83139e57 RW |
358 | frr_config_fork(); |
359 | ||
8429abe0 | 360 | /* setup pipes to children */ |
28e8294c RW |
361 | if ((iev_ldpe = calloc(1, sizeof(struct imsgev))) == NULL || |
362 | (iev_ldpe_sync = calloc(1, sizeof(struct imsgev))) == NULL || | |
363 | (iev_lde = calloc(1, sizeof(struct imsgev))) == NULL || | |
364 | (iev_lde_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 RW |
365 | fatal(NULL); |
366 | imsg_init(&iev_ldpe->ibuf, pipe_parent2ldpe[0]); | |
eac6e3f0 RW |
367 | iev_ldpe->handler_read = main_dispatch_ldpe; |
368 | iev_ldpe->ev_read = thread_add_read(master, iev_ldpe->handler_read, | |
369 | iev_ldpe, iev_ldpe->ibuf.fd); | |
370 | iev_ldpe->handler_write = ldp_write_handler; | |
28e8294c RW |
371 | |
372 | imsg_init(&iev_ldpe_sync->ibuf, pipe_parent2ldpe_sync[0]); | |
373 | iev_ldpe_sync->handler_read = main_dispatch_ldpe; | |
374 | iev_ldpe_sync->ev_read = thread_add_read(master, | |
375 | iev_ldpe_sync->handler_read, iev_ldpe_sync, iev_ldpe_sync->ibuf.fd); | |
376 | iev_ldpe_sync->handler_write = ldp_write_handler; | |
8429abe0 | 377 | |
eac6e3f0 RW |
378 | imsg_init(&iev_lde->ibuf, pipe_parent2lde[0]); |
379 | iev_lde->handler_read = main_dispatch_lde; | |
380 | iev_lde->ev_read = thread_add_read(master, iev_lde->handler_read, | |
381 | iev_lde, iev_lde->ibuf.fd); | |
382 | iev_lde->handler_write = ldp_write_handler; | |
28e8294c RW |
383 | |
384 | imsg_init(&iev_lde_sync->ibuf, pipe_parent2lde_sync[0]); | |
385 | iev_lde_sync->handler_read = main_dispatch_lde; | |
386 | iev_lde_sync->ev_read = thread_add_read(master, | |
387 | iev_lde_sync->handler_read, iev_lde_sync, iev_lde_sync->ibuf.fd); | |
388 | iev_lde_sync->handler_write = ldp_write_handler; | |
8429abe0 RW |
389 | |
390 | if (main_imsg_send_ipc_sockets(&iev_ldpe->ibuf, &iev_lde->ibuf)) | |
391 | fatal("could not establish imsg links"); | |
eac6e3f0 RW |
392 | main_imsg_compose_both(IMSG_DEBUG_UPDATE, &ldp_debug, |
393 | sizeof(ldp_debug)); | |
8429abe0 RW |
394 | main_imsg_send_config(ldpd_conf); |
395 | ||
8429abe0 RW |
396 | if (ldpd_conf->ipv4.flags & F_LDPD_AF_ENABLED) |
397 | main_imsg_send_net_sockets(AF_INET); | |
398 | if (ldpd_conf->ipv6.flags & F_LDPD_AF_ENABLED) | |
399 | main_imsg_send_net_sockets(AF_INET6); | |
400 | ||
16077f2f | 401 | frr_run(master); |
8429abe0 | 402 | |
8429abe0 RW |
403 | /* NOTREACHED */ |
404 | return (0); | |
405 | } | |
406 | ||
eac6e3f0 | 407 | static void |
8429abe0 RW |
408 | ldpd_shutdown(void) |
409 | { | |
410 | pid_t pid; | |
411 | int status; | |
412 | ||
413 | /* close pipes */ | |
414 | msgbuf_clear(&iev_ldpe->ibuf.w); | |
415 | close(iev_ldpe->ibuf.fd); | |
416 | msgbuf_clear(&iev_lde->ibuf.w); | |
417 | close(iev_lde->ibuf.fd); | |
418 | ||
8429abe0 | 419 | config_clear(ldpd_conf); |
1d75a89d RW |
420 | |
421 | ldp_config_reset_main(vty_conf); | |
422 | ldp_config_reset_l2vpns(vty_conf); | |
423 | QOBJ_UNREG(vty_conf); | |
424 | free(vty_conf); | |
8429abe0 RW |
425 | |
426 | log_debug("waiting for children to terminate"); | |
427 | do { | |
428 | pid = wait(&status); | |
429 | if (pid == -1) { | |
430 | if (errno != EINTR && errno != ECHILD) | |
431 | fatal("wait"); | |
432 | } else if (WIFSIGNALED(status)) | |
433 | log_warnx("%s terminated; signal %d", | |
434 | (pid == lde_pid) ? "label decision engine" : | |
435 | "ldp engine", WTERMSIG(status)); | |
436 | } while (pid != -1 || (pid == -1 && errno == EINTR)); | |
437 | ||
438 | free(iev_ldpe); | |
439 | free(iev_lde); | |
440 | ||
441 | log_info("terminating"); | |
64dffe25 RW |
442 | |
443 | vrf_terminate(); | |
45a8eba9 | 444 | access_list_reset(); |
64dffe25 RW |
445 | cmd_terminate(); |
446 | vty_terminate(); | |
447 | ldp_zebra_destroy(); | |
448 | zprivs_terminate(&ldpd_privs); | |
449 | thread_master_free(master); | |
bf1013e6 | 450 | closezlog(); |
64dffe25 | 451 | |
8429abe0 RW |
452 | exit(0); |
453 | } | |
454 | ||
455 | static pid_t | |
28e8294c | 456 | start_child(enum ldpd_process p, char *argv0, int fd_async, int fd_sync, |
fea12efb | 457 | const char *user, const char *group, const char *ctl_sock_custom_path, |
458 | const char *instance) | |
8429abe0 | 459 | { |
fea12efb | 460 | char *argv[13]; |
8429abe0 RW |
461 | int argc = 0; |
462 | pid_t pid; | |
463 | ||
464 | switch (pid = fork()) { | |
465 | case -1: | |
466 | fatal("cannot fork"); | |
467 | case 0: | |
468 | break; | |
469 | default: | |
28e8294c RW |
470 | close(fd_async); |
471 | close(fd_sync); | |
8429abe0 RW |
472 | return (pid); |
473 | } | |
474 | ||
28e8294c RW |
475 | if (dup2(fd_async, LDPD_FD_ASYNC) == -1) |
476 | fatal("cannot setup imsg async fd"); | |
477 | if (dup2(fd_sync, LDPD_FD_SYNC) == -1) | |
478 | fatal("cannot setup imsg sync fd"); | |
8429abe0 RW |
479 | |
480 | argv[argc++] = argv0; | |
481 | switch (p) { | |
482 | case PROC_MAIN: | |
483 | fatalx("Can not start main process"); | |
484 | case PROC_LDE_ENGINE: | |
eac6e3f0 | 485 | argv[argc++] = (char *)"-L"; |
8429abe0 RW |
486 | break; |
487 | case PROC_LDP_ENGINE: | |
eac6e3f0 | 488 | argv[argc++] = (char *)"-E"; |
8429abe0 RW |
489 | break; |
490 | } | |
eac6e3f0 RW |
491 | if (user) { |
492 | argv[argc++] = (char *)"-u"; | |
493 | argv[argc++] = (char *)user; | |
494 | } | |
495 | if (group) { | |
496 | argv[argc++] = (char *)"-g"; | |
497 | argv[argc++] = (char *)group; | |
498 | } | |
372b8bd3 RW |
499 | if (ctl_sock_custom_path) { |
500 | argv[argc++] = (char *)"--ctl_socket"; | |
501 | argv[argc++] = (char *)ctl_sock_custom_path; | |
502 | } | |
fea12efb | 503 | /* zclient serv path */ |
2a3886ac HWC |
504 | #ifdef HAVE_TCP_ZEBRA |
505 | #else | |
fea12efb | 506 | argv[argc++] = (char *)"-z"; |
507 | argv[argc++] = (char *)zclient_serv_path_get(); | |
2a3886ac | 508 | #endif |
fea12efb | 509 | /* instance */ |
510 | if (instance) { | |
511 | argv[argc++] = (char *)"-n"; | |
512 | argv[argc++] = (char *)instance; | |
513 | } | |
8429abe0 RW |
514 | argv[argc++] = NULL; |
515 | ||
516 | execvp(argv0, argv); | |
517 | fatal("execvp"); | |
518 | } | |
519 | ||
520 | /* imsg handling */ | |
521 | /* ARGSUSED */ | |
eac6e3f0 RW |
522 | static int |
523 | main_dispatch_ldpe(struct thread *thread) | |
8429abe0 | 524 | { |
eac6e3f0 | 525 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
526 | struct imsgbuf *ibuf = &iev->ibuf; |
527 | struct imsg imsg; | |
528 | int af; | |
529 | ssize_t n; | |
eac6e3f0 | 530 | int shut = 0; |
8429abe0 | 531 | |
eac6e3f0 RW |
532 | iev->ev_read = NULL; |
533 | ||
534 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
535 | fatal("imsg_read error"); | |
536 | if (n == 0) /* connection closed */ | |
537 | shut = 1; | |
8429abe0 RW |
538 | |
539 | for (;;) { | |
540 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
541 | fatal("imsg_get"); | |
542 | ||
543 | if (n == 0) | |
544 | break; | |
545 | ||
546 | switch (imsg.hdr.type) { | |
eac6e3f0 RW |
547 | case IMSG_LOG: |
548 | logit(imsg.hdr.pid, "%s", (const char *)imsg.data); | |
549 | break; | |
8429abe0 RW |
550 | case IMSG_REQUEST_SOCKETS: |
551 | af = imsg.hdr.pid; | |
552 | main_imsg_send_net_sockets(af); | |
553 | break; | |
45a8eba9 RW |
554 | case IMSG_ACL_CHECK: |
555 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
556 | sizeof(struct acl_check)) | |
557 | fatalx("IMSG_ACL_CHECK imsg with wrong len"); | |
558 | ldp_acl_reply(iev, (struct acl_check *)imsg.data); | |
559 | break; | |
8429abe0 RW |
560 | default: |
561 | log_debug("%s: error handling imsg %d", __func__, | |
562 | imsg.hdr.type); | |
563 | break; | |
564 | } | |
565 | imsg_free(&imsg); | |
566 | } | |
567 | if (!shut) | |
568 | imsg_event_add(iev); | |
569 | else { | |
eac6e3f0 RW |
570 | /* this pipe is dead, so remove the event handlers and exit */ |
571 | THREAD_READ_OFF(iev->ev_read); | |
572 | THREAD_WRITE_OFF(iev->ev_write); | |
573 | ldpe_pid = 0; | |
574 | if (lde_pid == 0) | |
575 | ldpd_shutdown(); | |
576 | else | |
577 | kill(lde_pid, SIGTERM); | |
8429abe0 | 578 | } |
eac6e3f0 RW |
579 | |
580 | return (0); | |
8429abe0 RW |
581 | } |
582 | ||
583 | /* ARGSUSED */ | |
eac6e3f0 RW |
584 | static int |
585 | main_dispatch_lde(struct thread *thread) | |
8429abe0 | 586 | { |
eac6e3f0 | 587 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
588 | struct imsgbuf *ibuf = &iev->ibuf; |
589 | struct imsg imsg; | |
590 | ssize_t n; | |
591 | int shut = 0; | |
592 | ||
eac6e3f0 RW |
593 | iev->ev_read = NULL; |
594 | ||
595 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
596 | fatal("imsg_read error"); | |
597 | if (n == 0) /* connection closed */ | |
598 | shut = 1; | |
8429abe0 RW |
599 | |
600 | for (;;) { | |
601 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
602 | fatal("imsg_get"); | |
603 | ||
604 | if (n == 0) | |
605 | break; | |
606 | ||
607 | switch (imsg.hdr.type) { | |
eac6e3f0 RW |
608 | case IMSG_LOG: |
609 | logit(imsg.hdr.pid, "%s", (const char *)imsg.data); | |
610 | break; | |
8429abe0 RW |
611 | case IMSG_KLABEL_CHANGE: |
612 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
613 | sizeof(struct kroute)) | |
614 | fatalx("invalid size of IMSG_KLABEL_CHANGE"); | |
615 | if (kr_change(imsg.data)) | |
616 | log_warnx("%s: error changing route", __func__); | |
617 | break; | |
618 | case IMSG_KLABEL_DELETE: | |
619 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
620 | sizeof(struct kroute)) | |
621 | fatalx("invalid size of IMSG_KLABEL_DELETE"); | |
622 | if (kr_delete(imsg.data)) | |
623 | log_warnx("%s: error deleting route", __func__); | |
624 | break; | |
625 | case IMSG_KPWLABEL_CHANGE: | |
626 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
627 | sizeof(struct kpw)) | |
628 | fatalx("invalid size of IMSG_KPWLABEL_CHANGE"); | |
629 | if (kmpw_set(imsg.data)) | |
630 | log_warnx("%s: error changing pseudowire", | |
631 | __func__); | |
632 | break; | |
633 | case IMSG_KPWLABEL_DELETE: | |
634 | if (imsg.hdr.len - IMSG_HEADER_SIZE != | |
635 | sizeof(struct kpw)) | |
636 | fatalx("invalid size of IMSG_KPWLABEL_DELETE"); | |
637 | if (kmpw_unset(imsg.data)) | |
638 | log_warnx("%s: error unsetting pseudowire", | |
639 | __func__); | |
640 | break; | |
45a8eba9 RW |
641 | case IMSG_ACL_CHECK: |
642 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
643 | sizeof(struct acl_check)) | |
644 | fatalx("IMSG_ACL_CHECK imsg with wrong len"); | |
645 | ldp_acl_reply(iev, (struct acl_check *)imsg.data); | |
646 | break; | |
8429abe0 RW |
647 | default: |
648 | log_debug("%s: error handling imsg %d", __func__, | |
649 | imsg.hdr.type); | |
650 | break; | |
651 | } | |
652 | imsg_free(&imsg); | |
653 | } | |
654 | if (!shut) | |
655 | imsg_event_add(iev); | |
656 | else { | |
eac6e3f0 RW |
657 | /* this pipe is dead, so remove the event handlers and exit */ |
658 | THREAD_READ_OFF(iev->ev_read); | |
659 | THREAD_WRITE_OFF(iev->ev_write); | |
660 | lde_pid = 0; | |
661 | if (ldpe_pid == 0) | |
662 | ldpd_shutdown(); | |
663 | else | |
664 | kill(ldpe_pid, SIGTERM); | |
8429abe0 | 665 | } |
eac6e3f0 RW |
666 | |
667 | return (0); | |
668 | } | |
669 | ||
670 | /* ARGSUSED */ | |
671 | int | |
672 | ldp_write_handler(struct thread *thread) | |
673 | { | |
674 | struct imsgev *iev = THREAD_ARG(thread); | |
675 | struct imsgbuf *ibuf = &iev->ibuf; | |
676 | ssize_t n; | |
677 | ||
678 | iev->ev_write = NULL; | |
679 | ||
680 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN) | |
681 | fatal("msgbuf_write"); | |
682 | if (n == 0) { | |
683 | /* this pipe is dead, so remove the event handlers */ | |
684 | THREAD_READ_OFF(iev->ev_read); | |
685 | THREAD_WRITE_OFF(iev->ev_write); | |
686 | return (0); | |
687 | } | |
688 | ||
689 | imsg_event_add(iev); | |
690 | ||
691 | return (0); | |
8429abe0 RW |
692 | } |
693 | ||
694 | void | |
695 | main_imsg_compose_ldpe(int type, pid_t pid, void *data, uint16_t datalen) | |
696 | { | |
697 | if (iev_ldpe == NULL) | |
698 | return; | |
699 | imsg_compose_event(iev_ldpe, type, 0, pid, -1, data, datalen); | |
700 | } | |
701 | ||
702 | void | |
703 | main_imsg_compose_lde(int type, pid_t pid, void *data, uint16_t datalen) | |
704 | { | |
705 | imsg_compose_event(iev_lde, type, 0, pid, -1, data, datalen); | |
706 | } | |
707 | ||
eac6e3f0 | 708 | int |
8429abe0 RW |
709 | main_imsg_compose_both(enum imsg_type type, void *buf, uint16_t len) |
710 | { | |
eac6e3f0 RW |
711 | if (iev_ldpe == NULL || iev_lde == NULL) |
712 | return (0); | |
8429abe0 RW |
713 | if (imsg_compose_event(iev_ldpe, type, 0, 0, -1, buf, len) == -1) |
714 | return (-1); | |
715 | if (imsg_compose_event(iev_lde, type, 0, 0, -1, buf, len) == -1) | |
716 | return (-1); | |
717 | return (0); | |
718 | } | |
719 | ||
720 | void | |
721 | imsg_event_add(struct imsgev *iev) | |
722 | { | |
28e8294c RW |
723 | if (iev->handler_read) |
724 | THREAD_READ_ON(master, iev->ev_read, iev->handler_read, iev, | |
725 | iev->ibuf.fd); | |
8429abe0 | 726 | |
28e8294c | 727 | if (iev->handler_write && iev->ibuf.w.queued) |
eac6e3f0 RW |
728 | THREAD_WRITE_ON(master, iev->ev_write, iev->handler_write, iev, |
729 | iev->ibuf.fd); | |
8429abe0 RW |
730 | } |
731 | ||
732 | int | |
733 | imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid, | |
734 | pid_t pid, int fd, void *data, uint16_t datalen) | |
735 | { | |
736 | int ret; | |
737 | ||
738 | if ((ret = imsg_compose(&iev->ibuf, type, peerid, | |
739 | pid, fd, data, datalen)) != -1) | |
740 | imsg_event_add(iev); | |
741 | return (ret); | |
742 | } | |
743 | ||
744 | void | |
745 | evbuf_enqueue(struct evbuf *eb, struct ibuf *buf) | |
746 | { | |
747 | ibuf_close(&eb->wbuf, buf); | |
748 | evbuf_event_add(eb); | |
749 | } | |
750 | ||
751 | void | |
752 | evbuf_event_add(struct evbuf *eb) | |
753 | { | |
754 | if (eb->wbuf.queued) | |
eac6e3f0 RW |
755 | THREAD_WRITE_ON(master, eb->ev, eb->handler, eb->arg, |
756 | eb->wbuf.fd); | |
8429abe0 RW |
757 | } |
758 | ||
759 | void | |
eac6e3f0 | 760 | evbuf_init(struct evbuf *eb, int fd, int (*handler)(struct thread *), |
8429abe0 RW |
761 | void *arg) |
762 | { | |
763 | msgbuf_init(&eb->wbuf); | |
764 | eb->wbuf.fd = fd; | |
eac6e3f0 RW |
765 | eb->handler = handler; |
766 | eb->arg = arg; | |
8429abe0 RW |
767 | } |
768 | ||
769 | void | |
770 | evbuf_clear(struct evbuf *eb) | |
771 | { | |
eac6e3f0 | 772 | THREAD_WRITE_OFF(eb->ev); |
8429abe0 RW |
773 | msgbuf_clear(&eb->wbuf); |
774 | eb->wbuf.fd = -1; | |
775 | } | |
776 | ||
777 | static int | |
778 | main_imsg_send_ipc_sockets(struct imsgbuf *ldpe_buf, struct imsgbuf *lde_buf) | |
779 | { | |
780 | int pipe_ldpe2lde[2]; | |
781 | ||
eac6e3f0 | 782 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_ldpe2lde) == -1) |
8429abe0 | 783 | return (-1); |
eac6e3f0 RW |
784 | sock_set_nonblock(pipe_ldpe2lde[0]); |
785 | sock_set_nonblock(pipe_ldpe2lde[1]); | |
8429abe0 RW |
786 | |
787 | if (imsg_compose(ldpe_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[0], | |
788 | NULL, 0) == -1) | |
789 | return (-1); | |
790 | if (imsg_compose(lde_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[1], | |
791 | NULL, 0) == -1) | |
792 | return (-1); | |
793 | ||
794 | return (0); | |
795 | } | |
796 | ||
797 | static void | |
798 | main_imsg_send_net_sockets(int af) | |
799 | { | |
eac6e3f0 RW |
800 | if (!ldp_addrisset(af, &(ldp_af_conf_get(ldpd_conf, af))->trans_addr)) |
801 | return; | |
802 | ||
8429abe0 RW |
803 | main_imsg_send_net_socket(af, LDP_SOCKET_DISC); |
804 | main_imsg_send_net_socket(af, LDP_SOCKET_EDISC); | |
805 | main_imsg_send_net_socket(af, LDP_SOCKET_SESSION); | |
806 | imsg_compose_event(iev_ldpe, IMSG_SETUP_SOCKETS, af, 0, -1, NULL, 0); | |
807 | } | |
808 | ||
809 | static void | |
810 | main_imsg_send_net_socket(int af, enum socket_type type) | |
811 | { | |
812 | int fd; | |
813 | ||
814 | fd = ldp_create_socket(af, type); | |
815 | if (fd == -1) { | |
816 | log_warnx("%s: failed to create %s socket for address-family " | |
817 | "%s", __func__, socket_name(type), af_name(af)); | |
818 | return; | |
819 | } | |
820 | ||
821 | imsg_compose_event(iev_ldpe, IMSG_SOCKET_NET, af, 0, fd, &type, | |
822 | sizeof(type)); | |
823 | } | |
824 | ||
45a8eba9 RW |
825 | int |
826 | ldp_acl_request(struct imsgev *iev, char *acl_name, int af, | |
827 | union ldpd_addr *addr, uint8_t prefixlen) | |
828 | { | |
829 | struct imsg imsg; | |
830 | ssize_t n; | |
831 | struct acl_check acl_check; | |
832 | ||
833 | if (acl_name[0] == '\0') | |
834 | return FILTER_PERMIT; | |
835 | ||
836 | /* build request */ | |
837 | strlcpy(acl_check.acl, acl_name, sizeof(acl_check.acl)); | |
838 | acl_check.af = af; | |
839 | acl_check.addr = *addr; | |
840 | acl_check.prefixlen = prefixlen; | |
841 | ||
842 | /* send (blocking) */ | |
843 | imsg_compose_event(iev, IMSG_ACL_CHECK, 0, 0, -1, &acl_check, | |
844 | sizeof(acl_check)); | |
845 | imsg_flush(&iev->ibuf); | |
846 | ||
847 | /* receive (blocking) and parse result */ | |
848 | if ((n = imsg_read(&iev->ibuf)) == -1) | |
849 | fatal("imsg_read error"); | |
850 | if ((n = imsg_get(&iev->ibuf, &imsg)) == -1) | |
851 | fatal("imsg_get"); | |
852 | if (imsg.hdr.type != IMSG_ACL_CHECK || | |
853 | imsg.hdr.len != IMSG_HEADER_SIZE + sizeof(int)) | |
854 | fatalx("ldp_acl_request: invalid response"); | |
855 | ||
856 | return (*((int *)imsg.data)); | |
857 | } | |
858 | ||
859 | void | |
860 | ldp_acl_reply(struct imsgev *iev, struct acl_check *acl_check) | |
861 | { | |
862 | struct access_list *alist; | |
863 | struct prefix prefix; | |
864 | int result; | |
865 | ||
866 | alist = access_list_lookup(family2afi(acl_check->af), acl_check->acl); | |
867 | if (alist == NULL) | |
868 | result = FILTER_DENY; | |
869 | else { | |
870 | prefix.family = acl_check->af; | |
871 | switch (prefix.family) { | |
872 | case AF_INET: | |
873 | prefix.u.prefix4 = acl_check->addr.v4; | |
874 | break; | |
875 | case AF_INET6: | |
876 | prefix.u.prefix6 = acl_check->addr.v6; | |
877 | break; | |
878 | default: | |
879 | fatalx("ldp_acl_reply: unknown af"); | |
880 | } | |
881 | prefix.prefixlen = acl_check->prefixlen; | |
882 | result = access_list_apply(alist, &prefix); | |
883 | } | |
884 | ||
885 | imsg_compose_event(iev, IMSG_ACL_CHECK, 0, 0, -1, &result, | |
886 | sizeof(result)); | |
887 | } | |
888 | ||
8429abe0 RW |
889 | struct ldpd_af_conf * |
890 | ldp_af_conf_get(struct ldpd_conf *xconf, int af) | |
891 | { | |
892 | switch (af) { | |
893 | case AF_INET: | |
894 | return (&xconf->ipv4); | |
895 | case AF_INET6: | |
896 | return (&xconf->ipv6); | |
897 | default: | |
898 | fatalx("ldp_af_conf_get: unknown af"); | |
899 | } | |
900 | } | |
901 | ||
902 | struct ldpd_af_global * | |
903 | ldp_af_global_get(struct ldpd_global *xglobal, int af) | |
904 | { | |
905 | switch (af) { | |
906 | case AF_INET: | |
907 | return (&xglobal->ipv4); | |
908 | case AF_INET6: | |
909 | return (&xglobal->ipv6); | |
910 | default: | |
911 | fatalx("ldp_af_global_get: unknown af"); | |
912 | } | |
913 | } | |
914 | ||
915 | int | |
916 | ldp_is_dual_stack(struct ldpd_conf *xconf) | |
917 | { | |
918 | return ((xconf->ipv4.flags & F_LDPD_AF_ENABLED) && | |
919 | (xconf->ipv6.flags & F_LDPD_AF_ENABLED)); | |
920 | } | |
921 | ||
eac6e3f0 RW |
922 | in_addr_t |
923 | ldp_rtr_id_get(struct ldpd_conf *xconf) | |
924 | { | |
925 | if (xconf->rtr_id.s_addr != INADDR_ANY) | |
926 | return (xconf->rtr_id.s_addr); | |
927 | else | |
928 | return (global.rtr_id.s_addr); | |
929 | } | |
930 | ||
8429abe0 RW |
931 | static int |
932 | main_imsg_send_config(struct ldpd_conf *xconf) | |
933 | { | |
934 | struct iface *iface; | |
935 | struct tnbr *tnbr; | |
936 | struct nbr_params *nbrp; | |
937 | struct l2vpn *l2vpn; | |
938 | struct l2vpn_if *lif; | |
939 | struct l2vpn_pw *pw; | |
940 | ||
941 | if (main_imsg_compose_both(IMSG_RECONF_CONF, xconf, | |
942 | sizeof(*xconf)) == -1) | |
943 | return (-1); | |
944 | ||
7d3d7491 | 945 | RB_FOREACH(iface, iface_head, &xconf->iface_tree) { |
8429abe0 RW |
946 | if (main_imsg_compose_both(IMSG_RECONF_IFACE, iface, |
947 | sizeof(*iface)) == -1) | |
948 | return (-1); | |
949 | } | |
950 | ||
7989cdba | 951 | RB_FOREACH(tnbr, tnbr_head, &xconf->tnbr_tree) { |
8429abe0 RW |
952 | if (main_imsg_compose_both(IMSG_RECONF_TNBR, tnbr, |
953 | sizeof(*tnbr)) == -1) | |
954 | return (-1); | |
955 | } | |
956 | ||
76c4abd1 | 957 | RB_FOREACH(nbrp, nbrp_head, &xconf->nbrp_tree) { |
8429abe0 RW |
958 | if (main_imsg_compose_both(IMSG_RECONF_NBRP, nbrp, |
959 | sizeof(*nbrp)) == -1) | |
960 | return (-1); | |
961 | } | |
962 | ||
90d7e7bd | 963 | RB_FOREACH(l2vpn, l2vpn_head, &xconf->l2vpn_tree) { |
8429abe0 RW |
964 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN, l2vpn, |
965 | sizeof(*l2vpn)) == -1) | |
966 | return (-1); | |
967 | ||
029c1958 | 968 | RB_FOREACH(lif, l2vpn_if_head, &l2vpn->if_tree) { |
8429abe0 RW |
969 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IF, lif, |
970 | sizeof(*lif)) == -1) | |
971 | return (-1); | |
972 | } | |
20bacaeb | 973 | RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_tree) { |
8429abe0 RW |
974 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN_PW, pw, |
975 | sizeof(*pw)) == -1) | |
976 | return (-1); | |
977 | } | |
20bacaeb | 978 | RB_FOREACH(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree) { |
eac6e3f0 RW |
979 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IPW, pw, |
980 | sizeof(*pw)) == -1) | |
981 | return (-1); | |
982 | } | |
8429abe0 RW |
983 | } |
984 | ||
985 | if (main_imsg_compose_both(IMSG_RECONF_END, NULL, 0) == -1) | |
986 | return (-1); | |
987 | ||
988 | return (0); | |
989 | } | |
990 | ||
eac6e3f0 | 991 | int |
56b8a8d2 | 992 | ldp_reload(struct ldpd_conf *xconf) |
8429abe0 | 993 | { |
dbce3582 RW |
994 | if (global.sighup) |
995 | return (0); | |
996 | ||
56b8a8d2 | 997 | ldp_config_normalize(xconf); |
8429abe0 RW |
998 | |
999 | if (main_imsg_send_config(xconf) == -1) | |
1000 | return (-1); | |
1001 | ||
56b8a8d2 | 1002 | merge_config(ldpd_conf, xconf); |
8429abe0 | 1003 | |
56b8a8d2 | 1004 | return (0); |
b67c140b RW |
1005 | } |
1006 | ||
eac6e3f0 | 1007 | static void |
56b8a8d2 | 1008 | ldp_config_normalize(struct ldpd_conf *xconf) |
eac6e3f0 | 1009 | { |
7d0eeac1 RW |
1010 | struct iface *iface, *itmp; |
1011 | struct nbr_params *nbrp, *ntmp; | |
eac6e3f0 | 1012 | struct l2vpn *l2vpn; |
7d0eeac1 | 1013 | struct l2vpn_pw *pw, *ptmp; |
eac6e3f0 RW |
1014 | |
1015 | if (!(xconf->flags & F_LDPD_ENABLED)) | |
56b8a8d2 | 1016 | ldp_config_reset_main(xconf); |
eac6e3f0 RW |
1017 | else { |
1018 | if (!(xconf->ipv4.flags & F_LDPD_AF_ENABLED)) | |
56b8a8d2 | 1019 | ldp_config_reset_af(xconf, AF_INET); |
eac6e3f0 | 1020 | if (!(xconf->ipv6.flags & F_LDPD_AF_ENABLED)) |
56b8a8d2 | 1021 | ldp_config_reset_af(xconf, AF_INET6); |
eac6e3f0 | 1022 | |
7d0eeac1 RW |
1023 | RB_FOREACH_SAFE(iface, iface_head, &xconf->iface_tree, itmp) { |
1024 | if (iface->ipv4.enabled || iface->ipv6.enabled) | |
eac6e3f0 RW |
1025 | continue; |
1026 | ||
1d75a89d | 1027 | QOBJ_UNREG(iface); |
7d0eeac1 RW |
1028 | RB_REMOVE(iface_head, &vty_conf->iface_tree, iface); |
1029 | free(iface); | |
eac6e3f0 | 1030 | } |
7d0eeac1 RW |
1031 | |
1032 | RB_FOREACH_SAFE(nbrp, nbrp_head, &xconf->nbrp_tree, ntmp) { | |
1033 | if (nbrp->flags & (F_NBRP_KEEPALIVE|F_NBRP_GTSM)) | |
1034 | continue; | |
1035 | if (nbrp->auth.method != AUTH_NONE) | |
1036 | continue; | |
1037 | ||
1d75a89d | 1038 | QOBJ_UNREG(nbrp); |
7d0eeac1 RW |
1039 | RB_REMOVE(nbrp_head, &vty_conf->nbrp_tree, nbrp); |
1040 | free(nbrp); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | RB_FOREACH(l2vpn, l2vpn_head, &xconf->l2vpn_tree) { | |
1045 | RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_tree, ptmp) { | |
1046 | if (!(pw->flags & F_PW_STATIC_NBR_ADDR)) { | |
1047 | pw->af = AF_INET; | |
1048 | pw->addr.v4 = pw->lsr_id; | |
1049 | } | |
1050 | ||
1051 | if (pw->lsr_id.s_addr != INADDR_ANY && pw->pwid != 0) | |
eac6e3f0 | 1052 | continue; |
7d0eeac1 RW |
1053 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw); |
1054 | RB_INSERT(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw); | |
1055 | } | |
1056 | RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree, | |
1057 | ptmp) { | |
1058 | if (!(pw->flags & F_PW_STATIC_NBR_ADDR)) { | |
1059 | pw->af = AF_INET; | |
1060 | pw->addr.v4 = pw->lsr_id; | |
1061 | } | |
eac6e3f0 | 1062 | |
7d0eeac1 RW |
1063 | if (pw->lsr_id.s_addr == INADDR_ANY || pw->pwid == 0) |
1064 | continue; | |
1065 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw); | |
1066 | RB_INSERT(l2vpn_pw_head, &l2vpn->pw_tree, pw); | |
eac6e3f0 RW |
1067 | } |
1068 | } | |
1069 | } | |
1070 | ||
1071 | static void | |
56b8a8d2 | 1072 | ldp_config_reset_main(struct ldpd_conf *conf) |
eac6e3f0 RW |
1073 | { |
1074 | struct iface *iface; | |
1075 | struct nbr_params *nbrp; | |
1076 | ||
7d3d7491 | 1077 | while ((iface = RB_ROOT(&conf->iface_tree)) != NULL) { |
1d75a89d | 1078 | QOBJ_UNREG(iface); |
7d3d7491 | 1079 | RB_REMOVE(iface_head, &conf->iface_tree, iface); |
eac6e3f0 RW |
1080 | free(iface); |
1081 | } | |
1082 | ||
76c4abd1 | 1083 | while ((nbrp = RB_ROOT(&conf->nbrp_tree)) != NULL) { |
1d75a89d | 1084 | QOBJ_UNREG(nbrp); |
76c4abd1 | 1085 | RB_REMOVE(nbrp_head, &conf->nbrp_tree, nbrp); |
eac6e3f0 RW |
1086 | free(nbrp); |
1087 | } | |
1088 | ||
1089 | conf->rtr_id.s_addr = INADDR_ANY; | |
56b8a8d2 RW |
1090 | ldp_config_reset_af(conf, AF_INET); |
1091 | ldp_config_reset_af(conf, AF_INET6); | |
eac6e3f0 RW |
1092 | conf->lhello_holdtime = LINK_DFLT_HOLDTIME; |
1093 | conf->lhello_interval = DEFAULT_HELLO_INTERVAL; | |
1094 | conf->thello_holdtime = TARGETED_DFLT_HOLDTIME; | |
1095 | conf->thello_interval = DEFAULT_HELLO_INTERVAL; | |
1096 | conf->trans_pref = DUAL_STACK_LDPOV6; | |
1097 | conf->flags = 0; | |
1098 | } | |
1099 | ||
1100 | static void | |
56b8a8d2 | 1101 | ldp_config_reset_af(struct ldpd_conf *conf, int af) |
eac6e3f0 RW |
1102 | { |
1103 | struct ldpd_af_conf *af_conf; | |
1104 | struct iface *iface; | |
1105 | struct iface_af *ia; | |
1106 | struct tnbr *tnbr, *ttmp; | |
1107 | ||
7d3d7491 | 1108 | RB_FOREACH(iface, iface_head, &conf->iface_tree) { |
eac6e3f0 RW |
1109 | ia = iface_af_get(iface, af); |
1110 | ia->enabled = 0; | |
1111 | } | |
1112 | ||
7989cdba | 1113 | RB_FOREACH_SAFE(tnbr, tnbr_head, &conf->tnbr_tree, ttmp) { |
eac6e3f0 RW |
1114 | if (tnbr->af != af) |
1115 | continue; | |
1116 | ||
1d75a89d | 1117 | QOBJ_UNREG(tnbr); |
7989cdba | 1118 | RB_REMOVE(tnbr_head, &conf->tnbr_tree, tnbr); |
eac6e3f0 RW |
1119 | free(tnbr); |
1120 | } | |
1121 | ||
1122 | af_conf = ldp_af_conf_get(conf, af); | |
1123 | af_conf->keepalive = 180; | |
1124 | af_conf->lhello_holdtime = 0; | |
1125 | af_conf->lhello_interval = 0; | |
1126 | af_conf->thello_holdtime = 0; | |
1127 | af_conf->thello_interval = 0; | |
1128 | memset(&af_conf->trans_addr, 0, sizeof(af_conf->trans_addr)); | |
1129 | af_conf->flags = 0; | |
1130 | } | |
1131 | ||
1d75a89d RW |
1132 | static void |
1133 | ldp_config_reset_l2vpns(struct ldpd_conf *conf) | |
eac6e3f0 | 1134 | { |
1d75a89d RW |
1135 | struct l2vpn *l2vpn; |
1136 | struct l2vpn_if *lif; | |
1137 | struct l2vpn_pw *pw; | |
eac6e3f0 | 1138 | |
1d75a89d RW |
1139 | while ((l2vpn = RB_ROOT(&conf->l2vpn_tree)) != NULL) { |
1140 | while ((lif = RB_ROOT(&l2vpn->if_tree)) != NULL) { | |
1141 | QOBJ_UNREG(lif); | |
1142 | RB_REMOVE(l2vpn_if_head, &l2vpn->if_tree, lif); | |
1143 | free(lif); | |
eac6e3f0 | 1144 | } |
1d75a89d RW |
1145 | while ((pw = RB_ROOT(&l2vpn->pw_tree)) != NULL) { |
1146 | QOBJ_UNREG(pw); | |
1147 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw); | |
1148 | free(pw); | |
eac6e3f0 | 1149 | } |
1d75a89d RW |
1150 | while ((pw = RB_ROOT(&l2vpn->pw_inactive_tree)) != NULL) { |
1151 | QOBJ_UNREG(pw); | |
1152 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw); | |
1153 | free(pw); | |
eac6e3f0 | 1154 | } |
1d75a89d RW |
1155 | QOBJ_UNREG(l2vpn); |
1156 | RB_REMOVE(l2vpn_head, &conf->l2vpn_tree, l2vpn); | |
1157 | free(l2vpn); | |
eac6e3f0 | 1158 | } |
eac6e3f0 RW |
1159 | } |
1160 | ||
1161 | void | |
1162 | ldp_clear_config(struct ldpd_conf *xconf) | |
1163 | { | |
1164 | struct iface *iface; | |
1165 | struct tnbr *tnbr; | |
1166 | struct nbr_params *nbrp; | |
1167 | struct l2vpn *l2vpn; | |
1168 | ||
7d3d7491 RW |
1169 | while ((iface = RB_ROOT(&xconf->iface_tree)) != NULL) { |
1170 | RB_REMOVE(iface_head, &xconf->iface_tree, iface); | |
eac6e3f0 RW |
1171 | free(iface); |
1172 | } | |
7989cdba RW |
1173 | while ((tnbr = RB_ROOT(&xconf->tnbr_tree)) != NULL) { |
1174 | RB_REMOVE(tnbr_head, &xconf->tnbr_tree, tnbr); | |
eac6e3f0 RW |
1175 | free(tnbr); |
1176 | } | |
76c4abd1 RW |
1177 | while ((nbrp = RB_ROOT(&xconf->nbrp_tree)) != NULL) { |
1178 | RB_REMOVE(nbrp_head, &xconf->nbrp_tree, nbrp); | |
eac6e3f0 RW |
1179 | free(nbrp); |
1180 | } | |
90d7e7bd RW |
1181 | while ((l2vpn = RB_ROOT(&xconf->l2vpn_tree)) != NULL) { |
1182 | RB_REMOVE(l2vpn_head, &xconf->l2vpn_tree, l2vpn); | |
eac6e3f0 RW |
1183 | l2vpn_del(l2vpn); |
1184 | } | |
1185 | ||
1186 | free(xconf); | |
1187 | } | |
1188 | ||
1d75a89d RW |
1189 | #define COPY(a, b) do { \ |
1190 | a = malloc(sizeof(*a)); \ | |
1191 | if (a == NULL) \ | |
1192 | fatal(__func__); \ | |
1193 | *a = *b; \ | |
1194 | } while (0) | |
1195 | ||
56b8a8d2 RW |
1196 | void |
1197 | merge_config(struct ldpd_conf *conf, struct ldpd_conf *xconf) | |
8429abe0 RW |
1198 | { |
1199 | merge_global(conf, xconf); | |
1200 | merge_af(AF_INET, &conf->ipv4, &xconf->ipv4); | |
1201 | merge_af(AF_INET6, &conf->ipv6, &xconf->ipv6); | |
56b8a8d2 RW |
1202 | merge_ifaces(conf, xconf); |
1203 | merge_tnbrs(conf, xconf); | |
1204 | merge_nbrps(conf, xconf); | |
1205 | merge_l2vpns(conf, xconf); | |
8429abe0 RW |
1206 | } |
1207 | ||
1208 | static void | |
1209 | merge_global(struct ldpd_conf *conf, struct ldpd_conf *xconf) | |
1210 | { | |
1211 | /* change of router-id requires resetting all neighborships */ | |
1212 | if (conf->rtr_id.s_addr != xconf->rtr_id.s_addr) { | |
1213 | if (ldpd_process == PROC_LDP_ENGINE) { | |
45a8eba9 | 1214 | ldpe_reset_nbrs(AF_UNSPEC); |
8429abe0 RW |
1215 | if (conf->rtr_id.s_addr == INADDR_ANY || |
1216 | xconf->rtr_id.s_addr == INADDR_ANY) { | |
1217 | if_update_all(AF_UNSPEC); | |
1218 | tnbr_update_all(AF_UNSPEC); | |
1219 | } | |
1220 | } | |
1221 | conf->rtr_id = xconf->rtr_id; | |
1222 | } | |
1223 | ||
eac6e3f0 RW |
1224 | conf->lhello_holdtime = xconf->lhello_holdtime; |
1225 | conf->lhello_interval = xconf->lhello_interval; | |
1226 | conf->thello_holdtime = xconf->thello_holdtime; | |
1227 | conf->thello_interval = xconf->thello_interval; | |
1228 | ||
8429abe0 RW |
1229 | if (conf->trans_pref != xconf->trans_pref) { |
1230 | if (ldpd_process == PROC_LDP_ENGINE) | |
1231 | ldpe_reset_ds_nbrs(); | |
1232 | conf->trans_pref = xconf->trans_pref; | |
1233 | } | |
1234 | ||
1235 | if ((conf->flags & F_LDPD_DS_CISCO_INTEROP) != | |
1236 | (xconf->flags & F_LDPD_DS_CISCO_INTEROP)) { | |
1237 | if (ldpd_process == PROC_LDP_ENGINE) | |
1238 | ldpe_reset_ds_nbrs(); | |
1239 | } | |
1240 | ||
1241 | conf->flags = xconf->flags; | |
1242 | } | |
1243 | ||
1244 | static void | |
1245 | merge_af(int af, struct ldpd_af_conf *af_conf, struct ldpd_af_conf *xa) | |
1246 | { | |
45a8eba9 RW |
1247 | int stop_init_backoff = 0; |
1248 | int remove_dynamic_tnbrs = 0; | |
1249 | int change_egress_label = 0; | |
1250 | int reset_nbrs_ipv4 = 0; | |
1251 | int reset_nbrs = 0; | |
1252 | int update_sockets = 0; | |
1253 | ||
1254 | /* update timers */ | |
8429abe0 RW |
1255 | if (af_conf->keepalive != xa->keepalive) { |
1256 | af_conf->keepalive = xa->keepalive; | |
45a8eba9 | 1257 | stop_init_backoff = 1; |
8429abe0 | 1258 | } |
eac6e3f0 RW |
1259 | af_conf->lhello_holdtime = xa->lhello_holdtime; |
1260 | af_conf->lhello_interval = xa->lhello_interval; | |
8429abe0 RW |
1261 | af_conf->thello_holdtime = xa->thello_holdtime; |
1262 | af_conf->thello_interval = xa->thello_interval; | |
1263 | ||
1264 | /* update flags */ | |
45a8eba9 | 1265 | if ((af_conf->flags & F_LDPD_AF_THELLO_ACCEPT) && |
8429abe0 | 1266 | !(xa->flags & F_LDPD_AF_THELLO_ACCEPT)) |
45a8eba9 | 1267 | remove_dynamic_tnbrs = 1; |
8429abe0 RW |
1268 | if ((af_conf->flags & F_LDPD_AF_NO_GTSM) != |
1269 | (xa->flags & F_LDPD_AF_NO_GTSM)) { | |
1270 | if (af == AF_INET6) | |
1271 | /* need to set/unset IPV6_MINHOPCOUNT */ | |
1272 | update_sockets = 1; | |
45a8eba9 | 1273 | else |
8429abe0 | 1274 | /* for LDPv4 just resetting the neighbors is enough */ |
45a8eba9 | 1275 | reset_nbrs_ipv4 = 1; |
8429abe0 | 1276 | } |
8429abe0 RW |
1277 | if ((af_conf->flags & F_LDPD_AF_EXPNULL) != |
1278 | (xa->flags & F_LDPD_AF_EXPNULL)) | |
45a8eba9 | 1279 | change_egress_label = 1; |
8429abe0 RW |
1280 | af_conf->flags = xa->flags; |
1281 | ||
45a8eba9 | 1282 | /* update the transport address */ |
8429abe0 RW |
1283 | if (ldp_addrcmp(af, &af_conf->trans_addr, &xa->trans_addr)) { |
1284 | af_conf->trans_addr = xa->trans_addr; | |
1285 | update_sockets = 1; | |
1286 | } | |
1287 | ||
45a8eba9 RW |
1288 | /* update ACLs */ |
1289 | if (strcmp(af_conf->acl_label_advertise_to, | |
1290 | xa->acl_label_advertise_to) || | |
1291 | strcmp(af_conf->acl_label_advertise_for, | |
1292 | xa->acl_label_advertise_for) || | |
1293 | strcmp(af_conf->acl_label_accept_from, | |
1294 | xa->acl_label_accept_from) || | |
1295 | strcmp(af_conf->acl_label_accept_for, | |
1296 | xa->acl_label_accept_for)) | |
1297 | reset_nbrs = 1; | |
1298 | if (strcmp(af_conf->acl_thello_accept_from, xa->acl_thello_accept_from)) | |
1299 | remove_dynamic_tnbrs = 1; | |
1300 | if (strcmp(af_conf->acl_label_expnull_for, xa->acl_label_expnull_for)) | |
1301 | change_egress_label = 1; | |
1302 | strlcpy(af_conf->acl_thello_accept_from, xa->acl_thello_accept_from, | |
1303 | sizeof(af_conf->acl_thello_accept_from)); | |
1304 | strlcpy(af_conf->acl_label_allocate_for, xa->acl_label_allocate_for, | |
1305 | sizeof(af_conf->acl_label_allocate_for)); | |
1306 | strlcpy(af_conf->acl_label_advertise_to, xa->acl_label_advertise_to, | |
1307 | sizeof(af_conf->acl_label_advertise_to)); | |
1308 | strlcpy(af_conf->acl_label_advertise_for, xa->acl_label_advertise_for, | |
1309 | sizeof(af_conf->acl_label_advertise_for)); | |
1310 | strlcpy(af_conf->acl_label_accept_from, xa->acl_label_accept_from, | |
1311 | sizeof(af_conf->acl_label_accept_from)); | |
1312 | strlcpy(af_conf->acl_label_accept_for, xa->acl_label_accept_for, | |
1313 | sizeof(af_conf->acl_label_accept_for)); | |
1314 | strlcpy(af_conf->acl_label_expnull_for, xa->acl_label_expnull_for, | |
1315 | sizeof(af_conf->acl_label_expnull_for)); | |
1316 | ||
1317 | /* apply the new configuration */ | |
1318 | switch (ldpd_process) { | |
1319 | case PROC_LDE_ENGINE: | |
1320 | if (change_egress_label) | |
1321 | lde_change_egress_label(af); | |
1322 | break; | |
1323 | case PROC_LDP_ENGINE: | |
1324 | if (stop_init_backoff) | |
1325 | ldpe_stop_init_backoff(af); | |
1326 | if (remove_dynamic_tnbrs) | |
1327 | ldpe_remove_dynamic_tnbrs(af); | |
1328 | if (reset_nbrs) | |
1329 | ldpe_reset_nbrs(AF_UNSPEC); | |
1330 | else if (reset_nbrs_ipv4) | |
1331 | ldpe_reset_nbrs(AF_INET); | |
1332 | break; | |
1333 | case PROC_MAIN: | |
1334 | if (update_sockets && iev_ldpe) | |
1335 | imsg_compose_event(iev_ldpe, IMSG_CLOSE_SOCKETS, af, | |
1336 | 0, -1, NULL, 0); | |
1337 | break; | |
1338 | } | |
8429abe0 RW |
1339 | } |
1340 | ||
1341 | static void | |
56b8a8d2 | 1342 | merge_ifaces(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
8429abe0 RW |
1343 | { |
1344 | struct iface *iface, *itmp, *xi; | |
1345 | ||
7d3d7491 | 1346 | RB_FOREACH_SAFE(iface, iface_head, &conf->iface_tree, itmp) { |
8429abe0 | 1347 | /* find deleted interfaces */ |
eac6e3f0 | 1348 | if ((xi = if_lookup_name(xconf, iface->name)) == NULL) { |
4af8997d | 1349 | switch (ldpd_process) { |
4af8997d | 1350 | case PROC_LDP_ENGINE: |
1d75a89d | 1351 | ldpe_if_exit(iface); |
4af8997d | 1352 | break; |
1d75a89d | 1353 | case PROC_LDE_ENGINE: |
4af8997d | 1354 | case PROC_MAIN: |
4af8997d RW |
1355 | break; |
1356 | } | |
1d75a89d | 1357 | RB_REMOVE(iface_head, &conf->iface_tree, iface); |
8429abe0 RW |
1358 | free(iface); |
1359 | } | |
1360 | } | |
7d3d7491 | 1361 | RB_FOREACH_SAFE(xi, iface_head, &xconf->iface_tree, itmp) { |
8429abe0 | 1362 | /* find new interfaces */ |
eac6e3f0 | 1363 | if ((iface = if_lookup_name(conf, xi->name)) == NULL) { |
1d75a89d RW |
1364 | COPY(iface, xi); |
1365 | RB_INSERT(iface_head, &conf->iface_tree, iface); | |
8429abe0 | 1366 | |
1d75a89d RW |
1367 | switch (ldpd_process) { |
1368 | case PROC_LDP_ENGINE: | |
1369 | ldpe_if_init(iface); | |
1370 | break; | |
1371 | case PROC_LDE_ENGINE: | |
1372 | break; | |
1373 | case PROC_MAIN: | |
4af8997d | 1374 | /* resend addresses to activate new interfaces */ |
1d75a89d RW |
1375 | kif_redistribute(iface->name); |
1376 | break; | |
4af8997d | 1377 | } |
8429abe0 RW |
1378 | continue; |
1379 | } | |
1380 | ||
1381 | /* update existing interfaces */ | |
1382 | merge_iface_af(&iface->ipv4, &xi->ipv4); | |
1383 | merge_iface_af(&iface->ipv6, &xi->ipv6); | |
8429abe0 RW |
1384 | } |
1385 | } | |
1386 | ||
1387 | static void | |
1388 | merge_iface_af(struct iface_af *ia, struct iface_af *xi) | |
1389 | { | |
1390 | if (ia->enabled != xi->enabled) { | |
1391 | ia->enabled = xi->enabled; | |
1392 | if (ldpd_process == PROC_LDP_ENGINE) | |
61cd1100 | 1393 | ldp_if_update(ia->iface, ia->af); |
8429abe0 RW |
1394 | } |
1395 | ia->hello_holdtime = xi->hello_holdtime; | |
1396 | ia->hello_interval = xi->hello_interval; | |
1397 | } | |
1398 | ||
1399 | static void | |
56b8a8d2 | 1400 | merge_tnbrs(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
8429abe0 RW |
1401 | { |
1402 | struct tnbr *tnbr, *ttmp, *xt; | |
1403 | ||
7989cdba | 1404 | RB_FOREACH_SAFE(tnbr, tnbr_head, &conf->tnbr_tree, ttmp) { |
8429abe0 RW |
1405 | if (!(tnbr->flags & F_TNBR_CONFIGURED)) |
1406 | continue; | |
1407 | ||
1408 | /* find deleted tnbrs */ | |
1409 | if ((xt = tnbr_find(xconf, tnbr->af, &tnbr->addr)) == NULL) { | |
4af8997d | 1410 | switch (ldpd_process) { |
4af8997d | 1411 | case PROC_LDP_ENGINE: |
8429abe0 | 1412 | tnbr->flags &= ~F_TNBR_CONFIGURED; |
7989cdba | 1413 | tnbr_check(conf, tnbr); |
4af8997d | 1414 | break; |
1d75a89d | 1415 | case PROC_LDE_ENGINE: |
4af8997d | 1416 | case PROC_MAIN: |
7989cdba | 1417 | RB_REMOVE(tnbr_head, &conf->tnbr_tree, tnbr); |
8429abe0 | 1418 | free(tnbr); |
4af8997d | 1419 | break; |
8429abe0 RW |
1420 | } |
1421 | } | |
1422 | } | |
7989cdba | 1423 | RB_FOREACH_SAFE(xt, tnbr_head, &xconf->tnbr_tree, ttmp) { |
8429abe0 RW |
1424 | /* find new tnbrs */ |
1425 | if ((tnbr = tnbr_find(conf, xt->af, &xt->addr)) == NULL) { | |
1d75a89d RW |
1426 | COPY(tnbr, xt); |
1427 | RB_INSERT(tnbr_head, &conf->tnbr_tree, tnbr); | |
8429abe0 | 1428 | |
4af8997d | 1429 | switch (ldpd_process) { |
4af8997d | 1430 | case PROC_LDP_ENGINE: |
1d75a89d | 1431 | tnbr_update(tnbr); |
4af8997d | 1432 | break; |
1d75a89d | 1433 | case PROC_LDE_ENGINE: |
4af8997d | 1434 | case PROC_MAIN: |
4af8997d RW |
1435 | break; |
1436 | } | |
8429abe0 RW |
1437 | continue; |
1438 | } | |
1439 | ||
1440 | /* update existing tnbrs */ | |
1441 | if (!(tnbr->flags & F_TNBR_CONFIGURED)) | |
1442 | tnbr->flags |= F_TNBR_CONFIGURED; | |
8429abe0 RW |
1443 | } |
1444 | } | |
1445 | ||
1446 | static void | |
56b8a8d2 | 1447 | merge_nbrps(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
8429abe0 RW |
1448 | { |
1449 | struct nbr_params *nbrp, *ntmp, *xn; | |
1450 | struct nbr *nbr; | |
1451 | int nbrp_changed; | |
1452 | ||
76c4abd1 | 1453 | RB_FOREACH_SAFE(nbrp, nbrp_head, &conf->nbrp_tree, ntmp) { |
8429abe0 RW |
1454 | /* find deleted nbrps */ |
1455 | if ((xn = nbr_params_find(xconf, nbrp->lsr_id)) == NULL) { | |
4af8997d | 1456 | switch (ldpd_process) { |
4af8997d | 1457 | case PROC_LDP_ENGINE: |
8429abe0 RW |
1458 | nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr); |
1459 | if (nbr) { | |
1460 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
eac6e3f0 | 1461 | #ifdef __OpenBSD__ |
8429abe0 | 1462 | pfkey_remove(nbr); |
eac6e3f0 RW |
1463 | #else |
1464 | sock_set_md5sig( | |
1465 | (ldp_af_global_get(&global, | |
1466 | nbr->af))->ldp_session_socket, | |
1467 | nbr->af, &nbr->raddr, NULL); | |
1468 | #endif | |
0f7b5df9 | 1469 | nbr->auth.method = AUTH_NONE; |
8429abe0 RW |
1470 | if (nbr_session_active_role(nbr)) |
1471 | nbr_establish_connection(nbr); | |
1472 | } | |
4af8997d | 1473 | break; |
1d75a89d | 1474 | case PROC_LDE_ENGINE: |
4af8997d | 1475 | case PROC_MAIN: |
4af8997d | 1476 | break; |
8429abe0 | 1477 | } |
76c4abd1 | 1478 | RB_REMOVE(nbrp_head, &conf->nbrp_tree, nbrp); |
8429abe0 RW |
1479 | free(nbrp); |
1480 | } | |
1481 | } | |
76c4abd1 | 1482 | RB_FOREACH_SAFE(xn, nbrp_head, &xconf->nbrp_tree, ntmp) { |
8429abe0 RW |
1483 | /* find new nbrps */ |
1484 | if ((nbrp = nbr_params_find(conf, xn->lsr_id)) == NULL) { | |
1d75a89d RW |
1485 | COPY(nbrp, xn); |
1486 | RB_INSERT(nbrp_head, &conf->nbrp_tree, nbrp); | |
8429abe0 | 1487 | |
4af8997d | 1488 | switch (ldpd_process) { |
4af8997d | 1489 | case PROC_LDP_ENGINE: |
1d75a89d | 1490 | nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr); |
8429abe0 RW |
1491 | if (nbr) { |
1492 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
1d75a89d | 1493 | nbr->auth.method = nbrp->auth.method; |
eac6e3f0 | 1494 | #ifdef __OpenBSD__ |
1d75a89d | 1495 | if (pfkey_establish(nbr, nbrp) == -1) |
8429abe0 | 1496 | fatalx("pfkey setup failed"); |
eac6e3f0 RW |
1497 | #else |
1498 | sock_set_md5sig( | |
1499 | (ldp_af_global_get(&global, | |
1500 | nbr->af))->ldp_session_socket, | |
1501 | nbr->af, &nbr->raddr, | |
1d75a89d | 1502 | nbrp->auth.md5key); |
eac6e3f0 | 1503 | #endif |
8429abe0 RW |
1504 | if (nbr_session_active_role(nbr)) |
1505 | nbr_establish_connection(nbr); | |
1506 | } | |
4af8997d | 1507 | break; |
1d75a89d | 1508 | case PROC_LDE_ENGINE: |
4af8997d | 1509 | case PROC_MAIN: |
4af8997d | 1510 | break; |
8429abe0 RW |
1511 | } |
1512 | continue; | |
1513 | } | |
1514 | ||
1515 | /* update existing nbrps */ | |
1516 | if (nbrp->flags != xn->flags || | |
1517 | nbrp->keepalive != xn->keepalive || | |
1518 | nbrp->gtsm_enabled != xn->gtsm_enabled || | |
1519 | nbrp->gtsm_hops != xn->gtsm_hops || | |
1520 | nbrp->auth.method != xn->auth.method || | |
1521 | strcmp(nbrp->auth.md5key, xn->auth.md5key) != 0) | |
1522 | nbrp_changed = 1; | |
1523 | else | |
1524 | nbrp_changed = 0; | |
1525 | ||
1526 | nbrp->keepalive = xn->keepalive; | |
1527 | nbrp->gtsm_enabled = xn->gtsm_enabled; | |
1528 | nbrp->gtsm_hops = xn->gtsm_hops; | |
1529 | nbrp->auth.method = xn->auth.method; | |
1530 | strlcpy(nbrp->auth.md5key, xn->auth.md5key, | |
1531 | sizeof(nbrp->auth.md5key)); | |
1532 | nbrp->auth.md5key_len = xn->auth.md5key_len; | |
1533 | nbrp->flags = xn->flags; | |
1534 | ||
1535 | if (ldpd_process == PROC_LDP_ENGINE) { | |
1536 | nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr); | |
1537 | if (nbr && nbrp_changed) { | |
1538 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
eac6e3f0 | 1539 | #ifdef __OpenBSD__ |
8429abe0 | 1540 | pfkey_remove(nbr); |
0f7b5df9 | 1541 | nbr->auth.method = nbrp->auth.method; |
8429abe0 RW |
1542 | if (pfkey_establish(nbr, nbrp) == -1) |
1543 | fatalx("pfkey setup failed"); | |
eac6e3f0 | 1544 | #else |
0f7b5df9 | 1545 | nbr->auth.method = nbrp->auth.method; |
eac6e3f0 RW |
1546 | sock_set_md5sig((ldp_af_global_get(&global, |
1547 | nbr->af))->ldp_session_socket, nbr->af, | |
1548 | &nbr->raddr, nbrp->auth.md5key); | |
1549 | #endif | |
8429abe0 RW |
1550 | if (nbr_session_active_role(nbr)) |
1551 | nbr_establish_connection(nbr); | |
1552 | } | |
1553 | } | |
8429abe0 RW |
1554 | } |
1555 | } | |
1556 | ||
1557 | static void | |
56b8a8d2 | 1558 | merge_l2vpns(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
8429abe0 RW |
1559 | { |
1560 | struct l2vpn *l2vpn, *ltmp, *xl; | |
1561 | ||
90d7e7bd | 1562 | RB_FOREACH_SAFE(l2vpn, l2vpn_head, &conf->l2vpn_tree, ltmp) { |
8429abe0 RW |
1563 | /* find deleted l2vpns */ |
1564 | if ((xl = l2vpn_find(xconf, l2vpn->name)) == NULL) { | |
8429abe0 RW |
1565 | switch (ldpd_process) { |
1566 | case PROC_LDE_ENGINE: | |
1567 | l2vpn_exit(l2vpn); | |
1568 | break; | |
1569 | case PROC_LDP_ENGINE: | |
1570 | ldpe_l2vpn_exit(l2vpn); | |
1571 | break; | |
1572 | case PROC_MAIN: | |
1573 | break; | |
1574 | } | |
1d75a89d | 1575 | RB_REMOVE(l2vpn_head, &conf->l2vpn_tree, l2vpn); |
8429abe0 RW |
1576 | l2vpn_del(l2vpn); |
1577 | } | |
1578 | } | |
90d7e7bd | 1579 | RB_FOREACH_SAFE(xl, l2vpn_head, &xconf->l2vpn_tree, ltmp) { |
8429abe0 RW |
1580 | /* find new l2vpns */ |
1581 | if ((l2vpn = l2vpn_find(conf, xl->name)) == NULL) { | |
1d75a89d RW |
1582 | COPY(l2vpn, xl); |
1583 | RB_INSERT(l2vpn_head, &conf->l2vpn_tree, l2vpn); | |
1584 | RB_INIT(&l2vpn->if_tree); | |
1585 | RB_INIT(&l2vpn->pw_tree); | |
1586 | RB_INIT(&l2vpn->pw_inactive_tree); | |
8429abe0 RW |
1587 | |
1588 | switch (ldpd_process) { | |
1589 | case PROC_LDE_ENGINE: | |
1d75a89d | 1590 | l2vpn_init(l2vpn); |
8429abe0 RW |
1591 | break; |
1592 | case PROC_LDP_ENGINE: | |
1d75a89d | 1593 | ldpe_l2vpn_init(l2vpn); |
8429abe0 RW |
1594 | break; |
1595 | case PROC_MAIN: | |
1596 | break; | |
1597 | } | |
8429abe0 RW |
1598 | } |
1599 | ||
1600 | /* update existing l2vpns */ | |
56b8a8d2 | 1601 | merge_l2vpn(conf, l2vpn, xl); |
8429abe0 RW |
1602 | } |
1603 | } | |
1604 | ||
1605 | static void | |
56b8a8d2 | 1606 | merge_l2vpn(struct ldpd_conf *xconf, struct l2vpn *l2vpn, struct l2vpn *xl) |
8429abe0 RW |
1607 | { |
1608 | struct l2vpn_if *lif, *ftmp, *xf; | |
1609 | struct l2vpn_pw *pw, *ptmp, *xp; | |
1610 | struct nbr *nbr; | |
1611 | int reset_nbr, reinstall_pwfec, reinstall_tnbr; | |
1612 | int previous_pw_type, previous_mtu; | |
1613 | ||
1614 | previous_pw_type = l2vpn->pw_type; | |
1615 | previous_mtu = l2vpn->mtu; | |
1616 | ||
1617 | /* merge intefaces */ | |
029c1958 | 1618 | RB_FOREACH_SAFE(lif, l2vpn_if_head, &l2vpn->if_tree, ftmp) { |
8429abe0 | 1619 | /* find deleted interfaces */ |
52bd4c23 | 1620 | if ((xf = l2vpn_if_find(xl, lif->ifname)) == NULL) { |
029c1958 | 1621 | RB_REMOVE(l2vpn_if_head, &l2vpn->if_tree, lif); |
8429abe0 RW |
1622 | free(lif); |
1623 | } | |
1624 | } | |
029c1958 | 1625 | RB_FOREACH_SAFE(xf, l2vpn_if_head, &xl->if_tree, ftmp) { |
8429abe0 | 1626 | /* find new interfaces */ |
52bd4c23 | 1627 | if ((lif = l2vpn_if_find(l2vpn, xf->ifname)) == NULL) { |
1d75a89d RW |
1628 | COPY(lif, xf); |
1629 | RB_INSERT(l2vpn_if_head, &l2vpn->if_tree, lif); | |
1630 | lif->l2vpn = l2vpn; | |
1631 | ||
1632 | switch (ldpd_process) { | |
1633 | case PROC_LDP_ENGINE: | |
1634 | case PROC_LDE_ENGINE: | |
1635 | break; | |
1636 | case PROC_MAIN: | |
1637 | kif_redistribute(lif->ifname); | |
1638 | break; | |
52b530fc | 1639 | } |
8429abe0 | 1640 | } |
8429abe0 RW |
1641 | } |
1642 | ||
eac6e3f0 | 1643 | /* merge active pseudowires */ |
20bacaeb | 1644 | RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_tree, ptmp) { |
eac6e3f0 | 1645 | /* find deleted active pseudowires */ |
5c3f00af | 1646 | if ((xp = l2vpn_pw_find_active(xl, pw->ifname)) == NULL) { |
8429abe0 RW |
1647 | switch (ldpd_process) { |
1648 | case PROC_LDE_ENGINE: | |
1649 | l2vpn_pw_exit(pw); | |
1650 | break; | |
1651 | case PROC_LDP_ENGINE: | |
1652 | ldpe_l2vpn_pw_exit(pw); | |
1653 | break; | |
1654 | case PROC_MAIN: | |
1655 | break; | |
1656 | } | |
1657 | ||
20bacaeb | 1658 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_tree, pw); |
8429abe0 RW |
1659 | free(pw); |
1660 | } | |
1661 | } | |
20bacaeb | 1662 | RB_FOREACH_SAFE(xp, l2vpn_pw_head, &xl->pw_tree, ptmp) { |
eac6e3f0 | 1663 | /* find new active pseudowires */ |
5c3f00af | 1664 | if ((pw = l2vpn_pw_find_active(l2vpn, xp->ifname)) == NULL) { |
1d75a89d RW |
1665 | COPY(pw, xp); |
1666 | RB_INSERT(l2vpn_pw_head, &l2vpn->pw_tree, pw); | |
1667 | pw->l2vpn = l2vpn; | |
8429abe0 RW |
1668 | |
1669 | switch (ldpd_process) { | |
1670 | case PROC_LDE_ENGINE: | |
1d75a89d | 1671 | l2vpn_pw_init(pw); |
8429abe0 RW |
1672 | break; |
1673 | case PROC_LDP_ENGINE: | |
1d75a89d | 1674 | ldpe_l2vpn_pw_init(pw); |
8429abe0 RW |
1675 | break; |
1676 | case PROC_MAIN: | |
1d75a89d | 1677 | kif_redistribute(pw->ifname); |
8429abe0 RW |
1678 | break; |
1679 | } | |
1680 | continue; | |
1681 | } | |
1682 | ||
eac6e3f0 | 1683 | /* update existing active pseudowire */ |
8429abe0 RW |
1684 | if (pw->af != xp->af || |
1685 | ldp_addrcmp(pw->af, &pw->addr, &xp->addr)) | |
1686 | reinstall_tnbr = 1; | |
1687 | else | |
1688 | reinstall_tnbr = 0; | |
1689 | ||
1690 | /* changes that require a session restart */ | |
1691 | if ((pw->flags & (F_PW_STATUSTLV_CONF|F_PW_CWORD_CONF)) != | |
1692 | (xp->flags & (F_PW_STATUSTLV_CONF|F_PW_CWORD_CONF))) | |
1693 | reset_nbr = 1; | |
1694 | else | |
1695 | reset_nbr = 0; | |
1696 | ||
1697 | if (l2vpn->pw_type != xl->pw_type || l2vpn->mtu != xl->mtu || | |
1698 | pw->pwid != xp->pwid || reinstall_tnbr || reset_nbr || | |
1699 | pw->lsr_id.s_addr != xp->lsr_id.s_addr) | |
1700 | reinstall_pwfec = 1; | |
1701 | else | |
1702 | reinstall_pwfec = 0; | |
1703 | ||
1704 | if (ldpd_process == PROC_LDP_ENGINE) { | |
1705 | if (reinstall_tnbr) | |
1706 | ldpe_l2vpn_pw_exit(pw); | |
1707 | if (reset_nbr) { | |
1708 | nbr = nbr_find_ldpid(pw->lsr_id.s_addr); | |
1709 | if (nbr && nbr->state == NBR_STA_OPER) | |
1710 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
1711 | } | |
1712 | } | |
1713 | if (ldpd_process == PROC_LDE_ENGINE && | |
1714 | !reset_nbr && reinstall_pwfec) | |
1715 | l2vpn_pw_exit(pw); | |
1716 | pw->lsr_id = xp->lsr_id; | |
1717 | pw->af = xp->af; | |
1718 | pw->addr = xp->addr; | |
1719 | pw->pwid = xp->pwid; | |
1720 | strlcpy(pw->ifname, xp->ifname, sizeof(pw->ifname)); | |
1721 | pw->ifindex = xp->ifindex; | |
1722 | if (xp->flags & F_PW_CWORD_CONF) | |
1723 | pw->flags |= F_PW_CWORD_CONF; | |
1724 | else | |
1725 | pw->flags &= ~F_PW_CWORD_CONF; | |
1726 | if (xp->flags & F_PW_STATUSTLV_CONF) | |
1727 | pw->flags |= F_PW_STATUSTLV_CONF; | |
1728 | else | |
1729 | pw->flags &= ~F_PW_STATUSTLV_CONF; | |
eac6e3f0 RW |
1730 | if (xp->flags & F_PW_STATIC_NBR_ADDR) |
1731 | pw->flags |= F_PW_STATIC_NBR_ADDR; | |
1732 | else | |
1733 | pw->flags &= ~F_PW_STATIC_NBR_ADDR; | |
8429abe0 RW |
1734 | if (ldpd_process == PROC_LDP_ENGINE && reinstall_tnbr) |
1735 | ldpe_l2vpn_pw_init(pw); | |
1736 | if (ldpd_process == PROC_LDE_ENGINE && | |
1737 | !reset_nbr && reinstall_pwfec) { | |
1738 | l2vpn->pw_type = xl->pw_type; | |
1739 | l2vpn->mtu = xl->mtu; | |
1740 | l2vpn_pw_init(pw); | |
1741 | l2vpn->pw_type = previous_pw_type; | |
1742 | l2vpn->mtu = previous_mtu; | |
1743 | } | |
8429abe0 RW |
1744 | } |
1745 | ||
eac6e3f0 | 1746 | /* merge inactive pseudowires */ |
20bacaeb | 1747 | RB_FOREACH_SAFE(pw, l2vpn_pw_head, &l2vpn->pw_inactive_tree, ptmp) { |
eac6e3f0 | 1748 | /* find deleted inactive pseudowires */ |
5c3f00af | 1749 | if ((xp = l2vpn_pw_find_inactive(xl, pw->ifname)) == NULL) { |
20bacaeb | 1750 | RB_REMOVE(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw); |
eac6e3f0 RW |
1751 | free(pw); |
1752 | } | |
1753 | } | |
20bacaeb | 1754 | RB_FOREACH_SAFE(xp, l2vpn_pw_head, &xl->pw_inactive_tree, ptmp) { |
eac6e3f0 | 1755 | /* find new inactive pseudowires */ |
5c3f00af | 1756 | if ((pw = l2vpn_pw_find_inactive(l2vpn, xp->ifname)) == NULL) { |
1d75a89d RW |
1757 | COPY(pw, xp); |
1758 | RB_INSERT(l2vpn_pw_head, &l2vpn->pw_inactive_tree, pw); | |
1759 | pw->l2vpn = l2vpn; | |
1760 | ||
1761 | switch (ldpd_process) { | |
1762 | case PROC_LDE_ENGINE: | |
1763 | case PROC_LDP_ENGINE: | |
1764 | break; | |
1765 | case PROC_MAIN: | |
1766 | kif_redistribute(pw->ifname); | |
1767 | break; | |
52b530fc | 1768 | } |
eac6e3f0 RW |
1769 | continue; |
1770 | } | |
1771 | ||
1772 | /* update existing inactive pseudowire */ | |
1773 | pw->lsr_id.s_addr = xp->lsr_id.s_addr; | |
1774 | pw->af = xp->af; | |
1775 | pw->addr = xp->addr; | |
1776 | pw->pwid = xp->pwid; | |
1777 | strlcpy(pw->ifname, xp->ifname, sizeof(pw->ifname)); | |
1778 | pw->ifindex = xp->ifindex; | |
1779 | pw->flags = xp->flags; | |
eac6e3f0 | 1780 | } |
eac6e3f0 | 1781 | |
8429abe0 RW |
1782 | l2vpn->pw_type = xl->pw_type; |
1783 | l2vpn->mtu = xl->mtu; | |
1784 | strlcpy(l2vpn->br_ifname, xl->br_ifname, sizeof(l2vpn->br_ifname)); | |
1785 | l2vpn->br_ifindex = xl->br_ifindex; | |
1786 | } | |
1787 | ||
1788 | struct ldpd_conf * | |
1789 | config_new_empty(void) | |
1790 | { | |
1791 | struct ldpd_conf *xconf; | |
1792 | ||
1793 | xconf = calloc(1, sizeof(*xconf)); | |
1794 | if (xconf == NULL) | |
1795 | fatal(NULL); | |
1796 | ||
7d3d7491 | 1797 | RB_INIT(&xconf->iface_tree); |
7989cdba | 1798 | RB_INIT(&xconf->tnbr_tree); |
76c4abd1 | 1799 | RB_INIT(&xconf->nbrp_tree); |
90d7e7bd | 1800 | RB_INIT(&xconf->l2vpn_tree); |
8429abe0 RW |
1801 | |
1802 | return (xconf); | |
1803 | } | |
1804 | ||
1805 | void | |
1806 | config_clear(struct ldpd_conf *conf) | |
1807 | { | |
1808 | struct ldpd_conf *xconf; | |
1809 | ||
1810 | /* | |
1811 | * Merge current config with an empty config, this will deactivate | |
1812 | * and deallocate all the interfaces, pseudowires and so on. Before | |
1813 | * merging, copy the router-id and other variables to avoid some | |
1814 | * unnecessary operations, like trying to reset the neighborships. | |
1815 | */ | |
1816 | xconf = config_new_empty(); | |
1817 | xconf->ipv4 = conf->ipv4; | |
1818 | xconf->ipv6 = conf->ipv6; | |
1819 | xconf->rtr_id = conf->rtr_id; | |
1820 | xconf->trans_pref = conf->trans_pref; | |
1821 | xconf->flags = conf->flags; | |
1822 | merge_config(conf, xconf); | |
1d75a89d | 1823 | free(xconf); |
8429abe0 RW |
1824 | free(conf); |
1825 | } |