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>
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.
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.
30 #include "ldp_debug.h"
32 #include <lib/version.h>
45 #include "lib_errors.h"
47 static void ldpd_shutdown(void);
48 static pid_t
start_child(enum ldpd_process
, char *, int, int);
49 static int main_dispatch_ldpe(struct thread
*);
50 static int main_dispatch_lde(struct thread
*);
51 static int main_imsg_send_ipc_sockets(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
*);
56 static void ldp_config_normalize(struct ldpd_conf
*);
57 static void ldp_config_reset(struct ldpd_conf
*);
58 static void ldp_config_reset_main(struct ldpd_conf
*);
59 static void ldp_config_reset_af(struct ldpd_conf
*, int);
60 static void ldp_config_reset_l2vpns(struct ldpd_conf
*);
61 static void merge_global(struct ldpd_conf
*, struct ldpd_conf
*);
62 static void merge_af(int, struct ldpd_af_conf
*,
63 struct ldpd_af_conf
*);
64 static void merge_ifaces(struct ldpd_conf
*, struct ldpd_conf
*);
65 static void merge_iface_af(struct iface_af
*, struct iface_af
*);
66 static void merge_tnbrs(struct ldpd_conf
*, struct ldpd_conf
*);
67 static void merge_nbrps(struct ldpd_conf
*, struct ldpd_conf
*);
68 static void merge_l2vpns(struct ldpd_conf
*, struct ldpd_conf
*);
69 static void merge_l2vpn(struct ldpd_conf
*, struct l2vpn
*,
72 DEFINE_QOBJ_TYPE(iface
)
73 DEFINE_QOBJ_TYPE(tnbr
)
74 DEFINE_QOBJ_TYPE(nbr_params
)
75 DEFINE_QOBJ_TYPE(l2vpn_if
)
76 DEFINE_QOBJ_TYPE(l2vpn_pw
)
77 DEFINE_QOBJ_TYPE(l2vpn
)
78 DEFINE_QOBJ_TYPE(ldpd_conf
)
80 struct ldpd_global global
;
81 struct ldpd_init init
;
82 struct ldpd_conf
*ldpd_conf
, *vty_conf
;
84 static struct imsgev
*iev_ldpe
, *iev_ldpe_sync
;
85 static struct imsgev
*iev_lde
, *iev_lde_sync
;
86 static pid_t ldpe_pid
;
89 #define LDP_DEFAULT_CONFIG "ldpd.conf"
90 #define LDP_VTY_PORT 2612
92 /* Master of threads. */
93 struct thread_master
*master
;
95 static struct frr_daemon_info ldpd_di
;
98 static zebra_capabilities_t _caps_p
[] =
104 struct zebra_privs_t ldpd_privs
=
106 #if defined(FRR_USER) && defined(FRR_GROUP)
110 #if defined(VTY_GROUP)
111 .vty_group
= VTY_GROUP
,
114 .cap_num_p
= array_size(_caps_p
),
118 /* CTL Socket path */
119 char ctl_sock_path
[MAXPATHLEN
];
122 #define OPTION_CTLSOCK 1001
123 static struct option longopts
[] =
125 { "ctl_socket", required_argument
, NULL
, OPTION_CTLSOCK
},
126 { "instance", required_argument
, NULL
, 'n'},
130 /* SIGHUP handler. */
134 log_info("SIGHUP received");
137 * Do a full configuration reload. In other words, reset vty_conf
138 * and build a new configuartion from scratch.
140 ldp_config_reset(vty_conf
);
141 vty_read_config(NULL
, ldpd_di
.config_file
, config_default
);
142 ldp_config_apply(NULL
, vty_conf
);
145 /* SIGINT / SIGTERM handler. */
149 log_info("SIGINT received");
153 /* SIGUSR1 handler. */
160 static struct quagga_signal_t ldp_signals
[] =
180 static const struct frr_yang_module_info
*ldpd_yang_modules
[] = {
183 FRR_DAEMON_INFO(ldpd
, LDP
,
184 .vty_port
= LDP_VTY_PORT
,
186 .proghelp
= "Implementation of the LDP protocol.",
188 .signals
= ldp_signals
,
189 .n_signals
= array_size(ldp_signals
),
191 .privs
= &ldpd_privs
,
193 .yang_modules
= ldpd_yang_modules
,
194 .n_yang_modules
= array_size(ldpd_yang_modules
),
197 static int ldp_config_fork_apply(struct thread
*t
)
200 * So the frr_config_fork() function schedules
201 * the read of the vty config( if there is a
202 * non-integrated config ) to be after the
203 * end of startup and we are starting the
204 * main process loop. We need to schedule
205 * the application of this if necessary
206 * after the read in of the config.
208 ldp_config_apply(NULL
, vty_conf
);
214 main(int argc
, char *argv
[])
217 int lflag
= 0, eflag
= 0;
218 int pipe_parent2ldpe
[2], pipe_parent2ldpe_sync
[2];
219 int pipe_parent2lde
[2], pipe_parent2lde_sync
[2];
221 struct thread
*thread
= NULL
;
222 bool ctl_sock_used
= false;
224 snprintf(ctl_sock_path
, sizeof(ctl_sock_path
), LDPD_SOCKET
,
227 ldpd_process
= PROC_MAIN
;
228 log_procname
= log_procnames
[ldpd_process
];
230 saved_argv0
= argv
[0];
231 if (saved_argv0
== NULL
)
232 saved_argv0
= (char *)"ldpd";
234 frr_preinit(&ldpd_di
, argc
, argv
);
235 frr_opt_add("LEn:", longopts
,
236 " --ctl_socket Override ctl socket path\n"
237 " -n, --instance Instance id\n");
239 /* set default instance (to differentiate ldpd socket from lde one */
245 opt
= frr_getopt(argc
, argv
, NULL
);
254 ctl_sock_used
= true;
255 ctl_sock_name
= strrchr(LDPD_SOCKET
, '/');
261 * LDPD_SOCKET configured as relative path
262 * during config? Should really never happen for
265 ctl_sock_name
= (char *)LDPD_SOCKET
;
266 strlcpy(ctl_sock_path
, optarg
, sizeof(ctl_sock_path
));
267 strlcat(ctl_sock_path
, "/", sizeof(ctl_sock_path
));
268 strlcat(ctl_sock_path
, ctl_sock_name
,
269 sizeof(ctl_sock_path
));
272 init
.instance
= atoi(optarg
);
273 if (init
.instance
< 1)
288 if (ldpd_di
.pathspace
&& !ctl_sock_used
)
289 snprintf(ctl_sock_path
, sizeof(ctl_sock_path
), LDPD_SOCKET
,
290 "/", ldpd_di
.pathspace
);
292 strlcpy(init
.user
, ldpd_privs
.user
, sizeof(init
.user
));
293 strlcpy(init
.group
, ldpd_privs
.group
, sizeof(init
.group
));
294 strlcpy(init
.ctl_sock_path
, ctl_sock_path
, sizeof(init
.ctl_sock_path
));
295 strlcpy(init
.zclient_serv_path
, frr_zclientpath
,
296 sizeof(init
.zclient_serv_path
));
299 if (argc
> 0 || (lflag
&& eflag
))
302 /* check for root privileges */
303 if (geteuid() != 0) {
305 perror(ldpd_di
.progname
);
310 openzlog(ldpd_di
.progname
, "LDP", 0,
311 LOG_CONS
| LOG_NDELAY
| LOG_PID
, LOG_DAEMON
);
317 if (socketpair(AF_UNIX
, SOCK_STREAM
, PF_UNSPEC
, pipe_parent2ldpe
) == -1)
319 if (socketpair(AF_UNIX
, SOCK_STREAM
, PF_UNSPEC
,
320 pipe_parent2ldpe_sync
) == -1)
322 if (socketpair(AF_UNIX
, SOCK_STREAM
, PF_UNSPEC
, pipe_parent2lde
) == -1)
324 if (socketpair(AF_UNIX
, SOCK_STREAM
, PF_UNSPEC
,
325 pipe_parent2lde_sync
) == -1)
327 sock_set_nonblock(pipe_parent2ldpe
[0]);
328 sock_set_cloexec(pipe_parent2ldpe
[0]);
329 sock_set_nonblock(pipe_parent2ldpe
[1]);
330 sock_set_cloexec(pipe_parent2ldpe
[1]);
331 sock_set_nonblock(pipe_parent2ldpe_sync
[0]);
332 sock_set_cloexec(pipe_parent2ldpe_sync
[0]);
333 sock_set_cloexec(pipe_parent2ldpe_sync
[1]);
334 sock_set_nonblock(pipe_parent2lde
[0]);
335 sock_set_cloexec(pipe_parent2lde
[0]);
336 sock_set_nonblock(pipe_parent2lde
[1]);
337 sock_set_cloexec(pipe_parent2lde
[1]);
338 sock_set_nonblock(pipe_parent2lde_sync
[0]);
339 sock_set_cloexec(pipe_parent2lde_sync
[0]);
340 sock_set_cloexec(pipe_parent2lde_sync
[1]);
343 lde_pid
= start_child(PROC_LDE_ENGINE
, saved_argv0
,
344 pipe_parent2lde
[1], pipe_parent2lde_sync
[1]);
345 ldpe_pid
= start_child(PROC_LDP_ENGINE
, saved_argv0
,
346 pipe_parent2ldpe
[1], pipe_parent2ldpe_sync
[1]);
350 vrf_init(NULL
, NULL
, NULL
, NULL
, NULL
);
353 ldp_zebra_init(master
);
356 * Create base configuration with sane defaults. All configuration
357 * requests (e.g. CLI) act on vty_conf and then call ldp_config_apply()
358 * to merge the changes into ldpd_conf, which contains the actual
359 * running configuration.
361 ldpd_conf
= config_new_empty();
362 vty_conf
= config_new_empty();
363 QOBJ_REG(vty_conf
, ldpd_conf
);
365 /* read configuration file and daemonize */
368 /* apply configuration */
369 thread_add_event(master
, ldp_config_fork_apply
, NULL
, 0, &thread
);
371 /* setup pipes to children */
372 if ((iev_ldpe
= calloc(1, sizeof(struct imsgev
))) == NULL
||
373 (iev_ldpe_sync
= calloc(1, sizeof(struct imsgev
))) == NULL
||
374 (iev_lde
= calloc(1, sizeof(struct imsgev
))) == NULL
||
375 (iev_lde_sync
= calloc(1, sizeof(struct imsgev
))) == NULL
)
377 imsg_init(&iev_ldpe
->ibuf
, pipe_parent2ldpe
[0]);
378 iev_ldpe
->handler_read
= main_dispatch_ldpe
;
379 iev_ldpe
->ev_read
= NULL
;
380 thread_add_read(master
, iev_ldpe
->handler_read
, iev_ldpe
, iev_ldpe
->ibuf
.fd
,
382 iev_ldpe
->handler_write
= ldp_write_handler
;
384 imsg_init(&iev_ldpe_sync
->ibuf
, pipe_parent2ldpe_sync
[0]);
385 iev_ldpe_sync
->handler_read
= main_dispatch_ldpe
;
386 iev_ldpe_sync
->ev_read
= NULL
;
387 thread_add_read(master
, iev_ldpe_sync
->handler_read
, iev_ldpe_sync
, iev_ldpe_sync
->ibuf
.fd
,
388 &iev_ldpe_sync
->ev_read
);
389 iev_ldpe_sync
->handler_write
= ldp_write_handler
;
391 imsg_init(&iev_lde
->ibuf
, pipe_parent2lde
[0]);
392 iev_lde
->handler_read
= main_dispatch_lde
;
393 iev_lde
->ev_read
= NULL
;
394 thread_add_read(master
, iev_lde
->handler_read
, iev_lde
, iev_lde
->ibuf
.fd
,
396 iev_lde
->handler_write
= ldp_write_handler
;
398 imsg_init(&iev_lde_sync
->ibuf
, pipe_parent2lde_sync
[0]);
399 iev_lde_sync
->handler_read
= main_dispatch_lde
;
400 iev_lde_sync
->ev_read
= NULL
;
401 thread_add_read(master
, iev_lde_sync
->handler_read
, iev_lde_sync
, iev_lde_sync
->ibuf
.fd
,
402 &iev_lde_sync
->ev_read
);
403 iev_lde_sync
->handler_write
= ldp_write_handler
;
405 if (main_imsg_send_ipc_sockets(&iev_ldpe
->ibuf
, &iev_lde
->ibuf
))
406 fatal("could not establish imsg links");
407 main_imsg_compose_both(IMSG_DEBUG_UPDATE
, &ldp_debug
,
409 main_imsg_compose_both(IMSG_INIT
, &init
, sizeof(init
));
410 main_imsg_send_config(ldpd_conf
);
412 if (ldpd_conf
->ipv4
.flags
& F_LDPD_AF_ENABLED
)
413 main_imsg_send_net_sockets(AF_INET
);
414 if (ldpd_conf
->ipv6
.flags
& F_LDPD_AF_ENABLED
)
415 main_imsg_send_net_sockets(AF_INET6
);
432 msgbuf_clear(&iev_ldpe
->ibuf
.w
);
433 close(iev_ldpe
->ibuf
.fd
);
434 msgbuf_clear(&iev_lde
->ibuf
.w
);
435 close(iev_lde
->ibuf
.fd
);
437 config_clear(ldpd_conf
);
439 ldp_config_reset(vty_conf
);
440 QOBJ_UNREG(vty_conf
);
443 log_debug("waiting for children to terminate");
446 /* Wait for child process. */
449 /* We got interrupted, try again. */
452 /* No more processes were found. */
456 /* Unhandled errno condition. */
461 /* We found something, lets announce it. */
462 if (WIFSIGNALED(status
))
463 log_warnx("%s terminated; signal %d",
464 (pid
== lde_pid
? "label decision engine"
468 /* Repeat until there are no more child processes. */
474 log_info("terminating");
485 start_child(enum ldpd_process p
, char *argv0
, int fd_async
, int fd_sync
)
488 int argc
= 0, nullfd
;
491 switch (pid
= fork()) {
493 fatal("cannot fork");
502 nullfd
= open("/dev/null", O_RDONLY
| O_NOCTTY
);
504 flog_err_sys(EC_LIB_SYSTEM_CALL
,
505 "%s: failed to open /dev/null: %s", __func__
,
506 safe_strerror(errno
));
514 if (dup2(fd_async
, LDPD_FD_ASYNC
) == -1)
515 fatal("cannot setup imsg async fd");
516 if (dup2(fd_sync
, LDPD_FD_SYNC
) == -1)
517 fatal("cannot setup imsg sync fd");
519 argv
[argc
++] = argv0
;
522 fatalx("Can not start main process");
523 case PROC_LDE_ENGINE
:
524 argv
[argc
++] = (char *)"-L";
526 case PROC_LDP_ENGINE
:
527 argv
[argc
++] = (char *)"-E";
539 main_dispatch_ldpe(struct thread
*thread
)
541 struct imsgev
*iev
= THREAD_ARG(thread
);
542 struct imsgbuf
*ibuf
= &iev
->ibuf
;
550 if ((n
= imsg_read(ibuf
)) == -1 && errno
!= EAGAIN
)
551 fatal("imsg_read error");
552 if (n
== 0) /* connection closed */
556 if ((n
= imsg_get(ibuf
, &imsg
)) == -1)
562 switch (imsg
.hdr
.type
) {
564 logit(imsg
.hdr
.pid
, "%s", (const char *)imsg
.data
);
566 case IMSG_REQUEST_SOCKETS
:
568 main_imsg_send_net_sockets(af
);
571 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
572 sizeof(struct acl_check
))
573 fatalx("IMSG_ACL_CHECK imsg with wrong len");
574 ldp_acl_reply(iev
, (struct acl_check
*)imsg
.data
);
577 log_debug("%s: error handling imsg %d", __func__
,
586 /* this pipe is dead, so remove the event handlers and exit */
587 THREAD_READ_OFF(iev
->ev_read
);
588 THREAD_WRITE_OFF(iev
->ev_write
);
593 kill(lde_pid
, SIGTERM
);
601 main_dispatch_lde(struct thread
*thread
)
603 struct imsgev
*iev
= THREAD_ARG(thread
);
604 struct imsgbuf
*ibuf
= &iev
->ibuf
;
611 if ((n
= imsg_read(ibuf
)) == -1 && errno
!= EAGAIN
)
612 fatal("imsg_read error");
613 if (n
== 0) /* connection closed */
617 if ((n
= imsg_get(ibuf
, &imsg
)) == -1)
623 switch (imsg
.hdr
.type
) {
625 logit(imsg
.hdr
.pid
, "%s", (const char *)imsg
.data
);
627 case IMSG_KLABEL_CHANGE
:
628 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
629 sizeof(struct kroute
))
630 fatalx("invalid size of IMSG_KLABEL_CHANGE");
631 if (kr_change(imsg
.data
))
632 log_warnx("%s: error changing route", __func__
);
634 case IMSG_KLABEL_DELETE
:
635 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
636 sizeof(struct kroute
))
637 fatalx("invalid size of IMSG_KLABEL_DELETE");
638 if (kr_delete(imsg
.data
))
639 log_warnx("%s: error deleting route", __func__
);
642 case IMSG_KPW_DELETE
:
645 if (imsg
.hdr
.len
- IMSG_HEADER_SIZE
!=
646 sizeof(struct zapi_pw
))
647 fatalx("invalid size of IMSG_KPWLABEL_CHANGE");
649 switch (imsg
.hdr
.type
) {
651 if (kmpw_add(imsg
.data
))
652 log_warnx("%s: error adding "
653 "pseudowire", __func__
);
655 case IMSG_KPW_DELETE
:
656 if (kmpw_del(imsg
.data
))
657 log_warnx("%s: error deleting "
658 "pseudowire", __func__
);
661 if (kmpw_set(imsg
.data
))
662 log_warnx("%s: error setting "
663 "pseudowire", __func__
);
666 if (kmpw_unset(imsg
.data
))
667 log_warnx("%s: error unsetting "
668 "pseudowire", __func__
);
673 if (imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+
674 sizeof(struct acl_check
))
675 fatalx("IMSG_ACL_CHECK imsg with wrong len");
676 ldp_acl_reply(iev
, (struct acl_check
*)imsg
.data
);
679 log_debug("%s: error handling imsg %d", __func__
,
688 /* this pipe is dead, so remove the event handlers and exit */
689 THREAD_READ_OFF(iev
->ev_read
);
690 THREAD_WRITE_OFF(iev
->ev_write
);
695 kill(ldpe_pid
, SIGTERM
);
703 ldp_write_handler(struct thread
*thread
)
705 struct imsgev
*iev
= THREAD_ARG(thread
);
706 struct imsgbuf
*ibuf
= &iev
->ibuf
;
709 iev
->ev_write
= NULL
;
711 if ((n
= msgbuf_write(&ibuf
->w
)) == -1 && errno
!= EAGAIN
)
712 fatal("msgbuf_write");
714 /* this pipe is dead, so remove the event handlers */
715 THREAD_READ_OFF(iev
->ev_read
);
716 THREAD_WRITE_OFF(iev
->ev_write
);
726 main_imsg_compose_ldpe(int type
, pid_t pid
, void *data
, uint16_t datalen
)
728 if (iev_ldpe
== NULL
)
730 imsg_compose_event(iev_ldpe
, type
, 0, pid
, -1, data
, datalen
);
734 main_imsg_compose_lde(int type
, pid_t pid
, void *data
, uint16_t datalen
)
736 imsg_compose_event(iev_lde
, type
, 0, pid
, -1, data
, datalen
);
740 main_imsg_compose_both(enum imsg_type type
, void *buf
, uint16_t len
)
742 if (iev_ldpe
== NULL
|| iev_lde
== NULL
)
744 if (imsg_compose_event(iev_ldpe
, type
, 0, 0, -1, buf
, len
) == -1)
746 if (imsg_compose_event(iev_lde
, type
, 0, 0, -1, buf
, len
) == -1)
752 imsg_event_add(struct imsgev
*iev
)
754 if (iev
->handler_read
)
755 thread_add_read(master
, iev
->handler_read
, iev
, iev
->ibuf
.fd
,
758 if (iev
->handler_write
&& iev
->ibuf
.w
.queued
)
759 thread_add_write(master
, iev
->handler_write
, iev
,
760 iev
->ibuf
.fd
, &iev
->ev_write
);
764 imsg_compose_event(struct imsgev
*iev
, uint16_t type
, uint32_t peerid
,
765 pid_t pid
, int fd
, void *data
, uint16_t datalen
)
769 if ((ret
= imsg_compose(&iev
->ibuf
, type
, peerid
,
770 pid
, fd
, data
, datalen
)) != -1)
776 evbuf_enqueue(struct evbuf
*eb
, struct ibuf
*buf
)
778 ibuf_close(&eb
->wbuf
, buf
);
783 evbuf_event_add(struct evbuf
*eb
)
786 thread_add_write(master
, eb
->handler
, eb
->arg
, eb
->wbuf
.fd
,
791 evbuf_init(struct evbuf
*eb
, int fd
, int (*handler
)(struct thread
*),
794 msgbuf_init(&eb
->wbuf
);
796 eb
->handler
= handler
;
801 evbuf_clear(struct evbuf
*eb
)
803 THREAD_WRITE_OFF(eb
->ev
);
804 msgbuf_clear(&eb
->wbuf
);
809 main_imsg_send_ipc_sockets(struct imsgbuf
*ldpe_buf
, struct imsgbuf
*lde_buf
)
811 int pipe_ldpe2lde
[2];
813 if (socketpair(AF_UNIX
, SOCK_STREAM
, PF_UNSPEC
, pipe_ldpe2lde
) == -1)
815 sock_set_nonblock(pipe_ldpe2lde
[0]);
816 sock_set_nonblock(pipe_ldpe2lde
[1]);
818 if (imsg_compose(ldpe_buf
, IMSG_SOCKET_IPC
, 0, 0, pipe_ldpe2lde
[0],
821 if (imsg_compose(lde_buf
, IMSG_SOCKET_IPC
, 0, 0, pipe_ldpe2lde
[1],
829 main_imsg_send_net_sockets(int af
)
831 if (!ldp_addrisset(af
, &(ldp_af_conf_get(ldpd_conf
, af
))->trans_addr
))
834 main_imsg_send_net_socket(af
, LDP_SOCKET_DISC
);
835 main_imsg_send_net_socket(af
, LDP_SOCKET_EDISC
);
836 main_imsg_send_net_socket(af
, LDP_SOCKET_SESSION
);
837 imsg_compose_event(iev_ldpe
, IMSG_SETUP_SOCKETS
, af
, 0, -1, NULL
, 0);
841 main_imsg_send_net_socket(int af
, enum socket_type type
)
845 fd
= ldp_create_socket(af
, type
);
847 log_warnx("%s: failed to create %s socket for address-family "
848 "%s", __func__
, socket_name(type
), af_name(af
));
852 imsg_compose_event(iev_ldpe
, IMSG_SOCKET_NET
, af
, 0, fd
, &type
,
857 ldp_acl_request(struct imsgev
*iev
, char *acl_name
, int af
,
858 union ldpd_addr
*addr
, uint8_t prefixlen
)
862 struct acl_check acl_check
;
864 if (acl_name
[0] == '\0')
865 return FILTER_PERMIT
;
868 strlcpy(acl_check
.acl
, acl_name
, sizeof(acl_check
.acl
));
870 acl_check
.addr
= *addr
;
871 acl_check
.prefixlen
= prefixlen
;
873 /* send (blocking) */
874 imsg_compose_event(iev
, IMSG_ACL_CHECK
, 0, 0, -1, &acl_check
,
876 imsg_flush(&iev
->ibuf
);
878 /* receive (blocking) and parse result */
879 if ((n
= imsg_read(&iev
->ibuf
)) == -1)
880 fatal("imsg_read error");
881 if ((n
= imsg_get(&iev
->ibuf
, &imsg
)) == -1)
883 if (imsg
.hdr
.type
!= IMSG_ACL_CHECK
||
884 imsg
.hdr
.len
!= IMSG_HEADER_SIZE
+ sizeof(int))
885 fatalx("ldp_acl_request: invalid response");
887 return (*((int *)imsg
.data
));
891 ldp_acl_reply(struct imsgev
*iev
, struct acl_check
*acl_check
)
893 struct access_list
*alist
;
894 struct prefix prefix
;
897 alist
= access_list_lookup(family2afi(acl_check
->af
), acl_check
->acl
);
899 result
= FILTER_DENY
;
901 prefix
.family
= acl_check
->af
;
902 switch (prefix
.family
) {
904 prefix
.u
.prefix4
= acl_check
->addr
.v4
;
907 prefix
.u
.prefix6
= acl_check
->addr
.v6
;
910 fatalx("ldp_acl_reply: unknown af");
912 prefix
.prefixlen
= acl_check
->prefixlen
;
913 result
= access_list_apply(alist
, &prefix
);
916 imsg_compose_event(iev
, IMSG_ACL_CHECK
, 0, 0, -1, &result
,
920 struct ldpd_af_conf
*
921 ldp_af_conf_get(struct ldpd_conf
*xconf
, int af
)
925 return (&xconf
->ipv4
);
927 return (&xconf
->ipv6
);
929 fatalx("ldp_af_conf_get: unknown af");
933 struct ldpd_af_global
*
934 ldp_af_global_get(struct ldpd_global
*xglobal
, int af
)
938 return (&xglobal
->ipv4
);
940 return (&xglobal
->ipv6
);
942 fatalx("ldp_af_global_get: unknown af");
947 ldp_is_dual_stack(struct ldpd_conf
*xconf
)
949 return ((xconf
->ipv4
.flags
& F_LDPD_AF_ENABLED
) &&
950 (xconf
->ipv6
.flags
& F_LDPD_AF_ENABLED
));
954 ldp_rtr_id_get(struct ldpd_conf
*xconf
)
956 if (xconf
->rtr_id
.s_addr
!= INADDR_ANY
)
957 return (xconf
->rtr_id
.s_addr
);
959 return (global
.rtr_id
.s_addr
);
963 main_imsg_send_config(struct ldpd_conf
*xconf
)
967 struct nbr_params
*nbrp
;
969 struct l2vpn_if
*lif
;
972 if (main_imsg_compose_both(IMSG_RECONF_CONF
, xconf
,
973 sizeof(*xconf
)) == -1)
976 RB_FOREACH(iface
, iface_head
, &xconf
->iface_tree
) {
977 if (main_imsg_compose_both(IMSG_RECONF_IFACE
, iface
,
978 sizeof(*iface
)) == -1)
982 RB_FOREACH(tnbr
, tnbr_head
, &xconf
->tnbr_tree
) {
983 if (main_imsg_compose_both(IMSG_RECONF_TNBR
, tnbr
,
984 sizeof(*tnbr
)) == -1)
988 RB_FOREACH(nbrp
, nbrp_head
, &xconf
->nbrp_tree
) {
989 if (main_imsg_compose_both(IMSG_RECONF_NBRP
, nbrp
,
990 sizeof(*nbrp
)) == -1)
994 RB_FOREACH(l2vpn
, l2vpn_head
, &xconf
->l2vpn_tree
) {
995 if (main_imsg_compose_both(IMSG_RECONF_L2VPN
, l2vpn
,
996 sizeof(*l2vpn
)) == -1)
999 RB_FOREACH(lif
, l2vpn_if_head
, &l2vpn
->if_tree
) {
1000 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IF
, lif
,
1001 sizeof(*lif
)) == -1)
1004 RB_FOREACH(pw
, l2vpn_pw_head
, &l2vpn
->pw_tree
) {
1005 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_PW
, pw
,
1009 RB_FOREACH(pw
, l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
) {
1010 if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IPW
, pw
,
1016 if (main_imsg_compose_both(IMSG_RECONF_END
, NULL
, 0) == -1)
1023 ldp_config_apply(struct vty
*vty
, struct ldpd_conf
*xconf
)
1026 * When reading from a configuration file (startup and sighup), we
1027 * call merge_config() only once after the whole config has been read.
1028 * This is the optimal and least disruptive way to update the running
1031 if (vty
&& vty
->type
== VTY_FILE
)
1034 ldp_config_normalize(xconf
);
1036 if (main_imsg_send_config(xconf
) == -1)
1039 merge_config(ldpd_conf
, xconf
);
1045 ldp_config_normalize(struct ldpd_conf
*xconf
)
1047 struct iface
*iface
, *itmp
;
1048 struct nbr_params
*nbrp
, *ntmp
;
1049 struct l2vpn
*l2vpn
;
1050 struct l2vpn_pw
*pw
, *ptmp
;
1052 if (!(xconf
->flags
& F_LDPD_ENABLED
))
1053 ldp_config_reset_main(xconf
);
1055 if (!(xconf
->ipv4
.flags
& F_LDPD_AF_ENABLED
))
1056 ldp_config_reset_af(xconf
, AF_INET
);
1057 if (!(xconf
->ipv6
.flags
& F_LDPD_AF_ENABLED
))
1058 ldp_config_reset_af(xconf
, AF_INET6
);
1060 RB_FOREACH_SAFE(iface
, iface_head
, &xconf
->iface_tree
, itmp
) {
1061 if (iface
->ipv4
.enabled
|| iface
->ipv6
.enabled
)
1065 RB_REMOVE(iface_head
, &vty_conf
->iface_tree
, iface
);
1069 RB_FOREACH_SAFE(nbrp
, nbrp_head
, &xconf
->nbrp_tree
, ntmp
) {
1070 if (nbrp
->flags
& (F_NBRP_KEEPALIVE
|F_NBRP_GTSM
))
1072 if (nbrp
->auth
.method
!= AUTH_NONE
)
1076 RB_REMOVE(nbrp_head
, &vty_conf
->nbrp_tree
, nbrp
);
1081 RB_FOREACH(l2vpn
, l2vpn_head
, &xconf
->l2vpn_tree
) {
1082 RB_FOREACH_SAFE(pw
, l2vpn_pw_head
, &l2vpn
->pw_tree
, ptmp
) {
1083 if (!(pw
->flags
& F_PW_STATIC_NBR_ADDR
)) {
1085 pw
->addr
.v4
= pw
->lsr_id
;
1088 if (pw
->lsr_id
.s_addr
!= INADDR_ANY
&& pw
->pwid
!= 0)
1090 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_tree
, pw
);
1091 RB_INSERT(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, pw
);
1093 RB_FOREACH_SAFE(pw
, l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
,
1095 if (!(pw
->flags
& F_PW_STATIC_NBR_ADDR
)) {
1097 pw
->addr
.v4
= pw
->lsr_id
;
1100 if (pw
->lsr_id
.s_addr
== INADDR_ANY
|| pw
->pwid
== 0)
1102 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, pw
);
1103 RB_INSERT(l2vpn_pw_head
, &l2vpn
->pw_tree
, pw
);
1109 ldp_config_reset(struct ldpd_conf
*conf
)
1111 ldp_config_reset_main(conf
);
1112 ldp_config_reset_l2vpns(conf
);
1116 ldp_config_reset_main(struct ldpd_conf
*conf
)
1118 struct iface
*iface
;
1119 struct nbr_params
*nbrp
;
1121 while (!RB_EMPTY(iface_head
, &conf
->iface_tree
)) {
1122 iface
= RB_ROOT(iface_head
, &conf
->iface_tree
);
1125 RB_REMOVE(iface_head
, &conf
->iface_tree
, iface
);
1129 while (!RB_EMPTY(nbrp_head
, &conf
->nbrp_tree
)) {
1130 nbrp
= RB_ROOT(nbrp_head
, &conf
->nbrp_tree
);
1133 RB_REMOVE(nbrp_head
, &conf
->nbrp_tree
, nbrp
);
1137 conf
->rtr_id
.s_addr
= INADDR_ANY
;
1138 ldp_config_reset_af(conf
, AF_INET
);
1139 ldp_config_reset_af(conf
, AF_INET6
);
1140 conf
->lhello_holdtime
= LINK_DFLT_HOLDTIME
;
1141 conf
->lhello_interval
= DEFAULT_HELLO_INTERVAL
;
1142 conf
->thello_holdtime
= TARGETED_DFLT_HOLDTIME
;
1143 conf
->thello_interval
= DEFAULT_HELLO_INTERVAL
;
1144 conf
->trans_pref
= DUAL_STACK_LDPOV6
;
1149 ldp_config_reset_af(struct ldpd_conf
*conf
, int af
)
1151 struct ldpd_af_conf
*af_conf
;
1152 struct iface
*iface
;
1153 struct iface_af
*ia
;
1154 struct tnbr
*tnbr
, *ttmp
;
1156 RB_FOREACH(iface
, iface_head
, &conf
->iface_tree
) {
1157 ia
= iface_af_get(iface
, af
);
1161 RB_FOREACH_SAFE(tnbr
, tnbr_head
, &conf
->tnbr_tree
, ttmp
) {
1166 RB_REMOVE(tnbr_head
, &conf
->tnbr_tree
, tnbr
);
1170 af_conf
= ldp_af_conf_get(conf
, af
);
1171 af_conf
->keepalive
= 180;
1172 af_conf
->lhello_holdtime
= 0;
1173 af_conf
->lhello_interval
= 0;
1174 af_conf
->thello_holdtime
= 0;
1175 af_conf
->thello_interval
= 0;
1176 memset(&af_conf
->trans_addr
, 0, sizeof(af_conf
->trans_addr
));
1181 ldp_config_reset_l2vpns(struct ldpd_conf
*conf
)
1183 struct l2vpn
*l2vpn
;
1184 struct l2vpn_if
*lif
;
1185 struct l2vpn_pw
*pw
;
1187 while (!RB_EMPTY(l2vpn_head
, &conf
->l2vpn_tree
)) {
1188 l2vpn
= RB_ROOT(l2vpn_head
, &conf
->l2vpn_tree
);
1189 while (!RB_EMPTY(l2vpn_if_head
, &l2vpn
->if_tree
)) {
1190 lif
= RB_ROOT(l2vpn_if_head
, &l2vpn
->if_tree
);
1193 RB_REMOVE(l2vpn_if_head
, &l2vpn
->if_tree
, lif
);
1196 while (!RB_EMPTY(l2vpn_pw_head
, &l2vpn
->pw_tree
)) {
1197 pw
= RB_ROOT(l2vpn_pw_head
, &l2vpn
->pw_tree
);
1200 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_tree
, pw
);
1203 while (!RB_EMPTY(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
)) {
1204 pw
= RB_ROOT(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
);
1207 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, pw
);
1211 RB_REMOVE(l2vpn_head
, &conf
->l2vpn_tree
, l2vpn
);
1217 ldp_clear_config(struct ldpd_conf
*xconf
)
1219 struct iface
*iface
;
1221 struct nbr_params
*nbrp
;
1222 struct l2vpn
*l2vpn
;
1224 while (!RB_EMPTY(iface_head
, &xconf
->iface_tree
)) {
1225 iface
= RB_ROOT(iface_head
, &xconf
->iface_tree
);
1227 RB_REMOVE(iface_head
, &xconf
->iface_tree
, iface
);
1230 while (!RB_EMPTY(tnbr_head
, &xconf
->tnbr_tree
)) {
1231 tnbr
= RB_ROOT(tnbr_head
, &xconf
->tnbr_tree
);
1233 RB_REMOVE(tnbr_head
, &xconf
->tnbr_tree
, tnbr
);
1236 while (!RB_EMPTY(nbrp_head
, &xconf
->nbrp_tree
)) {
1237 nbrp
= RB_ROOT(nbrp_head
, &xconf
->nbrp_tree
);
1239 RB_REMOVE(nbrp_head
, &xconf
->nbrp_tree
, nbrp
);
1242 while (!RB_EMPTY(l2vpn_head
, &xconf
->l2vpn_tree
)) {
1243 l2vpn
= RB_ROOT(l2vpn_head
, &xconf
->l2vpn_tree
);
1245 RB_REMOVE(l2vpn_head
, &xconf
->l2vpn_tree
, l2vpn
);
1252 #define COPY(a, b) do { \
1253 a = malloc(sizeof(*a)); \
1260 merge_config(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1262 merge_global(conf
, xconf
);
1263 merge_af(AF_INET
, &conf
->ipv4
, &xconf
->ipv4
);
1264 merge_af(AF_INET6
, &conf
->ipv6
, &xconf
->ipv6
);
1265 merge_ifaces(conf
, xconf
);
1266 merge_tnbrs(conf
, xconf
);
1267 merge_nbrps(conf
, xconf
);
1268 merge_l2vpns(conf
, xconf
);
1272 merge_global(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1274 /* change of router-id requires resetting all neighborships */
1275 if (conf
->rtr_id
.s_addr
!= xconf
->rtr_id
.s_addr
) {
1276 if (ldpd_process
== PROC_LDP_ENGINE
) {
1277 ldpe_reset_nbrs(AF_UNSPEC
);
1278 if (conf
->rtr_id
.s_addr
== INADDR_ANY
||
1279 xconf
->rtr_id
.s_addr
== INADDR_ANY
) {
1280 if_update_all(AF_UNSPEC
);
1281 tnbr_update_all(AF_UNSPEC
);
1284 conf
->rtr_id
= xconf
->rtr_id
;
1287 conf
->lhello_holdtime
= xconf
->lhello_holdtime
;
1288 conf
->lhello_interval
= xconf
->lhello_interval
;
1289 conf
->thello_holdtime
= xconf
->thello_holdtime
;
1290 conf
->thello_interval
= xconf
->thello_interval
;
1292 if (conf
->trans_pref
!= xconf
->trans_pref
) {
1293 if (ldpd_process
== PROC_LDP_ENGINE
)
1294 ldpe_reset_ds_nbrs();
1295 conf
->trans_pref
= xconf
->trans_pref
;
1298 if ((conf
->flags
& F_LDPD_DS_CISCO_INTEROP
) !=
1299 (xconf
->flags
& F_LDPD_DS_CISCO_INTEROP
)) {
1300 if (ldpd_process
== PROC_LDP_ENGINE
)
1301 ldpe_reset_ds_nbrs();
1304 conf
->flags
= xconf
->flags
;
1308 merge_af(int af
, struct ldpd_af_conf
*af_conf
, struct ldpd_af_conf
*xa
)
1310 int stop_init_backoff
= 0;
1311 int remove_dynamic_tnbrs
= 0;
1312 int change_egress_label
= 0;
1313 int reset_nbrs_ipv4
= 0;
1315 int update_sockets
= 0;
1318 if (af_conf
->keepalive
!= xa
->keepalive
) {
1319 af_conf
->keepalive
= xa
->keepalive
;
1320 stop_init_backoff
= 1;
1322 af_conf
->lhello_holdtime
= xa
->lhello_holdtime
;
1323 af_conf
->lhello_interval
= xa
->lhello_interval
;
1324 af_conf
->thello_holdtime
= xa
->thello_holdtime
;
1325 af_conf
->thello_interval
= xa
->thello_interval
;
1328 if ((af_conf
->flags
& F_LDPD_AF_THELLO_ACCEPT
) &&
1329 !(xa
->flags
& F_LDPD_AF_THELLO_ACCEPT
))
1330 remove_dynamic_tnbrs
= 1;
1331 if ((af_conf
->flags
& F_LDPD_AF_NO_GTSM
) !=
1332 (xa
->flags
& F_LDPD_AF_NO_GTSM
)) {
1334 /* need to set/unset IPV6_MINHOPCOUNT */
1337 /* for LDPv4 just resetting the neighbors is enough */
1338 reset_nbrs_ipv4
= 1;
1340 if ((af_conf
->flags
& F_LDPD_AF_EXPNULL
) !=
1341 (xa
->flags
& F_LDPD_AF_EXPNULL
))
1342 change_egress_label
= 1;
1343 af_conf
->flags
= xa
->flags
;
1345 /* update the transport address */
1346 if (ldp_addrcmp(af
, &af_conf
->trans_addr
, &xa
->trans_addr
)) {
1347 af_conf
->trans_addr
= xa
->trans_addr
;
1352 if (strcmp(af_conf
->acl_label_advertise_to
,
1353 xa
->acl_label_advertise_to
) ||
1354 strcmp(af_conf
->acl_label_advertise_for
,
1355 xa
->acl_label_advertise_for
) ||
1356 strcmp(af_conf
->acl_label_accept_from
,
1357 xa
->acl_label_accept_from
) ||
1358 strcmp(af_conf
->acl_label_accept_for
,
1359 xa
->acl_label_accept_for
))
1361 if (strcmp(af_conf
->acl_thello_accept_from
, xa
->acl_thello_accept_from
))
1362 remove_dynamic_tnbrs
= 1;
1363 if (strcmp(af_conf
->acl_label_expnull_for
, xa
->acl_label_expnull_for
))
1364 change_egress_label
= 1;
1365 strlcpy(af_conf
->acl_thello_accept_from
, xa
->acl_thello_accept_from
,
1366 sizeof(af_conf
->acl_thello_accept_from
));
1367 strlcpy(af_conf
->acl_label_allocate_for
, xa
->acl_label_allocate_for
,
1368 sizeof(af_conf
->acl_label_allocate_for
));
1369 strlcpy(af_conf
->acl_label_advertise_to
, xa
->acl_label_advertise_to
,
1370 sizeof(af_conf
->acl_label_advertise_to
));
1371 strlcpy(af_conf
->acl_label_advertise_for
, xa
->acl_label_advertise_for
,
1372 sizeof(af_conf
->acl_label_advertise_for
));
1373 strlcpy(af_conf
->acl_label_accept_from
, xa
->acl_label_accept_from
,
1374 sizeof(af_conf
->acl_label_accept_from
));
1375 strlcpy(af_conf
->acl_label_accept_for
, xa
->acl_label_accept_for
,
1376 sizeof(af_conf
->acl_label_accept_for
));
1377 strlcpy(af_conf
->acl_label_expnull_for
, xa
->acl_label_expnull_for
,
1378 sizeof(af_conf
->acl_label_expnull_for
));
1380 /* apply the new configuration */
1381 switch (ldpd_process
) {
1382 case PROC_LDE_ENGINE
:
1383 if (change_egress_label
)
1384 lde_change_egress_label(af
);
1386 case PROC_LDP_ENGINE
:
1387 if (stop_init_backoff
)
1388 ldpe_stop_init_backoff(af
);
1389 if (remove_dynamic_tnbrs
)
1390 ldpe_remove_dynamic_tnbrs(af
);
1392 ldpe_reset_nbrs(AF_UNSPEC
);
1393 else if (reset_nbrs_ipv4
)
1394 ldpe_reset_nbrs(AF_INET
);
1397 if (update_sockets
&& iev_ldpe
)
1398 imsg_compose_event(iev_ldpe
, IMSG_CLOSE_SOCKETS
, af
,
1405 merge_ifaces(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1407 struct iface
*iface
, *itmp
, *xi
;
1409 RB_FOREACH_SAFE(iface
, iface_head
, &conf
->iface_tree
, itmp
) {
1410 /* find deleted interfaces */
1411 if ((xi
= if_lookup_name(xconf
, iface
->name
)) == NULL
) {
1412 switch (ldpd_process
) {
1413 case PROC_LDP_ENGINE
:
1414 ldpe_if_exit(iface
);
1416 case PROC_LDE_ENGINE
:
1420 RB_REMOVE(iface_head
, &conf
->iface_tree
, iface
);
1424 RB_FOREACH_SAFE(xi
, iface_head
, &xconf
->iface_tree
, itmp
) {
1425 /* find new interfaces */
1426 if ((iface
= if_lookup_name(conf
, xi
->name
)) == NULL
) {
1428 RB_INSERT(iface_head
, &conf
->iface_tree
, iface
);
1430 switch (ldpd_process
) {
1431 case PROC_LDP_ENGINE
:
1432 ldpe_if_init(iface
);
1434 case PROC_LDE_ENGINE
:
1437 /* resend addresses to activate new interfaces */
1438 kif_redistribute(iface
->name
);
1444 /* update existing interfaces */
1445 merge_iface_af(&iface
->ipv4
, &xi
->ipv4
);
1446 merge_iface_af(&iface
->ipv6
, &xi
->ipv6
);
1451 merge_iface_af(struct iface_af
*ia
, struct iface_af
*xi
)
1453 if (ia
->enabled
!= xi
->enabled
) {
1454 ia
->enabled
= xi
->enabled
;
1455 if (ldpd_process
== PROC_LDP_ENGINE
)
1456 ldp_if_update(ia
->iface
, ia
->af
);
1458 ia
->hello_holdtime
= xi
->hello_holdtime
;
1459 ia
->hello_interval
= xi
->hello_interval
;
1463 merge_tnbrs(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1465 struct tnbr
*tnbr
, *ttmp
, *xt
;
1467 RB_FOREACH_SAFE(tnbr
, tnbr_head
, &conf
->tnbr_tree
, ttmp
) {
1468 if (!(tnbr
->flags
& F_TNBR_CONFIGURED
))
1471 /* find deleted tnbrs */
1472 if ((xt
= tnbr_find(xconf
, tnbr
->af
, &tnbr
->addr
)) == NULL
) {
1473 switch (ldpd_process
) {
1474 case PROC_LDP_ENGINE
:
1475 tnbr
->flags
&= ~F_TNBR_CONFIGURED
;
1476 tnbr_check(conf
, tnbr
);
1478 case PROC_LDE_ENGINE
:
1480 RB_REMOVE(tnbr_head
, &conf
->tnbr_tree
, tnbr
);
1486 RB_FOREACH_SAFE(xt
, tnbr_head
, &xconf
->tnbr_tree
, ttmp
) {
1487 /* find new tnbrs */
1488 if ((tnbr
= tnbr_find(conf
, xt
->af
, &xt
->addr
)) == NULL
) {
1490 RB_INSERT(tnbr_head
, &conf
->tnbr_tree
, tnbr
);
1492 switch (ldpd_process
) {
1493 case PROC_LDP_ENGINE
:
1496 case PROC_LDE_ENGINE
:
1503 /* update existing tnbrs */
1504 if (!(tnbr
->flags
& F_TNBR_CONFIGURED
))
1505 tnbr
->flags
|= F_TNBR_CONFIGURED
;
1510 merge_nbrps(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1512 struct nbr_params
*nbrp
, *ntmp
, *xn
;
1516 RB_FOREACH_SAFE(nbrp
, nbrp_head
, &conf
->nbrp_tree
, ntmp
) {
1517 /* find deleted nbrps */
1518 if ((xn
= nbr_params_find(xconf
, nbrp
->lsr_id
)) == NULL
) {
1519 switch (ldpd_process
) {
1520 case PROC_LDP_ENGINE
:
1521 nbr
= nbr_find_ldpid(nbrp
->lsr_id
.s_addr
);
1523 session_shutdown(nbr
, S_SHUTDOWN
, 0, 0);
1528 (ldp_af_global_get(&global
,
1529 nbr
->af
))->ldp_session_socket
,
1530 nbr
->af
, &nbr
->raddr
, NULL
);
1532 nbr
->auth
.method
= AUTH_NONE
;
1533 if (nbr_session_active_role(nbr
))
1534 nbr_establish_connection(nbr
);
1537 case PROC_LDE_ENGINE
:
1541 RB_REMOVE(nbrp_head
, &conf
->nbrp_tree
, nbrp
);
1545 RB_FOREACH_SAFE(xn
, nbrp_head
, &xconf
->nbrp_tree
, ntmp
) {
1546 /* find new nbrps */
1547 if ((nbrp
= nbr_params_find(conf
, xn
->lsr_id
)) == NULL
) {
1549 RB_INSERT(nbrp_head
, &conf
->nbrp_tree
, nbrp
);
1551 switch (ldpd_process
) {
1552 case PROC_LDP_ENGINE
:
1553 nbr
= nbr_find_ldpid(nbrp
->lsr_id
.s_addr
);
1555 session_shutdown(nbr
, S_SHUTDOWN
, 0, 0);
1556 nbr
->auth
.method
= nbrp
->auth
.method
;
1558 if (pfkey_establish(nbr
, nbrp
) == -1)
1559 fatalx("pfkey setup failed");
1562 (ldp_af_global_get(&global
,
1563 nbr
->af
))->ldp_session_socket
,
1564 nbr
->af
, &nbr
->raddr
,
1567 if (nbr_session_active_role(nbr
))
1568 nbr_establish_connection(nbr
);
1571 case PROC_LDE_ENGINE
:
1578 /* update existing nbrps */
1579 if (nbrp
->flags
!= xn
->flags
||
1580 nbrp
->keepalive
!= xn
->keepalive
||
1581 nbrp
->gtsm_enabled
!= xn
->gtsm_enabled
||
1582 nbrp
->gtsm_hops
!= xn
->gtsm_hops
||
1583 nbrp
->auth
.method
!= xn
->auth
.method
||
1584 strcmp(nbrp
->auth
.md5key
, xn
->auth
.md5key
) != 0)
1589 nbrp
->keepalive
= xn
->keepalive
;
1590 nbrp
->gtsm_enabled
= xn
->gtsm_enabled
;
1591 nbrp
->gtsm_hops
= xn
->gtsm_hops
;
1592 nbrp
->auth
.method
= xn
->auth
.method
;
1593 strlcpy(nbrp
->auth
.md5key
, xn
->auth
.md5key
,
1594 sizeof(nbrp
->auth
.md5key
));
1595 nbrp
->auth
.md5key_len
= xn
->auth
.md5key_len
;
1596 nbrp
->flags
= xn
->flags
;
1598 if (ldpd_process
== PROC_LDP_ENGINE
) {
1599 nbr
= nbr_find_ldpid(nbrp
->lsr_id
.s_addr
);
1600 if (nbr
&& nbrp_changed
) {
1601 session_shutdown(nbr
, S_SHUTDOWN
, 0, 0);
1604 nbr
->auth
.method
= nbrp
->auth
.method
;
1605 if (pfkey_establish(nbr
, nbrp
) == -1)
1606 fatalx("pfkey setup failed");
1608 nbr
->auth
.method
= nbrp
->auth
.method
;
1609 sock_set_md5sig((ldp_af_global_get(&global
,
1610 nbr
->af
))->ldp_session_socket
, nbr
->af
,
1611 &nbr
->raddr
, nbrp
->auth
.md5key
);
1613 if (nbr_session_active_role(nbr
))
1614 nbr_establish_connection(nbr
);
1621 merge_l2vpns(struct ldpd_conf
*conf
, struct ldpd_conf
*xconf
)
1623 struct l2vpn
*l2vpn
, *ltmp
, *xl
;
1625 RB_FOREACH_SAFE(l2vpn
, l2vpn_head
, &conf
->l2vpn_tree
, ltmp
) {
1626 /* find deleted l2vpns */
1627 if ((xl
= l2vpn_find(xconf
, l2vpn
->name
)) == NULL
) {
1628 switch (ldpd_process
) {
1629 case PROC_LDE_ENGINE
:
1632 case PROC_LDP_ENGINE
:
1633 ldpe_l2vpn_exit(l2vpn
);
1638 RB_REMOVE(l2vpn_head
, &conf
->l2vpn_tree
, l2vpn
);
1642 RB_FOREACH_SAFE(xl
, l2vpn_head
, &xconf
->l2vpn_tree
, ltmp
) {
1643 /* find new l2vpns */
1644 if ((l2vpn
= l2vpn_find(conf
, xl
->name
)) == NULL
) {
1646 RB_INSERT(l2vpn_head
, &conf
->l2vpn_tree
, l2vpn
);
1647 RB_INIT(l2vpn_if_head
, &l2vpn
->if_tree
);
1648 RB_INIT(l2vpn_pw_head
, &l2vpn
->pw_tree
);
1649 RB_INIT(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
);
1651 switch (ldpd_process
) {
1652 case PROC_LDE_ENGINE
:
1655 case PROC_LDP_ENGINE
:
1656 ldpe_l2vpn_init(l2vpn
);
1663 /* update existing l2vpns */
1664 merge_l2vpn(conf
, l2vpn
, xl
);
1669 merge_l2vpn(struct ldpd_conf
*xconf
, struct l2vpn
*l2vpn
, struct l2vpn
*xl
)
1671 struct l2vpn_if
*lif
, *ftmp
, *xf
;
1672 struct l2vpn_pw
*pw
, *ptmp
, *xp
;
1674 int reset_nbr
, reinstall_pwfec
, reinstall_tnbr
;
1675 int previous_pw_type
, previous_mtu
;
1677 previous_pw_type
= l2vpn
->pw_type
;
1678 previous_mtu
= l2vpn
->mtu
;
1680 /* merge intefaces */
1681 RB_FOREACH_SAFE(lif
, l2vpn_if_head
, &l2vpn
->if_tree
, ftmp
) {
1682 /* find deleted interfaces */
1683 if ((xf
= l2vpn_if_find(xl
, lif
->ifname
)) == NULL
) {
1684 RB_REMOVE(l2vpn_if_head
, &l2vpn
->if_tree
, lif
);
1688 RB_FOREACH_SAFE(xf
, l2vpn_if_head
, &xl
->if_tree
, ftmp
) {
1689 /* find new interfaces */
1690 if ((lif
= l2vpn_if_find(l2vpn
, xf
->ifname
)) == NULL
) {
1692 RB_INSERT(l2vpn_if_head
, &l2vpn
->if_tree
, lif
);
1695 switch (ldpd_process
) {
1696 case PROC_LDP_ENGINE
:
1697 case PROC_LDE_ENGINE
:
1700 kif_redistribute(lif
->ifname
);
1706 /* merge active pseudowires */
1707 RB_FOREACH_SAFE(pw
, l2vpn_pw_head
, &l2vpn
->pw_tree
, ptmp
) {
1708 /* find deleted active pseudowires */
1709 if ((xp
= l2vpn_pw_find_active(xl
, pw
->ifname
)) == NULL
) {
1710 switch (ldpd_process
) {
1711 case PROC_LDE_ENGINE
:
1714 case PROC_LDP_ENGINE
:
1715 ldpe_l2vpn_pw_exit(pw
);
1721 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_tree
, pw
);
1725 RB_FOREACH_SAFE(xp
, l2vpn_pw_head
, &xl
->pw_tree
, ptmp
) {
1726 /* find new active pseudowires */
1727 if ((pw
= l2vpn_pw_find_active(l2vpn
, xp
->ifname
)) == NULL
) {
1729 RB_INSERT(l2vpn_pw_head
, &l2vpn
->pw_tree
, pw
);
1732 switch (ldpd_process
) {
1733 case PROC_LDE_ENGINE
:
1736 case PROC_LDP_ENGINE
:
1737 ldpe_l2vpn_pw_init(pw
);
1740 kif_redistribute(pw
->ifname
);
1746 /* update existing active pseudowire */
1747 if (pw
->af
!= xp
->af
||
1748 ldp_addrcmp(pw
->af
, &pw
->addr
, &xp
->addr
))
1753 /* changes that require a session restart */
1754 if ((pw
->flags
& (F_PW_STATUSTLV_CONF
|F_PW_CWORD_CONF
)) !=
1755 (xp
->flags
& (F_PW_STATUSTLV_CONF
|F_PW_CWORD_CONF
)))
1760 if (l2vpn
->pw_type
!= xl
->pw_type
|| l2vpn
->mtu
!= xl
->mtu
||
1761 pw
->pwid
!= xp
->pwid
|| reinstall_tnbr
|| reset_nbr
||
1762 pw
->lsr_id
.s_addr
!= xp
->lsr_id
.s_addr
)
1763 reinstall_pwfec
= 1;
1765 reinstall_pwfec
= 0;
1767 if (ldpd_process
== PROC_LDP_ENGINE
) {
1769 ldpe_l2vpn_pw_exit(pw
);
1771 nbr
= nbr_find_ldpid(pw
->lsr_id
.s_addr
);
1772 if (nbr
&& nbr
->state
== NBR_STA_OPER
)
1773 session_shutdown(nbr
, S_SHUTDOWN
, 0, 0);
1776 if (ldpd_process
== PROC_LDE_ENGINE
&& reinstall_pwfec
)
1778 pw
->lsr_id
= xp
->lsr_id
;
1780 pw
->addr
= xp
->addr
;
1781 pw
->pwid
= xp
->pwid
;
1782 strlcpy(pw
->ifname
, xp
->ifname
, sizeof(pw
->ifname
));
1783 pw
->ifindex
= xp
->ifindex
;
1784 if (xp
->flags
& F_PW_CWORD_CONF
)
1785 pw
->flags
|= F_PW_CWORD_CONF
;
1787 pw
->flags
&= ~F_PW_CWORD_CONF
;
1788 if (xp
->flags
& F_PW_STATUSTLV_CONF
)
1789 pw
->flags
|= F_PW_STATUSTLV_CONF
;
1791 pw
->flags
&= ~F_PW_STATUSTLV_CONF
;
1792 if (xp
->flags
& F_PW_STATIC_NBR_ADDR
)
1793 pw
->flags
|= F_PW_STATIC_NBR_ADDR
;
1795 pw
->flags
&= ~F_PW_STATIC_NBR_ADDR
;
1796 if (ldpd_process
== PROC_LDP_ENGINE
&& reinstall_tnbr
)
1797 ldpe_l2vpn_pw_init(pw
);
1798 if (ldpd_process
== PROC_LDE_ENGINE
&& reinstall_pwfec
) {
1799 l2vpn
->pw_type
= xl
->pw_type
;
1800 l2vpn
->mtu
= xl
->mtu
;
1802 l2vpn
->pw_type
= previous_pw_type
;
1803 l2vpn
->mtu
= previous_mtu
;
1807 /* merge inactive pseudowires */
1808 RB_FOREACH_SAFE(pw
, l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, ptmp
) {
1809 /* find deleted inactive pseudowires */
1810 if ((xp
= l2vpn_pw_find_inactive(xl
, pw
->ifname
)) == NULL
) {
1811 RB_REMOVE(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, pw
);
1815 RB_FOREACH_SAFE(xp
, l2vpn_pw_head
, &xl
->pw_inactive_tree
, ptmp
) {
1816 /* find new inactive pseudowires */
1817 if ((pw
= l2vpn_pw_find_inactive(l2vpn
, xp
->ifname
)) == NULL
) {
1819 RB_INSERT(l2vpn_pw_head
, &l2vpn
->pw_inactive_tree
, pw
);
1822 switch (ldpd_process
) {
1823 case PROC_LDE_ENGINE
:
1824 case PROC_LDP_ENGINE
:
1827 kif_redistribute(pw
->ifname
);
1833 /* update existing inactive pseudowire */
1834 pw
->lsr_id
.s_addr
= xp
->lsr_id
.s_addr
;
1836 pw
->addr
= xp
->addr
;
1837 pw
->pwid
= xp
->pwid
;
1838 strlcpy(pw
->ifname
, xp
->ifname
, sizeof(pw
->ifname
));
1839 pw
->ifindex
= xp
->ifindex
;
1840 pw
->flags
= xp
->flags
;
1843 l2vpn
->pw_type
= xl
->pw_type
;
1844 l2vpn
->mtu
= xl
->mtu
;
1845 strlcpy(l2vpn
->br_ifname
, xl
->br_ifname
, sizeof(l2vpn
->br_ifname
));
1846 l2vpn
->br_ifindex
= xl
->br_ifindex
;
1850 config_new_empty(void)
1852 struct ldpd_conf
*xconf
;
1854 xconf
= calloc(1, sizeof(*xconf
));
1858 RB_INIT(iface_head
, &xconf
->iface_tree
);
1859 RB_INIT(tnbr_head
, &xconf
->tnbr_tree
);
1860 RB_INIT(nbrp_head
, &xconf
->nbrp_tree
);
1861 RB_INIT(l2vpn_head
, &xconf
->l2vpn_tree
);
1863 /* set default values */
1864 ldp_config_reset(xconf
);
1870 config_clear(struct ldpd_conf
*conf
)
1872 struct ldpd_conf
*xconf
;
1875 * Merge current config with an empty config, this will deactivate
1876 * and deallocate all the interfaces, pseudowires and so on. Before
1877 * merging, copy the router-id and other variables to avoid some
1878 * unnecessary operations, like trying to reset the neighborships.
1880 xconf
= config_new_empty();
1881 xconf
->ipv4
= conf
->ipv4
;
1882 xconf
->ipv6
= conf
->ipv6
;
1883 xconf
->rtr_id
= conf
->rtr_id
;
1884 xconf
->trans_pref
= conf
->trans_pref
;
1885 xconf
->flags
= conf
->flags
;
1886 merge_config(conf
, xconf
);