1 /* zebra daemon main routine.
2 * Copyright (C) 1997, 98 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <lib/version.h>
29 #include "zebra_memory.h"
30 #include "memory_vty.h"
39 #include "zebra/rib.h"
40 #include "zebra/zserv.h"
41 #include "zebra/debug.h"
42 #include "zebra/router-id.h"
43 #include "zebra/irdp.h"
44 #include "zebra/rtadv.h"
45 #include "zebra/zebra_ptm.h"
46 #include "zebra/zebra_ns.h"
47 #include "zebra/redistribute.h"
48 #include "zebra/zebra_mpls.h"
49 #include "zebra/label_manager.h"
51 #define ZEBRA_PTM_SUPPORT
54 struct zebra_t zebrad
= {
55 .rtm_table_default
= 0,
56 .packets_to_process
= ZEBRA_ZAPI_PACKETS_TO_PROCESS
,
62 /* Pacify zclient.o in libfrr, which expects this variable. */
63 struct thread_master
*master
;
65 /* Route retain mode flag. */
68 /* Allow non-quagga entities to delete quagga routes */
71 /* Don't delete kernel route. */
72 int keep_kernel_mode
= 0;
75 /* Receive buffer size for netlink socket */
76 u_int32_t nl_rcvbufsize
= 4194304;
77 #endif /* HAVE_NETLINK */
79 /* Command line options. */
80 struct option longopts
[] = {{"batch", no_argument
, NULL
, 'b'},
81 {"allow_delete", no_argument
, NULL
, 'a'},
82 {"keep_kernel", no_argument
, NULL
, 'k'},
83 {"socket", required_argument
, NULL
, 'z'},
84 {"ecmp", required_argument
, NULL
, 'e'},
85 {"label_socket", no_argument
, NULL
, 'l'},
86 {"retain", no_argument
, NULL
, 'r'},
88 {"nl-bufsize", required_argument
, NULL
, 's'},
89 #endif /* HAVE_NETLINK */
92 zebra_capabilities_t _caps_p
[] = {
93 ZCAP_NET_ADMIN
, ZCAP_SYS_ADMIN
, ZCAP_NET_RAW
,
96 /* zebra privileges to run with */
97 struct zebra_privs_t zserv_privs
= {
98 #if defined(FRR_USER) && defined(FRR_GROUP)
103 .vty_group
= VTY_GROUP
,
106 .cap_num_p
= array_size(_caps_p
),
109 unsigned int multipath_num
= MULTIPATH_NUM
;
111 /* SIGHUP handler. */
112 static void sighup(void)
114 zlog_info("SIGHUP received");
116 /* Reload of config file. */
120 /* SIGINT handler. */
121 static void sigint(void)
124 struct zebra_vrf
*zvrf
;
125 struct zebra_ns
*zns
;
127 zlog_notice("Terminating on signal");
131 list_delete_all_node(zebrad
.client_list
);
135 RB_FOREACH (vrf
, vrf_name_head
, &vrfs_by_name
) {
138 SET_FLAG(zvrf
->flags
, ZEBRA_VRF_RETAIN
);
142 zns
= zebra_ns_lookup(NS_DEFAULT
);
143 zebra_ns_disable(0, (void **)&zns
);
149 list_delete_and_null(&zebrad
.client_list
);
150 work_queue_free(zebrad
.ribq
);
151 if (zebrad
.lsp_process_q
)
152 work_queue_free(zebrad
.lsp_process_q
);
153 meta_queue_free(zebrad
.mq
);
159 /* SIGUSR1 handler. */
160 static void sigusr1(void)
165 struct quagga_signal_t zebra_signals
[] = {
185 zebra
, ZEBRA
, .vty_port
= ZEBRA_VTY_PORT
, .flags
= FRR_NO_ZCLIENT
,
188 "Daemon which manages kernel routing table management "
189 "and\nredistribution between different routing protocols.",
191 .signals
= zebra_signals
, .n_signals
= array_size(zebra_signals
),
193 .privs
= &zserv_privs
, )
195 /* Main startup routine. */
196 int main(int argc
, char **argv
)
198 // int batch_mode = 0;
199 char *zserv_path
= NULL
;
200 /* Socket to external label manager */
201 char *lblmgr_path
= NULL
;
202 struct sockaddr_storage dummy
;
204 #if defined(HANDLE_ZAPI_FUZZING)
205 char *fuzzing
= NULL
;
208 frr_preinit(&zebra_di
, argc
, argv
);
215 #if defined(HANDLE_ZAPI_FUZZING)
220 " -b, --batch Runs in batch mode\n"
221 " -a, --allow_delete Allow other processes to delete zebra routes\n"
222 " -z, --socket Set path of zebra socket\n"
223 " -e, --ecmp Specify ECMP to use.\n"
224 " -l, --label_socket Socket to external label manager\n"
225 " -k, --keep_kernel Don't delete old routes which installed by zebra.\n"
226 " -r, --retain When program terminates, retain added route by zebra.\n"
228 " -s, --nl-bufsize Set netlink receive buffer size\n"
229 #endif /* HAVE_NETLINK */
230 #if defined(HANDLE_ZAPI_FUZZING)
231 " -c <file> Bypass normal startup use this file for tetsting of zapi"
236 int opt
= frr_getopt(argc
, argv
, NULL
);
251 keep_kernel_mode
= 1;
254 multipath_num
= atoi(optarg
);
255 if (multipath_num
> MULTIPATH_NUM
256 || multipath_num
<= 0) {
258 "Multipath Number specified must be less than %d and greater than 0",
265 if (!frr_zclient_addr(&dummy
, &dummylen
, optarg
)) {
267 "Invalid zserv socket path: %s\n",
273 lblmgr_path
= optarg
;
280 nl_rcvbufsize
= atoi(optarg
);
282 #endif /* HAVE_NETLINK */
283 #if defined(HANDLE_ZAPI_FUZZING)
294 vty_config_lockless();
295 zebrad
.master
= frr_init();
297 /* Zebra related initialize. */
302 router_id_cmd_init();
305 #if defined(HAVE_RTADV)
309 #ifdef ZEBRA_PTM_SUPPORT
314 zebra_mpls_vty_init();
317 /* For debug purpose. */
318 /* SET_FLAG (zebra_debug_event, ZEBRA_DEBUG_EVENT); */
320 /* Initialize NS( and implicitly the VRF module), and make kernel
325 * Initialize show/config command after the vrf initialization is
330 #if defined(HANDLE_ZAPI_FUZZING)
332 zserv_read_file(fuzzing
);
337 /* Process the configuration file. Among other configuration
338 * directives we can meet those installing static routes. Such
339 * requests will not be executed immediately, but queued in
340 * zebra->ribq structure until we enter the main execution loop.
341 * The notifications from kernel will show originating PID equal
342 * to that after daemon() completes (if ever called).
346 /* Clean up rib -- before fork (?) */
347 /* rib_weed_tables (); */
349 /* After we have successfully acquired the pidfile, we can be sure
350 * about being the only copy of zebra process, which is submitting
351 * changes to the FIB.
352 * Clean up zebra-originated routes. The requests will be sent to OS
353 * immediately, so originating PID in notifications from kernel
354 * will be equal to the current getpid(). To know about such routes,
355 * we have to have route_read() called before.
357 if (!keep_kernel_mode
)
360 /* Needed for BSD routing socket. */
363 /* This must be done only after locking pidfile (bug #403). */
364 zebra_zserv_socket_init(zserv_path
);
366 /* Init label manager */
367 label_manager_init(lblmgr_path
);
369 frr_run(zebrad
.master
);