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1 | /* | |
2 | * IS-IS Rout(e)ing protocol - isis_main.c | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
5 | * Tampere University of Technology | |
6 | * Institute of Communications Engineering | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public Licenseas published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful,but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "getopt.h" | |
26 | #include "thread.h" | |
27 | #include "log.h" | |
28 | #include <lib/version.h> | |
29 | #include "command.h" | |
30 | #include "vty.h" | |
31 | #include "memory.h" | |
32 | #include "stream.h" | |
33 | #include "if.h" | |
34 | #include "privs.h" | |
35 | #include "sigevent.h" | |
36 | #include "filter.h" | |
37 | #include "plist.h" | |
38 | #include "zclient.h" | |
39 | #include "vrf.h" | |
40 | #include "qobj.h" | |
41 | #include "libfrr.h" | |
42 | ||
43 | #include "isisd/isis_constants.h" | |
44 | #include "isisd/isis_common.h" | |
45 | #include "isisd/isis_flags.h" | |
46 | #include "isisd/isis_circuit.h" | |
47 | #include "isisd/isisd.h" | |
48 | #include "isisd/isis_dynhn.h" | |
49 | #include "isisd/isis_spf.h" | |
50 | #include "isisd/isis_route.h" | |
51 | #include "isisd/isis_routemap.h" | |
52 | #include "isisd/isis_zebra.h" | |
53 | #include "isisd/isis_te.h" | |
54 | #include "isisd/isis_errors.h" | |
55 | #include "isisd/isis_bfd.h" | |
56 | #include "isisd/isis_lsp.h" | |
57 | #include "isisd/isis_mt.h" | |
58 | #include "isisd/fabricd.h" | |
59 | #include "isisd/isis_nb.h" | |
60 | ||
61 | /* Default configuration file name */ | |
62 | #define ISISD_DEFAULT_CONFIG "isisd.conf" | |
63 | /* Default vty port */ | |
64 | #define ISISD_VTY_PORT 2608 | |
65 | #define FABRICD_VTY_PORT 2618 | |
66 | ||
67 | /* isisd privileges */ | |
68 | zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND}; | |
69 | ||
70 | struct zebra_privs_t isisd_privs = { | |
71 | #if defined(FRR_USER) | |
72 | .user = FRR_USER, | |
73 | #endif | |
74 | #if defined FRR_GROUP | |
75 | .group = FRR_GROUP, | |
76 | #endif | |
77 | #ifdef VTY_GROUP | |
78 | .vty_group = VTY_GROUP, | |
79 | #endif | |
80 | .caps_p = _caps_p, | |
81 | .cap_num_p = array_size(_caps_p), | |
82 | .cap_num_i = 0}; | |
83 | ||
84 | /* isisd options */ | |
85 | struct option longopts[] = {{0}}; | |
86 | ||
87 | /* Master of threads. */ | |
88 | struct thread_master *master; | |
89 | ||
90 | /* | |
91 | * Prototypes. | |
92 | */ | |
93 | void sighup(void); | |
94 | void sigint(void); | |
95 | void sigterm(void); | |
96 | void sigusr1(void); | |
97 | ||
98 | ||
99 | static __attribute__((__noreturn__)) void terminate(int i) | |
100 | { | |
101 | isis_zebra_stop(); | |
102 | exit(i); | |
103 | } | |
104 | ||
105 | /* | |
106 | * Signal handlers | |
107 | */ | |
108 | #ifdef FABRICD | |
109 | void sighup(void) | |
110 | { | |
111 | zlog_notice("SIGHUP/reload is not implemented for fabricd"); | |
112 | return; | |
113 | } | |
114 | #else | |
115 | static struct frr_daemon_info isisd_di; | |
116 | void sighup(void) | |
117 | { | |
118 | zlog_info("SIGHUP received"); | |
119 | ||
120 | /* Reload config file. */ | |
121 | vty_read_config(NULL, isisd_di.config_file, config_default); | |
122 | } | |
123 | ||
124 | #endif | |
125 | ||
126 | __attribute__((__noreturn__)) void sigint(void) | |
127 | { | |
128 | zlog_notice("Terminating on signal SIGINT"); | |
129 | terminate(0); | |
130 | } | |
131 | ||
132 | __attribute__((__noreturn__)) void sigterm(void) | |
133 | { | |
134 | zlog_notice("Terminating on signal SIGTERM"); | |
135 | terminate(0); | |
136 | } | |
137 | ||
138 | void sigusr1(void) | |
139 | { | |
140 | zlog_debug("SIGUSR1 received"); | |
141 | zlog_rotate(); | |
142 | } | |
143 | ||
144 | struct quagga_signal_t isisd_signals[] = { | |
145 | { | |
146 | .signal = SIGHUP, | |
147 | .handler = &sighup, | |
148 | }, | |
149 | { | |
150 | .signal = SIGUSR1, | |
151 | .handler = &sigusr1, | |
152 | }, | |
153 | { | |
154 | .signal = SIGINT, | |
155 | .handler = &sigint, | |
156 | }, | |
157 | { | |
158 | .signal = SIGTERM, | |
159 | .handler = &sigterm, | |
160 | }, | |
161 | }; | |
162 | ||
163 | ||
164 | static const struct frr_yang_module_info *const isisd_yang_modules[] = { | |
165 | &frr_interface_info, | |
166 | #ifndef FABRICD | |
167 | &frr_isisd_info, | |
168 | #endif /* ifndef FABRICD */ | |
169 | }; | |
170 | ||
171 | #ifdef FABRICD | |
172 | FRR_DAEMON_INFO(fabricd, OPEN_FABRIC, .vty_port = FABRICD_VTY_PORT, | |
173 | ||
174 | .proghelp = "Implementation of the OpenFabric routing protocol.", | |
175 | #else | |
176 | FRR_DAEMON_INFO(isisd, ISIS, .vty_port = ISISD_VTY_PORT, | |
177 | ||
178 | .proghelp = "Implementation of the IS-IS routing protocol.", | |
179 | #endif | |
180 | .copyright = | |
181 | "Copyright (c) 2001-2002 Sampo Saaristo," | |
182 | " Ofer Wald and Hannes Gredler", | |
183 | ||
184 | .signals = isisd_signals, | |
185 | .n_signals = array_size(isisd_signals), | |
186 | ||
187 | .privs = &isisd_privs, .yang_modules = isisd_yang_modules, | |
188 | .n_yang_modules = array_size(isisd_yang_modules), ) | |
189 | ||
190 | /* | |
191 | * Main routine of isisd. Parse arguments and handle IS-IS state machine. | |
192 | */ | |
193 | int main(int argc, char **argv, char **envp) | |
194 | { | |
195 | int opt; | |
196 | ||
197 | #ifdef FABRICD | |
198 | frr_preinit(&fabricd_di, argc, argv); | |
199 | #else | |
200 | frr_preinit(&isisd_di, argc, argv); | |
201 | #endif | |
202 | frr_opt_add("", longopts, ""); | |
203 | ||
204 | /* Command line argument treatment. */ | |
205 | while (1) { | |
206 | opt = frr_getopt(argc, argv, NULL); | |
207 | ||
208 | if (opt == EOF) | |
209 | break; | |
210 | ||
211 | switch (opt) { | |
212 | case 0: | |
213 | break; | |
214 | default: | |
215 | frr_help_exit(1); | |
216 | break; | |
217 | } | |
218 | } | |
219 | ||
220 | /* thread master */ | |
221 | master = frr_init(); | |
222 | ||
223 | /* | |
224 | * initializations | |
225 | */ | |
226 | isis_error_init(); | |
227 | access_list_init(); | |
228 | vrf_init(NULL, NULL, NULL, NULL, NULL); | |
229 | prefix_list_init(); | |
230 | isis_init(); | |
231 | isis_circuit_init(); | |
232 | #ifdef FABRICD | |
233 | isis_vty_daemon_init(); | |
234 | #endif /* FABRICD */ | |
235 | #ifndef FABRICD | |
236 | isis_cli_init(); | |
237 | #endif /* ifdef FABRICD */ | |
238 | isis_spf_cmds_init(); | |
239 | isis_redist_init(); | |
240 | isis_route_map_init(); | |
241 | isis_mpls_te_init(); | |
242 | lsp_init(); | |
243 | mt_init(); | |
244 | ||
245 | /* create the global 'isis' instance */ | |
246 | isis_new(1, VRF_DEFAULT); | |
247 | ||
248 | isis_zebra_init(master); | |
249 | isis_bfd_init(); | |
250 | fabricd_init(); | |
251 | ||
252 | frr_config_fork(); | |
253 | frr_run(master); | |
254 | ||
255 | /* Not reached. */ | |
256 | exit(0); | |
257 | } |