isisd/isis_main.c

   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 "memory_vty.h"
  33 #include "stream.h"
  34 #include "if.h"
  35 #include "privs.h"
  36 #include "sigevent.h"
  37 #include "filter.h"
  38 #include "plist.h"
  39 #include "zclient.h"
  40 #include "vrf.h"
  41 #include "qobj.h"
  42 #include "libfrr.h"
  43
  44 #include "isisd/dict.h"
  45 #include "isisd/isis_constants.h"
  46 #include "isisd/isis_common.h"
  47 #include "isisd/isis_flags.h"
  48 #include "isisd/isis_circuit.h"
  49 #include "isisd/isisd.h"
  50 #include "isisd/isis_dynhn.h"
  51 #include "isisd/isis_spf.h"
  52 #include "isisd/isis_route.h"
  53 #include "isisd/isis_routemap.h"
  54 #include "isisd/isis_zebra.h"
  55 #include "isisd/isis_te.h"
  56 #include "isisd/isis_errors.h"
  57 #include "isisd/isis_vty_common.h"
  58 #include "isisd/isis_bfd.h"
  59 #include "isisd/isis_lsp.h"
  60 #include "isisd/isis_mt.h"
  61 #include "isisd/fabricd.h"
  62
  63 /* Default configuration file name */
  64 #define ISISD_DEFAULT_CONFIG "isisd.conf"
  65 /* Default vty port */
  66 #define ISISD_VTY_PORT       2608
  67 #define FABRICD_VTY_PORT     2618
  68
  69 /* isisd privileges */
  70 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND};
  71
  72 struct zebra_privs_t isisd_privs = {
  73 #if defined(FRR_USER)
  74         .user = FRR_USER,
  75 #endif
  76 #if defined FRR_GROUP
  77         .group = FRR_GROUP,
  78 #endif
  79 #ifdef VTY_GROUP
  80         .vty_group = VTY_GROUP,
  81 #endif
  82         .caps_p = _caps_p,
  83         .cap_num_p = sizeof(_caps_p) / sizeof(*_caps_p),
  84         .cap_num_i = 0};
  85
  86 /* isisd options */
  87 struct option longopts[] = {{0}};
  88
  89 /* Master of threads. */
  90 struct thread_master *master;
  91
  92 /*
  93  * Prototypes.
  94  */
  95 void sighup(void);
  96 void sigint(void);
  97 void sigterm(void);
  98 void sigusr1(void);
  99
 100
 101 static __attribute__((__noreturn__)) void terminate(int i)
 102 {
 103         isis_zebra_stop();
 104         exit(i);
 105 }
 106
 107 /*
 108  * Signal handlers
 109  */
 110
 111 void sighup(void)
 112 {
 113         zlog_notice("SIGHUP/reload is not implemented for isisd");
 114         return;
 115 }
 116
 117 __attribute__((__noreturn__)) void sigint(void)
 118 {
 119         zlog_notice("Terminating on signal SIGINT");
 120         terminate(0);
 121 }
 122
 123 __attribute__((__noreturn__)) void sigterm(void)
 124 {
 125         zlog_notice("Terminating on signal SIGTERM");
 126         terminate(0);
 127 }
 128
 129 void sigusr1(void)
 130 {
 131         zlog_debug("SIGUSR1 received");
 132         zlog_rotate();
 133 }
 134
 135 struct quagga_signal_t isisd_signals[] = {
 136         {
 137                 .signal = SIGHUP,
 138                 .handler = &sighup,
 139         },
 140         {
 141                 .signal = SIGUSR1,
 142                 .handler = &sigusr1,
 143         },
 144         {
 145                 .signal = SIGINT,
 146                 .handler = &sigint,
 147         },
 148         {
 149                 .signal = SIGTERM,
 150                 .handler = &sigterm,
 151         },
 152 };
 153
 154 static const struct frr_yang_module_info *isisd_yang_modules[] = {
 155         &frr_interface_info,
 156 };
 157
 158 #ifdef FABRICD
 159 FRR_DAEMON_INFO(fabricd, OPEN_FABRIC, .vty_port = FABRICD_VTY_PORT,
 160
 161                 .proghelp = "Implementation of the OpenFabric routing protocol.",
 162 #else
 163 FRR_DAEMON_INFO(isisd, ISIS, .vty_port = ISISD_VTY_PORT,
 164
 165                 .proghelp = "Implementation of the IS-IS routing protocol.",
 166 #endif
 167                 .copyright =
 168                         "Copyright (c) 2001-2002 Sampo Saaristo,"
 169                         " Ofer Wald and Hannes Gredler",
 170
 171                 .signals = isisd_signals,
 172                 .n_signals = array_size(isisd_signals),
 173
 174                 .privs = &isisd_privs, .yang_modules = isisd_yang_modules,
 175                 .n_yang_modules = array_size(isisd_yang_modules), )
 176
 177 /*
 178  * Main routine of isisd. Parse arguments and handle IS-IS state machine.
 179  */
 180 int main(int argc, char **argv, char **envp)
 181 {
 182         int opt;
 183
 184 #ifdef FABRICD
 185         frr_preinit(&fabricd_di, argc, argv);
 186 #else
 187         frr_preinit(&isisd_di, argc, argv);
 188 #endif
 189         frr_opt_add("", longopts, "");
 190
 191         /* Command line argument treatment. */
 192         while (1) {
 193                 opt = frr_getopt(argc, argv, NULL);
 194
 195                 if (opt == EOF)
 196                         break;
 197
 198                 switch (opt) {
 199                 case 0:
 200                         break;
 201                 default:
 202                         frr_help_exit(1);
 203                         break;
 204                 }
 205         }
 206
 207         /* thread master */
 208         master = frr_init();
 209
 210         /*
 211          *  initializations
 212          */
 213         isis_error_init();
 214         access_list_init();
 215         vrf_init(NULL, NULL, NULL, NULL, NULL);
 216         prefix_list_init();
 217         isis_init();
 218         isis_circuit_init();
 219         isis_vty_init();
 220         isis_spf_cmds_init();
 221         isis_redist_init();
 222         isis_route_map_init();
 223         isis_mpls_te_init();
 224         lsp_init();
 225         mt_init();
 226
 227         /* create the global 'isis' instance */
 228         isis_new(1);
 229
 230         isis_zebra_init(master);
 231         isis_bfd_init();
 232         fabricd_init();
 233
 234         frr_config_fork();
 235         frr_run(master);
 236
 237         /* Not reached. */
 238         exit(0);
 239 }