vswitchd/ovs-vswitchd.c

   1 /* Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #include <config.h>
  17
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <limits.h>
  22 #include <signal.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #ifdef HAVE_MLOCKALL
  26 #include <sys/mman.h>
  27 #endif
  28
  29 #include "bridge.h"
  30 #include "command-line.h"
  31 #include "compiler.h"
  32 #include "daemon.h"
  33 #include "dummy.h"
  34 #include "leak-checker.h"
  35 #include "netdev.h"
  36 #include "ovsdb-idl.h"
  37 #include "poll-loop.h"
  38 #include "process.h"
  39 #include "signals.h"
  40 #include "stream-ssl.h"
  41 #include "stream.h"
  42 #include "stress.h"
  43 #include "svec.h"
  44 #include "timeval.h"
  45 #include "unixctl.h"
  46 #include "util.h"
  47 #include "vconn.h"
  48 #include "vlog.h"
  49 #include "vswitchd/vswitch-idl.h"
  50
  51 VLOG_DEFINE_THIS_MODULE(vswitchd);
  52
  53 static unixctl_cb_func ovs_vswitchd_exit;
  54
  55 static const char *parse_options(int argc, char *argv[]);
  56 static void usage(void) NO_RETURN;
  57
  58 int
  59 main(int argc, char *argv[])
  60 {
  61     struct unixctl_server *unixctl;
  62     struct signal *sighup;
  63     const char *remote;
  64     bool exiting;
  65     int retval;
  66
  67     proctitle_init(argc, argv);
  68     set_program_name(argv[0]);
  69     stress_init_command();
  70     remote = parse_options(argc, argv);
  71     signal(SIGPIPE, SIG_IGN);
  72     sighup = signal_register(SIGHUP);
  73     process_init();
  74     ovsrec_init();
  75
  76     daemonize_start();
  77
  78     retval = unixctl_server_create(NULL, &unixctl);
  79     if (retval) {
  80         exit(EXIT_FAILURE);
  81     }
  82     unixctl_command_register("exit", ovs_vswitchd_exit, &exiting);
  83
  84     bridge_init(remote);
  85     exiting = false;
  86     while (!exiting) {
  87         if (signal_poll(sighup)) {
  88             vlog_reopen_log_file();
  89         }
  90         bridge_run();
  91         unixctl_server_run(unixctl);
  92         netdev_run();
  93
  94         signal_wait(sighup);
  95         bridge_wait();
  96         unixctl_server_wait(unixctl);
  97         netdev_wait();
  98         if (exiting) {
  99             poll_immediate_wake();
 100         }
 101         poll_block();
 102     }
 103     bridge_exit();
 104     unixctl_server_destroy(unixctl);
 105
 106     return 0;
 107 }
 108
 109 static const char *
 110 parse_options(int argc, char *argv[])
 111 {
 112     enum {
 113         OPT_PEER_CA_CERT = UCHAR_MAX + 1,
 114         OPT_MLOCKALL,
 115         VLOG_OPTION_ENUMS,
 116         LEAK_CHECKER_OPTION_ENUMS,
 117         OPT_BOOTSTRAP_CA_CERT,
 118         OPT_ENABLE_DUMMY,
 119         DAEMON_OPTION_ENUMS
 120     };
 121     static struct option long_options[] = {
 122         {"help",        no_argument, 0, 'h'},
 123         {"version",     no_argument, 0, 'V'},
 124         {"mlockall",    no_argument, 0, OPT_MLOCKALL},
 125         DAEMON_LONG_OPTIONS,
 126         VLOG_LONG_OPTIONS,
 127         LEAK_CHECKER_LONG_OPTIONS,
 128 #ifdef HAVE_OPENSSL
 129         STREAM_SSL_LONG_OPTIONS
 130         {"peer-ca-cert", required_argument, 0, OPT_PEER_CA_CERT},
 131         {"bootstrap-ca-cert", required_argument, 0, OPT_BOOTSTRAP_CA_CERT},
 132 #endif
 133         {"enable-dummy", no_argument, 0, OPT_ENABLE_DUMMY},
 134         {0, 0, 0, 0},
 135     };
 136     char *short_options = long_options_to_short_options(long_options);
 137
 138     for (;;) {
 139         int c;
 140
 141         c = getopt_long(argc, argv, short_options, long_options, NULL);
 142         if (c == -1) {
 143             break;
 144         }
 145
 146         switch (c) {
 147         case 'H':
 148         case 'h':
 149             usage();
 150
 151         case 'V':
 152             OVS_PRINT_VERSION(OFP_VERSION, OFP_VERSION);
 153             exit(EXIT_SUCCESS);
 154
 155         case OPT_MLOCKALL:
 156 #ifdef HAVE_MLOCKALL
 157             if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
 158                 VLOG_ERR("mlockall failed: %s", strerror(errno));
 159             }
 160 #else
 161             VLOG_ERR("mlockall not supported on this system");
 162 #endif
 163             break;
 164
 165         VLOG_OPTION_HANDLERS
 166         DAEMON_OPTION_HANDLERS
 167         LEAK_CHECKER_OPTION_HANDLERS
 168
 169 #ifdef HAVE_OPENSSL
 170         STREAM_SSL_OPTION_HANDLERS
 171
 172         case OPT_PEER_CA_CERT:
 173             stream_ssl_set_peer_ca_cert_file(optarg);
 174             break;
 175
 176         case OPT_BOOTSTRAP_CA_CERT:
 177             stream_ssl_set_ca_cert_file(optarg, true);
 178             break;
 179 #endif
 180
 181         case OPT_ENABLE_DUMMY:
 182             dummy_enable();
 183             break;
 184
 185         case '?':
 186             exit(EXIT_FAILURE);
 187
 188         default:
 189             abort();
 190         }
 191     }
 192     free(short_options);
 193
 194     argc -= optind;
 195     argv += optind;
 196
 197     if (argc != 1) {
 198         VLOG_FATAL("database socket is only non-option argument; "
 199                    "use --help for usage");
 200     }
 201
 202     return argv[0];
 203 }
 204
 205 static void
 206 usage(void)
 207 {
 208     printf("%s: Open vSwitch daemon\n"
 209            "usage: %s [OPTIONS] DATABASE\n"
 210            "where DATABASE is a socket on which ovsdb-server is listening.\n",
 211            program_name, program_name);
 212     stream_usage("DATABASE", true, false, true);
 213     daemon_usage();
 214     vlog_usage();
 215     printf("\nOther options:\n"
 216            "  -h, --help              display this help message\n"
 217            "  -V, --version           display version information\n");
 218     leak_checker_usage();
 219     exit(EXIT_SUCCESS);
 220 }
 221
 222 static void
 223 ovs_vswitchd_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
 224                   void *exiting_)
 225 {
 226     bool *exiting = exiting_;
 227     *exiting = true;
 228     unixctl_command_reply(conn, 200, NULL);
 229 }