diff options
Diffstat (limited to 'vswitchd/ovs-vswitchd.c')
| -rw-r--r-- | vswitchd/ovs-vswitchd.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/vswitchd/ovs-vswitchd.c b/vswitchd/ovs-vswitchd.c new file mode 100644 index 000000000..9528ec5fd --- /dev/null +++ b/vswitchd/ovs-vswitchd.c @@ -0,0 +1,255 @@ +/* Copyright (c) 2008, 2009 Nicira Networks + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * In addition, as a special exception, Nicira Networks gives permission + * to link the code of its release of vswitchd with the OpenSSL project's + * "OpenSSL" library (or with modified versions of it that use the same + * license as the "OpenSSL" library), and distribute the linked + * executables. You must obey the GNU General Public License in all + * respects for all of the code used other than "OpenSSL". If you modify + * this file, you may extend this exception to your version of the file, + * but you are not obligated to do so. If you do not wish to do so, + * delete this exception statement from your version. + */ + +#include <config.h> + +#include <assert.h> +#include <errno.h> +#include <getopt.h> +#include <limits.h> +#include <signal.h> +#include <stdlib.h> +#include <string.h> + +#include "bridge.h" +#include "cfg.h" +#include "command-line.h" +#include "compiler.h" +#include "daemon.h" +#include "fault.h" +#include "leak-checker.h" +#include "mgmt.h" +#include "ovs-vswitchd.h" +#include "poll-loop.h" +#include "port.h" +#include "proc-net-compat.h" +#include "process.h" +#include "signals.h" +#include "svec.h" +#include "timeval.h" +#include "unixctl.h" +#include "util.h" +#include "vconn-ssl.h" +#include "vconn.h" + +#include "vlog.h" +#define THIS_MODULE VLM_vswitchd + +static void parse_options(int argc, char *argv[]); +static void usage(void) NO_RETURN; +static void reload(struct unixctl_conn *, const char *args); + +static bool need_reconfigure; +static struct unixctl_conn **conns; +static size_t n_conns; + +int +main(int argc, char *argv[]) +{ + struct unixctl_server *unixctl; + struct signal *sighup; + int retval; + + set_program_name(argv[0]); + register_fault_handlers(); + time_init(); + vlog_init(); + parse_options(argc, argv); + signal(SIGPIPE, SIG_IGN); + sighup = signal_register(SIGHUP); + process_init(); + + die_if_already_running(); + daemonize(); + + retval = unixctl_server_create(NULL, &unixctl); + if (retval) { + ovs_fatal(retval, "could not listen for control connections"); + } + unixctl_command_register("vswitchd/reload", reload); + + cfg_read(); + mgmt_init(); + bridge_init(); + port_init(); + mgmt_reconfigure(); + + need_reconfigure = false; + for (;;) { + if (need_reconfigure || signal_poll(sighup)) { + need_reconfigure = false; + vlog_reopen_log_file(); + reconfigure(); + } + mgmt_run(); + if (bridge_run()) { + need_reconfigure = true; + } + unixctl_server_run(unixctl); + + if (need_reconfigure) { + poll_immediate_wake(); + } + signal_wait(sighup); + mgmt_wait(); + bridge_wait(); + unixctl_server_wait(unixctl); + poll_block(); + } + + return 0; +} + +static void +reload(struct unixctl_conn *conn, const char *args UNUSED) +{ + need_reconfigure = true; + conns = xrealloc(conns, sizeof *conns * (n_conns + 1)); + conns[n_conns++] = conn; +} + +void +reconfigure(void) +{ + size_t i; + + cfg_read(); + bridge_reconfigure(); + mgmt_reconfigure(); + port_reconfigure(); + + for (i = 0; i < n_conns; i++) { + unixctl_command_reply(conns[i], 202, NULL); + } + free(conns); + conns = NULL; + n_conns = 0; +} + +static void +parse_options(int argc, char *argv[]) +{ + enum { + OPT_PEER_CA_CERT = UCHAR_MAX + 1, + OPT_FAKE_PROC_NET, + VLOG_OPTION_ENUMS, + LEAK_CHECKER_OPTION_ENUMS + }; + static struct option long_options[] = { + {"help", no_argument, 0, 'h'}, + {"version", no_argument, 0, 'V'}, + {"fake-proc-net", no_argument, 0, OPT_FAKE_PROC_NET}, + DAEMON_LONG_OPTIONS, + VLOG_LONG_OPTIONS, + LEAK_CHECKER_LONG_OPTIONS, +#ifdef HAVE_OPENSSL + VCONN_SSL_LONG_OPTIONS + {"peer-ca-cert", required_argument, 0, OPT_PEER_CA_CERT}, +#endif + {0, 0, 0, 0}, + }; + char *short_options = long_options_to_short_options(long_options); + const char *config_file; + int error; + + for (;;) { + int c; + + c = getopt_long(argc, argv, short_options, long_options, NULL); + if (c == -1) { + break; + } + + switch (c) { + case 'H': + case 'h': + usage(); + + case 'V': + OVS_PRINT_VERSION(OFP_VERSION, OFP_VERSION); + exit(EXIT_SUCCESS); + + case OPT_FAKE_PROC_NET: + error = proc_net_compat_init(); + if (error) { + ovs_fatal(error, "failed to initialize /proc/net " + "compatibility"); + } + break; + + VLOG_OPTION_HANDLERS + DAEMON_OPTION_HANDLERS + VCONN_SSL_OPTION_HANDLERS + LEAK_CHECKER_OPTION_HANDLERS + +#ifdef HAVE_OPENSSL + case OPT_PEER_CA_CERT: + vconn_ssl_set_peer_ca_cert_file(optarg); + break; +#endif + + case '?': + exit(EXIT_FAILURE); + + default: + abort(); + } + } + free(short_options); + + argc -= optind; + argv += optind; + + if (argc != 1) { + ovs_fatal(0, "config file is only non-option argument; " + "use --help for usage"); + } + + config_file = argv[0]; + error = cfg_set_file(config_file); + if (error) { + ovs_fatal(error, "failed to add configuration file \"%s\"", + config_file); + } +} + +static void +usage(void) +{ + printf("%s: virtual switch daemon\n" + "usage: %s [OPTIONS] CONFIG\n" + "CONFIG is a configuration file in ovs-vswitchd.conf(5) format.\n", + program_name, program_name); + daemon_usage(); + vlog_usage(); + printf("\nLegacy compatibility options:\n" + " --fake-proc-net simulate some files in /proc/net\n" + "\nOther options:\n" + " -h, --help display this help message\n" + " -V, --version display version information\n"); + leak_checker_usage(); + exit(EXIT_SUCCESS); +} |