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/* Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <assert.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_MLOCKALL
#include <sys/mman.h>
#endif
#include "bridge.h"
#include "command-line.h"
#include "compiler.h"
#include "daemon.h"
#include "dirs.h"
#include "dpif.h"
#include "dummy.h"
#include "leak-checker.h"
#include "memory.h"
#include "netdev.h"
#include "openflow/openflow.h"
#include "ovsdb-idl.h"
#include "poll-loop.h"
#include "process.h"
#include "signals.h"
#include "simap.h"
#include "stream-ssl.h"
#include "stream.h"
#include "stress.h"
#include "svec.h"
#include "timeval.h"
#include "unixctl.h"
#include "util.h"
#include "vconn.h"
#include "vlog.h"
#include "lib/vswitch-idl.h"
#include "worker.h"
VLOG_DEFINE_THIS_MODULE(vswitchd);
/* --mlockall: If set, locks all process memory into physical RAM, preventing
* the kernel from paging any of its memory to disk. */
static bool want_mlockall;
static unixctl_cb_func ovs_vswitchd_exit;
static char *parse_options(int argc, char *argv[], char **unixctl_path);
static void usage(void) NO_RETURN;
int
main(int argc, char *argv[])
{
char *unixctl_path = NULL;
struct unixctl_server *unixctl;
struct signal *sighup;
char *remote;
bool exiting;
int retval;
proctitle_init(argc, argv);
set_program_name(argv[0]);
stress_init_command();
remote = parse_options(argc, argv, &unixctl_path);
signal(SIGPIPE, SIG_IGN);
sighup = signal_register(SIGHUP);
process_init();
ovsrec_init();
daemonize_start();
if (want_mlockall) {
#ifdef HAVE_MLOCKALL
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
VLOG_ERR("mlockall failed: %s", strerror(errno));
}
#else
VLOG_ERR("mlockall not supported on this system");
#endif
}
worker_start();
retval = unixctl_server_create(unixctl_path, &unixctl);
if (retval) {
exit(EXIT_FAILURE);
}
unixctl_command_register("exit", "", 0, 0, ovs_vswitchd_exit, &exiting);
bridge_init(remote);
free(remote);
exiting = false;
while (!exiting) {
worker_run();
if (signal_poll(sighup)) {
vlog_reopen_log_file();
}
memory_run();
if (memory_should_report()) {
struct simap usage;
simap_init(&usage);
bridge_get_memory_usage(&usage);
memory_report(&usage);
simap_destroy(&usage);
}
bridge_run_fast();
bridge_run();
bridge_run_fast();
unixctl_server_run(unixctl);
netdev_run();
worker_wait();
signal_wait(sighup);
memory_wait();
bridge_wait();
unixctl_server_wait(unixctl);
netdev_wait();
if (exiting) {
poll_immediate_wake();
}
poll_block();
}
bridge_exit();
unixctl_server_destroy(unixctl);
signal_unregister(sighup);
return 0;
}
static char *
parse_options(int argc, char *argv[], char **unixctl_pathp)
{
enum {
OPT_PEER_CA_CERT = UCHAR_MAX + 1,
OPT_MLOCKALL,
OPT_UNIXCTL,
VLOG_OPTION_ENUMS,
LEAK_CHECKER_OPTION_ENUMS,
OPT_BOOTSTRAP_CA_CERT,
OPT_ENABLE_DUMMY,
OPT_DISABLE_SYSTEM,
DAEMON_OPTION_ENUMS
};
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{"mlockall", no_argument, NULL, OPT_MLOCKALL},
{"unixctl", required_argument, NULL, OPT_UNIXCTL},
DAEMON_LONG_OPTIONS,
VLOG_LONG_OPTIONS,
LEAK_CHECKER_LONG_OPTIONS,
STREAM_SSL_LONG_OPTIONS,
{"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT},
{"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT},
{"enable-dummy", optional_argument, NULL, OPT_ENABLE_DUMMY},
{"disable-system", no_argument, NULL, OPT_DISABLE_SYSTEM},
{NULL, 0, NULL, 0},
};
char *short_options = long_options_to_short_options(long_options);
for (;;) {
int c;
c = getopt_long(argc, argv, short_options, long_options, NULL);
if (c == -1) {
break;
}
switch (c) {
case 'h':
usage();
case 'V':
ovs_print_version(OFP10_VERSION, OFP10_VERSION);
exit(EXIT_SUCCESS);
case OPT_MLOCKALL:
want_mlockall = true;
break;
case OPT_UNIXCTL:
*unixctl_pathp = optarg;
break;
VLOG_OPTION_HANDLERS
DAEMON_OPTION_HANDLERS
LEAK_CHECKER_OPTION_HANDLERS
STREAM_SSL_OPTION_HANDLERS
case OPT_PEER_CA_CERT:
stream_ssl_set_peer_ca_cert_file(optarg);
break;
case OPT_BOOTSTRAP_CA_CERT:
stream_ssl_set_ca_cert_file(optarg, true);
break;
case OPT_ENABLE_DUMMY:
dummy_enable(optarg && !strcmp(optarg, "override"));
break;
case OPT_DISABLE_SYSTEM:
dp_blacklist_provider("system");
break;
case '?':
exit(EXIT_FAILURE);
default:
abort();
}
}
free(short_options);
argc -= optind;
argv += optind;
switch (argc) {
case 0:
return xasprintf("unix:%s/db.sock", ovs_rundir());
case 1:
return xstrdup(argv[0]);
default:
VLOG_FATAL("at most one non-option argument accepted; "
"use --help for usage");
}
}
static void
usage(void)
{
printf("%s: Open vSwitch daemon\n"
"usage: %s [OPTIONS] [DATABASE]\n"
"where DATABASE is a socket on which ovsdb-server is listening\n"
" (default: \"unix:%s/db.sock\").\n",
program_name, program_name, ovs_rundir());
stream_usage("DATABASE", true, false, true);
daemon_usage();
vlog_usage();
printf("\nOther options:\n"
" --unixctl=SOCKET override default control socket name\n"
" -h, --help display this help message\n"
" -V, --version display version information\n");
leak_checker_usage();
exit(EXIT_SUCCESS);
}
static void
ovs_vswitchd_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
const char *argv[] OVS_UNUSED, void *exiting_)
{
bool *exiting = exiting_;
*exiting = true;
unixctl_command_reply(conn, NULL);
}
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