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1 | /* Copyright (c) 2008, 2009, 2010, 2011, 2012 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 "dirs.h" | |
34 | #include "dpif.h" | |
35 | #include "dummy.h" | |
36 | #include "leak-checker.h" | |
37 | #include "netdev.h" | |
38 | #include "openflow/openflow.h" | |
39 | #include "ovsdb-idl.h" | |
40 | #include "poll-loop.h" | |
41 | #include "process.h" | |
42 | #include "signals.h" | |
43 | #include "stream-ssl.h" | |
44 | #include "stream.h" | |
45 | #include "stress.h" | |
46 | #include "svec.h" | |
47 | #include "timeval.h" | |
48 | #include "unixctl.h" | |
49 | #include "util.h" | |
50 | #include "vconn.h" | |
51 | #include "vlog.h" | |
52 | #include "vswitch-idl.h" | |
53 | ||
54 | VLOG_DEFINE_THIS_MODULE(vswitchd); | |
55 | ||
56 | static unixctl_cb_func ovs_vswitchd_exit; | |
57 | ||
58 | static char *parse_options(int argc, char *argv[], char **unixctl_path); | |
59 | static void usage(void) NO_RETURN; | |
60 | ||
61 | int | |
62 | main(int argc, char *argv[]) | |
63 | { | |
64 | char *unixctl_path = NULL; | |
65 | struct unixctl_server *unixctl; | |
66 | struct signal *sighup; | |
67 | char *remote; | |
68 | bool exiting; | |
69 | int retval; | |
70 | ||
71 | proctitle_init(argc, argv); | |
72 | set_program_name(argv[0]); | |
73 | stress_init_command(); | |
74 | remote = parse_options(argc, argv, &unixctl_path); | |
75 | signal(SIGPIPE, SIG_IGN); | |
76 | sighup = signal_register(SIGHUP); | |
77 | process_init(); | |
78 | ovsrec_init(); | |
79 | ||
80 | daemonize_start(); | |
81 | ||
82 | retval = unixctl_server_create(unixctl_path, &unixctl); | |
83 | if (retval) { | |
84 | exit(EXIT_FAILURE); | |
85 | } | |
86 | unixctl_command_register("exit", "", 0, 0, ovs_vswitchd_exit, &exiting); | |
87 | ||
88 | bridge_init(remote); | |
89 | free(remote); | |
90 | ||
91 | exiting = false; | |
92 | while (!exiting) { | |
93 | if (signal_poll(sighup)) { | |
94 | vlog_reopen_log_file(); | |
95 | } | |
96 | bridge_run_fast(); | |
97 | bridge_run(); | |
98 | bridge_run_fast(); | |
99 | unixctl_server_run(unixctl); | |
100 | netdev_run(); | |
101 | ||
102 | signal_wait(sighup); | |
103 | bridge_wait(); | |
104 | unixctl_server_wait(unixctl); | |
105 | netdev_wait(); | |
106 | if (exiting) { | |
107 | poll_immediate_wake(); | |
108 | } | |
109 | poll_block(); | |
110 | } | |
111 | bridge_exit(); | |
112 | unixctl_server_destroy(unixctl); | |
113 | signal_unregister(sighup); | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | static char * | |
119 | parse_options(int argc, char *argv[], char **unixctl_pathp) | |
120 | { | |
121 | enum { | |
122 | OPT_PEER_CA_CERT = UCHAR_MAX + 1, | |
123 | OPT_MLOCKALL, | |
124 | OPT_UNIXCTL, | |
125 | VLOG_OPTION_ENUMS, | |
126 | LEAK_CHECKER_OPTION_ENUMS, | |
127 | OPT_BOOTSTRAP_CA_CERT, | |
128 | OPT_ENABLE_DUMMY, | |
129 | OPT_DISABLE_SYSTEM, | |
130 | DAEMON_OPTION_ENUMS | |
131 | }; | |
132 | static struct option long_options[] = { | |
133 | {"help", no_argument, NULL, 'h'}, | |
134 | {"version", no_argument, NULL, 'V'}, | |
135 | {"mlockall", no_argument, NULL, OPT_MLOCKALL}, | |
136 | {"unixctl", required_argument, NULL, OPT_UNIXCTL}, | |
137 | DAEMON_LONG_OPTIONS, | |
138 | VLOG_LONG_OPTIONS, | |
139 | LEAK_CHECKER_LONG_OPTIONS, | |
140 | STREAM_SSL_LONG_OPTIONS, | |
141 | {"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT}, | |
142 | {"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT}, | |
143 | {"enable-dummy", optional_argument, NULL, OPT_ENABLE_DUMMY}, | |
144 | {"disable-system", no_argument, NULL, OPT_DISABLE_SYSTEM}, | |
145 | {NULL, 0, NULL, 0}, | |
146 | }; | |
147 | char *short_options = long_options_to_short_options(long_options); | |
148 | ||
149 | for (;;) { | |
150 | int c; | |
151 | ||
152 | c = getopt_long(argc, argv, short_options, long_options, NULL); | |
153 | if (c == -1) { | |
154 | break; | |
155 | } | |
156 | ||
157 | switch (c) { | |
158 | case 'h': | |
159 | usage(); | |
160 | ||
161 | case 'V': | |
162 | ovs_print_version(OFP10_VERSION, OFP10_VERSION); | |
163 | exit(EXIT_SUCCESS); | |
164 | ||
165 | case OPT_MLOCKALL: | |
166 | #ifdef HAVE_MLOCKALL | |
167 | if (mlockall(MCL_CURRENT | MCL_FUTURE)) { | |
168 | VLOG_ERR("mlockall failed: %s", strerror(errno)); | |
169 | } | |
170 | #else | |
171 | VLOG_ERR("mlockall not supported on this system"); | |
172 | #endif | |
173 | break; | |
174 | ||
175 | case OPT_UNIXCTL: | |
176 | *unixctl_pathp = optarg; | |
177 | break; | |
178 | ||
179 | VLOG_OPTION_HANDLERS | |
180 | DAEMON_OPTION_HANDLERS | |
181 | LEAK_CHECKER_OPTION_HANDLERS | |
182 | STREAM_SSL_OPTION_HANDLERS | |
183 | ||
184 | case OPT_PEER_CA_CERT: | |
185 | stream_ssl_set_peer_ca_cert_file(optarg); | |
186 | break; | |
187 | ||
188 | case OPT_BOOTSTRAP_CA_CERT: | |
189 | stream_ssl_set_ca_cert_file(optarg, true); | |
190 | break; | |
191 | ||
192 | case OPT_ENABLE_DUMMY: | |
193 | dummy_enable(optarg && !strcmp(optarg, "override")); | |
194 | break; | |
195 | ||
196 | case OPT_DISABLE_SYSTEM: | |
197 | dp_blacklist_provider("system"); | |
198 | break; | |
199 | ||
200 | case '?': | |
201 | exit(EXIT_FAILURE); | |
202 | ||
203 | default: | |
204 | abort(); | |
205 | } | |
206 | } | |
207 | free(short_options); | |
208 | ||
209 | argc -= optind; | |
210 | argv += optind; | |
211 | ||
212 | switch (argc) { | |
213 | case 0: | |
214 | return xasprintf("unix:%s/db.sock", ovs_rundir()); | |
215 | ||
216 | case 1: | |
217 | return xstrdup(argv[0]); | |
218 | ||
219 | default: | |
220 | VLOG_FATAL("at most one non-option argument accepted; " | |
221 | "use --help for usage"); | |
222 | } | |
223 | } | |
224 | ||
225 | static void | |
226 | usage(void) | |
227 | { | |
228 | printf("%s: Open vSwitch daemon\n" | |
229 | "usage: %s [OPTIONS] [DATABASE]\n" | |
230 | "where DATABASE is a socket on which ovsdb-server is listening\n" | |
231 | " (default: \"unix:%s/db.sock\").\n", | |
232 | program_name, program_name, ovs_rundir()); | |
233 | stream_usage("DATABASE", true, false, true); | |
234 | daemon_usage(); | |
235 | vlog_usage(); | |
236 | printf("\nOther options:\n" | |
237 | " --unixctl=SOCKET override default control socket name\n" | |
238 | " -h, --help display this help message\n" | |
239 | " -V, --version display version information\n"); | |
240 | leak_checker_usage(); | |
241 | exit(EXIT_SUCCESS); | |
242 | } | |
243 | ||
244 | static void | |
245 | ovs_vswitchd_exit(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
246 | const char *argv[] OVS_UNUSED, void *exiting_) | |
247 | { | |
248 | bool *exiting = exiting_; | |
249 | *exiting = true; | |
250 | unixctl_command_reply(conn, NULL); | |
251 | } |