2 * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 #include <netinet/in.h>
27 #include "command-line.h"
32 #include "leak-checker.h"
36 #include "ofproto/ofproto.h"
37 #include "openflow/openflow.h"
39 #include "poll-loop.h"
41 #include "stream-ssl.h"
48 VLOG_DEFINE_THIS_MODULE(openflowd);
50 /* Settings that may be configured by the user. */
52 const char *unixctl_path; /* File name for unixctl socket. */
54 /* Controller configuration. */
55 struct ofproto_controller *controllers;
57 enum ofproto_fail_mode fail_mode;
58 bool run_forever; /* Continue running even with no controller? */
61 uint64_t datapath_id; /* Datapath ID. */
62 char *dp_name; /* Name of local datapath. */
63 char *dp_type; /* Type of local datapath. */
64 struct sset ports; /* Set of ports to add to datapath (if any). */
66 /* Description strings. */
67 const char *mfr_desc; /* Manufacturer. */
68 const char *hw_desc; /* Hardware. */
69 const char *sw_desc; /* Software version. */
70 const char *serial_desc; /* Serial number. */
71 const char *dp_desc; /* Datapath description. */
73 /* Related vconns and network devices. */
74 struct sset snoops; /* Listen for controller snooping conns. */
76 /* Failure behavior. */
77 int max_idle; /* Idle time for flows in fail-open mode. */
80 struct sset netflow; /* NetFlow targets. */
83 static unixctl_cb_func test_openflowd_exit;
85 static void parse_options(int argc, char *argv[], struct ofsettings *);
86 static void usage(void) NO_RETURN;
89 main(int argc, char *argv[])
91 struct unixctl_server *unixctl;
92 struct ofproto *ofproto;
95 struct netflow_options nf_options;
99 proctitle_init(argc, argv);
100 set_program_name(argv[0]);
101 parse_options(argc, argv, &s);
102 signal(SIGPIPE, SIG_IGN);
106 /* Start listening for ovs-appctl requests. */
107 error = unixctl_server_create(s.unixctl_path, &unixctl);
112 unixctl_command_register("exit", test_openflowd_exit, &exiting);
114 VLOG_INFO("Open vSwitch version %s", VERSION BUILDNR);
115 VLOG_INFO("OpenFlow protocol version 0x%02x", OFP_VERSION);
117 error = ofproto_create(s.dp_name, s.dp_type, &ofproto);
119 VLOG_FATAL("could not initialize OpenFlow switch (%s)",
123 /* Add ports to the datapath if requested by the user. */
124 SSET_FOR_EACH (port, &s.ports) {
125 struct netdev *netdev;
127 error = netdev_open_default(port, &netdev);
129 VLOG_FATAL("%s: failed to open network device (%s)",
130 port, strerror(error));
133 error = ofproto_port_add(ofproto, netdev, NULL);
135 VLOG_FATAL("failed to add %s as a port (%s)",
136 port, strerror(error));
139 netdev_close(netdev);
142 /* Configure OpenFlow switch. */
144 ofproto_set_datapath_id(ofproto, s.datapath_id);
146 ofproto_set_desc(ofproto, s.mfr_desc, s.hw_desc, s.sw_desc,
147 s.serial_desc, s.dp_desc);
148 error = ofproto_set_snoops(ofproto, &s.snoops);
150 VLOG_FATAL("failed to configure controller snooping connections (%s)",
153 memset(&nf_options, 0, sizeof nf_options);
154 nf_options.collectors = s.netflow;
155 error = ofproto_set_netflow(ofproto, &nf_options);
157 VLOG_FATAL("failed to configure NetFlow collectors (%s)",
160 ofproto_set_controllers(ofproto, s.controllers, s.n_controllers);
161 ofproto_set_fail_mode(ofproto, s.fail_mode);
163 daemonize_complete();
166 while (!exiting && (s.run_forever || ofproto_is_alive(ofproto))) {
167 error = ofproto_run(ofproto);
169 VLOG_FATAL("unrecoverable datapath error (%s)", strerror(error));
171 unixctl_server_run(unixctl);
174 ofproto_wait(ofproto);
175 unixctl_server_wait(unixctl);
178 poll_immediate_wake();
183 ofproto_destroy(ofproto);
189 test_openflowd_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
192 bool *exiting = exiting_;
194 unixctl_command_reply(conn, 200, NULL);
197 /* User interface. */
199 /* Breaks 'ports' apart at commas and adds each resulting word to 'ports'. */
201 parse_ports(const char *s_, struct sset *ports)
203 char *s = xstrdup(s_);
204 char *save_ptr = NULL;
207 for (token = strtok_r(s, ",", &save_ptr); token != NULL;
208 token = strtok_r(NULL, ",", &save_ptr)) {
209 sset_add(ports, token);
215 parse_options(int argc, char *argv[], struct ofsettings *s)
218 OPT_DATAPATH_ID = UCHAR_MAX + 1,
226 OPT_INACTIVITY_PROBE,
232 OPT_BOOTSTRAP_CA_CERT,
240 LEAK_CHECKER_OPTION_ENUMS,
243 static struct option long_options[] = {
244 {"datapath-id", required_argument, NULL, OPT_DATAPATH_ID},
245 {"mfr-desc", required_argument, NULL, OPT_MFR_DESC},
246 {"hw-desc", required_argument, NULL, OPT_HW_DESC},
247 {"sw-desc", required_argument, NULL, OPT_SW_DESC},
248 {"serial-desc", required_argument, NULL, OPT_SERIAL_DESC},
249 {"dp-desc", required_argument, NULL, OPT_DP_DESC},
250 {"config", required_argument, NULL, 'F'},
251 {"br-name", required_argument, NULL, OPT_BR_NAME},
252 {"fail", required_argument, NULL, OPT_FAIL_MODE},
253 {"inactivity-probe", required_argument, NULL, OPT_INACTIVITY_PROBE},
254 {"max-idle", required_argument, NULL, OPT_MAX_IDLE},
255 {"max-backoff", required_argument, NULL, OPT_MAX_BACKOFF},
256 {"listen", required_argument, NULL, 'l'},
257 {"snoop", required_argument, NULL, OPT_SNOOP},
258 {"rate-limit", optional_argument, NULL, OPT_RATE_LIMIT},
259 {"burst-limit", required_argument, NULL, OPT_BURST_LIMIT},
260 {"out-of-band", no_argument, NULL, OPT_OUT_OF_BAND},
261 {"in-band", no_argument, NULL, OPT_IN_BAND},
262 {"netflow", required_argument, NULL, OPT_NETFLOW},
263 {"ports", required_argument, NULL, OPT_PORTS},
264 {"unixctl", required_argument, NULL, OPT_UNIXCTL},
265 {"enable-dummy", no_argument, NULL, OPT_ENABLE_DUMMY},
266 {"verbose", optional_argument, NULL, 'v'},
267 {"help", no_argument, NULL, 'h'},
268 {"version", no_argument, NULL, 'V'},
271 LEAK_CHECKER_LONG_OPTIONS,
272 STREAM_SSL_LONG_OPTIONS,
273 {"bootstrap-ca-cert", required_argument, NULL, OPT_BOOTSTRAP_CA_CERT},
276 char *short_options = long_options_to_short_options(long_options);
277 struct ofproto_controller controller_opts;
278 struct sset controllers;
282 /* Set defaults that we can figure out before parsing options. */
283 controller_opts.target = NULL;
284 controller_opts.max_backoff = 8;
285 controller_opts.probe_interval = 5;
286 controller_opts.band = OFPROTO_IN_BAND;
287 controller_opts.rate_limit = 0;
288 controller_opts.burst_limit = 0;
289 s->unixctl_path = NULL;
290 s->fail_mode = OFPROTO_FAIL_STANDALONE;
295 s->serial_desc = NULL;
297 sset_init(&controllers);
298 sset_init(&s->snoops);
300 sset_init(&s->netflow);
301 sset_init(&s->ports);
305 c = getopt_long(argc, argv, short_options, long_options, NULL);
311 case OPT_DATAPATH_ID:
312 if (!dpid_from_string(optarg, &s->datapath_id)) {
313 VLOG_FATAL("argument to --datapath-id must be exactly 16 hex "
314 "digits and may not be all-zero");
319 s->mfr_desc = optarg;
330 case OPT_SERIAL_DESC:
331 s->serial_desc = optarg;
339 if (!strcmp(optarg, "open") || !strcmp(optarg, "standalone")) {
340 s->fail_mode = OFPROTO_FAIL_STANDALONE;
341 } else if (!strcmp(optarg, "closed")
342 || !strcmp(optarg, "secure")) {
343 s->fail_mode = OFPROTO_FAIL_SECURE;
345 VLOG_FATAL("--fail argument must be \"standalone\" "
350 case OPT_INACTIVITY_PROBE:
351 controller_opts.probe_interval = atoi(optarg);
352 if (controller_opts.probe_interval < 5) {
353 VLOG_FATAL("--inactivity-probe argument must be at least 5");
358 if (!strcmp(optarg, "permanent")) {
359 s->max_idle = OFP_FLOW_PERMANENT;
361 s->max_idle = atoi(optarg);
362 if (s->max_idle < 1 || s->max_idle > 65535) {
363 VLOG_FATAL("--max-idle argument must be between 1 and "
364 "65535 or the word 'permanent'");
369 case OPT_MAX_BACKOFF:
370 controller_opts.max_backoff = atoi(optarg);
371 if (controller_opts.max_backoff < 1) {
372 VLOG_FATAL("--max-backoff argument must be at least 1");
373 } else if (controller_opts.max_backoff > 3600) {
374 controller_opts.max_backoff = 3600;
380 controller_opts.rate_limit = atoi(optarg);
381 if (controller_opts.rate_limit < 1) {
382 VLOG_FATAL("--rate-limit argument must be at least 1");
385 controller_opts.rate_limit = 1000;
389 case OPT_BURST_LIMIT:
390 controller_opts.burst_limit = atoi(optarg);
391 if (controller_opts.burst_limit < 1) {
392 VLOG_FATAL("--burst-limit argument must be at least 1");
396 case OPT_OUT_OF_BAND:
397 controller_opts.band = OFPROTO_OUT_OF_BAND;
401 controller_opts.band = OFPROTO_IN_BAND;
405 sset_add(&s->netflow, optarg);
409 sset_add(&controllers, optarg);
413 sset_add(&s->snoops, optarg);
417 parse_ports(optarg, &s->ports);
421 s->unixctl_path = optarg;
424 case OPT_ENABLE_DUMMY:
432 OVS_PRINT_VERSION(OFP_VERSION, OFP_VERSION);
435 DAEMON_OPTION_HANDLERS
439 LEAK_CHECKER_OPTION_HANDLERS
441 STREAM_SSL_OPTION_HANDLERS
443 case OPT_BOOTSTRAP_CA_CERT:
444 stream_ssl_set_ca_cert_file(optarg, true);
459 VLOG_FATAL("need at least two non-option arguments; "
460 "use --help for usage");
464 if (controller_opts.rate_limit && controller_opts.rate_limit < 100) {
465 VLOG_WARN("Rate limit set to unusually low value %d",
466 controller_opts.rate_limit);
470 ofproto_parse_name(argv[0], &s->dp_name, &s->dp_type);
472 /* Figure out controller names. */
473 s->run_forever = false;
474 if (sset_is_empty(&controllers)) {
475 sset_add_and_free(&controllers, xasprintf("punix:%s/%s.mgmt",
476 ovs_rundir(), s->dp_name));
478 for (i = 1; i < argc; i++) {
479 if (!strcmp(argv[i], "none")) {
480 s->run_forever = true;
482 sset_add(&controllers, argv[i]);
486 /* Set up controllers. */
487 s->n_controllers = sset_count(&controllers);
488 s->controllers = xmalloc(s->n_controllers * sizeof *s->controllers);
490 SSET_FOR_EACH (name, &controllers) {
491 s->controllers[i] = controller_opts;
492 s->controllers[i].target = xstrdup(name);
495 sset_destroy(&controllers);
501 printf("%s: an OpenFlow switch implementation.\n"
502 "usage: %s [OPTIONS] [TYPE@]DATAPATH CONTROLLER...\n"
503 "where DATAPATH is a local datapath (e.g. \"dp0\")\n"
504 "optionally with an explicit TYPE (default: \"system\").\n"
505 "Each CONTROLLER is an active OpenFlow connection method.\n",
506 program_name, program_name);
507 vconn_usage(true, true, true);
508 printf("\nOpenFlow options:\n"
509 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
510 " (ID must consist of 16 hex digits)\n"
511 " --mfr-desc=MFR Identify manufacturer as MFR\n"
512 " --hw-desc=HW Identify hardware as HW\n"
513 " --sw-desc=SW Identify software as SW\n"
514 " --serial-desc=SERIAL Identify serial number as SERIAL\n"
515 " --dp-desc=DP_DESC Identify dp description as DP_DESC\n"
516 "\nNetworking options:\n"
517 " --fail=open|closed when controller connection fails:\n"
518 " closed: drop all packets\n"
519 " open (default): act as learning switch\n"
520 " --inactivity-probe=SECS time between inactivity probes\n"
521 " --max-idle=SECS max idle for flows set up by switch\n"
522 " --max-backoff=SECS max time between controller connection\n"
523 " attempts (default: 8 seconds)\n"
524 " -l, --listen=METHOD allow management connections on METHOD\n"
525 " (a passive OpenFlow connection method)\n"
526 " --snoop=METHOD allow controller snooping on METHOD\n"
527 " (a passive OpenFlow connection method)\n"
528 " --out-of-band controller connection is out-of-band\n"
529 " --netflow=HOST:PORT configure NetFlow output target\n"
530 "\nRate-limiting of \"packet-in\" messages to the controller:\n"
531 " --rate-limit[=PACKETS] max rate, in packets/s (default: 1000)\n"
532 " --burst-limit=BURST limit on packet credit for idle time\n");
535 printf("\nOther options:\n"
536 " --unixctl=SOCKET override default control socket name\n"
537 " -h, --help display this help message\n"
538 " -V, --version display version information\n");
539 leak_checker_usage();