2 * Copyright (c) 2008, 2009, 2010 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"
33 #include "leak-checker.h"
37 #include "ofproto/ofproto.h"
38 #include "openflow/openflow.h"
40 #include "poll-loop.h"
42 #include "stream-ssl.h"
50 VLOG_DEFINE_THIS_MODULE(openflowd);
52 /* Settings that may be configured by the user. */
54 const char *unixctl_path; /* File name for unixctl socket. */
56 /* Controller configuration. */
57 struct ofproto_controller *controllers;
59 enum ofproto_fail_mode fail_mode;
60 bool run_forever; /* Continue running even with no controller? */
63 uint64_t datapath_id; /* Datapath ID. */
64 char *dp_name; /* Name of local datapath. */
65 char *dp_type; /* Type of local datapath. */
66 struct svec ports; /* Set of ports to add to datapath (if any). */
68 /* Description strings. */
69 const char *mfr_desc; /* Manufacturer. */
70 const char *hw_desc; /* Hardware. */
71 const char *sw_desc; /* Software version. */
72 const char *serial_desc; /* Serial number. */
73 const char *dp_desc; /* Datapath description. */
75 /* Related vconns and network devices. */
76 struct svec snoops; /* Listen for controller snooping conns. */
78 /* Failure behavior. */
79 int max_idle; /* Idle time for flows in fail-open mode. */
82 struct svec netflow; /* NetFlow targets. */
85 static unixctl_cb_func ovs_openflowd_exit;
87 static void parse_options(int argc, char *argv[], struct ofsettings *);
88 static void usage(void) NO_RETURN;
91 main(int argc, char *argv[])
93 struct unixctl_server *unixctl;
94 struct ofproto *ofproto;
98 struct netflow_options nf_options;
101 proctitle_init(argc, argv);
102 set_program_name(argv[0]);
103 parse_options(argc, argv, &s);
104 signal(SIGPIPE, SIG_IGN);
106 die_if_already_running();
109 /* Start listening for ovs-appctl requests. */
110 error = unixctl_server_create(s.unixctl_path, &unixctl);
115 unixctl_command_register("exit", ovs_openflowd_exit, &exiting);
117 VLOG_INFO("Open vSwitch version %s", VERSION BUILDNR);
118 VLOG_INFO("OpenFlow protocol version 0x%02x", OFP_VERSION);
120 error = dpif_create_and_open(s.dp_name, s.dp_type, &dpif);
122 ovs_fatal(error, "could not create datapath");
125 /* Add ports to the datapath if requested by the user. */
130 SVEC_FOR_EACH (i, port, &s.ports) {
131 struct netdev *netdev;
133 error = netdev_open_default(port, &netdev);
135 ovs_fatal(error, "%s: failed to open network device", port);
138 error = dpif_port_add(dpif, netdev, NULL);
140 ovs_fatal(error, "failed to add %s as a port", port);
143 netdev_close(netdev);
147 /* Start OpenFlow processing. */
148 error = ofproto_create(s.dp_name, s.dp_type, NULL, NULL, &ofproto);
150 ovs_fatal(error, "could not initialize openflow switch");
153 ofproto_set_datapath_id(ofproto, s.datapath_id);
155 ofproto_set_desc(ofproto, s.mfr_desc, s.hw_desc, s.sw_desc,
156 s.serial_desc, s.dp_desc);
157 error = ofproto_set_snoops(ofproto, &s.snoops);
160 "failed to configure controller snooping connections");
162 memset(&nf_options, 0, sizeof nf_options);
163 nf_options.collectors = s.netflow;
164 error = ofproto_set_netflow(ofproto, &nf_options);
166 ovs_fatal(error, "failed to configure NetFlow collectors");
168 ofproto_set_controllers(ofproto, s.controllers, s.n_controllers);
169 ofproto_set_fail_mode(ofproto, s.fail_mode);
171 daemonize_complete();
174 while (!exiting && (s.run_forever || ofproto_is_alive(ofproto))) {
175 error = ofproto_run(ofproto);
177 ovs_fatal(error, "unrecoverable datapath error");
179 unixctl_server_run(unixctl);
183 ofproto_wait(ofproto);
184 unixctl_server_wait(unixctl);
188 poll_immediate_wake();
199 ovs_openflowd_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
202 bool *exiting = exiting_;
204 unixctl_command_reply(conn, 200, NULL);
207 /* User interface. */
210 parse_options(int argc, char *argv[], struct ofsettings *s)
213 OPT_DATAPATH_ID = UCHAR_MAX + 1,
223 OPT_INACTIVITY_PROBE,
229 OPT_BOOTSTRAP_CA_CERT,
237 LEAK_CHECKER_OPTION_ENUMS
239 static struct option long_options[] = {
240 {"datapath-id", required_argument, 0, OPT_DATAPATH_ID},
241 {"mfr-desc", required_argument, 0, OPT_MFR_DESC},
242 {"hw-desc", required_argument, 0, OPT_HW_DESC},
243 {"sw-desc", required_argument, 0, OPT_SW_DESC},
244 {"serial-desc", required_argument, 0, OPT_SERIAL_DESC},
245 {"dp-desc", required_argument, 0, OPT_DP_DESC},
246 {"accept-vconn", required_argument, 0, OPT_ACCEPT_VCONN},
247 {"no-resolv-conf", no_argument, 0, OPT_NO_RESOLV_CONF},
248 {"config", required_argument, 0, 'F'},
249 {"br-name", required_argument, 0, OPT_BR_NAME},
250 {"fail", required_argument, 0, OPT_FAIL_MODE},
251 {"inactivity-probe", required_argument, 0, OPT_INACTIVITY_PROBE},
252 {"max-idle", required_argument, 0, OPT_MAX_IDLE},
253 {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
254 {"listen", required_argument, 0, 'l'},
255 {"snoop", required_argument, 0, OPT_SNOOP},
256 {"rate-limit", optional_argument, 0, OPT_RATE_LIMIT},
257 {"burst-limit", required_argument, 0, OPT_BURST_LIMIT},
258 {"out-of-band", no_argument, 0, OPT_OUT_OF_BAND},
259 {"in-band", no_argument, 0, OPT_IN_BAND},
260 {"netflow", required_argument, 0, OPT_NETFLOW},
261 {"ports", required_argument, 0, OPT_PORTS},
262 {"unixctl", required_argument, 0, OPT_UNIXCTL},
263 {"enable-dummy", no_argument, 0, OPT_ENABLE_DUMMY},
264 {"verbose", optional_argument, 0, 'v'},
265 {"help", no_argument, 0, 'h'},
266 {"version", no_argument, 0, 'V'},
269 LEAK_CHECKER_LONG_OPTIONS,
271 STREAM_SSL_LONG_OPTIONS
272 {"bootstrap-ca-cert", required_argument, 0, OPT_BOOTSTRAP_CA_CERT},
276 char *short_options = long_options_to_short_options(long_options);
277 struct ofproto_controller controller_opts;
278 struct svec controllers;
281 /* Set defaults that we can figure out before parsing options. */
282 controller_opts.target = NULL;
283 controller_opts.max_backoff = 8;
284 controller_opts.probe_interval = 5;
285 controller_opts.band = OFPROTO_IN_BAND;
286 controller_opts.accept_re = NULL;
287 controller_opts.update_resolv_conf = true;
288 controller_opts.rate_limit = 0;
289 controller_opts.burst_limit = 0;
290 s->unixctl_path = NULL;
291 s->fail_mode = OFPROTO_FAIL_STANDALONE;
296 s->serial_desc = NULL;
298 svec_init(&controllers);
299 svec_init(&s->snoops);
301 svec_init(&s->netflow);
302 svec_init(&s->ports);
306 c = getopt_long(argc, argv, short_options, long_options, NULL);
312 case OPT_DATAPATH_ID:
313 if (!dpid_from_string(optarg, &s->datapath_id)) {
314 ovs_fatal(0, "argument to --datapath-id must be "
315 "exactly 16 hex digits and may not be all-zero");
320 s->mfr_desc = optarg;
331 case OPT_SERIAL_DESC:
332 s->serial_desc = optarg;
339 case OPT_ACCEPT_VCONN:
340 controller_opts.accept_re = optarg;
343 case OPT_NO_RESOLV_CONF:
344 controller_opts.update_resolv_conf = false;
348 if (!strcmp(optarg, "open") || !strcmp(optarg, "standalone")) {
349 s->fail_mode = OFPROTO_FAIL_STANDALONE;
350 } else if (!strcmp(optarg, "closed")
351 || !strcmp(optarg, "secure")) {
352 s->fail_mode = OFPROTO_FAIL_SECURE;
354 ovs_fatal(0, "--fail argument must be \"standalone\" "
359 case OPT_INACTIVITY_PROBE:
360 controller_opts.probe_interval = atoi(optarg);
361 if (controller_opts.probe_interval < 5) {
362 ovs_fatal(0, "--inactivity-probe argument must be at least 5");
367 if (!strcmp(optarg, "permanent")) {
368 s->max_idle = OFP_FLOW_PERMANENT;
370 s->max_idle = atoi(optarg);
371 if (s->max_idle < 1 || s->max_idle > 65535) {
372 ovs_fatal(0, "--max-idle argument must be between 1 and "
373 "65535 or the word 'permanent'");
378 case OPT_MAX_BACKOFF:
379 controller_opts.max_backoff = atoi(optarg);
380 if (controller_opts.max_backoff < 1) {
381 ovs_fatal(0, "--max-backoff argument must be at least 1");
382 } else if (controller_opts.max_backoff > 3600) {
383 controller_opts.max_backoff = 3600;
389 controller_opts.rate_limit = atoi(optarg);
390 if (controller_opts.rate_limit < 1) {
391 ovs_fatal(0, "--rate-limit argument must be at least 1");
394 controller_opts.rate_limit = 1000;
398 case OPT_BURST_LIMIT:
399 controller_opts.burst_limit = atoi(optarg);
400 if (controller_opts.burst_limit < 1) {
401 ovs_fatal(0, "--burst-limit argument must be at least 1");
405 case OPT_OUT_OF_BAND:
406 controller_opts.band = OFPROTO_OUT_OF_BAND;
410 controller_opts.band = OFPROTO_IN_BAND;
414 svec_add(&s->netflow, optarg);
418 svec_add(&controllers, optarg);
422 svec_add(&s->snoops, optarg);
426 svec_split(&s->ports, optarg, ",");
430 s->unixctl_path = optarg;
433 case OPT_ENABLE_DUMMY:
441 OVS_PRINT_VERSION(OFP_VERSION, OFP_VERSION);
444 DAEMON_OPTION_HANDLERS
448 LEAK_CHECKER_OPTION_HANDLERS
451 STREAM_SSL_OPTION_HANDLERS
453 case OPT_BOOTSTRAP_CA_CERT:
454 stream_ssl_set_ca_cert_file(optarg, true);
470 ovs_fatal(0, "need at least one non-option arguments; "
471 "use --help for usage");
474 /* Set accept_controller_regex. */
475 if (!controller_opts.accept_re) {
476 controller_opts.accept_re
477 = stream_ssl_is_configured() ? "^ssl:.*" : "^tcp:.*";
481 if (controller_opts.rate_limit && controller_opts.rate_limit < 100) {
482 VLOG_WARN("Rate limit set to unusually low value %d",
483 controller_opts.rate_limit);
487 dp_parse_name(argv[0], &s->dp_name, &s->dp_type);
489 /* Figure out controller names. */
490 s->run_forever = false;
491 if (!controllers.n) {
492 svec_add_nocopy(&controllers, xasprintf("punix:%s/%s.mgmt",
493 ovs_rundir(), s->dp_name));
495 for (i = 1; i < argc; i++) {
496 if (!strcmp(argv[i], "none")) {
497 s->run_forever = true;
499 svec_add(&controllers, argv[i]);
503 svec_add(&controllers, "discover");
506 /* Set up controllers. */
507 s->n_controllers = controllers.n;
508 s->controllers = xmalloc(s->n_controllers * sizeof *s->controllers);
509 for (i = 0; i < s->n_controllers; i++) {
510 s->controllers[i] = controller_opts;
511 s->controllers[i].target = controllers.names[i];
515 if (controller_opts.band == OFPROTO_OUT_OF_BAND) {
516 for (i = 0; i < s->n_controllers; i++) {
517 if (!strcmp(s->controllers[i].target, "discover")) {
518 ovs_fatal(0, "Cannot perform discovery with out-of-band "
528 printf("%s: an OpenFlow switch implementation.\n"
529 "usage: %s [OPTIONS] [TYPE@]DATAPATH [CONTROLLER...]\n"
530 "where DATAPATH is a local datapath (e.g. \"dp0\")\n"
531 "optionally with an explicit TYPE (default: \"system\").\n"
532 "Each CONTROLLER is an active OpenFlow connection method. If\n"
533 "none is given, ovs-openflowd performs controller discovery.\n",
534 program_name, program_name);
535 vconn_usage(true, true, true);
536 printf("\nOpenFlow options:\n"
537 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
538 " (ID must consist of 16 hex digits)\n"
539 " --mfr-desc=MFR Identify manufacturer as MFR\n"
540 " --hw-desc=HW Identify hardware as HW\n"
541 " --sw-desc=SW Identify software as SW\n"
542 " --serial-desc=SERIAL Identify serial number as SERIAL\n"
543 " --dp-desc=DP_DESC Identify dp description as DP_DESC\n"
544 "\nController discovery options:\n"
545 " --accept-vconn=REGEX accept matching discovered controllers\n"
546 " --no-resolv-conf do not update /etc/resolv.conf\n"
547 "\nNetworking options:\n"
548 " --fail=open|closed when controller connection fails:\n"
549 " closed: drop all packets\n"
550 " open (default): act as learning switch\n"
551 " --inactivity-probe=SECS time between inactivity probes\n"
552 " --max-idle=SECS max idle for flows set up by switch\n"
553 " --max-backoff=SECS max time between controller connection\n"
554 " attempts (default: 8 seconds)\n"
555 " -l, --listen=METHOD allow management connections on METHOD\n"
556 " (a passive OpenFlow connection method)\n"
557 " --snoop=METHOD allow controller snooping on METHOD\n"
558 " (a passive OpenFlow connection method)\n"
559 " --out-of-band controller connection is out-of-band\n"
560 " --netflow=HOST:PORT configure NetFlow output target\n"
561 "\nRate-limiting of \"packet-in\" messages to the controller:\n"
562 " --rate-limit[=PACKETS] max rate, in packets/s (default: 1000)\n"
563 " --burst-limit=BURST limit on packet credit for idle time\n");
566 printf("\nOther options:\n"
567 " --unixctl=SOCKET override default control socket name\n"
568 " -h, --help display this help message\n"
569 " -V, --version display version information\n");
570 leak_checker_usage();