1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
43 #include "command-line.h"
48 #include "poll-loop.h"
54 #include "vconn-ssl.h"
55 #include "vlog-socket.h"
57 #define THIS_MODULE VLM_switch
61 /* Strings to describe the manufacturer, hardware, and software. This data
62 * is queriable through the version stats message. */
63 char mfr_desc[VERSION_STR_LEN] = "Nicira Networks";
64 char hw_desc[VERSION_STR_LEN] = "Reference User-Space Switch";
65 char sw_desc[VERSION_STR_LEN] = VERSION;
67 static void parse_options(int argc, char *argv[]);
68 static void usage(void) NO_RETURN;
70 static const char *listen_vconn_name;
71 static struct datapath *dp;
72 static uint64_t dpid = UINT64_MAX;
73 static char *port_list;
75 /* --max-backoff: Maximum interval between controller connection attempts, in
77 static int max_backoff = 15;
79 static void add_ports(struct datapath *dp, char *port_list);
82 main(int argc, char *argv[])
87 set_program_name(argv[0]);
88 register_fault_handlers();
91 parse_options(argc, argv);
92 signal(SIGPIPE, SIG_IGN);
94 if (argc - optind != 1) {
95 fatal(0, "missing controller argument; use --help for usage");
98 rconn = rconn_create(60, max_backoff);
99 error = rconn_connect(rconn, argv[optind]);
100 if (error == EAFNOSUPPORT) {
101 fatal(0, "no support for %s vconn", argv[optind]);
103 error = dp_new(&dp, dpid, rconn);
104 if (listen_vconn_name) {
105 struct vconn *listen_vconn;
108 retval = vconn_open(listen_vconn_name, &listen_vconn);
109 if (retval && retval != EAGAIN) {
110 fatal(retval, "opening %s", listen_vconn_name);
112 if (!vconn_is_passive(listen_vconn)) {
113 fatal(0, "%s is not a passive vconn", listen_vconn_name);
115 dp_add_listen_vconn(dp, listen_vconn);
118 fatal(error, "could not create datapath");
121 add_ports(dp, port_list);
124 error = vlog_server_listen(NULL, NULL);
126 fatal(error, "could not listen for vlog connections");
129 die_if_already_running();
142 add_ports(struct datapath *dp, char *port_list)
144 char *port, *save_ptr;
146 /* Glibc 2.7 has a bug in strtok_r when compiling with optimization that
147 * can cause segfaults here:
148 * http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
149 * Using ",," instead of the obvious "," works around it. */
150 for (port = strtok_r(port_list, ",,", &save_ptr); port;
151 port = strtok_r(NULL, ",,", &save_ptr)) {
152 int error = dp_add_port(dp, port);
154 fatal(error, "failed to add port %s", port);
160 parse_options(int argc, char *argv[])
163 OPT_MAX_BACKOFF = UCHAR_MAX + 1,
169 static struct option long_options[] = {
170 {"interfaces", required_argument, 0, 'i'},
171 {"datapath-id", required_argument, 0, 'd'},
172 {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
173 {"listen", required_argument, 0, 'l'},
174 {"detach", no_argument, 0, 'D'},
175 {"pidfile", optional_argument, 0, 'P'},
176 {"force", no_argument, 0, 'f'},
177 {"verbose", optional_argument, 0, 'v'},
178 {"help", no_argument, 0, 'h'},
179 {"version", no_argument, 0, 'V'},
180 {"mfr-desc", required_argument, 0, OPT_MFR_DESC},
181 {"hw-desc", required_argument, 0, OPT_HW_DESC},
182 {"sw-desc", required_argument, 0, OPT_SW_DESC},
183 VCONN_SSL_LONG_OPTIONS
186 char *short_options = long_options_to_short_options(long_options);
192 c = getopt_long(argc, argv, short_options, long_options, &indexptr);
199 if (strlen(optarg) != 12
200 || strspn(optarg, "0123456789abcdefABCDEF") != 12) {
201 fatal(0, "argument to -d or --datapath-id must be "
202 "exactly 12 hex digits");
204 dpid = strtoll(optarg, NULL, 16);
206 fatal(0, "argument to -d or --datapath-id must be nonzero");
214 printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
226 ignore_existing_pidfile();
230 vlog_set_verbosity(optarg);
237 port_list = xasprintf("%s,%s", port_list, optarg);
241 case OPT_MAX_BACKOFF:
242 max_backoff = atoi(optarg);
243 if (max_backoff < 1) {
244 fatal(0, "--max-backoff argument must be at least 1");
245 } else if (max_backoff > 3600) {
251 strncpy(mfr_desc, optarg, sizeof mfr_desc);
255 strncpy(hw_desc, optarg, sizeof hw_desc);
259 strncpy(sw_desc, optarg, sizeof sw_desc);
263 if (listen_vconn_name) {
264 fatal(0, "-l or --listen may be only specified once");
266 listen_vconn_name = optarg;
269 VCONN_SSL_OPTION_HANDLERS
284 printf("%s: userspace OpenFlow switch\n"
285 "usage: %s [OPTIONS] CONTROLLER\n"
286 "where CONTROLLER is an active OpenFlow connection method.\n",
287 program_name, program_name);
288 vconn_usage(true, true);
289 printf("\nConfiguration options:\n"
290 " -i, --interfaces=NETDEV[,NETDEV]...\n"
291 " add specified initial switch ports\n"
292 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
293 " (ID must consist of 12 hex digits)\n"
294 " --max-backoff=SECS max time between controller connection\n"
295 " attempts (default: 15 seconds)\n"
296 " -l, --listen=METHOD allow management connections on METHOD\n"
297 " (a passive OpenFlow connection method)\n"
299 " -D, --detach run in background as daemon\n"
300 " -P, --pidfile[=FILE] create pidfile (default: %s/switch.pid)\n"
301 " -f, --force with -P, start even if already running\n"
302 " -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
303 " -v, --verbose set maximum verbosity level\n"
304 " -h, --help display this help message\n"
305 " -V, --version display version information\n",