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 switch description stats message. */
63 char mfr_desc[DESC_STR_LEN] = "Nicira Networks";
64 char hw_desc[DESC_STR_LEN] = "Reference User-Space Switch";
65 char sw_desc[DESC_STR_LEN] = VERSION;
66 char serial_num[SERIAL_NUM_LEN] = "None";
68 static void parse_options(int argc, char *argv[]);
69 static void usage(void) NO_RETURN;
71 static const char *listen_vconn_name;
72 static struct datapath *dp;
73 static uint64_t dpid = UINT64_MAX;
74 static char *port_list;
76 /* --max-backoff: Maximum interval between controller connection attempts, in
78 static int max_backoff = 15;
80 static void add_ports(struct datapath *dp, char *port_list);
83 main(int argc, char *argv[])
88 set_program_name(argv[0]);
89 register_fault_handlers();
92 parse_options(argc, argv);
93 signal(SIGPIPE, SIG_IGN);
95 if (argc - optind != 1) {
96 ofp_fatal(0, "missing controller argument; use --help for usage");
99 rconn = rconn_create(60, max_backoff);
100 error = rconn_connect(rconn, argv[optind]);
101 if (error == EAFNOSUPPORT) {
102 ofp_fatal(0, "no support for %s vconn", argv[optind]);
104 error = dp_new(&dp, dpid, rconn);
105 if (listen_vconn_name) {
106 struct vconn *listen_vconn;
109 retval = vconn_open(listen_vconn_name, &listen_vconn);
110 if (retval && retval != EAGAIN) {
111 ofp_fatal(retval, "opening %s", listen_vconn_name);
113 if (!vconn_is_passive(listen_vconn)) {
114 ofp_fatal(0, "%s is not a passive vconn", listen_vconn_name);
116 dp_add_listen_vconn(dp, listen_vconn);
119 ofp_fatal(error, "could not create datapath");
122 add_ports(dp, port_list);
125 error = vlog_server_listen(NULL, NULL);
127 ofp_fatal(error, "could not listen for vlog connections");
130 die_if_already_running();
143 add_ports(struct datapath *dp, char *port_list)
145 char *port, *save_ptr;
147 /* Glibc 2.7 has a bug in strtok_r when compiling with optimization that
148 * can cause segfaults here:
149 * http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
150 * Using ",," instead of the obvious "," works around it. */
151 for (port = strtok_r(port_list, ",,", &save_ptr); port;
152 port = strtok_r(NULL, ",,", &save_ptr)) {
153 int error = dp_add_port(dp, port);
155 ofp_fatal(error, "failed to add port %s", port);
161 parse_options(int argc, char *argv[])
164 OPT_MAX_BACKOFF = UCHAR_MAX + 1,
171 static struct option long_options[] = {
172 {"interfaces", required_argument, 0, 'i'},
173 {"datapath-id", required_argument, 0, 'd'},
174 {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
175 {"listen", required_argument, 0, 'l'},
176 {"detach", no_argument, 0, 'D'},
177 {"pidfile", optional_argument, 0, 'P'},
178 {"force", no_argument, 0, 'f'},
179 {"verbose", optional_argument, 0, 'v'},
180 {"help", no_argument, 0, 'h'},
181 {"version", no_argument, 0, 'V'},
182 {"mfr-desc", required_argument, 0, OPT_MFR_DESC},
183 {"hw-desc", required_argument, 0, OPT_HW_DESC},
184 {"sw-desc", required_argument, 0, OPT_SW_DESC},
185 {"serial_num", required_argument, 0, OPT_SERIAL_NUM},
186 VCONN_SSL_LONG_OPTIONS
189 char *short_options = long_options_to_short_options(long_options);
195 c = getopt_long(argc, argv, short_options, long_options, &indexptr);
202 if (strlen(optarg) != 12
203 || strspn(optarg, "0123456789abcdefABCDEF") != 12) {
204 ofp_fatal(0, "argument to -d or --datapath-id must be "
205 "exactly 12 hex digits");
207 dpid = strtoll(optarg, NULL, 16);
209 ofp_fatal(0, "argument to -d or --datapath-id must "
218 printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
230 ignore_existing_pidfile();
234 vlog_set_verbosity(optarg);
241 port_list = xasprintf("%s,%s", port_list, optarg);
245 case OPT_MAX_BACKOFF:
246 max_backoff = atoi(optarg);
247 if (max_backoff < 1) {
248 ofp_fatal(0, "--max-backoff argument must be at least 1");
249 } else if (max_backoff > 3600) {
255 strncpy(mfr_desc, optarg, sizeof mfr_desc);
259 strncpy(hw_desc, optarg, sizeof hw_desc);
263 strncpy(sw_desc, optarg, sizeof sw_desc);
267 strncpy(serial_num, optarg, sizeof serial_num);
271 if (listen_vconn_name) {
272 ofp_fatal(0, "-l or --listen may be only specified once");
274 listen_vconn_name = optarg;
277 VCONN_SSL_OPTION_HANDLERS
292 printf("%s: userspace OpenFlow switch\n"
293 "usage: %s [OPTIONS] CONTROLLER\n"
294 "where CONTROLLER is an active OpenFlow connection method.\n",
295 program_name, program_name);
296 vconn_usage(true, true);
297 printf("\nConfiguration options:\n"
298 " -i, --interfaces=NETDEV[,NETDEV]...\n"
299 " add specified initial switch ports\n"
300 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
301 " (ID must consist of 12 hex digits)\n"
302 " --max-backoff=SECS max time between controller connection\n"
303 " attempts (default: 15 seconds)\n"
304 " -l, --listen=METHOD allow management connections on METHOD\n"
305 " (a passive OpenFlow connection method)\n"
307 " -D, --detach run in background as daemon\n"
308 " -P, --pidfile[=FILE] create pidfile (default: %s/switch.pid)\n"
309 " -f, --force with -P, start even if already running\n"
310 " -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
311 " -v, --verbose set maximum verbosity level\n"
312 " -h, --help display this help message\n"
313 " -V, --version display version information\n",