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.
41 #include "command-line.h"
46 #include "poll-loop.h"
51 #include "vconn-ssl.h"
52 #include "vlog-socket.h"
54 #define THIS_MODULE VLM_switch
57 static void parse_options(int argc, char *argv[]);
58 static void usage(void) NO_RETURN;
60 static const char *listen_vconn_name;
61 static struct datapath *dp;
62 static uint64_t dpid = UINT64_MAX;
63 static char *port_list;
65 /* --max-backoff: Maximum interval between controller connection attempts, in
67 static int max_backoff = 15;
69 static void add_ports(struct datapath *dp, char *port_list);
72 main(int argc, char *argv[])
77 set_program_name(argv[0]);
78 register_fault_handlers();
80 parse_options(argc, argv);
82 if (argc - optind != 1) {
83 fatal(0, "missing controller argument; use --help for usage");
86 rconn = rconn_create(128, 60, max_backoff);
87 error = rconn_connect(rconn, argv[optind]);
88 if (error == EAFNOSUPPORT) {
89 fatal(0, "no support for %s vconn", argv[optind]);
91 error = dp_new(&dp, dpid, rconn);
92 if (listen_vconn_name) {
93 struct vconn *listen_vconn;
96 retval = vconn_open(listen_vconn_name, &listen_vconn);
97 if (retval && retval != EAGAIN) {
98 fatal(retval, "opening %s", listen_vconn_name);
100 if (!vconn_is_passive(listen_vconn)) {
101 fatal(0, "%s is not a passive vconn", listen_vconn_name);
103 dp_add_listen_vconn(dp, listen_vconn);
106 fatal(error, "could not create datapath");
109 add_ports(dp, port_list);
112 error = vlog_server_listen(NULL, NULL);
114 fatal(error, "could not listen for vlog connections");
129 add_ports(struct datapath *dp, char *port_list)
131 char *port, *save_ptr;
133 /* Glibc 2.7 has a bug in strtok_r when compiling with optimization that
134 * can cause segfaults here:
135 * http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
136 * Using ",," instead of the obvious "," works around it. */
137 for (port = strtok_r(port_list, ",,", &save_ptr); port;
138 port = strtok_r(NULL, ",,", &save_ptr)) {
139 int error = dp_add_port(dp, port);
141 fatal(error, "failed to add port %s", port);
147 parse_options(int argc, char *argv[])
150 OPT_MAX_BACKOFF = UCHAR_MAX + 1
153 static struct option long_options[] = {
154 {"interfaces", required_argument, 0, 'i'},
155 {"datapath-id", required_argument, 0, 'd'},
156 {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
157 {"listen", required_argument, 0, 'l'},
158 {"detach", no_argument, 0, 'D'},
159 {"pidfile", optional_argument, 0, 'P'},
160 {"verbose", optional_argument, 0, 'v'},
161 {"help", no_argument, 0, 'h'},
162 {"version", no_argument, 0, 'V'},
163 VCONN_SSL_LONG_OPTIONS
166 char *short_options = long_options_to_short_options(long_options);
172 c = getopt_long(argc, argv, short_options, long_options, &indexptr);
179 if (strlen(optarg) != 12
180 || strspn(optarg, "0123456789abcdefABCDEF") != 12) {
181 fatal(0, "argument to -d or --datapath-id must be "
182 "exactly 12 hex digits");
184 dpid = strtoll(optarg, NULL, 16);
186 fatal(0, "argument to -d or --datapath-id must be nonzero");
194 printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
202 set_pidfile(optarg ? optarg : "switch.pid");
206 vlog_set_verbosity(optarg);
213 port_list = xasprintf("%s,%s", port_list, optarg);
217 case OPT_MAX_BACKOFF:
218 max_backoff = atoi(optarg);
219 if (max_backoff < 1) {
220 fatal(0, "--max-backoff argument must be at least 1");
221 } else if (max_backoff > 3600) {
227 if (listen_vconn_name) {
228 fatal(0, "-l or --listen may be only specified once");
230 listen_vconn_name = optarg;
233 VCONN_SSL_OPTION_HANDLERS
248 printf("%s: userspace OpenFlow switch\n"
249 "usage: %s [OPTIONS] CONTROLLER\n"
250 "where CONTROLLER is an active OpenFlow connection method.\n",
251 program_name, program_name);
252 vconn_usage(true, true);
253 printf("\nConfiguration options:\n"
254 " -i, --interfaces=NETDEV[,NETDEV]...\n"
255 " add specified initial switch ports\n"
256 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
257 " (ID must consist of 12 hex digits)\n"
258 " --max-backoff=SECS max time between controller connection\n"
259 " attempts (default: 15 seconds)\n"
260 " -l, --listen=METHOD allow management connections on METHOD\n"
261 " (a passive OpenFlow connection method)\n"
263 " -D, --detach run in background as daemon\n"
264 " -P, --pidfile[=FILE] create pidfile (default: %s/switch.pid)\n"
265 " -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
266 " -v, --verbose set maximum verbosity level\n"
267 " -h, --help display this help message\n"
268 " -V, --version display version information\n",