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.
42 #include "command-line.h"
47 #include "poll-loop.h"
53 #include "vconn-ssl.h"
54 #include "vlog-socket.h"
56 #define THIS_MODULE VLM_switch
59 static void parse_options(int argc, char *argv[]);
60 static void usage(void) NO_RETURN;
62 static const char *listen_vconn_name;
63 static struct datapath *dp;
64 static uint64_t dpid = UINT64_MAX;
65 static char *port_list;
67 /* --max-backoff: Maximum interval between controller connection attempts, in
69 static int max_backoff = 15;
71 static void add_ports(struct datapath *dp, char *port_list);
74 main(int argc, char *argv[])
79 set_program_name(argv[0]);
80 register_fault_handlers();
83 parse_options(argc, argv);
85 if (argc - optind != 1) {
86 fatal(0, "missing controller argument; use --help for usage");
89 rconn = rconn_create(128, 60, max_backoff);
90 error = rconn_connect(rconn, argv[optind]);
91 if (error == EAFNOSUPPORT) {
92 fatal(0, "no support for %s vconn", argv[optind]);
94 error = dp_new(&dp, dpid, rconn);
95 if (listen_vconn_name) {
96 struct vconn *listen_vconn;
99 retval = vconn_open(listen_vconn_name, &listen_vconn);
100 if (retval && retval != EAGAIN) {
101 fatal(retval, "opening %s", listen_vconn_name);
103 if (!vconn_is_passive(listen_vconn)) {
104 fatal(0, "%s is not a passive vconn", listen_vconn_name);
106 dp_add_listen_vconn(dp, listen_vconn);
109 fatal(error, "could not create datapath");
112 add_ports(dp, port_list);
115 error = vlog_server_listen(NULL, NULL);
117 fatal(error, "could not listen for vlog connections");
132 add_ports(struct datapath *dp, char *port_list)
134 char *port, *save_ptr;
136 /* Glibc 2.7 has a bug in strtok_r when compiling with optimization that
137 * can cause segfaults here:
138 * http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
139 * Using ",," instead of the obvious "," works around it. */
140 for (port = strtok_r(port_list, ",,", &save_ptr); port;
141 port = strtok_r(NULL, ",,", &save_ptr)) {
142 int error = dp_add_port(dp, port);
144 fatal(error, "failed to add port %s", port);
150 parse_options(int argc, char *argv[])
153 OPT_MAX_BACKOFF = UCHAR_MAX + 1
156 static struct option long_options[] = {
157 {"interfaces", required_argument, 0, 'i'},
158 {"datapath-id", required_argument, 0, 'd'},
159 {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
160 {"listen", required_argument, 0, 'l'},
161 {"detach", no_argument, 0, 'D'},
162 {"pidfile", optional_argument, 0, 'P'},
163 {"verbose", optional_argument, 0, 'v'},
164 {"help", no_argument, 0, 'h'},
165 {"version", no_argument, 0, 'V'},
166 VCONN_SSL_LONG_OPTIONS
169 char *short_options = long_options_to_short_options(long_options);
175 c = getopt_long(argc, argv, short_options, long_options, &indexptr);
182 if (strlen(optarg) != 12
183 || strspn(optarg, "0123456789abcdefABCDEF") != 12) {
184 fatal(0, "argument to -d or --datapath-id must be "
185 "exactly 12 hex digits");
187 dpid = strtoll(optarg, NULL, 16);
189 fatal(0, "argument to -d or --datapath-id must be nonzero");
197 printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
209 vlog_set_verbosity(optarg);
216 port_list = xasprintf("%s,%s", port_list, optarg);
220 case OPT_MAX_BACKOFF:
221 max_backoff = atoi(optarg);
222 if (max_backoff < 1) {
223 fatal(0, "--max-backoff argument must be at least 1");
224 } else if (max_backoff > 3600) {
230 if (listen_vconn_name) {
231 fatal(0, "-l or --listen may be only specified once");
233 listen_vconn_name = optarg;
236 VCONN_SSL_OPTION_HANDLERS
251 printf("%s: userspace OpenFlow switch\n"
252 "usage: %s [OPTIONS] CONTROLLER\n"
253 "where CONTROLLER is an active OpenFlow connection method.\n",
254 program_name, program_name);
255 vconn_usage(true, true);
256 printf("\nConfiguration options:\n"
257 " -i, --interfaces=NETDEV[,NETDEV]...\n"
258 " add specified initial switch ports\n"
259 " -d, --datapath-id=ID Use ID as the OpenFlow switch ID\n"
260 " (ID must consist of 12 hex digits)\n"
261 " --max-backoff=SECS max time between controller connection\n"
262 " attempts (default: 15 seconds)\n"
263 " -l, --listen=METHOD allow management connections on METHOD\n"
264 " (a passive OpenFlow connection method)\n"
266 " -D, --detach run in background as daemon\n"
267 " -P, --pidfile[=FILE] create pidfile (default: %s/switch.pid)\n"
268 " -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
269 " -v, --verbose set maximum verbosity level\n"
270 " -h, --help display this help message\n"
271 " -V, --version display version information\n",