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064af421 | 1 | /* |
e91b927d | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2015 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
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: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
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. | |
064af421 BP |
15 | */ |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include <errno.h> | |
20 | #include <getopt.h> | |
21 | #include <limits.h> | |
22 | #include <signal.h> | |
23 | #include <stdlib.h> | |
882c2399 | 24 | #include <stdio.h> |
064af421 BP |
25 | #include <string.h> |
26 | ||
27 | #include "command-line.h" | |
28 | #include "compiler.h" | |
29 | #include "daemon.h" | |
8a777cf6 | 30 | #include "fatal-signal.h" |
064af421 | 31 | #include "learning-switch.h" |
be721d87 | 32 | #include "ofp-version-opt.h" |
064af421 BP |
33 | #include "ofpbuf.h" |
34 | #include "openflow/openflow.h" | |
35 | #include "poll-loop.h" | |
36 | #include "rconn.h" | |
44bac24b | 37 | #include "simap.h" |
fe55ad15 | 38 | #include "stream-ssl.h" |
064af421 BP |
39 | #include "timeval.h" |
40 | #include "unixctl.h" | |
41 | #include "util.h" | |
7888d2a6 | 42 | #include "openvswitch/ofp-parse.h" |
4a1f523f | 43 | #include "openvswitch/vconn.h" |
e6211adc | 44 | #include "openvswitch/vlog.h" |
f125905c | 45 | #include "socket-util.h" |
7a25bd99 | 46 | #include "ofp-util.h" |
5136ce49 | 47 | |
d98e6007 | 48 | VLOG_DEFINE_THIS_MODULE(controller); |
064af421 BP |
49 | |
50 | #define MAX_SWITCHES 16 | |
51 | #define MAX_LISTENERS 16 | |
52 | ||
53 | struct switch_ { | |
54 | struct lswitch *lswitch; | |
064af421 BP |
55 | }; |
56 | ||
d4cdc6b4 | 57 | /* -H, --hub: Learn the ports on which MAC addresses appear? */ |
064af421 BP |
58 | static bool learn_macs = true; |
59 | ||
d4cdc6b4 BP |
60 | /* -n, --noflow: Set up flows? (If not, every packet is processed at the |
61 | * controller.) */ | |
d6fbec6d | 62 | static bool set_up_flows = true; |
064af421 | 63 | |
9af9e2e8 JT |
64 | /* -N, --normal: Use "NORMAL" action instead of explicit port? */ |
65 | static bool action_normal = false; | |
66 | ||
eec25dc1 | 67 | /* -w, --wildcard: 0 to disable wildcard flow entries, an OFPFW10_* bitmask to |
7286b1e1 BP |
68 | * enable specific wildcards, or UINT32_MAX to use the default wildcards. */ |
69 | static uint32_t wildcards = 0; | |
9af9e2e8 | 70 | |
064af421 BP |
71 | /* --max-idle: Maximum idle time, in seconds, before flows expire. */ |
72 | static int max_idle = 60; | |
73 | ||
7778bd15 BP |
74 | /* --mute: If true, accept connections from switches but do not reply to any |
75 | * of their messages (for debugging fail-open mode). */ | |
76 | static bool mute = false; | |
77 | ||
d4cdc6b4 BP |
78 | /* -q, --queue: default OpenFlow queue, none if UINT32_MAX. */ |
79 | static uint32_t default_queue = UINT32_MAX; | |
80 | ||
44bac24b BP |
81 | /* -Q, --port-queue: map from port name to port number. */ |
82 | static struct simap port_queues = SIMAP_INITIALIZER(&port_queues); | |
611e9a35 | 83 | |
27527aa0 BP |
84 | /* --with-flows: Flows to send to switch. */ |
85 | static struct ofputil_flow_mod *default_flows; | |
86 | static size_t n_default_flows; | |
db0b6c29 | 87 | static enum ofputil_protocol usable_protocols; |
882c2399 | 88 | |
b66bdf30 BP |
89 | /* --unixctl: Name of unixctl socket, or null to use the default. */ |
90 | static char *unixctl_path = NULL; | |
91 | ||
58bdd092 | 92 | static void new_switch(struct switch_ *, struct vconn *); |
064af421 | 93 | static void parse_options(int argc, char *argv[]); |
cab50449 | 94 | OVS_NO_RETURN static void usage(void); |
064af421 BP |
95 | |
96 | int | |
97 | main(int argc, char *argv[]) | |
98 | { | |
99 | struct unixctl_server *unixctl; | |
100 | struct switch_ switches[MAX_SWITCHES]; | |
101 | struct pvconn *listeners[MAX_LISTENERS]; | |
102 | int n_switches, n_listeners; | |
103 | int retval; | |
104 | int i; | |
105 | ||
5f383751 | 106 | ovs_cmdl_proctitle_init(argc, argv); |
064af421 | 107 | set_program_name(argv[0]); |
064af421 | 108 | parse_options(argc, argv); |
8a777cf6 | 109 | fatal_ignore_sigpipe(); |
064af421 | 110 | |
e91b927d AZ |
111 | daemon_become_new_user(false); |
112 | ||
064af421 BP |
113 | if (argc - optind < 1) { |
114 | ovs_fatal(0, "at least one vconn argument required; " | |
115 | "use --help for usage"); | |
116 | } | |
117 | ||
118 | n_switches = n_listeners = 0; | |
119 | for (i = optind; i < argc; i++) { | |
120 | const char *name = argv[i]; | |
121 | struct vconn *vconn; | |
064af421 | 122 | |
82c8c53c BP |
123 | retval = vconn_open(name, get_allowed_ofp_versions(), DSCP_DEFAULT, |
124 | &vconn); | |
064af421 BP |
125 | if (!retval) { |
126 | if (n_switches >= MAX_SWITCHES) { | |
127 | ovs_fatal(0, "max %d switch connections", n_switches); | |
128 | } | |
58bdd092 | 129 | new_switch(&switches[n_switches++], vconn); |
064af421 BP |
130 | continue; |
131 | } else if (retval == EAFNOSUPPORT) { | |
132 | struct pvconn *pvconn; | |
be721d87 | 133 | retval = pvconn_open(name, get_allowed_ofp_versions(), |
82c8c53c | 134 | DSCP_DEFAULT, &pvconn); |
064af421 BP |
135 | if (!retval) { |
136 | if (n_listeners >= MAX_LISTENERS) { | |
137 | ovs_fatal(0, "max %d passive connections", n_listeners); | |
138 | } | |
139 | listeners[n_listeners++] = pvconn; | |
140 | } | |
141 | } | |
142 | if (retval) { | |
10a89ef0 | 143 | VLOG_ERR("%s: connect: %s", name, ovs_strerror(retval)); |
064af421 BP |
144 | } |
145 | } | |
146 | if (n_switches == 0 && n_listeners == 0) { | |
147 | ovs_fatal(0, "no active or passive switch connections"); | |
148 | } | |
149 | ||
e91b927d | 150 | daemonize_start(false); |
064af421 | 151 | |
b66bdf30 | 152 | retval = unixctl_server_create(unixctl_path, &unixctl); |
064af421 | 153 | if (retval) { |
4d12270a | 154 | exit(EXIT_FAILURE); |
064af421 BP |
155 | } |
156 | ||
95440284 BP |
157 | daemonize_complete(); |
158 | ||
064af421 | 159 | while (n_switches > 0 || n_listeners > 0) { |
064af421 BP |
160 | /* Accept connections on listening vconns. */ |
161 | for (i = 0; i < n_listeners && n_switches < MAX_SWITCHES; ) { | |
162 | struct vconn *new_vconn; | |
064af421 | 163 | |
7a25bd99 | 164 | retval = pvconn_accept(listeners[i], &new_vconn); |
064af421 BP |
165 | if (!retval || retval == EAGAIN) { |
166 | if (!retval) { | |
58bdd092 | 167 | new_switch(&switches[n_switches++], new_vconn); |
064af421 BP |
168 | } |
169 | i++; | |
170 | } else { | |
171 | pvconn_close(listeners[i]); | |
172 | listeners[i] = listeners[--n_listeners]; | |
173 | } | |
174 | } | |
175 | ||
002c3f17 BP |
176 | /* Do some switching work. . */ |
177 | for (i = 0; i < n_switches; ) { | |
064af421 | 178 | struct switch_ *this = &switches[i]; |
ba186119 | 179 | lswitch_run(this->lswitch); |
002c3f17 BP |
180 | if (lswitch_is_alive(this->lswitch)) { |
181 | i++; | |
182 | } else { | |
183 | lswitch_destroy(this->lswitch); | |
184 | switches[i] = switches[--n_switches]; | |
185 | } | |
064af421 BP |
186 | } |
187 | ||
188 | unixctl_server_run(unixctl); | |
189 | ||
190 | /* Wait for something to happen. */ | |
191 | if (n_switches < MAX_SWITCHES) { | |
192 | for (i = 0; i < n_listeners; i++) { | |
193 | pvconn_wait(listeners[i]); | |
194 | } | |
195 | } | |
196 | for (i = 0; i < n_switches; i++) { | |
197 | struct switch_ *sw = &switches[i]; | |
064af421 BP |
198 | lswitch_wait(sw->lswitch); |
199 | } | |
200 | unixctl_server_wait(unixctl); | |
201 | poll_block(); | |
202 | } | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static void | |
58bdd092 | 208 | new_switch(struct switch_ *sw, struct vconn *vconn) |
064af421 | 209 | { |
ad67e568 | 210 | struct lswitch_config cfg; |
002c3f17 | 211 | struct rconn *rconn; |
ad67e568 | 212 | |
be721d87 | 213 | rconn = rconn_create(60, 0, DSCP_DEFAULT, get_allowed_ofp_versions()); |
002c3f17 | 214 | rconn_connect_unreliably(rconn, vconn, NULL); |
882c2399 | 215 | |
ad67e568 BP |
216 | cfg.mode = (action_normal ? LSW_NORMAL |
217 | : learn_macs ? LSW_LEARN | |
218 | : LSW_FLOOD); | |
7286b1e1 | 219 | cfg.wildcards = wildcards; |
ad67e568 | 220 | cfg.max_idle = set_up_flows ? max_idle : -1; |
27527aa0 BP |
221 | cfg.default_flows = default_flows; |
222 | cfg.n_default_flows = n_default_flows; | |
db0b6c29 | 223 | cfg.usable_protocols = usable_protocols; |
d4cdc6b4 BP |
224 | cfg.default_queue = default_queue; |
225 | cfg.port_queues = &port_queues; | |
002c3f17 BP |
226 | cfg.mute = mute; |
227 | sw->lswitch = lswitch_create(rconn, &cfg); | |
064af421 BP |
228 | } |
229 | ||
d4cdc6b4 BP |
230 | static void |
231 | add_port_queue(char *s) | |
232 | { | |
233 | char *save_ptr = NULL; | |
234 | char *port_name; | |
235 | char *queue_id; | |
236 | ||
237 | port_name = strtok_r(s, ":", &save_ptr); | |
238 | queue_id = strtok_r(NULL, "", &save_ptr); | |
239 | if (!queue_id) { | |
240 | ovs_fatal(0, "argument to -Q or --port-queue should take the form " | |
241 | "\"<port-name>:<queue-id>\""); | |
242 | } | |
243 | ||
44bac24b | 244 | if (!simap_put(&port_queues, port_name, atoi(queue_id))) { |
d4cdc6b4 BP |
245 | ovs_fatal(0, "<port-name> arguments for -Q or --port-queue must " |
246 | "be unique"); | |
247 | } | |
248 | } | |
249 | ||
064af421 BP |
250 | static void |
251 | parse_options(int argc, char *argv[]) | |
252 | { | |
253 | enum { | |
254 | OPT_MAX_IDLE = UCHAR_MAX + 1, | |
255 | OPT_PEER_CA_CERT, | |
7778bd15 | 256 | OPT_MUTE, |
882c2399 | 257 | OPT_WITH_FLOWS, |
b66bdf30 | 258 | OPT_UNIXCTL, |
8274ae95 | 259 | VLOG_OPTION_ENUMS, |
be721d87 SH |
260 | DAEMON_OPTION_ENUMS, |
261 | OFP_VERSION_OPTION_ENUMS | |
064af421 | 262 | }; |
07fc4ed3 | 263 | static const struct option long_options[] = { |
e3c17733 BP |
264 | {"hub", no_argument, NULL, 'H'}, |
265 | {"noflow", no_argument, NULL, 'n'}, | |
266 | {"normal", no_argument, NULL, 'N'}, | |
7286b1e1 | 267 | {"wildcards", optional_argument, NULL, 'w'}, |
e3c17733 BP |
268 | {"max-idle", required_argument, NULL, OPT_MAX_IDLE}, |
269 | {"mute", no_argument, NULL, OPT_MUTE}, | |
270 | {"queue", required_argument, NULL, 'q'}, | |
271 | {"port-queue", required_argument, NULL, 'Q'}, | |
272 | {"with-flows", required_argument, NULL, OPT_WITH_FLOWS}, | |
273 | {"unixctl", required_argument, NULL, OPT_UNIXCTL}, | |
274 | {"help", no_argument, NULL, 'h'}, | |
064af421 | 275 | DAEMON_LONG_OPTIONS, |
be721d87 | 276 | OFP_VERSION_LONG_OPTIONS, |
064af421 | 277 | VLOG_LONG_OPTIONS, |
bf8f2167 | 278 | STREAM_SSL_LONG_OPTIONS, |
e3c17733 BP |
279 | {"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT}, |
280 | {NULL, 0, NULL, 0}, | |
064af421 | 281 | }; |
5f383751 | 282 | char *short_options = ovs_cmdl_long_options_to_short_options(long_options); |
064af421 BP |
283 | |
284 | for (;;) { | |
285 | int indexptr; | |
bdda5aca | 286 | char *error; |
064af421 BP |
287 | int c; |
288 | ||
289 | c = getopt_long(argc, argv, short_options, long_options, &indexptr); | |
290 | if (c == -1) { | |
291 | break; | |
292 | } | |
293 | ||
294 | switch (c) { | |
295 | case 'H': | |
296 | learn_macs = false; | |
297 | break; | |
298 | ||
299 | case 'n': | |
d6fbec6d | 300 | set_up_flows = false; |
064af421 BP |
301 | break; |
302 | ||
7778bd15 BP |
303 | case OPT_MUTE: |
304 | mute = true; | |
305 | break; | |
306 | ||
9af9e2e8 JT |
307 | case 'N': |
308 | action_normal = true; | |
309 | break; | |
310 | ||
311 | case 'w': | |
7286b1e1 | 312 | wildcards = optarg ? strtol(optarg, NULL, 16) : UINT32_MAX; |
9af9e2e8 JT |
313 | break; |
314 | ||
064af421 BP |
315 | case OPT_MAX_IDLE: |
316 | if (!strcmp(optarg, "permanent")) { | |
317 | max_idle = OFP_FLOW_PERMANENT; | |
318 | } else { | |
319 | max_idle = atoi(optarg); | |
320 | if (max_idle < 1 || max_idle > 65535) { | |
321 | ovs_fatal(0, "--max-idle argument must be between 1 and " | |
322 | "65535 or the word 'permanent'"); | |
323 | } | |
324 | } | |
325 | break; | |
326 | ||
611e9a35 | 327 | case 'q': |
d4cdc6b4 BP |
328 | default_queue = atoi(optarg); |
329 | break; | |
330 | ||
331 | case 'Q': | |
332 | add_port_queue(optarg); | |
611e9a35 BP |
333 | break; |
334 | ||
882c2399 | 335 | case OPT_WITH_FLOWS: |
bdda5aca | 336 | error = parse_ofp_flow_mod_file(optarg, OFPFC_ADD, &default_flows, |
db0b6c29 | 337 | &n_default_flows, |
ba2fe8e9 | 338 | &usable_protocols); |
bdda5aca BP |
339 | if (error) { |
340 | ovs_fatal(0, "%s", error); | |
341 | } | |
882c2399 JP |
342 | break; |
343 | ||
b66bdf30 BP |
344 | case OPT_UNIXCTL: |
345 | unixctl_path = optarg; | |
346 | break; | |
347 | ||
064af421 BP |
348 | case 'h': |
349 | usage(); | |
350 | ||
064af421 | 351 | VLOG_OPTION_HANDLERS |
be721d87 | 352 | OFP_VERSION_OPTION_HANDLERS |
064af421 BP |
353 | DAEMON_OPTION_HANDLERS |
354 | ||
fe55ad15 | 355 | STREAM_SSL_OPTION_HANDLERS |
064af421 BP |
356 | |
357 | case OPT_PEER_CA_CERT: | |
fe55ad15 | 358 | stream_ssl_set_peer_ca_cert_file(optarg); |
064af421 | 359 | break; |
064af421 BP |
360 | |
361 | case '?': | |
362 | exit(EXIT_FAILURE); | |
363 | ||
364 | default: | |
365 | abort(); | |
366 | } | |
367 | } | |
368 | free(short_options); | |
d4cdc6b4 | 369 | |
44bac24b | 370 | if (!simap_is_empty(&port_queues) || default_queue != UINT32_MAX) { |
d4cdc6b4 BP |
371 | if (action_normal) { |
372 | ovs_error(0, "queue IDs are incompatible with -N or --normal; " | |
373 | "not using OFPP_NORMAL"); | |
374 | action_normal = false; | |
375 | } | |
376 | ||
377 | if (!learn_macs) { | |
378 | ovs_error(0, "queue IDs are incompatible with -H or --hub; " | |
379 | "not acting as hub"); | |
380 | learn_macs = true; | |
381 | } | |
382 | } | |
064af421 BP |
383 | } |
384 | ||
385 | static void | |
386 | usage(void) | |
387 | { | |
388 | printf("%s: OpenFlow controller\n" | |
389 | "usage: %s [OPTIONS] METHOD\n" | |
390 | "where METHOD is any OpenFlow connection method.\n", | |
391 | program_name, program_name); | |
392 | vconn_usage(true, true, false); | |
393 | daemon_usage(); | |
be721d87 | 394 | ofp_version_usage(); |
064af421 BP |
395 | vlog_usage(); |
396 | printf("\nOther options:\n" | |
397 | " -H, --hub act as hub instead of learning switch\n" | |
398 | " -n, --noflow pass traffic, but don't add flows\n" | |
399 | " --max-idle=SECS max idle time for new flows\n" | |
d4cdc6b4 | 400 | " -N, --normal use OFPP_NORMAL action\n" |
7286b1e1 | 401 | " -w, --wildcards[=MASK] wildcard (specified) bits in flows\n" |
d4cdc6b4 BP |
402 | " -q, --queue=QUEUE-ID OpenFlow queue ID to use for output\n" |
403 | " -Q PORT-NAME:QUEUE-ID use QUEUE-ID for frames from PORT-NAME\n" | |
882c2399 | 404 | " --with-flows FILE use the flows from FILE\n" |
b66bdf30 | 405 | " --unixctl=SOCKET override default control socket name\n" |
064af421 BP |
406 | " -h, --help display this help message\n" |
407 | " -V, --version display version information\n"); | |
408 | exit(EXIT_SUCCESS); | |
409 | } |