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19a87e36 | 1 | /* |
3fbbcba7 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. |
19a87e36 BP |
3 | * |
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: | |
7 | * | |
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. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "connmgr.h" | |
20 | ||
21 | #include <errno.h> | |
22 | #include <stdlib.h> | |
23 | ||
24 | #include "coverage.h" | |
696d1bcf | 25 | #include "dynamic-string.h" |
19a87e36 BP |
26 | #include "fail-open.h" |
27 | #include "in-band.h" | |
28 | #include "odp-util.h" | |
f25d0cf3 | 29 | #include "ofp-actions.h" |
982697a4 | 30 | #include "ofp-msgs.h" |
19a87e36 BP |
31 | #include "ofp-util.h" |
32 | #include "ofpbuf.h" | |
5bee6e26 | 33 | #include "ofproto-provider.h" |
19a87e36 BP |
34 | #include "pinsched.h" |
35 | #include "poll-loop.h" | |
36 | #include "pktbuf.h" | |
37 | #include "rconn.h" | |
38 | #include "shash.h" | |
0d085684 | 39 | #include "simap.h" |
5bd31620 | 40 | #include "stream.h" |
19a87e36 | 41 | #include "timeval.h" |
4a1f523f | 42 | #include "openvswitch/vconn.h" |
e6211adc | 43 | #include "openvswitch/vlog.h" |
19a87e36 | 44 | |
777af88d AC |
45 | #include "bundles.h" |
46 | ||
19a87e36 BP |
47 | VLOG_DEFINE_THIS_MODULE(connmgr); |
48 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
49 | ||
3b0c6b56 BP |
50 | /* An OpenFlow connection. |
51 | * | |
52 | * | |
53 | * Thread-safety | |
54 | * ============= | |
55 | * | |
56 | * 'ofproto_mutex' must be held whenever an ofconn is created or destroyed or, | |
57 | * more or less equivalently, whenever an ofconn is added to or removed from a | |
4cd1bc9d BP |
58 | * connmgr. 'ofproto_mutex' doesn't protect the data inside the ofconn, except |
59 | * as specifically noted below. */ | |
19a87e36 | 60 | struct ofconn { |
c4b31872 BP |
61 | /* Configuration that persists from one connection to the next. */ |
62 | ||
ca6ba700 | 63 | struct ovs_list node; /* In struct connmgr's "all_conns" list. */ |
c4b31872 BP |
64 | struct hmap_node hmap_node; /* In struct connmgr's "controllers" map. */ |
65 | ||
66 | struct connmgr *connmgr; /* Connection's manager. */ | |
19a87e36 BP |
67 | struct rconn *rconn; /* OpenFlow connection. */ |
68 | enum ofconn_type type; /* Type. */ | |
c4b31872 | 69 | enum ofproto_band band; /* In-band or out-of-band? */ |
9886b662 | 70 | bool enable_async_msgs; /* Initially enable async messages? */ |
c4b31872 BP |
71 | |
72 | /* State that should be cleared from one connection to the next. */ | |
73 | ||
74 | /* OpenFlow state. */ | |
f4f1ea7e | 75 | enum ofp12_controller_role role; /* Role. */ |
27527aa0 | 76 | enum ofputil_protocol protocol; /* Current protocol variant. */ |
54834960 | 77 | enum nx_packet_in_format packet_in_format; /* OFPT_PACKET_IN format. */ |
19a87e36 BP |
78 | |
79 | /* OFPT_PACKET_IN related data. */ | |
80 | struct rconn_packet_counter *packet_in_counter; /* # queued on 'rconn'. */ | |
81 | #define N_SCHEDULERS 2 | |
82 | struct pinsched *schedulers[N_SCHEDULERS]; | |
83 | struct pktbuf *pktbuf; /* OpenFlow packet buffers. */ | |
84 | int miss_send_len; /* Bytes to send of buffered packets. */ | |
a7349929 | 85 | uint16_t controller_id; /* Connection controller ID. */ |
19a87e36 BP |
86 | |
87 | /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow | |
88 | * requests, and the maximum number before we stop reading OpenFlow | |
89 | * requests. */ | |
90 | #define OFCONN_REPLY_MAX 100 | |
91 | struct rconn_packet_counter *reply_counter; | |
80d5aefd BP |
92 | |
93 | /* Asynchronous message configuration in each possible roles. | |
94 | * | |
95 | * A 1-bit enables sending an asynchronous message for one possible reason | |
96 | * that the message might be generated, a 0-bit disables it. */ | |
97 | uint32_t master_async_config[OAM_N_TYPES]; /* master, other */ | |
98 | uint32_t slave_async_config[OAM_N_TYPES]; /* slave */ | |
2b07c8b1 | 99 | |
696d1bcf BP |
100 | /* Flow table operation logging. */ |
101 | int n_add, n_delete, n_modify; /* Number of unreported ops of each kind. */ | |
102 | long long int first_op, last_op; /* Range of times for unreported ops. */ | |
103 | long long int next_op_report; /* Time to report ops, or LLONG_MAX. */ | |
104 | long long int op_backoff; /* Earliest time to report ops again. */ | |
105 | ||
4cd1bc9d BP |
106 | /* Flow monitors (e.g. NXST_FLOW_MONITOR). */ |
107 | ||
108 | /* Configuration. Contains "struct ofmonitor"s. */ | |
109 | struct hmap monitors OVS_GUARDED_BY(ofproto_mutex); | |
110 | ||
111 | /* Flow control. | |
112 | * | |
113 | * When too many flow monitor notifications back up in the transmit buffer, | |
114 | * we pause the transmission of further notifications. These members track | |
115 | * the flow control state. | |
116 | * | |
117 | * When notifications are flowing, 'monitor_paused' is 0. When | |
118 | * notifications are paused, 'monitor_paused' is the value of | |
119 | * 'monitor_seqno' at the point we paused. | |
120 | * | |
121 | * 'monitor_counter' counts the OpenFlow messages and bytes currently in | |
122 | * flight. This value growing too large triggers pausing. */ | |
123 | uint64_t monitor_paused OVS_GUARDED_BY(ofproto_mutex); | |
124 | struct rconn_packet_counter *monitor_counter OVS_GUARDED_BY(ofproto_mutex); | |
125 | ||
126 | /* State of monitors for a single ongoing flow_mod. | |
127 | * | |
128 | * 'updates' is a list of "struct ofpbuf"s that contain | |
129 | * NXST_FLOW_MONITOR_REPLY messages representing the changes made by the | |
130 | * current flow_mod. | |
131 | * | |
132 | * When 'updates' is nonempty, 'sent_abbrev_update' is true if 'updates' | |
133 | * contains an update event of type NXFME_ABBREV and false otherwise.. */ | |
ca6ba700 | 134 | struct ovs_list updates OVS_GUARDED_BY(ofproto_mutex); |
4cd1bc9d | 135 | bool sent_abbrev_update OVS_GUARDED_BY(ofproto_mutex); |
777af88d AC |
136 | |
137 | /* Active bundles. Contains "struct ofp_bundle"s. */ | |
138 | struct hmap bundles; | |
19a87e36 BP |
139 | }; |
140 | ||
141 | static struct ofconn *ofconn_create(struct connmgr *, struct rconn *, | |
3b0c6b56 BP |
142 | enum ofconn_type, bool enable_async_msgs) |
143 | OVS_REQUIRES(ofproto_mutex); | |
144 | static void ofconn_destroy(struct ofconn *) OVS_REQUIRES(ofproto_mutex); | |
145 | static void ofconn_flush(struct ofconn *) OVS_REQUIRES(ofproto_mutex); | |
19a87e36 BP |
146 | |
147 | static void ofconn_reconfigure(struct ofconn *, | |
148 | const struct ofproto_controller *); | |
149 | ||
150 | static void ofconn_run(struct ofconn *, | |
b20f4073 | 151 | void (*handle_openflow)(struct ofconn *, |
e03248b7 | 152 | const struct ofpbuf *ofp_msg)); |
b20f4073 | 153 | static void ofconn_wait(struct ofconn *); |
19a87e36 | 154 | |
696d1bcf BP |
155 | static void ofconn_log_flow_mods(struct ofconn *); |
156 | ||
19a87e36 BP |
157 | static const char *ofconn_get_target(const struct ofconn *); |
158 | static char *ofconn_make_name(const struct connmgr *, const char *target); | |
159 | ||
160 | static void ofconn_set_rate_limit(struct ofconn *, int rate, int burst); | |
161 | ||
19a87e36 BP |
162 | static void ofconn_send(const struct ofconn *, struct ofpbuf *, |
163 | struct rconn_packet_counter *); | |
164 | ||
ca6ba700 | 165 | static void do_send_packet_ins(struct ofconn *, struct ovs_list *txq); |
19a87e36 BP |
166 | |
167 | /* A listener for incoming OpenFlow "service" connections. */ | |
168 | struct ofservice { | |
169 | struct hmap_node node; /* In struct connmgr's "services" hmap. */ | |
170 | struct pvconn *pvconn; /* OpenFlow connection listener. */ | |
171 | ||
172 | /* These are not used by ofservice directly. They are settings for | |
173 | * accepted "struct ofconn"s from the pvconn. */ | |
174 | int probe_interval; /* Max idle time before probing, in seconds. */ | |
175 | int rate_limit; /* Max packet-in rate in packets per second. */ | |
176 | int burst_limit; /* Limit on accumulating packet credits. */ | |
9886b662 | 177 | bool enable_async_msgs; /* Initially enable async messages? */ |
f125905c | 178 | uint8_t dscp; /* DSCP Value for controller connection */ |
90ef0206 SH |
179 | uint32_t allowed_versions; /* OpenFlow protocol versions that may |
180 | * be negotiated for a session. */ | |
19a87e36 BP |
181 | }; |
182 | ||
183 | static void ofservice_reconfigure(struct ofservice *, | |
184 | const struct ofproto_controller *); | |
00401ef0 SH |
185 | static int ofservice_create(struct connmgr *mgr, const char *target, |
186 | uint32_t allowed_versions, uint8_t dscp); | |
19a87e36 BP |
187 | static void ofservice_destroy(struct connmgr *, struct ofservice *); |
188 | static struct ofservice *ofservice_lookup(struct connmgr *, | |
189 | const char *target); | |
190 | ||
191 | /* Connection manager for an OpenFlow switch. */ | |
192 | struct connmgr { | |
193 | struct ofproto *ofproto; | |
194 | char *name; | |
195 | char *local_port_name; | |
196 | ||
197 | /* OpenFlow connections. */ | |
ca6ba700 TG |
198 | struct hmap controllers; /* All OFCONN_PRIMARY controllers. */ |
199 | struct ovs_list all_conns; /* All controllers. */ | |
6ea4776b JR |
200 | uint64_t master_election_id; /* monotonically increasing sequence number |
201 | * for master election */ | |
202 | bool master_election_id_defined; | |
19a87e36 BP |
203 | |
204 | /* OpenFlow listeners. */ | |
205 | struct hmap services; /* Contains "struct ofservice"s. */ | |
206 | struct pvconn **snoops; | |
207 | size_t n_snoops; | |
208 | ||
209 | /* Fail open. */ | |
210 | struct fail_open *fail_open; | |
211 | enum ofproto_fail_mode fail_mode; | |
212 | ||
213 | /* In-band control. */ | |
214 | struct in_band *in_band; | |
19a87e36 BP |
215 | struct sockaddr_in *extra_in_band_remotes; |
216 | size_t n_extra_remotes; | |
217 | int in_band_queue; | |
218 | }; | |
219 | ||
220 | static void update_in_band_remotes(struct connmgr *); | |
221 | static void add_snooper(struct connmgr *, struct vconn *); | |
2b07c8b1 BP |
222 | static void ofmonitor_run(struct connmgr *); |
223 | static void ofmonitor_wait(struct connmgr *); | |
19a87e36 BP |
224 | |
225 | /* Creates and returns a new connection manager owned by 'ofproto'. 'name' is | |
226 | * a name for the ofproto suitable for using in log messages. | |
227 | * 'local_port_name' is the name of the local port (OFPP_LOCAL) within | |
228 | * 'ofproto'. */ | |
229 | struct connmgr * | |
230 | connmgr_create(struct ofproto *ofproto, | |
231 | const char *name, const char *local_port_name) | |
232 | { | |
233 | struct connmgr *mgr; | |
234 | ||
235 | mgr = xmalloc(sizeof *mgr); | |
236 | mgr->ofproto = ofproto; | |
237 | mgr->name = xstrdup(name); | |
238 | mgr->local_port_name = xstrdup(local_port_name); | |
239 | ||
240 | hmap_init(&mgr->controllers); | |
241 | list_init(&mgr->all_conns); | |
6ea4776b JR |
242 | mgr->master_election_id = 0; |
243 | mgr->master_election_id_defined = false; | |
19a87e36 BP |
244 | |
245 | hmap_init(&mgr->services); | |
246 | mgr->snoops = NULL; | |
247 | mgr->n_snoops = 0; | |
248 | ||
249 | mgr->fail_open = NULL; | |
250 | mgr->fail_mode = OFPROTO_FAIL_SECURE; | |
251 | ||
252 | mgr->in_band = NULL; | |
19a87e36 BP |
253 | mgr->extra_in_band_remotes = NULL; |
254 | mgr->n_extra_remotes = 0; | |
255 | mgr->in_band_queue = -1; | |
256 | ||
257 | return mgr; | |
258 | } | |
259 | ||
260 | /* Frees 'mgr' and all of its resources. */ | |
261 | void | |
262 | connmgr_destroy(struct connmgr *mgr) | |
263 | { | |
264 | struct ofservice *ofservice, *next_ofservice; | |
265 | struct ofconn *ofconn, *next_ofconn; | |
266 | size_t i; | |
267 | ||
268 | if (!mgr) { | |
269 | return; | |
270 | } | |
271 | ||
3b0c6b56 | 272 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 BP |
273 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) { |
274 | ofconn_destroy(ofconn); | |
275 | } | |
3b0c6b56 BP |
276 | ovs_mutex_unlock(&ofproto_mutex); |
277 | ||
19a87e36 BP |
278 | hmap_destroy(&mgr->controllers); |
279 | ||
280 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, node, &mgr->services) { | |
281 | ofservice_destroy(mgr, ofservice); | |
282 | } | |
283 | hmap_destroy(&mgr->services); | |
284 | ||
285 | for (i = 0; i < mgr->n_snoops; i++) { | |
286 | pvconn_close(mgr->snoops[i]); | |
287 | } | |
288 | free(mgr->snoops); | |
289 | ||
290 | fail_open_destroy(mgr->fail_open); | |
291 | mgr->fail_open = NULL; | |
292 | ||
293 | in_band_destroy(mgr->in_band); | |
294 | mgr->in_band = NULL; | |
295 | free(mgr->extra_in_band_remotes); | |
296 | free(mgr->name); | |
297 | free(mgr->local_port_name); | |
298 | ||
299 | free(mgr); | |
300 | } | |
301 | ||
b20f4073 BP |
302 | /* Does all of the periodic maintenance required by 'mgr'. Calls |
303 | * 'handle_openflow' for each message received on an OpenFlow connection, | |
304 | * passing along the OpenFlow connection itself and the message that was sent. | |
305 | * 'handle_openflow' must not modify or free the message. */ | |
19a87e36 BP |
306 | void |
307 | connmgr_run(struct connmgr *mgr, | |
b20f4073 | 308 | void (*handle_openflow)(struct ofconn *, |
e03248b7 | 309 | const struct ofpbuf *ofp_msg)) |
15aaf599 | 310 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 BP |
311 | { |
312 | struct ofconn *ofconn, *next_ofconn; | |
313 | struct ofservice *ofservice; | |
314 | size_t i; | |
315 | ||
b20f4073 | 316 | if (mgr->in_band) { |
6da1e809 BP |
317 | if (!in_band_run(mgr->in_band)) { |
318 | in_band_destroy(mgr->in_band); | |
319 | mgr->in_band = NULL; | |
320 | } | |
19a87e36 BP |
321 | } |
322 | ||
323 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) { | |
324 | ofconn_run(ofconn, handle_openflow); | |
325 | } | |
2b07c8b1 | 326 | ofmonitor_run(mgr); |
19a87e36 BP |
327 | |
328 | /* Fail-open maintenance. Do this after processing the ofconns since | |
329 | * fail-open checks the status of the controller rconn. */ | |
b20f4073 | 330 | if (mgr->fail_open) { |
19a87e36 BP |
331 | fail_open_run(mgr->fail_open); |
332 | } | |
333 | ||
334 | HMAP_FOR_EACH (ofservice, node, &mgr->services) { | |
335 | struct vconn *vconn; | |
336 | int retval; | |
337 | ||
7a25bd99 | 338 | retval = pvconn_accept(ofservice->pvconn, &vconn); |
19a87e36 BP |
339 | if (!retval) { |
340 | struct rconn *rconn; | |
341 | char *name; | |
342 | ||
f125905c | 343 | /* Passing default value for creation of the rconn */ |
1d9ffc17 SH |
344 | rconn = rconn_create(ofservice->probe_interval, 0, ofservice->dscp, |
345 | vconn_get_allowed_versions(vconn)); | |
19a87e36 BP |
346 | name = ofconn_make_name(mgr, vconn_get_name(vconn)); |
347 | rconn_connect_unreliably(rconn, vconn, name); | |
348 | free(name); | |
349 | ||
3b0c6b56 | 350 | ovs_mutex_lock(&ofproto_mutex); |
9886b662 BP |
351 | ofconn = ofconn_create(mgr, rconn, OFCONN_SERVICE, |
352 | ofservice->enable_async_msgs); | |
3b0c6b56 BP |
353 | ovs_mutex_unlock(&ofproto_mutex); |
354 | ||
19a87e36 BP |
355 | ofconn_set_rate_limit(ofconn, ofservice->rate_limit, |
356 | ofservice->burst_limit); | |
357 | } else if (retval != EAGAIN) { | |
10a89ef0 | 358 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); |
19a87e36 BP |
359 | } |
360 | } | |
361 | ||
362 | for (i = 0; i < mgr->n_snoops; i++) { | |
363 | struct vconn *vconn; | |
364 | int retval; | |
365 | ||
7a25bd99 | 366 | retval = pvconn_accept(mgr->snoops[i], &vconn); |
19a87e36 BP |
367 | if (!retval) { |
368 | add_snooper(mgr, vconn); | |
369 | } else if (retval != EAGAIN) { | |
10a89ef0 | 370 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); |
19a87e36 BP |
371 | } |
372 | } | |
373 | } | |
374 | ||
b20f4073 | 375 | /* Causes the poll loop to wake up when connmgr_run() needs to run. */ |
19a87e36 | 376 | void |
b20f4073 | 377 | connmgr_wait(struct connmgr *mgr) |
19a87e36 BP |
378 | { |
379 | struct ofservice *ofservice; | |
380 | struct ofconn *ofconn; | |
381 | size_t i; | |
382 | ||
383 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
b20f4073 | 384 | ofconn_wait(ofconn); |
19a87e36 | 385 | } |
2b07c8b1 | 386 | ofmonitor_wait(mgr); |
b20f4073 | 387 | if (mgr->in_band) { |
19a87e36 BP |
388 | in_band_wait(mgr->in_band); |
389 | } | |
b20f4073 | 390 | if (mgr->fail_open) { |
19a87e36 BP |
391 | fail_open_wait(mgr->fail_open); |
392 | } | |
393 | HMAP_FOR_EACH (ofservice, node, &mgr->services) { | |
394 | pvconn_wait(ofservice->pvconn); | |
395 | } | |
396 | for (i = 0; i < mgr->n_snoops; i++) { | |
397 | pvconn_wait(mgr->snoops[i]); | |
398 | } | |
399 | } | |
400 | ||
0d085684 BP |
401 | /* Adds some memory usage statistics for 'mgr' into 'usage', for use with |
402 | * memory_report(). */ | |
403 | void | |
404 | connmgr_get_memory_usage(const struct connmgr *mgr, struct simap *usage) | |
405 | { | |
406 | const struct ofconn *ofconn; | |
407 | unsigned int packets = 0; | |
408 | unsigned int ofconns = 0; | |
409 | ||
410 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
411 | int i; | |
412 | ||
413 | ofconns++; | |
414 | ||
415 | packets += rconn_count_txqlen(ofconn->rconn); | |
416 | for (i = 0; i < N_SCHEDULERS; i++) { | |
a413195e BP |
417 | struct pinsched_stats stats; |
418 | ||
419 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
ea53e3a8 | 420 | packets += stats.n_queued; |
0d085684 BP |
421 | } |
422 | packets += pktbuf_count_packets(ofconn->pktbuf); | |
423 | } | |
424 | simap_increase(usage, "ofconns", ofconns); | |
425 | simap_increase(usage, "packets", packets); | |
426 | } | |
427 | ||
19a87e36 BP |
428 | /* Returns the ofproto that owns 'ofconn''s connmgr. */ |
429 | struct ofproto * | |
430 | ofconn_get_ofproto(const struct ofconn *ofconn) | |
431 | { | |
432 | return ofconn->connmgr->ofproto; | |
433 | } | |
434 | \f | |
435 | /* OpenFlow configuration. */ | |
436 | ||
1d9ffc17 | 437 | static void add_controller(struct connmgr *, const char *target, uint8_t dscp, |
3b0c6b56 BP |
438 | uint32_t allowed_versions) |
439 | OVS_REQUIRES(ofproto_mutex); | |
19a87e36 BP |
440 | static struct ofconn *find_controller_by_target(struct connmgr *, |
441 | const char *target); | |
feb8a80b | 442 | static void update_fail_open(struct connmgr *) OVS_EXCLUDED(ofproto_mutex); |
19a87e36 | 443 | static int set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, |
81e2083f | 444 | const struct sset *); |
19a87e36 BP |
445 | |
446 | /* Returns true if 'mgr' has any configured primary controllers. | |
447 | * | |
448 | * Service controllers do not count, but configured primary controllers do | |
449 | * count whether or not they are currently connected. */ | |
450 | bool | |
451 | connmgr_has_controllers(const struct connmgr *mgr) | |
452 | { | |
453 | return !hmap_is_empty(&mgr->controllers); | |
454 | } | |
455 | ||
456 | /* Initializes 'info' and populates it with information about each configured | |
457 | * primary controller. The keys in 'info' are the controllers' targets; the | |
458 | * data values are corresponding "struct ofproto_controller_info". | |
459 | * | |
460 | * The caller owns 'info' and everything in it and should free it when it is no | |
461 | * longer needed. */ | |
462 | void | |
463 | connmgr_get_controller_info(struct connmgr *mgr, struct shash *info) | |
464 | { | |
465 | const struct ofconn *ofconn; | |
466 | ||
19a87e36 BP |
467 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { |
468 | const struct rconn *rconn = ofconn->rconn; | |
5d279086 | 469 | const char *target = rconn_get_target(rconn); |
19a87e36 | 470 | |
5d279086 AE |
471 | if (!shash_find(info, target)) { |
472 | struct ofproto_controller_info *cinfo = xmalloc(sizeof *cinfo); | |
473 | time_t now = time_now(); | |
474 | time_t last_connection = rconn_get_last_connection(rconn); | |
475 | time_t last_disconnect = rconn_get_last_disconnect(rconn); | |
476 | int last_error = rconn_get_last_error(rconn); | |
a413195e | 477 | int i; |
19a87e36 | 478 | |
5d279086 | 479 | shash_add(info, target, cinfo); |
19a87e36 | 480 | |
5d279086 AE |
481 | cinfo->is_connected = rconn_is_connected(rconn); |
482 | cinfo->role = ofconn->role; | |
19a87e36 | 483 | |
f5ad2e5f | 484 | smap_init(&cinfo->pairs); |
5d279086 | 485 | if (last_error) { |
f5ad2e5f BP |
486 | smap_add(&cinfo->pairs, "last_error", |
487 | ovs_retval_to_string(last_error)); | |
5d279086 | 488 | } |
19a87e36 | 489 | |
f5ad2e5f | 490 | smap_add(&cinfo->pairs, "state", rconn_get_state(rconn)); |
5d279086 AE |
491 | |
492 | if (last_connection != TIME_MIN) { | |
f5ad2e5f BP |
493 | smap_add_format(&cinfo->pairs, "sec_since_connect", |
494 | "%ld", (long int) (now - last_connection)); | |
5d279086 AE |
495 | } |
496 | ||
497 | if (last_disconnect != TIME_MIN) { | |
f5ad2e5f BP |
498 | smap_add_format(&cinfo->pairs, "sec_since_disconnect", |
499 | "%ld", (long int) (now - last_disconnect)); | |
5d279086 | 500 | } |
a413195e BP |
501 | |
502 | for (i = 0; i < N_SCHEDULERS; i++) { | |
503 | if (ofconn->schedulers[i]) { | |
504 | const char *name = i ? "miss" : "action"; | |
505 | struct pinsched_stats stats; | |
506 | ||
507 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
508 | smap_add_nocopy(&cinfo->pairs, | |
509 | xasprintf("packet-in-%s-backlog", name), | |
510 | xasprintf("%u", stats.n_queued)); | |
511 | smap_add_nocopy(&cinfo->pairs, | |
512 | xasprintf("packet-in-%s-bypassed", name), | |
513 | xasprintf("%llu", stats.n_normal)); | |
514 | smap_add_nocopy(&cinfo->pairs, | |
515 | xasprintf("packet-in-%s-queued", name), | |
516 | xasprintf("%llu", stats.n_limited)); | |
517 | smap_add_nocopy(&cinfo->pairs, | |
518 | xasprintf("packet-in-%s-dropped", name), | |
519 | xasprintf("%llu", stats.n_queue_dropped)); | |
520 | } | |
521 | } | |
19a87e36 BP |
522 | } |
523 | } | |
524 | } | |
525 | ||
72ba2ed3 AE |
526 | void |
527 | connmgr_free_controller_info(struct shash *info) | |
528 | { | |
529 | struct shash_node *node; | |
530 | ||
531 | SHASH_FOR_EACH (node, info) { | |
532 | struct ofproto_controller_info *cinfo = node->data; | |
f5ad2e5f | 533 | smap_destroy(&cinfo->pairs); |
72ba2ed3 AE |
534 | free(cinfo); |
535 | } | |
536 | shash_destroy(info); | |
537 | } | |
538 | ||
19a87e36 BP |
539 | /* Changes 'mgr''s set of controllers to the 'n_controllers' controllers in |
540 | * 'controllers'. */ | |
541 | void | |
542 | connmgr_set_controllers(struct connmgr *mgr, | |
543 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 544 | size_t n_controllers, uint32_t allowed_versions) |
3b0c6b56 | 545 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 546 | { |
08fd19f0 | 547 | bool had_controllers = connmgr_has_controllers(mgr); |
19a87e36 BP |
548 | struct shash new_controllers; |
549 | struct ofconn *ofconn, *next_ofconn; | |
550 | struct ofservice *ofservice, *next_ofservice; | |
19a87e36 BP |
551 | size_t i; |
552 | ||
3b0c6b56 BP |
553 | /* Required to add and remove ofconns. This could probably be narrowed to |
554 | * cover a smaller amount of code, if that yielded some benefit. */ | |
555 | ovs_mutex_lock(&ofproto_mutex); | |
556 | ||
19a87e36 BP |
557 | /* Create newly configured controllers and services. |
558 | * Create a name to ofproto_controller mapping in 'new_controllers'. */ | |
559 | shash_init(&new_controllers); | |
560 | for (i = 0; i < n_controllers; i++) { | |
561 | const struct ofproto_controller *c = &controllers[i]; | |
562 | ||
563 | if (!vconn_verify_name(c->target)) { | |
90ef0206 SH |
564 | bool add = false; |
565 | ofconn = find_controller_by_target(mgr, c->target); | |
566 | if (!ofconn) { | |
1ea9e609 BP |
567 | VLOG_INFO("%s: added primary controller \"%s\"", |
568 | mgr->name, c->target); | |
90ef0206 SH |
569 | add = true; |
570 | } else if (rconn_get_allowed_versions(ofconn->rconn) != | |
571 | allowed_versions) { | |
572 | VLOG_INFO("%s: re-added primary controller \"%s\"", | |
573 | mgr->name, c->target); | |
574 | add = true; | |
575 | ofconn_destroy(ofconn); | |
576 | } | |
577 | if (add) { | |
1d9ffc17 | 578 | add_controller(mgr, c->target, c->dscp, allowed_versions); |
19a87e36 BP |
579 | } |
580 | } else if (!pvconn_verify_name(c->target)) { | |
90ef0206 SH |
581 | bool add = false; |
582 | ofservice = ofservice_lookup(mgr, c->target); | |
583 | if (!ofservice) { | |
1ea9e609 BP |
584 | VLOG_INFO("%s: added service controller \"%s\"", |
585 | mgr->name, c->target); | |
90ef0206 SH |
586 | add = true; |
587 | } else if (ofservice->allowed_versions != allowed_versions) { | |
588 | VLOG_INFO("%s: re-added service controller \"%s\"", | |
589 | mgr->name, c->target); | |
590 | ofservice_destroy(mgr, ofservice); | |
591 | add = true; | |
592 | } | |
593 | if (add) { | |
1d9ffc17 | 594 | ofservice_create(mgr, c->target, allowed_versions, c->dscp); |
19a87e36 BP |
595 | } |
596 | } else { | |
597 | VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"", | |
598 | mgr->name, c->target); | |
599 | continue; | |
600 | } | |
601 | ||
602 | shash_add_once(&new_controllers, c->target, &controllers[i]); | |
603 | } | |
604 | ||
605 | /* Delete controllers that are no longer configured. | |
606 | * Update configuration of all now-existing controllers. */ | |
19a87e36 | 607 | HMAP_FOR_EACH_SAFE (ofconn, next_ofconn, hmap_node, &mgr->controllers) { |
1ea9e609 | 608 | const char *target = ofconn_get_target(ofconn); |
19a87e36 BP |
609 | struct ofproto_controller *c; |
610 | ||
1ea9e609 | 611 | c = shash_find_data(&new_controllers, target); |
19a87e36 | 612 | if (!c) { |
1ea9e609 BP |
613 | VLOG_INFO("%s: removed primary controller \"%s\"", |
614 | mgr->name, target); | |
19a87e36 BP |
615 | ofconn_destroy(ofconn); |
616 | } else { | |
617 | ofconn_reconfigure(ofconn, c); | |
618 | } | |
619 | } | |
620 | ||
621 | /* Delete services that are no longer configured. | |
622 | * Update configuration of all now-existing services. */ | |
623 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, node, &mgr->services) { | |
1ea9e609 | 624 | const char *target = pvconn_get_name(ofservice->pvconn); |
19a87e36 BP |
625 | struct ofproto_controller *c; |
626 | ||
1ea9e609 | 627 | c = shash_find_data(&new_controllers, target); |
19a87e36 | 628 | if (!c) { |
1ea9e609 BP |
629 | VLOG_INFO("%s: removed service controller \"%s\"", |
630 | mgr->name, target); | |
19a87e36 BP |
631 | ofservice_destroy(mgr, ofservice); |
632 | } else { | |
633 | ofservice_reconfigure(ofservice, c); | |
634 | } | |
635 | } | |
636 | ||
637 | shash_destroy(&new_controllers); | |
638 | ||
c7be3f55 BP |
639 | ovs_mutex_unlock(&ofproto_mutex); |
640 | ||
19a87e36 BP |
641 | update_in_band_remotes(mgr); |
642 | update_fail_open(mgr); | |
08fd19f0 BP |
643 | if (had_controllers != connmgr_has_controllers(mgr)) { |
644 | ofproto_flush_flows(mgr->ofproto); | |
645 | } | |
19a87e36 BP |
646 | } |
647 | ||
648 | /* Drops the connections between 'mgr' and all of its primary and secondary | |
649 | * controllers, forcing them to reconnect. */ | |
650 | void | |
651 | connmgr_reconnect(const struct connmgr *mgr) | |
652 | { | |
653 | struct ofconn *ofconn; | |
654 | ||
655 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
656 | rconn_reconnect(ofconn->rconn); | |
657 | } | |
658 | } | |
659 | ||
660 | /* Sets the "snoops" for 'mgr' to the pvconn targets listed in 'snoops'. | |
661 | * | |
662 | * A "snoop" is a pvconn to which every OpenFlow message to or from the most | |
663 | * important controller on 'mgr' is mirrored. */ | |
664 | int | |
81e2083f | 665 | connmgr_set_snoops(struct connmgr *mgr, const struct sset *snoops) |
19a87e36 BP |
666 | { |
667 | return set_pvconns(&mgr->snoops, &mgr->n_snoops, snoops); | |
668 | } | |
669 | ||
670 | /* Adds each of the snoops currently configured on 'mgr' to 'snoops'. */ | |
671 | void | |
81e2083f | 672 | connmgr_get_snoops(const struct connmgr *mgr, struct sset *snoops) |
19a87e36 BP |
673 | { |
674 | size_t i; | |
675 | ||
676 | for (i = 0; i < mgr->n_snoops; i++) { | |
81e2083f | 677 | sset_add(snoops, pvconn_get_name(mgr->snoops[i])); |
19a87e36 BP |
678 | } |
679 | } | |
680 | ||
81e2083f BP |
681 | /* Returns true if 'mgr' has at least one snoop, false if it has none. */ |
682 | bool | |
683 | connmgr_has_snoops(const struct connmgr *mgr) | |
684 | { | |
685 | return mgr->n_snoops > 0; | |
686 | } | |
687 | ||
19a87e36 BP |
688 | /* Creates a new controller for 'target' in 'mgr'. update_controller() needs |
689 | * to be called later to finish the new ofconn's configuration. */ | |
690 | static void | |
1d9ffc17 SH |
691 | add_controller(struct connmgr *mgr, const char *target, uint8_t dscp, |
692 | uint32_t allowed_versions) | |
3b0c6b56 | 693 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 BP |
694 | { |
695 | char *name = ofconn_make_name(mgr, target); | |
696 | struct ofconn *ofconn; | |
697 | ||
1d9ffc17 | 698 | ofconn = ofconn_create(mgr, rconn_create(5, 8, dscp, allowed_versions), |
6042457b | 699 | OFCONN_PRIMARY, true); |
19a87e36 | 700 | ofconn->pktbuf = pktbuf_create(); |
19a87e36 BP |
701 | rconn_connect(ofconn->rconn, target, name); |
702 | hmap_insert(&mgr->controllers, &ofconn->hmap_node, hash_string(target, 0)); | |
703 | ||
704 | free(name); | |
705 | } | |
706 | ||
707 | static struct ofconn * | |
708 | find_controller_by_target(struct connmgr *mgr, const char *target) | |
709 | { | |
710 | struct ofconn *ofconn; | |
711 | ||
712 | HMAP_FOR_EACH_WITH_HASH (ofconn, hmap_node, | |
713 | hash_string(target, 0), &mgr->controllers) { | |
714 | if (!strcmp(ofconn_get_target(ofconn), target)) { | |
715 | return ofconn; | |
716 | } | |
717 | } | |
718 | return NULL; | |
719 | } | |
720 | ||
721 | static void | |
722 | update_in_band_remotes(struct connmgr *mgr) | |
723 | { | |
724 | struct sockaddr_in *addrs; | |
725 | size_t max_addrs, n_addrs; | |
726 | struct ofconn *ofconn; | |
727 | size_t i; | |
728 | ||
729 | /* Allocate enough memory for as many remotes as we could possibly have. */ | |
730 | max_addrs = mgr->n_extra_remotes + hmap_count(&mgr->controllers); | |
731 | addrs = xmalloc(max_addrs * sizeof *addrs); | |
732 | n_addrs = 0; | |
733 | ||
734 | /* Add all the remotes. */ | |
735 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
ac4c900d | 736 | const char *target = rconn_get_target(ofconn->rconn); |
02334943 JR |
737 | union { |
738 | struct sockaddr_storage ss; | |
739 | struct sockaddr_in in; | |
740 | } sa; | |
19a87e36 | 741 | |
e731d71b | 742 | if (ofconn->band == OFPROTO_IN_BAND |
d4763d1d | 743 | && stream_parse_target_with_default_port(target, OFP_PORT, &sa.ss) |
02334943 JR |
744 | && sa.ss.ss_family == AF_INET) { |
745 | addrs[n_addrs++] = sa.in; | |
19a87e36 BP |
746 | } |
747 | } | |
748 | for (i = 0; i < mgr->n_extra_remotes; i++) { | |
749 | addrs[n_addrs++] = mgr->extra_in_band_remotes[i]; | |
750 | } | |
751 | ||
752 | /* Create or update or destroy in-band. */ | |
753 | if (n_addrs) { | |
754 | if (!mgr->in_band) { | |
755 | in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band); | |
756 | } | |
19a87e36 | 757 | in_band_set_queue(mgr->in_band, mgr->in_band_queue); |
19a87e36 | 758 | } else { |
6da1e809 BP |
759 | /* in_band_run() needs a chance to delete any existing in-band flows. |
760 | * We will destroy mgr->in_band after it's done with that. */ | |
761 | } | |
762 | if (mgr->in_band) { | |
763 | in_band_set_remotes(mgr->in_band, addrs, n_addrs); | |
19a87e36 BP |
764 | } |
765 | ||
766 | /* Clean up. */ | |
767 | free(addrs); | |
768 | } | |
769 | ||
770 | static void | |
771 | update_fail_open(struct connmgr *mgr) | |
feb8a80b | 772 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 BP |
773 | { |
774 | if (connmgr_has_controllers(mgr) | |
775 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
776 | if (!mgr->fail_open) { | |
777 | mgr->fail_open = fail_open_create(mgr->ofproto, mgr); | |
778 | } | |
779 | } else { | |
780 | fail_open_destroy(mgr->fail_open); | |
781 | mgr->fail_open = NULL; | |
782 | } | |
783 | } | |
784 | ||
785 | static int | |
786 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
81e2083f | 787 | const struct sset *sset) |
19a87e36 BP |
788 | { |
789 | struct pvconn **pvconns = *pvconnsp; | |
790 | size_t n_pvconns = *n_pvconnsp; | |
81e2083f | 791 | const char *name; |
19a87e36 BP |
792 | int retval = 0; |
793 | size_t i; | |
794 | ||
795 | for (i = 0; i < n_pvconns; i++) { | |
796 | pvconn_close(pvconns[i]); | |
797 | } | |
798 | free(pvconns); | |
799 | ||
81e2083f | 800 | pvconns = xmalloc(sset_count(sset) * sizeof *pvconns); |
19a87e36 | 801 | n_pvconns = 0; |
81e2083f | 802 | SSET_FOR_EACH (name, sset) { |
19a87e36 BP |
803 | struct pvconn *pvconn; |
804 | int error; | |
82c8c53c | 805 | error = pvconn_open(name, 0, 0, &pvconn); |
19a87e36 BP |
806 | if (!error) { |
807 | pvconns[n_pvconns++] = pvconn; | |
808 | } else { | |
10a89ef0 | 809 | VLOG_ERR("failed to listen on %s: %s", name, ovs_strerror(error)); |
19a87e36 BP |
810 | if (!retval) { |
811 | retval = error; | |
812 | } | |
813 | } | |
814 | } | |
815 | ||
816 | *pvconnsp = pvconns; | |
817 | *n_pvconnsp = n_pvconns; | |
818 | ||
819 | return retval; | |
820 | } | |
821 | ||
822 | /* Returns a "preference level" for snooping 'ofconn'. A higher return value | |
823 | * means that 'ofconn' is more interesting for monitoring than a lower return | |
824 | * value. */ | |
825 | static int | |
826 | snoop_preference(const struct ofconn *ofconn) | |
827 | { | |
828 | switch (ofconn->role) { | |
f4f1ea7e | 829 | case OFPCR12_ROLE_MASTER: |
19a87e36 | 830 | return 3; |
f4f1ea7e | 831 | case OFPCR12_ROLE_EQUAL: |
19a87e36 | 832 | return 2; |
f4f1ea7e | 833 | case OFPCR12_ROLE_SLAVE: |
19a87e36 | 834 | return 1; |
f4f1ea7e | 835 | case OFPCR12_ROLE_NOCHANGE: |
19a87e36 BP |
836 | default: |
837 | /* Shouldn't happen. */ | |
838 | return 0; | |
839 | } | |
840 | } | |
841 | ||
842 | /* One of 'mgr''s "snoop" pvconns has accepted a new connection on 'vconn'. | |
843 | * Connects this vconn to a controller. */ | |
844 | static void | |
845 | add_snooper(struct connmgr *mgr, struct vconn *vconn) | |
846 | { | |
847 | struct ofconn *ofconn, *best; | |
848 | ||
849 | /* Pick a controller for monitoring. */ | |
850 | best = NULL; | |
851 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
852 | if (ofconn->type == OFCONN_PRIMARY | |
853 | && (!best || snoop_preference(ofconn) > snoop_preference(best))) { | |
854 | best = ofconn; | |
855 | } | |
856 | } | |
857 | ||
858 | if (best) { | |
859 | rconn_add_monitor(best->rconn, vconn); | |
860 | } else { | |
861 | VLOG_INFO_RL(&rl, "no controller connection to snoop"); | |
862 | vconn_close(vconn); | |
863 | } | |
864 | } | |
865 | \f | |
866 | /* Public ofconn functions. */ | |
867 | ||
868 | /* Returns the connection type, either OFCONN_PRIMARY or OFCONN_SERVICE. */ | |
869 | enum ofconn_type | |
870 | ofconn_get_type(const struct ofconn *ofconn) | |
871 | { | |
872 | return ofconn->type; | |
873 | } | |
874 | ||
147cc9d3 BP |
875 | /* If a master election id is defined, stores it into '*idp' and returns |
876 | * true. Otherwise, stores UINT64_MAX into '*idp' and returns false. */ | |
877 | bool | |
878 | ofconn_get_master_election_id(const struct ofconn *ofconn, uint64_t *idp) | |
879 | { | |
880 | *idp = (ofconn->connmgr->master_election_id_defined | |
881 | ? ofconn->connmgr->master_election_id | |
882 | : UINT64_MAX); | |
883 | return ofconn->connmgr->master_election_id_defined; | |
884 | } | |
885 | ||
6ea4776b JR |
886 | /* Sets the master election id. |
887 | * | |
888 | * Returns true if successful, false if the id is stale | |
889 | */ | |
890 | bool | |
891 | ofconn_set_master_election_id(struct ofconn *ofconn, uint64_t id) | |
892 | { | |
893 | if (ofconn->connmgr->master_election_id_defined | |
894 | && | |
895 | /* Unsigned difference interpreted as a two's complement signed | |
896 | * value */ | |
897 | (int64_t)(id - ofconn->connmgr->master_election_id) < 0) { | |
898 | return false; | |
899 | } | |
900 | ofconn->connmgr->master_election_id = id; | |
901 | ofconn->connmgr->master_election_id_defined = true; | |
902 | ||
903 | return true; | |
904 | } | |
905 | ||
19a87e36 BP |
906 | /* Returns the role configured for 'ofconn'. |
907 | * | |
f4f1ea7e BP |
908 | * The default role, if no other role has been set, is OFPCR12_ROLE_EQUAL. */ |
909 | enum ofp12_controller_role | |
19a87e36 BP |
910 | ofconn_get_role(const struct ofconn *ofconn) |
911 | { | |
912 | return ofconn->role; | |
913 | } | |
914 | ||
00467f73 AC |
915 | void |
916 | ofconn_send_role_status(struct ofconn *ofconn, uint32_t role, uint8_t reason) | |
917 | { | |
918 | struct ofputil_role_status status; | |
919 | struct ofpbuf *buf; | |
920 | ||
921 | status.reason = reason; | |
922 | status.role = role; | |
923 | ofconn_get_master_election_id(ofconn, &status.generation_id); | |
924 | ||
925 | buf = ofputil_encode_role_status(&status, ofconn_get_protocol(ofconn)); | |
6751a4b4 BP |
926 | if (buf) { |
927 | ofconn_send(ofconn, buf, NULL); | |
928 | } | |
00467f73 AC |
929 | } |
930 | ||
f4f1ea7e BP |
931 | /* Changes 'ofconn''s role to 'role'. If 'role' is OFPCR12_ROLE_MASTER then |
932 | * any existing master is demoted to a slave. */ | |
19a87e36 | 933 | void |
f4f1ea7e | 934 | ofconn_set_role(struct ofconn *ofconn, enum ofp12_controller_role role) |
19a87e36 | 935 | { |
00467f73 | 936 | if (role != ofconn->role && role == OFPCR12_ROLE_MASTER) { |
19a87e36 BP |
937 | struct ofconn *other; |
938 | ||
ab66e29f | 939 | LIST_FOR_EACH (other, node, &ofconn->connmgr->all_conns) { |
f4f1ea7e BP |
940 | if (other->role == OFPCR12_ROLE_MASTER) { |
941 | other->role = OFPCR12_ROLE_SLAVE; | |
00467f73 | 942 | ofconn_send_role_status(other, OFPCR12_ROLE_SLAVE, OFPCRR_MASTER_REQUEST); |
19a87e36 BP |
943 | } |
944 | } | |
945 | } | |
946 | ofconn->role = role; | |
947 | } | |
948 | ||
f0fd1a17 | 949 | void |
80d5aefd | 950 | ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool enable) |
f0fd1a17 | 951 | { |
80d5aefd BP |
952 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
953 | if (enable) { | |
954 | ofconn->master_async_config[OAM_PACKET_IN] |= bit; | |
955 | } else { | |
956 | ofconn->master_async_config[OAM_PACKET_IN] &= ~bit; | |
957 | } | |
f0fd1a17 PS |
958 | } |
959 | ||
960 | bool | |
961 | ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn) | |
962 | { | |
80d5aefd BP |
963 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
964 | return (ofconn->master_async_config[OAM_PACKET_IN] & bit) != 0; | |
f0fd1a17 PS |
965 | } |
966 | ||
27527aa0 | 967 | /* Returns the currently configured protocol for 'ofconn', one of OFPUTIL_P_*. |
19a87e36 | 968 | * |
eb12aa89 BP |
969 | * Returns OFPUTIL_P_NONE, which is not a valid protocol, if 'ofconn' hasn't |
970 | * completed version negotiation. This can't happen if at least one OpenFlow | |
971 | * message, other than OFPT_HELLO, has been received on the connection (such as | |
972 | * in ofproto.c's message handling code), since version negotiation is a | |
973 | * prerequisite for starting to receive messages. This means that | |
974 | * OFPUTIL_P_NONE is a special case that most callers need not worry about. */ | |
27527aa0 | 975 | enum ofputil_protocol |
e3d560db | 976 | ofconn_get_protocol(const struct ofconn *ofconn) |
19a87e36 | 977 | { |
eb12aa89 BP |
978 | if (ofconn->protocol == OFPUTIL_P_NONE && |
979 | rconn_is_connected(ofconn->rconn)) { | |
980 | int version = rconn_get_version(ofconn->rconn); | |
981 | if (version > 0) { | |
982 | ofconn_set_protocol(CONST_CAST(struct ofconn *, ofconn), | |
983 | ofputil_protocol_from_ofp_version(version)); | |
984 | } | |
985 | } | |
986 | ||
27527aa0 | 987 | return ofconn->protocol; |
19a87e36 BP |
988 | } |
989 | ||
27527aa0 BP |
990 | /* Sets the protocol for 'ofconn' to 'protocol' (one of OFPUTIL_P_*). |
991 | * | |
992 | * (This doesn't actually send anything to accomplish this. Presumably the | |
993 | * caller already did that.) */ | |
19a87e36 | 994 | void |
27527aa0 | 995 | ofconn_set_protocol(struct ofconn *ofconn, enum ofputil_protocol protocol) |
19a87e36 | 996 | { |
27527aa0 | 997 | ofconn->protocol = protocol; |
3a11fd5b SS |
998 | if (!(protocol & OFPUTIL_P_OF14_UP)) { |
999 | uint32_t *master = ofconn->master_async_config; | |
1000 | uint32_t *slave = ofconn->slave_async_config; | |
1001 | ||
029ca940 SS |
1002 | /* OFPR_ACTION_SET is not supported before OF1.4 */ |
1003 | master[OAM_PACKET_IN] &= ~(1u << OFPR_ACTION_SET); | |
1004 | slave [OAM_PACKET_IN] &= ~(1u << OFPR_ACTION_SET); | |
1005 | ||
3a11fd5b SS |
1006 | /* OFPR_GROUP is not supported before OF1.4 */ |
1007 | master[OAM_PACKET_IN] &= ~(1u << OFPR_GROUP); | |
1008 | slave [OAM_PACKET_IN] &= ~(1u << OFPR_GROUP); | |
1009 | } | |
19a87e36 BP |
1010 | } |
1011 | ||
54834960 EJ |
1012 | /* Returns the currently configured packet in format for 'ofconn', one of |
1013 | * NXPIF_*. | |
1014 | * | |
1015 | * The default, if no other format has been set, is NXPIF_OPENFLOW10. */ | |
1016 | enum nx_packet_in_format | |
1017 | ofconn_get_packet_in_format(struct ofconn *ofconn) | |
1018 | { | |
1019 | return ofconn->packet_in_format; | |
1020 | } | |
1021 | ||
1022 | /* Sets the packet in format for 'ofconn' to 'packet_in_format' (one of | |
1023 | * NXPIF_*). */ | |
1024 | void | |
1025 | ofconn_set_packet_in_format(struct ofconn *ofconn, | |
1026 | enum nx_packet_in_format packet_in_format) | |
1027 | { | |
1028 | ofconn->packet_in_format = packet_in_format; | |
1029 | } | |
1030 | ||
a7349929 BP |
1031 | /* Sets the controller connection ID for 'ofconn' to 'controller_id'. |
1032 | * | |
1033 | * The connection controller ID is used for OFPP_CONTROLLER and | |
1034 | * NXAST_CONTROLLER actions. See "struct nx_action_controller" for details. */ | |
1035 | void | |
1036 | ofconn_set_controller_id(struct ofconn *ofconn, uint16_t controller_id) | |
1037 | { | |
1038 | ofconn->controller_id = controller_id; | |
1039 | } | |
1040 | ||
19a87e36 BP |
1041 | /* Returns the default miss send length for 'ofconn'. */ |
1042 | int | |
1043 | ofconn_get_miss_send_len(const struct ofconn *ofconn) | |
1044 | { | |
1045 | return ofconn->miss_send_len; | |
1046 | } | |
1047 | ||
1048 | /* Sets the default miss send length for 'ofconn' to 'miss_send_len'. */ | |
1049 | void | |
1050 | ofconn_set_miss_send_len(struct ofconn *ofconn, int miss_send_len) | |
1051 | { | |
1052 | ofconn->miss_send_len = miss_send_len; | |
1053 | } | |
1054 | ||
80d5aefd BP |
1055 | void |
1056 | ofconn_set_async_config(struct ofconn *ofconn, | |
1057 | const uint32_t master_masks[OAM_N_TYPES], | |
1058 | const uint32_t slave_masks[OAM_N_TYPES]) | |
1059 | { | |
1060 | size_t size = sizeof ofconn->master_async_config; | |
1061 | memcpy(ofconn->master_async_config, master_masks, size); | |
1062 | memcpy(ofconn->slave_async_config, slave_masks, size); | |
1063 | } | |
1064 | ||
c423b3b3 AC |
1065 | void |
1066 | ofconn_get_async_config(struct ofconn *ofconn, | |
1067 | uint32_t *master_masks, uint32_t *slave_masks) | |
1068 | { | |
1069 | size_t size = sizeof ofconn->master_async_config; | |
3a11fd5b SS |
1070 | |
1071 | /* Make sure we know the protocol version and the async_config | |
1072 | * masks are properly updated by calling ofconn_get_protocol() */ | |
1073 | if (OFPUTIL_P_NONE == ofconn_get_protocol(ofconn)){ | |
1074 | OVS_NOT_REACHED(); | |
1075 | } | |
1076 | ||
c423b3b3 AC |
1077 | memcpy(master_masks, ofconn->master_async_config, size); |
1078 | memcpy(slave_masks, ofconn->slave_async_config, size); | |
1079 | } | |
1080 | ||
19a87e36 BP |
1081 | /* Sends 'msg' on 'ofconn', accounting it as a reply. (If there is a |
1082 | * sufficient number of OpenFlow replies in-flight on a single ofconn, then the | |
1083 | * connmgr will stop accepting new OpenFlow requests on that ofconn until the | |
1084 | * controller has accepted some of the replies.) */ | |
1085 | void | |
1086 | ofconn_send_reply(const struct ofconn *ofconn, struct ofpbuf *msg) | |
1087 | { | |
1088 | ofconn_send(ofconn, msg, ofconn->reply_counter); | |
1089 | } | |
1090 | ||
63f2140a BP |
1091 | /* Sends each of the messages in list 'replies' on 'ofconn' in order, |
1092 | * accounting them as replies. */ | |
1093 | void | |
ca6ba700 | 1094 | ofconn_send_replies(const struct ofconn *ofconn, struct ovs_list *replies) |
63f2140a | 1095 | { |
5f03c983 | 1096 | struct ofpbuf *reply; |
63f2140a | 1097 | |
5f03c983 | 1098 | LIST_FOR_EACH_POP (reply, list_node, replies) { |
63f2140a BP |
1099 | ofconn_send_reply(ofconn, reply); |
1100 | } | |
1101 | } | |
1102 | ||
90bf1e07 | 1103 | /* Sends 'error' on 'ofconn', as a reply to 'request'. Only at most the |
1be5ff75 BP |
1104 | * first 64 bytes of 'request' are used. */ |
1105 | void | |
1106 | ofconn_send_error(const struct ofconn *ofconn, | |
90bf1e07 | 1107 | const struct ofp_header *request, enum ofperr error) |
1be5ff75 | 1108 | { |
07c8ec21 | 1109 | static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10); |
90bf1e07 | 1110 | struct ofpbuf *reply; |
76589937 | 1111 | |
90bf1e07 | 1112 | reply = ofperr_encode_reply(error, request); |
07c8ec21 BP |
1113 | if (!VLOG_DROP_INFO(&err_rl)) { |
1114 | const char *type_name; | |
1115 | size_t request_len; | |
1116 | enum ofpraw raw; | |
1117 | ||
1118 | request_len = ntohs(request->length); | |
1119 | type_name = (!ofpraw_decode_partial(&raw, request, | |
1120 | MIN(64, request_len)) | |
1121 | ? ofpraw_get_name(raw) | |
1122 | : "invalid"); | |
1123 | ||
1124 | VLOG_INFO("%s: sending %s error reply to %s message", | |
1125 | rconn_get_name(ofconn->rconn), ofperr_to_string(error), | |
1126 | type_name); | |
1127 | } | |
1128 | ofconn_send_reply(ofconn, reply); | |
1be5ff75 BP |
1129 | } |
1130 | ||
19a87e36 | 1131 | /* Same as pktbuf_retrieve(), using the pktbuf owned by 'ofconn'. */ |
90bf1e07 | 1132 | enum ofperr |
19a87e36 | 1133 | ofconn_pktbuf_retrieve(struct ofconn *ofconn, uint32_t id, |
cf62fa4c | 1134 | struct dp_packet **bufferp, ofp_port_t *in_port) |
19a87e36 BP |
1135 | { |
1136 | return pktbuf_retrieve(ofconn->pktbuf, id, bufferp, in_port); | |
1137 | } | |
7ee20df1 | 1138 | |
696d1bcf BP |
1139 | /* Reports that a flow_mod operation of the type specified by 'command' was |
1140 | * successfully executed by 'ofconn', so that the connmgr can log it. */ | |
1141 | void | |
1142 | ofconn_report_flow_mod(struct ofconn *ofconn, | |
1143 | enum ofp_flow_mod_command command) | |
1144 | { | |
1145 | long long int now; | |
1146 | ||
1147 | switch (command) { | |
1148 | case OFPFC_ADD: | |
1149 | ofconn->n_add++; | |
1150 | break; | |
1151 | ||
1152 | case OFPFC_MODIFY: | |
1153 | case OFPFC_MODIFY_STRICT: | |
1154 | ofconn->n_modify++; | |
1155 | break; | |
1156 | ||
1157 | case OFPFC_DELETE: | |
1158 | case OFPFC_DELETE_STRICT: | |
1159 | ofconn->n_delete++; | |
1160 | break; | |
1161 | } | |
1162 | ||
1163 | now = time_msec(); | |
1164 | if (ofconn->next_op_report == LLONG_MAX) { | |
1165 | ofconn->first_op = now; | |
1166 | ofconn->next_op_report = MAX(now + 10 * 1000, ofconn->op_backoff); | |
1167 | ofconn->op_backoff = ofconn->next_op_report + 60 * 1000; | |
1168 | } | |
1169 | ofconn->last_op = now; | |
1170 | } | |
ff09bc08 JR |
1171 | \f |
1172 | /* OpenFlow 1.4 bundles. */ | |
696d1bcf | 1173 | |
ff09bc08 JR |
1174 | static inline uint32_t |
1175 | bundle_hash(uint32_t id) | |
777af88d | 1176 | { |
ff09bc08 | 1177 | return hash_int(id, 0); |
777af88d AC |
1178 | } |
1179 | ||
ff09bc08 JR |
1180 | struct ofp_bundle * |
1181 | ofconn_get_bundle(struct ofconn *ofconn, uint32_t id) | |
1182 | { | |
1183 | struct ofp_bundle *bundle; | |
1184 | ||
1185 | HMAP_FOR_EACH_IN_BUCKET(bundle, node, bundle_hash(id), &ofconn->bundles) { | |
1186 | if (bundle->id == id) { | |
1187 | return bundle; | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | return NULL; | |
1192 | } | |
1193 | ||
1194 | enum ofperr | |
1195 | ofconn_insert_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) | |
1196 | { | |
1197 | /* XXX: Check the limit of open bundles */ | |
1198 | ||
1199 | hmap_insert(&ofconn->bundles, &bundle->node, bundle_hash(bundle->id)); | |
1200 | ||
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | enum ofperr | |
1205 | ofconn_remove_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) | |
1206 | { | |
1207 | hmap_remove(&ofconn->bundles, &bundle->node); | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | static void | |
1213 | bundle_remove_all(struct ofconn *ofconn) | |
1214 | { | |
1215 | struct ofp_bundle *b, *next; | |
1216 | ||
1217 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { | |
1f42be1c | 1218 | ofp_bundle_remove__(ofconn, b, false); |
ff09bc08 JR |
1219 | } |
1220 | } | |
19a87e36 BP |
1221 | \f |
1222 | /* Private ofconn functions. */ | |
1223 | ||
1224 | static const char * | |
1225 | ofconn_get_target(const struct ofconn *ofconn) | |
1226 | { | |
1227 | return rconn_get_target(ofconn->rconn); | |
1228 | } | |
1229 | ||
1230 | static struct ofconn * | |
9886b662 BP |
1231 | ofconn_create(struct connmgr *mgr, struct rconn *rconn, enum ofconn_type type, |
1232 | bool enable_async_msgs) | |
19a87e36 | 1233 | { |
c4b31872 BP |
1234 | struct ofconn *ofconn; |
1235 | ||
1236 | ofconn = xzalloc(sizeof *ofconn); | |
19a87e36 BP |
1237 | ofconn->connmgr = mgr; |
1238 | list_push_back(&mgr->all_conns, &ofconn->node); | |
1239 | ofconn->rconn = rconn; | |
1240 | ofconn->type = type; | |
9886b662 | 1241 | ofconn->enable_async_msgs = enable_async_msgs; |
c4b31872 | 1242 | |
2b07c8b1 BP |
1243 | hmap_init(&ofconn->monitors); |
1244 | list_init(&ofconn->updates); | |
1245 | ||
777af88d AC |
1246 | hmap_init(&ofconn->bundles); |
1247 | ||
c4b31872 BP |
1248 | ofconn_flush(ofconn); |
1249 | ||
19a87e36 BP |
1250 | return ofconn; |
1251 | } | |
1252 | ||
c4b31872 BP |
1253 | /* Clears all of the state in 'ofconn' that should not persist from one |
1254 | * connection to the next. */ | |
7ee20df1 BP |
1255 | static void |
1256 | ofconn_flush(struct ofconn *ofconn) | |
3b0c6b56 | 1257 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 1258 | { |
2b07c8b1 | 1259 | struct ofmonitor *monitor, *next_monitor; |
c4b31872 BP |
1260 | int i; |
1261 | ||
696d1bcf BP |
1262 | ofconn_log_flow_mods(ofconn); |
1263 | ||
f4f1ea7e | 1264 | ofconn->role = OFPCR12_ROLE_EQUAL; |
eb12aa89 | 1265 | ofconn_set_protocol(ofconn, OFPUTIL_P_NONE); |
c4b31872 | 1266 | ofconn->packet_in_format = NXPIF_OPENFLOW10; |
c4b31872 | 1267 | |
c4b31872 BP |
1268 | rconn_packet_counter_destroy(ofconn->packet_in_counter); |
1269 | ofconn->packet_in_counter = rconn_packet_counter_create(); | |
1270 | for (i = 0; i < N_SCHEDULERS; i++) { | |
1271 | if (ofconn->schedulers[i]) { | |
1272 | int rate, burst; | |
1273 | ||
1274 | pinsched_get_limits(ofconn->schedulers[i], &rate, &burst); | |
1275 | pinsched_destroy(ofconn->schedulers[i]); | |
1276 | ofconn->schedulers[i] = pinsched_create(rate, burst); | |
1277 | } | |
1278 | } | |
1279 | if (ofconn->pktbuf) { | |
1280 | pktbuf_destroy(ofconn->pktbuf); | |
1281 | ofconn->pktbuf = pktbuf_create(); | |
1282 | } | |
1283 | ofconn->miss_send_len = (ofconn->type == OFCONN_PRIMARY | |
1284 | ? OFP_DEFAULT_MISS_SEND_LEN | |
1285 | : 0); | |
a7349929 | 1286 | ofconn->controller_id = 0; |
c4b31872 BP |
1287 | |
1288 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
1289 | ofconn->reply_counter = rconn_packet_counter_create(); | |
80d5aefd | 1290 | |
9886b662 BP |
1291 | if (ofconn->enable_async_msgs) { |
1292 | uint32_t *master = ofconn->master_async_config; | |
1293 | uint32_t *slave = ofconn->slave_async_config; | |
1294 | ||
1295 | /* "master" and "other" roles get all asynchronous messages by default, | |
1296 | * except that the controller needs to enable nonstandard "packet-in" | |
1297 | * reasons itself. */ | |
3a11fd5b SS |
1298 | master[OAM_PACKET_IN] = ((1u << OFPR_NO_MATCH) |
1299 | | (1u << OFPR_ACTION) | |
029ca940 | 1300 | | (1u << OFPR_ACTION_SET) |
3a11fd5b | 1301 | | (1u << OFPR_GROUP)); |
9886b662 BP |
1302 | master[OAM_PORT_STATUS] = ((1u << OFPPR_ADD) |
1303 | | (1u << OFPPR_DELETE) | |
1304 | | (1u << OFPPR_MODIFY)); | |
1305 | master[OAM_FLOW_REMOVED] = ((1u << OFPRR_IDLE_TIMEOUT) | |
1306 | | (1u << OFPRR_HARD_TIMEOUT) | |
1307 | | (1u << OFPRR_DELETE)); | |
1308 | ||
1309 | /* "slave" role gets port status updates by default. */ | |
1310 | slave[OAM_PACKET_IN] = 0; | |
1311 | slave[OAM_PORT_STATUS] = ((1u << OFPPR_ADD) | |
1312 | | (1u << OFPPR_DELETE) | |
1313 | | (1u << OFPPR_MODIFY)); | |
1314 | slave[OAM_FLOW_REMOVED] = 0; | |
1315 | } else { | |
1316 | memset(ofconn->master_async_config, 0, | |
1317 | sizeof ofconn->master_async_config); | |
1318 | memset(ofconn->slave_async_config, 0, | |
1319 | sizeof ofconn->slave_async_config); | |
1320 | } | |
2b07c8b1 | 1321 | |
696d1bcf BP |
1322 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; |
1323 | ofconn->first_op = ofconn->last_op = LLONG_MIN; | |
1324 | ofconn->next_op_report = LLONG_MAX; | |
1325 | ofconn->op_backoff = LLONG_MIN; | |
1326 | ||
2b07c8b1 BP |
1327 | HMAP_FOR_EACH_SAFE (monitor, next_monitor, ofconn_node, |
1328 | &ofconn->monitors) { | |
1329 | ofmonitor_destroy(monitor); | |
1330 | } | |
1331 | rconn_packet_counter_destroy(ofconn->monitor_counter); | |
1332 | ofconn->monitor_counter = rconn_packet_counter_create(); | |
1333 | ofpbuf_list_delete(&ofconn->updates); /* ...but it should be empty. */ | |
7ee20df1 BP |
1334 | } |
1335 | ||
19a87e36 BP |
1336 | static void |
1337 | ofconn_destroy(struct ofconn *ofconn) | |
3b0c6b56 | 1338 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 1339 | { |
7ee20df1 BP |
1340 | ofconn_flush(ofconn); |
1341 | ||
19a87e36 BP |
1342 | if (ofconn->type == OFCONN_PRIMARY) { |
1343 | hmap_remove(&ofconn->connmgr->controllers, &ofconn->hmap_node); | |
1344 | } | |
1345 | ||
ff09bc08 | 1346 | bundle_remove_all(ofconn); |
475b8f06 | 1347 | hmap_destroy(&ofconn->bundles); |
777af88d | 1348 | |
92bbc96a | 1349 | hmap_destroy(&ofconn->monitors); |
19a87e36 BP |
1350 | list_remove(&ofconn->node); |
1351 | rconn_destroy(ofconn->rconn); | |
1352 | rconn_packet_counter_destroy(ofconn->packet_in_counter); | |
1353 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
1354 | pktbuf_destroy(ofconn->pktbuf); | |
2b07c8b1 | 1355 | rconn_packet_counter_destroy(ofconn->monitor_counter); |
19a87e36 BP |
1356 | free(ofconn); |
1357 | } | |
1358 | ||
1359 | /* Reconfigures 'ofconn' to match 'c'. 'ofconn' and 'c' must have the same | |
1360 | * target. */ | |
1361 | static void | |
1362 | ofconn_reconfigure(struct ofconn *ofconn, const struct ofproto_controller *c) | |
1363 | { | |
1364 | int probe_interval; | |
1365 | ||
1366 | ofconn->band = c->band; | |
065825e9 | 1367 | ofconn->enable_async_msgs = c->enable_async_msgs; |
19a87e36 BP |
1368 | |
1369 | rconn_set_max_backoff(ofconn->rconn, c->max_backoff); | |
1370 | ||
1371 | probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0; | |
1372 | rconn_set_probe_interval(ofconn->rconn, probe_interval); | |
1373 | ||
1374 | ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit); | |
0442efd9 MM |
1375 | |
1376 | /* If dscp value changed reconnect. */ | |
1377 | if (c->dscp != rconn_get_dscp(ofconn->rconn)) { | |
1378 | rconn_set_dscp(ofconn->rconn, c->dscp); | |
1379 | rconn_reconnect(ofconn->rconn); | |
1380 | } | |
19a87e36 BP |
1381 | } |
1382 | ||
7ee20df1 BP |
1383 | /* Returns true if it makes sense for 'ofconn' to receive and process OpenFlow |
1384 | * messages. */ | |
1385 | static bool | |
1386 | ofconn_may_recv(const struct ofconn *ofconn) | |
1387 | { | |
a3d1ff00 | 1388 | int count = rconn_packet_counter_n_packets(ofconn->reply_counter); |
b20f4073 | 1389 | return count < OFCONN_REPLY_MAX; |
7ee20df1 BP |
1390 | } |
1391 | ||
19a87e36 BP |
1392 | static void |
1393 | ofconn_run(struct ofconn *ofconn, | |
b20f4073 | 1394 | void (*handle_openflow)(struct ofconn *, |
e03248b7 | 1395 | const struct ofpbuf *ofp_msg)) |
19a87e36 BP |
1396 | { |
1397 | struct connmgr *mgr = ofconn->connmgr; | |
19a87e36 BP |
1398 | size_t i; |
1399 | ||
1400 | for (i = 0; i < N_SCHEDULERS; i++) { | |
ca6ba700 | 1401 | struct ovs_list txq; |
a6f75961 BP |
1402 | |
1403 | pinsched_run(ofconn->schedulers[i], &txq); | |
1404 | do_send_packet_ins(ofconn, &txq); | |
19a87e36 BP |
1405 | } |
1406 | ||
1407 | rconn_run(ofconn->rconn); | |
1408 | ||
b20f4073 BP |
1409 | /* Limit the number of iterations to avoid starving other tasks. */ |
1410 | for (i = 0; i < 50 && ofconn_may_recv(ofconn); i++) { | |
1411 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); | |
1412 | if (!of_msg) { | |
1413 | break; | |
1414 | } | |
7ee20df1 | 1415 | |
b20f4073 BP |
1416 | if (mgr->fail_open) { |
1417 | fail_open_maybe_recover(mgr->fail_open); | |
19a87e36 | 1418 | } |
19a87e36 | 1419 | |
b20f4073 BP |
1420 | handle_openflow(ofconn, of_msg); |
1421 | ofpbuf_delete(of_msg); | |
1422 | } | |
696d1bcf BP |
1423 | |
1424 | if (time_msec() >= ofconn->next_op_report) { | |
1425 | ofconn_log_flow_mods(ofconn); | |
1426 | } | |
1427 | ||
3b0c6b56 | 1428 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 BP |
1429 | if (!rconn_is_alive(ofconn->rconn)) { |
1430 | ofconn_destroy(ofconn); | |
7ee20df1 BP |
1431 | } else if (!rconn_is_connected(ofconn->rconn)) { |
1432 | ofconn_flush(ofconn); | |
19a87e36 | 1433 | } |
3b0c6b56 | 1434 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
1435 | } |
1436 | ||
1437 | static void | |
b20f4073 | 1438 | ofconn_wait(struct ofconn *ofconn) |
19a87e36 BP |
1439 | { |
1440 | int i; | |
1441 | ||
1442 | for (i = 0; i < N_SCHEDULERS; i++) { | |
1443 | pinsched_wait(ofconn->schedulers[i]); | |
1444 | } | |
1445 | rconn_run_wait(ofconn->rconn); | |
b20f4073 | 1446 | if (ofconn_may_recv(ofconn)) { |
19a87e36 | 1447 | rconn_recv_wait(ofconn->rconn); |
19a87e36 | 1448 | } |
696d1bcf BP |
1449 | if (ofconn->next_op_report != LLONG_MAX) { |
1450 | poll_timer_wait_until(ofconn->next_op_report); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | static void | |
1455 | ofconn_log_flow_mods(struct ofconn *ofconn) | |
1456 | { | |
1457 | int n_flow_mods = ofconn->n_add + ofconn->n_delete + ofconn->n_modify; | |
1458 | if (n_flow_mods) { | |
1459 | long long int ago = (time_msec() - ofconn->first_op) / 1000; | |
1460 | long long int interval = (ofconn->last_op - ofconn->first_op) / 1000; | |
1461 | struct ds s; | |
1462 | ||
1463 | ds_init(&s); | |
1464 | ds_put_format(&s, "%d flow_mods ", n_flow_mods); | |
1465 | if (interval == ago) { | |
1466 | ds_put_format(&s, "in the last %lld s", ago); | |
1467 | } else if (interval) { | |
1468 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1469 | interval, ago); | |
1470 | } else { | |
1471 | ds_put_format(&s, "%lld s ago", ago); | |
1472 | } | |
1473 | ||
1474 | ds_put_cstr(&s, " ("); | |
1475 | if (ofconn->n_add) { | |
1476 | ds_put_format(&s, "%d adds, ", ofconn->n_add); | |
1477 | } | |
1478 | if (ofconn->n_delete) { | |
1479 | ds_put_format(&s, "%d deletes, ", ofconn->n_delete); | |
1480 | } | |
1481 | if (ofconn->n_modify) { | |
1482 | ds_put_format(&s, "%d modifications, ", ofconn->n_modify); | |
1483 | } | |
1484 | s.length -= 2; | |
1485 | ds_put_char(&s, ')'); | |
1486 | ||
1487 | VLOG_INFO("%s: %s", rconn_get_name(ofconn->rconn), ds_cstr(&s)); | |
1488 | ds_destroy(&s); | |
1489 | ||
1490 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; | |
1491 | } | |
1492 | ofconn->next_op_report = LLONG_MAX; | |
19a87e36 BP |
1493 | } |
1494 | ||
80d5aefd BP |
1495 | /* Returns true if 'ofconn' should receive asynchronous messages of the given |
1496 | * OAM_* 'type' and 'reason', which should be a OFPR_* value for OAM_PACKET_IN, | |
1497 | * a OFPPR_* value for OAM_PORT_STATUS, or an OFPRR_* value for | |
1498 | * OAM_FLOW_REMOVED. Returns false if the message should not be sent on | |
1499 | * 'ofconn'. */ | |
19a87e36 | 1500 | static bool |
80d5aefd BP |
1501 | ofconn_receives_async_msg(const struct ofconn *ofconn, |
1502 | enum ofconn_async_msg_type type, | |
1503 | unsigned int reason) | |
19a87e36 | 1504 | { |
80d5aefd BP |
1505 | const uint32_t *async_config; |
1506 | ||
cb22974d BP |
1507 | ovs_assert(reason < 32); |
1508 | ovs_assert((unsigned int) type < OAM_N_TYPES); | |
19a87e36 | 1509 | |
eb12aa89 BP |
1510 | if (ofconn_get_protocol(ofconn) == OFPUTIL_P_NONE |
1511 | || !rconn_is_connected(ofconn->rconn)) { | |
f0fd1a17 | 1512 | return false; |
f0fd1a17 | 1513 | } |
f0fd1a17 | 1514 | |
80d5aefd BP |
1515 | /* Keep the following code in sync with the documentation in the |
1516 | * "Asynchronous Messages" section in DESIGN. */ | |
1517 | ||
1518 | if (ofconn->type == OFCONN_SERVICE && !ofconn->miss_send_len) { | |
1519 | /* Service connections don't get asynchronous messages unless they have | |
1520 | * explicitly asked for them by setting a nonzero miss send length. */ | |
f0fd1a17 | 1521 | return false; |
f0fd1a17 | 1522 | } |
80d5aefd | 1523 | |
f4f1ea7e | 1524 | async_config = (ofconn->role == OFPCR12_ROLE_SLAVE |
80d5aefd BP |
1525 | ? ofconn->slave_async_config |
1526 | : ofconn->master_async_config); | |
1527 | if (!(async_config[type] & (1u << reason))) { | |
1528 | return false; | |
1529 | } | |
1530 | ||
1531 | return true; | |
f0fd1a17 PS |
1532 | } |
1533 | ||
6b83a3c5 SH |
1534 | /* The default "table-miss" behaviour for OpenFlow1.3+ is to drop the |
1535 | * packet rather than to send the packet to the controller. | |
1536 | * | |
1537 | * This function returns false to indicate the packet should be dropped if | |
1538 | * the controller action was the result of the default table-miss behaviour | |
1539 | * and the controller is using OpenFlow1.3+. | |
1540 | * | |
1541 | * Otherwise true is returned to indicate the packet should be forwarded to | |
1542 | * the controller */ | |
1543 | static bool | |
1544 | ofconn_wants_packet_in_on_miss(struct ofconn *ofconn, | |
1545 | const struct ofproto_packet_in *pin) | |
1546 | { | |
1547 | if (pin->miss_type == OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW) { | |
1548 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); | |
1549 | ||
1550 | if (protocol != OFPUTIL_P_NONE | |
3c1bb396 BP |
1551 | && ofputil_protocol_to_ofp_version(protocol) >= OFP13_VERSION |
1552 | && (ofproto_table_get_miss_config(ofconn->connmgr->ofproto, | |
1553 | pin->up.table_id) | |
1554 | == OFPUTIL_TABLE_MISS_DEFAULT)) { | |
1555 | return false; | |
6b83a3c5 SH |
1556 | } |
1557 | } | |
1558 | return true; | |
1559 | } | |
1560 | ||
1561 | /* The default "table-miss" behaviour for OpenFlow1.3+ is to drop the | |
1562 | * packet rather than to send the packet to the controller. | |
1563 | * | |
0474cca3 | 1564 | * This function returns true to indicate that a packet_in message |
6b83a3c5 SH |
1565 | * for a "table-miss" should be sent to at least one controller. |
1566 | * That is there is at least one controller with controller_id 0 | |
1567 | * which connected using an OpenFlow version earlier than OpenFlow1.3. | |
1568 | * | |
1569 | * False otherwise. | |
1570 | * | |
1571 | * This logic assumes that "table-miss" packet_in messages | |
1572 | * are always sent to controller_id 0. */ | |
1573 | bool | |
3fc76ec0 | 1574 | connmgr_wants_packet_in_on_miss(struct connmgr *mgr) OVS_EXCLUDED(ofproto_mutex) |
6b83a3c5 SH |
1575 | { |
1576 | struct ofconn *ofconn; | |
1577 | ||
3fc76ec0 | 1578 | ovs_mutex_lock(&ofproto_mutex); |
6b83a3c5 SH |
1579 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
1580 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); | |
1581 | ||
1582 | if (ofconn->controller_id == 0 && | |
1583 | (protocol == OFPUTIL_P_NONE || | |
1584 | ofputil_protocol_to_ofp_version(protocol) < OFP13_VERSION)) { | |
3fc76ec0 | 1585 | ovs_mutex_unlock(&ofproto_mutex); |
6b83a3c5 SH |
1586 | return true; |
1587 | } | |
1588 | } | |
3fc76ec0 AW |
1589 | ovs_mutex_unlock(&ofproto_mutex); |
1590 | ||
6b83a3c5 SH |
1591 | return false; |
1592 | } | |
1593 | ||
19a87e36 BP |
1594 | /* Returns a human-readable name for an OpenFlow connection between 'mgr' and |
1595 | * 'target', suitable for use in log messages for identifying the connection. | |
1596 | * | |
1597 | * The name is dynamically allocated. The caller should free it (with free()) | |
1598 | * when it is no longer needed. */ | |
1599 | static char * | |
1600 | ofconn_make_name(const struct connmgr *mgr, const char *target) | |
1601 | { | |
1602 | return xasprintf("%s<->%s", mgr->name, target); | |
1603 | } | |
1604 | ||
1605 | static void | |
1606 | ofconn_set_rate_limit(struct ofconn *ofconn, int rate, int burst) | |
1607 | { | |
1608 | int i; | |
1609 | ||
1610 | for (i = 0; i < N_SCHEDULERS; i++) { | |
1611 | struct pinsched **s = &ofconn->schedulers[i]; | |
1612 | ||
1613 | if (rate > 0) { | |
1614 | if (!*s) { | |
1615 | *s = pinsched_create(rate, burst); | |
1616 | } else { | |
1617 | pinsched_set_limits(*s, rate, burst); | |
1618 | } | |
1619 | } else { | |
1620 | pinsched_destroy(*s); | |
1621 | *s = NULL; | |
1622 | } | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | static void | |
1627 | ofconn_send(const struct ofconn *ofconn, struct ofpbuf *msg, | |
1628 | struct rconn_packet_counter *counter) | |
1629 | { | |
982697a4 | 1630 | ofpmsg_update_length(msg); |
acb9da40 | 1631 | rconn_send(ofconn->rconn, msg, counter); |
19a87e36 BP |
1632 | } |
1633 | \f | |
1634 | /* Sending asynchronous messages. */ | |
1635 | ||
cfa955b0 YT |
1636 | static void schedule_packet_in(struct ofconn *, struct ofproto_packet_in, |
1637 | enum ofp_packet_in_reason wire_reason); | |
19a87e36 BP |
1638 | |
1639 | /* Sends an OFPT_PORT_STATUS message with 'opp' and 'reason' to appropriate | |
2a6f78e0 BP |
1640 | * controllers managed by 'mgr'. For messages caused by a controller |
1641 | * OFPT_PORT_MOD, specify 'source' as the controller connection that sent the | |
1642 | * request; otherwise, specify 'source' as NULL. */ | |
19a87e36 | 1643 | void |
2a6f78e0 | 1644 | connmgr_send_port_status(struct connmgr *mgr, struct ofconn *source, |
9e1fd49b | 1645 | const struct ofputil_phy_port *pp, uint8_t reason) |
19a87e36 BP |
1646 | { |
1647 | /* XXX Should limit the number of queued port status change messages. */ | |
9e1fd49b | 1648 | struct ofputil_port_status ps; |
19a87e36 BP |
1649 | struct ofconn *ofconn; |
1650 | ||
9e1fd49b BP |
1651 | ps.reason = reason; |
1652 | ps.desc = *pp; | |
19a87e36 | 1653 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
80d5aefd | 1654 | if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) { |
9e1fd49b | 1655 | struct ofpbuf *msg; |
80d5aefd | 1656 | |
2a6f78e0 BP |
1657 | /* Before 1.5, OpenFlow specified that OFPT_PORT_MOD should not |
1658 | * generate OFPT_PORT_STATUS messages. That requirement was a | |
1659 | * relic of how OpenFlow originally supported a single controller, | |
1660 | * so that one could expect the controller to already know the | |
1661 | * changes it had made. | |
1662 | * | |
1663 | * EXT-338 changes OpenFlow 1.5 OFPT_PORT_MOD to send | |
1664 | * OFPT_PORT_STATUS messages to every controller. This is | |
1665 | * obviously more useful in the multi-controller case. We could | |
1666 | * always implement it that way in OVS, but that would risk | |
1667 | * confusing controllers that are intended for single-controller | |
1668 | * use only. (Imagine a controller that generates an OFPT_PORT_MOD | |
1669 | * in response to any OFPT_PORT_STATUS!) | |
1670 | * | |
1671 | * So this compromises: for OpenFlow 1.4 and earlier, it generates | |
1672 | * OFPT_PORT_STATUS for OFPT_PORT_MOD, but not back to the | |
1673 | * originating controller. In a single-controller environment, in | |
1674 | * particular, this means that it will never generate | |
1675 | * OFPT_PORT_STATUS for OFPT_PORT_MOD at all. */ | |
1676 | if (ofconn == source | |
1677 | && rconn_get_version(ofconn->rconn) < OFP15_VERSION) { | |
1678 | continue; | |
1679 | } | |
1680 | ||
eb12aa89 | 1681 | msg = ofputil_encode_port_status(&ps, ofconn_get_protocol(ofconn)); |
9e1fd49b | 1682 | ofconn_send(ofconn, msg, NULL); |
19a87e36 | 1683 | } |
19a87e36 BP |
1684 | } |
1685 | } | |
1686 | ||
1687 | /* Sends an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message based on 'fr' to | |
1688 | * appropriate controllers managed by 'mgr'. */ | |
1689 | void | |
1690 | connmgr_send_flow_removed(struct connmgr *mgr, | |
1691 | const struct ofputil_flow_removed *fr) | |
1692 | { | |
1693 | struct ofconn *ofconn; | |
1694 | ||
1695 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
80d5aefd BP |
1696 | if (ofconn_receives_async_msg(ofconn, OAM_FLOW_REMOVED, fr->reason)) { |
1697 | struct ofpbuf *msg; | |
1698 | ||
1699 | /* Account flow expirations as replies to OpenFlow requests. That | |
1700 | * works because preventing OpenFlow requests from being processed | |
1701 | * also prevents new flows from being added (and expiring). (It | |
1702 | * also prevents processing OpenFlow requests that would not add | |
1703 | * new flows, so it is imperfect.) */ | |
eb12aa89 | 1704 | msg = ofputil_encode_flow_removed(fr, ofconn_get_protocol(ofconn)); |
80d5aefd | 1705 | ofconn_send_reply(ofconn, msg); |
19a87e36 | 1706 | } |
19a87e36 BP |
1707 | } |
1708 | } | |
1709 | ||
cfa955b0 YT |
1710 | /* Normally a send-to-controller action uses reason OFPR_ACTION. However, in |
1711 | * OpenFlow 1.3 and later, packet_ins generated by a send-to-controller action | |
1712 | * in a "table-miss" flow (one with priority 0 and completely wildcarded) are | |
1713 | * sent as OFPR_NO_MATCH. This function returns the reason that should | |
1714 | * actually be sent on 'ofconn' for 'pin'. */ | |
1715 | static enum ofp_packet_in_reason | |
1716 | wire_reason(struct ofconn *ofconn, const struct ofproto_packet_in *pin) | |
1717 | { | |
3a11fd5b | 1718 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
cfa955b0 | 1719 | |
3a11fd5b SS |
1720 | if (pin->miss_type == OFPROTO_PACKET_IN_MISS_FLOW |
1721 | && pin->up.reason == OFPR_ACTION | |
1722 | && protocol != OFPUTIL_P_NONE | |
1723 | && ofputil_protocol_to_ofp_version(protocol) >= OFP13_VERSION) { | |
1724 | return OFPR_NO_MATCH; | |
1725 | } | |
1726 | ||
1727 | switch (pin->up.reason) { | |
1728 | case OFPR_ACTION_SET: | |
1729 | case OFPR_GROUP: | |
1730 | case OFPR_PACKET_OUT: | |
1731 | if (!(protocol & OFPUTIL_P_OF14_UP)) { | |
1732 | /* Only supported in OF1.4+ */ | |
1733 | return OFPR_ACTION; | |
cfa955b0 | 1734 | } |
3a11fd5b SS |
1735 | /* Fall through. */ |
1736 | case OFPR_NO_MATCH: | |
1737 | case OFPR_ACTION: | |
1738 | case OFPR_INVALID_TTL: | |
1739 | case OFPR_N_REASONS: | |
1740 | default: | |
1741 | return pin->up.reason; | |
cfa955b0 | 1742 | } |
cfa955b0 YT |
1743 | } |
1744 | ||
78bd1cd0 | 1745 | /* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as |
2ed1202f BP |
1746 | * necessary according to their individual configurations. |
1747 | * | |
1748 | * The caller doesn't need to fill in pin->buffer_id or pin->total_len. */ | |
19a87e36 | 1749 | void |
78bd1cd0 | 1750 | connmgr_send_packet_in(struct connmgr *mgr, |
0fb7792a | 1751 | const struct ofproto_packet_in *pin) |
19a87e36 | 1752 | { |
29ebe880 | 1753 | struct ofconn *ofconn; |
19a87e36 | 1754 | |
19a87e36 | 1755 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
cfa955b0 YT |
1756 | enum ofp_packet_in_reason reason = wire_reason(ofconn, pin); |
1757 | ||
6b83a3c5 | 1758 | if (ofconn_wants_packet_in_on_miss(ofconn, pin) |
ba96552a | 1759 | && ofconn_receives_async_msg(ofconn, OAM_PACKET_IN, reason) |
f11c7538 | 1760 | && ofconn->controller_id == pin->controller_id) { |
cfa955b0 | 1761 | schedule_packet_in(ofconn, *pin, reason); |
19a87e36 BP |
1762 | } |
1763 | } | |
19a87e36 BP |
1764 | } |
1765 | ||
19a87e36 | 1766 | static void |
ca6ba700 | 1767 | do_send_packet_ins(struct ofconn *ofconn, struct ovs_list *txq) |
19a87e36 | 1768 | { |
5f03c983 | 1769 | struct ofpbuf *pin; |
19a87e36 | 1770 | |
5f03c983 | 1771 | LIST_FOR_EACH_POP (pin, list_node, txq) { |
e95f1d01 BP |
1772 | if (rconn_send_with_limit(ofconn->rconn, pin, |
1773 | ofconn->packet_in_counter, 100) == EAGAIN) { | |
1774 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 5); | |
1775 | ||
1776 | VLOG_INFO_RL(&rl, "%s: dropping packet-in due to queue overflow", | |
1777 | rconn_get_name(ofconn->rconn)); | |
1778 | } | |
a6f75961 | 1779 | } |
19a87e36 BP |
1780 | } |
1781 | ||
d8653c38 BP |
1782 | /* Takes 'pin', composes an OpenFlow packet-in message from it, and passes it |
1783 | * to 'ofconn''s packet scheduler for sending. */ | |
19a87e36 | 1784 | static void |
cfa955b0 YT |
1785 | schedule_packet_in(struct ofconn *ofconn, struct ofproto_packet_in pin, |
1786 | enum ofp_packet_in_reason wire_reason) | |
19a87e36 BP |
1787 | { |
1788 | struct connmgr *mgr = ofconn->connmgr; | |
a1192496 | 1789 | uint16_t controller_max_len; |
ca6ba700 | 1790 | struct ovs_list txq; |
19a87e36 | 1791 | |
0fb7792a | 1792 | pin.up.total_len = pin.up.packet_len; |
2ed1202f | 1793 | |
cfa955b0 | 1794 | pin.up.reason = wire_reason; |
0fb7792a | 1795 | if (pin.up.reason == OFPR_ACTION) { |
d38a3c7b | 1796 | controller_max_len = pin.send_len; /* max_len */ |
a1192496 YT |
1797 | } else { |
1798 | controller_max_len = ofconn->miss_send_len; | |
1799 | } | |
1800 | ||
1801 | /* Get OpenFlow buffer_id. | |
1802 | * For OpenFlow 1.2+, OFPCML_NO_BUFFER (== UINT16_MAX) specifies | |
1803 | * unbuffered. This behaviour doesn't violate prior versions, too. */ | |
1804 | if (controller_max_len == UINT16_MAX) { | |
0fb7792a | 1805 | pin.up.buffer_id = UINT32_MAX; |
19a87e36 | 1806 | } else if (mgr->fail_open && fail_open_is_active(mgr->fail_open)) { |
0fb7792a | 1807 | pin.up.buffer_id = pktbuf_get_null(); |
19a87e36 | 1808 | } else if (!ofconn->pktbuf) { |
0fb7792a | 1809 | pin.up.buffer_id = UINT32_MAX; |
19a87e36 | 1810 | } else { |
0fb7792a BP |
1811 | pin.up.buffer_id = pktbuf_save(ofconn->pktbuf, |
1812 | pin.up.packet, pin.up.packet_len, | |
50dcbd8e | 1813 | pin.up.flow_metadata.flow.in_port.ofp_port); |
19a87e36 BP |
1814 | } |
1815 | ||
a1192496 YT |
1816 | /* Figure out how much of the packet to send. |
1817 | * If not buffered, send the entire packet. Otherwise, depending on | |
1818 | * the reason of packet-in, send what requested by the controller. */ | |
d38a3c7b BP |
1819 | if (pin.up.buffer_id != UINT32_MAX |
1820 | && controller_max_len < pin.up.packet_len) { | |
1821 | pin.up.packet_len = controller_max_len; | |
19a87e36 | 1822 | } |
19a87e36 | 1823 | |
a6f75961 | 1824 | /* Make OFPT_PACKET_IN and hand over to packet scheduler. */ |
0fb7792a | 1825 | pinsched_send(ofconn->schedulers[pin.up.reason == OFPR_NO_MATCH ? 0 : 1], |
50dcbd8e | 1826 | pin.up.flow_metadata.flow.in_port.ofp_port, |
0fb7792a BP |
1827 | ofputil_encode_packet_in(&pin.up, |
1828 | ofconn_get_protocol(ofconn), | |
d94240ec | 1829 | ofconn->packet_in_format), |
a6f75961 BP |
1830 | &txq); |
1831 | do_send_packet_ins(ofconn, &txq); | |
19a87e36 BP |
1832 | } |
1833 | \f | |
1834 | /* Fail-open settings. */ | |
1835 | ||
1836 | /* Returns the failure handling mode (OFPROTO_FAIL_SECURE or | |
1837 | * OFPROTO_FAIL_STANDALONE) for 'mgr'. */ | |
1838 | enum ofproto_fail_mode | |
1839 | connmgr_get_fail_mode(const struct connmgr *mgr) | |
1840 | { | |
1841 | return mgr->fail_mode; | |
1842 | } | |
1843 | ||
1844 | /* Sets the failure handling mode for 'mgr' to 'fail_mode' (either | |
1845 | * OFPROTO_FAIL_SECURE or OFPROTO_FAIL_STANDALONE). */ | |
1846 | void | |
1847 | connmgr_set_fail_mode(struct connmgr *mgr, enum ofproto_fail_mode fail_mode) | |
1848 | { | |
08fd19f0 BP |
1849 | if (mgr->fail_mode != fail_mode) { |
1850 | mgr->fail_mode = fail_mode; | |
1851 | update_fail_open(mgr); | |
1852 | if (!connmgr_has_controllers(mgr)) { | |
1853 | ofproto_flush_flows(mgr->ofproto); | |
1854 | } | |
1855 | } | |
19a87e36 BP |
1856 | } |
1857 | \f | |
1858 | /* Fail-open implementation. */ | |
1859 | ||
1860 | /* Returns the longest probe interval among the primary controllers configured | |
1861 | * on 'mgr'. Returns 0 if there are no primary controllers. */ | |
1862 | int | |
1863 | connmgr_get_max_probe_interval(const struct connmgr *mgr) | |
1864 | { | |
1865 | const struct ofconn *ofconn; | |
1866 | int max_probe_interval; | |
1867 | ||
1868 | max_probe_interval = 0; | |
1869 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1870 | int probe_interval = rconn_get_probe_interval(ofconn->rconn); | |
1871 | max_probe_interval = MAX(max_probe_interval, probe_interval); | |
1872 | } | |
1873 | return max_probe_interval; | |
1874 | } | |
1875 | ||
1876 | /* Returns the number of seconds for which all of 'mgr's primary controllers | |
1877 | * have been disconnected. Returns 0 if 'mgr' has no primary controllers. */ | |
1878 | int | |
1879 | connmgr_failure_duration(const struct connmgr *mgr) | |
1880 | { | |
1881 | const struct ofconn *ofconn; | |
1882 | int min_failure_duration; | |
1883 | ||
1884 | if (!connmgr_has_controllers(mgr)) { | |
1885 | return 0; | |
1886 | } | |
1887 | ||
1888 | min_failure_duration = INT_MAX; | |
1889 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1890 | int failure_duration = rconn_failure_duration(ofconn->rconn); | |
1891 | min_failure_duration = MIN(min_failure_duration, failure_duration); | |
1892 | } | |
1893 | return min_failure_duration; | |
1894 | } | |
1895 | ||
1896 | /* Returns true if at least one primary controller is connected (regardless of | |
1897 | * whether those controllers are believed to have authenticated and accepted | |
1898 | * this switch), false if none of them are connected. */ | |
1899 | bool | |
1900 | connmgr_is_any_controller_connected(const struct connmgr *mgr) | |
1901 | { | |
1902 | const struct ofconn *ofconn; | |
1903 | ||
1904 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1905 | if (rconn_is_connected(ofconn->rconn)) { | |
1906 | return true; | |
1907 | } | |
1908 | } | |
1909 | return false; | |
1910 | } | |
1911 | ||
1912 | /* Returns true if at least one primary controller is believed to have | |
1913 | * authenticated and accepted this switch, false otherwise. */ | |
1914 | bool | |
1915 | connmgr_is_any_controller_admitted(const struct connmgr *mgr) | |
1916 | { | |
1917 | const struct ofconn *ofconn; | |
1918 | ||
1919 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1920 | if (rconn_is_admitted(ofconn->rconn)) { | |
1921 | return true; | |
1922 | } | |
1923 | } | |
1924 | return false; | |
1925 | } | |
19a87e36 BP |
1926 | \f |
1927 | /* In-band configuration. */ | |
1928 | ||
1929 | static bool any_extras_changed(const struct connmgr *, | |
1930 | const struct sockaddr_in *extras, size_t n); | |
1931 | ||
1932 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'mgr''s | |
1933 | * in-band control should guarantee access, in the same way that in-band | |
1934 | * control guarantees access to OpenFlow controllers. */ | |
1935 | void | |
1936 | connmgr_set_extra_in_band_remotes(struct connmgr *mgr, | |
1937 | const struct sockaddr_in *extras, size_t n) | |
1938 | { | |
1939 | if (!any_extras_changed(mgr, extras, n)) { | |
1940 | return; | |
1941 | } | |
1942 | ||
1943 | free(mgr->extra_in_band_remotes); | |
1944 | mgr->n_extra_remotes = n; | |
1945 | mgr->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras); | |
1946 | ||
1947 | update_in_band_remotes(mgr); | |
1948 | } | |
1949 | ||
1950 | /* Sets the OpenFlow queue used by flows set up by in-band control on | |
1951 | * 'mgr' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
1952 | * flows will use the default queue. */ | |
1953 | void | |
1954 | connmgr_set_in_band_queue(struct connmgr *mgr, int queue_id) | |
1955 | { | |
1956 | if (queue_id != mgr->in_band_queue) { | |
1957 | mgr->in_band_queue = queue_id; | |
1958 | update_in_band_remotes(mgr); | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | static bool | |
1963 | any_extras_changed(const struct connmgr *mgr, | |
1964 | const struct sockaddr_in *extras, size_t n) | |
1965 | { | |
1966 | size_t i; | |
1967 | ||
1968 | if (n != mgr->n_extra_remotes) { | |
1969 | return true; | |
1970 | } | |
1971 | ||
1972 | for (i = 0; i < n; i++) { | |
1973 | const struct sockaddr_in *old = &mgr->extra_in_band_remotes[i]; | |
1974 | const struct sockaddr_in *new = &extras[i]; | |
1975 | ||
1976 | if (old->sin_addr.s_addr != new->sin_addr.s_addr || | |
1977 | old->sin_port != new->sin_port) { | |
1978 | return true; | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | return false; | |
1983 | } | |
1984 | \f | |
1985 | /* In-band implementation. */ | |
1986 | ||
1987 | bool | |
f7f1ea29 | 1988 | connmgr_has_in_band(struct connmgr *mgr) |
19a87e36 | 1989 | { |
f7f1ea29 | 1990 | return mgr->in_band != NULL; |
19a87e36 BP |
1991 | } |
1992 | \f | |
1993 | /* Fail-open and in-band implementation. */ | |
1994 | ||
1995 | /* Called by 'ofproto' after all flows have been flushed, to allow fail-open | |
7ee20df1 BP |
1996 | * and standalone mode to re-create their flows. |
1997 | * | |
1998 | * In-band control has more sophisticated code that manages flows itself. */ | |
19a87e36 BP |
1999 | void |
2000 | connmgr_flushed(struct connmgr *mgr) | |
15aaf599 | 2001 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 2002 | { |
19a87e36 BP |
2003 | if (mgr->fail_open) { |
2004 | fail_open_flushed(mgr->fail_open); | |
2005 | } | |
08fd19f0 BP |
2006 | |
2007 | /* If there are no controllers and we're in standalone mode, set up a flow | |
2008 | * that matches every packet and directs them to OFPP_NORMAL (which goes to | |
2009 | * us). Otherwise, the switch is in secure mode and we won't pass any | |
2010 | * traffic until a controller has been defined and it tells us to do so. */ | |
2011 | if (!connmgr_has_controllers(mgr) | |
2012 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
f25d0cf3 | 2013 | struct ofpbuf ofpacts; |
81a76618 | 2014 | struct match match; |
08fd19f0 | 2015 | |
f25d0cf3 BP |
2016 | ofpbuf_init(&ofpacts, OFPACT_OUTPUT_SIZE); |
2017 | ofpact_put_OUTPUT(&ofpacts)->port = OFPP_NORMAL; | |
2018 | ofpact_pad(&ofpacts); | |
2019 | ||
81a76618 | 2020 | match_init_catchall(&match); |
6fd6ed71 PS |
2021 | ofproto_add_flow(mgr->ofproto, &match, 0, ofpacts.data, |
2022 | ofpacts.size); | |
f25d0cf3 BP |
2023 | |
2024 | ofpbuf_uninit(&ofpacts); | |
08fd19f0 | 2025 | } |
19a87e36 | 2026 | } |
3fbbcba7 BP |
2027 | |
2028 | /* Returns the number of hidden rules created by the in-band and fail-open | |
2029 | * implementations in table 0. (Subtracting this count from the number of | |
d79e3d70 | 2030 | * rules in the table 0 classifier, as maintained in struct oftable, yields |
3fbbcba7 BP |
2031 | * the number of flows that OVS should report via OpenFlow for table 0.) */ |
2032 | int | |
2033 | connmgr_count_hidden_rules(const struct connmgr *mgr) | |
2034 | { | |
2035 | int n_hidden = 0; | |
2036 | if (mgr->in_band) { | |
2037 | n_hidden += in_band_count_rules(mgr->in_band); | |
2038 | } | |
2039 | if (mgr->fail_open) { | |
2040 | n_hidden += fail_open_count_rules(mgr->fail_open); | |
2041 | } | |
2042 | return n_hidden; | |
2043 | } | |
19a87e36 BP |
2044 | \f |
2045 | /* Creates a new ofservice for 'target' in 'mgr'. Returns 0 if successful, | |
2046 | * otherwise a positive errno value. | |
2047 | * | |
2048 | * ofservice_reconfigure() must be called to fully configure the new | |
2049 | * ofservice. */ | |
2050 | static int | |
00401ef0 SH |
2051 | ofservice_create(struct connmgr *mgr, const char *target, |
2052 | uint32_t allowed_versions, uint8_t dscp) | |
19a87e36 BP |
2053 | { |
2054 | struct ofservice *ofservice; | |
2055 | struct pvconn *pvconn; | |
2056 | int error; | |
2057 | ||
82c8c53c | 2058 | error = pvconn_open(target, allowed_versions, dscp, &pvconn); |
19a87e36 BP |
2059 | if (error) { |
2060 | return error; | |
2061 | } | |
2062 | ||
2063 | ofservice = xzalloc(sizeof *ofservice); | |
2064 | hmap_insert(&mgr->services, &ofservice->node, hash_string(target, 0)); | |
2065 | ofservice->pvconn = pvconn; | |
90ef0206 | 2066 | ofservice->allowed_versions = allowed_versions; |
19a87e36 BP |
2067 | |
2068 | return 0; | |
2069 | } | |
2070 | ||
2071 | static void | |
2072 | ofservice_destroy(struct connmgr *mgr, struct ofservice *ofservice) | |
2073 | { | |
2074 | hmap_remove(&mgr->services, &ofservice->node); | |
2075 | pvconn_close(ofservice->pvconn); | |
2076 | free(ofservice); | |
2077 | } | |
2078 | ||
2079 | static void | |
2080 | ofservice_reconfigure(struct ofservice *ofservice, | |
2081 | const struct ofproto_controller *c) | |
2082 | { | |
2083 | ofservice->probe_interval = c->probe_interval; | |
2084 | ofservice->rate_limit = c->rate_limit; | |
2085 | ofservice->burst_limit = c->burst_limit; | |
9886b662 | 2086 | ofservice->enable_async_msgs = c->enable_async_msgs; |
f125905c | 2087 | ofservice->dscp = c->dscp; |
19a87e36 BP |
2088 | } |
2089 | ||
2090 | /* Finds and returns the ofservice within 'mgr' that has the given | |
2091 | * 'target', or a null pointer if none exists. */ | |
2092 | static struct ofservice * | |
2093 | ofservice_lookup(struct connmgr *mgr, const char *target) | |
2094 | { | |
2095 | struct ofservice *ofservice; | |
2096 | ||
2097 | HMAP_FOR_EACH_WITH_HASH (ofservice, node, hash_string(target, 0), | |
2098 | &mgr->services) { | |
2099 | if (!strcmp(pvconn_get_name(ofservice->pvconn), target)) { | |
2100 | return ofservice; | |
2101 | } | |
2102 | } | |
2103 | return NULL; | |
2104 | } | |
2b07c8b1 BP |
2105 | \f |
2106 | /* Flow monitors (NXST_FLOW_MONITOR). */ | |
2107 | ||
2108 | /* A counter incremented when something significant happens to an OpenFlow | |
2109 | * rule. | |
2110 | * | |
2111 | * - When a rule is added, its 'add_seqno' and 'modify_seqno' are set to | |
2112 | * the current value (which is then incremented). | |
2113 | * | |
2114 | * - When a rule is modified, its 'modify_seqno' is set to the current | |
2115 | * value (which is then incremented). | |
2116 | * | |
2117 | * Thus, by comparing an old value of monitor_seqno against a rule's | |
2118 | * 'add_seqno', one can tell whether the rule was added before or after the old | |
2119 | * value was read, and similarly for 'modify_seqno'. | |
2120 | * | |
2121 | * 32 bits should normally be sufficient (and would be nice, to save space in | |
2122 | * each rule) but then we'd have to have some special cases for wraparound. | |
2123 | * | |
2124 | * We initialize monitor_seqno to 1 to allow 0 to be used as an invalid | |
2125 | * value. */ | |
2126 | static uint64_t monitor_seqno = 1; | |
2127 | ||
2128 | COVERAGE_DEFINE(ofmonitor_pause); | |
2129 | COVERAGE_DEFINE(ofmonitor_resume); | |
2130 | ||
2131 | enum ofperr | |
2132 | ofmonitor_create(const struct ofputil_flow_monitor_request *request, | |
2133 | struct ofconn *ofconn, struct ofmonitor **monitorp) | |
4cd1bc9d | 2134 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2135 | { |
2136 | struct ofmonitor *m; | |
2137 | ||
2138 | *monitorp = NULL; | |
2139 | ||
2140 | m = ofmonitor_lookup(ofconn, request->id); | |
2141 | if (m) { | |
04f9f286 | 2142 | return OFPERR_OFPMOFC_MONITOR_EXISTS; |
2b07c8b1 BP |
2143 | } |
2144 | ||
2145 | m = xmalloc(sizeof *m); | |
2146 | m->ofconn = ofconn; | |
2147 | hmap_insert(&ofconn->monitors, &m->ofconn_node, hash_int(request->id, 0)); | |
2148 | m->id = request->id; | |
2149 | m->flags = request->flags; | |
2150 | m->out_port = request->out_port; | |
2151 | m->table_id = request->table_id; | |
5cb7a798 | 2152 | minimatch_init(&m->match, &request->match); |
2b07c8b1 BP |
2153 | |
2154 | *monitorp = m; | |
2155 | return 0; | |
2156 | } | |
2157 | ||
2158 | struct ofmonitor * | |
2159 | ofmonitor_lookup(struct ofconn *ofconn, uint32_t id) | |
4cd1bc9d | 2160 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2161 | { |
2162 | struct ofmonitor *m; | |
2163 | ||
2164 | HMAP_FOR_EACH_IN_BUCKET (m, ofconn_node, hash_int(id, 0), | |
2165 | &ofconn->monitors) { | |
2166 | if (m->id == id) { | |
2167 | return m; | |
2168 | } | |
2169 | } | |
2170 | return NULL; | |
2171 | } | |
2172 | ||
2173 | void | |
2174 | ofmonitor_destroy(struct ofmonitor *m) | |
4cd1bc9d | 2175 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2176 | { |
2177 | if (m) { | |
5684eb74 | 2178 | minimatch_destroy(&m->match); |
2b07c8b1 BP |
2179 | hmap_remove(&m->ofconn->monitors, &m->ofconn_node); |
2180 | free(m); | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | void | |
2185 | ofmonitor_report(struct connmgr *mgr, struct rule *rule, | |
2186 | enum nx_flow_update_event event, | |
2187 | enum ofp_flow_removed_reason reason, | |
cdbdeeda SH |
2188 | const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid, |
2189 | const struct rule_actions *old_actions) | |
15aaf599 | 2190 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2191 | { |
2192 | enum nx_flow_monitor_flags update; | |
2193 | struct ofconn *ofconn; | |
2194 | ||
834fe5cb BP |
2195 | if (rule_is_hidden(rule)) { |
2196 | return; | |
2197 | } | |
2198 | ||
2b07c8b1 BP |
2199 | switch (event) { |
2200 | case NXFME_ADDED: | |
2201 | update = NXFMF_ADD; | |
2202 | rule->add_seqno = rule->modify_seqno = monitor_seqno++; | |
2203 | break; | |
2204 | ||
2205 | case NXFME_DELETED: | |
2206 | update = NXFMF_DELETE; | |
2207 | break; | |
2208 | ||
2209 | case NXFME_MODIFIED: | |
2210 | update = NXFMF_MODIFY; | |
2211 | rule->modify_seqno = monitor_seqno++; | |
2212 | break; | |
2213 | ||
2214 | default: | |
2215 | case NXFME_ABBREV: | |
428b2edd | 2216 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2217 | } |
2218 | ||
2219 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
2220 | enum nx_flow_monitor_flags flags = 0; | |
2221 | struct ofmonitor *m; | |
2222 | ||
2223 | if (ofconn->monitor_paused) { | |
2224 | /* Only send NXFME_DELETED notifications for flows that were added | |
2225 | * before we paused. */ | |
2226 | if (event != NXFME_DELETED | |
2227 | || rule->add_seqno > ofconn->monitor_paused) { | |
2228 | continue; | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { | |
2233 | if (m->flags & update | |
2234 | && (m->table_id == 0xff || m->table_id == rule->table_id) | |
cdbdeeda SH |
2235 | && (ofproto_rule_has_out_port(rule, m->out_port) |
2236 | || (old_actions | |
2237 | && ofpacts_output_to_port(old_actions->ofpacts, | |
2238 | old_actions->ofpacts_len, | |
2239 | m->out_port))) | |
2b07c8b1 BP |
2240 | && cls_rule_is_loose_match(&rule->cr, &m->match)) { |
2241 | flags |= m->flags; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | if (flags) { | |
2246 | if (list_is_empty(&ofconn->updates)) { | |
2247 | ofputil_start_flow_update(&ofconn->updates); | |
2248 | ofconn->sent_abbrev_update = false; | |
2249 | } | |
2250 | ||
200d6ac4 SH |
2251 | if (flags & NXFMF_OWN || ofconn != abbrev_ofconn |
2252 | || ofconn->monitor_paused) { | |
2b07c8b1 | 2253 | struct ofputil_flow_update fu; |
5cb7a798 | 2254 | struct match match; |
2b07c8b1 BP |
2255 | |
2256 | fu.event = event; | |
2257 | fu.reason = event == NXFME_DELETED ? reason : 0; | |
2b07c8b1 BP |
2258 | fu.table_id = rule->table_id; |
2259 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
2260 | minimatch_expand(&rule->cr.match, &match); |
2261 | fu.match = &match; | |
6b140a4e | 2262 | fu.priority = rule->cr.priority; |
a3779dbc | 2263 | |
d10976b7 | 2264 | ovs_mutex_lock(&rule->mutex); |
a3779dbc EJ |
2265 | fu.idle_timeout = rule->idle_timeout; |
2266 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 2267 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 2268 | |
2b07c8b1 | 2269 | if (flags & NXFMF_ACTIONS) { |
dc723c44 | 2270 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 BP |
2271 | fu.ofpacts = actions->ofpacts; |
2272 | fu.ofpacts_len = actions->ofpacts_len; | |
2b07c8b1 BP |
2273 | } else { |
2274 | fu.ofpacts = NULL; | |
2275 | fu.ofpacts_len = 0; | |
2276 | } | |
2277 | ofputil_append_flow_update(&fu, &ofconn->updates); | |
2278 | } else if (!ofconn->sent_abbrev_update) { | |
2279 | struct ofputil_flow_update fu; | |
2280 | ||
2281 | fu.event = NXFME_ABBREV; | |
2282 | fu.xid = abbrev_xid; | |
2283 | ofputil_append_flow_update(&fu, &ofconn->updates); | |
2284 | ||
2285 | ofconn->sent_abbrev_update = true; | |
2286 | } | |
2287 | } | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | void | |
2292 | ofmonitor_flush(struct connmgr *mgr) | |
4cd1bc9d | 2293 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2294 | { |
2295 | struct ofconn *ofconn; | |
2296 | ||
2297 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
5f03c983 | 2298 | struct ofpbuf *msg; |
2b07c8b1 | 2299 | |
5f03c983 | 2300 | LIST_FOR_EACH_POP (msg, list_node, &ofconn->updates) { |
a3d1ff00 BP |
2301 | unsigned int n_bytes; |
2302 | ||
2b07c8b1 | 2303 | ofconn_send(ofconn, msg, ofconn->monitor_counter); |
a3d1ff00 BP |
2304 | n_bytes = rconn_packet_counter_n_bytes(ofconn->monitor_counter); |
2305 | if (!ofconn->monitor_paused && n_bytes > 128 * 1024) { | |
2b07c8b1 BP |
2306 | struct ofpbuf *pause; |
2307 | ||
2308 | COVERAGE_INC(ofmonitor_pause); | |
2309 | ofconn->monitor_paused = monitor_seqno++; | |
982697a4 BP |
2310 | pause = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_PAUSED, |
2311 | OFP10_VERSION, htonl(0), 0); | |
2b07c8b1 BP |
2312 | ofconn_send(ofconn, pause, ofconn->monitor_counter); |
2313 | } | |
2314 | } | |
2315 | } | |
2316 | } | |
2317 | ||
2318 | static void | |
2319 | ofmonitor_resume(struct ofconn *ofconn) | |
4cd1bc9d | 2320 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2321 | { |
a8e547c1 | 2322 | struct rule_collection rules; |
982697a4 | 2323 | struct ofpbuf *resumed; |
2b07c8b1 | 2324 | struct ofmonitor *m; |
ca6ba700 | 2325 | struct ovs_list msgs; |
2b07c8b1 | 2326 | |
a8e547c1 | 2327 | rule_collection_init(&rules); |
2b07c8b1 BP |
2328 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2329 | ofmonitor_collect_resume_rules(m, ofconn->monitor_paused, &rules); | |
2330 | } | |
2331 | ||
2332 | list_init(&msgs); | |
2333 | ofmonitor_compose_refresh_updates(&rules, &msgs); | |
2334 | ||
982697a4 BP |
2335 | resumed = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_RESUMED, OFP10_VERSION, |
2336 | htonl(0), 0); | |
2337 | list_push_back(&msgs, &resumed->list_node); | |
2b07c8b1 BP |
2338 | ofconn_send_replies(ofconn, &msgs); |
2339 | ||
2340 | ofconn->monitor_paused = 0; | |
2341 | } | |
2342 | ||
4cd1bc9d BP |
2343 | static bool |
2344 | ofmonitor_may_resume(const struct ofconn *ofconn) | |
2345 | OVS_REQUIRES(ofproto_mutex) | |
2346 | { | |
2347 | return (ofconn->monitor_paused != 0 | |
2348 | && !rconn_packet_counter_n_packets(ofconn->monitor_counter)); | |
2349 | } | |
2350 | ||
2b07c8b1 BP |
2351 | static void |
2352 | ofmonitor_run(struct connmgr *mgr) | |
2353 | { | |
2354 | struct ofconn *ofconn; | |
2355 | ||
4cd1bc9d | 2356 | ovs_mutex_lock(&ofproto_mutex); |
2b07c8b1 | 2357 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
4cd1bc9d | 2358 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2359 | COVERAGE_INC(ofmonitor_resume); |
2360 | ofmonitor_resume(ofconn); | |
2361 | } | |
2362 | } | |
4cd1bc9d | 2363 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 BP |
2364 | } |
2365 | ||
2366 | static void | |
2367 | ofmonitor_wait(struct connmgr *mgr) | |
2368 | { | |
2369 | struct ofconn *ofconn; | |
2370 | ||
4cd1bc9d | 2371 | ovs_mutex_lock(&ofproto_mutex); |
2b07c8b1 | 2372 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
4cd1bc9d | 2373 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2374 | poll_immediate_wake(); |
2375 | } | |
2376 | } | |
4cd1bc9d | 2377 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 2378 | } |