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19a87e36 | 1 | /* |
393f479c | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2019 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> | |
19a87e36 BP |
18 | #include <errno.h> |
19 | #include <stdlib.h> | |
20 | ||
b598f214 BW |
21 | #include "bundles.h" |
22 | #include "connmgr.h" | |
19a87e36 | 23 | #include "coverage.h" |
19a87e36 BP |
24 | #include "fail-open.h" |
25 | #include "in-band.h" | |
26 | #include "odp-util.h" | |
d271907f BW |
27 | #include "ofproto-provider.h" |
28 | #include "openvswitch/dynamic-string.h" | |
b598f214 | 29 | #include "openvswitch/ofp-actions.h" |
d271907f | 30 | #include "openvswitch/ofp-msgs.h" |
0d71302e | 31 | #include "openvswitch/ofp-monitor.h" |
64c96779 | 32 | #include "openvswitch/ofpbuf.h" |
d271907f BW |
33 | #include "openvswitch/vconn.h" |
34 | #include "openvswitch/vlog.h" | |
b9320e51 | 35 | #include "ovs-atomic.h" |
19a87e36 | 36 | #include "pinsched.h" |
fd016ae3 | 37 | #include "openvswitch/poll-loop.h" |
dc02e1eb | 38 | #include "openvswitch/rconn.h" |
ee89ea7b | 39 | #include "openvswitch/shash.h" |
7fdd2082 | 40 | #include "sat-math.h" |
0d085684 | 41 | #include "simap.h" |
5bd31620 | 42 | #include "stream.h" |
19a87e36 | 43 | #include "timeval.h" |
ee89ea7b | 44 | #include "util.h" |
19a87e36 BP |
45 | |
46 | VLOG_DEFINE_THIS_MODULE(connmgr); | |
47 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
48 | ||
3b0c6b56 BP |
49 | /* An OpenFlow connection. |
50 | * | |
51 | * | |
52 | * Thread-safety | |
53 | * ============= | |
54 | * | |
55 | * 'ofproto_mutex' must be held whenever an ofconn is created or destroyed or, | |
56 | * more or less equivalently, whenever an ofconn is added to or removed from a | |
4cd1bc9d BP |
57 | * connmgr. 'ofproto_mutex' doesn't protect the data inside the ofconn, except |
58 | * as specifically noted below. */ | |
19a87e36 | 59 | struct ofconn { |
a0baa7df BP |
60 | struct connmgr *connmgr; /* Connection's manager. */ |
61 | struct ovs_list connmgr_node; /* In connmgr->conns. */ | |
c4b31872 | 62 | |
a0baa7df BP |
63 | struct ofservice *ofservice; /* Connection's service. */ |
64 | struct ovs_list ofservice_node; /* In service->conns. */ | |
c4b31872 | 65 | |
19a87e36 BP |
66 | struct rconn *rconn; /* OpenFlow connection. */ |
67 | enum ofconn_type type; /* Type. */ | |
c4b31872 | 68 | enum ofproto_band band; /* In-band or out-of-band? */ |
b9320e51 | 69 | bool want_packet_in_on_miss; |
c4b31872 | 70 | |
c4b31872 | 71 | /* OpenFlow state. */ |
f4f1ea7e | 72 | enum ofp12_controller_role role; /* Role. */ |
27527aa0 | 73 | enum ofputil_protocol protocol; /* Current protocol variant. */ |
d8790c08 | 74 | enum ofputil_packet_in_format packet_in_format; |
19a87e36 BP |
75 | |
76 | /* OFPT_PACKET_IN related data. */ | |
3dabc687 | 77 | int packet_in_queue_size; |
19a87e36 BP |
78 | struct rconn_packet_counter *packet_in_counter; /* # queued on 'rconn'. */ |
79 | #define N_SCHEDULERS 2 | |
80 | struct pinsched *schedulers[N_SCHEDULERS]; | |
19a87e36 | 81 | int miss_send_len; /* Bytes to send of buffered packets. */ |
a7349929 | 82 | uint16_t controller_id; /* Connection controller ID. */ |
19a87e36 BP |
83 | |
84 | /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow | |
85 | * requests, and the maximum number before we stop reading OpenFlow | |
86 | * requests. */ | |
87 | #define OFCONN_REPLY_MAX 100 | |
88 | struct rconn_packet_counter *reply_counter; | |
80d5aefd | 89 | |
a930d4c5 | 90 | /* Asynchronous message configuration in each possible role. |
80d5aefd BP |
91 | * |
92 | * A 1-bit enables sending an asynchronous message for one possible reason | |
93 | * that the message might be generated, a 0-bit disables it. */ | |
a930d4c5 | 94 | struct ofputil_async_cfg *async_cfg; |
2b07c8b1 | 95 | |
696d1bcf BP |
96 | /* Flow table operation logging. */ |
97 | int n_add, n_delete, n_modify; /* Number of unreported ops of each kind. */ | |
98 | long long int first_op, last_op; /* Range of times for unreported ops. */ | |
99 | long long int next_op_report; /* Time to report ops, or LLONG_MAX. */ | |
100 | long long int op_backoff; /* Earliest time to report ops again. */ | |
101 | ||
fd4b7a0e BP |
102 | /* Reassembly of multipart requests. */ |
103 | struct hmap assembler; | |
104 | ||
4cd1bc9d BP |
105 | /* Flow monitors (e.g. NXST_FLOW_MONITOR). */ |
106 | ||
107 | /* Configuration. Contains "struct ofmonitor"s. */ | |
108 | struct hmap monitors OVS_GUARDED_BY(ofproto_mutex); | |
109 | ||
110 | /* Flow control. | |
111 | * | |
112 | * When too many flow monitor notifications back up in the transmit buffer, | |
113 | * we pause the transmission of further notifications. These members track | |
114 | * the flow control state. | |
115 | * | |
116 | * When notifications are flowing, 'monitor_paused' is 0. When | |
117 | * notifications are paused, 'monitor_paused' is the value of | |
118 | * 'monitor_seqno' at the point we paused. | |
119 | * | |
120 | * 'monitor_counter' counts the OpenFlow messages and bytes currently in | |
121 | * flight. This value growing too large triggers pausing. */ | |
122 | uint64_t monitor_paused OVS_GUARDED_BY(ofproto_mutex); | |
123 | struct rconn_packet_counter *monitor_counter OVS_GUARDED_BY(ofproto_mutex); | |
124 | ||
125 | /* State of monitors for a single ongoing flow_mod. | |
126 | * | |
127 | * 'updates' is a list of "struct ofpbuf"s that contain | |
128 | * NXST_FLOW_MONITOR_REPLY messages representing the changes made by the | |
129 | * current flow_mod. | |
130 | * | |
131 | * When 'updates' is nonempty, 'sent_abbrev_update' is true if 'updates' | |
132 | * contains an update event of type NXFME_ABBREV and false otherwise.. */ | |
ca6ba700 | 133 | struct ovs_list updates OVS_GUARDED_BY(ofproto_mutex); |
4cd1bc9d | 134 | bool sent_abbrev_update OVS_GUARDED_BY(ofproto_mutex); |
777af88d AC |
135 | |
136 | /* Active bundles. Contains "struct ofp_bundle"s. */ | |
137 | struct hmap bundles; | |
51bb26fa JR |
138 | long long int next_bundle_expiry_check; |
139 | }; | |
140 | ||
141 | /* vswitchd/ovs-vswitchd.8.in documents the value of BUNDLE_IDLE_LIFETIME in | |
142 | * seconds. That documentation must be kept in sync with the value below. */ | |
7fdd2082 FL |
143 | #define BUNDLE_EXPIRY_INTERVAL 1000 /* Check bundle expiry every 1 sec. */ |
144 | #define BUNDLE_IDLE_TIMEOUT_DEFAULT 10000 /* Expire idle bundles after | |
145 | * 10 seconds. */ | |
146 | ||
147 | static unsigned int bundle_idle_timeout = BUNDLE_IDLE_TIMEOUT_DEFAULT; | |
19a87e36 | 148 | |
c66be90b | 149 | static void ofconn_create(struct ofservice *, struct rconn *, |
a0baa7df BP |
150 | const struct ofproto_controller *settings) |
151 | OVS_EXCLUDED(ofproto_mutex); | |
3b0c6b56 | 152 | static void ofconn_destroy(struct ofconn *) OVS_REQUIRES(ofproto_mutex); |
19a87e36 BP |
153 | |
154 | static void ofconn_reconfigure(struct ofconn *, | |
155 | const struct ofproto_controller *); | |
156 | ||
157 | static void ofconn_run(struct ofconn *, | |
b20f4073 | 158 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 159 | const struct ovs_list *msgs)); |
b20f4073 | 160 | static void ofconn_wait(struct ofconn *); |
19a87e36 | 161 | |
696d1bcf BP |
162 | static void ofconn_log_flow_mods(struct ofconn *); |
163 | ||
19a87e36 BP |
164 | static char *ofconn_make_name(const struct connmgr *, const char *target); |
165 | ||
166 | static void ofconn_set_rate_limit(struct ofconn *, int rate, int burst); | |
167 | ||
19a87e36 BP |
168 | static void ofconn_send(const struct ofconn *, struct ofpbuf *, |
169 | struct rconn_packet_counter *); | |
170 | ||
ca6ba700 | 171 | static void do_send_packet_ins(struct ofconn *, struct ovs_list *txq); |
19a87e36 | 172 | |
a0baa7df BP |
173 | /* A listener for incoming OpenFlow connections or for establishing an |
174 | * outgoing connection. */ | |
19a87e36 | 175 | struct ofservice { |
a0baa7df BP |
176 | struct hmap_node hmap_node; /* In connmgr->services, by target. */ |
177 | struct connmgr *connmgr; | |
178 | ||
179 | char *target; /* e.g. "tcp:..." or "pssl:...". */ | |
180 | struct ovs_list conns; /* "ofconn"s generated by this service. */ | |
181 | enum ofconn_type type; /* OFCONN_PRIMARY or OFCONN_SERVICE. */ | |
182 | ||
183 | /* Source of connections. */ | |
184 | struct rconn *rconn; /* Active connection only. */ | |
185 | struct pvconn *pvconn; /* Passive listener only. */ | |
186 | ||
187 | /* Settings for "struct ofconn"s established by this service. */ | |
188 | struct ofproto_controller s; | |
19a87e36 BP |
189 | }; |
190 | ||
a0baa7df BP |
191 | static void ofservice_run(struct ofservice *); |
192 | static void ofservice_wait(struct ofservice *); | |
19a87e36 | 193 | static void ofservice_reconfigure(struct ofservice *, |
a0baa7df BP |
194 | const struct ofproto_controller *) |
195 | OVS_REQUIRES(ofproto_mutex); | |
196 | static void ofservice_create(struct connmgr *mgr, const char *target, | |
197 | const struct ofproto_controller *) | |
198 | OVS_REQUIRES(ofproto_mutex); | |
199 | static void ofservice_destroy(struct ofservice *) OVS_REQUIRES(ofproto_mutex); | |
19a87e36 BP |
200 | static struct ofservice *ofservice_lookup(struct connmgr *, |
201 | const char *target); | |
202 | ||
203 | /* Connection manager for an OpenFlow switch. */ | |
204 | struct connmgr { | |
205 | struct ofproto *ofproto; | |
206 | char *name; | |
207 | char *local_port_name; | |
208 | ||
a0baa7df BP |
209 | /* OpenFlow connections. |
210 | * | |
211 | * All modifications to 'conns' protected by ofproto_mutex, so that any | |
212 | * traversals from other threads can be made safe by holding the | |
213 | * ofproto_mutex.*/ | |
214 | struct ovs_list conns; /* All ofconns. */ | |
6ea4776b JR |
215 | uint64_t master_election_id; /* monotonically increasing sequence number |
216 | * for master election */ | |
217 | bool master_election_id_defined; | |
19a87e36 | 218 | |
a0baa7df | 219 | /* OpenFlow connection establishment. */ |
19a87e36 BP |
220 | struct hmap services; /* Contains "struct ofservice"s. */ |
221 | struct pvconn **snoops; | |
222 | size_t n_snoops; | |
223 | ||
224 | /* Fail open. */ | |
225 | struct fail_open *fail_open; | |
226 | enum ofproto_fail_mode fail_mode; | |
227 | ||
228 | /* In-band control. */ | |
229 | struct in_band *in_band; | |
19a87e36 BP |
230 | struct sockaddr_in *extra_in_band_remotes; |
231 | size_t n_extra_remotes; | |
232 | int in_band_queue; | |
b9320e51 JR |
233 | |
234 | ATOMIC(int) want_packet_in_on_miss; /* Sum of ofconns' values. */ | |
19a87e36 BP |
235 | }; |
236 | ||
237 | static void update_in_band_remotes(struct connmgr *); | |
238 | static void add_snooper(struct connmgr *, struct vconn *); | |
2b07c8b1 BP |
239 | static void ofmonitor_run(struct connmgr *); |
240 | static void ofmonitor_wait(struct connmgr *); | |
19a87e36 BP |
241 | |
242 | /* Creates and returns a new connection manager owned by 'ofproto'. 'name' is | |
243 | * a name for the ofproto suitable for using in log messages. | |
244 | * 'local_port_name' is the name of the local port (OFPP_LOCAL) within | |
245 | * 'ofproto'. */ | |
246 | struct connmgr * | |
247 | connmgr_create(struct ofproto *ofproto, | |
248 | const char *name, const char *local_port_name) | |
249 | { | |
da0158d1 | 250 | struct connmgr *mgr = xmalloc(sizeof *mgr); |
19a87e36 BP |
251 | mgr->ofproto = ofproto; |
252 | mgr->name = xstrdup(name); | |
253 | mgr->local_port_name = xstrdup(local_port_name); | |
254 | ||
a0baa7df | 255 | ovs_list_init(&mgr->conns); |
6ea4776b JR |
256 | mgr->master_election_id = 0; |
257 | mgr->master_election_id_defined = false; | |
19a87e36 BP |
258 | |
259 | hmap_init(&mgr->services); | |
260 | mgr->snoops = NULL; | |
261 | mgr->n_snoops = 0; | |
262 | ||
263 | mgr->fail_open = NULL; | |
264 | mgr->fail_mode = OFPROTO_FAIL_SECURE; | |
265 | ||
266 | mgr->in_band = NULL; | |
19a87e36 BP |
267 | mgr->extra_in_band_remotes = NULL; |
268 | mgr->n_extra_remotes = 0; | |
269 | mgr->in_band_queue = -1; | |
270 | ||
b9320e51 JR |
271 | atomic_init(&mgr->want_packet_in_on_miss, 0); |
272 | ||
19a87e36 BP |
273 | return mgr; |
274 | } | |
275 | ||
b9320e51 JR |
276 | /* The default "table-miss" behaviour for OpenFlow1.3+ is to drop the |
277 | * packet rather than to send the packet to the controller. | |
278 | * | |
279 | * This function maintains the count of pre-OpenFlow1.3 with controller_id 0, | |
280 | * as we assume these are the controllers that should receive "table-miss" | |
281 | * notifications. */ | |
282 | static void | |
283 | update_want_packet_in_on_miss(struct ofconn *ofconn) | |
284 | { | |
285 | /* We want a packet-in on miss when controller_id is zero and OpenFlow is | |
286 | * lower than version 1.3. */ | |
287 | enum ofputil_protocol p = ofconn->protocol; | |
288 | int new_want = (ofconn->controller_id == 0 && | |
289 | (p == OFPUTIL_P_NONE || | |
290 | ofputil_protocol_to_ofp_version(p) < OFP13_VERSION)); | |
291 | ||
292 | /* Update the setting and the count if necessary. */ | |
293 | int old_want = ofconn->want_packet_in_on_miss; | |
294 | if (old_want != new_want) { | |
295 | atomic_int *dst = &ofconn->connmgr->want_packet_in_on_miss; | |
296 | int count; | |
297 | atomic_read_relaxed(dst, &count); | |
298 | atomic_store_relaxed(dst, count - old_want + new_want); | |
299 | ||
300 | ofconn->want_packet_in_on_miss = new_want; | |
301 | } | |
302 | } | |
303 | ||
19a87e36 BP |
304 | /* Frees 'mgr' and all of its resources. */ |
305 | void | |
306 | connmgr_destroy(struct connmgr *mgr) | |
25010c68 | 307 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 308 | { |
19a87e36 BP |
309 | if (!mgr) { |
310 | return; | |
311 | } | |
312 | ||
da0158d1 | 313 | struct ofservice *ofservice, *next_ofservice; |
a0baa7df BP |
314 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, hmap_node, &mgr->services) { |
315 | ofservice_destroy(ofservice); | |
19a87e36 BP |
316 | } |
317 | hmap_destroy(&mgr->services); | |
a0baa7df | 318 | ovs_assert(ovs_list_is_empty(&mgr->conns)); |
19a87e36 | 319 | |
da0158d1 | 320 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
19a87e36 BP |
321 | pvconn_close(mgr->snoops[i]); |
322 | } | |
323 | free(mgr->snoops); | |
324 | ||
325 | fail_open_destroy(mgr->fail_open); | |
326 | mgr->fail_open = NULL; | |
327 | ||
328 | in_band_destroy(mgr->in_band); | |
329 | mgr->in_band = NULL; | |
330 | free(mgr->extra_in_band_remotes); | |
331 | free(mgr->name); | |
332 | free(mgr->local_port_name); | |
333 | ||
334 | free(mgr); | |
335 | } | |
336 | ||
b20f4073 BP |
337 | /* Does all of the periodic maintenance required by 'mgr'. Calls |
338 | * 'handle_openflow' for each message received on an OpenFlow connection, | |
339 | * passing along the OpenFlow connection itself and the message that was sent. | |
340 | * 'handle_openflow' must not modify or free the message. */ | |
19a87e36 BP |
341 | void |
342 | connmgr_run(struct connmgr *mgr, | |
b20f4073 | 343 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 344 | const struct ovs_list *msgs)) |
15aaf599 | 345 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 346 | { |
b20f4073 | 347 | if (mgr->in_band) { |
6da1e809 BP |
348 | if (!in_band_run(mgr->in_band)) { |
349 | in_band_destroy(mgr->in_band); | |
350 | mgr->in_band = NULL; | |
351 | } | |
19a87e36 BP |
352 | } |
353 | ||
da0158d1 | 354 | struct ofconn *ofconn, *next_ofconn; |
a0baa7df | 355 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, connmgr_node, &mgr->conns) { |
19a87e36 BP |
356 | ofconn_run(ofconn, handle_openflow); |
357 | } | |
2b07c8b1 | 358 | ofmonitor_run(mgr); |
19a87e36 BP |
359 | |
360 | /* Fail-open maintenance. Do this after processing the ofconns since | |
361 | * fail-open checks the status of the controller rconn. */ | |
b20f4073 | 362 | if (mgr->fail_open) { |
19a87e36 BP |
363 | fail_open_run(mgr->fail_open); |
364 | } | |
365 | ||
da0158d1 | 366 | struct ofservice *ofservice; |
a0baa7df BP |
367 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { |
368 | ofservice_run(ofservice); | |
19a87e36 BP |
369 | } |
370 | ||
da0158d1 | 371 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
19a87e36 | 372 | struct vconn *vconn; |
da0158d1 | 373 | int retval = pvconn_accept(mgr->snoops[i], &vconn); |
19a87e36 BP |
374 | if (!retval) { |
375 | add_snooper(mgr, vconn); | |
376 | } else if (retval != EAGAIN) { | |
10a89ef0 | 377 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); |
19a87e36 BP |
378 | } |
379 | } | |
380 | } | |
381 | ||
b20f4073 | 382 | /* Causes the poll loop to wake up when connmgr_run() needs to run. */ |
19a87e36 | 383 | void |
b20f4073 | 384 | connmgr_wait(struct connmgr *mgr) |
19a87e36 | 385 | { |
19a87e36 | 386 | struct ofconn *ofconn; |
a0baa7df | 387 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
b20f4073 | 388 | ofconn_wait(ofconn); |
19a87e36 | 389 | } |
da0158d1 | 390 | |
2b07c8b1 | 391 | ofmonitor_wait(mgr); |
da0158d1 | 392 | |
b20f4073 | 393 | if (mgr->in_band) { |
19a87e36 BP |
394 | in_band_wait(mgr->in_band); |
395 | } | |
da0158d1 | 396 | |
b20f4073 | 397 | if (mgr->fail_open) { |
19a87e36 BP |
398 | fail_open_wait(mgr->fail_open); |
399 | } | |
da0158d1 BP |
400 | |
401 | struct ofservice *ofservice; | |
a0baa7df BP |
402 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { |
403 | ofservice_wait(ofservice); | |
19a87e36 | 404 | } |
da0158d1 BP |
405 | |
406 | for (size_t i = 0; i < mgr->n_snoops; i++) { | |
19a87e36 BP |
407 | pvconn_wait(mgr->snoops[i]); |
408 | } | |
409 | } | |
410 | ||
0d085684 BP |
411 | /* Adds some memory usage statistics for 'mgr' into 'usage', for use with |
412 | * memory_report(). */ | |
413 | void | |
414 | connmgr_get_memory_usage(const struct connmgr *mgr, struct simap *usage) | |
415 | { | |
0d085684 BP |
416 | unsigned int packets = 0; |
417 | unsigned int ofconns = 0; | |
418 | ||
a0baa7df BP |
419 | struct ofconn *ofconn; |
420 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { | |
0d085684 BP |
421 | ofconns++; |
422 | ||
423 | packets += rconn_count_txqlen(ofconn->rconn); | |
da0158d1 | 424 | for (int i = 0; i < N_SCHEDULERS; i++) { |
a413195e BP |
425 | struct pinsched_stats stats; |
426 | ||
427 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
ea53e3a8 | 428 | packets += stats.n_queued; |
0d085684 | 429 | } |
0d085684 BP |
430 | } |
431 | simap_increase(usage, "ofconns", ofconns); | |
432 | simap_increase(usage, "packets", packets); | |
433 | } | |
434 | ||
19a87e36 BP |
435 | /* Returns the ofproto that owns 'ofconn''s connmgr. */ |
436 | struct ofproto * | |
437 | ofconn_get_ofproto(const struct ofconn *ofconn) | |
438 | { | |
439 | return ofconn->connmgr->ofproto; | |
440 | } | |
7fdd2082 FL |
441 | |
442 | /* Sets the bundle idle timeout to 'timeout' seconds, interpreting 0 as | |
443 | * requesting the default timeout. | |
444 | * | |
445 | * The OpenFlow spec mandates the timeout to be at least one second; . */ | |
446 | void | |
447 | connmgr_set_bundle_idle_timeout(unsigned timeout) | |
448 | { | |
449 | bundle_idle_timeout = (timeout | |
450 | ? sat_mul(timeout, 1000) | |
451 | : BUNDLE_IDLE_TIMEOUT_DEFAULT); | |
452 | } | |
19a87e36 BP |
453 | \f |
454 | /* OpenFlow configuration. */ | |
455 | ||
feb8a80b | 456 | static void update_fail_open(struct connmgr *) OVS_EXCLUDED(ofproto_mutex); |
19a87e36 | 457 | static int set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, |
81e2083f | 458 | const struct sset *); |
19a87e36 BP |
459 | |
460 | /* Returns true if 'mgr' has any configured primary controllers. | |
461 | * | |
462 | * Service controllers do not count, but configured primary controllers do | |
463 | * count whether or not they are currently connected. */ | |
464 | bool | |
465 | connmgr_has_controllers(const struct connmgr *mgr) | |
466 | { | |
a0baa7df BP |
467 | struct ofservice *ofservice; |
468 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
469 | if (ofservice->type == OFCONN_PRIMARY) { | |
470 | return true; | |
471 | } | |
472 | } | |
473 | return false; | |
474 | } | |
475 | ||
476 | static struct ofconn * | |
477 | ofservice_first_conn(const struct ofservice *ofservice) | |
478 | { | |
479 | return (ovs_list_is_empty(&ofservice->conns) | |
480 | ? NULL | |
481 | : CONTAINER_OF(ofservice->conns.next, | |
482 | struct ofconn, ofservice_node)); | |
19a87e36 BP |
483 | } |
484 | ||
485 | /* Initializes 'info' and populates it with information about each configured | |
486 | * primary controller. The keys in 'info' are the controllers' targets; the | |
487 | * data values are corresponding "struct ofproto_controller_info". | |
488 | * | |
489 | * The caller owns 'info' and everything in it and should free it when it is no | |
490 | * longer needed. */ | |
491 | void | |
492 | connmgr_get_controller_info(struct connmgr *mgr, struct shash *info) | |
493 | { | |
a0baa7df BP |
494 | struct ofservice *ofservice; |
495 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
496 | const struct rconn *rconn = ofservice->rconn; | |
497 | if (!rconn) { | |
498 | continue; | |
499 | } | |
5d279086 | 500 | const char *target = rconn_get_target(rconn); |
19a87e36 | 501 | |
5d279086 | 502 | if (!shash_find(info, target)) { |
a0baa7df | 503 | struct ofconn *ofconn = ofservice_first_conn(ofservice); |
5d279086 | 504 | struct ofproto_controller_info *cinfo = xmalloc(sizeof *cinfo); |
393f479c BP |
505 | long long int now = time_msec(); |
506 | long long int last_connection = rconn_get_last_connection(rconn); | |
507 | long long int last_disconnect = rconn_get_last_disconnect(rconn); | |
5d279086 | 508 | int last_error = rconn_get_last_error(rconn); |
a413195e | 509 | int i; |
19a87e36 | 510 | |
5d279086 | 511 | shash_add(info, target, cinfo); |
19a87e36 | 512 | |
5d279086 | 513 | cinfo->is_connected = rconn_is_connected(rconn); |
a0baa7df | 514 | cinfo->role = ofconn ? ofconn->role : OFPCR12_ROLE_NOCHANGE; |
19a87e36 | 515 | |
f5ad2e5f | 516 | smap_init(&cinfo->pairs); |
5d279086 | 517 | if (last_error) { |
f5ad2e5f BP |
518 | smap_add(&cinfo->pairs, "last_error", |
519 | ovs_retval_to_string(last_error)); | |
5d279086 | 520 | } |
19a87e36 | 521 | |
f5ad2e5f | 522 | smap_add(&cinfo->pairs, "state", rconn_get_state(rconn)); |
5d279086 | 523 | |
393f479c | 524 | if (last_connection != LLONG_MIN) { |
f5ad2e5f | 525 | smap_add_format(&cinfo->pairs, "sec_since_connect", |
393f479c | 526 | "%lld", (now - last_connection) / 1000); |
5d279086 AE |
527 | } |
528 | ||
393f479c | 529 | if (last_disconnect != LLONG_MIN) { |
f5ad2e5f | 530 | smap_add_format(&cinfo->pairs, "sec_since_disconnect", |
393f479c | 531 | "%lld", (now - last_disconnect) / 1000); |
5d279086 | 532 | } |
a413195e BP |
533 | |
534 | for (i = 0; i < N_SCHEDULERS; i++) { | |
a0baa7df | 535 | if (ofconn && ofconn->schedulers[i]) { |
a413195e BP |
536 | const char *name = i ? "miss" : "action"; |
537 | struct pinsched_stats stats; | |
538 | ||
539 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
540 | smap_add_nocopy(&cinfo->pairs, | |
541 | xasprintf("packet-in-%s-backlog", name), | |
542 | xasprintf("%u", stats.n_queued)); | |
543 | smap_add_nocopy(&cinfo->pairs, | |
544 | xasprintf("packet-in-%s-bypassed", name), | |
545 | xasprintf("%llu", stats.n_normal)); | |
546 | smap_add_nocopy(&cinfo->pairs, | |
547 | xasprintf("packet-in-%s-queued", name), | |
548 | xasprintf("%llu", stats.n_limited)); | |
549 | smap_add_nocopy(&cinfo->pairs, | |
550 | xasprintf("packet-in-%s-dropped", name), | |
551 | xasprintf("%llu", stats.n_queue_dropped)); | |
552 | } | |
553 | } | |
19a87e36 BP |
554 | } |
555 | } | |
556 | } | |
557 | ||
72ba2ed3 AE |
558 | void |
559 | connmgr_free_controller_info(struct shash *info) | |
560 | { | |
561 | struct shash_node *node; | |
562 | ||
563 | SHASH_FOR_EACH (node, info) { | |
564 | struct ofproto_controller_info *cinfo = node->data; | |
f5ad2e5f | 565 | smap_destroy(&cinfo->pairs); |
72ba2ed3 AE |
566 | free(cinfo); |
567 | } | |
568 | shash_destroy(info); | |
569 | } | |
570 | ||
19a87e36 BP |
571 | /* Changes 'mgr''s set of controllers to the 'n_controllers' controllers in |
572 | * 'controllers'. */ | |
573 | void | |
af26093a | 574 | connmgr_set_controllers(struct connmgr *mgr, struct shash *controllers) |
3b0c6b56 | 575 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 576 | { |
08fd19f0 | 577 | bool had_controllers = connmgr_has_controllers(mgr); |
19a87e36 | 578 | |
3b0c6b56 BP |
579 | /* Required to add and remove ofconns. This could probably be narrowed to |
580 | * cover a smaller amount of code, if that yielded some benefit. */ | |
581 | ovs_mutex_lock(&ofproto_mutex); | |
582 | ||
a0baa7df | 583 | /* Create newly configured services. */ |
af26093a BP |
584 | struct shash_node *node; |
585 | SHASH_FOR_EACH (node, controllers) { | |
586 | const char *target = node->name; | |
587 | const struct ofproto_controller *c = node->data; | |
a0baa7df BP |
588 | if (!ofservice_lookup(mgr, target)) { |
589 | ofservice_create(mgr, target, c); | |
19a87e36 BP |
590 | } |
591 | } | |
592 | ||
593 | /* Delete services that are no longer configured. | |
594 | * Update configuration of all now-existing services. */ | |
da0158d1 | 595 | struct ofservice *ofservice, *next_ofservice; |
a0baa7df BP |
596 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, hmap_node, &mgr->services) { |
597 | const char *target = ofservice->target; | |
af26093a | 598 | struct ofproto_controller *c = shash_find_data(controllers, target); |
19a87e36 | 599 | if (!c) { |
a0baa7df BP |
600 | VLOG_INFO("%s: removed %s controller \"%s\"", |
601 | mgr->name, ofconn_type_to_string(ofservice->type), | |
602 | target); | |
603 | ofservice_destroy(ofservice); | |
19a87e36 BP |
604 | } else { |
605 | ofservice_reconfigure(ofservice, c); | |
606 | } | |
607 | } | |
608 | ||
c7be3f55 BP |
609 | ovs_mutex_unlock(&ofproto_mutex); |
610 | ||
19a87e36 BP |
611 | update_in_band_remotes(mgr); |
612 | update_fail_open(mgr); | |
08fd19f0 BP |
613 | if (had_controllers != connmgr_has_controllers(mgr)) { |
614 | ofproto_flush_flows(mgr->ofproto); | |
615 | } | |
19a87e36 BP |
616 | } |
617 | ||
618 | /* Drops the connections between 'mgr' and all of its primary and secondary | |
619 | * controllers, forcing them to reconnect. */ | |
620 | void | |
621 | connmgr_reconnect(const struct connmgr *mgr) | |
622 | { | |
623 | struct ofconn *ofconn; | |
624 | ||
a0baa7df | 625 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
19a87e36 BP |
626 | rconn_reconnect(ofconn->rconn); |
627 | } | |
628 | } | |
629 | ||
630 | /* Sets the "snoops" for 'mgr' to the pvconn targets listed in 'snoops'. | |
631 | * | |
632 | * A "snoop" is a pvconn to which every OpenFlow message to or from the most | |
633 | * important controller on 'mgr' is mirrored. */ | |
634 | int | |
81e2083f | 635 | connmgr_set_snoops(struct connmgr *mgr, const struct sset *snoops) |
19a87e36 BP |
636 | { |
637 | return set_pvconns(&mgr->snoops, &mgr->n_snoops, snoops); | |
638 | } | |
639 | ||
640 | /* Adds each of the snoops currently configured on 'mgr' to 'snoops'. */ | |
641 | void | |
81e2083f | 642 | connmgr_get_snoops(const struct connmgr *mgr, struct sset *snoops) |
19a87e36 | 643 | { |
da0158d1 | 644 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
81e2083f | 645 | sset_add(snoops, pvconn_get_name(mgr->snoops[i])); |
19a87e36 BP |
646 | } |
647 | } | |
648 | ||
81e2083f BP |
649 | /* Returns true if 'mgr' has at least one snoop, false if it has none. */ |
650 | bool | |
651 | connmgr_has_snoops(const struct connmgr *mgr) | |
652 | { | |
653 | return mgr->n_snoops > 0; | |
654 | } | |
655 | ||
19a87e36 BP |
656 | static void |
657 | update_in_band_remotes(struct connmgr *mgr) | |
658 | { | |
19a87e36 | 659 | /* Allocate enough memory for as many remotes as we could possibly have. */ |
a0baa7df | 660 | size_t max_addrs = mgr->n_extra_remotes + hmap_count(&mgr->services); |
da0158d1 BP |
661 | struct sockaddr_in *addrs = xmalloc(max_addrs * sizeof *addrs); |
662 | size_t n_addrs = 0; | |
19a87e36 BP |
663 | |
664 | /* Add all the remotes. */ | |
a0baa7df BP |
665 | struct ofservice *ofservice; |
666 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
667 | const char *target = ofservice->target; | |
02334943 JR |
668 | union { |
669 | struct sockaddr_storage ss; | |
670 | struct sockaddr_in in; | |
671 | } sa; | |
19a87e36 | 672 | |
a0baa7df | 673 | if (ofservice->s.band == OFPROTO_IN_BAND |
d4763d1d | 674 | && stream_parse_target_with_default_port(target, OFP_PORT, &sa.ss) |
02334943 JR |
675 | && sa.ss.ss_family == AF_INET) { |
676 | addrs[n_addrs++] = sa.in; | |
19a87e36 BP |
677 | } |
678 | } | |
da0158d1 | 679 | for (size_t i = 0; i < mgr->n_extra_remotes; i++) { |
19a87e36 BP |
680 | addrs[n_addrs++] = mgr->extra_in_band_remotes[i]; |
681 | } | |
682 | ||
683 | /* Create or update or destroy in-band. */ | |
684 | if (n_addrs) { | |
685 | if (!mgr->in_band) { | |
686 | in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band); | |
687 | } | |
19a87e36 | 688 | } else { |
6da1e809 BP |
689 | /* in_band_run() needs a chance to delete any existing in-band flows. |
690 | * We will destroy mgr->in_band after it's done with that. */ | |
691 | } | |
692 | if (mgr->in_band) { | |
66a9ef7a | 693 | in_band_set_queue(mgr->in_band, mgr->in_band_queue); |
6da1e809 | 694 | in_band_set_remotes(mgr->in_band, addrs, n_addrs); |
19a87e36 BP |
695 | } |
696 | ||
697 | /* Clean up. */ | |
698 | free(addrs); | |
699 | } | |
700 | ||
701 | static void | |
702 | update_fail_open(struct connmgr *mgr) | |
feb8a80b | 703 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 BP |
704 | { |
705 | if (connmgr_has_controllers(mgr) | |
706 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
707 | if (!mgr->fail_open) { | |
708 | mgr->fail_open = fail_open_create(mgr->ofproto, mgr); | |
709 | } | |
710 | } else { | |
25010c68 | 711 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 | 712 | fail_open_destroy(mgr->fail_open); |
25010c68 | 713 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
714 | mgr->fail_open = NULL; |
715 | } | |
716 | } | |
717 | ||
718 | static int | |
719 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
81e2083f | 720 | const struct sset *sset) |
19a87e36 | 721 | { |
da0158d1 BP |
722 | /* Free the old pvconns. */ |
723 | struct pvconn **old_pvconns = *pvconnsp; | |
724 | size_t old_n_pvconns = *n_pvconnsp; | |
725 | for (size_t i = 0; i < old_n_pvconns; i++) { | |
726 | pvconn_close(old_pvconns[i]); | |
19a87e36 | 727 | } |
da0158d1 BP |
728 | free(old_pvconns); |
729 | ||
730 | /* Populate the new pvconns. */ | |
731 | struct pvconn **new_pvconns = xmalloc(sset_count(sset) | |
732 | * sizeof *new_pvconns); | |
733 | size_t new_n_pvconns = 0; | |
19a87e36 | 734 | |
da0158d1 BP |
735 | int retval = 0; |
736 | const char *name; | |
81e2083f | 737 | SSET_FOR_EACH (name, sset) { |
19a87e36 | 738 | struct pvconn *pvconn; |
da0158d1 | 739 | int error = pvconn_open(name, 0, 0, &pvconn); |
19a87e36 | 740 | if (!error) { |
da0158d1 | 741 | new_pvconns[new_n_pvconns++] = pvconn; |
19a87e36 | 742 | } else { |
10a89ef0 | 743 | VLOG_ERR("failed to listen on %s: %s", name, ovs_strerror(error)); |
19a87e36 BP |
744 | if (!retval) { |
745 | retval = error; | |
746 | } | |
747 | } | |
748 | } | |
749 | ||
da0158d1 BP |
750 | *pvconnsp = new_pvconns; |
751 | *n_pvconnsp = new_n_pvconns; | |
19a87e36 BP |
752 | |
753 | return retval; | |
754 | } | |
755 | ||
756 | /* Returns a "preference level" for snooping 'ofconn'. A higher return value | |
757 | * means that 'ofconn' is more interesting for monitoring than a lower return | |
758 | * value. */ | |
759 | static int | |
a0baa7df | 760 | snoop_preference(const struct ofservice *ofservice) |
19a87e36 | 761 | { |
a0baa7df BP |
762 | struct ofconn *ofconn = ofservice_first_conn(ofservice); |
763 | if (!ofconn) { | |
764 | return 0; | |
765 | } | |
766 | ||
19a87e36 | 767 | switch (ofconn->role) { |
f4f1ea7e | 768 | case OFPCR12_ROLE_MASTER: |
19a87e36 | 769 | return 3; |
f4f1ea7e | 770 | case OFPCR12_ROLE_EQUAL: |
19a87e36 | 771 | return 2; |
f4f1ea7e | 772 | case OFPCR12_ROLE_SLAVE: |
19a87e36 | 773 | return 1; |
f4f1ea7e | 774 | case OFPCR12_ROLE_NOCHANGE: |
19a87e36 BP |
775 | default: |
776 | /* Shouldn't happen. */ | |
777 | return 0; | |
778 | } | |
779 | } | |
780 | ||
781 | /* One of 'mgr''s "snoop" pvconns has accepted a new connection on 'vconn'. | |
782 | * Connects this vconn to a controller. */ | |
783 | static void | |
784 | add_snooper(struct connmgr *mgr, struct vconn *vconn) | |
785 | { | |
19a87e36 | 786 | /* Pick a controller for monitoring. */ |
a0baa7df BP |
787 | struct ofservice *best = NULL; |
788 | struct ofservice *ofservice; | |
789 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
790 | if (ofservice->rconn && | |
791 | (!best || snoop_preference(ofservice) > snoop_preference(best))) { | |
792 | best = ofservice; | |
19a87e36 BP |
793 | } |
794 | } | |
795 | ||
796 | if (best) { | |
797 | rconn_add_monitor(best->rconn, vconn); | |
798 | } else { | |
799 | VLOG_INFO_RL(&rl, "no controller connection to snoop"); | |
800 | vconn_close(vconn); | |
801 | } | |
802 | } | |
803 | \f | |
804 | /* Public ofconn functions. */ | |
805 | ||
806 | /* Returns the connection type, either OFCONN_PRIMARY or OFCONN_SERVICE. */ | |
807 | enum ofconn_type | |
808 | ofconn_get_type(const struct ofconn *ofconn) | |
809 | { | |
810 | return ofconn->type; | |
811 | } | |
812 | ||
147cc9d3 BP |
813 | /* If a master election id is defined, stores it into '*idp' and returns |
814 | * true. Otherwise, stores UINT64_MAX into '*idp' and returns false. */ | |
815 | bool | |
816 | ofconn_get_master_election_id(const struct ofconn *ofconn, uint64_t *idp) | |
817 | { | |
818 | *idp = (ofconn->connmgr->master_election_id_defined | |
819 | ? ofconn->connmgr->master_election_id | |
820 | : UINT64_MAX); | |
821 | return ofconn->connmgr->master_election_id_defined; | |
822 | } | |
823 | ||
6ea4776b JR |
824 | /* Sets the master election id. |
825 | * | |
826 | * Returns true if successful, false if the id is stale | |
827 | */ | |
828 | bool | |
829 | ofconn_set_master_election_id(struct ofconn *ofconn, uint64_t id) | |
830 | { | |
831 | if (ofconn->connmgr->master_election_id_defined | |
832 | && | |
833 | /* Unsigned difference interpreted as a two's complement signed | |
834 | * value */ | |
835 | (int64_t)(id - ofconn->connmgr->master_election_id) < 0) { | |
836 | return false; | |
837 | } | |
838 | ofconn->connmgr->master_election_id = id; | |
839 | ofconn->connmgr->master_election_id_defined = true; | |
840 | ||
841 | return true; | |
842 | } | |
843 | ||
19a87e36 BP |
844 | /* Returns the role configured for 'ofconn'. |
845 | * | |
f4f1ea7e BP |
846 | * The default role, if no other role has been set, is OFPCR12_ROLE_EQUAL. */ |
847 | enum ofp12_controller_role | |
19a87e36 BP |
848 | ofconn_get_role(const struct ofconn *ofconn) |
849 | { | |
850 | return ofconn->role; | |
851 | } | |
852 | ||
00467f73 AC |
853 | void |
854 | ofconn_send_role_status(struct ofconn *ofconn, uint32_t role, uint8_t reason) | |
855 | { | |
856 | struct ofputil_role_status status; | |
00467f73 AC |
857 | status.reason = reason; |
858 | status.role = role; | |
859 | ofconn_get_master_election_id(ofconn, &status.generation_id); | |
860 | ||
da0158d1 BP |
861 | struct ofpbuf *buf |
862 | = ofputil_encode_role_status(&status, ofconn_get_protocol(ofconn)); | |
6751a4b4 BP |
863 | if (buf) { |
864 | ofconn_send(ofconn, buf, NULL); | |
865 | } | |
00467f73 AC |
866 | } |
867 | ||
f4f1ea7e BP |
868 | /* Changes 'ofconn''s role to 'role'. If 'role' is OFPCR12_ROLE_MASTER then |
869 | * any existing master is demoted to a slave. */ | |
19a87e36 | 870 | void |
f4f1ea7e | 871 | ofconn_set_role(struct ofconn *ofconn, enum ofp12_controller_role role) |
19a87e36 | 872 | { |
00467f73 | 873 | if (role != ofconn->role && role == OFPCR12_ROLE_MASTER) { |
19a87e36 BP |
874 | struct ofconn *other; |
875 | ||
a0baa7df | 876 | LIST_FOR_EACH (other, connmgr_node, &ofconn->connmgr->conns) { |
f4f1ea7e BP |
877 | if (other->role == OFPCR12_ROLE_MASTER) { |
878 | other->role = OFPCR12_ROLE_SLAVE; | |
da0158d1 BP |
879 | ofconn_send_role_status(other, OFPCR12_ROLE_SLAVE, |
880 | OFPCRR_MASTER_REQUEST); | |
19a87e36 BP |
881 | } |
882 | } | |
883 | } | |
884 | ofconn->role = role; | |
885 | } | |
886 | ||
f0fd1a17 | 887 | void |
80d5aefd | 888 | ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool enable) |
f0fd1a17 | 889 | { |
a930d4c5 | 890 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd BP |
891 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
892 | if (enable) { | |
a930d4c5 | 893 | ac.master[OAM_PACKET_IN] |= bit; |
80d5aefd | 894 | } else { |
a930d4c5 | 895 | ac.master[OAM_PACKET_IN] &= ~bit; |
80d5aefd | 896 | } |
a930d4c5 | 897 | ofconn_set_async_config(ofconn, &ac); |
f0fd1a17 PS |
898 | } |
899 | ||
900 | bool | |
901 | ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn) | |
902 | { | |
a930d4c5 | 903 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd | 904 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
a930d4c5 | 905 | return (ac.master[OAM_PACKET_IN] & bit) != 0; |
f0fd1a17 PS |
906 | } |
907 | ||
27527aa0 | 908 | /* Returns the currently configured protocol for 'ofconn', one of OFPUTIL_P_*. |
19a87e36 | 909 | * |
eb12aa89 BP |
910 | * Returns OFPUTIL_P_NONE, which is not a valid protocol, if 'ofconn' hasn't |
911 | * completed version negotiation. This can't happen if at least one OpenFlow | |
912 | * message, other than OFPT_HELLO, has been received on the connection (such as | |
913 | * in ofproto.c's message handling code), since version negotiation is a | |
914 | * prerequisite for starting to receive messages. This means that | |
915 | * OFPUTIL_P_NONE is a special case that most callers need not worry about. */ | |
27527aa0 | 916 | enum ofputil_protocol |
e3d560db | 917 | ofconn_get_protocol(const struct ofconn *ofconn) |
19a87e36 | 918 | { |
eb12aa89 BP |
919 | if (ofconn->protocol == OFPUTIL_P_NONE && |
920 | rconn_is_connected(ofconn->rconn)) { | |
921 | int version = rconn_get_version(ofconn->rconn); | |
922 | if (version > 0) { | |
923 | ofconn_set_protocol(CONST_CAST(struct ofconn *, ofconn), | |
924 | ofputil_protocol_from_ofp_version(version)); | |
925 | } | |
926 | } | |
927 | ||
27527aa0 | 928 | return ofconn->protocol; |
19a87e36 BP |
929 | } |
930 | ||
27527aa0 BP |
931 | /* Sets the protocol for 'ofconn' to 'protocol' (one of OFPUTIL_P_*). |
932 | * | |
933 | * (This doesn't actually send anything to accomplish this. Presumably the | |
934 | * caller already did that.) */ | |
19a87e36 | 935 | void |
27527aa0 | 936 | ofconn_set_protocol(struct ofconn *ofconn, enum ofputil_protocol protocol) |
19a87e36 | 937 | { |
27527aa0 | 938 | ofconn->protocol = protocol; |
b9320e51 | 939 | update_want_packet_in_on_miss(ofconn); |
19a87e36 BP |
940 | } |
941 | ||
54834960 EJ |
942 | /* Returns the currently configured packet in format for 'ofconn', one of |
943 | * NXPIF_*. | |
944 | * | |
6409e008 | 945 | * The default, if no other format has been set, is NXPIF_STANDARD. */ |
d8790c08 | 946 | enum ofputil_packet_in_format |
54834960 EJ |
947 | ofconn_get_packet_in_format(struct ofconn *ofconn) |
948 | { | |
949 | return ofconn->packet_in_format; | |
950 | } | |
951 | ||
952 | /* Sets the packet in format for 'ofconn' to 'packet_in_format' (one of | |
953 | * NXPIF_*). */ | |
954 | void | |
955 | ofconn_set_packet_in_format(struct ofconn *ofconn, | |
d8790c08 | 956 | enum ofputil_packet_in_format packet_in_format) |
54834960 EJ |
957 | { |
958 | ofconn->packet_in_format = packet_in_format; | |
959 | } | |
960 | ||
a7349929 BP |
961 | /* Sets the controller connection ID for 'ofconn' to 'controller_id'. |
962 | * | |
963 | * The connection controller ID is used for OFPP_CONTROLLER and | |
964 | * NXAST_CONTROLLER actions. See "struct nx_action_controller" for details. */ | |
965 | void | |
966 | ofconn_set_controller_id(struct ofconn *ofconn, uint16_t controller_id) | |
967 | { | |
968 | ofconn->controller_id = controller_id; | |
b9320e51 | 969 | update_want_packet_in_on_miss(ofconn); |
a7349929 BP |
970 | } |
971 | ||
19a87e36 BP |
972 | /* Returns the default miss send length for 'ofconn'. */ |
973 | int | |
974 | ofconn_get_miss_send_len(const struct ofconn *ofconn) | |
975 | { | |
976 | return ofconn->miss_send_len; | |
977 | } | |
978 | ||
979 | /* Sets the default miss send length for 'ofconn' to 'miss_send_len'. */ | |
980 | void | |
981 | ofconn_set_miss_send_len(struct ofconn *ofconn, int miss_send_len) | |
982 | { | |
983 | ofconn->miss_send_len = miss_send_len; | |
984 | } | |
985 | ||
80d5aefd BP |
986 | void |
987 | ofconn_set_async_config(struct ofconn *ofconn, | |
a930d4c5 | 988 | const struct ofputil_async_cfg *ac) |
80d5aefd | 989 | { |
a930d4c5 BP |
990 | if (!ofconn->async_cfg) { |
991 | ofconn->async_cfg = xmalloc(sizeof *ofconn->async_cfg); | |
992 | } | |
993 | *ofconn->async_cfg = *ac; | |
e19a6769 YHW |
994 | |
995 | if (ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)) | |
996 | < OFP14_VERSION) { | |
997 | if (ofconn->async_cfg->master[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
998 | ofconn->async_cfg->master[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
999 | } | |
1000 | if (ofconn->async_cfg->slave[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
1001 | ofconn->async_cfg->slave[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
1002 | } | |
1003 | } | |
80d5aefd BP |
1004 | } |
1005 | ||
a930d4c5 BP |
1006 | struct ofputil_async_cfg |
1007 | ofconn_get_async_config(const struct ofconn *ofconn) | |
c423b3b3 | 1008 | { |
a930d4c5 BP |
1009 | if (ofconn->async_cfg) { |
1010 | return *ofconn->async_cfg; | |
3a11fd5b SS |
1011 | } |
1012 | ||
a930d4c5 | 1013 | int version = rconn_get_version(ofconn->rconn); |
a0baa7df | 1014 | return (version < 0 || !ofconn->ofservice->s.enable_async_msgs |
a930d4c5 BP |
1015 | ? OFPUTIL_ASYNC_CFG_INIT |
1016 | : ofputil_async_cfg_default(version)); | |
c423b3b3 AC |
1017 | } |
1018 | ||
19a87e36 BP |
1019 | /* Sends 'msg' on 'ofconn', accounting it as a reply. (If there is a |
1020 | * sufficient number of OpenFlow replies in-flight on a single ofconn, then the | |
1021 | * connmgr will stop accepting new OpenFlow requests on that ofconn until the | |
1022 | * controller has accepted some of the replies.) */ | |
1023 | void | |
1024 | ofconn_send_reply(const struct ofconn *ofconn, struct ofpbuf *msg) | |
1025 | { | |
1026 | ofconn_send(ofconn, msg, ofconn->reply_counter); | |
1027 | } | |
1028 | ||
63f2140a BP |
1029 | /* Sends each of the messages in list 'replies' on 'ofconn' in order, |
1030 | * accounting them as replies. */ | |
1031 | void | |
ca6ba700 | 1032 | ofconn_send_replies(const struct ofconn *ofconn, struct ovs_list *replies) |
63f2140a | 1033 | { |
5f03c983 | 1034 | struct ofpbuf *reply; |
63f2140a | 1035 | |
5f03c983 | 1036 | LIST_FOR_EACH_POP (reply, list_node, replies) { |
63f2140a BP |
1037 | ofconn_send_reply(ofconn, reply); |
1038 | } | |
1039 | } | |
1040 | ||
52c57cbb | 1041 | /* Sends 'error' on 'ofconn', as a reply to 'request'. */ |
1be5ff75 BP |
1042 | void |
1043 | ofconn_send_error(const struct ofconn *ofconn, | |
90bf1e07 | 1044 | const struct ofp_header *request, enum ofperr error) |
1be5ff75 | 1045 | { |
07c8ec21 | 1046 | static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10); |
da0158d1 | 1047 | struct ofpbuf *reply = ofperr_encode_reply(error, request); |
07c8ec21 | 1048 | if (!VLOG_DROP_INFO(&err_rl)) { |
da0158d1 | 1049 | size_t request_len = ntohs(request->length); |
07c8ec21 | 1050 | |
da0158d1 BP |
1051 | enum ofpraw raw; |
1052 | const char *type_name = (!ofpraw_decode_partial(&raw, request, | |
1053 | MIN(64, request_len)) | |
1054 | ? ofpraw_get_name(raw) | |
1055 | : "invalid"); | |
07c8ec21 BP |
1056 | |
1057 | VLOG_INFO("%s: sending %s error reply to %s message", | |
1058 | rconn_get_name(ofconn->rconn), ofperr_to_string(error), | |
1059 | type_name); | |
1060 | } | |
1061 | ofconn_send_reply(ofconn, reply); | |
1be5ff75 BP |
1062 | } |
1063 | ||
696d1bcf BP |
1064 | /* Reports that a flow_mod operation of the type specified by 'command' was |
1065 | * successfully executed by 'ofconn', so that the connmgr can log it. */ | |
1066 | void | |
1067 | ofconn_report_flow_mod(struct ofconn *ofconn, | |
1068 | enum ofp_flow_mod_command command) | |
1069 | { | |
696d1bcf BP |
1070 | switch (command) { |
1071 | case OFPFC_ADD: | |
1072 | ofconn->n_add++; | |
1073 | break; | |
1074 | ||
1075 | case OFPFC_MODIFY: | |
1076 | case OFPFC_MODIFY_STRICT: | |
1077 | ofconn->n_modify++; | |
1078 | break; | |
1079 | ||
1080 | case OFPFC_DELETE: | |
1081 | case OFPFC_DELETE_STRICT: | |
1082 | ofconn->n_delete++; | |
1083 | break; | |
1084 | } | |
1085 | ||
da0158d1 | 1086 | long long int now = time_msec(); |
696d1bcf BP |
1087 | if (ofconn->next_op_report == LLONG_MAX) { |
1088 | ofconn->first_op = now; | |
1089 | ofconn->next_op_report = MAX(now + 10 * 1000, ofconn->op_backoff); | |
1090 | ofconn->op_backoff = ofconn->next_op_report + 60 * 1000; | |
1091 | } | |
1092 | ofconn->last_op = now; | |
1093 | } | |
ff09bc08 JR |
1094 | \f |
1095 | /* OpenFlow 1.4 bundles. */ | |
696d1bcf | 1096 | |
ff09bc08 JR |
1097 | static inline uint32_t |
1098 | bundle_hash(uint32_t id) | |
777af88d | 1099 | { |
ff09bc08 | 1100 | return hash_int(id, 0); |
777af88d AC |
1101 | } |
1102 | ||
ff09bc08 JR |
1103 | struct ofp_bundle * |
1104 | ofconn_get_bundle(struct ofconn *ofconn, uint32_t id) | |
1105 | { | |
1106 | struct ofp_bundle *bundle; | |
1107 | ||
1108 | HMAP_FOR_EACH_IN_BUCKET(bundle, node, bundle_hash(id), &ofconn->bundles) { | |
1109 | if (bundle->id == id) { | |
1110 | return bundle; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | return NULL; | |
1115 | } | |
1116 | ||
52c57cbb | 1117 | void |
ff09bc08 JR |
1118 | ofconn_insert_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1119 | { | |
ff09bc08 | 1120 | hmap_insert(&ofconn->bundles, &bundle->node, bundle_hash(bundle->id)); |
ff09bc08 JR |
1121 | } |
1122 | ||
52c57cbb | 1123 | void |
ff09bc08 JR |
1124 | ofconn_remove_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1125 | { | |
1126 | hmap_remove(&ofconn->bundles, &bundle->node); | |
ff09bc08 JR |
1127 | } |
1128 | ||
1129 | static void | |
1130 | bundle_remove_all(struct ofconn *ofconn) | |
1131 | { | |
1132 | struct ofp_bundle *b, *next; | |
1133 | ||
1134 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { | |
0c78eebe | 1135 | ofp_bundle_remove__(ofconn, b); |
ff09bc08 JR |
1136 | } |
1137 | } | |
51bb26fa JR |
1138 | |
1139 | static void | |
1140 | bundle_remove_expired(struct ofconn *ofconn, long long int now) | |
1141 | { | |
7fdd2082 | 1142 | long long int limit = now - bundle_idle_timeout; |
51bb26fa | 1143 | |
da0158d1 | 1144 | struct ofp_bundle *b, *next; |
51bb26fa JR |
1145 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { |
1146 | if (b->used <= limit) { | |
52c57cbb | 1147 | ofconn_send_error(ofconn, b->msg, OFPERR_OFPBFC_TIMEOUT); |
0c78eebe | 1148 | ofp_bundle_remove__(ofconn, b); |
51bb26fa JR |
1149 | } |
1150 | } | |
1151 | } | |
19a87e36 BP |
1152 | \f |
1153 | /* Private ofconn functions. */ | |
1154 | ||
a0baa7df BP |
1155 | static void |
1156 | ofconn_create(struct ofservice *ofservice, struct rconn *rconn, | |
c66be90b | 1157 | const struct ofproto_controller *settings) |
a0baa7df | 1158 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 1159 | { |
a0baa7df | 1160 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 | 1161 | |
da0158d1 | 1162 | struct ofconn *ofconn = xzalloc(sizeof *ofconn); |
c4b31872 | 1163 | |
a0baa7df BP |
1164 | ofconn->connmgr = ofservice->connmgr; |
1165 | ovs_list_push_back(&ofservice->connmgr->conns, &ofconn->connmgr_node); | |
777af88d | 1166 | |
fd4b7a0e BP |
1167 | hmap_init(&ofconn->assembler); |
1168 | ||
a0baa7df BP |
1169 | ofconn->ofservice = ofservice; |
1170 | ovs_list_push_back(&ofservice->conns, &ofconn->ofservice_node); | |
19a87e36 | 1171 | |
a0baa7df | 1172 | ofconn->rconn = rconn; |
c66be90b | 1173 | ofconn->type = settings->type; |
a0baa7df | 1174 | ofconn->band = settings->band; |
696d1bcf | 1175 | |
f4f1ea7e | 1176 | ofconn->role = OFPCR12_ROLE_EQUAL; |
eb12aa89 | 1177 | ofconn_set_protocol(ofconn, OFPUTIL_P_NONE); |
d8790c08 | 1178 | ofconn->packet_in_format = OFPUTIL_PACKET_IN_STD; |
c4b31872 | 1179 | |
3dabc687 | 1180 | ofconn->packet_in_queue_size = settings->max_pktq_size; |
c4b31872 | 1181 | ofconn->packet_in_counter = rconn_packet_counter_create(); |
c4b31872 BP |
1182 | ofconn->miss_send_len = (ofconn->type == OFCONN_PRIMARY |
1183 | ? OFP_DEFAULT_MISS_SEND_LEN | |
1184 | : 0); | |
a7349929 | 1185 | ofconn->controller_id = 0; |
c4b31872 | 1186 | |
c4b31872 | 1187 | ofconn->reply_counter = rconn_packet_counter_create(); |
80d5aefd | 1188 | |
a930d4c5 | 1189 | ofconn->async_cfg = NULL; |
2b07c8b1 | 1190 | |
696d1bcf BP |
1191 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; |
1192 | ofconn->first_op = ofconn->last_op = LLONG_MIN; | |
1193 | ofconn->next_op_report = LLONG_MAX; | |
1194 | ofconn->op_backoff = LLONG_MIN; | |
1195 | ||
a0baa7df | 1196 | hmap_init(&ofconn->monitors); |
2b07c8b1 | 1197 | ofconn->monitor_counter = rconn_packet_counter_create(); |
fd4b7a0e | 1198 | |
a0baa7df BP |
1199 | ovs_list_init(&ofconn->updates); |
1200 | ||
1201 | hmap_init(&ofconn->bundles); | |
1202 | ofconn->next_bundle_expiry_check = time_msec() + BUNDLE_EXPIRY_INTERVAL; | |
1203 | ||
1204 | ofconn_set_rate_limit(ofconn, settings->rate_limit, settings->burst_limit); | |
1205 | ||
1206 | ovs_mutex_unlock(&ofproto_mutex); | |
7ee20df1 BP |
1207 | } |
1208 | ||
19a87e36 BP |
1209 | static void |
1210 | ofconn_destroy(struct ofconn *ofconn) | |
3b0c6b56 | 1211 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 1212 | { |
a0baa7df BP |
1213 | if (!ofconn) { |
1214 | return; | |
1215 | } | |
1216 | ||
1217 | ofconn_log_flow_mods(ofconn); | |
1218 | ||
1219 | ovs_list_remove(&ofconn->connmgr_node); | |
1220 | ovs_list_remove(&ofconn->ofservice_node); | |
1221 | ||
1222 | if (ofconn->rconn != ofconn->ofservice->rconn) { | |
1223 | rconn_destroy(ofconn->rconn); | |
1224 | } | |
7ee20df1 | 1225 | |
b9320e51 JR |
1226 | /* Force clearing of want_packet_in_on_miss to keep the global count |
1227 | * accurate. */ | |
1228 | ofconn->controller_id = 1; | |
1229 | update_want_packet_in_on_miss(ofconn); | |
1230 | ||
a0baa7df BP |
1231 | rconn_packet_counter_destroy(ofconn->packet_in_counter); |
1232 | for (int i = 0; i < N_SCHEDULERS; i++) { | |
1233 | if (ofconn->schedulers[i]) { | |
1234 | pinsched_destroy(ofconn->schedulers[i]); | |
1235 | } | |
19a87e36 BP |
1236 | } |
1237 | ||
a0baa7df BP |
1238 | rconn_packet_counter_destroy(ofconn->reply_counter); |
1239 | ||
1240 | free(ofconn->async_cfg); | |
777af88d | 1241 | |
a0baa7df BP |
1242 | struct ofmonitor *monitor, *next_monitor; |
1243 | HMAP_FOR_EACH_SAFE (monitor, next_monitor, ofconn_node, | |
1244 | &ofconn->monitors) { | |
1245 | ofmonitor_destroy(monitor); | |
1246 | } | |
92bbc96a | 1247 | hmap_destroy(&ofconn->monitors); |
2b07c8b1 | 1248 | rconn_packet_counter_destroy(ofconn->monitor_counter); |
fd4b7a0e | 1249 | |
a0baa7df BP |
1250 | ofpbuf_list_delete(&ofconn->updates); /* ...but it should be empty. */ |
1251 | ||
1252 | bundle_remove_all(ofconn); | |
1253 | hmap_destroy(&ofconn->bundles); | |
fd4b7a0e | 1254 | |
19a87e36 BP |
1255 | free(ofconn); |
1256 | } | |
1257 | ||
a0baa7df | 1258 | /* Reconfigures 'ofconn' to match 'c'. */ |
19a87e36 BP |
1259 | static void |
1260 | ofconn_reconfigure(struct ofconn *ofconn, const struct ofproto_controller *c) | |
1261 | { | |
19a87e36 BP |
1262 | rconn_set_max_backoff(ofconn->rconn, c->max_backoff); |
1263 | ||
da0158d1 | 1264 | int probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0; |
19a87e36 BP |
1265 | rconn_set_probe_interval(ofconn->rconn, probe_interval); |
1266 | ||
a0baa7df | 1267 | ofconn->band = c->band; |
3dabc687 | 1268 | ofconn->packet_in_queue_size = c->max_pktq_size; |
a0baa7df | 1269 | |
19a87e36 | 1270 | ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit); |
0442efd9 | 1271 | |
0442efd9 MM |
1272 | if (c->dscp != rconn_get_dscp(ofconn->rconn)) { |
1273 | rconn_set_dscp(ofconn->rconn, c->dscp); | |
1274 | rconn_reconnect(ofconn->rconn); | |
1275 | } | |
19a87e36 BP |
1276 | } |
1277 | ||
7ee20df1 BP |
1278 | /* Returns true if it makes sense for 'ofconn' to receive and process OpenFlow |
1279 | * messages. */ | |
1280 | static bool | |
1281 | ofconn_may_recv(const struct ofconn *ofconn) | |
1282 | { | |
a3d1ff00 | 1283 | int count = rconn_packet_counter_n_packets(ofconn->reply_counter); |
b20f4073 | 1284 | return count < OFCONN_REPLY_MAX; |
7ee20df1 BP |
1285 | } |
1286 | ||
19a87e36 BP |
1287 | static void |
1288 | ofconn_run(struct ofconn *ofconn, | |
b20f4073 | 1289 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 1290 | const struct ovs_list *msgs)) |
19a87e36 BP |
1291 | { |
1292 | struct connmgr *mgr = ofconn->connmgr; | |
19a87e36 | 1293 | |
da0158d1 | 1294 | for (size_t i = 0; i < N_SCHEDULERS; i++) { |
ca6ba700 | 1295 | struct ovs_list txq; |
a6f75961 BP |
1296 | |
1297 | pinsched_run(ofconn->schedulers[i], &txq); | |
1298 | do_send_packet_ins(ofconn, &txq); | |
19a87e36 BP |
1299 | } |
1300 | ||
1301 | rconn_run(ofconn->rconn); | |
1302 | ||
b20f4073 | 1303 | /* Limit the number of iterations to avoid starving other tasks. */ |
da0158d1 | 1304 | for (int i = 0; i < 50 && ofconn_may_recv(ofconn); i++) { |
b20f4073 BP |
1305 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); |
1306 | if (!of_msg) { | |
1307 | break; | |
1308 | } | |
7ee20df1 | 1309 | |
b20f4073 BP |
1310 | if (mgr->fail_open) { |
1311 | fail_open_maybe_recover(mgr->fail_open); | |
19a87e36 | 1312 | } |
19a87e36 | 1313 | |
fd4b7a0e BP |
1314 | struct ovs_list msgs; |
1315 | enum ofperr error = ofpmp_assembler_execute(&ofconn->assembler, of_msg, | |
1316 | &msgs, time_msec()); | |
1317 | if (error) { | |
1318 | ofconn_send_error(ofconn, of_msg->data, error); | |
1319 | ofpbuf_delete(of_msg); | |
1320 | } else if (!ovs_list_is_empty(&msgs)) { | |
1321 | handle_openflow(ofconn, &msgs); | |
1322 | ofpbuf_list_delete(&msgs); | |
1323 | } | |
b20f4073 | 1324 | } |
696d1bcf | 1325 | |
51bb26fa JR |
1326 | long long int now = time_msec(); |
1327 | ||
1328 | if (now >= ofconn->next_bundle_expiry_check) { | |
1329 | ofconn->next_bundle_expiry_check = now + BUNDLE_EXPIRY_INTERVAL; | |
1330 | bundle_remove_expired(ofconn, now); | |
1331 | } | |
1332 | ||
1333 | if (now >= ofconn->next_op_report) { | |
696d1bcf BP |
1334 | ofconn_log_flow_mods(ofconn); |
1335 | } | |
1336 | ||
fd4b7a0e BP |
1337 | struct ofpbuf *error = ofpmp_assembler_run(&ofconn->assembler, |
1338 | time_msec()); | |
1339 | if (error) { | |
1340 | ofconn_send(ofconn, error, NULL); | |
1341 | } | |
1342 | ||
3b0c6b56 | 1343 | ovs_mutex_lock(&ofproto_mutex); |
a0baa7df BP |
1344 | if (rconn_is_reliable(ofconn->rconn) |
1345 | ? !rconn_is_connected(ofconn->rconn) | |
1346 | : !rconn_is_alive(ofconn->rconn)) { | |
19a87e36 BP |
1347 | ofconn_destroy(ofconn); |
1348 | } | |
3b0c6b56 | 1349 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
1350 | } |
1351 | ||
1352 | static void | |
b20f4073 | 1353 | ofconn_wait(struct ofconn *ofconn) |
19a87e36 | 1354 | { |
da0158d1 | 1355 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1356 | pinsched_wait(ofconn->schedulers[i]); |
1357 | } | |
1358 | rconn_run_wait(ofconn->rconn); | |
b20f4073 | 1359 | if (ofconn_may_recv(ofconn)) { |
19a87e36 | 1360 | rconn_recv_wait(ofconn->rconn); |
19a87e36 | 1361 | } |
696d1bcf BP |
1362 | if (ofconn->next_op_report != LLONG_MAX) { |
1363 | poll_timer_wait_until(ofconn->next_op_report); | |
1364 | } | |
fd4b7a0e | 1365 | poll_timer_wait_until(ofpmp_assembler_wait(&ofconn->assembler)); |
696d1bcf BP |
1366 | } |
1367 | ||
1368 | static void | |
1369 | ofconn_log_flow_mods(struct ofconn *ofconn) | |
1370 | { | |
1371 | int n_flow_mods = ofconn->n_add + ofconn->n_delete + ofconn->n_modify; | |
1372 | if (n_flow_mods) { | |
1373 | long long int ago = (time_msec() - ofconn->first_op) / 1000; | |
1374 | long long int interval = (ofconn->last_op - ofconn->first_op) / 1000; | |
1375 | struct ds s; | |
1376 | ||
1377 | ds_init(&s); | |
1378 | ds_put_format(&s, "%d flow_mods ", n_flow_mods); | |
1379 | if (interval == ago) { | |
1380 | ds_put_format(&s, "in the last %lld s", ago); | |
1381 | } else if (interval) { | |
1382 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1383 | interval, ago); | |
1384 | } else { | |
1385 | ds_put_format(&s, "%lld s ago", ago); | |
1386 | } | |
1387 | ||
1388 | ds_put_cstr(&s, " ("); | |
1389 | if (ofconn->n_add) { | |
1390 | ds_put_format(&s, "%d adds, ", ofconn->n_add); | |
1391 | } | |
1392 | if (ofconn->n_delete) { | |
1393 | ds_put_format(&s, "%d deletes, ", ofconn->n_delete); | |
1394 | } | |
1395 | if (ofconn->n_modify) { | |
1396 | ds_put_format(&s, "%d modifications, ", ofconn->n_modify); | |
1397 | } | |
1398 | s.length -= 2; | |
1399 | ds_put_char(&s, ')'); | |
1400 | ||
1401 | VLOG_INFO("%s: %s", rconn_get_name(ofconn->rconn), ds_cstr(&s)); | |
1402 | ds_destroy(&s); | |
1403 | ||
1404 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; | |
1405 | } | |
1406 | ofconn->next_op_report = LLONG_MAX; | |
19a87e36 BP |
1407 | } |
1408 | ||
80d5aefd BP |
1409 | /* Returns true if 'ofconn' should receive asynchronous messages of the given |
1410 | * OAM_* 'type' and 'reason', which should be a OFPR_* value for OAM_PACKET_IN, | |
1411 | * a OFPPR_* value for OAM_PORT_STATUS, or an OFPRR_* value for | |
1412 | * OAM_FLOW_REMOVED. Returns false if the message should not be sent on | |
1413 | * 'ofconn'. */ | |
19a87e36 | 1414 | static bool |
80d5aefd | 1415 | ofconn_receives_async_msg(const struct ofconn *ofconn, |
98090482 | 1416 | enum ofputil_async_msg_type type, |
80d5aefd | 1417 | unsigned int reason) |
19a87e36 | 1418 | { |
cb22974d BP |
1419 | ovs_assert(reason < 32); |
1420 | ovs_assert((unsigned int) type < OAM_N_TYPES); | |
19a87e36 | 1421 | |
30e699b7 | 1422 | if (!rconn_is_connected(ofconn->rconn) || !ofconn_get_protocol(ofconn)) { |
903f6c4f NS |
1423 | return false; |
1424 | } | |
1425 | ||
80d5aefd | 1426 | /* Keep the following code in sync with the documentation in the |
7c9afefd | 1427 | * "Asynchronous Messages" section in 'topics/design' */ |
80d5aefd BP |
1428 | |
1429 | if (ofconn->type == OFCONN_SERVICE && !ofconn->miss_send_len) { | |
1430 | /* Service connections don't get asynchronous messages unless they have | |
1431 | * explicitly asked for them by setting a nonzero miss send length. */ | |
f0fd1a17 | 1432 | return false; |
f0fd1a17 | 1433 | } |
80d5aefd | 1434 | |
a930d4c5 BP |
1435 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
1436 | uint32_t *masks = (ofconn->role == OFPCR12_ROLE_SLAVE | |
1437 | ? ac.slave | |
1438 | : ac.master); | |
1439 | return (masks[type] & (1u << reason)) != 0; | |
f0fd1a17 PS |
1440 | } |
1441 | ||
b9320e51 | 1442 | /* This function returns true to indicate that a packet_in message |
6b83a3c5 | 1443 | * for a "table-miss" should be sent to at least one controller. |
6b83a3c5 | 1444 | * |
b9320e51 | 1445 | * False otherwise. */ |
6b83a3c5 | 1446 | bool |
b9320e51 | 1447 | connmgr_wants_packet_in_on_miss(struct connmgr *mgr) |
6b83a3c5 | 1448 | { |
b9320e51 | 1449 | int count; |
3fc76ec0 | 1450 | |
b9320e51 JR |
1451 | atomic_read_relaxed(&mgr->want_packet_in_on_miss, &count); |
1452 | return count > 0; | |
6b83a3c5 SH |
1453 | } |
1454 | ||
19a87e36 BP |
1455 | /* Returns a human-readable name for an OpenFlow connection between 'mgr' and |
1456 | * 'target', suitable for use in log messages for identifying the connection. | |
1457 | * | |
1458 | * The name is dynamically allocated. The caller should free it (with free()) | |
1459 | * when it is no longer needed. */ | |
1460 | static char * | |
1461 | ofconn_make_name(const struct connmgr *mgr, const char *target) | |
1462 | { | |
1463 | return xasprintf("%s<->%s", mgr->name, target); | |
1464 | } | |
1465 | ||
1466 | static void | |
1467 | ofconn_set_rate_limit(struct ofconn *ofconn, int rate, int burst) | |
1468 | { | |
da0158d1 | 1469 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1470 | struct pinsched **s = &ofconn->schedulers[i]; |
1471 | ||
1472 | if (rate > 0) { | |
1473 | if (!*s) { | |
1474 | *s = pinsched_create(rate, burst); | |
1475 | } else { | |
1476 | pinsched_set_limits(*s, rate, burst); | |
1477 | } | |
1478 | } else { | |
1479 | pinsched_destroy(*s); | |
1480 | *s = NULL; | |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | static void | |
1486 | ofconn_send(const struct ofconn *ofconn, struct ofpbuf *msg, | |
1487 | struct rconn_packet_counter *counter) | |
1488 | { | |
982697a4 | 1489 | ofpmsg_update_length(msg); |
acb9da40 | 1490 | rconn_send(ofconn->rconn, msg, counter); |
19a87e36 BP |
1491 | } |
1492 | \f | |
1493 | /* Sending asynchronous messages. */ | |
1494 | ||
042b8f42 | 1495 | /* Sends an OFPT_PORT_STATUS message with 'new_pp' and 'reason' to appropriate |
2a6f78e0 BP |
1496 | * controllers managed by 'mgr'. For messages caused by a controller |
1497 | * OFPT_PORT_MOD, specify 'source' as the controller connection that sent the | |
042b8f42 BP |
1498 | * request; otherwise, specify 'source' as NULL. |
1499 | * | |
1500 | * If 'reason' is OFPPR_MODIFY and 'old_pp' is nonnull, then messages are | |
1501 | * suppressed in the case where the change would not be visible to a particular | |
1502 | * controller. For example, OpenFlow 1.0 does not have the OFPPS_LIVE flag, so | |
1503 | * this would suppress a change solely to that flag from being sent to an | |
1504 | * OpenFlow 1.0 controller. */ | |
19a87e36 | 1505 | void |
2a6f78e0 | 1506 | connmgr_send_port_status(struct connmgr *mgr, struct ofconn *source, |
042b8f42 BP |
1507 | const struct ofputil_phy_port *old_pp, |
1508 | const struct ofputil_phy_port *new_pp, | |
1509 | uint8_t reason) | |
19a87e36 BP |
1510 | { |
1511 | /* XXX Should limit the number of queued port status change messages. */ | |
042b8f42 | 1512 | struct ofputil_port_status new_ps = { reason, *new_pp }; |
19a87e36 | 1513 | |
042b8f42 | 1514 | struct ofconn *ofconn; |
a0baa7df | 1515 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
80d5aefd | 1516 | if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) { |
2a6f78e0 BP |
1517 | /* Before 1.5, OpenFlow specified that OFPT_PORT_MOD should not |
1518 | * generate OFPT_PORT_STATUS messages. That requirement was a | |
1519 | * relic of how OpenFlow originally supported a single controller, | |
1520 | * so that one could expect the controller to already know the | |
1521 | * changes it had made. | |
1522 | * | |
1523 | * EXT-338 changes OpenFlow 1.5 OFPT_PORT_MOD to send | |
1524 | * OFPT_PORT_STATUS messages to every controller. This is | |
1525 | * obviously more useful in the multi-controller case. We could | |
1526 | * always implement it that way in OVS, but that would risk | |
1527 | * confusing controllers that are intended for single-controller | |
1528 | * use only. (Imagine a controller that generates an OFPT_PORT_MOD | |
1529 | * in response to any OFPT_PORT_STATUS!) | |
1530 | * | |
1531 | * So this compromises: for OpenFlow 1.4 and earlier, it generates | |
1532 | * OFPT_PORT_STATUS for OFPT_PORT_MOD, but not back to the | |
1533 | * originating controller. In a single-controller environment, in | |
1534 | * particular, this means that it will never generate | |
1535 | * OFPT_PORT_STATUS for OFPT_PORT_MOD at all. */ | |
1536 | if (ofconn == source | |
1537 | && rconn_get_version(ofconn->rconn) < OFP15_VERSION) { | |
1538 | continue; | |
1539 | } | |
1540 | ||
042b8f42 BP |
1541 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1542 | struct ofpbuf *msg = ofputil_encode_port_status(&new_ps, protocol); | |
1543 | if (reason == OFPPR_MODIFY && old_pp) { | |
1544 | struct ofputil_port_status old_ps = { reason, *old_pp }; | |
1545 | struct ofpbuf *old_msg = ofputil_encode_port_status(&old_ps, | |
1546 | protocol); | |
1547 | bool suppress = ofpbuf_equal(msg, old_msg); | |
1548 | ofpbuf_delete(old_msg); | |
1549 | ||
1550 | if (suppress) { | |
1551 | ofpbuf_delete(msg); | |
1552 | continue; | |
1553 | } | |
1554 | } | |
1555 | ||
9e1fd49b | 1556 | ofconn_send(ofconn, msg, NULL); |
19a87e36 | 1557 | } |
19a87e36 BP |
1558 | } |
1559 | } | |
1560 | ||
3c35db62 NR |
1561 | /* Sends an OFPT_REQUESTFORWARD message with 'request' and 'reason' to |
1562 | * appropriate controllers managed by 'mgr'. For messages caused by a | |
1563 | * controller OFPT_GROUP_MOD and OFPT_METER_MOD, specify 'source' as the | |
1564 | * controller connection that sent the request; otherwise, specify 'source' | |
1565 | * as NULL. */ | |
1566 | void | |
1567 | connmgr_send_requestforward(struct connmgr *mgr, const struct ofconn *source, | |
1568 | const struct ofputil_requestforward *rf) | |
1569 | { | |
1570 | struct ofconn *ofconn; | |
1571 | ||
a0baa7df | 1572 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
98a9272b ZW |
1573 | /* METER_MOD only supported in OF13 and up. */ |
1574 | if (rf->reason == OFPRFR_METER_MOD | |
1575 | && rconn_get_version(ofconn->rconn) < OFP13_VERSION) { | |
1576 | continue; | |
1577 | } | |
1578 | ||
3c35db62 | 1579 | if (ofconn_receives_async_msg(ofconn, OAM_REQUESTFORWARD, rf->reason) |
3c35db62 NR |
1580 | && ofconn != source) { |
1581 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); | |
1582 | ofconn_send(ofconn, ofputil_encode_requestforward(rf, protocol), | |
1583 | NULL); | |
1584 | } | |
1585 | } | |
1586 | } | |
1587 | ||
19a87e36 | 1588 | /* Sends an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message based on 'fr' to |
25010c68 JR |
1589 | * appropriate controllers managed by 'mgr'. |
1590 | * | |
1591 | * This may be called from the RCU thread. */ | |
19a87e36 BP |
1592 | void |
1593 | connmgr_send_flow_removed(struct connmgr *mgr, | |
1594 | const struct ofputil_flow_removed *fr) | |
25010c68 | 1595 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 BP |
1596 | { |
1597 | struct ofconn *ofconn; | |
1598 | ||
a0baa7df | 1599 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
80d5aefd | 1600 | if (ofconn_receives_async_msg(ofconn, OAM_FLOW_REMOVED, fr->reason)) { |
80d5aefd BP |
1601 | /* Account flow expirations as replies to OpenFlow requests. That |
1602 | * works because preventing OpenFlow requests from being processed | |
1603 | * also prevents new flows from being added (and expiring). (It | |
1604 | * also prevents processing OpenFlow requests that would not add | |
1605 | * new flows, so it is imperfect.) */ | |
da0158d1 BP |
1606 | struct ofpbuf *msg = ofputil_encode_flow_removed( |
1607 | fr, ofconn_get_protocol(ofconn)); | |
80d5aefd | 1608 | ofconn_send_reply(ofconn, msg); |
19a87e36 | 1609 | } |
6c6eedc5 SJ |
1610 | } |
1611 | } | |
1612 | ||
1613 | /* Sends an OFPT_TABLE_STATUS message with 'reason' to appropriate controllers | |
1614 | * managed by 'mgr'. When the table state changes, the controller needs to be | |
1615 | * informed with the OFPT_TABLE_STATUS message. The reason values | |
1616 | * OFPTR_VACANCY_DOWN and OFPTR_VACANCY_UP identify a vacancy message. The | |
1617 | * vacancy events are generated when the remaining space in the flow table | |
1618 | * changes and crosses one of the vacancy thereshold specified by | |
1619 | * OFPT_TABLE_MOD. */ | |
1620 | void | |
1621 | connmgr_send_table_status(struct connmgr *mgr, | |
1622 | const struct ofputil_table_desc *td, | |
1623 | uint8_t reason) | |
1624 | { | |
da0158d1 BP |
1625 | struct ofputil_table_status ts = { |
1626 | .reason = reason, | |
1627 | .desc = *td | |
1628 | }; | |
6c6eedc5 | 1629 | |
da0158d1 | 1630 | struct ofconn *ofconn; |
a0baa7df | 1631 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
6c6eedc5 SJ |
1632 | if (ofconn_receives_async_msg(ofconn, OAM_TABLE_STATUS, reason)) { |
1633 | struct ofpbuf *msg; | |
1634 | ||
1635 | msg = ofputil_encode_table_status(&ts, | |
1636 | ofconn_get_protocol(ofconn)); | |
1637 | if (msg) { | |
1638 | ofconn_send(ofconn, msg, NULL); | |
1639 | } | |
1640 | } | |
19a87e36 BP |
1641 | } |
1642 | } | |
1643 | ||
78bd1cd0 | 1644 | /* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as |
77ab5fd2 | 1645 | * necessary according to their individual configurations. */ |
19a87e36 | 1646 | void |
a2b53dec BP |
1647 | connmgr_send_async_msg(struct connmgr *mgr, |
1648 | const struct ofproto_async_msg *am) | |
19a87e36 | 1649 | { |
29ebe880 | 1650 | struct ofconn *ofconn; |
19a87e36 | 1651 | |
a0baa7df | 1652 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
9bfe9334 BP |
1653 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1654 | if (protocol == OFPUTIL_P_NONE || !rconn_is_connected(ofconn->rconn) | |
a2b53dec BP |
1655 | || ofconn->controller_id != am->controller_id |
1656 | || !ofconn_receives_async_msg(ofconn, am->oam, | |
4d617a87 | 1657 | am->pin.up.base.reason)) { |
9bfe9334 | 1658 | continue; |
19a87e36 | 1659 | } |
9bfe9334 | 1660 | |
77ab5fd2 | 1661 | struct ofpbuf *msg = ofputil_encode_packet_in_private( |
c184807c | 1662 | &am->pin.up, protocol, ofconn->packet_in_format); |
9bfe9334 BP |
1663 | |
1664 | struct ovs_list txq; | |
4d617a87 BP |
1665 | bool is_miss = (am->pin.up.base.reason == OFPR_NO_MATCH || |
1666 | am->pin.up.base.reason == OFPR_EXPLICIT_MISS || | |
1667 | am->pin.up.base.reason == OFPR_IMPLICIT_MISS); | |
9bfe9334 | 1668 | pinsched_send(ofconn->schedulers[is_miss], |
4d617a87 | 1669 | am->pin.up.base.flow_metadata.flow.in_port.ofp_port, |
a2b53dec | 1670 | msg, &txq); |
9bfe9334 | 1671 | do_send_packet_ins(ofconn, &txq); |
19a87e36 | 1672 | } |
19a87e36 BP |
1673 | } |
1674 | ||
19a87e36 | 1675 | static void |
ca6ba700 | 1676 | do_send_packet_ins(struct ofconn *ofconn, struct ovs_list *txq) |
19a87e36 | 1677 | { |
5f03c983 | 1678 | struct ofpbuf *pin; |
19a87e36 | 1679 | |
5f03c983 | 1680 | LIST_FOR_EACH_POP (pin, list_node, txq) { |
e95f1d01 | 1681 | if (rconn_send_with_limit(ofconn->rconn, pin, |
3dabc687 DC |
1682 | ofconn->packet_in_counter, |
1683 | ofconn->packet_in_queue_size) == EAGAIN) { | |
7ed58d4a | 1684 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(5, 5); |
e95f1d01 | 1685 | |
7ed58d4a | 1686 | VLOG_INFO_RL(&rll, "%s: dropping packet-in due to queue overflow", |
e95f1d01 BP |
1687 | rconn_get_name(ofconn->rconn)); |
1688 | } | |
a6f75961 | 1689 | } |
19a87e36 | 1690 | } |
19a87e36 BP |
1691 | \f |
1692 | /* Fail-open settings. */ | |
1693 | ||
1694 | /* Returns the failure handling mode (OFPROTO_FAIL_SECURE or | |
1695 | * OFPROTO_FAIL_STANDALONE) for 'mgr'. */ | |
1696 | enum ofproto_fail_mode | |
1697 | connmgr_get_fail_mode(const struct connmgr *mgr) | |
1698 | { | |
1699 | return mgr->fail_mode; | |
1700 | } | |
1701 | ||
1702 | /* Sets the failure handling mode for 'mgr' to 'fail_mode' (either | |
1703 | * OFPROTO_FAIL_SECURE or OFPROTO_FAIL_STANDALONE). */ | |
1704 | void | |
1705 | connmgr_set_fail_mode(struct connmgr *mgr, enum ofproto_fail_mode fail_mode) | |
1706 | { | |
08fd19f0 BP |
1707 | if (mgr->fail_mode != fail_mode) { |
1708 | mgr->fail_mode = fail_mode; | |
1709 | update_fail_open(mgr); | |
1710 | if (!connmgr_has_controllers(mgr)) { | |
1711 | ofproto_flush_flows(mgr->ofproto); | |
1712 | } | |
1713 | } | |
19a87e36 BP |
1714 | } |
1715 | \f | |
1716 | /* Fail-open implementation. */ | |
1717 | ||
1718 | /* Returns the longest probe interval among the primary controllers configured | |
1719 | * on 'mgr'. Returns 0 if there are no primary controllers. */ | |
1720 | int | |
1721 | connmgr_get_max_probe_interval(const struct connmgr *mgr) | |
1722 | { | |
da0158d1 | 1723 | int max_probe_interval = 0; |
19a87e36 | 1724 | |
a0baa7df BP |
1725 | struct ofservice *ofservice; |
1726 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
1727 | if (ofservice->type == OFCONN_PRIMARY) { | |
1728 | int probe_interval = ofservice->s.probe_interval; | |
1729 | max_probe_interval = MAX(max_probe_interval, probe_interval); | |
1730 | } | |
19a87e36 BP |
1731 | } |
1732 | return max_probe_interval; | |
1733 | } | |
1734 | ||
c66be90b BP |
1735 | /* Returns the number of seconds for which all of 'mgr's active, primary |
1736 | * controllers have been disconnected. Returns 0 if 'mgr' has no active, | |
1737 | * primary controllers. */ | |
19a87e36 BP |
1738 | int |
1739 | connmgr_failure_duration(const struct connmgr *mgr) | |
1740 | { | |
da0158d1 BP |
1741 | int min_failure_duration = INT_MAX; |
1742 | ||
a0baa7df BP |
1743 | struct ofservice *ofservice; |
1744 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
c66be90b | 1745 | if (ofservice->s.type == OFCONN_PRIMARY && ofservice->rconn) { |
a0baa7df BP |
1746 | int failure_duration = rconn_failure_duration(ofservice->rconn); |
1747 | min_failure_duration = MIN(min_failure_duration, failure_duration); | |
1748 | } | |
19a87e36 | 1749 | } |
a0baa7df BP |
1750 | |
1751 | return min_failure_duration != INT_MAX ? min_failure_duration : 0; | |
19a87e36 BP |
1752 | } |
1753 | ||
1754 | /* Returns true if at least one primary controller is connected (regardless of | |
1755 | * whether those controllers are believed to have authenticated and accepted | |
1756 | * this switch), false if none of them are connected. */ | |
1757 | bool | |
1758 | connmgr_is_any_controller_connected(const struct connmgr *mgr) | |
1759 | { | |
a0baa7df BP |
1760 | struct ofservice *ofservice; |
1761 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
c66be90b BP |
1762 | if (ofservice->s.type == OFCONN_PRIMARY |
1763 | && !ovs_list_is_empty(&ofservice->conns)) { | |
19a87e36 BP |
1764 | return true; |
1765 | } | |
1766 | } | |
1767 | return false; | |
1768 | } | |
1769 | ||
1770 | /* Returns true if at least one primary controller is believed to have | |
1771 | * authenticated and accepted this switch, false otherwise. */ | |
1772 | bool | |
1773 | connmgr_is_any_controller_admitted(const struct connmgr *mgr) | |
1774 | { | |
1775 | const struct ofconn *ofconn; | |
1776 | ||
a0baa7df BP |
1777 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
1778 | if (ofconn->type == OFCONN_PRIMARY | |
1779 | && rconn_is_admitted(ofconn->rconn)) { | |
19a87e36 BP |
1780 | return true; |
1781 | } | |
1782 | } | |
1783 | return false; | |
1784 | } | |
19a87e36 BP |
1785 | \f |
1786 | /* In-band configuration. */ | |
1787 | ||
1788 | static bool any_extras_changed(const struct connmgr *, | |
1789 | const struct sockaddr_in *extras, size_t n); | |
1790 | ||
1791 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'mgr''s | |
1792 | * in-band control should guarantee access, in the same way that in-band | |
1793 | * control guarantees access to OpenFlow controllers. */ | |
1794 | void | |
1795 | connmgr_set_extra_in_band_remotes(struct connmgr *mgr, | |
1796 | const struct sockaddr_in *extras, size_t n) | |
1797 | { | |
1798 | if (!any_extras_changed(mgr, extras, n)) { | |
1799 | return; | |
1800 | } | |
1801 | ||
1802 | free(mgr->extra_in_band_remotes); | |
1803 | mgr->n_extra_remotes = n; | |
1804 | mgr->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras); | |
1805 | ||
1806 | update_in_band_remotes(mgr); | |
1807 | } | |
1808 | ||
1809 | /* Sets the OpenFlow queue used by flows set up by in-band control on | |
1810 | * 'mgr' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
1811 | * flows will use the default queue. */ | |
1812 | void | |
1813 | connmgr_set_in_band_queue(struct connmgr *mgr, int queue_id) | |
1814 | { | |
1815 | if (queue_id != mgr->in_band_queue) { | |
1816 | mgr->in_band_queue = queue_id; | |
1817 | update_in_band_remotes(mgr); | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | static bool | |
1822 | any_extras_changed(const struct connmgr *mgr, | |
1823 | const struct sockaddr_in *extras, size_t n) | |
1824 | { | |
19a87e36 BP |
1825 | if (n != mgr->n_extra_remotes) { |
1826 | return true; | |
1827 | } | |
1828 | ||
da0158d1 | 1829 | for (size_t i = 0; i < n; i++) { |
19a87e36 BP |
1830 | const struct sockaddr_in *old = &mgr->extra_in_band_remotes[i]; |
1831 | const struct sockaddr_in *new = &extras[i]; | |
1832 | ||
1833 | if (old->sin_addr.s_addr != new->sin_addr.s_addr || | |
1834 | old->sin_port != new->sin_port) { | |
1835 | return true; | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | return false; | |
1840 | } | |
1841 | \f | |
1842 | /* In-band implementation. */ | |
1843 | ||
1844 | bool | |
f7f1ea29 | 1845 | connmgr_has_in_band(struct connmgr *mgr) |
19a87e36 | 1846 | { |
f7f1ea29 | 1847 | return mgr->in_band != NULL; |
19a87e36 BP |
1848 | } |
1849 | \f | |
1850 | /* Fail-open and in-band implementation. */ | |
1851 | ||
1852 | /* Called by 'ofproto' after all flows have been flushed, to allow fail-open | |
7ee20df1 BP |
1853 | * and standalone mode to re-create their flows. |
1854 | * | |
1855 | * In-band control has more sophisticated code that manages flows itself. */ | |
19a87e36 BP |
1856 | void |
1857 | connmgr_flushed(struct connmgr *mgr) | |
15aaf599 | 1858 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 1859 | { |
19a87e36 BP |
1860 | if (mgr->fail_open) { |
1861 | fail_open_flushed(mgr->fail_open); | |
1862 | } | |
08fd19f0 BP |
1863 | |
1864 | /* If there are no controllers and we're in standalone mode, set up a flow | |
1865 | * that matches every packet and directs them to OFPP_NORMAL (which goes to | |
1866 | * us). Otherwise, the switch is in secure mode and we won't pass any | |
1867 | * traffic until a controller has been defined and it tells us to do so. */ | |
1868 | if (!connmgr_has_controllers(mgr) | |
1869 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
f25d0cf3 | 1870 | struct ofpbuf ofpacts; |
81a76618 | 1871 | struct match match; |
08fd19f0 | 1872 | |
024d93f6 | 1873 | ofpbuf_init(&ofpacts, sizeof(struct ofpact_output)); |
f25d0cf3 | 1874 | ofpact_put_OUTPUT(&ofpacts)->port = OFPP_NORMAL; |
f25d0cf3 | 1875 | |
81a76618 | 1876 | match_init_catchall(&match); |
6fd6ed71 PS |
1877 | ofproto_add_flow(mgr->ofproto, &match, 0, ofpacts.data, |
1878 | ofpacts.size); | |
f25d0cf3 BP |
1879 | |
1880 | ofpbuf_uninit(&ofpacts); | |
08fd19f0 | 1881 | } |
19a87e36 | 1882 | } |
3fbbcba7 BP |
1883 | |
1884 | /* Returns the number of hidden rules created by the in-band and fail-open | |
1885 | * implementations in table 0. (Subtracting this count from the number of | |
d79e3d70 | 1886 | * rules in the table 0 classifier, as maintained in struct oftable, yields |
3fbbcba7 BP |
1887 | * the number of flows that OVS should report via OpenFlow for table 0.) */ |
1888 | int | |
1889 | connmgr_count_hidden_rules(const struct connmgr *mgr) | |
1890 | { | |
1891 | int n_hidden = 0; | |
1892 | if (mgr->in_band) { | |
1893 | n_hidden += in_band_count_rules(mgr->in_band); | |
1894 | } | |
1895 | if (mgr->fail_open) { | |
1896 | n_hidden += fail_open_count_rules(mgr->fail_open); | |
1897 | } | |
1898 | return n_hidden; | |
1899 | } | |
19a87e36 BP |
1900 | \f |
1901 | /* Creates a new ofservice for 'target' in 'mgr'. Returns 0 if successful, | |
1902 | * otherwise a positive errno value. | |
1903 | * | |
1904 | * ofservice_reconfigure() must be called to fully configure the new | |
1905 | * ofservice. */ | |
a0baa7df | 1906 | static void |
00401ef0 | 1907 | ofservice_create(struct connmgr *mgr, const char *target, |
a0baa7df BP |
1908 | const struct ofproto_controller *c) |
1909 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 1910 | { |
a0baa7df BP |
1911 | struct pvconn *pvconn = NULL; |
1912 | struct rconn *rconn = NULL; | |
1913 | if (!vconn_verify_name(target)) { | |
1914 | char *name = ofconn_make_name(mgr, target); | |
1915 | rconn = rconn_create(5, 8, c->dscp, c->allowed_versions); | |
1916 | rconn_connect(rconn, target, name); | |
1917 | free(name); | |
1918 | } else if (!pvconn_verify_name(target)) { | |
1919 | int error = pvconn_open(target, c->allowed_versions, c->dscp, &pvconn); | |
1920 | if (error) { | |
1921 | return; | |
1922 | } | |
1923 | } else { | |
1924 | VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"", | |
1925 | mgr->name, target); | |
1926 | return; | |
19a87e36 BP |
1927 | } |
1928 | ||
da0158d1 | 1929 | struct ofservice *ofservice = xzalloc(sizeof *ofservice); |
a0baa7df BP |
1930 | hmap_insert(&mgr->services, &ofservice->hmap_node, hash_string(target, 0)); |
1931 | ofservice->connmgr = mgr; | |
1932 | ofservice->target = xstrdup(target); | |
1933 | ovs_list_init(&ofservice->conns); | |
c66be90b | 1934 | ofservice->type = c->type; |
a0baa7df | 1935 | ofservice->rconn = rconn; |
19a87e36 | 1936 | ofservice->pvconn = pvconn; |
a0baa7df BP |
1937 | ofservice->s = *c; |
1938 | ofservice_reconfigure(ofservice, c); | |
19a87e36 | 1939 | |
a0baa7df BP |
1940 | VLOG_INFO("%s: added %s controller \"%s\"", |
1941 | mgr->name, ofconn_type_to_string(ofservice->type), target); | |
19a87e36 BP |
1942 | } |
1943 | ||
1944 | static void | |
a0baa7df BP |
1945 | ofservice_close_all(struct ofservice *ofservice) |
1946 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 1947 | { |
a0baa7df BP |
1948 | struct ofconn *ofconn, *next; |
1949 | LIST_FOR_EACH_SAFE (ofconn, next, ofservice_node, &ofservice->conns) { | |
1950 | ofconn_destroy(ofconn); | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | static void | |
1955 | ofservice_destroy(struct ofservice *ofservice) | |
1956 | OVS_REQUIRES(ofproto_mutex) | |
1957 | { | |
1958 | if (!ofservice) { | |
1959 | return; | |
1960 | } | |
1961 | ||
1962 | ofservice_close_all(ofservice); | |
1963 | ||
1964 | hmap_remove(&ofservice->connmgr->services, &ofservice->hmap_node); | |
1965 | free(ofservice->target); | |
1966 | if (ofservice->pvconn) { | |
1967 | pvconn_close(ofservice->pvconn); | |
1968 | } | |
1969 | if (ofservice->rconn) { | |
1970 | rconn_destroy(ofservice->rconn); | |
1971 | } | |
19a87e36 BP |
1972 | free(ofservice); |
1973 | } | |
1974 | ||
a0baa7df BP |
1975 | static void |
1976 | ofservice_run(struct ofservice *ofservice) | |
1977 | { | |
1978 | if (ofservice->pvconn) { | |
1979 | struct vconn *vconn; | |
1980 | int retval = pvconn_accept(ofservice->pvconn, &vconn); | |
1981 | if (!retval) { | |
1982 | /* Passing default value for creation of the rconn */ | |
1983 | struct rconn *rconn = rconn_create( | |
1984 | ofservice->s.probe_interval, ofservice->s.max_backoff, | |
1985 | ofservice->s.dscp, ofservice->s.allowed_versions); | |
1986 | char *name = ofconn_make_name(ofservice->connmgr, | |
1987 | vconn_get_name(vconn)); | |
1988 | rconn_connect_unreliably(rconn, vconn, name); | |
1989 | free(name); | |
1990 | ||
c66be90b | 1991 | ofconn_create(ofservice, rconn, &ofservice->s); |
a0baa7df BP |
1992 | } else if (retval != EAGAIN) { |
1993 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); | |
1994 | } | |
1995 | } else { | |
1996 | rconn_run(ofservice->rconn); | |
1997 | ||
1998 | bool connected = rconn_is_connected(ofservice->rconn); | |
1999 | bool has_ofconn = !ovs_list_is_empty(&ofservice->conns); | |
2000 | if (connected && !has_ofconn) { | |
c66be90b | 2001 | ofconn_create(ofservice, ofservice->rconn, &ofservice->s); |
a0baa7df BP |
2002 | } |
2003 | } | |
2004 | } | |
2005 | ||
2006 | static void | |
2007 | ofservice_wait(struct ofservice *ofservice) | |
2008 | { | |
2009 | if (ofservice->pvconn) { | |
2010 | pvconn_wait(ofservice->pvconn); | |
2011 | } | |
2012 | } | |
2013 | ||
19a87e36 BP |
2014 | static void |
2015 | ofservice_reconfigure(struct ofservice *ofservice, | |
a0baa7df BP |
2016 | const struct ofproto_controller *settings) |
2017 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 2018 | { |
a0baa7df BP |
2019 | /* If the allowed OpenFlow versions change, close all of the existing |
2020 | * connections to allow them to reconnect and possibly negotiate a new | |
2021 | * version. */ | |
2022 | if (ofservice->s.allowed_versions != settings->allowed_versions) { | |
2023 | ofservice_close_all(ofservice); | |
2024 | } | |
2025 | ||
2026 | ofservice->s = *settings; | |
2027 | ||
2028 | struct ofconn *ofconn; | |
2029 | LIST_FOR_EACH (ofconn, ofservice_node, &ofservice->conns) { | |
2030 | ofconn_reconfigure(ofconn, settings); | |
2031 | } | |
19a87e36 BP |
2032 | } |
2033 | ||
2034 | /* Finds and returns the ofservice within 'mgr' that has the given | |
2035 | * 'target', or a null pointer if none exists. */ | |
2036 | static struct ofservice * | |
2037 | ofservice_lookup(struct connmgr *mgr, const char *target) | |
2038 | { | |
2039 | struct ofservice *ofservice; | |
2040 | ||
a0baa7df | 2041 | HMAP_FOR_EACH_WITH_HASH (ofservice, hmap_node, hash_string(target, 0), |
19a87e36 | 2042 | &mgr->services) { |
a0baa7df | 2043 | if (!strcmp(ofservice->target, target)) { |
19a87e36 BP |
2044 | return ofservice; |
2045 | } | |
2046 | } | |
2047 | return NULL; | |
2048 | } | |
2b07c8b1 BP |
2049 | \f |
2050 | /* Flow monitors (NXST_FLOW_MONITOR). */ | |
2051 | ||
2052 | /* A counter incremented when something significant happens to an OpenFlow | |
2053 | * rule. | |
2054 | * | |
2055 | * - When a rule is added, its 'add_seqno' and 'modify_seqno' are set to | |
2056 | * the current value (which is then incremented). | |
2057 | * | |
2058 | * - When a rule is modified, its 'modify_seqno' is set to the current | |
2059 | * value (which is then incremented). | |
2060 | * | |
2061 | * Thus, by comparing an old value of monitor_seqno against a rule's | |
2062 | * 'add_seqno', one can tell whether the rule was added before or after the old | |
2063 | * value was read, and similarly for 'modify_seqno'. | |
2064 | * | |
2065 | * 32 bits should normally be sufficient (and would be nice, to save space in | |
2066 | * each rule) but then we'd have to have some special cases for wraparound. | |
2067 | * | |
2068 | * We initialize monitor_seqno to 1 to allow 0 to be used as an invalid | |
2069 | * value. */ | |
2070 | static uint64_t monitor_seqno = 1; | |
2071 | ||
2072 | COVERAGE_DEFINE(ofmonitor_pause); | |
2073 | COVERAGE_DEFINE(ofmonitor_resume); | |
2074 | ||
2075 | enum ofperr | |
2076 | ofmonitor_create(const struct ofputil_flow_monitor_request *request, | |
2077 | struct ofconn *ofconn, struct ofmonitor **monitorp) | |
4cd1bc9d | 2078 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2079 | { |
2b07c8b1 BP |
2080 | *monitorp = NULL; |
2081 | ||
da0158d1 | 2082 | struct ofmonitor *m = ofmonitor_lookup(ofconn, request->id); |
2b07c8b1 | 2083 | if (m) { |
04f9f286 | 2084 | return OFPERR_OFPMOFC_MONITOR_EXISTS; |
2b07c8b1 BP |
2085 | } |
2086 | ||
2087 | m = xmalloc(sizeof *m); | |
2088 | m->ofconn = ofconn; | |
2089 | hmap_insert(&ofconn->monitors, &m->ofconn_node, hash_int(request->id, 0)); | |
2090 | m->id = request->id; | |
2091 | m->flags = request->flags; | |
2092 | m->out_port = request->out_port; | |
2093 | m->table_id = request->table_id; | |
5cb7a798 | 2094 | minimatch_init(&m->match, &request->match); |
2b07c8b1 BP |
2095 | |
2096 | *monitorp = m; | |
2097 | return 0; | |
2098 | } | |
2099 | ||
2100 | struct ofmonitor * | |
2101 | ofmonitor_lookup(struct ofconn *ofconn, uint32_t id) | |
4cd1bc9d | 2102 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2103 | { |
2104 | struct ofmonitor *m; | |
2105 | ||
2106 | HMAP_FOR_EACH_IN_BUCKET (m, ofconn_node, hash_int(id, 0), | |
2107 | &ofconn->monitors) { | |
2108 | if (m->id == id) { | |
2109 | return m; | |
2110 | } | |
2111 | } | |
2112 | return NULL; | |
2113 | } | |
2114 | ||
2115 | void | |
2116 | ofmonitor_destroy(struct ofmonitor *m) | |
4cd1bc9d | 2117 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2118 | { |
2119 | if (m) { | |
5684eb74 | 2120 | minimatch_destroy(&m->match); |
2b07c8b1 BP |
2121 | hmap_remove(&m->ofconn->monitors, &m->ofconn_node); |
2122 | free(m); | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | void | |
2127 | ofmonitor_report(struct connmgr *mgr, struct rule *rule, | |
2128 | enum nx_flow_update_event event, | |
2129 | enum ofp_flow_removed_reason reason, | |
cdbdeeda SH |
2130 | const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid, |
2131 | const struct rule_actions *old_actions) | |
15aaf599 | 2132 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2133 | { |
834fe5cb BP |
2134 | if (rule_is_hidden(rule)) { |
2135 | return; | |
2136 | } | |
2137 | ||
da0158d1 | 2138 | enum nx_flow_monitor_flags update; |
2b07c8b1 BP |
2139 | switch (event) { |
2140 | case NXFME_ADDED: | |
2141 | update = NXFMF_ADD; | |
2142 | rule->add_seqno = rule->modify_seqno = monitor_seqno++; | |
2143 | break; | |
2144 | ||
2145 | case NXFME_DELETED: | |
2146 | update = NXFMF_DELETE; | |
2147 | break; | |
2148 | ||
2149 | case NXFME_MODIFIED: | |
2150 | update = NXFMF_MODIFY; | |
2151 | rule->modify_seqno = monitor_seqno++; | |
2152 | break; | |
2153 | ||
2154 | default: | |
2155 | case NXFME_ABBREV: | |
428b2edd | 2156 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2157 | } |
2158 | ||
da0158d1 | 2159 | struct ofconn *ofconn; |
a0baa7df | 2160 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
2b07c8b1 BP |
2161 | if (ofconn->monitor_paused) { |
2162 | /* Only send NXFME_DELETED notifications for flows that were added | |
2163 | * before we paused. */ | |
2164 | if (event != NXFME_DELETED | |
2165 | || rule->add_seqno > ofconn->monitor_paused) { | |
2166 | continue; | |
2167 | } | |
2168 | } | |
2169 | ||
da0158d1 BP |
2170 | enum nx_flow_monitor_flags flags = 0; |
2171 | struct ofmonitor *m; | |
2b07c8b1 BP |
2172 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2173 | if (m->flags & update | |
2174 | && (m->table_id == 0xff || m->table_id == rule->table_id) | |
cdbdeeda SH |
2175 | && (ofproto_rule_has_out_port(rule, m->out_port) |
2176 | || (old_actions | |
2177 | && ofpacts_output_to_port(old_actions->ofpacts, | |
2178 | old_actions->ofpacts_len, | |
2179 | m->out_port))) | |
2b07c8b1 BP |
2180 | && cls_rule_is_loose_match(&rule->cr, &m->match)) { |
2181 | flags |= m->flags; | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | if (flags) { | |
417e7e66 | 2186 | if (ovs_list_is_empty(&ofconn->updates)) { |
2b07c8b1 BP |
2187 | ofputil_start_flow_update(&ofconn->updates); |
2188 | ofconn->sent_abbrev_update = false; | |
2189 | } | |
2190 | ||
200d6ac4 SH |
2191 | if (flags & NXFMF_OWN || ofconn != abbrev_ofconn |
2192 | || ofconn->monitor_paused) { | |
2b07c8b1 BP |
2193 | struct ofputil_flow_update fu; |
2194 | ||
2195 | fu.event = event; | |
2196 | fu.reason = event == NXFME_DELETED ? reason : 0; | |
2b07c8b1 BP |
2197 | fu.table_id = rule->table_id; |
2198 | fu.cookie = rule->flow_cookie; | |
140f36ba | 2199 | minimatch_expand(&rule->cr.match, &fu.match); |
6b140a4e | 2200 | fu.priority = rule->cr.priority; |
a3779dbc | 2201 | |
d10976b7 | 2202 | ovs_mutex_lock(&rule->mutex); |
a3779dbc EJ |
2203 | fu.idle_timeout = rule->idle_timeout; |
2204 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 2205 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 2206 | |
2b07c8b1 | 2207 | if (flags & NXFMF_ACTIONS) { |
da0158d1 BP |
2208 | const struct rule_actions *actions |
2209 | = rule_get_actions(rule); | |
06a0f3e2 BP |
2210 | fu.ofpacts = actions->ofpacts; |
2211 | fu.ofpacts_len = actions->ofpacts_len; | |
2b07c8b1 BP |
2212 | } else { |
2213 | fu.ofpacts = NULL; | |
2214 | fu.ofpacts_len = 0; | |
2215 | } | |
140f36ba DDP |
2216 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2217 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2218 | } else if (!ofconn->sent_abbrev_update) { |
2219 | struct ofputil_flow_update fu; | |
2220 | ||
2221 | fu.event = NXFME_ABBREV; | |
2222 | fu.xid = abbrev_xid; | |
140f36ba DDP |
2223 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2224 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2225 | |
2226 | ofconn->sent_abbrev_update = true; | |
2227 | } | |
2228 | } | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | void | |
2233 | ofmonitor_flush(struct connmgr *mgr) | |
4cd1bc9d | 2234 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2235 | { |
2236 | struct ofconn *ofconn; | |
2237 | ||
a0baa7df | 2238 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
6d91e84c | 2239 | struct rconn_packet_counter *counter = ofconn->monitor_counter; |
2b07c8b1 | 2240 | |
6d91e84c | 2241 | struct ofpbuf *msg; |
5f03c983 | 2242 | LIST_FOR_EACH_POP (msg, list_node, &ofconn->updates) { |
6d91e84c BP |
2243 | ofconn_send(ofconn, msg, counter); |
2244 | } | |
2245 | ||
2246 | if (!ofconn->monitor_paused | |
2247 | && rconn_packet_counter_n_bytes(counter) > 128 * 1024) { | |
6d91e84c BP |
2248 | COVERAGE_INC(ofmonitor_pause); |
2249 | ofconn->monitor_paused = monitor_seqno++; | |
da0158d1 BP |
2250 | struct ofpbuf *pause = ofpraw_alloc_xid( |
2251 | OFPRAW_NXT_FLOW_MONITOR_PAUSED, OFP10_VERSION, htonl(0), 0); | |
6d91e84c | 2252 | ofconn_send(ofconn, pause, counter); |
2b07c8b1 BP |
2253 | } |
2254 | } | |
2255 | } | |
2256 | ||
2257 | static void | |
2258 | ofmonitor_resume(struct ofconn *ofconn) | |
4cd1bc9d | 2259 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2260 | { |
a8e547c1 | 2261 | struct rule_collection rules; |
a8e547c1 | 2262 | rule_collection_init(&rules); |
da0158d1 BP |
2263 | |
2264 | struct ofmonitor *m; | |
2b07c8b1 BP |
2265 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2266 | ofmonitor_collect_resume_rules(m, ofconn->monitor_paused, &rules); | |
2267 | } | |
2268 | ||
da0158d1 | 2269 | struct ovs_list msgs = OVS_LIST_INITIALIZER(&msgs); |
2b07c8b1 BP |
2270 | ofmonitor_compose_refresh_updates(&rules, &msgs); |
2271 | ||
da0158d1 BP |
2272 | struct ofpbuf *resumed = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_RESUMED, |
2273 | OFP10_VERSION, htonl(0), 0); | |
417e7e66 | 2274 | ovs_list_push_back(&msgs, &resumed->list_node); |
2b07c8b1 BP |
2275 | ofconn_send_replies(ofconn, &msgs); |
2276 | ||
2277 | ofconn->monitor_paused = 0; | |
2278 | } | |
2279 | ||
4cd1bc9d BP |
2280 | static bool |
2281 | ofmonitor_may_resume(const struct ofconn *ofconn) | |
2282 | OVS_REQUIRES(ofproto_mutex) | |
2283 | { | |
2284 | return (ofconn->monitor_paused != 0 | |
2285 | && !rconn_packet_counter_n_packets(ofconn->monitor_counter)); | |
2286 | } | |
2287 | ||
2b07c8b1 BP |
2288 | static void |
2289 | ofmonitor_run(struct connmgr *mgr) | |
2290 | { | |
4cd1bc9d | 2291 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2292 | struct ofconn *ofconn; |
a0baa7df | 2293 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
4cd1bc9d | 2294 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2295 | COVERAGE_INC(ofmonitor_resume); |
2296 | ofmonitor_resume(ofconn); | |
2297 | } | |
2298 | } | |
4cd1bc9d | 2299 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 BP |
2300 | } |
2301 | ||
2302 | static void | |
2303 | ofmonitor_wait(struct connmgr *mgr) | |
2304 | { | |
4cd1bc9d | 2305 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2306 | struct ofconn *ofconn; |
a0baa7df | 2307 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
4cd1bc9d | 2308 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2309 | poll_immediate_wake(); |
2310 | } | |
2311 | } | |
4cd1bc9d | 2312 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 2313 | } |
a2b53dec BP |
2314 | |
2315 | void | |
2316 | ofproto_async_msg_free(struct ofproto_async_msg *am) | |
2317 | { | |
4d617a87 BP |
2318 | free(am->pin.up.base.packet); |
2319 | free(am->pin.up.base.userdata); | |
77ab5fd2 BP |
2320 | free(am->pin.up.stack); |
2321 | free(am->pin.up.actions); | |
2322 | free(am->pin.up.action_set); | |
a2b53dec BP |
2323 | free(am); |
2324 | } |