]>
Commit | Line | Data |
---|---|---|
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 *); | |
9688b4c7 AC |
193 | static int ofservice_reconfigure(struct ofservice *, |
194 | const struct ofproto_controller *) | |
a0baa7df BP |
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 | 604 | } else { |
9688b4c7 AC |
605 | if (ofservice_reconfigure(ofservice, c)) { |
606 | char *target_to_restore = xstrdup(target); | |
607 | VLOG_INFO("%s: Changes to controller \"%s\" " | |
608 | "expects re-initialization: Re-initializing now.", | |
609 | mgr->name, target); | |
610 | ofservice_destroy(ofservice); | |
611 | ofservice_create(mgr, target_to_restore, c); | |
612 | free(target_to_restore); | |
613 | } | |
19a87e36 BP |
614 | } |
615 | } | |
616 | ||
c7be3f55 BP |
617 | ovs_mutex_unlock(&ofproto_mutex); |
618 | ||
19a87e36 BP |
619 | update_in_band_remotes(mgr); |
620 | update_fail_open(mgr); | |
08fd19f0 BP |
621 | if (had_controllers != connmgr_has_controllers(mgr)) { |
622 | ofproto_flush_flows(mgr->ofproto); | |
623 | } | |
19a87e36 BP |
624 | } |
625 | ||
626 | /* Drops the connections between 'mgr' and all of its primary and secondary | |
627 | * controllers, forcing them to reconnect. */ | |
628 | void | |
629 | connmgr_reconnect(const struct connmgr *mgr) | |
630 | { | |
631 | struct ofconn *ofconn; | |
632 | ||
a0baa7df | 633 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
19a87e36 BP |
634 | rconn_reconnect(ofconn->rconn); |
635 | } | |
636 | } | |
637 | ||
638 | /* Sets the "snoops" for 'mgr' to the pvconn targets listed in 'snoops'. | |
639 | * | |
640 | * A "snoop" is a pvconn to which every OpenFlow message to or from the most | |
641 | * important controller on 'mgr' is mirrored. */ | |
642 | int | |
81e2083f | 643 | connmgr_set_snoops(struct connmgr *mgr, const struct sset *snoops) |
19a87e36 BP |
644 | { |
645 | return set_pvconns(&mgr->snoops, &mgr->n_snoops, snoops); | |
646 | } | |
647 | ||
648 | /* Adds each of the snoops currently configured on 'mgr' to 'snoops'. */ | |
649 | void | |
81e2083f | 650 | connmgr_get_snoops(const struct connmgr *mgr, struct sset *snoops) |
19a87e36 | 651 | { |
da0158d1 | 652 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
81e2083f | 653 | sset_add(snoops, pvconn_get_name(mgr->snoops[i])); |
19a87e36 BP |
654 | } |
655 | } | |
656 | ||
81e2083f BP |
657 | /* Returns true if 'mgr' has at least one snoop, false if it has none. */ |
658 | bool | |
659 | connmgr_has_snoops(const struct connmgr *mgr) | |
660 | { | |
661 | return mgr->n_snoops > 0; | |
662 | } | |
663 | ||
19a87e36 BP |
664 | static void |
665 | update_in_band_remotes(struct connmgr *mgr) | |
666 | { | |
19a87e36 | 667 | /* Allocate enough memory for as many remotes as we could possibly have. */ |
a0baa7df | 668 | size_t max_addrs = mgr->n_extra_remotes + hmap_count(&mgr->services); |
da0158d1 BP |
669 | struct sockaddr_in *addrs = xmalloc(max_addrs * sizeof *addrs); |
670 | size_t n_addrs = 0; | |
19a87e36 BP |
671 | |
672 | /* Add all the remotes. */ | |
a0baa7df BP |
673 | struct ofservice *ofservice; |
674 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
675 | const char *target = ofservice->target; | |
02334943 JR |
676 | union { |
677 | struct sockaddr_storage ss; | |
678 | struct sockaddr_in in; | |
679 | } sa; | |
19a87e36 | 680 | |
a0baa7df | 681 | if (ofservice->s.band == OFPROTO_IN_BAND |
d4763d1d | 682 | && stream_parse_target_with_default_port(target, OFP_PORT, &sa.ss) |
02334943 JR |
683 | && sa.ss.ss_family == AF_INET) { |
684 | addrs[n_addrs++] = sa.in; | |
19a87e36 BP |
685 | } |
686 | } | |
da0158d1 | 687 | for (size_t i = 0; i < mgr->n_extra_remotes; i++) { |
19a87e36 BP |
688 | addrs[n_addrs++] = mgr->extra_in_band_remotes[i]; |
689 | } | |
690 | ||
691 | /* Create or update or destroy in-band. */ | |
692 | if (n_addrs) { | |
693 | if (!mgr->in_band) { | |
694 | in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band); | |
695 | } | |
19a87e36 | 696 | } else { |
6da1e809 BP |
697 | /* in_band_run() needs a chance to delete any existing in-band flows. |
698 | * We will destroy mgr->in_band after it's done with that. */ | |
699 | } | |
700 | if (mgr->in_band) { | |
66a9ef7a | 701 | in_band_set_queue(mgr->in_band, mgr->in_band_queue); |
6da1e809 | 702 | in_band_set_remotes(mgr->in_band, addrs, n_addrs); |
19a87e36 BP |
703 | } |
704 | ||
705 | /* Clean up. */ | |
706 | free(addrs); | |
707 | } | |
708 | ||
709 | static void | |
710 | update_fail_open(struct connmgr *mgr) | |
feb8a80b | 711 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 BP |
712 | { |
713 | if (connmgr_has_controllers(mgr) | |
714 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
715 | if (!mgr->fail_open) { | |
716 | mgr->fail_open = fail_open_create(mgr->ofproto, mgr); | |
717 | } | |
718 | } else { | |
25010c68 | 719 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 | 720 | fail_open_destroy(mgr->fail_open); |
25010c68 | 721 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
722 | mgr->fail_open = NULL; |
723 | } | |
724 | } | |
725 | ||
726 | static int | |
727 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
81e2083f | 728 | const struct sset *sset) |
19a87e36 | 729 | { |
da0158d1 BP |
730 | /* Free the old pvconns. */ |
731 | struct pvconn **old_pvconns = *pvconnsp; | |
732 | size_t old_n_pvconns = *n_pvconnsp; | |
733 | for (size_t i = 0; i < old_n_pvconns; i++) { | |
734 | pvconn_close(old_pvconns[i]); | |
19a87e36 | 735 | } |
da0158d1 BP |
736 | free(old_pvconns); |
737 | ||
738 | /* Populate the new pvconns. */ | |
739 | struct pvconn **new_pvconns = xmalloc(sset_count(sset) | |
740 | * sizeof *new_pvconns); | |
741 | size_t new_n_pvconns = 0; | |
19a87e36 | 742 | |
da0158d1 BP |
743 | int retval = 0; |
744 | const char *name; | |
81e2083f | 745 | SSET_FOR_EACH (name, sset) { |
19a87e36 | 746 | struct pvconn *pvconn; |
da0158d1 | 747 | int error = pvconn_open(name, 0, 0, &pvconn); |
19a87e36 | 748 | if (!error) { |
da0158d1 | 749 | new_pvconns[new_n_pvconns++] = pvconn; |
19a87e36 | 750 | } else { |
10a89ef0 | 751 | VLOG_ERR("failed to listen on %s: %s", name, ovs_strerror(error)); |
19a87e36 BP |
752 | if (!retval) { |
753 | retval = error; | |
754 | } | |
755 | } | |
756 | } | |
757 | ||
da0158d1 BP |
758 | *pvconnsp = new_pvconns; |
759 | *n_pvconnsp = new_n_pvconns; | |
19a87e36 BP |
760 | |
761 | return retval; | |
762 | } | |
763 | ||
764 | /* Returns a "preference level" for snooping 'ofconn'. A higher return value | |
765 | * means that 'ofconn' is more interesting for monitoring than a lower return | |
766 | * value. */ | |
767 | static int | |
a0baa7df | 768 | snoop_preference(const struct ofservice *ofservice) |
19a87e36 | 769 | { |
a0baa7df BP |
770 | struct ofconn *ofconn = ofservice_first_conn(ofservice); |
771 | if (!ofconn) { | |
772 | return 0; | |
773 | } | |
774 | ||
19a87e36 | 775 | switch (ofconn->role) { |
f4f1ea7e | 776 | case OFPCR12_ROLE_MASTER: |
19a87e36 | 777 | return 3; |
f4f1ea7e | 778 | case OFPCR12_ROLE_EQUAL: |
19a87e36 | 779 | return 2; |
f4f1ea7e | 780 | case OFPCR12_ROLE_SLAVE: |
19a87e36 | 781 | return 1; |
f4f1ea7e | 782 | case OFPCR12_ROLE_NOCHANGE: |
19a87e36 BP |
783 | default: |
784 | /* Shouldn't happen. */ | |
785 | return 0; | |
786 | } | |
787 | } | |
788 | ||
789 | /* One of 'mgr''s "snoop" pvconns has accepted a new connection on 'vconn'. | |
790 | * Connects this vconn to a controller. */ | |
791 | static void | |
792 | add_snooper(struct connmgr *mgr, struct vconn *vconn) | |
793 | { | |
19a87e36 | 794 | /* Pick a controller for monitoring. */ |
a0baa7df BP |
795 | struct ofservice *best = NULL; |
796 | struct ofservice *ofservice; | |
797 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
798 | if (ofservice->rconn && | |
799 | (!best || snoop_preference(ofservice) > snoop_preference(best))) { | |
800 | best = ofservice; | |
19a87e36 BP |
801 | } |
802 | } | |
803 | ||
804 | if (best) { | |
805 | rconn_add_monitor(best->rconn, vconn); | |
806 | } else { | |
807 | VLOG_INFO_RL(&rl, "no controller connection to snoop"); | |
808 | vconn_close(vconn); | |
809 | } | |
810 | } | |
811 | \f | |
812 | /* Public ofconn functions. */ | |
813 | ||
814 | /* Returns the connection type, either OFCONN_PRIMARY or OFCONN_SERVICE. */ | |
815 | enum ofconn_type | |
816 | ofconn_get_type(const struct ofconn *ofconn) | |
817 | { | |
818 | return ofconn->type; | |
819 | } | |
820 | ||
147cc9d3 BP |
821 | /* If a master election id is defined, stores it into '*idp' and returns |
822 | * true. Otherwise, stores UINT64_MAX into '*idp' and returns false. */ | |
823 | bool | |
824 | ofconn_get_master_election_id(const struct ofconn *ofconn, uint64_t *idp) | |
825 | { | |
826 | *idp = (ofconn->connmgr->master_election_id_defined | |
827 | ? ofconn->connmgr->master_election_id | |
828 | : UINT64_MAX); | |
829 | return ofconn->connmgr->master_election_id_defined; | |
830 | } | |
831 | ||
6ea4776b JR |
832 | /* Sets the master election id. |
833 | * | |
834 | * Returns true if successful, false if the id is stale | |
835 | */ | |
836 | bool | |
837 | ofconn_set_master_election_id(struct ofconn *ofconn, uint64_t id) | |
838 | { | |
839 | if (ofconn->connmgr->master_election_id_defined | |
840 | && | |
841 | /* Unsigned difference interpreted as a two's complement signed | |
842 | * value */ | |
843 | (int64_t)(id - ofconn->connmgr->master_election_id) < 0) { | |
844 | return false; | |
845 | } | |
846 | ofconn->connmgr->master_election_id = id; | |
847 | ofconn->connmgr->master_election_id_defined = true; | |
848 | ||
849 | return true; | |
850 | } | |
851 | ||
19a87e36 BP |
852 | /* Returns the role configured for 'ofconn'. |
853 | * | |
f4f1ea7e BP |
854 | * The default role, if no other role has been set, is OFPCR12_ROLE_EQUAL. */ |
855 | enum ofp12_controller_role | |
19a87e36 BP |
856 | ofconn_get_role(const struct ofconn *ofconn) |
857 | { | |
858 | return ofconn->role; | |
859 | } | |
860 | ||
00467f73 AC |
861 | void |
862 | ofconn_send_role_status(struct ofconn *ofconn, uint32_t role, uint8_t reason) | |
863 | { | |
864 | struct ofputil_role_status status; | |
00467f73 AC |
865 | status.reason = reason; |
866 | status.role = role; | |
867 | ofconn_get_master_election_id(ofconn, &status.generation_id); | |
868 | ||
da0158d1 BP |
869 | struct ofpbuf *buf |
870 | = ofputil_encode_role_status(&status, ofconn_get_protocol(ofconn)); | |
6751a4b4 BP |
871 | if (buf) { |
872 | ofconn_send(ofconn, buf, NULL); | |
873 | } | |
00467f73 AC |
874 | } |
875 | ||
f4f1ea7e BP |
876 | /* Changes 'ofconn''s role to 'role'. If 'role' is OFPCR12_ROLE_MASTER then |
877 | * any existing master is demoted to a slave. */ | |
19a87e36 | 878 | void |
f4f1ea7e | 879 | ofconn_set_role(struct ofconn *ofconn, enum ofp12_controller_role role) |
19a87e36 | 880 | { |
00467f73 | 881 | if (role != ofconn->role && role == OFPCR12_ROLE_MASTER) { |
19a87e36 BP |
882 | struct ofconn *other; |
883 | ||
a0baa7df | 884 | LIST_FOR_EACH (other, connmgr_node, &ofconn->connmgr->conns) { |
f4f1ea7e BP |
885 | if (other->role == OFPCR12_ROLE_MASTER) { |
886 | other->role = OFPCR12_ROLE_SLAVE; | |
da0158d1 BP |
887 | ofconn_send_role_status(other, OFPCR12_ROLE_SLAVE, |
888 | OFPCRR_MASTER_REQUEST); | |
19a87e36 BP |
889 | } |
890 | } | |
891 | } | |
892 | ofconn->role = role; | |
893 | } | |
894 | ||
f0fd1a17 | 895 | void |
80d5aefd | 896 | ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool enable) |
f0fd1a17 | 897 | { |
a930d4c5 | 898 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd BP |
899 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
900 | if (enable) { | |
a930d4c5 | 901 | ac.master[OAM_PACKET_IN] |= bit; |
80d5aefd | 902 | } else { |
a930d4c5 | 903 | ac.master[OAM_PACKET_IN] &= ~bit; |
80d5aefd | 904 | } |
a930d4c5 | 905 | ofconn_set_async_config(ofconn, &ac); |
f0fd1a17 PS |
906 | } |
907 | ||
908 | bool | |
909 | ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn) | |
910 | { | |
a930d4c5 | 911 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd | 912 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
a930d4c5 | 913 | return (ac.master[OAM_PACKET_IN] & bit) != 0; |
f0fd1a17 PS |
914 | } |
915 | ||
27527aa0 | 916 | /* Returns the currently configured protocol for 'ofconn', one of OFPUTIL_P_*. |
19a87e36 | 917 | * |
eb12aa89 BP |
918 | * Returns OFPUTIL_P_NONE, which is not a valid protocol, if 'ofconn' hasn't |
919 | * completed version negotiation. This can't happen if at least one OpenFlow | |
920 | * message, other than OFPT_HELLO, has been received on the connection (such as | |
921 | * in ofproto.c's message handling code), since version negotiation is a | |
922 | * prerequisite for starting to receive messages. This means that | |
923 | * OFPUTIL_P_NONE is a special case that most callers need not worry about. */ | |
27527aa0 | 924 | enum ofputil_protocol |
e3d560db | 925 | ofconn_get_protocol(const struct ofconn *ofconn) |
19a87e36 | 926 | { |
eb12aa89 BP |
927 | if (ofconn->protocol == OFPUTIL_P_NONE && |
928 | rconn_is_connected(ofconn->rconn)) { | |
929 | int version = rconn_get_version(ofconn->rconn); | |
930 | if (version > 0) { | |
931 | ofconn_set_protocol(CONST_CAST(struct ofconn *, ofconn), | |
932 | ofputil_protocol_from_ofp_version(version)); | |
933 | } | |
934 | } | |
935 | ||
27527aa0 | 936 | return ofconn->protocol; |
19a87e36 BP |
937 | } |
938 | ||
27527aa0 BP |
939 | /* Sets the protocol for 'ofconn' to 'protocol' (one of OFPUTIL_P_*). |
940 | * | |
941 | * (This doesn't actually send anything to accomplish this. Presumably the | |
942 | * caller already did that.) */ | |
19a87e36 | 943 | void |
27527aa0 | 944 | ofconn_set_protocol(struct ofconn *ofconn, enum ofputil_protocol protocol) |
19a87e36 | 945 | { |
27527aa0 | 946 | ofconn->protocol = protocol; |
b9320e51 | 947 | update_want_packet_in_on_miss(ofconn); |
19a87e36 BP |
948 | } |
949 | ||
54834960 EJ |
950 | /* Returns the currently configured packet in format for 'ofconn', one of |
951 | * NXPIF_*. | |
952 | * | |
6409e008 | 953 | * The default, if no other format has been set, is NXPIF_STANDARD. */ |
d8790c08 | 954 | enum ofputil_packet_in_format |
54834960 EJ |
955 | ofconn_get_packet_in_format(struct ofconn *ofconn) |
956 | { | |
957 | return ofconn->packet_in_format; | |
958 | } | |
959 | ||
960 | /* Sets the packet in format for 'ofconn' to 'packet_in_format' (one of | |
961 | * NXPIF_*). */ | |
962 | void | |
963 | ofconn_set_packet_in_format(struct ofconn *ofconn, | |
d8790c08 | 964 | enum ofputil_packet_in_format packet_in_format) |
54834960 EJ |
965 | { |
966 | ofconn->packet_in_format = packet_in_format; | |
967 | } | |
968 | ||
a7349929 BP |
969 | /* Sets the controller connection ID for 'ofconn' to 'controller_id'. |
970 | * | |
971 | * The connection controller ID is used for OFPP_CONTROLLER and | |
972 | * NXAST_CONTROLLER actions. See "struct nx_action_controller" for details. */ | |
973 | void | |
974 | ofconn_set_controller_id(struct ofconn *ofconn, uint16_t controller_id) | |
975 | { | |
976 | ofconn->controller_id = controller_id; | |
b9320e51 | 977 | update_want_packet_in_on_miss(ofconn); |
a7349929 BP |
978 | } |
979 | ||
19a87e36 BP |
980 | /* Returns the default miss send length for 'ofconn'. */ |
981 | int | |
982 | ofconn_get_miss_send_len(const struct ofconn *ofconn) | |
983 | { | |
984 | return ofconn->miss_send_len; | |
985 | } | |
986 | ||
987 | /* Sets the default miss send length for 'ofconn' to 'miss_send_len'. */ | |
988 | void | |
989 | ofconn_set_miss_send_len(struct ofconn *ofconn, int miss_send_len) | |
990 | { | |
991 | ofconn->miss_send_len = miss_send_len; | |
992 | } | |
993 | ||
80d5aefd BP |
994 | void |
995 | ofconn_set_async_config(struct ofconn *ofconn, | |
a930d4c5 | 996 | const struct ofputil_async_cfg *ac) |
80d5aefd | 997 | { |
a930d4c5 BP |
998 | if (!ofconn->async_cfg) { |
999 | ofconn->async_cfg = xmalloc(sizeof *ofconn->async_cfg); | |
1000 | } | |
1001 | *ofconn->async_cfg = *ac; | |
e19a6769 YHW |
1002 | |
1003 | if (ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)) | |
1004 | < OFP14_VERSION) { | |
1005 | if (ofconn->async_cfg->master[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
1006 | ofconn->async_cfg->master[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
1007 | } | |
1008 | if (ofconn->async_cfg->slave[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
1009 | ofconn->async_cfg->slave[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
1010 | } | |
1011 | } | |
80d5aefd BP |
1012 | } |
1013 | ||
a930d4c5 BP |
1014 | struct ofputil_async_cfg |
1015 | ofconn_get_async_config(const struct ofconn *ofconn) | |
c423b3b3 | 1016 | { |
a930d4c5 BP |
1017 | if (ofconn->async_cfg) { |
1018 | return *ofconn->async_cfg; | |
3a11fd5b SS |
1019 | } |
1020 | ||
a930d4c5 | 1021 | int version = rconn_get_version(ofconn->rconn); |
a0baa7df | 1022 | return (version < 0 || !ofconn->ofservice->s.enable_async_msgs |
a930d4c5 BP |
1023 | ? OFPUTIL_ASYNC_CFG_INIT |
1024 | : ofputil_async_cfg_default(version)); | |
c423b3b3 AC |
1025 | } |
1026 | ||
19a87e36 BP |
1027 | /* Sends 'msg' on 'ofconn', accounting it as a reply. (If there is a |
1028 | * sufficient number of OpenFlow replies in-flight on a single ofconn, then the | |
1029 | * connmgr will stop accepting new OpenFlow requests on that ofconn until the | |
1030 | * controller has accepted some of the replies.) */ | |
1031 | void | |
1032 | ofconn_send_reply(const struct ofconn *ofconn, struct ofpbuf *msg) | |
1033 | { | |
1034 | ofconn_send(ofconn, msg, ofconn->reply_counter); | |
1035 | } | |
1036 | ||
63f2140a BP |
1037 | /* Sends each of the messages in list 'replies' on 'ofconn' in order, |
1038 | * accounting them as replies. */ | |
1039 | void | |
ca6ba700 | 1040 | ofconn_send_replies(const struct ofconn *ofconn, struct ovs_list *replies) |
63f2140a | 1041 | { |
5f03c983 | 1042 | struct ofpbuf *reply; |
63f2140a | 1043 | |
5f03c983 | 1044 | LIST_FOR_EACH_POP (reply, list_node, replies) { |
63f2140a BP |
1045 | ofconn_send_reply(ofconn, reply); |
1046 | } | |
1047 | } | |
1048 | ||
52c57cbb | 1049 | /* Sends 'error' on 'ofconn', as a reply to 'request'. */ |
1be5ff75 BP |
1050 | void |
1051 | ofconn_send_error(const struct ofconn *ofconn, | |
90bf1e07 | 1052 | const struct ofp_header *request, enum ofperr error) |
1be5ff75 | 1053 | { |
07c8ec21 | 1054 | static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10); |
da0158d1 | 1055 | struct ofpbuf *reply = ofperr_encode_reply(error, request); |
07c8ec21 | 1056 | if (!VLOG_DROP_INFO(&err_rl)) { |
da0158d1 | 1057 | size_t request_len = ntohs(request->length); |
07c8ec21 | 1058 | |
da0158d1 BP |
1059 | enum ofpraw raw; |
1060 | const char *type_name = (!ofpraw_decode_partial(&raw, request, | |
1061 | MIN(64, request_len)) | |
1062 | ? ofpraw_get_name(raw) | |
1063 | : "invalid"); | |
07c8ec21 BP |
1064 | |
1065 | VLOG_INFO("%s: sending %s error reply to %s message", | |
1066 | rconn_get_name(ofconn->rconn), ofperr_to_string(error), | |
1067 | type_name); | |
1068 | } | |
1069 | ofconn_send_reply(ofconn, reply); | |
1be5ff75 BP |
1070 | } |
1071 | ||
696d1bcf BP |
1072 | /* Reports that a flow_mod operation of the type specified by 'command' was |
1073 | * successfully executed by 'ofconn', so that the connmgr can log it. */ | |
1074 | void | |
1075 | ofconn_report_flow_mod(struct ofconn *ofconn, | |
1076 | enum ofp_flow_mod_command command) | |
1077 | { | |
696d1bcf BP |
1078 | switch (command) { |
1079 | case OFPFC_ADD: | |
1080 | ofconn->n_add++; | |
1081 | break; | |
1082 | ||
1083 | case OFPFC_MODIFY: | |
1084 | case OFPFC_MODIFY_STRICT: | |
1085 | ofconn->n_modify++; | |
1086 | break; | |
1087 | ||
1088 | case OFPFC_DELETE: | |
1089 | case OFPFC_DELETE_STRICT: | |
1090 | ofconn->n_delete++; | |
1091 | break; | |
1092 | } | |
1093 | ||
da0158d1 | 1094 | long long int now = time_msec(); |
696d1bcf BP |
1095 | if (ofconn->next_op_report == LLONG_MAX) { |
1096 | ofconn->first_op = now; | |
1097 | ofconn->next_op_report = MAX(now + 10 * 1000, ofconn->op_backoff); | |
1098 | ofconn->op_backoff = ofconn->next_op_report + 60 * 1000; | |
1099 | } | |
1100 | ofconn->last_op = now; | |
1101 | } | |
ff09bc08 JR |
1102 | \f |
1103 | /* OpenFlow 1.4 bundles. */ | |
696d1bcf | 1104 | |
ff09bc08 JR |
1105 | static inline uint32_t |
1106 | bundle_hash(uint32_t id) | |
777af88d | 1107 | { |
ff09bc08 | 1108 | return hash_int(id, 0); |
777af88d AC |
1109 | } |
1110 | ||
ff09bc08 JR |
1111 | struct ofp_bundle * |
1112 | ofconn_get_bundle(struct ofconn *ofconn, uint32_t id) | |
1113 | { | |
1114 | struct ofp_bundle *bundle; | |
1115 | ||
1116 | HMAP_FOR_EACH_IN_BUCKET(bundle, node, bundle_hash(id), &ofconn->bundles) { | |
1117 | if (bundle->id == id) { | |
1118 | return bundle; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | return NULL; | |
1123 | } | |
1124 | ||
52c57cbb | 1125 | void |
ff09bc08 JR |
1126 | ofconn_insert_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1127 | { | |
ff09bc08 | 1128 | hmap_insert(&ofconn->bundles, &bundle->node, bundle_hash(bundle->id)); |
ff09bc08 JR |
1129 | } |
1130 | ||
52c57cbb | 1131 | void |
ff09bc08 JR |
1132 | ofconn_remove_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1133 | { | |
1134 | hmap_remove(&ofconn->bundles, &bundle->node); | |
ff09bc08 JR |
1135 | } |
1136 | ||
1137 | static void | |
1138 | bundle_remove_all(struct ofconn *ofconn) | |
1139 | { | |
1140 | struct ofp_bundle *b, *next; | |
1141 | ||
1142 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { | |
0c78eebe | 1143 | ofp_bundle_remove__(ofconn, b); |
ff09bc08 JR |
1144 | } |
1145 | } | |
51bb26fa JR |
1146 | |
1147 | static void | |
1148 | bundle_remove_expired(struct ofconn *ofconn, long long int now) | |
1149 | { | |
7fdd2082 | 1150 | long long int limit = now - bundle_idle_timeout; |
51bb26fa | 1151 | |
da0158d1 | 1152 | struct ofp_bundle *b, *next; |
51bb26fa JR |
1153 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { |
1154 | if (b->used <= limit) { | |
52c57cbb | 1155 | ofconn_send_error(ofconn, b->msg, OFPERR_OFPBFC_TIMEOUT); |
0c78eebe | 1156 | ofp_bundle_remove__(ofconn, b); |
51bb26fa JR |
1157 | } |
1158 | } | |
1159 | } | |
19a87e36 BP |
1160 | \f |
1161 | /* Private ofconn functions. */ | |
1162 | ||
a0baa7df BP |
1163 | static void |
1164 | ofconn_create(struct ofservice *ofservice, struct rconn *rconn, | |
c66be90b | 1165 | const struct ofproto_controller *settings) |
a0baa7df | 1166 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 1167 | { |
a0baa7df | 1168 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 | 1169 | |
da0158d1 | 1170 | struct ofconn *ofconn = xzalloc(sizeof *ofconn); |
c4b31872 | 1171 | |
a0baa7df BP |
1172 | ofconn->connmgr = ofservice->connmgr; |
1173 | ovs_list_push_back(&ofservice->connmgr->conns, &ofconn->connmgr_node); | |
777af88d | 1174 | |
fd4b7a0e BP |
1175 | hmap_init(&ofconn->assembler); |
1176 | ||
a0baa7df BP |
1177 | ofconn->ofservice = ofservice; |
1178 | ovs_list_push_back(&ofservice->conns, &ofconn->ofservice_node); | |
19a87e36 | 1179 | |
a0baa7df | 1180 | ofconn->rconn = rconn; |
c66be90b | 1181 | ofconn->type = settings->type; |
a0baa7df | 1182 | ofconn->band = settings->band; |
696d1bcf | 1183 | |
f4f1ea7e | 1184 | ofconn->role = OFPCR12_ROLE_EQUAL; |
eb12aa89 | 1185 | ofconn_set_protocol(ofconn, OFPUTIL_P_NONE); |
d8790c08 | 1186 | ofconn->packet_in_format = OFPUTIL_PACKET_IN_STD; |
c4b31872 | 1187 | |
3dabc687 | 1188 | ofconn->packet_in_queue_size = settings->max_pktq_size; |
c4b31872 | 1189 | ofconn->packet_in_counter = rconn_packet_counter_create(); |
c4b31872 BP |
1190 | ofconn->miss_send_len = (ofconn->type == OFCONN_PRIMARY |
1191 | ? OFP_DEFAULT_MISS_SEND_LEN | |
1192 | : 0); | |
a7349929 | 1193 | ofconn->controller_id = 0; |
c4b31872 | 1194 | |
c4b31872 | 1195 | ofconn->reply_counter = rconn_packet_counter_create(); |
80d5aefd | 1196 | |
a930d4c5 | 1197 | ofconn->async_cfg = NULL; |
2b07c8b1 | 1198 | |
696d1bcf BP |
1199 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; |
1200 | ofconn->first_op = ofconn->last_op = LLONG_MIN; | |
1201 | ofconn->next_op_report = LLONG_MAX; | |
1202 | ofconn->op_backoff = LLONG_MIN; | |
1203 | ||
a0baa7df | 1204 | hmap_init(&ofconn->monitors); |
2b07c8b1 | 1205 | ofconn->monitor_counter = rconn_packet_counter_create(); |
fd4b7a0e | 1206 | |
a0baa7df BP |
1207 | ovs_list_init(&ofconn->updates); |
1208 | ||
1209 | hmap_init(&ofconn->bundles); | |
1210 | ofconn->next_bundle_expiry_check = time_msec() + BUNDLE_EXPIRY_INTERVAL; | |
1211 | ||
1212 | ofconn_set_rate_limit(ofconn, settings->rate_limit, settings->burst_limit); | |
1213 | ||
1214 | ovs_mutex_unlock(&ofproto_mutex); | |
7ee20df1 BP |
1215 | } |
1216 | ||
19a87e36 BP |
1217 | static void |
1218 | ofconn_destroy(struct ofconn *ofconn) | |
3b0c6b56 | 1219 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 1220 | { |
a0baa7df BP |
1221 | if (!ofconn) { |
1222 | return; | |
1223 | } | |
1224 | ||
1225 | ofconn_log_flow_mods(ofconn); | |
1226 | ||
1227 | ovs_list_remove(&ofconn->connmgr_node); | |
1228 | ovs_list_remove(&ofconn->ofservice_node); | |
1229 | ||
1230 | if (ofconn->rconn != ofconn->ofservice->rconn) { | |
1231 | rconn_destroy(ofconn->rconn); | |
1232 | } | |
7ee20df1 | 1233 | |
b9320e51 JR |
1234 | /* Force clearing of want_packet_in_on_miss to keep the global count |
1235 | * accurate. */ | |
1236 | ofconn->controller_id = 1; | |
1237 | update_want_packet_in_on_miss(ofconn); | |
1238 | ||
a0baa7df BP |
1239 | rconn_packet_counter_destroy(ofconn->packet_in_counter); |
1240 | for (int i = 0; i < N_SCHEDULERS; i++) { | |
1241 | if (ofconn->schedulers[i]) { | |
1242 | pinsched_destroy(ofconn->schedulers[i]); | |
1243 | } | |
19a87e36 BP |
1244 | } |
1245 | ||
a0baa7df BP |
1246 | rconn_packet_counter_destroy(ofconn->reply_counter); |
1247 | ||
1248 | free(ofconn->async_cfg); | |
777af88d | 1249 | |
a0baa7df BP |
1250 | struct ofmonitor *monitor, *next_monitor; |
1251 | HMAP_FOR_EACH_SAFE (monitor, next_monitor, ofconn_node, | |
1252 | &ofconn->monitors) { | |
1253 | ofmonitor_destroy(monitor); | |
1254 | } | |
92bbc96a | 1255 | hmap_destroy(&ofconn->monitors); |
2b07c8b1 | 1256 | rconn_packet_counter_destroy(ofconn->monitor_counter); |
fd4b7a0e | 1257 | |
a0baa7df BP |
1258 | ofpbuf_list_delete(&ofconn->updates); /* ...but it should be empty. */ |
1259 | ||
1260 | bundle_remove_all(ofconn); | |
1261 | hmap_destroy(&ofconn->bundles); | |
fd4b7a0e | 1262 | |
19a87e36 BP |
1263 | free(ofconn); |
1264 | } | |
1265 | ||
a0baa7df | 1266 | /* Reconfigures 'ofconn' to match 'c'. */ |
19a87e36 BP |
1267 | static void |
1268 | ofconn_reconfigure(struct ofconn *ofconn, const struct ofproto_controller *c) | |
1269 | { | |
19a87e36 BP |
1270 | rconn_set_max_backoff(ofconn->rconn, c->max_backoff); |
1271 | ||
da0158d1 | 1272 | int probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0; |
19a87e36 BP |
1273 | rconn_set_probe_interval(ofconn->rconn, probe_interval); |
1274 | ||
a0baa7df | 1275 | ofconn->band = c->band; |
3dabc687 | 1276 | ofconn->packet_in_queue_size = c->max_pktq_size; |
a0baa7df | 1277 | |
19a87e36 | 1278 | ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit); |
0442efd9 | 1279 | |
0442efd9 MM |
1280 | if (c->dscp != rconn_get_dscp(ofconn->rconn)) { |
1281 | rconn_set_dscp(ofconn->rconn, c->dscp); | |
1282 | rconn_reconnect(ofconn->rconn); | |
1283 | } | |
19a87e36 BP |
1284 | } |
1285 | ||
7ee20df1 BP |
1286 | /* Returns true if it makes sense for 'ofconn' to receive and process OpenFlow |
1287 | * messages. */ | |
1288 | static bool | |
1289 | ofconn_may_recv(const struct ofconn *ofconn) | |
1290 | { | |
a3d1ff00 | 1291 | int count = rconn_packet_counter_n_packets(ofconn->reply_counter); |
b20f4073 | 1292 | return count < OFCONN_REPLY_MAX; |
7ee20df1 BP |
1293 | } |
1294 | ||
19a87e36 BP |
1295 | static void |
1296 | ofconn_run(struct ofconn *ofconn, | |
b20f4073 | 1297 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 1298 | const struct ovs_list *msgs)) |
19a87e36 BP |
1299 | { |
1300 | struct connmgr *mgr = ofconn->connmgr; | |
19a87e36 | 1301 | |
da0158d1 | 1302 | for (size_t i = 0; i < N_SCHEDULERS; i++) { |
ca6ba700 | 1303 | struct ovs_list txq; |
a6f75961 BP |
1304 | |
1305 | pinsched_run(ofconn->schedulers[i], &txq); | |
1306 | do_send_packet_ins(ofconn, &txq); | |
19a87e36 BP |
1307 | } |
1308 | ||
1309 | rconn_run(ofconn->rconn); | |
1310 | ||
b20f4073 | 1311 | /* Limit the number of iterations to avoid starving other tasks. */ |
da0158d1 | 1312 | for (int i = 0; i < 50 && ofconn_may_recv(ofconn); i++) { |
b20f4073 BP |
1313 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); |
1314 | if (!of_msg) { | |
1315 | break; | |
1316 | } | |
7ee20df1 | 1317 | |
b20f4073 BP |
1318 | if (mgr->fail_open) { |
1319 | fail_open_maybe_recover(mgr->fail_open); | |
19a87e36 | 1320 | } |
19a87e36 | 1321 | |
fd4b7a0e BP |
1322 | struct ovs_list msgs; |
1323 | enum ofperr error = ofpmp_assembler_execute(&ofconn->assembler, of_msg, | |
1324 | &msgs, time_msec()); | |
1325 | if (error) { | |
1326 | ofconn_send_error(ofconn, of_msg->data, error); | |
1327 | ofpbuf_delete(of_msg); | |
1328 | } else if (!ovs_list_is_empty(&msgs)) { | |
1329 | handle_openflow(ofconn, &msgs); | |
1330 | ofpbuf_list_delete(&msgs); | |
1331 | } | |
b20f4073 | 1332 | } |
696d1bcf | 1333 | |
51bb26fa JR |
1334 | long long int now = time_msec(); |
1335 | ||
1336 | if (now >= ofconn->next_bundle_expiry_check) { | |
1337 | ofconn->next_bundle_expiry_check = now + BUNDLE_EXPIRY_INTERVAL; | |
1338 | bundle_remove_expired(ofconn, now); | |
1339 | } | |
1340 | ||
1341 | if (now >= ofconn->next_op_report) { | |
696d1bcf BP |
1342 | ofconn_log_flow_mods(ofconn); |
1343 | } | |
1344 | ||
fd4b7a0e BP |
1345 | struct ofpbuf *error = ofpmp_assembler_run(&ofconn->assembler, |
1346 | time_msec()); | |
1347 | if (error) { | |
1348 | ofconn_send(ofconn, error, NULL); | |
1349 | } | |
1350 | ||
3b0c6b56 | 1351 | ovs_mutex_lock(&ofproto_mutex); |
a0baa7df BP |
1352 | if (rconn_is_reliable(ofconn->rconn) |
1353 | ? !rconn_is_connected(ofconn->rconn) | |
1354 | : !rconn_is_alive(ofconn->rconn)) { | |
19a87e36 BP |
1355 | ofconn_destroy(ofconn); |
1356 | } | |
3b0c6b56 | 1357 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
1358 | } |
1359 | ||
1360 | static void | |
b20f4073 | 1361 | ofconn_wait(struct ofconn *ofconn) |
19a87e36 | 1362 | { |
da0158d1 | 1363 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1364 | pinsched_wait(ofconn->schedulers[i]); |
1365 | } | |
1366 | rconn_run_wait(ofconn->rconn); | |
b20f4073 | 1367 | if (ofconn_may_recv(ofconn)) { |
19a87e36 | 1368 | rconn_recv_wait(ofconn->rconn); |
19a87e36 | 1369 | } |
696d1bcf BP |
1370 | if (ofconn->next_op_report != LLONG_MAX) { |
1371 | poll_timer_wait_until(ofconn->next_op_report); | |
1372 | } | |
fd4b7a0e | 1373 | poll_timer_wait_until(ofpmp_assembler_wait(&ofconn->assembler)); |
696d1bcf BP |
1374 | } |
1375 | ||
1376 | static void | |
1377 | ofconn_log_flow_mods(struct ofconn *ofconn) | |
1378 | { | |
1379 | int n_flow_mods = ofconn->n_add + ofconn->n_delete + ofconn->n_modify; | |
1380 | if (n_flow_mods) { | |
1381 | long long int ago = (time_msec() - ofconn->first_op) / 1000; | |
1382 | long long int interval = (ofconn->last_op - ofconn->first_op) / 1000; | |
1383 | struct ds s; | |
1384 | ||
1385 | ds_init(&s); | |
1386 | ds_put_format(&s, "%d flow_mods ", n_flow_mods); | |
1387 | if (interval == ago) { | |
1388 | ds_put_format(&s, "in the last %lld s", ago); | |
1389 | } else if (interval) { | |
1390 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1391 | interval, ago); | |
1392 | } else { | |
1393 | ds_put_format(&s, "%lld s ago", ago); | |
1394 | } | |
1395 | ||
1396 | ds_put_cstr(&s, " ("); | |
1397 | if (ofconn->n_add) { | |
1398 | ds_put_format(&s, "%d adds, ", ofconn->n_add); | |
1399 | } | |
1400 | if (ofconn->n_delete) { | |
1401 | ds_put_format(&s, "%d deletes, ", ofconn->n_delete); | |
1402 | } | |
1403 | if (ofconn->n_modify) { | |
1404 | ds_put_format(&s, "%d modifications, ", ofconn->n_modify); | |
1405 | } | |
1406 | s.length -= 2; | |
1407 | ds_put_char(&s, ')'); | |
1408 | ||
1409 | VLOG_INFO("%s: %s", rconn_get_name(ofconn->rconn), ds_cstr(&s)); | |
1410 | ds_destroy(&s); | |
1411 | ||
1412 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; | |
1413 | } | |
1414 | ofconn->next_op_report = LLONG_MAX; | |
19a87e36 BP |
1415 | } |
1416 | ||
80d5aefd BP |
1417 | /* Returns true if 'ofconn' should receive asynchronous messages of the given |
1418 | * OAM_* 'type' and 'reason', which should be a OFPR_* value for OAM_PACKET_IN, | |
1419 | * a OFPPR_* value for OAM_PORT_STATUS, or an OFPRR_* value for | |
1420 | * OAM_FLOW_REMOVED. Returns false if the message should not be sent on | |
1421 | * 'ofconn'. */ | |
19a87e36 | 1422 | static bool |
80d5aefd | 1423 | ofconn_receives_async_msg(const struct ofconn *ofconn, |
98090482 | 1424 | enum ofputil_async_msg_type type, |
80d5aefd | 1425 | unsigned int reason) |
19a87e36 | 1426 | { |
cb22974d BP |
1427 | ovs_assert(reason < 32); |
1428 | ovs_assert((unsigned int) type < OAM_N_TYPES); | |
19a87e36 | 1429 | |
30e699b7 | 1430 | if (!rconn_is_connected(ofconn->rconn) || !ofconn_get_protocol(ofconn)) { |
903f6c4f NS |
1431 | return false; |
1432 | } | |
1433 | ||
80d5aefd | 1434 | /* Keep the following code in sync with the documentation in the |
7c9afefd | 1435 | * "Asynchronous Messages" section in 'topics/design' */ |
80d5aefd BP |
1436 | |
1437 | if (ofconn->type == OFCONN_SERVICE && !ofconn->miss_send_len) { | |
1438 | /* Service connections don't get asynchronous messages unless they have | |
1439 | * explicitly asked for them by setting a nonzero miss send length. */ | |
f0fd1a17 | 1440 | return false; |
f0fd1a17 | 1441 | } |
80d5aefd | 1442 | |
a930d4c5 BP |
1443 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
1444 | uint32_t *masks = (ofconn->role == OFPCR12_ROLE_SLAVE | |
1445 | ? ac.slave | |
1446 | : ac.master); | |
1447 | return (masks[type] & (1u << reason)) != 0; | |
f0fd1a17 PS |
1448 | } |
1449 | ||
b9320e51 | 1450 | /* This function returns true to indicate that a packet_in message |
6b83a3c5 | 1451 | * for a "table-miss" should be sent to at least one controller. |
6b83a3c5 | 1452 | * |
b9320e51 | 1453 | * False otherwise. */ |
6b83a3c5 | 1454 | bool |
b9320e51 | 1455 | connmgr_wants_packet_in_on_miss(struct connmgr *mgr) |
6b83a3c5 | 1456 | { |
b9320e51 | 1457 | int count; |
3fc76ec0 | 1458 | |
b9320e51 JR |
1459 | atomic_read_relaxed(&mgr->want_packet_in_on_miss, &count); |
1460 | return count > 0; | |
6b83a3c5 SH |
1461 | } |
1462 | ||
19a87e36 BP |
1463 | /* Returns a human-readable name for an OpenFlow connection between 'mgr' and |
1464 | * 'target', suitable for use in log messages for identifying the connection. | |
1465 | * | |
1466 | * The name is dynamically allocated. The caller should free it (with free()) | |
1467 | * when it is no longer needed. */ | |
1468 | static char * | |
1469 | ofconn_make_name(const struct connmgr *mgr, const char *target) | |
1470 | { | |
1471 | return xasprintf("%s<->%s", mgr->name, target); | |
1472 | } | |
1473 | ||
1474 | static void | |
1475 | ofconn_set_rate_limit(struct ofconn *ofconn, int rate, int burst) | |
1476 | { | |
da0158d1 | 1477 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1478 | struct pinsched **s = &ofconn->schedulers[i]; |
1479 | ||
1480 | if (rate > 0) { | |
1481 | if (!*s) { | |
1482 | *s = pinsched_create(rate, burst); | |
1483 | } else { | |
1484 | pinsched_set_limits(*s, rate, burst); | |
1485 | } | |
1486 | } else { | |
1487 | pinsched_destroy(*s); | |
1488 | *s = NULL; | |
1489 | } | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | static void | |
1494 | ofconn_send(const struct ofconn *ofconn, struct ofpbuf *msg, | |
1495 | struct rconn_packet_counter *counter) | |
1496 | { | |
982697a4 | 1497 | ofpmsg_update_length(msg); |
acb9da40 | 1498 | rconn_send(ofconn->rconn, msg, counter); |
19a87e36 BP |
1499 | } |
1500 | \f | |
1501 | /* Sending asynchronous messages. */ | |
1502 | ||
042b8f42 | 1503 | /* Sends an OFPT_PORT_STATUS message with 'new_pp' and 'reason' to appropriate |
2a6f78e0 BP |
1504 | * controllers managed by 'mgr'. For messages caused by a controller |
1505 | * OFPT_PORT_MOD, specify 'source' as the controller connection that sent the | |
042b8f42 BP |
1506 | * request; otherwise, specify 'source' as NULL. |
1507 | * | |
1508 | * If 'reason' is OFPPR_MODIFY and 'old_pp' is nonnull, then messages are | |
1509 | * suppressed in the case where the change would not be visible to a particular | |
1510 | * controller. For example, OpenFlow 1.0 does not have the OFPPS_LIVE flag, so | |
1511 | * this would suppress a change solely to that flag from being sent to an | |
1512 | * OpenFlow 1.0 controller. */ | |
19a87e36 | 1513 | void |
2a6f78e0 | 1514 | connmgr_send_port_status(struct connmgr *mgr, struct ofconn *source, |
042b8f42 BP |
1515 | const struct ofputil_phy_port *old_pp, |
1516 | const struct ofputil_phy_port *new_pp, | |
1517 | uint8_t reason) | |
19a87e36 BP |
1518 | { |
1519 | /* XXX Should limit the number of queued port status change messages. */ | |
042b8f42 | 1520 | struct ofputil_port_status new_ps = { reason, *new_pp }; |
19a87e36 | 1521 | |
042b8f42 | 1522 | struct ofconn *ofconn; |
a0baa7df | 1523 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
80d5aefd | 1524 | if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) { |
2a6f78e0 BP |
1525 | /* Before 1.5, OpenFlow specified that OFPT_PORT_MOD should not |
1526 | * generate OFPT_PORT_STATUS messages. That requirement was a | |
1527 | * relic of how OpenFlow originally supported a single controller, | |
1528 | * so that one could expect the controller to already know the | |
1529 | * changes it had made. | |
1530 | * | |
1531 | * EXT-338 changes OpenFlow 1.5 OFPT_PORT_MOD to send | |
1532 | * OFPT_PORT_STATUS messages to every controller. This is | |
1533 | * obviously more useful in the multi-controller case. We could | |
1534 | * always implement it that way in OVS, but that would risk | |
1535 | * confusing controllers that are intended for single-controller | |
1536 | * use only. (Imagine a controller that generates an OFPT_PORT_MOD | |
1537 | * in response to any OFPT_PORT_STATUS!) | |
1538 | * | |
1539 | * So this compromises: for OpenFlow 1.4 and earlier, it generates | |
1540 | * OFPT_PORT_STATUS for OFPT_PORT_MOD, but not back to the | |
1541 | * originating controller. In a single-controller environment, in | |
1542 | * particular, this means that it will never generate | |
1543 | * OFPT_PORT_STATUS for OFPT_PORT_MOD at all. */ | |
1544 | if (ofconn == source | |
1545 | && rconn_get_version(ofconn->rconn) < OFP15_VERSION) { | |
1546 | continue; | |
1547 | } | |
1548 | ||
042b8f42 BP |
1549 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1550 | struct ofpbuf *msg = ofputil_encode_port_status(&new_ps, protocol); | |
1551 | if (reason == OFPPR_MODIFY && old_pp) { | |
1552 | struct ofputil_port_status old_ps = { reason, *old_pp }; | |
1553 | struct ofpbuf *old_msg = ofputil_encode_port_status(&old_ps, | |
1554 | protocol); | |
1555 | bool suppress = ofpbuf_equal(msg, old_msg); | |
1556 | ofpbuf_delete(old_msg); | |
1557 | ||
1558 | if (suppress) { | |
1559 | ofpbuf_delete(msg); | |
1560 | continue; | |
1561 | } | |
1562 | } | |
1563 | ||
9e1fd49b | 1564 | ofconn_send(ofconn, msg, NULL); |
19a87e36 | 1565 | } |
19a87e36 BP |
1566 | } |
1567 | } | |
1568 | ||
3c35db62 NR |
1569 | /* Sends an OFPT_REQUESTFORWARD message with 'request' and 'reason' to |
1570 | * appropriate controllers managed by 'mgr'. For messages caused by a | |
1571 | * controller OFPT_GROUP_MOD and OFPT_METER_MOD, specify 'source' as the | |
1572 | * controller connection that sent the request; otherwise, specify 'source' | |
1573 | * as NULL. */ | |
1574 | void | |
1575 | connmgr_send_requestforward(struct connmgr *mgr, const struct ofconn *source, | |
1576 | const struct ofputil_requestforward *rf) | |
1577 | { | |
1578 | struct ofconn *ofconn; | |
1579 | ||
a0baa7df | 1580 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
98a9272b ZW |
1581 | /* METER_MOD only supported in OF13 and up. */ |
1582 | if (rf->reason == OFPRFR_METER_MOD | |
1583 | && rconn_get_version(ofconn->rconn) < OFP13_VERSION) { | |
1584 | continue; | |
1585 | } | |
1586 | ||
3c35db62 | 1587 | if (ofconn_receives_async_msg(ofconn, OAM_REQUESTFORWARD, rf->reason) |
3c35db62 NR |
1588 | && ofconn != source) { |
1589 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); | |
1590 | ofconn_send(ofconn, ofputil_encode_requestforward(rf, protocol), | |
1591 | NULL); | |
1592 | } | |
1593 | } | |
1594 | } | |
1595 | ||
19a87e36 | 1596 | /* Sends an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message based on 'fr' to |
25010c68 JR |
1597 | * appropriate controllers managed by 'mgr'. |
1598 | * | |
1599 | * This may be called from the RCU thread. */ | |
19a87e36 BP |
1600 | void |
1601 | connmgr_send_flow_removed(struct connmgr *mgr, | |
1602 | const struct ofputil_flow_removed *fr) | |
25010c68 | 1603 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 BP |
1604 | { |
1605 | struct ofconn *ofconn; | |
1606 | ||
a0baa7df | 1607 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
80d5aefd | 1608 | if (ofconn_receives_async_msg(ofconn, OAM_FLOW_REMOVED, fr->reason)) { |
80d5aefd BP |
1609 | /* Account flow expirations as replies to OpenFlow requests. That |
1610 | * works because preventing OpenFlow requests from being processed | |
1611 | * also prevents new flows from being added (and expiring). (It | |
1612 | * also prevents processing OpenFlow requests that would not add | |
1613 | * new flows, so it is imperfect.) */ | |
da0158d1 BP |
1614 | struct ofpbuf *msg = ofputil_encode_flow_removed( |
1615 | fr, ofconn_get_protocol(ofconn)); | |
80d5aefd | 1616 | ofconn_send_reply(ofconn, msg); |
19a87e36 | 1617 | } |
6c6eedc5 SJ |
1618 | } |
1619 | } | |
1620 | ||
1621 | /* Sends an OFPT_TABLE_STATUS message with 'reason' to appropriate controllers | |
1622 | * managed by 'mgr'. When the table state changes, the controller needs to be | |
1623 | * informed with the OFPT_TABLE_STATUS message. The reason values | |
1624 | * OFPTR_VACANCY_DOWN and OFPTR_VACANCY_UP identify a vacancy message. The | |
1625 | * vacancy events are generated when the remaining space in the flow table | |
1626 | * changes and crosses one of the vacancy thereshold specified by | |
1627 | * OFPT_TABLE_MOD. */ | |
1628 | void | |
1629 | connmgr_send_table_status(struct connmgr *mgr, | |
1630 | const struct ofputil_table_desc *td, | |
1631 | uint8_t reason) | |
1632 | { | |
da0158d1 BP |
1633 | struct ofputil_table_status ts = { |
1634 | .reason = reason, | |
1635 | .desc = *td | |
1636 | }; | |
6c6eedc5 | 1637 | |
da0158d1 | 1638 | struct ofconn *ofconn; |
a0baa7df | 1639 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
6c6eedc5 SJ |
1640 | if (ofconn_receives_async_msg(ofconn, OAM_TABLE_STATUS, reason)) { |
1641 | struct ofpbuf *msg; | |
1642 | ||
1643 | msg = ofputil_encode_table_status(&ts, | |
1644 | ofconn_get_protocol(ofconn)); | |
1645 | if (msg) { | |
1646 | ofconn_send(ofconn, msg, NULL); | |
1647 | } | |
1648 | } | |
19a87e36 BP |
1649 | } |
1650 | } | |
1651 | ||
78bd1cd0 | 1652 | /* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as |
77ab5fd2 | 1653 | * necessary according to their individual configurations. */ |
19a87e36 | 1654 | void |
a2b53dec BP |
1655 | connmgr_send_async_msg(struct connmgr *mgr, |
1656 | const struct ofproto_async_msg *am) | |
19a87e36 | 1657 | { |
29ebe880 | 1658 | struct ofconn *ofconn; |
19a87e36 | 1659 | |
a0baa7df | 1660 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
9bfe9334 BP |
1661 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1662 | if (protocol == OFPUTIL_P_NONE || !rconn_is_connected(ofconn->rconn) | |
a2b53dec BP |
1663 | || ofconn->controller_id != am->controller_id |
1664 | || !ofconn_receives_async_msg(ofconn, am->oam, | |
4d617a87 | 1665 | am->pin.up.base.reason)) { |
9bfe9334 | 1666 | continue; |
19a87e36 | 1667 | } |
9bfe9334 | 1668 | |
77ab5fd2 | 1669 | struct ofpbuf *msg = ofputil_encode_packet_in_private( |
c184807c | 1670 | &am->pin.up, protocol, ofconn->packet_in_format); |
9bfe9334 BP |
1671 | |
1672 | struct ovs_list txq; | |
4d617a87 BP |
1673 | bool is_miss = (am->pin.up.base.reason == OFPR_NO_MATCH || |
1674 | am->pin.up.base.reason == OFPR_EXPLICIT_MISS || | |
1675 | am->pin.up.base.reason == OFPR_IMPLICIT_MISS); | |
9bfe9334 | 1676 | pinsched_send(ofconn->schedulers[is_miss], |
4d617a87 | 1677 | am->pin.up.base.flow_metadata.flow.in_port.ofp_port, |
a2b53dec | 1678 | msg, &txq); |
9bfe9334 | 1679 | do_send_packet_ins(ofconn, &txq); |
19a87e36 | 1680 | } |
19a87e36 BP |
1681 | } |
1682 | ||
19a87e36 | 1683 | static void |
ca6ba700 | 1684 | do_send_packet_ins(struct ofconn *ofconn, struct ovs_list *txq) |
19a87e36 | 1685 | { |
5f03c983 | 1686 | struct ofpbuf *pin; |
19a87e36 | 1687 | |
5f03c983 | 1688 | LIST_FOR_EACH_POP (pin, list_node, txq) { |
e95f1d01 | 1689 | if (rconn_send_with_limit(ofconn->rconn, pin, |
3dabc687 DC |
1690 | ofconn->packet_in_counter, |
1691 | ofconn->packet_in_queue_size) == EAGAIN) { | |
7ed58d4a | 1692 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(5, 5); |
e95f1d01 | 1693 | |
7ed58d4a | 1694 | VLOG_INFO_RL(&rll, "%s: dropping packet-in due to queue overflow", |
e95f1d01 BP |
1695 | rconn_get_name(ofconn->rconn)); |
1696 | } | |
a6f75961 | 1697 | } |
19a87e36 | 1698 | } |
19a87e36 BP |
1699 | \f |
1700 | /* Fail-open settings. */ | |
1701 | ||
1702 | /* Returns the failure handling mode (OFPROTO_FAIL_SECURE or | |
1703 | * OFPROTO_FAIL_STANDALONE) for 'mgr'. */ | |
1704 | enum ofproto_fail_mode | |
1705 | connmgr_get_fail_mode(const struct connmgr *mgr) | |
1706 | { | |
1707 | return mgr->fail_mode; | |
1708 | } | |
1709 | ||
1710 | /* Sets the failure handling mode for 'mgr' to 'fail_mode' (either | |
1711 | * OFPROTO_FAIL_SECURE or OFPROTO_FAIL_STANDALONE). */ | |
1712 | void | |
1713 | connmgr_set_fail_mode(struct connmgr *mgr, enum ofproto_fail_mode fail_mode) | |
1714 | { | |
08fd19f0 BP |
1715 | if (mgr->fail_mode != fail_mode) { |
1716 | mgr->fail_mode = fail_mode; | |
1717 | update_fail_open(mgr); | |
1718 | if (!connmgr_has_controllers(mgr)) { | |
1719 | ofproto_flush_flows(mgr->ofproto); | |
1720 | } | |
1721 | } | |
19a87e36 BP |
1722 | } |
1723 | \f | |
1724 | /* Fail-open implementation. */ | |
1725 | ||
1726 | /* Returns the longest probe interval among the primary controllers configured | |
1727 | * on 'mgr'. Returns 0 if there are no primary controllers. */ | |
1728 | int | |
1729 | connmgr_get_max_probe_interval(const struct connmgr *mgr) | |
1730 | { | |
da0158d1 | 1731 | int max_probe_interval = 0; |
19a87e36 | 1732 | |
a0baa7df BP |
1733 | struct ofservice *ofservice; |
1734 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
1735 | if (ofservice->type == OFCONN_PRIMARY) { | |
1736 | int probe_interval = ofservice->s.probe_interval; | |
1737 | max_probe_interval = MAX(max_probe_interval, probe_interval); | |
1738 | } | |
19a87e36 BP |
1739 | } |
1740 | return max_probe_interval; | |
1741 | } | |
1742 | ||
c66be90b BP |
1743 | /* Returns the number of seconds for which all of 'mgr's active, primary |
1744 | * controllers have been disconnected. Returns 0 if 'mgr' has no active, | |
1745 | * primary controllers. */ | |
19a87e36 BP |
1746 | int |
1747 | connmgr_failure_duration(const struct connmgr *mgr) | |
1748 | { | |
da0158d1 BP |
1749 | int min_failure_duration = INT_MAX; |
1750 | ||
a0baa7df BP |
1751 | struct ofservice *ofservice; |
1752 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
c66be90b | 1753 | if (ofservice->s.type == OFCONN_PRIMARY && ofservice->rconn) { |
a0baa7df BP |
1754 | int failure_duration = rconn_failure_duration(ofservice->rconn); |
1755 | min_failure_duration = MIN(min_failure_duration, failure_duration); | |
1756 | } | |
19a87e36 | 1757 | } |
a0baa7df BP |
1758 | |
1759 | return min_failure_duration != INT_MAX ? min_failure_duration : 0; | |
19a87e36 BP |
1760 | } |
1761 | ||
1762 | /* Returns true if at least one primary controller is connected (regardless of | |
1763 | * whether those controllers are believed to have authenticated and accepted | |
1764 | * this switch), false if none of them are connected. */ | |
1765 | bool | |
1766 | connmgr_is_any_controller_connected(const struct connmgr *mgr) | |
1767 | { | |
a0baa7df BP |
1768 | struct ofservice *ofservice; |
1769 | HMAP_FOR_EACH (ofservice, hmap_node, &mgr->services) { | |
c66be90b BP |
1770 | if (ofservice->s.type == OFCONN_PRIMARY |
1771 | && !ovs_list_is_empty(&ofservice->conns)) { | |
19a87e36 BP |
1772 | return true; |
1773 | } | |
1774 | } | |
1775 | return false; | |
1776 | } | |
1777 | ||
1778 | /* Returns true if at least one primary controller is believed to have | |
1779 | * authenticated and accepted this switch, false otherwise. */ | |
1780 | bool | |
1781 | connmgr_is_any_controller_admitted(const struct connmgr *mgr) | |
1782 | { | |
1783 | const struct ofconn *ofconn; | |
1784 | ||
a0baa7df BP |
1785 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
1786 | if (ofconn->type == OFCONN_PRIMARY | |
1787 | && rconn_is_admitted(ofconn->rconn)) { | |
19a87e36 BP |
1788 | return true; |
1789 | } | |
1790 | } | |
1791 | return false; | |
1792 | } | |
19a87e36 BP |
1793 | \f |
1794 | /* In-band configuration. */ | |
1795 | ||
1796 | static bool any_extras_changed(const struct connmgr *, | |
1797 | const struct sockaddr_in *extras, size_t n); | |
1798 | ||
1799 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'mgr''s | |
1800 | * in-band control should guarantee access, in the same way that in-band | |
1801 | * control guarantees access to OpenFlow controllers. */ | |
1802 | void | |
1803 | connmgr_set_extra_in_band_remotes(struct connmgr *mgr, | |
1804 | const struct sockaddr_in *extras, size_t n) | |
1805 | { | |
1806 | if (!any_extras_changed(mgr, extras, n)) { | |
1807 | return; | |
1808 | } | |
1809 | ||
1810 | free(mgr->extra_in_band_remotes); | |
1811 | mgr->n_extra_remotes = n; | |
1812 | mgr->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras); | |
1813 | ||
1814 | update_in_band_remotes(mgr); | |
1815 | } | |
1816 | ||
1817 | /* Sets the OpenFlow queue used by flows set up by in-band control on | |
1818 | * 'mgr' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
1819 | * flows will use the default queue. */ | |
1820 | void | |
1821 | connmgr_set_in_band_queue(struct connmgr *mgr, int queue_id) | |
1822 | { | |
1823 | if (queue_id != mgr->in_band_queue) { | |
1824 | mgr->in_band_queue = queue_id; | |
1825 | update_in_band_remotes(mgr); | |
1826 | } | |
1827 | } | |
1828 | ||
1829 | static bool | |
1830 | any_extras_changed(const struct connmgr *mgr, | |
1831 | const struct sockaddr_in *extras, size_t n) | |
1832 | { | |
19a87e36 BP |
1833 | if (n != mgr->n_extra_remotes) { |
1834 | return true; | |
1835 | } | |
1836 | ||
da0158d1 | 1837 | for (size_t i = 0; i < n; i++) { |
19a87e36 BP |
1838 | const struct sockaddr_in *old = &mgr->extra_in_band_remotes[i]; |
1839 | const struct sockaddr_in *new = &extras[i]; | |
1840 | ||
1841 | if (old->sin_addr.s_addr != new->sin_addr.s_addr || | |
1842 | old->sin_port != new->sin_port) { | |
1843 | return true; | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | return false; | |
1848 | } | |
1849 | \f | |
1850 | /* In-band implementation. */ | |
1851 | ||
1852 | bool | |
f7f1ea29 | 1853 | connmgr_has_in_band(struct connmgr *mgr) |
19a87e36 | 1854 | { |
f7f1ea29 | 1855 | return mgr->in_band != NULL; |
19a87e36 BP |
1856 | } |
1857 | \f | |
1858 | /* Fail-open and in-band implementation. */ | |
1859 | ||
1860 | /* Called by 'ofproto' after all flows have been flushed, to allow fail-open | |
7ee20df1 BP |
1861 | * and standalone mode to re-create their flows. |
1862 | * | |
1863 | * In-band control has more sophisticated code that manages flows itself. */ | |
19a87e36 BP |
1864 | void |
1865 | connmgr_flushed(struct connmgr *mgr) | |
15aaf599 | 1866 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 1867 | { |
19a87e36 BP |
1868 | if (mgr->fail_open) { |
1869 | fail_open_flushed(mgr->fail_open); | |
1870 | } | |
08fd19f0 BP |
1871 | |
1872 | /* If there are no controllers and we're in standalone mode, set up a flow | |
1873 | * that matches every packet and directs them to OFPP_NORMAL (which goes to | |
1874 | * us). Otherwise, the switch is in secure mode and we won't pass any | |
1875 | * traffic until a controller has been defined and it tells us to do so. */ | |
1876 | if (!connmgr_has_controllers(mgr) | |
1877 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
f25d0cf3 | 1878 | struct ofpbuf ofpacts; |
81a76618 | 1879 | struct match match; |
08fd19f0 | 1880 | |
024d93f6 | 1881 | ofpbuf_init(&ofpacts, sizeof(struct ofpact_output)); |
f25d0cf3 | 1882 | ofpact_put_OUTPUT(&ofpacts)->port = OFPP_NORMAL; |
f25d0cf3 | 1883 | |
81a76618 | 1884 | match_init_catchall(&match); |
6fd6ed71 PS |
1885 | ofproto_add_flow(mgr->ofproto, &match, 0, ofpacts.data, |
1886 | ofpacts.size); | |
f25d0cf3 BP |
1887 | |
1888 | ofpbuf_uninit(&ofpacts); | |
08fd19f0 | 1889 | } |
19a87e36 | 1890 | } |
3fbbcba7 BP |
1891 | |
1892 | /* Returns the number of hidden rules created by the in-band and fail-open | |
1893 | * implementations in table 0. (Subtracting this count from the number of | |
d79e3d70 | 1894 | * rules in the table 0 classifier, as maintained in struct oftable, yields |
3fbbcba7 BP |
1895 | * the number of flows that OVS should report via OpenFlow for table 0.) */ |
1896 | int | |
1897 | connmgr_count_hidden_rules(const struct connmgr *mgr) | |
1898 | { | |
1899 | int n_hidden = 0; | |
1900 | if (mgr->in_band) { | |
1901 | n_hidden += in_band_count_rules(mgr->in_band); | |
1902 | } | |
1903 | if (mgr->fail_open) { | |
1904 | n_hidden += fail_open_count_rules(mgr->fail_open); | |
1905 | } | |
1906 | return n_hidden; | |
1907 | } | |
19a87e36 BP |
1908 | \f |
1909 | /* Creates a new ofservice for 'target' in 'mgr'. Returns 0 if successful, | |
1910 | * otherwise a positive errno value. | |
1911 | * | |
1912 | * ofservice_reconfigure() must be called to fully configure the new | |
1913 | * ofservice. */ | |
a0baa7df | 1914 | static void |
00401ef0 | 1915 | ofservice_create(struct connmgr *mgr, const char *target, |
a0baa7df BP |
1916 | const struct ofproto_controller *c) |
1917 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 1918 | { |
a0baa7df BP |
1919 | struct pvconn *pvconn = NULL; |
1920 | struct rconn *rconn = NULL; | |
1921 | if (!vconn_verify_name(target)) { | |
1922 | char *name = ofconn_make_name(mgr, target); | |
1923 | rconn = rconn_create(5, 8, c->dscp, c->allowed_versions); | |
1924 | rconn_connect(rconn, target, name); | |
1925 | free(name); | |
1926 | } else if (!pvconn_verify_name(target)) { | |
1927 | int error = pvconn_open(target, c->allowed_versions, c->dscp, &pvconn); | |
1928 | if (error) { | |
1929 | return; | |
1930 | } | |
1931 | } else { | |
1932 | VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"", | |
1933 | mgr->name, target); | |
1934 | return; | |
19a87e36 BP |
1935 | } |
1936 | ||
da0158d1 | 1937 | struct ofservice *ofservice = xzalloc(sizeof *ofservice); |
a0baa7df BP |
1938 | hmap_insert(&mgr->services, &ofservice->hmap_node, hash_string(target, 0)); |
1939 | ofservice->connmgr = mgr; | |
1940 | ofservice->target = xstrdup(target); | |
1941 | ovs_list_init(&ofservice->conns); | |
c66be90b | 1942 | ofservice->type = c->type; |
a0baa7df | 1943 | ofservice->rconn = rconn; |
19a87e36 | 1944 | ofservice->pvconn = pvconn; |
a0baa7df BP |
1945 | ofservice->s = *c; |
1946 | ofservice_reconfigure(ofservice, c); | |
19a87e36 | 1947 | |
a0baa7df BP |
1948 | VLOG_INFO("%s: added %s controller \"%s\"", |
1949 | mgr->name, ofconn_type_to_string(ofservice->type), target); | |
19a87e36 BP |
1950 | } |
1951 | ||
1952 | static void | |
a0baa7df BP |
1953 | ofservice_close_all(struct ofservice *ofservice) |
1954 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 1955 | { |
a0baa7df BP |
1956 | struct ofconn *ofconn, *next; |
1957 | LIST_FOR_EACH_SAFE (ofconn, next, ofservice_node, &ofservice->conns) { | |
1958 | ofconn_destroy(ofconn); | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | static void | |
1963 | ofservice_destroy(struct ofservice *ofservice) | |
1964 | OVS_REQUIRES(ofproto_mutex) | |
1965 | { | |
1966 | if (!ofservice) { | |
1967 | return; | |
1968 | } | |
1969 | ||
1970 | ofservice_close_all(ofservice); | |
1971 | ||
1972 | hmap_remove(&ofservice->connmgr->services, &ofservice->hmap_node); | |
1973 | free(ofservice->target); | |
1974 | if (ofservice->pvconn) { | |
1975 | pvconn_close(ofservice->pvconn); | |
1976 | } | |
1977 | if (ofservice->rconn) { | |
1978 | rconn_destroy(ofservice->rconn); | |
1979 | } | |
19a87e36 BP |
1980 | free(ofservice); |
1981 | } | |
1982 | ||
a0baa7df BP |
1983 | static void |
1984 | ofservice_run(struct ofservice *ofservice) | |
1985 | { | |
1986 | if (ofservice->pvconn) { | |
1987 | struct vconn *vconn; | |
1988 | int retval = pvconn_accept(ofservice->pvconn, &vconn); | |
1989 | if (!retval) { | |
1990 | /* Passing default value for creation of the rconn */ | |
1991 | struct rconn *rconn = rconn_create( | |
1992 | ofservice->s.probe_interval, ofservice->s.max_backoff, | |
1993 | ofservice->s.dscp, ofservice->s.allowed_versions); | |
1994 | char *name = ofconn_make_name(ofservice->connmgr, | |
1995 | vconn_get_name(vconn)); | |
1996 | rconn_connect_unreliably(rconn, vconn, name); | |
1997 | free(name); | |
1998 | ||
c66be90b | 1999 | ofconn_create(ofservice, rconn, &ofservice->s); |
a0baa7df BP |
2000 | } else if (retval != EAGAIN) { |
2001 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); | |
2002 | } | |
2003 | } else { | |
2004 | rconn_run(ofservice->rconn); | |
2005 | ||
2006 | bool connected = rconn_is_connected(ofservice->rconn); | |
2007 | bool has_ofconn = !ovs_list_is_empty(&ofservice->conns); | |
2008 | if (connected && !has_ofconn) { | |
c66be90b | 2009 | ofconn_create(ofservice, ofservice->rconn, &ofservice->s); |
a0baa7df BP |
2010 | } |
2011 | } | |
2012 | } | |
2013 | ||
2014 | static void | |
2015 | ofservice_wait(struct ofservice *ofservice) | |
2016 | { | |
2017 | if (ofservice->pvconn) { | |
2018 | pvconn_wait(ofservice->pvconn); | |
2019 | } | |
2020 | } | |
2021 | ||
9688b4c7 | 2022 | static int |
19a87e36 | 2023 | ofservice_reconfigure(struct ofservice *ofservice, |
a0baa7df BP |
2024 | const struct ofproto_controller *settings) |
2025 | OVS_REQUIRES(ofproto_mutex) | |
19a87e36 | 2026 | { |
9688b4c7 AC |
2027 | /* If the allowed OpenFlow versions change, a full cleanup is needed |
2028 | * for the ofservice and connections. */ | |
a0baa7df | 2029 | if (ofservice->s.allowed_versions != settings->allowed_versions) { |
9688b4c7 | 2030 | return -EINVAL; |
a0baa7df BP |
2031 | } |
2032 | ||
2033 | ofservice->s = *settings; | |
2034 | ||
2035 | struct ofconn *ofconn; | |
2036 | LIST_FOR_EACH (ofconn, ofservice_node, &ofservice->conns) { | |
2037 | ofconn_reconfigure(ofconn, settings); | |
2038 | } | |
9688b4c7 AC |
2039 | |
2040 | return 0; | |
19a87e36 BP |
2041 | } |
2042 | ||
2043 | /* Finds and returns the ofservice within 'mgr' that has the given | |
2044 | * 'target', or a null pointer if none exists. */ | |
2045 | static struct ofservice * | |
2046 | ofservice_lookup(struct connmgr *mgr, const char *target) | |
2047 | { | |
2048 | struct ofservice *ofservice; | |
2049 | ||
a0baa7df | 2050 | HMAP_FOR_EACH_WITH_HASH (ofservice, hmap_node, hash_string(target, 0), |
19a87e36 | 2051 | &mgr->services) { |
a0baa7df | 2052 | if (!strcmp(ofservice->target, target)) { |
19a87e36 BP |
2053 | return ofservice; |
2054 | } | |
2055 | } | |
2056 | return NULL; | |
2057 | } | |
2b07c8b1 BP |
2058 | \f |
2059 | /* Flow monitors (NXST_FLOW_MONITOR). */ | |
2060 | ||
2061 | /* A counter incremented when something significant happens to an OpenFlow | |
2062 | * rule. | |
2063 | * | |
2064 | * - When a rule is added, its 'add_seqno' and 'modify_seqno' are set to | |
2065 | * the current value (which is then incremented). | |
2066 | * | |
2067 | * - When a rule is modified, its 'modify_seqno' is set to the current | |
2068 | * value (which is then incremented). | |
2069 | * | |
2070 | * Thus, by comparing an old value of monitor_seqno against a rule's | |
2071 | * 'add_seqno', one can tell whether the rule was added before or after the old | |
2072 | * value was read, and similarly for 'modify_seqno'. | |
2073 | * | |
2074 | * 32 bits should normally be sufficient (and would be nice, to save space in | |
2075 | * each rule) but then we'd have to have some special cases for wraparound. | |
2076 | * | |
2077 | * We initialize monitor_seqno to 1 to allow 0 to be used as an invalid | |
2078 | * value. */ | |
2079 | static uint64_t monitor_seqno = 1; | |
2080 | ||
2081 | COVERAGE_DEFINE(ofmonitor_pause); | |
2082 | COVERAGE_DEFINE(ofmonitor_resume); | |
2083 | ||
2084 | enum ofperr | |
2085 | ofmonitor_create(const struct ofputil_flow_monitor_request *request, | |
2086 | struct ofconn *ofconn, struct ofmonitor **monitorp) | |
4cd1bc9d | 2087 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2088 | { |
2b07c8b1 BP |
2089 | *monitorp = NULL; |
2090 | ||
da0158d1 | 2091 | struct ofmonitor *m = ofmonitor_lookup(ofconn, request->id); |
2b07c8b1 | 2092 | if (m) { |
04f9f286 | 2093 | return OFPERR_OFPMOFC_MONITOR_EXISTS; |
2b07c8b1 BP |
2094 | } |
2095 | ||
2096 | m = xmalloc(sizeof *m); | |
2097 | m->ofconn = ofconn; | |
2098 | hmap_insert(&ofconn->monitors, &m->ofconn_node, hash_int(request->id, 0)); | |
2099 | m->id = request->id; | |
2100 | m->flags = request->flags; | |
2101 | m->out_port = request->out_port; | |
2102 | m->table_id = request->table_id; | |
5cb7a798 | 2103 | minimatch_init(&m->match, &request->match); |
2b07c8b1 BP |
2104 | |
2105 | *monitorp = m; | |
2106 | return 0; | |
2107 | } | |
2108 | ||
2109 | struct ofmonitor * | |
2110 | ofmonitor_lookup(struct ofconn *ofconn, uint32_t id) | |
4cd1bc9d | 2111 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2112 | { |
2113 | struct ofmonitor *m; | |
2114 | ||
2115 | HMAP_FOR_EACH_IN_BUCKET (m, ofconn_node, hash_int(id, 0), | |
2116 | &ofconn->monitors) { | |
2117 | if (m->id == id) { | |
2118 | return m; | |
2119 | } | |
2120 | } | |
2121 | return NULL; | |
2122 | } | |
2123 | ||
2124 | void | |
2125 | ofmonitor_destroy(struct ofmonitor *m) | |
4cd1bc9d | 2126 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2127 | { |
2128 | if (m) { | |
5684eb74 | 2129 | minimatch_destroy(&m->match); |
2b07c8b1 BP |
2130 | hmap_remove(&m->ofconn->monitors, &m->ofconn_node); |
2131 | free(m); | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | void | |
2136 | ofmonitor_report(struct connmgr *mgr, struct rule *rule, | |
2137 | enum nx_flow_update_event event, | |
2138 | enum ofp_flow_removed_reason reason, | |
cdbdeeda SH |
2139 | const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid, |
2140 | const struct rule_actions *old_actions) | |
15aaf599 | 2141 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2142 | { |
834fe5cb BP |
2143 | if (rule_is_hidden(rule)) { |
2144 | return; | |
2145 | } | |
2146 | ||
da0158d1 | 2147 | enum nx_flow_monitor_flags update; |
2b07c8b1 BP |
2148 | switch (event) { |
2149 | case NXFME_ADDED: | |
2150 | update = NXFMF_ADD; | |
2151 | rule->add_seqno = rule->modify_seqno = monitor_seqno++; | |
2152 | break; | |
2153 | ||
2154 | case NXFME_DELETED: | |
2155 | update = NXFMF_DELETE; | |
2156 | break; | |
2157 | ||
2158 | case NXFME_MODIFIED: | |
2159 | update = NXFMF_MODIFY; | |
2160 | rule->modify_seqno = monitor_seqno++; | |
2161 | break; | |
2162 | ||
2163 | default: | |
2164 | case NXFME_ABBREV: | |
428b2edd | 2165 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2166 | } |
2167 | ||
da0158d1 | 2168 | struct ofconn *ofconn; |
a0baa7df | 2169 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
2b07c8b1 BP |
2170 | if (ofconn->monitor_paused) { |
2171 | /* Only send NXFME_DELETED notifications for flows that were added | |
2172 | * before we paused. */ | |
2173 | if (event != NXFME_DELETED | |
2174 | || rule->add_seqno > ofconn->monitor_paused) { | |
2175 | continue; | |
2176 | } | |
2177 | } | |
2178 | ||
da0158d1 BP |
2179 | enum nx_flow_monitor_flags flags = 0; |
2180 | struct ofmonitor *m; | |
2b07c8b1 BP |
2181 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2182 | if (m->flags & update | |
2183 | && (m->table_id == 0xff || m->table_id == rule->table_id) | |
cdbdeeda SH |
2184 | && (ofproto_rule_has_out_port(rule, m->out_port) |
2185 | || (old_actions | |
2186 | && ofpacts_output_to_port(old_actions->ofpacts, | |
2187 | old_actions->ofpacts_len, | |
2188 | m->out_port))) | |
2b07c8b1 BP |
2189 | && cls_rule_is_loose_match(&rule->cr, &m->match)) { |
2190 | flags |= m->flags; | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | if (flags) { | |
417e7e66 | 2195 | if (ovs_list_is_empty(&ofconn->updates)) { |
2b07c8b1 BP |
2196 | ofputil_start_flow_update(&ofconn->updates); |
2197 | ofconn->sent_abbrev_update = false; | |
2198 | } | |
2199 | ||
200d6ac4 SH |
2200 | if (flags & NXFMF_OWN || ofconn != abbrev_ofconn |
2201 | || ofconn->monitor_paused) { | |
2b07c8b1 BP |
2202 | struct ofputil_flow_update fu; |
2203 | ||
2204 | fu.event = event; | |
2205 | fu.reason = event == NXFME_DELETED ? reason : 0; | |
2b07c8b1 BP |
2206 | fu.table_id = rule->table_id; |
2207 | fu.cookie = rule->flow_cookie; | |
140f36ba | 2208 | minimatch_expand(&rule->cr.match, &fu.match); |
6b140a4e | 2209 | fu.priority = rule->cr.priority; |
a3779dbc | 2210 | |
d10976b7 | 2211 | ovs_mutex_lock(&rule->mutex); |
a3779dbc EJ |
2212 | fu.idle_timeout = rule->idle_timeout; |
2213 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 2214 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 2215 | |
2b07c8b1 | 2216 | if (flags & NXFMF_ACTIONS) { |
da0158d1 BP |
2217 | const struct rule_actions *actions |
2218 | = rule_get_actions(rule); | |
06a0f3e2 BP |
2219 | fu.ofpacts = actions->ofpacts; |
2220 | fu.ofpacts_len = actions->ofpacts_len; | |
2b07c8b1 BP |
2221 | } else { |
2222 | fu.ofpacts = NULL; | |
2223 | fu.ofpacts_len = 0; | |
2224 | } | |
140f36ba DDP |
2225 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2226 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2227 | } else if (!ofconn->sent_abbrev_update) { |
2228 | struct ofputil_flow_update fu; | |
2229 | ||
2230 | fu.event = NXFME_ABBREV; | |
2231 | fu.xid = abbrev_xid; | |
140f36ba DDP |
2232 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2233 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2234 | |
2235 | ofconn->sent_abbrev_update = true; | |
2236 | } | |
2237 | } | |
2238 | } | |
2239 | } | |
2240 | ||
2241 | void | |
2242 | ofmonitor_flush(struct connmgr *mgr) | |
4cd1bc9d | 2243 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2244 | { |
2245 | struct ofconn *ofconn; | |
2246 | ||
a0baa7df | 2247 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
6d91e84c | 2248 | struct rconn_packet_counter *counter = ofconn->monitor_counter; |
2b07c8b1 | 2249 | |
6d91e84c | 2250 | struct ofpbuf *msg; |
5f03c983 | 2251 | LIST_FOR_EACH_POP (msg, list_node, &ofconn->updates) { |
6d91e84c BP |
2252 | ofconn_send(ofconn, msg, counter); |
2253 | } | |
2254 | ||
2255 | if (!ofconn->monitor_paused | |
2256 | && rconn_packet_counter_n_bytes(counter) > 128 * 1024) { | |
6d91e84c BP |
2257 | COVERAGE_INC(ofmonitor_pause); |
2258 | ofconn->monitor_paused = monitor_seqno++; | |
da0158d1 BP |
2259 | struct ofpbuf *pause = ofpraw_alloc_xid( |
2260 | OFPRAW_NXT_FLOW_MONITOR_PAUSED, OFP10_VERSION, htonl(0), 0); | |
6d91e84c | 2261 | ofconn_send(ofconn, pause, counter); |
2b07c8b1 BP |
2262 | } |
2263 | } | |
2264 | } | |
2265 | ||
2266 | static void | |
2267 | ofmonitor_resume(struct ofconn *ofconn) | |
4cd1bc9d | 2268 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2269 | { |
a8e547c1 | 2270 | struct rule_collection rules; |
a8e547c1 | 2271 | rule_collection_init(&rules); |
da0158d1 BP |
2272 | |
2273 | struct ofmonitor *m; | |
2b07c8b1 BP |
2274 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2275 | ofmonitor_collect_resume_rules(m, ofconn->monitor_paused, &rules); | |
2276 | } | |
2277 | ||
da0158d1 | 2278 | struct ovs_list msgs = OVS_LIST_INITIALIZER(&msgs); |
2b07c8b1 BP |
2279 | ofmonitor_compose_refresh_updates(&rules, &msgs); |
2280 | ||
da0158d1 BP |
2281 | struct ofpbuf *resumed = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_RESUMED, |
2282 | OFP10_VERSION, htonl(0), 0); | |
417e7e66 | 2283 | ovs_list_push_back(&msgs, &resumed->list_node); |
2b07c8b1 BP |
2284 | ofconn_send_replies(ofconn, &msgs); |
2285 | ||
2286 | ofconn->monitor_paused = 0; | |
2287 | } | |
2288 | ||
4cd1bc9d BP |
2289 | static bool |
2290 | ofmonitor_may_resume(const struct ofconn *ofconn) | |
2291 | OVS_REQUIRES(ofproto_mutex) | |
2292 | { | |
2293 | return (ofconn->monitor_paused != 0 | |
2294 | && !rconn_packet_counter_n_packets(ofconn->monitor_counter)); | |
2295 | } | |
2296 | ||
2b07c8b1 BP |
2297 | static void |
2298 | ofmonitor_run(struct connmgr *mgr) | |
2299 | { | |
4cd1bc9d | 2300 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2301 | struct ofconn *ofconn; |
a0baa7df | 2302 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
4cd1bc9d | 2303 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2304 | COVERAGE_INC(ofmonitor_resume); |
2305 | ofmonitor_resume(ofconn); | |
2306 | } | |
2307 | } | |
4cd1bc9d | 2308 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 BP |
2309 | } |
2310 | ||
2311 | static void | |
2312 | ofmonitor_wait(struct connmgr *mgr) | |
2313 | { | |
4cd1bc9d | 2314 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2315 | struct ofconn *ofconn; |
a0baa7df | 2316 | LIST_FOR_EACH (ofconn, connmgr_node, &mgr->conns) { |
4cd1bc9d | 2317 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2318 | poll_immediate_wake(); |
2319 | } | |
2320 | } | |
4cd1bc9d | 2321 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 2322 | } |
a2b53dec BP |
2323 | |
2324 | void | |
2325 | ofproto_async_msg_free(struct ofproto_async_msg *am) | |
2326 | { | |
4d617a87 BP |
2327 | free(am->pin.up.base.packet); |
2328 | free(am->pin.up.base.userdata); | |
77ab5fd2 BP |
2329 | free(am->pin.up.stack); |
2330 | free(am->pin.up.actions); | |
2331 | free(am->pin.up.action_set); | |
a2b53dec BP |
2332 | free(am); |
2333 | } |