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19a87e36 | 1 | /* |
a930d4c5 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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 { |
c4b31872 BP |
60 | /* Configuration that persists from one connection to the next. */ |
61 | ||
ca6ba700 | 62 | struct ovs_list node; /* In struct connmgr's "all_conns" list. */ |
c4b31872 BP |
63 | struct hmap_node hmap_node; /* In struct connmgr's "controllers" map. */ |
64 | ||
65 | struct connmgr *connmgr; /* Connection's manager. */ | |
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? */ |
9886b662 | 69 | bool enable_async_msgs; /* Initially enable async messages? */ |
b9320e51 | 70 | bool want_packet_in_on_miss; |
c4b31872 BP |
71 | |
72 | /* State that should be cleared from one connection to the next. */ | |
73 | ||
74 | /* OpenFlow state. */ | |
f4f1ea7e | 75 | enum ofp12_controller_role role; /* Role. */ |
27527aa0 | 76 | enum ofputil_protocol protocol; /* Current protocol variant. */ |
d8790c08 | 77 | enum ofputil_packet_in_format packet_in_format; |
19a87e36 BP |
78 | |
79 | /* OFPT_PACKET_IN related data. */ | |
80 | struct rconn_packet_counter *packet_in_counter; /* # queued on 'rconn'. */ | |
81 | #define N_SCHEDULERS 2 | |
82 | struct pinsched *schedulers[N_SCHEDULERS]; | |
19a87e36 | 83 | int miss_send_len; /* Bytes to send of buffered packets. */ |
a7349929 | 84 | uint16_t controller_id; /* Connection controller ID. */ |
19a87e36 BP |
85 | |
86 | /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow | |
87 | * requests, and the maximum number before we stop reading OpenFlow | |
88 | * requests. */ | |
89 | #define OFCONN_REPLY_MAX 100 | |
90 | struct rconn_packet_counter *reply_counter; | |
80d5aefd | 91 | |
a930d4c5 | 92 | /* Asynchronous message configuration in each possible role. |
80d5aefd BP |
93 | * |
94 | * A 1-bit enables sending an asynchronous message for one possible reason | |
95 | * that the message might be generated, a 0-bit disables it. */ | |
a930d4c5 | 96 | struct ofputil_async_cfg *async_cfg; |
2b07c8b1 | 97 | |
696d1bcf BP |
98 | /* Flow table operation logging. */ |
99 | int n_add, n_delete, n_modify; /* Number of unreported ops of each kind. */ | |
100 | long long int first_op, last_op; /* Range of times for unreported ops. */ | |
101 | long long int next_op_report; /* Time to report ops, or LLONG_MAX. */ | |
102 | long long int op_backoff; /* Earliest time to report ops again. */ | |
103 | ||
fd4b7a0e BP |
104 | /* Reassembly of multipart requests. */ |
105 | struct hmap assembler; | |
106 | ||
4cd1bc9d BP |
107 | /* Flow monitors (e.g. NXST_FLOW_MONITOR). */ |
108 | ||
109 | /* Configuration. Contains "struct ofmonitor"s. */ | |
110 | struct hmap monitors OVS_GUARDED_BY(ofproto_mutex); | |
111 | ||
112 | /* Flow control. | |
113 | * | |
114 | * When too many flow monitor notifications back up in the transmit buffer, | |
115 | * we pause the transmission of further notifications. These members track | |
116 | * the flow control state. | |
117 | * | |
118 | * When notifications are flowing, 'monitor_paused' is 0. When | |
119 | * notifications are paused, 'monitor_paused' is the value of | |
120 | * 'monitor_seqno' at the point we paused. | |
121 | * | |
122 | * 'monitor_counter' counts the OpenFlow messages and bytes currently in | |
123 | * flight. This value growing too large triggers pausing. */ | |
124 | uint64_t monitor_paused OVS_GUARDED_BY(ofproto_mutex); | |
125 | struct rconn_packet_counter *monitor_counter OVS_GUARDED_BY(ofproto_mutex); | |
126 | ||
127 | /* State of monitors for a single ongoing flow_mod. | |
128 | * | |
129 | * 'updates' is a list of "struct ofpbuf"s that contain | |
130 | * NXST_FLOW_MONITOR_REPLY messages representing the changes made by the | |
131 | * current flow_mod. | |
132 | * | |
133 | * When 'updates' is nonempty, 'sent_abbrev_update' is true if 'updates' | |
134 | * contains an update event of type NXFME_ABBREV and false otherwise.. */ | |
ca6ba700 | 135 | struct ovs_list updates OVS_GUARDED_BY(ofproto_mutex); |
4cd1bc9d | 136 | bool sent_abbrev_update OVS_GUARDED_BY(ofproto_mutex); |
777af88d AC |
137 | |
138 | /* Active bundles. Contains "struct ofp_bundle"s. */ | |
139 | struct hmap bundles; | |
51bb26fa JR |
140 | long long int next_bundle_expiry_check; |
141 | }; | |
142 | ||
143 | /* vswitchd/ovs-vswitchd.8.in documents the value of BUNDLE_IDLE_LIFETIME in | |
144 | * seconds. That documentation must be kept in sync with the value below. */ | |
7fdd2082 FL |
145 | #define BUNDLE_EXPIRY_INTERVAL 1000 /* Check bundle expiry every 1 sec. */ |
146 | #define BUNDLE_IDLE_TIMEOUT_DEFAULT 10000 /* Expire idle bundles after | |
147 | * 10 seconds. */ | |
148 | ||
149 | static unsigned int bundle_idle_timeout = BUNDLE_IDLE_TIMEOUT_DEFAULT; | |
19a87e36 BP |
150 | |
151 | static struct ofconn *ofconn_create(struct connmgr *, struct rconn *, | |
3b0c6b56 BP |
152 | enum ofconn_type, bool enable_async_msgs) |
153 | OVS_REQUIRES(ofproto_mutex); | |
154 | static void ofconn_destroy(struct ofconn *) OVS_REQUIRES(ofproto_mutex); | |
155 | static void ofconn_flush(struct ofconn *) OVS_REQUIRES(ofproto_mutex); | |
19a87e36 BP |
156 | |
157 | static void ofconn_reconfigure(struct ofconn *, | |
158 | const struct ofproto_controller *); | |
159 | ||
160 | static void ofconn_run(struct ofconn *, | |
b20f4073 | 161 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 162 | const struct ovs_list *msgs)); |
b20f4073 | 163 | static void ofconn_wait(struct ofconn *); |
19a87e36 | 164 | |
696d1bcf BP |
165 | static void ofconn_log_flow_mods(struct ofconn *); |
166 | ||
19a87e36 BP |
167 | static const char *ofconn_get_target(const struct ofconn *); |
168 | static char *ofconn_make_name(const struct connmgr *, const char *target); | |
169 | ||
170 | static void ofconn_set_rate_limit(struct ofconn *, int rate, int burst); | |
171 | ||
19a87e36 BP |
172 | static void ofconn_send(const struct ofconn *, struct ofpbuf *, |
173 | struct rconn_packet_counter *); | |
174 | ||
ca6ba700 | 175 | static void do_send_packet_ins(struct ofconn *, struct ovs_list *txq); |
19a87e36 BP |
176 | |
177 | /* A listener for incoming OpenFlow "service" connections. */ | |
178 | struct ofservice { | |
179 | struct hmap_node node; /* In struct connmgr's "services" hmap. */ | |
180 | struct pvconn *pvconn; /* OpenFlow connection listener. */ | |
181 | ||
182 | /* These are not used by ofservice directly. They are settings for | |
183 | * accepted "struct ofconn"s from the pvconn. */ | |
184 | int probe_interval; /* Max idle time before probing, in seconds. */ | |
185 | int rate_limit; /* Max packet-in rate in packets per second. */ | |
186 | int burst_limit; /* Limit on accumulating packet credits. */ | |
9886b662 | 187 | bool enable_async_msgs; /* Initially enable async messages? */ |
f125905c | 188 | uint8_t dscp; /* DSCP Value for controller connection */ |
90ef0206 SH |
189 | uint32_t allowed_versions; /* OpenFlow protocol versions that may |
190 | * be negotiated for a session. */ | |
19a87e36 BP |
191 | }; |
192 | ||
193 | static void ofservice_reconfigure(struct ofservice *, | |
194 | const struct ofproto_controller *); | |
00401ef0 SH |
195 | static int ofservice_create(struct connmgr *mgr, const char *target, |
196 | uint32_t allowed_versions, uint8_t dscp); | |
19a87e36 BP |
197 | static void ofservice_destroy(struct connmgr *, struct ofservice *); |
198 | static struct ofservice *ofservice_lookup(struct connmgr *, | |
199 | const char *target); | |
200 | ||
201 | /* Connection manager for an OpenFlow switch. */ | |
202 | struct connmgr { | |
203 | struct ofproto *ofproto; | |
204 | char *name; | |
205 | char *local_port_name; | |
206 | ||
207 | /* OpenFlow connections. */ | |
ca6ba700 | 208 | struct hmap controllers; /* All OFCONN_PRIMARY controllers. */ |
25010c68 JR |
209 | struct ovs_list all_conns; /* All controllers. All modifications are |
210 | protected by ofproto_mutex, so that any | |
211 | traversals from other threads can be made | |
212 | safe by holding the ofproto_mutex. */ | |
6ea4776b JR |
213 | uint64_t master_election_id; /* monotonically increasing sequence number |
214 | * for master election */ | |
215 | bool master_election_id_defined; | |
19a87e36 BP |
216 | |
217 | /* OpenFlow listeners. */ | |
218 | struct hmap services; /* Contains "struct ofservice"s. */ | |
219 | struct pvconn **snoops; | |
220 | size_t n_snoops; | |
221 | ||
222 | /* Fail open. */ | |
223 | struct fail_open *fail_open; | |
224 | enum ofproto_fail_mode fail_mode; | |
225 | ||
226 | /* In-band control. */ | |
227 | struct in_band *in_band; | |
19a87e36 BP |
228 | struct sockaddr_in *extra_in_band_remotes; |
229 | size_t n_extra_remotes; | |
230 | int in_band_queue; | |
b9320e51 JR |
231 | |
232 | ATOMIC(int) want_packet_in_on_miss; /* Sum of ofconns' values. */ | |
19a87e36 BP |
233 | }; |
234 | ||
235 | static void update_in_band_remotes(struct connmgr *); | |
236 | static void add_snooper(struct connmgr *, struct vconn *); | |
2b07c8b1 BP |
237 | static void ofmonitor_run(struct connmgr *); |
238 | static void ofmonitor_wait(struct connmgr *); | |
19a87e36 BP |
239 | |
240 | /* Creates and returns a new connection manager owned by 'ofproto'. 'name' is | |
241 | * a name for the ofproto suitable for using in log messages. | |
242 | * 'local_port_name' is the name of the local port (OFPP_LOCAL) within | |
243 | * 'ofproto'. */ | |
244 | struct connmgr * | |
245 | connmgr_create(struct ofproto *ofproto, | |
246 | const char *name, const char *local_port_name) | |
247 | { | |
da0158d1 | 248 | struct connmgr *mgr = xmalloc(sizeof *mgr); |
19a87e36 BP |
249 | mgr->ofproto = ofproto; |
250 | mgr->name = xstrdup(name); | |
251 | mgr->local_port_name = xstrdup(local_port_name); | |
252 | ||
253 | hmap_init(&mgr->controllers); | |
417e7e66 | 254 | ovs_list_init(&mgr->all_conns); |
6ea4776b JR |
255 | mgr->master_election_id = 0; |
256 | mgr->master_election_id_defined = false; | |
19a87e36 BP |
257 | |
258 | hmap_init(&mgr->services); | |
259 | mgr->snoops = NULL; | |
260 | mgr->n_snoops = 0; | |
261 | ||
262 | mgr->fail_open = NULL; | |
263 | mgr->fail_mode = OFPROTO_FAIL_SECURE; | |
264 | ||
265 | mgr->in_band = NULL; | |
19a87e36 BP |
266 | mgr->extra_in_band_remotes = NULL; |
267 | mgr->n_extra_remotes = 0; | |
268 | mgr->in_band_queue = -1; | |
269 | ||
b9320e51 JR |
270 | atomic_init(&mgr->want_packet_in_on_miss, 0); |
271 | ||
19a87e36 BP |
272 | return mgr; |
273 | } | |
274 | ||
b9320e51 JR |
275 | /* The default "table-miss" behaviour for OpenFlow1.3+ is to drop the |
276 | * packet rather than to send the packet to the controller. | |
277 | * | |
278 | * This function maintains the count of pre-OpenFlow1.3 with controller_id 0, | |
279 | * as we assume these are the controllers that should receive "table-miss" | |
280 | * notifications. */ | |
281 | static void | |
282 | update_want_packet_in_on_miss(struct ofconn *ofconn) | |
283 | { | |
284 | /* We want a packet-in on miss when controller_id is zero and OpenFlow is | |
285 | * lower than version 1.3. */ | |
286 | enum ofputil_protocol p = ofconn->protocol; | |
287 | int new_want = (ofconn->controller_id == 0 && | |
288 | (p == OFPUTIL_P_NONE || | |
289 | ofputil_protocol_to_ofp_version(p) < OFP13_VERSION)); | |
290 | ||
291 | /* Update the setting and the count if necessary. */ | |
292 | int old_want = ofconn->want_packet_in_on_miss; | |
293 | if (old_want != new_want) { | |
294 | atomic_int *dst = &ofconn->connmgr->want_packet_in_on_miss; | |
295 | int count; | |
296 | atomic_read_relaxed(dst, &count); | |
297 | atomic_store_relaxed(dst, count - old_want + new_want); | |
298 | ||
299 | ofconn->want_packet_in_on_miss = new_want; | |
300 | } | |
301 | } | |
302 | ||
19a87e36 BP |
303 | /* Frees 'mgr' and all of its resources. */ |
304 | void | |
305 | connmgr_destroy(struct connmgr *mgr) | |
25010c68 | 306 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 307 | { |
19a87e36 BP |
308 | if (!mgr) { |
309 | return; | |
310 | } | |
311 | ||
da0158d1 | 312 | struct ofconn *ofconn, *next_ofconn; |
19a87e36 BP |
313 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) { |
314 | ofconn_destroy(ofconn); | |
315 | } | |
3b0c6b56 | 316 | |
19a87e36 BP |
317 | hmap_destroy(&mgr->controllers); |
318 | ||
da0158d1 | 319 | struct ofservice *ofservice, *next_ofservice; |
19a87e36 BP |
320 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, node, &mgr->services) { |
321 | ofservice_destroy(mgr, ofservice); | |
322 | } | |
323 | hmap_destroy(&mgr->services); | |
324 | ||
da0158d1 | 325 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
19a87e36 BP |
326 | pvconn_close(mgr->snoops[i]); |
327 | } | |
328 | free(mgr->snoops); | |
329 | ||
330 | fail_open_destroy(mgr->fail_open); | |
331 | mgr->fail_open = NULL; | |
332 | ||
333 | in_band_destroy(mgr->in_band); | |
334 | mgr->in_band = NULL; | |
335 | free(mgr->extra_in_band_remotes); | |
336 | free(mgr->name); | |
337 | free(mgr->local_port_name); | |
338 | ||
339 | free(mgr); | |
340 | } | |
341 | ||
b20f4073 BP |
342 | /* Does all of the periodic maintenance required by 'mgr'. Calls |
343 | * 'handle_openflow' for each message received on an OpenFlow connection, | |
344 | * passing along the OpenFlow connection itself and the message that was sent. | |
345 | * 'handle_openflow' must not modify or free the message. */ | |
19a87e36 BP |
346 | void |
347 | connmgr_run(struct connmgr *mgr, | |
b20f4073 | 348 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 349 | const struct ovs_list *msgs)) |
15aaf599 | 350 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 351 | { |
b20f4073 | 352 | if (mgr->in_band) { |
6da1e809 BP |
353 | if (!in_band_run(mgr->in_band)) { |
354 | in_band_destroy(mgr->in_band); | |
355 | mgr->in_band = NULL; | |
356 | } | |
19a87e36 BP |
357 | } |
358 | ||
da0158d1 | 359 | struct ofconn *ofconn, *next_ofconn; |
19a87e36 BP |
360 | LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) { |
361 | ofconn_run(ofconn, handle_openflow); | |
362 | } | |
2b07c8b1 | 363 | ofmonitor_run(mgr); |
19a87e36 BP |
364 | |
365 | /* Fail-open maintenance. Do this after processing the ofconns since | |
366 | * fail-open checks the status of the controller rconn. */ | |
b20f4073 | 367 | if (mgr->fail_open) { |
19a87e36 BP |
368 | fail_open_run(mgr->fail_open); |
369 | } | |
370 | ||
da0158d1 | 371 | struct ofservice *ofservice; |
19a87e36 BP |
372 | HMAP_FOR_EACH (ofservice, node, &mgr->services) { |
373 | struct vconn *vconn; | |
da0158d1 | 374 | int retval = pvconn_accept(ofservice->pvconn, &vconn); |
19a87e36 | 375 | if (!retval) { |
f125905c | 376 | /* Passing default value for creation of the rconn */ |
da0158d1 BP |
377 | struct rconn *rconn = rconn_create( |
378 | ofservice->probe_interval, 0, ofservice->dscp, | |
379 | vconn_get_allowed_versions(vconn)); | |
380 | char *name = ofconn_make_name(mgr, vconn_get_name(vconn)); | |
19a87e36 BP |
381 | rconn_connect_unreliably(rconn, vconn, name); |
382 | free(name); | |
383 | ||
3b0c6b56 | 384 | ovs_mutex_lock(&ofproto_mutex); |
9886b662 BP |
385 | ofconn = ofconn_create(mgr, rconn, OFCONN_SERVICE, |
386 | ofservice->enable_async_msgs); | |
3b0c6b56 BP |
387 | ovs_mutex_unlock(&ofproto_mutex); |
388 | ||
19a87e36 BP |
389 | ofconn_set_rate_limit(ofconn, ofservice->rate_limit, |
390 | ofservice->burst_limit); | |
391 | } else if (retval != EAGAIN) { | |
10a89ef0 | 392 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); |
19a87e36 BP |
393 | } |
394 | } | |
395 | ||
da0158d1 | 396 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
19a87e36 | 397 | struct vconn *vconn; |
da0158d1 | 398 | int retval = pvconn_accept(mgr->snoops[i], &vconn); |
19a87e36 BP |
399 | if (!retval) { |
400 | add_snooper(mgr, vconn); | |
401 | } else if (retval != EAGAIN) { | |
10a89ef0 | 402 | VLOG_WARN_RL(&rl, "accept failed (%s)", ovs_strerror(retval)); |
19a87e36 BP |
403 | } |
404 | } | |
405 | } | |
406 | ||
b20f4073 | 407 | /* Causes the poll loop to wake up when connmgr_run() needs to run. */ |
19a87e36 | 408 | void |
b20f4073 | 409 | connmgr_wait(struct connmgr *mgr) |
19a87e36 | 410 | { |
19a87e36 | 411 | struct ofconn *ofconn; |
19a87e36 | 412 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
b20f4073 | 413 | ofconn_wait(ofconn); |
19a87e36 | 414 | } |
da0158d1 | 415 | |
2b07c8b1 | 416 | ofmonitor_wait(mgr); |
da0158d1 | 417 | |
b20f4073 | 418 | if (mgr->in_band) { |
19a87e36 BP |
419 | in_band_wait(mgr->in_band); |
420 | } | |
da0158d1 | 421 | |
b20f4073 | 422 | if (mgr->fail_open) { |
19a87e36 BP |
423 | fail_open_wait(mgr->fail_open); |
424 | } | |
da0158d1 BP |
425 | |
426 | struct ofservice *ofservice; | |
19a87e36 BP |
427 | HMAP_FOR_EACH (ofservice, node, &mgr->services) { |
428 | pvconn_wait(ofservice->pvconn); | |
429 | } | |
da0158d1 BP |
430 | |
431 | for (size_t i = 0; i < mgr->n_snoops; i++) { | |
19a87e36 BP |
432 | pvconn_wait(mgr->snoops[i]); |
433 | } | |
434 | } | |
435 | ||
0d085684 BP |
436 | /* Adds some memory usage statistics for 'mgr' into 'usage', for use with |
437 | * memory_report(). */ | |
438 | void | |
439 | connmgr_get_memory_usage(const struct connmgr *mgr, struct simap *usage) | |
440 | { | |
0d085684 BP |
441 | unsigned int packets = 0; |
442 | unsigned int ofconns = 0; | |
443 | ||
da0158d1 | 444 | const struct ofconn *ofconn; |
0d085684 | 445 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
0d085684 BP |
446 | ofconns++; |
447 | ||
448 | packets += rconn_count_txqlen(ofconn->rconn); | |
da0158d1 | 449 | for (int i = 0; i < N_SCHEDULERS; i++) { |
a413195e BP |
450 | struct pinsched_stats stats; |
451 | ||
452 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
ea53e3a8 | 453 | packets += stats.n_queued; |
0d085684 | 454 | } |
0d085684 BP |
455 | } |
456 | simap_increase(usage, "ofconns", ofconns); | |
457 | simap_increase(usage, "packets", packets); | |
458 | } | |
459 | ||
19a87e36 BP |
460 | /* Returns the ofproto that owns 'ofconn''s connmgr. */ |
461 | struct ofproto * | |
462 | ofconn_get_ofproto(const struct ofconn *ofconn) | |
463 | { | |
464 | return ofconn->connmgr->ofproto; | |
465 | } | |
7fdd2082 FL |
466 | |
467 | /* Sets the bundle idle timeout to 'timeout' seconds, interpreting 0 as | |
468 | * requesting the default timeout. | |
469 | * | |
470 | * The OpenFlow spec mandates the timeout to be at least one second; . */ | |
471 | void | |
472 | connmgr_set_bundle_idle_timeout(unsigned timeout) | |
473 | { | |
474 | bundle_idle_timeout = (timeout | |
475 | ? sat_mul(timeout, 1000) | |
476 | : BUNDLE_IDLE_TIMEOUT_DEFAULT); | |
477 | } | |
19a87e36 BP |
478 | \f |
479 | /* OpenFlow configuration. */ | |
480 | ||
1d9ffc17 | 481 | static void add_controller(struct connmgr *, const char *target, uint8_t dscp, |
3b0c6b56 BP |
482 | uint32_t allowed_versions) |
483 | OVS_REQUIRES(ofproto_mutex); | |
19a87e36 BP |
484 | static struct ofconn *find_controller_by_target(struct connmgr *, |
485 | const char *target); | |
feb8a80b | 486 | static void update_fail_open(struct connmgr *) OVS_EXCLUDED(ofproto_mutex); |
19a87e36 | 487 | static int set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, |
81e2083f | 488 | const struct sset *); |
19a87e36 BP |
489 | |
490 | /* Returns true if 'mgr' has any configured primary controllers. | |
491 | * | |
492 | * Service controllers do not count, but configured primary controllers do | |
493 | * count whether or not they are currently connected. */ | |
494 | bool | |
495 | connmgr_has_controllers(const struct connmgr *mgr) | |
496 | { | |
497 | return !hmap_is_empty(&mgr->controllers); | |
498 | } | |
499 | ||
500 | /* Initializes 'info' and populates it with information about each configured | |
501 | * primary controller. The keys in 'info' are the controllers' targets; the | |
502 | * data values are corresponding "struct ofproto_controller_info". | |
503 | * | |
504 | * The caller owns 'info' and everything in it and should free it when it is no | |
505 | * longer needed. */ | |
506 | void | |
507 | connmgr_get_controller_info(struct connmgr *mgr, struct shash *info) | |
508 | { | |
509 | const struct ofconn *ofconn; | |
510 | ||
19a87e36 BP |
511 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { |
512 | const struct rconn *rconn = ofconn->rconn; | |
5d279086 | 513 | const char *target = rconn_get_target(rconn); |
19a87e36 | 514 | |
5d279086 AE |
515 | if (!shash_find(info, target)) { |
516 | struct ofproto_controller_info *cinfo = xmalloc(sizeof *cinfo); | |
517 | time_t now = time_now(); | |
518 | time_t last_connection = rconn_get_last_connection(rconn); | |
519 | time_t last_disconnect = rconn_get_last_disconnect(rconn); | |
520 | int last_error = rconn_get_last_error(rconn); | |
a413195e | 521 | int i; |
19a87e36 | 522 | |
5d279086 | 523 | shash_add(info, target, cinfo); |
19a87e36 | 524 | |
5d279086 AE |
525 | cinfo->is_connected = rconn_is_connected(rconn); |
526 | cinfo->role = ofconn->role; | |
19a87e36 | 527 | |
f5ad2e5f | 528 | smap_init(&cinfo->pairs); |
5d279086 | 529 | if (last_error) { |
f5ad2e5f BP |
530 | smap_add(&cinfo->pairs, "last_error", |
531 | ovs_retval_to_string(last_error)); | |
5d279086 | 532 | } |
19a87e36 | 533 | |
f5ad2e5f | 534 | smap_add(&cinfo->pairs, "state", rconn_get_state(rconn)); |
5d279086 AE |
535 | |
536 | if (last_connection != TIME_MIN) { | |
f5ad2e5f BP |
537 | smap_add_format(&cinfo->pairs, "sec_since_connect", |
538 | "%ld", (long int) (now - last_connection)); | |
5d279086 AE |
539 | } |
540 | ||
541 | if (last_disconnect != TIME_MIN) { | |
f5ad2e5f BP |
542 | smap_add_format(&cinfo->pairs, "sec_since_disconnect", |
543 | "%ld", (long int) (now - last_disconnect)); | |
5d279086 | 544 | } |
a413195e BP |
545 | |
546 | for (i = 0; i < N_SCHEDULERS; i++) { | |
547 | if (ofconn->schedulers[i]) { | |
548 | const char *name = i ? "miss" : "action"; | |
549 | struct pinsched_stats stats; | |
550 | ||
551 | pinsched_get_stats(ofconn->schedulers[i], &stats); | |
552 | smap_add_nocopy(&cinfo->pairs, | |
553 | xasprintf("packet-in-%s-backlog", name), | |
554 | xasprintf("%u", stats.n_queued)); | |
555 | smap_add_nocopy(&cinfo->pairs, | |
556 | xasprintf("packet-in-%s-bypassed", name), | |
557 | xasprintf("%llu", stats.n_normal)); | |
558 | smap_add_nocopy(&cinfo->pairs, | |
559 | xasprintf("packet-in-%s-queued", name), | |
560 | xasprintf("%llu", stats.n_limited)); | |
561 | smap_add_nocopy(&cinfo->pairs, | |
562 | xasprintf("packet-in-%s-dropped", name), | |
563 | xasprintf("%llu", stats.n_queue_dropped)); | |
564 | } | |
565 | } | |
19a87e36 BP |
566 | } |
567 | } | |
568 | } | |
569 | ||
72ba2ed3 AE |
570 | void |
571 | connmgr_free_controller_info(struct shash *info) | |
572 | { | |
573 | struct shash_node *node; | |
574 | ||
575 | SHASH_FOR_EACH (node, info) { | |
576 | struct ofproto_controller_info *cinfo = node->data; | |
f5ad2e5f | 577 | smap_destroy(&cinfo->pairs); |
72ba2ed3 AE |
578 | free(cinfo); |
579 | } | |
580 | shash_destroy(info); | |
581 | } | |
582 | ||
19a87e36 BP |
583 | /* Changes 'mgr''s set of controllers to the 'n_controllers' controllers in |
584 | * 'controllers'. */ | |
585 | void | |
af26093a | 586 | connmgr_set_controllers(struct connmgr *mgr, struct shash *controllers) |
3b0c6b56 | 587 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 588 | { |
08fd19f0 | 589 | bool had_controllers = connmgr_has_controllers(mgr); |
19a87e36 | 590 | |
3b0c6b56 BP |
591 | /* Required to add and remove ofconns. This could probably be narrowed to |
592 | * cover a smaller amount of code, if that yielded some benefit. */ | |
593 | ovs_mutex_lock(&ofproto_mutex); | |
594 | ||
af26093a BP |
595 | /* Create newly configured controllers and services. */ |
596 | struct shash_node *node; | |
597 | SHASH_FOR_EACH (node, controllers) { | |
598 | const char *target = node->name; | |
599 | const struct ofproto_controller *c = node->data; | |
19a87e36 | 600 | |
af26093a | 601 | if (!vconn_verify_name(target)) { |
90ef0206 | 602 | bool add = false; |
af26093a | 603 | struct ofconn *ofconn = find_controller_by_target(mgr, target); |
90ef0206 | 604 | if (!ofconn) { |
1ea9e609 | 605 | VLOG_INFO("%s: added primary controller \"%s\"", |
af26093a | 606 | mgr->name, target); |
90ef0206 SH |
607 | add = true; |
608 | } else if (rconn_get_allowed_versions(ofconn->rconn) != | |
af26093a | 609 | c->allowed_versions) { |
90ef0206 | 610 | VLOG_INFO("%s: re-added primary controller \"%s\"", |
af26093a | 611 | mgr->name, target); |
90ef0206 SH |
612 | add = true; |
613 | ofconn_destroy(ofconn); | |
614 | } | |
615 | if (add) { | |
af26093a | 616 | add_controller(mgr, target, c->dscp, c->allowed_versions); |
19a87e36 | 617 | } |
af26093a | 618 | } else if (!pvconn_verify_name(target)) { |
90ef0206 | 619 | bool add = false; |
af26093a | 620 | struct ofservice *ofservice = ofservice_lookup(mgr, target); |
90ef0206 | 621 | if (!ofservice) { |
1ea9e609 | 622 | VLOG_INFO("%s: added service controller \"%s\"", |
af26093a | 623 | mgr->name, target); |
90ef0206 | 624 | add = true; |
af26093a | 625 | } else if (ofservice->allowed_versions != c->allowed_versions) { |
90ef0206 | 626 | VLOG_INFO("%s: re-added service controller \"%s\"", |
af26093a | 627 | mgr->name, target); |
90ef0206 SH |
628 | ofservice_destroy(mgr, ofservice); |
629 | add = true; | |
630 | } | |
631 | if (add) { | |
af26093a | 632 | ofservice_create(mgr, target, c->allowed_versions, c->dscp); |
19a87e36 BP |
633 | } |
634 | } else { | |
635 | VLOG_WARN_RL(&rl, "%s: unsupported controller \"%s\"", | |
af26093a | 636 | mgr->name, target); |
19a87e36 | 637 | } |
19a87e36 BP |
638 | } |
639 | ||
640 | /* Delete controllers that are no longer configured. | |
641 | * Update configuration of all now-existing controllers. */ | |
da0158d1 | 642 | struct ofconn *ofconn, *next_ofconn; |
19a87e36 | 643 | HMAP_FOR_EACH_SAFE (ofconn, next_ofconn, hmap_node, &mgr->controllers) { |
1ea9e609 | 644 | const char *target = ofconn_get_target(ofconn); |
af26093a | 645 | struct ofproto_controller *c = shash_find_data(controllers, target); |
19a87e36 | 646 | if (!c) { |
1ea9e609 BP |
647 | VLOG_INFO("%s: removed primary controller \"%s\"", |
648 | mgr->name, target); | |
19a87e36 BP |
649 | ofconn_destroy(ofconn); |
650 | } else { | |
651 | ofconn_reconfigure(ofconn, c); | |
652 | } | |
653 | } | |
654 | ||
655 | /* Delete services that are no longer configured. | |
656 | * Update configuration of all now-existing services. */ | |
da0158d1 | 657 | struct ofservice *ofservice, *next_ofservice; |
19a87e36 | 658 | HMAP_FOR_EACH_SAFE (ofservice, next_ofservice, node, &mgr->services) { |
1ea9e609 | 659 | const char *target = pvconn_get_name(ofservice->pvconn); |
af26093a | 660 | struct ofproto_controller *c = shash_find_data(controllers, target); |
19a87e36 | 661 | if (!c) { |
1ea9e609 BP |
662 | VLOG_INFO("%s: removed service controller \"%s\"", |
663 | mgr->name, target); | |
19a87e36 BP |
664 | ofservice_destroy(mgr, ofservice); |
665 | } else { | |
666 | ofservice_reconfigure(ofservice, c); | |
667 | } | |
668 | } | |
669 | ||
c7be3f55 BP |
670 | ovs_mutex_unlock(&ofproto_mutex); |
671 | ||
19a87e36 BP |
672 | update_in_band_remotes(mgr); |
673 | update_fail_open(mgr); | |
08fd19f0 BP |
674 | if (had_controllers != connmgr_has_controllers(mgr)) { |
675 | ofproto_flush_flows(mgr->ofproto); | |
676 | } | |
19a87e36 BP |
677 | } |
678 | ||
679 | /* Drops the connections between 'mgr' and all of its primary and secondary | |
680 | * controllers, forcing them to reconnect. */ | |
681 | void | |
682 | connmgr_reconnect(const struct connmgr *mgr) | |
683 | { | |
684 | struct ofconn *ofconn; | |
685 | ||
686 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
687 | rconn_reconnect(ofconn->rconn); | |
688 | } | |
689 | } | |
690 | ||
691 | /* Sets the "snoops" for 'mgr' to the pvconn targets listed in 'snoops'. | |
692 | * | |
693 | * A "snoop" is a pvconn to which every OpenFlow message to or from the most | |
694 | * important controller on 'mgr' is mirrored. */ | |
695 | int | |
81e2083f | 696 | connmgr_set_snoops(struct connmgr *mgr, const struct sset *snoops) |
19a87e36 BP |
697 | { |
698 | return set_pvconns(&mgr->snoops, &mgr->n_snoops, snoops); | |
699 | } | |
700 | ||
701 | /* Adds each of the snoops currently configured on 'mgr' to 'snoops'. */ | |
702 | void | |
81e2083f | 703 | connmgr_get_snoops(const struct connmgr *mgr, struct sset *snoops) |
19a87e36 | 704 | { |
da0158d1 | 705 | for (size_t i = 0; i < mgr->n_snoops; i++) { |
81e2083f | 706 | sset_add(snoops, pvconn_get_name(mgr->snoops[i])); |
19a87e36 BP |
707 | } |
708 | } | |
709 | ||
81e2083f BP |
710 | /* Returns true if 'mgr' has at least one snoop, false if it has none. */ |
711 | bool | |
712 | connmgr_has_snoops(const struct connmgr *mgr) | |
713 | { | |
714 | return mgr->n_snoops > 0; | |
715 | } | |
716 | ||
19a87e36 BP |
717 | /* Creates a new controller for 'target' in 'mgr'. update_controller() needs |
718 | * to be called later to finish the new ofconn's configuration. */ | |
719 | static void | |
1d9ffc17 SH |
720 | add_controller(struct connmgr *mgr, const char *target, uint8_t dscp, |
721 | uint32_t allowed_versions) | |
3b0c6b56 | 722 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 BP |
723 | { |
724 | char *name = ofconn_make_name(mgr, target); | |
da0158d1 BP |
725 | struct ofconn *ofconn = ofconn_create(mgr, rconn_create(5, 8, dscp, |
726 | allowed_versions), | |
727 | OFCONN_PRIMARY, true); | |
19a87e36 BP |
728 | rconn_connect(ofconn->rconn, target, name); |
729 | hmap_insert(&mgr->controllers, &ofconn->hmap_node, hash_string(target, 0)); | |
730 | ||
731 | free(name); | |
732 | } | |
733 | ||
734 | static struct ofconn * | |
735 | find_controller_by_target(struct connmgr *mgr, const char *target) | |
736 | { | |
737 | struct ofconn *ofconn; | |
738 | ||
739 | HMAP_FOR_EACH_WITH_HASH (ofconn, hmap_node, | |
740 | hash_string(target, 0), &mgr->controllers) { | |
741 | if (!strcmp(ofconn_get_target(ofconn), target)) { | |
742 | return ofconn; | |
743 | } | |
744 | } | |
745 | return NULL; | |
746 | } | |
747 | ||
748 | static void | |
749 | update_in_band_remotes(struct connmgr *mgr) | |
750 | { | |
19a87e36 | 751 | /* Allocate enough memory for as many remotes as we could possibly have. */ |
da0158d1 BP |
752 | size_t max_addrs = mgr->n_extra_remotes + hmap_count(&mgr->controllers); |
753 | struct sockaddr_in *addrs = xmalloc(max_addrs * sizeof *addrs); | |
754 | size_t n_addrs = 0; | |
19a87e36 BP |
755 | |
756 | /* Add all the remotes. */ | |
da0158d1 | 757 | struct ofconn *ofconn; |
19a87e36 | 758 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { |
ac4c900d | 759 | const char *target = rconn_get_target(ofconn->rconn); |
02334943 JR |
760 | union { |
761 | struct sockaddr_storage ss; | |
762 | struct sockaddr_in in; | |
763 | } sa; | |
19a87e36 | 764 | |
e731d71b | 765 | if (ofconn->band == OFPROTO_IN_BAND |
d4763d1d | 766 | && stream_parse_target_with_default_port(target, OFP_PORT, &sa.ss) |
02334943 JR |
767 | && sa.ss.ss_family == AF_INET) { |
768 | addrs[n_addrs++] = sa.in; | |
19a87e36 BP |
769 | } |
770 | } | |
da0158d1 | 771 | for (size_t i = 0; i < mgr->n_extra_remotes; i++) { |
19a87e36 BP |
772 | addrs[n_addrs++] = mgr->extra_in_band_remotes[i]; |
773 | } | |
774 | ||
775 | /* Create or update or destroy in-band. */ | |
776 | if (n_addrs) { | |
777 | if (!mgr->in_band) { | |
778 | in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band); | |
779 | } | |
19a87e36 | 780 | } else { |
6da1e809 BP |
781 | /* in_band_run() needs a chance to delete any existing in-band flows. |
782 | * We will destroy mgr->in_band after it's done with that. */ | |
783 | } | |
784 | if (mgr->in_band) { | |
66a9ef7a | 785 | in_band_set_queue(mgr->in_band, mgr->in_band_queue); |
6da1e809 | 786 | in_band_set_remotes(mgr->in_band, addrs, n_addrs); |
19a87e36 BP |
787 | } |
788 | ||
789 | /* Clean up. */ | |
790 | free(addrs); | |
791 | } | |
792 | ||
793 | static void | |
794 | update_fail_open(struct connmgr *mgr) | |
feb8a80b | 795 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 BP |
796 | { |
797 | if (connmgr_has_controllers(mgr) | |
798 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
799 | if (!mgr->fail_open) { | |
800 | mgr->fail_open = fail_open_create(mgr->ofproto, mgr); | |
801 | } | |
802 | } else { | |
25010c68 | 803 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 | 804 | fail_open_destroy(mgr->fail_open); |
25010c68 | 805 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
806 | mgr->fail_open = NULL; |
807 | } | |
808 | } | |
809 | ||
810 | static int | |
811 | set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp, | |
81e2083f | 812 | const struct sset *sset) |
19a87e36 | 813 | { |
da0158d1 BP |
814 | /* Free the old pvconns. */ |
815 | struct pvconn **old_pvconns = *pvconnsp; | |
816 | size_t old_n_pvconns = *n_pvconnsp; | |
817 | for (size_t i = 0; i < old_n_pvconns; i++) { | |
818 | pvconn_close(old_pvconns[i]); | |
19a87e36 | 819 | } |
da0158d1 BP |
820 | free(old_pvconns); |
821 | ||
822 | /* Populate the new pvconns. */ | |
823 | struct pvconn **new_pvconns = xmalloc(sset_count(sset) | |
824 | * sizeof *new_pvconns); | |
825 | size_t new_n_pvconns = 0; | |
19a87e36 | 826 | |
da0158d1 BP |
827 | int retval = 0; |
828 | const char *name; | |
81e2083f | 829 | SSET_FOR_EACH (name, sset) { |
19a87e36 | 830 | struct pvconn *pvconn; |
da0158d1 | 831 | int error = pvconn_open(name, 0, 0, &pvconn); |
19a87e36 | 832 | if (!error) { |
da0158d1 | 833 | new_pvconns[new_n_pvconns++] = pvconn; |
19a87e36 | 834 | } else { |
10a89ef0 | 835 | VLOG_ERR("failed to listen on %s: %s", name, ovs_strerror(error)); |
19a87e36 BP |
836 | if (!retval) { |
837 | retval = error; | |
838 | } | |
839 | } | |
840 | } | |
841 | ||
da0158d1 BP |
842 | *pvconnsp = new_pvconns; |
843 | *n_pvconnsp = new_n_pvconns; | |
19a87e36 BP |
844 | |
845 | return retval; | |
846 | } | |
847 | ||
848 | /* Returns a "preference level" for snooping 'ofconn'. A higher return value | |
849 | * means that 'ofconn' is more interesting for monitoring than a lower return | |
850 | * value. */ | |
851 | static int | |
852 | snoop_preference(const struct ofconn *ofconn) | |
853 | { | |
854 | switch (ofconn->role) { | |
f4f1ea7e | 855 | case OFPCR12_ROLE_MASTER: |
19a87e36 | 856 | return 3; |
f4f1ea7e | 857 | case OFPCR12_ROLE_EQUAL: |
19a87e36 | 858 | return 2; |
f4f1ea7e | 859 | case OFPCR12_ROLE_SLAVE: |
19a87e36 | 860 | return 1; |
f4f1ea7e | 861 | case OFPCR12_ROLE_NOCHANGE: |
19a87e36 BP |
862 | default: |
863 | /* Shouldn't happen. */ | |
864 | return 0; | |
865 | } | |
866 | } | |
867 | ||
868 | /* One of 'mgr''s "snoop" pvconns has accepted a new connection on 'vconn'. | |
869 | * Connects this vconn to a controller. */ | |
870 | static void | |
871 | add_snooper(struct connmgr *mgr, struct vconn *vconn) | |
872 | { | |
19a87e36 | 873 | /* Pick a controller for monitoring. */ |
da0158d1 BP |
874 | struct ofconn *best = NULL; |
875 | struct ofconn *ofconn; | |
19a87e36 BP |
876 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
877 | if (ofconn->type == OFCONN_PRIMARY | |
878 | && (!best || snoop_preference(ofconn) > snoop_preference(best))) { | |
879 | best = ofconn; | |
880 | } | |
881 | } | |
882 | ||
883 | if (best) { | |
884 | rconn_add_monitor(best->rconn, vconn); | |
885 | } else { | |
886 | VLOG_INFO_RL(&rl, "no controller connection to snoop"); | |
887 | vconn_close(vconn); | |
888 | } | |
889 | } | |
890 | \f | |
891 | /* Public ofconn functions. */ | |
892 | ||
893 | /* Returns the connection type, either OFCONN_PRIMARY or OFCONN_SERVICE. */ | |
894 | enum ofconn_type | |
895 | ofconn_get_type(const struct ofconn *ofconn) | |
896 | { | |
897 | return ofconn->type; | |
898 | } | |
899 | ||
147cc9d3 BP |
900 | /* If a master election id is defined, stores it into '*idp' and returns |
901 | * true. Otherwise, stores UINT64_MAX into '*idp' and returns false. */ | |
902 | bool | |
903 | ofconn_get_master_election_id(const struct ofconn *ofconn, uint64_t *idp) | |
904 | { | |
905 | *idp = (ofconn->connmgr->master_election_id_defined | |
906 | ? ofconn->connmgr->master_election_id | |
907 | : UINT64_MAX); | |
908 | return ofconn->connmgr->master_election_id_defined; | |
909 | } | |
910 | ||
6ea4776b JR |
911 | /* Sets the master election id. |
912 | * | |
913 | * Returns true if successful, false if the id is stale | |
914 | */ | |
915 | bool | |
916 | ofconn_set_master_election_id(struct ofconn *ofconn, uint64_t id) | |
917 | { | |
918 | if (ofconn->connmgr->master_election_id_defined | |
919 | && | |
920 | /* Unsigned difference interpreted as a two's complement signed | |
921 | * value */ | |
922 | (int64_t)(id - ofconn->connmgr->master_election_id) < 0) { | |
923 | return false; | |
924 | } | |
925 | ofconn->connmgr->master_election_id = id; | |
926 | ofconn->connmgr->master_election_id_defined = true; | |
927 | ||
928 | return true; | |
929 | } | |
930 | ||
19a87e36 BP |
931 | /* Returns the role configured for 'ofconn'. |
932 | * | |
f4f1ea7e BP |
933 | * The default role, if no other role has been set, is OFPCR12_ROLE_EQUAL. */ |
934 | enum ofp12_controller_role | |
19a87e36 BP |
935 | ofconn_get_role(const struct ofconn *ofconn) |
936 | { | |
937 | return ofconn->role; | |
938 | } | |
939 | ||
00467f73 AC |
940 | void |
941 | ofconn_send_role_status(struct ofconn *ofconn, uint32_t role, uint8_t reason) | |
942 | { | |
943 | struct ofputil_role_status status; | |
00467f73 AC |
944 | status.reason = reason; |
945 | status.role = role; | |
946 | ofconn_get_master_election_id(ofconn, &status.generation_id); | |
947 | ||
da0158d1 BP |
948 | struct ofpbuf *buf |
949 | = ofputil_encode_role_status(&status, ofconn_get_protocol(ofconn)); | |
6751a4b4 BP |
950 | if (buf) { |
951 | ofconn_send(ofconn, buf, NULL); | |
952 | } | |
00467f73 AC |
953 | } |
954 | ||
f4f1ea7e BP |
955 | /* Changes 'ofconn''s role to 'role'. If 'role' is OFPCR12_ROLE_MASTER then |
956 | * any existing master is demoted to a slave. */ | |
19a87e36 | 957 | void |
f4f1ea7e | 958 | ofconn_set_role(struct ofconn *ofconn, enum ofp12_controller_role role) |
19a87e36 | 959 | { |
00467f73 | 960 | if (role != ofconn->role && role == OFPCR12_ROLE_MASTER) { |
19a87e36 BP |
961 | struct ofconn *other; |
962 | ||
ab66e29f | 963 | LIST_FOR_EACH (other, node, &ofconn->connmgr->all_conns) { |
f4f1ea7e BP |
964 | if (other->role == OFPCR12_ROLE_MASTER) { |
965 | other->role = OFPCR12_ROLE_SLAVE; | |
da0158d1 BP |
966 | ofconn_send_role_status(other, OFPCR12_ROLE_SLAVE, |
967 | OFPCRR_MASTER_REQUEST); | |
19a87e36 BP |
968 | } |
969 | } | |
970 | } | |
971 | ofconn->role = role; | |
972 | } | |
973 | ||
f0fd1a17 | 974 | void |
80d5aefd | 975 | ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool enable) |
f0fd1a17 | 976 | { |
a930d4c5 | 977 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd BP |
978 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
979 | if (enable) { | |
a930d4c5 | 980 | ac.master[OAM_PACKET_IN] |= bit; |
80d5aefd | 981 | } else { |
a930d4c5 | 982 | ac.master[OAM_PACKET_IN] &= ~bit; |
80d5aefd | 983 | } |
a930d4c5 | 984 | ofconn_set_async_config(ofconn, &ac); |
f0fd1a17 PS |
985 | } |
986 | ||
987 | bool | |
988 | ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn) | |
989 | { | |
a930d4c5 | 990 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
80d5aefd | 991 | uint32_t bit = 1u << OFPR_INVALID_TTL; |
a930d4c5 | 992 | return (ac.master[OAM_PACKET_IN] & bit) != 0; |
f0fd1a17 PS |
993 | } |
994 | ||
27527aa0 | 995 | /* Returns the currently configured protocol for 'ofconn', one of OFPUTIL_P_*. |
19a87e36 | 996 | * |
eb12aa89 BP |
997 | * Returns OFPUTIL_P_NONE, which is not a valid protocol, if 'ofconn' hasn't |
998 | * completed version negotiation. This can't happen if at least one OpenFlow | |
999 | * message, other than OFPT_HELLO, has been received on the connection (such as | |
1000 | * in ofproto.c's message handling code), since version negotiation is a | |
1001 | * prerequisite for starting to receive messages. This means that | |
1002 | * OFPUTIL_P_NONE is a special case that most callers need not worry about. */ | |
27527aa0 | 1003 | enum ofputil_protocol |
e3d560db | 1004 | ofconn_get_protocol(const struct ofconn *ofconn) |
19a87e36 | 1005 | { |
eb12aa89 BP |
1006 | if (ofconn->protocol == OFPUTIL_P_NONE && |
1007 | rconn_is_connected(ofconn->rconn)) { | |
1008 | int version = rconn_get_version(ofconn->rconn); | |
1009 | if (version > 0) { | |
1010 | ofconn_set_protocol(CONST_CAST(struct ofconn *, ofconn), | |
1011 | ofputil_protocol_from_ofp_version(version)); | |
1012 | } | |
1013 | } | |
1014 | ||
27527aa0 | 1015 | return ofconn->protocol; |
19a87e36 BP |
1016 | } |
1017 | ||
27527aa0 BP |
1018 | /* Sets the protocol for 'ofconn' to 'protocol' (one of OFPUTIL_P_*). |
1019 | * | |
1020 | * (This doesn't actually send anything to accomplish this. Presumably the | |
1021 | * caller already did that.) */ | |
19a87e36 | 1022 | void |
27527aa0 | 1023 | ofconn_set_protocol(struct ofconn *ofconn, enum ofputil_protocol protocol) |
19a87e36 | 1024 | { |
27527aa0 | 1025 | ofconn->protocol = protocol; |
b9320e51 | 1026 | update_want_packet_in_on_miss(ofconn); |
19a87e36 BP |
1027 | } |
1028 | ||
54834960 EJ |
1029 | /* Returns the currently configured packet in format for 'ofconn', one of |
1030 | * NXPIF_*. | |
1031 | * | |
6409e008 | 1032 | * The default, if no other format has been set, is NXPIF_STANDARD. */ |
d8790c08 | 1033 | enum ofputil_packet_in_format |
54834960 EJ |
1034 | ofconn_get_packet_in_format(struct ofconn *ofconn) |
1035 | { | |
1036 | return ofconn->packet_in_format; | |
1037 | } | |
1038 | ||
1039 | /* Sets the packet in format for 'ofconn' to 'packet_in_format' (one of | |
1040 | * NXPIF_*). */ | |
1041 | void | |
1042 | ofconn_set_packet_in_format(struct ofconn *ofconn, | |
d8790c08 | 1043 | enum ofputil_packet_in_format packet_in_format) |
54834960 EJ |
1044 | { |
1045 | ofconn->packet_in_format = packet_in_format; | |
1046 | } | |
1047 | ||
a7349929 BP |
1048 | /* Sets the controller connection ID for 'ofconn' to 'controller_id'. |
1049 | * | |
1050 | * The connection controller ID is used for OFPP_CONTROLLER and | |
1051 | * NXAST_CONTROLLER actions. See "struct nx_action_controller" for details. */ | |
1052 | void | |
1053 | ofconn_set_controller_id(struct ofconn *ofconn, uint16_t controller_id) | |
1054 | { | |
1055 | ofconn->controller_id = controller_id; | |
b9320e51 | 1056 | update_want_packet_in_on_miss(ofconn); |
a7349929 BP |
1057 | } |
1058 | ||
19a87e36 BP |
1059 | /* Returns the default miss send length for 'ofconn'. */ |
1060 | int | |
1061 | ofconn_get_miss_send_len(const struct ofconn *ofconn) | |
1062 | { | |
1063 | return ofconn->miss_send_len; | |
1064 | } | |
1065 | ||
1066 | /* Sets the default miss send length for 'ofconn' to 'miss_send_len'. */ | |
1067 | void | |
1068 | ofconn_set_miss_send_len(struct ofconn *ofconn, int miss_send_len) | |
1069 | { | |
1070 | ofconn->miss_send_len = miss_send_len; | |
1071 | } | |
1072 | ||
80d5aefd BP |
1073 | void |
1074 | ofconn_set_async_config(struct ofconn *ofconn, | |
a930d4c5 | 1075 | const struct ofputil_async_cfg *ac) |
80d5aefd | 1076 | { |
a930d4c5 BP |
1077 | if (!ofconn->async_cfg) { |
1078 | ofconn->async_cfg = xmalloc(sizeof *ofconn->async_cfg); | |
1079 | } | |
1080 | *ofconn->async_cfg = *ac; | |
e19a6769 YHW |
1081 | |
1082 | if (ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)) | |
1083 | < OFP14_VERSION) { | |
1084 | if (ofconn->async_cfg->master[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
1085 | ofconn->async_cfg->master[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
1086 | } | |
1087 | if (ofconn->async_cfg->slave[OAM_PACKET_IN] & (1u << OFPR_ACTION)) { | |
1088 | ofconn->async_cfg->slave[OAM_PACKET_IN] |= OFPR14_ACTION_BITS; | |
1089 | } | |
1090 | } | |
80d5aefd BP |
1091 | } |
1092 | ||
a930d4c5 BP |
1093 | struct ofputil_async_cfg |
1094 | ofconn_get_async_config(const struct ofconn *ofconn) | |
c423b3b3 | 1095 | { |
a930d4c5 BP |
1096 | if (ofconn->async_cfg) { |
1097 | return *ofconn->async_cfg; | |
3a11fd5b SS |
1098 | } |
1099 | ||
a930d4c5 BP |
1100 | int version = rconn_get_version(ofconn->rconn); |
1101 | return (version < 0 || !ofconn->enable_async_msgs | |
1102 | ? OFPUTIL_ASYNC_CFG_INIT | |
1103 | : ofputil_async_cfg_default(version)); | |
c423b3b3 AC |
1104 | } |
1105 | ||
19a87e36 BP |
1106 | /* Sends 'msg' on 'ofconn', accounting it as a reply. (If there is a |
1107 | * sufficient number of OpenFlow replies in-flight on a single ofconn, then the | |
1108 | * connmgr will stop accepting new OpenFlow requests on that ofconn until the | |
1109 | * controller has accepted some of the replies.) */ | |
1110 | void | |
1111 | ofconn_send_reply(const struct ofconn *ofconn, struct ofpbuf *msg) | |
1112 | { | |
1113 | ofconn_send(ofconn, msg, ofconn->reply_counter); | |
1114 | } | |
1115 | ||
63f2140a BP |
1116 | /* Sends each of the messages in list 'replies' on 'ofconn' in order, |
1117 | * accounting them as replies. */ | |
1118 | void | |
ca6ba700 | 1119 | ofconn_send_replies(const struct ofconn *ofconn, struct ovs_list *replies) |
63f2140a | 1120 | { |
5f03c983 | 1121 | struct ofpbuf *reply; |
63f2140a | 1122 | |
5f03c983 | 1123 | LIST_FOR_EACH_POP (reply, list_node, replies) { |
63f2140a BP |
1124 | ofconn_send_reply(ofconn, reply); |
1125 | } | |
1126 | } | |
1127 | ||
52c57cbb | 1128 | /* Sends 'error' on 'ofconn', as a reply to 'request'. */ |
1be5ff75 BP |
1129 | void |
1130 | ofconn_send_error(const struct ofconn *ofconn, | |
90bf1e07 | 1131 | const struct ofp_header *request, enum ofperr error) |
1be5ff75 | 1132 | { |
07c8ec21 | 1133 | static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10); |
da0158d1 | 1134 | struct ofpbuf *reply = ofperr_encode_reply(error, request); |
07c8ec21 | 1135 | if (!VLOG_DROP_INFO(&err_rl)) { |
da0158d1 | 1136 | size_t request_len = ntohs(request->length); |
07c8ec21 | 1137 | |
da0158d1 BP |
1138 | enum ofpraw raw; |
1139 | const char *type_name = (!ofpraw_decode_partial(&raw, request, | |
1140 | MIN(64, request_len)) | |
1141 | ? ofpraw_get_name(raw) | |
1142 | : "invalid"); | |
07c8ec21 BP |
1143 | |
1144 | VLOG_INFO("%s: sending %s error reply to %s message", | |
1145 | rconn_get_name(ofconn->rconn), ofperr_to_string(error), | |
1146 | type_name); | |
1147 | } | |
1148 | ofconn_send_reply(ofconn, reply); | |
1be5ff75 BP |
1149 | } |
1150 | ||
696d1bcf BP |
1151 | /* Reports that a flow_mod operation of the type specified by 'command' was |
1152 | * successfully executed by 'ofconn', so that the connmgr can log it. */ | |
1153 | void | |
1154 | ofconn_report_flow_mod(struct ofconn *ofconn, | |
1155 | enum ofp_flow_mod_command command) | |
1156 | { | |
696d1bcf BP |
1157 | switch (command) { |
1158 | case OFPFC_ADD: | |
1159 | ofconn->n_add++; | |
1160 | break; | |
1161 | ||
1162 | case OFPFC_MODIFY: | |
1163 | case OFPFC_MODIFY_STRICT: | |
1164 | ofconn->n_modify++; | |
1165 | break; | |
1166 | ||
1167 | case OFPFC_DELETE: | |
1168 | case OFPFC_DELETE_STRICT: | |
1169 | ofconn->n_delete++; | |
1170 | break; | |
1171 | } | |
1172 | ||
da0158d1 | 1173 | long long int now = time_msec(); |
696d1bcf BP |
1174 | if (ofconn->next_op_report == LLONG_MAX) { |
1175 | ofconn->first_op = now; | |
1176 | ofconn->next_op_report = MAX(now + 10 * 1000, ofconn->op_backoff); | |
1177 | ofconn->op_backoff = ofconn->next_op_report + 60 * 1000; | |
1178 | } | |
1179 | ofconn->last_op = now; | |
1180 | } | |
ff09bc08 JR |
1181 | \f |
1182 | /* OpenFlow 1.4 bundles. */ | |
696d1bcf | 1183 | |
ff09bc08 JR |
1184 | static inline uint32_t |
1185 | bundle_hash(uint32_t id) | |
777af88d | 1186 | { |
ff09bc08 | 1187 | return hash_int(id, 0); |
777af88d AC |
1188 | } |
1189 | ||
ff09bc08 JR |
1190 | struct ofp_bundle * |
1191 | ofconn_get_bundle(struct ofconn *ofconn, uint32_t id) | |
1192 | { | |
1193 | struct ofp_bundle *bundle; | |
1194 | ||
1195 | HMAP_FOR_EACH_IN_BUCKET(bundle, node, bundle_hash(id), &ofconn->bundles) { | |
1196 | if (bundle->id == id) { | |
1197 | return bundle; | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | return NULL; | |
1202 | } | |
1203 | ||
52c57cbb | 1204 | void |
ff09bc08 JR |
1205 | ofconn_insert_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1206 | { | |
ff09bc08 | 1207 | hmap_insert(&ofconn->bundles, &bundle->node, bundle_hash(bundle->id)); |
ff09bc08 JR |
1208 | } |
1209 | ||
52c57cbb | 1210 | void |
ff09bc08 JR |
1211 | ofconn_remove_bundle(struct ofconn *ofconn, struct ofp_bundle *bundle) |
1212 | { | |
1213 | hmap_remove(&ofconn->bundles, &bundle->node); | |
ff09bc08 JR |
1214 | } |
1215 | ||
1216 | static void | |
1217 | bundle_remove_all(struct ofconn *ofconn) | |
1218 | { | |
1219 | struct ofp_bundle *b, *next; | |
1220 | ||
1221 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { | |
0c78eebe | 1222 | ofp_bundle_remove__(ofconn, b); |
ff09bc08 JR |
1223 | } |
1224 | } | |
51bb26fa JR |
1225 | |
1226 | static void | |
1227 | bundle_remove_expired(struct ofconn *ofconn, long long int now) | |
1228 | { | |
7fdd2082 | 1229 | long long int limit = now - bundle_idle_timeout; |
51bb26fa | 1230 | |
da0158d1 | 1231 | struct ofp_bundle *b, *next; |
51bb26fa JR |
1232 | HMAP_FOR_EACH_SAFE (b, next, node, &ofconn->bundles) { |
1233 | if (b->used <= limit) { | |
52c57cbb | 1234 | ofconn_send_error(ofconn, b->msg, OFPERR_OFPBFC_TIMEOUT); |
0c78eebe | 1235 | ofp_bundle_remove__(ofconn, b); |
51bb26fa JR |
1236 | } |
1237 | } | |
1238 | } | |
19a87e36 BP |
1239 | \f |
1240 | /* Private ofconn functions. */ | |
1241 | ||
1242 | static const char * | |
1243 | ofconn_get_target(const struct ofconn *ofconn) | |
1244 | { | |
1245 | return rconn_get_target(ofconn->rconn); | |
1246 | } | |
1247 | ||
1248 | static struct ofconn * | |
9886b662 BP |
1249 | ofconn_create(struct connmgr *mgr, struct rconn *rconn, enum ofconn_type type, |
1250 | bool enable_async_msgs) | |
25010c68 | 1251 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 1252 | { |
da0158d1 | 1253 | struct ofconn *ofconn = xzalloc(sizeof *ofconn); |
19a87e36 | 1254 | ofconn->connmgr = mgr; |
417e7e66 | 1255 | ovs_list_push_back(&mgr->all_conns, &ofconn->node); |
19a87e36 BP |
1256 | ofconn->rconn = rconn; |
1257 | ofconn->type = type; | |
9886b662 | 1258 | ofconn->enable_async_msgs = enable_async_msgs; |
c4b31872 | 1259 | |
2b07c8b1 | 1260 | hmap_init(&ofconn->monitors); |
417e7e66 | 1261 | ovs_list_init(&ofconn->updates); |
2b07c8b1 | 1262 | |
777af88d | 1263 | hmap_init(&ofconn->bundles); |
51bb26fa | 1264 | ofconn->next_bundle_expiry_check = time_msec() + BUNDLE_EXPIRY_INTERVAL; |
777af88d | 1265 | |
fd4b7a0e BP |
1266 | hmap_init(&ofconn->assembler); |
1267 | ||
c4b31872 BP |
1268 | ofconn_flush(ofconn); |
1269 | ||
19a87e36 BP |
1270 | return ofconn; |
1271 | } | |
1272 | ||
c4b31872 BP |
1273 | /* Clears all of the state in 'ofconn' that should not persist from one |
1274 | * connection to the next. */ | |
7ee20df1 BP |
1275 | static void |
1276 | ofconn_flush(struct ofconn *ofconn) | |
3b0c6b56 | 1277 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 1278 | { |
696d1bcf BP |
1279 | ofconn_log_flow_mods(ofconn); |
1280 | ||
f4f1ea7e | 1281 | ofconn->role = OFPCR12_ROLE_EQUAL; |
eb12aa89 | 1282 | ofconn_set_protocol(ofconn, OFPUTIL_P_NONE); |
d8790c08 | 1283 | ofconn->packet_in_format = OFPUTIL_PACKET_IN_STD; |
c4b31872 | 1284 | |
c4b31872 BP |
1285 | rconn_packet_counter_destroy(ofconn->packet_in_counter); |
1286 | ofconn->packet_in_counter = rconn_packet_counter_create(); | |
da0158d1 | 1287 | for (int i = 0; i < N_SCHEDULERS; i++) { |
c4b31872 BP |
1288 | if (ofconn->schedulers[i]) { |
1289 | int rate, burst; | |
1290 | ||
1291 | pinsched_get_limits(ofconn->schedulers[i], &rate, &burst); | |
1292 | pinsched_destroy(ofconn->schedulers[i]); | |
1293 | ofconn->schedulers[i] = pinsched_create(rate, burst); | |
1294 | } | |
1295 | } | |
c4b31872 BP |
1296 | ofconn->miss_send_len = (ofconn->type == OFCONN_PRIMARY |
1297 | ? OFP_DEFAULT_MISS_SEND_LEN | |
1298 | : 0); | |
a7349929 | 1299 | ofconn->controller_id = 0; |
c4b31872 BP |
1300 | |
1301 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
1302 | ofconn->reply_counter = rconn_packet_counter_create(); | |
80d5aefd | 1303 | |
a930d4c5 BP |
1304 | free(ofconn->async_cfg); |
1305 | ofconn->async_cfg = NULL; | |
2b07c8b1 | 1306 | |
696d1bcf BP |
1307 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; |
1308 | ofconn->first_op = ofconn->last_op = LLONG_MIN; | |
1309 | ofconn->next_op_report = LLONG_MAX; | |
1310 | ofconn->op_backoff = LLONG_MIN; | |
1311 | ||
da0158d1 | 1312 | struct ofmonitor *monitor, *next_monitor; |
2b07c8b1 BP |
1313 | HMAP_FOR_EACH_SAFE (monitor, next_monitor, ofconn_node, |
1314 | &ofconn->monitors) { | |
1315 | ofmonitor_destroy(monitor); | |
1316 | } | |
1317 | rconn_packet_counter_destroy(ofconn->monitor_counter); | |
1318 | ofconn->monitor_counter = rconn_packet_counter_create(); | |
1319 | ofpbuf_list_delete(&ofconn->updates); /* ...but it should be empty. */ | |
fd4b7a0e BP |
1320 | |
1321 | ofpmp_assembler_clear(&ofconn->assembler); | |
7ee20df1 BP |
1322 | } |
1323 | ||
19a87e36 BP |
1324 | static void |
1325 | ofconn_destroy(struct ofconn *ofconn) | |
3b0c6b56 | 1326 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 | 1327 | { |
7ee20df1 BP |
1328 | ofconn_flush(ofconn); |
1329 | ||
b9320e51 JR |
1330 | /* Force clearing of want_packet_in_on_miss to keep the global count |
1331 | * accurate. */ | |
1332 | ofconn->controller_id = 1; | |
1333 | update_want_packet_in_on_miss(ofconn); | |
1334 | ||
19a87e36 BP |
1335 | if (ofconn->type == OFCONN_PRIMARY) { |
1336 | hmap_remove(&ofconn->connmgr->controllers, &ofconn->hmap_node); | |
1337 | } | |
1338 | ||
ff09bc08 | 1339 | bundle_remove_all(ofconn); |
475b8f06 | 1340 | hmap_destroy(&ofconn->bundles); |
777af88d | 1341 | |
92bbc96a | 1342 | hmap_destroy(&ofconn->monitors); |
417e7e66 | 1343 | ovs_list_remove(&ofconn->node); |
19a87e36 BP |
1344 | rconn_destroy(ofconn->rconn); |
1345 | rconn_packet_counter_destroy(ofconn->packet_in_counter); | |
1346 | rconn_packet_counter_destroy(ofconn->reply_counter); | |
2b07c8b1 | 1347 | rconn_packet_counter_destroy(ofconn->monitor_counter); |
fd4b7a0e BP |
1348 | |
1349 | hmap_destroy(&ofconn->assembler); | |
1350 | ||
19a87e36 BP |
1351 | free(ofconn); |
1352 | } | |
1353 | ||
1354 | /* Reconfigures 'ofconn' to match 'c'. 'ofconn' and 'c' must have the same | |
1355 | * target. */ | |
1356 | static void | |
1357 | ofconn_reconfigure(struct ofconn *ofconn, const struct ofproto_controller *c) | |
1358 | { | |
19a87e36 | 1359 | ofconn->band = c->band; |
065825e9 | 1360 | ofconn->enable_async_msgs = c->enable_async_msgs; |
19a87e36 BP |
1361 | |
1362 | rconn_set_max_backoff(ofconn->rconn, c->max_backoff); | |
1363 | ||
da0158d1 | 1364 | int probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0; |
19a87e36 BP |
1365 | rconn_set_probe_interval(ofconn->rconn, probe_interval); |
1366 | ||
1367 | ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit); | |
0442efd9 MM |
1368 | |
1369 | /* If dscp value changed reconnect. */ | |
1370 | if (c->dscp != rconn_get_dscp(ofconn->rconn)) { | |
1371 | rconn_set_dscp(ofconn->rconn, c->dscp); | |
1372 | rconn_reconnect(ofconn->rconn); | |
1373 | } | |
19a87e36 BP |
1374 | } |
1375 | ||
7ee20df1 BP |
1376 | /* Returns true if it makes sense for 'ofconn' to receive and process OpenFlow |
1377 | * messages. */ | |
1378 | static bool | |
1379 | ofconn_may_recv(const struct ofconn *ofconn) | |
1380 | { | |
a3d1ff00 | 1381 | int count = rconn_packet_counter_n_packets(ofconn->reply_counter); |
b20f4073 | 1382 | return count < OFCONN_REPLY_MAX; |
7ee20df1 BP |
1383 | } |
1384 | ||
19a87e36 BP |
1385 | static void |
1386 | ofconn_run(struct ofconn *ofconn, | |
b20f4073 | 1387 | void (*handle_openflow)(struct ofconn *, |
fd4b7a0e | 1388 | const struct ovs_list *msgs)) |
19a87e36 BP |
1389 | { |
1390 | struct connmgr *mgr = ofconn->connmgr; | |
19a87e36 | 1391 | |
da0158d1 | 1392 | for (size_t i = 0; i < N_SCHEDULERS; i++) { |
ca6ba700 | 1393 | struct ovs_list txq; |
a6f75961 BP |
1394 | |
1395 | pinsched_run(ofconn->schedulers[i], &txq); | |
1396 | do_send_packet_ins(ofconn, &txq); | |
19a87e36 BP |
1397 | } |
1398 | ||
1399 | rconn_run(ofconn->rconn); | |
1400 | ||
b20f4073 | 1401 | /* Limit the number of iterations to avoid starving other tasks. */ |
da0158d1 | 1402 | for (int i = 0; i < 50 && ofconn_may_recv(ofconn); i++) { |
b20f4073 BP |
1403 | struct ofpbuf *of_msg = rconn_recv(ofconn->rconn); |
1404 | if (!of_msg) { | |
1405 | break; | |
1406 | } | |
7ee20df1 | 1407 | |
b20f4073 BP |
1408 | if (mgr->fail_open) { |
1409 | fail_open_maybe_recover(mgr->fail_open); | |
19a87e36 | 1410 | } |
19a87e36 | 1411 | |
fd4b7a0e BP |
1412 | struct ovs_list msgs; |
1413 | enum ofperr error = ofpmp_assembler_execute(&ofconn->assembler, of_msg, | |
1414 | &msgs, time_msec()); | |
1415 | if (error) { | |
1416 | ofconn_send_error(ofconn, of_msg->data, error); | |
1417 | ofpbuf_delete(of_msg); | |
1418 | } else if (!ovs_list_is_empty(&msgs)) { | |
1419 | handle_openflow(ofconn, &msgs); | |
1420 | ofpbuf_list_delete(&msgs); | |
1421 | } | |
b20f4073 | 1422 | } |
696d1bcf | 1423 | |
51bb26fa JR |
1424 | long long int now = time_msec(); |
1425 | ||
1426 | if (now >= ofconn->next_bundle_expiry_check) { | |
1427 | ofconn->next_bundle_expiry_check = now + BUNDLE_EXPIRY_INTERVAL; | |
1428 | bundle_remove_expired(ofconn, now); | |
1429 | } | |
1430 | ||
1431 | if (now >= ofconn->next_op_report) { | |
696d1bcf BP |
1432 | ofconn_log_flow_mods(ofconn); |
1433 | } | |
1434 | ||
fd4b7a0e BP |
1435 | struct ofpbuf *error = ofpmp_assembler_run(&ofconn->assembler, |
1436 | time_msec()); | |
1437 | if (error) { | |
1438 | ofconn_send(ofconn, error, NULL); | |
1439 | } | |
1440 | ||
3b0c6b56 | 1441 | ovs_mutex_lock(&ofproto_mutex); |
19a87e36 BP |
1442 | if (!rconn_is_alive(ofconn->rconn)) { |
1443 | ofconn_destroy(ofconn); | |
7ee20df1 BP |
1444 | } else if (!rconn_is_connected(ofconn->rconn)) { |
1445 | ofconn_flush(ofconn); | |
19a87e36 | 1446 | } |
3b0c6b56 | 1447 | ovs_mutex_unlock(&ofproto_mutex); |
19a87e36 BP |
1448 | } |
1449 | ||
1450 | static void | |
b20f4073 | 1451 | ofconn_wait(struct ofconn *ofconn) |
19a87e36 | 1452 | { |
da0158d1 | 1453 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1454 | pinsched_wait(ofconn->schedulers[i]); |
1455 | } | |
1456 | rconn_run_wait(ofconn->rconn); | |
b20f4073 | 1457 | if (ofconn_may_recv(ofconn)) { |
19a87e36 | 1458 | rconn_recv_wait(ofconn->rconn); |
19a87e36 | 1459 | } |
696d1bcf BP |
1460 | if (ofconn->next_op_report != LLONG_MAX) { |
1461 | poll_timer_wait_until(ofconn->next_op_report); | |
1462 | } | |
fd4b7a0e | 1463 | poll_timer_wait_until(ofpmp_assembler_wait(&ofconn->assembler)); |
696d1bcf BP |
1464 | } |
1465 | ||
1466 | static void | |
1467 | ofconn_log_flow_mods(struct ofconn *ofconn) | |
1468 | { | |
1469 | int n_flow_mods = ofconn->n_add + ofconn->n_delete + ofconn->n_modify; | |
1470 | if (n_flow_mods) { | |
1471 | long long int ago = (time_msec() - ofconn->first_op) / 1000; | |
1472 | long long int interval = (ofconn->last_op - ofconn->first_op) / 1000; | |
1473 | struct ds s; | |
1474 | ||
1475 | ds_init(&s); | |
1476 | ds_put_format(&s, "%d flow_mods ", n_flow_mods); | |
1477 | if (interval == ago) { | |
1478 | ds_put_format(&s, "in the last %lld s", ago); | |
1479 | } else if (interval) { | |
1480 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1481 | interval, ago); | |
1482 | } else { | |
1483 | ds_put_format(&s, "%lld s ago", ago); | |
1484 | } | |
1485 | ||
1486 | ds_put_cstr(&s, " ("); | |
1487 | if (ofconn->n_add) { | |
1488 | ds_put_format(&s, "%d adds, ", ofconn->n_add); | |
1489 | } | |
1490 | if (ofconn->n_delete) { | |
1491 | ds_put_format(&s, "%d deletes, ", ofconn->n_delete); | |
1492 | } | |
1493 | if (ofconn->n_modify) { | |
1494 | ds_put_format(&s, "%d modifications, ", ofconn->n_modify); | |
1495 | } | |
1496 | s.length -= 2; | |
1497 | ds_put_char(&s, ')'); | |
1498 | ||
1499 | VLOG_INFO("%s: %s", rconn_get_name(ofconn->rconn), ds_cstr(&s)); | |
1500 | ds_destroy(&s); | |
1501 | ||
1502 | ofconn->n_add = ofconn->n_delete = ofconn->n_modify = 0; | |
1503 | } | |
1504 | ofconn->next_op_report = LLONG_MAX; | |
19a87e36 BP |
1505 | } |
1506 | ||
80d5aefd BP |
1507 | /* Returns true if 'ofconn' should receive asynchronous messages of the given |
1508 | * OAM_* 'type' and 'reason', which should be a OFPR_* value for OAM_PACKET_IN, | |
1509 | * a OFPPR_* value for OAM_PORT_STATUS, or an OFPRR_* value for | |
1510 | * OAM_FLOW_REMOVED. Returns false if the message should not be sent on | |
1511 | * 'ofconn'. */ | |
19a87e36 | 1512 | static bool |
80d5aefd | 1513 | ofconn_receives_async_msg(const struct ofconn *ofconn, |
98090482 | 1514 | enum ofputil_async_msg_type type, |
80d5aefd | 1515 | unsigned int reason) |
19a87e36 | 1516 | { |
cb22974d BP |
1517 | ovs_assert(reason < 32); |
1518 | ovs_assert((unsigned int) type < OAM_N_TYPES); | |
19a87e36 | 1519 | |
903f6c4f NS |
1520 | if (!rconn_is_connected(ofconn->rconn)) { |
1521 | return false; | |
1522 | } | |
1523 | ||
80d5aefd | 1524 | /* Keep the following code in sync with the documentation in the |
7c9afefd | 1525 | * "Asynchronous Messages" section in 'topics/design' */ |
80d5aefd BP |
1526 | |
1527 | if (ofconn->type == OFCONN_SERVICE && !ofconn->miss_send_len) { | |
1528 | /* Service connections don't get asynchronous messages unless they have | |
1529 | * explicitly asked for them by setting a nonzero miss send length. */ | |
f0fd1a17 | 1530 | return false; |
f0fd1a17 | 1531 | } |
80d5aefd | 1532 | |
a930d4c5 BP |
1533 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
1534 | uint32_t *masks = (ofconn->role == OFPCR12_ROLE_SLAVE | |
1535 | ? ac.slave | |
1536 | : ac.master); | |
1537 | return (masks[type] & (1u << reason)) != 0; | |
f0fd1a17 PS |
1538 | } |
1539 | ||
b9320e51 | 1540 | /* This function returns true to indicate that a packet_in message |
6b83a3c5 | 1541 | * for a "table-miss" should be sent to at least one controller. |
6b83a3c5 | 1542 | * |
b9320e51 | 1543 | * False otherwise. */ |
6b83a3c5 | 1544 | bool |
b9320e51 | 1545 | connmgr_wants_packet_in_on_miss(struct connmgr *mgr) |
6b83a3c5 | 1546 | { |
b9320e51 | 1547 | int count; |
3fc76ec0 | 1548 | |
b9320e51 JR |
1549 | atomic_read_relaxed(&mgr->want_packet_in_on_miss, &count); |
1550 | return count > 0; | |
6b83a3c5 SH |
1551 | } |
1552 | ||
19a87e36 BP |
1553 | /* Returns a human-readable name for an OpenFlow connection between 'mgr' and |
1554 | * 'target', suitable for use in log messages for identifying the connection. | |
1555 | * | |
1556 | * The name is dynamically allocated. The caller should free it (with free()) | |
1557 | * when it is no longer needed. */ | |
1558 | static char * | |
1559 | ofconn_make_name(const struct connmgr *mgr, const char *target) | |
1560 | { | |
1561 | return xasprintf("%s<->%s", mgr->name, target); | |
1562 | } | |
1563 | ||
1564 | static void | |
1565 | ofconn_set_rate_limit(struct ofconn *ofconn, int rate, int burst) | |
1566 | { | |
da0158d1 | 1567 | for (int i = 0; i < N_SCHEDULERS; i++) { |
19a87e36 BP |
1568 | struct pinsched **s = &ofconn->schedulers[i]; |
1569 | ||
1570 | if (rate > 0) { | |
1571 | if (!*s) { | |
1572 | *s = pinsched_create(rate, burst); | |
1573 | } else { | |
1574 | pinsched_set_limits(*s, rate, burst); | |
1575 | } | |
1576 | } else { | |
1577 | pinsched_destroy(*s); | |
1578 | *s = NULL; | |
1579 | } | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | static void | |
1584 | ofconn_send(const struct ofconn *ofconn, struct ofpbuf *msg, | |
1585 | struct rconn_packet_counter *counter) | |
1586 | { | |
982697a4 | 1587 | ofpmsg_update_length(msg); |
acb9da40 | 1588 | rconn_send(ofconn->rconn, msg, counter); |
19a87e36 BP |
1589 | } |
1590 | \f | |
1591 | /* Sending asynchronous messages. */ | |
1592 | ||
042b8f42 | 1593 | /* Sends an OFPT_PORT_STATUS message with 'new_pp' and 'reason' to appropriate |
2a6f78e0 BP |
1594 | * controllers managed by 'mgr'. For messages caused by a controller |
1595 | * OFPT_PORT_MOD, specify 'source' as the controller connection that sent the | |
042b8f42 BP |
1596 | * request; otherwise, specify 'source' as NULL. |
1597 | * | |
1598 | * If 'reason' is OFPPR_MODIFY and 'old_pp' is nonnull, then messages are | |
1599 | * suppressed in the case where the change would not be visible to a particular | |
1600 | * controller. For example, OpenFlow 1.0 does not have the OFPPS_LIVE flag, so | |
1601 | * this would suppress a change solely to that flag from being sent to an | |
1602 | * OpenFlow 1.0 controller. */ | |
19a87e36 | 1603 | void |
2a6f78e0 | 1604 | connmgr_send_port_status(struct connmgr *mgr, struct ofconn *source, |
042b8f42 BP |
1605 | const struct ofputil_phy_port *old_pp, |
1606 | const struct ofputil_phy_port *new_pp, | |
1607 | uint8_t reason) | |
19a87e36 BP |
1608 | { |
1609 | /* XXX Should limit the number of queued port status change messages. */ | |
042b8f42 | 1610 | struct ofputil_port_status new_ps = { reason, *new_pp }; |
19a87e36 | 1611 | |
042b8f42 | 1612 | struct ofconn *ofconn; |
19a87e36 | 1613 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
80d5aefd | 1614 | if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) { |
2a6f78e0 BP |
1615 | /* Before 1.5, OpenFlow specified that OFPT_PORT_MOD should not |
1616 | * generate OFPT_PORT_STATUS messages. That requirement was a | |
1617 | * relic of how OpenFlow originally supported a single controller, | |
1618 | * so that one could expect the controller to already know the | |
1619 | * changes it had made. | |
1620 | * | |
1621 | * EXT-338 changes OpenFlow 1.5 OFPT_PORT_MOD to send | |
1622 | * OFPT_PORT_STATUS messages to every controller. This is | |
1623 | * obviously more useful in the multi-controller case. We could | |
1624 | * always implement it that way in OVS, but that would risk | |
1625 | * confusing controllers that are intended for single-controller | |
1626 | * use only. (Imagine a controller that generates an OFPT_PORT_MOD | |
1627 | * in response to any OFPT_PORT_STATUS!) | |
1628 | * | |
1629 | * So this compromises: for OpenFlow 1.4 and earlier, it generates | |
1630 | * OFPT_PORT_STATUS for OFPT_PORT_MOD, but not back to the | |
1631 | * originating controller. In a single-controller environment, in | |
1632 | * particular, this means that it will never generate | |
1633 | * OFPT_PORT_STATUS for OFPT_PORT_MOD at all. */ | |
1634 | if (ofconn == source | |
1635 | && rconn_get_version(ofconn->rconn) < OFP15_VERSION) { | |
1636 | continue; | |
1637 | } | |
1638 | ||
042b8f42 BP |
1639 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1640 | struct ofpbuf *msg = ofputil_encode_port_status(&new_ps, protocol); | |
1641 | if (reason == OFPPR_MODIFY && old_pp) { | |
1642 | struct ofputil_port_status old_ps = { reason, *old_pp }; | |
1643 | struct ofpbuf *old_msg = ofputil_encode_port_status(&old_ps, | |
1644 | protocol); | |
1645 | bool suppress = ofpbuf_equal(msg, old_msg); | |
1646 | ofpbuf_delete(old_msg); | |
1647 | ||
1648 | if (suppress) { | |
1649 | ofpbuf_delete(msg); | |
1650 | continue; | |
1651 | } | |
1652 | } | |
1653 | ||
9e1fd49b | 1654 | ofconn_send(ofconn, msg, NULL); |
19a87e36 | 1655 | } |
19a87e36 BP |
1656 | } |
1657 | } | |
1658 | ||
3c35db62 NR |
1659 | /* Sends an OFPT_REQUESTFORWARD message with 'request' and 'reason' to |
1660 | * appropriate controllers managed by 'mgr'. For messages caused by a | |
1661 | * controller OFPT_GROUP_MOD and OFPT_METER_MOD, specify 'source' as the | |
1662 | * controller connection that sent the request; otherwise, specify 'source' | |
1663 | * as NULL. */ | |
1664 | void | |
1665 | connmgr_send_requestforward(struct connmgr *mgr, const struct ofconn *source, | |
1666 | const struct ofputil_requestforward *rf) | |
1667 | { | |
1668 | struct ofconn *ofconn; | |
1669 | ||
1670 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
98a9272b ZW |
1671 | /* METER_MOD only supported in OF13 and up. */ |
1672 | if (rf->reason == OFPRFR_METER_MOD | |
1673 | && rconn_get_version(ofconn->rconn) < OFP13_VERSION) { | |
1674 | continue; | |
1675 | } | |
1676 | ||
3c35db62 | 1677 | if (ofconn_receives_async_msg(ofconn, OAM_REQUESTFORWARD, rf->reason) |
3c35db62 NR |
1678 | && ofconn != source) { |
1679 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); | |
1680 | ofconn_send(ofconn, ofputil_encode_requestforward(rf, protocol), | |
1681 | NULL); | |
1682 | } | |
1683 | } | |
1684 | } | |
1685 | ||
19a87e36 | 1686 | /* Sends an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message based on 'fr' to |
25010c68 JR |
1687 | * appropriate controllers managed by 'mgr'. |
1688 | * | |
1689 | * This may be called from the RCU thread. */ | |
19a87e36 BP |
1690 | void |
1691 | connmgr_send_flow_removed(struct connmgr *mgr, | |
1692 | const struct ofputil_flow_removed *fr) | |
25010c68 | 1693 | OVS_REQUIRES(ofproto_mutex) |
19a87e36 BP |
1694 | { |
1695 | struct ofconn *ofconn; | |
1696 | ||
1697 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
80d5aefd | 1698 | if (ofconn_receives_async_msg(ofconn, OAM_FLOW_REMOVED, fr->reason)) { |
80d5aefd BP |
1699 | /* Account flow expirations as replies to OpenFlow requests. That |
1700 | * works because preventing OpenFlow requests from being processed | |
1701 | * also prevents new flows from being added (and expiring). (It | |
1702 | * also prevents processing OpenFlow requests that would not add | |
1703 | * new flows, so it is imperfect.) */ | |
da0158d1 BP |
1704 | struct ofpbuf *msg = ofputil_encode_flow_removed( |
1705 | fr, ofconn_get_protocol(ofconn)); | |
80d5aefd | 1706 | ofconn_send_reply(ofconn, msg); |
19a87e36 | 1707 | } |
6c6eedc5 SJ |
1708 | } |
1709 | } | |
1710 | ||
1711 | /* Sends an OFPT_TABLE_STATUS message with 'reason' to appropriate controllers | |
1712 | * managed by 'mgr'. When the table state changes, the controller needs to be | |
1713 | * informed with the OFPT_TABLE_STATUS message. The reason values | |
1714 | * OFPTR_VACANCY_DOWN and OFPTR_VACANCY_UP identify a vacancy message. The | |
1715 | * vacancy events are generated when the remaining space in the flow table | |
1716 | * changes and crosses one of the vacancy thereshold specified by | |
1717 | * OFPT_TABLE_MOD. */ | |
1718 | void | |
1719 | connmgr_send_table_status(struct connmgr *mgr, | |
1720 | const struct ofputil_table_desc *td, | |
1721 | uint8_t reason) | |
1722 | { | |
da0158d1 BP |
1723 | struct ofputil_table_status ts = { |
1724 | .reason = reason, | |
1725 | .desc = *td | |
1726 | }; | |
6c6eedc5 | 1727 | |
da0158d1 | 1728 | struct ofconn *ofconn; |
6c6eedc5 SJ |
1729 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
1730 | if (ofconn_receives_async_msg(ofconn, OAM_TABLE_STATUS, reason)) { | |
1731 | struct ofpbuf *msg; | |
1732 | ||
1733 | msg = ofputil_encode_table_status(&ts, | |
1734 | ofconn_get_protocol(ofconn)); | |
1735 | if (msg) { | |
1736 | ofconn_send(ofconn, msg, NULL); | |
1737 | } | |
1738 | } | |
19a87e36 BP |
1739 | } |
1740 | } | |
1741 | ||
78bd1cd0 | 1742 | /* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as |
77ab5fd2 | 1743 | * necessary according to their individual configurations. */ |
19a87e36 | 1744 | void |
a2b53dec BP |
1745 | connmgr_send_async_msg(struct connmgr *mgr, |
1746 | const struct ofproto_async_msg *am) | |
19a87e36 | 1747 | { |
29ebe880 | 1748 | struct ofconn *ofconn; |
19a87e36 | 1749 | |
19a87e36 | 1750 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
9bfe9334 BP |
1751 | enum ofputil_protocol protocol = ofconn_get_protocol(ofconn); |
1752 | if (protocol == OFPUTIL_P_NONE || !rconn_is_connected(ofconn->rconn) | |
a2b53dec BP |
1753 | || ofconn->controller_id != am->controller_id |
1754 | || !ofconn_receives_async_msg(ofconn, am->oam, | |
4d617a87 | 1755 | am->pin.up.base.reason)) { |
9bfe9334 | 1756 | continue; |
19a87e36 | 1757 | } |
9bfe9334 | 1758 | |
77ab5fd2 | 1759 | struct ofpbuf *msg = ofputil_encode_packet_in_private( |
c184807c | 1760 | &am->pin.up, protocol, ofconn->packet_in_format); |
9bfe9334 BP |
1761 | |
1762 | struct ovs_list txq; | |
4d617a87 BP |
1763 | bool is_miss = (am->pin.up.base.reason == OFPR_NO_MATCH || |
1764 | am->pin.up.base.reason == OFPR_EXPLICIT_MISS || | |
1765 | am->pin.up.base.reason == OFPR_IMPLICIT_MISS); | |
9bfe9334 | 1766 | pinsched_send(ofconn->schedulers[is_miss], |
4d617a87 | 1767 | am->pin.up.base.flow_metadata.flow.in_port.ofp_port, |
a2b53dec | 1768 | msg, &txq); |
9bfe9334 | 1769 | do_send_packet_ins(ofconn, &txq); |
19a87e36 | 1770 | } |
19a87e36 BP |
1771 | } |
1772 | ||
19a87e36 | 1773 | static void |
ca6ba700 | 1774 | do_send_packet_ins(struct ofconn *ofconn, struct ovs_list *txq) |
19a87e36 | 1775 | { |
5f03c983 | 1776 | struct ofpbuf *pin; |
19a87e36 | 1777 | |
5f03c983 | 1778 | LIST_FOR_EACH_POP (pin, list_node, txq) { |
e95f1d01 BP |
1779 | if (rconn_send_with_limit(ofconn->rconn, pin, |
1780 | ofconn->packet_in_counter, 100) == EAGAIN) { | |
7ed58d4a | 1781 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(5, 5); |
e95f1d01 | 1782 | |
7ed58d4a | 1783 | VLOG_INFO_RL(&rll, "%s: dropping packet-in due to queue overflow", |
e95f1d01 BP |
1784 | rconn_get_name(ofconn->rconn)); |
1785 | } | |
a6f75961 | 1786 | } |
19a87e36 | 1787 | } |
19a87e36 BP |
1788 | \f |
1789 | /* Fail-open settings. */ | |
1790 | ||
1791 | /* Returns the failure handling mode (OFPROTO_FAIL_SECURE or | |
1792 | * OFPROTO_FAIL_STANDALONE) for 'mgr'. */ | |
1793 | enum ofproto_fail_mode | |
1794 | connmgr_get_fail_mode(const struct connmgr *mgr) | |
1795 | { | |
1796 | return mgr->fail_mode; | |
1797 | } | |
1798 | ||
1799 | /* Sets the failure handling mode for 'mgr' to 'fail_mode' (either | |
1800 | * OFPROTO_FAIL_SECURE or OFPROTO_FAIL_STANDALONE). */ | |
1801 | void | |
1802 | connmgr_set_fail_mode(struct connmgr *mgr, enum ofproto_fail_mode fail_mode) | |
1803 | { | |
08fd19f0 BP |
1804 | if (mgr->fail_mode != fail_mode) { |
1805 | mgr->fail_mode = fail_mode; | |
1806 | update_fail_open(mgr); | |
1807 | if (!connmgr_has_controllers(mgr)) { | |
1808 | ofproto_flush_flows(mgr->ofproto); | |
1809 | } | |
1810 | } | |
19a87e36 BP |
1811 | } |
1812 | \f | |
1813 | /* Fail-open implementation. */ | |
1814 | ||
1815 | /* Returns the longest probe interval among the primary controllers configured | |
1816 | * on 'mgr'. Returns 0 if there are no primary controllers. */ | |
1817 | int | |
1818 | connmgr_get_max_probe_interval(const struct connmgr *mgr) | |
1819 | { | |
da0158d1 | 1820 | int max_probe_interval = 0; |
19a87e36 | 1821 | |
da0158d1 | 1822 | const struct ofconn *ofconn; |
19a87e36 BP |
1823 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { |
1824 | int probe_interval = rconn_get_probe_interval(ofconn->rconn); | |
1825 | max_probe_interval = MAX(max_probe_interval, probe_interval); | |
1826 | } | |
1827 | return max_probe_interval; | |
1828 | } | |
1829 | ||
1830 | /* Returns the number of seconds for which all of 'mgr's primary controllers | |
1831 | * have been disconnected. Returns 0 if 'mgr' has no primary controllers. */ | |
1832 | int | |
1833 | connmgr_failure_duration(const struct connmgr *mgr) | |
1834 | { | |
19a87e36 BP |
1835 | if (!connmgr_has_controllers(mgr)) { |
1836 | return 0; | |
1837 | } | |
1838 | ||
da0158d1 BP |
1839 | int min_failure_duration = INT_MAX; |
1840 | ||
1841 | const struct ofconn *ofconn; | |
19a87e36 BP |
1842 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { |
1843 | int failure_duration = rconn_failure_duration(ofconn->rconn); | |
1844 | min_failure_duration = MIN(min_failure_duration, failure_duration); | |
1845 | } | |
1846 | return min_failure_duration; | |
1847 | } | |
1848 | ||
1849 | /* Returns true if at least one primary controller is connected (regardless of | |
1850 | * whether those controllers are believed to have authenticated and accepted | |
1851 | * this switch), false if none of them are connected. */ | |
1852 | bool | |
1853 | connmgr_is_any_controller_connected(const struct connmgr *mgr) | |
1854 | { | |
1855 | const struct ofconn *ofconn; | |
1856 | ||
1857 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1858 | if (rconn_is_connected(ofconn->rconn)) { | |
1859 | return true; | |
1860 | } | |
1861 | } | |
1862 | return false; | |
1863 | } | |
1864 | ||
1865 | /* Returns true if at least one primary controller is believed to have | |
1866 | * authenticated and accepted this switch, false otherwise. */ | |
1867 | bool | |
1868 | connmgr_is_any_controller_admitted(const struct connmgr *mgr) | |
1869 | { | |
1870 | const struct ofconn *ofconn; | |
1871 | ||
1872 | HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) { | |
1873 | if (rconn_is_admitted(ofconn->rconn)) { | |
1874 | return true; | |
1875 | } | |
1876 | } | |
1877 | return false; | |
1878 | } | |
19a87e36 BP |
1879 | \f |
1880 | /* In-band configuration. */ | |
1881 | ||
1882 | static bool any_extras_changed(const struct connmgr *, | |
1883 | const struct sockaddr_in *extras, size_t n); | |
1884 | ||
1885 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'mgr''s | |
1886 | * in-band control should guarantee access, in the same way that in-band | |
1887 | * control guarantees access to OpenFlow controllers. */ | |
1888 | void | |
1889 | connmgr_set_extra_in_band_remotes(struct connmgr *mgr, | |
1890 | const struct sockaddr_in *extras, size_t n) | |
1891 | { | |
1892 | if (!any_extras_changed(mgr, extras, n)) { | |
1893 | return; | |
1894 | } | |
1895 | ||
1896 | free(mgr->extra_in_band_remotes); | |
1897 | mgr->n_extra_remotes = n; | |
1898 | mgr->extra_in_band_remotes = xmemdup(extras, n * sizeof *extras); | |
1899 | ||
1900 | update_in_band_remotes(mgr); | |
1901 | } | |
1902 | ||
1903 | /* Sets the OpenFlow queue used by flows set up by in-band control on | |
1904 | * 'mgr' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
1905 | * flows will use the default queue. */ | |
1906 | void | |
1907 | connmgr_set_in_band_queue(struct connmgr *mgr, int queue_id) | |
1908 | { | |
1909 | if (queue_id != mgr->in_band_queue) { | |
1910 | mgr->in_band_queue = queue_id; | |
1911 | update_in_band_remotes(mgr); | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | static bool | |
1916 | any_extras_changed(const struct connmgr *mgr, | |
1917 | const struct sockaddr_in *extras, size_t n) | |
1918 | { | |
19a87e36 BP |
1919 | if (n != mgr->n_extra_remotes) { |
1920 | return true; | |
1921 | } | |
1922 | ||
da0158d1 | 1923 | for (size_t i = 0; i < n; i++) { |
19a87e36 BP |
1924 | const struct sockaddr_in *old = &mgr->extra_in_band_remotes[i]; |
1925 | const struct sockaddr_in *new = &extras[i]; | |
1926 | ||
1927 | if (old->sin_addr.s_addr != new->sin_addr.s_addr || | |
1928 | old->sin_port != new->sin_port) { | |
1929 | return true; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | return false; | |
1934 | } | |
1935 | \f | |
1936 | /* In-band implementation. */ | |
1937 | ||
1938 | bool | |
f7f1ea29 | 1939 | connmgr_has_in_band(struct connmgr *mgr) |
19a87e36 | 1940 | { |
f7f1ea29 | 1941 | return mgr->in_band != NULL; |
19a87e36 BP |
1942 | } |
1943 | \f | |
1944 | /* Fail-open and in-band implementation. */ | |
1945 | ||
1946 | /* Called by 'ofproto' after all flows have been flushed, to allow fail-open | |
7ee20df1 BP |
1947 | * and standalone mode to re-create their flows. |
1948 | * | |
1949 | * In-band control has more sophisticated code that manages flows itself. */ | |
19a87e36 BP |
1950 | void |
1951 | connmgr_flushed(struct connmgr *mgr) | |
15aaf599 | 1952 | OVS_EXCLUDED(ofproto_mutex) |
19a87e36 | 1953 | { |
19a87e36 BP |
1954 | if (mgr->fail_open) { |
1955 | fail_open_flushed(mgr->fail_open); | |
1956 | } | |
08fd19f0 BP |
1957 | |
1958 | /* If there are no controllers and we're in standalone mode, set up a flow | |
1959 | * that matches every packet and directs them to OFPP_NORMAL (which goes to | |
1960 | * us). Otherwise, the switch is in secure mode and we won't pass any | |
1961 | * traffic until a controller has been defined and it tells us to do so. */ | |
1962 | if (!connmgr_has_controllers(mgr) | |
1963 | && mgr->fail_mode == OFPROTO_FAIL_STANDALONE) { | |
f25d0cf3 | 1964 | struct ofpbuf ofpacts; |
81a76618 | 1965 | struct match match; |
08fd19f0 | 1966 | |
024d93f6 | 1967 | ofpbuf_init(&ofpacts, sizeof(struct ofpact_output)); |
f25d0cf3 | 1968 | ofpact_put_OUTPUT(&ofpacts)->port = OFPP_NORMAL; |
f25d0cf3 | 1969 | |
81a76618 | 1970 | match_init_catchall(&match); |
6fd6ed71 PS |
1971 | ofproto_add_flow(mgr->ofproto, &match, 0, ofpacts.data, |
1972 | ofpacts.size); | |
f25d0cf3 BP |
1973 | |
1974 | ofpbuf_uninit(&ofpacts); | |
08fd19f0 | 1975 | } |
19a87e36 | 1976 | } |
3fbbcba7 BP |
1977 | |
1978 | /* Returns the number of hidden rules created by the in-band and fail-open | |
1979 | * implementations in table 0. (Subtracting this count from the number of | |
d79e3d70 | 1980 | * rules in the table 0 classifier, as maintained in struct oftable, yields |
3fbbcba7 BP |
1981 | * the number of flows that OVS should report via OpenFlow for table 0.) */ |
1982 | int | |
1983 | connmgr_count_hidden_rules(const struct connmgr *mgr) | |
1984 | { | |
1985 | int n_hidden = 0; | |
1986 | if (mgr->in_band) { | |
1987 | n_hidden += in_band_count_rules(mgr->in_band); | |
1988 | } | |
1989 | if (mgr->fail_open) { | |
1990 | n_hidden += fail_open_count_rules(mgr->fail_open); | |
1991 | } | |
1992 | return n_hidden; | |
1993 | } | |
19a87e36 BP |
1994 | \f |
1995 | /* Creates a new ofservice for 'target' in 'mgr'. Returns 0 if successful, | |
1996 | * otherwise a positive errno value. | |
1997 | * | |
1998 | * ofservice_reconfigure() must be called to fully configure the new | |
1999 | * ofservice. */ | |
2000 | static int | |
00401ef0 SH |
2001 | ofservice_create(struct connmgr *mgr, const char *target, |
2002 | uint32_t allowed_versions, uint8_t dscp) | |
19a87e36 | 2003 | { |
19a87e36 | 2004 | struct pvconn *pvconn; |
da0158d1 | 2005 | int error = pvconn_open(target, allowed_versions, dscp, &pvconn); |
19a87e36 BP |
2006 | if (error) { |
2007 | return error; | |
2008 | } | |
2009 | ||
da0158d1 | 2010 | struct ofservice *ofservice = xzalloc(sizeof *ofservice); |
19a87e36 BP |
2011 | hmap_insert(&mgr->services, &ofservice->node, hash_string(target, 0)); |
2012 | ofservice->pvconn = pvconn; | |
90ef0206 | 2013 | ofservice->allowed_versions = allowed_versions; |
19a87e36 BP |
2014 | |
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | static void | |
2019 | ofservice_destroy(struct connmgr *mgr, struct ofservice *ofservice) | |
2020 | { | |
2021 | hmap_remove(&mgr->services, &ofservice->node); | |
2022 | pvconn_close(ofservice->pvconn); | |
2023 | free(ofservice); | |
2024 | } | |
2025 | ||
2026 | static void | |
2027 | ofservice_reconfigure(struct ofservice *ofservice, | |
2028 | const struct ofproto_controller *c) | |
2029 | { | |
2030 | ofservice->probe_interval = c->probe_interval; | |
2031 | ofservice->rate_limit = c->rate_limit; | |
2032 | ofservice->burst_limit = c->burst_limit; | |
9886b662 | 2033 | ofservice->enable_async_msgs = c->enable_async_msgs; |
f125905c | 2034 | ofservice->dscp = c->dscp; |
19a87e36 BP |
2035 | } |
2036 | ||
2037 | /* Finds and returns the ofservice within 'mgr' that has the given | |
2038 | * 'target', or a null pointer if none exists. */ | |
2039 | static struct ofservice * | |
2040 | ofservice_lookup(struct connmgr *mgr, const char *target) | |
2041 | { | |
2042 | struct ofservice *ofservice; | |
2043 | ||
2044 | HMAP_FOR_EACH_WITH_HASH (ofservice, node, hash_string(target, 0), | |
2045 | &mgr->services) { | |
2046 | if (!strcmp(pvconn_get_name(ofservice->pvconn), target)) { | |
2047 | return ofservice; | |
2048 | } | |
2049 | } | |
2050 | return NULL; | |
2051 | } | |
2b07c8b1 BP |
2052 | \f |
2053 | /* Flow monitors (NXST_FLOW_MONITOR). */ | |
2054 | ||
2055 | /* A counter incremented when something significant happens to an OpenFlow | |
2056 | * rule. | |
2057 | * | |
2058 | * - When a rule is added, its 'add_seqno' and 'modify_seqno' are set to | |
2059 | * the current value (which is then incremented). | |
2060 | * | |
2061 | * - When a rule is modified, its 'modify_seqno' is set to the current | |
2062 | * value (which is then incremented). | |
2063 | * | |
2064 | * Thus, by comparing an old value of monitor_seqno against a rule's | |
2065 | * 'add_seqno', one can tell whether the rule was added before or after the old | |
2066 | * value was read, and similarly for 'modify_seqno'. | |
2067 | * | |
2068 | * 32 bits should normally be sufficient (and would be nice, to save space in | |
2069 | * each rule) but then we'd have to have some special cases for wraparound. | |
2070 | * | |
2071 | * We initialize monitor_seqno to 1 to allow 0 to be used as an invalid | |
2072 | * value. */ | |
2073 | static uint64_t monitor_seqno = 1; | |
2074 | ||
2075 | COVERAGE_DEFINE(ofmonitor_pause); | |
2076 | COVERAGE_DEFINE(ofmonitor_resume); | |
2077 | ||
2078 | enum ofperr | |
2079 | ofmonitor_create(const struct ofputil_flow_monitor_request *request, | |
2080 | struct ofconn *ofconn, struct ofmonitor **monitorp) | |
4cd1bc9d | 2081 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2082 | { |
2b07c8b1 BP |
2083 | *monitorp = NULL; |
2084 | ||
da0158d1 | 2085 | struct ofmonitor *m = ofmonitor_lookup(ofconn, request->id); |
2b07c8b1 | 2086 | if (m) { |
04f9f286 | 2087 | return OFPERR_OFPMOFC_MONITOR_EXISTS; |
2b07c8b1 BP |
2088 | } |
2089 | ||
2090 | m = xmalloc(sizeof *m); | |
2091 | m->ofconn = ofconn; | |
2092 | hmap_insert(&ofconn->monitors, &m->ofconn_node, hash_int(request->id, 0)); | |
2093 | m->id = request->id; | |
2094 | m->flags = request->flags; | |
2095 | m->out_port = request->out_port; | |
2096 | m->table_id = request->table_id; | |
5cb7a798 | 2097 | minimatch_init(&m->match, &request->match); |
2b07c8b1 BP |
2098 | |
2099 | *monitorp = m; | |
2100 | return 0; | |
2101 | } | |
2102 | ||
2103 | struct ofmonitor * | |
2104 | ofmonitor_lookup(struct ofconn *ofconn, uint32_t id) | |
4cd1bc9d | 2105 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2106 | { |
2107 | struct ofmonitor *m; | |
2108 | ||
2109 | HMAP_FOR_EACH_IN_BUCKET (m, ofconn_node, hash_int(id, 0), | |
2110 | &ofconn->monitors) { | |
2111 | if (m->id == id) { | |
2112 | return m; | |
2113 | } | |
2114 | } | |
2115 | return NULL; | |
2116 | } | |
2117 | ||
2118 | void | |
2119 | ofmonitor_destroy(struct ofmonitor *m) | |
4cd1bc9d | 2120 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2121 | { |
2122 | if (m) { | |
5684eb74 | 2123 | minimatch_destroy(&m->match); |
2b07c8b1 BP |
2124 | hmap_remove(&m->ofconn->monitors, &m->ofconn_node); |
2125 | free(m); | |
2126 | } | |
2127 | } | |
2128 | ||
2129 | void | |
2130 | ofmonitor_report(struct connmgr *mgr, struct rule *rule, | |
2131 | enum nx_flow_update_event event, | |
2132 | enum ofp_flow_removed_reason reason, | |
cdbdeeda SH |
2133 | const struct ofconn *abbrev_ofconn, ovs_be32 abbrev_xid, |
2134 | const struct rule_actions *old_actions) | |
15aaf599 | 2135 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2136 | { |
834fe5cb BP |
2137 | if (rule_is_hidden(rule)) { |
2138 | return; | |
2139 | } | |
2140 | ||
da0158d1 | 2141 | enum nx_flow_monitor_flags update; |
2b07c8b1 BP |
2142 | switch (event) { |
2143 | case NXFME_ADDED: | |
2144 | update = NXFMF_ADD; | |
2145 | rule->add_seqno = rule->modify_seqno = monitor_seqno++; | |
2146 | break; | |
2147 | ||
2148 | case NXFME_DELETED: | |
2149 | update = NXFMF_DELETE; | |
2150 | break; | |
2151 | ||
2152 | case NXFME_MODIFIED: | |
2153 | update = NXFMF_MODIFY; | |
2154 | rule->modify_seqno = monitor_seqno++; | |
2155 | break; | |
2156 | ||
2157 | default: | |
2158 | case NXFME_ABBREV: | |
428b2edd | 2159 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2160 | } |
2161 | ||
da0158d1 | 2162 | struct ofconn *ofconn; |
2b07c8b1 | 2163 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
2b07c8b1 BP |
2164 | if (ofconn->monitor_paused) { |
2165 | /* Only send NXFME_DELETED notifications for flows that were added | |
2166 | * before we paused. */ | |
2167 | if (event != NXFME_DELETED | |
2168 | || rule->add_seqno > ofconn->monitor_paused) { | |
2169 | continue; | |
2170 | } | |
2171 | } | |
2172 | ||
da0158d1 BP |
2173 | enum nx_flow_monitor_flags flags = 0; |
2174 | struct ofmonitor *m; | |
2b07c8b1 BP |
2175 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2176 | if (m->flags & update | |
2177 | && (m->table_id == 0xff || m->table_id == rule->table_id) | |
cdbdeeda SH |
2178 | && (ofproto_rule_has_out_port(rule, m->out_port) |
2179 | || (old_actions | |
2180 | && ofpacts_output_to_port(old_actions->ofpacts, | |
2181 | old_actions->ofpacts_len, | |
2182 | m->out_port))) | |
2b07c8b1 BP |
2183 | && cls_rule_is_loose_match(&rule->cr, &m->match)) { |
2184 | flags |= m->flags; | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | if (flags) { | |
417e7e66 | 2189 | if (ovs_list_is_empty(&ofconn->updates)) { |
2b07c8b1 BP |
2190 | ofputil_start_flow_update(&ofconn->updates); |
2191 | ofconn->sent_abbrev_update = false; | |
2192 | } | |
2193 | ||
200d6ac4 SH |
2194 | if (flags & NXFMF_OWN || ofconn != abbrev_ofconn |
2195 | || ofconn->monitor_paused) { | |
2b07c8b1 BP |
2196 | struct ofputil_flow_update fu; |
2197 | ||
2198 | fu.event = event; | |
2199 | fu.reason = event == NXFME_DELETED ? reason : 0; | |
2b07c8b1 BP |
2200 | fu.table_id = rule->table_id; |
2201 | fu.cookie = rule->flow_cookie; | |
140f36ba | 2202 | minimatch_expand(&rule->cr.match, &fu.match); |
6b140a4e | 2203 | fu.priority = rule->cr.priority; |
a3779dbc | 2204 | |
d10976b7 | 2205 | ovs_mutex_lock(&rule->mutex); |
a3779dbc EJ |
2206 | fu.idle_timeout = rule->idle_timeout; |
2207 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 2208 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 2209 | |
2b07c8b1 | 2210 | if (flags & NXFMF_ACTIONS) { |
da0158d1 BP |
2211 | const struct rule_actions *actions |
2212 | = rule_get_actions(rule); | |
06a0f3e2 BP |
2213 | fu.ofpacts = actions->ofpacts; |
2214 | fu.ofpacts_len = actions->ofpacts_len; | |
2b07c8b1 BP |
2215 | } else { |
2216 | fu.ofpacts = NULL; | |
2217 | fu.ofpacts_len = 0; | |
2218 | } | |
140f36ba DDP |
2219 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2220 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2221 | } else if (!ofconn->sent_abbrev_update) { |
2222 | struct ofputil_flow_update fu; | |
2223 | ||
2224 | fu.event = NXFME_ABBREV; | |
2225 | fu.xid = abbrev_xid; | |
140f36ba DDP |
2226 | ofputil_append_flow_update(&fu, &ofconn->updates, |
2227 | ofproto_get_tun_tab(rule->ofproto)); | |
2b07c8b1 BP |
2228 | |
2229 | ofconn->sent_abbrev_update = true; | |
2230 | } | |
2231 | } | |
2232 | } | |
2233 | } | |
2234 | ||
2235 | void | |
2236 | ofmonitor_flush(struct connmgr *mgr) | |
4cd1bc9d | 2237 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2238 | { |
2239 | struct ofconn *ofconn; | |
2240 | ||
2241 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { | |
6d91e84c | 2242 | struct rconn_packet_counter *counter = ofconn->monitor_counter; |
2b07c8b1 | 2243 | |
6d91e84c | 2244 | struct ofpbuf *msg; |
5f03c983 | 2245 | LIST_FOR_EACH_POP (msg, list_node, &ofconn->updates) { |
6d91e84c BP |
2246 | ofconn_send(ofconn, msg, counter); |
2247 | } | |
2248 | ||
2249 | if (!ofconn->monitor_paused | |
2250 | && rconn_packet_counter_n_bytes(counter) > 128 * 1024) { | |
6d91e84c BP |
2251 | COVERAGE_INC(ofmonitor_pause); |
2252 | ofconn->monitor_paused = monitor_seqno++; | |
da0158d1 BP |
2253 | struct ofpbuf *pause = ofpraw_alloc_xid( |
2254 | OFPRAW_NXT_FLOW_MONITOR_PAUSED, OFP10_VERSION, htonl(0), 0); | |
6d91e84c | 2255 | ofconn_send(ofconn, pause, counter); |
2b07c8b1 BP |
2256 | } |
2257 | } | |
2258 | } | |
2259 | ||
2260 | static void | |
2261 | ofmonitor_resume(struct ofconn *ofconn) | |
4cd1bc9d | 2262 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 2263 | { |
a8e547c1 | 2264 | struct rule_collection rules; |
a8e547c1 | 2265 | rule_collection_init(&rules); |
da0158d1 BP |
2266 | |
2267 | struct ofmonitor *m; | |
2b07c8b1 BP |
2268 | HMAP_FOR_EACH (m, ofconn_node, &ofconn->monitors) { |
2269 | ofmonitor_collect_resume_rules(m, ofconn->monitor_paused, &rules); | |
2270 | } | |
2271 | ||
da0158d1 | 2272 | struct ovs_list msgs = OVS_LIST_INITIALIZER(&msgs); |
2b07c8b1 BP |
2273 | ofmonitor_compose_refresh_updates(&rules, &msgs); |
2274 | ||
da0158d1 BP |
2275 | struct ofpbuf *resumed = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_MONITOR_RESUMED, |
2276 | OFP10_VERSION, htonl(0), 0); | |
417e7e66 | 2277 | ovs_list_push_back(&msgs, &resumed->list_node); |
2b07c8b1 BP |
2278 | ofconn_send_replies(ofconn, &msgs); |
2279 | ||
2280 | ofconn->monitor_paused = 0; | |
2281 | } | |
2282 | ||
4cd1bc9d BP |
2283 | static bool |
2284 | ofmonitor_may_resume(const struct ofconn *ofconn) | |
2285 | OVS_REQUIRES(ofproto_mutex) | |
2286 | { | |
2287 | return (ofconn->monitor_paused != 0 | |
2288 | && !rconn_packet_counter_n_packets(ofconn->monitor_counter)); | |
2289 | } | |
2290 | ||
2b07c8b1 BP |
2291 | static void |
2292 | ofmonitor_run(struct connmgr *mgr) | |
2293 | { | |
4cd1bc9d | 2294 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2295 | struct ofconn *ofconn; |
2b07c8b1 | 2296 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
4cd1bc9d | 2297 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2298 | COVERAGE_INC(ofmonitor_resume); |
2299 | ofmonitor_resume(ofconn); | |
2300 | } | |
2301 | } | |
4cd1bc9d | 2302 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 BP |
2303 | } |
2304 | ||
2305 | static void | |
2306 | ofmonitor_wait(struct connmgr *mgr) | |
2307 | { | |
4cd1bc9d | 2308 | ovs_mutex_lock(&ofproto_mutex); |
da0158d1 | 2309 | struct ofconn *ofconn; |
2b07c8b1 | 2310 | LIST_FOR_EACH (ofconn, node, &mgr->all_conns) { |
4cd1bc9d | 2311 | if (ofmonitor_may_resume(ofconn)) { |
2b07c8b1 BP |
2312 | poll_immediate_wake(); |
2313 | } | |
2314 | } | |
4cd1bc9d | 2315 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 2316 | } |
a2b53dec BP |
2317 | |
2318 | void | |
2319 | ofproto_async_msg_free(struct ofproto_async_msg *am) | |
2320 | { | |
4d617a87 BP |
2321 | free(am->pin.up.base.packet); |
2322 | free(am->pin.up.base.userdata); | |
77ab5fd2 BP |
2323 | free(am->pin.up.stack); |
2324 | free(am->pin.up.actions); | |
2325 | free(am->pin.up.action_set); | |
a2b53dec BP |
2326 | free(am); |
2327 | } |