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064af421 | 1 | /* |
922fed06 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 BP |
15 | */ |
16 | ||
17 | #include <config.h> | |
96fba48f | 18 | #include "dpif-provider.h" |
064af421 | 19 | |
064af421 BP |
20 | #include <ctype.h> |
21 | #include <errno.h> | |
064af421 | 22 | #include <inttypes.h> |
064af421 BP |
23 | #include <stdlib.h> |
24 | #include <string.h> | |
064af421 BP |
25 | |
26 | #include "coverage.h" | |
fceef209 | 27 | #include "dpctl.h" |
e14deea0 | 28 | #include "dp-packet.h" |
c4ea7529 | 29 | #include "dpif-netdev.h" |
3e8a2ad1 | 30 | #include "openvswitch/dynamic-string.h" |
064af421 | 31 | #include "flow.h" |
c3827f61 | 32 | #include "netdev.h" |
064af421 | 33 | #include "netlink.h" |
7fd91025 | 34 | #include "odp-execute.h" |
064af421 | 35 | #include "odp-util.h" |
25d436fb | 36 | #include "openvswitch/ofp-print.h" |
f4248336 | 37 | #include "openvswitch/ofp-util.h" |
64c96779 | 38 | #include "openvswitch/ofpbuf.h" |
064af421 BP |
39 | #include "packets.h" |
40 | #include "poll-loop.h" | |
1bc50ef3 | 41 | #include "route-table.h" |
36f29fb1 | 42 | #include "seq.h" |
ee89ea7b | 43 | #include "openvswitch/shash.h" |
d0c23a1a | 44 | #include "sset.h" |
c97fb132 | 45 | #include "timeval.h" |
53902038 | 46 | #include "tnl-neigh-cache.h" |
a36de779 | 47 | #include "tnl-ports.h" |
064af421 | 48 | #include "util.h" |
78145f6e | 49 | #include "uuid.h" |
064af421 | 50 | #include "valgrind.h" |
e03c096d | 51 | #include "openvswitch/ofp-errors.h" |
e6211adc | 52 | #include "openvswitch/vlog.h" |
5136ce49 | 53 | |
d98e6007 | 54 | VLOG_DEFINE_THIS_MODULE(dpif); |
064af421 | 55 | |
d76f09ea BP |
56 | COVERAGE_DEFINE(dpif_destroy); |
57 | COVERAGE_DEFINE(dpif_port_add); | |
58 | COVERAGE_DEFINE(dpif_port_del); | |
59 | COVERAGE_DEFINE(dpif_flow_flush); | |
60 | COVERAGE_DEFINE(dpif_flow_get); | |
61 | COVERAGE_DEFINE(dpif_flow_put); | |
62 | COVERAGE_DEFINE(dpif_flow_del); | |
d76f09ea BP |
63 | COVERAGE_DEFINE(dpif_execute); |
64 | COVERAGE_DEFINE(dpif_purge); | |
7fd91025 | 65 | COVERAGE_DEFINE(dpif_execute_with_help); |
5dddf960 JR |
66 | COVERAGE_DEFINE(dpif_meter_set); |
67 | COVERAGE_DEFINE(dpif_meter_get); | |
68 | COVERAGE_DEFINE(dpif_meter_del); | |
d76f09ea | 69 | |
999401aa | 70 | static const struct dpif_class *base_dpif_classes[] = { |
93451a0a AS |
71 | #if defined(__linux__) || defined(_WIN32) |
72 | &dpif_netlink_class, | |
c83cdd30 | 73 | #endif |
72865317 | 74 | &dpif_netdev_class, |
c228a364 | 75 | }; |
999401aa JG |
76 | |
77 | struct registered_dpif_class { | |
d2d8fbeb | 78 | const struct dpif_class *dpif_class; |
999401aa JG |
79 | int refcount; |
80 | }; | |
81 | static struct shash dpif_classes = SHASH_INITIALIZER(&dpif_classes); | |
579a77e0 | 82 | static struct sset dpif_blacklist = SSET_INITIALIZER(&dpif_blacklist); |
c228a364 | 83 | |
5703b15f | 84 | /* Protects 'dpif_classes', including the refcount, and 'dpif_blacklist'. */ |
97be1538 | 85 | static struct ovs_mutex dpif_mutex = OVS_MUTEX_INITIALIZER; |
5703b15f | 86 | |
064af421 BP |
87 | /* Rate limit for individual messages going to or from the datapath, output at |
88 | * DBG level. This is very high because, if these are enabled, it is because | |
89 | * we really need to see them. */ | |
90 | static struct vlog_rate_limit dpmsg_rl = VLOG_RATE_LIMIT_INIT(600, 600); | |
91 | ||
92 | /* Not really much point in logging many dpif errors. */ | |
e2781405 | 93 | static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5); |
064af421 | 94 | |
feebdea2 BP |
95 | static void log_flow_message(const struct dpif *dpif, int error, |
96 | const char *operation, | |
97 | const struct nlattr *key, size_t key_len, | |
61fb711d | 98 | const struct nlattr *mask, size_t mask_len, |
70e5ed6f | 99 | const ovs_u128 *ufid, |
c97fb132 | 100 | const struct dpif_flow_stats *stats, |
feebdea2 | 101 | const struct nlattr *actions, size_t actions_len); |
96fba48f BP |
102 | static void log_operation(const struct dpif *, const char *operation, |
103 | int error); | |
96fba48f | 104 | static bool should_log_flow_message(int error); |
89625d1e BP |
105 | static void log_flow_put_message(struct dpif *, const struct dpif_flow_put *, |
106 | int error); | |
b99d3cee BP |
107 | static void log_flow_del_message(struct dpif *, const struct dpif_flow_del *, |
108 | int error); | |
89625d1e | 109 | static void log_execute_message(struct dpif *, const struct dpif_execute *, |
fc65bafc | 110 | bool subexecute, int error); |
6fe09f8c JS |
111 | static void log_flow_get_message(const struct dpif *, |
112 | const struct dpif_flow_get *, int error); | |
064af421 | 113 | |
36f29fb1 PS |
114 | /* Incremented whenever tnl route, arp, etc changes. */ |
115 | struct seq *tnl_conf_seq; | |
116 | ||
999401aa JG |
117 | static void |
118 | dp_initialize(void) | |
119 | { | |
eb8ed438 | 120 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
999401aa | 121 | |
eb8ed438 | 122 | if (ovsthread_once_start(&once)) { |
999401aa JG |
123 | int i; |
124 | ||
36f29fb1 | 125 | tnl_conf_seq = seq_create(); |
fceef209 | 126 | dpctl_unixctl_register(); |
a36de779 | 127 | tnl_port_map_init(); |
53902038 | 128 | tnl_neigh_cache_init(); |
b772066f | 129 | route_table_init(); |
1bc50ef3 | 130 | |
36f29fb1 PS |
131 | for (i = 0; i < ARRAY_SIZE(base_dpif_classes); i++) { |
132 | dp_register_provider(base_dpif_classes[i]); | |
133 | } | |
134 | ||
1bc50ef3 | 135 | ovsthread_once_done(&once); |
999401aa JG |
136 | } |
137 | } | |
138 | ||
5703b15f BP |
139 | static int |
140 | dp_register_provider__(const struct dpif_class *new_class) | |
999401aa JG |
141 | { |
142 | struct registered_dpif_class *registered_class; | |
c8973eb6 | 143 | int error; |
999401aa | 144 | |
579a77e0 EJ |
145 | if (sset_contains(&dpif_blacklist, new_class->type)) { |
146 | VLOG_DBG("attempted to register blacklisted provider: %s", | |
147 | new_class->type); | |
148 | return EINVAL; | |
149 | } | |
150 | ||
999401aa JG |
151 | if (shash_find(&dpif_classes, new_class->type)) { |
152 | VLOG_WARN("attempted to register duplicate datapath provider: %s", | |
153 | new_class->type); | |
154 | return EEXIST; | |
155 | } | |
1a6f1e2a | 156 | |
c8973eb6 DDP |
157 | error = new_class->init ? new_class->init() : 0; |
158 | if (error) { | |
159 | VLOG_WARN("failed to initialize %s datapath class: %s", | |
160 | new_class->type, ovs_strerror(error)); | |
161 | return error; | |
162 | } | |
163 | ||
999401aa | 164 | registered_class = xmalloc(sizeof *registered_class); |
d2d8fbeb | 165 | registered_class->dpif_class = new_class; |
999401aa JG |
166 | registered_class->refcount = 0; |
167 | ||
168 | shash_add(&dpif_classes, new_class->type, registered_class); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
5703b15f BP |
173 | /* Registers a new datapath provider. After successful registration, new |
174 | * datapaths of that type can be opened using dpif_open(). */ | |
175 | int | |
176 | dp_register_provider(const struct dpif_class *new_class) | |
177 | { | |
178 | int error; | |
179 | ||
97be1538 | 180 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 181 | error = dp_register_provider__(new_class); |
97be1538 | 182 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
183 | |
184 | return error; | |
185 | } | |
186 | ||
999401aa JG |
187 | /* Unregisters a datapath provider. 'type' must have been previously |
188 | * registered and not currently be in use by any dpifs. After unregistration | |
189 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
5703b15f BP |
190 | static int |
191 | dp_unregister_provider__(const char *type) | |
999401aa JG |
192 | { |
193 | struct shash_node *node; | |
194 | struct registered_dpif_class *registered_class; | |
195 | ||
196 | node = shash_find(&dpif_classes, type); | |
197 | if (!node) { | |
999401aa JG |
198 | return EAFNOSUPPORT; |
199 | } | |
200 | ||
201 | registered_class = node->data; | |
202 | if (registered_class->refcount) { | |
203 | VLOG_WARN("attempted to unregister in use datapath provider: %s", type); | |
204 | return EBUSY; | |
205 | } | |
206 | ||
207 | shash_delete(&dpif_classes, node); | |
208 | free(registered_class); | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
5703b15f BP |
213 | /* Unregisters a datapath provider. 'type' must have been previously |
214 | * registered and not currently be in use by any dpifs. After unregistration | |
215 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
216 | int | |
217 | dp_unregister_provider(const char *type) | |
218 | { | |
219 | int error; | |
220 | ||
221 | dp_initialize(); | |
222 | ||
97be1538 | 223 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 224 | error = dp_unregister_provider__(type); |
97be1538 | 225 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
226 | |
227 | return error; | |
228 | } | |
229 | ||
579a77e0 EJ |
230 | /* Blacklists a provider. Causes future calls of dp_register_provider() with |
231 | * a dpif_class which implements 'type' to fail. */ | |
232 | void | |
233 | dp_blacklist_provider(const char *type) | |
234 | { | |
97be1538 | 235 | ovs_mutex_lock(&dpif_mutex); |
579a77e0 | 236 | sset_add(&dpif_blacklist, type); |
97be1538 | 237 | ovs_mutex_unlock(&dpif_mutex); |
579a77e0 EJ |
238 | } |
239 | ||
5b5b11ea BP |
240 | /* Adds the types of all currently registered datapath providers to 'types'. |
241 | * The caller must first initialize the sset. */ | |
1a6f1e2a | 242 | void |
d0c23a1a | 243 | dp_enumerate_types(struct sset *types) |
1a6f1e2a | 244 | { |
999401aa | 245 | struct shash_node *node; |
1a6f1e2a | 246 | |
999401aa | 247 | dp_initialize(); |
1a6f1e2a | 248 | |
97be1538 | 249 | ovs_mutex_lock(&dpif_mutex); |
999401aa JG |
250 | SHASH_FOR_EACH(node, &dpif_classes) { |
251 | const struct registered_dpif_class *registered_class = node->data; | |
d0c23a1a | 252 | sset_add(types, registered_class->dpif_class->type); |
1a6f1e2a | 253 | } |
97be1538 | 254 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
255 | } |
256 | ||
257 | static void | |
258 | dp_class_unref(struct registered_dpif_class *rc) | |
259 | { | |
97be1538 | 260 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
261 | ovs_assert(rc->refcount); |
262 | rc->refcount--; | |
97be1538 | 263 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
264 | } |
265 | ||
266 | static struct registered_dpif_class * | |
267 | dp_class_lookup(const char *type) | |
268 | { | |
269 | struct registered_dpif_class *rc; | |
270 | ||
97be1538 | 271 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
272 | rc = shash_find_data(&dpif_classes, type); |
273 | if (rc) { | |
274 | rc->refcount++; | |
275 | } | |
97be1538 | 276 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
277 | |
278 | return rc; | |
1a6f1e2a JG |
279 | } |
280 | ||
281 | /* Clears 'names' and enumerates the names of all known created datapaths with | |
d0c23a1a | 282 | * the given 'type'. The caller must first initialize the sset. Returns 0 if |
1a6f1e2a | 283 | * successful, otherwise a positive errno value. |
d3d22744 BP |
284 | * |
285 | * Some kinds of datapaths might not be practically enumerable. This is not | |
286 | * considered an error. */ | |
287 | int | |
d0c23a1a | 288 | dp_enumerate_names(const char *type, struct sset *names) |
d3d22744 | 289 | { |
5703b15f | 290 | struct registered_dpif_class *registered_class; |
999401aa JG |
291 | const struct dpif_class *dpif_class; |
292 | int error; | |
d3d22744 | 293 | |
999401aa | 294 | dp_initialize(); |
d0c23a1a | 295 | sset_clear(names); |
1a6f1e2a | 296 | |
5703b15f | 297 | registered_class = dp_class_lookup(type); |
999401aa JG |
298 | if (!registered_class) { |
299 | VLOG_WARN("could not enumerate unknown type: %s", type); | |
300 | return EAFNOSUPPORT; | |
301 | } | |
1a6f1e2a | 302 | |
d2d8fbeb | 303 | dpif_class = registered_class->dpif_class; |
2240af25 DDP |
304 | error = (dpif_class->enumerate |
305 | ? dpif_class->enumerate(names, dpif_class) | |
306 | : 0); | |
999401aa JG |
307 | if (error) { |
308 | VLOG_WARN("failed to enumerate %s datapaths: %s", dpif_class->type, | |
10a89ef0 | 309 | ovs_strerror(error)); |
d3d22744 | 310 | } |
5703b15f | 311 | dp_class_unref(registered_class); |
1a6f1e2a | 312 | |
999401aa | 313 | return error; |
1a6f1e2a JG |
314 | } |
315 | ||
54ed8a5d BP |
316 | /* Parses 'datapath_name_', which is of the form [type@]name into its |
317 | * component pieces. 'name' and 'type' must be freed by the caller. | |
318 | * | |
319 | * The returned 'type' is normalized, as if by dpif_normalize_type(). */ | |
1a6f1e2a JG |
320 | void |
321 | dp_parse_name(const char *datapath_name_, char **name, char **type) | |
322 | { | |
323 | char *datapath_name = xstrdup(datapath_name_); | |
324 | char *separator; | |
325 | ||
326 | separator = strchr(datapath_name, '@'); | |
327 | if (separator) { | |
328 | *separator = '\0'; | |
329 | *type = datapath_name; | |
54ed8a5d | 330 | *name = xstrdup(dpif_normalize_type(separator + 1)); |
1a6f1e2a JG |
331 | } else { |
332 | *name = datapath_name; | |
54ed8a5d | 333 | *type = xstrdup(dpif_normalize_type(NULL)); |
1a6f1e2a | 334 | } |
d3d22744 BP |
335 | } |
336 | ||
96fba48f | 337 | static int |
1a6f1e2a | 338 | do_open(const char *name, const char *type, bool create, struct dpif **dpifp) |
064af421 | 339 | { |
96fba48f | 340 | struct dpif *dpif = NULL; |
064af421 | 341 | int error; |
999401aa JG |
342 | struct registered_dpif_class *registered_class; |
343 | ||
344 | dp_initialize(); | |
064af421 | 345 | |
3a225db7 | 346 | type = dpif_normalize_type(type); |
5703b15f | 347 | registered_class = dp_class_lookup(type); |
999401aa JG |
348 | if (!registered_class) { |
349 | VLOG_WARN("could not create datapath %s of unknown type %s", name, | |
350 | type); | |
351 | error = EAFNOSUPPORT; | |
352 | goto exit; | |
353 | } | |
354 | ||
4a387741 BP |
355 | error = registered_class->dpif_class->open(registered_class->dpif_class, |
356 | name, create, &dpif); | |
999401aa | 357 | if (!error) { |
cb22974d | 358 | ovs_assert(dpif->dpif_class == registered_class->dpif_class); |
5703b15f BP |
359 | } else { |
360 | dp_class_unref(registered_class); | |
064af421 | 361 | } |
064af421 | 362 | |
96fba48f BP |
363 | exit: |
364 | *dpifp = error ? NULL : dpif; | |
365 | return error; | |
064af421 BP |
366 | } |
367 | ||
1a6f1e2a JG |
368 | /* Tries to open an existing datapath named 'name' and type 'type'. Will fail |
369 | * if no datapath with 'name' and 'type' exists. 'type' may be either NULL or | |
370 | * the empty string to specify the default system type. Returns 0 if | |
371 | * successful, otherwise a positive errno value. On success stores a pointer | |
372 | * to the datapath in '*dpifp', otherwise a null pointer. */ | |
96fba48f | 373 | int |
1a6f1e2a | 374 | dpif_open(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 375 | { |
1a6f1e2a | 376 | return do_open(name, type, false, dpifp); |
064af421 BP |
377 | } |
378 | ||
1a6f1e2a JG |
379 | /* Tries to create and open a new datapath with the given 'name' and 'type'. |
380 | * 'type' may be either NULL or the empty string to specify the default system | |
381 | * type. Will fail if a datapath with 'name' and 'type' already exists. | |
382 | * Returns 0 if successful, otherwise a positive errno value. On success | |
383 | * stores a pointer to the datapath in '*dpifp', otherwise a null pointer. */ | |
064af421 | 384 | int |
1a6f1e2a | 385 | dpif_create(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 386 | { |
1a6f1e2a | 387 | return do_open(name, type, true, dpifp); |
96fba48f | 388 | } |
064af421 | 389 | |
1a6f1e2a JG |
390 | /* Tries to open a datapath with the given 'name' and 'type', creating it if it |
391 | * does not exist. 'type' may be either NULL or the empty string to specify | |
392 | * the default system type. Returns 0 if successful, otherwise a positive | |
393 | * errno value. On success stores a pointer to the datapath in '*dpifp', | |
394 | * otherwise a null pointer. */ | |
efacbce6 | 395 | int |
1a6f1e2a | 396 | dpif_create_and_open(const char *name, const char *type, struct dpif **dpifp) |
efacbce6 BP |
397 | { |
398 | int error; | |
399 | ||
1a6f1e2a | 400 | error = dpif_create(name, type, dpifp); |
efacbce6 | 401 | if (error == EEXIST || error == EBUSY) { |
1a6f1e2a | 402 | error = dpif_open(name, type, dpifp); |
efacbce6 BP |
403 | if (error) { |
404 | VLOG_WARN("datapath %s already exists but cannot be opened: %s", | |
10a89ef0 | 405 | name, ovs_strerror(error)); |
efacbce6 BP |
406 | } |
407 | } else if (error) { | |
10a89ef0 BP |
408 | VLOG_WARN("failed to create datapath %s: %s", |
409 | name, ovs_strerror(error)); | |
efacbce6 BP |
410 | } |
411 | return error; | |
412 | } | |
413 | ||
96fba48f BP |
414 | /* Closes and frees the connection to 'dpif'. Does not destroy the datapath |
415 | * itself; call dpif_delete() first, instead, if that is desirable. */ | |
416 | void | |
417 | dpif_close(struct dpif *dpif) | |
418 | { | |
419 | if (dpif) { | |
5703b15f | 420 | struct registered_dpif_class *rc; |
999401aa | 421 | |
5703b15f | 422 | rc = shash_find_data(&dpif_classes, dpif->dpif_class->type); |
999401aa | 423 | dpif_uninit(dpif, true); |
5703b15f | 424 | dp_class_unref(rc); |
064af421 BP |
425 | } |
426 | } | |
427 | ||
640e1b20 | 428 | /* Performs periodic work needed by 'dpif'. */ |
a36de779 | 429 | bool |
640e1b20 BP |
430 | dpif_run(struct dpif *dpif) |
431 | { | |
432 | if (dpif->dpif_class->run) { | |
a36de779 | 433 | return dpif->dpif_class->run(dpif); |
640e1b20 | 434 | } |
a36de779 | 435 | return false; |
640e1b20 BP |
436 | } |
437 | ||
438 | /* Arranges for poll_block() to wake up when dp_run() needs to be called for | |
439 | * 'dpif'. */ | |
440 | void | |
441 | dpif_wait(struct dpif *dpif) | |
442 | { | |
443 | if (dpif->dpif_class->wait) { | |
444 | dpif->dpif_class->wait(dpif); | |
445 | } | |
446 | } | |
447 | ||
1a6f1e2a JG |
448 | /* Returns the name of datapath 'dpif' prefixed with the type |
449 | * (for use in log messages). */ | |
b29ba128 BP |
450 | const char * |
451 | dpif_name(const struct dpif *dpif) | |
452 | { | |
1a6f1e2a JG |
453 | return dpif->full_name; |
454 | } | |
455 | ||
456 | /* Returns the name of datapath 'dpif' without the type | |
457 | * (for use in device names). */ | |
458 | const char * | |
459 | dpif_base_name(const struct dpif *dpif) | |
460 | { | |
461 | return dpif->base_name; | |
b29ba128 BP |
462 | } |
463 | ||
c7a26215 JP |
464 | /* Returns the type of datapath 'dpif'. */ |
465 | const char * | |
466 | dpif_type(const struct dpif *dpif) | |
467 | { | |
468 | return dpif->dpif_class->type; | |
469 | } | |
470 | ||
3a225db7 BP |
471 | /* Returns the fully spelled out name for the given datapath 'type'. |
472 | * | |
473 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
474 | * string might be the same even if they have different spellings. */ | |
475 | const char * | |
476 | dpif_normalize_type(const char *type) | |
477 | { | |
478 | return type && type[0] ? type : "system"; | |
479 | } | |
480 | ||
96fba48f BP |
481 | /* Destroys the datapath that 'dpif' is connected to, first removing all of its |
482 | * ports. After calling this function, it does not make sense to pass 'dpif' | |
483 | * to any functions other than dpif_name() or dpif_close(). */ | |
064af421 BP |
484 | int |
485 | dpif_delete(struct dpif *dpif) | |
486 | { | |
96fba48f BP |
487 | int error; |
488 | ||
064af421 | 489 | COVERAGE_INC(dpif_destroy); |
96fba48f | 490 | |
1acb6baa | 491 | error = dpif->dpif_class->destroy(dpif); |
96fba48f BP |
492 | log_operation(dpif, "delete", error); |
493 | return error; | |
064af421 BP |
494 | } |
495 | ||
96fba48f BP |
496 | /* Retrieves statistics for 'dpif' into 'stats'. Returns 0 if successful, |
497 | * otherwise a positive errno value. */ | |
064af421 | 498 | int |
a8d9304d | 499 | dpif_get_dp_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
064af421 | 500 | { |
1acb6baa | 501 | int error = dpif->dpif_class->get_stats(dpif, stats); |
96fba48f BP |
502 | if (error) { |
503 | memset(stats, 0, sizeof *stats); | |
504 | } | |
505 | log_operation(dpif, "get_stats", error); | |
506 | return error; | |
064af421 BP |
507 | } |
508 | ||
0aeaabc8 JP |
509 | const char * |
510 | dpif_port_open_type(const char *datapath_type, const char *port_type) | |
511 | { | |
5703b15f | 512 | struct registered_dpif_class *rc; |
0aeaabc8 JP |
513 | |
514 | datapath_type = dpif_normalize_type(datapath_type); | |
515 | ||
97be1538 | 516 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
517 | rc = shash_find_data(&dpif_classes, datapath_type); |
518 | if (rc && rc->dpif_class->port_open_type) { | |
519 | port_type = rc->dpif_class->port_open_type(rc->dpif_class, port_type); | |
0aeaabc8 | 520 | } |
97be1538 | 521 | ovs_mutex_unlock(&dpif_mutex); |
0aeaabc8 | 522 | |
5703b15f | 523 | return port_type; |
0aeaabc8 JP |
524 | } |
525 | ||
232dfa4a | 526 | /* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is |
4e022ec0 | 527 | * non-null and its value is not ODPP_NONE, then attempts to use the |
232dfa4a JP |
528 | * value as the port number. |
529 | * | |
530 | * If successful, returns 0 and sets '*port_nop' to the new port's port | |
531 | * number (if 'port_nop' is non-null). On failure, returns a positive | |
4e022ec0 | 532 | * errno value and sets '*port_nop' to ODPP_NONE (if 'port_nop' is |
232dfa4a | 533 | * non-null). */ |
064af421 | 534 | int |
4e022ec0 | 535 | dpif_port_add(struct dpif *dpif, struct netdev *netdev, odp_port_t *port_nop) |
064af421 | 536 | { |
c3827f61 | 537 | const char *netdev_name = netdev_get_name(netdev); |
4e022ec0 | 538 | odp_port_t port_no = ODPP_NONE; |
9ee3ae3e | 539 | int error; |
064af421 BP |
540 | |
541 | COVERAGE_INC(dpif_port_add); | |
9ee3ae3e | 542 | |
232dfa4a JP |
543 | if (port_nop) { |
544 | port_no = *port_nop; | |
545 | } | |
546 | ||
c3827f61 | 547 | error = dpif->dpif_class->port_add(dpif, netdev, &port_no); |
9ee3ae3e | 548 | if (!error) { |
9b56fe13 | 549 | VLOG_DBG_RL(&dpmsg_rl, "%s: added %s as port %"PRIu32, |
c3827f61 | 550 | dpif_name(dpif), netdev_name, port_no); |
064af421 | 551 | } else { |
9ee3ae3e | 552 | VLOG_WARN_RL(&error_rl, "%s: failed to add %s as port: %s", |
10a89ef0 | 553 | dpif_name(dpif), netdev_name, ovs_strerror(error)); |
4e022ec0 | 554 | port_no = ODPP_NONE; |
9ee3ae3e BP |
555 | } |
556 | if (port_nop) { | |
557 | *port_nop = port_no; | |
064af421 | 558 | } |
9ee3ae3e | 559 | return error; |
064af421 BP |
560 | } |
561 | ||
96fba48f BP |
562 | /* Attempts to remove 'dpif''s port number 'port_no'. Returns 0 if successful, |
563 | * otherwise a positive errno value. */ | |
064af421 | 564 | int |
4e022ec0 | 565 | dpif_port_del(struct dpif *dpif, odp_port_t port_no) |
064af421 | 566 | { |
96fba48f BP |
567 | int error; |
568 | ||
064af421 | 569 | COVERAGE_INC(dpif_port_del); |
96fba48f | 570 | |
1acb6baa | 571 | error = dpif->dpif_class->port_del(dpif, port_no); |
a1811296 | 572 | if (!error) { |
9b56fe13 | 573 | VLOG_DBG_RL(&dpmsg_rl, "%s: port_del(%"PRIu32")", |
a1811296 BP |
574 | dpif_name(dpif), port_no); |
575 | } else { | |
576 | log_operation(dpif, "port_del", error); | |
577 | } | |
96fba48f | 578 | return error; |
064af421 BP |
579 | } |
580 | ||
4c738a8d BP |
581 | /* Makes a deep copy of 'src' into 'dst'. */ |
582 | void | |
583 | dpif_port_clone(struct dpif_port *dst, const struct dpif_port *src) | |
584 | { | |
585 | dst->name = xstrdup(src->name); | |
586 | dst->type = xstrdup(src->type); | |
587 | dst->port_no = src->port_no; | |
588 | } | |
589 | ||
590 | /* Frees memory allocated to members of 'dpif_port'. | |
591 | * | |
592 | * Do not call this function on a dpif_port obtained from | |
593 | * dpif_port_dump_next(): that function retains ownership of the data in the | |
594 | * dpif_port. */ | |
595 | void | |
596 | dpif_port_destroy(struct dpif_port *dpif_port) | |
597 | { | |
598 | free(dpif_port->name); | |
599 | free(dpif_port->type); | |
600 | } | |
601 | ||
4afba28d JP |
602 | /* Checks if port named 'devname' exists in 'dpif'. If so, returns |
603 | * true; otherwise, returns false. */ | |
604 | bool | |
605 | dpif_port_exists(const struct dpif *dpif, const char *devname) | |
606 | { | |
607 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, NULL); | |
0f6a066f | 608 | if (error != 0 && error != ENODEV) { |
4afba28d | 609 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %s: %s", |
10a89ef0 | 610 | dpif_name(dpif), devname, ovs_strerror(error)); |
4afba28d JP |
611 | } |
612 | ||
613 | return !error; | |
614 | } | |
615 | ||
91364d18 IM |
616 | /* Refreshes configuration of 'dpif's port. */ |
617 | int | |
618 | dpif_port_set_config(struct dpif *dpif, odp_port_t port_no, | |
619 | const struct smap *cfg) | |
620 | { | |
621 | int error = 0; | |
622 | ||
623 | if (dpif->dpif_class->port_set_config) { | |
624 | error = dpif->dpif_class->port_set_config(dpif, port_no, cfg); | |
625 | if (error) { | |
626 | log_operation(dpif, "port_set_config", error); | |
627 | } | |
628 | } | |
629 | ||
630 | return error; | |
631 | } | |
632 | ||
96fba48f BP |
633 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and |
634 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
635 | * value. |
636 | * | |
0f6a066f DDP |
637 | * Retuns ENODEV if the port doesn't exist. |
638 | * | |
4c738a8d BP |
639 | * The caller owns the data in 'port' and must free it with |
640 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 | 641 | int |
4e022ec0 | 642 | dpif_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 643 | struct dpif_port *port) |
064af421 | 644 | { |
1acb6baa | 645 | int error = dpif->dpif_class->port_query_by_number(dpif, port_no, port); |
96fba48f | 646 | if (!error) { |
9b56fe13 | 647 | VLOG_DBG_RL(&dpmsg_rl, "%s: port %"PRIu32" is device %s", |
4c738a8d | 648 | dpif_name(dpif), port_no, port->name); |
064af421 | 649 | } else { |
96fba48f | 650 | memset(port, 0, sizeof *port); |
9b56fe13 | 651 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %"PRIu32": %s", |
10a89ef0 | 652 | dpif_name(dpif), port_no, ovs_strerror(error)); |
064af421 | 653 | } |
96fba48f | 654 | return error; |
064af421 BP |
655 | } |
656 | ||
96fba48f BP |
657 | /* Looks up port named 'devname' in 'dpif'. On success, returns 0 and |
658 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
659 | * value. |
660 | * | |
0f6a066f DDP |
661 | * Retuns ENODEV if the port doesn't exist. |
662 | * | |
4c738a8d BP |
663 | * The caller owns the data in 'port' and must free it with |
664 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 BP |
665 | int |
666 | dpif_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 667 | struct dpif_port *port) |
064af421 | 668 | { |
1acb6baa | 669 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, port); |
96fba48f | 670 | if (!error) { |
9b56fe13 | 671 | VLOG_DBG_RL(&dpmsg_rl, "%s: device %s is on port %"PRIu32, |
4c738a8d | 672 | dpif_name(dpif), devname, port->port_no); |
064af421 | 673 | } else { |
96fba48f BP |
674 | memset(port, 0, sizeof *port); |
675 | ||
0f6a066f | 676 | /* For ENODEV we use DBG level because the caller is probably |
d647f0a7 BP |
677 | * interested in whether 'dpif' actually has a port 'devname', so that |
678 | * it's not an issue worth logging if it doesn't. Other errors are | |
679 | * uncommon and more likely to indicate a real problem. */ | |
0f6a066f | 680 | VLOG_RL(&error_rl, error == ENODEV ? VLL_DBG : VLL_WARN, |
d647f0a7 | 681 | "%s: failed to query port %s: %s", |
10a89ef0 | 682 | dpif_name(dpif), devname, ovs_strerror(error)); |
064af421 | 683 | } |
96fba48f | 684 | return error; |
064af421 BP |
685 | } |
686 | ||
1954e6bb AW |
687 | /* Returns the Netlink PID value to supply in OVS_ACTION_ATTR_USERSPACE |
688 | * actions as the OVS_USERSPACE_ATTR_PID attribute's value, for use in | |
689 | * flows whose packets arrived on port 'port_no'. In the case where the | |
690 | * provider allocates multiple Netlink PIDs to a single port, it may use | |
691 | * 'hash' to spread load among them. The caller need not use a particular | |
692 | * hash function; a 5-tuple hash is suitable. | |
693 | * | |
694 | * (The datapath implementation might use some different hash function for | |
695 | * distributing packets received via flow misses among PIDs. This means | |
696 | * that packets received via flow misses might be reordered relative to | |
697 | * packets received via userspace actions. This is not ordinarily a | |
698 | * problem.) | |
98403001 | 699 | * |
4e022ec0 | 700 | * A 'port_no' of ODPP_NONE is a special case: it returns a reserved PID, not |
625b0720 BP |
701 | * allocated to any port, that the client may use for special purposes. |
702 | * | |
98403001 BP |
703 | * The return value is only meaningful when DPIF_UC_ACTION has been enabled in |
704 | * the 'dpif''s listen mask. It is allowed to change when DPIF_UC_ACTION is | |
705 | * disabled and then re-enabled, so a client that does that must be prepared to | |
706 | * update all of the flows that it installed that contain | |
707 | * OVS_ACTION_ATTR_USERSPACE actions. */ | |
708 | uint32_t | |
1954e6bb | 709 | dpif_port_get_pid(const struct dpif *dpif, odp_port_t port_no, uint32_t hash) |
98403001 BP |
710 | { |
711 | return (dpif->dpif_class->port_get_pid | |
1954e6bb | 712 | ? (dpif->dpif_class->port_get_pid)(dpif, port_no, hash) |
98403001 BP |
713 | : 0); |
714 | } | |
715 | ||
96fba48f BP |
716 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and copies |
717 | * the port's name into the 'name_size' bytes in 'name', ensuring that the | |
718 | * result is null-terminated. On failure, returns a positive errno value and | |
719 | * makes 'name' the empty string. */ | |
335562c0 | 720 | int |
4e022ec0 | 721 | dpif_port_get_name(struct dpif *dpif, odp_port_t port_no, |
335562c0 BP |
722 | char *name, size_t name_size) |
723 | { | |
4c738a8d | 724 | struct dpif_port port; |
335562c0 BP |
725 | int error; |
726 | ||
cb22974d | 727 | ovs_assert(name_size > 0); |
335562c0 BP |
728 | |
729 | error = dpif_port_query_by_number(dpif, port_no, &port); | |
730 | if (!error) { | |
4c738a8d BP |
731 | ovs_strlcpy(name, port.name, name_size); |
732 | dpif_port_destroy(&port); | |
335562c0 BP |
733 | } else { |
734 | *name = '\0'; | |
735 | } | |
736 | return error; | |
737 | } | |
738 | ||
b0ec0f27 | 739 | /* Initializes 'dump' to begin dumping the ports in a dpif. |
96fba48f | 740 | * |
b0ec0f27 BP |
741 | * This function provides no status indication. An error status for the entire |
742 | * dump operation is provided when it is completed by calling | |
743 | * dpif_port_dump_done(). | |
744 | */ | |
745 | void | |
746 | dpif_port_dump_start(struct dpif_port_dump *dump, const struct dpif *dpif) | |
747 | { | |
748 | dump->dpif = dpif; | |
749 | dump->error = dpif->dpif_class->port_dump_start(dpif, &dump->state); | |
750 | log_operation(dpif, "port_dump_start", dump->error); | |
751 | } | |
752 | ||
753 | /* Attempts to retrieve another port from 'dump', which must have been | |
4c738a8d | 754 | * initialized with dpif_port_dump_start(). On success, stores a new dpif_port |
b0ec0f27 | 755 | * into 'port' and returns true. On failure, returns false. |
96fba48f | 756 | * |
b0ec0f27 BP |
757 | * Failure might indicate an actual error or merely that the last port has been |
758 | * dumped. An error status for the entire dump operation is provided when it | |
4c738a8d BP |
759 | * is completed by calling dpif_port_dump_done(). |
760 | * | |
761 | * The dpif owns the data stored in 'port'. It will remain valid until at | |
762 | * least the next time 'dump' is passed to dpif_port_dump_next() or | |
763 | * dpif_port_dump_done(). */ | |
b0ec0f27 | 764 | bool |
4c738a8d | 765 | dpif_port_dump_next(struct dpif_port_dump *dump, struct dpif_port *port) |
064af421 | 766 | { |
b0ec0f27 | 767 | const struct dpif *dpif = dump->dpif; |
064af421 | 768 | |
b0ec0f27 BP |
769 | if (dump->error) { |
770 | return false; | |
771 | } | |
f4ba4c4f | 772 | |
b0ec0f27 BP |
773 | dump->error = dpif->dpif_class->port_dump_next(dpif, dump->state, port); |
774 | if (dump->error == EOF) { | |
775 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all ports", dpif_name(dpif)); | |
776 | } else { | |
777 | log_operation(dpif, "port_dump_next", dump->error); | |
778 | } | |
064af421 | 779 | |
b0ec0f27 BP |
780 | if (dump->error) { |
781 | dpif->dpif_class->port_dump_done(dpif, dump->state); | |
782 | return false; | |
f4ba4c4f | 783 | } |
b0ec0f27 BP |
784 | return true; |
785 | } | |
064af421 | 786 | |
b0ec0f27 BP |
787 | /* Completes port table dump operation 'dump', which must have been initialized |
788 | * with dpif_port_dump_start(). Returns 0 if the dump operation was | |
789 | * error-free, otherwise a positive errno value describing the problem. */ | |
790 | int | |
791 | dpif_port_dump_done(struct dpif_port_dump *dump) | |
792 | { | |
793 | const struct dpif *dpif = dump->dpif; | |
794 | if (!dump->error) { | |
795 | dump->error = dpif->dpif_class->port_dump_done(dpif, dump->state); | |
796 | log_operation(dpif, "port_dump_done", dump->error); | |
f4ba4c4f | 797 | } |
b0ec0f27 | 798 | return dump->error == EOF ? 0 : dump->error; |
064af421 BP |
799 | } |
800 | ||
e9e28be3 BP |
801 | /* Polls for changes in the set of ports in 'dpif'. If the set of ports in |
802 | * 'dpif' has changed, this function does one of the following: | |
803 | * | |
804 | * - Stores the name of the device that was added to or deleted from 'dpif' in | |
805 | * '*devnamep' and returns 0. The caller is responsible for freeing | |
806 | * '*devnamep' (with free()) when it no longer needs it. | |
807 | * | |
808 | * - Returns ENOBUFS and sets '*devnamep' to NULL. | |
809 | * | |
810 | * This function may also return 'false positives', where it returns 0 and | |
811 | * '*devnamep' names a device that was not actually added or deleted or it | |
812 | * returns ENOBUFS without any change. | |
813 | * | |
814 | * Returns EAGAIN if the set of ports in 'dpif' has not changed. May also | |
815 | * return other positive errno values to indicate that something has gone | |
816 | * wrong. */ | |
817 | int | |
818 | dpif_port_poll(const struct dpif *dpif, char **devnamep) | |
819 | { | |
1acb6baa | 820 | int error = dpif->dpif_class->port_poll(dpif, devnamep); |
e9e28be3 BP |
821 | if (error) { |
822 | *devnamep = NULL; | |
823 | } | |
824 | return error; | |
825 | } | |
826 | ||
827 | /* Arranges for the poll loop to wake up when port_poll(dpif) will return a | |
828 | * value other than EAGAIN. */ | |
829 | void | |
830 | dpif_port_poll_wait(const struct dpif *dpif) | |
831 | { | |
1acb6baa | 832 | dpif->dpif_class->port_poll_wait(dpif); |
e9e28be3 BP |
833 | } |
834 | ||
572b7068 | 835 | /* Extracts the flow stats for a packet. The 'flow' and 'packet' |
a7752d4a BP |
836 | * arguments must have been initialized through a call to flow_extract(). |
837 | * 'used' is stored into stats->used. */ | |
572b7068 | 838 | void |
cf62fa4c | 839 | dpif_flow_stats_extract(const struct flow *flow, const struct dp_packet *packet, |
a7752d4a | 840 | long long int used, struct dpif_flow_stats *stats) |
572b7068 | 841 | { |
e0eecb1c | 842 | stats->tcp_flags = ntohs(flow->tcp_flags); |
cf62fa4c | 843 | stats->n_bytes = dp_packet_size(packet); |
572b7068 | 844 | stats->n_packets = 1; |
a7752d4a | 845 | stats->used = used; |
572b7068 BP |
846 | } |
847 | ||
c97fb132 BP |
848 | /* Appends a human-readable representation of 'stats' to 's'. */ |
849 | void | |
850 | dpif_flow_stats_format(const struct dpif_flow_stats *stats, struct ds *s) | |
851 | { | |
852 | ds_put_format(s, "packets:%"PRIu64", bytes:%"PRIu64", used:", | |
853 | stats->n_packets, stats->n_bytes); | |
854 | if (stats->used) { | |
855 | ds_put_format(s, "%.3fs", (time_msec() - stats->used) / 1000.0); | |
856 | } else { | |
857 | ds_put_format(s, "never"); | |
858 | } | |
7393104d BP |
859 | if (stats->tcp_flags) { |
860 | ds_put_cstr(s, ", flags:"); | |
861 | packet_format_tcp_flags(s, stats->tcp_flags); | |
862 | } | |
c97fb132 BP |
863 | } |
864 | ||
7af12bd7 JS |
865 | /* Places the hash of the 'key_len' bytes starting at 'key' into '*hash'. */ |
866 | void | |
867 | dpif_flow_hash(const struct dpif *dpif OVS_UNUSED, | |
868 | const void *key, size_t key_len, ovs_u128 *hash) | |
869 | { | |
870 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
871 | static uint32_t secret; | |
872 | ||
873 | if (ovsthread_once_start(&once)) { | |
874 | secret = random_uint32(); | |
875 | ovsthread_once_done(&once); | |
876 | } | |
877 | hash_bytes128(key, key_len, secret, hash); | |
78145f6e | 878 | uuid_set_bits_v4((struct uuid *)hash); |
7af12bd7 JS |
879 | } |
880 | ||
96fba48f BP |
881 | /* Deletes all flows from 'dpif'. Returns 0 if successful, otherwise a |
882 | * positive errno value. */ | |
883 | int | |
884 | dpif_flow_flush(struct dpif *dpif) | |
064af421 | 885 | { |
96fba48f BP |
886 | int error; |
887 | ||
888 | COVERAGE_INC(dpif_flow_flush); | |
889 | ||
1acb6baa | 890 | error = dpif->dpif_class->flow_flush(dpif); |
96fba48f BP |
891 | log_operation(dpif, "flow_flush", error); |
892 | return error; | |
064af421 BP |
893 | } |
894 | ||
2c85851f JS |
895 | /* Attempts to install 'key' into the datapath, fetches it, then deletes it. |
896 | * Returns true if the datapath supported installing 'flow', false otherwise. | |
897 | */ | |
898 | bool | |
899 | dpif_probe_feature(struct dpif *dpif, const char *name, | |
bb71c96e AZ |
900 | const struct ofpbuf *key, const struct ofpbuf *actions, |
901 | const ovs_u128 *ufid) | |
2c85851f JS |
902 | { |
903 | struct dpif_flow flow; | |
904 | struct ofpbuf reply; | |
905 | uint64_t stub[DPIF_FLOW_BUFSIZE / 8]; | |
906 | bool enable_feature = false; | |
907 | int error; | |
bb71c96e AZ |
908 | const struct nlattr *nl_actions = actions ? actions->data : NULL; |
909 | const size_t nl_actions_size = actions ? actions->size : 0; | |
2c85851f | 910 | |
9ab0fce1 JS |
911 | /* Use DPIF_FP_MODIFY to cover the case where ovs-vswitchd is killed (and |
912 | * restarted) at just the right time such that feature probes from the | |
913 | * previous run are still present in the datapath. */ | |
914 | error = dpif_flow_put(dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY | DPIF_FP_PROBE, | |
bb71c96e AZ |
915 | key->data, key->size, NULL, 0, |
916 | nl_actions, nl_actions_size, | |
f5d317a1 | 917 | ufid, NON_PMD_CORE_ID, NULL); |
9ab0fce1 | 918 | if (error) { |
b52ac659 | 919 | if (error != EINVAL && error != EOVERFLOW) { |
2c85851f JS |
920 | VLOG_WARN("%s: %s flow probe failed (%s)", |
921 | dpif_name(dpif), name, ovs_strerror(error)); | |
922 | } | |
923 | return false; | |
924 | } | |
925 | ||
926 | ofpbuf_use_stack(&reply, &stub, sizeof stub); | |
6fd6ed71 | 927 | error = dpif_flow_get(dpif, key->data, key->size, ufid, |
f5d317a1 | 928 | NON_PMD_CORE_ID, &reply, &flow); |
2c85851f | 929 | if (!error |
bdd7ecf5 | 930 | && (!ufid || (flow.ufid_present |
2ff8484b | 931 | && ovs_u128_equals(*ufid, flow.ufid)))) { |
2c85851f JS |
932 | enable_feature = true; |
933 | } | |
934 | ||
6fd6ed71 | 935 | error = dpif_flow_del(dpif, key->data, key->size, ufid, |
f5d317a1 | 936 | NON_PMD_CORE_ID, NULL); |
2c85851f JS |
937 | if (error) { |
938 | VLOG_WARN("%s: failed to delete %s feature probe flow", | |
939 | dpif_name(dpif), name); | |
940 | } | |
941 | ||
942 | return enable_feature; | |
943 | } | |
944 | ||
6fe09f8c | 945 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_GET. */ |
96fba48f | 946 | int |
6fe09f8c | 947 | dpif_flow_get(struct dpif *dpif, |
70e5ed6f | 948 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 949 | const unsigned pmd_id, struct ofpbuf *buf, struct dpif_flow *flow) |
064af421 | 950 | { |
6fe09f8c JS |
951 | struct dpif_op *opp; |
952 | struct dpif_op op; | |
96fba48f | 953 | |
6fe09f8c JS |
954 | op.type = DPIF_OP_FLOW_GET; |
955 | op.u.flow_get.key = key; | |
956 | op.u.flow_get.key_len = key_len; | |
70e5ed6f | 957 | op.u.flow_get.ufid = ufid; |
1c1e46ed | 958 | op.u.flow_get.pmd_id = pmd_id; |
6fe09f8c | 959 | op.u.flow_get.buffer = buf; |
70e5ed6f JS |
960 | |
961 | memset(flow, 0, sizeof *flow); | |
6fe09f8c JS |
962 | op.u.flow_get.flow = flow; |
963 | op.u.flow_get.flow->key = key; | |
964 | op.u.flow_get.flow->key_len = key_len; | |
96fba48f | 965 | |
6fe09f8c JS |
966 | opp = &op; |
967 | dpif_operate(dpif, &opp, 1); | |
968 | ||
969 | return op.error; | |
064af421 BP |
970 | } |
971 | ||
1a0c894a | 972 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_PUT. */ |
064af421 | 973 | int |
ba25b8f4 | 974 | dpif_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, |
feebdea2 | 975 | const struct nlattr *key, size_t key_len, |
e6cc0bab | 976 | const struct nlattr *mask, size_t mask_len, |
feebdea2 | 977 | const struct nlattr *actions, size_t actions_len, |
bd5131ba | 978 | const ovs_u128 *ufid, const unsigned pmd_id, |
1c1e46ed | 979 | struct dpif_flow_stats *stats) |
064af421 | 980 | { |
1a0c894a BP |
981 | struct dpif_op *opp; |
982 | struct dpif_op op; | |
983 | ||
984 | op.type = DPIF_OP_FLOW_PUT; | |
985 | op.u.flow_put.flags = flags; | |
986 | op.u.flow_put.key = key; | |
987 | op.u.flow_put.key_len = key_len; | |
988 | op.u.flow_put.mask = mask; | |
989 | op.u.flow_put.mask_len = mask_len; | |
990 | op.u.flow_put.actions = actions; | |
991 | op.u.flow_put.actions_len = actions_len; | |
70e5ed6f | 992 | op.u.flow_put.ufid = ufid; |
1c1e46ed | 993 | op.u.flow_put.pmd_id = pmd_id; |
1a0c894a BP |
994 | op.u.flow_put.stats = stats; |
995 | ||
996 | opp = &op; | |
997 | dpif_operate(dpif, &opp, 1); | |
998 | ||
999 | return op.error; | |
064af421 BP |
1000 | } |
1001 | ||
1a0c894a | 1002 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_DEL. */ |
064af421 | 1003 | int |
feebdea2 | 1004 | dpif_flow_del(struct dpif *dpif, |
70e5ed6f | 1005 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 1006 | const unsigned pmd_id, struct dpif_flow_stats *stats) |
064af421 | 1007 | { |
1a0c894a BP |
1008 | struct dpif_op *opp; |
1009 | struct dpif_op op; | |
1010 | ||
1011 | op.type = DPIF_OP_FLOW_DEL; | |
1012 | op.u.flow_del.key = key; | |
1013 | op.u.flow_del.key_len = key_len; | |
70e5ed6f | 1014 | op.u.flow_del.ufid = ufid; |
1c1e46ed | 1015 | op.u.flow_del.pmd_id = pmd_id; |
1a0c894a | 1016 | op.u.flow_del.stats = stats; |
8e1ffd75 | 1017 | op.u.flow_del.terse = false; |
f1aa2072 | 1018 | |
1a0c894a BP |
1019 | opp = &op; |
1020 | dpif_operate(dpif, &opp, 1); | |
1021 | ||
1022 | return op.error; | |
064af421 BP |
1023 | } |
1024 | ||
ac64794a | 1025 | /* Creates and returns a new 'struct dpif_flow_dump' for iterating through the |
64bb477f JS |
1026 | * flows in 'dpif'. If 'terse' is true, then only UFID and statistics will |
1027 | * be returned in the dump. Otherwise, all fields will be returned. | |
ac64794a BP |
1028 | * |
1029 | * This function always successfully returns a dpif_flow_dump. Error | |
1030 | * reporting is deferred to dpif_flow_dump_destroy(). */ | |
1031 | struct dpif_flow_dump * | |
64bb477f | 1032 | dpif_flow_dump_create(const struct dpif *dpif, bool terse) |
e723fd32 | 1033 | { |
64bb477f | 1034 | return dpif->dpif_class->flow_dump_create(dpif, terse); |
e723fd32 JS |
1035 | } |
1036 | ||
ac64794a BP |
1037 | /* Destroys 'dump', which must have been created with dpif_flow_dump_create(). |
1038 | * All dpif_flow_dump_thread structures previously created for 'dump' must | |
1039 | * previously have been destroyed. | |
1040 | * | |
1041 | * Returns 0 if the dump operation was error-free, otherwise a positive errno | |
1042 | * value describing the problem. */ | |
1043 | int | |
1044 | dpif_flow_dump_destroy(struct dpif_flow_dump *dump) | |
e723fd32 | 1045 | { |
ac64794a BP |
1046 | const struct dpif *dpif = dump->dpif; |
1047 | int error = dpif->dpif_class->flow_dump_destroy(dump); | |
1048 | log_operation(dpif, "flow_dump_destroy", error); | |
1049 | return error == EOF ? 0 : error; | |
e723fd32 JS |
1050 | } |
1051 | ||
ac64794a BP |
1052 | /* Returns new thread-local state for use with dpif_flow_dump_next(). */ |
1053 | struct dpif_flow_dump_thread * | |
1054 | dpif_flow_dump_thread_create(struct dpif_flow_dump *dump) | |
064af421 | 1055 | { |
ac64794a | 1056 | return dump->dpif->dpif_class->flow_dump_thread_create(dump); |
064af421 BP |
1057 | } |
1058 | ||
ac64794a BP |
1059 | /* Releases 'thread'. */ |
1060 | void | |
1061 | dpif_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread) | |
704a1e09 | 1062 | { |
ac64794a | 1063 | thread->dpif->dpif_class->flow_dump_thread_destroy(thread); |
704a1e09 BP |
1064 | } |
1065 | ||
ac64794a BP |
1066 | /* Attempts to retrieve up to 'max_flows' more flows from 'thread'. Returns 0 |
1067 | * if and only if no flows remained to be retrieved, otherwise a positive | |
1068 | * number reflecting the number of elements in 'flows[]' that were updated. | |
1069 | * The number of flows returned might be less than 'max_flows' because | |
1070 | * fewer than 'max_flows' remained, because this particular datapath does not | |
1071 | * benefit from batching, or because an error occurred partway through | |
1072 | * retrieval. Thus, the caller should continue calling until a 0 return value, | |
1073 | * even if intermediate return values are less than 'max_flows'. | |
bdeadfdd | 1074 | * |
ac64794a BP |
1075 | * No error status is immediately provided. An error status for the entire |
1076 | * dump operation is provided when it is completed by calling | |
1077 | * dpif_flow_dump_destroy(). | |
bdeadfdd | 1078 | * |
ac64794a BP |
1079 | * All of the data stored into 'flows' is owned by the datapath, not by the |
1080 | * caller, and the caller must not modify or free it. The datapath guarantees | |
58df55ce JS |
1081 | * that it remains accessible and unchanged until the first of: |
1082 | * - The next call to dpif_flow_dump_next() for 'thread', or | |
1083 | * - The next rcu quiescent period. */ | |
704a1e09 | 1084 | int |
ac64794a BP |
1085 | dpif_flow_dump_next(struct dpif_flow_dump_thread *thread, |
1086 | struct dpif_flow *flows, int max_flows) | |
704a1e09 | 1087 | { |
ac64794a BP |
1088 | struct dpif *dpif = thread->dpif; |
1089 | int n; | |
1090 | ||
1091 | ovs_assert(max_flows > 0); | |
1092 | n = dpif->dpif_class->flow_dump_next(thread, flows, max_flows); | |
1093 | if (n > 0) { | |
1094 | struct dpif_flow *f; | |
1095 | ||
1096 | for (f = flows; f < &flows[n] && should_log_flow_message(0); f++) { | |
1097 | log_flow_message(dpif, 0, "flow_dump", | |
1098 | f->key, f->key_len, f->mask, f->mask_len, | |
70e5ed6f | 1099 | &f->ufid, &f->stats, f->actions, f->actions_len); |
ac64794a BP |
1100 | } |
1101 | } else { | |
1102 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all flows", dpif_name(dpif)); | |
1103 | } | |
1104 | return n; | |
064af421 BP |
1105 | } |
1106 | ||
7fd91025 BP |
1107 | struct dpif_execute_helper_aux { |
1108 | struct dpif *dpif; | |
1cceb31b | 1109 | const struct flow *flow; |
7fd91025 | 1110 | int error; |
076caa2f | 1111 | const struct nlattr *meter_action; /* Non-NULL, if have a meter action. */ |
7fd91025 BP |
1112 | }; |
1113 | ||
09f9da0b JR |
1114 | /* This is called for actions that need the context of the datapath to be |
1115 | * meaningful. */ | |
7fd91025 | 1116 | static void |
1895cc8d | 1117 | dpif_execute_helper_cb(void *aux_, struct dp_packet_batch *packets_, |
18b58592 | 1118 | const struct nlattr *action, bool may_steal) |
7fd91025 | 1119 | { |
758c456d | 1120 | struct dpif_execute_helper_aux *aux = aux_; |
09f9da0b | 1121 | int type = nl_attr_type(action); |
1895cc8d | 1122 | struct dp_packet *packet = packets_->packets[0]; |
8cbf4f47 | 1123 | |
1895cc8d | 1124 | ovs_assert(packets_->count == 1); |
758c456d | 1125 | |
09f9da0b | 1126 | switch ((enum ovs_action_attr)type) { |
076caa2f JR |
1127 | case OVS_ACTION_ATTR_METER: |
1128 | /* Maintain a pointer to the first meter action seen. */ | |
1129 | if (!aux->meter_action) { | |
1130 | aux->meter_action = action; | |
1131 | } | |
1132 | break; | |
1133 | ||
07659514 | 1134 | case OVS_ACTION_ATTR_CT: |
09f9da0b | 1135 | case OVS_ACTION_ATTR_OUTPUT: |
a36de779 PS |
1136 | case OVS_ACTION_ATTR_TUNNEL_PUSH: |
1137 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
09f9da0b | 1138 | case OVS_ACTION_ATTR_USERSPACE: |
2b651e44 BP |
1139 | case OVS_ACTION_ATTR_RECIRC: { |
1140 | struct dpif_execute execute; | |
1141 | struct ofpbuf execute_actions; | |
1142 | uint64_t stub[256 / 8]; | |
cf62fa4c | 1143 | struct pkt_metadata *md = &packet->md; |
2b651e44 | 1144 | |
076caa2f JR |
1145 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
1146 | ofpbuf_use_stub(&execute_actions, stub, sizeof stub); | |
1147 | ||
1148 | if (aux->meter_action) { | |
1149 | const struct nlattr *a = aux->meter_action; | |
1150 | ||
1151 | /* XXX: This code collects meter actions since the last action | |
1152 | * execution via the datapath to be executed right before the | |
1153 | * current action that needs to be executed by the datapath. | |
1154 | * This is only an approximation, but better than nothing. | |
1155 | * Fundamentally, we should have a mechanism by which the | |
1156 | * datapath could return the result of the meter action so that | |
1157 | * we could execute them at the right order. */ | |
1158 | do { | |
1159 | ofpbuf_put(&execute_actions, a, NLA_ALIGN(a->nla_len)); | |
1160 | /* Find next meter action before 'action', if any. */ | |
1161 | do { | |
1162 | a = nl_attr_next(a); | |
1163 | } while (a != action && | |
1164 | nl_attr_type(a) != OVS_ACTION_ATTR_METER); | |
1165 | } while (a != action); | |
1166 | } | |
1167 | ||
2b651e44 BP |
1168 | /* The Linux kernel datapath throws away the tunnel information |
1169 | * that we supply as metadata. We have to use a "set" action to | |
1170 | * supply it. */ | |
076caa2f JR |
1171 | if (md->tunnel.ip_dst) { |
1172 | odp_put_tunnel_action(&md->tunnel, &execute_actions); | |
1173 | } | |
2b651e44 BP |
1174 | ofpbuf_put(&execute_actions, action, NLA_ALIGN(action->nla_len)); |
1175 | ||
6fd6ed71 PS |
1176 | execute.actions = execute_actions.data; |
1177 | execute.actions_len = execute_actions.size; | |
2b651e44 BP |
1178 | } else { |
1179 | execute.actions = action; | |
1180 | execute.actions_len = NLA_ALIGN(action->nla_len); | |
1181 | } | |
1182 | ||
18b58592 AZ |
1183 | struct dp_packet *clone = NULL; |
1184 | uint32_t cutlen = dp_packet_get_cutlen(packet); | |
1185 | if (cutlen && (type == OVS_ACTION_ATTR_OUTPUT | |
1186 | || type == OVS_ACTION_ATTR_TUNNEL_PUSH | |
1187 | || type == OVS_ACTION_ATTR_TUNNEL_POP | |
1188 | || type == OVS_ACTION_ATTR_USERSPACE)) { | |
1189 | dp_packet_reset_cutlen(packet); | |
aaca4fe0 | 1190 | if (!may_steal) { |
18b58592 | 1191 | packet = clone = dp_packet_clone(packet); |
aaca4fe0 | 1192 | } |
aaca4fe0 | 1193 | dp_packet_set_size(packet, dp_packet_size(packet) - cutlen); |
aaca4fe0 WT |
1194 | } |
1195 | ||
8cbf4f47 | 1196 | execute.packet = packet; |
1cceb31b | 1197 | execute.flow = aux->flow; |
758c456d | 1198 | execute.needs_help = false; |
43f9ac0a | 1199 | execute.probe = false; |
27130224 | 1200 | execute.mtu = 0; |
1a0c894a | 1201 | aux->error = dpif_execute(aux->dpif, &execute); |
fc65bafc BP |
1202 | log_execute_message(aux->dpif, &execute, true, aux->error); |
1203 | ||
18b58592 AZ |
1204 | dp_packet_delete(clone); |
1205 | ||
076caa2f | 1206 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
2b651e44 | 1207 | ofpbuf_uninit(&execute_actions); |
076caa2f JR |
1208 | |
1209 | /* Do not re-use the same meters for later output actions. */ | |
1210 | aux->meter_action = NULL; | |
2b651e44 | 1211 | } |
09f9da0b | 1212 | break; |
2b651e44 | 1213 | } |
758c456d | 1214 | |
c6bf49f3 | 1215 | case OVS_ACTION_ATTR_HASH: |
09f9da0b JR |
1216 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1217 | case OVS_ACTION_ATTR_POP_VLAN: | |
1218 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
1219 | case OVS_ACTION_ATTR_POP_MPLS: | |
1220 | case OVS_ACTION_ATTR_SET: | |
6d670e7f | 1221 | case OVS_ACTION_ATTR_SET_MASKED: |
09f9da0b | 1222 | case OVS_ACTION_ATTR_SAMPLE: |
aaca4fe0 | 1223 | case OVS_ACTION_ATTR_TRUNC: |
6fcecb85 YY |
1224 | case OVS_ACTION_ATTR_PUSH_ETH: |
1225 | case OVS_ACTION_ATTR_POP_ETH: | |
535e3acf | 1226 | case OVS_ACTION_ATTR_CLONE: |
09f9da0b JR |
1227 | case OVS_ACTION_ATTR_UNSPEC: |
1228 | case __OVS_ACTION_ATTR_MAX: | |
1229 | OVS_NOT_REACHED(); | |
1230 | } | |
7fd91025 BP |
1231 | } |
1232 | ||
1233 | /* Executes 'execute' by performing most of the actions in userspace and | |
1234 | * passing the fully constructed packets to 'dpif' for output and userspace | |
1235 | * actions. | |
1236 | * | |
1237 | * This helps with actions that a given 'dpif' doesn't implement directly. */ | |
1238 | static int | |
758c456d | 1239 | dpif_execute_with_help(struct dpif *dpif, struct dpif_execute *execute) |
7fd91025 | 1240 | { |
076caa2f | 1241 | struct dpif_execute_helper_aux aux = {dpif, execute->flow, 0, NULL}; |
1895cc8d | 1242 | struct dp_packet_batch pb; |
7fd91025 BP |
1243 | |
1244 | COVERAGE_INC(dpif_execute_with_help); | |
1245 | ||
72c84bc2 | 1246 | dp_packet_batch_init_packet(&pb, execute->packet); |
1895cc8d | 1247 | odp_execute_actions(&aux, &pb, false, execute->actions, |
91088554 | 1248 | execute->actions_len, dpif_execute_helper_cb); |
7fd91025 BP |
1249 | return aux.error; |
1250 | } | |
1251 | ||
87e5119b BP |
1252 | /* Returns true if the datapath needs help executing 'execute'. */ |
1253 | static bool | |
1254 | dpif_execute_needs_help(const struct dpif_execute *execute) | |
1255 | { | |
1256 | return execute->needs_help || nl_attr_oversized(execute->actions_len); | |
1257 | } | |
1258 | ||
1a0c894a | 1259 | /* A dpif_operate() wrapper for performing a single DPIF_OP_EXECUTE. */ |
758c456d JR |
1260 | int |
1261 | dpif_execute(struct dpif *dpif, struct dpif_execute *execute) | |
89625d1e | 1262 | { |
1a0c894a BP |
1263 | if (execute->actions_len) { |
1264 | struct dpif_op *opp; | |
1265 | struct dpif_op op; | |
89625d1e | 1266 | |
1a0c894a BP |
1267 | op.type = DPIF_OP_EXECUTE; |
1268 | op.u.execute = *execute; | |
89625d1e | 1269 | |
1a0c894a BP |
1270 | opp = &op; |
1271 | dpif_operate(dpif, &opp, 1); | |
89625d1e | 1272 | |
1a0c894a BP |
1273 | return op.error; |
1274 | } else { | |
1275 | return 0; | |
1276 | } | |
89625d1e BP |
1277 | } |
1278 | ||
6bc60024 | 1279 | /* Executes each of the 'n_ops' operations in 'ops' on 'dpif', in the order in |
1a0c894a BP |
1280 | * which they are specified. Places each operation's results in the "output" |
1281 | * members documented in comments, and 0 in the 'error' member on success or a | |
1282 | * positive errno on failure. */ | |
6bc60024 | 1283 | void |
c2b565b5 | 1284 | dpif_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops) |
6bc60024 | 1285 | { |
1a0c894a BP |
1286 | while (n_ops > 0) { |
1287 | size_t chunk; | |
7fd91025 | 1288 | |
1a0c894a BP |
1289 | /* Count 'chunk', the number of ops that can be executed without |
1290 | * needing any help. Ops that need help should be rare, so we | |
1291 | * expect this to ordinarily be 'n_ops', that is, all the ops. */ | |
1292 | for (chunk = 0; chunk < n_ops; chunk++) { | |
1293 | struct dpif_op *op = ops[chunk]; | |
1294 | ||
1295 | if (op->type == DPIF_OP_EXECUTE | |
1296 | && dpif_execute_needs_help(&op->u.execute)) { | |
1297 | break; | |
1298 | } | |
1299 | } | |
7fd91025 | 1300 | |
1a0c894a BP |
1301 | if (chunk) { |
1302 | /* Execute a chunk full of ops that the dpif provider can | |
1303 | * handle itself, without help. */ | |
1304 | size_t i; | |
7fd91025 | 1305 | |
1a0c894a | 1306 | dpif->dpif_class->operate(dpif, ops, chunk); |
7fd91025 | 1307 | |
1a0c894a BP |
1308 | for (i = 0; i < chunk; i++) { |
1309 | struct dpif_op *op = ops[i]; | |
1310 | int error = op->error; | |
7fd91025 | 1311 | |
1a0c894a BP |
1312 | switch (op->type) { |
1313 | case DPIF_OP_FLOW_PUT: { | |
1314 | struct dpif_flow_put *put = &op->u.flow_put; | |
7fd91025 | 1315 | |
1a0c894a BP |
1316 | COVERAGE_INC(dpif_flow_put); |
1317 | log_flow_put_message(dpif, put, error); | |
1318 | if (error && put->stats) { | |
1319 | memset(put->stats, 0, sizeof *put->stats); | |
7fd91025 | 1320 | } |
1a0c894a | 1321 | break; |
7fd91025 BP |
1322 | } |
1323 | ||
6fe09f8c JS |
1324 | case DPIF_OP_FLOW_GET: { |
1325 | struct dpif_flow_get *get = &op->u.flow_get; | |
1326 | ||
1327 | COVERAGE_INC(dpif_flow_get); | |
6fe09f8c JS |
1328 | if (error) { |
1329 | memset(get->flow, 0, sizeof *get->flow); | |
1330 | } | |
72d52166 MC |
1331 | log_flow_get_message(dpif, get, error); |
1332 | ||
6fe09f8c JS |
1333 | break; |
1334 | } | |
1335 | ||
1a0c894a BP |
1336 | case DPIF_OP_FLOW_DEL: { |
1337 | struct dpif_flow_del *del = &op->u.flow_del; | |
7fd91025 | 1338 | |
1a0c894a BP |
1339 | COVERAGE_INC(dpif_flow_del); |
1340 | log_flow_del_message(dpif, del, error); | |
1341 | if (error && del->stats) { | |
1342 | memset(del->stats, 0, sizeof *del->stats); | |
1343 | } | |
1344 | break; | |
1345 | } | |
f23d2845 | 1346 | |
1a0c894a BP |
1347 | case DPIF_OP_EXECUTE: |
1348 | COVERAGE_INC(dpif_execute); | |
1349 | log_execute_message(dpif, &op->u.execute, false, error); | |
1350 | break; | |
1351 | } | |
1352 | } | |
b99d3cee | 1353 | |
1a0c894a BP |
1354 | ops += chunk; |
1355 | n_ops -= chunk; | |
1356 | } else { | |
1357 | /* Help the dpif provider to execute one op. */ | |
1358 | struct dpif_op *op = ops[0]; | |
b99d3cee | 1359 | |
1a0c894a BP |
1360 | COVERAGE_INC(dpif_execute); |
1361 | op->error = dpif_execute_with_help(dpif, &op->u.execute); | |
1362 | ops++; | |
1363 | n_ops--; | |
6bc60024 BP |
1364 | } |
1365 | } | |
1366 | } | |
1367 | ||
01545c1a BP |
1368 | /* Returns a string that represents 'type', for use in log messages. */ |
1369 | const char * | |
1370 | dpif_upcall_type_to_string(enum dpif_upcall_type type) | |
1371 | { | |
1372 | switch (type) { | |
1373 | case DPIF_UC_MISS: return "miss"; | |
1374 | case DPIF_UC_ACTION: return "action"; | |
01545c1a BP |
1375 | case DPIF_N_UC_TYPES: default: return "<unknown>"; |
1376 | } | |
1377 | } | |
1378 | ||
a12b3ead BP |
1379 | /* Enables or disables receiving packets with dpif_recv() on 'dpif'. Returns 0 |
1380 | * if successful, otherwise a positive errno value. | |
98403001 | 1381 | * |
a12b3ead | 1382 | * Turning packet receive off and then back on may change the Netlink PID |
98403001 BP |
1383 | * assignments returned by dpif_port_get_pid(). If the client does this, it |
1384 | * must update all of the flows that have OVS_ACTION_ATTR_USERSPACE actions | |
1385 | * using the new PID assignment. */ | |
8f24562a | 1386 | int |
a12b3ead | 1387 | dpif_recv_set(struct dpif *dpif, bool enable) |
8f24562a | 1388 | { |
6b31e073 RW |
1389 | int error = 0; |
1390 | ||
1391 | if (dpif->dpif_class->recv_set) { | |
1392 | error = dpif->dpif_class->recv_set(dpif, enable); | |
1393 | log_operation(dpif, "recv_set", error); | |
1394 | } | |
96fba48f | 1395 | return error; |
8f24562a BP |
1396 | } |
1397 | ||
1954e6bb AW |
1398 | /* Refreshes the poll loops and Netlink sockets associated to each port, |
1399 | * when the number of upcall handlers (upcall receiving thread) is changed | |
1400 | * to 'n_handlers' and receiving packets for 'dpif' is enabled by | |
1401 | * recv_set(). | |
1402 | * | |
1403 | * Since multiple upcall handlers can read upcalls simultaneously from | |
1404 | * 'dpif', each port can have multiple Netlink sockets, one per upcall | |
1405 | * handler. So, handlers_set() is responsible for the following tasks: | |
1406 | * | |
1407 | * When receiving upcall is enabled, extends or creates the | |
1408 | * configuration to support: | |
1409 | * | |
1410 | * - 'n_handlers' Netlink sockets for each port. | |
1411 | * | |
1412 | * - 'n_handlers' poll loops, one for each upcall handler. | |
1413 | * | |
1414 | * - registering the Netlink sockets for the same upcall handler to | |
1415 | * the corresponding poll loop. | |
1416 | * | |
1417 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1418 | int | |
1419 | dpif_handlers_set(struct dpif *dpif, uint32_t n_handlers) | |
1420 | { | |
6b31e073 RW |
1421 | int error = 0; |
1422 | ||
1423 | if (dpif->dpif_class->handlers_set) { | |
1424 | error = dpif->dpif_class->handlers_set(dpif, n_handlers); | |
1425 | log_operation(dpif, "handlers_set", error); | |
1426 | } | |
1954e6bb AW |
1427 | return error; |
1428 | } | |
1429 | ||
e4e74c3a AW |
1430 | void |
1431 | dpif_register_dp_purge_cb(struct dpif *dpif, dp_purge_callback *cb, void *aux) | |
1432 | { | |
1433 | if (dpif->dpif_class->register_dp_purge_cb) { | |
1434 | dpif->dpif_class->register_dp_purge_cb(dpif, cb, aux); | |
1435 | } | |
1436 | } | |
1437 | ||
6b31e073 | 1438 | void |
623540e4 | 1439 | dpif_register_upcall_cb(struct dpif *dpif, upcall_callback *cb, void *aux) |
6b31e073 RW |
1440 | { |
1441 | if (dpif->dpif_class->register_upcall_cb) { | |
623540e4 | 1442 | dpif->dpif_class->register_upcall_cb(dpif, cb, aux); |
6b31e073 RW |
1443 | } |
1444 | } | |
1445 | ||
1446 | void | |
1447 | dpif_enable_upcall(struct dpif *dpif) | |
1448 | { | |
1449 | if (dpif->dpif_class->enable_upcall) { | |
1450 | dpif->dpif_class->enable_upcall(dpif); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | void | |
1455 | dpif_disable_upcall(struct dpif *dpif) | |
1456 | { | |
1457 | if (dpif->dpif_class->disable_upcall) { | |
1458 | dpif->dpif_class->disable_upcall(dpif); | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | void | |
1463 | dpif_print_packet(struct dpif *dpif, struct dpif_upcall *upcall) | |
1464 | { | |
1465 | if (!VLOG_DROP_DBG(&dpmsg_rl)) { | |
1466 | struct ds flow; | |
1467 | char *packet; | |
1468 | ||
2482b0b0 | 1469 | packet = ofp_dp_packet_to_string(&upcall->packet); |
6b31e073 RW |
1470 | |
1471 | ds_init(&flow); | |
1472 | odp_flow_key_format(upcall->key, upcall->key_len, &flow); | |
1473 | ||
1474 | VLOG_DBG("%s: %s upcall:\n%s\n%s", | |
1475 | dpif_name(dpif), dpif_upcall_type_to_string(upcall->type), | |
1476 | ds_cstr(&flow), packet); | |
1477 | ||
1478 | ds_destroy(&flow); | |
1479 | free(packet); | |
1480 | } | |
1481 | } | |
1482 | ||
d4f6865c DDP |
1483 | /* Pass custom configuration to the datapath implementation. Some of the |
1484 | * changes can be postponed until dpif_run() is called. */ | |
f2eee189 | 1485 | int |
d4f6865c | 1486 | dpif_set_config(struct dpif *dpif, const struct smap *cfg) |
f2eee189 AW |
1487 | { |
1488 | int error = 0; | |
1489 | ||
d4f6865c DDP |
1490 | if (dpif->dpif_class->set_config) { |
1491 | error = dpif->dpif_class->set_config(dpif, cfg); | |
f2eee189 | 1492 | if (error) { |
d4f6865c | 1493 | log_operation(dpif, "set_config", error); |
f2eee189 AW |
1494 | } |
1495 | } | |
1496 | ||
1497 | return error; | |
1498 | } | |
1499 | ||
1954e6bb AW |
1500 | /* Polls for an upcall from 'dpif' for an upcall handler. Since there |
1501 | * there can be multiple poll loops, 'handler_id' is needed as index to | |
1502 | * identify the corresponding poll loop. If successful, stores the upcall | |
1503 | * into '*upcall', using 'buf' for storage. Should only be called if | |
1504 | * 'recv_set' has been used to enable receiving packets from 'dpif'. | |
96fba48f | 1505 | * |
da546e07 JR |
1506 | * 'upcall->key' and 'upcall->userdata' point into data in the caller-provided |
1507 | * 'buf', so their memory cannot be freed separately from 'buf'. | |
856081f6 | 1508 | * |
837a88dc JR |
1509 | * The caller owns the data of 'upcall->packet' and may modify it. If |
1510 | * packet's headroom is exhausted as it is manipulated, 'upcall->packet' | |
1511 | * will be reallocated. This requires the data of 'upcall->packet' to be | |
1512 | * released with ofpbuf_uninit() before 'upcall' is destroyed. However, | |
1513 | * when an error is returned, the 'upcall->packet' may be uninitialized | |
1514 | * and should not be released. | |
1515 | * | |
96fba48f | 1516 | * Returns 0 if successful, otherwise a positive errno value. Returns EAGAIN |
856081f6 | 1517 | * if no upcall is immediately available. */ |
064af421 | 1518 | int |
1954e6bb AW |
1519 | dpif_recv(struct dpif *dpif, uint32_t handler_id, struct dpif_upcall *upcall, |
1520 | struct ofpbuf *buf) | |
064af421 | 1521 | { |
6b31e073 | 1522 | int error = EAGAIN; |
01545c1a | 1523 | |
6b31e073 RW |
1524 | if (dpif->dpif_class->recv) { |
1525 | error = dpif->dpif_class->recv(dpif, handler_id, upcall, buf); | |
1526 | if (!error) { | |
1527 | dpif_print_packet(dpif, upcall); | |
1528 | } else if (error != EAGAIN) { | |
1529 | log_operation(dpif, "recv", error); | |
1530 | } | |
064af421 | 1531 | } |
064af421 BP |
1532 | return error; |
1533 | } | |
1534 | ||
96fba48f | 1535 | /* Discards all messages that would otherwise be received by dpif_recv() on |
1ba530f4 BP |
1536 | * 'dpif'. */ |
1537 | void | |
96fba48f BP |
1538 | dpif_recv_purge(struct dpif *dpif) |
1539 | { | |
96fba48f | 1540 | COVERAGE_INC(dpif_purge); |
1ba530f4 BP |
1541 | if (dpif->dpif_class->recv_purge) { |
1542 | dpif->dpif_class->recv_purge(dpif); | |
96fba48f | 1543 | } |
96fba48f BP |
1544 | } |
1545 | ||
1954e6bb AW |
1546 | /* Arranges for the poll loop for an upcall handler to wake up when 'dpif' |
1547 | * 'dpif' has a message queued to be received with the recv member | |
1548 | * function. Since there can be multiple poll loops, 'handler_id' is | |
1549 | * needed as index to identify the corresponding poll loop. */ | |
064af421 | 1550 | void |
1954e6bb | 1551 | dpif_recv_wait(struct dpif *dpif, uint32_t handler_id) |
064af421 | 1552 | { |
6b31e073 RW |
1553 | if (dpif->dpif_class->recv_wait) { |
1554 | dpif->dpif_class->recv_wait(dpif, handler_id); | |
1555 | } | |
064af421 | 1556 | } |
53a4218d | 1557 | |
b5cbbcf6 AZ |
1558 | /* |
1559 | * Return the datapath version. Caller is responsible for freeing | |
1560 | * the string. | |
1561 | */ | |
1562 | char * | |
1563 | dpif_get_dp_version(const struct dpif *dpif) | |
1564 | { | |
1565 | char *version = NULL; | |
1566 | ||
1567 | if (dpif->dpif_class->get_datapath_version) { | |
1568 | version = dpif->dpif_class->get_datapath_version(); | |
1569 | } | |
1570 | ||
1571 | return version; | |
1572 | } | |
1573 | ||
96fba48f BP |
1574 | /* Obtains the NetFlow engine type and engine ID for 'dpif' into '*engine_type' |
1575 | * and '*engine_id', respectively. */ | |
53a4218d BP |
1576 | void |
1577 | dpif_get_netflow_ids(const struct dpif *dpif, | |
1578 | uint8_t *engine_type, uint8_t *engine_id) | |
1579 | { | |
96fba48f BP |
1580 | *engine_type = dpif->netflow_engine_type; |
1581 | *engine_id = dpif->netflow_engine_id; | |
1582 | } | |
aae51f53 BP |
1583 | |
1584 | /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a priority | |
abff858b PS |
1585 | * value used for setting packet priority. |
1586 | * On success, returns 0 and stores the priority into '*priority'. | |
1587 | * On failure, returns a positive errno value and stores 0 into '*priority'. */ | |
aae51f53 BP |
1588 | int |
1589 | dpif_queue_to_priority(const struct dpif *dpif, uint32_t queue_id, | |
1590 | uint32_t *priority) | |
1591 | { | |
1592 | int error = (dpif->dpif_class->queue_to_priority | |
1593 | ? dpif->dpif_class->queue_to_priority(dpif, queue_id, | |
1594 | priority) | |
1595 | : EOPNOTSUPP); | |
1596 | if (error) { | |
1597 | *priority = 0; | |
1598 | } | |
1599 | log_operation(dpif, "queue_to_priority", error); | |
1600 | return error; | |
1601 | } | |
96fba48f BP |
1602 | \f |
1603 | void | |
1acb6baa BP |
1604 | dpif_init(struct dpif *dpif, const struct dpif_class *dpif_class, |
1605 | const char *name, | |
96fba48f BP |
1606 | uint8_t netflow_engine_type, uint8_t netflow_engine_id) |
1607 | { | |
1acb6baa | 1608 | dpif->dpif_class = dpif_class; |
1a6f1e2a | 1609 | dpif->base_name = xstrdup(name); |
a4af0040 | 1610 | dpif->full_name = xasprintf("%s@%s", dpif_class->type, name); |
96fba48f BP |
1611 | dpif->netflow_engine_type = netflow_engine_type; |
1612 | dpif->netflow_engine_id = netflow_engine_id; | |
1613 | } | |
999401aa JG |
1614 | |
1615 | /* Undoes the results of initialization. | |
1616 | * | |
1617 | * Normally this function only needs to be called from dpif_close(). | |
1618 | * However, it may be called by providers due to an error on opening | |
1619 | * that occurs after initialization. It this case dpif_close() would | |
1620 | * never be called. */ | |
1621 | void | |
1622 | dpif_uninit(struct dpif *dpif, bool close) | |
1623 | { | |
1624 | char *base_name = dpif->base_name; | |
1625 | char *full_name = dpif->full_name; | |
1626 | ||
1627 | if (close) { | |
a4af0040 | 1628 | dpif->dpif_class->close(dpif); |
999401aa JG |
1629 | } |
1630 | ||
1631 | free(base_name); | |
1632 | free(full_name); | |
1633 | } | |
96fba48f BP |
1634 | \f |
1635 | static void | |
1636 | log_operation(const struct dpif *dpif, const char *operation, int error) | |
1637 | { | |
1638 | if (!error) { | |
1639 | VLOG_DBG_RL(&dpmsg_rl, "%s: %s success", dpif_name(dpif), operation); | |
90bf1e07 | 1640 | } else if (ofperr_is_valid(error)) { |
96fba48f | 1641 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
90bf1e07 | 1642 | dpif_name(dpif), operation, ofperr_get_name(error)); |
71ce9235 | 1643 | } else { |
90bf1e07 | 1644 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
10a89ef0 | 1645 | dpif_name(dpif), operation, ovs_strerror(error)); |
96fba48f BP |
1646 | } |
1647 | } | |
1648 | ||
1649 | static enum vlog_level | |
1650 | flow_message_log_level(int error) | |
1651 | { | |
9b1a48c2 JP |
1652 | /* If flows arrive in a batch, userspace may push down multiple |
1653 | * unique flow definitions that overlap when wildcards are applied. | |
1654 | * Kernels that support flow wildcarding will reject these flows as | |
1655 | * duplicates (EEXIST), so lower the log level to debug for these | |
1656 | * types of messages. */ | |
1657 | return (error && error != EEXIST) ? VLL_WARN : VLL_DBG; | |
96fba48f BP |
1658 | } |
1659 | ||
1660 | static bool | |
1661 | should_log_flow_message(int error) | |
1662 | { | |
922fed06 | 1663 | return !vlog_should_drop(&this_module, flow_message_log_level(error), |
96fba48f BP |
1664 | error ? &error_rl : &dpmsg_rl); |
1665 | } | |
1666 | ||
1667 | static void | |
1668 | log_flow_message(const struct dpif *dpif, int error, const char *operation, | |
36956a7d | 1669 | const struct nlattr *key, size_t key_len, |
61fb711d | 1670 | const struct nlattr *mask, size_t mask_len, |
70e5ed6f | 1671 | const ovs_u128 *ufid, const struct dpif_flow_stats *stats, |
cf22f8cb | 1672 | const struct nlattr *actions, size_t actions_len) |
96fba48f BP |
1673 | { |
1674 | struct ds ds = DS_EMPTY_INITIALIZER; | |
1675 | ds_put_format(&ds, "%s: ", dpif_name(dpif)); | |
1676 | if (error) { | |
1677 | ds_put_cstr(&ds, "failed to "); | |
1678 | } | |
1679 | ds_put_format(&ds, "%s ", operation); | |
1680 | if (error) { | |
10a89ef0 | 1681 | ds_put_format(&ds, "(%s) ", ovs_strerror(error)); |
96fba48f | 1682 | } |
70e5ed6f JS |
1683 | if (ufid) { |
1684 | odp_format_ufid(ufid, &ds); | |
1685 | ds_put_cstr(&ds, " "); | |
1686 | } | |
0a37839c | 1687 | odp_flow_format(key, key_len, mask, mask_len, NULL, &ds, true); |
96fba48f BP |
1688 | if (stats) { |
1689 | ds_put_cstr(&ds, ", "); | |
c97fb132 | 1690 | dpif_flow_stats_format(stats, &ds); |
96fba48f | 1691 | } |
cdee00fd | 1692 | if (actions || actions_len) { |
96fba48f | 1693 | ds_put_cstr(&ds, ", actions:"); |
cdee00fd | 1694 | format_odp_actions(&ds, actions, actions_len); |
96fba48f | 1695 | } |
922fed06 | 1696 | vlog(&this_module, flow_message_log_level(error), "%s", ds_cstr(&ds)); |
96fba48f BP |
1697 | ds_destroy(&ds); |
1698 | } | |
89625d1e BP |
1699 | |
1700 | static void | |
1701 | log_flow_put_message(struct dpif *dpif, const struct dpif_flow_put *put, | |
1702 | int error) | |
1703 | { | |
43f9ac0a | 1704 | if (should_log_flow_message(error) && !(put->flags & DPIF_FP_PROBE)) { |
89625d1e BP |
1705 | struct ds s; |
1706 | ||
1707 | ds_init(&s); | |
1708 | ds_put_cstr(&s, "put"); | |
1709 | if (put->flags & DPIF_FP_CREATE) { | |
1710 | ds_put_cstr(&s, "[create]"); | |
1711 | } | |
1712 | if (put->flags & DPIF_FP_MODIFY) { | |
1713 | ds_put_cstr(&s, "[modify]"); | |
1714 | } | |
1715 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
1716 | ds_put_cstr(&s, "[zero]"); | |
1717 | } | |
1718 | log_flow_message(dpif, error, ds_cstr(&s), | |
61fb711d | 1719 | put->key, put->key_len, put->mask, put->mask_len, |
70e5ed6f JS |
1720 | put->ufid, put->stats, put->actions, |
1721 | put->actions_len); | |
89625d1e BP |
1722 | ds_destroy(&s); |
1723 | } | |
1724 | } | |
1725 | ||
b99d3cee BP |
1726 | static void |
1727 | log_flow_del_message(struct dpif *dpif, const struct dpif_flow_del *del, | |
1728 | int error) | |
1729 | { | |
1730 | if (should_log_flow_message(error)) { | |
1731 | log_flow_message(dpif, error, "flow_del", del->key, del->key_len, | |
70e5ed6f JS |
1732 | NULL, 0, del->ufid, !error ? del->stats : NULL, |
1733 | NULL, 0); | |
b99d3cee BP |
1734 | } |
1735 | } | |
1736 | ||
f0fe12fc BP |
1737 | /* Logs that 'execute' was executed on 'dpif' and completed with errno 'error' |
1738 | * (0 for success). 'subexecute' should be true if the execution is a result | |
1739 | * of breaking down a larger execution that needed help, false otherwise. | |
1740 | * | |
1741 | * | |
1742 | * XXX In theory, the log message could be deceptive because this function is | |
1743 | * called after the dpif_provider's '->execute' function, which is allowed to | |
1744 | * modify execute->packet and execute->md. In practice, though: | |
1745 | * | |
93451a0a | 1746 | * - dpif-netlink doesn't modify execute->packet or execute->md. |
f0fe12fc BP |
1747 | * |
1748 | * - dpif-netdev does modify them but it is less likely to have problems | |
1749 | * because it is built into ovs-vswitchd and cannot have version skew, | |
1750 | * etc. | |
1751 | * | |
1752 | * It would still be better to avoid the potential problem. I don't know of a | |
1753 | * good way to do that, though, that isn't expensive. */ | |
89625d1e BP |
1754 | static void |
1755 | log_execute_message(struct dpif *dpif, const struct dpif_execute *execute, | |
fc65bafc | 1756 | bool subexecute, int error) |
89625d1e | 1757 | { |
43f9ac0a JR |
1758 | if (!(error ? VLOG_DROP_WARN(&error_rl) : VLOG_DROP_DBG(&dpmsg_rl)) |
1759 | && !execute->probe) { | |
89625d1e BP |
1760 | struct ds ds = DS_EMPTY_INITIALIZER; |
1761 | char *packet; | |
b701bce9 JR |
1762 | uint64_t stub[1024 / 8]; |
1763 | struct ofpbuf md = OFPBUF_STUB_INITIALIZER(stub); | |
89625d1e | 1764 | |
cf62fa4c | 1765 | packet = ofp_packet_to_string(dp_packet_data(execute->packet), |
2482b0b0 JS |
1766 | dp_packet_size(execute->packet), |
1767 | execute->packet->packet_type); | |
b701bce9 | 1768 | odp_key_from_pkt_metadata(&md, &execute->packet->md); |
fc65bafc BP |
1769 | ds_put_format(&ds, "%s: %sexecute ", |
1770 | dpif_name(dpif), | |
1771 | (subexecute ? "sub-" | |
1772 | : dpif_execute_needs_help(execute) ? "super-" | |
1773 | : "")); | |
89625d1e BP |
1774 | format_odp_actions(&ds, execute->actions, execute->actions_len); |
1775 | if (error) { | |
10a89ef0 | 1776 | ds_put_format(&ds, " failed (%s)", ovs_strerror(error)); |
89625d1e BP |
1777 | } |
1778 | ds_put_format(&ds, " on packet %s", packet); | |
b701bce9 JR |
1779 | ds_put_format(&ds, " with metadata "); |
1780 | odp_flow_format(md.data, md.size, NULL, 0, NULL, &ds, true); | |
27130224 | 1781 | ds_put_format(&ds, " mtu %d", execute->mtu); |
922fed06 | 1782 | vlog(&this_module, error ? VLL_WARN : VLL_DBG, "%s", ds_cstr(&ds)); |
89625d1e BP |
1783 | ds_destroy(&ds); |
1784 | free(packet); | |
b701bce9 | 1785 | ofpbuf_uninit(&md); |
89625d1e BP |
1786 | } |
1787 | } | |
6fe09f8c JS |
1788 | |
1789 | static void | |
1790 | log_flow_get_message(const struct dpif *dpif, const struct dpif_flow_get *get, | |
1791 | int error) | |
1792 | { | |
1793 | if (should_log_flow_message(error)) { | |
1794 | log_flow_message(dpif, error, "flow_get", | |
1795 | get->key, get->key_len, | |
1796 | get->flow->mask, get->flow->mask_len, | |
70e5ed6f | 1797 | get->ufid, &get->flow->stats, |
6fe09f8c JS |
1798 | get->flow->actions, get->flow->actions_len); |
1799 | } | |
1800 | } | |
a36de779 PS |
1801 | |
1802 | bool | |
1803 | dpif_supports_tnl_push_pop(const struct dpif *dpif) | |
1804 | { | |
c4ea7529 | 1805 | return dpif_is_netdev(dpif); |
a36de779 | 1806 | } |
5dddf960 JR |
1807 | |
1808 | /* Meters */ | |
1809 | void | |
1810 | dpif_meter_get_features(const struct dpif *dpif, | |
1811 | struct ofputil_meter_features *features) | |
1812 | { | |
1813 | memset(features, 0, sizeof *features); | |
1814 | if (dpif->dpif_class->meter_get_features) { | |
1815 | dpif->dpif_class->meter_get_features(dpif, features); | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | /* Adds or modifies meter identified by 'meter_id' in 'dpif'. If '*meter_id' | |
1820 | * is UINT32_MAX, adds a new meter, otherwise modifies an existing meter. | |
1821 | * | |
1822 | * If meter is successfully added, sets '*meter_id' to the new meter's | |
1823 | * meter number. */ | |
1824 | int | |
1825 | dpif_meter_set(struct dpif *dpif, ofproto_meter_id *meter_id, | |
1826 | struct ofputil_meter_config *config) | |
1827 | { | |
1828 | int error; | |
1829 | ||
1830 | COVERAGE_INC(dpif_meter_set); | |
1831 | ||
1832 | error = dpif->dpif_class->meter_set(dpif, meter_id, config); | |
1833 | if (!error) { | |
1834 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" set", | |
1835 | dpif_name(dpif), meter_id->uint32); | |
1836 | } else { | |
1837 | VLOG_WARN_RL(&error_rl, "%s: failed to set DPIF meter %"PRIu32": %s", | |
1838 | dpif_name(dpif), meter_id->uint32, ovs_strerror(error)); | |
1839 | meter_id->uint32 = UINT32_MAX; | |
1840 | } | |
1841 | return error; | |
1842 | } | |
1843 | ||
1844 | int | |
1845 | dpif_meter_get(const struct dpif *dpif, ofproto_meter_id meter_id, | |
1846 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1847 | { | |
1848 | int error; | |
1849 | ||
1850 | COVERAGE_INC(dpif_meter_get); | |
1851 | ||
1852 | error = dpif->dpif_class->meter_get(dpif, meter_id, stats, n_bands); | |
1853 | if (!error) { | |
1854 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" get stats", | |
1855 | dpif_name(dpif), meter_id.uint32); | |
1856 | } else { | |
1857 | VLOG_WARN_RL(&error_rl, | |
1858 | "%s: failed to get DPIF meter %"PRIu32" stats: %s", | |
1859 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1860 | stats->packet_in_count = ~0; | |
1861 | stats->byte_in_count = ~0; | |
1862 | stats->n_bands = 0; | |
1863 | } | |
1864 | return error; | |
1865 | } | |
1866 | ||
1867 | int | |
1868 | dpif_meter_del(struct dpif *dpif, ofproto_meter_id meter_id, | |
1869 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1870 | { | |
1871 | int error; | |
1872 | ||
1873 | COVERAGE_INC(dpif_meter_del); | |
1874 | ||
1875 | error = dpif->dpif_class->meter_del(dpif, meter_id, stats, n_bands); | |
1876 | if (!error) { | |
1877 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" deleted", | |
1878 | dpif_name(dpif), meter_id.uint32); | |
1879 | } else { | |
1880 | VLOG_WARN_RL(&error_rl, | |
1881 | "%s: failed to delete DPIF meter %"PRIu32": %s", | |
1882 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1883 | if (stats) { | |
1884 | stats->packet_in_count = ~0; | |
1885 | stats->byte_in_count = ~0; | |
1886 | stats->n_bands = 0; | |
1887 | } | |
1888 | } | |
1889 | return error; | |
1890 | } |