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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 | |
96fba48f BP |
95 | static void log_operation(const struct dpif *, const char *operation, |
96 | int error); | |
eff1e5b0 RD |
97 | static bool should_log_flow_message(const struct vlog_module *module, |
98 | int error); | |
064af421 | 99 | |
36f29fb1 PS |
100 | /* Incremented whenever tnl route, arp, etc changes. */ |
101 | struct seq *tnl_conf_seq; | |
102 | ||
999401aa JG |
103 | static void |
104 | dp_initialize(void) | |
105 | { | |
eb8ed438 | 106 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
999401aa | 107 | |
eb8ed438 | 108 | if (ovsthread_once_start(&once)) { |
999401aa JG |
109 | int i; |
110 | ||
36f29fb1 | 111 | tnl_conf_seq = seq_create(); |
fceef209 | 112 | dpctl_unixctl_register(); |
a36de779 | 113 | tnl_port_map_init(); |
53902038 | 114 | tnl_neigh_cache_init(); |
b772066f | 115 | route_table_init(); |
1bc50ef3 | 116 | |
36f29fb1 PS |
117 | for (i = 0; i < ARRAY_SIZE(base_dpif_classes); i++) { |
118 | dp_register_provider(base_dpif_classes[i]); | |
119 | } | |
120 | ||
1bc50ef3 | 121 | ovsthread_once_done(&once); |
999401aa JG |
122 | } |
123 | } | |
124 | ||
5703b15f BP |
125 | static int |
126 | dp_register_provider__(const struct dpif_class *new_class) | |
999401aa JG |
127 | { |
128 | struct registered_dpif_class *registered_class; | |
c8973eb6 | 129 | int error; |
999401aa | 130 | |
579a77e0 EJ |
131 | if (sset_contains(&dpif_blacklist, new_class->type)) { |
132 | VLOG_DBG("attempted to register blacklisted provider: %s", | |
133 | new_class->type); | |
134 | return EINVAL; | |
135 | } | |
136 | ||
999401aa JG |
137 | if (shash_find(&dpif_classes, new_class->type)) { |
138 | VLOG_WARN("attempted to register duplicate datapath provider: %s", | |
139 | new_class->type); | |
140 | return EEXIST; | |
141 | } | |
1a6f1e2a | 142 | |
c8973eb6 DDP |
143 | error = new_class->init ? new_class->init() : 0; |
144 | if (error) { | |
145 | VLOG_WARN("failed to initialize %s datapath class: %s", | |
146 | new_class->type, ovs_strerror(error)); | |
147 | return error; | |
148 | } | |
149 | ||
999401aa | 150 | registered_class = xmalloc(sizeof *registered_class); |
d2d8fbeb | 151 | registered_class->dpif_class = new_class; |
999401aa JG |
152 | registered_class->refcount = 0; |
153 | ||
154 | shash_add(&dpif_classes, new_class->type, registered_class); | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
5703b15f BP |
159 | /* Registers a new datapath provider. After successful registration, new |
160 | * datapaths of that type can be opened using dpif_open(). */ | |
161 | int | |
162 | dp_register_provider(const struct dpif_class *new_class) | |
163 | { | |
164 | int error; | |
165 | ||
97be1538 | 166 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 167 | error = dp_register_provider__(new_class); |
97be1538 | 168 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
169 | |
170 | return error; | |
171 | } | |
172 | ||
999401aa JG |
173 | /* Unregisters a datapath provider. 'type' must have been previously |
174 | * registered and not currently be in use by any dpifs. After unregistration | |
175 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
5703b15f BP |
176 | static int |
177 | dp_unregister_provider__(const char *type) | |
999401aa JG |
178 | { |
179 | struct shash_node *node; | |
180 | struct registered_dpif_class *registered_class; | |
181 | ||
182 | node = shash_find(&dpif_classes, type); | |
183 | if (!node) { | |
999401aa JG |
184 | return EAFNOSUPPORT; |
185 | } | |
186 | ||
187 | registered_class = node->data; | |
188 | if (registered_class->refcount) { | |
189 | VLOG_WARN("attempted to unregister in use datapath provider: %s", type); | |
190 | return EBUSY; | |
191 | } | |
192 | ||
193 | shash_delete(&dpif_classes, node); | |
194 | free(registered_class); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
5703b15f BP |
199 | /* Unregisters a datapath provider. 'type' must have been previously |
200 | * registered and not currently be in use by any dpifs. After unregistration | |
201 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
202 | int | |
203 | dp_unregister_provider(const char *type) | |
204 | { | |
205 | int error; | |
206 | ||
207 | dp_initialize(); | |
208 | ||
97be1538 | 209 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 210 | error = dp_unregister_provider__(type); |
97be1538 | 211 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
212 | |
213 | return error; | |
214 | } | |
215 | ||
579a77e0 EJ |
216 | /* Blacklists a provider. Causes future calls of dp_register_provider() with |
217 | * a dpif_class which implements 'type' to fail. */ | |
218 | void | |
219 | dp_blacklist_provider(const char *type) | |
220 | { | |
97be1538 | 221 | ovs_mutex_lock(&dpif_mutex); |
579a77e0 | 222 | sset_add(&dpif_blacklist, type); |
97be1538 | 223 | ovs_mutex_unlock(&dpif_mutex); |
579a77e0 EJ |
224 | } |
225 | ||
5b5b11ea BP |
226 | /* Adds the types of all currently registered datapath providers to 'types'. |
227 | * The caller must first initialize the sset. */ | |
1a6f1e2a | 228 | void |
d0c23a1a | 229 | dp_enumerate_types(struct sset *types) |
1a6f1e2a | 230 | { |
999401aa | 231 | struct shash_node *node; |
1a6f1e2a | 232 | |
999401aa | 233 | dp_initialize(); |
1a6f1e2a | 234 | |
97be1538 | 235 | ovs_mutex_lock(&dpif_mutex); |
999401aa JG |
236 | SHASH_FOR_EACH(node, &dpif_classes) { |
237 | const struct registered_dpif_class *registered_class = node->data; | |
d0c23a1a | 238 | sset_add(types, registered_class->dpif_class->type); |
1a6f1e2a | 239 | } |
97be1538 | 240 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
241 | } |
242 | ||
243 | static void | |
244 | dp_class_unref(struct registered_dpif_class *rc) | |
245 | { | |
97be1538 | 246 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
247 | ovs_assert(rc->refcount); |
248 | rc->refcount--; | |
97be1538 | 249 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
250 | } |
251 | ||
252 | static struct registered_dpif_class * | |
253 | dp_class_lookup(const char *type) | |
254 | { | |
255 | struct registered_dpif_class *rc; | |
256 | ||
97be1538 | 257 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
258 | rc = shash_find_data(&dpif_classes, type); |
259 | if (rc) { | |
260 | rc->refcount++; | |
261 | } | |
97be1538 | 262 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
263 | |
264 | return rc; | |
1a6f1e2a JG |
265 | } |
266 | ||
267 | /* Clears 'names' and enumerates the names of all known created datapaths with | |
d0c23a1a | 268 | * the given 'type'. The caller must first initialize the sset. Returns 0 if |
1a6f1e2a | 269 | * successful, otherwise a positive errno value. |
d3d22744 BP |
270 | * |
271 | * Some kinds of datapaths might not be practically enumerable. This is not | |
272 | * considered an error. */ | |
273 | int | |
d0c23a1a | 274 | dp_enumerate_names(const char *type, struct sset *names) |
d3d22744 | 275 | { |
5703b15f | 276 | struct registered_dpif_class *registered_class; |
999401aa JG |
277 | const struct dpif_class *dpif_class; |
278 | int error; | |
d3d22744 | 279 | |
999401aa | 280 | dp_initialize(); |
d0c23a1a | 281 | sset_clear(names); |
1a6f1e2a | 282 | |
5703b15f | 283 | registered_class = dp_class_lookup(type); |
999401aa JG |
284 | if (!registered_class) { |
285 | VLOG_WARN("could not enumerate unknown type: %s", type); | |
286 | return EAFNOSUPPORT; | |
287 | } | |
1a6f1e2a | 288 | |
d2d8fbeb | 289 | dpif_class = registered_class->dpif_class; |
2240af25 DDP |
290 | error = (dpif_class->enumerate |
291 | ? dpif_class->enumerate(names, dpif_class) | |
292 | : 0); | |
999401aa JG |
293 | if (error) { |
294 | VLOG_WARN("failed to enumerate %s datapaths: %s", dpif_class->type, | |
10a89ef0 | 295 | ovs_strerror(error)); |
d3d22744 | 296 | } |
5703b15f | 297 | dp_class_unref(registered_class); |
1a6f1e2a | 298 | |
999401aa | 299 | return error; |
1a6f1e2a JG |
300 | } |
301 | ||
54ed8a5d BP |
302 | /* Parses 'datapath_name_', which is of the form [type@]name into its |
303 | * component pieces. 'name' and 'type' must be freed by the caller. | |
304 | * | |
305 | * The returned 'type' is normalized, as if by dpif_normalize_type(). */ | |
1a6f1e2a JG |
306 | void |
307 | dp_parse_name(const char *datapath_name_, char **name, char **type) | |
308 | { | |
309 | char *datapath_name = xstrdup(datapath_name_); | |
310 | char *separator; | |
311 | ||
312 | separator = strchr(datapath_name, '@'); | |
313 | if (separator) { | |
314 | *separator = '\0'; | |
315 | *type = datapath_name; | |
54ed8a5d | 316 | *name = xstrdup(dpif_normalize_type(separator + 1)); |
1a6f1e2a JG |
317 | } else { |
318 | *name = datapath_name; | |
54ed8a5d | 319 | *type = xstrdup(dpif_normalize_type(NULL)); |
1a6f1e2a | 320 | } |
d3d22744 BP |
321 | } |
322 | ||
96fba48f | 323 | static int |
1a6f1e2a | 324 | do_open(const char *name, const char *type, bool create, struct dpif **dpifp) |
064af421 | 325 | { |
96fba48f | 326 | struct dpif *dpif = NULL; |
064af421 | 327 | int error; |
999401aa JG |
328 | struct registered_dpif_class *registered_class; |
329 | ||
330 | dp_initialize(); | |
064af421 | 331 | |
3a225db7 | 332 | type = dpif_normalize_type(type); |
5703b15f | 333 | registered_class = dp_class_lookup(type); |
999401aa JG |
334 | if (!registered_class) { |
335 | VLOG_WARN("could not create datapath %s of unknown type %s", name, | |
336 | type); | |
337 | error = EAFNOSUPPORT; | |
338 | goto exit; | |
339 | } | |
340 | ||
4a387741 BP |
341 | error = registered_class->dpif_class->open(registered_class->dpif_class, |
342 | name, create, &dpif); | |
999401aa | 343 | if (!error) { |
32b77c31 PB |
344 | struct dpif_port_dump port_dump; |
345 | struct dpif_port dpif_port; | |
346 | ||
cb22974d | 347 | ovs_assert(dpif->dpif_class == registered_class->dpif_class); |
32b77c31 PB |
348 | |
349 | DPIF_PORT_FOR_EACH(&dpif_port, &port_dump, dpif) { | |
350 | struct netdev *netdev; | |
351 | int err; | |
352 | ||
353 | if (!strcmp(dpif_port.type, "internal")) { | |
354 | continue; | |
355 | } | |
356 | ||
357 | err = netdev_open(dpif_port.name, dpif_port.type, &netdev); | |
358 | ||
359 | if (!err) { | |
360 | netdev_ports_insert(netdev, DPIF_HMAP_KEY(dpif), &dpif_port); | |
361 | netdev_close(netdev); | |
362 | } else { | |
363 | VLOG_WARN("could not open netdev %s type %s", name, type); | |
364 | } | |
365 | } | |
5703b15f BP |
366 | } else { |
367 | dp_class_unref(registered_class); | |
064af421 | 368 | } |
064af421 | 369 | |
96fba48f BP |
370 | exit: |
371 | *dpifp = error ? NULL : dpif; | |
372 | return error; | |
064af421 BP |
373 | } |
374 | ||
1a6f1e2a JG |
375 | /* Tries to open an existing datapath named 'name' and type 'type'. Will fail |
376 | * if no datapath with 'name' and 'type' exists. 'type' may be either NULL or | |
377 | * the empty string to specify the default system type. Returns 0 if | |
378 | * successful, otherwise a positive errno value. On success stores a pointer | |
379 | * to the datapath in '*dpifp', otherwise a null pointer. */ | |
96fba48f | 380 | int |
1a6f1e2a | 381 | dpif_open(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 382 | { |
1a6f1e2a | 383 | return do_open(name, type, false, dpifp); |
064af421 BP |
384 | } |
385 | ||
1a6f1e2a JG |
386 | /* Tries to create and open a new datapath with the given 'name' and 'type'. |
387 | * 'type' may be either NULL or the empty string to specify the default system | |
388 | * type. Will fail if a datapath with 'name' and 'type' already exists. | |
389 | * Returns 0 if successful, otherwise a positive errno value. On success | |
390 | * stores a pointer to the datapath in '*dpifp', otherwise a null pointer. */ | |
064af421 | 391 | int |
1a6f1e2a | 392 | dpif_create(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 393 | { |
1a6f1e2a | 394 | return do_open(name, type, true, dpifp); |
96fba48f | 395 | } |
064af421 | 396 | |
1a6f1e2a JG |
397 | /* Tries to open a datapath with the given 'name' and 'type', creating it if it |
398 | * does not exist. 'type' may be either NULL or the empty string to specify | |
399 | * the default system type. Returns 0 if successful, otherwise a positive | |
400 | * errno value. On success stores a pointer to the datapath in '*dpifp', | |
401 | * otherwise a null pointer. */ | |
efacbce6 | 402 | int |
1a6f1e2a | 403 | dpif_create_and_open(const char *name, const char *type, struct dpif **dpifp) |
efacbce6 BP |
404 | { |
405 | int error; | |
406 | ||
1a6f1e2a | 407 | error = dpif_create(name, type, dpifp); |
efacbce6 | 408 | if (error == EEXIST || error == EBUSY) { |
1a6f1e2a | 409 | error = dpif_open(name, type, dpifp); |
efacbce6 BP |
410 | if (error) { |
411 | VLOG_WARN("datapath %s already exists but cannot be opened: %s", | |
10a89ef0 | 412 | name, ovs_strerror(error)); |
efacbce6 BP |
413 | } |
414 | } else if (error) { | |
10a89ef0 BP |
415 | VLOG_WARN("failed to create datapath %s: %s", |
416 | name, ovs_strerror(error)); | |
efacbce6 BP |
417 | } |
418 | return error; | |
419 | } | |
420 | ||
96fba48f BP |
421 | /* Closes and frees the connection to 'dpif'. Does not destroy the datapath |
422 | * itself; call dpif_delete() first, instead, if that is desirable. */ | |
423 | void | |
424 | dpif_close(struct dpif *dpif) | |
425 | { | |
426 | if (dpif) { | |
5703b15f | 427 | struct registered_dpif_class *rc; |
999401aa | 428 | |
5703b15f | 429 | rc = shash_find_data(&dpif_classes, dpif->dpif_class->type); |
999401aa | 430 | dpif_uninit(dpif, true); |
5703b15f | 431 | dp_class_unref(rc); |
064af421 BP |
432 | } |
433 | } | |
434 | ||
640e1b20 | 435 | /* Performs periodic work needed by 'dpif'. */ |
a36de779 | 436 | bool |
640e1b20 BP |
437 | dpif_run(struct dpif *dpif) |
438 | { | |
439 | if (dpif->dpif_class->run) { | |
a36de779 | 440 | return dpif->dpif_class->run(dpif); |
640e1b20 | 441 | } |
a36de779 | 442 | return false; |
640e1b20 BP |
443 | } |
444 | ||
445 | /* Arranges for poll_block() to wake up when dp_run() needs to be called for | |
446 | * 'dpif'. */ | |
447 | void | |
448 | dpif_wait(struct dpif *dpif) | |
449 | { | |
450 | if (dpif->dpif_class->wait) { | |
451 | dpif->dpif_class->wait(dpif); | |
452 | } | |
453 | } | |
454 | ||
1a6f1e2a JG |
455 | /* Returns the name of datapath 'dpif' prefixed with the type |
456 | * (for use in log messages). */ | |
b29ba128 BP |
457 | const char * |
458 | dpif_name(const struct dpif *dpif) | |
459 | { | |
1a6f1e2a JG |
460 | return dpif->full_name; |
461 | } | |
462 | ||
463 | /* Returns the name of datapath 'dpif' without the type | |
464 | * (for use in device names). */ | |
465 | const char * | |
466 | dpif_base_name(const struct dpif *dpif) | |
467 | { | |
468 | return dpif->base_name; | |
b29ba128 BP |
469 | } |
470 | ||
c7a26215 JP |
471 | /* Returns the type of datapath 'dpif'. */ |
472 | const char * | |
473 | dpif_type(const struct dpif *dpif) | |
474 | { | |
475 | return dpif->dpif_class->type; | |
476 | } | |
477 | ||
3a225db7 BP |
478 | /* Returns the fully spelled out name for the given datapath 'type'. |
479 | * | |
480 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
481 | * string might be the same even if they have different spellings. */ | |
482 | const char * | |
483 | dpif_normalize_type(const char *type) | |
484 | { | |
485 | return type && type[0] ? type : "system"; | |
486 | } | |
487 | ||
96fba48f BP |
488 | /* Destroys the datapath that 'dpif' is connected to, first removing all of its |
489 | * ports. After calling this function, it does not make sense to pass 'dpif' | |
490 | * to any functions other than dpif_name() or dpif_close(). */ | |
064af421 BP |
491 | int |
492 | dpif_delete(struct dpif *dpif) | |
493 | { | |
96fba48f BP |
494 | int error; |
495 | ||
064af421 | 496 | COVERAGE_INC(dpif_destroy); |
96fba48f | 497 | |
1acb6baa | 498 | error = dpif->dpif_class->destroy(dpif); |
96fba48f BP |
499 | log_operation(dpif, "delete", error); |
500 | return error; | |
064af421 BP |
501 | } |
502 | ||
96fba48f BP |
503 | /* Retrieves statistics for 'dpif' into 'stats'. Returns 0 if successful, |
504 | * otherwise a positive errno value. */ | |
064af421 | 505 | int |
a8d9304d | 506 | dpif_get_dp_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
064af421 | 507 | { |
1acb6baa | 508 | int error = dpif->dpif_class->get_stats(dpif, stats); |
96fba48f BP |
509 | if (error) { |
510 | memset(stats, 0, sizeof *stats); | |
511 | } | |
512 | log_operation(dpif, "get_stats", error); | |
513 | return error; | |
064af421 BP |
514 | } |
515 | ||
0aeaabc8 JP |
516 | const char * |
517 | dpif_port_open_type(const char *datapath_type, const char *port_type) | |
518 | { | |
5703b15f | 519 | struct registered_dpif_class *rc; |
0aeaabc8 JP |
520 | |
521 | datapath_type = dpif_normalize_type(datapath_type); | |
522 | ||
97be1538 | 523 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
524 | rc = shash_find_data(&dpif_classes, datapath_type); |
525 | if (rc && rc->dpif_class->port_open_type) { | |
526 | port_type = rc->dpif_class->port_open_type(rc->dpif_class, port_type); | |
0aeaabc8 | 527 | } |
97be1538 | 528 | ovs_mutex_unlock(&dpif_mutex); |
0aeaabc8 | 529 | |
5703b15f | 530 | return port_type; |
0aeaabc8 JP |
531 | } |
532 | ||
232dfa4a | 533 | /* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is |
4e022ec0 | 534 | * non-null and its value is not ODPP_NONE, then attempts to use the |
232dfa4a JP |
535 | * value as the port number. |
536 | * | |
537 | * If successful, returns 0 and sets '*port_nop' to the new port's port | |
538 | * number (if 'port_nop' is non-null). On failure, returns a positive | |
4e022ec0 | 539 | * errno value and sets '*port_nop' to ODPP_NONE (if 'port_nop' is |
232dfa4a | 540 | * non-null). */ |
064af421 | 541 | int |
4e022ec0 | 542 | dpif_port_add(struct dpif *dpif, struct netdev *netdev, odp_port_t *port_nop) |
064af421 | 543 | { |
c3827f61 | 544 | const char *netdev_name = netdev_get_name(netdev); |
4e022ec0 | 545 | odp_port_t port_no = ODPP_NONE; |
9ee3ae3e | 546 | int error; |
064af421 BP |
547 | |
548 | COVERAGE_INC(dpif_port_add); | |
9ee3ae3e | 549 | |
232dfa4a JP |
550 | if (port_nop) { |
551 | port_no = *port_nop; | |
552 | } | |
553 | ||
c3827f61 | 554 | error = dpif->dpif_class->port_add(dpif, netdev, &port_no); |
9ee3ae3e | 555 | if (!error) { |
9b56fe13 | 556 | VLOG_DBG_RL(&dpmsg_rl, "%s: added %s as port %"PRIu32, |
c3827f61 | 557 | dpif_name(dpif), netdev_name, port_no); |
32b77c31 PB |
558 | |
559 | if (strcmp(netdev_get_type(netdev), "internal")) { | |
560 | struct dpif_port dpif_port; | |
561 | ||
562 | dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev)); | |
563 | dpif_port.name = CONST_CAST(char *, netdev_name); | |
564 | dpif_port.port_no = port_no; | |
565 | netdev_ports_insert(netdev, DPIF_HMAP_KEY(dpif), &dpif_port); | |
566 | } | |
064af421 | 567 | } else { |
9ee3ae3e | 568 | VLOG_WARN_RL(&error_rl, "%s: failed to add %s as port: %s", |
10a89ef0 | 569 | dpif_name(dpif), netdev_name, ovs_strerror(error)); |
4e022ec0 | 570 | port_no = ODPP_NONE; |
9ee3ae3e BP |
571 | } |
572 | if (port_nop) { | |
573 | *port_nop = port_no; | |
064af421 | 574 | } |
9ee3ae3e | 575 | return error; |
064af421 BP |
576 | } |
577 | ||
96fba48f BP |
578 | /* Attempts to remove 'dpif''s port number 'port_no'. Returns 0 if successful, |
579 | * otherwise a positive errno value. */ | |
064af421 | 580 | int |
4e022ec0 | 581 | dpif_port_del(struct dpif *dpif, odp_port_t port_no) |
064af421 | 582 | { |
96fba48f BP |
583 | int error; |
584 | ||
064af421 | 585 | COVERAGE_INC(dpif_port_del); |
96fba48f | 586 | |
1acb6baa | 587 | error = dpif->dpif_class->port_del(dpif, port_no); |
a1811296 | 588 | if (!error) { |
9b56fe13 | 589 | VLOG_DBG_RL(&dpmsg_rl, "%s: port_del(%"PRIu32")", |
a1811296 | 590 | dpif_name(dpif), port_no); |
32b77c31 PB |
591 | |
592 | netdev_ports_remove(port_no, DPIF_HMAP_KEY(dpif)); | |
a1811296 BP |
593 | } else { |
594 | log_operation(dpif, "port_del", error); | |
595 | } | |
96fba48f | 596 | return error; |
064af421 BP |
597 | } |
598 | ||
4c738a8d BP |
599 | /* Makes a deep copy of 'src' into 'dst'. */ |
600 | void | |
601 | dpif_port_clone(struct dpif_port *dst, const struct dpif_port *src) | |
602 | { | |
603 | dst->name = xstrdup(src->name); | |
604 | dst->type = xstrdup(src->type); | |
605 | dst->port_no = src->port_no; | |
606 | } | |
607 | ||
608 | /* Frees memory allocated to members of 'dpif_port'. | |
609 | * | |
610 | * Do not call this function on a dpif_port obtained from | |
611 | * dpif_port_dump_next(): that function retains ownership of the data in the | |
612 | * dpif_port. */ | |
613 | void | |
614 | dpif_port_destroy(struct dpif_port *dpif_port) | |
615 | { | |
616 | free(dpif_port->name); | |
617 | free(dpif_port->type); | |
618 | } | |
619 | ||
4afba28d JP |
620 | /* Checks if port named 'devname' exists in 'dpif'. If so, returns |
621 | * true; otherwise, returns false. */ | |
622 | bool | |
623 | dpif_port_exists(const struct dpif *dpif, const char *devname) | |
624 | { | |
625 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, NULL); | |
0f6a066f | 626 | if (error != 0 && error != ENODEV) { |
4afba28d | 627 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %s: %s", |
10a89ef0 | 628 | dpif_name(dpif), devname, ovs_strerror(error)); |
4afba28d JP |
629 | } |
630 | ||
631 | return !error; | |
632 | } | |
633 | ||
91364d18 IM |
634 | /* Refreshes configuration of 'dpif's port. */ |
635 | int | |
636 | dpif_port_set_config(struct dpif *dpif, odp_port_t port_no, | |
637 | const struct smap *cfg) | |
638 | { | |
639 | int error = 0; | |
640 | ||
641 | if (dpif->dpif_class->port_set_config) { | |
642 | error = dpif->dpif_class->port_set_config(dpif, port_no, cfg); | |
643 | if (error) { | |
644 | log_operation(dpif, "port_set_config", error); | |
645 | } | |
646 | } | |
647 | ||
648 | return error; | |
649 | } | |
650 | ||
96fba48f BP |
651 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and |
652 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
653 | * value. |
654 | * | |
0f6a066f DDP |
655 | * Retuns ENODEV if the port doesn't exist. |
656 | * | |
4c738a8d BP |
657 | * The caller owns the data in 'port' and must free it with |
658 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 | 659 | int |
4e022ec0 | 660 | dpif_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 661 | struct dpif_port *port) |
064af421 | 662 | { |
1acb6baa | 663 | int error = dpif->dpif_class->port_query_by_number(dpif, port_no, port); |
96fba48f | 664 | if (!error) { |
9b56fe13 | 665 | VLOG_DBG_RL(&dpmsg_rl, "%s: port %"PRIu32" is device %s", |
4c738a8d | 666 | dpif_name(dpif), port_no, port->name); |
064af421 | 667 | } else { |
96fba48f | 668 | memset(port, 0, sizeof *port); |
9b56fe13 | 669 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %"PRIu32": %s", |
10a89ef0 | 670 | dpif_name(dpif), port_no, ovs_strerror(error)); |
064af421 | 671 | } |
96fba48f | 672 | return error; |
064af421 BP |
673 | } |
674 | ||
96fba48f BP |
675 | /* Looks up port named 'devname' in 'dpif'. On success, returns 0 and |
676 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
677 | * value. |
678 | * | |
0f6a066f DDP |
679 | * Retuns ENODEV if the port doesn't exist. |
680 | * | |
4c738a8d BP |
681 | * The caller owns the data in 'port' and must free it with |
682 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 BP |
683 | int |
684 | dpif_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 685 | struct dpif_port *port) |
064af421 | 686 | { |
1acb6baa | 687 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, port); |
96fba48f | 688 | if (!error) { |
9b56fe13 | 689 | VLOG_DBG_RL(&dpmsg_rl, "%s: device %s is on port %"PRIu32, |
4c738a8d | 690 | dpif_name(dpif), devname, port->port_no); |
064af421 | 691 | } else { |
96fba48f BP |
692 | memset(port, 0, sizeof *port); |
693 | ||
0f6a066f | 694 | /* For ENODEV we use DBG level because the caller is probably |
d647f0a7 BP |
695 | * interested in whether 'dpif' actually has a port 'devname', so that |
696 | * it's not an issue worth logging if it doesn't. Other errors are | |
697 | * uncommon and more likely to indicate a real problem. */ | |
0f6a066f | 698 | VLOG_RL(&error_rl, error == ENODEV ? VLL_DBG : VLL_WARN, |
d647f0a7 | 699 | "%s: failed to query port %s: %s", |
10a89ef0 | 700 | dpif_name(dpif), devname, ovs_strerror(error)); |
064af421 | 701 | } |
96fba48f | 702 | return error; |
064af421 BP |
703 | } |
704 | ||
1954e6bb AW |
705 | /* Returns the Netlink PID value to supply in OVS_ACTION_ATTR_USERSPACE |
706 | * actions as the OVS_USERSPACE_ATTR_PID attribute's value, for use in | |
707 | * flows whose packets arrived on port 'port_no'. In the case where the | |
708 | * provider allocates multiple Netlink PIDs to a single port, it may use | |
709 | * 'hash' to spread load among them. The caller need not use a particular | |
710 | * hash function; a 5-tuple hash is suitable. | |
711 | * | |
712 | * (The datapath implementation might use some different hash function for | |
713 | * distributing packets received via flow misses among PIDs. This means | |
714 | * that packets received via flow misses might be reordered relative to | |
715 | * packets received via userspace actions. This is not ordinarily a | |
716 | * problem.) | |
98403001 | 717 | * |
4e022ec0 | 718 | * A 'port_no' of ODPP_NONE is a special case: it returns a reserved PID, not |
625b0720 BP |
719 | * allocated to any port, that the client may use for special purposes. |
720 | * | |
98403001 BP |
721 | * The return value is only meaningful when DPIF_UC_ACTION has been enabled in |
722 | * the 'dpif''s listen mask. It is allowed to change when DPIF_UC_ACTION is | |
723 | * disabled and then re-enabled, so a client that does that must be prepared to | |
724 | * update all of the flows that it installed that contain | |
725 | * OVS_ACTION_ATTR_USERSPACE actions. */ | |
726 | uint32_t | |
1954e6bb | 727 | dpif_port_get_pid(const struct dpif *dpif, odp_port_t port_no, uint32_t hash) |
98403001 BP |
728 | { |
729 | return (dpif->dpif_class->port_get_pid | |
1954e6bb | 730 | ? (dpif->dpif_class->port_get_pid)(dpif, port_no, hash) |
98403001 BP |
731 | : 0); |
732 | } | |
733 | ||
96fba48f BP |
734 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and copies |
735 | * the port's name into the 'name_size' bytes in 'name', ensuring that the | |
736 | * result is null-terminated. On failure, returns a positive errno value and | |
737 | * makes 'name' the empty string. */ | |
335562c0 | 738 | int |
4e022ec0 | 739 | dpif_port_get_name(struct dpif *dpif, odp_port_t port_no, |
335562c0 BP |
740 | char *name, size_t name_size) |
741 | { | |
4c738a8d | 742 | struct dpif_port port; |
335562c0 BP |
743 | int error; |
744 | ||
cb22974d | 745 | ovs_assert(name_size > 0); |
335562c0 BP |
746 | |
747 | error = dpif_port_query_by_number(dpif, port_no, &port); | |
748 | if (!error) { | |
4c738a8d BP |
749 | ovs_strlcpy(name, port.name, name_size); |
750 | dpif_port_destroy(&port); | |
335562c0 BP |
751 | } else { |
752 | *name = '\0'; | |
753 | } | |
754 | return error; | |
755 | } | |
756 | ||
b0ec0f27 | 757 | /* Initializes 'dump' to begin dumping the ports in a dpif. |
96fba48f | 758 | * |
b0ec0f27 BP |
759 | * This function provides no status indication. An error status for the entire |
760 | * dump operation is provided when it is completed by calling | |
761 | * dpif_port_dump_done(). | |
762 | */ | |
763 | void | |
764 | dpif_port_dump_start(struct dpif_port_dump *dump, const struct dpif *dpif) | |
765 | { | |
766 | dump->dpif = dpif; | |
767 | dump->error = dpif->dpif_class->port_dump_start(dpif, &dump->state); | |
768 | log_operation(dpif, "port_dump_start", dump->error); | |
769 | } | |
770 | ||
771 | /* Attempts to retrieve another port from 'dump', which must have been | |
4c738a8d | 772 | * initialized with dpif_port_dump_start(). On success, stores a new dpif_port |
b0ec0f27 | 773 | * into 'port' and returns true. On failure, returns false. |
96fba48f | 774 | * |
b0ec0f27 BP |
775 | * Failure might indicate an actual error or merely that the last port has been |
776 | * dumped. An error status for the entire dump operation is provided when it | |
4c738a8d BP |
777 | * is completed by calling dpif_port_dump_done(). |
778 | * | |
779 | * The dpif owns the data stored in 'port'. It will remain valid until at | |
780 | * least the next time 'dump' is passed to dpif_port_dump_next() or | |
781 | * dpif_port_dump_done(). */ | |
b0ec0f27 | 782 | bool |
4c738a8d | 783 | dpif_port_dump_next(struct dpif_port_dump *dump, struct dpif_port *port) |
064af421 | 784 | { |
b0ec0f27 | 785 | const struct dpif *dpif = dump->dpif; |
064af421 | 786 | |
b0ec0f27 BP |
787 | if (dump->error) { |
788 | return false; | |
789 | } | |
f4ba4c4f | 790 | |
b0ec0f27 BP |
791 | dump->error = dpif->dpif_class->port_dump_next(dpif, dump->state, port); |
792 | if (dump->error == EOF) { | |
793 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all ports", dpif_name(dpif)); | |
794 | } else { | |
795 | log_operation(dpif, "port_dump_next", dump->error); | |
796 | } | |
064af421 | 797 | |
b0ec0f27 BP |
798 | if (dump->error) { |
799 | dpif->dpif_class->port_dump_done(dpif, dump->state); | |
800 | return false; | |
f4ba4c4f | 801 | } |
b0ec0f27 BP |
802 | return true; |
803 | } | |
064af421 | 804 | |
b0ec0f27 BP |
805 | /* Completes port table dump operation 'dump', which must have been initialized |
806 | * with dpif_port_dump_start(). Returns 0 if the dump operation was | |
807 | * error-free, otherwise a positive errno value describing the problem. */ | |
808 | int | |
809 | dpif_port_dump_done(struct dpif_port_dump *dump) | |
810 | { | |
811 | const struct dpif *dpif = dump->dpif; | |
812 | if (!dump->error) { | |
813 | dump->error = dpif->dpif_class->port_dump_done(dpif, dump->state); | |
814 | log_operation(dpif, "port_dump_done", dump->error); | |
f4ba4c4f | 815 | } |
b0ec0f27 | 816 | return dump->error == EOF ? 0 : dump->error; |
064af421 BP |
817 | } |
818 | ||
e9e28be3 BP |
819 | /* Polls for changes in the set of ports in 'dpif'. If the set of ports in |
820 | * 'dpif' has changed, this function does one of the following: | |
821 | * | |
822 | * - Stores the name of the device that was added to or deleted from 'dpif' in | |
823 | * '*devnamep' and returns 0. The caller is responsible for freeing | |
824 | * '*devnamep' (with free()) when it no longer needs it. | |
825 | * | |
826 | * - Returns ENOBUFS and sets '*devnamep' to NULL. | |
827 | * | |
828 | * This function may also return 'false positives', where it returns 0 and | |
829 | * '*devnamep' names a device that was not actually added or deleted or it | |
830 | * returns ENOBUFS without any change. | |
831 | * | |
832 | * Returns EAGAIN if the set of ports in 'dpif' has not changed. May also | |
833 | * return other positive errno values to indicate that something has gone | |
834 | * wrong. */ | |
835 | int | |
836 | dpif_port_poll(const struct dpif *dpif, char **devnamep) | |
837 | { | |
1acb6baa | 838 | int error = dpif->dpif_class->port_poll(dpif, devnamep); |
e9e28be3 BP |
839 | if (error) { |
840 | *devnamep = NULL; | |
841 | } | |
842 | return error; | |
843 | } | |
844 | ||
845 | /* Arranges for the poll loop to wake up when port_poll(dpif) will return a | |
846 | * value other than EAGAIN. */ | |
847 | void | |
848 | dpif_port_poll_wait(const struct dpif *dpif) | |
849 | { | |
1acb6baa | 850 | dpif->dpif_class->port_poll_wait(dpif); |
e9e28be3 BP |
851 | } |
852 | ||
572b7068 | 853 | /* Extracts the flow stats for a packet. The 'flow' and 'packet' |
a7752d4a BP |
854 | * arguments must have been initialized through a call to flow_extract(). |
855 | * 'used' is stored into stats->used. */ | |
572b7068 | 856 | void |
cf62fa4c | 857 | dpif_flow_stats_extract(const struct flow *flow, const struct dp_packet *packet, |
a7752d4a | 858 | long long int used, struct dpif_flow_stats *stats) |
572b7068 | 859 | { |
e0eecb1c | 860 | stats->tcp_flags = ntohs(flow->tcp_flags); |
cf62fa4c | 861 | stats->n_bytes = dp_packet_size(packet); |
572b7068 | 862 | stats->n_packets = 1; |
a7752d4a | 863 | stats->used = used; |
572b7068 BP |
864 | } |
865 | ||
c97fb132 BP |
866 | /* Appends a human-readable representation of 'stats' to 's'. */ |
867 | void | |
868 | dpif_flow_stats_format(const struct dpif_flow_stats *stats, struct ds *s) | |
869 | { | |
870 | ds_put_format(s, "packets:%"PRIu64", bytes:%"PRIu64", used:", | |
871 | stats->n_packets, stats->n_bytes); | |
872 | if (stats->used) { | |
873 | ds_put_format(s, "%.3fs", (time_msec() - stats->used) / 1000.0); | |
874 | } else { | |
875 | ds_put_format(s, "never"); | |
876 | } | |
7393104d BP |
877 | if (stats->tcp_flags) { |
878 | ds_put_cstr(s, ", flags:"); | |
879 | packet_format_tcp_flags(s, stats->tcp_flags); | |
880 | } | |
c97fb132 BP |
881 | } |
882 | ||
7af12bd7 JS |
883 | /* Places the hash of the 'key_len' bytes starting at 'key' into '*hash'. */ |
884 | void | |
885 | dpif_flow_hash(const struct dpif *dpif OVS_UNUSED, | |
886 | const void *key, size_t key_len, ovs_u128 *hash) | |
887 | { | |
888 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
889 | static uint32_t secret; | |
890 | ||
891 | if (ovsthread_once_start(&once)) { | |
892 | secret = random_uint32(); | |
893 | ovsthread_once_done(&once); | |
894 | } | |
895 | hash_bytes128(key, key_len, secret, hash); | |
78145f6e | 896 | uuid_set_bits_v4((struct uuid *)hash); |
7af12bd7 JS |
897 | } |
898 | ||
96fba48f BP |
899 | /* Deletes all flows from 'dpif'. Returns 0 if successful, otherwise a |
900 | * positive errno value. */ | |
901 | int | |
902 | dpif_flow_flush(struct dpif *dpif) | |
064af421 | 903 | { |
96fba48f BP |
904 | int error; |
905 | ||
906 | COVERAGE_INC(dpif_flow_flush); | |
907 | ||
1acb6baa | 908 | error = dpif->dpif_class->flow_flush(dpif); |
96fba48f BP |
909 | log_operation(dpif, "flow_flush", error); |
910 | return error; | |
064af421 BP |
911 | } |
912 | ||
2c85851f JS |
913 | /* Attempts to install 'key' into the datapath, fetches it, then deletes it. |
914 | * Returns true if the datapath supported installing 'flow', false otherwise. | |
915 | */ | |
916 | bool | |
917 | dpif_probe_feature(struct dpif *dpif, const char *name, | |
bb71c96e AZ |
918 | const struct ofpbuf *key, const struct ofpbuf *actions, |
919 | const ovs_u128 *ufid) | |
2c85851f JS |
920 | { |
921 | struct dpif_flow flow; | |
922 | struct ofpbuf reply; | |
923 | uint64_t stub[DPIF_FLOW_BUFSIZE / 8]; | |
924 | bool enable_feature = false; | |
925 | int error; | |
bb71c96e AZ |
926 | const struct nlattr *nl_actions = actions ? actions->data : NULL; |
927 | const size_t nl_actions_size = actions ? actions->size : 0; | |
2c85851f | 928 | |
9ab0fce1 JS |
929 | /* Use DPIF_FP_MODIFY to cover the case where ovs-vswitchd is killed (and |
930 | * restarted) at just the right time such that feature probes from the | |
931 | * previous run are still present in the datapath. */ | |
932 | error = dpif_flow_put(dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY | DPIF_FP_PROBE, | |
bb71c96e AZ |
933 | key->data, key->size, NULL, 0, |
934 | nl_actions, nl_actions_size, | |
f5d317a1 | 935 | ufid, NON_PMD_CORE_ID, NULL); |
9ab0fce1 | 936 | if (error) { |
b52ac659 | 937 | if (error != EINVAL && error != EOVERFLOW) { |
2c85851f JS |
938 | VLOG_WARN("%s: %s flow probe failed (%s)", |
939 | dpif_name(dpif), name, ovs_strerror(error)); | |
940 | } | |
941 | return false; | |
942 | } | |
943 | ||
944 | ofpbuf_use_stack(&reply, &stub, sizeof stub); | |
6fd6ed71 | 945 | error = dpif_flow_get(dpif, key->data, key->size, ufid, |
f5d317a1 | 946 | NON_PMD_CORE_ID, &reply, &flow); |
2c85851f | 947 | if (!error |
bdd7ecf5 | 948 | && (!ufid || (flow.ufid_present |
2ff8484b | 949 | && ovs_u128_equals(*ufid, flow.ufid)))) { |
2c85851f JS |
950 | enable_feature = true; |
951 | } | |
952 | ||
6fd6ed71 | 953 | error = dpif_flow_del(dpif, key->data, key->size, ufid, |
f5d317a1 | 954 | NON_PMD_CORE_ID, NULL); |
2c85851f JS |
955 | if (error) { |
956 | VLOG_WARN("%s: failed to delete %s feature probe flow", | |
957 | dpif_name(dpif), name); | |
958 | } | |
959 | ||
960 | return enable_feature; | |
961 | } | |
962 | ||
6fe09f8c | 963 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_GET. */ |
96fba48f | 964 | int |
6fe09f8c | 965 | dpif_flow_get(struct dpif *dpif, |
70e5ed6f | 966 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 967 | const unsigned pmd_id, struct ofpbuf *buf, struct dpif_flow *flow) |
064af421 | 968 | { |
6fe09f8c JS |
969 | struct dpif_op *opp; |
970 | struct dpif_op op; | |
96fba48f | 971 | |
6fe09f8c JS |
972 | op.type = DPIF_OP_FLOW_GET; |
973 | op.u.flow_get.key = key; | |
974 | op.u.flow_get.key_len = key_len; | |
70e5ed6f | 975 | op.u.flow_get.ufid = ufid; |
1c1e46ed | 976 | op.u.flow_get.pmd_id = pmd_id; |
6fe09f8c | 977 | op.u.flow_get.buffer = buf; |
70e5ed6f JS |
978 | |
979 | memset(flow, 0, sizeof *flow); | |
6fe09f8c JS |
980 | op.u.flow_get.flow = flow; |
981 | op.u.flow_get.flow->key = key; | |
982 | op.u.flow_get.flow->key_len = key_len; | |
96fba48f | 983 | |
6fe09f8c JS |
984 | opp = &op; |
985 | dpif_operate(dpif, &opp, 1); | |
986 | ||
987 | return op.error; | |
064af421 BP |
988 | } |
989 | ||
1a0c894a | 990 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_PUT. */ |
064af421 | 991 | int |
ba25b8f4 | 992 | dpif_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, |
feebdea2 | 993 | const struct nlattr *key, size_t key_len, |
e6cc0bab | 994 | const struct nlattr *mask, size_t mask_len, |
feebdea2 | 995 | const struct nlattr *actions, size_t actions_len, |
bd5131ba | 996 | const ovs_u128 *ufid, const unsigned pmd_id, |
1c1e46ed | 997 | struct dpif_flow_stats *stats) |
064af421 | 998 | { |
1a0c894a BP |
999 | struct dpif_op *opp; |
1000 | struct dpif_op op; | |
1001 | ||
1002 | op.type = DPIF_OP_FLOW_PUT; | |
1003 | op.u.flow_put.flags = flags; | |
1004 | op.u.flow_put.key = key; | |
1005 | op.u.flow_put.key_len = key_len; | |
1006 | op.u.flow_put.mask = mask; | |
1007 | op.u.flow_put.mask_len = mask_len; | |
1008 | op.u.flow_put.actions = actions; | |
1009 | op.u.flow_put.actions_len = actions_len; | |
70e5ed6f | 1010 | op.u.flow_put.ufid = ufid; |
1c1e46ed | 1011 | op.u.flow_put.pmd_id = pmd_id; |
1a0c894a BP |
1012 | op.u.flow_put.stats = stats; |
1013 | ||
1014 | opp = &op; | |
1015 | dpif_operate(dpif, &opp, 1); | |
1016 | ||
1017 | return op.error; | |
064af421 BP |
1018 | } |
1019 | ||
1a0c894a | 1020 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_DEL. */ |
064af421 | 1021 | int |
feebdea2 | 1022 | dpif_flow_del(struct dpif *dpif, |
70e5ed6f | 1023 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 1024 | const unsigned pmd_id, struct dpif_flow_stats *stats) |
064af421 | 1025 | { |
1a0c894a BP |
1026 | struct dpif_op *opp; |
1027 | struct dpif_op op; | |
1028 | ||
1029 | op.type = DPIF_OP_FLOW_DEL; | |
1030 | op.u.flow_del.key = key; | |
1031 | op.u.flow_del.key_len = key_len; | |
70e5ed6f | 1032 | op.u.flow_del.ufid = ufid; |
1c1e46ed | 1033 | op.u.flow_del.pmd_id = pmd_id; |
1a0c894a | 1034 | op.u.flow_del.stats = stats; |
8e1ffd75 | 1035 | op.u.flow_del.terse = false; |
f1aa2072 | 1036 | |
1a0c894a BP |
1037 | opp = &op; |
1038 | dpif_operate(dpif, &opp, 1); | |
1039 | ||
1040 | return op.error; | |
064af421 BP |
1041 | } |
1042 | ||
ac64794a | 1043 | /* Creates and returns a new 'struct dpif_flow_dump' for iterating through the |
64bb477f JS |
1044 | * flows in 'dpif'. If 'terse' is true, then only UFID and statistics will |
1045 | * be returned in the dump. Otherwise, all fields will be returned. | |
ac64794a BP |
1046 | * |
1047 | * This function always successfully returns a dpif_flow_dump. Error | |
1048 | * reporting is deferred to dpif_flow_dump_destroy(). */ | |
1049 | struct dpif_flow_dump * | |
7e8b7199 | 1050 | dpif_flow_dump_create(const struct dpif *dpif, bool terse, char *type) |
e723fd32 | 1051 | { |
7e8b7199 | 1052 | return dpif->dpif_class->flow_dump_create(dpif, terse, type); |
e723fd32 JS |
1053 | } |
1054 | ||
ac64794a BP |
1055 | /* Destroys 'dump', which must have been created with dpif_flow_dump_create(). |
1056 | * All dpif_flow_dump_thread structures previously created for 'dump' must | |
1057 | * previously have been destroyed. | |
1058 | * | |
1059 | * Returns 0 if the dump operation was error-free, otherwise a positive errno | |
1060 | * value describing the problem. */ | |
1061 | int | |
1062 | dpif_flow_dump_destroy(struct dpif_flow_dump *dump) | |
e723fd32 | 1063 | { |
ac64794a BP |
1064 | const struct dpif *dpif = dump->dpif; |
1065 | int error = dpif->dpif_class->flow_dump_destroy(dump); | |
1066 | log_operation(dpif, "flow_dump_destroy", error); | |
1067 | return error == EOF ? 0 : error; | |
e723fd32 JS |
1068 | } |
1069 | ||
ac64794a BP |
1070 | /* Returns new thread-local state for use with dpif_flow_dump_next(). */ |
1071 | struct dpif_flow_dump_thread * | |
1072 | dpif_flow_dump_thread_create(struct dpif_flow_dump *dump) | |
064af421 | 1073 | { |
ac64794a | 1074 | return dump->dpif->dpif_class->flow_dump_thread_create(dump); |
064af421 BP |
1075 | } |
1076 | ||
ac64794a BP |
1077 | /* Releases 'thread'. */ |
1078 | void | |
1079 | dpif_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread) | |
704a1e09 | 1080 | { |
ac64794a | 1081 | thread->dpif->dpif_class->flow_dump_thread_destroy(thread); |
704a1e09 BP |
1082 | } |
1083 | ||
ac64794a BP |
1084 | /* Attempts to retrieve up to 'max_flows' more flows from 'thread'. Returns 0 |
1085 | * if and only if no flows remained to be retrieved, otherwise a positive | |
1086 | * number reflecting the number of elements in 'flows[]' that were updated. | |
1087 | * The number of flows returned might be less than 'max_flows' because | |
1088 | * fewer than 'max_flows' remained, because this particular datapath does not | |
1089 | * benefit from batching, or because an error occurred partway through | |
1090 | * retrieval. Thus, the caller should continue calling until a 0 return value, | |
1091 | * even if intermediate return values are less than 'max_flows'. | |
bdeadfdd | 1092 | * |
ac64794a BP |
1093 | * No error status is immediately provided. An error status for the entire |
1094 | * dump operation is provided when it is completed by calling | |
1095 | * dpif_flow_dump_destroy(). | |
bdeadfdd | 1096 | * |
ac64794a BP |
1097 | * All of the data stored into 'flows' is owned by the datapath, not by the |
1098 | * caller, and the caller must not modify or free it. The datapath guarantees | |
58df55ce JS |
1099 | * that it remains accessible and unchanged until the first of: |
1100 | * - The next call to dpif_flow_dump_next() for 'thread', or | |
1101 | * - The next rcu quiescent period. */ | |
704a1e09 | 1102 | int |
ac64794a BP |
1103 | dpif_flow_dump_next(struct dpif_flow_dump_thread *thread, |
1104 | struct dpif_flow *flows, int max_flows) | |
704a1e09 | 1105 | { |
ac64794a BP |
1106 | struct dpif *dpif = thread->dpif; |
1107 | int n; | |
1108 | ||
1109 | ovs_assert(max_flows > 0); | |
1110 | n = dpif->dpif_class->flow_dump_next(thread, flows, max_flows); | |
1111 | if (n > 0) { | |
1112 | struct dpif_flow *f; | |
1113 | ||
eff1e5b0 RD |
1114 | for (f = flows; f < &flows[n] |
1115 | && should_log_flow_message(&this_module, 0); f++) { | |
1116 | log_flow_message(dpif, 0, &this_module, "flow_dump", | |
ac64794a | 1117 | f->key, f->key_len, f->mask, f->mask_len, |
70e5ed6f | 1118 | &f->ufid, &f->stats, f->actions, f->actions_len); |
ac64794a BP |
1119 | } |
1120 | } else { | |
1121 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all flows", dpif_name(dpif)); | |
1122 | } | |
1123 | return n; | |
064af421 BP |
1124 | } |
1125 | ||
7fd91025 BP |
1126 | struct dpif_execute_helper_aux { |
1127 | struct dpif *dpif; | |
1cceb31b | 1128 | const struct flow *flow; |
7fd91025 | 1129 | int error; |
076caa2f | 1130 | const struct nlattr *meter_action; /* Non-NULL, if have a meter action. */ |
7fd91025 BP |
1131 | }; |
1132 | ||
09f9da0b JR |
1133 | /* This is called for actions that need the context of the datapath to be |
1134 | * meaningful. */ | |
7fd91025 | 1135 | static void |
1895cc8d | 1136 | dpif_execute_helper_cb(void *aux_, struct dp_packet_batch *packets_, |
18b58592 | 1137 | const struct nlattr *action, bool may_steal) |
7fd91025 | 1138 | { |
758c456d | 1139 | struct dpif_execute_helper_aux *aux = aux_; |
09f9da0b | 1140 | int type = nl_attr_type(action); |
1895cc8d | 1141 | struct dp_packet *packet = packets_->packets[0]; |
8cbf4f47 | 1142 | |
1895cc8d | 1143 | ovs_assert(packets_->count == 1); |
758c456d | 1144 | |
09f9da0b | 1145 | switch ((enum ovs_action_attr)type) { |
076caa2f JR |
1146 | case OVS_ACTION_ATTR_METER: |
1147 | /* Maintain a pointer to the first meter action seen. */ | |
1148 | if (!aux->meter_action) { | |
1149 | aux->meter_action = action; | |
1150 | } | |
1151 | break; | |
1152 | ||
07659514 | 1153 | case OVS_ACTION_ATTR_CT: |
09f9da0b | 1154 | case OVS_ACTION_ATTR_OUTPUT: |
a36de779 PS |
1155 | case OVS_ACTION_ATTR_TUNNEL_PUSH: |
1156 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
09f9da0b | 1157 | case OVS_ACTION_ATTR_USERSPACE: |
2b651e44 BP |
1158 | case OVS_ACTION_ATTR_RECIRC: { |
1159 | struct dpif_execute execute; | |
1160 | struct ofpbuf execute_actions; | |
1161 | uint64_t stub[256 / 8]; | |
cf62fa4c | 1162 | struct pkt_metadata *md = &packet->md; |
2b651e44 | 1163 | |
076caa2f JR |
1164 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
1165 | ofpbuf_use_stub(&execute_actions, stub, sizeof stub); | |
1166 | ||
1167 | if (aux->meter_action) { | |
1168 | const struct nlattr *a = aux->meter_action; | |
1169 | ||
1170 | /* XXX: This code collects meter actions since the last action | |
1171 | * execution via the datapath to be executed right before the | |
1172 | * current action that needs to be executed by the datapath. | |
1173 | * This is only an approximation, but better than nothing. | |
1174 | * Fundamentally, we should have a mechanism by which the | |
1175 | * datapath could return the result of the meter action so that | |
1176 | * we could execute them at the right order. */ | |
1177 | do { | |
1178 | ofpbuf_put(&execute_actions, a, NLA_ALIGN(a->nla_len)); | |
1179 | /* Find next meter action before 'action', if any. */ | |
1180 | do { | |
1181 | a = nl_attr_next(a); | |
1182 | } while (a != action && | |
1183 | nl_attr_type(a) != OVS_ACTION_ATTR_METER); | |
1184 | } while (a != action); | |
1185 | } | |
1186 | ||
2b651e44 BP |
1187 | /* The Linux kernel datapath throws away the tunnel information |
1188 | * that we supply as metadata. We have to use a "set" action to | |
1189 | * supply it. */ | |
076caa2f JR |
1190 | if (md->tunnel.ip_dst) { |
1191 | odp_put_tunnel_action(&md->tunnel, &execute_actions); | |
1192 | } | |
2b651e44 BP |
1193 | ofpbuf_put(&execute_actions, action, NLA_ALIGN(action->nla_len)); |
1194 | ||
6fd6ed71 PS |
1195 | execute.actions = execute_actions.data; |
1196 | execute.actions_len = execute_actions.size; | |
2b651e44 BP |
1197 | } else { |
1198 | execute.actions = action; | |
1199 | execute.actions_len = NLA_ALIGN(action->nla_len); | |
1200 | } | |
1201 | ||
18b58592 AZ |
1202 | struct dp_packet *clone = NULL; |
1203 | uint32_t cutlen = dp_packet_get_cutlen(packet); | |
1204 | if (cutlen && (type == OVS_ACTION_ATTR_OUTPUT | |
1205 | || type == OVS_ACTION_ATTR_TUNNEL_PUSH | |
1206 | || type == OVS_ACTION_ATTR_TUNNEL_POP | |
1207 | || type == OVS_ACTION_ATTR_USERSPACE)) { | |
1208 | dp_packet_reset_cutlen(packet); | |
aaca4fe0 | 1209 | if (!may_steal) { |
18b58592 | 1210 | packet = clone = dp_packet_clone(packet); |
aaca4fe0 | 1211 | } |
aaca4fe0 | 1212 | dp_packet_set_size(packet, dp_packet_size(packet) - cutlen); |
aaca4fe0 WT |
1213 | } |
1214 | ||
8cbf4f47 | 1215 | execute.packet = packet; |
1cceb31b | 1216 | execute.flow = aux->flow; |
758c456d | 1217 | execute.needs_help = false; |
43f9ac0a | 1218 | execute.probe = false; |
27130224 | 1219 | execute.mtu = 0; |
1a0c894a | 1220 | aux->error = dpif_execute(aux->dpif, &execute); |
eff1e5b0 RD |
1221 | log_execute_message(aux->dpif, &this_module, &execute, |
1222 | true, aux->error); | |
fc65bafc | 1223 | |
18b58592 AZ |
1224 | dp_packet_delete(clone); |
1225 | ||
076caa2f | 1226 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
2b651e44 | 1227 | ofpbuf_uninit(&execute_actions); |
076caa2f JR |
1228 | |
1229 | /* Do not re-use the same meters for later output actions. */ | |
1230 | aux->meter_action = NULL; | |
2b651e44 | 1231 | } |
09f9da0b | 1232 | break; |
2b651e44 | 1233 | } |
758c456d | 1234 | |
c6bf49f3 | 1235 | case OVS_ACTION_ATTR_HASH: |
09f9da0b JR |
1236 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1237 | case OVS_ACTION_ATTR_POP_VLAN: | |
1238 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
1239 | case OVS_ACTION_ATTR_POP_MPLS: | |
1240 | case OVS_ACTION_ATTR_SET: | |
6d670e7f | 1241 | case OVS_ACTION_ATTR_SET_MASKED: |
09f9da0b | 1242 | case OVS_ACTION_ATTR_SAMPLE: |
aaca4fe0 | 1243 | case OVS_ACTION_ATTR_TRUNC: |
6fcecb85 YY |
1244 | case OVS_ACTION_ATTR_PUSH_ETH: |
1245 | case OVS_ACTION_ATTR_POP_ETH: | |
535e3acf | 1246 | case OVS_ACTION_ATTR_CLONE: |
09f9da0b JR |
1247 | case OVS_ACTION_ATTR_UNSPEC: |
1248 | case __OVS_ACTION_ATTR_MAX: | |
1249 | OVS_NOT_REACHED(); | |
1250 | } | |
7fd91025 BP |
1251 | } |
1252 | ||
1253 | /* Executes 'execute' by performing most of the actions in userspace and | |
1254 | * passing the fully constructed packets to 'dpif' for output and userspace | |
1255 | * actions. | |
1256 | * | |
1257 | * This helps with actions that a given 'dpif' doesn't implement directly. */ | |
1258 | static int | |
758c456d | 1259 | dpif_execute_with_help(struct dpif *dpif, struct dpif_execute *execute) |
7fd91025 | 1260 | { |
076caa2f | 1261 | struct dpif_execute_helper_aux aux = {dpif, execute->flow, 0, NULL}; |
1895cc8d | 1262 | struct dp_packet_batch pb; |
7fd91025 BP |
1263 | |
1264 | COVERAGE_INC(dpif_execute_with_help); | |
1265 | ||
72c84bc2 | 1266 | dp_packet_batch_init_packet(&pb, execute->packet); |
1895cc8d | 1267 | odp_execute_actions(&aux, &pb, false, execute->actions, |
91088554 | 1268 | execute->actions_len, dpif_execute_helper_cb); |
7fd91025 BP |
1269 | return aux.error; |
1270 | } | |
1271 | ||
87e5119b BP |
1272 | /* Returns true if the datapath needs help executing 'execute'. */ |
1273 | static bool | |
1274 | dpif_execute_needs_help(const struct dpif_execute *execute) | |
1275 | { | |
1276 | return execute->needs_help || nl_attr_oversized(execute->actions_len); | |
1277 | } | |
1278 | ||
1a0c894a | 1279 | /* A dpif_operate() wrapper for performing a single DPIF_OP_EXECUTE. */ |
758c456d JR |
1280 | int |
1281 | dpif_execute(struct dpif *dpif, struct dpif_execute *execute) | |
89625d1e | 1282 | { |
1a0c894a BP |
1283 | if (execute->actions_len) { |
1284 | struct dpif_op *opp; | |
1285 | struct dpif_op op; | |
89625d1e | 1286 | |
1a0c894a BP |
1287 | op.type = DPIF_OP_EXECUTE; |
1288 | op.u.execute = *execute; | |
89625d1e | 1289 | |
1a0c894a BP |
1290 | opp = &op; |
1291 | dpif_operate(dpif, &opp, 1); | |
89625d1e | 1292 | |
1a0c894a BP |
1293 | return op.error; |
1294 | } else { | |
1295 | return 0; | |
1296 | } | |
89625d1e BP |
1297 | } |
1298 | ||
6bc60024 | 1299 | /* Executes each of the 'n_ops' operations in 'ops' on 'dpif', in the order in |
1a0c894a BP |
1300 | * which they are specified. Places each operation's results in the "output" |
1301 | * members documented in comments, and 0 in the 'error' member on success or a | |
1302 | * positive errno on failure. */ | |
6bc60024 | 1303 | void |
c2b565b5 | 1304 | dpif_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops) |
6bc60024 | 1305 | { |
1a0c894a BP |
1306 | while (n_ops > 0) { |
1307 | size_t chunk; | |
7fd91025 | 1308 | |
1a0c894a BP |
1309 | /* Count 'chunk', the number of ops that can be executed without |
1310 | * needing any help. Ops that need help should be rare, so we | |
1311 | * expect this to ordinarily be 'n_ops', that is, all the ops. */ | |
1312 | for (chunk = 0; chunk < n_ops; chunk++) { | |
1313 | struct dpif_op *op = ops[chunk]; | |
1314 | ||
1315 | if (op->type == DPIF_OP_EXECUTE | |
1316 | && dpif_execute_needs_help(&op->u.execute)) { | |
1317 | break; | |
1318 | } | |
1319 | } | |
7fd91025 | 1320 | |
1a0c894a BP |
1321 | if (chunk) { |
1322 | /* Execute a chunk full of ops that the dpif provider can | |
1323 | * handle itself, without help. */ | |
1324 | size_t i; | |
7fd91025 | 1325 | |
1a0c894a | 1326 | dpif->dpif_class->operate(dpif, ops, chunk); |
7fd91025 | 1327 | |
1a0c894a BP |
1328 | for (i = 0; i < chunk; i++) { |
1329 | struct dpif_op *op = ops[i]; | |
1330 | int error = op->error; | |
7fd91025 | 1331 | |
1a0c894a BP |
1332 | switch (op->type) { |
1333 | case DPIF_OP_FLOW_PUT: { | |
1334 | struct dpif_flow_put *put = &op->u.flow_put; | |
7fd91025 | 1335 | |
1a0c894a | 1336 | COVERAGE_INC(dpif_flow_put); |
eff1e5b0 | 1337 | log_flow_put_message(dpif, &this_module, put, error); |
1a0c894a BP |
1338 | if (error && put->stats) { |
1339 | memset(put->stats, 0, sizeof *put->stats); | |
7fd91025 | 1340 | } |
1a0c894a | 1341 | break; |
7fd91025 BP |
1342 | } |
1343 | ||
6fe09f8c JS |
1344 | case DPIF_OP_FLOW_GET: { |
1345 | struct dpif_flow_get *get = &op->u.flow_get; | |
1346 | ||
1347 | COVERAGE_INC(dpif_flow_get); | |
6fe09f8c JS |
1348 | if (error) { |
1349 | memset(get->flow, 0, sizeof *get->flow); | |
1350 | } | |
eff1e5b0 | 1351 | log_flow_get_message(dpif, &this_module, get, error); |
72d52166 | 1352 | |
6fe09f8c JS |
1353 | break; |
1354 | } | |
1355 | ||
1a0c894a BP |
1356 | case DPIF_OP_FLOW_DEL: { |
1357 | struct dpif_flow_del *del = &op->u.flow_del; | |
7fd91025 | 1358 | |
1a0c894a | 1359 | COVERAGE_INC(dpif_flow_del); |
eff1e5b0 | 1360 | log_flow_del_message(dpif, &this_module, del, error); |
1a0c894a BP |
1361 | if (error && del->stats) { |
1362 | memset(del->stats, 0, sizeof *del->stats); | |
1363 | } | |
1364 | break; | |
1365 | } | |
f23d2845 | 1366 | |
1a0c894a BP |
1367 | case DPIF_OP_EXECUTE: |
1368 | COVERAGE_INC(dpif_execute); | |
eff1e5b0 RD |
1369 | log_execute_message(dpif, &this_module, &op->u.execute, |
1370 | false, error); | |
1a0c894a BP |
1371 | break; |
1372 | } | |
1373 | } | |
b99d3cee | 1374 | |
1a0c894a BP |
1375 | ops += chunk; |
1376 | n_ops -= chunk; | |
1377 | } else { | |
1378 | /* Help the dpif provider to execute one op. */ | |
1379 | struct dpif_op *op = ops[0]; | |
b99d3cee | 1380 | |
1a0c894a BP |
1381 | COVERAGE_INC(dpif_execute); |
1382 | op->error = dpif_execute_with_help(dpif, &op->u.execute); | |
1383 | ops++; | |
1384 | n_ops--; | |
6bc60024 BP |
1385 | } |
1386 | } | |
1387 | } | |
1388 | ||
01545c1a BP |
1389 | /* Returns a string that represents 'type', for use in log messages. */ |
1390 | const char * | |
1391 | dpif_upcall_type_to_string(enum dpif_upcall_type type) | |
1392 | { | |
1393 | switch (type) { | |
1394 | case DPIF_UC_MISS: return "miss"; | |
1395 | case DPIF_UC_ACTION: return "action"; | |
01545c1a BP |
1396 | case DPIF_N_UC_TYPES: default: return "<unknown>"; |
1397 | } | |
1398 | } | |
1399 | ||
a12b3ead BP |
1400 | /* Enables or disables receiving packets with dpif_recv() on 'dpif'. Returns 0 |
1401 | * if successful, otherwise a positive errno value. | |
98403001 | 1402 | * |
a12b3ead | 1403 | * Turning packet receive off and then back on may change the Netlink PID |
98403001 BP |
1404 | * assignments returned by dpif_port_get_pid(). If the client does this, it |
1405 | * must update all of the flows that have OVS_ACTION_ATTR_USERSPACE actions | |
1406 | * using the new PID assignment. */ | |
8f24562a | 1407 | int |
a12b3ead | 1408 | dpif_recv_set(struct dpif *dpif, bool enable) |
8f24562a | 1409 | { |
6b31e073 RW |
1410 | int error = 0; |
1411 | ||
1412 | if (dpif->dpif_class->recv_set) { | |
1413 | error = dpif->dpif_class->recv_set(dpif, enable); | |
1414 | log_operation(dpif, "recv_set", error); | |
1415 | } | |
96fba48f | 1416 | return error; |
8f24562a BP |
1417 | } |
1418 | ||
1954e6bb AW |
1419 | /* Refreshes the poll loops and Netlink sockets associated to each port, |
1420 | * when the number of upcall handlers (upcall receiving thread) is changed | |
1421 | * to 'n_handlers' and receiving packets for 'dpif' is enabled by | |
1422 | * recv_set(). | |
1423 | * | |
1424 | * Since multiple upcall handlers can read upcalls simultaneously from | |
1425 | * 'dpif', each port can have multiple Netlink sockets, one per upcall | |
1426 | * handler. So, handlers_set() is responsible for the following tasks: | |
1427 | * | |
1428 | * When receiving upcall is enabled, extends or creates the | |
1429 | * configuration to support: | |
1430 | * | |
1431 | * - 'n_handlers' Netlink sockets for each port. | |
1432 | * | |
1433 | * - 'n_handlers' poll loops, one for each upcall handler. | |
1434 | * | |
1435 | * - registering the Netlink sockets for the same upcall handler to | |
1436 | * the corresponding poll loop. | |
1437 | * | |
1438 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1439 | int | |
1440 | dpif_handlers_set(struct dpif *dpif, uint32_t n_handlers) | |
1441 | { | |
6b31e073 RW |
1442 | int error = 0; |
1443 | ||
1444 | if (dpif->dpif_class->handlers_set) { | |
1445 | error = dpif->dpif_class->handlers_set(dpif, n_handlers); | |
1446 | log_operation(dpif, "handlers_set", error); | |
1447 | } | |
1954e6bb AW |
1448 | return error; |
1449 | } | |
1450 | ||
e4e74c3a AW |
1451 | void |
1452 | dpif_register_dp_purge_cb(struct dpif *dpif, dp_purge_callback *cb, void *aux) | |
1453 | { | |
1454 | if (dpif->dpif_class->register_dp_purge_cb) { | |
1455 | dpif->dpif_class->register_dp_purge_cb(dpif, cb, aux); | |
1456 | } | |
1457 | } | |
1458 | ||
6b31e073 | 1459 | void |
623540e4 | 1460 | dpif_register_upcall_cb(struct dpif *dpif, upcall_callback *cb, void *aux) |
6b31e073 RW |
1461 | { |
1462 | if (dpif->dpif_class->register_upcall_cb) { | |
623540e4 | 1463 | dpif->dpif_class->register_upcall_cb(dpif, cb, aux); |
6b31e073 RW |
1464 | } |
1465 | } | |
1466 | ||
1467 | void | |
1468 | dpif_enable_upcall(struct dpif *dpif) | |
1469 | { | |
1470 | if (dpif->dpif_class->enable_upcall) { | |
1471 | dpif->dpif_class->enable_upcall(dpif); | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | void | |
1476 | dpif_disable_upcall(struct dpif *dpif) | |
1477 | { | |
1478 | if (dpif->dpif_class->disable_upcall) { | |
1479 | dpif->dpif_class->disable_upcall(dpif); | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | void | |
1484 | dpif_print_packet(struct dpif *dpif, struct dpif_upcall *upcall) | |
1485 | { | |
1486 | if (!VLOG_DROP_DBG(&dpmsg_rl)) { | |
1487 | struct ds flow; | |
1488 | char *packet; | |
1489 | ||
2482b0b0 | 1490 | packet = ofp_dp_packet_to_string(&upcall->packet); |
6b31e073 RW |
1491 | |
1492 | ds_init(&flow); | |
1493 | odp_flow_key_format(upcall->key, upcall->key_len, &flow); | |
1494 | ||
1495 | VLOG_DBG("%s: %s upcall:\n%s\n%s", | |
1496 | dpif_name(dpif), dpif_upcall_type_to_string(upcall->type), | |
1497 | ds_cstr(&flow), packet); | |
1498 | ||
1499 | ds_destroy(&flow); | |
1500 | free(packet); | |
1501 | } | |
1502 | } | |
1503 | ||
d4f6865c DDP |
1504 | /* Pass custom configuration to the datapath implementation. Some of the |
1505 | * changes can be postponed until dpif_run() is called. */ | |
f2eee189 | 1506 | int |
d4f6865c | 1507 | dpif_set_config(struct dpif *dpif, const struct smap *cfg) |
f2eee189 AW |
1508 | { |
1509 | int error = 0; | |
1510 | ||
d4f6865c DDP |
1511 | if (dpif->dpif_class->set_config) { |
1512 | error = dpif->dpif_class->set_config(dpif, cfg); | |
f2eee189 | 1513 | if (error) { |
d4f6865c | 1514 | log_operation(dpif, "set_config", error); |
f2eee189 AW |
1515 | } |
1516 | } | |
1517 | ||
1518 | return error; | |
1519 | } | |
1520 | ||
1954e6bb AW |
1521 | /* Polls for an upcall from 'dpif' for an upcall handler. Since there |
1522 | * there can be multiple poll loops, 'handler_id' is needed as index to | |
1523 | * identify the corresponding poll loop. If successful, stores the upcall | |
1524 | * into '*upcall', using 'buf' for storage. Should only be called if | |
1525 | * 'recv_set' has been used to enable receiving packets from 'dpif'. | |
96fba48f | 1526 | * |
da546e07 JR |
1527 | * 'upcall->key' and 'upcall->userdata' point into data in the caller-provided |
1528 | * 'buf', so their memory cannot be freed separately from 'buf'. | |
856081f6 | 1529 | * |
837a88dc JR |
1530 | * The caller owns the data of 'upcall->packet' and may modify it. If |
1531 | * packet's headroom is exhausted as it is manipulated, 'upcall->packet' | |
1532 | * will be reallocated. This requires the data of 'upcall->packet' to be | |
1533 | * released with ofpbuf_uninit() before 'upcall' is destroyed. However, | |
1534 | * when an error is returned, the 'upcall->packet' may be uninitialized | |
1535 | * and should not be released. | |
1536 | * | |
96fba48f | 1537 | * Returns 0 if successful, otherwise a positive errno value. Returns EAGAIN |
856081f6 | 1538 | * if no upcall is immediately available. */ |
064af421 | 1539 | int |
1954e6bb AW |
1540 | dpif_recv(struct dpif *dpif, uint32_t handler_id, struct dpif_upcall *upcall, |
1541 | struct ofpbuf *buf) | |
064af421 | 1542 | { |
6b31e073 | 1543 | int error = EAGAIN; |
01545c1a | 1544 | |
6b31e073 RW |
1545 | if (dpif->dpif_class->recv) { |
1546 | error = dpif->dpif_class->recv(dpif, handler_id, upcall, buf); | |
1547 | if (!error) { | |
1548 | dpif_print_packet(dpif, upcall); | |
1549 | } else if (error != EAGAIN) { | |
1550 | log_operation(dpif, "recv", error); | |
1551 | } | |
064af421 | 1552 | } |
064af421 BP |
1553 | return error; |
1554 | } | |
1555 | ||
96fba48f | 1556 | /* Discards all messages that would otherwise be received by dpif_recv() on |
1ba530f4 BP |
1557 | * 'dpif'. */ |
1558 | void | |
96fba48f BP |
1559 | dpif_recv_purge(struct dpif *dpif) |
1560 | { | |
96fba48f | 1561 | COVERAGE_INC(dpif_purge); |
1ba530f4 BP |
1562 | if (dpif->dpif_class->recv_purge) { |
1563 | dpif->dpif_class->recv_purge(dpif); | |
96fba48f | 1564 | } |
96fba48f BP |
1565 | } |
1566 | ||
1954e6bb AW |
1567 | /* Arranges for the poll loop for an upcall handler to wake up when 'dpif' |
1568 | * 'dpif' has a message queued to be received with the recv member | |
1569 | * function. Since there can be multiple poll loops, 'handler_id' is | |
1570 | * needed as index to identify the corresponding poll loop. */ | |
064af421 | 1571 | void |
1954e6bb | 1572 | dpif_recv_wait(struct dpif *dpif, uint32_t handler_id) |
064af421 | 1573 | { |
6b31e073 RW |
1574 | if (dpif->dpif_class->recv_wait) { |
1575 | dpif->dpif_class->recv_wait(dpif, handler_id); | |
1576 | } | |
064af421 | 1577 | } |
53a4218d | 1578 | |
b5cbbcf6 AZ |
1579 | /* |
1580 | * Return the datapath version. Caller is responsible for freeing | |
1581 | * the string. | |
1582 | */ | |
1583 | char * | |
1584 | dpif_get_dp_version(const struct dpif *dpif) | |
1585 | { | |
1586 | char *version = NULL; | |
1587 | ||
1588 | if (dpif->dpif_class->get_datapath_version) { | |
1589 | version = dpif->dpif_class->get_datapath_version(); | |
1590 | } | |
1591 | ||
1592 | return version; | |
1593 | } | |
1594 | ||
96fba48f BP |
1595 | /* Obtains the NetFlow engine type and engine ID for 'dpif' into '*engine_type' |
1596 | * and '*engine_id', respectively. */ | |
53a4218d BP |
1597 | void |
1598 | dpif_get_netflow_ids(const struct dpif *dpif, | |
1599 | uint8_t *engine_type, uint8_t *engine_id) | |
1600 | { | |
96fba48f BP |
1601 | *engine_type = dpif->netflow_engine_type; |
1602 | *engine_id = dpif->netflow_engine_id; | |
1603 | } | |
aae51f53 BP |
1604 | |
1605 | /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a priority | |
abff858b PS |
1606 | * value used for setting packet priority. |
1607 | * On success, returns 0 and stores the priority into '*priority'. | |
1608 | * On failure, returns a positive errno value and stores 0 into '*priority'. */ | |
aae51f53 BP |
1609 | int |
1610 | dpif_queue_to_priority(const struct dpif *dpif, uint32_t queue_id, | |
1611 | uint32_t *priority) | |
1612 | { | |
1613 | int error = (dpif->dpif_class->queue_to_priority | |
1614 | ? dpif->dpif_class->queue_to_priority(dpif, queue_id, | |
1615 | priority) | |
1616 | : EOPNOTSUPP); | |
1617 | if (error) { | |
1618 | *priority = 0; | |
1619 | } | |
1620 | log_operation(dpif, "queue_to_priority", error); | |
1621 | return error; | |
1622 | } | |
96fba48f BP |
1623 | \f |
1624 | void | |
1acb6baa BP |
1625 | dpif_init(struct dpif *dpif, const struct dpif_class *dpif_class, |
1626 | const char *name, | |
96fba48f BP |
1627 | uint8_t netflow_engine_type, uint8_t netflow_engine_id) |
1628 | { | |
1acb6baa | 1629 | dpif->dpif_class = dpif_class; |
1a6f1e2a | 1630 | dpif->base_name = xstrdup(name); |
a4af0040 | 1631 | dpif->full_name = xasprintf("%s@%s", dpif_class->type, name); |
96fba48f BP |
1632 | dpif->netflow_engine_type = netflow_engine_type; |
1633 | dpif->netflow_engine_id = netflow_engine_id; | |
1634 | } | |
999401aa JG |
1635 | |
1636 | /* Undoes the results of initialization. | |
1637 | * | |
1638 | * Normally this function only needs to be called from dpif_close(). | |
1639 | * However, it may be called by providers due to an error on opening | |
1640 | * that occurs after initialization. It this case dpif_close() would | |
1641 | * never be called. */ | |
1642 | void | |
1643 | dpif_uninit(struct dpif *dpif, bool close) | |
1644 | { | |
1645 | char *base_name = dpif->base_name; | |
1646 | char *full_name = dpif->full_name; | |
1647 | ||
1648 | if (close) { | |
a4af0040 | 1649 | dpif->dpif_class->close(dpif); |
999401aa JG |
1650 | } |
1651 | ||
1652 | free(base_name); | |
1653 | free(full_name); | |
1654 | } | |
96fba48f BP |
1655 | \f |
1656 | static void | |
1657 | log_operation(const struct dpif *dpif, const char *operation, int error) | |
1658 | { | |
1659 | if (!error) { | |
1660 | VLOG_DBG_RL(&dpmsg_rl, "%s: %s success", dpif_name(dpif), operation); | |
90bf1e07 | 1661 | } else if (ofperr_is_valid(error)) { |
96fba48f | 1662 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
90bf1e07 | 1663 | dpif_name(dpif), operation, ofperr_get_name(error)); |
71ce9235 | 1664 | } else { |
90bf1e07 | 1665 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
10a89ef0 | 1666 | dpif_name(dpif), operation, ovs_strerror(error)); |
96fba48f BP |
1667 | } |
1668 | } | |
1669 | ||
1670 | static enum vlog_level | |
1671 | flow_message_log_level(int error) | |
1672 | { | |
9b1a48c2 JP |
1673 | /* If flows arrive in a batch, userspace may push down multiple |
1674 | * unique flow definitions that overlap when wildcards are applied. | |
1675 | * Kernels that support flow wildcarding will reject these flows as | |
1676 | * duplicates (EEXIST), so lower the log level to debug for these | |
1677 | * types of messages. */ | |
1678 | return (error && error != EEXIST) ? VLL_WARN : VLL_DBG; | |
96fba48f BP |
1679 | } |
1680 | ||
1681 | static bool | |
eff1e5b0 | 1682 | should_log_flow_message(const struct vlog_module *module, int error) |
96fba48f | 1683 | { |
eff1e5b0 | 1684 | return !vlog_should_drop(module, flow_message_log_level(error), |
96fba48f BP |
1685 | error ? &error_rl : &dpmsg_rl); |
1686 | } | |
1687 | ||
eff1e5b0 RD |
1688 | void |
1689 | log_flow_message(const struct dpif *dpif, int error, | |
1690 | const struct vlog_module *module, | |
1691 | const char *operation, | |
36956a7d | 1692 | const struct nlattr *key, size_t key_len, |
61fb711d | 1693 | const struct nlattr *mask, size_t mask_len, |
70e5ed6f | 1694 | const ovs_u128 *ufid, const struct dpif_flow_stats *stats, |
cf22f8cb | 1695 | const struct nlattr *actions, size_t actions_len) |
96fba48f BP |
1696 | { |
1697 | struct ds ds = DS_EMPTY_INITIALIZER; | |
1698 | ds_put_format(&ds, "%s: ", dpif_name(dpif)); | |
1699 | if (error) { | |
1700 | ds_put_cstr(&ds, "failed to "); | |
1701 | } | |
1702 | ds_put_format(&ds, "%s ", operation); | |
1703 | if (error) { | |
10a89ef0 | 1704 | ds_put_format(&ds, "(%s) ", ovs_strerror(error)); |
96fba48f | 1705 | } |
70e5ed6f JS |
1706 | if (ufid) { |
1707 | odp_format_ufid(ufid, &ds); | |
1708 | ds_put_cstr(&ds, " "); | |
1709 | } | |
0a37839c | 1710 | odp_flow_format(key, key_len, mask, mask_len, NULL, &ds, true); |
96fba48f BP |
1711 | if (stats) { |
1712 | ds_put_cstr(&ds, ", "); | |
c97fb132 | 1713 | dpif_flow_stats_format(stats, &ds); |
96fba48f | 1714 | } |
cdee00fd | 1715 | if (actions || actions_len) { |
96fba48f | 1716 | ds_put_cstr(&ds, ", actions:"); |
cdee00fd | 1717 | format_odp_actions(&ds, actions, actions_len); |
96fba48f | 1718 | } |
eff1e5b0 | 1719 | vlog(module, flow_message_log_level(error), "%s", ds_cstr(&ds)); |
96fba48f BP |
1720 | ds_destroy(&ds); |
1721 | } | |
89625d1e | 1722 | |
eff1e5b0 RD |
1723 | void |
1724 | log_flow_put_message(const struct dpif *dpif, | |
1725 | const struct vlog_module *module, | |
1726 | const struct dpif_flow_put *put, | |
89625d1e BP |
1727 | int error) |
1728 | { | |
eff1e5b0 RD |
1729 | if (should_log_flow_message(module, error) |
1730 | && !(put->flags & DPIF_FP_PROBE)) { | |
89625d1e BP |
1731 | struct ds s; |
1732 | ||
1733 | ds_init(&s); | |
1734 | ds_put_cstr(&s, "put"); | |
1735 | if (put->flags & DPIF_FP_CREATE) { | |
1736 | ds_put_cstr(&s, "[create]"); | |
1737 | } | |
1738 | if (put->flags & DPIF_FP_MODIFY) { | |
1739 | ds_put_cstr(&s, "[modify]"); | |
1740 | } | |
1741 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
1742 | ds_put_cstr(&s, "[zero]"); | |
1743 | } | |
eff1e5b0 | 1744 | log_flow_message(dpif, error, module, ds_cstr(&s), |
61fb711d | 1745 | put->key, put->key_len, put->mask, put->mask_len, |
70e5ed6f JS |
1746 | put->ufid, put->stats, put->actions, |
1747 | put->actions_len); | |
89625d1e BP |
1748 | ds_destroy(&s); |
1749 | } | |
1750 | } | |
1751 | ||
eff1e5b0 RD |
1752 | void |
1753 | log_flow_del_message(const struct dpif *dpif, | |
1754 | const struct vlog_module *module, | |
1755 | const struct dpif_flow_del *del, | |
b99d3cee BP |
1756 | int error) |
1757 | { | |
eff1e5b0 RD |
1758 | if (should_log_flow_message(module, error)) { |
1759 | log_flow_message(dpif, error, module, "flow_del", | |
1760 | del->key, del->key_len, | |
70e5ed6f JS |
1761 | NULL, 0, del->ufid, !error ? del->stats : NULL, |
1762 | NULL, 0); | |
b99d3cee BP |
1763 | } |
1764 | } | |
1765 | ||
f0fe12fc BP |
1766 | /* Logs that 'execute' was executed on 'dpif' and completed with errno 'error' |
1767 | * (0 for success). 'subexecute' should be true if the execution is a result | |
1768 | * of breaking down a larger execution that needed help, false otherwise. | |
1769 | * | |
1770 | * | |
1771 | * XXX In theory, the log message could be deceptive because this function is | |
1772 | * called after the dpif_provider's '->execute' function, which is allowed to | |
1773 | * modify execute->packet and execute->md. In practice, though: | |
1774 | * | |
93451a0a | 1775 | * - dpif-netlink doesn't modify execute->packet or execute->md. |
f0fe12fc BP |
1776 | * |
1777 | * - dpif-netdev does modify them but it is less likely to have problems | |
1778 | * because it is built into ovs-vswitchd and cannot have version skew, | |
1779 | * etc. | |
1780 | * | |
1781 | * It would still be better to avoid the potential problem. I don't know of a | |
1782 | * good way to do that, though, that isn't expensive. */ | |
eff1e5b0 RD |
1783 | void |
1784 | log_execute_message(const struct dpif *dpif, | |
1785 | const struct vlog_module *module, | |
1786 | const struct dpif_execute *execute, | |
fc65bafc | 1787 | bool subexecute, int error) |
89625d1e | 1788 | { |
43f9ac0a JR |
1789 | if (!(error ? VLOG_DROP_WARN(&error_rl) : VLOG_DROP_DBG(&dpmsg_rl)) |
1790 | && !execute->probe) { | |
89625d1e BP |
1791 | struct ds ds = DS_EMPTY_INITIALIZER; |
1792 | char *packet; | |
b701bce9 JR |
1793 | uint64_t stub[1024 / 8]; |
1794 | struct ofpbuf md = OFPBUF_STUB_INITIALIZER(stub); | |
89625d1e | 1795 | |
cf62fa4c | 1796 | packet = ofp_packet_to_string(dp_packet_data(execute->packet), |
2482b0b0 JS |
1797 | dp_packet_size(execute->packet), |
1798 | execute->packet->packet_type); | |
beb75a40 | 1799 | odp_key_from_dp_packet(&md, execute->packet); |
fc65bafc BP |
1800 | ds_put_format(&ds, "%s: %sexecute ", |
1801 | dpif_name(dpif), | |
1802 | (subexecute ? "sub-" | |
1803 | : dpif_execute_needs_help(execute) ? "super-" | |
1804 | : "")); | |
89625d1e BP |
1805 | format_odp_actions(&ds, execute->actions, execute->actions_len); |
1806 | if (error) { | |
10a89ef0 | 1807 | ds_put_format(&ds, " failed (%s)", ovs_strerror(error)); |
89625d1e BP |
1808 | } |
1809 | ds_put_format(&ds, " on packet %s", packet); | |
b701bce9 JR |
1810 | ds_put_format(&ds, " with metadata "); |
1811 | odp_flow_format(md.data, md.size, NULL, 0, NULL, &ds, true); | |
27130224 | 1812 | ds_put_format(&ds, " mtu %d", execute->mtu); |
eff1e5b0 | 1813 | vlog(module, error ? VLL_WARN : VLL_DBG, "%s", ds_cstr(&ds)); |
89625d1e BP |
1814 | ds_destroy(&ds); |
1815 | free(packet); | |
b701bce9 | 1816 | ofpbuf_uninit(&md); |
89625d1e BP |
1817 | } |
1818 | } | |
6fe09f8c | 1819 | |
eff1e5b0 RD |
1820 | void |
1821 | log_flow_get_message(const struct dpif *dpif, | |
1822 | const struct vlog_module *module, | |
1823 | const struct dpif_flow_get *get, | |
6fe09f8c JS |
1824 | int error) |
1825 | { | |
eff1e5b0 RD |
1826 | if (should_log_flow_message(module, error)) { |
1827 | log_flow_message(dpif, error, module, "flow_get", | |
6fe09f8c JS |
1828 | get->key, get->key_len, |
1829 | get->flow->mask, get->flow->mask_len, | |
70e5ed6f | 1830 | get->ufid, &get->flow->stats, |
6fe09f8c JS |
1831 | get->flow->actions, get->flow->actions_len); |
1832 | } | |
1833 | } | |
a36de779 PS |
1834 | |
1835 | bool | |
1836 | dpif_supports_tnl_push_pop(const struct dpif *dpif) | |
1837 | { | |
c4ea7529 | 1838 | return dpif_is_netdev(dpif); |
a36de779 | 1839 | } |
5dddf960 JR |
1840 | |
1841 | /* Meters */ | |
1842 | void | |
1843 | dpif_meter_get_features(const struct dpif *dpif, | |
1844 | struct ofputil_meter_features *features) | |
1845 | { | |
1846 | memset(features, 0, sizeof *features); | |
1847 | if (dpif->dpif_class->meter_get_features) { | |
1848 | dpif->dpif_class->meter_get_features(dpif, features); | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | /* Adds or modifies meter identified by 'meter_id' in 'dpif'. If '*meter_id' | |
1853 | * is UINT32_MAX, adds a new meter, otherwise modifies an existing meter. | |
1854 | * | |
1855 | * If meter is successfully added, sets '*meter_id' to the new meter's | |
1856 | * meter number. */ | |
1857 | int | |
1858 | dpif_meter_set(struct dpif *dpif, ofproto_meter_id *meter_id, | |
1859 | struct ofputil_meter_config *config) | |
1860 | { | |
1861 | int error; | |
1862 | ||
1863 | COVERAGE_INC(dpif_meter_set); | |
1864 | ||
1865 | error = dpif->dpif_class->meter_set(dpif, meter_id, config); | |
1866 | if (!error) { | |
1867 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" set", | |
1868 | dpif_name(dpif), meter_id->uint32); | |
1869 | } else { | |
1870 | VLOG_WARN_RL(&error_rl, "%s: failed to set DPIF meter %"PRIu32": %s", | |
1871 | dpif_name(dpif), meter_id->uint32, ovs_strerror(error)); | |
1872 | meter_id->uint32 = UINT32_MAX; | |
1873 | } | |
1874 | return error; | |
1875 | } | |
1876 | ||
1877 | int | |
1878 | dpif_meter_get(const struct dpif *dpif, ofproto_meter_id meter_id, | |
1879 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1880 | { | |
1881 | int error; | |
1882 | ||
1883 | COVERAGE_INC(dpif_meter_get); | |
1884 | ||
1885 | error = dpif->dpif_class->meter_get(dpif, meter_id, stats, n_bands); | |
1886 | if (!error) { | |
1887 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" get stats", | |
1888 | dpif_name(dpif), meter_id.uint32); | |
1889 | } else { | |
1890 | VLOG_WARN_RL(&error_rl, | |
1891 | "%s: failed to get DPIF meter %"PRIu32" stats: %s", | |
1892 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1893 | stats->packet_in_count = ~0; | |
1894 | stats->byte_in_count = ~0; | |
1895 | stats->n_bands = 0; | |
1896 | } | |
1897 | return error; | |
1898 | } | |
1899 | ||
1900 | int | |
1901 | dpif_meter_del(struct dpif *dpif, ofproto_meter_id meter_id, | |
1902 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1903 | { | |
1904 | int error; | |
1905 | ||
1906 | COVERAGE_INC(dpif_meter_del); | |
1907 | ||
1908 | error = dpif->dpif_class->meter_del(dpif, meter_id, stats, n_bands); | |
1909 | if (!error) { | |
1910 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" deleted", | |
1911 | dpif_name(dpif), meter_id.uint32); | |
1912 | } else { | |
1913 | VLOG_WARN_RL(&error_rl, | |
1914 | "%s: failed to delete DPIF meter %"PRIu32": %s", | |
1915 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1916 | if (stats) { | |
1917 | stats->packet_in_count = ~0; | |
1918 | stats->byte_in_count = ~0; | |
1919 | stats->n_bands = 0; | |
1920 | } | |
1921 | } | |
1922 | return error; | |
1923 | } |