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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" |
64c96779 | 37 | #include "openvswitch/ofpbuf.h" |
064af421 | 38 | #include "packets.h" |
fd016ae3 | 39 | #include "openvswitch/poll-loop.h" |
1bc50ef3 | 40 | #include "route-table.h" |
36f29fb1 | 41 | #include "seq.h" |
ee89ea7b | 42 | #include "openvswitch/shash.h" |
d0c23a1a | 43 | #include "sset.h" |
c97fb132 | 44 | #include "timeval.h" |
53902038 | 45 | #include "tnl-neigh-cache.h" |
a36de779 | 46 | #include "tnl-ports.h" |
064af421 | 47 | #include "util.h" |
78145f6e | 48 | #include "uuid.h" |
064af421 | 49 | #include "valgrind.h" |
e03c096d | 50 | #include "openvswitch/ofp-errors.h" |
e6211adc | 51 | #include "openvswitch/vlog.h" |
5136ce49 | 52 | |
d98e6007 | 53 | VLOG_DEFINE_THIS_MODULE(dpif); |
064af421 | 54 | |
d76f09ea BP |
55 | COVERAGE_DEFINE(dpif_destroy); |
56 | COVERAGE_DEFINE(dpif_port_add); | |
57 | COVERAGE_DEFINE(dpif_port_del); | |
58 | COVERAGE_DEFINE(dpif_flow_flush); | |
59 | COVERAGE_DEFINE(dpif_flow_get); | |
60 | COVERAGE_DEFINE(dpif_flow_put); | |
61 | COVERAGE_DEFINE(dpif_flow_del); | |
d76f09ea BP |
62 | COVERAGE_DEFINE(dpif_execute); |
63 | COVERAGE_DEFINE(dpif_purge); | |
7fd91025 | 64 | COVERAGE_DEFINE(dpif_execute_with_help); |
5dddf960 JR |
65 | COVERAGE_DEFINE(dpif_meter_set); |
66 | COVERAGE_DEFINE(dpif_meter_get); | |
67 | COVERAGE_DEFINE(dpif_meter_del); | |
d76f09ea | 68 | |
999401aa | 69 | static const struct dpif_class *base_dpif_classes[] = { |
93451a0a AS |
70 | #if defined(__linux__) || defined(_WIN32) |
71 | &dpif_netlink_class, | |
c83cdd30 | 72 | #endif |
72865317 | 73 | &dpif_netdev_class, |
c228a364 | 74 | }; |
999401aa JG |
75 | |
76 | struct registered_dpif_class { | |
d2d8fbeb | 77 | const struct dpif_class *dpif_class; |
999401aa JG |
78 | int refcount; |
79 | }; | |
80 | static struct shash dpif_classes = SHASH_INITIALIZER(&dpif_classes); | |
579a77e0 | 81 | static struct sset dpif_blacklist = SSET_INITIALIZER(&dpif_blacklist); |
c228a364 | 82 | |
5703b15f | 83 | /* Protects 'dpif_classes', including the refcount, and 'dpif_blacklist'. */ |
97be1538 | 84 | static struct ovs_mutex dpif_mutex = OVS_MUTEX_INITIALIZER; |
5703b15f | 85 | |
064af421 BP |
86 | /* Rate limit for individual messages going to or from the datapath, output at |
87 | * DBG level. This is very high because, if these are enabled, it is because | |
88 | * we really need to see them. */ | |
89 | static struct vlog_rate_limit dpmsg_rl = VLOG_RATE_LIMIT_INIT(600, 600); | |
90 | ||
91 | /* Not really much point in logging many dpif errors. */ | |
e2781405 | 92 | static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5); |
064af421 | 93 | |
96fba48f BP |
94 | static void log_operation(const struct dpif *, const char *operation, |
95 | int error); | |
eff1e5b0 RD |
96 | static bool should_log_flow_message(const struct vlog_module *module, |
97 | int error); | |
064af421 | 98 | |
36f29fb1 PS |
99 | /* Incremented whenever tnl route, arp, etc changes. */ |
100 | struct seq *tnl_conf_seq; | |
101 | ||
5119e258 DB |
102 | static bool |
103 | dpif_is_internal_port(const char *type) | |
104 | { | |
105 | /* For userspace datapath, tap devices are the equivalent | |
106 | * of internal devices in the kernel datapath, so both | |
107 | * these types are 'internal' devices. */ | |
108 | return !strcmp(type, "internal") || !strcmp(type, "tap"); | |
109 | } | |
110 | ||
999401aa JG |
111 | static void |
112 | dp_initialize(void) | |
113 | { | |
eb8ed438 | 114 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
999401aa | 115 | |
eb8ed438 | 116 | if (ovsthread_once_start(&once)) { |
999401aa JG |
117 | int i; |
118 | ||
36f29fb1 | 119 | tnl_conf_seq = seq_create(); |
fceef209 | 120 | dpctl_unixctl_register(); |
a36de779 | 121 | tnl_port_map_init(); |
53902038 | 122 | tnl_neigh_cache_init(); |
b772066f | 123 | route_table_init(); |
1bc50ef3 | 124 | |
36f29fb1 PS |
125 | for (i = 0; i < ARRAY_SIZE(base_dpif_classes); i++) { |
126 | dp_register_provider(base_dpif_classes[i]); | |
127 | } | |
128 | ||
1bc50ef3 | 129 | ovsthread_once_done(&once); |
999401aa JG |
130 | } |
131 | } | |
132 | ||
5703b15f BP |
133 | static int |
134 | dp_register_provider__(const struct dpif_class *new_class) | |
999401aa JG |
135 | { |
136 | struct registered_dpif_class *registered_class; | |
c8973eb6 | 137 | int error; |
999401aa | 138 | |
579a77e0 EJ |
139 | if (sset_contains(&dpif_blacklist, new_class->type)) { |
140 | VLOG_DBG("attempted to register blacklisted provider: %s", | |
141 | new_class->type); | |
142 | return EINVAL; | |
143 | } | |
144 | ||
999401aa JG |
145 | if (shash_find(&dpif_classes, new_class->type)) { |
146 | VLOG_WARN("attempted to register duplicate datapath provider: %s", | |
147 | new_class->type); | |
148 | return EEXIST; | |
149 | } | |
1a6f1e2a | 150 | |
c8973eb6 DDP |
151 | error = new_class->init ? new_class->init() : 0; |
152 | if (error) { | |
153 | VLOG_WARN("failed to initialize %s datapath class: %s", | |
154 | new_class->type, ovs_strerror(error)); | |
155 | return error; | |
156 | } | |
157 | ||
999401aa | 158 | registered_class = xmalloc(sizeof *registered_class); |
d2d8fbeb | 159 | registered_class->dpif_class = new_class; |
999401aa JG |
160 | registered_class->refcount = 0; |
161 | ||
162 | shash_add(&dpif_classes, new_class->type, registered_class); | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
5703b15f BP |
167 | /* Registers a new datapath provider. After successful registration, new |
168 | * datapaths of that type can be opened using dpif_open(). */ | |
169 | int | |
170 | dp_register_provider(const struct dpif_class *new_class) | |
171 | { | |
172 | int error; | |
173 | ||
97be1538 | 174 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 175 | error = dp_register_provider__(new_class); |
97be1538 | 176 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
177 | |
178 | return error; | |
179 | } | |
180 | ||
999401aa JG |
181 | /* Unregisters a datapath provider. 'type' must have been previously |
182 | * registered and not currently be in use by any dpifs. After unregistration | |
183 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
5703b15f BP |
184 | static int |
185 | dp_unregister_provider__(const char *type) | |
999401aa JG |
186 | { |
187 | struct shash_node *node; | |
188 | struct registered_dpif_class *registered_class; | |
189 | ||
190 | node = shash_find(&dpif_classes, type); | |
191 | if (!node) { | |
999401aa JG |
192 | return EAFNOSUPPORT; |
193 | } | |
194 | ||
195 | registered_class = node->data; | |
196 | if (registered_class->refcount) { | |
197 | VLOG_WARN("attempted to unregister in use datapath provider: %s", type); | |
198 | return EBUSY; | |
199 | } | |
200 | ||
201 | shash_delete(&dpif_classes, node); | |
202 | free(registered_class); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
5703b15f BP |
207 | /* Unregisters a datapath provider. 'type' must have been previously |
208 | * registered and not currently be in use by any dpifs. After unregistration | |
209 | * new datapaths of that type cannot be opened using dpif_open(). */ | |
210 | int | |
211 | dp_unregister_provider(const char *type) | |
212 | { | |
213 | int error; | |
214 | ||
215 | dp_initialize(); | |
216 | ||
97be1538 | 217 | ovs_mutex_lock(&dpif_mutex); |
5703b15f | 218 | error = dp_unregister_provider__(type); |
97be1538 | 219 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
220 | |
221 | return error; | |
222 | } | |
223 | ||
579a77e0 EJ |
224 | /* Blacklists a provider. Causes future calls of dp_register_provider() with |
225 | * a dpif_class which implements 'type' to fail. */ | |
226 | void | |
227 | dp_blacklist_provider(const char *type) | |
228 | { | |
97be1538 | 229 | ovs_mutex_lock(&dpif_mutex); |
579a77e0 | 230 | sset_add(&dpif_blacklist, type); |
97be1538 | 231 | ovs_mutex_unlock(&dpif_mutex); |
579a77e0 EJ |
232 | } |
233 | ||
5b5b11ea BP |
234 | /* Adds the types of all currently registered datapath providers to 'types'. |
235 | * The caller must first initialize the sset. */ | |
1a6f1e2a | 236 | void |
d0c23a1a | 237 | dp_enumerate_types(struct sset *types) |
1a6f1e2a | 238 | { |
999401aa | 239 | struct shash_node *node; |
1a6f1e2a | 240 | |
999401aa | 241 | dp_initialize(); |
1a6f1e2a | 242 | |
97be1538 | 243 | ovs_mutex_lock(&dpif_mutex); |
999401aa JG |
244 | SHASH_FOR_EACH(node, &dpif_classes) { |
245 | const struct registered_dpif_class *registered_class = node->data; | |
d0c23a1a | 246 | sset_add(types, registered_class->dpif_class->type); |
1a6f1e2a | 247 | } |
97be1538 | 248 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
249 | } |
250 | ||
251 | static void | |
252 | dp_class_unref(struct registered_dpif_class *rc) | |
253 | { | |
97be1538 | 254 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
255 | ovs_assert(rc->refcount); |
256 | rc->refcount--; | |
97be1538 | 257 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
258 | } |
259 | ||
260 | static struct registered_dpif_class * | |
261 | dp_class_lookup(const char *type) | |
262 | { | |
263 | struct registered_dpif_class *rc; | |
264 | ||
97be1538 | 265 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
266 | rc = shash_find_data(&dpif_classes, type); |
267 | if (rc) { | |
268 | rc->refcount++; | |
269 | } | |
97be1538 | 270 | ovs_mutex_unlock(&dpif_mutex); |
5703b15f BP |
271 | |
272 | return rc; | |
1a6f1e2a JG |
273 | } |
274 | ||
275 | /* Clears 'names' and enumerates the names of all known created datapaths with | |
d0c23a1a | 276 | * the given 'type'. The caller must first initialize the sset. Returns 0 if |
1a6f1e2a | 277 | * successful, otherwise a positive errno value. |
d3d22744 BP |
278 | * |
279 | * Some kinds of datapaths might not be practically enumerable. This is not | |
280 | * considered an error. */ | |
281 | int | |
d0c23a1a | 282 | dp_enumerate_names(const char *type, struct sset *names) |
d3d22744 | 283 | { |
5703b15f | 284 | struct registered_dpif_class *registered_class; |
999401aa JG |
285 | const struct dpif_class *dpif_class; |
286 | int error; | |
d3d22744 | 287 | |
999401aa | 288 | dp_initialize(); |
d0c23a1a | 289 | sset_clear(names); |
1a6f1e2a | 290 | |
5703b15f | 291 | registered_class = dp_class_lookup(type); |
999401aa JG |
292 | if (!registered_class) { |
293 | VLOG_WARN("could not enumerate unknown type: %s", type); | |
294 | return EAFNOSUPPORT; | |
295 | } | |
1a6f1e2a | 296 | |
d2d8fbeb | 297 | dpif_class = registered_class->dpif_class; |
2240af25 DDP |
298 | error = (dpif_class->enumerate |
299 | ? dpif_class->enumerate(names, dpif_class) | |
300 | : 0); | |
999401aa JG |
301 | if (error) { |
302 | VLOG_WARN("failed to enumerate %s datapaths: %s", dpif_class->type, | |
10a89ef0 | 303 | ovs_strerror(error)); |
d3d22744 | 304 | } |
5703b15f | 305 | dp_class_unref(registered_class); |
1a6f1e2a | 306 | |
999401aa | 307 | return error; |
1a6f1e2a JG |
308 | } |
309 | ||
54ed8a5d BP |
310 | /* Parses 'datapath_name_', which is of the form [type@]name into its |
311 | * component pieces. 'name' and 'type' must be freed by the caller. | |
312 | * | |
313 | * The returned 'type' is normalized, as if by dpif_normalize_type(). */ | |
1a6f1e2a JG |
314 | void |
315 | dp_parse_name(const char *datapath_name_, char **name, char **type) | |
316 | { | |
317 | char *datapath_name = xstrdup(datapath_name_); | |
318 | char *separator; | |
319 | ||
320 | separator = strchr(datapath_name, '@'); | |
321 | if (separator) { | |
322 | *separator = '\0'; | |
323 | *type = datapath_name; | |
54ed8a5d | 324 | *name = xstrdup(dpif_normalize_type(separator + 1)); |
1a6f1e2a JG |
325 | } else { |
326 | *name = datapath_name; | |
54ed8a5d | 327 | *type = xstrdup(dpif_normalize_type(NULL)); |
1a6f1e2a | 328 | } |
d3d22744 BP |
329 | } |
330 | ||
96fba48f | 331 | static int |
1a6f1e2a | 332 | do_open(const char *name, const char *type, bool create, struct dpif **dpifp) |
064af421 | 333 | { |
96fba48f | 334 | struct dpif *dpif = NULL; |
064af421 | 335 | int error; |
999401aa JG |
336 | struct registered_dpif_class *registered_class; |
337 | ||
338 | dp_initialize(); | |
064af421 | 339 | |
3a225db7 | 340 | type = dpif_normalize_type(type); |
5703b15f | 341 | registered_class = dp_class_lookup(type); |
999401aa JG |
342 | if (!registered_class) { |
343 | VLOG_WARN("could not create datapath %s of unknown type %s", name, | |
344 | type); | |
345 | error = EAFNOSUPPORT; | |
346 | goto exit; | |
347 | } | |
348 | ||
4a387741 BP |
349 | error = registered_class->dpif_class->open(registered_class->dpif_class, |
350 | name, create, &dpif); | |
999401aa | 351 | if (!error) { |
32b77c31 PB |
352 | struct dpif_port_dump port_dump; |
353 | struct dpif_port dpif_port; | |
354 | ||
cb22974d | 355 | ovs_assert(dpif->dpif_class == registered_class->dpif_class); |
32b77c31 PB |
356 | |
357 | DPIF_PORT_FOR_EACH(&dpif_port, &port_dump, dpif) { | |
358 | struct netdev *netdev; | |
359 | int err; | |
360 | ||
5119e258 | 361 | if (dpif_is_internal_port(dpif_port.type)) { |
32b77c31 PB |
362 | continue; |
363 | } | |
364 | ||
365 | err = netdev_open(dpif_port.name, dpif_port.type, &netdev); | |
366 | ||
367 | if (!err) { | |
dfaf79dd | 368 | netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port); |
32b77c31 PB |
369 | netdev_close(netdev); |
370 | } else { | |
57459d0d | 371 | VLOG_WARN("could not open netdev %s type %s: %s", |
5a0e4aec | 372 | dpif_port.name, dpif_port.type, ovs_strerror(err)); |
32b77c31 PB |
373 | } |
374 | } | |
5703b15f BP |
375 | } else { |
376 | dp_class_unref(registered_class); | |
064af421 | 377 | } |
064af421 | 378 | |
96fba48f BP |
379 | exit: |
380 | *dpifp = error ? NULL : dpif; | |
381 | return error; | |
064af421 BP |
382 | } |
383 | ||
1a6f1e2a JG |
384 | /* Tries to open an existing datapath named 'name' and type 'type'. Will fail |
385 | * if no datapath with 'name' and 'type' exists. 'type' may be either NULL or | |
386 | * the empty string to specify the default system type. Returns 0 if | |
387 | * successful, otherwise a positive errno value. On success stores a pointer | |
388 | * to the datapath in '*dpifp', otherwise a null pointer. */ | |
96fba48f | 389 | int |
1a6f1e2a | 390 | dpif_open(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 391 | { |
1a6f1e2a | 392 | return do_open(name, type, false, dpifp); |
064af421 BP |
393 | } |
394 | ||
1a6f1e2a JG |
395 | /* Tries to create and open a new datapath with the given 'name' and 'type'. |
396 | * 'type' may be either NULL or the empty string to specify the default system | |
397 | * type. Will fail if a datapath with 'name' and 'type' already exists. | |
398 | * Returns 0 if successful, otherwise a positive errno value. On success | |
399 | * stores a pointer to the datapath in '*dpifp', otherwise a null pointer. */ | |
064af421 | 400 | int |
1a6f1e2a | 401 | dpif_create(const char *name, const char *type, struct dpif **dpifp) |
064af421 | 402 | { |
1a6f1e2a | 403 | return do_open(name, type, true, dpifp); |
96fba48f | 404 | } |
064af421 | 405 | |
1a6f1e2a JG |
406 | /* Tries to open a datapath with the given 'name' and 'type', creating it if it |
407 | * does not exist. 'type' may be either NULL or the empty string to specify | |
408 | * the default system type. Returns 0 if successful, otherwise a positive | |
409 | * errno value. On success stores a pointer to the datapath in '*dpifp', | |
410 | * otherwise a null pointer. */ | |
efacbce6 | 411 | int |
1a6f1e2a | 412 | dpif_create_and_open(const char *name, const char *type, struct dpif **dpifp) |
efacbce6 BP |
413 | { |
414 | int error; | |
415 | ||
1a6f1e2a | 416 | error = dpif_create(name, type, dpifp); |
efacbce6 | 417 | if (error == EEXIST || error == EBUSY) { |
1a6f1e2a | 418 | error = dpif_open(name, type, dpifp); |
efacbce6 BP |
419 | if (error) { |
420 | VLOG_WARN("datapath %s already exists but cannot be opened: %s", | |
10a89ef0 | 421 | name, ovs_strerror(error)); |
efacbce6 BP |
422 | } |
423 | } else if (error) { | |
10a89ef0 BP |
424 | VLOG_WARN("failed to create datapath %s: %s", |
425 | name, ovs_strerror(error)); | |
efacbce6 BP |
426 | } |
427 | return error; | |
428 | } | |
429 | ||
71d90be1 RD |
430 | static void |
431 | dpif_remove_netdev_ports(struct dpif *dpif) { | |
432 | struct dpif_port_dump port_dump; | |
433 | struct dpif_port dpif_port; | |
434 | ||
435 | DPIF_PORT_FOR_EACH (&dpif_port, &port_dump, dpif) { | |
436 | if (!dpif_is_internal_port(dpif_port.type)) { | |
437 | netdev_ports_remove(dpif_port.port_no, dpif->dpif_class); | |
438 | } | |
439 | } | |
440 | } | |
441 | ||
96fba48f BP |
442 | /* Closes and frees the connection to 'dpif'. Does not destroy the datapath |
443 | * itself; call dpif_delete() first, instead, if that is desirable. */ | |
444 | void | |
445 | dpif_close(struct dpif *dpif) | |
446 | { | |
447 | if (dpif) { | |
5703b15f | 448 | struct registered_dpif_class *rc; |
999401aa | 449 | |
5703b15f | 450 | rc = shash_find_data(&dpif_classes, dpif->dpif_class->type); |
6595cb95 | 451 | |
71d90be1 RD |
452 | if (rc->refcount == 1) { |
453 | dpif_remove_netdev_ports(dpif); | |
6595cb95 | 454 | } |
999401aa | 455 | dpif_uninit(dpif, true); |
5703b15f | 456 | dp_class_unref(rc); |
064af421 BP |
457 | } |
458 | } | |
459 | ||
640e1b20 | 460 | /* Performs periodic work needed by 'dpif'. */ |
a36de779 | 461 | bool |
640e1b20 BP |
462 | dpif_run(struct dpif *dpif) |
463 | { | |
464 | if (dpif->dpif_class->run) { | |
a36de779 | 465 | return dpif->dpif_class->run(dpif); |
640e1b20 | 466 | } |
a36de779 | 467 | return false; |
640e1b20 BP |
468 | } |
469 | ||
470 | /* Arranges for poll_block() to wake up when dp_run() needs to be called for | |
471 | * 'dpif'. */ | |
472 | void | |
473 | dpif_wait(struct dpif *dpif) | |
474 | { | |
475 | if (dpif->dpif_class->wait) { | |
476 | dpif->dpif_class->wait(dpif); | |
477 | } | |
478 | } | |
479 | ||
1a6f1e2a JG |
480 | /* Returns the name of datapath 'dpif' prefixed with the type |
481 | * (for use in log messages). */ | |
b29ba128 BP |
482 | const char * |
483 | dpif_name(const struct dpif *dpif) | |
484 | { | |
1a6f1e2a JG |
485 | return dpif->full_name; |
486 | } | |
487 | ||
488 | /* Returns the name of datapath 'dpif' without the type | |
489 | * (for use in device names). */ | |
490 | const char * | |
491 | dpif_base_name(const struct dpif *dpif) | |
492 | { | |
493 | return dpif->base_name; | |
b29ba128 BP |
494 | } |
495 | ||
c7a26215 JP |
496 | /* Returns the type of datapath 'dpif'. */ |
497 | const char * | |
498 | dpif_type(const struct dpif *dpif) | |
499 | { | |
500 | return dpif->dpif_class->type; | |
501 | } | |
502 | ||
3a225db7 BP |
503 | /* Returns the fully spelled out name for the given datapath 'type'. |
504 | * | |
505 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
506 | * string might be the same even if they have different spellings. */ | |
507 | const char * | |
508 | dpif_normalize_type(const char *type) | |
509 | { | |
510 | return type && type[0] ? type : "system"; | |
511 | } | |
512 | ||
96fba48f BP |
513 | /* Destroys the datapath that 'dpif' is connected to, first removing all of its |
514 | * ports. After calling this function, it does not make sense to pass 'dpif' | |
515 | * to any functions other than dpif_name() or dpif_close(). */ | |
064af421 BP |
516 | int |
517 | dpif_delete(struct dpif *dpif) | |
518 | { | |
96fba48f BP |
519 | int error; |
520 | ||
064af421 | 521 | COVERAGE_INC(dpif_destroy); |
96fba48f | 522 | |
1acb6baa | 523 | error = dpif->dpif_class->destroy(dpif); |
96fba48f BP |
524 | log_operation(dpif, "delete", error); |
525 | return error; | |
064af421 BP |
526 | } |
527 | ||
96fba48f BP |
528 | /* Retrieves statistics for 'dpif' into 'stats'. Returns 0 if successful, |
529 | * otherwise a positive errno value. */ | |
064af421 | 530 | int |
a8d9304d | 531 | dpif_get_dp_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
064af421 | 532 | { |
1acb6baa | 533 | int error = dpif->dpif_class->get_stats(dpif, stats); |
96fba48f BP |
534 | if (error) { |
535 | memset(stats, 0, sizeof *stats); | |
536 | } | |
537 | log_operation(dpif, "get_stats", error); | |
538 | return error; | |
064af421 BP |
539 | } |
540 | ||
0aeaabc8 JP |
541 | const char * |
542 | dpif_port_open_type(const char *datapath_type, const char *port_type) | |
543 | { | |
5703b15f | 544 | struct registered_dpif_class *rc; |
0aeaabc8 JP |
545 | |
546 | datapath_type = dpif_normalize_type(datapath_type); | |
547 | ||
97be1538 | 548 | ovs_mutex_lock(&dpif_mutex); |
5703b15f BP |
549 | rc = shash_find_data(&dpif_classes, datapath_type); |
550 | if (rc && rc->dpif_class->port_open_type) { | |
551 | port_type = rc->dpif_class->port_open_type(rc->dpif_class, port_type); | |
0aeaabc8 | 552 | } |
97be1538 | 553 | ovs_mutex_unlock(&dpif_mutex); |
0aeaabc8 | 554 | |
5703b15f | 555 | return port_type; |
0aeaabc8 JP |
556 | } |
557 | ||
232dfa4a | 558 | /* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is |
4e022ec0 | 559 | * non-null and its value is not ODPP_NONE, then attempts to use the |
232dfa4a JP |
560 | * value as the port number. |
561 | * | |
562 | * If successful, returns 0 and sets '*port_nop' to the new port's port | |
563 | * number (if 'port_nop' is non-null). On failure, returns a positive | |
4e022ec0 | 564 | * errno value and sets '*port_nop' to ODPP_NONE (if 'port_nop' is |
232dfa4a | 565 | * non-null). */ |
064af421 | 566 | int |
4e022ec0 | 567 | dpif_port_add(struct dpif *dpif, struct netdev *netdev, odp_port_t *port_nop) |
064af421 | 568 | { |
c3827f61 | 569 | const char *netdev_name = netdev_get_name(netdev); |
4e022ec0 | 570 | odp_port_t port_no = ODPP_NONE; |
9ee3ae3e | 571 | int error; |
064af421 BP |
572 | |
573 | COVERAGE_INC(dpif_port_add); | |
9ee3ae3e | 574 | |
232dfa4a JP |
575 | if (port_nop) { |
576 | port_no = *port_nop; | |
577 | } | |
578 | ||
c3827f61 | 579 | error = dpif->dpif_class->port_add(dpif, netdev, &port_no); |
9ee3ae3e | 580 | if (!error) { |
9b56fe13 | 581 | VLOG_DBG_RL(&dpmsg_rl, "%s: added %s as port %"PRIu32, |
c3827f61 | 582 | dpif_name(dpif), netdev_name, port_no); |
32b77c31 | 583 | |
5119e258 DB |
584 | if (!dpif_is_internal_port(netdev_get_type(netdev))) { |
585 | ||
32b77c31 PB |
586 | struct dpif_port dpif_port; |
587 | ||
588 | dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev)); | |
589 | dpif_port.name = CONST_CAST(char *, netdev_name); | |
590 | dpif_port.port_no = port_no; | |
dfaf79dd | 591 | netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port); |
32b77c31 | 592 | } |
064af421 | 593 | } else { |
7521e0cf BP |
594 | if (error != EEXIST) { |
595 | VLOG_WARN_RL(&error_rl, "%s: failed to add %s as port: %s", | |
596 | dpif_name(dpif), netdev_name, ovs_strerror(error)); | |
597 | } else { | |
598 | /* It's fairly common for upper layers to try to add a duplicate | |
599 | * port, and they know how to handle it properly. */ | |
600 | } | |
4e022ec0 | 601 | port_no = ODPP_NONE; |
9ee3ae3e BP |
602 | } |
603 | if (port_nop) { | |
604 | *port_nop = port_no; | |
064af421 | 605 | } |
9ee3ae3e | 606 | return error; |
064af421 BP |
607 | } |
608 | ||
96fba48f BP |
609 | /* Attempts to remove 'dpif''s port number 'port_no'. Returns 0 if successful, |
610 | * otherwise a positive errno value. */ | |
064af421 | 611 | int |
97459c2f | 612 | dpif_port_del(struct dpif *dpif, odp_port_t port_no, bool local_delete) |
064af421 | 613 | { |
97459c2f | 614 | int error = 0; |
96fba48f | 615 | |
064af421 | 616 | COVERAGE_INC(dpif_port_del); |
96fba48f | 617 | |
97459c2f AV |
618 | if (!local_delete) { |
619 | error = dpif->dpif_class->port_del(dpif, port_no); | |
620 | if (!error) { | |
621 | VLOG_DBG_RL(&dpmsg_rl, "%s: port_del(%"PRIu32")", | |
622 | dpif_name(dpif), port_no); | |
623 | } else { | |
624 | log_operation(dpif, "port_del", error); | |
625 | } | |
a1811296 | 626 | } |
97459c2f AV |
627 | |
628 | netdev_ports_remove(port_no, dpif->dpif_class); | |
96fba48f | 629 | return error; |
064af421 BP |
630 | } |
631 | ||
4c738a8d BP |
632 | /* Makes a deep copy of 'src' into 'dst'. */ |
633 | void | |
634 | dpif_port_clone(struct dpif_port *dst, const struct dpif_port *src) | |
635 | { | |
636 | dst->name = xstrdup(src->name); | |
637 | dst->type = xstrdup(src->type); | |
638 | dst->port_no = src->port_no; | |
639 | } | |
640 | ||
641 | /* Frees memory allocated to members of 'dpif_port'. | |
642 | * | |
643 | * Do not call this function on a dpif_port obtained from | |
644 | * dpif_port_dump_next(): that function retains ownership of the data in the | |
645 | * dpif_port. */ | |
646 | void | |
647 | dpif_port_destroy(struct dpif_port *dpif_port) | |
648 | { | |
649 | free(dpif_port->name); | |
650 | free(dpif_port->type); | |
651 | } | |
652 | ||
4afba28d JP |
653 | /* Checks if port named 'devname' exists in 'dpif'. If so, returns |
654 | * true; otherwise, returns false. */ | |
655 | bool | |
656 | dpif_port_exists(const struct dpif *dpif, const char *devname) | |
657 | { | |
658 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, NULL); | |
0f6a066f | 659 | if (error != 0 && error != ENODEV) { |
4afba28d | 660 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %s: %s", |
10a89ef0 | 661 | dpif_name(dpif), devname, ovs_strerror(error)); |
4afba28d JP |
662 | } |
663 | ||
664 | return !error; | |
665 | } | |
666 | ||
91364d18 IM |
667 | /* Refreshes configuration of 'dpif's port. */ |
668 | int | |
669 | dpif_port_set_config(struct dpif *dpif, odp_port_t port_no, | |
670 | const struct smap *cfg) | |
671 | { | |
672 | int error = 0; | |
673 | ||
674 | if (dpif->dpif_class->port_set_config) { | |
675 | error = dpif->dpif_class->port_set_config(dpif, port_no, cfg); | |
676 | if (error) { | |
677 | log_operation(dpif, "port_set_config", error); | |
678 | } | |
679 | } | |
680 | ||
681 | return error; | |
682 | } | |
683 | ||
96fba48f BP |
684 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and |
685 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
686 | * value. |
687 | * | |
0f6a066f DDP |
688 | * Retuns ENODEV if the port doesn't exist. |
689 | * | |
4c738a8d BP |
690 | * The caller owns the data in 'port' and must free it with |
691 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 | 692 | int |
4e022ec0 | 693 | dpif_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 694 | struct dpif_port *port) |
064af421 | 695 | { |
1acb6baa | 696 | int error = dpif->dpif_class->port_query_by_number(dpif, port_no, port); |
96fba48f | 697 | if (!error) { |
9b56fe13 | 698 | VLOG_DBG_RL(&dpmsg_rl, "%s: port %"PRIu32" is device %s", |
4c738a8d | 699 | dpif_name(dpif), port_no, port->name); |
064af421 | 700 | } else { |
96fba48f | 701 | memset(port, 0, sizeof *port); |
9b56fe13 | 702 | VLOG_WARN_RL(&error_rl, "%s: failed to query port %"PRIu32": %s", |
10a89ef0 | 703 | dpif_name(dpif), port_no, ovs_strerror(error)); |
064af421 | 704 | } |
96fba48f | 705 | return error; |
064af421 BP |
706 | } |
707 | ||
96fba48f BP |
708 | /* Looks up port named 'devname' in 'dpif'. On success, returns 0 and |
709 | * initializes '*port' appropriately; on failure, returns a positive errno | |
4c738a8d BP |
710 | * value. |
711 | * | |
0f6a066f DDP |
712 | * Retuns ENODEV if the port doesn't exist. |
713 | * | |
4c738a8d BP |
714 | * The caller owns the data in 'port' and must free it with |
715 | * dpif_port_destroy() when it is no longer needed. */ | |
064af421 BP |
716 | int |
717 | dpif_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 718 | struct dpif_port *port) |
064af421 | 719 | { |
1acb6baa | 720 | int error = dpif->dpif_class->port_query_by_name(dpif, devname, port); |
96fba48f | 721 | if (!error) { |
9b56fe13 | 722 | VLOG_DBG_RL(&dpmsg_rl, "%s: device %s is on port %"PRIu32, |
4c738a8d | 723 | dpif_name(dpif), devname, port->port_no); |
064af421 | 724 | } else { |
96fba48f BP |
725 | memset(port, 0, sizeof *port); |
726 | ||
0f6a066f | 727 | /* For ENODEV we use DBG level because the caller is probably |
d647f0a7 BP |
728 | * interested in whether 'dpif' actually has a port 'devname', so that |
729 | * it's not an issue worth logging if it doesn't. Other errors are | |
730 | * uncommon and more likely to indicate a real problem. */ | |
0f6a066f | 731 | VLOG_RL(&error_rl, error == ENODEV ? VLL_DBG : VLL_WARN, |
d647f0a7 | 732 | "%s: failed to query port %s: %s", |
10a89ef0 | 733 | dpif_name(dpif), devname, ovs_strerror(error)); |
064af421 | 734 | } |
96fba48f | 735 | return error; |
064af421 BP |
736 | } |
737 | ||
1954e6bb AW |
738 | /* Returns the Netlink PID value to supply in OVS_ACTION_ATTR_USERSPACE |
739 | * actions as the OVS_USERSPACE_ATTR_PID attribute's value, for use in | |
740 | * flows whose packets arrived on port 'port_no'. In the case where the | |
741 | * provider allocates multiple Netlink PIDs to a single port, it may use | |
742 | * 'hash' to spread load among them. The caller need not use a particular | |
743 | * hash function; a 5-tuple hash is suitable. | |
744 | * | |
745 | * (The datapath implementation might use some different hash function for | |
746 | * distributing packets received via flow misses among PIDs. This means | |
747 | * that packets received via flow misses might be reordered relative to | |
748 | * packets received via userspace actions. This is not ordinarily a | |
749 | * problem.) | |
98403001 | 750 | * |
4e022ec0 | 751 | * A 'port_no' of ODPP_NONE is a special case: it returns a reserved PID, not |
625b0720 BP |
752 | * allocated to any port, that the client may use for special purposes. |
753 | * | |
98403001 BP |
754 | * The return value is only meaningful when DPIF_UC_ACTION has been enabled in |
755 | * the 'dpif''s listen mask. It is allowed to change when DPIF_UC_ACTION is | |
756 | * disabled and then re-enabled, so a client that does that must be prepared to | |
757 | * update all of the flows that it installed that contain | |
758 | * OVS_ACTION_ATTR_USERSPACE actions. */ | |
759 | uint32_t | |
1954e6bb | 760 | dpif_port_get_pid(const struct dpif *dpif, odp_port_t port_no, uint32_t hash) |
98403001 BP |
761 | { |
762 | return (dpif->dpif_class->port_get_pid | |
1954e6bb | 763 | ? (dpif->dpif_class->port_get_pid)(dpif, port_no, hash) |
98403001 BP |
764 | : 0); |
765 | } | |
766 | ||
96fba48f BP |
767 | /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and copies |
768 | * the port's name into the 'name_size' bytes in 'name', ensuring that the | |
769 | * result is null-terminated. On failure, returns a positive errno value and | |
770 | * makes 'name' the empty string. */ | |
335562c0 | 771 | int |
4e022ec0 | 772 | dpif_port_get_name(struct dpif *dpif, odp_port_t port_no, |
335562c0 BP |
773 | char *name, size_t name_size) |
774 | { | |
4c738a8d | 775 | struct dpif_port port; |
335562c0 BP |
776 | int error; |
777 | ||
cb22974d | 778 | ovs_assert(name_size > 0); |
335562c0 BP |
779 | |
780 | error = dpif_port_query_by_number(dpif, port_no, &port); | |
781 | if (!error) { | |
4c738a8d BP |
782 | ovs_strlcpy(name, port.name, name_size); |
783 | dpif_port_destroy(&port); | |
335562c0 BP |
784 | } else { |
785 | *name = '\0'; | |
786 | } | |
787 | return error; | |
788 | } | |
789 | ||
b0ec0f27 | 790 | /* Initializes 'dump' to begin dumping the ports in a dpif. |
96fba48f | 791 | * |
b0ec0f27 BP |
792 | * This function provides no status indication. An error status for the entire |
793 | * dump operation is provided when it is completed by calling | |
794 | * dpif_port_dump_done(). | |
795 | */ | |
796 | void | |
797 | dpif_port_dump_start(struct dpif_port_dump *dump, const struct dpif *dpif) | |
798 | { | |
799 | dump->dpif = dpif; | |
800 | dump->error = dpif->dpif_class->port_dump_start(dpif, &dump->state); | |
801 | log_operation(dpif, "port_dump_start", dump->error); | |
802 | } | |
803 | ||
804 | /* Attempts to retrieve another port from 'dump', which must have been | |
4c738a8d | 805 | * initialized with dpif_port_dump_start(). On success, stores a new dpif_port |
b0ec0f27 | 806 | * into 'port' and returns true. On failure, returns false. |
96fba48f | 807 | * |
b0ec0f27 BP |
808 | * Failure might indicate an actual error or merely that the last port has been |
809 | * dumped. An error status for the entire dump operation is provided when it | |
4c738a8d BP |
810 | * is completed by calling dpif_port_dump_done(). |
811 | * | |
812 | * The dpif owns the data stored in 'port'. It will remain valid until at | |
813 | * least the next time 'dump' is passed to dpif_port_dump_next() or | |
814 | * dpif_port_dump_done(). */ | |
b0ec0f27 | 815 | bool |
4c738a8d | 816 | dpif_port_dump_next(struct dpif_port_dump *dump, struct dpif_port *port) |
064af421 | 817 | { |
b0ec0f27 | 818 | const struct dpif *dpif = dump->dpif; |
064af421 | 819 | |
b0ec0f27 BP |
820 | if (dump->error) { |
821 | return false; | |
822 | } | |
f4ba4c4f | 823 | |
b0ec0f27 BP |
824 | dump->error = dpif->dpif_class->port_dump_next(dpif, dump->state, port); |
825 | if (dump->error == EOF) { | |
826 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all ports", dpif_name(dpif)); | |
827 | } else { | |
828 | log_operation(dpif, "port_dump_next", dump->error); | |
829 | } | |
064af421 | 830 | |
b0ec0f27 BP |
831 | if (dump->error) { |
832 | dpif->dpif_class->port_dump_done(dpif, dump->state); | |
833 | return false; | |
f4ba4c4f | 834 | } |
b0ec0f27 BP |
835 | return true; |
836 | } | |
064af421 | 837 | |
b0ec0f27 BP |
838 | /* Completes port table dump operation 'dump', which must have been initialized |
839 | * with dpif_port_dump_start(). Returns 0 if the dump operation was | |
840 | * error-free, otherwise a positive errno value describing the problem. */ | |
841 | int | |
842 | dpif_port_dump_done(struct dpif_port_dump *dump) | |
843 | { | |
844 | const struct dpif *dpif = dump->dpif; | |
845 | if (!dump->error) { | |
846 | dump->error = dpif->dpif_class->port_dump_done(dpif, dump->state); | |
847 | log_operation(dpif, "port_dump_done", dump->error); | |
f4ba4c4f | 848 | } |
b0ec0f27 | 849 | return dump->error == EOF ? 0 : dump->error; |
064af421 BP |
850 | } |
851 | ||
e9e28be3 BP |
852 | /* Polls for changes in the set of ports in 'dpif'. If the set of ports in |
853 | * 'dpif' has changed, this function does one of the following: | |
854 | * | |
855 | * - Stores the name of the device that was added to or deleted from 'dpif' in | |
856 | * '*devnamep' and returns 0. The caller is responsible for freeing | |
857 | * '*devnamep' (with free()) when it no longer needs it. | |
858 | * | |
859 | * - Returns ENOBUFS and sets '*devnamep' to NULL. | |
860 | * | |
861 | * This function may also return 'false positives', where it returns 0 and | |
862 | * '*devnamep' names a device that was not actually added or deleted or it | |
863 | * returns ENOBUFS without any change. | |
864 | * | |
865 | * Returns EAGAIN if the set of ports in 'dpif' has not changed. May also | |
866 | * return other positive errno values to indicate that something has gone | |
867 | * wrong. */ | |
868 | int | |
869 | dpif_port_poll(const struct dpif *dpif, char **devnamep) | |
870 | { | |
1acb6baa | 871 | int error = dpif->dpif_class->port_poll(dpif, devnamep); |
e9e28be3 BP |
872 | if (error) { |
873 | *devnamep = NULL; | |
874 | } | |
875 | return error; | |
876 | } | |
877 | ||
878 | /* Arranges for the poll loop to wake up when port_poll(dpif) will return a | |
879 | * value other than EAGAIN. */ | |
880 | void | |
881 | dpif_port_poll_wait(const struct dpif *dpif) | |
882 | { | |
1acb6baa | 883 | dpif->dpif_class->port_poll_wait(dpif); |
e9e28be3 BP |
884 | } |
885 | ||
572b7068 | 886 | /* Extracts the flow stats for a packet. The 'flow' and 'packet' |
a7752d4a BP |
887 | * arguments must have been initialized through a call to flow_extract(). |
888 | * 'used' is stored into stats->used. */ | |
572b7068 | 889 | void |
cf62fa4c | 890 | dpif_flow_stats_extract(const struct flow *flow, const struct dp_packet *packet, |
a7752d4a | 891 | long long int used, struct dpif_flow_stats *stats) |
572b7068 | 892 | { |
e0eecb1c | 893 | stats->tcp_flags = ntohs(flow->tcp_flags); |
cf62fa4c | 894 | stats->n_bytes = dp_packet_size(packet); |
572b7068 | 895 | stats->n_packets = 1; |
a7752d4a | 896 | stats->used = used; |
572b7068 BP |
897 | } |
898 | ||
c97fb132 BP |
899 | /* Appends a human-readable representation of 'stats' to 's'. */ |
900 | void | |
901 | dpif_flow_stats_format(const struct dpif_flow_stats *stats, struct ds *s) | |
902 | { | |
903 | ds_put_format(s, "packets:%"PRIu64", bytes:%"PRIu64", used:", | |
904 | stats->n_packets, stats->n_bytes); | |
905 | if (stats->used) { | |
906 | ds_put_format(s, "%.3fs", (time_msec() - stats->used) / 1000.0); | |
907 | } else { | |
908 | ds_put_format(s, "never"); | |
909 | } | |
7393104d BP |
910 | if (stats->tcp_flags) { |
911 | ds_put_cstr(s, ", flags:"); | |
912 | packet_format_tcp_flags(s, stats->tcp_flags); | |
913 | } | |
c97fb132 BP |
914 | } |
915 | ||
7af12bd7 JS |
916 | /* Places the hash of the 'key_len' bytes starting at 'key' into '*hash'. */ |
917 | void | |
918 | dpif_flow_hash(const struct dpif *dpif OVS_UNUSED, | |
919 | const void *key, size_t key_len, ovs_u128 *hash) | |
920 | { | |
921 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
922 | static uint32_t secret; | |
923 | ||
924 | if (ovsthread_once_start(&once)) { | |
925 | secret = random_uint32(); | |
926 | ovsthread_once_done(&once); | |
927 | } | |
928 | hash_bytes128(key, key_len, secret, hash); | |
78145f6e | 929 | uuid_set_bits_v4((struct uuid *)hash); |
7af12bd7 JS |
930 | } |
931 | ||
96fba48f BP |
932 | /* Deletes all flows from 'dpif'. Returns 0 if successful, otherwise a |
933 | * positive errno value. */ | |
934 | int | |
935 | dpif_flow_flush(struct dpif *dpif) | |
064af421 | 936 | { |
96fba48f BP |
937 | int error; |
938 | ||
939 | COVERAGE_INC(dpif_flow_flush); | |
940 | ||
1acb6baa | 941 | error = dpif->dpif_class->flow_flush(dpif); |
96fba48f BP |
942 | log_operation(dpif, "flow_flush", error); |
943 | return error; | |
064af421 BP |
944 | } |
945 | ||
2c85851f JS |
946 | /* Attempts to install 'key' into the datapath, fetches it, then deletes it. |
947 | * Returns true if the datapath supported installing 'flow', false otherwise. | |
948 | */ | |
949 | bool | |
950 | dpif_probe_feature(struct dpif *dpif, const char *name, | |
bb71c96e AZ |
951 | const struct ofpbuf *key, const struct ofpbuf *actions, |
952 | const ovs_u128 *ufid) | |
2c85851f JS |
953 | { |
954 | struct dpif_flow flow; | |
955 | struct ofpbuf reply; | |
956 | uint64_t stub[DPIF_FLOW_BUFSIZE / 8]; | |
957 | bool enable_feature = false; | |
958 | int error; | |
bb71c96e AZ |
959 | const struct nlattr *nl_actions = actions ? actions->data : NULL; |
960 | const size_t nl_actions_size = actions ? actions->size : 0; | |
2c85851f | 961 | |
9ab0fce1 JS |
962 | /* Use DPIF_FP_MODIFY to cover the case where ovs-vswitchd is killed (and |
963 | * restarted) at just the right time such that feature probes from the | |
964 | * previous run are still present in the datapath. */ | |
965 | error = dpif_flow_put(dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY | DPIF_FP_PROBE, | |
bb71c96e AZ |
966 | key->data, key->size, NULL, 0, |
967 | nl_actions, nl_actions_size, | |
f5d317a1 | 968 | ufid, NON_PMD_CORE_ID, NULL); |
9ab0fce1 | 969 | if (error) { |
b52ac659 | 970 | if (error != EINVAL && error != EOVERFLOW) { |
2c85851f JS |
971 | VLOG_WARN("%s: %s flow probe failed (%s)", |
972 | dpif_name(dpif), name, ovs_strerror(error)); | |
973 | } | |
974 | return false; | |
975 | } | |
976 | ||
977 | ofpbuf_use_stack(&reply, &stub, sizeof stub); | |
6fd6ed71 | 978 | error = dpif_flow_get(dpif, key->data, key->size, ufid, |
f5d317a1 | 979 | NON_PMD_CORE_ID, &reply, &flow); |
2c85851f | 980 | if (!error |
bdd7ecf5 | 981 | && (!ufid || (flow.ufid_present |
2ff8484b | 982 | && ovs_u128_equals(*ufid, flow.ufid)))) { |
2c85851f JS |
983 | enable_feature = true; |
984 | } | |
985 | ||
6fd6ed71 | 986 | error = dpif_flow_del(dpif, key->data, key->size, ufid, |
f5d317a1 | 987 | NON_PMD_CORE_ID, NULL); |
2c85851f JS |
988 | if (error) { |
989 | VLOG_WARN("%s: failed to delete %s feature probe flow", | |
990 | dpif_name(dpif), name); | |
991 | } | |
992 | ||
993 | return enable_feature; | |
994 | } | |
995 | ||
6fe09f8c | 996 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_GET. */ |
96fba48f | 997 | int |
6fe09f8c | 998 | dpif_flow_get(struct dpif *dpif, |
70e5ed6f | 999 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 1000 | const unsigned pmd_id, struct ofpbuf *buf, struct dpif_flow *flow) |
064af421 | 1001 | { |
6fe09f8c JS |
1002 | struct dpif_op *opp; |
1003 | struct dpif_op op; | |
96fba48f | 1004 | |
6fe09f8c | 1005 | op.type = DPIF_OP_FLOW_GET; |
fa37affa BP |
1006 | op.flow_get.key = key; |
1007 | op.flow_get.key_len = key_len; | |
1008 | op.flow_get.ufid = ufid; | |
1009 | op.flow_get.pmd_id = pmd_id; | |
1010 | op.flow_get.buffer = buf; | |
70e5ed6f JS |
1011 | |
1012 | memset(flow, 0, sizeof *flow); | |
fa37affa BP |
1013 | op.flow_get.flow = flow; |
1014 | op.flow_get.flow->key = key; | |
1015 | op.flow_get.flow->key_len = key_len; | |
96fba48f | 1016 | |
6fe09f8c JS |
1017 | opp = &op; |
1018 | dpif_operate(dpif, &opp, 1); | |
1019 | ||
1020 | return op.error; | |
064af421 BP |
1021 | } |
1022 | ||
1a0c894a | 1023 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_PUT. */ |
064af421 | 1024 | int |
ba25b8f4 | 1025 | dpif_flow_put(struct dpif *dpif, enum dpif_flow_put_flags flags, |
feebdea2 | 1026 | const struct nlattr *key, size_t key_len, |
e6cc0bab | 1027 | const struct nlattr *mask, size_t mask_len, |
feebdea2 | 1028 | const struct nlattr *actions, size_t actions_len, |
bd5131ba | 1029 | const ovs_u128 *ufid, const unsigned pmd_id, |
1c1e46ed | 1030 | struct dpif_flow_stats *stats) |
064af421 | 1031 | { |
1a0c894a BP |
1032 | struct dpif_op *opp; |
1033 | struct dpif_op op; | |
1034 | ||
1035 | op.type = DPIF_OP_FLOW_PUT; | |
fa37affa BP |
1036 | op.flow_put.flags = flags; |
1037 | op.flow_put.key = key; | |
1038 | op.flow_put.key_len = key_len; | |
1039 | op.flow_put.mask = mask; | |
1040 | op.flow_put.mask_len = mask_len; | |
1041 | op.flow_put.actions = actions; | |
1042 | op.flow_put.actions_len = actions_len; | |
1043 | op.flow_put.ufid = ufid; | |
1044 | op.flow_put.pmd_id = pmd_id; | |
1045 | op.flow_put.stats = stats; | |
1a0c894a BP |
1046 | |
1047 | opp = &op; | |
1048 | dpif_operate(dpif, &opp, 1); | |
1049 | ||
1050 | return op.error; | |
064af421 BP |
1051 | } |
1052 | ||
1a0c894a | 1053 | /* A dpif_operate() wrapper for performing a single DPIF_OP_FLOW_DEL. */ |
064af421 | 1054 | int |
feebdea2 | 1055 | dpif_flow_del(struct dpif *dpif, |
70e5ed6f | 1056 | const struct nlattr *key, size_t key_len, const ovs_u128 *ufid, |
bd5131ba | 1057 | const unsigned pmd_id, struct dpif_flow_stats *stats) |
064af421 | 1058 | { |
1a0c894a BP |
1059 | struct dpif_op *opp; |
1060 | struct dpif_op op; | |
1061 | ||
1062 | op.type = DPIF_OP_FLOW_DEL; | |
fa37affa BP |
1063 | op.flow_del.key = key; |
1064 | op.flow_del.key_len = key_len; | |
1065 | op.flow_del.ufid = ufid; | |
1066 | op.flow_del.pmd_id = pmd_id; | |
1067 | op.flow_del.stats = stats; | |
1068 | op.flow_del.terse = false; | |
f1aa2072 | 1069 | |
1a0c894a BP |
1070 | opp = &op; |
1071 | dpif_operate(dpif, &opp, 1); | |
1072 | ||
1073 | return op.error; | |
064af421 BP |
1074 | } |
1075 | ||
ac64794a | 1076 | /* Creates and returns a new 'struct dpif_flow_dump' for iterating through the |
64bb477f JS |
1077 | * flows in 'dpif'. If 'terse' is true, then only UFID and statistics will |
1078 | * be returned in the dump. Otherwise, all fields will be returned. | |
ac64794a BP |
1079 | * |
1080 | * This function always successfully returns a dpif_flow_dump. Error | |
1081 | * reporting is deferred to dpif_flow_dump_destroy(). */ | |
1082 | struct dpif_flow_dump * | |
494a7455 | 1083 | dpif_flow_dump_create(const struct dpif *dpif, bool terse, char *type) |
e723fd32 | 1084 | { |
494a7455 | 1085 | return dpif->dpif_class->flow_dump_create(dpif, terse, type); |
e723fd32 JS |
1086 | } |
1087 | ||
ac64794a BP |
1088 | /* Destroys 'dump', which must have been created with dpif_flow_dump_create(). |
1089 | * All dpif_flow_dump_thread structures previously created for 'dump' must | |
1090 | * previously have been destroyed. | |
1091 | * | |
1092 | * Returns 0 if the dump operation was error-free, otherwise a positive errno | |
1093 | * value describing the problem. */ | |
1094 | int | |
1095 | dpif_flow_dump_destroy(struct dpif_flow_dump *dump) | |
e723fd32 | 1096 | { |
ac64794a BP |
1097 | const struct dpif *dpif = dump->dpif; |
1098 | int error = dpif->dpif_class->flow_dump_destroy(dump); | |
1099 | log_operation(dpif, "flow_dump_destroy", error); | |
1100 | return error == EOF ? 0 : error; | |
e723fd32 JS |
1101 | } |
1102 | ||
ac64794a BP |
1103 | /* Returns new thread-local state for use with dpif_flow_dump_next(). */ |
1104 | struct dpif_flow_dump_thread * | |
1105 | dpif_flow_dump_thread_create(struct dpif_flow_dump *dump) | |
064af421 | 1106 | { |
ac64794a | 1107 | return dump->dpif->dpif_class->flow_dump_thread_create(dump); |
064af421 BP |
1108 | } |
1109 | ||
ac64794a BP |
1110 | /* Releases 'thread'. */ |
1111 | void | |
1112 | dpif_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread) | |
704a1e09 | 1113 | { |
ac64794a | 1114 | thread->dpif->dpif_class->flow_dump_thread_destroy(thread); |
704a1e09 BP |
1115 | } |
1116 | ||
ac64794a BP |
1117 | /* Attempts to retrieve up to 'max_flows' more flows from 'thread'. Returns 0 |
1118 | * if and only if no flows remained to be retrieved, otherwise a positive | |
1119 | * number reflecting the number of elements in 'flows[]' that were updated. | |
1120 | * The number of flows returned might be less than 'max_flows' because | |
1121 | * fewer than 'max_flows' remained, because this particular datapath does not | |
1122 | * benefit from batching, or because an error occurred partway through | |
1123 | * retrieval. Thus, the caller should continue calling until a 0 return value, | |
1124 | * even if intermediate return values are less than 'max_flows'. | |
bdeadfdd | 1125 | * |
ac64794a BP |
1126 | * No error status is immediately provided. An error status for the entire |
1127 | * dump operation is provided when it is completed by calling | |
1128 | * dpif_flow_dump_destroy(). | |
bdeadfdd | 1129 | * |
ac64794a BP |
1130 | * All of the data stored into 'flows' is owned by the datapath, not by the |
1131 | * caller, and the caller must not modify or free it. The datapath guarantees | |
58df55ce JS |
1132 | * that it remains accessible and unchanged until the first of: |
1133 | * - The next call to dpif_flow_dump_next() for 'thread', or | |
1134 | * - The next rcu quiescent period. */ | |
704a1e09 | 1135 | int |
ac64794a BP |
1136 | dpif_flow_dump_next(struct dpif_flow_dump_thread *thread, |
1137 | struct dpif_flow *flows, int max_flows) | |
704a1e09 | 1138 | { |
ac64794a BP |
1139 | struct dpif *dpif = thread->dpif; |
1140 | int n; | |
1141 | ||
1142 | ovs_assert(max_flows > 0); | |
1143 | n = dpif->dpif_class->flow_dump_next(thread, flows, max_flows); | |
1144 | if (n > 0) { | |
1145 | struct dpif_flow *f; | |
1146 | ||
eff1e5b0 RD |
1147 | for (f = flows; f < &flows[n] |
1148 | && should_log_flow_message(&this_module, 0); f++) { | |
1149 | log_flow_message(dpif, 0, &this_module, "flow_dump", | |
ac64794a | 1150 | f->key, f->key_len, f->mask, f->mask_len, |
70e5ed6f | 1151 | &f->ufid, &f->stats, f->actions, f->actions_len); |
ac64794a BP |
1152 | } |
1153 | } else { | |
1154 | VLOG_DBG_RL(&dpmsg_rl, "%s: dumped all flows", dpif_name(dpif)); | |
1155 | } | |
1156 | return n; | |
064af421 BP |
1157 | } |
1158 | ||
7fd91025 BP |
1159 | struct dpif_execute_helper_aux { |
1160 | struct dpif *dpif; | |
1cceb31b | 1161 | const struct flow *flow; |
7fd91025 | 1162 | int error; |
076caa2f | 1163 | const struct nlattr *meter_action; /* Non-NULL, if have a meter action. */ |
7fd91025 BP |
1164 | }; |
1165 | ||
09f9da0b JR |
1166 | /* This is called for actions that need the context of the datapath to be |
1167 | * meaningful. */ | |
7fd91025 | 1168 | static void |
1895cc8d | 1169 | dpif_execute_helper_cb(void *aux_, struct dp_packet_batch *packets_, |
7d7ded7a | 1170 | const struct nlattr *action, bool should_steal) |
7fd91025 | 1171 | { |
758c456d | 1172 | struct dpif_execute_helper_aux *aux = aux_; |
09f9da0b | 1173 | int type = nl_attr_type(action); |
1895cc8d | 1174 | struct dp_packet *packet = packets_->packets[0]; |
8cbf4f47 | 1175 | |
1895cc8d | 1176 | ovs_assert(packets_->count == 1); |
758c456d | 1177 | |
09f9da0b | 1178 | switch ((enum ovs_action_attr)type) { |
076caa2f JR |
1179 | case OVS_ACTION_ATTR_METER: |
1180 | /* Maintain a pointer to the first meter action seen. */ | |
1181 | if (!aux->meter_action) { | |
1182 | aux->meter_action = action; | |
1183 | } | |
5a0e4aec | 1184 | break; |
076caa2f | 1185 | |
07659514 | 1186 | case OVS_ACTION_ATTR_CT: |
09f9da0b | 1187 | case OVS_ACTION_ATTR_OUTPUT: |
a36de779 PS |
1188 | case OVS_ACTION_ATTR_TUNNEL_PUSH: |
1189 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
09f9da0b | 1190 | case OVS_ACTION_ATTR_USERSPACE: |
2b651e44 BP |
1191 | case OVS_ACTION_ATTR_RECIRC: { |
1192 | struct dpif_execute execute; | |
1193 | struct ofpbuf execute_actions; | |
1194 | uint64_t stub[256 / 8]; | |
cf62fa4c | 1195 | struct pkt_metadata *md = &packet->md; |
2b651e44 | 1196 | |
076caa2f JR |
1197 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
1198 | ofpbuf_use_stub(&execute_actions, stub, sizeof stub); | |
1199 | ||
1200 | if (aux->meter_action) { | |
1201 | const struct nlattr *a = aux->meter_action; | |
1202 | ||
1203 | /* XXX: This code collects meter actions since the last action | |
1204 | * execution via the datapath to be executed right before the | |
1205 | * current action that needs to be executed by the datapath. | |
1206 | * This is only an approximation, but better than nothing. | |
1207 | * Fundamentally, we should have a mechanism by which the | |
1208 | * datapath could return the result of the meter action so that | |
1209 | * we could execute them at the right order. */ | |
1210 | do { | |
1211 | ofpbuf_put(&execute_actions, a, NLA_ALIGN(a->nla_len)); | |
1212 | /* Find next meter action before 'action', if any. */ | |
1213 | do { | |
1214 | a = nl_attr_next(a); | |
1215 | } while (a != action && | |
1216 | nl_attr_type(a) != OVS_ACTION_ATTR_METER); | |
1217 | } while (a != action); | |
1218 | } | |
1219 | ||
2b651e44 BP |
1220 | /* The Linux kernel datapath throws away the tunnel information |
1221 | * that we supply as metadata. We have to use a "set" action to | |
1222 | * supply it. */ | |
076caa2f | 1223 | if (md->tunnel.ip_dst) { |
c6d87201 | 1224 | odp_put_tunnel_action(&md->tunnel, &execute_actions, NULL); |
076caa2f | 1225 | } |
2b651e44 BP |
1226 | ofpbuf_put(&execute_actions, action, NLA_ALIGN(action->nla_len)); |
1227 | ||
6fd6ed71 PS |
1228 | execute.actions = execute_actions.data; |
1229 | execute.actions_len = execute_actions.size; | |
2b651e44 BP |
1230 | } else { |
1231 | execute.actions = action; | |
1232 | execute.actions_len = NLA_ALIGN(action->nla_len); | |
1233 | } | |
1234 | ||
18b58592 AZ |
1235 | struct dp_packet *clone = NULL; |
1236 | uint32_t cutlen = dp_packet_get_cutlen(packet); | |
1237 | if (cutlen && (type == OVS_ACTION_ATTR_OUTPUT | |
1238 | || type == OVS_ACTION_ATTR_TUNNEL_PUSH | |
1239 | || type == OVS_ACTION_ATTR_TUNNEL_POP | |
1240 | || type == OVS_ACTION_ATTR_USERSPACE)) { | |
1241 | dp_packet_reset_cutlen(packet); | |
7d7ded7a | 1242 | if (!should_steal) { |
18b58592 | 1243 | packet = clone = dp_packet_clone(packet); |
aaca4fe0 | 1244 | } |
aaca4fe0 | 1245 | dp_packet_set_size(packet, dp_packet_size(packet) - cutlen); |
aaca4fe0 WT |
1246 | } |
1247 | ||
8cbf4f47 | 1248 | execute.packet = packet; |
1cceb31b | 1249 | execute.flow = aux->flow; |
758c456d | 1250 | execute.needs_help = false; |
43f9ac0a | 1251 | execute.probe = false; |
27130224 | 1252 | execute.mtu = 0; |
1a0c894a | 1253 | aux->error = dpif_execute(aux->dpif, &execute); |
eff1e5b0 RD |
1254 | log_execute_message(aux->dpif, &this_module, &execute, |
1255 | true, aux->error); | |
fc65bafc | 1256 | |
18b58592 AZ |
1257 | dp_packet_delete(clone); |
1258 | ||
076caa2f | 1259 | if (flow_tnl_dst_is_set(&md->tunnel) || aux->meter_action) { |
2b651e44 | 1260 | ofpbuf_uninit(&execute_actions); |
076caa2f JR |
1261 | |
1262 | /* Do not re-use the same meters for later output actions. */ | |
1263 | aux->meter_action = NULL; | |
2b651e44 | 1264 | } |
09f9da0b | 1265 | break; |
2b651e44 | 1266 | } |
758c456d | 1267 | |
c6bf49f3 | 1268 | case OVS_ACTION_ATTR_HASH: |
09f9da0b JR |
1269 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1270 | case OVS_ACTION_ATTR_POP_VLAN: | |
1271 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
1272 | case OVS_ACTION_ATTR_POP_MPLS: | |
1273 | case OVS_ACTION_ATTR_SET: | |
6d670e7f | 1274 | case OVS_ACTION_ATTR_SET_MASKED: |
09f9da0b | 1275 | case OVS_ACTION_ATTR_SAMPLE: |
aaca4fe0 | 1276 | case OVS_ACTION_ATTR_TRUNC: |
6fcecb85 YY |
1277 | case OVS_ACTION_ATTR_PUSH_ETH: |
1278 | case OVS_ACTION_ATTR_POP_ETH: | |
535e3acf | 1279 | case OVS_ACTION_ATTR_CLONE: |
f59cb331 YY |
1280 | case OVS_ACTION_ATTR_PUSH_NSH: |
1281 | case OVS_ACTION_ATTR_POP_NSH: | |
1fe178d2 | 1282 | case OVS_ACTION_ATTR_CT_CLEAR: |
09f9da0b JR |
1283 | case OVS_ACTION_ATTR_UNSPEC: |
1284 | case __OVS_ACTION_ATTR_MAX: | |
1285 | OVS_NOT_REACHED(); | |
1286 | } | |
7d7ded7a | 1287 | dp_packet_delete_batch(packets_, should_steal); |
7fd91025 BP |
1288 | } |
1289 | ||
1290 | /* Executes 'execute' by performing most of the actions in userspace and | |
1291 | * passing the fully constructed packets to 'dpif' for output and userspace | |
1292 | * actions. | |
1293 | * | |
1294 | * This helps with actions that a given 'dpif' doesn't implement directly. */ | |
1295 | static int | |
758c456d | 1296 | dpif_execute_with_help(struct dpif *dpif, struct dpif_execute *execute) |
7fd91025 | 1297 | { |
076caa2f | 1298 | struct dpif_execute_helper_aux aux = {dpif, execute->flow, 0, NULL}; |
1895cc8d | 1299 | struct dp_packet_batch pb; |
7fd91025 BP |
1300 | |
1301 | COVERAGE_INC(dpif_execute_with_help); | |
1302 | ||
72c84bc2 | 1303 | dp_packet_batch_init_packet(&pb, execute->packet); |
1895cc8d | 1304 | odp_execute_actions(&aux, &pb, false, execute->actions, |
91088554 | 1305 | execute->actions_len, dpif_execute_helper_cb); |
7fd91025 BP |
1306 | return aux.error; |
1307 | } | |
1308 | ||
87e5119b BP |
1309 | /* Returns true if the datapath needs help executing 'execute'. */ |
1310 | static bool | |
1311 | dpif_execute_needs_help(const struct dpif_execute *execute) | |
1312 | { | |
1313 | return execute->needs_help || nl_attr_oversized(execute->actions_len); | |
1314 | } | |
1315 | ||
1a0c894a | 1316 | /* A dpif_operate() wrapper for performing a single DPIF_OP_EXECUTE. */ |
758c456d JR |
1317 | int |
1318 | dpif_execute(struct dpif *dpif, struct dpif_execute *execute) | |
89625d1e | 1319 | { |
1a0c894a BP |
1320 | if (execute->actions_len) { |
1321 | struct dpif_op *opp; | |
1322 | struct dpif_op op; | |
89625d1e | 1323 | |
1a0c894a | 1324 | op.type = DPIF_OP_EXECUTE; |
fa37affa | 1325 | op.execute = *execute; |
89625d1e | 1326 | |
1a0c894a BP |
1327 | opp = &op; |
1328 | dpif_operate(dpif, &opp, 1); | |
89625d1e | 1329 | |
1a0c894a BP |
1330 | return op.error; |
1331 | } else { | |
1332 | return 0; | |
1333 | } | |
89625d1e BP |
1334 | } |
1335 | ||
6bc60024 | 1336 | /* Executes each of the 'n_ops' operations in 'ops' on 'dpif', in the order in |
1a0c894a BP |
1337 | * which they are specified. Places each operation's results in the "output" |
1338 | * members documented in comments, and 0 in the 'error' member on success or a | |
1339 | * positive errno on failure. */ | |
6bc60024 | 1340 | void |
c2b565b5 | 1341 | dpif_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops) |
6bc60024 | 1342 | { |
1a0c894a BP |
1343 | while (n_ops > 0) { |
1344 | size_t chunk; | |
7fd91025 | 1345 | |
1a0c894a BP |
1346 | /* Count 'chunk', the number of ops that can be executed without |
1347 | * needing any help. Ops that need help should be rare, so we | |
1348 | * expect this to ordinarily be 'n_ops', that is, all the ops. */ | |
1349 | for (chunk = 0; chunk < n_ops; chunk++) { | |
1350 | struct dpif_op *op = ops[chunk]; | |
1351 | ||
1352 | if (op->type == DPIF_OP_EXECUTE | |
fa37affa | 1353 | && dpif_execute_needs_help(&op->execute)) { |
1a0c894a BP |
1354 | break; |
1355 | } | |
1356 | } | |
7fd91025 | 1357 | |
1a0c894a BP |
1358 | if (chunk) { |
1359 | /* Execute a chunk full of ops that the dpif provider can | |
1360 | * handle itself, without help. */ | |
1361 | size_t i; | |
7fd91025 | 1362 | |
1a0c894a | 1363 | dpif->dpif_class->operate(dpif, ops, chunk); |
7fd91025 | 1364 | |
1a0c894a BP |
1365 | for (i = 0; i < chunk; i++) { |
1366 | struct dpif_op *op = ops[i]; | |
1367 | int error = op->error; | |
7fd91025 | 1368 | |
1a0c894a BP |
1369 | switch (op->type) { |
1370 | case DPIF_OP_FLOW_PUT: { | |
fa37affa | 1371 | struct dpif_flow_put *put = &op->flow_put; |
7fd91025 | 1372 | |
1a0c894a | 1373 | COVERAGE_INC(dpif_flow_put); |
eff1e5b0 | 1374 | log_flow_put_message(dpif, &this_module, put, error); |
1a0c894a BP |
1375 | if (error && put->stats) { |
1376 | memset(put->stats, 0, sizeof *put->stats); | |
7fd91025 | 1377 | } |
1a0c894a | 1378 | break; |
7fd91025 BP |
1379 | } |
1380 | ||
6fe09f8c | 1381 | case DPIF_OP_FLOW_GET: { |
fa37affa | 1382 | struct dpif_flow_get *get = &op->flow_get; |
6fe09f8c JS |
1383 | |
1384 | COVERAGE_INC(dpif_flow_get); | |
6fe09f8c JS |
1385 | if (error) { |
1386 | memset(get->flow, 0, sizeof *get->flow); | |
1387 | } | |
eff1e5b0 | 1388 | log_flow_get_message(dpif, &this_module, get, error); |
72d52166 | 1389 | |
6fe09f8c JS |
1390 | break; |
1391 | } | |
1392 | ||
1a0c894a | 1393 | case DPIF_OP_FLOW_DEL: { |
fa37affa | 1394 | struct dpif_flow_del *del = &op->flow_del; |
7fd91025 | 1395 | |
1a0c894a | 1396 | COVERAGE_INC(dpif_flow_del); |
eff1e5b0 | 1397 | log_flow_del_message(dpif, &this_module, del, error); |
1a0c894a BP |
1398 | if (error && del->stats) { |
1399 | memset(del->stats, 0, sizeof *del->stats); | |
1400 | } | |
1401 | break; | |
1402 | } | |
f23d2845 | 1403 | |
1a0c894a BP |
1404 | case DPIF_OP_EXECUTE: |
1405 | COVERAGE_INC(dpif_execute); | |
fa37affa | 1406 | log_execute_message(dpif, &this_module, &op->execute, |
eff1e5b0 | 1407 | false, error); |
1a0c894a BP |
1408 | break; |
1409 | } | |
1410 | } | |
b99d3cee | 1411 | |
1a0c894a BP |
1412 | ops += chunk; |
1413 | n_ops -= chunk; | |
1414 | } else { | |
1415 | /* Help the dpif provider to execute one op. */ | |
1416 | struct dpif_op *op = ops[0]; | |
b99d3cee | 1417 | |
1a0c894a | 1418 | COVERAGE_INC(dpif_execute); |
fa37affa | 1419 | op->error = dpif_execute_with_help(dpif, &op->execute); |
1a0c894a BP |
1420 | ops++; |
1421 | n_ops--; | |
6bc60024 BP |
1422 | } |
1423 | } | |
1424 | } | |
1425 | ||
01545c1a BP |
1426 | /* Returns a string that represents 'type', for use in log messages. */ |
1427 | const char * | |
1428 | dpif_upcall_type_to_string(enum dpif_upcall_type type) | |
1429 | { | |
1430 | switch (type) { | |
1431 | case DPIF_UC_MISS: return "miss"; | |
1432 | case DPIF_UC_ACTION: return "action"; | |
01545c1a BP |
1433 | case DPIF_N_UC_TYPES: default: return "<unknown>"; |
1434 | } | |
1435 | } | |
1436 | ||
a12b3ead BP |
1437 | /* Enables or disables receiving packets with dpif_recv() on 'dpif'. Returns 0 |
1438 | * if successful, otherwise a positive errno value. | |
98403001 | 1439 | * |
a12b3ead | 1440 | * Turning packet receive off and then back on may change the Netlink PID |
98403001 BP |
1441 | * assignments returned by dpif_port_get_pid(). If the client does this, it |
1442 | * must update all of the flows that have OVS_ACTION_ATTR_USERSPACE actions | |
1443 | * using the new PID assignment. */ | |
8f24562a | 1444 | int |
a12b3ead | 1445 | dpif_recv_set(struct dpif *dpif, bool enable) |
8f24562a | 1446 | { |
6b31e073 RW |
1447 | int error = 0; |
1448 | ||
1449 | if (dpif->dpif_class->recv_set) { | |
1450 | error = dpif->dpif_class->recv_set(dpif, enable); | |
1451 | log_operation(dpif, "recv_set", error); | |
1452 | } | |
96fba48f | 1453 | return error; |
8f24562a BP |
1454 | } |
1455 | ||
1954e6bb AW |
1456 | /* Refreshes the poll loops and Netlink sockets associated to each port, |
1457 | * when the number of upcall handlers (upcall receiving thread) is changed | |
1458 | * to 'n_handlers' and receiving packets for 'dpif' is enabled by | |
1459 | * recv_set(). | |
1460 | * | |
1461 | * Since multiple upcall handlers can read upcalls simultaneously from | |
1462 | * 'dpif', each port can have multiple Netlink sockets, one per upcall | |
1463 | * handler. So, handlers_set() is responsible for the following tasks: | |
1464 | * | |
1465 | * When receiving upcall is enabled, extends or creates the | |
1466 | * configuration to support: | |
1467 | * | |
1468 | * - 'n_handlers' Netlink sockets for each port. | |
1469 | * | |
1470 | * - 'n_handlers' poll loops, one for each upcall handler. | |
1471 | * | |
1472 | * - registering the Netlink sockets for the same upcall handler to | |
1473 | * the corresponding poll loop. | |
1474 | * | |
1475 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1476 | int | |
1477 | dpif_handlers_set(struct dpif *dpif, uint32_t n_handlers) | |
1478 | { | |
6b31e073 RW |
1479 | int error = 0; |
1480 | ||
1481 | if (dpif->dpif_class->handlers_set) { | |
1482 | error = dpif->dpif_class->handlers_set(dpif, n_handlers); | |
1483 | log_operation(dpif, "handlers_set", error); | |
1484 | } | |
1954e6bb AW |
1485 | return error; |
1486 | } | |
1487 | ||
e4e74c3a AW |
1488 | void |
1489 | dpif_register_dp_purge_cb(struct dpif *dpif, dp_purge_callback *cb, void *aux) | |
1490 | { | |
1491 | if (dpif->dpif_class->register_dp_purge_cb) { | |
1492 | dpif->dpif_class->register_dp_purge_cb(dpif, cb, aux); | |
1493 | } | |
1494 | } | |
1495 | ||
6b31e073 | 1496 | void |
623540e4 | 1497 | dpif_register_upcall_cb(struct dpif *dpif, upcall_callback *cb, void *aux) |
6b31e073 RW |
1498 | { |
1499 | if (dpif->dpif_class->register_upcall_cb) { | |
623540e4 | 1500 | dpif->dpif_class->register_upcall_cb(dpif, cb, aux); |
6b31e073 RW |
1501 | } |
1502 | } | |
1503 | ||
1504 | void | |
1505 | dpif_enable_upcall(struct dpif *dpif) | |
1506 | { | |
1507 | if (dpif->dpif_class->enable_upcall) { | |
1508 | dpif->dpif_class->enable_upcall(dpif); | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | void | |
1513 | dpif_disable_upcall(struct dpif *dpif) | |
1514 | { | |
1515 | if (dpif->dpif_class->disable_upcall) { | |
1516 | dpif->dpif_class->disable_upcall(dpif); | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | void | |
1521 | dpif_print_packet(struct dpif *dpif, struct dpif_upcall *upcall) | |
1522 | { | |
1523 | if (!VLOG_DROP_DBG(&dpmsg_rl)) { | |
1524 | struct ds flow; | |
1525 | char *packet; | |
1526 | ||
2482b0b0 | 1527 | packet = ofp_dp_packet_to_string(&upcall->packet); |
6b31e073 RW |
1528 | |
1529 | ds_init(&flow); | |
1530 | odp_flow_key_format(upcall->key, upcall->key_len, &flow); | |
1531 | ||
1532 | VLOG_DBG("%s: %s upcall:\n%s\n%s", | |
1533 | dpif_name(dpif), dpif_upcall_type_to_string(upcall->type), | |
1534 | ds_cstr(&flow), packet); | |
1535 | ||
1536 | ds_destroy(&flow); | |
1537 | free(packet); | |
1538 | } | |
1539 | } | |
1540 | ||
d4f6865c DDP |
1541 | /* Pass custom configuration to the datapath implementation. Some of the |
1542 | * changes can be postponed until dpif_run() is called. */ | |
f2eee189 | 1543 | int |
d4f6865c | 1544 | dpif_set_config(struct dpif *dpif, const struct smap *cfg) |
f2eee189 AW |
1545 | { |
1546 | int error = 0; | |
1547 | ||
d4f6865c DDP |
1548 | if (dpif->dpif_class->set_config) { |
1549 | error = dpif->dpif_class->set_config(dpif, cfg); | |
f2eee189 | 1550 | if (error) { |
d4f6865c | 1551 | log_operation(dpif, "set_config", error); |
f2eee189 AW |
1552 | } |
1553 | } | |
1554 | ||
1555 | return error; | |
1556 | } | |
1557 | ||
a0439037 KF |
1558 | /* Polls for an upcall from 'dpif' for an upcall handler. Since there can |
1559 | * be multiple poll loops, 'handler_id' is needed as index to identify the | |
1560 | * corresponding poll loop. If successful, stores the upcall into '*upcall', | |
1561 | * using 'buf' for storage. Should only be called if 'recv_set' has been used | |
1562 | * to enable receiving packets from 'dpif'. | |
96fba48f | 1563 | * |
da546e07 JR |
1564 | * 'upcall->key' and 'upcall->userdata' point into data in the caller-provided |
1565 | * 'buf', so their memory cannot be freed separately from 'buf'. | |
856081f6 | 1566 | * |
837a88dc JR |
1567 | * The caller owns the data of 'upcall->packet' and may modify it. If |
1568 | * packet's headroom is exhausted as it is manipulated, 'upcall->packet' | |
1569 | * will be reallocated. This requires the data of 'upcall->packet' to be | |
1570 | * released with ofpbuf_uninit() before 'upcall' is destroyed. However, | |
1571 | * when an error is returned, the 'upcall->packet' may be uninitialized | |
1572 | * and should not be released. | |
1573 | * | |
96fba48f | 1574 | * Returns 0 if successful, otherwise a positive errno value. Returns EAGAIN |
856081f6 | 1575 | * if no upcall is immediately available. */ |
064af421 | 1576 | int |
1954e6bb AW |
1577 | dpif_recv(struct dpif *dpif, uint32_t handler_id, struct dpif_upcall *upcall, |
1578 | struct ofpbuf *buf) | |
064af421 | 1579 | { |
6b31e073 | 1580 | int error = EAGAIN; |
01545c1a | 1581 | |
6b31e073 RW |
1582 | if (dpif->dpif_class->recv) { |
1583 | error = dpif->dpif_class->recv(dpif, handler_id, upcall, buf); | |
1584 | if (!error) { | |
1585 | dpif_print_packet(dpif, upcall); | |
1586 | } else if (error != EAGAIN) { | |
1587 | log_operation(dpif, "recv", error); | |
1588 | } | |
064af421 | 1589 | } |
064af421 BP |
1590 | return error; |
1591 | } | |
1592 | ||
96fba48f | 1593 | /* Discards all messages that would otherwise be received by dpif_recv() on |
1ba530f4 BP |
1594 | * 'dpif'. */ |
1595 | void | |
96fba48f BP |
1596 | dpif_recv_purge(struct dpif *dpif) |
1597 | { | |
96fba48f | 1598 | COVERAGE_INC(dpif_purge); |
1ba530f4 BP |
1599 | if (dpif->dpif_class->recv_purge) { |
1600 | dpif->dpif_class->recv_purge(dpif); | |
96fba48f | 1601 | } |
96fba48f BP |
1602 | } |
1603 | ||
1954e6bb AW |
1604 | /* Arranges for the poll loop for an upcall handler to wake up when 'dpif' |
1605 | * 'dpif' has a message queued to be received with the recv member | |
1606 | * function. Since there can be multiple poll loops, 'handler_id' is | |
1607 | * needed as index to identify the corresponding poll loop. */ | |
064af421 | 1608 | void |
1954e6bb | 1609 | dpif_recv_wait(struct dpif *dpif, uint32_t handler_id) |
064af421 | 1610 | { |
6b31e073 RW |
1611 | if (dpif->dpif_class->recv_wait) { |
1612 | dpif->dpif_class->recv_wait(dpif, handler_id); | |
1613 | } | |
064af421 | 1614 | } |
53a4218d | 1615 | |
b5cbbcf6 AZ |
1616 | /* |
1617 | * Return the datapath version. Caller is responsible for freeing | |
1618 | * the string. | |
1619 | */ | |
1620 | char * | |
1621 | dpif_get_dp_version(const struct dpif *dpif) | |
1622 | { | |
1623 | char *version = NULL; | |
1624 | ||
1625 | if (dpif->dpif_class->get_datapath_version) { | |
1626 | version = dpif->dpif_class->get_datapath_version(); | |
1627 | } | |
1628 | ||
1629 | return version; | |
1630 | } | |
1631 | ||
96fba48f BP |
1632 | /* Obtains the NetFlow engine type and engine ID for 'dpif' into '*engine_type' |
1633 | * and '*engine_id', respectively. */ | |
53a4218d BP |
1634 | void |
1635 | dpif_get_netflow_ids(const struct dpif *dpif, | |
1636 | uint8_t *engine_type, uint8_t *engine_id) | |
1637 | { | |
96fba48f BP |
1638 | *engine_type = dpif->netflow_engine_type; |
1639 | *engine_id = dpif->netflow_engine_id; | |
1640 | } | |
aae51f53 BP |
1641 | |
1642 | /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a priority | |
abff858b PS |
1643 | * value used for setting packet priority. |
1644 | * On success, returns 0 and stores the priority into '*priority'. | |
1645 | * On failure, returns a positive errno value and stores 0 into '*priority'. */ | |
aae51f53 BP |
1646 | int |
1647 | dpif_queue_to_priority(const struct dpif *dpif, uint32_t queue_id, | |
1648 | uint32_t *priority) | |
1649 | { | |
1650 | int error = (dpif->dpif_class->queue_to_priority | |
1651 | ? dpif->dpif_class->queue_to_priority(dpif, queue_id, | |
1652 | priority) | |
1653 | : EOPNOTSUPP); | |
1654 | if (error) { | |
1655 | *priority = 0; | |
1656 | } | |
1657 | log_operation(dpif, "queue_to_priority", error); | |
1658 | return error; | |
1659 | } | |
96fba48f BP |
1660 | \f |
1661 | void | |
1acb6baa BP |
1662 | dpif_init(struct dpif *dpif, const struct dpif_class *dpif_class, |
1663 | const char *name, | |
96fba48f BP |
1664 | uint8_t netflow_engine_type, uint8_t netflow_engine_id) |
1665 | { | |
1acb6baa | 1666 | dpif->dpif_class = dpif_class; |
1a6f1e2a | 1667 | dpif->base_name = xstrdup(name); |
a4af0040 | 1668 | dpif->full_name = xasprintf("%s@%s", dpif_class->type, name); |
96fba48f BP |
1669 | dpif->netflow_engine_type = netflow_engine_type; |
1670 | dpif->netflow_engine_id = netflow_engine_id; | |
1671 | } | |
999401aa JG |
1672 | |
1673 | /* Undoes the results of initialization. | |
1674 | * | |
1675 | * Normally this function only needs to be called from dpif_close(). | |
1676 | * However, it may be called by providers due to an error on opening | |
1677 | * that occurs after initialization. It this case dpif_close() would | |
1678 | * never be called. */ | |
1679 | void | |
1680 | dpif_uninit(struct dpif *dpif, bool close) | |
1681 | { | |
1682 | char *base_name = dpif->base_name; | |
1683 | char *full_name = dpif->full_name; | |
1684 | ||
1685 | if (close) { | |
a4af0040 | 1686 | dpif->dpif_class->close(dpif); |
999401aa JG |
1687 | } |
1688 | ||
1689 | free(base_name); | |
1690 | free(full_name); | |
1691 | } | |
96fba48f BP |
1692 | \f |
1693 | static void | |
1694 | log_operation(const struct dpif *dpif, const char *operation, int error) | |
1695 | { | |
1696 | if (!error) { | |
1697 | VLOG_DBG_RL(&dpmsg_rl, "%s: %s success", dpif_name(dpif), operation); | |
90bf1e07 | 1698 | } else if (ofperr_is_valid(error)) { |
96fba48f | 1699 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
90bf1e07 | 1700 | dpif_name(dpif), operation, ofperr_get_name(error)); |
71ce9235 | 1701 | } else { |
90bf1e07 | 1702 | VLOG_WARN_RL(&error_rl, "%s: %s failed (%s)", |
10a89ef0 | 1703 | dpif_name(dpif), operation, ovs_strerror(error)); |
96fba48f BP |
1704 | } |
1705 | } | |
1706 | ||
1707 | static enum vlog_level | |
1708 | flow_message_log_level(int error) | |
1709 | { | |
9b1a48c2 JP |
1710 | /* If flows arrive in a batch, userspace may push down multiple |
1711 | * unique flow definitions that overlap when wildcards are applied. | |
1712 | * Kernels that support flow wildcarding will reject these flows as | |
1713 | * duplicates (EEXIST), so lower the log level to debug for these | |
1714 | * types of messages. */ | |
1715 | return (error && error != EEXIST) ? VLL_WARN : VLL_DBG; | |
96fba48f BP |
1716 | } |
1717 | ||
1718 | static bool | |
eff1e5b0 | 1719 | should_log_flow_message(const struct vlog_module *module, int error) |
96fba48f | 1720 | { |
eff1e5b0 | 1721 | return !vlog_should_drop(module, flow_message_log_level(error), |
96fba48f BP |
1722 | error ? &error_rl : &dpmsg_rl); |
1723 | } | |
1724 | ||
eff1e5b0 RD |
1725 | void |
1726 | log_flow_message(const struct dpif *dpif, int error, | |
1727 | const struct vlog_module *module, | |
1728 | const char *operation, | |
36956a7d | 1729 | const struct nlattr *key, size_t key_len, |
61fb711d | 1730 | const struct nlattr *mask, size_t mask_len, |
70e5ed6f | 1731 | const ovs_u128 *ufid, const struct dpif_flow_stats *stats, |
cf22f8cb | 1732 | const struct nlattr *actions, size_t actions_len) |
96fba48f BP |
1733 | { |
1734 | struct ds ds = DS_EMPTY_INITIALIZER; | |
1735 | ds_put_format(&ds, "%s: ", dpif_name(dpif)); | |
1736 | if (error) { | |
1737 | ds_put_cstr(&ds, "failed to "); | |
1738 | } | |
1739 | ds_put_format(&ds, "%s ", operation); | |
1740 | if (error) { | |
10a89ef0 | 1741 | ds_put_format(&ds, "(%s) ", ovs_strerror(error)); |
96fba48f | 1742 | } |
70e5ed6f JS |
1743 | if (ufid) { |
1744 | odp_format_ufid(ufid, &ds); | |
1745 | ds_put_cstr(&ds, " "); | |
1746 | } | |
0a37839c | 1747 | odp_flow_format(key, key_len, mask, mask_len, NULL, &ds, true); |
96fba48f BP |
1748 | if (stats) { |
1749 | ds_put_cstr(&ds, ", "); | |
c97fb132 | 1750 | dpif_flow_stats_format(stats, &ds); |
96fba48f | 1751 | } |
cdee00fd | 1752 | if (actions || actions_len) { |
96fba48f | 1753 | ds_put_cstr(&ds, ", actions:"); |
0722f341 | 1754 | format_odp_actions(&ds, actions, actions_len, NULL); |
96fba48f | 1755 | } |
eff1e5b0 | 1756 | vlog(module, flow_message_log_level(error), "%s", ds_cstr(&ds)); |
96fba48f BP |
1757 | ds_destroy(&ds); |
1758 | } | |
89625d1e | 1759 | |
eff1e5b0 RD |
1760 | void |
1761 | log_flow_put_message(const struct dpif *dpif, | |
1762 | const struct vlog_module *module, | |
1763 | const struct dpif_flow_put *put, | |
89625d1e BP |
1764 | int error) |
1765 | { | |
eff1e5b0 RD |
1766 | if (should_log_flow_message(module, error) |
1767 | && !(put->flags & DPIF_FP_PROBE)) { | |
89625d1e BP |
1768 | struct ds s; |
1769 | ||
1770 | ds_init(&s); | |
1771 | ds_put_cstr(&s, "put"); | |
1772 | if (put->flags & DPIF_FP_CREATE) { | |
1773 | ds_put_cstr(&s, "[create]"); | |
1774 | } | |
1775 | if (put->flags & DPIF_FP_MODIFY) { | |
1776 | ds_put_cstr(&s, "[modify]"); | |
1777 | } | |
1778 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
1779 | ds_put_cstr(&s, "[zero]"); | |
1780 | } | |
eff1e5b0 | 1781 | log_flow_message(dpif, error, module, ds_cstr(&s), |
61fb711d | 1782 | put->key, put->key_len, put->mask, put->mask_len, |
70e5ed6f JS |
1783 | put->ufid, put->stats, put->actions, |
1784 | put->actions_len); | |
89625d1e BP |
1785 | ds_destroy(&s); |
1786 | } | |
1787 | } | |
1788 | ||
eff1e5b0 RD |
1789 | void |
1790 | log_flow_del_message(const struct dpif *dpif, | |
1791 | const struct vlog_module *module, | |
1792 | const struct dpif_flow_del *del, | |
b99d3cee BP |
1793 | int error) |
1794 | { | |
eff1e5b0 RD |
1795 | if (should_log_flow_message(module, error)) { |
1796 | log_flow_message(dpif, error, module, "flow_del", | |
1797 | del->key, del->key_len, | |
70e5ed6f JS |
1798 | NULL, 0, del->ufid, !error ? del->stats : NULL, |
1799 | NULL, 0); | |
b99d3cee BP |
1800 | } |
1801 | } | |
1802 | ||
f0fe12fc BP |
1803 | /* Logs that 'execute' was executed on 'dpif' and completed with errno 'error' |
1804 | * (0 for success). 'subexecute' should be true if the execution is a result | |
1805 | * of breaking down a larger execution that needed help, false otherwise. | |
1806 | * | |
1807 | * | |
1808 | * XXX In theory, the log message could be deceptive because this function is | |
1809 | * called after the dpif_provider's '->execute' function, which is allowed to | |
1810 | * modify execute->packet and execute->md. In practice, though: | |
1811 | * | |
93451a0a | 1812 | * - dpif-netlink doesn't modify execute->packet or execute->md. |
f0fe12fc BP |
1813 | * |
1814 | * - dpif-netdev does modify them but it is less likely to have problems | |
1815 | * because it is built into ovs-vswitchd and cannot have version skew, | |
1816 | * etc. | |
1817 | * | |
1818 | * It would still be better to avoid the potential problem. I don't know of a | |
1819 | * good way to do that, though, that isn't expensive. */ | |
eff1e5b0 RD |
1820 | void |
1821 | log_execute_message(const struct dpif *dpif, | |
1822 | const struct vlog_module *module, | |
1823 | const struct dpif_execute *execute, | |
fc65bafc | 1824 | bool subexecute, int error) |
89625d1e | 1825 | { |
43f9ac0a JR |
1826 | if (!(error ? VLOG_DROP_WARN(&error_rl) : VLOG_DROP_DBG(&dpmsg_rl)) |
1827 | && !execute->probe) { | |
89625d1e BP |
1828 | struct ds ds = DS_EMPTY_INITIALIZER; |
1829 | char *packet; | |
b701bce9 JR |
1830 | uint64_t stub[1024 / 8]; |
1831 | struct ofpbuf md = OFPBUF_STUB_INITIALIZER(stub); | |
89625d1e | 1832 | |
cf62fa4c | 1833 | packet = ofp_packet_to_string(dp_packet_data(execute->packet), |
2482b0b0 JS |
1834 | dp_packet_size(execute->packet), |
1835 | execute->packet->packet_type); | |
beb75a40 | 1836 | odp_key_from_dp_packet(&md, execute->packet); |
fc65bafc BP |
1837 | ds_put_format(&ds, "%s: %sexecute ", |
1838 | dpif_name(dpif), | |
1839 | (subexecute ? "sub-" | |
1840 | : dpif_execute_needs_help(execute) ? "super-" | |
1841 | : "")); | |
0722f341 | 1842 | format_odp_actions(&ds, execute->actions, execute->actions_len, NULL); |
89625d1e | 1843 | if (error) { |
10a89ef0 | 1844 | ds_put_format(&ds, " failed (%s)", ovs_strerror(error)); |
89625d1e BP |
1845 | } |
1846 | ds_put_format(&ds, " on packet %s", packet); | |
b701bce9 JR |
1847 | ds_put_format(&ds, " with metadata "); |
1848 | odp_flow_format(md.data, md.size, NULL, 0, NULL, &ds, true); | |
27130224 | 1849 | ds_put_format(&ds, " mtu %d", execute->mtu); |
eff1e5b0 | 1850 | vlog(module, error ? VLL_WARN : VLL_DBG, "%s", ds_cstr(&ds)); |
89625d1e BP |
1851 | ds_destroy(&ds); |
1852 | free(packet); | |
b701bce9 | 1853 | ofpbuf_uninit(&md); |
89625d1e BP |
1854 | } |
1855 | } | |
6fe09f8c | 1856 | |
eff1e5b0 RD |
1857 | void |
1858 | log_flow_get_message(const struct dpif *dpif, | |
1859 | const struct vlog_module *module, | |
1860 | const struct dpif_flow_get *get, | |
6fe09f8c JS |
1861 | int error) |
1862 | { | |
eff1e5b0 RD |
1863 | if (should_log_flow_message(module, error)) { |
1864 | log_flow_message(dpif, error, module, "flow_get", | |
6fe09f8c JS |
1865 | get->key, get->key_len, |
1866 | get->flow->mask, get->flow->mask_len, | |
70e5ed6f | 1867 | get->ufid, &get->flow->stats, |
6fe09f8c JS |
1868 | get->flow->actions, get->flow->actions_len); |
1869 | } | |
1870 | } | |
a36de779 PS |
1871 | |
1872 | bool | |
1873 | dpif_supports_tnl_push_pop(const struct dpif *dpif) | |
1874 | { | |
c4ea7529 | 1875 | return dpif_is_netdev(dpif); |
a36de779 | 1876 | } |
5dddf960 JR |
1877 | |
1878 | /* Meters */ | |
1879 | void | |
1880 | dpif_meter_get_features(const struct dpif *dpif, | |
1881 | struct ofputil_meter_features *features) | |
1882 | { | |
1883 | memset(features, 0, sizeof *features); | |
1884 | if (dpif->dpif_class->meter_get_features) { | |
1885 | dpif->dpif_class->meter_get_features(dpif, features); | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | /* Adds or modifies meter identified by 'meter_id' in 'dpif'. If '*meter_id' | |
1890 | * is UINT32_MAX, adds a new meter, otherwise modifies an existing meter. | |
1891 | * | |
1892 | * If meter is successfully added, sets '*meter_id' to the new meter's | |
1893 | * meter number. */ | |
1894 | int | |
1895 | dpif_meter_set(struct dpif *dpif, ofproto_meter_id *meter_id, | |
1896 | struct ofputil_meter_config *config) | |
1897 | { | |
5dddf960 JR |
1898 | COVERAGE_INC(dpif_meter_set); |
1899 | ||
6508c845 JP |
1900 | if (!(config->flags & (OFPMF13_KBPS | OFPMF13_PKTPS))) { |
1901 | return EBADF; /* Rate unit type not set. */ | |
1902 | } | |
1903 | ||
1904 | if ((config->flags & OFPMF13_KBPS) && (config->flags & OFPMF13_PKTPS)) { | |
1905 | return EBADF; /* Both rate units may not be set. */ | |
1906 | } | |
1907 | ||
1908 | if (config->n_bands == 0) { | |
1909 | return EINVAL; | |
1910 | } | |
1911 | ||
1912 | for (size_t i = 0; i < config->n_bands; i++) { | |
1913 | if (config->bands[i].rate == 0) { | |
1914 | return EDOM; /* Rate must be non-zero */ | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | int error = dpif->dpif_class->meter_set(dpif, meter_id, config); | |
5dddf960 JR |
1919 | if (!error) { |
1920 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" set", | |
1921 | dpif_name(dpif), meter_id->uint32); | |
1922 | } else { | |
1923 | VLOG_WARN_RL(&error_rl, "%s: failed to set DPIF meter %"PRIu32": %s", | |
1924 | dpif_name(dpif), meter_id->uint32, ovs_strerror(error)); | |
1925 | meter_id->uint32 = UINT32_MAX; | |
1926 | } | |
1927 | return error; | |
1928 | } | |
1929 | ||
1930 | int | |
1931 | dpif_meter_get(const struct dpif *dpif, ofproto_meter_id meter_id, | |
1932 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1933 | { | |
1934 | int error; | |
1935 | ||
1936 | COVERAGE_INC(dpif_meter_get); | |
1937 | ||
1938 | error = dpif->dpif_class->meter_get(dpif, meter_id, stats, n_bands); | |
1939 | if (!error) { | |
1940 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" get stats", | |
1941 | dpif_name(dpif), meter_id.uint32); | |
1942 | } else { | |
1943 | VLOG_WARN_RL(&error_rl, | |
1944 | "%s: failed to get DPIF meter %"PRIu32" stats: %s", | |
1945 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1946 | stats->packet_in_count = ~0; | |
1947 | stats->byte_in_count = ~0; | |
1948 | stats->n_bands = 0; | |
1949 | } | |
1950 | return error; | |
1951 | } | |
1952 | ||
1953 | int | |
1954 | dpif_meter_del(struct dpif *dpif, ofproto_meter_id meter_id, | |
1955 | struct ofputil_meter_stats *stats, uint16_t n_bands) | |
1956 | { | |
1957 | int error; | |
1958 | ||
1959 | COVERAGE_INC(dpif_meter_del); | |
1960 | ||
1961 | error = dpif->dpif_class->meter_del(dpif, meter_id, stats, n_bands); | |
1962 | if (!error) { | |
1963 | VLOG_DBG_RL(&dpmsg_rl, "%s: DPIF meter %"PRIu32" deleted", | |
1964 | dpif_name(dpif), meter_id.uint32); | |
1965 | } else { | |
1966 | VLOG_WARN_RL(&error_rl, | |
1967 | "%s: failed to delete DPIF meter %"PRIu32": %s", | |
1968 | dpif_name(dpif), meter_id.uint32, ovs_strerror(error)); | |
1969 | if (stats) { | |
1970 | stats->packet_in_count = ~0; | |
1971 | stats->byte_in_count = ~0; | |
1972 | stats->n_bands = 0; | |
1973 | } | |
1974 | } | |
1975 | return error; | |
1976 | } |