2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include "dpif-provider.h"
27 #include "dynamic-string.h"
31 #include "odp-execute.h"
33 #include "ofp-errors.h"
34 #include "ofp-print.h"
37 #include "packet-dpif.h"
39 #include "poll-loop.h"
47 VLOG_DEFINE_THIS_MODULE(dpif
);
49 COVERAGE_DEFINE(dpif_destroy
);
50 COVERAGE_DEFINE(dpif_port_add
);
51 COVERAGE_DEFINE(dpif_port_del
);
52 COVERAGE_DEFINE(dpif_flow_flush
);
53 COVERAGE_DEFINE(dpif_flow_get
);
54 COVERAGE_DEFINE(dpif_flow_put
);
55 COVERAGE_DEFINE(dpif_flow_del
);
56 COVERAGE_DEFINE(dpif_execute
);
57 COVERAGE_DEFINE(dpif_purge
);
58 COVERAGE_DEFINE(dpif_execute_with_help
);
60 static const struct dpif_class
*base_dpif_classes
[] = {
67 struct registered_dpif_class
{
68 const struct dpif_class
*dpif_class
;
71 static struct shash dpif_classes
= SHASH_INITIALIZER(&dpif_classes
);
72 static struct sset dpif_blacklist
= SSET_INITIALIZER(&dpif_blacklist
);
74 /* Protects 'dpif_classes', including the refcount, and 'dpif_blacklist'. */
75 static struct ovs_mutex dpif_mutex
= OVS_MUTEX_INITIALIZER
;
77 /* Rate limit for individual messages going to or from the datapath, output at
78 * DBG level. This is very high because, if these are enabled, it is because
79 * we really need to see them. */
80 static struct vlog_rate_limit dpmsg_rl
= VLOG_RATE_LIMIT_INIT(600, 600);
82 /* Not really much point in logging many dpif errors. */
83 static struct vlog_rate_limit error_rl
= VLOG_RATE_LIMIT_INIT(60, 5);
85 static void log_flow_message(const struct dpif
*dpif
, int error
,
86 const char *operation
,
87 const struct nlattr
*key
, size_t key_len
,
88 const struct nlattr
*mask
, size_t mask_len
,
89 const struct dpif_flow_stats
*stats
,
90 const struct nlattr
*actions
, size_t actions_len
);
91 static void log_operation(const struct dpif
*, const char *operation
,
93 static bool should_log_flow_message(int error
);
94 static void log_flow_put_message(struct dpif
*, const struct dpif_flow_put
*,
96 static void log_flow_del_message(struct dpif
*, const struct dpif_flow_del
*,
98 static void log_execute_message(struct dpif
*, const struct dpif_execute
*,
104 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
106 if (ovsthread_once_start(&once
)) {
109 for (i
= 0; i
< ARRAY_SIZE(base_dpif_classes
); i
++) {
110 dp_register_provider(base_dpif_classes
[i
]);
112 ovsthread_once_done(&once
);
117 dp_register_provider__(const struct dpif_class
*new_class
)
119 struct registered_dpif_class
*registered_class
;
121 if (sset_contains(&dpif_blacklist
, new_class
->type
)) {
122 VLOG_DBG("attempted to register blacklisted provider: %s",
127 if (shash_find(&dpif_classes
, new_class
->type
)) {
128 VLOG_WARN("attempted to register duplicate datapath provider: %s",
133 registered_class
= xmalloc(sizeof *registered_class
);
134 registered_class
->dpif_class
= new_class
;
135 registered_class
->refcount
= 0;
137 shash_add(&dpif_classes
, new_class
->type
, registered_class
);
142 /* Registers a new datapath provider. After successful registration, new
143 * datapaths of that type can be opened using dpif_open(). */
145 dp_register_provider(const struct dpif_class
*new_class
)
149 ovs_mutex_lock(&dpif_mutex
);
150 error
= dp_register_provider__(new_class
);
151 ovs_mutex_unlock(&dpif_mutex
);
156 /* Unregisters a datapath provider. 'type' must have been previously
157 * registered and not currently be in use by any dpifs. After unregistration
158 * new datapaths of that type cannot be opened using dpif_open(). */
160 dp_unregister_provider__(const char *type
)
162 struct shash_node
*node
;
163 struct registered_dpif_class
*registered_class
;
165 node
= shash_find(&dpif_classes
, type
);
167 VLOG_WARN("attempted to unregister a datapath provider that is not "
168 "registered: %s", type
);
172 registered_class
= node
->data
;
173 if (registered_class
->refcount
) {
174 VLOG_WARN("attempted to unregister in use datapath provider: %s", type
);
178 shash_delete(&dpif_classes
, node
);
179 free(registered_class
);
184 /* Unregisters a datapath provider. 'type' must have been previously
185 * registered and not currently be in use by any dpifs. After unregistration
186 * new datapaths of that type cannot be opened using dpif_open(). */
188 dp_unregister_provider(const char *type
)
194 ovs_mutex_lock(&dpif_mutex
);
195 error
= dp_unregister_provider__(type
);
196 ovs_mutex_unlock(&dpif_mutex
);
201 /* Blacklists a provider. Causes future calls of dp_register_provider() with
202 * a dpif_class which implements 'type' to fail. */
204 dp_blacklist_provider(const char *type
)
206 ovs_mutex_lock(&dpif_mutex
);
207 sset_add(&dpif_blacklist
, type
);
208 ovs_mutex_unlock(&dpif_mutex
);
211 /* Clears 'types' and enumerates the types of all currently registered datapath
212 * providers into it. The caller must first initialize the sset. */
214 dp_enumerate_types(struct sset
*types
)
216 struct shash_node
*node
;
221 ovs_mutex_lock(&dpif_mutex
);
222 SHASH_FOR_EACH(node
, &dpif_classes
) {
223 const struct registered_dpif_class
*registered_class
= node
->data
;
224 sset_add(types
, registered_class
->dpif_class
->type
);
226 ovs_mutex_unlock(&dpif_mutex
);
230 dp_class_unref(struct registered_dpif_class
*rc
)
232 ovs_mutex_lock(&dpif_mutex
);
233 ovs_assert(rc
->refcount
);
235 ovs_mutex_unlock(&dpif_mutex
);
238 static struct registered_dpif_class
*
239 dp_class_lookup(const char *type
)
241 struct registered_dpif_class
*rc
;
243 ovs_mutex_lock(&dpif_mutex
);
244 rc
= shash_find_data(&dpif_classes
, type
);
248 ovs_mutex_unlock(&dpif_mutex
);
253 /* Clears 'names' and enumerates the names of all known created datapaths with
254 * the given 'type'. The caller must first initialize the sset. Returns 0 if
255 * successful, otherwise a positive errno value.
257 * Some kinds of datapaths might not be practically enumerable. This is not
258 * considered an error. */
260 dp_enumerate_names(const char *type
, struct sset
*names
)
262 struct registered_dpif_class
*registered_class
;
263 const struct dpif_class
*dpif_class
;
269 registered_class
= dp_class_lookup(type
);
270 if (!registered_class
) {
271 VLOG_WARN("could not enumerate unknown type: %s", type
);
275 dpif_class
= registered_class
->dpif_class
;
276 error
= (dpif_class
->enumerate
277 ? dpif_class
->enumerate(names
, dpif_class
)
280 VLOG_WARN("failed to enumerate %s datapaths: %s", dpif_class
->type
,
281 ovs_strerror(error
));
283 dp_class_unref(registered_class
);
288 /* Parses 'datapath_name_', which is of the form [type@]name into its
289 * component pieces. 'name' and 'type' must be freed by the caller.
291 * The returned 'type' is normalized, as if by dpif_normalize_type(). */
293 dp_parse_name(const char *datapath_name_
, char **name
, char **type
)
295 char *datapath_name
= xstrdup(datapath_name_
);
298 separator
= strchr(datapath_name
, '@');
301 *type
= datapath_name
;
302 *name
= xstrdup(dpif_normalize_type(separator
+ 1));
304 *name
= datapath_name
;
305 *type
= xstrdup(dpif_normalize_type(NULL
));
310 do_open(const char *name
, const char *type
, bool create
, struct dpif
**dpifp
)
312 struct dpif
*dpif
= NULL
;
314 struct registered_dpif_class
*registered_class
;
318 type
= dpif_normalize_type(type
);
319 registered_class
= dp_class_lookup(type
);
320 if (!registered_class
) {
321 VLOG_WARN("could not create datapath %s of unknown type %s", name
,
323 error
= EAFNOSUPPORT
;
327 error
= registered_class
->dpif_class
->open(registered_class
->dpif_class
,
328 name
, create
, &dpif
);
330 ovs_assert(dpif
->dpif_class
== registered_class
->dpif_class
);
332 dp_class_unref(registered_class
);
336 *dpifp
= error
? NULL
: dpif
;
340 /* Tries to open an existing datapath named 'name' and type 'type'. Will fail
341 * if no datapath with 'name' and 'type' exists. 'type' may be either NULL or
342 * the empty string to specify the default system type. Returns 0 if
343 * successful, otherwise a positive errno value. On success stores a pointer
344 * to the datapath in '*dpifp', otherwise a null pointer. */
346 dpif_open(const char *name
, const char *type
, struct dpif
**dpifp
)
348 return do_open(name
, type
, false, dpifp
);
351 /* Tries to create and open a new datapath with the given 'name' and 'type'.
352 * 'type' may be either NULL or the empty string to specify the default system
353 * type. Will fail if a datapath with 'name' and 'type' already exists.
354 * Returns 0 if successful, otherwise a positive errno value. On success
355 * stores a pointer to the datapath in '*dpifp', otherwise a null pointer. */
357 dpif_create(const char *name
, const char *type
, struct dpif
**dpifp
)
359 return do_open(name
, type
, true, dpifp
);
362 /* Tries to open a datapath with the given 'name' and 'type', creating it if it
363 * does not exist. 'type' may be either NULL or the empty string to specify
364 * the default system type. Returns 0 if successful, otherwise a positive
365 * errno value. On success stores a pointer to the datapath in '*dpifp',
366 * otherwise a null pointer. */
368 dpif_create_and_open(const char *name
, const char *type
, struct dpif
**dpifp
)
372 error
= dpif_create(name
, type
, dpifp
);
373 if (error
== EEXIST
|| error
== EBUSY
) {
374 error
= dpif_open(name
, type
, dpifp
);
376 VLOG_WARN("datapath %s already exists but cannot be opened: %s",
377 name
, ovs_strerror(error
));
380 VLOG_WARN("failed to create datapath %s: %s",
381 name
, ovs_strerror(error
));
386 /* Closes and frees the connection to 'dpif'. Does not destroy the datapath
387 * itself; call dpif_delete() first, instead, if that is desirable. */
389 dpif_close(struct dpif
*dpif
)
392 struct registered_dpif_class
*rc
;
394 rc
= shash_find_data(&dpif_classes
, dpif
->dpif_class
->type
);
395 dpif_uninit(dpif
, true);
400 /* Performs periodic work needed by 'dpif'. */
402 dpif_run(struct dpif
*dpif
)
404 if (dpif
->dpif_class
->run
) {
405 dpif
->dpif_class
->run(dpif
);
409 /* Arranges for poll_block() to wake up when dp_run() needs to be called for
412 dpif_wait(struct dpif
*dpif
)
414 if (dpif
->dpif_class
->wait
) {
415 dpif
->dpif_class
->wait(dpif
);
419 /* Returns the name of datapath 'dpif' prefixed with the type
420 * (for use in log messages). */
422 dpif_name(const struct dpif
*dpif
)
424 return dpif
->full_name
;
427 /* Returns the name of datapath 'dpif' without the type
428 * (for use in device names). */
430 dpif_base_name(const struct dpif
*dpif
)
432 return dpif
->base_name
;
435 /* Returns the type of datapath 'dpif'. */
437 dpif_type(const struct dpif
*dpif
)
439 return dpif
->dpif_class
->type
;
442 /* Returns the fully spelled out name for the given datapath 'type'.
444 * Normalized type string can be compared with strcmp(). Unnormalized type
445 * string might be the same even if they have different spellings. */
447 dpif_normalize_type(const char *type
)
449 return type
&& type
[0] ? type
: "system";
452 /* Destroys the datapath that 'dpif' is connected to, first removing all of its
453 * ports. After calling this function, it does not make sense to pass 'dpif'
454 * to any functions other than dpif_name() or dpif_close(). */
456 dpif_delete(struct dpif
*dpif
)
460 COVERAGE_INC(dpif_destroy
);
462 error
= dpif
->dpif_class
->destroy(dpif
);
463 log_operation(dpif
, "delete", error
);
467 /* Retrieves statistics for 'dpif' into 'stats'. Returns 0 if successful,
468 * otherwise a positive errno value. */
470 dpif_get_dp_stats(const struct dpif
*dpif
, struct dpif_dp_stats
*stats
)
472 int error
= dpif
->dpif_class
->get_stats(dpif
, stats
);
474 memset(stats
, 0, sizeof *stats
);
476 log_operation(dpif
, "get_stats", error
);
481 dpif_port_open_type(const char *datapath_type
, const char *port_type
)
483 struct registered_dpif_class
*rc
;
485 datapath_type
= dpif_normalize_type(datapath_type
);
487 ovs_mutex_lock(&dpif_mutex
);
488 rc
= shash_find_data(&dpif_classes
, datapath_type
);
489 if (rc
&& rc
->dpif_class
->port_open_type
) {
490 port_type
= rc
->dpif_class
->port_open_type(rc
->dpif_class
, port_type
);
492 ovs_mutex_unlock(&dpif_mutex
);
497 /* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is
498 * non-null and its value is not ODPP_NONE, then attempts to use the
499 * value as the port number.
501 * If successful, returns 0 and sets '*port_nop' to the new port's port
502 * number (if 'port_nop' is non-null). On failure, returns a positive
503 * errno value and sets '*port_nop' to ODPP_NONE (if 'port_nop' is
506 dpif_port_add(struct dpif
*dpif
, struct netdev
*netdev
, odp_port_t
*port_nop
)
508 const char *netdev_name
= netdev_get_name(netdev
);
509 odp_port_t port_no
= ODPP_NONE
;
512 COVERAGE_INC(dpif_port_add
);
518 error
= dpif
->dpif_class
->port_add(dpif
, netdev
, &port_no
);
520 VLOG_DBG_RL(&dpmsg_rl
, "%s: added %s as port %"PRIu32
,
521 dpif_name(dpif
), netdev_name
, port_no
);
523 VLOG_WARN_RL(&error_rl
, "%s: failed to add %s as port: %s",
524 dpif_name(dpif
), netdev_name
, ovs_strerror(error
));
533 /* Attempts to remove 'dpif''s port number 'port_no'. Returns 0 if successful,
534 * otherwise a positive errno value. */
536 dpif_port_del(struct dpif
*dpif
, odp_port_t port_no
)
540 COVERAGE_INC(dpif_port_del
);
542 error
= dpif
->dpif_class
->port_del(dpif
, port_no
);
544 VLOG_DBG_RL(&dpmsg_rl
, "%s: port_del(%"PRIu32
")",
545 dpif_name(dpif
), port_no
);
547 log_operation(dpif
, "port_del", error
);
552 /* Makes a deep copy of 'src' into 'dst'. */
554 dpif_port_clone(struct dpif_port
*dst
, const struct dpif_port
*src
)
556 dst
->name
= xstrdup(src
->name
);
557 dst
->type
= xstrdup(src
->type
);
558 dst
->port_no
= src
->port_no
;
561 /* Frees memory allocated to members of 'dpif_port'.
563 * Do not call this function on a dpif_port obtained from
564 * dpif_port_dump_next(): that function retains ownership of the data in the
567 dpif_port_destroy(struct dpif_port
*dpif_port
)
569 free(dpif_port
->name
);
570 free(dpif_port
->type
);
573 /* Checks if port named 'devname' exists in 'dpif'. If so, returns
574 * true; otherwise, returns false. */
576 dpif_port_exists(const struct dpif
*dpif
, const char *devname
)
578 int error
= dpif
->dpif_class
->port_query_by_name(dpif
, devname
, NULL
);
579 if (error
!= 0 && error
!= ENOENT
&& error
!= ENODEV
) {
580 VLOG_WARN_RL(&error_rl
, "%s: failed to query port %s: %s",
581 dpif_name(dpif
), devname
, ovs_strerror(error
));
587 /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and
588 * initializes '*port' appropriately; on failure, returns a positive errno
591 * The caller owns the data in 'port' and must free it with
592 * dpif_port_destroy() when it is no longer needed. */
594 dpif_port_query_by_number(const struct dpif
*dpif
, odp_port_t port_no
,
595 struct dpif_port
*port
)
597 int error
= dpif
->dpif_class
->port_query_by_number(dpif
, port_no
, port
);
599 VLOG_DBG_RL(&dpmsg_rl
, "%s: port %"PRIu32
" is device %s",
600 dpif_name(dpif
), port_no
, port
->name
);
602 memset(port
, 0, sizeof *port
);
603 VLOG_WARN_RL(&error_rl
, "%s: failed to query port %"PRIu32
": %s",
604 dpif_name(dpif
), port_no
, ovs_strerror(error
));
609 /* Looks up port named 'devname' in 'dpif'. On success, returns 0 and
610 * initializes '*port' appropriately; on failure, returns a positive errno
613 * The caller owns the data in 'port' and must free it with
614 * dpif_port_destroy() when it is no longer needed. */
616 dpif_port_query_by_name(const struct dpif
*dpif
, const char *devname
,
617 struct dpif_port
*port
)
619 int error
= dpif
->dpif_class
->port_query_by_name(dpif
, devname
, port
);
621 VLOG_DBG_RL(&dpmsg_rl
, "%s: device %s is on port %"PRIu32
,
622 dpif_name(dpif
), devname
, port
->port_no
);
624 memset(port
, 0, sizeof *port
);
626 /* For ENOENT or ENODEV we use DBG level because the caller is probably
627 * interested in whether 'dpif' actually has a port 'devname', so that
628 * it's not an issue worth logging if it doesn't. Other errors are
629 * uncommon and more likely to indicate a real problem. */
631 error
== ENOENT
|| error
== ENODEV
? VLL_DBG
: VLL_WARN
,
632 "%s: failed to query port %s: %s",
633 dpif_name(dpif
), devname
, ovs_strerror(error
));
638 /* Returns the Netlink PID value to supply in OVS_ACTION_ATTR_USERSPACE
639 * actions as the OVS_USERSPACE_ATTR_PID attribute's value, for use in
640 * flows whose packets arrived on port 'port_no'. In the case where the
641 * provider allocates multiple Netlink PIDs to a single port, it may use
642 * 'hash' to spread load among them. The caller need not use a particular
643 * hash function; a 5-tuple hash is suitable.
645 * (The datapath implementation might use some different hash function for
646 * distributing packets received via flow misses among PIDs. This means
647 * that packets received via flow misses might be reordered relative to
648 * packets received via userspace actions. This is not ordinarily a
651 * A 'port_no' of ODPP_NONE is a special case: it returns a reserved PID, not
652 * allocated to any port, that the client may use for special purposes.
654 * The return value is only meaningful when DPIF_UC_ACTION has been enabled in
655 * the 'dpif''s listen mask. It is allowed to change when DPIF_UC_ACTION is
656 * disabled and then re-enabled, so a client that does that must be prepared to
657 * update all of the flows that it installed that contain
658 * OVS_ACTION_ATTR_USERSPACE actions. */
660 dpif_port_get_pid(const struct dpif
*dpif
, odp_port_t port_no
, uint32_t hash
)
662 return (dpif
->dpif_class
->port_get_pid
663 ? (dpif
->dpif_class
->port_get_pid
)(dpif
, port_no
, hash
)
667 /* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and copies
668 * the port's name into the 'name_size' bytes in 'name', ensuring that the
669 * result is null-terminated. On failure, returns a positive errno value and
670 * makes 'name' the empty string. */
672 dpif_port_get_name(struct dpif
*dpif
, odp_port_t port_no
,
673 char *name
, size_t name_size
)
675 struct dpif_port port
;
678 ovs_assert(name_size
> 0);
680 error
= dpif_port_query_by_number(dpif
, port_no
, &port
);
682 ovs_strlcpy(name
, port
.name
, name_size
);
683 dpif_port_destroy(&port
);
690 /* Initializes 'dump' to begin dumping the ports in a dpif.
692 * This function provides no status indication. An error status for the entire
693 * dump operation is provided when it is completed by calling
694 * dpif_port_dump_done().
697 dpif_port_dump_start(struct dpif_port_dump
*dump
, const struct dpif
*dpif
)
700 dump
->error
= dpif
->dpif_class
->port_dump_start(dpif
, &dump
->state
);
701 log_operation(dpif
, "port_dump_start", dump
->error
);
704 /* Attempts to retrieve another port from 'dump', which must have been
705 * initialized with dpif_port_dump_start(). On success, stores a new dpif_port
706 * into 'port' and returns true. On failure, returns false.
708 * Failure might indicate an actual error or merely that the last port has been
709 * dumped. An error status for the entire dump operation is provided when it
710 * is completed by calling dpif_port_dump_done().
712 * The dpif owns the data stored in 'port'. It will remain valid until at
713 * least the next time 'dump' is passed to dpif_port_dump_next() or
714 * dpif_port_dump_done(). */
716 dpif_port_dump_next(struct dpif_port_dump
*dump
, struct dpif_port
*port
)
718 const struct dpif
*dpif
= dump
->dpif
;
724 dump
->error
= dpif
->dpif_class
->port_dump_next(dpif
, dump
->state
, port
);
725 if (dump
->error
== EOF
) {
726 VLOG_DBG_RL(&dpmsg_rl
, "%s: dumped all ports", dpif_name(dpif
));
728 log_operation(dpif
, "port_dump_next", dump
->error
);
732 dpif
->dpif_class
->port_dump_done(dpif
, dump
->state
);
738 /* Completes port table dump operation 'dump', which must have been initialized
739 * with dpif_port_dump_start(). Returns 0 if the dump operation was
740 * error-free, otherwise a positive errno value describing the problem. */
742 dpif_port_dump_done(struct dpif_port_dump
*dump
)
744 const struct dpif
*dpif
= dump
->dpif
;
746 dump
->error
= dpif
->dpif_class
->port_dump_done(dpif
, dump
->state
);
747 log_operation(dpif
, "port_dump_done", dump
->error
);
749 return dump
->error
== EOF
? 0 : dump
->error
;
752 /* Polls for changes in the set of ports in 'dpif'. If the set of ports in
753 * 'dpif' has changed, this function does one of the following:
755 * - Stores the name of the device that was added to or deleted from 'dpif' in
756 * '*devnamep' and returns 0. The caller is responsible for freeing
757 * '*devnamep' (with free()) when it no longer needs it.
759 * - Returns ENOBUFS and sets '*devnamep' to NULL.
761 * This function may also return 'false positives', where it returns 0 and
762 * '*devnamep' names a device that was not actually added or deleted or it
763 * returns ENOBUFS without any change.
765 * Returns EAGAIN if the set of ports in 'dpif' has not changed. May also
766 * return other positive errno values to indicate that something has gone
769 dpif_port_poll(const struct dpif
*dpif
, char **devnamep
)
771 int error
= dpif
->dpif_class
->port_poll(dpif
, devnamep
);
778 /* Arranges for the poll loop to wake up when port_poll(dpif) will return a
779 * value other than EAGAIN. */
781 dpif_port_poll_wait(const struct dpif
*dpif
)
783 dpif
->dpif_class
->port_poll_wait(dpif
);
786 /* Extracts the flow stats for a packet. The 'flow' and 'packet'
787 * arguments must have been initialized through a call to flow_extract().
788 * 'used' is stored into stats->used. */
790 dpif_flow_stats_extract(const struct flow
*flow
, const struct ofpbuf
*packet
,
791 long long int used
, struct dpif_flow_stats
*stats
)
793 stats
->tcp_flags
= ntohs(flow
->tcp_flags
);
794 stats
->n_bytes
= ofpbuf_size(packet
);
795 stats
->n_packets
= 1;
799 /* Appends a human-readable representation of 'stats' to 's'. */
801 dpif_flow_stats_format(const struct dpif_flow_stats
*stats
, struct ds
*s
)
803 ds_put_format(s
, "packets:%"PRIu64
", bytes:%"PRIu64
", used:",
804 stats
->n_packets
, stats
->n_bytes
);
806 ds_put_format(s
, "%.3fs", (time_msec() - stats
->used
) / 1000.0);
808 ds_put_format(s
, "never");
810 if (stats
->tcp_flags
) {
811 ds_put_cstr(s
, ", flags:");
812 packet_format_tcp_flags(s
, stats
->tcp_flags
);
816 /* Deletes all flows from 'dpif'. Returns 0 if successful, otherwise a
817 * positive errno value. */
819 dpif_flow_flush(struct dpif
*dpif
)
823 COVERAGE_INC(dpif_flow_flush
);
825 error
= dpif
->dpif_class
->flow_flush(dpif
);
826 log_operation(dpif
, "flow_flush", error
);
830 /* Queries 'dpif' for a flow entry. The flow is specified by the Netlink
831 * attributes with types OVS_KEY_ATTR_* in the 'key_len' bytes starting at
834 * Returns 0 if successful. If no flow matches, returns ENOENT. On other
835 * failure, returns a positive errno value.
837 * If 'actionsp' is nonnull, then on success '*actionsp' will be set to an
838 * ofpbuf owned by the caller that contains the Netlink attributes for the
839 * flow's actions. The caller must free the ofpbuf (with ofpbuf_delete()) when
840 * it is no longer needed.
842 * If 'stats' is nonnull, then on success it will be updated with the flow's
845 dpif_flow_get(const struct dpif
*dpif
,
846 const struct nlattr
*key
, size_t key_len
,
847 struct ofpbuf
**actionsp
, struct dpif_flow_stats
*stats
)
851 COVERAGE_INC(dpif_flow_get
);
853 error
= dpif
->dpif_class
->flow_get(dpif
, key
, key_len
, actionsp
, stats
);
859 memset(stats
, 0, sizeof *stats
);
862 if (should_log_flow_message(error
)) {
863 const struct nlattr
*actions
;
866 if (!error
&& actionsp
) {
867 actions
= ofpbuf_data(*actionsp
);
868 actions_len
= ofpbuf_size(*actionsp
);
873 log_flow_message(dpif
, error
, "flow_get", key
, key_len
,
874 NULL
, 0, stats
, actions
, actions_len
);
880 dpif_flow_put__(struct dpif
*dpif
, const struct dpif_flow_put
*put
)
884 COVERAGE_INC(dpif_flow_put
);
885 ovs_assert(!(put
->flags
& ~(DPIF_FP_CREATE
| DPIF_FP_MODIFY
886 | DPIF_FP_ZERO_STATS
)));
888 error
= dpif
->dpif_class
->flow_put(dpif
, put
);
889 if (error
&& put
->stats
) {
890 memset(put
->stats
, 0, sizeof *put
->stats
);
892 log_flow_put_message(dpif
, put
, error
);
896 /* Adds or modifies a flow in 'dpif'. The flow is specified by the Netlink
897 * attribute OVS_FLOW_ATTR_KEY with types OVS_KEY_ATTR_* in the 'key_len' bytes
898 * starting at 'key', and OVS_FLOW_ATTR_MASK with types of OVS_KEY_ATTR_* in
899 * the 'mask_len' bytes starting at 'mask'. The associated actions are
900 * specified by the Netlink attributes with types OVS_ACTION_ATTR_* in the
901 * 'actions_len' bytes starting at 'actions'.
903 * - If the flow's key does not exist in 'dpif', then the flow will be added if
904 * 'flags' includes DPIF_FP_CREATE. Otherwise the operation will fail with
907 * The datapath may reject attempts to insert overlapping flows with EINVAL
908 * or EEXIST, but clients should not rely on this: avoiding overlapping flows
909 * is primarily the client's responsibility.
911 * If the operation succeeds, then 'stats', if nonnull, will be zeroed.
913 * - If the flow's key does exist in 'dpif', then the flow's actions will be
914 * updated if 'flags' includes DPIF_FP_MODIFY. Otherwise the operation will
915 * fail with EEXIST. If the flow's actions are updated, then its statistics
916 * will be zeroed if 'flags' includes DPIF_FP_ZERO_STATS, and left as-is
919 * If the operation succeeds, then 'stats', if nonnull, will be set to the
920 * flow's statistics before the update.
923 dpif_flow_put(struct dpif
*dpif
, enum dpif_flow_put_flags flags
,
924 const struct nlattr
*key
, size_t key_len
,
925 const struct nlattr
*mask
, size_t mask_len
,
926 const struct nlattr
*actions
, size_t actions_len
,
927 struct dpif_flow_stats
*stats
)
929 struct dpif_flow_put put
;
933 put
.key_len
= key_len
;
935 put
.mask_len
= mask_len
;
936 put
.actions
= actions
;
937 put
.actions_len
= actions_len
;
939 return dpif_flow_put__(dpif
, &put
);
943 dpif_flow_del__(struct dpif
*dpif
, struct dpif_flow_del
*del
)
947 COVERAGE_INC(dpif_flow_del
);
949 error
= dpif
->dpif_class
->flow_del(dpif
, del
);
950 if (error
&& del
->stats
) {
951 memset(del
->stats
, 0, sizeof *del
->stats
);
953 log_flow_del_message(dpif
, del
, error
);
957 /* Deletes a flow from 'dpif' and returns 0, or returns ENOENT if 'dpif' does
958 * not contain such a flow. The flow is specified by the Netlink attributes
959 * with types OVS_KEY_ATTR_* in the 'key_len' bytes starting at 'key'.
961 * If the operation succeeds, then 'stats', if nonnull, will be set to the
962 * flow's statistics before its deletion. */
964 dpif_flow_del(struct dpif
*dpif
,
965 const struct nlattr
*key
, size_t key_len
,
966 struct dpif_flow_stats
*stats
)
968 struct dpif_flow_del del
;
971 del
.key_len
= key_len
;
973 return dpif_flow_del__(dpif
, &del
);
976 /* Creates and returns a new 'struct dpif_flow_dump' for iterating through the
979 * This function always successfully returns a dpif_flow_dump. Error
980 * reporting is deferred to dpif_flow_dump_destroy(). */
981 struct dpif_flow_dump
*
982 dpif_flow_dump_create(const struct dpif
*dpif
)
984 return dpif
->dpif_class
->flow_dump_create(dpif
);
987 /* Destroys 'dump', which must have been created with dpif_flow_dump_create().
988 * All dpif_flow_dump_thread structures previously created for 'dump' must
989 * previously have been destroyed.
991 * Returns 0 if the dump operation was error-free, otherwise a positive errno
992 * value describing the problem. */
994 dpif_flow_dump_destroy(struct dpif_flow_dump
*dump
)
996 const struct dpif
*dpif
= dump
->dpif
;
997 int error
= dpif
->dpif_class
->flow_dump_destroy(dump
);
998 log_operation(dpif
, "flow_dump_destroy", error
);
999 return error
== EOF
? 0 : error
;
1002 /* Returns new thread-local state for use with dpif_flow_dump_next(). */
1003 struct dpif_flow_dump_thread
*
1004 dpif_flow_dump_thread_create(struct dpif_flow_dump
*dump
)
1006 return dump
->dpif
->dpif_class
->flow_dump_thread_create(dump
);
1009 /* Releases 'thread'. */
1011 dpif_flow_dump_thread_destroy(struct dpif_flow_dump_thread
*thread
)
1013 thread
->dpif
->dpif_class
->flow_dump_thread_destroy(thread
);
1016 /* Attempts to retrieve up to 'max_flows' more flows from 'thread'. Returns 0
1017 * if and only if no flows remained to be retrieved, otherwise a positive
1018 * number reflecting the number of elements in 'flows[]' that were updated.
1019 * The number of flows returned might be less than 'max_flows' because
1020 * fewer than 'max_flows' remained, because this particular datapath does not
1021 * benefit from batching, or because an error occurred partway through
1022 * retrieval. Thus, the caller should continue calling until a 0 return value,
1023 * even if intermediate return values are less than 'max_flows'.
1025 * No error status is immediately provided. An error status for the entire
1026 * dump operation is provided when it is completed by calling
1027 * dpif_flow_dump_destroy().
1029 * All of the data stored into 'flows' is owned by the datapath, not by the
1030 * caller, and the caller must not modify or free it. The datapath guarantees
1031 * that it remains accessible and unchanged until at least the next call to
1032 * dpif_flow_dump_next() for 'thread'. */
1034 dpif_flow_dump_next(struct dpif_flow_dump_thread
*thread
,
1035 struct dpif_flow
*flows
, int max_flows
)
1037 struct dpif
*dpif
= thread
->dpif
;
1040 ovs_assert(max_flows
> 0);
1041 n
= dpif
->dpif_class
->flow_dump_next(thread
, flows
, max_flows
);
1043 struct dpif_flow
*f
;
1045 for (f
= flows
; f
< &flows
[n
] && should_log_flow_message(0); f
++) {
1046 log_flow_message(dpif
, 0, "flow_dump",
1047 f
->key
, f
->key_len
, f
->mask
, f
->mask_len
,
1048 &f
->stats
, f
->actions
, f
->actions_len
);
1051 VLOG_DBG_RL(&dpmsg_rl
, "%s: dumped all flows", dpif_name(dpif
));
1056 struct dpif_execute_helper_aux
{
1061 /* This is called for actions that need the context of the datapath to be
1064 dpif_execute_helper_cb(void *aux_
, struct dpif_packet
**packets
, int cnt
,
1065 struct pkt_metadata
*md
,
1066 const struct nlattr
*action
, bool may_steal OVS_UNUSED
)
1068 struct dpif_execute_helper_aux
*aux
= aux_
;
1069 int type
= nl_attr_type(action
);
1070 struct ofpbuf
* packet
= &packets
[0]->ofpbuf
;
1072 ovs_assert(cnt
== 1);
1074 switch ((enum ovs_action_attr
)type
) {
1075 case OVS_ACTION_ATTR_OUTPUT
:
1076 case OVS_ACTION_ATTR_USERSPACE
:
1077 case OVS_ACTION_ATTR_RECIRC
: {
1078 struct dpif_execute execute
;
1079 struct ofpbuf execute_actions
;
1080 uint64_t stub
[256 / 8];
1082 if (md
->tunnel
.ip_dst
) {
1083 /* The Linux kernel datapath throws away the tunnel information
1084 * that we supply as metadata. We have to use a "set" action to
1086 ofpbuf_use_stub(&execute_actions
, stub
, sizeof stub
);
1087 odp_put_tunnel_action(&md
->tunnel
, &execute_actions
);
1088 ofpbuf_put(&execute_actions
, action
, NLA_ALIGN(action
->nla_len
));
1090 execute
.actions
= ofpbuf_data(&execute_actions
);
1091 execute
.actions_len
= ofpbuf_size(&execute_actions
);
1093 execute
.actions
= action
;
1094 execute
.actions_len
= NLA_ALIGN(action
->nla_len
);
1097 execute
.packet
= packet
;
1099 execute
.needs_help
= false;
1100 aux
->error
= aux
->dpif
->dpif_class
->execute(aux
->dpif
, &execute
);
1102 if (md
->tunnel
.ip_dst
) {
1103 ofpbuf_uninit(&execute_actions
);
1108 case OVS_ACTION_ATTR_HASH
:
1109 case OVS_ACTION_ATTR_PUSH_VLAN
:
1110 case OVS_ACTION_ATTR_POP_VLAN
:
1111 case OVS_ACTION_ATTR_PUSH_MPLS
:
1112 case OVS_ACTION_ATTR_POP_MPLS
:
1113 case OVS_ACTION_ATTR_SET
:
1114 case OVS_ACTION_ATTR_SAMPLE
:
1115 case OVS_ACTION_ATTR_UNSPEC
:
1116 case __OVS_ACTION_ATTR_MAX
:
1121 /* Executes 'execute' by performing most of the actions in userspace and
1122 * passing the fully constructed packets to 'dpif' for output and userspace
1125 * This helps with actions that a given 'dpif' doesn't implement directly. */
1127 dpif_execute_with_help(struct dpif
*dpif
, struct dpif_execute
*execute
)
1129 struct dpif_execute_helper_aux aux
= {dpif
, 0};
1130 struct dpif_packet packet
, *pp
;
1132 COVERAGE_INC(dpif_execute_with_help
);
1134 packet
.ofpbuf
= *execute
->packet
;
1137 odp_execute_actions(&aux
, &pp
, 1, false, &execute
->md
, execute
->actions
,
1138 execute
->actions_len
, dpif_execute_helper_cb
);
1140 /* Even though may_steal is set to false, some actions could modify or
1141 * reallocate the ofpbuf memory. We need to pass those changes to the
1143 *execute
->packet
= packet
.ofpbuf
;
1148 /* Causes 'dpif' to perform the 'execute->actions_len' bytes of actions in
1149 * 'execute->actions' on the Ethernet frame in 'execute->packet' and on packet
1150 * metadata in 'execute->md'. The implementation is allowed to modify both the
1151 * '*execute->packet' and 'execute->md'.
1153 * Some dpif providers do not implement every action. The Linux kernel
1154 * datapath, in particular, does not implement ARP field modification. If
1155 * 'needs_help' is true, the dpif layer executes in userspace all of the
1156 * actions that it can, and for OVS_ACTION_ATTR_OUTPUT and
1157 * OVS_ACTION_ATTR_USERSPACE actions it passes the packet through to the dpif
1160 * This works even if 'execute->actions_len' is too long for a Netlink
1163 * Returns 0 if successful, otherwise a positive errno value. */
1165 dpif_execute(struct dpif
*dpif
, struct dpif_execute
*execute
)
1169 COVERAGE_INC(dpif_execute
);
1170 if (execute
->actions_len
> 0) {
1171 error
= (execute
->needs_help
|| nl_attr_oversized(execute
->actions_len
)
1172 ? dpif_execute_with_help(dpif
, execute
)
1173 : dpif
->dpif_class
->execute(dpif
, execute
));
1178 log_execute_message(dpif
, execute
, error
);
1183 /* Executes each of the 'n_ops' operations in 'ops' on 'dpif', in the order in
1184 * which they are specified, placing each operation's results in the "output"
1185 * members documented in comments.
1187 * This function exists because some datapaths can perform batched operations
1188 * faster than individual operations. */
1190 dpif_operate(struct dpif
*dpif
, struct dpif_op
**ops
, size_t n_ops
)
1192 if (dpif
->dpif_class
->operate
) {
1196 /* Count 'chunk', the number of ops that can be executed without
1197 * needing any help. Ops that need help should be rare, so we
1198 * expect this to ordinarily be 'n_ops', that is, all the ops. */
1199 for (chunk
= 0; chunk
< n_ops
; chunk
++) {
1200 struct dpif_op
*op
= ops
[chunk
];
1202 if (op
->type
== DPIF_OP_EXECUTE
&& op
->u
.execute
.needs_help
) {
1208 /* Execute a chunk full of ops that the dpif provider can
1209 * handle itself, without help. */
1212 dpif
->dpif_class
->operate(dpif
, ops
, chunk
);
1214 for (i
= 0; i
< chunk
; i
++) {
1215 struct dpif_op
*op
= ops
[i
];
1218 case DPIF_OP_FLOW_PUT
:
1219 log_flow_put_message(dpif
, &op
->u
.flow_put
, op
->error
);
1222 case DPIF_OP_FLOW_DEL
:
1223 log_flow_del_message(dpif
, &op
->u
.flow_del
, op
->error
);
1226 case DPIF_OP_EXECUTE
:
1227 log_execute_message(dpif
, &op
->u
.execute
, op
->error
);
1235 /* Help the dpif provider to execute one op. */
1236 struct dpif_op
*op
= ops
[0];
1238 op
->error
= dpif_execute(dpif
, &op
->u
.execute
);
1246 for (i
= 0; i
< n_ops
; i
++) {
1247 struct dpif_op
*op
= ops
[i
];
1250 case DPIF_OP_FLOW_PUT
:
1251 op
->error
= dpif_flow_put__(dpif
, &op
->u
.flow_put
);
1254 case DPIF_OP_FLOW_DEL
:
1255 op
->error
= dpif_flow_del__(dpif
, &op
->u
.flow_del
);
1258 case DPIF_OP_EXECUTE
:
1259 op
->error
= dpif_execute(dpif
, &op
->u
.execute
);
1269 /* Returns a string that represents 'type', for use in log messages. */
1271 dpif_upcall_type_to_string(enum dpif_upcall_type type
)
1274 case DPIF_UC_MISS
: return "miss";
1275 case DPIF_UC_ACTION
: return "action";
1276 case DPIF_N_UC_TYPES
: default: return "<unknown>";
1280 /* Enables or disables receiving packets with dpif_recv() on 'dpif'. Returns 0
1281 * if successful, otherwise a positive errno value.
1283 * Turning packet receive off and then back on may change the Netlink PID
1284 * assignments returned by dpif_port_get_pid(). If the client does this, it
1285 * must update all of the flows that have OVS_ACTION_ATTR_USERSPACE actions
1286 * using the new PID assignment. */
1288 dpif_recv_set(struct dpif
*dpif
, bool enable
)
1290 int error
= dpif
->dpif_class
->recv_set(dpif
, enable
);
1291 log_operation(dpif
, "recv_set", error
);
1295 /* Refreshes the poll loops and Netlink sockets associated to each port,
1296 * when the number of upcall handlers (upcall receiving thread) is changed
1297 * to 'n_handlers' and receiving packets for 'dpif' is enabled by
1300 * Since multiple upcall handlers can read upcalls simultaneously from
1301 * 'dpif', each port can have multiple Netlink sockets, one per upcall
1302 * handler. So, handlers_set() is responsible for the following tasks:
1304 * When receiving upcall is enabled, extends or creates the
1305 * configuration to support:
1307 * - 'n_handlers' Netlink sockets for each port.
1309 * - 'n_handlers' poll loops, one for each upcall handler.
1311 * - registering the Netlink sockets for the same upcall handler to
1312 * the corresponding poll loop.
1314 * Returns 0 if successful, otherwise a positive errno value. */
1316 dpif_handlers_set(struct dpif
*dpif
, uint32_t n_handlers
)
1318 int error
= dpif
->dpif_class
->handlers_set(dpif
, n_handlers
);
1319 log_operation(dpif
, "handlers_set", error
);
1323 /* Polls for an upcall from 'dpif' for an upcall handler. Since there
1324 * there can be multiple poll loops, 'handler_id' is needed as index to
1325 * identify the corresponding poll loop. If successful, stores the upcall
1326 * into '*upcall', using 'buf' for storage. Should only be called if
1327 * 'recv_set' has been used to enable receiving packets from 'dpif'.
1329 * 'upcall->key' and 'upcall->userdata' point into data in the caller-provided
1330 * 'buf', so their memory cannot be freed separately from 'buf'.
1332 * The caller owns the data of 'upcall->packet' and may modify it. If
1333 * packet's headroom is exhausted as it is manipulated, 'upcall->packet'
1334 * will be reallocated. This requires the data of 'upcall->packet' to be
1335 * released with ofpbuf_uninit() before 'upcall' is destroyed. However,
1336 * when an error is returned, the 'upcall->packet' may be uninitialized
1337 * and should not be released.
1339 * Returns 0 if successful, otherwise a positive errno value. Returns EAGAIN
1340 * if no upcall is immediately available. */
1342 dpif_recv(struct dpif
*dpif
, uint32_t handler_id
, struct dpif_upcall
*upcall
,
1345 int error
= dpif
->dpif_class
->recv(dpif
, handler_id
, upcall
, buf
);
1346 if (!error
&& !VLOG_DROP_DBG(&dpmsg_rl
)) {
1350 packet
= ofp_packet_to_string(ofpbuf_data(&upcall
->packet
),
1351 ofpbuf_size(&upcall
->packet
));
1354 odp_flow_key_format(upcall
->key
, upcall
->key_len
, &flow
);
1356 VLOG_DBG("%s: %s upcall:\n%s\n%s",
1357 dpif_name(dpif
), dpif_upcall_type_to_string(upcall
->type
),
1358 ds_cstr(&flow
), packet
);
1362 } else if (error
&& error
!= EAGAIN
) {
1363 log_operation(dpif
, "recv", error
);
1368 /* Discards all messages that would otherwise be received by dpif_recv() on
1371 dpif_recv_purge(struct dpif
*dpif
)
1373 COVERAGE_INC(dpif_purge
);
1374 if (dpif
->dpif_class
->recv_purge
) {
1375 dpif
->dpif_class
->recv_purge(dpif
);
1379 /* Arranges for the poll loop for an upcall handler to wake up when 'dpif'
1380 * 'dpif' has a message queued to be received with the recv member
1381 * function. Since there can be multiple poll loops, 'handler_id' is
1382 * needed as index to identify the corresponding poll loop. */
1384 dpif_recv_wait(struct dpif
*dpif
, uint32_t handler_id
)
1386 dpif
->dpif_class
->recv_wait(dpif
, handler_id
);
1389 /* Obtains the NetFlow engine type and engine ID for 'dpif' into '*engine_type'
1390 * and '*engine_id', respectively. */
1392 dpif_get_netflow_ids(const struct dpif
*dpif
,
1393 uint8_t *engine_type
, uint8_t *engine_id
)
1395 *engine_type
= dpif
->netflow_engine_type
;
1396 *engine_id
= dpif
->netflow_engine_id
;
1399 /* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a priority
1400 * value used for setting packet priority.
1401 * On success, returns 0 and stores the priority into '*priority'.
1402 * On failure, returns a positive errno value and stores 0 into '*priority'. */
1404 dpif_queue_to_priority(const struct dpif
*dpif
, uint32_t queue_id
,
1407 int error
= (dpif
->dpif_class
->queue_to_priority
1408 ? dpif
->dpif_class
->queue_to_priority(dpif
, queue_id
,
1414 log_operation(dpif
, "queue_to_priority", error
);
1419 dpif_init(struct dpif
*dpif
, const struct dpif_class
*dpif_class
,
1421 uint8_t netflow_engine_type
, uint8_t netflow_engine_id
)
1423 dpif
->dpif_class
= dpif_class
;
1424 dpif
->base_name
= xstrdup(name
);
1425 dpif
->full_name
= xasprintf("%s@%s", dpif_class
->type
, name
);
1426 dpif
->netflow_engine_type
= netflow_engine_type
;
1427 dpif
->netflow_engine_id
= netflow_engine_id
;
1430 /* Undoes the results of initialization.
1432 * Normally this function only needs to be called from dpif_close().
1433 * However, it may be called by providers due to an error on opening
1434 * that occurs after initialization. It this case dpif_close() would
1435 * never be called. */
1437 dpif_uninit(struct dpif
*dpif
, bool close
)
1439 char *base_name
= dpif
->base_name
;
1440 char *full_name
= dpif
->full_name
;
1443 dpif
->dpif_class
->close(dpif
);
1451 log_operation(const struct dpif
*dpif
, const char *operation
, int error
)
1454 VLOG_DBG_RL(&dpmsg_rl
, "%s: %s success", dpif_name(dpif
), operation
);
1455 } else if (ofperr_is_valid(error
)) {
1456 VLOG_WARN_RL(&error_rl
, "%s: %s failed (%s)",
1457 dpif_name(dpif
), operation
, ofperr_get_name(error
));
1459 VLOG_WARN_RL(&error_rl
, "%s: %s failed (%s)",
1460 dpif_name(dpif
), operation
, ovs_strerror(error
));
1464 static enum vlog_level
1465 flow_message_log_level(int error
)
1467 /* If flows arrive in a batch, userspace may push down multiple
1468 * unique flow definitions that overlap when wildcards are applied.
1469 * Kernels that support flow wildcarding will reject these flows as
1470 * duplicates (EEXIST), so lower the log level to debug for these
1471 * types of messages. */
1472 return (error
&& error
!= EEXIST
) ? VLL_WARN
: VLL_DBG
;
1476 should_log_flow_message(int error
)
1478 return !vlog_should_drop(THIS_MODULE
, flow_message_log_level(error
),
1479 error
? &error_rl
: &dpmsg_rl
);
1483 log_flow_message(const struct dpif
*dpif
, int error
, const char *operation
,
1484 const struct nlattr
*key
, size_t key_len
,
1485 const struct nlattr
*mask
, size_t mask_len
,
1486 const struct dpif_flow_stats
*stats
,
1487 const struct nlattr
*actions
, size_t actions_len
)
1489 struct ds ds
= DS_EMPTY_INITIALIZER
;
1490 ds_put_format(&ds
, "%s: ", dpif_name(dpif
));
1492 ds_put_cstr(&ds
, "failed to ");
1494 ds_put_format(&ds
, "%s ", operation
);
1496 ds_put_format(&ds
, "(%s) ", ovs_strerror(error
));
1498 odp_flow_format(key
, key_len
, mask
, mask_len
, NULL
, &ds
, true);
1500 ds_put_cstr(&ds
, ", ");
1501 dpif_flow_stats_format(stats
, &ds
);
1503 if (actions
|| actions_len
) {
1504 ds_put_cstr(&ds
, ", actions:");
1505 format_odp_actions(&ds
, actions
, actions_len
);
1507 vlog(THIS_MODULE
, flow_message_log_level(error
), "%s", ds_cstr(&ds
));
1512 log_flow_put_message(struct dpif
*dpif
, const struct dpif_flow_put
*put
,
1515 if (should_log_flow_message(error
)) {
1519 ds_put_cstr(&s
, "put");
1520 if (put
->flags
& DPIF_FP_CREATE
) {
1521 ds_put_cstr(&s
, "[create]");
1523 if (put
->flags
& DPIF_FP_MODIFY
) {
1524 ds_put_cstr(&s
, "[modify]");
1526 if (put
->flags
& DPIF_FP_ZERO_STATS
) {
1527 ds_put_cstr(&s
, "[zero]");
1529 log_flow_message(dpif
, error
, ds_cstr(&s
),
1530 put
->key
, put
->key_len
, put
->mask
, put
->mask_len
,
1531 put
->stats
, put
->actions
, put
->actions_len
);
1537 log_flow_del_message(struct dpif
*dpif
, const struct dpif_flow_del
*del
,
1540 if (should_log_flow_message(error
)) {
1541 log_flow_message(dpif
, error
, "flow_del", del
->key
, del
->key_len
,
1542 NULL
, 0, !error
? del
->stats
: NULL
, NULL
, 0);
1547 log_execute_message(struct dpif
*dpif
, const struct dpif_execute
*execute
,
1550 if (!(error
? VLOG_DROP_WARN(&error_rl
) : VLOG_DROP_DBG(&dpmsg_rl
))) {
1551 struct ds ds
= DS_EMPTY_INITIALIZER
;
1554 packet
= ofp_packet_to_string(ofpbuf_data(execute
->packet
),
1555 ofpbuf_size(execute
->packet
));
1556 ds_put_format(&ds
, "%s: execute ", dpif_name(dpif
));
1557 format_odp_actions(&ds
, execute
->actions
, execute
->actions_len
);
1559 ds_put_format(&ds
, " failed (%s)", ovs_strerror(error
));
1561 ds_put_format(&ds
, " on packet %s", packet
);
1562 vlog(THIS_MODULE
, error
? VLL_WARN
: VLL_DBG
, "%s", ds_cstr(&ds
));