2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
26 #include "byte-order.h"
27 #include "classifier.h"
28 #include "connectivity.h"
31 #include "dynamic-string.h"
34 #include "meta-flow.h"
37 #include "ofp-actions.h"
38 #include "ofp-errors.h"
40 #include "ofp-print.h"
43 #include "ofproto-provider.h"
44 #include "openflow/nicira-ext.h"
45 #include "openflow/openflow.h"
50 #include "poll-loop.h"
58 #include "unaligned.h"
62 VLOG_DEFINE_THIS_MODULE(ofproto
);
64 COVERAGE_DEFINE(ofproto_flush
);
65 COVERAGE_DEFINE(ofproto_packet_out
);
66 COVERAGE_DEFINE(ofproto_queue_req
);
67 COVERAGE_DEFINE(ofproto_recv_openflow
);
68 COVERAGE_DEFINE(ofproto_reinit_ports
);
69 COVERAGE_DEFINE(ofproto_update_port
);
72 S_OPENFLOW
, /* Processing OpenFlow commands. */
73 S_EVICT
, /* Evicting flows from over-limit tables. */
74 S_FLUSH
, /* Deleting all flow table rules. */
77 enum ofoperation_type
{
84 /* A single OpenFlow request can execute any number of operations. The
85 * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the
86 * ofconn to which an error reply should be sent if necessary.
88 * ofproto initiates some operations internally. These operations are still
89 * assigned to groups but will not have an associated ofconn. */
91 struct ofproto
*ofproto
; /* Owning ofproto. */
92 struct list ofproto_node
; /* In ofproto's "pending" list. */
93 struct list ops
; /* List of "struct ofoperation"s. */
94 int n_running
; /* Number of ops still pending. */
96 /* Data needed to send OpenFlow reply on failure or to send a buffered
99 * If list_is_empty(ofconn_node) then this ofopgroup never had an
100 * associated ofconn or its ofconn's connection dropped after it initiated
101 * the operation. In the latter case 'ofconn' is a wild pointer that
102 * refers to freed memory, so the 'ofconn' member must be used only if
103 * !list_is_empty(ofconn_node).
105 struct list ofconn_node
; /* In ofconn's list of pending opgroups. */
106 struct ofconn
*ofconn
; /* ofconn for reply (but see note above). */
107 struct ofp_header
*request
; /* Original request (truncated at 64 bytes). */
108 uint32_t buffer_id
; /* Buffer id from original request. */
111 static struct ofopgroup
*ofopgroup_create_unattached(struct ofproto
*);
112 static struct ofopgroup
*ofopgroup_create(struct ofproto
*, struct ofconn
*,
113 const struct ofp_header
*,
115 static void ofopgroup_submit(struct ofopgroup
*);
116 static void ofopgroup_complete(struct ofopgroup
*);
118 /* A single flow table operation. */
120 struct ofopgroup
*group
; /* Owning group. */
121 struct list group_node
; /* In ofopgroup's "ops" list. */
122 struct hmap_node hmap_node
; /* In ofproto's "deletions" hmap. */
123 struct rule
*rule
; /* Rule being operated upon. */
124 enum ofoperation_type type
; /* Type of operation. */
126 /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions
128 const struct rule_actions
*actions
;
130 /* OFOPERATION_DELETE. */
131 enum ofp_flow_removed_reason reason
; /* Reason flow was removed. */
133 ovs_be64 flow_cookie
; /* Rule's old flow cookie. */
134 uint16_t idle_timeout
; /* Rule's old idle timeout. */
135 uint16_t hard_timeout
; /* Rule's old hard timeout. */
136 enum ofputil_flow_mod_flags flags
; /* Rule's old flags. */
137 enum ofperr error
; /* 0 if no error. */
140 static struct ofoperation
*ofoperation_create(struct ofopgroup
*,
142 enum ofoperation_type
,
143 enum ofp_flow_removed_reason
);
144 static void ofoperation_destroy(struct ofoperation
*);
147 static void oftable_init(struct oftable
*);
148 static void oftable_destroy(struct oftable
*);
150 static void oftable_set_name(struct oftable
*, const char *name
);
152 static void oftable_disable_eviction(struct oftable
*);
153 static void oftable_enable_eviction(struct oftable
*,
154 const struct mf_subfield
*fields
,
157 static void oftable_remove_rule(struct rule
*rule
) OVS_REQUIRES(ofproto_mutex
);
158 static void oftable_remove_rule__(struct ofproto
*, struct rule
*)
159 OVS_REQUIRES(ofproto_mutex
);
160 static void oftable_insert_rule(struct rule
*);
162 /* A set of rules within a single OpenFlow table (oftable) that have the same
163 * values for the oftable's eviction_fields. A rule to be evicted, when one is
164 * needed, is taken from the eviction group that contains the greatest number
167 * An oftable owns any number of eviction groups, each of which contains any
170 * Membership in an eviction group is imprecise, based on the hash of the
171 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
172 * That is, if two rules have different eviction_fields, but those
173 * eviction_fields hash to the same value, then they will belong to the same
174 * eviction_group anyway.
176 * (When eviction is not enabled on an oftable, we don't track any eviction
177 * groups, to save time and space.) */
178 struct eviction_group
{
179 struct hmap_node id_node
; /* In oftable's "eviction_groups_by_id". */
180 struct heap_node size_node
; /* In oftable's "eviction_groups_by_size". */
181 struct heap rules
; /* Contains "struct rule"s. */
184 static bool choose_rule_to_evict(struct oftable
*table
, struct rule
**rulep
);
185 static void ofproto_evict(struct ofproto
*) OVS_EXCLUDED(ofproto_mutex
);
186 static uint32_t rule_eviction_priority(struct ofproto
*ofproto
, struct rule
*);
187 static void eviction_group_add_rule(struct rule
*);
188 static void eviction_group_remove_rule(struct rule
*);
190 /* Criteria that flow_mod and other operations use for selecting rules on
191 * which to operate. */
192 struct rule_criteria
{
193 /* An OpenFlow table or 255 for all tables. */
196 /* OpenFlow matching criteria. Interpreted different in "loose" way by
197 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
198 * defined in the OpenFlow spec. */
201 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
202 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
203 * The rule will not be selected if M is 1 and B != C. */
205 ovs_be64 cookie_mask
;
207 /* Selection based on actions within a rule:
209 * If out_port != OFPP_ANY, selects only rules that output to out_port.
210 * If out_group != OFPG_ALL, select only rules that output to out_group. */
215 static void rule_criteria_init(struct rule_criteria
*, uint8_t table_id
,
216 const struct match
*match
,
217 unsigned int priority
,
218 ovs_be64 cookie
, ovs_be64 cookie_mask
,
219 ofp_port_t out_port
, uint32_t out_group
);
220 static void rule_criteria_destroy(struct rule_criteria
*);
222 /* A packet that needs to be passed to rule_execute().
224 * (We can't do this immediately from ofopgroup_complete() because that holds
225 * ofproto_mutex, which rule_execute() needs released.) */
226 struct rule_execute
{
227 struct list list_node
; /* In struct ofproto's "rule_executes" list. */
228 struct rule
*rule
; /* Owns a reference to the rule. */
230 struct ofpbuf
*packet
; /* Owns the packet. */
233 static void run_rule_executes(struct ofproto
*) OVS_EXCLUDED(ofproto_mutex
);
234 static void destroy_rule_executes(struct ofproto
*);
237 static void ofport_destroy__(struct ofport
*) OVS_EXCLUDED(ofproto_mutex
);
238 static void ofport_destroy(struct ofport
*);
240 static void update_port(struct ofproto
*, const char *devname
);
241 static int init_ports(struct ofproto
*);
242 static void reinit_ports(struct ofproto
*);
244 static long long int ofport_get_usage(const struct ofproto
*,
245 ofp_port_t ofp_port
);
246 static void ofport_set_usage(struct ofproto
*, ofp_port_t ofp_port
,
247 long long int last_used
);
248 static void ofport_remove_usage(struct ofproto
*, ofp_port_t ofp_port
);
252 * Keeps track of the currently used and recently used ofport values and is
253 * used to prevent immediate recycling of ofport values. */
254 struct ofport_usage
{
255 struct hmap_node hmap_node
; /* In struct ofproto's "ofport_usage" hmap. */
256 ofp_port_t ofp_port
; /* OpenFlow port number. */
257 long long int last_used
; /* Last time the 'ofp_port' was used. LLONG_MAX
258 represents in-use ofports. */
262 static void ofproto_rule_send_removed(struct rule
*, uint8_t reason
);
263 static bool rule_is_modifiable(const struct rule
*rule
,
264 enum ofputil_flow_mod_flags flag
);
267 static enum ofperr
add_flow(struct ofproto
*, struct ofconn
*,
268 struct ofputil_flow_mod
*,
269 const struct ofp_header
*);
270 static void do_add_flow(struct ofproto
*, struct ofconn
*,
271 const struct ofp_header
*request
, uint32_t buffer_id
,
273 static enum ofperr
modify_flows__(struct ofproto
*, struct ofconn
*,
274 struct ofputil_flow_mod
*,
275 const struct ofp_header
*,
276 const struct rule_collection
*);
277 static void delete_flow__(struct rule
*rule
, struct ofopgroup
*,
278 enum ofp_flow_removed_reason
)
279 OVS_REQUIRES(ofproto_mutex
);
280 static bool ofproto_group_exists__(const struct ofproto
*ofproto
,
282 OVS_REQ_RDLOCK(ofproto
->groups_rwlock
);
283 static bool ofproto_group_exists(const struct ofproto
*ofproto
,
285 OVS_EXCLUDED(ofproto
->groups_rwlock
);
286 static enum ofperr
add_group(struct ofproto
*, struct ofputil_group_mod
*);
287 static bool handle_openflow(struct ofconn
*, const struct ofpbuf
*);
288 static enum ofperr
handle_flow_mod__(struct ofproto
*, struct ofconn
*,
289 struct ofputil_flow_mod
*,
290 const struct ofp_header
*)
291 OVS_EXCLUDED(ofproto_mutex
);
292 static void calc_duration(long long int start
, long long int now
,
293 uint32_t *sec
, uint32_t *nsec
);
296 static uint64_t pick_datapath_id(const struct ofproto
*);
297 static uint64_t pick_fallback_dpid(void);
298 static void ofproto_destroy__(struct ofproto
*);
299 static void update_mtu(struct ofproto
*, struct ofport
*);
300 static void meter_delete(struct ofproto
*, uint32_t first
, uint32_t last
);
303 static void ofproto_unixctl_init(void);
305 /* All registered ofproto classes, in probe order. */
306 static const struct ofproto_class
**ofproto_classes
;
307 static size_t n_ofproto_classes
;
308 static size_t allocated_ofproto_classes
;
310 /* Global lock that protects all flow table operations. */
311 struct ovs_mutex ofproto_mutex
= OVS_MUTEX_INITIALIZER
;
313 unsigned ofproto_flow_limit
= OFPROTO_FLOW_LIMIT_DEFAULT
;
314 unsigned ofproto_max_idle
= OFPROTO_MAX_IDLE_DEFAULT
;
316 size_t n_handlers
, n_revalidators
;
318 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
319 static struct hmap all_ofprotos
= HMAP_INITIALIZER(&all_ofprotos
);
321 /* Initial mappings of port to OpenFlow number mappings. */
322 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
324 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
326 /* The default value of true waits for flow restore. */
327 static bool flow_restore_wait
= true;
329 /* Must be called to initialize the ofproto library.
331 * The caller may pass in 'iface_hints', which contains an shash of
332 * "iface_hint" elements indexed by the interface's name. The provider
333 * may use these hints to describe the startup configuration in order to
334 * reinitialize its state. The caller owns the provided data, so a
335 * provider will make copies of anything required. An ofproto provider
336 * will remove any existing state that is not described by the hint, and
337 * may choose to remove it all. */
339 ofproto_init(const struct shash
*iface_hints
)
341 struct shash_node
*node
;
344 ofproto_class_register(&ofproto_dpif_class
);
346 /* Make a local copy, since we don't own 'iface_hints' elements. */
347 SHASH_FOR_EACH(node
, iface_hints
) {
348 const struct iface_hint
*orig_hint
= node
->data
;
349 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
350 const char *br_type
= ofproto_normalize_type(orig_hint
->br_type
);
352 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
353 new_hint
->br_type
= xstrdup(br_type
);
354 new_hint
->ofp_port
= orig_hint
->ofp_port
;
356 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
359 for (i
= 0; i
< n_ofproto_classes
; i
++) {
360 ofproto_classes
[i
]->init(&init_ofp_ports
);
364 /* 'type' should be a normalized datapath type, as returned by
365 * ofproto_normalize_type(). Returns the corresponding ofproto_class
366 * structure, or a null pointer if there is none registered for 'type'. */
367 static const struct ofproto_class
*
368 ofproto_class_find__(const char *type
)
372 for (i
= 0; i
< n_ofproto_classes
; i
++) {
373 const struct ofproto_class
*class = ofproto_classes
[i
];
378 class->enumerate_types(&types
);
379 found
= sset_contains(&types
, type
);
380 sset_destroy(&types
);
386 VLOG_WARN("unknown datapath type %s", type
);
390 /* Registers a new ofproto class. After successful registration, new ofprotos
391 * of that type can be created using ofproto_create(). */
393 ofproto_class_register(const struct ofproto_class
*new_class
)
397 for (i
= 0; i
< n_ofproto_classes
; i
++) {
398 if (ofproto_classes
[i
] == new_class
) {
403 if (n_ofproto_classes
>= allocated_ofproto_classes
) {
404 ofproto_classes
= x2nrealloc(ofproto_classes
,
405 &allocated_ofproto_classes
,
406 sizeof *ofproto_classes
);
408 ofproto_classes
[n_ofproto_classes
++] = new_class
;
412 /* Unregisters a datapath provider. 'type' must have been previously
413 * registered and not currently be in use by any ofprotos. After
414 * unregistration new datapaths of that type cannot be opened using
415 * ofproto_create(). */
417 ofproto_class_unregister(const struct ofproto_class
*class)
421 for (i
= 0; i
< n_ofproto_classes
; i
++) {
422 if (ofproto_classes
[i
] == class) {
423 for (i
++; i
< n_ofproto_classes
; i
++) {
424 ofproto_classes
[i
- 1] = ofproto_classes
[i
];
430 VLOG_WARN("attempted to unregister an ofproto class that is not "
435 /* Clears 'types' and enumerates all registered ofproto types into it. The
436 * caller must first initialize the sset. */
438 ofproto_enumerate_types(struct sset
*types
)
443 for (i
= 0; i
< n_ofproto_classes
; i
++) {
444 ofproto_classes
[i
]->enumerate_types(types
);
448 /* Returns the fully spelled out name for the given ofproto 'type'.
450 * Normalized type string can be compared with strcmp(). Unnormalized type
451 * string might be the same even if they have different spellings. */
453 ofproto_normalize_type(const char *type
)
455 return type
&& type
[0] ? type
: "system";
458 /* Clears 'names' and enumerates the names of all known created ofprotos with
459 * the given 'type'. The caller must first initialize the sset. Returns 0 if
460 * successful, otherwise a positive errno value.
462 * Some kinds of datapaths might not be practically enumerable. This is not
463 * considered an error. */
465 ofproto_enumerate_names(const char *type
, struct sset
*names
)
467 const struct ofproto_class
*class = ofproto_class_find__(type
);
468 return class ? class->enumerate_names(type
, names
) : EAFNOSUPPORT
;
472 ofproto_create(const char *datapath_name
, const char *datapath_type
,
473 struct ofproto
**ofprotop
)
475 const struct ofproto_class
*class;
476 struct ofproto
*ofproto
;
482 ofproto_unixctl_init();
484 datapath_type
= ofproto_normalize_type(datapath_type
);
485 class = ofproto_class_find__(datapath_type
);
487 VLOG_WARN("could not create datapath %s of unknown type %s",
488 datapath_name
, datapath_type
);
492 ofproto
= class->alloc();
494 VLOG_ERR("failed to allocate datapath %s of type %s",
495 datapath_name
, datapath_type
);
500 ovs_mutex_lock(&ofproto_mutex
);
501 memset(ofproto
, 0, sizeof *ofproto
);
502 ofproto
->ofproto_class
= class;
503 ofproto
->name
= xstrdup(datapath_name
);
504 ofproto
->type
= xstrdup(datapath_type
);
505 hmap_insert(&all_ofprotos
, &ofproto
->hmap_node
,
506 hash_string(ofproto
->name
, 0));
507 ofproto
->datapath_id
= 0;
508 ofproto
->forward_bpdu
= false;
509 ofproto
->fallback_dpid
= pick_fallback_dpid();
510 ofproto
->mfr_desc
= NULL
;
511 ofproto
->hw_desc
= NULL
;
512 ofproto
->sw_desc
= NULL
;
513 ofproto
->serial_desc
= NULL
;
514 ofproto
->dp_desc
= NULL
;
515 ofproto
->frag_handling
= OFPC_FRAG_NORMAL
;
516 hmap_init(&ofproto
->ports
);
517 hmap_init(&ofproto
->ofport_usage
);
518 shash_init(&ofproto
->port_by_name
);
519 simap_init(&ofproto
->ofp_requests
);
520 ofproto
->max_ports
= ofp_to_u16(OFPP_MAX
);
521 ofproto
->eviction_group_timer
= LLONG_MIN
;
522 ofproto
->tables
= NULL
;
523 ofproto
->n_tables
= 0;
524 hindex_init(&ofproto
->cookies
);
525 list_init(&ofproto
->expirable
);
526 ofproto
->connmgr
= connmgr_create(ofproto
, datapath_name
, datapath_name
);
527 ofproto
->state
= S_OPENFLOW
;
528 list_init(&ofproto
->pending
);
529 ofproto
->n_pending
= 0;
530 hmap_init(&ofproto
->deletions
);
531 guarded_list_init(&ofproto
->rule_executes
);
532 ofproto
->n_add
= ofproto
->n_delete
= ofproto
->n_modify
= 0;
533 ofproto
->first_op
= ofproto
->last_op
= LLONG_MIN
;
534 ofproto
->next_op_report
= LLONG_MAX
;
535 ofproto
->op_backoff
= LLONG_MIN
;
536 ofproto
->vlan_bitmap
= NULL
;
537 ofproto
->vlans_changed
= false;
538 ofproto
->min_mtu
= INT_MAX
;
539 ovs_rwlock_init(&ofproto
->groups_rwlock
);
540 hmap_init(&ofproto
->groups
);
541 ovs_mutex_unlock(&ofproto_mutex
);
542 ofproto
->ogf
.capabilities
= OFPGFC_CHAINING
| OFPGFC_SELECT_LIVENESS
|
543 OFPGFC_SELECT_WEIGHT
;
544 ofproto
->ogf
.max_groups
[OFPGT11_ALL
] = OFPG_MAX
;
545 ofproto
->ogf
.max_groups
[OFPGT11_SELECT
] = OFPG_MAX
;
546 ofproto
->ogf
.max_groups
[OFPGT11_INDIRECT
] = OFPG_MAX
;
547 ofproto
->ogf
.max_groups
[OFPGT11_FF
] = OFPG_MAX
;
548 ofproto
->ogf
.actions
[0] =
549 (1 << OFPAT11_OUTPUT
) |
550 (1 << OFPAT11_COPY_TTL_OUT
) |
551 (1 << OFPAT11_COPY_TTL_IN
) |
552 (1 << OFPAT11_SET_MPLS_TTL
) |
553 (1 << OFPAT11_DEC_MPLS_TTL
) |
554 (1 << OFPAT11_PUSH_VLAN
) |
555 (1 << OFPAT11_POP_VLAN
) |
556 (1 << OFPAT11_PUSH_MPLS
) |
557 (1 << OFPAT11_POP_MPLS
) |
558 (1 << OFPAT11_SET_QUEUE
) |
559 (1 << OFPAT11_GROUP
) |
560 (1 << OFPAT11_SET_NW_TTL
) |
561 (1 << OFPAT11_DEC_NW_TTL
) |
562 (1 << OFPAT12_SET_FIELD
);
564 * (1 << OFPAT13_PUSH_PBB) |
565 * (1 << OFPAT13_POP_PBB) */
567 error
= ofproto
->ofproto_class
->construct(ofproto
);
569 VLOG_ERR("failed to open datapath %s: %s",
570 datapath_name
, ovs_strerror(error
));
571 ofproto_destroy__(ofproto
);
575 /* Check that hidden tables, if any, are at the end. */
576 ovs_assert(ofproto
->n_tables
);
577 for (i
= 0; i
+ 1 < ofproto
->n_tables
; i
++) {
578 enum oftable_flags flags
= ofproto
->tables
[i
].flags
;
579 enum oftable_flags next_flags
= ofproto
->tables
[i
+ 1].flags
;
581 ovs_assert(!(flags
& OFTABLE_HIDDEN
) || next_flags
& OFTABLE_HIDDEN
);
584 ofproto
->datapath_id
= pick_datapath_id(ofproto
);
587 /* Initialize meters table. */
588 if (ofproto
->ofproto_class
->meter_get_features
) {
589 ofproto
->ofproto_class
->meter_get_features(ofproto
,
590 &ofproto
->meter_features
);
592 memset(&ofproto
->meter_features
, 0, sizeof ofproto
->meter_features
);
594 ofproto
->meters
= xzalloc((ofproto
->meter_features
.max_meters
+ 1)
595 * sizeof(struct meter
*));
601 /* Must be called (only) by an ofproto implementation in its constructor
602 * function. See the large comment on 'construct' in struct ofproto_class for
605 ofproto_init_tables(struct ofproto
*ofproto
, int n_tables
)
607 struct oftable
*table
;
609 ovs_assert(!ofproto
->n_tables
);
610 ovs_assert(n_tables
>= 1 && n_tables
<= 255);
612 ofproto
->n_tables
= n_tables
;
613 ofproto
->tables
= xmalloc(n_tables
* sizeof *ofproto
->tables
);
614 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
619 /* To be optionally called (only) by an ofproto implementation in its
620 * constructor function. See the large comment on 'construct' in struct
621 * ofproto_class for details.
623 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
624 * will then ensure that actions passed into the ofproto implementation will
625 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
626 * function is not called, there will be no such restriction.
628 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
629 * the 'max_ports' restriction. */
631 ofproto_init_max_ports(struct ofproto
*ofproto
, uint16_t max_ports
)
633 ovs_assert(max_ports
<= ofp_to_u16(OFPP_MAX
));
634 ofproto
->max_ports
= max_ports
;
638 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
640 return ofproto
->datapath_id
;
644 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
646 uint64_t old_dpid
= p
->datapath_id
;
647 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
648 if (p
->datapath_id
!= old_dpid
) {
649 /* Force all active connections to reconnect, since there is no way to
650 * notify a controller that the datapath ID has changed. */
651 ofproto_reconnect_controllers(p
);
656 ofproto_set_controllers(struct ofproto
*p
,
657 const struct ofproto_controller
*controllers
,
658 size_t n_controllers
, uint32_t allowed_versions
)
660 connmgr_set_controllers(p
->connmgr
, controllers
, n_controllers
,
665 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
667 connmgr_set_fail_mode(p
->connmgr
, fail_mode
);
670 /* Drops the connections between 'ofproto' and all of its controllers, forcing
671 * them to reconnect. */
673 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
675 connmgr_reconnect(ofproto
->connmgr
);
678 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
679 * in-band control should guarantee access, in the same way that in-band
680 * control guarantees access to OpenFlow controllers. */
682 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
683 const struct sockaddr_in
*extras
, size_t n
)
685 connmgr_set_extra_in_band_remotes(ofproto
->connmgr
, extras
, n
);
688 /* Sets the OpenFlow queue used by flows set up by in-band control on
689 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
690 * flows will use the default queue. */
692 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
694 connmgr_set_in_band_queue(ofproto
->connmgr
, queue_id
);
697 /* Sets the number of flows at which eviction from the kernel flow table
700 ofproto_set_flow_limit(unsigned limit
)
702 ofproto_flow_limit
= limit
;
705 /* Sets the maximum idle time for flows in the datapath before they are
708 ofproto_set_max_idle(unsigned max_idle
)
710 ofproto_max_idle
= max_idle
;
713 /* If forward_bpdu is true, the NORMAL action will forward frames with
714 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
715 * the NORMAL action will drop these frames. */
717 ofproto_set_forward_bpdu(struct ofproto
*ofproto
, bool forward_bpdu
)
719 bool old_val
= ofproto
->forward_bpdu
;
720 ofproto
->forward_bpdu
= forward_bpdu
;
721 if (old_val
!= ofproto
->forward_bpdu
) {
722 if (ofproto
->ofproto_class
->forward_bpdu_changed
) {
723 ofproto
->ofproto_class
->forward_bpdu_changed(ofproto
);
728 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
729 * 'idle_time', in seconds, and the maximum number of MAC table entries to
732 ofproto_set_mac_table_config(struct ofproto
*ofproto
, unsigned idle_time
,
735 if (ofproto
->ofproto_class
->set_mac_table_config
) {
736 ofproto
->ofproto_class
->set_mac_table_config(ofproto
, idle_time
,
742 ofproto_set_threads(int n_handlers_
, int n_revalidators_
)
744 int threads
= MAX(count_cpu_cores(), 2);
746 n_revalidators
= MAX(n_revalidators_
, 0);
747 n_handlers
= MAX(n_handlers_
, 0);
749 if (!n_revalidators
) {
750 n_revalidators
= n_handlers
751 ? MAX(threads
- (int) n_handlers
, 1)
756 n_handlers
= MAX(threads
- (int) n_revalidators
, 1);
761 ofproto_set_dp_desc(struct ofproto
*p
, const char *dp_desc
)
764 p
->dp_desc
= dp_desc
? xstrdup(dp_desc
) : NULL
;
768 ofproto_set_snoops(struct ofproto
*ofproto
, const struct sset
*snoops
)
770 return connmgr_set_snoops(ofproto
->connmgr
, snoops
);
774 ofproto_set_netflow(struct ofproto
*ofproto
,
775 const struct netflow_options
*nf_options
)
777 if (nf_options
&& sset_is_empty(&nf_options
->collectors
)) {
781 if (ofproto
->ofproto_class
->set_netflow
) {
782 return ofproto
->ofproto_class
->set_netflow(ofproto
, nf_options
);
784 return nf_options
? EOPNOTSUPP
: 0;
789 ofproto_set_sflow(struct ofproto
*ofproto
,
790 const struct ofproto_sflow_options
*oso
)
792 if (oso
&& sset_is_empty(&oso
->targets
)) {
796 if (ofproto
->ofproto_class
->set_sflow
) {
797 return ofproto
->ofproto_class
->set_sflow(ofproto
, oso
);
799 return oso
? EOPNOTSUPP
: 0;
804 ofproto_set_ipfix(struct ofproto
*ofproto
,
805 const struct ofproto_ipfix_bridge_exporter_options
*bo
,
806 const struct ofproto_ipfix_flow_exporter_options
*fo
,
809 if (ofproto
->ofproto_class
->set_ipfix
) {
810 return ofproto
->ofproto_class
->set_ipfix(ofproto
, bo
, fo
, n_fo
);
812 return (bo
|| fo
) ? EOPNOTSUPP
: 0;
817 ofproto_set_flow_restore_wait(bool flow_restore_wait_db
)
819 flow_restore_wait
= flow_restore_wait_db
;
823 ofproto_get_flow_restore_wait(void)
825 return flow_restore_wait
;
829 /* Spanning Tree Protocol (STP) configuration. */
831 /* Configures STP on 'ofproto' using the settings defined in 's'. If
832 * 's' is NULL, disables STP.
834 * Returns 0 if successful, otherwise a positive errno value. */
836 ofproto_set_stp(struct ofproto
*ofproto
,
837 const struct ofproto_stp_settings
*s
)
839 return (ofproto
->ofproto_class
->set_stp
840 ? ofproto
->ofproto_class
->set_stp(ofproto
, s
)
844 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
845 * 'enabled' member of 's' is false, then the other members are not
848 * Returns 0 if successful, otherwise a positive errno value. */
850 ofproto_get_stp_status(struct ofproto
*ofproto
,
851 struct ofproto_stp_status
*s
)
853 return (ofproto
->ofproto_class
->get_stp_status
854 ? ofproto
->ofproto_class
->get_stp_status(ofproto
, s
)
858 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
859 * in 's'. The caller is responsible for assigning STP port numbers
860 * (using the 'port_num' member in the range of 1 through 255, inclusive)
861 * and ensuring there are no duplicates. If the 's' is NULL, then STP
862 * is disabled on the port.
864 * Returns 0 if successful, otherwise a positive errno value.*/
866 ofproto_port_set_stp(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
867 const struct ofproto_port_stp_settings
*s
)
869 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
871 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16
,
872 ofproto
->name
, ofp_port
);
876 return (ofproto
->ofproto_class
->set_stp_port
877 ? ofproto
->ofproto_class
->set_stp_port(ofport
, s
)
881 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
882 * 's'. If the 'enabled' member in 's' is false, then the other members
883 * are not meaningful.
885 * Returns 0 if successful, otherwise a positive errno value.*/
887 ofproto_port_get_stp_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
888 struct ofproto_port_stp_status
*s
)
890 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
892 VLOG_WARN_RL(&rl
, "%s: cannot get STP status on nonexistent "
893 "port %"PRIu16
, ofproto
->name
, ofp_port
);
897 return (ofproto
->ofproto_class
->get_stp_port_status
898 ? ofproto
->ofproto_class
->get_stp_port_status(ofport
, s
)
902 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
903 * 's'. If the 'enabled' member in 's' is false, then the other members
904 * are not meaningful.
906 * Returns 0 if successful, otherwise a positive errno value.*/
908 ofproto_port_get_stp_stats(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
909 struct ofproto_port_stp_stats
*s
)
911 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
913 VLOG_WARN_RL(&rl
, "%s: cannot get STP stats on nonexistent "
914 "port %"PRIu16
, ofproto
->name
, ofp_port
);
918 return (ofproto
->ofproto_class
->get_stp_port_stats
919 ? ofproto
->ofproto_class
->get_stp_port_stats(ofport
, s
)
923 /* Queue DSCP configuration. */
925 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
926 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
927 * to implement QoS. Instead, it is used to implement features which require
928 * knowledge of what queues exist on a port, and some basic information about
931 * Returns 0 if successful, otherwise a positive errno value. */
933 ofproto_port_set_queues(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
934 const struct ofproto_port_queue
*queues
,
937 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
940 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16
,
941 ofproto
->name
, ofp_port
);
945 return (ofproto
->ofproto_class
->set_queues
946 ? ofproto
->ofproto_class
->set_queues(ofport
, queues
, n_queues
)
950 /* Connectivity Fault Management configuration. */
952 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
954 ofproto_port_clear_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
956 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
957 if (ofport
&& ofproto
->ofproto_class
->set_cfm
) {
958 ofproto
->ofproto_class
->set_cfm(ofport
, NULL
);
962 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
963 * basic configuration from the configuration members in 'cfm', and the remote
964 * maintenance point ID from remote_mpid. Ignores the statistics members of
967 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
969 ofproto_port_set_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
970 const struct cfm_settings
*s
)
972 struct ofport
*ofport
;
975 ofport
= ofproto_get_port(ofproto
, ofp_port
);
977 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16
,
978 ofproto
->name
, ofp_port
);
982 /* XXX: For configuration simplicity, we only support one remote_mpid
983 * outside of the CFM module. It's not clear if this is the correct long
984 * term solution or not. */
985 error
= (ofproto
->ofproto_class
->set_cfm
986 ? ofproto
->ofproto_class
->set_cfm(ofport
, s
)
989 VLOG_WARN("%s: CFM configuration on port %"PRIu16
" (%s) failed (%s)",
990 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
991 ovs_strerror(error
));
995 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
996 * 'ofproto' does not have a port 'ofp_port'. */
998 ofproto_port_set_bfd(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
999 const struct smap
*cfg
)
1001 struct ofport
*ofport
;
1004 ofport
= ofproto_get_port(ofproto
, ofp_port
);
1006 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16
,
1007 ofproto
->name
, ofp_port
);
1011 error
= (ofproto
->ofproto_class
->set_bfd
1012 ? ofproto
->ofproto_class
->set_bfd(ofport
, cfg
)
1015 VLOG_WARN("%s: bfd configuration on port %"PRIu16
" (%s) failed (%s)",
1016 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
1017 ovs_strerror(error
));
1021 /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
1022 * success. Returns a negative number if there is no status change since
1023 * last update. Returns a positive errno otherwise. Has no effect if
1024 * 'ofp_port' is not an OpenFlow port in 'ofproto'.
1026 * The caller must provide and own '*status'. */
1028 ofproto_port_get_bfd_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
1029 struct smap
*status
)
1031 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1032 return (ofport
&& ofproto
->ofproto_class
->get_bfd_status
1033 ? ofproto
->ofproto_class
->get_bfd_status(ofport
, status
)
1037 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1038 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1039 * 0 if LACP partner information is not current (generally indicating a
1040 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1042 ofproto_port_is_lacp_current(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1044 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1045 return (ofport
&& ofproto
->ofproto_class
->port_is_lacp_current
1046 ? ofproto
->ofproto_class
->port_is_lacp_current(ofport
)
1052 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1053 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1054 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1055 * configuration plus, if there is more than one slave, a bonding
1058 * If 'aux' is already registered then this function updates its configuration
1059 * to 's'. Otherwise, this function registers a new bundle.
1061 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1064 ofproto_bundle_register(struct ofproto
*ofproto
, void *aux
,
1065 const struct ofproto_bundle_settings
*s
)
1067 return (ofproto
->ofproto_class
->bundle_set
1068 ? ofproto
->ofproto_class
->bundle_set(ofproto
, aux
, s
)
1072 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1073 * If no such bundle has been registered, this has no effect. */
1075 ofproto_bundle_unregister(struct ofproto
*ofproto
, void *aux
)
1077 return ofproto_bundle_register(ofproto
, aux
, NULL
);
1081 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1082 * If 'aux' is already registered then this function updates its configuration
1083 * to 's'. Otherwise, this function registers a new mirror. */
1085 ofproto_mirror_register(struct ofproto
*ofproto
, void *aux
,
1086 const struct ofproto_mirror_settings
*s
)
1088 return (ofproto
->ofproto_class
->mirror_set
1089 ? ofproto
->ofproto_class
->mirror_set(ofproto
, aux
, s
)
1093 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1094 * If no mirror has been registered, this has no effect. */
1096 ofproto_mirror_unregister(struct ofproto
*ofproto
, void *aux
)
1098 return ofproto_mirror_register(ofproto
, aux
, NULL
);
1101 /* Retrieves statistics from mirror associated with client data pointer
1102 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1103 * 'bytes', respectively. If a particular counters is not supported,
1104 * the appropriate argument is set to UINT64_MAX. */
1106 ofproto_mirror_get_stats(struct ofproto
*ofproto
, void *aux
,
1107 uint64_t *packets
, uint64_t *bytes
)
1109 if (!ofproto
->ofproto_class
->mirror_get_stats
) {
1110 *packets
= *bytes
= UINT64_MAX
;
1114 return ofproto
->ofproto_class
->mirror_get_stats(ofproto
, aux
,
1118 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1119 * which all packets are flooded, instead of using MAC learning. If
1120 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1122 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1125 ofproto_set_flood_vlans(struct ofproto
*ofproto
, unsigned long *flood_vlans
)
1127 return (ofproto
->ofproto_class
->set_flood_vlans
1128 ? ofproto
->ofproto_class
->set_flood_vlans(ofproto
, flood_vlans
)
1132 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1133 * output for a mirror. */
1135 ofproto_is_mirror_output_bundle(const struct ofproto
*ofproto
, void *aux
)
1137 return (ofproto
->ofproto_class
->is_mirror_output_bundle
1138 ? ofproto
->ofproto_class
->is_mirror_output_bundle(ofproto
, aux
)
1142 /* Configuration of OpenFlow tables. */
1144 /* Returns the number of OpenFlow tables in 'ofproto'. */
1146 ofproto_get_n_tables(const struct ofproto
*ofproto
)
1148 return ofproto
->n_tables
;
1151 /* Returns the number of Controller visible OpenFlow tables
1152 * in 'ofproto'. This number will exclude Hidden tables.
1153 * This funtion's return value should be less or equal to that of
1154 * ofproto_get_n_tables() . */
1156 ofproto_get_n_visible_tables(const struct ofproto
*ofproto
)
1158 uint8_t n
= ofproto
->n_tables
;
1160 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1161 * if present, are always at the end.) */
1162 while(n
&& (ofproto
->tables
[n
- 1].flags
& OFTABLE_HIDDEN
)) {
1169 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1170 * settings from 's'. 'table_id' must be in the range 0 through the number of
1171 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1173 * For read-only tables, only the name may be configured. */
1175 ofproto_configure_table(struct ofproto
*ofproto
, int table_id
,
1176 const struct ofproto_table_settings
*s
)
1178 struct oftable
*table
;
1180 ovs_assert(table_id
>= 0 && table_id
< ofproto
->n_tables
);
1181 table
= &ofproto
->tables
[table_id
];
1183 oftable_set_name(table
, s
->name
);
1185 if (table
->flags
& OFTABLE_READONLY
) {
1190 oftable_enable_eviction(table
, s
->groups
, s
->n_groups
);
1192 oftable_disable_eviction(table
);
1195 table
->max_flows
= s
->max_flows
;
1196 fat_rwlock_wrlock(&table
->cls
.rwlock
);
1197 if (classifier_count(&table
->cls
) > table
->max_flows
1198 && table
->eviction_fields
) {
1199 /* 'table' contains more flows than allowed. We might not be able to
1200 * evict them right away because of the asynchronous nature of flow
1201 * table changes. Schedule eviction for later. */
1202 switch (ofproto
->state
) {
1204 ofproto
->state
= S_EVICT
;
1208 /* We're already deleting flows, nothing more to do. */
1213 classifier_set_prefix_fields(&table
->cls
,
1214 s
->prefix_fields
, s
->n_prefix_fields
);
1216 fat_rwlock_unlock(&table
->cls
.rwlock
);
1220 ofproto_has_snoops(const struct ofproto
*ofproto
)
1222 return connmgr_has_snoops(ofproto
->connmgr
);
1226 ofproto_get_snoops(const struct ofproto
*ofproto
, struct sset
*snoops
)
1228 connmgr_get_snoops(ofproto
->connmgr
, snoops
);
1232 ofproto_rule_delete__(struct ofproto
*ofproto
, struct rule
*rule
,
1234 OVS_REQUIRES(ofproto_mutex
)
1236 struct ofopgroup
*group
;
1238 ovs_assert(!rule
->pending
);
1240 group
= ofopgroup_create_unattached(ofproto
);
1241 delete_flow__(rule
, group
, reason
);
1242 ofopgroup_submit(group
);
1245 /* Deletes 'rule' from 'ofproto'.
1247 * Within an ofproto implementation, this function allows an ofproto
1248 * implementation to destroy any rules that remain when its ->destruct()
1249 * function is called. This function is not suitable for use elsewhere in an
1250 * ofproto implementation.
1252 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1253 * Cycle" in ofproto-provider.h. */
1255 ofproto_rule_delete(struct ofproto
*ofproto
, struct rule
*rule
)
1256 OVS_EXCLUDED(ofproto_mutex
)
1258 struct ofopgroup
*group
;
1260 ovs_mutex_lock(&ofproto_mutex
);
1261 ovs_assert(!rule
->pending
);
1263 group
= ofopgroup_create_unattached(ofproto
);
1264 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, OFPRR_DELETE
);
1265 oftable_remove_rule__(ofproto
, rule
);
1266 ofproto
->ofproto_class
->rule_delete(rule
);
1267 ofopgroup_submit(group
);
1269 ovs_mutex_unlock(&ofproto_mutex
);
1273 ofproto_flush__(struct ofproto
*ofproto
)
1274 OVS_EXCLUDED(ofproto_mutex
)
1276 struct oftable
*table
;
1278 if (ofproto
->ofproto_class
->flush
) {
1279 ofproto
->ofproto_class
->flush(ofproto
);
1282 ovs_mutex_lock(&ofproto_mutex
);
1283 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1284 struct rule
*rule
, *next_rule
;
1285 struct cls_cursor cursor
;
1287 if (table
->flags
& OFTABLE_HIDDEN
) {
1291 fat_rwlock_rdlock(&table
->cls
.rwlock
);
1292 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1293 fat_rwlock_unlock(&table
->cls
.rwlock
);
1294 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1295 if (!rule
->pending
) {
1296 ofproto_rule_delete__(ofproto
, rule
, OFPRR_DELETE
);
1300 ovs_mutex_unlock(&ofproto_mutex
);
1303 static void delete_group(struct ofproto
*ofproto
, uint32_t group_id
);
1306 ofproto_destroy__(struct ofproto
*ofproto
)
1307 OVS_EXCLUDED(ofproto_mutex
)
1309 struct oftable
*table
;
1311 ovs_assert(list_is_empty(&ofproto
->pending
));
1313 destroy_rule_executes(ofproto
);
1314 delete_group(ofproto
, OFPG_ALL
);
1316 guarded_list_destroy(&ofproto
->rule_executes
);
1317 ovs_rwlock_destroy(&ofproto
->groups_rwlock
);
1318 hmap_destroy(&ofproto
->groups
);
1320 connmgr_destroy(ofproto
->connmgr
);
1322 hmap_remove(&all_ofprotos
, &ofproto
->hmap_node
);
1323 free(ofproto
->name
);
1324 free(ofproto
->type
);
1325 free(ofproto
->mfr_desc
);
1326 free(ofproto
->hw_desc
);
1327 free(ofproto
->sw_desc
);
1328 free(ofproto
->serial_desc
);
1329 free(ofproto
->dp_desc
);
1330 hmap_destroy(&ofproto
->ports
);
1331 hmap_destroy(&ofproto
->ofport_usage
);
1332 shash_destroy(&ofproto
->port_by_name
);
1333 simap_destroy(&ofproto
->ofp_requests
);
1335 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1336 oftable_destroy(table
);
1338 free(ofproto
->tables
);
1340 hmap_destroy(&ofproto
->deletions
);
1342 free(ofproto
->vlan_bitmap
);
1344 ofproto
->ofproto_class
->dealloc(ofproto
);
1348 ofproto_destroy(struct ofproto
*p
)
1349 OVS_EXCLUDED(ofproto_mutex
)
1351 struct ofport
*ofport
, *next_ofport
;
1352 struct ofport_usage
*usage
, *next_usage
;
1359 meter_delete(p
, 1, p
->meter_features
.max_meters
);
1360 p
->meter_features
.max_meters
= 0;
1366 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1367 ofport_destroy(ofport
);
1370 HMAP_FOR_EACH_SAFE (usage
, next_usage
, hmap_node
, &p
->ofport_usage
) {
1371 hmap_remove(&p
->ofport_usage
, &usage
->hmap_node
);
1375 p
->ofproto_class
->destruct(p
);
1376 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1377 ovsrcu_postpone(ofproto_destroy__
, p
);
1380 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1381 * kernel datapath, for example, this destroys the datapath in the kernel, and
1382 * with the netdev-based datapath, it tears down the data structures that
1383 * represent the datapath.
1385 * The datapath should not be currently open as an ofproto. */
1387 ofproto_delete(const char *name
, const char *type
)
1389 const struct ofproto_class
*class = ofproto_class_find__(type
);
1390 return (!class ? EAFNOSUPPORT
1391 : !class->del
? EACCES
1392 : class->del(type
, name
));
1396 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1398 if (error
== ENOBUFS
) {
1399 reinit_ports(ofproto
);
1400 } else if (!error
) {
1401 update_port(ofproto
, devname
);
1407 ofproto_type_run(const char *datapath_type
)
1409 const struct ofproto_class
*class;
1412 datapath_type
= ofproto_normalize_type(datapath_type
);
1413 class = ofproto_class_find__(datapath_type
);
1415 error
= class->type_run
? class->type_run(datapath_type
) : 0;
1416 if (error
&& error
!= EAGAIN
) {
1417 VLOG_ERR_RL(&rl
, "%s: type_run failed (%s)",
1418 datapath_type
, ovs_strerror(error
));
1424 ofproto_type_wait(const char *datapath_type
)
1426 const struct ofproto_class
*class;
1428 datapath_type
= ofproto_normalize_type(datapath_type
);
1429 class = ofproto_class_find__(datapath_type
);
1431 if (class->type_wait
) {
1432 class->type_wait(datapath_type
);
1437 any_pending_ops(const struct ofproto
*p
)
1438 OVS_EXCLUDED(ofproto_mutex
)
1442 ovs_mutex_lock(&ofproto_mutex
);
1443 b
= !list_is_empty(&p
->pending
);
1444 ovs_mutex_unlock(&ofproto_mutex
);
1450 ofproto_run(struct ofproto
*p
)
1455 error
= p
->ofproto_class
->run(p
);
1456 if (error
&& error
!= EAGAIN
) {
1457 VLOG_ERR_RL(&rl
, "%s: run failed (%s)", p
->name
, ovs_strerror(error
));
1460 run_rule_executes(p
);
1462 /* Restore the eviction group heap invariant occasionally. */
1463 if (p
->eviction_group_timer
< time_msec()) {
1466 p
->eviction_group_timer
= time_msec() + 1000;
1468 for (i
= 0; i
< p
->n_tables
; i
++) {
1469 struct oftable
*table
= &p
->tables
[i
];
1470 struct eviction_group
*evg
;
1471 struct cls_cursor cursor
;
1474 if (!table
->eviction_fields
) {
1478 ovs_mutex_lock(&ofproto_mutex
);
1479 fat_rwlock_rdlock(&table
->cls
.rwlock
);
1480 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1481 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
1482 if (rule
->idle_timeout
|| rule
->hard_timeout
) {
1483 if (!rule
->eviction_group
) {
1484 eviction_group_add_rule(rule
);
1486 heap_raw_change(&rule
->evg_node
,
1487 rule_eviction_priority(p
, rule
));
1491 fat_rwlock_unlock(&table
->cls
.rwlock
);
1493 HEAP_FOR_EACH (evg
, size_node
, &table
->eviction_groups_by_size
) {
1494 heap_rebuild(&evg
->rules
);
1496 ovs_mutex_unlock(&ofproto_mutex
);
1500 if (p
->ofproto_class
->port_poll
) {
1503 while ((error
= p
->ofproto_class
->port_poll(p
, &devname
)) != EAGAIN
) {
1504 process_port_change(p
, error
, devname
);
1508 new_seq
= seq_read(connectivity_seq_get());
1509 if (new_seq
!= p
->change_seq
) {
1510 struct sset devnames
;
1511 const char *devname
;
1512 struct ofport
*ofport
;
1514 /* Update OpenFlow port status for any port whose netdev has changed.
1516 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1517 * destroyed, so it's not safe to update ports directly from the
1518 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1519 * need this two-phase approach. */
1520 sset_init(&devnames
);
1521 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1522 uint64_t port_change_seq
;
1524 port_change_seq
= netdev_get_change_seq(ofport
->netdev
);
1525 if (ofport
->change_seq
!= port_change_seq
) {
1526 ofport
->change_seq
= port_change_seq
;
1527 sset_add(&devnames
, netdev_get_name(ofport
->netdev
));
1530 SSET_FOR_EACH (devname
, &devnames
) {
1531 update_port(p
, devname
);
1533 sset_destroy(&devnames
);
1535 p
->change_seq
= new_seq
;
1540 connmgr_run(p
->connmgr
, handle_openflow
);
1544 connmgr_run(p
->connmgr
, NULL
);
1546 if (!any_pending_ops(p
)) {
1547 p
->state
= S_OPENFLOW
;
1552 connmgr_run(p
->connmgr
, NULL
);
1554 if (!any_pending_ops(p
)) {
1555 connmgr_flushed(p
->connmgr
);
1556 p
->state
= S_OPENFLOW
;
1564 if (time_msec() >= p
->next_op_report
) {
1565 long long int ago
= (time_msec() - p
->first_op
) / 1000;
1566 long long int interval
= (p
->last_op
- p
->first_op
) / 1000;
1570 ds_put_format(&s
, "%d flow_mods ",
1571 p
->n_add
+ p
->n_delete
+ p
->n_modify
);
1572 if (interval
== ago
) {
1573 ds_put_format(&s
, "in the last %lld s", ago
);
1574 } else if (interval
) {
1575 ds_put_format(&s
, "in the %lld s starting %lld s ago",
1578 ds_put_format(&s
, "%lld s ago", ago
);
1581 ds_put_cstr(&s
, " (");
1583 ds_put_format(&s
, "%d adds, ", p
->n_add
);
1586 ds_put_format(&s
, "%d deletes, ", p
->n_delete
);
1589 ds_put_format(&s
, "%d modifications, ", p
->n_modify
);
1592 ds_put_char(&s
, ')');
1594 VLOG_INFO("%s: %s", p
->name
, ds_cstr(&s
));
1597 p
->n_add
= p
->n_delete
= p
->n_modify
= 0;
1598 p
->next_op_report
= LLONG_MAX
;
1605 ofproto_wait(struct ofproto
*p
)
1607 p
->ofproto_class
->wait(p
);
1608 if (p
->ofproto_class
->port_poll_wait
) {
1609 p
->ofproto_class
->port_poll_wait(p
);
1611 seq_wait(connectivity_seq_get(), p
->change_seq
);
1615 connmgr_wait(p
->connmgr
, true);
1620 connmgr_wait(p
->connmgr
, false);
1621 if (!any_pending_ops(p
)) {
1622 poll_immediate_wake();
1629 ofproto_is_alive(const struct ofproto
*p
)
1631 return connmgr_has_controllers(p
->connmgr
);
1634 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1635 * memory_report(). */
1637 ofproto_get_memory_usage(const struct ofproto
*ofproto
, struct simap
*usage
)
1639 const struct oftable
*table
;
1640 unsigned int n_rules
;
1642 simap_increase(usage
, "ports", hmap_count(&ofproto
->ports
));
1644 ovs_mutex_lock(&ofproto_mutex
);
1645 simap_increase(usage
, "ops",
1646 ofproto
->n_pending
+ hmap_count(&ofproto
->deletions
));
1647 ovs_mutex_unlock(&ofproto_mutex
);
1650 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1651 fat_rwlock_rdlock(&table
->cls
.rwlock
);
1652 n_rules
+= classifier_count(&table
->cls
);
1653 fat_rwlock_unlock(&table
->cls
.rwlock
);
1655 simap_increase(usage
, "rules", n_rules
);
1657 if (ofproto
->ofproto_class
->get_memory_usage
) {
1658 ofproto
->ofproto_class
->get_memory_usage(ofproto
, usage
);
1661 connmgr_get_memory_usage(ofproto
->connmgr
, usage
);
1665 ofproto_type_get_memory_usage(const char *datapath_type
, struct simap
*usage
)
1667 const struct ofproto_class
*class;
1669 datapath_type
= ofproto_normalize_type(datapath_type
);
1670 class = ofproto_class_find__(datapath_type
);
1672 if (class && class->type_get_memory_usage
) {
1673 class->type_get_memory_usage(datapath_type
, usage
);
1678 ofproto_get_ofproto_controller_info(const struct ofproto
*ofproto
,
1681 connmgr_get_controller_info(ofproto
->connmgr
, info
);
1685 ofproto_free_ofproto_controller_info(struct shash
*info
)
1687 connmgr_free_controller_info(info
);
1690 /* Makes a deep copy of 'old' into 'port'. */
1692 ofproto_port_clone(struct ofproto_port
*port
, const struct ofproto_port
*old
)
1694 port
->name
= xstrdup(old
->name
);
1695 port
->type
= xstrdup(old
->type
);
1696 port
->ofp_port
= old
->ofp_port
;
1699 /* Frees memory allocated to members of 'ofproto_port'.
1701 * Do not call this function on an ofproto_port obtained from
1702 * ofproto_port_dump_next(): that function retains ownership of the data in the
1705 ofproto_port_destroy(struct ofproto_port
*ofproto_port
)
1707 free(ofproto_port
->name
);
1708 free(ofproto_port
->type
);
1711 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1713 * This function provides no status indication. An error status for the entire
1714 * dump operation is provided when it is completed by calling
1715 * ofproto_port_dump_done().
1718 ofproto_port_dump_start(struct ofproto_port_dump
*dump
,
1719 const struct ofproto
*ofproto
)
1721 dump
->ofproto
= ofproto
;
1722 dump
->error
= ofproto
->ofproto_class
->port_dump_start(ofproto
,
1726 /* Attempts to retrieve another port from 'dump', which must have been created
1727 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1728 * 'port' and returns true. On failure, returns false.
1730 * Failure might indicate an actual error or merely that the last port has been
1731 * dumped. An error status for the entire dump operation is provided when it
1732 * is completed by calling ofproto_port_dump_done().
1734 * The ofproto owns the data stored in 'port'. It will remain valid until at
1735 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1736 * ofproto_port_dump_done(). */
1738 ofproto_port_dump_next(struct ofproto_port_dump
*dump
,
1739 struct ofproto_port
*port
)
1741 const struct ofproto
*ofproto
= dump
->ofproto
;
1747 dump
->error
= ofproto
->ofproto_class
->port_dump_next(ofproto
, dump
->state
,
1750 ofproto
->ofproto_class
->port_dump_done(ofproto
, dump
->state
);
1756 /* Completes port table dump operation 'dump', which must have been created
1757 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1758 * error-free, otherwise a positive errno value describing the problem. */
1760 ofproto_port_dump_done(struct ofproto_port_dump
*dump
)
1762 const struct ofproto
*ofproto
= dump
->ofproto
;
1764 dump
->error
= ofproto
->ofproto_class
->port_dump_done(ofproto
,
1767 return dump
->error
== EOF
? 0 : dump
->error
;
1770 /* Returns the type to pass to netdev_open() when a datapath of type
1771 * 'datapath_type' has a port of type 'port_type', for a few special
1772 * cases when a netdev type differs from a port type. For example, when
1773 * using the userspace datapath, a port of type "internal" needs to be
1776 * Returns either 'type' itself or a string literal, which must not be
1779 ofproto_port_open_type(const char *datapath_type
, const char *port_type
)
1781 const struct ofproto_class
*class;
1783 datapath_type
= ofproto_normalize_type(datapath_type
);
1784 class = ofproto_class_find__(datapath_type
);
1789 return (class->port_open_type
1790 ? class->port_open_type(datapath_type
, port_type
)
1794 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1795 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1796 * the port's OpenFlow port number.
1798 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1799 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1800 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1801 * 'ofp_portp' is non-null). */
1803 ofproto_port_add(struct ofproto
*ofproto
, struct netdev
*netdev
,
1804 ofp_port_t
*ofp_portp
)
1806 ofp_port_t ofp_port
= ofp_portp
? *ofp_portp
: OFPP_NONE
;
1809 error
= ofproto
->ofproto_class
->port_add(ofproto
, netdev
);
1811 const char *netdev_name
= netdev_get_name(netdev
);
1813 simap_put(&ofproto
->ofp_requests
, netdev_name
,
1814 ofp_to_u16(ofp_port
));
1815 update_port(ofproto
, netdev_name
);
1818 *ofp_portp
= OFPP_NONE
;
1820 struct ofproto_port ofproto_port
;
1822 error
= ofproto_port_query_by_name(ofproto
,
1823 netdev_get_name(netdev
),
1826 *ofp_portp
= ofproto_port
.ofp_port
;
1827 ofproto_port_destroy(&ofproto_port
);
1834 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1835 * initializes '*port' appropriately; on failure, returns a positive errno
1838 * The caller owns the data in 'ofproto_port' and must free it with
1839 * ofproto_port_destroy() when it is no longer needed. */
1841 ofproto_port_query_by_name(const struct ofproto
*ofproto
, const char *devname
,
1842 struct ofproto_port
*port
)
1846 error
= ofproto
->ofproto_class
->port_query_by_name(ofproto
, devname
, port
);
1848 memset(port
, 0, sizeof *port
);
1853 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1854 * Returns 0 if successful, otherwise a positive errno. */
1856 ofproto_port_del(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1858 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1859 const char *name
= ofport
? netdev_get_name(ofport
->netdev
) : "<unknown>";
1860 struct simap_node
*ofp_request_node
;
1863 ofp_request_node
= simap_find(&ofproto
->ofp_requests
, name
);
1864 if (ofp_request_node
) {
1865 simap_delete(&ofproto
->ofp_requests
, ofp_request_node
);
1868 error
= ofproto
->ofproto_class
->port_del(ofproto
, ofp_port
);
1869 if (!error
&& ofport
) {
1870 /* 'name' is the netdev's name and update_port() is going to close the
1871 * netdev. Just in case update_port() refers to 'name' after it
1872 * destroys 'ofport', make a copy of it around the update_port()
1874 char *devname
= xstrdup(name
);
1875 update_port(ofproto
, devname
);
1882 flow_mod_init(struct ofputil_flow_mod
*fm
,
1883 const struct match
*match
, unsigned int priority
,
1884 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
1885 enum ofp_flow_mod_command command
)
1887 memset(fm
, 0, sizeof *fm
);
1889 fm
->priority
= priority
;
1892 fm
->modify_cookie
= false;
1894 fm
->command
= command
;
1895 fm
->idle_timeout
= 0;
1896 fm
->hard_timeout
= 0;
1897 fm
->buffer_id
= UINT32_MAX
;
1898 fm
->out_port
= OFPP_ANY
;
1899 fm
->out_group
= OFPG_ANY
;
1901 fm
->ofpacts
= CONST_CAST(struct ofpact
*, ofpacts
);
1902 fm
->ofpacts_len
= ofpacts_len
;
1906 simple_flow_mod(struct ofproto
*ofproto
,
1907 const struct match
*match
, unsigned int priority
,
1908 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
1909 enum ofp_flow_mod_command command
)
1911 struct ofputil_flow_mod fm
;
1913 flow_mod_init(&fm
, match
, priority
, ofpacts
, ofpacts_len
, command
);
1915 return handle_flow_mod__(ofproto
, NULL
, &fm
, NULL
);
1918 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1919 * performs the 'n_actions' actions in 'actions'. The new flow will not
1922 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1923 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1924 * controllers; otherwise, it will be hidden.
1926 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1928 * This is a helper function for in-band control and fail-open. */
1930 ofproto_add_flow(struct ofproto
*ofproto
, const struct match
*match
,
1931 unsigned int priority
,
1932 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
1933 OVS_EXCLUDED(ofproto_mutex
)
1935 const struct rule
*rule
;
1938 /* First do a cheap check whether the rule we're looking for already exists
1939 * with the actions that we want. If it does, then we're done. */
1940 fat_rwlock_rdlock(&ofproto
->tables
[0].cls
.rwlock
);
1941 rule
= rule_from_cls_rule(classifier_find_match_exactly(
1942 &ofproto
->tables
[0].cls
, match
, priority
));
1944 const struct rule_actions
*actions
= rule_get_actions(rule
);
1945 must_add
= !ofpacts_equal(actions
->ofpacts
, actions
->ofpacts_len
,
1946 ofpacts
, ofpacts_len
);
1950 fat_rwlock_unlock(&ofproto
->tables
[0].cls
.rwlock
);
1952 /* If there's no such rule or the rule doesn't have the actions we want,
1953 * fall back to a executing a full flow mod. We can't optimize this at
1954 * all because we didn't take enough locks above to ensure that the flow
1955 * table didn't already change beneath us. */
1957 simple_flow_mod(ofproto
, match
, priority
, ofpacts
, ofpacts_len
,
1958 OFPFC_MODIFY_STRICT
);
1962 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1963 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1964 * operation cannot be initiated now but may be retried later.
1966 * This is a helper function for in-band control and fail-open and the "learn"
1969 ofproto_flow_mod(struct ofproto
*ofproto
, struct ofputil_flow_mod
*fm
)
1970 OVS_EXCLUDED(ofproto_mutex
)
1972 /* Optimize for the most common case of a repeated learn action.
1973 * If an identical flow already exists we only need to update its
1974 * 'modified' time. */
1975 if (fm
->command
== OFPFC_MODIFY_STRICT
&& fm
->table_id
!= OFPTT_ALL
1976 && !(fm
->flags
& OFPUTIL_FF_RESET_COUNTS
)) {
1977 struct oftable
*table
= &ofproto
->tables
[fm
->table_id
];
1978 struct cls_rule match_rule
;
1982 cls_rule_init(&match_rule
, &fm
->match
, fm
->priority
);
1983 fat_rwlock_rdlock(&table
->cls
.rwlock
);
1984 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
,
1987 /* Reading many of the rule fields and writing on 'modified'
1988 * requires the rule->mutex. Also, rule->actions may change
1989 * if rule->mutex is not held. */
1990 const struct rule_actions
*actions
;
1992 ovs_mutex_lock(&rule
->mutex
);
1993 actions
= rule_get_actions(rule
);
1994 if (rule
->idle_timeout
== fm
->idle_timeout
1995 && rule
->hard_timeout
== fm
->hard_timeout
1996 && rule
->flags
== (fm
->flags
& OFPUTIL_FF_STATE
)
1997 && (!fm
->modify_cookie
|| (fm
->new_cookie
== rule
->flow_cookie
))
1998 && ofpacts_equal(fm
->ofpacts
, fm
->ofpacts_len
,
1999 actions
->ofpacts
, actions
->ofpacts_len
)) {
2000 /* Rule already exists and need not change, only update the
2001 modified timestamp. */
2002 rule
->modified
= time_msec();
2005 ovs_mutex_unlock(&rule
->mutex
);
2007 fat_rwlock_unlock(&table
->cls
.rwlock
);
2014 return handle_flow_mod__(ofproto
, NULL
, fm
, NULL
);
2017 /* Resets the modified time for 'rule' or an equivalent rule. If 'rule' is not
2018 * in the classifier, but an equivalent rule is, unref 'rule' and ref the new
2019 * rule. Otherwise if 'rule' is no longer installed in the classifier,
2022 * Returns the rule whose modified time has been reset. */
2024 ofproto_refresh_rule(struct rule
*rule
)
2026 const struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
2027 const struct cls_rule
*cr
= &rule
->cr
;
2030 /* do_add_flow() requires that the rule is not installed. We lock the
2031 * ofproto_mutex here so that another thread cannot add the flow before
2032 * we get a chance to add it.*/
2033 ovs_mutex_lock(&ofproto_mutex
);
2035 fat_rwlock_rdlock(&table
->cls
.rwlock
);
2036 r
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
, cr
));
2038 ofproto_rule_ref(r
);
2040 fat_rwlock_unlock(&table
->cls
.rwlock
);
2043 do_add_flow(rule
->ofproto
, NULL
, NULL
, 0, rule
);
2044 } else if (r
!= rule
) {
2045 ofproto_rule_unref(rule
);
2048 ovs_mutex_unlock(&ofproto_mutex
);
2050 /* Refresh the modified time for the rule. */
2051 ovs_mutex_lock(&rule
->mutex
);
2052 rule
->modified
= MAX(rule
->modified
, time_msec());
2053 ovs_mutex_unlock(&rule
->mutex
);
2058 /* Searches for a rule with matching criteria exactly equal to 'target' in
2059 * ofproto's table 0 and, if it finds one, deletes it.
2061 * This is a helper function for in-band control and fail-open. */
2063 ofproto_delete_flow(struct ofproto
*ofproto
,
2064 const struct match
*target
, unsigned int priority
)
2065 OVS_EXCLUDED(ofproto_mutex
)
2067 struct classifier
*cls
= &ofproto
->tables
[0].cls
;
2070 /* First do a cheap check whether the rule we're looking for has already
2071 * been deleted. If so, then we're done. */
2072 fat_rwlock_rdlock(&cls
->rwlock
);
2073 rule
= rule_from_cls_rule(classifier_find_match_exactly(cls
, target
,
2075 fat_rwlock_unlock(&cls
->rwlock
);
2080 /* Fall back to a executing a full flow mod. We can't optimize this at all
2081 * because we didn't take enough locks above to ensure that the flow table
2082 * didn't already change beneath us. */
2083 return simple_flow_mod(ofproto
, target
, priority
, NULL
, 0,
2084 OFPFC_DELETE_STRICT
) != OFPROTO_POSTPONE
;
2087 /* Starts the process of deleting all of the flows from all of ofproto's flow
2088 * tables and then reintroducing the flows required by in-band control and
2089 * fail-open. The process will complete in a later call to ofproto_run(). */
2091 ofproto_flush_flows(struct ofproto
*ofproto
)
2093 COVERAGE_INC(ofproto_flush
);
2094 ofproto
->state
= S_FLUSH
;
2098 reinit_ports(struct ofproto
*p
)
2100 struct ofproto_port_dump dump
;
2101 struct sset devnames
;
2102 struct ofport
*ofport
;
2103 struct ofproto_port ofproto_port
;
2104 const char *devname
;
2106 COVERAGE_INC(ofproto_reinit_ports
);
2108 sset_init(&devnames
);
2109 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2110 sset_add(&devnames
, netdev_get_name(ofport
->netdev
));
2112 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
2113 sset_add(&devnames
, ofproto_port
.name
);
2116 SSET_FOR_EACH (devname
, &devnames
) {
2117 update_port(p
, devname
);
2119 sset_destroy(&devnames
);
2123 alloc_ofp_port(struct ofproto
*ofproto
, const char *netdev_name
)
2127 port_idx
= simap_get(&ofproto
->ofp_requests
, netdev_name
);
2128 port_idx
= port_idx
? port_idx
: UINT16_MAX
;
2130 if (port_idx
>= ofproto
->max_ports
2131 || ofport_get_usage(ofproto
, u16_to_ofp(port_idx
)) == LLONG_MAX
) {
2132 uint16_t lru_ofport
= 0, end_port_no
= ofproto
->alloc_port_no
;
2133 long long int last_used_at
, lru
= LLONG_MAX
;
2135 /* Search for a free OpenFlow port number. We try not to
2136 * immediately reuse them to prevent problems due to old
2139 * We limit the automatically assigned port numbers to the lower half
2140 * of the port range, to reserve the upper half for assignment by
2143 if (++ofproto
->alloc_port_no
>= MIN(ofproto
->max_ports
, 32768)) {
2144 ofproto
->alloc_port_no
= 1;
2146 last_used_at
= ofport_get_usage(ofproto
,
2147 u16_to_ofp(ofproto
->alloc_port_no
));
2148 if (!last_used_at
) {
2149 port_idx
= ofproto
->alloc_port_no
;
2151 } else if ( last_used_at
< time_msec() - 60*60*1000) {
2152 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2153 * more than an hour ago, consider it usable. */
2154 ofport_remove_usage(ofproto
,
2155 u16_to_ofp(ofproto
->alloc_port_no
));
2156 port_idx
= ofproto
->alloc_port_no
;
2158 } else if (last_used_at
< lru
) {
2160 lru_ofport
= ofproto
->alloc_port_no
;
2163 if (ofproto
->alloc_port_no
== end_port_no
) {
2165 port_idx
= lru_ofport
;
2172 ofport_set_usage(ofproto
, u16_to_ofp(port_idx
), LLONG_MAX
);
2173 return u16_to_ofp(port_idx
);
2177 dealloc_ofp_port(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
2179 if (ofp_to_u16(ofp_port
) < ofproto
->max_ports
) {
2180 ofport_set_usage(ofproto
, ofp_port
, time_msec());
2184 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2185 * pointer if the netdev cannot be opened. On success, also fills in
2187 static struct netdev
*
2188 ofport_open(struct ofproto
*ofproto
,
2189 struct ofproto_port
*ofproto_port
,
2190 struct ofputil_phy_port
*pp
)
2192 enum netdev_flags flags
;
2193 struct netdev
*netdev
;
2196 error
= netdev_open(ofproto_port
->name
, ofproto_port
->type
, &netdev
);
2198 VLOG_WARN_RL(&rl
, "%s: ignoring port %s (%"PRIu16
") because netdev %s "
2199 "cannot be opened (%s)",
2201 ofproto_port
->name
, ofproto_port
->ofp_port
,
2202 ofproto_port
->name
, ovs_strerror(error
));
2206 if (ofproto_port
->ofp_port
== OFPP_NONE
) {
2207 if (!strcmp(ofproto
->name
, ofproto_port
->name
)) {
2208 ofproto_port
->ofp_port
= OFPP_LOCAL
;
2210 ofproto_port
->ofp_port
= alloc_ofp_port(ofproto
,
2211 ofproto_port
->name
);
2214 pp
->port_no
= ofproto_port
->ofp_port
;
2215 netdev_get_etheraddr(netdev
, pp
->hw_addr
);
2216 ovs_strlcpy(pp
->name
, ofproto_port
->name
, sizeof pp
->name
);
2217 netdev_get_flags(netdev
, &flags
);
2218 pp
->config
= flags
& NETDEV_UP
? 0 : OFPUTIL_PC_PORT_DOWN
;
2219 pp
->state
= netdev_get_carrier(netdev
) ? 0 : OFPUTIL_PS_LINK_DOWN
;
2220 netdev_get_features(netdev
, &pp
->curr
, &pp
->advertised
,
2221 &pp
->supported
, &pp
->peer
);
2222 pp
->curr_speed
= netdev_features_to_bps(pp
->curr
, 0) / 1000;
2223 pp
->max_speed
= netdev_features_to_bps(pp
->supported
, 0) / 1000;
2228 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2229 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
2232 ofport_equal(const struct ofputil_phy_port
*a
,
2233 const struct ofputil_phy_port
*b
)
2235 return (eth_addr_equals(a
->hw_addr
, b
->hw_addr
)
2236 && a
->state
== b
->state
2237 && !((a
->config
^ b
->config
) & OFPUTIL_PC_PORT_DOWN
)
2238 && a
->curr
== b
->curr
2239 && a
->advertised
== b
->advertised
2240 && a
->supported
== b
->supported
2241 && a
->peer
== b
->peer
2242 && a
->curr_speed
== b
->curr_speed
2243 && a
->max_speed
== b
->max_speed
);
2246 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2247 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2248 * one with the same name or port number). */
2250 ofport_install(struct ofproto
*p
,
2251 struct netdev
*netdev
, const struct ofputil_phy_port
*pp
)
2253 const char *netdev_name
= netdev_get_name(netdev
);
2254 struct ofport
*ofport
;
2257 /* Create ofport. */
2258 ofport
= p
->ofproto_class
->port_alloc();
2263 ofport
->ofproto
= p
;
2264 ofport
->netdev
= netdev
;
2265 ofport
->change_seq
= netdev_get_change_seq(netdev
);
2267 ofport
->ofp_port
= pp
->port_no
;
2268 ofport
->created
= time_msec();
2270 /* Add port to 'p'. */
2271 hmap_insert(&p
->ports
, &ofport
->hmap_node
,
2272 hash_ofp_port(ofport
->ofp_port
));
2273 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
2275 update_mtu(p
, ofport
);
2277 /* Let the ofproto_class initialize its private data. */
2278 error
= p
->ofproto_class
->port_construct(ofport
);
2282 connmgr_send_port_status(p
->connmgr
, NULL
, pp
, OFPPR_ADD
);
2286 VLOG_WARN_RL(&rl
, "%s: could not add port %s (%s)",
2287 p
->name
, netdev_name
, ovs_strerror(error
));
2289 ofport_destroy__(ofport
);
2291 netdev_close(netdev
);
2295 /* Removes 'ofport' from 'p' and destroys it. */
2297 ofport_remove(struct ofport
*ofport
)
2299 connmgr_send_port_status(ofport
->ofproto
->connmgr
, NULL
, &ofport
->pp
,
2301 ofport_destroy(ofport
);
2304 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2307 ofport_remove_with_name(struct ofproto
*ofproto
, const char *name
)
2309 struct ofport
*port
= shash_find_data(&ofproto
->port_by_name
, name
);
2311 ofport_remove(port
);
2315 /* Updates 'port' with new 'pp' description.
2317 * Does not handle a name or port number change. The caller must implement
2318 * such a change as a delete followed by an add. */
2320 ofport_modified(struct ofport
*port
, struct ofputil_phy_port
*pp
)
2322 memcpy(port
->pp
.hw_addr
, pp
->hw_addr
, ETH_ADDR_LEN
);
2323 port
->pp
.config
= ((port
->pp
.config
& ~OFPUTIL_PC_PORT_DOWN
)
2324 | (pp
->config
& OFPUTIL_PC_PORT_DOWN
));
2325 port
->pp
.state
= ((port
->pp
.state
& ~OFPUTIL_PS_LINK_DOWN
)
2326 | (pp
->state
& OFPUTIL_PS_LINK_DOWN
));
2327 port
->pp
.curr
= pp
->curr
;
2328 port
->pp
.advertised
= pp
->advertised
;
2329 port
->pp
.supported
= pp
->supported
;
2330 port
->pp
.peer
= pp
->peer
;
2331 port
->pp
.curr_speed
= pp
->curr_speed
;
2332 port
->pp
.max_speed
= pp
->max_speed
;
2334 connmgr_send_port_status(port
->ofproto
->connmgr
, NULL
,
2335 &port
->pp
, OFPPR_MODIFY
);
2338 /* Update OpenFlow 'state' in 'port' and notify controller. */
2340 ofproto_port_set_state(struct ofport
*port
, enum ofputil_port_state state
)
2342 if (port
->pp
.state
!= state
) {
2343 port
->pp
.state
= state
;
2344 connmgr_send_port_status(port
->ofproto
->connmgr
, NULL
,
2345 &port
->pp
, OFPPR_MODIFY
);
2350 ofproto_port_unregister(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
2352 struct ofport
*port
= ofproto_get_port(ofproto
, ofp_port
);
2354 if (port
->ofproto
->ofproto_class
->set_realdev
) {
2355 port
->ofproto
->ofproto_class
->set_realdev(port
, 0, 0);
2357 if (port
->ofproto
->ofproto_class
->set_stp_port
) {
2358 port
->ofproto
->ofproto_class
->set_stp_port(port
, NULL
);
2360 if (port
->ofproto
->ofproto_class
->set_cfm
) {
2361 port
->ofproto
->ofproto_class
->set_cfm(port
, NULL
);
2363 if (port
->ofproto
->ofproto_class
->bundle_remove
) {
2364 port
->ofproto
->ofproto_class
->bundle_remove(port
);
2370 ofport_destroy__(struct ofport
*port
)
2372 struct ofproto
*ofproto
= port
->ofproto
;
2373 const char *name
= netdev_get_name(port
->netdev
);
2375 hmap_remove(&ofproto
->ports
, &port
->hmap_node
);
2376 shash_delete(&ofproto
->port_by_name
,
2377 shash_find(&ofproto
->port_by_name
, name
));
2379 netdev_close(port
->netdev
);
2380 ofproto
->ofproto_class
->port_dealloc(port
);
2384 ofport_destroy(struct ofport
*port
)
2387 dealloc_ofp_port(port
->ofproto
, port
->ofp_port
);
2388 port
->ofproto
->ofproto_class
->port_destruct(port
);
2389 ofport_destroy__(port
);
2394 ofproto_get_port(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
2396 struct ofport
*port
;
2398 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
, hash_ofp_port(ofp_port
),
2400 if (port
->ofp_port
== ofp_port
) {
2407 static long long int
2408 ofport_get_usage(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
2410 struct ofport_usage
*usage
;
2412 HMAP_FOR_EACH_IN_BUCKET (usage
, hmap_node
, hash_ofp_port(ofp_port
),
2413 &ofproto
->ofport_usage
) {
2414 if (usage
->ofp_port
== ofp_port
) {
2415 return usage
->last_used
;
2422 ofport_set_usage(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
2423 long long int last_used
)
2425 struct ofport_usage
*usage
;
2426 HMAP_FOR_EACH_IN_BUCKET (usage
, hmap_node
, hash_ofp_port(ofp_port
),
2427 &ofproto
->ofport_usage
) {
2428 if (usage
->ofp_port
== ofp_port
) {
2429 usage
->last_used
= last_used
;
2433 ovs_assert(last_used
== LLONG_MAX
);
2435 usage
= xmalloc(sizeof *usage
);
2436 usage
->ofp_port
= ofp_port
;
2437 usage
->last_used
= last_used
;
2438 hmap_insert(&ofproto
->ofport_usage
, &usage
->hmap_node
,
2439 hash_ofp_port(ofp_port
));
2443 ofport_remove_usage(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
2445 struct ofport_usage
*usage
;
2446 HMAP_FOR_EACH_IN_BUCKET (usage
, hmap_node
, hash_ofp_port(ofp_port
),
2447 &ofproto
->ofport_usage
) {
2448 if (usage
->ofp_port
== ofp_port
) {
2449 hmap_remove(&ofproto
->ofport_usage
, &usage
->hmap_node
);
2457 ofproto_port_get_stats(const struct ofport
*port
, struct netdev_stats
*stats
)
2459 struct ofproto
*ofproto
= port
->ofproto
;
2462 if (ofproto
->ofproto_class
->port_get_stats
) {
2463 error
= ofproto
->ofproto_class
->port_get_stats(port
, stats
);
2472 update_port(struct ofproto
*ofproto
, const char *name
)
2474 struct ofproto_port ofproto_port
;
2475 struct ofputil_phy_port pp
;
2476 struct netdev
*netdev
;
2477 struct ofport
*port
;
2479 COVERAGE_INC(ofproto_update_port
);
2481 /* Fetch 'name''s location and properties from the datapath. */
2482 netdev
= (!ofproto_port_query_by_name(ofproto
, name
, &ofproto_port
)
2483 ? ofport_open(ofproto
, &ofproto_port
, &pp
)
2487 port
= ofproto_get_port(ofproto
, ofproto_port
.ofp_port
);
2488 if (port
&& !strcmp(netdev_get_name(port
->netdev
), name
)) {
2489 struct netdev
*old_netdev
= port
->netdev
;
2491 /* 'name' hasn't changed location. Any properties changed? */
2492 if (!ofport_equal(&port
->pp
, &pp
)) {
2493 ofport_modified(port
, &pp
);
2496 update_mtu(ofproto
, port
);
2498 /* Install the newly opened netdev in case it has changed.
2499 * Don't close the old netdev yet in case port_modified has to
2500 * remove a retained reference to it.*/
2501 port
->netdev
= netdev
;
2502 port
->change_seq
= netdev_get_change_seq(netdev
);
2504 if (port
->ofproto
->ofproto_class
->port_modified
) {
2505 port
->ofproto
->ofproto_class
->port_modified(port
);
2508 netdev_close(old_netdev
);
2510 /* If 'port' is nonnull then its name differs from 'name' and thus
2511 * we should delete it. If we think there's a port named 'name'
2512 * then its port number must be wrong now so delete it too. */
2514 ofport_remove(port
);
2516 ofport_remove_with_name(ofproto
, name
);
2517 ofport_install(ofproto
, netdev
, &pp
);
2520 /* Any port named 'name' is gone now. */
2521 ofport_remove_with_name(ofproto
, name
);
2523 ofproto_port_destroy(&ofproto_port
);
2527 init_ports(struct ofproto
*p
)
2529 struct ofproto_port_dump dump
;
2530 struct ofproto_port ofproto_port
;
2531 struct shash_node
*node
, *next
;
2533 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
2534 const char *name
= ofproto_port
.name
;
2536 if (shash_find(&p
->port_by_name
, name
)) {
2537 VLOG_WARN_RL(&rl
, "%s: ignoring duplicate device %s in datapath",
2540 struct ofputil_phy_port pp
;
2541 struct netdev
*netdev
;
2543 /* Check if an OpenFlow port number had been requested. */
2544 node
= shash_find(&init_ofp_ports
, name
);
2546 const struct iface_hint
*iface_hint
= node
->data
;
2547 simap_put(&p
->ofp_requests
, name
,
2548 ofp_to_u16(iface_hint
->ofp_port
));
2551 netdev
= ofport_open(p
, &ofproto_port
, &pp
);
2553 ofport_install(p
, netdev
, &pp
);
2554 if (ofp_to_u16(ofproto_port
.ofp_port
) < p
->max_ports
) {
2555 p
->alloc_port_no
= MAX(p
->alloc_port_no
,
2556 ofp_to_u16(ofproto_port
.ofp_port
));
2562 SHASH_FOR_EACH_SAFE(node
, next
, &init_ofp_ports
) {
2563 struct iface_hint
*iface_hint
= node
->data
;
2565 if (!strcmp(iface_hint
->br_name
, p
->name
)) {
2566 free(iface_hint
->br_name
);
2567 free(iface_hint
->br_type
);
2569 shash_delete(&init_ofp_ports
, node
);
2576 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2577 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2579 find_min_mtu(struct ofproto
*p
)
2581 struct ofport
*ofport
;
2584 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2585 struct netdev
*netdev
= ofport
->netdev
;
2588 /* Skip any internal ports, since that's what we're trying to
2590 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2594 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2597 if (!mtu
|| dev_mtu
< mtu
) {
2602 return mtu
? mtu
: ETH_PAYLOAD_MAX
;
2605 /* Update MTU of all datapath devices on 'p' to the minimum of the
2606 * non-datapath ports in event of 'port' added or changed. */
2608 update_mtu(struct ofproto
*p
, struct ofport
*port
)
2610 struct ofport
*ofport
;
2611 struct netdev
*netdev
= port
->netdev
;
2612 int dev_mtu
, old_min
;
2614 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2618 if (!strcmp(netdev_get_type(port
->netdev
), "internal")) {
2619 if (dev_mtu
> p
->min_mtu
) {
2620 if (!netdev_set_mtu(port
->netdev
, p
->min_mtu
)) {
2621 dev_mtu
= p
->min_mtu
;
2624 port
->mtu
= dev_mtu
;
2628 /* For non-internal port find new min mtu. */
2629 old_min
= p
->min_mtu
;
2630 port
->mtu
= dev_mtu
;
2631 p
->min_mtu
= find_min_mtu(p
);
2632 if (p
->min_mtu
== old_min
) {
2636 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2637 struct netdev
*netdev
= ofport
->netdev
;
2639 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2640 if (!netdev_set_mtu(netdev
, p
->min_mtu
)) {
2641 ofport
->mtu
= p
->min_mtu
;
2648 ofproto_rule_destroy__(struct rule
*rule
)
2649 OVS_NO_THREAD_SAFETY_ANALYSIS
2651 cls_rule_destroy(CONST_CAST(struct cls_rule
*, &rule
->cr
));
2652 rule_actions_destroy(rule_get_actions(rule
));
2653 ovs_mutex_destroy(&rule
->mutex
);
2654 rule
->ofproto
->ofproto_class
->rule_dealloc(rule
);
2658 rule_destroy_cb(struct rule
*rule
)
2660 rule
->ofproto
->ofproto_class
->rule_destruct(rule
);
2661 ofproto_rule_destroy__(rule
);
2665 ofproto_rule_ref(struct rule
*rule
)
2668 ovs_refcount_ref(&rule
->ref_count
);
2672 /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
2673 * ref_count reaches 0.
2675 * Use of RCU allows short term use (between RCU quiescent periods) without
2676 * keeping a reference. A reference must be taken if the rule needs to
2677 * stay around accross the RCU quiescent periods. */
2679 ofproto_rule_unref(struct rule
*rule
)
2681 if (rule
&& ovs_refcount_unref(&rule
->ref_count
) == 1) {
2682 ovsrcu_postpone(rule_destroy_cb
, rule
);
2686 static uint32_t get_provider_meter_id(const struct ofproto
*,
2687 uint32_t of_meter_id
);
2689 /* Creates and returns a new 'struct rule_actions', whose actions are a copy
2690 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2691 const struct rule_actions
*
2692 rule_actions_create(const struct ofproto
*ofproto
,
2693 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
2695 struct rule_actions
*actions
;
2697 actions
= xmalloc(sizeof *actions
+ ofpacts_len
);
2698 actions
->ofpacts_len
= ofpacts_len
;
2699 actions
->provider_meter_id
2700 = get_provider_meter_id(ofproto
,
2701 ofpacts_get_meter(ofpacts
, ofpacts_len
));
2702 memcpy(actions
->ofpacts
, ofpacts
, ofpacts_len
);
2707 /* Free the actions after the RCU quiescent period is reached. */
2709 rule_actions_destroy(const struct rule_actions
*actions
)
2712 ovsrcu_postpone(free
, CONST_CAST(struct rule_actions
*, actions
));
2716 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2717 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2719 ofproto_rule_has_out_port(const struct rule
*rule
, ofp_port_t port
)
2720 OVS_REQUIRES(ofproto_mutex
)
2722 if (port
== OFPP_ANY
) {
2725 const struct rule_actions
*actions
= rule_get_actions(rule
);
2726 return ofpacts_output_to_port(actions
->ofpacts
,
2727 actions
->ofpacts_len
, port
);
2731 /* Returns true if 'rule' has group and equals group_id. */
2733 ofproto_rule_has_out_group(const struct rule
*rule
, uint32_t group_id
)
2734 OVS_REQUIRES(ofproto_mutex
)
2736 if (group_id
== OFPG_ANY
) {
2739 const struct rule_actions
*actions
= rule_get_actions(rule
);
2740 return ofpacts_output_to_group(actions
->ofpacts
,
2741 actions
->ofpacts_len
, group_id
);
2745 /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
2746 * OFPAT_ENQUEUE action that outputs to 'out_port'. */
2748 ofoperation_has_out_port(const struct ofoperation
*op
, ofp_port_t out_port
)
2749 OVS_REQUIRES(ofproto_mutex
)
2751 if (ofproto_rule_has_out_port(op
->rule
, out_port
)) {
2756 case OFOPERATION_ADD
:
2757 case OFOPERATION_DELETE
:
2760 case OFOPERATION_MODIFY
:
2761 case OFOPERATION_REPLACE
:
2762 return ofpacts_output_to_port(op
->actions
->ofpacts
,
2763 op
->actions
->ofpacts_len
, out_port
);
2770 rule_execute_destroy(struct rule_execute
*e
)
2772 ofproto_rule_unref(e
->rule
);
2773 list_remove(&e
->list_node
);
2777 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2778 * by passing them to the ofproto provider. */
2780 run_rule_executes(struct ofproto
*ofproto
)
2781 OVS_EXCLUDED(ofproto_mutex
)
2783 struct rule_execute
*e
, *next
;
2784 struct list executes
;
2786 guarded_list_pop_all(&ofproto
->rule_executes
, &executes
);
2787 LIST_FOR_EACH_SAFE (e
, next
, list_node
, &executes
) {
2790 flow_extract(e
->packet
, NULL
, &flow
);
2791 flow
.in_port
.ofp_port
= e
->in_port
;
2792 ofproto
->ofproto_class
->rule_execute(e
->rule
, &flow
, e
->packet
);
2794 rule_execute_destroy(e
);
2798 /* Destroys and discards all "rule_execute" operations queued up in
2799 * ofproto->rule_executes. */
2801 destroy_rule_executes(struct ofproto
*ofproto
)
2803 struct rule_execute
*e
, *next
;
2804 struct list executes
;
2806 guarded_list_pop_all(&ofproto
->rule_executes
, &executes
);
2807 LIST_FOR_EACH_SAFE (e
, next
, list_node
, &executes
) {
2808 ofpbuf_delete(e
->packet
);
2809 rule_execute_destroy(e
);
2813 /* Returns true if 'rule' should be hidden from the controller.
2815 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
2816 * (e.g. by in-band control) and are intentionally hidden from the
2819 ofproto_rule_is_hidden(const struct rule
*rule
)
2821 return (rule
->cr
.priority
> UINT16_MAX
);
2825 oftable_is_modifiable(const struct oftable
*table
,
2826 enum ofputil_flow_mod_flags flags
)
2828 if (flags
& OFPUTIL_FF_NO_READONLY
) {
2832 return !(table
->flags
& OFTABLE_READONLY
);
2836 rule_is_modifiable(const struct rule
*rule
, enum ofputil_flow_mod_flags flags
)
2838 const struct oftable
*rule_table
;
2840 rule_table
= &rule
->ofproto
->tables
[rule
->table_id
];
2841 return oftable_is_modifiable(rule_table
, flags
);
2845 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2847 ofconn_send_reply(ofconn
, make_echo_reply(oh
));
2852 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2854 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2855 struct ofputil_switch_features features
;
2856 struct ofport
*port
;
2860 ofproto
->ofproto_class
->get_features(ofproto
, &arp_match_ip
,
2862 ovs_assert(features
.actions
& OFPUTIL_A_OUTPUT
); /* sanity check */
2864 features
.datapath_id
= ofproto
->datapath_id
;
2865 features
.n_buffers
= pktbuf_capacity();
2866 features
.n_tables
= ofproto_get_n_visible_tables(ofproto
);
2867 features
.capabilities
= (OFPUTIL_C_FLOW_STATS
| OFPUTIL_C_TABLE_STATS
|
2868 OFPUTIL_C_PORT_STATS
| OFPUTIL_C_QUEUE_STATS
);
2870 features
.capabilities
|= OFPUTIL_C_ARP_MATCH_IP
;
2872 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
2873 features
.auxiliary_id
= 0;
2874 b
= ofputil_encode_switch_features(&features
, ofconn_get_protocol(ofconn
),
2876 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
2877 ofputil_put_switch_features_port(&port
->pp
, b
);
2880 ofconn_send_reply(ofconn
, b
);
2885 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2887 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2888 struct ofp_switch_config
*osc
;
2889 enum ofp_config_flags flags
;
2893 buf
= ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY
, oh
, 0);
2894 osc
= ofpbuf_put_uninit(buf
, sizeof *osc
);
2895 flags
= ofproto
->frag_handling
;
2896 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2897 if (oh
->version
< OFP13_VERSION
2898 && ofconn_get_invalid_ttl_to_controller(ofconn
)) {
2899 flags
|= OFPC_INVALID_TTL_TO_CONTROLLER
;
2901 osc
->flags
= htons(flags
);
2902 osc
->miss_send_len
= htons(ofconn_get_miss_send_len(ofconn
));
2903 ofconn_send_reply(ofconn
, buf
);
2909 handle_set_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2911 const struct ofp_switch_config
*osc
= ofpmsg_body(oh
);
2912 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2913 uint16_t flags
= ntohs(osc
->flags
);
2915 if (ofconn_get_type(ofconn
) != OFCONN_PRIMARY
2916 || ofconn_get_role(ofconn
) != OFPCR12_ROLE_SLAVE
) {
2917 enum ofp_config_flags cur
= ofproto
->frag_handling
;
2918 enum ofp_config_flags next
= flags
& OFPC_FRAG_MASK
;
2920 ovs_assert((cur
& OFPC_FRAG_MASK
) == cur
);
2922 if (ofproto
->ofproto_class
->set_frag_handling(ofproto
, next
)) {
2923 ofproto
->frag_handling
= next
;
2925 VLOG_WARN_RL(&rl
, "%s: unsupported fragment handling mode %s",
2927 ofputil_frag_handling_to_string(next
));
2931 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2932 ofconn_set_invalid_ttl_to_controller(ofconn
,
2933 (oh
->version
< OFP13_VERSION
2934 && flags
& OFPC_INVALID_TTL_TO_CONTROLLER
));
2936 ofconn_set_miss_send_len(ofconn
, ntohs(osc
->miss_send_len
));
2941 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2942 * error message code for the caller to propagate upward. Otherwise, returns
2945 * The log message mentions 'msg_type'. */
2947 reject_slave_controller(struct ofconn
*ofconn
)
2949 if (ofconn_get_type(ofconn
) == OFCONN_PRIMARY
2950 && ofconn_get_role(ofconn
) == OFPCR12_ROLE_SLAVE
) {
2951 return OFPERR_OFPBRC_EPERM
;
2957 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
2960 * - If they use a meter, then 'ofproto' has that meter configured.
2962 * - If they use any groups, then 'ofproto' has that group configured.
2964 * Returns 0 if successful, otherwise an OpenFlow error. */
2966 ofproto_check_ofpacts(struct ofproto
*ofproto
,
2967 const struct ofpact ofpacts
[], size_t ofpacts_len
)
2969 const struct ofpact
*a
;
2972 mid
= ofpacts_get_meter(ofpacts
, ofpacts_len
);
2973 if (mid
&& get_provider_meter_id(ofproto
, mid
) == UINT32_MAX
) {
2974 return OFPERR_OFPMMFC_INVALID_METER
;
2977 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
2978 if (a
->type
== OFPACT_GROUP
2979 && !ofproto_group_exists(ofproto
, ofpact_get_GROUP(a
)->group_id
)) {
2980 return OFPERR_OFPBAC_BAD_OUT_GROUP
;
2988 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2990 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2991 struct ofputil_packet_out po
;
2992 struct ofpbuf
*payload
;
2993 uint64_t ofpacts_stub
[1024 / 8];
2994 struct ofpbuf ofpacts
;
2998 COVERAGE_INC(ofproto_packet_out
);
3000 error
= reject_slave_controller(ofconn
);
3005 /* Decode message. */
3006 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3007 error
= ofputil_decode_packet_out(&po
, oh
, &ofpacts
);
3009 goto exit_free_ofpacts
;
3011 if (ofp_to_u16(po
.in_port
) >= p
->max_ports
3012 && ofp_to_u16(po
.in_port
) < ofp_to_u16(OFPP_MAX
)) {
3013 error
= OFPERR_OFPBRC_BAD_PORT
;
3014 goto exit_free_ofpacts
;
3018 if (po
.buffer_id
!= UINT32_MAX
) {
3019 error
= ofconn_pktbuf_retrieve(ofconn
, po
.buffer_id
, &payload
, NULL
);
3020 if (error
|| !payload
) {
3021 goto exit_free_ofpacts
;
3024 /* Ensure that the L3 header is 32-bit aligned. */
3025 payload
= ofpbuf_clone_data_with_headroom(po
.packet
, po
.packet_len
, 2);
3028 /* Verify actions against packet, then send packet if successful. */
3029 flow_extract(payload
, NULL
, &flow
);
3030 flow
.in_port
.ofp_port
= po
.in_port
;
3031 error
= ofproto_check_ofpacts(p
, po
.ofpacts
, po
.ofpacts_len
);
3033 error
= p
->ofproto_class
->packet_out(p
, payload
, &flow
,
3034 po
.ofpacts
, po
.ofpacts_len
);
3036 ofpbuf_delete(payload
);
3039 ofpbuf_uninit(&ofpacts
);
3045 update_port_config(struct ofconn
*ofconn
, struct ofport
*port
,
3046 enum ofputil_port_config config
,
3047 enum ofputil_port_config mask
)
3049 enum ofputil_port_config toggle
= (config
^ port
->pp
.config
) & mask
;
3051 if (toggle
& OFPUTIL_PC_PORT_DOWN
3052 && (config
& OFPUTIL_PC_PORT_DOWN
3053 ? netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, NULL
)
3054 : netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, NULL
))) {
3055 /* We tried to bring the port up or down, but it failed, so don't
3056 * update the "down" bit. */
3057 toggle
&= ~OFPUTIL_PC_PORT_DOWN
;
3061 enum ofputil_port_config old_config
= port
->pp
.config
;
3062 port
->pp
.config
^= toggle
;
3063 port
->ofproto
->ofproto_class
->port_reconfigured(port
, old_config
);
3064 connmgr_send_port_status(port
->ofproto
->connmgr
, ofconn
, &port
->pp
,
3070 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3072 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
3073 struct ofputil_port_mod pm
;
3074 struct ofport
*port
;
3077 error
= reject_slave_controller(ofconn
);
3082 error
= ofputil_decode_port_mod(oh
, &pm
);
3087 port
= ofproto_get_port(p
, pm
.port_no
);
3089 return OFPERR_OFPPMFC_BAD_PORT
;
3090 } else if (!eth_addr_equals(port
->pp
.hw_addr
, pm
.hw_addr
)) {
3091 return OFPERR_OFPPMFC_BAD_HW_ADDR
;
3093 update_port_config(ofconn
, port
, pm
.config
, pm
.mask
);
3095 netdev_set_advertisements(port
->netdev
, pm
.advertise
);
3102 handle_desc_stats_request(struct ofconn
*ofconn
,
3103 const struct ofp_header
*request
)
3105 static const char *default_mfr_desc
= "Nicira, Inc.";
3106 static const char *default_hw_desc
= "Open vSwitch";
3107 static const char *default_sw_desc
= VERSION
;
3108 static const char *default_serial_desc
= "None";
3109 static const char *default_dp_desc
= "None";
3111 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
3112 struct ofp_desc_stats
*ods
;
3115 msg
= ofpraw_alloc_stats_reply(request
, 0);
3116 ods
= ofpbuf_put_zeros(msg
, sizeof *ods
);
3117 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
? p
->mfr_desc
: default_mfr_desc
,
3118 sizeof ods
->mfr_desc
);
3119 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
? p
->hw_desc
: default_hw_desc
,
3120 sizeof ods
->hw_desc
);
3121 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
? p
->sw_desc
: default_sw_desc
,
3122 sizeof ods
->sw_desc
);
3123 ovs_strlcpy(ods
->serial_num
,
3124 p
->serial_desc
? p
->serial_desc
: default_serial_desc
,
3125 sizeof ods
->serial_num
);
3126 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
? p
->dp_desc
: default_dp_desc
,
3127 sizeof ods
->dp_desc
);
3128 ofconn_send_reply(ofconn
, msg
);
3134 handle_table_stats_request(struct ofconn
*ofconn
,
3135 const struct ofp_header
*request
)
3137 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
3138 struct ofp12_table_stats
*ots
;
3143 /* Set up default values.
3145 * ofp12_table_stats is used as a generic structure as
3146 * it is able to hold all the fields for ofp10_table_stats
3147 * and ofp11_table_stats (and of course itself).
3149 ots
= xcalloc(p
->n_tables
, sizeof *ots
);
3150 for (i
= 0; i
< p
->n_tables
; i
++) {
3151 ots
[i
].table_id
= i
;
3152 sprintf(ots
[i
].name
, "table%"PRIuSIZE
, i
);
3153 ots
[i
].match
= htonll(OFPXMT13_MASK
);
3154 ots
[i
].wildcards
= htonll(OFPXMT13_MASK
);
3155 ots
[i
].write_actions
= htonl(OFPAT11_OUTPUT
);
3156 ots
[i
].apply_actions
= htonl(OFPAT11_OUTPUT
);
3157 ots
[i
].write_setfields
= htonll(OFPXMT13_MASK
);
3158 ots
[i
].apply_setfields
= htonll(OFPXMT13_MASK
);
3159 ots
[i
].metadata_match
= OVS_BE64_MAX
;
3160 ots
[i
].metadata_write
= OVS_BE64_MAX
;
3161 ots
[i
].instructions
= htonl(OFPIT11_ALL
);
3162 ots
[i
].config
= htonl(OFPTC11_TABLE_MISS_MASK
);
3163 ots
[i
].max_entries
= htonl(1000000); /* An arbitrary big number. */
3164 fat_rwlock_rdlock(&p
->tables
[i
].cls
.rwlock
);
3165 ots
[i
].active_count
= htonl(classifier_count(&p
->tables
[i
].cls
));
3166 fat_rwlock_unlock(&p
->tables
[i
].cls
.rwlock
);
3169 p
->ofproto_class
->get_tables(p
, ots
);
3171 /* Post-process the tables, dropping hidden tables. */
3172 n_tables
= p
->n_tables
;
3173 for (i
= 0; i
< p
->n_tables
; i
++) {
3174 const struct oftable
*table
= &p
->tables
[i
];
3176 if (table
->flags
& OFTABLE_HIDDEN
) {
3182 ovs_strzcpy(ots
[i
].name
, table
->name
, sizeof ots
[i
].name
);
3185 if (table
->max_flows
< ntohl(ots
[i
].max_entries
)) {
3186 ots
[i
].max_entries
= htonl(table
->max_flows
);
3190 msg
= ofputil_encode_table_stats_reply(ots
, n_tables
, request
);
3191 ofconn_send_reply(ofconn
, msg
);
3199 append_port_stat(struct ofport
*port
, struct list
*replies
)
3201 struct ofputil_port_stats ops
= { .port_no
= port
->pp
.port_no
};
3203 calc_duration(port
->created
, time_msec(),
3204 &ops
.duration_sec
, &ops
.duration_nsec
);
3206 /* Intentionally ignore return value, since errors will set
3207 * 'stats' to all-1s, which is correct for OpenFlow, and
3208 * netdev_get_stats() will log errors. */
3209 ofproto_port_get_stats(port
, &ops
.stats
);
3211 ofputil_append_port_stat(replies
, &ops
);
3215 handle_port_stats_request(struct ofconn
*ofconn
,
3216 const struct ofp_header
*request
)
3218 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
3219 struct ofport
*port
;
3220 struct list replies
;
3224 error
= ofputil_decode_port_stats_request(request
, &port_no
);
3229 ofpmp_init(&replies
, request
);
3230 if (port_no
!= OFPP_ANY
) {
3231 port
= ofproto_get_port(p
, port_no
);
3233 append_port_stat(port
, &replies
);
3236 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3237 append_port_stat(port
, &replies
);
3241 ofconn_send_replies(ofconn
, &replies
);
3246 handle_port_desc_stats_request(struct ofconn
*ofconn
,
3247 const struct ofp_header
*request
)
3249 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
3250 enum ofp_version version
;
3251 struct ofport
*port
;
3252 struct list replies
;
3254 ofpmp_init(&replies
, request
);
3256 version
= ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn
));
3257 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3258 ofputil_append_port_desc_stats_reply(version
, &port
->pp
, &replies
);
3261 ofconn_send_replies(ofconn
, &replies
);
3266 hash_cookie(ovs_be64 cookie
)
3268 return hash_uint64((OVS_FORCE
uint64_t)cookie
);
3272 cookies_insert(struct ofproto
*ofproto
, struct rule
*rule
)
3273 OVS_REQUIRES(ofproto_mutex
)
3275 hindex_insert(&ofproto
->cookies
, &rule
->cookie_node
,
3276 hash_cookie(rule
->flow_cookie
));
3280 cookies_remove(struct ofproto
*ofproto
, struct rule
*rule
)
3281 OVS_REQUIRES(ofproto_mutex
)
3283 hindex_remove(&ofproto
->cookies
, &rule
->cookie_node
);
3287 ofproto_rule_change_cookie(struct ofproto
*ofproto
, struct rule
*rule
,
3288 ovs_be64 new_cookie
)
3289 OVS_REQUIRES(ofproto_mutex
)
3291 if (new_cookie
!= rule
->flow_cookie
) {
3292 cookies_remove(ofproto
, rule
);
3294 ovs_mutex_lock(&rule
->mutex
);
3295 rule
->flow_cookie
= new_cookie
;
3296 ovs_mutex_unlock(&rule
->mutex
);
3298 cookies_insert(ofproto
, rule
);
3303 calc_duration(long long int start
, long long int now
,
3304 uint32_t *sec
, uint32_t *nsec
)
3306 long long int msecs
= now
- start
;
3307 *sec
= msecs
/ 1000;
3308 *nsec
= (msecs
% 1000) * (1000 * 1000);
3311 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3312 * true if 'table_id' is OK, false otherwise. */
3314 check_table_id(const struct ofproto
*ofproto
, uint8_t table_id
)
3316 return table_id
== OFPTT_ALL
|| table_id
< ofproto
->n_tables
;
3319 static struct oftable
*
3320 next_visible_table(const struct ofproto
*ofproto
, uint8_t table_id
)
3322 struct oftable
*table
;
3324 for (table
= &ofproto
->tables
[table_id
];
3325 table
< &ofproto
->tables
[ofproto
->n_tables
];
3327 if (!(table
->flags
& OFTABLE_HIDDEN
)) {
3335 static struct oftable
*
3336 first_matching_table(const struct ofproto
*ofproto
, uint8_t table_id
)
3338 if (table_id
== 0xff) {
3339 return next_visible_table(ofproto
, 0);
3340 } else if (table_id
< ofproto
->n_tables
) {
3341 return &ofproto
->tables
[table_id
];
3347 static struct oftable
*
3348 next_matching_table(const struct ofproto
*ofproto
,
3349 const struct oftable
*table
, uint8_t table_id
)
3351 return (table_id
== 0xff
3352 ? next_visible_table(ofproto
, (table
- ofproto
->tables
) + 1)
3356 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3358 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3359 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3361 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3362 * only once, for that table. (This can be used to access tables marked
3365 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3366 * entered at all. (Perhaps you should have validated TABLE_ID with
3367 * check_table_id().)
3369 * All parameters are evaluated multiple times.
3371 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3372 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3374 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3376 /* Initializes 'criteria' in a straightforward way based on the other
3379 * For "loose" matching, the 'priority' parameter is unimportant and may be
3382 rule_criteria_init(struct rule_criteria
*criteria
, uint8_t table_id
,
3383 const struct match
*match
, unsigned int priority
,
3384 ovs_be64 cookie
, ovs_be64 cookie_mask
,
3385 ofp_port_t out_port
, uint32_t out_group
)
3387 criteria
->table_id
= table_id
;
3388 cls_rule_init(&criteria
->cr
, match
, priority
);
3389 criteria
->cookie
= cookie
;
3390 criteria
->cookie_mask
= cookie_mask
;
3391 criteria
->out_port
= out_port
;
3392 criteria
->out_group
= out_group
;
3396 rule_criteria_destroy(struct rule_criteria
*criteria
)
3398 cls_rule_destroy(&criteria
->cr
);
3402 rule_collection_init(struct rule_collection
*rules
)
3404 rules
->rules
= rules
->stub
;
3406 rules
->capacity
= ARRAY_SIZE(rules
->stub
);
3410 rule_collection_add(struct rule_collection
*rules
, struct rule
*rule
)
3412 if (rules
->n
>= rules
->capacity
) {
3413 size_t old_size
, new_size
;
3415 old_size
= rules
->capacity
* sizeof *rules
->rules
;
3416 rules
->capacity
*= 2;
3417 new_size
= rules
->capacity
* sizeof *rules
->rules
;
3419 if (rules
->rules
== rules
->stub
) {
3420 rules
->rules
= xmalloc(new_size
);
3421 memcpy(rules
->rules
, rules
->stub
, old_size
);
3423 rules
->rules
= xrealloc(rules
->rules
, new_size
);
3427 rules
->rules
[rules
->n
++] = rule
;
3431 rule_collection_ref(struct rule_collection
*rules
)
3432 OVS_REQUIRES(ofproto_mutex
)
3436 for (i
= 0; i
< rules
->n
; i
++) {
3437 ofproto_rule_ref(rules
->rules
[i
]);
3442 rule_collection_unref(struct rule_collection
*rules
)
3446 for (i
= 0; i
< rules
->n
; i
++) {
3447 ofproto_rule_unref(rules
->rules
[i
]);
3452 rule_collection_destroy(struct rule_collection
*rules
)
3454 if (rules
->rules
!= rules
->stub
) {
3460 collect_rule(struct rule
*rule
, const struct rule_criteria
*c
,
3461 struct rule_collection
*rules
)
3462 OVS_REQUIRES(ofproto_mutex
)
3464 /* We ordinarily want to skip hidden rules, but there has to be a way for
3465 * code internal to OVS to modify and delete them, so if the criteria
3466 * specify a priority that can only be for a hidden flow, then allow hidden
3467 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3468 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3470 if (ofproto_rule_is_hidden(rule
) && c
->cr
.priority
<= UINT16_MAX
) {
3472 } else if (rule
->pending
) {
3473 return OFPROTO_POSTPONE
;
3475 if ((c
->table_id
== rule
->table_id
|| c
->table_id
== 0xff)
3476 && ofproto_rule_has_out_port(rule
, c
->out_port
)
3477 && ofproto_rule_has_out_group(rule
, c
->out_group
)
3478 && !((rule
->flow_cookie
^ c
->cookie
) & c
->cookie_mask
)) {
3479 rule_collection_add(rules
, rule
);
3485 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3486 * on classifiers rules are done in the "loose" way required for OpenFlow
3487 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3490 * Hidden rules are always omitted.
3492 * Returns 0 on success, otherwise an OpenFlow error code. */
3494 collect_rules_loose(struct ofproto
*ofproto
,
3495 const struct rule_criteria
*criteria
,
3496 struct rule_collection
*rules
)
3497 OVS_REQUIRES(ofproto_mutex
)
3499 struct oftable
*table
;
3500 enum ofperr error
= 0;
3502 rule_collection_init(rules
);
3504 if (!check_table_id(ofproto
, criteria
->table_id
)) {
3505 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
3509 if (criteria
->cookie_mask
== OVS_BE64_MAX
) {
3512 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
,
3513 hash_cookie(criteria
->cookie
),
3514 &ofproto
->cookies
) {
3515 if (cls_rule_is_loose_match(&rule
->cr
, &criteria
->cr
.match
)) {
3516 error
= collect_rule(rule
, criteria
, rules
);
3523 FOR_EACH_MATCHING_TABLE (table
, criteria
->table_id
, ofproto
) {
3524 struct cls_cursor cursor
;
3527 fat_rwlock_rdlock(&table
->cls
.rwlock
);
3528 cls_cursor_init(&cursor
, &table
->cls
, &criteria
->cr
);
3529 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3530 error
= collect_rule(rule
, criteria
, rules
);
3535 fat_rwlock_unlock(&table
->cls
.rwlock
);
3541 rule_collection_destroy(rules
);
3546 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3547 * on classifiers rules are done in the "strict" way required for OpenFlow
3548 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3549 * rules on list 'rules'.
3551 * Hidden rules are always omitted.
3553 * Returns 0 on success, otherwise an OpenFlow error code. */
3555 collect_rules_strict(struct ofproto
*ofproto
,
3556 const struct rule_criteria
*criteria
,
3557 struct rule_collection
*rules
)
3558 OVS_REQUIRES(ofproto_mutex
)
3560 struct oftable
*table
;
3563 rule_collection_init(rules
);
3565 if (!check_table_id(ofproto
, criteria
->table_id
)) {
3566 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
3570 if (criteria
->cookie_mask
== OVS_BE64_MAX
) {
3573 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
,
3574 hash_cookie(criteria
->cookie
),
3575 &ofproto
->cookies
) {
3576 if (cls_rule_equal(&rule
->cr
, &criteria
->cr
)) {
3577 error
= collect_rule(rule
, criteria
, rules
);
3584 FOR_EACH_MATCHING_TABLE (table
, criteria
->table_id
, ofproto
) {
3587 fat_rwlock_rdlock(&table
->cls
.rwlock
);
3588 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
3589 &table
->cls
, &criteria
->cr
));
3590 fat_rwlock_unlock(&table
->cls
.rwlock
);
3592 error
= collect_rule(rule
, criteria
, rules
);
3602 rule_collection_destroy(rules
);
3607 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3608 * forced into the range of a uint16_t. */
3610 age_secs(long long int age_ms
)
3612 return (age_ms
< 0 ? 0
3613 : age_ms
>= UINT16_MAX
* 1000 ? UINT16_MAX
3614 : (unsigned int) age_ms
/ 1000);
3618 handle_flow_stats_request(struct ofconn
*ofconn
,
3619 const struct ofp_header
*request
)
3620 OVS_EXCLUDED(ofproto_mutex
)
3622 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3623 struct ofputil_flow_stats_request fsr
;
3624 struct rule_criteria criteria
;
3625 struct rule_collection rules
;
3626 struct list replies
;
3630 error
= ofputil_decode_flow_stats_request(&fsr
, request
);
3635 rule_criteria_init(&criteria
, fsr
.table_id
, &fsr
.match
, 0, fsr
.cookie
,
3636 fsr
.cookie_mask
, fsr
.out_port
, fsr
.out_group
);
3638 ovs_mutex_lock(&ofproto_mutex
);
3639 error
= collect_rules_loose(ofproto
, &criteria
, &rules
);
3640 rule_criteria_destroy(&criteria
);
3642 rule_collection_ref(&rules
);
3644 ovs_mutex_unlock(&ofproto_mutex
);
3650 ofpmp_init(&replies
, request
);
3651 for (i
= 0; i
< rules
.n
; i
++) {
3652 struct rule
*rule
= rules
.rules
[i
];
3653 long long int now
= time_msec();
3654 struct ofputil_flow_stats fs
;
3655 long long int created
, used
, modified
;
3656 const struct rule_actions
*actions
;
3657 enum ofputil_flow_mod_flags flags
;
3659 ovs_mutex_lock(&rule
->mutex
);
3660 fs
.cookie
= rule
->flow_cookie
;
3661 fs
.idle_timeout
= rule
->idle_timeout
;
3662 fs
.hard_timeout
= rule
->hard_timeout
;
3663 created
= rule
->created
;
3664 modified
= rule
->modified
;
3665 actions
= rule_get_actions(rule
);
3666 flags
= rule
->flags
;
3667 ovs_mutex_unlock(&rule
->mutex
);
3669 ofproto
->ofproto_class
->rule_get_stats(rule
, &fs
.packet_count
,
3670 &fs
.byte_count
, &used
);
3672 minimatch_expand(&rule
->cr
.match
, &fs
.match
);
3673 fs
.table_id
= rule
->table_id
;
3674 calc_duration(created
, now
, &fs
.duration_sec
, &fs
.duration_nsec
);
3675 fs
.priority
= rule
->cr
.priority
;
3676 fs
.idle_age
= age_secs(now
- used
);
3677 fs
.hard_age
= age_secs(now
- modified
);
3678 fs
.ofpacts
= actions
->ofpacts
;
3679 fs
.ofpacts_len
= actions
->ofpacts_len
;
3682 ofputil_append_flow_stats_reply(&fs
, &replies
);
3685 rule_collection_unref(&rules
);
3686 rule_collection_destroy(&rules
);
3688 ofconn_send_replies(ofconn
, &replies
);
3694 flow_stats_ds(struct rule
*rule
, struct ds
*results
)
3696 uint64_t packet_count
, byte_count
;
3697 const struct rule_actions
*actions
;
3698 long long int created
, used
;
3700 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
, &packet_count
,
3701 &byte_count
, &used
);
3703 ovs_mutex_lock(&rule
->mutex
);
3704 actions
= rule_get_actions(rule
);
3705 created
= rule
->created
;
3706 ovs_mutex_unlock(&rule
->mutex
);
3708 if (rule
->table_id
!= 0) {
3709 ds_put_format(results
, "table_id=%"PRIu8
", ", rule
->table_id
);
3711 ds_put_format(results
, "duration=%llds, ", (time_msec() - created
) / 1000);
3712 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3713 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3714 cls_rule_format(&rule
->cr
, results
);
3715 ds_put_char(results
, ',');
3717 ds_put_cstr(results
, "actions=");
3718 ofpacts_format(actions
->ofpacts
, actions
->ofpacts_len
, results
);
3720 ds_put_cstr(results
, "\n");
3723 /* Adds a pretty-printed description of all flows to 'results', including
3724 * hidden flows (e.g., set up by in-band control). */
3726 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3728 struct oftable
*table
;
3730 OFPROTO_FOR_EACH_TABLE (table
, p
) {
3731 struct cls_cursor cursor
;
3734 fat_rwlock_rdlock(&table
->cls
.rwlock
);
3735 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
3736 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3737 flow_stats_ds(rule
, results
);
3739 fat_rwlock_unlock(&table
->cls
.rwlock
);
3743 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3744 * '*engine_type' and '*engine_id', respectively. */
3746 ofproto_get_netflow_ids(const struct ofproto
*ofproto
,
3747 uint8_t *engine_type
, uint8_t *engine_id
)
3749 ofproto
->ofproto_class
->get_netflow_ids(ofproto
, engine_type
, engine_id
);
3752 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
3753 * Returns 0 if the port's CFM status was successfully stored into
3754 * '*status'. Returns positive errno if the port did not have CFM
3755 * configured. Returns negative number if there is no status change
3756 * since last update.
3758 * The caller must provide and own '*status', and must free 'status->rmps'.
3759 * '*status' is indeterminate if the return value is non-zero. */
3761 ofproto_port_get_cfm_status(const struct ofproto
*ofproto
, ofp_port_t ofp_port
,
3762 struct ofproto_cfm_status
*status
)
3764 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
3765 return (ofport
&& ofproto
->ofproto_class
->get_cfm_status
3766 ? ofproto
->ofproto_class
->get_cfm_status(ofport
, status
)
3771 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3772 const struct ofp_header
*oh
)
3773 OVS_EXCLUDED(ofproto_mutex
)
3775 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3776 struct ofputil_flow_stats_request request
;
3777 struct ofputil_aggregate_stats stats
;
3778 bool unknown_packets
, unknown_bytes
;
3779 struct rule_criteria criteria
;
3780 struct rule_collection rules
;
3781 struct ofpbuf
*reply
;
3785 error
= ofputil_decode_flow_stats_request(&request
, oh
);
3790 rule_criteria_init(&criteria
, request
.table_id
, &request
.match
, 0,
3791 request
.cookie
, request
.cookie_mask
,
3792 request
.out_port
, request
.out_group
);
3794 ovs_mutex_lock(&ofproto_mutex
);
3795 error
= collect_rules_loose(ofproto
, &criteria
, &rules
);
3796 rule_criteria_destroy(&criteria
);
3798 rule_collection_ref(&rules
);
3800 ovs_mutex_unlock(&ofproto_mutex
);
3806 memset(&stats
, 0, sizeof stats
);
3807 unknown_packets
= unknown_bytes
= false;
3808 for (i
= 0; i
< rules
.n
; i
++) {
3809 struct rule
*rule
= rules
.rules
[i
];
3810 uint64_t packet_count
;
3811 uint64_t byte_count
;
3814 ofproto
->ofproto_class
->rule_get_stats(rule
, &packet_count
,
3815 &byte_count
, &used
);
3817 if (packet_count
== UINT64_MAX
) {
3818 unknown_packets
= true;
3820 stats
.packet_count
+= packet_count
;
3823 if (byte_count
== UINT64_MAX
) {
3824 unknown_bytes
= true;
3826 stats
.byte_count
+= byte_count
;
3831 if (unknown_packets
) {
3832 stats
.packet_count
= UINT64_MAX
;
3834 if (unknown_bytes
) {
3835 stats
.byte_count
= UINT64_MAX
;
3838 rule_collection_unref(&rules
);
3839 rule_collection_destroy(&rules
);
3841 reply
= ofputil_encode_aggregate_stats_reply(&stats
, oh
);
3842 ofconn_send_reply(ofconn
, reply
);
3847 struct queue_stats_cbdata
{
3848 struct ofport
*ofport
;
3849 struct list replies
;
3854 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3855 const struct netdev_queue_stats
*stats
)
3857 struct ofputil_queue_stats oqs
;
3859 oqs
.port_no
= cbdata
->ofport
->pp
.port_no
;
3860 oqs
.queue_id
= queue_id
;
3861 oqs
.tx_bytes
= stats
->tx_bytes
;
3862 oqs
.tx_packets
= stats
->tx_packets
;
3863 oqs
.tx_errors
= stats
->tx_errors
;
3864 if (stats
->created
!= LLONG_MIN
) {
3865 calc_duration(stats
->created
, cbdata
->now
,
3866 &oqs
.duration_sec
, &oqs
.duration_nsec
);
3868 oqs
.duration_sec
= oqs
.duration_nsec
= UINT32_MAX
;
3870 ofputil_append_queue_stat(&cbdata
->replies
, &oqs
);
3874 handle_queue_stats_dump_cb(uint32_t queue_id
,
3875 struct netdev_queue_stats
*stats
,
3878 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3880 put_queue_stats(cbdata
, queue_id
, stats
);
3884 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3885 struct queue_stats_cbdata
*cbdata
)
3887 cbdata
->ofport
= port
;
3888 if (queue_id
== OFPQ_ALL
) {
3889 netdev_dump_queue_stats(port
->netdev
,
3890 handle_queue_stats_dump_cb
, cbdata
);
3892 struct netdev_queue_stats stats
;
3894 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3895 put_queue_stats(cbdata
, queue_id
, &stats
);
3897 return OFPERR_OFPQOFC_BAD_QUEUE
;
3904 handle_queue_stats_request(struct ofconn
*ofconn
,
3905 const struct ofp_header
*rq
)
3907 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3908 struct queue_stats_cbdata cbdata
;
3909 struct ofport
*port
;
3911 struct ofputil_queue_stats_request oqsr
;
3913 COVERAGE_INC(ofproto_queue_req
);
3915 ofpmp_init(&cbdata
.replies
, rq
);
3916 cbdata
.now
= time_msec();
3918 error
= ofputil_decode_queue_stats_request(rq
, &oqsr
);
3923 if (oqsr
.port_no
== OFPP_ANY
) {
3924 error
= OFPERR_OFPQOFC_BAD_QUEUE
;
3925 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3926 if (!handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)) {
3931 port
= ofproto_get_port(ofproto
, oqsr
.port_no
);
3933 ? handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)
3934 : OFPERR_OFPQOFC_BAD_PORT
);
3937 ofconn_send_replies(ofconn
, &cbdata
.replies
);
3939 ofpbuf_list_delete(&cbdata
.replies
);
3946 is_flow_deletion_pending(const struct ofproto
*ofproto
,
3947 const struct cls_rule
*cls_rule
,
3949 OVS_REQUIRES(ofproto_mutex
)
3951 if (!hmap_is_empty(&ofproto
->deletions
)) {
3952 struct ofoperation
*op
;
3954 HMAP_FOR_EACH_WITH_HASH (op
, hmap_node
,
3955 cls_rule_hash(cls_rule
, table_id
),
3956 &ofproto
->deletions
) {
3957 if (cls_rule_equal(cls_rule
, &op
->rule
->cr
)) {
3967 should_evict_a_rule(struct oftable
*table
, unsigned int extra_space
)
3968 OVS_REQUIRES(ofproto_mutex
)
3969 OVS_NO_THREAD_SAFETY_ANALYSIS
3971 return classifier_count(&table
->cls
) + extra_space
> table
->max_flows
;
3975 evict_rules_from_table(struct ofproto
*ofproto
, struct oftable
*table
,
3976 unsigned int extra_space
)
3977 OVS_REQUIRES(ofproto_mutex
)
3979 while (should_evict_a_rule(table
, extra_space
)) {
3982 if (!choose_rule_to_evict(table
, &rule
)) {
3983 return OFPERR_OFPFMFC_TABLE_FULL
;
3984 } else if (rule
->pending
) {
3985 return OFPROTO_POSTPONE
;
3987 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
3988 delete_flow__(rule
, group
, OFPRR_EVICTION
);
3989 ofopgroup_submit(group
);
3996 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3997 * in which no matching flow already exists in the flow table.
3999 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
4000 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
4001 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
4002 * initiated now but may be retried later.
4004 * The caller retains ownership of 'fm->ofpacts'.
4006 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
4009 add_flow(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4010 struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
)
4011 OVS_REQUIRES(ofproto_mutex
)
4013 struct oftable
*table
;
4019 if (!check_table_id(ofproto
, fm
->table_id
)) {
4020 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
4025 if (fm
->table_id
== 0xff) {
4026 if (ofproto
->ofproto_class
->rule_choose_table
) {
4027 error
= ofproto
->ofproto_class
->rule_choose_table(ofproto
,
4033 ovs_assert(table_id
< ofproto
->n_tables
);
4037 } else if (fm
->table_id
< ofproto
->n_tables
) {
4038 table_id
= fm
->table_id
;
4040 return OFPERR_OFPBRC_BAD_TABLE_ID
;
4043 table
= &ofproto
->tables
[table_id
];
4045 if (!oftable_is_modifiable(table
, fm
->flags
)) {
4046 return OFPERR_OFPBRC_EPERM
;
4049 if (!(fm
->flags
& OFPUTIL_FF_HIDDEN_FIELDS
)) {
4050 if (!match_has_default_hidden_fields(&fm
->match
)) {
4051 VLOG_WARN_RL(&rl
, "%s: (add_flow) only internal flows can set "
4052 "non-default values to hidden fields", ofproto
->name
);
4053 return OFPERR_OFPBRC_EPERM
;
4057 cls_rule_init(&cr
, &fm
->match
, fm
->priority
);
4059 /* Transform "add" into "modify" if there's an existing identical flow. */
4060 fat_rwlock_rdlock(&table
->cls
.rwlock
);
4061 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
, &cr
));
4062 fat_rwlock_unlock(&table
->cls
.rwlock
);
4064 cls_rule_destroy(&cr
);
4065 if (!rule_is_modifiable(rule
, fm
->flags
)) {
4066 return OFPERR_OFPBRC_EPERM
;
4067 } else if (rule
->pending
) {
4068 return OFPROTO_POSTPONE
;
4070 struct rule_collection rules
;
4072 rule_collection_init(&rules
);
4073 rule_collection_add(&rules
, rule
);
4074 fm
->modify_cookie
= true;
4075 error
= modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
);
4076 rule_collection_destroy(&rules
);
4082 /* Serialize against pending deletion. */
4083 if (is_flow_deletion_pending(ofproto
, &cr
, table_id
)) {
4084 cls_rule_destroy(&cr
);
4085 return OFPROTO_POSTPONE
;
4088 /* Check for overlap, if requested. */
4089 if (fm
->flags
& OFPUTIL_FF_CHECK_OVERLAP
) {
4092 fat_rwlock_rdlock(&table
->cls
.rwlock
);
4093 overlaps
= classifier_rule_overlaps(&table
->cls
, &cr
);
4094 fat_rwlock_unlock(&table
->cls
.rwlock
);
4097 cls_rule_destroy(&cr
);
4098 return OFPERR_OFPFMFC_OVERLAP
;
4102 /* If necessary, evict an existing rule to clear out space. */
4103 error
= evict_rules_from_table(ofproto
, table
, 1);
4105 cls_rule_destroy(&cr
);
4109 /* Allocate new rule. */
4110 rule
= ofproto
->ofproto_class
->rule_alloc();
4112 cls_rule_destroy(&cr
);
4113 VLOG_WARN_RL(&rl
, "%s: failed to create rule (%s)",
4114 ofproto
->name
, ovs_strerror(error
));
4118 /* Initialize base state. */
4119 *CONST_CAST(struct ofproto
**, &rule
->ofproto
) = ofproto
;
4120 cls_rule_move(CONST_CAST(struct cls_rule
*, &rule
->cr
), &cr
);
4121 ovs_refcount_init(&rule
->ref_count
);
4122 rule
->pending
= NULL
;
4123 rule
->flow_cookie
= fm
->new_cookie
;
4124 rule
->created
= rule
->modified
= time_msec();
4126 ovs_mutex_init(&rule
->mutex
);
4127 ovs_mutex_lock(&rule
->mutex
);
4128 rule
->idle_timeout
= fm
->idle_timeout
;
4129 rule
->hard_timeout
= fm
->hard_timeout
;
4130 ovs_mutex_unlock(&rule
->mutex
);
4132 *CONST_CAST(uint8_t *, &rule
->table_id
) = table
- ofproto
->tables
;
4133 rule
->flags
= fm
->flags
& OFPUTIL_FF_STATE
;
4134 ovsrcu_set(&rule
->actions
,
4135 rule_actions_create(ofproto
, fm
->ofpacts
, fm
->ofpacts_len
));
4136 list_init(&rule
->meter_list_node
);
4137 rule
->eviction_group
= NULL
;
4138 list_init(&rule
->expirable
);
4139 rule
->monitor_flags
= 0;
4140 rule
->add_seqno
= 0;
4141 rule
->modify_seqno
= 0;
4143 /* Construct rule, initializing derived state. */
4144 error
= ofproto
->ofproto_class
->rule_construct(rule
);
4146 ofproto_rule_destroy__(rule
);
4151 do_add_flow(ofproto
, ofconn
, request
, fm
->buffer_id
, rule
);
4157 do_add_flow(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4158 const struct ofp_header
*request
, uint32_t buffer_id
,
4160 OVS_REQUIRES(ofproto_mutex
)
4162 struct ofopgroup
*group
;
4164 oftable_insert_rule(rule
);
4166 group
= ofopgroup_create(ofproto
, ofconn
, request
, buffer_id
);
4167 ofoperation_create(group
, rule
, OFOPERATION_ADD
, 0);
4168 ofproto
->ofproto_class
->rule_insert(rule
);
4169 ofopgroup_submit(group
);
4172 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4174 /* Modifies the rules listed in 'rules', changing their actions to match those
4177 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4180 * Returns 0 on success, otherwise an OpenFlow error code. */
4182 modify_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4183 struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
,
4184 const struct rule_collection
*rules
)
4185 OVS_REQUIRES(ofproto_mutex
)
4187 enum ofoperation_type type
;
4188 struct ofopgroup
*group
;
4192 type
= fm
->command
== OFPFC_ADD
? OFOPERATION_REPLACE
: OFOPERATION_MODIFY
;
4193 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
4194 error
= OFPERR_OFPBRC_EPERM
;
4195 for (i
= 0; i
< rules
->n
; i
++) {
4196 struct rule
*rule
= rules
->rules
[i
];
4197 const struct rule_actions
*actions
;
4198 struct ofoperation
*op
;
4199 bool actions_changed
;
4200 bool reset_counters
;
4202 /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */
4204 if (rule_is_modifiable(rule
, fm
->flags
)) {
4205 /* At least one rule is modifiable, don't report EPERM error. */
4211 actions
= rule_get_actions(rule
);
4212 actions_changed
= !ofpacts_equal(fm
->ofpacts
, fm
->ofpacts_len
,
4214 actions
->ofpacts_len
);
4216 op
= ofoperation_create(group
, rule
, type
, 0);
4218 if (fm
->modify_cookie
&& fm
->new_cookie
!= OVS_BE64_MAX
) {
4219 ofproto_rule_change_cookie(ofproto
, rule
, fm
->new_cookie
);
4221 if (type
== OFOPERATION_REPLACE
) {
4222 ovs_mutex_lock(&rule
->mutex
);
4223 rule
->idle_timeout
= fm
->idle_timeout
;
4224 rule
->hard_timeout
= fm
->hard_timeout
;
4225 ovs_mutex_unlock(&rule
->mutex
);
4227 rule
->flags
= fm
->flags
& OFPUTIL_FF_STATE
;
4228 if (fm
->idle_timeout
|| fm
->hard_timeout
) {
4229 if (!rule
->eviction_group
) {
4230 eviction_group_add_rule(rule
);
4233 eviction_group_remove_rule(rule
);
4237 reset_counters
= (fm
->flags
& OFPUTIL_FF_RESET_COUNTS
) != 0;
4238 if (actions_changed
|| reset_counters
) {
4239 const struct rule_actions
*new_actions
;
4241 op
->actions
= rule_get_actions(rule
);
4242 new_actions
= rule_actions_create(ofproto
,
4243 fm
->ofpacts
, fm
->ofpacts_len
);
4245 ovsrcu_set(&rule
->actions
, new_actions
);
4247 rule
->ofproto
->ofproto_class
->rule_modify_actions(rule
,
4250 ofoperation_complete(op
, 0);
4253 ofopgroup_submit(group
);
4259 modify_flows_add(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4260 struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
)
4261 OVS_REQUIRES(ofproto_mutex
)
4263 if (fm
->cookie_mask
!= htonll(0) || fm
->new_cookie
== OVS_BE64_MAX
) {
4266 return add_flow(ofproto
, ofconn
, fm
, request
);
4269 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4272 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4275 modify_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4276 struct ofputil_flow_mod
*fm
,
4277 const struct ofp_header
*request
)
4278 OVS_REQUIRES(ofproto_mutex
)
4280 struct rule_criteria criteria
;
4281 struct rule_collection rules
;
4284 rule_criteria_init(&criteria
, fm
->table_id
, &fm
->match
, 0,
4285 fm
->cookie
, fm
->cookie_mask
, OFPP_ANY
, OFPG11_ANY
);
4286 error
= collect_rules_loose(ofproto
, &criteria
, &rules
);
4287 rule_criteria_destroy(&criteria
);
4290 error
= (rules
.n
> 0
4291 ? modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
)
4292 : modify_flows_add(ofproto
, ofconn
, fm
, request
));
4295 rule_collection_destroy(&rules
);
4300 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4303 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4306 modify_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4307 struct ofputil_flow_mod
*fm
,
4308 const struct ofp_header
*request
)
4309 OVS_REQUIRES(ofproto_mutex
)
4311 struct rule_criteria criteria
;
4312 struct rule_collection rules
;
4315 rule_criteria_init(&criteria
, fm
->table_id
, &fm
->match
, fm
->priority
,
4316 fm
->cookie
, fm
->cookie_mask
, OFPP_ANY
, OFPG11_ANY
);
4317 error
= collect_rules_strict(ofproto
, &criteria
, &rules
);
4318 rule_criteria_destroy(&criteria
);
4322 error
= modify_flows_add(ofproto
, ofconn
, fm
, request
);
4323 } else if (rules
.n
== 1) {
4324 error
= modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
);
4328 rule_collection_destroy(&rules
);
4333 /* OFPFC_DELETE implementation. */
4336 delete_flow__(struct rule
*rule
, struct ofopgroup
*group
,
4337 enum ofp_flow_removed_reason reason
)
4338 OVS_REQUIRES(ofproto_mutex
)
4340 struct ofproto
*ofproto
= rule
->ofproto
;
4342 ofproto_rule_send_removed(rule
, reason
);
4344 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, reason
);
4345 oftable_remove_rule(rule
);
4346 ofproto
->ofproto_class
->rule_delete(rule
);
4349 /* Deletes the rules listed in 'rules'.
4351 * Returns 0 on success, otherwise an OpenFlow error code. */
4353 delete_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4354 const struct ofp_header
*request
,
4355 const struct rule_collection
*rules
,
4356 enum ofp_flow_removed_reason reason
)
4357 OVS_REQUIRES(ofproto_mutex
)
4359 struct ofopgroup
*group
;
4362 group
= ofopgroup_create(ofproto
, ofconn
, request
, UINT32_MAX
);
4363 for (i
= 0; i
< rules
->n
; i
++) {
4364 delete_flow__(rules
->rules
[i
], group
, reason
);
4366 ofopgroup_submit(group
);
4371 /* Implements OFPFC_DELETE. */
4373 delete_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4374 const struct ofputil_flow_mod
*fm
,
4375 const struct ofp_header
*request
)
4376 OVS_REQUIRES(ofproto_mutex
)
4378 struct rule_criteria criteria
;
4379 struct rule_collection rules
;
4382 rule_criteria_init(&criteria
, fm
->table_id
, &fm
->match
, 0,
4383 fm
->cookie
, fm
->cookie_mask
,
4384 fm
->out_port
, fm
->out_group
);
4385 error
= collect_rules_loose(ofproto
, &criteria
, &rules
);
4386 rule_criteria_destroy(&criteria
);
4388 if (!error
&& rules
.n
> 0) {
4389 error
= delete_flows__(ofproto
, ofconn
, request
, &rules
, OFPRR_DELETE
);
4391 rule_collection_destroy(&rules
);
4396 /* Implements OFPFC_DELETE_STRICT. */
4398 delete_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4399 const struct ofputil_flow_mod
*fm
,
4400 const struct ofp_header
*request
)
4401 OVS_REQUIRES(ofproto_mutex
)
4403 struct rule_criteria criteria
;
4404 struct rule_collection rules
;
4407 rule_criteria_init(&criteria
, fm
->table_id
, &fm
->match
, fm
->priority
,
4408 fm
->cookie
, fm
->cookie_mask
,
4409 fm
->out_port
, fm
->out_group
);
4410 error
= collect_rules_strict(ofproto
, &criteria
, &rules
);
4411 rule_criteria_destroy(&criteria
);
4413 if (!error
&& rules
.n
> 0) {
4414 error
= delete_flows__(ofproto
, ofconn
, request
, &rules
, OFPRR_DELETE
);
4416 rule_collection_destroy(&rules
);
4422 ofproto_rule_send_removed(struct rule
*rule
, uint8_t reason
)
4423 OVS_REQUIRES(ofproto_mutex
)
4425 struct ofputil_flow_removed fr
;
4428 if (ofproto_rule_is_hidden(rule
) ||
4429 !(rule
->flags
& OFPUTIL_FF_SEND_FLOW_REM
)) {
4433 minimatch_expand(&rule
->cr
.match
, &fr
.match
);
4434 fr
.priority
= rule
->cr
.priority
;
4435 fr
.cookie
= rule
->flow_cookie
;
4437 fr
.table_id
= rule
->table_id
;
4438 calc_duration(rule
->created
, time_msec(),
4439 &fr
.duration_sec
, &fr
.duration_nsec
);
4440 ovs_mutex_lock(&rule
->mutex
);
4441 fr
.idle_timeout
= rule
->idle_timeout
;
4442 fr
.hard_timeout
= rule
->hard_timeout
;
4443 ovs_mutex_unlock(&rule
->mutex
);
4444 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
, &fr
.packet_count
,
4445 &fr
.byte_count
, &used
);
4447 connmgr_send_flow_removed(rule
->ofproto
->connmgr
, &fr
);
4450 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4451 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4454 * 'rule' must not have a pending operation (that is, 'rule->pending' must be
4457 * ofproto implementation ->run() functions should use this function to expire
4458 * OpenFlow flows. */
4460 ofproto_rule_expire(struct rule
*rule
, uint8_t reason
)
4461 OVS_REQUIRES(ofproto_mutex
)
4463 struct ofproto
*ofproto
= rule
->ofproto
;
4465 ovs_assert(reason
== OFPRR_HARD_TIMEOUT
|| reason
== OFPRR_IDLE_TIMEOUT
4466 || reason
== OFPRR_DELETE
|| reason
== OFPRR_GROUP_DELETE
);
4468 ofproto_rule_delete__(ofproto
, rule
, reason
);
4471 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4472 * means "infinite". */
4474 reduce_timeout(uint16_t max
, uint16_t *timeout
)
4476 if (max
&& (!*timeout
|| *timeout
> max
)) {
4481 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
4482 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
4483 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
4485 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
4487 ofproto_rule_reduce_timeouts(struct rule
*rule
,
4488 uint16_t idle_timeout
, uint16_t hard_timeout
)
4489 OVS_EXCLUDED(ofproto_mutex
, rule
->mutex
)
4491 if (!idle_timeout
&& !hard_timeout
) {
4495 ovs_mutex_lock(&ofproto_mutex
);
4496 if (list_is_empty(&rule
->expirable
)) {
4497 list_insert(&rule
->ofproto
->expirable
, &rule
->expirable
);
4499 ovs_mutex_unlock(&ofproto_mutex
);
4501 ovs_mutex_lock(&rule
->mutex
);
4502 reduce_timeout(idle_timeout
, &rule
->idle_timeout
);
4503 reduce_timeout(hard_timeout
, &rule
->hard_timeout
);
4504 ovs_mutex_unlock(&rule
->mutex
);
4508 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4509 OVS_EXCLUDED(ofproto_mutex
)
4511 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
4512 struct ofputil_flow_mod fm
;
4513 uint64_t ofpacts_stub
[1024 / 8];
4514 struct ofpbuf ofpacts
;
4518 error
= reject_slave_controller(ofconn
);
4523 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
4524 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn_get_protocol(ofconn
),
4526 u16_to_ofp(ofproto
->max_ports
),
4529 error
= ofproto_check_ofpacts(ofproto
, fm
.ofpacts
, fm
.ofpacts_len
);
4532 error
= handle_flow_mod__(ofproto
, ofconn
, &fm
, oh
);
4535 goto exit_free_ofpacts
;
4538 /* Record the operation for logging a summary report. */
4539 switch (fm
.command
) {
4545 case OFPFC_MODIFY_STRICT
:
4546 ofproto
->n_modify
++;
4550 case OFPFC_DELETE_STRICT
:
4551 ofproto
->n_delete
++;
4556 if (ofproto
->next_op_report
== LLONG_MAX
) {
4557 ofproto
->first_op
= now
;
4558 ofproto
->next_op_report
= MAX(now
+ 10 * 1000,
4559 ofproto
->op_backoff
);
4560 ofproto
->op_backoff
= ofproto
->next_op_report
+ 60 * 1000;
4562 ofproto
->last_op
= now
;
4565 ofpbuf_uninit(&ofpacts
);
4571 handle_flow_mod__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4572 struct ofputil_flow_mod
*fm
, const struct ofp_header
*oh
)
4573 OVS_EXCLUDED(ofproto_mutex
)
4577 ovs_mutex_lock(&ofproto_mutex
);
4578 if (ofproto
->n_pending
< 50) {
4579 switch (fm
->command
) {
4581 error
= add_flow(ofproto
, ofconn
, fm
, oh
);
4585 error
= modify_flows_loose(ofproto
, ofconn
, fm
, oh
);
4588 case OFPFC_MODIFY_STRICT
:
4589 error
= modify_flow_strict(ofproto
, ofconn
, fm
, oh
);
4593 error
= delete_flows_loose(ofproto
, ofconn
, fm
, oh
);
4596 case OFPFC_DELETE_STRICT
:
4597 error
= delete_flow_strict(ofproto
, ofconn
, fm
, oh
);
4601 if (fm
->command
> 0xff) {
4602 VLOG_WARN_RL(&rl
, "%s: flow_mod has explicit table_id but "
4603 "flow_mod_table_id extension is not enabled",
4606 error
= OFPERR_OFPFMFC_BAD_COMMAND
;
4610 ovs_assert(!list_is_empty(&ofproto
->pending
));
4611 error
= OFPROTO_POSTPONE
;
4613 ovs_mutex_unlock(&ofproto_mutex
);
4615 run_rule_executes(ofproto
);
4620 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4622 struct ofputil_role_request request
;
4623 struct ofputil_role_request reply
;
4627 error
= ofputil_decode_role_message(oh
, &request
);
4632 if (request
.role
!= OFPCR12_ROLE_NOCHANGE
) {
4633 if (ofconn_get_role(ofconn
) != request
.role
4634 && ofconn_has_pending_opgroups(ofconn
)) {
4635 return OFPROTO_POSTPONE
;
4638 if (request
.have_generation_id
4639 && !ofconn_set_master_election_id(ofconn
, request
.generation_id
)) {
4640 return OFPERR_OFPRRFC_STALE
;
4643 ofconn_set_role(ofconn
, request
.role
);
4646 reply
.role
= ofconn_get_role(ofconn
);
4647 reply
.have_generation_id
= ofconn_get_master_election_id(
4648 ofconn
, &reply
.generation_id
);
4649 buf
= ofputil_encode_role_reply(oh
, &reply
);
4650 ofconn_send_reply(ofconn
, buf
);
4656 handle_nxt_flow_mod_table_id(struct ofconn
*ofconn
,
4657 const struct ofp_header
*oh
)
4659 const struct nx_flow_mod_table_id
*msg
= ofpmsg_body(oh
);
4660 enum ofputil_protocol cur
, next
;
4662 cur
= ofconn_get_protocol(ofconn
);
4663 next
= ofputil_protocol_set_tid(cur
, msg
->set
!= 0);
4664 ofconn_set_protocol(ofconn
, next
);
4670 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4672 const struct nx_set_flow_format
*msg
= ofpmsg_body(oh
);
4673 enum ofputil_protocol cur
, next
;
4674 enum ofputil_protocol next_base
;
4676 next_base
= ofputil_nx_flow_format_to_protocol(ntohl(msg
->format
));
4678 return OFPERR_OFPBRC_EPERM
;
4681 cur
= ofconn_get_protocol(ofconn
);
4682 next
= ofputil_protocol_set_base(cur
, next_base
);
4683 if (cur
!= next
&& ofconn_has_pending_opgroups(ofconn
)) {
4684 /* Avoid sending async messages in surprising protocol. */
4685 return OFPROTO_POSTPONE
;
4688 ofconn_set_protocol(ofconn
, next
);
4693 handle_nxt_set_packet_in_format(struct ofconn
*ofconn
,
4694 const struct ofp_header
*oh
)
4696 const struct nx_set_packet_in_format
*msg
= ofpmsg_body(oh
);
4699 format
= ntohl(msg
->format
);
4700 if (format
!= NXPIF_OPENFLOW10
&& format
!= NXPIF_NXM
) {
4701 return OFPERR_OFPBRC_EPERM
;
4704 if (format
!= ofconn_get_packet_in_format(ofconn
)
4705 && ofconn_has_pending_opgroups(ofconn
)) {
4706 /* Avoid sending async message in surprsing packet in format. */
4707 return OFPROTO_POSTPONE
;
4710 ofconn_set_packet_in_format(ofconn
, format
);
4715 handle_nxt_set_async_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4717 const struct nx_async_config
*msg
= ofpmsg_body(oh
);
4718 uint32_t master
[OAM_N_TYPES
];
4719 uint32_t slave
[OAM_N_TYPES
];
4721 master
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[0]);
4722 master
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[0]);
4723 master
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[0]);
4725 slave
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[1]);
4726 slave
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[1]);
4727 slave
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[1]);
4729 ofconn_set_async_config(ofconn
, master
, slave
);
4730 if (ofconn_get_type(ofconn
) == OFCONN_SERVICE
&&
4731 !ofconn_get_miss_send_len(ofconn
)) {
4732 ofconn_set_miss_send_len(ofconn
, OFP_DEFAULT_MISS_SEND_LEN
);
4739 handle_nxt_get_async_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4742 uint32_t master
[OAM_N_TYPES
];
4743 uint32_t slave
[OAM_N_TYPES
];
4744 struct nx_async_config
*msg
;
4746 ofconn_get_async_config(ofconn
, master
, slave
);
4747 buf
= ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY
, oh
, 0);
4748 msg
= ofpbuf_put_zeros(buf
, sizeof *msg
);
4750 msg
->packet_in_mask
[0] = htonl(master
[OAM_PACKET_IN
]);
4751 msg
->port_status_mask
[0] = htonl(master
[OAM_PORT_STATUS
]);
4752 msg
->flow_removed_mask
[0] = htonl(master
[OAM_FLOW_REMOVED
]);
4754 msg
->packet_in_mask
[1] = htonl(slave
[OAM_PACKET_IN
]);
4755 msg
->port_status_mask
[1] = htonl(slave
[OAM_PORT_STATUS
]);
4756 msg
->flow_removed_mask
[1] = htonl(slave
[OAM_FLOW_REMOVED
]);
4758 ofconn_send_reply(ofconn
, buf
);
4764 handle_nxt_set_controller_id(struct ofconn
*ofconn
,
4765 const struct ofp_header
*oh
)
4767 const struct nx_controller_id
*nci
= ofpmsg_body(oh
);
4769 if (!is_all_zeros(nci
->zero
, sizeof nci
->zero
)) {
4770 return OFPERR_NXBRC_MUST_BE_ZERO
;
4773 ofconn_set_controller_id(ofconn
, ntohs(nci
->controller_id
));
4778 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4782 if (ofconn_has_pending_opgroups(ofconn
)) {
4783 return OFPROTO_POSTPONE
;
4786 buf
= ofpraw_alloc_reply((oh
->version
== OFP10_VERSION
4787 ? OFPRAW_OFPT10_BARRIER_REPLY
4788 : OFPRAW_OFPT11_BARRIER_REPLY
), oh
, 0);
4789 ofconn_send_reply(ofconn
, buf
);
4794 ofproto_compose_flow_refresh_update(const struct rule
*rule
,
4795 enum nx_flow_monitor_flags flags
,
4797 OVS_REQUIRES(ofproto_mutex
)
4799 struct ofoperation
*op
= rule
->pending
;
4800 const struct rule_actions
*actions
;
4801 struct ofputil_flow_update fu
;
4804 if (op
&& op
->type
== OFOPERATION_ADD
) {
4805 /* We'll report the final flow when the operation completes. Reporting
4806 * it now would cause a duplicate report later. */
4810 fu
.event
= (flags
& (NXFMF_INITIAL
| NXFMF_ADD
)
4811 ? NXFME_ADDED
: NXFME_MODIFIED
);
4813 ovs_mutex_lock(&rule
->mutex
);
4814 fu
.idle_timeout
= rule
->idle_timeout
;
4815 fu
.hard_timeout
= rule
->hard_timeout
;
4816 ovs_mutex_unlock(&rule
->mutex
);
4817 fu
.table_id
= rule
->table_id
;
4818 fu
.cookie
= rule
->flow_cookie
;
4819 minimatch_expand(&rule
->cr
.match
, &match
);
4821 fu
.priority
= rule
->cr
.priority
;
4823 if (!(flags
& NXFMF_ACTIONS
)) {
4826 actions
= rule_get_actions(rule
);
4828 /* An operation is in progress. Use the previous version of the flow's
4829 * actions, so that when the operation commits we report the change. */
4831 case OFOPERATION_ADD
:
4834 case OFOPERATION_MODIFY
:
4835 case OFOPERATION_REPLACE
:
4836 actions
= op
->actions
? op
->actions
: rule_get_actions(rule
);
4839 case OFOPERATION_DELETE
:
4840 actions
= rule_get_actions(rule
);
4847 fu
.ofpacts
= actions
? actions
->ofpacts
: NULL
;
4848 fu
.ofpacts_len
= actions
? actions
->ofpacts_len
: 0;
4850 if (list_is_empty(msgs
)) {
4851 ofputil_start_flow_update(msgs
);
4853 ofputil_append_flow_update(&fu
, msgs
);
4857 ofmonitor_compose_refresh_updates(struct rule_collection
*rules
,
4859 OVS_REQUIRES(ofproto_mutex
)
4863 for (i
= 0; i
< rules
->n
; i
++) {
4864 struct rule
*rule
= rules
->rules
[i
];
4865 enum nx_flow_monitor_flags flags
= rule
->monitor_flags
;
4866 rule
->monitor_flags
= 0;
4868 ofproto_compose_flow_refresh_update(rule
, flags
, msgs
);
4873 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor
*m
,
4874 struct rule
*rule
, uint64_t seqno
,
4875 struct rule_collection
*rules
)
4876 OVS_REQUIRES(ofproto_mutex
)
4878 enum nx_flow_monitor_flags update
;
4880 if (ofproto_rule_is_hidden(rule
)) {
4885 ? ofoperation_has_out_port(rule
->pending
, m
->out_port
)
4886 : ofproto_rule_has_out_port(rule
, m
->out_port
))) {
4891 if (rule
->add_seqno
> seqno
) {
4892 update
= NXFMF_ADD
| NXFMF_MODIFY
;
4893 } else if (rule
->modify_seqno
> seqno
) {
4894 update
= NXFMF_MODIFY
;
4899 if (!(m
->flags
& update
)) {
4903 update
= NXFMF_INITIAL
;
4906 if (!rule
->monitor_flags
) {
4907 rule_collection_add(rules
, rule
);
4909 rule
->monitor_flags
|= update
| (m
->flags
& NXFMF_ACTIONS
);
4913 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor
*m
,
4915 struct rule_collection
*rules
)
4916 OVS_REQUIRES(ofproto_mutex
)
4918 const struct ofproto
*ofproto
= ofconn_get_ofproto(m
->ofconn
);
4919 const struct ofoperation
*op
;
4920 const struct oftable
*table
;
4921 struct cls_rule target
;
4923 cls_rule_init_from_minimatch(&target
, &m
->match
, 0);
4924 FOR_EACH_MATCHING_TABLE (table
, m
->table_id
, ofproto
) {
4925 struct cls_cursor cursor
;
4928 fat_rwlock_rdlock(&table
->cls
.rwlock
);
4929 cls_cursor_init(&cursor
, &table
->cls
, &target
);
4930 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
4931 ovs_assert(!rule
->pending
); /* XXX */
4932 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
4934 fat_rwlock_unlock(&table
->cls
.rwlock
);
4937 HMAP_FOR_EACH (op
, hmap_node
, &ofproto
->deletions
) {
4938 struct rule
*rule
= op
->rule
;
4940 if (((m
->table_id
== 0xff
4941 ? !(ofproto
->tables
[rule
->table_id
].flags
& OFTABLE_HIDDEN
)
4942 : m
->table_id
== rule
->table_id
))
4943 && cls_rule_is_loose_match(&rule
->cr
, &target
.match
)) {
4944 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
4947 cls_rule_destroy(&target
);
4951 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor
*m
,
4952 struct rule_collection
*rules
)
4953 OVS_REQUIRES(ofproto_mutex
)
4955 if (m
->flags
& NXFMF_INITIAL
) {
4956 ofproto_collect_ofmonitor_refresh_rules(m
, 0, rules
);
4961 ofmonitor_collect_resume_rules(struct ofmonitor
*m
,
4962 uint64_t seqno
, struct rule_collection
*rules
)
4963 OVS_REQUIRES(ofproto_mutex
)
4965 ofproto_collect_ofmonitor_refresh_rules(m
, seqno
, rules
);
4969 handle_flow_monitor_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4970 OVS_EXCLUDED(ofproto_mutex
)
4972 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
4973 struct ofmonitor
**monitors
;
4974 size_t n_monitors
, allocated_monitors
;
4975 struct rule_collection rules
;
4976 struct list replies
;
4982 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
4984 n_monitors
= allocated_monitors
= 0;
4986 ovs_mutex_lock(&ofproto_mutex
);
4988 struct ofputil_flow_monitor_request request
;
4989 struct ofmonitor
*m
;
4992 retval
= ofputil_decode_flow_monitor_request(&request
, &b
);
4993 if (retval
== EOF
) {
4995 } else if (retval
) {
5000 if (request
.table_id
!= 0xff
5001 && request
.table_id
>= ofproto
->n_tables
) {
5002 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
5006 error
= ofmonitor_create(&request
, ofconn
, &m
);
5011 if (n_monitors
>= allocated_monitors
) {
5012 monitors
= x2nrealloc(monitors
, &allocated_monitors
,
5015 monitors
[n_monitors
++] = m
;
5018 rule_collection_init(&rules
);
5019 for (i
= 0; i
< n_monitors
; i
++) {
5020 ofproto_collect_ofmonitor_initial_rules(monitors
[i
], &rules
);
5023 ofpmp_init(&replies
, oh
);
5024 ofmonitor_compose_refresh_updates(&rules
, &replies
);
5025 ovs_mutex_unlock(&ofproto_mutex
);
5027 rule_collection_destroy(&rules
);
5029 ofconn_send_replies(ofconn
, &replies
);
5035 for (i
= 0; i
< n_monitors
; i
++) {
5036 ofmonitor_destroy(monitors
[i
]);
5039 ovs_mutex_unlock(&ofproto_mutex
);
5045 handle_flow_monitor_cancel(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
5046 OVS_EXCLUDED(ofproto_mutex
)
5048 struct ofmonitor
*m
;
5052 id
= ofputil_decode_flow_monitor_cancel(oh
);
5054 ovs_mutex_lock(&ofproto_mutex
);
5055 m
= ofmonitor_lookup(ofconn
, id
);
5057 ofmonitor_destroy(m
);
5060 error
= OFPERR_NXBRC_FM_BAD_ID
;
5062 ovs_mutex_unlock(&ofproto_mutex
);
5067 /* Meters implementation.
5069 * Meter table entry, indexed by the OpenFlow meter_id.
5070 * These are always dynamically allocated to allocate enough space for
5072 * 'created' is used to compute the duration for meter stats.
5073 * 'list rules' is needed so that we can delete the dependent rules when the
5074 * meter table entry is deleted.
5075 * 'provider_meter_id' is for the provider's private use.
5078 long long int created
; /* Time created. */
5079 struct list rules
; /* List of "struct rule_dpif"s. */
5080 ofproto_meter_id provider_meter_id
;
5081 uint16_t flags
; /* Meter flags. */
5082 uint16_t n_bands
; /* Number of meter bands. */
5083 struct ofputil_meter_band
*bands
;
5087 * This is used in instruction validation at flow set-up time,
5088 * as flows may not use non-existing meters.
5089 * Return value of UINT32_MAX signifies an invalid meter.
5092 get_provider_meter_id(const struct ofproto
*ofproto
, uint32_t of_meter_id
)
5094 if (of_meter_id
&& of_meter_id
<= ofproto
->meter_features
.max_meters
) {
5095 const struct meter
*meter
= ofproto
->meters
[of_meter_id
];
5097 return meter
->provider_meter_id
.uint32
;
5104 meter_update(struct meter
*meter
, const struct ofputil_meter_config
*config
)
5108 meter
->flags
= config
->flags
;
5109 meter
->n_bands
= config
->n_bands
;
5110 meter
->bands
= xmemdup(config
->bands
,
5111 config
->n_bands
* sizeof *meter
->bands
);
5114 static struct meter
*
5115 meter_create(const struct ofputil_meter_config
*config
,
5116 ofproto_meter_id provider_meter_id
)
5118 struct meter
*meter
;
5120 meter
= xzalloc(sizeof *meter
);
5121 meter
->provider_meter_id
= provider_meter_id
;
5122 meter
->created
= time_msec();
5123 list_init(&meter
->rules
);
5125 meter_update(meter
, config
);
5131 meter_delete(struct ofproto
*ofproto
, uint32_t first
, uint32_t last
)
5132 OVS_REQUIRES(ofproto_mutex
)
5135 for (mid
= first
; mid
<= last
; ++mid
) {
5136 struct meter
*meter
= ofproto
->meters
[mid
];
5138 ofproto
->meters
[mid
] = NULL
;
5139 ofproto
->ofproto_class
->meter_del(ofproto
,
5140 meter
->provider_meter_id
);
5148 handle_add_meter(struct ofproto
*ofproto
, struct ofputil_meter_mod
*mm
)
5150 ofproto_meter_id provider_meter_id
= { UINT32_MAX
};
5151 struct meter
**meterp
= &ofproto
->meters
[mm
->meter
.meter_id
];
5155 return OFPERR_OFPMMFC_METER_EXISTS
;
5158 error
= ofproto
->ofproto_class
->meter_set(ofproto
, &provider_meter_id
,
5161 ovs_assert(provider_meter_id
.uint32
!= UINT32_MAX
);
5162 *meterp
= meter_create(&mm
->meter
, provider_meter_id
);
5168 handle_modify_meter(struct ofproto
*ofproto
, struct ofputil_meter_mod
*mm
)
5170 struct meter
*meter
= ofproto
->meters
[mm
->meter
.meter_id
];
5172 uint32_t provider_meter_id
;
5175 return OFPERR_OFPMMFC_UNKNOWN_METER
;
5178 provider_meter_id
= meter
->provider_meter_id
.uint32
;
5179 error
= ofproto
->ofproto_class
->meter_set(ofproto
,
5180 &meter
->provider_meter_id
,
5182 ovs_assert(meter
->provider_meter_id
.uint32
== provider_meter_id
);
5184 meter_update(meter
, &mm
->meter
);
5190 handle_delete_meter(struct ofconn
*ofconn
, const struct ofp_header
*oh
,
5191 struct ofputil_meter_mod
*mm
)
5192 OVS_EXCLUDED(ofproto_mutex
)
5194 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5195 uint32_t meter_id
= mm
->meter
.meter_id
;
5196 struct rule_collection rules
;
5197 enum ofperr error
= 0;
5198 uint32_t first
, last
;
5200 if (meter_id
== OFPM13_ALL
) {
5202 last
= ofproto
->meter_features
.max_meters
;
5204 if (!meter_id
|| meter_id
> ofproto
->meter_features
.max_meters
) {
5207 first
= last
= meter_id
;
5210 /* First delete the rules that use this meter. If any of those rules are
5211 * currently being modified, postpone the whole operation until later. */
5212 rule_collection_init(&rules
);
5213 ovs_mutex_lock(&ofproto_mutex
);
5214 for (meter_id
= first
; meter_id
<= last
; ++meter_id
) {
5215 struct meter
*meter
= ofproto
->meters
[meter_id
];
5216 if (meter
&& !list_is_empty(&meter
->rules
)) {
5219 LIST_FOR_EACH (rule
, meter_list_node
, &meter
->rules
) {
5220 if (rule
->pending
) {
5221 error
= OFPROTO_POSTPONE
;
5224 rule_collection_add(&rules
, rule
);
5229 delete_flows__(ofproto
, ofconn
, oh
, &rules
, OFPRR_METER_DELETE
);
5232 /* Delete the meters. */
5233 meter_delete(ofproto
, first
, last
);
5236 ovs_mutex_unlock(&ofproto_mutex
);
5237 rule_collection_destroy(&rules
);
5243 handle_meter_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
5245 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5246 struct ofputil_meter_mod mm
;
5247 uint64_t bands_stub
[256 / 8];
5248 struct ofpbuf bands
;
5252 error
= reject_slave_controller(ofconn
);
5257 ofpbuf_use_stub(&bands
, bands_stub
, sizeof bands_stub
);
5259 error
= ofputil_decode_meter_mod(oh
, &mm
, &bands
);
5261 goto exit_free_bands
;
5264 meter_id
= mm
.meter
.meter_id
;
5266 if (mm
.command
!= OFPMC13_DELETE
) {
5267 /* Fails also when meters are not implemented by the provider. */
5268 if (meter_id
== 0 || meter_id
> OFPM13_MAX
) {
5269 error
= OFPERR_OFPMMFC_INVALID_METER
;
5270 goto exit_free_bands
;
5271 } else if (meter_id
> ofproto
->meter_features
.max_meters
) {
5272 error
= OFPERR_OFPMMFC_OUT_OF_METERS
;
5273 goto exit_free_bands
;
5275 if (mm
.meter
.n_bands
> ofproto
->meter_features
.max_bands
) {
5276 error
= OFPERR_OFPMMFC_OUT_OF_BANDS
;
5277 goto exit_free_bands
;
5281 switch (mm
.command
) {
5283 error
= handle_add_meter(ofproto
, &mm
);
5286 case OFPMC13_MODIFY
:
5287 error
= handle_modify_meter(ofproto
, &mm
);
5290 case OFPMC13_DELETE
:
5291 error
= handle_delete_meter(ofconn
, oh
, &mm
);
5295 error
= OFPERR_OFPMMFC_BAD_COMMAND
;
5300 ofpbuf_uninit(&bands
);
5305 handle_meter_features_request(struct ofconn
*ofconn
,
5306 const struct ofp_header
*request
)
5308 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5309 struct ofputil_meter_features features
;
5312 if (ofproto
->ofproto_class
->meter_get_features
) {
5313 ofproto
->ofproto_class
->meter_get_features(ofproto
, &features
);
5315 memset(&features
, 0, sizeof features
);
5317 b
= ofputil_encode_meter_features_reply(&features
, request
);
5319 ofconn_send_reply(ofconn
, b
);
5324 handle_meter_request(struct ofconn
*ofconn
, const struct ofp_header
*request
,
5327 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5328 struct list replies
;
5329 uint64_t bands_stub
[256 / 8];
5330 struct ofpbuf bands
;
5331 uint32_t meter_id
, first
, last
;
5333 ofputil_decode_meter_request(request
, &meter_id
);
5335 if (meter_id
== OFPM13_ALL
) {
5337 last
= ofproto
->meter_features
.max_meters
;
5339 if (!meter_id
|| meter_id
> ofproto
->meter_features
.max_meters
||
5340 !ofproto
->meters
[meter_id
]) {
5341 return OFPERR_OFPMMFC_UNKNOWN_METER
;
5343 first
= last
= meter_id
;
5346 ofpbuf_use_stub(&bands
, bands_stub
, sizeof bands_stub
);
5347 ofpmp_init(&replies
, request
);
5349 for (meter_id
= first
; meter_id
<= last
; ++meter_id
) {
5350 struct meter
*meter
= ofproto
->meters
[meter_id
];
5352 continue; /* Skip non-existing meters. */
5354 if (type
== OFPTYPE_METER_STATS_REQUEST
) {
5355 struct ofputil_meter_stats stats
;
5357 stats
.meter_id
= meter_id
;
5359 /* Provider sets the packet and byte counts, we do the rest. */
5360 stats
.flow_count
= list_size(&meter
->rules
);
5361 calc_duration(meter
->created
, time_msec(),
5362 &stats
.duration_sec
, &stats
.duration_nsec
);
5363 stats
.n_bands
= meter
->n_bands
;
5364 ofpbuf_clear(&bands
);
5366 = ofpbuf_put_uninit(&bands
,
5367 meter
->n_bands
* sizeof *stats
.bands
);
5369 if (!ofproto
->ofproto_class
->meter_get(ofproto
,
5370 meter
->provider_meter_id
,
5372 ofputil_append_meter_stats(&replies
, &stats
);
5374 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5375 struct ofputil_meter_config config
;
5377 config
.meter_id
= meter_id
;
5378 config
.flags
= meter
->flags
;
5379 config
.n_bands
= meter
->n_bands
;
5380 config
.bands
= meter
->bands
;
5381 ofputil_append_meter_config(&replies
, &config
);
5385 ofconn_send_replies(ofconn
, &replies
);
5386 ofpbuf_uninit(&bands
);
5391 ofproto_group_lookup(const struct ofproto
*ofproto
, uint32_t group_id
,
5392 struct ofgroup
**group
)
5393 OVS_TRY_RDLOCK(true, (*group
)->rwlock
)
5395 ovs_rwlock_rdlock(&ofproto
->groups_rwlock
);
5396 HMAP_FOR_EACH_IN_BUCKET (*group
, hmap_node
,
5397 hash_int(group_id
, 0), &ofproto
->groups
) {
5398 if ((*group
)->group_id
== group_id
) {
5399 ovs_rwlock_rdlock(&(*group
)->rwlock
);
5400 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5404 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5409 ofproto_group_release(struct ofgroup
*group
)
5410 OVS_RELEASES(group
->rwlock
)
5412 ovs_rwlock_unlock(&group
->rwlock
);
5416 ofproto_group_write_lookup(const struct ofproto
*ofproto
, uint32_t group_id
,
5417 struct ofgroup
**group
)
5418 OVS_TRY_WRLOCK(true, ofproto
->groups_rwlock
)
5419 OVS_TRY_WRLOCK(true, (*group
)->rwlock
)
5421 ovs_rwlock_wrlock(&ofproto
->groups_rwlock
);
5422 HMAP_FOR_EACH_IN_BUCKET (*group
, hmap_node
,
5423 hash_int(group_id
, 0), &ofproto
->groups
) {
5424 if ((*group
)->group_id
== group_id
) {
5425 ovs_rwlock_wrlock(&(*group
)->rwlock
);
5429 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5434 ofproto_group_exists__(const struct ofproto
*ofproto
, uint32_t group_id
)
5435 OVS_REQ_RDLOCK(ofproto
->groups_rwlock
)
5437 struct ofgroup
*grp
;
5439 HMAP_FOR_EACH_IN_BUCKET (grp
, hmap_node
,
5440 hash_int(group_id
, 0), &ofproto
->groups
) {
5441 if (grp
->group_id
== group_id
) {
5449 ofproto_group_exists(const struct ofproto
*ofproto
, uint32_t group_id
)
5450 OVS_EXCLUDED(ofproto
->groups_rwlock
)
5454 ovs_rwlock_rdlock(&ofproto
->groups_rwlock
);
5455 exists
= ofproto_group_exists__(ofproto
, group_id
);
5456 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5462 group_get_ref_count(struct ofgroup
*group
)
5463 OVS_EXCLUDED(ofproto_mutex
)
5465 struct ofproto
*ofproto
= group
->ofproto
;
5466 struct rule_criteria criteria
;
5467 struct rule_collection rules
;
5472 match_init_catchall(&match
);
5473 rule_criteria_init(&criteria
, 0xff, &match
, 0, htonll(0), htonll(0),
5474 OFPP_ANY
, group
->group_id
);
5475 ovs_mutex_lock(&ofproto_mutex
);
5476 error
= collect_rules_loose(ofproto
, &criteria
, &rules
);
5477 ovs_mutex_unlock(&ofproto_mutex
);
5478 rule_criteria_destroy(&criteria
);
5480 count
= !error
&& rules
.n
< UINT32_MAX
? rules
.n
: UINT32_MAX
;
5482 rule_collection_destroy(&rules
);
5487 append_group_stats(struct ofgroup
*group
, struct list
*replies
)
5488 OVS_REQ_RDLOCK(group
->rwlock
)
5490 struct ofputil_group_stats ogs
;
5491 struct ofproto
*ofproto
= group
->ofproto
;
5492 long long int now
= time_msec();
5495 ogs
.bucket_stats
= xmalloc(group
->n_buckets
* sizeof *ogs
.bucket_stats
);
5497 /* Provider sets the packet and byte counts, we do the rest. */
5498 ogs
.ref_count
= group_get_ref_count(group
);
5499 ogs
.n_buckets
= group
->n_buckets
;
5501 error
= (ofproto
->ofproto_class
->group_get_stats
5502 ? ofproto
->ofproto_class
->group_get_stats(group
, &ogs
)
5505 ogs
.packet_count
= UINT64_MAX
;
5506 ogs
.byte_count
= UINT64_MAX
;
5507 memset(ogs
.bucket_stats
, 0xff,
5508 ogs
.n_buckets
* sizeof *ogs
.bucket_stats
);
5511 ogs
.group_id
= group
->group_id
;
5512 calc_duration(group
->created
, now
, &ogs
.duration_sec
, &ogs
.duration_nsec
);
5514 ofputil_append_group_stats(replies
, &ogs
);
5516 free(ogs
.bucket_stats
);
5520 handle_group_stats_request(struct ofconn
*ofconn
,
5521 const struct ofp_header
*request
)
5523 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5524 struct list replies
;
5526 struct ofgroup
*group
;
5529 error
= ofputil_decode_group_stats_request(request
, &group_id
);
5534 ofpmp_init(&replies
, request
);
5536 if (group_id
== OFPG_ALL
) {
5537 ovs_rwlock_rdlock(&ofproto
->groups_rwlock
);
5538 HMAP_FOR_EACH (group
, hmap_node
, &ofproto
->groups
) {
5539 ovs_rwlock_rdlock(&group
->rwlock
);
5540 append_group_stats(group
, &replies
);
5541 ovs_rwlock_unlock(&group
->rwlock
);
5543 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5545 if (ofproto_group_lookup(ofproto
, group_id
, &group
)) {
5546 append_group_stats(group
, &replies
);
5547 ofproto_group_release(group
);
5551 ofconn_send_replies(ofconn
, &replies
);
5557 handle_group_desc_stats_request(struct ofconn
*ofconn
,
5558 const struct ofp_header
*request
)
5560 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5561 struct list replies
;
5562 struct ofputil_group_desc gds
;
5563 struct ofgroup
*group
;
5565 ofpmp_init(&replies
, request
);
5567 ovs_rwlock_rdlock(&ofproto
->groups_rwlock
);
5568 HMAP_FOR_EACH (group
, hmap_node
, &ofproto
->groups
) {
5569 gds
.group_id
= group
->group_id
;
5570 gds
.type
= group
->type
;
5571 ofputil_append_group_desc_reply(&gds
, &group
->buckets
, &replies
);
5573 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5575 ofconn_send_replies(ofconn
, &replies
);
5581 handle_group_features_stats_request(struct ofconn
*ofconn
,
5582 const struct ofp_header
*request
)
5584 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
5587 msg
= ofputil_encode_group_features_reply(&p
->ogf
, request
);
5589 ofconn_send_reply(ofconn
, msg
);
5596 handle_queue_get_config_request(struct ofconn
*ofconn
,
5597 const struct ofp_header
*oh
)
5599 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
5600 struct netdev_queue_dump queue_dump
;
5601 struct ofport
*ofport
;
5602 unsigned int queue_id
;
5603 struct ofpbuf
*reply
;
5604 struct smap details
;
5608 error
= ofputil_decode_queue_get_config_request(oh
, &request
);
5613 ofport
= ofproto_get_port(p
, request
);
5615 return OFPERR_OFPQOFC_BAD_PORT
;
5618 reply
= ofputil_encode_queue_get_config_reply(oh
);
5620 smap_init(&details
);
5621 NETDEV_QUEUE_FOR_EACH (&queue_id
, &details
, &queue_dump
, ofport
->netdev
) {
5622 struct ofputil_queue_config queue
;
5624 /* None of the existing queues have compatible properties, so we
5625 * hard-code omitting min_rate and max_rate. */
5626 queue
.queue_id
= queue_id
;
5627 queue
.min_rate
= UINT16_MAX
;
5628 queue
.max_rate
= UINT16_MAX
;
5629 ofputil_append_queue_get_config_reply(reply
, &queue
);
5631 smap_destroy(&details
);
5633 ofconn_send_reply(ofconn
, reply
);
5638 /* Implements OFPGC11_ADD
5639 * in which no matching flow already exists in the flow table.
5641 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
5642 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
5643 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
5644 * initiated now but may be retried later.
5646 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
5647 * ownership remains with the caller.
5649 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
5652 add_group(struct ofproto
*ofproto
, struct ofputil_group_mod
*gm
)
5654 struct ofgroup
*ofgroup
;
5657 if (gm
->group_id
> OFPG_MAX
) {
5658 return OFPERR_OFPGMFC_INVALID_GROUP
;
5660 if (gm
->type
> OFPGT11_FF
) {
5661 return OFPERR_OFPGMFC_BAD_TYPE
;
5664 /* Allocate new group and initialize it. */
5665 ofgroup
= ofproto
->ofproto_class
->group_alloc();
5667 VLOG_WARN_RL(&rl
, "%s: failed to create group", ofproto
->name
);
5668 return OFPERR_OFPGMFC_OUT_OF_GROUPS
;
5671 ovs_rwlock_init(&ofgroup
->rwlock
);
5672 ofgroup
->ofproto
= ofproto
;
5673 ofgroup
->group_id
= gm
->group_id
;
5674 ofgroup
->type
= gm
->type
;
5675 ofgroup
->created
= ofgroup
->modified
= time_msec();
5677 list_move(&ofgroup
->buckets
, &gm
->buckets
);
5678 ofgroup
->n_buckets
= list_size(&ofgroup
->buckets
);
5680 /* Construct called BEFORE any locks are held. */
5681 error
= ofproto
->ofproto_class
->group_construct(ofgroup
);
5686 /* We wrlock as late as possible to minimize the time we jam any other
5687 * threads: No visible state changes before acquiring the lock. */
5688 ovs_rwlock_wrlock(&ofproto
->groups_rwlock
);
5690 if (ofproto
->n_groups
[gm
->type
] >= ofproto
->ogf
.max_groups
[gm
->type
]) {
5691 error
= OFPERR_OFPGMFC_OUT_OF_GROUPS
;
5695 if (ofproto_group_exists__(ofproto
, gm
->group_id
)) {
5696 error
= OFPERR_OFPGMFC_GROUP_EXISTS
;
5701 /* Insert new group. */
5702 hmap_insert(&ofproto
->groups
, &ofgroup
->hmap_node
,
5703 hash_int(ofgroup
->group_id
, 0));
5704 ofproto
->n_groups
[ofgroup
->type
]++;
5706 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5711 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5712 ofproto
->ofproto_class
->group_destruct(ofgroup
);
5714 ofputil_bucket_list_destroy(&ofgroup
->buckets
);
5715 ofproto
->ofproto_class
->group_dealloc(ofgroup
);
5720 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
5723 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
5726 modify_group(struct ofproto
*ofproto
, struct ofputil_group_mod
*gm
)
5728 struct ofgroup
*ofgroup
;
5729 struct ofgroup
*victim
;
5732 if (gm
->group_id
> OFPG_MAX
) {
5733 return OFPERR_OFPGMFC_INVALID_GROUP
;
5736 if (gm
->type
> OFPGT11_FF
) {
5737 return OFPERR_OFPGMFC_BAD_TYPE
;
5740 victim
= ofproto
->ofproto_class
->group_alloc();
5742 VLOG_WARN_RL(&rl
, "%s: failed to allocate group", ofproto
->name
);
5743 return OFPERR_OFPGMFC_OUT_OF_GROUPS
;
5746 if (!ofproto_group_write_lookup(ofproto
, gm
->group_id
, &ofgroup
)) {
5747 error
= OFPERR_OFPGMFC_UNKNOWN_GROUP
;
5750 /* Both group's and its container's write locks held now.
5751 * Also, n_groups[] is protected by ofproto->groups_rwlock. */
5752 if (ofgroup
->type
!= gm
->type
5753 && ofproto
->n_groups
[gm
->type
] >= ofproto
->ogf
.max_groups
[gm
->type
]) {
5754 error
= OFPERR_OFPGMFC_OUT_OF_GROUPS
;
5759 list_move(&victim
->buckets
, &ofgroup
->buckets
);
5761 ofgroup
->type
= gm
->type
;
5762 list_move(&ofgroup
->buckets
, &gm
->buckets
);
5763 ofgroup
->n_buckets
= list_size(&ofgroup
->buckets
);
5765 error
= ofproto
->ofproto_class
->group_modify(ofgroup
, victim
);
5767 ofputil_bucket_list_destroy(&victim
->buckets
);
5768 ofproto
->n_groups
[victim
->type
]--;
5769 ofproto
->n_groups
[ofgroup
->type
]++;
5770 ofgroup
->modified
= time_msec();
5772 ofputil_bucket_list_destroy(&ofgroup
->buckets
);
5775 list_move(&ofgroup
->buckets
, &victim
->buckets
);
5779 ovs_rwlock_unlock(&ofgroup
->rwlock
);
5780 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5782 ofproto
->ofproto_class
->group_dealloc(victim
);
5787 delete_group__(struct ofproto
*ofproto
, struct ofgroup
*ofgroup
)
5788 OVS_RELEASES(ofproto
->groups_rwlock
)
5791 struct ofputil_flow_mod fm
;
5793 /* Delete all flow entries containing this group in a group action */
5794 match_init_catchall(&match
);
5795 flow_mod_init(&fm
, &match
, 0, NULL
, 0, OFPFC_DELETE
);
5796 fm
.out_group
= ofgroup
->group_id
;
5797 handle_flow_mod__(ofproto
, NULL
, &fm
, NULL
);
5799 /* Must wait until existing readers are done,
5800 * while holding the container's write lock at the same time. */
5801 ovs_rwlock_wrlock(&ofgroup
->rwlock
);
5802 hmap_remove(&ofproto
->groups
, &ofgroup
->hmap_node
);
5803 /* No-one can find this group any more. */
5804 ofproto
->n_groups
[ofgroup
->type
]--;
5805 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5807 ofproto
->ofproto_class
->group_destruct(ofgroup
);
5808 ofputil_bucket_list_destroy(&ofgroup
->buckets
);
5809 ovs_rwlock_unlock(&ofgroup
->rwlock
);
5810 ovs_rwlock_destroy(&ofgroup
->rwlock
);
5811 ofproto
->ofproto_class
->group_dealloc(ofgroup
);
5814 /* Implements OFPGC_DELETE. */
5816 delete_group(struct ofproto
*ofproto
, uint32_t group_id
)
5818 struct ofgroup
*ofgroup
;
5820 ovs_rwlock_wrlock(&ofproto
->groups_rwlock
);
5821 if (group_id
== OFPG_ALL
) {
5823 struct hmap_node
*node
= hmap_first(&ofproto
->groups
);
5827 ofgroup
= CONTAINER_OF(node
, struct ofgroup
, hmap_node
);
5828 delete_group__(ofproto
, ofgroup
);
5829 /* Lock for each node separately, so that we will not jam the
5830 * other threads for too long time. */
5831 ovs_rwlock_wrlock(&ofproto
->groups_rwlock
);
5834 HMAP_FOR_EACH_IN_BUCKET (ofgroup
, hmap_node
,
5835 hash_int(group_id
, 0), &ofproto
->groups
) {
5836 if (ofgroup
->group_id
== group_id
) {
5837 delete_group__(ofproto
, ofgroup
);
5842 ovs_rwlock_unlock(&ofproto
->groups_rwlock
);
5846 handle_group_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
5848 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5849 struct ofputil_group_mod gm
;
5852 error
= reject_slave_controller(ofconn
);
5857 error
= ofputil_decode_group_mod(oh
, &gm
);
5862 switch (gm
.command
) {
5864 return add_group(ofproto
, &gm
);
5866 case OFPGC11_MODIFY
:
5867 return modify_group(ofproto
, &gm
);
5869 case OFPGC11_DELETE
:
5870 delete_group(ofproto
, gm
.group_id
);
5874 if (gm
.command
> OFPGC11_DELETE
) {
5875 VLOG_WARN_RL(&rl
, "%s: Invalid group_mod command type %d",
5876 ofproto
->name
, gm
.command
);
5878 return OFPERR_OFPGMFC_BAD_COMMAND
;
5882 enum ofproto_table_config
5883 ofproto_table_get_config(const struct ofproto
*ofproto
, uint8_t table_id
)
5886 atomic_read(&ofproto
->tables
[table_id
].config
, &value
);
5887 return (enum ofproto_table_config
)value
;
5891 table_mod(struct ofproto
*ofproto
, const struct ofputil_table_mod
*tm
)
5893 /* Only accept currently supported configurations */
5894 if (tm
->config
& ~OFPTC11_TABLE_MISS_MASK
) {
5895 return OFPERR_OFPTMFC_BAD_CONFIG
;
5898 if (tm
->table_id
== OFPTT_ALL
) {
5900 for (i
= 0; i
< ofproto
->n_tables
; i
++) {
5901 atomic_store(&ofproto
->tables
[i
].config
,
5902 (unsigned int)tm
->config
);
5904 } else if (!check_table_id(ofproto
, tm
->table_id
)) {
5905 return OFPERR_OFPTMFC_BAD_TABLE
;
5907 atomic_store(&ofproto
->tables
[tm
->table_id
].config
,
5908 (unsigned int)tm
->config
);
5915 handle_table_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
5917 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
5918 struct ofputil_table_mod tm
;
5921 error
= reject_slave_controller(ofconn
);
5926 error
= ofputil_decode_table_mod(oh
, &tm
);
5931 return table_mod(ofproto
, &tm
);
5935 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
5936 OVS_EXCLUDED(ofproto_mutex
)
5938 const struct ofp_header
*oh
= ofpbuf_data(msg
);
5942 error
= ofptype_decode(&type
, oh
);
5946 if (oh
->version
>= OFP13_VERSION
&& ofpmsg_is_stat_request(oh
)
5947 && ofpmp_more(oh
)) {
5948 /* We have no buffer implementation for multipart requests.
5949 * Report overflow for requests which consists of multiple
5951 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW
;
5955 /* OpenFlow requests. */
5956 case OFPTYPE_ECHO_REQUEST
:
5957 return handle_echo_request(ofconn
, oh
);
5959 case OFPTYPE_FEATURES_REQUEST
:
5960 return handle_features_request(ofconn
, oh
);
5962 case OFPTYPE_GET_CONFIG_REQUEST
:
5963 return handle_get_config_request(ofconn
, oh
);
5965 case OFPTYPE_SET_CONFIG
:
5966 return handle_set_config(ofconn
, oh
);
5968 case OFPTYPE_PACKET_OUT
:
5969 return handle_packet_out(ofconn
, oh
);
5971 case OFPTYPE_PORT_MOD
:
5972 return handle_port_mod(ofconn
, oh
);
5974 case OFPTYPE_FLOW_MOD
:
5975 return handle_flow_mod(ofconn
, oh
);
5977 case OFPTYPE_GROUP_MOD
:
5978 return handle_group_mod(ofconn
, oh
);
5980 case OFPTYPE_TABLE_MOD
:
5981 return handle_table_mod(ofconn
, oh
);
5983 case OFPTYPE_METER_MOD
:
5984 return handle_meter_mod(ofconn
, oh
);
5986 case OFPTYPE_BARRIER_REQUEST
:
5987 return handle_barrier_request(ofconn
, oh
);
5989 case OFPTYPE_ROLE_REQUEST
:
5990 return handle_role_request(ofconn
, oh
);
5992 /* OpenFlow replies. */
5993 case OFPTYPE_ECHO_REPLY
:
5996 /* Nicira extension requests. */
5997 case OFPTYPE_FLOW_MOD_TABLE_ID
:
5998 return handle_nxt_flow_mod_table_id(ofconn
, oh
);
6000 case OFPTYPE_SET_FLOW_FORMAT
:
6001 return handle_nxt_set_flow_format(ofconn
, oh
);
6003 case OFPTYPE_SET_PACKET_IN_FORMAT
:
6004 return handle_nxt_set_packet_in_format(ofconn
, oh
);
6006 case OFPTYPE_SET_CONTROLLER_ID
:
6007 return handle_nxt_set_controller_id(ofconn
, oh
);
6009 case OFPTYPE_FLOW_AGE
:
6010 /* Nothing to do. */
6013 case OFPTYPE_FLOW_MONITOR_CANCEL
:
6014 return handle_flow_monitor_cancel(ofconn
, oh
);
6016 case OFPTYPE_SET_ASYNC_CONFIG
:
6017 return handle_nxt_set_async_config(ofconn
, oh
);
6019 case OFPTYPE_GET_ASYNC_REQUEST
:
6020 return handle_nxt_get_async_request(ofconn
, oh
);
6022 /* Statistics requests. */
6023 case OFPTYPE_DESC_STATS_REQUEST
:
6024 return handle_desc_stats_request(ofconn
, oh
);
6026 case OFPTYPE_FLOW_STATS_REQUEST
:
6027 return handle_flow_stats_request(ofconn
, oh
);
6029 case OFPTYPE_AGGREGATE_STATS_REQUEST
:
6030 return handle_aggregate_stats_request(ofconn
, oh
);
6032 case OFPTYPE_TABLE_STATS_REQUEST
:
6033 return handle_table_stats_request(ofconn
, oh
);
6035 case OFPTYPE_PORT_STATS_REQUEST
:
6036 return handle_port_stats_request(ofconn
, oh
);
6038 case OFPTYPE_QUEUE_STATS_REQUEST
:
6039 return handle_queue_stats_request(ofconn
, oh
);
6041 case OFPTYPE_PORT_DESC_STATS_REQUEST
:
6042 return handle_port_desc_stats_request(ofconn
, oh
);
6044 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST
:
6045 return handle_flow_monitor_request(ofconn
, oh
);
6047 case OFPTYPE_METER_STATS_REQUEST
:
6048 case OFPTYPE_METER_CONFIG_STATS_REQUEST
:
6049 return handle_meter_request(ofconn
, oh
, type
);
6051 case OFPTYPE_METER_FEATURES_STATS_REQUEST
:
6052 return handle_meter_features_request(ofconn
, oh
);
6054 case OFPTYPE_GROUP_STATS_REQUEST
:
6055 return handle_group_stats_request(ofconn
, oh
);
6057 case OFPTYPE_GROUP_DESC_STATS_REQUEST
:
6058 return handle_group_desc_stats_request(ofconn
, oh
);
6060 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST
:
6061 return handle_group_features_stats_request(ofconn
, oh
);
6063 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST
:
6064 return handle_queue_get_config_request(ofconn
, oh
);
6068 case OFPTYPE_FEATURES_REPLY
:
6069 case OFPTYPE_GET_CONFIG_REPLY
:
6070 case OFPTYPE_PACKET_IN
:
6071 case OFPTYPE_FLOW_REMOVED
:
6072 case OFPTYPE_PORT_STATUS
:
6073 case OFPTYPE_BARRIER_REPLY
:
6074 case OFPTYPE_QUEUE_GET_CONFIG_REPLY
:
6075 case OFPTYPE_DESC_STATS_REPLY
:
6076 case OFPTYPE_FLOW_STATS_REPLY
:
6077 case OFPTYPE_QUEUE_STATS_REPLY
:
6078 case OFPTYPE_PORT_STATS_REPLY
:
6079 case OFPTYPE_TABLE_STATS_REPLY
:
6080 case OFPTYPE_AGGREGATE_STATS_REPLY
:
6081 case OFPTYPE_PORT_DESC_STATS_REPLY
:
6082 case OFPTYPE_ROLE_REPLY
:
6083 case OFPTYPE_FLOW_MONITOR_PAUSED
:
6084 case OFPTYPE_FLOW_MONITOR_RESUMED
:
6085 case OFPTYPE_FLOW_MONITOR_STATS_REPLY
:
6086 case OFPTYPE_GET_ASYNC_REPLY
:
6087 case OFPTYPE_GROUP_STATS_REPLY
:
6088 case OFPTYPE_GROUP_DESC_STATS_REPLY
:
6089 case OFPTYPE_GROUP_FEATURES_STATS_REPLY
:
6090 case OFPTYPE_METER_STATS_REPLY
:
6091 case OFPTYPE_METER_CONFIG_STATS_REPLY
:
6092 case OFPTYPE_METER_FEATURES_STATS_REPLY
:
6093 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST
:
6094 case OFPTYPE_TABLE_FEATURES_STATS_REPLY
:
6095 case OFPTYPE_ROLE_STATUS
:
6097 if (ofpmsg_is_stat_request(oh
)) {
6098 return OFPERR_OFPBRC_BAD_STAT
;
6100 return OFPERR_OFPBRC_BAD_TYPE
;
6106 handle_openflow(struct ofconn
*ofconn
, const struct ofpbuf
*ofp_msg
)
6107 OVS_EXCLUDED(ofproto_mutex
)
6109 int error
= handle_openflow__(ofconn
, ofp_msg
);
6110 if (error
&& error
!= OFPROTO_POSTPONE
) {
6111 ofconn_send_error(ofconn
, ofpbuf_data(ofp_msg
), error
);
6113 COVERAGE_INC(ofproto_recv_openflow
);
6114 return error
!= OFPROTO_POSTPONE
;
6117 /* Asynchronous operations. */
6119 /* Creates and returns a new ofopgroup that is not associated with any
6120 * OpenFlow connection.
6122 * The caller should add operations to the returned group with
6123 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6124 static struct ofopgroup
*
6125 ofopgroup_create_unattached(struct ofproto
*ofproto
)
6126 OVS_REQUIRES(ofproto_mutex
)
6128 struct ofopgroup
*group
= xzalloc(sizeof *group
);
6129 group
->ofproto
= ofproto
;
6130 list_init(&group
->ofproto_node
);
6131 list_init(&group
->ops
);
6132 list_init(&group
->ofconn_node
);
6136 /* Creates and returns a new ofopgroup for 'ofproto'.
6138 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
6139 * connection. The 'request' and 'buffer_id' arguments are ignored.
6141 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
6142 * If the ofopgroup eventually fails, then the error reply will include
6143 * 'request'. If the ofopgroup eventually succeeds, then the packet with
6144 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
6146 * The caller should add operations to the returned group with
6147 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6148 static struct ofopgroup
*
6149 ofopgroup_create(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
6150 const struct ofp_header
*request
, uint32_t buffer_id
)
6151 OVS_REQUIRES(ofproto_mutex
)
6153 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
6155 size_t request_len
= ntohs(request
->length
);
6157 ovs_assert(ofconn_get_ofproto(ofconn
) == ofproto
);
6159 ofconn_add_opgroup(ofconn
, &group
->ofconn_node
);
6160 group
->ofconn
= ofconn
;
6161 group
->request
= xmemdup(request
, MIN(request_len
, 64));
6162 group
->buffer_id
= buffer_id
;
6167 /* Submits 'group' for processing.
6169 * If 'group' contains no operations (e.g. none were ever added, or all of the
6170 * ones that were added completed synchronously), then it is destroyed
6171 * immediately. Otherwise it is added to the ofproto's list of pending
6174 ofopgroup_submit(struct ofopgroup
*group
)
6175 OVS_REQUIRES(ofproto_mutex
)
6177 if (!group
->n_running
) {
6178 ofopgroup_complete(group
);
6180 list_push_back(&group
->ofproto
->pending
, &group
->ofproto_node
);
6181 group
->ofproto
->n_pending
++;
6186 ofopgroup_complete(struct ofopgroup
*group
)
6187 OVS_REQUIRES(ofproto_mutex
)
6189 struct ofproto
*ofproto
= group
->ofproto
;
6191 struct ofconn
*abbrev_ofconn
;
6192 ovs_be32 abbrev_xid
;
6194 struct ofoperation
*op
, *next_op
;
6197 ovs_assert(!group
->n_running
);
6200 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
6207 if (!error
&& group
->ofconn
&& group
->buffer_id
!= UINT32_MAX
) {
6208 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
6209 if (op
->type
!= OFOPERATION_DELETE
) {
6210 struct ofpbuf
*packet
;
6213 error
= ofconn_pktbuf_retrieve(group
->ofconn
, group
->buffer_id
,
6216 struct rule_execute
*re
;
6220 ofproto_rule_ref(op
->rule
);
6222 re
= xmalloc(sizeof *re
);
6223 re
->rule
= op
->rule
;
6224 re
->in_port
= in_port
;
6225 re
->packet
= packet
;
6227 if (!guarded_list_push_back(&ofproto
->rule_executes
,
6228 &re
->list_node
, 1024)) {
6229 ofproto_rule_unref(op
->rule
);
6230 ofpbuf_delete(re
->packet
);
6239 if (!error
&& !list_is_empty(&group
->ofconn_node
)) {
6240 abbrev_ofconn
= group
->ofconn
;
6241 abbrev_xid
= group
->request
->xid
;
6243 abbrev_ofconn
= NULL
;
6244 abbrev_xid
= htonl(0);
6246 LIST_FOR_EACH_SAFE (op
, next_op
, group_node
, &group
->ops
) {
6247 struct rule
*rule
= op
->rule
;
6249 /* We generally want to report the change to active OpenFlow flow
6250 monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions:
6252 - The operation failed.
6254 - The affected rule is not visible to controllers.
6256 - The operation's only effect was to update rule->modified. */
6258 || ofproto_rule_is_hidden(rule
)
6259 || (op
->type
== OFOPERATION_MODIFY
6261 && rule
->flow_cookie
== op
->flow_cookie
))) {
6262 /* Check that we can just cast from ofoperation_type to
6263 * nx_flow_update_event. */
6264 enum nx_flow_update_event event_type
;
6267 case OFOPERATION_ADD
:
6268 case OFOPERATION_REPLACE
:
6269 event_type
= NXFME_ADDED
;
6272 case OFOPERATION_DELETE
:
6273 event_type
= NXFME_DELETED
;
6276 case OFOPERATION_MODIFY
:
6277 event_type
= NXFME_MODIFIED
;
6284 ofmonitor_report(ofproto
->connmgr
, rule
, event_type
,
6285 op
->reason
, abbrev_ofconn
, abbrev_xid
);
6288 rule
->pending
= NULL
;
6291 case OFOPERATION_ADD
:
6295 vid_mask
= minimask_get_vid_mask(&rule
->cr
.match
.mask
);
6296 if (vid_mask
== VLAN_VID_MASK
) {
6297 if (ofproto
->vlan_bitmap
) {
6298 uint16_t vid
= miniflow_get_vid(&rule
->cr
.match
.flow
);
6299 if (!bitmap_is_set(ofproto
->vlan_bitmap
, vid
)) {
6300 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
6301 ofproto
->vlans_changed
= true;
6304 ofproto
->vlans_changed
= true;
6308 oftable_remove_rule(rule
);
6309 ofproto_rule_unref(rule
);
6313 case OFOPERATION_DELETE
:
6314 ovs_assert(!op
->error
);
6315 ofproto_rule_unref(rule
);
6319 case OFOPERATION_MODIFY
:
6320 case OFOPERATION_REPLACE
:
6322 long long int now
= time_msec();
6324 ovs_mutex_lock(&rule
->mutex
);
6325 rule
->modified
= now
;
6326 if (op
->type
== OFOPERATION_REPLACE
) {
6327 rule
->created
= now
;
6329 ovs_mutex_unlock(&rule
->mutex
);
6331 ofproto_rule_change_cookie(ofproto
, rule
, op
->flow_cookie
);
6332 ovs_mutex_lock(&rule
->mutex
);
6333 rule
->idle_timeout
= op
->idle_timeout
;
6334 rule
->hard_timeout
= op
->hard_timeout
;
6335 ovs_mutex_unlock(&rule
->mutex
);
6337 const struct rule_actions
*old_actions
;
6339 ovs_mutex_lock(&rule
->mutex
);
6340 old_actions
= rule_get_actions(rule
);
6341 ovsrcu_set(&rule
->actions
, op
->actions
);
6342 ovs_mutex_unlock(&rule
->mutex
);
6345 rule_actions_destroy(old_actions
);
6347 rule
->flags
= op
->flags
;
6355 ofoperation_destroy(op
);
6358 ofmonitor_flush(ofproto
->connmgr
);
6360 if (!list_is_empty(&group
->ofproto_node
)) {
6361 ovs_assert(ofproto
->n_pending
> 0);
6362 ofproto
->n_pending
--;
6363 list_remove(&group
->ofproto_node
);
6365 if (!list_is_empty(&group
->ofconn_node
)) {
6366 list_remove(&group
->ofconn_node
);
6368 ofconn_send_error(group
->ofconn
, group
->request
, error
);
6370 connmgr_retry(ofproto
->connmgr
);
6372 free(group
->request
);
6376 /* Initiates a new operation on 'rule', of the specified 'type', within
6377 * 'group'. Prior to calling, 'rule' must not have any pending operation.
6379 * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that
6380 * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0).
6382 * Returns the newly created ofoperation (which is also available as
6383 * rule->pending). */
6384 static struct ofoperation
*
6385 ofoperation_create(struct ofopgroup
*group
, struct rule
*rule
,
6386 enum ofoperation_type type
,
6387 enum ofp_flow_removed_reason reason
)
6388 OVS_REQUIRES(ofproto_mutex
)
6390 struct ofproto
*ofproto
= group
->ofproto
;
6391 struct ofoperation
*op
;
6393 ovs_assert(!rule
->pending
);
6395 op
= rule
->pending
= xzalloc(sizeof *op
);
6397 list_push_back(&group
->ops
, &op
->group_node
);
6400 op
->reason
= reason
;
6401 op
->flow_cookie
= rule
->flow_cookie
;
6402 ovs_mutex_lock(&rule
->mutex
);
6403 op
->idle_timeout
= rule
->idle_timeout
;
6404 op
->hard_timeout
= rule
->hard_timeout
;
6405 ovs_mutex_unlock(&rule
->mutex
);
6406 op
->flags
= rule
->flags
;
6410 if (type
== OFOPERATION_DELETE
) {
6411 hmap_insert(&ofproto
->deletions
, &op
->hmap_node
,
6412 cls_rule_hash(&rule
->cr
, rule
->table_id
));
6419 ofoperation_destroy(struct ofoperation
*op
)
6420 OVS_REQUIRES(ofproto_mutex
)
6422 struct ofopgroup
*group
= op
->group
;
6425 op
->rule
->pending
= NULL
;
6427 if (op
->type
== OFOPERATION_DELETE
) {
6428 hmap_remove(&group
->ofproto
->deletions
, &op
->hmap_node
);
6430 list_remove(&op
->group_node
);
6431 rule_actions_destroy(op
->actions
);
6435 /* Indicates that 'op' completed with status 'error', which is either 0 to
6436 * indicate success or an OpenFlow error code on failure.
6438 * If 'error' is 0, indicating success, the operation will be committed
6439 * permanently to the flow table.
6441 * If 'error' is nonzero, then generally the operation will be rolled back:
6443 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
6444 * restores the original rule. The caller must have uninitialized any
6445 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
6446 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
6447 * and 7 for the new rule, calling its ->rule_dealloc() function.
6449 * - If 'op' is a "modify flow" operation, ofproto restores the original
6452 * - 'op' must not be a "delete flow" operation. Removing a rule is not
6453 * allowed to fail. It must always succeed.
6455 * Please see the large comment in ofproto/ofproto-provider.h titled
6456 * "Asynchronous Operation Support" for more information. */
6458 ofoperation_complete(struct ofoperation
*op
, enum ofperr error
)
6460 struct ofopgroup
*group
= op
->group
;
6462 ovs_assert(group
->n_running
> 0);
6463 ovs_assert(!error
|| op
->type
!= OFOPERATION_DELETE
);
6466 if (!--group
->n_running
&& !list_is_empty(&group
->ofproto_node
)) {
6467 /* This function can be called from ->rule_construct(), in which case
6468 * ofproto_mutex is held, or it can be called from ->run(), in which
6469 * case ofproto_mutex is not held. But only in the latter case can we
6470 * arrive here, so we can safely take ofproto_mutex now. */
6471 ovs_mutex_lock(&ofproto_mutex
);
6472 ovs_assert(op
->rule
->pending
== op
);
6473 ofopgroup_complete(group
);
6474 ovs_mutex_unlock(&ofproto_mutex
);
6479 pick_datapath_id(const struct ofproto
*ofproto
)
6481 const struct ofport
*port
;
6483 port
= ofproto_get_port(ofproto
, OFPP_LOCAL
);
6485 uint8_t ea
[ETH_ADDR_LEN
];
6488 error
= netdev_get_etheraddr(port
->netdev
, ea
);
6490 return eth_addr_to_uint64(ea
);
6492 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6493 ofproto
->name
, netdev_get_name(port
->netdev
),
6494 ovs_strerror(error
));
6496 return ofproto
->fallback_dpid
;
6500 pick_fallback_dpid(void)
6502 uint8_t ea
[ETH_ADDR_LEN
];
6503 eth_addr_nicira_random(ea
);
6504 return eth_addr_to_uint64(ea
);
6507 /* Table overflow policy. */
6509 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6510 * to NULL if the table is not configured to evict rules or if the table
6511 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6512 * or with no timeouts are not evictable.) */
6514 choose_rule_to_evict(struct oftable
*table
, struct rule
**rulep
)
6515 OVS_REQUIRES(ofproto_mutex
)
6517 struct eviction_group
*evg
;
6520 if (!table
->eviction_fields
) {
6524 /* In the common case, the outer and inner loops here will each be entered
6527 * - The inner loop normally "return"s in its first iteration. If the
6528 * eviction group has any evictable rules, then it always returns in
6531 * - The outer loop only iterates more than once if the largest eviction
6532 * group has no evictable rules.
6534 * - The outer loop can exit only if table's 'max_flows' is all filled up
6535 * by unevictable rules. */
6536 HEAP_FOR_EACH (evg
, size_node
, &table
->eviction_groups_by_size
) {
6539 HEAP_FOR_EACH (rule
, evg_node
, &evg
->rules
) {
6548 /* Searches 'ofproto' for tables that have more flows than their configured
6549 * maximum and that have flow eviction enabled, and evicts as many flows as
6550 * necessary and currently feasible from them.
6552 * This triggers only when an OpenFlow table has N flows in it and then the
6553 * client configures a maximum number of flows less than N. */
6555 ofproto_evict(struct ofproto
*ofproto
)
6557 struct oftable
*table
;
6559 ovs_mutex_lock(&ofproto_mutex
);
6560 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
6561 evict_rules_from_table(ofproto
, table
, 0);
6563 ovs_mutex_unlock(&ofproto_mutex
);
6566 /* Eviction groups. */
6568 /* Returns the priority to use for an eviction_group that contains 'n_rules'
6569 * rules. The priority contains low-order random bits to ensure that eviction
6570 * groups with the same number of rules are prioritized randomly. */
6572 eviction_group_priority(size_t n_rules
)
6574 uint16_t size
= MIN(UINT16_MAX
, n_rules
);
6575 return (size
<< 16) | random_uint16();
6578 /* Updates 'evg', an eviction_group within 'table', following a change that
6579 * adds or removes rules in 'evg'. */
6581 eviction_group_resized(struct oftable
*table
, struct eviction_group
*evg
)
6582 OVS_REQUIRES(ofproto_mutex
)
6584 heap_change(&table
->eviction_groups_by_size
, &evg
->size_node
,
6585 eviction_group_priority(heap_count(&evg
->rules
)));
6588 /* Destroys 'evg', an eviction_group within 'table':
6590 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
6591 * rules themselves, just removes them from the eviction group.)
6593 * - Removes 'evg' from 'table'.
6597 eviction_group_destroy(struct oftable
*table
, struct eviction_group
*evg
)
6598 OVS_REQUIRES(ofproto_mutex
)
6600 while (!heap_is_empty(&evg
->rules
)) {
6603 rule
= CONTAINER_OF(heap_pop(&evg
->rules
), struct rule
, evg_node
);
6604 rule
->eviction_group
= NULL
;
6606 hmap_remove(&table
->eviction_groups_by_id
, &evg
->id_node
);
6607 heap_remove(&table
->eviction_groups_by_size
, &evg
->size_node
);
6608 heap_destroy(&evg
->rules
);
6612 /* Removes 'rule' from its eviction group, if any. */
6614 eviction_group_remove_rule(struct rule
*rule
)
6615 OVS_REQUIRES(ofproto_mutex
)
6617 if (rule
->eviction_group
) {
6618 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
6619 struct eviction_group
*evg
= rule
->eviction_group
;
6621 rule
->eviction_group
= NULL
;
6622 heap_remove(&evg
->rules
, &rule
->evg_node
);
6623 if (heap_is_empty(&evg
->rules
)) {
6624 eviction_group_destroy(table
, evg
);
6626 eviction_group_resized(table
, evg
);
6631 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
6632 * returns the hash value. */
6634 eviction_group_hash_rule(struct rule
*rule
)
6635 OVS_REQUIRES(ofproto_mutex
)
6637 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
6638 const struct mf_subfield
*sf
;
6642 hash
= table
->eviction_group_id_basis
;
6643 miniflow_expand(&rule
->cr
.match
.flow
, &flow
);
6644 for (sf
= table
->eviction_fields
;
6645 sf
< &table
->eviction_fields
[table
->n_eviction_fields
];
6648 if (mf_are_prereqs_ok(sf
->field
, &flow
)) {
6649 union mf_value value
;
6651 mf_get_value(sf
->field
, &flow
, &value
);
6653 bitwise_zero(&value
, sf
->field
->n_bytes
, 0, sf
->ofs
);
6655 if (sf
->ofs
+ sf
->n_bits
< sf
->field
->n_bytes
* 8) {
6656 unsigned int start
= sf
->ofs
+ sf
->n_bits
;
6657 bitwise_zero(&value
, sf
->field
->n_bytes
, start
,
6658 sf
->field
->n_bytes
* 8 - start
);
6660 hash
= hash_bytes(&value
, sf
->field
->n_bytes
, hash
);
6662 hash
= hash_int(hash
, 0);
6669 /* Returns an eviction group within 'table' with the given 'id', creating one
6671 static struct eviction_group
*
6672 eviction_group_find(struct oftable
*table
, uint32_t id
)
6673 OVS_REQUIRES(ofproto_mutex
)
6675 struct eviction_group
*evg
;
6677 HMAP_FOR_EACH_WITH_HASH (evg
, id_node
, id
, &table
->eviction_groups_by_id
) {
6681 evg
= xmalloc(sizeof *evg
);
6682 hmap_insert(&table
->eviction_groups_by_id
, &evg
->id_node
, id
);
6683 heap_insert(&table
->eviction_groups_by_size
, &evg
->size_node
,
6684 eviction_group_priority(0));
6685 heap_init(&evg
->rules
);
6690 /* Returns an eviction priority for 'rule'. The return value should be
6691 * interpreted so that higher priorities make a rule more attractive candidates
6693 * Called only if have a timeout. */
6695 rule_eviction_priority(struct ofproto
*ofproto
, struct rule
*rule
)
6696 OVS_REQUIRES(ofproto_mutex
)
6698 long long int expiration
= LLONG_MAX
;
6699 long long int modified
;
6700 uint32_t expiration_offset
;
6702 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
6703 ovs_mutex_lock(&rule
->mutex
);
6704 modified
= rule
->modified
;
6705 ovs_mutex_unlock(&rule
->mutex
);
6707 if (rule
->hard_timeout
) {
6708 expiration
= modified
+ rule
->hard_timeout
* 1000;
6710 if (rule
->idle_timeout
) {
6711 uint64_t packets
, bytes
;
6713 long long int idle_expiration
;
6715 ofproto
->ofproto_class
->rule_get_stats(rule
, &packets
, &bytes
, &used
);
6716 idle_expiration
= used
+ rule
->idle_timeout
* 1000;
6717 expiration
= MIN(expiration
, idle_expiration
);
6720 if (expiration
== LLONG_MAX
) {
6724 /* Calculate the time of expiration as a number of (approximate) seconds
6725 * after program startup.
6727 * This should work OK for program runs that last UINT32_MAX seconds or
6728 * less. Therefore, please restart OVS at least once every 136 years. */
6729 expiration_offset
= (expiration
>> 10) - (time_boot_msec() >> 10);
6731 /* Invert the expiration offset because we're using a max-heap. */
6732 return UINT32_MAX
- expiration_offset
;
6735 /* Adds 'rule' to an appropriate eviction group for its oftable's
6736 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
6737 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
6740 * The caller must ensure that 'rule' is not already in an eviction group. */
6742 eviction_group_add_rule(struct rule
*rule
)
6743 OVS_REQUIRES(ofproto_mutex
)
6745 struct ofproto
*ofproto
= rule
->ofproto
;
6746 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
6749 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
6750 * so no additional protection is needed. */
6751 has_timeout
= rule
->hard_timeout
|| rule
->idle_timeout
;
6753 if (table
->eviction_fields
&& has_timeout
) {
6754 struct eviction_group
*evg
;
6756 evg
= eviction_group_find(table
, eviction_group_hash_rule(rule
));
6758 rule
->eviction_group
= evg
;
6759 heap_insert(&evg
->rules
, &rule
->evg_node
,
6760 rule_eviction_priority(ofproto
, rule
));
6761 eviction_group_resized(table
, evg
);
6767 /* Initializes 'table'. */
6769 oftable_init(struct oftable
*table
)
6771 memset(table
, 0, sizeof *table
);
6772 classifier_init(&table
->cls
, flow_segment_u32s
);
6773 table
->max_flows
= UINT_MAX
;
6774 atomic_init(&table
->config
, (unsigned int)OFPROTO_TABLE_MISS_DEFAULT
);
6777 /* Destroys 'table', including its classifier and eviction groups.
6779 * The caller is responsible for freeing 'table' itself. */
6781 oftable_destroy(struct oftable
*table
)
6783 fat_rwlock_rdlock(&table
->cls
.rwlock
);
6784 ovs_assert(classifier_is_empty(&table
->cls
));
6785 fat_rwlock_unlock(&table
->cls
.rwlock
);
6786 oftable_disable_eviction(table
);
6787 classifier_destroy(&table
->cls
);
6791 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
6792 * string, then 'table' will use its default name.
6794 * This only affects the name exposed for a table exposed through the OpenFlow
6795 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
6797 oftable_set_name(struct oftable
*table
, const char *name
)
6799 if (name
&& name
[0]) {
6800 int len
= strnlen(name
, OFP_MAX_TABLE_NAME_LEN
);
6801 if (!table
->name
|| strncmp(name
, table
->name
, len
)) {
6803 table
->name
= xmemdup0(name
, len
);
6811 /* oftables support a choice of two policies when adding a rule would cause the
6812 * number of flows in the table to exceed the configured maximum number: either
6813 * they can refuse to add the new flow or they can evict some existing flow.
6814 * This function configures the former policy on 'table'. */
6816 oftable_disable_eviction(struct oftable
*table
)
6817 OVS_REQUIRES(ofproto_mutex
)
6819 if (table
->eviction_fields
) {
6820 struct eviction_group
*evg
, *next
;
6822 HMAP_FOR_EACH_SAFE (evg
, next
, id_node
,
6823 &table
->eviction_groups_by_id
) {
6824 eviction_group_destroy(table
, evg
);
6826 hmap_destroy(&table
->eviction_groups_by_id
);
6827 heap_destroy(&table
->eviction_groups_by_size
);
6829 free(table
->eviction_fields
);
6830 table
->eviction_fields
= NULL
;
6831 table
->n_eviction_fields
= 0;
6835 /* oftables support a choice of two policies when adding a rule would cause the
6836 * number of flows in the table to exceed the configured maximum number: either
6837 * they can refuse to add the new flow or they can evict some existing flow.
6838 * This function configures the latter policy on 'table', with fairness based
6839 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
6840 * 'n_fields' as 0 disables fairness.) */
6842 oftable_enable_eviction(struct oftable
*table
,
6843 const struct mf_subfield
*fields
, size_t n_fields
)
6844 OVS_REQUIRES(ofproto_mutex
)
6846 struct cls_cursor cursor
;
6849 if (table
->eviction_fields
6850 && n_fields
== table
->n_eviction_fields
6852 || !memcmp(fields
, table
->eviction_fields
,
6853 n_fields
* sizeof *fields
))) {
6858 oftable_disable_eviction(table
);
6860 table
->n_eviction_fields
= n_fields
;
6861 table
->eviction_fields
= xmemdup(fields
, n_fields
* sizeof *fields
);
6863 table
->eviction_group_id_basis
= random_uint32();
6864 hmap_init(&table
->eviction_groups_by_id
);
6865 heap_init(&table
->eviction_groups_by_size
);
6867 fat_rwlock_rdlock(&table
->cls
.rwlock
);
6868 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
6869 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
6870 eviction_group_add_rule(rule
);
6872 fat_rwlock_unlock(&table
->cls
.rwlock
);
6875 /* Removes 'rule' from the oftable that contains it. */
6877 oftable_remove_rule__(struct ofproto
*ofproto
, struct rule
*rule
)
6878 OVS_REQUIRES(ofproto_mutex
)
6880 struct classifier
*cls
= &ofproto
->tables
[rule
->table_id
].cls
;
6882 fat_rwlock_wrlock(&cls
->rwlock
);
6883 classifier_remove(cls
, CONST_CAST(struct cls_rule
*, &rule
->cr
));
6884 fat_rwlock_unlock(&cls
->rwlock
);
6886 cookies_remove(ofproto
, rule
);
6888 eviction_group_remove_rule(rule
);
6889 if (!list_is_empty(&rule
->expirable
)) {
6890 list_remove(&rule
->expirable
);
6892 if (!list_is_empty(&rule
->meter_list_node
)) {
6893 list_remove(&rule
->meter_list_node
);
6894 list_init(&rule
->meter_list_node
);
6899 oftable_remove_rule(struct rule
*rule
)
6900 OVS_REQUIRES(ofproto_mutex
)
6902 oftable_remove_rule__(rule
->ofproto
, rule
);
6905 /* Inserts 'rule' into its oftable, which must not already contain any rule for
6906 * the same cls_rule. */
6908 oftable_insert_rule(struct rule
*rule
)
6909 OVS_REQUIRES(ofproto_mutex
)
6911 struct ofproto
*ofproto
= rule
->ofproto
;
6912 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
6913 const struct rule_actions
*actions
;
6916 ovs_mutex_lock(&rule
->mutex
);
6917 may_expire
= rule
->hard_timeout
|| rule
->idle_timeout
;
6918 ovs_mutex_unlock(&rule
->mutex
);
6921 list_insert(&ofproto
->expirable
, &rule
->expirable
);
6924 cookies_insert(ofproto
, rule
);
6926 actions
= rule_get_actions(rule
);
6927 if (actions
->provider_meter_id
!= UINT32_MAX
) {
6928 uint32_t meter_id
= ofpacts_get_meter(actions
->ofpacts
,
6929 actions
->ofpacts_len
);
6930 struct meter
*meter
= ofproto
->meters
[meter_id
];
6931 list_insert(&meter
->rules
, &rule
->meter_list_node
);
6933 fat_rwlock_wrlock(&table
->cls
.rwlock
);
6934 classifier_insert(&table
->cls
, CONST_CAST(struct cls_rule
*, &rule
->cr
));
6935 fat_rwlock_unlock(&table
->cls
.rwlock
);
6936 eviction_group_add_rule(rule
);
6939 /* unixctl commands. */
6942 ofproto_lookup(const char *name
)
6944 struct ofproto
*ofproto
;
6946 HMAP_FOR_EACH_WITH_HASH (ofproto
, hmap_node
, hash_string(name
, 0),
6948 if (!strcmp(ofproto
->name
, name
)) {
6956 ofproto_unixctl_list(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
6957 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
6959 struct ofproto
*ofproto
;
6963 HMAP_FOR_EACH (ofproto
, hmap_node
, &all_ofprotos
) {
6964 ds_put_format(&results
, "%s\n", ofproto
->name
);
6966 unixctl_command_reply(conn
, ds_cstr(&results
));
6967 ds_destroy(&results
);
6971 ofproto_unixctl_init(void)
6973 static bool registered
;
6979 unixctl_command_register("ofproto/list", "", 0, 0,
6980 ofproto_unixctl_list
, NULL
);
6983 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6985 * This is deprecated. It is only for compatibility with broken device drivers
6986 * in old versions of Linux that do not properly support VLANs when VLAN
6987 * devices are not used. When broken device drivers are no longer in
6988 * widespread use, we will delete these interfaces. */
6990 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
6991 * (exactly) by an OpenFlow rule in 'ofproto'. */
6993 ofproto_get_vlan_usage(struct ofproto
*ofproto
, unsigned long int *vlan_bitmap
)
6995 const struct oftable
*oftable
;
6997 free(ofproto
->vlan_bitmap
);
6998 ofproto
->vlan_bitmap
= bitmap_allocate(4096);
6999 ofproto
->vlans_changed
= false;
7001 OFPROTO_FOR_EACH_TABLE (oftable
, ofproto
) {
7002 const struct cls_subtable
*table
;
7004 fat_rwlock_rdlock(&oftable
->cls
.rwlock
);
7005 HMAP_FOR_EACH (table
, hmap_node
, &oftable
->cls
.subtables
) {
7006 if (minimask_get_vid_mask(&table
->mask
) == VLAN_VID_MASK
) {
7007 const struct cls_rule
*rule
;
7009 HMAP_FOR_EACH (rule
, hmap_node
, &table
->rules
) {
7010 uint16_t vid
= miniflow_get_vid(&rule
->match
.flow
);
7011 bitmap_set1(vlan_bitmap
, vid
);
7012 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
7016 fat_rwlock_unlock(&oftable
->cls
.rwlock
);
7020 /* Returns true if new VLANs have come into use by the flow table since the
7021 * last call to ofproto_get_vlan_usage().
7023 * We don't track when old VLANs stop being used. */
7025 ofproto_has_vlan_usage_changed(const struct ofproto
*ofproto
)
7027 return ofproto
->vlans_changed
;
7030 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
7031 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
7032 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
7033 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
7034 * then the VLAN device is un-enslaved. */
7036 ofproto_port_set_realdev(struct ofproto
*ofproto
, ofp_port_t vlandev_ofp_port
,
7037 ofp_port_t realdev_ofp_port
, int vid
)
7039 struct ofport
*ofport
;
7042 ovs_assert(vlandev_ofp_port
!= realdev_ofp_port
);
7044 ofport
= ofproto_get_port(ofproto
, vlandev_ofp_port
);
7046 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16
,
7047 ofproto
->name
, vlandev_ofp_port
);
7051 if (!ofproto
->ofproto_class
->set_realdev
) {
7052 if (!vlandev_ofp_port
) {
7055 VLOG_WARN("%s: vlan splinters not supported", ofproto
->name
);
7059 error
= ofproto
->ofproto_class
->set_realdev(ofport
, realdev_ofp_port
, vid
);
7061 VLOG_WARN("%s: setting realdev on port %"PRIu16
" (%s) failed (%s)",
7062 ofproto
->name
, vlandev_ofp_port
,
7063 netdev_get_name(ofport
->netdev
), ovs_strerror(error
));