2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 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"
49 #include "poll-loop.h"
57 #include "unaligned.h"
61 VLOG_DEFINE_THIS_MODULE(ofproto);
63 COVERAGE_DEFINE(ofproto_flush);
64 COVERAGE_DEFINE(ofproto_packet_out);
65 COVERAGE_DEFINE(ofproto_queue_req);
66 COVERAGE_DEFINE(ofproto_recv_openflow);
67 COVERAGE_DEFINE(ofproto_reinit_ports);
68 COVERAGE_DEFINE(ofproto_update_port);
71 S_OPENFLOW, /* Processing OpenFlow commands. */
72 S_EVICT, /* Evicting flows from over-limit tables. */
73 S_FLUSH, /* Deleting all flow table rules. */
76 enum ofoperation_type {
83 /* A single OpenFlow request can execute any number of operations. The
84 * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the
85 * ofconn to which an error reply should be sent if necessary.
87 * ofproto initiates some operations internally. These operations are still
88 * assigned to groups but will not have an associated ofconn. */
90 struct ofproto *ofproto; /* Owning ofproto. */
91 struct list ofproto_node; /* In ofproto's "pending" list. */
92 struct list ops; /* List of "struct ofoperation"s. */
93 int n_running; /* Number of ops still pending. */
95 /* Data needed to send OpenFlow reply on failure or to send a buffered
98 * If list_is_empty(ofconn_node) then this ofopgroup never had an
99 * associated ofconn or its ofconn's connection dropped after it initiated
100 * the operation. In the latter case 'ofconn' is a wild pointer that
101 * refers to freed memory, so the 'ofconn' member must be used only if
102 * !list_is_empty(ofconn_node).
104 struct list ofconn_node; /* In ofconn's list of pending opgroups. */
105 struct ofconn *ofconn; /* ofconn for reply (but see note above). */
106 struct ofp_header *request; /* Original request (truncated at 64 bytes). */
107 uint32_t buffer_id; /* Buffer id from original request. */
110 static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *);
111 static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *,
112 const struct ofp_header *,
114 static void ofopgroup_submit(struct ofopgroup *);
115 static void ofopgroup_complete(struct ofopgroup *);
117 /* A single flow table operation. */
119 struct ofopgroup *group; /* Owning group. */
120 struct list group_node; /* In ofopgroup's "ops" list. */
121 struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */
122 struct rule *rule; /* Rule being operated upon. */
123 enum ofoperation_type type; /* Type of operation. */
125 /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions
127 struct rule_actions *actions;
129 /* OFOPERATION_DELETE. */
130 enum ofp_flow_removed_reason reason; /* Reason flow was removed. */
132 ovs_be64 flow_cookie; /* Rule's old flow cookie. */
133 uint16_t idle_timeout; /* Rule's old idle timeout. */
134 uint16_t hard_timeout; /* Rule's old hard timeout. */
135 enum ofputil_flow_mod_flags flags; /* Rule's old flags. */
136 enum ofperr error; /* 0 if no error. */
139 static struct ofoperation *ofoperation_create(struct ofopgroup *,
141 enum ofoperation_type,
142 enum ofp_flow_removed_reason);
143 static void ofoperation_destroy(struct ofoperation *);
146 static void oftable_init(struct oftable *);
147 static void oftable_destroy(struct oftable *);
149 static void oftable_set_name(struct oftable *, const char *name);
151 static void oftable_disable_eviction(struct oftable *);
152 static void oftable_enable_eviction(struct oftable *,
153 const struct mf_subfield *fields,
156 static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex);
157 static void oftable_remove_rule__(struct ofproto *, struct rule *)
158 OVS_REQUIRES(ofproto_mutex);
159 static void oftable_insert_rule(struct rule *);
161 /* A set of rules within a single OpenFlow table (oftable) that have the same
162 * values for the oftable's eviction_fields. A rule to be evicted, when one is
163 * needed, is taken from the eviction group that contains the greatest number
166 * An oftable owns any number of eviction groups, each of which contains any
169 * Membership in an eviction group is imprecise, based on the hash of the
170 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
171 * That is, if two rules have different eviction_fields, but those
172 * eviction_fields hash to the same value, then they will belong to the same
173 * eviction_group anyway.
175 * (When eviction is not enabled on an oftable, we don't track any eviction
176 * groups, to save time and space.) */
177 struct eviction_group {
178 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
179 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
180 struct heap rules; /* Contains "struct rule"s. */
183 static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep);
184 static void ofproto_evict(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
185 static uint32_t rule_eviction_priority(struct rule *);
186 static void eviction_group_add_rule(struct rule *);
187 static void eviction_group_remove_rule(struct rule *);
189 /* Criteria that flow_mod and other operations use for selecting rules on
190 * which to operate. */
191 struct rule_criteria {
192 /* An OpenFlow table or 255 for all tables. */
195 /* OpenFlow matching criteria. Interpreted different in "loose" way by
196 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
197 * defined in the OpenFlow spec. */
200 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
201 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
202 * The rule will not be selected if M is 1 and B != C. */
204 ovs_be64 cookie_mask;
206 /* Selection based on actions within a rule:
208 * If out_port != OFPP_ANY, selects only rules that output to out_port.
209 * If out_group != OFPG_ALL, select only rules that output to out_group. */
214 static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
215 const struct match *match,
216 unsigned int priority,
217 ovs_be64 cookie, ovs_be64 cookie_mask,
218 ofp_port_t out_port, uint32_t out_group);
219 static void rule_criteria_destroy(struct rule_criteria *);
221 /* A packet that needs to be passed to rule_execute().
223 * (We can't do this immediately from ofopgroup_complete() because that holds
224 * ofproto_mutex, which rule_execute() needs released.) */
225 struct rule_execute {
226 struct list list_node; /* In struct ofproto's "rule_executes" list. */
227 struct rule *rule; /* Owns a reference to the rule. */
229 struct ofpbuf *packet; /* Owns the packet. */
232 static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
233 static void destroy_rule_executes(struct ofproto *);
236 static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
237 static void ofport_destroy(struct ofport *);
239 static void update_port(struct ofproto *, const char *devname);
240 static int init_ports(struct ofproto *);
241 static void reinit_ports(struct ofproto *);
243 static long long int ofport_get_usage(const struct ofproto *,
244 ofp_port_t ofp_port);
245 static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
246 long long int last_used);
247 static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
251 * Keeps track of the currently used and recently used ofport values and is
252 * used to prevent immediate recycling of ofport values. */
253 struct ofport_usage {
254 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
255 ofp_port_t ofp_port; /* OpenFlow port number. */
256 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
257 represents in-use ofports. */
261 static void ofproto_rule_destroy__(struct rule *);
262 static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
263 static bool rule_is_modifiable(const struct rule *);
266 static enum ofperr add_flow(struct ofproto *, struct ofconn *,
267 struct ofputil_flow_mod *,
268 const struct ofp_header *);
269 static enum ofperr modify_flows__(struct ofproto *, struct ofconn *,
270 struct ofputil_flow_mod *,
271 const struct ofp_header *,
272 const struct rule_collection *);
273 static void delete_flow__(struct rule *rule, struct ofopgroup *,
274 enum ofp_flow_removed_reason)
275 OVS_REQUIRES(ofproto_mutex);
276 static bool ofproto_group_exists__(const struct ofproto *ofproto,
278 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
279 static bool ofproto_group_exists(const struct ofproto *ofproto,
281 OVS_EXCLUDED(ofproto->groups_rwlock);
282 static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
283 static bool handle_openflow(struct ofconn *, const struct ofpbuf *);
284 static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *,
285 struct ofputil_flow_mod *,
286 const struct ofp_header *)
287 OVS_EXCLUDED(ofproto_mutex);
288 static void calc_duration(long long int start, long long int now,
289 uint32_t *sec, uint32_t *nsec);
292 static uint64_t pick_datapath_id(const struct ofproto *);
293 static uint64_t pick_fallback_dpid(void);
294 static void ofproto_destroy__(struct ofproto *);
295 static void update_mtu(struct ofproto *, struct ofport *);
296 static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
299 static void ofproto_unixctl_init(void);
301 /* All registered ofproto classes, in probe order. */
302 static const struct ofproto_class **ofproto_classes;
303 static size_t n_ofproto_classes;
304 static size_t allocated_ofproto_classes;
306 /* Global lock that protects all flow table operations. */
307 struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
309 unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
310 enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO;
312 size_t n_handlers, n_revalidators;
314 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
315 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
317 /* Initial mappings of port to OpenFlow number mappings. */
318 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
320 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
322 /* The default value of true waits for flow restore. */
323 static bool flow_restore_wait = true;
325 /* Must be called to initialize the ofproto library.
327 * The caller may pass in 'iface_hints', which contains an shash of
328 * "iface_hint" elements indexed by the interface's name. The provider
329 * may use these hints to describe the startup configuration in order to
330 * reinitialize its state. The caller owns the provided data, so a
331 * provider will make copies of anything required. An ofproto provider
332 * will remove any existing state that is not described by the hint, and
333 * may choose to remove it all. */
335 ofproto_init(const struct shash *iface_hints)
337 struct shash_node *node;
340 ofproto_class_register(&ofproto_dpif_class);
342 /* Make a local copy, since we don't own 'iface_hints' elements. */
343 SHASH_FOR_EACH(node, iface_hints) {
344 const struct iface_hint *orig_hint = node->data;
345 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
346 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
348 new_hint->br_name = xstrdup(orig_hint->br_name);
349 new_hint->br_type = xstrdup(br_type);
350 new_hint->ofp_port = orig_hint->ofp_port;
352 shash_add(&init_ofp_ports, node->name, new_hint);
355 for (i = 0; i < n_ofproto_classes; i++) {
356 ofproto_classes[i]->init(&init_ofp_ports);
360 /* 'type' should be a normalized datapath type, as returned by
361 * ofproto_normalize_type(). Returns the corresponding ofproto_class
362 * structure, or a null pointer if there is none registered for 'type'. */
363 static const struct ofproto_class *
364 ofproto_class_find__(const char *type)
368 for (i = 0; i < n_ofproto_classes; i++) {
369 const struct ofproto_class *class = ofproto_classes[i];
374 class->enumerate_types(&types);
375 found = sset_contains(&types, type);
376 sset_destroy(&types);
382 VLOG_WARN("unknown datapath type %s", type);
386 /* Registers a new ofproto class. After successful registration, new ofprotos
387 * of that type can be created using ofproto_create(). */
389 ofproto_class_register(const struct ofproto_class *new_class)
393 for (i = 0; i < n_ofproto_classes; i++) {
394 if (ofproto_classes[i] == new_class) {
399 if (n_ofproto_classes >= allocated_ofproto_classes) {
400 ofproto_classes = x2nrealloc(ofproto_classes,
401 &allocated_ofproto_classes,
402 sizeof *ofproto_classes);
404 ofproto_classes[n_ofproto_classes++] = new_class;
408 /* Unregisters a datapath provider. 'type' must have been previously
409 * registered and not currently be in use by any ofprotos. After
410 * unregistration new datapaths of that type cannot be opened using
411 * ofproto_create(). */
413 ofproto_class_unregister(const struct ofproto_class *class)
417 for (i = 0; i < n_ofproto_classes; i++) {
418 if (ofproto_classes[i] == class) {
419 for (i++; i < n_ofproto_classes; i++) {
420 ofproto_classes[i - 1] = ofproto_classes[i];
426 VLOG_WARN("attempted to unregister an ofproto class that is not "
431 /* Clears 'types' and enumerates all registered ofproto types into it. The
432 * caller must first initialize the sset. */
434 ofproto_enumerate_types(struct sset *types)
439 for (i = 0; i < n_ofproto_classes; i++) {
440 ofproto_classes[i]->enumerate_types(types);
444 /* Returns the fully spelled out name for the given ofproto 'type'.
446 * Normalized type string can be compared with strcmp(). Unnormalized type
447 * string might be the same even if they have different spellings. */
449 ofproto_normalize_type(const char *type)
451 return type && type[0] ? type : "system";
454 /* Clears 'names' and enumerates the names of all known created ofprotos with
455 * the given 'type'. The caller must first initialize the sset. Returns 0 if
456 * successful, otherwise a positive errno value.
458 * Some kinds of datapaths might not be practically enumerable. This is not
459 * considered an error. */
461 ofproto_enumerate_names(const char *type, struct sset *names)
463 const struct ofproto_class *class = ofproto_class_find__(type);
464 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
468 ofproto_create(const char *datapath_name, const char *datapath_type,
469 struct ofproto **ofprotop)
471 const struct ofproto_class *class;
472 struct ofproto *ofproto;
478 ofproto_unixctl_init();
480 datapath_type = ofproto_normalize_type(datapath_type);
481 class = ofproto_class_find__(datapath_type);
483 VLOG_WARN("could not create datapath %s of unknown type %s",
484 datapath_name, datapath_type);
488 ofproto = class->alloc();
490 VLOG_ERR("failed to allocate datapath %s of type %s",
491 datapath_name, datapath_type);
496 ovs_mutex_lock(&ofproto_mutex);
497 memset(ofproto, 0, sizeof *ofproto);
498 ofproto->ofproto_class = class;
499 ofproto->name = xstrdup(datapath_name);
500 ofproto->type = xstrdup(datapath_type);
501 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
502 hash_string(ofproto->name, 0));
503 ofproto->datapath_id = 0;
504 ofproto->forward_bpdu = false;
505 ofproto->fallback_dpid = pick_fallback_dpid();
506 ofproto->mfr_desc = NULL;
507 ofproto->hw_desc = NULL;
508 ofproto->sw_desc = NULL;
509 ofproto->serial_desc = NULL;
510 ofproto->dp_desc = NULL;
511 ofproto->frag_handling = OFPC_FRAG_NORMAL;
512 hmap_init(&ofproto->ports);
513 hmap_init(&ofproto->ofport_usage);
514 shash_init(&ofproto->port_by_name);
515 simap_init(&ofproto->ofp_requests);
516 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
517 ofproto->eviction_group_timer = LLONG_MIN;
518 ofproto->tables = NULL;
519 ofproto->n_tables = 0;
520 hindex_init(&ofproto->cookies);
521 list_init(&ofproto->expirable);
522 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
523 ofproto->state = S_OPENFLOW;
524 list_init(&ofproto->pending);
525 ofproto->n_pending = 0;
526 hmap_init(&ofproto->deletions);
527 guarded_list_init(&ofproto->rule_executes);
528 ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0;
529 ofproto->first_op = ofproto->last_op = LLONG_MIN;
530 ofproto->next_op_report = LLONG_MAX;
531 ofproto->op_backoff = LLONG_MIN;
532 ofproto->vlan_bitmap = NULL;
533 ofproto->vlans_changed = false;
534 ofproto->min_mtu = INT_MAX;
535 ovs_rwlock_init(&ofproto->groups_rwlock);
536 hmap_init(&ofproto->groups);
537 ovs_mutex_unlock(&ofproto_mutex);
538 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
539 OFPGFC_SELECT_WEIGHT;
540 ofproto->ogf.max_groups[OFPGT11_ALL] = OFPG_MAX;
541 ofproto->ogf.max_groups[OFPGT11_SELECT] = OFPG_MAX;
542 ofproto->ogf.max_groups[OFPGT11_INDIRECT] = OFPG_MAX;
543 ofproto->ogf.max_groups[OFPGT11_FF] = OFPG_MAX;
544 ofproto->ogf.actions[0] =
545 (1 << OFPAT11_OUTPUT) |
546 (1 << OFPAT11_COPY_TTL_OUT) |
547 (1 << OFPAT11_COPY_TTL_IN) |
548 (1 << OFPAT11_SET_MPLS_TTL) |
549 (1 << OFPAT11_DEC_MPLS_TTL) |
550 (1 << OFPAT11_PUSH_VLAN) |
551 (1 << OFPAT11_POP_VLAN) |
552 (1 << OFPAT11_PUSH_MPLS) |
553 (1 << OFPAT11_POP_MPLS) |
554 (1 << OFPAT11_SET_QUEUE) |
555 (1 << OFPAT11_GROUP) |
556 (1 << OFPAT11_SET_NW_TTL) |
557 (1 << OFPAT11_DEC_NW_TTL) |
558 (1 << OFPAT12_SET_FIELD);
560 * (1 << OFPAT13_PUSH_PBB) |
561 * (1 << OFPAT13_POP_PBB) */
563 error = ofproto->ofproto_class->construct(ofproto);
565 VLOG_ERR("failed to open datapath %s: %s",
566 datapath_name, ovs_strerror(error));
567 ofproto_destroy__(ofproto);
571 /* Check that hidden tables, if any, are at the end. */
572 ovs_assert(ofproto->n_tables);
573 for (i = 0; i + 1 < ofproto->n_tables; i++) {
574 enum oftable_flags flags = ofproto->tables[i].flags;
575 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
577 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
580 ofproto->datapath_id = pick_datapath_id(ofproto);
583 /* Initialize meters table. */
584 if (ofproto->ofproto_class->meter_get_features) {
585 ofproto->ofproto_class->meter_get_features(ofproto,
586 &ofproto->meter_features);
588 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
590 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
591 * sizeof(struct meter *));
597 /* Must be called (only) by an ofproto implementation in its constructor
598 * function. See the large comment on 'construct' in struct ofproto_class for
601 ofproto_init_tables(struct ofproto *ofproto, int n_tables)
603 struct oftable *table;
605 ovs_assert(!ofproto->n_tables);
606 ovs_assert(n_tables >= 1 && n_tables <= 255);
608 ofproto->n_tables = n_tables;
609 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
610 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
615 /* To be optionally called (only) by an ofproto implementation in its
616 * constructor function. See the large comment on 'construct' in struct
617 * ofproto_class for details.
619 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
620 * will then ensure that actions passed into the ofproto implementation will
621 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
622 * function is not called, there will be no such restriction.
624 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
625 * the 'max_ports' restriction. */
627 ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
629 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
630 ofproto->max_ports = max_ports;
634 ofproto_get_datapath_id(const struct ofproto *ofproto)
636 return ofproto->datapath_id;
640 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
642 uint64_t old_dpid = p->datapath_id;
643 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
644 if (p->datapath_id != old_dpid) {
645 /* Force all active connections to reconnect, since there is no way to
646 * notify a controller that the datapath ID has changed. */
647 ofproto_reconnect_controllers(p);
652 ofproto_set_controllers(struct ofproto *p,
653 const struct ofproto_controller *controllers,
654 size_t n_controllers, uint32_t allowed_versions)
656 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
661 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
663 connmgr_set_fail_mode(p->connmgr, fail_mode);
666 /* Drops the connections between 'ofproto' and all of its controllers, forcing
667 * them to reconnect. */
669 ofproto_reconnect_controllers(struct ofproto *ofproto)
671 connmgr_reconnect(ofproto->connmgr);
674 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
675 * in-band control should guarantee access, in the same way that in-band
676 * control guarantees access to OpenFlow controllers. */
678 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
679 const struct sockaddr_in *extras, size_t n)
681 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
684 /* Sets the OpenFlow queue used by flows set up by in-band control on
685 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
686 * flows will use the default queue. */
688 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
690 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
693 /* Sets the number of flows at which eviction from the kernel flow table
696 ofproto_set_flow_limit(unsigned limit)
698 ofproto_flow_limit = limit;
701 /* Sets the path for handling flow misses. */
703 ofproto_set_flow_miss_model(unsigned model)
705 flow_miss_model = model;
708 /* If forward_bpdu is true, the NORMAL action will forward frames with
709 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
710 * the NORMAL action will drop these frames. */
712 ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
714 bool old_val = ofproto->forward_bpdu;
715 ofproto->forward_bpdu = forward_bpdu;
716 if (old_val != ofproto->forward_bpdu) {
717 if (ofproto->ofproto_class->forward_bpdu_changed) {
718 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
723 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
724 * 'idle_time', in seconds, and the maximum number of MAC table entries to
727 ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
730 if (ofproto->ofproto_class->set_mac_table_config) {
731 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
737 ofproto_set_threads(size_t n_handlers_, size_t n_revalidators_)
739 int threads = MAX(count_cpu_cores(), 2);
741 n_revalidators = n_revalidators_;
742 n_handlers = n_handlers_;
744 if (!n_revalidators) {
745 n_revalidators = n_handlers
746 ? MAX(threads - (int) n_handlers, 1)
751 n_handlers = MAX(threads - (int) n_revalidators, 1);
756 ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
759 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
763 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
765 return connmgr_set_snoops(ofproto->connmgr, snoops);
769 ofproto_set_netflow(struct ofproto *ofproto,
770 const struct netflow_options *nf_options)
772 if (nf_options && sset_is_empty(&nf_options->collectors)) {
776 if (ofproto->ofproto_class->set_netflow) {
777 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
779 return nf_options ? EOPNOTSUPP : 0;
784 ofproto_set_sflow(struct ofproto *ofproto,
785 const struct ofproto_sflow_options *oso)
787 if (oso && sset_is_empty(&oso->targets)) {
791 if (ofproto->ofproto_class->set_sflow) {
792 return ofproto->ofproto_class->set_sflow(ofproto, oso);
794 return oso ? EOPNOTSUPP : 0;
799 ofproto_set_ipfix(struct ofproto *ofproto,
800 const struct ofproto_ipfix_bridge_exporter_options *bo,
801 const struct ofproto_ipfix_flow_exporter_options *fo,
804 if (ofproto->ofproto_class->set_ipfix) {
805 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
807 return (bo || fo) ? EOPNOTSUPP : 0;
812 ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
814 flow_restore_wait = flow_restore_wait_db;
818 ofproto_get_flow_restore_wait(void)
820 return flow_restore_wait;
824 /* Spanning Tree Protocol (STP) configuration. */
826 /* Configures STP on 'ofproto' using the settings defined in 's'. If
827 * 's' is NULL, disables STP.
829 * Returns 0 if successful, otherwise a positive errno value. */
831 ofproto_set_stp(struct ofproto *ofproto,
832 const struct ofproto_stp_settings *s)
834 return (ofproto->ofproto_class->set_stp
835 ? ofproto->ofproto_class->set_stp(ofproto, s)
839 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
840 * 'enabled' member of 's' is false, then the other members are not
843 * Returns 0 if successful, otherwise a positive errno value. */
845 ofproto_get_stp_status(struct ofproto *ofproto,
846 struct ofproto_stp_status *s)
848 return (ofproto->ofproto_class->get_stp_status
849 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
853 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
854 * in 's'. The caller is responsible for assigning STP port numbers
855 * (using the 'port_num' member in the range of 1 through 255, inclusive)
856 * and ensuring there are no duplicates. If the 's' is NULL, then STP
857 * is disabled on the port.
859 * Returns 0 if successful, otherwise a positive errno value.*/
861 ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
862 const struct ofproto_port_stp_settings *s)
864 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
866 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
867 ofproto->name, ofp_port);
871 return (ofproto->ofproto_class->set_stp_port
872 ? ofproto->ofproto_class->set_stp_port(ofport, s)
876 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
877 * 's'. If the 'enabled' member in 's' is false, then the other members
878 * are not meaningful.
880 * Returns 0 if successful, otherwise a positive errno value.*/
882 ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
883 struct ofproto_port_stp_status *s)
885 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
887 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
888 "port %"PRIu16, ofproto->name, ofp_port);
892 return (ofproto->ofproto_class->get_stp_port_status
893 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
897 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
898 * 's'. If the 'enabled' member in 's' is false, then the other members
899 * are not meaningful.
901 * Returns 0 if successful, otherwise a positive errno value.*/
903 ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
904 struct ofproto_port_stp_stats *s)
906 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
908 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
909 "port %"PRIu16, ofproto->name, ofp_port);
913 return (ofproto->ofproto_class->get_stp_port_stats
914 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
918 /* Queue DSCP configuration. */
920 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
921 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
922 * to implement QoS. Instead, it is used to implement features which require
923 * knowledge of what queues exist on a port, and some basic information about
926 * Returns 0 if successful, otherwise a positive errno value. */
928 ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
929 const struct ofproto_port_queue *queues,
932 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
935 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
936 ofproto->name, ofp_port);
940 return (ofproto->ofproto_class->set_queues
941 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
945 /* Connectivity Fault Management configuration. */
947 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
949 ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
951 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
952 if (ofport && ofproto->ofproto_class->set_cfm) {
953 ofproto->ofproto_class->set_cfm(ofport, NULL);
957 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
958 * basic configuration from the configuration members in 'cfm', and the remote
959 * maintenance point ID from remote_mpid. Ignores the statistics members of
962 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
964 ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
965 const struct cfm_settings *s)
967 struct ofport *ofport;
970 ofport = ofproto_get_port(ofproto, ofp_port);
972 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
973 ofproto->name, ofp_port);
977 /* XXX: For configuration simplicity, we only support one remote_mpid
978 * outside of the CFM module. It's not clear if this is the correct long
979 * term solution or not. */
980 error = (ofproto->ofproto_class->set_cfm
981 ? ofproto->ofproto_class->set_cfm(ofport, s)
984 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
985 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
986 ovs_strerror(error));
990 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
991 * 'ofproto' does not have a port 'ofp_port'. */
993 ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
994 const struct smap *cfg)
996 struct ofport *ofport;
999 ofport = ofproto_get_port(ofproto, ofp_port);
1001 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1002 ofproto->name, ofp_port);
1006 error = (ofproto->ofproto_class->set_bfd
1007 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1010 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1011 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1012 ovs_strerror(error));
1016 /* Populates 'status' with key value pairs indicating the status of the BFD
1017 * session on 'ofp_port'. This information is intended to be populated in the
1018 * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in
1021 ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1022 struct smap *status)
1024 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1025 return (ofport && ofproto->ofproto_class->get_bfd_status
1026 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1030 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1031 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1032 * 0 if LACP partner information is not current (generally indicating a
1033 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1035 ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
1037 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1038 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1039 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
1045 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1046 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1047 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1048 * configuration plus, if there is more than one slave, a bonding
1051 * If 'aux' is already registered then this function updates its configuration
1052 * to 's'. Otherwise, this function registers a new bundle.
1054 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1057 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1058 const struct ofproto_bundle_settings *s)
1060 return (ofproto->ofproto_class->bundle_set
1061 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1065 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1066 * If no such bundle has been registered, this has no effect. */
1068 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
1070 return ofproto_bundle_register(ofproto, aux, NULL);
1074 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1075 * If 'aux' is already registered then this function updates its configuration
1076 * to 's'. Otherwise, this function registers a new mirror. */
1078 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1079 const struct ofproto_mirror_settings *s)
1081 return (ofproto->ofproto_class->mirror_set
1082 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1086 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1087 * If no mirror has been registered, this has no effect. */
1089 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
1091 return ofproto_mirror_register(ofproto, aux, NULL);
1094 /* Retrieves statistics from mirror associated with client data pointer
1095 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1096 * 'bytes', respectively. If a particular counters is not supported,
1097 * the appropriate argument is set to UINT64_MAX. */
1099 ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1100 uint64_t *packets, uint64_t *bytes)
1102 if (!ofproto->ofproto_class->mirror_get_stats) {
1103 *packets = *bytes = UINT64_MAX;
1107 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1111 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1112 * which all packets are flooded, instead of using MAC learning. If
1113 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1115 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1118 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
1120 return (ofproto->ofproto_class->set_flood_vlans
1121 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1125 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1126 * output for a mirror. */
1128 ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
1130 return (ofproto->ofproto_class->is_mirror_output_bundle
1131 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1135 /* Configuration of OpenFlow tables. */
1137 /* Returns the number of OpenFlow tables in 'ofproto'. */
1139 ofproto_get_n_tables(const struct ofproto *ofproto)
1141 return ofproto->n_tables;
1144 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1145 * settings from 's'. 'table_id' must be in the range 0 through the number of
1146 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1148 * For read-only tables, only the name may be configured. */
1150 ofproto_configure_table(struct ofproto *ofproto, int table_id,
1151 const struct ofproto_table_settings *s)
1153 struct oftable *table;
1155 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
1156 table = &ofproto->tables[table_id];
1158 oftable_set_name(table, s->name);
1160 if (table->flags & OFTABLE_READONLY) {
1165 oftable_enable_eviction(table, s->groups, s->n_groups);
1167 oftable_disable_eviction(table);
1170 table->max_flows = s->max_flows;
1171 ovs_rwlock_wrlock(&table->cls.rwlock);
1172 if (classifier_count(&table->cls) > table->max_flows
1173 && table->eviction_fields) {
1174 /* 'table' contains more flows than allowed. We might not be able to
1175 * evict them right away because of the asynchronous nature of flow
1176 * table changes. Schedule eviction for later. */
1177 switch (ofproto->state) {
1179 ofproto->state = S_EVICT;
1183 /* We're already deleting flows, nothing more to do. */
1188 classifier_set_prefix_fields(&table->cls,
1189 s->prefix_fields, s->n_prefix_fields);
1191 ovs_rwlock_unlock(&table->cls.rwlock);
1195 ofproto_has_snoops(const struct ofproto *ofproto)
1197 return connmgr_has_snoops(ofproto->connmgr);
1201 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
1203 connmgr_get_snoops(ofproto->connmgr, snoops);
1207 ofproto_rule_delete__(struct ofproto *ofproto, struct rule *rule,
1209 OVS_REQUIRES(ofproto_mutex)
1211 struct ofopgroup *group;
1213 ovs_assert(!rule->pending);
1215 group = ofopgroup_create_unattached(ofproto);
1216 delete_flow__(rule, group, reason);
1217 ofopgroup_submit(group);
1220 /* Deletes 'rule' from 'cls' within 'ofproto'.
1222 * Within an ofproto implementation, this function allows an ofproto
1223 * implementation to destroy any rules that remain when its ->destruct()
1224 * function is called. This function is not suitable for use elsewhere in an
1225 * ofproto implementation.
1227 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1228 * Cycle" in ofproto-provider.h. */
1230 ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
1231 OVS_EXCLUDED(ofproto_mutex)
1233 struct ofopgroup *group;
1235 ovs_mutex_lock(&ofproto_mutex);
1236 ovs_assert(!rule->pending);
1238 group = ofopgroup_create_unattached(ofproto);
1239 ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE);
1240 oftable_remove_rule__(ofproto, rule);
1241 ofproto->ofproto_class->rule_delete(rule);
1242 ofopgroup_submit(group);
1244 ovs_mutex_unlock(&ofproto_mutex);
1248 ofproto_flush__(struct ofproto *ofproto)
1249 OVS_EXCLUDED(ofproto_mutex)
1251 struct oftable *table;
1253 if (ofproto->ofproto_class->flush) {
1254 ofproto->ofproto_class->flush(ofproto);
1257 ovs_mutex_lock(&ofproto_mutex);
1258 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1259 struct rule *rule, *next_rule;
1260 struct cls_cursor cursor;
1262 if (table->flags & OFTABLE_HIDDEN) {
1266 ovs_rwlock_rdlock(&table->cls.rwlock);
1267 cls_cursor_init(&cursor, &table->cls, NULL);
1268 ovs_rwlock_unlock(&table->cls.rwlock);
1269 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
1270 if (!rule->pending) {
1271 ofproto_rule_delete__(ofproto, rule, OFPRR_DELETE);
1275 ovs_mutex_unlock(&ofproto_mutex);
1278 static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1281 ofproto_destroy__(struct ofproto *ofproto)
1282 OVS_EXCLUDED(ofproto_mutex)
1284 struct oftable *table;
1286 ovs_assert(list_is_empty(&ofproto->pending));
1288 destroy_rule_executes(ofproto);
1289 guarded_list_destroy(&ofproto->rule_executes);
1291 delete_group(ofproto, OFPG_ALL);
1292 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1293 hmap_destroy(&ofproto->groups);
1295 connmgr_destroy(ofproto->connmgr);
1297 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1298 free(ofproto->name);
1299 free(ofproto->type);
1300 free(ofproto->mfr_desc);
1301 free(ofproto->hw_desc);
1302 free(ofproto->sw_desc);
1303 free(ofproto->serial_desc);
1304 free(ofproto->dp_desc);
1305 hmap_destroy(&ofproto->ports);
1306 hmap_destroy(&ofproto->ofport_usage);
1307 shash_destroy(&ofproto->port_by_name);
1308 simap_destroy(&ofproto->ofp_requests);
1310 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1311 oftable_destroy(table);
1313 free(ofproto->tables);
1315 hmap_destroy(&ofproto->deletions);
1317 free(ofproto->vlan_bitmap);
1319 ofproto->ofproto_class->dealloc(ofproto);
1323 ofproto_destroy(struct ofproto *p)
1324 OVS_EXCLUDED(ofproto_mutex)
1326 struct ofport *ofport, *next_ofport;
1327 struct ofport_usage *usage, *next_usage;
1334 meter_delete(p, 1, p->meter_features.max_meters);
1335 p->meter_features.max_meters = 0;
1341 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
1342 ofport_destroy(ofport);
1345 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1346 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1350 p->ofproto_class->destruct(p);
1351 ofproto_destroy__(p);
1354 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1355 * kernel datapath, for example, this destroys the datapath in the kernel, and
1356 * with the netdev-based datapath, it tears down the data structures that
1357 * represent the datapath.
1359 * The datapath should not be currently open as an ofproto. */
1361 ofproto_delete(const char *name, const char *type)
1363 const struct ofproto_class *class = ofproto_class_find__(type);
1364 return (!class ? EAFNOSUPPORT
1365 : !class->del ? EACCES
1366 : class->del(type, name));
1370 process_port_change(struct ofproto *ofproto, int error, char *devname)
1372 if (error == ENOBUFS) {
1373 reinit_ports(ofproto);
1374 } else if (!error) {
1375 update_port(ofproto, devname);
1381 ofproto_type_run(const char *datapath_type)
1383 const struct ofproto_class *class;
1386 datapath_type = ofproto_normalize_type(datapath_type);
1387 class = ofproto_class_find__(datapath_type);
1389 error = class->type_run ? class->type_run(datapath_type) : 0;
1390 if (error && error != EAGAIN) {
1391 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
1392 datapath_type, ovs_strerror(error));
1398 ofproto_type_wait(const char *datapath_type)
1400 const struct ofproto_class *class;
1402 datapath_type = ofproto_normalize_type(datapath_type);
1403 class = ofproto_class_find__(datapath_type);
1405 if (class->type_wait) {
1406 class->type_wait(datapath_type);
1411 any_pending_ops(const struct ofproto *p)
1412 OVS_EXCLUDED(ofproto_mutex)
1416 ovs_mutex_lock(&ofproto_mutex);
1417 b = !list_is_empty(&p->pending);
1418 ovs_mutex_unlock(&ofproto_mutex);
1424 ofproto_run(struct ofproto *p)
1429 error = p->ofproto_class->run(p);
1430 if (error && error != EAGAIN) {
1431 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
1434 run_rule_executes(p);
1436 /* Restore the eviction group heap invariant occasionally. */
1437 if (p->eviction_group_timer < time_msec()) {
1440 p->eviction_group_timer = time_msec() + 1000;
1442 for (i = 0; i < p->n_tables; i++) {
1443 struct oftable *table = &p->tables[i];
1444 struct eviction_group *evg;
1445 struct cls_cursor cursor;
1448 if (!table->eviction_fields) {
1452 ovs_mutex_lock(&ofproto_mutex);
1453 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1454 heap_rebuild(&evg->rules);
1457 ovs_rwlock_rdlock(&table->cls.rwlock);
1458 cls_cursor_init(&cursor, &table->cls, NULL);
1459 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
1460 if (!rule->eviction_group
1461 && (rule->idle_timeout || rule->hard_timeout)) {
1462 eviction_group_add_rule(rule);
1465 ovs_rwlock_unlock(&table->cls.rwlock);
1466 ovs_mutex_unlock(&ofproto_mutex);
1470 if (p->ofproto_class->port_poll) {
1473 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1474 process_port_change(p, error, devname);
1478 new_seq = seq_read(connectivity_seq_get());
1479 if (new_seq != p->change_seq) {
1480 struct sset devnames;
1481 const char *devname;
1482 struct ofport *ofport;
1484 /* Update OpenFlow port status for any port whose netdev has changed.
1486 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1487 * destroyed, so it's not safe to update ports directly from the
1488 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1489 * need this two-phase approach. */
1490 sset_init(&devnames);
1491 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1492 sset_add(&devnames, netdev_get_name(ofport->netdev));
1494 SSET_FOR_EACH (devname, &devnames) {
1495 update_port(p, devname);
1497 sset_destroy(&devnames);
1499 p->change_seq = new_seq;
1504 connmgr_run(p->connmgr, handle_openflow);
1508 connmgr_run(p->connmgr, NULL);
1510 if (!any_pending_ops(p)) {
1511 p->state = S_OPENFLOW;
1516 connmgr_run(p->connmgr, NULL);
1518 if (!any_pending_ops(p)) {
1519 connmgr_flushed(p->connmgr);
1520 p->state = S_OPENFLOW;
1528 if (time_msec() >= p->next_op_report) {
1529 long long int ago = (time_msec() - p->first_op) / 1000;
1530 long long int interval = (p->last_op - p->first_op) / 1000;
1534 ds_put_format(&s, "%d flow_mods ",
1535 p->n_add + p->n_delete + p->n_modify);
1536 if (interval == ago) {
1537 ds_put_format(&s, "in the last %lld s", ago);
1538 } else if (interval) {
1539 ds_put_format(&s, "in the %lld s starting %lld s ago",
1542 ds_put_format(&s, "%lld s ago", ago);
1545 ds_put_cstr(&s, " (");
1547 ds_put_format(&s, "%d adds, ", p->n_add);
1550 ds_put_format(&s, "%d deletes, ", p->n_delete);
1553 ds_put_format(&s, "%d modifications, ", p->n_modify);
1556 ds_put_char(&s, ')');
1558 VLOG_INFO("%s: %s", p->name, ds_cstr(&s));
1561 p->n_add = p->n_delete = p->n_modify = 0;
1562 p->next_op_report = LLONG_MAX;
1569 ofproto_wait(struct ofproto *p)
1571 p->ofproto_class->wait(p);
1572 if (p->ofproto_class->port_poll_wait) {
1573 p->ofproto_class->port_poll_wait(p);
1575 seq_wait(connectivity_seq_get(), p->change_seq);
1579 connmgr_wait(p->connmgr, true);
1584 connmgr_wait(p->connmgr, false);
1585 if (!any_pending_ops(p)) {
1586 poll_immediate_wake();
1593 ofproto_is_alive(const struct ofproto *p)
1595 return connmgr_has_controllers(p->connmgr);
1598 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1599 * memory_report(). */
1601 ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1603 const struct oftable *table;
1604 unsigned int n_rules;
1606 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
1608 ovs_mutex_lock(&ofproto_mutex);
1609 simap_increase(usage, "ops",
1610 ofproto->n_pending + hmap_count(&ofproto->deletions));
1611 ovs_mutex_unlock(&ofproto_mutex);
1614 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1615 ovs_rwlock_rdlock(&table->cls.rwlock);
1616 n_rules += classifier_count(&table->cls);
1617 ovs_rwlock_unlock(&table->cls.rwlock);
1619 simap_increase(usage, "rules", n_rules);
1621 if (ofproto->ofproto_class->get_memory_usage) {
1622 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1625 connmgr_get_memory_usage(ofproto->connmgr, usage);
1629 ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1631 const struct ofproto_class *class;
1633 datapath_type = ofproto_normalize_type(datapath_type);
1634 class = ofproto_class_find__(datapath_type);
1636 if (class && class->type_get_memory_usage) {
1637 class->type_get_memory_usage(datapath_type, usage);
1642 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
1645 connmgr_get_controller_info(ofproto->connmgr, info);
1649 ofproto_free_ofproto_controller_info(struct shash *info)
1651 connmgr_free_controller_info(info);
1654 /* Makes a deep copy of 'old' into 'port'. */
1656 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1658 port->name = xstrdup(old->name);
1659 port->type = xstrdup(old->type);
1660 port->ofp_port = old->ofp_port;
1663 /* Frees memory allocated to members of 'ofproto_port'.
1665 * Do not call this function on an ofproto_port obtained from
1666 * ofproto_port_dump_next(): that function retains ownership of the data in the
1669 ofproto_port_destroy(struct ofproto_port *ofproto_port)
1671 free(ofproto_port->name);
1672 free(ofproto_port->type);
1675 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1677 * This function provides no status indication. An error status for the entire
1678 * dump operation is provided when it is completed by calling
1679 * ofproto_port_dump_done().
1682 ofproto_port_dump_start(struct ofproto_port_dump *dump,
1683 const struct ofproto *ofproto)
1685 dump->ofproto = ofproto;
1686 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1690 /* Attempts to retrieve another port from 'dump', which must have been created
1691 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1692 * 'port' and returns true. On failure, returns false.
1694 * Failure might indicate an actual error or merely that the last port has been
1695 * dumped. An error status for the entire dump operation is provided when it
1696 * is completed by calling ofproto_port_dump_done().
1698 * The ofproto owns the data stored in 'port'. It will remain valid until at
1699 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1700 * ofproto_port_dump_done(). */
1702 ofproto_port_dump_next(struct ofproto_port_dump *dump,
1703 struct ofproto_port *port)
1705 const struct ofproto *ofproto = dump->ofproto;
1711 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1714 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1720 /* Completes port table dump operation 'dump', which must have been created
1721 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1722 * error-free, otherwise a positive errno value describing the problem. */
1724 ofproto_port_dump_done(struct ofproto_port_dump *dump)
1726 const struct ofproto *ofproto = dump->ofproto;
1728 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1731 return dump->error == EOF ? 0 : dump->error;
1734 /* Returns the type to pass to netdev_open() when a datapath of type
1735 * 'datapath_type' has a port of type 'port_type', for a few special
1736 * cases when a netdev type differs from a port type. For example, when
1737 * using the userspace datapath, a port of type "internal" needs to be
1740 * Returns either 'type' itself or a string literal, which must not be
1743 ofproto_port_open_type(const char *datapath_type, const char *port_type)
1745 const struct ofproto_class *class;
1747 datapath_type = ofproto_normalize_type(datapath_type);
1748 class = ofproto_class_find__(datapath_type);
1753 return (class->port_open_type
1754 ? class->port_open_type(datapath_type, port_type)
1758 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1759 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1760 * the port's OpenFlow port number.
1762 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1763 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1764 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1765 * 'ofp_portp' is non-null). */
1767 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
1768 ofp_port_t *ofp_portp)
1770 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
1773 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1775 const char *netdev_name = netdev_get_name(netdev);
1777 simap_put(&ofproto->ofp_requests, netdev_name,
1778 ofp_to_u16(ofp_port));
1779 update_port(ofproto, netdev_name);
1782 *ofp_portp = OFPP_NONE;
1784 struct ofproto_port ofproto_port;
1786 error = ofproto_port_query_by_name(ofproto,
1787 netdev_get_name(netdev),
1790 *ofp_portp = ofproto_port.ofp_port;
1791 ofproto_port_destroy(&ofproto_port);
1798 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1799 * initializes '*port' appropriately; on failure, returns a positive errno
1802 * The caller owns the data in 'ofproto_port' and must free it with
1803 * ofproto_port_destroy() when it is no longer needed. */
1805 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1806 struct ofproto_port *port)
1810 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1812 memset(port, 0, sizeof *port);
1817 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1818 * Returns 0 if successful, otherwise a positive errno. */
1820 ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
1822 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1823 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
1824 struct simap_node *ofp_request_node;
1827 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
1828 if (ofp_request_node) {
1829 simap_delete(&ofproto->ofp_requests, ofp_request_node);
1832 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
1833 if (!error && ofport) {
1834 /* 'name' is the netdev's name and update_port() is going to close the
1835 * netdev. Just in case update_port() refers to 'name' after it
1836 * destroys 'ofport', make a copy of it around the update_port()
1838 char *devname = xstrdup(name);
1839 update_port(ofproto, devname);
1846 flow_mod_init(struct ofputil_flow_mod *fm,
1847 const struct match *match, unsigned int priority,
1848 const struct ofpact *ofpacts, size_t ofpacts_len,
1849 enum ofp_flow_mod_command command)
1851 memset(fm, 0, sizeof *fm);
1853 fm->priority = priority;
1856 fm->modify_cookie = false;
1858 fm->command = command;
1859 fm->idle_timeout = 0;
1860 fm->hard_timeout = 0;
1861 fm->buffer_id = UINT32_MAX;
1862 fm->out_port = OFPP_ANY;
1863 fm->out_group = OFPG_ANY;
1865 fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts);
1866 fm->ofpacts_len = ofpacts_len;
1870 simple_flow_mod(struct ofproto *ofproto,
1871 const struct match *match, unsigned int priority,
1872 const struct ofpact *ofpacts, size_t ofpacts_len,
1873 enum ofp_flow_mod_command command)
1875 struct ofputil_flow_mod fm;
1877 flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command);
1879 return handle_flow_mod__(ofproto, NULL, &fm, NULL);
1882 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1883 * performs the 'n_actions' actions in 'actions'. The new flow will not
1886 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1887 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1888 * controllers; otherwise, it will be hidden.
1890 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1892 * This is a helper function for in-band control and fail-open. */
1894 ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
1895 unsigned int priority,
1896 const struct ofpact *ofpacts, size_t ofpacts_len)
1897 OVS_EXCLUDED(ofproto_mutex)
1899 const struct rule *rule;
1902 /* First do a cheap check whether the rule we're looking for already exists
1903 * with the actions that we want. If it does, then we're done. */
1904 ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock);
1905 rule = rule_from_cls_rule(classifier_find_match_exactly(
1906 &ofproto->tables[0].cls, match, priority));
1908 ovs_mutex_lock(&rule->mutex);
1909 must_add = !ofpacts_equal(rule->actions->ofpacts,
1910 rule->actions->ofpacts_len,
1911 ofpacts, ofpacts_len);
1912 ovs_mutex_unlock(&rule->mutex);
1916 ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock);
1918 /* If there's no such rule or the rule doesn't have the actions we want,
1919 * fall back to a executing a full flow mod. We can't optimize this at
1920 * all because we didn't take enough locks above to ensure that the flow
1921 * table didn't already change beneath us. */
1923 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
1924 OFPFC_MODIFY_STRICT);
1928 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1929 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1930 * operation cannot be initiated now but may be retried later.
1932 * This is a helper function for in-band control and fail-open and the "learn"
1935 ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
1936 OVS_EXCLUDED(ofproto_mutex)
1938 return handle_flow_mod__(ofproto, NULL, fm, NULL);
1941 /* Searches for a rule with matching criteria exactly equal to 'target' in
1942 * ofproto's table 0 and, if it finds one, deletes it.
1944 * This is a helper function for in-band control and fail-open. */
1946 ofproto_delete_flow(struct ofproto *ofproto,
1947 const struct match *target, unsigned int priority)
1948 OVS_EXCLUDED(ofproto_mutex)
1950 struct classifier *cls = &ofproto->tables[0].cls;
1953 /* First do a cheap check whether the rule we're looking for has already
1954 * been deleted. If so, then we're done. */
1955 ovs_rwlock_rdlock(&cls->rwlock);
1956 rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
1958 ovs_rwlock_unlock(&cls->rwlock);
1963 /* Fall back to a executing a full flow mod. We can't optimize this at all
1964 * because we didn't take enough locks above to ensure that the flow table
1965 * didn't already change beneath us. */
1966 return simple_flow_mod(ofproto, target, priority, NULL, 0,
1967 OFPFC_DELETE_STRICT) != OFPROTO_POSTPONE;
1970 /* Starts the process of deleting all of the flows from all of ofproto's flow
1971 * tables and then reintroducing the flows required by in-band control and
1972 * fail-open. The process will complete in a later call to ofproto_run(). */
1974 ofproto_flush_flows(struct ofproto *ofproto)
1976 COVERAGE_INC(ofproto_flush);
1977 ofproto->state = S_FLUSH;
1981 reinit_ports(struct ofproto *p)
1983 struct ofproto_port_dump dump;
1984 struct sset devnames;
1985 struct ofport *ofport;
1986 struct ofproto_port ofproto_port;
1987 const char *devname;
1989 COVERAGE_INC(ofproto_reinit_ports);
1991 sset_init(&devnames);
1992 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1993 sset_add(&devnames, netdev_get_name(ofport->netdev));
1995 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
1996 sset_add(&devnames, ofproto_port.name);
1999 SSET_FOR_EACH (devname, &devnames) {
2000 update_port(p, devname);
2002 sset_destroy(&devnames);
2006 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2010 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2011 port_idx = port_idx ? port_idx : UINT16_MAX;
2013 if (port_idx >= ofproto->max_ports
2014 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2015 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2016 long long int last_used_at, lru = LLONG_MAX;
2018 /* Search for a free OpenFlow port number. We try not to
2019 * immediately reuse them to prevent problems due to old
2022 * We limit the automatically assigned port numbers to the lower half
2023 * of the port range, to reserve the upper half for assignment by
2026 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2027 ofproto->alloc_port_no = 1;
2029 last_used_at = ofport_get_usage(ofproto,
2030 u16_to_ofp(ofproto->alloc_port_no));
2031 if (!last_used_at) {
2032 port_idx = ofproto->alloc_port_no;
2034 } else if ( last_used_at < time_msec() - 60*60*1000) {
2035 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2036 * more than an hour ago, consider it usable. */
2037 ofport_remove_usage(ofproto,
2038 u16_to_ofp(ofproto->alloc_port_no));
2039 port_idx = ofproto->alloc_port_no;
2041 } else if (last_used_at < lru) {
2043 lru_ofport = ofproto->alloc_port_no;
2046 if (ofproto->alloc_port_no == end_port_no) {
2048 port_idx = lru_ofport;
2055 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2056 return u16_to_ofp(port_idx);
2060 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2062 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2063 ofport_set_usage(ofproto, ofp_port, time_msec());
2067 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2068 * pointer if the netdev cannot be opened. On success, also fills in
2070 static struct netdev *
2071 ofport_open(struct ofproto *ofproto,
2072 struct ofproto_port *ofproto_port,
2073 struct ofputil_phy_port *pp)
2075 enum netdev_flags flags;
2076 struct netdev *netdev;
2079 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2081 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2082 "cannot be opened (%s)",
2084 ofproto_port->name, ofproto_port->ofp_port,
2085 ofproto_port->name, ovs_strerror(error));
2089 if (ofproto_port->ofp_port == OFPP_NONE) {
2090 if (!strcmp(ofproto->name, ofproto_port->name)) {
2091 ofproto_port->ofp_port = OFPP_LOCAL;
2093 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2094 ofproto_port->name);
2097 pp->port_no = ofproto_port->ofp_port;
2098 netdev_get_etheraddr(netdev, pp->hw_addr);
2099 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2100 netdev_get_flags(netdev, &flags);
2101 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2102 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2103 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2104 &pp->supported, &pp->peer);
2105 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2106 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2111 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2112 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
2115 ofport_equal(const struct ofputil_phy_port *a,
2116 const struct ofputil_phy_port *b)
2118 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2119 && a->state == b->state
2120 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2121 && a->curr == b->curr
2122 && a->advertised == b->advertised
2123 && a->supported == b->supported
2124 && a->peer == b->peer
2125 && a->curr_speed == b->curr_speed
2126 && a->max_speed == b->max_speed);
2129 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2130 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2131 * one with the same name or port number). */
2133 ofport_install(struct ofproto *p,
2134 struct netdev *netdev, const struct ofputil_phy_port *pp)
2136 const char *netdev_name = netdev_get_name(netdev);
2137 struct ofport *ofport;
2140 /* Create ofport. */
2141 ofport = p->ofproto_class->port_alloc();
2146 ofport->ofproto = p;
2147 ofport->netdev = netdev;
2149 ofport->ofp_port = pp->port_no;
2150 ofport->created = time_msec();
2152 /* Add port to 'p'. */
2153 hmap_insert(&p->ports, &ofport->hmap_node,
2154 hash_ofp_port(ofport->ofp_port));
2155 shash_add(&p->port_by_name, netdev_name, ofport);
2157 update_mtu(p, ofport);
2159 /* Let the ofproto_class initialize its private data. */
2160 error = p->ofproto_class->port_construct(ofport);
2164 connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD);
2168 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2169 p->name, netdev_name, ovs_strerror(error));
2171 ofport_destroy__(ofport);
2173 netdev_close(netdev);
2177 /* Removes 'ofport' from 'p' and destroys it. */
2179 ofport_remove(struct ofport *ofport)
2181 connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp,
2183 ofport_destroy(ofport);
2186 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2189 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2191 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2193 ofport_remove(port);
2197 /* Updates 'port' with new 'pp' description.
2199 * Does not handle a name or port number change. The caller must implement
2200 * such a change as a delete followed by an add. */
2202 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2204 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2205 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2206 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2207 port->pp.state = pp->state;
2208 port->pp.curr = pp->curr;
2209 port->pp.advertised = pp->advertised;
2210 port->pp.supported = pp->supported;
2211 port->pp.peer = pp->peer;
2212 port->pp.curr_speed = pp->curr_speed;
2213 port->pp.max_speed = pp->max_speed;
2215 connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY);
2218 /* Update OpenFlow 'state' in 'port' and notify controller. */
2220 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2222 if (port->pp.state != state) {
2223 port->pp.state = state;
2224 connmgr_send_port_status(port->ofproto->connmgr, &port->pp,
2230 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2232 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2234 if (port->ofproto->ofproto_class->set_realdev) {
2235 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2237 if (port->ofproto->ofproto_class->set_stp_port) {
2238 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2240 if (port->ofproto->ofproto_class->set_cfm) {
2241 port->ofproto->ofproto_class->set_cfm(port, NULL);
2243 if (port->ofproto->ofproto_class->bundle_remove) {
2244 port->ofproto->ofproto_class->bundle_remove(port);
2250 ofport_destroy__(struct ofport *port)
2252 struct ofproto *ofproto = port->ofproto;
2253 const char *name = netdev_get_name(port->netdev);
2255 hmap_remove(&ofproto->ports, &port->hmap_node);
2256 shash_delete(&ofproto->port_by_name,
2257 shash_find(&ofproto->port_by_name, name));
2259 netdev_close(port->netdev);
2260 ofproto->ofproto_class->port_dealloc(port);
2264 ofport_destroy(struct ofport *port)
2267 dealloc_ofp_port(port->ofproto, port->ofp_port);
2268 port->ofproto->ofproto_class->port_destruct(port);
2269 ofport_destroy__(port);
2274 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2276 struct ofport *port;
2278 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2280 if (port->ofp_port == ofp_port) {
2287 static long long int
2288 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2290 struct ofport_usage *usage;
2292 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2293 &ofproto->ofport_usage) {
2294 if (usage->ofp_port == ofp_port) {
2295 return usage->last_used;
2302 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2303 long long int last_used)
2305 struct ofport_usage *usage;
2306 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2307 &ofproto->ofport_usage) {
2308 if (usage->ofp_port == ofp_port) {
2309 usage->last_used = last_used;
2313 ovs_assert(last_used == LLONG_MAX);
2315 usage = xmalloc(sizeof *usage);
2316 usage->ofp_port = ofp_port;
2317 usage->last_used = last_used;
2318 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2319 hash_ofp_port(ofp_port));
2323 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2325 struct ofport_usage *usage;
2326 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2327 &ofproto->ofport_usage) {
2328 if (usage->ofp_port == ofp_port) {
2329 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2337 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2339 struct ofproto *ofproto = port->ofproto;
2342 if (ofproto->ofproto_class->port_get_stats) {
2343 error = ofproto->ofproto_class->port_get_stats(port, stats);
2352 update_port(struct ofproto *ofproto, const char *name)
2354 struct ofproto_port ofproto_port;
2355 struct ofputil_phy_port pp;
2356 struct netdev *netdev;
2357 struct ofport *port;
2359 COVERAGE_INC(ofproto_update_port);
2361 /* Fetch 'name''s location and properties from the datapath. */
2362 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2363 ? ofport_open(ofproto, &ofproto_port, &pp)
2367 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2368 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2369 struct netdev *old_netdev = port->netdev;
2371 /* 'name' hasn't changed location. Any properties changed? */
2372 if (!ofport_equal(&port->pp, &pp)) {
2373 ofport_modified(port, &pp);
2376 update_mtu(ofproto, port);
2378 /* Install the newly opened netdev in case it has changed.
2379 * Don't close the old netdev yet in case port_modified has to
2380 * remove a retained reference to it.*/
2381 port->netdev = netdev;
2383 if (port->ofproto->ofproto_class->port_modified) {
2384 port->ofproto->ofproto_class->port_modified(port);
2387 netdev_close(old_netdev);
2389 /* If 'port' is nonnull then its name differs from 'name' and thus
2390 * we should delete it. If we think there's a port named 'name'
2391 * then its port number must be wrong now so delete it too. */
2393 ofport_remove(port);
2395 ofport_remove_with_name(ofproto, name);
2396 ofport_install(ofproto, netdev, &pp);
2399 /* Any port named 'name' is gone now. */
2400 ofport_remove_with_name(ofproto, name);
2402 ofproto_port_destroy(&ofproto_port);
2406 init_ports(struct ofproto *p)
2408 struct ofproto_port_dump dump;
2409 struct ofproto_port ofproto_port;
2410 struct shash_node *node, *next;
2412 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2413 const char *name = ofproto_port.name;
2415 if (shash_find(&p->port_by_name, name)) {
2416 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2419 struct ofputil_phy_port pp;
2420 struct netdev *netdev;
2422 /* Check if an OpenFlow port number had been requested. */
2423 node = shash_find(&init_ofp_ports, name);
2425 const struct iface_hint *iface_hint = node->data;
2426 simap_put(&p->ofp_requests, name,
2427 ofp_to_u16(iface_hint->ofp_port));
2430 netdev = ofport_open(p, &ofproto_port, &pp);
2432 ofport_install(p, netdev, &pp);
2433 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2434 p->alloc_port_no = MAX(p->alloc_port_no,
2435 ofp_to_u16(ofproto_port.ofp_port));
2441 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2442 struct iface_hint *iface_hint = node->data;
2444 if (!strcmp(iface_hint->br_name, p->name)) {
2445 free(iface_hint->br_name);
2446 free(iface_hint->br_type);
2448 shash_delete(&init_ofp_ports, node);
2455 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2456 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2458 find_min_mtu(struct ofproto *p)
2460 struct ofport *ofport;
2463 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2464 struct netdev *netdev = ofport->netdev;
2467 /* Skip any internal ports, since that's what we're trying to
2469 if (!strcmp(netdev_get_type(netdev), "internal")) {
2473 if (netdev_get_mtu(netdev, &dev_mtu)) {
2476 if (!mtu || dev_mtu < mtu) {
2481 return mtu ? mtu: ETH_PAYLOAD_MAX;
2484 /* Update MTU of all datapath devices on 'p' to the minimum of the
2485 * non-datapath ports in event of 'port' added or changed. */
2487 update_mtu(struct ofproto *p, struct ofport *port)
2489 struct ofport *ofport;
2490 struct netdev *netdev = port->netdev;
2491 int dev_mtu, old_min;
2493 if (netdev_get_mtu(netdev, &dev_mtu)) {
2497 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2498 if (dev_mtu > p->min_mtu) {
2499 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2500 dev_mtu = p->min_mtu;
2503 port->mtu = dev_mtu;
2507 /* For non-internal port find new min mtu. */
2508 old_min = p->min_mtu;
2509 port->mtu = dev_mtu;
2510 p->min_mtu = find_min_mtu(p);
2511 if (p->min_mtu == old_min) {
2515 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2516 struct netdev *netdev = ofport->netdev;
2518 if (!strcmp(netdev_get_type(netdev), "internal")) {
2519 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2520 ofport->mtu = p->min_mtu;
2527 ofproto_rule_ref(struct rule *rule)
2532 atomic_add(&rule->ref_count, 1, &orig);
2533 ovs_assert(orig != 0);
2538 ofproto_rule_unref(struct rule *rule)
2543 atomic_sub(&rule->ref_count, 1, &orig);
2545 rule->ofproto->ofproto_class->rule_destruct(rule);
2546 ofproto_rule_destroy__(rule);
2548 ovs_assert(orig != 0);
2553 struct rule_actions *
2554 rule_get_actions(const struct rule *rule)
2555 OVS_EXCLUDED(rule->mutex)
2557 struct rule_actions *actions;
2559 ovs_mutex_lock(&rule->mutex);
2560 actions = rule_get_actions__(rule);
2561 ovs_mutex_unlock(&rule->mutex);
2566 struct rule_actions *
2567 rule_get_actions__(const struct rule *rule)
2568 OVS_REQUIRES(rule->mutex)
2570 rule_actions_ref(rule->actions);
2571 return rule->actions;
2575 ofproto_rule_destroy__(struct rule *rule)
2576 OVS_NO_THREAD_SAFETY_ANALYSIS
2578 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2579 rule_actions_unref(rule->actions);
2580 ovs_mutex_destroy(&rule->mutex);
2581 rule->ofproto->ofproto_class->rule_dealloc(rule);
2584 static uint32_t get_provider_meter_id(const struct ofproto *,
2585 uint32_t of_meter_id);
2587 /* Creates and returns a new 'struct rule_actions', with a ref_count of 1,
2588 * whose actions are a copy of from the 'ofpacts_len' bytes of 'ofpacts'. */
2589 struct rule_actions *
2590 rule_actions_create(const struct ofproto *ofproto,
2591 const struct ofpact *ofpacts, size_t ofpacts_len)
2593 struct rule_actions *actions;
2595 actions = xmalloc(sizeof *actions);
2596 atomic_init(&actions->ref_count, 1);
2597 actions->ofpacts = xmemdup(ofpacts, ofpacts_len);
2598 actions->ofpacts_len = ofpacts_len;
2599 actions->provider_meter_id
2600 = get_provider_meter_id(ofproto,
2601 ofpacts_get_meter(ofpacts, ofpacts_len));
2606 /* Increments 'actions''s ref_count. */
2608 rule_actions_ref(struct rule_actions *actions)
2613 atomic_add(&actions->ref_count, 1, &orig);
2614 ovs_assert(orig != 0);
2618 /* Decrements 'actions''s ref_count and frees 'actions' if the ref_count
2621 rule_actions_unref(struct rule_actions *actions)
2626 atomic_sub(&actions->ref_count, 1, &orig);
2628 free(actions->ofpacts);
2631 ovs_assert(orig != 0);
2636 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2637 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2639 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2640 OVS_REQUIRES(ofproto_mutex)
2642 return (port == OFPP_ANY
2643 || ofpacts_output_to_port(rule->actions->ofpacts,
2644 rule->actions->ofpacts_len, port));
2647 /* Returns true if 'rule' has group and equals group_id. */
2649 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2650 OVS_REQUIRES(ofproto_mutex)
2652 return (group_id == OFPG11_ANY
2653 || ofpacts_output_to_group(rule->actions->ofpacts,
2654 rule->actions->ofpacts_len, group_id));
2657 /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
2658 * OFPAT_ENQUEUE action that outputs to 'out_port'. */
2660 ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port)
2661 OVS_REQUIRES(ofproto_mutex)
2663 if (ofproto_rule_has_out_port(op->rule, out_port)) {
2668 case OFOPERATION_ADD:
2669 case OFOPERATION_DELETE:
2672 case OFOPERATION_MODIFY:
2673 case OFOPERATION_REPLACE:
2674 return ofpacts_output_to_port(op->actions->ofpacts,
2675 op->actions->ofpacts_len, out_port);
2682 rule_execute_destroy(struct rule_execute *e)
2684 ofproto_rule_unref(e->rule);
2685 list_remove(&e->list_node);
2689 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2690 * by passing them to the ofproto provider. */
2692 run_rule_executes(struct ofproto *ofproto)
2693 OVS_EXCLUDED(ofproto_mutex)
2695 struct rule_execute *e, *next;
2696 struct list executes;
2698 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2699 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2700 union flow_in_port in_port_;
2703 in_port_.ofp_port = e->in_port;
2704 flow_extract(e->packet, 0, 0, NULL, &in_port_, &flow);
2705 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2707 rule_execute_destroy(e);
2711 /* Destroys and discards all "rule_execute" operations queued up in
2712 * ofproto->rule_executes. */
2714 destroy_rule_executes(struct ofproto *ofproto)
2716 struct rule_execute *e, *next;
2717 struct list executes;
2719 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2720 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2721 ofpbuf_delete(e->packet);
2722 rule_execute_destroy(e);
2726 /* Returns true if 'rule' should be hidden from the controller.
2728 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
2729 * (e.g. by in-band control) and are intentionally hidden from the
2732 ofproto_rule_is_hidden(const struct rule *rule)
2734 return rule->cr.priority > UINT16_MAX;
2737 static enum oftable_flags
2738 rule_get_flags(const struct rule *rule)
2740 return rule->ofproto->tables[rule->table_id].flags;
2744 rule_is_modifiable(const struct rule *rule)
2746 return !(rule_get_flags(rule) & OFTABLE_READONLY);
2750 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
2752 ofconn_send_reply(ofconn, make_echo_reply(oh));
2757 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
2759 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2760 struct ofputil_switch_features features;
2761 struct ofport *port;
2767 ofproto->ofproto_class->get_features(ofproto, &arp_match_ip,
2769 ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */
2771 /* Count only non-hidden tables in the number of tables. (Hidden tables,
2772 * if present, are always at the end.) */
2773 n_tables = ofproto->n_tables;
2774 for (i = 0; i < ofproto->n_tables; i++) {
2775 if (ofproto->tables[i].flags & OFTABLE_HIDDEN) {
2781 features.datapath_id = ofproto->datapath_id;
2782 features.n_buffers = pktbuf_capacity();
2783 features.n_tables = n_tables;
2784 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
2785 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS);
2787 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
2789 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
2790 features.auxiliary_id = 0;
2791 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
2793 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
2794 ofputil_put_switch_features_port(&port->pp, b);
2797 ofconn_send_reply(ofconn, b);
2802 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
2804 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2805 struct ofp_switch_config *osc;
2806 enum ofp_config_flags flags;
2810 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
2811 osc = ofpbuf_put_uninit(buf, sizeof *osc);
2812 flags = ofproto->frag_handling;
2813 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2814 if (oh->version < OFP13_VERSION
2815 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
2816 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
2818 osc->flags = htons(flags);
2819 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
2820 ofconn_send_reply(ofconn, buf);
2826 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
2828 const struct ofp_switch_config *osc = ofpmsg_body(oh);
2829 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2830 uint16_t flags = ntohs(osc->flags);
2832 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
2833 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
2834 enum ofp_config_flags cur = ofproto->frag_handling;
2835 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
2837 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
2839 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
2840 ofproto->frag_handling = next;
2842 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
2844 ofputil_frag_handling_to_string(next));
2848 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2849 ofconn_set_invalid_ttl_to_controller(ofconn,
2850 (oh->version < OFP13_VERSION
2851 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
2853 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
2858 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2859 * error message code for the caller to propagate upward. Otherwise, returns
2862 * The log message mentions 'msg_type'. */
2864 reject_slave_controller(struct ofconn *ofconn)
2866 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
2867 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
2868 return OFPERR_OFPBRC_EPERM;
2874 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
2877 * - If they use a meter, then 'ofproto' has that meter configured.
2879 * - If they use any groups, then 'ofproto' has that group configured.
2881 * Returns 0 if successful, otherwise an OpenFlow error. */
2883 ofproto_check_ofpacts(struct ofproto *ofproto,
2884 const struct ofpact ofpacts[], size_t ofpacts_len)
2886 const struct ofpact *a;
2889 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
2890 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
2891 return OFPERR_OFPMMFC_INVALID_METER;
2894 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2895 if (a->type == OFPACT_GROUP
2896 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
2897 return OFPERR_OFPBAC_BAD_OUT_GROUP;
2905 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
2907 struct ofproto *p = ofconn_get_ofproto(ofconn);
2908 struct ofputil_packet_out po;
2909 struct ofpbuf *payload;
2910 uint64_t ofpacts_stub[1024 / 8];
2911 struct ofpbuf ofpacts;
2913 union flow_in_port in_port_;
2916 COVERAGE_INC(ofproto_packet_out);
2918 error = reject_slave_controller(ofconn);
2923 /* Decode message. */
2924 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
2925 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
2927 goto exit_free_ofpacts;
2929 if (ofp_to_u16(po.in_port) >= p->max_ports
2930 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
2931 error = OFPERR_OFPBRC_BAD_PORT;
2932 goto exit_free_ofpacts;
2936 if (po.buffer_id != UINT32_MAX) {
2937 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
2938 if (error || !payload) {
2939 goto exit_free_ofpacts;
2942 /* Ensure that the L3 header is 32-bit aligned. */
2943 payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2);
2946 /* Verify actions against packet, then send packet if successful. */
2947 in_port_.ofp_port = po.in_port;
2948 flow_extract(payload, 0, 0, NULL, &in_port_, &flow);
2949 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
2951 error = p->ofproto_class->packet_out(p, payload, &flow,
2952 po.ofpacts, po.ofpacts_len);
2954 ofpbuf_delete(payload);
2957 ofpbuf_uninit(&ofpacts);
2963 update_port_config(struct ofport *port,
2964 enum ofputil_port_config config,
2965 enum ofputil_port_config mask)
2967 enum ofputil_port_config old_config = port->pp.config;
2968 enum ofputil_port_config toggle;
2970 toggle = (config ^ port->pp.config) & mask;
2971 if (toggle & OFPUTIL_PC_PORT_DOWN) {
2972 if (config & OFPUTIL_PC_PORT_DOWN) {
2973 netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL);
2975 netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL);
2977 toggle &= ~OFPUTIL_PC_PORT_DOWN;
2980 port->pp.config ^= toggle;
2981 if (port->pp.config != old_config) {
2982 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
2987 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
2989 struct ofproto *p = ofconn_get_ofproto(ofconn);
2990 struct ofputil_port_mod pm;
2991 struct ofport *port;
2994 error = reject_slave_controller(ofconn);
2999 error = ofputil_decode_port_mod(oh, &pm);
3004 port = ofproto_get_port(p, pm.port_no);
3006 return OFPERR_OFPPMFC_BAD_PORT;
3007 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
3008 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3010 update_port_config(port, pm.config, pm.mask);
3012 netdev_set_advertisements(port->netdev, pm.advertise);
3019 handle_desc_stats_request(struct ofconn *ofconn,
3020 const struct ofp_header *request)
3022 static const char *default_mfr_desc = "Nicira, Inc.";
3023 static const char *default_hw_desc = "Open vSwitch";
3024 static const char *default_sw_desc = VERSION;
3025 static const char *default_serial_desc = "None";
3026 static const char *default_dp_desc = "None";
3028 struct ofproto *p = ofconn_get_ofproto(ofconn);
3029 struct ofp_desc_stats *ods;
3032 msg = ofpraw_alloc_stats_reply(request, 0);
3033 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3034 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3035 sizeof ods->mfr_desc);
3036 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3037 sizeof ods->hw_desc);
3038 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3039 sizeof ods->sw_desc);
3040 ovs_strlcpy(ods->serial_num,
3041 p->serial_desc ? p->serial_desc : default_serial_desc,
3042 sizeof ods->serial_num);
3043 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3044 sizeof ods->dp_desc);
3045 ofconn_send_reply(ofconn, msg);
3051 handle_table_stats_request(struct ofconn *ofconn,
3052 const struct ofp_header *request)
3054 struct ofproto *p = ofconn_get_ofproto(ofconn);
3055 struct ofp12_table_stats *ots;
3060 /* Set up default values.
3062 * ofp12_table_stats is used as a generic structure as
3063 * it is able to hold all the fields for ofp10_table_stats
3064 * and ofp11_table_stats (and of course itself).
3066 ots = xcalloc(p->n_tables, sizeof *ots);
3067 for (i = 0; i < p->n_tables; i++) {
3068 ots[i].table_id = i;
3069 sprintf(ots[i].name, "table%"PRIuSIZE, i);
3070 ots[i].match = htonll(OFPXMT13_MASK);
3071 ots[i].wildcards = htonll(OFPXMT13_MASK);
3072 ots[i].write_actions = htonl(OFPAT11_OUTPUT);
3073 ots[i].apply_actions = htonl(OFPAT11_OUTPUT);
3074 ots[i].write_setfields = htonll(OFPXMT13_MASK);
3075 ots[i].apply_setfields = htonll(OFPXMT13_MASK);
3076 ots[i].metadata_match = OVS_BE64_MAX;
3077 ots[i].metadata_write = OVS_BE64_MAX;
3078 ots[i].instructions = htonl(OFPIT11_ALL);
3079 ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK);
3080 ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */
3081 ovs_rwlock_rdlock(&p->tables[i].cls.rwlock);
3082 ots[i].active_count = htonl(classifier_count(&p->tables[i].cls));
3083 ovs_rwlock_unlock(&p->tables[i].cls.rwlock);
3086 p->ofproto_class->get_tables(p, ots);
3088 /* Post-process the tables, dropping hidden tables. */
3089 n_tables = p->n_tables;
3090 for (i = 0; i < p->n_tables; i++) {
3091 const struct oftable *table = &p->tables[i];
3093 if (table->flags & OFTABLE_HIDDEN) {
3099 ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name);
3102 if (table->max_flows < ntohl(ots[i].max_entries)) {
3103 ots[i].max_entries = htonl(table->max_flows);
3107 msg = ofputil_encode_table_stats_reply(ots, n_tables, request);
3108 ofconn_send_reply(ofconn, msg);
3116 append_port_stat(struct ofport *port, struct list *replies)
3118 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3120 calc_duration(port->created, time_msec(),
3121 &ops.duration_sec, &ops.duration_nsec);
3123 /* Intentionally ignore return value, since errors will set
3124 * 'stats' to all-1s, which is correct for OpenFlow, and
3125 * netdev_get_stats() will log errors. */
3126 ofproto_port_get_stats(port, &ops.stats);
3128 ofputil_append_port_stat(replies, &ops);
3132 handle_port_stats_request(struct ofconn *ofconn,
3133 const struct ofp_header *request)
3135 struct ofproto *p = ofconn_get_ofproto(ofconn);
3136 struct ofport *port;
3137 struct list replies;
3141 error = ofputil_decode_port_stats_request(request, &port_no);
3146 ofpmp_init(&replies, request);
3147 if (port_no != OFPP_ANY) {
3148 port = ofproto_get_port(p, port_no);
3150 append_port_stat(port, &replies);
3153 HMAP_FOR_EACH (port, hmap_node, &p->ports) {
3154 append_port_stat(port, &replies);
3158 ofconn_send_replies(ofconn, &replies);
3163 handle_port_desc_stats_request(struct ofconn *ofconn,
3164 const struct ofp_header *request)
3166 struct ofproto *p = ofconn_get_ofproto(ofconn);
3167 enum ofp_version version;
3168 struct ofport *port;
3169 struct list replies;
3171 ofpmp_init(&replies, request);
3173 version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn));
3174 HMAP_FOR_EACH (port, hmap_node, &p->ports) {
3175 ofputil_append_port_desc_stats_reply(version, &port->pp, &replies);
3178 ofconn_send_replies(ofconn, &replies);
3183 hash_cookie(ovs_be64 cookie)
3185 return hash_2words((OVS_FORCE uint64_t)cookie >> 32,
3186 (OVS_FORCE uint64_t)cookie);
3190 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3191 OVS_REQUIRES(ofproto_mutex)
3193 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3194 hash_cookie(rule->flow_cookie));
3198 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3199 OVS_REQUIRES(ofproto_mutex)
3201 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3205 ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule,
3206 ovs_be64 new_cookie)
3207 OVS_REQUIRES(ofproto_mutex)
3209 if (new_cookie != rule->flow_cookie) {
3210 cookies_remove(ofproto, rule);
3212 ovs_mutex_lock(&rule->mutex);
3213 rule->flow_cookie = new_cookie;
3214 ovs_mutex_unlock(&rule->mutex);
3216 cookies_insert(ofproto, rule);
3221 calc_duration(long long int start, long long int now,
3222 uint32_t *sec, uint32_t *nsec)
3224 long long int msecs = now - start;
3225 *sec = msecs / 1000;
3226 *nsec = (msecs % 1000) * (1000 * 1000);
3229 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3230 * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */
3232 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3234 return (table_id == 0xff || table_id < ofproto->n_tables
3236 : OFPERR_OFPBRC_BAD_TABLE_ID);
3240 static struct oftable *
3241 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3243 struct oftable *table;
3245 for (table = &ofproto->tables[table_id];
3246 table < &ofproto->tables[ofproto->n_tables];
3248 if (!(table->flags & OFTABLE_HIDDEN)) {
3256 static struct oftable *
3257 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3259 if (table_id == 0xff) {
3260 return next_visible_table(ofproto, 0);
3261 } else if (table_id < ofproto->n_tables) {
3262 return &ofproto->tables[table_id];
3268 static struct oftable *
3269 next_matching_table(const struct ofproto *ofproto,
3270 const struct oftable *table, uint8_t table_id)
3272 return (table_id == 0xff
3273 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3277 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3279 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3280 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3282 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3283 * only once, for that table. (This can be used to access tables marked
3286 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3287 * entered at all. (Perhaps you should have validated TABLE_ID with
3288 * check_table_id().)
3290 * All parameters are evaluated multiple times.
3292 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3293 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3295 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3297 /* Initializes 'criteria' in a straightforward way based on the other
3300 * For "loose" matching, the 'priority' parameter is unimportant and may be
3303 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3304 const struct match *match, unsigned int priority,
3305 ovs_be64 cookie, ovs_be64 cookie_mask,
3306 ofp_port_t out_port, uint32_t out_group)
3308 criteria->table_id = table_id;
3309 cls_rule_init(&criteria->cr, match, priority);
3310 criteria->cookie = cookie;
3311 criteria->cookie_mask = cookie_mask;
3312 criteria->out_port = out_port;
3313 criteria->out_group = out_group;
3317 rule_criteria_destroy(struct rule_criteria *criteria)
3319 cls_rule_destroy(&criteria->cr);
3323 rule_collection_init(struct rule_collection *rules)
3325 rules->rules = rules->stub;
3327 rules->capacity = ARRAY_SIZE(rules->stub);
3331 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3333 if (rules->n >= rules->capacity) {
3334 size_t old_size, new_size;
3336 old_size = rules->capacity * sizeof *rules->rules;
3337 rules->capacity *= 2;
3338 new_size = rules->capacity * sizeof *rules->rules;
3340 if (rules->rules == rules->stub) {
3341 rules->rules = xmalloc(new_size);
3342 memcpy(rules->rules, rules->stub, old_size);
3344 rules->rules = xrealloc(rules->rules, new_size);
3348 rules->rules[rules->n++] = rule;
3352 rule_collection_ref(struct rule_collection *rules)
3353 OVS_REQUIRES(ofproto_mutex)
3357 for (i = 0; i < rules->n; i++) {
3358 ofproto_rule_ref(rules->rules[i]);
3363 rule_collection_unref(struct rule_collection *rules)
3367 for (i = 0; i < rules->n; i++) {
3368 ofproto_rule_unref(rules->rules[i]);
3373 rule_collection_destroy(struct rule_collection *rules)
3375 if (rules->rules != rules->stub) {
3381 collect_rule(struct rule *rule, const struct rule_criteria *c,
3382 struct rule_collection *rules)
3383 OVS_REQUIRES(ofproto_mutex)
3385 /* We ordinarily want to skip hidden rules, but there has to be a way for
3386 * code internal to OVS to modify and delete them, so if the criteria
3387 * specify a priority that can only be for a hidden flow, then allow hidden
3388 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3389 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3391 if (ofproto_rule_is_hidden(rule) && c->cr.priority <= UINT16_MAX) {
3393 } else if (rule->pending) {
3394 return OFPROTO_POSTPONE;
3396 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3397 && ofproto_rule_has_out_port(rule, c->out_port)
3398 && ofproto_rule_has_out_group(rule, c->out_group)
3399 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) {
3400 rule_collection_add(rules, rule);
3406 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3407 * on classifiers rules are done in the "loose" way required for OpenFlow
3408 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3411 * Hidden rules are always omitted.
3413 * Returns 0 on success, otherwise an OpenFlow error code. */
3415 collect_rules_loose(struct ofproto *ofproto,
3416 const struct rule_criteria *criteria,
3417 struct rule_collection *rules)
3418 OVS_REQUIRES(ofproto_mutex)
3420 struct oftable *table;
3423 rule_collection_init(rules);
3425 error = check_table_id(ofproto, criteria->table_id);
3430 if (criteria->cookie_mask == OVS_BE64_MAX) {
3433 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3434 hash_cookie(criteria->cookie),
3435 &ofproto->cookies) {
3436 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
3437 error = collect_rule(rule, criteria, rules);
3444 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3445 struct cls_cursor cursor;
3448 ovs_rwlock_rdlock(&table->cls.rwlock);
3449 cls_cursor_init(&cursor, &table->cls, &criteria->cr);
3450 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
3451 error = collect_rule(rule, criteria, rules);
3456 ovs_rwlock_unlock(&table->cls.rwlock);
3462 rule_collection_destroy(rules);
3467 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3468 * on classifiers rules are done in the "strict" way required for OpenFlow
3469 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3470 * rules on list 'rules'.
3472 * Hidden rules are always omitted.
3474 * Returns 0 on success, otherwise an OpenFlow error code. */
3476 collect_rules_strict(struct ofproto *ofproto,
3477 const struct rule_criteria *criteria,
3478 struct rule_collection *rules)
3479 OVS_REQUIRES(ofproto_mutex)
3481 struct oftable *table;
3484 rule_collection_init(rules);
3486 error = check_table_id(ofproto, criteria->table_id);
3491 if (criteria->cookie_mask == OVS_BE64_MAX) {
3494 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3495 hash_cookie(criteria->cookie),
3496 &ofproto->cookies) {
3497 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
3498 error = collect_rule(rule, criteria, rules);
3505 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3508 ovs_rwlock_rdlock(&table->cls.rwlock);
3509 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3510 &table->cls, &criteria->cr));
3511 ovs_rwlock_unlock(&table->cls.rwlock);
3513 error = collect_rule(rule, criteria, rules);
3523 rule_collection_destroy(rules);
3528 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3529 * forced into the range of a uint16_t. */
3531 age_secs(long long int age_ms)
3533 return (age_ms < 0 ? 0
3534 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
3535 : (unsigned int) age_ms / 1000);
3539 handle_flow_stats_request(struct ofconn *ofconn,
3540 const struct ofp_header *request)
3541 OVS_EXCLUDED(ofproto_mutex)
3543 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3544 struct ofputil_flow_stats_request fsr;
3545 struct rule_criteria criteria;
3546 struct rule_collection rules;
3547 struct list replies;
3551 error = ofputil_decode_flow_stats_request(&fsr, request);
3556 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
3557 fsr.cookie_mask, fsr.out_port, fsr.out_group);
3559 ovs_mutex_lock(&ofproto_mutex);
3560 error = collect_rules_loose(ofproto, &criteria, &rules);
3561 rule_criteria_destroy(&criteria);
3563 rule_collection_ref(&rules);
3565 ovs_mutex_unlock(&ofproto_mutex);
3571 ofpmp_init(&replies, request);
3572 for (i = 0; i < rules.n; i++) {
3573 struct rule *rule = rules.rules[i];
3574 long long int now = time_msec();
3575 struct ofputil_flow_stats fs;
3576 long long int created, used, modified;
3577 struct rule_actions *actions;
3578 enum ofputil_flow_mod_flags flags;
3580 ovs_mutex_lock(&rule->mutex);
3581 fs.cookie = rule->flow_cookie;
3582 fs.idle_timeout = rule->idle_timeout;
3583 fs.hard_timeout = rule->hard_timeout;
3584 created = rule->created;
3586 modified = rule->modified;
3587 actions = rule_get_actions__(rule);
3588 flags = rule->flags;
3589 ovs_mutex_unlock(&rule->mutex);
3591 minimatch_expand(&rule->cr.match, &fs.match);
3592 fs.table_id = rule->table_id;
3593 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
3594 fs.priority = rule->cr.priority;
3595 fs.idle_age = age_secs(now - used);
3596 fs.hard_age = age_secs(now - modified);
3597 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
3599 fs.ofpacts = actions->ofpacts;
3600 fs.ofpacts_len = actions->ofpacts_len;
3603 ofputil_append_flow_stats_reply(&fs, &replies);
3605 rule_actions_unref(actions);
3608 rule_collection_unref(&rules);
3609 rule_collection_destroy(&rules);
3611 ofconn_send_replies(ofconn, &replies);
3617 flow_stats_ds(struct rule *rule, struct ds *results)
3619 uint64_t packet_count, byte_count;
3620 struct rule_actions *actions;
3621 long long int created;
3623 rule->ofproto->ofproto_class->rule_get_stats(rule,
3624 &packet_count, &byte_count);
3626 ovs_mutex_lock(&rule->mutex);
3627 actions = rule_get_actions__(rule);
3628 created = rule->created;
3629 ovs_mutex_unlock(&rule->mutex);
3631 if (rule->table_id != 0) {
3632 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
3634 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
3635 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
3636 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
3637 cls_rule_format(&rule->cr, results);
3638 ds_put_char(results, ',');
3640 ds_put_cstr(results, "actions=");
3641 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
3643 ds_put_cstr(results, "\n");
3645 rule_actions_unref(actions);
3648 /* Adds a pretty-printed description of all flows to 'results', including
3649 * hidden flows (e.g., set up by in-band control). */
3651 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
3653 struct oftable *table;
3655 OFPROTO_FOR_EACH_TABLE (table, p) {
3656 struct cls_cursor cursor;
3659 ovs_rwlock_rdlock(&table->cls.rwlock);
3660 cls_cursor_init(&cursor, &table->cls, NULL);
3661 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
3662 flow_stats_ds(rule, results);
3664 ovs_rwlock_unlock(&table->cls.rwlock);
3668 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3669 * '*engine_type' and '*engine_id', respectively. */
3671 ofproto_get_netflow_ids(const struct ofproto *ofproto,
3672 uint8_t *engine_type, uint8_t *engine_id)
3674 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
3677 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns
3678 * true if the port's CFM status was successfully stored into '*status'.
3679 * Returns false if the port did not have CFM configured, in which case
3680 * '*status' is indeterminate.
3682 * The caller must provide and owns '*status', and must free 'status->rmps'. */
3684 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
3685 struct ofproto_cfm_status *status)
3687 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
3689 && ofproto->ofproto_class->get_cfm_status
3690 && ofproto->ofproto_class->get_cfm_status(ofport, status));
3694 handle_aggregate_stats_request(struct ofconn *ofconn,
3695 const struct ofp_header *oh)
3696 OVS_EXCLUDED(ofproto_mutex)
3698 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3699 struct ofputil_flow_stats_request request;
3700 struct ofputil_aggregate_stats stats;
3701 bool unknown_packets, unknown_bytes;
3702 struct rule_criteria criteria;
3703 struct rule_collection rules;
3704 struct ofpbuf *reply;
3708 error = ofputil_decode_flow_stats_request(&request, oh);
3713 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
3714 request.cookie, request.cookie_mask,
3715 request.out_port, request.out_group);
3717 ovs_mutex_lock(&ofproto_mutex);
3718 error = collect_rules_loose(ofproto, &criteria, &rules);
3719 rule_criteria_destroy(&criteria);
3721 rule_collection_ref(&rules);
3723 ovs_mutex_unlock(&ofproto_mutex);
3729 memset(&stats, 0, sizeof stats);
3730 unknown_packets = unknown_bytes = false;
3731 for (i = 0; i < rules.n; i++) {
3732 struct rule *rule = rules.rules[i];
3733 uint64_t packet_count;
3734 uint64_t byte_count;
3736 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
3739 if (packet_count == UINT64_MAX) {
3740 unknown_packets = true;
3742 stats.packet_count += packet_count;
3745 if (byte_count == UINT64_MAX) {
3746 unknown_bytes = true;
3748 stats.byte_count += byte_count;
3753 if (unknown_packets) {
3754 stats.packet_count = UINT64_MAX;
3756 if (unknown_bytes) {
3757 stats.byte_count = UINT64_MAX;
3760 rule_collection_unref(&rules);
3761 rule_collection_destroy(&rules);
3763 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
3764 ofconn_send_reply(ofconn, reply);
3769 struct queue_stats_cbdata {
3770 struct ofport *ofport;
3771 struct list replies;
3776 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
3777 const struct netdev_queue_stats *stats)
3779 struct ofputil_queue_stats oqs;
3781 oqs.port_no = cbdata->ofport->pp.port_no;
3782 oqs.queue_id = queue_id;
3783 oqs.tx_bytes = stats->tx_bytes;
3784 oqs.tx_packets = stats->tx_packets;
3785 oqs.tx_errors = stats->tx_errors;
3786 if (stats->created != LLONG_MIN) {
3787 calc_duration(stats->created, cbdata->now,
3788 &oqs.duration_sec, &oqs.duration_nsec);
3790 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
3792 ofputil_append_queue_stat(&cbdata->replies, &oqs);
3796 handle_queue_stats_dump_cb(uint32_t queue_id,
3797 struct netdev_queue_stats *stats,
3800 struct queue_stats_cbdata *cbdata = cbdata_;
3802 put_queue_stats(cbdata, queue_id, stats);
3806 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
3807 struct queue_stats_cbdata *cbdata)
3809 cbdata->ofport = port;
3810 if (queue_id == OFPQ_ALL) {
3811 netdev_dump_queue_stats(port->netdev,
3812 handle_queue_stats_dump_cb, cbdata);
3814 struct netdev_queue_stats stats;
3816 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
3817 put_queue_stats(cbdata, queue_id, &stats);
3819 return OFPERR_OFPQOFC_BAD_QUEUE;
3826 handle_queue_stats_request(struct ofconn *ofconn,
3827 const struct ofp_header *rq)
3829 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3830 struct queue_stats_cbdata cbdata;
3831 struct ofport *port;
3833 struct ofputil_queue_stats_request oqsr;
3835 COVERAGE_INC(ofproto_queue_req);
3837 ofpmp_init(&cbdata.replies, rq);
3838 cbdata.now = time_msec();
3840 error = ofputil_decode_queue_stats_request(rq, &oqsr);
3845 if (oqsr.port_no == OFPP_ANY) {
3846 error = OFPERR_OFPQOFC_BAD_QUEUE;
3847 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3848 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
3853 port = ofproto_get_port(ofproto, oqsr.port_no);
3855 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
3856 : OFPERR_OFPQOFC_BAD_PORT);
3859 ofconn_send_replies(ofconn, &cbdata.replies);
3861 ofpbuf_list_delete(&cbdata.replies);
3868 is_flow_deletion_pending(const struct ofproto *ofproto,
3869 const struct cls_rule *cls_rule,
3871 OVS_REQUIRES(ofproto_mutex)
3873 if (!hmap_is_empty(&ofproto->deletions)) {
3874 struct ofoperation *op;
3876 HMAP_FOR_EACH_WITH_HASH (op, hmap_node,
3877 cls_rule_hash(cls_rule, table_id),
3878 &ofproto->deletions) {
3879 if (cls_rule_equal(cls_rule, &op->rule->cr)) {
3889 should_evict_a_rule(struct oftable *table, unsigned int extra_space)
3890 OVS_REQUIRES(ofproto_mutex)
3891 OVS_NO_THREAD_SAFETY_ANALYSIS
3893 return classifier_count(&table->cls) + extra_space > table->max_flows;
3897 evict_rules_from_table(struct ofproto *ofproto, struct oftable *table,
3898 unsigned int extra_space)
3899 OVS_REQUIRES(ofproto_mutex)
3901 while (should_evict_a_rule(table, extra_space)) {
3904 if (!choose_rule_to_evict(table, &rule)) {
3905 return OFPERR_OFPFMFC_TABLE_FULL;
3906 } else if (rule->pending) {
3907 return OFPROTO_POSTPONE;
3909 struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
3910 delete_flow__(rule, group, OFPRR_EVICTION);
3911 ofopgroup_submit(group);
3918 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3919 * in which no matching flow already exists in the flow table.
3921 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3922 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
3923 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
3924 * initiated now but may be retried later.
3926 * The caller retains ownership of 'fm->ofpacts'.
3928 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3931 add_flow(struct ofproto *ofproto, struct ofconn *ofconn,
3932 struct ofputil_flow_mod *fm, const struct ofp_header *request)
3933 OVS_REQUIRES(ofproto_mutex)
3935 struct oftable *table;
3936 struct ofopgroup *group;
3942 error = check_table_id(ofproto, fm->table_id);
3948 if (fm->table_id == 0xff) {
3949 if (ofproto->ofproto_class->rule_choose_table) {
3950 error = ofproto->ofproto_class->rule_choose_table(ofproto,
3956 ovs_assert(table_id < ofproto->n_tables);
3960 } else if (fm->table_id < ofproto->n_tables) {
3961 table_id = fm->table_id;
3963 return OFPERR_OFPBRC_BAD_TABLE_ID;
3966 table = &ofproto->tables[table_id];
3968 if (table->flags & OFTABLE_READONLY) {
3969 return OFPERR_OFPBRC_EPERM;
3972 cls_rule_init(&cr, &fm->match, fm->priority);
3974 /* Transform "add" into "modify" if there's an existing identical flow. */
3975 ovs_rwlock_rdlock(&table->cls.rwlock);
3976 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
3977 ovs_rwlock_unlock(&table->cls.rwlock);
3979 cls_rule_destroy(&cr);
3980 if (!rule_is_modifiable(rule)) {
3981 return OFPERR_OFPBRC_EPERM;
3982 } else if (rule->pending) {
3983 return OFPROTO_POSTPONE;
3985 struct rule_collection rules;
3987 rule_collection_init(&rules);
3988 rule_collection_add(&rules, rule);
3989 fm->modify_cookie = true;
3990 error = modify_flows__(ofproto, ofconn, fm, request, &rules);
3991 rule_collection_destroy(&rules);
3997 /* Serialize against pending deletion. */
3998 if (is_flow_deletion_pending(ofproto, &cr, table_id)) {
3999 cls_rule_destroy(&cr);
4000 return OFPROTO_POSTPONE;
4003 /* Check for overlap, if requested. */
4004 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
4007 ovs_rwlock_rdlock(&table->cls.rwlock);
4008 overlaps = classifier_rule_overlaps(&table->cls, &cr);
4009 ovs_rwlock_unlock(&table->cls.rwlock);
4012 cls_rule_destroy(&cr);
4013 return OFPERR_OFPFMFC_OVERLAP;
4017 /* If necessary, evict an existing rule to clear out space. */
4018 error = evict_rules_from_table(ofproto, table, 1);
4020 cls_rule_destroy(&cr);
4024 /* Allocate new rule. */
4025 rule = ofproto->ofproto_class->rule_alloc();
4027 cls_rule_destroy(&cr);
4028 VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
4029 ofproto->name, ovs_strerror(error));
4033 /* Initialize base state. */
4034 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
4035 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr);
4036 atomic_init(&rule->ref_count, 1);
4037 rule->pending = NULL;
4038 rule->flow_cookie = fm->new_cookie;
4039 rule->created = rule->modified = rule->used = time_msec();
4041 ovs_mutex_init(&rule->mutex);
4042 ovs_mutex_lock(&rule->mutex);
4043 rule->idle_timeout = fm->idle_timeout;
4044 rule->hard_timeout = fm->hard_timeout;
4045 ovs_mutex_unlock(&rule->mutex);
4047 *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables;
4048 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4049 rule->actions = rule_actions_create(ofproto, fm->ofpacts, fm->ofpacts_len);
4050 list_init(&rule->meter_list_node);
4051 rule->eviction_group = NULL;
4052 list_init(&rule->expirable);
4053 rule->monitor_flags = 0;
4054 rule->add_seqno = 0;
4055 rule->modify_seqno = 0;
4057 /* Construct rule, initializing derived state. */
4058 error = ofproto->ofproto_class->rule_construct(rule);
4060 ofproto_rule_destroy__(rule);
4065 oftable_insert_rule(rule);
4067 group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
4068 ofoperation_create(group, rule, OFOPERATION_ADD, 0);
4069 ofproto->ofproto_class->rule_insert(rule);
4070 ofopgroup_submit(group);
4075 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4077 /* Modifies the rules listed in 'rules', changing their actions to match those
4080 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4083 * Returns 0 on success, otherwise an OpenFlow error code. */
4085 modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
4086 struct ofputil_flow_mod *fm, const struct ofp_header *request,
4087 const struct rule_collection *rules)
4088 OVS_REQUIRES(ofproto_mutex)
4090 enum ofoperation_type type;
4091 struct ofopgroup *group;
4095 type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY;
4096 group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
4097 error = OFPERR_OFPBRC_EPERM;
4098 for (i = 0; i < rules->n; i++) {
4099 struct rule *rule = rules->rules[i];
4100 struct ofoperation *op;
4101 bool actions_changed;
4102 bool reset_counters;
4104 /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */
4106 if (rule_is_modifiable(rule)) {
4107 /* At least one rule is modifiable, don't report EPERM error. */
4113 actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
4114 rule->actions->ofpacts,
4115 rule->actions->ofpacts_len);
4117 op = ofoperation_create(group, rule, type, 0);
4119 if (fm->modify_cookie && fm->new_cookie != OVS_BE64_MAX) {
4120 ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie);
4122 if (type == OFOPERATION_REPLACE) {
4123 ovs_mutex_lock(&rule->mutex);
4124 rule->idle_timeout = fm->idle_timeout;
4125 rule->hard_timeout = fm->hard_timeout;
4126 ovs_mutex_unlock(&rule->mutex);
4128 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4129 if (fm->idle_timeout || fm->hard_timeout) {
4130 if (!rule->eviction_group) {
4131 eviction_group_add_rule(rule);
4134 eviction_group_remove_rule(rule);
4138 reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
4139 if (actions_changed || reset_counters) {
4140 struct rule_actions *new_actions;
4142 op->actions = rule->actions;
4143 new_actions = rule_actions_create(ofproto,
4144 fm->ofpacts, fm->ofpacts_len);
4146 ovs_mutex_lock(&rule->mutex);
4147 rule->actions = new_actions;
4148 ovs_mutex_unlock(&rule->mutex);
4150 rule->ofproto->ofproto_class->rule_modify_actions(rule,
4153 ofoperation_complete(op, 0);
4156 ofopgroup_submit(group);
4162 modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn,
4163 struct ofputil_flow_mod *fm, const struct ofp_header *request)
4164 OVS_REQUIRES(ofproto_mutex)
4166 if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) {
4169 return add_flow(ofproto, ofconn, fm, request);
4172 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4175 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4178 modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
4179 struct ofputil_flow_mod *fm,
4180 const struct ofp_header *request)
4181 OVS_REQUIRES(ofproto_mutex)
4183 struct rule_criteria criteria;
4184 struct rule_collection rules;
4187 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4188 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4189 error = collect_rules_loose(ofproto, &criteria, &rules);
4190 rule_criteria_destroy(&criteria);
4193 error = (rules.n > 0
4194 ? modify_flows__(ofproto, ofconn, fm, request, &rules)
4195 : modify_flows_add(ofproto, ofconn, fm, request));
4198 rule_collection_destroy(&rules);
4203 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4206 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4209 modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
4210 struct ofputil_flow_mod *fm,
4211 const struct ofp_header *request)
4212 OVS_REQUIRES(ofproto_mutex)
4214 struct rule_criteria criteria;
4215 struct rule_collection rules;
4218 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4219 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4220 error = collect_rules_strict(ofproto, &criteria, &rules);
4221 rule_criteria_destroy(&criteria);
4225 error = modify_flows_add(ofproto, ofconn, fm, request);
4226 } else if (rules.n == 1) {
4227 error = modify_flows__(ofproto, ofconn, fm, request, &rules);
4231 rule_collection_destroy(&rules);
4236 /* OFPFC_DELETE implementation. */
4239 delete_flow__(struct rule *rule, struct ofopgroup *group,
4240 enum ofp_flow_removed_reason reason)
4241 OVS_REQUIRES(ofproto_mutex)
4243 struct ofproto *ofproto = rule->ofproto;
4245 ofproto_rule_send_removed(rule, reason);
4247 ofoperation_create(group, rule, OFOPERATION_DELETE, reason);
4248 oftable_remove_rule(rule);
4249 ofproto->ofproto_class->rule_delete(rule);
4252 /* Deletes the rules listed in 'rules'.
4254 * Returns 0 on success, otherwise an OpenFlow error code. */
4256 delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
4257 const struct ofp_header *request,
4258 const struct rule_collection *rules,
4259 enum ofp_flow_removed_reason reason)
4260 OVS_REQUIRES(ofproto_mutex)
4262 struct ofopgroup *group;
4265 group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
4266 for (i = 0; i < rules->n; i++) {
4267 delete_flow__(rules->rules[i], group, reason);
4269 ofopgroup_submit(group);
4274 /* Implements OFPFC_DELETE. */
4276 delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
4277 const struct ofputil_flow_mod *fm,
4278 const struct ofp_header *request)
4279 OVS_REQUIRES(ofproto_mutex)
4281 struct rule_criteria criteria;
4282 struct rule_collection rules;
4285 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4286 fm->cookie, fm->cookie_mask,
4287 fm->out_port, fm->out_group);
4288 error = collect_rules_loose(ofproto, &criteria, &rules);
4289 rule_criteria_destroy(&criteria);
4291 if (!error && rules.n > 0) {
4292 error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
4294 rule_collection_destroy(&rules);
4299 /* Implements OFPFC_DELETE_STRICT. */
4301 delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
4302 const struct ofputil_flow_mod *fm,
4303 const struct ofp_header *request)
4304 OVS_REQUIRES(ofproto_mutex)
4306 struct rule_criteria criteria;
4307 struct rule_collection rules;
4310 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4311 fm->cookie, fm->cookie_mask,
4312 fm->out_port, fm->out_group);
4313 error = collect_rules_strict(ofproto, &criteria, &rules);
4314 rule_criteria_destroy(&criteria);
4316 if (!error && rules.n > 0) {
4317 error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
4319 rule_collection_destroy(&rules);
4325 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
4326 OVS_REQUIRES(ofproto_mutex)
4328 struct ofputil_flow_removed fr;
4330 if (ofproto_rule_is_hidden(rule) ||
4331 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
4335 minimatch_expand(&rule->cr.match, &fr.match);
4336 fr.priority = rule->cr.priority;
4337 fr.cookie = rule->flow_cookie;
4339 fr.table_id = rule->table_id;
4340 calc_duration(rule->created, time_msec(),
4341 &fr.duration_sec, &fr.duration_nsec);
4342 ovs_mutex_lock(&rule->mutex);
4343 fr.idle_timeout = rule->idle_timeout;
4344 fr.hard_timeout = rule->hard_timeout;
4345 ovs_mutex_unlock(&rule->mutex);
4346 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
4349 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
4352 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4353 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4356 * 'rule' must not have a pending operation (that is, 'rule->pending' must be
4359 * ofproto implementation ->run() functions should use this function to expire
4360 * OpenFlow flows. */
4362 ofproto_rule_expire(struct rule *rule, uint8_t reason)
4363 OVS_REQUIRES(ofproto_mutex)
4365 struct ofproto *ofproto = rule->ofproto;
4367 ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT
4368 || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE);
4370 ofproto_rule_delete__(ofproto, rule, reason);
4373 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4374 * means "infinite". */
4376 reduce_timeout(uint16_t max, uint16_t *timeout)
4378 if (max && (!*timeout || *timeout > max)) {
4383 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
4384 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
4385 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
4387 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
4389 ofproto_rule_reduce_timeouts(struct rule *rule,
4390 uint16_t idle_timeout, uint16_t hard_timeout)
4391 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
4393 if (!idle_timeout && !hard_timeout) {
4397 ovs_mutex_lock(&ofproto_mutex);
4398 if (list_is_empty(&rule->expirable)) {
4399 list_insert(&rule->ofproto->expirable, &rule->expirable);
4401 ovs_mutex_unlock(&ofproto_mutex);
4403 ovs_mutex_lock(&rule->mutex);
4404 reduce_timeout(idle_timeout, &rule->idle_timeout);
4405 reduce_timeout(hard_timeout, &rule->hard_timeout);
4406 ovs_mutex_unlock(&rule->mutex);
4410 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
4411 OVS_EXCLUDED(ofproto_mutex)
4413 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4414 struct ofputil_flow_mod fm;
4415 uint64_t ofpacts_stub[1024 / 8];
4416 struct ofpbuf ofpacts;
4420 error = reject_slave_controller(ofconn);
4425 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
4426 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
4428 u16_to_ofp(ofproto->max_ports),
4431 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
4434 error = handle_flow_mod__(ofproto, ofconn, &fm, oh);
4437 goto exit_free_ofpacts;
4440 /* Record the operation for logging a summary report. */
4441 switch (fm.command) {
4447 case OFPFC_MODIFY_STRICT:
4448 ofproto->n_modify++;
4452 case OFPFC_DELETE_STRICT:
4453 ofproto->n_delete++;
4458 if (ofproto->next_op_report == LLONG_MAX) {
4459 ofproto->first_op = now;
4460 ofproto->next_op_report = MAX(now + 10 * 1000,
4461 ofproto->op_backoff);
4462 ofproto->op_backoff = ofproto->next_op_report + 60 * 1000;
4464 ofproto->last_op = now;
4467 ofpbuf_uninit(&ofpacts);
4473 handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn,
4474 struct ofputil_flow_mod *fm, const struct ofp_header *oh)
4475 OVS_EXCLUDED(ofproto_mutex)
4479 ovs_mutex_lock(&ofproto_mutex);
4480 if (ofproto->n_pending < 50) {
4481 switch (fm->command) {
4483 error = add_flow(ofproto, ofconn, fm, oh);
4487 error = modify_flows_loose(ofproto, ofconn, fm, oh);
4490 case OFPFC_MODIFY_STRICT:
4491 error = modify_flow_strict(ofproto, ofconn, fm, oh);
4495 error = delete_flows_loose(ofproto, ofconn, fm, oh);
4498 case OFPFC_DELETE_STRICT:
4499 error = delete_flow_strict(ofproto, ofconn, fm, oh);
4503 if (fm->command > 0xff) {
4504 VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but "
4505 "flow_mod_table_id extension is not enabled",
4508 error = OFPERR_OFPFMFC_BAD_COMMAND;
4512 ovs_assert(!list_is_empty(&ofproto->pending));
4513 error = OFPROTO_POSTPONE;
4515 ovs_mutex_unlock(&ofproto_mutex);
4517 run_rule_executes(ofproto);
4522 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
4524 struct ofputil_role_request request;
4525 struct ofputil_role_request reply;
4529 error = ofputil_decode_role_message(oh, &request);
4534 if (request.role != OFPCR12_ROLE_NOCHANGE) {
4535 if (ofconn_get_role(ofconn) != request.role
4536 && ofconn_has_pending_opgroups(ofconn)) {
4537 return OFPROTO_POSTPONE;
4540 if (request.have_generation_id
4541 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
4542 return OFPERR_OFPRRFC_STALE;
4545 ofconn_set_role(ofconn, request.role);
4548 reply.role = ofconn_get_role(ofconn);
4549 reply.have_generation_id = ofconn_get_master_election_id(
4550 ofconn, &reply.generation_id);
4551 buf = ofputil_encode_role_reply(oh, &reply);
4552 ofconn_send_reply(ofconn, buf);
4558 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
4559 const struct ofp_header *oh)
4561 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
4562 enum ofputil_protocol cur, next;
4564 cur = ofconn_get_protocol(ofconn);
4565 next = ofputil_protocol_set_tid(cur, msg->set != 0);
4566 ofconn_set_protocol(ofconn, next);
4572 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
4574 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
4575 enum ofputil_protocol cur, next;
4576 enum ofputil_protocol next_base;
4578 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
4580 return OFPERR_OFPBRC_EPERM;
4583 cur = ofconn_get_protocol(ofconn);
4584 next = ofputil_protocol_set_base(cur, next_base);
4585 if (cur != next && ofconn_has_pending_opgroups(ofconn)) {
4586 /* Avoid sending async messages in surprising protocol. */
4587 return OFPROTO_POSTPONE;
4590 ofconn_set_protocol(ofconn, next);
4595 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
4596 const struct ofp_header *oh)
4598 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
4601 format = ntohl(msg->format);
4602 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
4603 return OFPERR_OFPBRC_EPERM;
4606 if (format != ofconn_get_packet_in_format(ofconn)
4607 && ofconn_has_pending_opgroups(ofconn)) {
4608 /* Avoid sending async message in surprsing packet in format. */
4609 return OFPROTO_POSTPONE;
4612 ofconn_set_packet_in_format(ofconn, format);
4617 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
4619 const struct nx_async_config *msg = ofpmsg_body(oh);
4620 uint32_t master[OAM_N_TYPES];
4621 uint32_t slave[OAM_N_TYPES];
4623 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
4624 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
4625 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
4627 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
4628 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
4629 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
4631 ofconn_set_async_config(ofconn, master, slave);
4632 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
4633 !ofconn_get_miss_send_len(ofconn)) {
4634 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
4641 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
4644 uint32_t master[OAM_N_TYPES];
4645 uint32_t slave[OAM_N_TYPES];
4646 struct nx_async_config *msg;
4648 ofconn_get_async_config(ofconn, master, slave);
4649 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
4650 msg = ofpbuf_put_zeros(buf, sizeof *msg);
4652 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
4653 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
4654 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
4656 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
4657 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
4658 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
4660 ofconn_send_reply(ofconn, buf);
4666 handle_nxt_set_controller_id(struct ofconn *ofconn,
4667 const struct ofp_header *oh)
4669 const struct nx_controller_id *nci = ofpmsg_body(oh);
4671 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
4672 return OFPERR_NXBRC_MUST_BE_ZERO;
4675 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
4680 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
4684 if (ofconn_has_pending_opgroups(ofconn)) {
4685 return OFPROTO_POSTPONE;
4688 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
4689 ? OFPRAW_OFPT10_BARRIER_REPLY
4690 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
4691 ofconn_send_reply(ofconn, buf);
4696 ofproto_compose_flow_refresh_update(const struct rule *rule,
4697 enum nx_flow_monitor_flags flags,
4699 OVS_REQUIRES(ofproto_mutex)
4701 struct ofoperation *op = rule->pending;
4702 const struct rule_actions *actions;
4703 struct ofputil_flow_update fu;
4706 if (op && op->type == OFOPERATION_ADD) {
4707 /* We'll report the final flow when the operation completes. Reporting
4708 * it now would cause a duplicate report later. */
4712 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
4713 ? NXFME_ADDED : NXFME_MODIFIED);
4715 ovs_mutex_lock(&rule->mutex);
4716 fu.idle_timeout = rule->idle_timeout;
4717 fu.hard_timeout = rule->hard_timeout;
4718 ovs_mutex_unlock(&rule->mutex);
4719 fu.table_id = rule->table_id;
4720 fu.cookie = rule->flow_cookie;
4721 minimatch_expand(&rule->cr.match, &match);
4723 fu.priority = rule->cr.priority;
4725 if (!(flags & NXFMF_ACTIONS)) {
4728 actions = rule->actions;
4730 /* An operation is in progress. Use the previous version of the flow's
4731 * actions, so that when the operation commits we report the change. */
4733 case OFOPERATION_ADD:
4736 case OFOPERATION_MODIFY:
4737 case OFOPERATION_REPLACE:
4738 actions = op->actions ? op->actions : rule->actions;
4741 case OFOPERATION_DELETE:
4742 actions = rule->actions;
4749 fu.ofpacts = actions ? actions->ofpacts : NULL;
4750 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
4752 if (list_is_empty(msgs)) {
4753 ofputil_start_flow_update(msgs);
4755 ofputil_append_flow_update(&fu, msgs);
4759 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
4761 OVS_REQUIRES(ofproto_mutex)
4765 for (i = 0; i < rules->n; i++) {
4766 struct rule *rule = rules->rules[i];
4767 enum nx_flow_monitor_flags flags = rule->monitor_flags;
4768 rule->monitor_flags = 0;
4770 ofproto_compose_flow_refresh_update(rule, flags, msgs);
4775 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
4776 struct rule *rule, uint64_t seqno,
4777 struct rule_collection *rules)
4778 OVS_REQUIRES(ofproto_mutex)
4780 enum nx_flow_monitor_flags update;
4782 if (ofproto_rule_is_hidden(rule)) {
4787 ? ofoperation_has_out_port(rule->pending, m->out_port)
4788 : ofproto_rule_has_out_port(rule, m->out_port))) {
4793 if (rule->add_seqno > seqno) {
4794 update = NXFMF_ADD | NXFMF_MODIFY;
4795 } else if (rule->modify_seqno > seqno) {
4796 update = NXFMF_MODIFY;
4801 if (!(m->flags & update)) {
4805 update = NXFMF_INITIAL;
4808 if (!rule->monitor_flags) {
4809 rule_collection_add(rules, rule);
4811 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
4815 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
4817 struct rule_collection *rules)
4818 OVS_REQUIRES(ofproto_mutex)
4820 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
4821 const struct ofoperation *op;
4822 const struct oftable *table;
4823 struct cls_rule target;
4825 cls_rule_init_from_minimatch(&target, &m->match, 0);
4826 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
4827 struct cls_cursor cursor;
4830 ovs_rwlock_rdlock(&table->cls.rwlock);
4831 cls_cursor_init(&cursor, &table->cls, &target);
4832 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
4833 ovs_assert(!rule->pending); /* XXX */
4834 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
4836 ovs_rwlock_unlock(&table->cls.rwlock);
4839 HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) {
4840 struct rule *rule = op->rule;
4842 if (((m->table_id == 0xff
4843 ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN)
4844 : m->table_id == rule->table_id))
4845 && cls_rule_is_loose_match(&rule->cr, &target.match)) {
4846 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
4849 cls_rule_destroy(&target);
4853 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
4854 struct rule_collection *rules)
4855 OVS_REQUIRES(ofproto_mutex)
4857 if (m->flags & NXFMF_INITIAL) {
4858 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
4863 ofmonitor_collect_resume_rules(struct ofmonitor *m,
4864 uint64_t seqno, struct rule_collection *rules)
4865 OVS_REQUIRES(ofproto_mutex)
4867 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
4871 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
4872 OVS_EXCLUDED(ofproto_mutex)
4874 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4875 struct ofmonitor **monitors;
4876 size_t n_monitors, allocated_monitors;
4877 struct rule_collection rules;
4878 struct list replies;
4884 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4886 n_monitors = allocated_monitors = 0;
4888 ovs_mutex_lock(&ofproto_mutex);
4890 struct ofputil_flow_monitor_request request;
4891 struct ofmonitor *m;
4894 retval = ofputil_decode_flow_monitor_request(&request, &b);
4895 if (retval == EOF) {
4897 } else if (retval) {
4902 if (request.table_id != 0xff
4903 && request.table_id >= ofproto->n_tables) {
4904 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4908 error = ofmonitor_create(&request, ofconn, &m);
4913 if (n_monitors >= allocated_monitors) {
4914 monitors = x2nrealloc(monitors, &allocated_monitors,
4917 monitors[n_monitors++] = m;
4920 rule_collection_init(&rules);
4921 for (i = 0; i < n_monitors; i++) {
4922 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
4925 ofpmp_init(&replies, oh);
4926 ofmonitor_compose_refresh_updates(&rules, &replies);
4927 ovs_mutex_unlock(&ofproto_mutex);
4929 rule_collection_destroy(&rules);
4931 ofconn_send_replies(ofconn, &replies);
4937 for (i = 0; i < n_monitors; i++) {
4938 ofmonitor_destroy(monitors[i]);
4941 ovs_mutex_unlock(&ofproto_mutex);
4947 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
4948 OVS_EXCLUDED(ofproto_mutex)
4950 struct ofmonitor *m;
4954 id = ofputil_decode_flow_monitor_cancel(oh);
4956 ovs_mutex_lock(&ofproto_mutex);
4957 m = ofmonitor_lookup(ofconn, id);
4959 ofmonitor_destroy(m);
4962 error = OFPERR_NXBRC_FM_BAD_ID;
4964 ovs_mutex_unlock(&ofproto_mutex);
4969 /* Meters implementation.
4971 * Meter table entry, indexed by the OpenFlow meter_id.
4972 * These are always dynamically allocated to allocate enough space for
4974 * 'created' is used to compute the duration for meter stats.
4975 * 'list rules' is needed so that we can delete the dependent rules when the
4976 * meter table entry is deleted.
4977 * 'provider_meter_id' is for the provider's private use.
4980 long long int created; /* Time created. */
4981 struct list rules; /* List of "struct rule_dpif"s. */
4982 ofproto_meter_id provider_meter_id;
4983 uint16_t flags; /* Meter flags. */
4984 uint16_t n_bands; /* Number of meter bands. */
4985 struct ofputil_meter_band *bands;
4989 * This is used in instruction validation at flow set-up time,
4990 * as flows may not use non-existing meters.
4991 * Return value of UINT32_MAX signifies an invalid meter.
4994 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
4996 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
4997 const struct meter *meter = ofproto->meters[of_meter_id];
4999 return meter->provider_meter_id.uint32;
5006 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5010 meter->flags = config->flags;
5011 meter->n_bands = config->n_bands;
5012 meter->bands = xmemdup(config->bands,
5013 config->n_bands * sizeof *meter->bands);
5016 static struct meter *
5017 meter_create(const struct ofputil_meter_config *config,
5018 ofproto_meter_id provider_meter_id)
5020 struct meter *meter;
5022 meter = xzalloc(sizeof *meter);
5023 meter->provider_meter_id = provider_meter_id;
5024 meter->created = time_msec();
5025 list_init(&meter->rules);
5027 meter_update(meter, config);
5033 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5034 OVS_REQUIRES(ofproto_mutex)
5037 for (mid = first; mid <= last; ++mid) {
5038 struct meter *meter = ofproto->meters[mid];
5040 ofproto->meters[mid] = NULL;
5041 ofproto->ofproto_class->meter_del(ofproto,
5042 meter->provider_meter_id);
5050 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5052 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5053 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5057 return OFPERR_OFPMMFC_METER_EXISTS;
5060 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5063 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5064 *meterp = meter_create(&mm->meter, provider_meter_id);
5070 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5072 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5074 uint32_t provider_meter_id;
5077 return OFPERR_OFPMMFC_UNKNOWN_METER;
5080 provider_meter_id = meter->provider_meter_id.uint32;
5081 error = ofproto->ofproto_class->meter_set(ofproto,
5082 &meter->provider_meter_id,
5084 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5086 meter_update(meter, &mm->meter);
5092 handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh,
5093 struct ofputil_meter_mod *mm)
5094 OVS_EXCLUDED(ofproto_mutex)
5096 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5097 uint32_t meter_id = mm->meter.meter_id;
5098 struct rule_collection rules;
5099 enum ofperr error = 0;
5100 uint32_t first, last;
5102 if (meter_id == OFPM13_ALL) {
5104 last = ofproto->meter_features.max_meters;
5106 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5109 first = last = meter_id;
5112 /* First delete the rules that use this meter. If any of those rules are
5113 * currently being modified, postpone the whole operation until later. */
5114 rule_collection_init(&rules);
5115 ovs_mutex_lock(&ofproto_mutex);
5116 for (meter_id = first; meter_id <= last; ++meter_id) {
5117 struct meter *meter = ofproto->meters[meter_id];
5118 if (meter && !list_is_empty(&meter->rules)) {
5121 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5122 if (rule->pending) {
5123 error = OFPROTO_POSTPONE;
5126 rule_collection_add(&rules, rule);
5131 delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE);
5134 /* Delete the meters. */
5135 meter_delete(ofproto, first, last);
5138 ovs_mutex_unlock(&ofproto_mutex);
5139 rule_collection_destroy(&rules);
5145 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5147 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5148 struct ofputil_meter_mod mm;
5149 uint64_t bands_stub[256 / 8];
5150 struct ofpbuf bands;
5154 error = reject_slave_controller(ofconn);
5159 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5161 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5163 goto exit_free_bands;
5166 meter_id = mm.meter.meter_id;
5168 if (mm.command != OFPMC13_DELETE) {
5169 /* Fails also when meters are not implemented by the provider. */
5170 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5171 error = OFPERR_OFPMMFC_INVALID_METER;
5172 goto exit_free_bands;
5173 } else if (meter_id > ofproto->meter_features.max_meters) {
5174 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5175 goto exit_free_bands;
5177 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5178 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5179 goto exit_free_bands;
5183 switch (mm.command) {
5185 error = handle_add_meter(ofproto, &mm);
5188 case OFPMC13_MODIFY:
5189 error = handle_modify_meter(ofproto, &mm);
5192 case OFPMC13_DELETE:
5193 error = handle_delete_meter(ofconn, oh, &mm);
5197 error = OFPERR_OFPMMFC_BAD_COMMAND;
5202 ofpbuf_uninit(&bands);
5207 handle_meter_features_request(struct ofconn *ofconn,
5208 const struct ofp_header *request)
5210 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5211 struct ofputil_meter_features features;
5214 if (ofproto->ofproto_class->meter_get_features) {
5215 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5217 memset(&features, 0, sizeof features);
5219 b = ofputil_encode_meter_features_reply(&features, request);
5221 ofconn_send_reply(ofconn, b);
5226 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5229 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5230 struct list replies;
5231 uint64_t bands_stub[256 / 8];
5232 struct ofpbuf bands;
5233 uint32_t meter_id, first, last;
5235 ofputil_decode_meter_request(request, &meter_id);
5237 if (meter_id == OFPM13_ALL) {
5239 last = ofproto->meter_features.max_meters;
5241 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5242 !ofproto->meters[meter_id]) {
5243 return OFPERR_OFPMMFC_UNKNOWN_METER;
5245 first = last = meter_id;
5248 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5249 ofpmp_init(&replies, request);
5251 for (meter_id = first; meter_id <= last; ++meter_id) {
5252 struct meter *meter = ofproto->meters[meter_id];
5254 continue; /* Skip non-existing meters. */
5256 if (type == OFPTYPE_METER_STATS_REQUEST) {
5257 struct ofputil_meter_stats stats;
5259 stats.meter_id = meter_id;
5261 /* Provider sets the packet and byte counts, we do the rest. */
5262 stats.flow_count = list_size(&meter->rules);
5263 calc_duration(meter->created, time_msec(),
5264 &stats.duration_sec, &stats.duration_nsec);
5265 stats.n_bands = meter->n_bands;
5266 ofpbuf_clear(&bands);
5268 = ofpbuf_put_uninit(&bands,
5269 meter->n_bands * sizeof *stats.bands);
5271 if (!ofproto->ofproto_class->meter_get(ofproto,
5272 meter->provider_meter_id,
5274 ofputil_append_meter_stats(&replies, &stats);
5276 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5277 struct ofputil_meter_config config;
5279 config.meter_id = meter_id;
5280 config.flags = meter->flags;
5281 config.n_bands = meter->n_bands;
5282 config.bands = meter->bands;
5283 ofputil_append_meter_config(&replies, &config);
5287 ofconn_send_replies(ofconn, &replies);
5288 ofpbuf_uninit(&bands);
5293 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5294 struct ofgroup **group)
5295 OVS_TRY_RDLOCK(true, (*group)->rwlock)
5297 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5298 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5299 hash_int(group_id, 0), &ofproto->groups) {
5300 if ((*group)->group_id == group_id) {
5301 ovs_rwlock_rdlock(&(*group)->rwlock);
5302 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5306 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5311 ofproto_group_release(struct ofgroup *group)
5312 OVS_RELEASES(group->rwlock)
5314 ovs_rwlock_unlock(&group->rwlock);
5318 ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id,
5319 struct ofgroup **group)
5320 OVS_TRY_WRLOCK(true, ofproto->groups_rwlock)
5321 OVS_TRY_WRLOCK(true, (*group)->rwlock)
5323 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5324 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5325 hash_int(group_id, 0), &ofproto->groups) {
5326 if ((*group)->group_id == group_id) {
5327 ovs_rwlock_wrlock(&(*group)->rwlock);
5331 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5336 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
5337 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5339 struct ofgroup *grp;
5341 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5342 hash_int(group_id, 0), &ofproto->groups) {
5343 if (grp->group_id == group_id) {
5351 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5352 OVS_EXCLUDED(ofproto->groups_rwlock)
5356 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5357 exists = ofproto_group_exists__(ofproto, group_id);
5358 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5364 group_get_ref_count(struct ofgroup *group)
5365 OVS_EXCLUDED(ofproto_mutex)
5367 struct ofproto *ofproto = group->ofproto;
5368 struct rule_criteria criteria;
5369 struct rule_collection rules;
5374 match_init_catchall(&match);
5375 rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0),
5376 OFPP_ANY, group->group_id);
5377 ovs_mutex_lock(&ofproto_mutex);
5378 error = collect_rules_loose(ofproto, &criteria, &rules);
5379 ovs_mutex_unlock(&ofproto_mutex);
5380 rule_criteria_destroy(&criteria);
5382 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
5384 rule_collection_destroy(&rules);
5389 append_group_stats(struct ofgroup *group, struct list *replies)
5390 OVS_REQ_RDLOCK(group->rwlock)
5392 struct ofputil_group_stats ogs;
5393 struct ofproto *ofproto = group->ofproto;
5394 long long int now = time_msec();
5397 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
5399 /* Provider sets the packet and byte counts, we do the rest. */
5400 ogs.ref_count = group_get_ref_count(group);
5401 ogs.n_buckets = group->n_buckets;
5403 error = (ofproto->ofproto_class->group_get_stats
5404 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
5407 ogs.packet_count = UINT64_MAX;
5408 ogs.byte_count = UINT64_MAX;
5409 memset(ogs.bucket_stats, 0xff,
5410 ogs.n_buckets * sizeof *ogs.bucket_stats);
5413 ogs.group_id = group->group_id;
5414 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
5416 ofputil_append_group_stats(replies, &ogs);
5418 free(ogs.bucket_stats);
5422 handle_group_stats_request(struct ofconn *ofconn,
5423 const struct ofp_header *request)
5425 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5426 struct list replies;
5428 struct ofgroup *group;
5431 error = ofputil_decode_group_stats_request(request, &group_id);
5436 ofpmp_init(&replies, request);
5438 if (group_id == OFPG_ALL) {
5439 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5440 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5441 ovs_rwlock_rdlock(&group->rwlock);
5442 append_group_stats(group, &replies);
5443 ovs_rwlock_unlock(&group->rwlock);
5445 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5447 if (ofproto_group_lookup(ofproto, group_id, &group)) {
5448 append_group_stats(group, &replies);
5449 ofproto_group_release(group);
5453 ofconn_send_replies(ofconn, &replies);
5459 handle_group_desc_stats_request(struct ofconn *ofconn,
5460 const struct ofp_header *request)
5462 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5463 struct list replies;
5464 struct ofputil_group_desc gds;
5465 struct ofgroup *group;
5467 ofpmp_init(&replies, request);
5469 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5470 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5471 gds.group_id = group->group_id;
5472 gds.type = group->type;
5473 ofputil_append_group_desc_reply(&gds, &group->buckets, &replies);
5475 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5477 ofconn_send_replies(ofconn, &replies);
5483 handle_group_features_stats_request(struct ofconn *ofconn,
5484 const struct ofp_header *request)
5486 struct ofproto *p = ofconn_get_ofproto(ofconn);
5489 msg = ofputil_encode_group_features_reply(&p->ogf, request);
5491 ofconn_send_reply(ofconn, msg);
5498 handle_queue_get_config_request(struct ofconn *ofconn,
5499 const struct ofp_header *oh)
5501 struct ofproto *p = ofconn_get_ofproto(ofconn);
5502 struct netdev_queue_dump queue_dump;
5503 struct ofport *ofport;
5504 unsigned int queue_id;
5505 struct ofpbuf *reply;
5506 struct smap details;
5510 error = ofputil_decode_queue_get_config_request(oh, &request);
5515 ofport = ofproto_get_port(p, request);
5517 return OFPERR_OFPQOFC_BAD_PORT;
5520 reply = ofputil_encode_queue_get_config_reply(oh);
5522 smap_init(&details);
5523 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
5524 struct ofputil_queue_config queue;
5526 /* None of the existing queues have compatible properties, so we
5527 * hard-code omitting min_rate and max_rate. */
5528 queue.queue_id = queue_id;
5529 queue.min_rate = UINT16_MAX;
5530 queue.max_rate = UINT16_MAX;
5531 ofputil_append_queue_get_config_reply(reply, &queue);
5533 smap_destroy(&details);
5535 ofconn_send_reply(ofconn, reply);
5540 /* Implements OFPGC11_ADD
5541 * in which no matching flow already exists in the flow table.
5543 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
5544 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
5545 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
5546 * initiated now but may be retried later.
5548 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
5549 * ownership remains with the caller.
5551 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
5554 add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5556 struct ofgroup *ofgroup;
5559 if (gm->group_id > OFPG_MAX) {
5560 return OFPERR_OFPGMFC_INVALID_GROUP;
5562 if (gm->type > OFPGT11_FF) {
5563 return OFPERR_OFPGMFC_BAD_TYPE;
5566 /* Allocate new group and initialize it. */
5567 ofgroup = ofproto->ofproto_class->group_alloc();
5569 VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name);
5570 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5573 ovs_rwlock_init(&ofgroup->rwlock);
5574 ofgroup->ofproto = ofproto;
5575 ofgroup->group_id = gm->group_id;
5576 ofgroup->type = gm->type;
5577 ofgroup->created = ofgroup->modified = time_msec();
5579 list_move(&ofgroup->buckets, &gm->buckets);
5580 ofgroup->n_buckets = list_size(&ofgroup->buckets);
5582 /* Construct called BEFORE any locks are held. */
5583 error = ofproto->ofproto_class->group_construct(ofgroup);
5588 /* We wrlock as late as possible to minimize the time we jam any other
5589 * threads: No visible state changes before acquiring the lock. */
5590 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5592 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5593 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5597 if (ofproto_group_exists__(ofproto, gm->group_id)) {
5598 error = OFPERR_OFPGMFC_GROUP_EXISTS;
5603 /* Insert new group. */
5604 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
5605 hash_int(ofgroup->group_id, 0));
5606 ofproto->n_groups[ofgroup->type]++;
5608 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5613 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5614 ofproto->ofproto_class->group_destruct(ofgroup);
5616 ofputil_bucket_list_destroy(&ofgroup->buckets);
5617 ofproto->ofproto_class->group_dealloc(ofgroup);
5622 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
5625 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
5628 modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5630 struct ofgroup *ofgroup;
5631 struct ofgroup *victim;
5634 if (gm->group_id > OFPG_MAX) {
5635 return OFPERR_OFPGMFC_INVALID_GROUP;
5638 if (gm->type > OFPGT11_FF) {
5639 return OFPERR_OFPGMFC_BAD_TYPE;
5642 victim = ofproto->ofproto_class->group_alloc();
5644 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
5645 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5648 if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) {
5649 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
5652 /* Both group's and its container's write locks held now.
5653 * Also, n_groups[] is protected by ofproto->groups_rwlock. */
5654 if (ofgroup->type != gm->type
5655 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5656 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5661 list_move(&victim->buckets, &ofgroup->buckets);
5663 ofgroup->type = gm->type;
5664 list_move(&ofgroup->buckets, &gm->buckets);
5665 ofgroup->n_buckets = list_size(&ofgroup->buckets);
5667 error = ofproto->ofproto_class->group_modify(ofgroup, victim);
5669 ofputil_bucket_list_destroy(&victim->buckets);
5670 ofproto->n_groups[victim->type]--;
5671 ofproto->n_groups[ofgroup->type]++;
5672 ofgroup->modified = time_msec();
5674 ofputil_bucket_list_destroy(&ofgroup->buckets);
5677 list_move(&ofgroup->buckets, &victim->buckets);
5681 ovs_rwlock_unlock(&ofgroup->rwlock);
5682 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5684 ofproto->ofproto_class->group_dealloc(victim);
5689 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
5690 OVS_RELEASES(ofproto->groups_rwlock)
5693 struct ofputil_flow_mod fm;
5695 /* Delete all flow entries containing this group in a group action */
5696 match_init_catchall(&match);
5697 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
5698 fm.out_group = ofgroup->group_id;
5699 handle_flow_mod__(ofproto, NULL, &fm, NULL);
5701 /* Must wait until existing readers are done,
5702 * while holding the container's write lock at the same time. */
5703 ovs_rwlock_wrlock(&ofgroup->rwlock);
5704 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
5705 /* No-one can find this group any more. */
5706 ofproto->n_groups[ofgroup->type]--;
5707 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5709 ofproto->ofproto_class->group_destruct(ofgroup);
5710 ofputil_bucket_list_destroy(&ofgroup->buckets);
5711 ovs_rwlock_unlock(&ofgroup->rwlock);
5712 ovs_rwlock_destroy(&ofgroup->rwlock);
5713 ofproto->ofproto_class->group_dealloc(ofgroup);
5716 /* Implements OFPGC_DELETE. */
5718 delete_group(struct ofproto *ofproto, uint32_t group_id)
5720 struct ofgroup *ofgroup;
5722 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5723 if (group_id == OFPG_ALL) {
5725 struct hmap_node *node = hmap_first(&ofproto->groups);
5729 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
5730 delete_group__(ofproto, ofgroup);
5731 /* Lock for each node separately, so that we will not jam the
5732 * other threads for too long time. */
5733 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5736 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
5737 hash_int(group_id, 0), &ofproto->groups) {
5738 if (ofgroup->group_id == group_id) {
5739 delete_group__(ofproto, ofgroup);
5744 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5748 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5750 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5751 struct ofputil_group_mod gm;
5754 error = reject_slave_controller(ofconn);
5759 error = ofputil_decode_group_mod(oh, &gm);
5764 switch (gm.command) {
5766 return add_group(ofproto, &gm);
5768 case OFPGC11_MODIFY:
5769 return modify_group(ofproto, &gm);
5771 case OFPGC11_DELETE:
5772 delete_group(ofproto, gm.group_id);
5776 if (gm.command > OFPGC11_DELETE) {
5777 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
5778 ofproto->name, gm.command);
5780 return OFPERR_OFPGMFC_BAD_COMMAND;
5785 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
5787 /* XXX Reject all configurations because none are currently supported */
5788 return OFPERR_OFPTMFC_BAD_CONFIG;
5790 if (tm->table_id == OFPTT_ALL) {
5792 for (i = 0; i < ofproto->n_tables; i++) {
5793 atomic_store(&ofproto->tables[i].config,
5794 (unsigned int)tm->config);
5796 } else if (!check_table_id(ofproto, tm->table_id)) {
5797 return OFPERR_OFPTMFC_BAD_TABLE;
5799 atomic_store(&ofproto->tables[tm->table_id].config,
5800 (unsigned int)tm->config);
5807 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5809 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5810 struct ofputil_table_mod tm;
5813 error = reject_slave_controller(ofconn);
5818 error = ofputil_decode_table_mod(oh, &tm);
5823 return table_mod(ofproto, &tm);
5827 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
5828 OVS_EXCLUDED(ofproto_mutex)
5830 const struct ofp_header *oh = msg->data;
5834 error = ofptype_decode(&type, oh);
5838 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
5839 && ofpmp_more(oh)) {
5840 /* We have no buffer implementation for multipart requests.
5841 * Report overflow for requests which consists of multiple
5843 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
5847 /* OpenFlow requests. */
5848 case OFPTYPE_ECHO_REQUEST:
5849 return handle_echo_request(ofconn, oh);
5851 case OFPTYPE_FEATURES_REQUEST:
5852 return handle_features_request(ofconn, oh);
5854 case OFPTYPE_GET_CONFIG_REQUEST:
5855 return handle_get_config_request(ofconn, oh);
5857 case OFPTYPE_SET_CONFIG:
5858 return handle_set_config(ofconn, oh);
5860 case OFPTYPE_PACKET_OUT:
5861 return handle_packet_out(ofconn, oh);
5863 case OFPTYPE_PORT_MOD:
5864 return handle_port_mod(ofconn, oh);
5866 case OFPTYPE_FLOW_MOD:
5867 return handle_flow_mod(ofconn, oh);
5869 case OFPTYPE_GROUP_MOD:
5870 return handle_group_mod(ofconn, oh);
5872 case OFPTYPE_TABLE_MOD:
5873 return handle_table_mod(ofconn, oh);
5875 case OFPTYPE_METER_MOD:
5876 return handle_meter_mod(ofconn, oh);
5878 case OFPTYPE_BARRIER_REQUEST:
5879 return handle_barrier_request(ofconn, oh);
5881 case OFPTYPE_ROLE_REQUEST:
5882 return handle_role_request(ofconn, oh);
5884 /* OpenFlow replies. */
5885 case OFPTYPE_ECHO_REPLY:
5888 /* Nicira extension requests. */
5889 case OFPTYPE_FLOW_MOD_TABLE_ID:
5890 return handle_nxt_flow_mod_table_id(ofconn, oh);
5892 case OFPTYPE_SET_FLOW_FORMAT:
5893 return handle_nxt_set_flow_format(ofconn, oh);
5895 case OFPTYPE_SET_PACKET_IN_FORMAT:
5896 return handle_nxt_set_packet_in_format(ofconn, oh);
5898 case OFPTYPE_SET_CONTROLLER_ID:
5899 return handle_nxt_set_controller_id(ofconn, oh);
5901 case OFPTYPE_FLOW_AGE:
5902 /* Nothing to do. */
5905 case OFPTYPE_FLOW_MONITOR_CANCEL:
5906 return handle_flow_monitor_cancel(ofconn, oh);
5908 case OFPTYPE_SET_ASYNC_CONFIG:
5909 return handle_nxt_set_async_config(ofconn, oh);
5911 case OFPTYPE_GET_ASYNC_REQUEST:
5912 return handle_nxt_get_async_request(ofconn, oh);
5914 /* Statistics requests. */
5915 case OFPTYPE_DESC_STATS_REQUEST:
5916 return handle_desc_stats_request(ofconn, oh);
5918 case OFPTYPE_FLOW_STATS_REQUEST:
5919 return handle_flow_stats_request(ofconn, oh);
5921 case OFPTYPE_AGGREGATE_STATS_REQUEST:
5922 return handle_aggregate_stats_request(ofconn, oh);
5924 case OFPTYPE_TABLE_STATS_REQUEST:
5925 return handle_table_stats_request(ofconn, oh);
5927 case OFPTYPE_PORT_STATS_REQUEST:
5928 return handle_port_stats_request(ofconn, oh);
5930 case OFPTYPE_QUEUE_STATS_REQUEST:
5931 return handle_queue_stats_request(ofconn, oh);
5933 case OFPTYPE_PORT_DESC_STATS_REQUEST:
5934 return handle_port_desc_stats_request(ofconn, oh);
5936 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
5937 return handle_flow_monitor_request(ofconn, oh);
5939 case OFPTYPE_METER_STATS_REQUEST:
5940 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
5941 return handle_meter_request(ofconn, oh, type);
5943 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
5944 return handle_meter_features_request(ofconn, oh);
5946 case OFPTYPE_GROUP_STATS_REQUEST:
5947 return handle_group_stats_request(ofconn, oh);
5949 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
5950 return handle_group_desc_stats_request(ofconn, oh);
5952 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
5953 return handle_group_features_stats_request(ofconn, oh);
5955 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
5956 return handle_queue_get_config_request(ofconn, oh);
5960 case OFPTYPE_FEATURES_REPLY:
5961 case OFPTYPE_GET_CONFIG_REPLY:
5962 case OFPTYPE_PACKET_IN:
5963 case OFPTYPE_FLOW_REMOVED:
5964 case OFPTYPE_PORT_STATUS:
5965 case OFPTYPE_BARRIER_REPLY:
5966 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
5967 case OFPTYPE_DESC_STATS_REPLY:
5968 case OFPTYPE_FLOW_STATS_REPLY:
5969 case OFPTYPE_QUEUE_STATS_REPLY:
5970 case OFPTYPE_PORT_STATS_REPLY:
5971 case OFPTYPE_TABLE_STATS_REPLY:
5972 case OFPTYPE_AGGREGATE_STATS_REPLY:
5973 case OFPTYPE_PORT_DESC_STATS_REPLY:
5974 case OFPTYPE_ROLE_REPLY:
5975 case OFPTYPE_FLOW_MONITOR_PAUSED:
5976 case OFPTYPE_FLOW_MONITOR_RESUMED:
5977 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
5978 case OFPTYPE_GET_ASYNC_REPLY:
5979 case OFPTYPE_GROUP_STATS_REPLY:
5980 case OFPTYPE_GROUP_DESC_STATS_REPLY:
5981 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
5982 case OFPTYPE_METER_STATS_REPLY:
5983 case OFPTYPE_METER_CONFIG_STATS_REPLY:
5984 case OFPTYPE_METER_FEATURES_STATS_REPLY:
5985 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
5986 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
5987 case OFPTYPE_ROLE_STATUS:
5989 if (ofpmsg_is_stat_request(oh)) {
5990 return OFPERR_OFPBRC_BAD_STAT;
5992 return OFPERR_OFPBRC_BAD_TYPE;
5998 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
5999 OVS_EXCLUDED(ofproto_mutex)
6001 int error = handle_openflow__(ofconn, ofp_msg);
6002 if (error && error != OFPROTO_POSTPONE) {
6003 ofconn_send_error(ofconn, ofp_msg->data, error);
6005 COVERAGE_INC(ofproto_recv_openflow);
6006 return error != OFPROTO_POSTPONE;
6009 /* Asynchronous operations. */
6011 /* Creates and returns a new ofopgroup that is not associated with any
6012 * OpenFlow connection.
6014 * The caller should add operations to the returned group with
6015 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6016 static struct ofopgroup *
6017 ofopgroup_create_unattached(struct ofproto *ofproto)
6018 OVS_REQUIRES(ofproto_mutex)
6020 struct ofopgroup *group = xzalloc(sizeof *group);
6021 group->ofproto = ofproto;
6022 list_init(&group->ofproto_node);
6023 list_init(&group->ops);
6024 list_init(&group->ofconn_node);
6028 /* Creates and returns a new ofopgroup for 'ofproto'.
6030 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
6031 * connection. The 'request' and 'buffer_id' arguments are ignored.
6033 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
6034 * If the ofopgroup eventually fails, then the error reply will include
6035 * 'request'. If the ofopgroup eventually succeeds, then the packet with
6036 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
6038 * The caller should add operations to the returned group with
6039 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6040 static struct ofopgroup *
6041 ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn,
6042 const struct ofp_header *request, uint32_t buffer_id)
6043 OVS_REQUIRES(ofproto_mutex)
6045 struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
6047 size_t request_len = ntohs(request->length);
6049 ovs_assert(ofconn_get_ofproto(ofconn) == ofproto);
6051 ofconn_add_opgroup(ofconn, &group->ofconn_node);
6052 group->ofconn = ofconn;
6053 group->request = xmemdup(request, MIN(request_len, 64));
6054 group->buffer_id = buffer_id;
6059 /* Submits 'group' for processing.
6061 * If 'group' contains no operations (e.g. none were ever added, or all of the
6062 * ones that were added completed synchronously), then it is destroyed
6063 * immediately. Otherwise it is added to the ofproto's list of pending
6066 ofopgroup_submit(struct ofopgroup *group)
6067 OVS_REQUIRES(ofproto_mutex)
6069 if (!group->n_running) {
6070 ofopgroup_complete(group);
6072 list_push_back(&group->ofproto->pending, &group->ofproto_node);
6073 group->ofproto->n_pending++;
6078 ofopgroup_complete(struct ofopgroup *group)
6079 OVS_REQUIRES(ofproto_mutex)
6081 struct ofproto *ofproto = group->ofproto;
6083 struct ofconn *abbrev_ofconn;
6084 ovs_be32 abbrev_xid;
6086 struct ofoperation *op, *next_op;
6089 ovs_assert(!group->n_running);
6092 LIST_FOR_EACH (op, group_node, &group->ops) {
6099 if (!error && group->ofconn && group->buffer_id != UINT32_MAX) {
6100 LIST_FOR_EACH (op, group_node, &group->ops) {
6101 if (op->type != OFOPERATION_DELETE) {
6102 struct ofpbuf *packet;
6105 error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id,
6108 struct rule_execute *re;
6112 ofproto_rule_ref(op->rule);
6114 re = xmalloc(sizeof *re);
6115 re->rule = op->rule;
6116 re->in_port = in_port;
6117 re->packet = packet;
6119 if (!guarded_list_push_back(&ofproto->rule_executes,
6120 &re->list_node, 1024)) {
6121 ofproto_rule_unref(op->rule);
6122 ofpbuf_delete(re->packet);
6131 if (!error && !list_is_empty(&group->ofconn_node)) {
6132 abbrev_ofconn = group->ofconn;
6133 abbrev_xid = group->request->xid;
6135 abbrev_ofconn = NULL;
6136 abbrev_xid = htonl(0);
6138 LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) {
6139 struct rule *rule = op->rule;
6141 /* We generally want to report the change to active OpenFlow flow
6142 monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions:
6144 - The operation failed.
6146 - The affected rule is not visible to controllers.
6148 - The operation's only effect was to update rule->modified. */
6150 || ofproto_rule_is_hidden(rule)
6151 || (op->type == OFOPERATION_MODIFY
6153 && rule->flow_cookie == op->flow_cookie))) {
6154 /* Check that we can just cast from ofoperation_type to
6155 * nx_flow_update_event. */
6156 enum nx_flow_update_event event_type;
6159 case OFOPERATION_ADD:
6160 case OFOPERATION_REPLACE:
6161 event_type = NXFME_ADDED;
6164 case OFOPERATION_DELETE:
6165 event_type = NXFME_DELETED;
6168 case OFOPERATION_MODIFY:
6169 event_type = NXFME_MODIFIED;
6176 ofmonitor_report(ofproto->connmgr, rule, event_type,
6177 op->reason, abbrev_ofconn, abbrev_xid);
6180 rule->pending = NULL;
6183 case OFOPERATION_ADD:
6187 vid_mask = minimask_get_vid_mask(&rule->cr.match.mask);
6188 if (vid_mask == VLAN_VID_MASK) {
6189 if (ofproto->vlan_bitmap) {
6190 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
6191 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
6192 bitmap_set1(ofproto->vlan_bitmap, vid);
6193 ofproto->vlans_changed = true;
6196 ofproto->vlans_changed = true;
6200 oftable_remove_rule(rule);
6201 ofproto_rule_unref(rule);
6205 case OFOPERATION_DELETE:
6206 ovs_assert(!op->error);
6207 ofproto_rule_unref(rule);
6211 case OFOPERATION_MODIFY:
6212 case OFOPERATION_REPLACE:
6214 long long int now = time_msec();
6216 rule->modified = now;
6217 if (op->type == OFOPERATION_REPLACE) {
6218 rule->created = rule->used = now;
6221 ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie);
6222 ovs_mutex_lock(&rule->mutex);
6223 rule->idle_timeout = op->idle_timeout;
6224 rule->hard_timeout = op->hard_timeout;
6225 ovs_mutex_unlock(&rule->mutex);
6227 struct rule_actions *old_actions;
6229 ovs_mutex_lock(&rule->mutex);
6230 old_actions = rule->actions;
6231 rule->actions = op->actions;
6232 ovs_mutex_unlock(&rule->mutex);
6235 rule_actions_unref(old_actions);
6237 rule->flags = op->flags;
6245 ofoperation_destroy(op);
6248 ofmonitor_flush(ofproto->connmgr);
6250 if (!list_is_empty(&group->ofproto_node)) {
6251 ovs_assert(ofproto->n_pending > 0);
6252 ofproto->n_pending--;
6253 list_remove(&group->ofproto_node);
6255 if (!list_is_empty(&group->ofconn_node)) {
6256 list_remove(&group->ofconn_node);
6258 ofconn_send_error(group->ofconn, group->request, error);
6260 connmgr_retry(ofproto->connmgr);
6262 free(group->request);
6266 /* Initiates a new operation on 'rule', of the specified 'type', within
6267 * 'group'. Prior to calling, 'rule' must not have any pending operation.
6269 * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that
6270 * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0).
6272 * Returns the newly created ofoperation (which is also available as
6273 * rule->pending). */
6274 static struct ofoperation *
6275 ofoperation_create(struct ofopgroup *group, struct rule *rule,
6276 enum ofoperation_type type,
6277 enum ofp_flow_removed_reason reason)
6278 OVS_REQUIRES(ofproto_mutex)
6280 struct ofproto *ofproto = group->ofproto;
6281 struct ofoperation *op;
6283 ovs_assert(!rule->pending);
6285 op = rule->pending = xzalloc(sizeof *op);
6287 list_push_back(&group->ops, &op->group_node);
6290 op->reason = reason;
6291 op->flow_cookie = rule->flow_cookie;
6292 ovs_mutex_lock(&rule->mutex);
6293 op->idle_timeout = rule->idle_timeout;
6294 op->hard_timeout = rule->hard_timeout;
6295 ovs_mutex_unlock(&rule->mutex);
6296 op->flags = rule->flags;
6300 if (type == OFOPERATION_DELETE) {
6301 hmap_insert(&ofproto->deletions, &op->hmap_node,
6302 cls_rule_hash(&rule->cr, rule->table_id));
6309 ofoperation_destroy(struct ofoperation *op)
6310 OVS_REQUIRES(ofproto_mutex)
6312 struct ofopgroup *group = op->group;
6315 op->rule->pending = NULL;
6317 if (op->type == OFOPERATION_DELETE) {
6318 hmap_remove(&group->ofproto->deletions, &op->hmap_node);
6320 list_remove(&op->group_node);
6321 rule_actions_unref(op->actions);
6325 /* Indicates that 'op' completed with status 'error', which is either 0 to
6326 * indicate success or an OpenFlow error code on failure.
6328 * If 'error' is 0, indicating success, the operation will be committed
6329 * permanently to the flow table.
6331 * If 'error' is nonzero, then generally the operation will be rolled back:
6333 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
6334 * restores the original rule. The caller must have uninitialized any
6335 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
6336 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
6337 * and 7 for the new rule, calling its ->rule_dealloc() function.
6339 * - If 'op' is a "modify flow" operation, ofproto restores the original
6342 * - 'op' must not be a "delete flow" operation. Removing a rule is not
6343 * allowed to fail. It must always succeed.
6345 * Please see the large comment in ofproto/ofproto-provider.h titled
6346 * "Asynchronous Operation Support" for more information. */
6348 ofoperation_complete(struct ofoperation *op, enum ofperr error)
6350 struct ofopgroup *group = op->group;
6352 ovs_assert(group->n_running > 0);
6353 ovs_assert(!error || op->type != OFOPERATION_DELETE);
6356 if (!--group->n_running && !list_is_empty(&group->ofproto_node)) {
6357 /* This function can be called from ->rule_construct(), in which case
6358 * ofproto_mutex is held, or it can be called from ->run(), in which
6359 * case ofproto_mutex is not held. But only in the latter case can we
6360 * arrive here, so we can safely take ofproto_mutex now. */
6361 ovs_mutex_lock(&ofproto_mutex);
6362 ovs_assert(op->rule->pending == op);
6363 ofopgroup_complete(group);
6364 ovs_mutex_unlock(&ofproto_mutex);
6369 pick_datapath_id(const struct ofproto *ofproto)
6371 const struct ofport *port;
6373 port = ofproto_get_port(ofproto, OFPP_LOCAL);
6375 uint8_t ea[ETH_ADDR_LEN];
6378 error = netdev_get_etheraddr(port->netdev, ea);
6380 return eth_addr_to_uint64(ea);
6382 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6383 ofproto->name, netdev_get_name(port->netdev),
6384 ovs_strerror(error));
6386 return ofproto->fallback_dpid;
6390 pick_fallback_dpid(void)
6392 uint8_t ea[ETH_ADDR_LEN];
6393 eth_addr_nicira_random(ea);
6394 return eth_addr_to_uint64(ea);
6397 /* Table overflow policy. */
6399 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6400 * to NULL if the table is not configured to evict rules or if the table
6401 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6402 * or with no timeouts are not evictable.) */
6404 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
6405 OVS_REQUIRES(ofproto_mutex)
6407 struct eviction_group *evg;
6410 if (!table->eviction_fields) {
6414 /* In the common case, the outer and inner loops here will each be entered
6417 * - The inner loop normally "return"s in its first iteration. If the
6418 * eviction group has any evictable rules, then it always returns in
6421 * - The outer loop only iterates more than once if the largest eviction
6422 * group has no evictable rules.
6424 * - The outer loop can exit only if table's 'max_flows' is all filled up
6425 * by unevictable rules. */
6426 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
6429 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
6438 /* Searches 'ofproto' for tables that have more flows than their configured
6439 * maximum and that have flow eviction enabled, and evicts as many flows as
6440 * necessary and currently feasible from them.
6442 * This triggers only when an OpenFlow table has N flows in it and then the
6443 * client configures a maximum number of flows less than N. */
6445 ofproto_evict(struct ofproto *ofproto)
6447 struct oftable *table;
6449 ovs_mutex_lock(&ofproto_mutex);
6450 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
6451 evict_rules_from_table(ofproto, table, 0);
6453 ovs_mutex_unlock(&ofproto_mutex);
6456 /* Eviction groups. */
6458 /* Returns the priority to use for an eviction_group that contains 'n_rules'
6459 * rules. The priority contains low-order random bits to ensure that eviction
6460 * groups with the same number of rules are prioritized randomly. */
6462 eviction_group_priority(size_t n_rules)
6464 uint16_t size = MIN(UINT16_MAX, n_rules);
6465 return (size << 16) | random_uint16();
6468 /* Updates 'evg', an eviction_group within 'table', following a change that
6469 * adds or removes rules in 'evg'. */
6471 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
6472 OVS_REQUIRES(ofproto_mutex)
6474 heap_change(&table->eviction_groups_by_size, &evg->size_node,
6475 eviction_group_priority(heap_count(&evg->rules)));
6478 /* Destroys 'evg', an eviction_group within 'table':
6480 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
6481 * rules themselves, just removes them from the eviction group.)
6483 * - Removes 'evg' from 'table'.
6487 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
6488 OVS_REQUIRES(ofproto_mutex)
6490 while (!heap_is_empty(&evg->rules)) {
6493 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
6494 rule->eviction_group = NULL;
6496 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
6497 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
6498 heap_destroy(&evg->rules);
6502 /* Removes 'rule' from its eviction group, if any. */
6504 eviction_group_remove_rule(struct rule *rule)
6505 OVS_REQUIRES(ofproto_mutex)
6507 if (rule->eviction_group) {
6508 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6509 struct eviction_group *evg = rule->eviction_group;
6511 rule->eviction_group = NULL;
6512 heap_remove(&evg->rules, &rule->evg_node);
6513 if (heap_is_empty(&evg->rules)) {
6514 eviction_group_destroy(table, evg);
6516 eviction_group_resized(table, evg);
6521 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
6522 * returns the hash value. */
6524 eviction_group_hash_rule(struct rule *rule)
6525 OVS_REQUIRES(ofproto_mutex)
6527 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6528 const struct mf_subfield *sf;
6532 hash = table->eviction_group_id_basis;
6533 miniflow_expand(&rule->cr.match.flow, &flow);
6534 for (sf = table->eviction_fields;
6535 sf < &table->eviction_fields[table->n_eviction_fields];
6538 if (mf_are_prereqs_ok(sf->field, &flow)) {
6539 union mf_value value;
6541 mf_get_value(sf->field, &flow, &value);
6543 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
6545 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
6546 unsigned int start = sf->ofs + sf->n_bits;
6547 bitwise_zero(&value, sf->field->n_bytes, start,
6548 sf->field->n_bytes * 8 - start);
6550 hash = hash_bytes(&value, sf->field->n_bytes, hash);
6552 hash = hash_int(hash, 0);
6559 /* Returns an eviction group within 'table' with the given 'id', creating one
6561 static struct eviction_group *
6562 eviction_group_find(struct oftable *table, uint32_t id)
6563 OVS_REQUIRES(ofproto_mutex)
6565 struct eviction_group *evg;
6567 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
6571 evg = xmalloc(sizeof *evg);
6572 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
6573 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
6574 eviction_group_priority(0));
6575 heap_init(&evg->rules);
6580 /* Returns an eviction priority for 'rule'. The return value should be
6581 * interpreted so that higher priorities make a rule more attractive candidates
6584 rule_eviction_priority(struct rule *rule)
6585 OVS_REQUIRES(ofproto_mutex)
6587 long long int hard_expiration;
6588 long long int idle_expiration;
6589 long long int expiration;
6590 uint32_t expiration_offset;
6592 /* Calculate time of expiration. */
6593 ovs_mutex_lock(&rule->mutex);
6594 hard_expiration = (rule->hard_timeout
6595 ? rule->modified + rule->hard_timeout * 1000
6597 idle_expiration = (rule->idle_timeout
6598 ? rule->used + rule->idle_timeout * 1000
6600 expiration = MIN(hard_expiration, idle_expiration);
6601 ovs_mutex_unlock(&rule->mutex);
6602 if (expiration == LLONG_MAX) {
6606 /* Calculate the time of expiration as a number of (approximate) seconds
6607 * after program startup.
6609 * This should work OK for program runs that last UINT32_MAX seconds or
6610 * less. Therefore, please restart OVS at least once every 136 years. */
6611 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
6613 /* Invert the expiration offset because we're using a max-heap. */
6614 return UINT32_MAX - expiration_offset;
6617 /* Adds 'rule' to an appropriate eviction group for its oftable's
6618 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
6619 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
6622 * The caller must ensure that 'rule' is not already in an eviction group. */
6624 eviction_group_add_rule(struct rule *rule)
6625 OVS_REQUIRES(ofproto_mutex)
6627 struct ofproto *ofproto = rule->ofproto;
6628 struct oftable *table = &ofproto->tables[rule->table_id];
6631 ovs_mutex_lock(&rule->mutex);
6632 has_timeout = rule->hard_timeout || rule->idle_timeout;
6633 ovs_mutex_unlock(&rule->mutex);
6635 if (table->eviction_fields && has_timeout) {
6636 struct eviction_group *evg;
6638 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
6640 rule->eviction_group = evg;
6641 heap_insert(&evg->rules, &rule->evg_node,
6642 rule_eviction_priority(rule));
6643 eviction_group_resized(table, evg);
6649 /* Initializes 'table'. */
6651 oftable_init(struct oftable *table)
6653 memset(table, 0, sizeof *table);
6654 classifier_init(&table->cls, flow_segment_u32s);
6655 table->max_flows = UINT_MAX;
6656 atomic_init(&table->config, (unsigned int)OFPTC11_TABLE_MISS_CONTROLLER);
6659 /* Destroys 'table', including its classifier and eviction groups.
6661 * The caller is responsible for freeing 'table' itself. */
6663 oftable_destroy(struct oftable *table)
6665 ovs_rwlock_rdlock(&table->cls.rwlock);
6666 ovs_assert(classifier_is_empty(&table->cls));
6667 ovs_rwlock_unlock(&table->cls.rwlock);
6668 oftable_disable_eviction(table);
6669 classifier_destroy(&table->cls);
6673 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
6674 * string, then 'table' will use its default name.
6676 * This only affects the name exposed for a table exposed through the OpenFlow
6677 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
6679 oftable_set_name(struct oftable *table, const char *name)
6681 if (name && name[0]) {
6682 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
6683 if (!table->name || strncmp(name, table->name, len)) {
6685 table->name = xmemdup0(name, len);
6693 /* oftables support a choice of two policies when adding a rule would cause the
6694 * number of flows in the table to exceed the configured maximum number: either
6695 * they can refuse to add the new flow or they can evict some existing flow.
6696 * This function configures the former policy on 'table'. */
6698 oftable_disable_eviction(struct oftable *table)
6699 OVS_REQUIRES(ofproto_mutex)
6701 if (table->eviction_fields) {
6702 struct eviction_group *evg, *next;
6704 HMAP_FOR_EACH_SAFE (evg, next, id_node,
6705 &table->eviction_groups_by_id) {
6706 eviction_group_destroy(table, evg);
6708 hmap_destroy(&table->eviction_groups_by_id);
6709 heap_destroy(&table->eviction_groups_by_size);
6711 free(table->eviction_fields);
6712 table->eviction_fields = NULL;
6713 table->n_eviction_fields = 0;
6717 /* oftables support a choice of two policies when adding a rule would cause the
6718 * number of flows in the table to exceed the configured maximum number: either
6719 * they can refuse to add the new flow or they can evict some existing flow.
6720 * This function configures the latter policy on 'table', with fairness based
6721 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
6722 * 'n_fields' as 0 disables fairness.) */
6724 oftable_enable_eviction(struct oftable *table,
6725 const struct mf_subfield *fields, size_t n_fields)
6726 OVS_REQUIRES(ofproto_mutex)
6728 struct cls_cursor cursor;
6731 if (table->eviction_fields
6732 && n_fields == table->n_eviction_fields
6734 || !memcmp(fields, table->eviction_fields,
6735 n_fields * sizeof *fields))) {
6740 oftable_disable_eviction(table);
6742 table->n_eviction_fields = n_fields;
6743 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
6745 table->eviction_group_id_basis = random_uint32();
6746 hmap_init(&table->eviction_groups_by_id);
6747 heap_init(&table->eviction_groups_by_size);
6749 ovs_rwlock_rdlock(&table->cls.rwlock);
6750 cls_cursor_init(&cursor, &table->cls, NULL);
6751 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
6752 eviction_group_add_rule(rule);
6754 ovs_rwlock_unlock(&table->cls.rwlock);
6757 /* Removes 'rule' from the oftable that contains it. */
6759 oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule)
6760 OVS_REQUIRES(ofproto_mutex)
6762 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
6764 ovs_rwlock_wrlock(&cls->rwlock);
6765 classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr));
6766 ovs_rwlock_unlock(&cls->rwlock);
6768 cookies_remove(ofproto, rule);
6770 eviction_group_remove_rule(rule);
6771 if (!list_is_empty(&rule->expirable)) {
6772 list_remove(&rule->expirable);
6774 if (!list_is_empty(&rule->meter_list_node)) {
6775 list_remove(&rule->meter_list_node);
6776 list_init(&rule->meter_list_node);
6781 oftable_remove_rule(struct rule *rule)
6782 OVS_REQUIRES(ofproto_mutex)
6784 oftable_remove_rule__(rule->ofproto, rule);
6787 /* Inserts 'rule' into its oftable, which must not already contain any rule for
6788 * the same cls_rule. */
6790 oftable_insert_rule(struct rule *rule)
6791 OVS_REQUIRES(ofproto_mutex)
6793 struct ofproto *ofproto = rule->ofproto;
6794 struct oftable *table = &ofproto->tables[rule->table_id];
6797 ovs_mutex_lock(&rule->mutex);
6798 may_expire = rule->hard_timeout || rule->idle_timeout;
6799 ovs_mutex_unlock(&rule->mutex);
6802 list_insert(&ofproto->expirable, &rule->expirable);
6805 cookies_insert(ofproto, rule);
6807 if (rule->actions->provider_meter_id != UINT32_MAX) {
6808 uint32_t meter_id = ofpacts_get_meter(rule->actions->ofpacts,
6809 rule->actions->ofpacts_len);
6810 struct meter *meter = ofproto->meters[meter_id];
6811 list_insert(&meter->rules, &rule->meter_list_node);
6813 ovs_rwlock_wrlock(&table->cls.rwlock);
6814 classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr));
6815 ovs_rwlock_unlock(&table->cls.rwlock);
6816 eviction_group_add_rule(rule);
6819 /* unixctl commands. */
6822 ofproto_lookup(const char *name)
6824 struct ofproto *ofproto;
6826 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
6828 if (!strcmp(ofproto->name, name)) {
6836 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
6837 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6839 struct ofproto *ofproto;
6843 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
6844 ds_put_format(&results, "%s\n", ofproto->name);
6846 unixctl_command_reply(conn, ds_cstr(&results));
6847 ds_destroy(&results);
6851 ofproto_unixctl_init(void)
6853 static bool registered;
6859 unixctl_command_register("ofproto/list", "", 0, 0,
6860 ofproto_unixctl_list, NULL);
6863 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6865 * This is deprecated. It is only for compatibility with broken device drivers
6866 * in old versions of Linux that do not properly support VLANs when VLAN
6867 * devices are not used. When broken device drivers are no longer in
6868 * widespread use, we will delete these interfaces. */
6870 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
6871 * (exactly) by an OpenFlow rule in 'ofproto'. */
6873 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
6875 const struct oftable *oftable;
6877 free(ofproto->vlan_bitmap);
6878 ofproto->vlan_bitmap = bitmap_allocate(4096);
6879 ofproto->vlans_changed = false;
6881 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
6882 const struct cls_subtable *table;
6884 ovs_rwlock_rdlock(&oftable->cls.rwlock);
6885 HMAP_FOR_EACH (table, hmap_node, &oftable->cls.subtables) {
6886 if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) {
6887 const struct cls_rule *rule;
6889 HMAP_FOR_EACH (rule, hmap_node, &table->rules) {
6890 uint16_t vid = miniflow_get_vid(&rule->match.flow);
6891 bitmap_set1(vlan_bitmap, vid);
6892 bitmap_set1(ofproto->vlan_bitmap, vid);
6896 ovs_rwlock_unlock(&oftable->cls.rwlock);
6900 /* Returns true if new VLANs have come into use by the flow table since the
6901 * last call to ofproto_get_vlan_usage().
6903 * We don't track when old VLANs stop being used. */
6905 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
6907 return ofproto->vlans_changed;
6910 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
6911 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
6912 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
6913 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
6914 * then the VLAN device is un-enslaved. */
6916 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
6917 ofp_port_t realdev_ofp_port, int vid)
6919 struct ofport *ofport;
6922 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
6924 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
6926 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
6927 ofproto->name, vlandev_ofp_port);
6931 if (!ofproto->ofproto_class->set_realdev) {
6932 if (!vlandev_ofp_port) {
6935 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
6939 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
6941 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
6942 ofproto->name, vlandev_ofp_port,
6943 netdev_get_name(ofport->netdev), ovs_strerror(error));