2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
26 #include "byte-order.h"
27 #include "classifier.h"
28 #include "connectivity.h"
31 #include "dynamic-string.h"
34 #include "meta-flow.h"
37 #include "ofp-actions.h"
38 #include "ofp-errors.h"
40 #include "ofp-print.h"
43 #include "ofproto-provider.h"
44 #include "openflow/nicira-ext.h"
45 #include "openflow/openflow.h"
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(int n_handlers_, int n_revalidators_)
739 int threads = MAX(count_cpu_cores(), 2);
741 n_revalidators = MAX(n_revalidators_, 0);
742 n_handlers = MAX(n_handlers_, 0);
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 fat_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 fat_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 '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 fat_rwlock_rdlock(&table->cls.rwlock);
1267 cls_cursor_init(&cursor, &table->cls, NULL);
1268 fat_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 fat_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 fat_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 fat_rwlock_rdlock(&table->cls.rwlock);
1616 n_rules += classifier_count(&table->cls);
1617 fat_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 fat_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 fat_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 /* Optimize for the most common case of a repeated learn action.
1939 * If an identical flow already exists we only need to update its
1940 * 'modified' time. */
1941 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
1942 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
1943 struct oftable *table = &ofproto->tables[fm->table_id];
1944 struct cls_rule match_rule;
1948 cls_rule_init(&match_rule, &fm->match, fm->priority);
1949 fat_rwlock_rdlock(&table->cls.rwlock);
1950 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls,
1953 /* Reading many of the rule fields and writing on 'modified'
1954 * requires the rule->mutex. Also, rule->actions may change
1955 * if rule->mutex is not held. */
1956 ovs_mutex_lock(&rule->mutex);
1957 if (rule->idle_timeout == fm->idle_timeout
1958 && rule->hard_timeout == fm->hard_timeout
1959 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
1960 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
1961 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
1962 rule->actions->ofpacts,
1963 rule->actions->ofpacts_len)) {
1964 /* Rule already exists and need not change, only update the
1965 modified timestamp. */
1966 rule->modified = time_msec();
1969 ovs_mutex_unlock(&rule->mutex);
1971 fat_rwlock_unlock(&table->cls.rwlock);
1978 return handle_flow_mod__(ofproto, NULL, fm, NULL);
1981 /* Searches for a rule with matching criteria exactly equal to 'target' in
1982 * ofproto's table 0 and, if it finds one, deletes it.
1984 * This is a helper function for in-band control and fail-open. */
1986 ofproto_delete_flow(struct ofproto *ofproto,
1987 const struct match *target, unsigned int priority)
1988 OVS_EXCLUDED(ofproto_mutex)
1990 struct classifier *cls = &ofproto->tables[0].cls;
1993 /* First do a cheap check whether the rule we're looking for has already
1994 * been deleted. If so, then we're done. */
1995 fat_rwlock_rdlock(&cls->rwlock);
1996 rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
1998 fat_rwlock_unlock(&cls->rwlock);
2003 /* Fall back to a executing a full flow mod. We can't optimize this at all
2004 * because we didn't take enough locks above to ensure that the flow table
2005 * didn't already change beneath us. */
2006 return simple_flow_mod(ofproto, target, priority, NULL, 0,
2007 OFPFC_DELETE_STRICT) != OFPROTO_POSTPONE;
2010 /* Starts the process of deleting all of the flows from all of ofproto's flow
2011 * tables and then reintroducing the flows required by in-band control and
2012 * fail-open. The process will complete in a later call to ofproto_run(). */
2014 ofproto_flush_flows(struct ofproto *ofproto)
2016 COVERAGE_INC(ofproto_flush);
2017 ofproto->state = S_FLUSH;
2021 reinit_ports(struct ofproto *p)
2023 struct ofproto_port_dump dump;
2024 struct sset devnames;
2025 struct ofport *ofport;
2026 struct ofproto_port ofproto_port;
2027 const char *devname;
2029 COVERAGE_INC(ofproto_reinit_ports);
2031 sset_init(&devnames);
2032 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2033 sset_add(&devnames, netdev_get_name(ofport->netdev));
2035 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2036 sset_add(&devnames, ofproto_port.name);
2039 SSET_FOR_EACH (devname, &devnames) {
2040 update_port(p, devname);
2042 sset_destroy(&devnames);
2046 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2050 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2051 port_idx = port_idx ? port_idx : UINT16_MAX;
2053 if (port_idx >= ofproto->max_ports
2054 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2055 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2056 long long int last_used_at, lru = LLONG_MAX;
2058 /* Search for a free OpenFlow port number. We try not to
2059 * immediately reuse them to prevent problems due to old
2062 * We limit the automatically assigned port numbers to the lower half
2063 * of the port range, to reserve the upper half for assignment by
2066 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2067 ofproto->alloc_port_no = 1;
2069 last_used_at = ofport_get_usage(ofproto,
2070 u16_to_ofp(ofproto->alloc_port_no));
2071 if (!last_used_at) {
2072 port_idx = ofproto->alloc_port_no;
2074 } else if ( last_used_at < time_msec() - 60*60*1000) {
2075 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2076 * more than an hour ago, consider it usable. */
2077 ofport_remove_usage(ofproto,
2078 u16_to_ofp(ofproto->alloc_port_no));
2079 port_idx = ofproto->alloc_port_no;
2081 } else if (last_used_at < lru) {
2083 lru_ofport = ofproto->alloc_port_no;
2086 if (ofproto->alloc_port_no == end_port_no) {
2088 port_idx = lru_ofport;
2095 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2096 return u16_to_ofp(port_idx);
2100 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2102 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2103 ofport_set_usage(ofproto, ofp_port, time_msec());
2107 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2108 * pointer if the netdev cannot be opened. On success, also fills in
2110 static struct netdev *
2111 ofport_open(struct ofproto *ofproto,
2112 struct ofproto_port *ofproto_port,
2113 struct ofputil_phy_port *pp)
2115 enum netdev_flags flags;
2116 struct netdev *netdev;
2119 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2121 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2122 "cannot be opened (%s)",
2124 ofproto_port->name, ofproto_port->ofp_port,
2125 ofproto_port->name, ovs_strerror(error));
2129 if (ofproto_port->ofp_port == OFPP_NONE) {
2130 if (!strcmp(ofproto->name, ofproto_port->name)) {
2131 ofproto_port->ofp_port = OFPP_LOCAL;
2133 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2134 ofproto_port->name);
2137 pp->port_no = ofproto_port->ofp_port;
2138 netdev_get_etheraddr(netdev, pp->hw_addr);
2139 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2140 netdev_get_flags(netdev, &flags);
2141 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2142 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2143 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2144 &pp->supported, &pp->peer);
2145 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2146 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2151 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2152 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
2155 ofport_equal(const struct ofputil_phy_port *a,
2156 const struct ofputil_phy_port *b)
2158 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2159 && a->state == b->state
2160 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2161 && a->curr == b->curr
2162 && a->advertised == b->advertised
2163 && a->supported == b->supported
2164 && a->peer == b->peer
2165 && a->curr_speed == b->curr_speed
2166 && a->max_speed == b->max_speed);
2169 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2170 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2171 * one with the same name or port number). */
2173 ofport_install(struct ofproto *p,
2174 struct netdev *netdev, const struct ofputil_phy_port *pp)
2176 const char *netdev_name = netdev_get_name(netdev);
2177 struct ofport *ofport;
2180 /* Create ofport. */
2181 ofport = p->ofproto_class->port_alloc();
2186 ofport->ofproto = p;
2187 ofport->netdev = netdev;
2189 ofport->ofp_port = pp->port_no;
2190 ofport->created = time_msec();
2192 /* Add port to 'p'. */
2193 hmap_insert(&p->ports, &ofport->hmap_node,
2194 hash_ofp_port(ofport->ofp_port));
2195 shash_add(&p->port_by_name, netdev_name, ofport);
2197 update_mtu(p, ofport);
2199 /* Let the ofproto_class initialize its private data. */
2200 error = p->ofproto_class->port_construct(ofport);
2204 connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD);
2208 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2209 p->name, netdev_name, ovs_strerror(error));
2211 ofport_destroy__(ofport);
2213 netdev_close(netdev);
2217 /* Removes 'ofport' from 'p' and destroys it. */
2219 ofport_remove(struct ofport *ofport)
2221 connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp,
2223 ofport_destroy(ofport);
2226 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2229 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2231 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2233 ofport_remove(port);
2237 /* Updates 'port' with new 'pp' description.
2239 * Does not handle a name or port number change. The caller must implement
2240 * such a change as a delete followed by an add. */
2242 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2244 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2245 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2246 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2247 port->pp.state = pp->state;
2248 port->pp.curr = pp->curr;
2249 port->pp.advertised = pp->advertised;
2250 port->pp.supported = pp->supported;
2251 port->pp.peer = pp->peer;
2252 port->pp.curr_speed = pp->curr_speed;
2253 port->pp.max_speed = pp->max_speed;
2255 connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY);
2258 /* Update OpenFlow 'state' in 'port' and notify controller. */
2260 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2262 if (port->pp.state != state) {
2263 port->pp.state = state;
2264 connmgr_send_port_status(port->ofproto->connmgr, &port->pp,
2270 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2272 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2274 if (port->ofproto->ofproto_class->set_realdev) {
2275 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2277 if (port->ofproto->ofproto_class->set_stp_port) {
2278 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2280 if (port->ofproto->ofproto_class->set_cfm) {
2281 port->ofproto->ofproto_class->set_cfm(port, NULL);
2283 if (port->ofproto->ofproto_class->bundle_remove) {
2284 port->ofproto->ofproto_class->bundle_remove(port);
2290 ofport_destroy__(struct ofport *port)
2292 struct ofproto *ofproto = port->ofproto;
2293 const char *name = netdev_get_name(port->netdev);
2295 hmap_remove(&ofproto->ports, &port->hmap_node);
2296 shash_delete(&ofproto->port_by_name,
2297 shash_find(&ofproto->port_by_name, name));
2299 netdev_close(port->netdev);
2300 ofproto->ofproto_class->port_dealloc(port);
2304 ofport_destroy(struct ofport *port)
2307 dealloc_ofp_port(port->ofproto, port->ofp_port);
2308 port->ofproto->ofproto_class->port_destruct(port);
2309 ofport_destroy__(port);
2314 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2316 struct ofport *port;
2318 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2320 if (port->ofp_port == ofp_port) {
2327 static long long int
2328 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2330 struct ofport_usage *usage;
2332 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2333 &ofproto->ofport_usage) {
2334 if (usage->ofp_port == ofp_port) {
2335 return usage->last_used;
2342 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2343 long long int last_used)
2345 struct ofport_usage *usage;
2346 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2347 &ofproto->ofport_usage) {
2348 if (usage->ofp_port == ofp_port) {
2349 usage->last_used = last_used;
2353 ovs_assert(last_used == LLONG_MAX);
2355 usage = xmalloc(sizeof *usage);
2356 usage->ofp_port = ofp_port;
2357 usage->last_used = last_used;
2358 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2359 hash_ofp_port(ofp_port));
2363 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2365 struct ofport_usage *usage;
2366 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2367 &ofproto->ofport_usage) {
2368 if (usage->ofp_port == ofp_port) {
2369 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2377 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2379 struct ofproto *ofproto = port->ofproto;
2382 if (ofproto->ofproto_class->port_get_stats) {
2383 error = ofproto->ofproto_class->port_get_stats(port, stats);
2392 update_port(struct ofproto *ofproto, const char *name)
2394 struct ofproto_port ofproto_port;
2395 struct ofputil_phy_port pp;
2396 struct netdev *netdev;
2397 struct ofport *port;
2399 COVERAGE_INC(ofproto_update_port);
2401 /* Fetch 'name''s location and properties from the datapath. */
2402 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2403 ? ofport_open(ofproto, &ofproto_port, &pp)
2407 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2408 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2409 struct netdev *old_netdev = port->netdev;
2411 /* 'name' hasn't changed location. Any properties changed? */
2412 if (!ofport_equal(&port->pp, &pp)) {
2413 ofport_modified(port, &pp);
2416 update_mtu(ofproto, port);
2418 /* Install the newly opened netdev in case it has changed.
2419 * Don't close the old netdev yet in case port_modified has to
2420 * remove a retained reference to it.*/
2421 port->netdev = netdev;
2423 if (port->ofproto->ofproto_class->port_modified) {
2424 port->ofproto->ofproto_class->port_modified(port);
2427 netdev_close(old_netdev);
2429 /* If 'port' is nonnull then its name differs from 'name' and thus
2430 * we should delete it. If we think there's a port named 'name'
2431 * then its port number must be wrong now so delete it too. */
2433 ofport_remove(port);
2435 ofport_remove_with_name(ofproto, name);
2436 ofport_install(ofproto, netdev, &pp);
2439 /* Any port named 'name' is gone now. */
2440 ofport_remove_with_name(ofproto, name);
2442 ofproto_port_destroy(&ofproto_port);
2446 init_ports(struct ofproto *p)
2448 struct ofproto_port_dump dump;
2449 struct ofproto_port ofproto_port;
2450 struct shash_node *node, *next;
2452 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2453 const char *name = ofproto_port.name;
2455 if (shash_find(&p->port_by_name, name)) {
2456 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2459 struct ofputil_phy_port pp;
2460 struct netdev *netdev;
2462 /* Check if an OpenFlow port number had been requested. */
2463 node = shash_find(&init_ofp_ports, name);
2465 const struct iface_hint *iface_hint = node->data;
2466 simap_put(&p->ofp_requests, name,
2467 ofp_to_u16(iface_hint->ofp_port));
2470 netdev = ofport_open(p, &ofproto_port, &pp);
2472 ofport_install(p, netdev, &pp);
2473 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2474 p->alloc_port_no = MAX(p->alloc_port_no,
2475 ofp_to_u16(ofproto_port.ofp_port));
2481 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2482 struct iface_hint *iface_hint = node->data;
2484 if (!strcmp(iface_hint->br_name, p->name)) {
2485 free(iface_hint->br_name);
2486 free(iface_hint->br_type);
2488 shash_delete(&init_ofp_ports, node);
2495 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2496 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2498 find_min_mtu(struct ofproto *p)
2500 struct ofport *ofport;
2503 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2504 struct netdev *netdev = ofport->netdev;
2507 /* Skip any internal ports, since that's what we're trying to
2509 if (!strcmp(netdev_get_type(netdev), "internal")) {
2513 if (netdev_get_mtu(netdev, &dev_mtu)) {
2516 if (!mtu || dev_mtu < mtu) {
2521 return mtu ? mtu: ETH_PAYLOAD_MAX;
2524 /* Update MTU of all datapath devices on 'p' to the minimum of the
2525 * non-datapath ports in event of 'port' added or changed. */
2527 update_mtu(struct ofproto *p, struct ofport *port)
2529 struct ofport *ofport;
2530 struct netdev *netdev = port->netdev;
2531 int dev_mtu, old_min;
2533 if (netdev_get_mtu(netdev, &dev_mtu)) {
2537 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2538 if (dev_mtu > p->min_mtu) {
2539 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2540 dev_mtu = p->min_mtu;
2543 port->mtu = dev_mtu;
2547 /* For non-internal port find new min mtu. */
2548 old_min = p->min_mtu;
2549 port->mtu = dev_mtu;
2550 p->min_mtu = find_min_mtu(p);
2551 if (p->min_mtu == old_min) {
2555 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2556 struct netdev *netdev = ofport->netdev;
2558 if (!strcmp(netdev_get_type(netdev), "internal")) {
2559 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2560 ofport->mtu = p->min_mtu;
2567 ofproto_rule_ref(struct rule *rule)
2570 ovs_refcount_ref(&rule->ref_count);
2575 ofproto_rule_unref(struct rule *rule)
2577 if (rule && ovs_refcount_unref(&rule->ref_count) == 1) {
2578 rule->ofproto->ofproto_class->rule_destruct(rule);
2579 ofproto_rule_destroy__(rule);
2583 struct rule_actions *
2584 rule_get_actions(const struct rule *rule)
2585 OVS_EXCLUDED(rule->mutex)
2587 struct rule_actions *actions;
2589 ovs_mutex_lock(&rule->mutex);
2590 actions = rule_get_actions__(rule);
2591 ovs_mutex_unlock(&rule->mutex);
2596 struct rule_actions *
2597 rule_get_actions__(const struct rule *rule)
2598 OVS_REQUIRES(rule->mutex)
2600 rule_actions_ref(rule->actions);
2601 return rule->actions;
2605 ofproto_rule_destroy__(struct rule *rule)
2606 OVS_NO_THREAD_SAFETY_ANALYSIS
2608 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2609 rule_actions_unref(rule->actions);
2610 ovs_mutex_destroy(&rule->mutex);
2611 ovs_refcount_destroy(&rule->ref_count);
2612 rule->ofproto->ofproto_class->rule_dealloc(rule);
2615 static uint32_t get_provider_meter_id(const struct ofproto *,
2616 uint32_t of_meter_id);
2618 /* Creates and returns a new 'struct rule_actions', with a ref_count of 1,
2619 * whose actions are a copy of from the 'ofpacts_len' bytes of 'ofpacts'. */
2620 struct rule_actions *
2621 rule_actions_create(const struct ofproto *ofproto,
2622 const struct ofpact *ofpacts, size_t ofpacts_len)
2624 struct rule_actions *actions;
2626 actions = xmalloc(sizeof *actions);
2627 ovs_refcount_init(&actions->ref_count);
2628 actions->ofpacts = xmemdup(ofpacts, ofpacts_len);
2629 actions->ofpacts_len = ofpacts_len;
2630 actions->provider_meter_id
2631 = get_provider_meter_id(ofproto,
2632 ofpacts_get_meter(ofpacts, ofpacts_len));
2637 /* Increments 'actions''s ref_count. */
2639 rule_actions_ref(struct rule_actions *actions)
2642 ovs_refcount_ref(&actions->ref_count);
2646 /* Decrements 'actions''s ref_count and frees 'actions' if the ref_count
2649 rule_actions_unref(struct rule_actions *actions)
2651 if (actions && ovs_refcount_unref(&actions->ref_count) == 1) {
2652 ovs_refcount_destroy(&actions->ref_count);
2653 free(actions->ofpacts);
2658 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2659 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2661 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2662 OVS_REQUIRES(ofproto_mutex)
2664 return (port == OFPP_ANY
2665 || ofpacts_output_to_port(rule->actions->ofpacts,
2666 rule->actions->ofpacts_len, port));
2669 /* Returns true if 'rule' has group and equals group_id. */
2671 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2672 OVS_REQUIRES(ofproto_mutex)
2674 return (group_id == OFPG11_ANY
2675 || ofpacts_output_to_group(rule->actions->ofpacts,
2676 rule->actions->ofpacts_len, group_id));
2679 /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
2680 * OFPAT_ENQUEUE action that outputs to 'out_port'. */
2682 ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port)
2683 OVS_REQUIRES(ofproto_mutex)
2685 if (ofproto_rule_has_out_port(op->rule, out_port)) {
2690 case OFOPERATION_ADD:
2691 case OFOPERATION_DELETE:
2694 case OFOPERATION_MODIFY:
2695 case OFOPERATION_REPLACE:
2696 return ofpacts_output_to_port(op->actions->ofpacts,
2697 op->actions->ofpacts_len, out_port);
2704 rule_execute_destroy(struct rule_execute *e)
2706 ofproto_rule_unref(e->rule);
2707 list_remove(&e->list_node);
2711 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2712 * by passing them to the ofproto provider. */
2714 run_rule_executes(struct ofproto *ofproto)
2715 OVS_EXCLUDED(ofproto_mutex)
2717 struct rule_execute *e, *next;
2718 struct list executes;
2720 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2721 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2722 union flow_in_port in_port_;
2725 in_port_.ofp_port = e->in_port;
2726 flow_extract(e->packet, 0, 0, NULL, &in_port_, &flow);
2727 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2729 rule_execute_destroy(e);
2733 /* Destroys and discards all "rule_execute" operations queued up in
2734 * ofproto->rule_executes. */
2736 destroy_rule_executes(struct ofproto *ofproto)
2738 struct rule_execute *e, *next;
2739 struct list executes;
2741 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2742 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2743 ofpbuf_delete(e->packet);
2744 rule_execute_destroy(e);
2748 /* Returns true if 'rule' should be hidden from the controller.
2750 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
2751 * (e.g. by in-band control) and are intentionally hidden from the
2754 ofproto_rule_is_hidden(const struct rule *rule)
2756 return rule->cr.priority > UINT16_MAX;
2759 static enum oftable_flags
2760 rule_get_flags(const struct rule *rule)
2762 return rule->ofproto->tables[rule->table_id].flags;
2766 rule_is_modifiable(const struct rule *rule)
2768 return !(rule_get_flags(rule) & OFTABLE_READONLY);
2772 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
2774 ofconn_send_reply(ofconn, make_echo_reply(oh));
2779 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
2781 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2782 struct ofputil_switch_features features;
2783 struct ofport *port;
2789 ofproto->ofproto_class->get_features(ofproto, &arp_match_ip,
2791 ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */
2793 /* Count only non-hidden tables in the number of tables. (Hidden tables,
2794 * if present, are always at the end.) */
2795 n_tables = ofproto->n_tables;
2796 for (i = 0; i < ofproto->n_tables; i++) {
2797 if (ofproto->tables[i].flags & OFTABLE_HIDDEN) {
2803 features.datapath_id = ofproto->datapath_id;
2804 features.n_buffers = pktbuf_capacity();
2805 features.n_tables = n_tables;
2806 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
2807 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS);
2809 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
2811 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
2812 features.auxiliary_id = 0;
2813 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
2815 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
2816 ofputil_put_switch_features_port(&port->pp, b);
2819 ofconn_send_reply(ofconn, b);
2824 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
2826 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2827 struct ofp_switch_config *osc;
2828 enum ofp_config_flags flags;
2832 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
2833 osc = ofpbuf_put_uninit(buf, sizeof *osc);
2834 flags = ofproto->frag_handling;
2835 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2836 if (oh->version < OFP13_VERSION
2837 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
2838 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
2840 osc->flags = htons(flags);
2841 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
2842 ofconn_send_reply(ofconn, buf);
2848 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
2850 const struct ofp_switch_config *osc = ofpmsg_body(oh);
2851 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2852 uint16_t flags = ntohs(osc->flags);
2854 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
2855 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
2856 enum ofp_config_flags cur = ofproto->frag_handling;
2857 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
2859 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
2861 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
2862 ofproto->frag_handling = next;
2864 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
2866 ofputil_frag_handling_to_string(next));
2870 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2871 ofconn_set_invalid_ttl_to_controller(ofconn,
2872 (oh->version < OFP13_VERSION
2873 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
2875 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
2880 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2881 * error message code for the caller to propagate upward. Otherwise, returns
2884 * The log message mentions 'msg_type'. */
2886 reject_slave_controller(struct ofconn *ofconn)
2888 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
2889 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
2890 return OFPERR_OFPBRC_EPERM;
2896 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
2899 * - If they use a meter, then 'ofproto' has that meter configured.
2901 * - If they use any groups, then 'ofproto' has that group configured.
2903 * Returns 0 if successful, otherwise an OpenFlow error. */
2905 ofproto_check_ofpacts(struct ofproto *ofproto,
2906 const struct ofpact ofpacts[], size_t ofpacts_len)
2908 const struct ofpact *a;
2911 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
2912 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
2913 return OFPERR_OFPMMFC_INVALID_METER;
2916 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2917 if (a->type == OFPACT_GROUP
2918 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
2919 return OFPERR_OFPBAC_BAD_OUT_GROUP;
2927 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
2929 struct ofproto *p = ofconn_get_ofproto(ofconn);
2930 struct ofputil_packet_out po;
2931 struct ofpbuf *payload;
2932 uint64_t ofpacts_stub[1024 / 8];
2933 struct ofpbuf ofpacts;
2935 union flow_in_port in_port_;
2938 COVERAGE_INC(ofproto_packet_out);
2940 error = reject_slave_controller(ofconn);
2945 /* Decode message. */
2946 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
2947 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
2949 goto exit_free_ofpacts;
2951 if (ofp_to_u16(po.in_port) >= p->max_ports
2952 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
2953 error = OFPERR_OFPBRC_BAD_PORT;
2954 goto exit_free_ofpacts;
2958 if (po.buffer_id != UINT32_MAX) {
2959 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
2960 if (error || !payload) {
2961 goto exit_free_ofpacts;
2964 /* Ensure that the L3 header is 32-bit aligned. */
2965 payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2);
2968 /* Verify actions against packet, then send packet if successful. */
2969 in_port_.ofp_port = po.in_port;
2970 flow_extract(payload, 0, 0, NULL, &in_port_, &flow);
2971 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
2973 error = p->ofproto_class->packet_out(p, payload, &flow,
2974 po.ofpacts, po.ofpacts_len);
2976 ofpbuf_delete(payload);
2979 ofpbuf_uninit(&ofpacts);
2985 update_port_config(struct ofport *port,
2986 enum ofputil_port_config config,
2987 enum ofputil_port_config mask)
2989 enum ofputil_port_config old_config = port->pp.config;
2990 enum ofputil_port_config toggle;
2992 toggle = (config ^ port->pp.config) & mask;
2993 if (toggle & OFPUTIL_PC_PORT_DOWN) {
2994 if (config & OFPUTIL_PC_PORT_DOWN) {
2995 netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL);
2997 netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL);
2999 toggle &= ~OFPUTIL_PC_PORT_DOWN;
3002 port->pp.config ^= toggle;
3003 if (port->pp.config != old_config) {
3004 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
3009 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
3011 struct ofproto *p = ofconn_get_ofproto(ofconn);
3012 struct ofputil_port_mod pm;
3013 struct ofport *port;
3016 error = reject_slave_controller(ofconn);
3021 error = ofputil_decode_port_mod(oh, &pm);
3026 port = ofproto_get_port(p, pm.port_no);
3028 return OFPERR_OFPPMFC_BAD_PORT;
3029 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
3030 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3032 update_port_config(port, pm.config, pm.mask);
3034 netdev_set_advertisements(port->netdev, pm.advertise);
3041 handle_desc_stats_request(struct ofconn *ofconn,
3042 const struct ofp_header *request)
3044 static const char *default_mfr_desc = "Nicira, Inc.";
3045 static const char *default_hw_desc = "Open vSwitch";
3046 static const char *default_sw_desc = VERSION;
3047 static const char *default_serial_desc = "None";
3048 static const char *default_dp_desc = "None";
3050 struct ofproto *p = ofconn_get_ofproto(ofconn);
3051 struct ofp_desc_stats *ods;
3054 msg = ofpraw_alloc_stats_reply(request, 0);
3055 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3056 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3057 sizeof ods->mfr_desc);
3058 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3059 sizeof ods->hw_desc);
3060 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3061 sizeof ods->sw_desc);
3062 ovs_strlcpy(ods->serial_num,
3063 p->serial_desc ? p->serial_desc : default_serial_desc,
3064 sizeof ods->serial_num);
3065 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3066 sizeof ods->dp_desc);
3067 ofconn_send_reply(ofconn, msg);
3073 handle_table_stats_request(struct ofconn *ofconn,
3074 const struct ofp_header *request)
3076 struct ofproto *p = ofconn_get_ofproto(ofconn);
3077 struct ofp12_table_stats *ots;
3082 /* Set up default values.
3084 * ofp12_table_stats is used as a generic structure as
3085 * it is able to hold all the fields for ofp10_table_stats
3086 * and ofp11_table_stats (and of course itself).
3088 ots = xcalloc(p->n_tables, sizeof *ots);
3089 for (i = 0; i < p->n_tables; i++) {
3090 ots[i].table_id = i;
3091 sprintf(ots[i].name, "table%"PRIuSIZE, i);
3092 ots[i].match = htonll(OFPXMT13_MASK);
3093 ots[i].wildcards = htonll(OFPXMT13_MASK);
3094 ots[i].write_actions = htonl(OFPAT11_OUTPUT);
3095 ots[i].apply_actions = htonl(OFPAT11_OUTPUT);
3096 ots[i].write_setfields = htonll(OFPXMT13_MASK);
3097 ots[i].apply_setfields = htonll(OFPXMT13_MASK);
3098 ots[i].metadata_match = OVS_BE64_MAX;
3099 ots[i].metadata_write = OVS_BE64_MAX;
3100 ots[i].instructions = htonl(OFPIT11_ALL);
3101 ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK);
3102 ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */
3103 fat_rwlock_rdlock(&p->tables[i].cls.rwlock);
3104 ots[i].active_count = htonl(classifier_count(&p->tables[i].cls));
3105 fat_rwlock_unlock(&p->tables[i].cls.rwlock);
3108 p->ofproto_class->get_tables(p, ots);
3110 /* Post-process the tables, dropping hidden tables. */
3111 n_tables = p->n_tables;
3112 for (i = 0; i < p->n_tables; i++) {
3113 const struct oftable *table = &p->tables[i];
3115 if (table->flags & OFTABLE_HIDDEN) {
3121 ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name);
3124 if (table->max_flows < ntohl(ots[i].max_entries)) {
3125 ots[i].max_entries = htonl(table->max_flows);
3129 msg = ofputil_encode_table_stats_reply(ots, n_tables, request);
3130 ofconn_send_reply(ofconn, msg);
3138 append_port_stat(struct ofport *port, struct list *replies)
3140 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3142 calc_duration(port->created, time_msec(),
3143 &ops.duration_sec, &ops.duration_nsec);
3145 /* Intentionally ignore return value, since errors will set
3146 * 'stats' to all-1s, which is correct for OpenFlow, and
3147 * netdev_get_stats() will log errors. */
3148 ofproto_port_get_stats(port, &ops.stats);
3150 ofputil_append_port_stat(replies, &ops);
3154 handle_port_stats_request(struct ofconn *ofconn,
3155 const struct ofp_header *request)
3157 struct ofproto *p = ofconn_get_ofproto(ofconn);
3158 struct ofport *port;
3159 struct list replies;
3163 error = ofputil_decode_port_stats_request(request, &port_no);
3168 ofpmp_init(&replies, request);
3169 if (port_no != OFPP_ANY) {
3170 port = ofproto_get_port(p, port_no);
3172 append_port_stat(port, &replies);
3175 HMAP_FOR_EACH (port, hmap_node, &p->ports) {
3176 append_port_stat(port, &replies);
3180 ofconn_send_replies(ofconn, &replies);
3185 handle_port_desc_stats_request(struct ofconn *ofconn,
3186 const struct ofp_header *request)
3188 struct ofproto *p = ofconn_get_ofproto(ofconn);
3189 enum ofp_version version;
3190 struct ofport *port;
3191 struct list replies;
3193 ofpmp_init(&replies, request);
3195 version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn));
3196 HMAP_FOR_EACH (port, hmap_node, &p->ports) {
3197 ofputil_append_port_desc_stats_reply(version, &port->pp, &replies);
3200 ofconn_send_replies(ofconn, &replies);
3205 hash_cookie(ovs_be64 cookie)
3207 return hash_2words((OVS_FORCE uint64_t)cookie >> 32,
3208 (OVS_FORCE uint64_t)cookie);
3212 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3213 OVS_REQUIRES(ofproto_mutex)
3215 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3216 hash_cookie(rule->flow_cookie));
3220 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3221 OVS_REQUIRES(ofproto_mutex)
3223 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3227 ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule,
3228 ovs_be64 new_cookie)
3229 OVS_REQUIRES(ofproto_mutex)
3231 if (new_cookie != rule->flow_cookie) {
3232 cookies_remove(ofproto, rule);
3234 ovs_mutex_lock(&rule->mutex);
3235 rule->flow_cookie = new_cookie;
3236 ovs_mutex_unlock(&rule->mutex);
3238 cookies_insert(ofproto, rule);
3243 calc_duration(long long int start, long long int now,
3244 uint32_t *sec, uint32_t *nsec)
3246 long long int msecs = now - start;
3247 *sec = msecs / 1000;
3248 *nsec = (msecs % 1000) * (1000 * 1000);
3251 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3252 * true if 'table_id' is OK, false otherwise. */
3254 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3256 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
3259 static struct oftable *
3260 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3262 struct oftable *table;
3264 for (table = &ofproto->tables[table_id];
3265 table < &ofproto->tables[ofproto->n_tables];
3267 if (!(table->flags & OFTABLE_HIDDEN)) {
3275 static struct oftable *
3276 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3278 if (table_id == 0xff) {
3279 return next_visible_table(ofproto, 0);
3280 } else if (table_id < ofproto->n_tables) {
3281 return &ofproto->tables[table_id];
3287 static struct oftable *
3288 next_matching_table(const struct ofproto *ofproto,
3289 const struct oftable *table, uint8_t table_id)
3291 return (table_id == 0xff
3292 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3296 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3298 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3299 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3301 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3302 * only once, for that table. (This can be used to access tables marked
3305 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3306 * entered at all. (Perhaps you should have validated TABLE_ID with
3307 * check_table_id().)
3309 * All parameters are evaluated multiple times.
3311 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3312 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3314 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3316 /* Initializes 'criteria' in a straightforward way based on the other
3319 * For "loose" matching, the 'priority' parameter is unimportant and may be
3322 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3323 const struct match *match, unsigned int priority,
3324 ovs_be64 cookie, ovs_be64 cookie_mask,
3325 ofp_port_t out_port, uint32_t out_group)
3327 criteria->table_id = table_id;
3328 cls_rule_init(&criteria->cr, match, priority);
3329 criteria->cookie = cookie;
3330 criteria->cookie_mask = cookie_mask;
3331 criteria->out_port = out_port;
3332 criteria->out_group = out_group;
3336 rule_criteria_destroy(struct rule_criteria *criteria)
3338 cls_rule_destroy(&criteria->cr);
3342 rule_collection_init(struct rule_collection *rules)
3344 rules->rules = rules->stub;
3346 rules->capacity = ARRAY_SIZE(rules->stub);
3350 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3352 if (rules->n >= rules->capacity) {
3353 size_t old_size, new_size;
3355 old_size = rules->capacity * sizeof *rules->rules;
3356 rules->capacity *= 2;
3357 new_size = rules->capacity * sizeof *rules->rules;
3359 if (rules->rules == rules->stub) {
3360 rules->rules = xmalloc(new_size);
3361 memcpy(rules->rules, rules->stub, old_size);
3363 rules->rules = xrealloc(rules->rules, new_size);
3367 rules->rules[rules->n++] = rule;
3371 rule_collection_ref(struct rule_collection *rules)
3372 OVS_REQUIRES(ofproto_mutex)
3376 for (i = 0; i < rules->n; i++) {
3377 ofproto_rule_ref(rules->rules[i]);
3382 rule_collection_unref(struct rule_collection *rules)
3386 for (i = 0; i < rules->n; i++) {
3387 ofproto_rule_unref(rules->rules[i]);
3392 rule_collection_destroy(struct rule_collection *rules)
3394 if (rules->rules != rules->stub) {
3400 collect_rule(struct rule *rule, const struct rule_criteria *c,
3401 struct rule_collection *rules)
3402 OVS_REQUIRES(ofproto_mutex)
3404 /* We ordinarily want to skip hidden rules, but there has to be a way for
3405 * code internal to OVS to modify and delete them, so if the criteria
3406 * specify a priority that can only be for a hidden flow, then allow hidden
3407 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3408 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3410 if (ofproto_rule_is_hidden(rule) && c->cr.priority <= UINT16_MAX) {
3412 } else if (rule->pending) {
3413 return OFPROTO_POSTPONE;
3415 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3416 && ofproto_rule_has_out_port(rule, c->out_port)
3417 && ofproto_rule_has_out_group(rule, c->out_group)
3418 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) {
3419 rule_collection_add(rules, rule);
3425 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3426 * on classifiers rules are done in the "loose" way required for OpenFlow
3427 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3430 * Hidden rules are always omitted.
3432 * Returns 0 on success, otherwise an OpenFlow error code. */
3434 collect_rules_loose(struct ofproto *ofproto,
3435 const struct rule_criteria *criteria,
3436 struct rule_collection *rules)
3437 OVS_REQUIRES(ofproto_mutex)
3439 struct oftable *table;
3440 enum ofperr error = 0;
3442 rule_collection_init(rules);
3444 if (!check_table_id(ofproto, criteria->table_id)) {
3445 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3449 if (criteria->cookie_mask == OVS_BE64_MAX) {
3452 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3453 hash_cookie(criteria->cookie),
3454 &ofproto->cookies) {
3455 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
3456 error = collect_rule(rule, criteria, rules);
3463 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3464 struct cls_cursor cursor;
3467 fat_rwlock_rdlock(&table->cls.rwlock);
3468 cls_cursor_init(&cursor, &table->cls, &criteria->cr);
3469 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
3470 error = collect_rule(rule, criteria, rules);
3475 fat_rwlock_unlock(&table->cls.rwlock);
3481 rule_collection_destroy(rules);
3486 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3487 * on classifiers rules are done in the "strict" way required for OpenFlow
3488 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3489 * rules on list 'rules'.
3491 * Hidden rules are always omitted.
3493 * Returns 0 on success, otherwise an OpenFlow error code. */
3495 collect_rules_strict(struct ofproto *ofproto,
3496 const struct rule_criteria *criteria,
3497 struct rule_collection *rules)
3498 OVS_REQUIRES(ofproto_mutex)
3500 struct oftable *table;
3503 rule_collection_init(rules);
3505 if (!check_table_id(ofproto, criteria->table_id)) {
3506 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3510 if (criteria->cookie_mask == OVS_BE64_MAX) {
3513 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3514 hash_cookie(criteria->cookie),
3515 &ofproto->cookies) {
3516 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
3517 error = collect_rule(rule, criteria, rules);
3524 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3527 fat_rwlock_rdlock(&table->cls.rwlock);
3528 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3529 &table->cls, &criteria->cr));
3530 fat_rwlock_unlock(&table->cls.rwlock);
3532 error = collect_rule(rule, criteria, rules);
3542 rule_collection_destroy(rules);
3547 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3548 * forced into the range of a uint16_t. */
3550 age_secs(long long int age_ms)
3552 return (age_ms < 0 ? 0
3553 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
3554 : (unsigned int) age_ms / 1000);
3558 handle_flow_stats_request(struct ofconn *ofconn,
3559 const struct ofp_header *request)
3560 OVS_EXCLUDED(ofproto_mutex)
3562 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3563 struct ofputil_flow_stats_request fsr;
3564 struct rule_criteria criteria;
3565 struct rule_collection rules;
3566 struct list replies;
3570 error = ofputil_decode_flow_stats_request(&fsr, request);
3575 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
3576 fsr.cookie_mask, fsr.out_port, fsr.out_group);
3578 ovs_mutex_lock(&ofproto_mutex);
3579 error = collect_rules_loose(ofproto, &criteria, &rules);
3580 rule_criteria_destroy(&criteria);
3582 rule_collection_ref(&rules);
3584 ovs_mutex_unlock(&ofproto_mutex);
3590 ofpmp_init(&replies, request);
3591 for (i = 0; i < rules.n; i++) {
3592 struct rule *rule = rules.rules[i];
3593 long long int now = time_msec();
3594 struct ofputil_flow_stats fs;
3595 long long int created, used, modified;
3596 struct rule_actions *actions;
3597 enum ofputil_flow_mod_flags flags;
3599 ovs_mutex_lock(&rule->mutex);
3600 fs.cookie = rule->flow_cookie;
3601 fs.idle_timeout = rule->idle_timeout;
3602 fs.hard_timeout = rule->hard_timeout;
3603 created = rule->created;
3605 modified = rule->modified;
3606 actions = rule_get_actions__(rule);
3607 flags = rule->flags;
3608 ovs_mutex_unlock(&rule->mutex);
3610 minimatch_expand(&rule->cr.match, &fs.match);
3611 fs.table_id = rule->table_id;
3612 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
3613 fs.priority = rule->cr.priority;
3614 fs.idle_age = age_secs(now - used);
3615 fs.hard_age = age_secs(now - modified);
3616 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
3618 fs.ofpacts = actions->ofpacts;
3619 fs.ofpacts_len = actions->ofpacts_len;
3622 ofputil_append_flow_stats_reply(&fs, &replies);
3624 rule_actions_unref(actions);
3627 rule_collection_unref(&rules);
3628 rule_collection_destroy(&rules);
3630 ofconn_send_replies(ofconn, &replies);
3636 flow_stats_ds(struct rule *rule, struct ds *results)
3638 uint64_t packet_count, byte_count;
3639 struct rule_actions *actions;
3640 long long int created;
3642 rule->ofproto->ofproto_class->rule_get_stats(rule,
3643 &packet_count, &byte_count);
3645 ovs_mutex_lock(&rule->mutex);
3646 actions = rule_get_actions__(rule);
3647 created = rule->created;
3648 ovs_mutex_unlock(&rule->mutex);
3650 if (rule->table_id != 0) {
3651 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
3653 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
3654 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
3655 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
3656 cls_rule_format(&rule->cr, results);
3657 ds_put_char(results, ',');
3659 ds_put_cstr(results, "actions=");
3660 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
3662 ds_put_cstr(results, "\n");
3664 rule_actions_unref(actions);
3667 /* Adds a pretty-printed description of all flows to 'results', including
3668 * hidden flows (e.g., set up by in-band control). */
3670 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
3672 struct oftable *table;
3674 OFPROTO_FOR_EACH_TABLE (table, p) {
3675 struct cls_cursor cursor;
3678 fat_rwlock_rdlock(&table->cls.rwlock);
3679 cls_cursor_init(&cursor, &table->cls, NULL);
3680 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
3681 flow_stats_ds(rule, results);
3683 fat_rwlock_unlock(&table->cls.rwlock);
3687 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3688 * '*engine_type' and '*engine_id', respectively. */
3690 ofproto_get_netflow_ids(const struct ofproto *ofproto,
3691 uint8_t *engine_type, uint8_t *engine_id)
3693 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
3696 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns
3697 * true if the port's CFM status was successfully stored into '*status'.
3698 * Returns false if the port did not have CFM configured, in which case
3699 * '*status' is indeterminate.
3701 * The caller must provide and owns '*status', and must free 'status->rmps'. */
3703 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
3704 struct ofproto_cfm_status *status)
3706 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
3708 && ofproto->ofproto_class->get_cfm_status
3709 && ofproto->ofproto_class->get_cfm_status(ofport, status));
3713 handle_aggregate_stats_request(struct ofconn *ofconn,
3714 const struct ofp_header *oh)
3715 OVS_EXCLUDED(ofproto_mutex)
3717 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3718 struct ofputil_flow_stats_request request;
3719 struct ofputil_aggregate_stats stats;
3720 bool unknown_packets, unknown_bytes;
3721 struct rule_criteria criteria;
3722 struct rule_collection rules;
3723 struct ofpbuf *reply;
3727 error = ofputil_decode_flow_stats_request(&request, oh);
3732 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
3733 request.cookie, request.cookie_mask,
3734 request.out_port, request.out_group);
3736 ovs_mutex_lock(&ofproto_mutex);
3737 error = collect_rules_loose(ofproto, &criteria, &rules);
3738 rule_criteria_destroy(&criteria);
3740 rule_collection_ref(&rules);
3742 ovs_mutex_unlock(&ofproto_mutex);
3748 memset(&stats, 0, sizeof stats);
3749 unknown_packets = unknown_bytes = false;
3750 for (i = 0; i < rules.n; i++) {
3751 struct rule *rule = rules.rules[i];
3752 uint64_t packet_count;
3753 uint64_t byte_count;
3755 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
3758 if (packet_count == UINT64_MAX) {
3759 unknown_packets = true;
3761 stats.packet_count += packet_count;
3764 if (byte_count == UINT64_MAX) {
3765 unknown_bytes = true;
3767 stats.byte_count += byte_count;
3772 if (unknown_packets) {
3773 stats.packet_count = UINT64_MAX;
3775 if (unknown_bytes) {
3776 stats.byte_count = UINT64_MAX;
3779 rule_collection_unref(&rules);
3780 rule_collection_destroy(&rules);
3782 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
3783 ofconn_send_reply(ofconn, reply);
3788 struct queue_stats_cbdata {
3789 struct ofport *ofport;
3790 struct list replies;
3795 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
3796 const struct netdev_queue_stats *stats)
3798 struct ofputil_queue_stats oqs;
3800 oqs.port_no = cbdata->ofport->pp.port_no;
3801 oqs.queue_id = queue_id;
3802 oqs.tx_bytes = stats->tx_bytes;
3803 oqs.tx_packets = stats->tx_packets;
3804 oqs.tx_errors = stats->tx_errors;
3805 if (stats->created != LLONG_MIN) {
3806 calc_duration(stats->created, cbdata->now,
3807 &oqs.duration_sec, &oqs.duration_nsec);
3809 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
3811 ofputil_append_queue_stat(&cbdata->replies, &oqs);
3815 handle_queue_stats_dump_cb(uint32_t queue_id,
3816 struct netdev_queue_stats *stats,
3819 struct queue_stats_cbdata *cbdata = cbdata_;
3821 put_queue_stats(cbdata, queue_id, stats);
3825 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
3826 struct queue_stats_cbdata *cbdata)
3828 cbdata->ofport = port;
3829 if (queue_id == OFPQ_ALL) {
3830 netdev_dump_queue_stats(port->netdev,
3831 handle_queue_stats_dump_cb, cbdata);
3833 struct netdev_queue_stats stats;
3835 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
3836 put_queue_stats(cbdata, queue_id, &stats);
3838 return OFPERR_OFPQOFC_BAD_QUEUE;
3845 handle_queue_stats_request(struct ofconn *ofconn,
3846 const struct ofp_header *rq)
3848 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3849 struct queue_stats_cbdata cbdata;
3850 struct ofport *port;
3852 struct ofputil_queue_stats_request oqsr;
3854 COVERAGE_INC(ofproto_queue_req);
3856 ofpmp_init(&cbdata.replies, rq);
3857 cbdata.now = time_msec();
3859 error = ofputil_decode_queue_stats_request(rq, &oqsr);
3864 if (oqsr.port_no == OFPP_ANY) {
3865 error = OFPERR_OFPQOFC_BAD_QUEUE;
3866 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3867 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
3872 port = ofproto_get_port(ofproto, oqsr.port_no);
3874 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
3875 : OFPERR_OFPQOFC_BAD_PORT);
3878 ofconn_send_replies(ofconn, &cbdata.replies);
3880 ofpbuf_list_delete(&cbdata.replies);
3887 is_flow_deletion_pending(const struct ofproto *ofproto,
3888 const struct cls_rule *cls_rule,
3890 OVS_REQUIRES(ofproto_mutex)
3892 if (!hmap_is_empty(&ofproto->deletions)) {
3893 struct ofoperation *op;
3895 HMAP_FOR_EACH_WITH_HASH (op, hmap_node,
3896 cls_rule_hash(cls_rule, table_id),
3897 &ofproto->deletions) {
3898 if (cls_rule_equal(cls_rule, &op->rule->cr)) {
3908 should_evict_a_rule(struct oftable *table, unsigned int extra_space)
3909 OVS_REQUIRES(ofproto_mutex)
3910 OVS_NO_THREAD_SAFETY_ANALYSIS
3912 return classifier_count(&table->cls) + extra_space > table->max_flows;
3916 evict_rules_from_table(struct ofproto *ofproto, struct oftable *table,
3917 unsigned int extra_space)
3918 OVS_REQUIRES(ofproto_mutex)
3920 while (should_evict_a_rule(table, extra_space)) {
3923 if (!choose_rule_to_evict(table, &rule)) {
3924 return OFPERR_OFPFMFC_TABLE_FULL;
3925 } else if (rule->pending) {
3926 return OFPROTO_POSTPONE;
3928 struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
3929 delete_flow__(rule, group, OFPRR_EVICTION);
3930 ofopgroup_submit(group);
3937 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3938 * in which no matching flow already exists in the flow table.
3940 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3941 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
3942 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
3943 * initiated now but may be retried later.
3945 * The caller retains ownership of 'fm->ofpacts'.
3947 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3950 add_flow(struct ofproto *ofproto, struct ofconn *ofconn,
3951 struct ofputil_flow_mod *fm, const struct ofp_header *request)
3952 OVS_REQUIRES(ofproto_mutex)
3954 struct oftable *table;
3955 struct ofopgroup *group;
3961 if (!check_table_id(ofproto, fm->table_id)) {
3962 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3967 if (fm->table_id == 0xff) {
3968 if (ofproto->ofproto_class->rule_choose_table) {
3969 error = ofproto->ofproto_class->rule_choose_table(ofproto,
3975 ovs_assert(table_id < ofproto->n_tables);
3979 } else if (fm->table_id < ofproto->n_tables) {
3980 table_id = fm->table_id;
3982 return OFPERR_OFPBRC_BAD_TABLE_ID;
3985 table = &ofproto->tables[table_id];
3987 if (table->flags & OFTABLE_READONLY) {
3988 return OFPERR_OFPBRC_EPERM;
3991 cls_rule_init(&cr, &fm->match, fm->priority);
3993 /* Transform "add" into "modify" if there's an existing identical flow. */
3994 fat_rwlock_rdlock(&table->cls.rwlock);
3995 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
3996 fat_rwlock_unlock(&table->cls.rwlock);
3998 cls_rule_destroy(&cr);
3999 if (!rule_is_modifiable(rule)) {
4000 return OFPERR_OFPBRC_EPERM;
4001 } else if (rule->pending) {
4002 return OFPROTO_POSTPONE;
4004 struct rule_collection rules;
4006 rule_collection_init(&rules);
4007 rule_collection_add(&rules, rule);
4008 fm->modify_cookie = true;
4009 error = modify_flows__(ofproto, ofconn, fm, request, &rules);
4010 rule_collection_destroy(&rules);
4016 /* Serialize against pending deletion. */
4017 if (is_flow_deletion_pending(ofproto, &cr, table_id)) {
4018 cls_rule_destroy(&cr);
4019 return OFPROTO_POSTPONE;
4022 /* Check for overlap, if requested. */
4023 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
4026 fat_rwlock_rdlock(&table->cls.rwlock);
4027 overlaps = classifier_rule_overlaps(&table->cls, &cr);
4028 fat_rwlock_unlock(&table->cls.rwlock);
4031 cls_rule_destroy(&cr);
4032 return OFPERR_OFPFMFC_OVERLAP;
4036 /* If necessary, evict an existing rule to clear out space. */
4037 error = evict_rules_from_table(ofproto, table, 1);
4039 cls_rule_destroy(&cr);
4043 /* Allocate new rule. */
4044 rule = ofproto->ofproto_class->rule_alloc();
4046 cls_rule_destroy(&cr);
4047 VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
4048 ofproto->name, ovs_strerror(error));
4052 /* Initialize base state. */
4053 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
4054 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr);
4055 ovs_refcount_init(&rule->ref_count);
4056 rule->pending = NULL;
4057 rule->flow_cookie = fm->new_cookie;
4058 rule->created = rule->modified = rule->used = time_msec();
4060 ovs_mutex_init(&rule->mutex);
4061 ovs_mutex_lock(&rule->mutex);
4062 rule->idle_timeout = fm->idle_timeout;
4063 rule->hard_timeout = fm->hard_timeout;
4064 ovs_mutex_unlock(&rule->mutex);
4066 *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables;
4067 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4068 rule->actions = rule_actions_create(ofproto, fm->ofpacts, fm->ofpacts_len);
4069 list_init(&rule->meter_list_node);
4070 rule->eviction_group = NULL;
4071 list_init(&rule->expirable);
4072 rule->monitor_flags = 0;
4073 rule->add_seqno = 0;
4074 rule->modify_seqno = 0;
4076 /* Construct rule, initializing derived state. */
4077 error = ofproto->ofproto_class->rule_construct(rule);
4079 ofproto_rule_destroy__(rule);
4084 oftable_insert_rule(rule);
4086 group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
4087 ofoperation_create(group, rule, OFOPERATION_ADD, 0);
4088 ofproto->ofproto_class->rule_insert(rule);
4089 ofopgroup_submit(group);
4094 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4096 /* Modifies the rules listed in 'rules', changing their actions to match those
4099 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4102 * Returns 0 on success, otherwise an OpenFlow error code. */
4104 modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
4105 struct ofputil_flow_mod *fm, const struct ofp_header *request,
4106 const struct rule_collection *rules)
4107 OVS_REQUIRES(ofproto_mutex)
4109 enum ofoperation_type type;
4110 struct ofopgroup *group;
4114 type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY;
4115 group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id);
4116 error = OFPERR_OFPBRC_EPERM;
4117 for (i = 0; i < rules->n; i++) {
4118 struct rule *rule = rules->rules[i];
4119 struct ofoperation *op;
4120 bool actions_changed;
4121 bool reset_counters;
4123 /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */
4125 if (rule_is_modifiable(rule)) {
4126 /* At least one rule is modifiable, don't report EPERM error. */
4132 actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
4133 rule->actions->ofpacts,
4134 rule->actions->ofpacts_len);
4136 op = ofoperation_create(group, rule, type, 0);
4138 if (fm->modify_cookie && fm->new_cookie != OVS_BE64_MAX) {
4139 ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie);
4141 if (type == OFOPERATION_REPLACE) {
4142 ovs_mutex_lock(&rule->mutex);
4143 rule->idle_timeout = fm->idle_timeout;
4144 rule->hard_timeout = fm->hard_timeout;
4145 ovs_mutex_unlock(&rule->mutex);
4147 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4148 if (fm->idle_timeout || fm->hard_timeout) {
4149 if (!rule->eviction_group) {
4150 eviction_group_add_rule(rule);
4153 eviction_group_remove_rule(rule);
4157 reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
4158 if (actions_changed || reset_counters) {
4159 struct rule_actions *new_actions;
4161 op->actions = rule->actions;
4162 new_actions = rule_actions_create(ofproto,
4163 fm->ofpacts, fm->ofpacts_len);
4165 ovs_mutex_lock(&rule->mutex);
4166 rule->actions = new_actions;
4167 ovs_mutex_unlock(&rule->mutex);
4169 rule->ofproto->ofproto_class->rule_modify_actions(rule,
4172 ofoperation_complete(op, 0);
4175 ofopgroup_submit(group);
4181 modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn,
4182 struct ofputil_flow_mod *fm, const struct ofp_header *request)
4183 OVS_REQUIRES(ofproto_mutex)
4185 if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) {
4188 return add_flow(ofproto, ofconn, fm, request);
4191 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4194 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4197 modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
4198 struct ofputil_flow_mod *fm,
4199 const struct ofp_header *request)
4200 OVS_REQUIRES(ofproto_mutex)
4202 struct rule_criteria criteria;
4203 struct rule_collection rules;
4206 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4207 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4208 error = collect_rules_loose(ofproto, &criteria, &rules);
4209 rule_criteria_destroy(&criteria);
4212 error = (rules.n > 0
4213 ? modify_flows__(ofproto, ofconn, fm, request, &rules)
4214 : modify_flows_add(ofproto, ofconn, fm, request));
4217 rule_collection_destroy(&rules);
4222 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4225 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4228 modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
4229 struct ofputil_flow_mod *fm,
4230 const struct ofp_header *request)
4231 OVS_REQUIRES(ofproto_mutex)
4233 struct rule_criteria criteria;
4234 struct rule_collection rules;
4237 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4238 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4239 error = collect_rules_strict(ofproto, &criteria, &rules);
4240 rule_criteria_destroy(&criteria);
4244 error = modify_flows_add(ofproto, ofconn, fm, request);
4245 } else if (rules.n == 1) {
4246 error = modify_flows__(ofproto, ofconn, fm, request, &rules);
4250 rule_collection_destroy(&rules);
4255 /* OFPFC_DELETE implementation. */
4258 delete_flow__(struct rule *rule, struct ofopgroup *group,
4259 enum ofp_flow_removed_reason reason)
4260 OVS_REQUIRES(ofproto_mutex)
4262 struct ofproto *ofproto = rule->ofproto;
4264 ofproto_rule_send_removed(rule, reason);
4266 ofoperation_create(group, rule, OFOPERATION_DELETE, reason);
4267 oftable_remove_rule(rule);
4268 ofproto->ofproto_class->rule_delete(rule);
4271 /* Deletes the rules listed in 'rules'.
4273 * Returns 0 on success, otherwise an OpenFlow error code. */
4275 delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn,
4276 const struct ofp_header *request,
4277 const struct rule_collection *rules,
4278 enum ofp_flow_removed_reason reason)
4279 OVS_REQUIRES(ofproto_mutex)
4281 struct ofopgroup *group;
4284 group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX);
4285 for (i = 0; i < rules->n; i++) {
4286 delete_flow__(rules->rules[i], group, reason);
4288 ofopgroup_submit(group);
4293 /* Implements OFPFC_DELETE. */
4295 delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn,
4296 const struct ofputil_flow_mod *fm,
4297 const struct ofp_header *request)
4298 OVS_REQUIRES(ofproto_mutex)
4300 struct rule_criteria criteria;
4301 struct rule_collection rules;
4304 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4305 fm->cookie, fm->cookie_mask,
4306 fm->out_port, fm->out_group);
4307 error = collect_rules_loose(ofproto, &criteria, &rules);
4308 rule_criteria_destroy(&criteria);
4310 if (!error && rules.n > 0) {
4311 error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
4313 rule_collection_destroy(&rules);
4318 /* Implements OFPFC_DELETE_STRICT. */
4320 delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn,
4321 const struct ofputil_flow_mod *fm,
4322 const struct ofp_header *request)
4323 OVS_REQUIRES(ofproto_mutex)
4325 struct rule_criteria criteria;
4326 struct rule_collection rules;
4329 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4330 fm->cookie, fm->cookie_mask,
4331 fm->out_port, fm->out_group);
4332 error = collect_rules_strict(ofproto, &criteria, &rules);
4333 rule_criteria_destroy(&criteria);
4335 if (!error && rules.n > 0) {
4336 error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE);
4338 rule_collection_destroy(&rules);
4344 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
4345 OVS_REQUIRES(ofproto_mutex)
4347 struct ofputil_flow_removed fr;
4349 if (ofproto_rule_is_hidden(rule) ||
4350 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
4354 minimatch_expand(&rule->cr.match, &fr.match);
4355 fr.priority = rule->cr.priority;
4356 fr.cookie = rule->flow_cookie;
4358 fr.table_id = rule->table_id;
4359 calc_duration(rule->created, time_msec(),
4360 &fr.duration_sec, &fr.duration_nsec);
4361 ovs_mutex_lock(&rule->mutex);
4362 fr.idle_timeout = rule->idle_timeout;
4363 fr.hard_timeout = rule->hard_timeout;
4364 ovs_mutex_unlock(&rule->mutex);
4365 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
4368 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
4371 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4372 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4375 * 'rule' must not have a pending operation (that is, 'rule->pending' must be
4378 * ofproto implementation ->run() functions should use this function to expire
4379 * OpenFlow flows. */
4381 ofproto_rule_expire(struct rule *rule, uint8_t reason)
4382 OVS_REQUIRES(ofproto_mutex)
4384 struct ofproto *ofproto = rule->ofproto;
4386 ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT
4387 || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE);
4389 ofproto_rule_delete__(ofproto, rule, reason);
4392 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4393 * means "infinite". */
4395 reduce_timeout(uint16_t max, uint16_t *timeout)
4397 if (max && (!*timeout || *timeout > max)) {
4402 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
4403 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
4404 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
4406 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
4408 ofproto_rule_reduce_timeouts(struct rule *rule,
4409 uint16_t idle_timeout, uint16_t hard_timeout)
4410 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
4412 if (!idle_timeout && !hard_timeout) {
4416 ovs_mutex_lock(&ofproto_mutex);
4417 if (list_is_empty(&rule->expirable)) {
4418 list_insert(&rule->ofproto->expirable, &rule->expirable);
4420 ovs_mutex_unlock(&ofproto_mutex);
4422 ovs_mutex_lock(&rule->mutex);
4423 reduce_timeout(idle_timeout, &rule->idle_timeout);
4424 reduce_timeout(hard_timeout, &rule->hard_timeout);
4425 ovs_mutex_unlock(&rule->mutex);
4429 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
4430 OVS_EXCLUDED(ofproto_mutex)
4432 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4433 struct ofputil_flow_mod fm;
4434 uint64_t ofpacts_stub[1024 / 8];
4435 struct ofpbuf ofpacts;
4439 error = reject_slave_controller(ofconn);
4444 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
4445 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
4447 u16_to_ofp(ofproto->max_ports),
4450 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
4453 error = handle_flow_mod__(ofproto, ofconn, &fm, oh);
4456 goto exit_free_ofpacts;
4459 /* Record the operation for logging a summary report. */
4460 switch (fm.command) {
4466 case OFPFC_MODIFY_STRICT:
4467 ofproto->n_modify++;
4471 case OFPFC_DELETE_STRICT:
4472 ofproto->n_delete++;
4477 if (ofproto->next_op_report == LLONG_MAX) {
4478 ofproto->first_op = now;
4479 ofproto->next_op_report = MAX(now + 10 * 1000,
4480 ofproto->op_backoff);
4481 ofproto->op_backoff = ofproto->next_op_report + 60 * 1000;
4483 ofproto->last_op = now;
4486 ofpbuf_uninit(&ofpacts);
4492 handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn,
4493 struct ofputil_flow_mod *fm, const struct ofp_header *oh)
4494 OVS_EXCLUDED(ofproto_mutex)
4498 ovs_mutex_lock(&ofproto_mutex);
4499 if (ofproto->n_pending < 50) {
4500 switch (fm->command) {
4502 error = add_flow(ofproto, ofconn, fm, oh);
4506 error = modify_flows_loose(ofproto, ofconn, fm, oh);
4509 case OFPFC_MODIFY_STRICT:
4510 error = modify_flow_strict(ofproto, ofconn, fm, oh);
4514 error = delete_flows_loose(ofproto, ofconn, fm, oh);
4517 case OFPFC_DELETE_STRICT:
4518 error = delete_flow_strict(ofproto, ofconn, fm, oh);
4522 if (fm->command > 0xff) {
4523 VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but "
4524 "flow_mod_table_id extension is not enabled",
4527 error = OFPERR_OFPFMFC_BAD_COMMAND;
4531 ovs_assert(!list_is_empty(&ofproto->pending));
4532 error = OFPROTO_POSTPONE;
4534 ovs_mutex_unlock(&ofproto_mutex);
4536 run_rule_executes(ofproto);
4541 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
4543 struct ofputil_role_request request;
4544 struct ofputil_role_request reply;
4548 error = ofputil_decode_role_message(oh, &request);
4553 if (request.role != OFPCR12_ROLE_NOCHANGE) {
4554 if (ofconn_get_role(ofconn) != request.role
4555 && ofconn_has_pending_opgroups(ofconn)) {
4556 return OFPROTO_POSTPONE;
4559 if (request.have_generation_id
4560 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
4561 return OFPERR_OFPRRFC_STALE;
4564 ofconn_set_role(ofconn, request.role);
4567 reply.role = ofconn_get_role(ofconn);
4568 reply.have_generation_id = ofconn_get_master_election_id(
4569 ofconn, &reply.generation_id);
4570 buf = ofputil_encode_role_reply(oh, &reply);
4571 ofconn_send_reply(ofconn, buf);
4577 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
4578 const struct ofp_header *oh)
4580 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
4581 enum ofputil_protocol cur, next;
4583 cur = ofconn_get_protocol(ofconn);
4584 next = ofputil_protocol_set_tid(cur, msg->set != 0);
4585 ofconn_set_protocol(ofconn, next);
4591 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
4593 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
4594 enum ofputil_protocol cur, next;
4595 enum ofputil_protocol next_base;
4597 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
4599 return OFPERR_OFPBRC_EPERM;
4602 cur = ofconn_get_protocol(ofconn);
4603 next = ofputil_protocol_set_base(cur, next_base);
4604 if (cur != next && ofconn_has_pending_opgroups(ofconn)) {
4605 /* Avoid sending async messages in surprising protocol. */
4606 return OFPROTO_POSTPONE;
4609 ofconn_set_protocol(ofconn, next);
4614 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
4615 const struct ofp_header *oh)
4617 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
4620 format = ntohl(msg->format);
4621 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
4622 return OFPERR_OFPBRC_EPERM;
4625 if (format != ofconn_get_packet_in_format(ofconn)
4626 && ofconn_has_pending_opgroups(ofconn)) {
4627 /* Avoid sending async message in surprsing packet in format. */
4628 return OFPROTO_POSTPONE;
4631 ofconn_set_packet_in_format(ofconn, format);
4636 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
4638 const struct nx_async_config *msg = ofpmsg_body(oh);
4639 uint32_t master[OAM_N_TYPES];
4640 uint32_t slave[OAM_N_TYPES];
4642 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
4643 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
4644 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
4646 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
4647 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
4648 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
4650 ofconn_set_async_config(ofconn, master, slave);
4651 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
4652 !ofconn_get_miss_send_len(ofconn)) {
4653 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
4660 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
4663 uint32_t master[OAM_N_TYPES];
4664 uint32_t slave[OAM_N_TYPES];
4665 struct nx_async_config *msg;
4667 ofconn_get_async_config(ofconn, master, slave);
4668 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
4669 msg = ofpbuf_put_zeros(buf, sizeof *msg);
4671 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
4672 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
4673 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
4675 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
4676 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
4677 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
4679 ofconn_send_reply(ofconn, buf);
4685 handle_nxt_set_controller_id(struct ofconn *ofconn,
4686 const struct ofp_header *oh)
4688 const struct nx_controller_id *nci = ofpmsg_body(oh);
4690 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
4691 return OFPERR_NXBRC_MUST_BE_ZERO;
4694 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
4699 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
4703 if (ofconn_has_pending_opgroups(ofconn)) {
4704 return OFPROTO_POSTPONE;
4707 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
4708 ? OFPRAW_OFPT10_BARRIER_REPLY
4709 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
4710 ofconn_send_reply(ofconn, buf);
4715 ofproto_compose_flow_refresh_update(const struct rule *rule,
4716 enum nx_flow_monitor_flags flags,
4718 OVS_REQUIRES(ofproto_mutex)
4720 struct ofoperation *op = rule->pending;
4721 const struct rule_actions *actions;
4722 struct ofputil_flow_update fu;
4725 if (op && op->type == OFOPERATION_ADD) {
4726 /* We'll report the final flow when the operation completes. Reporting
4727 * it now would cause a duplicate report later. */
4731 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
4732 ? NXFME_ADDED : NXFME_MODIFIED);
4734 ovs_mutex_lock(&rule->mutex);
4735 fu.idle_timeout = rule->idle_timeout;
4736 fu.hard_timeout = rule->hard_timeout;
4737 ovs_mutex_unlock(&rule->mutex);
4738 fu.table_id = rule->table_id;
4739 fu.cookie = rule->flow_cookie;
4740 minimatch_expand(&rule->cr.match, &match);
4742 fu.priority = rule->cr.priority;
4744 if (!(flags & NXFMF_ACTIONS)) {
4747 actions = rule->actions;
4749 /* An operation is in progress. Use the previous version of the flow's
4750 * actions, so that when the operation commits we report the change. */
4752 case OFOPERATION_ADD:
4755 case OFOPERATION_MODIFY:
4756 case OFOPERATION_REPLACE:
4757 actions = op->actions ? op->actions : rule->actions;
4760 case OFOPERATION_DELETE:
4761 actions = rule->actions;
4768 fu.ofpacts = actions ? actions->ofpacts : NULL;
4769 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
4771 if (list_is_empty(msgs)) {
4772 ofputil_start_flow_update(msgs);
4774 ofputil_append_flow_update(&fu, msgs);
4778 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
4780 OVS_REQUIRES(ofproto_mutex)
4784 for (i = 0; i < rules->n; i++) {
4785 struct rule *rule = rules->rules[i];
4786 enum nx_flow_monitor_flags flags = rule->monitor_flags;
4787 rule->monitor_flags = 0;
4789 ofproto_compose_flow_refresh_update(rule, flags, msgs);
4794 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
4795 struct rule *rule, uint64_t seqno,
4796 struct rule_collection *rules)
4797 OVS_REQUIRES(ofproto_mutex)
4799 enum nx_flow_monitor_flags update;
4801 if (ofproto_rule_is_hidden(rule)) {
4806 ? ofoperation_has_out_port(rule->pending, m->out_port)
4807 : ofproto_rule_has_out_port(rule, m->out_port))) {
4812 if (rule->add_seqno > seqno) {
4813 update = NXFMF_ADD | NXFMF_MODIFY;
4814 } else if (rule->modify_seqno > seqno) {
4815 update = NXFMF_MODIFY;
4820 if (!(m->flags & update)) {
4824 update = NXFMF_INITIAL;
4827 if (!rule->monitor_flags) {
4828 rule_collection_add(rules, rule);
4830 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
4834 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
4836 struct rule_collection *rules)
4837 OVS_REQUIRES(ofproto_mutex)
4839 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
4840 const struct ofoperation *op;
4841 const struct oftable *table;
4842 struct cls_rule target;
4844 cls_rule_init_from_minimatch(&target, &m->match, 0);
4845 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
4846 struct cls_cursor cursor;
4849 fat_rwlock_rdlock(&table->cls.rwlock);
4850 cls_cursor_init(&cursor, &table->cls, &target);
4851 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
4852 ovs_assert(!rule->pending); /* XXX */
4853 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
4855 fat_rwlock_unlock(&table->cls.rwlock);
4858 HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) {
4859 struct rule *rule = op->rule;
4861 if (((m->table_id == 0xff
4862 ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN)
4863 : m->table_id == rule->table_id))
4864 && cls_rule_is_loose_match(&rule->cr, &target.match)) {
4865 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
4868 cls_rule_destroy(&target);
4872 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
4873 struct rule_collection *rules)
4874 OVS_REQUIRES(ofproto_mutex)
4876 if (m->flags & NXFMF_INITIAL) {
4877 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
4882 ofmonitor_collect_resume_rules(struct ofmonitor *m,
4883 uint64_t seqno, struct rule_collection *rules)
4884 OVS_REQUIRES(ofproto_mutex)
4886 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
4890 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
4891 OVS_EXCLUDED(ofproto_mutex)
4893 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4894 struct ofmonitor **monitors;
4895 size_t n_monitors, allocated_monitors;
4896 struct rule_collection rules;
4897 struct list replies;
4903 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4905 n_monitors = allocated_monitors = 0;
4907 ovs_mutex_lock(&ofproto_mutex);
4909 struct ofputil_flow_monitor_request request;
4910 struct ofmonitor *m;
4913 retval = ofputil_decode_flow_monitor_request(&request, &b);
4914 if (retval == EOF) {
4916 } else if (retval) {
4921 if (request.table_id != 0xff
4922 && request.table_id >= ofproto->n_tables) {
4923 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4927 error = ofmonitor_create(&request, ofconn, &m);
4932 if (n_monitors >= allocated_monitors) {
4933 monitors = x2nrealloc(monitors, &allocated_monitors,
4936 monitors[n_monitors++] = m;
4939 rule_collection_init(&rules);
4940 for (i = 0; i < n_monitors; i++) {
4941 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
4944 ofpmp_init(&replies, oh);
4945 ofmonitor_compose_refresh_updates(&rules, &replies);
4946 ovs_mutex_unlock(&ofproto_mutex);
4948 rule_collection_destroy(&rules);
4950 ofconn_send_replies(ofconn, &replies);
4956 for (i = 0; i < n_monitors; i++) {
4957 ofmonitor_destroy(monitors[i]);
4960 ovs_mutex_unlock(&ofproto_mutex);
4966 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
4967 OVS_EXCLUDED(ofproto_mutex)
4969 struct ofmonitor *m;
4973 id = ofputil_decode_flow_monitor_cancel(oh);
4975 ovs_mutex_lock(&ofproto_mutex);
4976 m = ofmonitor_lookup(ofconn, id);
4978 ofmonitor_destroy(m);
4981 error = OFPERR_NXBRC_FM_BAD_ID;
4983 ovs_mutex_unlock(&ofproto_mutex);
4988 /* Meters implementation.
4990 * Meter table entry, indexed by the OpenFlow meter_id.
4991 * These are always dynamically allocated to allocate enough space for
4993 * 'created' is used to compute the duration for meter stats.
4994 * 'list rules' is needed so that we can delete the dependent rules when the
4995 * meter table entry is deleted.
4996 * 'provider_meter_id' is for the provider's private use.
4999 long long int created; /* Time created. */
5000 struct list rules; /* List of "struct rule_dpif"s. */
5001 ofproto_meter_id provider_meter_id;
5002 uint16_t flags; /* Meter flags. */
5003 uint16_t n_bands; /* Number of meter bands. */
5004 struct ofputil_meter_band *bands;
5008 * This is used in instruction validation at flow set-up time,
5009 * as flows may not use non-existing meters.
5010 * Return value of UINT32_MAX signifies an invalid meter.
5013 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
5015 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5016 const struct meter *meter = ofproto->meters[of_meter_id];
5018 return meter->provider_meter_id.uint32;
5025 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5029 meter->flags = config->flags;
5030 meter->n_bands = config->n_bands;
5031 meter->bands = xmemdup(config->bands,
5032 config->n_bands * sizeof *meter->bands);
5035 static struct meter *
5036 meter_create(const struct ofputil_meter_config *config,
5037 ofproto_meter_id provider_meter_id)
5039 struct meter *meter;
5041 meter = xzalloc(sizeof *meter);
5042 meter->provider_meter_id = provider_meter_id;
5043 meter->created = time_msec();
5044 list_init(&meter->rules);
5046 meter_update(meter, config);
5052 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5053 OVS_REQUIRES(ofproto_mutex)
5056 for (mid = first; mid <= last; ++mid) {
5057 struct meter *meter = ofproto->meters[mid];
5059 ofproto->meters[mid] = NULL;
5060 ofproto->ofproto_class->meter_del(ofproto,
5061 meter->provider_meter_id);
5069 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5071 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5072 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5076 return OFPERR_OFPMMFC_METER_EXISTS;
5079 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5082 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5083 *meterp = meter_create(&mm->meter, provider_meter_id);
5089 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5091 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5093 uint32_t provider_meter_id;
5096 return OFPERR_OFPMMFC_UNKNOWN_METER;
5099 provider_meter_id = meter->provider_meter_id.uint32;
5100 error = ofproto->ofproto_class->meter_set(ofproto,
5101 &meter->provider_meter_id,
5103 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5105 meter_update(meter, &mm->meter);
5111 handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh,
5112 struct ofputil_meter_mod *mm)
5113 OVS_EXCLUDED(ofproto_mutex)
5115 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5116 uint32_t meter_id = mm->meter.meter_id;
5117 struct rule_collection rules;
5118 enum ofperr error = 0;
5119 uint32_t first, last;
5121 if (meter_id == OFPM13_ALL) {
5123 last = ofproto->meter_features.max_meters;
5125 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5128 first = last = meter_id;
5131 /* First delete the rules that use this meter. If any of those rules are
5132 * currently being modified, postpone the whole operation until later. */
5133 rule_collection_init(&rules);
5134 ovs_mutex_lock(&ofproto_mutex);
5135 for (meter_id = first; meter_id <= last; ++meter_id) {
5136 struct meter *meter = ofproto->meters[meter_id];
5137 if (meter && !list_is_empty(&meter->rules)) {
5140 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5141 if (rule->pending) {
5142 error = OFPROTO_POSTPONE;
5145 rule_collection_add(&rules, rule);
5150 delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE);
5153 /* Delete the meters. */
5154 meter_delete(ofproto, first, last);
5157 ovs_mutex_unlock(&ofproto_mutex);
5158 rule_collection_destroy(&rules);
5164 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5166 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5167 struct ofputil_meter_mod mm;
5168 uint64_t bands_stub[256 / 8];
5169 struct ofpbuf bands;
5173 error = reject_slave_controller(ofconn);
5178 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5180 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5182 goto exit_free_bands;
5185 meter_id = mm.meter.meter_id;
5187 if (mm.command != OFPMC13_DELETE) {
5188 /* Fails also when meters are not implemented by the provider. */
5189 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5190 error = OFPERR_OFPMMFC_INVALID_METER;
5191 goto exit_free_bands;
5192 } else if (meter_id > ofproto->meter_features.max_meters) {
5193 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5194 goto exit_free_bands;
5196 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5197 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5198 goto exit_free_bands;
5202 switch (mm.command) {
5204 error = handle_add_meter(ofproto, &mm);
5207 case OFPMC13_MODIFY:
5208 error = handle_modify_meter(ofproto, &mm);
5211 case OFPMC13_DELETE:
5212 error = handle_delete_meter(ofconn, oh, &mm);
5216 error = OFPERR_OFPMMFC_BAD_COMMAND;
5221 ofpbuf_uninit(&bands);
5226 handle_meter_features_request(struct ofconn *ofconn,
5227 const struct ofp_header *request)
5229 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5230 struct ofputil_meter_features features;
5233 if (ofproto->ofproto_class->meter_get_features) {
5234 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5236 memset(&features, 0, sizeof features);
5238 b = ofputil_encode_meter_features_reply(&features, request);
5240 ofconn_send_reply(ofconn, b);
5245 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5248 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5249 struct list replies;
5250 uint64_t bands_stub[256 / 8];
5251 struct ofpbuf bands;
5252 uint32_t meter_id, first, last;
5254 ofputil_decode_meter_request(request, &meter_id);
5256 if (meter_id == OFPM13_ALL) {
5258 last = ofproto->meter_features.max_meters;
5260 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5261 !ofproto->meters[meter_id]) {
5262 return OFPERR_OFPMMFC_UNKNOWN_METER;
5264 first = last = meter_id;
5267 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5268 ofpmp_init(&replies, request);
5270 for (meter_id = first; meter_id <= last; ++meter_id) {
5271 struct meter *meter = ofproto->meters[meter_id];
5273 continue; /* Skip non-existing meters. */
5275 if (type == OFPTYPE_METER_STATS_REQUEST) {
5276 struct ofputil_meter_stats stats;
5278 stats.meter_id = meter_id;
5280 /* Provider sets the packet and byte counts, we do the rest. */
5281 stats.flow_count = list_size(&meter->rules);
5282 calc_duration(meter->created, time_msec(),
5283 &stats.duration_sec, &stats.duration_nsec);
5284 stats.n_bands = meter->n_bands;
5285 ofpbuf_clear(&bands);
5287 = ofpbuf_put_uninit(&bands,
5288 meter->n_bands * sizeof *stats.bands);
5290 if (!ofproto->ofproto_class->meter_get(ofproto,
5291 meter->provider_meter_id,
5293 ofputil_append_meter_stats(&replies, &stats);
5295 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5296 struct ofputil_meter_config config;
5298 config.meter_id = meter_id;
5299 config.flags = meter->flags;
5300 config.n_bands = meter->n_bands;
5301 config.bands = meter->bands;
5302 ofputil_append_meter_config(&replies, &config);
5306 ofconn_send_replies(ofconn, &replies);
5307 ofpbuf_uninit(&bands);
5312 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5313 struct ofgroup **group)
5314 OVS_TRY_RDLOCK(true, (*group)->rwlock)
5316 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5317 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5318 hash_int(group_id, 0), &ofproto->groups) {
5319 if ((*group)->group_id == group_id) {
5320 ovs_rwlock_rdlock(&(*group)->rwlock);
5321 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5325 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5330 ofproto_group_release(struct ofgroup *group)
5331 OVS_RELEASES(group->rwlock)
5333 ovs_rwlock_unlock(&group->rwlock);
5337 ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id,
5338 struct ofgroup **group)
5339 OVS_TRY_WRLOCK(true, ofproto->groups_rwlock)
5340 OVS_TRY_WRLOCK(true, (*group)->rwlock)
5342 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5343 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5344 hash_int(group_id, 0), &ofproto->groups) {
5345 if ((*group)->group_id == group_id) {
5346 ovs_rwlock_wrlock(&(*group)->rwlock);
5350 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5355 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
5356 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5358 struct ofgroup *grp;
5360 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5361 hash_int(group_id, 0), &ofproto->groups) {
5362 if (grp->group_id == group_id) {
5370 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5371 OVS_EXCLUDED(ofproto->groups_rwlock)
5375 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5376 exists = ofproto_group_exists__(ofproto, group_id);
5377 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5383 group_get_ref_count(struct ofgroup *group)
5384 OVS_EXCLUDED(ofproto_mutex)
5386 struct ofproto *ofproto = group->ofproto;
5387 struct rule_criteria criteria;
5388 struct rule_collection rules;
5393 match_init_catchall(&match);
5394 rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0),
5395 OFPP_ANY, group->group_id);
5396 ovs_mutex_lock(&ofproto_mutex);
5397 error = collect_rules_loose(ofproto, &criteria, &rules);
5398 ovs_mutex_unlock(&ofproto_mutex);
5399 rule_criteria_destroy(&criteria);
5401 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
5403 rule_collection_destroy(&rules);
5408 append_group_stats(struct ofgroup *group, struct list *replies)
5409 OVS_REQ_RDLOCK(group->rwlock)
5411 struct ofputil_group_stats ogs;
5412 struct ofproto *ofproto = group->ofproto;
5413 long long int now = time_msec();
5416 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
5418 /* Provider sets the packet and byte counts, we do the rest. */
5419 ogs.ref_count = group_get_ref_count(group);
5420 ogs.n_buckets = group->n_buckets;
5422 error = (ofproto->ofproto_class->group_get_stats
5423 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
5426 ogs.packet_count = UINT64_MAX;
5427 ogs.byte_count = UINT64_MAX;
5428 memset(ogs.bucket_stats, 0xff,
5429 ogs.n_buckets * sizeof *ogs.bucket_stats);
5432 ogs.group_id = group->group_id;
5433 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
5435 ofputil_append_group_stats(replies, &ogs);
5437 free(ogs.bucket_stats);
5441 handle_group_stats_request(struct ofconn *ofconn,
5442 const struct ofp_header *request)
5444 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5445 struct list replies;
5447 struct ofgroup *group;
5450 error = ofputil_decode_group_stats_request(request, &group_id);
5455 ofpmp_init(&replies, request);
5457 if (group_id == OFPG_ALL) {
5458 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5459 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5460 ovs_rwlock_rdlock(&group->rwlock);
5461 append_group_stats(group, &replies);
5462 ovs_rwlock_unlock(&group->rwlock);
5464 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5466 if (ofproto_group_lookup(ofproto, group_id, &group)) {
5467 append_group_stats(group, &replies);
5468 ofproto_group_release(group);
5472 ofconn_send_replies(ofconn, &replies);
5478 handle_group_desc_stats_request(struct ofconn *ofconn,
5479 const struct ofp_header *request)
5481 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5482 struct list replies;
5483 struct ofputil_group_desc gds;
5484 struct ofgroup *group;
5486 ofpmp_init(&replies, request);
5488 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5489 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5490 gds.group_id = group->group_id;
5491 gds.type = group->type;
5492 ofputil_append_group_desc_reply(&gds, &group->buckets, &replies);
5494 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5496 ofconn_send_replies(ofconn, &replies);
5502 handle_group_features_stats_request(struct ofconn *ofconn,
5503 const struct ofp_header *request)
5505 struct ofproto *p = ofconn_get_ofproto(ofconn);
5508 msg = ofputil_encode_group_features_reply(&p->ogf, request);
5510 ofconn_send_reply(ofconn, msg);
5517 handle_queue_get_config_request(struct ofconn *ofconn,
5518 const struct ofp_header *oh)
5520 struct ofproto *p = ofconn_get_ofproto(ofconn);
5521 struct netdev_queue_dump queue_dump;
5522 struct ofport *ofport;
5523 unsigned int queue_id;
5524 struct ofpbuf *reply;
5525 struct smap details;
5529 error = ofputil_decode_queue_get_config_request(oh, &request);
5534 ofport = ofproto_get_port(p, request);
5536 return OFPERR_OFPQOFC_BAD_PORT;
5539 reply = ofputil_encode_queue_get_config_reply(oh);
5541 smap_init(&details);
5542 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
5543 struct ofputil_queue_config queue;
5545 /* None of the existing queues have compatible properties, so we
5546 * hard-code omitting min_rate and max_rate. */
5547 queue.queue_id = queue_id;
5548 queue.min_rate = UINT16_MAX;
5549 queue.max_rate = UINT16_MAX;
5550 ofputil_append_queue_get_config_reply(reply, &queue);
5552 smap_destroy(&details);
5554 ofconn_send_reply(ofconn, reply);
5559 /* Implements OFPGC11_ADD
5560 * in which no matching flow already exists in the flow table.
5562 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
5563 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
5564 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
5565 * initiated now but may be retried later.
5567 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
5568 * ownership remains with the caller.
5570 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
5573 add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5575 struct ofgroup *ofgroup;
5578 if (gm->group_id > OFPG_MAX) {
5579 return OFPERR_OFPGMFC_INVALID_GROUP;
5581 if (gm->type > OFPGT11_FF) {
5582 return OFPERR_OFPGMFC_BAD_TYPE;
5585 /* Allocate new group and initialize it. */
5586 ofgroup = ofproto->ofproto_class->group_alloc();
5588 VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name);
5589 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5592 ovs_rwlock_init(&ofgroup->rwlock);
5593 ofgroup->ofproto = ofproto;
5594 ofgroup->group_id = gm->group_id;
5595 ofgroup->type = gm->type;
5596 ofgroup->created = ofgroup->modified = time_msec();
5598 list_move(&ofgroup->buckets, &gm->buckets);
5599 ofgroup->n_buckets = list_size(&ofgroup->buckets);
5601 /* Construct called BEFORE any locks are held. */
5602 error = ofproto->ofproto_class->group_construct(ofgroup);
5607 /* We wrlock as late as possible to minimize the time we jam any other
5608 * threads: No visible state changes before acquiring the lock. */
5609 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5611 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5612 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5616 if (ofproto_group_exists__(ofproto, gm->group_id)) {
5617 error = OFPERR_OFPGMFC_GROUP_EXISTS;
5622 /* Insert new group. */
5623 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
5624 hash_int(ofgroup->group_id, 0));
5625 ofproto->n_groups[ofgroup->type]++;
5627 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5632 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5633 ofproto->ofproto_class->group_destruct(ofgroup);
5635 ofputil_bucket_list_destroy(&ofgroup->buckets);
5636 ofproto->ofproto_class->group_dealloc(ofgroup);
5641 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
5644 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
5647 modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5649 struct ofgroup *ofgroup;
5650 struct ofgroup *victim;
5653 if (gm->group_id > OFPG_MAX) {
5654 return OFPERR_OFPGMFC_INVALID_GROUP;
5657 if (gm->type > OFPGT11_FF) {
5658 return OFPERR_OFPGMFC_BAD_TYPE;
5661 victim = ofproto->ofproto_class->group_alloc();
5663 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
5664 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5667 if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) {
5668 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
5671 /* Both group's and its container's write locks held now.
5672 * Also, n_groups[] is protected by ofproto->groups_rwlock. */
5673 if (ofgroup->type != gm->type
5674 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5675 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5680 list_move(&victim->buckets, &ofgroup->buckets);
5682 ofgroup->type = gm->type;
5683 list_move(&ofgroup->buckets, &gm->buckets);
5684 ofgroup->n_buckets = list_size(&ofgroup->buckets);
5686 error = ofproto->ofproto_class->group_modify(ofgroup, victim);
5688 ofputil_bucket_list_destroy(&victim->buckets);
5689 ofproto->n_groups[victim->type]--;
5690 ofproto->n_groups[ofgroup->type]++;
5691 ofgroup->modified = time_msec();
5693 ofputil_bucket_list_destroy(&ofgroup->buckets);
5696 list_move(&ofgroup->buckets, &victim->buckets);
5700 ovs_rwlock_unlock(&ofgroup->rwlock);
5701 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5703 ofproto->ofproto_class->group_dealloc(victim);
5708 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
5709 OVS_RELEASES(ofproto->groups_rwlock)
5712 struct ofputil_flow_mod fm;
5714 /* Delete all flow entries containing this group in a group action */
5715 match_init_catchall(&match);
5716 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
5717 fm.out_group = ofgroup->group_id;
5718 handle_flow_mod__(ofproto, NULL, &fm, NULL);
5720 /* Must wait until existing readers are done,
5721 * while holding the container's write lock at the same time. */
5722 ovs_rwlock_wrlock(&ofgroup->rwlock);
5723 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
5724 /* No-one can find this group any more. */
5725 ofproto->n_groups[ofgroup->type]--;
5726 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5728 ofproto->ofproto_class->group_destruct(ofgroup);
5729 ofputil_bucket_list_destroy(&ofgroup->buckets);
5730 ovs_rwlock_unlock(&ofgroup->rwlock);
5731 ovs_rwlock_destroy(&ofgroup->rwlock);
5732 ofproto->ofproto_class->group_dealloc(ofgroup);
5735 /* Implements OFPGC_DELETE. */
5737 delete_group(struct ofproto *ofproto, uint32_t group_id)
5739 struct ofgroup *ofgroup;
5741 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5742 if (group_id == OFPG_ALL) {
5744 struct hmap_node *node = hmap_first(&ofproto->groups);
5748 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
5749 delete_group__(ofproto, ofgroup);
5750 /* Lock for each node separately, so that we will not jam the
5751 * other threads for too long time. */
5752 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5755 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
5756 hash_int(group_id, 0), &ofproto->groups) {
5757 if (ofgroup->group_id == group_id) {
5758 delete_group__(ofproto, ofgroup);
5763 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5767 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5769 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5770 struct ofputil_group_mod gm;
5773 error = reject_slave_controller(ofconn);
5778 error = ofputil_decode_group_mod(oh, &gm);
5783 switch (gm.command) {
5785 return add_group(ofproto, &gm);
5787 case OFPGC11_MODIFY:
5788 return modify_group(ofproto, &gm);
5790 case OFPGC11_DELETE:
5791 delete_group(ofproto, gm.group_id);
5795 if (gm.command > OFPGC11_DELETE) {
5796 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
5797 ofproto->name, gm.command);
5799 return OFPERR_OFPGMFC_BAD_COMMAND;
5804 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
5806 /* XXX Reject all configurations because none are currently supported */
5807 return OFPERR_OFPTMFC_BAD_CONFIG;
5809 if (tm->table_id == OFPTT_ALL) {
5811 for (i = 0; i < ofproto->n_tables; i++) {
5812 atomic_store(&ofproto->tables[i].config,
5813 (unsigned int)tm->config);
5815 } else if (!check_table_id(ofproto, tm->table_id)) {
5816 return OFPERR_OFPTMFC_BAD_TABLE;
5818 atomic_store(&ofproto->tables[tm->table_id].config,
5819 (unsigned int)tm->config);
5826 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5828 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5829 struct ofputil_table_mod tm;
5832 error = reject_slave_controller(ofconn);
5837 error = ofputil_decode_table_mod(oh, &tm);
5842 return table_mod(ofproto, &tm);
5846 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
5847 OVS_EXCLUDED(ofproto_mutex)
5849 const struct ofp_header *oh = msg->data;
5853 error = ofptype_decode(&type, oh);
5857 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
5858 && ofpmp_more(oh)) {
5859 /* We have no buffer implementation for multipart requests.
5860 * Report overflow for requests which consists of multiple
5862 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
5866 /* OpenFlow requests. */
5867 case OFPTYPE_ECHO_REQUEST:
5868 return handle_echo_request(ofconn, oh);
5870 case OFPTYPE_FEATURES_REQUEST:
5871 return handle_features_request(ofconn, oh);
5873 case OFPTYPE_GET_CONFIG_REQUEST:
5874 return handle_get_config_request(ofconn, oh);
5876 case OFPTYPE_SET_CONFIG:
5877 return handle_set_config(ofconn, oh);
5879 case OFPTYPE_PACKET_OUT:
5880 return handle_packet_out(ofconn, oh);
5882 case OFPTYPE_PORT_MOD:
5883 return handle_port_mod(ofconn, oh);
5885 case OFPTYPE_FLOW_MOD:
5886 return handle_flow_mod(ofconn, oh);
5888 case OFPTYPE_GROUP_MOD:
5889 return handle_group_mod(ofconn, oh);
5891 case OFPTYPE_TABLE_MOD:
5892 return handle_table_mod(ofconn, oh);
5894 case OFPTYPE_METER_MOD:
5895 return handle_meter_mod(ofconn, oh);
5897 case OFPTYPE_BARRIER_REQUEST:
5898 return handle_barrier_request(ofconn, oh);
5900 case OFPTYPE_ROLE_REQUEST:
5901 return handle_role_request(ofconn, oh);
5903 /* OpenFlow replies. */
5904 case OFPTYPE_ECHO_REPLY:
5907 /* Nicira extension requests. */
5908 case OFPTYPE_FLOW_MOD_TABLE_ID:
5909 return handle_nxt_flow_mod_table_id(ofconn, oh);
5911 case OFPTYPE_SET_FLOW_FORMAT:
5912 return handle_nxt_set_flow_format(ofconn, oh);
5914 case OFPTYPE_SET_PACKET_IN_FORMAT:
5915 return handle_nxt_set_packet_in_format(ofconn, oh);
5917 case OFPTYPE_SET_CONTROLLER_ID:
5918 return handle_nxt_set_controller_id(ofconn, oh);
5920 case OFPTYPE_FLOW_AGE:
5921 /* Nothing to do. */
5924 case OFPTYPE_FLOW_MONITOR_CANCEL:
5925 return handle_flow_monitor_cancel(ofconn, oh);
5927 case OFPTYPE_SET_ASYNC_CONFIG:
5928 return handle_nxt_set_async_config(ofconn, oh);
5930 case OFPTYPE_GET_ASYNC_REQUEST:
5931 return handle_nxt_get_async_request(ofconn, oh);
5933 /* Statistics requests. */
5934 case OFPTYPE_DESC_STATS_REQUEST:
5935 return handle_desc_stats_request(ofconn, oh);
5937 case OFPTYPE_FLOW_STATS_REQUEST:
5938 return handle_flow_stats_request(ofconn, oh);
5940 case OFPTYPE_AGGREGATE_STATS_REQUEST:
5941 return handle_aggregate_stats_request(ofconn, oh);
5943 case OFPTYPE_TABLE_STATS_REQUEST:
5944 return handle_table_stats_request(ofconn, oh);
5946 case OFPTYPE_PORT_STATS_REQUEST:
5947 return handle_port_stats_request(ofconn, oh);
5949 case OFPTYPE_QUEUE_STATS_REQUEST:
5950 return handle_queue_stats_request(ofconn, oh);
5952 case OFPTYPE_PORT_DESC_STATS_REQUEST:
5953 return handle_port_desc_stats_request(ofconn, oh);
5955 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
5956 return handle_flow_monitor_request(ofconn, oh);
5958 case OFPTYPE_METER_STATS_REQUEST:
5959 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
5960 return handle_meter_request(ofconn, oh, type);
5962 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
5963 return handle_meter_features_request(ofconn, oh);
5965 case OFPTYPE_GROUP_STATS_REQUEST:
5966 return handle_group_stats_request(ofconn, oh);
5968 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
5969 return handle_group_desc_stats_request(ofconn, oh);
5971 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
5972 return handle_group_features_stats_request(ofconn, oh);
5974 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
5975 return handle_queue_get_config_request(ofconn, oh);
5979 case OFPTYPE_FEATURES_REPLY:
5980 case OFPTYPE_GET_CONFIG_REPLY:
5981 case OFPTYPE_PACKET_IN:
5982 case OFPTYPE_FLOW_REMOVED:
5983 case OFPTYPE_PORT_STATUS:
5984 case OFPTYPE_BARRIER_REPLY:
5985 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
5986 case OFPTYPE_DESC_STATS_REPLY:
5987 case OFPTYPE_FLOW_STATS_REPLY:
5988 case OFPTYPE_QUEUE_STATS_REPLY:
5989 case OFPTYPE_PORT_STATS_REPLY:
5990 case OFPTYPE_TABLE_STATS_REPLY:
5991 case OFPTYPE_AGGREGATE_STATS_REPLY:
5992 case OFPTYPE_PORT_DESC_STATS_REPLY:
5993 case OFPTYPE_ROLE_REPLY:
5994 case OFPTYPE_FLOW_MONITOR_PAUSED:
5995 case OFPTYPE_FLOW_MONITOR_RESUMED:
5996 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
5997 case OFPTYPE_GET_ASYNC_REPLY:
5998 case OFPTYPE_GROUP_STATS_REPLY:
5999 case OFPTYPE_GROUP_DESC_STATS_REPLY:
6000 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
6001 case OFPTYPE_METER_STATS_REPLY:
6002 case OFPTYPE_METER_CONFIG_STATS_REPLY:
6003 case OFPTYPE_METER_FEATURES_STATS_REPLY:
6004 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
6005 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
6006 case OFPTYPE_ROLE_STATUS:
6008 if (ofpmsg_is_stat_request(oh)) {
6009 return OFPERR_OFPBRC_BAD_STAT;
6011 return OFPERR_OFPBRC_BAD_TYPE;
6017 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
6018 OVS_EXCLUDED(ofproto_mutex)
6020 int error = handle_openflow__(ofconn, ofp_msg);
6021 if (error && error != OFPROTO_POSTPONE) {
6022 ofconn_send_error(ofconn, ofp_msg->data, error);
6024 COVERAGE_INC(ofproto_recv_openflow);
6025 return error != OFPROTO_POSTPONE;
6028 /* Asynchronous operations. */
6030 /* Creates and returns a new ofopgroup that is not associated with any
6031 * OpenFlow connection.
6033 * The caller should add operations to the returned group with
6034 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6035 static struct ofopgroup *
6036 ofopgroup_create_unattached(struct ofproto *ofproto)
6037 OVS_REQUIRES(ofproto_mutex)
6039 struct ofopgroup *group = xzalloc(sizeof *group);
6040 group->ofproto = ofproto;
6041 list_init(&group->ofproto_node);
6042 list_init(&group->ops);
6043 list_init(&group->ofconn_node);
6047 /* Creates and returns a new ofopgroup for 'ofproto'.
6049 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
6050 * connection. The 'request' and 'buffer_id' arguments are ignored.
6052 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
6053 * If the ofopgroup eventually fails, then the error reply will include
6054 * 'request'. If the ofopgroup eventually succeeds, then the packet with
6055 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
6057 * The caller should add operations to the returned group with
6058 * ofoperation_create() and then submit it with ofopgroup_submit(). */
6059 static struct ofopgroup *
6060 ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn,
6061 const struct ofp_header *request, uint32_t buffer_id)
6062 OVS_REQUIRES(ofproto_mutex)
6064 struct ofopgroup *group = ofopgroup_create_unattached(ofproto);
6066 size_t request_len = ntohs(request->length);
6068 ovs_assert(ofconn_get_ofproto(ofconn) == ofproto);
6070 ofconn_add_opgroup(ofconn, &group->ofconn_node);
6071 group->ofconn = ofconn;
6072 group->request = xmemdup(request, MIN(request_len, 64));
6073 group->buffer_id = buffer_id;
6078 /* Submits 'group' for processing.
6080 * If 'group' contains no operations (e.g. none were ever added, or all of the
6081 * ones that were added completed synchronously), then it is destroyed
6082 * immediately. Otherwise it is added to the ofproto's list of pending
6085 ofopgroup_submit(struct ofopgroup *group)
6086 OVS_REQUIRES(ofproto_mutex)
6088 if (!group->n_running) {
6089 ofopgroup_complete(group);
6091 list_push_back(&group->ofproto->pending, &group->ofproto_node);
6092 group->ofproto->n_pending++;
6097 ofopgroup_complete(struct ofopgroup *group)
6098 OVS_REQUIRES(ofproto_mutex)
6100 struct ofproto *ofproto = group->ofproto;
6102 struct ofconn *abbrev_ofconn;
6103 ovs_be32 abbrev_xid;
6105 struct ofoperation *op, *next_op;
6108 ovs_assert(!group->n_running);
6111 LIST_FOR_EACH (op, group_node, &group->ops) {
6118 if (!error && group->ofconn && group->buffer_id != UINT32_MAX) {
6119 LIST_FOR_EACH (op, group_node, &group->ops) {
6120 if (op->type != OFOPERATION_DELETE) {
6121 struct ofpbuf *packet;
6124 error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id,
6127 struct rule_execute *re;
6131 ofproto_rule_ref(op->rule);
6133 re = xmalloc(sizeof *re);
6134 re->rule = op->rule;
6135 re->in_port = in_port;
6136 re->packet = packet;
6138 if (!guarded_list_push_back(&ofproto->rule_executes,
6139 &re->list_node, 1024)) {
6140 ofproto_rule_unref(op->rule);
6141 ofpbuf_delete(re->packet);
6150 if (!error && !list_is_empty(&group->ofconn_node)) {
6151 abbrev_ofconn = group->ofconn;
6152 abbrev_xid = group->request->xid;
6154 abbrev_ofconn = NULL;
6155 abbrev_xid = htonl(0);
6157 LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) {
6158 struct rule *rule = op->rule;
6160 /* We generally want to report the change to active OpenFlow flow
6161 monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions:
6163 - The operation failed.
6165 - The affected rule is not visible to controllers.
6167 - The operation's only effect was to update rule->modified. */
6169 || ofproto_rule_is_hidden(rule)
6170 || (op->type == OFOPERATION_MODIFY
6172 && rule->flow_cookie == op->flow_cookie))) {
6173 /* Check that we can just cast from ofoperation_type to
6174 * nx_flow_update_event. */
6175 enum nx_flow_update_event event_type;
6178 case OFOPERATION_ADD:
6179 case OFOPERATION_REPLACE:
6180 event_type = NXFME_ADDED;
6183 case OFOPERATION_DELETE:
6184 event_type = NXFME_DELETED;
6187 case OFOPERATION_MODIFY:
6188 event_type = NXFME_MODIFIED;
6195 ofmonitor_report(ofproto->connmgr, rule, event_type,
6196 op->reason, abbrev_ofconn, abbrev_xid);
6199 rule->pending = NULL;
6202 case OFOPERATION_ADD:
6206 vid_mask = minimask_get_vid_mask(&rule->cr.match.mask);
6207 if (vid_mask == VLAN_VID_MASK) {
6208 if (ofproto->vlan_bitmap) {
6209 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
6210 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
6211 bitmap_set1(ofproto->vlan_bitmap, vid);
6212 ofproto->vlans_changed = true;
6215 ofproto->vlans_changed = true;
6219 oftable_remove_rule(rule);
6220 ofproto_rule_unref(rule);
6224 case OFOPERATION_DELETE:
6225 ovs_assert(!op->error);
6226 ofproto_rule_unref(rule);
6230 case OFOPERATION_MODIFY:
6231 case OFOPERATION_REPLACE:
6233 long long int now = time_msec();
6235 ovs_mutex_lock(&rule->mutex);
6236 rule->modified = now;
6237 if (op->type == OFOPERATION_REPLACE) {
6238 rule->created = rule->used = now;
6240 ovs_mutex_unlock(&rule->mutex);
6242 ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie);
6243 ovs_mutex_lock(&rule->mutex);
6244 rule->idle_timeout = op->idle_timeout;
6245 rule->hard_timeout = op->hard_timeout;
6246 ovs_mutex_unlock(&rule->mutex);
6248 struct rule_actions *old_actions;
6250 ovs_mutex_lock(&rule->mutex);
6251 old_actions = rule->actions;
6252 rule->actions = op->actions;
6253 ovs_mutex_unlock(&rule->mutex);
6256 rule_actions_unref(old_actions);
6258 rule->flags = op->flags;
6266 ofoperation_destroy(op);
6269 ofmonitor_flush(ofproto->connmgr);
6271 if (!list_is_empty(&group->ofproto_node)) {
6272 ovs_assert(ofproto->n_pending > 0);
6273 ofproto->n_pending--;
6274 list_remove(&group->ofproto_node);
6276 if (!list_is_empty(&group->ofconn_node)) {
6277 list_remove(&group->ofconn_node);
6279 ofconn_send_error(group->ofconn, group->request, error);
6281 connmgr_retry(ofproto->connmgr);
6283 free(group->request);
6287 /* Initiates a new operation on 'rule', of the specified 'type', within
6288 * 'group'. Prior to calling, 'rule' must not have any pending operation.
6290 * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that
6291 * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0).
6293 * Returns the newly created ofoperation (which is also available as
6294 * rule->pending). */
6295 static struct ofoperation *
6296 ofoperation_create(struct ofopgroup *group, struct rule *rule,
6297 enum ofoperation_type type,
6298 enum ofp_flow_removed_reason reason)
6299 OVS_REQUIRES(ofproto_mutex)
6301 struct ofproto *ofproto = group->ofproto;
6302 struct ofoperation *op;
6304 ovs_assert(!rule->pending);
6306 op = rule->pending = xzalloc(sizeof *op);
6308 list_push_back(&group->ops, &op->group_node);
6311 op->reason = reason;
6312 op->flow_cookie = rule->flow_cookie;
6313 ovs_mutex_lock(&rule->mutex);
6314 op->idle_timeout = rule->idle_timeout;
6315 op->hard_timeout = rule->hard_timeout;
6316 ovs_mutex_unlock(&rule->mutex);
6317 op->flags = rule->flags;
6321 if (type == OFOPERATION_DELETE) {
6322 hmap_insert(&ofproto->deletions, &op->hmap_node,
6323 cls_rule_hash(&rule->cr, rule->table_id));
6330 ofoperation_destroy(struct ofoperation *op)
6331 OVS_REQUIRES(ofproto_mutex)
6333 struct ofopgroup *group = op->group;
6336 op->rule->pending = NULL;
6338 if (op->type == OFOPERATION_DELETE) {
6339 hmap_remove(&group->ofproto->deletions, &op->hmap_node);
6341 list_remove(&op->group_node);
6342 rule_actions_unref(op->actions);
6346 /* Indicates that 'op' completed with status 'error', which is either 0 to
6347 * indicate success or an OpenFlow error code on failure.
6349 * If 'error' is 0, indicating success, the operation will be committed
6350 * permanently to the flow table.
6352 * If 'error' is nonzero, then generally the operation will be rolled back:
6354 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
6355 * restores the original rule. The caller must have uninitialized any
6356 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
6357 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
6358 * and 7 for the new rule, calling its ->rule_dealloc() function.
6360 * - If 'op' is a "modify flow" operation, ofproto restores the original
6363 * - 'op' must not be a "delete flow" operation. Removing a rule is not
6364 * allowed to fail. It must always succeed.
6366 * Please see the large comment in ofproto/ofproto-provider.h titled
6367 * "Asynchronous Operation Support" for more information. */
6369 ofoperation_complete(struct ofoperation *op, enum ofperr error)
6371 struct ofopgroup *group = op->group;
6373 ovs_assert(group->n_running > 0);
6374 ovs_assert(!error || op->type != OFOPERATION_DELETE);
6377 if (!--group->n_running && !list_is_empty(&group->ofproto_node)) {
6378 /* This function can be called from ->rule_construct(), in which case
6379 * ofproto_mutex is held, or it can be called from ->run(), in which
6380 * case ofproto_mutex is not held. But only in the latter case can we
6381 * arrive here, so we can safely take ofproto_mutex now. */
6382 ovs_mutex_lock(&ofproto_mutex);
6383 ovs_assert(op->rule->pending == op);
6384 ofopgroup_complete(group);
6385 ovs_mutex_unlock(&ofproto_mutex);
6390 pick_datapath_id(const struct ofproto *ofproto)
6392 const struct ofport *port;
6394 port = ofproto_get_port(ofproto, OFPP_LOCAL);
6396 uint8_t ea[ETH_ADDR_LEN];
6399 error = netdev_get_etheraddr(port->netdev, ea);
6401 return eth_addr_to_uint64(ea);
6403 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6404 ofproto->name, netdev_get_name(port->netdev),
6405 ovs_strerror(error));
6407 return ofproto->fallback_dpid;
6411 pick_fallback_dpid(void)
6413 uint8_t ea[ETH_ADDR_LEN];
6414 eth_addr_nicira_random(ea);
6415 return eth_addr_to_uint64(ea);
6418 /* Table overflow policy. */
6420 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6421 * to NULL if the table is not configured to evict rules or if the table
6422 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6423 * or with no timeouts are not evictable.) */
6425 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
6426 OVS_REQUIRES(ofproto_mutex)
6428 struct eviction_group *evg;
6431 if (!table->eviction_fields) {
6435 /* In the common case, the outer and inner loops here will each be entered
6438 * - The inner loop normally "return"s in its first iteration. If the
6439 * eviction group has any evictable rules, then it always returns in
6442 * - The outer loop only iterates more than once if the largest eviction
6443 * group has no evictable rules.
6445 * - The outer loop can exit only if table's 'max_flows' is all filled up
6446 * by unevictable rules. */
6447 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
6450 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
6459 /* Searches 'ofproto' for tables that have more flows than their configured
6460 * maximum and that have flow eviction enabled, and evicts as many flows as
6461 * necessary and currently feasible from them.
6463 * This triggers only when an OpenFlow table has N flows in it and then the
6464 * client configures a maximum number of flows less than N. */
6466 ofproto_evict(struct ofproto *ofproto)
6468 struct oftable *table;
6470 ovs_mutex_lock(&ofproto_mutex);
6471 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
6472 evict_rules_from_table(ofproto, table, 0);
6474 ovs_mutex_unlock(&ofproto_mutex);
6477 /* Eviction groups. */
6479 /* Returns the priority to use for an eviction_group that contains 'n_rules'
6480 * rules. The priority contains low-order random bits to ensure that eviction
6481 * groups with the same number of rules are prioritized randomly. */
6483 eviction_group_priority(size_t n_rules)
6485 uint16_t size = MIN(UINT16_MAX, n_rules);
6486 return (size << 16) | random_uint16();
6489 /* Updates 'evg', an eviction_group within 'table', following a change that
6490 * adds or removes rules in 'evg'. */
6492 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
6493 OVS_REQUIRES(ofproto_mutex)
6495 heap_change(&table->eviction_groups_by_size, &evg->size_node,
6496 eviction_group_priority(heap_count(&evg->rules)));
6499 /* Destroys 'evg', an eviction_group within 'table':
6501 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
6502 * rules themselves, just removes them from the eviction group.)
6504 * - Removes 'evg' from 'table'.
6508 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
6509 OVS_REQUIRES(ofproto_mutex)
6511 while (!heap_is_empty(&evg->rules)) {
6514 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
6515 rule->eviction_group = NULL;
6517 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
6518 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
6519 heap_destroy(&evg->rules);
6523 /* Removes 'rule' from its eviction group, if any. */
6525 eviction_group_remove_rule(struct rule *rule)
6526 OVS_REQUIRES(ofproto_mutex)
6528 if (rule->eviction_group) {
6529 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6530 struct eviction_group *evg = rule->eviction_group;
6532 rule->eviction_group = NULL;
6533 heap_remove(&evg->rules, &rule->evg_node);
6534 if (heap_is_empty(&evg->rules)) {
6535 eviction_group_destroy(table, evg);
6537 eviction_group_resized(table, evg);
6542 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
6543 * returns the hash value. */
6545 eviction_group_hash_rule(struct rule *rule)
6546 OVS_REQUIRES(ofproto_mutex)
6548 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6549 const struct mf_subfield *sf;
6553 hash = table->eviction_group_id_basis;
6554 miniflow_expand(&rule->cr.match.flow, &flow);
6555 for (sf = table->eviction_fields;
6556 sf < &table->eviction_fields[table->n_eviction_fields];
6559 if (mf_are_prereqs_ok(sf->field, &flow)) {
6560 union mf_value value;
6562 mf_get_value(sf->field, &flow, &value);
6564 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
6566 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
6567 unsigned int start = sf->ofs + sf->n_bits;
6568 bitwise_zero(&value, sf->field->n_bytes, start,
6569 sf->field->n_bytes * 8 - start);
6571 hash = hash_bytes(&value, sf->field->n_bytes, hash);
6573 hash = hash_int(hash, 0);
6580 /* Returns an eviction group within 'table' with the given 'id', creating one
6582 static struct eviction_group *
6583 eviction_group_find(struct oftable *table, uint32_t id)
6584 OVS_REQUIRES(ofproto_mutex)
6586 struct eviction_group *evg;
6588 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
6592 evg = xmalloc(sizeof *evg);
6593 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
6594 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
6595 eviction_group_priority(0));
6596 heap_init(&evg->rules);
6601 /* Returns an eviction priority for 'rule'. The return value should be
6602 * interpreted so that higher priorities make a rule more attractive candidates
6605 rule_eviction_priority(struct rule *rule)
6606 OVS_REQUIRES(ofproto_mutex)
6608 long long int hard_expiration;
6609 long long int idle_expiration;
6610 long long int expiration;
6611 uint32_t expiration_offset;
6613 /* Calculate time of expiration. */
6614 ovs_mutex_lock(&rule->mutex);
6615 hard_expiration = (rule->hard_timeout
6616 ? rule->modified + rule->hard_timeout * 1000
6618 idle_expiration = (rule->idle_timeout
6619 ? rule->used + rule->idle_timeout * 1000
6621 expiration = MIN(hard_expiration, idle_expiration);
6622 ovs_mutex_unlock(&rule->mutex);
6623 if (expiration == LLONG_MAX) {
6627 /* Calculate the time of expiration as a number of (approximate) seconds
6628 * after program startup.
6630 * This should work OK for program runs that last UINT32_MAX seconds or
6631 * less. Therefore, please restart OVS at least once every 136 years. */
6632 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
6634 /* Invert the expiration offset because we're using a max-heap. */
6635 return UINT32_MAX - expiration_offset;
6638 /* Adds 'rule' to an appropriate eviction group for its oftable's
6639 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
6640 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
6643 * The caller must ensure that 'rule' is not already in an eviction group. */
6645 eviction_group_add_rule(struct rule *rule)
6646 OVS_REQUIRES(ofproto_mutex)
6648 struct ofproto *ofproto = rule->ofproto;
6649 struct oftable *table = &ofproto->tables[rule->table_id];
6652 ovs_mutex_lock(&rule->mutex);
6653 has_timeout = rule->hard_timeout || rule->idle_timeout;
6654 ovs_mutex_unlock(&rule->mutex);
6656 if (table->eviction_fields && has_timeout) {
6657 struct eviction_group *evg;
6659 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
6661 rule->eviction_group = evg;
6662 heap_insert(&evg->rules, &rule->evg_node,
6663 rule_eviction_priority(rule));
6664 eviction_group_resized(table, evg);
6670 /* Initializes 'table'. */
6672 oftable_init(struct oftable *table)
6674 memset(table, 0, sizeof *table);
6675 classifier_init(&table->cls, flow_segment_u32s);
6676 table->max_flows = UINT_MAX;
6677 atomic_init(&table->config, (unsigned int)OFPTC11_TABLE_MISS_CONTROLLER);
6680 /* Destroys 'table', including its classifier and eviction groups.
6682 * The caller is responsible for freeing 'table' itself. */
6684 oftable_destroy(struct oftable *table)
6686 fat_rwlock_rdlock(&table->cls.rwlock);
6687 ovs_assert(classifier_is_empty(&table->cls));
6688 fat_rwlock_unlock(&table->cls.rwlock);
6689 oftable_disable_eviction(table);
6690 classifier_destroy(&table->cls);
6692 atomic_destroy(&table->config);
6695 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
6696 * string, then 'table' will use its default name.
6698 * This only affects the name exposed for a table exposed through the OpenFlow
6699 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
6701 oftable_set_name(struct oftable *table, const char *name)
6703 if (name && name[0]) {
6704 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
6705 if (!table->name || strncmp(name, table->name, len)) {
6707 table->name = xmemdup0(name, len);
6715 /* oftables support a choice of two policies when adding a rule would cause the
6716 * number of flows in the table to exceed the configured maximum number: either
6717 * they can refuse to add the new flow or they can evict some existing flow.
6718 * This function configures the former policy on 'table'. */
6720 oftable_disable_eviction(struct oftable *table)
6721 OVS_REQUIRES(ofproto_mutex)
6723 if (table->eviction_fields) {
6724 struct eviction_group *evg, *next;
6726 HMAP_FOR_EACH_SAFE (evg, next, id_node,
6727 &table->eviction_groups_by_id) {
6728 eviction_group_destroy(table, evg);
6730 hmap_destroy(&table->eviction_groups_by_id);
6731 heap_destroy(&table->eviction_groups_by_size);
6733 free(table->eviction_fields);
6734 table->eviction_fields = NULL;
6735 table->n_eviction_fields = 0;
6739 /* oftables support a choice of two policies when adding a rule would cause the
6740 * number of flows in the table to exceed the configured maximum number: either
6741 * they can refuse to add the new flow or they can evict some existing flow.
6742 * This function configures the latter policy on 'table', with fairness based
6743 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
6744 * 'n_fields' as 0 disables fairness.) */
6746 oftable_enable_eviction(struct oftable *table,
6747 const struct mf_subfield *fields, size_t n_fields)
6748 OVS_REQUIRES(ofproto_mutex)
6750 struct cls_cursor cursor;
6753 if (table->eviction_fields
6754 && n_fields == table->n_eviction_fields
6756 || !memcmp(fields, table->eviction_fields,
6757 n_fields * sizeof *fields))) {
6762 oftable_disable_eviction(table);
6764 table->n_eviction_fields = n_fields;
6765 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
6767 table->eviction_group_id_basis = random_uint32();
6768 hmap_init(&table->eviction_groups_by_id);
6769 heap_init(&table->eviction_groups_by_size);
6771 fat_rwlock_rdlock(&table->cls.rwlock);
6772 cls_cursor_init(&cursor, &table->cls, NULL);
6773 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
6774 eviction_group_add_rule(rule);
6776 fat_rwlock_unlock(&table->cls.rwlock);
6779 /* Removes 'rule' from the oftable that contains it. */
6781 oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule)
6782 OVS_REQUIRES(ofproto_mutex)
6784 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
6786 fat_rwlock_wrlock(&cls->rwlock);
6787 classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr));
6788 fat_rwlock_unlock(&cls->rwlock);
6790 cookies_remove(ofproto, rule);
6792 eviction_group_remove_rule(rule);
6793 if (!list_is_empty(&rule->expirable)) {
6794 list_remove(&rule->expirable);
6796 if (!list_is_empty(&rule->meter_list_node)) {
6797 list_remove(&rule->meter_list_node);
6798 list_init(&rule->meter_list_node);
6803 oftable_remove_rule(struct rule *rule)
6804 OVS_REQUIRES(ofproto_mutex)
6806 oftable_remove_rule__(rule->ofproto, rule);
6809 /* Inserts 'rule' into its oftable, which must not already contain any rule for
6810 * the same cls_rule. */
6812 oftable_insert_rule(struct rule *rule)
6813 OVS_REQUIRES(ofproto_mutex)
6815 struct ofproto *ofproto = rule->ofproto;
6816 struct oftable *table = &ofproto->tables[rule->table_id];
6819 ovs_mutex_lock(&rule->mutex);
6820 may_expire = rule->hard_timeout || rule->idle_timeout;
6821 ovs_mutex_unlock(&rule->mutex);
6824 list_insert(&ofproto->expirable, &rule->expirable);
6827 cookies_insert(ofproto, rule);
6829 if (rule->actions->provider_meter_id != UINT32_MAX) {
6830 uint32_t meter_id = ofpacts_get_meter(rule->actions->ofpacts,
6831 rule->actions->ofpacts_len);
6832 struct meter *meter = ofproto->meters[meter_id];
6833 list_insert(&meter->rules, &rule->meter_list_node);
6835 fat_rwlock_wrlock(&table->cls.rwlock);
6836 classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr));
6837 fat_rwlock_unlock(&table->cls.rwlock);
6838 eviction_group_add_rule(rule);
6841 /* unixctl commands. */
6844 ofproto_lookup(const char *name)
6846 struct ofproto *ofproto;
6848 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
6850 if (!strcmp(ofproto->name, name)) {
6858 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
6859 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6861 struct ofproto *ofproto;
6865 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
6866 ds_put_format(&results, "%s\n", ofproto->name);
6868 unixctl_command_reply(conn, ds_cstr(&results));
6869 ds_destroy(&results);
6873 ofproto_unixctl_init(void)
6875 static bool registered;
6881 unixctl_command_register("ofproto/list", "", 0, 0,
6882 ofproto_unixctl_list, NULL);
6885 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6887 * This is deprecated. It is only for compatibility with broken device drivers
6888 * in old versions of Linux that do not properly support VLANs when VLAN
6889 * devices are not used. When broken device drivers are no longer in
6890 * widespread use, we will delete these interfaces. */
6892 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
6893 * (exactly) by an OpenFlow rule in 'ofproto'. */
6895 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
6897 const struct oftable *oftable;
6899 free(ofproto->vlan_bitmap);
6900 ofproto->vlan_bitmap = bitmap_allocate(4096);
6901 ofproto->vlans_changed = false;
6903 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
6904 const struct cls_subtable *table;
6906 fat_rwlock_rdlock(&oftable->cls.rwlock);
6907 HMAP_FOR_EACH (table, hmap_node, &oftable->cls.subtables) {
6908 if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) {
6909 const struct cls_rule *rule;
6911 HMAP_FOR_EACH (rule, hmap_node, &table->rules) {
6912 uint16_t vid = miniflow_get_vid(&rule->match.flow);
6913 bitmap_set1(vlan_bitmap, vid);
6914 bitmap_set1(ofproto->vlan_bitmap, vid);
6918 fat_rwlock_unlock(&oftable->cls.rwlock);
6922 /* Returns true if new VLANs have come into use by the flow table since the
6923 * last call to ofproto_get_vlan_usage().
6925 * We don't track when old VLANs stop being used. */
6927 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
6929 return ofproto->vlans_changed;
6932 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
6933 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
6934 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
6935 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
6936 * then the VLAN device is un-enslaved. */
6938 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
6939 ofp_port_t realdev_ofp_port, int vid)
6941 struct ofport *ofport;
6944 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
6946 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
6948 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
6949 ofproto->name, vlandev_ofp_port);
6953 if (!ofproto->ofproto_class->set_realdev) {
6954 if (!vlandev_ofp_port) {
6957 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
6961 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
6963 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
6964 ofproto->name, vlandev_ofp_port,
6965 netdev_get_name(ofport->netdev), ovs_strerror(error));