2 * Copyright (c) 2009-2015 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"
47 #include "dp-packet.h"
51 #include "poll-loop.h"
59 #include "unaligned.h"
61 #include "openvswitch/vlog.h"
64 VLOG_DEFINE_THIS_MODULE(ofproto);
66 COVERAGE_DEFINE(ofproto_flush);
67 COVERAGE_DEFINE(ofproto_packet_out);
68 COVERAGE_DEFINE(ofproto_queue_req);
69 COVERAGE_DEFINE(ofproto_recv_openflow);
70 COVERAGE_DEFINE(ofproto_reinit_ports);
71 COVERAGE_DEFINE(ofproto_update_port);
73 /* Default fields to use for prefix tries in each flow table, unless something
74 * else is configured. */
75 const enum mf_field_id default_prefix_fields[2] =
76 { MFF_IPV4_DST, MFF_IPV4_SRC };
79 static void oftable_init(struct oftable *);
80 static void oftable_destroy(struct oftable *);
82 static void oftable_set_name(struct oftable *, const char *name);
84 static enum ofperr evict_rules_from_table(struct oftable *)
85 OVS_REQUIRES(ofproto_mutex);
86 static void oftable_disable_eviction(struct oftable *);
87 static void oftable_enable_eviction(struct oftable *,
88 const struct mf_subfield *fields,
91 /* A set of rules within a single OpenFlow table (oftable) that have the same
92 * values for the oftable's eviction_fields. A rule to be evicted, when one is
93 * needed, is taken from the eviction group that contains the greatest number
96 * An oftable owns any number of eviction groups, each of which contains any
99 * Membership in an eviction group is imprecise, based on the hash of the
100 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
101 * That is, if two rules have different eviction_fields, but those
102 * eviction_fields hash to the same value, then they will belong to the same
103 * eviction_group anyway.
105 * (When eviction is not enabled on an oftable, we don't track any eviction
106 * groups, to save time and space.) */
107 struct eviction_group {
108 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
109 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
110 struct heap rules; /* Contains "struct rule"s. */
113 static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
114 OVS_REQUIRES(ofproto_mutex);
115 static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *)
116 OVS_REQUIRES(ofproto_mutex);;
117 static void eviction_group_add_rule(struct rule *)
118 OVS_REQUIRES(ofproto_mutex);
119 static void eviction_group_remove_rule(struct rule *)
120 OVS_REQUIRES(ofproto_mutex);
122 /* Criteria that flow_mod and other operations use for selecting rules on
123 * which to operate. */
124 struct rule_criteria {
125 /* An OpenFlow table or 255 for all tables. */
128 /* OpenFlow matching criteria. Interpreted different in "loose" way by
129 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
130 * defined in the OpenFlow spec. */
133 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
134 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
135 * The rule will not be selected if M is 1 and B != C. */
137 ovs_be64 cookie_mask;
139 /* Selection based on actions within a rule:
141 * If out_port != OFPP_ANY, selects only rules that output to out_port.
142 * If out_group != OFPG_ALL, select only rules that output to out_group. */
146 /* If true, collects only rules that are modifiable. */
148 bool include_readonly;
151 static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
152 const struct match *match, int priority,
154 ovs_be64 cookie, ovs_be64 cookie_mask,
155 ofp_port_t out_port, uint32_t out_group);
156 static void rule_criteria_require_rw(struct rule_criteria *,
157 bool can_write_readonly);
158 static void rule_criteria_destroy(struct rule_criteria *);
160 static enum ofperr collect_rules_loose(struct ofproto *,
161 const struct rule_criteria *,
162 struct rule_collection *);
164 /* A packet that needs to be passed to rule_execute().
166 * (We can't do this immediately from ofopgroup_complete() because that holds
167 * ofproto_mutex, which rule_execute() needs released.) */
168 struct rule_execute {
169 struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */
170 struct rule *rule; /* Owns a reference to the rule. */
172 struct dp_packet *packet; /* Owns the packet. */
175 static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
176 static void destroy_rule_executes(struct ofproto *);
178 struct learned_cookie {
180 /* In struct ofproto's 'learned_cookies' hmap. */
181 struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex);
183 /* In 'dead_cookies' list when removed from hmap. */
184 struct ovs_list list_node;
188 ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex);
189 uint8_t table_id OVS_GUARDED_BY(ofproto_mutex);
191 /* Number of references from "learn" actions.
193 * When this drops to 0, all of the flows in 'table_id' with the specified
194 * 'cookie' are deleted. */
195 int n OVS_GUARDED_BY(ofproto_mutex);
198 static const struct ofpact_learn *next_learn_with_delete(
199 const struct rule_actions *, const struct ofpact_learn *start);
201 static void learned_cookies_inc(struct ofproto *, const struct rule_actions *)
202 OVS_REQUIRES(ofproto_mutex);
203 static void learned_cookies_dec(struct ofproto *, const struct rule_actions *,
204 struct ovs_list *dead_cookies)
205 OVS_REQUIRES(ofproto_mutex);
206 static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies)
207 OVS_REQUIRES(ofproto_mutex);
210 static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
211 static void ofport_destroy(struct ofport *);
213 static void update_port(struct ofproto *, const char *devname);
214 static int init_ports(struct ofproto *);
215 static void reinit_ports(struct ofproto *);
217 static long long int ofport_get_usage(const struct ofproto *,
218 ofp_port_t ofp_port);
219 static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
220 long long int last_used);
221 static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
225 * Keeps track of the currently used and recently used ofport values and is
226 * used to prevent immediate recycling of ofport values. */
227 struct ofport_usage {
228 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
229 ofp_port_t ofp_port; /* OpenFlow port number. */
230 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
231 represents in-use ofports. */
235 static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
236 static bool rule_is_readonly(const struct rule *);
237 static void ofproto_rule_insert__(struct ofproto *, struct rule *)
238 OVS_REQUIRES(ofproto_mutex);
239 static void ofproto_rule_remove__(struct ofproto *, struct rule *)
240 OVS_REQUIRES(ofproto_mutex);
242 /* The source of a flow_mod request, in the code that processes flow_mods.
244 * A flow table modification request can be generated externally, via OpenFlow,
245 * or internally through a function call. This structure indicates the source
246 * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't
247 * meaningful and thus supplied as NULL. */
248 struct flow_mod_requester {
249 struct ofconn *ofconn; /* Connection on which flow_mod arrived. */
250 const struct ofp_header *request;
254 static enum ofperr replace_rule_create(struct ofproto *,
255 struct ofputil_flow_mod *,
256 struct cls_rule *cr, uint8_t table_id,
257 struct rule *old_rule,
258 struct rule **new_rule)
259 OVS_REQUIRES(ofproto_mutex);
261 static void replace_rule_start(struct ofproto *,
262 struct rule *old_rule,
263 struct rule *new_rule,
264 struct cls_conjunction *, size_t n_conjs)
265 OVS_REQUIRES(ofproto_mutex);
267 static void replace_rule_revert(struct ofproto *, struct rule *old_rule,
268 struct rule *new_rule)
269 OVS_REQUIRES(ofproto_mutex);
271 static void replace_rule_finish(struct ofproto *, struct ofputil_flow_mod *,
272 const struct flow_mod_requester *,
273 struct rule *old_rule, struct rule *new_rule,
274 struct ovs_list *dead_cookies)
275 OVS_REQUIRES(ofproto_mutex);
276 static void delete_flows__(struct rule_collection *,
277 enum ofp_flow_removed_reason,
278 const struct flow_mod_requester *)
279 OVS_REQUIRES(ofproto_mutex);
281 static void send_buffered_packet(const struct flow_mod_requester *,
282 uint32_t buffer_id, struct rule *)
283 OVS_REQUIRES(ofproto_mutex);
285 static bool ofproto_group_exists__(const struct ofproto *ofproto,
287 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
288 static bool ofproto_group_exists(const struct ofproto *ofproto,
290 OVS_EXCLUDED(ofproto->groups_rwlock);
291 static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
292 static void handle_openflow(struct ofconn *, const struct ofpbuf *);
293 static enum ofperr do_bundle_flow_mod_start(struct ofproto *,
294 struct ofputil_flow_mod *,
295 struct ofp_bundle_entry *)
296 OVS_REQUIRES(ofproto_mutex);
297 static void do_bundle_flow_mod_finish(struct ofproto *,
298 struct ofputil_flow_mod *,
299 const struct flow_mod_requester *,
300 struct ofp_bundle_entry *)
301 OVS_REQUIRES(ofproto_mutex);
302 static enum ofperr handle_flow_mod__(struct ofproto *,
303 struct ofputil_flow_mod *,
304 const struct flow_mod_requester *)
305 OVS_EXCLUDED(ofproto_mutex);
306 static void calc_duration(long long int start, long long int now,
307 uint32_t *sec, uint32_t *nsec);
310 static uint64_t pick_datapath_id(const struct ofproto *);
311 static uint64_t pick_fallback_dpid(void);
312 static void ofproto_destroy__(struct ofproto *);
313 static void update_mtu(struct ofproto *, struct ofport *);
314 static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
315 static void meter_insert_rule(struct rule *);
318 static void ofproto_unixctl_init(void);
320 /* All registered ofproto classes, in probe order. */
321 static const struct ofproto_class **ofproto_classes;
322 static size_t n_ofproto_classes;
323 static size_t allocated_ofproto_classes;
325 /* Global lock that protects all flow table operations. */
326 struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
328 unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
329 unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
331 size_t n_handlers, n_revalidators;
335 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
336 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
338 /* Initial mappings of port to OpenFlow number mappings. */
339 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
341 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
343 /* The default value of true waits for flow restore. */
344 static bool flow_restore_wait = true;
346 /* Must be called to initialize the ofproto library.
348 * The caller may pass in 'iface_hints', which contains an shash of
349 * "iface_hint" elements indexed by the interface's name. The provider
350 * may use these hints to describe the startup configuration in order to
351 * reinitialize its state. The caller owns the provided data, so a
352 * provider will make copies of anything required. An ofproto provider
353 * will remove any existing state that is not described by the hint, and
354 * may choose to remove it all. */
356 ofproto_init(const struct shash *iface_hints)
358 struct shash_node *node;
361 ofproto_class_register(&ofproto_dpif_class);
363 /* Make a local copy, since we don't own 'iface_hints' elements. */
364 SHASH_FOR_EACH(node, iface_hints) {
365 const struct iface_hint *orig_hint = node->data;
366 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
367 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
369 new_hint->br_name = xstrdup(orig_hint->br_name);
370 new_hint->br_type = xstrdup(br_type);
371 new_hint->ofp_port = orig_hint->ofp_port;
373 shash_add(&init_ofp_ports, node->name, new_hint);
376 for (i = 0; i < n_ofproto_classes; i++) {
377 ofproto_classes[i]->init(&init_ofp_ports);
381 /* 'type' should be a normalized datapath type, as returned by
382 * ofproto_normalize_type(). Returns the corresponding ofproto_class
383 * structure, or a null pointer if there is none registered for 'type'. */
384 static const struct ofproto_class *
385 ofproto_class_find__(const char *type)
389 for (i = 0; i < n_ofproto_classes; i++) {
390 const struct ofproto_class *class = ofproto_classes[i];
395 class->enumerate_types(&types);
396 found = sset_contains(&types, type);
397 sset_destroy(&types);
403 VLOG_WARN("unknown datapath type %s", type);
407 /* Registers a new ofproto class. After successful registration, new ofprotos
408 * of that type can be created using ofproto_create(). */
410 ofproto_class_register(const struct ofproto_class *new_class)
414 for (i = 0; i < n_ofproto_classes; i++) {
415 if (ofproto_classes[i] == new_class) {
420 if (n_ofproto_classes >= allocated_ofproto_classes) {
421 ofproto_classes = x2nrealloc(ofproto_classes,
422 &allocated_ofproto_classes,
423 sizeof *ofproto_classes);
425 ofproto_classes[n_ofproto_classes++] = new_class;
429 /* Unregisters a datapath provider. 'type' must have been previously
430 * registered and not currently be in use by any ofprotos. After
431 * unregistration new datapaths of that type cannot be opened using
432 * ofproto_create(). */
434 ofproto_class_unregister(const struct ofproto_class *class)
438 for (i = 0; i < n_ofproto_classes; i++) {
439 if (ofproto_classes[i] == class) {
440 for (i++; i < n_ofproto_classes; i++) {
441 ofproto_classes[i - 1] = ofproto_classes[i];
447 VLOG_WARN("attempted to unregister an ofproto class that is not "
452 /* Clears 'types' and enumerates all registered ofproto types into it. The
453 * caller must first initialize the sset. */
455 ofproto_enumerate_types(struct sset *types)
460 for (i = 0; i < n_ofproto_classes; i++) {
461 ofproto_classes[i]->enumerate_types(types);
465 /* Returns the fully spelled out name for the given ofproto 'type'.
467 * Normalized type string can be compared with strcmp(). Unnormalized type
468 * string might be the same even if they have different spellings. */
470 ofproto_normalize_type(const char *type)
472 return type && type[0] ? type : "system";
475 /* Clears 'names' and enumerates the names of all known created ofprotos with
476 * the given 'type'. The caller must first initialize the sset. Returns 0 if
477 * successful, otherwise a positive errno value.
479 * Some kinds of datapaths might not be practically enumerable. This is not
480 * considered an error. */
482 ofproto_enumerate_names(const char *type, struct sset *names)
484 const struct ofproto_class *class = ofproto_class_find__(type);
485 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
489 ofproto_bump_tables_version(struct ofproto *ofproto)
491 ++ofproto->tables_version;
492 ofproto->ofproto_class->set_tables_version(ofproto,
493 ofproto->tables_version);
497 ofproto_create(const char *datapath_name, const char *datapath_type,
498 struct ofproto **ofprotop)
500 const struct ofproto_class *class;
501 struct ofproto *ofproto;
507 ofproto_unixctl_init();
509 datapath_type = ofproto_normalize_type(datapath_type);
510 class = ofproto_class_find__(datapath_type);
512 VLOG_WARN("could not create datapath %s of unknown type %s",
513 datapath_name, datapath_type);
517 ofproto = class->alloc();
519 VLOG_ERR("failed to allocate datapath %s of type %s",
520 datapath_name, datapath_type);
525 ovs_mutex_lock(&ofproto_mutex);
526 memset(ofproto, 0, sizeof *ofproto);
527 ofproto->ofproto_class = class;
528 ofproto->name = xstrdup(datapath_name);
529 ofproto->type = xstrdup(datapath_type);
530 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
531 hash_string(ofproto->name, 0));
532 ofproto->datapath_id = 0;
533 ofproto->forward_bpdu = false;
534 ofproto->fallback_dpid = pick_fallback_dpid();
535 ofproto->mfr_desc = NULL;
536 ofproto->hw_desc = NULL;
537 ofproto->sw_desc = NULL;
538 ofproto->serial_desc = NULL;
539 ofproto->dp_desc = NULL;
540 ofproto->frag_handling = OFPC_FRAG_NORMAL;
541 hmap_init(&ofproto->ports);
542 hmap_init(&ofproto->ofport_usage);
543 shash_init(&ofproto->port_by_name);
544 simap_init(&ofproto->ofp_requests);
545 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
546 ofproto->eviction_group_timer = LLONG_MIN;
547 ofproto->tables = NULL;
548 ofproto->n_tables = 0;
549 ofproto->tables_version = CLS_MIN_VERSION;
550 hindex_init(&ofproto->cookies);
551 hmap_init(&ofproto->learned_cookies);
552 list_init(&ofproto->expirable);
553 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
554 guarded_list_init(&ofproto->rule_executes);
555 ofproto->vlan_bitmap = NULL;
556 ofproto->vlans_changed = false;
557 ofproto->min_mtu = INT_MAX;
558 ovs_rwlock_init(&ofproto->groups_rwlock);
559 hmap_init(&ofproto->groups);
560 ovs_mutex_unlock(&ofproto_mutex);
561 ofproto->ogf.types = 0xf;
562 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
563 OFPGFC_SELECT_WEIGHT;
564 for (i = 0; i < 4; i++) {
565 ofproto->ogf.max_groups[i] = OFPG_MAX;
566 ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
569 error = ofproto->ofproto_class->construct(ofproto);
571 VLOG_ERR("failed to open datapath %s: %s",
572 datapath_name, ovs_strerror(error));
573 connmgr_destroy(ofproto->connmgr);
574 ofproto_destroy__(ofproto);
578 /* Check that hidden tables, if any, are at the end. */
579 ovs_assert(ofproto->n_tables);
580 for (i = 0; i + 1 < ofproto->n_tables; i++) {
581 enum oftable_flags flags = ofproto->tables[i].flags;
582 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
584 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
587 ofproto->datapath_id = pick_datapath_id(ofproto);
590 /* Initialize meters table. */
591 if (ofproto->ofproto_class->meter_get_features) {
592 ofproto->ofproto_class->meter_get_features(ofproto,
593 &ofproto->meter_features);
595 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
597 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
598 * sizeof(struct meter *));
600 /* Set the initial tables version. */
601 ofproto_bump_tables_version(ofproto);
607 /* Must be called (only) by an ofproto implementation in its constructor
608 * function. See the large comment on 'construct' in struct ofproto_class for
611 ofproto_init_tables(struct ofproto *ofproto, int n_tables)
613 struct oftable *table;
615 ovs_assert(!ofproto->n_tables);
616 ovs_assert(n_tables >= 1 && n_tables <= 255);
618 ofproto->n_tables = n_tables;
619 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
620 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
625 /* To be optionally called (only) by an ofproto implementation in its
626 * constructor function. See the large comment on 'construct' in struct
627 * ofproto_class for details.
629 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
630 * will then ensure that actions passed into the ofproto implementation will
631 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
632 * function is not called, there will be no such restriction.
634 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
635 * the 'max_ports' restriction. */
637 ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
639 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
640 ofproto->max_ports = max_ports;
644 ofproto_get_datapath_id(const struct ofproto *ofproto)
646 return ofproto->datapath_id;
650 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
652 uint64_t old_dpid = p->datapath_id;
653 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
654 if (p->datapath_id != old_dpid) {
655 /* Force all active connections to reconnect, since there is no way to
656 * notify a controller that the datapath ID has changed. */
657 ofproto_reconnect_controllers(p);
662 ofproto_set_controllers(struct ofproto *p,
663 const struct ofproto_controller *controllers,
664 size_t n_controllers, uint32_t allowed_versions)
666 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
671 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
673 connmgr_set_fail_mode(p->connmgr, fail_mode);
676 /* Drops the connections between 'ofproto' and all of its controllers, forcing
677 * them to reconnect. */
679 ofproto_reconnect_controllers(struct ofproto *ofproto)
681 connmgr_reconnect(ofproto->connmgr);
684 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
685 * in-band control should guarantee access, in the same way that in-band
686 * control guarantees access to OpenFlow controllers. */
688 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
689 const struct sockaddr_in *extras, size_t n)
691 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
694 /* Sets the OpenFlow queue used by flows set up by in-band control on
695 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
696 * flows will use the default queue. */
698 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
700 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
703 /* Sets the number of flows at which eviction from the kernel flow table
706 ofproto_set_flow_limit(unsigned limit)
708 ofproto_flow_limit = limit;
711 /* Sets the maximum idle time for flows in the datapath before they are
714 ofproto_set_max_idle(unsigned max_idle)
716 ofproto_max_idle = max_idle;
719 /* If forward_bpdu is true, the NORMAL action will forward frames with
720 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
721 * the NORMAL action will drop these frames. */
723 ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
725 bool old_val = ofproto->forward_bpdu;
726 ofproto->forward_bpdu = forward_bpdu;
727 if (old_val != ofproto->forward_bpdu) {
728 if (ofproto->ofproto_class->forward_bpdu_changed) {
729 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
734 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
735 * 'idle_time', in seconds, and the maximum number of MAC table entries to
738 ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
741 if (ofproto->ofproto_class->set_mac_table_config) {
742 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
747 /* Multicast snooping configuration. */
749 /* Configures multicast snooping on 'ofproto' using the settings
750 * defined in 's'. If 's' is NULL, disables multicast snooping.
752 * Returns 0 if successful, otherwise a positive errno value. */
754 ofproto_set_mcast_snooping(struct ofproto *ofproto,
755 const struct ofproto_mcast_snooping_settings *s)
757 return (ofproto->ofproto_class->set_mcast_snooping
758 ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
762 /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'.
764 * Returns 0 if successful, otherwise a positive errno value.*/
766 ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux,
767 const struct ofproto_mcast_snooping_port_settings *s)
769 return (ofproto->ofproto_class->set_mcast_snooping_port
770 ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s)
775 ofproto_set_n_dpdk_rxqs(int n_rxqs)
777 n_dpdk_rxqs = MAX(n_rxqs, 0);
781 ofproto_set_cpu_mask(const char *cmask)
785 pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
789 ofproto_set_threads(int n_handlers_, int n_revalidators_)
791 int threads = MAX(count_cpu_cores(), 2);
793 n_revalidators = MAX(n_revalidators_, 0);
794 n_handlers = MAX(n_handlers_, 0);
796 if (!n_revalidators) {
797 n_revalidators = n_handlers
798 ? MAX(threads - (int) n_handlers, 1)
803 n_handlers = MAX(threads - (int) n_revalidators, 1);
808 ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
811 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
815 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
817 return connmgr_set_snoops(ofproto->connmgr, snoops);
821 ofproto_set_netflow(struct ofproto *ofproto,
822 const struct netflow_options *nf_options)
824 if (nf_options && sset_is_empty(&nf_options->collectors)) {
828 if (ofproto->ofproto_class->set_netflow) {
829 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
831 return nf_options ? EOPNOTSUPP : 0;
836 ofproto_set_sflow(struct ofproto *ofproto,
837 const struct ofproto_sflow_options *oso)
839 if (oso && sset_is_empty(&oso->targets)) {
843 if (ofproto->ofproto_class->set_sflow) {
844 return ofproto->ofproto_class->set_sflow(ofproto, oso);
846 return oso ? EOPNOTSUPP : 0;
851 ofproto_set_ipfix(struct ofproto *ofproto,
852 const struct ofproto_ipfix_bridge_exporter_options *bo,
853 const struct ofproto_ipfix_flow_exporter_options *fo,
856 if (ofproto->ofproto_class->set_ipfix) {
857 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
859 return (bo || fo) ? EOPNOTSUPP : 0;
864 ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
866 flow_restore_wait = flow_restore_wait_db;
870 ofproto_get_flow_restore_wait(void)
872 return flow_restore_wait;
876 /* Spanning Tree Protocol (STP) configuration. */
878 /* Configures STP on 'ofproto' using the settings defined in 's'. If
879 * 's' is NULL, disables STP.
881 * Returns 0 if successful, otherwise a positive errno value. */
883 ofproto_set_stp(struct ofproto *ofproto,
884 const struct ofproto_stp_settings *s)
886 return (ofproto->ofproto_class->set_stp
887 ? ofproto->ofproto_class->set_stp(ofproto, s)
891 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
892 * 'enabled' member of 's' is false, then the other members are not
895 * Returns 0 if successful, otherwise a positive errno value. */
897 ofproto_get_stp_status(struct ofproto *ofproto,
898 struct ofproto_stp_status *s)
900 return (ofproto->ofproto_class->get_stp_status
901 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
905 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
906 * in 's'. The caller is responsible for assigning STP port numbers
907 * (using the 'port_num' member in the range of 1 through 255, inclusive)
908 * and ensuring there are no duplicates. If the 's' is NULL, then STP
909 * is disabled on the port.
911 * Returns 0 if successful, otherwise a positive errno value.*/
913 ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
914 const struct ofproto_port_stp_settings *s)
916 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
918 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
919 ofproto->name, ofp_port);
923 return (ofproto->ofproto_class->set_stp_port
924 ? ofproto->ofproto_class->set_stp_port(ofport, s)
928 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
929 * 's'. If the 'enabled' member in 's' is false, then the other members
930 * are not meaningful.
932 * Returns 0 if successful, otherwise a positive errno value.*/
934 ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
935 struct ofproto_port_stp_status *s)
937 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
939 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
940 "port %"PRIu16, ofproto->name, ofp_port);
944 return (ofproto->ofproto_class->get_stp_port_status
945 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
949 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
950 * 's'. If the 'enabled' member in 's' is false, then the other members
951 * are not meaningful.
953 * Returns 0 if successful, otherwise a positive errno value.*/
955 ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
956 struct ofproto_port_stp_stats *s)
958 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
960 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
961 "port %"PRIu16, ofproto->name, ofp_port);
965 return (ofproto->ofproto_class->get_stp_port_stats
966 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
970 /* Rapid Spanning Tree Protocol (RSTP) configuration. */
972 /* Configures RSTP on 'ofproto' using the settings defined in 's'. If
973 * 's' is NULL, disables RSTP.
975 * Returns 0 if successful, otherwise a positive errno value. */
977 ofproto_set_rstp(struct ofproto *ofproto,
978 const struct ofproto_rstp_settings *s)
980 if (!ofproto->ofproto_class->set_rstp) {
983 ofproto->ofproto_class->set_rstp(ofproto, s);
987 /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the
988 * 'enabled' member of 's' is false, then the other members are not
991 * Returns 0 if successful, otherwise a positive errno value. */
993 ofproto_get_rstp_status(struct ofproto *ofproto,
994 struct ofproto_rstp_status *s)
996 if (!ofproto->ofproto_class->get_rstp_status) {
999 ofproto->ofproto_class->get_rstp_status(ofproto, s);
1003 /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
1004 * in 's'. The caller is responsible for assigning RSTP port numbers
1005 * (using the 'port_num' member in the range of 1 through 255, inclusive)
1006 * and ensuring there are no duplicates. If the 's' is NULL, then RSTP
1007 * is disabled on the port.
1009 * Returns 0 if successful, otherwise a positive errno value.*/
1011 ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
1012 const struct ofproto_port_rstp_settings *s)
1014 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1016 VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
1017 ofproto->name, ofp_port);
1021 if (!ofproto->ofproto_class->set_rstp_port) {
1024 ofproto->ofproto_class->set_rstp_port(ofport, s);
1028 /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
1029 * 's'. If the 'enabled' member in 's' is false, then the other members
1030 * are not meaningful.
1032 * Returns 0 if successful, otherwise a positive errno value.*/
1034 ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1035 struct ofproto_port_rstp_status *s)
1037 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1039 VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
1040 "port %"PRIu16, ofproto->name, ofp_port);
1044 if (!ofproto->ofproto_class->get_rstp_port_status) {
1047 ofproto->ofproto_class->get_rstp_port_status(ofport, s);
1051 /* Queue DSCP configuration. */
1053 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
1054 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
1055 * to implement QoS. Instead, it is used to implement features which require
1056 * knowledge of what queues exist on a port, and some basic information about
1059 * Returns 0 if successful, otherwise a positive errno value. */
1061 ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
1062 const struct ofproto_port_queue *queues,
1065 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1068 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
1069 ofproto->name, ofp_port);
1073 return (ofproto->ofproto_class->set_queues
1074 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
1078 /* LLDP configuration. */
1080 ofproto_port_set_lldp(struct ofproto *ofproto,
1081 ofp_port_t ofp_port,
1082 const struct smap *cfg)
1084 struct ofport *ofport;
1087 ofport = ofproto_get_port(ofproto, ofp_port);
1089 VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16,
1090 ofproto->name, ofp_port);
1093 error = (ofproto->ofproto_class->set_lldp
1094 ? ofproto->ofproto_class->set_lldp(ofport, cfg)
1097 VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)",
1098 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1099 ovs_strerror(error));
1104 ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED,
1105 const struct aa_settings *s)
1107 if (!ofproto->ofproto_class->set_aa) {
1110 ofproto->ofproto_class->set_aa(ofproto, s);
1115 ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux,
1116 const struct aa_mapping_settings *s)
1118 if (!ofproto->ofproto_class->aa_mapping_set) {
1121 ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s);
1126 ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux)
1128 if (!ofproto->ofproto_class->aa_mapping_unset) {
1131 ofproto->ofproto_class->aa_mapping_unset(ofproto, aux);
1136 ofproto_aa_vlan_get_queued(struct ofproto *ofproto,
1137 struct ovs_list *list)
1139 if (!ofproto->ofproto_class->aa_vlan_get_queued) {
1142 ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list);
1147 ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto)
1149 if (!ofproto->ofproto_class->aa_vlan_get_queue_size) {
1152 return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto);
1155 /* Connectivity Fault Management configuration. */
1157 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
1159 ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
1161 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1162 if (ofport && ofproto->ofproto_class->set_cfm) {
1163 ofproto->ofproto_class->set_cfm(ofport, NULL);
1167 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
1168 * basic configuration from the configuration members in 'cfm', and the remote
1169 * maintenance point ID from remote_mpid. Ignores the statistics members of
1172 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
1174 ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
1175 const struct cfm_settings *s)
1177 struct ofport *ofport;
1180 ofport = ofproto_get_port(ofproto, ofp_port);
1182 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
1183 ofproto->name, ofp_port);
1187 /* XXX: For configuration simplicity, we only support one remote_mpid
1188 * outside of the CFM module. It's not clear if this is the correct long
1189 * term solution or not. */
1190 error = (ofproto->ofproto_class->set_cfm
1191 ? ofproto->ofproto_class->set_cfm(ofport, s)
1194 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
1195 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1196 ovs_strerror(error));
1200 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
1201 * 'ofproto' does not have a port 'ofp_port'. */
1203 ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
1204 const struct smap *cfg)
1206 struct ofport *ofport;
1209 ofport = ofproto_get_port(ofproto, ofp_port);
1211 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1212 ofproto->name, ofp_port);
1216 error = (ofproto->ofproto_class->set_bfd
1217 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1220 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1221 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1222 ovs_strerror(error));
1226 /* Checks the status change of BFD on 'ofport'.
1228 * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */
1230 ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
1232 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1233 return (ofport && ofproto->ofproto_class->bfd_status_changed
1234 ? ofproto->ofproto_class->bfd_status_changed(ofport)
1238 /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
1239 * success. Returns a positive errno otherwise. Has no effect if 'ofp_port'
1240 * is not an OpenFlow port in 'ofproto'.
1242 * The caller must provide and own '*status'. */
1244 ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1245 struct smap *status)
1247 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1248 return (ofport && ofproto->ofproto_class->get_bfd_status
1249 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1253 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1254 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1255 * 0 if LACP partner information is not current (generally indicating a
1256 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1258 ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
1260 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1261 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1262 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
1267 ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats)
1269 struct ofproto *ofproto = port->ofproto;
1272 if (ofproto->ofproto_class->port_get_lacp_stats) {
1273 error = ofproto->ofproto_class->port_get_lacp_stats(port, stats);
1283 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1284 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1285 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1286 * configuration plus, if there is more than one slave, a bonding
1289 * If 'aux' is already registered then this function updates its configuration
1290 * to 's'. Otherwise, this function registers a new bundle.
1292 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1295 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1296 const struct ofproto_bundle_settings *s)
1298 return (ofproto->ofproto_class->bundle_set
1299 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1303 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1304 * If no such bundle has been registered, this has no effect. */
1306 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
1308 return ofproto_bundle_register(ofproto, aux, NULL);
1312 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1313 * If 'aux' is already registered then this function updates its configuration
1314 * to 's'. Otherwise, this function registers a new mirror. */
1316 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1317 const struct ofproto_mirror_settings *s)
1319 return (ofproto->ofproto_class->mirror_set
1320 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1324 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1325 * If no mirror has been registered, this has no effect. */
1327 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
1329 return ofproto_mirror_register(ofproto, aux, NULL);
1332 /* Retrieves statistics from mirror associated with client data pointer
1333 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1334 * 'bytes', respectively. If a particular counters is not supported,
1335 * the appropriate argument is set to UINT64_MAX.
1338 ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1339 uint64_t *packets, uint64_t *bytes)
1341 if (!ofproto->ofproto_class->mirror_get_stats) {
1342 *packets = *bytes = UINT64_MAX;
1346 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1350 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1351 * which all packets are flooded, instead of using MAC learning. If
1352 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1354 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1357 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
1359 return (ofproto->ofproto_class->set_flood_vlans
1360 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1364 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1365 * output for a mirror. */
1367 ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
1369 return (ofproto->ofproto_class->is_mirror_output_bundle
1370 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1374 /* Configuration of OpenFlow tables. */
1376 /* Returns the number of OpenFlow tables in 'ofproto'. */
1378 ofproto_get_n_tables(const struct ofproto *ofproto)
1380 return ofproto->n_tables;
1383 /* Returns the number of Controller visible OpenFlow tables
1384 * in 'ofproto'. This number will exclude Hidden tables.
1385 * This funtion's return value should be less or equal to that of
1386 * ofproto_get_n_tables() . */
1388 ofproto_get_n_visible_tables(const struct ofproto *ofproto)
1390 uint8_t n = ofproto->n_tables;
1392 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1393 * if present, are always at the end.) */
1394 while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) {
1401 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1402 * settings from 's'. 'table_id' must be in the range 0 through the number of
1403 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1405 * For read-only tables, only the name may be configured. */
1407 ofproto_configure_table(struct ofproto *ofproto, int table_id,
1408 const struct ofproto_table_settings *s)
1410 struct oftable *table;
1412 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
1413 table = &ofproto->tables[table_id];
1415 oftable_set_name(table, s->name);
1417 if (table->flags & OFTABLE_READONLY) {
1422 oftable_enable_eviction(table, s->groups, s->n_groups);
1424 oftable_disable_eviction(table);
1427 table->max_flows = s->max_flows;
1429 if (classifier_set_prefix_fields(&table->cls,
1430 s->prefix_fields, s->n_prefix_fields)) {
1431 /* XXX: Trigger revalidation. */
1434 ovs_mutex_lock(&ofproto_mutex);
1435 evict_rules_from_table(table);
1436 ovs_mutex_unlock(&ofproto_mutex);
1440 ofproto_has_snoops(const struct ofproto *ofproto)
1442 return connmgr_has_snoops(ofproto->connmgr);
1446 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
1448 connmgr_get_snoops(ofproto->connmgr, snoops);
1451 /* Deletes 'rule' from 'ofproto'.
1453 * Within an ofproto implementation, this function allows an ofproto
1454 * implementation to destroy any rules that remain when its ->destruct()
1455 * function is called. This function is not suitable for use elsewhere in an
1456 * ofproto implementation.
1458 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1459 * Cycle" in ofproto-provider.h. */
1461 ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
1462 OVS_EXCLUDED(ofproto_mutex)
1464 /* This skips the ofmonitor and flow-removed notifications because the
1465 * switch is being deleted and any OpenFlow channels have been or soon will
1467 ovs_mutex_lock(&ofproto_mutex);
1469 if (!rule->removed) {
1470 /* Make sure there is no postponed removal of the rule. */
1471 ovs_assert(cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION));
1473 if (!classifier_remove(&rule->ofproto->tables[rule->table_id].cls,
1477 ofproto_rule_remove__(rule->ofproto, rule);
1478 ofproto->ofproto_class->rule_delete(rule);
1479 ofproto_rule_unref(rule);
1481 ovs_mutex_unlock(&ofproto_mutex);
1485 ofproto_flush__(struct ofproto *ofproto)
1486 OVS_EXCLUDED(ofproto_mutex)
1488 struct oftable *table;
1490 /* This will flush all datapath flows. */
1491 if (ofproto->ofproto_class->flush) {
1492 ofproto->ofproto_class->flush(ofproto);
1495 /* XXX: There is a small race window here, where new datapath flows can be
1496 * created by upcall handlers based on the existing flow table. We can not
1497 * call ofproto class flush while holding 'ofproto_mutex' to prevent this,
1498 * as then we could deadlock on syncing with the handler threads waiting on
1499 * the same mutex. */
1501 ovs_mutex_lock(&ofproto_mutex);
1502 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1503 struct rule_collection rules;
1506 if (table->flags & OFTABLE_HIDDEN) {
1510 rule_collection_init(&rules);
1512 CLS_FOR_EACH (rule, cr, &table->cls) {
1513 rule_collection_add(&rules, rule);
1515 delete_flows__(&rules, OFPRR_DELETE, NULL);
1517 /* XXX: Concurrent handler threads may insert new learned flows based on
1518 * learn actions of the now deleted flows right after we release
1519 * 'ofproto_mutex'. */
1520 ovs_mutex_unlock(&ofproto_mutex);
1523 static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1526 ofproto_destroy__(struct ofproto *ofproto)
1527 OVS_EXCLUDED(ofproto_mutex)
1529 struct oftable *table;
1531 destroy_rule_executes(ofproto);
1532 delete_group(ofproto, OFPG_ALL);
1534 guarded_list_destroy(&ofproto->rule_executes);
1535 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1536 hmap_destroy(&ofproto->groups);
1538 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1539 free(ofproto->name);
1540 free(ofproto->type);
1541 free(ofproto->mfr_desc);
1542 free(ofproto->hw_desc);
1543 free(ofproto->sw_desc);
1544 free(ofproto->serial_desc);
1545 free(ofproto->dp_desc);
1546 hmap_destroy(&ofproto->ports);
1547 hmap_destroy(&ofproto->ofport_usage);
1548 shash_destroy(&ofproto->port_by_name);
1549 simap_destroy(&ofproto->ofp_requests);
1551 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1552 oftable_destroy(table);
1554 free(ofproto->tables);
1556 ovs_assert(hindex_is_empty(&ofproto->cookies));
1557 hindex_destroy(&ofproto->cookies);
1559 ovs_assert(hmap_is_empty(&ofproto->learned_cookies));
1560 hmap_destroy(&ofproto->learned_cookies);
1562 free(ofproto->vlan_bitmap);
1564 ofproto->ofproto_class->dealloc(ofproto);
1567 /* Destroying rules is doubly deferred, must have 'ofproto' around for them.
1568 * - 1st we defer the removal of the rules from the classifier
1569 * - 2nd we defer the actual destruction of the rules. */
1571 ofproto_destroy_defer__(struct ofproto *ofproto)
1572 OVS_EXCLUDED(ofproto_mutex)
1574 ovsrcu_postpone(ofproto_destroy__, ofproto);
1578 ofproto_destroy(struct ofproto *p)
1579 OVS_EXCLUDED(ofproto_mutex)
1581 struct ofport *ofport, *next_ofport;
1582 struct ofport_usage *usage, *next_usage;
1589 meter_delete(p, 1, p->meter_features.max_meters);
1590 p->meter_features.max_meters = 0;
1596 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
1597 ofport_destroy(ofport);
1600 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1601 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1605 p->ofproto_class->destruct(p);
1607 /* We should not postpone this because it involves deleting a listening
1608 * socket which we may want to reopen soon. 'connmgr' should not be used
1609 * by other threads */
1610 connmgr_destroy(p->connmgr);
1612 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1613 ovsrcu_postpone(ofproto_destroy_defer__, p);
1616 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1617 * kernel datapath, for example, this destroys the datapath in the kernel, and
1618 * with the netdev-based datapath, it tears down the data structures that
1619 * represent the datapath.
1621 * The datapath should not be currently open as an ofproto. */
1623 ofproto_delete(const char *name, const char *type)
1625 const struct ofproto_class *class = ofproto_class_find__(type);
1626 return (!class ? EAFNOSUPPORT
1627 : !class->del ? EACCES
1628 : class->del(type, name));
1632 process_port_change(struct ofproto *ofproto, int error, char *devname)
1634 if (error == ENOBUFS) {
1635 reinit_ports(ofproto);
1636 } else if (!error) {
1637 update_port(ofproto, devname);
1643 ofproto_type_run(const char *datapath_type)
1645 const struct ofproto_class *class;
1648 datapath_type = ofproto_normalize_type(datapath_type);
1649 class = ofproto_class_find__(datapath_type);
1651 error = class->type_run ? class->type_run(datapath_type) : 0;
1652 if (error && error != EAGAIN) {
1653 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
1654 datapath_type, ovs_strerror(error));
1660 ofproto_type_wait(const char *datapath_type)
1662 const struct ofproto_class *class;
1664 datapath_type = ofproto_normalize_type(datapath_type);
1665 class = ofproto_class_find__(datapath_type);
1667 if (class->type_wait) {
1668 class->type_wait(datapath_type);
1673 ofproto_run(struct ofproto *p)
1678 error = p->ofproto_class->run(p);
1679 if (error && error != EAGAIN) {
1680 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
1683 run_rule_executes(p);
1685 /* Restore the eviction group heap invariant occasionally. */
1686 if (p->eviction_group_timer < time_msec()) {
1689 p->eviction_group_timer = time_msec() + 1000;
1691 for (i = 0; i < p->n_tables; i++) {
1692 struct oftable *table = &p->tables[i];
1693 struct eviction_group *evg;
1696 if (!table->eviction_fields) {
1700 if (table->n_flows > 100000) {
1701 static struct vlog_rate_limit count_rl =
1702 VLOG_RATE_LIMIT_INIT(1, 1);
1703 VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
1704 " number of rules: %d", i, table->n_flows);
1707 ovs_mutex_lock(&ofproto_mutex);
1708 CLS_FOR_EACH (rule, cr, &table->cls) {
1709 if (rule->idle_timeout || rule->hard_timeout) {
1710 if (!rule->eviction_group) {
1711 eviction_group_add_rule(rule);
1713 heap_raw_change(&rule->evg_node,
1714 rule_eviction_priority(p, rule));
1719 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1720 heap_rebuild(&evg->rules);
1722 ovs_mutex_unlock(&ofproto_mutex);
1726 if (p->ofproto_class->port_poll) {
1729 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1730 process_port_change(p, error, devname);
1734 new_seq = seq_read(connectivity_seq_get());
1735 if (new_seq != p->change_seq) {
1736 struct sset devnames;
1737 const char *devname;
1738 struct ofport *ofport;
1740 /* Update OpenFlow port status for any port whose netdev has changed.
1742 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1743 * destroyed, so it's not safe to update ports directly from the
1744 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1745 * need this two-phase approach. */
1746 sset_init(&devnames);
1747 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1748 uint64_t port_change_seq;
1750 port_change_seq = netdev_get_change_seq(ofport->netdev);
1751 if (ofport->change_seq != port_change_seq) {
1752 ofport->change_seq = port_change_seq;
1753 sset_add(&devnames, netdev_get_name(ofport->netdev));
1756 SSET_FOR_EACH (devname, &devnames) {
1757 update_port(p, devname);
1759 sset_destroy(&devnames);
1761 p->change_seq = new_seq;
1764 connmgr_run(p->connmgr, handle_openflow);
1770 ofproto_wait(struct ofproto *p)
1772 p->ofproto_class->wait(p);
1773 if (p->ofproto_class->port_poll_wait) {
1774 p->ofproto_class->port_poll_wait(p);
1776 seq_wait(connectivity_seq_get(), p->change_seq);
1777 connmgr_wait(p->connmgr);
1781 ofproto_is_alive(const struct ofproto *p)
1783 return connmgr_has_controllers(p->connmgr);
1786 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1787 * memory_report(). */
1789 ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1791 const struct oftable *table;
1792 unsigned int n_rules;
1794 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
1797 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1798 n_rules += table->n_flows;
1800 simap_increase(usage, "rules", n_rules);
1802 if (ofproto->ofproto_class->get_memory_usage) {
1803 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1806 connmgr_get_memory_usage(ofproto->connmgr, usage);
1810 ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1812 const struct ofproto_class *class;
1814 datapath_type = ofproto_normalize_type(datapath_type);
1815 class = ofproto_class_find__(datapath_type);
1817 if (class && class->type_get_memory_usage) {
1818 class->type_get_memory_usage(datapath_type, usage);
1823 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
1826 connmgr_get_controller_info(ofproto->connmgr, info);
1830 ofproto_free_ofproto_controller_info(struct shash *info)
1832 connmgr_free_controller_info(info);
1835 /* Makes a deep copy of 'old' into 'port'. */
1837 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1839 port->name = xstrdup(old->name);
1840 port->type = xstrdup(old->type);
1841 port->ofp_port = old->ofp_port;
1844 /* Frees memory allocated to members of 'ofproto_port'.
1846 * Do not call this function on an ofproto_port obtained from
1847 * ofproto_port_dump_next(): that function retains ownership of the data in the
1850 ofproto_port_destroy(struct ofproto_port *ofproto_port)
1852 free(ofproto_port->name);
1853 free(ofproto_port->type);
1856 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1858 * This function provides no status indication. An error status for the entire
1859 * dump operation is provided when it is completed by calling
1860 * ofproto_port_dump_done().
1863 ofproto_port_dump_start(struct ofproto_port_dump *dump,
1864 const struct ofproto *ofproto)
1866 dump->ofproto = ofproto;
1867 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1871 /* Attempts to retrieve another port from 'dump', which must have been created
1872 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1873 * 'port' and returns true. On failure, returns false.
1875 * Failure might indicate an actual error or merely that the last port has been
1876 * dumped. An error status for the entire dump operation is provided when it
1877 * is completed by calling ofproto_port_dump_done().
1879 * The ofproto owns the data stored in 'port'. It will remain valid until at
1880 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1881 * ofproto_port_dump_done(). */
1883 ofproto_port_dump_next(struct ofproto_port_dump *dump,
1884 struct ofproto_port *port)
1886 const struct ofproto *ofproto = dump->ofproto;
1892 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1895 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1901 /* Completes port table dump operation 'dump', which must have been created
1902 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1903 * error-free, otherwise a positive errno value describing the problem. */
1905 ofproto_port_dump_done(struct ofproto_port_dump *dump)
1907 const struct ofproto *ofproto = dump->ofproto;
1909 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1912 return dump->error == EOF ? 0 : dump->error;
1915 /* Returns the type to pass to netdev_open() when a datapath of type
1916 * 'datapath_type' has a port of type 'port_type', for a few special
1917 * cases when a netdev type differs from a port type. For example, when
1918 * using the userspace datapath, a port of type "internal" needs to be
1921 * Returns either 'type' itself or a string literal, which must not be
1924 ofproto_port_open_type(const char *datapath_type, const char *port_type)
1926 const struct ofproto_class *class;
1928 datapath_type = ofproto_normalize_type(datapath_type);
1929 class = ofproto_class_find__(datapath_type);
1934 return (class->port_open_type
1935 ? class->port_open_type(datapath_type, port_type)
1939 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1940 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1941 * the port's OpenFlow port number.
1943 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1944 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1945 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1946 * 'ofp_portp' is non-null). */
1948 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
1949 ofp_port_t *ofp_portp)
1951 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
1954 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1956 const char *netdev_name = netdev_get_name(netdev);
1958 simap_put(&ofproto->ofp_requests, netdev_name,
1959 ofp_to_u16(ofp_port));
1960 update_port(ofproto, netdev_name);
1963 *ofp_portp = OFPP_NONE;
1965 struct ofproto_port ofproto_port;
1967 error = ofproto_port_query_by_name(ofproto,
1968 netdev_get_name(netdev),
1971 *ofp_portp = ofproto_port.ofp_port;
1972 ofproto_port_destroy(&ofproto_port);
1979 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1980 * initializes '*port' appropriately; on failure, returns a positive errno
1983 * The caller owns the data in 'ofproto_port' and must free it with
1984 * ofproto_port_destroy() when it is no longer needed. */
1986 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1987 struct ofproto_port *port)
1991 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1993 memset(port, 0, sizeof *port);
1998 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1999 * Returns 0 if successful, otherwise a positive errno. */
2001 ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
2003 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
2004 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
2005 struct simap_node *ofp_request_node;
2008 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
2009 if (ofp_request_node) {
2010 simap_delete(&ofproto->ofp_requests, ofp_request_node);
2013 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
2014 if (!error && ofport) {
2015 /* 'name' is the netdev's name and update_port() is going to close the
2016 * netdev. Just in case update_port() refers to 'name' after it
2017 * destroys 'ofport', make a copy of it around the update_port()
2019 char *devname = xstrdup(name);
2020 update_port(ofproto, devname);
2027 flow_mod_init(struct ofputil_flow_mod *fm,
2028 const struct match *match, int priority,
2029 const struct ofpact *ofpacts, size_t ofpacts_len,
2030 enum ofp_flow_mod_command command)
2032 memset(fm, 0, sizeof *fm);
2034 fm->priority = priority;
2037 fm->modify_cookie = false;
2039 fm->command = command;
2040 fm->idle_timeout = 0;
2041 fm->hard_timeout = 0;
2043 fm->buffer_id = UINT32_MAX;
2044 fm->out_port = OFPP_ANY;
2045 fm->out_group = OFPG_ANY;
2047 fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts);
2048 fm->ofpacts_len = ofpacts_len;
2049 fm->delete_reason = OFPRR_DELETE;
2053 simple_flow_mod(struct ofproto *ofproto,
2054 const struct match *match, int priority,
2055 const struct ofpact *ofpacts, size_t ofpacts_len,
2056 enum ofp_flow_mod_command command)
2058 struct ofputil_flow_mod fm;
2060 flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command);
2062 return handle_flow_mod__(ofproto, &fm, NULL);
2065 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
2066 * performs the 'n_actions' actions in 'actions'. The new flow will not
2069 * If cls_rule->priority is in the range of priorities supported by OpenFlow
2070 * (0...65535, inclusive) then the flow will be visible to OpenFlow
2071 * controllers; otherwise, it will be hidden.
2073 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
2075 * This is a helper function for in-band control and fail-open. */
2077 ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
2079 const struct ofpact *ofpacts, size_t ofpacts_len)
2080 OVS_EXCLUDED(ofproto_mutex)
2082 const struct rule *rule;
2085 /* First do a cheap check whether the rule we're looking for already exists
2086 * with the actions that we want. If it does, then we're done. */
2087 rule = rule_from_cls_rule(classifier_find_match_exactly(
2088 &ofproto->tables[0].cls, match, priority,
2091 const struct rule_actions *actions = rule_get_actions(rule);
2092 must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len,
2093 ofpacts, ofpacts_len);
2098 /* If there's no such rule or the rule doesn't have the actions we want,
2099 * fall back to a executing a full flow mod. We can't optimize this at
2100 * all because we didn't take enough locks above to ensure that the flow
2101 * table didn't already change beneath us. */
2103 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
2104 OFPFC_MODIFY_STRICT);
2108 /* Executes the flow modification specified in 'fm'. Returns 0 on success, or
2109 * an OFPERR_* OpenFlow error code on failure.
2111 * This is a helper function for in-band control and fail-open and the "learn"
2114 ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
2115 OVS_EXCLUDED(ofproto_mutex)
2117 /* Optimize for the most common case of a repeated learn action.
2118 * If an identical flow already exists we only need to update its
2119 * 'modified' time. */
2120 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
2121 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
2122 struct oftable *table = &ofproto->tables[fm->table_id];
2126 rule = rule_from_cls_rule(classifier_find_match_exactly(
2127 &table->cls, &fm->match, fm->priority,
2130 /* Reading many of the rule fields and writing on 'modified'
2131 * requires the rule->mutex. Also, rule->actions may change
2132 * if rule->mutex is not held. */
2133 const struct rule_actions *actions;
2135 ovs_mutex_lock(&rule->mutex);
2136 actions = rule_get_actions(rule);
2137 if (rule->idle_timeout == fm->idle_timeout
2138 && rule->hard_timeout == fm->hard_timeout
2139 && rule->importance == fm->importance
2140 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
2141 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
2142 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
2143 actions->ofpacts, actions->ofpacts_len)) {
2144 /* Rule already exists and need not change, only update the
2145 modified timestamp. */
2146 rule->modified = time_msec();
2149 ovs_mutex_unlock(&rule->mutex);
2157 return handle_flow_mod__(ofproto, fm, NULL);
2160 /* Searches for a rule with matching criteria exactly equal to 'target' in
2161 * ofproto's table 0 and, if it finds one, deletes it.
2163 * This is a helper function for in-band control and fail-open. */
2165 ofproto_delete_flow(struct ofproto *ofproto,
2166 const struct match *target, int priority)
2167 OVS_EXCLUDED(ofproto_mutex)
2169 struct classifier *cls = &ofproto->tables[0].cls;
2172 /* First do a cheap check whether the rule we're looking for has already
2173 * been deleted. If so, then we're done. */
2174 rule = rule_from_cls_rule(classifier_find_match_exactly(
2175 cls, target, priority, CLS_MAX_VERSION));
2180 /* Execute a flow mod. We can't optimize this at all because we didn't
2181 * take enough locks above to ensure that the flow table didn't already
2182 * change beneath us. */
2183 simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT);
2186 /* Delete all of the flows from all of ofproto's flow tables, then reintroduce
2187 * the flows required by in-band control and fail-open. */
2189 ofproto_flush_flows(struct ofproto *ofproto)
2191 COVERAGE_INC(ofproto_flush);
2192 ofproto_flush__(ofproto);
2193 connmgr_flushed(ofproto->connmgr);
2197 reinit_ports(struct ofproto *p)
2199 struct ofproto_port_dump dump;
2200 struct sset devnames;
2201 struct ofport *ofport;
2202 struct ofproto_port ofproto_port;
2203 const char *devname;
2205 COVERAGE_INC(ofproto_reinit_ports);
2207 sset_init(&devnames);
2208 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2209 sset_add(&devnames, netdev_get_name(ofport->netdev));
2211 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2212 sset_add(&devnames, ofproto_port.name);
2215 SSET_FOR_EACH (devname, &devnames) {
2216 update_port(p, devname);
2218 sset_destroy(&devnames);
2222 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2226 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2227 port_idx = port_idx ? port_idx : UINT16_MAX;
2229 if (port_idx >= ofproto->max_ports
2230 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2231 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2232 long long int last_used_at, lru = LLONG_MAX;
2234 /* Search for a free OpenFlow port number. We try not to
2235 * immediately reuse them to prevent problems due to old
2238 * We limit the automatically assigned port numbers to the lower half
2239 * of the port range, to reserve the upper half for assignment by
2242 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2243 ofproto->alloc_port_no = 1;
2245 last_used_at = ofport_get_usage(ofproto,
2246 u16_to_ofp(ofproto->alloc_port_no));
2247 if (!last_used_at) {
2248 port_idx = ofproto->alloc_port_no;
2250 } else if ( last_used_at < time_msec() - 60*60*1000) {
2251 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2252 * more than an hour ago, consider it usable. */
2253 ofport_remove_usage(ofproto,
2254 u16_to_ofp(ofproto->alloc_port_no));
2255 port_idx = ofproto->alloc_port_no;
2257 } else if (last_used_at < lru) {
2259 lru_ofport = ofproto->alloc_port_no;
2262 if (ofproto->alloc_port_no == end_port_no) {
2264 port_idx = lru_ofport;
2271 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2272 return u16_to_ofp(port_idx);
2276 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2278 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2279 ofport_set_usage(ofproto, ofp_port, time_msec());
2283 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2284 * pointer if the netdev cannot be opened. On success, also fills in
2286 static struct netdev *
2287 ofport_open(struct ofproto *ofproto,
2288 struct ofproto_port *ofproto_port,
2289 struct ofputil_phy_port *pp)
2291 enum netdev_flags flags;
2292 struct netdev *netdev;
2295 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2297 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2298 "cannot be opened (%s)",
2300 ofproto_port->name, ofproto_port->ofp_port,
2301 ofproto_port->name, ovs_strerror(error));
2305 if (ofproto_port->ofp_port == OFPP_NONE) {
2306 if (!strcmp(ofproto->name, ofproto_port->name)) {
2307 ofproto_port->ofp_port = OFPP_LOCAL;
2309 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2310 ofproto_port->name);
2313 pp->port_no = ofproto_port->ofp_port;
2314 netdev_get_etheraddr(netdev, pp->hw_addr);
2315 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2316 netdev_get_flags(netdev, &flags);
2317 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2318 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2319 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2320 &pp->supported, &pp->peer);
2321 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2322 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2327 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2328 * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are
2331 ofport_equal(const struct ofputil_phy_port *a,
2332 const struct ofputil_phy_port *b)
2334 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2335 && a->state == b->state
2336 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2337 && a->curr == b->curr
2338 && a->advertised == b->advertised
2339 && a->supported == b->supported
2340 && a->peer == b->peer
2341 && a->curr_speed == b->curr_speed
2342 && a->max_speed == b->max_speed);
2345 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2346 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2347 * one with the same name or port number). */
2349 ofport_install(struct ofproto *p,
2350 struct netdev *netdev, const struct ofputil_phy_port *pp)
2352 const char *netdev_name = netdev_get_name(netdev);
2353 struct ofport *ofport;
2356 /* Create ofport. */
2357 ofport = p->ofproto_class->port_alloc();
2362 ofport->ofproto = p;
2363 ofport->netdev = netdev;
2364 ofport->change_seq = netdev_get_change_seq(netdev);
2366 ofport->ofp_port = pp->port_no;
2367 ofport->created = time_msec();
2369 /* Add port to 'p'. */
2370 hmap_insert(&p->ports, &ofport->hmap_node,
2371 hash_ofp_port(ofport->ofp_port));
2372 shash_add(&p->port_by_name, netdev_name, ofport);
2374 update_mtu(p, ofport);
2376 /* Let the ofproto_class initialize its private data. */
2377 error = p->ofproto_class->port_construct(ofport);
2381 connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD);
2385 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2386 p->name, netdev_name, ovs_strerror(error));
2388 ofport_destroy__(ofport);
2390 netdev_close(netdev);
2394 /* Removes 'ofport' from 'p' and destroys it. */
2396 ofport_remove(struct ofport *ofport)
2398 connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp,
2400 ofport_destroy(ofport);
2403 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2406 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2408 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2410 ofport_remove(port);
2414 /* Updates 'port' with new 'pp' description.
2416 * Does not handle a name or port number change. The caller must implement
2417 * such a change as a delete followed by an add. */
2419 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2421 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2422 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2423 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2424 port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN)
2425 | (pp->state & OFPUTIL_PS_LINK_DOWN));
2426 port->pp.curr = pp->curr;
2427 port->pp.advertised = pp->advertised;
2428 port->pp.supported = pp->supported;
2429 port->pp.peer = pp->peer;
2430 port->pp.curr_speed = pp->curr_speed;
2431 port->pp.max_speed = pp->max_speed;
2433 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2434 &port->pp, OFPPR_MODIFY);
2437 /* Update OpenFlow 'state' in 'port' and notify controller. */
2439 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2441 if (port->pp.state != state) {
2442 port->pp.state = state;
2443 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2444 &port->pp, OFPPR_MODIFY);
2449 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2451 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2453 if (port->ofproto->ofproto_class->set_realdev) {
2454 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2456 if (port->ofproto->ofproto_class->set_stp_port) {
2457 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2459 if (port->ofproto->ofproto_class->set_rstp_port) {
2460 port->ofproto->ofproto_class->set_rstp_port(port, NULL);
2462 if (port->ofproto->ofproto_class->set_cfm) {
2463 port->ofproto->ofproto_class->set_cfm(port, NULL);
2465 if (port->ofproto->ofproto_class->bundle_remove) {
2466 port->ofproto->ofproto_class->bundle_remove(port);
2472 ofport_destroy__(struct ofport *port)
2474 struct ofproto *ofproto = port->ofproto;
2475 const char *name = netdev_get_name(port->netdev);
2477 hmap_remove(&ofproto->ports, &port->hmap_node);
2478 shash_delete(&ofproto->port_by_name,
2479 shash_find(&ofproto->port_by_name, name));
2481 netdev_close(port->netdev);
2482 ofproto->ofproto_class->port_dealloc(port);
2486 ofport_destroy(struct ofport *port)
2489 dealloc_ofp_port(port->ofproto, port->ofp_port);
2490 port->ofproto->ofproto_class->port_destruct(port);
2491 ofport_destroy__(port);
2496 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2498 struct ofport *port;
2500 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2502 if (port->ofp_port == ofp_port) {
2509 static long long int
2510 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2512 struct ofport_usage *usage;
2514 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2515 &ofproto->ofport_usage) {
2516 if (usage->ofp_port == ofp_port) {
2517 return usage->last_used;
2524 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2525 long long int last_used)
2527 struct ofport_usage *usage;
2528 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2529 &ofproto->ofport_usage) {
2530 if (usage->ofp_port == ofp_port) {
2531 usage->last_used = last_used;
2535 ovs_assert(last_used == LLONG_MAX);
2537 usage = xmalloc(sizeof *usage);
2538 usage->ofp_port = ofp_port;
2539 usage->last_used = last_used;
2540 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2541 hash_ofp_port(ofp_port));
2545 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2547 struct ofport_usage *usage;
2548 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2549 &ofproto->ofport_usage) {
2550 if (usage->ofp_port == ofp_port) {
2551 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2559 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2561 struct ofproto *ofproto = port->ofproto;
2564 if (ofproto->ofproto_class->port_get_stats) {
2565 error = ofproto->ofproto_class->port_get_stats(port, stats);
2574 update_port(struct ofproto *ofproto, const char *name)
2576 struct ofproto_port ofproto_port;
2577 struct ofputil_phy_port pp;
2578 struct netdev *netdev;
2579 struct ofport *port;
2581 COVERAGE_INC(ofproto_update_port);
2583 /* Fetch 'name''s location and properties from the datapath. */
2584 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2585 ? ofport_open(ofproto, &ofproto_port, &pp)
2589 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2590 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2591 struct netdev *old_netdev = port->netdev;
2593 /* 'name' hasn't changed location. Any properties changed? */
2594 if (!ofport_equal(&port->pp, &pp)) {
2595 ofport_modified(port, &pp);
2598 update_mtu(ofproto, port);
2600 /* Install the newly opened netdev in case it has changed.
2601 * Don't close the old netdev yet in case port_modified has to
2602 * remove a retained reference to it.*/
2603 port->netdev = netdev;
2604 port->change_seq = netdev_get_change_seq(netdev);
2606 if (port->ofproto->ofproto_class->port_modified) {
2607 port->ofproto->ofproto_class->port_modified(port);
2610 netdev_close(old_netdev);
2612 /* If 'port' is nonnull then its name differs from 'name' and thus
2613 * we should delete it. If we think there's a port named 'name'
2614 * then its port number must be wrong now so delete it too. */
2616 ofport_remove(port);
2618 ofport_remove_with_name(ofproto, name);
2619 ofport_install(ofproto, netdev, &pp);
2622 /* Any port named 'name' is gone now. */
2623 ofport_remove_with_name(ofproto, name);
2625 ofproto_port_destroy(&ofproto_port);
2629 init_ports(struct ofproto *p)
2631 struct ofproto_port_dump dump;
2632 struct ofproto_port ofproto_port;
2633 struct shash_node *node, *next;
2635 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2636 const char *name = ofproto_port.name;
2638 if (shash_find(&p->port_by_name, name)) {
2639 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2642 struct ofputil_phy_port pp;
2643 struct netdev *netdev;
2645 /* Check if an OpenFlow port number had been requested. */
2646 node = shash_find(&init_ofp_ports, name);
2648 const struct iface_hint *iface_hint = node->data;
2649 simap_put(&p->ofp_requests, name,
2650 ofp_to_u16(iface_hint->ofp_port));
2653 netdev = ofport_open(p, &ofproto_port, &pp);
2655 ofport_install(p, netdev, &pp);
2656 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2657 p->alloc_port_no = MAX(p->alloc_port_no,
2658 ofp_to_u16(ofproto_port.ofp_port));
2664 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2665 struct iface_hint *iface_hint = node->data;
2667 if (!strcmp(iface_hint->br_name, p->name)) {
2668 free(iface_hint->br_name);
2669 free(iface_hint->br_type);
2671 shash_delete(&init_ofp_ports, node);
2678 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2679 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2681 find_min_mtu(struct ofproto *p)
2683 struct ofport *ofport;
2686 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2687 struct netdev *netdev = ofport->netdev;
2690 /* Skip any internal ports, since that's what we're trying to
2692 if (!strcmp(netdev_get_type(netdev), "internal")) {
2696 if (netdev_get_mtu(netdev, &dev_mtu)) {
2699 if (!mtu || dev_mtu < mtu) {
2704 return mtu ? mtu: ETH_PAYLOAD_MAX;
2707 /* Update MTU of all datapath devices on 'p' to the minimum of the
2708 * non-datapath ports in event of 'port' added or changed. */
2710 update_mtu(struct ofproto *p, struct ofport *port)
2712 struct ofport *ofport;
2713 struct netdev *netdev = port->netdev;
2714 int dev_mtu, old_min;
2716 if (netdev_get_mtu(netdev, &dev_mtu)) {
2720 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2721 if (dev_mtu > p->min_mtu) {
2722 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2723 dev_mtu = p->min_mtu;
2726 port->mtu = dev_mtu;
2730 /* For non-internal port find new min mtu. */
2731 old_min = p->min_mtu;
2732 port->mtu = dev_mtu;
2733 p->min_mtu = find_min_mtu(p);
2734 if (p->min_mtu == old_min) {
2738 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2739 struct netdev *netdev = ofport->netdev;
2741 if (!strcmp(netdev_get_type(netdev), "internal")) {
2742 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2743 ofport->mtu = p->min_mtu;
2750 ofproto_rule_destroy__(struct rule *rule)
2751 OVS_NO_THREAD_SAFETY_ANALYSIS
2753 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2754 rule_actions_destroy(rule_get_actions(rule));
2755 ovs_mutex_destroy(&rule->mutex);
2756 rule->ofproto->ofproto_class->rule_dealloc(rule);
2760 rule_destroy_cb(struct rule *rule)
2762 rule->ofproto->ofproto_class->rule_destruct(rule);
2763 ofproto_rule_destroy__(rule);
2767 ofproto_rule_ref(struct rule *rule)
2770 ovs_refcount_ref(&rule->ref_count);
2775 ofproto_rule_try_ref(struct rule *rule)
2778 return ovs_refcount_try_ref_rcu(&rule->ref_count);
2783 /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
2784 * ref_count reaches 0.
2786 * Use of RCU allows short term use (between RCU quiescent periods) without
2787 * keeping a reference. A reference must be taken if the rule needs to
2788 * stay around accross the RCU quiescent periods. */
2790 ofproto_rule_unref(struct rule *rule)
2792 if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) {
2793 ovsrcu_postpone(rule_destroy_cb, rule);
2798 remove_rule_rcu__(struct rule *rule)
2799 OVS_REQUIRES(ofproto_mutex)
2801 struct ofproto *ofproto = rule->ofproto;
2802 struct oftable *table = &ofproto->tables[rule->table_id];
2804 ovs_assert(!cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION));
2805 if (!classifier_remove(&table->cls, &rule->cr)) {
2808 ofproto->ofproto_class->rule_delete(rule);
2809 ofproto_rule_unref(rule);
2813 remove_rule_rcu(struct rule *rule)
2814 OVS_EXCLUDED(ofproto_mutex)
2816 ovs_mutex_lock(&ofproto_mutex);
2817 remove_rule_rcu__(rule);
2818 ovs_mutex_unlock(&ofproto_mutex);
2821 /* Removes and deletes rules from a NULL-terminated array of rule pointers. */
2823 remove_rules_rcu(struct rule **rules)
2824 OVS_EXCLUDED(ofproto_mutex)
2826 struct rule **orig_rules = rules;
2829 struct ofproto *ofproto = rules[0]->ofproto;
2830 unsigned long tables[BITMAP_N_LONGS(256)];
2834 memset(tables, 0, sizeof tables);
2836 ovs_mutex_lock(&ofproto_mutex);
2837 while ((rule = *rules++)) {
2838 /* Defer once for each new table. This defers the subtable cleanup
2839 * until later, so that when removing large number of flows the
2840 * operation is faster. */
2841 if (!bitmap_is_set(tables, rule->table_id)) {
2842 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
2844 bitmap_set1(tables, rule->table_id);
2845 classifier_defer(cls);
2847 remove_rule_rcu__(rule);
2850 BITMAP_FOR_EACH_1(table_id, 256, tables) {
2851 struct classifier *cls = &ofproto->tables[table_id].cls;
2853 classifier_publish(cls);
2855 ovs_mutex_unlock(&ofproto_mutex);
2862 ofproto_group_ref(struct ofgroup *group)
2865 ovs_refcount_ref(&group->ref_count);
2870 ofproto_group_unref(struct ofgroup *group)
2872 if (group && ovs_refcount_unref(&group->ref_count) == 1) {
2873 group->ofproto->ofproto_class->group_destruct(group);
2874 ofputil_bucket_list_destroy(&group->buckets);
2875 group->ofproto->ofproto_class->group_dealloc(group);
2879 static uint32_t get_provider_meter_id(const struct ofproto *,
2880 uint32_t of_meter_id);
2882 /* Creates and returns a new 'struct rule_actions', whose actions are a copy
2883 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2884 const struct rule_actions *
2885 rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len)
2887 struct rule_actions *actions;
2889 actions = xmalloc(sizeof *actions + ofpacts_len);
2890 actions->ofpacts_len = ofpacts_len;
2891 actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0;
2892 memcpy(actions->ofpacts, ofpacts, ofpacts_len);
2894 actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL)
2900 /* Free the actions after the RCU quiescent period is reached. */
2902 rule_actions_destroy(const struct rule_actions *actions)
2905 ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions));
2909 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2910 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2912 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2913 OVS_REQUIRES(ofproto_mutex)
2915 if (port == OFPP_ANY) {
2918 const struct rule_actions *actions = rule_get_actions(rule);
2919 return ofpacts_output_to_port(actions->ofpacts,
2920 actions->ofpacts_len, port);
2924 /* Returns true if 'rule' has group and equals group_id. */
2926 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2927 OVS_REQUIRES(ofproto_mutex)
2929 if (group_id == OFPG_ANY) {
2932 const struct rule_actions *actions = rule_get_actions(rule);
2933 return ofpacts_output_to_group(actions->ofpacts,
2934 actions->ofpacts_len, group_id);
2939 rule_execute_destroy(struct rule_execute *e)
2941 ofproto_rule_unref(e->rule);
2942 list_remove(&e->list_node);
2946 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2947 * by passing them to the ofproto provider. */
2949 run_rule_executes(struct ofproto *ofproto)
2950 OVS_EXCLUDED(ofproto_mutex)
2952 struct rule_execute *e, *next;
2953 struct ovs_list executes;
2955 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2956 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2959 flow_extract(e->packet, &flow);
2960 flow.in_port.ofp_port = e->in_port;
2961 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2963 rule_execute_destroy(e);
2967 /* Destroys and discards all "rule_execute" operations queued up in
2968 * ofproto->rule_executes. */
2970 destroy_rule_executes(struct ofproto *ofproto)
2972 struct rule_execute *e, *next;
2973 struct ovs_list executes;
2975 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2976 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2977 dp_packet_delete(e->packet);
2978 rule_execute_destroy(e);
2983 rule_is_readonly(const struct rule *rule)
2985 const struct oftable *table = &rule->ofproto->tables[rule->table_id];
2986 return (table->flags & OFTABLE_READONLY) != 0;
2990 hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id)
2992 uint64_t cookie = (OVS_FORCE uint64_t) cookie_;
2993 return hash_3words(cookie, cookie >> 32, table_id);
2997 learned_cookies_update_one__(struct ofproto *ofproto,
2998 const struct ofpact_learn *learn,
2999 int delta, struct ovs_list *dead_cookies)
3000 OVS_REQUIRES(ofproto_mutex)
3002 uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id);
3003 struct learned_cookie *c;
3005 HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) {
3006 if (c->cookie == learn->cookie && c->table_id == learn->table_id) {
3008 ovs_assert(c->n >= 0);
3011 hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node);
3012 list_push_back(dead_cookies, &c->u.list_node);
3019 ovs_assert(delta > 0);
3020 c = xmalloc(sizeof *c);
3021 hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash);
3022 c->cookie = learn->cookie;
3023 c->table_id = learn->table_id;
3027 static const struct ofpact_learn *
3028 next_learn_with_delete(const struct rule_actions *actions,
3029 const struct ofpact_learn *start)
3031 const struct ofpact *pos;
3033 for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts;
3034 pos < ofpact_end(actions->ofpacts, actions->ofpacts_len);
3035 pos = ofpact_next(pos)) {
3036 if (pos->type == OFPACT_LEARN) {
3037 const struct ofpact_learn *learn = ofpact_get_LEARN(pos);
3038 if (learn->flags & NX_LEARN_F_DELETE_LEARNED) {
3048 learned_cookies_update__(struct ofproto *ofproto,
3049 const struct rule_actions *actions,
3050 int delta, struct ovs_list *dead_cookies)
3051 OVS_REQUIRES(ofproto_mutex)
3053 if (actions->has_learn_with_delete) {
3054 const struct ofpact_learn *learn;
3056 for (learn = next_learn_with_delete(actions, NULL); learn;
3057 learn = next_learn_with_delete(actions, learn)) {
3058 learned_cookies_update_one__(ofproto, learn, delta, dead_cookies);
3064 learned_cookies_inc(struct ofproto *ofproto,
3065 const struct rule_actions *actions)
3066 OVS_REQUIRES(ofproto_mutex)
3068 learned_cookies_update__(ofproto, actions, +1, NULL);
3072 learned_cookies_dec(struct ofproto *ofproto,
3073 const struct rule_actions *actions,
3074 struct ovs_list *dead_cookies)
3075 OVS_REQUIRES(ofproto_mutex)
3077 learned_cookies_update__(ofproto, actions, -1, dead_cookies);
3081 learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies)
3082 OVS_REQUIRES(ofproto_mutex)
3084 struct learned_cookie *c;
3086 LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) {
3087 struct rule_criteria criteria;
3088 struct rule_collection rules;
3091 match_init_catchall(&match);
3092 rule_criteria_init(&criteria, c->table_id, &match, 0, CLS_MAX_VERSION,
3093 c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY);
3094 rule_criteria_require_rw(&criteria, false);
3095 collect_rules_loose(ofproto, &criteria, &rules);
3096 rule_criteria_destroy(&criteria);
3097 delete_flows__(&rules, OFPRR_DELETE, NULL);
3104 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
3106 ofconn_send_reply(ofconn, make_echo_reply(oh));
3111 query_tables(struct ofproto *ofproto,
3112 struct ofputil_table_features **featuresp,
3113 struct ofputil_table_stats **statsp)
3115 struct mf_bitmap rw_fields = oxm_writable_fields();
3116 struct mf_bitmap match = oxm_matchable_fields();
3117 struct mf_bitmap mask = oxm_maskable_fields();
3119 struct ofputil_table_features *features;
3120 struct ofputil_table_stats *stats;
3123 features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
3124 for (i = 0; i < ofproto->n_tables; i++) {
3125 struct ofputil_table_features *f = &features[i];
3128 sprintf(f->name, "table%d", i);
3129 f->metadata_match = OVS_BE64_MAX;
3130 f->metadata_write = OVS_BE64_MAX;
3131 atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
3132 f->max_entries = 1000000;
3134 bool more_tables = false;
3135 for (int j = i + 1; j < ofproto->n_tables; j++) {
3136 if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) {
3137 bitmap_set1(f->nonmiss.next, j);
3141 f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
3143 f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
3145 f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
3146 f->nonmiss.write.set_fields = rw_fields;
3147 f->nonmiss.apply = f->nonmiss.write;
3148 f->miss = f->nonmiss;
3152 f->wildcard = match;
3156 stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
3157 for (i = 0; i < ofproto->n_tables; i++) {
3158 struct ofputil_table_stats *s = &stats[i];
3161 s->active_count = ofproto->tables[i].n_flows;
3163 s->active_count -= connmgr_count_hidden_rules(
3171 ofproto->ofproto_class->query_tables(ofproto, features, stats);
3173 for (i = 0; i < ofproto->n_tables; i++) {
3174 const struct oftable *table = &ofproto->tables[i];
3175 struct ofputil_table_features *f = &features[i];
3178 ovs_strzcpy(f->name, table->name, sizeof f->name);
3181 if (table->max_flows < f->max_entries) {
3182 f->max_entries = table->max_flows;
3188 query_switch_features(struct ofproto *ofproto,
3189 bool *arp_match_ip, uint64_t *ofpacts)
3191 struct ofputil_table_features *features, *f;
3193 *arp_match_ip = false;
3196 query_tables(ofproto, &features, NULL);
3197 for (f = features; f < &features[ofproto->n_tables]; f++) {
3198 *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
3199 if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
3200 bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
3201 *arp_match_ip = true;
3207 ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
3211 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
3213 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3214 struct ofputil_switch_features features;
3215 struct ofport *port;
3219 query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
3221 features.datapath_id = ofproto->datapath_id;
3222 features.n_buffers = pktbuf_capacity();
3223 features.n_tables = ofproto_get_n_visible_tables(ofproto);
3224 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
3225 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS |
3226 OFPUTIL_C_GROUP_STATS);
3228 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
3230 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
3231 features.auxiliary_id = 0;
3232 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
3234 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3235 ofputil_put_switch_features_port(&port->pp, b);
3238 ofconn_send_reply(ofconn, b);
3243 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
3245 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3246 struct ofp_switch_config *osc;
3247 enum ofp_config_flags flags;
3251 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
3252 osc = ofpbuf_put_uninit(buf, sizeof *osc);
3253 flags = ofproto->frag_handling;
3254 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3255 if (oh->version < OFP13_VERSION
3256 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
3257 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
3259 osc->flags = htons(flags);
3260 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
3261 ofconn_send_reply(ofconn, buf);
3267 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
3269 const struct ofp_switch_config *osc = ofpmsg_body(oh);
3270 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3271 uint16_t flags = ntohs(osc->flags);
3273 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
3274 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
3275 enum ofp_config_flags cur = ofproto->frag_handling;
3276 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
3278 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
3280 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
3281 ofproto->frag_handling = next;
3283 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
3285 ofputil_frag_handling_to_string(next));
3289 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3290 ofconn_set_invalid_ttl_to_controller(ofconn,
3291 (oh->version < OFP13_VERSION
3292 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
3294 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
3299 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3300 * error message code for the caller to propagate upward. Otherwise, returns
3303 * The log message mentions 'msg_type'. */
3305 reject_slave_controller(struct ofconn *ofconn)
3307 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
3308 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
3309 return OFPERR_OFPBRC_IS_SLAVE;
3315 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
3318 * - If they use a meter, then 'ofproto' has that meter configured.
3320 * - If they use any groups, then 'ofproto' has that group configured.
3322 * Returns 0 if successful, otherwise an OpenFlow error. */
3324 ofproto_check_ofpacts(struct ofproto *ofproto,
3325 const struct ofpact ofpacts[], size_t ofpacts_len)
3327 const struct ofpact *a;
3330 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
3331 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
3332 return OFPERR_OFPMMFC_INVALID_METER;
3335 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
3336 if (a->type == OFPACT_GROUP
3337 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
3338 return OFPERR_OFPBAC_BAD_OUT_GROUP;
3346 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
3348 struct ofproto *p = ofconn_get_ofproto(ofconn);
3349 struct ofputil_packet_out po;
3350 struct dp_packet *payload;
3351 uint64_t ofpacts_stub[1024 / 8];
3352 struct ofpbuf ofpacts;
3356 COVERAGE_INC(ofproto_packet_out);
3358 error = reject_slave_controller(ofconn);
3363 /* Decode message. */
3364 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
3365 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
3367 goto exit_free_ofpacts;
3369 if (ofp_to_u16(po.in_port) >= p->max_ports
3370 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
3371 error = OFPERR_OFPBRC_BAD_PORT;
3372 goto exit_free_ofpacts;
3376 if (po.buffer_id != UINT32_MAX) {
3377 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
3378 if (error || !payload) {
3379 goto exit_free_ofpacts;
3382 /* Ensure that the L3 header is 32-bit aligned. */
3383 payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2);
3386 /* Verify actions against packet, then send packet if successful. */
3387 flow_extract(payload, &flow);
3388 flow.in_port.ofp_port = po.in_port;
3389 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
3391 error = p->ofproto_class->packet_out(p, payload, &flow,
3392 po.ofpacts, po.ofpacts_len);
3394 dp_packet_delete(payload);
3397 ofpbuf_uninit(&ofpacts);
3403 update_port_config(struct ofconn *ofconn, struct ofport *port,
3404 enum ofputil_port_config config,
3405 enum ofputil_port_config mask)
3407 enum ofputil_port_config toggle = (config ^ port->pp.config) & mask;
3409 if (toggle & OFPUTIL_PC_PORT_DOWN
3410 && (config & OFPUTIL_PC_PORT_DOWN
3411 ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL)
3412 : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) {
3413 /* We tried to bring the port up or down, but it failed, so don't
3414 * update the "down" bit. */
3415 toggle &= ~OFPUTIL_PC_PORT_DOWN;
3419 enum ofputil_port_config old_config = port->pp.config;
3420 port->pp.config ^= toggle;
3421 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
3422 connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp,
3428 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
3430 struct ofproto *p = ofconn_get_ofproto(ofconn);
3431 struct ofputil_port_mod pm;
3432 struct ofport *port;
3435 error = reject_slave_controller(ofconn);
3440 error = ofputil_decode_port_mod(oh, &pm, false);
3445 port = ofproto_get_port(p, pm.port_no);
3447 return OFPERR_OFPPMFC_BAD_PORT;
3448 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
3449 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3451 update_port_config(ofconn, port, pm.config, pm.mask);
3453 netdev_set_advertisements(port->netdev, pm.advertise);
3460 handle_desc_stats_request(struct ofconn *ofconn,
3461 const struct ofp_header *request)
3463 static const char *default_mfr_desc = "Nicira, Inc.";
3464 static const char *default_hw_desc = "Open vSwitch";
3465 static const char *default_sw_desc = VERSION;
3466 static const char *default_serial_desc = "None";
3467 static const char *default_dp_desc = "None";
3469 struct ofproto *p = ofconn_get_ofproto(ofconn);
3470 struct ofp_desc_stats *ods;
3473 msg = ofpraw_alloc_stats_reply(request, 0);
3474 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3475 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3476 sizeof ods->mfr_desc);
3477 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3478 sizeof ods->hw_desc);
3479 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3480 sizeof ods->sw_desc);
3481 ovs_strlcpy(ods->serial_num,
3482 p->serial_desc ? p->serial_desc : default_serial_desc,
3483 sizeof ods->serial_num);
3484 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3485 sizeof ods->dp_desc);
3486 ofconn_send_reply(ofconn, msg);
3492 handle_table_stats_request(struct ofconn *ofconn,
3493 const struct ofp_header *request)
3495 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3496 struct ofputil_table_features *features;
3497 struct ofputil_table_stats *stats;
3498 struct ofpbuf *reply;
3501 query_tables(ofproto, &features, &stats);
3503 reply = ofputil_encode_table_stats_reply(request);
3504 for (i = 0; i < ofproto->n_tables; i++) {
3505 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3506 ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
3509 ofconn_send_reply(ofconn, reply);
3518 handle_table_features_request(struct ofconn *ofconn,
3519 const struct ofp_header *request)
3521 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3522 struct ofputil_table_features *features;
3523 struct ovs_list replies;
3527 ofpbuf_use_const(&msg, request, ntohs(request->length));
3528 ofpraw_pull_assert(&msg);
3529 if (msg.size || ofpmp_more(request)) {
3530 return OFPERR_OFPTFFC_EPERM;
3533 query_tables(ofproto, &features, NULL);
3535 ofpmp_init(&replies, request);
3536 for (i = 0; i < ofproto->n_tables; i++) {
3537 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3538 ofputil_append_table_features_reply(&features[i], &replies);
3541 ofconn_send_replies(ofconn, &replies);
3549 append_port_stat(struct ofport *port, struct ovs_list *replies)
3551 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3553 calc_duration(port->created, time_msec(),
3554 &ops.duration_sec, &ops.duration_nsec);
3556 /* Intentionally ignore return value, since errors will set
3557 * 'stats' to all-1s, which is correct for OpenFlow, and
3558 * netdev_get_stats() will log errors. */
3559 ofproto_port_get_stats(port, &ops.stats);
3561 ofputil_append_port_stat(replies, &ops);
3565 handle_port_request(struct ofconn *ofconn,
3566 const struct ofp_header *request, ofp_port_t port_no,
3567 void (*cb)(struct ofport *, struct ovs_list *replies))
3569 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3570 struct ofport *port;
3571 struct ovs_list replies;
3573 ofpmp_init(&replies, request);
3574 if (port_no != OFPP_ANY) {
3575 port = ofproto_get_port(ofproto, port_no);
3580 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3585 ofconn_send_replies(ofconn, &replies);
3589 handle_port_stats_request(struct ofconn *ofconn,
3590 const struct ofp_header *request)
3595 error = ofputil_decode_port_stats_request(request, &port_no);
3597 handle_port_request(ofconn, request, port_no, append_port_stat);
3603 append_port_desc(struct ofport *port, struct ovs_list *replies)
3605 ofputil_append_port_desc_stats_reply(&port->pp, replies);
3609 handle_port_desc_stats_request(struct ofconn *ofconn,
3610 const struct ofp_header *request)
3615 error = ofputil_decode_port_desc_stats_request(request, &port_no);
3617 handle_port_request(ofconn, request, port_no, append_port_desc);
3623 hash_cookie(ovs_be64 cookie)
3625 return hash_uint64((OVS_FORCE uint64_t)cookie);
3629 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3630 OVS_REQUIRES(ofproto_mutex)
3632 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3633 hash_cookie(rule->flow_cookie));
3637 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3638 OVS_REQUIRES(ofproto_mutex)
3640 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3644 calc_duration(long long int start, long long int now,
3645 uint32_t *sec, uint32_t *nsec)
3647 long long int msecs = now - start;
3648 *sec = msecs / 1000;
3649 *nsec = (msecs % 1000) * (1000 * 1000);
3652 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3653 * true if 'table_id' is OK, false otherwise. */
3655 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3657 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
3660 static struct oftable *
3661 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3663 struct oftable *table;
3665 for (table = &ofproto->tables[table_id];
3666 table < &ofproto->tables[ofproto->n_tables];
3668 if (!(table->flags & OFTABLE_HIDDEN)) {
3676 static struct oftable *
3677 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3679 if (table_id == 0xff) {
3680 return next_visible_table(ofproto, 0);
3681 } else if (table_id < ofproto->n_tables) {
3682 return &ofproto->tables[table_id];
3688 static struct oftable *
3689 next_matching_table(const struct ofproto *ofproto,
3690 const struct oftable *table, uint8_t table_id)
3692 return (table_id == 0xff
3693 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3697 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3699 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3700 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3702 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3703 * only once, for that table. (This can be used to access tables marked
3706 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3707 * entered at all. (Perhaps you should have validated TABLE_ID with
3708 * check_table_id().)
3710 * All parameters are evaluated multiple times.
3712 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3713 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3715 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3717 /* Initializes 'criteria' in a straightforward way based on the other
3720 * By default, the criteria include flows that are read-only, on the assumption
3721 * that the collected flows won't be modified. Call rule_criteria_require_rw()
3722 * if flows will be modified.
3724 * For "loose" matching, the 'priority' parameter is unimportant and may be
3727 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3728 const struct match *match, int priority, long long version,
3729 ovs_be64 cookie, ovs_be64 cookie_mask,
3730 ofp_port_t out_port, uint32_t out_group)
3732 criteria->table_id = table_id;
3733 cls_rule_init(&criteria->cr, match, priority, version);
3734 criteria->cookie = cookie;
3735 criteria->cookie_mask = cookie_mask;
3736 criteria->out_port = out_port;
3737 criteria->out_group = out_group;
3739 /* We ordinarily want to skip hidden rules, but there has to be a way for
3740 * code internal to OVS to modify and delete them, so if the criteria
3741 * specify a priority that can only be for a hidden flow, then allow hidden
3742 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3743 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3745 criteria->include_hidden = priority > UINT16_MAX;
3747 /* We assume that the criteria are being used to collect flows for reading
3748 * but not modification. Thus, we should collect read-only flows. */
3749 criteria->include_readonly = true;
3752 /* By default, criteria initialized by rule_criteria_init() will match flows
3753 * that are read-only, on the assumption that the collected flows won't be
3754 * modified. Call this function to match only flows that are be modifiable.
3756 * Specify 'can_write_readonly' as false in ordinary circumstances, true if the
3757 * caller has special privileges that allow it to modify even "read-only"
3760 rule_criteria_require_rw(struct rule_criteria *criteria,
3761 bool can_write_readonly)
3763 criteria->include_readonly = can_write_readonly;
3767 rule_criteria_destroy(struct rule_criteria *criteria)
3769 cls_rule_destroy(&criteria->cr);
3773 rule_collection_init(struct rule_collection *rules)
3775 rules->rules = rules->stub;
3777 rules->capacity = ARRAY_SIZE(rules->stub);
3781 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3783 if (rules->n >= rules->capacity) {
3784 size_t old_size, new_size;
3786 old_size = rules->capacity * sizeof *rules->rules;
3787 rules->capacity *= 2;
3788 new_size = rules->capacity * sizeof *rules->rules;
3790 if (rules->rules == rules->stub) {
3791 rules->rules = xmalloc(new_size);
3792 memcpy(rules->rules, rules->stub, old_size);
3794 rules->rules = xrealloc(rules->rules, new_size);
3798 rules->rules[rules->n++] = rule;
3802 rule_collection_ref(struct rule_collection *rules)
3803 OVS_REQUIRES(ofproto_mutex)
3807 for (i = 0; i < rules->n; i++) {
3808 ofproto_rule_ref(rules->rules[i]);
3813 rule_collection_unref(struct rule_collection *rules)
3817 for (i = 0; i < rules->n; i++) {
3818 ofproto_rule_unref(rules->rules[i]);
3822 /* Returns a NULL-terminated array of rule pointers,
3823 * destroys 'rules'. */
3824 static struct rule **
3825 rule_collection_detach(struct rule_collection *rules)
3827 struct rule **rule_array;
3829 rule_collection_add(rules, NULL);
3831 if (rules->rules == rules->stub) {
3832 rules->rules = xmemdup(rules->rules, rules->n * sizeof *rules->rules);
3835 rule_array = rules->rules;
3836 rule_collection_init(rules);
3842 rule_collection_destroy(struct rule_collection *rules)
3844 if (rules->rules != rules->stub) {
3848 /* Make repeated destruction harmless. */
3849 rule_collection_init(rules);
3852 /* Schedules postponed removal of rules, destroys 'rules'. */
3854 rule_collection_remove_postponed(struct rule_collection *rules)
3855 OVS_REQUIRES(ofproto_mutex)
3858 if (rules->n == 1) {
3859 ovsrcu_postpone(remove_rule_rcu, rules->rules[0]);
3861 ovsrcu_postpone(remove_rules_rcu, rule_collection_detach(rules));
3866 /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This
3867 * function verifies most of the criteria in 'c' itself, but the caller must
3868 * check 'c->cr' itself.
3870 * Rules that have already been marked for removal are not collected.
3872 * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and
3873 * 'c' only includes modifiable rules). */
3875 collect_rule(struct rule *rule, const struct rule_criteria *c,
3876 struct rule_collection *rules, size_t *n_readonly)
3877 OVS_REQUIRES(ofproto_mutex)
3879 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3880 && ofproto_rule_has_out_port(rule, c->out_port)
3881 && ofproto_rule_has_out_group(rule, c->out_group)
3882 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)
3883 && (!rule_is_hidden(rule) || c->include_hidden)
3884 && cls_rule_visible_in_version(&rule->cr, c->cr.version)) {
3885 /* Rule matches all the criteria... */
3886 if (!rule_is_readonly(rule) || c->include_readonly) {
3888 rule_collection_add(rules, rule);
3890 /* ...except it's read-only. */
3896 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3897 * on classifiers rules are done in the "loose" way required for OpenFlow
3898 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3901 * Returns 0 on success, otherwise an OpenFlow error code. */
3903 collect_rules_loose(struct ofproto *ofproto,
3904 const struct rule_criteria *criteria,
3905 struct rule_collection *rules)
3906 OVS_REQUIRES(ofproto_mutex)
3908 struct oftable *table;
3909 enum ofperr error = 0;
3910 size_t n_readonly = 0;
3912 rule_collection_init(rules);
3914 if (!check_table_id(ofproto, criteria->table_id)) {
3915 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3919 if (criteria->cookie_mask == OVS_BE64_MAX) {
3922 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3923 hash_cookie(criteria->cookie),
3924 &ofproto->cookies) {
3925 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
3926 collect_rule(rule, criteria, rules, &n_readonly);
3930 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3933 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) {
3934 collect_rule(rule, criteria, rules, &n_readonly);
3940 if (!error && !rules->n && n_readonly) {
3941 /* We didn't find any rules to modify. We did find some read-only
3942 * rules that we're not allowed to modify, so report that. */
3943 error = OFPERR_OFPBRC_EPERM;
3946 rule_collection_destroy(rules);
3951 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3952 * on classifiers rules are done in the "strict" way required for OpenFlow
3953 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3954 * rules on list 'rules'.
3956 * Returns 0 on success, otherwise an OpenFlow error code. */
3958 collect_rules_strict(struct ofproto *ofproto,
3959 const struct rule_criteria *criteria,
3960 struct rule_collection *rules)
3961 OVS_REQUIRES(ofproto_mutex)
3963 struct oftable *table;
3964 size_t n_readonly = 0;
3965 enum ofperr error = 0;
3967 rule_collection_init(rules);
3969 if (!check_table_id(ofproto, criteria->table_id)) {
3970 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3974 if (criteria->cookie_mask == OVS_BE64_MAX) {
3977 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3978 hash_cookie(criteria->cookie),
3979 &ofproto->cookies) {
3980 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
3981 collect_rule(rule, criteria, rules, &n_readonly);
3985 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3988 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3989 &table->cls, &criteria->cr));
3991 collect_rule(rule, criteria, rules, &n_readonly);
3997 if (!error && !rules->n && n_readonly) {
3998 /* We didn't find any rules to modify. We did find some read-only
3999 * rules that we're not allowed to modify, so report that. */
4000 error = OFPERR_OFPBRC_EPERM;
4003 rule_collection_destroy(rules);
4008 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
4009 * forced into the range of a uint16_t. */
4011 age_secs(long long int age_ms)
4013 return (age_ms < 0 ? 0
4014 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
4015 : (unsigned int) age_ms / 1000);
4019 handle_flow_stats_request(struct ofconn *ofconn,
4020 const struct ofp_header *request)
4021 OVS_EXCLUDED(ofproto_mutex)
4023 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4024 struct ofputil_flow_stats_request fsr;
4025 struct rule_criteria criteria;
4026 struct rule_collection rules;
4027 struct ovs_list replies;
4031 error = ofputil_decode_flow_stats_request(&fsr, request);
4036 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, CLS_MAX_VERSION,
4037 fsr.cookie, fsr.cookie_mask, fsr.out_port,
4040 ovs_mutex_lock(&ofproto_mutex);
4041 error = collect_rules_loose(ofproto, &criteria, &rules);
4042 rule_criteria_destroy(&criteria);
4044 rule_collection_ref(&rules);
4046 ovs_mutex_unlock(&ofproto_mutex);
4052 ofpmp_init(&replies, request);
4053 for (i = 0; i < rules.n; i++) {
4054 struct rule *rule = rules.rules[i];
4055 long long int now = time_msec();
4056 struct ofputil_flow_stats fs;
4057 long long int created, used, modified;
4058 const struct rule_actions *actions;
4059 enum ofputil_flow_mod_flags flags;
4061 ovs_mutex_lock(&rule->mutex);
4062 fs.cookie = rule->flow_cookie;
4063 fs.idle_timeout = rule->idle_timeout;
4064 fs.hard_timeout = rule->hard_timeout;
4065 fs.importance = rule->importance;
4066 created = rule->created;
4067 modified = rule->modified;
4068 actions = rule_get_actions(rule);
4069 flags = rule->flags;
4070 ovs_mutex_unlock(&rule->mutex);
4072 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
4073 &fs.byte_count, &used);
4075 minimatch_expand(&rule->cr.match, &fs.match);
4076 fs.table_id = rule->table_id;
4077 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
4078 fs.priority = rule->cr.priority;
4079 fs.idle_age = age_secs(now - used);
4080 fs.hard_age = age_secs(now - modified);
4081 fs.ofpacts = actions->ofpacts;
4082 fs.ofpacts_len = actions->ofpacts_len;
4085 ofputil_append_flow_stats_reply(&fs, &replies);
4088 rule_collection_unref(&rules);
4089 rule_collection_destroy(&rules);
4091 ofconn_send_replies(ofconn, &replies);
4097 flow_stats_ds(struct rule *rule, struct ds *results)
4099 uint64_t packet_count, byte_count;
4100 const struct rule_actions *actions;
4101 long long int created, used;
4103 rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4104 &byte_count, &used);
4106 ovs_mutex_lock(&rule->mutex);
4107 actions = rule_get_actions(rule);
4108 created = rule->created;
4109 ovs_mutex_unlock(&rule->mutex);
4111 if (rule->table_id != 0) {
4112 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
4114 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
4115 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
4116 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
4117 cls_rule_format(&rule->cr, results);
4118 ds_put_char(results, ',');
4120 ds_put_cstr(results, "actions=");
4121 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
4123 ds_put_cstr(results, "\n");
4126 /* Adds a pretty-printed description of all flows to 'results', including
4127 * hidden flows (e.g., set up by in-band control). */
4129 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
4131 struct oftable *table;
4133 OFPROTO_FOR_EACH_TABLE (table, p) {
4136 CLS_FOR_EACH (rule, cr, &table->cls) {
4137 flow_stats_ds(rule, results);
4142 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
4143 * '*engine_type' and '*engine_id', respectively. */
4145 ofproto_get_netflow_ids(const struct ofproto *ofproto,
4146 uint8_t *engine_type, uint8_t *engine_id)
4148 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
4151 /* Checks the status change of CFM on 'ofport'.
4153 * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */
4155 ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
4157 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4158 return (ofport && ofproto->ofproto_class->cfm_status_changed
4159 ? ofproto->ofproto_class->cfm_status_changed(ofport)
4163 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
4164 * Returns 0 if the port's CFM status was successfully stored into
4165 * '*status'. Returns positive errno if the port did not have CFM
4168 * The caller must provide and own '*status', and must free 'status->rmps'.
4169 * '*status' is indeterminate if the return value is non-zero. */
4171 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
4172 struct cfm_status *status)
4174 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4175 return (ofport && ofproto->ofproto_class->get_cfm_status
4176 ? ofproto->ofproto_class->get_cfm_status(ofport, status)
4181 handle_aggregate_stats_request(struct ofconn *ofconn,
4182 const struct ofp_header *oh)
4183 OVS_EXCLUDED(ofproto_mutex)
4185 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4186 struct ofputil_flow_stats_request request;
4187 struct ofputil_aggregate_stats stats;
4188 bool unknown_packets, unknown_bytes;
4189 struct rule_criteria criteria;
4190 struct rule_collection rules;
4191 struct ofpbuf *reply;
4195 error = ofputil_decode_flow_stats_request(&request, oh);
4200 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
4201 CLS_MAX_VERSION, request.cookie, request.cookie_mask,
4202 request.out_port, request.out_group);
4204 ovs_mutex_lock(&ofproto_mutex);
4205 error = collect_rules_loose(ofproto, &criteria, &rules);
4206 rule_criteria_destroy(&criteria);
4208 rule_collection_ref(&rules);
4210 ovs_mutex_unlock(&ofproto_mutex);
4216 memset(&stats, 0, sizeof stats);
4217 unknown_packets = unknown_bytes = false;
4218 for (i = 0; i < rules.n; i++) {
4219 struct rule *rule = rules.rules[i];
4220 uint64_t packet_count;
4221 uint64_t byte_count;
4224 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4225 &byte_count, &used);
4227 if (packet_count == UINT64_MAX) {
4228 unknown_packets = true;
4230 stats.packet_count += packet_count;
4233 if (byte_count == UINT64_MAX) {
4234 unknown_bytes = true;
4236 stats.byte_count += byte_count;
4241 if (unknown_packets) {
4242 stats.packet_count = UINT64_MAX;
4244 if (unknown_bytes) {
4245 stats.byte_count = UINT64_MAX;
4248 rule_collection_unref(&rules);
4249 rule_collection_destroy(&rules);
4251 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
4252 ofconn_send_reply(ofconn, reply);
4257 struct queue_stats_cbdata {
4258 struct ofport *ofport;
4259 struct ovs_list replies;
4264 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
4265 const struct netdev_queue_stats *stats)
4267 struct ofputil_queue_stats oqs;
4269 oqs.port_no = cbdata->ofport->pp.port_no;
4270 oqs.queue_id = queue_id;
4271 oqs.tx_bytes = stats->tx_bytes;
4272 oqs.tx_packets = stats->tx_packets;
4273 oqs.tx_errors = stats->tx_errors;
4274 if (stats->created != LLONG_MIN) {
4275 calc_duration(stats->created, cbdata->now,
4276 &oqs.duration_sec, &oqs.duration_nsec);
4278 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
4280 ofputil_append_queue_stat(&cbdata->replies, &oqs);
4284 handle_queue_stats_dump_cb(uint32_t queue_id,
4285 struct netdev_queue_stats *stats,
4288 struct queue_stats_cbdata *cbdata = cbdata_;
4290 put_queue_stats(cbdata, queue_id, stats);
4294 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
4295 struct queue_stats_cbdata *cbdata)
4297 cbdata->ofport = port;
4298 if (queue_id == OFPQ_ALL) {
4299 netdev_dump_queue_stats(port->netdev,
4300 handle_queue_stats_dump_cb, cbdata);
4302 struct netdev_queue_stats stats;
4304 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
4305 put_queue_stats(cbdata, queue_id, &stats);
4307 return OFPERR_OFPQOFC_BAD_QUEUE;
4314 handle_queue_stats_request(struct ofconn *ofconn,
4315 const struct ofp_header *rq)
4317 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4318 struct queue_stats_cbdata cbdata;
4319 struct ofport *port;
4321 struct ofputil_queue_stats_request oqsr;
4323 COVERAGE_INC(ofproto_queue_req);
4325 ofpmp_init(&cbdata.replies, rq);
4326 cbdata.now = time_msec();
4328 error = ofputil_decode_queue_stats_request(rq, &oqsr);
4333 if (oqsr.port_no == OFPP_ANY) {
4334 error = OFPERR_OFPQOFC_BAD_QUEUE;
4335 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
4336 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
4341 port = ofproto_get_port(ofproto, oqsr.port_no);
4343 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
4344 : OFPERR_OFPQOFC_BAD_PORT);
4347 ofconn_send_replies(ofconn, &cbdata.replies);
4349 ofpbuf_list_delete(&cbdata.replies);
4356 evict_rules_from_table(struct oftable *table)
4357 OVS_REQUIRES(ofproto_mutex)
4359 enum ofperr error = 0;
4360 struct rule_collection rules;
4361 unsigned int count = table->n_flows;
4362 unsigned int max_flows = table->max_flows;
4364 rule_collection_init(&rules);
4366 while (count-- > max_flows) {
4369 if (!choose_rule_to_evict(table, &rule)) {
4370 error = OFPERR_OFPFMFC_TABLE_FULL;
4373 eviction_group_remove_rule(rule);
4374 rule_collection_add(&rules, rule);
4377 delete_flows__(&rules, OFPRR_EVICTION, NULL);
4383 is_conjunction(const struct ofpact *ofpacts, size_t ofpacts_len)
4385 return ofpacts_len > 0 && ofpacts->type == OFPACT_CONJUNCTION;
4389 get_conjunctions(const struct ofputil_flow_mod *fm,
4390 struct cls_conjunction **conjsp, size_t *n_conjsp)
4391 OVS_REQUIRES(ofproto_mutex)
4393 struct cls_conjunction *conjs = NULL;
4396 if (is_conjunction(fm->ofpacts, fm->ofpacts_len)) {
4397 const struct ofpact *ofpact;
4401 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4405 conjs = xzalloc(n_conjs * sizeof *conjs);
4407 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4408 struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact);
4409 conjs[i].clause = oc->clause;
4410 conjs[i].n_clauses = oc->n_clauses;
4411 conjs[i].id = oc->id;
4417 *n_conjsp = n_conjs;
4420 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
4421 * in which no matching flow already exists in the flow table.
4423 * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on
4424 * success, or an OpenFlow error code on failure.
4426 * On successful return the caller must complete the operation either by
4427 * calling add_flow_finish(), or add_flow_revert() if the operation needs to
4430 * The caller retains ownership of 'fm->ofpacts'. */
4432 add_flow_start(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4433 struct rule **old_rule, struct rule **new_rule)
4434 OVS_REQUIRES(ofproto_mutex)
4436 struct oftable *table;
4440 struct cls_conjunction *conjs;
4444 if (!check_table_id(ofproto, fm->table_id)) {
4445 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4450 if (fm->table_id == 0xff) {
4451 if (ofproto->ofproto_class->rule_choose_table) {
4452 error = ofproto->ofproto_class->rule_choose_table(ofproto,
4458 ovs_assert(table_id < ofproto->n_tables);
4462 } else if (fm->table_id < ofproto->n_tables) {
4463 table_id = fm->table_id;
4465 return OFPERR_OFPBRC_BAD_TABLE_ID;
4468 table = &ofproto->tables[table_id];
4469 if (table->flags & OFTABLE_READONLY
4470 && !(fm->flags & OFPUTIL_FF_NO_READONLY)) {
4471 return OFPERR_OFPBRC_EPERM;
4474 if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)
4475 && !match_has_default_hidden_fields(&fm->match)) {
4476 VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set "
4477 "non-default values to hidden fields", ofproto->name);
4478 return OFPERR_OFPBRC_EPERM;
4481 cls_rule_init(&cr, &fm->match, fm->priority, ofproto->tables_version + 1);
4483 /* Check for the existence of an identical rule.
4484 * This will not return rules earlier marked for removal. */
4485 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
4488 /* Check for overlap, if requested. */
4489 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP
4490 && classifier_rule_overlaps(&table->cls, &cr)) {
4491 cls_rule_destroy(&cr);
4492 return OFPERR_OFPFMFC_OVERLAP;
4495 /* If necessary, evict an existing rule to clear out space. */
4496 if (table->n_flows >= table->max_flows) {
4497 if (!choose_rule_to_evict(table, &rule)) {
4498 error = OFPERR_OFPFMFC_TABLE_FULL;
4499 cls_rule_destroy(&cr);
4502 eviction_group_remove_rule(rule);
4503 /* Marks '*old_rule' as an evicted rule rather than replaced rule.
4505 fm->delete_reason = OFPRR_EVICTION;
4509 fm->modify_cookie = true;
4512 /* Allocate new rule. */
4513 error = replace_rule_create(ofproto, fm, &cr, table - ofproto->tables,
4519 get_conjunctions(fm, &conjs, &n_conjs);
4520 replace_rule_start(ofproto, rule, *new_rule, conjs, n_conjs);
4526 /* Revert the effects of add_flow_start(). */
4528 add_flow_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4529 struct rule *old_rule, struct rule *new_rule)
4530 OVS_REQUIRES(ofproto_mutex)
4532 if (old_rule && fm->delete_reason == OFPRR_EVICTION) {
4533 /* Revert the eviction. */
4534 eviction_group_add_rule(old_rule);
4537 replace_rule_revert(ofproto, old_rule, new_rule);
4540 /* To be called after version bump. */
4542 add_flow_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4543 const struct flow_mod_requester *req,
4544 struct rule *old_rule, struct rule *new_rule)
4545 OVS_REQUIRES(ofproto_mutex)
4547 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4549 replace_rule_finish(ofproto, fm, req, old_rule, new_rule, &dead_cookies);
4550 learned_cookies_flush(ofproto, &dead_cookies);
4553 ovsrcu_postpone(remove_rule_rcu, old_rule);
4555 if (minimask_get_vid_mask(&new_rule->cr.match.mask) == VLAN_VID_MASK) {
4556 if (ofproto->vlan_bitmap) {
4557 uint16_t vid = miniflow_get_vid(&new_rule->cr.match.flow);
4559 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
4560 bitmap_set1(ofproto->vlan_bitmap, vid);
4561 ofproto->vlans_changed = true;
4564 ofproto->vlans_changed = true;
4568 ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0,
4569 req ? req->ofconn : NULL,
4570 req ? req->request->xid : 0, NULL);
4573 send_buffered_packet(req, fm->buffer_id, new_rule);
4576 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4578 /* Create a new rule based on attributes in 'fm', match in 'cr', 'table_id',
4579 * and 'old_rule'. Note that the rule is NOT inserted into a any data
4580 * structures yet. Takes ownership of 'cr'. */
4582 replace_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4583 struct cls_rule *cr, uint8_t table_id,
4584 struct rule *old_rule, struct rule **new_rule)
4589 /* Allocate new rule. */
4590 rule = ofproto->ofproto_class->rule_alloc();
4592 cls_rule_destroy(cr);
4593 VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name);
4594 return OFPERR_OFPFMFC_UNKNOWN;
4597 /* Initialize base state. */
4598 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
4599 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr);
4600 ovs_refcount_init(&rule->ref_count);
4601 rule->flow_cookie = fm->new_cookie;
4602 rule->created = rule->modified = time_msec();
4604 ovs_mutex_init(&rule->mutex);
4605 ovs_mutex_lock(&rule->mutex);
4606 rule->idle_timeout = fm->idle_timeout;
4607 rule->hard_timeout = fm->hard_timeout;
4608 rule->importance = fm->importance;
4610 *CONST_CAST(uint8_t *, &rule->table_id) = table_id;
4611 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4612 *CONST_CAST(const struct rule_actions **, &rule->actions)
4613 = rule_actions_create(fm->ofpacts, fm->ofpacts_len);
4614 list_init(&rule->meter_list_node);
4615 rule->eviction_group = NULL;
4616 list_init(&rule->expirable);
4617 rule->monitor_flags = 0;
4618 rule->add_seqno = 0;
4619 rule->modify_seqno = 0;
4621 /* Copy values from old rule for modify semantics. */
4622 if (old_rule && fm->delete_reason != OFPRR_EVICTION) {
4623 /* 'fm' says that */
4624 bool change_cookie = (fm->modify_cookie
4625 && fm->new_cookie != OVS_BE64_MAX
4626 && fm->new_cookie != old_rule->flow_cookie);
4628 ovs_mutex_lock(&old_rule->mutex);
4629 if (fm->command != OFPFC_ADD) {
4630 rule->idle_timeout = old_rule->idle_timeout;
4631 rule->hard_timeout = old_rule->hard_timeout;
4632 rule->importance = old_rule->importance;
4633 rule->flags = old_rule->flags;
4634 rule->created = old_rule->created;
4636 if (!change_cookie) {
4637 rule->flow_cookie = old_rule->flow_cookie;
4639 ovs_mutex_unlock(&old_rule->mutex);
4641 ovs_mutex_unlock(&rule->mutex);
4643 /* Construct rule, initializing derived state. */
4644 error = ofproto->ofproto_class->rule_construct(rule);
4646 ofproto_rule_destroy__(rule);
4650 rule->removed = true; /* Not yet in ofproto data structures. */
4657 replace_rule_start(struct ofproto *ofproto,
4658 struct rule *old_rule, struct rule *new_rule,
4659 struct cls_conjunction *conjs, size_t n_conjs)
4661 struct oftable *table = &ofproto->tables[new_rule->table_id];
4663 /* 'old_rule' may be either an evicted rule or replaced rule. */
4665 /* Mark the old rule for removal in the next version. */
4666 cls_rule_make_invisible_in_version(&old_rule->cr,
4667 ofproto->tables_version + 1,
4668 ofproto->tables_version);
4672 /* Insert flow to the classifier, so that later flow_mods may relate
4673 * to it. This is reversible, in case later errors require this to
4675 ofproto_rule_insert__(ofproto, new_rule);
4676 /* Make the new rule visible for classifier lookups only from the next
4678 classifier_insert(&table->cls, &new_rule->cr, conjs, n_conjs);
4681 static void replace_rule_revert(struct ofproto *ofproto,
4682 struct rule *old_rule, struct rule *new_rule)
4684 struct oftable *table = &ofproto->tables[new_rule->table_id];
4687 /* Restore the original visibility of the old rule. */
4688 cls_rule_restore_visibility(&old_rule->cr);
4690 /* Restore table's rule count. */
4694 /* Remove the new rule immediately. It was never visible to lookups. */
4695 if (!classifier_remove(&table->cls, &new_rule->cr)) {
4698 ofproto_rule_remove__(ofproto, new_rule);
4699 /* The rule was not inserted to the ofproto provider, so we can
4700 * release it without deleting it from the ofproto provider. */
4701 ofproto_rule_unref(new_rule);
4704 /* Adds the 'new_rule', replacing the 'old_rule'. */
4706 replace_rule_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4707 const struct flow_mod_requester *req,
4708 struct rule *old_rule, struct rule *new_rule,
4709 struct ovs_list *dead_cookies)
4710 OVS_REQUIRES(ofproto_mutex)
4712 bool forward_stats = !(fm->flags & OFPUTIL_FF_RESET_COUNTS);
4713 struct rule *replaced_rule;
4715 replaced_rule = fm->delete_reason != OFPRR_EVICTION ? old_rule : NULL;
4717 /* Insert the new flow to the ofproto provider. A non-NULL 'replaced_rule'
4718 * is a duplicate rule the 'new_rule' is replacing. The provider should
4719 * link the stats from the old rule to the new one if 'forward_stats' is
4720 * 'true'. The 'replaced_rule' will be deleted right after this call. */
4721 ofproto->ofproto_class->rule_insert(new_rule, replaced_rule,
4723 learned_cookies_inc(ofproto, rule_get_actions(new_rule));
4726 const struct rule_actions *old_actions = rule_get_actions(old_rule);
4728 /* Remove the old rule from data structures. Removal from the
4729 * classifier and the deletion of the rule is RCU postponed by the
4731 ofproto_rule_remove__(ofproto, old_rule);
4732 learned_cookies_dec(ofproto, old_actions, dead_cookies);
4734 if (replaced_rule) {
4735 enum nx_flow_update_event event = fm->command == OFPFC_ADD
4736 ? NXFME_ADDED : NXFME_MODIFIED;
4738 bool change_cookie = (fm->modify_cookie
4739 && fm->new_cookie != OVS_BE64_MAX
4740 && fm->new_cookie != old_rule->flow_cookie);
4742 bool change_actions = !ofpacts_equal(fm->ofpacts,
4744 old_actions->ofpacts,
4745 old_actions->ofpacts_len);
4747 if (event != NXFME_MODIFIED || change_actions || change_cookie) {
4748 ofmonitor_report(ofproto->connmgr, new_rule, event, 0,
4749 req ? req->ofconn : NULL,
4750 req ? req->request->xid : 0,
4751 change_actions ? old_actions : NULL);
4754 /* XXX: This is slight duplication with delete_flows_finish__() */
4756 /* XXX: This call should done when rule's refcount reaches
4757 * zero to get accurate stats in the flow removed message. */
4758 ofproto_rule_send_removed(old_rule, OFPRR_EVICTION);
4760 ofmonitor_report(ofproto->connmgr, old_rule, NXFME_DELETED,
4762 req ? req->ofconn : NULL,
4763 req ? req->request->xid : 0, NULL);
4769 modify_flows_start__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4770 struct rule_collection *old_rules,
4771 struct rule_collection *new_rules)
4772 OVS_REQUIRES(ofproto_mutex)
4776 rule_collection_init(new_rules);
4778 if (old_rules->n > 0) {
4779 struct cls_conjunction *conjs;
4783 /* Create a new 'modified' rule for each old rule. */
4784 for (i = 0; i < old_rules->n; i++) {
4785 struct rule *old_rule = old_rules->rules[i];
4786 struct rule *new_rule;
4789 cls_rule_clone_in_version(&cr, &old_rule->cr,
4790 ofproto->tables_version + 1);
4791 error = replace_rule_create(ofproto, fm, &cr, old_rule->table_id,
4792 old_rule, &new_rule);
4794 rule_collection_add(new_rules, new_rule);
4796 rule_collection_unref(new_rules);
4797 rule_collection_destroy(new_rules);
4801 ovs_assert(new_rules->n == old_rules->n);
4803 get_conjunctions(fm, &conjs, &n_conjs);
4804 for (i = 0; i < old_rules->n; i++) {
4805 replace_rule_start(ofproto, old_rules->rules[i],
4806 new_rules->rules[i], conjs, n_conjs);
4809 } else if (!(fm->cookie_mask != htonll(0)
4810 || fm->new_cookie == OVS_BE64_MAX)) {
4811 /* No match, add a new flow. */
4812 error = add_flow_start(ofproto, fm, &old_rules->rules[0],
4813 &new_rules->rules[0]);
4815 ovs_assert(fm->delete_reason == OFPRR_EVICTION
4816 || !old_rules->rules[0]);
4826 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4829 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4832 modify_flows_start_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4833 struct rule_collection *old_rules,
4834 struct rule_collection *new_rules)
4835 OVS_REQUIRES(ofproto_mutex)
4837 struct rule_criteria criteria;
4840 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION,
4841 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4842 rule_criteria_require_rw(&criteria,
4843 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4844 error = collect_rules_loose(ofproto, &criteria, old_rules);
4845 rule_criteria_destroy(&criteria);
4848 error = modify_flows_start__(ofproto, fm, old_rules, new_rules);
4852 rule_collection_destroy(old_rules);
4858 modify_flows_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4859 struct rule_collection *old_rules,
4860 struct rule_collection *new_rules)
4861 OVS_REQUIRES(ofproto_mutex)
4863 /* Old rules were not changed yet, only need to revert new rules. */
4864 if (old_rules->n == 0 && new_rules->n == 1) {
4865 add_flow_revert(ofproto, fm, old_rules->rules[0], new_rules->rules[0]);
4866 } else if (old_rules->n > 0) {
4867 for (size_t i = 0; i < old_rules->n; i++) {
4868 replace_rule_revert(ofproto, old_rules->rules[i],
4869 new_rules->rules[i]);
4871 rule_collection_destroy(new_rules);
4872 rule_collection_destroy(old_rules);
4877 modify_flows_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4878 const struct flow_mod_requester *req,
4879 struct rule_collection *old_rules,
4880 struct rule_collection *new_rules)
4881 OVS_REQUIRES(ofproto_mutex)
4883 if (old_rules->n == 0 && new_rules->n == 1) {
4884 add_flow_finish(ofproto, fm, req, old_rules->rules[0],
4885 new_rules->rules[0]);
4886 } else if (old_rules->n > 0) {
4887 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4889 ovs_assert(new_rules->n == old_rules->n);
4891 for (size_t i = 0; i < old_rules->n; i++) {
4892 replace_rule_finish(ofproto, fm, req, old_rules->rules[i],
4893 new_rules->rules[i], &dead_cookies);
4895 learned_cookies_flush(ofproto, &dead_cookies);
4896 rule_collection_remove_postponed(old_rules);
4898 send_buffered_packet(req, fm->buffer_id, new_rules->rules[0]);
4899 rule_collection_destroy(new_rules);
4903 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4904 * code on failure. */
4906 modify_flow_start_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4907 struct rule_collection *old_rules,
4908 struct rule_collection *new_rules)
4909 OVS_REQUIRES(ofproto_mutex)
4911 struct rule_criteria criteria;
4914 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4915 CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, OFPP_ANY,
4917 rule_criteria_require_rw(&criteria,
4918 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4919 error = collect_rules_strict(ofproto, &criteria, old_rules);
4920 rule_criteria_destroy(&criteria);
4923 /* collect_rules_strict() can return max 1 rule. */
4924 error = modify_flows_start__(ofproto, fm, old_rules, new_rules);
4928 rule_collection_destroy(old_rules);
4933 /* OFPFC_DELETE implementation. */
4936 delete_flows_start__(struct ofproto *ofproto,
4937 const struct rule_collection *rules)
4938 OVS_REQUIRES(ofproto_mutex)
4940 for (size_t i = 0; i < rules->n; i++) {
4941 struct rule *rule = rules->rules[i];
4942 struct oftable *table = &ofproto->tables[rule->table_id];
4945 cls_rule_make_invisible_in_version(&rule->cr,
4946 ofproto->tables_version + 1,
4947 ofproto->tables_version);
4952 delete_flows_finish__(struct ofproto *ofproto,
4953 struct rule_collection *rules,
4954 enum ofp_flow_removed_reason reason,
4955 const struct flow_mod_requester *req)
4956 OVS_REQUIRES(ofproto_mutex)
4959 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4961 for (size_t i = 0; i < rules->n; i++) {
4962 struct rule *rule = rules->rules[i];
4964 ofproto_rule_send_removed(rule, reason);
4965 ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
4966 req ? req->ofconn : NULL,
4967 req ? req->request->xid : 0, NULL);
4968 ofproto_rule_remove__(ofproto, rule);
4969 learned_cookies_dec(ofproto, rule_get_actions(rule),
4972 rule_collection_remove_postponed(rules);
4974 learned_cookies_flush(ofproto, &dead_cookies);
4978 /* Deletes the rules listed in 'rules'.
4979 * The deleted rules will become invisible to the lookups in the next version.
4980 * Destroys 'rules'. */
4982 delete_flows__(struct rule_collection *rules,
4983 enum ofp_flow_removed_reason reason,
4984 const struct flow_mod_requester *req)
4985 OVS_REQUIRES(ofproto_mutex)
4988 struct ofproto *ofproto = rules->rules[0]->ofproto;
4990 delete_flows_start__(ofproto, rules);
4991 ofproto_bump_tables_version(ofproto);
4992 delete_flows_finish__(ofproto, rules, reason, req);
4993 ofmonitor_flush(ofproto->connmgr);
4997 /* Implements OFPFC_DELETE. */
4999 delete_flows_start_loose(struct ofproto *ofproto,
5000 const struct ofputil_flow_mod *fm,
5001 struct rule_collection *rules)
5002 OVS_REQUIRES(ofproto_mutex)
5004 struct rule_criteria criteria;
5007 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION,
5008 fm->cookie, fm->cookie_mask, fm->out_port,
5010 rule_criteria_require_rw(&criteria,
5011 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
5012 error = collect_rules_loose(ofproto, &criteria, rules);
5013 rule_criteria_destroy(&criteria);
5016 delete_flows_start__(ofproto, rules);
5023 delete_flows_revert(struct ofproto *ofproto,
5024 struct rule_collection *rules)
5025 OVS_REQUIRES(ofproto_mutex)
5027 for (size_t i = 0; i < rules->n; i++) {
5028 struct rule *rule = rules->rules[i];
5029 struct oftable *table = &ofproto->tables[rule->table_id];
5031 /* Restore table's rule count. */
5034 /* Restore the original visibility of the rule. */
5035 cls_rule_restore_visibility(&rule->cr);
5037 rule_collection_destroy(rules);
5041 delete_flows_finish(struct ofproto *ofproto,
5042 const struct ofputil_flow_mod *fm,
5043 const struct flow_mod_requester *req,
5044 struct rule_collection *rules)
5045 OVS_REQUIRES(ofproto_mutex)
5047 delete_flows_finish__(ofproto, rules, fm->delete_reason, req);
5050 /* Implements OFPFC_DELETE_STRICT. */
5052 delete_flow_start_strict(struct ofproto *ofproto,
5053 const struct ofputil_flow_mod *fm,
5054 struct rule_collection *rules)
5055 OVS_REQUIRES(ofproto_mutex)
5057 struct rule_criteria criteria;
5060 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
5061 CLS_MAX_VERSION, fm->cookie, fm->cookie_mask,
5062 fm->out_port, fm->out_group);
5063 rule_criteria_require_rw(&criteria,
5064 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
5065 error = collect_rules_strict(ofproto, &criteria, rules);
5066 rule_criteria_destroy(&criteria);
5069 delete_flows_start__(ofproto, rules);
5075 /* XXX: This should be sent right when the rule refcount gets to zero! */
5077 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
5078 OVS_REQUIRES(ofproto_mutex)
5080 struct ofputil_flow_removed fr;
5083 if (rule_is_hidden(rule) ||
5084 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
5088 minimatch_expand(&rule->cr.match, &fr.match);
5089 fr.priority = rule->cr.priority;
5090 fr.cookie = rule->flow_cookie;
5092 fr.table_id = rule->table_id;
5093 calc_duration(rule->created, time_msec(),
5094 &fr.duration_sec, &fr.duration_nsec);
5095 ovs_mutex_lock(&rule->mutex);
5096 fr.idle_timeout = rule->idle_timeout;
5097 fr.hard_timeout = rule->hard_timeout;
5098 ovs_mutex_unlock(&rule->mutex);
5099 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
5100 &fr.byte_count, &used);
5102 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
5105 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
5106 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
5109 * ofproto implementation ->run() functions should use this function to expire
5110 * OpenFlow flows. */
5112 ofproto_rule_expire(struct rule *rule, uint8_t reason)
5113 OVS_REQUIRES(ofproto_mutex)
5115 struct rule_collection rules;
5117 rules.rules = rules.stub;
5119 rules.stub[0] = rule;
5120 delete_flows__(&rules, reason, NULL);
5123 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
5124 * means "infinite". */
5126 reduce_timeout(uint16_t max, uint16_t *timeout)
5128 if (max && (!*timeout || *timeout > max)) {
5133 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
5134 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
5135 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
5137 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
5139 ofproto_rule_reduce_timeouts(struct rule *rule,
5140 uint16_t idle_timeout, uint16_t hard_timeout)
5141 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
5143 if (!idle_timeout && !hard_timeout) {
5147 ovs_mutex_lock(&ofproto_mutex);
5148 if (list_is_empty(&rule->expirable)) {
5149 list_insert(&rule->ofproto->expirable, &rule->expirable);
5151 ovs_mutex_unlock(&ofproto_mutex);
5153 ovs_mutex_lock(&rule->mutex);
5154 reduce_timeout(idle_timeout, &rule->idle_timeout);
5155 reduce_timeout(hard_timeout, &rule->hard_timeout);
5156 ovs_mutex_unlock(&rule->mutex);
5160 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5161 OVS_EXCLUDED(ofproto_mutex)
5163 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5164 struct ofputil_flow_mod fm;
5165 uint64_t ofpacts_stub[1024 / 8];
5166 struct ofpbuf ofpacts;
5169 error = reject_slave_controller(ofconn);
5174 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
5175 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
5177 u16_to_ofp(ofproto->max_ports),
5180 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
5183 struct flow_mod_requester req;
5185 req.ofconn = ofconn;
5187 error = handle_flow_mod__(ofproto, &fm, &req);
5190 goto exit_free_ofpacts;
5193 ofconn_report_flow_mod(ofconn, fm.command);
5196 ofpbuf_uninit(&ofpacts);
5202 handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
5203 const struct flow_mod_requester *req)
5204 OVS_EXCLUDED(ofproto_mutex)
5206 struct ofp_bundle_entry be;
5209 ovs_mutex_lock(&ofproto_mutex);
5210 error = do_bundle_flow_mod_start(ofproto, fm, &be);
5212 ofproto_bump_tables_version(ofproto);
5213 do_bundle_flow_mod_finish(ofproto, fm, req, &be);
5215 ofmonitor_flush(ofproto->connmgr);
5216 ovs_mutex_unlock(&ofproto_mutex);
5218 run_rule_executes(ofproto);
5223 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
5225 struct ofputil_role_request request;
5226 struct ofputil_role_request reply;
5230 error = ofputil_decode_role_message(oh, &request);
5235 if (request.role != OFPCR12_ROLE_NOCHANGE) {
5236 if (request.have_generation_id
5237 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
5238 return OFPERR_OFPRRFC_STALE;
5241 ofconn_set_role(ofconn, request.role);
5244 reply.role = ofconn_get_role(ofconn);
5245 reply.have_generation_id = ofconn_get_master_election_id(
5246 ofconn, &reply.generation_id);
5247 buf = ofputil_encode_role_reply(oh, &reply);
5248 ofconn_send_reply(ofconn, buf);
5254 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
5255 const struct ofp_header *oh)
5257 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
5258 enum ofputil_protocol cur, next;
5260 cur = ofconn_get_protocol(ofconn);
5261 next = ofputil_protocol_set_tid(cur, msg->set != 0);
5262 ofconn_set_protocol(ofconn, next);
5268 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
5270 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
5271 enum ofputil_protocol cur, next;
5272 enum ofputil_protocol next_base;
5274 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
5276 return OFPERR_OFPBRC_EPERM;
5279 cur = ofconn_get_protocol(ofconn);
5280 next = ofputil_protocol_set_base(cur, next_base);
5281 ofconn_set_protocol(ofconn, next);
5287 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
5288 const struct ofp_header *oh)
5290 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
5293 format = ntohl(msg->format);
5294 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
5295 return OFPERR_OFPBRC_EPERM;
5298 ofconn_set_packet_in_format(ofconn, format);
5303 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
5305 const struct nx_async_config *msg = ofpmsg_body(oh);
5306 uint32_t master[OAM_N_TYPES];
5307 uint32_t slave[OAM_N_TYPES];
5309 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
5310 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
5311 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
5313 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
5314 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
5315 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
5317 ofconn_set_async_config(ofconn, master, slave);
5318 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
5319 !ofconn_get_miss_send_len(ofconn)) {
5320 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
5327 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
5330 uint32_t master[OAM_N_TYPES];
5331 uint32_t slave[OAM_N_TYPES];
5332 struct nx_async_config *msg;
5334 ofconn_get_async_config(ofconn, master, slave);
5335 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
5336 msg = ofpbuf_put_zeros(buf, sizeof *msg);
5338 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
5339 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
5340 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
5342 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
5343 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
5344 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
5346 ofconn_send_reply(ofconn, buf);
5352 handle_nxt_set_controller_id(struct ofconn *ofconn,
5353 const struct ofp_header *oh)
5355 const struct nx_controller_id *nci = ofpmsg_body(oh);
5357 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
5358 return OFPERR_NXBRC_MUST_BE_ZERO;
5361 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
5366 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
5370 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
5371 ? OFPRAW_OFPT10_BARRIER_REPLY
5372 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
5373 ofconn_send_reply(ofconn, buf);
5378 ofproto_compose_flow_refresh_update(const struct rule *rule,
5379 enum nx_flow_monitor_flags flags,
5380 struct ovs_list *msgs)
5381 OVS_REQUIRES(ofproto_mutex)
5383 const struct rule_actions *actions;
5384 struct ofputil_flow_update fu;
5387 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
5388 ? NXFME_ADDED : NXFME_MODIFIED);
5390 ovs_mutex_lock(&rule->mutex);
5391 fu.idle_timeout = rule->idle_timeout;
5392 fu.hard_timeout = rule->hard_timeout;
5393 ovs_mutex_unlock(&rule->mutex);
5394 fu.table_id = rule->table_id;
5395 fu.cookie = rule->flow_cookie;
5396 minimatch_expand(&rule->cr.match, &match);
5398 fu.priority = rule->cr.priority;
5400 actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL;
5401 fu.ofpacts = actions ? actions->ofpacts : NULL;
5402 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
5404 if (list_is_empty(msgs)) {
5405 ofputil_start_flow_update(msgs);
5407 ofputil_append_flow_update(&fu, msgs);
5411 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
5412 struct ovs_list *msgs)
5413 OVS_REQUIRES(ofproto_mutex)
5417 for (i = 0; i < rules->n; i++) {
5418 struct rule *rule = rules->rules[i];
5419 enum nx_flow_monitor_flags flags = rule->monitor_flags;
5420 rule->monitor_flags = 0;
5422 ofproto_compose_flow_refresh_update(rule, flags, msgs);
5427 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
5428 struct rule *rule, uint64_t seqno,
5429 struct rule_collection *rules)
5430 OVS_REQUIRES(ofproto_mutex)
5432 enum nx_flow_monitor_flags update;
5434 if (rule_is_hidden(rule)) {
5438 if (!ofproto_rule_has_out_port(rule, m->out_port)) {
5443 if (rule->add_seqno > seqno) {
5444 update = NXFMF_ADD | NXFMF_MODIFY;
5445 } else if (rule->modify_seqno > seqno) {
5446 update = NXFMF_MODIFY;
5451 if (!(m->flags & update)) {
5455 update = NXFMF_INITIAL;
5458 if (!rule->monitor_flags) {
5459 rule_collection_add(rules, rule);
5461 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
5465 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
5467 struct rule_collection *rules)
5468 OVS_REQUIRES(ofproto_mutex)
5470 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
5471 const struct oftable *table;
5472 struct cls_rule target;
5474 cls_rule_init_from_minimatch(&target, &m->match, 0, CLS_MAX_VERSION);
5475 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
5478 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) {
5479 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
5482 cls_rule_destroy(&target);
5486 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
5487 struct rule_collection *rules)
5488 OVS_REQUIRES(ofproto_mutex)
5490 if (m->flags & NXFMF_INITIAL) {
5491 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
5496 ofmonitor_collect_resume_rules(struct ofmonitor *m,
5497 uint64_t seqno, struct rule_collection *rules)
5498 OVS_REQUIRES(ofproto_mutex)
5500 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
5504 flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
5505 OVS_REQUIRES(ofproto_mutex)
5507 struct ofmonitor *m;
5510 m = ofmonitor_lookup(ofconn, id);
5512 ofmonitor_destroy(m);
5515 error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
5522 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
5523 OVS_EXCLUDED(ofproto_mutex)
5525 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5526 struct ofmonitor **monitors;
5527 size_t n_monitors, allocated_monitors;
5528 struct rule_collection rules;
5529 struct ovs_list replies;
5534 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5536 n_monitors = allocated_monitors = 0;
5538 ovs_mutex_lock(&ofproto_mutex);
5540 struct ofputil_flow_monitor_request request;
5541 struct ofmonitor *m;
5544 retval = ofputil_decode_flow_monitor_request(&request, &b);
5545 if (retval == EOF) {
5547 } else if (retval) {
5552 if (request.table_id != 0xff
5553 && request.table_id >= ofproto->n_tables) {
5554 error = OFPERR_OFPBRC_BAD_TABLE_ID;
5558 error = ofmonitor_create(&request, ofconn, &m);
5563 if (n_monitors >= allocated_monitors) {
5564 monitors = x2nrealloc(monitors, &allocated_monitors,
5567 monitors[n_monitors++] = m;
5570 rule_collection_init(&rules);
5571 for (i = 0; i < n_monitors; i++) {
5572 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
5575 ofpmp_init(&replies, oh);
5576 ofmonitor_compose_refresh_updates(&rules, &replies);
5577 ovs_mutex_unlock(&ofproto_mutex);
5579 rule_collection_destroy(&rules);
5581 ofconn_send_replies(ofconn, &replies);
5587 for (i = 0; i < n_monitors; i++) {
5588 ofmonitor_destroy(monitors[i]);
5591 ovs_mutex_unlock(&ofproto_mutex);
5597 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
5598 OVS_EXCLUDED(ofproto_mutex)
5603 id = ofputil_decode_flow_monitor_cancel(oh);
5605 ovs_mutex_lock(&ofproto_mutex);
5606 error = flow_monitor_delete(ofconn, id);
5607 ovs_mutex_unlock(&ofproto_mutex);
5612 /* Meters implementation.
5614 * Meter table entry, indexed by the OpenFlow meter_id.
5615 * 'created' is used to compute the duration for meter stats.
5616 * 'list rules' is needed so that we can delete the dependent rules when the
5617 * meter table entry is deleted.
5618 * 'provider_meter_id' is for the provider's private use.
5621 long long int created; /* Time created. */
5622 struct ovs_list rules; /* List of "struct rule_dpif"s. */
5623 ofproto_meter_id provider_meter_id;
5624 uint16_t flags; /* Meter flags. */
5625 uint16_t n_bands; /* Number of meter bands. */
5626 struct ofputil_meter_band *bands;
5630 * This is used in instruction validation at flow set-up time,
5631 * as flows may not use non-existing meters.
5632 * Return value of UINT32_MAX signifies an invalid meter.
5635 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
5637 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5638 const struct meter *meter = ofproto->meters[of_meter_id];
5640 return meter->provider_meter_id.uint32;
5646 /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's
5649 meter_insert_rule(struct rule *rule)
5651 const struct rule_actions *a = rule_get_actions(rule);
5652 uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len);
5653 struct meter *meter = rule->ofproto->meters[meter_id];
5655 list_insert(&meter->rules, &rule->meter_list_node);
5659 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5663 meter->flags = config->flags;
5664 meter->n_bands = config->n_bands;
5665 meter->bands = xmemdup(config->bands,
5666 config->n_bands * sizeof *meter->bands);
5669 static struct meter *
5670 meter_create(const struct ofputil_meter_config *config,
5671 ofproto_meter_id provider_meter_id)
5673 struct meter *meter;
5675 meter = xzalloc(sizeof *meter);
5676 meter->provider_meter_id = provider_meter_id;
5677 meter->created = time_msec();
5678 list_init(&meter->rules);
5680 meter_update(meter, config);
5686 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5687 OVS_REQUIRES(ofproto_mutex)
5690 for (mid = first; mid <= last; ++mid) {
5691 struct meter *meter = ofproto->meters[mid];
5693 ofproto->meters[mid] = NULL;
5694 ofproto->ofproto_class->meter_del(ofproto,
5695 meter->provider_meter_id);
5703 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5705 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5706 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5710 return OFPERR_OFPMMFC_METER_EXISTS;
5713 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5716 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5717 *meterp = meter_create(&mm->meter, provider_meter_id);
5723 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5725 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5727 uint32_t provider_meter_id;
5730 return OFPERR_OFPMMFC_UNKNOWN_METER;
5733 provider_meter_id = meter->provider_meter_id.uint32;
5734 error = ofproto->ofproto_class->meter_set(ofproto,
5735 &meter->provider_meter_id,
5737 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5739 meter_update(meter, &mm->meter);
5745 handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm)
5746 OVS_EXCLUDED(ofproto_mutex)
5748 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5749 uint32_t meter_id = mm->meter.meter_id;
5750 struct rule_collection rules;
5751 enum ofperr error = 0;
5752 uint32_t first, last;
5754 if (meter_id == OFPM13_ALL) {
5756 last = ofproto->meter_features.max_meters;
5758 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5761 first = last = meter_id;
5764 /* First delete the rules that use this meter. If any of those rules are
5765 * currently being modified, postpone the whole operation until later. */
5766 rule_collection_init(&rules);
5767 ovs_mutex_lock(&ofproto_mutex);
5768 for (meter_id = first; meter_id <= last; ++meter_id) {
5769 struct meter *meter = ofproto->meters[meter_id];
5770 if (meter && !list_is_empty(&meter->rules)) {
5773 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5774 rule_collection_add(&rules, rule);
5778 delete_flows__(&rules, OFPRR_METER_DELETE, NULL);
5780 /* Delete the meters. */
5781 meter_delete(ofproto, first, last);
5783 ovs_mutex_unlock(&ofproto_mutex);
5789 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5791 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5792 struct ofputil_meter_mod mm;
5793 uint64_t bands_stub[256 / 8];
5794 struct ofpbuf bands;
5798 error = reject_slave_controller(ofconn);
5803 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5805 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5807 goto exit_free_bands;
5810 meter_id = mm.meter.meter_id;
5812 if (mm.command != OFPMC13_DELETE) {
5813 /* Fails also when meters are not implemented by the provider. */
5814 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5815 error = OFPERR_OFPMMFC_INVALID_METER;
5816 goto exit_free_bands;
5817 } else if (meter_id > ofproto->meter_features.max_meters) {
5818 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5819 goto exit_free_bands;
5821 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5822 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5823 goto exit_free_bands;
5827 switch (mm.command) {
5829 error = handle_add_meter(ofproto, &mm);
5832 case OFPMC13_MODIFY:
5833 error = handle_modify_meter(ofproto, &mm);
5836 case OFPMC13_DELETE:
5837 error = handle_delete_meter(ofconn, &mm);
5841 error = OFPERR_OFPMMFC_BAD_COMMAND;
5846 ofpbuf_uninit(&bands);
5851 handle_meter_features_request(struct ofconn *ofconn,
5852 const struct ofp_header *request)
5854 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5855 struct ofputil_meter_features features;
5858 if (ofproto->ofproto_class->meter_get_features) {
5859 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5861 memset(&features, 0, sizeof features);
5863 b = ofputil_encode_meter_features_reply(&features, request);
5865 ofconn_send_reply(ofconn, b);
5870 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5873 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5874 struct ovs_list replies;
5875 uint64_t bands_stub[256 / 8];
5876 struct ofpbuf bands;
5877 uint32_t meter_id, first, last;
5879 ofputil_decode_meter_request(request, &meter_id);
5881 if (meter_id == OFPM13_ALL) {
5883 last = ofproto->meter_features.max_meters;
5885 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5886 !ofproto->meters[meter_id]) {
5887 return OFPERR_OFPMMFC_UNKNOWN_METER;
5889 first = last = meter_id;
5892 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5893 ofpmp_init(&replies, request);
5895 for (meter_id = first; meter_id <= last; ++meter_id) {
5896 struct meter *meter = ofproto->meters[meter_id];
5898 continue; /* Skip non-existing meters. */
5900 if (type == OFPTYPE_METER_STATS_REQUEST) {
5901 struct ofputil_meter_stats stats;
5903 stats.meter_id = meter_id;
5905 /* Provider sets the packet and byte counts, we do the rest. */
5906 stats.flow_count = list_size(&meter->rules);
5907 calc_duration(meter->created, time_msec(),
5908 &stats.duration_sec, &stats.duration_nsec);
5909 stats.n_bands = meter->n_bands;
5910 ofpbuf_clear(&bands);
5912 = ofpbuf_put_uninit(&bands,
5913 meter->n_bands * sizeof *stats.bands);
5915 if (!ofproto->ofproto_class->meter_get(ofproto,
5916 meter->provider_meter_id,
5918 ofputil_append_meter_stats(&replies, &stats);
5920 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5921 struct ofputil_meter_config config;
5923 config.meter_id = meter_id;
5924 config.flags = meter->flags;
5925 config.n_bands = meter->n_bands;
5926 config.bands = meter->bands;
5927 ofputil_append_meter_config(&replies, &config);
5931 ofconn_send_replies(ofconn, &replies);
5932 ofpbuf_uninit(&bands);
5937 ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id,
5938 struct ofgroup **group)
5939 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5941 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5942 hash_int(group_id, 0), &ofproto->groups) {
5943 if ((*group)->group_id == group_id) {
5951 /* If the group exists, this function increments the groups's reference count.
5953 * Make sure to call ofproto_group_unref() after no longer needing to maintain
5954 * a reference to the group. */
5956 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5957 struct ofgroup **group)
5961 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5962 found = ofproto_group_lookup__(ofproto, group_id, group);
5964 ofproto_group_ref(*group);
5966 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5971 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
5972 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5974 struct ofgroup *grp;
5976 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5977 hash_int(group_id, 0), &ofproto->groups) {
5978 if (grp->group_id == group_id) {
5986 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5987 OVS_EXCLUDED(ofproto->groups_rwlock)
5991 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5992 exists = ofproto_group_exists__(ofproto, group_id);
5993 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5999 group_get_ref_count(struct ofgroup *group)
6000 OVS_EXCLUDED(ofproto_mutex)
6002 struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto);
6003 struct rule_criteria criteria;
6004 struct rule_collection rules;
6009 match_init_catchall(&match);
6010 rule_criteria_init(&criteria, 0xff, &match, 0, CLS_MAX_VERSION, htonll(0),
6011 htonll(0), OFPP_ANY, group->group_id);
6012 ovs_mutex_lock(&ofproto_mutex);
6013 error = collect_rules_loose(ofproto, &criteria, &rules);
6014 ovs_mutex_unlock(&ofproto_mutex);
6015 rule_criteria_destroy(&criteria);
6017 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
6019 rule_collection_destroy(&rules);
6024 append_group_stats(struct ofgroup *group, struct ovs_list *replies)
6026 struct ofputil_group_stats ogs;
6027 const struct ofproto *ofproto = group->ofproto;
6028 long long int now = time_msec();
6031 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
6033 /* Provider sets the packet and byte counts, we do the rest. */
6034 ogs.ref_count = group_get_ref_count(group);
6035 ogs.n_buckets = group->n_buckets;
6037 error = (ofproto->ofproto_class->group_get_stats
6038 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
6041 ogs.packet_count = UINT64_MAX;
6042 ogs.byte_count = UINT64_MAX;
6043 memset(ogs.bucket_stats, 0xff,
6044 ogs.n_buckets * sizeof *ogs.bucket_stats);
6047 ogs.group_id = group->group_id;
6048 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
6050 ofputil_append_group_stats(replies, &ogs);
6052 free(ogs.bucket_stats);
6056 handle_group_request(struct ofconn *ofconn,
6057 const struct ofp_header *request, uint32_t group_id,
6058 void (*cb)(struct ofgroup *, struct ovs_list *replies))
6060 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6061 struct ofgroup *group;
6062 struct ovs_list replies;
6064 ofpmp_init(&replies, request);
6065 if (group_id == OFPG_ALL) {
6066 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
6067 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
6068 cb(group, &replies);
6070 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6072 if (ofproto_group_lookup(ofproto, group_id, &group)) {
6073 cb(group, &replies);
6074 ofproto_group_unref(group);
6077 ofconn_send_replies(ofconn, &replies);
6081 handle_group_stats_request(struct ofconn *ofconn,
6082 const struct ofp_header *request)
6087 error = ofputil_decode_group_stats_request(request, &group_id);
6092 handle_group_request(ofconn, request, group_id, append_group_stats);
6097 append_group_desc(struct ofgroup *group, struct ovs_list *replies)
6099 struct ofputil_group_desc gds;
6101 gds.group_id = group->group_id;
6102 gds.type = group->type;
6103 gds.props = group->props;
6105 ofputil_append_group_desc_reply(&gds, &group->buckets, replies);
6109 handle_group_desc_stats_request(struct ofconn *ofconn,
6110 const struct ofp_header *request)
6112 handle_group_request(ofconn, request,
6113 ofputil_decode_group_desc_request(request),
6119 handle_group_features_stats_request(struct ofconn *ofconn,
6120 const struct ofp_header *request)
6122 struct ofproto *p = ofconn_get_ofproto(ofconn);
6125 msg = ofputil_encode_group_features_reply(&p->ogf, request);
6127 ofconn_send_reply(ofconn, msg);
6134 handle_queue_get_config_request(struct ofconn *ofconn,
6135 const struct ofp_header *oh)
6137 struct ofproto *p = ofconn_get_ofproto(ofconn);
6138 struct netdev_queue_dump queue_dump;
6139 struct ofport *ofport;
6140 unsigned int queue_id;
6141 struct ofpbuf *reply;
6142 struct smap details;
6146 error = ofputil_decode_queue_get_config_request(oh, &request);
6151 ofport = ofproto_get_port(p, request);
6153 return OFPERR_OFPQOFC_BAD_PORT;
6156 reply = ofputil_encode_queue_get_config_reply(oh);
6158 smap_init(&details);
6159 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
6160 struct ofputil_queue_config queue;
6162 /* None of the existing queues have compatible properties, so we
6163 * hard-code omitting min_rate and max_rate. */
6164 queue.queue_id = queue_id;
6165 queue.min_rate = UINT16_MAX;
6166 queue.max_rate = UINT16_MAX;
6167 ofputil_append_queue_get_config_reply(reply, &queue);
6169 smap_destroy(&details);
6171 ofconn_send_reply(ofconn, reply);
6177 init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm,
6178 struct ofgroup **ofgroup)
6181 const long long int now = time_msec();
6183 if (gm->group_id > OFPG_MAX) {
6184 return OFPERR_OFPGMFC_INVALID_GROUP;
6186 if (gm->type > OFPGT11_FF) {
6187 return OFPERR_OFPGMFC_BAD_TYPE;
6190 *ofgroup = ofproto->ofproto_class->group_alloc();
6192 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
6193 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
6196 (*ofgroup)->ofproto = ofproto;
6197 *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id;
6198 *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type;
6199 *CONST_CAST(long long int *, &((*ofgroup)->created)) = now;
6200 *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now;
6201 ovs_refcount_init(&(*ofgroup)->ref_count);
6203 list_move(&(*ofgroup)->buckets, &gm->buckets);
6204 *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) =
6205 list_size(&(*ofgroup)->buckets);
6207 memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props),
6208 &gm->props, sizeof (struct ofputil_group_props));
6210 /* Construct called BEFORE any locks are held. */
6211 error = ofproto->ofproto_class->group_construct(*ofgroup);
6213 ofputil_bucket_list_destroy(&(*ofgroup)->buckets);
6214 ofproto->ofproto_class->group_dealloc(*ofgroup);
6219 /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to
6220 * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on
6223 add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
6225 struct ofgroup *ofgroup;
6228 /* Allocate new group and initialize it. */
6229 error = init_group(ofproto, gm, &ofgroup);
6234 /* We wrlock as late as possible to minimize the time we jam any other
6235 * threads: No visible state changes before acquiring the lock. */
6236 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6238 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6239 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6243 if (ofproto_group_exists__(ofproto, gm->group_id)) {
6244 error = OFPERR_OFPGMFC_GROUP_EXISTS;
6249 /* Insert new group. */
6250 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
6251 hash_int(ofgroup->group_id, 0));
6252 ofproto->n_groups[ofgroup->type]++;
6254 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6259 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6260 ofproto->ofproto_class->group_destruct(ofgroup);
6261 ofputil_bucket_list_destroy(&ofgroup->buckets);
6262 ofproto->ofproto_class->group_dealloc(ofgroup);
6267 /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets
6268 * already in 'new_ofgroup' will be placed just after the (copy of the) bucket
6269 * in 'ofgroup' with bucket ID 'command_bucket_id'. Special
6270 * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are
6273 copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup,
6274 struct ofgroup *new_ofgroup,
6275 uint32_t command_bucket_id)
6277 struct ofputil_bucket *last = NULL;
6279 if (command_bucket_id <= OFPG15_BUCKET_MAX) {
6280 /* Check here to ensure that a bucket corresponding to
6281 * command_bucket_id exists in the old bucket list.
6283 * The subsequent search of below of new_ofgroup covers
6284 * both buckets in the old bucket list and buckets added
6285 * by the insert buckets group mod message this function processes. */
6286 if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) {
6287 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6290 if (!list_is_empty(&new_ofgroup->buckets)) {
6291 last = ofputil_bucket_list_back(&new_ofgroup->buckets);
6295 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL);
6297 if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) {
6298 VLOG_WARN_RL(&rl, "Duplicate bucket id");
6299 return OFPERR_OFPGMFC_BUCKET_EXISTS;
6302 /* Rearrange list according to command_bucket_id */
6303 if (command_bucket_id == OFPG15_BUCKET_LAST) {
6304 struct ofputil_bucket *new_first;
6305 const struct ofputil_bucket *first;
6307 first = ofputil_bucket_list_front(&ofgroup->buckets);
6308 new_first = ofputil_bucket_find(&new_ofgroup->buckets,
6311 list_splice(new_ofgroup->buckets.next, &new_first->list_node,
6312 &new_ofgroup->buckets);
6313 } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) {
6314 struct ofputil_bucket *after;
6316 /* Presence of bucket is checked above so after should never be NULL */
6317 after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id);
6319 list_splice(after->list_node.next, new_ofgroup->buckets.next,
6320 last->list_node.next);
6326 /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup'
6327 * with the exception of the bucket whose bucket id is 'command_bucket_id'.
6328 * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST
6329 * and OFPG15_BUCKET_ALL are also honored. */
6331 copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup,
6332 struct ofgroup *new_ofgroup,
6333 uint32_t command_bucket_id)
6335 const struct ofputil_bucket *skip = NULL;
6337 if (command_bucket_id == OFPG15_BUCKET_ALL) {
6341 if (command_bucket_id == OFPG15_BUCKET_FIRST) {
6342 if (!list_is_empty(&ofgroup->buckets)) {
6343 skip = ofputil_bucket_list_front(&ofgroup->buckets);
6345 } else if (command_bucket_id == OFPG15_BUCKET_LAST) {
6346 if (!list_is_empty(&ofgroup->buckets)) {
6347 skip = ofputil_bucket_list_back(&ofgroup->buckets);
6350 skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id);
6352 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6356 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip);
6361 /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and
6362 * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code
6365 * Note that the group is re-created and then replaces the old group in
6366 * ofproto's ofgroup hash map. Thus, the group is never altered while users of
6367 * the xlate module hold a pointer to the group. */
6369 modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
6371 struct ofgroup *ofgroup, *new_ofgroup, *retiring;
6374 error = init_group(ofproto, gm, &new_ofgroup);
6379 retiring = new_ofgroup;
6381 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6382 if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) {
6383 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
6387 /* Ofproto's group write lock is held now. */
6388 if (ofgroup->type != gm->type
6389 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6390 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6394 /* Manipulate bucket list for bucket commands */
6395 if (gm->command == OFPGC15_INSERT_BUCKET) {
6396 error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup,
6397 gm->command_bucket_id);
6398 } else if (gm->command == OFPGC15_REMOVE_BUCKET) {
6399 error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup,
6400 gm->command_bucket_id);
6406 /* The group creation time does not change during modification. */
6407 *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created;
6408 *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec();
6410 error = ofproto->ofproto_class->group_modify(new_ofgroup);
6416 /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */
6417 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6418 hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node,
6419 hash_int(new_ofgroup->group_id, 0));
6420 if (ofgroup->type != new_ofgroup->type) {
6421 ofproto->n_groups[ofgroup->type]--;
6422 ofproto->n_groups[new_ofgroup->type]++;
6426 ofproto_group_unref(retiring);
6427 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6432 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
6433 OVS_RELEASES(ofproto->groups_rwlock)
6436 struct ofputil_flow_mod fm;
6438 /* Delete all flow entries containing this group in a group action */
6439 match_init_catchall(&match);
6440 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
6441 fm.delete_reason = OFPRR_GROUP_DELETE;
6442 fm.out_group = ofgroup->group_id;
6443 handle_flow_mod__(ofproto, &fm, NULL);
6445 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6446 /* No-one can find this group any more. */
6447 ofproto->n_groups[ofgroup->type]--;
6448 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6449 ofproto_group_unref(ofgroup);
6452 /* Implements OFPGC11_DELETE. */
6454 delete_group(struct ofproto *ofproto, uint32_t group_id)
6456 struct ofgroup *ofgroup;
6458 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6459 if (group_id == OFPG_ALL) {
6461 struct hmap_node *node = hmap_first(&ofproto->groups);
6465 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
6466 delete_group__(ofproto, ofgroup);
6467 /* Lock for each node separately, so that we will not jam the
6468 * other threads for too long time. */
6469 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6472 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
6473 hash_int(group_id, 0), &ofproto->groups) {
6474 if (ofgroup->group_id == group_id) {
6475 delete_group__(ofproto, ofgroup);
6480 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6484 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6486 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6487 struct ofputil_group_mod gm;
6490 error = reject_slave_controller(ofconn);
6495 error = ofputil_decode_group_mod(oh, &gm);
6500 switch (gm.command) {
6502 return add_group(ofproto, &gm);
6504 case OFPGC11_MODIFY:
6505 return modify_group(ofproto, &gm);
6507 case OFPGC11_DELETE:
6508 delete_group(ofproto, gm.group_id);
6511 case OFPGC15_INSERT_BUCKET:
6512 return modify_group(ofproto, &gm);
6514 case OFPGC15_REMOVE_BUCKET:
6515 return modify_group(ofproto, &gm);
6518 if (gm.command > OFPGC11_DELETE) {
6519 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
6520 ofproto->name, gm.command);
6522 return OFPERR_OFPGMFC_BAD_COMMAND;
6526 enum ofputil_table_miss
6527 ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
6529 enum ofputil_table_miss value;
6531 atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value);
6536 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
6538 if (!check_table_id(ofproto, tm->table_id)) {
6539 return OFPERR_OFPTMFC_BAD_TABLE;
6540 } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) {
6541 if (tm->table_id == OFPTT_ALL) {
6543 for (i = 0; i < ofproto->n_tables; i++) {
6544 atomic_store_relaxed(&ofproto->tables[i].miss_config,
6548 atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config,
6556 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6558 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6559 struct ofputil_table_mod tm;
6562 error = reject_slave_controller(ofconn);
6567 error = ofputil_decode_table_mod(oh, &tm);
6572 return table_mod(ofproto, &tm);
6576 do_bundle_flow_mod_start(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6577 struct ofp_bundle_entry *be)
6578 OVS_REQUIRES(ofproto_mutex)
6580 switch (fm->command) {
6582 return add_flow_start(ofproto, fm, &be->old_rules.stub[0],
6583 &be->new_rules.stub[0]);
6585 return modify_flows_start_loose(ofproto, fm, &be->old_rules,
6587 case OFPFC_MODIFY_STRICT:
6588 return modify_flow_start_strict(ofproto, fm, &be->old_rules,
6591 return delete_flows_start_loose(ofproto, fm, &be->old_rules);
6593 case OFPFC_DELETE_STRICT:
6594 return delete_flow_start_strict(ofproto, fm, &be->old_rules);
6597 return OFPERR_OFPFMFC_BAD_COMMAND;
6601 do_bundle_flow_mod_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6602 struct ofp_bundle_entry *be)
6603 OVS_REQUIRES(ofproto_mutex)
6605 switch (fm->command) {
6607 add_flow_revert(ofproto, fm, be->old_rules.stub[0],
6608 be->new_rules.stub[0]);
6612 case OFPFC_MODIFY_STRICT:
6613 modify_flows_revert(ofproto, fm, &be->old_rules, &be->new_rules);
6617 case OFPFC_DELETE_STRICT:
6618 delete_flows_revert(ofproto, &be->old_rules);
6627 do_bundle_flow_mod_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6628 const struct flow_mod_requester *req,
6629 struct ofp_bundle_entry *be)
6630 OVS_REQUIRES(ofproto_mutex)
6632 switch (fm->command) {
6634 add_flow_finish(ofproto, fm, req, be->old_rules.stub[0],
6635 be->new_rules.stub[0]);
6639 case OFPFC_MODIFY_STRICT:
6640 modify_flows_finish(ofproto, fm, req, &be->old_rules, &be->new_rules);
6644 case OFPFC_DELETE_STRICT:
6645 delete_flows_finish(ofproto, fm, req, &be->old_rules);
6653 /* Commit phases (all while locking ofproto_mutex):
6655 * 1. Begin: Gather resources and make changes visible in the next version.
6656 * - Mark affected rules for removal in the next version.
6657 * - Create new replacement rules, make visible in the next
6659 * - Do not send any events or notifications.
6661 * 2. Revert: Fail if any errors are found. After this point no errors are
6662 * possible. No visible changes were made, so rollback is minimal (remove
6663 * added invisible rules, restore visibility of rules marked for removal).
6665 * 3. Bump the version visible to lookups.
6667 * 4. Finish: Insert replacement rules to the ofproto provider. Remove replaced
6668 * and deleted rules from ofproto data structures, and Schedule postponed
6669 * removal of deleted rules from the classifier. Send notifications, buffered
6673 do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags)
6675 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6676 struct ofp_bundle *bundle;
6677 struct ofp_bundle_entry *be;
6680 bundle = ofconn_get_bundle(ofconn, id);
6683 return OFPERR_OFPBFC_BAD_ID;
6685 if (bundle->flags != flags) {
6686 error = OFPERR_OFPBFC_BAD_FLAGS;
6689 ovs_mutex_lock(&ofproto_mutex);
6692 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6693 if (be->type == OFPTYPE_PORT_MOD) {
6694 /* Not supported yet. */
6695 error = OFPERR_OFPBFC_MSG_FAILED;
6696 } else if (be->type == OFPTYPE_FLOW_MOD) {
6697 error = do_bundle_flow_mod_start(ofproto, &be->fm, be);
6706 /* Send error referring to the original message. */
6708 ofconn_send_error(ofconn, be->ofp_msg, error);
6709 error = OFPERR_OFPBFC_MSG_FAILED;
6712 /* 2. Revert. Undo all the changes made above. */
6713 LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) {
6714 if (be->type == OFPTYPE_FLOW_MOD) {
6715 do_bundle_flow_mod_revert(ofproto, &be->fm, be);
6719 /* 3. Bump the version. This makes all the changes in the bundle
6720 * visible to the lookups at once. For this to work an upcall must
6721 * read the tables_version once at the beginning and keep using the
6722 * same version number for the whole duration of the upcall
6724 ofproto_bump_tables_version(ofproto);
6727 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6728 if (be->type == OFPTYPE_FLOW_MOD) {
6729 struct flow_mod_requester req = { ofconn, be->ofp_msg };
6731 do_bundle_flow_mod_finish(ofproto, &be->fm, &req, be);
6735 ofmonitor_flush(ofproto->connmgr);
6736 ovs_mutex_unlock(&ofproto_mutex);
6738 run_rule_executes(ofproto);
6741 /* The bundle is discarded regardless the outcome. */
6742 ofp_bundle_remove__(ofconn, bundle, !error);
6747 handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh)
6749 struct ofputil_bundle_ctrl_msg bctrl;
6750 struct ofputil_bundle_ctrl_msg reply;
6754 error = reject_slave_controller(ofconn);
6759 error = ofputil_decode_bundle_ctrl(oh, &bctrl);
6764 reply.bundle_id = bctrl.bundle_id;
6766 switch (bctrl.type) {
6767 case OFPBCT_OPEN_REQUEST:
6768 error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags);
6769 reply.type = OFPBCT_OPEN_REPLY;
6771 case OFPBCT_CLOSE_REQUEST:
6772 error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags);
6773 reply.type = OFPBCT_CLOSE_REPLY;;
6775 case OFPBCT_COMMIT_REQUEST:
6776 error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags);
6777 reply.type = OFPBCT_COMMIT_REPLY;
6779 case OFPBCT_DISCARD_REQUEST:
6780 error = ofp_bundle_discard(ofconn, bctrl.bundle_id);
6781 reply.type = OFPBCT_DISCARD_REPLY;
6784 case OFPBCT_OPEN_REPLY:
6785 case OFPBCT_CLOSE_REPLY:
6786 case OFPBCT_COMMIT_REPLY:
6787 case OFPBCT_DISCARD_REPLY:
6788 return OFPERR_OFPBFC_BAD_TYPE;
6793 buf = ofputil_encode_bundle_ctrl_reply(oh, &reply);
6794 ofconn_send_reply(ofconn, buf);
6800 handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh)
6802 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6804 struct ofputil_bundle_add_msg badd;
6805 struct ofp_bundle_entry *bmsg;
6808 error = reject_slave_controller(ofconn);
6813 error = ofputil_decode_bundle_add(oh, &badd, &type);
6818 bmsg = ofp_bundle_entry_alloc(type, badd.msg);
6820 if (type == OFPTYPE_PORT_MOD) {
6821 error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false);
6822 } else if (type == OFPTYPE_FLOW_MOD) {
6823 struct ofpbuf ofpacts;
6824 uint64_t ofpacts_stub[1024 / 8];
6826 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
6827 error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg,
6828 ofconn_get_protocol(ofconn),
6830 u16_to_ofp(ofproto->max_ports),
6832 /* Move actions to heap. */
6833 bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts);
6835 if (!error && bmsg->fm.ofpacts_len) {
6836 error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts,
6837 bmsg->fm.ofpacts_len);
6844 error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags,
6849 ofp_bundle_entry_free(bmsg);
6856 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
6857 OVS_EXCLUDED(ofproto_mutex)
6859 const struct ofp_header *oh = msg->data;
6863 error = ofptype_decode(&type, oh);
6867 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
6868 && ofpmp_more(oh)) {
6869 /* We have no buffer implementation for multipart requests.
6870 * Report overflow for requests which consists of multiple
6872 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
6876 /* OpenFlow requests. */
6877 case OFPTYPE_ECHO_REQUEST:
6878 return handle_echo_request(ofconn, oh);
6880 case OFPTYPE_FEATURES_REQUEST:
6881 return handle_features_request(ofconn, oh);
6883 case OFPTYPE_GET_CONFIG_REQUEST:
6884 return handle_get_config_request(ofconn, oh);
6886 case OFPTYPE_SET_CONFIG:
6887 return handle_set_config(ofconn, oh);
6889 case OFPTYPE_PACKET_OUT:
6890 return handle_packet_out(ofconn, oh);
6892 case OFPTYPE_PORT_MOD:
6893 return handle_port_mod(ofconn, oh);
6895 case OFPTYPE_FLOW_MOD:
6896 return handle_flow_mod(ofconn, oh);
6898 case OFPTYPE_GROUP_MOD:
6899 return handle_group_mod(ofconn, oh);
6901 case OFPTYPE_TABLE_MOD:
6902 return handle_table_mod(ofconn, oh);
6904 case OFPTYPE_METER_MOD:
6905 return handle_meter_mod(ofconn, oh);
6907 case OFPTYPE_BARRIER_REQUEST:
6908 return handle_barrier_request(ofconn, oh);
6910 case OFPTYPE_ROLE_REQUEST:
6911 return handle_role_request(ofconn, oh);
6913 /* OpenFlow replies. */
6914 case OFPTYPE_ECHO_REPLY:
6917 /* Nicira extension requests. */
6918 case OFPTYPE_FLOW_MOD_TABLE_ID:
6919 return handle_nxt_flow_mod_table_id(ofconn, oh);
6921 case OFPTYPE_SET_FLOW_FORMAT:
6922 return handle_nxt_set_flow_format(ofconn, oh);
6924 case OFPTYPE_SET_PACKET_IN_FORMAT:
6925 return handle_nxt_set_packet_in_format(ofconn, oh);
6927 case OFPTYPE_SET_CONTROLLER_ID:
6928 return handle_nxt_set_controller_id(ofconn, oh);
6930 case OFPTYPE_FLOW_AGE:
6931 /* Nothing to do. */
6934 case OFPTYPE_FLOW_MONITOR_CANCEL:
6935 return handle_flow_monitor_cancel(ofconn, oh);
6937 case OFPTYPE_SET_ASYNC_CONFIG:
6938 return handle_nxt_set_async_config(ofconn, oh);
6940 case OFPTYPE_GET_ASYNC_REQUEST:
6941 return handle_nxt_get_async_request(ofconn, oh);
6943 /* Statistics requests. */
6944 case OFPTYPE_DESC_STATS_REQUEST:
6945 return handle_desc_stats_request(ofconn, oh);
6947 case OFPTYPE_FLOW_STATS_REQUEST:
6948 return handle_flow_stats_request(ofconn, oh);
6950 case OFPTYPE_AGGREGATE_STATS_REQUEST:
6951 return handle_aggregate_stats_request(ofconn, oh);
6953 case OFPTYPE_TABLE_STATS_REQUEST:
6954 return handle_table_stats_request(ofconn, oh);
6956 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
6957 return handle_table_features_request(ofconn, oh);
6959 case OFPTYPE_PORT_STATS_REQUEST:
6960 return handle_port_stats_request(ofconn, oh);
6962 case OFPTYPE_QUEUE_STATS_REQUEST:
6963 return handle_queue_stats_request(ofconn, oh);
6965 case OFPTYPE_PORT_DESC_STATS_REQUEST:
6966 return handle_port_desc_stats_request(ofconn, oh);
6968 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
6969 return handle_flow_monitor_request(ofconn, oh);
6971 case OFPTYPE_METER_STATS_REQUEST:
6972 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
6973 return handle_meter_request(ofconn, oh, type);
6975 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
6976 return handle_meter_features_request(ofconn, oh);
6978 case OFPTYPE_GROUP_STATS_REQUEST:
6979 return handle_group_stats_request(ofconn, oh);
6981 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
6982 return handle_group_desc_stats_request(ofconn, oh);
6984 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
6985 return handle_group_features_stats_request(ofconn, oh);
6987 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
6988 return handle_queue_get_config_request(ofconn, oh);
6990 case OFPTYPE_BUNDLE_CONTROL:
6991 return handle_bundle_control(ofconn, oh);
6993 case OFPTYPE_BUNDLE_ADD_MESSAGE:
6994 return handle_bundle_add(ofconn, oh);
6998 case OFPTYPE_FEATURES_REPLY:
6999 case OFPTYPE_GET_CONFIG_REPLY:
7000 case OFPTYPE_PACKET_IN:
7001 case OFPTYPE_FLOW_REMOVED:
7002 case OFPTYPE_PORT_STATUS:
7003 case OFPTYPE_BARRIER_REPLY:
7004 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
7005 case OFPTYPE_DESC_STATS_REPLY:
7006 case OFPTYPE_FLOW_STATS_REPLY:
7007 case OFPTYPE_QUEUE_STATS_REPLY:
7008 case OFPTYPE_PORT_STATS_REPLY:
7009 case OFPTYPE_TABLE_STATS_REPLY:
7010 case OFPTYPE_AGGREGATE_STATS_REPLY:
7011 case OFPTYPE_PORT_DESC_STATS_REPLY:
7012 case OFPTYPE_ROLE_REPLY:
7013 case OFPTYPE_FLOW_MONITOR_PAUSED:
7014 case OFPTYPE_FLOW_MONITOR_RESUMED:
7015 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
7016 case OFPTYPE_GET_ASYNC_REPLY:
7017 case OFPTYPE_GROUP_STATS_REPLY:
7018 case OFPTYPE_GROUP_DESC_STATS_REPLY:
7019 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
7020 case OFPTYPE_METER_STATS_REPLY:
7021 case OFPTYPE_METER_CONFIG_STATS_REPLY:
7022 case OFPTYPE_METER_FEATURES_STATS_REPLY:
7023 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
7024 case OFPTYPE_ROLE_STATUS:
7026 if (ofpmsg_is_stat_request(oh)) {
7027 return OFPERR_OFPBRC_BAD_STAT;
7029 return OFPERR_OFPBRC_BAD_TYPE;
7035 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
7036 OVS_EXCLUDED(ofproto_mutex)
7038 enum ofperr error = handle_openflow__(ofconn, ofp_msg);
7041 ofconn_send_error(ofconn, ofp_msg->data, error);
7043 COVERAGE_INC(ofproto_recv_openflow);
7046 /* Asynchronous operations. */
7049 send_buffered_packet(const struct flow_mod_requester *req, uint32_t buffer_id,
7051 OVS_REQUIRES(ofproto_mutex)
7053 if (req && req->ofconn && buffer_id != UINT32_MAX) {
7054 struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn);
7055 struct dp_packet *packet;
7059 error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet,
7062 struct rule_execute *re;
7064 ofproto_rule_ref(rule);
7066 re = xmalloc(sizeof *re);
7068 re->in_port = in_port;
7069 re->packet = packet;
7071 if (!guarded_list_push_back(&ofproto->rule_executes,
7072 &re->list_node, 1024)) {
7073 ofproto_rule_unref(rule);
7074 dp_packet_delete(re->packet);
7078 ofconn_send_error(req->ofconn, req->request, error);
7084 pick_datapath_id(const struct ofproto *ofproto)
7086 const struct ofport *port;
7088 port = ofproto_get_port(ofproto, OFPP_LOCAL);
7090 uint8_t ea[ETH_ADDR_LEN];
7093 error = netdev_get_etheraddr(port->netdev, ea);
7095 return eth_addr_to_uint64(ea);
7097 VLOG_WARN("%s: could not get MAC address for %s (%s)",
7098 ofproto->name, netdev_get_name(port->netdev),
7099 ovs_strerror(error));
7101 return ofproto->fallback_dpid;
7105 pick_fallback_dpid(void)
7107 uint8_t ea[ETH_ADDR_LEN];
7108 eth_addr_nicira_random(ea);
7109 return eth_addr_to_uint64(ea);
7112 /* Table overflow policy. */
7114 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
7115 * to NULL if the table is not configured to evict rules or if the table
7116 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
7117 * or with no timeouts are not evictable.) */
7119 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
7120 OVS_REQUIRES(ofproto_mutex)
7122 struct eviction_group *evg;
7125 if (!table->eviction_fields) {
7129 /* In the common case, the outer and inner loops here will each be entered
7132 * - The inner loop normally "return"s in its first iteration. If the
7133 * eviction group has any evictable rules, then it always returns in
7136 * - The outer loop only iterates more than once if the largest eviction
7137 * group has no evictable rules.
7139 * - The outer loop can exit only if table's 'max_flows' is all filled up
7140 * by unevictable rules. */
7141 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
7144 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
7153 /* Eviction groups. */
7155 /* Returns the priority to use for an eviction_group that contains 'n_rules'
7156 * rules. The priority contains low-order random bits to ensure that eviction
7157 * groups with the same number of rules are prioritized randomly. */
7159 eviction_group_priority(size_t n_rules)
7161 uint16_t size = MIN(UINT16_MAX, n_rules);
7162 return (size << 16) | random_uint16();
7165 /* Updates 'evg', an eviction_group within 'table', following a change that
7166 * adds or removes rules in 'evg'. */
7168 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
7169 OVS_REQUIRES(ofproto_mutex)
7171 heap_change(&table->eviction_groups_by_size, &evg->size_node,
7172 eviction_group_priority(heap_count(&evg->rules)));
7175 /* Destroys 'evg', an eviction_group within 'table':
7177 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
7178 * rules themselves, just removes them from the eviction group.)
7180 * - Removes 'evg' from 'table'.
7184 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
7185 OVS_REQUIRES(ofproto_mutex)
7187 while (!heap_is_empty(&evg->rules)) {
7190 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
7191 rule->eviction_group = NULL;
7193 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
7194 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
7195 heap_destroy(&evg->rules);
7199 /* Removes 'rule' from its eviction group, if any. */
7201 eviction_group_remove_rule(struct rule *rule)
7202 OVS_REQUIRES(ofproto_mutex)
7204 if (rule->eviction_group) {
7205 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7206 struct eviction_group *evg = rule->eviction_group;
7208 rule->eviction_group = NULL;
7209 heap_remove(&evg->rules, &rule->evg_node);
7210 if (heap_is_empty(&evg->rules)) {
7211 eviction_group_destroy(table, evg);
7213 eviction_group_resized(table, evg);
7218 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
7219 * returns the hash value. */
7221 eviction_group_hash_rule(struct rule *rule)
7222 OVS_REQUIRES(ofproto_mutex)
7224 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7225 const struct mf_subfield *sf;
7229 hash = table->eviction_group_id_basis;
7230 miniflow_expand(&rule->cr.match.flow, &flow);
7231 for (sf = table->eviction_fields;
7232 sf < &table->eviction_fields[table->n_eviction_fields];
7235 if (mf_are_prereqs_ok(sf->field, &flow)) {
7236 union mf_value value;
7238 mf_get_value(sf->field, &flow, &value);
7240 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
7242 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
7243 unsigned int start = sf->ofs + sf->n_bits;
7244 bitwise_zero(&value, sf->field->n_bytes, start,
7245 sf->field->n_bytes * 8 - start);
7247 hash = hash_bytes(&value, sf->field->n_bytes, hash);
7249 hash = hash_int(hash, 0);
7256 /* Returns an eviction group within 'table' with the given 'id', creating one
7258 static struct eviction_group *
7259 eviction_group_find(struct oftable *table, uint32_t id)
7260 OVS_REQUIRES(ofproto_mutex)
7262 struct eviction_group *evg;
7264 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
7268 evg = xmalloc(sizeof *evg);
7269 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
7270 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
7271 eviction_group_priority(0));
7272 heap_init(&evg->rules);
7277 /* Returns an eviction priority for 'rule'. The return value should be
7278 * interpreted so that higher priorities make a rule more attractive candidates
7280 * Called only if have a timeout. */
7282 rule_eviction_priority(struct ofproto *ofproto, struct rule *rule)
7283 OVS_REQUIRES(ofproto_mutex)
7285 long long int expiration = LLONG_MAX;
7286 long long int modified;
7287 uint32_t expiration_offset;
7289 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
7290 ovs_mutex_lock(&rule->mutex);
7291 modified = rule->modified;
7292 ovs_mutex_unlock(&rule->mutex);
7294 if (rule->hard_timeout) {
7295 expiration = modified + rule->hard_timeout * 1000;
7297 if (rule->idle_timeout) {
7298 uint64_t packets, bytes;
7300 long long int idle_expiration;
7302 ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used);
7303 idle_expiration = used + rule->idle_timeout * 1000;
7304 expiration = MIN(expiration, idle_expiration);
7307 if (expiration == LLONG_MAX) {
7311 /* Calculate the time of expiration as a number of (approximate) seconds
7312 * after program startup.
7314 * This should work OK for program runs that last UINT32_MAX seconds or
7315 * less. Therefore, please restart OVS at least once every 136 years. */
7316 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
7318 /* Invert the expiration offset because we're using a max-heap. */
7319 return UINT32_MAX - expiration_offset;
7322 /* Adds 'rule' to an appropriate eviction group for its oftable's
7323 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
7324 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
7327 * The caller must ensure that 'rule' is not already in an eviction group. */
7329 eviction_group_add_rule(struct rule *rule)
7330 OVS_REQUIRES(ofproto_mutex)
7332 struct ofproto *ofproto = rule->ofproto;
7333 struct oftable *table = &ofproto->tables[rule->table_id];
7336 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
7337 * so no additional protection is needed. */
7338 has_timeout = rule->hard_timeout || rule->idle_timeout;
7340 if (table->eviction_fields && has_timeout) {
7341 struct eviction_group *evg;
7343 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
7345 rule->eviction_group = evg;
7346 heap_insert(&evg->rules, &rule->evg_node,
7347 rule_eviction_priority(ofproto, rule));
7348 eviction_group_resized(table, evg);
7354 /* Initializes 'table'. */
7356 oftable_init(struct oftable *table)
7358 memset(table, 0, sizeof *table);
7359 classifier_init(&table->cls, flow_segment_u64s);
7360 table->max_flows = UINT_MAX;
7362 atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
7364 classifier_set_prefix_fields(&table->cls, default_prefix_fields,
7365 ARRAY_SIZE(default_prefix_fields));
7367 atomic_init(&table->n_matched, 0);
7368 atomic_init(&table->n_missed, 0);
7371 /* Destroys 'table', including its classifier and eviction groups.
7373 * The caller is responsible for freeing 'table' itself. */
7375 oftable_destroy(struct oftable *table)
7377 ovs_assert(classifier_is_empty(&table->cls));
7378 oftable_disable_eviction(table);
7379 classifier_destroy(&table->cls);
7383 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
7384 * string, then 'table' will use its default name.
7386 * This only affects the name exposed for a table exposed through the OpenFlow
7387 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
7389 oftable_set_name(struct oftable *table, const char *name)
7391 if (name && name[0]) {
7392 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
7393 if (!table->name || strncmp(name, table->name, len)) {
7395 table->name = xmemdup0(name, len);
7403 /* oftables support a choice of two policies when adding a rule would cause the
7404 * number of flows in the table to exceed the configured maximum number: either
7405 * they can refuse to add the new flow or they can evict some existing flow.
7406 * This function configures the former policy on 'table'. */
7408 oftable_disable_eviction(struct oftable *table)
7409 OVS_REQUIRES(ofproto_mutex)
7411 if (table->eviction_fields) {
7412 struct eviction_group *evg, *next;
7414 HMAP_FOR_EACH_SAFE (evg, next, id_node,
7415 &table->eviction_groups_by_id) {
7416 eviction_group_destroy(table, evg);
7418 hmap_destroy(&table->eviction_groups_by_id);
7419 heap_destroy(&table->eviction_groups_by_size);
7421 free(table->eviction_fields);
7422 table->eviction_fields = NULL;
7423 table->n_eviction_fields = 0;
7427 /* oftables support a choice of two policies when adding a rule would cause the
7428 * number of flows in the table to exceed the configured maximum number: either
7429 * they can refuse to add the new flow or they can evict some existing flow.
7430 * This function configures the latter policy on 'table', with fairness based
7431 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
7432 * 'n_fields' as 0 disables fairness.) */
7434 oftable_enable_eviction(struct oftable *table,
7435 const struct mf_subfield *fields, size_t n_fields)
7436 OVS_REQUIRES(ofproto_mutex)
7440 if (table->eviction_fields
7441 && n_fields == table->n_eviction_fields
7443 || !memcmp(fields, table->eviction_fields,
7444 n_fields * sizeof *fields))) {
7449 oftable_disable_eviction(table);
7451 table->n_eviction_fields = n_fields;
7452 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
7454 table->eviction_group_id_basis = random_uint32();
7455 hmap_init(&table->eviction_groups_by_id);
7456 heap_init(&table->eviction_groups_by_size);
7458 CLS_FOR_EACH (rule, cr, &table->cls) {
7459 eviction_group_add_rule(rule);
7463 /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted
7464 * it to the classifier. */
7466 ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule)
7467 OVS_REQUIRES(ofproto_mutex)
7469 const struct rule_actions *actions = rule_get_actions(rule);
7471 ovs_assert(rule->removed);
7473 if (rule->hard_timeout || rule->idle_timeout) {
7474 list_insert(&ofproto->expirable, &rule->expirable);
7476 cookies_insert(ofproto, rule);
7477 eviction_group_add_rule(rule);
7478 if (actions->has_meter) {
7479 meter_insert_rule(rule);
7481 rule->removed = false;
7484 /* Removes 'rule' from the ofproto data structures. Caller may have deferred
7485 * the removal from the classifier. */
7487 ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule)
7488 OVS_REQUIRES(ofproto_mutex)
7490 ovs_assert(!rule->removed);
7492 cookies_remove(ofproto, rule);
7494 eviction_group_remove_rule(rule);
7495 if (!list_is_empty(&rule->expirable)) {
7496 list_remove(&rule->expirable);
7498 if (!list_is_empty(&rule->meter_list_node)) {
7499 list_remove(&rule->meter_list_node);
7500 list_init(&rule->meter_list_node);
7503 rule->removed = true;
7506 /* unixctl commands. */
7509 ofproto_lookup(const char *name)
7511 struct ofproto *ofproto;
7513 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
7515 if (!strcmp(ofproto->name, name)) {
7523 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
7524 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7526 struct ofproto *ofproto;
7530 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
7531 ds_put_format(&results, "%s\n", ofproto->name);
7533 unixctl_command_reply(conn, ds_cstr(&results));
7534 ds_destroy(&results);
7538 ofproto_unixctl_init(void)
7540 static bool registered;
7546 unixctl_command_register("ofproto/list", "", 0, 0,
7547 ofproto_unixctl_list, NULL);
7550 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
7552 * This is deprecated. It is only for compatibility with broken device drivers
7553 * in old versions of Linux that do not properly support VLANs when VLAN
7554 * devices are not used. When broken device drivers are no longer in
7555 * widespread use, we will delete these interfaces. */
7557 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
7558 * (exactly) by an OpenFlow rule in 'ofproto'. */
7560 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
7563 struct cls_rule target;
7564 const struct oftable *oftable;
7566 match_init_catchall(&match);
7567 match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI));
7568 cls_rule_init(&target, &match, 0, CLS_MAX_VERSION);
7570 free(ofproto->vlan_bitmap);
7571 ofproto->vlan_bitmap = bitmap_allocate(4096);
7572 ofproto->vlans_changed = false;
7574 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
7577 CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) {
7578 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
7579 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
7581 bitmap_set1(vlan_bitmap, vid);
7582 bitmap_set1(ofproto->vlan_bitmap, vid);
7587 cls_rule_destroy(&target);
7590 /* Returns true if new VLANs have come into use by the flow table since the
7591 * last call to ofproto_get_vlan_usage().
7593 * We don't track when old VLANs stop being used. */
7595 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
7597 return ofproto->vlans_changed;
7600 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
7601 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
7602 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
7603 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
7604 * then the VLAN device is un-enslaved. */
7606 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
7607 ofp_port_t realdev_ofp_port, int vid)
7609 struct ofport *ofport;
7612 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
7614 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
7616 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
7617 ofproto->name, vlandev_ofp_port);
7621 if (!ofproto->ofproto_class->set_realdev) {
7622 if (!vlandev_ofp_port) {
7625 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
7629 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
7631 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
7632 ofproto->name, vlandev_ofp_port,
7633 netdev_get_name(ofport->netdev), ovs_strerror(error));