2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 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"
50 #include "poll-loop.h"
58 #include "unaligned.h"
60 #include "openvswitch/vlog.h"
63 VLOG_DEFINE_THIS_MODULE(ofproto);
65 COVERAGE_DEFINE(ofproto_flush);
66 COVERAGE_DEFINE(ofproto_packet_out);
67 COVERAGE_DEFINE(ofproto_queue_req);
68 COVERAGE_DEFINE(ofproto_recv_openflow);
69 COVERAGE_DEFINE(ofproto_reinit_ports);
70 COVERAGE_DEFINE(ofproto_update_port);
72 /* Default fields to use for prefix tries in each flow table, unless something
73 * else is configured. */
74 const enum mf_field_id default_prefix_fields[2] =
75 { MFF_IPV4_DST, MFF_IPV4_SRC };
78 static void oftable_init(struct oftable *);
79 static void oftable_destroy(struct oftable *);
81 static void oftable_set_name(struct oftable *, const char *name);
83 static enum ofperr evict_rules_from_table(struct oftable *,
84 unsigned int extra_space)
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 static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex);
93 /* A set of rules within a single OpenFlow table (oftable) that have the same
94 * values for the oftable's eviction_fields. A rule to be evicted, when one is
95 * needed, is taken from the eviction group that contains the greatest number
98 * An oftable owns any number of eviction groups, each of which contains any
101 * Membership in an eviction group is imprecise, based on the hash of the
102 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
103 * That is, if two rules have different eviction_fields, but those
104 * eviction_fields hash to the same value, then they will belong to the same
105 * eviction_group anyway.
107 * (When eviction is not enabled on an oftable, we don't track any eviction
108 * groups, to save time and space.) */
109 struct eviction_group {
110 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
111 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
112 struct heap rules; /* Contains "struct rule"s. */
115 static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
116 OVS_REQUIRES(ofproto_mutex);
117 static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *)
118 OVS_REQUIRES(ofproto_mutex);;
119 static void eviction_group_add_rule(struct rule *)
120 OVS_REQUIRES(ofproto_mutex);
121 static void eviction_group_remove_rule(struct rule *)
122 OVS_REQUIRES(ofproto_mutex);
124 /* Criteria that flow_mod and other operations use for selecting rules on
125 * which to operate. */
126 struct rule_criteria {
127 /* An OpenFlow table or 255 for all tables. */
130 /* OpenFlow matching criteria. Interpreted different in "loose" way by
131 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
132 * defined in the OpenFlow spec. */
135 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
136 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
137 * The rule will not be selected if M is 1 and B != C. */
139 ovs_be64 cookie_mask;
141 /* Selection based on actions within a rule:
143 * If out_port != OFPP_ANY, selects only rules that output to out_port.
144 * If out_group != OFPG_ALL, select only rules that output to out_group. */
148 /* If true, collects only rules that are modifiable. */
150 bool include_readonly;
153 static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
154 const struct match *match, int priority,
155 ovs_be64 cookie, ovs_be64 cookie_mask,
156 ofp_port_t out_port, uint32_t out_group);
157 static void rule_criteria_require_rw(struct rule_criteria *,
158 bool can_write_readonly);
159 static void rule_criteria_destroy(struct rule_criteria *);
161 static enum ofperr collect_rules_loose(struct ofproto *,
162 const struct rule_criteria *,
163 struct rule_collection *);
165 /* A packet that needs to be passed to rule_execute().
167 * (We can't do this immediately from ofopgroup_complete() because that holds
168 * ofproto_mutex, which rule_execute() needs released.) */
169 struct rule_execute {
170 struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */
171 struct rule *rule; /* Owns a reference to the rule. */
173 struct ofpbuf *packet; /* Owns the packet. */
176 static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
177 static void destroy_rule_executes(struct ofproto *);
179 struct learned_cookie {
181 /* In struct ofproto's 'learned_cookies' hmap. */
182 struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex);
184 /* In 'dead_cookies' list when removed from hmap. */
185 struct ovs_list list_node;
189 ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex);
190 uint8_t table_id OVS_GUARDED_BY(ofproto_mutex);
192 /* Number of references from "learn" actions.
194 * When this drops to 0, all of the flows in 'table_id' with the specified
195 * 'cookie' are deleted. */
196 int n OVS_GUARDED_BY(ofproto_mutex);
199 static const struct ofpact_learn *next_learn_with_delete(
200 const struct rule_actions *, const struct ofpact_learn *start);
202 static void learned_cookies_inc(struct ofproto *, const struct rule_actions *)
203 OVS_REQUIRES(ofproto_mutex);
204 static void learned_cookies_dec(struct ofproto *, const struct rule_actions *,
205 struct ovs_list *dead_cookies)
206 OVS_REQUIRES(ofproto_mutex);
207 static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies)
208 OVS_REQUIRES(ofproto_mutex);
211 static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
212 static void ofport_destroy(struct ofport *);
214 static void update_port(struct ofproto *, const char *devname);
215 static int init_ports(struct ofproto *);
216 static void reinit_ports(struct ofproto *);
218 static long long int ofport_get_usage(const struct ofproto *,
219 ofp_port_t ofp_port);
220 static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
221 long long int last_used);
222 static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
226 * Keeps track of the currently used and recently used ofport values and is
227 * used to prevent immediate recycling of ofport values. */
228 struct ofport_usage {
229 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
230 ofp_port_t ofp_port; /* OpenFlow port number. */
231 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
232 represents in-use ofports. */
236 static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
237 static bool rule_is_readonly(const struct rule *);
238 static void ofproto_rule_remove__(struct ofproto *, struct rule *)
239 OVS_REQUIRES(ofproto_mutex);
241 /* The source of a flow_mod request, in the code that processes flow_mods.
243 * A flow table modification request can be generated externally, via OpenFlow,
244 * or internally through a function call. This structure indicates the source
245 * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't
246 * meaningful and thus supplied as NULL. */
247 struct flow_mod_requester {
248 struct ofconn *ofconn; /* Connection on which flow_mod arrived. */
249 ovs_be32 xid; /* OpenFlow xid of flow_mod request. */
253 static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *,
254 const struct flow_mod_requester *);
256 static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *,
257 const struct rule_collection *,
258 const struct flow_mod_requester *);
259 static void delete_flows__(const struct rule_collection *,
260 enum ofp_flow_removed_reason,
261 const struct flow_mod_requester *)
262 OVS_REQUIRES(ofproto_mutex);
264 static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id,
266 OVS_REQUIRES(ofproto_mutex);
268 static bool ofproto_group_exists__(const struct ofproto *ofproto,
270 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
271 static bool ofproto_group_exists(const struct ofproto *ofproto,
273 OVS_EXCLUDED(ofproto->groups_rwlock);
274 static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
275 static void handle_openflow(struct ofconn *, const struct ofpbuf *);
276 static enum ofperr handle_flow_mod__(struct ofproto *,
277 struct ofputil_flow_mod *,
278 const struct flow_mod_requester *)
279 OVS_EXCLUDED(ofproto_mutex);
280 static void calc_duration(long long int start, long long int now,
281 uint32_t *sec, uint32_t *nsec);
284 static uint64_t pick_datapath_id(const struct ofproto *);
285 static uint64_t pick_fallback_dpid(void);
286 static void ofproto_destroy__(struct ofproto *);
287 static void update_mtu(struct ofproto *, struct ofport *);
288 static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
289 static void meter_insert_rule(struct rule *);
292 static void ofproto_unixctl_init(void);
294 /* All registered ofproto classes, in probe order. */
295 static const struct ofproto_class **ofproto_classes;
296 static size_t n_ofproto_classes;
297 static size_t allocated_ofproto_classes;
299 /* Global lock that protects all flow table operations. */
300 struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
302 unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
303 unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
305 size_t n_handlers, n_revalidators;
309 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
310 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
312 /* Initial mappings of port to OpenFlow number mappings. */
313 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
315 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
317 /* The default value of true waits for flow restore. */
318 static bool flow_restore_wait = true;
320 /* Must be called to initialize the ofproto library.
322 * The caller may pass in 'iface_hints', which contains an shash of
323 * "iface_hint" elements indexed by the interface's name. The provider
324 * may use these hints to describe the startup configuration in order to
325 * reinitialize its state. The caller owns the provided data, so a
326 * provider will make copies of anything required. An ofproto provider
327 * will remove any existing state that is not described by the hint, and
328 * may choose to remove it all. */
330 ofproto_init(const struct shash *iface_hints)
332 struct shash_node *node;
335 ofproto_class_register(&ofproto_dpif_class);
337 /* Make a local copy, since we don't own 'iface_hints' elements. */
338 SHASH_FOR_EACH(node, iface_hints) {
339 const struct iface_hint *orig_hint = node->data;
340 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
341 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
343 new_hint->br_name = xstrdup(orig_hint->br_name);
344 new_hint->br_type = xstrdup(br_type);
345 new_hint->ofp_port = orig_hint->ofp_port;
347 shash_add(&init_ofp_ports, node->name, new_hint);
350 for (i = 0; i < n_ofproto_classes; i++) {
351 ofproto_classes[i]->init(&init_ofp_ports);
355 /* 'type' should be a normalized datapath type, as returned by
356 * ofproto_normalize_type(). Returns the corresponding ofproto_class
357 * structure, or a null pointer if there is none registered for 'type'. */
358 static const struct ofproto_class *
359 ofproto_class_find__(const char *type)
363 for (i = 0; i < n_ofproto_classes; i++) {
364 const struct ofproto_class *class = ofproto_classes[i];
369 class->enumerate_types(&types);
370 found = sset_contains(&types, type);
371 sset_destroy(&types);
377 VLOG_WARN("unknown datapath type %s", type);
381 /* Registers a new ofproto class. After successful registration, new ofprotos
382 * of that type can be created using ofproto_create(). */
384 ofproto_class_register(const struct ofproto_class *new_class)
388 for (i = 0; i < n_ofproto_classes; i++) {
389 if (ofproto_classes[i] == new_class) {
394 if (n_ofproto_classes >= allocated_ofproto_classes) {
395 ofproto_classes = x2nrealloc(ofproto_classes,
396 &allocated_ofproto_classes,
397 sizeof *ofproto_classes);
399 ofproto_classes[n_ofproto_classes++] = new_class;
403 /* Unregisters a datapath provider. 'type' must have been previously
404 * registered and not currently be in use by any ofprotos. After
405 * unregistration new datapaths of that type cannot be opened using
406 * ofproto_create(). */
408 ofproto_class_unregister(const struct ofproto_class *class)
412 for (i = 0; i < n_ofproto_classes; i++) {
413 if (ofproto_classes[i] == class) {
414 for (i++; i < n_ofproto_classes; i++) {
415 ofproto_classes[i - 1] = ofproto_classes[i];
421 VLOG_WARN("attempted to unregister an ofproto class that is not "
426 /* Clears 'types' and enumerates all registered ofproto types into it. The
427 * caller must first initialize the sset. */
429 ofproto_enumerate_types(struct sset *types)
434 for (i = 0; i < n_ofproto_classes; i++) {
435 ofproto_classes[i]->enumerate_types(types);
439 /* Returns the fully spelled out name for the given ofproto 'type'.
441 * Normalized type string can be compared with strcmp(). Unnormalized type
442 * string might be the same even if they have different spellings. */
444 ofproto_normalize_type(const char *type)
446 return type && type[0] ? type : "system";
449 /* Clears 'names' and enumerates the names of all known created ofprotos with
450 * the given 'type'. The caller must first initialize the sset. Returns 0 if
451 * successful, otherwise a positive errno value.
453 * Some kinds of datapaths might not be practically enumerable. This is not
454 * considered an error. */
456 ofproto_enumerate_names(const char *type, struct sset *names)
458 const struct ofproto_class *class = ofproto_class_find__(type);
459 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
463 ofproto_create(const char *datapath_name, const char *datapath_type,
464 struct ofproto **ofprotop)
466 const struct ofproto_class *class;
467 struct ofproto *ofproto;
473 ofproto_unixctl_init();
475 datapath_type = ofproto_normalize_type(datapath_type);
476 class = ofproto_class_find__(datapath_type);
478 VLOG_WARN("could not create datapath %s of unknown type %s",
479 datapath_name, datapath_type);
483 ofproto = class->alloc();
485 VLOG_ERR("failed to allocate datapath %s of type %s",
486 datapath_name, datapath_type);
491 ovs_mutex_lock(&ofproto_mutex);
492 memset(ofproto, 0, sizeof *ofproto);
493 ofproto->ofproto_class = class;
494 ofproto->name = xstrdup(datapath_name);
495 ofproto->type = xstrdup(datapath_type);
496 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
497 hash_string(ofproto->name, 0));
498 ofproto->datapath_id = 0;
499 ofproto->forward_bpdu = false;
500 ofproto->fallback_dpid = pick_fallback_dpid();
501 ofproto->mfr_desc = NULL;
502 ofproto->hw_desc = NULL;
503 ofproto->sw_desc = NULL;
504 ofproto->serial_desc = NULL;
505 ofproto->dp_desc = NULL;
506 ofproto->frag_handling = OFPC_FRAG_NORMAL;
507 hmap_init(&ofproto->ports);
508 hmap_init(&ofproto->ofport_usage);
509 shash_init(&ofproto->port_by_name);
510 simap_init(&ofproto->ofp_requests);
511 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
512 ofproto->eviction_group_timer = LLONG_MIN;
513 ofproto->tables = NULL;
514 ofproto->n_tables = 0;
515 hindex_init(&ofproto->cookies);
516 hmap_init(&ofproto->learned_cookies);
517 list_init(&ofproto->expirable);
518 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
519 guarded_list_init(&ofproto->rule_executes);
520 ofproto->vlan_bitmap = NULL;
521 ofproto->vlans_changed = false;
522 ofproto->min_mtu = INT_MAX;
523 ovs_rwlock_init(&ofproto->groups_rwlock);
524 hmap_init(&ofproto->groups);
525 ovs_mutex_unlock(&ofproto_mutex);
526 ofproto->ogf.types = 0xf;
527 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
528 OFPGFC_SELECT_WEIGHT;
529 for (i = 0; i < 4; i++) {
530 ofproto->ogf.max_groups[i] = OFPG_MAX;
531 ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
534 error = ofproto->ofproto_class->construct(ofproto);
536 VLOG_ERR("failed to open datapath %s: %s",
537 datapath_name, ovs_strerror(error));
538 connmgr_destroy(ofproto->connmgr);
539 ofproto_destroy__(ofproto);
543 /* Check that hidden tables, if any, are at the end. */
544 ovs_assert(ofproto->n_tables);
545 for (i = 0; i + 1 < ofproto->n_tables; i++) {
546 enum oftable_flags flags = ofproto->tables[i].flags;
547 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
549 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
552 ofproto->datapath_id = pick_datapath_id(ofproto);
555 /* Initialize meters table. */
556 if (ofproto->ofproto_class->meter_get_features) {
557 ofproto->ofproto_class->meter_get_features(ofproto,
558 &ofproto->meter_features);
560 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
562 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
563 * sizeof(struct meter *));
569 /* Must be called (only) by an ofproto implementation in its constructor
570 * function. See the large comment on 'construct' in struct ofproto_class for
573 ofproto_init_tables(struct ofproto *ofproto, int n_tables)
575 struct oftable *table;
577 ovs_assert(!ofproto->n_tables);
578 ovs_assert(n_tables >= 1 && n_tables <= 255);
580 ofproto->n_tables = n_tables;
581 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
582 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
587 /* To be optionally called (only) by an ofproto implementation in its
588 * constructor function. See the large comment on 'construct' in struct
589 * ofproto_class for details.
591 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
592 * will then ensure that actions passed into the ofproto implementation will
593 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
594 * function is not called, there will be no such restriction.
596 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
597 * the 'max_ports' restriction. */
599 ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
601 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
602 ofproto->max_ports = max_ports;
606 ofproto_get_datapath_id(const struct ofproto *ofproto)
608 return ofproto->datapath_id;
612 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
614 uint64_t old_dpid = p->datapath_id;
615 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
616 if (p->datapath_id != old_dpid) {
617 /* Force all active connections to reconnect, since there is no way to
618 * notify a controller that the datapath ID has changed. */
619 ofproto_reconnect_controllers(p);
624 ofproto_set_controllers(struct ofproto *p,
625 const struct ofproto_controller *controllers,
626 size_t n_controllers, uint32_t allowed_versions)
628 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
633 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
635 connmgr_set_fail_mode(p->connmgr, fail_mode);
638 /* Drops the connections between 'ofproto' and all of its controllers, forcing
639 * them to reconnect. */
641 ofproto_reconnect_controllers(struct ofproto *ofproto)
643 connmgr_reconnect(ofproto->connmgr);
646 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
647 * in-band control should guarantee access, in the same way that in-band
648 * control guarantees access to OpenFlow controllers. */
650 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
651 const struct sockaddr_in *extras, size_t n)
653 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
656 /* Sets the OpenFlow queue used by flows set up by in-band control on
657 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
658 * flows will use the default queue. */
660 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
662 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
665 /* Sets the number of flows at which eviction from the kernel flow table
668 ofproto_set_flow_limit(unsigned limit)
670 ofproto_flow_limit = limit;
673 /* Sets the maximum idle time for flows in the datapath before they are
676 ofproto_set_max_idle(unsigned max_idle)
678 ofproto_max_idle = max_idle;
681 /* If forward_bpdu is true, the NORMAL action will forward frames with
682 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
683 * the NORMAL action will drop these frames. */
685 ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
687 bool old_val = ofproto->forward_bpdu;
688 ofproto->forward_bpdu = forward_bpdu;
689 if (old_val != ofproto->forward_bpdu) {
690 if (ofproto->ofproto_class->forward_bpdu_changed) {
691 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
696 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
697 * 'idle_time', in seconds, and the maximum number of MAC table entries to
700 ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
703 if (ofproto->ofproto_class->set_mac_table_config) {
704 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
709 /* Multicast snooping configuration. */
711 /* Configures multicast snooping on 'ofproto' using the settings
712 * defined in 's'. If 's' is NULL, disables multicast snooping.
714 * Returns 0 if successful, otherwise a positive errno value. */
716 ofproto_set_mcast_snooping(struct ofproto *ofproto,
717 const struct ofproto_mcast_snooping_settings *s)
719 return (ofproto->ofproto_class->set_mcast_snooping
720 ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
724 /* Configures multicast snooping flood setting on 'ofp_port' of 'ofproto'.
726 * Returns 0 if successful, otherwise a positive errno value.*/
728 ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, bool flood)
730 return (ofproto->ofproto_class->set_mcast_snooping_port
731 ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux,
737 ofproto_set_n_dpdk_rxqs(int n_rxqs)
739 n_dpdk_rxqs = MAX(n_rxqs, 0);
743 ofproto_set_cpu_mask(const char *cmask)
747 pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
751 ofproto_set_threads(int n_handlers_, int n_revalidators_)
753 int threads = MAX(count_cpu_cores(), 2);
755 n_revalidators = MAX(n_revalidators_, 0);
756 n_handlers = MAX(n_handlers_, 0);
758 if (!n_revalidators) {
759 n_revalidators = n_handlers
760 ? MAX(threads - (int) n_handlers, 1)
765 n_handlers = MAX(threads - (int) n_revalidators, 1);
770 ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
773 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
777 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
779 return connmgr_set_snoops(ofproto->connmgr, snoops);
783 ofproto_set_netflow(struct ofproto *ofproto,
784 const struct netflow_options *nf_options)
786 if (nf_options && sset_is_empty(&nf_options->collectors)) {
790 if (ofproto->ofproto_class->set_netflow) {
791 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
793 return nf_options ? EOPNOTSUPP : 0;
798 ofproto_set_sflow(struct ofproto *ofproto,
799 const struct ofproto_sflow_options *oso)
801 if (oso && sset_is_empty(&oso->targets)) {
805 if (ofproto->ofproto_class->set_sflow) {
806 return ofproto->ofproto_class->set_sflow(ofproto, oso);
808 return oso ? EOPNOTSUPP : 0;
813 ofproto_set_ipfix(struct ofproto *ofproto,
814 const struct ofproto_ipfix_bridge_exporter_options *bo,
815 const struct ofproto_ipfix_flow_exporter_options *fo,
818 if (ofproto->ofproto_class->set_ipfix) {
819 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
821 return (bo || fo) ? EOPNOTSUPP : 0;
826 ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
828 flow_restore_wait = flow_restore_wait_db;
832 ofproto_get_flow_restore_wait(void)
834 return flow_restore_wait;
838 /* Spanning Tree Protocol (STP) configuration. */
840 /* Configures STP on 'ofproto' using the settings defined in 's'. If
841 * 's' is NULL, disables STP.
843 * Returns 0 if successful, otherwise a positive errno value. */
845 ofproto_set_stp(struct ofproto *ofproto,
846 const struct ofproto_stp_settings *s)
848 return (ofproto->ofproto_class->set_stp
849 ? ofproto->ofproto_class->set_stp(ofproto, s)
853 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
854 * 'enabled' member of 's' is false, then the other members are not
857 * Returns 0 if successful, otherwise a positive errno value. */
859 ofproto_get_stp_status(struct ofproto *ofproto,
860 struct ofproto_stp_status *s)
862 return (ofproto->ofproto_class->get_stp_status
863 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
867 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
868 * in 's'. The caller is responsible for assigning STP port numbers
869 * (using the 'port_num' member in the range of 1 through 255, inclusive)
870 * and ensuring there are no duplicates. If the 's' is NULL, then STP
871 * is disabled on the port.
873 * Returns 0 if successful, otherwise a positive errno value.*/
875 ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
876 const struct ofproto_port_stp_settings *s)
878 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
880 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
881 ofproto->name, ofp_port);
885 return (ofproto->ofproto_class->set_stp_port
886 ? ofproto->ofproto_class->set_stp_port(ofport, s)
890 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
891 * 's'. If the 'enabled' member in 's' is false, then the other members
892 * are not meaningful.
894 * Returns 0 if successful, otherwise a positive errno value.*/
896 ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
897 struct ofproto_port_stp_status *s)
899 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
901 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
902 "port %"PRIu16, ofproto->name, ofp_port);
906 return (ofproto->ofproto_class->get_stp_port_status
907 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
911 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
912 * 's'. If the 'enabled' member in 's' is false, then the other members
913 * are not meaningful.
915 * Returns 0 if successful, otherwise a positive errno value.*/
917 ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
918 struct ofproto_port_stp_stats *s)
920 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
922 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
923 "port %"PRIu16, ofproto->name, ofp_port);
927 return (ofproto->ofproto_class->get_stp_port_stats
928 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
932 /* Rapid Spanning Tree Protocol (RSTP) configuration. */
934 /* Configures RSTP on 'ofproto' using the settings defined in 's'. If
935 * 's' is NULL, disables RSTP.
937 * Returns 0 if successful, otherwise a positive errno value. */
939 ofproto_set_rstp(struct ofproto *ofproto,
940 const struct ofproto_rstp_settings *s)
942 if (!ofproto->ofproto_class->set_rstp) {
945 ofproto->ofproto_class->set_rstp(ofproto, s);
949 /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the
950 * 'enabled' member of 's' is false, then the other members are not
953 * Returns 0 if successful, otherwise a positive errno value. */
955 ofproto_get_rstp_status(struct ofproto *ofproto,
956 struct ofproto_rstp_status *s)
958 if (!ofproto->ofproto_class->get_rstp_status) {
961 ofproto->ofproto_class->get_rstp_status(ofproto, s);
965 /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
966 * in 's'. The caller is responsible for assigning RSTP port numbers
967 * (using the 'port_num' member in the range of 1 through 255, inclusive)
968 * and ensuring there are no duplicates. If the 's' is NULL, then RSTP
969 * is disabled on the port.
971 * Returns 0 if successful, otherwise a positive errno value.*/
973 ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
974 const struct ofproto_port_rstp_settings *s)
976 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
978 VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
979 ofproto->name, ofp_port);
983 if (!ofproto->ofproto_class->set_rstp_port) {
986 ofproto->ofproto_class->set_rstp_port(ofport, s);
990 /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
991 * 's'. If the 'enabled' member in 's' is false, then the other members
992 * are not meaningful.
994 * Returns 0 if successful, otherwise a positive errno value.*/
996 ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
997 struct ofproto_port_rstp_status *s)
999 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1001 VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
1002 "port %"PRIu16, ofproto->name, ofp_port);
1006 if (!ofproto->ofproto_class->get_rstp_port_status) {
1009 ofproto->ofproto_class->get_rstp_port_status(ofport, s);
1013 /* Queue DSCP configuration. */
1015 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
1016 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
1017 * to implement QoS. Instead, it is used to implement features which require
1018 * knowledge of what queues exist on a port, and some basic information about
1021 * Returns 0 if successful, otherwise a positive errno value. */
1023 ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
1024 const struct ofproto_port_queue *queues,
1027 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1030 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
1031 ofproto->name, ofp_port);
1035 return (ofproto->ofproto_class->set_queues
1036 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
1040 /* Connectivity Fault Management configuration. */
1042 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
1044 ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
1046 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1047 if (ofport && ofproto->ofproto_class->set_cfm) {
1048 ofproto->ofproto_class->set_cfm(ofport, NULL);
1052 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
1053 * basic configuration from the configuration members in 'cfm', and the remote
1054 * maintenance point ID from remote_mpid. Ignores the statistics members of
1057 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
1059 ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
1060 const struct cfm_settings *s)
1062 struct ofport *ofport;
1065 ofport = ofproto_get_port(ofproto, ofp_port);
1067 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
1068 ofproto->name, ofp_port);
1072 /* XXX: For configuration simplicity, we only support one remote_mpid
1073 * outside of the CFM module. It's not clear if this is the correct long
1074 * term solution or not. */
1075 error = (ofproto->ofproto_class->set_cfm
1076 ? ofproto->ofproto_class->set_cfm(ofport, s)
1079 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
1080 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1081 ovs_strerror(error));
1085 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
1086 * 'ofproto' does not have a port 'ofp_port'. */
1088 ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
1089 const struct smap *cfg)
1091 struct ofport *ofport;
1094 ofport = ofproto_get_port(ofproto, ofp_port);
1096 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1097 ofproto->name, ofp_port);
1101 error = (ofproto->ofproto_class->set_bfd
1102 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1105 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1106 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1107 ovs_strerror(error));
1111 /* Checks the status change of BFD on 'ofport'.
1113 * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */
1115 ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
1117 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1118 return (ofport && ofproto->ofproto_class->bfd_status_changed
1119 ? ofproto->ofproto_class->bfd_status_changed(ofport)
1123 /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
1124 * success. Returns a positive errno otherwise. Has no effect if 'ofp_port'
1125 * is not an OpenFlow port in 'ofproto'.
1127 * The caller must provide and own '*status'. */
1129 ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1130 struct smap *status)
1132 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1133 return (ofport && ofproto->ofproto_class->get_bfd_status
1134 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1138 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1139 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1140 * 0 if LACP partner information is not current (generally indicating a
1141 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1143 ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
1145 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1146 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1147 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
1152 ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats)
1154 struct ofproto *ofproto = port->ofproto;
1157 if (ofproto->ofproto_class->port_get_lacp_stats) {
1158 error = ofproto->ofproto_class->port_get_lacp_stats(port, stats);
1168 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1169 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1170 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1171 * configuration plus, if there is more than one slave, a bonding
1174 * If 'aux' is already registered then this function updates its configuration
1175 * to 's'. Otherwise, this function registers a new bundle.
1177 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1180 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1181 const struct ofproto_bundle_settings *s)
1183 return (ofproto->ofproto_class->bundle_set
1184 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1188 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1189 * If no such bundle has been registered, this has no effect. */
1191 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
1193 return ofproto_bundle_register(ofproto, aux, NULL);
1197 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1198 * If 'aux' is already registered then this function updates its configuration
1199 * to 's'. Otherwise, this function registers a new mirror. */
1201 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1202 const struct ofproto_mirror_settings *s)
1204 return (ofproto->ofproto_class->mirror_set
1205 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1209 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1210 * If no mirror has been registered, this has no effect. */
1212 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
1214 return ofproto_mirror_register(ofproto, aux, NULL);
1217 /* Retrieves statistics from mirror associated with client data pointer
1218 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1219 * 'bytes', respectively. If a particular counters is not supported,
1220 * the appropriate argument is set to UINT64_MAX. */
1222 ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1223 uint64_t *packets, uint64_t *bytes)
1225 if (!ofproto->ofproto_class->mirror_get_stats) {
1226 *packets = *bytes = UINT64_MAX;
1230 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1234 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1235 * which all packets are flooded, instead of using MAC learning. If
1236 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1238 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1241 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
1243 return (ofproto->ofproto_class->set_flood_vlans
1244 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1248 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1249 * output for a mirror. */
1251 ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
1253 return (ofproto->ofproto_class->is_mirror_output_bundle
1254 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1258 /* Configuration of OpenFlow tables. */
1260 /* Returns the number of OpenFlow tables in 'ofproto'. */
1262 ofproto_get_n_tables(const struct ofproto *ofproto)
1264 return ofproto->n_tables;
1267 /* Returns the number of Controller visible OpenFlow tables
1268 * in 'ofproto'. This number will exclude Hidden tables.
1269 * This funtion's return value should be less or equal to that of
1270 * ofproto_get_n_tables() . */
1272 ofproto_get_n_visible_tables(const struct ofproto *ofproto)
1274 uint8_t n = ofproto->n_tables;
1276 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1277 * if present, are always at the end.) */
1278 while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) {
1285 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1286 * settings from 's'. 'table_id' must be in the range 0 through the number of
1287 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1289 * For read-only tables, only the name may be configured. */
1291 ofproto_configure_table(struct ofproto *ofproto, int table_id,
1292 const struct ofproto_table_settings *s)
1294 struct oftable *table;
1296 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
1297 table = &ofproto->tables[table_id];
1299 oftable_set_name(table, s->name);
1301 if (table->flags & OFTABLE_READONLY) {
1306 oftable_enable_eviction(table, s->groups, s->n_groups);
1308 oftable_disable_eviction(table);
1311 table->max_flows = s->max_flows;
1313 if (classifier_set_prefix_fields(&table->cls,
1314 s->prefix_fields, s->n_prefix_fields)) {
1315 /* XXX: Trigger revalidation. */
1318 ovs_mutex_lock(&ofproto_mutex);
1319 evict_rules_from_table(table, 0);
1320 ovs_mutex_unlock(&ofproto_mutex);
1324 ofproto_has_snoops(const struct ofproto *ofproto)
1326 return connmgr_has_snoops(ofproto->connmgr);
1330 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
1332 connmgr_get_snoops(ofproto->connmgr, snoops);
1335 /* Deletes 'rule' from 'ofproto'.
1337 * Within an ofproto implementation, this function allows an ofproto
1338 * implementation to destroy any rules that remain when its ->destruct()
1339 * function is called. This function is not suitable for use elsewhere in an
1340 * ofproto implementation.
1342 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1343 * Cycle" in ofproto-provider.h. */
1345 ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
1346 OVS_EXCLUDED(ofproto_mutex)
1348 /* This skips the ofmonitor and flow-removed notifications because the
1349 * switch is being deleted and any OpenFlow channels have been or soon will
1351 ovs_mutex_lock(&ofproto_mutex);
1352 oftable_remove_rule(rule);
1353 ofproto->ofproto_class->rule_delete(rule);
1354 ovs_mutex_unlock(&ofproto_mutex);
1358 ofproto_flush__(struct ofproto *ofproto)
1359 OVS_EXCLUDED(ofproto_mutex)
1361 struct oftable *table;
1363 /* This will flush all datapath flows. */
1364 if (ofproto->ofproto_class->flush) {
1365 ofproto->ofproto_class->flush(ofproto);
1368 /* XXX: There is a small race window here, where new datapath flows can be
1369 * created by upcall handlers based on the existing flow table. We can not
1370 * call ofproto class flush while holding 'ofproto_mutex' to prevent this,
1371 * as then we could deadlock on syncing with the handler threads waiting on
1372 * the same mutex. */
1374 ovs_mutex_lock(&ofproto_mutex);
1375 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1376 struct rule_collection rules;
1379 if (table->flags & OFTABLE_HIDDEN) {
1383 rule_collection_init(&rules);
1385 CLS_FOR_EACH (rule, cr, &table->cls) {
1386 rule_collection_add(&rules, rule);
1388 delete_flows__(&rules, OFPRR_DELETE, NULL);
1389 rule_collection_destroy(&rules);
1391 /* XXX: Concurrent handler threads may insert new learned flows based on
1392 * learn actions of the now deleted flows right after we release
1393 * 'ofproto_mutex'. */
1394 ovs_mutex_unlock(&ofproto_mutex);
1397 static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1400 ofproto_destroy__(struct ofproto *ofproto)
1401 OVS_EXCLUDED(ofproto_mutex)
1403 struct oftable *table;
1405 destroy_rule_executes(ofproto);
1406 delete_group(ofproto, OFPG_ALL);
1408 guarded_list_destroy(&ofproto->rule_executes);
1409 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1410 hmap_destroy(&ofproto->groups);
1412 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1413 free(ofproto->name);
1414 free(ofproto->type);
1415 free(ofproto->mfr_desc);
1416 free(ofproto->hw_desc);
1417 free(ofproto->sw_desc);
1418 free(ofproto->serial_desc);
1419 free(ofproto->dp_desc);
1420 hmap_destroy(&ofproto->ports);
1421 hmap_destroy(&ofproto->ofport_usage);
1422 shash_destroy(&ofproto->port_by_name);
1423 simap_destroy(&ofproto->ofp_requests);
1425 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1426 oftable_destroy(table);
1428 free(ofproto->tables);
1430 ovs_assert(hindex_is_empty(&ofproto->cookies));
1431 hindex_destroy(&ofproto->cookies);
1433 ovs_assert(hmap_is_empty(&ofproto->learned_cookies));
1434 hmap_destroy(&ofproto->learned_cookies);
1436 free(ofproto->vlan_bitmap);
1438 ofproto->ofproto_class->dealloc(ofproto);
1442 ofproto_destroy(struct ofproto *p)
1443 OVS_EXCLUDED(ofproto_mutex)
1445 struct ofport *ofport, *next_ofport;
1446 struct ofport_usage *usage, *next_usage;
1453 meter_delete(p, 1, p->meter_features.max_meters);
1454 p->meter_features.max_meters = 0;
1460 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
1461 ofport_destroy(ofport);
1464 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1465 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1469 p->ofproto_class->destruct(p);
1471 /* We should not postpone this because it involves deleting a listening
1472 * socket which we may want to reopen soon. 'connmgr' should not be used
1473 * by other threads */
1474 connmgr_destroy(p->connmgr);
1476 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1477 ovsrcu_postpone(ofproto_destroy__, p);
1480 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1481 * kernel datapath, for example, this destroys the datapath in the kernel, and
1482 * with the netdev-based datapath, it tears down the data structures that
1483 * represent the datapath.
1485 * The datapath should not be currently open as an ofproto. */
1487 ofproto_delete(const char *name, const char *type)
1489 const struct ofproto_class *class = ofproto_class_find__(type);
1490 return (!class ? EAFNOSUPPORT
1491 : !class->del ? EACCES
1492 : class->del(type, name));
1496 process_port_change(struct ofproto *ofproto, int error, char *devname)
1498 if (error == ENOBUFS) {
1499 reinit_ports(ofproto);
1500 } else if (!error) {
1501 update_port(ofproto, devname);
1507 ofproto_type_run(const char *datapath_type)
1509 const struct ofproto_class *class;
1512 datapath_type = ofproto_normalize_type(datapath_type);
1513 class = ofproto_class_find__(datapath_type);
1515 error = class->type_run ? class->type_run(datapath_type) : 0;
1516 if (error && error != EAGAIN) {
1517 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
1518 datapath_type, ovs_strerror(error));
1524 ofproto_type_wait(const char *datapath_type)
1526 const struct ofproto_class *class;
1528 datapath_type = ofproto_normalize_type(datapath_type);
1529 class = ofproto_class_find__(datapath_type);
1531 if (class->type_wait) {
1532 class->type_wait(datapath_type);
1537 ofproto_run(struct ofproto *p)
1542 error = p->ofproto_class->run(p);
1543 if (error && error != EAGAIN) {
1544 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
1547 run_rule_executes(p);
1549 /* Restore the eviction group heap invariant occasionally. */
1550 if (p->eviction_group_timer < time_msec()) {
1553 p->eviction_group_timer = time_msec() + 1000;
1555 for (i = 0; i < p->n_tables; i++) {
1556 struct oftable *table = &p->tables[i];
1557 struct eviction_group *evg;
1560 if (!table->eviction_fields) {
1564 if (classifier_count(&table->cls) > 100000) {
1565 static struct vlog_rate_limit count_rl =
1566 VLOG_RATE_LIMIT_INIT(1, 1);
1567 VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
1568 " number of rules: %d", i,
1569 classifier_count(&table->cls));
1572 ovs_mutex_lock(&ofproto_mutex);
1573 CLS_FOR_EACH (rule, cr, &table->cls) {
1574 if (rule->idle_timeout || rule->hard_timeout) {
1575 if (!rule->eviction_group) {
1576 eviction_group_add_rule(rule);
1578 heap_raw_change(&rule->evg_node,
1579 rule_eviction_priority(p, rule));
1584 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1585 heap_rebuild(&evg->rules);
1587 ovs_mutex_unlock(&ofproto_mutex);
1591 if (p->ofproto_class->port_poll) {
1594 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1595 process_port_change(p, error, devname);
1599 new_seq = seq_read(connectivity_seq_get());
1600 if (new_seq != p->change_seq) {
1601 struct sset devnames;
1602 const char *devname;
1603 struct ofport *ofport;
1605 /* Update OpenFlow port status for any port whose netdev has changed.
1607 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1608 * destroyed, so it's not safe to update ports directly from the
1609 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1610 * need this two-phase approach. */
1611 sset_init(&devnames);
1612 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1613 uint64_t port_change_seq;
1615 port_change_seq = netdev_get_change_seq(ofport->netdev);
1616 if (ofport->change_seq != port_change_seq) {
1617 ofport->change_seq = port_change_seq;
1618 sset_add(&devnames, netdev_get_name(ofport->netdev));
1621 SSET_FOR_EACH (devname, &devnames) {
1622 update_port(p, devname);
1624 sset_destroy(&devnames);
1626 p->change_seq = new_seq;
1629 connmgr_run(p->connmgr, handle_openflow);
1635 ofproto_wait(struct ofproto *p)
1637 p->ofproto_class->wait(p);
1638 if (p->ofproto_class->port_poll_wait) {
1639 p->ofproto_class->port_poll_wait(p);
1641 seq_wait(connectivity_seq_get(), p->change_seq);
1642 connmgr_wait(p->connmgr);
1646 ofproto_is_alive(const struct ofproto *p)
1648 return connmgr_has_controllers(p->connmgr);
1651 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1652 * memory_report(). */
1654 ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1656 const struct oftable *table;
1657 unsigned int n_rules;
1659 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
1662 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1663 n_rules += classifier_count(&table->cls);
1665 simap_increase(usage, "rules", n_rules);
1667 if (ofproto->ofproto_class->get_memory_usage) {
1668 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1671 connmgr_get_memory_usage(ofproto->connmgr, usage);
1675 ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1677 const struct ofproto_class *class;
1679 datapath_type = ofproto_normalize_type(datapath_type);
1680 class = ofproto_class_find__(datapath_type);
1682 if (class && class->type_get_memory_usage) {
1683 class->type_get_memory_usage(datapath_type, usage);
1688 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
1691 connmgr_get_controller_info(ofproto->connmgr, info);
1695 ofproto_free_ofproto_controller_info(struct shash *info)
1697 connmgr_free_controller_info(info);
1700 /* Makes a deep copy of 'old' into 'port'. */
1702 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1704 port->name = xstrdup(old->name);
1705 port->type = xstrdup(old->type);
1706 port->ofp_port = old->ofp_port;
1709 /* Frees memory allocated to members of 'ofproto_port'.
1711 * Do not call this function on an ofproto_port obtained from
1712 * ofproto_port_dump_next(): that function retains ownership of the data in the
1715 ofproto_port_destroy(struct ofproto_port *ofproto_port)
1717 free(ofproto_port->name);
1718 free(ofproto_port->type);
1721 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1723 * This function provides no status indication. An error status for the entire
1724 * dump operation is provided when it is completed by calling
1725 * ofproto_port_dump_done().
1728 ofproto_port_dump_start(struct ofproto_port_dump *dump,
1729 const struct ofproto *ofproto)
1731 dump->ofproto = ofproto;
1732 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1736 /* Attempts to retrieve another port from 'dump', which must have been created
1737 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1738 * 'port' and returns true. On failure, returns false.
1740 * Failure might indicate an actual error or merely that the last port has been
1741 * dumped. An error status for the entire dump operation is provided when it
1742 * is completed by calling ofproto_port_dump_done().
1744 * The ofproto owns the data stored in 'port'. It will remain valid until at
1745 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1746 * ofproto_port_dump_done(). */
1748 ofproto_port_dump_next(struct ofproto_port_dump *dump,
1749 struct ofproto_port *port)
1751 const struct ofproto *ofproto = dump->ofproto;
1757 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1760 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1766 /* Completes port table dump operation 'dump', which must have been created
1767 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1768 * error-free, otherwise a positive errno value describing the problem. */
1770 ofproto_port_dump_done(struct ofproto_port_dump *dump)
1772 const struct ofproto *ofproto = dump->ofproto;
1774 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1777 return dump->error == EOF ? 0 : dump->error;
1780 /* Returns the type to pass to netdev_open() when a datapath of type
1781 * 'datapath_type' has a port of type 'port_type', for a few special
1782 * cases when a netdev type differs from a port type. For example, when
1783 * using the userspace datapath, a port of type "internal" needs to be
1786 * Returns either 'type' itself or a string literal, which must not be
1789 ofproto_port_open_type(const char *datapath_type, const char *port_type)
1791 const struct ofproto_class *class;
1793 datapath_type = ofproto_normalize_type(datapath_type);
1794 class = ofproto_class_find__(datapath_type);
1799 return (class->port_open_type
1800 ? class->port_open_type(datapath_type, port_type)
1804 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1805 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1806 * the port's OpenFlow port number.
1808 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1809 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1810 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1811 * 'ofp_portp' is non-null). */
1813 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
1814 ofp_port_t *ofp_portp)
1816 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
1819 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1821 const char *netdev_name = netdev_get_name(netdev);
1823 simap_put(&ofproto->ofp_requests, netdev_name,
1824 ofp_to_u16(ofp_port));
1825 update_port(ofproto, netdev_name);
1828 *ofp_portp = OFPP_NONE;
1830 struct ofproto_port ofproto_port;
1832 error = ofproto_port_query_by_name(ofproto,
1833 netdev_get_name(netdev),
1836 *ofp_portp = ofproto_port.ofp_port;
1837 ofproto_port_destroy(&ofproto_port);
1844 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1845 * initializes '*port' appropriately; on failure, returns a positive errno
1848 * The caller owns the data in 'ofproto_port' and must free it with
1849 * ofproto_port_destroy() when it is no longer needed. */
1851 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1852 struct ofproto_port *port)
1856 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1858 memset(port, 0, sizeof *port);
1863 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1864 * Returns 0 if successful, otherwise a positive errno. */
1866 ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
1868 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1869 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
1870 struct simap_node *ofp_request_node;
1873 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
1874 if (ofp_request_node) {
1875 simap_delete(&ofproto->ofp_requests, ofp_request_node);
1878 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
1879 if (!error && ofport) {
1880 /* 'name' is the netdev's name and update_port() is going to close the
1881 * netdev. Just in case update_port() refers to 'name' after it
1882 * destroys 'ofport', make a copy of it around the update_port()
1884 char *devname = xstrdup(name);
1885 update_port(ofproto, devname);
1892 flow_mod_init(struct ofputil_flow_mod *fm,
1893 const struct match *match, int priority,
1894 const struct ofpact *ofpacts, size_t ofpacts_len,
1895 enum ofp_flow_mod_command command)
1897 memset(fm, 0, sizeof *fm);
1899 fm->priority = priority;
1902 fm->modify_cookie = false;
1904 fm->command = command;
1905 fm->idle_timeout = 0;
1906 fm->hard_timeout = 0;
1908 fm->buffer_id = UINT32_MAX;
1909 fm->out_port = OFPP_ANY;
1910 fm->out_group = OFPG_ANY;
1912 fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts);
1913 fm->ofpacts_len = ofpacts_len;
1914 fm->delete_reason = OFPRR_DELETE;
1918 simple_flow_mod(struct ofproto *ofproto,
1919 const struct match *match, int priority,
1920 const struct ofpact *ofpacts, size_t ofpacts_len,
1921 enum ofp_flow_mod_command command)
1923 struct ofputil_flow_mod fm;
1925 flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command);
1927 return handle_flow_mod__(ofproto, &fm, NULL);
1930 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1931 * performs the 'n_actions' actions in 'actions'. The new flow will not
1934 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1935 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1936 * controllers; otherwise, it will be hidden.
1938 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1940 * This is a helper function for in-band control and fail-open. */
1942 ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
1944 const struct ofpact *ofpacts, size_t ofpacts_len)
1945 OVS_EXCLUDED(ofproto_mutex)
1947 const struct rule *rule;
1950 /* First do a cheap check whether the rule we're looking for already exists
1951 * with the actions that we want. If it does, then we're done. */
1952 rule = rule_from_cls_rule(classifier_find_match_exactly(
1953 &ofproto->tables[0].cls, match, priority));
1955 const struct rule_actions *actions = rule_get_actions(rule);
1956 must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len,
1957 ofpacts, ofpacts_len);
1962 /* If there's no such rule or the rule doesn't have the actions we want,
1963 * fall back to a executing a full flow mod. We can't optimize this at
1964 * all because we didn't take enough locks above to ensure that the flow
1965 * table didn't already change beneath us. */
1967 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
1968 OFPFC_MODIFY_STRICT);
1972 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1973 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1974 * operation cannot be initiated now but may be retried later.
1976 * This is a helper function for in-band control and fail-open and the "learn"
1979 ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
1980 OVS_EXCLUDED(ofproto_mutex)
1982 /* Optimize for the most common case of a repeated learn action.
1983 * If an identical flow already exists we only need to update its
1984 * 'modified' time. */
1985 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
1986 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
1987 struct oftable *table = &ofproto->tables[fm->table_id];
1991 rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls,
1995 /* Reading many of the rule fields and writing on 'modified'
1996 * requires the rule->mutex. Also, rule->actions may change
1997 * if rule->mutex is not held. */
1998 const struct rule_actions *actions;
2000 ovs_mutex_lock(&rule->mutex);
2001 actions = rule_get_actions(rule);
2002 if (rule->idle_timeout == fm->idle_timeout
2003 && rule->hard_timeout == fm->hard_timeout
2004 && rule->importance == fm->importance
2005 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
2006 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
2007 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
2008 actions->ofpacts, actions->ofpacts_len)) {
2009 /* Rule already exists and need not change, only update the
2010 modified timestamp. */
2011 rule->modified = time_msec();
2014 ovs_mutex_unlock(&rule->mutex);
2022 return handle_flow_mod__(ofproto, fm, NULL);
2025 /* Searches for a rule with matching criteria exactly equal to 'target' in
2026 * ofproto's table 0 and, if it finds one, deletes it.
2028 * This is a helper function for in-band control and fail-open. */
2030 ofproto_delete_flow(struct ofproto *ofproto,
2031 const struct match *target, int priority)
2032 OVS_EXCLUDED(ofproto_mutex)
2034 struct classifier *cls = &ofproto->tables[0].cls;
2037 /* First do a cheap check whether the rule we're looking for has already
2038 * been deleted. If so, then we're done. */
2039 rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
2045 /* Execute a flow mod. We can't optimize this at all because we didn't
2046 * take enough locks above to ensure that the flow table didn't already
2047 * change beneath us. */
2048 simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT);
2051 /* Delete all of the flows from all of ofproto's flow tables, then reintroduce
2052 * the flows required by in-band control and fail-open. */
2054 ofproto_flush_flows(struct ofproto *ofproto)
2056 COVERAGE_INC(ofproto_flush);
2057 ofproto_flush__(ofproto);
2058 connmgr_flushed(ofproto->connmgr);
2062 reinit_ports(struct ofproto *p)
2064 struct ofproto_port_dump dump;
2065 struct sset devnames;
2066 struct ofport *ofport;
2067 struct ofproto_port ofproto_port;
2068 const char *devname;
2070 COVERAGE_INC(ofproto_reinit_ports);
2072 sset_init(&devnames);
2073 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2074 sset_add(&devnames, netdev_get_name(ofport->netdev));
2076 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2077 sset_add(&devnames, ofproto_port.name);
2080 SSET_FOR_EACH (devname, &devnames) {
2081 update_port(p, devname);
2083 sset_destroy(&devnames);
2087 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2091 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2092 port_idx = port_idx ? port_idx : UINT16_MAX;
2094 if (port_idx >= ofproto->max_ports
2095 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2096 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2097 long long int last_used_at, lru = LLONG_MAX;
2099 /* Search for a free OpenFlow port number. We try not to
2100 * immediately reuse them to prevent problems due to old
2103 * We limit the automatically assigned port numbers to the lower half
2104 * of the port range, to reserve the upper half for assignment by
2107 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2108 ofproto->alloc_port_no = 1;
2110 last_used_at = ofport_get_usage(ofproto,
2111 u16_to_ofp(ofproto->alloc_port_no));
2112 if (!last_used_at) {
2113 port_idx = ofproto->alloc_port_no;
2115 } else if ( last_used_at < time_msec() - 60*60*1000) {
2116 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2117 * more than an hour ago, consider it usable. */
2118 ofport_remove_usage(ofproto,
2119 u16_to_ofp(ofproto->alloc_port_no));
2120 port_idx = ofproto->alloc_port_no;
2122 } else if (last_used_at < lru) {
2124 lru_ofport = ofproto->alloc_port_no;
2127 if (ofproto->alloc_port_no == end_port_no) {
2129 port_idx = lru_ofport;
2136 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2137 return u16_to_ofp(port_idx);
2141 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2143 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2144 ofport_set_usage(ofproto, ofp_port, time_msec());
2148 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2149 * pointer if the netdev cannot be opened. On success, also fills in
2151 static struct netdev *
2152 ofport_open(struct ofproto *ofproto,
2153 struct ofproto_port *ofproto_port,
2154 struct ofputil_phy_port *pp)
2156 enum netdev_flags flags;
2157 struct netdev *netdev;
2160 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2162 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2163 "cannot be opened (%s)",
2165 ofproto_port->name, ofproto_port->ofp_port,
2166 ofproto_port->name, ovs_strerror(error));
2170 if (ofproto_port->ofp_port == OFPP_NONE) {
2171 if (!strcmp(ofproto->name, ofproto_port->name)) {
2172 ofproto_port->ofp_port = OFPP_LOCAL;
2174 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2175 ofproto_port->name);
2178 pp->port_no = ofproto_port->ofp_port;
2179 netdev_get_etheraddr(netdev, pp->hw_addr);
2180 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2181 netdev_get_flags(netdev, &flags);
2182 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2183 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2184 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2185 &pp->supported, &pp->peer);
2186 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2187 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2192 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2193 * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are
2196 ofport_equal(const struct ofputil_phy_port *a,
2197 const struct ofputil_phy_port *b)
2199 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2200 && a->state == b->state
2201 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2202 && a->curr == b->curr
2203 && a->advertised == b->advertised
2204 && a->supported == b->supported
2205 && a->peer == b->peer
2206 && a->curr_speed == b->curr_speed
2207 && a->max_speed == b->max_speed);
2210 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2211 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2212 * one with the same name or port number). */
2214 ofport_install(struct ofproto *p,
2215 struct netdev *netdev, const struct ofputil_phy_port *pp)
2217 const char *netdev_name = netdev_get_name(netdev);
2218 struct ofport *ofport;
2221 /* Create ofport. */
2222 ofport = p->ofproto_class->port_alloc();
2227 ofport->ofproto = p;
2228 ofport->netdev = netdev;
2229 ofport->change_seq = netdev_get_change_seq(netdev);
2231 ofport->ofp_port = pp->port_no;
2232 ofport->created = time_msec();
2234 /* Add port to 'p'. */
2235 hmap_insert(&p->ports, &ofport->hmap_node,
2236 hash_ofp_port(ofport->ofp_port));
2237 shash_add(&p->port_by_name, netdev_name, ofport);
2239 update_mtu(p, ofport);
2241 /* Let the ofproto_class initialize its private data. */
2242 error = p->ofproto_class->port_construct(ofport);
2246 connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD);
2250 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2251 p->name, netdev_name, ovs_strerror(error));
2253 ofport_destroy__(ofport);
2255 netdev_close(netdev);
2259 /* Removes 'ofport' from 'p' and destroys it. */
2261 ofport_remove(struct ofport *ofport)
2263 connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp,
2265 ofport_destroy(ofport);
2268 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2271 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2273 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2275 ofport_remove(port);
2279 /* Updates 'port' with new 'pp' description.
2281 * Does not handle a name or port number change. The caller must implement
2282 * such a change as a delete followed by an add. */
2284 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2286 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2287 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2288 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2289 port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN)
2290 | (pp->state & OFPUTIL_PS_LINK_DOWN));
2291 port->pp.curr = pp->curr;
2292 port->pp.advertised = pp->advertised;
2293 port->pp.supported = pp->supported;
2294 port->pp.peer = pp->peer;
2295 port->pp.curr_speed = pp->curr_speed;
2296 port->pp.max_speed = pp->max_speed;
2298 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2299 &port->pp, OFPPR_MODIFY);
2302 /* Update OpenFlow 'state' in 'port' and notify controller. */
2304 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2306 if (port->pp.state != state) {
2307 port->pp.state = state;
2308 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2309 &port->pp, OFPPR_MODIFY);
2314 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2316 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2318 if (port->ofproto->ofproto_class->set_realdev) {
2319 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2321 if (port->ofproto->ofproto_class->set_stp_port) {
2322 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2324 if (port->ofproto->ofproto_class->set_rstp_port) {
2325 port->ofproto->ofproto_class->set_rstp_port(port, NULL);
2327 if (port->ofproto->ofproto_class->set_cfm) {
2328 port->ofproto->ofproto_class->set_cfm(port, NULL);
2330 if (port->ofproto->ofproto_class->bundle_remove) {
2331 port->ofproto->ofproto_class->bundle_remove(port);
2337 ofport_destroy__(struct ofport *port)
2339 struct ofproto *ofproto = port->ofproto;
2340 const char *name = netdev_get_name(port->netdev);
2342 hmap_remove(&ofproto->ports, &port->hmap_node);
2343 shash_delete(&ofproto->port_by_name,
2344 shash_find(&ofproto->port_by_name, name));
2346 netdev_close(port->netdev);
2347 ofproto->ofproto_class->port_dealloc(port);
2351 ofport_destroy(struct ofport *port)
2354 dealloc_ofp_port(port->ofproto, port->ofp_port);
2355 port->ofproto->ofproto_class->port_destruct(port);
2356 ofport_destroy__(port);
2361 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2363 struct ofport *port;
2365 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2367 if (port->ofp_port == ofp_port) {
2374 static long long int
2375 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2377 struct ofport_usage *usage;
2379 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2380 &ofproto->ofport_usage) {
2381 if (usage->ofp_port == ofp_port) {
2382 return usage->last_used;
2389 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2390 long long int last_used)
2392 struct ofport_usage *usage;
2393 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2394 &ofproto->ofport_usage) {
2395 if (usage->ofp_port == ofp_port) {
2396 usage->last_used = last_used;
2400 ovs_assert(last_used == LLONG_MAX);
2402 usage = xmalloc(sizeof *usage);
2403 usage->ofp_port = ofp_port;
2404 usage->last_used = last_used;
2405 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2406 hash_ofp_port(ofp_port));
2410 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2412 struct ofport_usage *usage;
2413 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2414 &ofproto->ofport_usage) {
2415 if (usage->ofp_port == ofp_port) {
2416 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2424 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2426 struct ofproto *ofproto = port->ofproto;
2429 if (ofproto->ofproto_class->port_get_stats) {
2430 error = ofproto->ofproto_class->port_get_stats(port, stats);
2439 update_port(struct ofproto *ofproto, const char *name)
2441 struct ofproto_port ofproto_port;
2442 struct ofputil_phy_port pp;
2443 struct netdev *netdev;
2444 struct ofport *port;
2446 COVERAGE_INC(ofproto_update_port);
2448 /* Fetch 'name''s location and properties from the datapath. */
2449 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2450 ? ofport_open(ofproto, &ofproto_port, &pp)
2454 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2455 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2456 struct netdev *old_netdev = port->netdev;
2458 /* 'name' hasn't changed location. Any properties changed? */
2459 if (!ofport_equal(&port->pp, &pp)) {
2460 ofport_modified(port, &pp);
2463 update_mtu(ofproto, port);
2465 /* Install the newly opened netdev in case it has changed.
2466 * Don't close the old netdev yet in case port_modified has to
2467 * remove a retained reference to it.*/
2468 port->netdev = netdev;
2469 port->change_seq = netdev_get_change_seq(netdev);
2471 if (port->ofproto->ofproto_class->port_modified) {
2472 port->ofproto->ofproto_class->port_modified(port);
2475 netdev_close(old_netdev);
2477 /* If 'port' is nonnull then its name differs from 'name' and thus
2478 * we should delete it. If we think there's a port named 'name'
2479 * then its port number must be wrong now so delete it too. */
2481 ofport_remove(port);
2483 ofport_remove_with_name(ofproto, name);
2484 ofport_install(ofproto, netdev, &pp);
2487 /* Any port named 'name' is gone now. */
2488 ofport_remove_with_name(ofproto, name);
2490 ofproto_port_destroy(&ofproto_port);
2494 init_ports(struct ofproto *p)
2496 struct ofproto_port_dump dump;
2497 struct ofproto_port ofproto_port;
2498 struct shash_node *node, *next;
2500 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2501 const char *name = ofproto_port.name;
2503 if (shash_find(&p->port_by_name, name)) {
2504 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2507 struct ofputil_phy_port pp;
2508 struct netdev *netdev;
2510 /* Check if an OpenFlow port number had been requested. */
2511 node = shash_find(&init_ofp_ports, name);
2513 const struct iface_hint *iface_hint = node->data;
2514 simap_put(&p->ofp_requests, name,
2515 ofp_to_u16(iface_hint->ofp_port));
2518 netdev = ofport_open(p, &ofproto_port, &pp);
2520 ofport_install(p, netdev, &pp);
2521 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2522 p->alloc_port_no = MAX(p->alloc_port_no,
2523 ofp_to_u16(ofproto_port.ofp_port));
2529 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2530 struct iface_hint *iface_hint = node->data;
2532 if (!strcmp(iface_hint->br_name, p->name)) {
2533 free(iface_hint->br_name);
2534 free(iface_hint->br_type);
2536 shash_delete(&init_ofp_ports, node);
2543 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2544 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2546 find_min_mtu(struct ofproto *p)
2548 struct ofport *ofport;
2551 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2552 struct netdev *netdev = ofport->netdev;
2555 /* Skip any internal ports, since that's what we're trying to
2557 if (!strcmp(netdev_get_type(netdev), "internal")) {
2561 if (netdev_get_mtu(netdev, &dev_mtu)) {
2564 if (!mtu || dev_mtu < mtu) {
2569 return mtu ? mtu: ETH_PAYLOAD_MAX;
2572 /* Update MTU of all datapath devices on 'p' to the minimum of the
2573 * non-datapath ports in event of 'port' added or changed. */
2575 update_mtu(struct ofproto *p, struct ofport *port)
2577 struct ofport *ofport;
2578 struct netdev *netdev = port->netdev;
2579 int dev_mtu, old_min;
2581 if (netdev_get_mtu(netdev, &dev_mtu)) {
2585 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2586 if (dev_mtu > p->min_mtu) {
2587 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2588 dev_mtu = p->min_mtu;
2591 port->mtu = dev_mtu;
2595 /* For non-internal port find new min mtu. */
2596 old_min = p->min_mtu;
2597 port->mtu = dev_mtu;
2598 p->min_mtu = find_min_mtu(p);
2599 if (p->min_mtu == old_min) {
2603 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2604 struct netdev *netdev = ofport->netdev;
2606 if (!strcmp(netdev_get_type(netdev), "internal")) {
2607 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2608 ofport->mtu = p->min_mtu;
2615 ofproto_rule_destroy__(struct rule *rule)
2616 OVS_NO_THREAD_SAFETY_ANALYSIS
2618 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2619 rule_actions_destroy(rule_get_actions(rule));
2620 ovs_mutex_destroy(&rule->mutex);
2621 rule->ofproto->ofproto_class->rule_dealloc(rule);
2625 rule_destroy_cb(struct rule *rule)
2627 rule->ofproto->ofproto_class->rule_destruct(rule);
2628 ofproto_rule_destroy__(rule);
2632 ofproto_rule_ref(struct rule *rule)
2635 ovs_refcount_ref(&rule->ref_count);
2640 ofproto_rule_try_ref(struct rule *rule)
2643 return ovs_refcount_try_ref_rcu(&rule->ref_count);
2648 /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
2649 * ref_count reaches 0.
2651 * Use of RCU allows short term use (between RCU quiescent periods) without
2652 * keeping a reference. A reference must be taken if the rule needs to
2653 * stay around accross the RCU quiescent periods. */
2655 ofproto_rule_unref(struct rule *rule)
2657 if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) {
2658 ovsrcu_postpone(rule_destroy_cb, rule);
2663 ofproto_group_ref(struct ofgroup *group)
2666 ovs_refcount_ref(&group->ref_count);
2671 ofproto_group_unref(struct ofgroup *group)
2673 if (group && ovs_refcount_unref(&group->ref_count) == 1) {
2674 group->ofproto->ofproto_class->group_destruct(group);
2675 ofputil_bucket_list_destroy(&group->buckets);
2676 group->ofproto->ofproto_class->group_dealloc(group);
2680 static uint32_t get_provider_meter_id(const struct ofproto *,
2681 uint32_t of_meter_id);
2683 /* Creates and returns a new 'struct rule_actions', whose actions are a copy
2684 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2685 const struct rule_actions *
2686 rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len)
2688 struct rule_actions *actions;
2690 actions = xmalloc(sizeof *actions + ofpacts_len);
2691 actions->ofpacts_len = ofpacts_len;
2692 actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0;
2693 memcpy(actions->ofpacts, ofpacts, ofpacts_len);
2695 actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL)
2701 /* Free the actions after the RCU quiescent period is reached. */
2703 rule_actions_destroy(const struct rule_actions *actions)
2706 ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions));
2710 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2711 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2713 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2714 OVS_REQUIRES(ofproto_mutex)
2716 if (port == OFPP_ANY) {
2719 const struct rule_actions *actions = rule_get_actions(rule);
2720 return ofpacts_output_to_port(actions->ofpacts,
2721 actions->ofpacts_len, port);
2725 /* Returns true if 'rule' has group and equals group_id. */
2727 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2728 OVS_REQUIRES(ofproto_mutex)
2730 if (group_id == OFPG_ANY) {
2733 const struct rule_actions *actions = rule_get_actions(rule);
2734 return ofpacts_output_to_group(actions->ofpacts,
2735 actions->ofpacts_len, group_id);
2740 rule_execute_destroy(struct rule_execute *e)
2742 ofproto_rule_unref(e->rule);
2743 list_remove(&e->list_node);
2747 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2748 * by passing them to the ofproto provider. */
2750 run_rule_executes(struct ofproto *ofproto)
2751 OVS_EXCLUDED(ofproto_mutex)
2753 struct rule_execute *e, *next;
2754 struct ovs_list executes;
2756 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2757 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2760 flow_extract(e->packet, NULL, &flow);
2761 flow.in_port.ofp_port = e->in_port;
2762 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2764 rule_execute_destroy(e);
2768 /* Destroys and discards all "rule_execute" operations queued up in
2769 * ofproto->rule_executes. */
2771 destroy_rule_executes(struct ofproto *ofproto)
2773 struct rule_execute *e, *next;
2774 struct ovs_list executes;
2776 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2777 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2778 ofpbuf_delete(e->packet);
2779 rule_execute_destroy(e);
2784 rule_is_readonly(const struct rule *rule)
2786 const struct oftable *table = &rule->ofproto->tables[rule->table_id];
2787 return (table->flags & OFTABLE_READONLY) != 0;
2791 hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id)
2793 uint64_t cookie = (OVS_FORCE uint64_t) cookie_;
2794 return hash_3words(cookie, cookie >> 32, table_id);
2798 learned_cookies_update_one__(struct ofproto *ofproto,
2799 const struct ofpact_learn *learn,
2800 int delta, struct ovs_list *dead_cookies)
2801 OVS_REQUIRES(ofproto_mutex)
2803 uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id);
2804 struct learned_cookie *c;
2806 HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) {
2807 if (c->cookie == learn->cookie && c->table_id == learn->table_id) {
2809 ovs_assert(c->n >= 0);
2812 hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node);
2813 list_push_back(dead_cookies, &c->u.list_node);
2820 ovs_assert(delta > 0);
2821 c = xmalloc(sizeof *c);
2822 hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash);
2823 c->cookie = learn->cookie;
2824 c->table_id = learn->table_id;
2828 static const struct ofpact_learn *
2829 next_learn_with_delete(const struct rule_actions *actions,
2830 const struct ofpact_learn *start)
2832 const struct ofpact *pos;
2834 for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts;
2835 pos < ofpact_end(actions->ofpacts, actions->ofpacts_len);
2836 pos = ofpact_next(pos)) {
2837 if (pos->type == OFPACT_LEARN) {
2838 const struct ofpact_learn *learn = ofpact_get_LEARN(pos);
2839 if (learn->flags & NX_LEARN_F_DELETE_LEARNED) {
2849 learned_cookies_update__(struct ofproto *ofproto,
2850 const struct rule_actions *actions,
2851 int delta, struct ovs_list *dead_cookies)
2852 OVS_REQUIRES(ofproto_mutex)
2854 if (actions->has_learn_with_delete) {
2855 const struct ofpact_learn *learn;
2857 for (learn = next_learn_with_delete(actions, NULL); learn;
2858 learn = next_learn_with_delete(actions, learn)) {
2859 learned_cookies_update_one__(ofproto, learn, delta, dead_cookies);
2865 learned_cookies_inc(struct ofproto *ofproto,
2866 const struct rule_actions *actions)
2867 OVS_REQUIRES(ofproto_mutex)
2869 learned_cookies_update__(ofproto, actions, +1, NULL);
2873 learned_cookies_dec(struct ofproto *ofproto,
2874 const struct rule_actions *actions,
2875 struct ovs_list *dead_cookies)
2876 OVS_REQUIRES(ofproto_mutex)
2878 learned_cookies_update__(ofproto, actions, -1, dead_cookies);
2882 learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies)
2883 OVS_REQUIRES(ofproto_mutex)
2885 struct learned_cookie *c, *next;
2887 LIST_FOR_EACH_SAFE (c, next, u.list_node, dead_cookies) {
2888 struct rule_criteria criteria;
2889 struct rule_collection rules;
2892 match_init_catchall(&match);
2893 rule_criteria_init(&criteria, c->table_id, &match, 0,
2894 c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY);
2895 rule_criteria_require_rw(&criteria, false);
2896 collect_rules_loose(ofproto, &criteria, &rules);
2897 delete_flows__(&rules, OFPRR_DELETE, NULL);
2898 rule_criteria_destroy(&criteria);
2899 rule_collection_destroy(&rules);
2901 list_remove(&c->u.list_node);
2907 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
2909 ofconn_send_reply(ofconn, make_echo_reply(oh));
2914 query_tables(struct ofproto *ofproto,
2915 struct ofputil_table_features **featuresp,
2916 struct ofputil_table_stats **statsp)
2918 struct mf_bitmap rw_fields = oxm_writable_fields();
2919 struct mf_bitmap match = oxm_matchable_fields();
2920 struct mf_bitmap mask = oxm_maskable_fields();
2922 struct ofputil_table_features *features;
2923 struct ofputil_table_stats *stats;
2926 features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
2927 for (i = 0; i < ofproto->n_tables; i++) {
2928 struct ofputil_table_features *f = &features[i];
2931 sprintf(f->name, "table%d", i);
2932 f->metadata_match = OVS_BE64_MAX;
2933 f->metadata_write = OVS_BE64_MAX;
2934 atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
2935 f->max_entries = 1000000;
2937 bool more_tables = false;
2938 for (int j = i + 1; j < ofproto->n_tables; j++) {
2939 if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) {
2940 bitmap_set1(f->nonmiss.next, j);
2944 f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
2946 f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
2948 f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
2949 f->nonmiss.write.set_fields = rw_fields;
2950 f->nonmiss.apply = f->nonmiss.write;
2951 f->miss = f->nonmiss;
2955 f->wildcard = match;
2959 stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
2960 for (i = 0; i < ofproto->n_tables; i++) {
2961 struct ofputil_table_stats *s = &stats[i];
2962 struct classifier *cls = &ofproto->tables[i].cls;
2965 s->active_count = classifier_count(cls);
2971 ofproto->ofproto_class->query_tables(ofproto, features, stats);
2973 for (i = 0; i < ofproto->n_tables; i++) {
2974 const struct oftable *table = &ofproto->tables[i];
2975 struct ofputil_table_features *f = &features[i];
2978 ovs_strzcpy(f->name, table->name, sizeof f->name);
2981 if (table->max_flows < f->max_entries) {
2982 f->max_entries = table->max_flows;
2988 query_switch_features(struct ofproto *ofproto,
2989 bool *arp_match_ip, uint64_t *ofpacts)
2991 struct ofputil_table_features *features, *f;
2993 *arp_match_ip = false;
2996 query_tables(ofproto, &features, NULL);
2997 for (f = features; f < &features[ofproto->n_tables]; f++) {
2998 *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
2999 if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
3000 bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
3001 *arp_match_ip = true;
3007 ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
3011 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
3013 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3014 struct ofputil_switch_features features;
3015 struct ofport *port;
3019 query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
3021 features.datapath_id = ofproto->datapath_id;
3022 features.n_buffers = pktbuf_capacity();
3023 features.n_tables = ofproto_get_n_visible_tables(ofproto);
3024 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
3025 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS |
3026 OFPUTIL_C_GROUP_STATS);
3028 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
3030 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
3031 features.auxiliary_id = 0;
3032 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
3034 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3035 ofputil_put_switch_features_port(&port->pp, b);
3038 ofconn_send_reply(ofconn, b);
3043 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
3045 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3046 struct ofp_switch_config *osc;
3047 enum ofp_config_flags flags;
3051 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
3052 osc = ofpbuf_put_uninit(buf, sizeof *osc);
3053 flags = ofproto->frag_handling;
3054 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3055 if (oh->version < OFP13_VERSION
3056 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
3057 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
3059 osc->flags = htons(flags);
3060 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
3061 ofconn_send_reply(ofconn, buf);
3067 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
3069 const struct ofp_switch_config *osc = ofpmsg_body(oh);
3070 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3071 uint16_t flags = ntohs(osc->flags);
3073 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
3074 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
3075 enum ofp_config_flags cur = ofproto->frag_handling;
3076 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
3078 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
3080 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
3081 ofproto->frag_handling = next;
3083 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
3085 ofputil_frag_handling_to_string(next));
3089 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3090 ofconn_set_invalid_ttl_to_controller(ofconn,
3091 (oh->version < OFP13_VERSION
3092 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
3094 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
3099 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3100 * error message code for the caller to propagate upward. Otherwise, returns
3103 * The log message mentions 'msg_type'. */
3105 reject_slave_controller(struct ofconn *ofconn)
3107 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
3108 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
3109 return OFPERR_OFPBRC_EPERM;
3115 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
3118 * - If they use a meter, then 'ofproto' has that meter configured.
3120 * - If they use any groups, then 'ofproto' has that group configured.
3122 * Returns 0 if successful, otherwise an OpenFlow error. */
3124 ofproto_check_ofpacts(struct ofproto *ofproto,
3125 const struct ofpact ofpacts[], size_t ofpacts_len)
3127 const struct ofpact *a;
3130 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
3131 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
3132 return OFPERR_OFPMMFC_INVALID_METER;
3135 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
3136 if (a->type == OFPACT_GROUP
3137 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
3138 return OFPERR_OFPBAC_BAD_OUT_GROUP;
3146 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
3148 struct ofproto *p = ofconn_get_ofproto(ofconn);
3149 struct ofputil_packet_out po;
3150 struct ofpbuf *payload;
3151 uint64_t ofpacts_stub[1024 / 8];
3152 struct ofpbuf ofpacts;
3156 COVERAGE_INC(ofproto_packet_out);
3158 error = reject_slave_controller(ofconn);
3163 /* Decode message. */
3164 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
3165 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
3167 goto exit_free_ofpacts;
3169 if (ofp_to_u16(po.in_port) >= p->max_ports
3170 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
3171 error = OFPERR_OFPBRC_BAD_PORT;
3172 goto exit_free_ofpacts;
3176 if (po.buffer_id != UINT32_MAX) {
3177 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
3178 if (error || !payload) {
3179 goto exit_free_ofpacts;
3182 /* Ensure that the L3 header is 32-bit aligned. */
3183 payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2);
3186 /* Verify actions against packet, then send packet if successful. */
3187 flow_extract(payload, NULL, &flow);
3188 flow.in_port.ofp_port = po.in_port;
3189 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
3191 error = p->ofproto_class->packet_out(p, payload, &flow,
3192 po.ofpacts, po.ofpacts_len);
3194 ofpbuf_delete(payload);
3197 ofpbuf_uninit(&ofpacts);
3203 update_port_config(struct ofconn *ofconn, struct ofport *port,
3204 enum ofputil_port_config config,
3205 enum ofputil_port_config mask)
3207 enum ofputil_port_config toggle = (config ^ port->pp.config) & mask;
3209 if (toggle & OFPUTIL_PC_PORT_DOWN
3210 && (config & OFPUTIL_PC_PORT_DOWN
3211 ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL)
3212 : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) {
3213 /* We tried to bring the port up or down, but it failed, so don't
3214 * update the "down" bit. */
3215 toggle &= ~OFPUTIL_PC_PORT_DOWN;
3219 enum ofputil_port_config old_config = port->pp.config;
3220 port->pp.config ^= toggle;
3221 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
3222 connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp,
3228 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
3230 struct ofproto *p = ofconn_get_ofproto(ofconn);
3231 struct ofputil_port_mod pm;
3232 struct ofport *port;
3235 error = reject_slave_controller(ofconn);
3240 error = ofputil_decode_port_mod(oh, &pm, false);
3245 port = ofproto_get_port(p, pm.port_no);
3247 return OFPERR_OFPPMFC_BAD_PORT;
3248 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
3249 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3251 update_port_config(ofconn, port, pm.config, pm.mask);
3253 netdev_set_advertisements(port->netdev, pm.advertise);
3260 handle_desc_stats_request(struct ofconn *ofconn,
3261 const struct ofp_header *request)
3263 static const char *default_mfr_desc = "Nicira, Inc.";
3264 static const char *default_hw_desc = "Open vSwitch";
3265 static const char *default_sw_desc = VERSION;
3266 static const char *default_serial_desc = "None";
3267 static const char *default_dp_desc = "None";
3269 struct ofproto *p = ofconn_get_ofproto(ofconn);
3270 struct ofp_desc_stats *ods;
3273 msg = ofpraw_alloc_stats_reply(request, 0);
3274 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3275 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3276 sizeof ods->mfr_desc);
3277 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3278 sizeof ods->hw_desc);
3279 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3280 sizeof ods->sw_desc);
3281 ovs_strlcpy(ods->serial_num,
3282 p->serial_desc ? p->serial_desc : default_serial_desc,
3283 sizeof ods->serial_num);
3284 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3285 sizeof ods->dp_desc);
3286 ofconn_send_reply(ofconn, msg);
3292 handle_table_stats_request(struct ofconn *ofconn,
3293 const struct ofp_header *request)
3295 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3296 struct ofputil_table_features *features;
3297 struct ofputil_table_stats *stats;
3298 struct ofpbuf *reply;
3301 query_tables(ofproto, &features, &stats);
3303 reply = ofputil_encode_table_stats_reply(request);
3304 for (i = 0; i < ofproto->n_tables; i++) {
3305 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3306 ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
3309 ofconn_send_reply(ofconn, reply);
3318 handle_table_features_request(struct ofconn *ofconn,
3319 const struct ofp_header *request)
3321 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3322 struct ofputil_table_features *features;
3323 struct ovs_list replies;
3327 ofpbuf_use_const(&msg, request, ntohs(request->length));
3328 ofpraw_pull_assert(&msg);
3329 if (ofpbuf_size(&msg) || ofpmp_more(request)) {
3330 return OFPERR_OFPTFFC_EPERM;
3333 query_tables(ofproto, &features, NULL);
3335 ofpmp_init(&replies, request);
3336 for (i = 0; i < ofproto->n_tables; i++) {
3337 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3338 ofputil_append_table_features_reply(&features[i], &replies);
3341 ofconn_send_replies(ofconn, &replies);
3349 append_port_stat(struct ofport *port, struct ovs_list *replies)
3351 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3353 calc_duration(port->created, time_msec(),
3354 &ops.duration_sec, &ops.duration_nsec);
3356 /* Intentionally ignore return value, since errors will set
3357 * 'stats' to all-1s, which is correct for OpenFlow, and
3358 * netdev_get_stats() will log errors. */
3359 ofproto_port_get_stats(port, &ops.stats);
3361 ofputil_append_port_stat(replies, &ops);
3365 handle_port_request(struct ofconn *ofconn,
3366 const struct ofp_header *request, ofp_port_t port_no,
3367 void (*cb)(struct ofport *, struct ovs_list *replies))
3369 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3370 struct ofport *port;
3371 struct ovs_list replies;
3373 ofpmp_init(&replies, request);
3374 if (port_no != OFPP_ANY) {
3375 port = ofproto_get_port(ofproto, port_no);
3380 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3385 ofconn_send_replies(ofconn, &replies);
3389 handle_port_stats_request(struct ofconn *ofconn,
3390 const struct ofp_header *request)
3395 error = ofputil_decode_port_stats_request(request, &port_no);
3397 handle_port_request(ofconn, request, port_no, append_port_stat);
3403 append_port_desc(struct ofport *port, struct ovs_list *replies)
3405 ofputil_append_port_desc_stats_reply(&port->pp, replies);
3409 handle_port_desc_stats_request(struct ofconn *ofconn,
3410 const struct ofp_header *request)
3415 error = ofputil_decode_port_desc_stats_request(request, &port_no);
3417 handle_port_request(ofconn, request, port_no, append_port_desc);
3423 hash_cookie(ovs_be64 cookie)
3425 return hash_uint64((OVS_FORCE uint64_t)cookie);
3429 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3430 OVS_REQUIRES(ofproto_mutex)
3432 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3433 hash_cookie(rule->flow_cookie));
3437 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3438 OVS_REQUIRES(ofproto_mutex)
3440 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3444 calc_duration(long long int start, long long int now,
3445 uint32_t *sec, uint32_t *nsec)
3447 long long int msecs = now - start;
3448 *sec = msecs / 1000;
3449 *nsec = (msecs % 1000) * (1000 * 1000);
3452 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3453 * true if 'table_id' is OK, false otherwise. */
3455 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3457 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
3460 static struct oftable *
3461 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3463 struct oftable *table;
3465 for (table = &ofproto->tables[table_id];
3466 table < &ofproto->tables[ofproto->n_tables];
3468 if (!(table->flags & OFTABLE_HIDDEN)) {
3476 static struct oftable *
3477 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3479 if (table_id == 0xff) {
3480 return next_visible_table(ofproto, 0);
3481 } else if (table_id < ofproto->n_tables) {
3482 return &ofproto->tables[table_id];
3488 static struct oftable *
3489 next_matching_table(const struct ofproto *ofproto,
3490 const struct oftable *table, uint8_t table_id)
3492 return (table_id == 0xff
3493 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3497 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3499 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3500 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3502 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3503 * only once, for that table. (This can be used to access tables marked
3506 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3507 * entered at all. (Perhaps you should have validated TABLE_ID with
3508 * check_table_id().)
3510 * All parameters are evaluated multiple times.
3512 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3513 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3515 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3517 /* Initializes 'criteria' in a straightforward way based on the other
3520 * By default, the criteria include flows that are read-only, on the assumption
3521 * that the collected flows won't be modified. Call rule_criteria_require_rw()
3522 * if flows will be modified.
3524 * For "loose" matching, the 'priority' parameter is unimportant and may be
3527 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3528 const struct match *match, int priority,
3529 ovs_be64 cookie, ovs_be64 cookie_mask,
3530 ofp_port_t out_port, uint32_t out_group)
3532 criteria->table_id = table_id;
3533 cls_rule_init(&criteria->cr, match, priority);
3534 criteria->cookie = cookie;
3535 criteria->cookie_mask = cookie_mask;
3536 criteria->out_port = out_port;
3537 criteria->out_group = out_group;
3539 /* We ordinarily want to skip hidden rules, but there has to be a way for
3540 * code internal to OVS to modify and delete them, so if the criteria
3541 * specify a priority that can only be for a hidden flow, then allow hidden
3542 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3543 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3545 criteria->include_hidden = priority > UINT16_MAX;
3547 /* We assume that the criteria are being used to collect flows for reading
3548 * but not modification. Thus, we should collect read-only flows. */
3549 criteria->include_readonly = true;
3552 /* By default, criteria initialized by rule_criteria_init() will match flows
3553 * that are read-only, on the assumption that the collected flows won't be
3554 * modified. Call this function to match only flows that are be modifiable.
3556 * Specify 'can_write_readonly' as false in ordinary circumstances, true if the
3557 * caller has special privileges that allow it to modify even "read-only"
3560 rule_criteria_require_rw(struct rule_criteria *criteria,
3561 bool can_write_readonly)
3563 criteria->include_readonly = can_write_readonly;
3567 rule_criteria_destroy(struct rule_criteria *criteria)
3569 cls_rule_destroy(&criteria->cr);
3573 rule_collection_init(struct rule_collection *rules)
3575 rules->rules = rules->stub;
3577 rules->capacity = ARRAY_SIZE(rules->stub);
3581 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3583 if (rules->n >= rules->capacity) {
3584 size_t old_size, new_size;
3586 old_size = rules->capacity * sizeof *rules->rules;
3587 rules->capacity *= 2;
3588 new_size = rules->capacity * sizeof *rules->rules;
3590 if (rules->rules == rules->stub) {
3591 rules->rules = xmalloc(new_size);
3592 memcpy(rules->rules, rules->stub, old_size);
3594 rules->rules = xrealloc(rules->rules, new_size);
3598 rules->rules[rules->n++] = rule;
3602 rule_collection_ref(struct rule_collection *rules)
3603 OVS_REQUIRES(ofproto_mutex)
3607 for (i = 0; i < rules->n; i++) {
3608 ofproto_rule_ref(rules->rules[i]);
3613 rule_collection_unref(struct rule_collection *rules)
3617 for (i = 0; i < rules->n; i++) {
3618 ofproto_rule_unref(rules->rules[i]);
3623 rule_collection_destroy(struct rule_collection *rules)
3625 if (rules->rules != rules->stub) {
3629 /* Make repeated destruction harmless. */
3630 rule_collection_init(rules);
3633 /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This
3634 * function verifies most of the criteria in 'c' itself, but the caller must
3635 * check 'c->cr' itself.
3637 * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and
3638 * 'c' only includes modifiable rules). */
3640 collect_rule(struct rule *rule, const struct rule_criteria *c,
3641 struct rule_collection *rules, size_t *n_readonly)
3642 OVS_REQUIRES(ofproto_mutex)
3644 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3645 && ofproto_rule_has_out_port(rule, c->out_port)
3646 && ofproto_rule_has_out_group(rule, c->out_group)
3647 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)
3648 && (!rule_is_hidden(rule) || c->include_hidden)) {
3649 /* Rule matches all the criteria... */
3650 if (!rule_is_readonly(rule) || c->include_readonly) {
3652 rule_collection_add(rules, rule);
3654 /* ...except it's read-only. */
3660 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3661 * on classifiers rules are done in the "loose" way required for OpenFlow
3662 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3665 * Returns 0 on success, otherwise an OpenFlow error code. */
3667 collect_rules_loose(struct ofproto *ofproto,
3668 const struct rule_criteria *criteria,
3669 struct rule_collection *rules)
3670 OVS_REQUIRES(ofproto_mutex)
3672 struct oftable *table;
3673 enum ofperr error = 0;
3674 size_t n_readonly = 0;
3676 rule_collection_init(rules);
3678 if (!check_table_id(ofproto, criteria->table_id)) {
3679 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3683 if (criteria->cookie_mask == OVS_BE64_MAX) {
3686 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3687 hash_cookie(criteria->cookie),
3688 &ofproto->cookies) {
3689 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
3690 collect_rule(rule, criteria, rules, &n_readonly);
3694 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3697 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) {
3698 collect_rule(rule, criteria, rules, &n_readonly);
3704 if (!error && !rules->n && n_readonly) {
3705 /* We didn't find any rules to modify. We did find some read-only
3706 * rules that we're not allowed to modify, so report that. */
3707 error = OFPERR_OFPBRC_EPERM;
3710 rule_collection_destroy(rules);
3715 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3716 * on classifiers rules are done in the "strict" way required for OpenFlow
3717 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3718 * rules on list 'rules'.
3720 * Returns 0 on success, otherwise an OpenFlow error code. */
3722 collect_rules_strict(struct ofproto *ofproto,
3723 const struct rule_criteria *criteria,
3724 struct rule_collection *rules)
3725 OVS_REQUIRES(ofproto_mutex)
3727 struct oftable *table;
3728 size_t n_readonly = 0;
3731 rule_collection_init(rules);
3733 if (!check_table_id(ofproto, criteria->table_id)) {
3734 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3738 if (criteria->cookie_mask == OVS_BE64_MAX) {
3741 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3742 hash_cookie(criteria->cookie),
3743 &ofproto->cookies) {
3744 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
3745 collect_rule(rule, criteria, rules, &n_readonly);
3749 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3752 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3753 &table->cls, &criteria->cr));
3755 collect_rule(rule, criteria, rules, &n_readonly);
3761 if (!error && !rules->n && n_readonly) {
3762 /* We didn't find any rules to modify. We did find some read-only
3763 * rules that we're not allowed to modify, so report that. */
3764 error = OFPERR_OFPBRC_EPERM;
3767 rule_collection_destroy(rules);
3772 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3773 * forced into the range of a uint16_t. */
3775 age_secs(long long int age_ms)
3777 return (age_ms < 0 ? 0
3778 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
3779 : (unsigned int) age_ms / 1000);
3783 handle_flow_stats_request(struct ofconn *ofconn,
3784 const struct ofp_header *request)
3785 OVS_EXCLUDED(ofproto_mutex)
3787 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3788 struct ofputil_flow_stats_request fsr;
3789 struct rule_criteria criteria;
3790 struct rule_collection rules;
3791 struct ovs_list replies;
3795 error = ofputil_decode_flow_stats_request(&fsr, request);
3800 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
3801 fsr.cookie_mask, fsr.out_port, fsr.out_group);
3803 ovs_mutex_lock(&ofproto_mutex);
3804 error = collect_rules_loose(ofproto, &criteria, &rules);
3805 rule_criteria_destroy(&criteria);
3807 rule_collection_ref(&rules);
3809 ovs_mutex_unlock(&ofproto_mutex);
3815 ofpmp_init(&replies, request);
3816 for (i = 0; i < rules.n; i++) {
3817 struct rule *rule = rules.rules[i];
3818 long long int now = time_msec();
3819 struct ofputil_flow_stats fs;
3820 long long int created, used, modified;
3821 const struct rule_actions *actions;
3822 enum ofputil_flow_mod_flags flags;
3824 ovs_mutex_lock(&rule->mutex);
3825 fs.cookie = rule->flow_cookie;
3826 fs.idle_timeout = rule->idle_timeout;
3827 fs.hard_timeout = rule->hard_timeout;
3828 fs.importance = rule->importance;
3829 created = rule->created;
3830 modified = rule->modified;
3831 actions = rule_get_actions(rule);
3832 flags = rule->flags;
3833 ovs_mutex_unlock(&rule->mutex);
3835 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
3836 &fs.byte_count, &used);
3838 minimatch_expand(&rule->cr.match, &fs.match);
3839 fs.table_id = rule->table_id;
3840 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
3841 fs.priority = rule->cr.priority;
3842 fs.idle_age = age_secs(now - used);
3843 fs.hard_age = age_secs(now - modified);
3844 fs.ofpacts = actions->ofpacts;
3845 fs.ofpacts_len = actions->ofpacts_len;
3848 ofputil_append_flow_stats_reply(&fs, &replies);
3851 rule_collection_unref(&rules);
3852 rule_collection_destroy(&rules);
3854 ofconn_send_replies(ofconn, &replies);
3860 flow_stats_ds(struct rule *rule, struct ds *results)
3862 uint64_t packet_count, byte_count;
3863 const struct rule_actions *actions;
3864 long long int created, used;
3866 rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
3867 &byte_count, &used);
3869 ovs_mutex_lock(&rule->mutex);
3870 actions = rule_get_actions(rule);
3871 created = rule->created;
3872 ovs_mutex_unlock(&rule->mutex);
3874 if (rule->table_id != 0) {
3875 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
3877 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
3878 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
3879 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
3880 cls_rule_format(&rule->cr, results);
3881 ds_put_char(results, ',');
3883 ds_put_cstr(results, "actions=");
3884 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
3886 ds_put_cstr(results, "\n");
3889 /* Adds a pretty-printed description of all flows to 'results', including
3890 * hidden flows (e.g., set up by in-band control). */
3892 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
3894 struct oftable *table;
3896 OFPROTO_FOR_EACH_TABLE (table, p) {
3899 CLS_FOR_EACH (rule, cr, &table->cls) {
3900 flow_stats_ds(rule, results);
3905 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3906 * '*engine_type' and '*engine_id', respectively. */
3908 ofproto_get_netflow_ids(const struct ofproto *ofproto,
3909 uint8_t *engine_type, uint8_t *engine_id)
3911 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
3914 /* Checks the status change of CFM on 'ofport'.
3916 * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */
3918 ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
3920 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
3921 return (ofport && ofproto->ofproto_class->cfm_status_changed
3922 ? ofproto->ofproto_class->cfm_status_changed(ofport)
3926 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
3927 * Returns 0 if the port's CFM status was successfully stored into
3928 * '*status'. Returns positive errno if the port did not have CFM
3931 * The caller must provide and own '*status', and must free 'status->rmps'.
3932 * '*status' is indeterminate if the return value is non-zero. */
3934 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
3935 struct cfm_status *status)
3937 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
3938 return (ofport && ofproto->ofproto_class->get_cfm_status
3939 ? ofproto->ofproto_class->get_cfm_status(ofport, status)
3944 handle_aggregate_stats_request(struct ofconn *ofconn,
3945 const struct ofp_header *oh)
3946 OVS_EXCLUDED(ofproto_mutex)
3948 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3949 struct ofputil_flow_stats_request request;
3950 struct ofputil_aggregate_stats stats;
3951 bool unknown_packets, unknown_bytes;
3952 struct rule_criteria criteria;
3953 struct rule_collection rules;
3954 struct ofpbuf *reply;
3958 error = ofputil_decode_flow_stats_request(&request, oh);
3963 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
3964 request.cookie, request.cookie_mask,
3965 request.out_port, request.out_group);
3967 ovs_mutex_lock(&ofproto_mutex);
3968 error = collect_rules_loose(ofproto, &criteria, &rules);
3969 rule_criteria_destroy(&criteria);
3971 rule_collection_ref(&rules);
3973 ovs_mutex_unlock(&ofproto_mutex);
3979 memset(&stats, 0, sizeof stats);
3980 unknown_packets = unknown_bytes = false;
3981 for (i = 0; i < rules.n; i++) {
3982 struct rule *rule = rules.rules[i];
3983 uint64_t packet_count;
3984 uint64_t byte_count;
3987 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
3988 &byte_count, &used);
3990 if (packet_count == UINT64_MAX) {
3991 unknown_packets = true;
3993 stats.packet_count += packet_count;
3996 if (byte_count == UINT64_MAX) {
3997 unknown_bytes = true;
3999 stats.byte_count += byte_count;
4004 if (unknown_packets) {
4005 stats.packet_count = UINT64_MAX;
4007 if (unknown_bytes) {
4008 stats.byte_count = UINT64_MAX;
4011 rule_collection_unref(&rules);
4012 rule_collection_destroy(&rules);
4014 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
4015 ofconn_send_reply(ofconn, reply);
4020 struct queue_stats_cbdata {
4021 struct ofport *ofport;
4022 struct ovs_list replies;
4027 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
4028 const struct netdev_queue_stats *stats)
4030 struct ofputil_queue_stats oqs;
4032 oqs.port_no = cbdata->ofport->pp.port_no;
4033 oqs.queue_id = queue_id;
4034 oqs.tx_bytes = stats->tx_bytes;
4035 oqs.tx_packets = stats->tx_packets;
4036 oqs.tx_errors = stats->tx_errors;
4037 if (stats->created != LLONG_MIN) {
4038 calc_duration(stats->created, cbdata->now,
4039 &oqs.duration_sec, &oqs.duration_nsec);
4041 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
4043 ofputil_append_queue_stat(&cbdata->replies, &oqs);
4047 handle_queue_stats_dump_cb(uint32_t queue_id,
4048 struct netdev_queue_stats *stats,
4051 struct queue_stats_cbdata *cbdata = cbdata_;
4053 put_queue_stats(cbdata, queue_id, stats);
4057 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
4058 struct queue_stats_cbdata *cbdata)
4060 cbdata->ofport = port;
4061 if (queue_id == OFPQ_ALL) {
4062 netdev_dump_queue_stats(port->netdev,
4063 handle_queue_stats_dump_cb, cbdata);
4065 struct netdev_queue_stats stats;
4067 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
4068 put_queue_stats(cbdata, queue_id, &stats);
4070 return OFPERR_OFPQOFC_BAD_QUEUE;
4077 handle_queue_stats_request(struct ofconn *ofconn,
4078 const struct ofp_header *rq)
4080 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4081 struct queue_stats_cbdata cbdata;
4082 struct ofport *port;
4084 struct ofputil_queue_stats_request oqsr;
4086 COVERAGE_INC(ofproto_queue_req);
4088 ofpmp_init(&cbdata.replies, rq);
4089 cbdata.now = time_msec();
4091 error = ofputil_decode_queue_stats_request(rq, &oqsr);
4096 if (oqsr.port_no == OFPP_ANY) {
4097 error = OFPERR_OFPQOFC_BAD_QUEUE;
4098 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
4099 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
4104 port = ofproto_get_port(ofproto, oqsr.port_no);
4106 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
4107 : OFPERR_OFPQOFC_BAD_PORT);
4110 ofconn_send_replies(ofconn, &cbdata.replies);
4112 ofpbuf_list_delete(&cbdata.replies);
4119 evict_rules_from_table(struct oftable *table, unsigned int extra_space)
4120 OVS_REQUIRES(ofproto_mutex)
4122 enum ofperr error = 0;
4123 struct rule_collection rules;
4124 unsigned int count = classifier_count(&table->cls) + extra_space;
4125 unsigned int max_flows = table->max_flows;
4127 rule_collection_init(&rules);
4129 while (count-- > max_flows) {
4132 if (!choose_rule_to_evict(table, &rule)) {
4133 error = OFPERR_OFPFMFC_TABLE_FULL;
4136 eviction_group_remove_rule(rule);
4137 rule_collection_add(&rules, rule);
4140 delete_flows__(&rules, OFPRR_EVICTION, NULL);
4141 rule_collection_destroy(&rules);
4146 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
4147 * in which no matching flow already exists in the flow table.
4149 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
4150 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
4151 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
4152 * initiated now but may be retried later.
4154 * The caller retains ownership of 'fm->ofpacts'.
4156 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
4159 add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4160 const struct flow_mod_requester *req)
4161 OVS_REQUIRES(ofproto_mutex)
4163 const struct rule_actions *actions;
4164 struct oftable *table;
4170 if (!check_table_id(ofproto, fm->table_id)) {
4171 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4176 if (fm->table_id == 0xff) {
4177 if (ofproto->ofproto_class->rule_choose_table) {
4178 error = ofproto->ofproto_class->rule_choose_table(ofproto,
4184 ovs_assert(table_id < ofproto->n_tables);
4188 } else if (fm->table_id < ofproto->n_tables) {
4189 table_id = fm->table_id;
4191 return OFPERR_OFPBRC_BAD_TABLE_ID;
4194 table = &ofproto->tables[table_id];
4195 if (table->flags & OFTABLE_READONLY
4196 && !(fm->flags & OFPUTIL_FF_NO_READONLY)) {
4197 return OFPERR_OFPBRC_EPERM;
4200 if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) {
4201 if (!match_has_default_hidden_fields(&fm->match)) {
4202 VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set "
4203 "non-default values to hidden fields", ofproto->name);
4204 return OFPERR_OFPBRC_EPERM;
4208 cls_rule_init(&cr, &fm->match, fm->priority);
4210 /* Transform "add" into "modify" if there's an existing identical flow. */
4211 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
4213 struct rule_collection rules;
4215 cls_rule_destroy(&cr);
4217 rule_collection_init(&rules);
4218 rule_collection_add(&rules, rule);
4219 fm->modify_cookie = true;
4220 error = modify_flows__(ofproto, fm, &rules, req);
4221 rule_collection_destroy(&rules);
4226 /* Check for overlap, if requested. */
4227 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
4228 if (classifier_rule_overlaps(&table->cls, &cr)) {
4229 cls_rule_destroy(&cr);
4230 return OFPERR_OFPFMFC_OVERLAP;
4234 /* If necessary, evict an existing rule to clear out space. */
4235 error = evict_rules_from_table(table, 1);
4237 cls_rule_destroy(&cr);
4241 /* Allocate new rule. */
4242 rule = ofproto->ofproto_class->rule_alloc();
4244 cls_rule_destroy(&cr);
4245 VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
4246 ofproto->name, ovs_strerror(error));
4250 /* Initialize base state. */
4251 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
4252 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr);
4253 ovs_refcount_init(&rule->ref_count);
4254 rule->flow_cookie = fm->new_cookie;
4255 rule->created = rule->modified = time_msec();
4257 ovs_mutex_init(&rule->mutex);
4258 ovs_mutex_lock(&rule->mutex);
4259 rule->idle_timeout = fm->idle_timeout;
4260 rule->hard_timeout = fm->hard_timeout;
4261 rule->importance = fm->importance;
4262 ovs_mutex_unlock(&rule->mutex);
4264 *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables;
4265 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4266 actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len);
4267 ovsrcu_set(&rule->actions, actions);
4268 list_init(&rule->meter_list_node);
4269 rule->eviction_group = NULL;
4270 list_init(&rule->expirable);
4271 rule->monitor_flags = 0;
4272 rule->add_seqno = 0;
4273 rule->modify_seqno = 0;
4275 /* Construct rule, initializing derived state. */
4276 error = ofproto->ofproto_class->rule_construct(rule);
4278 ofproto_rule_destroy__(rule);
4282 if (fm->hard_timeout || fm->idle_timeout) {
4283 list_insert(&ofproto->expirable, &rule->expirable);
4285 cookies_insert(ofproto, rule);
4286 eviction_group_add_rule(rule);
4287 if (actions->has_meter) {
4288 meter_insert_rule(rule);
4291 classifier_defer(&table->cls);
4292 classifier_insert(&table->cls, &rule->cr);
4294 error = ofproto->ofproto_class->rule_insert(rule);
4296 oftable_remove_rule(rule);
4297 ofproto_rule_unref(rule);
4300 classifier_publish(&table->cls);
4302 learned_cookies_inc(ofproto, actions);
4304 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
4305 if (ofproto->vlan_bitmap) {
4306 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
4307 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
4308 bitmap_set1(ofproto->vlan_bitmap, vid);
4309 ofproto->vlans_changed = true;
4312 ofproto->vlans_changed = true;
4316 ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0,
4317 req ? req->ofconn : NULL, req ? req->xid : 0, NULL);
4319 return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0;
4322 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4324 /* Modifies the rules listed in 'rules', changing their actions to match those
4327 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4330 * Returns 0 on success, otherwise an OpenFlow error code. */
4332 modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4333 const struct rule_collection *rules,
4334 const struct flow_mod_requester *req)
4335 OVS_REQUIRES(ofproto_mutex)
4337 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4338 enum nx_flow_update_event event;
4341 if (ofproto->ofproto_class->rule_premodify_actions) {
4342 for (i = 0; i < rules->n; i++) {
4343 struct rule *rule = rules->rules[i];
4346 error = ofproto->ofproto_class->rule_premodify_actions(
4347 rule, fm->ofpacts, fm->ofpacts_len);
4354 event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED;
4355 for (i = 0; i < rules->n; i++) {
4356 struct rule *rule = rules->rules[i];
4358 /* 'fm' says that */
4359 bool change_cookie = (fm->modify_cookie
4360 && fm->new_cookie != OVS_BE64_MAX
4361 && fm->new_cookie != rule->flow_cookie);
4363 const struct rule_actions *actions = rule_get_actions(rule);
4364 bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
4366 actions->ofpacts_len);
4368 bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
4370 long long int now = time_msec();
4372 if (change_cookie) {
4373 cookies_remove(ofproto, rule);
4376 ovs_mutex_lock(&rule->mutex);
4377 if (fm->command == OFPFC_ADD) {
4378 rule->idle_timeout = fm->idle_timeout;
4379 rule->hard_timeout = fm->hard_timeout;
4380 rule->importance = fm->importance;
4381 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4382 rule->created = now;
4384 if (change_cookie) {
4385 rule->flow_cookie = fm->new_cookie;
4387 rule->modified = now;
4388 ovs_mutex_unlock(&rule->mutex);
4390 if (change_cookie) {
4391 cookies_insert(ofproto, rule);
4393 if (fm->command == OFPFC_ADD) {
4394 if (fm->idle_timeout || fm->hard_timeout || fm->importance) {
4395 if (!rule->eviction_group) {
4396 eviction_group_add_rule(rule);
4399 eviction_group_remove_rule(rule);
4403 if (change_actions) {
4404 ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts,
4408 if (change_actions || reset_counters) {
4409 ofproto->ofproto_class->rule_modify_actions(rule, reset_counters);
4412 if (event != NXFME_MODIFIED || change_actions || change_cookie) {
4413 ofmonitor_report(ofproto->connmgr, rule, event, 0,
4414 req ? req->ofconn : NULL, req ? req->xid : 0,
4415 change_actions ? actions : NULL);
4418 if (change_actions) {
4419 learned_cookies_inc(ofproto, rule_get_actions(rule));
4420 learned_cookies_dec(ofproto, actions, &dead_cookies);
4421 rule_actions_destroy(actions);
4424 learned_cookies_flush(ofproto, &dead_cookies);
4426 if (fm->buffer_id != UINT32_MAX && req) {
4427 return send_buffered_packet(req->ofconn, fm->buffer_id,
4435 modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4436 const struct flow_mod_requester *req)
4437 OVS_REQUIRES(ofproto_mutex)
4439 if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) {
4442 return add_flow(ofproto, fm, req);
4445 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4448 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4451 modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4452 const struct flow_mod_requester *req)
4453 OVS_REQUIRES(ofproto_mutex)
4455 struct rule_criteria criteria;
4456 struct rule_collection rules;
4459 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4460 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4461 rule_criteria_require_rw(&criteria,
4462 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4463 error = collect_rules_loose(ofproto, &criteria, &rules);
4464 rule_criteria_destroy(&criteria);
4467 error = (rules.n > 0
4468 ? modify_flows__(ofproto, fm, &rules, req)
4469 : modify_flows_add(ofproto, fm, req));
4472 rule_collection_destroy(&rules);
4477 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4478 * code on failure. */
4480 modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4481 const struct flow_mod_requester *req)
4482 OVS_REQUIRES(ofproto_mutex)
4484 struct rule_criteria criteria;
4485 struct rule_collection rules;
4488 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4489 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4490 rule_criteria_require_rw(&criteria,
4491 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4492 error = collect_rules_strict(ofproto, &criteria, &rules);
4493 rule_criteria_destroy(&criteria);
4497 error = modify_flows_add(ofproto, fm, req);
4498 } else if (rules.n == 1) {
4499 error = modify_flows__(ofproto, fm, &rules, req);
4503 rule_collection_destroy(&rules);
4508 /* OFPFC_DELETE implementation. */
4510 /* Deletes the rules listed in 'rules'. */
4512 delete_flows__(const struct rule_collection *rules,
4513 enum ofp_flow_removed_reason reason,
4514 const struct flow_mod_requester *req)
4515 OVS_REQUIRES(ofproto_mutex)
4518 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4519 struct ofproto *ofproto = rules->rules[0]->ofproto;
4520 struct rule *rule, *next;
4523 for (i = 0, next = rules->rules[0];
4524 rule = next, next = (++i < rules->n) ? rules->rules[i] : NULL,
4526 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
4527 uint8_t next_table = next ? next->table_id : UINT8_MAX;
4529 ofproto_rule_send_removed(rule, reason);
4531 ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
4532 req ? req->ofconn : NULL, req ? req->xid : 0,
4535 if (next_table == rule->table_id) {
4536 classifier_defer(cls);
4538 classifier_remove(cls, &rule->cr);
4539 if (next_table != rule->table_id) {
4540 classifier_publish(cls);
4542 ofproto_rule_remove__(ofproto, rule);
4544 ofproto->ofproto_class->rule_delete(rule);
4546 learned_cookies_dec(ofproto, rule_get_actions(rule),
4549 learned_cookies_flush(ofproto, &dead_cookies);
4550 ofmonitor_flush(ofproto->connmgr);
4554 /* Implements OFPFC_DELETE. */
4556 delete_flows_loose(struct ofproto *ofproto,
4557 const struct ofputil_flow_mod *fm,
4558 const struct flow_mod_requester *req)
4559 OVS_REQUIRES(ofproto_mutex)
4561 struct rule_criteria criteria;
4562 struct rule_collection rules;
4565 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4566 fm->cookie, fm->cookie_mask,
4567 fm->out_port, fm->out_group);
4568 rule_criteria_require_rw(&criteria,
4569 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4570 error = collect_rules_loose(ofproto, &criteria, &rules);
4571 rule_criteria_destroy(&criteria);
4574 delete_flows__(&rules, fm->delete_reason, req);
4576 rule_collection_destroy(&rules);
4581 /* Implements OFPFC_DELETE_STRICT. */
4583 delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm,
4584 const struct flow_mod_requester *req)
4585 OVS_REQUIRES(ofproto_mutex)
4587 struct rule_criteria criteria;
4588 struct rule_collection rules;
4591 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4592 fm->cookie, fm->cookie_mask,
4593 fm->out_port, fm->out_group);
4594 rule_criteria_require_rw(&criteria,
4595 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4596 error = collect_rules_strict(ofproto, &criteria, &rules);
4597 rule_criteria_destroy(&criteria);
4600 delete_flows__(&rules, fm->delete_reason, req);
4602 rule_collection_destroy(&rules);
4608 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
4609 OVS_REQUIRES(ofproto_mutex)
4611 struct ofputil_flow_removed fr;
4614 if (rule_is_hidden(rule) ||
4615 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
4619 minimatch_expand(&rule->cr.match, &fr.match);
4620 fr.priority = rule->cr.priority;
4621 fr.cookie = rule->flow_cookie;
4623 fr.table_id = rule->table_id;
4624 calc_duration(rule->created, time_msec(),
4625 &fr.duration_sec, &fr.duration_nsec);
4626 ovs_mutex_lock(&rule->mutex);
4627 fr.idle_timeout = rule->idle_timeout;
4628 fr.hard_timeout = rule->hard_timeout;
4629 ovs_mutex_unlock(&rule->mutex);
4630 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
4631 &fr.byte_count, &used);
4633 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
4636 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4637 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4640 * ofproto implementation ->run() functions should use this function to expire
4641 * OpenFlow flows. */
4643 ofproto_rule_expire(struct rule *rule, uint8_t reason)
4644 OVS_REQUIRES(ofproto_mutex)
4646 struct rule_collection rules;
4648 rules.rules = rules.stub;
4650 rules.stub[0] = rule;
4651 delete_flows__(&rules, reason, NULL);
4654 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4655 * means "infinite". */
4657 reduce_timeout(uint16_t max, uint16_t *timeout)
4659 if (max && (!*timeout || *timeout > max)) {
4664 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
4665 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
4666 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
4668 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
4670 ofproto_rule_reduce_timeouts(struct rule *rule,
4671 uint16_t idle_timeout, uint16_t hard_timeout)
4672 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
4674 if (!idle_timeout && !hard_timeout) {
4678 ovs_mutex_lock(&ofproto_mutex);
4679 if (list_is_empty(&rule->expirable)) {
4680 list_insert(&rule->ofproto->expirable, &rule->expirable);
4682 ovs_mutex_unlock(&ofproto_mutex);
4684 ovs_mutex_lock(&rule->mutex);
4685 reduce_timeout(idle_timeout, &rule->idle_timeout);
4686 reduce_timeout(hard_timeout, &rule->hard_timeout);
4687 ovs_mutex_unlock(&rule->mutex);
4691 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
4692 OVS_EXCLUDED(ofproto_mutex)
4694 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4695 struct ofputil_flow_mod fm;
4696 uint64_t ofpacts_stub[1024 / 8];
4697 struct ofpbuf ofpacts;
4700 error = reject_slave_controller(ofconn);
4705 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
4706 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
4708 u16_to_ofp(ofproto->max_ports),
4711 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
4714 struct flow_mod_requester req;
4716 req.ofconn = ofconn;
4718 error = handle_flow_mod__(ofproto, &fm, &req);
4721 goto exit_free_ofpacts;
4724 ofconn_report_flow_mod(ofconn, fm.command);
4727 ofpbuf_uninit(&ofpacts);
4733 handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4734 const struct flow_mod_requester *req)
4735 OVS_EXCLUDED(ofproto_mutex)
4739 ovs_mutex_lock(&ofproto_mutex);
4740 switch (fm->command) {
4742 error = add_flow(ofproto, fm, req);
4746 error = modify_flows_loose(ofproto, fm, req);
4749 case OFPFC_MODIFY_STRICT:
4750 error = modify_flow_strict(ofproto, fm, req);
4754 error = delete_flows_loose(ofproto, fm, req);
4757 case OFPFC_DELETE_STRICT:
4758 error = delete_flow_strict(ofproto, fm, req);
4762 if (fm->command > 0xff) {
4763 VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but "
4764 "flow_mod_table_id extension is not enabled",
4767 error = OFPERR_OFPFMFC_BAD_COMMAND;
4770 ofmonitor_flush(ofproto->connmgr);
4771 ovs_mutex_unlock(&ofproto_mutex);
4773 run_rule_executes(ofproto);
4778 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
4780 struct ofputil_role_request request;
4781 struct ofputil_role_request reply;
4785 error = ofputil_decode_role_message(oh, &request);
4790 if (request.role != OFPCR12_ROLE_NOCHANGE) {
4791 if (request.have_generation_id
4792 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
4793 return OFPERR_OFPRRFC_STALE;
4796 ofconn_set_role(ofconn, request.role);
4799 reply.role = ofconn_get_role(ofconn);
4800 reply.have_generation_id = ofconn_get_master_election_id(
4801 ofconn, &reply.generation_id);
4802 buf = ofputil_encode_role_reply(oh, &reply);
4803 ofconn_send_reply(ofconn, buf);
4809 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
4810 const struct ofp_header *oh)
4812 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
4813 enum ofputil_protocol cur, next;
4815 cur = ofconn_get_protocol(ofconn);
4816 next = ofputil_protocol_set_tid(cur, msg->set != 0);
4817 ofconn_set_protocol(ofconn, next);
4823 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
4825 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
4826 enum ofputil_protocol cur, next;
4827 enum ofputil_protocol next_base;
4829 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
4831 return OFPERR_OFPBRC_EPERM;
4834 cur = ofconn_get_protocol(ofconn);
4835 next = ofputil_protocol_set_base(cur, next_base);
4836 ofconn_set_protocol(ofconn, next);
4842 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
4843 const struct ofp_header *oh)
4845 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
4848 format = ntohl(msg->format);
4849 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
4850 return OFPERR_OFPBRC_EPERM;
4853 ofconn_set_packet_in_format(ofconn, format);
4858 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
4860 const struct nx_async_config *msg = ofpmsg_body(oh);
4861 uint32_t master[OAM_N_TYPES];
4862 uint32_t slave[OAM_N_TYPES];
4864 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
4865 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
4866 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
4868 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
4869 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
4870 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
4872 ofconn_set_async_config(ofconn, master, slave);
4873 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
4874 !ofconn_get_miss_send_len(ofconn)) {
4875 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
4882 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
4885 uint32_t master[OAM_N_TYPES];
4886 uint32_t slave[OAM_N_TYPES];
4887 struct nx_async_config *msg;
4889 ofconn_get_async_config(ofconn, master, slave);
4890 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
4891 msg = ofpbuf_put_zeros(buf, sizeof *msg);
4893 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
4894 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
4895 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
4897 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
4898 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
4899 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
4901 ofconn_send_reply(ofconn, buf);
4907 handle_nxt_set_controller_id(struct ofconn *ofconn,
4908 const struct ofp_header *oh)
4910 const struct nx_controller_id *nci = ofpmsg_body(oh);
4912 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
4913 return OFPERR_NXBRC_MUST_BE_ZERO;
4916 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
4921 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
4925 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
4926 ? OFPRAW_OFPT10_BARRIER_REPLY
4927 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
4928 ofconn_send_reply(ofconn, buf);
4933 ofproto_compose_flow_refresh_update(const struct rule *rule,
4934 enum nx_flow_monitor_flags flags,
4935 struct ovs_list *msgs)
4936 OVS_REQUIRES(ofproto_mutex)
4938 const struct rule_actions *actions;
4939 struct ofputil_flow_update fu;
4942 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
4943 ? NXFME_ADDED : NXFME_MODIFIED);
4945 ovs_mutex_lock(&rule->mutex);
4946 fu.idle_timeout = rule->idle_timeout;
4947 fu.hard_timeout = rule->hard_timeout;
4948 ovs_mutex_unlock(&rule->mutex);
4949 fu.table_id = rule->table_id;
4950 fu.cookie = rule->flow_cookie;
4951 minimatch_expand(&rule->cr.match, &match);
4953 fu.priority = rule->cr.priority;
4955 actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL;
4956 fu.ofpacts = actions ? actions->ofpacts : NULL;
4957 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
4959 if (list_is_empty(msgs)) {
4960 ofputil_start_flow_update(msgs);
4962 ofputil_append_flow_update(&fu, msgs);
4966 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
4967 struct ovs_list *msgs)
4968 OVS_REQUIRES(ofproto_mutex)
4972 for (i = 0; i < rules->n; i++) {
4973 struct rule *rule = rules->rules[i];
4974 enum nx_flow_monitor_flags flags = rule->monitor_flags;
4975 rule->monitor_flags = 0;
4977 ofproto_compose_flow_refresh_update(rule, flags, msgs);
4982 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
4983 struct rule *rule, uint64_t seqno,
4984 struct rule_collection *rules)
4985 OVS_REQUIRES(ofproto_mutex)
4987 enum nx_flow_monitor_flags update;
4989 if (rule_is_hidden(rule)) {
4993 if (!ofproto_rule_has_out_port(rule, m->out_port)) {
4998 if (rule->add_seqno > seqno) {
4999 update = NXFMF_ADD | NXFMF_MODIFY;
5000 } else if (rule->modify_seqno > seqno) {
5001 update = NXFMF_MODIFY;
5006 if (!(m->flags & update)) {
5010 update = NXFMF_INITIAL;
5013 if (!rule->monitor_flags) {
5014 rule_collection_add(rules, rule);
5016 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
5020 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
5022 struct rule_collection *rules)
5023 OVS_REQUIRES(ofproto_mutex)
5025 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
5026 const struct oftable *table;
5027 struct cls_rule target;
5029 cls_rule_init_from_minimatch(&target, &m->match, 0);
5030 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
5033 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) {
5034 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
5037 cls_rule_destroy(&target);
5041 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
5042 struct rule_collection *rules)
5043 OVS_REQUIRES(ofproto_mutex)
5045 if (m->flags & NXFMF_INITIAL) {
5046 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
5051 ofmonitor_collect_resume_rules(struct ofmonitor *m,
5052 uint64_t seqno, struct rule_collection *rules)
5053 OVS_REQUIRES(ofproto_mutex)
5055 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
5059 flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
5060 OVS_REQUIRES(ofproto_mutex)
5062 struct ofmonitor *m;
5065 m = ofmonitor_lookup(ofconn, id);
5067 ofmonitor_destroy(m);
5070 error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
5077 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
5078 OVS_EXCLUDED(ofproto_mutex)
5080 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5081 struct ofmonitor **monitors;
5082 size_t n_monitors, allocated_monitors;
5083 struct rule_collection rules;
5084 struct ovs_list replies;
5089 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5091 n_monitors = allocated_monitors = 0;
5093 ovs_mutex_lock(&ofproto_mutex);
5095 struct ofputil_flow_monitor_request request;
5096 struct ofmonitor *m;
5099 retval = ofputil_decode_flow_monitor_request(&request, &b);
5100 if (retval == EOF) {
5102 } else if (retval) {
5107 if (request.table_id != 0xff
5108 && request.table_id >= ofproto->n_tables) {
5109 error = OFPERR_OFPBRC_BAD_TABLE_ID;
5113 error = ofmonitor_create(&request, ofconn, &m);
5118 if (n_monitors >= allocated_monitors) {
5119 monitors = x2nrealloc(monitors, &allocated_monitors,
5122 monitors[n_monitors++] = m;
5125 rule_collection_init(&rules);
5126 for (i = 0; i < n_monitors; i++) {
5127 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
5130 ofpmp_init(&replies, oh);
5131 ofmonitor_compose_refresh_updates(&rules, &replies);
5132 ovs_mutex_unlock(&ofproto_mutex);
5134 rule_collection_destroy(&rules);
5136 ofconn_send_replies(ofconn, &replies);
5142 for (i = 0; i < n_monitors; i++) {
5143 ofmonitor_destroy(monitors[i]);
5146 ovs_mutex_unlock(&ofproto_mutex);
5152 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
5153 OVS_EXCLUDED(ofproto_mutex)
5158 id = ofputil_decode_flow_monitor_cancel(oh);
5160 ovs_mutex_lock(&ofproto_mutex);
5161 error = flow_monitor_delete(ofconn, id);
5162 ovs_mutex_unlock(&ofproto_mutex);
5167 /* Meters implementation.
5169 * Meter table entry, indexed by the OpenFlow meter_id.
5170 * 'created' is used to compute the duration for meter stats.
5171 * 'list rules' is needed so that we can delete the dependent rules when the
5172 * meter table entry is deleted.
5173 * 'provider_meter_id' is for the provider's private use.
5176 long long int created; /* Time created. */
5177 struct ovs_list rules; /* List of "struct rule_dpif"s. */
5178 ofproto_meter_id provider_meter_id;
5179 uint16_t flags; /* Meter flags. */
5180 uint16_t n_bands; /* Number of meter bands. */
5181 struct ofputil_meter_band *bands;
5185 * This is used in instruction validation at flow set-up time,
5186 * as flows may not use non-existing meters.
5187 * Return value of UINT32_MAX signifies an invalid meter.
5190 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
5192 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5193 const struct meter *meter = ofproto->meters[of_meter_id];
5195 return meter->provider_meter_id.uint32;
5201 /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's
5204 meter_insert_rule(struct rule *rule)
5206 const struct rule_actions *a = rule_get_actions(rule);
5207 uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len);
5208 struct meter *meter = rule->ofproto->meters[meter_id];
5210 list_insert(&meter->rules, &rule->meter_list_node);
5214 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5218 meter->flags = config->flags;
5219 meter->n_bands = config->n_bands;
5220 meter->bands = xmemdup(config->bands,
5221 config->n_bands * sizeof *meter->bands);
5224 static struct meter *
5225 meter_create(const struct ofputil_meter_config *config,
5226 ofproto_meter_id provider_meter_id)
5228 struct meter *meter;
5230 meter = xzalloc(sizeof *meter);
5231 meter->provider_meter_id = provider_meter_id;
5232 meter->created = time_msec();
5233 list_init(&meter->rules);
5235 meter_update(meter, config);
5241 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5242 OVS_REQUIRES(ofproto_mutex)
5245 for (mid = first; mid <= last; ++mid) {
5246 struct meter *meter = ofproto->meters[mid];
5248 ofproto->meters[mid] = NULL;
5249 ofproto->ofproto_class->meter_del(ofproto,
5250 meter->provider_meter_id);
5258 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5260 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5261 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5265 return OFPERR_OFPMMFC_METER_EXISTS;
5268 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5271 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5272 *meterp = meter_create(&mm->meter, provider_meter_id);
5278 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5280 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5282 uint32_t provider_meter_id;
5285 return OFPERR_OFPMMFC_UNKNOWN_METER;
5288 provider_meter_id = meter->provider_meter_id.uint32;
5289 error = ofproto->ofproto_class->meter_set(ofproto,
5290 &meter->provider_meter_id,
5292 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5294 meter_update(meter, &mm->meter);
5300 handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm)
5301 OVS_EXCLUDED(ofproto_mutex)
5303 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5304 uint32_t meter_id = mm->meter.meter_id;
5305 struct rule_collection rules;
5306 enum ofperr error = 0;
5307 uint32_t first, last;
5309 if (meter_id == OFPM13_ALL) {
5311 last = ofproto->meter_features.max_meters;
5313 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5316 first = last = meter_id;
5319 /* First delete the rules that use this meter. If any of those rules are
5320 * currently being modified, postpone the whole operation until later. */
5321 rule_collection_init(&rules);
5322 ovs_mutex_lock(&ofproto_mutex);
5323 for (meter_id = first; meter_id <= last; ++meter_id) {
5324 struct meter *meter = ofproto->meters[meter_id];
5325 if (meter && !list_is_empty(&meter->rules)) {
5328 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5329 rule_collection_add(&rules, rule);
5333 delete_flows__(&rules, OFPRR_METER_DELETE, NULL);
5335 /* Delete the meters. */
5336 meter_delete(ofproto, first, last);
5338 ovs_mutex_unlock(&ofproto_mutex);
5339 rule_collection_destroy(&rules);
5345 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5347 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5348 struct ofputil_meter_mod mm;
5349 uint64_t bands_stub[256 / 8];
5350 struct ofpbuf bands;
5354 error = reject_slave_controller(ofconn);
5359 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5361 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5363 goto exit_free_bands;
5366 meter_id = mm.meter.meter_id;
5368 if (mm.command != OFPMC13_DELETE) {
5369 /* Fails also when meters are not implemented by the provider. */
5370 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5371 error = OFPERR_OFPMMFC_INVALID_METER;
5372 goto exit_free_bands;
5373 } else if (meter_id > ofproto->meter_features.max_meters) {
5374 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5375 goto exit_free_bands;
5377 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5378 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5379 goto exit_free_bands;
5383 switch (mm.command) {
5385 error = handle_add_meter(ofproto, &mm);
5388 case OFPMC13_MODIFY:
5389 error = handle_modify_meter(ofproto, &mm);
5392 case OFPMC13_DELETE:
5393 error = handle_delete_meter(ofconn, &mm);
5397 error = OFPERR_OFPMMFC_BAD_COMMAND;
5402 ofpbuf_uninit(&bands);
5407 handle_meter_features_request(struct ofconn *ofconn,
5408 const struct ofp_header *request)
5410 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5411 struct ofputil_meter_features features;
5414 if (ofproto->ofproto_class->meter_get_features) {
5415 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5417 memset(&features, 0, sizeof features);
5419 b = ofputil_encode_meter_features_reply(&features, request);
5421 ofconn_send_reply(ofconn, b);
5426 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5429 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5430 struct ovs_list replies;
5431 uint64_t bands_stub[256 / 8];
5432 struct ofpbuf bands;
5433 uint32_t meter_id, first, last;
5435 ofputil_decode_meter_request(request, &meter_id);
5437 if (meter_id == OFPM13_ALL) {
5439 last = ofproto->meter_features.max_meters;
5441 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5442 !ofproto->meters[meter_id]) {
5443 return OFPERR_OFPMMFC_UNKNOWN_METER;
5445 first = last = meter_id;
5448 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5449 ofpmp_init(&replies, request);
5451 for (meter_id = first; meter_id <= last; ++meter_id) {
5452 struct meter *meter = ofproto->meters[meter_id];
5454 continue; /* Skip non-existing meters. */
5456 if (type == OFPTYPE_METER_STATS_REQUEST) {
5457 struct ofputil_meter_stats stats;
5459 stats.meter_id = meter_id;
5461 /* Provider sets the packet and byte counts, we do the rest. */
5462 stats.flow_count = list_size(&meter->rules);
5463 calc_duration(meter->created, time_msec(),
5464 &stats.duration_sec, &stats.duration_nsec);
5465 stats.n_bands = meter->n_bands;
5466 ofpbuf_clear(&bands);
5468 = ofpbuf_put_uninit(&bands,
5469 meter->n_bands * sizeof *stats.bands);
5471 if (!ofproto->ofproto_class->meter_get(ofproto,
5472 meter->provider_meter_id,
5474 ofputil_append_meter_stats(&replies, &stats);
5476 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5477 struct ofputil_meter_config config;
5479 config.meter_id = meter_id;
5480 config.flags = meter->flags;
5481 config.n_bands = meter->n_bands;
5482 config.bands = meter->bands;
5483 ofputil_append_meter_config(&replies, &config);
5487 ofconn_send_replies(ofconn, &replies);
5488 ofpbuf_uninit(&bands);
5493 ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id,
5494 struct ofgroup **group)
5495 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5497 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5498 hash_int(group_id, 0), &ofproto->groups) {
5499 if ((*group)->group_id == group_id) {
5507 /* If the group exists, this function increments the groups's reference count.
5509 * Make sure to call ofproto_group_unref() after no longer needing to maintain
5510 * a reference to the group. */
5512 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5513 struct ofgroup **group)
5517 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5518 found = ofproto_group_lookup__(ofproto, group_id, group);
5520 ofproto_group_ref(*group);
5522 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5527 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
5528 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5530 struct ofgroup *grp;
5532 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5533 hash_int(group_id, 0), &ofproto->groups) {
5534 if (grp->group_id == group_id) {
5542 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5543 OVS_EXCLUDED(ofproto->groups_rwlock)
5547 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5548 exists = ofproto_group_exists__(ofproto, group_id);
5549 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5555 group_get_ref_count(struct ofgroup *group)
5556 OVS_EXCLUDED(ofproto_mutex)
5558 struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto);
5559 struct rule_criteria criteria;
5560 struct rule_collection rules;
5565 match_init_catchall(&match);
5566 rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0),
5567 OFPP_ANY, group->group_id);
5568 ovs_mutex_lock(&ofproto_mutex);
5569 error = collect_rules_loose(ofproto, &criteria, &rules);
5570 ovs_mutex_unlock(&ofproto_mutex);
5571 rule_criteria_destroy(&criteria);
5573 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
5575 rule_collection_destroy(&rules);
5580 append_group_stats(struct ofgroup *group, struct ovs_list *replies)
5582 struct ofputil_group_stats ogs;
5583 const struct ofproto *ofproto = group->ofproto;
5584 long long int now = time_msec();
5587 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
5589 /* Provider sets the packet and byte counts, we do the rest. */
5590 ogs.ref_count = group_get_ref_count(group);
5591 ogs.n_buckets = group->n_buckets;
5593 error = (ofproto->ofproto_class->group_get_stats
5594 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
5597 ogs.packet_count = UINT64_MAX;
5598 ogs.byte_count = UINT64_MAX;
5599 memset(ogs.bucket_stats, 0xff,
5600 ogs.n_buckets * sizeof *ogs.bucket_stats);
5603 ogs.group_id = group->group_id;
5604 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
5606 ofputil_append_group_stats(replies, &ogs);
5608 free(ogs.bucket_stats);
5612 handle_group_request(struct ofconn *ofconn,
5613 const struct ofp_header *request, uint32_t group_id,
5614 void (*cb)(struct ofgroup *, struct ovs_list *replies))
5616 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5617 struct ofgroup *group;
5618 struct ovs_list replies;
5620 ofpmp_init(&replies, request);
5621 if (group_id == OFPG_ALL) {
5622 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5623 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5624 cb(group, &replies);
5626 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5628 if (ofproto_group_lookup(ofproto, group_id, &group)) {
5629 cb(group, &replies);
5630 ofproto_group_unref(group);
5633 ofconn_send_replies(ofconn, &replies);
5637 handle_group_stats_request(struct ofconn *ofconn,
5638 const struct ofp_header *request)
5643 error = ofputil_decode_group_stats_request(request, &group_id);
5648 handle_group_request(ofconn, request, group_id, append_group_stats);
5653 append_group_desc(struct ofgroup *group, struct ovs_list *replies)
5655 struct ofputil_group_desc gds;
5657 gds.group_id = group->group_id;
5658 gds.type = group->type;
5659 ofputil_append_group_desc_reply(&gds, &group->buckets, replies);
5663 handle_group_desc_stats_request(struct ofconn *ofconn,
5664 const struct ofp_header *request)
5666 handle_group_request(ofconn, request,
5667 ofputil_decode_group_desc_request(request),
5673 handle_group_features_stats_request(struct ofconn *ofconn,
5674 const struct ofp_header *request)
5676 struct ofproto *p = ofconn_get_ofproto(ofconn);
5679 msg = ofputil_encode_group_features_reply(&p->ogf, request);
5681 ofconn_send_reply(ofconn, msg);
5688 handle_queue_get_config_request(struct ofconn *ofconn,
5689 const struct ofp_header *oh)
5691 struct ofproto *p = ofconn_get_ofproto(ofconn);
5692 struct netdev_queue_dump queue_dump;
5693 struct ofport *ofport;
5694 unsigned int queue_id;
5695 struct ofpbuf *reply;
5696 struct smap details;
5700 error = ofputil_decode_queue_get_config_request(oh, &request);
5705 ofport = ofproto_get_port(p, request);
5707 return OFPERR_OFPQOFC_BAD_PORT;
5710 reply = ofputil_encode_queue_get_config_reply(oh);
5712 smap_init(&details);
5713 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
5714 struct ofputil_queue_config queue;
5716 /* None of the existing queues have compatible properties, so we
5717 * hard-code omitting min_rate and max_rate. */
5718 queue.queue_id = queue_id;
5719 queue.min_rate = UINT16_MAX;
5720 queue.max_rate = UINT16_MAX;
5721 ofputil_append_queue_get_config_reply(reply, &queue);
5723 smap_destroy(&details);
5725 ofconn_send_reply(ofconn, reply);
5731 init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm,
5732 struct ofgroup **ofgroup)
5735 const long long int now = time_msec();
5737 if (gm->group_id > OFPG_MAX) {
5738 return OFPERR_OFPGMFC_INVALID_GROUP;
5740 if (gm->type > OFPGT11_FF) {
5741 return OFPERR_OFPGMFC_BAD_TYPE;
5744 *ofgroup = ofproto->ofproto_class->group_alloc();
5746 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
5747 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5750 (*ofgroup)->ofproto = ofproto;
5751 *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id;
5752 *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type;
5753 *CONST_CAST(long long int *, &((*ofgroup)->created)) = now;
5754 *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now;
5755 ovs_refcount_init(&(*ofgroup)->ref_count);
5757 list_move(&(*ofgroup)->buckets, &gm->buckets);
5758 *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) =
5759 list_size(&(*ofgroup)->buckets);
5761 /* Construct called BEFORE any locks are held. */
5762 error = ofproto->ofproto_class->group_construct(*ofgroup);
5764 ofputil_bucket_list_destroy(&(*ofgroup)->buckets);
5765 ofproto->ofproto_class->group_dealloc(*ofgroup);
5770 /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to
5771 * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on
5774 add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5776 struct ofgroup *ofgroup;
5779 /* Allocate new group and initialize it. */
5780 error = init_group(ofproto, gm, &ofgroup);
5785 /* We wrlock as late as possible to minimize the time we jam any other
5786 * threads: No visible state changes before acquiring the lock. */
5787 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5789 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5790 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5794 if (ofproto_group_exists__(ofproto, gm->group_id)) {
5795 error = OFPERR_OFPGMFC_GROUP_EXISTS;
5800 /* Insert new group. */
5801 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
5802 hash_int(ofgroup->group_id, 0));
5803 ofproto->n_groups[ofgroup->type]++;
5805 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5810 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5811 ofproto->ofproto_class->group_destruct(ofgroup);
5812 ofputil_bucket_list_destroy(&ofgroup->buckets);
5813 ofproto->ofproto_class->group_dealloc(ofgroup);
5818 /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets
5819 * already in 'new_ofgroup' will be placed just after the (copy of the) bucket
5820 * in 'ofgroup' with bucket ID 'command_bucket_id'. Special
5821 * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are
5824 copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup,
5825 struct ofgroup *new_ofgroup,
5826 uint32_t command_bucket_id)
5828 struct ofputil_bucket *last = NULL;
5830 if (command_bucket_id <= OFPG15_BUCKET_MAX) {
5831 /* Check here to ensure that a bucket corresponding to
5832 * command_bucket_id exists in the old bucket list.
5834 * The subsequent search of below of new_ofgroup covers
5835 * both buckets in the old bucket list and buckets added
5836 * by the insert buckets group mod message this function processes. */
5837 if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) {
5838 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
5841 if (!list_is_empty(&new_ofgroup->buckets)) {
5842 last = ofputil_bucket_list_back(&new_ofgroup->buckets);
5846 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL);
5848 if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) {
5849 VLOG_WARN_RL(&rl, "Duplicate bucket id");
5850 return OFPERR_OFPGMFC_BUCKET_EXISTS;
5853 /* Rearrange list according to command_bucket_id */
5854 if (command_bucket_id == OFPG15_BUCKET_LAST) {
5855 struct ofputil_bucket *new_first;
5856 const struct ofputil_bucket *first;
5858 first = ofputil_bucket_list_front(&ofgroup->buckets);
5859 new_first = ofputil_bucket_find(&new_ofgroup->buckets,
5862 list_splice(new_ofgroup->buckets.next, &new_first->list_node,
5863 &new_ofgroup->buckets);
5864 } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) {
5865 struct ofputil_bucket *after;
5867 /* Presence of bucket is checked above so after should never be NULL */
5868 after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id);
5870 list_splice(after->list_node.next, new_ofgroup->buckets.next,
5871 last->list_node.next);
5877 /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup'
5878 * with the exception of the bucket whose bucket id is 'command_bucket_id'.
5879 * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST
5880 * and OFPG15_BUCKET_ALL are also honored. */
5882 copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup,
5883 struct ofgroup *new_ofgroup,
5884 uint32_t command_bucket_id)
5886 const struct ofputil_bucket *skip = NULL;
5888 if (command_bucket_id == OFPG15_BUCKET_ALL) {
5892 if (command_bucket_id == OFPG15_BUCKET_FIRST) {
5893 if (!list_is_empty(&ofgroup->buckets)) {
5894 skip = ofputil_bucket_list_front(&ofgroup->buckets);
5896 } else if (command_bucket_id == OFPG15_BUCKET_LAST) {
5897 if (!list_is_empty(&ofgroup->buckets)) {
5898 skip = ofputil_bucket_list_back(&ofgroup->buckets);
5901 skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id);
5903 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
5907 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip);
5912 /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and
5913 * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code
5916 * Note that the group is re-created and then replaces the old group in
5917 * ofproto's ofgroup hash map. Thus, the group is never altered while users of
5918 * the xlate module hold a pointer to the group. */
5920 modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5922 struct ofgroup *ofgroup, *new_ofgroup, *retiring;
5925 error = init_group(ofproto, gm, &new_ofgroup);
5930 retiring = new_ofgroup;
5932 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5933 if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) {
5934 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
5938 /* Ofproto's group write lock is held now. */
5939 if (ofgroup->type != gm->type
5940 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5941 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5945 /* Manipulate bucket list for bucket commands */
5946 if (gm->command == OFPGC15_INSERT_BUCKET) {
5947 error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup,
5948 gm->command_bucket_id);
5949 } else if (gm->command == OFPGC15_REMOVE_BUCKET) {
5950 error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup,
5951 gm->command_bucket_id);
5957 /* The group creation time does not change during modification. */
5958 *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created;
5959 *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec();
5961 error = ofproto->ofproto_class->group_modify(new_ofgroup);
5967 /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */
5968 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
5969 hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node,
5970 hash_int(new_ofgroup->group_id, 0));
5971 if (ofgroup->type != new_ofgroup->type) {
5972 ofproto->n_groups[ofgroup->type]--;
5973 ofproto->n_groups[new_ofgroup->type]++;
5977 ofproto_group_unref(retiring);
5978 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5983 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
5984 OVS_RELEASES(ofproto->groups_rwlock)
5987 struct ofputil_flow_mod fm;
5989 /* Delete all flow entries containing this group in a group action */
5990 match_init_catchall(&match);
5991 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
5992 fm.delete_reason = OFPRR_GROUP_DELETE;
5993 fm.out_group = ofgroup->group_id;
5994 handle_flow_mod__(ofproto, &fm, NULL);
5996 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
5997 /* No-one can find this group any more. */
5998 ofproto->n_groups[ofgroup->type]--;
5999 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6000 ofproto_group_unref(ofgroup);
6003 /* Implements OFPGC11_DELETE. */
6005 delete_group(struct ofproto *ofproto, uint32_t group_id)
6007 struct ofgroup *ofgroup;
6009 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6010 if (group_id == OFPG_ALL) {
6012 struct hmap_node *node = hmap_first(&ofproto->groups);
6016 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
6017 delete_group__(ofproto, ofgroup);
6018 /* Lock for each node separately, so that we will not jam the
6019 * other threads for too long time. */
6020 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6023 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
6024 hash_int(group_id, 0), &ofproto->groups) {
6025 if (ofgroup->group_id == group_id) {
6026 delete_group__(ofproto, ofgroup);
6031 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6035 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6037 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6038 struct ofputil_group_mod gm;
6041 error = reject_slave_controller(ofconn);
6046 error = ofputil_decode_group_mod(oh, &gm);
6051 switch (gm.command) {
6053 return add_group(ofproto, &gm);
6055 case OFPGC11_MODIFY:
6056 return modify_group(ofproto, &gm);
6058 case OFPGC11_DELETE:
6059 delete_group(ofproto, gm.group_id);
6062 case OFPGC15_INSERT_BUCKET:
6063 return modify_group(ofproto, &gm);
6065 case OFPGC15_REMOVE_BUCKET:
6066 return modify_group(ofproto, &gm);
6069 if (gm.command > OFPGC11_DELETE) {
6070 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
6071 ofproto->name, gm.command);
6073 return OFPERR_OFPGMFC_BAD_COMMAND;
6077 enum ofputil_table_miss
6078 ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
6080 enum ofputil_table_miss value;
6082 atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value);
6087 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
6089 if (!check_table_id(ofproto, tm->table_id)) {
6090 return OFPERR_OFPTMFC_BAD_TABLE;
6091 } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) {
6092 if (tm->table_id == OFPTT_ALL) {
6094 for (i = 0; i < ofproto->n_tables; i++) {
6095 atomic_store_relaxed(&ofproto->tables[i].miss_config,
6099 atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config,
6107 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6109 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6110 struct ofputil_table_mod tm;
6113 error = reject_slave_controller(ofconn);
6118 error = ofputil_decode_table_mod(oh, &tm);
6123 return table_mod(ofproto, &tm);
6127 handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh)
6130 struct ofputil_bundle_ctrl_msg bctrl;
6132 struct ofputil_bundle_ctrl_msg reply;
6134 error = reject_slave_controller(ofconn);
6139 error = ofputil_decode_bundle_ctrl(oh, &bctrl);
6144 reply.bundle_id = bctrl.bundle_id;
6146 switch (bctrl.type) {
6147 case OFPBCT_OPEN_REQUEST:
6148 error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags);
6149 reply.type = OFPBCT_OPEN_REPLY;
6151 case OFPBCT_CLOSE_REQUEST:
6152 error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags);
6153 reply.type = OFPBCT_CLOSE_REPLY;;
6155 case OFPBCT_COMMIT_REQUEST:
6156 error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags);
6157 reply.type = OFPBCT_COMMIT_REPLY;
6159 case OFPBCT_DISCARD_REQUEST:
6160 error = ofp_bundle_discard(ofconn, bctrl.bundle_id);
6161 reply.type = OFPBCT_DISCARD_REPLY;
6164 case OFPBCT_OPEN_REPLY:
6165 case OFPBCT_CLOSE_REPLY:
6166 case OFPBCT_COMMIT_REPLY:
6167 case OFPBCT_DISCARD_REPLY:
6168 return OFPERR_OFPBFC_BAD_TYPE;
6173 buf = ofputil_encode_bundle_ctrl_reply(oh, &reply);
6174 ofconn_send_reply(ofconn, buf);
6181 handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh)
6184 struct ofputil_bundle_add_msg badd;
6186 error = reject_slave_controller(ofconn);
6191 error = ofputil_decode_bundle_add(oh, &badd);
6196 return ofp_bundle_add_message(ofconn, &badd);
6200 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
6201 OVS_EXCLUDED(ofproto_mutex)
6203 const struct ofp_header *oh = ofpbuf_data(msg);
6207 error = ofptype_decode(&type, oh);
6211 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
6212 && ofpmp_more(oh)) {
6213 /* We have no buffer implementation for multipart requests.
6214 * Report overflow for requests which consists of multiple
6216 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
6220 /* OpenFlow requests. */
6221 case OFPTYPE_ECHO_REQUEST:
6222 return handle_echo_request(ofconn, oh);
6224 case OFPTYPE_FEATURES_REQUEST:
6225 return handle_features_request(ofconn, oh);
6227 case OFPTYPE_GET_CONFIG_REQUEST:
6228 return handle_get_config_request(ofconn, oh);
6230 case OFPTYPE_SET_CONFIG:
6231 return handle_set_config(ofconn, oh);
6233 case OFPTYPE_PACKET_OUT:
6234 return handle_packet_out(ofconn, oh);
6236 case OFPTYPE_PORT_MOD:
6237 return handle_port_mod(ofconn, oh);
6239 case OFPTYPE_FLOW_MOD:
6240 return handle_flow_mod(ofconn, oh);
6242 case OFPTYPE_GROUP_MOD:
6243 return handle_group_mod(ofconn, oh);
6245 case OFPTYPE_TABLE_MOD:
6246 return handle_table_mod(ofconn, oh);
6248 case OFPTYPE_METER_MOD:
6249 return handle_meter_mod(ofconn, oh);
6251 case OFPTYPE_BARRIER_REQUEST:
6252 return handle_barrier_request(ofconn, oh);
6254 case OFPTYPE_ROLE_REQUEST:
6255 return handle_role_request(ofconn, oh);
6257 /* OpenFlow replies. */
6258 case OFPTYPE_ECHO_REPLY:
6261 /* Nicira extension requests. */
6262 case OFPTYPE_FLOW_MOD_TABLE_ID:
6263 return handle_nxt_flow_mod_table_id(ofconn, oh);
6265 case OFPTYPE_SET_FLOW_FORMAT:
6266 return handle_nxt_set_flow_format(ofconn, oh);
6268 case OFPTYPE_SET_PACKET_IN_FORMAT:
6269 return handle_nxt_set_packet_in_format(ofconn, oh);
6271 case OFPTYPE_SET_CONTROLLER_ID:
6272 return handle_nxt_set_controller_id(ofconn, oh);
6274 case OFPTYPE_FLOW_AGE:
6275 /* Nothing to do. */
6278 case OFPTYPE_FLOW_MONITOR_CANCEL:
6279 return handle_flow_monitor_cancel(ofconn, oh);
6281 case OFPTYPE_SET_ASYNC_CONFIG:
6282 return handle_nxt_set_async_config(ofconn, oh);
6284 case OFPTYPE_GET_ASYNC_REQUEST:
6285 return handle_nxt_get_async_request(ofconn, oh);
6287 /* Statistics requests. */
6288 case OFPTYPE_DESC_STATS_REQUEST:
6289 return handle_desc_stats_request(ofconn, oh);
6291 case OFPTYPE_FLOW_STATS_REQUEST:
6292 return handle_flow_stats_request(ofconn, oh);
6294 case OFPTYPE_AGGREGATE_STATS_REQUEST:
6295 return handle_aggregate_stats_request(ofconn, oh);
6297 case OFPTYPE_TABLE_STATS_REQUEST:
6298 return handle_table_stats_request(ofconn, oh);
6300 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
6301 return handle_table_features_request(ofconn, oh);
6303 case OFPTYPE_PORT_STATS_REQUEST:
6304 return handle_port_stats_request(ofconn, oh);
6306 case OFPTYPE_QUEUE_STATS_REQUEST:
6307 return handle_queue_stats_request(ofconn, oh);
6309 case OFPTYPE_PORT_DESC_STATS_REQUEST:
6310 return handle_port_desc_stats_request(ofconn, oh);
6312 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
6313 return handle_flow_monitor_request(ofconn, oh);
6315 case OFPTYPE_METER_STATS_REQUEST:
6316 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
6317 return handle_meter_request(ofconn, oh, type);
6319 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
6320 return handle_meter_features_request(ofconn, oh);
6322 case OFPTYPE_GROUP_STATS_REQUEST:
6323 return handle_group_stats_request(ofconn, oh);
6325 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
6326 return handle_group_desc_stats_request(ofconn, oh);
6328 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
6329 return handle_group_features_stats_request(ofconn, oh);
6331 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
6332 return handle_queue_get_config_request(ofconn, oh);
6334 case OFPTYPE_BUNDLE_CONTROL:
6335 return handle_bundle_control(ofconn, oh);
6337 case OFPTYPE_BUNDLE_ADD_MESSAGE:
6338 return handle_bundle_add(ofconn, oh);
6342 case OFPTYPE_FEATURES_REPLY:
6343 case OFPTYPE_GET_CONFIG_REPLY:
6344 case OFPTYPE_PACKET_IN:
6345 case OFPTYPE_FLOW_REMOVED:
6346 case OFPTYPE_PORT_STATUS:
6347 case OFPTYPE_BARRIER_REPLY:
6348 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
6349 case OFPTYPE_DESC_STATS_REPLY:
6350 case OFPTYPE_FLOW_STATS_REPLY:
6351 case OFPTYPE_QUEUE_STATS_REPLY:
6352 case OFPTYPE_PORT_STATS_REPLY:
6353 case OFPTYPE_TABLE_STATS_REPLY:
6354 case OFPTYPE_AGGREGATE_STATS_REPLY:
6355 case OFPTYPE_PORT_DESC_STATS_REPLY:
6356 case OFPTYPE_ROLE_REPLY:
6357 case OFPTYPE_FLOW_MONITOR_PAUSED:
6358 case OFPTYPE_FLOW_MONITOR_RESUMED:
6359 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
6360 case OFPTYPE_GET_ASYNC_REPLY:
6361 case OFPTYPE_GROUP_STATS_REPLY:
6362 case OFPTYPE_GROUP_DESC_STATS_REPLY:
6363 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
6364 case OFPTYPE_METER_STATS_REPLY:
6365 case OFPTYPE_METER_CONFIG_STATS_REPLY:
6366 case OFPTYPE_METER_FEATURES_STATS_REPLY:
6367 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
6368 case OFPTYPE_ROLE_STATUS:
6370 if (ofpmsg_is_stat_request(oh)) {
6371 return OFPERR_OFPBRC_BAD_STAT;
6373 return OFPERR_OFPBRC_BAD_TYPE;
6379 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
6380 OVS_EXCLUDED(ofproto_mutex)
6382 int error = handle_openflow__(ofconn, ofp_msg);
6384 ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error);
6386 COVERAGE_INC(ofproto_recv_openflow);
6389 /* Asynchronous operations. */
6392 send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id,
6394 OVS_REQUIRES(ofproto_mutex)
6396 enum ofperr error = 0;
6397 if (ofconn && buffer_id != UINT32_MAX) {
6398 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6399 struct ofpbuf *packet;
6402 error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port);
6404 struct rule_execute *re;
6406 ofproto_rule_ref(rule);
6408 re = xmalloc(sizeof *re);
6410 re->in_port = in_port;
6411 re->packet = packet;
6413 if (!guarded_list_push_back(&ofproto->rule_executes,
6414 &re->list_node, 1024)) {
6415 ofproto_rule_unref(rule);
6416 ofpbuf_delete(re->packet);
6425 pick_datapath_id(const struct ofproto *ofproto)
6427 const struct ofport *port;
6429 port = ofproto_get_port(ofproto, OFPP_LOCAL);
6431 uint8_t ea[ETH_ADDR_LEN];
6434 error = netdev_get_etheraddr(port->netdev, ea);
6436 return eth_addr_to_uint64(ea);
6438 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6439 ofproto->name, netdev_get_name(port->netdev),
6440 ovs_strerror(error));
6442 return ofproto->fallback_dpid;
6446 pick_fallback_dpid(void)
6448 uint8_t ea[ETH_ADDR_LEN];
6449 eth_addr_nicira_random(ea);
6450 return eth_addr_to_uint64(ea);
6453 /* Table overflow policy. */
6455 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6456 * to NULL if the table is not configured to evict rules or if the table
6457 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6458 * or with no timeouts are not evictable.) */
6460 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
6461 OVS_REQUIRES(ofproto_mutex)
6463 struct eviction_group *evg;
6466 if (!table->eviction_fields) {
6470 /* In the common case, the outer and inner loops here will each be entered
6473 * - The inner loop normally "return"s in its first iteration. If the
6474 * eviction group has any evictable rules, then it always returns in
6477 * - The outer loop only iterates more than once if the largest eviction
6478 * group has no evictable rules.
6480 * - The outer loop can exit only if table's 'max_flows' is all filled up
6481 * by unevictable rules. */
6482 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
6485 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
6494 /* Eviction groups. */
6496 /* Returns the priority to use for an eviction_group that contains 'n_rules'
6497 * rules. The priority contains low-order random bits to ensure that eviction
6498 * groups with the same number of rules are prioritized randomly. */
6500 eviction_group_priority(size_t n_rules)
6502 uint16_t size = MIN(UINT16_MAX, n_rules);
6503 return (size << 16) | random_uint16();
6506 /* Updates 'evg', an eviction_group within 'table', following a change that
6507 * adds or removes rules in 'evg'. */
6509 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
6510 OVS_REQUIRES(ofproto_mutex)
6512 heap_change(&table->eviction_groups_by_size, &evg->size_node,
6513 eviction_group_priority(heap_count(&evg->rules)));
6516 /* Destroys 'evg', an eviction_group within 'table':
6518 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
6519 * rules themselves, just removes them from the eviction group.)
6521 * - Removes 'evg' from 'table'.
6525 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
6526 OVS_REQUIRES(ofproto_mutex)
6528 while (!heap_is_empty(&evg->rules)) {
6531 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
6532 rule->eviction_group = NULL;
6534 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
6535 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
6536 heap_destroy(&evg->rules);
6540 /* Removes 'rule' from its eviction group, if any. */
6542 eviction_group_remove_rule(struct rule *rule)
6543 OVS_REQUIRES(ofproto_mutex)
6545 if (rule->eviction_group) {
6546 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6547 struct eviction_group *evg = rule->eviction_group;
6549 rule->eviction_group = NULL;
6550 heap_remove(&evg->rules, &rule->evg_node);
6551 if (heap_is_empty(&evg->rules)) {
6552 eviction_group_destroy(table, evg);
6554 eviction_group_resized(table, evg);
6559 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
6560 * returns the hash value. */
6562 eviction_group_hash_rule(struct rule *rule)
6563 OVS_REQUIRES(ofproto_mutex)
6565 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6566 const struct mf_subfield *sf;
6570 hash = table->eviction_group_id_basis;
6571 miniflow_expand(&rule->cr.match.flow, &flow);
6572 for (sf = table->eviction_fields;
6573 sf < &table->eviction_fields[table->n_eviction_fields];
6576 if (mf_are_prereqs_ok(sf->field, &flow)) {
6577 union mf_value value;
6579 mf_get_value(sf->field, &flow, &value);
6581 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
6583 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
6584 unsigned int start = sf->ofs + sf->n_bits;
6585 bitwise_zero(&value, sf->field->n_bytes, start,
6586 sf->field->n_bytes * 8 - start);
6588 hash = hash_bytes(&value, sf->field->n_bytes, hash);
6590 hash = hash_int(hash, 0);
6597 /* Returns an eviction group within 'table' with the given 'id', creating one
6599 static struct eviction_group *
6600 eviction_group_find(struct oftable *table, uint32_t id)
6601 OVS_REQUIRES(ofproto_mutex)
6603 struct eviction_group *evg;
6605 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
6609 evg = xmalloc(sizeof *evg);
6610 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
6611 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
6612 eviction_group_priority(0));
6613 heap_init(&evg->rules);
6618 /* Returns an eviction priority for 'rule'. The return value should be
6619 * interpreted so that higher priorities make a rule more attractive candidates
6621 * Called only if have a timeout. */
6623 rule_eviction_priority(struct ofproto *ofproto, struct rule *rule)
6624 OVS_REQUIRES(ofproto_mutex)
6626 long long int expiration = LLONG_MAX;
6627 long long int modified;
6628 uint32_t expiration_offset;
6630 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
6631 ovs_mutex_lock(&rule->mutex);
6632 modified = rule->modified;
6633 ovs_mutex_unlock(&rule->mutex);
6635 if (rule->hard_timeout) {
6636 expiration = modified + rule->hard_timeout * 1000;
6638 if (rule->idle_timeout) {
6639 uint64_t packets, bytes;
6641 long long int idle_expiration;
6643 ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used);
6644 idle_expiration = used + rule->idle_timeout * 1000;
6645 expiration = MIN(expiration, idle_expiration);
6648 if (expiration == LLONG_MAX) {
6652 /* Calculate the time of expiration as a number of (approximate) seconds
6653 * after program startup.
6655 * This should work OK for program runs that last UINT32_MAX seconds or
6656 * less. Therefore, please restart OVS at least once every 136 years. */
6657 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
6659 /* Invert the expiration offset because we're using a max-heap. */
6660 return UINT32_MAX - expiration_offset;
6663 /* Adds 'rule' to an appropriate eviction group for its oftable's
6664 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
6665 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
6668 * The caller must ensure that 'rule' is not already in an eviction group. */
6670 eviction_group_add_rule(struct rule *rule)
6671 OVS_REQUIRES(ofproto_mutex)
6673 struct ofproto *ofproto = rule->ofproto;
6674 struct oftable *table = &ofproto->tables[rule->table_id];
6677 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
6678 * so no additional protection is needed. */
6679 has_timeout = rule->hard_timeout || rule->idle_timeout;
6681 if (table->eviction_fields && has_timeout) {
6682 struct eviction_group *evg;
6684 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
6686 rule->eviction_group = evg;
6687 heap_insert(&evg->rules, &rule->evg_node,
6688 rule_eviction_priority(ofproto, rule));
6689 eviction_group_resized(table, evg);
6695 /* Initializes 'table'. */
6697 oftable_init(struct oftable *table)
6699 memset(table, 0, sizeof *table);
6700 classifier_init(&table->cls, flow_segment_u32s);
6701 table->max_flows = UINT_MAX;
6702 atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
6704 classifier_set_prefix_fields(&table->cls, default_prefix_fields,
6705 ARRAY_SIZE(default_prefix_fields));
6707 atomic_init(&table->n_matched, 0);
6708 atomic_init(&table->n_missed, 0);
6711 /* Destroys 'table', including its classifier and eviction groups.
6713 * The caller is responsible for freeing 'table' itself. */
6715 oftable_destroy(struct oftable *table)
6717 ovs_assert(classifier_is_empty(&table->cls));
6718 oftable_disable_eviction(table);
6719 classifier_destroy(&table->cls);
6723 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
6724 * string, then 'table' will use its default name.
6726 * This only affects the name exposed for a table exposed through the OpenFlow
6727 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
6729 oftable_set_name(struct oftable *table, const char *name)
6731 if (name && name[0]) {
6732 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
6733 if (!table->name || strncmp(name, table->name, len)) {
6735 table->name = xmemdup0(name, len);
6743 /* oftables support a choice of two policies when adding a rule would cause the
6744 * number of flows in the table to exceed the configured maximum number: either
6745 * they can refuse to add the new flow or they can evict some existing flow.
6746 * This function configures the former policy on 'table'. */
6748 oftable_disable_eviction(struct oftable *table)
6749 OVS_REQUIRES(ofproto_mutex)
6751 if (table->eviction_fields) {
6752 struct eviction_group *evg, *next;
6754 HMAP_FOR_EACH_SAFE (evg, next, id_node,
6755 &table->eviction_groups_by_id) {
6756 eviction_group_destroy(table, evg);
6758 hmap_destroy(&table->eviction_groups_by_id);
6759 heap_destroy(&table->eviction_groups_by_size);
6761 free(table->eviction_fields);
6762 table->eviction_fields = NULL;
6763 table->n_eviction_fields = 0;
6767 /* oftables support a choice of two policies when adding a rule would cause the
6768 * number of flows in the table to exceed the configured maximum number: either
6769 * they can refuse to add the new flow or they can evict some existing flow.
6770 * This function configures the latter policy on 'table', with fairness based
6771 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
6772 * 'n_fields' as 0 disables fairness.) */
6774 oftable_enable_eviction(struct oftable *table,
6775 const struct mf_subfield *fields, size_t n_fields)
6776 OVS_REQUIRES(ofproto_mutex)
6780 if (table->eviction_fields
6781 && n_fields == table->n_eviction_fields
6783 || !memcmp(fields, table->eviction_fields,
6784 n_fields * sizeof *fields))) {
6789 oftable_disable_eviction(table);
6791 table->n_eviction_fields = n_fields;
6792 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
6794 table->eviction_group_id_basis = random_uint32();
6795 hmap_init(&table->eviction_groups_by_id);
6796 heap_init(&table->eviction_groups_by_size);
6798 CLS_FOR_EACH (rule, cr, &table->cls) {
6799 eviction_group_add_rule(rule);
6803 /* Removes 'rule' from the ofproto data structures AFTER caller has removed
6804 * it from the classifier. */
6806 ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule)
6807 OVS_REQUIRES(ofproto_mutex)
6809 cookies_remove(ofproto, rule);
6811 eviction_group_remove_rule(rule);
6812 if (!list_is_empty(&rule->expirable)) {
6813 list_remove(&rule->expirable);
6815 if (!list_is_empty(&rule->meter_list_node)) {
6816 list_remove(&rule->meter_list_node);
6817 list_init(&rule->meter_list_node);
6822 oftable_remove_rule(struct rule *rule)
6823 OVS_REQUIRES(ofproto_mutex)
6825 struct classifier *cls = &rule->ofproto->tables[rule->table_id].cls;
6827 if (classifier_remove(cls, &rule->cr)) {
6828 ofproto_rule_remove__(rule->ofproto, rule);
6832 /* unixctl commands. */
6835 ofproto_lookup(const char *name)
6837 struct ofproto *ofproto;
6839 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
6841 if (!strcmp(ofproto->name, name)) {
6849 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
6850 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6852 struct ofproto *ofproto;
6856 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
6857 ds_put_format(&results, "%s\n", ofproto->name);
6859 unixctl_command_reply(conn, ds_cstr(&results));
6860 ds_destroy(&results);
6864 ofproto_unixctl_init(void)
6866 static bool registered;
6872 unixctl_command_register("ofproto/list", "", 0, 0,
6873 ofproto_unixctl_list, NULL);
6876 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6878 * This is deprecated. It is only for compatibility with broken device drivers
6879 * in old versions of Linux that do not properly support VLANs when VLAN
6880 * devices are not used. When broken device drivers are no longer in
6881 * widespread use, we will delete these interfaces. */
6883 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
6884 * (exactly) by an OpenFlow rule in 'ofproto'. */
6886 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
6889 struct cls_rule target;
6890 const struct oftable *oftable;
6892 match_init_catchall(&match);
6893 match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI));
6894 cls_rule_init(&target, &match, 0);
6896 free(ofproto->vlan_bitmap);
6897 ofproto->vlan_bitmap = bitmap_allocate(4096);
6898 ofproto->vlans_changed = false;
6900 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
6903 CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) {
6904 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
6905 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
6907 bitmap_set1(vlan_bitmap, vid);
6908 bitmap_set1(ofproto->vlan_bitmap, vid);
6913 cls_rule_destroy(&target);
6916 /* Returns true if new VLANs have come into use by the flow table since the
6917 * last call to ofproto_get_vlan_usage().
6919 * We don't track when old VLANs stop being used. */
6921 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
6923 return ofproto->vlans_changed;
6926 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
6927 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
6928 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
6929 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
6930 * then the VLAN device is un-enslaved. */
6932 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
6933 ofp_port_t realdev_ofp_port, int vid)
6935 struct ofport *ofport;
6938 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
6940 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
6942 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
6943 ofproto->name, vlandev_ofp_port);
6947 if (!ofproto->ofproto_class->set_realdev) {
6948 if (!vlandev_ofp_port) {
6951 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
6955 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
6957 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
6958 ofproto->name, vlandev_ofp_port,
6959 netdev_get_name(ofport->netdev), ovs_strerror(error));