2 * Copyright (c) 2009-2015 Nicira, Inc.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
26 #include "byte-order.h"
27 #include "classifier.h"
28 #include "connectivity.h"
31 #include "dynamic-string.h"
34 #include "meta-flow.h"
37 #include "ofp-actions.h"
38 #include "ofp-errors.h"
40 #include "ofp-print.h"
43 #include "ofproto-provider.h"
44 #include "openflow/nicira-ext.h"
45 #include "openflow/openflow.h"
47 #include "dp-packet.h"
51 #include "poll-loop.h"
59 #include "unaligned.h"
61 #include "openvswitch/vlog.h"
64 VLOG_DEFINE_THIS_MODULE(ofproto);
66 COVERAGE_DEFINE(ofproto_flush);
67 COVERAGE_DEFINE(ofproto_packet_out);
68 COVERAGE_DEFINE(ofproto_queue_req);
69 COVERAGE_DEFINE(ofproto_recv_openflow);
70 COVERAGE_DEFINE(ofproto_reinit_ports);
71 COVERAGE_DEFINE(ofproto_update_port);
73 /* Default fields to use for prefix tries in each flow table, unless something
74 * else is configured. */
75 const enum mf_field_id default_prefix_fields[2] =
76 { MFF_IPV4_DST, MFF_IPV4_SRC };
79 static void oftable_init(struct oftable *);
80 static void oftable_destroy(struct oftable *);
82 static void oftable_set_name(struct oftable *, const char *name);
84 static enum ofperr evict_rules_from_table(struct oftable *,
85 unsigned int extra_space)
86 OVS_REQUIRES(ofproto_mutex);
87 static void oftable_disable_eviction(struct oftable *);
88 static void oftable_enable_eviction(struct oftable *,
89 const struct mf_subfield *fields,
92 static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex);
94 /* A set of rules within a single OpenFlow table (oftable) that have the same
95 * values for the oftable's eviction_fields. A rule to be evicted, when one is
96 * needed, is taken from the eviction group that contains the greatest number
99 * An oftable owns any number of eviction groups, each of which contains any
102 * Membership in an eviction group is imprecise, based on the hash of the
103 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
104 * That is, if two rules have different eviction_fields, but those
105 * eviction_fields hash to the same value, then they will belong to the same
106 * eviction_group anyway.
108 * (When eviction is not enabled on an oftable, we don't track any eviction
109 * groups, to save time and space.) */
110 struct eviction_group {
111 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
112 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
113 struct heap rules; /* Contains "struct rule"s. */
116 static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
117 OVS_REQUIRES(ofproto_mutex);
118 static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *)
119 OVS_REQUIRES(ofproto_mutex);;
120 static void eviction_group_add_rule(struct rule *)
121 OVS_REQUIRES(ofproto_mutex);
122 static void eviction_group_remove_rule(struct rule *)
123 OVS_REQUIRES(ofproto_mutex);
125 /* Criteria that flow_mod and other operations use for selecting rules on
126 * which to operate. */
127 struct rule_criteria {
128 /* An OpenFlow table or 255 for all tables. */
131 /* OpenFlow matching criteria. Interpreted different in "loose" way by
132 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
133 * defined in the OpenFlow spec. */
136 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
137 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
138 * The rule will not be selected if M is 1 and B != C. */
140 ovs_be64 cookie_mask;
142 /* Selection based on actions within a rule:
144 * If out_port != OFPP_ANY, selects only rules that output to out_port.
145 * If out_group != OFPG_ALL, select only rules that output to out_group. */
149 /* If true, collects only rules that are modifiable. */
151 bool include_readonly;
154 static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
155 const struct match *match, int priority,
156 ovs_be64 cookie, ovs_be64 cookie_mask,
157 ofp_port_t out_port, uint32_t out_group);
158 static void rule_criteria_require_rw(struct rule_criteria *,
159 bool can_write_readonly);
160 static void rule_criteria_destroy(struct rule_criteria *);
162 static enum ofperr collect_rules_loose(struct ofproto *,
163 const struct rule_criteria *,
164 struct rule_collection *);
166 /* A packet that needs to be passed to rule_execute().
168 * (We can't do this immediately from ofopgroup_complete() because that holds
169 * ofproto_mutex, which rule_execute() needs released.) */
170 struct rule_execute {
171 struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */
172 struct rule *rule; /* Owns a reference to the rule. */
174 struct dp_packet *packet; /* Owns the packet. */
177 static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
178 static void destroy_rule_executes(struct ofproto *);
180 struct learned_cookie {
182 /* In struct ofproto's 'learned_cookies' hmap. */
183 struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex);
185 /* In 'dead_cookies' list when removed from hmap. */
186 struct ovs_list list_node;
190 ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex);
191 uint8_t table_id OVS_GUARDED_BY(ofproto_mutex);
193 /* Number of references from "learn" actions.
195 * When this drops to 0, all of the flows in 'table_id' with the specified
196 * 'cookie' are deleted. */
197 int n OVS_GUARDED_BY(ofproto_mutex);
200 static const struct ofpact_learn *next_learn_with_delete(
201 const struct rule_actions *, const struct ofpact_learn *start);
203 static void learned_cookies_inc(struct ofproto *, const struct rule_actions *)
204 OVS_REQUIRES(ofproto_mutex);
205 static void learned_cookies_dec(struct ofproto *, const struct rule_actions *,
206 struct ovs_list *dead_cookies)
207 OVS_REQUIRES(ofproto_mutex);
208 static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies)
209 OVS_REQUIRES(ofproto_mutex);
212 static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
213 static void ofport_destroy(struct ofport *);
215 static void update_port(struct ofproto *, const char *devname);
216 static int init_ports(struct ofproto *);
217 static void reinit_ports(struct ofproto *);
219 static long long int ofport_get_usage(const struct ofproto *,
220 ofp_port_t ofp_port);
221 static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
222 long long int last_used);
223 static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
227 * Keeps track of the currently used and recently used ofport values and is
228 * used to prevent immediate recycling of ofport values. */
229 struct ofport_usage {
230 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
231 ofp_port_t ofp_port; /* OpenFlow port number. */
232 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
233 represents in-use ofports. */
237 static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
238 static bool rule_is_readonly(const struct rule *);
239 static void ofproto_rule_insert__(struct ofproto *, struct rule *)
240 OVS_REQUIRES(ofproto_mutex);
241 static void ofproto_rule_remove__(struct ofproto *, struct rule *)
242 OVS_REQUIRES(ofproto_mutex);
244 /* The source of a flow_mod request, in the code that processes flow_mods.
246 * A flow table modification request can be generated externally, via OpenFlow,
247 * or internally through a function call. This structure indicates the source
248 * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't
249 * meaningful and thus supplied as NULL. */
250 struct flow_mod_requester {
251 struct ofconn *ofconn; /* Connection on which flow_mod arrived. */
252 const struct ofp_header *request;
256 static enum ofperr modify_flow_check__(struct ofproto *,
257 struct ofputil_flow_mod *,
259 OVS_REQUIRES(ofproto_mutex);
260 static void modify_flow__(struct ofproto *, struct ofputil_flow_mod *,
261 const struct flow_mod_requester *, struct rule *,
262 struct ovs_list *dead_cookies)
263 OVS_REQUIRES(ofproto_mutex);
264 static void delete_flows__(const struct rule_collection *,
265 enum ofp_flow_removed_reason,
266 const struct flow_mod_requester *)
267 OVS_REQUIRES(ofproto_mutex);
269 static void send_buffered_packet(const struct flow_mod_requester *,
270 uint32_t buffer_id, struct rule *)
271 OVS_REQUIRES(ofproto_mutex);
273 static bool ofproto_group_exists__(const struct ofproto *ofproto,
275 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
276 static bool ofproto_group_exists(const struct ofproto *ofproto,
278 OVS_EXCLUDED(ofproto->groups_rwlock);
279 static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
280 static void handle_openflow(struct ofconn *, const struct ofpbuf *);
281 static enum ofperr do_bundle_flow_mod_begin(struct ofproto *,
282 struct ofputil_flow_mod *,
283 struct ofp_bundle_entry *)
284 OVS_REQUIRES(ofproto_mutex);
285 static void do_bundle_flow_mod_finish(struct ofproto *,
286 struct ofputil_flow_mod *,
287 const struct flow_mod_requester *,
288 struct ofp_bundle_entry *)
289 OVS_REQUIRES(ofproto_mutex);
290 static enum ofperr handle_flow_mod__(struct ofproto *,
291 struct ofputil_flow_mod *,
292 const struct flow_mod_requester *)
293 OVS_EXCLUDED(ofproto_mutex);
294 static void calc_duration(long long int start, long long int now,
295 uint32_t *sec, uint32_t *nsec);
298 static uint64_t pick_datapath_id(const struct ofproto *);
299 static uint64_t pick_fallback_dpid(void);
300 static void ofproto_destroy__(struct ofproto *);
301 static void update_mtu(struct ofproto *, struct ofport *);
302 static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
303 static void meter_insert_rule(struct rule *);
306 static void ofproto_unixctl_init(void);
308 /* All registered ofproto classes, in probe order. */
309 static const struct ofproto_class **ofproto_classes;
310 static size_t n_ofproto_classes;
311 static size_t allocated_ofproto_classes;
313 /* Global lock that protects all flow table operations. */
314 struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
316 unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
317 unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
319 size_t n_handlers, n_revalidators;
323 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
324 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
326 /* Initial mappings of port to OpenFlow number mappings. */
327 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
329 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
331 /* The default value of true waits for flow restore. */
332 static bool flow_restore_wait = true;
334 /* Must be called to initialize the ofproto library.
336 * The caller may pass in 'iface_hints', which contains an shash of
337 * "iface_hint" elements indexed by the interface's name. The provider
338 * may use these hints to describe the startup configuration in order to
339 * reinitialize its state. The caller owns the provided data, so a
340 * provider will make copies of anything required. An ofproto provider
341 * will remove any existing state that is not described by the hint, and
342 * may choose to remove it all. */
344 ofproto_init(const struct shash *iface_hints)
346 struct shash_node *node;
349 ofproto_class_register(&ofproto_dpif_class);
351 /* Make a local copy, since we don't own 'iface_hints' elements. */
352 SHASH_FOR_EACH(node, iface_hints) {
353 const struct iface_hint *orig_hint = node->data;
354 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
355 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
357 new_hint->br_name = xstrdup(orig_hint->br_name);
358 new_hint->br_type = xstrdup(br_type);
359 new_hint->ofp_port = orig_hint->ofp_port;
361 shash_add(&init_ofp_ports, node->name, new_hint);
364 for (i = 0; i < n_ofproto_classes; i++) {
365 ofproto_classes[i]->init(&init_ofp_ports);
369 /* 'type' should be a normalized datapath type, as returned by
370 * ofproto_normalize_type(). Returns the corresponding ofproto_class
371 * structure, or a null pointer if there is none registered for 'type'. */
372 static const struct ofproto_class *
373 ofproto_class_find__(const char *type)
377 for (i = 0; i < n_ofproto_classes; i++) {
378 const struct ofproto_class *class = ofproto_classes[i];
383 class->enumerate_types(&types);
384 found = sset_contains(&types, type);
385 sset_destroy(&types);
391 VLOG_WARN("unknown datapath type %s", type);
395 /* Registers a new ofproto class. After successful registration, new ofprotos
396 * of that type can be created using ofproto_create(). */
398 ofproto_class_register(const struct ofproto_class *new_class)
402 for (i = 0; i < n_ofproto_classes; i++) {
403 if (ofproto_classes[i] == new_class) {
408 if (n_ofproto_classes >= allocated_ofproto_classes) {
409 ofproto_classes = x2nrealloc(ofproto_classes,
410 &allocated_ofproto_classes,
411 sizeof *ofproto_classes);
413 ofproto_classes[n_ofproto_classes++] = new_class;
417 /* Unregisters a datapath provider. 'type' must have been previously
418 * registered and not currently be in use by any ofprotos. After
419 * unregistration new datapaths of that type cannot be opened using
420 * ofproto_create(). */
422 ofproto_class_unregister(const struct ofproto_class *class)
426 for (i = 0; i < n_ofproto_classes; i++) {
427 if (ofproto_classes[i] == class) {
428 for (i++; i < n_ofproto_classes; i++) {
429 ofproto_classes[i - 1] = ofproto_classes[i];
435 VLOG_WARN("attempted to unregister an ofproto class that is not "
440 /* Clears 'types' and enumerates all registered ofproto types into it. The
441 * caller must first initialize the sset. */
443 ofproto_enumerate_types(struct sset *types)
448 for (i = 0; i < n_ofproto_classes; i++) {
449 ofproto_classes[i]->enumerate_types(types);
453 /* Returns the fully spelled out name for the given ofproto 'type'.
455 * Normalized type string can be compared with strcmp(). Unnormalized type
456 * string might be the same even if they have different spellings. */
458 ofproto_normalize_type(const char *type)
460 return type && type[0] ? type : "system";
463 /* Clears 'names' and enumerates the names of all known created ofprotos with
464 * the given 'type'. The caller must first initialize the sset. Returns 0 if
465 * successful, otherwise a positive errno value.
467 * Some kinds of datapaths might not be practically enumerable. This is not
468 * considered an error. */
470 ofproto_enumerate_names(const char *type, struct sset *names)
472 const struct ofproto_class *class = ofproto_class_find__(type);
473 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
477 ofproto_create(const char *datapath_name, const char *datapath_type,
478 struct ofproto **ofprotop)
480 const struct ofproto_class *class;
481 struct ofproto *ofproto;
487 ofproto_unixctl_init();
489 datapath_type = ofproto_normalize_type(datapath_type);
490 class = ofproto_class_find__(datapath_type);
492 VLOG_WARN("could not create datapath %s of unknown type %s",
493 datapath_name, datapath_type);
497 ofproto = class->alloc();
499 VLOG_ERR("failed to allocate datapath %s of type %s",
500 datapath_name, datapath_type);
505 ovs_mutex_lock(&ofproto_mutex);
506 memset(ofproto, 0, sizeof *ofproto);
507 ofproto->ofproto_class = class;
508 ofproto->name = xstrdup(datapath_name);
509 ofproto->type = xstrdup(datapath_type);
510 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
511 hash_string(ofproto->name, 0));
512 ofproto->datapath_id = 0;
513 ofproto->forward_bpdu = false;
514 ofproto->fallback_dpid = pick_fallback_dpid();
515 ofproto->mfr_desc = NULL;
516 ofproto->hw_desc = NULL;
517 ofproto->sw_desc = NULL;
518 ofproto->serial_desc = NULL;
519 ofproto->dp_desc = NULL;
520 ofproto->frag_handling = OFPC_FRAG_NORMAL;
521 hmap_init(&ofproto->ports);
522 hmap_init(&ofproto->ofport_usage);
523 shash_init(&ofproto->port_by_name);
524 simap_init(&ofproto->ofp_requests);
525 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
526 ofproto->eviction_group_timer = LLONG_MIN;
527 ofproto->tables = NULL;
528 ofproto->n_tables = 0;
529 hindex_init(&ofproto->cookies);
530 hmap_init(&ofproto->learned_cookies);
531 list_init(&ofproto->expirable);
532 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
533 guarded_list_init(&ofproto->rule_executes);
534 ofproto->vlan_bitmap = NULL;
535 ofproto->vlans_changed = false;
536 ofproto->min_mtu = INT_MAX;
537 ovs_rwlock_init(&ofproto->groups_rwlock);
538 hmap_init(&ofproto->groups);
539 ovs_mutex_unlock(&ofproto_mutex);
540 ofproto->ogf.types = 0xf;
541 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
542 OFPGFC_SELECT_WEIGHT;
543 for (i = 0; i < 4; i++) {
544 ofproto->ogf.max_groups[i] = OFPG_MAX;
545 ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
548 error = ofproto->ofproto_class->construct(ofproto);
550 VLOG_ERR("failed to open datapath %s: %s",
551 datapath_name, ovs_strerror(error));
552 connmgr_destroy(ofproto->connmgr);
553 ofproto_destroy__(ofproto);
557 /* Check that hidden tables, if any, are at the end. */
558 ovs_assert(ofproto->n_tables);
559 for (i = 0; i + 1 < ofproto->n_tables; i++) {
560 enum oftable_flags flags = ofproto->tables[i].flags;
561 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
563 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
566 ofproto->datapath_id = pick_datapath_id(ofproto);
569 /* Initialize meters table. */
570 if (ofproto->ofproto_class->meter_get_features) {
571 ofproto->ofproto_class->meter_get_features(ofproto,
572 &ofproto->meter_features);
574 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
576 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
577 * sizeof(struct meter *));
583 /* Must be called (only) by an ofproto implementation in its constructor
584 * function. See the large comment on 'construct' in struct ofproto_class for
587 ofproto_init_tables(struct ofproto *ofproto, int n_tables)
589 struct oftable *table;
591 ovs_assert(!ofproto->n_tables);
592 ovs_assert(n_tables >= 1 && n_tables <= 255);
594 ofproto->n_tables = n_tables;
595 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
596 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
601 /* To be optionally called (only) by an ofproto implementation in its
602 * constructor function. See the large comment on 'construct' in struct
603 * ofproto_class for details.
605 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
606 * will then ensure that actions passed into the ofproto implementation will
607 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
608 * function is not called, there will be no such restriction.
610 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
611 * the 'max_ports' restriction. */
613 ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
615 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
616 ofproto->max_ports = max_ports;
620 ofproto_get_datapath_id(const struct ofproto *ofproto)
622 return ofproto->datapath_id;
626 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
628 uint64_t old_dpid = p->datapath_id;
629 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
630 if (p->datapath_id != old_dpid) {
631 /* Force all active connections to reconnect, since there is no way to
632 * notify a controller that the datapath ID has changed. */
633 ofproto_reconnect_controllers(p);
638 ofproto_set_controllers(struct ofproto *p,
639 const struct ofproto_controller *controllers,
640 size_t n_controllers, uint32_t allowed_versions)
642 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
647 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
649 connmgr_set_fail_mode(p->connmgr, fail_mode);
652 /* Drops the connections between 'ofproto' and all of its controllers, forcing
653 * them to reconnect. */
655 ofproto_reconnect_controllers(struct ofproto *ofproto)
657 connmgr_reconnect(ofproto->connmgr);
660 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
661 * in-band control should guarantee access, in the same way that in-band
662 * control guarantees access to OpenFlow controllers. */
664 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
665 const struct sockaddr_in *extras, size_t n)
667 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
670 /* Sets the OpenFlow queue used by flows set up by in-band control on
671 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
672 * flows will use the default queue. */
674 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
676 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
679 /* Sets the number of flows at which eviction from the kernel flow table
682 ofproto_set_flow_limit(unsigned limit)
684 ofproto_flow_limit = limit;
687 /* Sets the maximum idle time for flows in the datapath before they are
690 ofproto_set_max_idle(unsigned max_idle)
692 ofproto_max_idle = max_idle;
695 /* If forward_bpdu is true, the NORMAL action will forward frames with
696 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
697 * the NORMAL action will drop these frames. */
699 ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
701 bool old_val = ofproto->forward_bpdu;
702 ofproto->forward_bpdu = forward_bpdu;
703 if (old_val != ofproto->forward_bpdu) {
704 if (ofproto->ofproto_class->forward_bpdu_changed) {
705 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
710 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
711 * 'idle_time', in seconds, and the maximum number of MAC table entries to
714 ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
717 if (ofproto->ofproto_class->set_mac_table_config) {
718 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
723 /* Multicast snooping configuration. */
725 /* Configures multicast snooping on 'ofproto' using the settings
726 * defined in 's'. If 's' is NULL, disables multicast snooping.
728 * Returns 0 if successful, otherwise a positive errno value. */
730 ofproto_set_mcast_snooping(struct ofproto *ofproto,
731 const struct ofproto_mcast_snooping_settings *s)
733 return (ofproto->ofproto_class->set_mcast_snooping
734 ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
738 /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'.
740 * Returns 0 if successful, otherwise a positive errno value.*/
742 ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux,
743 const struct ofproto_mcast_snooping_port_settings *s)
745 return (ofproto->ofproto_class->set_mcast_snooping_port
746 ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s)
751 ofproto_set_n_dpdk_rxqs(int n_rxqs)
753 n_dpdk_rxqs = MAX(n_rxqs, 0);
757 ofproto_set_cpu_mask(const char *cmask)
761 pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
765 ofproto_set_threads(int n_handlers_, int n_revalidators_)
767 int threads = MAX(count_cpu_cores(), 2);
769 n_revalidators = MAX(n_revalidators_, 0);
770 n_handlers = MAX(n_handlers_, 0);
772 if (!n_revalidators) {
773 n_revalidators = n_handlers
774 ? MAX(threads - (int) n_handlers, 1)
779 n_handlers = MAX(threads - (int) n_revalidators, 1);
784 ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
787 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
791 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
793 return connmgr_set_snoops(ofproto->connmgr, snoops);
797 ofproto_set_netflow(struct ofproto *ofproto,
798 const struct netflow_options *nf_options)
800 if (nf_options && sset_is_empty(&nf_options->collectors)) {
804 if (ofproto->ofproto_class->set_netflow) {
805 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
807 return nf_options ? EOPNOTSUPP : 0;
812 ofproto_set_sflow(struct ofproto *ofproto,
813 const struct ofproto_sflow_options *oso)
815 if (oso && sset_is_empty(&oso->targets)) {
819 if (ofproto->ofproto_class->set_sflow) {
820 return ofproto->ofproto_class->set_sflow(ofproto, oso);
822 return oso ? EOPNOTSUPP : 0;
827 ofproto_set_ipfix(struct ofproto *ofproto,
828 const struct ofproto_ipfix_bridge_exporter_options *bo,
829 const struct ofproto_ipfix_flow_exporter_options *fo,
832 if (ofproto->ofproto_class->set_ipfix) {
833 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
835 return (bo || fo) ? EOPNOTSUPP : 0;
840 ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
842 flow_restore_wait = flow_restore_wait_db;
846 ofproto_get_flow_restore_wait(void)
848 return flow_restore_wait;
852 /* Spanning Tree Protocol (STP) configuration. */
854 /* Configures STP on 'ofproto' using the settings defined in 's'. If
855 * 's' is NULL, disables STP.
857 * Returns 0 if successful, otherwise a positive errno value. */
859 ofproto_set_stp(struct ofproto *ofproto,
860 const struct ofproto_stp_settings *s)
862 return (ofproto->ofproto_class->set_stp
863 ? ofproto->ofproto_class->set_stp(ofproto, s)
867 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
868 * 'enabled' member of 's' is false, then the other members are not
871 * Returns 0 if successful, otherwise a positive errno value. */
873 ofproto_get_stp_status(struct ofproto *ofproto,
874 struct ofproto_stp_status *s)
876 return (ofproto->ofproto_class->get_stp_status
877 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
881 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
882 * in 's'. The caller is responsible for assigning STP port numbers
883 * (using the 'port_num' member in the range of 1 through 255, inclusive)
884 * and ensuring there are no duplicates. If the 's' is NULL, then STP
885 * is disabled on the port.
887 * Returns 0 if successful, otherwise a positive errno value.*/
889 ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
890 const struct ofproto_port_stp_settings *s)
892 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
894 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
895 ofproto->name, ofp_port);
899 return (ofproto->ofproto_class->set_stp_port
900 ? ofproto->ofproto_class->set_stp_port(ofport, s)
904 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
905 * 's'. If the 'enabled' member in 's' is false, then the other members
906 * are not meaningful.
908 * Returns 0 if successful, otherwise a positive errno value.*/
910 ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
911 struct ofproto_port_stp_status *s)
913 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
915 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
916 "port %"PRIu16, ofproto->name, ofp_port);
920 return (ofproto->ofproto_class->get_stp_port_status
921 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
925 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
926 * 's'. If the 'enabled' member in 's' is false, then the other members
927 * are not meaningful.
929 * Returns 0 if successful, otherwise a positive errno value.*/
931 ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
932 struct ofproto_port_stp_stats *s)
934 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
936 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
937 "port %"PRIu16, ofproto->name, ofp_port);
941 return (ofproto->ofproto_class->get_stp_port_stats
942 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
946 /* Rapid Spanning Tree Protocol (RSTP) configuration. */
948 /* Configures RSTP on 'ofproto' using the settings defined in 's'. If
949 * 's' is NULL, disables RSTP.
951 * Returns 0 if successful, otherwise a positive errno value. */
953 ofproto_set_rstp(struct ofproto *ofproto,
954 const struct ofproto_rstp_settings *s)
956 if (!ofproto->ofproto_class->set_rstp) {
959 ofproto->ofproto_class->set_rstp(ofproto, s);
963 /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the
964 * 'enabled' member of 's' is false, then the other members are not
967 * Returns 0 if successful, otherwise a positive errno value. */
969 ofproto_get_rstp_status(struct ofproto *ofproto,
970 struct ofproto_rstp_status *s)
972 if (!ofproto->ofproto_class->get_rstp_status) {
975 ofproto->ofproto_class->get_rstp_status(ofproto, s);
979 /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
980 * in 's'. The caller is responsible for assigning RSTP port numbers
981 * (using the 'port_num' member in the range of 1 through 255, inclusive)
982 * and ensuring there are no duplicates. If the 's' is NULL, then RSTP
983 * is disabled on the port.
985 * Returns 0 if successful, otherwise a positive errno value.*/
987 ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
988 const struct ofproto_port_rstp_settings *s)
990 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
992 VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
993 ofproto->name, ofp_port);
997 if (!ofproto->ofproto_class->set_rstp_port) {
1000 ofproto->ofproto_class->set_rstp_port(ofport, s);
1004 /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
1005 * 's'. If the 'enabled' member in 's' is false, then the other members
1006 * are not meaningful.
1008 * Returns 0 if successful, otherwise a positive errno value.*/
1010 ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1011 struct ofproto_port_rstp_status *s)
1013 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1015 VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
1016 "port %"PRIu16, ofproto->name, ofp_port);
1020 if (!ofproto->ofproto_class->get_rstp_port_status) {
1023 ofproto->ofproto_class->get_rstp_port_status(ofport, s);
1027 /* Queue DSCP configuration. */
1029 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
1030 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
1031 * to implement QoS. Instead, it is used to implement features which require
1032 * knowledge of what queues exist on a port, and some basic information about
1035 * Returns 0 if successful, otherwise a positive errno value. */
1037 ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
1038 const struct ofproto_port_queue *queues,
1041 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1044 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
1045 ofproto->name, ofp_port);
1049 return (ofproto->ofproto_class->set_queues
1050 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
1054 /* LLDP configuration. */
1056 ofproto_port_set_lldp(struct ofproto *ofproto,
1057 ofp_port_t ofp_port,
1058 const struct smap *cfg)
1060 struct ofport *ofport;
1063 ofport = ofproto_get_port(ofproto, ofp_port);
1065 VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16,
1066 ofproto->name, ofp_port);
1069 error = (ofproto->ofproto_class->set_lldp
1070 ? ofproto->ofproto_class->set_lldp(ofport, cfg)
1073 VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)",
1074 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1075 ovs_strerror(error));
1080 ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED,
1081 const struct aa_settings *s)
1083 if (!ofproto->ofproto_class->set_aa) {
1086 ofproto->ofproto_class->set_aa(ofproto, s);
1091 ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux,
1092 const struct aa_mapping_settings *s)
1094 if (!ofproto->ofproto_class->aa_mapping_set) {
1097 ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s);
1102 ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux)
1104 if (!ofproto->ofproto_class->aa_mapping_unset) {
1107 ofproto->ofproto_class->aa_mapping_unset(ofproto, aux);
1112 ofproto_aa_vlan_get_queued(struct ofproto *ofproto,
1113 struct ovs_list *list)
1115 if (!ofproto->ofproto_class->aa_vlan_get_queued) {
1118 ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list);
1123 ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto)
1125 if (!ofproto->ofproto_class->aa_vlan_get_queue_size) {
1128 return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto);
1131 /* Connectivity Fault Management configuration. */
1133 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
1135 ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
1137 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1138 if (ofport && ofproto->ofproto_class->set_cfm) {
1139 ofproto->ofproto_class->set_cfm(ofport, NULL);
1143 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
1144 * basic configuration from the configuration members in 'cfm', and the remote
1145 * maintenance point ID from remote_mpid. Ignores the statistics members of
1148 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
1150 ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
1151 const struct cfm_settings *s)
1153 struct ofport *ofport;
1156 ofport = ofproto_get_port(ofproto, ofp_port);
1158 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
1159 ofproto->name, ofp_port);
1163 /* XXX: For configuration simplicity, we only support one remote_mpid
1164 * outside of the CFM module. It's not clear if this is the correct long
1165 * term solution or not. */
1166 error = (ofproto->ofproto_class->set_cfm
1167 ? ofproto->ofproto_class->set_cfm(ofport, s)
1170 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
1171 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1172 ovs_strerror(error));
1176 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
1177 * 'ofproto' does not have a port 'ofp_port'. */
1179 ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
1180 const struct smap *cfg)
1182 struct ofport *ofport;
1185 ofport = ofproto_get_port(ofproto, ofp_port);
1187 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1188 ofproto->name, ofp_port);
1192 error = (ofproto->ofproto_class->set_bfd
1193 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1196 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1197 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1198 ovs_strerror(error));
1202 /* Checks the status change of BFD on 'ofport'.
1204 * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */
1206 ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
1208 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1209 return (ofport && ofproto->ofproto_class->bfd_status_changed
1210 ? ofproto->ofproto_class->bfd_status_changed(ofport)
1214 /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
1215 * success. Returns a positive errno otherwise. Has no effect if 'ofp_port'
1216 * is not an OpenFlow port in 'ofproto'.
1218 * The caller must provide and own '*status'. */
1220 ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1221 struct smap *status)
1223 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1224 return (ofport && ofproto->ofproto_class->get_bfd_status
1225 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1229 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1230 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1231 * 0 if LACP partner information is not current (generally indicating a
1232 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1234 ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
1236 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1237 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1238 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
1243 ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats)
1245 struct ofproto *ofproto = port->ofproto;
1248 if (ofproto->ofproto_class->port_get_lacp_stats) {
1249 error = ofproto->ofproto_class->port_get_lacp_stats(port, stats);
1259 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1260 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1261 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1262 * configuration plus, if there is more than one slave, a bonding
1265 * If 'aux' is already registered then this function updates its configuration
1266 * to 's'. Otherwise, this function registers a new bundle.
1268 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1271 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1272 const struct ofproto_bundle_settings *s)
1274 return (ofproto->ofproto_class->bundle_set
1275 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1279 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1280 * If no such bundle has been registered, this has no effect. */
1282 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
1284 return ofproto_bundle_register(ofproto, aux, NULL);
1288 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1289 * If 'aux' is already registered then this function updates its configuration
1290 * to 's'. Otherwise, this function registers a new mirror. */
1292 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1293 const struct ofproto_mirror_settings *s)
1295 return (ofproto->ofproto_class->mirror_set
1296 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1300 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1301 * If no mirror has been registered, this has no effect. */
1303 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
1305 return ofproto_mirror_register(ofproto, aux, NULL);
1308 /* Retrieves statistics from mirror associated with client data pointer
1309 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1310 * 'bytes', respectively. If a particular counters is not supported,
1311 * the appropriate argument is set to UINT64_MAX.
1314 ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1315 uint64_t *packets, uint64_t *bytes)
1317 if (!ofproto->ofproto_class->mirror_get_stats) {
1318 *packets = *bytes = UINT64_MAX;
1322 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1326 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1327 * which all packets are flooded, instead of using MAC learning. If
1328 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1330 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1333 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
1335 return (ofproto->ofproto_class->set_flood_vlans
1336 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1340 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1341 * output for a mirror. */
1343 ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
1345 return (ofproto->ofproto_class->is_mirror_output_bundle
1346 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1350 /* Configuration of OpenFlow tables. */
1352 /* Returns the number of OpenFlow tables in 'ofproto'. */
1354 ofproto_get_n_tables(const struct ofproto *ofproto)
1356 return ofproto->n_tables;
1359 /* Returns the number of Controller visible OpenFlow tables
1360 * in 'ofproto'. This number will exclude Hidden tables.
1361 * This funtion's return value should be less or equal to that of
1362 * ofproto_get_n_tables() . */
1364 ofproto_get_n_visible_tables(const struct ofproto *ofproto)
1366 uint8_t n = ofproto->n_tables;
1368 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1369 * if present, are always at the end.) */
1370 while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) {
1377 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1378 * settings from 's'. 'table_id' must be in the range 0 through the number of
1379 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1381 * For read-only tables, only the name may be configured. */
1383 ofproto_configure_table(struct ofproto *ofproto, int table_id,
1384 const struct ofproto_table_settings *s)
1386 struct oftable *table;
1388 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
1389 table = &ofproto->tables[table_id];
1391 oftable_set_name(table, s->name);
1393 if (table->flags & OFTABLE_READONLY) {
1398 oftable_enable_eviction(table, s->groups, s->n_groups);
1400 oftable_disable_eviction(table);
1403 table->max_flows = s->max_flows;
1405 if (classifier_set_prefix_fields(&table->cls,
1406 s->prefix_fields, s->n_prefix_fields)) {
1407 /* XXX: Trigger revalidation. */
1410 ovs_mutex_lock(&ofproto_mutex);
1411 evict_rules_from_table(table, 0);
1412 ovs_mutex_unlock(&ofproto_mutex);
1416 ofproto_has_snoops(const struct ofproto *ofproto)
1418 return connmgr_has_snoops(ofproto->connmgr);
1422 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
1424 connmgr_get_snoops(ofproto->connmgr, snoops);
1427 /* Deletes 'rule' from 'ofproto'.
1429 * Within an ofproto implementation, this function allows an ofproto
1430 * implementation to destroy any rules that remain when its ->destruct()
1431 * function is called. This function is not suitable for use elsewhere in an
1432 * ofproto implementation.
1434 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1435 * Cycle" in ofproto-provider.h. */
1437 ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
1438 OVS_EXCLUDED(ofproto_mutex)
1440 /* This skips the ofmonitor and flow-removed notifications because the
1441 * switch is being deleted and any OpenFlow channels have been or soon will
1443 ovs_mutex_lock(&ofproto_mutex);
1444 oftable_remove_rule(rule);
1445 ofproto->ofproto_class->rule_delete(rule);
1446 ovs_mutex_unlock(&ofproto_mutex);
1450 ofproto_flush__(struct ofproto *ofproto)
1451 OVS_EXCLUDED(ofproto_mutex)
1453 struct oftable *table;
1455 /* This will flush all datapath flows. */
1456 if (ofproto->ofproto_class->flush) {
1457 ofproto->ofproto_class->flush(ofproto);
1460 /* XXX: There is a small race window here, where new datapath flows can be
1461 * created by upcall handlers based on the existing flow table. We can not
1462 * call ofproto class flush while holding 'ofproto_mutex' to prevent this,
1463 * as then we could deadlock on syncing with the handler threads waiting on
1464 * the same mutex. */
1466 ovs_mutex_lock(&ofproto_mutex);
1467 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1468 struct rule_collection rules;
1471 if (table->flags & OFTABLE_HIDDEN) {
1475 rule_collection_init(&rules);
1477 CLS_FOR_EACH (rule, cr, &table->cls) {
1478 rule_collection_add(&rules, rule);
1480 delete_flows__(&rules, OFPRR_DELETE, NULL);
1481 rule_collection_destroy(&rules);
1483 /* XXX: Concurrent handler threads may insert new learned flows based on
1484 * learn actions of the now deleted flows right after we release
1485 * 'ofproto_mutex'. */
1486 ovs_mutex_unlock(&ofproto_mutex);
1489 static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1492 ofproto_destroy__(struct ofproto *ofproto)
1493 OVS_EXCLUDED(ofproto_mutex)
1495 struct oftable *table;
1497 destroy_rule_executes(ofproto);
1498 delete_group(ofproto, OFPG_ALL);
1500 guarded_list_destroy(&ofproto->rule_executes);
1501 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1502 hmap_destroy(&ofproto->groups);
1504 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1505 free(ofproto->name);
1506 free(ofproto->type);
1507 free(ofproto->mfr_desc);
1508 free(ofproto->hw_desc);
1509 free(ofproto->sw_desc);
1510 free(ofproto->serial_desc);
1511 free(ofproto->dp_desc);
1512 hmap_destroy(&ofproto->ports);
1513 hmap_destroy(&ofproto->ofport_usage);
1514 shash_destroy(&ofproto->port_by_name);
1515 simap_destroy(&ofproto->ofp_requests);
1517 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1518 oftable_destroy(table);
1520 free(ofproto->tables);
1522 ovs_assert(hindex_is_empty(&ofproto->cookies));
1523 hindex_destroy(&ofproto->cookies);
1525 ovs_assert(hmap_is_empty(&ofproto->learned_cookies));
1526 hmap_destroy(&ofproto->learned_cookies);
1528 free(ofproto->vlan_bitmap);
1530 ofproto->ofproto_class->dealloc(ofproto);
1534 ofproto_destroy(struct ofproto *p)
1535 OVS_EXCLUDED(ofproto_mutex)
1537 struct ofport *ofport, *next_ofport;
1538 struct ofport_usage *usage, *next_usage;
1545 meter_delete(p, 1, p->meter_features.max_meters);
1546 p->meter_features.max_meters = 0;
1552 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
1553 ofport_destroy(ofport);
1556 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1557 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1561 p->ofproto_class->destruct(p);
1563 /* We should not postpone this because it involves deleting a listening
1564 * socket which we may want to reopen soon. 'connmgr' should not be used
1565 * by other threads */
1566 connmgr_destroy(p->connmgr);
1568 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1569 ovsrcu_postpone(ofproto_destroy__, p);
1572 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1573 * kernel datapath, for example, this destroys the datapath in the kernel, and
1574 * with the netdev-based datapath, it tears down the data structures that
1575 * represent the datapath.
1577 * The datapath should not be currently open as an ofproto. */
1579 ofproto_delete(const char *name, const char *type)
1581 const struct ofproto_class *class = ofproto_class_find__(type);
1582 return (!class ? EAFNOSUPPORT
1583 : !class->del ? EACCES
1584 : class->del(type, name));
1588 process_port_change(struct ofproto *ofproto, int error, char *devname)
1590 if (error == ENOBUFS) {
1591 reinit_ports(ofproto);
1592 } else if (!error) {
1593 update_port(ofproto, devname);
1599 ofproto_type_run(const char *datapath_type)
1601 const struct ofproto_class *class;
1604 datapath_type = ofproto_normalize_type(datapath_type);
1605 class = ofproto_class_find__(datapath_type);
1607 error = class->type_run ? class->type_run(datapath_type) : 0;
1608 if (error && error != EAGAIN) {
1609 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
1610 datapath_type, ovs_strerror(error));
1616 ofproto_type_wait(const char *datapath_type)
1618 const struct ofproto_class *class;
1620 datapath_type = ofproto_normalize_type(datapath_type);
1621 class = ofproto_class_find__(datapath_type);
1623 if (class->type_wait) {
1624 class->type_wait(datapath_type);
1629 ofproto_run(struct ofproto *p)
1634 error = p->ofproto_class->run(p);
1635 if (error && error != EAGAIN) {
1636 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
1639 run_rule_executes(p);
1641 /* Restore the eviction group heap invariant occasionally. */
1642 if (p->eviction_group_timer < time_msec()) {
1645 p->eviction_group_timer = time_msec() + 1000;
1647 for (i = 0; i < p->n_tables; i++) {
1648 struct oftable *table = &p->tables[i];
1649 struct eviction_group *evg;
1652 if (!table->eviction_fields) {
1656 if (classifier_count(&table->cls) > 100000) {
1657 static struct vlog_rate_limit count_rl =
1658 VLOG_RATE_LIMIT_INIT(1, 1);
1659 VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
1660 " number of rules: %d", i,
1661 classifier_count(&table->cls));
1664 ovs_mutex_lock(&ofproto_mutex);
1665 CLS_FOR_EACH (rule, cr, &table->cls) {
1666 if (rule->idle_timeout || rule->hard_timeout) {
1667 if (!rule->eviction_group) {
1668 eviction_group_add_rule(rule);
1670 heap_raw_change(&rule->evg_node,
1671 rule_eviction_priority(p, rule));
1676 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1677 heap_rebuild(&evg->rules);
1679 ovs_mutex_unlock(&ofproto_mutex);
1683 if (p->ofproto_class->port_poll) {
1686 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1687 process_port_change(p, error, devname);
1691 new_seq = seq_read(connectivity_seq_get());
1692 if (new_seq != p->change_seq) {
1693 struct sset devnames;
1694 const char *devname;
1695 struct ofport *ofport;
1697 /* Update OpenFlow port status for any port whose netdev has changed.
1699 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1700 * destroyed, so it's not safe to update ports directly from the
1701 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1702 * need this two-phase approach. */
1703 sset_init(&devnames);
1704 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1705 uint64_t port_change_seq;
1707 port_change_seq = netdev_get_change_seq(ofport->netdev);
1708 if (ofport->change_seq != port_change_seq) {
1709 ofport->change_seq = port_change_seq;
1710 sset_add(&devnames, netdev_get_name(ofport->netdev));
1713 SSET_FOR_EACH (devname, &devnames) {
1714 update_port(p, devname);
1716 sset_destroy(&devnames);
1718 p->change_seq = new_seq;
1721 connmgr_run(p->connmgr, handle_openflow);
1727 ofproto_wait(struct ofproto *p)
1729 p->ofproto_class->wait(p);
1730 if (p->ofproto_class->port_poll_wait) {
1731 p->ofproto_class->port_poll_wait(p);
1733 seq_wait(connectivity_seq_get(), p->change_seq);
1734 connmgr_wait(p->connmgr);
1738 ofproto_is_alive(const struct ofproto *p)
1740 return connmgr_has_controllers(p->connmgr);
1743 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1744 * memory_report(). */
1746 ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1748 const struct oftable *table;
1749 unsigned int n_rules;
1751 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
1754 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1755 n_rules += classifier_count(&table->cls);
1757 simap_increase(usage, "rules", n_rules);
1759 if (ofproto->ofproto_class->get_memory_usage) {
1760 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1763 connmgr_get_memory_usage(ofproto->connmgr, usage);
1767 ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1769 const struct ofproto_class *class;
1771 datapath_type = ofproto_normalize_type(datapath_type);
1772 class = ofproto_class_find__(datapath_type);
1774 if (class && class->type_get_memory_usage) {
1775 class->type_get_memory_usage(datapath_type, usage);
1780 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
1783 connmgr_get_controller_info(ofproto->connmgr, info);
1787 ofproto_free_ofproto_controller_info(struct shash *info)
1789 connmgr_free_controller_info(info);
1792 /* Makes a deep copy of 'old' into 'port'. */
1794 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1796 port->name = xstrdup(old->name);
1797 port->type = xstrdup(old->type);
1798 port->ofp_port = old->ofp_port;
1801 /* Frees memory allocated to members of 'ofproto_port'.
1803 * Do not call this function on an ofproto_port obtained from
1804 * ofproto_port_dump_next(): that function retains ownership of the data in the
1807 ofproto_port_destroy(struct ofproto_port *ofproto_port)
1809 free(ofproto_port->name);
1810 free(ofproto_port->type);
1813 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1815 * This function provides no status indication. An error status for the entire
1816 * dump operation is provided when it is completed by calling
1817 * ofproto_port_dump_done().
1820 ofproto_port_dump_start(struct ofproto_port_dump *dump,
1821 const struct ofproto *ofproto)
1823 dump->ofproto = ofproto;
1824 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1828 /* Attempts to retrieve another port from 'dump', which must have been created
1829 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1830 * 'port' and returns true. On failure, returns false.
1832 * Failure might indicate an actual error or merely that the last port has been
1833 * dumped. An error status for the entire dump operation is provided when it
1834 * is completed by calling ofproto_port_dump_done().
1836 * The ofproto owns the data stored in 'port'. It will remain valid until at
1837 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1838 * ofproto_port_dump_done(). */
1840 ofproto_port_dump_next(struct ofproto_port_dump *dump,
1841 struct ofproto_port *port)
1843 const struct ofproto *ofproto = dump->ofproto;
1849 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1852 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1858 /* Completes port table dump operation 'dump', which must have been created
1859 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1860 * error-free, otherwise a positive errno value describing the problem. */
1862 ofproto_port_dump_done(struct ofproto_port_dump *dump)
1864 const struct ofproto *ofproto = dump->ofproto;
1866 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1869 return dump->error == EOF ? 0 : dump->error;
1872 /* Returns the type to pass to netdev_open() when a datapath of type
1873 * 'datapath_type' has a port of type 'port_type', for a few special
1874 * cases when a netdev type differs from a port type. For example, when
1875 * using the userspace datapath, a port of type "internal" needs to be
1878 * Returns either 'type' itself or a string literal, which must not be
1881 ofproto_port_open_type(const char *datapath_type, const char *port_type)
1883 const struct ofproto_class *class;
1885 datapath_type = ofproto_normalize_type(datapath_type);
1886 class = ofproto_class_find__(datapath_type);
1891 return (class->port_open_type
1892 ? class->port_open_type(datapath_type, port_type)
1896 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1897 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1898 * the port's OpenFlow port number.
1900 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1901 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1902 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1903 * 'ofp_portp' is non-null). */
1905 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
1906 ofp_port_t *ofp_portp)
1908 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
1911 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1913 const char *netdev_name = netdev_get_name(netdev);
1915 simap_put(&ofproto->ofp_requests, netdev_name,
1916 ofp_to_u16(ofp_port));
1917 update_port(ofproto, netdev_name);
1920 *ofp_portp = OFPP_NONE;
1922 struct ofproto_port ofproto_port;
1924 error = ofproto_port_query_by_name(ofproto,
1925 netdev_get_name(netdev),
1928 *ofp_portp = ofproto_port.ofp_port;
1929 ofproto_port_destroy(&ofproto_port);
1936 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1937 * initializes '*port' appropriately; on failure, returns a positive errno
1940 * The caller owns the data in 'ofproto_port' and must free it with
1941 * ofproto_port_destroy() when it is no longer needed. */
1943 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1944 struct ofproto_port *port)
1948 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1950 memset(port, 0, sizeof *port);
1955 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1956 * Returns 0 if successful, otherwise a positive errno. */
1958 ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
1960 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1961 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
1962 struct simap_node *ofp_request_node;
1965 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
1966 if (ofp_request_node) {
1967 simap_delete(&ofproto->ofp_requests, ofp_request_node);
1970 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
1971 if (!error && ofport) {
1972 /* 'name' is the netdev's name and update_port() is going to close the
1973 * netdev. Just in case update_port() refers to 'name' after it
1974 * destroys 'ofport', make a copy of it around the update_port()
1976 char *devname = xstrdup(name);
1977 update_port(ofproto, devname);
1984 flow_mod_init(struct ofputil_flow_mod *fm,
1985 const struct match *match, int priority,
1986 const struct ofpact *ofpacts, size_t ofpacts_len,
1987 enum ofp_flow_mod_command command)
1989 memset(fm, 0, sizeof *fm);
1991 fm->priority = priority;
1994 fm->modify_cookie = false;
1996 fm->command = command;
1997 fm->idle_timeout = 0;
1998 fm->hard_timeout = 0;
2000 fm->buffer_id = UINT32_MAX;
2001 fm->out_port = OFPP_ANY;
2002 fm->out_group = OFPG_ANY;
2004 fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts);
2005 fm->ofpacts_len = ofpacts_len;
2006 fm->delete_reason = OFPRR_DELETE;
2010 simple_flow_mod(struct ofproto *ofproto,
2011 const struct match *match, int priority,
2012 const struct ofpact *ofpacts, size_t ofpacts_len,
2013 enum ofp_flow_mod_command command)
2015 struct ofputil_flow_mod fm;
2017 flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command);
2019 return handle_flow_mod__(ofproto, &fm, NULL);
2022 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
2023 * performs the 'n_actions' actions in 'actions'. The new flow will not
2026 * If cls_rule->priority is in the range of priorities supported by OpenFlow
2027 * (0...65535, inclusive) then the flow will be visible to OpenFlow
2028 * controllers; otherwise, it will be hidden.
2030 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
2032 * This is a helper function for in-band control and fail-open. */
2034 ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
2036 const struct ofpact *ofpacts, size_t ofpacts_len)
2037 OVS_EXCLUDED(ofproto_mutex)
2039 const struct rule *rule;
2042 /* First do a cheap check whether the rule we're looking for already exists
2043 * with the actions that we want. If it does, then we're done. */
2044 rule = rule_from_cls_rule(classifier_find_match_exactly(
2045 &ofproto->tables[0].cls, match, priority));
2047 const struct rule_actions *actions = rule_get_actions(rule);
2048 must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len,
2049 ofpacts, ofpacts_len);
2054 /* If there's no such rule or the rule doesn't have the actions we want,
2055 * fall back to a executing a full flow mod. We can't optimize this at
2056 * all because we didn't take enough locks above to ensure that the flow
2057 * table didn't already change beneath us. */
2059 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
2060 OFPFC_MODIFY_STRICT);
2064 /* Executes the flow modification specified in 'fm'. Returns 0 on success, or
2065 * an OFPERR_* OpenFlow error code on failure.
2067 * This is a helper function for in-band control and fail-open and the "learn"
2070 ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
2071 OVS_EXCLUDED(ofproto_mutex)
2073 /* Optimize for the most common case of a repeated learn action.
2074 * If an identical flow already exists we only need to update its
2075 * 'modified' time. */
2076 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
2077 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
2078 struct oftable *table = &ofproto->tables[fm->table_id];
2082 rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls,
2086 /* Reading many of the rule fields and writing on 'modified'
2087 * requires the rule->mutex. Also, rule->actions may change
2088 * if rule->mutex is not held. */
2089 const struct rule_actions *actions;
2091 ovs_mutex_lock(&rule->mutex);
2092 actions = rule_get_actions(rule);
2093 if (rule->idle_timeout == fm->idle_timeout
2094 && rule->hard_timeout == fm->hard_timeout
2095 && rule->importance == fm->importance
2096 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
2097 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
2098 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
2099 actions->ofpacts, actions->ofpacts_len)) {
2100 /* Rule already exists and need not change, only update the
2101 modified timestamp. */
2102 rule->modified = time_msec();
2105 ovs_mutex_unlock(&rule->mutex);
2113 return handle_flow_mod__(ofproto, fm, NULL);
2116 /* Searches for a rule with matching criteria exactly equal to 'target' in
2117 * ofproto's table 0 and, if it finds one, deletes it.
2119 * This is a helper function for in-band control and fail-open. */
2121 ofproto_delete_flow(struct ofproto *ofproto,
2122 const struct match *target, int priority)
2123 OVS_EXCLUDED(ofproto_mutex)
2125 struct classifier *cls = &ofproto->tables[0].cls;
2128 /* First do a cheap check whether the rule we're looking for has already
2129 * been deleted. If so, then we're done. */
2130 rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
2136 /* Execute a flow mod. We can't optimize this at all because we didn't
2137 * take enough locks above to ensure that the flow table didn't already
2138 * change beneath us. */
2139 simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT);
2142 /* Delete all of the flows from all of ofproto's flow tables, then reintroduce
2143 * the flows required by in-band control and fail-open. */
2145 ofproto_flush_flows(struct ofproto *ofproto)
2147 COVERAGE_INC(ofproto_flush);
2148 ofproto_flush__(ofproto);
2149 connmgr_flushed(ofproto->connmgr);
2153 reinit_ports(struct ofproto *p)
2155 struct ofproto_port_dump dump;
2156 struct sset devnames;
2157 struct ofport *ofport;
2158 struct ofproto_port ofproto_port;
2159 const char *devname;
2161 COVERAGE_INC(ofproto_reinit_ports);
2163 sset_init(&devnames);
2164 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2165 sset_add(&devnames, netdev_get_name(ofport->netdev));
2167 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2168 sset_add(&devnames, ofproto_port.name);
2171 SSET_FOR_EACH (devname, &devnames) {
2172 update_port(p, devname);
2174 sset_destroy(&devnames);
2178 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2182 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2183 port_idx = port_idx ? port_idx : UINT16_MAX;
2185 if (port_idx >= ofproto->max_ports
2186 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2187 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2188 long long int last_used_at, lru = LLONG_MAX;
2190 /* Search for a free OpenFlow port number. We try not to
2191 * immediately reuse them to prevent problems due to old
2194 * We limit the automatically assigned port numbers to the lower half
2195 * of the port range, to reserve the upper half for assignment by
2198 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2199 ofproto->alloc_port_no = 1;
2201 last_used_at = ofport_get_usage(ofproto,
2202 u16_to_ofp(ofproto->alloc_port_no));
2203 if (!last_used_at) {
2204 port_idx = ofproto->alloc_port_no;
2206 } else if ( last_used_at < time_msec() - 60*60*1000) {
2207 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2208 * more than an hour ago, consider it usable. */
2209 ofport_remove_usage(ofproto,
2210 u16_to_ofp(ofproto->alloc_port_no));
2211 port_idx = ofproto->alloc_port_no;
2213 } else if (last_used_at < lru) {
2215 lru_ofport = ofproto->alloc_port_no;
2218 if (ofproto->alloc_port_no == end_port_no) {
2220 port_idx = lru_ofport;
2227 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2228 return u16_to_ofp(port_idx);
2232 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2234 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2235 ofport_set_usage(ofproto, ofp_port, time_msec());
2239 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2240 * pointer if the netdev cannot be opened. On success, also fills in
2242 static struct netdev *
2243 ofport_open(struct ofproto *ofproto,
2244 struct ofproto_port *ofproto_port,
2245 struct ofputil_phy_port *pp)
2247 enum netdev_flags flags;
2248 struct netdev *netdev;
2251 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2253 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2254 "cannot be opened (%s)",
2256 ofproto_port->name, ofproto_port->ofp_port,
2257 ofproto_port->name, ovs_strerror(error));
2261 if (ofproto_port->ofp_port == OFPP_NONE) {
2262 if (!strcmp(ofproto->name, ofproto_port->name)) {
2263 ofproto_port->ofp_port = OFPP_LOCAL;
2265 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2266 ofproto_port->name);
2269 pp->port_no = ofproto_port->ofp_port;
2270 netdev_get_etheraddr(netdev, pp->hw_addr);
2271 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2272 netdev_get_flags(netdev, &flags);
2273 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2274 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2275 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2276 &pp->supported, &pp->peer);
2277 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2278 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2283 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2284 * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are
2287 ofport_equal(const struct ofputil_phy_port *a,
2288 const struct ofputil_phy_port *b)
2290 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2291 && a->state == b->state
2292 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2293 && a->curr == b->curr
2294 && a->advertised == b->advertised
2295 && a->supported == b->supported
2296 && a->peer == b->peer
2297 && a->curr_speed == b->curr_speed
2298 && a->max_speed == b->max_speed);
2301 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2302 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2303 * one with the same name or port number). */
2305 ofport_install(struct ofproto *p,
2306 struct netdev *netdev, const struct ofputil_phy_port *pp)
2308 const char *netdev_name = netdev_get_name(netdev);
2309 struct ofport *ofport;
2312 /* Create ofport. */
2313 ofport = p->ofproto_class->port_alloc();
2318 ofport->ofproto = p;
2319 ofport->netdev = netdev;
2320 ofport->change_seq = netdev_get_change_seq(netdev);
2322 ofport->ofp_port = pp->port_no;
2323 ofport->created = time_msec();
2325 /* Add port to 'p'. */
2326 hmap_insert(&p->ports, &ofport->hmap_node,
2327 hash_ofp_port(ofport->ofp_port));
2328 shash_add(&p->port_by_name, netdev_name, ofport);
2330 update_mtu(p, ofport);
2332 /* Let the ofproto_class initialize its private data. */
2333 error = p->ofproto_class->port_construct(ofport);
2337 connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD);
2341 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2342 p->name, netdev_name, ovs_strerror(error));
2344 ofport_destroy__(ofport);
2346 netdev_close(netdev);
2350 /* Removes 'ofport' from 'p' and destroys it. */
2352 ofport_remove(struct ofport *ofport)
2354 connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp,
2356 ofport_destroy(ofport);
2359 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2362 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2364 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2366 ofport_remove(port);
2370 /* Updates 'port' with new 'pp' description.
2372 * Does not handle a name or port number change. The caller must implement
2373 * such a change as a delete followed by an add. */
2375 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2377 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2378 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2379 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2380 port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN)
2381 | (pp->state & OFPUTIL_PS_LINK_DOWN));
2382 port->pp.curr = pp->curr;
2383 port->pp.advertised = pp->advertised;
2384 port->pp.supported = pp->supported;
2385 port->pp.peer = pp->peer;
2386 port->pp.curr_speed = pp->curr_speed;
2387 port->pp.max_speed = pp->max_speed;
2389 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2390 &port->pp, OFPPR_MODIFY);
2393 /* Update OpenFlow 'state' in 'port' and notify controller. */
2395 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2397 if (port->pp.state != state) {
2398 port->pp.state = state;
2399 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2400 &port->pp, OFPPR_MODIFY);
2405 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2407 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2409 if (port->ofproto->ofproto_class->set_realdev) {
2410 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2412 if (port->ofproto->ofproto_class->set_stp_port) {
2413 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2415 if (port->ofproto->ofproto_class->set_rstp_port) {
2416 port->ofproto->ofproto_class->set_rstp_port(port, NULL);
2418 if (port->ofproto->ofproto_class->set_cfm) {
2419 port->ofproto->ofproto_class->set_cfm(port, NULL);
2421 if (port->ofproto->ofproto_class->bundle_remove) {
2422 port->ofproto->ofproto_class->bundle_remove(port);
2428 ofport_destroy__(struct ofport *port)
2430 struct ofproto *ofproto = port->ofproto;
2431 const char *name = netdev_get_name(port->netdev);
2433 hmap_remove(&ofproto->ports, &port->hmap_node);
2434 shash_delete(&ofproto->port_by_name,
2435 shash_find(&ofproto->port_by_name, name));
2437 netdev_close(port->netdev);
2438 ofproto->ofproto_class->port_dealloc(port);
2442 ofport_destroy(struct ofport *port)
2445 dealloc_ofp_port(port->ofproto, port->ofp_port);
2446 port->ofproto->ofproto_class->port_destruct(port);
2447 ofport_destroy__(port);
2452 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2454 struct ofport *port;
2456 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2458 if (port->ofp_port == ofp_port) {
2465 static long long int
2466 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2468 struct ofport_usage *usage;
2470 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2471 &ofproto->ofport_usage) {
2472 if (usage->ofp_port == ofp_port) {
2473 return usage->last_used;
2480 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2481 long long int last_used)
2483 struct ofport_usage *usage;
2484 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2485 &ofproto->ofport_usage) {
2486 if (usage->ofp_port == ofp_port) {
2487 usage->last_used = last_used;
2491 ovs_assert(last_used == LLONG_MAX);
2493 usage = xmalloc(sizeof *usage);
2494 usage->ofp_port = ofp_port;
2495 usage->last_used = last_used;
2496 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2497 hash_ofp_port(ofp_port));
2501 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2503 struct ofport_usage *usage;
2504 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2505 &ofproto->ofport_usage) {
2506 if (usage->ofp_port == ofp_port) {
2507 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2515 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2517 struct ofproto *ofproto = port->ofproto;
2520 if (ofproto->ofproto_class->port_get_stats) {
2521 error = ofproto->ofproto_class->port_get_stats(port, stats);
2530 update_port(struct ofproto *ofproto, const char *name)
2532 struct ofproto_port ofproto_port;
2533 struct ofputil_phy_port pp;
2534 struct netdev *netdev;
2535 struct ofport *port;
2537 COVERAGE_INC(ofproto_update_port);
2539 /* Fetch 'name''s location and properties from the datapath. */
2540 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2541 ? ofport_open(ofproto, &ofproto_port, &pp)
2545 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2546 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2547 struct netdev *old_netdev = port->netdev;
2549 /* 'name' hasn't changed location. Any properties changed? */
2550 if (!ofport_equal(&port->pp, &pp)) {
2551 ofport_modified(port, &pp);
2554 update_mtu(ofproto, port);
2556 /* Install the newly opened netdev in case it has changed.
2557 * Don't close the old netdev yet in case port_modified has to
2558 * remove a retained reference to it.*/
2559 port->netdev = netdev;
2560 port->change_seq = netdev_get_change_seq(netdev);
2562 if (port->ofproto->ofproto_class->port_modified) {
2563 port->ofproto->ofproto_class->port_modified(port);
2566 netdev_close(old_netdev);
2568 /* If 'port' is nonnull then its name differs from 'name' and thus
2569 * we should delete it. If we think there's a port named 'name'
2570 * then its port number must be wrong now so delete it too. */
2572 ofport_remove(port);
2574 ofport_remove_with_name(ofproto, name);
2575 ofport_install(ofproto, netdev, &pp);
2578 /* Any port named 'name' is gone now. */
2579 ofport_remove_with_name(ofproto, name);
2581 ofproto_port_destroy(&ofproto_port);
2585 init_ports(struct ofproto *p)
2587 struct ofproto_port_dump dump;
2588 struct ofproto_port ofproto_port;
2589 struct shash_node *node, *next;
2591 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2592 const char *name = ofproto_port.name;
2594 if (shash_find(&p->port_by_name, name)) {
2595 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2598 struct ofputil_phy_port pp;
2599 struct netdev *netdev;
2601 /* Check if an OpenFlow port number had been requested. */
2602 node = shash_find(&init_ofp_ports, name);
2604 const struct iface_hint *iface_hint = node->data;
2605 simap_put(&p->ofp_requests, name,
2606 ofp_to_u16(iface_hint->ofp_port));
2609 netdev = ofport_open(p, &ofproto_port, &pp);
2611 ofport_install(p, netdev, &pp);
2612 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2613 p->alloc_port_no = MAX(p->alloc_port_no,
2614 ofp_to_u16(ofproto_port.ofp_port));
2620 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2621 struct iface_hint *iface_hint = node->data;
2623 if (!strcmp(iface_hint->br_name, p->name)) {
2624 free(iface_hint->br_name);
2625 free(iface_hint->br_type);
2627 shash_delete(&init_ofp_ports, node);
2634 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2635 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2637 find_min_mtu(struct ofproto *p)
2639 struct ofport *ofport;
2642 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2643 struct netdev *netdev = ofport->netdev;
2646 /* Skip any internal ports, since that's what we're trying to
2648 if (!strcmp(netdev_get_type(netdev), "internal")) {
2652 if (netdev_get_mtu(netdev, &dev_mtu)) {
2655 if (!mtu || dev_mtu < mtu) {
2660 return mtu ? mtu: ETH_PAYLOAD_MAX;
2663 /* Update MTU of all datapath devices on 'p' to the minimum of the
2664 * non-datapath ports in event of 'port' added or changed. */
2666 update_mtu(struct ofproto *p, struct ofport *port)
2668 struct ofport *ofport;
2669 struct netdev *netdev = port->netdev;
2670 int dev_mtu, old_min;
2672 if (netdev_get_mtu(netdev, &dev_mtu)) {
2676 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2677 if (dev_mtu > p->min_mtu) {
2678 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2679 dev_mtu = p->min_mtu;
2682 port->mtu = dev_mtu;
2686 /* For non-internal port find new min mtu. */
2687 old_min = p->min_mtu;
2688 port->mtu = dev_mtu;
2689 p->min_mtu = find_min_mtu(p);
2690 if (p->min_mtu == old_min) {
2694 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2695 struct netdev *netdev = ofport->netdev;
2697 if (!strcmp(netdev_get_type(netdev), "internal")) {
2698 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2699 ofport->mtu = p->min_mtu;
2706 ofproto_rule_destroy__(struct rule *rule)
2707 OVS_NO_THREAD_SAFETY_ANALYSIS
2709 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2710 rule_actions_destroy(rule_get_actions(rule));
2711 ovs_mutex_destroy(&rule->mutex);
2712 rule->ofproto->ofproto_class->rule_dealloc(rule);
2715 /* Create a new rule based on attributes in 'fm', match in 'cr', and
2716 * 'table_id'. Note that the rule is NOT inserted into a any data structures
2717 * yet. Takes ownership of 'cr'. */
2719 ofproto_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
2720 struct cls_rule *cr, uint8_t table_id,
2721 struct rule **rulep)
2722 OVS_REQUIRES(ofproto_mutex)
2727 /* Allocate new rule. */
2728 rule = ofproto->ofproto_class->rule_alloc();
2730 cls_rule_destroy(cr);
2731 VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name);
2732 return OFPERR_OFPFMFC_UNKNOWN;
2735 /* Initialize base state. */
2736 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
2737 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr);
2738 ovs_refcount_init(&rule->ref_count);
2739 rule->flow_cookie = fm->new_cookie;
2740 rule->created = rule->modified = time_msec();
2742 ovs_mutex_init(&rule->mutex);
2743 ovs_mutex_lock(&rule->mutex);
2744 rule->idle_timeout = fm->idle_timeout;
2745 rule->hard_timeout = fm->hard_timeout;
2746 rule->importance = fm->importance;
2747 ovs_mutex_unlock(&rule->mutex);
2749 *CONST_CAST(uint8_t *, &rule->table_id) = table_id;
2750 rule->flags = fm->flags & OFPUTIL_FF_STATE;
2751 ovsrcu_set_hidden(&rule->actions,
2752 rule_actions_create(fm->ofpacts, fm->ofpacts_len));
2753 list_init(&rule->meter_list_node);
2754 rule->eviction_group = NULL;
2755 list_init(&rule->expirable);
2756 rule->monitor_flags = 0;
2757 rule->add_seqno = 0;
2758 rule->modify_seqno = 0;
2760 /* Construct rule, initializing derived state. */
2761 error = ofproto->ofproto_class->rule_construct(rule);
2763 ofproto_rule_destroy__(rule);
2772 rule_destroy_cb(struct rule *rule)
2774 rule->ofproto->ofproto_class->rule_destruct(rule);
2775 ofproto_rule_destroy__(rule);
2779 ofproto_rule_ref(struct rule *rule)
2782 ovs_refcount_ref(&rule->ref_count);
2787 ofproto_rule_try_ref(struct rule *rule)
2790 return ovs_refcount_try_ref_rcu(&rule->ref_count);
2795 /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
2796 * ref_count reaches 0.
2798 * Use of RCU allows short term use (between RCU quiescent periods) without
2799 * keeping a reference. A reference must be taken if the rule needs to
2800 * stay around accross the RCU quiescent periods. */
2802 ofproto_rule_unref(struct rule *rule)
2804 if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) {
2805 ovsrcu_postpone(rule_destroy_cb, rule);
2810 ofproto_group_ref(struct ofgroup *group)
2813 ovs_refcount_ref(&group->ref_count);
2818 ofproto_group_unref(struct ofgroup *group)
2820 if (group && ovs_refcount_unref(&group->ref_count) == 1) {
2821 group->ofproto->ofproto_class->group_destruct(group);
2822 ofputil_bucket_list_destroy(&group->buckets);
2823 group->ofproto->ofproto_class->group_dealloc(group);
2827 static uint32_t get_provider_meter_id(const struct ofproto *,
2828 uint32_t of_meter_id);
2830 /* Creates and returns a new 'struct rule_actions', whose actions are a copy
2831 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2832 const struct rule_actions *
2833 rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len)
2835 struct rule_actions *actions;
2837 actions = xmalloc(sizeof *actions + ofpacts_len);
2838 actions->ofpacts_len = ofpacts_len;
2839 actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0;
2840 memcpy(actions->ofpacts, ofpacts, ofpacts_len);
2842 actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL)
2848 /* Free the actions after the RCU quiescent period is reached. */
2850 rule_actions_destroy(const struct rule_actions *actions)
2853 ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions));
2857 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2858 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2860 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2861 OVS_REQUIRES(ofproto_mutex)
2863 if (port == OFPP_ANY) {
2866 const struct rule_actions *actions = rule_get_actions(rule);
2867 return ofpacts_output_to_port(actions->ofpacts,
2868 actions->ofpacts_len, port);
2872 /* Returns true if 'rule' has group and equals group_id. */
2874 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2875 OVS_REQUIRES(ofproto_mutex)
2877 if (group_id == OFPG_ANY) {
2880 const struct rule_actions *actions = rule_get_actions(rule);
2881 return ofpacts_output_to_group(actions->ofpacts,
2882 actions->ofpacts_len, group_id);
2887 rule_execute_destroy(struct rule_execute *e)
2889 ofproto_rule_unref(e->rule);
2890 list_remove(&e->list_node);
2894 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2895 * by passing them to the ofproto provider. */
2897 run_rule_executes(struct ofproto *ofproto)
2898 OVS_EXCLUDED(ofproto_mutex)
2900 struct rule_execute *e, *next;
2901 struct ovs_list executes;
2903 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2904 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2907 flow_extract(e->packet, &flow);
2908 flow.in_port.ofp_port = e->in_port;
2909 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2911 rule_execute_destroy(e);
2915 /* Destroys and discards all "rule_execute" operations queued up in
2916 * ofproto->rule_executes. */
2918 destroy_rule_executes(struct ofproto *ofproto)
2920 struct rule_execute *e, *next;
2921 struct ovs_list executes;
2923 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2924 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2925 dp_packet_delete(e->packet);
2926 rule_execute_destroy(e);
2931 rule_is_readonly(const struct rule *rule)
2933 const struct oftable *table = &rule->ofproto->tables[rule->table_id];
2934 return (table->flags & OFTABLE_READONLY) != 0;
2938 hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id)
2940 uint64_t cookie = (OVS_FORCE uint64_t) cookie_;
2941 return hash_3words(cookie, cookie >> 32, table_id);
2945 learned_cookies_update_one__(struct ofproto *ofproto,
2946 const struct ofpact_learn *learn,
2947 int delta, struct ovs_list *dead_cookies)
2948 OVS_REQUIRES(ofproto_mutex)
2950 uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id);
2951 struct learned_cookie *c;
2953 HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) {
2954 if (c->cookie == learn->cookie && c->table_id == learn->table_id) {
2956 ovs_assert(c->n >= 0);
2959 hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node);
2960 list_push_back(dead_cookies, &c->u.list_node);
2967 ovs_assert(delta > 0);
2968 c = xmalloc(sizeof *c);
2969 hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash);
2970 c->cookie = learn->cookie;
2971 c->table_id = learn->table_id;
2975 static const struct ofpact_learn *
2976 next_learn_with_delete(const struct rule_actions *actions,
2977 const struct ofpact_learn *start)
2979 const struct ofpact *pos;
2981 for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts;
2982 pos < ofpact_end(actions->ofpacts, actions->ofpacts_len);
2983 pos = ofpact_next(pos)) {
2984 if (pos->type == OFPACT_LEARN) {
2985 const struct ofpact_learn *learn = ofpact_get_LEARN(pos);
2986 if (learn->flags & NX_LEARN_F_DELETE_LEARNED) {
2996 learned_cookies_update__(struct ofproto *ofproto,
2997 const struct rule_actions *actions,
2998 int delta, struct ovs_list *dead_cookies)
2999 OVS_REQUIRES(ofproto_mutex)
3001 if (actions->has_learn_with_delete) {
3002 const struct ofpact_learn *learn;
3004 for (learn = next_learn_with_delete(actions, NULL); learn;
3005 learn = next_learn_with_delete(actions, learn)) {
3006 learned_cookies_update_one__(ofproto, learn, delta, dead_cookies);
3012 learned_cookies_inc(struct ofproto *ofproto,
3013 const struct rule_actions *actions)
3014 OVS_REQUIRES(ofproto_mutex)
3016 learned_cookies_update__(ofproto, actions, +1, NULL);
3020 learned_cookies_dec(struct ofproto *ofproto,
3021 const struct rule_actions *actions,
3022 struct ovs_list *dead_cookies)
3023 OVS_REQUIRES(ofproto_mutex)
3025 learned_cookies_update__(ofproto, actions, -1, dead_cookies);
3029 learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies)
3030 OVS_REQUIRES(ofproto_mutex)
3032 struct learned_cookie *c;
3034 LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) {
3035 struct rule_criteria criteria;
3036 struct rule_collection rules;
3039 match_init_catchall(&match);
3040 rule_criteria_init(&criteria, c->table_id, &match, 0,
3041 c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY);
3042 rule_criteria_require_rw(&criteria, false);
3043 collect_rules_loose(ofproto, &criteria, &rules);
3044 delete_flows__(&rules, OFPRR_DELETE, NULL);
3045 rule_criteria_destroy(&criteria);
3046 rule_collection_destroy(&rules);
3053 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
3055 ofconn_send_reply(ofconn, make_echo_reply(oh));
3060 query_tables(struct ofproto *ofproto,
3061 struct ofputil_table_features **featuresp,
3062 struct ofputil_table_stats **statsp)
3064 struct mf_bitmap rw_fields = oxm_writable_fields();
3065 struct mf_bitmap match = oxm_matchable_fields();
3066 struct mf_bitmap mask = oxm_maskable_fields();
3068 struct ofputil_table_features *features;
3069 struct ofputil_table_stats *stats;
3072 features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
3073 for (i = 0; i < ofproto->n_tables; i++) {
3074 struct ofputil_table_features *f = &features[i];
3077 sprintf(f->name, "table%d", i);
3078 f->metadata_match = OVS_BE64_MAX;
3079 f->metadata_write = OVS_BE64_MAX;
3080 atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
3081 f->max_entries = 1000000;
3083 bool more_tables = false;
3084 for (int j = i + 1; j < ofproto->n_tables; j++) {
3085 if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) {
3086 bitmap_set1(f->nonmiss.next, j);
3090 f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
3092 f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
3094 f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
3095 f->nonmiss.write.set_fields = rw_fields;
3096 f->nonmiss.apply = f->nonmiss.write;
3097 f->miss = f->nonmiss;
3101 f->wildcard = match;
3105 stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
3106 for (i = 0; i < ofproto->n_tables; i++) {
3107 struct ofputil_table_stats *s = &stats[i];
3108 struct classifier *cls = &ofproto->tables[i].cls;
3111 s->active_count = classifier_count(cls);
3113 s->active_count -= connmgr_count_hidden_rules(
3121 ofproto->ofproto_class->query_tables(ofproto, features, stats);
3123 for (i = 0; i < ofproto->n_tables; i++) {
3124 const struct oftable *table = &ofproto->tables[i];
3125 struct ofputil_table_features *f = &features[i];
3128 ovs_strzcpy(f->name, table->name, sizeof f->name);
3131 if (table->max_flows < f->max_entries) {
3132 f->max_entries = table->max_flows;
3138 query_switch_features(struct ofproto *ofproto,
3139 bool *arp_match_ip, uint64_t *ofpacts)
3141 struct ofputil_table_features *features, *f;
3143 *arp_match_ip = false;
3146 query_tables(ofproto, &features, NULL);
3147 for (f = features; f < &features[ofproto->n_tables]; f++) {
3148 *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
3149 if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
3150 bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
3151 *arp_match_ip = true;
3157 ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
3161 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
3163 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3164 struct ofputil_switch_features features;
3165 struct ofport *port;
3169 query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
3171 features.datapath_id = ofproto->datapath_id;
3172 features.n_buffers = pktbuf_capacity();
3173 features.n_tables = ofproto_get_n_visible_tables(ofproto);
3174 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
3175 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS |
3176 OFPUTIL_C_GROUP_STATS);
3178 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
3180 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
3181 features.auxiliary_id = 0;
3182 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
3184 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3185 ofputil_put_switch_features_port(&port->pp, b);
3188 ofconn_send_reply(ofconn, b);
3193 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
3195 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3196 struct ofp_switch_config *osc;
3197 enum ofp_config_flags flags;
3201 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
3202 osc = ofpbuf_put_uninit(buf, sizeof *osc);
3203 flags = ofproto->frag_handling;
3204 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3205 if (oh->version < OFP13_VERSION
3206 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
3207 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
3209 osc->flags = htons(flags);
3210 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
3211 ofconn_send_reply(ofconn, buf);
3217 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
3219 const struct ofp_switch_config *osc = ofpmsg_body(oh);
3220 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3221 uint16_t flags = ntohs(osc->flags);
3223 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
3224 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
3225 enum ofp_config_flags cur = ofproto->frag_handling;
3226 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
3228 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
3230 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
3231 ofproto->frag_handling = next;
3233 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
3235 ofputil_frag_handling_to_string(next));
3239 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3240 ofconn_set_invalid_ttl_to_controller(ofconn,
3241 (oh->version < OFP13_VERSION
3242 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
3244 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
3249 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3250 * error message code for the caller to propagate upward. Otherwise, returns
3253 * The log message mentions 'msg_type'. */
3255 reject_slave_controller(struct ofconn *ofconn)
3257 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
3258 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
3259 return OFPERR_OFPBRC_IS_SLAVE;
3265 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
3268 * - If they use a meter, then 'ofproto' has that meter configured.
3270 * - If they use any groups, then 'ofproto' has that group configured.
3272 * Returns 0 if successful, otherwise an OpenFlow error. */
3274 ofproto_check_ofpacts(struct ofproto *ofproto,
3275 const struct ofpact ofpacts[], size_t ofpacts_len)
3277 const struct ofpact *a;
3280 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
3281 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
3282 return OFPERR_OFPMMFC_INVALID_METER;
3285 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
3286 if (a->type == OFPACT_GROUP
3287 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
3288 return OFPERR_OFPBAC_BAD_OUT_GROUP;
3296 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
3298 struct ofproto *p = ofconn_get_ofproto(ofconn);
3299 struct ofputil_packet_out po;
3300 struct dp_packet *payload;
3301 uint64_t ofpacts_stub[1024 / 8];
3302 struct ofpbuf ofpacts;
3306 COVERAGE_INC(ofproto_packet_out);
3308 error = reject_slave_controller(ofconn);
3313 /* Decode message. */
3314 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
3315 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
3317 goto exit_free_ofpacts;
3319 if (ofp_to_u16(po.in_port) >= p->max_ports
3320 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
3321 error = OFPERR_OFPBRC_BAD_PORT;
3322 goto exit_free_ofpacts;
3326 if (po.buffer_id != UINT32_MAX) {
3327 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
3328 if (error || !payload) {
3329 goto exit_free_ofpacts;
3332 /* Ensure that the L3 header is 32-bit aligned. */
3333 payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2);
3336 /* Verify actions against packet, then send packet if successful. */
3337 flow_extract(payload, &flow);
3338 flow.in_port.ofp_port = po.in_port;
3339 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
3341 error = p->ofproto_class->packet_out(p, payload, &flow,
3342 po.ofpacts, po.ofpacts_len);
3344 dp_packet_delete(payload);
3347 ofpbuf_uninit(&ofpacts);
3353 update_port_config(struct ofconn *ofconn, struct ofport *port,
3354 enum ofputil_port_config config,
3355 enum ofputil_port_config mask)
3357 enum ofputil_port_config toggle = (config ^ port->pp.config) & mask;
3359 if (toggle & OFPUTIL_PC_PORT_DOWN
3360 && (config & OFPUTIL_PC_PORT_DOWN
3361 ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL)
3362 : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) {
3363 /* We tried to bring the port up or down, but it failed, so don't
3364 * update the "down" bit. */
3365 toggle &= ~OFPUTIL_PC_PORT_DOWN;
3369 enum ofputil_port_config old_config = port->pp.config;
3370 port->pp.config ^= toggle;
3371 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
3372 connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp,
3378 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
3380 struct ofproto *p = ofconn_get_ofproto(ofconn);
3381 struct ofputil_port_mod pm;
3382 struct ofport *port;
3385 error = reject_slave_controller(ofconn);
3390 error = ofputil_decode_port_mod(oh, &pm, false);
3395 port = ofproto_get_port(p, pm.port_no);
3397 return OFPERR_OFPPMFC_BAD_PORT;
3398 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
3399 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3401 update_port_config(ofconn, port, pm.config, pm.mask);
3403 netdev_set_advertisements(port->netdev, pm.advertise);
3410 handle_desc_stats_request(struct ofconn *ofconn,
3411 const struct ofp_header *request)
3413 static const char *default_mfr_desc = "Nicira, Inc.";
3414 static const char *default_hw_desc = "Open vSwitch";
3415 static const char *default_sw_desc = VERSION;
3416 static const char *default_serial_desc = "None";
3417 static const char *default_dp_desc = "None";
3419 struct ofproto *p = ofconn_get_ofproto(ofconn);
3420 struct ofp_desc_stats *ods;
3423 msg = ofpraw_alloc_stats_reply(request, 0);
3424 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3425 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3426 sizeof ods->mfr_desc);
3427 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3428 sizeof ods->hw_desc);
3429 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3430 sizeof ods->sw_desc);
3431 ovs_strlcpy(ods->serial_num,
3432 p->serial_desc ? p->serial_desc : default_serial_desc,
3433 sizeof ods->serial_num);
3434 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3435 sizeof ods->dp_desc);
3436 ofconn_send_reply(ofconn, msg);
3442 handle_table_stats_request(struct ofconn *ofconn,
3443 const struct ofp_header *request)
3445 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3446 struct ofputil_table_features *features;
3447 struct ofputil_table_stats *stats;
3448 struct ofpbuf *reply;
3451 query_tables(ofproto, &features, &stats);
3453 reply = ofputil_encode_table_stats_reply(request);
3454 for (i = 0; i < ofproto->n_tables; i++) {
3455 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3456 ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
3459 ofconn_send_reply(ofconn, reply);
3468 handle_table_features_request(struct ofconn *ofconn,
3469 const struct ofp_header *request)
3471 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3472 struct ofputil_table_features *features;
3473 struct ovs_list replies;
3477 ofpbuf_use_const(&msg, request, ntohs(request->length));
3478 ofpraw_pull_assert(&msg);
3479 if (msg.size || ofpmp_more(request)) {
3480 return OFPERR_OFPTFFC_EPERM;
3483 query_tables(ofproto, &features, NULL);
3485 ofpmp_init(&replies, request);
3486 for (i = 0; i < ofproto->n_tables; i++) {
3487 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3488 ofputil_append_table_features_reply(&features[i], &replies);
3491 ofconn_send_replies(ofconn, &replies);
3499 append_port_stat(struct ofport *port, struct ovs_list *replies)
3501 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3503 calc_duration(port->created, time_msec(),
3504 &ops.duration_sec, &ops.duration_nsec);
3506 /* Intentionally ignore return value, since errors will set
3507 * 'stats' to all-1s, which is correct for OpenFlow, and
3508 * netdev_get_stats() will log errors. */
3509 ofproto_port_get_stats(port, &ops.stats);
3511 ofputil_append_port_stat(replies, &ops);
3515 handle_port_request(struct ofconn *ofconn,
3516 const struct ofp_header *request, ofp_port_t port_no,
3517 void (*cb)(struct ofport *, struct ovs_list *replies))
3519 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3520 struct ofport *port;
3521 struct ovs_list replies;
3523 ofpmp_init(&replies, request);
3524 if (port_no != OFPP_ANY) {
3525 port = ofproto_get_port(ofproto, port_no);
3530 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3535 ofconn_send_replies(ofconn, &replies);
3539 handle_port_stats_request(struct ofconn *ofconn,
3540 const struct ofp_header *request)
3545 error = ofputil_decode_port_stats_request(request, &port_no);
3547 handle_port_request(ofconn, request, port_no, append_port_stat);
3553 append_port_desc(struct ofport *port, struct ovs_list *replies)
3555 ofputil_append_port_desc_stats_reply(&port->pp, replies);
3559 handle_port_desc_stats_request(struct ofconn *ofconn,
3560 const struct ofp_header *request)
3565 error = ofputil_decode_port_desc_stats_request(request, &port_no);
3567 handle_port_request(ofconn, request, port_no, append_port_desc);
3573 hash_cookie(ovs_be64 cookie)
3575 return hash_uint64((OVS_FORCE uint64_t)cookie);
3579 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3580 OVS_REQUIRES(ofproto_mutex)
3582 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3583 hash_cookie(rule->flow_cookie));
3587 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3588 OVS_REQUIRES(ofproto_mutex)
3590 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3594 calc_duration(long long int start, long long int now,
3595 uint32_t *sec, uint32_t *nsec)
3597 long long int msecs = now - start;
3598 *sec = msecs / 1000;
3599 *nsec = (msecs % 1000) * (1000 * 1000);
3602 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3603 * true if 'table_id' is OK, false otherwise. */
3605 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3607 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
3610 static struct oftable *
3611 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3613 struct oftable *table;
3615 for (table = &ofproto->tables[table_id];
3616 table < &ofproto->tables[ofproto->n_tables];
3618 if (!(table->flags & OFTABLE_HIDDEN)) {
3626 static struct oftable *
3627 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3629 if (table_id == 0xff) {
3630 return next_visible_table(ofproto, 0);
3631 } else if (table_id < ofproto->n_tables) {
3632 return &ofproto->tables[table_id];
3638 static struct oftable *
3639 next_matching_table(const struct ofproto *ofproto,
3640 const struct oftable *table, uint8_t table_id)
3642 return (table_id == 0xff
3643 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3647 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3649 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3650 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3652 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3653 * only once, for that table. (This can be used to access tables marked
3656 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3657 * entered at all. (Perhaps you should have validated TABLE_ID with
3658 * check_table_id().)
3660 * All parameters are evaluated multiple times.
3662 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3663 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3665 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3667 /* Initializes 'criteria' in a straightforward way based on the other
3670 * By default, the criteria include flows that are read-only, on the assumption
3671 * that the collected flows won't be modified. Call rule_criteria_require_rw()
3672 * if flows will be modified.
3674 * For "loose" matching, the 'priority' parameter is unimportant and may be
3677 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3678 const struct match *match, int priority,
3679 ovs_be64 cookie, ovs_be64 cookie_mask,
3680 ofp_port_t out_port, uint32_t out_group)
3682 criteria->table_id = table_id;
3683 cls_rule_init(&criteria->cr, match, priority);
3684 criteria->cookie = cookie;
3685 criteria->cookie_mask = cookie_mask;
3686 criteria->out_port = out_port;
3687 criteria->out_group = out_group;
3689 /* We ordinarily want to skip hidden rules, but there has to be a way for
3690 * code internal to OVS to modify and delete them, so if the criteria
3691 * specify a priority that can only be for a hidden flow, then allow hidden
3692 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3693 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3695 criteria->include_hidden = priority > UINT16_MAX;
3697 /* We assume that the criteria are being used to collect flows for reading
3698 * but not modification. Thus, we should collect read-only flows. */
3699 criteria->include_readonly = true;
3702 /* By default, criteria initialized by rule_criteria_init() will match flows
3703 * that are read-only, on the assumption that the collected flows won't be
3704 * modified. Call this function to match only flows that are be modifiable.
3706 * Specify 'can_write_readonly' as false in ordinary circumstances, true if the
3707 * caller has special privileges that allow it to modify even "read-only"
3710 rule_criteria_require_rw(struct rule_criteria *criteria,
3711 bool can_write_readonly)
3713 criteria->include_readonly = can_write_readonly;
3717 rule_criteria_destroy(struct rule_criteria *criteria)
3719 cls_rule_destroy(&criteria->cr);
3723 rule_collection_init(struct rule_collection *rules)
3725 rules->rules = rules->stub;
3727 rules->capacity = ARRAY_SIZE(rules->stub);
3731 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3733 if (rules->n >= rules->capacity) {
3734 size_t old_size, new_size;
3736 old_size = rules->capacity * sizeof *rules->rules;
3737 rules->capacity *= 2;
3738 new_size = rules->capacity * sizeof *rules->rules;
3740 if (rules->rules == rules->stub) {
3741 rules->rules = xmalloc(new_size);
3742 memcpy(rules->rules, rules->stub, old_size);
3744 rules->rules = xrealloc(rules->rules, new_size);
3748 rules->rules[rules->n++] = rule;
3752 rule_collection_ref(struct rule_collection *rules)
3753 OVS_REQUIRES(ofproto_mutex)
3757 for (i = 0; i < rules->n; i++) {
3758 ofproto_rule_ref(rules->rules[i]);
3763 rule_collection_unref(struct rule_collection *rules)
3767 for (i = 0; i < rules->n; i++) {
3768 ofproto_rule_unref(rules->rules[i]);
3773 rule_collection_destroy(struct rule_collection *rules)
3775 if (rules->rules != rules->stub) {
3779 /* Make repeated destruction harmless. */
3780 rule_collection_init(rules);
3783 /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This
3784 * function verifies most of the criteria in 'c' itself, but the caller must
3785 * check 'c->cr' itself.
3787 * Rules that have already been marked as 'to_be_removed' are not collected.
3789 * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and
3790 * 'c' only includes modifiable rules). */
3792 collect_rule(struct rule *rule, const struct rule_criteria *c,
3793 struct rule_collection *rules, size_t *n_readonly)
3794 OVS_REQUIRES(ofproto_mutex)
3796 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3797 && ofproto_rule_has_out_port(rule, c->out_port)
3798 && ofproto_rule_has_out_group(rule, c->out_group)
3799 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)
3800 && (!rule_is_hidden(rule) || c->include_hidden)
3801 && !rule->cr.to_be_removed) {
3802 /* Rule matches all the criteria... */
3803 if (!rule_is_readonly(rule) || c->include_readonly) {
3805 rule_collection_add(rules, rule);
3807 /* ...except it's read-only. */
3813 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3814 * on classifiers rules are done in the "loose" way required for OpenFlow
3815 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3818 * Returns 0 on success, otherwise an OpenFlow error code. */
3820 collect_rules_loose(struct ofproto *ofproto,
3821 const struct rule_criteria *criteria,
3822 struct rule_collection *rules)
3823 OVS_REQUIRES(ofproto_mutex)
3825 struct oftable *table;
3826 enum ofperr error = 0;
3827 size_t n_readonly = 0;
3829 rule_collection_init(rules);
3831 if (!check_table_id(ofproto, criteria->table_id)) {
3832 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3836 if (criteria->cookie_mask == OVS_BE64_MAX) {
3839 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3840 hash_cookie(criteria->cookie),
3841 &ofproto->cookies) {
3842 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
3843 collect_rule(rule, criteria, rules, &n_readonly);
3847 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3850 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) {
3851 collect_rule(rule, criteria, rules, &n_readonly);
3857 if (!error && !rules->n && n_readonly) {
3858 /* We didn't find any rules to modify. We did find some read-only
3859 * rules that we're not allowed to modify, so report that. */
3860 error = OFPERR_OFPBRC_EPERM;
3863 rule_collection_destroy(rules);
3868 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3869 * on classifiers rules are done in the "strict" way required for OpenFlow
3870 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3871 * rules on list 'rules'.
3873 * Returns 0 on success, otherwise an OpenFlow error code. */
3875 collect_rules_strict(struct ofproto *ofproto,
3876 const struct rule_criteria *criteria,
3877 struct rule_collection *rules)
3878 OVS_REQUIRES(ofproto_mutex)
3880 struct oftable *table;
3881 size_t n_readonly = 0;
3882 enum ofperr error = 0;
3884 rule_collection_init(rules);
3886 if (!check_table_id(ofproto, criteria->table_id)) {
3887 error = OFPERR_OFPBRC_BAD_TABLE_ID;
3891 if (criteria->cookie_mask == OVS_BE64_MAX) {
3894 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3895 hash_cookie(criteria->cookie),
3896 &ofproto->cookies) {
3897 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
3898 collect_rule(rule, criteria, rules, &n_readonly);
3902 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
3905 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3906 &table->cls, &criteria->cr));
3908 collect_rule(rule, criteria, rules, &n_readonly);
3914 if (!error && !rules->n && n_readonly) {
3915 /* We didn't find any rules to modify. We did find some read-only
3916 * rules that we're not allowed to modify, so report that. */
3917 error = OFPERR_OFPBRC_EPERM;
3920 rule_collection_destroy(rules);
3925 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3926 * forced into the range of a uint16_t. */
3928 age_secs(long long int age_ms)
3930 return (age_ms < 0 ? 0
3931 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
3932 : (unsigned int) age_ms / 1000);
3936 handle_flow_stats_request(struct ofconn *ofconn,
3937 const struct ofp_header *request)
3938 OVS_EXCLUDED(ofproto_mutex)
3940 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3941 struct ofputil_flow_stats_request fsr;
3942 struct rule_criteria criteria;
3943 struct rule_collection rules;
3944 struct ovs_list replies;
3948 error = ofputil_decode_flow_stats_request(&fsr, request);
3953 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
3954 fsr.cookie_mask, fsr.out_port, fsr.out_group);
3956 ovs_mutex_lock(&ofproto_mutex);
3957 error = collect_rules_loose(ofproto, &criteria, &rules);
3958 rule_criteria_destroy(&criteria);
3960 rule_collection_ref(&rules);
3962 ovs_mutex_unlock(&ofproto_mutex);
3968 ofpmp_init(&replies, request);
3969 for (i = 0; i < rules.n; i++) {
3970 struct rule *rule = rules.rules[i];
3971 long long int now = time_msec();
3972 struct ofputil_flow_stats fs;
3973 long long int created, used, modified;
3974 const struct rule_actions *actions;
3975 enum ofputil_flow_mod_flags flags;
3977 ovs_mutex_lock(&rule->mutex);
3978 fs.cookie = rule->flow_cookie;
3979 fs.idle_timeout = rule->idle_timeout;
3980 fs.hard_timeout = rule->hard_timeout;
3981 fs.importance = rule->importance;
3982 created = rule->created;
3983 modified = rule->modified;
3984 actions = rule_get_actions(rule);
3985 flags = rule->flags;
3986 ovs_mutex_unlock(&rule->mutex);
3988 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
3989 &fs.byte_count, &used);
3991 minimatch_expand(&rule->cr.match, &fs.match);
3992 fs.table_id = rule->table_id;
3993 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
3994 fs.priority = rule->cr.priority;
3995 fs.idle_age = age_secs(now - used);
3996 fs.hard_age = age_secs(now - modified);
3997 fs.ofpacts = actions->ofpacts;
3998 fs.ofpacts_len = actions->ofpacts_len;
4001 ofputil_append_flow_stats_reply(&fs, &replies);
4004 rule_collection_unref(&rules);
4005 rule_collection_destroy(&rules);
4007 ofconn_send_replies(ofconn, &replies);
4013 flow_stats_ds(struct rule *rule, struct ds *results)
4015 uint64_t packet_count, byte_count;
4016 const struct rule_actions *actions;
4017 long long int created, used;
4019 rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4020 &byte_count, &used);
4022 ovs_mutex_lock(&rule->mutex);
4023 actions = rule_get_actions(rule);
4024 created = rule->created;
4025 ovs_mutex_unlock(&rule->mutex);
4027 if (rule->table_id != 0) {
4028 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
4030 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
4031 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
4032 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
4033 cls_rule_format(&rule->cr, results);
4034 ds_put_char(results, ',');
4036 ds_put_cstr(results, "actions=");
4037 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
4039 ds_put_cstr(results, "\n");
4042 /* Adds a pretty-printed description of all flows to 'results', including
4043 * hidden flows (e.g., set up by in-band control). */
4045 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
4047 struct oftable *table;
4049 OFPROTO_FOR_EACH_TABLE (table, p) {
4052 CLS_FOR_EACH (rule, cr, &table->cls) {
4053 flow_stats_ds(rule, results);
4058 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
4059 * '*engine_type' and '*engine_id', respectively. */
4061 ofproto_get_netflow_ids(const struct ofproto *ofproto,
4062 uint8_t *engine_type, uint8_t *engine_id)
4064 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
4067 /* Checks the status change of CFM on 'ofport'.
4069 * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */
4071 ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
4073 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4074 return (ofport && ofproto->ofproto_class->cfm_status_changed
4075 ? ofproto->ofproto_class->cfm_status_changed(ofport)
4079 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
4080 * Returns 0 if the port's CFM status was successfully stored into
4081 * '*status'. Returns positive errno if the port did not have CFM
4084 * The caller must provide and own '*status', and must free 'status->rmps'.
4085 * '*status' is indeterminate if the return value is non-zero. */
4087 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
4088 struct cfm_status *status)
4090 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4091 return (ofport && ofproto->ofproto_class->get_cfm_status
4092 ? ofproto->ofproto_class->get_cfm_status(ofport, status)
4097 handle_aggregate_stats_request(struct ofconn *ofconn,
4098 const struct ofp_header *oh)
4099 OVS_EXCLUDED(ofproto_mutex)
4101 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4102 struct ofputil_flow_stats_request request;
4103 struct ofputil_aggregate_stats stats;
4104 bool unknown_packets, unknown_bytes;
4105 struct rule_criteria criteria;
4106 struct rule_collection rules;
4107 struct ofpbuf *reply;
4111 error = ofputil_decode_flow_stats_request(&request, oh);
4116 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
4117 request.cookie, request.cookie_mask,
4118 request.out_port, request.out_group);
4120 ovs_mutex_lock(&ofproto_mutex);
4121 error = collect_rules_loose(ofproto, &criteria, &rules);
4122 rule_criteria_destroy(&criteria);
4124 rule_collection_ref(&rules);
4126 ovs_mutex_unlock(&ofproto_mutex);
4132 memset(&stats, 0, sizeof stats);
4133 unknown_packets = unknown_bytes = false;
4134 for (i = 0; i < rules.n; i++) {
4135 struct rule *rule = rules.rules[i];
4136 uint64_t packet_count;
4137 uint64_t byte_count;
4140 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4141 &byte_count, &used);
4143 if (packet_count == UINT64_MAX) {
4144 unknown_packets = true;
4146 stats.packet_count += packet_count;
4149 if (byte_count == UINT64_MAX) {
4150 unknown_bytes = true;
4152 stats.byte_count += byte_count;
4157 if (unknown_packets) {
4158 stats.packet_count = UINT64_MAX;
4160 if (unknown_bytes) {
4161 stats.byte_count = UINT64_MAX;
4164 rule_collection_unref(&rules);
4165 rule_collection_destroy(&rules);
4167 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
4168 ofconn_send_reply(ofconn, reply);
4173 struct queue_stats_cbdata {
4174 struct ofport *ofport;
4175 struct ovs_list replies;
4180 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
4181 const struct netdev_queue_stats *stats)
4183 struct ofputil_queue_stats oqs;
4185 oqs.port_no = cbdata->ofport->pp.port_no;
4186 oqs.queue_id = queue_id;
4187 oqs.tx_bytes = stats->tx_bytes;
4188 oqs.tx_packets = stats->tx_packets;
4189 oqs.tx_errors = stats->tx_errors;
4190 if (stats->created != LLONG_MIN) {
4191 calc_duration(stats->created, cbdata->now,
4192 &oqs.duration_sec, &oqs.duration_nsec);
4194 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
4196 ofputil_append_queue_stat(&cbdata->replies, &oqs);
4200 handle_queue_stats_dump_cb(uint32_t queue_id,
4201 struct netdev_queue_stats *stats,
4204 struct queue_stats_cbdata *cbdata = cbdata_;
4206 put_queue_stats(cbdata, queue_id, stats);
4210 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
4211 struct queue_stats_cbdata *cbdata)
4213 cbdata->ofport = port;
4214 if (queue_id == OFPQ_ALL) {
4215 netdev_dump_queue_stats(port->netdev,
4216 handle_queue_stats_dump_cb, cbdata);
4218 struct netdev_queue_stats stats;
4220 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
4221 put_queue_stats(cbdata, queue_id, &stats);
4223 return OFPERR_OFPQOFC_BAD_QUEUE;
4230 handle_queue_stats_request(struct ofconn *ofconn,
4231 const struct ofp_header *rq)
4233 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4234 struct queue_stats_cbdata cbdata;
4235 struct ofport *port;
4237 struct ofputil_queue_stats_request oqsr;
4239 COVERAGE_INC(ofproto_queue_req);
4241 ofpmp_init(&cbdata.replies, rq);
4242 cbdata.now = time_msec();
4244 error = ofputil_decode_queue_stats_request(rq, &oqsr);
4249 if (oqsr.port_no == OFPP_ANY) {
4250 error = OFPERR_OFPQOFC_BAD_QUEUE;
4251 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
4252 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
4257 port = ofproto_get_port(ofproto, oqsr.port_no);
4259 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
4260 : OFPERR_OFPQOFC_BAD_PORT);
4263 ofconn_send_replies(ofconn, &cbdata.replies);
4265 ofpbuf_list_delete(&cbdata.replies);
4272 evict_rules_from_table(struct oftable *table, unsigned int extra_space)
4273 OVS_REQUIRES(ofproto_mutex)
4275 enum ofperr error = 0;
4276 struct rule_collection rules;
4277 unsigned int count = classifier_count(&table->cls) + extra_space;
4278 unsigned int max_flows = table->max_flows;
4280 rule_collection_init(&rules);
4282 while (count-- > max_flows) {
4285 if (!choose_rule_to_evict(table, &rule)) {
4286 error = OFPERR_OFPFMFC_TABLE_FULL;
4289 eviction_group_remove_rule(rule);
4290 rule_collection_add(&rules, rule);
4293 delete_flows__(&rules, OFPRR_EVICTION, NULL);
4294 rule_collection_destroy(&rules);
4300 is_conjunction(const struct ofpact *ofpacts, size_t ofpacts_len)
4302 return ofpacts_len > 0 && ofpacts->type == OFPACT_CONJUNCTION;
4306 get_conjunctions(const struct ofputil_flow_mod *fm,
4307 struct cls_conjunction **conjsp, size_t *n_conjsp)
4308 OVS_REQUIRES(ofproto_mutex)
4310 struct cls_conjunction *conjs = NULL;
4313 if (is_conjunction(fm->ofpacts, fm->ofpacts_len)) {
4314 const struct ofpact *ofpact;
4318 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4322 conjs = xzalloc(n_conjs * sizeof *conjs);
4324 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4325 struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact);
4326 conjs[i].clause = oc->clause;
4327 conjs[i].n_clauses = oc->n_clauses;
4328 conjs[i].id = oc->id;
4334 *n_conjsp = n_conjs;
4338 set_conjunctions(struct rule *rule, const struct cls_conjunction *conjs,
4340 OVS_REQUIRES(ofproto_mutex)
4342 struct cls_rule *cr = CONST_CAST(struct cls_rule *, &rule->cr);
4344 cls_rule_set_conjunctions(cr, conjs, n_conjs);
4347 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
4348 * in which no matching flow already exists in the flow table.
4350 * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on
4351 * success, or an OpenFlow error code on failure.
4353 * On successful return the caller must complete the operation either by
4354 * calling add_flow_finish(), or add_flow_revert() if the operation needs to
4357 * The caller retains ownership of 'fm->ofpacts'. */
4359 add_flow_begin(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4360 struct rule **rulep, bool *modify)
4361 OVS_REQUIRES(ofproto_mutex)
4363 struct oftable *table;
4367 enum ofperr error = 0;
4369 if (!check_table_id(ofproto, fm->table_id)) {
4370 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4375 if (fm->table_id == 0xff) {
4376 if (ofproto->ofproto_class->rule_choose_table) {
4377 error = ofproto->ofproto_class->rule_choose_table(ofproto,
4383 ovs_assert(table_id < ofproto->n_tables);
4387 } else if (fm->table_id < ofproto->n_tables) {
4388 table_id = fm->table_id;
4390 return OFPERR_OFPBRC_BAD_TABLE_ID;
4393 table = &ofproto->tables[table_id];
4394 if (table->flags & OFTABLE_READONLY
4395 && !(fm->flags & OFPUTIL_FF_NO_READONLY)) {
4396 return OFPERR_OFPBRC_EPERM;
4399 if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)
4400 && !match_has_default_hidden_fields(&fm->match)) {
4401 VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set "
4402 "non-default values to hidden fields", ofproto->name);
4403 return OFPERR_OFPBRC_EPERM;
4406 cls_rule_init(&cr, &fm->match, fm->priority);
4408 /* Check for the existence of an identical rule.
4409 * This will not return rules earlier marked as 'to_be_removed'. */
4410 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
4412 /* Transform "add" into "modify" of an existing identical flow. */
4413 cls_rule_destroy(&cr);
4415 fm->modify_cookie = true;
4416 error = modify_flow_check__(ofproto, fm, rule);
4422 } else { /* New rule. */
4423 struct cls_conjunction *conjs;
4426 /* Check for overlap, if requested. */
4427 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP
4428 && classifier_rule_overlaps(&table->cls, &cr)) {
4429 cls_rule_destroy(&cr);
4430 return OFPERR_OFPFMFC_OVERLAP;
4433 /* If necessary, evict an existing rule to clear out space. */
4434 error = evict_rules_from_table(table, 1);
4436 cls_rule_destroy(&cr);
4440 /* Allocate new rule. */
4441 error = ofproto_rule_create(ofproto, fm, &cr, table - ofproto->tables,
4447 /* Insert flow to the classifier, so that later flow_mods may relate
4448 * to it. This is reversible, in case later errors require this to
4450 ofproto_rule_insert__(ofproto, rule);
4451 /* Make the new rule invisible for classifier lookups. */
4452 classifier_defer(&table->cls);
4453 get_conjunctions(fm, &conjs, &n_conjs);
4454 classifier_insert(&table->cls, &rule->cr, conjs, n_conjs);
4457 error = ofproto->ofproto_class->rule_insert(rule);
4459 oftable_remove_rule(rule);
4460 ofproto_rule_unref(rule);
4471 /* Revert the effects of add_flow_begin().
4472 * 'new_rule' must be passed in as NULL, if no new rule was allocated and
4473 * inserted to the classifier.
4474 * Note: evictions cannot be reverted. */
4476 add_flow_revert(struct ofproto *ofproto, struct rule *new_rule)
4477 OVS_REQUIRES(ofproto_mutex)
4479 /* Old rule was not changed yet, only need to revert a new rule. */
4481 struct oftable *table = &ofproto->tables[new_rule->table_id];
4483 if (!classifier_remove(&table->cls, &new_rule->cr)) {
4486 classifier_publish(&table->cls);
4488 ofproto_rule_remove__(ofproto, new_rule);
4489 ofproto->ofproto_class->rule_delete(new_rule);
4490 ofproto_rule_unref(new_rule);
4495 add_flow_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4496 const struct flow_mod_requester *req,
4497 struct rule *rule, bool modify)
4498 OVS_REQUIRES(ofproto_mutex)
4501 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4503 modify_flow__(ofproto, fm, req, rule, &dead_cookies);
4504 learned_cookies_flush(ofproto, &dead_cookies);
4506 struct oftable *table = &ofproto->tables[rule->table_id];
4508 cls_rule_make_visible(&rule->cr);
4509 classifier_publish(&table->cls);
4511 learned_cookies_inc(ofproto, rule_get_actions(rule));
4513 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
4514 if (ofproto->vlan_bitmap) {
4515 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
4517 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
4518 bitmap_set1(ofproto->vlan_bitmap, vid);
4519 ofproto->vlans_changed = true;
4522 ofproto->vlans_changed = true;
4526 ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0,
4527 req ? req->ofconn : NULL,
4528 req ? req->request->xid : 0, NULL);
4531 send_buffered_packet(req, fm->buffer_id, rule);
4534 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4536 /* Checks if the 'rule' can be modified to match 'fm'.
4538 * Returns 0 on success, otherwise an OpenFlow error code. */
4540 modify_flow_check__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4541 const struct rule *rule)
4542 OVS_REQUIRES(ofproto_mutex)
4544 if (ofproto->ofproto_class->rule_premodify_actions) {
4545 return ofproto->ofproto_class->rule_premodify_actions(
4546 rule, fm->ofpacts, fm->ofpacts_len);
4551 /* Checks if the rules listed in 'rules' can have their actions changed to
4552 * match those in 'fm'.
4554 * Returns 0 on success, otherwise an OpenFlow error code. */
4556 modify_flows_check__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4557 const struct rule_collection *rules)
4558 OVS_REQUIRES(ofproto_mutex)
4563 if (ofproto->ofproto_class->rule_premodify_actions) {
4564 for (i = 0; i < rules->n; i++) {
4565 error = modify_flow_check__(ofproto, fm, rules->rules[i]);
4575 /* Modifies the 'rule', changing them to match 'fm'. */
4577 modify_flow__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4578 const struct flow_mod_requester *req, struct rule *rule,
4579 struct ovs_list *dead_cookies)
4580 OVS_REQUIRES(ofproto_mutex)
4582 enum nx_flow_update_event event = fm->command == OFPFC_ADD
4583 ? NXFME_ADDED : NXFME_MODIFIED;
4585 /* 'fm' says that */
4586 bool change_cookie = (fm->modify_cookie
4587 && fm->new_cookie != OVS_BE64_MAX
4588 && fm->new_cookie != rule->flow_cookie);
4590 const struct rule_actions *actions = rule_get_actions(rule);
4591 bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
4593 actions->ofpacts_len);
4595 bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
4597 long long int now = time_msec();
4599 if (change_cookie) {
4600 cookies_remove(ofproto, rule);
4603 ovs_mutex_lock(&rule->mutex);
4604 if (fm->command == OFPFC_ADD) {
4605 rule->idle_timeout = fm->idle_timeout;
4606 rule->hard_timeout = fm->hard_timeout;
4607 rule->importance = fm->importance;
4608 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4609 rule->created = now;
4611 if (change_cookie) {
4612 rule->flow_cookie = fm->new_cookie;
4614 rule->modified = now;
4615 ovs_mutex_unlock(&rule->mutex);
4617 if (change_cookie) {
4618 cookies_insert(ofproto, rule);
4620 if (fm->command == OFPFC_ADD) {
4621 if (fm->idle_timeout || fm->hard_timeout || fm->importance) {
4622 if (!rule->eviction_group) {
4623 eviction_group_add_rule(rule);
4626 eviction_group_remove_rule(rule);
4630 if (change_actions) {
4631 /* We have to change the actions. The rule's conjunctive match set
4632 * is a function of its actions, so we need to update that too. The
4633 * conjunctive match set is used in the lookup process to figure
4634 * which (if any) collection of conjunctive sets the packet matches
4635 * with. However, a rule with conjunction actions is never to be
4636 * returned as a classifier lookup result. To make sure a rule with
4637 * conjunction actions is not returned as a lookup result, we update
4638 * them in a carefully chosen order:
4640 * - If we're adding a conjunctive match set where there wasn't one
4641 * before, we have to make the conjunctive match set available to
4642 * lookups before the rule's actions are changed, as otherwise
4643 * rule with a conjunction action could be returned as a lookup
4646 * - To clear some nonempty conjunctive set, we set the rule's
4647 * actions first, so that a lookup can't return a rule with
4648 * conjunction actions.
4650 * - Otherwise, order doesn't matter for changing one nonempty
4651 * conjunctive match set to some other nonempty set, since the
4652 * rule's actions are not seen by the classifier, and hence don't
4653 * matter either before or after the change. */
4654 struct cls_conjunction *conjs;
4656 get_conjunctions(fm, &conjs, &n_conjs);
4659 set_conjunctions(rule, conjs, n_conjs);
4661 ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts,
4664 set_conjunctions(rule, conjs, n_conjs);
4670 if (change_actions || reset_counters) {
4671 ofproto->ofproto_class->rule_modify_actions(rule, reset_counters);
4674 if (event != NXFME_MODIFIED || change_actions || change_cookie) {
4675 ofmonitor_report(ofproto->connmgr, rule, event, 0,
4676 req ? req->ofconn : NULL, req ? req->request->xid : 0,
4677 change_actions ? actions : NULL);
4680 if (change_actions) {
4681 learned_cookies_inc(ofproto, rule_get_actions(rule));
4682 learned_cookies_dec(ofproto, actions, dead_cookies);
4683 rule_actions_destroy(actions);
4687 /* Modifies the rules listed in 'rules', changing their actions to match those
4690 * 'req' is used to retrieve the packet buffer specified in fm->buffer_id,
4693 modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4694 const struct flow_mod_requester *req,
4695 const struct rule_collection *rules)
4696 OVS_REQUIRES(ofproto_mutex)
4698 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4701 for (i = 0; i < rules->n; i++) {
4702 modify_flow__(ofproto, fm, req, rules->rules[i], &dead_cookies);
4704 learned_cookies_flush(ofproto, &dead_cookies);
4708 modify_flows_begin__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4709 struct rule_collection *rules)
4710 OVS_REQUIRES(ofproto_mutex)
4715 error = modify_flows_check__(ofproto, fm, rules);
4716 } else if (!(fm->cookie_mask != htonll(0)
4717 || fm->new_cookie == OVS_BE64_MAX)) {
4720 error = add_flow_begin(ofproto, fm, &rules->rules[0], &modify);
4722 ovs_assert(!modify);
4725 rules->rules[0] = NULL;
4731 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4734 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4737 modify_flows_begin_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4738 struct rule_collection *rules)
4739 OVS_REQUIRES(ofproto_mutex)
4741 struct rule_criteria criteria;
4744 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4745 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4746 rule_criteria_require_rw(&criteria,
4747 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4748 error = collect_rules_loose(ofproto, &criteria, rules);
4749 rule_criteria_destroy(&criteria);
4752 error = modify_flows_begin__(ofproto, fm, rules);
4756 rule_collection_destroy(rules);
4762 modify_flows_revert(struct ofproto *ofproto, struct rule_collection *rules)
4763 OVS_REQUIRES(ofproto_mutex)
4765 /* Old rules were not changed yet, only need to revert a new rule. */
4766 if (rules->n == 0 && rules->rules[0] != NULL) {
4767 add_flow_revert(ofproto, rules->rules[0]);
4769 rule_collection_destroy(rules);
4773 modify_flows_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4774 const struct flow_mod_requester *req,
4775 struct rule_collection *rules)
4776 OVS_REQUIRES(ofproto_mutex)
4779 modify_flows__(ofproto, fm, req, rules);
4780 send_buffered_packet(req, fm->buffer_id, rules->rules[0]);
4781 } else if (rules->rules[0] != NULL) {
4782 add_flow_finish(ofproto, fm, req, rules->rules[0], false);
4784 rule_collection_destroy(rules);
4787 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4788 * code on failure. */
4790 modify_flow_begin_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4791 struct rule_collection *rules)
4792 OVS_REQUIRES(ofproto_mutex)
4794 struct rule_criteria criteria;
4797 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4798 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
4799 rule_criteria_require_rw(&criteria,
4800 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4801 error = collect_rules_strict(ofproto, &criteria, rules);
4802 rule_criteria_destroy(&criteria);
4805 /* collect_rules_strict() can return max 1 rule. */
4806 error = modify_flows_begin__(ofproto, fm, rules);
4810 rule_collection_destroy(rules);
4815 /* OFPFC_DELETE implementation. */
4817 /* Deletes the rules listed in 'rules'. */
4819 delete_flows__(const struct rule_collection *rules,
4820 enum ofp_flow_removed_reason reason,
4821 const struct flow_mod_requester *req)
4822 OVS_REQUIRES(ofproto_mutex)
4825 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4826 struct ofproto *ofproto = rules->rules[0]->ofproto;
4827 struct rule *rule, *next;
4830 for (i = 0, next = rules->rules[0];
4831 rule = next, next = (++i < rules->n) ? rules->rules[i] : NULL,
4833 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
4834 uint8_t next_table = next ? next->table_id : UINT8_MAX;
4836 ofproto_rule_send_removed(rule, reason);
4838 ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
4839 req ? req->ofconn : NULL,
4840 req ? req->request->xid : 0, NULL);
4842 if (next_table == rule->table_id) {
4843 classifier_defer(cls);
4845 classifier_remove(cls, &rule->cr);
4846 if (next_table != rule->table_id) {
4847 classifier_publish(cls);
4849 ofproto_rule_remove__(ofproto, rule);
4851 ofproto->ofproto_class->rule_delete(rule);
4853 learned_cookies_dec(ofproto, rule_get_actions(rule),
4856 ofproto_rule_unref(rule);
4858 learned_cookies_flush(ofproto, &dead_cookies);
4859 ofmonitor_flush(ofproto->connmgr);
4863 /* Implements OFPFC_DELETE. */
4865 delete_flows_begin_loose(struct ofproto *ofproto,
4866 const struct ofputil_flow_mod *fm,
4867 struct rule_collection *rules)
4868 OVS_REQUIRES(ofproto_mutex)
4870 struct rule_criteria criteria;
4873 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4874 fm->cookie, fm->cookie_mask,
4875 fm->out_port, fm->out_group);
4876 rule_criteria_require_rw(&criteria,
4877 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4878 error = collect_rules_loose(ofproto, &criteria, rules);
4879 rule_criteria_destroy(&criteria);
4882 for (size_t i = 0; i < rules->n; i++) {
4883 struct rule *rule = rules->rules[i];
4885 CONST_CAST(struct cls_rule *, &rule->cr)->to_be_removed = true;
4893 delete_flows_revert(struct rule_collection *rules)
4894 OVS_REQUIRES(ofproto_mutex)
4896 for (size_t i = 0; i < rules->n; i++) {
4897 struct rule *rule = rules->rules[i];
4899 CONST_CAST(struct cls_rule *, &rule->cr)->to_be_removed = false;
4901 rule_collection_destroy(rules);
4905 delete_flows_finish(const struct ofputil_flow_mod *fm,
4906 const struct flow_mod_requester *req,
4907 struct rule_collection *rules)
4908 OVS_REQUIRES(ofproto_mutex)
4910 delete_flows__(rules, fm->delete_reason, req);
4911 rule_collection_destroy(rules);
4914 /* Implements OFPFC_DELETE_STRICT. */
4916 delete_flow_begin_strict(struct ofproto *ofproto,
4917 const struct ofputil_flow_mod *fm,
4918 struct rule_collection *rules)
4919 OVS_REQUIRES(ofproto_mutex)
4921 struct rule_criteria criteria;
4924 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4925 fm->cookie, fm->cookie_mask,
4926 fm->out_port, fm->out_group);
4927 rule_criteria_require_rw(&criteria,
4928 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4929 error = collect_rules_strict(ofproto, &criteria, rules);
4930 rule_criteria_destroy(&criteria);
4933 for (size_t i = 0; i < rules->n; i++) {
4934 struct rule *rule = rules->rules[i];
4936 CONST_CAST(struct cls_rule *, &rule->cr)->to_be_removed = true;
4944 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
4945 OVS_REQUIRES(ofproto_mutex)
4947 struct ofputil_flow_removed fr;
4950 if (rule_is_hidden(rule) ||
4951 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
4955 minimatch_expand(&rule->cr.match, &fr.match);
4956 fr.priority = rule->cr.priority;
4957 fr.cookie = rule->flow_cookie;
4959 fr.table_id = rule->table_id;
4960 calc_duration(rule->created, time_msec(),
4961 &fr.duration_sec, &fr.duration_nsec);
4962 ovs_mutex_lock(&rule->mutex);
4963 fr.idle_timeout = rule->idle_timeout;
4964 fr.hard_timeout = rule->hard_timeout;
4965 ovs_mutex_unlock(&rule->mutex);
4966 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
4967 &fr.byte_count, &used);
4969 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
4972 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4973 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4976 * ofproto implementation ->run() functions should use this function to expire
4977 * OpenFlow flows. */
4979 ofproto_rule_expire(struct rule *rule, uint8_t reason)
4980 OVS_REQUIRES(ofproto_mutex)
4982 struct rule_collection rules;
4984 rules.rules = rules.stub;
4986 rules.stub[0] = rule;
4987 delete_flows__(&rules, reason, NULL);
4990 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4991 * means "infinite". */
4993 reduce_timeout(uint16_t max, uint16_t *timeout)
4995 if (max && (!*timeout || *timeout > max)) {
5000 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
5001 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
5002 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
5004 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
5006 ofproto_rule_reduce_timeouts(struct rule *rule,
5007 uint16_t idle_timeout, uint16_t hard_timeout)
5008 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
5010 if (!idle_timeout && !hard_timeout) {
5014 ovs_mutex_lock(&ofproto_mutex);
5015 if (list_is_empty(&rule->expirable)) {
5016 list_insert(&rule->ofproto->expirable, &rule->expirable);
5018 ovs_mutex_unlock(&ofproto_mutex);
5020 ovs_mutex_lock(&rule->mutex);
5021 reduce_timeout(idle_timeout, &rule->idle_timeout);
5022 reduce_timeout(hard_timeout, &rule->hard_timeout);
5023 ovs_mutex_unlock(&rule->mutex);
5027 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5028 OVS_EXCLUDED(ofproto_mutex)
5030 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5031 struct ofputil_flow_mod fm;
5032 uint64_t ofpacts_stub[1024 / 8];
5033 struct ofpbuf ofpacts;
5036 error = reject_slave_controller(ofconn);
5041 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
5042 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
5044 u16_to_ofp(ofproto->max_ports),
5047 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
5050 struct flow_mod_requester req;
5052 req.ofconn = ofconn;
5054 error = handle_flow_mod__(ofproto, &fm, &req);
5057 goto exit_free_ofpacts;
5060 ofconn_report_flow_mod(ofconn, fm.command);
5063 ofpbuf_uninit(&ofpacts);
5069 handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
5070 const struct flow_mod_requester *req)
5071 OVS_EXCLUDED(ofproto_mutex)
5073 struct ofp_bundle_entry be;
5076 ovs_mutex_lock(&ofproto_mutex);
5077 error = do_bundle_flow_mod_begin(ofproto, fm, &be);
5079 do_bundle_flow_mod_finish(ofproto, fm, req, &be);
5081 ofmonitor_flush(ofproto->connmgr);
5082 ovs_mutex_unlock(&ofproto_mutex);
5084 run_rule_executes(ofproto);
5089 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
5091 struct ofputil_role_request request;
5092 struct ofputil_role_request reply;
5096 error = ofputil_decode_role_message(oh, &request);
5101 if (request.role != OFPCR12_ROLE_NOCHANGE) {
5102 if (request.have_generation_id
5103 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
5104 return OFPERR_OFPRRFC_STALE;
5107 ofconn_set_role(ofconn, request.role);
5110 reply.role = ofconn_get_role(ofconn);
5111 reply.have_generation_id = ofconn_get_master_election_id(
5112 ofconn, &reply.generation_id);
5113 buf = ofputil_encode_role_reply(oh, &reply);
5114 ofconn_send_reply(ofconn, buf);
5120 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
5121 const struct ofp_header *oh)
5123 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
5124 enum ofputil_protocol cur, next;
5126 cur = ofconn_get_protocol(ofconn);
5127 next = ofputil_protocol_set_tid(cur, msg->set != 0);
5128 ofconn_set_protocol(ofconn, next);
5134 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
5136 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
5137 enum ofputil_protocol cur, next;
5138 enum ofputil_protocol next_base;
5140 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
5142 return OFPERR_OFPBRC_EPERM;
5145 cur = ofconn_get_protocol(ofconn);
5146 next = ofputil_protocol_set_base(cur, next_base);
5147 ofconn_set_protocol(ofconn, next);
5153 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
5154 const struct ofp_header *oh)
5156 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
5159 format = ntohl(msg->format);
5160 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
5161 return OFPERR_OFPBRC_EPERM;
5164 ofconn_set_packet_in_format(ofconn, format);
5169 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
5171 const struct nx_async_config *msg = ofpmsg_body(oh);
5172 uint32_t master[OAM_N_TYPES];
5173 uint32_t slave[OAM_N_TYPES];
5175 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
5176 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
5177 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
5179 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
5180 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
5181 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
5183 ofconn_set_async_config(ofconn, master, slave);
5184 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
5185 !ofconn_get_miss_send_len(ofconn)) {
5186 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
5193 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
5196 uint32_t master[OAM_N_TYPES];
5197 uint32_t slave[OAM_N_TYPES];
5198 struct nx_async_config *msg;
5200 ofconn_get_async_config(ofconn, master, slave);
5201 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
5202 msg = ofpbuf_put_zeros(buf, sizeof *msg);
5204 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
5205 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
5206 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
5208 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
5209 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
5210 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
5212 ofconn_send_reply(ofconn, buf);
5218 handle_nxt_set_controller_id(struct ofconn *ofconn,
5219 const struct ofp_header *oh)
5221 const struct nx_controller_id *nci = ofpmsg_body(oh);
5223 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
5224 return OFPERR_NXBRC_MUST_BE_ZERO;
5227 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
5232 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
5236 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
5237 ? OFPRAW_OFPT10_BARRIER_REPLY
5238 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
5239 ofconn_send_reply(ofconn, buf);
5244 ofproto_compose_flow_refresh_update(const struct rule *rule,
5245 enum nx_flow_monitor_flags flags,
5246 struct ovs_list *msgs)
5247 OVS_REQUIRES(ofproto_mutex)
5249 const struct rule_actions *actions;
5250 struct ofputil_flow_update fu;
5253 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
5254 ? NXFME_ADDED : NXFME_MODIFIED);
5256 ovs_mutex_lock(&rule->mutex);
5257 fu.idle_timeout = rule->idle_timeout;
5258 fu.hard_timeout = rule->hard_timeout;
5259 ovs_mutex_unlock(&rule->mutex);
5260 fu.table_id = rule->table_id;
5261 fu.cookie = rule->flow_cookie;
5262 minimatch_expand(&rule->cr.match, &match);
5264 fu.priority = rule->cr.priority;
5266 actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL;
5267 fu.ofpacts = actions ? actions->ofpacts : NULL;
5268 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
5270 if (list_is_empty(msgs)) {
5271 ofputil_start_flow_update(msgs);
5273 ofputil_append_flow_update(&fu, msgs);
5277 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
5278 struct ovs_list *msgs)
5279 OVS_REQUIRES(ofproto_mutex)
5283 for (i = 0; i < rules->n; i++) {
5284 struct rule *rule = rules->rules[i];
5285 enum nx_flow_monitor_flags flags = rule->monitor_flags;
5286 rule->monitor_flags = 0;
5288 ofproto_compose_flow_refresh_update(rule, flags, msgs);
5293 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
5294 struct rule *rule, uint64_t seqno,
5295 struct rule_collection *rules)
5296 OVS_REQUIRES(ofproto_mutex)
5298 enum nx_flow_monitor_flags update;
5300 if (rule_is_hidden(rule)) {
5304 if (!ofproto_rule_has_out_port(rule, m->out_port)) {
5309 if (rule->add_seqno > seqno) {
5310 update = NXFMF_ADD | NXFMF_MODIFY;
5311 } else if (rule->modify_seqno > seqno) {
5312 update = NXFMF_MODIFY;
5317 if (!(m->flags & update)) {
5321 update = NXFMF_INITIAL;
5324 if (!rule->monitor_flags) {
5325 rule_collection_add(rules, rule);
5327 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
5331 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
5333 struct rule_collection *rules)
5334 OVS_REQUIRES(ofproto_mutex)
5336 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
5337 const struct oftable *table;
5338 struct cls_rule target;
5340 cls_rule_init_from_minimatch(&target, &m->match, 0);
5341 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
5344 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) {
5345 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
5348 cls_rule_destroy(&target);
5352 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
5353 struct rule_collection *rules)
5354 OVS_REQUIRES(ofproto_mutex)
5356 if (m->flags & NXFMF_INITIAL) {
5357 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
5362 ofmonitor_collect_resume_rules(struct ofmonitor *m,
5363 uint64_t seqno, struct rule_collection *rules)
5364 OVS_REQUIRES(ofproto_mutex)
5366 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
5370 flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
5371 OVS_REQUIRES(ofproto_mutex)
5373 struct ofmonitor *m;
5376 m = ofmonitor_lookup(ofconn, id);
5378 ofmonitor_destroy(m);
5381 error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
5388 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
5389 OVS_EXCLUDED(ofproto_mutex)
5391 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5392 struct ofmonitor **monitors;
5393 size_t n_monitors, allocated_monitors;
5394 struct rule_collection rules;
5395 struct ovs_list replies;
5400 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5402 n_monitors = allocated_monitors = 0;
5404 ovs_mutex_lock(&ofproto_mutex);
5406 struct ofputil_flow_monitor_request request;
5407 struct ofmonitor *m;
5410 retval = ofputil_decode_flow_monitor_request(&request, &b);
5411 if (retval == EOF) {
5413 } else if (retval) {
5418 if (request.table_id != 0xff
5419 && request.table_id >= ofproto->n_tables) {
5420 error = OFPERR_OFPBRC_BAD_TABLE_ID;
5424 error = ofmonitor_create(&request, ofconn, &m);
5429 if (n_monitors >= allocated_monitors) {
5430 monitors = x2nrealloc(monitors, &allocated_monitors,
5433 monitors[n_monitors++] = m;
5436 rule_collection_init(&rules);
5437 for (i = 0; i < n_monitors; i++) {
5438 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
5441 ofpmp_init(&replies, oh);
5442 ofmonitor_compose_refresh_updates(&rules, &replies);
5443 ovs_mutex_unlock(&ofproto_mutex);
5445 rule_collection_destroy(&rules);
5447 ofconn_send_replies(ofconn, &replies);
5453 for (i = 0; i < n_monitors; i++) {
5454 ofmonitor_destroy(monitors[i]);
5457 ovs_mutex_unlock(&ofproto_mutex);
5463 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
5464 OVS_EXCLUDED(ofproto_mutex)
5469 id = ofputil_decode_flow_monitor_cancel(oh);
5471 ovs_mutex_lock(&ofproto_mutex);
5472 error = flow_monitor_delete(ofconn, id);
5473 ovs_mutex_unlock(&ofproto_mutex);
5478 /* Meters implementation.
5480 * Meter table entry, indexed by the OpenFlow meter_id.
5481 * 'created' is used to compute the duration for meter stats.
5482 * 'list rules' is needed so that we can delete the dependent rules when the
5483 * meter table entry is deleted.
5484 * 'provider_meter_id' is for the provider's private use.
5487 long long int created; /* Time created. */
5488 struct ovs_list rules; /* List of "struct rule_dpif"s. */
5489 ofproto_meter_id provider_meter_id;
5490 uint16_t flags; /* Meter flags. */
5491 uint16_t n_bands; /* Number of meter bands. */
5492 struct ofputil_meter_band *bands;
5496 * This is used in instruction validation at flow set-up time,
5497 * as flows may not use non-existing meters.
5498 * Return value of UINT32_MAX signifies an invalid meter.
5501 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
5503 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5504 const struct meter *meter = ofproto->meters[of_meter_id];
5506 return meter->provider_meter_id.uint32;
5512 /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's
5515 meter_insert_rule(struct rule *rule)
5517 const struct rule_actions *a = rule_get_actions(rule);
5518 uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len);
5519 struct meter *meter = rule->ofproto->meters[meter_id];
5521 list_insert(&meter->rules, &rule->meter_list_node);
5525 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5529 meter->flags = config->flags;
5530 meter->n_bands = config->n_bands;
5531 meter->bands = xmemdup(config->bands,
5532 config->n_bands * sizeof *meter->bands);
5535 static struct meter *
5536 meter_create(const struct ofputil_meter_config *config,
5537 ofproto_meter_id provider_meter_id)
5539 struct meter *meter;
5541 meter = xzalloc(sizeof *meter);
5542 meter->provider_meter_id = provider_meter_id;
5543 meter->created = time_msec();
5544 list_init(&meter->rules);
5546 meter_update(meter, config);
5552 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5553 OVS_REQUIRES(ofproto_mutex)
5556 for (mid = first; mid <= last; ++mid) {
5557 struct meter *meter = ofproto->meters[mid];
5559 ofproto->meters[mid] = NULL;
5560 ofproto->ofproto_class->meter_del(ofproto,
5561 meter->provider_meter_id);
5569 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5571 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5572 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5576 return OFPERR_OFPMMFC_METER_EXISTS;
5579 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5582 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5583 *meterp = meter_create(&mm->meter, provider_meter_id);
5589 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5591 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5593 uint32_t provider_meter_id;
5596 return OFPERR_OFPMMFC_UNKNOWN_METER;
5599 provider_meter_id = meter->provider_meter_id.uint32;
5600 error = ofproto->ofproto_class->meter_set(ofproto,
5601 &meter->provider_meter_id,
5603 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5605 meter_update(meter, &mm->meter);
5611 handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm)
5612 OVS_EXCLUDED(ofproto_mutex)
5614 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5615 uint32_t meter_id = mm->meter.meter_id;
5616 struct rule_collection rules;
5617 enum ofperr error = 0;
5618 uint32_t first, last;
5620 if (meter_id == OFPM13_ALL) {
5622 last = ofproto->meter_features.max_meters;
5624 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5627 first = last = meter_id;
5630 /* First delete the rules that use this meter. If any of those rules are
5631 * currently being modified, postpone the whole operation until later. */
5632 rule_collection_init(&rules);
5633 ovs_mutex_lock(&ofproto_mutex);
5634 for (meter_id = first; meter_id <= last; ++meter_id) {
5635 struct meter *meter = ofproto->meters[meter_id];
5636 if (meter && !list_is_empty(&meter->rules)) {
5639 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5640 rule_collection_add(&rules, rule);
5644 delete_flows__(&rules, OFPRR_METER_DELETE, NULL);
5646 /* Delete the meters. */
5647 meter_delete(ofproto, first, last);
5649 ovs_mutex_unlock(&ofproto_mutex);
5650 rule_collection_destroy(&rules);
5656 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5658 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5659 struct ofputil_meter_mod mm;
5660 uint64_t bands_stub[256 / 8];
5661 struct ofpbuf bands;
5665 error = reject_slave_controller(ofconn);
5670 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5672 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5674 goto exit_free_bands;
5677 meter_id = mm.meter.meter_id;
5679 if (mm.command != OFPMC13_DELETE) {
5680 /* Fails also when meters are not implemented by the provider. */
5681 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5682 error = OFPERR_OFPMMFC_INVALID_METER;
5683 goto exit_free_bands;
5684 } else if (meter_id > ofproto->meter_features.max_meters) {
5685 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5686 goto exit_free_bands;
5688 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5689 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5690 goto exit_free_bands;
5694 switch (mm.command) {
5696 error = handle_add_meter(ofproto, &mm);
5699 case OFPMC13_MODIFY:
5700 error = handle_modify_meter(ofproto, &mm);
5703 case OFPMC13_DELETE:
5704 error = handle_delete_meter(ofconn, &mm);
5708 error = OFPERR_OFPMMFC_BAD_COMMAND;
5713 ofpbuf_uninit(&bands);
5718 handle_meter_features_request(struct ofconn *ofconn,
5719 const struct ofp_header *request)
5721 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5722 struct ofputil_meter_features features;
5725 if (ofproto->ofproto_class->meter_get_features) {
5726 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5728 memset(&features, 0, sizeof features);
5730 b = ofputil_encode_meter_features_reply(&features, request);
5732 ofconn_send_reply(ofconn, b);
5737 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5740 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5741 struct ovs_list replies;
5742 uint64_t bands_stub[256 / 8];
5743 struct ofpbuf bands;
5744 uint32_t meter_id, first, last;
5746 ofputil_decode_meter_request(request, &meter_id);
5748 if (meter_id == OFPM13_ALL) {
5750 last = ofproto->meter_features.max_meters;
5752 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5753 !ofproto->meters[meter_id]) {
5754 return OFPERR_OFPMMFC_UNKNOWN_METER;
5756 first = last = meter_id;
5759 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5760 ofpmp_init(&replies, request);
5762 for (meter_id = first; meter_id <= last; ++meter_id) {
5763 struct meter *meter = ofproto->meters[meter_id];
5765 continue; /* Skip non-existing meters. */
5767 if (type == OFPTYPE_METER_STATS_REQUEST) {
5768 struct ofputil_meter_stats stats;
5770 stats.meter_id = meter_id;
5772 /* Provider sets the packet and byte counts, we do the rest. */
5773 stats.flow_count = list_size(&meter->rules);
5774 calc_duration(meter->created, time_msec(),
5775 &stats.duration_sec, &stats.duration_nsec);
5776 stats.n_bands = meter->n_bands;
5777 ofpbuf_clear(&bands);
5779 = ofpbuf_put_uninit(&bands,
5780 meter->n_bands * sizeof *stats.bands);
5782 if (!ofproto->ofproto_class->meter_get(ofproto,
5783 meter->provider_meter_id,
5785 ofputil_append_meter_stats(&replies, &stats);
5787 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5788 struct ofputil_meter_config config;
5790 config.meter_id = meter_id;
5791 config.flags = meter->flags;
5792 config.n_bands = meter->n_bands;
5793 config.bands = meter->bands;
5794 ofputil_append_meter_config(&replies, &config);
5798 ofconn_send_replies(ofconn, &replies);
5799 ofpbuf_uninit(&bands);
5804 ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id,
5805 struct ofgroup **group)
5806 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5808 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5809 hash_int(group_id, 0), &ofproto->groups) {
5810 if ((*group)->group_id == group_id) {
5818 /* If the group exists, this function increments the groups's reference count.
5820 * Make sure to call ofproto_group_unref() after no longer needing to maintain
5821 * a reference to the group. */
5823 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5824 struct ofgroup **group)
5828 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5829 found = ofproto_group_lookup__(ofproto, group_id, group);
5831 ofproto_group_ref(*group);
5833 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5838 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
5839 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5841 struct ofgroup *grp;
5843 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5844 hash_int(group_id, 0), &ofproto->groups) {
5845 if (grp->group_id == group_id) {
5853 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5854 OVS_EXCLUDED(ofproto->groups_rwlock)
5858 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5859 exists = ofproto_group_exists__(ofproto, group_id);
5860 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5866 group_get_ref_count(struct ofgroup *group)
5867 OVS_EXCLUDED(ofproto_mutex)
5869 struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto);
5870 struct rule_criteria criteria;
5871 struct rule_collection rules;
5876 match_init_catchall(&match);
5877 rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0),
5878 OFPP_ANY, group->group_id);
5879 ovs_mutex_lock(&ofproto_mutex);
5880 error = collect_rules_loose(ofproto, &criteria, &rules);
5881 ovs_mutex_unlock(&ofproto_mutex);
5882 rule_criteria_destroy(&criteria);
5884 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
5886 rule_collection_destroy(&rules);
5891 append_group_stats(struct ofgroup *group, struct ovs_list *replies)
5893 struct ofputil_group_stats ogs;
5894 const struct ofproto *ofproto = group->ofproto;
5895 long long int now = time_msec();
5898 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
5900 /* Provider sets the packet and byte counts, we do the rest. */
5901 ogs.ref_count = group_get_ref_count(group);
5902 ogs.n_buckets = group->n_buckets;
5904 error = (ofproto->ofproto_class->group_get_stats
5905 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
5908 ogs.packet_count = UINT64_MAX;
5909 ogs.byte_count = UINT64_MAX;
5910 memset(ogs.bucket_stats, 0xff,
5911 ogs.n_buckets * sizeof *ogs.bucket_stats);
5914 ogs.group_id = group->group_id;
5915 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
5917 ofputil_append_group_stats(replies, &ogs);
5919 free(ogs.bucket_stats);
5923 handle_group_request(struct ofconn *ofconn,
5924 const struct ofp_header *request, uint32_t group_id,
5925 void (*cb)(struct ofgroup *, struct ovs_list *replies))
5927 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5928 struct ofgroup *group;
5929 struct ovs_list replies;
5931 ofpmp_init(&replies, request);
5932 if (group_id == OFPG_ALL) {
5933 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5934 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
5935 cb(group, &replies);
5937 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5939 if (ofproto_group_lookup(ofproto, group_id, &group)) {
5940 cb(group, &replies);
5941 ofproto_group_unref(group);
5944 ofconn_send_replies(ofconn, &replies);
5948 handle_group_stats_request(struct ofconn *ofconn,
5949 const struct ofp_header *request)
5954 error = ofputil_decode_group_stats_request(request, &group_id);
5959 handle_group_request(ofconn, request, group_id, append_group_stats);
5964 append_group_desc(struct ofgroup *group, struct ovs_list *replies)
5966 struct ofputil_group_desc gds;
5968 gds.group_id = group->group_id;
5969 gds.type = group->type;
5970 gds.props = group->props;
5972 ofputil_append_group_desc_reply(&gds, &group->buckets, replies);
5976 handle_group_desc_stats_request(struct ofconn *ofconn,
5977 const struct ofp_header *request)
5979 handle_group_request(ofconn, request,
5980 ofputil_decode_group_desc_request(request),
5986 handle_group_features_stats_request(struct ofconn *ofconn,
5987 const struct ofp_header *request)
5989 struct ofproto *p = ofconn_get_ofproto(ofconn);
5992 msg = ofputil_encode_group_features_reply(&p->ogf, request);
5994 ofconn_send_reply(ofconn, msg);
6001 handle_queue_get_config_request(struct ofconn *ofconn,
6002 const struct ofp_header *oh)
6004 struct ofproto *p = ofconn_get_ofproto(ofconn);
6005 struct netdev_queue_dump queue_dump;
6006 struct ofport *ofport;
6007 unsigned int queue_id;
6008 struct ofpbuf *reply;
6009 struct smap details;
6013 error = ofputil_decode_queue_get_config_request(oh, &request);
6018 ofport = ofproto_get_port(p, request);
6020 return OFPERR_OFPQOFC_BAD_PORT;
6023 reply = ofputil_encode_queue_get_config_reply(oh);
6025 smap_init(&details);
6026 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
6027 struct ofputil_queue_config queue;
6029 /* None of the existing queues have compatible properties, so we
6030 * hard-code omitting min_rate and max_rate. */
6031 queue.queue_id = queue_id;
6032 queue.min_rate = UINT16_MAX;
6033 queue.max_rate = UINT16_MAX;
6034 ofputil_append_queue_get_config_reply(reply, &queue);
6036 smap_destroy(&details);
6038 ofconn_send_reply(ofconn, reply);
6044 init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm,
6045 struct ofgroup **ofgroup)
6048 const long long int now = time_msec();
6050 if (gm->group_id > OFPG_MAX) {
6051 return OFPERR_OFPGMFC_INVALID_GROUP;
6053 if (gm->type > OFPGT11_FF) {
6054 return OFPERR_OFPGMFC_BAD_TYPE;
6057 *ofgroup = ofproto->ofproto_class->group_alloc();
6059 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
6060 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
6063 (*ofgroup)->ofproto = ofproto;
6064 *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id;
6065 *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type;
6066 *CONST_CAST(long long int *, &((*ofgroup)->created)) = now;
6067 *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now;
6068 ovs_refcount_init(&(*ofgroup)->ref_count);
6070 list_move(&(*ofgroup)->buckets, &gm->buckets);
6071 *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) =
6072 list_size(&(*ofgroup)->buckets);
6074 memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props),
6075 &gm->props, sizeof (struct ofputil_group_props));
6077 /* Construct called BEFORE any locks are held. */
6078 error = ofproto->ofproto_class->group_construct(*ofgroup);
6080 ofputil_bucket_list_destroy(&(*ofgroup)->buckets);
6081 ofproto->ofproto_class->group_dealloc(*ofgroup);
6086 /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to
6087 * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on
6090 add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
6092 struct ofgroup *ofgroup;
6095 /* Allocate new group and initialize it. */
6096 error = init_group(ofproto, gm, &ofgroup);
6101 /* We wrlock as late as possible to minimize the time we jam any other
6102 * threads: No visible state changes before acquiring the lock. */
6103 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6105 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6106 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6110 if (ofproto_group_exists__(ofproto, gm->group_id)) {
6111 error = OFPERR_OFPGMFC_GROUP_EXISTS;
6116 /* Insert new group. */
6117 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
6118 hash_int(ofgroup->group_id, 0));
6119 ofproto->n_groups[ofgroup->type]++;
6121 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6126 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6127 ofproto->ofproto_class->group_destruct(ofgroup);
6128 ofputil_bucket_list_destroy(&ofgroup->buckets);
6129 ofproto->ofproto_class->group_dealloc(ofgroup);
6134 /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets
6135 * already in 'new_ofgroup' will be placed just after the (copy of the) bucket
6136 * in 'ofgroup' with bucket ID 'command_bucket_id'. Special
6137 * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are
6140 copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup,
6141 struct ofgroup *new_ofgroup,
6142 uint32_t command_bucket_id)
6144 struct ofputil_bucket *last = NULL;
6146 if (command_bucket_id <= OFPG15_BUCKET_MAX) {
6147 /* Check here to ensure that a bucket corresponding to
6148 * command_bucket_id exists in the old bucket list.
6150 * The subsequent search of below of new_ofgroup covers
6151 * both buckets in the old bucket list and buckets added
6152 * by the insert buckets group mod message this function processes. */
6153 if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) {
6154 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6157 if (!list_is_empty(&new_ofgroup->buckets)) {
6158 last = ofputil_bucket_list_back(&new_ofgroup->buckets);
6162 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL);
6164 if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) {
6165 VLOG_WARN_RL(&rl, "Duplicate bucket id");
6166 return OFPERR_OFPGMFC_BUCKET_EXISTS;
6169 /* Rearrange list according to command_bucket_id */
6170 if (command_bucket_id == OFPG15_BUCKET_LAST) {
6171 struct ofputil_bucket *new_first;
6172 const struct ofputil_bucket *first;
6174 first = ofputil_bucket_list_front(&ofgroup->buckets);
6175 new_first = ofputil_bucket_find(&new_ofgroup->buckets,
6178 list_splice(new_ofgroup->buckets.next, &new_first->list_node,
6179 &new_ofgroup->buckets);
6180 } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) {
6181 struct ofputil_bucket *after;
6183 /* Presence of bucket is checked above so after should never be NULL */
6184 after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id);
6186 list_splice(after->list_node.next, new_ofgroup->buckets.next,
6187 last->list_node.next);
6193 /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup'
6194 * with the exception of the bucket whose bucket id is 'command_bucket_id'.
6195 * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST
6196 * and OFPG15_BUCKET_ALL are also honored. */
6198 copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup,
6199 struct ofgroup *new_ofgroup,
6200 uint32_t command_bucket_id)
6202 const struct ofputil_bucket *skip = NULL;
6204 if (command_bucket_id == OFPG15_BUCKET_ALL) {
6208 if (command_bucket_id == OFPG15_BUCKET_FIRST) {
6209 if (!list_is_empty(&ofgroup->buckets)) {
6210 skip = ofputil_bucket_list_front(&ofgroup->buckets);
6212 } else if (command_bucket_id == OFPG15_BUCKET_LAST) {
6213 if (!list_is_empty(&ofgroup->buckets)) {
6214 skip = ofputil_bucket_list_back(&ofgroup->buckets);
6217 skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id);
6219 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6223 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip);
6228 /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and
6229 * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code
6232 * Note that the group is re-created and then replaces the old group in
6233 * ofproto's ofgroup hash map. Thus, the group is never altered while users of
6234 * the xlate module hold a pointer to the group. */
6236 modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
6238 struct ofgroup *ofgroup, *new_ofgroup, *retiring;
6241 error = init_group(ofproto, gm, &new_ofgroup);
6246 retiring = new_ofgroup;
6248 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6249 if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) {
6250 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
6254 /* Ofproto's group write lock is held now. */
6255 if (ofgroup->type != gm->type
6256 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6257 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6261 /* Manipulate bucket list for bucket commands */
6262 if (gm->command == OFPGC15_INSERT_BUCKET) {
6263 error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup,
6264 gm->command_bucket_id);
6265 } else if (gm->command == OFPGC15_REMOVE_BUCKET) {
6266 error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup,
6267 gm->command_bucket_id);
6273 /* The group creation time does not change during modification. */
6274 *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created;
6275 *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec();
6277 error = ofproto->ofproto_class->group_modify(new_ofgroup);
6283 /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */
6284 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6285 hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node,
6286 hash_int(new_ofgroup->group_id, 0));
6287 if (ofgroup->type != new_ofgroup->type) {
6288 ofproto->n_groups[ofgroup->type]--;
6289 ofproto->n_groups[new_ofgroup->type]++;
6293 ofproto_group_unref(retiring);
6294 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6299 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
6300 OVS_RELEASES(ofproto->groups_rwlock)
6303 struct ofputil_flow_mod fm;
6305 /* Delete all flow entries containing this group in a group action */
6306 match_init_catchall(&match);
6307 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
6308 fm.delete_reason = OFPRR_GROUP_DELETE;
6309 fm.out_group = ofgroup->group_id;
6310 handle_flow_mod__(ofproto, &fm, NULL);
6312 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6313 /* No-one can find this group any more. */
6314 ofproto->n_groups[ofgroup->type]--;
6315 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6316 ofproto_group_unref(ofgroup);
6319 /* Implements OFPGC11_DELETE. */
6321 delete_group(struct ofproto *ofproto, uint32_t group_id)
6323 struct ofgroup *ofgroup;
6325 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6326 if (group_id == OFPG_ALL) {
6328 struct hmap_node *node = hmap_first(&ofproto->groups);
6332 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
6333 delete_group__(ofproto, ofgroup);
6334 /* Lock for each node separately, so that we will not jam the
6335 * other threads for too long time. */
6336 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6339 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
6340 hash_int(group_id, 0), &ofproto->groups) {
6341 if (ofgroup->group_id == group_id) {
6342 delete_group__(ofproto, ofgroup);
6347 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6351 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6353 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6354 struct ofputil_group_mod gm;
6357 error = reject_slave_controller(ofconn);
6362 error = ofputil_decode_group_mod(oh, &gm);
6367 switch (gm.command) {
6369 return add_group(ofproto, &gm);
6371 case OFPGC11_MODIFY:
6372 return modify_group(ofproto, &gm);
6374 case OFPGC11_DELETE:
6375 delete_group(ofproto, gm.group_id);
6378 case OFPGC15_INSERT_BUCKET:
6379 return modify_group(ofproto, &gm);
6381 case OFPGC15_REMOVE_BUCKET:
6382 return modify_group(ofproto, &gm);
6385 if (gm.command > OFPGC11_DELETE) {
6386 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
6387 ofproto->name, gm.command);
6389 return OFPERR_OFPGMFC_BAD_COMMAND;
6393 enum ofputil_table_miss
6394 ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
6396 enum ofputil_table_miss value;
6398 atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value);
6403 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
6405 if (!check_table_id(ofproto, tm->table_id)) {
6406 return OFPERR_OFPTMFC_BAD_TABLE;
6407 } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) {
6408 if (tm->table_id == OFPTT_ALL) {
6410 for (i = 0; i < ofproto->n_tables; i++) {
6411 atomic_store_relaxed(&ofproto->tables[i].miss_config,
6415 atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config,
6423 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6425 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6426 struct ofputil_table_mod tm;
6429 error = reject_slave_controller(ofconn);
6434 error = ofputil_decode_table_mod(oh, &tm);
6439 return table_mod(ofproto, &tm);
6443 do_bundle_flow_mod_begin(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6444 struct ofp_bundle_entry *be)
6445 OVS_REQUIRES(ofproto_mutex)
6447 switch (fm->command) {
6449 return add_flow_begin(ofproto, fm, &be->rule, &be->modify);
6452 return modify_flows_begin_loose(ofproto, fm, &be->rules);
6454 case OFPFC_MODIFY_STRICT:
6455 return modify_flow_begin_strict(ofproto, fm, &be->rules);
6458 return delete_flows_begin_loose(ofproto, fm, &be->rules);
6460 case OFPFC_DELETE_STRICT:
6461 return delete_flow_begin_strict(ofproto, fm, &be->rules);
6464 return OFPERR_OFPFMFC_BAD_COMMAND;
6468 do_bundle_flow_mod_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6469 struct ofp_bundle_entry *be)
6470 OVS_REQUIRES(ofproto_mutex)
6472 switch (fm->command) {
6474 add_flow_revert(ofproto, be->modify ? NULL : be->rule);
6478 case OFPFC_MODIFY_STRICT:
6479 modify_flows_revert(ofproto, &be->rules);
6483 case OFPFC_DELETE_STRICT:
6484 delete_flows_revert(&be->rules);
6493 do_bundle_flow_mod_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
6494 const struct flow_mod_requester *req,
6495 struct ofp_bundle_entry *be)
6496 OVS_REQUIRES(ofproto_mutex)
6498 switch (fm->command) {
6500 add_flow_finish(ofproto, fm, req, be->rule, be->modify);
6504 case OFPFC_MODIFY_STRICT:
6505 modify_flows_finish(ofproto, fm, req, &be->rules);
6509 case OFPFC_DELETE_STRICT:
6510 delete_flows_finish(fm, req, &be->rules);
6518 /* Commit phases (all while locking ofproto_mutex):
6520 * 1. Gather resources - do not send any events or notifications.
6522 * add: Check conflicts, check for a displaced flow. If no displaced flow
6523 * exists, add the new flow, but mark it as "invisible".
6524 * mod: Collect affected flows, Do not modify yet.
6525 * del: Collect affected flows, Do not delete yet.
6527 * 2a. Fail if any errors are found. After this point no errors are possible.
6528 * No visible changes were made, so rollback is minimal (remove added invisible
6529 * flows, revert 'to_be_removed' status of flows).
6531 * 2b. Commit the changes
6533 * add: if have displaced flow, modify it, otherwise mark the new flow as
6535 * mod: Modify the collected flows.
6536 * del: Delete the collected flows.
6539 do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags)
6541 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6542 struct ofp_bundle *bundle;
6543 struct ofp_bundle_entry *be;
6546 bundle = ofconn_get_bundle(ofconn, id);
6549 return OFPERR_OFPBFC_BAD_ID;
6551 if (bundle->flags != flags) {
6552 error = OFPERR_OFPBFC_BAD_FLAGS;
6555 ovs_mutex_lock(&ofproto_mutex);
6556 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6557 if (be->type == OFPTYPE_PORT_MOD) {
6558 /* Not supported yet. */
6559 error = OFPERR_OFPBFC_MSG_FAILED;
6560 } else if (be->type == OFPTYPE_FLOW_MOD) {
6561 error = do_bundle_flow_mod_begin(ofproto, &be->fm, be);
6570 /* Send error referring to the original message. */
6572 ofconn_send_error(ofconn, be->ofp_msg, error);
6573 error = OFPERR_OFPBFC_MSG_FAILED;
6576 /* Revert all previous entires. */
6577 LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) {
6578 if (be->type == OFPTYPE_FLOW_MOD) {
6579 do_bundle_flow_mod_revert(ofproto, &be->fm, be);
6583 /* Finish the changes. */
6584 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6585 if (be->type == OFPTYPE_FLOW_MOD) {
6586 struct flow_mod_requester req = { ofconn, be->ofp_msg };
6588 do_bundle_flow_mod_finish(ofproto, &be->fm, &req, be);
6592 ofmonitor_flush(ofproto->connmgr);
6593 ovs_mutex_unlock(&ofproto_mutex);
6595 run_rule_executes(ofproto);
6598 /* The bundle is discarded regardless the outcome. */
6599 ofp_bundle_remove__(ofconn, bundle, !error);
6604 handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh)
6606 struct ofputil_bundle_ctrl_msg bctrl;
6607 struct ofputil_bundle_ctrl_msg reply;
6611 error = reject_slave_controller(ofconn);
6616 error = ofputil_decode_bundle_ctrl(oh, &bctrl);
6620 /* Atomic updates not supported yet. */
6621 if (bctrl.flags & OFPBF_ATOMIC) {
6622 return OFPERR_OFPBFC_BAD_FLAGS;
6625 reply.bundle_id = bctrl.bundle_id;
6627 switch (bctrl.type) {
6628 case OFPBCT_OPEN_REQUEST:
6629 error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags);
6630 reply.type = OFPBCT_OPEN_REPLY;
6632 case OFPBCT_CLOSE_REQUEST:
6633 error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags);
6634 reply.type = OFPBCT_CLOSE_REPLY;;
6636 case OFPBCT_COMMIT_REQUEST:
6637 error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags);
6638 reply.type = OFPBCT_COMMIT_REPLY;
6640 case OFPBCT_DISCARD_REQUEST:
6641 error = ofp_bundle_discard(ofconn, bctrl.bundle_id);
6642 reply.type = OFPBCT_DISCARD_REPLY;
6645 case OFPBCT_OPEN_REPLY:
6646 case OFPBCT_CLOSE_REPLY:
6647 case OFPBCT_COMMIT_REPLY:
6648 case OFPBCT_DISCARD_REPLY:
6649 return OFPERR_OFPBFC_BAD_TYPE;
6654 buf = ofputil_encode_bundle_ctrl_reply(oh, &reply);
6655 ofconn_send_reply(ofconn, buf);
6661 handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh)
6663 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6665 struct ofputil_bundle_add_msg badd;
6666 struct ofp_bundle_entry *bmsg;
6669 error = reject_slave_controller(ofconn);
6674 error = ofputil_decode_bundle_add(oh, &badd, &type);
6679 bmsg = ofp_bundle_entry_alloc(type, badd.msg);
6681 if (type == OFPTYPE_PORT_MOD) {
6682 error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false);
6683 } else if (type == OFPTYPE_FLOW_MOD) {
6684 struct ofpbuf ofpacts;
6685 uint64_t ofpacts_stub[1024 / 8];
6687 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
6688 error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg,
6689 ofconn_get_protocol(ofconn),
6691 u16_to_ofp(ofproto->max_ports),
6693 /* Move actions to heap. */
6694 bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts);
6696 if (!error && bmsg->fm.ofpacts_len) {
6697 error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts,
6698 bmsg->fm.ofpacts_len);
6705 error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags,
6710 ofp_bundle_entry_free(bmsg);
6717 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
6718 OVS_EXCLUDED(ofproto_mutex)
6720 const struct ofp_header *oh = msg->data;
6724 error = ofptype_decode(&type, oh);
6728 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
6729 && ofpmp_more(oh)) {
6730 /* We have no buffer implementation for multipart requests.
6731 * Report overflow for requests which consists of multiple
6733 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
6737 /* OpenFlow requests. */
6738 case OFPTYPE_ECHO_REQUEST:
6739 return handle_echo_request(ofconn, oh);
6741 case OFPTYPE_FEATURES_REQUEST:
6742 return handle_features_request(ofconn, oh);
6744 case OFPTYPE_GET_CONFIG_REQUEST:
6745 return handle_get_config_request(ofconn, oh);
6747 case OFPTYPE_SET_CONFIG:
6748 return handle_set_config(ofconn, oh);
6750 case OFPTYPE_PACKET_OUT:
6751 return handle_packet_out(ofconn, oh);
6753 case OFPTYPE_PORT_MOD:
6754 return handle_port_mod(ofconn, oh);
6756 case OFPTYPE_FLOW_MOD:
6757 return handle_flow_mod(ofconn, oh);
6759 case OFPTYPE_GROUP_MOD:
6760 return handle_group_mod(ofconn, oh);
6762 case OFPTYPE_TABLE_MOD:
6763 return handle_table_mod(ofconn, oh);
6765 case OFPTYPE_METER_MOD:
6766 return handle_meter_mod(ofconn, oh);
6768 case OFPTYPE_BARRIER_REQUEST:
6769 return handle_barrier_request(ofconn, oh);
6771 case OFPTYPE_ROLE_REQUEST:
6772 return handle_role_request(ofconn, oh);
6774 /* OpenFlow replies. */
6775 case OFPTYPE_ECHO_REPLY:
6778 /* Nicira extension requests. */
6779 case OFPTYPE_FLOW_MOD_TABLE_ID:
6780 return handle_nxt_flow_mod_table_id(ofconn, oh);
6782 case OFPTYPE_SET_FLOW_FORMAT:
6783 return handle_nxt_set_flow_format(ofconn, oh);
6785 case OFPTYPE_SET_PACKET_IN_FORMAT:
6786 return handle_nxt_set_packet_in_format(ofconn, oh);
6788 case OFPTYPE_SET_CONTROLLER_ID:
6789 return handle_nxt_set_controller_id(ofconn, oh);
6791 case OFPTYPE_FLOW_AGE:
6792 /* Nothing to do. */
6795 case OFPTYPE_FLOW_MONITOR_CANCEL:
6796 return handle_flow_monitor_cancel(ofconn, oh);
6798 case OFPTYPE_SET_ASYNC_CONFIG:
6799 return handle_nxt_set_async_config(ofconn, oh);
6801 case OFPTYPE_GET_ASYNC_REQUEST:
6802 return handle_nxt_get_async_request(ofconn, oh);
6804 /* Statistics requests. */
6805 case OFPTYPE_DESC_STATS_REQUEST:
6806 return handle_desc_stats_request(ofconn, oh);
6808 case OFPTYPE_FLOW_STATS_REQUEST:
6809 return handle_flow_stats_request(ofconn, oh);
6811 case OFPTYPE_AGGREGATE_STATS_REQUEST:
6812 return handle_aggregate_stats_request(ofconn, oh);
6814 case OFPTYPE_TABLE_STATS_REQUEST:
6815 return handle_table_stats_request(ofconn, oh);
6817 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
6818 return handle_table_features_request(ofconn, oh);
6820 case OFPTYPE_PORT_STATS_REQUEST:
6821 return handle_port_stats_request(ofconn, oh);
6823 case OFPTYPE_QUEUE_STATS_REQUEST:
6824 return handle_queue_stats_request(ofconn, oh);
6826 case OFPTYPE_PORT_DESC_STATS_REQUEST:
6827 return handle_port_desc_stats_request(ofconn, oh);
6829 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
6830 return handle_flow_monitor_request(ofconn, oh);
6832 case OFPTYPE_METER_STATS_REQUEST:
6833 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
6834 return handle_meter_request(ofconn, oh, type);
6836 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
6837 return handle_meter_features_request(ofconn, oh);
6839 case OFPTYPE_GROUP_STATS_REQUEST:
6840 return handle_group_stats_request(ofconn, oh);
6842 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
6843 return handle_group_desc_stats_request(ofconn, oh);
6845 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
6846 return handle_group_features_stats_request(ofconn, oh);
6848 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
6849 return handle_queue_get_config_request(ofconn, oh);
6851 case OFPTYPE_BUNDLE_CONTROL:
6852 return handle_bundle_control(ofconn, oh);
6854 case OFPTYPE_BUNDLE_ADD_MESSAGE:
6855 return handle_bundle_add(ofconn, oh);
6859 case OFPTYPE_FEATURES_REPLY:
6860 case OFPTYPE_GET_CONFIG_REPLY:
6861 case OFPTYPE_PACKET_IN:
6862 case OFPTYPE_FLOW_REMOVED:
6863 case OFPTYPE_PORT_STATUS:
6864 case OFPTYPE_BARRIER_REPLY:
6865 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
6866 case OFPTYPE_DESC_STATS_REPLY:
6867 case OFPTYPE_FLOW_STATS_REPLY:
6868 case OFPTYPE_QUEUE_STATS_REPLY:
6869 case OFPTYPE_PORT_STATS_REPLY:
6870 case OFPTYPE_TABLE_STATS_REPLY:
6871 case OFPTYPE_AGGREGATE_STATS_REPLY:
6872 case OFPTYPE_PORT_DESC_STATS_REPLY:
6873 case OFPTYPE_ROLE_REPLY:
6874 case OFPTYPE_FLOW_MONITOR_PAUSED:
6875 case OFPTYPE_FLOW_MONITOR_RESUMED:
6876 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
6877 case OFPTYPE_GET_ASYNC_REPLY:
6878 case OFPTYPE_GROUP_STATS_REPLY:
6879 case OFPTYPE_GROUP_DESC_STATS_REPLY:
6880 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
6881 case OFPTYPE_METER_STATS_REPLY:
6882 case OFPTYPE_METER_CONFIG_STATS_REPLY:
6883 case OFPTYPE_METER_FEATURES_STATS_REPLY:
6884 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
6885 case OFPTYPE_ROLE_STATUS:
6887 if (ofpmsg_is_stat_request(oh)) {
6888 return OFPERR_OFPBRC_BAD_STAT;
6890 return OFPERR_OFPBRC_BAD_TYPE;
6896 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
6897 OVS_EXCLUDED(ofproto_mutex)
6899 enum ofperr error = handle_openflow__(ofconn, ofp_msg);
6902 ofconn_send_error(ofconn, ofp_msg->data, error);
6904 COVERAGE_INC(ofproto_recv_openflow);
6907 /* Asynchronous operations. */
6910 send_buffered_packet(const struct flow_mod_requester *req, uint32_t buffer_id,
6912 OVS_REQUIRES(ofproto_mutex)
6914 if (req && req->ofconn && buffer_id != UINT32_MAX) {
6915 struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn);
6916 struct dp_packet *packet;
6920 error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet,
6923 struct rule_execute *re;
6925 ofproto_rule_ref(rule);
6927 re = xmalloc(sizeof *re);
6929 re->in_port = in_port;
6930 re->packet = packet;
6932 if (!guarded_list_push_back(&ofproto->rule_executes,
6933 &re->list_node, 1024)) {
6934 ofproto_rule_unref(rule);
6935 dp_packet_delete(re->packet);
6939 ofconn_send_error(req->ofconn, req->request, error);
6945 pick_datapath_id(const struct ofproto *ofproto)
6947 const struct ofport *port;
6949 port = ofproto_get_port(ofproto, OFPP_LOCAL);
6951 uint8_t ea[ETH_ADDR_LEN];
6954 error = netdev_get_etheraddr(port->netdev, ea);
6956 return eth_addr_to_uint64(ea);
6958 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6959 ofproto->name, netdev_get_name(port->netdev),
6960 ovs_strerror(error));
6962 return ofproto->fallback_dpid;
6966 pick_fallback_dpid(void)
6968 uint8_t ea[ETH_ADDR_LEN];
6969 eth_addr_nicira_random(ea);
6970 return eth_addr_to_uint64(ea);
6973 /* Table overflow policy. */
6975 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6976 * to NULL if the table is not configured to evict rules or if the table
6977 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6978 * or with no timeouts are not evictable.) */
6980 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
6981 OVS_REQUIRES(ofproto_mutex)
6983 struct eviction_group *evg;
6986 if (!table->eviction_fields) {
6990 /* In the common case, the outer and inner loops here will each be entered
6993 * - The inner loop normally "return"s in its first iteration. If the
6994 * eviction group has any evictable rules, then it always returns in
6997 * - The outer loop only iterates more than once if the largest eviction
6998 * group has no evictable rules.
7000 * - The outer loop can exit only if table's 'max_flows' is all filled up
7001 * by unevictable rules. */
7002 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
7005 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
7014 /* Eviction groups. */
7016 /* Returns the priority to use for an eviction_group that contains 'n_rules'
7017 * rules. The priority contains low-order random bits to ensure that eviction
7018 * groups with the same number of rules are prioritized randomly. */
7020 eviction_group_priority(size_t n_rules)
7022 uint16_t size = MIN(UINT16_MAX, n_rules);
7023 return (size << 16) | random_uint16();
7026 /* Updates 'evg', an eviction_group within 'table', following a change that
7027 * adds or removes rules in 'evg'. */
7029 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
7030 OVS_REQUIRES(ofproto_mutex)
7032 heap_change(&table->eviction_groups_by_size, &evg->size_node,
7033 eviction_group_priority(heap_count(&evg->rules)));
7036 /* Destroys 'evg', an eviction_group within 'table':
7038 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
7039 * rules themselves, just removes them from the eviction group.)
7041 * - Removes 'evg' from 'table'.
7045 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
7046 OVS_REQUIRES(ofproto_mutex)
7048 while (!heap_is_empty(&evg->rules)) {
7051 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
7052 rule->eviction_group = NULL;
7054 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
7055 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
7056 heap_destroy(&evg->rules);
7060 /* Removes 'rule' from its eviction group, if any. */
7062 eviction_group_remove_rule(struct rule *rule)
7063 OVS_REQUIRES(ofproto_mutex)
7065 if (rule->eviction_group) {
7066 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7067 struct eviction_group *evg = rule->eviction_group;
7069 rule->eviction_group = NULL;
7070 heap_remove(&evg->rules, &rule->evg_node);
7071 if (heap_is_empty(&evg->rules)) {
7072 eviction_group_destroy(table, evg);
7074 eviction_group_resized(table, evg);
7079 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
7080 * returns the hash value. */
7082 eviction_group_hash_rule(struct rule *rule)
7083 OVS_REQUIRES(ofproto_mutex)
7085 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7086 const struct mf_subfield *sf;
7090 hash = table->eviction_group_id_basis;
7091 miniflow_expand(&rule->cr.match.flow, &flow);
7092 for (sf = table->eviction_fields;
7093 sf < &table->eviction_fields[table->n_eviction_fields];
7096 if (mf_are_prereqs_ok(sf->field, &flow)) {
7097 union mf_value value;
7099 mf_get_value(sf->field, &flow, &value);
7101 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
7103 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
7104 unsigned int start = sf->ofs + sf->n_bits;
7105 bitwise_zero(&value, sf->field->n_bytes, start,
7106 sf->field->n_bytes * 8 - start);
7108 hash = hash_bytes(&value, sf->field->n_bytes, hash);
7110 hash = hash_int(hash, 0);
7117 /* Returns an eviction group within 'table' with the given 'id', creating one
7119 static struct eviction_group *
7120 eviction_group_find(struct oftable *table, uint32_t id)
7121 OVS_REQUIRES(ofproto_mutex)
7123 struct eviction_group *evg;
7125 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
7129 evg = xmalloc(sizeof *evg);
7130 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
7131 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
7132 eviction_group_priority(0));
7133 heap_init(&evg->rules);
7138 /* Returns an eviction priority for 'rule'. The return value should be
7139 * interpreted so that higher priorities make a rule more attractive candidates
7141 * Called only if have a timeout. */
7143 rule_eviction_priority(struct ofproto *ofproto, struct rule *rule)
7144 OVS_REQUIRES(ofproto_mutex)
7146 long long int expiration = LLONG_MAX;
7147 long long int modified;
7148 uint32_t expiration_offset;
7150 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
7151 ovs_mutex_lock(&rule->mutex);
7152 modified = rule->modified;
7153 ovs_mutex_unlock(&rule->mutex);
7155 if (rule->hard_timeout) {
7156 expiration = modified + rule->hard_timeout * 1000;
7158 if (rule->idle_timeout) {
7159 uint64_t packets, bytes;
7161 long long int idle_expiration;
7163 ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used);
7164 idle_expiration = used + rule->idle_timeout * 1000;
7165 expiration = MIN(expiration, idle_expiration);
7168 if (expiration == LLONG_MAX) {
7172 /* Calculate the time of expiration as a number of (approximate) seconds
7173 * after program startup.
7175 * This should work OK for program runs that last UINT32_MAX seconds or
7176 * less. Therefore, please restart OVS at least once every 136 years. */
7177 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
7179 /* Invert the expiration offset because we're using a max-heap. */
7180 return UINT32_MAX - expiration_offset;
7183 /* Adds 'rule' to an appropriate eviction group for its oftable's
7184 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
7185 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
7188 * The caller must ensure that 'rule' is not already in an eviction group. */
7190 eviction_group_add_rule(struct rule *rule)
7191 OVS_REQUIRES(ofproto_mutex)
7193 struct ofproto *ofproto = rule->ofproto;
7194 struct oftable *table = &ofproto->tables[rule->table_id];
7197 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
7198 * so no additional protection is needed. */
7199 has_timeout = rule->hard_timeout || rule->idle_timeout;
7201 if (table->eviction_fields && has_timeout) {
7202 struct eviction_group *evg;
7204 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
7206 rule->eviction_group = evg;
7207 heap_insert(&evg->rules, &rule->evg_node,
7208 rule_eviction_priority(ofproto, rule));
7209 eviction_group_resized(table, evg);
7215 /* Initializes 'table'. */
7217 oftable_init(struct oftable *table)
7219 memset(table, 0, sizeof *table);
7220 classifier_init(&table->cls, flow_segment_u64s);
7221 table->max_flows = UINT_MAX;
7222 atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
7224 classifier_set_prefix_fields(&table->cls, default_prefix_fields,
7225 ARRAY_SIZE(default_prefix_fields));
7227 atomic_init(&table->n_matched, 0);
7228 atomic_init(&table->n_missed, 0);
7231 /* Destroys 'table', including its classifier and eviction groups.
7233 * The caller is responsible for freeing 'table' itself. */
7235 oftable_destroy(struct oftable *table)
7237 ovs_assert(classifier_is_empty(&table->cls));
7238 oftable_disable_eviction(table);
7239 classifier_destroy(&table->cls);
7243 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
7244 * string, then 'table' will use its default name.
7246 * This only affects the name exposed for a table exposed through the OpenFlow
7247 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
7249 oftable_set_name(struct oftable *table, const char *name)
7251 if (name && name[0]) {
7252 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
7253 if (!table->name || strncmp(name, table->name, len)) {
7255 table->name = xmemdup0(name, len);
7263 /* oftables support a choice of two policies when adding a rule would cause the
7264 * number of flows in the table to exceed the configured maximum number: either
7265 * they can refuse to add the new flow or they can evict some existing flow.
7266 * This function configures the former policy on 'table'. */
7268 oftable_disable_eviction(struct oftable *table)
7269 OVS_REQUIRES(ofproto_mutex)
7271 if (table->eviction_fields) {
7272 struct eviction_group *evg, *next;
7274 HMAP_FOR_EACH_SAFE (evg, next, id_node,
7275 &table->eviction_groups_by_id) {
7276 eviction_group_destroy(table, evg);
7278 hmap_destroy(&table->eviction_groups_by_id);
7279 heap_destroy(&table->eviction_groups_by_size);
7281 free(table->eviction_fields);
7282 table->eviction_fields = NULL;
7283 table->n_eviction_fields = 0;
7287 /* oftables support a choice of two policies when adding a rule would cause the
7288 * number of flows in the table to exceed the configured maximum number: either
7289 * they can refuse to add the new flow or they can evict some existing flow.
7290 * This function configures the latter policy on 'table', with fairness based
7291 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
7292 * 'n_fields' as 0 disables fairness.) */
7294 oftable_enable_eviction(struct oftable *table,
7295 const struct mf_subfield *fields, size_t n_fields)
7296 OVS_REQUIRES(ofproto_mutex)
7300 if (table->eviction_fields
7301 && n_fields == table->n_eviction_fields
7303 || !memcmp(fields, table->eviction_fields,
7304 n_fields * sizeof *fields))) {
7309 oftable_disable_eviction(table);
7311 table->n_eviction_fields = n_fields;
7312 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
7314 table->eviction_group_id_basis = random_uint32();
7315 hmap_init(&table->eviction_groups_by_id);
7316 heap_init(&table->eviction_groups_by_size);
7318 CLS_FOR_EACH (rule, cr, &table->cls) {
7319 eviction_group_add_rule(rule);
7323 /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted
7324 * it to the classifier. */
7326 ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule)
7327 OVS_REQUIRES(ofproto_mutex)
7329 const struct rule_actions *actions = rule_get_actions(rule);
7331 if (rule->hard_timeout || rule->idle_timeout) {
7332 list_insert(&ofproto->expirable, &rule->expirable);
7334 cookies_insert(ofproto, rule);
7335 eviction_group_add_rule(rule);
7336 if (actions->has_meter) {
7337 meter_insert_rule(rule);
7341 /* Removes 'rule' from the ofproto data structures AFTER caller has removed
7342 * it from the classifier. */
7344 ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule)
7345 OVS_REQUIRES(ofproto_mutex)
7347 cookies_remove(ofproto, rule);
7349 eviction_group_remove_rule(rule);
7350 if (!list_is_empty(&rule->expirable)) {
7351 list_remove(&rule->expirable);
7353 if (!list_is_empty(&rule->meter_list_node)) {
7354 list_remove(&rule->meter_list_node);
7355 list_init(&rule->meter_list_node);
7360 oftable_remove_rule(struct rule *rule)
7361 OVS_REQUIRES(ofproto_mutex)
7363 struct classifier *cls = &rule->ofproto->tables[rule->table_id].cls;
7365 if (classifier_remove(cls, &rule->cr)) {
7366 ofproto_rule_remove__(rule->ofproto, rule);
7370 /* unixctl commands. */
7373 ofproto_lookup(const char *name)
7375 struct ofproto *ofproto;
7377 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
7379 if (!strcmp(ofproto->name, name)) {
7387 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
7388 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7390 struct ofproto *ofproto;
7394 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
7395 ds_put_format(&results, "%s\n", ofproto->name);
7397 unixctl_command_reply(conn, ds_cstr(&results));
7398 ds_destroy(&results);
7402 ofproto_unixctl_init(void)
7404 static bool registered;
7410 unixctl_command_register("ofproto/list", "", 0, 0,
7411 ofproto_unixctl_list, NULL);
7414 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
7416 * This is deprecated. It is only for compatibility with broken device drivers
7417 * in old versions of Linux that do not properly support VLANs when VLAN
7418 * devices are not used. When broken device drivers are no longer in
7419 * widespread use, we will delete these interfaces. */
7421 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
7422 * (exactly) by an OpenFlow rule in 'ofproto'. */
7424 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
7427 struct cls_rule target;
7428 const struct oftable *oftable;
7430 match_init_catchall(&match);
7431 match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI));
7432 cls_rule_init(&target, &match, 0);
7434 free(ofproto->vlan_bitmap);
7435 ofproto->vlan_bitmap = bitmap_allocate(4096);
7436 ofproto->vlans_changed = false;
7438 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
7441 CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) {
7442 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
7443 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
7445 bitmap_set1(vlan_bitmap, vid);
7446 bitmap_set1(ofproto->vlan_bitmap, vid);
7451 cls_rule_destroy(&target);
7454 /* Returns true if new VLANs have come into use by the flow table since the
7455 * last call to ofproto_get_vlan_usage().
7457 * We don't track when old VLANs stop being used. */
7459 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
7461 return ofproto->vlans_changed;
7464 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
7465 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
7466 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
7467 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
7468 * then the VLAN device is un-enslaved. */
7470 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
7471 ofp_port_t realdev_ofp_port, int vid)
7473 struct ofport *ofport;
7476 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
7478 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
7480 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
7481 ofproto->name, vlandev_ofp_port);
7485 if (!ofproto->ofproto_class->set_realdev) {
7486 if (!vlandev_ofp_port) {
7489 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
7493 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
7495 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
7496 ofproto->name, vlandev_ofp_port,
7497 netdev_get_name(ofport->netdev), ovs_strerror(error));