2 * Copyright (c) 2009-2016 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 "tun-metadata.h"
60 #include "unaligned.h"
62 #include "openvswitch/vlog.h"
65 VLOG_DEFINE_THIS_MODULE(ofproto);
67 COVERAGE_DEFINE(ofproto_flush);
68 COVERAGE_DEFINE(ofproto_packet_out);
69 COVERAGE_DEFINE(ofproto_queue_req);
70 COVERAGE_DEFINE(ofproto_recv_openflow);
71 COVERAGE_DEFINE(ofproto_reinit_ports);
72 COVERAGE_DEFINE(ofproto_update_port);
74 /* Default fields to use for prefix tries in each flow table, unless something
75 * else is configured. */
76 const enum mf_field_id default_prefix_fields[2] =
77 { MFF_IPV4_DST, MFF_IPV4_SRC };
80 static void oftable_init(struct oftable *);
81 static void oftable_destroy(struct oftable *);
83 static void oftable_set_name(struct oftable *, const char *name);
85 static enum ofperr evict_rules_from_table(struct oftable *)
86 OVS_REQUIRES(ofproto_mutex);
87 static void oftable_configure_eviction(struct oftable *,
88 unsigned int eviction,
89 const struct mf_subfield *fields,
91 OVS_REQUIRES(ofproto_mutex);
93 /* This is the only combination of OpenFlow eviction flags that OVS supports: a
94 * combination of OF1.4+ importance, the remaining lifetime of the flow, and
95 * fairness based on user-specified fields. */
96 #define OFPROTO_EVICTION_FLAGS \
97 (OFPTMPEF14_OTHER | OFPTMPEF14_IMPORTANCE | OFPTMPEF14_LIFETIME)
99 /* A set of rules within a single OpenFlow table (oftable) that have the same
100 * values for the oftable's eviction_fields. A rule to be evicted, when one is
101 * needed, is taken from the eviction group that contains the greatest number
104 * An oftable owns any number of eviction groups, each of which contains any
107 * Membership in an eviction group is imprecise, based on the hash of the
108 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
109 * That is, if two rules have different eviction_fields, but those
110 * eviction_fields hash to the same value, then they will belong to the same
111 * eviction_group anyway.
113 * (When eviction is not enabled on an oftable, we don't track any eviction
114 * groups, to save time and space.) */
115 struct eviction_group {
116 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
117 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
118 struct heap rules; /* Contains "struct rule"s. */
121 static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
122 OVS_REQUIRES(ofproto_mutex);
123 static uint64_t rule_eviction_priority(struct ofproto *ofproto, struct rule *)
124 OVS_REQUIRES(ofproto_mutex);
125 static void eviction_group_add_rule(struct rule *)
126 OVS_REQUIRES(ofproto_mutex);
127 static void eviction_group_remove_rule(struct rule *)
128 OVS_REQUIRES(ofproto_mutex);
130 /* Criteria that flow_mod and other operations use for selecting rules on
131 * which to operate. */
132 struct rule_criteria {
133 /* An OpenFlow table or 255 for all tables. */
136 /* OpenFlow matching criteria. Interpreted different in "loose" way by
137 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
138 * defined in the OpenFlow spec. */
140 cls_version_t version;
142 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
143 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
144 * The rule will not be selected if M is 1 and B != C. */
146 ovs_be64 cookie_mask;
148 /* Selection based on actions within a rule:
150 * If out_port != OFPP_ANY, selects only rules that output to out_port.
151 * If out_group != OFPG_ALL, select only rules that output to out_group. */
155 /* If true, collects only rules that are modifiable. */
157 bool include_readonly;
160 static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
161 const struct match *match, int priority,
162 cls_version_t version,
163 ovs_be64 cookie, ovs_be64 cookie_mask,
164 ofp_port_t out_port, uint32_t out_group);
165 static void rule_criteria_require_rw(struct rule_criteria *,
166 bool can_write_readonly);
167 static void rule_criteria_destroy(struct rule_criteria *);
169 static enum ofperr collect_rules_loose(struct ofproto *,
170 const struct rule_criteria *,
171 struct rule_collection *);
173 /* A packet that needs to be passed to rule_execute().
175 * (We can't do this immediately from ofopgroup_complete() because that holds
176 * ofproto_mutex, which rule_execute() needs released.) */
177 struct rule_execute {
178 struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */
179 struct rule *rule; /* Owns a reference to the rule. */
181 struct dp_packet *packet; /* Owns the packet. */
184 static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
185 static void destroy_rule_executes(struct ofproto *);
187 struct learned_cookie {
189 /* In struct ofproto's 'learned_cookies' hmap. */
190 struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex);
192 /* In 'dead_cookies' list when removed from hmap. */
193 struct ovs_list list_node;
197 ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex);
198 uint8_t table_id OVS_GUARDED_BY(ofproto_mutex);
200 /* Number of references from "learn" actions.
202 * When this drops to 0, all of the flows in 'table_id' with the specified
203 * 'cookie' are deleted. */
204 int n OVS_GUARDED_BY(ofproto_mutex);
207 static const struct ofpact_learn *next_learn_with_delete(
208 const struct rule_actions *, const struct ofpact_learn *start);
210 static void learned_cookies_inc(struct ofproto *, const struct rule_actions *)
211 OVS_REQUIRES(ofproto_mutex);
212 static void learned_cookies_dec(struct ofproto *, const struct rule_actions *,
213 struct ovs_list *dead_cookies)
214 OVS_REQUIRES(ofproto_mutex);
215 static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies)
216 OVS_REQUIRES(ofproto_mutex);
219 static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
220 static void ofport_destroy(struct ofport *);
222 static int update_port(struct ofproto *, const char *devname);
223 static int init_ports(struct ofproto *);
224 static void reinit_ports(struct ofproto *);
226 static long long int ofport_get_usage(const struct ofproto *,
227 ofp_port_t ofp_port);
228 static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
229 long long int last_used);
230 static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
234 * Keeps track of the currently used and recently used ofport values and is
235 * used to prevent immediate recycling of ofport values. */
236 struct ofport_usage {
237 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
238 ofp_port_t ofp_port; /* OpenFlow port number. */
239 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
240 represents in-use ofports. */
244 static void ofproto_rule_send_removed(struct rule *)
245 OVS_EXCLUDED(ofproto_mutex);
246 static bool rule_is_readonly(const struct rule *);
247 static void ofproto_rule_insert__(struct ofproto *, struct rule *)
248 OVS_REQUIRES(ofproto_mutex);
249 static void ofproto_rule_remove__(struct ofproto *, struct rule *)
250 OVS_REQUIRES(ofproto_mutex);
252 /* The source of a flow_mod request, in the code that processes flow_mods.
254 * A flow table modification request can be generated externally, via OpenFlow,
255 * or internally through a function call. This structure indicates the source
256 * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't
257 * meaningful and thus supplied as NULL. */
258 struct flow_mod_requester {
259 struct ofconn *ofconn; /* Connection on which flow_mod arrived. */
260 const struct ofp_header *request;
264 static enum ofperr replace_rule_create(struct ofproto *,
265 struct ofputil_flow_mod *,
266 struct cls_rule *cr, uint8_t table_id,
267 struct rule *old_rule,
268 struct rule **new_rule)
269 OVS_REQUIRES(ofproto_mutex);
271 static void replace_rule_start(struct ofproto *, cls_version_t version,
272 struct rule *old_rule, struct rule *new_rule,
273 struct cls_conjunction *, size_t n_conjs)
274 OVS_REQUIRES(ofproto_mutex);
276 static void replace_rule_revert(struct ofproto *, struct rule *old_rule,
277 struct rule *new_rule)
278 OVS_REQUIRES(ofproto_mutex);
280 static void replace_rule_finish(struct ofproto *, struct ofputil_flow_mod *,
281 const struct flow_mod_requester *,
282 struct rule *old_rule, struct rule *new_rule,
283 struct ovs_list *dead_cookies)
284 OVS_REQUIRES(ofproto_mutex);
285 static void delete_flows__(struct rule_collection *,
286 enum ofp_flow_removed_reason,
287 const struct flow_mod_requester *)
288 OVS_REQUIRES(ofproto_mutex);
290 static void send_buffered_packet(const struct flow_mod_requester *,
291 uint32_t buffer_id, struct rule *)
292 OVS_REQUIRES(ofproto_mutex);
294 static bool ofproto_group_exists__(const struct ofproto *ofproto,
296 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
297 static bool ofproto_group_exists(const struct ofproto *ofproto,
299 OVS_EXCLUDED(ofproto->groups_rwlock);
300 static enum ofperr add_group(struct ofproto *,
301 const struct ofputil_group_mod *);
302 static void handle_openflow(struct ofconn *, const struct ofpbuf *);
303 static enum ofperr ofproto_flow_mod_start(struct ofproto *,
304 struct ofproto_flow_mod *)
305 OVS_REQUIRES(ofproto_mutex);
306 static void ofproto_flow_mod_finish(struct ofproto *,
307 struct ofproto_flow_mod *,
308 const struct flow_mod_requester *)
309 OVS_REQUIRES(ofproto_mutex);
310 static enum ofperr handle_flow_mod__(struct ofproto *,
311 struct ofproto_flow_mod *,
312 const struct flow_mod_requester *)
313 OVS_EXCLUDED(ofproto_mutex);
314 static void calc_duration(long long int start, long long int now,
315 uint32_t *sec, uint32_t *nsec);
318 static uint64_t pick_datapath_id(const struct ofproto *);
319 static uint64_t pick_fallback_dpid(void);
320 static void ofproto_destroy__(struct ofproto *);
321 static void update_mtu(struct ofproto *, struct ofport *);
322 static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
323 static void meter_insert_rule(struct rule *);
326 static void ofproto_unixctl_init(void);
328 /* All registered ofproto classes, in probe order. */
329 static const struct ofproto_class **ofproto_classes;
330 static size_t n_ofproto_classes;
331 static size_t allocated_ofproto_classes;
333 /* Global lock that protects all flow table operations. */
334 struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
336 unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
337 unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
339 size_t n_handlers, n_revalidators;
343 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
344 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
346 /* Initial mappings of port to OpenFlow number mappings. */
347 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
349 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
351 /* The default value of true waits for flow restore. */
352 static bool flow_restore_wait = true;
354 /* Must be called to initialize the ofproto library.
356 * The caller may pass in 'iface_hints', which contains an shash of
357 * "iface_hint" elements indexed by the interface's name. The provider
358 * may use these hints to describe the startup configuration in order to
359 * reinitialize its state. The caller owns the provided data, so a
360 * provider will make copies of anything required. An ofproto provider
361 * will remove any existing state that is not described by the hint, and
362 * may choose to remove it all. */
364 ofproto_init(const struct shash *iface_hints)
366 struct shash_node *node;
369 ofproto_class_register(&ofproto_dpif_class);
371 /* Make a local copy, since we don't own 'iface_hints' elements. */
372 SHASH_FOR_EACH(node, iface_hints) {
373 const struct iface_hint *orig_hint = node->data;
374 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
375 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
377 new_hint->br_name = xstrdup(orig_hint->br_name);
378 new_hint->br_type = xstrdup(br_type);
379 new_hint->ofp_port = orig_hint->ofp_port;
381 shash_add(&init_ofp_ports, node->name, new_hint);
384 for (i = 0; i < n_ofproto_classes; i++) {
385 ofproto_classes[i]->init(&init_ofp_ports);
388 ofproto_unixctl_init();
391 /* 'type' should be a normalized datapath type, as returned by
392 * ofproto_normalize_type(). Returns the corresponding ofproto_class
393 * structure, or a null pointer if there is none registered for 'type'. */
394 static const struct ofproto_class *
395 ofproto_class_find__(const char *type)
399 for (i = 0; i < n_ofproto_classes; i++) {
400 const struct ofproto_class *class = ofproto_classes[i];
405 class->enumerate_types(&types);
406 found = sset_contains(&types, type);
407 sset_destroy(&types);
413 VLOG_WARN("unknown datapath type %s", type);
417 /* Registers a new ofproto class. After successful registration, new ofprotos
418 * of that type can be created using ofproto_create(). */
420 ofproto_class_register(const struct ofproto_class *new_class)
424 for (i = 0; i < n_ofproto_classes; i++) {
425 if (ofproto_classes[i] == new_class) {
430 if (n_ofproto_classes >= allocated_ofproto_classes) {
431 ofproto_classes = x2nrealloc(ofproto_classes,
432 &allocated_ofproto_classes,
433 sizeof *ofproto_classes);
435 ofproto_classes[n_ofproto_classes++] = new_class;
439 /* Unregisters a datapath provider. 'type' must have been previously
440 * registered and not currently be in use by any ofprotos. After
441 * unregistration new datapaths of that type cannot be opened using
442 * ofproto_create(). */
444 ofproto_class_unregister(const struct ofproto_class *class)
448 for (i = 0; i < n_ofproto_classes; i++) {
449 if (ofproto_classes[i] == class) {
450 for (i++; i < n_ofproto_classes; i++) {
451 ofproto_classes[i - 1] = ofproto_classes[i];
457 VLOG_WARN("attempted to unregister an ofproto class that is not "
462 /* Clears 'types' and enumerates all registered ofproto types into it. The
463 * caller must first initialize the sset. */
465 ofproto_enumerate_types(struct sset *types)
470 for (i = 0; i < n_ofproto_classes; i++) {
471 ofproto_classes[i]->enumerate_types(types);
475 /* Returns the fully spelled out name for the given ofproto 'type'.
477 * Normalized type string can be compared with strcmp(). Unnormalized type
478 * string might be the same even if they have different spellings. */
480 ofproto_normalize_type(const char *type)
482 return type && type[0] ? type : "system";
485 /* Clears 'names' and enumerates the names of all known created ofprotos with
486 * the given 'type'. The caller must first initialize the sset. Returns 0 if
487 * successful, otherwise a positive errno value.
489 * Some kinds of datapaths might not be practically enumerable. This is not
490 * considered an error. */
492 ofproto_enumerate_names(const char *type, struct sset *names)
494 const struct ofproto_class *class = ofproto_class_find__(type);
495 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
499 ofproto_bump_tables_version(struct ofproto *ofproto)
501 ++ofproto->tables_version;
502 ofproto->ofproto_class->set_tables_version(ofproto,
503 ofproto->tables_version);
507 ofproto_create(const char *datapath_name, const char *datapath_type,
508 struct ofproto **ofprotop)
510 const struct ofproto_class *class;
511 struct ofproto *ofproto;
517 datapath_type = ofproto_normalize_type(datapath_type);
518 class = ofproto_class_find__(datapath_type);
520 VLOG_WARN("could not create datapath %s of unknown type %s",
521 datapath_name, datapath_type);
525 ofproto = class->alloc();
527 VLOG_ERR("failed to allocate datapath %s of type %s",
528 datapath_name, datapath_type);
533 ovs_mutex_lock(&ofproto_mutex);
534 memset(ofproto, 0, sizeof *ofproto);
535 ofproto->ofproto_class = class;
536 ofproto->name = xstrdup(datapath_name);
537 ofproto->type = xstrdup(datapath_type);
538 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
539 hash_string(ofproto->name, 0));
540 ofproto->datapath_id = 0;
541 ofproto->forward_bpdu = false;
542 ofproto->fallback_dpid = pick_fallback_dpid();
543 ofproto->mfr_desc = NULL;
544 ofproto->hw_desc = NULL;
545 ofproto->sw_desc = NULL;
546 ofproto->serial_desc = NULL;
547 ofproto->dp_desc = NULL;
548 ofproto->frag_handling = OFPUTIL_FRAG_NORMAL;
549 hmap_init(&ofproto->ports);
550 hmap_init(&ofproto->ofport_usage);
551 shash_init(&ofproto->port_by_name);
552 simap_init(&ofproto->ofp_requests);
553 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
554 ofproto->eviction_group_timer = LLONG_MIN;
555 ofproto->tables = NULL;
556 ofproto->n_tables = 0;
557 ofproto->tables_version = CLS_MIN_VERSION;
558 hindex_init(&ofproto->cookies);
559 hmap_init(&ofproto->learned_cookies);
560 list_init(&ofproto->expirable);
561 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
562 guarded_list_init(&ofproto->rule_executes);
563 ofproto->vlan_bitmap = NULL;
564 ofproto->vlans_changed = false;
565 ofproto->min_mtu = INT_MAX;
566 ovs_rwlock_init(&ofproto->groups_rwlock);
567 hmap_init(&ofproto->groups);
568 ovs_mutex_unlock(&ofproto_mutex);
569 ofproto->ogf.types = 0xf;
570 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
571 OFPGFC_SELECT_WEIGHT;
572 for (i = 0; i < 4; i++) {
573 ofproto->ogf.max_groups[i] = OFPG_MAX;
574 ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
578 error = ofproto->ofproto_class->construct(ofproto);
580 VLOG_ERR("failed to open datapath %s: %s",
581 datapath_name, ovs_strerror(error));
582 connmgr_destroy(ofproto->connmgr);
583 ofproto_destroy__(ofproto);
587 /* Check that hidden tables, if any, are at the end. */
588 ovs_assert(ofproto->n_tables);
589 for (i = 0; i + 1 < ofproto->n_tables; i++) {
590 enum oftable_flags flags = ofproto->tables[i].flags;
591 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
593 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
596 ofproto->datapath_id = pick_datapath_id(ofproto);
599 /* Initialize meters table. */
600 if (ofproto->ofproto_class->meter_get_features) {
601 ofproto->ofproto_class->meter_get_features(ofproto,
602 &ofproto->meter_features);
604 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
606 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
607 * sizeof(struct meter *));
609 /* Set the initial tables version. */
610 ofproto_bump_tables_version(ofproto);
616 /* Must be called (only) by an ofproto implementation in its constructor
617 * function. See the large comment on 'construct' in struct ofproto_class for
620 ofproto_init_tables(struct ofproto *ofproto, int n_tables)
622 struct oftable *table;
624 ovs_assert(!ofproto->n_tables);
625 ovs_assert(n_tables >= 1 && n_tables <= 255);
627 ofproto->n_tables = n_tables;
628 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
629 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
634 /* To be optionally called (only) by an ofproto implementation in its
635 * constructor function. See the large comment on 'construct' in struct
636 * ofproto_class for details.
638 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
639 * will then ensure that actions passed into the ofproto implementation will
640 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
641 * function is not called, there will be no such restriction.
643 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
644 * the 'max_ports' restriction. */
646 ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
648 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
649 ofproto->max_ports = max_ports;
653 ofproto_get_datapath_id(const struct ofproto *ofproto)
655 return ofproto->datapath_id;
659 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
661 uint64_t old_dpid = p->datapath_id;
662 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
663 if (p->datapath_id != old_dpid) {
664 /* Force all active connections to reconnect, since there is no way to
665 * notify a controller that the datapath ID has changed. */
666 ofproto_reconnect_controllers(p);
671 ofproto_set_controllers(struct ofproto *p,
672 const struct ofproto_controller *controllers,
673 size_t n_controllers, uint32_t allowed_versions)
675 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
680 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
682 connmgr_set_fail_mode(p->connmgr, fail_mode);
685 /* Drops the connections between 'ofproto' and all of its controllers, forcing
686 * them to reconnect. */
688 ofproto_reconnect_controllers(struct ofproto *ofproto)
690 connmgr_reconnect(ofproto->connmgr);
693 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
694 * in-band control should guarantee access, in the same way that in-band
695 * control guarantees access to OpenFlow controllers. */
697 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
698 const struct sockaddr_in *extras, size_t n)
700 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
703 /* Sets the OpenFlow queue used by flows set up by in-band control on
704 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
705 * flows will use the default queue. */
707 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
709 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
712 /* Sets the number of flows at which eviction from the kernel flow table
715 ofproto_set_flow_limit(unsigned limit)
717 ofproto_flow_limit = limit;
720 /* Sets the maximum idle time for flows in the datapath before they are
723 ofproto_set_max_idle(unsigned max_idle)
725 ofproto_max_idle = max_idle;
728 /* If forward_bpdu is true, the NORMAL action will forward frames with
729 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
730 * the NORMAL action will drop these frames. */
732 ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
734 bool old_val = ofproto->forward_bpdu;
735 ofproto->forward_bpdu = forward_bpdu;
736 if (old_val != ofproto->forward_bpdu) {
737 if (ofproto->ofproto_class->forward_bpdu_changed) {
738 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
743 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
744 * 'idle_time', in seconds, and the maximum number of MAC table entries to
747 ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
750 if (ofproto->ofproto_class->set_mac_table_config) {
751 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
756 /* Multicast snooping configuration. */
758 /* Configures multicast snooping on 'ofproto' using the settings
759 * defined in 's'. If 's' is NULL, disables multicast snooping.
761 * Returns 0 if successful, otherwise a positive errno value. */
763 ofproto_set_mcast_snooping(struct ofproto *ofproto,
764 const struct ofproto_mcast_snooping_settings *s)
766 return (ofproto->ofproto_class->set_mcast_snooping
767 ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
771 /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'.
773 * Returns 0 if successful, otherwise a positive errno value.*/
775 ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux,
776 const struct ofproto_mcast_snooping_port_settings *s)
778 return (ofproto->ofproto_class->set_mcast_snooping_port
779 ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s)
784 ofproto_set_n_dpdk_rxqs(int n_rxqs)
786 n_dpdk_rxqs = MAX(n_rxqs, 0);
790 ofproto_set_cpu_mask(const char *cmask)
794 pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
798 ofproto_set_threads(int n_handlers_, int n_revalidators_)
800 int threads = MAX(count_cpu_cores(), 2);
802 n_revalidators = MAX(n_revalidators_, 0);
803 n_handlers = MAX(n_handlers_, 0);
805 if (!n_revalidators) {
806 n_revalidators = n_handlers
807 ? MAX(threads - (int) n_handlers, 1)
812 n_handlers = MAX(threads - (int) n_revalidators, 1);
817 ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
820 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
824 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
826 return connmgr_set_snoops(ofproto->connmgr, snoops);
830 ofproto_set_netflow(struct ofproto *ofproto,
831 const struct netflow_options *nf_options)
833 if (nf_options && sset_is_empty(&nf_options->collectors)) {
837 if (ofproto->ofproto_class->set_netflow) {
838 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
840 return nf_options ? EOPNOTSUPP : 0;
845 ofproto_set_sflow(struct ofproto *ofproto,
846 const struct ofproto_sflow_options *oso)
848 if (oso && sset_is_empty(&oso->targets)) {
852 if (ofproto->ofproto_class->set_sflow) {
853 return ofproto->ofproto_class->set_sflow(ofproto, oso);
855 return oso ? EOPNOTSUPP : 0;
860 ofproto_set_ipfix(struct ofproto *ofproto,
861 const struct ofproto_ipfix_bridge_exporter_options *bo,
862 const struct ofproto_ipfix_flow_exporter_options *fo,
865 if (ofproto->ofproto_class->set_ipfix) {
866 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
868 return (bo || fo) ? EOPNOTSUPP : 0;
873 ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
875 flow_restore_wait = flow_restore_wait_db;
879 ofproto_get_flow_restore_wait(void)
881 return flow_restore_wait;
885 /* Spanning Tree Protocol (STP) configuration. */
887 /* Configures STP on 'ofproto' using the settings defined in 's'. If
888 * 's' is NULL, disables STP.
890 * Returns 0 if successful, otherwise a positive errno value. */
892 ofproto_set_stp(struct ofproto *ofproto,
893 const struct ofproto_stp_settings *s)
895 return (ofproto->ofproto_class->set_stp
896 ? ofproto->ofproto_class->set_stp(ofproto, s)
900 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
901 * 'enabled' member of 's' is false, then the other members are not
904 * Returns 0 if successful, otherwise a positive errno value. */
906 ofproto_get_stp_status(struct ofproto *ofproto,
907 struct ofproto_stp_status *s)
909 return (ofproto->ofproto_class->get_stp_status
910 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
914 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
915 * in 's'. The caller is responsible for assigning STP port numbers
916 * (using the 'port_num' member in the range of 1 through 255, inclusive)
917 * and ensuring there are no duplicates. If the 's' is NULL, then STP
918 * is disabled on the port.
920 * Returns 0 if successful, otherwise a positive errno value.*/
922 ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
923 const struct ofproto_port_stp_settings *s)
925 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
927 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
928 ofproto->name, ofp_port);
932 return (ofproto->ofproto_class->set_stp_port
933 ? ofproto->ofproto_class->set_stp_port(ofport, s)
937 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
938 * 's'. If the 'enabled' member in 's' is false, then the other members
939 * are not meaningful.
941 * Returns 0 if successful, otherwise a positive errno value.*/
943 ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
944 struct ofproto_port_stp_status *s)
946 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
948 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
949 "port %"PRIu16, ofproto->name, ofp_port);
953 return (ofproto->ofproto_class->get_stp_port_status
954 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
958 /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
959 * 's'. If the 'enabled' member in 's' is false, then the other members
960 * are not meaningful.
962 * Returns 0 if successful, otherwise a positive errno value.*/
964 ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
965 struct ofproto_port_stp_stats *s)
967 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
969 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
970 "port %"PRIu16, ofproto->name, ofp_port);
974 return (ofproto->ofproto_class->get_stp_port_stats
975 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
979 /* Rapid Spanning Tree Protocol (RSTP) configuration. */
981 /* Configures RSTP on 'ofproto' using the settings defined in 's'. If
982 * 's' is NULL, disables RSTP.
984 * Returns 0 if successful, otherwise a positive errno value. */
986 ofproto_set_rstp(struct ofproto *ofproto,
987 const struct ofproto_rstp_settings *s)
989 if (!ofproto->ofproto_class->set_rstp) {
992 ofproto->ofproto_class->set_rstp(ofproto, s);
996 /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the
997 * 'enabled' member of 's' is false, then the other members are not
1000 * Returns 0 if successful, otherwise a positive errno value. */
1002 ofproto_get_rstp_status(struct ofproto *ofproto,
1003 struct ofproto_rstp_status *s)
1005 if (!ofproto->ofproto_class->get_rstp_status) {
1008 ofproto->ofproto_class->get_rstp_status(ofproto, s);
1012 /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
1013 * in 's'. The caller is responsible for assigning RSTP port numbers
1014 * (using the 'port_num' member in the range of 1 through 255, inclusive)
1015 * and ensuring there are no duplicates. If the 's' is NULL, then RSTP
1016 * is disabled on the port.
1018 * Returns 0 if successful, otherwise a positive errno value.*/
1020 ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
1021 const struct ofproto_port_rstp_settings *s)
1023 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1025 VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
1026 ofproto->name, ofp_port);
1030 if (!ofproto->ofproto_class->set_rstp_port) {
1033 ofproto->ofproto_class->set_rstp_port(ofport, s);
1037 /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
1038 * 's'. If the 'enabled' member in 's' is false, then the other members
1039 * are not meaningful.
1041 * Returns 0 if successful, otherwise a positive errno value.*/
1043 ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1044 struct ofproto_port_rstp_status *s)
1046 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1048 VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
1049 "port %"PRIu16, ofproto->name, ofp_port);
1053 if (!ofproto->ofproto_class->get_rstp_port_status) {
1056 ofproto->ofproto_class->get_rstp_port_status(ofport, s);
1060 /* Queue DSCP configuration. */
1062 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
1063 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
1064 * to implement QoS. Instead, it is used to implement features which require
1065 * knowledge of what queues exist on a port, and some basic information about
1068 * Returns 0 if successful, otherwise a positive errno value. */
1070 ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
1071 const struct ofproto_port_queue *queues,
1074 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1077 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
1078 ofproto->name, ofp_port);
1082 return (ofproto->ofproto_class->set_queues
1083 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
1087 /* LLDP configuration. */
1089 ofproto_port_set_lldp(struct ofproto *ofproto,
1090 ofp_port_t ofp_port,
1091 const struct smap *cfg)
1093 struct ofport *ofport;
1096 ofport = ofproto_get_port(ofproto, ofp_port);
1098 VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16,
1099 ofproto->name, ofp_port);
1102 error = (ofproto->ofproto_class->set_lldp
1103 ? ofproto->ofproto_class->set_lldp(ofport, cfg)
1106 VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)",
1107 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1108 ovs_strerror(error));
1113 ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED,
1114 const struct aa_settings *s)
1116 if (!ofproto->ofproto_class->set_aa) {
1119 ofproto->ofproto_class->set_aa(ofproto, s);
1124 ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux,
1125 const struct aa_mapping_settings *s)
1127 if (!ofproto->ofproto_class->aa_mapping_set) {
1130 ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s);
1135 ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux)
1137 if (!ofproto->ofproto_class->aa_mapping_unset) {
1140 ofproto->ofproto_class->aa_mapping_unset(ofproto, aux);
1145 ofproto_aa_vlan_get_queued(struct ofproto *ofproto,
1146 struct ovs_list *list)
1148 if (!ofproto->ofproto_class->aa_vlan_get_queued) {
1151 ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list);
1156 ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto)
1158 if (!ofproto->ofproto_class->aa_vlan_get_queue_size) {
1161 return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto);
1164 /* Connectivity Fault Management configuration. */
1166 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
1168 ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
1170 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1171 if (ofport && ofproto->ofproto_class->set_cfm) {
1172 ofproto->ofproto_class->set_cfm(ofport, NULL);
1176 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
1177 * basic configuration from the configuration members in 'cfm', and the remote
1178 * maintenance point ID from remote_mpid. Ignores the statistics members of
1181 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
1183 ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
1184 const struct cfm_settings *s)
1186 struct ofport *ofport;
1189 ofport = ofproto_get_port(ofproto, ofp_port);
1191 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
1192 ofproto->name, ofp_port);
1196 /* XXX: For configuration simplicity, we only support one remote_mpid
1197 * outside of the CFM module. It's not clear if this is the correct long
1198 * term solution or not. */
1199 error = (ofproto->ofproto_class->set_cfm
1200 ? ofproto->ofproto_class->set_cfm(ofport, s)
1203 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
1204 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1205 ovs_strerror(error));
1209 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
1210 * 'ofproto' does not have a port 'ofp_port'. */
1212 ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
1213 const struct smap *cfg)
1215 struct ofport *ofport;
1218 ofport = ofproto_get_port(ofproto, ofp_port);
1220 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1221 ofproto->name, ofp_port);
1225 error = (ofproto->ofproto_class->set_bfd
1226 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1229 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1230 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1231 ovs_strerror(error));
1235 /* Checks the status change of BFD on 'ofport'.
1237 * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */
1239 ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
1241 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1242 return (ofport && ofproto->ofproto_class->bfd_status_changed
1243 ? ofproto->ofproto_class->bfd_status_changed(ofport)
1247 /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
1248 * success. Returns a positive errno otherwise. Has no effect if 'ofp_port'
1249 * is not an OpenFlow port in 'ofproto'.
1251 * The caller must provide and own '*status'. */
1253 ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1254 struct smap *status)
1256 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1257 return (ofport && ofproto->ofproto_class->get_bfd_status
1258 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1262 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1263 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1264 * 0 if LACP partner information is not current (generally indicating a
1265 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1267 ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
1269 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1270 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1271 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
1276 ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats)
1278 struct ofproto *ofproto = port->ofproto;
1281 if (ofproto->ofproto_class->port_get_lacp_stats) {
1282 error = ofproto->ofproto_class->port_get_lacp_stats(port, stats);
1292 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1293 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1294 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1295 * configuration plus, if there is more than one slave, a bonding
1298 * If 'aux' is already registered then this function updates its configuration
1299 * to 's'. Otherwise, this function registers a new bundle.
1301 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1304 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1305 const struct ofproto_bundle_settings *s)
1307 return (ofproto->ofproto_class->bundle_set
1308 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1312 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1313 * If no such bundle has been registered, this has no effect. */
1315 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
1317 return ofproto_bundle_register(ofproto, aux, NULL);
1321 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1322 * If 'aux' is already registered then this function updates its configuration
1323 * to 's'. Otherwise, this function registers a new mirror. */
1325 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1326 const struct ofproto_mirror_settings *s)
1328 return (ofproto->ofproto_class->mirror_set
1329 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1333 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1334 * If no mirror has been registered, this has no effect. */
1336 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
1338 return ofproto_mirror_register(ofproto, aux, NULL);
1341 /* Retrieves statistics from mirror associated with client data pointer
1342 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1343 * 'bytes', respectively. If a particular counters is not supported,
1344 * the appropriate argument is set to UINT64_MAX.
1347 ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1348 uint64_t *packets, uint64_t *bytes)
1350 if (!ofproto->ofproto_class->mirror_get_stats) {
1351 *packets = *bytes = UINT64_MAX;
1355 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1359 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1360 * which all packets are flooded, instead of using MAC learning. If
1361 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1363 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1366 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
1368 return (ofproto->ofproto_class->set_flood_vlans
1369 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1373 /* Returns true if 'aux' is a registered bundle that is currently in use as the
1374 * output for a mirror. */
1376 ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
1378 return (ofproto->ofproto_class->is_mirror_output_bundle
1379 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1383 /* Configuration of OpenFlow tables. */
1385 /* Returns the number of OpenFlow tables in 'ofproto'. */
1387 ofproto_get_n_tables(const struct ofproto *ofproto)
1389 return ofproto->n_tables;
1392 /* Returns the number of Controller visible OpenFlow tables
1393 * in 'ofproto'. This number will exclude Hidden tables.
1394 * This funtion's return value should be less or equal to that of
1395 * ofproto_get_n_tables() . */
1397 ofproto_get_n_visible_tables(const struct ofproto *ofproto)
1399 uint8_t n = ofproto->n_tables;
1401 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1402 * if present, are always at the end.) */
1403 while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) {
1410 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1411 * settings from 's'. 'table_id' must be in the range 0 through the number of
1412 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1414 * For read-only tables, only the name may be configured. */
1416 ofproto_configure_table(struct ofproto *ofproto, int table_id,
1417 const struct ofproto_table_settings *s)
1419 struct oftable *table;
1421 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
1422 table = &ofproto->tables[table_id];
1424 oftable_set_name(table, s->name);
1426 if (table->flags & OFTABLE_READONLY) {
1430 if (classifier_set_prefix_fields(&table->cls,
1431 s->prefix_fields, s->n_prefix_fields)) {
1432 /* XXX: Trigger revalidation. */
1435 ovs_mutex_lock(&ofproto_mutex);
1436 unsigned int new_eviction = (s->enable_eviction
1437 ? table->eviction | EVICTION_CLIENT
1438 : table->eviction & ~EVICTION_CLIENT);
1439 oftable_configure_eviction(table, new_eviction, s->groups, s->n_groups);
1440 table->max_flows = s->max_flows;
1441 evict_rules_from_table(table);
1442 ovs_mutex_unlock(&ofproto_mutex);
1446 ofproto_has_snoops(const struct ofproto *ofproto)
1448 return connmgr_has_snoops(ofproto->connmgr);
1452 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
1454 connmgr_get_snoops(ofproto->connmgr, snoops);
1457 /* Deletes 'rule' from 'ofproto'.
1459 * Within an ofproto implementation, this function allows an ofproto
1460 * implementation to destroy any rules that remain when its ->destruct()
1461 * function is called. This function is not suitable for use elsewhere in an
1462 * ofproto implementation.
1464 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
1465 * Cycle" in ofproto-provider.h. */
1467 ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
1468 OVS_EXCLUDED(ofproto_mutex)
1470 /* This skips the ofmonitor and flow-removed notifications because the
1471 * switch is being deleted and any OpenFlow channels have been or soon will
1473 ovs_mutex_lock(&ofproto_mutex);
1475 if (!rule->removed) {
1476 /* Make sure there is no postponed removal of the rule. */
1477 ovs_assert(cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION));
1479 if (!classifier_remove(&rule->ofproto->tables[rule->table_id].cls,
1483 ofproto_rule_remove__(rule->ofproto, rule);
1484 ofproto->ofproto_class->rule_delete(rule);
1485 ofproto_rule_unref(rule);
1487 ovs_mutex_unlock(&ofproto_mutex);
1491 ofproto_flush__(struct ofproto *ofproto)
1492 OVS_EXCLUDED(ofproto_mutex)
1494 struct oftable *table;
1496 /* This will flush all datapath flows. */
1497 if (ofproto->ofproto_class->flush) {
1498 ofproto->ofproto_class->flush(ofproto);
1501 /* XXX: There is a small race window here, where new datapath flows can be
1502 * created by upcall handlers based on the existing flow table. We can not
1503 * call ofproto class flush while holding 'ofproto_mutex' to prevent this,
1504 * as then we could deadlock on syncing with the handler threads waiting on
1505 * the same mutex. */
1507 ovs_mutex_lock(&ofproto_mutex);
1508 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1509 struct rule_collection rules;
1512 if (table->flags & OFTABLE_HIDDEN) {
1516 rule_collection_init(&rules);
1518 CLS_FOR_EACH (rule, cr, &table->cls) {
1519 rule_collection_add(&rules, rule);
1521 delete_flows__(&rules, OFPRR_DELETE, NULL);
1523 /* XXX: Concurrent handler threads may insert new learned flows based on
1524 * learn actions of the now deleted flows right after we release
1525 * 'ofproto_mutex'. */
1526 ovs_mutex_unlock(&ofproto_mutex);
1529 static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1532 ofproto_destroy__(struct ofproto *ofproto)
1533 OVS_EXCLUDED(ofproto_mutex)
1535 struct oftable *table;
1537 destroy_rule_executes(ofproto);
1539 guarded_list_destroy(&ofproto->rule_executes);
1540 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1541 hmap_destroy(&ofproto->groups);
1543 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1544 free(ofproto->name);
1545 free(ofproto->type);
1546 free(ofproto->mfr_desc);
1547 free(ofproto->hw_desc);
1548 free(ofproto->sw_desc);
1549 free(ofproto->serial_desc);
1550 free(ofproto->dp_desc);
1551 hmap_destroy(&ofproto->ports);
1552 hmap_destroy(&ofproto->ofport_usage);
1553 shash_destroy(&ofproto->port_by_name);
1554 simap_destroy(&ofproto->ofp_requests);
1556 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1557 oftable_destroy(table);
1559 free(ofproto->tables);
1561 ovs_assert(hindex_is_empty(&ofproto->cookies));
1562 hindex_destroy(&ofproto->cookies);
1564 ovs_assert(hmap_is_empty(&ofproto->learned_cookies));
1565 hmap_destroy(&ofproto->learned_cookies);
1567 free(ofproto->vlan_bitmap);
1569 ofproto->ofproto_class->dealloc(ofproto);
1572 /* Destroying rules is doubly deferred, must have 'ofproto' around for them.
1573 * - 1st we defer the removal of the rules from the classifier
1574 * - 2nd we defer the actual destruction of the rules. */
1576 ofproto_destroy_defer__(struct ofproto *ofproto)
1577 OVS_EXCLUDED(ofproto_mutex)
1579 ovsrcu_postpone(ofproto_destroy__, ofproto);
1583 ofproto_destroy(struct ofproto *p)
1584 OVS_EXCLUDED(ofproto_mutex)
1586 struct ofport *ofport, *next_ofport;
1587 struct ofport_usage *usage, *next_usage;
1594 meter_delete(p, 1, p->meter_features.max_meters);
1595 p->meter_features.max_meters = 0;
1601 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
1602 ofport_destroy(ofport);
1605 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1606 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1610 p->ofproto_class->destruct(p);
1612 /* We should not postpone this because it involves deleting a listening
1613 * socket which we may want to reopen soon. 'connmgr' should not be used
1614 * by other threads */
1615 connmgr_destroy(p->connmgr);
1617 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1618 ovsrcu_postpone(ofproto_destroy_defer__, p);
1621 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1622 * kernel datapath, for example, this destroys the datapath in the kernel, and
1623 * with the netdev-based datapath, it tears down the data structures that
1624 * represent the datapath.
1626 * The datapath should not be currently open as an ofproto. */
1628 ofproto_delete(const char *name, const char *type)
1630 const struct ofproto_class *class = ofproto_class_find__(type);
1631 return (!class ? EAFNOSUPPORT
1632 : !class->del ? EACCES
1633 : class->del(type, name));
1637 process_port_change(struct ofproto *ofproto, int error, char *devname)
1639 if (error == ENOBUFS) {
1640 reinit_ports(ofproto);
1641 } else if (!error) {
1642 update_port(ofproto, devname);
1648 ofproto_type_run(const char *datapath_type)
1650 const struct ofproto_class *class;
1653 datapath_type = ofproto_normalize_type(datapath_type);
1654 class = ofproto_class_find__(datapath_type);
1656 error = class->type_run ? class->type_run(datapath_type) : 0;
1657 if (error && error != EAGAIN) {
1658 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
1659 datapath_type, ovs_strerror(error));
1665 ofproto_type_wait(const char *datapath_type)
1667 const struct ofproto_class *class;
1669 datapath_type = ofproto_normalize_type(datapath_type);
1670 class = ofproto_class_find__(datapath_type);
1672 if (class->type_wait) {
1673 class->type_wait(datapath_type);
1678 ofproto_run(struct ofproto *p)
1683 error = p->ofproto_class->run(p);
1684 if (error && error != EAGAIN) {
1685 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
1688 run_rule_executes(p);
1690 /* Restore the eviction group heap invariant occasionally. */
1691 if (p->eviction_group_timer < time_msec()) {
1694 p->eviction_group_timer = time_msec() + 1000;
1696 for (i = 0; i < p->n_tables; i++) {
1697 struct oftable *table = &p->tables[i];
1698 struct eviction_group *evg;
1701 if (!table->eviction) {
1705 if (table->n_flows > 100000) {
1706 static struct vlog_rate_limit count_rl =
1707 VLOG_RATE_LIMIT_INIT(1, 1);
1708 VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
1709 " number of rules: %d", i, table->n_flows);
1712 ovs_mutex_lock(&ofproto_mutex);
1713 CLS_FOR_EACH (rule, cr, &table->cls) {
1714 if (rule->idle_timeout || rule->hard_timeout) {
1715 if (!rule->eviction_group) {
1716 eviction_group_add_rule(rule);
1718 heap_raw_change(&rule->evg_node,
1719 rule_eviction_priority(p, rule));
1724 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1725 heap_rebuild(&evg->rules);
1727 ovs_mutex_unlock(&ofproto_mutex);
1731 if (p->ofproto_class->port_poll) {
1734 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1735 process_port_change(p, error, devname);
1739 new_seq = seq_read(connectivity_seq_get());
1740 if (new_seq != p->change_seq) {
1741 struct sset devnames;
1742 const char *devname;
1743 struct ofport *ofport;
1745 /* Update OpenFlow port status for any port whose netdev has changed.
1747 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1748 * destroyed, so it's not safe to update ports directly from the
1749 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1750 * need this two-phase approach. */
1751 sset_init(&devnames);
1752 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1753 uint64_t port_change_seq;
1755 port_change_seq = netdev_get_change_seq(ofport->netdev);
1756 if (ofport->change_seq != port_change_seq) {
1757 ofport->change_seq = port_change_seq;
1758 sset_add(&devnames, netdev_get_name(ofport->netdev));
1761 SSET_FOR_EACH (devname, &devnames) {
1762 update_port(p, devname);
1764 sset_destroy(&devnames);
1766 p->change_seq = new_seq;
1769 connmgr_run(p->connmgr, handle_openflow);
1775 ofproto_wait(struct ofproto *p)
1777 p->ofproto_class->wait(p);
1778 if (p->ofproto_class->port_poll_wait) {
1779 p->ofproto_class->port_poll_wait(p);
1781 seq_wait(connectivity_seq_get(), p->change_seq);
1782 connmgr_wait(p->connmgr);
1786 ofproto_is_alive(const struct ofproto *p)
1788 return connmgr_has_controllers(p->connmgr);
1791 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1792 * memory_report(). */
1794 ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1796 const struct oftable *table;
1797 unsigned int n_rules;
1799 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
1802 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1803 n_rules += table->n_flows;
1805 simap_increase(usage, "rules", n_rules);
1807 if (ofproto->ofproto_class->get_memory_usage) {
1808 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1811 connmgr_get_memory_usage(ofproto->connmgr, usage);
1815 ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1817 const struct ofproto_class *class;
1819 datapath_type = ofproto_normalize_type(datapath_type);
1820 class = ofproto_class_find__(datapath_type);
1822 if (class && class->type_get_memory_usage) {
1823 class->type_get_memory_usage(datapath_type, usage);
1828 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
1831 connmgr_get_controller_info(ofproto->connmgr, info);
1835 ofproto_free_ofproto_controller_info(struct shash *info)
1837 connmgr_free_controller_info(info);
1840 /* Makes a deep copy of 'old' into 'port'. */
1842 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1844 port->name = xstrdup(old->name);
1845 port->type = xstrdup(old->type);
1846 port->ofp_port = old->ofp_port;
1849 /* Frees memory allocated to members of 'ofproto_port'.
1851 * Do not call this function on an ofproto_port obtained from
1852 * ofproto_port_dump_next(): that function retains ownership of the data in the
1855 ofproto_port_destroy(struct ofproto_port *ofproto_port)
1857 free(ofproto_port->name);
1858 free(ofproto_port->type);
1861 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1863 * This function provides no status indication. An error status for the entire
1864 * dump operation is provided when it is completed by calling
1865 * ofproto_port_dump_done().
1868 ofproto_port_dump_start(struct ofproto_port_dump *dump,
1869 const struct ofproto *ofproto)
1871 dump->ofproto = ofproto;
1872 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1876 /* Attempts to retrieve another port from 'dump', which must have been created
1877 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1878 * 'port' and returns true. On failure, returns false.
1880 * Failure might indicate an actual error or merely that the last port has been
1881 * dumped. An error status for the entire dump operation is provided when it
1882 * is completed by calling ofproto_port_dump_done().
1884 * The ofproto owns the data stored in 'port'. It will remain valid until at
1885 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1886 * ofproto_port_dump_done(). */
1888 ofproto_port_dump_next(struct ofproto_port_dump *dump,
1889 struct ofproto_port *port)
1891 const struct ofproto *ofproto = dump->ofproto;
1897 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1900 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1906 /* Completes port table dump operation 'dump', which must have been created
1907 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1908 * error-free, otherwise a positive errno value describing the problem. */
1910 ofproto_port_dump_done(struct ofproto_port_dump *dump)
1912 const struct ofproto *ofproto = dump->ofproto;
1914 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1917 return dump->error == EOF ? 0 : dump->error;
1920 /* Returns the type to pass to netdev_open() when a datapath of type
1921 * 'datapath_type' has a port of type 'port_type', for a few special
1922 * cases when a netdev type differs from a port type. For example, when
1923 * using the userspace datapath, a port of type "internal" needs to be
1926 * Returns either 'type' itself or a string literal, which must not be
1929 ofproto_port_open_type(const char *datapath_type, const char *port_type)
1931 const struct ofproto_class *class;
1933 datapath_type = ofproto_normalize_type(datapath_type);
1934 class = ofproto_class_find__(datapath_type);
1939 return (class->port_open_type
1940 ? class->port_open_type(datapath_type, port_type)
1944 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1945 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1946 * the port's OpenFlow port number.
1948 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1949 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1950 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1951 * 'ofp_portp' is non-null). */
1953 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
1954 ofp_port_t *ofp_portp)
1956 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
1959 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1961 const char *netdev_name = netdev_get_name(netdev);
1963 simap_put(&ofproto->ofp_requests, netdev_name,
1964 ofp_to_u16(ofp_port));
1965 error = update_port(ofproto, netdev_name);
1968 *ofp_portp = OFPP_NONE;
1970 struct ofproto_port ofproto_port;
1972 error = ofproto_port_query_by_name(ofproto,
1973 netdev_get_name(netdev),
1976 *ofp_portp = ofproto_port.ofp_port;
1977 ofproto_port_destroy(&ofproto_port);
1984 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1985 * initializes '*port' appropriately; on failure, returns a positive errno
1988 * The caller owns the data in 'ofproto_port' and must free it with
1989 * ofproto_port_destroy() when it is no longer needed. */
1991 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1992 struct ofproto_port *port)
1996 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1998 memset(port, 0, sizeof *port);
2003 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
2004 * Returns 0 if successful, otherwise a positive errno. */
2006 ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
2008 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
2009 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
2010 struct simap_node *ofp_request_node;
2013 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
2014 if (ofp_request_node) {
2015 simap_delete(&ofproto->ofp_requests, ofp_request_node);
2018 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
2019 if (!error && ofport) {
2020 /* 'name' is the netdev's name and update_port() is going to close the
2021 * netdev. Just in case update_port() refers to 'name' after it
2022 * destroys 'ofport', make a copy of it around the update_port()
2024 char *devname = xstrdup(name);
2025 update_port(ofproto, devname);
2032 flow_mod_init(struct ofputil_flow_mod *fm,
2033 const struct match *match, int priority,
2034 const struct ofpact *ofpacts, size_t ofpacts_len,
2035 enum ofp_flow_mod_command command)
2037 *fm = (struct ofputil_flow_mod) {
2039 .priority = priority,
2042 .buffer_id = UINT32_MAX,
2043 .out_port = OFPP_ANY,
2044 .out_group = OFPG_ANY,
2045 .ofpacts = CONST_CAST(struct ofpact *, ofpacts),
2046 .ofpacts_len = ofpacts_len,
2047 .delete_reason = OFPRR_DELETE,
2052 simple_flow_mod(struct ofproto *ofproto,
2053 const struct match *match, int priority,
2054 const struct ofpact *ofpacts, size_t ofpacts_len,
2055 enum ofp_flow_mod_command command)
2057 struct ofproto_flow_mod ofm;
2059 flow_mod_init(&ofm.fm, match, priority, ofpacts, ofpacts_len, command);
2061 return handle_flow_mod__(ofproto, &ofm, NULL);
2064 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
2065 * performs the 'n_actions' actions in 'actions'. The new flow will not
2068 * If cls_rule->priority is in the range of priorities supported by OpenFlow
2069 * (0...65535, inclusive) then the flow will be visible to OpenFlow
2070 * controllers; otherwise, it will be hidden.
2072 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
2074 * This is a helper function for in-band control and fail-open. */
2076 ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
2078 const struct ofpact *ofpacts, size_t ofpacts_len)
2079 OVS_EXCLUDED(ofproto_mutex)
2081 const struct rule *rule;
2084 /* First do a cheap check whether the rule we're looking for already exists
2085 * with the actions that we want. If it does, then we're done. */
2086 rule = rule_from_cls_rule(classifier_find_match_exactly(
2087 &ofproto->tables[0].cls, match, priority,
2090 const struct rule_actions *actions = rule_get_actions(rule);
2091 must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len,
2092 ofpacts, ofpacts_len);
2097 /* If there's no such rule or the rule doesn't have the actions we want,
2098 * fall back to a executing a full flow mod. We can't optimize this at
2099 * all because we didn't take enough locks above to ensure that the flow
2100 * table didn't already change beneath us. */
2102 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
2103 OFPFC_MODIFY_STRICT);
2107 /* Executes the flow modification specified in 'fm'. Returns 0 on success, or
2108 * an OFPERR_* OpenFlow error code on failure.
2110 * This is a helper function for in-band control and fail-open and the "learn"
2113 ofproto_flow_mod(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
2114 OVS_EXCLUDED(ofproto_mutex)
2116 struct ofputil_flow_mod *fm = &ofm->fm;
2118 /* Optimize for the most common case of a repeated learn action.
2119 * If an identical flow already exists we only need to update its
2120 * 'modified' time. */
2121 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
2122 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
2123 struct oftable *table = &ofproto->tables[fm->table_id];
2127 rule = rule_from_cls_rule(classifier_find_match_exactly(
2128 &table->cls, &fm->match, fm->priority,
2131 /* Reading many of the rule fields and writing on 'modified'
2132 * requires the rule->mutex. Also, rule->actions may change
2133 * if rule->mutex is not held. */
2134 const struct rule_actions *actions;
2136 ovs_mutex_lock(&rule->mutex);
2137 actions = rule_get_actions(rule);
2138 if (rule->idle_timeout == fm->idle_timeout
2139 && rule->hard_timeout == fm->hard_timeout
2140 && rule->importance == fm->importance
2141 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
2142 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
2143 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
2144 actions->ofpacts, actions->ofpacts_len)) {
2145 /* Rule already exists and need not change, only update the
2146 modified timestamp. */
2147 rule->modified = time_msec();
2150 ovs_mutex_unlock(&rule->mutex);
2158 return handle_flow_mod__(ofproto, ofm, NULL);
2161 /* Searches for a rule with matching criteria exactly equal to 'target' in
2162 * ofproto's table 0 and, if it finds one, deletes it.
2164 * This is a helper function for in-band control and fail-open. */
2166 ofproto_delete_flow(struct ofproto *ofproto,
2167 const struct match *target, int priority)
2168 OVS_EXCLUDED(ofproto_mutex)
2170 struct classifier *cls = &ofproto->tables[0].cls;
2173 /* First do a cheap check whether the rule we're looking for has already
2174 * been deleted. If so, then we're done. */
2175 rule = rule_from_cls_rule(classifier_find_match_exactly(
2176 cls, target, priority, CLS_MAX_VERSION));
2181 /* Execute a flow mod. We can't optimize this at all because we didn't
2182 * take enough locks above to ensure that the flow table didn't already
2183 * change beneath us. */
2184 simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT);
2187 /* Delete all of the flows from all of ofproto's flow tables, then reintroduce
2188 * the flows required by in-band control and fail-open. */
2190 ofproto_flush_flows(struct ofproto *ofproto)
2192 COVERAGE_INC(ofproto_flush);
2193 ofproto_flush__(ofproto);
2194 connmgr_flushed(ofproto->connmgr);
2198 reinit_ports(struct ofproto *p)
2200 struct ofproto_port_dump dump;
2201 struct sset devnames;
2202 struct ofport *ofport;
2203 struct ofproto_port ofproto_port;
2204 const char *devname;
2206 COVERAGE_INC(ofproto_reinit_ports);
2208 sset_init(&devnames);
2209 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2210 sset_add(&devnames, netdev_get_name(ofport->netdev));
2212 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2213 sset_add(&devnames, ofproto_port.name);
2216 SSET_FOR_EACH (devname, &devnames) {
2217 update_port(p, devname);
2219 sset_destroy(&devnames);
2223 alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2227 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
2228 port_idx = port_idx ? port_idx : UINT16_MAX;
2230 if (port_idx >= ofproto->max_ports
2231 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2232 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2233 long long int last_used_at, lru = LLONG_MAX;
2235 /* Search for a free OpenFlow port number. We try not to
2236 * immediately reuse them to prevent problems due to old
2239 * We limit the automatically assigned port numbers to the lower half
2240 * of the port range, to reserve the upper half for assignment by
2243 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
2244 ofproto->alloc_port_no = 1;
2246 last_used_at = ofport_get_usage(ofproto,
2247 u16_to_ofp(ofproto->alloc_port_no));
2248 if (!last_used_at) {
2249 port_idx = ofproto->alloc_port_no;
2251 } else if ( last_used_at < time_msec() - 60*60*1000) {
2252 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2253 * more than an hour ago, consider it usable. */
2254 ofport_remove_usage(ofproto,
2255 u16_to_ofp(ofproto->alloc_port_no));
2256 port_idx = ofproto->alloc_port_no;
2258 } else if (last_used_at < lru) {
2260 lru_ofport = ofproto->alloc_port_no;
2263 if (ofproto->alloc_port_no == end_port_no) {
2265 port_idx = lru_ofport;
2272 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
2273 return u16_to_ofp(port_idx);
2277 dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
2279 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
2280 ofport_set_usage(ofproto, ofp_port, time_msec());
2284 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2285 * pointer if the netdev cannot be opened. On success, also fills in
2287 static struct netdev *
2288 ofport_open(struct ofproto *ofproto,
2289 struct ofproto_port *ofproto_port,
2290 struct ofputil_phy_port *pp)
2292 enum netdev_flags flags;
2293 struct netdev *netdev;
2296 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
2298 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
2299 "cannot be opened (%s)",
2301 ofproto_port->name, ofproto_port->ofp_port,
2302 ofproto_port->name, ovs_strerror(error));
2306 if (ofproto_port->ofp_port == OFPP_NONE) {
2307 if (!strcmp(ofproto->name, ofproto_port->name)) {
2308 ofproto_port->ofp_port = OFPP_LOCAL;
2310 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2311 ofproto_port->name);
2314 pp->port_no = ofproto_port->ofp_port;
2315 netdev_get_etheraddr(netdev, &pp->hw_addr);
2316 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
2317 netdev_get_flags(netdev, &flags);
2318 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2319 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2320 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2321 &pp->supported, &pp->peer);
2322 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2323 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
2328 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
2329 * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are
2332 ofport_equal(const struct ofputil_phy_port *a,
2333 const struct ofputil_phy_port *b)
2335 return (eth_addr_equals(a->hw_addr, b->hw_addr)
2336 && a->state == b->state
2337 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
2338 && a->curr == b->curr
2339 && a->advertised == b->advertised
2340 && a->supported == b->supported
2341 && a->peer == b->peer
2342 && a->curr_speed == b->curr_speed
2343 && a->max_speed == b->max_speed);
2346 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2347 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2348 * one with the same name or port number). */
2350 ofport_install(struct ofproto *p,
2351 struct netdev *netdev, const struct ofputil_phy_port *pp)
2353 const char *netdev_name = netdev_get_name(netdev);
2354 struct ofport *ofport;
2357 /* Create ofport. */
2358 ofport = p->ofproto_class->port_alloc();
2363 ofport->ofproto = p;
2364 ofport->netdev = netdev;
2365 ofport->change_seq = netdev_get_change_seq(netdev);
2367 ofport->ofp_port = pp->port_no;
2368 ofport->created = time_msec();
2370 /* Add port to 'p'. */
2371 hmap_insert(&p->ports, &ofport->hmap_node,
2372 hash_ofp_port(ofport->ofp_port));
2373 shash_add(&p->port_by_name, netdev_name, ofport);
2375 update_mtu(p, ofport);
2377 /* Let the ofproto_class initialize its private data. */
2378 error = p->ofproto_class->port_construct(ofport);
2382 connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD);
2386 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
2387 p->name, netdev_name, ovs_strerror(error));
2389 ofport_destroy__(ofport);
2391 netdev_close(netdev);
2396 /* Removes 'ofport' from 'p' and destroys it. */
2398 ofport_remove(struct ofport *ofport)
2400 connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp,
2402 ofport_destroy(ofport);
2405 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2408 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2410 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2412 ofport_remove(port);
2416 /* Updates 'port' with new 'pp' description.
2418 * Does not handle a name or port number change. The caller must implement
2419 * such a change as a delete followed by an add. */
2421 ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
2423 port->pp.hw_addr = pp->hw_addr;
2424 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2425 | (pp->config & OFPUTIL_PC_PORT_DOWN));
2426 port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN)
2427 | (pp->state & OFPUTIL_PS_LINK_DOWN));
2428 port->pp.curr = pp->curr;
2429 port->pp.advertised = pp->advertised;
2430 port->pp.supported = pp->supported;
2431 port->pp.peer = pp->peer;
2432 port->pp.curr_speed = pp->curr_speed;
2433 port->pp.max_speed = pp->max_speed;
2435 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2436 &port->pp, OFPPR_MODIFY);
2439 /* Update OpenFlow 'state' in 'port' and notify controller. */
2441 ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
2443 if (port->pp.state != state) {
2444 port->pp.state = state;
2445 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2446 &port->pp, OFPPR_MODIFY);
2451 ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
2453 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2455 if (port->ofproto->ofproto_class->set_realdev) {
2456 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2458 if (port->ofproto->ofproto_class->set_stp_port) {
2459 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2461 if (port->ofproto->ofproto_class->set_rstp_port) {
2462 port->ofproto->ofproto_class->set_rstp_port(port, NULL);
2464 if (port->ofproto->ofproto_class->set_cfm) {
2465 port->ofproto->ofproto_class->set_cfm(port, NULL);
2467 if (port->ofproto->ofproto_class->bundle_remove) {
2468 port->ofproto->ofproto_class->bundle_remove(port);
2474 ofport_destroy__(struct ofport *port)
2476 struct ofproto *ofproto = port->ofproto;
2477 const char *name = netdev_get_name(port->netdev);
2479 hmap_remove(&ofproto->ports, &port->hmap_node);
2480 shash_delete(&ofproto->port_by_name,
2481 shash_find(&ofproto->port_by_name, name));
2483 netdev_close(port->netdev);
2484 ofproto->ofproto_class->port_dealloc(port);
2488 ofport_destroy(struct ofport *port)
2491 dealloc_ofp_port(port->ofproto, port->ofp_port);
2492 port->ofproto->ofproto_class->port_destruct(port);
2493 ofport_destroy__(port);
2498 ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
2500 struct ofport *port;
2502 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
2504 if (port->ofp_port == ofp_port) {
2511 static long long int
2512 ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2514 struct ofport_usage *usage;
2516 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2517 &ofproto->ofport_usage) {
2518 if (usage->ofp_port == ofp_port) {
2519 return usage->last_used;
2526 ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2527 long long int last_used)
2529 struct ofport_usage *usage;
2530 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2531 &ofproto->ofport_usage) {
2532 if (usage->ofp_port == ofp_port) {
2533 usage->last_used = last_used;
2537 ovs_assert(last_used == LLONG_MAX);
2539 usage = xmalloc(sizeof *usage);
2540 usage->ofp_port = ofp_port;
2541 usage->last_used = last_used;
2542 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2543 hash_ofp_port(ofp_port));
2547 ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2549 struct ofport_usage *usage;
2550 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2551 &ofproto->ofport_usage) {
2552 if (usage->ofp_port == ofp_port) {
2553 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2561 ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2563 struct ofproto *ofproto = port->ofproto;
2566 if (ofproto->ofproto_class->port_get_stats) {
2567 error = ofproto->ofproto_class->port_get_stats(port, stats);
2576 update_port(struct ofproto *ofproto, const char *name)
2578 struct ofproto_port ofproto_port;
2579 struct ofputil_phy_port pp;
2580 struct netdev *netdev;
2581 struct ofport *port;
2584 COVERAGE_INC(ofproto_update_port);
2586 /* Fetch 'name''s location and properties from the datapath. */
2587 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
2588 ? ofport_open(ofproto, &ofproto_port, &pp)
2592 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
2593 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
2594 struct netdev *old_netdev = port->netdev;
2596 /* 'name' hasn't changed location. Any properties changed? */
2597 if (!ofport_equal(&port->pp, &pp)) {
2598 ofport_modified(port, &pp);
2601 update_mtu(ofproto, port);
2603 /* Install the newly opened netdev in case it has changed.
2604 * Don't close the old netdev yet in case port_modified has to
2605 * remove a retained reference to it.*/
2606 port->netdev = netdev;
2607 port->change_seq = netdev_get_change_seq(netdev);
2609 if (port->ofproto->ofproto_class->port_modified) {
2610 port->ofproto->ofproto_class->port_modified(port);
2613 netdev_close(old_netdev);
2615 /* If 'port' is nonnull then its name differs from 'name' and thus
2616 * we should delete it. If we think there's a port named 'name'
2617 * then its port number must be wrong now so delete it too. */
2619 ofport_remove(port);
2621 ofport_remove_with_name(ofproto, name);
2622 error = ofport_install(ofproto, netdev, &pp);
2625 /* Any port named 'name' is gone now. */
2626 ofport_remove_with_name(ofproto, name);
2628 ofproto_port_destroy(&ofproto_port);
2634 init_ports(struct ofproto *p)
2636 struct ofproto_port_dump dump;
2637 struct ofproto_port ofproto_port;
2638 struct shash_node *node, *next;
2640 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2641 const char *name = ofproto_port.name;
2643 if (shash_find(&p->port_by_name, name)) {
2644 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
2647 struct ofputil_phy_port pp;
2648 struct netdev *netdev;
2650 /* Check if an OpenFlow port number had been requested. */
2651 node = shash_find(&init_ofp_ports, name);
2653 const struct iface_hint *iface_hint = node->data;
2654 simap_put(&p->ofp_requests, name,
2655 ofp_to_u16(iface_hint->ofp_port));
2658 netdev = ofport_open(p, &ofproto_port, &pp);
2660 ofport_install(p, netdev, &pp);
2661 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
2662 p->alloc_port_no = MAX(p->alloc_port_no,
2663 ofp_to_u16(ofproto_port.ofp_port));
2669 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
2670 struct iface_hint *iface_hint = node->data;
2672 if (!strcmp(iface_hint->br_name, p->name)) {
2673 free(iface_hint->br_name);
2674 free(iface_hint->br_type);
2676 shash_delete(&init_ofp_ports, node);
2683 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2684 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2686 find_min_mtu(struct ofproto *p)
2688 struct ofport *ofport;
2691 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2692 struct netdev *netdev = ofport->netdev;
2695 /* Skip any internal ports, since that's what we're trying to
2697 if (!strcmp(netdev_get_type(netdev), "internal")) {
2701 if (netdev_get_mtu(netdev, &dev_mtu)) {
2704 if (!mtu || dev_mtu < mtu) {
2709 return mtu ? mtu: ETH_PAYLOAD_MAX;
2712 /* Update MTU of all datapath devices on 'p' to the minimum of the
2713 * non-datapath ports in event of 'port' added or changed. */
2715 update_mtu(struct ofproto *p, struct ofport *port)
2717 struct ofport *ofport;
2718 struct netdev *netdev = port->netdev;
2719 int dev_mtu, old_min;
2721 if (netdev_get_mtu(netdev, &dev_mtu)) {
2725 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2726 if (dev_mtu > p->min_mtu) {
2727 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2728 dev_mtu = p->min_mtu;
2731 port->mtu = dev_mtu;
2735 /* For non-internal port find new min mtu. */
2736 old_min = p->min_mtu;
2737 port->mtu = dev_mtu;
2738 p->min_mtu = find_min_mtu(p);
2739 if (p->min_mtu == old_min) {
2743 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2744 struct netdev *netdev = ofport->netdev;
2746 if (!strcmp(netdev_get_type(netdev), "internal")) {
2747 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2748 ofport->mtu = p->min_mtu;
2755 ofproto_rule_destroy__(struct rule *rule)
2756 OVS_NO_THREAD_SAFETY_ANALYSIS
2758 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2759 rule_actions_destroy(rule_get_actions(rule));
2760 ovs_mutex_destroy(&rule->mutex);
2761 rule->ofproto->ofproto_class->rule_dealloc(rule);
2765 rule_destroy_cb(struct rule *rule)
2766 OVS_NO_THREAD_SAFETY_ANALYSIS
2768 /* Send rule removed if needed. */
2769 if (rule->flags & OFPUTIL_FF_SEND_FLOW_REM
2770 && rule->removed_reason != OVS_OFPRR_NONE
2771 && !rule_is_hidden(rule)) {
2772 ofproto_rule_send_removed(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 remove_rule_rcu__(struct rule *rule)
2811 OVS_REQUIRES(ofproto_mutex)
2813 struct ofproto *ofproto = rule->ofproto;
2814 struct oftable *table = &ofproto->tables[rule->table_id];
2816 ovs_assert(!cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION));
2817 if (!classifier_remove(&table->cls, &rule->cr)) {
2820 ofproto->ofproto_class->rule_delete(rule);
2821 ofproto_rule_unref(rule);
2825 remove_rule_rcu(struct rule *rule)
2826 OVS_EXCLUDED(ofproto_mutex)
2828 ovs_mutex_lock(&ofproto_mutex);
2829 remove_rule_rcu__(rule);
2830 ovs_mutex_unlock(&ofproto_mutex);
2833 /* Removes and deletes rules from a NULL-terminated array of rule pointers. */
2835 remove_rules_rcu(struct rule **rules)
2836 OVS_EXCLUDED(ofproto_mutex)
2838 struct rule **orig_rules = rules;
2841 struct ofproto *ofproto = rules[0]->ofproto;
2842 unsigned long tables[BITMAP_N_LONGS(256)];
2846 memset(tables, 0, sizeof tables);
2848 ovs_mutex_lock(&ofproto_mutex);
2849 while ((rule = *rules++)) {
2850 /* Defer once for each new table. This defers the subtable cleanup
2851 * until later, so that when removing large number of flows the
2852 * operation is faster. */
2853 if (!bitmap_is_set(tables, rule->table_id)) {
2854 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
2856 bitmap_set1(tables, rule->table_id);
2857 classifier_defer(cls);
2859 remove_rule_rcu__(rule);
2862 BITMAP_FOR_EACH_1(table_id, 256, tables) {
2863 struct classifier *cls = &ofproto->tables[table_id].cls;
2865 classifier_publish(cls);
2867 ovs_mutex_unlock(&ofproto_mutex);
2874 ofproto_group_ref(struct ofgroup *group)
2877 ovs_refcount_ref(&group->ref_count);
2882 ofproto_group_unref(struct ofgroup *group)
2884 if (group && ovs_refcount_unref(&group->ref_count) == 1) {
2885 group->ofproto->ofproto_class->group_destruct(group);
2886 ofputil_bucket_list_destroy(&group->buckets);
2887 group->ofproto->ofproto_class->group_dealloc(group);
2891 static uint32_t get_provider_meter_id(const struct ofproto *,
2892 uint32_t of_meter_id);
2894 /* Creates and returns a new 'struct rule_actions', whose actions are a copy
2895 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2896 const struct rule_actions *
2897 rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len)
2899 struct rule_actions *actions;
2901 actions = xmalloc(sizeof *actions + ofpacts_len);
2902 actions->ofpacts_len = ofpacts_len;
2903 actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0;
2904 memcpy(actions->ofpacts, ofpacts, ofpacts_len);
2906 actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL)
2912 /* Free the actions after the RCU quiescent period is reached. */
2914 rule_actions_destroy(const struct rule_actions *actions)
2917 ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions));
2921 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2922 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2924 ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
2925 OVS_REQUIRES(ofproto_mutex)
2927 if (port == OFPP_ANY) {
2930 const struct rule_actions *actions = rule_get_actions(rule);
2931 return ofpacts_output_to_port(actions->ofpacts,
2932 actions->ofpacts_len, port);
2936 /* Returns true if 'rule' has group and equals group_id. */
2938 ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
2939 OVS_REQUIRES(ofproto_mutex)
2941 if (group_id == OFPG_ANY) {
2944 const struct rule_actions *actions = rule_get_actions(rule);
2945 return ofpacts_output_to_group(actions->ofpacts,
2946 actions->ofpacts_len, group_id);
2951 rule_execute_destroy(struct rule_execute *e)
2953 ofproto_rule_unref(e->rule);
2954 list_remove(&e->list_node);
2958 /* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2959 * by passing them to the ofproto provider. */
2961 run_rule_executes(struct ofproto *ofproto)
2962 OVS_EXCLUDED(ofproto_mutex)
2964 struct rule_execute *e, *next;
2965 struct ovs_list executes;
2967 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2968 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2971 flow_extract(e->packet, &flow);
2972 flow.in_port.ofp_port = e->in_port;
2973 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2975 rule_execute_destroy(e);
2979 /* Destroys and discards all "rule_execute" operations queued up in
2980 * ofproto->rule_executes. */
2982 destroy_rule_executes(struct ofproto *ofproto)
2984 struct rule_execute *e, *next;
2985 struct ovs_list executes;
2987 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2988 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
2989 dp_packet_delete(e->packet);
2990 rule_execute_destroy(e);
2995 rule_is_readonly(const struct rule *rule)
2997 const struct oftable *table = &rule->ofproto->tables[rule->table_id];
2998 return (table->flags & OFTABLE_READONLY) != 0;
3002 hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id)
3004 uint64_t cookie = (OVS_FORCE uint64_t) cookie_;
3005 return hash_3words(cookie, cookie >> 32, table_id);
3009 learned_cookies_update_one__(struct ofproto *ofproto,
3010 const struct ofpact_learn *learn,
3011 int delta, struct ovs_list *dead_cookies)
3012 OVS_REQUIRES(ofproto_mutex)
3014 uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id);
3015 struct learned_cookie *c;
3017 HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) {
3018 if (c->cookie == learn->cookie && c->table_id == learn->table_id) {
3020 ovs_assert(c->n >= 0);
3023 hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node);
3024 list_push_back(dead_cookies, &c->u.list_node);
3031 ovs_assert(delta > 0);
3032 c = xmalloc(sizeof *c);
3033 hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash);
3034 c->cookie = learn->cookie;
3035 c->table_id = learn->table_id;
3039 static const struct ofpact_learn *
3040 next_learn_with_delete(const struct rule_actions *actions,
3041 const struct ofpact_learn *start)
3043 const struct ofpact *pos;
3045 for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts;
3046 pos < ofpact_end(actions->ofpacts, actions->ofpacts_len);
3047 pos = ofpact_next(pos)) {
3048 if (pos->type == OFPACT_LEARN) {
3049 const struct ofpact_learn *learn = ofpact_get_LEARN(pos);
3050 if (learn->flags & NX_LEARN_F_DELETE_LEARNED) {
3060 learned_cookies_update__(struct ofproto *ofproto,
3061 const struct rule_actions *actions,
3062 int delta, struct ovs_list *dead_cookies)
3063 OVS_REQUIRES(ofproto_mutex)
3065 if (actions->has_learn_with_delete) {
3066 const struct ofpact_learn *learn;
3068 for (learn = next_learn_with_delete(actions, NULL); learn;
3069 learn = next_learn_with_delete(actions, learn)) {
3070 learned_cookies_update_one__(ofproto, learn, delta, dead_cookies);
3076 learned_cookies_inc(struct ofproto *ofproto,
3077 const struct rule_actions *actions)
3078 OVS_REQUIRES(ofproto_mutex)
3080 learned_cookies_update__(ofproto, actions, +1, NULL);
3084 learned_cookies_dec(struct ofproto *ofproto,
3085 const struct rule_actions *actions,
3086 struct ovs_list *dead_cookies)
3087 OVS_REQUIRES(ofproto_mutex)
3089 learned_cookies_update__(ofproto, actions, -1, dead_cookies);
3093 learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies)
3094 OVS_REQUIRES(ofproto_mutex)
3096 struct learned_cookie *c;
3098 LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) {
3099 struct rule_criteria criteria;
3100 struct rule_collection rules;
3103 match_init_catchall(&match);
3104 rule_criteria_init(&criteria, c->table_id, &match, 0, CLS_MAX_VERSION,
3105 c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY);
3106 rule_criteria_require_rw(&criteria, false);
3107 collect_rules_loose(ofproto, &criteria, &rules);
3108 rule_criteria_destroy(&criteria);
3109 delete_flows__(&rules, OFPRR_DELETE, NULL);
3116 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
3118 ofconn_send_reply(ofconn, make_echo_reply(oh));
3123 query_tables(struct ofproto *ofproto,
3124 struct ofputil_table_features **featuresp,
3125 struct ofputil_table_stats **statsp)
3127 struct mf_bitmap rw_fields = oxm_writable_fields();
3128 struct mf_bitmap match = oxm_matchable_fields();
3129 struct mf_bitmap mask = oxm_maskable_fields();
3131 struct ofputil_table_features *features;
3132 struct ofputil_table_stats *stats;
3135 features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
3136 for (i = 0; i < ofproto->n_tables; i++) {
3137 struct ofputil_table_features *f = &features[i];
3140 sprintf(f->name, "table%d", i);
3141 f->metadata_match = OVS_BE64_MAX;
3142 f->metadata_write = OVS_BE64_MAX;
3143 atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
3144 f->max_entries = 1000000;
3146 bool more_tables = false;
3147 for (int j = i + 1; j < ofproto->n_tables; j++) {
3148 if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) {
3149 bitmap_set1(f->nonmiss.next, j);
3153 f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
3155 f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
3157 f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
3158 f->nonmiss.write.set_fields = rw_fields;
3159 f->nonmiss.apply = f->nonmiss.write;
3160 f->miss = f->nonmiss;
3164 f->wildcard = match;
3168 stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
3169 for (i = 0; i < ofproto->n_tables; i++) {
3170 struct ofputil_table_stats *s = &stats[i];
3173 s->active_count = ofproto->tables[i].n_flows;
3175 s->active_count -= connmgr_count_hidden_rules(
3183 ofproto->ofproto_class->query_tables(ofproto, features, stats);
3185 for (i = 0; i < ofproto->n_tables; i++) {
3186 const struct oftable *table = &ofproto->tables[i];
3187 struct ofputil_table_features *f = &features[i];
3190 ovs_strzcpy(f->name, table->name, sizeof f->name);
3193 if (table->max_flows < f->max_entries) {
3194 f->max_entries = table->max_flows;
3200 query_switch_features(struct ofproto *ofproto,
3201 bool *arp_match_ip, uint64_t *ofpacts)
3203 struct ofputil_table_features *features, *f;
3205 *arp_match_ip = false;
3208 query_tables(ofproto, &features, NULL);
3209 for (f = features; f < &features[ofproto->n_tables]; f++) {
3210 *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
3211 if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
3212 bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
3213 *arp_match_ip = true;
3219 ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
3223 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
3225 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3226 struct ofputil_switch_features features;
3227 struct ofport *port;
3231 query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
3233 features.datapath_id = ofproto->datapath_id;
3234 features.n_buffers = pktbuf_capacity();
3235 features.n_tables = ofproto_get_n_visible_tables(ofproto);
3236 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
3237 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS |
3238 OFPUTIL_C_GROUP_STATS);
3240 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
3242 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
3243 features.auxiliary_id = 0;
3244 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
3246 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3247 ofputil_put_switch_features_port(&port->pp, b);
3250 ofconn_send_reply(ofconn, b);
3255 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
3257 struct ofputil_switch_config config;
3258 config.frag = ofconn_get_ofproto(ofconn)->frag_handling;
3259 config.invalid_ttl_to_controller
3260 = ofconn_get_invalid_ttl_to_controller(ofconn);
3261 config.miss_send_len = ofconn_get_miss_send_len(ofconn);
3263 ofconn_send_reply(ofconn, ofputil_encode_get_config_reply(oh, &config));
3269 handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
3271 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3272 struct ofputil_switch_config config;
3275 error = ofputil_decode_set_config(oh, &config);
3280 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
3281 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
3282 enum ofputil_frag_handling cur = ofproto->frag_handling;
3283 enum ofputil_frag_handling next = config.frag;
3286 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
3287 ofproto->frag_handling = next;
3289 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
3291 ofputil_frag_handling_to_string(next));
3296 if (config.invalid_ttl_to_controller >= 0) {
3297 ofconn_set_invalid_ttl_to_controller(ofconn,
3298 config.invalid_ttl_to_controller);
3301 ofconn_set_miss_send_len(ofconn, config.miss_send_len);
3306 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3307 * error message code for the caller to propagate upward. Otherwise, returns
3310 * The log message mentions 'msg_type'. */
3312 reject_slave_controller(struct ofconn *ofconn)
3314 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
3315 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
3316 return OFPERR_OFPBRC_IS_SLAVE;
3322 /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
3325 * - If they use a meter, then 'ofproto' has that meter configured.
3327 * - If they use any groups, then 'ofproto' has that group configured.
3329 * Returns 0 if successful, otherwise an OpenFlow error. */
3331 ofproto_check_ofpacts(struct ofproto *ofproto,
3332 const struct ofpact ofpacts[], size_t ofpacts_len)
3334 const struct ofpact *a;
3337 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
3338 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
3339 return OFPERR_OFPMMFC_INVALID_METER;
3342 OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) {
3343 if (a->type == OFPACT_GROUP
3344 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
3345 return OFPERR_OFPBAC_BAD_OUT_GROUP;
3353 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
3355 struct ofproto *p = ofconn_get_ofproto(ofconn);
3356 struct ofputil_packet_out po;
3357 struct dp_packet *payload;
3358 uint64_t ofpacts_stub[1024 / 8];
3359 struct ofpbuf ofpacts;
3363 COVERAGE_INC(ofproto_packet_out);
3365 error = reject_slave_controller(ofconn);
3370 /* Decode message. */
3371 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
3372 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
3374 goto exit_free_ofpacts;
3376 if (ofp_to_u16(po.in_port) >= p->max_ports
3377 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
3378 error = OFPERR_OFPBRC_BAD_PORT;
3379 goto exit_free_ofpacts;
3383 if (po.buffer_id != UINT32_MAX) {
3384 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
3386 goto exit_free_ofpacts;
3389 /* Ensure that the L3 header is 32-bit aligned. */
3390 payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2);
3393 /* Verify actions against packet, then send packet if successful. */
3394 flow_extract(payload, &flow);
3395 flow.in_port.ofp_port = po.in_port;
3397 /* Check actions like for flow mods. We pass a 'table_id' of 0 to
3398 * ofproto_check_consistency(), which isn't strictly correct because these
3399 * actions aren't in any table. This is OK as 'table_id' is only used to
3400 * check instructions (e.g., goto-table), which can't appear on the action
3401 * list of a packet-out. */
3402 error = ofpacts_check_consistency(po.ofpacts, po.ofpacts_len,
3403 &flow, u16_to_ofp(p->max_ports),
3405 ofconn_get_protocol(ofconn));
3407 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
3409 error = p->ofproto_class->packet_out(p, payload, &flow,
3410 po.ofpacts, po.ofpacts_len);
3413 dp_packet_delete(payload);
3416 ofpbuf_uninit(&ofpacts);
3422 update_port_config(struct ofconn *ofconn, struct ofport *port,
3423 enum ofputil_port_config config,
3424 enum ofputil_port_config mask)
3426 enum ofputil_port_config toggle = (config ^ port->pp.config) & mask;
3428 if (toggle & OFPUTIL_PC_PORT_DOWN
3429 && (config & OFPUTIL_PC_PORT_DOWN
3430 ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL)
3431 : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) {
3432 /* We tried to bring the port up or down, but it failed, so don't
3433 * update the "down" bit. */
3434 toggle &= ~OFPUTIL_PC_PORT_DOWN;
3438 enum ofputil_port_config old_config = port->pp.config;
3439 port->pp.config ^= toggle;
3440 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
3441 connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp,
3447 port_mod_start(struct ofconn *ofconn, struct ofputil_port_mod *pm,
3448 struct ofport **port)
3450 struct ofproto *p = ofconn_get_ofproto(ofconn);
3452 *port = ofproto_get_port(p, pm->port_no);
3454 return OFPERR_OFPPMFC_BAD_PORT;
3456 if (!eth_addr_equals((*port)->pp.hw_addr, pm->hw_addr)) {
3457 return OFPERR_OFPPMFC_BAD_HW_ADDR;
3463 port_mod_finish(struct ofconn *ofconn, struct ofputil_port_mod *pm,
3464 struct ofport *port)
3466 update_port_config(ofconn, port, pm->config, pm->mask);
3467 if (pm->advertise) {
3468 netdev_set_advertisements(port->netdev, pm->advertise);
3473 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
3475 struct ofputil_port_mod pm;
3476 struct ofport *port;
3479 error = reject_slave_controller(ofconn);
3484 error = ofputil_decode_port_mod(oh, &pm, false);
3489 error = port_mod_start(ofconn, &pm, &port);
3491 port_mod_finish(ofconn, &pm, port);
3497 handle_desc_stats_request(struct ofconn *ofconn,
3498 const struct ofp_header *request)
3500 static const char *default_mfr_desc = "Nicira, Inc.";
3501 static const char *default_hw_desc = "Open vSwitch";
3502 static const char *default_sw_desc = VERSION;
3503 static const char *default_serial_desc = "None";
3504 static const char *default_dp_desc = "None";
3506 struct ofproto *p = ofconn_get_ofproto(ofconn);
3507 struct ofp_desc_stats *ods;
3510 msg = ofpraw_alloc_stats_reply(request, 0);
3511 ods = ofpbuf_put_zeros(msg, sizeof *ods);
3512 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3513 sizeof ods->mfr_desc);
3514 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3515 sizeof ods->hw_desc);
3516 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3517 sizeof ods->sw_desc);
3518 ovs_strlcpy(ods->serial_num,
3519 p->serial_desc ? p->serial_desc : default_serial_desc,
3520 sizeof ods->serial_num);
3521 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3522 sizeof ods->dp_desc);
3523 ofconn_send_reply(ofconn, msg);
3529 handle_table_stats_request(struct ofconn *ofconn,
3530 const struct ofp_header *request)
3532 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3533 struct ofputil_table_features *features;
3534 struct ofputil_table_stats *stats;
3535 struct ofpbuf *reply;
3538 query_tables(ofproto, &features, &stats);
3540 reply = ofputil_encode_table_stats_reply(request);
3541 for (i = 0; i < ofproto->n_tables; i++) {
3542 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3543 ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
3546 ofconn_send_reply(ofconn, reply);
3555 handle_table_features_request(struct ofconn *ofconn,
3556 const struct ofp_header *request)
3558 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3559 struct ofputil_table_features *features;
3560 struct ovs_list replies;
3564 ofpbuf_use_const(&msg, request, ntohs(request->length));
3565 ofpraw_pull_assert(&msg);
3566 if (msg.size || ofpmp_more(request)) {
3567 return OFPERR_OFPTFFC_EPERM;
3570 query_tables(ofproto, &features, NULL);
3572 ofpmp_init(&replies, request);
3573 for (i = 0; i < ofproto->n_tables; i++) {
3574 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3575 ofputil_append_table_features_reply(&features[i], &replies);
3578 ofconn_send_replies(ofconn, &replies);
3586 query_table_desc__(struct ofputil_table_desc *td,
3587 struct ofproto *ofproto, uint8_t table_id)
3589 unsigned int count = ofproto->tables[table_id].n_flows;
3590 unsigned int max_flows = ofproto->tables[table_id].max_flows;
3592 td->table_id = table_id;
3593 td->eviction = (ofproto->tables[table_id].eviction & EVICTION_OPENFLOW
3594 ? OFPUTIL_TABLE_EVICTION_ON
3595 : OFPUTIL_TABLE_EVICTION_OFF);
3596 td->eviction_flags = OFPROTO_EVICTION_FLAGS;
3597 td->vacancy = (ofproto->tables[table_id].vacancy_enabled
3598 ? OFPUTIL_TABLE_VACANCY_ON
3599 : OFPUTIL_TABLE_VACANCY_OFF);
3600 td->table_vacancy.vacancy_down = ofproto->tables[table_id].vacancy_down;
3601 td->table_vacancy.vacancy_up = ofproto->tables[table_id].vacancy_up;
3602 td->table_vacancy.vacancy = max_flows ? (count * 100) / max_flows : 0;
3605 /* This function queries the database for dumping table-desc. */
3607 query_tables_desc(struct ofproto *ofproto, struct ofputil_table_desc **descp)
3609 struct ofputil_table_desc *table_desc;
3612 table_desc = *descp = xcalloc(ofproto->n_tables, sizeof *table_desc);
3613 for (i = 0; i < ofproto->n_tables; i++) {
3614 struct ofputil_table_desc *td = &table_desc[i];
3615 query_table_desc__(td, ofproto, i);
3619 /* Function to handle dump-table-desc request. */
3621 handle_table_desc_request(struct ofconn *ofconn,
3622 const struct ofp_header *request)
3624 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3625 struct ofputil_table_desc *table_desc;
3626 struct ovs_list replies;
3629 query_tables_desc(ofproto, &table_desc);
3630 ofpmp_init(&replies, request);
3631 for (i = 0; i < ofproto->n_tables; i++) {
3632 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3633 ofputil_append_table_desc_reply(&table_desc[i], &replies,
3637 ofconn_send_replies(ofconn, &replies);
3643 append_port_stat(struct ofport *port, struct ovs_list *replies)
3645 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
3647 calc_duration(port->created, time_msec(),
3648 &ops.duration_sec, &ops.duration_nsec);
3650 /* Intentionally ignore return value, since errors will set
3651 * 'stats' to all-1s, which is correct for OpenFlow, and
3652 * netdev_get_stats() will log errors. */
3653 ofproto_port_get_stats(port, &ops.stats);
3655 ofputil_append_port_stat(replies, &ops);
3659 handle_port_request(struct ofconn *ofconn,
3660 const struct ofp_header *request, ofp_port_t port_no,
3661 void (*cb)(struct ofport *, struct ovs_list *replies))
3663 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3664 struct ofport *port;
3665 struct ovs_list replies;
3667 ofpmp_init(&replies, request);
3668 if (port_no != OFPP_ANY) {
3669 port = ofproto_get_port(ofproto, port_no);
3674 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3679 ofconn_send_replies(ofconn, &replies);
3683 handle_port_stats_request(struct ofconn *ofconn,
3684 const struct ofp_header *request)
3689 error = ofputil_decode_port_stats_request(request, &port_no);
3691 handle_port_request(ofconn, request, port_no, append_port_stat);
3697 append_port_desc(struct ofport *port, struct ovs_list *replies)
3699 ofputil_append_port_desc_stats_reply(&port->pp, replies);
3703 handle_port_desc_stats_request(struct ofconn *ofconn,
3704 const struct ofp_header *request)
3709 error = ofputil_decode_port_desc_stats_request(request, &port_no);
3711 handle_port_request(ofconn, request, port_no, append_port_desc);
3717 hash_cookie(ovs_be64 cookie)
3719 return hash_uint64((OVS_FORCE uint64_t)cookie);
3723 cookies_insert(struct ofproto *ofproto, struct rule *rule)
3724 OVS_REQUIRES(ofproto_mutex)
3726 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3727 hash_cookie(rule->flow_cookie));
3731 cookies_remove(struct ofproto *ofproto, struct rule *rule)
3732 OVS_REQUIRES(ofproto_mutex)
3734 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3738 calc_duration(long long int start, long long int now,
3739 uint32_t *sec, uint32_t *nsec)
3741 long long int msecs = now - start;
3742 *sec = msecs / 1000;
3743 *nsec = (msecs % 1000) * (1000 * 1000);
3746 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
3747 * true if 'table_id' is OK, false otherwise. */
3749 check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3751 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
3754 static struct oftable *
3755 next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
3757 struct oftable *table;
3759 for (table = &ofproto->tables[table_id];
3760 table < &ofproto->tables[ofproto->n_tables];
3762 if (!(table->flags & OFTABLE_HIDDEN)) {
3770 static struct oftable *
3771 first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
3773 if (table_id == 0xff) {
3774 return next_visible_table(ofproto, 0);
3775 } else if (table_id < ofproto->n_tables) {
3776 return &ofproto->tables[table_id];
3782 static struct oftable *
3783 next_matching_table(const struct ofproto *ofproto,
3784 const struct oftable *table, uint8_t table_id)
3786 return (table_id == 0xff
3787 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
3791 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
3793 * - If TABLE_ID is 0xff, this iterates over every classifier table in
3794 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
3796 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
3797 * only once, for that table. (This can be used to access tables marked
3800 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3801 * entered at all. (Perhaps you should have validated TABLE_ID with
3802 * check_table_id().)
3804 * All parameters are evaluated multiple times.
3806 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3807 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3809 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
3811 /* Initializes 'criteria' in a straightforward way based on the other
3814 * By default, the criteria include flows that are read-only, on the assumption
3815 * that the collected flows won't be modified. Call rule_criteria_require_rw()
3816 * if flows will be modified.
3818 * For "loose" matching, the 'priority' parameter is unimportant and may be
3821 rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
3822 const struct match *match, int priority,
3823 cls_version_t version, ovs_be64 cookie,
3824 ovs_be64 cookie_mask, ofp_port_t out_port,
3827 criteria->table_id = table_id;
3828 cls_rule_init(&criteria->cr, match, priority);
3829 criteria->version = version;
3830 criteria->cookie = cookie;
3831 criteria->cookie_mask = cookie_mask;
3832 criteria->out_port = out_port;
3833 criteria->out_group = out_group;
3835 /* We ordinarily want to skip hidden rules, but there has to be a way for
3836 * code internal to OVS to modify and delete them, so if the criteria
3837 * specify a priority that can only be for a hidden flow, then allow hidden
3838 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3839 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3841 criteria->include_hidden = priority > UINT16_MAX;
3843 /* We assume that the criteria are being used to collect flows for reading
3844 * but not modification. Thus, we should collect read-only flows. */
3845 criteria->include_readonly = true;
3848 /* By default, criteria initialized by rule_criteria_init() will match flows
3849 * that are read-only, on the assumption that the collected flows won't be
3850 * modified. Call this function to match only flows that are be modifiable.
3852 * Specify 'can_write_readonly' as false in ordinary circumstances, true if the
3853 * caller has special privileges that allow it to modify even "read-only"
3856 rule_criteria_require_rw(struct rule_criteria *criteria,
3857 bool can_write_readonly)
3859 criteria->include_readonly = can_write_readonly;
3863 rule_criteria_destroy(struct rule_criteria *criteria)
3865 cls_rule_destroy(&criteria->cr);
3869 rule_collection_init(struct rule_collection *rules)
3871 rules->rules = rules->stub;
3873 rules->capacity = ARRAY_SIZE(rules->stub);
3877 rule_collection_add(struct rule_collection *rules, struct rule *rule)
3879 if (rules->n >= rules->capacity) {
3880 size_t old_size, new_size;
3882 old_size = rules->capacity * sizeof *rules->rules;
3883 rules->capacity *= 2;
3884 new_size = rules->capacity * sizeof *rules->rules;
3886 if (rules->rules == rules->stub) {
3887 rules->rules = xmalloc(new_size);
3888 memcpy(rules->rules, rules->stub, old_size);
3890 rules->rules = xrealloc(rules->rules, new_size);
3894 rules->rules[rules->n++] = rule;
3898 rule_collection_ref(struct rule_collection *rules)
3899 OVS_REQUIRES(ofproto_mutex)
3903 for (i = 0; i < rules->n; i++) {
3904 ofproto_rule_ref(rules->rules[i]);
3909 rule_collection_unref(struct rule_collection *rules)
3913 for (i = 0; i < rules->n; i++) {
3914 ofproto_rule_unref(rules->rules[i]);
3918 /* Returns a NULL-terminated array of rule pointers,
3919 * destroys 'rules'. */
3920 static struct rule **
3921 rule_collection_detach(struct rule_collection *rules)
3923 struct rule **rule_array;
3925 rule_collection_add(rules, NULL);
3927 if (rules->rules == rules->stub) {
3928 rules->rules = xmemdup(rules->rules, rules->n * sizeof *rules->rules);
3931 rule_array = rules->rules;
3932 rule_collection_init(rules);
3938 rule_collection_destroy(struct rule_collection *rules)
3940 if (rules->rules != rules->stub) {
3944 /* Make repeated destruction harmless. */
3945 rule_collection_init(rules);
3948 /* Schedules postponed removal of rules, destroys 'rules'. */
3950 rule_collection_remove_postponed(struct rule_collection *rules)
3951 OVS_REQUIRES(ofproto_mutex)
3954 if (rules->n == 1) {
3955 ovsrcu_postpone(remove_rule_rcu, rules->rules[0]);
3957 ovsrcu_postpone(remove_rules_rcu, rule_collection_detach(rules));
3962 /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This
3963 * function verifies most of the criteria in 'c' itself, but the caller must
3964 * check 'c->cr' itself.
3966 * Rules that have already been marked for removal are not collected.
3968 * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and
3969 * 'c' only includes modifiable rules). */
3971 collect_rule(struct rule *rule, const struct rule_criteria *c,
3972 struct rule_collection *rules, size_t *n_readonly)
3973 OVS_REQUIRES(ofproto_mutex)
3975 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3976 && ofproto_rule_has_out_port(rule, c->out_port)
3977 && ofproto_rule_has_out_group(rule, c->out_group)
3978 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)
3979 && (!rule_is_hidden(rule) || c->include_hidden)
3980 && cls_rule_visible_in_version(&rule->cr, c->version)) {
3981 /* Rule matches all the criteria... */
3982 if (!rule_is_readonly(rule) || c->include_readonly) {
3984 rule_collection_add(rules, rule);
3986 /* ...except it's read-only. */
3992 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3993 * on classifiers rules are done in the "loose" way required for OpenFlow
3994 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
3997 * Returns 0 on success, otherwise an OpenFlow error code. */
3999 collect_rules_loose(struct ofproto *ofproto,
4000 const struct rule_criteria *criteria,
4001 struct rule_collection *rules)
4002 OVS_REQUIRES(ofproto_mutex)
4004 struct oftable *table;
4005 enum ofperr error = 0;
4006 size_t n_readonly = 0;
4008 rule_collection_init(rules);
4010 if (!check_table_id(ofproto, criteria->table_id)) {
4011 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4015 if (criteria->cookie_mask == OVS_BE64_MAX) {
4018 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
4019 hash_cookie(criteria->cookie),
4020 &ofproto->cookies) {
4021 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
4022 collect_rule(rule, criteria, rules, &n_readonly);
4026 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
4029 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr,
4030 criteria->version) {
4031 collect_rule(rule, criteria, rules, &n_readonly);
4037 if (!error && !rules->n && n_readonly) {
4038 /* We didn't find any rules to modify. We did find some read-only
4039 * rules that we're not allowed to modify, so report that. */
4040 error = OFPERR_OFPBRC_EPERM;
4043 rule_collection_destroy(rules);
4048 /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
4049 * on classifiers rules are done in the "strict" way required for OpenFlow
4050 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
4051 * rules on list 'rules'.
4053 * Returns 0 on success, otherwise an OpenFlow error code. */
4055 collect_rules_strict(struct ofproto *ofproto,
4056 const struct rule_criteria *criteria,
4057 struct rule_collection *rules)
4058 OVS_REQUIRES(ofproto_mutex)
4060 struct oftable *table;
4061 size_t n_readonly = 0;
4062 enum ofperr error = 0;
4064 rule_collection_init(rules);
4066 if (!check_table_id(ofproto, criteria->table_id)) {
4067 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4071 if (criteria->cookie_mask == OVS_BE64_MAX) {
4074 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
4075 hash_cookie(criteria->cookie),
4076 &ofproto->cookies) {
4077 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
4078 collect_rule(rule, criteria, rules, &n_readonly);
4082 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
4085 rule = rule_from_cls_rule(classifier_find_rule_exactly(
4086 &table->cls, &criteria->cr,
4087 criteria->version));
4089 collect_rule(rule, criteria, rules, &n_readonly);
4095 if (!error && !rules->n && n_readonly) {
4096 /* We didn't find any rules to modify. We did find some read-only
4097 * rules that we're not allowed to modify, so report that. */
4098 error = OFPERR_OFPBRC_EPERM;
4101 rule_collection_destroy(rules);
4106 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
4107 * forced into the range of a uint16_t. */
4109 age_secs(long long int age_ms)
4111 return (age_ms < 0 ? 0
4112 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
4113 : (unsigned int) age_ms / 1000);
4117 handle_flow_stats_request(struct ofconn *ofconn,
4118 const struct ofp_header *request)
4119 OVS_EXCLUDED(ofproto_mutex)
4121 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4122 struct ofputil_flow_stats_request fsr;
4123 struct rule_criteria criteria;
4124 struct rule_collection rules;
4125 struct ovs_list replies;
4129 error = ofputil_decode_flow_stats_request(&fsr, request);
4134 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, CLS_MAX_VERSION,
4135 fsr.cookie, fsr.cookie_mask, fsr.out_port,
4138 ovs_mutex_lock(&ofproto_mutex);
4139 error = collect_rules_loose(ofproto, &criteria, &rules);
4140 rule_criteria_destroy(&criteria);
4142 rule_collection_ref(&rules);
4144 ovs_mutex_unlock(&ofproto_mutex);
4150 ofpmp_init(&replies, request);
4151 for (i = 0; i < rules.n; i++) {
4152 struct rule *rule = rules.rules[i];
4153 long long int now = time_msec();
4154 struct ofputil_flow_stats fs;
4155 long long int created, used, modified;
4156 const struct rule_actions *actions;
4157 enum ofputil_flow_mod_flags flags;
4159 ovs_mutex_lock(&rule->mutex);
4160 fs.cookie = rule->flow_cookie;
4161 fs.idle_timeout = rule->idle_timeout;
4162 fs.hard_timeout = rule->hard_timeout;
4163 fs.importance = rule->importance;
4164 created = rule->created;
4165 modified = rule->modified;
4166 actions = rule_get_actions(rule);
4167 flags = rule->flags;
4168 ovs_mutex_unlock(&rule->mutex);
4170 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
4171 &fs.byte_count, &used);
4173 minimatch_expand(&rule->cr.match, &fs.match);
4174 fs.table_id = rule->table_id;
4175 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
4176 fs.priority = rule->cr.priority;
4177 fs.idle_age = age_secs(now - used);
4178 fs.hard_age = age_secs(now - modified);
4179 fs.ofpacts = actions->ofpacts;
4180 fs.ofpacts_len = actions->ofpacts_len;
4183 ofputil_append_flow_stats_reply(&fs, &replies);
4186 rule_collection_unref(&rules);
4187 rule_collection_destroy(&rules);
4189 ofconn_send_replies(ofconn, &replies);
4195 flow_stats_ds(struct rule *rule, struct ds *results)
4197 uint64_t packet_count, byte_count;
4198 const struct rule_actions *actions;
4199 long long int created, used;
4201 rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4202 &byte_count, &used);
4204 ovs_mutex_lock(&rule->mutex);
4205 actions = rule_get_actions(rule);
4206 created = rule->created;
4207 ovs_mutex_unlock(&rule->mutex);
4209 if (rule->table_id != 0) {
4210 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
4212 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
4213 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
4214 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
4215 cls_rule_format(&rule->cr, results);
4216 ds_put_char(results, ',');
4218 ds_put_cstr(results, "actions=");
4219 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
4221 ds_put_cstr(results, "\n");
4224 /* Adds a pretty-printed description of all flows to 'results', including
4225 * hidden flows (e.g., set up by in-band control). */
4227 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
4229 struct oftable *table;
4231 OFPROTO_FOR_EACH_TABLE (table, p) {
4234 CLS_FOR_EACH (rule, cr, &table->cls) {
4235 flow_stats_ds(rule, results);
4240 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
4241 * '*engine_type' and '*engine_id', respectively. */
4243 ofproto_get_netflow_ids(const struct ofproto *ofproto,
4244 uint8_t *engine_type, uint8_t *engine_id)
4246 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
4249 /* Checks the status change of CFM on 'ofport'.
4251 * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */
4253 ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
4255 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4256 return (ofport && ofproto->ofproto_class->cfm_status_changed
4257 ? ofproto->ofproto_class->cfm_status_changed(ofport)
4261 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
4262 * Returns 0 if the port's CFM status was successfully stored into
4263 * '*status'. Returns positive errno if the port did not have CFM
4266 * The caller must provide and own '*status', and must free 'status->rmps'.
4267 * '*status' is indeterminate if the return value is non-zero. */
4269 ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
4270 struct cfm_status *status)
4272 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4273 return (ofport && ofproto->ofproto_class->get_cfm_status
4274 ? ofproto->ofproto_class->get_cfm_status(ofport, status)
4279 handle_aggregate_stats_request(struct ofconn *ofconn,
4280 const struct ofp_header *oh)
4281 OVS_EXCLUDED(ofproto_mutex)
4283 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4284 struct ofputil_flow_stats_request request;
4285 struct ofputil_aggregate_stats stats;
4286 bool unknown_packets, unknown_bytes;
4287 struct rule_criteria criteria;
4288 struct rule_collection rules;
4289 struct ofpbuf *reply;
4293 error = ofputil_decode_flow_stats_request(&request, oh);
4298 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
4299 CLS_MAX_VERSION, request.cookie, request.cookie_mask,
4300 request.out_port, request.out_group);
4302 ovs_mutex_lock(&ofproto_mutex);
4303 error = collect_rules_loose(ofproto, &criteria, &rules);
4304 rule_criteria_destroy(&criteria);
4306 rule_collection_ref(&rules);
4308 ovs_mutex_unlock(&ofproto_mutex);
4314 memset(&stats, 0, sizeof stats);
4315 unknown_packets = unknown_bytes = false;
4316 for (i = 0; i < rules.n; i++) {
4317 struct rule *rule = rules.rules[i];
4318 uint64_t packet_count;
4319 uint64_t byte_count;
4322 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4323 &byte_count, &used);
4325 if (packet_count == UINT64_MAX) {
4326 unknown_packets = true;
4328 stats.packet_count += packet_count;
4331 if (byte_count == UINT64_MAX) {
4332 unknown_bytes = true;
4334 stats.byte_count += byte_count;
4339 if (unknown_packets) {
4340 stats.packet_count = UINT64_MAX;
4342 if (unknown_bytes) {
4343 stats.byte_count = UINT64_MAX;
4346 rule_collection_unref(&rules);
4347 rule_collection_destroy(&rules);
4349 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
4350 ofconn_send_reply(ofconn, reply);
4355 struct queue_stats_cbdata {
4356 struct ofport *ofport;
4357 struct ovs_list replies;
4362 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
4363 const struct netdev_queue_stats *stats)
4365 struct ofputil_queue_stats oqs;
4367 oqs.port_no = cbdata->ofport->pp.port_no;
4368 oqs.queue_id = queue_id;
4369 oqs.tx_bytes = stats->tx_bytes;
4370 oqs.tx_packets = stats->tx_packets;
4371 oqs.tx_errors = stats->tx_errors;
4372 if (stats->created != LLONG_MIN) {
4373 calc_duration(stats->created, cbdata->now,
4374 &oqs.duration_sec, &oqs.duration_nsec);
4376 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
4378 ofputil_append_queue_stat(&cbdata->replies, &oqs);
4382 handle_queue_stats_dump_cb(uint32_t queue_id,
4383 struct netdev_queue_stats *stats,
4386 struct queue_stats_cbdata *cbdata = cbdata_;
4388 put_queue_stats(cbdata, queue_id, stats);
4392 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
4393 struct queue_stats_cbdata *cbdata)
4395 cbdata->ofport = port;
4396 if (queue_id == OFPQ_ALL) {
4397 netdev_dump_queue_stats(port->netdev,
4398 handle_queue_stats_dump_cb, cbdata);
4400 struct netdev_queue_stats stats;
4402 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
4403 put_queue_stats(cbdata, queue_id, &stats);
4405 return OFPERR_OFPQOFC_BAD_QUEUE;
4412 handle_queue_stats_request(struct ofconn *ofconn,
4413 const struct ofp_header *rq)
4415 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
4416 struct queue_stats_cbdata cbdata;
4417 struct ofport *port;
4419 struct ofputil_queue_stats_request oqsr;
4421 COVERAGE_INC(ofproto_queue_req);
4423 ofpmp_init(&cbdata.replies, rq);
4424 cbdata.now = time_msec();
4426 error = ofputil_decode_queue_stats_request(rq, &oqsr);
4431 if (oqsr.port_no == OFPP_ANY) {
4432 error = OFPERR_OFPQOFC_BAD_QUEUE;
4433 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
4434 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
4439 port = ofproto_get_port(ofproto, oqsr.port_no);
4441 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
4442 : OFPERR_OFPQOFC_BAD_PORT);
4445 ofconn_send_replies(ofconn, &cbdata.replies);
4447 ofpbuf_list_delete(&cbdata.replies);
4454 evict_rules_from_table(struct oftable *table)
4455 OVS_REQUIRES(ofproto_mutex)
4457 enum ofperr error = 0;
4458 struct rule_collection rules;
4459 unsigned int count = table->n_flows;
4460 unsigned int max_flows = table->max_flows;
4462 rule_collection_init(&rules);
4464 while (count-- > max_flows) {
4467 if (!choose_rule_to_evict(table, &rule)) {
4468 error = OFPERR_OFPFMFC_TABLE_FULL;
4471 eviction_group_remove_rule(rule);
4472 rule_collection_add(&rules, rule);
4475 delete_flows__(&rules, OFPRR_EVICTION, NULL);
4481 get_conjunctions(const struct ofputil_flow_mod *fm,
4482 struct cls_conjunction **conjsp, size_t *n_conjsp)
4483 OVS_REQUIRES(ofproto_mutex)
4485 struct cls_conjunction *conjs = NULL;
4488 const struct ofpact *ofpact;
4489 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4490 if (ofpact->type == OFPACT_CONJUNCTION) {
4492 } else if (ofpact->type != OFPACT_NOTE) {
4493 /* "conjunction" may appear with "note" actions but not with any
4494 * other type of actions. */
4495 ovs_assert(!n_conjs);
4502 conjs = xzalloc(n_conjs * sizeof *conjs);
4503 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4504 if (ofpact->type == OFPACT_CONJUNCTION) {
4505 struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact);
4506 conjs[i].clause = oc->clause;
4507 conjs[i].n_clauses = oc->n_clauses;
4508 conjs[i].id = oc->id;
4515 *n_conjsp = n_conjs;
4518 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
4519 * in which no matching flow already exists in the flow table.
4521 * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on
4522 * success, or an OpenFlow error code on failure.
4524 * On successful return the caller must complete the operation either by
4525 * calling add_flow_finish(), or add_flow_revert() if the operation needs to
4528 * The caller retains ownership of 'fm->ofpacts'. */
4530 add_flow_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
4531 OVS_REQUIRES(ofproto_mutex)
4533 struct ofputil_flow_mod *fm = &ofm->fm;
4534 struct rule **old_rule = &ofm->old_rules.stub[0];
4535 struct rule **new_rule = &ofm->new_rules.stub[0];
4536 struct oftable *table;
4540 struct cls_conjunction *conjs;
4544 if (!check_table_id(ofproto, fm->table_id)) {
4545 error = OFPERR_OFPBRC_BAD_TABLE_ID;
4550 if (fm->table_id == 0xff) {
4551 if (ofproto->ofproto_class->rule_choose_table) {
4552 error = ofproto->ofproto_class->rule_choose_table(ofproto,
4558 ovs_assert(table_id < ofproto->n_tables);
4562 } else if (fm->table_id < ofproto->n_tables) {
4563 table_id = fm->table_id;
4565 return OFPERR_OFPBRC_BAD_TABLE_ID;
4568 table = &ofproto->tables[table_id];
4569 if (table->flags & OFTABLE_READONLY
4570 && !(fm->flags & OFPUTIL_FF_NO_READONLY)) {
4571 return OFPERR_OFPBRC_EPERM;
4574 if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)
4575 && !match_has_default_hidden_fields(&fm->match)) {
4576 VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set "
4577 "non-default values to hidden fields", ofproto->name);
4578 return OFPERR_OFPBRC_EPERM;
4581 cls_rule_init(&cr, &fm->match, fm->priority);
4583 /* Check for the existence of an identical rule.
4584 * This will not return rules earlier marked for removal. */
4585 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr,
4589 /* Check for overlap, if requested. */
4590 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP
4591 && classifier_rule_overlaps(&table->cls, &cr, ofm->version)) {
4592 cls_rule_destroy(&cr);
4593 return OFPERR_OFPFMFC_OVERLAP;
4596 /* If necessary, evict an existing rule to clear out space. */
4597 if (table->n_flows >= table->max_flows) {
4598 if (!choose_rule_to_evict(table, &rule)) {
4599 error = OFPERR_OFPFMFC_TABLE_FULL;
4600 cls_rule_destroy(&cr);
4603 eviction_group_remove_rule(rule);
4604 /* Marks '*old_rule' as an evicted rule rather than replaced rule.
4606 fm->delete_reason = OFPRR_EVICTION;
4610 fm->modify_cookie = true;
4613 /* Allocate new rule. */
4614 error = replace_rule_create(ofproto, fm, &cr, table - ofproto->tables,
4620 get_conjunctions(fm, &conjs, &n_conjs);
4621 replace_rule_start(ofproto, ofm->version, rule, *new_rule, conjs, n_conjs);
4627 /* Revert the effects of add_flow_start(). */
4629 add_flow_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
4630 OVS_REQUIRES(ofproto_mutex)
4632 struct ofputil_flow_mod *fm = &ofm->fm;
4633 struct rule *old_rule = ofm->old_rules.stub[0];
4634 struct rule *new_rule = ofm->new_rules.stub[0];
4636 if (old_rule && fm->delete_reason == OFPRR_EVICTION) {
4637 /* Revert the eviction. */
4638 eviction_group_add_rule(old_rule);
4641 replace_rule_revert(ofproto, old_rule, new_rule);
4644 /* To be called after version bump. */
4646 add_flow_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm,
4647 const struct flow_mod_requester *req)
4648 OVS_REQUIRES(ofproto_mutex)
4650 struct ofputil_flow_mod *fm = &ofm->fm;
4651 struct rule *old_rule = ofm->old_rules.stub[0];
4652 struct rule *new_rule = ofm->new_rules.stub[0];
4653 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4655 replace_rule_finish(ofproto, fm, req, old_rule, new_rule, &dead_cookies);
4656 learned_cookies_flush(ofproto, &dead_cookies);
4659 ovsrcu_postpone(remove_rule_rcu, old_rule);
4661 if (minimask_get_vid_mask(new_rule->cr.match.mask) == VLAN_VID_MASK) {
4662 if (ofproto->vlan_bitmap) {
4663 uint16_t vid = miniflow_get_vid(new_rule->cr.match.flow);
4665 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
4666 bitmap_set1(ofproto->vlan_bitmap, vid);
4667 ofproto->vlans_changed = true;
4670 ofproto->vlans_changed = true;
4674 ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0,
4675 req ? req->ofconn : NULL,
4676 req ? req->request->xid : 0, NULL);
4679 send_buffered_packet(req, fm->buffer_id, new_rule);
4682 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
4684 /* Create a new rule based on attributes in 'fm', match in 'cr', 'table_id',
4685 * and 'old_rule'. Note that the rule is NOT inserted into a any data
4686 * structures yet. Takes ownership of 'cr'. */
4688 replace_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4689 struct cls_rule *cr, uint8_t table_id,
4690 struct rule *old_rule, struct rule **new_rule)
4695 /* Allocate new rule. */
4696 rule = ofproto->ofproto_class->rule_alloc();
4698 cls_rule_destroy(cr);
4699 VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name);
4700 return OFPERR_OFPFMFC_UNKNOWN;
4703 /* Initialize base state. */
4704 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
4705 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr);
4706 ovs_refcount_init(&rule->ref_count);
4707 rule->flow_cookie = fm->new_cookie;
4708 rule->created = rule->modified = time_msec();
4710 ovs_mutex_init(&rule->mutex);
4711 ovs_mutex_lock(&rule->mutex);
4712 rule->idle_timeout = fm->idle_timeout;
4713 rule->hard_timeout = fm->hard_timeout;
4714 *CONST_CAST(uint16_t *, &rule->importance) = fm->importance;
4715 rule->removed_reason = OVS_OFPRR_NONE;
4717 *CONST_CAST(uint8_t *, &rule->table_id) = table_id;
4718 rule->flags = fm->flags & OFPUTIL_FF_STATE;
4719 *CONST_CAST(const struct rule_actions **, &rule->actions)
4720 = rule_actions_create(fm->ofpacts, fm->ofpacts_len);
4721 list_init(&rule->meter_list_node);
4722 rule->eviction_group = NULL;
4723 list_init(&rule->expirable);
4724 rule->monitor_flags = 0;
4725 rule->add_seqno = 0;
4726 rule->modify_seqno = 0;
4728 /* Copy values from old rule for modify semantics. */
4729 if (old_rule && fm->delete_reason != OFPRR_EVICTION) {
4730 bool change_cookie = (fm->modify_cookie
4731 && fm->new_cookie != OVS_BE64_MAX
4732 && fm->new_cookie != old_rule->flow_cookie);
4734 ovs_mutex_lock(&old_rule->mutex);
4735 if (fm->command != OFPFC_ADD) {
4736 rule->idle_timeout = old_rule->idle_timeout;
4737 rule->hard_timeout = old_rule->hard_timeout;
4738 *CONST_CAST(uint16_t *, &rule->importance) = old_rule->importance;
4739 rule->flags = old_rule->flags;
4740 rule->created = old_rule->created;
4742 if (!change_cookie) {
4743 rule->flow_cookie = old_rule->flow_cookie;
4745 ovs_mutex_unlock(&old_rule->mutex);
4747 ovs_mutex_unlock(&rule->mutex);
4749 /* Construct rule, initializing derived state. */
4750 error = ofproto->ofproto_class->rule_construct(rule);
4752 ofproto_rule_destroy__(rule);
4756 rule->removed = true; /* Not yet in ofproto data structures. */
4763 replace_rule_start(struct ofproto *ofproto, cls_version_t version,
4764 struct rule *old_rule, struct rule *new_rule,
4765 struct cls_conjunction *conjs, size_t n_conjs)
4767 struct oftable *table = &ofproto->tables[new_rule->table_id];
4769 /* 'old_rule' may be either an evicted rule or replaced rule. */
4771 /* Mark the old rule for removal in the next version. */
4772 cls_rule_make_invisible_in_version(&old_rule->cr, version);
4776 /* Insert flow to the classifier, so that later flow_mods may relate
4777 * to it. This is reversible, in case later errors require this to
4779 ofproto_rule_insert__(ofproto, new_rule);
4780 /* Make the new rule visible for classifier lookups only from the next
4782 classifier_insert(&table->cls, &new_rule->cr, version, conjs, n_conjs);
4785 static void replace_rule_revert(struct ofproto *ofproto,
4786 struct rule *old_rule, struct rule *new_rule)
4788 struct oftable *table = &ofproto->tables[new_rule->table_id];
4791 /* Restore the original visibility of the old rule. */
4792 cls_rule_restore_visibility(&old_rule->cr);
4794 /* Restore table's rule count. */
4798 /* Remove the new rule immediately. It was never visible to lookups. */
4799 if (!classifier_remove(&table->cls, &new_rule->cr)) {
4802 ofproto_rule_remove__(ofproto, new_rule);
4803 /* The rule was not inserted to the ofproto provider, so we can
4804 * release it without deleting it from the ofproto provider. */
4805 ofproto_rule_unref(new_rule);
4808 /* Adds the 'new_rule', replacing the 'old_rule'. */
4810 replace_rule_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4811 const struct flow_mod_requester *req,
4812 struct rule *old_rule, struct rule *new_rule,
4813 struct ovs_list *dead_cookies)
4814 OVS_REQUIRES(ofproto_mutex)
4816 bool forward_stats = !(fm->flags & OFPUTIL_FF_RESET_COUNTS);
4817 struct rule *replaced_rule;
4819 replaced_rule = fm->delete_reason != OFPRR_EVICTION ? old_rule : NULL;
4821 /* Insert the new flow to the ofproto provider. A non-NULL 'replaced_rule'
4822 * is a duplicate rule the 'new_rule' is replacing. The provider should
4823 * link the stats from the old rule to the new one if 'forward_stats' is
4824 * 'true'. The 'replaced_rule' will be deleted right after this call. */
4825 ofproto->ofproto_class->rule_insert(new_rule, replaced_rule,
4827 learned_cookies_inc(ofproto, rule_get_actions(new_rule));
4830 const struct rule_actions *old_actions = rule_get_actions(old_rule);
4832 /* Remove the old rule from data structures. Removal from the
4833 * classifier and the deletion of the rule is RCU postponed by the
4835 ofproto_rule_remove__(ofproto, old_rule);
4836 learned_cookies_dec(ofproto, old_actions, dead_cookies);
4838 if (replaced_rule) {
4839 enum nx_flow_update_event event = fm->command == OFPFC_ADD
4840 ? NXFME_ADDED : NXFME_MODIFIED;
4842 bool change_cookie = (fm->modify_cookie
4843 && fm->new_cookie != OVS_BE64_MAX
4844 && fm->new_cookie != old_rule->flow_cookie);
4846 bool change_actions = !ofpacts_equal(fm->ofpacts,
4848 old_actions->ofpacts,
4849 old_actions->ofpacts_len);
4851 if (event != NXFME_MODIFIED || change_actions || change_cookie) {
4852 ofmonitor_report(ofproto->connmgr, new_rule, event, 0,
4853 req ? req->ofconn : NULL,
4854 req ? req->request->xid : 0,
4855 change_actions ? old_actions : NULL);
4858 /* XXX: This is slight duplication with delete_flows_finish__() */
4860 old_rule->removed_reason = OFPRR_EVICTION;
4862 ofmonitor_report(ofproto->connmgr, old_rule, NXFME_DELETED,
4864 req ? req->ofconn : NULL,
4865 req ? req->request->xid : 0, NULL);
4871 modify_flows_start__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
4872 OVS_REQUIRES(ofproto_mutex)
4874 struct ofputil_flow_mod *fm = &ofm->fm;
4875 struct rule_collection *old_rules = &ofm->old_rules;
4876 struct rule_collection *new_rules = &ofm->new_rules;
4879 rule_collection_init(new_rules);
4881 if (old_rules->n > 0) {
4882 struct cls_conjunction *conjs;
4886 /* Create a new 'modified' rule for each old rule. */
4887 for (i = 0; i < old_rules->n; i++) {
4888 struct rule *old_rule = old_rules->rules[i];
4889 struct rule *new_rule;
4892 cls_rule_clone(&cr, &old_rule->cr);
4893 error = replace_rule_create(ofproto, fm, &cr, old_rule->table_id,
4894 old_rule, &new_rule);
4896 rule_collection_add(new_rules, new_rule);
4898 rule_collection_unref(new_rules);
4899 rule_collection_destroy(new_rules);
4903 ovs_assert(new_rules->n == old_rules->n);
4905 get_conjunctions(fm, &conjs, &n_conjs);
4906 for (i = 0; i < old_rules->n; i++) {
4907 replace_rule_start(ofproto, ofm->version, old_rules->rules[i],
4908 new_rules->rules[i], conjs, n_conjs);
4911 } else if (!(fm->cookie_mask != htonll(0)
4912 || fm->new_cookie == OVS_BE64_MAX)) {
4913 /* No match, add a new flow. */
4914 error = add_flow_start(ofproto, ofm);
4916 ovs_assert(fm->delete_reason == OFPRR_EVICTION
4917 || !old_rules->rules[0]);
4927 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4930 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4933 modify_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
4934 OVS_REQUIRES(ofproto_mutex)
4936 struct ofputil_flow_mod *fm = &ofm->fm;
4937 struct rule_collection *old_rules = &ofm->old_rules;
4938 struct rule_criteria criteria;
4941 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION,
4942 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG_ANY);
4943 rule_criteria_require_rw(&criteria,
4944 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
4945 error = collect_rules_loose(ofproto, &criteria, old_rules);
4946 rule_criteria_destroy(&criteria);
4949 error = modify_flows_start__(ofproto, ofm);
4953 rule_collection_destroy(old_rules);
4959 modify_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
4960 OVS_REQUIRES(ofproto_mutex)
4962 struct rule_collection *old_rules = &ofm->old_rules;
4963 struct rule_collection *new_rules = &ofm->new_rules;
4965 /* Old rules were not changed yet, only need to revert new rules. */
4966 if (old_rules->n == 0 && new_rules->n == 1) {
4967 add_flow_revert(ofproto, ofm);
4968 } else if (old_rules->n > 0) {
4969 for (size_t i = 0; i < old_rules->n; i++) {
4970 replace_rule_revert(ofproto, old_rules->rules[i],
4971 new_rules->rules[i]);
4973 rule_collection_destroy(new_rules);
4974 rule_collection_destroy(old_rules);
4979 modify_flows_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm,
4980 const struct flow_mod_requester *req)
4981 OVS_REQUIRES(ofproto_mutex)
4983 struct ofputil_flow_mod *fm = &ofm->fm;
4984 struct rule_collection *old_rules = &ofm->old_rules;
4985 struct rule_collection *new_rules = &ofm->new_rules;
4987 if (old_rules->n == 0 && new_rules->n == 1) {
4988 add_flow_finish(ofproto, ofm, req);
4989 } else if (old_rules->n > 0) {
4990 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
4992 ovs_assert(new_rules->n == old_rules->n);
4994 for (size_t i = 0; i < old_rules->n; i++) {
4995 replace_rule_finish(ofproto, fm, req, old_rules->rules[i],
4996 new_rules->rules[i], &dead_cookies);
4998 learned_cookies_flush(ofproto, &dead_cookies);
4999 rule_collection_remove_postponed(old_rules);
5001 send_buffered_packet(req, fm->buffer_id, new_rules->rules[0]);
5002 rule_collection_destroy(new_rules);
5006 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
5007 * code on failure. */
5009 modify_flow_start_strict(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
5010 OVS_REQUIRES(ofproto_mutex)
5012 struct ofputil_flow_mod *fm = &ofm->fm;
5013 struct rule_collection *old_rules = &ofm->old_rules;
5014 struct rule_criteria criteria;
5017 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
5018 CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, OFPP_ANY,
5020 rule_criteria_require_rw(&criteria,
5021 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
5022 error = collect_rules_strict(ofproto, &criteria, old_rules);
5023 rule_criteria_destroy(&criteria);
5026 /* collect_rules_strict() can return max 1 rule. */
5027 error = modify_flows_start__(ofproto, ofm);
5031 rule_collection_destroy(old_rules);
5036 /* OFPFC_DELETE implementation. */
5039 delete_flows_start__(struct ofproto *ofproto, cls_version_t version,
5040 const struct rule_collection *rules)
5041 OVS_REQUIRES(ofproto_mutex)
5043 for (size_t i = 0; i < rules->n; i++) {
5044 struct rule *rule = rules->rules[i];
5045 struct oftable *table = &ofproto->tables[rule->table_id];
5048 cls_rule_make_invisible_in_version(&rule->cr, version);
5053 delete_flows_finish__(struct ofproto *ofproto,
5054 struct rule_collection *rules,
5055 enum ofp_flow_removed_reason reason,
5056 const struct flow_mod_requester *req)
5057 OVS_REQUIRES(ofproto_mutex)
5060 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
5062 for (size_t i = 0; i < rules->n; i++) {
5063 struct rule *rule = rules->rules[i];
5065 /* This value will be used to send the flow removed message right
5066 * before the rule is actually destroyed. */
5067 rule->removed_reason = reason;
5069 ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
5070 req ? req->ofconn : NULL,
5071 req ? req->request->xid : 0, NULL);
5072 ofproto_rule_remove__(ofproto, rule);
5073 learned_cookies_dec(ofproto, rule_get_actions(rule),
5076 rule_collection_remove_postponed(rules);
5078 learned_cookies_flush(ofproto, &dead_cookies);
5082 /* Deletes the rules listed in 'rules'.
5083 * The deleted rules will become invisible to the lookups in the next version.
5084 * Destroys 'rules'. */
5086 delete_flows__(struct rule_collection *rules,
5087 enum ofp_flow_removed_reason reason,
5088 const struct flow_mod_requester *req)
5089 OVS_REQUIRES(ofproto_mutex)
5092 struct ofproto *ofproto = rules->rules[0]->ofproto;
5094 delete_flows_start__(ofproto, ofproto->tables_version + 1, rules);
5095 ofproto_bump_tables_version(ofproto);
5096 delete_flows_finish__(ofproto, rules, reason, req);
5097 ofmonitor_flush(ofproto->connmgr);
5101 /* Implements OFPFC_DELETE. */
5103 delete_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
5104 OVS_REQUIRES(ofproto_mutex)
5106 const struct ofputil_flow_mod *fm = &ofm->fm;
5107 struct rule_collection *rules = &ofm->old_rules;
5108 struct rule_criteria criteria;
5111 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION,
5112 fm->cookie, fm->cookie_mask, fm->out_port,
5114 rule_criteria_require_rw(&criteria,
5115 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
5116 error = collect_rules_loose(ofproto, &criteria, rules);
5117 rule_criteria_destroy(&criteria);
5120 delete_flows_start__(ofproto, ofm->version, rules);
5127 delete_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
5128 OVS_REQUIRES(ofproto_mutex)
5130 struct rule_collection *rules = &ofm->old_rules;
5132 for (size_t i = 0; i < rules->n; i++) {
5133 struct rule *rule = rules->rules[i];
5134 struct oftable *table = &ofproto->tables[rule->table_id];
5136 /* Restore table's rule count. */
5139 /* Restore the original visibility of the rule. */
5140 cls_rule_restore_visibility(&rule->cr);
5142 rule_collection_destroy(rules);
5146 delete_flows_finish(struct ofproto *ofproto,
5147 struct ofproto_flow_mod *ofm,
5148 const struct flow_mod_requester *req)
5149 OVS_REQUIRES(ofproto_mutex)
5151 delete_flows_finish__(ofproto, &ofm->old_rules, ofm->fm.delete_reason,
5155 /* Implements OFPFC_DELETE_STRICT. */
5157 delete_flow_start_strict(struct ofproto *ofproto,
5158 struct ofproto_flow_mod *ofm)
5159 OVS_REQUIRES(ofproto_mutex)
5161 const struct ofputil_flow_mod *fm = &ofm->fm;
5162 struct rule_collection *rules = &ofm->old_rules;
5163 struct rule_criteria criteria;
5166 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
5167 CLS_MAX_VERSION, fm->cookie, fm->cookie_mask,
5168 fm->out_port, fm->out_group);
5169 rule_criteria_require_rw(&criteria,
5170 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
5171 error = collect_rules_strict(ofproto, &criteria, rules);
5172 rule_criteria_destroy(&criteria);
5175 delete_flows_start__(ofproto, ofm->version, rules);
5181 /* This may only be called by rule_destroy_cb()! */
5183 ofproto_rule_send_removed(struct rule *rule)
5184 OVS_EXCLUDED(ofproto_mutex)
5186 struct ofputil_flow_removed fr;
5189 minimatch_expand(&rule->cr.match, &fr.match);
5190 fr.priority = rule->cr.priority;
5192 ovs_mutex_lock(&ofproto_mutex);
5193 fr.cookie = rule->flow_cookie;
5194 fr.reason = rule->removed_reason;
5195 fr.table_id = rule->table_id;
5196 calc_duration(rule->created, time_msec(),
5197 &fr.duration_sec, &fr.duration_nsec);
5198 ovs_mutex_lock(&rule->mutex);
5199 fr.idle_timeout = rule->idle_timeout;
5200 fr.hard_timeout = rule->hard_timeout;
5201 ovs_mutex_unlock(&rule->mutex);
5202 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
5203 &fr.byte_count, &used);
5204 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
5205 ovs_mutex_unlock(&ofproto_mutex);
5208 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
5209 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
5212 * ofproto implementation ->run() functions should use this function to expire
5213 * OpenFlow flows. */
5215 ofproto_rule_expire(struct rule *rule, uint8_t reason)
5216 OVS_REQUIRES(ofproto_mutex)
5218 struct rule_collection rules;
5220 rules.rules = rules.stub;
5222 rules.stub[0] = rule;
5223 delete_flows__(&rules, reason, NULL);
5226 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
5227 * means "infinite". */
5229 reduce_timeout(uint16_t max, uint16_t *timeout)
5231 if (max && (!*timeout || *timeout > max)) {
5236 /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
5237 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
5238 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
5240 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
5242 ofproto_rule_reduce_timeouts(struct rule *rule,
5243 uint16_t idle_timeout, uint16_t hard_timeout)
5244 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
5246 if (!idle_timeout && !hard_timeout) {
5250 ovs_mutex_lock(&ofproto_mutex);
5251 if (list_is_empty(&rule->expirable)) {
5252 list_insert(&rule->ofproto->expirable, &rule->expirable);
5254 ovs_mutex_unlock(&ofproto_mutex);
5256 ovs_mutex_lock(&rule->mutex);
5257 reduce_timeout(idle_timeout, &rule->idle_timeout);
5258 reduce_timeout(hard_timeout, &rule->hard_timeout);
5259 ovs_mutex_unlock(&rule->mutex);
5263 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5264 OVS_EXCLUDED(ofproto_mutex)
5266 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5267 struct ofproto_flow_mod ofm;
5268 uint64_t ofpacts_stub[1024 / 8];
5269 struct ofpbuf ofpacts;
5272 error = reject_slave_controller(ofconn);
5277 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
5278 error = ofputil_decode_flow_mod(&ofm.fm, oh, ofconn_get_protocol(ofconn),
5280 u16_to_ofp(ofproto->max_ports),
5283 error = ofproto_check_ofpacts(ofproto, ofm.fm.ofpacts,
5284 ofm.fm.ofpacts_len);
5287 struct flow_mod_requester req;
5289 req.ofconn = ofconn;
5291 error = handle_flow_mod__(ofproto, &ofm, &req);
5294 goto exit_free_ofpacts;
5297 ofconn_report_flow_mod(ofconn, ofm.fm.command);
5300 ofpbuf_uninit(&ofpacts);
5306 handle_flow_mod__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm,
5307 const struct flow_mod_requester *req)
5308 OVS_EXCLUDED(ofproto_mutex)
5312 ovs_mutex_lock(&ofproto_mutex);
5313 ofm->version = ofproto->tables_version + 1;
5314 error = ofproto_flow_mod_start(ofproto, ofm);
5316 ofproto_bump_tables_version(ofproto);
5317 ofproto_flow_mod_finish(ofproto, ofm, req);
5319 ofmonitor_flush(ofproto->connmgr);
5320 ovs_mutex_unlock(&ofproto_mutex);
5322 run_rule_executes(ofproto);
5327 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
5329 struct ofputil_role_request request;
5330 struct ofputil_role_request reply;
5334 error = ofputil_decode_role_message(oh, &request);
5339 if (request.role != OFPCR12_ROLE_NOCHANGE) {
5340 if (request.role != OFPCR12_ROLE_EQUAL
5341 && request.have_generation_id
5342 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
5343 return OFPERR_OFPRRFC_STALE;
5346 ofconn_set_role(ofconn, request.role);
5349 reply.role = ofconn_get_role(ofconn);
5350 reply.have_generation_id = ofconn_get_master_election_id(
5351 ofconn, &reply.generation_id);
5352 buf = ofputil_encode_role_reply(oh, &reply);
5353 ofconn_send_reply(ofconn, buf);
5359 handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
5360 const struct ofp_header *oh)
5362 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
5363 enum ofputil_protocol cur, next;
5365 cur = ofconn_get_protocol(ofconn);
5366 next = ofputil_protocol_set_tid(cur, msg->set != 0);
5367 ofconn_set_protocol(ofconn, next);
5373 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
5375 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
5376 enum ofputil_protocol cur, next;
5377 enum ofputil_protocol next_base;
5379 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
5381 return OFPERR_OFPBRC_EPERM;
5384 cur = ofconn_get_protocol(ofconn);
5385 next = ofputil_protocol_set_base(cur, next_base);
5386 ofconn_set_protocol(ofconn, next);
5392 handle_nxt_set_packet_in_format(struct ofconn *ofconn,
5393 const struct ofp_header *oh)
5395 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
5398 format = ntohl(msg->format);
5399 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
5400 return OFPERR_OFPBRC_EPERM;
5403 ofconn_set_packet_in_format(ofconn, format);
5408 handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
5410 struct ofputil_async_cfg basis = ofconn_get_async_config(ofconn);
5411 struct ofputil_async_cfg ac;
5414 error = ofputil_decode_set_async_config(oh, false, &basis, &ac);
5419 ofconn_set_async_config(ofconn, &ac);
5420 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
5421 !ofconn_get_miss_send_len(ofconn)) {
5422 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
5429 handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
5431 struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn);
5432 ofconn_send_reply(ofconn, ofputil_encode_get_async_reply(oh, &ac));
5438 handle_nxt_set_controller_id(struct ofconn *ofconn,
5439 const struct ofp_header *oh)
5441 const struct nx_controller_id *nci = ofpmsg_body(oh);
5443 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
5444 return OFPERR_NXBRC_MUST_BE_ZERO;
5447 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
5452 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
5456 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
5457 ? OFPRAW_OFPT10_BARRIER_REPLY
5458 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
5459 ofconn_send_reply(ofconn, buf);
5464 ofproto_compose_flow_refresh_update(const struct rule *rule,
5465 enum nx_flow_monitor_flags flags,
5466 struct ovs_list *msgs)
5467 OVS_REQUIRES(ofproto_mutex)
5469 const struct rule_actions *actions;
5470 struct ofputil_flow_update fu;
5473 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
5474 ? NXFME_ADDED : NXFME_MODIFIED);
5476 ovs_mutex_lock(&rule->mutex);
5477 fu.idle_timeout = rule->idle_timeout;
5478 fu.hard_timeout = rule->hard_timeout;
5479 ovs_mutex_unlock(&rule->mutex);
5480 fu.table_id = rule->table_id;
5481 fu.cookie = rule->flow_cookie;
5482 minimatch_expand(&rule->cr.match, &match);
5484 fu.priority = rule->cr.priority;
5486 actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL;
5487 fu.ofpacts = actions ? actions->ofpacts : NULL;
5488 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
5490 if (list_is_empty(msgs)) {
5491 ofputil_start_flow_update(msgs);
5493 ofputil_append_flow_update(&fu, msgs);
5497 ofmonitor_compose_refresh_updates(struct rule_collection *rules,
5498 struct ovs_list *msgs)
5499 OVS_REQUIRES(ofproto_mutex)
5503 for (i = 0; i < rules->n; i++) {
5504 struct rule *rule = rules->rules[i];
5505 enum nx_flow_monitor_flags flags = rule->monitor_flags;
5506 rule->monitor_flags = 0;
5508 ofproto_compose_flow_refresh_update(rule, flags, msgs);
5513 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
5514 struct rule *rule, uint64_t seqno,
5515 struct rule_collection *rules)
5516 OVS_REQUIRES(ofproto_mutex)
5518 enum nx_flow_monitor_flags update;
5520 if (rule_is_hidden(rule)) {
5524 if (!ofproto_rule_has_out_port(rule, m->out_port)) {
5529 if (rule->add_seqno > seqno) {
5530 update = NXFMF_ADD | NXFMF_MODIFY;
5531 } else if (rule->modify_seqno > seqno) {
5532 update = NXFMF_MODIFY;
5537 if (!(m->flags & update)) {
5541 update = NXFMF_INITIAL;
5544 if (!rule->monitor_flags) {
5545 rule_collection_add(rules, rule);
5547 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
5551 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
5553 struct rule_collection *rules)
5554 OVS_REQUIRES(ofproto_mutex)
5556 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
5557 const struct oftable *table;
5558 struct cls_rule target;
5560 cls_rule_init_from_minimatch(&target, &m->match, 0);
5561 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
5564 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target, CLS_MAX_VERSION) {
5565 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
5568 cls_rule_destroy(&target);
5572 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
5573 struct rule_collection *rules)
5574 OVS_REQUIRES(ofproto_mutex)
5576 if (m->flags & NXFMF_INITIAL) {
5577 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
5582 ofmonitor_collect_resume_rules(struct ofmonitor *m,
5583 uint64_t seqno, struct rule_collection *rules)
5584 OVS_REQUIRES(ofproto_mutex)
5586 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
5590 flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
5591 OVS_REQUIRES(ofproto_mutex)
5593 struct ofmonitor *m;
5596 m = ofmonitor_lookup(ofconn, id);
5598 ofmonitor_destroy(m);
5601 error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
5608 handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
5609 OVS_EXCLUDED(ofproto_mutex)
5611 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5612 struct ofmonitor **monitors;
5613 size_t n_monitors, allocated_monitors;
5614 struct rule_collection rules;
5615 struct ovs_list replies;
5620 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5622 n_monitors = allocated_monitors = 0;
5624 ovs_mutex_lock(&ofproto_mutex);
5626 struct ofputil_flow_monitor_request request;
5627 struct ofmonitor *m;
5630 retval = ofputil_decode_flow_monitor_request(&request, &b);
5631 if (retval == EOF) {
5633 } else if (retval) {
5638 if (request.table_id != 0xff
5639 && request.table_id >= ofproto->n_tables) {
5640 error = OFPERR_OFPBRC_BAD_TABLE_ID;
5644 error = ofmonitor_create(&request, ofconn, &m);
5649 if (n_monitors >= allocated_monitors) {
5650 monitors = x2nrealloc(monitors, &allocated_monitors,
5653 monitors[n_monitors++] = m;
5656 rule_collection_init(&rules);
5657 for (i = 0; i < n_monitors; i++) {
5658 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
5661 ofpmp_init(&replies, oh);
5662 ofmonitor_compose_refresh_updates(&rules, &replies);
5663 ovs_mutex_unlock(&ofproto_mutex);
5665 rule_collection_destroy(&rules);
5667 ofconn_send_replies(ofconn, &replies);
5673 for (i = 0; i < n_monitors; i++) {
5674 ofmonitor_destroy(monitors[i]);
5677 ovs_mutex_unlock(&ofproto_mutex);
5683 handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
5684 OVS_EXCLUDED(ofproto_mutex)
5689 id = ofputil_decode_flow_monitor_cancel(oh);
5691 ovs_mutex_lock(&ofproto_mutex);
5692 error = flow_monitor_delete(ofconn, id);
5693 ovs_mutex_unlock(&ofproto_mutex);
5698 /* Meters implementation.
5700 * Meter table entry, indexed by the OpenFlow meter_id.
5701 * 'created' is used to compute the duration for meter stats.
5702 * 'list rules' is needed so that we can delete the dependent rules when the
5703 * meter table entry is deleted.
5704 * 'provider_meter_id' is for the provider's private use.
5707 long long int created; /* Time created. */
5708 struct ovs_list rules; /* List of "struct rule_dpif"s. */
5709 ofproto_meter_id provider_meter_id;
5710 uint16_t flags; /* Meter flags. */
5711 uint16_t n_bands; /* Number of meter bands. */
5712 struct ofputil_meter_band *bands;
5716 * This is used in instruction validation at flow set-up time,
5717 * as flows may not use non-existing meters.
5718 * Return value of UINT32_MAX signifies an invalid meter.
5721 get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
5723 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5724 const struct meter *meter = ofproto->meters[of_meter_id];
5726 return meter->provider_meter_id.uint32;
5732 /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's
5735 meter_insert_rule(struct rule *rule)
5737 const struct rule_actions *a = rule_get_actions(rule);
5738 uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len);
5739 struct meter *meter = rule->ofproto->meters[meter_id];
5741 list_insert(&meter->rules, &rule->meter_list_node);
5745 meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5749 meter->flags = config->flags;
5750 meter->n_bands = config->n_bands;
5751 meter->bands = xmemdup(config->bands,
5752 config->n_bands * sizeof *meter->bands);
5755 static struct meter *
5756 meter_create(const struct ofputil_meter_config *config,
5757 ofproto_meter_id provider_meter_id)
5759 struct meter *meter;
5761 meter = xzalloc(sizeof *meter);
5762 meter->provider_meter_id = provider_meter_id;
5763 meter->created = time_msec();
5764 list_init(&meter->rules);
5766 meter_update(meter, config);
5772 meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
5773 OVS_REQUIRES(ofproto_mutex)
5776 for (mid = first; mid <= last; ++mid) {
5777 struct meter *meter = ofproto->meters[mid];
5779 ofproto->meters[mid] = NULL;
5780 ofproto->ofproto_class->meter_del(ofproto,
5781 meter->provider_meter_id);
5789 handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5791 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5792 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5796 return OFPERR_OFPMMFC_METER_EXISTS;
5799 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5802 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5803 *meterp = meter_create(&mm->meter, provider_meter_id);
5809 handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5811 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5813 uint32_t provider_meter_id;
5816 return OFPERR_OFPMMFC_UNKNOWN_METER;
5819 provider_meter_id = meter->provider_meter_id.uint32;
5820 error = ofproto->ofproto_class->meter_set(ofproto,
5821 &meter->provider_meter_id,
5823 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
5825 meter_update(meter, &mm->meter);
5831 handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm)
5832 OVS_EXCLUDED(ofproto_mutex)
5834 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5835 uint32_t meter_id = mm->meter.meter_id;
5836 struct rule_collection rules;
5837 enum ofperr error = 0;
5838 uint32_t first, last;
5840 if (meter_id == OFPM13_ALL) {
5842 last = ofproto->meter_features.max_meters;
5844 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5847 first = last = meter_id;
5850 /* First delete the rules that use this meter. If any of those rules are
5851 * currently being modified, postpone the whole operation until later. */
5852 rule_collection_init(&rules);
5853 ovs_mutex_lock(&ofproto_mutex);
5854 for (meter_id = first; meter_id <= last; ++meter_id) {
5855 struct meter *meter = ofproto->meters[meter_id];
5856 if (meter && !list_is_empty(&meter->rules)) {
5859 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
5860 rule_collection_add(&rules, rule);
5864 delete_flows__(&rules, OFPRR_METER_DELETE, NULL);
5866 /* Delete the meters. */
5867 meter_delete(ofproto, first, last);
5869 ovs_mutex_unlock(&ofproto_mutex);
5875 handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5877 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5878 struct ofputil_meter_mod mm;
5879 uint64_t bands_stub[256 / 8];
5880 struct ofpbuf bands;
5884 error = reject_slave_controller(ofconn);
5889 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5891 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5893 goto exit_free_bands;
5896 meter_id = mm.meter.meter_id;
5898 if (mm.command != OFPMC13_DELETE) {
5899 /* Fails also when meters are not implemented by the provider. */
5900 if (meter_id == 0 || meter_id > OFPM13_MAX) {
5901 error = OFPERR_OFPMMFC_INVALID_METER;
5902 goto exit_free_bands;
5903 } else if (meter_id > ofproto->meter_features.max_meters) {
5904 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5905 goto exit_free_bands;
5907 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5908 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5909 goto exit_free_bands;
5913 switch (mm.command) {
5915 error = handle_add_meter(ofproto, &mm);
5918 case OFPMC13_MODIFY:
5919 error = handle_modify_meter(ofproto, &mm);
5922 case OFPMC13_DELETE:
5923 error = handle_delete_meter(ofconn, &mm);
5927 error = OFPERR_OFPMMFC_BAD_COMMAND;
5932 struct ofputil_requestforward rf;
5934 rf.reason = OFPRFR_METER_MOD;
5936 connmgr_send_requestforward(ofproto->connmgr, ofconn, &rf);
5940 ofpbuf_uninit(&bands);
5945 handle_meter_features_request(struct ofconn *ofconn,
5946 const struct ofp_header *request)
5948 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5949 struct ofputil_meter_features features;
5952 if (ofproto->ofproto_class->meter_get_features) {
5953 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5955 memset(&features, 0, sizeof features);
5957 b = ofputil_encode_meter_features_reply(&features, request);
5959 ofconn_send_reply(ofconn, b);
5964 handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5967 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5968 struct ovs_list replies;
5969 uint64_t bands_stub[256 / 8];
5970 struct ofpbuf bands;
5971 uint32_t meter_id, first, last;
5973 ofputil_decode_meter_request(request, &meter_id);
5975 if (meter_id == OFPM13_ALL) {
5977 last = ofproto->meter_features.max_meters;
5979 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5980 !ofproto->meters[meter_id]) {
5981 return OFPERR_OFPMMFC_UNKNOWN_METER;
5983 first = last = meter_id;
5986 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5987 ofpmp_init(&replies, request);
5989 for (meter_id = first; meter_id <= last; ++meter_id) {
5990 struct meter *meter = ofproto->meters[meter_id];
5992 continue; /* Skip non-existing meters. */
5994 if (type == OFPTYPE_METER_STATS_REQUEST) {
5995 struct ofputil_meter_stats stats;
5997 stats.meter_id = meter_id;
5999 /* Provider sets the packet and byte counts, we do the rest. */
6000 stats.flow_count = list_size(&meter->rules);
6001 calc_duration(meter->created, time_msec(),
6002 &stats.duration_sec, &stats.duration_nsec);
6003 stats.n_bands = meter->n_bands;
6004 ofpbuf_clear(&bands);
6006 = ofpbuf_put_uninit(&bands,
6007 meter->n_bands * sizeof *stats.bands);
6009 if (!ofproto->ofproto_class->meter_get(ofproto,
6010 meter->provider_meter_id,
6012 ofputil_append_meter_stats(&replies, &stats);
6014 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
6015 struct ofputil_meter_config config;
6017 config.meter_id = meter_id;
6018 config.flags = meter->flags;
6019 config.n_bands = meter->n_bands;
6020 config.bands = meter->bands;
6021 ofputil_append_meter_config(&replies, &config);
6025 ofconn_send_replies(ofconn, &replies);
6026 ofpbuf_uninit(&bands);
6031 ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id,
6032 struct ofgroup **group)
6033 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
6035 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
6036 hash_int(group_id, 0), &ofproto->groups) {
6037 if ((*group)->group_id == group_id) {
6045 /* If the group exists, this function increments the groups's reference count.
6047 * Make sure to call ofproto_group_unref() after no longer needing to maintain
6048 * a reference to the group. */
6050 ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
6051 struct ofgroup **group)
6055 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
6056 found = ofproto_group_lookup__(ofproto, group_id, group);
6058 ofproto_group_ref(*group);
6060 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6065 ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
6066 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
6068 struct ofgroup *grp;
6070 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
6071 hash_int(group_id, 0), &ofproto->groups) {
6072 if (grp->group_id == group_id) {
6080 ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
6081 OVS_EXCLUDED(ofproto->groups_rwlock)
6085 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
6086 exists = ofproto_group_exists__(ofproto, group_id);
6087 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6093 group_get_ref_count(struct ofgroup *group)
6094 OVS_EXCLUDED(ofproto_mutex)
6096 struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto);
6097 struct rule_criteria criteria;
6098 struct rule_collection rules;
6103 match_init_catchall(&match);
6104 rule_criteria_init(&criteria, 0xff, &match, 0, CLS_MAX_VERSION, htonll(0),
6105 htonll(0), OFPP_ANY, group->group_id);
6106 ovs_mutex_lock(&ofproto_mutex);
6107 error = collect_rules_loose(ofproto, &criteria, &rules);
6108 ovs_mutex_unlock(&ofproto_mutex);
6109 rule_criteria_destroy(&criteria);
6111 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
6113 rule_collection_destroy(&rules);
6118 append_group_stats(struct ofgroup *group, struct ovs_list *replies)
6120 struct ofputil_group_stats ogs;
6121 const struct ofproto *ofproto = group->ofproto;
6122 long long int now = time_msec();
6125 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
6127 /* Provider sets the packet and byte counts, we do the rest. */
6128 ogs.ref_count = group_get_ref_count(group);
6129 ogs.n_buckets = group->n_buckets;
6131 error = (ofproto->ofproto_class->group_get_stats
6132 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
6135 ogs.packet_count = UINT64_MAX;
6136 ogs.byte_count = UINT64_MAX;
6137 memset(ogs.bucket_stats, 0xff,
6138 ogs.n_buckets * sizeof *ogs.bucket_stats);
6141 ogs.group_id = group->group_id;
6142 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
6144 ofputil_append_group_stats(replies, &ogs);
6146 free(ogs.bucket_stats);
6150 handle_group_request(struct ofconn *ofconn,
6151 const struct ofp_header *request, uint32_t group_id,
6152 void (*cb)(struct ofgroup *, struct ovs_list *replies))
6154 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6155 struct ofgroup *group;
6156 struct ovs_list replies;
6158 ofpmp_init(&replies, request);
6159 if (group_id == OFPG_ALL) {
6160 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
6161 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
6162 cb(group, &replies);
6164 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6166 if (ofproto_group_lookup(ofproto, group_id, &group)) {
6167 cb(group, &replies);
6168 ofproto_group_unref(group);
6171 ofconn_send_replies(ofconn, &replies);
6175 handle_group_stats_request(struct ofconn *ofconn,
6176 const struct ofp_header *request)
6181 error = ofputil_decode_group_stats_request(request, &group_id);
6186 handle_group_request(ofconn, request, group_id, append_group_stats);
6191 append_group_desc(struct ofgroup *group, struct ovs_list *replies)
6193 struct ofputil_group_desc gds;
6195 gds.group_id = group->group_id;
6196 gds.type = group->type;
6197 gds.props = group->props;
6199 ofputil_append_group_desc_reply(&gds, &group->buckets, replies);
6203 handle_group_desc_stats_request(struct ofconn *ofconn,
6204 const struct ofp_header *request)
6206 handle_group_request(ofconn, request,
6207 ofputil_decode_group_desc_request(request),
6213 handle_group_features_stats_request(struct ofconn *ofconn,
6214 const struct ofp_header *request)
6216 struct ofproto *p = ofconn_get_ofproto(ofconn);
6219 msg = ofputil_encode_group_features_reply(&p->ogf, request);
6221 ofconn_send_reply(ofconn, msg);
6228 put_queue_get_config_reply(struct ofport *port, uint32_t queue,
6229 struct ovs_list *replies)
6231 struct ofputil_queue_config qc;
6233 /* None of the existing queues have compatible properties, so we hard-code
6234 * omitting min_rate and max_rate. */
6235 qc.port = port->ofp_port;
6237 qc.min_rate = UINT16_MAX;
6238 qc.max_rate = UINT16_MAX;
6239 ofputil_append_queue_get_config_reply(&qc, replies);
6243 handle_queue_get_config_request_for_port(struct ofport *port, uint32_t queue,
6244 struct ovs_list *replies)
6246 struct smap details = SMAP_INITIALIZER(&details);
6247 if (queue != OFPQ_ALL) {
6248 int error = netdev_get_queue(port->netdev, queue, &details);
6251 put_queue_get_config_reply(port, queue, replies);
6255 return OFPERR_OFPQOFC_BAD_QUEUE;
6257 return OFPERR_NXQOFC_QUEUE_ERROR;
6260 struct netdev_queue_dump queue_dump;
6263 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump,
6265 put_queue_get_config_reply(port, queue_id, replies);
6268 smap_destroy(&details);
6273 handle_queue_get_config_request(struct ofconn *ofconn,
6274 const struct ofp_header *oh)
6276 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6277 struct ovs_list replies;
6278 struct ofport *port;
6279 ofp_port_t req_port;
6283 error = ofputil_decode_queue_get_config_request(oh, &req_port, &req_queue);
6288 ofputil_start_queue_get_config_reply(oh, &replies);
6289 if (req_port == OFPP_ANY) {
6290 error = OFPERR_OFPQOFC_BAD_QUEUE;
6291 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
6292 if (!handle_queue_get_config_request_for_port(port, req_queue,
6298 port = ofproto_get_port(ofproto, req_port);
6300 ? handle_queue_get_config_request_for_port(port, req_queue,
6302 : OFPERR_OFPQOFC_BAD_PORT);
6305 ofconn_send_replies(ofconn, &replies);
6307 ofpbuf_list_delete(&replies);
6314 init_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm,
6315 struct ofgroup **ofgroup)
6318 const long long int now = time_msec();
6320 if (gm->group_id > OFPG_MAX) {
6321 return OFPERR_OFPGMFC_INVALID_GROUP;
6323 if (gm->type > OFPGT11_FF) {
6324 return OFPERR_OFPGMFC_BAD_TYPE;
6327 *ofgroup = ofproto->ofproto_class->group_alloc();
6329 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
6330 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
6333 (*ofgroup)->ofproto = ofproto;
6334 *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id;
6335 *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type;
6336 *CONST_CAST(long long int *, &((*ofgroup)->created)) = now;
6337 *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now;
6338 ovs_refcount_init(&(*ofgroup)->ref_count);
6340 list_init(&(*ofgroup)->buckets);
6341 ofputil_bucket_clone_list(&(*ofgroup)->buckets, &gm->buckets, NULL);
6343 *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) =
6344 list_size(&(*ofgroup)->buckets);
6346 memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props),
6347 &gm->props, sizeof (struct ofputil_group_props));
6349 /* Construct called BEFORE any locks are held. */
6350 error = ofproto->ofproto_class->group_construct(*ofgroup);
6352 ofputil_bucket_list_destroy(&(*ofgroup)->buckets);
6353 ofproto->ofproto_class->group_dealloc(*ofgroup);
6358 /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to
6359 * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on
6362 add_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm)
6364 struct ofgroup *ofgroup;
6367 /* Allocate new group and initialize it. */
6368 error = init_group(ofproto, gm, &ofgroup);
6373 /* We wrlock as late as possible to minimize the time we jam any other
6374 * threads: No visible state changes before acquiring the lock. */
6375 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6377 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6378 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6382 if (ofproto_group_exists__(ofproto, gm->group_id)) {
6383 error = OFPERR_OFPGMFC_GROUP_EXISTS;
6388 /* Insert new group. */
6389 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
6390 hash_int(ofgroup->group_id, 0));
6391 ofproto->n_groups[ofgroup->type]++;
6393 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6398 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6399 ofproto->ofproto_class->group_destruct(ofgroup);
6400 ofputil_bucket_list_destroy(&ofgroup->buckets);
6401 ofproto->ofproto_class->group_dealloc(ofgroup);
6406 /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets
6407 * already in 'new_ofgroup' will be placed just after the (copy of the) bucket
6408 * in 'ofgroup' with bucket ID 'command_bucket_id'. Special
6409 * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are
6412 copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup,
6413 struct ofgroup *new_ofgroup,
6414 uint32_t command_bucket_id)
6416 struct ofputil_bucket *last = NULL;
6418 if (command_bucket_id <= OFPG15_BUCKET_MAX) {
6419 /* Check here to ensure that a bucket corresponding to
6420 * command_bucket_id exists in the old bucket list.
6422 * The subsequent search of below of new_ofgroup covers
6423 * both buckets in the old bucket list and buckets added
6424 * by the insert buckets group mod message this function processes. */
6425 if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) {
6426 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6429 if (!list_is_empty(&new_ofgroup->buckets)) {
6430 last = ofputil_bucket_list_back(&new_ofgroup->buckets);
6434 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL);
6436 if (ofputil_bucket_check_duplicate_id(&new_ofgroup->buckets)) {
6437 VLOG_INFO_RL(&rl, "Duplicate bucket id");
6438 return OFPERR_OFPGMFC_BUCKET_EXISTS;
6441 /* Rearrange list according to command_bucket_id */
6442 if (command_bucket_id == OFPG15_BUCKET_LAST) {
6443 if (!list_is_empty(&ofgroup->buckets)) {
6444 struct ofputil_bucket *new_first;
6445 const struct ofputil_bucket *first;
6447 first = ofputil_bucket_list_front(&ofgroup->buckets);
6448 new_first = ofputil_bucket_find(&new_ofgroup->buckets,
6451 list_splice(new_ofgroup->buckets.next, &new_first->list_node,
6452 &new_ofgroup->buckets);
6454 } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) {
6455 struct ofputil_bucket *after;
6457 /* Presence of bucket is checked above so after should never be NULL */
6458 after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id);
6460 list_splice(after->list_node.next, new_ofgroup->buckets.next,
6461 last->list_node.next);
6467 /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup'
6468 * with the exception of the bucket whose bucket id is 'command_bucket_id'.
6469 * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST
6470 * and OFPG15_BUCKET_ALL are also honored. */
6472 copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup,
6473 struct ofgroup *new_ofgroup,
6474 uint32_t command_bucket_id)
6476 const struct ofputil_bucket *skip = NULL;
6478 if (command_bucket_id == OFPG15_BUCKET_ALL) {
6482 if (command_bucket_id == OFPG15_BUCKET_FIRST) {
6483 if (!list_is_empty(&ofgroup->buckets)) {
6484 skip = ofputil_bucket_list_front(&ofgroup->buckets);
6486 } else if (command_bucket_id == OFPG15_BUCKET_LAST) {
6487 if (!list_is_empty(&ofgroup->buckets)) {
6488 skip = ofputil_bucket_list_back(&ofgroup->buckets);
6491 skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id);
6493 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6497 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip);
6502 /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and
6503 * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code
6506 * Note that the group is re-created and then replaces the old group in
6507 * ofproto's ofgroup hash map. Thus, the group is never altered while users of
6508 * the xlate module hold a pointer to the group. */
6510 modify_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm)
6512 struct ofgroup *ofgroup, *new_ofgroup, *retiring;
6515 error = init_group(ofproto, gm, &new_ofgroup);
6520 retiring = new_ofgroup;
6522 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6523 if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) {
6524 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
6528 /* Ofproto's group write lock is held now. */
6529 if (ofgroup->type != gm->type
6530 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6531 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
6535 /* Manipulate bucket list for bucket commands */
6536 if (gm->command == OFPGC15_INSERT_BUCKET) {
6537 error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup,
6538 gm->command_bucket_id);
6539 } else if (gm->command == OFPGC15_REMOVE_BUCKET) {
6540 error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup,
6541 gm->command_bucket_id);
6547 /* The group creation time does not change during modification. */
6548 *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created;
6549 *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec();
6551 error = ofproto->ofproto_class->group_modify(new_ofgroup);
6557 /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */
6558 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6559 hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node,
6560 hash_int(new_ofgroup->group_id, 0));
6561 if (ofgroup->type != new_ofgroup->type) {
6562 ofproto->n_groups[ofgroup->type]--;
6563 ofproto->n_groups[new_ofgroup->type]++;
6567 ofproto_group_unref(retiring);
6568 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6573 delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
6574 OVS_RELEASES(ofproto->groups_rwlock)
6577 struct ofproto_flow_mod ofm;
6579 /* Delete all flow entries containing this group in a group action */
6580 match_init_catchall(&match);
6581 flow_mod_init(&ofm.fm, &match, 0, NULL, 0, OFPFC_DELETE);
6582 ofm.fm.delete_reason = OFPRR_GROUP_DELETE;
6583 ofm.fm.out_group = ofgroup->group_id;
6584 ofm.fm.table_id = OFPTT_ALL;
6585 handle_flow_mod__(ofproto, &ofm, NULL);
6587 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6588 /* No-one can find this group any more. */
6589 ofproto->n_groups[ofgroup->type]--;
6590 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6591 ofproto_group_unref(ofgroup);
6594 /* Implements OFPGC11_DELETE. */
6596 delete_group(struct ofproto *ofproto, uint32_t group_id)
6598 struct ofgroup *ofgroup;
6600 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6601 if (group_id == OFPG_ALL) {
6603 struct hmap_node *node = hmap_first(&ofproto->groups);
6607 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
6608 delete_group__(ofproto, ofgroup);
6609 /* Lock for each node separately, so that we will not jam the
6610 * other threads for too long time. */
6611 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6614 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
6615 hash_int(group_id, 0), &ofproto->groups) {
6616 if (ofgroup->group_id == group_id) {
6617 delete_group__(ofproto, ofgroup);
6622 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6625 /* Delete all groups from 'ofproto'.
6627 * This is intended for use within an ofproto provider's 'destruct'
6630 ofproto_group_delete_all(struct ofproto *ofproto)
6632 delete_group(ofproto, OFPG_ALL);
6636 handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6638 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6639 struct ofputil_group_mod gm;
6642 error = reject_slave_controller(ofconn);
6647 error = ofputil_decode_group_mod(oh, &gm);
6652 switch (gm.command) {
6654 error = add_group(ofproto, &gm);
6657 case OFPGC11_MODIFY:
6658 error = modify_group(ofproto, &gm);
6661 case OFPGC11_DELETE:
6662 delete_group(ofproto, gm.group_id);
6666 case OFPGC15_INSERT_BUCKET:
6667 error = modify_group(ofproto, &gm);
6670 case OFPGC15_REMOVE_BUCKET:
6671 error = modify_group(ofproto, &gm);
6675 if (gm.command > OFPGC11_DELETE) {
6676 VLOG_INFO_RL(&rl, "%s: Invalid group_mod command type %d",
6677 ofproto->name, gm.command);
6679 error = OFPERR_OFPGMFC_BAD_COMMAND;
6683 struct ofputil_requestforward rf;
6685 rf.reason = OFPRFR_GROUP_MOD;
6687 connmgr_send_requestforward(ofproto->connmgr, ofconn, &rf);
6689 ofputil_bucket_list_destroy(&gm.buckets);
6694 enum ofputil_table_miss
6695 ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
6697 enum ofputil_table_miss miss;
6699 atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &miss);
6704 table_mod__(struct oftable *oftable,
6705 const struct ofputil_table_mod *tm)
6707 if (tm->miss == OFPUTIL_TABLE_MISS_DEFAULT) {
6708 /* This is how an OFPT_TABLE_MOD decodes if it doesn't specify any
6709 * table-miss configuration (because the protocol used doesn't have
6710 * such a concept), so there's nothing to do. */
6712 atomic_store_relaxed(&oftable->miss_config, tm->miss);
6715 unsigned int new_eviction = oftable->eviction;
6716 if (tm->eviction == OFPUTIL_TABLE_EVICTION_ON) {
6717 new_eviction |= EVICTION_OPENFLOW;
6718 } else if (tm->eviction == OFPUTIL_TABLE_EVICTION_OFF) {
6719 new_eviction &= ~EVICTION_OPENFLOW;
6722 if (new_eviction != oftable->eviction) {
6723 ovs_mutex_lock(&ofproto_mutex);
6724 oftable_configure_eviction(oftable, new_eviction,
6725 oftable->eviction_fields,
6726 oftable->n_eviction_fields);
6727 ovs_mutex_unlock(&ofproto_mutex);
6730 if (tm->vacancy != OFPUTIL_TABLE_VACANCY_DEFAULT) {
6731 ovs_mutex_lock(&ofproto_mutex);
6732 oftable->vacancy_enabled = (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON
6733 ? OFPTC14_VACANCY_EVENTS
6735 oftable->vacancy_down = tm->table_vacancy.vacancy_down;
6736 oftable->vacancy_up = tm->table_vacancy.vacancy_up;
6737 ovs_mutex_unlock(&ofproto_mutex);
6742 table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
6744 if (!check_table_id(ofproto, tm->table_id)) {
6745 return OFPERR_OFPTMFC_BAD_TABLE;
6748 /* Don't allow the eviction flags to be changed (except to the only fixed
6749 * value that OVS supports). OF1.4 says this is normal: "The
6750 * OFPTMPT_EVICTION property usually cannot be modified using a
6751 * OFP_TABLE_MOD request, because the eviction mechanism is switch
6753 if (tm->eviction_flags != UINT32_MAX
6754 && tm->eviction_flags != OFPROTO_EVICTION_FLAGS) {
6755 return OFPERR_OFPTMFC_BAD_CONFIG;
6758 if (tm->table_id == OFPTT_ALL) {
6759 struct oftable *oftable;
6760 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
6761 if (!(oftable->flags & (OFTABLE_HIDDEN | OFTABLE_READONLY))) {
6762 table_mod__(oftable, tm);
6766 struct oftable *oftable = &ofproto->tables[tm->table_id];
6767 if (oftable->flags & OFTABLE_READONLY) {
6768 return OFPERR_OFPTMFC_EPERM;
6770 table_mod__(oftable, tm);
6777 handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6779 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6780 struct ofputil_table_mod tm;
6783 error = reject_slave_controller(ofconn);
6788 error = ofputil_decode_table_mod(oh, &tm);
6793 return table_mod(ofproto, &tm);
6797 ofproto_flow_mod_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
6798 OVS_REQUIRES(ofproto_mutex)
6800 switch (ofm->fm.command) {
6802 return add_flow_start(ofproto, ofm);
6803 /* , &be->old_rules.stub[0],
6804 &be->new_rules.stub[0]); */
6806 return modify_flows_start_loose(ofproto, ofm);
6807 case OFPFC_MODIFY_STRICT:
6808 return modify_flow_start_strict(ofproto, ofm);
6810 return delete_flows_start_loose(ofproto, ofm);
6812 case OFPFC_DELETE_STRICT:
6813 return delete_flow_start_strict(ofproto, ofm);
6816 return OFPERR_OFPFMFC_BAD_COMMAND;
6820 ofproto_flow_mod_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm)
6821 OVS_REQUIRES(ofproto_mutex)
6823 switch (ofm->fm.command) {
6825 add_flow_revert(ofproto, ofm);
6829 case OFPFC_MODIFY_STRICT:
6830 modify_flows_revert(ofproto, ofm);
6834 case OFPFC_DELETE_STRICT:
6835 delete_flows_revert(ofproto, ofm);
6844 ofproto_flow_mod_finish(struct ofproto *ofproto,
6845 struct ofproto_flow_mod *ofm,
6846 const struct flow_mod_requester *req)
6847 OVS_REQUIRES(ofproto_mutex)
6849 switch (ofm->fm.command) {
6851 add_flow_finish(ofproto, ofm, req);
6855 case OFPFC_MODIFY_STRICT:
6856 modify_flows_finish(ofproto, ofm, req);
6860 case OFPFC_DELETE_STRICT:
6861 delete_flows_finish(ofproto, ofm, req);
6869 /* Commit phases (all while locking ofproto_mutex):
6871 * 1. Begin: Gather resources and make changes visible in the next version.
6872 * - Mark affected rules for removal in the next version.
6873 * - Create new replacement rules, make visible in the next
6875 * - Do not send any events or notifications.
6877 * 2. Revert: Fail if any errors are found. After this point no errors are
6878 * possible. No visible changes were made, so rollback is minimal (remove
6879 * added invisible rules, restore visibility of rules marked for removal).
6881 * 3. Finish: Make the changes visible for lookups. Insert replacement rules to
6882 * the ofproto provider. Remove replaced and deleted rules from ofproto data
6883 * structures, and Schedule postponed removal of deleted rules from the
6884 * classifier. Send notifications, buffered packets, etc.
6887 do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags)
6889 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6890 cls_version_t version = ofproto->tables_version + 1;
6891 struct ofp_bundle *bundle;
6892 struct ofp_bundle_entry *be;
6895 bundle = ofconn_get_bundle(ofconn, id);
6898 return OFPERR_OFPBFC_BAD_ID;
6900 if (bundle->flags != flags) {
6901 error = OFPERR_OFPBFC_BAD_FLAGS;
6903 bool prev_is_port_mod = false;
6906 ovs_mutex_lock(&ofproto_mutex);
6909 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6910 if (be->type == OFPTYPE_PORT_MOD) {
6911 /* Our port mods are not atomic. */
6912 if (flags & OFPBF_ATOMIC) {
6913 error = OFPERR_OFPBFC_MSG_FAILED;
6915 prev_is_port_mod = true;
6916 error = port_mod_start(ofconn, &be->opm.pm, &be->opm.port);
6918 } else if (be->type == OFPTYPE_FLOW_MOD) {
6919 /* Flow mods between port mods are applied as a single
6920 * version, but the versions are published only after
6921 * we know the commit is successful. */
6922 if (prev_is_port_mod) {
6925 prev_is_port_mod = false;
6926 /* Store the version in which the changes should take
6928 be->ofm.version = version;
6929 error = ofproto_flow_mod_start(ofproto, &be->ofm);
6939 /* Send error referring to the original message. */
6941 ofconn_send_error(ofconn, be->ofp_msg, error);
6942 error = OFPERR_OFPBFC_MSG_FAILED;
6945 /* 2. Revert. Undo all the changes made above. */
6946 LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) {
6947 if (be->type == OFPTYPE_FLOW_MOD) {
6948 ofproto_flow_mod_revert(ofproto, &be->ofm);
6950 /* Nothing needs to be reverted for a port mod. */
6954 LIST_FOR_EACH (be, node, &bundle->msg_list) {
6955 if (be->type == OFPTYPE_FLOW_MOD) {
6956 struct flow_mod_requester req = { ofconn, be->ofp_msg };
6958 /* Bump the lookup version to the one of the current
6959 * message. This makes all the changes in the bundle at
6960 * this version visible to lookups at once. */
6961 if (ofproto->tables_version < be->ofm.version) {
6962 ofproto->tables_version = be->ofm.version;
6963 ofproto->ofproto_class->set_tables_version(
6964 ofproto, ofproto->tables_version);
6967 ofproto_flow_mod_finish(ofproto, &be->ofm, &req);
6968 } else if (be->type == OFPTYPE_PORT_MOD) {
6969 /* Perform the actual port mod. This is not atomic, i.e.,
6970 * the effects will be immediately seen by upcall
6971 * processing regardless of the lookup version. It should
6972 * be noted that port configuration changes can originate
6973 * also from OVSDB changes asynchronously to all upcall
6975 port_mod_finish(ofconn, &be->opm.pm, be->opm.port);
6980 ofmonitor_flush(ofproto->connmgr);
6981 ovs_mutex_unlock(&ofproto_mutex);
6983 run_rule_executes(ofproto);
6986 /* The bundle is discarded regardless the outcome. */
6987 ofp_bundle_remove__(ofconn, bundle, !error);
6992 handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh)
6994 struct ofputil_bundle_ctrl_msg bctrl;
6995 struct ofputil_bundle_ctrl_msg reply;
6999 error = reject_slave_controller(ofconn);
7004 error = ofputil_decode_bundle_ctrl(oh, &bctrl);
7009 reply.bundle_id = bctrl.bundle_id;
7011 switch (bctrl.type) {
7012 case OFPBCT_OPEN_REQUEST:
7013 error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags);
7014 reply.type = OFPBCT_OPEN_REPLY;
7016 case OFPBCT_CLOSE_REQUEST:
7017 error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags);
7018 reply.type = OFPBCT_CLOSE_REPLY;
7020 case OFPBCT_COMMIT_REQUEST:
7021 error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags);
7022 reply.type = OFPBCT_COMMIT_REPLY;
7024 case OFPBCT_DISCARD_REQUEST:
7025 error = ofp_bundle_discard(ofconn, bctrl.bundle_id);
7026 reply.type = OFPBCT_DISCARD_REPLY;
7029 case OFPBCT_OPEN_REPLY:
7030 case OFPBCT_CLOSE_REPLY:
7031 case OFPBCT_COMMIT_REPLY:
7032 case OFPBCT_DISCARD_REPLY:
7033 return OFPERR_OFPBFC_BAD_TYPE;
7038 buf = ofputil_encode_bundle_ctrl_reply(oh, &reply);
7039 ofconn_send_reply(ofconn, buf);
7045 handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh)
7047 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
7049 struct ofputil_bundle_add_msg badd;
7050 struct ofp_bundle_entry *bmsg;
7053 error = reject_slave_controller(ofconn);
7058 error = ofputil_decode_bundle_add(oh, &badd, &type);
7063 bmsg = ofp_bundle_entry_alloc(type, badd.msg);
7065 if (type == OFPTYPE_PORT_MOD) {
7066 error = ofputil_decode_port_mod(badd.msg, &bmsg->opm.pm, false);
7067 } else if (type == OFPTYPE_FLOW_MOD) {
7068 struct ofpbuf ofpacts;
7069 uint64_t ofpacts_stub[1024 / 8];
7071 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
7072 error = ofputil_decode_flow_mod(&bmsg->ofm.fm, badd.msg,
7073 ofconn_get_protocol(ofconn),
7075 u16_to_ofp(ofproto->max_ports),
7077 /* Move actions to heap. */
7078 bmsg->ofm.fm.ofpacts = ofpbuf_steal_data(&ofpacts);
7080 if (!error && bmsg->ofm.fm.ofpacts_len) {
7081 error = ofproto_check_ofpacts(ofproto, bmsg->ofm.fm.ofpacts,
7082 bmsg->ofm.fm.ofpacts_len);
7089 error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags,
7094 ofp_bundle_entry_free(bmsg);
7101 handle_tlv_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
7103 struct ofputil_tlv_table_mod ttm;
7106 error = reject_slave_controller(ofconn);
7111 error = ofputil_decode_tlv_table_mod(oh, &ttm);
7116 error = tun_metadata_table_mod(&ttm);
7118 ofputil_uninit_tlv_table(&ttm.mappings);
7123 handle_tlv_table_request(struct ofconn *ofconn, const struct ofp_header *oh)
7125 struct ofputil_tlv_table_reply ttr;
7128 tun_metadata_table_request(&ttr);
7129 b = ofputil_encode_tlv_table_reply(oh, &ttr);
7130 ofputil_uninit_tlv_table(&ttr.mappings);
7132 ofconn_send_reply(ofconn, b);
7137 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
7138 OVS_EXCLUDED(ofproto_mutex)
7140 const struct ofp_header *oh = msg->data;
7144 error = ofptype_decode(&type, oh);
7148 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
7149 && ofpmp_more(oh)) {
7150 /* We have no buffer implementation for multipart requests.
7151 * Report overflow for requests which consists of multiple
7153 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
7157 /* OpenFlow requests. */
7158 case OFPTYPE_ECHO_REQUEST:
7159 return handle_echo_request(ofconn, oh);
7161 case OFPTYPE_FEATURES_REQUEST:
7162 return handle_features_request(ofconn, oh);
7164 case OFPTYPE_GET_CONFIG_REQUEST:
7165 return handle_get_config_request(ofconn, oh);
7167 case OFPTYPE_SET_CONFIG:
7168 return handle_set_config(ofconn, oh);
7170 case OFPTYPE_PACKET_OUT:
7171 return handle_packet_out(ofconn, oh);
7173 case OFPTYPE_PORT_MOD:
7174 return handle_port_mod(ofconn, oh);
7176 case OFPTYPE_FLOW_MOD:
7177 return handle_flow_mod(ofconn, oh);
7179 case OFPTYPE_GROUP_MOD:
7180 return handle_group_mod(ofconn, oh);
7182 case OFPTYPE_TABLE_MOD:
7183 return handle_table_mod(ofconn, oh);
7185 case OFPTYPE_METER_MOD:
7186 return handle_meter_mod(ofconn, oh);
7188 case OFPTYPE_BARRIER_REQUEST:
7189 return handle_barrier_request(ofconn, oh);
7191 case OFPTYPE_ROLE_REQUEST:
7192 return handle_role_request(ofconn, oh);
7194 /* OpenFlow replies. */
7195 case OFPTYPE_ECHO_REPLY:
7198 /* Nicira extension requests. */
7199 case OFPTYPE_FLOW_MOD_TABLE_ID:
7200 return handle_nxt_flow_mod_table_id(ofconn, oh);
7202 case OFPTYPE_SET_FLOW_FORMAT:
7203 return handle_nxt_set_flow_format(ofconn, oh);
7205 case OFPTYPE_SET_PACKET_IN_FORMAT:
7206 return handle_nxt_set_packet_in_format(ofconn, oh);
7208 case OFPTYPE_SET_CONTROLLER_ID:
7209 return handle_nxt_set_controller_id(ofconn, oh);
7211 case OFPTYPE_FLOW_AGE:
7212 /* Nothing to do. */
7215 case OFPTYPE_FLOW_MONITOR_CANCEL:
7216 return handle_flow_monitor_cancel(ofconn, oh);
7218 case OFPTYPE_SET_ASYNC_CONFIG:
7219 return handle_nxt_set_async_config(ofconn, oh);
7221 case OFPTYPE_GET_ASYNC_REQUEST:
7222 return handle_nxt_get_async_request(ofconn, oh);
7224 /* Statistics requests. */
7225 case OFPTYPE_DESC_STATS_REQUEST:
7226 return handle_desc_stats_request(ofconn, oh);
7228 case OFPTYPE_FLOW_STATS_REQUEST:
7229 return handle_flow_stats_request(ofconn, oh);
7231 case OFPTYPE_AGGREGATE_STATS_REQUEST:
7232 return handle_aggregate_stats_request(ofconn, oh);
7234 case OFPTYPE_TABLE_STATS_REQUEST:
7235 return handle_table_stats_request(ofconn, oh);
7237 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
7238 return handle_table_features_request(ofconn, oh);
7240 case OFPTYPE_TABLE_DESC_REQUEST:
7241 return handle_table_desc_request(ofconn, oh);
7243 case OFPTYPE_PORT_STATS_REQUEST:
7244 return handle_port_stats_request(ofconn, oh);
7246 case OFPTYPE_QUEUE_STATS_REQUEST:
7247 return handle_queue_stats_request(ofconn, oh);
7249 case OFPTYPE_PORT_DESC_STATS_REQUEST:
7250 return handle_port_desc_stats_request(ofconn, oh);
7252 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
7253 return handle_flow_monitor_request(ofconn, oh);
7255 case OFPTYPE_METER_STATS_REQUEST:
7256 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
7257 return handle_meter_request(ofconn, oh, type);
7259 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
7260 return handle_meter_features_request(ofconn, oh);
7262 case OFPTYPE_GROUP_STATS_REQUEST:
7263 return handle_group_stats_request(ofconn, oh);
7265 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
7266 return handle_group_desc_stats_request(ofconn, oh);
7268 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
7269 return handle_group_features_stats_request(ofconn, oh);
7271 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
7272 return handle_queue_get_config_request(ofconn, oh);
7274 case OFPTYPE_BUNDLE_CONTROL:
7275 return handle_bundle_control(ofconn, oh);
7277 case OFPTYPE_BUNDLE_ADD_MESSAGE:
7278 return handle_bundle_add(ofconn, oh);
7280 case OFPTYPE_NXT_TLV_TABLE_MOD:
7281 return handle_tlv_table_mod(ofconn, oh);
7283 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
7284 return handle_tlv_table_request(ofconn, oh);
7288 case OFPTYPE_FEATURES_REPLY:
7289 case OFPTYPE_GET_CONFIG_REPLY:
7290 case OFPTYPE_PACKET_IN:
7291 case OFPTYPE_FLOW_REMOVED:
7292 case OFPTYPE_PORT_STATUS:
7293 case OFPTYPE_BARRIER_REPLY:
7294 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
7295 case OFPTYPE_DESC_STATS_REPLY:
7296 case OFPTYPE_FLOW_STATS_REPLY:
7297 case OFPTYPE_QUEUE_STATS_REPLY:
7298 case OFPTYPE_PORT_STATS_REPLY:
7299 case OFPTYPE_TABLE_STATS_REPLY:
7300 case OFPTYPE_AGGREGATE_STATS_REPLY:
7301 case OFPTYPE_PORT_DESC_STATS_REPLY:
7302 case OFPTYPE_ROLE_REPLY:
7303 case OFPTYPE_FLOW_MONITOR_PAUSED:
7304 case OFPTYPE_FLOW_MONITOR_RESUMED:
7305 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
7306 case OFPTYPE_GET_ASYNC_REPLY:
7307 case OFPTYPE_GROUP_STATS_REPLY:
7308 case OFPTYPE_GROUP_DESC_STATS_REPLY:
7309 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
7310 case OFPTYPE_METER_STATS_REPLY:
7311 case OFPTYPE_METER_CONFIG_STATS_REPLY:
7312 case OFPTYPE_METER_FEATURES_STATS_REPLY:
7313 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
7314 case OFPTYPE_TABLE_DESC_REPLY:
7315 case OFPTYPE_ROLE_STATUS:
7316 case OFPTYPE_REQUESTFORWARD:
7317 case OFPTYPE_NXT_TLV_TABLE_REPLY:
7319 if (ofpmsg_is_stat_request(oh)) {
7320 return OFPERR_OFPBRC_BAD_STAT;
7322 return OFPERR_OFPBRC_BAD_TYPE;
7328 handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
7329 OVS_EXCLUDED(ofproto_mutex)
7331 enum ofperr error = handle_openflow__(ofconn, ofp_msg);
7334 ofconn_send_error(ofconn, ofp_msg->data, error);
7336 COVERAGE_INC(ofproto_recv_openflow);
7339 /* Asynchronous operations. */
7342 send_buffered_packet(const struct flow_mod_requester *req, uint32_t buffer_id,
7344 OVS_REQUIRES(ofproto_mutex)
7346 if (req && req->ofconn && buffer_id != UINT32_MAX) {
7347 struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn);
7348 struct dp_packet *packet;
7352 error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet,
7355 struct rule_execute *re;
7357 ofproto_rule_ref(rule);
7359 re = xmalloc(sizeof *re);
7361 re->in_port = in_port;
7362 re->packet = packet;
7364 if (!guarded_list_push_back(&ofproto->rule_executes,
7365 &re->list_node, 1024)) {
7366 ofproto_rule_unref(rule);
7367 dp_packet_delete(re->packet);
7371 ofconn_send_error(req->ofconn, req->request, error);
7377 pick_datapath_id(const struct ofproto *ofproto)
7379 const struct ofport *port;
7381 port = ofproto_get_port(ofproto, OFPP_LOCAL);
7386 error = netdev_get_etheraddr(port->netdev, &ea);
7388 return eth_addr_to_uint64(ea);
7390 VLOG_WARN("%s: could not get MAC address for %s (%s)",
7391 ofproto->name, netdev_get_name(port->netdev),
7392 ovs_strerror(error));
7394 return ofproto->fallback_dpid;
7398 pick_fallback_dpid(void)
7401 eth_addr_nicira_random(&ea);
7402 return eth_addr_to_uint64(ea);
7405 /* Table overflow policy. */
7407 /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
7408 * to NULL if the table is not configured to evict rules or if the table
7409 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
7410 * or with no timeouts are not evictable.) */
7412 choose_rule_to_evict(struct oftable *table, struct rule **rulep)
7413 OVS_REQUIRES(ofproto_mutex)
7415 struct eviction_group *evg;
7418 if (!table->eviction) {
7422 /* In the common case, the outer and inner loops here will each be entered
7425 * - The inner loop normally "return"s in its first iteration. If the
7426 * eviction group has any evictable rules, then it always returns in
7429 * - The outer loop only iterates more than once if the largest eviction
7430 * group has no evictable rules.
7432 * - The outer loop can exit only if table's 'max_flows' is all filled up
7433 * by unevictable rules. */
7434 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
7437 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
7446 /* Eviction groups. */
7448 /* Returns the priority to use for an eviction_group that contains 'n_rules'
7449 * rules. The priority contains low-order random bits to ensure that eviction
7450 * groups with the same number of rules are prioritized randomly. */
7452 eviction_group_priority(size_t n_rules)
7454 uint16_t size = MIN(UINT16_MAX, n_rules);
7455 return (size << 16) | random_uint16();
7458 /* Updates 'evg', an eviction_group within 'table', following a change that
7459 * adds or removes rules in 'evg'. */
7461 eviction_group_resized(struct oftable *table, struct eviction_group *evg)
7462 OVS_REQUIRES(ofproto_mutex)
7464 heap_change(&table->eviction_groups_by_size, &evg->size_node,
7465 eviction_group_priority(heap_count(&evg->rules)));
7468 /* Destroys 'evg', an eviction_group within 'table':
7470 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
7471 * rules themselves, just removes them from the eviction group.)
7473 * - Removes 'evg' from 'table'.
7477 eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
7478 OVS_REQUIRES(ofproto_mutex)
7480 while (!heap_is_empty(&evg->rules)) {
7483 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
7484 rule->eviction_group = NULL;
7486 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
7487 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
7488 heap_destroy(&evg->rules);
7492 /* Removes 'rule' from its eviction group, if any. */
7494 eviction_group_remove_rule(struct rule *rule)
7495 OVS_REQUIRES(ofproto_mutex)
7497 if (rule->eviction_group) {
7498 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7499 struct eviction_group *evg = rule->eviction_group;
7501 rule->eviction_group = NULL;
7502 heap_remove(&evg->rules, &rule->evg_node);
7503 if (heap_is_empty(&evg->rules)) {
7504 eviction_group_destroy(table, evg);
7506 eviction_group_resized(table, evg);
7511 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
7512 * returns the hash value. */
7514 eviction_group_hash_rule(struct rule *rule)
7515 OVS_REQUIRES(ofproto_mutex)
7517 struct oftable *table = &rule->ofproto->tables[rule->table_id];
7518 const struct mf_subfield *sf;
7522 hash = table->eviction_group_id_basis;
7523 miniflow_expand(rule->cr.match.flow, &flow);
7524 for (sf = table->eviction_fields;
7525 sf < &table->eviction_fields[table->n_eviction_fields];
7528 if (mf_are_prereqs_ok(sf->field, &flow)) {
7529 union mf_value value;
7531 mf_get_value(sf->field, &flow, &value);
7533 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
7535 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
7536 unsigned int start = sf->ofs + sf->n_bits;
7537 bitwise_zero(&value, sf->field->n_bytes, start,
7538 sf->field->n_bytes * 8 - start);
7540 hash = hash_bytes(&value, sf->field->n_bytes, hash);
7542 hash = hash_int(hash, 0);
7549 /* Returns an eviction group within 'table' with the given 'id', creating one
7551 static struct eviction_group *
7552 eviction_group_find(struct oftable *table, uint32_t id)
7553 OVS_REQUIRES(ofproto_mutex)
7555 struct eviction_group *evg;
7557 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
7561 evg = xmalloc(sizeof *evg);
7562 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
7563 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
7564 eviction_group_priority(0));
7565 heap_init(&evg->rules);
7570 /* Returns an eviction priority for 'rule'. The return value should be
7571 * interpreted so that higher priorities make a rule a more attractive
7572 * candidate for eviction. */
7574 rule_eviction_priority(struct ofproto *ofproto, struct rule *rule)
7575 OVS_REQUIRES(ofproto_mutex)
7577 /* Calculate absolute time when this flow will expire. If it will never
7578 * expire, then return 0 to make it unevictable. */
7579 long long int expiration = LLONG_MAX;
7580 if (rule->hard_timeout) {
7581 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
7582 ovs_mutex_lock(&rule->mutex);
7583 long long int modified = rule->modified;
7584 ovs_mutex_unlock(&rule->mutex);
7586 expiration = modified + rule->hard_timeout * 1000;
7588 if (rule->idle_timeout) {
7589 uint64_t packets, bytes;
7591 long long int idle_expiration;
7593 ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used);
7594 idle_expiration = used + rule->idle_timeout * 1000;
7595 expiration = MIN(expiration, idle_expiration);
7597 if (expiration == LLONG_MAX) {
7601 /* Calculate the time of expiration as a number of (approximate) seconds
7602 * after program startup.
7604 * This should work OK for program runs that last UINT32_MAX seconds or
7605 * less. Therefore, please restart OVS at least once every 136 years. */
7606 uint32_t expiration_ofs = (expiration >> 10) - (time_boot_msec() >> 10);
7608 /* Combine expiration time with OpenFlow "importance" to form a single
7609 * priority value. We want flows with relatively low "importance" to be
7610 * evicted before even considering expiration time, so put "importance" in
7611 * the most significant bits and expiration time in the least significant
7614 * Small 'priority' should be evicted before those with large 'priority'.
7615 * The caller expects the opposite convention (a large return value being
7616 * more attractive for eviction) so we invert it before returning. */
7617 uint64_t priority = ((uint64_t) rule->importance << 32) + expiration_ofs;
7618 return UINT64_MAX - priority;
7621 /* Adds 'rule' to an appropriate eviction group for its oftable's
7622 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
7623 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
7626 * The caller must ensure that 'rule' is not already in an eviction group. */
7628 eviction_group_add_rule(struct rule *rule)
7629 OVS_REQUIRES(ofproto_mutex)
7631 struct ofproto *ofproto = rule->ofproto;
7632 struct oftable *table = &ofproto->tables[rule->table_id];
7635 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
7636 * so no additional protection is needed. */
7637 has_timeout = rule->hard_timeout || rule->idle_timeout;
7639 if (table->eviction && has_timeout) {
7640 struct eviction_group *evg;
7642 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
7644 rule->eviction_group = evg;
7645 heap_insert(&evg->rules, &rule->evg_node,
7646 rule_eviction_priority(ofproto, rule));
7647 eviction_group_resized(table, evg);
7653 /* Initializes 'table'. */
7655 oftable_init(struct oftable *table)
7657 memset(table, 0, sizeof *table);
7658 classifier_init(&table->cls, flow_segment_u64s);
7659 table->max_flows = UINT_MAX;
7661 hmap_init(&table->eviction_groups_by_id);
7662 heap_init(&table->eviction_groups_by_size);
7663 atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
7665 classifier_set_prefix_fields(&table->cls, default_prefix_fields,
7666 ARRAY_SIZE(default_prefix_fields));
7668 atomic_init(&table->n_matched, 0);
7669 atomic_init(&table->n_missed, 0);
7672 /* Destroys 'table', including its classifier and eviction groups.
7674 * The caller is responsible for freeing 'table' itself. */
7676 oftable_destroy(struct oftable *table)
7678 ovs_assert(classifier_is_empty(&table->cls));
7680 ovs_mutex_lock(&ofproto_mutex);
7681 oftable_configure_eviction(table, 0, NULL, 0);
7682 ovs_mutex_unlock(&ofproto_mutex);
7684 hmap_destroy(&table->eviction_groups_by_id);
7685 heap_destroy(&table->eviction_groups_by_size);
7686 classifier_destroy(&table->cls);
7690 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
7691 * string, then 'table' will use its default name.
7693 * This only affects the name exposed for a table exposed through the OpenFlow
7694 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
7696 oftable_set_name(struct oftable *table, const char *name)
7698 if (name && name[0]) {
7699 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
7700 if (!table->name || strncmp(name, table->name, len)) {
7702 table->name = xmemdup0(name, len);
7710 /* oftables support a choice of two policies when adding a rule would cause the
7711 * number of flows in the table to exceed the configured maximum number: either
7712 * they can refuse to add the new flow or they can evict some existing flow.
7713 * This function configures the latter policy on 'table', with fairness based
7714 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
7715 * 'n_fields' as 0 disables fairness.) */
7717 oftable_configure_eviction(struct oftable *table, unsigned int eviction,
7718 const struct mf_subfield *fields, size_t n_fields)
7719 OVS_REQUIRES(ofproto_mutex)
7723 if ((table->eviction != 0) == (eviction != 0)
7724 && n_fields == table->n_eviction_fields
7726 || !memcmp(fields, table->eviction_fields,
7727 n_fields * sizeof *fields))) {
7728 /* The set of eviction fields did not change. If 'eviction' changed,
7729 * it remains nonzero, so that we can just update table->eviction
7730 * without fussing with the eviction groups. */
7731 table->eviction = eviction;
7735 /* Destroy existing eviction groups, then destroy and recreate data
7736 * structures to recover memory. */
7737 struct eviction_group *evg, *next;
7738 HMAP_FOR_EACH_SAFE (evg, next, id_node, &table->eviction_groups_by_id) {
7739 eviction_group_destroy(table, evg);
7741 hmap_destroy(&table->eviction_groups_by_id);
7742 hmap_init(&table->eviction_groups_by_id);
7743 heap_destroy(&table->eviction_groups_by_size);
7744 heap_init(&table->eviction_groups_by_size);
7746 /* Replace eviction groups by the new ones, if there is a change. Free the
7747 * old fields only after allocating the new ones, because 'fields ==
7748 * table->eviction_fields' is possible. */
7749 struct mf_subfield *old_fields = table->eviction_fields;
7750 table->n_eviction_fields = n_fields;
7751 table->eviction_fields = (fields
7752 ? xmemdup(fields, n_fields * sizeof *fields)
7756 /* Add the new eviction groups, if enabled. */
7757 table->eviction = eviction;
7758 if (table->eviction) {
7759 table->eviction_group_id_basis = random_uint32();
7760 CLS_FOR_EACH (rule, cr, &table->cls) {
7761 eviction_group_add_rule(rule);
7766 /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted
7767 * it to the classifier. */
7769 ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule)
7770 OVS_REQUIRES(ofproto_mutex)
7772 const struct rule_actions *actions = rule_get_actions(rule);
7774 ovs_assert(rule->removed);
7776 if (rule->hard_timeout || rule->idle_timeout) {
7777 list_insert(&ofproto->expirable, &rule->expirable);
7779 cookies_insert(ofproto, rule);
7780 eviction_group_add_rule(rule);
7781 if (actions->has_meter) {
7782 meter_insert_rule(rule);
7784 rule->removed = false;
7787 /* Removes 'rule' from the ofproto data structures. Caller may have deferred
7788 * the removal from the classifier. */
7790 ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule)
7791 OVS_REQUIRES(ofproto_mutex)
7793 ovs_assert(!rule->removed);
7795 cookies_remove(ofproto, rule);
7797 eviction_group_remove_rule(rule);
7798 if (!list_is_empty(&rule->expirable)) {
7799 list_remove(&rule->expirable);
7801 if (!list_is_empty(&rule->meter_list_node)) {
7802 list_remove(&rule->meter_list_node);
7803 list_init(&rule->meter_list_node);
7806 rule->removed = true;
7809 /* unixctl commands. */
7812 ofproto_lookup(const char *name)
7814 struct ofproto *ofproto;
7816 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
7818 if (!strcmp(ofproto->name, name)) {
7826 ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
7827 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7829 struct ofproto *ofproto;
7833 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
7834 ds_put_format(&results, "%s\n", ofproto->name);
7836 unixctl_command_reply(conn, ds_cstr(&results));
7837 ds_destroy(&results);
7841 ofproto_unixctl_init(void)
7843 static bool registered;
7849 unixctl_command_register("ofproto/list", "", 0, 0,
7850 ofproto_unixctl_list, NULL);
7853 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
7855 * This is deprecated. It is only for compatibility with broken device drivers
7856 * in old versions of Linux that do not properly support VLANs when VLAN
7857 * devices are not used. When broken device drivers are no longer in
7858 * widespread use, we will delete these interfaces. */
7860 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
7861 * (exactly) by an OpenFlow rule in 'ofproto'. */
7863 ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
7866 struct cls_rule target;
7867 const struct oftable *oftable;
7869 match_init_catchall(&match);
7870 match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI));
7871 cls_rule_init(&target, &match, 0);
7873 free(ofproto->vlan_bitmap);
7874 ofproto->vlan_bitmap = bitmap_allocate(4096);
7875 ofproto->vlans_changed = false;
7877 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
7880 CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target,
7882 if (minimask_get_vid_mask(rule->cr.match.mask) == VLAN_VID_MASK) {
7883 uint16_t vid = miniflow_get_vid(rule->cr.match.flow);
7885 bitmap_set1(vlan_bitmap, vid);
7886 bitmap_set1(ofproto->vlan_bitmap, vid);
7891 cls_rule_destroy(&target);
7894 /* Returns true if new VLANs have come into use by the flow table since the
7895 * last call to ofproto_get_vlan_usage().
7897 * We don't track when old VLANs stop being used. */
7899 ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
7901 return ofproto->vlans_changed;
7904 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
7905 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
7906 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
7907 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
7908 * then the VLAN device is un-enslaved. */
7910 ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
7911 ofp_port_t realdev_ofp_port, int vid)
7913 struct ofport *ofport;
7916 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
7918 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
7920 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
7921 ofproto->name, vlandev_ofp_port);
7925 if (!ofproto->ofproto_class->set_realdev) {
7926 if (!vlandev_ofp_port) {
7929 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
7933 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
7935 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
7936 ofproto->name, vlandev_ofp_port,
7937 netdev_get_name(ofport->netdev), ovs_strerror(error));