2 * Copyright (c) 2009, 2010, 2011 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofproto/ofproto-provider.h"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "multipath.h"
44 #include "ofp-print.h"
45 #include "ofproto-dpif-sflow.h"
46 #include "poll-loop.h"
48 #include "unaligned.h"
50 #include "vlan-bitmap.h"
53 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
55 COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
56 COVERAGE_DEFINE(ofproto_dpif_expired);
57 COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
58 COVERAGE_DEFINE(ofproto_dpif_xlate);
59 COVERAGE_DEFINE(facet_changed_rule);
60 COVERAGE_DEFINE(facet_invalidated);
61 COVERAGE_DEFINE(facet_revalidate);
62 COVERAGE_DEFINE(facet_unexpected);
64 /* Maximum depth of flow table recursion (due to resubmit actions) in a
65 * flow translation. */
66 #define MAX_RESUBMIT_RECURSION 16
68 /* Number of implemented OpenFlow tables. */
69 enum { N_TABLES = 255 };
70 BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
78 long long int used; /* Time last used; time created if not used. */
82 * - Do include packets and bytes from facets that have been deleted or
83 * whose own statistics have been folded into the rule.
85 * - Do include packets and bytes sent "by hand" that were accounted to
86 * the rule without any facet being involved (this is a rare corner
87 * case in rule_execute()).
89 * - Do not include packet or bytes that can be obtained from any facet's
90 * packet_count or byte_count member or that can be obtained from the
91 * datapath by, e.g., dpif_flow_get() for any facet.
93 uint64_t packet_count; /* Number of packets received. */
94 uint64_t byte_count; /* Number of bytes received. */
96 tag_type tag; /* Caches rule_calculate_tag() result. */
98 struct list facets; /* List of "struct facet"s. */
101 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
103 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
106 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
107 const struct flow *, uint8_t table);
109 #define MAX_MIRRORS 32
110 typedef uint32_t mirror_mask_t;
111 #define MIRROR_MASK_C(X) UINT32_C(X)
112 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
114 struct ofproto_dpif *ofproto; /* Owning ofproto. */
115 size_t idx; /* In ofproto's "mirrors" array. */
116 void *aux; /* Key supplied by ofproto's client. */
117 char *name; /* Identifier for log messages. */
119 /* Selection criteria. */
120 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
121 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
122 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
124 /* Output (mutually exclusive). */
125 struct ofbundle *out; /* Output port or NULL. */
126 int out_vlan; /* Output VLAN or -1. */
129 static void mirror_destroy(struct ofmirror *);
131 /* A group of one or more OpenFlow ports. */
132 #define OFBUNDLE_FLOOD ((struct ofbundle *) 1)
134 struct ofproto_dpif *ofproto; /* Owning ofproto. */
135 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
136 void *aux; /* Key supplied by ofproto's client. */
137 char *name; /* Identifier for log messages. */
140 struct list ports; /* Contains "struct ofport"s. */
141 enum port_vlan_mode vlan_mode; /* VLAN mode */
142 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
143 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
144 * NULL if all VLANs are trunked. */
145 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
146 struct bond *bond; /* Nonnull iff more than one port. */
149 bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */
151 /* Port mirroring info. */
152 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
153 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
154 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
157 static void bundle_remove(struct ofport *);
158 static void bundle_destroy(struct ofbundle *);
159 static void bundle_del_port(struct ofport_dpif *);
160 static void bundle_run(struct ofbundle *);
161 static void bundle_wait(struct ofbundle *);
163 struct action_xlate_ctx {
164 /* action_xlate_ctx_init() initializes these members. */
167 struct ofproto_dpif *ofproto;
169 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
170 * this flow when actions change header fields. */
173 /* The packet corresponding to 'flow', or a null pointer if we are
174 * revalidating without a packet to refer to. */
175 const struct ofpbuf *packet;
177 /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We
178 * want to execute them if we are actually processing a packet, or if we
179 * are accounting for packets that the datapath has processed, but not if
180 * we are just revalidating. */
183 /* If nonnull, called just before executing a resubmit action.
185 * This is normally null so the client has to set it manually after
186 * calling action_xlate_ctx_init(). */
187 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
189 /* xlate_actions() initializes and uses these members. The client might want
190 * to look at them after it returns. */
192 struct ofpbuf *odp_actions; /* Datapath actions. */
193 tag_type tags; /* Tags associated with actions. */
194 bool may_set_up_flow; /* True ordinarily; false if the actions must
195 * be reassessed for every packet. */
196 bool has_learn; /* Actions include NXAST_LEARN? */
197 bool has_normal; /* Actions output to OFPP_NORMAL? */
198 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
200 /* xlate_actions() initializes and uses these members, but the client has no
201 * reason to look at them. */
203 int recurse; /* Recursion level, via xlate_table_action. */
204 uint32_t priority; /* Current flow priority. 0 if none. */
205 struct flow base_flow; /* Flow at the last commit. */
206 uint32_t base_priority; /* Priority at the last commit. */
207 uint8_t table_id; /* OpenFlow table ID where flow was found. */
208 uint32_t sflow_n_outputs; /* Number of output ports. */
209 uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
210 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
213 static void action_xlate_ctx_init(struct action_xlate_ctx *,
214 struct ofproto_dpif *, const struct flow *,
215 const struct ofpbuf *);
216 static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
217 const union ofp_action *in, size_t n_in);
219 /* An exact-match instantiation of an OpenFlow flow. */
221 long long int used; /* Time last used; time created if not used. */
225 * - Do include packets and bytes sent "by hand", e.g. with
228 * - Do include packets and bytes that were obtained from the datapath
229 * when its statistics were reset (e.g. dpif_flow_put() with
230 * DPIF_FP_ZERO_STATS).
232 uint64_t packet_count; /* Number of packets received. */
233 uint64_t byte_count; /* Number of bytes received. */
235 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
236 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
238 uint64_t rs_packet_count; /* Packets pushed to resubmit children. */
239 uint64_t rs_byte_count; /* Bytes pushed to resubmit children. */
240 long long int rs_used; /* Used time pushed to resubmit children. */
242 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
244 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
245 struct list list_node; /* In owning rule's 'facets' list. */
246 struct rule_dpif *rule; /* Owning rule. */
247 struct flow flow; /* Exact-match flow. */
248 bool installed; /* Installed in datapath? */
249 bool may_install; /* True ordinarily; false if actions must
250 * be reassessed for every packet. */
251 bool has_learn; /* Actions include NXAST_LEARN? */
252 bool has_normal; /* Actions output to OFPP_NORMAL? */
253 size_t actions_len; /* Number of bytes in actions[]. */
254 struct nlattr *actions; /* Datapath actions. */
255 tag_type tags; /* Tags. */
256 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
259 static struct facet *facet_create(struct rule_dpif *, const struct flow *,
260 const struct ofpbuf *packet);
261 static void facet_remove(struct ofproto_dpif *, struct facet *);
262 static void facet_free(struct facet *);
264 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
265 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
266 const struct flow *);
267 static bool facet_revalidate(struct ofproto_dpif *, struct facet *);
269 static void facet_execute(struct ofproto_dpif *, struct facet *,
270 struct ofpbuf *packet);
272 static int facet_put__(struct ofproto_dpif *, struct facet *,
273 const struct nlattr *actions, size_t actions_len,
274 struct dpif_flow_stats *);
275 static void facet_install(struct ofproto_dpif *, struct facet *,
277 static void facet_uninstall(struct ofproto_dpif *, struct facet *);
278 static void facet_flush_stats(struct ofproto_dpif *, struct facet *);
280 static void facet_make_actions(struct ofproto_dpif *, struct facet *,
281 const struct ofpbuf *packet);
282 static void facet_update_time(struct ofproto_dpif *, struct facet *,
284 static void facet_update_stats(struct ofproto_dpif *, struct facet *,
285 const struct dpif_flow_stats *);
286 static void facet_reset_counters(struct facet *);
287 static void facet_reset_dp_stats(struct facet *, struct dpif_flow_stats *);
288 static void facet_push_stats(struct facet *);
289 static void facet_account(struct ofproto_dpif *, struct facet *);
291 static bool facet_is_controller_flow(struct facet *);
293 static void flow_push_stats(const struct rule_dpif *,
294 struct flow *, uint64_t packets, uint64_t bytes,
297 static uint32_t rule_calculate_tag(const struct flow *,
298 const struct flow_wildcards *,
300 static void rule_invalidate(const struct rule_dpif *);
306 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
307 struct list bundle_node; /* In struct ofbundle's "ports" list. */
308 struct cfm *cfm; /* Connectivity Fault Management, if any. */
309 tag_type tag; /* Tag associated with this port. */
310 uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
311 bool may_enable; /* May be enabled in bonds. */
314 static struct ofport_dpif *
315 ofport_dpif_cast(const struct ofport *ofport)
317 assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
318 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
321 static void port_run(struct ofport_dpif *);
322 static void port_wait(struct ofport_dpif *);
323 static int set_cfm(struct ofport *, const struct cfm_settings *);
325 struct dpif_completion {
326 struct list list_node;
327 struct ofoperation *op;
330 /* Extra information about a classifier table.
331 * Currently used just for optimized flow revalidation. */
333 /* If either of these is nonnull, then this table has a form that allows
334 * flows to be tagged to avoid revalidating most flows for the most common
335 * kinds of flow table changes. */
336 struct cls_table *catchall_table; /* Table that wildcards all fields. */
337 struct cls_table *other_table; /* Table with any other wildcard set. */
338 uint32_t basis; /* Keeps each table's tags separate. */
341 struct ofproto_dpif {
350 struct netflow *netflow;
351 struct dpif_sflow *sflow;
352 struct hmap bundles; /* Contains "struct ofbundle"s. */
353 struct mac_learning *ml;
354 struct ofmirror *mirrors[MAX_MIRRORS];
355 bool has_bonded_bundles;
358 struct timer next_expiration;
364 struct table_dpif tables[N_TABLES];
365 bool need_revalidate;
366 struct tag_set revalidate_set;
368 /* Support for debugging async flow mods. */
369 struct list completions;
371 bool has_bundle_action; /* True when the first bundle action appears. */
374 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
375 * for debugging the asynchronous flow_mod implementation.) */
378 static void ofproto_dpif_unixctl_init(void);
380 static struct ofproto_dpif *
381 ofproto_dpif_cast(const struct ofproto *ofproto)
383 assert(ofproto->ofproto_class == &ofproto_dpif_class);
384 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
387 static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
389 static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
392 /* Packet processing. */
393 static void update_learning_table(struct ofproto_dpif *,
394 const struct flow *, int vlan,
396 static bool is_admissible(struct ofproto_dpif *, const struct flow *,
397 bool have_packet, tag_type *, int *vlanp,
398 struct ofbundle **in_bundlep);
399 static void handle_upcall(struct ofproto_dpif *, struct dpif_upcall *);
401 /* Flow expiration. */
402 static int expire(struct ofproto_dpif *);
405 static int send_packet(struct ofproto_dpif *, uint32_t odp_port,
406 const struct ofpbuf *packet);
408 compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
409 const struct flow *, uint32_t odp_port);
410 /* Global variables. */
411 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
413 /* Factory functions. */
416 enumerate_types(struct sset *types)
418 dp_enumerate_types(types);
422 enumerate_names(const char *type, struct sset *names)
424 return dp_enumerate_names(type, names);
428 del(const char *type, const char *name)
433 error = dpif_open(name, type, &dpif);
435 error = dpif_delete(dpif);
441 /* Basic life-cycle. */
443 static struct ofproto *
446 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
451 dealloc(struct ofproto *ofproto_)
453 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
458 construct(struct ofproto *ofproto_, int *n_tablesp)
460 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
461 const char *name = ofproto->up.name;
465 error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
467 VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
471 ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
472 ofproto->n_matches = 0;
474 dpif_flow_flush(ofproto->dpif);
475 dpif_recv_purge(ofproto->dpif);
477 error = dpif_recv_set_mask(ofproto->dpif,
478 ((1u << DPIF_UC_MISS) |
479 (1u << DPIF_UC_ACTION)));
481 VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
482 dpif_close(ofproto->dpif);
486 ofproto->netflow = NULL;
487 ofproto->sflow = NULL;
488 hmap_init(&ofproto->bundles);
489 ofproto->ml = mac_learning_create();
490 for (i = 0; i < MAX_MIRRORS; i++) {
491 ofproto->mirrors[i] = NULL;
493 ofproto->has_bonded_bundles = false;
495 timer_set_duration(&ofproto->next_expiration, 1000);
497 hmap_init(&ofproto->facets);
499 for (i = 0; i < N_TABLES; i++) {
500 struct table_dpif *table = &ofproto->tables[i];
502 table->catchall_table = NULL;
503 table->other_table = NULL;
504 table->basis = random_uint32();
506 ofproto->need_revalidate = false;
507 tag_set_init(&ofproto->revalidate_set);
509 list_init(&ofproto->completions);
511 ofproto_dpif_unixctl_init();
513 ofproto->has_bundle_action = false;
515 *n_tablesp = N_TABLES;
520 complete_operations(struct ofproto_dpif *ofproto)
522 struct dpif_completion *c, *next;
524 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
525 ofoperation_complete(c->op, 0);
526 list_remove(&c->list_node);
532 destruct(struct ofproto *ofproto_)
534 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
535 struct rule_dpif *rule, *next_rule;
536 struct classifier *table;
539 complete_operations(ofproto);
541 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
542 struct cls_cursor cursor;
544 cls_cursor_init(&cursor, table, NULL);
545 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
546 ofproto_rule_destroy(&rule->up);
550 for (i = 0; i < MAX_MIRRORS; i++) {
551 mirror_destroy(ofproto->mirrors[i]);
554 netflow_destroy(ofproto->netflow);
555 dpif_sflow_destroy(ofproto->sflow);
556 hmap_destroy(&ofproto->bundles);
557 mac_learning_destroy(ofproto->ml);
559 hmap_destroy(&ofproto->facets);
561 dpif_close(ofproto->dpif);
565 run(struct ofproto *ofproto_)
567 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
568 struct ofport_dpif *ofport;
569 struct ofbundle *bundle;
573 complete_operations(ofproto);
575 dpif_run(ofproto->dpif);
577 for (i = 0; i < 50; i++) {
578 struct dpif_upcall packet;
581 error = dpif_recv(ofproto->dpif, &packet);
583 if (error == ENODEV) {
584 /* Datapath destroyed. */
590 handle_upcall(ofproto, &packet);
593 if (timer_expired(&ofproto->next_expiration)) {
594 int delay = expire(ofproto);
595 timer_set_duration(&ofproto->next_expiration, delay);
598 if (ofproto->netflow) {
599 netflow_run(ofproto->netflow);
601 if (ofproto->sflow) {
602 dpif_sflow_run(ofproto->sflow);
605 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
608 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
612 mac_learning_run(ofproto->ml, &ofproto->revalidate_set);
614 /* Now revalidate if there's anything to do. */
615 if (ofproto->need_revalidate
616 || !tag_set_is_empty(&ofproto->revalidate_set)) {
617 struct tag_set revalidate_set = ofproto->revalidate_set;
618 bool revalidate_all = ofproto->need_revalidate;
619 struct facet *facet, *next;
621 /* Clear the revalidation flags. */
622 tag_set_init(&ofproto->revalidate_set);
623 ofproto->need_revalidate = false;
625 HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
627 || tag_set_intersects(&revalidate_set, facet->tags)) {
628 facet_revalidate(ofproto, facet);
637 wait(struct ofproto *ofproto_)
639 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
640 struct ofport_dpif *ofport;
641 struct ofbundle *bundle;
643 if (!clogged && !list_is_empty(&ofproto->completions)) {
644 poll_immediate_wake();
647 dpif_wait(ofproto->dpif);
648 dpif_recv_wait(ofproto->dpif);
649 if (ofproto->sflow) {
650 dpif_sflow_wait(ofproto->sflow);
652 if (!tag_set_is_empty(&ofproto->revalidate_set)) {
653 poll_immediate_wake();
655 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
658 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
661 mac_learning_wait(ofproto->ml);
662 if (ofproto->need_revalidate) {
663 /* Shouldn't happen, but if it does just go around again. */
664 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
665 poll_immediate_wake();
667 timer_wait(&ofproto->next_expiration);
672 flush(struct ofproto *ofproto_)
674 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
675 struct facet *facet, *next_facet;
677 HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
678 /* Mark the facet as not installed so that facet_remove() doesn't
679 * bother trying to uninstall it. There is no point in uninstalling it
680 * individually since we are about to blow away all the facets with
681 * dpif_flow_flush(). */
682 facet->installed = false;
683 facet->dp_packet_count = 0;
684 facet->dp_byte_count = 0;
685 facet_remove(ofproto, facet);
687 dpif_flow_flush(ofproto->dpif);
691 get_features(struct ofproto *ofproto_ OVS_UNUSED,
692 bool *arp_match_ip, uint32_t *actions)
694 *arp_match_ip = true;
695 *actions = ((1u << OFPAT_OUTPUT) |
696 (1u << OFPAT_SET_VLAN_VID) |
697 (1u << OFPAT_SET_VLAN_PCP) |
698 (1u << OFPAT_STRIP_VLAN) |
699 (1u << OFPAT_SET_DL_SRC) |
700 (1u << OFPAT_SET_DL_DST) |
701 (1u << OFPAT_SET_NW_SRC) |
702 (1u << OFPAT_SET_NW_DST) |
703 (1u << OFPAT_SET_NW_TOS) |
704 (1u << OFPAT_SET_TP_SRC) |
705 (1u << OFPAT_SET_TP_DST) |
706 (1u << OFPAT_ENQUEUE));
710 get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots)
712 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
713 struct dpif_dp_stats s;
715 strcpy(ots->name, "classifier");
717 dpif_get_dp_stats(ofproto->dpif, &s);
718 put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
719 put_32aligned_be64(&ots->matched_count,
720 htonll(s.n_hit + ofproto->n_matches));
724 set_netflow(struct ofproto *ofproto_,
725 const struct netflow_options *netflow_options)
727 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
729 if (netflow_options) {
730 if (!ofproto->netflow) {
731 ofproto->netflow = netflow_create();
733 return netflow_set_options(ofproto->netflow, netflow_options);
735 netflow_destroy(ofproto->netflow);
736 ofproto->netflow = NULL;
741 static struct ofport *
744 struct ofport_dpif *port = xmalloc(sizeof *port);
749 port_dealloc(struct ofport *port_)
751 struct ofport_dpif *port = ofport_dpif_cast(port_);
756 port_construct(struct ofport *port_)
758 struct ofport_dpif *port = ofport_dpif_cast(port_);
759 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
761 ofproto->need_revalidate = true;
762 port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
765 port->tag = tag_create_random();
766 port->may_enable = true;
768 if (ofproto->sflow) {
769 dpif_sflow_add_port(ofproto->sflow, port->odp_port,
770 netdev_get_name(port->up.netdev));
777 port_destruct(struct ofport *port_)
779 struct ofport_dpif *port = ofport_dpif_cast(port_);
780 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
782 ofproto->need_revalidate = true;
783 bundle_remove(port_);
784 set_cfm(port_, NULL);
785 if (ofproto->sflow) {
786 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
791 port_modified(struct ofport *port_)
793 struct ofport_dpif *port = ofport_dpif_cast(port_);
795 if (port->bundle && port->bundle->bond) {
796 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
801 port_reconfigured(struct ofport *port_, ovs_be32 old_config)
803 struct ofport_dpif *port = ofport_dpif_cast(port_);
804 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
805 ovs_be32 changed = old_config ^ port->up.opp.config;
807 if (changed & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
808 OFPPC_NO_FWD | OFPPC_NO_FLOOD)) {
809 ofproto->need_revalidate = true;
814 set_sflow(struct ofproto *ofproto_,
815 const struct ofproto_sflow_options *sflow_options)
817 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
818 struct dpif_sflow *ds = ofproto->sflow;
822 struct ofport_dpif *ofport;
824 ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
825 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
826 dpif_sflow_add_port(ds, ofport->odp_port,
827 netdev_get_name(ofport->up.netdev));
829 ofproto->need_revalidate = true;
831 dpif_sflow_set_options(ds, sflow_options);
834 dpif_sflow_destroy(ds);
835 ofproto->need_revalidate = true;
836 ofproto->sflow = NULL;
843 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
845 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
852 struct ofproto_dpif *ofproto;
854 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
855 ofproto->need_revalidate = true;
856 ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
859 if (cfm_configure(ofport->cfm, s)) {
865 cfm_destroy(ofport->cfm);
871 get_cfm_fault(const struct ofport *ofport_)
873 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
875 return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
879 get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
882 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
885 cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
894 /* Expires all MAC learning entries associated with 'port' and forces ofproto
895 * to revalidate every flow. */
897 bundle_flush_macs(struct ofbundle *bundle)
899 struct ofproto_dpif *ofproto = bundle->ofproto;
900 struct mac_learning *ml = ofproto->ml;
901 struct mac_entry *mac, *next_mac;
903 ofproto->need_revalidate = true;
904 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
905 if (mac->port.p == bundle) {
906 mac_learning_expire(ml, mac);
911 static struct ofbundle *
912 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
914 struct ofbundle *bundle;
916 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
918 if (bundle->aux == aux) {
925 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
926 * ones that are found to 'bundles'. */
928 bundle_lookup_multiple(struct ofproto_dpif *ofproto,
929 void **auxes, size_t n_auxes,
930 struct hmapx *bundles)
935 for (i = 0; i < n_auxes; i++) {
936 struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
938 hmapx_add(bundles, bundle);
944 bundle_del_port(struct ofport_dpif *port)
946 struct ofbundle *bundle = port->bundle;
948 bundle->ofproto->need_revalidate = true;
950 list_remove(&port->bundle_node);
954 lacp_slave_unregister(bundle->lacp, port);
957 bond_slave_unregister(bundle->bond, port);
960 bundle->floodable = true;
961 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
962 if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
963 bundle->floodable = false;
969 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
970 struct lacp_slave_settings *lacp,
971 uint32_t bond_stable_id)
973 struct ofport_dpif *port;
975 port = get_ofp_port(bundle->ofproto, ofp_port);
980 if (port->bundle != bundle) {
981 bundle->ofproto->need_revalidate = true;
983 bundle_del_port(port);
986 port->bundle = bundle;
987 list_push_back(&bundle->ports, &port->bundle_node);
988 if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
989 bundle->floodable = false;
993 port->bundle->ofproto->need_revalidate = true;
994 lacp_slave_register(bundle->lacp, port, lacp);
997 port->bond_stable_id = bond_stable_id;
1003 bundle_destroy(struct ofbundle *bundle)
1005 struct ofproto_dpif *ofproto;
1006 struct ofport_dpif *port, *next_port;
1013 ofproto = bundle->ofproto;
1014 for (i = 0; i < MAX_MIRRORS; i++) {
1015 struct ofmirror *m = ofproto->mirrors[i];
1017 if (m->out == bundle) {
1019 } else if (hmapx_find_and_delete(&m->srcs, bundle)
1020 || hmapx_find_and_delete(&m->dsts, bundle)) {
1021 ofproto->need_revalidate = true;
1026 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1027 bundle_del_port(port);
1030 bundle_flush_macs(bundle);
1031 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
1033 free(bundle->trunks);
1034 lacp_destroy(bundle->lacp);
1035 bond_destroy(bundle->bond);
1040 bundle_set(struct ofproto *ofproto_, void *aux,
1041 const struct ofproto_bundle_settings *s)
1043 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1044 bool need_flush = false;
1045 struct ofport_dpif *port;
1046 struct ofbundle *bundle;
1047 unsigned long *trunks;
1053 bundle_destroy(bundle_lookup(ofproto, aux));
1057 assert(s->n_slaves == 1 || s->bond != NULL);
1058 assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
1060 bundle = bundle_lookup(ofproto, aux);
1062 bundle = xmalloc(sizeof *bundle);
1064 bundle->ofproto = ofproto;
1065 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
1066 hash_pointer(aux, 0));
1068 bundle->name = NULL;
1070 list_init(&bundle->ports);
1071 bundle->vlan_mode = PORT_VLAN_TRUNK;
1073 bundle->trunks = NULL;
1074 bundle->lacp = NULL;
1075 bundle->bond = NULL;
1077 bundle->floodable = true;
1079 bundle->src_mirrors = 0;
1080 bundle->dst_mirrors = 0;
1081 bundle->mirror_out = 0;
1084 if (!bundle->name || strcmp(s->name, bundle->name)) {
1086 bundle->name = xstrdup(s->name);
1091 if (!bundle->lacp) {
1092 ofproto->need_revalidate = true;
1093 bundle->lacp = lacp_create();
1095 lacp_configure(bundle->lacp, s->lacp);
1097 lacp_destroy(bundle->lacp);
1098 bundle->lacp = NULL;
1101 /* Update set of ports. */
1103 for (i = 0; i < s->n_slaves; i++) {
1104 if (!bundle_add_port(bundle, s->slaves[i],
1105 s->lacp ? &s->lacp_slaves[i] : NULL,
1106 s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
1110 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
1111 struct ofport_dpif *next_port;
1113 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1114 for (i = 0; i < s->n_slaves; i++) {
1115 if (s->slaves[i] == port->up.ofp_port) {
1120 bundle_del_port(port);
1124 assert(list_size(&bundle->ports) <= s->n_slaves);
1126 if (list_is_empty(&bundle->ports)) {
1127 bundle_destroy(bundle);
1131 /* Set VLAN tagging mode */
1132 if (s->vlan_mode != bundle->vlan_mode) {
1133 bundle->vlan_mode = s->vlan_mode;
1138 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
1139 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
1141 if (vlan != bundle->vlan) {
1142 bundle->vlan = vlan;
1146 /* Get trunked VLANs. */
1147 switch (s->vlan_mode) {
1148 case PORT_VLAN_ACCESS:
1152 case PORT_VLAN_TRUNK:
1153 trunks = (unsigned long *) s->trunks;
1156 case PORT_VLAN_NATIVE_UNTAGGED:
1157 case PORT_VLAN_NATIVE_TAGGED:
1158 if (vlan != 0 && (!s->trunks
1159 || !bitmap_is_set(s->trunks, vlan)
1160 || bitmap_is_set(s->trunks, 0))) {
1161 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
1163 trunks = bitmap_clone(s->trunks, 4096);
1165 trunks = bitmap_allocate1(4096);
1167 bitmap_set1(trunks, vlan);
1168 bitmap_set0(trunks, 0);
1170 trunks = (unsigned long *) s->trunks;
1177 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
1178 free(bundle->trunks);
1179 if (trunks == s->trunks) {
1180 bundle->trunks = vlan_bitmap_clone(trunks);
1182 bundle->trunks = trunks;
1187 if (trunks != s->trunks) {
1192 if (!list_is_short(&bundle->ports)) {
1193 bundle->ofproto->has_bonded_bundles = true;
1195 if (bond_reconfigure(bundle->bond, s->bond)) {
1196 ofproto->need_revalidate = true;
1199 bundle->bond = bond_create(s->bond);
1200 ofproto->need_revalidate = true;
1203 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1204 bond_slave_register(bundle->bond, port, port->bond_stable_id,
1208 bond_destroy(bundle->bond);
1209 bundle->bond = NULL;
1212 /* If we changed something that would affect MAC learning, un-learn
1213 * everything on this port and force flow revalidation. */
1215 bundle_flush_macs(bundle);
1222 bundle_remove(struct ofport *port_)
1224 struct ofport_dpif *port = ofport_dpif_cast(port_);
1225 struct ofbundle *bundle = port->bundle;
1228 bundle_del_port(port);
1229 if (list_is_empty(&bundle->ports)) {
1230 bundle_destroy(bundle);
1231 } else if (list_is_short(&bundle->ports)) {
1232 bond_destroy(bundle->bond);
1233 bundle->bond = NULL;
1239 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
1241 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
1242 struct ofport_dpif *port = port_;
1243 uint8_t ea[ETH_ADDR_LEN];
1246 error = netdev_get_etheraddr(port->up.netdev, ea);
1248 struct ofpbuf packet;
1251 ofpbuf_init(&packet, 0);
1252 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
1254 memcpy(packet_pdu, pdu, pdu_size);
1256 error = netdev_send(port->up.netdev, &packet);
1258 VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed "
1259 "(%s)", port->bundle->name,
1260 netdev_get_name(port->up.netdev), strerror(error));
1262 ofpbuf_uninit(&packet);
1264 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
1265 "%s (%s)", port->bundle->name,
1266 netdev_get_name(port->up.netdev), strerror(error));
1271 bundle_send_learning_packets(struct ofbundle *bundle)
1273 struct ofproto_dpif *ofproto = bundle->ofproto;
1274 int error, n_packets, n_errors;
1275 struct mac_entry *e;
1277 error = n_packets = n_errors = 0;
1278 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
1279 if (e->port.p != bundle) {
1280 int ret = bond_send_learning_packet(bundle->bond, e->mac, e->vlan);
1290 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1291 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
1292 "packets, last error was: %s",
1293 bundle->name, n_errors, n_packets, strerror(error));
1295 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
1296 bundle->name, n_packets);
1301 bundle_run(struct ofbundle *bundle)
1304 lacp_run(bundle->lacp, send_pdu_cb);
1307 struct ofport_dpif *port;
1309 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1310 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
1313 bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
1314 lacp_negotiated(bundle->lacp));
1315 if (bond_should_send_learning_packets(bundle->bond)) {
1316 bundle_send_learning_packets(bundle);
1322 bundle_wait(struct ofbundle *bundle)
1325 lacp_wait(bundle->lacp);
1328 bond_wait(bundle->bond);
1335 mirror_scan(struct ofproto_dpif *ofproto)
1339 for (idx = 0; idx < MAX_MIRRORS; idx++) {
1340 if (!ofproto->mirrors[idx]) {
1347 static struct ofmirror *
1348 mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
1352 for (i = 0; i < MAX_MIRRORS; i++) {
1353 struct ofmirror *mirror = ofproto->mirrors[i];
1354 if (mirror && mirror->aux == aux) {
1363 mirror_set(struct ofproto *ofproto_, void *aux,
1364 const struct ofproto_mirror_settings *s)
1366 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1367 mirror_mask_t mirror_bit;
1368 struct ofbundle *bundle;
1369 struct ofmirror *mirror;
1370 struct ofbundle *out;
1371 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
1372 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
1375 mirror = mirror_lookup(ofproto, aux);
1377 mirror_destroy(mirror);
1383 idx = mirror_scan(ofproto);
1385 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
1387 ofproto->up.name, MAX_MIRRORS, s->name);
1391 mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
1392 mirror->ofproto = ofproto;
1395 mirror->out_vlan = -1;
1396 mirror->name = NULL;
1399 if (!mirror->name || strcmp(s->name, mirror->name)) {
1401 mirror->name = xstrdup(s->name);
1404 /* Get the new configuration. */
1405 if (s->out_bundle) {
1406 out = bundle_lookup(ofproto, s->out_bundle);
1408 mirror_destroy(mirror);
1414 out_vlan = s->out_vlan;
1416 bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
1417 bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
1419 /* If the configuration has not changed, do nothing. */
1420 if (hmapx_equals(&srcs, &mirror->srcs)
1421 && hmapx_equals(&dsts, &mirror->dsts)
1422 && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
1423 && mirror->out == out
1424 && mirror->out_vlan == out_vlan)
1426 hmapx_destroy(&srcs);
1427 hmapx_destroy(&dsts);
1431 hmapx_swap(&srcs, &mirror->srcs);
1432 hmapx_destroy(&srcs);
1434 hmapx_swap(&dsts, &mirror->dsts);
1435 hmapx_destroy(&dsts);
1437 free(mirror->vlans);
1438 mirror->vlans = vlan_bitmap_clone(s->src_vlans);
1441 mirror->out_vlan = out_vlan;
1443 /* Update bundles. */
1444 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
1445 HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
1446 if (hmapx_contains(&mirror->srcs, bundle)) {
1447 bundle->src_mirrors |= mirror_bit;
1449 bundle->src_mirrors &= ~mirror_bit;
1452 if (hmapx_contains(&mirror->dsts, bundle)) {
1453 bundle->dst_mirrors |= mirror_bit;
1455 bundle->dst_mirrors &= ~mirror_bit;
1458 if (mirror->out == bundle) {
1459 bundle->mirror_out |= mirror_bit;
1461 bundle->mirror_out &= ~mirror_bit;
1465 ofproto->need_revalidate = true;
1466 mac_learning_flush(ofproto->ml);
1472 mirror_destroy(struct ofmirror *mirror)
1474 struct ofproto_dpif *ofproto;
1475 mirror_mask_t mirror_bit;
1476 struct ofbundle *bundle;
1482 ofproto = mirror->ofproto;
1483 ofproto->need_revalidate = true;
1484 mac_learning_flush(ofproto->ml);
1486 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
1487 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1488 bundle->src_mirrors &= ~mirror_bit;
1489 bundle->dst_mirrors &= ~mirror_bit;
1490 bundle->mirror_out &= ~mirror_bit;
1493 hmapx_destroy(&mirror->srcs);
1494 hmapx_destroy(&mirror->dsts);
1495 free(mirror->vlans);
1497 ofproto->mirrors[mirror->idx] = NULL;
1503 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
1505 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1506 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
1507 ofproto->need_revalidate = true;
1508 mac_learning_flush(ofproto->ml);
1514 is_mirror_output_bundle(struct ofproto *ofproto_, void *aux)
1516 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1517 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
1518 return bundle && bundle->mirror_out != 0;
1522 forward_bpdu_changed(struct ofproto *ofproto_)
1524 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1525 /* Revalidate cached flows whenever forward_bpdu option changes. */
1526 ofproto->need_revalidate = true;
1531 static struct ofport_dpif *
1532 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
1534 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
1535 return ofport ? ofport_dpif_cast(ofport) : NULL;
1538 static struct ofport_dpif *
1539 get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
1541 return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
1545 ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
1546 struct dpif_port *dpif_port)
1548 ofproto_port->name = dpif_port->name;
1549 ofproto_port->type = dpif_port->type;
1550 ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
1554 port_run(struct ofport_dpif *ofport)
1556 bool enable = netdev_get_carrier(ofport->up.netdev);
1559 cfm_run(ofport->cfm);
1561 if (cfm_should_send_ccm(ofport->cfm)) {
1562 struct ofpbuf packet;
1564 ofpbuf_init(&packet, 0);
1565 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.opp.hw_addr);
1566 send_packet(ofproto_dpif_cast(ofport->up.ofproto),
1567 ofport->odp_port, &packet);
1568 ofpbuf_uninit(&packet);
1571 enable = enable && !cfm_get_fault(ofport->cfm);
1574 if (ofport->bundle) {
1575 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
1578 if (ofport->may_enable != enable) {
1579 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1581 if (ofproto->has_bundle_action) {
1582 ofproto->need_revalidate = true;
1586 ofport->may_enable = enable;
1590 port_wait(struct ofport_dpif *ofport)
1593 cfm_wait(ofport->cfm);
1598 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
1599 struct ofproto_port *ofproto_port)
1601 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1602 struct dpif_port dpif_port;
1605 error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
1607 ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
1613 port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
1615 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1619 error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
1621 *ofp_portp = odp_port_to_ofp_port(odp_port);
1627 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
1629 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1632 error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
1634 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
1636 /* The caller is going to close ofport->up.netdev. If this is a
1637 * bonded port, then the bond is using that netdev, so remove it
1638 * from the bond. The client will need to reconfigure everything
1639 * after deleting ports, so then the slave will get re-added. */
1640 bundle_remove(&ofport->up);
1646 struct port_dump_state {
1647 struct dpif_port_dump dump;
1652 port_dump_start(const struct ofproto *ofproto_, void **statep)
1654 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1655 struct port_dump_state *state;
1657 *statep = state = xmalloc(sizeof *state);
1658 dpif_port_dump_start(&state->dump, ofproto->dpif);
1659 state->done = false;
1664 port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
1665 struct ofproto_port *port)
1667 struct port_dump_state *state = state_;
1668 struct dpif_port dpif_port;
1670 if (dpif_port_dump_next(&state->dump, &dpif_port)) {
1671 ofproto_port_from_dpif_port(port, &dpif_port);
1674 int error = dpif_port_dump_done(&state->dump);
1676 return error ? error : EOF;
1681 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
1683 struct port_dump_state *state = state_;
1686 dpif_port_dump_done(&state->dump);
1693 port_poll(const struct ofproto *ofproto_, char **devnamep)
1695 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1696 return dpif_port_poll(ofproto->dpif, devnamep);
1700 port_poll_wait(const struct ofproto *ofproto_)
1702 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1703 dpif_port_poll_wait(ofproto->dpif);
1707 port_is_lacp_current(const struct ofport *ofport_)
1709 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1710 return (ofport->bundle && ofport->bundle->lacp
1711 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
1715 /* Upcall handling. */
1717 /* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an
1718 * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to
1719 * their individual configurations.
1721 * If 'clone' is true, the caller retains ownership of 'upcall->packet'.
1722 * Otherwise, ownership is transferred to this function. */
1724 send_packet_in(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall,
1725 const struct flow *flow, bool clone)
1727 struct ofputil_packet_in pin;
1728 struct user_action_cookie cookie;
1730 pin.packet = upcall->packet;
1731 pin.in_port = flow->in_port;
1732 pin.reason = upcall->type == DPIF_UC_MISS ? OFPR_NO_MATCH : OFPR_ACTION;
1733 pin.buffer_id = 0; /* not yet known */
1735 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
1736 pin.send_len = cookie.data;
1737 connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow,
1738 clone ? NULL : upcall->packet);
1742 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
1743 const struct ofpbuf *packet)
1745 struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
1751 if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
1753 cfm_process_heartbeat(ofport->cfm, packet);
1756 } else if (ofport->bundle && ofport->bundle->lacp
1757 && flow->dl_type == htons(ETH_TYPE_LACP)) {
1759 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
1767 handle_miss_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall)
1769 struct facet *facet;
1772 /* Obtain in_port and tun_id, at least. */
1773 odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
1775 /* Set header pointers in 'flow'. */
1776 flow_extract(upcall->packet, flow.tun_id, flow.in_port, &flow);
1778 /* Handle 802.1ag and LACP. */
1779 if (process_special(ofproto, &flow, upcall->packet)) {
1780 ofpbuf_delete(upcall->packet);
1781 ofproto->n_matches++;
1785 /* Check with in-band control to see if this packet should be sent
1786 * to the local port regardless of the flow table. */
1787 if (connmgr_msg_in_hook(ofproto->up.connmgr, &flow, upcall->packet)) {
1788 send_packet(ofproto, OVSP_LOCAL, upcall->packet);
1791 facet = facet_lookup_valid(ofproto, &flow);
1793 struct rule_dpif *rule = rule_dpif_lookup(ofproto, &flow, 0);
1795 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
1796 struct ofport_dpif *port = get_ofp_port(ofproto, flow.in_port);
1798 if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) {
1799 COVERAGE_INC(ofproto_dpif_no_packet_in);
1800 /* XXX install 'drop' flow entry */
1801 ofpbuf_delete(upcall->packet);
1805 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
1809 send_packet_in(ofproto, upcall, &flow, false);
1813 facet = facet_create(rule, &flow, upcall->packet);
1814 } else if (!facet->may_install) {
1815 /* The facet is not installable, that is, we need to process every
1816 * packet, so process the current packet's actions into 'facet'. */
1817 facet_make_actions(ofproto, facet, upcall->packet);
1820 if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
1822 * Extra-special case for fail-open mode.
1824 * We are in fail-open mode and the packet matched the fail-open rule,
1825 * but we are connected to a controller too. We should send the packet
1826 * up to the controller in the hope that it will try to set up a flow
1827 * and thereby allow us to exit fail-open.
1829 * See the top-level comment in fail-open.c for more information.
1831 send_packet_in(ofproto, upcall, &flow, true);
1834 facet_execute(ofproto, facet, upcall->packet);
1835 facet_install(ofproto, facet, false);
1836 ofproto->n_matches++;
1840 handle_userspace_upcall(struct ofproto_dpif *ofproto,
1841 struct dpif_upcall *upcall)
1844 struct user_action_cookie cookie;
1846 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
1848 if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
1849 if (ofproto->sflow) {
1850 odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
1851 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow, &cookie);
1853 ofpbuf_delete(upcall->packet);
1855 } else if (cookie.type == USER_ACTION_COOKIE_CONTROLLER) {
1856 COVERAGE_INC(ofproto_dpif_ctlr_action);
1857 odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
1858 send_packet_in(ofproto, upcall, &flow, false);
1860 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
1865 handle_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall)
1867 switch (upcall->type) {
1868 case DPIF_UC_ACTION:
1869 handle_userspace_upcall(ofproto, upcall);
1873 handle_miss_upcall(ofproto, upcall);
1876 case DPIF_N_UC_TYPES:
1878 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
1883 /* Flow expiration. */
1885 static int facet_max_idle(const struct ofproto_dpif *);
1886 static void update_stats(struct ofproto_dpif *);
1887 static void rule_expire(struct rule_dpif *);
1888 static void expire_facets(struct ofproto_dpif *, int dp_max_idle);
1890 /* This function is called periodically by run(). Its job is to collect
1891 * updates for the flows that have been installed into the datapath, most
1892 * importantly when they last were used, and then use that information to
1893 * expire flows that have not been used recently.
1895 * Returns the number of milliseconds after which it should be called again. */
1897 expire(struct ofproto_dpif *ofproto)
1899 struct rule_dpif *rule, *next_rule;
1900 struct classifier *table;
1903 /* Update stats for each flow in the datapath. */
1904 update_stats(ofproto);
1906 /* Expire facets that have been idle too long. */
1907 dp_max_idle = facet_max_idle(ofproto);
1908 expire_facets(ofproto, dp_max_idle);
1910 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
1911 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1912 struct cls_cursor cursor;
1914 cls_cursor_init(&cursor, table, NULL);
1915 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1920 /* All outstanding data in existing flows has been accounted, so it's a
1921 * good time to do bond rebalancing. */
1922 if (ofproto->has_bonded_bundles) {
1923 struct ofbundle *bundle;
1925 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1927 bond_rebalance(bundle->bond, &ofproto->revalidate_set);
1932 return MIN(dp_max_idle, 1000);
1935 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
1937 * This function also pushes statistics updates to rules which each facet
1938 * resubmits into. Generally these statistics will be accurate. However, if a
1939 * facet changes the rule it resubmits into at some time in between
1940 * update_stats() runs, it is possible that statistics accrued to the
1941 * old rule will be incorrectly attributed to the new rule. This could be
1942 * avoided by calling update_stats() whenever rules are created or
1943 * deleted. However, the performance impact of making so many calls to the
1944 * datapath do not justify the benefit of having perfectly accurate statistics.
1947 update_stats(struct ofproto_dpif *p)
1949 const struct dpif_flow_stats *stats;
1950 struct dpif_flow_dump dump;
1951 const struct nlattr *key;
1954 dpif_flow_dump_start(&dump, p->dpif);
1955 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
1956 struct facet *facet;
1959 if (odp_flow_key_to_flow(key, key_len, &flow)) {
1963 odp_flow_key_format(key, key_len, &s);
1964 VLOG_WARN_RL(&rl, "failed to convert datapath flow key to flow: %s",
1970 facet = facet_find(p, &flow);
1972 if (facet && facet->installed) {
1974 if (stats->n_packets >= facet->dp_packet_count) {
1975 uint64_t extra = stats->n_packets - facet->dp_packet_count;
1976 facet->packet_count += extra;
1978 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
1981 if (stats->n_bytes >= facet->dp_byte_count) {
1982 facet->byte_count += stats->n_bytes - facet->dp_byte_count;
1984 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
1987 facet->dp_packet_count = stats->n_packets;
1988 facet->dp_byte_count = stats->n_bytes;
1990 facet_update_time(p, facet, stats->used);
1991 facet_account(p, facet);
1992 facet_push_stats(facet);
1994 /* There's a flow in the datapath that we know nothing about.
1996 COVERAGE_INC(facet_unexpected);
1997 dpif_flow_del(p->dpif, key, key_len, NULL);
2000 dpif_flow_dump_done(&dump);
2003 /* Calculates and returns the number of milliseconds of idle time after which
2004 * facets should expire from the datapath and we should fold their statistics
2005 * into their parent rules in userspace. */
2007 facet_max_idle(const struct ofproto_dpif *ofproto)
2010 * Idle time histogram.
2012 * Most of the time a switch has a relatively small number of facets. When
2013 * this is the case we might as well keep statistics for all of them in
2014 * userspace and to cache them in the kernel datapath for performance as
2017 * As the number of facets increases, the memory required to maintain
2018 * statistics about them in userspace and in the kernel becomes
2019 * significant. However, with a large number of facets it is likely that
2020 * only a few of them are "heavy hitters" that consume a large amount of
2021 * bandwidth. At this point, only heavy hitters are worth caching in the
2022 * kernel and maintaining in userspaces; other facets we can discard.
2024 * The technique used to compute the idle time is to build a histogram with
2025 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
2026 * that is installed in the kernel gets dropped in the appropriate bucket.
2027 * After the histogram has been built, we compute the cutoff so that only
2028 * the most-recently-used 1% of facets (but at least
2029 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
2030 * the most-recently-used bucket of facets is kept, so actually an
2031 * arbitrary number of facets can be kept in any given expiration run
2032 * (though the next run will delete most of those unless they receive
2035 * This requires a second pass through the facets, in addition to the pass
2036 * made by update_stats(), because the former function never looks
2037 * at uninstallable facets.
2039 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
2040 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
2041 int buckets[N_BUCKETS] = { 0 };
2042 int total, subtotal, bucket;
2043 struct facet *facet;
2047 total = hmap_count(&ofproto->facets);
2048 if (total <= ofproto->up.flow_eviction_threshold) {
2049 return N_BUCKETS * BUCKET_WIDTH;
2052 /* Build histogram. */
2054 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
2055 long long int idle = now - facet->used;
2056 int bucket = (idle <= 0 ? 0
2057 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
2058 : (unsigned int) idle / BUCKET_WIDTH);
2062 /* Find the first bucket whose flows should be expired. */
2063 subtotal = bucket = 0;
2065 subtotal += buckets[bucket++];
2066 } while (bucket < N_BUCKETS &&
2067 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
2069 if (VLOG_IS_DBG_ENABLED()) {
2073 ds_put_cstr(&s, "keep");
2074 for (i = 0; i < N_BUCKETS; i++) {
2076 ds_put_cstr(&s, ", drop");
2079 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
2082 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
2086 return bucket * BUCKET_WIDTH;
2090 facet_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
2092 if (ofproto->netflow && !facet_is_controller_flow(facet) &&
2093 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
2094 struct ofexpired expired;
2096 if (facet->installed) {
2097 struct dpif_flow_stats stats;
2099 facet_put__(ofproto, facet, facet->actions, facet->actions_len,
2101 facet_update_stats(ofproto, facet, &stats);
2104 expired.flow = facet->flow;
2105 expired.packet_count = facet->packet_count;
2106 expired.byte_count = facet->byte_count;
2107 expired.used = facet->used;
2108 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
2113 expire_facets(struct ofproto_dpif *ofproto, int dp_max_idle)
2115 long long int cutoff = time_msec() - dp_max_idle;
2116 struct facet *facet, *next_facet;
2118 HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
2119 facet_active_timeout(ofproto, facet);
2120 if (facet->used < cutoff) {
2121 facet_remove(ofproto, facet);
2126 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
2127 * then delete it entirely. */
2129 rule_expire(struct rule_dpif *rule)
2131 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2132 struct facet *facet, *next_facet;
2136 /* Has 'rule' expired? */
2138 if (rule->up.hard_timeout
2139 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
2140 reason = OFPRR_HARD_TIMEOUT;
2141 } else if (rule->up.idle_timeout && list_is_empty(&rule->facets)
2142 && now > rule->used + rule->up.idle_timeout * 1000) {
2143 reason = OFPRR_IDLE_TIMEOUT;
2148 COVERAGE_INC(ofproto_dpif_expired);
2150 /* Update stats. (This is a no-op if the rule expired due to an idle
2151 * timeout, because that only happens when the rule has no facets left.) */
2152 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
2153 facet_remove(ofproto, facet);
2156 /* Get rid of the rule. */
2157 ofproto_rule_expire(&rule->up, reason);
2162 /* Creates and returns a new facet owned by 'rule', given a 'flow' and an
2163 * example 'packet' within that flow.
2165 * The caller must already have determined that no facet with an identical
2166 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
2167 * the ofproto's classifier table. */
2168 static struct facet *
2169 facet_create(struct rule_dpif *rule, const struct flow *flow,
2170 const struct ofpbuf *packet)
2172 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2173 struct facet *facet;
2175 facet = xzalloc(sizeof *facet);
2176 facet->used = time_msec();
2177 hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
2178 list_push_back(&rule->facets, &facet->list_node);
2180 facet->flow = *flow;
2181 netflow_flow_init(&facet->nf_flow);
2182 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
2184 facet_make_actions(ofproto, facet, packet);
2190 facet_free(struct facet *facet)
2192 free(facet->actions);
2196 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
2197 * 'packet', which arrived on 'in_port'.
2199 * Takes ownership of 'packet'. */
2201 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
2202 const struct nlattr *odp_actions, size_t actions_len,
2203 struct ofpbuf *packet)
2205 struct odputil_keybuf keybuf;
2209 if (actions_len == NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t))
2210 && odp_actions->nla_type == OVS_ACTION_ATTR_USERSPACE) {
2211 const struct user_action_cookie *cookie;
2212 struct dpif_upcall upcall;
2214 cookie = nl_attr_get_unspec(odp_actions, sizeof(*cookie));
2215 if (cookie->type == USER_ACTION_COOKIE_CONTROLLER) {
2216 /* As an optimization, avoid a round-trip from userspace to kernel
2217 * to userspace. This also avoids possibly filling up kernel packet
2218 * buffers along the way.
2219 * This optimization does not work in case of sFlow is turned ON.
2220 * Since first action would be sFlow SAMPLE action followed by
2221 * Controller action. */
2223 upcall.type = DPIF_UC_ACTION;
2224 upcall.packet = packet;
2227 upcall.userdata = nl_attr_get_u64(odp_actions);
2229 send_packet_in(ofproto, &upcall, flow, false);
2234 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
2235 odp_flow_key_from_flow(&key, flow);
2237 error = dpif_execute(ofproto->dpif, key.data, key.size,
2238 odp_actions, actions_len, packet);
2240 ofpbuf_delete(packet);
2244 /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
2245 * statistics appropriately. 'packet' must have at least sizeof(struct
2246 * ofp_packet_in) bytes of headroom.
2248 * For correct results, 'packet' must actually be in 'facet''s flow; that is,
2249 * applying flow_extract() to 'packet' would yield the same flow as
2252 * 'facet' must have accurately composed datapath actions; that is, it must
2253 * not be in need of revalidation.
2255 * Takes ownership of 'packet'. */
2257 facet_execute(struct ofproto_dpif *ofproto, struct facet *facet,
2258 struct ofpbuf *packet)
2260 struct dpif_flow_stats stats;
2262 assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
2264 dpif_flow_stats_extract(&facet->flow, packet, &stats);
2265 stats.used = time_msec();
2266 if (execute_odp_actions(ofproto, &facet->flow,
2267 facet->actions, facet->actions_len, packet)) {
2268 facet_update_stats(ofproto, facet, &stats);
2272 /* Remove 'facet' from 'ofproto' and free up the associated memory:
2274 * - If 'facet' was installed in the datapath, uninstalls it and updates its
2275 * rule's statistics, via facet_uninstall().
2277 * - Removes 'facet' from its rule and from ofproto->facets.
2280 facet_remove(struct ofproto_dpif *ofproto, struct facet *facet)
2282 facet_uninstall(ofproto, facet);
2283 facet_flush_stats(ofproto, facet);
2284 hmap_remove(&ofproto->facets, &facet->hmap_node);
2285 list_remove(&facet->list_node);
2289 /* Composes the datapath actions for 'facet' based on its rule's actions. */
2291 facet_make_actions(struct ofproto_dpif *p, struct facet *facet,
2292 const struct ofpbuf *packet)
2294 const struct rule_dpif *rule = facet->rule;
2295 struct ofpbuf *odp_actions;
2296 struct action_xlate_ctx ctx;
2298 action_xlate_ctx_init(&ctx, p, &facet->flow, packet);
2299 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
2300 facet->tags = ctx.tags;
2301 facet->may_install = ctx.may_set_up_flow;
2302 facet->has_learn = ctx.has_learn;
2303 facet->has_normal = ctx.has_normal;
2304 facet->nf_flow.output_iface = ctx.nf_output_iface;
2306 if (facet->actions_len != odp_actions->size
2307 || memcmp(facet->actions, odp_actions->data, odp_actions->size)) {
2308 free(facet->actions);
2309 facet->actions_len = odp_actions->size;
2310 facet->actions = xmemdup(odp_actions->data, odp_actions->size);
2313 ofpbuf_delete(odp_actions);
2316 /* Updates 'facet''s flow in the datapath setting its actions to 'actions_len'
2317 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
2318 * in the datapath will be zeroed and 'stats' will be updated with traffic new
2319 * since 'facet' was last updated.
2321 * Returns 0 if successful, otherwise a positive errno value.*/
2323 facet_put__(struct ofproto_dpif *ofproto, struct facet *facet,
2324 const struct nlattr *actions, size_t actions_len,
2325 struct dpif_flow_stats *stats)
2327 struct odputil_keybuf keybuf;
2328 enum dpif_flow_put_flags flags;
2332 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
2334 flags |= DPIF_FP_ZERO_STATS;
2337 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
2338 odp_flow_key_from_flow(&key, &facet->flow);
2340 ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
2341 actions, actions_len, stats);
2344 facet_reset_dp_stats(facet, stats);
2350 /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
2351 * 'zero_stats' is true, clears any existing statistics from the datapath for
2354 facet_install(struct ofproto_dpif *p, struct facet *facet, bool zero_stats)
2356 struct dpif_flow_stats stats;
2358 if (facet->may_install
2359 && !facet_put__(p, facet, facet->actions, facet->actions_len,
2360 zero_stats ? &stats : NULL)) {
2361 facet->installed = true;
2366 facet_account(struct ofproto_dpif *ofproto, struct facet *facet)
2369 const struct nlattr *a;
2373 if (facet->byte_count <= facet->accounted_bytes) {
2376 n_bytes = facet->byte_count - facet->accounted_bytes;
2377 facet->accounted_bytes = facet->byte_count;
2379 /* Feed information from the active flows back into the learning table to
2380 * ensure that table is always in sync with what is actually flowing
2381 * through the datapath. */
2382 if (facet->has_learn || facet->has_normal) {
2383 struct action_xlate_ctx ctx;
2385 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
2386 ctx.may_learn = true;
2387 ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
2388 facet->rule->up.n_actions));
2391 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
2395 /* This loop feeds byte counters to bond_account() for rebalancing to use
2396 * as a basis. We also need to track the actual VLAN on which the packet
2397 * is going to be sent to ensure that it matches the one passed to
2398 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
2400 vlan_tci = facet->flow.vlan_tci;
2401 NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->actions, facet->actions_len) {
2402 struct ofport_dpif *port;
2404 switch (nl_attr_type(a)) {
2405 case OVS_ACTION_ATTR_OUTPUT:
2406 port = get_odp_port(ofproto, nl_attr_get_u32(a));
2407 if (port && port->bundle && port->bundle->bond) {
2408 bond_account(port->bundle->bond, &facet->flow,
2409 vlan_tci_to_vid(vlan_tci), n_bytes);
2413 case OVS_ACTION_ATTR_POP_VLAN:
2414 vlan_tci = htons(0);
2417 case OVS_ACTION_ATTR_PUSH_VLAN:
2418 vlan_tci = nl_attr_get_be16(a);
2424 /* If 'rule' is installed in the datapath, uninstalls it. */
2426 facet_uninstall(struct ofproto_dpif *p, struct facet *facet)
2428 if (facet->installed) {
2429 struct odputil_keybuf keybuf;
2430 struct dpif_flow_stats stats;
2434 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
2435 odp_flow_key_from_flow(&key, &facet->flow);
2437 error = dpif_flow_del(p->dpif, key.data, key.size, &stats);
2438 facet_reset_dp_stats(facet, &stats);
2440 facet_update_stats(p, facet, &stats);
2442 facet->installed = false;
2444 assert(facet->dp_packet_count == 0);
2445 assert(facet->dp_byte_count == 0);
2449 /* Returns true if the only action for 'facet' is to send to the controller.
2450 * (We don't report NetFlow expiration messages for such facets because they
2451 * are just part of the control logic for the network, not real traffic). */
2453 facet_is_controller_flow(struct facet *facet)
2456 && facet->rule->up.n_actions == 1
2457 && action_outputs_to_port(&facet->rule->up.actions[0],
2458 htons(OFPP_CONTROLLER)));
2461 /* Resets 'facet''s datapath statistics counters. This should be called when
2462 * 'facet''s statistics are cleared in the datapath. If 'stats' is non-null,
2463 * it should contain the statistics returned by dpif when 'facet' was reset in
2464 * the datapath. 'stats' will be modified to only included statistics new
2465 * since 'facet' was last updated. */
2467 facet_reset_dp_stats(struct facet *facet, struct dpif_flow_stats *stats)
2469 if (stats && facet->dp_packet_count <= stats->n_packets
2470 && facet->dp_byte_count <= stats->n_bytes) {
2471 stats->n_packets -= facet->dp_packet_count;
2472 stats->n_bytes -= facet->dp_byte_count;
2475 facet->dp_packet_count = 0;
2476 facet->dp_byte_count = 0;
2479 /* Folds all of 'facet''s statistics into its rule. Also updates the
2480 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
2481 * 'facet''s statistics in the datapath should have been zeroed and folded into
2482 * its packet and byte counts before this function is called. */
2484 facet_flush_stats(struct ofproto_dpif *ofproto, struct facet *facet)
2486 assert(!facet->dp_byte_count);
2487 assert(!facet->dp_packet_count);
2489 facet_push_stats(facet);
2490 facet_account(ofproto, facet);
2492 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
2493 struct ofexpired expired;
2494 expired.flow = facet->flow;
2495 expired.packet_count = facet->packet_count;
2496 expired.byte_count = facet->byte_count;
2497 expired.used = facet->used;
2498 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
2501 facet->rule->packet_count += facet->packet_count;
2502 facet->rule->byte_count += facet->byte_count;
2504 /* Reset counters to prevent double counting if 'facet' ever gets
2506 facet_reset_counters(facet);
2508 netflow_flow_clear(&facet->nf_flow);
2511 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2512 * Returns it if found, otherwise a null pointer.
2514 * The returned facet might need revalidation; use facet_lookup_valid()
2515 * instead if that is important. */
2516 static struct facet *
2517 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
2519 struct facet *facet;
2521 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
2523 if (flow_equal(flow, &facet->flow)) {
2531 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2532 * Returns it if found, otherwise a null pointer.
2534 * The returned facet is guaranteed to be valid. */
2535 static struct facet *
2536 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
2538 struct facet *facet = facet_find(ofproto, flow);
2540 /* The facet we found might not be valid, since we could be in need of
2541 * revalidation. If it is not valid, don't return it. */
2543 && ofproto->need_revalidate
2544 && !facet_revalidate(ofproto, facet)) {
2545 COVERAGE_INC(facet_invalidated);
2552 /* Re-searches 'ofproto''s classifier for a rule matching 'facet':
2554 * - If the rule found is different from 'facet''s current rule, moves
2555 * 'facet' to the new rule and recompiles its actions.
2557 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
2558 * where it is and recompiles its actions anyway.
2560 * - If there is none, destroys 'facet'.
2562 * Returns true if 'facet' still exists, false if it has been destroyed. */
2564 facet_revalidate(struct ofproto_dpif *ofproto, struct facet *facet)
2566 struct action_xlate_ctx ctx;
2567 struct ofpbuf *odp_actions;
2568 struct rule_dpif *new_rule;
2569 bool actions_changed;
2571 COVERAGE_INC(facet_revalidate);
2573 /* Determine the new rule. */
2574 new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
2576 /* No new rule, so delete the facet. */
2577 facet_remove(ofproto, facet);
2581 /* Calculate new datapath actions.
2583 * We do not modify any 'facet' state yet, because we might need to, e.g.,
2584 * emit a NetFlow expiration and, if so, we need to have the old state
2585 * around to properly compose it. */
2586 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
2587 odp_actions = xlate_actions(&ctx,
2588 new_rule->up.actions, new_rule->up.n_actions);
2589 actions_changed = (facet->actions_len != odp_actions->size
2590 || memcmp(facet->actions, odp_actions->data,
2591 facet->actions_len));
2593 /* If the datapath actions changed or the installability changed,
2594 * then we need to talk to the datapath. */
2595 if (actions_changed || ctx.may_set_up_flow != facet->installed) {
2596 if (ctx.may_set_up_flow) {
2597 struct dpif_flow_stats stats;
2599 facet_put__(ofproto, facet,
2600 odp_actions->data, odp_actions->size, &stats);
2601 facet_update_stats(ofproto, facet, &stats);
2603 facet_uninstall(ofproto, facet);
2606 /* The datapath flow is gone or has zeroed stats, so push stats out of
2607 * 'facet' into 'rule'. */
2608 facet_flush_stats(ofproto, facet);
2611 /* Update 'facet' now that we've taken care of all the old state. */
2612 facet->tags = ctx.tags;
2613 facet->nf_flow.output_iface = ctx.nf_output_iface;
2614 facet->may_install = ctx.may_set_up_flow;
2615 facet->has_learn = ctx.has_learn;
2616 facet->has_normal = ctx.has_normal;
2617 if (actions_changed) {
2618 free(facet->actions);
2619 facet->actions_len = odp_actions->size;
2620 facet->actions = xmemdup(odp_actions->data, odp_actions->size);
2622 if (facet->rule != new_rule) {
2623 COVERAGE_INC(facet_changed_rule);
2624 list_remove(&facet->list_node);
2625 list_push_back(&new_rule->facets, &facet->list_node);
2626 facet->rule = new_rule;
2627 facet->used = new_rule->up.created;
2628 facet->rs_used = facet->used;
2631 ofpbuf_delete(odp_actions);
2636 /* Updates 'facet''s used time. Caller is responsible for calling
2637 * facet_push_stats() to update the flows which 'facet' resubmits into. */
2639 facet_update_time(struct ofproto_dpif *ofproto, struct facet *facet,
2642 if (used > facet->used) {
2644 if (used > facet->rule->used) {
2645 facet->rule->used = used;
2647 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
2651 /* Folds the statistics from 'stats' into the counters in 'facet'.
2653 * Because of the meaning of a facet's counters, it only makes sense to do this
2654 * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
2655 * packet that was sent by hand or if it represents statistics that have been
2656 * cleared out of the datapath. */
2658 facet_update_stats(struct ofproto_dpif *ofproto, struct facet *facet,
2659 const struct dpif_flow_stats *stats)
2661 if (stats->n_packets || stats->used > facet->used) {
2662 facet_update_time(ofproto, facet, stats->used);
2663 facet->packet_count += stats->n_packets;
2664 facet->byte_count += stats->n_bytes;
2665 facet_push_stats(facet);
2666 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
2671 facet_reset_counters(struct facet *facet)
2673 facet->packet_count = 0;
2674 facet->byte_count = 0;
2675 facet->rs_packet_count = 0;
2676 facet->rs_byte_count = 0;
2677 facet->accounted_bytes = 0;
2681 facet_push_stats(struct facet *facet)
2683 uint64_t rs_packets, rs_bytes;
2685 assert(facet->packet_count >= facet->rs_packet_count);
2686 assert(facet->byte_count >= facet->rs_byte_count);
2687 assert(facet->used >= facet->rs_used);
2689 rs_packets = facet->packet_count - facet->rs_packet_count;
2690 rs_bytes = facet->byte_count - facet->rs_byte_count;
2692 if (rs_packets || rs_bytes || facet->used > facet->rs_used) {
2693 facet->rs_packet_count = facet->packet_count;
2694 facet->rs_byte_count = facet->byte_count;
2695 facet->rs_used = facet->used;
2697 flow_push_stats(facet->rule, &facet->flow,
2698 rs_packets, rs_bytes, facet->used);
2702 struct ofproto_push {
2703 struct action_xlate_ctx ctx;
2710 push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
2712 struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
2715 rule->packet_count += push->packets;
2716 rule->byte_count += push->bytes;
2717 rule->used = MAX(push->used, rule->used);
2721 /* Pushes flow statistics to the rules which 'flow' resubmits into given
2722 * 'rule''s actions. */
2724 flow_push_stats(const struct rule_dpif *rule,
2725 struct flow *flow, uint64_t packets, uint64_t bytes,
2728 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2729 struct ofproto_push push;
2731 push.packets = packets;
2735 action_xlate_ctx_init(&push.ctx, ofproto, flow, NULL);
2736 push.ctx.resubmit_hook = push_resubmit;
2737 ofpbuf_delete(xlate_actions(&push.ctx,
2738 rule->up.actions, rule->up.n_actions));
2743 static struct rule_dpif *
2744 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
2747 if (table_id >= N_TABLES) {
2751 return rule_dpif_cast(rule_from_cls_rule(
2752 classifier_lookup(&ofproto->up.tables[table_id],
2757 complete_operation(struct rule_dpif *rule)
2759 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2761 rule_invalidate(rule);
2763 struct dpif_completion *c = xmalloc(sizeof *c);
2764 c->op = rule->up.pending;
2765 list_push_back(&ofproto->completions, &c->list_node);
2767 ofoperation_complete(rule->up.pending, 0);
2771 static struct rule *
2774 struct rule_dpif *rule = xmalloc(sizeof *rule);
2779 rule_dealloc(struct rule *rule_)
2781 struct rule_dpif *rule = rule_dpif_cast(rule_);
2786 rule_construct(struct rule *rule_)
2788 struct rule_dpif *rule = rule_dpif_cast(rule_);
2789 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2790 struct rule_dpif *victim;
2794 error = validate_actions(rule->up.actions, rule->up.n_actions,
2795 &rule->up.cr.flow, ofproto->max_ports);
2800 rule->used = rule->up.created;
2801 rule->packet_count = 0;
2802 rule->byte_count = 0;
2804 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
2805 if (victim && !list_is_empty(&victim->facets)) {
2806 struct facet *facet;
2808 rule->facets = victim->facets;
2809 list_moved(&rule->facets);
2810 LIST_FOR_EACH (facet, list_node, &rule->facets) {
2811 /* XXX: We're only clearing our local counters here. It's possible
2812 * that quite a few packets are unaccounted for in the datapath
2813 * statistics. These will be accounted to the new rule instead of
2814 * cleared as required. This could be fixed by clearing out the
2815 * datapath statistics for this facet, but currently it doesn't
2817 facet_reset_counters(facet);
2821 /* Must avoid list_moved() in this case. */
2822 list_init(&rule->facets);
2825 table_id = rule->up.table_id;
2826 rule->tag = (victim ? victim->tag
2828 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
2829 ofproto->tables[table_id].basis));
2831 complete_operation(rule);
2836 rule_destruct(struct rule *rule_)
2838 struct rule_dpif *rule = rule_dpif_cast(rule_);
2839 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2840 struct facet *facet, *next_facet;
2842 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
2843 facet_revalidate(ofproto, facet);
2846 complete_operation(rule);
2850 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
2852 struct rule_dpif *rule = rule_dpif_cast(rule_);
2853 struct facet *facet;
2855 /* Start from historical data for 'rule' itself that are no longer tracked
2856 * in facets. This counts, for example, facets that have expired. */
2857 *packets = rule->packet_count;
2858 *bytes = rule->byte_count;
2860 /* Add any statistics that are tracked by facets. This includes
2861 * statistical data recently updated by ofproto_update_stats() as well as
2862 * stats for packets that were executed "by hand" via dpif_execute(). */
2863 LIST_FOR_EACH (facet, list_node, &rule->facets) {
2864 *packets += facet->packet_count;
2865 *bytes += facet->byte_count;
2870 rule_execute(struct rule *rule_, struct flow *flow, struct ofpbuf *packet)
2872 struct rule_dpif *rule = rule_dpif_cast(rule_);
2873 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2874 struct action_xlate_ctx ctx;
2875 struct ofpbuf *odp_actions;
2876 struct facet *facet;
2879 /* First look for a related facet. If we find one, account it to that. */
2880 facet = facet_lookup_valid(ofproto, flow);
2881 if (facet && facet->rule == rule) {
2882 facet_execute(ofproto, facet, packet);
2886 /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
2887 * create a new facet for it and use that. */
2888 if (rule_dpif_lookup(ofproto, flow, 0) == rule) {
2889 facet = facet_create(rule, flow, packet);
2890 facet_execute(ofproto, facet, packet);
2891 facet_install(ofproto, facet, true);
2895 /* We can't account anything to a facet. If we were to try, then that
2896 * facet would have a non-matching rule, busting our invariants. */
2897 action_xlate_ctx_init(&ctx, ofproto, flow, packet);
2898 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
2899 size = packet->size;
2900 if (execute_odp_actions(ofproto, flow, odp_actions->data,
2901 odp_actions->size, packet)) {
2902 rule->used = time_msec();
2903 rule->packet_count++;
2904 rule->byte_count += size;
2905 flow_push_stats(rule, flow, 1, size, rule->used);
2907 ofpbuf_delete(odp_actions);
2913 rule_modify_actions(struct rule *rule_)
2915 struct rule_dpif *rule = rule_dpif_cast(rule_);
2916 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
2919 error = validate_actions(rule->up.actions, rule->up.n_actions,
2920 &rule->up.cr.flow, ofproto->max_ports);
2922 ofoperation_complete(rule->up.pending, error);
2926 complete_operation(rule);
2929 /* Sends 'packet' out of port 'odp_port' within 'ofproto'.
2930 * Returns 0 if successful, otherwise a positive errno value. */
2932 send_packet(struct ofproto_dpif *ofproto, uint32_t odp_port,
2933 const struct ofpbuf *packet)
2935 struct ofpbuf key, odp_actions;
2936 struct odputil_keybuf keybuf;
2940 flow_extract((struct ofpbuf *) packet, 0, 0, &flow);
2941 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
2942 odp_flow_key_from_flow(&key, &flow);
2944 ofpbuf_init(&odp_actions, 32);
2945 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
2947 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
2948 error = dpif_execute(ofproto->dpif,
2950 odp_actions.data, odp_actions.size,
2952 ofpbuf_uninit(&odp_actions);
2955 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
2956 ofproto->up.name, odp_port, strerror(error));
2961 /* OpenFlow to datapath action translation. */
2963 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
2964 struct action_xlate_ctx *ctx);
2965 static void xlate_normal(struct action_xlate_ctx *);
2967 /* Compose SAMPLE action for sFlow. */
2969 compose_sflow_action(const struct ofproto_dpif *ofproto,
2970 struct ofpbuf *odp_actions,
2971 const struct flow *flow,
2974 uint32_t port_ifindex;
2975 uint32_t probability;
2976 struct user_action_cookie *cookie;
2977 size_t sample_offset, actions_offset;
2978 int user_cookie_offset, n_output;
2980 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
2984 if (odp_port == OVSP_NONE) {
2988 port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
2992 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
2994 /* Number of packets out of UINT_MAX to sample. */
2995 probability = dpif_sflow_get_probability(ofproto->sflow);
2996 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
2998 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
3000 cookie = nl_msg_put_unspec_uninit(odp_actions, OVS_ACTION_ATTR_USERSPACE,
3002 cookie->type = USER_ACTION_COOKIE_SFLOW;
3003 cookie->data = port_ifindex;
3004 cookie->n_output = n_output;
3005 cookie->vlan_tci = 0;
3006 user_cookie_offset = (char *) cookie - (char *) odp_actions->data;
3008 nl_msg_end_nested(odp_actions, actions_offset);
3009 nl_msg_end_nested(odp_actions, sample_offset);
3010 return user_cookie_offset;
3013 /* SAMPLE action must be first action in any given list of actions.
3014 * At this point we do not have all information required to build it. So try to
3015 * build sample action as complete as possible. */
3017 add_sflow_action(struct action_xlate_ctx *ctx)
3019 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
3021 &ctx->flow, OVSP_NONE);
3022 ctx->sflow_odp_port = 0;
3023 ctx->sflow_n_outputs = 0;
3026 /* Fix SAMPLE action according to data collected while composing ODP actions.
3027 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
3028 * USERSPACE action's user-cookie which is required for sflow. */
3030 fix_sflow_action(struct action_xlate_ctx *ctx)
3032 const struct flow *base = &ctx->base_flow;
3033 struct user_action_cookie *cookie;
3035 if (!ctx->user_cookie_offset) {
3039 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
3041 assert(cookie != NULL);
3042 assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
3044 if (ctx->sflow_n_outputs) {
3045 cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
3046 ctx->sflow_odp_port);
3048 if (ctx->sflow_n_outputs >= 255) {
3049 cookie->n_output = 255;
3051 cookie->n_output = ctx->sflow_n_outputs;
3053 cookie->vlan_tci = base->vlan_tci;
3057 commit_vlan_tci(struct action_xlate_ctx *ctx, ovs_be16 vlan_tci)
3059 struct flow *base = &ctx->base_flow;
3060 struct ofpbuf *odp_actions = ctx->odp_actions;
3062 if (base->vlan_tci != vlan_tci) {
3063 if (!(vlan_tci & htons(VLAN_CFI))) {
3064 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3066 if (base->vlan_tci != htons(0)) {
3067 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3069 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3070 vlan_tci & ~htons(VLAN_CFI));
3072 base->vlan_tci = vlan_tci;
3077 commit_odp_actions(struct action_xlate_ctx *ctx)
3079 const struct flow *flow = &ctx->flow;
3080 struct flow *base = &ctx->base_flow;
3081 struct ofpbuf *odp_actions = ctx->odp_actions;
3083 if (base->tun_id != flow->tun_id) {
3084 nl_msg_put_be64(odp_actions, OVS_ACTION_ATTR_SET_TUNNEL, flow->tun_id);
3085 base->tun_id = flow->tun_id;
3088 if (base->nw_src != flow->nw_src) {
3089 nl_msg_put_be32(odp_actions, OVS_ACTION_ATTR_SET_NW_SRC, flow->nw_src);
3090 base->nw_src = flow->nw_src;
3093 if (base->nw_dst != flow->nw_dst) {
3094 nl_msg_put_be32(odp_actions, OVS_ACTION_ATTR_SET_NW_DST, flow->nw_dst);
3095 base->nw_dst = flow->nw_dst;
3098 if (base->nw_tos != flow->nw_tos) {
3099 nl_msg_put_u8(odp_actions, OVS_ACTION_ATTR_SET_NW_TOS, flow->nw_tos);
3100 base->nw_tos = flow->nw_tos;
3103 commit_vlan_tci(ctx, flow->vlan_tci);
3105 if (base->tp_src != flow->tp_src) {
3106 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_SET_TP_SRC, flow->tp_src);
3107 base->tp_src = flow->tp_src;
3110 if (base->tp_dst != flow->tp_dst) {
3111 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_SET_TP_DST, flow->tp_dst);
3112 base->tp_dst = flow->tp_dst;
3115 if (!eth_addr_equals(base->dl_src, flow->dl_src)) {
3116 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_SET_DL_SRC,
3117 flow->dl_src, ETH_ADDR_LEN);
3118 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3121 if (!eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3122 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_SET_DL_DST,
3123 flow->dl_dst, ETH_ADDR_LEN);
3124 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3127 if (ctx->base_priority != ctx->priority) {
3128 if (ctx->priority) {
3129 nl_msg_put_u32(odp_actions, OVS_ACTION_ATTR_SET_PRIORITY,
3132 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_PRIORITY);
3134 ctx->base_priority = ctx->priority;
3139 compose_output_action(struct action_xlate_ctx *ctx, uint16_t odp_port)
3141 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
3142 ctx->sflow_odp_port = odp_port;
3143 ctx->sflow_n_outputs++;
3147 add_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
3149 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
3150 uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
3153 if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)) {
3154 /* Forwarding disabled on port. */
3159 * We don't have an ofport record for this port, but it doesn't hurt to
3160 * allow forwarding to it anyhow. Maybe such a port will appear later
3161 * and we're pre-populating the flow table.
3165 commit_odp_actions(ctx);
3166 compose_output_action(ctx, odp_port);
3167 ctx->nf_output_iface = ofp_port;
3171 xlate_table_action(struct action_xlate_ctx *ctx,
3172 uint16_t in_port, uint8_t table_id)
3174 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
3175 struct ofproto_dpif *ofproto = ctx->ofproto;
3176 struct rule_dpif *rule;
3177 uint16_t old_in_port;
3178 uint8_t old_table_id;
3180 old_table_id = ctx->table_id;
3181 ctx->table_id = table_id;
3183 /* Look up a flow with 'in_port' as the input port. */
3184 old_in_port = ctx->flow.in_port;
3185 ctx->flow.in_port = in_port;
3186 rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
3189 if (table_id > 0 && table_id < N_TABLES) {
3190 struct table_dpif *table = &ofproto->tables[table_id];
3191 if (table->other_table) {
3194 : rule_calculate_tag(&ctx->flow,
3195 &table->other_table->wc,
3200 /* Restore the original input port. Otherwise OFPP_NORMAL and
3201 * OFPP_IN_PORT will have surprising behavior. */
3202 ctx->flow.in_port = old_in_port;
3204 if (ctx->resubmit_hook) {
3205 ctx->resubmit_hook(ctx, rule);
3210 do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
3214 ctx->table_id = old_table_id;
3216 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
3218 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
3219 MAX_RESUBMIT_RECURSION);
3224 xlate_resubmit_table(struct action_xlate_ctx *ctx,
3225 const struct nx_action_resubmit *nar)
3230 in_port = (nar->in_port == htons(OFPP_IN_PORT)
3232 : ntohs(nar->in_port));
3233 table_id = nar->table == 255 ? ctx->table_id : nar->table;
3235 xlate_table_action(ctx, in_port, table_id);
3239 flood_packets(struct action_xlate_ctx *ctx, ovs_be32 mask)
3241 struct ofport_dpif *ofport;
3243 commit_odp_actions(ctx);
3244 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
3245 uint16_t ofp_port = ofport->up.ofp_port;
3246 if (ofp_port != ctx->flow.in_port && !(ofport->up.opp.config & mask)) {
3247 compose_output_action(ctx, ofport->odp_port);
3251 ctx->nf_output_iface = NF_OUT_FLOOD;
3255 compose_controller_action(struct ofpbuf *odp_actions, int len)
3257 struct user_action_cookie cookie;
3259 cookie.type = USER_ACTION_COOKIE_CONTROLLER;
3261 cookie.n_output = 0;
3262 cookie.vlan_tci = 0;
3264 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_USERSPACE,
3265 &cookie, sizeof(cookie));
3269 xlate_output_action__(struct action_xlate_ctx *ctx,
3270 uint16_t port, uint16_t max_len)
3272 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
3274 ctx->nf_output_iface = NF_OUT_DROP;
3278 add_output_action(ctx, ctx->flow.in_port);
3281 xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id);
3287 flood_packets(ctx, htonl(OFPPC_NO_FLOOD));
3290 flood_packets(ctx, htonl(0));
3292 case OFPP_CONTROLLER:
3293 commit_odp_actions(ctx);
3294 compose_controller_action(ctx->odp_actions, max_len);
3297 add_output_action(ctx, OFPP_LOCAL);
3302 if (port != ctx->flow.in_port) {
3303 add_output_action(ctx, port);
3308 if (prev_nf_output_iface == NF_OUT_FLOOD) {
3309 ctx->nf_output_iface = NF_OUT_FLOOD;
3310 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
3311 ctx->nf_output_iface = prev_nf_output_iface;
3312 } else if (prev_nf_output_iface != NF_OUT_DROP &&
3313 ctx->nf_output_iface != NF_OUT_FLOOD) {
3314 ctx->nf_output_iface = NF_OUT_MULTI;
3319 xlate_output_reg_action(struct action_xlate_ctx *ctx,
3320 const struct nx_action_output_reg *naor)
3324 ofp_port = nxm_read_field_bits(naor->src, naor->ofs_nbits, &ctx->flow);
3326 if (ofp_port <= UINT16_MAX) {
3327 xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
3332 xlate_output_action(struct action_xlate_ctx *ctx,
3333 const struct ofp_action_output *oao)
3335 xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
3339 xlate_enqueue_action(struct action_xlate_ctx *ctx,
3340 const struct ofp_action_enqueue *oae)
3342 uint16_t ofp_port, odp_port;
3343 uint32_t ctx_priority, priority;
3346 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
3349 /* Fall back to ordinary output action. */
3350 xlate_output_action__(ctx, ntohs(oae->port), 0);
3354 /* Figure out datapath output port. */
3355 ofp_port = ntohs(oae->port);
3356 if (ofp_port == OFPP_IN_PORT) {
3357 ofp_port = ctx->flow.in_port;
3359 odp_port = ofp_port_to_odp_port(ofp_port);
3361 /* Add datapath actions. */
3362 ctx_priority = ctx->priority;
3363 ctx->priority = priority;
3364 add_output_action(ctx, odp_port);
3365 ctx->priority = ctx_priority;
3367 /* Update NetFlow output port. */
3368 if (ctx->nf_output_iface == NF_OUT_DROP) {
3369 ctx->nf_output_iface = odp_port;
3370 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
3371 ctx->nf_output_iface = NF_OUT_MULTI;
3376 xlate_set_queue_action(struct action_xlate_ctx *ctx,
3377 const struct nx_action_set_queue *nasq)
3382 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
3385 /* Couldn't translate queue to a priority, so ignore. A warning
3386 * has already been logged. */
3390 ctx->priority = priority;
3393 struct xlate_reg_state {
3399 xlate_autopath(struct action_xlate_ctx *ctx,
3400 const struct nx_action_autopath *naa)
3402 uint16_t ofp_port = ntohl(naa->id);
3403 struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
3405 if (!port || !port->bundle) {
3406 ofp_port = OFPP_NONE;
3407 } else if (port->bundle->bond) {
3408 /* Autopath does not support VLAN hashing. */
3409 struct ofport_dpif *slave = bond_choose_output_slave(
3410 port->bundle->bond, &ctx->flow, 0, &ctx->tags);
3412 ofp_port = slave->up.ofp_port;
3415 autopath_execute(naa, &ctx->flow, ofp_port);
3419 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
3421 struct ofproto_dpif *ofproto = ofproto_;
3422 struct ofport_dpif *port;
3432 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
3435 port = get_ofp_port(ofproto, ofp_port);
3436 return port ? port->may_enable : false;
3441 xlate_learn_action(struct action_xlate_ctx *ctx,
3442 const struct nx_action_learn *learn)
3444 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
3445 struct ofputil_flow_mod fm;
3448 learn_execute(learn, &ctx->flow, &fm);
3450 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
3451 if (error && !VLOG_DROP_WARN(&rl)) {
3452 char *msg = ofputil_error_to_string(error);
3453 VLOG_WARN("learning action failed to modify flow table (%s)", msg);
3461 do_xlate_actions(const union ofp_action *in, size_t n_in,
3462 struct action_xlate_ctx *ctx)
3464 const struct ofport_dpif *port;
3465 const union ofp_action *ia;
3468 port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
3470 && port->up.opp.config & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
3471 port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
3472 ? htonl(OFPPC_NO_RECV_STP)
3473 : htonl(OFPPC_NO_RECV))) {
3474 /* Drop this flow. */
3478 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
3479 const struct ofp_action_dl_addr *oada;
3480 const struct nx_action_resubmit *nar;
3481 const struct nx_action_set_tunnel *nast;
3482 const struct nx_action_set_queue *nasq;
3483 const struct nx_action_multipath *nam;
3484 const struct nx_action_autopath *naa;
3485 const struct nx_action_bundle *nab;
3486 const struct nx_action_output_reg *naor;
3487 enum ofputil_action_code code;
3490 code = ofputil_decode_action_unsafe(ia);
3492 case OFPUTIL_OFPAT_OUTPUT:
3493 xlate_output_action(ctx, &ia->output);
3496 case OFPUTIL_OFPAT_SET_VLAN_VID:
3497 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
3498 ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
3501 case OFPUTIL_OFPAT_SET_VLAN_PCP:
3502 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
3503 ctx->flow.vlan_tci |= htons(
3504 (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
3507 case OFPUTIL_OFPAT_STRIP_VLAN:
3508 ctx->flow.vlan_tci = htons(0);
3511 case OFPUTIL_OFPAT_SET_DL_SRC:
3512 oada = ((struct ofp_action_dl_addr *) ia);
3513 memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
3516 case OFPUTIL_OFPAT_SET_DL_DST:
3517 oada = ((struct ofp_action_dl_addr *) ia);
3518 memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
3521 case OFPUTIL_OFPAT_SET_NW_SRC:
3522 ctx->flow.nw_src = ia->nw_addr.nw_addr;
3525 case OFPUTIL_OFPAT_SET_NW_DST:
3526 ctx->flow.nw_dst = ia->nw_addr.nw_addr;
3529 case OFPUTIL_OFPAT_SET_NW_TOS:
3530 ctx->flow.nw_tos = ia->nw_tos.nw_tos & IP_DSCP_MASK;
3533 case OFPUTIL_OFPAT_SET_TP_SRC:
3534 ctx->flow.tp_src = ia->tp_port.tp_port;
3537 case OFPUTIL_OFPAT_SET_TP_DST:
3538 ctx->flow.tp_dst = ia->tp_port.tp_port;
3541 case OFPUTIL_OFPAT_ENQUEUE:
3542 xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
3545 case OFPUTIL_NXAST_RESUBMIT:
3546 nar = (const struct nx_action_resubmit *) ia;
3547 xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
3550 case OFPUTIL_NXAST_RESUBMIT_TABLE:
3551 xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
3554 case OFPUTIL_NXAST_SET_TUNNEL:
3555 nast = (const struct nx_action_set_tunnel *) ia;
3556 tun_id = htonll(ntohl(nast->tun_id));
3557 ctx->flow.tun_id = tun_id;
3560 case OFPUTIL_NXAST_SET_QUEUE:
3561 nasq = (const struct nx_action_set_queue *) ia;
3562 xlate_set_queue_action(ctx, nasq);
3565 case OFPUTIL_NXAST_POP_QUEUE:
3569 case OFPUTIL_NXAST_REG_MOVE:
3570 nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
3574 case OFPUTIL_NXAST_REG_LOAD:
3575 nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
3579 case OFPUTIL_NXAST_NOTE:
3580 /* Nothing to do. */
3583 case OFPUTIL_NXAST_SET_TUNNEL64:
3584 tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
3585 ctx->flow.tun_id = tun_id;
3588 case OFPUTIL_NXAST_MULTIPATH:
3589 nam = (const struct nx_action_multipath *) ia;
3590 multipath_execute(nam, &ctx->flow);
3593 case OFPUTIL_NXAST_AUTOPATH:
3594 naa = (const struct nx_action_autopath *) ia;
3595 xlate_autopath(ctx, naa);
3598 case OFPUTIL_NXAST_BUNDLE:
3599 ctx->ofproto->has_bundle_action = true;
3600 nab = (const struct nx_action_bundle *) ia;
3601 xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
3606 case OFPUTIL_NXAST_BUNDLE_LOAD:
3607 ctx->ofproto->has_bundle_action = true;
3608 nab = (const struct nx_action_bundle *) ia;
3609 bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
3613 case OFPUTIL_NXAST_OUTPUT_REG:
3614 naor = (const struct nx_action_output_reg *) ia;
3615 xlate_output_reg_action(ctx, naor);
3618 case OFPUTIL_NXAST_LEARN:
3619 ctx->has_learn = true;
3620 if (ctx->may_learn) {
3621 xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
3629 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
3630 struct ofproto_dpif *ofproto, const struct flow *flow,
3631 const struct ofpbuf *packet)
3633 ctx->ofproto = ofproto;
3635 ctx->packet = packet;
3636 ctx->may_learn = packet != NULL;
3637 ctx->resubmit_hook = NULL;
3640 static struct ofpbuf *
3641 xlate_actions(struct action_xlate_ctx *ctx,
3642 const union ofp_action *in, size_t n_in)
3644 COVERAGE_INC(ofproto_dpif_xlate);
3646 ctx->odp_actions = ofpbuf_new(512);
3648 ctx->may_set_up_flow = true;
3649 ctx->has_learn = false;
3650 ctx->has_normal = false;
3651 ctx->nf_output_iface = NF_OUT_DROP;
3654 ctx->base_priority = 0;
3655 ctx->base_flow = ctx->flow;
3656 ctx->base_flow.tun_id = 0;
3659 if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
3660 ctx->may_set_up_flow = false;
3662 add_sflow_action(ctx);
3663 do_xlate_actions(in, n_in, ctx);
3664 fix_sflow_action(ctx);
3667 /* Check with in-band control to see if we're allowed to set up this
3669 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
3670 ctx->odp_actions->data,
3671 ctx->odp_actions->size)) {
3672 ctx->may_set_up_flow = false;
3675 return ctx->odp_actions;
3678 /* OFPP_NORMAL implementation. */
3681 struct ofport_dpif *port;
3686 struct dst builtin[32];
3688 size_t n, allocated;
3691 static void dst_set_init(struct dst_set *);
3692 static void dst_set_add(struct dst_set *, const struct dst *);
3693 static void dst_set_free(struct dst_set *);
3695 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
3697 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
3698 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
3699 * the bundle on which the packet was received, returns the VLAN to which the
3702 * Both 'vid' and the return value are in the range 0...4095. */
3704 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
3706 switch (in_bundle->vlan_mode) {
3707 case PORT_VLAN_ACCESS:
3708 return in_bundle->vlan;
3711 case PORT_VLAN_TRUNK:
3714 case PORT_VLAN_NATIVE_UNTAGGED:
3715 case PORT_VLAN_NATIVE_TAGGED:
3716 return vid ? vid : in_bundle->vlan;
3723 /* Given 'vlan', the VLAN that a packet belongs to, and
3724 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
3725 * that should be included in the 802.1Q header. (If the return value is 0,
3726 * then the 802.1Q header should only be included in the packet if there is a
3729 * Both 'vlan' and the return value are in the range 0...4095. */
3731 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
3733 switch (out_bundle->vlan_mode) {
3734 case PORT_VLAN_ACCESS:
3737 case PORT_VLAN_TRUNK:
3738 case PORT_VLAN_NATIVE_TAGGED:
3741 case PORT_VLAN_NATIVE_UNTAGGED:
3742 return vlan == out_bundle->vlan ? 0 : vlan;
3750 set_dst(struct action_xlate_ctx *ctx, struct dst *dst,
3751 const struct ofbundle *in_bundle, const struct ofbundle *out_bundle)
3755 vlan = input_vid_to_vlan(in_bundle, vlan_tci_to_vid(ctx->flow.vlan_tci));
3756 dst->vid = output_vlan_to_vid(out_bundle, vlan);
3758 dst->port = (!out_bundle->bond
3759 ? ofbundle_get_a_port(out_bundle)
3760 : bond_choose_output_slave(out_bundle->bond, &ctx->flow,
3761 dst->vid, &ctx->tags));
3762 return dst->port != NULL;
3766 mirror_mask_ffs(mirror_mask_t mask)
3768 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
3773 dst_set_init(struct dst_set *set)
3775 set->dsts = set->builtin;
3777 set->allocated = ARRAY_SIZE(set->builtin);
3781 dst_set_add(struct dst_set *set, const struct dst *dst)
3783 if (set->n >= set->allocated) {
3784 size_t new_allocated;
3785 struct dst *new_dsts;
3787 new_allocated = set->allocated * 2;
3788 new_dsts = xmalloc(new_allocated * sizeof *new_dsts);
3789 memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts);
3793 set->dsts = new_dsts;
3794 set->allocated = new_allocated;
3796 set->dsts[set->n++] = *dst;
3800 dst_set_free(struct dst_set *set)
3802 if (set->dsts != set->builtin) {
3808 dst_is_duplicate(const struct dst_set *set, const struct dst *test)
3811 for (i = 0; i < set->n; i++) {
3812 if (set->dsts[i].vid == test->vid
3813 && set->dsts[i].port == test->port) {
3821 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
3823 return (bundle->vlan_mode != PORT_VLAN_ACCESS
3824 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
3828 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
3830 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
3833 /* Returns an arbitrary interface within 'bundle'. */
3834 static struct ofport_dpif *
3835 ofbundle_get_a_port(const struct ofbundle *bundle)
3837 return CONTAINER_OF(list_front(&bundle->ports),
3838 struct ofport_dpif, bundle_node);
3842 compose_dsts(struct action_xlate_ctx *ctx, uint16_t vlan,
3843 const struct ofbundle *in_bundle,
3844 const struct ofbundle *out_bundle, struct dst_set *set)
3848 if (out_bundle == OFBUNDLE_FLOOD) {
3849 struct ofbundle *bundle;
3851 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
3852 if (bundle != in_bundle
3853 && ofbundle_includes_vlan(bundle, vlan)
3854 && bundle->floodable
3855 && !bundle->mirror_out
3856 && set_dst(ctx, &dst, in_bundle, bundle)) {
3857 dst_set_add(set, &dst);
3860 ctx->nf_output_iface = NF_OUT_FLOOD;
3861 } else if (out_bundle && set_dst(ctx, &dst, in_bundle, out_bundle)) {
3862 dst_set_add(set, &dst);
3863 ctx->nf_output_iface = dst.port->odp_port;
3868 vlan_is_mirrored(const struct ofmirror *m, int vlan)
3870 return !m->vlans || bitmap_is_set(m->vlans, vlan);
3873 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
3874 * to a VLAN. In general most packets may be mirrored but we want to drop
3875 * protocols that may confuse switches. */
3877 eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
3879 /* If you change this function's behavior, please update corresponding
3880 * documentation in vswitch.xml at the same time. */
3881 if (dst[0] != 0x01) {
3882 /* All the currently banned MACs happen to start with 01 currently, so
3883 * this is a quick way to eliminate most of the good ones. */
3885 if (eth_addr_is_reserved(dst)) {
3886 /* Drop STP, IEEE pause frames, and other reserved protocols
3887 * (01-80-c2-00-00-0x). */
3891 if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
3893 if ((dst[3] & 0xfe) == 0xcc &&
3894 (dst[4] & 0xfe) == 0xcc &&
3895 (dst[5] & 0xfe) == 0xcc) {
3896 /* Drop the following protocols plus others following the same
3899 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
3900 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
3901 STP Uplink Fast (01-00-0c-cd-cd-cd) */
3905 if (!(dst[3] | dst[4] | dst[5])) {
3906 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
3915 compose_mirror_dsts(struct action_xlate_ctx *ctx,
3916 uint16_t vlan, const struct ofbundle *in_bundle,
3917 struct dst_set *set)
3919 struct ofproto_dpif *ofproto = ctx->ofproto;
3920 mirror_mask_t mirrors;
3924 mirrors = in_bundle->src_mirrors;
3925 for (i = 0; i < set->n; i++) {
3926 mirrors |= set->dsts[i].port->bundle->dst_mirrors;
3933 flow_vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
3935 struct ofmirror *m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
3936 if (vlan_is_mirrored(m, vlan)) {
3940 if (set_dst(ctx, &dst, in_bundle, m->out)
3941 && !dst_is_duplicate(set, &dst)) {
3942 dst_set_add(set, &dst);
3944 } else if (eth_dst_may_rspan(ctx->flow.dl_dst)) {
3945 struct ofbundle *bundle;
3947 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
3948 if (ofbundle_includes_vlan(bundle, m->out_vlan)
3949 && set_dst(ctx, &dst, in_bundle, bundle))
3951 /* set_dst() got dst->vid from the input packet's VLAN,
3952 * not from m->out_vlan, so recompute it. */
3953 dst.vid = output_vlan_to_vid(bundle, m->out_vlan);
3955 if (dst_is_duplicate(set, &dst)) {
3959 if (bundle == in_bundle && dst.vid == flow_vid) {
3960 /* Don't send out input port on same VLAN. */
3963 dst_set_add(set, &dst);
3968 mirrors &= mirrors - 1;
3973 compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan,
3974 const struct ofbundle *in_bundle,
3975 const struct ofbundle *out_bundle)
3977 uint16_t initial_vid, cur_vid;
3978 const struct dst *dst;
3982 compose_dsts(ctx, vlan, in_bundle, out_bundle, &set);
3983 compose_mirror_dsts(ctx, vlan, in_bundle, &set);
3989 /* Output all the packets we can without having to change the VLAN. */
3990 commit_odp_actions(ctx);
3991 initial_vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
3992 for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
3993 if (dst->vid != initial_vid) {
3996 compose_output_action(ctx, dst->port->odp_port);
3999 /* Then output the rest. */
4000 cur_vid = initial_vid;
4001 for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
4002 if (dst->vid == initial_vid) {
4005 if (dst->vid != cur_vid) {
4008 tci = htons(dst->vid);
4009 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
4011 tci |= htons(VLAN_CFI);
4013 commit_vlan_tci(ctx, tci);
4017 compose_output_action(ctx, dst->port->odp_port);
4023 /* Returns the effective vlan of a packet, taking into account both the
4024 * 802.1Q header and implicitly tagged ports. A value of 0 indicates that
4025 * the packet is untagged and -1 indicates it has an invalid header and
4026 * should be dropped. */
4028 flow_get_vlan(struct ofproto_dpif *ofproto, const struct flow *flow,
4029 struct ofbundle *in_bundle, bool have_packet)
4031 int vlan = vlan_tci_to_vid(flow->vlan_tci);
4033 if (in_bundle->vlan_mode == PORT_VLAN_ACCESS) {
4034 /* Drop tagged packet on access port */
4036 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4037 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
4038 "packet received on port %s configured with "
4039 "implicit VLAN %"PRIu16,
4040 ofproto->up.name, vlan,
4041 in_bundle->name, in_bundle->vlan);
4044 } else if (ofbundle_includes_vlan(in_bundle, vlan)) {
4047 /* Drop packets from a VLAN not member of the trunk */
4049 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4050 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
4051 "packet received on port %s not configured for "
4053 ofproto->up.name, vlan, in_bundle->name, vlan);
4058 if (in_bundle->vlan_mode != PORT_VLAN_TRUNK) {
4059 return in_bundle->vlan;
4061 return ofbundle_includes_vlan(in_bundle, 0) ? 0 : -1;
4066 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
4067 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
4068 * indicate this; newer upstream kernels use gratuitous ARP requests. */
4070 is_gratuitous_arp(const struct flow *flow)
4072 return (flow->dl_type == htons(ETH_TYPE_ARP)
4073 && eth_addr_is_broadcast(flow->dl_dst)
4074 && (flow->nw_proto == ARP_OP_REPLY
4075 || (flow->nw_proto == ARP_OP_REQUEST
4076 && flow->nw_src == flow->nw_dst)));
4080 update_learning_table(struct ofproto_dpif *ofproto,
4081 const struct flow *flow, int vlan,
4082 struct ofbundle *in_bundle)
4084 struct mac_entry *mac;
4086 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
4090 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
4091 if (is_gratuitous_arp(flow)) {
4092 /* We don't want to learn from gratuitous ARP packets that are
4093 * reflected back over bond slaves so we lock the learning table. */
4094 if (!in_bundle->bond) {
4095 mac_entry_set_grat_arp_lock(mac);
4096 } else if (mac_entry_is_grat_arp_locked(mac)) {
4101 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
4102 /* The log messages here could actually be useful in debugging,
4103 * so keep the rate limit relatively high. */
4104 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
4105 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
4106 "on port %s in VLAN %d",
4107 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
4108 in_bundle->name, vlan);
4110 mac->port.p = in_bundle;
4111 tag_set_add(&ofproto->revalidate_set,
4112 mac_learning_changed(ofproto->ml, mac));
4116 /* Determines whether packets in 'flow' within 'br' should be forwarded or
4117 * dropped. Returns true if they may be forwarded, false if they should be
4120 * If 'have_packet' is true, it indicates that the caller is processing a
4121 * received packet. If 'have_packet' is false, then the caller is just
4122 * revalidating an existing flow because configuration has changed. Either
4123 * way, 'have_packet' only affects logging (there is no point in logging errors
4124 * during revalidation).
4126 * Sets '*in_portp' to the input port. This will be a null pointer if
4127 * flow->in_port does not designate a known input port (in which case
4128 * is_admissible() returns false).
4130 * When returning true, sets '*vlanp' to the effective VLAN of the input
4131 * packet, as returned by flow_get_vlan().
4133 * May also add tags to '*tags', although the current implementation only does
4134 * so in one special case.
4137 is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
4139 tag_type *tags, int *vlanp, struct ofbundle **in_bundlep)
4141 struct ofport_dpif *in_port;
4142 struct ofbundle *in_bundle;
4145 /* Find the port and bundle for the received packet. */
4146 in_port = get_ofp_port(ofproto, flow->in_port);
4147 *in_bundlep = in_bundle = in_port ? in_port->bundle : NULL;
4148 if (!in_port || !in_bundle) {
4149 /* No interface? Something fishy... */
4151 /* Odd. A few possible reasons here:
4153 * - We deleted a port but there are still a few packets queued up
4156 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
4157 * we don't know about.
4159 * - Packet arrived on the local port but the local port is not
4162 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4164 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
4166 ofproto->up.name, flow->in_port);
4171 *vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet);
4176 /* Drop frames for reserved multicast addresses
4177 * only if forward_bpdu option is absent. */
4178 if (eth_addr_is_reserved(flow->dl_dst) &&
4179 !ofproto->up.forward_bpdu) {
4183 /* Drop frames on bundles reserved for mirroring. */
4184 if (in_bundle->mirror_out) {
4186 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4187 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
4188 "%s, which is reserved exclusively for mirroring",
4189 ofproto->up.name, in_bundle->name);
4194 if (in_bundle->bond) {
4195 struct mac_entry *mac;
4197 switch (bond_check_admissibility(in_bundle->bond, in_port,
4198 flow->dl_dst, tags)) {
4205 case BV_DROP_IF_MOVED:
4206 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
4207 if (mac && mac->port.p != in_bundle &&
4208 (!is_gratuitous_arp(flow)
4209 || mac_entry_is_grat_arp_locked(mac))) {
4220 xlate_normal(struct action_xlate_ctx *ctx)
4222 struct ofbundle *in_bundle;
4223 struct ofbundle *out_bundle;
4224 struct mac_entry *mac;
4227 ctx->has_normal = true;
4229 /* Check whether we should drop packets in this flow. */
4230 if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL,
4231 &ctx->tags, &vlan, &in_bundle)) {
4236 /* Learn source MAC. */
4237 if (ctx->may_learn) {
4238 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
4241 /* Determine output bundle. */
4242 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
4245 out_bundle = mac->port.p;
4246 } else if (!ctx->packet && !eth_addr_is_multicast(ctx->flow.dl_dst)) {
4247 /* If we are revalidating but don't have a learning entry then eject
4248 * the flow. Installing a flow that floods packets opens up a window
4249 * of time where we could learn from a packet reflected on a bond and
4250 * blackhole packets before the learning table is updated to reflect
4251 * the correct port. */
4252 ctx->may_set_up_flow = false;
4255 out_bundle = OFBUNDLE_FLOOD;
4258 /* Don't send packets out their input bundles. */
4259 if (in_bundle == out_bundle) {
4265 compose_actions(ctx, vlan, in_bundle, out_bundle);
4269 /* Optimized flow revalidation.
4271 * It's a difficult problem, in general, to tell which facets need to have
4272 * their actions recalculated whenever the OpenFlow flow table changes. We
4273 * don't try to solve that general problem: for most kinds of OpenFlow flow
4274 * table changes, we recalculate the actions for every facet. This is
4275 * relatively expensive, but it's good enough if the OpenFlow flow table
4276 * doesn't change very often.
4278 * However, we can expect one particular kind of OpenFlow flow table change to
4279 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
4280 * of CPU on revalidating every facet whenever MAC learning modifies the flow
4281 * table, we add a special case that applies to flow tables in which every rule
4282 * has the same form (that is, the same wildcards), except that the table is
4283 * also allowed to have a single "catch-all" flow that matches all packets. We
4284 * optimize this case by tagging all of the facets that resubmit into the table
4285 * and invalidating the same tag whenever a flow changes in that table. The
4286 * end result is that we revalidate just the facets that need it (and sometimes
4287 * a few more, but not all of the facets or even all of the facets that
4288 * resubmit to the table modified by MAC learning). */
4290 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
4291 * into an OpenFlow table with the given 'basis'. */
4293 rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
4296 if (flow_wildcards_is_catchall(wc)) {
4299 struct flow tag_flow = *flow;
4300 flow_zero_wildcards(&tag_flow, wc);
4301 return tag_create_deterministic(flow_hash(&tag_flow, secret));
4305 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
4306 * taggability of that table.
4308 * This function must be called after *each* change to a flow table. If you
4309 * skip calling it on some changes then the pointer comparisons at the end can
4310 * be invalid if you get unlucky. For example, if a flow removal causes a
4311 * cls_table to be destroyed and then a flow insertion causes a cls_table with
4312 * different wildcards to be created with the same address, then this function
4313 * will incorrectly skip revalidation. */
4315 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
4317 struct table_dpif *table = &ofproto->tables[table_id];
4318 const struct classifier *cls = &ofproto->up.tables[table_id];
4319 struct cls_table *catchall, *other;
4320 struct cls_table *t;
4322 catchall = other = NULL;
4324 switch (hmap_count(&cls->tables)) {
4326 /* We could tag this OpenFlow table but it would make the logic a
4327 * little harder and it's a corner case that doesn't seem worth it
4333 HMAP_FOR_EACH (t, hmap_node, &cls->tables) {
4334 if (cls_table_is_catchall(t)) {
4336 } else if (!other) {
4339 /* Indicate that we can't tag this by setting both tables to
4340 * NULL. (We know that 'catchall' is already NULL.) */
4347 /* Can't tag this table. */
4351 if (table->catchall_table != catchall || table->other_table != other) {
4352 table->catchall_table = catchall;
4353 table->other_table = other;
4354 ofproto->need_revalidate = true;
4358 /* Given 'rule' that has changed in some way (either it is a rule being
4359 * inserted, a rule being deleted, or a rule whose actions are being
4360 * modified), marks facets for revalidation to ensure that packets will be
4361 * forwarded correctly according to the new state of the flow table.
4363 * This function must be called after *each* change to a flow table. See
4364 * the comment on table_update_taggable() for more information. */
4366 rule_invalidate(const struct rule_dpif *rule)
4368 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4370 table_update_taggable(ofproto, rule->up.table_id);
4372 if (!ofproto->need_revalidate) {
4373 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
4375 if (table->other_table && rule->tag) {
4376 tag_set_add(&ofproto->revalidate_set, rule->tag);
4378 ofproto->need_revalidate = true;
4384 get_drop_frags(struct ofproto *ofproto_)
4386 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
4389 dpif_get_drop_frags(ofproto->dpif, &drop_frags);
4394 set_drop_frags(struct ofproto *ofproto_, bool drop_frags)
4396 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
4398 dpif_set_drop_frags(ofproto->dpif, drop_frags);
4402 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
4403 const struct flow *flow,
4404 const union ofp_action *ofp_actions, size_t n_ofp_actions)
4406 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
4409 error = validate_actions(ofp_actions, n_ofp_actions, flow,
4410 ofproto->max_ports);
4412 struct odputil_keybuf keybuf;
4413 struct action_xlate_ctx ctx;
4414 struct ofpbuf *odp_actions;
4417 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4418 odp_flow_key_from_flow(&key, flow);
4420 action_xlate_ctx_init(&ctx, ofproto, flow, packet);
4421 odp_actions = xlate_actions(&ctx, ofp_actions, n_ofp_actions);
4422 dpif_execute(ofproto->dpif, key.data, key.size,
4423 odp_actions->data, odp_actions->size, packet);
4424 ofpbuf_delete(odp_actions);
4430 get_netflow_ids(const struct ofproto *ofproto_,
4431 uint8_t *engine_type, uint8_t *engine_id)
4433 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
4435 dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
4438 static struct ofproto_dpif *
4439 ofproto_dpif_lookup(const char *name)
4441 struct ofproto *ofproto = ofproto_lookup(name);
4442 return (ofproto && ofproto->ofproto_class == &ofproto_dpif_class
4443 ? ofproto_dpif_cast(ofproto)
4448 ofproto_unixctl_fdb_show(struct unixctl_conn *conn,
4449 const char *args, void *aux OVS_UNUSED)
4451 struct ds ds = DS_EMPTY_INITIALIZER;
4452 const struct ofproto_dpif *ofproto;
4453 const struct mac_entry *e;
4455 ofproto = ofproto_dpif_lookup(args);
4457 unixctl_command_reply(conn, 501, "no such bridge");
4461 ds_put_cstr(&ds, " port VLAN MAC Age\n");
4462 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
4463 struct ofbundle *bundle = e->port.p;
4464 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
4465 ofbundle_get_a_port(bundle)->odp_port,
4466 e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
4468 unixctl_command_reply(conn, 200, ds_cstr(&ds));
4472 struct ofproto_trace {
4473 struct action_xlate_ctx ctx;
4479 trace_format_rule(struct ds *result, uint8_t table_id, int level,
4480 const struct rule_dpif *rule)
4482 ds_put_char_multiple(result, '\t', level);
4484 ds_put_cstr(result, "No match\n");
4488 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
4489 table_id, ntohll(rule->up.flow_cookie));
4490 cls_rule_format(&rule->up.cr, result);
4491 ds_put_char(result, '\n');
4493 ds_put_char_multiple(result, '\t', level);
4494 ds_put_cstr(result, "OpenFlow ");
4495 ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
4496 ds_put_char(result, '\n');
4500 trace_format_flow(struct ds *result, int level, const char *title,
4501 struct ofproto_trace *trace)
4503 ds_put_char_multiple(result, '\t', level);
4504 ds_put_format(result, "%s: ", title);
4505 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
4506 ds_put_cstr(result, "unchanged");
4508 flow_format(result, &trace->ctx.flow);
4509 trace->flow = trace->ctx.flow;
4511 ds_put_char(result, '\n');
4515 trace_format_regs(struct ds *result, int level, const char *title,
4516 struct ofproto_trace *trace)
4520 ds_put_char_multiple(result, '\t', level);
4521 ds_put_format(result, "%s:", title);
4522 for (i = 0; i < FLOW_N_REGS; i++) {
4523 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
4525 ds_put_char(result, '\n');
4529 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
4531 struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
4532 struct ds *result = trace->result;
4534 ds_put_char(result, '\n');
4535 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
4536 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
4537 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
4541 ofproto_unixctl_trace(struct unixctl_conn *conn, const char *args_,
4542 void *aux OVS_UNUSED)
4544 char *dpname, *arg1, *arg2, *arg3;
4545 char *args = xstrdup(args_);
4546 char *save_ptr = NULL;
4547 struct ofproto_dpif *ofproto;
4548 struct ofpbuf odp_key;
4549 struct ofpbuf *packet;
4550 struct rule_dpif *rule;
4556 ofpbuf_init(&odp_key, 0);
4559 dpname = strtok_r(args, " ", &save_ptr);
4560 arg1 = strtok_r(NULL, " ", &save_ptr);
4561 arg2 = strtok_r(NULL, " ", &save_ptr);
4562 arg3 = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */
4563 if (dpname && arg1 && (!arg2 || !strcmp(arg2, "-generate")) && !arg3) {
4564 /* ofproto/trace dpname flow [-generate] */
4567 /* Convert string to datapath key. */
4568 ofpbuf_init(&odp_key, 0);
4569 error = odp_flow_key_from_string(arg1, &odp_key);
4571 unixctl_command_reply(conn, 501, "Bad flow syntax");
4575 /* Convert odp_key to flow. */
4576 error = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow);
4578 unixctl_command_reply(conn, 501, "Invalid flow");
4582 /* Generate a packet, if requested. */
4584 packet = ofpbuf_new(0);
4585 flow_compose(packet, &flow);
4587 } else if (dpname && arg1 && arg2 && arg3) {
4588 /* ofproto/trace dpname tun_id in_port packet */
4592 tun_id = htonll(strtoull(arg1, NULL, 0));
4593 in_port = ofp_port_to_odp_port(atoi(arg2));
4595 packet = ofpbuf_new(strlen(args) / 2);
4596 arg3 = ofpbuf_put_hex(packet, arg3, NULL);
4597 arg3 += strspn(arg3, " ");
4598 if (*arg3 != '\0') {
4599 unixctl_command_reply(conn, 501, "Trailing garbage in command");
4602 if (packet->size < ETH_HEADER_LEN) {
4603 unixctl_command_reply(conn, 501,
4604 "Packet data too short for Ethernet");
4608 ds_put_cstr(&result, "Packet: ");
4609 s = ofp_packet_to_string(packet->data, packet->size, packet->size);
4610 ds_put_cstr(&result, s);
4613 flow_extract(packet, tun_id, in_port, &flow);
4615 unixctl_command_reply(conn, 501, "Bad command syntax");
4619 ofproto = ofproto_dpif_lookup(dpname);
4621 unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
4626 ds_put_cstr(&result, "Flow: ");
4627 flow_format(&result, &flow);
4628 ds_put_char(&result, '\n');
4630 rule = rule_dpif_lookup(ofproto, &flow, 0);
4631 trace_format_rule(&result, 0, 0, rule);
4633 struct ofproto_trace trace;
4634 struct ofpbuf *odp_actions;
4636 trace.result = &result;
4638 action_xlate_ctx_init(&trace.ctx, ofproto, &flow, packet);
4639 trace.ctx.resubmit_hook = trace_resubmit;
4640 odp_actions = xlate_actions(&trace.ctx,
4641 rule->up.actions, rule->up.n_actions);
4643 ds_put_char(&result, '\n');
4644 trace_format_flow(&result, 0, "Final flow", &trace);
4645 ds_put_cstr(&result, "Datapath actions: ");
4646 format_odp_actions(&result, odp_actions->data, odp_actions->size);
4647 ofpbuf_delete(odp_actions);
4649 if (!trace.ctx.may_set_up_flow) {
4651 ds_put_cstr(&result, "\nThis flow is not cachable.");
4653 ds_put_cstr(&result, "\nThe datapath actions are incomplete--"
4654 "for complete actions, please supply a packet.");
4659 unixctl_command_reply(conn, 200, ds_cstr(&result));
4662 ds_destroy(&result);
4663 ofpbuf_delete(packet);
4664 ofpbuf_uninit(&odp_key);
4669 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED,
4670 const char *args_ OVS_UNUSED, void *aux OVS_UNUSED)
4673 unixctl_command_reply(conn, 200, NULL);
4677 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED,
4678 const char *args_ OVS_UNUSED, void *aux OVS_UNUSED)
4681 unixctl_command_reply(conn, 200, NULL);
4685 ofproto_dpif_unixctl_init(void)
4687 static bool registered;
4693 unixctl_command_register("ofproto/trace",
4694 "bridge {tun_id in_port packet | odp_flow [-generate]}",
4695 ofproto_unixctl_trace, NULL);
4696 unixctl_command_register("fdb/show", "bridge", ofproto_unixctl_fdb_show,
4698 unixctl_command_register("ofproto/clog", "", ofproto_dpif_clog, NULL);
4699 unixctl_command_register("ofproto/unclog", "", ofproto_dpif_unclog, NULL);
4702 const struct ofproto_class ofproto_dpif_class = {
4729 port_is_lacp_current,
4730 NULL, /* rule_choose_table */
4737 rule_modify_actions,
4746 get_cfm_remote_mpids,
4751 is_mirror_output_bundle,
4752 forward_bpdu_changed,