2 * Copyright (c) 2009, 2010, 2011, 2012 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 "meta-flow.h"
38 #include "multipath.h"
45 #include "ofp-print.h"
46 #include "ofproto-dpif-sflow.h"
47 #include "poll-loop.h"
49 #include "unaligned.h"
51 #include "vlan-bitmap.h"
54 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
56 COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
57 COVERAGE_DEFINE(ofproto_dpif_expired);
58 COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
59 COVERAGE_DEFINE(ofproto_dpif_xlate);
60 COVERAGE_DEFINE(facet_changed_rule);
61 COVERAGE_DEFINE(facet_invalidated);
62 COVERAGE_DEFINE(facet_revalidate);
63 COVERAGE_DEFINE(facet_unexpected);
65 /* Maximum depth of flow table recursion (due to resubmit actions) in a
66 * flow translation. */
67 #define MAX_RESUBMIT_RECURSION 32
69 /* Number of implemented OpenFlow tables. */
70 enum { N_TABLES = 255 };
71 BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
81 * - Do include packets and bytes from facets that have been deleted or
82 * whose own statistics have been folded into the rule.
84 * - Do include packets and bytes sent "by hand" that were accounted to
85 * the rule without any facet being involved (this is a rare corner
86 * case in rule_execute()).
88 * - Do not include packet or bytes that can be obtained from any facet's
89 * packet_count or byte_count member or that can be obtained from the
90 * datapath by, e.g., dpif_flow_get() for any subfacet.
92 uint64_t packet_count; /* Number of packets received. */
93 uint64_t byte_count; /* Number of bytes received. */
95 tag_type tag; /* Caches rule_calculate_tag() result. */
97 struct list facets; /* List of "struct facet"s. */
100 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
102 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
105 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
106 const struct flow *, uint8_t table);
108 static void flow_push_stats(struct rule_dpif *, const struct flow *,
109 uint64_t packets, uint64_t bytes,
112 static uint32_t rule_calculate_tag(const struct flow *,
113 const struct flow_wildcards *,
115 static void rule_invalidate(const struct rule_dpif *);
117 #define MAX_MIRRORS 32
118 typedef uint32_t mirror_mask_t;
119 #define MIRROR_MASK_C(X) UINT32_C(X)
120 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
122 struct ofproto_dpif *ofproto; /* Owning ofproto. */
123 size_t idx; /* In ofproto's "mirrors" array. */
124 void *aux; /* Key supplied by ofproto's client. */
125 char *name; /* Identifier for log messages. */
127 /* Selection criteria. */
128 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
129 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
130 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
132 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
133 struct ofbundle *out; /* Output port or NULL. */
134 int out_vlan; /* Output VLAN or -1. */
135 mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
138 int64_t packet_count; /* Number of packets sent. */
139 int64_t byte_count; /* Number of bytes sent. */
142 static void mirror_destroy(struct ofmirror *);
143 static void update_mirror_stats(struct ofproto_dpif *ofproto,
144 mirror_mask_t mirrors,
145 uint64_t packets, uint64_t bytes);
148 struct ofproto_dpif *ofproto; /* Owning ofproto. */
149 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
150 void *aux; /* Key supplied by ofproto's client. */
151 char *name; /* Identifier for log messages. */
154 struct list ports; /* Contains "struct ofport"s. */
155 enum port_vlan_mode vlan_mode; /* VLAN mode */
156 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
157 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
158 * NULL if all VLANs are trunked. */
159 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
160 struct bond *bond; /* Nonnull iff more than one port. */
161 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
164 bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */
166 /* Port mirroring info. */
167 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
168 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
169 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
172 static void bundle_remove(struct ofport *);
173 static void bundle_update(struct ofbundle *);
174 static void bundle_destroy(struct ofbundle *);
175 static void bundle_del_port(struct ofport_dpif *);
176 static void bundle_run(struct ofbundle *);
177 static void bundle_wait(struct ofbundle *);
178 static struct ofbundle *lookup_input_bundle(struct ofproto_dpif *,
179 uint16_t in_port, bool warn);
181 /* A controller may use OFPP_NONE as the ingress port to indicate that
182 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
183 * when an input bundle is needed for validation (e.g., mirroring or
184 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
185 * any 'port' structs, so care must be taken when dealing with it. */
186 static struct ofbundle ofpp_none_bundle = {
188 .vlan_mode = PORT_VLAN_TRUNK
191 static void stp_run(struct ofproto_dpif *ofproto);
192 static void stp_wait(struct ofproto_dpif *ofproto);
194 static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan);
196 struct action_xlate_ctx {
197 /* action_xlate_ctx_init() initializes these members. */
200 struct ofproto_dpif *ofproto;
202 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
203 * this flow when actions change header fields. */
206 /* The packet corresponding to 'flow', or a null pointer if we are
207 * revalidating without a packet to refer to. */
208 const struct ofpbuf *packet;
210 /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We
211 * want to execute them if we are actually processing a packet, or if we
212 * are accounting for packets that the datapath has processed, but not if
213 * we are just revalidating. */
216 /* The rule that we are currently translating, or NULL. */
217 struct rule_dpif *rule;
219 /* If nonnull, called just before executing a resubmit action.
221 * This is normally null so the client has to set it manually after
222 * calling action_xlate_ctx_init(). */
223 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
225 /* xlate_actions() initializes and uses these members. The client might want
226 * to look at them after it returns. */
228 struct ofpbuf *odp_actions; /* Datapath actions. */
229 tag_type tags; /* Tags associated with actions. */
230 bool may_set_up_flow; /* True ordinarily; false if the actions must
231 * be reassessed for every packet. */
232 bool has_learn; /* Actions include NXAST_LEARN? */
233 bool has_normal; /* Actions output to OFPP_NORMAL? */
234 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
235 mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
237 /* xlate_actions() initializes and uses these members, but the client has no
238 * reason to look at them. */
240 int recurse; /* Recursion level, via xlate_table_action. */
241 struct flow base_flow; /* Flow at the last commit. */
242 uint32_t orig_skb_priority; /* Priority when packet arrived. */
243 uint8_t table_id; /* OpenFlow table ID where flow was found. */
244 uint32_t sflow_n_outputs; /* Number of output ports. */
245 uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
246 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
247 bool exit; /* No further actions should be processed. */
250 static void action_xlate_ctx_init(struct action_xlate_ctx *,
251 struct ofproto_dpif *, const struct flow *,
252 ovs_be16 initial_tci, struct rule_dpif *,
253 const struct ofpbuf *);
254 static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
255 const union ofp_action *in, size_t n_in);
257 /* An exact-match instantiation of an OpenFlow flow.
259 * A facet associates a "struct flow", which represents the Open vSwitch
260 * userspace idea of an exact-match flow, with one or more subfacets. Each
261 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
262 * the facet. When the kernel module (or other dpif implementation) and Open
263 * vSwitch userspace agree on the definition of a flow key, there is exactly
264 * one subfacet per facet. If the dpif implementation supports more-specific
265 * flow matching than userspace, however, a facet can have more than one
266 * subfacet, each of which corresponds to some distinction in flow that
267 * userspace simply doesn't understand.
269 * Flow expiration works in terms of subfacets, so a facet must have at least
270 * one subfacet or it will never expire, leaking memory. */
273 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
274 struct list list_node; /* In owning rule's 'facets' list. */
275 struct rule_dpif *rule; /* Owning rule. */
278 struct list subfacets;
279 long long int used; /* Time last used; time created if not used. */
286 * - Do include packets and bytes sent "by hand", e.g. with
289 * - Do include packets and bytes that were obtained from the datapath
290 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
291 * DPIF_FP_ZERO_STATS).
293 * - Do not include packets or bytes that can be obtained from the
294 * datapath for any existing subfacet.
296 uint64_t packet_count; /* Number of packets received. */
297 uint64_t byte_count; /* Number of bytes received. */
299 /* Resubmit statistics. */
300 uint64_t prev_packet_count; /* Number of packets from last stats push. */
301 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
302 long long int prev_used; /* Used time from last stats push. */
305 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
306 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
308 /* Properties of datapath actions.
310 * Every subfacet has its own actions because actions can differ slightly
311 * between splintered and non-splintered subfacets due to the VLAN tag
312 * being initially different (present vs. absent). All of them have these
313 * properties in common so we just store one copy of them here. */
314 bool may_install; /* Reassess actions for every packet? */
315 bool has_learn; /* Actions include NXAST_LEARN? */
316 bool has_normal; /* Actions output to OFPP_NORMAL? */
317 tag_type tags; /* Tags that would require revalidation. */
318 mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
321 static struct facet *facet_create(struct rule_dpif *, const struct flow *);
322 static void facet_remove(struct facet *);
323 static void facet_free(struct facet *);
325 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
326 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
327 const struct flow *);
328 static bool facet_revalidate(struct facet *);
329 static bool facet_check_consistency(struct facet *);
331 static void facet_flush_stats(struct facet *);
333 static void facet_update_time(struct facet *, long long int used);
334 static void facet_reset_counters(struct facet *);
335 static void facet_push_stats(struct facet *);
336 static void facet_account(struct facet *);
338 static bool facet_is_controller_flow(struct facet *);
340 /* A dpif flow and actions associated with a facet.
342 * See also the large comment on struct facet. */
345 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
346 struct list list_node; /* In struct facet's 'facets' list. */
347 struct facet *facet; /* Owning facet. */
351 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
352 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
353 * regenerate the ODP flow key from ->facet->flow. */
354 enum odp_key_fitness key_fitness;
358 long long int used; /* Time last used; time created if not used. */
360 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
361 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
365 * These should be essentially identical for every subfacet in a facet, but
366 * may differ in trivial ways due to VLAN splinters. */
367 size_t actions_len; /* Number of bytes in actions[]. */
368 struct nlattr *actions; /* Datapath actions. */
370 bool installed; /* Installed in datapath? */
372 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
373 * splinters can cause it to differ. This value should be removed when
374 * the VLAN splinters feature is no longer needed. */
375 ovs_be16 initial_tci; /* Initial VLAN TCI value. */
378 static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
379 const struct nlattr *key,
380 size_t key_len, ovs_be16 initial_tci);
381 static struct subfacet *subfacet_find(struct ofproto_dpif *,
382 const struct nlattr *key, size_t key_len);
383 static void subfacet_destroy(struct subfacet *);
384 static void subfacet_destroy__(struct subfacet *);
385 static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
387 static void subfacet_reset_dp_stats(struct subfacet *,
388 struct dpif_flow_stats *);
389 static void subfacet_update_time(struct subfacet *, long long int used);
390 static void subfacet_update_stats(struct subfacet *,
391 const struct dpif_flow_stats *);
392 static void subfacet_make_actions(struct subfacet *,
393 const struct ofpbuf *packet);
394 static int subfacet_install(struct subfacet *,
395 const struct nlattr *actions, size_t actions_len,
396 struct dpif_flow_stats *);
397 static void subfacet_uninstall(struct subfacet *);
403 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
404 struct list bundle_node; /* In struct ofbundle's "ports" list. */
405 struct cfm *cfm; /* Connectivity Fault Management, if any. */
406 tag_type tag; /* Tag associated with this port. */
407 uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
408 bool may_enable; /* May be enabled in bonds. */
411 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
412 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
413 long long int stp_state_entered;
415 struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
417 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
419 * This is deprecated. It is only for compatibility with broken device
420 * drivers in old versions of Linux that do not properly support VLANs when
421 * VLAN devices are not used. When broken device drivers are no longer in
422 * widespread use, we will delete these interfaces. */
423 uint16_t realdev_ofp_port;
427 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
428 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
429 * traffic egressing the 'ofport' with that priority should be marked with. */
430 struct priority_to_dscp {
431 struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */
432 uint32_t priority; /* Priority of this queue (see struct flow). */
434 uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */
437 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
439 * This is deprecated. It is only for compatibility with broken device drivers
440 * in old versions of Linux that do not properly support VLANs when VLAN
441 * devices are not used. When broken device drivers are no longer in
442 * widespread use, we will delete these interfaces. */
443 struct vlan_splinter {
444 struct hmap_node realdev_vid_node;
445 struct hmap_node vlandev_node;
446 uint16_t realdev_ofp_port;
447 uint16_t vlandev_ofp_port;
451 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
452 uint32_t realdev, ovs_be16 vlan_tci);
453 static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif *,
454 uint16_t vlandev, int *vid);
455 static void vsp_remove(struct ofport_dpif *);
456 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
458 static struct ofport_dpif *
459 ofport_dpif_cast(const struct ofport *ofport)
461 assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
462 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
465 static void port_run(struct ofport_dpif *);
466 static void port_wait(struct ofport_dpif *);
467 static int set_cfm(struct ofport *, const struct cfm_settings *);
468 static void ofport_clear_priorities(struct ofport_dpif *);
470 struct dpif_completion {
471 struct list list_node;
472 struct ofoperation *op;
475 /* Extra information about a classifier table.
476 * Currently used just for optimized flow revalidation. */
478 /* If either of these is nonnull, then this table has a form that allows
479 * flows to be tagged to avoid revalidating most flows for the most common
480 * kinds of flow table changes. */
481 struct cls_table *catchall_table; /* Table that wildcards all fields. */
482 struct cls_table *other_table; /* Table with any other wildcard set. */
483 uint32_t basis; /* Keeps each table's tags separate. */
486 struct ofproto_dpif {
487 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
496 struct netflow *netflow;
497 struct dpif_sflow *sflow;
498 struct hmap bundles; /* Contains "struct ofbundle"s. */
499 struct mac_learning *ml;
500 struct ofmirror *mirrors[MAX_MIRRORS];
501 bool has_bonded_bundles;
504 struct timer next_expiration;
508 struct hmap subfacets;
511 struct table_dpif tables[N_TABLES];
512 bool need_revalidate;
513 struct tag_set revalidate_set;
515 /* Support for debugging async flow mods. */
516 struct list completions;
518 bool has_bundle_action; /* True when the first bundle action appears. */
519 struct netdev_stats stats; /* To account packets generated and consumed in
524 long long int stp_last_tick;
526 /* VLAN splinters. */
527 struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
528 struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
531 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
532 * for debugging the asynchronous flow_mod implementation.) */
535 /* All existing ofproto_dpif instances, indexed by ->up.name. */
536 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
538 static void ofproto_dpif_unixctl_init(void);
540 static struct ofproto_dpif *
541 ofproto_dpif_cast(const struct ofproto *ofproto)
543 assert(ofproto->ofproto_class == &ofproto_dpif_class);
544 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
547 static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
549 static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
552 /* Packet processing. */
553 static void update_learning_table(struct ofproto_dpif *,
554 const struct flow *, int vlan,
557 #define FLOW_MISS_MAX_BATCH 50
558 static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
560 /* Flow expiration. */
561 static int expire(struct ofproto_dpif *);
564 static void send_netflow_active_timeouts(struct ofproto_dpif *);
567 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
569 compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
570 const struct flow *, uint32_t odp_port);
571 static void add_mirror_actions(struct action_xlate_ctx *ctx,
572 const struct flow *flow);
573 /* Global variables. */
574 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
576 /* Factory functions. */
579 enumerate_types(struct sset *types)
581 dp_enumerate_types(types);
585 enumerate_names(const char *type, struct sset *names)
587 return dp_enumerate_names(type, names);
591 del(const char *type, const char *name)
596 error = dpif_open(name, type, &dpif);
598 error = dpif_delete(dpif);
604 /* Basic life-cycle. */
606 static struct ofproto *
609 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
614 dealloc(struct ofproto *ofproto_)
616 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
621 construct(struct ofproto *ofproto_)
623 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
624 const char *name = ofproto->up.name;
628 error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
630 VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
634 ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
635 ofproto->n_matches = 0;
637 dpif_flow_flush(ofproto->dpif);
638 dpif_recv_purge(ofproto->dpif);
640 error = dpif_recv_set(ofproto->dpif, true);
642 VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
643 dpif_close(ofproto->dpif);
647 ofproto->netflow = NULL;
648 ofproto->sflow = NULL;
650 hmap_init(&ofproto->bundles);
651 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
652 for (i = 0; i < MAX_MIRRORS; i++) {
653 ofproto->mirrors[i] = NULL;
655 ofproto->has_bonded_bundles = false;
657 timer_set_duration(&ofproto->next_expiration, 1000);
659 hmap_init(&ofproto->facets);
660 hmap_init(&ofproto->subfacets);
662 for (i = 0; i < N_TABLES; i++) {
663 struct table_dpif *table = &ofproto->tables[i];
665 table->catchall_table = NULL;
666 table->other_table = NULL;
667 table->basis = random_uint32();
669 ofproto->need_revalidate = false;
670 tag_set_init(&ofproto->revalidate_set);
672 list_init(&ofproto->completions);
674 ofproto_dpif_unixctl_init();
676 ofproto->has_bundle_action = false;
678 hmap_init(&ofproto->vlandev_map);
679 hmap_init(&ofproto->realdev_vid_map);
681 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
682 hash_string(ofproto->up.name, 0));
683 memset(&ofproto->stats, 0, sizeof ofproto->stats);
685 ofproto_init_tables(ofproto_, N_TABLES);
691 complete_operations(struct ofproto_dpif *ofproto)
693 struct dpif_completion *c, *next;
695 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
696 ofoperation_complete(c->op, 0);
697 list_remove(&c->list_node);
703 destruct(struct ofproto *ofproto_)
705 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
706 struct rule_dpif *rule, *next_rule;
707 struct oftable *table;
710 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
711 complete_operations(ofproto);
713 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
714 struct cls_cursor cursor;
716 cls_cursor_init(&cursor, &table->cls, NULL);
717 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
718 ofproto_rule_destroy(&rule->up);
722 for (i = 0; i < MAX_MIRRORS; i++) {
723 mirror_destroy(ofproto->mirrors[i]);
726 netflow_destroy(ofproto->netflow);
727 dpif_sflow_destroy(ofproto->sflow);
728 hmap_destroy(&ofproto->bundles);
729 mac_learning_destroy(ofproto->ml);
731 hmap_destroy(&ofproto->facets);
732 hmap_destroy(&ofproto->subfacets);
734 hmap_destroy(&ofproto->vlandev_map);
735 hmap_destroy(&ofproto->realdev_vid_map);
737 dpif_close(ofproto->dpif);
741 run_fast(struct ofproto *ofproto_)
743 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
746 /* Handle one or more batches of upcalls, until there's nothing left to do
747 * or until we do a fixed total amount of work.
749 * We do work in batches because it can be much cheaper to set up a number
750 * of flows and fire off their patches all at once. We do multiple batches
751 * because in some cases handling a packet can cause another packet to be
752 * queued almost immediately as part of the return flow. Both
753 * optimizations can make major improvements on some benchmarks and
754 * presumably for real traffic as well. */
756 while (work < FLOW_MISS_MAX_BATCH) {
757 int retval = handle_upcalls(ofproto, FLOW_MISS_MAX_BATCH - work);
767 run(struct ofproto *ofproto_)
769 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
770 struct ofport_dpif *ofport;
771 struct ofbundle *bundle;
775 complete_operations(ofproto);
777 dpif_run(ofproto->dpif);
779 error = run_fast(ofproto_);
784 if (timer_expired(&ofproto->next_expiration)) {
785 int delay = expire(ofproto);
786 timer_set_duration(&ofproto->next_expiration, delay);
789 if (ofproto->netflow) {
790 if (netflow_run(ofproto->netflow)) {
791 send_netflow_active_timeouts(ofproto);
794 if (ofproto->sflow) {
795 dpif_sflow_run(ofproto->sflow);
798 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
801 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
806 mac_learning_run(ofproto->ml, &ofproto->revalidate_set);
808 /* Now revalidate if there's anything to do. */
809 if (ofproto->need_revalidate
810 || !tag_set_is_empty(&ofproto->revalidate_set)) {
811 struct tag_set revalidate_set = ofproto->revalidate_set;
812 bool revalidate_all = ofproto->need_revalidate;
813 struct facet *facet, *next;
815 /* Clear the revalidation flags. */
816 tag_set_init(&ofproto->revalidate_set);
817 ofproto->need_revalidate = false;
819 HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
821 || tag_set_intersects(&revalidate_set, facet->tags)) {
822 facet_revalidate(facet);
827 /* Check the consistency of a random facet, to aid debugging. */
828 if (!hmap_is_empty(&ofproto->facets) && !ofproto->need_revalidate) {
831 facet = CONTAINER_OF(hmap_random_node(&ofproto->facets),
832 struct facet, hmap_node);
833 if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) {
834 if (!facet_check_consistency(facet)) {
835 ofproto->need_revalidate = true;
844 wait(struct ofproto *ofproto_)
846 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
847 struct ofport_dpif *ofport;
848 struct ofbundle *bundle;
850 if (!clogged && !list_is_empty(&ofproto->completions)) {
851 poll_immediate_wake();
854 dpif_wait(ofproto->dpif);
855 dpif_recv_wait(ofproto->dpif);
856 if (ofproto->sflow) {
857 dpif_sflow_wait(ofproto->sflow);
859 if (!tag_set_is_empty(&ofproto->revalidate_set)) {
860 poll_immediate_wake();
862 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
865 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
868 if (ofproto->netflow) {
869 netflow_wait(ofproto->netflow);
871 mac_learning_wait(ofproto->ml);
873 if (ofproto->need_revalidate) {
874 /* Shouldn't happen, but if it does just go around again. */
875 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
876 poll_immediate_wake();
878 timer_wait(&ofproto->next_expiration);
883 flush(struct ofproto *ofproto_)
885 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
886 struct facet *facet, *next_facet;
888 HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
889 /* Mark the facet as not installed so that facet_remove() doesn't
890 * bother trying to uninstall it. There is no point in uninstalling it
891 * individually since we are about to blow away all the facets with
892 * dpif_flow_flush(). */
893 struct subfacet *subfacet;
895 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
896 subfacet->installed = false;
897 subfacet->dp_packet_count = 0;
898 subfacet->dp_byte_count = 0;
902 dpif_flow_flush(ofproto->dpif);
906 get_features(struct ofproto *ofproto_ OVS_UNUSED,
907 bool *arp_match_ip, uint32_t *actions)
909 *arp_match_ip = true;
910 *actions = ((1u << OFPAT_OUTPUT) |
911 (1u << OFPAT_SET_VLAN_VID) |
912 (1u << OFPAT_SET_VLAN_PCP) |
913 (1u << OFPAT_STRIP_VLAN) |
914 (1u << OFPAT_SET_DL_SRC) |
915 (1u << OFPAT_SET_DL_DST) |
916 (1u << OFPAT_SET_NW_SRC) |
917 (1u << OFPAT_SET_NW_DST) |
918 (1u << OFPAT_SET_NW_TOS) |
919 (1u << OFPAT_SET_TP_SRC) |
920 (1u << OFPAT_SET_TP_DST) |
921 (1u << OFPAT_ENQUEUE));
925 get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots)
927 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
928 struct dpif_dp_stats s;
930 strcpy(ots->name, "classifier");
932 dpif_get_dp_stats(ofproto->dpif, &s);
933 put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
934 put_32aligned_be64(&ots->matched_count,
935 htonll(s.n_hit + ofproto->n_matches));
938 static struct ofport *
941 struct ofport_dpif *port = xmalloc(sizeof *port);
946 port_dealloc(struct ofport *port_)
948 struct ofport_dpif *port = ofport_dpif_cast(port_);
953 port_construct(struct ofport *port_)
955 struct ofport_dpif *port = ofport_dpif_cast(port_);
956 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
958 ofproto->need_revalidate = true;
959 port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
962 port->tag = tag_create_random();
963 port->may_enable = true;
964 port->stp_port = NULL;
965 port->stp_state = STP_DISABLED;
966 hmap_init(&port->priorities);
967 port->realdev_ofp_port = 0;
968 port->vlandev_vid = 0;
970 if (ofproto->sflow) {
971 dpif_sflow_add_port(ofproto->sflow, port_);
978 port_destruct(struct ofport *port_)
980 struct ofport_dpif *port = ofport_dpif_cast(port_);
981 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
983 ofproto->need_revalidate = true;
984 bundle_remove(port_);
985 set_cfm(port_, NULL);
986 if (ofproto->sflow) {
987 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
990 ofport_clear_priorities(port);
991 hmap_destroy(&port->priorities);
995 port_modified(struct ofport *port_)
997 struct ofport_dpif *port = ofport_dpif_cast(port_);
999 if (port->bundle && port->bundle->bond) {
1000 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1005 port_reconfigured(struct ofport *port_, ovs_be32 old_config)
1007 struct ofport_dpif *port = ofport_dpif_cast(port_);
1008 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1009 ovs_be32 changed = old_config ^ port->up.opp.config;
1011 if (changed & htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
1012 OFPPC_NO_FWD | OFPPC_NO_FLOOD)) {
1013 ofproto->need_revalidate = true;
1015 if (changed & htonl(OFPPC_NO_FLOOD) && port->bundle) {
1016 bundle_update(port->bundle);
1022 set_sflow(struct ofproto *ofproto_,
1023 const struct ofproto_sflow_options *sflow_options)
1025 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1026 struct dpif_sflow *ds = ofproto->sflow;
1028 if (sflow_options) {
1030 struct ofport_dpif *ofport;
1032 ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
1033 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1034 dpif_sflow_add_port(ds, &ofport->up);
1036 ofproto->need_revalidate = true;
1038 dpif_sflow_set_options(ds, sflow_options);
1041 dpif_sflow_destroy(ds);
1042 ofproto->need_revalidate = true;
1043 ofproto->sflow = NULL;
1050 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1052 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1059 struct ofproto_dpif *ofproto;
1061 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1062 ofproto->need_revalidate = true;
1063 ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
1066 if (cfm_configure(ofport->cfm, s)) {
1072 cfm_destroy(ofport->cfm);
1078 get_cfm_fault(const struct ofport *ofport_)
1080 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1082 return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
1086 get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
1089 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1092 cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
1099 /* Spanning Tree. */
1102 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
1104 struct ofproto_dpif *ofproto = ofproto_;
1105 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
1106 struct ofport_dpif *ofport;
1108 ofport = stp_port_get_aux(sp);
1110 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
1111 ofproto->up.name, port_num);
1113 struct eth_header *eth = pkt->l2;
1115 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
1116 if (eth_addr_is_zero(eth->eth_src)) {
1117 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
1118 "with unknown MAC", ofproto->up.name, port_num);
1120 send_packet(ofport, pkt);
1126 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1128 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
1130 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1132 /* Only revalidate flows if the configuration changed. */
1133 if (!s != !ofproto->stp) {
1134 ofproto->need_revalidate = true;
1138 if (!ofproto->stp) {
1139 ofproto->stp = stp_create(ofproto_->name, s->system_id,
1140 send_bpdu_cb, ofproto);
1141 ofproto->stp_last_tick = time_msec();
1144 stp_set_bridge_id(ofproto->stp, s->system_id);
1145 stp_set_bridge_priority(ofproto->stp, s->priority);
1146 stp_set_hello_time(ofproto->stp, s->hello_time);
1147 stp_set_max_age(ofproto->stp, s->max_age);
1148 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
1150 stp_destroy(ofproto->stp);
1151 ofproto->stp = NULL;
1158 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
1160 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1164 s->bridge_id = stp_get_bridge_id(ofproto->stp);
1165 s->designated_root = stp_get_designated_root(ofproto->stp);
1166 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
1175 update_stp_port_state(struct ofport_dpif *ofport)
1177 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1178 enum stp_state state;
1180 /* Figure out new state. */
1181 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
1185 if (ofport->stp_state != state) {
1189 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
1190 netdev_get_name(ofport->up.netdev),
1191 stp_state_name(ofport->stp_state),
1192 stp_state_name(state));
1193 if (stp_learn_in_state(ofport->stp_state)
1194 != stp_learn_in_state(state)) {
1195 /* xxx Learning action flows should also be flushed. */
1196 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1198 fwd_change = stp_forward_in_state(ofport->stp_state)
1199 != stp_forward_in_state(state);
1201 ofproto->need_revalidate = true;
1202 ofport->stp_state = state;
1203 ofport->stp_state_entered = time_msec();
1205 if (fwd_change && ofport->bundle) {
1206 bundle_update(ofport->bundle);
1209 /* Update the STP state bits in the OpenFlow port description. */
1210 of_state = (ofport->up.opp.state & htonl(~OFPPS_STP_MASK))
1211 | htonl(state == STP_LISTENING ? OFPPS_STP_LISTEN
1212 : state == STP_LEARNING ? OFPPS_STP_LEARN
1213 : state == STP_FORWARDING ? OFPPS_STP_FORWARD
1214 : state == STP_BLOCKING ? OFPPS_STP_BLOCK
1216 ofproto_port_set_state(&ofport->up, of_state);
1220 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1221 * caller is responsible for assigning STP port numbers and ensuring
1222 * there are no duplicates. */
1224 set_stp_port(struct ofport *ofport_,
1225 const struct ofproto_port_stp_settings *s)
1227 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1228 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1229 struct stp_port *sp = ofport->stp_port;
1231 if (!s || !s->enable) {
1233 ofport->stp_port = NULL;
1234 stp_port_disable(sp);
1235 update_stp_port_state(ofport);
1238 } else if (sp && stp_port_no(sp) != s->port_num
1239 && ofport == stp_port_get_aux(sp)) {
1240 /* The port-id changed, so disable the old one if it's not
1241 * already in use by another port. */
1242 stp_port_disable(sp);
1245 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
1246 stp_port_enable(sp);
1248 stp_port_set_aux(sp, ofport);
1249 stp_port_set_priority(sp, s->priority);
1250 stp_port_set_path_cost(sp, s->path_cost);
1252 update_stp_port_state(ofport);
1258 get_stp_port_status(struct ofport *ofport_,
1259 struct ofproto_port_stp_status *s)
1261 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1262 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1263 struct stp_port *sp = ofport->stp_port;
1265 if (!ofproto->stp || !sp) {
1271 s->port_id = stp_port_get_id(sp);
1272 s->state = stp_port_get_state(sp);
1273 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
1274 s->role = stp_port_get_role(sp);
1275 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
1281 stp_run(struct ofproto_dpif *ofproto)
1284 long long int now = time_msec();
1285 long long int elapsed = now - ofproto->stp_last_tick;
1286 struct stp_port *sp;
1289 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
1290 ofproto->stp_last_tick = now;
1292 while (stp_get_changed_port(ofproto->stp, &sp)) {
1293 struct ofport_dpif *ofport = stp_port_get_aux(sp);
1296 update_stp_port_state(ofport);
1300 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
1301 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1307 stp_wait(struct ofproto_dpif *ofproto)
1310 poll_timer_wait(1000);
1314 /* Returns true if STP should process 'flow'. */
1316 stp_should_process_flow(const struct flow *flow)
1318 return eth_addr_equals(flow->dl_dst, eth_addr_stp);
1322 stp_process_packet(const struct ofport_dpif *ofport,
1323 const struct ofpbuf *packet)
1325 struct ofpbuf payload = *packet;
1326 struct eth_header *eth = payload.data;
1327 struct stp_port *sp = ofport->stp_port;
1329 /* Sink packets on ports that have STP disabled when the bridge has
1331 if (!sp || stp_port_get_state(sp) == STP_DISABLED) {
1335 /* Trim off padding on payload. */
1336 if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
1337 payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN;
1340 if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
1341 stp_received_bpdu(sp, payload.data, payload.size);
1345 static struct priority_to_dscp *
1346 get_priority(const struct ofport_dpif *ofport, uint32_t priority)
1348 struct priority_to_dscp *pdscp;
1351 hash = hash_int(priority, 0);
1352 HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &ofport->priorities) {
1353 if (pdscp->priority == priority) {
1361 ofport_clear_priorities(struct ofport_dpif *ofport)
1363 struct priority_to_dscp *pdscp, *next;
1365 HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &ofport->priorities) {
1366 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1372 set_queues(struct ofport *ofport_,
1373 const struct ofproto_port_queue *qdscp_list,
1376 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1377 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1378 struct hmap new = HMAP_INITIALIZER(&new);
1381 for (i = 0; i < n_qdscp; i++) {
1382 struct priority_to_dscp *pdscp;
1386 dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK;
1387 if (dpif_queue_to_priority(ofproto->dpif, qdscp_list[i].queue,
1392 pdscp = get_priority(ofport, priority);
1394 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1396 pdscp = xmalloc(sizeof *pdscp);
1397 pdscp->priority = priority;
1399 ofproto->need_revalidate = true;
1402 if (pdscp->dscp != dscp) {
1404 ofproto->need_revalidate = true;
1407 hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
1410 if (!hmap_is_empty(&ofport->priorities)) {
1411 ofport_clear_priorities(ofport);
1412 ofproto->need_revalidate = true;
1415 hmap_swap(&new, &ofport->priorities);
1423 /* Expires all MAC learning entries associated with 'bundle' and forces its
1424 * ofproto to revalidate every flow.
1426 * Normally MAC learning entries are removed only from the ofproto associated
1427 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
1428 * are removed from every ofproto. When patch ports and SLB bonds are in use
1429 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
1430 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
1431 * with the host from which it migrated. */
1433 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
1435 struct ofproto_dpif *ofproto = bundle->ofproto;
1436 struct mac_learning *ml = ofproto->ml;
1437 struct mac_entry *mac, *next_mac;
1439 ofproto->need_revalidate = true;
1440 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
1441 if (mac->port.p == bundle) {
1443 struct ofproto_dpif *o;
1445 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1447 struct mac_entry *e;
1449 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan,
1452 tag_set_add(&o->revalidate_set, e->tag);
1453 mac_learning_expire(o->ml, e);
1459 mac_learning_expire(ml, mac);
1464 static struct ofbundle *
1465 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
1467 struct ofbundle *bundle;
1469 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
1470 &ofproto->bundles) {
1471 if (bundle->aux == aux) {
1478 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
1479 * ones that are found to 'bundles'. */
1481 bundle_lookup_multiple(struct ofproto_dpif *ofproto,
1482 void **auxes, size_t n_auxes,
1483 struct hmapx *bundles)
1487 hmapx_init(bundles);
1488 for (i = 0; i < n_auxes; i++) {
1489 struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
1491 hmapx_add(bundles, bundle);
1497 bundle_update(struct ofbundle *bundle)
1499 struct ofport_dpif *port;
1501 bundle->floodable = true;
1502 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1503 if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
1504 bundle->floodable = false;
1511 bundle_del_port(struct ofport_dpif *port)
1513 struct ofbundle *bundle = port->bundle;
1515 bundle->ofproto->need_revalidate = true;
1517 list_remove(&port->bundle_node);
1518 port->bundle = NULL;
1521 lacp_slave_unregister(bundle->lacp, port);
1524 bond_slave_unregister(bundle->bond, port);
1527 bundle_update(bundle);
1531 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
1532 struct lacp_slave_settings *lacp,
1533 uint32_t bond_stable_id)
1535 struct ofport_dpif *port;
1537 port = get_ofp_port(bundle->ofproto, ofp_port);
1542 if (port->bundle != bundle) {
1543 bundle->ofproto->need_revalidate = true;
1545 bundle_del_port(port);
1548 port->bundle = bundle;
1549 list_push_back(&bundle->ports, &port->bundle_node);
1550 if (port->up.opp.config & htonl(OFPPC_NO_FLOOD)) {
1551 bundle->floodable = false;
1555 port->bundle->ofproto->need_revalidate = true;
1556 lacp_slave_register(bundle->lacp, port, lacp);
1559 port->bond_stable_id = bond_stable_id;
1565 bundle_destroy(struct ofbundle *bundle)
1567 struct ofproto_dpif *ofproto;
1568 struct ofport_dpif *port, *next_port;
1575 ofproto = bundle->ofproto;
1576 for (i = 0; i < MAX_MIRRORS; i++) {
1577 struct ofmirror *m = ofproto->mirrors[i];
1579 if (m->out == bundle) {
1581 } else if (hmapx_find_and_delete(&m->srcs, bundle)
1582 || hmapx_find_and_delete(&m->dsts, bundle)) {
1583 ofproto->need_revalidate = true;
1588 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1589 bundle_del_port(port);
1592 bundle_flush_macs(bundle, true);
1593 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
1595 free(bundle->trunks);
1596 lacp_destroy(bundle->lacp);
1597 bond_destroy(bundle->bond);
1602 bundle_set(struct ofproto *ofproto_, void *aux,
1603 const struct ofproto_bundle_settings *s)
1605 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1606 bool need_flush = false;
1607 struct ofport_dpif *port;
1608 struct ofbundle *bundle;
1609 unsigned long *trunks;
1615 bundle_destroy(bundle_lookup(ofproto, aux));
1619 assert(s->n_slaves == 1 || s->bond != NULL);
1620 assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
1622 bundle = bundle_lookup(ofproto, aux);
1624 bundle = xmalloc(sizeof *bundle);
1626 bundle->ofproto = ofproto;
1627 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
1628 hash_pointer(aux, 0));
1630 bundle->name = NULL;
1632 list_init(&bundle->ports);
1633 bundle->vlan_mode = PORT_VLAN_TRUNK;
1635 bundle->trunks = NULL;
1636 bundle->use_priority_tags = s->use_priority_tags;
1637 bundle->lacp = NULL;
1638 bundle->bond = NULL;
1640 bundle->floodable = true;
1642 bundle->src_mirrors = 0;
1643 bundle->dst_mirrors = 0;
1644 bundle->mirror_out = 0;
1647 if (!bundle->name || strcmp(s->name, bundle->name)) {
1649 bundle->name = xstrdup(s->name);
1654 if (!bundle->lacp) {
1655 ofproto->need_revalidate = true;
1656 bundle->lacp = lacp_create();
1658 lacp_configure(bundle->lacp, s->lacp);
1660 lacp_destroy(bundle->lacp);
1661 bundle->lacp = NULL;
1664 /* Update set of ports. */
1666 for (i = 0; i < s->n_slaves; i++) {
1667 if (!bundle_add_port(bundle, s->slaves[i],
1668 s->lacp ? &s->lacp_slaves[i] : NULL,
1669 s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
1673 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
1674 struct ofport_dpif *next_port;
1676 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1677 for (i = 0; i < s->n_slaves; i++) {
1678 if (s->slaves[i] == port->up.ofp_port) {
1683 bundle_del_port(port);
1687 assert(list_size(&bundle->ports) <= s->n_slaves);
1689 if (list_is_empty(&bundle->ports)) {
1690 bundle_destroy(bundle);
1694 /* Set VLAN tagging mode */
1695 if (s->vlan_mode != bundle->vlan_mode
1696 || s->use_priority_tags != bundle->use_priority_tags) {
1697 bundle->vlan_mode = s->vlan_mode;
1698 bundle->use_priority_tags = s->use_priority_tags;
1703 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
1704 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
1706 if (vlan != bundle->vlan) {
1707 bundle->vlan = vlan;
1711 /* Get trunked VLANs. */
1712 switch (s->vlan_mode) {
1713 case PORT_VLAN_ACCESS:
1717 case PORT_VLAN_TRUNK:
1718 trunks = (unsigned long *) s->trunks;
1721 case PORT_VLAN_NATIVE_UNTAGGED:
1722 case PORT_VLAN_NATIVE_TAGGED:
1723 if (vlan != 0 && (!s->trunks
1724 || !bitmap_is_set(s->trunks, vlan)
1725 || bitmap_is_set(s->trunks, 0))) {
1726 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
1728 trunks = bitmap_clone(s->trunks, 4096);
1730 trunks = bitmap_allocate1(4096);
1732 bitmap_set1(trunks, vlan);
1733 bitmap_set0(trunks, 0);
1735 trunks = (unsigned long *) s->trunks;
1742 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
1743 free(bundle->trunks);
1744 if (trunks == s->trunks) {
1745 bundle->trunks = vlan_bitmap_clone(trunks);
1747 bundle->trunks = trunks;
1752 if (trunks != s->trunks) {
1757 if (!list_is_short(&bundle->ports)) {
1758 bundle->ofproto->has_bonded_bundles = true;
1760 if (bond_reconfigure(bundle->bond, s->bond)) {
1761 ofproto->need_revalidate = true;
1764 bundle->bond = bond_create(s->bond);
1765 ofproto->need_revalidate = true;
1768 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1769 bond_slave_register(bundle->bond, port, port->bond_stable_id,
1773 bond_destroy(bundle->bond);
1774 bundle->bond = NULL;
1777 /* If we changed something that would affect MAC learning, un-learn
1778 * everything on this port and force flow revalidation. */
1780 bundle_flush_macs(bundle, false);
1787 bundle_remove(struct ofport *port_)
1789 struct ofport_dpif *port = ofport_dpif_cast(port_);
1790 struct ofbundle *bundle = port->bundle;
1793 bundle_del_port(port);
1794 if (list_is_empty(&bundle->ports)) {
1795 bundle_destroy(bundle);
1796 } else if (list_is_short(&bundle->ports)) {
1797 bond_destroy(bundle->bond);
1798 bundle->bond = NULL;
1804 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
1806 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
1807 struct ofport_dpif *port = port_;
1808 uint8_t ea[ETH_ADDR_LEN];
1811 error = netdev_get_etheraddr(port->up.netdev, ea);
1813 struct ofpbuf packet;
1816 ofpbuf_init(&packet, 0);
1817 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
1819 memcpy(packet_pdu, pdu, pdu_size);
1821 send_packet(port, &packet);
1822 ofpbuf_uninit(&packet);
1824 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
1825 "%s (%s)", port->bundle->name,
1826 netdev_get_name(port->up.netdev), strerror(error));
1831 bundle_send_learning_packets(struct ofbundle *bundle)
1833 struct ofproto_dpif *ofproto = bundle->ofproto;
1834 int error, n_packets, n_errors;
1835 struct mac_entry *e;
1837 error = n_packets = n_errors = 0;
1838 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
1839 if (e->port.p != bundle) {
1840 struct ofpbuf *learning_packet;
1841 struct ofport_dpif *port;
1845 /* The assignment to "port" is unnecessary but makes "grep"ing for
1846 * struct ofport_dpif more effective. */
1847 learning_packet = bond_compose_learning_packet(bundle->bond,
1851 ret = send_packet(port, learning_packet);
1852 ofpbuf_delete(learning_packet);
1862 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1863 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
1864 "packets, last error was: %s",
1865 bundle->name, n_errors, n_packets, strerror(error));
1867 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
1868 bundle->name, n_packets);
1873 bundle_run(struct ofbundle *bundle)
1876 lacp_run(bundle->lacp, send_pdu_cb);
1879 struct ofport_dpif *port;
1881 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1882 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
1885 bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
1886 lacp_status(bundle->lacp));
1887 if (bond_should_send_learning_packets(bundle->bond)) {
1888 bundle_send_learning_packets(bundle);
1894 bundle_wait(struct ofbundle *bundle)
1897 lacp_wait(bundle->lacp);
1900 bond_wait(bundle->bond);
1907 mirror_scan(struct ofproto_dpif *ofproto)
1911 for (idx = 0; idx < MAX_MIRRORS; idx++) {
1912 if (!ofproto->mirrors[idx]) {
1919 static struct ofmirror *
1920 mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
1924 for (i = 0; i < MAX_MIRRORS; i++) {
1925 struct ofmirror *mirror = ofproto->mirrors[i];
1926 if (mirror && mirror->aux == aux) {
1934 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
1936 mirror_update_dups(struct ofproto_dpif *ofproto)
1940 for (i = 0; i < MAX_MIRRORS; i++) {
1941 struct ofmirror *m = ofproto->mirrors[i];
1944 m->dup_mirrors = MIRROR_MASK_C(1) << i;
1948 for (i = 0; i < MAX_MIRRORS; i++) {
1949 struct ofmirror *m1 = ofproto->mirrors[i];
1956 for (j = i + 1; j < MAX_MIRRORS; j++) {
1957 struct ofmirror *m2 = ofproto->mirrors[j];
1959 if (m2 && m1->out == m2->out && m1->out_vlan == m2->out_vlan) {
1960 m1->dup_mirrors |= MIRROR_MASK_C(1) << j;
1961 m2->dup_mirrors |= m1->dup_mirrors;
1968 mirror_set(struct ofproto *ofproto_, void *aux,
1969 const struct ofproto_mirror_settings *s)
1971 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1972 mirror_mask_t mirror_bit;
1973 struct ofbundle *bundle;
1974 struct ofmirror *mirror;
1975 struct ofbundle *out;
1976 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
1977 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
1980 mirror = mirror_lookup(ofproto, aux);
1982 mirror_destroy(mirror);
1988 idx = mirror_scan(ofproto);
1990 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
1992 ofproto->up.name, MAX_MIRRORS, s->name);
1996 mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
1997 mirror->ofproto = ofproto;
2000 mirror->out_vlan = -1;
2001 mirror->name = NULL;
2004 if (!mirror->name || strcmp(s->name, mirror->name)) {
2006 mirror->name = xstrdup(s->name);
2009 /* Get the new configuration. */
2010 if (s->out_bundle) {
2011 out = bundle_lookup(ofproto, s->out_bundle);
2013 mirror_destroy(mirror);
2019 out_vlan = s->out_vlan;
2021 bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
2022 bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
2024 /* If the configuration has not changed, do nothing. */
2025 if (hmapx_equals(&srcs, &mirror->srcs)
2026 && hmapx_equals(&dsts, &mirror->dsts)
2027 && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
2028 && mirror->out == out
2029 && mirror->out_vlan == out_vlan)
2031 hmapx_destroy(&srcs);
2032 hmapx_destroy(&dsts);
2036 hmapx_swap(&srcs, &mirror->srcs);
2037 hmapx_destroy(&srcs);
2039 hmapx_swap(&dsts, &mirror->dsts);
2040 hmapx_destroy(&dsts);
2042 free(mirror->vlans);
2043 mirror->vlans = vlan_bitmap_clone(s->src_vlans);
2046 mirror->out_vlan = out_vlan;
2048 /* Update bundles. */
2049 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2050 HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
2051 if (hmapx_contains(&mirror->srcs, bundle)) {
2052 bundle->src_mirrors |= mirror_bit;
2054 bundle->src_mirrors &= ~mirror_bit;
2057 if (hmapx_contains(&mirror->dsts, bundle)) {
2058 bundle->dst_mirrors |= mirror_bit;
2060 bundle->dst_mirrors &= ~mirror_bit;
2063 if (mirror->out == bundle) {
2064 bundle->mirror_out |= mirror_bit;
2066 bundle->mirror_out &= ~mirror_bit;
2070 ofproto->need_revalidate = true;
2071 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2072 mirror_update_dups(ofproto);
2078 mirror_destroy(struct ofmirror *mirror)
2080 struct ofproto_dpif *ofproto;
2081 mirror_mask_t mirror_bit;
2082 struct ofbundle *bundle;
2088 ofproto = mirror->ofproto;
2089 ofproto->need_revalidate = true;
2090 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2092 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2093 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2094 bundle->src_mirrors &= ~mirror_bit;
2095 bundle->dst_mirrors &= ~mirror_bit;
2096 bundle->mirror_out &= ~mirror_bit;
2099 hmapx_destroy(&mirror->srcs);
2100 hmapx_destroy(&mirror->dsts);
2101 free(mirror->vlans);
2103 ofproto->mirrors[mirror->idx] = NULL;
2107 mirror_update_dups(ofproto);
2111 mirror_get_stats(struct ofproto *ofproto_, void *aux,
2112 uint64_t *packets, uint64_t *bytes)
2114 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2115 struct ofmirror *mirror = mirror_lookup(ofproto, aux);
2118 *packets = *bytes = UINT64_MAX;
2122 *packets = mirror->packet_count;
2123 *bytes = mirror->byte_count;
2129 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2131 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2132 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2133 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2139 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2141 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2142 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2143 return bundle && bundle->mirror_out != 0;
2147 forward_bpdu_changed(struct ofproto *ofproto_)
2149 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2150 /* Revalidate cached flows whenever forward_bpdu option changes. */
2151 ofproto->need_revalidate = true;
2155 set_mac_idle_time(struct ofproto *ofproto_, unsigned int idle_time)
2157 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2158 mac_learning_set_idle_time(ofproto->ml, idle_time);
2163 static struct ofport_dpif *
2164 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
2166 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2167 return ofport ? ofport_dpif_cast(ofport) : NULL;
2170 static struct ofport_dpif *
2171 get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
2173 return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
2177 ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
2178 struct dpif_port *dpif_port)
2180 ofproto_port->name = dpif_port->name;
2181 ofproto_port->type = dpif_port->type;
2182 ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
2186 port_run(struct ofport_dpif *ofport)
2188 bool enable = netdev_get_carrier(ofport->up.netdev);
2191 cfm_run(ofport->cfm);
2193 if (cfm_should_send_ccm(ofport->cfm)) {
2194 struct ofpbuf packet;
2196 ofpbuf_init(&packet, 0);
2197 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.opp.hw_addr);
2198 send_packet(ofport, &packet);
2199 ofpbuf_uninit(&packet);
2202 enable = enable && !cfm_get_fault(ofport->cfm)
2203 && cfm_get_opup(ofport->cfm);
2206 if (ofport->bundle) {
2207 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2210 if (ofport->may_enable != enable) {
2211 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2213 if (ofproto->has_bundle_action) {
2214 ofproto->need_revalidate = true;
2218 ofport->may_enable = enable;
2222 port_wait(struct ofport_dpif *ofport)
2225 cfm_wait(ofport->cfm);
2230 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2231 struct ofproto_port *ofproto_port)
2233 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2234 struct dpif_port dpif_port;
2237 error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
2239 ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
2245 port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
2247 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2251 error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
2253 *ofp_portp = odp_port_to_ofp_port(odp_port);
2259 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
2261 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2264 error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
2266 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
2268 /* The caller is going to close ofport->up.netdev. If this is a
2269 * bonded port, then the bond is using that netdev, so remove it
2270 * from the bond. The client will need to reconfigure everything
2271 * after deleting ports, so then the slave will get re-added. */
2272 bundle_remove(&ofport->up);
2279 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
2281 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2284 error = netdev_get_stats(ofport->up.netdev, stats);
2286 if (!error && ofport->odp_port == OVSP_LOCAL) {
2287 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2289 /* ofproto->stats.tx_packets represents packets that we created
2290 * internally and sent to some port (e.g. packets sent with
2291 * send_packet()). Account for them as if they had come from
2292 * OFPP_LOCAL and got forwarded. */
2294 if (stats->rx_packets != UINT64_MAX) {
2295 stats->rx_packets += ofproto->stats.tx_packets;
2298 if (stats->rx_bytes != UINT64_MAX) {
2299 stats->rx_bytes += ofproto->stats.tx_bytes;
2302 /* ofproto->stats.rx_packets represents packets that were received on
2303 * some port and we processed internally and dropped (e.g. STP).
2304 * Account fro them as if they had been forwarded to OFPP_LOCAL. */
2306 if (stats->tx_packets != UINT64_MAX) {
2307 stats->tx_packets += ofproto->stats.rx_packets;
2310 if (stats->tx_bytes != UINT64_MAX) {
2311 stats->tx_bytes += ofproto->stats.rx_bytes;
2318 /* Account packets for LOCAL port. */
2320 ofproto_update_local_port_stats(const struct ofproto *ofproto_,
2321 size_t tx_size, size_t rx_size)
2323 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2326 ofproto->stats.rx_packets++;
2327 ofproto->stats.rx_bytes += rx_size;
2330 ofproto->stats.tx_packets++;
2331 ofproto->stats.tx_bytes += tx_size;
2335 struct port_dump_state {
2336 struct dpif_port_dump dump;
2341 port_dump_start(const struct ofproto *ofproto_, void **statep)
2343 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2344 struct port_dump_state *state;
2346 *statep = state = xmalloc(sizeof *state);
2347 dpif_port_dump_start(&state->dump, ofproto->dpif);
2348 state->done = false;
2353 port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
2354 struct ofproto_port *port)
2356 struct port_dump_state *state = state_;
2357 struct dpif_port dpif_port;
2359 if (dpif_port_dump_next(&state->dump, &dpif_port)) {
2360 ofproto_port_from_dpif_port(port, &dpif_port);
2363 int error = dpif_port_dump_done(&state->dump);
2365 return error ? error : EOF;
2370 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
2372 struct port_dump_state *state = state_;
2375 dpif_port_dump_done(&state->dump);
2382 port_poll(const struct ofproto *ofproto_, char **devnamep)
2384 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2385 return dpif_port_poll(ofproto->dpif, devnamep);
2389 port_poll_wait(const struct ofproto *ofproto_)
2391 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2392 dpif_port_poll_wait(ofproto->dpif);
2396 port_is_lacp_current(const struct ofport *ofport_)
2398 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2399 return (ofport->bundle && ofport->bundle->lacp
2400 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
2404 /* Upcall handling. */
2406 /* Flow miss batching.
2408 * Some dpifs implement operations faster when you hand them off in a batch.
2409 * To allow batching, "struct flow_miss" queues the dpif-related work needed
2410 * for a given flow. Each "struct flow_miss" corresponds to sending one or
2411 * more packets, plus possibly installing the flow in the dpif.
2413 * So far we only batch the operations that affect flow setup time the most.
2414 * It's possible to batch more than that, but the benefit might be minimal. */
2416 struct hmap_node hmap_node;
2418 enum odp_key_fitness key_fitness;
2419 const struct nlattr *key;
2421 ovs_be16 initial_tci;
2422 struct list packets;
2425 struct flow_miss_op {
2426 struct dpif_op dpif_op;
2427 struct subfacet *subfacet;
2430 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
2431 * OpenFlow controller as necessary according to their individual
2432 * configurations. */
2434 send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
2435 const struct flow *flow)
2437 struct ofputil_packet_in pin;
2439 pin.packet = packet->data;
2440 pin.packet_len = packet->size;
2441 pin.total_len = packet->size;
2442 pin.reason = OFPR_NO_MATCH;
2447 pin.buffer_id = 0; /* not yet known */
2448 pin.send_len = 0; /* not used for flow table misses */
2450 flow_get_metadata(flow, &pin.fmd);
2452 /* Registers aren't meaningful on a miss. */
2453 memset(pin.fmd.reg_masks, 0, sizeof pin.fmd.reg_masks);
2455 connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow);
2459 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
2460 const struct ofpbuf *packet)
2462 struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
2468 if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
2470 cfm_process_heartbeat(ofport->cfm, packet);
2473 } else if (ofport->bundle && ofport->bundle->lacp
2474 && flow->dl_type == htons(ETH_TYPE_LACP)) {
2476 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
2479 } else if (ofproto->stp && stp_should_process_flow(flow)) {
2481 stp_process_packet(ofport, packet);
2488 static struct flow_miss *
2489 flow_miss_create(struct hmap *todo, const struct flow *flow,
2490 enum odp_key_fitness key_fitness,
2491 const struct nlattr *key, size_t key_len,
2492 ovs_be16 initial_tci)
2494 uint32_t hash = flow_hash(flow, 0);
2495 struct flow_miss *miss;
2497 HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
2498 if (flow_equal(&miss->flow, flow)) {
2503 miss = xmalloc(sizeof *miss);
2504 hmap_insert(todo, &miss->hmap_node, hash);
2506 miss->key_fitness = key_fitness;
2508 miss->key_len = key_len;
2509 miss->initial_tci = initial_tci;
2510 list_init(&miss->packets);
2515 handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
2516 struct flow_miss_op *ops, size_t *n_ops)
2518 const struct flow *flow = &miss->flow;
2519 struct ofpbuf *packet, *next_packet;
2520 struct subfacet *subfacet;
2521 struct facet *facet;
2523 facet = facet_lookup_valid(ofproto, flow);
2525 struct rule_dpif *rule;
2527 rule = rule_dpif_lookup(ofproto, flow, 0);
2529 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
2530 struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
2532 if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) {
2533 COVERAGE_INC(ofproto_dpif_no_packet_in);
2534 /* XXX install 'drop' flow entry */
2538 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
2542 LIST_FOR_EACH (packet, list_node, &miss->packets) {
2543 send_packet_in_miss(ofproto, packet, flow);
2549 facet = facet_create(rule, flow);
2552 subfacet = subfacet_create(facet,
2553 miss->key_fitness, miss->key, miss->key_len,
2556 LIST_FOR_EACH_SAFE (packet, next_packet, list_node, &miss->packets) {
2557 struct dpif_flow_stats stats;
2558 struct flow_miss_op *op;
2559 struct dpif_execute *execute;
2561 ofproto->n_matches++;
2563 if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
2565 * Extra-special case for fail-open mode.
2567 * We are in fail-open mode and the packet matched the fail-open
2568 * rule, but we are connected to a controller too. We should send
2569 * the packet up to the controller in the hope that it will try to
2570 * set up a flow and thereby allow us to exit fail-open.
2572 * See the top-level comment in fail-open.c for more information.
2574 send_packet_in_miss(ofproto, packet, flow);
2577 if (!facet->may_install || !subfacet->actions) {
2578 subfacet_make_actions(subfacet, packet);
2581 dpif_flow_stats_extract(&facet->flow, packet, &stats);
2582 subfacet_update_stats(subfacet, &stats);
2584 if (!subfacet->actions_len) {
2585 /* No actions to execute, so skip talking to the dpif. */
2589 if (flow->vlan_tci != subfacet->initial_tci) {
2590 /* This packet was received on a VLAN splinter port. We added
2591 * a VLAN to the packet to make the packet resemble the flow,
2592 * but the actions were composed assuming that the packet
2593 * contained no VLAN. So, we must remove the VLAN header from
2594 * the packet before trying to execute the actions. */
2595 eth_pop_vlan(packet);
2598 op = &ops[(*n_ops)++];
2599 execute = &op->dpif_op.u.execute;
2600 op->subfacet = subfacet;
2601 op->dpif_op.type = DPIF_OP_EXECUTE;
2602 execute->key = miss->key;
2603 execute->key_len = miss->key_len;
2604 execute->actions = (facet->may_install
2606 : xmemdup(subfacet->actions,
2607 subfacet->actions_len));
2608 execute->actions_len = subfacet->actions_len;
2609 execute->packet = packet;
2612 if (facet->may_install && subfacet->key_fitness != ODP_FIT_TOO_LITTLE) {
2613 struct flow_miss_op *op = &ops[(*n_ops)++];
2614 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
2616 op->subfacet = subfacet;
2617 op->dpif_op.type = DPIF_OP_FLOW_PUT;
2618 put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
2619 put->key = miss->key;
2620 put->key_len = miss->key_len;
2621 put->actions = subfacet->actions;
2622 put->actions_len = subfacet->actions_len;
2627 /* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
2628 * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
2629 * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
2630 * what a flow key should contain.
2632 * This function also includes some logic to help make VLAN splinters
2633 * transparent to the rest of the upcall processing logic. In particular, if
2634 * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
2635 * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
2636 * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
2638 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
2639 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
2640 * (This differs from the value returned in flow->vlan_tci only for packets
2641 * received on VLAN splinters.)
2643 static enum odp_key_fitness
2644 ofproto_dpif_extract_flow_key(const struct ofproto_dpif *ofproto,
2645 const struct nlattr *key, size_t key_len,
2646 struct flow *flow, ovs_be16 *initial_tci,
2647 struct ofpbuf *packet)
2649 enum odp_key_fitness fitness;
2653 fitness = odp_flow_key_to_flow(key, key_len, flow);
2654 if (fitness == ODP_FIT_ERROR) {
2657 *initial_tci = flow->vlan_tci;
2659 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
2661 /* Cause the flow to be processed as if it came in on the real device
2662 * with the VLAN device's VLAN ID. */
2663 flow->in_port = realdev;
2664 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
2666 /* Make the packet resemble the flow, so that it gets sent to an
2667 * OpenFlow controller properly, so that it looks correct for
2668 * sFlow, and so that flow_extract() will get the correct vlan_tci
2669 * if it is called on 'packet'.
2671 * The allocated space inside 'packet' probably also contains
2672 * 'key', that is, both 'packet' and 'key' are probably part of a
2673 * struct dpif_upcall (see the large comment on that structure
2674 * definition), so pushing data on 'packet' is in general not a
2675 * good idea since it could overwrite 'key' or free it as a side
2676 * effect. However, it's OK in this special case because we know
2677 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
2678 * will just overwrite the 4-byte "struct nlattr", which is fine
2679 * since we don't need that header anymore. */
2680 eth_push_vlan(packet, flow->vlan_tci);
2683 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
2684 if (fitness == ODP_FIT_PERFECT) {
2685 fitness = ODP_FIT_TOO_MUCH;
2693 handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
2696 struct dpif_upcall *upcall;
2697 struct flow_miss *miss, *next_miss;
2698 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
2699 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
2708 /* Construct the to-do list.
2710 * This just amounts to extracting the flow from each packet and sticking
2711 * the packets that have the same flow in the same "flow_miss" structure so
2712 * that we can process them together. */
2714 for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
2715 enum odp_key_fitness fitness;
2716 struct flow_miss *miss;
2717 ovs_be16 initial_tci;
2720 /* Obtain metadata and check userspace/kernel agreement on flow match,
2721 * then set 'flow''s header pointers. */
2722 fitness = ofproto_dpif_extract_flow_key(ofproto,
2723 upcall->key, upcall->key_len,
2724 &flow, &initial_tci,
2726 if (fitness == ODP_FIT_ERROR) {
2727 ofpbuf_delete(upcall->packet);
2730 flow_extract(upcall->packet, flow.skb_priority, flow.tun_id,
2731 flow.in_port, &flow);
2733 /* Handle 802.1ag, LACP, and STP specially. */
2734 if (process_special(ofproto, &flow, upcall->packet)) {
2735 ofproto_update_local_port_stats(&ofproto->up,
2736 0, upcall->packet->size);
2737 ofpbuf_delete(upcall->packet);
2738 ofproto->n_matches++;
2742 /* Add other packets to a to-do list. */
2743 miss = flow_miss_create(&todo, &flow, fitness,
2744 upcall->key, upcall->key_len, initial_tci);
2745 list_push_back(&miss->packets, &upcall->packet->list_node);
2748 /* Process each element in the to-do list, constructing the set of
2749 * operations to batch. */
2751 HMAP_FOR_EACH (miss, hmap_node, &todo) {
2752 handle_flow_miss(ofproto, miss, flow_miss_ops, &n_ops);
2754 assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
2756 /* Execute batch. */
2757 for (i = 0; i < n_ops; i++) {
2758 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
2760 dpif_operate(ofproto->dpif, dpif_ops, n_ops);
2762 /* Free memory and update facets. */
2763 for (i = 0; i < n_ops; i++) {
2764 struct flow_miss_op *op = &flow_miss_ops[i];
2765 struct dpif_execute *execute;
2767 switch (op->dpif_op.type) {
2768 case DPIF_OP_EXECUTE:
2769 execute = &op->dpif_op.u.execute;
2770 if (op->subfacet->actions != execute->actions) {
2771 free((struct nlattr *) execute->actions);
2775 case DPIF_OP_FLOW_PUT:
2776 if (!op->dpif_op.error) {
2777 op->subfacet->installed = true;
2782 HMAP_FOR_EACH_SAFE (miss, next_miss, hmap_node, &todo) {
2783 ofpbuf_list_delete(&miss->packets);
2784 hmap_remove(&todo, &miss->hmap_node);
2787 hmap_destroy(&todo);
2791 handle_userspace_upcall(struct ofproto_dpif *ofproto,
2792 struct dpif_upcall *upcall)
2794 struct user_action_cookie cookie;
2795 enum odp_key_fitness fitness;
2796 ovs_be16 initial_tci;
2799 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
2801 fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
2802 upcall->key_len, &flow,
2803 &initial_tci, upcall->packet);
2804 if (fitness == ODP_FIT_ERROR) {
2805 ofpbuf_delete(upcall->packet);
2809 if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
2810 if (ofproto->sflow) {
2811 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
2815 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
2817 ofpbuf_delete(upcall->packet);
2821 handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
2823 struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
2827 assert (max_batch <= FLOW_MISS_MAX_BATCH);
2830 for (i = 0; i < max_batch; i++) {
2831 struct dpif_upcall *upcall = &misses[n_misses];
2834 error = dpif_recv(ofproto->dpif, upcall);
2839 switch (upcall->type) {
2840 case DPIF_UC_ACTION:
2841 handle_userspace_upcall(ofproto, upcall);
2845 /* Handle it later. */
2849 case DPIF_N_UC_TYPES:
2851 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
2857 handle_miss_upcalls(ofproto, misses, n_misses);
2862 /* Flow expiration. */
2864 static int subfacet_max_idle(const struct ofproto_dpif *);
2865 static void update_stats(struct ofproto_dpif *);
2866 static void rule_expire(struct rule_dpif *);
2867 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
2869 /* This function is called periodically by run(). Its job is to collect
2870 * updates for the flows that have been installed into the datapath, most
2871 * importantly when they last were used, and then use that information to
2872 * expire flows that have not been used recently.
2874 * Returns the number of milliseconds after which it should be called again. */
2876 expire(struct ofproto_dpif *ofproto)
2878 struct rule_dpif *rule, *next_rule;
2879 struct oftable *table;
2882 /* Update stats for each flow in the datapath. */
2883 update_stats(ofproto);
2885 /* Expire subfacets that have been idle too long. */
2886 dp_max_idle = subfacet_max_idle(ofproto);
2887 expire_subfacets(ofproto, dp_max_idle);
2889 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
2890 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
2891 struct cls_cursor cursor;
2893 cls_cursor_init(&cursor, &table->cls, NULL);
2894 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
2899 /* All outstanding data in existing flows has been accounted, so it's a
2900 * good time to do bond rebalancing. */
2901 if (ofproto->has_bonded_bundles) {
2902 struct ofbundle *bundle;
2904 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2906 bond_rebalance(bundle->bond, &ofproto->revalidate_set);
2911 return MIN(dp_max_idle, 1000);
2914 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
2916 * This function also pushes statistics updates to rules which each facet
2917 * resubmits into. Generally these statistics will be accurate. However, if a
2918 * facet changes the rule it resubmits into at some time in between
2919 * update_stats() runs, it is possible that statistics accrued to the
2920 * old rule will be incorrectly attributed to the new rule. This could be
2921 * avoided by calling update_stats() whenever rules are created or
2922 * deleted. However, the performance impact of making so many calls to the
2923 * datapath do not justify the benefit of having perfectly accurate statistics.
2926 update_stats(struct ofproto_dpif *p)
2928 const struct dpif_flow_stats *stats;
2929 struct dpif_flow_dump dump;
2930 const struct nlattr *key;
2933 dpif_flow_dump_start(&dump, p->dpif);
2934 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
2935 struct subfacet *subfacet;
2937 subfacet = subfacet_find(p, key, key_len);
2938 if (subfacet && subfacet->installed) {
2939 struct facet *facet = subfacet->facet;
2941 if (stats->n_packets >= subfacet->dp_packet_count) {
2942 uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
2943 facet->packet_count += extra;
2945 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
2948 if (stats->n_bytes >= subfacet->dp_byte_count) {
2949 facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
2951 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
2954 subfacet->dp_packet_count = stats->n_packets;
2955 subfacet->dp_byte_count = stats->n_bytes;
2957 subfacet_update_time(subfacet, stats->used);
2958 facet_account(facet);
2959 facet_push_stats(facet);
2961 if (!VLOG_DROP_WARN(&rl)) {
2965 odp_flow_key_format(key, key_len, &s);
2966 VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
2970 COVERAGE_INC(facet_unexpected);
2971 /* There's a flow in the datapath that we know nothing about, or a
2972 * flow that shouldn't be installed but was anyway. Delete it. */
2973 dpif_flow_del(p->dpif, key, key_len, NULL);
2976 dpif_flow_dump_done(&dump);
2979 /* Calculates and returns the number of milliseconds of idle time after which
2980 * subfacets should expire from the datapath. When a subfacet expires, we fold
2981 * its statistics into its facet, and when a facet's last subfacet expires, we
2982 * fold its statistic into its rule. */
2984 subfacet_max_idle(const struct ofproto_dpif *ofproto)
2987 * Idle time histogram.
2989 * Most of the time a switch has a relatively small number of subfacets.
2990 * When this is the case we might as well keep statistics for all of them
2991 * in userspace and to cache them in the kernel datapath for performance as
2994 * As the number of subfacets increases, the memory required to maintain
2995 * statistics about them in userspace and in the kernel becomes
2996 * significant. However, with a large number of subfacets it is likely
2997 * that only a few of them are "heavy hitters" that consume a large amount
2998 * of bandwidth. At this point, only heavy hitters are worth caching in
2999 * the kernel and maintaining in userspaces; other subfacets we can
3002 * The technique used to compute the idle time is to build a histogram with
3003 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3004 * that is installed in the kernel gets dropped in the appropriate bucket.
3005 * After the histogram has been built, we compute the cutoff so that only
3006 * the most-recently-used 1% of subfacets (but at least
3007 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3008 * the most-recently-used bucket of subfacets is kept, so actually an
3009 * arbitrary number of subfacets can be kept in any given expiration run
3010 * (though the next run will delete most of those unless they receive
3013 * This requires a second pass through the subfacets, in addition to the
3014 * pass made by update_stats(), because the former function never looks at
3015 * uninstallable subfacets.
3017 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3018 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3019 int buckets[N_BUCKETS] = { 0 };
3020 int total, subtotal, bucket;
3021 struct subfacet *subfacet;
3025 total = hmap_count(&ofproto->subfacets);
3026 if (total <= ofproto->up.flow_eviction_threshold) {
3027 return N_BUCKETS * BUCKET_WIDTH;
3030 /* Build histogram. */
3032 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
3033 long long int idle = now - subfacet->used;
3034 int bucket = (idle <= 0 ? 0
3035 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3036 : (unsigned int) idle / BUCKET_WIDTH);
3040 /* Find the first bucket whose flows should be expired. */
3041 subtotal = bucket = 0;
3043 subtotal += buckets[bucket++];
3044 } while (bucket < N_BUCKETS &&
3045 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
3047 if (VLOG_IS_DBG_ENABLED()) {
3051 ds_put_cstr(&s, "keep");
3052 for (i = 0; i < N_BUCKETS; i++) {
3054 ds_put_cstr(&s, ", drop");
3057 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3060 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
3064 return bucket * BUCKET_WIDTH;
3068 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
3070 long long int cutoff = time_msec() - dp_max_idle;
3071 struct subfacet *subfacet, *next_subfacet;
3073 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3074 &ofproto->subfacets) {
3075 if (subfacet->used < cutoff) {
3076 subfacet_destroy(subfacet);
3081 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3082 * then delete it entirely. */
3084 rule_expire(struct rule_dpif *rule)
3086 struct facet *facet, *next_facet;
3090 /* Has 'rule' expired? */
3092 if (rule->up.hard_timeout
3093 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
3094 reason = OFPRR_HARD_TIMEOUT;
3095 } else if (rule->up.idle_timeout && list_is_empty(&rule->facets)
3096 && now > rule->up.used + rule->up.idle_timeout * 1000) {
3097 reason = OFPRR_IDLE_TIMEOUT;
3102 COVERAGE_INC(ofproto_dpif_expired);
3104 /* Update stats. (This is a no-op if the rule expired due to an idle
3105 * timeout, because that only happens when the rule has no facets left.) */
3106 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
3107 facet_remove(facet);
3110 /* Get rid of the rule. */
3111 ofproto_rule_expire(&rule->up, reason);
3116 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
3118 * The caller must already have determined that no facet with an identical
3119 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
3120 * the ofproto's classifier table.
3122 * The facet will initially have no subfacets. The caller should create (at
3123 * least) one subfacet with subfacet_create(). */
3124 static struct facet *
3125 facet_create(struct rule_dpif *rule, const struct flow *flow)
3127 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3128 struct facet *facet;
3130 facet = xzalloc(sizeof *facet);
3131 facet->used = time_msec();
3132 hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
3133 list_push_back(&rule->facets, &facet->list_node);
3135 facet->flow = *flow;
3136 list_init(&facet->subfacets);
3137 netflow_flow_init(&facet->nf_flow);
3138 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3144 facet_free(struct facet *facet)
3149 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
3150 * 'packet', which arrived on 'in_port'.
3152 * Takes ownership of 'packet'. */
3154 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
3155 const struct nlattr *odp_actions, size_t actions_len,
3156 struct ofpbuf *packet)
3158 struct odputil_keybuf keybuf;
3162 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
3163 odp_flow_key_from_flow(&key, flow);
3165 error = dpif_execute(ofproto->dpif, key.data, key.size,
3166 odp_actions, actions_len, packet);
3168 ofpbuf_delete(packet);
3172 /* Remove 'facet' from 'ofproto' and free up the associated memory:
3174 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3175 * rule's statistics, via subfacet_uninstall().
3177 * - Removes 'facet' from its rule and from ofproto->facets.
3180 facet_remove(struct facet *facet)
3182 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3183 struct subfacet *subfacet, *next_subfacet;
3185 assert(!list_is_empty(&facet->subfacets));
3187 /* First uninstall all of the subfacets to get final statistics. */
3188 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3189 subfacet_uninstall(subfacet);
3192 /* Flush the final stats to the rule.
3194 * This might require us to have at least one subfacet around so that we
3195 * can use its actions for accounting in facet_account(), which is why we
3196 * have uninstalled but not yet destroyed the subfacets. */
3197 facet_flush_stats(facet);
3199 /* Now we're really all done so destroy everything. */
3200 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
3201 &facet->subfacets) {
3202 subfacet_destroy__(subfacet);
3204 hmap_remove(&ofproto->facets, &facet->hmap_node);
3205 list_remove(&facet->list_node);
3210 facet_account(struct facet *facet)
3212 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3214 struct subfacet *subfacet;
3215 const struct nlattr *a;
3219 if (facet->byte_count <= facet->accounted_bytes) {
3222 n_bytes = facet->byte_count - facet->accounted_bytes;
3223 facet->accounted_bytes = facet->byte_count;
3225 /* Feed information from the active flows back into the learning table to
3226 * ensure that table is always in sync with what is actually flowing
3227 * through the datapath. */
3228 if (facet->has_learn || facet->has_normal) {
3229 struct action_xlate_ctx ctx;
3231 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3232 facet->flow.vlan_tci,
3234 ctx.may_learn = true;
3235 ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
3236 facet->rule->up.n_actions));
3239 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
3243 /* This loop feeds byte counters to bond_account() for rebalancing to use
3244 * as a basis. We also need to track the actual VLAN on which the packet
3245 * is going to be sent to ensure that it matches the one passed to
3246 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3249 * We use the actions from an arbitrary subfacet because they should all
3250 * be equally valid for our purpose. */
3251 subfacet = CONTAINER_OF(list_front(&facet->subfacets),
3252 struct subfacet, list_node);
3253 vlan_tci = facet->flow.vlan_tci;
3254 NL_ATTR_FOR_EACH_UNSAFE (a, left,
3255 subfacet->actions, subfacet->actions_len) {
3256 const struct ovs_action_push_vlan *vlan;
3257 struct ofport_dpif *port;
3259 switch (nl_attr_type(a)) {
3260 case OVS_ACTION_ATTR_OUTPUT:
3261 port = get_odp_port(ofproto, nl_attr_get_u32(a));
3262 if (port && port->bundle && port->bundle->bond) {
3263 bond_account(port->bundle->bond, &facet->flow,
3264 vlan_tci_to_vid(vlan_tci), n_bytes);
3268 case OVS_ACTION_ATTR_POP_VLAN:
3269 vlan_tci = htons(0);
3272 case OVS_ACTION_ATTR_PUSH_VLAN:
3273 vlan = nl_attr_get(a);
3274 vlan_tci = vlan->vlan_tci;
3280 /* Returns true if the only action for 'facet' is to send to the controller.
3281 * (We don't report NetFlow expiration messages for such facets because they
3282 * are just part of the control logic for the network, not real traffic). */
3284 facet_is_controller_flow(struct facet *facet)
3287 && facet->rule->up.n_actions == 1
3288 && action_outputs_to_port(&facet->rule->up.actions[0],
3289 htons(OFPP_CONTROLLER)));
3292 /* Folds all of 'facet''s statistics into its rule. Also updates the
3293 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
3294 * 'facet''s statistics in the datapath should have been zeroed and folded into
3295 * its packet and byte counts before this function is called. */
3297 facet_flush_stats(struct facet *facet)
3299 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3300 struct subfacet *subfacet;
3302 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3303 assert(!subfacet->dp_byte_count);
3304 assert(!subfacet->dp_packet_count);
3307 facet_push_stats(facet);
3308 facet_account(facet);
3310 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
3311 struct ofexpired expired;
3312 expired.flow = facet->flow;
3313 expired.packet_count = facet->packet_count;
3314 expired.byte_count = facet->byte_count;
3315 expired.used = facet->used;
3316 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
3319 facet->rule->packet_count += facet->packet_count;
3320 facet->rule->byte_count += facet->byte_count;
3322 /* Reset counters to prevent double counting if 'facet' ever gets
3324 facet_reset_counters(facet);
3326 netflow_flow_clear(&facet->nf_flow);
3329 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3330 * Returns it if found, otherwise a null pointer.
3332 * The returned facet might need revalidation; use facet_lookup_valid()
3333 * instead if that is important. */
3334 static struct facet *
3335 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
3337 struct facet *facet;
3339 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
3341 if (flow_equal(flow, &facet->flow)) {
3349 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3350 * Returns it if found, otherwise a null pointer.
3352 * The returned facet is guaranteed to be valid. */
3353 static struct facet *
3354 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
3356 struct facet *facet = facet_find(ofproto, flow);
3358 /* The facet we found might not be valid, since we could be in need of
3359 * revalidation. If it is not valid, don't return it. */
3361 && (ofproto->need_revalidate
3362 || tag_set_intersects(&ofproto->revalidate_set, facet->tags))
3363 && !facet_revalidate(facet)) {
3364 COVERAGE_INC(facet_invalidated);
3372 facet_check_consistency(struct facet *facet)
3374 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3376 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3378 struct rule_dpif *rule;
3379 struct subfacet *subfacet;
3380 bool may_log = false;
3383 /* Check the rule for consistency. */
3384 rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3386 if (!VLOG_DROP_WARN(&rl)) {
3387 char *s = flow_to_string(&facet->flow);
3388 VLOG_WARN("%s: facet should not exist", s);
3392 } else if (rule != facet->rule) {
3393 may_log = !VLOG_DROP_WARN(&rl);
3399 flow_format(&s, &facet->flow);
3400 ds_put_format(&s, ": facet associated with wrong rule (was "
3401 "table=%"PRIu8",", facet->rule->up.table_id);
3402 cls_rule_format(&facet->rule->up.cr, &s);
3403 ds_put_format(&s, ") (should have been table=%"PRIu8",",
3405 cls_rule_format(&rule->up.cr, &s);
3406 ds_put_char(&s, ')');
3408 VLOG_WARN("%s", ds_cstr(&s));
3415 /* Check the datapath actions for consistency. */
3416 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3417 struct action_xlate_ctx ctx;
3418 struct ofpbuf *odp_actions;
3419 bool actions_changed;
3420 bool should_install;
3422 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3423 subfacet->initial_tci, rule, NULL);
3424 odp_actions = xlate_actions(&ctx, rule->up.actions,
3425 rule->up.n_actions);
3427 should_install = (ctx.may_set_up_flow
3428 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3429 if (!should_install && !subfacet->installed) {
3430 /* The actions for uninstallable flows may vary from one packet to
3431 * the next, so don't compare the actions. */
3435 actions_changed = (subfacet->actions_len != odp_actions->size
3436 || memcmp(subfacet->actions, odp_actions->data,
3437 subfacet->actions_len));
3438 if (should_install != subfacet->installed || actions_changed) {
3440 may_log = !VLOG_DROP_WARN(&rl);
3445 struct odputil_keybuf keybuf;
3450 subfacet_get_key(subfacet, &keybuf, &key);
3451 odp_flow_key_format(key.data, key.size, &s);
3453 ds_put_cstr(&s, ": inconsistency in subfacet");
3454 if (should_install != subfacet->installed) {
3455 enum odp_key_fitness fitness = subfacet->key_fitness;
3457 ds_put_format(&s, " (should%s have been installed)",
3458 should_install ? "" : " not");
3459 ds_put_format(&s, " (may_set_up_flow=%s, fitness=%s)",
3460 ctx.may_set_up_flow ? "true" : "false",
3461 odp_key_fitness_to_string(fitness));
3463 if (actions_changed) {
3464 ds_put_cstr(&s, " (actions were: ");
3465 format_odp_actions(&s, subfacet->actions,
3466 subfacet->actions_len);
3467 ds_put_cstr(&s, ") (correct actions: ");
3468 format_odp_actions(&s, odp_actions->data,
3470 ds_put_char(&s, ')');
3472 ds_put_cstr(&s, " (actions: ");
3473 format_odp_actions(&s, subfacet->actions,
3474 subfacet->actions_len);
3475 ds_put_char(&s, ')');
3477 VLOG_WARN("%s", ds_cstr(&s));
3483 ofpbuf_delete(odp_actions);
3489 /* Re-searches the classifier for 'facet':
3491 * - If the rule found is different from 'facet''s current rule, moves
3492 * 'facet' to the new rule and recompiles its actions.
3494 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
3495 * where it is and recompiles its actions anyway.
3497 * - If there is none, destroys 'facet'.
3499 * Returns true if 'facet' still exists, false if it has been destroyed. */
3501 facet_revalidate(struct facet *facet)
3503 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3505 struct nlattr *odp_actions;
3508 struct actions *new_actions;
3510 struct action_xlate_ctx ctx;
3511 struct rule_dpif *new_rule;
3512 struct subfacet *subfacet;
3513 bool actions_changed;
3516 COVERAGE_INC(facet_revalidate);
3518 /* Determine the new rule. */
3519 new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3521 /* No new rule, so delete the facet. */
3522 facet_remove(facet);
3526 /* Calculate new datapath actions.
3528 * We do not modify any 'facet' state yet, because we might need to, e.g.,
3529 * emit a NetFlow expiration and, if so, we need to have the old state
3530 * around to properly compose it. */
3532 /* If the datapath actions changed or the installability changed,
3533 * then we need to talk to the datapath. */
3536 memset(&ctx, 0, sizeof ctx);
3537 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3538 struct ofpbuf *odp_actions;
3539 bool should_install;
3541 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3542 subfacet->initial_tci, new_rule, NULL);
3543 odp_actions = xlate_actions(&ctx, new_rule->up.actions,
3544 new_rule->up.n_actions);
3545 actions_changed = (subfacet->actions_len != odp_actions->size
3546 || memcmp(subfacet->actions, odp_actions->data,
3547 subfacet->actions_len));
3549 should_install = (ctx.may_set_up_flow
3550 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3551 if (actions_changed || should_install != subfacet->installed) {
3552 if (should_install) {
3553 struct dpif_flow_stats stats;
3555 subfacet_install(subfacet,
3556 odp_actions->data, odp_actions->size, &stats);
3557 subfacet_update_stats(subfacet, &stats);
3559 subfacet_uninstall(subfacet);
3563 new_actions = xcalloc(list_size(&facet->subfacets),
3564 sizeof *new_actions);
3566 new_actions[i].odp_actions = xmemdup(odp_actions->data,
3568 new_actions[i].actions_len = odp_actions->size;
3571 ofpbuf_delete(odp_actions);
3575 facet_flush_stats(facet);
3578 /* Update 'facet' now that we've taken care of all the old state. */
3579 facet->tags = ctx.tags;
3580 facet->nf_flow.output_iface = ctx.nf_output_iface;
3581 facet->may_install = ctx.may_set_up_flow;
3582 facet->has_learn = ctx.has_learn;
3583 facet->has_normal = ctx.has_normal;
3584 facet->mirrors = ctx.mirrors;
3587 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3588 if (new_actions[i].odp_actions) {
3589 free(subfacet->actions);
3590 subfacet->actions = new_actions[i].odp_actions;
3591 subfacet->actions_len = new_actions[i].actions_len;
3597 if (facet->rule != new_rule) {
3598 COVERAGE_INC(facet_changed_rule);
3599 list_remove(&facet->list_node);
3600 list_push_back(&new_rule->facets, &facet->list_node);
3601 facet->rule = new_rule;
3602 facet->used = new_rule->up.created;
3603 facet->prev_used = facet->used;
3609 /* Updates 'facet''s used time. Caller is responsible for calling
3610 * facet_push_stats() to update the flows which 'facet' resubmits into. */
3612 facet_update_time(struct facet *facet, long long int used)
3614 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3615 if (used > facet->used) {
3617 ofproto_rule_update_used(&facet->rule->up, used);
3618 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
3623 facet_reset_counters(struct facet *facet)
3625 facet->packet_count = 0;
3626 facet->byte_count = 0;
3627 facet->prev_packet_count = 0;
3628 facet->prev_byte_count = 0;
3629 facet->accounted_bytes = 0;
3633 facet_push_stats(struct facet *facet)
3635 uint64_t new_packets, new_bytes;
3637 assert(facet->packet_count >= facet->prev_packet_count);
3638 assert(facet->byte_count >= facet->prev_byte_count);
3639 assert(facet->used >= facet->prev_used);
3641 new_packets = facet->packet_count - facet->prev_packet_count;
3642 new_bytes = facet->byte_count - facet->prev_byte_count;
3644 if (new_packets || new_bytes || facet->used > facet->prev_used) {
3645 facet->prev_packet_count = facet->packet_count;
3646 facet->prev_byte_count = facet->byte_count;
3647 facet->prev_used = facet->used;
3649 flow_push_stats(facet->rule, &facet->flow,
3650 new_packets, new_bytes, facet->used);
3652 update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
3653 facet->mirrors, new_packets, new_bytes);
3657 struct ofproto_push {
3658 struct action_xlate_ctx ctx;
3665 push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
3667 struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
3670 rule->packet_count += push->packets;
3671 rule->byte_count += push->bytes;
3672 ofproto_rule_update_used(&rule->up, push->used);
3676 /* Pushes flow statistics to the rules which 'flow' resubmits into given
3677 * 'rule''s actions and mirrors. */
3679 flow_push_stats(struct rule_dpif *rule,
3680 const struct flow *flow, uint64_t packets, uint64_t bytes,
3683 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3684 struct ofproto_push push;
3686 push.packets = packets;
3690 ofproto_rule_update_used(&rule->up, used);
3692 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, rule,
3694 push.ctx.resubmit_hook = push_resubmit;
3695 ofpbuf_delete(xlate_actions(&push.ctx,
3696 rule->up.actions, rule->up.n_actions));
3701 static struct subfacet *
3702 subfacet_find__(struct ofproto_dpif *ofproto,
3703 const struct nlattr *key, size_t key_len, uint32_t key_hash,
3704 const struct flow *flow)
3706 struct subfacet *subfacet;
3708 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
3709 &ofproto->subfacets) {
3711 ? (subfacet->key_len == key_len
3712 && !memcmp(key, subfacet->key, key_len))
3713 : flow_equal(flow, &subfacet->facet->flow)) {
3721 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
3722 * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if
3723 * there is one, otherwise creates and returns a new subfacet.
3725 * If the returned subfacet is new, then subfacet->actions will be NULL, in
3726 * which case the caller must populate the actions with
3727 * subfacet_make_actions(). */
3728 static struct subfacet *
3729 subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
3730 const struct nlattr *key, size_t key_len, ovs_be16 initial_tci)
3732 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3733 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3734 struct subfacet *subfacet;
3736 subfacet = subfacet_find__(ofproto, key, key_len, key_hash, &facet->flow);
3738 if (subfacet->facet == facet) {
3742 /* This shouldn't happen. */
3743 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
3744 subfacet_destroy(subfacet);
3747 subfacet = xzalloc(sizeof *subfacet);
3748 hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
3749 list_push_back(&facet->subfacets, &subfacet->list_node);
3750 subfacet->facet = facet;
3751 subfacet->used = time_msec();
3752 subfacet->key_fitness = key_fitness;
3753 if (key_fitness != ODP_FIT_PERFECT) {
3754 subfacet->key = xmemdup(key, key_len);
3755 subfacet->key_len = key_len;
3757 subfacet->installed = false;
3758 subfacet->initial_tci = initial_tci;
3763 /* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
3764 * 'flow'. Returns the subfacet if one exists, otherwise NULL. */
3765 static struct subfacet *
3766 subfacet_find(struct ofproto_dpif *ofproto,
3767 const struct nlattr *key, size_t key_len)
3769 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3770 enum odp_key_fitness fitness;
3773 fitness = odp_flow_key_to_flow(key, key_len, &flow);
3774 if (fitness == ODP_FIT_ERROR) {
3778 return subfacet_find__(ofproto, key, key_len, key_hash, &flow);
3781 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
3782 * its facet within 'ofproto', and frees it. */
3784 subfacet_destroy__(struct subfacet *subfacet)
3786 struct facet *facet = subfacet->facet;
3787 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3789 subfacet_uninstall(subfacet);
3790 hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
3791 list_remove(&subfacet->list_node);
3792 free(subfacet->key);
3793 free(subfacet->actions);
3797 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
3798 * last remaining subfacet in its facet destroys the facet too. */
3800 subfacet_destroy(struct subfacet *subfacet)
3802 struct facet *facet = subfacet->facet;
3804 if (list_is_singleton(&facet->subfacets)) {
3805 /* facet_remove() needs at least one subfacet (it will remove it). */
3806 facet_remove(facet);
3808 subfacet_destroy__(subfacet);
3812 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
3813 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
3814 * for use as temporary storage. */
3816 subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
3819 if (!subfacet->key) {
3820 ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
3821 odp_flow_key_from_flow(key, &subfacet->facet->flow);
3823 ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
3827 /* Composes the datapath actions for 'subfacet' based on its rule's actions. */
3829 subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet)
3831 struct facet *facet = subfacet->facet;
3832 struct rule_dpif *rule = facet->rule;
3833 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3834 struct ofpbuf *odp_actions;
3835 struct action_xlate_ctx ctx;
3837 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
3839 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
3840 facet->tags = ctx.tags;
3841 facet->may_install = ctx.may_set_up_flow;
3842 facet->has_learn = ctx.has_learn;
3843 facet->has_normal = ctx.has_normal;
3844 facet->nf_flow.output_iface = ctx.nf_output_iface;
3845 facet->mirrors = ctx.mirrors;
3847 if (subfacet->actions_len != odp_actions->size
3848 || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
3849 free(subfacet->actions);
3850 subfacet->actions_len = odp_actions->size;
3851 subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
3854 ofpbuf_delete(odp_actions);
3857 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
3858 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
3859 * in the datapath will be zeroed and 'stats' will be updated with traffic new
3860 * since 'subfacet' was last updated.
3862 * Returns 0 if successful, otherwise a positive errno value. */
3864 subfacet_install(struct subfacet *subfacet,
3865 const struct nlattr *actions, size_t actions_len,
3866 struct dpif_flow_stats *stats)
3868 struct facet *facet = subfacet->facet;
3869 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3870 struct odputil_keybuf keybuf;
3871 enum dpif_flow_put_flags flags;
3875 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
3877 flags |= DPIF_FP_ZERO_STATS;
3880 subfacet_get_key(subfacet, &keybuf, &key);
3881 ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
3882 actions, actions_len, stats);
3885 subfacet_reset_dp_stats(subfacet, stats);
3891 /* If 'subfacet' is installed in the datapath, uninstalls it. */
3893 subfacet_uninstall(struct subfacet *subfacet)
3895 if (subfacet->installed) {
3896 struct rule_dpif *rule = subfacet->facet->rule;
3897 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3898 struct odputil_keybuf keybuf;
3899 struct dpif_flow_stats stats;
3903 subfacet_get_key(subfacet, &keybuf, &key);
3904 error = dpif_flow_del(ofproto->dpif, key.data, key.size, &stats);
3905 subfacet_reset_dp_stats(subfacet, &stats);
3907 subfacet_update_stats(subfacet, &stats);
3909 subfacet->installed = false;
3911 assert(subfacet->dp_packet_count == 0);
3912 assert(subfacet->dp_byte_count == 0);
3916 /* Resets 'subfacet''s datapath statistics counters. This should be called
3917 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
3918 * non-null, it should contain the statistics returned by dpif when 'subfacet'
3919 * was reset in the datapath. 'stats' will be modified to include only
3920 * statistics new since 'subfacet' was last updated. */
3922 subfacet_reset_dp_stats(struct subfacet *subfacet,
3923 struct dpif_flow_stats *stats)
3926 && subfacet->dp_packet_count <= stats->n_packets
3927 && subfacet->dp_byte_count <= stats->n_bytes) {
3928 stats->n_packets -= subfacet->dp_packet_count;
3929 stats->n_bytes -= subfacet->dp_byte_count;
3932 subfacet->dp_packet_count = 0;
3933 subfacet->dp_byte_count = 0;
3936 /* Updates 'subfacet''s used time. The caller is responsible for calling
3937 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
3939 subfacet_update_time(struct subfacet *subfacet, long long int used)
3941 if (used > subfacet->used) {
3942 subfacet->used = used;
3943 facet_update_time(subfacet->facet, used);
3947 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
3949 * Because of the meaning of a subfacet's counters, it only makes sense to do
3950 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
3951 * represents a packet that was sent by hand or if it represents statistics
3952 * that have been cleared out of the datapath. */
3954 subfacet_update_stats(struct subfacet *subfacet,
3955 const struct dpif_flow_stats *stats)
3957 if (stats->n_packets || stats->used > subfacet->used) {
3958 struct facet *facet = subfacet->facet;
3960 subfacet_update_time(subfacet, stats->used);
3961 facet->packet_count += stats->n_packets;
3962 facet->byte_count += stats->n_bytes;
3963 facet_push_stats(facet);
3964 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
3970 static struct rule_dpif *
3971 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
3974 struct cls_rule *cls_rule;
3975 struct classifier *cls;
3977 if (table_id >= N_TABLES) {
3981 cls = &ofproto->up.tables[table_id].cls;
3982 if (flow->nw_frag & FLOW_NW_FRAG_ANY
3983 && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
3984 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
3985 * are unavailable. */
3986 struct flow ofpc_normal_flow = *flow;
3987 ofpc_normal_flow.tp_src = htons(0);
3988 ofpc_normal_flow.tp_dst = htons(0);
3989 cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
3991 cls_rule = classifier_lookup(cls, flow);
3993 return rule_dpif_cast(rule_from_cls_rule(cls_rule));
3997 complete_operation(struct rule_dpif *rule)
3999 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4001 rule_invalidate(rule);
4003 struct dpif_completion *c = xmalloc(sizeof *c);
4004 c->op = rule->up.pending;
4005 list_push_back(&ofproto->completions, &c->list_node);
4007 ofoperation_complete(rule->up.pending, 0);
4011 static struct rule *
4014 struct rule_dpif *rule = xmalloc(sizeof *rule);
4019 rule_dealloc(struct rule *rule_)
4021 struct rule_dpif *rule = rule_dpif_cast(rule_);
4026 rule_construct(struct rule *rule_)
4028 struct rule_dpif *rule = rule_dpif_cast(rule_);
4029 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4030 struct rule_dpif *victim;
4034 error = validate_actions(rule->up.actions, rule->up.n_actions,
4035 &rule->up.cr.flow, ofproto->max_ports);
4040 rule->packet_count = 0;
4041 rule->byte_count = 0;
4043 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
4044 if (victim && !list_is_empty(&victim->facets)) {
4045 struct facet *facet;
4047 rule->facets = victim->facets;
4048 list_moved(&rule->facets);
4049 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4050 /* XXX: We're only clearing our local counters here. It's possible
4051 * that quite a few packets are unaccounted for in the datapath
4052 * statistics. These will be accounted to the new rule instead of
4053 * cleared as required. This could be fixed by clearing out the
4054 * datapath statistics for this facet, but currently it doesn't
4056 facet_reset_counters(facet);
4060 /* Must avoid list_moved() in this case. */
4061 list_init(&rule->facets);
4064 table_id = rule->up.table_id;
4065 rule->tag = (victim ? victim->tag
4067 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
4068 ofproto->tables[table_id].basis));
4070 complete_operation(rule);
4075 rule_destruct(struct rule *rule_)
4077 struct rule_dpif *rule = rule_dpif_cast(rule_);
4078 struct facet *facet, *next_facet;
4080 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
4081 facet_revalidate(facet);
4084 complete_operation(rule);
4088 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4090 struct rule_dpif *rule = rule_dpif_cast(rule_);
4091 struct facet *facet;
4093 /* Start from historical data for 'rule' itself that are no longer tracked
4094 * in facets. This counts, for example, facets that have expired. */
4095 *packets = rule->packet_count;
4096 *bytes = rule->byte_count;
4098 /* Add any statistics that are tracked by facets. This includes
4099 * statistical data recently updated by ofproto_update_stats() as well as
4100 * stats for packets that were executed "by hand" via dpif_execute(). */
4101 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4102 *packets += facet->packet_count;
4103 *bytes += facet->byte_count;
4108 rule_execute(struct rule *rule_, const struct flow *flow,
4109 struct ofpbuf *packet)
4111 struct rule_dpif *rule = rule_dpif_cast(rule_);
4112 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4113 struct action_xlate_ctx ctx;
4114 struct ofpbuf *odp_actions;
4117 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
4119 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
4120 size = packet->size;
4121 if (execute_odp_actions(ofproto, flow, odp_actions->data,
4122 odp_actions->size, packet)) {
4123 rule->packet_count++;
4124 rule->byte_count += size;
4125 flow_push_stats(rule, flow, 1, size, time_msec());
4127 ofpbuf_delete(odp_actions);
4133 rule_modify_actions(struct rule *rule_)
4135 struct rule_dpif *rule = rule_dpif_cast(rule_);
4136 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4139 error = validate_actions(rule->up.actions, rule->up.n_actions,
4140 &rule->up.cr.flow, ofproto->max_ports);
4142 ofoperation_complete(rule->up.pending, error);
4146 complete_operation(rule);
4149 /* Sends 'packet' out 'ofport'.
4150 * May modify 'packet'.
4151 * Returns 0 if successful, otherwise a positive errno value. */
4153 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4155 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4156 struct ofpbuf key, odp_actions;
4157 struct odputil_keybuf keybuf;
4162 flow_extract((struct ofpbuf *) packet, 0, 0, 0, &flow);
4163 odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
4165 if (odp_port != ofport->odp_port) {
4166 eth_pop_vlan(packet);
4167 flow.vlan_tci = htons(0);
4170 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4171 odp_flow_key_from_flow(&key, &flow);
4173 ofpbuf_init(&odp_actions, 32);
4174 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
4176 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
4177 error = dpif_execute(ofproto->dpif,
4179 odp_actions.data, odp_actions.size,
4181 ofpbuf_uninit(&odp_actions);
4184 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
4185 ofproto->up.name, odp_port, strerror(error));
4187 ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0);
4191 /* OpenFlow to datapath action translation. */
4193 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
4194 struct action_xlate_ctx *ctx);
4195 static void xlate_normal(struct action_xlate_ctx *);
4198 put_userspace_action(const struct ofproto_dpif *ofproto,
4199 struct ofpbuf *odp_actions,
4200 const struct flow *flow,
4201 const struct user_action_cookie *cookie)
4205 pid = dpif_port_get_pid(ofproto->dpif,
4206 ofp_port_to_odp_port(flow->in_port));
4208 return odp_put_userspace_action(pid, cookie, odp_actions);
4211 /* Compose SAMPLE action for sFlow. */
4213 compose_sflow_action(const struct ofproto_dpif *ofproto,
4214 struct ofpbuf *odp_actions,
4215 const struct flow *flow,
4218 uint32_t port_ifindex;
4219 uint32_t probability;
4220 struct user_action_cookie cookie;
4221 size_t sample_offset, actions_offset;
4222 int cookie_offset, n_output;
4224 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
4228 if (odp_port == OVSP_NONE) {
4232 port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
4236 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
4238 /* Number of packets out of UINT_MAX to sample. */
4239 probability = dpif_sflow_get_probability(ofproto->sflow);
4240 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
4242 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
4244 cookie.type = USER_ACTION_COOKIE_SFLOW;
4245 cookie.data = port_ifindex;
4246 cookie.n_output = n_output;
4247 cookie.vlan_tci = 0;
4248 cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
4250 nl_msg_end_nested(odp_actions, actions_offset);
4251 nl_msg_end_nested(odp_actions, sample_offset);
4252 return cookie_offset;
4255 /* SAMPLE action must be first action in any given list of actions.
4256 * At this point we do not have all information required to build it. So try to
4257 * build sample action as complete as possible. */
4259 add_sflow_action(struct action_xlate_ctx *ctx)
4261 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
4263 &ctx->flow, OVSP_NONE);
4264 ctx->sflow_odp_port = 0;
4265 ctx->sflow_n_outputs = 0;
4268 /* Fix SAMPLE action according to data collected while composing ODP actions.
4269 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
4270 * USERSPACE action's user-cookie which is required for sflow. */
4272 fix_sflow_action(struct action_xlate_ctx *ctx)
4274 const struct flow *base = &ctx->base_flow;
4275 struct user_action_cookie *cookie;
4277 if (!ctx->user_cookie_offset) {
4281 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
4283 assert(cookie != NULL);
4284 assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
4286 if (ctx->sflow_n_outputs) {
4287 cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
4288 ctx->sflow_odp_port);
4290 if (ctx->sflow_n_outputs >= 255) {
4291 cookie->n_output = 255;
4293 cookie->n_output = ctx->sflow_n_outputs;
4295 cookie->vlan_tci = base->vlan_tci;
4299 compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
4302 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
4303 uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
4304 ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
4305 uint8_t flow_nw_tos = ctx->flow.nw_tos;
4309 struct priority_to_dscp *pdscp;
4311 if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)
4312 || (check_stp && !stp_forward_in_state(ofport->stp_state))) {
4316 pdscp = get_priority(ofport, ctx->flow.skb_priority);
4318 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4319 ctx->flow.nw_tos |= pdscp->dscp;
4322 /* We may not have an ofport record for this port, but it doesn't hurt
4323 * to allow forwarding to it anyhow. Maybe such a port will appear
4324 * later and we're pre-populating the flow table. */
4327 out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
4328 ctx->flow.vlan_tci);
4329 if (out_port != odp_port) {
4330 ctx->flow.vlan_tci = htons(0);
4332 commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
4333 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
4335 ctx->sflow_odp_port = odp_port;
4336 ctx->sflow_n_outputs++;
4337 ctx->nf_output_iface = ofp_port;
4338 ctx->flow.vlan_tci = flow_vlan_tci;
4339 ctx->flow.nw_tos = flow_nw_tos;
4343 compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
4345 compose_output_action__(ctx, ofp_port, true);
4349 xlate_table_action(struct action_xlate_ctx *ctx,
4350 uint16_t in_port, uint8_t table_id)
4352 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
4353 struct ofproto_dpif *ofproto = ctx->ofproto;
4354 struct rule_dpif *rule;
4355 uint16_t old_in_port;
4356 uint8_t old_table_id;
4358 old_table_id = ctx->table_id;
4359 ctx->table_id = table_id;
4361 /* Look up a flow with 'in_port' as the input port. */
4362 old_in_port = ctx->flow.in_port;
4363 ctx->flow.in_port = in_port;
4364 rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
4367 if (table_id > 0 && table_id < N_TABLES) {
4368 struct table_dpif *table = &ofproto->tables[table_id];
4369 if (table->other_table) {
4372 : rule_calculate_tag(&ctx->flow,
4373 &table->other_table->wc,
4378 /* Restore the original input port. Otherwise OFPP_NORMAL and
4379 * OFPP_IN_PORT will have surprising behavior. */
4380 ctx->flow.in_port = old_in_port;
4382 if (ctx->resubmit_hook) {
4383 ctx->resubmit_hook(ctx, rule);
4387 struct rule_dpif *old_rule = ctx->rule;
4391 do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
4392 ctx->rule = old_rule;
4396 ctx->table_id = old_table_id;
4398 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
4400 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
4401 MAX_RESUBMIT_RECURSION);
4406 xlate_resubmit_table(struct action_xlate_ctx *ctx,
4407 const struct nx_action_resubmit *nar)
4412 in_port = (nar->in_port == htons(OFPP_IN_PORT)
4414 : ntohs(nar->in_port));
4415 table_id = nar->table == 255 ? ctx->table_id : nar->table;
4417 xlate_table_action(ctx, in_port, table_id);
4421 flood_packets(struct action_xlate_ctx *ctx, bool all)
4423 struct ofport_dpif *ofport;
4425 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
4426 uint16_t ofp_port = ofport->up.ofp_port;
4428 if (ofp_port == ctx->flow.in_port) {
4433 compose_output_action__(ctx, ofp_port, false);
4434 } else if (!(ofport->up.opp.config & htonl(OFPPC_NO_FLOOD))) {
4435 compose_output_action(ctx, ofp_port);
4439 ctx->nf_output_iface = NF_OUT_FLOOD;
4443 execute_controller_action(struct action_xlate_ctx *ctx, int len,
4444 enum ofp_packet_in_reason reason)
4446 struct ofputil_packet_in pin;
4447 struct ofpbuf *packet;
4449 ctx->may_set_up_flow = false;
4454 packet = ofpbuf_clone(ctx->packet);
4456 if (packet->l2 && packet->l3) {
4457 struct eth_header *eh;
4459 eth_pop_vlan(packet);
4461 assert(eh->eth_type == ctx->flow.dl_type);
4462 memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
4463 memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
4465 if (ctx->flow.vlan_tci & htons(VLAN_CFI)) {
4466 eth_push_vlan(packet, ctx->flow.vlan_tci);
4470 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4471 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
4472 ctx->flow.nw_tos, ctx->flow.nw_ttl);
4476 if (ctx->flow.nw_proto == IPPROTO_TCP) {
4477 packet_set_tcp_port(packet, ctx->flow.tp_src,
4479 } else if (ctx->flow.nw_proto == IPPROTO_UDP) {
4480 packet_set_udp_port(packet, ctx->flow.tp_src,
4487 pin.packet = packet->data;
4488 pin.packet_len = packet->size;
4489 pin.reason = reason;
4490 pin.table_id = ctx->table_id;
4491 pin.cookie = ctx->rule ? ctx->rule->up.flow_cookie : 0;
4495 pin.total_len = packet->size;
4496 flow_get_metadata(&ctx->flow, &pin.fmd);
4498 connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin, &ctx->flow);
4499 ofpbuf_delete(packet);
4503 compose_dec_ttl(struct action_xlate_ctx *ctx)
4505 if (ctx->flow.dl_type != htons(ETH_TYPE_IP) &&
4506 ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) {
4510 if (ctx->flow.nw_ttl > 1) {
4514 execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL);
4516 /* Stop processing for current table. */
4522 xlate_output_action__(struct action_xlate_ctx *ctx,
4523 uint16_t port, uint16_t max_len)
4525 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
4527 ctx->nf_output_iface = NF_OUT_DROP;
4531 compose_output_action(ctx, ctx->flow.in_port);
4534 xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id);
4540 flood_packets(ctx, false);
4543 flood_packets(ctx, true);
4545 case OFPP_CONTROLLER:
4546 execute_controller_action(ctx, max_len, OFPR_ACTION);
4552 if (port != ctx->flow.in_port) {
4553 compose_output_action(ctx, port);
4558 if (prev_nf_output_iface == NF_OUT_FLOOD) {
4559 ctx->nf_output_iface = NF_OUT_FLOOD;
4560 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
4561 ctx->nf_output_iface = prev_nf_output_iface;
4562 } else if (prev_nf_output_iface != NF_OUT_DROP &&
4563 ctx->nf_output_iface != NF_OUT_FLOOD) {
4564 ctx->nf_output_iface = NF_OUT_MULTI;
4569 xlate_output_reg_action(struct action_xlate_ctx *ctx,
4570 const struct nx_action_output_reg *naor)
4572 struct mf_subfield src;
4575 nxm_decode(&src, naor->src, naor->ofs_nbits);
4576 ofp_port = mf_get_subfield(&src, &ctx->flow);
4578 if (ofp_port <= UINT16_MAX) {
4579 xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
4584 xlate_output_action(struct action_xlate_ctx *ctx,
4585 const struct ofp_action_output *oao)
4587 xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
4591 xlate_enqueue_action(struct action_xlate_ctx *ctx,
4592 const struct ofp_action_enqueue *oae)
4595 uint32_t flow_priority, priority;
4598 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
4601 /* Fall back to ordinary output action. */
4602 xlate_output_action__(ctx, ntohs(oae->port), 0);
4606 /* Figure out datapath output port. */
4607 ofp_port = ntohs(oae->port);
4608 if (ofp_port == OFPP_IN_PORT) {
4609 ofp_port = ctx->flow.in_port;
4610 } else if (ofp_port == ctx->flow.in_port) {
4614 /* Add datapath actions. */
4615 flow_priority = ctx->flow.skb_priority;
4616 ctx->flow.skb_priority = priority;
4617 compose_output_action(ctx, ofp_port);
4618 ctx->flow.skb_priority = flow_priority;
4620 /* Update NetFlow output port. */
4621 if (ctx->nf_output_iface == NF_OUT_DROP) {
4622 ctx->nf_output_iface = ofp_port;
4623 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
4624 ctx->nf_output_iface = NF_OUT_MULTI;
4629 xlate_set_queue_action(struct action_xlate_ctx *ctx,
4630 const struct nx_action_set_queue *nasq)
4635 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
4638 /* Couldn't translate queue to a priority, so ignore. A warning
4639 * has already been logged. */
4643 ctx->flow.skb_priority = priority;
4646 struct xlate_reg_state {
4652 xlate_autopath(struct action_xlate_ctx *ctx,
4653 const struct nx_action_autopath *naa)
4655 uint16_t ofp_port = ntohl(naa->id);
4656 struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
4658 if (!port || !port->bundle) {
4659 ofp_port = OFPP_NONE;
4660 } else if (port->bundle->bond) {
4661 /* Autopath does not support VLAN hashing. */
4662 struct ofport_dpif *slave = bond_choose_output_slave(
4663 port->bundle->bond, &ctx->flow, 0, &ctx->tags);
4665 ofp_port = slave->up.ofp_port;
4668 autopath_execute(naa, &ctx->flow, ofp_port);
4672 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
4674 struct ofproto_dpif *ofproto = ofproto_;
4675 struct ofport_dpif *port;
4685 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
4688 port = get_ofp_port(ofproto, ofp_port);
4689 return port ? port->may_enable : false;
4694 xlate_learn_action(struct action_xlate_ctx *ctx,
4695 const struct nx_action_learn *learn)
4697 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
4698 struct ofputil_flow_mod fm;
4701 learn_execute(learn, &ctx->flow, &fm);
4703 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
4704 if (error && !VLOG_DROP_WARN(&rl)) {
4705 VLOG_WARN("learning action failed to modify flow table (%s)",
4706 ofperr_get_name(error));
4713 may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
4715 if (port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
4716 ? htonl(OFPPC_NO_RECV_STP)
4717 : htonl(OFPPC_NO_RECV))) {
4721 /* Only drop packets here if both forwarding and learning are
4722 * disabled. If just learning is enabled, we need to have
4723 * OFPP_NORMAL and the learning action have a look at the packet
4724 * before we can drop it. */
4725 if (!stp_forward_in_state(port->stp_state)
4726 && !stp_learn_in_state(port->stp_state)) {
4734 do_xlate_actions(const union ofp_action *in, size_t n_in,
4735 struct action_xlate_ctx *ctx)
4737 const struct ofport_dpif *port;
4738 const union ofp_action *ia;
4739 bool was_evictable = true;
4742 port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
4743 if (port && !may_receive(port, ctx)) {
4744 /* Drop this flow. */
4749 /* Don't let the rule we're working on get evicted underneath us. */
4750 was_evictable = ctx->rule->up.evictable;
4751 ctx->rule->up.evictable = false;
4753 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
4754 const struct ofp_action_dl_addr *oada;
4755 const struct nx_action_resubmit *nar;
4756 const struct nx_action_set_tunnel *nast;
4757 const struct nx_action_set_queue *nasq;
4758 const struct nx_action_multipath *nam;
4759 const struct nx_action_autopath *naa;
4760 const struct nx_action_bundle *nab;
4761 const struct nx_action_output_reg *naor;
4762 enum ofputil_action_code code;
4769 code = ofputil_decode_action_unsafe(ia);
4771 case OFPUTIL_OFPAT_OUTPUT:
4772 xlate_output_action(ctx, &ia->output);
4775 case OFPUTIL_OFPAT_SET_VLAN_VID:
4776 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
4777 ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
4780 case OFPUTIL_OFPAT_SET_VLAN_PCP:
4781 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
4782 ctx->flow.vlan_tci |= htons(
4783 (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
4786 case OFPUTIL_OFPAT_STRIP_VLAN:
4787 ctx->flow.vlan_tci = htons(0);
4790 case OFPUTIL_OFPAT_SET_DL_SRC:
4791 oada = ((struct ofp_action_dl_addr *) ia);
4792 memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
4795 case OFPUTIL_OFPAT_SET_DL_DST:
4796 oada = ((struct ofp_action_dl_addr *) ia);
4797 memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
4800 case OFPUTIL_OFPAT_SET_NW_SRC:
4801 ctx->flow.nw_src = ia->nw_addr.nw_addr;
4804 case OFPUTIL_OFPAT_SET_NW_DST:
4805 ctx->flow.nw_dst = ia->nw_addr.nw_addr;
4808 case OFPUTIL_OFPAT_SET_NW_TOS:
4809 /* OpenFlow 1.0 only supports IPv4. */
4810 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4811 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4812 ctx->flow.nw_tos |= ia->nw_tos.nw_tos & IP_DSCP_MASK;
4816 case OFPUTIL_OFPAT_SET_TP_SRC:
4817 ctx->flow.tp_src = ia->tp_port.tp_port;
4820 case OFPUTIL_OFPAT_SET_TP_DST:
4821 ctx->flow.tp_dst = ia->tp_port.tp_port;
4824 case OFPUTIL_OFPAT_ENQUEUE:
4825 xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
4828 case OFPUTIL_NXAST_RESUBMIT:
4829 nar = (const struct nx_action_resubmit *) ia;
4830 xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
4833 case OFPUTIL_NXAST_RESUBMIT_TABLE:
4834 xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
4837 case OFPUTIL_NXAST_SET_TUNNEL:
4838 nast = (const struct nx_action_set_tunnel *) ia;
4839 tun_id = htonll(ntohl(nast->tun_id));
4840 ctx->flow.tun_id = tun_id;
4843 case OFPUTIL_NXAST_SET_QUEUE:
4844 nasq = (const struct nx_action_set_queue *) ia;
4845 xlate_set_queue_action(ctx, nasq);
4848 case OFPUTIL_NXAST_POP_QUEUE:
4849 ctx->flow.skb_priority = ctx->orig_skb_priority;
4852 case OFPUTIL_NXAST_REG_MOVE:
4853 nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
4857 case OFPUTIL_NXAST_REG_LOAD:
4858 nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
4862 case OFPUTIL_NXAST_NOTE:
4863 /* Nothing to do. */
4866 case OFPUTIL_NXAST_SET_TUNNEL64:
4867 tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
4868 ctx->flow.tun_id = tun_id;
4871 case OFPUTIL_NXAST_MULTIPATH:
4872 nam = (const struct nx_action_multipath *) ia;
4873 multipath_execute(nam, &ctx->flow);
4876 case OFPUTIL_NXAST_AUTOPATH:
4877 naa = (const struct nx_action_autopath *) ia;
4878 xlate_autopath(ctx, naa);
4881 case OFPUTIL_NXAST_BUNDLE:
4882 ctx->ofproto->has_bundle_action = true;
4883 nab = (const struct nx_action_bundle *) ia;
4884 xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
4889 case OFPUTIL_NXAST_BUNDLE_LOAD:
4890 ctx->ofproto->has_bundle_action = true;
4891 nab = (const struct nx_action_bundle *) ia;
4892 bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
4896 case OFPUTIL_NXAST_OUTPUT_REG:
4897 naor = (const struct nx_action_output_reg *) ia;
4898 xlate_output_reg_action(ctx, naor);
4901 case OFPUTIL_NXAST_LEARN:
4902 ctx->has_learn = true;
4903 if (ctx->may_learn) {
4904 xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
4908 case OFPUTIL_NXAST_DEC_TTL:
4909 if (compose_dec_ttl(ctx)) {
4914 case OFPUTIL_NXAST_EXIT:
4921 /* We've let OFPP_NORMAL and the learning action look at the packet,
4922 * so drop it now if forwarding is disabled. */
4923 if (port && !stp_forward_in_state(port->stp_state)) {
4924 ofpbuf_clear(ctx->odp_actions);
4925 add_sflow_action(ctx);
4928 ctx->rule->up.evictable = was_evictable;
4933 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
4934 struct ofproto_dpif *ofproto, const struct flow *flow,
4935 ovs_be16 initial_tci, struct rule_dpif *rule,
4936 const struct ofpbuf *packet)
4938 ctx->ofproto = ofproto;
4940 ctx->base_flow = ctx->flow;
4941 ctx->base_flow.tun_id = 0;
4942 ctx->base_flow.vlan_tci = initial_tci;
4944 ctx->packet = packet;
4945 ctx->may_learn = packet != NULL;
4946 ctx->resubmit_hook = NULL;
4949 static struct ofpbuf *
4950 xlate_actions(struct action_xlate_ctx *ctx,
4951 const union ofp_action *in, size_t n_in)
4953 struct flow orig_flow = ctx->flow;
4955 COVERAGE_INC(ofproto_dpif_xlate);
4957 ctx->odp_actions = ofpbuf_new(512);
4958 ofpbuf_reserve(ctx->odp_actions, NL_A_U32_SIZE);
4960 ctx->may_set_up_flow = true;
4961 ctx->has_learn = false;
4962 ctx->has_normal = false;
4963 ctx->nf_output_iface = NF_OUT_DROP;
4966 ctx->orig_skb_priority = ctx->flow.skb_priority;
4970 if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
4971 switch (ctx->ofproto->up.frag_handling) {
4972 case OFPC_FRAG_NORMAL:
4973 /* We must pretend that transport ports are unavailable. */
4974 ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0);
4975 ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0);
4978 case OFPC_FRAG_DROP:
4979 return ctx->odp_actions;
4981 case OFPC_FRAG_REASM:
4984 case OFPC_FRAG_NX_MATCH:
4985 /* Nothing to do. */
4988 case OFPC_INVALID_TTL_TO_CONTROLLER:
4993 if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
4994 ctx->may_set_up_flow = false;
4995 return ctx->odp_actions;
4997 add_sflow_action(ctx);
4998 do_xlate_actions(in, n_in, ctx);
5000 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
5001 ctx->odp_actions->data,
5002 ctx->odp_actions->size)) {
5003 ctx->may_set_up_flow = false;
5005 && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
5007 compose_output_action(ctx, OFPP_LOCAL);
5010 add_mirror_actions(ctx, &orig_flow);
5011 fix_sflow_action(ctx);
5014 return ctx->odp_actions;
5017 /* OFPP_NORMAL implementation. */
5019 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
5021 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
5022 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
5023 * the bundle on which the packet was received, returns the VLAN to which the
5026 * Both 'vid' and the return value are in the range 0...4095. */
5028 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
5030 switch (in_bundle->vlan_mode) {
5031 case PORT_VLAN_ACCESS:
5032 return in_bundle->vlan;
5035 case PORT_VLAN_TRUNK:
5038 case PORT_VLAN_NATIVE_UNTAGGED:
5039 case PORT_VLAN_NATIVE_TAGGED:
5040 return vid ? vid : in_bundle->vlan;
5047 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
5048 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
5051 * 'vid' should be the VID obtained from the 802.1Q header that was received as
5052 * part of a packet (specify 0 if there was no 802.1Q header), in the range
5055 input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn)
5057 /* Allow any VID on the OFPP_NONE port. */
5058 if (in_bundle == &ofpp_none_bundle) {
5062 switch (in_bundle->vlan_mode) {
5063 case PORT_VLAN_ACCESS:
5066 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5067 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
5068 "packet received on port %s configured as VLAN "
5069 "%"PRIu16" access port",
5070 in_bundle->ofproto->up.name, vid,
5071 in_bundle->name, in_bundle->vlan);
5077 case PORT_VLAN_NATIVE_UNTAGGED:
5078 case PORT_VLAN_NATIVE_TAGGED:
5080 /* Port must always carry its native VLAN. */
5084 case PORT_VLAN_TRUNK:
5085 if (!ofbundle_includes_vlan(in_bundle, vid)) {
5087 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5088 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet "
5089 "received on port %s not configured for trunking "
5091 in_bundle->ofproto->up.name, vid,
5092 in_bundle->name, vid);
5104 /* Given 'vlan', the VLAN that a packet belongs to, and
5105 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
5106 * that should be included in the 802.1Q header. (If the return value is 0,
5107 * then the 802.1Q header should only be included in the packet if there is a
5110 * Both 'vlan' and the return value are in the range 0...4095. */
5112 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
5114 switch (out_bundle->vlan_mode) {
5115 case PORT_VLAN_ACCESS:
5118 case PORT_VLAN_TRUNK:
5119 case PORT_VLAN_NATIVE_TAGGED:
5122 case PORT_VLAN_NATIVE_UNTAGGED:
5123 return vlan == out_bundle->vlan ? 0 : vlan;
5131 output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle,
5134 struct ofport_dpif *port;
5136 ovs_be16 tci, old_tci;
5138 vid = output_vlan_to_vid(out_bundle, vlan);
5139 if (!out_bundle->bond) {
5140 port = ofbundle_get_a_port(out_bundle);
5142 port = bond_choose_output_slave(out_bundle->bond, &ctx->flow,
5145 /* No slaves enabled, so drop packet. */
5150 old_tci = ctx->flow.vlan_tci;
5152 if (tci || out_bundle->use_priority_tags) {
5153 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
5155 tci |= htons(VLAN_CFI);
5158 ctx->flow.vlan_tci = tci;
5160 compose_output_action(ctx, port->up.ofp_port);
5161 ctx->flow.vlan_tci = old_tci;
5165 mirror_mask_ffs(mirror_mask_t mask)
5167 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
5172 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
5174 return (bundle->vlan_mode != PORT_VLAN_ACCESS
5175 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
5179 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
5181 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
5184 /* Returns an arbitrary interface within 'bundle'. */
5185 static struct ofport_dpif *
5186 ofbundle_get_a_port(const struct ofbundle *bundle)
5188 return CONTAINER_OF(list_front(&bundle->ports),
5189 struct ofport_dpif, bundle_node);
5193 vlan_is_mirrored(const struct ofmirror *m, int vlan)
5195 return !m->vlans || bitmap_is_set(m->vlans, vlan);
5198 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
5199 * to a VLAN. In general most packets may be mirrored but we want to drop
5200 * protocols that may confuse switches. */
5202 eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
5204 /* If you change this function's behavior, please update corresponding
5205 * documentation in vswitch.xml at the same time. */
5206 if (dst[0] != 0x01) {
5207 /* All the currently banned MACs happen to start with 01 currently, so
5208 * this is a quick way to eliminate most of the good ones. */
5210 if (eth_addr_is_reserved(dst)) {
5211 /* Drop STP, IEEE pause frames, and other reserved protocols
5212 * (01-80-c2-00-00-0x). */
5216 if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
5218 if ((dst[3] & 0xfe) == 0xcc &&
5219 (dst[4] & 0xfe) == 0xcc &&
5220 (dst[5] & 0xfe) == 0xcc) {
5221 /* Drop the following protocols plus others following the same
5224 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
5225 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
5226 STP Uplink Fast (01-00-0c-cd-cd-cd) */
5230 if (!(dst[3] | dst[4] | dst[5])) {
5231 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
5240 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
5242 struct ofproto_dpif *ofproto = ctx->ofproto;
5243 mirror_mask_t mirrors;
5244 struct ofbundle *in_bundle;
5247 const struct nlattr *a;
5250 in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
5251 ctx->packet != NULL);
5255 mirrors = in_bundle->src_mirrors;
5257 /* Drop frames on bundles reserved for mirroring. */
5258 if (in_bundle->mirror_out) {
5259 if (ctx->packet != NULL) {
5260 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5261 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5262 "%s, which is reserved exclusively for mirroring",
5263 ctx->ofproto->up.name, in_bundle->name);
5269 vid = vlan_tci_to_vid(orig_flow->vlan_tci);
5270 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5273 vlan = input_vid_to_vlan(in_bundle, vid);
5275 /* Look at the output ports to check for destination selections. */
5277 NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data,
5278 ctx->odp_actions->size) {
5279 enum ovs_action_attr type = nl_attr_type(a);
5280 struct ofport_dpif *ofport;
5282 if (type != OVS_ACTION_ATTR_OUTPUT) {
5286 ofport = get_odp_port(ofproto, nl_attr_get_u32(a));
5287 if (ofport && ofport->bundle) {
5288 mirrors |= ofport->bundle->dst_mirrors;
5296 /* Restore the original packet before adding the mirror actions. */
5297 ctx->flow = *orig_flow;
5302 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5304 if (!vlan_is_mirrored(m, vlan)) {
5305 mirrors &= mirrors - 1;
5309 mirrors &= ~m->dup_mirrors;
5310 ctx->mirrors |= m->dup_mirrors;
5312 output_normal(ctx, m->out, vlan);
5313 } else if (eth_dst_may_rspan(orig_flow->dl_dst)
5314 && vlan != m->out_vlan) {
5315 struct ofbundle *bundle;
5317 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
5318 if (ofbundle_includes_vlan(bundle, m->out_vlan)
5319 && !bundle->mirror_out) {
5320 output_normal(ctx, bundle, m->out_vlan);
5328 update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
5329 uint64_t packets, uint64_t bytes)
5335 for (; mirrors; mirrors &= mirrors - 1) {
5338 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5341 /* In normal circumstances 'm' will not be NULL. However,
5342 * if mirrors are reconfigured, we can temporarily get out
5343 * of sync in facet_revalidate(). We could "correct" the
5344 * mirror list before reaching here, but doing that would
5345 * not properly account the traffic stats we've currently
5346 * accumulated for previous mirror configuration. */
5350 m->packet_count += packets;
5351 m->byte_count += bytes;
5355 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
5356 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
5357 * indicate this; newer upstream kernels use gratuitous ARP requests. */
5359 is_gratuitous_arp(const struct flow *flow)
5361 return (flow->dl_type == htons(ETH_TYPE_ARP)
5362 && eth_addr_is_broadcast(flow->dl_dst)
5363 && (flow->nw_proto == ARP_OP_REPLY
5364 || (flow->nw_proto == ARP_OP_REQUEST
5365 && flow->nw_src == flow->nw_dst)));
5369 update_learning_table(struct ofproto_dpif *ofproto,
5370 const struct flow *flow, int vlan,
5371 struct ofbundle *in_bundle)
5373 struct mac_entry *mac;
5375 /* Don't learn the OFPP_NONE port. */
5376 if (in_bundle == &ofpp_none_bundle) {
5380 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
5384 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
5385 if (is_gratuitous_arp(flow)) {
5386 /* We don't want to learn from gratuitous ARP packets that are
5387 * reflected back over bond slaves so we lock the learning table. */
5388 if (!in_bundle->bond) {
5389 mac_entry_set_grat_arp_lock(mac);
5390 } else if (mac_entry_is_grat_arp_locked(mac)) {
5395 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
5396 /* The log messages here could actually be useful in debugging,
5397 * so keep the rate limit relatively high. */
5398 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
5399 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
5400 "on port %s in VLAN %d",
5401 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
5402 in_bundle->name, vlan);
5404 mac->port.p = in_bundle;
5405 tag_set_add(&ofproto->revalidate_set,
5406 mac_learning_changed(ofproto->ml, mac));
5410 static struct ofbundle *
5411 lookup_input_bundle(struct ofproto_dpif *ofproto, uint16_t in_port, bool warn)
5413 struct ofport_dpif *ofport;
5415 /* Special-case OFPP_NONE, which a controller may use as the ingress
5416 * port for traffic that it is sourcing. */
5417 if (in_port == OFPP_NONE) {
5418 return &ofpp_none_bundle;
5421 /* Find the port and bundle for the received packet. */
5422 ofport = get_ofp_port(ofproto, in_port);
5423 if (ofport && ofport->bundle) {
5424 return ofport->bundle;
5427 /* Odd. A few possible reasons here:
5429 * - We deleted a port but there are still a few packets queued up
5432 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
5433 * we don't know about.
5435 * - The ofproto client didn't configure the port as part of a bundle.
5438 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5440 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
5441 "port %"PRIu16, ofproto->up.name, in_port);
5446 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
5447 * dropped. Returns true if they may be forwarded, false if they should be
5450 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
5451 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
5453 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
5454 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
5455 * checked by input_vid_is_valid().
5457 * May also add tags to '*tags', although the current implementation only does
5458 * so in one special case.
5461 is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
5462 struct ofport_dpif *in_port, uint16_t vlan, tag_type *tags)
5464 struct ofbundle *in_bundle = in_port->bundle;
5466 /* Drop frames for reserved multicast addresses
5467 * only if forward_bpdu option is absent. */
5468 if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
5472 if (in_bundle->bond) {
5473 struct mac_entry *mac;
5475 switch (bond_check_admissibility(in_bundle->bond, in_port,
5476 flow->dl_dst, tags)) {
5483 case BV_DROP_IF_MOVED:
5484 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
5485 if (mac && mac->port.p != in_bundle &&
5486 (!is_gratuitous_arp(flow)
5487 || mac_entry_is_grat_arp_locked(mac))) {
5498 xlate_normal(struct action_xlate_ctx *ctx)
5500 struct ofport_dpif *in_port;
5501 struct ofbundle *in_bundle;
5502 struct mac_entry *mac;
5506 ctx->has_normal = true;
5508 in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
5509 ctx->packet != NULL);
5514 /* We know 'in_port' exists unless it is "ofpp_none_bundle",
5515 * since lookup_input_bundle() succeeded. */
5516 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
5518 /* Drop malformed frames. */
5519 if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
5520 !(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
5521 if (ctx->packet != NULL) {
5522 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5523 VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial "
5524 "VLAN tag received on port %s",
5525 ctx->ofproto->up.name, in_bundle->name);
5530 /* Drop frames on bundles reserved for mirroring. */
5531 if (in_bundle->mirror_out) {
5532 if (ctx->packet != NULL) {
5533 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5534 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5535 "%s, which is reserved exclusively for mirroring",
5536 ctx->ofproto->up.name, in_bundle->name);
5542 vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
5543 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5546 vlan = input_vid_to_vlan(in_bundle, vid);
5548 /* Check other admissibility requirements. */
5550 !is_admissible(ctx->ofproto, &ctx->flow, in_port, vlan, &ctx->tags)) {
5554 /* Learn source MAC. */
5555 if (ctx->may_learn) {
5556 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
5559 /* Determine output bundle. */
5560 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
5563 if (mac->port.p != in_bundle) {
5564 output_normal(ctx, mac->port.p, vlan);
5567 struct ofbundle *bundle;
5569 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
5570 if (bundle != in_bundle
5571 && ofbundle_includes_vlan(bundle, vlan)
5572 && bundle->floodable
5573 && !bundle->mirror_out) {
5574 output_normal(ctx, bundle, vlan);
5577 ctx->nf_output_iface = NF_OUT_FLOOD;
5581 /* Optimized flow revalidation.
5583 * It's a difficult problem, in general, to tell which facets need to have
5584 * their actions recalculated whenever the OpenFlow flow table changes. We
5585 * don't try to solve that general problem: for most kinds of OpenFlow flow
5586 * table changes, we recalculate the actions for every facet. This is
5587 * relatively expensive, but it's good enough if the OpenFlow flow table
5588 * doesn't change very often.
5590 * However, we can expect one particular kind of OpenFlow flow table change to
5591 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
5592 * of CPU on revalidating every facet whenever MAC learning modifies the flow
5593 * table, we add a special case that applies to flow tables in which every rule
5594 * has the same form (that is, the same wildcards), except that the table is
5595 * also allowed to have a single "catch-all" flow that matches all packets. We
5596 * optimize this case by tagging all of the facets that resubmit into the table
5597 * and invalidating the same tag whenever a flow changes in that table. The
5598 * end result is that we revalidate just the facets that need it (and sometimes
5599 * a few more, but not all of the facets or even all of the facets that
5600 * resubmit to the table modified by MAC learning). */
5602 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
5603 * into an OpenFlow table with the given 'basis'. */
5605 rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
5608 if (flow_wildcards_is_catchall(wc)) {
5611 struct flow tag_flow = *flow;
5612 flow_zero_wildcards(&tag_flow, wc);
5613 return tag_create_deterministic(flow_hash(&tag_flow, secret));
5617 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
5618 * taggability of that table.
5620 * This function must be called after *each* change to a flow table. If you
5621 * skip calling it on some changes then the pointer comparisons at the end can
5622 * be invalid if you get unlucky. For example, if a flow removal causes a
5623 * cls_table to be destroyed and then a flow insertion causes a cls_table with
5624 * different wildcards to be created with the same address, then this function
5625 * will incorrectly skip revalidation. */
5627 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
5629 struct table_dpif *table = &ofproto->tables[table_id];
5630 const struct oftable *oftable = &ofproto->up.tables[table_id];
5631 struct cls_table *catchall, *other;
5632 struct cls_table *t;
5634 catchall = other = NULL;
5636 switch (hmap_count(&oftable->cls.tables)) {
5638 /* We could tag this OpenFlow table but it would make the logic a
5639 * little harder and it's a corner case that doesn't seem worth it
5645 HMAP_FOR_EACH (t, hmap_node, &oftable->cls.tables) {
5646 if (cls_table_is_catchall(t)) {
5648 } else if (!other) {
5651 /* Indicate that we can't tag this by setting both tables to
5652 * NULL. (We know that 'catchall' is already NULL.) */
5659 /* Can't tag this table. */
5663 if (table->catchall_table != catchall || table->other_table != other) {
5664 table->catchall_table = catchall;
5665 table->other_table = other;
5666 ofproto->need_revalidate = true;
5670 /* Given 'rule' that has changed in some way (either it is a rule being
5671 * inserted, a rule being deleted, or a rule whose actions are being
5672 * modified), marks facets for revalidation to ensure that packets will be
5673 * forwarded correctly according to the new state of the flow table.
5675 * This function must be called after *each* change to a flow table. See
5676 * the comment on table_update_taggable() for more information. */
5678 rule_invalidate(const struct rule_dpif *rule)
5680 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5682 table_update_taggable(ofproto, rule->up.table_id);
5684 if (!ofproto->need_revalidate) {
5685 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
5687 if (table->other_table && rule->tag) {
5688 tag_set_add(&ofproto->revalidate_set, rule->tag);
5690 ofproto->need_revalidate = true;
5696 set_frag_handling(struct ofproto *ofproto_,
5697 enum ofp_config_flags frag_handling)
5699 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5701 if (frag_handling != OFPC_FRAG_REASM) {
5702 ofproto->need_revalidate = true;
5710 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5711 const struct flow *flow,
5712 const union ofp_action *ofp_actions, size_t n_ofp_actions)
5714 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5717 if (flow->in_port >= ofproto->max_ports && flow->in_port < OFPP_MAX) {
5718 return OFPERR_NXBRC_BAD_IN_PORT;
5721 error = validate_actions(ofp_actions, n_ofp_actions, flow,
5722 ofproto->max_ports);
5724 struct odputil_keybuf keybuf;
5725 struct ofpbuf *odp_actions;
5726 struct ofproto_push push;
5729 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5730 odp_flow_key_from_flow(&key, flow);
5732 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, NULL,
5735 /* Ensure that resubmits in 'ofp_actions' get accounted to their
5736 * matching rules. */
5738 push.bytes = packet->size;
5739 push.used = time_msec();
5740 push.ctx.resubmit_hook = push_resubmit;
5742 odp_actions = xlate_actions(&push.ctx, ofp_actions, n_ofp_actions);
5743 dpif_execute(ofproto->dpif, key.data, key.size,
5744 odp_actions->data, odp_actions->size, packet);
5745 ofpbuf_delete(odp_actions);
5753 set_netflow(struct ofproto *ofproto_,
5754 const struct netflow_options *netflow_options)
5756 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5758 if (netflow_options) {
5759 if (!ofproto->netflow) {
5760 ofproto->netflow = netflow_create();
5762 return netflow_set_options(ofproto->netflow, netflow_options);
5764 netflow_destroy(ofproto->netflow);
5765 ofproto->netflow = NULL;
5771 get_netflow_ids(const struct ofproto *ofproto_,
5772 uint8_t *engine_type, uint8_t *engine_id)
5774 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5776 dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
5780 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5782 if (!facet_is_controller_flow(facet) &&
5783 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5784 struct subfacet *subfacet;
5785 struct ofexpired expired;
5787 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5788 if (subfacet->installed) {
5789 struct dpif_flow_stats stats;
5791 subfacet_install(subfacet, subfacet->actions,
5792 subfacet->actions_len, &stats);
5793 subfacet_update_stats(subfacet, &stats);
5797 expired.flow = facet->flow;
5798 expired.packet_count = facet->packet_count;
5799 expired.byte_count = facet->byte_count;
5800 expired.used = facet->used;
5801 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5806 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5808 struct facet *facet;
5810 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
5811 send_active_timeout(ofproto, facet);
5815 static struct ofproto_dpif *
5816 ofproto_dpif_lookup(const char *name)
5818 struct ofproto_dpif *ofproto;
5820 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5821 hash_string(name, 0), &all_ofproto_dpifs) {
5822 if (!strcmp(ofproto->up.name, name)) {
5830 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5831 const char *argv[], void *aux OVS_UNUSED)
5833 struct ofproto_dpif *ofproto;
5836 ofproto = ofproto_dpif_lookup(argv[1]);
5838 unixctl_command_reply(conn, 501, "no such bridge");
5841 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5843 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5844 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5848 unixctl_command_reply(conn, 200, "table successfully flushed");
5852 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5853 const char *argv[], void *aux OVS_UNUSED)
5855 struct ds ds = DS_EMPTY_INITIALIZER;
5856 const struct ofproto_dpif *ofproto;
5857 const struct mac_entry *e;
5859 ofproto = ofproto_dpif_lookup(argv[1]);
5861 unixctl_command_reply(conn, 501, "no such bridge");
5865 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5866 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5867 struct ofbundle *bundle = e->port.p;
5868 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
5869 ofbundle_get_a_port(bundle)->odp_port,
5870 e->vlan, ETH_ADDR_ARGS(e->mac),
5871 mac_entry_age(ofproto->ml, e));
5873 unixctl_command_reply(conn, 200, ds_cstr(&ds));
5877 struct ofproto_trace {
5878 struct action_xlate_ctx ctx;
5884 trace_format_rule(struct ds *result, uint8_t table_id, int level,
5885 const struct rule_dpif *rule)
5887 ds_put_char_multiple(result, '\t', level);
5889 ds_put_cstr(result, "No match\n");
5893 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5894 table_id, ntohll(rule->up.flow_cookie));
5895 cls_rule_format(&rule->up.cr, result);
5896 ds_put_char(result, '\n');
5898 ds_put_char_multiple(result, '\t', level);
5899 ds_put_cstr(result, "OpenFlow ");
5900 ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
5901 ds_put_char(result, '\n');
5905 trace_format_flow(struct ds *result, int level, const char *title,
5906 struct ofproto_trace *trace)
5908 ds_put_char_multiple(result, '\t', level);
5909 ds_put_format(result, "%s: ", title);
5910 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
5911 ds_put_cstr(result, "unchanged");
5913 flow_format(result, &trace->ctx.flow);
5914 trace->flow = trace->ctx.flow;
5916 ds_put_char(result, '\n');
5920 trace_format_regs(struct ds *result, int level, const char *title,
5921 struct ofproto_trace *trace)
5925 ds_put_char_multiple(result, '\t', level);
5926 ds_put_format(result, "%s:", title);
5927 for (i = 0; i < FLOW_N_REGS; i++) {
5928 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
5930 ds_put_char(result, '\n');
5934 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
5936 struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
5937 struct ds *result = trace->result;
5939 ds_put_char(result, '\n');
5940 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
5941 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
5942 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
5946 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5947 void *aux OVS_UNUSED)
5949 const char *dpname = argv[1];
5950 struct ofproto_dpif *ofproto;
5951 struct ofpbuf odp_key;
5952 struct ofpbuf *packet;
5953 struct rule_dpif *rule;
5954 ovs_be16 initial_tci;
5960 ofpbuf_init(&odp_key, 0);
5963 ofproto = ofproto_dpif_lookup(dpname);
5965 unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
5969 if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) {
5970 /* ofproto/trace dpname flow [-generate] */
5971 const char *flow_s = argv[2];
5972 const char *generate_s = argv[3];
5975 /* Convert string to datapath key. */
5976 ofpbuf_init(&odp_key, 0);
5977 error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
5979 unixctl_command_reply(conn, 501, "Bad flow syntax");
5983 /* Convert odp_key to flow. */
5984 error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
5985 odp_key.size, &flow,
5986 &initial_tci, NULL);
5987 if (error == ODP_FIT_ERROR) {
5988 unixctl_command_reply(conn, 501, "Invalid flow");
5992 /* Generate a packet, if requested. */
5994 packet = ofpbuf_new(0);
5995 flow_compose(packet, &flow);
5997 } else if (argc == 6) {
5998 /* ofproto/trace dpname priority tun_id in_port packet */
5999 const char *priority_s = argv[2];
6000 const char *tun_id_s = argv[3];
6001 const char *in_port_s = argv[4];
6002 const char *packet_s = argv[5];
6003 uint16_t in_port = ofp_port_to_odp_port(atoi(in_port_s));
6004 ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
6005 uint32_t priority = atoi(priority_s);
6008 msg = eth_from_hex(packet_s, &packet);
6010 unixctl_command_reply(conn, 501, msg);
6014 ds_put_cstr(&result, "Packet: ");
6015 s = ofp_packet_to_string(packet->data, packet->size);
6016 ds_put_cstr(&result, s);
6019 flow_extract(packet, priority, tun_id, in_port, &flow);
6020 initial_tci = flow.vlan_tci;
6022 unixctl_command_reply(conn, 501, "Bad command syntax");
6026 ds_put_cstr(&result, "Flow: ");
6027 flow_format(&result, &flow);
6028 ds_put_char(&result, '\n');
6030 rule = rule_dpif_lookup(ofproto, &flow, 0);
6031 trace_format_rule(&result, 0, 0, rule);
6033 struct ofproto_trace trace;
6034 struct ofpbuf *odp_actions;
6036 trace.result = &result;
6038 action_xlate_ctx_init(&trace.ctx, ofproto, &flow, initial_tci,
6040 trace.ctx.resubmit_hook = trace_resubmit;
6041 odp_actions = xlate_actions(&trace.ctx,
6042 rule->up.actions, rule->up.n_actions);
6044 ds_put_char(&result, '\n');
6045 trace_format_flow(&result, 0, "Final flow", &trace);
6046 ds_put_cstr(&result, "Datapath actions: ");
6047 format_odp_actions(&result, odp_actions->data, odp_actions->size);
6048 ofpbuf_delete(odp_actions);
6050 if (!trace.ctx.may_set_up_flow) {
6052 ds_put_cstr(&result, "\nThis flow is not cachable.");
6054 ds_put_cstr(&result, "\nThe datapath actions are incomplete--"
6055 "for complete actions, please supply a packet.");
6060 unixctl_command_reply(conn, 200, ds_cstr(&result));
6063 ds_destroy(&result);
6064 ofpbuf_delete(packet);
6065 ofpbuf_uninit(&odp_key);
6069 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6070 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6073 unixctl_command_reply(conn, 200, NULL);
6077 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6078 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6081 unixctl_command_reply(conn, 200, NULL);
6084 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
6085 * 'reply' describing the results. */
6087 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
6089 struct facet *facet;
6093 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
6094 if (!facet_check_consistency(facet)) {
6099 ofproto->need_revalidate = true;
6103 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
6104 ofproto->up.name, errors);
6106 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
6111 ofproto_dpif_self_check(struct unixctl_conn *conn,
6112 int argc, const char *argv[], void *aux OVS_UNUSED)
6114 struct ds reply = DS_EMPTY_INITIALIZER;
6115 struct ofproto_dpif *ofproto;
6118 ofproto = ofproto_dpif_lookup(argv[1]);
6120 unixctl_command_reply(conn, 501, "Unknown ofproto (use "
6121 "ofproto/list for help)");
6124 ofproto_dpif_self_check__(ofproto, &reply);
6126 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
6127 ofproto_dpif_self_check__(ofproto, &reply);
6131 unixctl_command_reply(conn, 200, ds_cstr(&reply));
6136 ofproto_dpif_unixctl_init(void)
6138 static bool registered;
6144 unixctl_command_register(
6146 "bridge {tun_id in_port packet | odp_flow [-generate]}",
6147 2, 5, ofproto_unixctl_trace, NULL);
6148 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6149 ofproto_unixctl_fdb_flush, NULL);
6150 unixctl_command_register("fdb/show", "bridge", 1, 1,
6151 ofproto_unixctl_fdb_show, NULL);
6152 unixctl_command_register("ofproto/clog", "", 0, 0,
6153 ofproto_dpif_clog, NULL);
6154 unixctl_command_register("ofproto/unclog", "", 0, 0,
6155 ofproto_dpif_unclog, NULL);
6156 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6157 ofproto_dpif_self_check, NULL);
6160 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6162 * This is deprecated. It is only for compatibility with broken device drivers
6163 * in old versions of Linux that do not properly support VLANs when VLAN
6164 * devices are not used. When broken device drivers are no longer in
6165 * widespread use, we will delete these interfaces. */
6168 set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
6170 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6171 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6173 if (realdev_ofp_port == ofport->realdev_ofp_port
6174 && vid == ofport->vlandev_vid) {
6178 ofproto->need_revalidate = true;
6180 if (ofport->realdev_ofp_port) {
6183 if (realdev_ofp_port && ofport->bundle) {
6184 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6185 * themselves be part of a bundle. */
6186 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6189 ofport->realdev_ofp_port = realdev_ofp_port;
6190 ofport->vlandev_vid = vid;
6192 if (realdev_ofp_port) {
6193 vsp_add(ofport, realdev_ofp_port, vid);
6200 hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
6202 return hash_2words(realdev_ofp_port, vid);
6206 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6207 uint32_t realdev_odp_port, ovs_be16 vlan_tci)
6209 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6210 uint16_t realdev_ofp_port = odp_port_to_ofp_port(realdev_odp_port);
6211 int vid = vlan_tci_to_vid(vlan_tci);
6212 const struct vlan_splinter *vsp;
6214 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6215 hash_realdev_vid(realdev_ofp_port, vid),
6216 &ofproto->realdev_vid_map) {
6217 if (vsp->realdev_ofp_port == realdev_ofp_port
6218 && vsp->vid == vid) {
6219 return ofp_port_to_odp_port(vsp->vlandev_ofp_port);
6223 return realdev_odp_port;
6226 static struct vlan_splinter *
6227 vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port)
6229 struct vlan_splinter *vsp;
6231 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0),
6232 &ofproto->vlandev_map) {
6233 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6242 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6243 uint16_t vlandev_ofp_port, int *vid)
6245 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6246 const struct vlan_splinter *vsp;
6248 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6253 return vsp->realdev_ofp_port;
6260 vsp_remove(struct ofport_dpif *port)
6262 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6263 struct vlan_splinter *vsp;
6265 vsp = vlandev_find(ofproto, port->up.ofp_port);
6267 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6268 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6271 port->realdev_ofp_port = 0;
6273 VLOG_ERR("missing vlan device record");
6278 vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
6280 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6282 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6283 && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid))
6284 == realdev_ofp_port)) {
6285 struct vlan_splinter *vsp;
6287 vsp = xmalloc(sizeof *vsp);
6288 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6289 hash_int(port->up.ofp_port, 0));
6290 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6291 hash_realdev_vid(realdev_ofp_port, vid));
6292 vsp->realdev_ofp_port = realdev_ofp_port;
6293 vsp->vlandev_ofp_port = port->up.ofp_port;
6296 port->realdev_ofp_port = realdev_ofp_port;
6298 VLOG_ERR("duplicate vlan device record");
6302 const struct ofproto_class ofproto_dpif_class = {
6331 port_is_lacp_current,
6332 NULL, /* rule_choose_table */
6339 rule_modify_actions,
6347 get_cfm_remote_mpids,
6351 get_stp_port_status,
6358 is_mirror_output_bundle,
6359 forward_bpdu_changed,