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 "multipath.h"
44 #include "ofp-print.h"
45 #include "ofproto-dpif-sflow.h"
46 #include "poll-loop.h"
48 #include "unaligned.h"
50 #include "vlan-bitmap.h"
53 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
55 COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
56 COVERAGE_DEFINE(ofproto_dpif_expired);
57 COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
58 COVERAGE_DEFINE(ofproto_dpif_xlate);
59 COVERAGE_DEFINE(facet_changed_rule);
60 COVERAGE_DEFINE(facet_invalidated);
61 COVERAGE_DEFINE(facet_revalidate);
62 COVERAGE_DEFINE(facet_unexpected);
64 /* Maximum depth of flow table recursion (due to resubmit actions) in a
65 * flow translation. */
66 #define MAX_RESUBMIT_RECURSION 32
68 /* Number of implemented OpenFlow tables. */
69 enum { N_TABLES = 255 };
70 BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
78 long long int used; /* Time last used; time created if not used. */
82 * - Do include packets and bytes from facets that have been deleted or
83 * whose own statistics have been folded into the rule.
85 * - Do include packets and bytes sent "by hand" that were accounted to
86 * the rule without any facet being involved (this is a rare corner
87 * case in rule_execute()).
89 * - Do not include packet or bytes that can be obtained from any facet's
90 * packet_count or byte_count member or that can be obtained from the
91 * datapath by, e.g., dpif_flow_get() for any subfacet.
93 uint64_t packet_count; /* Number of packets received. */
94 uint64_t byte_count; /* Number of bytes received. */
96 tag_type tag; /* Caches rule_calculate_tag() result. */
98 struct list facets; /* List of "struct facet"s. */
101 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
103 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
106 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
107 const struct flow *, uint8_t table);
109 static void flow_push_stats(const struct rule_dpif *, const struct flow *,
110 uint64_t packets, uint64_t bytes,
113 static uint32_t rule_calculate_tag(const struct flow *,
114 const struct flow_wildcards *,
116 static void rule_invalidate(const struct rule_dpif *);
118 #define MAX_MIRRORS 32
119 typedef uint32_t mirror_mask_t;
120 #define MIRROR_MASK_C(X) UINT32_C(X)
121 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
123 struct ofproto_dpif *ofproto; /* Owning ofproto. */
124 size_t idx; /* In ofproto's "mirrors" array. */
125 void *aux; /* Key supplied by ofproto's client. */
126 char *name; /* Identifier for log messages. */
128 /* Selection criteria. */
129 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
130 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
131 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
133 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
134 struct ofbundle *out; /* Output port or NULL. */
135 int out_vlan; /* Output VLAN or -1. */
136 mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
139 int64_t packet_count; /* Number of packets sent. */
140 int64_t byte_count; /* Number of bytes sent. */
143 static void mirror_destroy(struct ofmirror *);
144 static void update_mirror_stats(struct ofproto_dpif *ofproto,
145 mirror_mask_t mirrors,
146 uint64_t packets, uint64_t bytes);
149 struct ofproto_dpif *ofproto; /* Owning ofproto. */
150 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
151 void *aux; /* Key supplied by ofproto's client. */
152 char *name; /* Identifier for log messages. */
155 struct list ports; /* Contains "struct ofport"s. */
156 enum port_vlan_mode vlan_mode; /* VLAN mode */
157 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
158 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
159 * NULL if all VLANs are trunked. */
160 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
161 struct bond *bond; /* Nonnull iff more than one port. */
162 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
165 bool floodable; /* True if no port has OFPPC_NO_FLOOD set. */
167 /* Port mirroring info. */
168 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
169 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
170 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
173 static void bundle_remove(struct ofport *);
174 static void bundle_update(struct ofbundle *);
175 static void bundle_destroy(struct ofbundle *);
176 static void bundle_del_port(struct ofport_dpif *);
177 static void bundle_run(struct ofbundle *);
178 static void bundle_wait(struct ofbundle *);
179 static struct ofbundle *lookup_input_bundle(struct ofproto_dpif *,
180 uint16_t in_port, bool warn);
182 /* A controller may use OFPP_NONE as the ingress port to indicate that
183 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
184 * when an input bundle is needed for validation (e.g., mirroring or
185 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
186 * any 'port' structs, so care must be taken when dealing with it. */
187 static struct ofbundle ofpp_none_bundle = {
189 .vlan_mode = PORT_VLAN_TRUNK
192 static void stp_run(struct ofproto_dpif *ofproto);
193 static void stp_wait(struct ofproto_dpif *ofproto);
195 static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan);
197 struct action_xlate_ctx {
198 /* action_xlate_ctx_init() initializes these members. */
201 struct ofproto_dpif *ofproto;
203 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
204 * this flow when actions change header fields. */
207 /* The packet corresponding to 'flow', or a null pointer if we are
208 * revalidating without a packet to refer to. */
209 const struct ofpbuf *packet;
211 /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We
212 * want to execute them if we are actually processing a packet, or if we
213 * are accounting for packets that the datapath has processed, but not if
214 * we are just revalidating. */
217 /* Cookie of the currently matching rule, or 0. */
220 /* If nonnull, called just before executing a resubmit action.
222 * This is normally null so the client has to set it manually after
223 * calling action_xlate_ctx_init(). */
224 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
226 /* xlate_actions() initializes and uses these members. The client might want
227 * to look at them after it returns. */
229 struct ofpbuf *odp_actions; /* Datapath actions. */
230 tag_type tags; /* Tags associated with actions. */
231 bool may_set_up_flow; /* True ordinarily; false if the actions must
232 * be reassessed for every packet. */
233 bool has_learn; /* Actions include NXAST_LEARN? */
234 bool has_normal; /* Actions output to OFPP_NORMAL? */
235 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
236 mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
238 /* xlate_actions() initializes and uses these members, but the client has no
239 * reason to look at them. */
241 int recurse; /* Recursion level, via xlate_table_action. */
242 struct flow base_flow; /* Flow at the last commit. */
243 uint32_t orig_skb_priority; /* Priority when packet arrived. */
244 uint8_t table_id; /* OpenFlow table ID where flow was found. */
245 uint32_t sflow_n_outputs; /* Number of output ports. */
246 uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
247 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
248 bool exit; /* No further actions should be processed. */
251 static void action_xlate_ctx_init(struct action_xlate_ctx *,
252 struct ofproto_dpif *, const struct flow *,
253 ovs_be16 initial_tci, ovs_be64 cookie,
254 const struct ofpbuf *);
255 static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
256 const union ofp_action *in, size_t n_in);
258 /* An exact-match instantiation of an OpenFlow flow.
260 * A facet associates a "struct flow", which represents the Open vSwitch
261 * userspace idea of an exact-match flow, with one or more subfacets. Each
262 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
263 * the facet. When the kernel module (or other dpif implementation) and Open
264 * vSwitch userspace agree on the definition of a flow key, there is exactly
265 * one subfacet per facet. If the dpif implementation supports more-specific
266 * flow matching than userspace, however, a facet can have more than one
267 * subfacet, each of which corresponds to some distinction in flow that
268 * userspace simply doesn't understand.
270 * Flow expiration works in terms of subfacets, so a facet must have at least
271 * one subfacet or it will never expire, leaking memory. */
274 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
275 struct list list_node; /* In owning rule's 'facets' list. */
276 struct rule_dpif *rule; /* Owning rule. */
279 struct list subfacets;
280 long long int used; /* Time last used; time created if not used. */
287 * - Do include packets and bytes sent "by hand", e.g. with
290 * - Do include packets and bytes that were obtained from the datapath
291 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
292 * DPIF_FP_ZERO_STATS).
294 * - Do not include packets or bytes that can be obtained from the
295 * datapath for any existing subfacet.
297 uint64_t packet_count; /* Number of packets received. */
298 uint64_t byte_count; /* Number of bytes received. */
300 /* Resubmit statistics. */
301 uint64_t prev_packet_count; /* Number of packets from last stats push. */
302 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
303 long long int prev_used; /* Used time from last stats push. */
306 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
307 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
309 /* Properties of datapath actions.
311 * Every subfacet has its own actions because actions can differ slightly
312 * between splintered and non-splintered subfacets due to the VLAN tag
313 * being initially different (present vs. absent). All of them have these
314 * properties in common so we just store one copy of them here. */
315 bool may_install; /* Reassess actions for every packet? */
316 bool has_learn; /* Actions include NXAST_LEARN? */
317 bool has_normal; /* Actions output to OFPP_NORMAL? */
318 tag_type tags; /* Tags that would require revalidation. */
319 mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
322 static struct facet *facet_create(struct rule_dpif *, const struct flow *);
323 static void facet_remove(struct facet *);
324 static void facet_free(struct facet *);
326 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
327 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
328 const struct flow *);
329 static bool facet_revalidate(struct facet *);
330 static bool facet_check_consistency(struct facet *);
332 static void facet_flush_stats(struct facet *);
334 static void facet_update_time(struct facet *, long long int used);
335 static void facet_reset_counters(struct facet *);
336 static void facet_push_stats(struct facet *);
337 static void facet_account(struct facet *);
339 static bool facet_is_controller_flow(struct facet *);
341 /* A dpif flow and actions associated with a facet.
343 * See also the large comment on struct facet. */
346 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
347 struct list list_node; /* In struct facet's 'facets' list. */
348 struct facet *facet; /* Owning facet. */
352 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
353 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
354 * regenerate the ODP flow key from ->facet->flow. */
355 enum odp_key_fitness key_fitness;
359 long long int used; /* Time last used; time created if not used. */
361 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
362 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
366 * These should be essentially identical for every subfacet in a facet, but
367 * may differ in trivial ways due to VLAN splinters. */
368 size_t actions_len; /* Number of bytes in actions[]. */
369 struct nlattr *actions; /* Datapath actions. */
371 bool installed; /* Installed in datapath? */
373 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
374 * splinters can cause it to differ. This value should be removed when
375 * the VLAN splinters feature is no longer needed. */
376 ovs_be16 initial_tci; /* Initial VLAN TCI value. */
379 static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
380 const struct nlattr *key,
381 size_t key_len, ovs_be16 initial_tci);
382 static struct subfacet *subfacet_find(struct ofproto_dpif *,
383 const struct nlattr *key, size_t key_len);
384 static void subfacet_destroy(struct subfacet *);
385 static void subfacet_destroy__(struct subfacet *);
386 static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
388 static void subfacet_reset_dp_stats(struct subfacet *,
389 struct dpif_flow_stats *);
390 static void subfacet_update_time(struct subfacet *, long long int used);
391 static void subfacet_update_stats(struct subfacet *,
392 const struct dpif_flow_stats *);
393 static void subfacet_make_actions(struct subfacet *,
394 const struct ofpbuf *packet);
395 static int subfacet_install(struct subfacet *,
396 const struct nlattr *actions, size_t actions_len,
397 struct dpif_flow_stats *);
398 static void subfacet_uninstall(struct subfacet *);
404 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
405 struct list bundle_node; /* In struct ofbundle's "ports" list. */
406 struct cfm *cfm; /* Connectivity Fault Management, if any. */
407 tag_type tag; /* Tag associated with this port. */
408 uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
409 bool may_enable; /* May be enabled in bonds. */
412 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
413 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
414 long long int stp_state_entered;
416 struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
418 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
420 * This is deprecated. It is only for compatibility with broken device
421 * drivers in old versions of Linux that do not properly support VLANs when
422 * VLAN devices are not used. When broken device drivers are no longer in
423 * widespread use, we will delete these interfaces. */
424 uint16_t realdev_ofp_port;
428 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
429 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
430 * traffic egressing the 'ofport' with that priority should be marked with. */
431 struct priority_to_dscp {
432 struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */
433 uint32_t priority; /* Priority of this queue (see struct flow). */
435 uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */
438 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
440 * This is deprecated. It is only for compatibility with broken device drivers
441 * in old versions of Linux that do not properly support VLANs when VLAN
442 * devices are not used. When broken device drivers are no longer in
443 * widespread use, we will delete these interfaces. */
444 struct vlan_splinter {
445 struct hmap_node realdev_vid_node;
446 struct hmap_node vlandev_node;
447 uint16_t realdev_ofp_port;
448 uint16_t vlandev_ofp_port;
452 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
453 uint32_t realdev, ovs_be16 vlan_tci);
454 static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif *,
455 uint16_t vlandev, int *vid);
456 static void vsp_remove(struct ofport_dpif *);
457 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
459 static struct ofport_dpif *
460 ofport_dpif_cast(const struct ofport *ofport)
462 assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
463 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
466 static void port_run(struct ofport_dpif *);
467 static void port_wait(struct ofport_dpif *);
468 static int set_cfm(struct ofport *, const struct cfm_settings *);
469 static void ofport_clear_priorities(struct ofport_dpif *);
471 struct dpif_completion {
472 struct list list_node;
473 struct ofoperation *op;
476 /* Extra information about a classifier table.
477 * Currently used just for optimized flow revalidation. */
479 /* If either of these is nonnull, then this table has a form that allows
480 * flows to be tagged to avoid revalidating most flows for the most common
481 * kinds of flow table changes. */
482 struct cls_table *catchall_table; /* Table that wildcards all fields. */
483 struct cls_table *other_table; /* Table with any other wildcard set. */
484 uint32_t basis; /* Keeps each table's tags separate. */
487 struct ofproto_dpif {
488 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
497 struct netflow *netflow;
498 struct dpif_sflow *sflow;
499 struct hmap bundles; /* Contains "struct ofbundle"s. */
500 struct mac_learning *ml;
501 struct ofmirror *mirrors[MAX_MIRRORS];
502 bool has_bonded_bundles;
505 struct timer next_expiration;
509 struct hmap subfacets;
512 struct table_dpif tables[N_TABLES];
513 bool need_revalidate;
514 struct tag_set revalidate_set;
516 /* Support for debugging async flow mods. */
517 struct list completions;
519 bool has_bundle_action; /* True when the first bundle action appears. */
520 struct netdev_stats stats; /* To account packets generated and consumed in
525 long long int stp_last_tick;
527 /* VLAN splinters. */
528 struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
529 struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
532 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
533 * for debugging the asynchronous flow_mod implementation.) */
536 /* All existing ofproto_dpif instances, indexed by ->up.name. */
537 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
539 static void ofproto_dpif_unixctl_init(void);
541 static struct ofproto_dpif *
542 ofproto_dpif_cast(const struct ofproto *ofproto)
544 assert(ofproto->ofproto_class == &ofproto_dpif_class);
545 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
548 static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
550 static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
553 /* Packet processing. */
554 static void update_learning_table(struct ofproto_dpif *,
555 const struct flow *, int vlan,
558 #define FLOW_MISS_MAX_BATCH 50
559 static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
561 /* Flow expiration. */
562 static int expire(struct ofproto_dpif *);
565 static void send_netflow_active_timeouts(struct ofproto_dpif *);
568 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
570 compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
571 const struct flow *, uint32_t odp_port);
572 static void add_mirror_actions(struct action_xlate_ctx *ctx,
573 const struct flow *flow);
574 /* Global variables. */
575 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
577 /* Factory functions. */
580 enumerate_types(struct sset *types)
582 dp_enumerate_types(types);
586 enumerate_names(const char *type, struct sset *names)
588 return dp_enumerate_names(type, names);
592 del(const char *type, const char *name)
597 error = dpif_open(name, type, &dpif);
599 error = dpif_delete(dpif);
605 /* Basic life-cycle. */
607 static struct ofproto *
610 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
615 dealloc(struct ofproto *ofproto_)
617 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
622 construct(struct ofproto *ofproto_, int *n_tablesp)
624 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
625 const char *name = ofproto->up.name;
629 error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
631 VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
635 ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
636 ofproto->n_matches = 0;
638 dpif_flow_flush(ofproto->dpif);
639 dpif_recv_purge(ofproto->dpif);
641 error = dpif_recv_set(ofproto->dpif, true);
643 VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
644 dpif_close(ofproto->dpif);
648 ofproto->netflow = NULL;
649 ofproto->sflow = NULL;
651 hmap_init(&ofproto->bundles);
652 ofproto->ml = mac_learning_create();
653 for (i = 0; i < MAX_MIRRORS; i++) {
654 ofproto->mirrors[i] = NULL;
656 ofproto->has_bonded_bundles = false;
658 timer_set_duration(&ofproto->next_expiration, 1000);
660 hmap_init(&ofproto->facets);
661 hmap_init(&ofproto->subfacets);
663 for (i = 0; i < N_TABLES; i++) {
664 struct table_dpif *table = &ofproto->tables[i];
666 table->catchall_table = NULL;
667 table->other_table = NULL;
668 table->basis = random_uint32();
670 ofproto->need_revalidate = false;
671 tag_set_init(&ofproto->revalidate_set);
673 list_init(&ofproto->completions);
675 ofproto_dpif_unixctl_init();
677 ofproto->has_bundle_action = false;
679 hmap_init(&ofproto->vlandev_map);
680 hmap_init(&ofproto->realdev_vid_map);
682 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
683 hash_string(ofproto->up.name, 0));
685 *n_tablesp = N_TABLES;
686 memset(&ofproto->stats, 0, sizeof ofproto->stats);
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 classifier *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, 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;
2156 static struct ofport_dpif *
2157 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
2159 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2160 return ofport ? ofport_dpif_cast(ofport) : NULL;
2163 static struct ofport_dpif *
2164 get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
2166 return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
2170 ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
2171 struct dpif_port *dpif_port)
2173 ofproto_port->name = dpif_port->name;
2174 ofproto_port->type = dpif_port->type;
2175 ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
2179 port_run(struct ofport_dpif *ofport)
2181 bool enable = netdev_get_carrier(ofport->up.netdev);
2184 cfm_run(ofport->cfm);
2186 if (cfm_should_send_ccm(ofport->cfm)) {
2187 struct ofpbuf packet;
2189 ofpbuf_init(&packet, 0);
2190 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.opp.hw_addr);
2191 send_packet(ofport, &packet);
2192 ofpbuf_uninit(&packet);
2195 enable = enable && !cfm_get_fault(ofport->cfm)
2196 && cfm_get_opup(ofport->cfm);
2199 if (ofport->bundle) {
2200 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2203 if (ofport->may_enable != enable) {
2204 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2206 if (ofproto->has_bundle_action) {
2207 ofproto->need_revalidate = true;
2211 ofport->may_enable = enable;
2215 port_wait(struct ofport_dpif *ofport)
2218 cfm_wait(ofport->cfm);
2223 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2224 struct ofproto_port *ofproto_port)
2226 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2227 struct dpif_port dpif_port;
2230 error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
2232 ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
2238 port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
2240 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2244 error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
2246 *ofp_portp = odp_port_to_ofp_port(odp_port);
2252 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
2254 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2257 error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
2259 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
2261 /* The caller is going to close ofport->up.netdev. If this is a
2262 * bonded port, then the bond is using that netdev, so remove it
2263 * from the bond. The client will need to reconfigure everything
2264 * after deleting ports, so then the slave will get re-added. */
2265 bundle_remove(&ofport->up);
2272 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
2274 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2277 error = netdev_get_stats(ofport->up.netdev, stats);
2279 if (!error && ofport->odp_port == OVSP_LOCAL) {
2280 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2282 /* ofproto->stats.tx_packets represents packets that we created
2283 * internally and sent to some port (e.g. packets sent with
2284 * send_packet()). Account for them as if they had come from
2285 * OFPP_LOCAL and got forwarded. */
2287 if (stats->rx_packets != UINT64_MAX) {
2288 stats->rx_packets += ofproto->stats.tx_packets;
2291 if (stats->rx_bytes != UINT64_MAX) {
2292 stats->rx_bytes += ofproto->stats.tx_bytes;
2295 /* ofproto->stats.rx_packets represents packets that were received on
2296 * some port and we processed internally and dropped (e.g. STP).
2297 * Account fro them as if they had been forwarded to OFPP_LOCAL. */
2299 if (stats->tx_packets != UINT64_MAX) {
2300 stats->tx_packets += ofproto->stats.rx_packets;
2303 if (stats->tx_bytes != UINT64_MAX) {
2304 stats->tx_bytes += ofproto->stats.rx_bytes;
2311 /* Account packets for LOCAL port. */
2313 ofproto_update_local_port_stats(const struct ofproto *ofproto_,
2314 size_t tx_size, size_t rx_size)
2316 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2319 ofproto->stats.rx_packets++;
2320 ofproto->stats.rx_bytes += rx_size;
2323 ofproto->stats.tx_packets++;
2324 ofproto->stats.tx_bytes += tx_size;
2328 struct port_dump_state {
2329 struct dpif_port_dump dump;
2334 port_dump_start(const struct ofproto *ofproto_, void **statep)
2336 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2337 struct port_dump_state *state;
2339 *statep = state = xmalloc(sizeof *state);
2340 dpif_port_dump_start(&state->dump, ofproto->dpif);
2341 state->done = false;
2346 port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
2347 struct ofproto_port *port)
2349 struct port_dump_state *state = state_;
2350 struct dpif_port dpif_port;
2352 if (dpif_port_dump_next(&state->dump, &dpif_port)) {
2353 ofproto_port_from_dpif_port(port, &dpif_port);
2356 int error = dpif_port_dump_done(&state->dump);
2358 return error ? error : EOF;
2363 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
2365 struct port_dump_state *state = state_;
2368 dpif_port_dump_done(&state->dump);
2375 port_poll(const struct ofproto *ofproto_, char **devnamep)
2377 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2378 return dpif_port_poll(ofproto->dpif, devnamep);
2382 port_poll_wait(const struct ofproto *ofproto_)
2384 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2385 dpif_port_poll_wait(ofproto->dpif);
2389 port_is_lacp_current(const struct ofport *ofport_)
2391 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2392 return (ofport->bundle && ofport->bundle->lacp
2393 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
2397 /* Upcall handling. */
2399 /* Flow miss batching.
2401 * Some dpifs implement operations faster when you hand them off in a batch.
2402 * To allow batching, "struct flow_miss" queues the dpif-related work needed
2403 * for a given flow. Each "struct flow_miss" corresponds to sending one or
2404 * more packets, plus possibly installing the flow in the dpif.
2406 * So far we only batch the operations that affect flow setup time the most.
2407 * It's possible to batch more than that, but the benefit might be minimal. */
2409 struct hmap_node hmap_node;
2411 enum odp_key_fitness key_fitness;
2412 const struct nlattr *key;
2414 ovs_be16 initial_tci;
2415 struct list packets;
2418 struct flow_miss_op {
2419 struct dpif_op dpif_op;
2420 struct subfacet *subfacet;
2423 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
2424 * OpenFlow controller as necessary according to their individual
2425 * configurations. */
2427 send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
2428 const struct flow *flow)
2430 struct ofputil_packet_in pin;
2432 pin.packet = packet->data;
2433 pin.packet_len = packet->size;
2434 pin.total_len = packet->size;
2435 pin.reason = OFPR_NO_MATCH;
2440 pin.buffer_id = 0; /* not yet known */
2441 pin.send_len = 0; /* not used for flow table misses */
2443 flow_get_metadata(flow, &pin.fmd);
2445 /* Registers aren't meaningful on a miss. */
2446 memset(pin.fmd.reg_masks, 0, sizeof pin.fmd.reg_masks);
2448 connmgr_send_packet_in(ofproto->up.connmgr, &pin, flow);
2452 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
2453 const struct ofpbuf *packet)
2455 struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
2461 if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
2463 cfm_process_heartbeat(ofport->cfm, packet);
2466 } else if (ofport->bundle && ofport->bundle->lacp
2467 && flow->dl_type == htons(ETH_TYPE_LACP)) {
2469 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
2472 } else if (ofproto->stp && stp_should_process_flow(flow)) {
2474 stp_process_packet(ofport, packet);
2481 static struct flow_miss *
2482 flow_miss_create(struct hmap *todo, const struct flow *flow,
2483 enum odp_key_fitness key_fitness,
2484 const struct nlattr *key, size_t key_len,
2485 ovs_be16 initial_tci)
2487 uint32_t hash = flow_hash(flow, 0);
2488 struct flow_miss *miss;
2490 HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
2491 if (flow_equal(&miss->flow, flow)) {
2496 miss = xmalloc(sizeof *miss);
2497 hmap_insert(todo, &miss->hmap_node, hash);
2499 miss->key_fitness = key_fitness;
2501 miss->key_len = key_len;
2502 miss->initial_tci = initial_tci;
2503 list_init(&miss->packets);
2508 handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
2509 struct flow_miss_op *ops, size_t *n_ops)
2511 const struct flow *flow = &miss->flow;
2512 struct ofpbuf *packet, *next_packet;
2513 struct subfacet *subfacet;
2514 struct facet *facet;
2516 facet = facet_lookup_valid(ofproto, flow);
2518 struct rule_dpif *rule;
2520 rule = rule_dpif_lookup(ofproto, flow, 0);
2522 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
2523 struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
2525 if (port->up.opp.config & htonl(OFPPC_NO_PACKET_IN)) {
2526 COVERAGE_INC(ofproto_dpif_no_packet_in);
2527 /* XXX install 'drop' flow entry */
2531 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
2535 LIST_FOR_EACH (packet, list_node, &miss->packets) {
2536 send_packet_in_miss(ofproto, packet, flow);
2542 facet = facet_create(rule, flow);
2545 subfacet = subfacet_create(facet,
2546 miss->key_fitness, miss->key, miss->key_len,
2549 LIST_FOR_EACH_SAFE (packet, next_packet, list_node, &miss->packets) {
2550 struct dpif_flow_stats stats;
2551 struct flow_miss_op *op;
2552 struct dpif_execute *execute;
2554 ofproto->n_matches++;
2556 if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
2558 * Extra-special case for fail-open mode.
2560 * We are in fail-open mode and the packet matched the fail-open
2561 * rule, but we are connected to a controller too. We should send
2562 * the packet up to the controller in the hope that it will try to
2563 * set up a flow and thereby allow us to exit fail-open.
2565 * See the top-level comment in fail-open.c for more information.
2567 send_packet_in_miss(ofproto, packet, flow);
2570 if (!facet->may_install || !subfacet->actions) {
2571 subfacet_make_actions(subfacet, packet);
2574 dpif_flow_stats_extract(&facet->flow, packet, &stats);
2575 subfacet_update_stats(subfacet, &stats);
2577 if (!subfacet->actions_len) {
2578 /* No actions to execute, so skip talking to the dpif. */
2582 if (flow->vlan_tci != subfacet->initial_tci) {
2583 /* This packet was received on a VLAN splinter port. We added
2584 * a VLAN to the packet to make the packet resemble the flow,
2585 * but the actions were composed assuming that the packet
2586 * contained no VLAN. So, we must remove the VLAN header from
2587 * the packet before trying to execute the actions. */
2588 eth_pop_vlan(packet);
2591 op = &ops[(*n_ops)++];
2592 execute = &op->dpif_op.u.execute;
2593 op->subfacet = subfacet;
2594 op->dpif_op.type = DPIF_OP_EXECUTE;
2595 execute->key = miss->key;
2596 execute->key_len = miss->key_len;
2597 execute->actions = (facet->may_install
2599 : xmemdup(subfacet->actions,
2600 subfacet->actions_len));
2601 execute->actions_len = subfacet->actions_len;
2602 execute->packet = packet;
2605 if (facet->may_install && subfacet->key_fitness != ODP_FIT_TOO_LITTLE) {
2606 struct flow_miss_op *op = &ops[(*n_ops)++];
2607 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
2609 op->subfacet = subfacet;
2610 op->dpif_op.type = DPIF_OP_FLOW_PUT;
2611 put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
2612 put->key = miss->key;
2613 put->key_len = miss->key_len;
2614 put->actions = subfacet->actions;
2615 put->actions_len = subfacet->actions_len;
2620 /* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
2621 * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
2622 * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
2623 * what a flow key should contain.
2625 * This function also includes some logic to help make VLAN splinters
2626 * transparent to the rest of the upcall processing logic. In particular, if
2627 * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
2628 * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
2629 * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
2631 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
2632 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
2633 * (This differs from the value returned in flow->vlan_tci only for packets
2634 * received on VLAN splinters.)
2636 static enum odp_key_fitness
2637 ofproto_dpif_extract_flow_key(const struct ofproto_dpif *ofproto,
2638 const struct nlattr *key, size_t key_len,
2639 struct flow *flow, ovs_be16 *initial_tci,
2640 struct ofpbuf *packet)
2642 enum odp_key_fitness fitness;
2646 fitness = odp_flow_key_to_flow(key, key_len, flow);
2647 if (fitness == ODP_FIT_ERROR) {
2650 *initial_tci = flow->vlan_tci;
2652 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
2654 /* Cause the flow to be processed as if it came in on the real device
2655 * with the VLAN device's VLAN ID. */
2656 flow->in_port = realdev;
2657 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
2659 /* Make the packet resemble the flow, so that it gets sent to an
2660 * OpenFlow controller properly, so that it looks correct for
2661 * sFlow, and so that flow_extract() will get the correct vlan_tci
2662 * if it is called on 'packet'.
2664 * The allocated space inside 'packet' probably also contains
2665 * 'key', that is, both 'packet' and 'key' are probably part of a
2666 * struct dpif_upcall (see the large comment on that structure
2667 * definition), so pushing data on 'packet' is in general not a
2668 * good idea since it could overwrite 'key' or free it as a side
2669 * effect. However, it's OK in this special case because we know
2670 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
2671 * will just overwrite the 4-byte "struct nlattr", which is fine
2672 * since we don't need that header anymore. */
2673 eth_push_vlan(packet, flow->vlan_tci);
2676 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
2677 if (fitness == ODP_FIT_PERFECT) {
2678 fitness = ODP_FIT_TOO_MUCH;
2686 handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
2689 struct dpif_upcall *upcall;
2690 struct flow_miss *miss, *next_miss;
2691 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
2692 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
2701 /* Construct the to-do list.
2703 * This just amounts to extracting the flow from each packet and sticking
2704 * the packets that have the same flow in the same "flow_miss" structure so
2705 * that we can process them together. */
2707 for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
2708 enum odp_key_fitness fitness;
2709 struct flow_miss *miss;
2710 ovs_be16 initial_tci;
2713 /* Obtain metadata and check userspace/kernel agreement on flow match,
2714 * then set 'flow''s header pointers. */
2715 fitness = ofproto_dpif_extract_flow_key(ofproto,
2716 upcall->key, upcall->key_len,
2717 &flow, &initial_tci,
2719 if (fitness == ODP_FIT_ERROR) {
2720 ofpbuf_delete(upcall->packet);
2723 flow_extract(upcall->packet, flow.skb_priority, flow.tun_id,
2724 flow.in_port, &flow);
2726 /* Handle 802.1ag, LACP, and STP specially. */
2727 if (process_special(ofproto, &flow, upcall->packet)) {
2728 ofproto_update_local_port_stats(&ofproto->up,
2729 0, upcall->packet->size);
2730 ofpbuf_delete(upcall->packet);
2731 ofproto->n_matches++;
2735 /* Add other packets to a to-do list. */
2736 miss = flow_miss_create(&todo, &flow, fitness,
2737 upcall->key, upcall->key_len, initial_tci);
2738 list_push_back(&miss->packets, &upcall->packet->list_node);
2741 /* Process each element in the to-do list, constructing the set of
2742 * operations to batch. */
2744 HMAP_FOR_EACH (miss, hmap_node, &todo) {
2745 handle_flow_miss(ofproto, miss, flow_miss_ops, &n_ops);
2747 assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
2749 /* Execute batch. */
2750 for (i = 0; i < n_ops; i++) {
2751 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
2753 dpif_operate(ofproto->dpif, dpif_ops, n_ops);
2755 /* Free memory and update facets. */
2756 for (i = 0; i < n_ops; i++) {
2757 struct flow_miss_op *op = &flow_miss_ops[i];
2758 struct dpif_execute *execute;
2760 switch (op->dpif_op.type) {
2761 case DPIF_OP_EXECUTE:
2762 execute = &op->dpif_op.u.execute;
2763 if (op->subfacet->actions != execute->actions) {
2764 free((struct nlattr *) execute->actions);
2768 case DPIF_OP_FLOW_PUT:
2769 if (!op->dpif_op.error) {
2770 op->subfacet->installed = true;
2775 HMAP_FOR_EACH_SAFE (miss, next_miss, hmap_node, &todo) {
2776 ofpbuf_list_delete(&miss->packets);
2777 hmap_remove(&todo, &miss->hmap_node);
2780 hmap_destroy(&todo);
2784 handle_userspace_upcall(struct ofproto_dpif *ofproto,
2785 struct dpif_upcall *upcall)
2787 struct user_action_cookie cookie;
2788 enum odp_key_fitness fitness;
2789 ovs_be16 initial_tci;
2792 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
2794 fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
2795 upcall->key_len, &flow,
2796 &initial_tci, upcall->packet);
2797 if (fitness == ODP_FIT_ERROR) {
2798 ofpbuf_delete(upcall->packet);
2802 if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
2803 if (ofproto->sflow) {
2804 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
2808 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
2810 ofpbuf_delete(upcall->packet);
2814 handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
2816 struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
2820 assert (max_batch <= FLOW_MISS_MAX_BATCH);
2823 for (i = 0; i < max_batch; i++) {
2824 struct dpif_upcall *upcall = &misses[n_misses];
2827 error = dpif_recv(ofproto->dpif, upcall);
2832 switch (upcall->type) {
2833 case DPIF_UC_ACTION:
2834 handle_userspace_upcall(ofproto, upcall);
2838 /* Handle it later. */
2842 case DPIF_N_UC_TYPES:
2844 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
2850 handle_miss_upcalls(ofproto, misses, n_misses);
2855 /* Flow expiration. */
2857 static int subfacet_max_idle(const struct ofproto_dpif *);
2858 static void update_stats(struct ofproto_dpif *);
2859 static void rule_expire(struct rule_dpif *);
2860 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
2862 /* This function is called periodically by run(). Its job is to collect
2863 * updates for the flows that have been installed into the datapath, most
2864 * importantly when they last were used, and then use that information to
2865 * expire flows that have not been used recently.
2867 * Returns the number of milliseconds after which it should be called again. */
2869 expire(struct ofproto_dpif *ofproto)
2871 struct rule_dpif *rule, *next_rule;
2872 struct classifier *table;
2875 /* Update stats for each flow in the datapath. */
2876 update_stats(ofproto);
2878 /* Expire subfacets that have been idle too long. */
2879 dp_max_idle = subfacet_max_idle(ofproto);
2880 expire_subfacets(ofproto, dp_max_idle);
2882 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
2883 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
2884 struct cls_cursor cursor;
2886 cls_cursor_init(&cursor, table, NULL);
2887 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
2892 /* All outstanding data in existing flows has been accounted, so it's a
2893 * good time to do bond rebalancing. */
2894 if (ofproto->has_bonded_bundles) {
2895 struct ofbundle *bundle;
2897 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2899 bond_rebalance(bundle->bond, &ofproto->revalidate_set);
2904 return MIN(dp_max_idle, 1000);
2907 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
2909 * This function also pushes statistics updates to rules which each facet
2910 * resubmits into. Generally these statistics will be accurate. However, if a
2911 * facet changes the rule it resubmits into at some time in between
2912 * update_stats() runs, it is possible that statistics accrued to the
2913 * old rule will be incorrectly attributed to the new rule. This could be
2914 * avoided by calling update_stats() whenever rules are created or
2915 * deleted. However, the performance impact of making so many calls to the
2916 * datapath do not justify the benefit of having perfectly accurate statistics.
2919 update_stats(struct ofproto_dpif *p)
2921 const struct dpif_flow_stats *stats;
2922 struct dpif_flow_dump dump;
2923 const struct nlattr *key;
2926 dpif_flow_dump_start(&dump, p->dpif);
2927 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
2928 struct subfacet *subfacet;
2930 subfacet = subfacet_find(p, key, key_len);
2931 if (subfacet && subfacet->installed) {
2932 struct facet *facet = subfacet->facet;
2934 if (stats->n_packets >= subfacet->dp_packet_count) {
2935 uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
2936 facet->packet_count += extra;
2938 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
2941 if (stats->n_bytes >= subfacet->dp_byte_count) {
2942 facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
2944 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
2947 subfacet->dp_packet_count = stats->n_packets;
2948 subfacet->dp_byte_count = stats->n_bytes;
2950 subfacet_update_time(subfacet, stats->used);
2951 facet_account(facet);
2952 facet_push_stats(facet);
2954 if (!VLOG_DROP_WARN(&rl)) {
2958 odp_flow_key_format(key, key_len, &s);
2959 VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
2963 COVERAGE_INC(facet_unexpected);
2964 /* There's a flow in the datapath that we know nothing about, or a
2965 * flow that shouldn't be installed but was anyway. Delete it. */
2966 dpif_flow_del(p->dpif, key, key_len, NULL);
2969 dpif_flow_dump_done(&dump);
2972 /* Calculates and returns the number of milliseconds of idle time after which
2973 * subfacets should expire from the datapath. When a subfacet expires, we fold
2974 * its statistics into its facet, and when a facet's last subfacet expires, we
2975 * fold its statistic into its rule. */
2977 subfacet_max_idle(const struct ofproto_dpif *ofproto)
2980 * Idle time histogram.
2982 * Most of the time a switch has a relatively small number of subfacets.
2983 * When this is the case we might as well keep statistics for all of them
2984 * in userspace and to cache them in the kernel datapath for performance as
2987 * As the number of subfacets increases, the memory required to maintain
2988 * statistics about them in userspace and in the kernel becomes
2989 * significant. However, with a large number of subfacets it is likely
2990 * that only a few of them are "heavy hitters" that consume a large amount
2991 * of bandwidth. At this point, only heavy hitters are worth caching in
2992 * the kernel and maintaining in userspaces; other subfacets we can
2995 * The technique used to compute the idle time is to build a histogram with
2996 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
2997 * that is installed in the kernel gets dropped in the appropriate bucket.
2998 * After the histogram has been built, we compute the cutoff so that only
2999 * the most-recently-used 1% of subfacets (but at least
3000 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3001 * the most-recently-used bucket of subfacets is kept, so actually an
3002 * arbitrary number of subfacets can be kept in any given expiration run
3003 * (though the next run will delete most of those unless they receive
3006 * This requires a second pass through the subfacets, in addition to the
3007 * pass made by update_stats(), because the former function never looks at
3008 * uninstallable subfacets.
3010 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3011 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3012 int buckets[N_BUCKETS] = { 0 };
3013 int total, subtotal, bucket;
3014 struct subfacet *subfacet;
3018 total = hmap_count(&ofproto->subfacets);
3019 if (total <= ofproto->up.flow_eviction_threshold) {
3020 return N_BUCKETS * BUCKET_WIDTH;
3023 /* Build histogram. */
3025 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
3026 long long int idle = now - subfacet->used;
3027 int bucket = (idle <= 0 ? 0
3028 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3029 : (unsigned int) idle / BUCKET_WIDTH);
3033 /* Find the first bucket whose flows should be expired. */
3034 subtotal = bucket = 0;
3036 subtotal += buckets[bucket++];
3037 } while (bucket < N_BUCKETS &&
3038 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
3040 if (VLOG_IS_DBG_ENABLED()) {
3044 ds_put_cstr(&s, "keep");
3045 for (i = 0; i < N_BUCKETS; i++) {
3047 ds_put_cstr(&s, ", drop");
3050 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3053 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
3057 return bucket * BUCKET_WIDTH;
3061 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
3063 long long int cutoff = time_msec() - dp_max_idle;
3064 struct subfacet *subfacet, *next_subfacet;
3066 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3067 &ofproto->subfacets) {
3068 if (subfacet->used < cutoff) {
3069 subfacet_destroy(subfacet);
3074 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3075 * then delete it entirely. */
3077 rule_expire(struct rule_dpif *rule)
3079 struct facet *facet, *next_facet;
3083 /* Has 'rule' expired? */
3085 if (rule->up.hard_timeout
3086 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
3087 reason = OFPRR_HARD_TIMEOUT;
3088 } else if (rule->up.idle_timeout && list_is_empty(&rule->facets)
3089 && now > rule->used + rule->up.idle_timeout * 1000) {
3090 reason = OFPRR_IDLE_TIMEOUT;
3095 COVERAGE_INC(ofproto_dpif_expired);
3097 /* Update stats. (This is a no-op if the rule expired due to an idle
3098 * timeout, because that only happens when the rule has no facets left.) */
3099 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
3100 facet_remove(facet);
3103 /* Get rid of the rule. */
3104 ofproto_rule_expire(&rule->up, reason);
3109 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
3111 * The caller must already have determined that no facet with an identical
3112 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
3113 * the ofproto's classifier table.
3115 * The facet will initially have no subfacets. The caller should create (at
3116 * least) one subfacet with subfacet_create(). */
3117 static struct facet *
3118 facet_create(struct rule_dpif *rule, const struct flow *flow)
3120 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3121 struct facet *facet;
3123 facet = xzalloc(sizeof *facet);
3124 facet->used = time_msec();
3125 hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
3126 list_push_back(&rule->facets, &facet->list_node);
3128 facet->flow = *flow;
3129 list_init(&facet->subfacets);
3130 netflow_flow_init(&facet->nf_flow);
3131 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3137 facet_free(struct facet *facet)
3142 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
3143 * 'packet', which arrived on 'in_port'.
3145 * Takes ownership of 'packet'. */
3147 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
3148 const struct nlattr *odp_actions, size_t actions_len,
3149 struct ofpbuf *packet)
3151 struct odputil_keybuf keybuf;
3155 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
3156 odp_flow_key_from_flow(&key, flow);
3158 error = dpif_execute(ofproto->dpif, key.data, key.size,
3159 odp_actions, actions_len, packet);
3161 ofpbuf_delete(packet);
3165 /* Remove 'facet' from 'ofproto' and free up the associated memory:
3167 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3168 * rule's statistics, via subfacet_uninstall().
3170 * - Removes 'facet' from its rule and from ofproto->facets.
3173 facet_remove(struct facet *facet)
3175 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3176 struct subfacet *subfacet, *next_subfacet;
3178 assert(!list_is_empty(&facet->subfacets));
3180 /* First uninstall all of the subfacets to get final statistics. */
3181 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3182 subfacet_uninstall(subfacet);
3185 /* Flush the final stats to the rule.
3187 * This might require us to have at least one subfacet around so that we
3188 * can use its actions for accounting in facet_account(), which is why we
3189 * have uninstalled but not yet destroyed the subfacets. */
3190 facet_flush_stats(facet);
3192 /* Now we're really all done so destroy everything. */
3193 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
3194 &facet->subfacets) {
3195 subfacet_destroy__(subfacet);
3197 hmap_remove(&ofproto->facets, &facet->hmap_node);
3198 list_remove(&facet->list_node);
3203 facet_account(struct facet *facet)
3205 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3207 struct subfacet *subfacet;
3208 const struct nlattr *a;
3212 if (facet->byte_count <= facet->accounted_bytes) {
3215 n_bytes = facet->byte_count - facet->accounted_bytes;
3216 facet->accounted_bytes = facet->byte_count;
3218 /* Feed information from the active flows back into the learning table to
3219 * ensure that table is always in sync with what is actually flowing
3220 * through the datapath. */
3221 if (facet->has_learn || facet->has_normal) {
3222 struct action_xlate_ctx ctx;
3224 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3225 facet->flow.vlan_tci,
3226 facet->rule->up.flow_cookie, NULL);
3227 ctx.may_learn = true;
3228 ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
3229 facet->rule->up.n_actions));
3232 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
3236 /* This loop feeds byte counters to bond_account() for rebalancing to use
3237 * as a basis. We also need to track the actual VLAN on which the packet
3238 * is going to be sent to ensure that it matches the one passed to
3239 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3242 * We use the actions from an arbitrary subfacet because they should all
3243 * be equally valid for our purpose. */
3244 subfacet = CONTAINER_OF(list_front(&facet->subfacets),
3245 struct subfacet, list_node);
3246 vlan_tci = facet->flow.vlan_tci;
3247 NL_ATTR_FOR_EACH_UNSAFE (a, left,
3248 subfacet->actions, subfacet->actions_len) {
3249 const struct ovs_action_push_vlan *vlan;
3250 struct ofport_dpif *port;
3252 switch (nl_attr_type(a)) {
3253 case OVS_ACTION_ATTR_OUTPUT:
3254 port = get_odp_port(ofproto, nl_attr_get_u32(a));
3255 if (port && port->bundle && port->bundle->bond) {
3256 bond_account(port->bundle->bond, &facet->flow,
3257 vlan_tci_to_vid(vlan_tci), n_bytes);
3261 case OVS_ACTION_ATTR_POP_VLAN:
3262 vlan_tci = htons(0);
3265 case OVS_ACTION_ATTR_PUSH_VLAN:
3266 vlan = nl_attr_get(a);
3267 vlan_tci = vlan->vlan_tci;
3273 /* Returns true if the only action for 'facet' is to send to the controller.
3274 * (We don't report NetFlow expiration messages for such facets because they
3275 * are just part of the control logic for the network, not real traffic). */
3277 facet_is_controller_flow(struct facet *facet)
3280 && facet->rule->up.n_actions == 1
3281 && action_outputs_to_port(&facet->rule->up.actions[0],
3282 htons(OFPP_CONTROLLER)));
3285 /* Folds all of 'facet''s statistics into its rule. Also updates the
3286 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
3287 * 'facet''s statistics in the datapath should have been zeroed and folded into
3288 * its packet and byte counts before this function is called. */
3290 facet_flush_stats(struct facet *facet)
3292 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3293 struct subfacet *subfacet;
3295 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3296 assert(!subfacet->dp_byte_count);
3297 assert(!subfacet->dp_packet_count);
3300 facet_push_stats(facet);
3301 facet_account(facet);
3303 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
3304 struct ofexpired expired;
3305 expired.flow = facet->flow;
3306 expired.packet_count = facet->packet_count;
3307 expired.byte_count = facet->byte_count;
3308 expired.used = facet->used;
3309 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
3312 facet->rule->packet_count += facet->packet_count;
3313 facet->rule->byte_count += facet->byte_count;
3315 /* Reset counters to prevent double counting if 'facet' ever gets
3317 facet_reset_counters(facet);
3319 netflow_flow_clear(&facet->nf_flow);
3322 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3323 * Returns it if found, otherwise a null pointer.
3325 * The returned facet might need revalidation; use facet_lookup_valid()
3326 * instead if that is important. */
3327 static struct facet *
3328 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
3330 struct facet *facet;
3332 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
3334 if (flow_equal(flow, &facet->flow)) {
3342 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3343 * Returns it if found, otherwise a null pointer.
3345 * The returned facet is guaranteed to be valid. */
3346 static struct facet *
3347 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
3349 struct facet *facet = facet_find(ofproto, flow);
3351 /* The facet we found might not be valid, since we could be in need of
3352 * revalidation. If it is not valid, don't return it. */
3354 && (ofproto->need_revalidate
3355 || tag_set_intersects(&ofproto->revalidate_set, facet->tags))
3356 && !facet_revalidate(facet)) {
3357 COVERAGE_INC(facet_invalidated);
3365 facet_check_consistency(struct facet *facet)
3367 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3369 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3371 struct rule_dpif *rule;
3372 struct subfacet *subfacet;
3373 bool may_log = false;
3376 /* Check the rule for consistency. */
3377 rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3379 if (!VLOG_DROP_WARN(&rl)) {
3380 char *s = flow_to_string(&facet->flow);
3381 VLOG_WARN("%s: facet should not exist", s);
3385 } else if (rule != facet->rule) {
3386 may_log = !VLOG_DROP_WARN(&rl);
3392 flow_format(&s, &facet->flow);
3393 ds_put_format(&s, ": facet associated with wrong rule (was "
3394 "table=%"PRIu8",", facet->rule->up.table_id);
3395 cls_rule_format(&facet->rule->up.cr, &s);
3396 ds_put_format(&s, ") (should have been table=%"PRIu8",",
3398 cls_rule_format(&rule->up.cr, &s);
3399 ds_put_char(&s, ')');
3401 VLOG_WARN("%s", ds_cstr(&s));
3408 /* Check the datapath actions for consistency. */
3409 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3410 struct action_xlate_ctx ctx;
3411 struct ofpbuf *odp_actions;
3412 bool actions_changed;
3413 bool should_install;
3415 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3416 subfacet->initial_tci, rule->up.flow_cookie,
3418 odp_actions = xlate_actions(&ctx, rule->up.actions,
3419 rule->up.n_actions);
3421 should_install = (ctx.may_set_up_flow
3422 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3423 if (!should_install && !subfacet->installed) {
3424 /* The actions for uninstallable flows may vary from one packet to
3425 * the next, so don't compare the actions. */
3429 actions_changed = (subfacet->actions_len != odp_actions->size
3430 || memcmp(subfacet->actions, odp_actions->data,
3431 subfacet->actions_len));
3432 if (should_install != subfacet->installed || actions_changed) {
3434 may_log = !VLOG_DROP_WARN(&rl);
3439 struct odputil_keybuf keybuf;
3444 subfacet_get_key(subfacet, &keybuf, &key);
3445 odp_flow_key_format(key.data, key.size, &s);
3447 ds_put_cstr(&s, ": inconsistency in subfacet");
3448 if (should_install != subfacet->installed) {
3449 enum odp_key_fitness fitness = subfacet->key_fitness;
3451 ds_put_format(&s, " (should%s have been installed)",
3452 should_install ? "" : " not");
3453 ds_put_format(&s, " (may_set_up_flow=%s, fitness=%s)",
3454 ctx.may_set_up_flow ? "true" : "false",
3455 odp_key_fitness_to_string(fitness));
3457 if (actions_changed) {
3458 ds_put_cstr(&s, " (actions were: ");
3459 format_odp_actions(&s, subfacet->actions,
3460 subfacet->actions_len);
3461 ds_put_cstr(&s, ") (correct actions: ");
3462 format_odp_actions(&s, odp_actions->data,
3464 ds_put_char(&s, ')');
3466 ds_put_cstr(&s, " (actions: ");
3467 format_odp_actions(&s, subfacet->actions,
3468 subfacet->actions_len);
3469 ds_put_char(&s, ')');
3471 VLOG_WARN("%s", ds_cstr(&s));
3477 ofpbuf_delete(odp_actions);
3483 /* Re-searches the classifier for 'facet':
3485 * - If the rule found is different from 'facet''s current rule, moves
3486 * 'facet' to the new rule and recompiles its actions.
3488 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
3489 * where it is and recompiles its actions anyway.
3491 * - If there is none, destroys 'facet'.
3493 * Returns true if 'facet' still exists, false if it has been destroyed. */
3495 facet_revalidate(struct facet *facet)
3497 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3499 struct nlattr *odp_actions;
3502 struct actions *new_actions;
3504 struct action_xlate_ctx ctx;
3505 struct rule_dpif *new_rule;
3506 struct subfacet *subfacet;
3507 bool actions_changed;
3510 COVERAGE_INC(facet_revalidate);
3512 /* Determine the new rule. */
3513 new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3515 /* No new rule, so delete the facet. */
3516 facet_remove(facet);
3520 /* Calculate new datapath actions.
3522 * We do not modify any 'facet' state yet, because we might need to, e.g.,
3523 * emit a NetFlow expiration and, if so, we need to have the old state
3524 * around to properly compose it. */
3526 /* If the datapath actions changed or the installability changed,
3527 * then we need to talk to the datapath. */
3530 memset(&ctx, 0, sizeof ctx);
3531 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3532 struct ofpbuf *odp_actions;
3533 bool should_install;
3535 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3536 subfacet->initial_tci, new_rule->up.flow_cookie,
3538 odp_actions = xlate_actions(&ctx, new_rule->up.actions,
3539 new_rule->up.n_actions);
3540 actions_changed = (subfacet->actions_len != odp_actions->size
3541 || memcmp(subfacet->actions, odp_actions->data,
3542 subfacet->actions_len));
3544 should_install = (ctx.may_set_up_flow
3545 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3546 if (actions_changed || should_install != subfacet->installed) {
3547 if (should_install) {
3548 struct dpif_flow_stats stats;
3550 subfacet_install(subfacet,
3551 odp_actions->data, odp_actions->size, &stats);
3552 subfacet_update_stats(subfacet, &stats);
3554 subfacet_uninstall(subfacet);
3558 new_actions = xcalloc(list_size(&facet->subfacets),
3559 sizeof *new_actions);
3561 new_actions[i].odp_actions = xmemdup(odp_actions->data,
3563 new_actions[i].actions_len = odp_actions->size;
3566 ofpbuf_delete(odp_actions);
3570 facet_flush_stats(facet);
3573 /* Update 'facet' now that we've taken care of all the old state. */
3574 facet->tags = ctx.tags;
3575 facet->nf_flow.output_iface = ctx.nf_output_iface;
3576 facet->may_install = ctx.may_set_up_flow;
3577 facet->has_learn = ctx.has_learn;
3578 facet->has_normal = ctx.has_normal;
3579 facet->mirrors = ctx.mirrors;
3582 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3583 if (new_actions[i].odp_actions) {
3584 free(subfacet->actions);
3585 subfacet->actions = new_actions[i].odp_actions;
3586 subfacet->actions_len = new_actions[i].actions_len;
3592 if (facet->rule != new_rule) {
3593 COVERAGE_INC(facet_changed_rule);
3594 list_remove(&facet->list_node);
3595 list_push_back(&new_rule->facets, &facet->list_node);
3596 facet->rule = new_rule;
3597 facet->used = new_rule->up.created;
3598 facet->prev_used = facet->used;
3604 /* Updates 'facet''s used time. Caller is responsible for calling
3605 * facet_push_stats() to update the flows which 'facet' resubmits into. */
3607 facet_update_time(struct facet *facet, long long int used)
3609 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3610 if (used > facet->used) {
3612 if (used > facet->rule->used) {
3613 facet->rule->used = used;
3615 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
3620 facet_reset_counters(struct facet *facet)
3622 facet->packet_count = 0;
3623 facet->byte_count = 0;
3624 facet->prev_packet_count = 0;
3625 facet->prev_byte_count = 0;
3626 facet->accounted_bytes = 0;
3630 facet_push_stats(struct facet *facet)
3632 uint64_t new_packets, new_bytes;
3634 assert(facet->packet_count >= facet->prev_packet_count);
3635 assert(facet->byte_count >= facet->prev_byte_count);
3636 assert(facet->used >= facet->prev_used);
3638 new_packets = facet->packet_count - facet->prev_packet_count;
3639 new_bytes = facet->byte_count - facet->prev_byte_count;
3641 if (new_packets || new_bytes || facet->used > facet->prev_used) {
3642 facet->prev_packet_count = facet->packet_count;
3643 facet->prev_byte_count = facet->byte_count;
3644 facet->prev_used = facet->used;
3646 flow_push_stats(facet->rule, &facet->flow,
3647 new_packets, new_bytes, facet->used);
3649 update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
3650 facet->mirrors, new_packets, new_bytes);
3654 struct ofproto_push {
3655 struct action_xlate_ctx ctx;
3662 push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
3664 struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
3667 rule->packet_count += push->packets;
3668 rule->byte_count += push->bytes;
3669 rule->used = MAX(push->used, rule->used);
3673 /* Pushes flow statistics to the rules which 'flow' resubmits into given
3674 * 'rule''s actions and mirrors. */
3676 flow_push_stats(const struct rule_dpif *rule,
3677 const struct flow *flow, uint64_t packets, uint64_t bytes,
3680 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3681 struct ofproto_push push;
3683 push.packets = packets;
3687 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci,
3688 rule->up.flow_cookie, NULL);
3689 push.ctx.resubmit_hook = push_resubmit;
3690 ofpbuf_delete(xlate_actions(&push.ctx,
3691 rule->up.actions, rule->up.n_actions));
3696 static struct subfacet *
3697 subfacet_find__(struct ofproto_dpif *ofproto,
3698 const struct nlattr *key, size_t key_len, uint32_t key_hash,
3699 const struct flow *flow)
3701 struct subfacet *subfacet;
3703 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
3704 &ofproto->subfacets) {
3706 ? (subfacet->key_len == key_len
3707 && !memcmp(key, subfacet->key, key_len))
3708 : flow_equal(flow, &subfacet->facet->flow)) {
3716 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
3717 * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if
3718 * there is one, otherwise creates and returns a new subfacet.
3720 * If the returned subfacet is new, then subfacet->actions will be NULL, in
3721 * which case the caller must populate the actions with
3722 * subfacet_make_actions(). */
3723 static struct subfacet *
3724 subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
3725 const struct nlattr *key, size_t key_len, ovs_be16 initial_tci)
3727 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3728 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3729 struct subfacet *subfacet;
3731 subfacet = subfacet_find__(ofproto, key, key_len, key_hash, &facet->flow);
3733 if (subfacet->facet == facet) {
3737 /* This shouldn't happen. */
3738 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
3739 subfacet_destroy(subfacet);
3742 subfacet = xzalloc(sizeof *subfacet);
3743 hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
3744 list_push_back(&facet->subfacets, &subfacet->list_node);
3745 subfacet->facet = facet;
3746 subfacet->used = time_msec();
3747 subfacet->key_fitness = key_fitness;
3748 if (key_fitness != ODP_FIT_PERFECT) {
3749 subfacet->key = xmemdup(key, key_len);
3750 subfacet->key_len = key_len;
3752 subfacet->installed = false;
3753 subfacet->initial_tci = initial_tci;
3758 /* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
3759 * 'flow'. Returns the subfacet if one exists, otherwise NULL. */
3760 static struct subfacet *
3761 subfacet_find(struct ofproto_dpif *ofproto,
3762 const struct nlattr *key, size_t key_len)
3764 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3765 enum odp_key_fitness fitness;
3768 fitness = odp_flow_key_to_flow(key, key_len, &flow);
3769 if (fitness == ODP_FIT_ERROR) {
3773 return subfacet_find__(ofproto, key, key_len, key_hash, &flow);
3776 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
3777 * its facet within 'ofproto', and frees it. */
3779 subfacet_destroy__(struct subfacet *subfacet)
3781 struct facet *facet = subfacet->facet;
3782 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3784 subfacet_uninstall(subfacet);
3785 hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
3786 list_remove(&subfacet->list_node);
3787 free(subfacet->key);
3788 free(subfacet->actions);
3792 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
3793 * last remaining subfacet in its facet destroys the facet too. */
3795 subfacet_destroy(struct subfacet *subfacet)
3797 struct facet *facet = subfacet->facet;
3799 if (list_is_singleton(&facet->subfacets)) {
3800 /* facet_remove() needs at least one subfacet (it will remove it). */
3801 facet_remove(facet);
3803 subfacet_destroy__(subfacet);
3807 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
3808 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
3809 * for use as temporary storage. */
3811 subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
3814 if (!subfacet->key) {
3815 ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
3816 odp_flow_key_from_flow(key, &subfacet->facet->flow);
3818 ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
3822 /* Composes the datapath actions for 'subfacet' based on its rule's actions. */
3824 subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet)
3826 struct facet *facet = subfacet->facet;
3827 const struct rule_dpif *rule = facet->rule;
3828 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3829 struct ofpbuf *odp_actions;
3830 struct action_xlate_ctx ctx;
3832 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
3833 rule->up.flow_cookie, packet);
3834 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
3835 facet->tags = ctx.tags;
3836 facet->may_install = ctx.may_set_up_flow;
3837 facet->has_learn = ctx.has_learn;
3838 facet->has_normal = ctx.has_normal;
3839 facet->nf_flow.output_iface = ctx.nf_output_iface;
3840 facet->mirrors = ctx.mirrors;
3842 if (subfacet->actions_len != odp_actions->size
3843 || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
3844 free(subfacet->actions);
3845 subfacet->actions_len = odp_actions->size;
3846 subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
3849 ofpbuf_delete(odp_actions);
3852 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
3853 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
3854 * in the datapath will be zeroed and 'stats' will be updated with traffic new
3855 * since 'subfacet' was last updated.
3857 * Returns 0 if successful, otherwise a positive errno value. */
3859 subfacet_install(struct subfacet *subfacet,
3860 const struct nlattr *actions, size_t actions_len,
3861 struct dpif_flow_stats *stats)
3863 struct facet *facet = subfacet->facet;
3864 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3865 struct odputil_keybuf keybuf;
3866 enum dpif_flow_put_flags flags;
3870 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
3872 flags |= DPIF_FP_ZERO_STATS;
3875 subfacet_get_key(subfacet, &keybuf, &key);
3876 ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
3877 actions, actions_len, stats);
3880 subfacet_reset_dp_stats(subfacet, stats);
3886 /* If 'subfacet' is installed in the datapath, uninstalls it. */
3888 subfacet_uninstall(struct subfacet *subfacet)
3890 if (subfacet->installed) {
3891 struct rule_dpif *rule = subfacet->facet->rule;
3892 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3893 struct odputil_keybuf keybuf;
3894 struct dpif_flow_stats stats;
3898 subfacet_get_key(subfacet, &keybuf, &key);
3899 error = dpif_flow_del(ofproto->dpif, key.data, key.size, &stats);
3900 subfacet_reset_dp_stats(subfacet, &stats);
3902 subfacet_update_stats(subfacet, &stats);
3904 subfacet->installed = false;
3906 assert(subfacet->dp_packet_count == 0);
3907 assert(subfacet->dp_byte_count == 0);
3911 /* Resets 'subfacet''s datapath statistics counters. This should be called
3912 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
3913 * non-null, it should contain the statistics returned by dpif when 'subfacet'
3914 * was reset in the datapath. 'stats' will be modified to include only
3915 * statistics new since 'subfacet' was last updated. */
3917 subfacet_reset_dp_stats(struct subfacet *subfacet,
3918 struct dpif_flow_stats *stats)
3921 && subfacet->dp_packet_count <= stats->n_packets
3922 && subfacet->dp_byte_count <= stats->n_bytes) {
3923 stats->n_packets -= subfacet->dp_packet_count;
3924 stats->n_bytes -= subfacet->dp_byte_count;
3927 subfacet->dp_packet_count = 0;
3928 subfacet->dp_byte_count = 0;
3931 /* Updates 'subfacet''s used time. The caller is responsible for calling
3932 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
3934 subfacet_update_time(struct subfacet *subfacet, long long int used)
3936 if (used > subfacet->used) {
3937 subfacet->used = used;
3938 facet_update_time(subfacet->facet, used);
3942 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
3944 * Because of the meaning of a subfacet's counters, it only makes sense to do
3945 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
3946 * represents a packet that was sent by hand or if it represents statistics
3947 * that have been cleared out of the datapath. */
3949 subfacet_update_stats(struct subfacet *subfacet,
3950 const struct dpif_flow_stats *stats)
3952 if (stats->n_packets || stats->used > subfacet->used) {
3953 struct facet *facet = subfacet->facet;
3955 subfacet_update_time(subfacet, stats->used);
3956 facet->packet_count += stats->n_packets;
3957 facet->byte_count += stats->n_bytes;
3958 facet_push_stats(facet);
3959 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
3965 static struct rule_dpif *
3966 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
3969 struct cls_rule *cls_rule;
3970 struct classifier *cls;
3972 if (table_id >= N_TABLES) {
3976 cls = &ofproto->up.tables[table_id];
3977 if (flow->nw_frag & FLOW_NW_FRAG_ANY
3978 && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
3979 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
3980 * are unavailable. */
3981 struct flow ofpc_normal_flow = *flow;
3982 ofpc_normal_flow.tp_src = htons(0);
3983 ofpc_normal_flow.tp_dst = htons(0);
3984 cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
3986 cls_rule = classifier_lookup(cls, flow);
3988 return rule_dpif_cast(rule_from_cls_rule(cls_rule));
3992 complete_operation(struct rule_dpif *rule)
3994 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3996 rule_invalidate(rule);
3998 struct dpif_completion *c = xmalloc(sizeof *c);
3999 c->op = rule->up.pending;
4000 list_push_back(&ofproto->completions, &c->list_node);
4002 ofoperation_complete(rule->up.pending, 0);
4006 static struct rule *
4009 struct rule_dpif *rule = xmalloc(sizeof *rule);
4014 rule_dealloc(struct rule *rule_)
4016 struct rule_dpif *rule = rule_dpif_cast(rule_);
4021 rule_construct(struct rule *rule_)
4023 struct rule_dpif *rule = rule_dpif_cast(rule_);
4024 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4025 struct rule_dpif *victim;
4029 error = validate_actions(rule->up.actions, rule->up.n_actions,
4030 &rule->up.cr.flow, ofproto->max_ports);
4035 rule->used = rule->up.created;
4036 rule->packet_count = 0;
4037 rule->byte_count = 0;
4039 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
4040 if (victim && !list_is_empty(&victim->facets)) {
4041 struct facet *facet;
4043 rule->facets = victim->facets;
4044 list_moved(&rule->facets);
4045 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4046 /* XXX: We're only clearing our local counters here. It's possible
4047 * that quite a few packets are unaccounted for in the datapath
4048 * statistics. These will be accounted to the new rule instead of
4049 * cleared as required. This could be fixed by clearing out the
4050 * datapath statistics for this facet, but currently it doesn't
4052 facet_reset_counters(facet);
4056 /* Must avoid list_moved() in this case. */
4057 list_init(&rule->facets);
4060 table_id = rule->up.table_id;
4061 rule->tag = (victim ? victim->tag
4063 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
4064 ofproto->tables[table_id].basis));
4066 complete_operation(rule);
4071 rule_destruct(struct rule *rule_)
4073 struct rule_dpif *rule = rule_dpif_cast(rule_);
4074 struct facet *facet, *next_facet;
4076 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
4077 facet_revalidate(facet);
4080 complete_operation(rule);
4084 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4086 struct rule_dpif *rule = rule_dpif_cast(rule_);
4087 struct facet *facet;
4089 /* Start from historical data for 'rule' itself that are no longer tracked
4090 * in facets. This counts, for example, facets that have expired. */
4091 *packets = rule->packet_count;
4092 *bytes = rule->byte_count;
4094 /* Add any statistics that are tracked by facets. This includes
4095 * statistical data recently updated by ofproto_update_stats() as well as
4096 * stats for packets that were executed "by hand" via dpif_execute(). */
4097 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4098 *packets += facet->packet_count;
4099 *bytes += facet->byte_count;
4104 rule_execute(struct rule *rule_, const struct flow *flow,
4105 struct ofpbuf *packet)
4107 struct rule_dpif *rule = rule_dpif_cast(rule_);
4108 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4109 struct action_xlate_ctx ctx;
4110 struct ofpbuf *odp_actions;
4113 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
4114 rule->up.flow_cookie, packet);
4115 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
4116 size = packet->size;
4117 if (execute_odp_actions(ofproto, flow, odp_actions->data,
4118 odp_actions->size, packet)) {
4119 rule->used = time_msec();
4120 rule->packet_count++;
4121 rule->byte_count += size;
4122 flow_push_stats(rule, flow, 1, size, rule->used);
4124 ofpbuf_delete(odp_actions);
4130 rule_modify_actions(struct rule *rule_)
4132 struct rule_dpif *rule = rule_dpif_cast(rule_);
4133 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4136 error = validate_actions(rule->up.actions, rule->up.n_actions,
4137 &rule->up.cr.flow, ofproto->max_ports);
4139 ofoperation_complete(rule->up.pending, error);
4143 complete_operation(rule);
4146 /* Sends 'packet' out 'ofport'.
4147 * May modify 'packet'.
4148 * Returns 0 if successful, otherwise a positive errno value. */
4150 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4152 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4153 struct ofpbuf key, odp_actions;
4154 struct odputil_keybuf keybuf;
4159 flow_extract((struct ofpbuf *) packet, 0, 0, 0, &flow);
4160 odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
4162 if (odp_port != ofport->odp_port) {
4163 eth_pop_vlan(packet);
4164 flow.vlan_tci = htons(0);
4167 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4168 odp_flow_key_from_flow(&key, &flow);
4170 ofpbuf_init(&odp_actions, 32);
4171 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
4173 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
4174 error = dpif_execute(ofproto->dpif,
4176 odp_actions.data, odp_actions.size,
4178 ofpbuf_uninit(&odp_actions);
4181 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
4182 ofproto->up.name, odp_port, strerror(error));
4184 ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0);
4188 /* OpenFlow to datapath action translation. */
4190 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
4191 struct action_xlate_ctx *ctx);
4192 static void xlate_normal(struct action_xlate_ctx *);
4195 put_userspace_action(const struct ofproto_dpif *ofproto,
4196 struct ofpbuf *odp_actions,
4197 const struct flow *flow,
4198 const struct user_action_cookie *cookie)
4202 pid = dpif_port_get_pid(ofproto->dpif,
4203 ofp_port_to_odp_port(flow->in_port));
4205 return odp_put_userspace_action(pid, cookie, odp_actions);
4208 /* Compose SAMPLE action for sFlow. */
4210 compose_sflow_action(const struct ofproto_dpif *ofproto,
4211 struct ofpbuf *odp_actions,
4212 const struct flow *flow,
4215 uint32_t port_ifindex;
4216 uint32_t probability;
4217 struct user_action_cookie cookie;
4218 size_t sample_offset, actions_offset;
4219 int cookie_offset, n_output;
4221 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
4225 if (odp_port == OVSP_NONE) {
4229 port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
4233 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
4235 /* Number of packets out of UINT_MAX to sample. */
4236 probability = dpif_sflow_get_probability(ofproto->sflow);
4237 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
4239 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
4241 cookie.type = USER_ACTION_COOKIE_SFLOW;
4242 cookie.data = port_ifindex;
4243 cookie.n_output = n_output;
4244 cookie.vlan_tci = 0;
4245 cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
4247 nl_msg_end_nested(odp_actions, actions_offset);
4248 nl_msg_end_nested(odp_actions, sample_offset);
4249 return cookie_offset;
4252 /* SAMPLE action must be first action in any given list of actions.
4253 * At this point we do not have all information required to build it. So try to
4254 * build sample action as complete as possible. */
4256 add_sflow_action(struct action_xlate_ctx *ctx)
4258 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
4260 &ctx->flow, OVSP_NONE);
4261 ctx->sflow_odp_port = 0;
4262 ctx->sflow_n_outputs = 0;
4265 /* Fix SAMPLE action according to data collected while composing ODP actions.
4266 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
4267 * USERSPACE action's user-cookie which is required for sflow. */
4269 fix_sflow_action(struct action_xlate_ctx *ctx)
4271 const struct flow *base = &ctx->base_flow;
4272 struct user_action_cookie *cookie;
4274 if (!ctx->user_cookie_offset) {
4278 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
4280 assert(cookie != NULL);
4281 assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
4283 if (ctx->sflow_n_outputs) {
4284 cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
4285 ctx->sflow_odp_port);
4287 if (ctx->sflow_n_outputs >= 255) {
4288 cookie->n_output = 255;
4290 cookie->n_output = ctx->sflow_n_outputs;
4292 cookie->vlan_tci = base->vlan_tci;
4296 compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
4299 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
4300 uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
4301 ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
4302 uint8_t flow_nw_tos = ctx->flow.nw_tos;
4306 struct priority_to_dscp *pdscp;
4308 if (ofport->up.opp.config & htonl(OFPPC_NO_FWD)
4309 || (check_stp && !stp_forward_in_state(ofport->stp_state))) {
4313 pdscp = get_priority(ofport, ctx->flow.skb_priority);
4315 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4316 ctx->flow.nw_tos |= pdscp->dscp;
4319 /* We may not have an ofport record for this port, but it doesn't hurt
4320 * to allow forwarding to it anyhow. Maybe such a port will appear
4321 * later and we're pre-populating the flow table. */
4324 out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
4325 ctx->flow.vlan_tci);
4326 if (out_port != odp_port) {
4327 ctx->flow.vlan_tci = htons(0);
4329 commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
4330 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
4332 ctx->sflow_odp_port = odp_port;
4333 ctx->sflow_n_outputs++;
4334 ctx->nf_output_iface = ofp_port;
4335 ctx->flow.vlan_tci = flow_vlan_tci;
4336 ctx->flow.nw_tos = flow_nw_tos;
4340 compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
4342 compose_output_action__(ctx, ofp_port, true);
4346 xlate_table_action(struct action_xlate_ctx *ctx,
4347 uint16_t in_port, uint8_t table_id)
4349 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
4350 struct ofproto_dpif *ofproto = ctx->ofproto;
4351 struct rule_dpif *rule;
4352 uint16_t old_in_port;
4353 uint8_t old_table_id;
4355 old_table_id = ctx->table_id;
4356 ctx->table_id = table_id;
4358 /* Look up a flow with 'in_port' as the input port. */
4359 old_in_port = ctx->flow.in_port;
4360 ctx->flow.in_port = in_port;
4361 rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
4364 if (table_id > 0 && table_id < N_TABLES) {
4365 struct table_dpif *table = &ofproto->tables[table_id];
4366 if (table->other_table) {
4369 : rule_calculate_tag(&ctx->flow,
4370 &table->other_table->wc,
4375 /* Restore the original input port. Otherwise OFPP_NORMAL and
4376 * OFPP_IN_PORT will have surprising behavior. */
4377 ctx->flow.in_port = old_in_port;
4379 if (ctx->resubmit_hook) {
4380 ctx->resubmit_hook(ctx, rule);
4384 ovs_be64 old_cookie = ctx->cookie;
4387 ctx->cookie = rule->up.flow_cookie;
4388 do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
4389 ctx->cookie = old_cookie;
4393 ctx->table_id = old_table_id;
4395 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
4397 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
4398 MAX_RESUBMIT_RECURSION);
4403 xlate_resubmit_table(struct action_xlate_ctx *ctx,
4404 const struct nx_action_resubmit *nar)
4409 in_port = (nar->in_port == htons(OFPP_IN_PORT)
4411 : ntohs(nar->in_port));
4412 table_id = nar->table == 255 ? ctx->table_id : nar->table;
4414 xlate_table_action(ctx, in_port, table_id);
4418 flood_packets(struct action_xlate_ctx *ctx, bool all)
4420 struct ofport_dpif *ofport;
4422 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
4423 uint16_t ofp_port = ofport->up.ofp_port;
4425 if (ofp_port == ctx->flow.in_port) {
4430 compose_output_action__(ctx, ofp_port, false);
4431 } else if (!(ofport->up.opp.config & htonl(OFPPC_NO_FLOOD))) {
4432 compose_output_action(ctx, ofp_port);
4436 ctx->nf_output_iface = NF_OUT_FLOOD;
4440 execute_controller_action(struct action_xlate_ctx *ctx, int len,
4441 enum ofp_packet_in_reason reason)
4443 struct ofputil_packet_in pin;
4444 struct ofpbuf *packet;
4446 ctx->may_set_up_flow = false;
4451 packet = ofpbuf_clone(ctx->packet);
4453 if (packet->l2 && packet->l3) {
4454 struct eth_header *eh;
4456 eth_pop_vlan(packet);
4458 assert(eh->eth_type == ctx->flow.dl_type);
4459 memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
4460 memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
4462 if (ctx->flow.vlan_tci & htons(VLAN_CFI)) {
4463 eth_push_vlan(packet, ctx->flow.vlan_tci);
4467 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4468 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
4469 ctx->flow.nw_tos, ctx->flow.nw_ttl);
4473 if (ctx->flow.nw_proto == IPPROTO_TCP) {
4474 packet_set_tcp_port(packet, ctx->flow.tp_src,
4476 } else if (ctx->flow.nw_proto == IPPROTO_UDP) {
4477 packet_set_udp_port(packet, ctx->flow.tp_src,
4484 pin.packet = packet->data;
4485 pin.packet_len = packet->size;
4486 pin.reason = reason;
4487 pin.table_id = ctx->table_id;
4488 pin.cookie = ctx->cookie;
4492 pin.total_len = packet->size;
4493 flow_get_metadata(&ctx->flow, &pin.fmd);
4495 connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin, &ctx->flow);
4496 ofpbuf_delete(packet);
4500 compose_dec_ttl(struct action_xlate_ctx *ctx)
4502 if (ctx->flow.dl_type != htons(ETH_TYPE_IP) &&
4503 ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) {
4507 if (ctx->flow.nw_ttl > 1) {
4511 execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL);
4513 /* Stop processing for current table. */
4519 xlate_output_action__(struct action_xlate_ctx *ctx,
4520 uint16_t port, uint16_t max_len)
4522 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
4524 ctx->nf_output_iface = NF_OUT_DROP;
4528 compose_output_action(ctx, ctx->flow.in_port);
4531 xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id);
4537 flood_packets(ctx, false);
4540 flood_packets(ctx, true);
4542 case OFPP_CONTROLLER:
4543 execute_controller_action(ctx, max_len, OFPR_ACTION);
4546 compose_output_action(ctx, OFPP_LOCAL);
4551 if (port != ctx->flow.in_port) {
4552 compose_output_action(ctx, port);
4557 if (prev_nf_output_iface == NF_OUT_FLOOD) {
4558 ctx->nf_output_iface = NF_OUT_FLOOD;
4559 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
4560 ctx->nf_output_iface = prev_nf_output_iface;
4561 } else if (prev_nf_output_iface != NF_OUT_DROP &&
4562 ctx->nf_output_iface != NF_OUT_FLOOD) {
4563 ctx->nf_output_iface = NF_OUT_MULTI;
4568 xlate_output_reg_action(struct action_xlate_ctx *ctx,
4569 const struct nx_action_output_reg *naor)
4573 ofp_port = nxm_read_field_bits(naor->src, naor->ofs_nbits, &ctx->flow);
4575 if (ofp_port <= UINT16_MAX) {
4576 xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
4581 xlate_output_action(struct action_xlate_ctx *ctx,
4582 const struct ofp_action_output *oao)
4584 xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
4588 xlate_enqueue_action(struct action_xlate_ctx *ctx,
4589 const struct ofp_action_enqueue *oae)
4592 uint32_t flow_priority, priority;
4595 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
4598 /* Fall back to ordinary output action. */
4599 xlate_output_action__(ctx, ntohs(oae->port), 0);
4603 /* Figure out datapath output port. */
4604 ofp_port = ntohs(oae->port);
4605 if (ofp_port == OFPP_IN_PORT) {
4606 ofp_port = ctx->flow.in_port;
4607 } else if (ofp_port == ctx->flow.in_port) {
4611 /* Add datapath actions. */
4612 flow_priority = ctx->flow.skb_priority;
4613 ctx->flow.skb_priority = priority;
4614 compose_output_action(ctx, ofp_port);
4615 ctx->flow.skb_priority = flow_priority;
4617 /* Update NetFlow output port. */
4618 if (ctx->nf_output_iface == NF_OUT_DROP) {
4619 ctx->nf_output_iface = ofp_port;
4620 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
4621 ctx->nf_output_iface = NF_OUT_MULTI;
4626 xlate_set_queue_action(struct action_xlate_ctx *ctx,
4627 const struct nx_action_set_queue *nasq)
4632 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
4635 /* Couldn't translate queue to a priority, so ignore. A warning
4636 * has already been logged. */
4640 ctx->flow.skb_priority = priority;
4643 struct xlate_reg_state {
4649 xlate_autopath(struct action_xlate_ctx *ctx,
4650 const struct nx_action_autopath *naa)
4652 uint16_t ofp_port = ntohl(naa->id);
4653 struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
4655 if (!port || !port->bundle) {
4656 ofp_port = OFPP_NONE;
4657 } else if (port->bundle->bond) {
4658 /* Autopath does not support VLAN hashing. */
4659 struct ofport_dpif *slave = bond_choose_output_slave(
4660 port->bundle->bond, &ctx->flow, 0, &ctx->tags);
4662 ofp_port = slave->up.ofp_port;
4665 autopath_execute(naa, &ctx->flow, ofp_port);
4669 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
4671 struct ofproto_dpif *ofproto = ofproto_;
4672 struct ofport_dpif *port;
4682 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
4685 port = get_ofp_port(ofproto, ofp_port);
4686 return port ? port->may_enable : false;
4691 xlate_learn_action(struct action_xlate_ctx *ctx,
4692 const struct nx_action_learn *learn)
4694 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
4695 struct ofputil_flow_mod fm;
4698 learn_execute(learn, &ctx->flow, &fm);
4700 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
4701 if (error && !VLOG_DROP_WARN(&rl)) {
4702 VLOG_WARN("learning action failed to modify flow table (%s)",
4703 ofperr_get_name(error));
4710 may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
4712 if (port->up.opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
4713 ? htonl(OFPPC_NO_RECV_STP)
4714 : htonl(OFPPC_NO_RECV))) {
4718 /* Only drop packets here if both forwarding and learning are
4719 * disabled. If just learning is enabled, we need to have
4720 * OFPP_NORMAL and the learning action have a look at the packet
4721 * before we can drop it. */
4722 if (!stp_forward_in_state(port->stp_state)
4723 && !stp_learn_in_state(port->stp_state)) {
4731 do_xlate_actions(const union ofp_action *in, size_t n_in,
4732 struct action_xlate_ctx *ctx)
4734 const struct ofport_dpif *port;
4735 const union ofp_action *ia;
4738 port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
4739 if (port && !may_receive(port, ctx)) {
4740 /* Drop this flow. */
4744 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
4745 const struct ofp_action_dl_addr *oada;
4746 const struct nx_action_resubmit *nar;
4747 const struct nx_action_set_tunnel *nast;
4748 const struct nx_action_set_queue *nasq;
4749 const struct nx_action_multipath *nam;
4750 const struct nx_action_autopath *naa;
4751 const struct nx_action_bundle *nab;
4752 const struct nx_action_output_reg *naor;
4753 enum ofputil_action_code code;
4760 code = ofputil_decode_action_unsafe(ia);
4762 case OFPUTIL_OFPAT_OUTPUT:
4763 xlate_output_action(ctx, &ia->output);
4766 case OFPUTIL_OFPAT_SET_VLAN_VID:
4767 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
4768 ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
4771 case OFPUTIL_OFPAT_SET_VLAN_PCP:
4772 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
4773 ctx->flow.vlan_tci |= htons(
4774 (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
4777 case OFPUTIL_OFPAT_STRIP_VLAN:
4778 ctx->flow.vlan_tci = htons(0);
4781 case OFPUTIL_OFPAT_SET_DL_SRC:
4782 oada = ((struct ofp_action_dl_addr *) ia);
4783 memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
4786 case OFPUTIL_OFPAT_SET_DL_DST:
4787 oada = ((struct ofp_action_dl_addr *) ia);
4788 memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
4791 case OFPUTIL_OFPAT_SET_NW_SRC:
4792 ctx->flow.nw_src = ia->nw_addr.nw_addr;
4795 case OFPUTIL_OFPAT_SET_NW_DST:
4796 ctx->flow.nw_dst = ia->nw_addr.nw_addr;
4799 case OFPUTIL_OFPAT_SET_NW_TOS:
4800 /* OpenFlow 1.0 only supports IPv4. */
4801 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4802 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4803 ctx->flow.nw_tos |= ia->nw_tos.nw_tos & IP_DSCP_MASK;
4807 case OFPUTIL_OFPAT_SET_TP_SRC:
4808 ctx->flow.tp_src = ia->tp_port.tp_port;
4811 case OFPUTIL_OFPAT_SET_TP_DST:
4812 ctx->flow.tp_dst = ia->tp_port.tp_port;
4815 case OFPUTIL_OFPAT_ENQUEUE:
4816 xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
4819 case OFPUTIL_NXAST_RESUBMIT:
4820 nar = (const struct nx_action_resubmit *) ia;
4821 xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
4824 case OFPUTIL_NXAST_RESUBMIT_TABLE:
4825 xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
4828 case OFPUTIL_NXAST_SET_TUNNEL:
4829 nast = (const struct nx_action_set_tunnel *) ia;
4830 tun_id = htonll(ntohl(nast->tun_id));
4831 ctx->flow.tun_id = tun_id;
4834 case OFPUTIL_NXAST_SET_QUEUE:
4835 nasq = (const struct nx_action_set_queue *) ia;
4836 xlate_set_queue_action(ctx, nasq);
4839 case OFPUTIL_NXAST_POP_QUEUE:
4840 ctx->flow.skb_priority = ctx->orig_skb_priority;
4843 case OFPUTIL_NXAST_REG_MOVE:
4844 nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
4848 case OFPUTIL_NXAST_REG_LOAD:
4849 nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
4853 case OFPUTIL_NXAST_NOTE:
4854 /* Nothing to do. */
4857 case OFPUTIL_NXAST_SET_TUNNEL64:
4858 tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
4859 ctx->flow.tun_id = tun_id;
4862 case OFPUTIL_NXAST_MULTIPATH:
4863 nam = (const struct nx_action_multipath *) ia;
4864 multipath_execute(nam, &ctx->flow);
4867 case OFPUTIL_NXAST_AUTOPATH:
4868 naa = (const struct nx_action_autopath *) ia;
4869 xlate_autopath(ctx, naa);
4872 case OFPUTIL_NXAST_BUNDLE:
4873 ctx->ofproto->has_bundle_action = true;
4874 nab = (const struct nx_action_bundle *) ia;
4875 xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
4880 case OFPUTIL_NXAST_BUNDLE_LOAD:
4881 ctx->ofproto->has_bundle_action = true;
4882 nab = (const struct nx_action_bundle *) ia;
4883 bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
4887 case OFPUTIL_NXAST_OUTPUT_REG:
4888 naor = (const struct nx_action_output_reg *) ia;
4889 xlate_output_reg_action(ctx, naor);
4892 case OFPUTIL_NXAST_LEARN:
4893 ctx->has_learn = true;
4894 if (ctx->may_learn) {
4895 xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
4899 case OFPUTIL_NXAST_DEC_TTL:
4900 if (compose_dec_ttl(ctx)) {
4905 case OFPUTIL_NXAST_EXIT:
4912 /* We've let OFPP_NORMAL and the learning action look at the packet,
4913 * so drop it now if forwarding is disabled. */
4914 if (port && !stp_forward_in_state(port->stp_state)) {
4915 ofpbuf_clear(ctx->odp_actions);
4916 add_sflow_action(ctx);
4921 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
4922 struct ofproto_dpif *ofproto, const struct flow *flow,
4923 ovs_be16 initial_tci, ovs_be64 cookie,
4924 const struct ofpbuf *packet)
4926 ctx->ofproto = ofproto;
4928 ctx->base_flow = ctx->flow;
4929 ctx->base_flow.tun_id = 0;
4930 ctx->base_flow.vlan_tci = initial_tci;
4931 ctx->cookie = cookie;
4932 ctx->packet = packet;
4933 ctx->may_learn = packet != NULL;
4934 ctx->resubmit_hook = NULL;
4937 static struct ofpbuf *
4938 xlate_actions(struct action_xlate_ctx *ctx,
4939 const union ofp_action *in, size_t n_in)
4941 struct flow orig_flow = ctx->flow;
4943 COVERAGE_INC(ofproto_dpif_xlate);
4945 ctx->odp_actions = ofpbuf_new(512);
4946 ofpbuf_reserve(ctx->odp_actions, NL_A_U32_SIZE);
4948 ctx->may_set_up_flow = true;
4949 ctx->has_learn = false;
4950 ctx->has_normal = false;
4951 ctx->nf_output_iface = NF_OUT_DROP;
4954 ctx->orig_skb_priority = ctx->flow.skb_priority;
4958 if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
4959 switch (ctx->ofproto->up.frag_handling) {
4960 case OFPC_FRAG_NORMAL:
4961 /* We must pretend that transport ports are unavailable. */
4962 ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0);
4963 ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0);
4966 case OFPC_FRAG_DROP:
4967 return ctx->odp_actions;
4969 case OFPC_FRAG_REASM:
4972 case OFPC_FRAG_NX_MATCH:
4973 /* Nothing to do. */
4976 case OFPC_INVALID_TTL_TO_CONTROLLER:
4981 if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
4982 ctx->may_set_up_flow = false;
4983 return ctx->odp_actions;
4985 add_sflow_action(ctx);
4986 do_xlate_actions(in, n_in, ctx);
4988 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
4989 ctx->odp_actions->data,
4990 ctx->odp_actions->size)) {
4991 ctx->may_set_up_flow = false;
4993 && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
4995 compose_output_action(ctx, OFPP_LOCAL);
4998 add_mirror_actions(ctx, &orig_flow);
4999 fix_sflow_action(ctx);
5002 return ctx->odp_actions;
5005 /* OFPP_NORMAL implementation. */
5007 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
5009 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
5010 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
5011 * the bundle on which the packet was received, returns the VLAN to which the
5014 * Both 'vid' and the return value are in the range 0...4095. */
5016 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
5018 switch (in_bundle->vlan_mode) {
5019 case PORT_VLAN_ACCESS:
5020 return in_bundle->vlan;
5023 case PORT_VLAN_TRUNK:
5026 case PORT_VLAN_NATIVE_UNTAGGED:
5027 case PORT_VLAN_NATIVE_TAGGED:
5028 return vid ? vid : in_bundle->vlan;
5035 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
5036 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
5039 * 'vid' should be the VID obtained from the 802.1Q header that was received as
5040 * part of a packet (specify 0 if there was no 802.1Q header), in the range
5043 input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn)
5045 /* Allow any VID on the OFPP_NONE port. */
5046 if (in_bundle == &ofpp_none_bundle) {
5050 switch (in_bundle->vlan_mode) {
5051 case PORT_VLAN_ACCESS:
5054 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5055 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
5056 "packet received on port %s configured as VLAN "
5057 "%"PRIu16" access port",
5058 in_bundle->ofproto->up.name, vid,
5059 in_bundle->name, in_bundle->vlan);
5065 case PORT_VLAN_NATIVE_UNTAGGED:
5066 case PORT_VLAN_NATIVE_TAGGED:
5068 /* Port must always carry its native VLAN. */
5072 case PORT_VLAN_TRUNK:
5073 if (!ofbundle_includes_vlan(in_bundle, vid)) {
5075 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5076 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet "
5077 "received on port %s not configured for trunking "
5079 in_bundle->ofproto->up.name, vid,
5080 in_bundle->name, vid);
5092 /* Given 'vlan', the VLAN that a packet belongs to, and
5093 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
5094 * that should be included in the 802.1Q header. (If the return value is 0,
5095 * then the 802.1Q header should only be included in the packet if there is a
5098 * Both 'vlan' and the return value are in the range 0...4095. */
5100 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
5102 switch (out_bundle->vlan_mode) {
5103 case PORT_VLAN_ACCESS:
5106 case PORT_VLAN_TRUNK:
5107 case PORT_VLAN_NATIVE_TAGGED:
5110 case PORT_VLAN_NATIVE_UNTAGGED:
5111 return vlan == out_bundle->vlan ? 0 : vlan;
5119 output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle,
5122 struct ofport_dpif *port;
5124 ovs_be16 tci, old_tci;
5126 vid = output_vlan_to_vid(out_bundle, vlan);
5127 if (!out_bundle->bond) {
5128 port = ofbundle_get_a_port(out_bundle);
5130 port = bond_choose_output_slave(out_bundle->bond, &ctx->flow,
5133 /* No slaves enabled, so drop packet. */
5138 old_tci = ctx->flow.vlan_tci;
5140 if (tci || out_bundle->use_priority_tags) {
5141 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
5143 tci |= htons(VLAN_CFI);
5146 ctx->flow.vlan_tci = tci;
5148 compose_output_action(ctx, port->up.ofp_port);
5149 ctx->flow.vlan_tci = old_tci;
5153 mirror_mask_ffs(mirror_mask_t mask)
5155 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
5160 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
5162 return (bundle->vlan_mode != PORT_VLAN_ACCESS
5163 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
5167 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
5169 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
5172 /* Returns an arbitrary interface within 'bundle'. */
5173 static struct ofport_dpif *
5174 ofbundle_get_a_port(const struct ofbundle *bundle)
5176 return CONTAINER_OF(list_front(&bundle->ports),
5177 struct ofport_dpif, bundle_node);
5181 vlan_is_mirrored(const struct ofmirror *m, int vlan)
5183 return !m->vlans || bitmap_is_set(m->vlans, vlan);
5186 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
5187 * to a VLAN. In general most packets may be mirrored but we want to drop
5188 * protocols that may confuse switches. */
5190 eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
5192 /* If you change this function's behavior, please update corresponding
5193 * documentation in vswitch.xml at the same time. */
5194 if (dst[0] != 0x01) {
5195 /* All the currently banned MACs happen to start with 01 currently, so
5196 * this is a quick way to eliminate most of the good ones. */
5198 if (eth_addr_is_reserved(dst)) {
5199 /* Drop STP, IEEE pause frames, and other reserved protocols
5200 * (01-80-c2-00-00-0x). */
5204 if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
5206 if ((dst[3] & 0xfe) == 0xcc &&
5207 (dst[4] & 0xfe) == 0xcc &&
5208 (dst[5] & 0xfe) == 0xcc) {
5209 /* Drop the following protocols plus others following the same
5212 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
5213 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
5214 STP Uplink Fast (01-00-0c-cd-cd-cd) */
5218 if (!(dst[3] | dst[4] | dst[5])) {
5219 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
5228 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
5230 struct ofproto_dpif *ofproto = ctx->ofproto;
5231 mirror_mask_t mirrors;
5232 struct ofbundle *in_bundle;
5235 const struct nlattr *a;
5238 in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
5239 ctx->packet != NULL);
5243 mirrors = in_bundle->src_mirrors;
5245 /* Drop frames on bundles reserved for mirroring. */
5246 if (in_bundle->mirror_out) {
5247 if (ctx->packet != NULL) {
5248 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5249 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5250 "%s, which is reserved exclusively for mirroring",
5251 ctx->ofproto->up.name, in_bundle->name);
5257 vid = vlan_tci_to_vid(orig_flow->vlan_tci);
5258 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5261 vlan = input_vid_to_vlan(in_bundle, vid);
5263 /* Look at the output ports to check for destination selections. */
5265 NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data,
5266 ctx->odp_actions->size) {
5267 enum ovs_action_attr type = nl_attr_type(a);
5268 struct ofport_dpif *ofport;
5270 if (type != OVS_ACTION_ATTR_OUTPUT) {
5274 ofport = get_odp_port(ofproto, nl_attr_get_u32(a));
5275 if (ofport && ofport->bundle) {
5276 mirrors |= ofport->bundle->dst_mirrors;
5284 /* Restore the original packet before adding the mirror actions. */
5285 ctx->flow = *orig_flow;
5290 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5292 if (!vlan_is_mirrored(m, vlan)) {
5293 mirrors &= mirrors - 1;
5297 mirrors &= ~m->dup_mirrors;
5298 ctx->mirrors |= m->dup_mirrors;
5300 output_normal(ctx, m->out, vlan);
5301 } else if (eth_dst_may_rspan(orig_flow->dl_dst)
5302 && vlan != m->out_vlan) {
5303 struct ofbundle *bundle;
5305 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
5306 if (ofbundle_includes_vlan(bundle, m->out_vlan)
5307 && !bundle->mirror_out) {
5308 output_normal(ctx, bundle, m->out_vlan);
5316 update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
5317 uint64_t packets, uint64_t bytes)
5323 for (; mirrors; mirrors &= mirrors - 1) {
5326 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5329 /* In normal circumstances 'm' will not be NULL. However,
5330 * if mirrors are reconfigured, we can temporarily get out
5331 * of sync in facet_revalidate(). We could "correct" the
5332 * mirror list before reaching here, but doing that would
5333 * not properly account the traffic stats we've currently
5334 * accumulated for previous mirror configuration. */
5338 m->packet_count += packets;
5339 m->byte_count += bytes;
5343 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
5344 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
5345 * indicate this; newer upstream kernels use gratuitous ARP requests. */
5347 is_gratuitous_arp(const struct flow *flow)
5349 return (flow->dl_type == htons(ETH_TYPE_ARP)
5350 && eth_addr_is_broadcast(flow->dl_dst)
5351 && (flow->nw_proto == ARP_OP_REPLY
5352 || (flow->nw_proto == ARP_OP_REQUEST
5353 && flow->nw_src == flow->nw_dst)));
5357 update_learning_table(struct ofproto_dpif *ofproto,
5358 const struct flow *flow, int vlan,
5359 struct ofbundle *in_bundle)
5361 struct mac_entry *mac;
5363 /* Don't learn the OFPP_NONE port. */
5364 if (in_bundle == &ofpp_none_bundle) {
5368 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
5372 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
5373 if (is_gratuitous_arp(flow)) {
5374 /* We don't want to learn from gratuitous ARP packets that are
5375 * reflected back over bond slaves so we lock the learning table. */
5376 if (!in_bundle->bond) {
5377 mac_entry_set_grat_arp_lock(mac);
5378 } else if (mac_entry_is_grat_arp_locked(mac)) {
5383 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
5384 /* The log messages here could actually be useful in debugging,
5385 * so keep the rate limit relatively high. */
5386 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
5387 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
5388 "on port %s in VLAN %d",
5389 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
5390 in_bundle->name, vlan);
5392 mac->port.p = in_bundle;
5393 tag_set_add(&ofproto->revalidate_set,
5394 mac_learning_changed(ofproto->ml, mac));
5398 static struct ofbundle *
5399 lookup_input_bundle(struct ofproto_dpif *ofproto, uint16_t in_port, bool warn)
5401 struct ofport_dpif *ofport;
5403 /* Special-case OFPP_NONE, which a controller may use as the ingress
5404 * port for traffic that it is sourcing. */
5405 if (in_port == OFPP_NONE) {
5406 return &ofpp_none_bundle;
5409 /* Find the port and bundle for the received packet. */
5410 ofport = get_ofp_port(ofproto, in_port);
5411 if (ofport && ofport->bundle) {
5412 return ofport->bundle;
5415 /* Odd. A few possible reasons here:
5417 * - We deleted a port but there are still a few packets queued up
5420 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
5421 * we don't know about.
5423 * - The ofproto client didn't configure the port as part of a bundle.
5426 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5428 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
5429 "port %"PRIu16, ofproto->up.name, in_port);
5434 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
5435 * dropped. Returns true if they may be forwarded, false if they should be
5438 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
5439 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
5441 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
5442 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
5443 * checked by input_vid_is_valid().
5445 * May also add tags to '*tags', although the current implementation only does
5446 * so in one special case.
5449 is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
5450 struct ofport_dpif *in_port, uint16_t vlan, tag_type *tags)
5452 struct ofbundle *in_bundle = in_port->bundle;
5454 /* Drop frames for reserved multicast addresses
5455 * only if forward_bpdu option is absent. */
5456 if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
5460 if (in_bundle->bond) {
5461 struct mac_entry *mac;
5463 switch (bond_check_admissibility(in_bundle->bond, in_port,
5464 flow->dl_dst, tags)) {
5471 case BV_DROP_IF_MOVED:
5472 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
5473 if (mac && mac->port.p != in_bundle &&
5474 (!is_gratuitous_arp(flow)
5475 || mac_entry_is_grat_arp_locked(mac))) {
5486 xlate_normal(struct action_xlate_ctx *ctx)
5488 struct ofport_dpif *in_port;
5489 struct ofbundle *in_bundle;
5490 struct mac_entry *mac;
5494 ctx->has_normal = true;
5496 in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
5497 ctx->packet != NULL);
5502 /* We know 'in_port' exists unless it is "ofpp_none_bundle",
5503 * since lookup_input_bundle() succeeded. */
5504 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
5506 /* Drop malformed frames. */
5507 if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
5508 !(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
5509 if (ctx->packet != NULL) {
5510 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5511 VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial "
5512 "VLAN tag received on port %s",
5513 ctx->ofproto->up.name, in_bundle->name);
5518 /* Drop frames on bundles reserved for mirroring. */
5519 if (in_bundle->mirror_out) {
5520 if (ctx->packet != NULL) {
5521 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5522 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5523 "%s, which is reserved exclusively for mirroring",
5524 ctx->ofproto->up.name, in_bundle->name);
5530 vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
5531 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5534 vlan = input_vid_to_vlan(in_bundle, vid);
5536 /* Check other admissibility requirements. */
5538 !is_admissible(ctx->ofproto, &ctx->flow, in_port, vlan, &ctx->tags)) {
5542 /* Learn source MAC. */
5543 if (ctx->may_learn) {
5544 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
5547 /* Determine output bundle. */
5548 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
5551 if (mac->port.p != in_bundle) {
5552 output_normal(ctx, mac->port.p, vlan);
5555 struct ofbundle *bundle;
5557 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
5558 if (bundle != in_bundle
5559 && ofbundle_includes_vlan(bundle, vlan)
5560 && bundle->floodable
5561 && !bundle->mirror_out) {
5562 output_normal(ctx, bundle, vlan);
5565 ctx->nf_output_iface = NF_OUT_FLOOD;
5569 /* Optimized flow revalidation.
5571 * It's a difficult problem, in general, to tell which facets need to have
5572 * their actions recalculated whenever the OpenFlow flow table changes. We
5573 * don't try to solve that general problem: for most kinds of OpenFlow flow
5574 * table changes, we recalculate the actions for every facet. This is
5575 * relatively expensive, but it's good enough if the OpenFlow flow table
5576 * doesn't change very often.
5578 * However, we can expect one particular kind of OpenFlow flow table change to
5579 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
5580 * of CPU on revalidating every facet whenever MAC learning modifies the flow
5581 * table, we add a special case that applies to flow tables in which every rule
5582 * has the same form (that is, the same wildcards), except that the table is
5583 * also allowed to have a single "catch-all" flow that matches all packets. We
5584 * optimize this case by tagging all of the facets that resubmit into the table
5585 * and invalidating the same tag whenever a flow changes in that table. The
5586 * end result is that we revalidate just the facets that need it (and sometimes
5587 * a few more, but not all of the facets or even all of the facets that
5588 * resubmit to the table modified by MAC learning). */
5590 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
5591 * into an OpenFlow table with the given 'basis'. */
5593 rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
5596 if (flow_wildcards_is_catchall(wc)) {
5599 struct flow tag_flow = *flow;
5600 flow_zero_wildcards(&tag_flow, wc);
5601 return tag_create_deterministic(flow_hash(&tag_flow, secret));
5605 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
5606 * taggability of that table.
5608 * This function must be called after *each* change to a flow table. If you
5609 * skip calling it on some changes then the pointer comparisons at the end can
5610 * be invalid if you get unlucky. For example, if a flow removal causes a
5611 * cls_table to be destroyed and then a flow insertion causes a cls_table with
5612 * different wildcards to be created with the same address, then this function
5613 * will incorrectly skip revalidation. */
5615 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
5617 struct table_dpif *table = &ofproto->tables[table_id];
5618 const struct classifier *cls = &ofproto->up.tables[table_id];
5619 struct cls_table *catchall, *other;
5620 struct cls_table *t;
5622 catchall = other = NULL;
5624 switch (hmap_count(&cls->tables)) {
5626 /* We could tag this OpenFlow table but it would make the logic a
5627 * little harder and it's a corner case that doesn't seem worth it
5633 HMAP_FOR_EACH (t, hmap_node, &cls->tables) {
5634 if (cls_table_is_catchall(t)) {
5636 } else if (!other) {
5639 /* Indicate that we can't tag this by setting both tables to
5640 * NULL. (We know that 'catchall' is already NULL.) */
5647 /* Can't tag this table. */
5651 if (table->catchall_table != catchall || table->other_table != other) {
5652 table->catchall_table = catchall;
5653 table->other_table = other;
5654 ofproto->need_revalidate = true;
5658 /* Given 'rule' that has changed in some way (either it is a rule being
5659 * inserted, a rule being deleted, or a rule whose actions are being
5660 * modified), marks facets for revalidation to ensure that packets will be
5661 * forwarded correctly according to the new state of the flow table.
5663 * This function must be called after *each* change to a flow table. See
5664 * the comment on table_update_taggable() for more information. */
5666 rule_invalidate(const struct rule_dpif *rule)
5668 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5670 table_update_taggable(ofproto, rule->up.table_id);
5672 if (!ofproto->need_revalidate) {
5673 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
5675 if (table->other_table && rule->tag) {
5676 tag_set_add(&ofproto->revalidate_set, rule->tag);
5678 ofproto->need_revalidate = true;
5684 set_frag_handling(struct ofproto *ofproto_,
5685 enum ofp_config_flags frag_handling)
5687 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5689 if (frag_handling != OFPC_FRAG_REASM) {
5690 ofproto->need_revalidate = true;
5698 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5699 const struct flow *flow,
5700 const union ofp_action *ofp_actions, size_t n_ofp_actions)
5702 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5705 if (flow->in_port >= ofproto->max_ports && flow->in_port < OFPP_MAX) {
5706 return OFPERR_NXBRC_BAD_IN_PORT;
5709 error = validate_actions(ofp_actions, n_ofp_actions, flow,
5710 ofproto->max_ports);
5712 struct odputil_keybuf keybuf;
5713 struct ofpbuf *odp_actions;
5714 struct ofproto_push push;
5717 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5718 odp_flow_key_from_flow(&key, flow);
5720 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, 0,
5723 /* Ensure that resubmits in 'ofp_actions' get accounted to their
5724 * matching rules. */
5726 push.bytes = packet->size;
5727 push.used = time_msec();
5728 push.ctx.resubmit_hook = push_resubmit;
5730 odp_actions = xlate_actions(&push.ctx, ofp_actions, n_ofp_actions);
5731 dpif_execute(ofproto->dpif, key.data, key.size,
5732 odp_actions->data, odp_actions->size, packet);
5733 ofpbuf_delete(odp_actions);
5741 set_netflow(struct ofproto *ofproto_,
5742 const struct netflow_options *netflow_options)
5744 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5746 if (netflow_options) {
5747 if (!ofproto->netflow) {
5748 ofproto->netflow = netflow_create();
5750 return netflow_set_options(ofproto->netflow, netflow_options);
5752 netflow_destroy(ofproto->netflow);
5753 ofproto->netflow = NULL;
5759 get_netflow_ids(const struct ofproto *ofproto_,
5760 uint8_t *engine_type, uint8_t *engine_id)
5762 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5764 dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
5768 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5770 if (!facet_is_controller_flow(facet) &&
5771 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5772 struct subfacet *subfacet;
5773 struct ofexpired expired;
5775 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5776 if (subfacet->installed) {
5777 struct dpif_flow_stats stats;
5779 subfacet_install(subfacet, subfacet->actions,
5780 subfacet->actions_len, &stats);
5781 subfacet_update_stats(subfacet, &stats);
5785 expired.flow = facet->flow;
5786 expired.packet_count = facet->packet_count;
5787 expired.byte_count = facet->byte_count;
5788 expired.used = facet->used;
5789 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5794 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5796 struct facet *facet;
5798 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
5799 send_active_timeout(ofproto, facet);
5803 static struct ofproto_dpif *
5804 ofproto_dpif_lookup(const char *name)
5806 struct ofproto_dpif *ofproto;
5808 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5809 hash_string(name, 0), &all_ofproto_dpifs) {
5810 if (!strcmp(ofproto->up.name, name)) {
5818 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5819 const char *argv[], void *aux OVS_UNUSED)
5821 struct ofproto_dpif *ofproto;
5824 ofproto = ofproto_dpif_lookup(argv[1]);
5826 unixctl_command_reply(conn, 501, "no such bridge");
5829 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5831 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5832 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5836 unixctl_command_reply(conn, 200, "table successfully flushed");
5840 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5841 const char *argv[], void *aux OVS_UNUSED)
5843 struct ds ds = DS_EMPTY_INITIALIZER;
5844 const struct ofproto_dpif *ofproto;
5845 const struct mac_entry *e;
5847 ofproto = ofproto_dpif_lookup(argv[1]);
5849 unixctl_command_reply(conn, 501, "no such bridge");
5853 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5854 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5855 struct ofbundle *bundle = e->port.p;
5856 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
5857 ofbundle_get_a_port(bundle)->odp_port,
5858 e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
5860 unixctl_command_reply(conn, 200, ds_cstr(&ds));
5864 struct ofproto_trace {
5865 struct action_xlate_ctx ctx;
5871 trace_format_rule(struct ds *result, uint8_t table_id, int level,
5872 const struct rule_dpif *rule)
5874 ds_put_char_multiple(result, '\t', level);
5876 ds_put_cstr(result, "No match\n");
5880 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5881 table_id, ntohll(rule->up.flow_cookie));
5882 cls_rule_format(&rule->up.cr, result);
5883 ds_put_char(result, '\n');
5885 ds_put_char_multiple(result, '\t', level);
5886 ds_put_cstr(result, "OpenFlow ");
5887 ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
5888 ds_put_char(result, '\n');
5892 trace_format_flow(struct ds *result, int level, const char *title,
5893 struct ofproto_trace *trace)
5895 ds_put_char_multiple(result, '\t', level);
5896 ds_put_format(result, "%s: ", title);
5897 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
5898 ds_put_cstr(result, "unchanged");
5900 flow_format(result, &trace->ctx.flow);
5901 trace->flow = trace->ctx.flow;
5903 ds_put_char(result, '\n');
5907 trace_format_regs(struct ds *result, int level, const char *title,
5908 struct ofproto_trace *trace)
5912 ds_put_char_multiple(result, '\t', level);
5913 ds_put_format(result, "%s:", title);
5914 for (i = 0; i < FLOW_N_REGS; i++) {
5915 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
5917 ds_put_char(result, '\n');
5921 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
5923 struct ofproto_trace *trace = CONTAINER_OF(ctx, struct ofproto_trace, ctx);
5924 struct ds *result = trace->result;
5926 ds_put_char(result, '\n');
5927 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
5928 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
5929 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
5933 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5934 void *aux OVS_UNUSED)
5936 const char *dpname = argv[1];
5937 struct ofproto_dpif *ofproto;
5938 struct ofpbuf odp_key;
5939 struct ofpbuf *packet;
5940 struct rule_dpif *rule;
5941 ovs_be16 initial_tci;
5947 ofpbuf_init(&odp_key, 0);
5950 ofproto = ofproto_dpif_lookup(dpname);
5952 unixctl_command_reply(conn, 501, "Unknown ofproto (use ofproto/list "
5956 if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) {
5957 /* ofproto/trace dpname flow [-generate] */
5958 const char *flow_s = argv[2];
5959 const char *generate_s = argv[3];
5962 /* Convert string to datapath key. */
5963 ofpbuf_init(&odp_key, 0);
5964 error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
5966 unixctl_command_reply(conn, 501, "Bad flow syntax");
5970 /* Convert odp_key to flow. */
5971 error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
5972 odp_key.size, &flow,
5973 &initial_tci, NULL);
5974 if (error == ODP_FIT_ERROR) {
5975 unixctl_command_reply(conn, 501, "Invalid flow");
5979 /* Generate a packet, if requested. */
5981 packet = ofpbuf_new(0);
5982 flow_compose(packet, &flow);
5984 } else if (argc == 6) {
5985 /* ofproto/trace dpname priority tun_id in_port packet */
5986 const char *priority_s = argv[2];
5987 const char *tun_id_s = argv[3];
5988 const char *in_port_s = argv[4];
5989 const char *packet_s = argv[5];
5990 uint16_t in_port = ofp_port_to_odp_port(atoi(in_port_s));
5991 ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
5992 uint32_t priority = atoi(priority_s);
5995 msg = eth_from_hex(packet_s, &packet);
5997 unixctl_command_reply(conn, 501, msg);
6001 ds_put_cstr(&result, "Packet: ");
6002 s = ofp_packet_to_string(packet->data, packet->size);
6003 ds_put_cstr(&result, s);
6006 flow_extract(packet, priority, tun_id, in_port, &flow);
6007 initial_tci = flow.vlan_tci;
6009 unixctl_command_reply(conn, 501, "Bad command syntax");
6013 ds_put_cstr(&result, "Flow: ");
6014 flow_format(&result, &flow);
6015 ds_put_char(&result, '\n');
6017 rule = rule_dpif_lookup(ofproto, &flow, 0);
6018 trace_format_rule(&result, 0, 0, rule);
6020 struct ofproto_trace trace;
6021 struct ofpbuf *odp_actions;
6023 trace.result = &result;
6025 action_xlate_ctx_init(&trace.ctx, ofproto, &flow, initial_tci,
6026 rule->up.flow_cookie, packet);
6027 trace.ctx.resubmit_hook = trace_resubmit;
6028 odp_actions = xlate_actions(&trace.ctx,
6029 rule->up.actions, rule->up.n_actions);
6031 ds_put_char(&result, '\n');
6032 trace_format_flow(&result, 0, "Final flow", &trace);
6033 ds_put_cstr(&result, "Datapath actions: ");
6034 format_odp_actions(&result, odp_actions->data, odp_actions->size);
6035 ofpbuf_delete(odp_actions);
6037 if (!trace.ctx.may_set_up_flow) {
6039 ds_put_cstr(&result, "\nThis flow is not cachable.");
6041 ds_put_cstr(&result, "\nThe datapath actions are incomplete--"
6042 "for complete actions, please supply a packet.");
6047 unixctl_command_reply(conn, 200, ds_cstr(&result));
6050 ds_destroy(&result);
6051 ofpbuf_delete(packet);
6052 ofpbuf_uninit(&odp_key);
6056 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6057 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6060 unixctl_command_reply(conn, 200, NULL);
6064 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6065 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6068 unixctl_command_reply(conn, 200, NULL);
6071 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
6072 * 'reply' describing the results. */
6074 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
6076 struct facet *facet;
6080 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
6081 if (!facet_check_consistency(facet)) {
6086 ofproto->need_revalidate = true;
6090 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
6091 ofproto->up.name, errors);
6093 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
6098 ofproto_dpif_self_check(struct unixctl_conn *conn,
6099 int argc, const char *argv[], void *aux OVS_UNUSED)
6101 struct ds reply = DS_EMPTY_INITIALIZER;
6102 struct ofproto_dpif *ofproto;
6105 ofproto = ofproto_dpif_lookup(argv[1]);
6107 unixctl_command_reply(conn, 501, "Unknown ofproto (use "
6108 "ofproto/list for help)");
6111 ofproto_dpif_self_check__(ofproto, &reply);
6113 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
6114 ofproto_dpif_self_check__(ofproto, &reply);
6118 unixctl_command_reply(conn, 200, ds_cstr(&reply));
6123 ofproto_dpif_unixctl_init(void)
6125 static bool registered;
6131 unixctl_command_register(
6133 "bridge {tun_id in_port packet | odp_flow [-generate]}",
6134 2, 5, ofproto_unixctl_trace, NULL);
6135 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6136 ofproto_unixctl_fdb_flush, NULL);
6137 unixctl_command_register("fdb/show", "bridge", 1, 1,
6138 ofproto_unixctl_fdb_show, NULL);
6139 unixctl_command_register("ofproto/clog", "", 0, 0,
6140 ofproto_dpif_clog, NULL);
6141 unixctl_command_register("ofproto/unclog", "", 0, 0,
6142 ofproto_dpif_unclog, NULL);
6143 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6144 ofproto_dpif_self_check, NULL);
6147 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6149 * This is deprecated. It is only for compatibility with broken device drivers
6150 * in old versions of Linux that do not properly support VLANs when VLAN
6151 * devices are not used. When broken device drivers are no longer in
6152 * widespread use, we will delete these interfaces. */
6155 set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
6157 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6158 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6160 if (realdev_ofp_port == ofport->realdev_ofp_port
6161 && vid == ofport->vlandev_vid) {
6165 ofproto->need_revalidate = true;
6167 if (ofport->realdev_ofp_port) {
6170 if (realdev_ofp_port && ofport->bundle) {
6171 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6172 * themselves be part of a bundle. */
6173 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6176 ofport->realdev_ofp_port = realdev_ofp_port;
6177 ofport->vlandev_vid = vid;
6179 if (realdev_ofp_port) {
6180 vsp_add(ofport, realdev_ofp_port, vid);
6187 hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
6189 return hash_2words(realdev_ofp_port, vid);
6193 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6194 uint32_t realdev_odp_port, ovs_be16 vlan_tci)
6196 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6197 uint16_t realdev_ofp_port = odp_port_to_ofp_port(realdev_odp_port);
6198 int vid = vlan_tci_to_vid(vlan_tci);
6199 const struct vlan_splinter *vsp;
6201 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6202 hash_realdev_vid(realdev_ofp_port, vid),
6203 &ofproto->realdev_vid_map) {
6204 if (vsp->realdev_ofp_port == realdev_ofp_port
6205 && vsp->vid == vid) {
6206 return ofp_port_to_odp_port(vsp->vlandev_ofp_port);
6210 return realdev_odp_port;
6213 static struct vlan_splinter *
6214 vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port)
6216 struct vlan_splinter *vsp;
6218 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0),
6219 &ofproto->vlandev_map) {
6220 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6229 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6230 uint16_t vlandev_ofp_port, int *vid)
6232 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6233 const struct vlan_splinter *vsp;
6235 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6240 return vsp->realdev_ofp_port;
6247 vsp_remove(struct ofport_dpif *port)
6249 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6250 struct vlan_splinter *vsp;
6252 vsp = vlandev_find(ofproto, port->up.ofp_port);
6254 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6255 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6258 port->realdev_ofp_port = 0;
6260 VLOG_ERR("missing vlan device record");
6265 vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
6267 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6269 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6270 && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid))
6271 == realdev_ofp_port)) {
6272 struct vlan_splinter *vsp;
6274 vsp = xmalloc(sizeof *vsp);
6275 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6276 hash_int(port->up.ofp_port, 0));
6277 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6278 hash_realdev_vid(realdev_ofp_port, vid));
6279 vsp->realdev_ofp_port = realdev_ofp_port;
6280 vsp->vlandev_ofp_port = port->up.ofp_port;
6283 port->realdev_ofp_port = realdev_ofp_port;
6285 VLOG_ERR("duplicate vlan device record");
6289 const struct ofproto_class ofproto_dpif_class = {
6318 port_is_lacp_current,
6319 NULL, /* rule_choose_table */
6326 rule_modify_actions,
6334 get_cfm_remote_mpids,
6338 get_stp_port_status,
6345 is_mirror_output_bundle,
6346 forward_bpdu_changed,