2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofproto/ofproto-provider.h"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "meta-flow.h"
38 #include "multipath.h"
45 #include "ofp-print.h"
46 #include "ofproto-dpif-sflow.h"
47 #include "poll-loop.h"
49 #include "unaligned.h"
51 #include "vlan-bitmap.h"
54 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
56 COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
57 COVERAGE_DEFINE(ofproto_dpif_expired);
58 COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
59 COVERAGE_DEFINE(ofproto_dpif_xlate);
60 COVERAGE_DEFINE(facet_changed_rule);
61 COVERAGE_DEFINE(facet_invalidated);
62 COVERAGE_DEFINE(facet_revalidate);
63 COVERAGE_DEFINE(facet_unexpected);
65 /* Maximum depth of flow table recursion (due to resubmit actions) in a
66 * flow translation. */
67 #define MAX_RESUBMIT_RECURSION 32
69 /* Number of implemented OpenFlow tables. */
70 enum { N_TABLES = 255 };
71 BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
81 * - Do include packets and bytes from facets that have been deleted or
82 * whose own statistics have been folded into the rule.
84 * - Do include packets and bytes sent "by hand" that were accounted to
85 * the rule without any facet being involved (this is a rare corner
86 * case in rule_execute()).
88 * - Do not include packet or bytes that can be obtained from any facet's
89 * packet_count or byte_count member or that can be obtained from the
90 * datapath by, e.g., dpif_flow_get() for any subfacet.
92 uint64_t packet_count; /* Number of packets received. */
93 uint64_t byte_count; /* Number of bytes received. */
95 tag_type tag; /* Caches rule_calculate_tag() result. */
97 struct list facets; /* List of "struct facet"s. */
100 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
102 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
105 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
106 const struct flow *, uint8_t table);
108 static void flow_push_stats(struct rule_dpif *, const struct flow *,
109 uint64_t packets, uint64_t bytes,
112 static tag_type rule_calculate_tag(const struct flow *,
113 const struct flow_wildcards *,
115 static void rule_invalidate(const struct rule_dpif *);
117 #define MAX_MIRRORS 32
118 typedef uint32_t mirror_mask_t;
119 #define MIRROR_MASK_C(X) UINT32_C(X)
120 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
122 struct ofproto_dpif *ofproto; /* Owning ofproto. */
123 size_t idx; /* In ofproto's "mirrors" array. */
124 void *aux; /* Key supplied by ofproto's client. */
125 char *name; /* Identifier for log messages. */
127 /* Selection criteria. */
128 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
129 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
130 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
132 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
133 struct ofbundle *out; /* Output port or NULL. */
134 int out_vlan; /* Output VLAN or -1. */
135 mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
138 int64_t packet_count; /* Number of packets sent. */
139 int64_t byte_count; /* Number of bytes sent. */
142 static void mirror_destroy(struct ofmirror *);
143 static void update_mirror_stats(struct ofproto_dpif *ofproto,
144 mirror_mask_t mirrors,
145 uint64_t packets, uint64_t bytes);
148 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
149 struct ofproto_dpif *ofproto; /* Owning ofproto. */
150 void *aux; /* Key supplied by ofproto's client. */
151 char *name; /* Identifier for log messages. */
154 struct list ports; /* Contains "struct ofport"s. */
155 enum port_vlan_mode vlan_mode; /* VLAN mode */
156 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
157 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
158 * NULL if all VLANs are trunked. */
159 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
160 struct bond *bond; /* Nonnull iff more than one port. */
161 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
164 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
166 /* Port mirroring info. */
167 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
168 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
169 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
172 static void bundle_remove(struct ofport *);
173 static void bundle_update(struct ofbundle *);
174 static void bundle_destroy(struct ofbundle *);
175 static void bundle_del_port(struct ofport_dpif *);
176 static void bundle_run(struct ofbundle *);
177 static void bundle_wait(struct ofbundle *);
178 static struct ofbundle *lookup_input_bundle(struct ofproto_dpif *,
179 uint16_t in_port, bool warn);
181 /* A controller may use OFPP_NONE as the ingress port to indicate that
182 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
183 * when an input bundle is needed for validation (e.g., mirroring or
184 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
185 * any 'port' structs, so care must be taken when dealing with it. */
186 static struct ofbundle ofpp_none_bundle = {
188 .vlan_mode = PORT_VLAN_TRUNK
191 static void stp_run(struct ofproto_dpif *ofproto);
192 static void stp_wait(struct ofproto_dpif *ofproto);
193 static int set_stp_port(struct ofport *,
194 const struct ofproto_port_stp_settings *);
196 static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan);
198 struct action_xlate_ctx {
199 /* action_xlate_ctx_init() initializes these members. */
202 struct ofproto_dpif *ofproto;
204 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
205 * this flow when actions change header fields. */
208 /* The packet corresponding to 'flow', or a null pointer if we are
209 * revalidating without a packet to refer to. */
210 const struct ofpbuf *packet;
212 /* Should OFPP_NORMAL update the MAC learning table? We want to update it
213 * if we are actually processing a packet, or if we are accounting for
214 * packets that the datapath has processed, but not if we are just
218 /* Should "learn" actions update the flow table? We want to update it if
219 * we are actually processing a packet, or in most cases if we are
220 * accounting for packets that the datapath has processed, but not if we
221 * are just revalidating. */
224 /* The rule that we are currently translating, or NULL. */
225 struct rule_dpif *rule;
227 /* Union of the set of TCP flags seen so far in this flow. (Used only by
228 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
232 /* If nonnull, called just before executing a resubmit action. In
233 * addition, disables logging of traces when the recursion depth is
236 * This is normally null so the client has to set it manually after
237 * calling action_xlate_ctx_init(). */
238 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
240 /* xlate_actions() initializes and uses these members. The client might want
241 * to look at them after it returns. */
243 struct ofpbuf *odp_actions; /* Datapath actions. */
244 tag_type tags; /* Tags associated with actions. */
245 bool may_set_up_flow; /* True ordinarily; false if the actions must
246 * be reassessed for every packet. */
247 bool has_learn; /* Actions include NXAST_LEARN? */
248 bool has_normal; /* Actions output to OFPP_NORMAL? */
249 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
250 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
251 mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
253 /* xlate_actions() initializes and uses these members, but the client has no
254 * reason to look at them. */
256 int recurse; /* Recursion level, via xlate_table_action. */
257 bool max_resubmit_trigger; /* Recursed too deeply during translation. */
258 struct flow base_flow; /* Flow at the last commit. */
259 uint32_t orig_skb_priority; /* Priority when packet arrived. */
260 uint8_t table_id; /* OpenFlow table ID where flow was found. */
261 uint32_t sflow_n_outputs; /* Number of output ports. */
262 uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
263 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
264 bool exit; /* No further actions should be processed. */
267 static void action_xlate_ctx_init(struct action_xlate_ctx *,
268 struct ofproto_dpif *, const struct flow *,
269 ovs_be16 initial_tci, struct rule_dpif *,
270 uint8_t tcp_flags, const struct ofpbuf *);
271 static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
272 const union ofp_action *in, size_t n_in);
274 /* An exact-match instantiation of an OpenFlow flow.
276 * A facet associates a "struct flow", which represents the Open vSwitch
277 * userspace idea of an exact-match flow, with one or more subfacets. Each
278 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
279 * the facet. When the kernel module (or other dpif implementation) and Open
280 * vSwitch userspace agree on the definition of a flow key, there is exactly
281 * one subfacet per facet. If the dpif implementation supports more-specific
282 * flow matching than userspace, however, a facet can have more than one
283 * subfacet, each of which corresponds to some distinction in flow that
284 * userspace simply doesn't understand.
286 * Flow expiration works in terms of subfacets, so a facet must have at least
287 * one subfacet or it will never expire, leaking memory. */
290 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
291 struct list list_node; /* In owning rule's 'facets' list. */
292 struct rule_dpif *rule; /* Owning rule. */
295 struct list subfacets;
296 long long int used; /* Time last used; time created if not used. */
303 * - Do include packets and bytes sent "by hand", e.g. with
306 * - Do include packets and bytes that were obtained from the datapath
307 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
308 * DPIF_FP_ZERO_STATS).
310 * - Do not include packets or bytes that can be obtained from the
311 * datapath for any existing subfacet.
313 uint64_t packet_count; /* Number of packets received. */
314 uint64_t byte_count; /* Number of bytes received. */
316 /* Resubmit statistics. */
317 uint64_t prev_packet_count; /* Number of packets from last stats push. */
318 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
319 long long int prev_used; /* Used time from last stats push. */
322 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
323 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
324 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
326 /* Properties of datapath actions.
328 * Every subfacet has its own actions because actions can differ slightly
329 * between splintered and non-splintered subfacets due to the VLAN tag
330 * being initially different (present vs. absent). All of them have these
331 * properties in common so we just store one copy of them here. */
332 bool may_install; /* Reassess actions for every packet? */
333 bool has_learn; /* Actions include NXAST_LEARN? */
334 bool has_normal; /* Actions output to OFPP_NORMAL? */
335 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
336 tag_type tags; /* Tags that would require revalidation. */
337 mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
340 static struct facet *facet_create(struct rule_dpif *, const struct flow *);
341 static void facet_remove(struct facet *);
342 static void facet_free(struct facet *);
344 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
345 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
346 const struct flow *);
347 static bool facet_revalidate(struct facet *);
348 static bool facet_check_consistency(struct facet *);
350 static void facet_flush_stats(struct facet *);
352 static void facet_update_time(struct facet *, long long int used);
353 static void facet_reset_counters(struct facet *);
354 static void facet_push_stats(struct facet *);
355 static void facet_account(struct facet *, bool may_flow_mod);
357 static bool facet_is_controller_flow(struct facet *);
359 /* A dpif flow and actions associated with a facet.
361 * See also the large comment on struct facet. */
364 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
365 struct list list_node; /* In struct facet's 'facets' list. */
366 struct facet *facet; /* Owning facet. */
370 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
371 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
372 * regenerate the ODP flow key from ->facet->flow. */
373 enum odp_key_fitness key_fitness;
377 long long int used; /* Time last used; time created if not used. */
379 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
380 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
384 * These should be essentially identical for every subfacet in a facet, but
385 * may differ in trivial ways due to VLAN splinters. */
386 size_t actions_len; /* Number of bytes in actions[]. */
387 struct nlattr *actions; /* Datapath actions. */
389 bool installed; /* Installed in datapath? */
391 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
392 * splinters can cause it to differ. This value should be removed when
393 * the VLAN splinters feature is no longer needed. */
394 ovs_be16 initial_tci; /* Initial VLAN TCI value. */
397 static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
398 const struct nlattr *key,
399 size_t key_len, ovs_be16 initial_tci);
400 static struct subfacet *subfacet_find(struct ofproto_dpif *,
401 const struct nlattr *key, size_t key_len);
402 static void subfacet_destroy(struct subfacet *);
403 static void subfacet_destroy__(struct subfacet *);
404 static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
406 static void subfacet_reset_dp_stats(struct subfacet *,
407 struct dpif_flow_stats *);
408 static void subfacet_update_time(struct subfacet *, long long int used);
409 static void subfacet_update_stats(struct subfacet *,
410 const struct dpif_flow_stats *);
411 static void subfacet_make_actions(struct subfacet *,
412 const struct ofpbuf *packet);
413 static int subfacet_install(struct subfacet *,
414 const struct nlattr *actions, size_t actions_len,
415 struct dpif_flow_stats *);
416 static void subfacet_uninstall(struct subfacet *);
422 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
423 struct list bundle_node; /* In struct ofbundle's "ports" list. */
424 struct cfm *cfm; /* Connectivity Fault Management, if any. */
425 tag_type tag; /* Tag associated with this port. */
426 uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
427 bool may_enable; /* May be enabled in bonds. */
428 long long int carrier_seq; /* Carrier status changes. */
431 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
432 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
433 long long int stp_state_entered;
435 struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
437 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
439 * This is deprecated. It is only for compatibility with broken device
440 * drivers in old versions of Linux that do not properly support VLANs when
441 * VLAN devices are not used. When broken device drivers are no longer in
442 * widespread use, we will delete these interfaces. */
443 uint16_t realdev_ofp_port;
447 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
448 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
449 * traffic egressing the 'ofport' with that priority should be marked with. */
450 struct priority_to_dscp {
451 struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */
452 uint32_t priority; /* Priority of this queue (see struct flow). */
454 uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */
457 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
459 * This is deprecated. It is only for compatibility with broken device drivers
460 * in old versions of Linux that do not properly support VLANs when VLAN
461 * devices are not used. When broken device drivers are no longer in
462 * widespread use, we will delete these interfaces. */
463 struct vlan_splinter {
464 struct hmap_node realdev_vid_node;
465 struct hmap_node vlandev_node;
466 uint16_t realdev_ofp_port;
467 uint16_t vlandev_ofp_port;
471 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
472 uint32_t realdev, ovs_be16 vlan_tci);
473 static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif *,
474 uint16_t vlandev, int *vid);
475 static void vsp_remove(struct ofport_dpif *);
476 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
478 static struct ofport_dpif *
479 ofport_dpif_cast(const struct ofport *ofport)
481 assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
482 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
485 static void port_run(struct ofport_dpif *);
486 static void port_wait(struct ofport_dpif *);
487 static int set_cfm(struct ofport *, const struct cfm_settings *);
488 static void ofport_clear_priorities(struct ofport_dpif *);
490 struct dpif_completion {
491 struct list list_node;
492 struct ofoperation *op;
495 /* Extra information about a classifier table.
496 * Currently used just for optimized flow revalidation. */
498 /* If either of these is nonnull, then this table has a form that allows
499 * flows to be tagged to avoid revalidating most flows for the most common
500 * kinds of flow table changes. */
501 struct cls_table *catchall_table; /* Table that wildcards all fields. */
502 struct cls_table *other_table; /* Table with any other wildcard set. */
503 uint32_t basis; /* Keeps each table's tags separate. */
506 struct ofproto_dpif {
507 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
516 struct netflow *netflow;
517 struct dpif_sflow *sflow;
518 struct hmap bundles; /* Contains "struct ofbundle"s. */
519 struct mac_learning *ml;
520 struct ofmirror *mirrors[MAX_MIRRORS];
521 bool has_bonded_bundles;
524 struct timer next_expiration;
528 struct hmap subfacets;
531 struct table_dpif tables[N_TABLES];
532 bool need_revalidate;
533 struct tag_set revalidate_set;
535 /* Support for debugging async flow mods. */
536 struct list completions;
538 bool has_bundle_action; /* True when the first bundle action appears. */
539 struct netdev_stats stats; /* To account packets generated and consumed in
544 long long int stp_last_tick;
546 /* VLAN splinters. */
547 struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
548 struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
551 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
552 * for debugging the asynchronous flow_mod implementation.) */
555 /* All existing ofproto_dpif instances, indexed by ->up.name. */
556 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
558 static void ofproto_dpif_unixctl_init(void);
560 static struct ofproto_dpif *
561 ofproto_dpif_cast(const struct ofproto *ofproto)
563 assert(ofproto->ofproto_class == &ofproto_dpif_class);
564 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
567 static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
569 static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
571 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
572 const struct ofpbuf *, ovs_be16 initial_tci,
575 /* Packet processing. */
576 static void update_learning_table(struct ofproto_dpif *,
577 const struct flow *, int vlan,
580 #define FLOW_MISS_MAX_BATCH 50
581 static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
583 /* Flow expiration. */
584 static int expire(struct ofproto_dpif *);
587 static void send_netflow_active_timeouts(struct ofproto_dpif *);
590 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
592 compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
593 const struct flow *, uint32_t odp_port);
594 static void add_mirror_actions(struct action_xlate_ctx *ctx,
595 const struct flow *flow);
596 /* Global variables. */
597 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
599 /* Factory functions. */
602 enumerate_types(struct sset *types)
604 dp_enumerate_types(types);
608 enumerate_names(const char *type, struct sset *names)
610 return dp_enumerate_names(type, names);
614 del(const char *type, const char *name)
619 error = dpif_open(name, type, &dpif);
621 error = dpif_delete(dpif);
627 /* Basic life-cycle. */
629 static struct ofproto *
632 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
637 dealloc(struct ofproto *ofproto_)
639 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
644 construct(struct ofproto *ofproto_)
646 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
647 const char *name = ofproto->up.name;
651 error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
653 VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
657 ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
658 ofproto->n_matches = 0;
660 dpif_flow_flush(ofproto->dpif);
661 dpif_recv_purge(ofproto->dpif);
663 error = dpif_recv_set(ofproto->dpif, true);
665 VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
666 dpif_close(ofproto->dpif);
670 ofproto->netflow = NULL;
671 ofproto->sflow = NULL;
673 hmap_init(&ofproto->bundles);
674 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
675 for (i = 0; i < MAX_MIRRORS; i++) {
676 ofproto->mirrors[i] = NULL;
678 ofproto->has_bonded_bundles = false;
680 timer_set_duration(&ofproto->next_expiration, 1000);
682 hmap_init(&ofproto->facets);
683 hmap_init(&ofproto->subfacets);
685 for (i = 0; i < N_TABLES; i++) {
686 struct table_dpif *table = &ofproto->tables[i];
688 table->catchall_table = NULL;
689 table->other_table = NULL;
690 table->basis = random_uint32();
692 ofproto->need_revalidate = false;
693 tag_set_init(&ofproto->revalidate_set);
695 list_init(&ofproto->completions);
697 ofproto_dpif_unixctl_init();
699 ofproto->has_bundle_action = false;
701 hmap_init(&ofproto->vlandev_map);
702 hmap_init(&ofproto->realdev_vid_map);
704 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
705 hash_string(ofproto->up.name, 0));
706 memset(&ofproto->stats, 0, sizeof ofproto->stats);
708 ofproto_init_tables(ofproto_, N_TABLES);
714 complete_operations(struct ofproto_dpif *ofproto)
716 struct dpif_completion *c, *next;
718 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
719 ofoperation_complete(c->op, 0);
720 list_remove(&c->list_node);
726 destruct(struct ofproto *ofproto_)
728 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
729 struct rule_dpif *rule, *next_rule;
730 struct oftable *table;
733 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
734 complete_operations(ofproto);
736 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
737 struct cls_cursor cursor;
739 cls_cursor_init(&cursor, &table->cls, NULL);
740 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
741 ofproto_rule_destroy(&rule->up);
745 for (i = 0; i < MAX_MIRRORS; i++) {
746 mirror_destroy(ofproto->mirrors[i]);
749 netflow_destroy(ofproto->netflow);
750 dpif_sflow_destroy(ofproto->sflow);
751 hmap_destroy(&ofproto->bundles);
752 mac_learning_destroy(ofproto->ml);
754 hmap_destroy(&ofproto->facets);
755 hmap_destroy(&ofproto->subfacets);
757 hmap_destroy(&ofproto->vlandev_map);
758 hmap_destroy(&ofproto->realdev_vid_map);
760 dpif_close(ofproto->dpif);
764 run_fast(struct ofproto *ofproto_)
766 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
769 /* Handle one or more batches of upcalls, until there's nothing left to do
770 * or until we do a fixed total amount of work.
772 * We do work in batches because it can be much cheaper to set up a number
773 * of flows and fire off their patches all at once. We do multiple batches
774 * because in some cases handling a packet can cause another packet to be
775 * queued almost immediately as part of the return flow. Both
776 * optimizations can make major improvements on some benchmarks and
777 * presumably for real traffic as well. */
779 while (work < FLOW_MISS_MAX_BATCH) {
780 int retval = handle_upcalls(ofproto, FLOW_MISS_MAX_BATCH - work);
790 run(struct ofproto *ofproto_)
792 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
793 struct ofport_dpif *ofport;
794 struct ofbundle *bundle;
798 complete_operations(ofproto);
800 dpif_run(ofproto->dpif);
802 error = run_fast(ofproto_);
807 if (timer_expired(&ofproto->next_expiration)) {
808 int delay = expire(ofproto);
809 timer_set_duration(&ofproto->next_expiration, delay);
812 if (ofproto->netflow) {
813 if (netflow_run(ofproto->netflow)) {
814 send_netflow_active_timeouts(ofproto);
817 if (ofproto->sflow) {
818 dpif_sflow_run(ofproto->sflow);
821 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
824 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
829 mac_learning_run(ofproto->ml, &ofproto->revalidate_set);
831 /* Now revalidate if there's anything to do. */
832 if (ofproto->need_revalidate
833 || !tag_set_is_empty(&ofproto->revalidate_set)) {
834 struct tag_set revalidate_set = ofproto->revalidate_set;
835 bool revalidate_all = ofproto->need_revalidate;
836 struct facet *facet, *next;
838 /* Clear the revalidation flags. */
839 tag_set_init(&ofproto->revalidate_set);
840 ofproto->need_revalidate = false;
842 HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
844 || tag_set_intersects(&revalidate_set, facet->tags)) {
845 facet_revalidate(facet);
850 /* Check the consistency of a random facet, to aid debugging. */
851 if (!hmap_is_empty(&ofproto->facets) && !ofproto->need_revalidate) {
854 facet = CONTAINER_OF(hmap_random_node(&ofproto->facets),
855 struct facet, hmap_node);
856 if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) {
857 if (!facet_check_consistency(facet)) {
858 ofproto->need_revalidate = true;
867 wait(struct ofproto *ofproto_)
869 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
870 struct ofport_dpif *ofport;
871 struct ofbundle *bundle;
873 if (!clogged && !list_is_empty(&ofproto->completions)) {
874 poll_immediate_wake();
877 dpif_wait(ofproto->dpif);
878 dpif_recv_wait(ofproto->dpif);
879 if (ofproto->sflow) {
880 dpif_sflow_wait(ofproto->sflow);
882 if (!tag_set_is_empty(&ofproto->revalidate_set)) {
883 poll_immediate_wake();
885 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
888 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
891 if (ofproto->netflow) {
892 netflow_wait(ofproto->netflow);
894 mac_learning_wait(ofproto->ml);
896 if (ofproto->need_revalidate) {
897 /* Shouldn't happen, but if it does just go around again. */
898 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
899 poll_immediate_wake();
901 timer_wait(&ofproto->next_expiration);
906 flush(struct ofproto *ofproto_)
908 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
909 struct facet *facet, *next_facet;
911 HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
912 /* Mark the facet as not installed so that facet_remove() doesn't
913 * bother trying to uninstall it. There is no point in uninstalling it
914 * individually since we are about to blow away all the facets with
915 * dpif_flow_flush(). */
916 struct subfacet *subfacet;
918 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
919 subfacet->installed = false;
920 subfacet->dp_packet_count = 0;
921 subfacet->dp_byte_count = 0;
925 dpif_flow_flush(ofproto->dpif);
929 get_features(struct ofproto *ofproto_ OVS_UNUSED,
930 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
932 *arp_match_ip = true;
933 *actions = (OFPUTIL_A_OUTPUT |
934 OFPUTIL_A_SET_VLAN_VID |
935 OFPUTIL_A_SET_VLAN_PCP |
936 OFPUTIL_A_STRIP_VLAN |
937 OFPUTIL_A_SET_DL_SRC |
938 OFPUTIL_A_SET_DL_DST |
939 OFPUTIL_A_SET_NW_SRC |
940 OFPUTIL_A_SET_NW_DST |
941 OFPUTIL_A_SET_NW_TOS |
942 OFPUTIL_A_SET_TP_SRC |
943 OFPUTIL_A_SET_TP_DST |
948 get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots)
950 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
951 struct dpif_dp_stats s;
953 strcpy(ots->name, "classifier");
955 dpif_get_dp_stats(ofproto->dpif, &s);
956 put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
957 put_32aligned_be64(&ots->matched_count,
958 htonll(s.n_hit + ofproto->n_matches));
961 static struct ofport *
964 struct ofport_dpif *port = xmalloc(sizeof *port);
969 port_dealloc(struct ofport *port_)
971 struct ofport_dpif *port = ofport_dpif_cast(port_);
976 port_construct(struct ofport *port_)
978 struct ofport_dpif *port = ofport_dpif_cast(port_);
979 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
981 ofproto->need_revalidate = true;
982 port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
985 port->tag = tag_create_random();
986 port->may_enable = true;
987 port->stp_port = NULL;
988 port->stp_state = STP_DISABLED;
989 hmap_init(&port->priorities);
990 port->realdev_ofp_port = 0;
991 port->vlandev_vid = 0;
992 port->carrier_seq = netdev_get_carrier_resets(port->up.netdev);
994 if (ofproto->sflow) {
995 dpif_sflow_add_port(ofproto->sflow, port_);
1002 port_destruct(struct ofport *port_)
1004 struct ofport_dpif *port = ofport_dpif_cast(port_);
1005 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1007 ofproto->need_revalidate = true;
1008 bundle_remove(port_);
1009 set_cfm(port_, NULL);
1010 if (ofproto->sflow) {
1011 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1014 ofport_clear_priorities(port);
1015 hmap_destroy(&port->priorities);
1019 port_modified(struct ofport *port_)
1021 struct ofport_dpif *port = ofport_dpif_cast(port_);
1023 if (port->bundle && port->bundle->bond) {
1024 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1029 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1031 struct ofport_dpif *port = ofport_dpif_cast(port_);
1032 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1033 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1035 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1036 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD)) {
1037 ofproto->need_revalidate = true;
1039 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1040 bundle_update(port->bundle);
1046 set_sflow(struct ofproto *ofproto_,
1047 const struct ofproto_sflow_options *sflow_options)
1049 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1050 struct dpif_sflow *ds = ofproto->sflow;
1052 if (sflow_options) {
1054 struct ofport_dpif *ofport;
1056 ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
1057 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1058 dpif_sflow_add_port(ds, &ofport->up);
1060 ofproto->need_revalidate = true;
1062 dpif_sflow_set_options(ds, sflow_options);
1065 dpif_sflow_destroy(ds);
1066 ofproto->need_revalidate = true;
1067 ofproto->sflow = NULL;
1074 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1076 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1083 struct ofproto_dpif *ofproto;
1085 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1086 ofproto->need_revalidate = true;
1087 ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
1090 if (cfm_configure(ofport->cfm, s)) {
1096 cfm_destroy(ofport->cfm);
1102 get_cfm_fault(const struct ofport *ofport_)
1104 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1106 return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
1110 get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
1113 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1116 cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
1124 get_cfm_health(const struct ofport *ofport_)
1126 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1128 return ofport->cfm ? cfm_get_health(ofport->cfm) : -1;
1131 /* Spanning Tree. */
1134 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
1136 struct ofproto_dpif *ofproto = ofproto_;
1137 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
1138 struct ofport_dpif *ofport;
1140 ofport = stp_port_get_aux(sp);
1142 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
1143 ofproto->up.name, port_num);
1145 struct eth_header *eth = pkt->l2;
1147 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
1148 if (eth_addr_is_zero(eth->eth_src)) {
1149 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
1150 "with unknown MAC", ofproto->up.name, port_num);
1152 send_packet(ofport, pkt);
1158 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1160 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
1162 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1164 /* Only revalidate flows if the configuration changed. */
1165 if (!s != !ofproto->stp) {
1166 ofproto->need_revalidate = true;
1170 if (!ofproto->stp) {
1171 ofproto->stp = stp_create(ofproto_->name, s->system_id,
1172 send_bpdu_cb, ofproto);
1173 ofproto->stp_last_tick = time_msec();
1176 stp_set_bridge_id(ofproto->stp, s->system_id);
1177 stp_set_bridge_priority(ofproto->stp, s->priority);
1178 stp_set_hello_time(ofproto->stp, s->hello_time);
1179 stp_set_max_age(ofproto->stp, s->max_age);
1180 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
1182 struct ofport *ofport;
1184 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
1185 set_stp_port(ofport, NULL);
1188 stp_destroy(ofproto->stp);
1189 ofproto->stp = NULL;
1196 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
1198 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1202 s->bridge_id = stp_get_bridge_id(ofproto->stp);
1203 s->designated_root = stp_get_designated_root(ofproto->stp);
1204 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
1213 update_stp_port_state(struct ofport_dpif *ofport)
1215 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1216 enum stp_state state;
1218 /* Figure out new state. */
1219 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
1223 if (ofport->stp_state != state) {
1224 enum ofputil_port_state of_state;
1227 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
1228 netdev_get_name(ofport->up.netdev),
1229 stp_state_name(ofport->stp_state),
1230 stp_state_name(state));
1231 if (stp_learn_in_state(ofport->stp_state)
1232 != stp_learn_in_state(state)) {
1233 /* xxx Learning action flows should also be flushed. */
1234 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1236 fwd_change = stp_forward_in_state(ofport->stp_state)
1237 != stp_forward_in_state(state);
1239 ofproto->need_revalidate = true;
1240 ofport->stp_state = state;
1241 ofport->stp_state_entered = time_msec();
1243 if (fwd_change && ofport->bundle) {
1244 bundle_update(ofport->bundle);
1247 /* Update the STP state bits in the OpenFlow port description. */
1248 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
1249 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
1250 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
1251 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
1252 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
1254 ofproto_port_set_state(&ofport->up, of_state);
1258 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1259 * caller is responsible for assigning STP port numbers and ensuring
1260 * there are no duplicates. */
1262 set_stp_port(struct ofport *ofport_,
1263 const struct ofproto_port_stp_settings *s)
1265 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1266 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1267 struct stp_port *sp = ofport->stp_port;
1269 if (!s || !s->enable) {
1271 ofport->stp_port = NULL;
1272 stp_port_disable(sp);
1273 update_stp_port_state(ofport);
1276 } else if (sp && stp_port_no(sp) != s->port_num
1277 && ofport == stp_port_get_aux(sp)) {
1278 /* The port-id changed, so disable the old one if it's not
1279 * already in use by another port. */
1280 stp_port_disable(sp);
1283 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
1284 stp_port_enable(sp);
1286 stp_port_set_aux(sp, ofport);
1287 stp_port_set_priority(sp, s->priority);
1288 stp_port_set_path_cost(sp, s->path_cost);
1290 update_stp_port_state(ofport);
1296 get_stp_port_status(struct ofport *ofport_,
1297 struct ofproto_port_stp_status *s)
1299 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1300 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1301 struct stp_port *sp = ofport->stp_port;
1303 if (!ofproto->stp || !sp) {
1309 s->port_id = stp_port_get_id(sp);
1310 s->state = stp_port_get_state(sp);
1311 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
1312 s->role = stp_port_get_role(sp);
1313 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
1319 stp_run(struct ofproto_dpif *ofproto)
1322 long long int now = time_msec();
1323 long long int elapsed = now - ofproto->stp_last_tick;
1324 struct stp_port *sp;
1327 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
1328 ofproto->stp_last_tick = now;
1330 while (stp_get_changed_port(ofproto->stp, &sp)) {
1331 struct ofport_dpif *ofport = stp_port_get_aux(sp);
1334 update_stp_port_state(ofport);
1338 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
1339 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1345 stp_wait(struct ofproto_dpif *ofproto)
1348 poll_timer_wait(1000);
1352 /* Returns true if STP should process 'flow'. */
1354 stp_should_process_flow(const struct flow *flow)
1356 return eth_addr_equals(flow->dl_dst, eth_addr_stp);
1360 stp_process_packet(const struct ofport_dpif *ofport,
1361 const struct ofpbuf *packet)
1363 struct ofpbuf payload = *packet;
1364 struct eth_header *eth = payload.data;
1365 struct stp_port *sp = ofport->stp_port;
1367 /* Sink packets on ports that have STP disabled when the bridge has
1369 if (!sp || stp_port_get_state(sp) == STP_DISABLED) {
1373 /* Trim off padding on payload. */
1374 if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
1375 payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN;
1378 if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
1379 stp_received_bpdu(sp, payload.data, payload.size);
1383 static struct priority_to_dscp *
1384 get_priority(const struct ofport_dpif *ofport, uint32_t priority)
1386 struct priority_to_dscp *pdscp;
1389 hash = hash_int(priority, 0);
1390 HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &ofport->priorities) {
1391 if (pdscp->priority == priority) {
1399 ofport_clear_priorities(struct ofport_dpif *ofport)
1401 struct priority_to_dscp *pdscp, *next;
1403 HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &ofport->priorities) {
1404 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1410 set_queues(struct ofport *ofport_,
1411 const struct ofproto_port_queue *qdscp_list,
1414 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1415 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1416 struct hmap new = HMAP_INITIALIZER(&new);
1419 for (i = 0; i < n_qdscp; i++) {
1420 struct priority_to_dscp *pdscp;
1424 dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK;
1425 if (dpif_queue_to_priority(ofproto->dpif, qdscp_list[i].queue,
1430 pdscp = get_priority(ofport, priority);
1432 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1434 pdscp = xmalloc(sizeof *pdscp);
1435 pdscp->priority = priority;
1437 ofproto->need_revalidate = true;
1440 if (pdscp->dscp != dscp) {
1442 ofproto->need_revalidate = true;
1445 hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
1448 if (!hmap_is_empty(&ofport->priorities)) {
1449 ofport_clear_priorities(ofport);
1450 ofproto->need_revalidate = true;
1453 hmap_swap(&new, &ofport->priorities);
1461 /* Expires all MAC learning entries associated with 'bundle' and forces its
1462 * ofproto to revalidate every flow.
1464 * Normally MAC learning entries are removed only from the ofproto associated
1465 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
1466 * are removed from every ofproto. When patch ports and SLB bonds are in use
1467 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
1468 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
1469 * with the host from which it migrated. */
1471 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
1473 struct ofproto_dpif *ofproto = bundle->ofproto;
1474 struct mac_learning *ml = ofproto->ml;
1475 struct mac_entry *mac, *next_mac;
1477 ofproto->need_revalidate = true;
1478 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
1479 if (mac->port.p == bundle) {
1481 struct ofproto_dpif *o;
1483 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1485 struct mac_entry *e;
1487 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan,
1490 tag_set_add(&o->revalidate_set, e->tag);
1491 mac_learning_expire(o->ml, e);
1497 mac_learning_expire(ml, mac);
1502 static struct ofbundle *
1503 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
1505 struct ofbundle *bundle;
1507 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
1508 &ofproto->bundles) {
1509 if (bundle->aux == aux) {
1516 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
1517 * ones that are found to 'bundles'. */
1519 bundle_lookup_multiple(struct ofproto_dpif *ofproto,
1520 void **auxes, size_t n_auxes,
1521 struct hmapx *bundles)
1525 hmapx_init(bundles);
1526 for (i = 0; i < n_auxes; i++) {
1527 struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
1529 hmapx_add(bundles, bundle);
1535 bundle_update(struct ofbundle *bundle)
1537 struct ofport_dpif *port;
1539 bundle->floodable = true;
1540 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1541 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
1542 || !stp_forward_in_state(port->stp_state)) {
1543 bundle->floodable = false;
1550 bundle_del_port(struct ofport_dpif *port)
1552 struct ofbundle *bundle = port->bundle;
1554 bundle->ofproto->need_revalidate = true;
1556 list_remove(&port->bundle_node);
1557 port->bundle = NULL;
1560 lacp_slave_unregister(bundle->lacp, port);
1563 bond_slave_unregister(bundle->bond, port);
1566 bundle_update(bundle);
1570 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
1571 struct lacp_slave_settings *lacp,
1572 uint32_t bond_stable_id)
1574 struct ofport_dpif *port;
1576 port = get_ofp_port(bundle->ofproto, ofp_port);
1581 if (port->bundle != bundle) {
1582 bundle->ofproto->need_revalidate = true;
1584 bundle_del_port(port);
1587 port->bundle = bundle;
1588 list_push_back(&bundle->ports, &port->bundle_node);
1589 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
1590 || !stp_forward_in_state(port->stp_state)) {
1591 bundle->floodable = false;
1595 port->bundle->ofproto->need_revalidate = true;
1596 lacp_slave_register(bundle->lacp, port, lacp);
1599 port->bond_stable_id = bond_stable_id;
1605 bundle_destroy(struct ofbundle *bundle)
1607 struct ofproto_dpif *ofproto;
1608 struct ofport_dpif *port, *next_port;
1615 ofproto = bundle->ofproto;
1616 for (i = 0; i < MAX_MIRRORS; i++) {
1617 struct ofmirror *m = ofproto->mirrors[i];
1619 if (m->out == bundle) {
1621 } else if (hmapx_find_and_delete(&m->srcs, bundle)
1622 || hmapx_find_and_delete(&m->dsts, bundle)) {
1623 ofproto->need_revalidate = true;
1628 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1629 bundle_del_port(port);
1632 bundle_flush_macs(bundle, true);
1633 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
1635 free(bundle->trunks);
1636 lacp_destroy(bundle->lacp);
1637 bond_destroy(bundle->bond);
1642 bundle_set(struct ofproto *ofproto_, void *aux,
1643 const struct ofproto_bundle_settings *s)
1645 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1646 bool need_flush = false;
1647 struct ofport_dpif *port;
1648 struct ofbundle *bundle;
1649 unsigned long *trunks;
1655 bundle_destroy(bundle_lookup(ofproto, aux));
1659 assert(s->n_slaves == 1 || s->bond != NULL);
1660 assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
1662 bundle = bundle_lookup(ofproto, aux);
1664 bundle = xmalloc(sizeof *bundle);
1666 bundle->ofproto = ofproto;
1667 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
1668 hash_pointer(aux, 0));
1670 bundle->name = NULL;
1672 list_init(&bundle->ports);
1673 bundle->vlan_mode = PORT_VLAN_TRUNK;
1675 bundle->trunks = NULL;
1676 bundle->use_priority_tags = s->use_priority_tags;
1677 bundle->lacp = NULL;
1678 bundle->bond = NULL;
1680 bundle->floodable = true;
1682 bundle->src_mirrors = 0;
1683 bundle->dst_mirrors = 0;
1684 bundle->mirror_out = 0;
1687 if (!bundle->name || strcmp(s->name, bundle->name)) {
1689 bundle->name = xstrdup(s->name);
1694 if (!bundle->lacp) {
1695 ofproto->need_revalidate = true;
1696 bundle->lacp = lacp_create();
1698 lacp_configure(bundle->lacp, s->lacp);
1700 lacp_destroy(bundle->lacp);
1701 bundle->lacp = NULL;
1704 /* Update set of ports. */
1706 for (i = 0; i < s->n_slaves; i++) {
1707 if (!bundle_add_port(bundle, s->slaves[i],
1708 s->lacp ? &s->lacp_slaves[i] : NULL,
1709 s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
1713 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
1714 struct ofport_dpif *next_port;
1716 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1717 for (i = 0; i < s->n_slaves; i++) {
1718 if (s->slaves[i] == port->up.ofp_port) {
1723 bundle_del_port(port);
1727 assert(list_size(&bundle->ports) <= s->n_slaves);
1729 if (list_is_empty(&bundle->ports)) {
1730 bundle_destroy(bundle);
1734 /* Set VLAN tagging mode */
1735 if (s->vlan_mode != bundle->vlan_mode
1736 || s->use_priority_tags != bundle->use_priority_tags) {
1737 bundle->vlan_mode = s->vlan_mode;
1738 bundle->use_priority_tags = s->use_priority_tags;
1743 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
1744 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
1746 if (vlan != bundle->vlan) {
1747 bundle->vlan = vlan;
1751 /* Get trunked VLANs. */
1752 switch (s->vlan_mode) {
1753 case PORT_VLAN_ACCESS:
1757 case PORT_VLAN_TRUNK:
1758 trunks = (unsigned long *) s->trunks;
1761 case PORT_VLAN_NATIVE_UNTAGGED:
1762 case PORT_VLAN_NATIVE_TAGGED:
1763 if (vlan != 0 && (!s->trunks
1764 || !bitmap_is_set(s->trunks, vlan)
1765 || bitmap_is_set(s->trunks, 0))) {
1766 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
1768 trunks = bitmap_clone(s->trunks, 4096);
1770 trunks = bitmap_allocate1(4096);
1772 bitmap_set1(trunks, vlan);
1773 bitmap_set0(trunks, 0);
1775 trunks = (unsigned long *) s->trunks;
1782 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
1783 free(bundle->trunks);
1784 if (trunks == s->trunks) {
1785 bundle->trunks = vlan_bitmap_clone(trunks);
1787 bundle->trunks = trunks;
1792 if (trunks != s->trunks) {
1797 if (!list_is_short(&bundle->ports)) {
1798 bundle->ofproto->has_bonded_bundles = true;
1800 if (bond_reconfigure(bundle->bond, s->bond)) {
1801 ofproto->need_revalidate = true;
1804 bundle->bond = bond_create(s->bond);
1805 ofproto->need_revalidate = true;
1808 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1809 bond_slave_register(bundle->bond, port, port->bond_stable_id,
1813 bond_destroy(bundle->bond);
1814 bundle->bond = NULL;
1817 /* If we changed something that would affect MAC learning, un-learn
1818 * everything on this port and force flow revalidation. */
1820 bundle_flush_macs(bundle, false);
1827 bundle_remove(struct ofport *port_)
1829 struct ofport_dpif *port = ofport_dpif_cast(port_);
1830 struct ofbundle *bundle = port->bundle;
1833 bundle_del_port(port);
1834 if (list_is_empty(&bundle->ports)) {
1835 bundle_destroy(bundle);
1836 } else if (list_is_short(&bundle->ports)) {
1837 bond_destroy(bundle->bond);
1838 bundle->bond = NULL;
1844 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
1846 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
1847 struct ofport_dpif *port = port_;
1848 uint8_t ea[ETH_ADDR_LEN];
1851 error = netdev_get_etheraddr(port->up.netdev, ea);
1853 struct ofpbuf packet;
1856 ofpbuf_init(&packet, 0);
1857 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
1859 memcpy(packet_pdu, pdu, pdu_size);
1861 send_packet(port, &packet);
1862 ofpbuf_uninit(&packet);
1864 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
1865 "%s (%s)", port->bundle->name,
1866 netdev_get_name(port->up.netdev), strerror(error));
1871 bundle_send_learning_packets(struct ofbundle *bundle)
1873 struct ofproto_dpif *ofproto = bundle->ofproto;
1874 int error, n_packets, n_errors;
1875 struct mac_entry *e;
1877 error = n_packets = n_errors = 0;
1878 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
1879 if (e->port.p != bundle) {
1880 struct ofpbuf *learning_packet;
1881 struct ofport_dpif *port;
1885 /* The assignment to "port" is unnecessary but makes "grep"ing for
1886 * struct ofport_dpif more effective. */
1887 learning_packet = bond_compose_learning_packet(bundle->bond,
1891 ret = send_packet(port, learning_packet);
1892 ofpbuf_delete(learning_packet);
1902 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1903 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
1904 "packets, last error was: %s",
1905 bundle->name, n_errors, n_packets, strerror(error));
1907 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
1908 bundle->name, n_packets);
1913 bundle_run(struct ofbundle *bundle)
1916 lacp_run(bundle->lacp, send_pdu_cb);
1919 struct ofport_dpif *port;
1921 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1922 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
1925 bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
1926 lacp_status(bundle->lacp));
1927 if (bond_should_send_learning_packets(bundle->bond)) {
1928 bundle_send_learning_packets(bundle);
1934 bundle_wait(struct ofbundle *bundle)
1937 lacp_wait(bundle->lacp);
1940 bond_wait(bundle->bond);
1947 mirror_scan(struct ofproto_dpif *ofproto)
1951 for (idx = 0; idx < MAX_MIRRORS; idx++) {
1952 if (!ofproto->mirrors[idx]) {
1959 static struct ofmirror *
1960 mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
1964 for (i = 0; i < MAX_MIRRORS; i++) {
1965 struct ofmirror *mirror = ofproto->mirrors[i];
1966 if (mirror && mirror->aux == aux) {
1974 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
1976 mirror_update_dups(struct ofproto_dpif *ofproto)
1980 for (i = 0; i < MAX_MIRRORS; i++) {
1981 struct ofmirror *m = ofproto->mirrors[i];
1984 m->dup_mirrors = MIRROR_MASK_C(1) << i;
1988 for (i = 0; i < MAX_MIRRORS; i++) {
1989 struct ofmirror *m1 = ofproto->mirrors[i];
1996 for (j = i + 1; j < MAX_MIRRORS; j++) {
1997 struct ofmirror *m2 = ofproto->mirrors[j];
1999 if (m2 && m1->out == m2->out && m1->out_vlan == m2->out_vlan) {
2000 m1->dup_mirrors |= MIRROR_MASK_C(1) << j;
2001 m2->dup_mirrors |= m1->dup_mirrors;
2008 mirror_set(struct ofproto *ofproto_, void *aux,
2009 const struct ofproto_mirror_settings *s)
2011 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2012 mirror_mask_t mirror_bit;
2013 struct ofbundle *bundle;
2014 struct ofmirror *mirror;
2015 struct ofbundle *out;
2016 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
2017 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
2020 mirror = mirror_lookup(ofproto, aux);
2022 mirror_destroy(mirror);
2028 idx = mirror_scan(ofproto);
2030 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2032 ofproto->up.name, MAX_MIRRORS, s->name);
2036 mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
2037 mirror->ofproto = ofproto;
2040 mirror->out_vlan = -1;
2041 mirror->name = NULL;
2044 if (!mirror->name || strcmp(s->name, mirror->name)) {
2046 mirror->name = xstrdup(s->name);
2049 /* Get the new configuration. */
2050 if (s->out_bundle) {
2051 out = bundle_lookup(ofproto, s->out_bundle);
2053 mirror_destroy(mirror);
2059 out_vlan = s->out_vlan;
2061 bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
2062 bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
2064 /* If the configuration has not changed, do nothing. */
2065 if (hmapx_equals(&srcs, &mirror->srcs)
2066 && hmapx_equals(&dsts, &mirror->dsts)
2067 && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
2068 && mirror->out == out
2069 && mirror->out_vlan == out_vlan)
2071 hmapx_destroy(&srcs);
2072 hmapx_destroy(&dsts);
2076 hmapx_swap(&srcs, &mirror->srcs);
2077 hmapx_destroy(&srcs);
2079 hmapx_swap(&dsts, &mirror->dsts);
2080 hmapx_destroy(&dsts);
2082 free(mirror->vlans);
2083 mirror->vlans = vlan_bitmap_clone(s->src_vlans);
2086 mirror->out_vlan = out_vlan;
2088 /* Update bundles. */
2089 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2090 HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
2091 if (hmapx_contains(&mirror->srcs, bundle)) {
2092 bundle->src_mirrors |= mirror_bit;
2094 bundle->src_mirrors &= ~mirror_bit;
2097 if (hmapx_contains(&mirror->dsts, bundle)) {
2098 bundle->dst_mirrors |= mirror_bit;
2100 bundle->dst_mirrors &= ~mirror_bit;
2103 if (mirror->out == bundle) {
2104 bundle->mirror_out |= mirror_bit;
2106 bundle->mirror_out &= ~mirror_bit;
2110 ofproto->need_revalidate = true;
2111 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2112 mirror_update_dups(ofproto);
2118 mirror_destroy(struct ofmirror *mirror)
2120 struct ofproto_dpif *ofproto;
2121 mirror_mask_t mirror_bit;
2122 struct ofbundle *bundle;
2128 ofproto = mirror->ofproto;
2129 ofproto->need_revalidate = true;
2130 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2132 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2133 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2134 bundle->src_mirrors &= ~mirror_bit;
2135 bundle->dst_mirrors &= ~mirror_bit;
2136 bundle->mirror_out &= ~mirror_bit;
2139 hmapx_destroy(&mirror->srcs);
2140 hmapx_destroy(&mirror->dsts);
2141 free(mirror->vlans);
2143 ofproto->mirrors[mirror->idx] = NULL;
2147 mirror_update_dups(ofproto);
2151 mirror_get_stats(struct ofproto *ofproto_, void *aux,
2152 uint64_t *packets, uint64_t *bytes)
2154 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2155 struct ofmirror *mirror = mirror_lookup(ofproto, aux);
2158 *packets = *bytes = UINT64_MAX;
2162 *packets = mirror->packet_count;
2163 *bytes = mirror->byte_count;
2169 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2171 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2172 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2173 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2179 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2181 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2182 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2183 return bundle && bundle->mirror_out != 0;
2187 forward_bpdu_changed(struct ofproto *ofproto_)
2189 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2190 /* Revalidate cached flows whenever forward_bpdu option changes. */
2191 ofproto->need_revalidate = true;
2195 set_mac_idle_time(struct ofproto *ofproto_, unsigned int idle_time)
2197 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2198 mac_learning_set_idle_time(ofproto->ml, idle_time);
2203 static struct ofport_dpif *
2204 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
2206 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2207 return ofport ? ofport_dpif_cast(ofport) : NULL;
2210 static struct ofport_dpif *
2211 get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
2213 return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
2217 ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
2218 struct dpif_port *dpif_port)
2220 ofproto_port->name = dpif_port->name;
2221 ofproto_port->type = dpif_port->type;
2222 ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
2226 port_run(struct ofport_dpif *ofport)
2228 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2229 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2230 bool enable = netdev_get_carrier(ofport->up.netdev);
2232 ofport->carrier_seq = carrier_seq;
2235 cfm_run(ofport->cfm);
2237 if (cfm_should_send_ccm(ofport->cfm)) {
2238 struct ofpbuf packet;
2240 ofpbuf_init(&packet, 0);
2241 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2242 send_packet(ofport, &packet);
2243 ofpbuf_uninit(&packet);
2246 enable = enable && !cfm_get_fault(ofport->cfm)
2247 && cfm_get_opup(ofport->cfm);
2250 if (ofport->bundle) {
2251 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2252 if (carrier_changed) {
2253 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
2257 if (ofport->may_enable != enable) {
2258 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2260 if (ofproto->has_bundle_action) {
2261 ofproto->need_revalidate = true;
2265 ofport->may_enable = enable;
2269 port_wait(struct ofport_dpif *ofport)
2272 cfm_wait(ofport->cfm);
2277 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2278 struct ofproto_port *ofproto_port)
2280 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2281 struct dpif_port dpif_port;
2284 error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
2286 ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
2292 port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
2294 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2298 error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
2300 *ofp_portp = odp_port_to_ofp_port(odp_port);
2306 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
2308 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2311 error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
2313 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
2315 /* The caller is going to close ofport->up.netdev. If this is a
2316 * bonded port, then the bond is using that netdev, so remove it
2317 * from the bond. The client will need to reconfigure everything
2318 * after deleting ports, so then the slave will get re-added. */
2319 bundle_remove(&ofport->up);
2326 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
2328 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2331 error = netdev_get_stats(ofport->up.netdev, stats);
2333 if (!error && ofport->odp_port == OVSP_LOCAL) {
2334 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2336 /* ofproto->stats.tx_packets represents packets that we created
2337 * internally and sent to some port (e.g. packets sent with
2338 * send_packet()). Account for them as if they had come from
2339 * OFPP_LOCAL and got forwarded. */
2341 if (stats->rx_packets != UINT64_MAX) {
2342 stats->rx_packets += ofproto->stats.tx_packets;
2345 if (stats->rx_bytes != UINT64_MAX) {
2346 stats->rx_bytes += ofproto->stats.tx_bytes;
2349 /* ofproto->stats.rx_packets represents packets that were received on
2350 * some port and we processed internally and dropped (e.g. STP).
2351 * Account fro them as if they had been forwarded to OFPP_LOCAL. */
2353 if (stats->tx_packets != UINT64_MAX) {
2354 stats->tx_packets += ofproto->stats.rx_packets;
2357 if (stats->tx_bytes != UINT64_MAX) {
2358 stats->tx_bytes += ofproto->stats.rx_bytes;
2365 /* Account packets for LOCAL port. */
2367 ofproto_update_local_port_stats(const struct ofproto *ofproto_,
2368 size_t tx_size, size_t rx_size)
2370 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2373 ofproto->stats.rx_packets++;
2374 ofproto->stats.rx_bytes += rx_size;
2377 ofproto->stats.tx_packets++;
2378 ofproto->stats.tx_bytes += tx_size;
2382 struct port_dump_state {
2383 struct dpif_port_dump dump;
2388 port_dump_start(const struct ofproto *ofproto_, void **statep)
2390 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2391 struct port_dump_state *state;
2393 *statep = state = xmalloc(sizeof *state);
2394 dpif_port_dump_start(&state->dump, ofproto->dpif);
2395 state->done = false;
2400 port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
2401 struct ofproto_port *port)
2403 struct port_dump_state *state = state_;
2404 struct dpif_port dpif_port;
2406 if (dpif_port_dump_next(&state->dump, &dpif_port)) {
2407 ofproto_port_from_dpif_port(port, &dpif_port);
2410 int error = dpif_port_dump_done(&state->dump);
2412 return error ? error : EOF;
2417 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
2419 struct port_dump_state *state = state_;
2422 dpif_port_dump_done(&state->dump);
2429 port_poll(const struct ofproto *ofproto_, char **devnamep)
2431 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2432 return dpif_port_poll(ofproto->dpif, devnamep);
2436 port_poll_wait(const struct ofproto *ofproto_)
2438 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2439 dpif_port_poll_wait(ofproto->dpif);
2443 port_is_lacp_current(const struct ofport *ofport_)
2445 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2446 return (ofport->bundle && ofport->bundle->lacp
2447 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
2451 /* Upcall handling. */
2453 /* Flow miss batching.
2455 * Some dpifs implement operations faster when you hand them off in a batch.
2456 * To allow batching, "struct flow_miss" queues the dpif-related work needed
2457 * for a given flow. Each "struct flow_miss" corresponds to sending one or
2458 * more packets, plus possibly installing the flow in the dpif.
2460 * So far we only batch the operations that affect flow setup time the most.
2461 * It's possible to batch more than that, but the benefit might be minimal. */
2463 struct hmap_node hmap_node;
2465 enum odp_key_fitness key_fitness;
2466 const struct nlattr *key;
2468 ovs_be16 initial_tci;
2469 struct list packets;
2472 struct flow_miss_op {
2473 struct dpif_op dpif_op;
2474 struct subfacet *subfacet;
2477 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
2478 * OpenFlow controller as necessary according to their individual
2479 * configurations. */
2481 send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
2482 const struct flow *flow)
2484 struct ofputil_packet_in pin;
2486 pin.packet = packet->data;
2487 pin.packet_len = packet->size;
2488 pin.reason = OFPR_NO_MATCH;
2489 pin.controller_id = 0;
2494 pin.send_len = 0; /* not used for flow table misses */
2496 flow_get_metadata(flow, &pin.fmd);
2498 /* Registers aren't meaningful on a miss. */
2499 memset(pin.fmd.reg_masks, 0, sizeof pin.fmd.reg_masks);
2501 connmgr_send_packet_in(ofproto->up.connmgr, &pin);
2505 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
2506 const struct ofpbuf *packet)
2508 struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
2514 if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
2516 cfm_process_heartbeat(ofport->cfm, packet);
2519 } else if (ofport->bundle && ofport->bundle->lacp
2520 && flow->dl_type == htons(ETH_TYPE_LACP)) {
2522 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
2525 } else if (ofproto->stp && stp_should_process_flow(flow)) {
2527 stp_process_packet(ofport, packet);
2534 static struct flow_miss *
2535 flow_miss_create(struct hmap *todo, const struct flow *flow,
2536 enum odp_key_fitness key_fitness,
2537 const struct nlattr *key, size_t key_len,
2538 ovs_be16 initial_tci)
2540 uint32_t hash = flow_hash(flow, 0);
2541 struct flow_miss *miss;
2543 HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
2544 if (flow_equal(&miss->flow, flow)) {
2549 miss = xmalloc(sizeof *miss);
2550 hmap_insert(todo, &miss->hmap_node, hash);
2552 miss->key_fitness = key_fitness;
2554 miss->key_len = key_len;
2555 miss->initial_tci = initial_tci;
2556 list_init(&miss->packets);
2561 handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
2562 struct flow_miss_op *ops, size_t *n_ops)
2564 const struct flow *flow = &miss->flow;
2565 struct ofpbuf *packet, *next_packet;
2566 struct subfacet *subfacet;
2567 struct facet *facet;
2569 facet = facet_lookup_valid(ofproto, flow);
2571 struct rule_dpif *rule;
2573 rule = rule_dpif_lookup(ofproto, flow, 0);
2575 /* Don't send a packet-in if OFPUTIL_PC_NO_PACKET_IN asserted. */
2576 struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
2578 if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
2579 COVERAGE_INC(ofproto_dpif_no_packet_in);
2580 /* XXX install 'drop' flow entry */
2584 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
2588 LIST_FOR_EACH (packet, list_node, &miss->packets) {
2589 send_packet_in_miss(ofproto, packet, flow);
2595 facet = facet_create(rule, flow);
2598 subfacet = subfacet_create(facet,
2599 miss->key_fitness, miss->key, miss->key_len,
2602 LIST_FOR_EACH_SAFE (packet, next_packet, list_node, &miss->packets) {
2603 struct dpif_flow_stats stats;
2604 struct flow_miss_op *op;
2605 struct dpif_execute *execute;
2607 ofproto->n_matches++;
2609 if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
2611 * Extra-special case for fail-open mode.
2613 * We are in fail-open mode and the packet matched the fail-open
2614 * rule, but we are connected to a controller too. We should send
2615 * the packet up to the controller in the hope that it will try to
2616 * set up a flow and thereby allow us to exit fail-open.
2618 * See the top-level comment in fail-open.c for more information.
2620 send_packet_in_miss(ofproto, packet, flow);
2623 if (!facet->may_install || !subfacet->actions) {
2624 subfacet_make_actions(subfacet, packet);
2627 dpif_flow_stats_extract(&facet->flow, packet, &stats);
2628 subfacet_update_stats(subfacet, &stats);
2630 if (!subfacet->actions_len) {
2631 /* No actions to execute, so skip talking to the dpif. */
2635 if (flow->vlan_tci != subfacet->initial_tci) {
2636 /* This packet was received on a VLAN splinter port. We added
2637 * a VLAN to the packet to make the packet resemble the flow,
2638 * but the actions were composed assuming that the packet
2639 * contained no VLAN. So, we must remove the VLAN header from
2640 * the packet before trying to execute the actions. */
2641 eth_pop_vlan(packet);
2644 op = &ops[(*n_ops)++];
2645 execute = &op->dpif_op.u.execute;
2646 op->subfacet = subfacet;
2647 op->dpif_op.type = DPIF_OP_EXECUTE;
2648 execute->key = miss->key;
2649 execute->key_len = miss->key_len;
2650 execute->actions = (facet->may_install
2652 : xmemdup(subfacet->actions,
2653 subfacet->actions_len));
2654 execute->actions_len = subfacet->actions_len;
2655 execute->packet = packet;
2658 if (facet->may_install && subfacet->key_fitness != ODP_FIT_TOO_LITTLE) {
2659 struct flow_miss_op *op = &ops[(*n_ops)++];
2660 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
2662 op->subfacet = subfacet;
2663 op->dpif_op.type = DPIF_OP_FLOW_PUT;
2664 put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
2665 put->key = miss->key;
2666 put->key_len = miss->key_len;
2667 put->actions = subfacet->actions;
2668 put->actions_len = subfacet->actions_len;
2673 /* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
2674 * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
2675 * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
2676 * what a flow key should contain.
2678 * This function also includes some logic to help make VLAN splinters
2679 * transparent to the rest of the upcall processing logic. In particular, if
2680 * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
2681 * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
2682 * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
2684 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
2685 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
2686 * (This differs from the value returned in flow->vlan_tci only for packets
2687 * received on VLAN splinters.)
2689 static enum odp_key_fitness
2690 ofproto_dpif_extract_flow_key(const struct ofproto_dpif *ofproto,
2691 const struct nlattr *key, size_t key_len,
2692 struct flow *flow, ovs_be16 *initial_tci,
2693 struct ofpbuf *packet)
2695 enum odp_key_fitness fitness;
2699 fitness = odp_flow_key_to_flow(key, key_len, flow);
2700 if (fitness == ODP_FIT_ERROR) {
2703 *initial_tci = flow->vlan_tci;
2705 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
2707 /* Cause the flow to be processed as if it came in on the real device
2708 * with the VLAN device's VLAN ID. */
2709 flow->in_port = realdev;
2710 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
2712 /* Make the packet resemble the flow, so that it gets sent to an
2713 * OpenFlow controller properly, so that it looks correct for
2714 * sFlow, and so that flow_extract() will get the correct vlan_tci
2715 * if it is called on 'packet'.
2717 * The allocated space inside 'packet' probably also contains
2718 * 'key', that is, both 'packet' and 'key' are probably part of a
2719 * struct dpif_upcall (see the large comment on that structure
2720 * definition), so pushing data on 'packet' is in general not a
2721 * good idea since it could overwrite 'key' or free it as a side
2722 * effect. However, it's OK in this special case because we know
2723 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
2724 * will just overwrite the 4-byte "struct nlattr", which is fine
2725 * since we don't need that header anymore. */
2726 eth_push_vlan(packet, flow->vlan_tci);
2729 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
2730 if (fitness == ODP_FIT_PERFECT) {
2731 fitness = ODP_FIT_TOO_MUCH;
2739 handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
2742 struct dpif_upcall *upcall;
2743 struct flow_miss *miss, *next_miss;
2744 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
2745 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
2754 /* Construct the to-do list.
2756 * This just amounts to extracting the flow from each packet and sticking
2757 * the packets that have the same flow in the same "flow_miss" structure so
2758 * that we can process them together. */
2760 for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
2761 enum odp_key_fitness fitness;
2762 struct flow_miss *miss;
2763 ovs_be16 initial_tci;
2766 /* Obtain metadata and check userspace/kernel agreement on flow match,
2767 * then set 'flow''s header pointers. */
2768 fitness = ofproto_dpif_extract_flow_key(ofproto,
2769 upcall->key, upcall->key_len,
2770 &flow, &initial_tci,
2772 if (fitness == ODP_FIT_ERROR) {
2773 ofpbuf_delete(upcall->packet);
2776 flow_extract(upcall->packet, flow.skb_priority, flow.tun_id,
2777 flow.in_port, &flow);
2779 /* Handle 802.1ag, LACP, and STP specially. */
2780 if (process_special(ofproto, &flow, upcall->packet)) {
2781 ofproto_update_local_port_stats(&ofproto->up,
2782 0, upcall->packet->size);
2783 ofpbuf_delete(upcall->packet);
2784 ofproto->n_matches++;
2788 /* Add other packets to a to-do list. */
2789 miss = flow_miss_create(&todo, &flow, fitness,
2790 upcall->key, upcall->key_len, initial_tci);
2791 list_push_back(&miss->packets, &upcall->packet->list_node);
2794 /* Process each element in the to-do list, constructing the set of
2795 * operations to batch. */
2797 HMAP_FOR_EACH (miss, hmap_node, &todo) {
2798 handle_flow_miss(ofproto, miss, flow_miss_ops, &n_ops);
2800 assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
2802 /* Execute batch. */
2803 for (i = 0; i < n_ops; i++) {
2804 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
2806 dpif_operate(ofproto->dpif, dpif_ops, n_ops);
2808 /* Free memory and update facets. */
2809 for (i = 0; i < n_ops; i++) {
2810 struct flow_miss_op *op = &flow_miss_ops[i];
2811 struct dpif_execute *execute;
2813 switch (op->dpif_op.type) {
2814 case DPIF_OP_EXECUTE:
2815 execute = &op->dpif_op.u.execute;
2816 if (op->subfacet->actions != execute->actions) {
2817 free((struct nlattr *) execute->actions);
2821 case DPIF_OP_FLOW_PUT:
2822 if (!op->dpif_op.error) {
2823 op->subfacet->installed = true;
2828 HMAP_FOR_EACH_SAFE (miss, next_miss, hmap_node, &todo) {
2829 ofpbuf_list_delete(&miss->packets);
2830 hmap_remove(&todo, &miss->hmap_node);
2833 hmap_destroy(&todo);
2837 handle_userspace_upcall(struct ofproto_dpif *ofproto,
2838 struct dpif_upcall *upcall)
2840 struct user_action_cookie cookie;
2841 enum odp_key_fitness fitness;
2842 ovs_be16 initial_tci;
2845 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
2847 fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
2848 upcall->key_len, &flow,
2849 &initial_tci, upcall->packet);
2850 if (fitness == ODP_FIT_ERROR) {
2851 ofpbuf_delete(upcall->packet);
2855 if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
2856 if (ofproto->sflow) {
2857 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
2861 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
2863 ofpbuf_delete(upcall->packet);
2867 handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
2869 struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
2873 assert (max_batch <= FLOW_MISS_MAX_BATCH);
2876 for (i = 0; i < max_batch; i++) {
2877 struct dpif_upcall *upcall = &misses[n_misses];
2880 error = dpif_recv(ofproto->dpif, upcall);
2885 switch (upcall->type) {
2886 case DPIF_UC_ACTION:
2887 handle_userspace_upcall(ofproto, upcall);
2891 /* Handle it later. */
2895 case DPIF_N_UC_TYPES:
2897 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
2903 handle_miss_upcalls(ofproto, misses, n_misses);
2908 /* Flow expiration. */
2910 static int subfacet_max_idle(const struct ofproto_dpif *);
2911 static void update_stats(struct ofproto_dpif *);
2912 static void rule_expire(struct rule_dpif *);
2913 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
2915 /* This function is called periodically by run(). Its job is to collect
2916 * updates for the flows that have been installed into the datapath, most
2917 * importantly when they last were used, and then use that information to
2918 * expire flows that have not been used recently.
2920 * Returns the number of milliseconds after which it should be called again. */
2922 expire(struct ofproto_dpif *ofproto)
2924 struct rule_dpif *rule, *next_rule;
2925 struct oftable *table;
2928 /* Update stats for each flow in the datapath. */
2929 update_stats(ofproto);
2931 /* Expire subfacets that have been idle too long. */
2932 dp_max_idle = subfacet_max_idle(ofproto);
2933 expire_subfacets(ofproto, dp_max_idle);
2935 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
2936 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
2937 struct cls_cursor cursor;
2939 cls_cursor_init(&cursor, &table->cls, NULL);
2940 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
2945 /* All outstanding data in existing flows has been accounted, so it's a
2946 * good time to do bond rebalancing. */
2947 if (ofproto->has_bonded_bundles) {
2948 struct ofbundle *bundle;
2950 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2952 bond_rebalance(bundle->bond, &ofproto->revalidate_set);
2957 return MIN(dp_max_idle, 1000);
2960 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
2962 * This function also pushes statistics updates to rules which each facet
2963 * resubmits into. Generally these statistics will be accurate. However, if a
2964 * facet changes the rule it resubmits into at some time in between
2965 * update_stats() runs, it is possible that statistics accrued to the
2966 * old rule will be incorrectly attributed to the new rule. This could be
2967 * avoided by calling update_stats() whenever rules are created or
2968 * deleted. However, the performance impact of making so many calls to the
2969 * datapath do not justify the benefit of having perfectly accurate statistics.
2972 update_stats(struct ofproto_dpif *p)
2974 const struct dpif_flow_stats *stats;
2975 struct dpif_flow_dump dump;
2976 const struct nlattr *key;
2979 dpif_flow_dump_start(&dump, p->dpif);
2980 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
2981 struct subfacet *subfacet;
2983 subfacet = subfacet_find(p, key, key_len);
2984 if (subfacet && subfacet->installed) {
2985 struct facet *facet = subfacet->facet;
2987 if (stats->n_packets >= subfacet->dp_packet_count) {
2988 uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
2989 facet->packet_count += extra;
2991 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
2994 if (stats->n_bytes >= subfacet->dp_byte_count) {
2995 facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
2997 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
3000 subfacet->dp_packet_count = stats->n_packets;
3001 subfacet->dp_byte_count = stats->n_bytes;
3003 facet->tcp_flags |= stats->tcp_flags;
3005 subfacet_update_time(subfacet, stats->used);
3006 facet_account(facet, true);
3007 facet_push_stats(facet);
3009 if (!VLOG_DROP_WARN(&rl)) {
3013 odp_flow_key_format(key, key_len, &s);
3014 VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
3018 COVERAGE_INC(facet_unexpected);
3019 /* There's a flow in the datapath that we know nothing about, or a
3020 * flow that shouldn't be installed but was anyway. Delete it. */
3021 dpif_flow_del(p->dpif, key, key_len, NULL);
3024 dpif_flow_dump_done(&dump);
3027 /* Calculates and returns the number of milliseconds of idle time after which
3028 * subfacets should expire from the datapath. When a subfacet expires, we fold
3029 * its statistics into its facet, and when a facet's last subfacet expires, we
3030 * fold its statistic into its rule. */
3032 subfacet_max_idle(const struct ofproto_dpif *ofproto)
3035 * Idle time histogram.
3037 * Most of the time a switch has a relatively small number of subfacets.
3038 * When this is the case we might as well keep statistics for all of them
3039 * in userspace and to cache them in the kernel datapath for performance as
3042 * As the number of subfacets increases, the memory required to maintain
3043 * statistics about them in userspace and in the kernel becomes
3044 * significant. However, with a large number of subfacets it is likely
3045 * that only a few of them are "heavy hitters" that consume a large amount
3046 * of bandwidth. At this point, only heavy hitters are worth caching in
3047 * the kernel and maintaining in userspaces; other subfacets we can
3050 * The technique used to compute the idle time is to build a histogram with
3051 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3052 * that is installed in the kernel gets dropped in the appropriate bucket.
3053 * After the histogram has been built, we compute the cutoff so that only
3054 * the most-recently-used 1% of subfacets (but at least
3055 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3056 * the most-recently-used bucket of subfacets is kept, so actually an
3057 * arbitrary number of subfacets can be kept in any given expiration run
3058 * (though the next run will delete most of those unless they receive
3061 * This requires a second pass through the subfacets, in addition to the
3062 * pass made by update_stats(), because the former function never looks at
3063 * uninstallable subfacets.
3065 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3066 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3067 int buckets[N_BUCKETS] = { 0 };
3068 int total, subtotal, bucket;
3069 struct subfacet *subfacet;
3073 total = hmap_count(&ofproto->subfacets);
3074 if (total <= ofproto->up.flow_eviction_threshold) {
3075 return N_BUCKETS * BUCKET_WIDTH;
3078 /* Build histogram. */
3080 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
3081 long long int idle = now - subfacet->used;
3082 int bucket = (idle <= 0 ? 0
3083 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3084 : (unsigned int) idle / BUCKET_WIDTH);
3088 /* Find the first bucket whose flows should be expired. */
3089 subtotal = bucket = 0;
3091 subtotal += buckets[bucket++];
3092 } while (bucket < N_BUCKETS &&
3093 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
3095 if (VLOG_IS_DBG_ENABLED()) {
3099 ds_put_cstr(&s, "keep");
3100 for (i = 0; i < N_BUCKETS; i++) {
3102 ds_put_cstr(&s, ", drop");
3105 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3108 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
3112 return bucket * BUCKET_WIDTH;
3116 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
3118 long long int cutoff = time_msec() - dp_max_idle;
3119 struct subfacet *subfacet, *next_subfacet;
3121 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3122 &ofproto->subfacets) {
3123 if (subfacet->used < cutoff) {
3124 subfacet_destroy(subfacet);
3129 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3130 * then delete it entirely. */
3132 rule_expire(struct rule_dpif *rule)
3134 struct facet *facet, *next_facet;
3138 /* Has 'rule' expired? */
3140 if (rule->up.hard_timeout
3141 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
3142 reason = OFPRR_HARD_TIMEOUT;
3143 } else if (rule->up.idle_timeout
3144 && now > rule->up.used + rule->up.idle_timeout * 1000) {
3145 reason = OFPRR_IDLE_TIMEOUT;
3150 COVERAGE_INC(ofproto_dpif_expired);
3152 /* Update stats. (This is a no-op if the rule expired due to an idle
3153 * timeout, because that only happens when the rule has no facets left.) */
3154 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
3155 facet_remove(facet);
3158 /* Get rid of the rule. */
3159 ofproto_rule_expire(&rule->up, reason);
3164 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
3166 * The caller must already have determined that no facet with an identical
3167 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
3168 * the ofproto's classifier table.
3170 * The facet will initially have no subfacets. The caller should create (at
3171 * least) one subfacet with subfacet_create(). */
3172 static struct facet *
3173 facet_create(struct rule_dpif *rule, const struct flow *flow)
3175 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3176 struct facet *facet;
3178 facet = xzalloc(sizeof *facet);
3179 facet->used = time_msec();
3180 hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
3181 list_push_back(&rule->facets, &facet->list_node);
3183 facet->flow = *flow;
3184 list_init(&facet->subfacets);
3185 netflow_flow_init(&facet->nf_flow);
3186 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3192 facet_free(struct facet *facet)
3197 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
3198 * 'packet', which arrived on 'in_port'.
3200 * Takes ownership of 'packet'. */
3202 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
3203 const struct nlattr *odp_actions, size_t actions_len,
3204 struct ofpbuf *packet)
3206 struct odputil_keybuf keybuf;
3210 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
3211 odp_flow_key_from_flow(&key, flow);
3213 error = dpif_execute(ofproto->dpif, key.data, key.size,
3214 odp_actions, actions_len, packet);
3216 ofpbuf_delete(packet);
3220 /* Remove 'facet' from 'ofproto' and free up the associated memory:
3222 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3223 * rule's statistics, via subfacet_uninstall().
3225 * - Removes 'facet' from its rule and from ofproto->facets.
3228 facet_remove(struct facet *facet)
3230 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3231 struct subfacet *subfacet, *next_subfacet;
3233 assert(!list_is_empty(&facet->subfacets));
3235 /* First uninstall all of the subfacets to get final statistics. */
3236 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3237 subfacet_uninstall(subfacet);
3240 /* Flush the final stats to the rule.
3242 * This might require us to have at least one subfacet around so that we
3243 * can use its actions for accounting in facet_account(), which is why we
3244 * have uninstalled but not yet destroyed the subfacets. */
3245 facet_flush_stats(facet);
3247 /* Now we're really all done so destroy everything. */
3248 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
3249 &facet->subfacets) {
3250 subfacet_destroy__(subfacet);
3252 hmap_remove(&ofproto->facets, &facet->hmap_node);
3253 list_remove(&facet->list_node);
3258 facet_account(struct facet *facet, bool may_flow_mod)
3260 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3262 struct subfacet *subfacet;
3263 const struct nlattr *a;
3267 if (facet->byte_count <= facet->accounted_bytes) {
3270 n_bytes = facet->byte_count - facet->accounted_bytes;
3271 facet->accounted_bytes = facet->byte_count;
3273 /* Feed information from the active flows back into the learning table to
3274 * ensure that table is always in sync with what is actually flowing
3275 * through the datapath. */
3276 if (facet->has_learn || facet->has_normal
3277 || (facet->has_fin_timeout
3278 && facet->tcp_flags & (TCP_FIN | TCP_RST))) {
3279 struct action_xlate_ctx ctx;
3281 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3282 facet->flow.vlan_tci,
3283 facet->rule, facet->tcp_flags, NULL);
3284 ctx.may_learn_macs = true;
3285 ctx.may_flow_mod = may_flow_mod;
3286 ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
3287 facet->rule->up.n_actions));
3290 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
3294 /* This loop feeds byte counters to bond_account() for rebalancing to use
3295 * as a basis. We also need to track the actual VLAN on which the packet
3296 * is going to be sent to ensure that it matches the one passed to
3297 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3300 * We use the actions from an arbitrary subfacet because they should all
3301 * be equally valid for our purpose. */
3302 subfacet = CONTAINER_OF(list_front(&facet->subfacets),
3303 struct subfacet, list_node);
3304 vlan_tci = facet->flow.vlan_tci;
3305 NL_ATTR_FOR_EACH_UNSAFE (a, left,
3306 subfacet->actions, subfacet->actions_len) {
3307 const struct ovs_action_push_vlan *vlan;
3308 struct ofport_dpif *port;
3310 switch (nl_attr_type(a)) {
3311 case OVS_ACTION_ATTR_OUTPUT:
3312 port = get_odp_port(ofproto, nl_attr_get_u32(a));
3313 if (port && port->bundle && port->bundle->bond) {
3314 bond_account(port->bundle->bond, &facet->flow,
3315 vlan_tci_to_vid(vlan_tci), n_bytes);
3319 case OVS_ACTION_ATTR_POP_VLAN:
3320 vlan_tci = htons(0);
3323 case OVS_ACTION_ATTR_PUSH_VLAN:
3324 vlan = nl_attr_get(a);
3325 vlan_tci = vlan->vlan_tci;
3331 /* Returns true if the only action for 'facet' is to send to the controller.
3332 * (We don't report NetFlow expiration messages for such facets because they
3333 * are just part of the control logic for the network, not real traffic). */
3335 facet_is_controller_flow(struct facet *facet)
3338 && facet->rule->up.n_actions == 1
3339 && action_outputs_to_port(&facet->rule->up.actions[0],
3340 htons(OFPP_CONTROLLER)));
3343 /* Folds all of 'facet''s statistics into its rule. Also updates the
3344 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
3345 * 'facet''s statistics in the datapath should have been zeroed and folded into
3346 * its packet and byte counts before this function is called. */
3348 facet_flush_stats(struct facet *facet)
3350 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3351 struct subfacet *subfacet;
3353 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3354 assert(!subfacet->dp_byte_count);
3355 assert(!subfacet->dp_packet_count);
3358 facet_push_stats(facet);
3359 facet_account(facet, false);
3361 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
3362 struct ofexpired expired;
3363 expired.flow = facet->flow;
3364 expired.packet_count = facet->packet_count;
3365 expired.byte_count = facet->byte_count;
3366 expired.used = facet->used;
3367 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
3370 facet->rule->packet_count += facet->packet_count;
3371 facet->rule->byte_count += facet->byte_count;
3373 /* Reset counters to prevent double counting if 'facet' ever gets
3375 facet_reset_counters(facet);
3377 netflow_flow_clear(&facet->nf_flow);
3378 facet->tcp_flags = 0;
3381 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3382 * Returns it if found, otherwise a null pointer.
3384 * The returned facet might need revalidation; use facet_lookup_valid()
3385 * instead if that is important. */
3386 static struct facet *
3387 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
3389 struct facet *facet;
3391 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
3393 if (flow_equal(flow, &facet->flow)) {
3401 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3402 * Returns it if found, otherwise a null pointer.
3404 * The returned facet is guaranteed to be valid. */
3405 static struct facet *
3406 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
3408 struct facet *facet = facet_find(ofproto, flow);
3410 /* The facet we found might not be valid, since we could be in need of
3411 * revalidation. If it is not valid, don't return it. */
3413 && (ofproto->need_revalidate
3414 || tag_set_intersects(&ofproto->revalidate_set, facet->tags))
3415 && !facet_revalidate(facet)) {
3416 COVERAGE_INC(facet_invalidated);
3424 facet_check_consistency(struct facet *facet)
3426 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3428 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3430 struct rule_dpif *rule;
3431 struct subfacet *subfacet;
3432 bool may_log = false;
3435 /* Check the rule for consistency. */
3436 rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3438 if (!VLOG_DROP_WARN(&rl)) {
3439 char *s = flow_to_string(&facet->flow);
3440 VLOG_WARN("%s: facet should not exist", s);
3444 } else if (rule != facet->rule) {
3445 may_log = !VLOG_DROP_WARN(&rl);
3451 flow_format(&s, &facet->flow);
3452 ds_put_format(&s, ": facet associated with wrong rule (was "
3453 "table=%"PRIu8",", facet->rule->up.table_id);
3454 cls_rule_format(&facet->rule->up.cr, &s);
3455 ds_put_format(&s, ") (should have been table=%"PRIu8",",
3457 cls_rule_format(&rule->up.cr, &s);
3458 ds_put_char(&s, ')');
3460 VLOG_WARN("%s", ds_cstr(&s));
3467 /* Check the datapath actions for consistency. */
3468 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3469 struct action_xlate_ctx ctx;
3470 struct ofpbuf *odp_actions;
3471 bool actions_changed;
3472 bool should_install;
3474 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3475 subfacet->initial_tci, rule, 0, NULL);
3476 odp_actions = xlate_actions(&ctx, rule->up.actions,
3477 rule->up.n_actions);
3479 should_install = (ctx.may_set_up_flow
3480 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3481 if (!should_install && !subfacet->installed) {
3482 /* The actions for uninstallable flows may vary from one packet to
3483 * the next, so don't compare the actions. */
3487 actions_changed = (subfacet->actions_len != odp_actions->size
3488 || memcmp(subfacet->actions, odp_actions->data,
3489 subfacet->actions_len));
3490 if (should_install != subfacet->installed || actions_changed) {
3492 may_log = !VLOG_DROP_WARN(&rl);
3497 struct odputil_keybuf keybuf;
3502 subfacet_get_key(subfacet, &keybuf, &key);
3503 odp_flow_key_format(key.data, key.size, &s);
3505 ds_put_cstr(&s, ": inconsistency in subfacet");
3506 if (should_install != subfacet->installed) {
3507 enum odp_key_fitness fitness = subfacet->key_fitness;
3509 ds_put_format(&s, " (should%s have been installed)",
3510 should_install ? "" : " not");
3511 ds_put_format(&s, " (may_set_up_flow=%s, fitness=%s)",
3512 ctx.may_set_up_flow ? "true" : "false",
3513 odp_key_fitness_to_string(fitness));
3515 if (actions_changed) {
3516 ds_put_cstr(&s, " (actions were: ");
3517 format_odp_actions(&s, subfacet->actions,
3518 subfacet->actions_len);
3519 ds_put_cstr(&s, ") (correct actions: ");
3520 format_odp_actions(&s, odp_actions->data,
3522 ds_put_char(&s, ')');
3524 ds_put_cstr(&s, " (actions: ");
3525 format_odp_actions(&s, subfacet->actions,
3526 subfacet->actions_len);
3527 ds_put_char(&s, ')');
3529 VLOG_WARN("%s", ds_cstr(&s));
3535 ofpbuf_delete(odp_actions);
3541 /* Re-searches the classifier for 'facet':
3543 * - If the rule found is different from 'facet''s current rule, moves
3544 * 'facet' to the new rule and recompiles its actions.
3546 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
3547 * where it is and recompiles its actions anyway.
3549 * - If there is none, destroys 'facet'.
3551 * Returns true if 'facet' still exists, false if it has been destroyed. */
3553 facet_revalidate(struct facet *facet)
3555 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3557 struct nlattr *odp_actions;
3560 struct actions *new_actions;
3562 struct action_xlate_ctx ctx;
3563 struct rule_dpif *new_rule;
3564 struct subfacet *subfacet;
3565 bool actions_changed;
3568 COVERAGE_INC(facet_revalidate);
3570 /* Determine the new rule. */
3571 new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3573 /* No new rule, so delete the facet. */
3574 facet_remove(facet);
3578 /* Calculate new datapath actions.
3580 * We do not modify any 'facet' state yet, because we might need to, e.g.,
3581 * emit a NetFlow expiration and, if so, we need to have the old state
3582 * around to properly compose it. */
3584 /* If the datapath actions changed or the installability changed,
3585 * then we need to talk to the datapath. */
3588 memset(&ctx, 0, sizeof ctx);
3589 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3590 struct ofpbuf *odp_actions;
3591 bool should_install;
3593 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3594 subfacet->initial_tci, new_rule, 0, NULL);
3595 odp_actions = xlate_actions(&ctx, new_rule->up.actions,
3596 new_rule->up.n_actions);
3597 actions_changed = (subfacet->actions_len != odp_actions->size
3598 || memcmp(subfacet->actions, odp_actions->data,
3599 subfacet->actions_len));
3601 should_install = (ctx.may_set_up_flow
3602 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3603 if (actions_changed || should_install != subfacet->installed) {
3604 if (should_install) {
3605 struct dpif_flow_stats stats;
3607 subfacet_install(subfacet,
3608 odp_actions->data, odp_actions->size, &stats);
3609 subfacet_update_stats(subfacet, &stats);
3611 subfacet_uninstall(subfacet);
3615 new_actions = xcalloc(list_size(&facet->subfacets),
3616 sizeof *new_actions);
3618 new_actions[i].odp_actions = xmemdup(odp_actions->data,
3620 new_actions[i].actions_len = odp_actions->size;
3623 ofpbuf_delete(odp_actions);
3627 facet_flush_stats(facet);
3630 /* Update 'facet' now that we've taken care of all the old state. */
3631 facet->tags = ctx.tags;
3632 facet->nf_flow.output_iface = ctx.nf_output_iface;
3633 facet->may_install = ctx.may_set_up_flow;
3634 facet->has_learn = ctx.has_learn;
3635 facet->has_normal = ctx.has_normal;
3636 facet->has_fin_timeout = ctx.has_fin_timeout;
3637 facet->mirrors = ctx.mirrors;
3640 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3641 if (new_actions[i].odp_actions) {
3642 free(subfacet->actions);
3643 subfacet->actions = new_actions[i].odp_actions;
3644 subfacet->actions_len = new_actions[i].actions_len;
3650 if (facet->rule != new_rule) {
3651 COVERAGE_INC(facet_changed_rule);
3652 list_remove(&facet->list_node);
3653 list_push_back(&new_rule->facets, &facet->list_node);
3654 facet->rule = new_rule;
3655 facet->used = new_rule->up.created;
3656 facet->prev_used = facet->used;
3662 /* Updates 'facet''s used time. Caller is responsible for calling
3663 * facet_push_stats() to update the flows which 'facet' resubmits into. */
3665 facet_update_time(struct facet *facet, long long int used)
3667 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3668 if (used > facet->used) {
3670 ofproto_rule_update_used(&facet->rule->up, used);
3671 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
3676 facet_reset_counters(struct facet *facet)
3678 facet->packet_count = 0;
3679 facet->byte_count = 0;
3680 facet->prev_packet_count = 0;
3681 facet->prev_byte_count = 0;
3682 facet->accounted_bytes = 0;
3686 facet_push_stats(struct facet *facet)
3688 uint64_t new_packets, new_bytes;
3690 assert(facet->packet_count >= facet->prev_packet_count);
3691 assert(facet->byte_count >= facet->prev_byte_count);
3692 assert(facet->used >= facet->prev_used);
3694 new_packets = facet->packet_count - facet->prev_packet_count;
3695 new_bytes = facet->byte_count - facet->prev_byte_count;
3697 if (new_packets || new_bytes || facet->used > facet->prev_used) {
3698 facet->prev_packet_count = facet->packet_count;
3699 facet->prev_byte_count = facet->byte_count;
3700 facet->prev_used = facet->used;
3702 flow_push_stats(facet->rule, &facet->flow,
3703 new_packets, new_bytes, facet->used);
3705 update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
3706 facet->mirrors, new_packets, new_bytes);
3710 struct ofproto_push {
3711 struct action_xlate_ctx ctx;
3718 push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
3720 struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
3723 rule->packet_count += push->packets;
3724 rule->byte_count += push->bytes;
3725 ofproto_rule_update_used(&rule->up, push->used);
3729 /* Pushes flow statistics to the rules which 'flow' resubmits into given
3730 * 'rule''s actions and mirrors. */
3732 flow_push_stats(struct rule_dpif *rule,
3733 const struct flow *flow, uint64_t packets, uint64_t bytes,
3736 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3737 struct ofproto_push push;
3739 push.packets = packets;
3743 ofproto_rule_update_used(&rule->up, used);
3745 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, rule,
3747 push.ctx.resubmit_hook = push_resubmit;
3748 ofpbuf_delete(xlate_actions(&push.ctx,
3749 rule->up.actions, rule->up.n_actions));
3754 static struct subfacet *
3755 subfacet_find__(struct ofproto_dpif *ofproto,
3756 const struct nlattr *key, size_t key_len, uint32_t key_hash,
3757 const struct flow *flow)
3759 struct subfacet *subfacet;
3761 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
3762 &ofproto->subfacets) {
3764 ? (subfacet->key_len == key_len
3765 && !memcmp(key, subfacet->key, key_len))
3766 : flow_equal(flow, &subfacet->facet->flow)) {
3774 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
3775 * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if
3776 * there is one, otherwise creates and returns a new subfacet.
3778 * If the returned subfacet is new, then subfacet->actions will be NULL, in
3779 * which case the caller must populate the actions with
3780 * subfacet_make_actions(). */
3781 static struct subfacet *
3782 subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
3783 const struct nlattr *key, size_t key_len, ovs_be16 initial_tci)
3785 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3786 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3787 struct subfacet *subfacet;
3789 subfacet = subfacet_find__(ofproto, key, key_len, key_hash, &facet->flow);
3791 if (subfacet->facet == facet) {
3795 /* This shouldn't happen. */
3796 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
3797 subfacet_destroy(subfacet);
3800 subfacet = xzalloc(sizeof *subfacet);
3801 hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
3802 list_push_back(&facet->subfacets, &subfacet->list_node);
3803 subfacet->facet = facet;
3804 subfacet->used = time_msec();
3805 subfacet->key_fitness = key_fitness;
3806 if (key_fitness != ODP_FIT_PERFECT) {
3807 subfacet->key = xmemdup(key, key_len);
3808 subfacet->key_len = key_len;
3810 subfacet->installed = false;
3811 subfacet->initial_tci = initial_tci;
3816 /* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
3817 * 'flow'. Returns the subfacet if one exists, otherwise NULL. */
3818 static struct subfacet *
3819 subfacet_find(struct ofproto_dpif *ofproto,
3820 const struct nlattr *key, size_t key_len)
3822 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3823 enum odp_key_fitness fitness;
3826 fitness = odp_flow_key_to_flow(key, key_len, &flow);
3827 if (fitness == ODP_FIT_ERROR) {
3831 return subfacet_find__(ofproto, key, key_len, key_hash, &flow);
3834 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
3835 * its facet within 'ofproto', and frees it. */
3837 subfacet_destroy__(struct subfacet *subfacet)
3839 struct facet *facet = subfacet->facet;
3840 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3842 subfacet_uninstall(subfacet);
3843 hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
3844 list_remove(&subfacet->list_node);
3845 free(subfacet->key);
3846 free(subfacet->actions);
3850 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
3851 * last remaining subfacet in its facet destroys the facet too. */
3853 subfacet_destroy(struct subfacet *subfacet)
3855 struct facet *facet = subfacet->facet;
3857 if (list_is_singleton(&facet->subfacets)) {
3858 /* facet_remove() needs at least one subfacet (it will remove it). */
3859 facet_remove(facet);
3861 subfacet_destroy__(subfacet);
3865 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
3866 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
3867 * for use as temporary storage. */
3869 subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
3872 if (!subfacet->key) {
3873 ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
3874 odp_flow_key_from_flow(key, &subfacet->facet->flow);
3876 ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
3880 /* Composes the datapath actions for 'subfacet' based on its rule's actions. */
3882 subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet)
3884 struct facet *facet = subfacet->facet;
3885 struct rule_dpif *rule = facet->rule;
3886 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3887 struct ofpbuf *odp_actions;
3888 struct action_xlate_ctx ctx;
3890 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
3892 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
3893 facet->tags = ctx.tags;
3894 facet->may_install = ctx.may_set_up_flow;
3895 facet->has_learn = ctx.has_learn;
3896 facet->has_normal = ctx.has_normal;
3897 facet->has_fin_timeout = ctx.has_fin_timeout;
3898 facet->nf_flow.output_iface = ctx.nf_output_iface;
3899 facet->mirrors = ctx.mirrors;
3901 if (subfacet->actions_len != odp_actions->size
3902 || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
3903 free(subfacet->actions);
3904 subfacet->actions_len = odp_actions->size;
3905 subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
3908 ofpbuf_delete(odp_actions);
3911 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
3912 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
3913 * in the datapath will be zeroed and 'stats' will be updated with traffic new
3914 * since 'subfacet' was last updated.
3916 * Returns 0 if successful, otherwise a positive errno value. */
3918 subfacet_install(struct subfacet *subfacet,
3919 const struct nlattr *actions, size_t actions_len,
3920 struct dpif_flow_stats *stats)
3922 struct facet *facet = subfacet->facet;
3923 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3924 struct odputil_keybuf keybuf;
3925 enum dpif_flow_put_flags flags;
3929 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
3931 flags |= DPIF_FP_ZERO_STATS;
3934 subfacet_get_key(subfacet, &keybuf, &key);
3935 ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
3936 actions, actions_len, stats);
3939 subfacet_reset_dp_stats(subfacet, stats);
3945 /* If 'subfacet' is installed in the datapath, uninstalls it. */
3947 subfacet_uninstall(struct subfacet *subfacet)
3949 if (subfacet->installed) {
3950 struct rule_dpif *rule = subfacet->facet->rule;
3951 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3952 struct odputil_keybuf keybuf;
3953 struct dpif_flow_stats stats;
3957 subfacet_get_key(subfacet, &keybuf, &key);
3958 error = dpif_flow_del(ofproto->dpif, key.data, key.size, &stats);
3959 subfacet_reset_dp_stats(subfacet, &stats);
3961 subfacet_update_stats(subfacet, &stats);
3963 subfacet->installed = false;
3965 assert(subfacet->dp_packet_count == 0);
3966 assert(subfacet->dp_byte_count == 0);
3970 /* Resets 'subfacet''s datapath statistics counters. This should be called
3971 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
3972 * non-null, it should contain the statistics returned by dpif when 'subfacet'
3973 * was reset in the datapath. 'stats' will be modified to include only
3974 * statistics new since 'subfacet' was last updated. */
3976 subfacet_reset_dp_stats(struct subfacet *subfacet,
3977 struct dpif_flow_stats *stats)
3980 && subfacet->dp_packet_count <= stats->n_packets
3981 && subfacet->dp_byte_count <= stats->n_bytes) {
3982 stats->n_packets -= subfacet->dp_packet_count;
3983 stats->n_bytes -= subfacet->dp_byte_count;
3986 subfacet->dp_packet_count = 0;
3987 subfacet->dp_byte_count = 0;
3990 /* Updates 'subfacet''s used time. The caller is responsible for calling
3991 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
3993 subfacet_update_time(struct subfacet *subfacet, long long int used)
3995 if (used > subfacet->used) {
3996 subfacet->used = used;
3997 facet_update_time(subfacet->facet, used);
4001 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4003 * Because of the meaning of a subfacet's counters, it only makes sense to do
4004 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4005 * represents a packet that was sent by hand or if it represents statistics
4006 * that have been cleared out of the datapath. */
4008 subfacet_update_stats(struct subfacet *subfacet,
4009 const struct dpif_flow_stats *stats)
4011 if (stats->n_packets || stats->used > subfacet->used) {
4012 struct facet *facet = subfacet->facet;
4014 subfacet_update_time(subfacet, stats->used);
4015 facet->packet_count += stats->n_packets;
4016 facet->byte_count += stats->n_bytes;
4017 facet->tcp_flags |= stats->tcp_flags;
4018 facet_push_stats(facet);
4019 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
4025 static struct rule_dpif *
4026 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4029 struct cls_rule *cls_rule;
4030 struct classifier *cls;
4032 if (table_id >= N_TABLES) {
4036 cls = &ofproto->up.tables[table_id].cls;
4037 if (flow->nw_frag & FLOW_NW_FRAG_ANY
4038 && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4039 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
4040 * are unavailable. */
4041 struct flow ofpc_normal_flow = *flow;
4042 ofpc_normal_flow.tp_src = htons(0);
4043 ofpc_normal_flow.tp_dst = htons(0);
4044 cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
4046 cls_rule = classifier_lookup(cls, flow);
4048 return rule_dpif_cast(rule_from_cls_rule(cls_rule));
4052 complete_operation(struct rule_dpif *rule)
4054 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4056 rule_invalidate(rule);
4058 struct dpif_completion *c = xmalloc(sizeof *c);
4059 c->op = rule->up.pending;
4060 list_push_back(&ofproto->completions, &c->list_node);
4062 ofoperation_complete(rule->up.pending, 0);
4066 static struct rule *
4069 struct rule_dpif *rule = xmalloc(sizeof *rule);
4074 rule_dealloc(struct rule *rule_)
4076 struct rule_dpif *rule = rule_dpif_cast(rule_);
4081 rule_construct(struct rule *rule_)
4083 struct rule_dpif *rule = rule_dpif_cast(rule_);
4084 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4085 struct rule_dpif *victim;
4089 error = validate_actions(rule->up.actions, rule->up.n_actions,
4090 &rule->up.cr.flow, ofproto->max_ports);
4095 rule->packet_count = 0;
4096 rule->byte_count = 0;
4098 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
4099 if (victim && !list_is_empty(&victim->facets)) {
4100 struct facet *facet;
4102 rule->facets = victim->facets;
4103 list_moved(&rule->facets);
4104 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4105 /* XXX: We're only clearing our local counters here. It's possible
4106 * that quite a few packets are unaccounted for in the datapath
4107 * statistics. These will be accounted to the new rule instead of
4108 * cleared as required. This could be fixed by clearing out the
4109 * datapath statistics for this facet, but currently it doesn't
4111 facet_reset_counters(facet);
4115 /* Must avoid list_moved() in this case. */
4116 list_init(&rule->facets);
4119 table_id = rule->up.table_id;
4120 rule->tag = (victim ? victim->tag
4122 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
4123 ofproto->tables[table_id].basis));
4125 complete_operation(rule);
4130 rule_destruct(struct rule *rule_)
4132 struct rule_dpif *rule = rule_dpif_cast(rule_);
4133 struct facet *facet, *next_facet;
4135 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
4136 facet_revalidate(facet);
4139 complete_operation(rule);
4143 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4145 struct rule_dpif *rule = rule_dpif_cast(rule_);
4146 struct facet *facet;
4148 /* Start from historical data for 'rule' itself that are no longer tracked
4149 * in facets. This counts, for example, facets that have expired. */
4150 *packets = rule->packet_count;
4151 *bytes = rule->byte_count;
4153 /* Add any statistics that are tracked by facets. This includes
4154 * statistical data recently updated by ofproto_update_stats() as well as
4155 * stats for packets that were executed "by hand" via dpif_execute(). */
4156 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4157 *packets += facet->packet_count;
4158 *bytes += facet->byte_count;
4163 rule_execute(struct rule *rule_, const struct flow *flow,
4164 struct ofpbuf *packet)
4166 struct rule_dpif *rule = rule_dpif_cast(rule_);
4167 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4168 struct action_xlate_ctx ctx;
4169 struct ofpbuf *odp_actions;
4172 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
4173 rule, packet_get_tcp_flags(packet, flow), packet);
4174 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
4175 size = packet->size;
4176 if (execute_odp_actions(ofproto, flow, odp_actions->data,
4177 odp_actions->size, packet)) {
4178 rule->packet_count++;
4179 rule->byte_count += size;
4180 flow_push_stats(rule, flow, 1, size, time_msec());
4182 ofpbuf_delete(odp_actions);
4188 rule_modify_actions(struct rule *rule_)
4190 struct rule_dpif *rule = rule_dpif_cast(rule_);
4191 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4194 error = validate_actions(rule->up.actions, rule->up.n_actions,
4195 &rule->up.cr.flow, ofproto->max_ports);
4197 ofoperation_complete(rule->up.pending, error);
4201 complete_operation(rule);
4204 /* Sends 'packet' out 'ofport'.
4205 * May modify 'packet'.
4206 * Returns 0 if successful, otherwise a positive errno value. */
4208 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4210 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4211 struct ofpbuf key, odp_actions;
4212 struct odputil_keybuf keybuf;
4217 flow_extract((struct ofpbuf *) packet, 0, 0, 0, &flow);
4218 odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
4220 if (odp_port != ofport->odp_port) {
4221 eth_pop_vlan(packet);
4222 flow.vlan_tci = htons(0);
4225 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4226 odp_flow_key_from_flow(&key, &flow);
4228 ofpbuf_init(&odp_actions, 32);
4229 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
4231 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
4232 error = dpif_execute(ofproto->dpif,
4234 odp_actions.data, odp_actions.size,
4236 ofpbuf_uninit(&odp_actions);
4239 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
4240 ofproto->up.name, odp_port, strerror(error));
4242 ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0);
4246 /* OpenFlow to datapath action translation. */
4248 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
4249 struct action_xlate_ctx *ctx);
4250 static void xlate_normal(struct action_xlate_ctx *);
4253 put_userspace_action(const struct ofproto_dpif *ofproto,
4254 struct ofpbuf *odp_actions,
4255 const struct flow *flow,
4256 const struct user_action_cookie *cookie)
4260 pid = dpif_port_get_pid(ofproto->dpif,
4261 ofp_port_to_odp_port(flow->in_port));
4263 return odp_put_userspace_action(pid, cookie, odp_actions);
4266 /* Compose SAMPLE action for sFlow. */
4268 compose_sflow_action(const struct ofproto_dpif *ofproto,
4269 struct ofpbuf *odp_actions,
4270 const struct flow *flow,
4273 uint32_t port_ifindex;
4274 uint32_t probability;
4275 struct user_action_cookie cookie;
4276 size_t sample_offset, actions_offset;
4277 int cookie_offset, n_output;
4279 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
4283 if (odp_port == OVSP_NONE) {
4287 port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
4291 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
4293 /* Number of packets out of UINT_MAX to sample. */
4294 probability = dpif_sflow_get_probability(ofproto->sflow);
4295 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
4297 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
4299 cookie.type = USER_ACTION_COOKIE_SFLOW;
4300 cookie.data = port_ifindex;
4301 cookie.n_output = n_output;
4302 cookie.vlan_tci = 0;
4303 cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
4305 nl_msg_end_nested(odp_actions, actions_offset);
4306 nl_msg_end_nested(odp_actions, sample_offset);
4307 return cookie_offset;
4310 /* SAMPLE action must be first action in any given list of actions.
4311 * At this point we do not have all information required to build it. So try to
4312 * build sample action as complete as possible. */
4314 add_sflow_action(struct action_xlate_ctx *ctx)
4316 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
4318 &ctx->flow, OVSP_NONE);
4319 ctx->sflow_odp_port = 0;
4320 ctx->sflow_n_outputs = 0;
4323 /* Fix SAMPLE action according to data collected while composing ODP actions.
4324 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
4325 * USERSPACE action's user-cookie which is required for sflow. */
4327 fix_sflow_action(struct action_xlate_ctx *ctx)
4329 const struct flow *base = &ctx->base_flow;
4330 struct user_action_cookie *cookie;
4332 if (!ctx->user_cookie_offset) {
4336 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
4338 assert(cookie != NULL);
4339 assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
4341 if (ctx->sflow_n_outputs) {
4342 cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
4343 ctx->sflow_odp_port);
4345 if (ctx->sflow_n_outputs >= 255) {
4346 cookie->n_output = 255;
4348 cookie->n_output = ctx->sflow_n_outputs;
4350 cookie->vlan_tci = base->vlan_tci;
4354 compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
4357 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
4358 uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
4359 ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
4360 uint8_t flow_nw_tos = ctx->flow.nw_tos;
4364 struct priority_to_dscp *pdscp;
4366 if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD
4367 || (check_stp && !stp_forward_in_state(ofport->stp_state))) {
4371 pdscp = get_priority(ofport, ctx->flow.skb_priority);
4373 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4374 ctx->flow.nw_tos |= pdscp->dscp;
4377 /* We may not have an ofport record for this port, but it doesn't hurt
4378 * to allow forwarding to it anyhow. Maybe such a port will appear
4379 * later and we're pre-populating the flow table. */
4382 out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
4383 ctx->flow.vlan_tci);
4384 if (out_port != odp_port) {
4385 ctx->flow.vlan_tci = htons(0);
4387 commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
4388 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
4390 ctx->sflow_odp_port = odp_port;
4391 ctx->sflow_n_outputs++;
4392 ctx->nf_output_iface = ofp_port;
4393 ctx->flow.vlan_tci = flow_vlan_tci;
4394 ctx->flow.nw_tos = flow_nw_tos;
4398 compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
4400 compose_output_action__(ctx, ofp_port, true);
4404 xlate_table_action(struct action_xlate_ctx *ctx,
4405 uint16_t in_port, uint8_t table_id)
4407 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
4408 struct ofproto_dpif *ofproto = ctx->ofproto;
4409 struct rule_dpif *rule;
4410 uint16_t old_in_port;
4411 uint8_t old_table_id;
4413 old_table_id = ctx->table_id;
4414 ctx->table_id = table_id;
4416 /* Look up a flow with 'in_port' as the input port. */
4417 old_in_port = ctx->flow.in_port;
4418 ctx->flow.in_port = in_port;
4419 rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
4422 if (table_id > 0 && table_id < N_TABLES) {
4423 struct table_dpif *table = &ofproto->tables[table_id];
4424 if (table->other_table) {
4425 ctx->tags |= (rule && rule->tag
4427 : rule_calculate_tag(&ctx->flow,
4428 &table->other_table->wc,
4433 /* Restore the original input port. Otherwise OFPP_NORMAL and
4434 * OFPP_IN_PORT will have surprising behavior. */
4435 ctx->flow.in_port = old_in_port;
4437 if (ctx->resubmit_hook) {
4438 ctx->resubmit_hook(ctx, rule);
4442 struct rule_dpif *old_rule = ctx->rule;
4446 do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
4447 ctx->rule = old_rule;
4451 ctx->table_id = old_table_id;
4453 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
4455 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
4456 MAX_RESUBMIT_RECURSION);
4457 ctx->max_resubmit_trigger = true;
4462 xlate_resubmit_table(struct action_xlate_ctx *ctx,
4463 const struct nx_action_resubmit *nar)
4468 in_port = (nar->in_port == htons(OFPP_IN_PORT)
4470 : ntohs(nar->in_port));
4471 table_id = nar->table == 255 ? ctx->table_id : nar->table;
4473 xlate_table_action(ctx, in_port, table_id);
4477 flood_packets(struct action_xlate_ctx *ctx, bool all)
4479 struct ofport_dpif *ofport;
4481 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
4482 uint16_t ofp_port = ofport->up.ofp_port;
4484 if (ofp_port == ctx->flow.in_port) {
4489 compose_output_action__(ctx, ofp_port, false);
4490 } else if (!(ofport->up.pp.config & OFPUTIL_PC_NO_FLOOD)) {
4491 compose_output_action(ctx, ofp_port);
4495 ctx->nf_output_iface = NF_OUT_FLOOD;
4499 execute_controller_action(struct action_xlate_ctx *ctx, int len,
4500 enum ofp_packet_in_reason reason,
4501 uint16_t controller_id)
4503 struct ofputil_packet_in pin;
4504 struct ofpbuf *packet;
4506 ctx->may_set_up_flow = false;
4511 packet = ofpbuf_clone(ctx->packet);
4513 if (packet->l2 && packet->l3) {
4514 struct eth_header *eh;
4516 eth_pop_vlan(packet);
4519 /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2
4520 * LLC frame. Calculating the Ethernet type of these frames is more
4521 * trouble than seems appropriate for a simple assertion. */
4522 assert(ntohs(eh->eth_type) < ETH_TYPE_MIN
4523 || eh->eth_type == ctx->flow.dl_type);
4525 memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
4526 memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
4528 if (ctx->flow.vlan_tci & htons(VLAN_CFI)) {
4529 eth_push_vlan(packet, ctx->flow.vlan_tci);
4533 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4534 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
4535 ctx->flow.nw_tos, ctx->flow.nw_ttl);
4539 if (ctx->flow.nw_proto == IPPROTO_TCP) {
4540 packet_set_tcp_port(packet, ctx->flow.tp_src,
4542 } else if (ctx->flow.nw_proto == IPPROTO_UDP) {
4543 packet_set_udp_port(packet, ctx->flow.tp_src,
4550 pin.packet = packet->data;
4551 pin.packet_len = packet->size;
4552 pin.reason = reason;
4553 pin.controller_id = controller_id;
4554 pin.table_id = ctx->table_id;
4555 pin.cookie = ctx->rule ? ctx->rule->up.flow_cookie : 0;
4558 flow_get_metadata(&ctx->flow, &pin.fmd);
4560 connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin);
4561 ofpbuf_delete(packet);
4565 compose_dec_ttl(struct action_xlate_ctx *ctx)
4567 if (ctx->flow.dl_type != htons(ETH_TYPE_IP) &&
4568 ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) {
4572 if (ctx->flow.nw_ttl > 1) {
4576 execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0);
4578 /* Stop processing for current table. */
4584 xlate_output_action__(struct action_xlate_ctx *ctx,
4585 uint16_t port, uint16_t max_len)
4587 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
4589 ctx->nf_output_iface = NF_OUT_DROP;
4593 compose_output_action(ctx, ctx->flow.in_port);
4596 xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id);
4602 flood_packets(ctx, false);
4605 flood_packets(ctx, true);
4607 case OFPP_CONTROLLER:
4608 execute_controller_action(ctx, max_len, OFPR_ACTION, 0);
4614 if (port != ctx->flow.in_port) {
4615 compose_output_action(ctx, port);
4620 if (prev_nf_output_iface == NF_OUT_FLOOD) {
4621 ctx->nf_output_iface = NF_OUT_FLOOD;
4622 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
4623 ctx->nf_output_iface = prev_nf_output_iface;
4624 } else if (prev_nf_output_iface != NF_OUT_DROP &&
4625 ctx->nf_output_iface != NF_OUT_FLOOD) {
4626 ctx->nf_output_iface = NF_OUT_MULTI;
4631 xlate_output_reg_action(struct action_xlate_ctx *ctx,
4632 const struct nx_action_output_reg *naor)
4634 struct mf_subfield src;
4637 nxm_decode(&src, naor->src, naor->ofs_nbits);
4638 ofp_port = mf_get_subfield(&src, &ctx->flow);
4640 if (ofp_port <= UINT16_MAX) {
4641 xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
4646 xlate_output_action(struct action_xlate_ctx *ctx,
4647 const struct ofp_action_output *oao)
4649 xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
4653 xlate_enqueue_action(struct action_xlate_ctx *ctx,
4654 const struct ofp_action_enqueue *oae)
4657 uint32_t flow_priority, priority;
4660 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
4663 /* Fall back to ordinary output action. */
4664 xlate_output_action__(ctx, ntohs(oae->port), 0);
4668 /* Figure out datapath output port. */
4669 ofp_port = ntohs(oae->port);
4670 if (ofp_port == OFPP_IN_PORT) {
4671 ofp_port = ctx->flow.in_port;
4672 } else if (ofp_port == ctx->flow.in_port) {
4676 /* Add datapath actions. */
4677 flow_priority = ctx->flow.skb_priority;
4678 ctx->flow.skb_priority = priority;
4679 compose_output_action(ctx, ofp_port);
4680 ctx->flow.skb_priority = flow_priority;
4682 /* Update NetFlow output port. */
4683 if (ctx->nf_output_iface == NF_OUT_DROP) {
4684 ctx->nf_output_iface = ofp_port;
4685 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
4686 ctx->nf_output_iface = NF_OUT_MULTI;
4691 xlate_set_queue_action(struct action_xlate_ctx *ctx,
4692 const struct nx_action_set_queue *nasq)
4697 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
4700 /* Couldn't translate queue to a priority, so ignore. A warning
4701 * has already been logged. */
4705 ctx->flow.skb_priority = priority;
4708 struct xlate_reg_state {
4714 xlate_autopath(struct action_xlate_ctx *ctx,
4715 const struct nx_action_autopath *naa)
4717 uint16_t ofp_port = ntohl(naa->id);
4718 struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
4720 if (!port || !port->bundle) {
4721 ofp_port = OFPP_NONE;
4722 } else if (port->bundle->bond) {
4723 /* Autopath does not support VLAN hashing. */
4724 struct ofport_dpif *slave = bond_choose_output_slave(
4725 port->bundle->bond, &ctx->flow, 0, &ctx->tags);
4727 ofp_port = slave->up.ofp_port;
4730 autopath_execute(naa, &ctx->flow, ofp_port);
4734 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
4736 struct ofproto_dpif *ofproto = ofproto_;
4737 struct ofport_dpif *port;
4747 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
4750 port = get_ofp_port(ofproto, ofp_port);
4751 return port ? port->may_enable : false;
4756 xlate_learn_action(struct action_xlate_ctx *ctx,
4757 const struct nx_action_learn *learn)
4759 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
4760 struct ofputil_flow_mod fm;
4763 learn_execute(learn, &ctx->flow, &fm);
4765 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
4766 if (error && !VLOG_DROP_WARN(&rl)) {
4767 VLOG_WARN("learning action failed to modify flow table (%s)",
4768 ofperr_get_name(error));
4774 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4775 * means "infinite". */
4777 reduce_timeout(uint16_t max, uint16_t *timeout)
4779 if (max && (!*timeout || *timeout > max)) {
4785 xlate_fin_timeout(struct action_xlate_ctx *ctx,
4786 const struct nx_action_fin_timeout *naft)
4788 if (ctx->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) {
4789 struct rule_dpif *rule = ctx->rule;
4791 reduce_timeout(ntohs(naft->fin_idle_timeout), &rule->up.idle_timeout);
4792 reduce_timeout(ntohs(naft->fin_hard_timeout), &rule->up.hard_timeout);
4797 may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
4799 if (port->up.pp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
4800 ? OFPUTIL_PC_NO_RECV_STP
4801 : OFPUTIL_PC_NO_RECV)) {
4805 /* Only drop packets here if both forwarding and learning are
4806 * disabled. If just learning is enabled, we need to have
4807 * OFPP_NORMAL and the learning action have a look at the packet
4808 * before we can drop it. */
4809 if (!stp_forward_in_state(port->stp_state)
4810 && !stp_learn_in_state(port->stp_state)) {
4818 do_xlate_actions(const union ofp_action *in, size_t n_in,
4819 struct action_xlate_ctx *ctx)
4821 const struct ofport_dpif *port;
4822 const union ofp_action *ia;
4823 bool was_evictable = true;
4826 port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
4827 if (port && !may_receive(port, ctx)) {
4828 /* Drop this flow. */
4833 /* Don't let the rule we're working on get evicted underneath us. */
4834 was_evictable = ctx->rule->up.evictable;
4835 ctx->rule->up.evictable = false;
4837 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
4838 const struct ofp_action_dl_addr *oada;
4839 const struct nx_action_resubmit *nar;
4840 const struct nx_action_set_tunnel *nast;
4841 const struct nx_action_set_queue *nasq;
4842 const struct nx_action_multipath *nam;
4843 const struct nx_action_autopath *naa;
4844 const struct nx_action_bundle *nab;
4845 const struct nx_action_output_reg *naor;
4846 const struct nx_action_controller *nac;
4847 enum ofputil_action_code code;
4854 code = ofputil_decode_action_unsafe(ia);
4856 case OFPUTIL_OFPAT10_OUTPUT:
4857 xlate_output_action(ctx, &ia->output);
4860 case OFPUTIL_OFPAT10_SET_VLAN_VID:
4861 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
4862 ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
4865 case OFPUTIL_OFPAT10_SET_VLAN_PCP:
4866 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
4867 ctx->flow.vlan_tci |= htons(
4868 (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
4871 case OFPUTIL_OFPAT10_STRIP_VLAN:
4872 ctx->flow.vlan_tci = htons(0);
4875 case OFPUTIL_OFPAT10_SET_DL_SRC:
4876 oada = ((struct ofp_action_dl_addr *) ia);
4877 memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
4880 case OFPUTIL_OFPAT10_SET_DL_DST:
4881 oada = ((struct ofp_action_dl_addr *) ia);
4882 memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
4885 case OFPUTIL_OFPAT10_SET_NW_SRC:
4886 ctx->flow.nw_src = ia->nw_addr.nw_addr;
4889 case OFPUTIL_OFPAT10_SET_NW_DST:
4890 ctx->flow.nw_dst = ia->nw_addr.nw_addr;
4893 case OFPUTIL_OFPAT10_SET_NW_TOS:
4894 /* OpenFlow 1.0 only supports IPv4. */
4895 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4896 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4897 ctx->flow.nw_tos |= ia->nw_tos.nw_tos & IP_DSCP_MASK;
4901 case OFPUTIL_OFPAT10_SET_TP_SRC:
4902 ctx->flow.tp_src = ia->tp_port.tp_port;
4905 case OFPUTIL_OFPAT10_SET_TP_DST:
4906 ctx->flow.tp_dst = ia->tp_port.tp_port;
4909 case OFPUTIL_OFPAT10_ENQUEUE:
4910 xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
4913 case OFPUTIL_NXAST_RESUBMIT:
4914 nar = (const struct nx_action_resubmit *) ia;
4915 xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
4918 case OFPUTIL_NXAST_RESUBMIT_TABLE:
4919 xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
4922 case OFPUTIL_NXAST_SET_TUNNEL:
4923 nast = (const struct nx_action_set_tunnel *) ia;
4924 tun_id = htonll(ntohl(nast->tun_id));
4925 ctx->flow.tun_id = tun_id;
4928 case OFPUTIL_NXAST_SET_QUEUE:
4929 nasq = (const struct nx_action_set_queue *) ia;
4930 xlate_set_queue_action(ctx, nasq);
4933 case OFPUTIL_NXAST_POP_QUEUE:
4934 ctx->flow.skb_priority = ctx->orig_skb_priority;
4937 case OFPUTIL_NXAST_REG_MOVE:
4938 nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
4942 case OFPUTIL_NXAST_REG_LOAD:
4943 nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
4947 case OFPUTIL_NXAST_NOTE:
4948 /* Nothing to do. */
4951 case OFPUTIL_NXAST_SET_TUNNEL64:
4952 tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
4953 ctx->flow.tun_id = tun_id;
4956 case OFPUTIL_NXAST_MULTIPATH:
4957 nam = (const struct nx_action_multipath *) ia;
4958 multipath_execute(nam, &ctx->flow);
4961 case OFPUTIL_NXAST_AUTOPATH:
4962 naa = (const struct nx_action_autopath *) ia;
4963 xlate_autopath(ctx, naa);
4966 case OFPUTIL_NXAST_BUNDLE:
4967 ctx->ofproto->has_bundle_action = true;
4968 nab = (const struct nx_action_bundle *) ia;
4969 xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
4974 case OFPUTIL_NXAST_BUNDLE_LOAD:
4975 ctx->ofproto->has_bundle_action = true;
4976 nab = (const struct nx_action_bundle *) ia;
4977 bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
4981 case OFPUTIL_NXAST_OUTPUT_REG:
4982 naor = (const struct nx_action_output_reg *) ia;
4983 xlate_output_reg_action(ctx, naor);
4986 case OFPUTIL_NXAST_LEARN:
4987 ctx->has_learn = true;
4988 if (ctx->may_flow_mod) {
4989 xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
4993 case OFPUTIL_NXAST_DEC_TTL:
4994 if (compose_dec_ttl(ctx)) {
4999 case OFPUTIL_NXAST_EXIT:
5003 case OFPUTIL_NXAST_FIN_TIMEOUT:
5004 ctx->has_fin_timeout = true;
5005 xlate_fin_timeout(ctx, (const struct nx_action_fin_timeout *) ia);
5008 case OFPUTIL_NXAST_CONTROLLER:
5009 nac = (const struct nx_action_controller *) ia;
5010 execute_controller_action(ctx, ntohs(nac->max_len), nac->reason,
5011 ntohs(nac->controller_id));
5017 /* We've let OFPP_NORMAL and the learning action look at the packet,
5018 * so drop it now if forwarding is disabled. */
5019 if (port && !stp_forward_in_state(port->stp_state)) {
5020 ofpbuf_clear(ctx->odp_actions);
5021 add_sflow_action(ctx);
5024 ctx->rule->up.evictable = was_evictable;
5029 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
5030 struct ofproto_dpif *ofproto, const struct flow *flow,
5031 ovs_be16 initial_tci, struct rule_dpif *rule,
5032 uint8_t tcp_flags, const struct ofpbuf *packet)
5034 ctx->ofproto = ofproto;
5036 ctx->base_flow = ctx->flow;
5037 ctx->base_flow.tun_id = 0;
5038 ctx->base_flow.vlan_tci = initial_tci;
5040 ctx->packet = packet;
5041 ctx->may_learn_macs = packet != NULL;
5042 ctx->may_flow_mod = packet != NULL;
5043 ctx->tcp_flags = tcp_flags;
5044 ctx->resubmit_hook = NULL;
5047 static struct ofpbuf *
5048 xlate_actions(struct action_xlate_ctx *ctx,
5049 const union ofp_action *in, size_t n_in)
5051 struct flow orig_flow = ctx->flow;
5053 COVERAGE_INC(ofproto_dpif_xlate);
5055 ctx->odp_actions = ofpbuf_new(512);
5056 ofpbuf_reserve(ctx->odp_actions, NL_A_U32_SIZE);
5058 ctx->may_set_up_flow = true;
5059 ctx->has_learn = false;
5060 ctx->has_normal = false;
5061 ctx->has_fin_timeout = false;
5062 ctx->nf_output_iface = NF_OUT_DROP;
5065 ctx->max_resubmit_trigger = false;
5066 ctx->orig_skb_priority = ctx->flow.skb_priority;
5070 if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
5071 switch (ctx->ofproto->up.frag_handling) {
5072 case OFPC_FRAG_NORMAL:
5073 /* We must pretend that transport ports are unavailable. */
5074 ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0);
5075 ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0);
5078 case OFPC_FRAG_DROP:
5079 return ctx->odp_actions;
5081 case OFPC_FRAG_REASM:
5084 case OFPC_FRAG_NX_MATCH:
5085 /* Nothing to do. */
5088 case OFPC_INVALID_TTL_TO_CONTROLLER:
5093 if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
5094 ctx->may_set_up_flow = false;
5095 return ctx->odp_actions;
5097 static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
5098 struct flow original_flow = ctx->flow;
5099 ovs_be16 initial_tci = ctx->base_flow.vlan_tci;
5101 add_sflow_action(ctx);
5102 do_xlate_actions(in, n_in, ctx);
5104 if (ctx->max_resubmit_trigger && !ctx->resubmit_hook
5105 && !VLOG_DROP_ERR(&trace_rl)) {
5106 struct ds ds = DS_EMPTY_INITIALIZER;
5108 ofproto_trace(ctx->ofproto, &original_flow, ctx->packet,
5110 VLOG_ERR("Trace triggered by excessive resubmit recursion:\n%s",
5115 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
5116 ctx->odp_actions->data,
5117 ctx->odp_actions->size)) {
5118 ctx->may_set_up_flow = false;
5120 && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
5122 compose_output_action(ctx, OFPP_LOCAL);
5125 add_mirror_actions(ctx, &orig_flow);
5126 fix_sflow_action(ctx);
5129 return ctx->odp_actions;
5132 /* OFPP_NORMAL implementation. */
5134 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
5136 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
5137 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
5138 * the bundle on which the packet was received, returns the VLAN to which the
5141 * Both 'vid' and the return value are in the range 0...4095. */
5143 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
5145 switch (in_bundle->vlan_mode) {
5146 case PORT_VLAN_ACCESS:
5147 return in_bundle->vlan;
5150 case PORT_VLAN_TRUNK:
5153 case PORT_VLAN_NATIVE_UNTAGGED:
5154 case PORT_VLAN_NATIVE_TAGGED:
5155 return vid ? vid : in_bundle->vlan;
5162 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
5163 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
5166 * 'vid' should be the VID obtained from the 802.1Q header that was received as
5167 * part of a packet (specify 0 if there was no 802.1Q header), in the range
5170 input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn)
5172 /* Allow any VID on the OFPP_NONE port. */
5173 if (in_bundle == &ofpp_none_bundle) {
5177 switch (in_bundle->vlan_mode) {
5178 case PORT_VLAN_ACCESS:
5181 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5182 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
5183 "packet received on port %s configured as VLAN "
5184 "%"PRIu16" access port",
5185 in_bundle->ofproto->up.name, vid,
5186 in_bundle->name, in_bundle->vlan);
5192 case PORT_VLAN_NATIVE_UNTAGGED:
5193 case PORT_VLAN_NATIVE_TAGGED:
5195 /* Port must always carry its native VLAN. */
5199 case PORT_VLAN_TRUNK:
5200 if (!ofbundle_includes_vlan(in_bundle, vid)) {
5202 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5203 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet "
5204 "received on port %s not configured for trunking "
5206 in_bundle->ofproto->up.name, vid,
5207 in_bundle->name, vid);
5219 /* Given 'vlan', the VLAN that a packet belongs to, and
5220 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
5221 * that should be included in the 802.1Q header. (If the return value is 0,
5222 * then the 802.1Q header should only be included in the packet if there is a
5225 * Both 'vlan' and the return value are in the range 0...4095. */
5227 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
5229 switch (out_bundle->vlan_mode) {
5230 case PORT_VLAN_ACCESS:
5233 case PORT_VLAN_TRUNK:
5234 case PORT_VLAN_NATIVE_TAGGED:
5237 case PORT_VLAN_NATIVE_UNTAGGED:
5238 return vlan == out_bundle->vlan ? 0 : vlan;
5246 output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle,
5249 struct ofport_dpif *port;
5251 ovs_be16 tci, old_tci;
5253 vid = output_vlan_to_vid(out_bundle, vlan);
5254 if (!out_bundle->bond) {
5255 port = ofbundle_get_a_port(out_bundle);
5257 port = bond_choose_output_slave(out_bundle->bond, &ctx->flow,
5260 /* No slaves enabled, so drop packet. */
5265 old_tci = ctx->flow.vlan_tci;
5267 if (tci || out_bundle->use_priority_tags) {
5268 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
5270 tci |= htons(VLAN_CFI);
5273 ctx->flow.vlan_tci = tci;
5275 compose_output_action(ctx, port->up.ofp_port);
5276 ctx->flow.vlan_tci = old_tci;
5280 mirror_mask_ffs(mirror_mask_t mask)
5282 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
5287 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
5289 return (bundle->vlan_mode != PORT_VLAN_ACCESS
5290 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
5294 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
5296 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
5299 /* Returns an arbitrary interface within 'bundle'. */
5300 static struct ofport_dpif *
5301 ofbundle_get_a_port(const struct ofbundle *bundle)
5303 return CONTAINER_OF(list_front(&bundle->ports),
5304 struct ofport_dpif, bundle_node);
5308 vlan_is_mirrored(const struct ofmirror *m, int vlan)
5310 return !m->vlans || bitmap_is_set(m->vlans, vlan);
5313 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
5314 * to a VLAN. In general most packets may be mirrored but we want to drop
5315 * protocols that may confuse switches. */
5317 eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
5319 /* If you change this function's behavior, please update corresponding
5320 * documentation in vswitch.xml at the same time. */
5321 if (dst[0] != 0x01) {
5322 /* All the currently banned MACs happen to start with 01 currently, so
5323 * this is a quick way to eliminate most of the good ones. */
5325 if (eth_addr_is_reserved(dst)) {
5326 /* Drop STP, IEEE pause frames, and other reserved protocols
5327 * (01-80-c2-00-00-0x). */
5331 if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
5333 if ((dst[3] & 0xfe) == 0xcc &&
5334 (dst[4] & 0xfe) == 0xcc &&
5335 (dst[5] & 0xfe) == 0xcc) {
5336 /* Drop the following protocols plus others following the same
5339 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
5340 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
5341 STP Uplink Fast (01-00-0c-cd-cd-cd) */
5345 if (!(dst[3] | dst[4] | dst[5])) {
5346 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
5355 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
5357 struct ofproto_dpif *ofproto = ctx->ofproto;
5358 mirror_mask_t mirrors;
5359 struct ofbundle *in_bundle;
5362 const struct nlattr *a;
5365 in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
5366 ctx->packet != NULL);
5370 mirrors = in_bundle->src_mirrors;
5372 /* Drop frames on bundles reserved for mirroring. */
5373 if (in_bundle->mirror_out) {
5374 if (ctx->packet != NULL) {
5375 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5376 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5377 "%s, which is reserved exclusively for mirroring",
5378 ctx->ofproto->up.name, in_bundle->name);
5384 vid = vlan_tci_to_vid(orig_flow->vlan_tci);
5385 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5388 vlan = input_vid_to_vlan(in_bundle, vid);
5390 /* Look at the output ports to check for destination selections. */
5392 NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data,
5393 ctx->odp_actions->size) {
5394 enum ovs_action_attr type = nl_attr_type(a);
5395 struct ofport_dpif *ofport;
5397 if (type != OVS_ACTION_ATTR_OUTPUT) {
5401 ofport = get_odp_port(ofproto, nl_attr_get_u32(a));
5402 if (ofport && ofport->bundle) {
5403 mirrors |= ofport->bundle->dst_mirrors;
5411 /* Restore the original packet before adding the mirror actions. */
5412 ctx->flow = *orig_flow;
5417 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5419 if (!vlan_is_mirrored(m, vlan)) {
5420 mirrors &= mirrors - 1;
5424 mirrors &= ~m->dup_mirrors;
5425 ctx->mirrors |= m->dup_mirrors;
5427 output_normal(ctx, m->out, vlan);
5428 } else if (eth_dst_may_rspan(orig_flow->dl_dst)
5429 && vlan != m->out_vlan) {
5430 struct ofbundle *bundle;
5432 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
5433 if (ofbundle_includes_vlan(bundle, m->out_vlan)
5434 && !bundle->mirror_out) {
5435 output_normal(ctx, bundle, m->out_vlan);
5443 update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
5444 uint64_t packets, uint64_t bytes)
5450 for (; mirrors; mirrors &= mirrors - 1) {
5453 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5456 /* In normal circumstances 'm' will not be NULL. However,
5457 * if mirrors are reconfigured, we can temporarily get out
5458 * of sync in facet_revalidate(). We could "correct" the
5459 * mirror list before reaching here, but doing that would
5460 * not properly account the traffic stats we've currently
5461 * accumulated for previous mirror configuration. */
5465 m->packet_count += packets;
5466 m->byte_count += bytes;
5470 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
5471 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
5472 * indicate this; newer upstream kernels use gratuitous ARP requests. */
5474 is_gratuitous_arp(const struct flow *flow)
5476 return (flow->dl_type == htons(ETH_TYPE_ARP)
5477 && eth_addr_is_broadcast(flow->dl_dst)
5478 && (flow->nw_proto == ARP_OP_REPLY
5479 || (flow->nw_proto == ARP_OP_REQUEST
5480 && flow->nw_src == flow->nw_dst)));
5484 update_learning_table(struct ofproto_dpif *ofproto,
5485 const struct flow *flow, int vlan,
5486 struct ofbundle *in_bundle)
5488 struct mac_entry *mac;
5490 /* Don't learn the OFPP_NONE port. */
5491 if (in_bundle == &ofpp_none_bundle) {
5495 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
5499 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
5500 if (is_gratuitous_arp(flow)) {
5501 /* We don't want to learn from gratuitous ARP packets that are
5502 * reflected back over bond slaves so we lock the learning table. */
5503 if (!in_bundle->bond) {
5504 mac_entry_set_grat_arp_lock(mac);
5505 } else if (mac_entry_is_grat_arp_locked(mac)) {
5510 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
5511 /* The log messages here could actually be useful in debugging,
5512 * so keep the rate limit relatively high. */
5513 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
5514 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
5515 "on port %s in VLAN %d",
5516 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
5517 in_bundle->name, vlan);
5519 mac->port.p = in_bundle;
5520 tag_set_add(&ofproto->revalidate_set,
5521 mac_learning_changed(ofproto->ml, mac));
5525 static struct ofbundle *
5526 lookup_input_bundle(struct ofproto_dpif *ofproto, uint16_t in_port, bool warn)
5528 struct ofport_dpif *ofport;
5530 /* Special-case OFPP_NONE, which a controller may use as the ingress
5531 * port for traffic that it is sourcing. */
5532 if (in_port == OFPP_NONE) {
5533 return &ofpp_none_bundle;
5536 /* Find the port and bundle for the received packet. */
5537 ofport = get_ofp_port(ofproto, in_port);
5538 if (ofport && ofport->bundle) {
5539 return ofport->bundle;
5542 /* Odd. A few possible reasons here:
5544 * - We deleted a port but there are still a few packets queued up
5547 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
5548 * we don't know about.
5550 * - The ofproto client didn't configure the port as part of a bundle.
5553 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5555 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
5556 "port %"PRIu16, ofproto->up.name, in_port);
5561 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
5562 * dropped. Returns true if they may be forwarded, false if they should be
5565 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
5566 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
5568 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
5569 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
5570 * checked by input_vid_is_valid().
5572 * May also add tags to '*tags', although the current implementation only does
5573 * so in one special case.
5576 is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
5577 struct ofport_dpif *in_port, uint16_t vlan, tag_type *tags)
5579 struct ofbundle *in_bundle = in_port->bundle;
5581 /* Drop frames for reserved multicast addresses
5582 * only if forward_bpdu option is absent. */
5583 if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
5587 if (in_bundle->bond) {
5588 struct mac_entry *mac;
5590 switch (bond_check_admissibility(in_bundle->bond, in_port,
5591 flow->dl_dst, tags)) {
5598 case BV_DROP_IF_MOVED:
5599 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
5600 if (mac && mac->port.p != in_bundle &&
5601 (!is_gratuitous_arp(flow)
5602 || mac_entry_is_grat_arp_locked(mac))) {
5613 xlate_normal(struct action_xlate_ctx *ctx)
5615 struct ofport_dpif *in_port;
5616 struct ofbundle *in_bundle;
5617 struct mac_entry *mac;
5621 ctx->has_normal = true;
5623 in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
5624 ctx->packet != NULL);
5629 /* We know 'in_port' exists unless it is "ofpp_none_bundle",
5630 * since lookup_input_bundle() succeeded. */
5631 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
5633 /* Drop malformed frames. */
5634 if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
5635 !(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
5636 if (ctx->packet != NULL) {
5637 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5638 VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial "
5639 "VLAN tag received on port %s",
5640 ctx->ofproto->up.name, in_bundle->name);
5645 /* Drop frames on bundles reserved for mirroring. */
5646 if (in_bundle->mirror_out) {
5647 if (ctx->packet != NULL) {
5648 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5649 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5650 "%s, which is reserved exclusively for mirroring",
5651 ctx->ofproto->up.name, in_bundle->name);
5657 vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
5658 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5661 vlan = input_vid_to_vlan(in_bundle, vid);
5663 /* Check other admissibility requirements. */
5665 !is_admissible(ctx->ofproto, &ctx->flow, in_port, vlan, &ctx->tags)) {
5669 /* Learn source MAC. */
5670 if (ctx->may_learn_macs) {
5671 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
5674 /* Determine output bundle. */
5675 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
5678 if (mac->port.p != in_bundle) {
5679 output_normal(ctx, mac->port.p, vlan);
5682 struct ofbundle *bundle;
5684 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
5685 if (bundle != in_bundle
5686 && ofbundle_includes_vlan(bundle, vlan)
5687 && bundle->floodable
5688 && !bundle->mirror_out) {
5689 output_normal(ctx, bundle, vlan);
5692 ctx->nf_output_iface = NF_OUT_FLOOD;
5696 /* Optimized flow revalidation.
5698 * It's a difficult problem, in general, to tell which facets need to have
5699 * their actions recalculated whenever the OpenFlow flow table changes. We
5700 * don't try to solve that general problem: for most kinds of OpenFlow flow
5701 * table changes, we recalculate the actions for every facet. This is
5702 * relatively expensive, but it's good enough if the OpenFlow flow table
5703 * doesn't change very often.
5705 * However, we can expect one particular kind of OpenFlow flow table change to
5706 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
5707 * of CPU on revalidating every facet whenever MAC learning modifies the flow
5708 * table, we add a special case that applies to flow tables in which every rule
5709 * has the same form (that is, the same wildcards), except that the table is
5710 * also allowed to have a single "catch-all" flow that matches all packets. We
5711 * optimize this case by tagging all of the facets that resubmit into the table
5712 * and invalidating the same tag whenever a flow changes in that table. The
5713 * end result is that we revalidate just the facets that need it (and sometimes
5714 * a few more, but not all of the facets or even all of the facets that
5715 * resubmit to the table modified by MAC learning). */
5717 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
5718 * into an OpenFlow table with the given 'basis'. */
5720 rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
5723 if (flow_wildcards_is_catchall(wc)) {
5726 struct flow tag_flow = *flow;
5727 flow_zero_wildcards(&tag_flow, wc);
5728 return tag_create_deterministic(flow_hash(&tag_flow, secret));
5732 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
5733 * taggability of that table.
5735 * This function must be called after *each* change to a flow table. If you
5736 * skip calling it on some changes then the pointer comparisons at the end can
5737 * be invalid if you get unlucky. For example, if a flow removal causes a
5738 * cls_table to be destroyed and then a flow insertion causes a cls_table with
5739 * different wildcards to be created with the same address, then this function
5740 * will incorrectly skip revalidation. */
5742 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
5744 struct table_dpif *table = &ofproto->tables[table_id];
5745 const struct oftable *oftable = &ofproto->up.tables[table_id];
5746 struct cls_table *catchall, *other;
5747 struct cls_table *t;
5749 catchall = other = NULL;
5751 switch (hmap_count(&oftable->cls.tables)) {
5753 /* We could tag this OpenFlow table but it would make the logic a
5754 * little harder and it's a corner case that doesn't seem worth it
5760 HMAP_FOR_EACH (t, hmap_node, &oftable->cls.tables) {
5761 if (cls_table_is_catchall(t)) {
5763 } else if (!other) {
5766 /* Indicate that we can't tag this by setting both tables to
5767 * NULL. (We know that 'catchall' is already NULL.) */
5774 /* Can't tag this table. */
5778 if (table->catchall_table != catchall || table->other_table != other) {
5779 table->catchall_table = catchall;
5780 table->other_table = other;
5781 ofproto->need_revalidate = true;
5785 /* Given 'rule' that has changed in some way (either it is a rule being
5786 * inserted, a rule being deleted, or a rule whose actions are being
5787 * modified), marks facets for revalidation to ensure that packets will be
5788 * forwarded correctly according to the new state of the flow table.
5790 * This function must be called after *each* change to a flow table. See
5791 * the comment on table_update_taggable() for more information. */
5793 rule_invalidate(const struct rule_dpif *rule)
5795 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5797 table_update_taggable(ofproto, rule->up.table_id);
5799 if (!ofproto->need_revalidate) {
5800 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
5802 if (table->other_table && rule->tag) {
5803 tag_set_add(&ofproto->revalidate_set, rule->tag);
5805 ofproto->need_revalidate = true;
5811 set_frag_handling(struct ofproto *ofproto_,
5812 enum ofp_config_flags frag_handling)
5814 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5816 if (frag_handling != OFPC_FRAG_REASM) {
5817 ofproto->need_revalidate = true;
5825 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5826 const struct flow *flow,
5827 const union ofp_action *ofp_actions, size_t n_ofp_actions)
5829 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5832 if (flow->in_port >= ofproto->max_ports && flow->in_port < OFPP_MAX) {
5833 return OFPERR_NXBRC_BAD_IN_PORT;
5836 error = validate_actions(ofp_actions, n_ofp_actions, flow,
5837 ofproto->max_ports);
5839 struct odputil_keybuf keybuf;
5840 struct ofpbuf *odp_actions;
5841 struct ofproto_push push;
5844 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5845 odp_flow_key_from_flow(&key, flow);
5847 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, NULL,
5848 packet_get_tcp_flags(packet, flow), packet);
5850 /* Ensure that resubmits in 'ofp_actions' get accounted to their
5851 * matching rules. */
5853 push.bytes = packet->size;
5854 push.used = time_msec();
5855 push.ctx.resubmit_hook = push_resubmit;
5857 odp_actions = xlate_actions(&push.ctx, ofp_actions, n_ofp_actions);
5858 dpif_execute(ofproto->dpif, key.data, key.size,
5859 odp_actions->data, odp_actions->size, packet);
5860 ofpbuf_delete(odp_actions);
5868 set_netflow(struct ofproto *ofproto_,
5869 const struct netflow_options *netflow_options)
5871 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5873 if (netflow_options) {
5874 if (!ofproto->netflow) {
5875 ofproto->netflow = netflow_create();
5877 return netflow_set_options(ofproto->netflow, netflow_options);
5879 netflow_destroy(ofproto->netflow);
5880 ofproto->netflow = NULL;
5886 get_netflow_ids(const struct ofproto *ofproto_,
5887 uint8_t *engine_type, uint8_t *engine_id)
5889 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5891 dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
5895 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5897 if (!facet_is_controller_flow(facet) &&
5898 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5899 struct subfacet *subfacet;
5900 struct ofexpired expired;
5902 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5903 if (subfacet->installed) {
5904 struct dpif_flow_stats stats;
5906 subfacet_install(subfacet, subfacet->actions,
5907 subfacet->actions_len, &stats);
5908 subfacet_update_stats(subfacet, &stats);
5912 expired.flow = facet->flow;
5913 expired.packet_count = facet->packet_count;
5914 expired.byte_count = facet->byte_count;
5915 expired.used = facet->used;
5916 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5921 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5923 struct facet *facet;
5925 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
5926 send_active_timeout(ofproto, facet);
5930 static struct ofproto_dpif *
5931 ofproto_dpif_lookup(const char *name)
5933 struct ofproto_dpif *ofproto;
5935 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5936 hash_string(name, 0), &all_ofproto_dpifs) {
5937 if (!strcmp(ofproto->up.name, name)) {
5945 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5946 const char *argv[], void *aux OVS_UNUSED)
5948 struct ofproto_dpif *ofproto;
5951 ofproto = ofproto_dpif_lookup(argv[1]);
5953 unixctl_command_reply_error(conn, "no such bridge");
5956 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5958 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5959 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5963 unixctl_command_reply(conn, "table successfully flushed");
5967 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5968 const char *argv[], void *aux OVS_UNUSED)
5970 struct ds ds = DS_EMPTY_INITIALIZER;
5971 const struct ofproto_dpif *ofproto;
5972 const struct mac_entry *e;
5974 ofproto = ofproto_dpif_lookup(argv[1]);
5976 unixctl_command_reply_error(conn, "no such bridge");
5980 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5981 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5982 struct ofbundle *bundle = e->port.p;
5983 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
5984 ofbundle_get_a_port(bundle)->odp_port,
5985 e->vlan, ETH_ADDR_ARGS(e->mac),
5986 mac_entry_age(ofproto->ml, e));
5988 unixctl_command_reply(conn, ds_cstr(&ds));
5993 struct action_xlate_ctx ctx;
5999 trace_format_rule(struct ds *result, uint8_t table_id, int level,
6000 const struct rule_dpif *rule)
6002 ds_put_char_multiple(result, '\t', level);
6004 ds_put_cstr(result, "No match\n");
6008 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
6009 table_id, ntohll(rule->up.flow_cookie));
6010 cls_rule_format(&rule->up.cr, result);
6011 ds_put_char(result, '\n');
6013 ds_put_char_multiple(result, '\t', level);
6014 ds_put_cstr(result, "OpenFlow ");
6015 ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
6016 ds_put_char(result, '\n');
6020 trace_format_flow(struct ds *result, int level, const char *title,
6021 struct trace_ctx *trace)
6023 ds_put_char_multiple(result, '\t', level);
6024 ds_put_format(result, "%s: ", title);
6025 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
6026 ds_put_cstr(result, "unchanged");
6028 flow_format(result, &trace->ctx.flow);
6029 trace->flow = trace->ctx.flow;
6031 ds_put_char(result, '\n');
6035 trace_format_regs(struct ds *result, int level, const char *title,
6036 struct trace_ctx *trace)
6040 ds_put_char_multiple(result, '\t', level);
6041 ds_put_format(result, "%s:", title);
6042 for (i = 0; i < FLOW_N_REGS; i++) {
6043 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
6045 ds_put_char(result, '\n');
6049 trace_format_odp(struct ds *result, int level, const char *title,
6050 struct trace_ctx *trace)
6052 struct ofpbuf *odp_actions = trace->ctx.odp_actions;
6054 ds_put_char_multiple(result, '\t', level);
6055 ds_put_format(result, "%s: ", title);
6056 format_odp_actions(result, odp_actions->data, odp_actions->size);
6057 ds_put_char(result, '\n');
6061 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
6063 struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx);
6064 struct ds *result = trace->result;
6066 ds_put_char(result, '\n');
6067 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
6068 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
6069 trace_format_odp(result, ctx->recurse + 1, "Resubmitted odp", trace);
6070 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
6074 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
6075 void *aux OVS_UNUSED)
6077 const char *dpname = argv[1];
6078 struct ofproto_dpif *ofproto;
6079 struct ofpbuf odp_key;
6080 struct ofpbuf *packet;
6081 ovs_be16 initial_tci;
6087 ofpbuf_init(&odp_key, 0);
6090 ofproto = ofproto_dpif_lookup(dpname);
6092 unixctl_command_reply_error(conn, "Unknown ofproto (use ofproto/list "
6096 if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) {
6097 /* ofproto/trace dpname flow [-generate] */
6098 const char *flow_s = argv[2];
6099 const char *generate_s = argv[3];
6102 /* Convert string to datapath key. */
6103 ofpbuf_init(&odp_key, 0);
6104 error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
6106 unixctl_command_reply_error(conn, "Bad flow syntax");
6110 /* Convert odp_key to flow. */
6111 error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
6112 odp_key.size, &flow,
6113 &initial_tci, NULL);
6114 if (error == ODP_FIT_ERROR) {
6115 unixctl_command_reply_error(conn, "Invalid flow");
6119 /* Generate a packet, if requested. */
6121 packet = ofpbuf_new(0);
6122 flow_compose(packet, &flow);
6124 } else if (argc == 6) {
6125 /* ofproto/trace dpname priority tun_id in_port packet */
6126 const char *priority_s = argv[2];
6127 const char *tun_id_s = argv[3];
6128 const char *in_port_s = argv[4];
6129 const char *packet_s = argv[5];
6130 uint16_t in_port = ofp_port_to_odp_port(atoi(in_port_s));
6131 ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
6132 uint32_t priority = atoi(priority_s);
6135 msg = eth_from_hex(packet_s, &packet);
6137 unixctl_command_reply_error(conn, msg);
6141 ds_put_cstr(&result, "Packet: ");
6142 s = ofp_packet_to_string(packet->data, packet->size);
6143 ds_put_cstr(&result, s);
6146 flow_extract(packet, priority, tun_id, in_port, &flow);
6147 initial_tci = flow.vlan_tci;
6149 unixctl_command_reply_error(conn, "Bad command syntax");
6153 ofproto_trace(ofproto, &flow, packet, initial_tci, &result);
6154 unixctl_command_reply(conn, ds_cstr(&result));
6157 ds_destroy(&result);
6158 ofpbuf_delete(packet);
6159 ofpbuf_uninit(&odp_key);
6163 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
6164 const struct ofpbuf *packet, ovs_be16 initial_tci,
6167 struct rule_dpif *rule;
6169 ds_put_cstr(ds, "Flow: ");
6170 flow_format(ds, flow);
6171 ds_put_char(ds, '\n');
6173 rule = rule_dpif_lookup(ofproto, flow, 0);
6174 trace_format_rule(ds, 0, 0, rule);
6176 struct trace_ctx trace;
6177 struct ofpbuf *odp_actions;
6180 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
6183 action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci,
6184 rule, tcp_flags, packet);
6185 trace.ctx.resubmit_hook = trace_resubmit;
6186 odp_actions = xlate_actions(&trace.ctx,
6187 rule->up.actions, rule->up.n_actions);
6189 ds_put_char(ds, '\n');
6190 trace_format_flow(ds, 0, "Final flow", &trace);
6191 ds_put_cstr(ds, "Datapath actions: ");
6192 format_odp_actions(ds, odp_actions->data, odp_actions->size);
6193 ofpbuf_delete(odp_actions);
6195 if (!trace.ctx.may_set_up_flow) {
6197 ds_put_cstr(ds, "\nThis flow is not cachable.");
6199 ds_put_cstr(ds, "\nThe datapath actions are incomplete--"
6200 "for complete actions, please supply a packet.");
6207 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6208 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6211 unixctl_command_reply(conn, NULL);
6215 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6216 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6219 unixctl_command_reply(conn, NULL);
6222 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
6223 * 'reply' describing the results. */
6225 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
6227 struct facet *facet;
6231 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
6232 if (!facet_check_consistency(facet)) {
6237 ofproto->need_revalidate = true;
6241 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
6242 ofproto->up.name, errors);
6244 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
6249 ofproto_dpif_self_check(struct unixctl_conn *conn,
6250 int argc, const char *argv[], void *aux OVS_UNUSED)
6252 struct ds reply = DS_EMPTY_INITIALIZER;
6253 struct ofproto_dpif *ofproto;
6256 ofproto = ofproto_dpif_lookup(argv[1]);
6258 unixctl_command_reply_error(conn, "Unknown ofproto (use "
6259 "ofproto/list for help)");
6262 ofproto_dpif_self_check__(ofproto, &reply);
6264 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
6265 ofproto_dpif_self_check__(ofproto, &reply);
6269 unixctl_command_reply(conn, ds_cstr(&reply));
6274 ofproto_dpif_unixctl_init(void)
6276 static bool registered;
6282 unixctl_command_register(
6284 "bridge {tun_id in_port packet | odp_flow [-generate]}",
6285 2, 5, ofproto_unixctl_trace, NULL);
6286 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6287 ofproto_unixctl_fdb_flush, NULL);
6288 unixctl_command_register("fdb/show", "bridge", 1, 1,
6289 ofproto_unixctl_fdb_show, NULL);
6290 unixctl_command_register("ofproto/clog", "", 0, 0,
6291 ofproto_dpif_clog, NULL);
6292 unixctl_command_register("ofproto/unclog", "", 0, 0,
6293 ofproto_dpif_unclog, NULL);
6294 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6295 ofproto_dpif_self_check, NULL);
6298 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6300 * This is deprecated. It is only for compatibility with broken device drivers
6301 * in old versions of Linux that do not properly support VLANs when VLAN
6302 * devices are not used. When broken device drivers are no longer in
6303 * widespread use, we will delete these interfaces. */
6306 set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
6308 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6309 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6311 if (realdev_ofp_port == ofport->realdev_ofp_port
6312 && vid == ofport->vlandev_vid) {
6316 ofproto->need_revalidate = true;
6318 if (ofport->realdev_ofp_port) {
6321 if (realdev_ofp_port && ofport->bundle) {
6322 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6323 * themselves be part of a bundle. */
6324 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6327 ofport->realdev_ofp_port = realdev_ofp_port;
6328 ofport->vlandev_vid = vid;
6330 if (realdev_ofp_port) {
6331 vsp_add(ofport, realdev_ofp_port, vid);
6338 hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
6340 return hash_2words(realdev_ofp_port, vid);
6343 /* Returns the ODP port number of the Linux VLAN device that corresponds to
6344 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
6345 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
6346 * it would return the port number of eth0.9.
6348 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
6349 * function just returns its 'realdev_odp_port' argument. */
6351 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6352 uint32_t realdev_odp_port, ovs_be16 vlan_tci)
6354 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6355 uint16_t realdev_ofp_port = odp_port_to_ofp_port(realdev_odp_port);
6356 int vid = vlan_tci_to_vid(vlan_tci);
6357 const struct vlan_splinter *vsp;
6359 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6360 hash_realdev_vid(realdev_ofp_port, vid),
6361 &ofproto->realdev_vid_map) {
6362 if (vsp->realdev_ofp_port == realdev_ofp_port
6363 && vsp->vid == vid) {
6364 return ofp_port_to_odp_port(vsp->vlandev_ofp_port);
6368 return realdev_odp_port;
6371 static struct vlan_splinter *
6372 vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port)
6374 struct vlan_splinter *vsp;
6376 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0),
6377 &ofproto->vlandev_map) {
6378 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6386 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6387 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6388 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6389 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6390 * eth0 and store 9 in '*vid'.
6392 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6393 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6396 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6397 uint16_t vlandev_ofp_port, int *vid)
6399 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6400 const struct vlan_splinter *vsp;
6402 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6407 return vsp->realdev_ofp_port;
6414 vsp_remove(struct ofport_dpif *port)
6416 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6417 struct vlan_splinter *vsp;
6419 vsp = vlandev_find(ofproto, port->up.ofp_port);
6421 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6422 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6425 port->realdev_ofp_port = 0;
6427 VLOG_ERR("missing vlan device record");
6432 vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
6434 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6436 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6437 && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid))
6438 == realdev_ofp_port)) {
6439 struct vlan_splinter *vsp;
6441 vsp = xmalloc(sizeof *vsp);
6442 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6443 hash_int(port->up.ofp_port, 0));
6444 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6445 hash_realdev_vid(realdev_ofp_port, vid));
6446 vsp->realdev_ofp_port = realdev_ofp_port;
6447 vsp->vlandev_ofp_port = port->up.ofp_port;
6450 port->realdev_ofp_port = realdev_ofp_port;
6452 VLOG_ERR("duplicate vlan device record");
6456 const struct ofproto_class ofproto_dpif_class = {
6485 port_is_lacp_current,
6486 NULL, /* rule_choose_table */
6493 rule_modify_actions,
6501 get_cfm_remote_mpids,
6506 get_stp_port_status,
6513 is_mirror_output_bundle,
6514 forward_bpdu_changed,