2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
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"
25 #include "byte-order.h"
30 #include "dynamic-string.h"
31 #include "fail-open.h"
35 #include "mac-learning.h"
36 #include "meta-flow.h"
37 #include "multipath.h"
38 #include "netdev-vport.h"
45 #include "ofp-actions.h"
46 #include "ofp-parse.h"
47 #include "ofp-print.h"
48 #include "ofproto-dpif-governor.h"
49 #include "ofproto-dpif-sflow.h"
50 #include "poll-loop.h"
55 #include "unaligned.h"
57 #include "vlan-bitmap.h"
60 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
62 COVERAGE_DEFINE(ofproto_dpif_expired);
63 COVERAGE_DEFINE(ofproto_dpif_xlate);
64 COVERAGE_DEFINE(facet_changed_rule);
65 COVERAGE_DEFINE(facet_revalidate);
66 COVERAGE_DEFINE(facet_unexpected);
67 COVERAGE_DEFINE(facet_suppress);
69 /* Maximum depth of flow table recursion (due to resubmit actions) in a
70 * flow translation. */
71 #define MAX_RESUBMIT_RECURSION 64
73 /* Number of implemented OpenFlow tables. */
74 enum { N_TABLES = 255 };
75 enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */
76 BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
87 * - Do include packets and bytes from facets that have been deleted or
88 * whose own statistics have been folded into the rule.
90 * - Do include packets and bytes sent "by hand" that were accounted to
91 * the rule without any facet being involved (this is a rare corner
92 * case in rule_execute()).
94 * - Do not include packet or bytes that can be obtained from any facet's
95 * packet_count or byte_count member or that can be obtained from the
96 * datapath by, e.g., dpif_flow_get() for any subfacet.
98 uint64_t packet_count; /* Number of packets received. */
99 uint64_t byte_count; /* Number of bytes received. */
101 tag_type tag; /* Caches rule_calculate_tag() result. */
103 struct list facets; /* List of "struct facet"s. */
106 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
108 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
111 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
112 const struct flow *);
113 static struct rule_dpif *rule_dpif_lookup__(struct ofproto_dpif *,
116 static struct rule_dpif *rule_dpif_miss_rule(struct ofproto_dpif *ofproto,
117 const struct flow *flow);
119 static void rule_credit_stats(struct rule_dpif *,
120 const struct dpif_flow_stats *);
121 static void flow_push_stats(struct rule_dpif *, const struct flow *,
122 const struct dpif_flow_stats *);
123 static tag_type rule_calculate_tag(const struct flow *,
124 const struct minimask *, uint32_t basis);
125 static void rule_invalidate(const struct rule_dpif *);
127 #define MAX_MIRRORS 32
128 typedef uint32_t mirror_mask_t;
129 #define MIRROR_MASK_C(X) UINT32_C(X)
130 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
132 struct ofproto_dpif *ofproto; /* Owning ofproto. */
133 size_t idx; /* In ofproto's "mirrors" array. */
134 void *aux; /* Key supplied by ofproto's client. */
135 char *name; /* Identifier for log messages. */
137 /* Selection criteria. */
138 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
139 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
140 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
142 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
143 struct ofbundle *out; /* Output port or NULL. */
144 int out_vlan; /* Output VLAN or -1. */
145 mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
148 int64_t packet_count; /* Number of packets sent. */
149 int64_t byte_count; /* Number of bytes sent. */
152 static void mirror_destroy(struct ofmirror *);
153 static void update_mirror_stats(struct ofproto_dpif *ofproto,
154 mirror_mask_t mirrors,
155 uint64_t packets, uint64_t bytes);
158 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
159 struct ofproto_dpif *ofproto; /* Owning ofproto. */
160 void *aux; /* Key supplied by ofproto's client. */
161 char *name; /* Identifier for log messages. */
164 struct list ports; /* Contains "struct ofport"s. */
165 enum port_vlan_mode vlan_mode; /* VLAN mode */
166 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
167 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
168 * NULL if all VLANs are trunked. */
169 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
170 struct bond *bond; /* Nonnull iff more than one port. */
171 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
174 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
176 /* Port mirroring info. */
177 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
178 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
179 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
182 static void bundle_remove(struct ofport *);
183 static void bundle_update(struct ofbundle *);
184 static void bundle_destroy(struct ofbundle *);
185 static void bundle_del_port(struct ofport_dpif *);
186 static void bundle_run(struct ofbundle *);
187 static void bundle_wait(struct ofbundle *);
188 static struct ofbundle *lookup_input_bundle(const struct ofproto_dpif *,
189 uint16_t in_port, bool warn,
190 struct ofport_dpif **in_ofportp);
192 /* A controller may use OFPP_NONE as the ingress port to indicate that
193 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
194 * when an input bundle is needed for validation (e.g., mirroring or
195 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
196 * any 'port' structs, so care must be taken when dealing with it. */
197 static struct ofbundle ofpp_none_bundle = {
199 .vlan_mode = PORT_VLAN_TRUNK
202 static void stp_run(struct ofproto_dpif *ofproto);
203 static void stp_wait(struct ofproto_dpif *ofproto);
204 static int set_stp_port(struct ofport *,
205 const struct ofproto_port_stp_settings *);
207 static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan);
209 struct action_xlate_ctx {
210 /* action_xlate_ctx_init() initializes these members. */
213 struct ofproto_dpif *ofproto;
215 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
216 * this flow when actions change header fields. */
219 /* The packet corresponding to 'flow', or a null pointer if we are
220 * revalidating without a packet to refer to. */
221 const struct ofpbuf *packet;
223 /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
224 * actions update the flow table?
226 * We want to update these tables if we are actually processing a packet,
227 * or if we are accounting for packets that the datapath has processed, but
228 * not if we are just revalidating. */
231 /* The rule that we are currently translating, or NULL. */
232 struct rule_dpif *rule;
234 /* Union of the set of TCP flags seen so far in this flow. (Used only by
235 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
239 /* If nonnull, flow translation calls this function just before executing a
240 * resubmit or OFPP_TABLE action. In addition, disables logging of traces
241 * when the recursion depth is exceeded.
243 * 'rule' is the rule being submitted into. It will be null if the
244 * resubmit or OFPP_TABLE action didn't find a matching rule.
246 * This is normally null so the client has to set it manually after
247 * calling action_xlate_ctx_init(). */
248 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *rule);
250 /* If nonnull, flow translation calls this function to report some
251 * significant decision, e.g. to explain why OFPP_NORMAL translation
252 * dropped a packet. */
253 void (*report_hook)(struct action_xlate_ctx *, const char *s);
255 /* If nonnull, flow translation credits the specified statistics to each
256 * rule reached through a resubmit or OFPP_TABLE action.
258 * This is normally null so the client has to set it manually after
259 * calling action_xlate_ctx_init(). */
260 const struct dpif_flow_stats *resubmit_stats;
262 /* xlate_actions() initializes and uses these members. The client might want
263 * to look at them after it returns. */
265 struct ofpbuf *odp_actions; /* Datapath actions. */
266 tag_type tags; /* Tags associated with actions. */
267 enum slow_path_reason slow; /* 0 if fast path may be used. */
268 bool has_learn; /* Actions include NXAST_LEARN? */
269 bool has_normal; /* Actions output to OFPP_NORMAL? */
270 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
271 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
272 mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
274 /* xlate_actions() initializes and uses these members, but the client has no
275 * reason to look at them. */
277 int recurse; /* Recursion level, via xlate_table_action. */
278 bool max_resubmit_trigger; /* Recursed too deeply during translation. */
279 struct flow base_flow; /* Flow at the last commit. */
280 uint32_t orig_skb_priority; /* Priority when packet arrived. */
281 uint8_t table_id; /* OpenFlow table ID where flow was found. */
282 uint32_t sflow_n_outputs; /* Number of output ports. */
283 uint32_t sflow_odp_port; /* Output port for composing sFlow action. */
284 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
285 bool exit; /* No further actions should be processed. */
286 struct flow orig_flow; /* Copy of original flow. */
289 static void action_xlate_ctx_init(struct action_xlate_ctx *,
290 struct ofproto_dpif *, const struct flow *,
291 ovs_be16 initial_tci, struct rule_dpif *,
292 uint8_t tcp_flags, const struct ofpbuf *);
293 static void xlate_actions(struct action_xlate_ctx *,
294 const struct ofpact *ofpacts, size_t ofpacts_len,
295 struct ofpbuf *odp_actions);
296 static void xlate_actions_for_side_effects(struct action_xlate_ctx *,
297 const struct ofpact *ofpacts,
299 static void xlate_table_action(struct action_xlate_ctx *, uint16_t in_port,
300 uint8_t table_id, bool may_packet_in);
302 static size_t put_userspace_action(const struct ofproto_dpif *,
303 struct ofpbuf *odp_actions,
305 const union user_action_cookie *);
307 static void compose_slow_path(const struct ofproto_dpif *, const struct flow *,
308 enum slow_path_reason,
309 uint64_t *stub, size_t stub_size,
310 const struct nlattr **actionsp,
311 size_t *actions_lenp);
313 static void xlate_report(struct action_xlate_ctx *ctx, const char *s);
315 /* A subfacet (see "struct subfacet" below) has three possible installation
318 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
319 * case just after the subfacet is created, just before the subfacet is
320 * destroyed, or if the datapath returns an error when we try to install a
323 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
325 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
326 * ofproto_dpif is installed in the datapath.
329 SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */
330 SF_FAST_PATH, /* Full actions are installed. */
331 SF_SLOW_PATH, /* Send-to-userspace action is installed. */
334 static const char *subfacet_path_to_string(enum subfacet_path);
336 /* A dpif flow and actions associated with a facet.
338 * See also the large comment on struct facet. */
341 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
342 struct list list_node; /* In struct facet's 'facets' list. */
343 struct facet *facet; /* Owning facet. */
347 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
348 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
349 * regenerate the ODP flow key from ->facet->flow. */
350 enum odp_key_fitness key_fitness;
354 long long int used; /* Time last used; time created if not used. */
356 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
357 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
361 * These should be essentially identical for every subfacet in a facet, but
362 * may differ in trivial ways due to VLAN splinters. */
363 size_t actions_len; /* Number of bytes in actions[]. */
364 struct nlattr *actions; /* Datapath actions. */
366 enum slow_path_reason slow; /* 0 if fast path may be used. */
367 enum subfacet_path path; /* Installed in datapath? */
369 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
370 * splinters can cause it to differ. This value should be removed when
371 * the VLAN splinters feature is no longer needed. */
372 ovs_be16 initial_tci; /* Initial VLAN TCI value. */
374 /* Datapath port the packet arrived on. This is needed to remove
375 * flows for ports that are no longer part of the bridge. Since the
376 * flow definition only has the OpenFlow port number and the port is
377 * no longer part of the bridge, we can't determine the datapath port
378 * number needed to delete the flow from the datapath. */
379 uint32_t odp_in_port;
382 #define SUBFACET_DESTROY_MAX_BATCH 50
384 static struct subfacet *subfacet_create(struct facet *, struct flow_miss *miss,
386 static struct subfacet *subfacet_find(struct ofproto_dpif *,
387 const struct nlattr *key, size_t key_len,
389 const struct flow *flow);
390 static void subfacet_destroy(struct subfacet *);
391 static void subfacet_destroy__(struct subfacet *);
392 static void subfacet_destroy_batch(struct ofproto_dpif *,
393 struct subfacet **, int n);
394 static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
396 static void subfacet_reset_dp_stats(struct subfacet *,
397 struct dpif_flow_stats *);
398 static void subfacet_update_time(struct subfacet *, long long int used);
399 static void subfacet_update_stats(struct subfacet *,
400 const struct dpif_flow_stats *);
401 static void subfacet_make_actions(struct subfacet *,
402 const struct ofpbuf *packet,
403 struct ofpbuf *odp_actions);
404 static int subfacet_install(struct subfacet *,
405 const struct nlattr *actions, size_t actions_len,
406 struct dpif_flow_stats *, enum slow_path_reason);
407 static void subfacet_uninstall(struct subfacet *);
409 static enum subfacet_path subfacet_want_path(enum slow_path_reason);
411 /* An exact-match instantiation of an OpenFlow flow.
413 * A facet associates a "struct flow", which represents the Open vSwitch
414 * userspace idea of an exact-match flow, with one or more subfacets. Each
415 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
416 * the facet. When the kernel module (or other dpif implementation) and Open
417 * vSwitch userspace agree on the definition of a flow key, there is exactly
418 * one subfacet per facet. If the dpif implementation supports more-specific
419 * flow matching than userspace, however, a facet can have more than one
420 * subfacet, each of which corresponds to some distinction in flow that
421 * userspace simply doesn't understand.
423 * Flow expiration works in terms of subfacets, so a facet must have at least
424 * one subfacet or it will never expire, leaking memory. */
427 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
428 struct list list_node; /* In owning rule's 'facets' list. */
429 struct rule_dpif *rule; /* Owning rule. */
432 struct list subfacets;
433 long long int used; /* Time last used; time created if not used. */
440 * - Do include packets and bytes sent "by hand", e.g. with
443 * - Do include packets and bytes that were obtained from the datapath
444 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
445 * DPIF_FP_ZERO_STATS).
447 * - Do not include packets or bytes that can be obtained from the
448 * datapath for any existing subfacet.
450 uint64_t packet_count; /* Number of packets received. */
451 uint64_t byte_count; /* Number of bytes received. */
453 /* Resubmit statistics. */
454 uint64_t prev_packet_count; /* Number of packets from last stats push. */
455 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
456 long long int prev_used; /* Used time from last stats push. */
459 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
460 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
461 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
463 /* Properties of datapath actions.
465 * Every subfacet has its own actions because actions can differ slightly
466 * between splintered and non-splintered subfacets due to the VLAN tag
467 * being initially different (present vs. absent). All of them have these
468 * properties in common so we just store one copy of them here. */
469 bool has_learn; /* Actions include NXAST_LEARN? */
470 bool has_normal; /* Actions output to OFPP_NORMAL? */
471 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
472 tag_type tags; /* Tags that would require revalidation. */
473 mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
475 /* Storage for a single subfacet, to reduce malloc() time and space
476 * overhead. (A facet always has at least one subfacet and in the common
477 * case has exactly one subfacet.) */
478 struct subfacet one_subfacet;
481 static struct facet *facet_create(struct rule_dpif *,
482 const struct flow *, uint32_t hash);
483 static void facet_remove(struct facet *);
484 static void facet_free(struct facet *);
486 static struct facet *facet_find(struct ofproto_dpif *,
487 const struct flow *, uint32_t hash);
488 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
489 const struct flow *, uint32_t hash);
490 static void facet_revalidate(struct facet *);
491 static bool facet_check_consistency(struct facet *);
493 static void facet_flush_stats(struct facet *);
495 static void facet_update_time(struct facet *, long long int used);
496 static void facet_reset_counters(struct facet *);
497 static void facet_push_stats(struct facet *);
498 static void facet_learn(struct facet *);
499 static void facet_account(struct facet *);
501 static bool facet_is_controller_flow(struct facet *);
504 struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
508 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
509 struct list bundle_node; /* In struct ofbundle's "ports" list. */
510 struct cfm *cfm; /* Connectivity Fault Management, if any. */
511 tag_type tag; /* Tag associated with this port. */
512 bool may_enable; /* May be enabled in bonds. */
513 long long int carrier_seq; /* Carrier status changes. */
514 struct tnl_port *tnl_port; /* Tunnel handle, or null. */
517 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
518 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
519 long long int stp_state_entered;
521 struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
523 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
525 * This is deprecated. It is only for compatibility with broken device
526 * drivers in old versions of Linux that do not properly support VLANs when
527 * VLAN devices are not used. When broken device drivers are no longer in
528 * widespread use, we will delete these interfaces. */
529 uint16_t realdev_ofp_port;
533 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
534 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
535 * traffic egressing the 'ofport' with that priority should be marked with. */
536 struct priority_to_dscp {
537 struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */
538 uint32_t priority; /* Priority of this queue (see struct flow). */
540 uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */
543 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
545 * This is deprecated. It is only for compatibility with broken device drivers
546 * in old versions of Linux that do not properly support VLANs when VLAN
547 * devices are not used. When broken device drivers are no longer in
548 * widespread use, we will delete these interfaces. */
549 struct vlan_splinter {
550 struct hmap_node realdev_vid_node;
551 struct hmap_node vlandev_node;
552 uint16_t realdev_ofp_port;
553 uint16_t vlandev_ofp_port;
557 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
558 uint32_t realdev, ovs_be16 vlan_tci);
559 static bool vsp_adjust_flow(const struct ofproto_dpif *, struct flow *);
560 static void vsp_remove(struct ofport_dpif *);
561 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
563 static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif *,
565 static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif *,
568 static struct ofport_dpif *
569 ofport_dpif_cast(const struct ofport *ofport)
571 ovs_assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
572 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
575 static void port_run(struct ofport_dpif *);
576 static void port_run_fast(struct ofport_dpif *);
577 static void port_wait(struct ofport_dpif *);
578 static int set_cfm(struct ofport *, const struct cfm_settings *);
579 static void ofport_clear_priorities(struct ofport_dpif *);
581 struct dpif_completion {
582 struct list list_node;
583 struct ofoperation *op;
586 /* Extra information about a classifier table.
587 * Currently used just for optimized flow revalidation. */
589 /* If either of these is nonnull, then this table has a form that allows
590 * flows to be tagged to avoid revalidating most flows for the most common
591 * kinds of flow table changes. */
592 struct cls_table *catchall_table; /* Table that wildcards all fields. */
593 struct cls_table *other_table; /* Table with any other wildcard set. */
594 uint32_t basis; /* Keeps each table's tags separate. */
597 /* Reasons that we might need to revalidate every facet, and corresponding
600 * A value of 0 means that there is no need to revalidate.
602 * It would be nice to have some cleaner way to integrate with coverage
603 * counters, but with only a few reasons I guess this is good enough for
605 enum revalidate_reason {
606 REV_RECONFIGURE = 1, /* Switch configuration changed. */
607 REV_STP, /* Spanning tree protocol port status change. */
608 REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
609 REV_FLOW_TABLE, /* Flow table changed. */
610 REV_INCONSISTENCY /* Facet self-check failed. */
612 COVERAGE_DEFINE(rev_reconfigure);
613 COVERAGE_DEFINE(rev_stp);
614 COVERAGE_DEFINE(rev_port_toggled);
615 COVERAGE_DEFINE(rev_flow_table);
616 COVERAGE_DEFINE(rev_inconsistency);
618 /* Drop keys are odp flow keys which have drop flows installed in the kernel.
619 * These are datapath flows which have no associated ofproto, if they did we
620 * would use facets. */
622 struct hmap_node hmap_node;
627 /* All datapaths of a given type share a single dpif backer instance. */
632 struct timer next_expiration;
633 struct hmap odp_to_ofport_map; /* ODP port to ofport mapping. */
635 struct sset tnl_backers; /* Set of dpif ports backing tunnels. */
637 /* Facet revalidation flags applying to facets which use this backer. */
638 enum revalidate_reason need_revalidate; /* Revalidate every facet. */
639 struct tag_set revalidate_set; /* Revalidate only matching facets. */
641 struct hmap drop_keys; /* Set of dropped odp keys. */
644 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
645 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
647 static void drop_key_clear(struct dpif_backer *);
648 static struct ofport_dpif *
649 odp_port_to_ofport(const struct dpif_backer *, uint32_t odp_port);
651 struct ofproto_dpif {
652 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
654 struct dpif_backer *backer;
656 /* Special OpenFlow rules. */
657 struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
658 struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
664 struct netflow *netflow;
665 struct dpif_sflow *sflow;
666 struct hmap bundles; /* Contains "struct ofbundle"s. */
667 struct mac_learning *ml;
668 struct ofmirror *mirrors[MAX_MIRRORS];
670 bool has_bonded_bundles;
674 struct hmap subfacets;
675 struct governor *governor;
678 struct table_dpif tables[N_TABLES];
680 /* Support for debugging async flow mods. */
681 struct list completions;
683 bool has_bundle_action; /* True when the first bundle action appears. */
684 struct netdev_stats stats; /* To account packets generated and consumed in
689 long long int stp_last_tick;
691 /* VLAN splinters. */
692 struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
693 struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
696 struct sset ports; /* Set of standard port names. */
697 struct sset ghost_ports; /* Ports with no datapath port. */
698 struct sset port_poll_set; /* Queued names for port_poll() reply. */
699 int port_poll_errno; /* Last errno for port_poll() reply. */
702 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
703 * for debugging the asynchronous flow_mod implementation.) */
706 /* All existing ofproto_dpif instances, indexed by ->up.name. */
707 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
709 static void ofproto_dpif_unixctl_init(void);
711 static struct ofproto_dpif *
712 ofproto_dpif_cast(const struct ofproto *ofproto)
714 ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
715 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
718 static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *,
720 static struct ofport_dpif *get_odp_port(const struct ofproto_dpif *,
722 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
723 const struct ofpbuf *, ovs_be16 initial_tci,
725 static bool may_dpif_port_del(struct ofport_dpif *);
727 /* Packet processing. */
728 static void update_learning_table(struct ofproto_dpif *,
729 const struct flow *, int vlan,
732 #define FLOW_MISS_MAX_BATCH 50
733 static int handle_upcalls(struct dpif_backer *, unsigned int max_batch);
735 /* Flow expiration. */
736 static int expire(struct dpif_backer *);
739 static void send_netflow_active_timeouts(struct ofproto_dpif *);
742 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
743 static size_t compose_sflow_action(const struct ofproto_dpif *,
744 struct ofpbuf *odp_actions,
745 const struct flow *, uint32_t odp_port);
746 static void add_mirror_actions(struct action_xlate_ctx *ctx,
747 const struct flow *flow);
748 /* Global variables. */
749 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
751 /* Initial mappings of port to bridge mappings. */
752 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
754 /* Factory functions. */
757 init(const struct shash *iface_hints)
759 struct shash_node *node;
761 /* Make a local copy, since we don't own 'iface_hints' elements. */
762 SHASH_FOR_EACH(node, iface_hints) {
763 const struct iface_hint *orig_hint = node->data;
764 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
766 new_hint->br_name = xstrdup(orig_hint->br_name);
767 new_hint->br_type = xstrdup(orig_hint->br_type);
768 new_hint->ofp_port = orig_hint->ofp_port;
770 shash_add(&init_ofp_ports, node->name, new_hint);
775 enumerate_types(struct sset *types)
777 dp_enumerate_types(types);
781 enumerate_names(const char *type, struct sset *names)
783 struct ofproto_dpif *ofproto;
786 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
787 if (strcmp(type, ofproto->up.type)) {
790 sset_add(names, ofproto->up.name);
797 del(const char *type, const char *name)
802 error = dpif_open(name, type, &dpif);
804 error = dpif_delete(dpif);
811 port_open_type(const char *datapath_type, const char *port_type)
813 return dpif_port_open_type(datapath_type, port_type);
816 /* Type functions. */
818 static struct ofproto_dpif *
819 lookup_ofproto_dpif_by_port_name(const char *name)
821 struct ofproto_dpif *ofproto;
823 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
824 if (sset_contains(&ofproto->ports, name)) {
833 type_run(const char *type)
835 struct dpif_backer *backer;
839 backer = shash_find_data(&all_dpif_backers, type);
841 /* This is not necessarily a problem, since backers are only
842 * created on demand. */
846 dpif_run(backer->dpif);
848 if (backer->need_revalidate
849 || !tag_set_is_empty(&backer->revalidate_set)) {
850 struct tag_set revalidate_set = backer->revalidate_set;
851 bool need_revalidate = backer->need_revalidate;
852 struct ofproto_dpif *ofproto;
854 switch (backer->need_revalidate) {
855 case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
856 case REV_STP: COVERAGE_INC(rev_stp); break;
857 case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
858 case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
859 case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
862 if (backer->need_revalidate) {
863 /* Clear the drop_keys in case we should now be accepting some
864 * formerly dropped flows. */
865 drop_key_clear(backer);
868 /* Clear the revalidation flags. */
869 tag_set_init(&backer->revalidate_set);
870 backer->need_revalidate = 0;
872 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
875 if (ofproto->backer != backer) {
879 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
881 || tag_set_intersects(&revalidate_set, facet->tags)) {
882 facet_revalidate(facet);
888 if (timer_expired(&backer->next_expiration)) {
889 int delay = expire(backer);
890 timer_set_duration(&backer->next_expiration, delay);
893 /* Check for port changes in the dpif. */
894 while ((error = dpif_port_poll(backer->dpif, &devname)) == 0) {
895 struct ofproto_dpif *ofproto;
896 struct dpif_port port;
898 /* Don't report on the datapath's device. */
899 if (!strcmp(devname, dpif_base_name(backer->dpif))) {
903 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
904 &all_ofproto_dpifs) {
905 if (sset_contains(&ofproto->backer->tnl_backers, devname)) {
910 ofproto = lookup_ofproto_dpif_by_port_name(devname);
911 if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
912 /* The port was removed. If we know the datapath,
913 * report it through poll_set(). If we don't, it may be
914 * notifying us of a removal we initiated, so ignore it.
915 * If there's a pending ENOBUFS, let it stand, since
916 * everything will be reevaluated. */
917 if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
918 sset_add(&ofproto->port_poll_set, devname);
919 ofproto->port_poll_errno = 0;
921 } else if (!ofproto) {
922 /* The port was added, but we don't know with which
923 * ofproto we should associate it. Delete it. */
924 dpif_port_del(backer->dpif, port.port_no);
926 dpif_port_destroy(&port);
932 if (error != EAGAIN) {
933 struct ofproto_dpif *ofproto;
935 /* There was some sort of error, so propagate it to all
936 * ofprotos that use this backer. */
937 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
938 &all_ofproto_dpifs) {
939 if (ofproto->backer == backer) {
940 sset_clear(&ofproto->port_poll_set);
941 ofproto->port_poll_errno = error;
950 type_run_fast(const char *type)
952 struct dpif_backer *backer;
955 backer = shash_find_data(&all_dpif_backers, type);
957 /* This is not necessarily a problem, since backers are only
958 * created on demand. */
962 /* Handle one or more batches of upcalls, until there's nothing left to do
963 * or until we do a fixed total amount of work.
965 * We do work in batches because it can be much cheaper to set up a number
966 * of flows and fire off their patches all at once. We do multiple batches
967 * because in some cases handling a packet can cause another packet to be
968 * queued almost immediately as part of the return flow. Both
969 * optimizations can make major improvements on some benchmarks and
970 * presumably for real traffic as well. */
972 while (work < FLOW_MISS_MAX_BATCH) {
973 int retval = handle_upcalls(backer, FLOW_MISS_MAX_BATCH - work);
984 type_wait(const char *type)
986 struct dpif_backer *backer;
988 backer = shash_find_data(&all_dpif_backers, type);
990 /* This is not necessarily a problem, since backers are only
991 * created on demand. */
995 timer_wait(&backer->next_expiration);
998 /* Basic life-cycle. */
1000 static int add_internal_flows(struct ofproto_dpif *);
1002 static struct ofproto *
1005 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
1006 return &ofproto->up;
1010 dealloc(struct ofproto *ofproto_)
1012 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1017 close_dpif_backer(struct dpif_backer *backer)
1019 struct shash_node *node;
1021 ovs_assert(backer->refcount > 0);
1023 if (--backer->refcount) {
1027 drop_key_clear(backer);
1028 hmap_destroy(&backer->drop_keys);
1030 sset_destroy(&backer->tnl_backers);
1031 hmap_destroy(&backer->odp_to_ofport_map);
1032 node = shash_find(&all_dpif_backers, backer->type);
1034 shash_delete(&all_dpif_backers, node);
1035 dpif_close(backer->dpif);
1040 /* Datapath port slated for removal from datapath. */
1041 struct odp_garbage {
1042 struct list list_node;
1047 open_dpif_backer(const char *type, struct dpif_backer **backerp)
1049 struct dpif_backer *backer;
1050 struct dpif_port_dump port_dump;
1051 struct dpif_port port;
1052 struct shash_node *node;
1053 struct list garbage_list;
1054 struct odp_garbage *garbage, *next;
1060 backer = shash_find_data(&all_dpif_backers, type);
1067 backer_name = xasprintf("ovs-%s", type);
1069 /* Remove any existing datapaths, since we assume we're the only
1070 * userspace controlling the datapath. */
1072 dp_enumerate_names(type, &names);
1073 SSET_FOR_EACH(name, &names) {
1074 struct dpif *old_dpif;
1076 /* Don't remove our backer if it exists. */
1077 if (!strcmp(name, backer_name)) {
1081 if (dpif_open(name, type, &old_dpif)) {
1082 VLOG_WARN("couldn't open old datapath %s to remove it", name);
1084 dpif_delete(old_dpif);
1085 dpif_close(old_dpif);
1088 sset_destroy(&names);
1090 backer = xmalloc(sizeof *backer);
1092 error = dpif_create_and_open(backer_name, type, &backer->dpif);
1095 VLOG_ERR("failed to open datapath of type %s: %s", type,
1101 backer->type = xstrdup(type);
1102 backer->refcount = 1;
1103 hmap_init(&backer->odp_to_ofport_map);
1104 hmap_init(&backer->drop_keys);
1105 timer_set_duration(&backer->next_expiration, 1000);
1106 backer->need_revalidate = 0;
1107 sset_init(&backer->tnl_backers);
1108 tag_set_init(&backer->revalidate_set);
1111 dpif_flow_flush(backer->dpif);
1113 /* Loop through the ports already on the datapath and remove any
1114 * that we don't need anymore. */
1115 list_init(&garbage_list);
1116 dpif_port_dump_start(&port_dump, backer->dpif);
1117 while (dpif_port_dump_next(&port_dump, &port)) {
1118 node = shash_find(&init_ofp_ports, port.name);
1119 if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
1120 garbage = xmalloc(sizeof *garbage);
1121 garbage->odp_port = port.port_no;
1122 list_push_front(&garbage_list, &garbage->list_node);
1125 dpif_port_dump_done(&port_dump);
1127 LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
1128 dpif_port_del(backer->dpif, garbage->odp_port);
1129 list_remove(&garbage->list_node);
1133 shash_add(&all_dpif_backers, type, backer);
1135 error = dpif_recv_set(backer->dpif, true);
1137 VLOG_ERR("failed to listen on datapath of type %s: %s",
1138 type, strerror(error));
1139 close_dpif_backer(backer);
1147 construct(struct ofproto *ofproto_)
1149 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1150 struct shash_node *node, *next;
1155 error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
1160 max_ports = dpif_get_max_ports(ofproto->backer->dpif);
1161 ofproto_init_max_ports(ofproto_, MIN(max_ports, OFPP_MAX));
1163 ofproto->n_matches = 0;
1165 ofproto->netflow = NULL;
1166 ofproto->sflow = NULL;
1167 ofproto->stp = NULL;
1168 hmap_init(&ofproto->bundles);
1169 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
1170 for (i = 0; i < MAX_MIRRORS; i++) {
1171 ofproto->mirrors[i] = NULL;
1173 ofproto->has_bonded_bundles = false;
1175 hmap_init(&ofproto->facets);
1176 hmap_init(&ofproto->subfacets);
1177 ofproto->governor = NULL;
1179 for (i = 0; i < N_TABLES; i++) {
1180 struct table_dpif *table = &ofproto->tables[i];
1182 table->catchall_table = NULL;
1183 table->other_table = NULL;
1184 table->basis = random_uint32();
1187 list_init(&ofproto->completions);
1189 ofproto_dpif_unixctl_init();
1191 ofproto->has_mirrors = false;
1192 ofproto->has_bundle_action = false;
1194 hmap_init(&ofproto->vlandev_map);
1195 hmap_init(&ofproto->realdev_vid_map);
1197 sset_init(&ofproto->ports);
1198 sset_init(&ofproto->ghost_ports);
1199 sset_init(&ofproto->port_poll_set);
1200 ofproto->port_poll_errno = 0;
1202 SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
1203 struct iface_hint *iface_hint = node->data;
1205 if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
1206 /* Check if the datapath already has this port. */
1207 if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
1208 sset_add(&ofproto->ports, node->name);
1211 free(iface_hint->br_name);
1212 free(iface_hint->br_type);
1214 shash_delete(&init_ofp_ports, node);
1218 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
1219 hash_string(ofproto->up.name, 0));
1220 memset(&ofproto->stats, 0, sizeof ofproto->stats);
1222 ofproto_init_tables(ofproto_, N_TABLES);
1223 error = add_internal_flows(ofproto);
1224 ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
1230 add_internal_flow(struct ofproto_dpif *ofproto, int id,
1231 const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
1233 struct ofputil_flow_mod fm;
1236 match_init_catchall(&fm.match);
1238 match_set_reg(&fm.match, 0, id);
1239 fm.new_cookie = htonll(0);
1240 fm.cookie = htonll(0);
1241 fm.cookie_mask = htonll(0);
1242 fm.table_id = TBL_INTERNAL;
1243 fm.command = OFPFC_ADD;
1244 fm.idle_timeout = 0;
1245 fm.hard_timeout = 0;
1249 fm.ofpacts = ofpacts->data;
1250 fm.ofpacts_len = ofpacts->size;
1252 error = ofproto_flow_mod(&ofproto->up, &fm);
1254 VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
1255 id, ofperr_to_string(error));
1259 *rulep = rule_dpif_lookup__(ofproto, &fm.match.flow, TBL_INTERNAL);
1260 ovs_assert(*rulep != NULL);
1266 add_internal_flows(struct ofproto_dpif *ofproto)
1268 struct ofpact_controller *controller;
1269 uint64_t ofpacts_stub[128 / 8];
1270 struct ofpbuf ofpacts;
1274 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
1277 controller = ofpact_put_CONTROLLER(&ofpacts);
1278 controller->max_len = UINT16_MAX;
1279 controller->controller_id = 0;
1280 controller->reason = OFPR_NO_MATCH;
1281 ofpact_pad(&ofpacts);
1283 error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
1288 ofpbuf_clear(&ofpacts);
1289 error = add_internal_flow(ofproto, id++, &ofpacts,
1290 &ofproto->no_packet_in_rule);
1295 complete_operations(struct ofproto_dpif *ofproto)
1297 struct dpif_completion *c, *next;
1299 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
1300 ofoperation_complete(c->op, 0);
1301 list_remove(&c->list_node);
1307 destruct(struct ofproto *ofproto_)
1309 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1310 struct rule_dpif *rule, *next_rule;
1311 struct oftable *table;
1314 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
1315 complete_operations(ofproto);
1317 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1318 struct cls_cursor cursor;
1320 cls_cursor_init(&cursor, &table->cls, NULL);
1321 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1322 ofproto_rule_destroy(&rule->up);
1326 for (i = 0; i < MAX_MIRRORS; i++) {
1327 mirror_destroy(ofproto->mirrors[i]);
1330 netflow_destroy(ofproto->netflow);
1331 dpif_sflow_destroy(ofproto->sflow);
1332 hmap_destroy(&ofproto->bundles);
1333 mac_learning_destroy(ofproto->ml);
1335 hmap_destroy(&ofproto->facets);
1336 hmap_destroy(&ofproto->subfacets);
1337 governor_destroy(ofproto->governor);
1339 hmap_destroy(&ofproto->vlandev_map);
1340 hmap_destroy(&ofproto->realdev_vid_map);
1342 sset_destroy(&ofproto->ports);
1343 sset_destroy(&ofproto->ghost_ports);
1344 sset_destroy(&ofproto->port_poll_set);
1346 close_dpif_backer(ofproto->backer);
1350 run_fast(struct ofproto *ofproto_)
1352 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1353 struct ofport_dpif *ofport;
1355 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1356 port_run_fast(ofport);
1363 run(struct ofproto *ofproto_)
1365 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1366 struct ofport_dpif *ofport;
1367 struct ofbundle *bundle;
1371 complete_operations(ofproto);
1374 error = run_fast(ofproto_);
1379 if (ofproto->netflow) {
1380 if (netflow_run(ofproto->netflow)) {
1381 send_netflow_active_timeouts(ofproto);
1384 if (ofproto->sflow) {
1385 dpif_sflow_run(ofproto->sflow);
1388 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1391 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1396 mac_learning_run(ofproto->ml, &ofproto->backer->revalidate_set);
1398 /* Check the consistency of a random facet, to aid debugging. */
1399 if (!hmap_is_empty(&ofproto->facets)
1400 && !ofproto->backer->need_revalidate) {
1401 struct facet *facet;
1403 facet = CONTAINER_OF(hmap_random_node(&ofproto->facets),
1404 struct facet, hmap_node);
1405 if (!tag_set_intersects(&ofproto->backer->revalidate_set,
1407 if (!facet_check_consistency(facet)) {
1408 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
1413 if (ofproto->governor) {
1416 governor_run(ofproto->governor);
1418 /* If the governor has shrunk to its minimum size and the number of
1419 * subfacets has dwindled, then drop the governor entirely.
1421 * For hysteresis, the number of subfacets to drop the governor is
1422 * smaller than the number needed to trigger its creation. */
1423 n_subfacets = hmap_count(&ofproto->subfacets);
1424 if (n_subfacets * 4 < ofproto->up.flow_eviction_threshold
1425 && governor_is_idle(ofproto->governor)) {
1426 governor_destroy(ofproto->governor);
1427 ofproto->governor = NULL;
1435 wait(struct ofproto *ofproto_)
1437 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1438 struct ofport_dpif *ofport;
1439 struct ofbundle *bundle;
1441 if (!clogged && !list_is_empty(&ofproto->completions)) {
1442 poll_immediate_wake();
1445 dpif_wait(ofproto->backer->dpif);
1446 dpif_recv_wait(ofproto->backer->dpif);
1447 if (ofproto->sflow) {
1448 dpif_sflow_wait(ofproto->sflow);
1450 if (!tag_set_is_empty(&ofproto->backer->revalidate_set)) {
1451 poll_immediate_wake();
1453 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1456 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1457 bundle_wait(bundle);
1459 if (ofproto->netflow) {
1460 netflow_wait(ofproto->netflow);
1462 mac_learning_wait(ofproto->ml);
1464 if (ofproto->backer->need_revalidate) {
1465 /* Shouldn't happen, but if it does just go around again. */
1466 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
1467 poll_immediate_wake();
1469 if (ofproto->governor) {
1470 governor_wait(ofproto->governor);
1475 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
1477 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1479 simap_increase(usage, "facets", hmap_count(&ofproto->facets));
1480 simap_increase(usage, "subfacets", hmap_count(&ofproto->subfacets));
1484 flush(struct ofproto *ofproto_)
1486 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1487 struct subfacet *subfacet, *next_subfacet;
1488 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
1492 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
1493 &ofproto->subfacets) {
1494 if (subfacet->path != SF_NOT_INSTALLED) {
1495 batch[n_batch++] = subfacet;
1496 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
1497 subfacet_destroy_batch(ofproto, batch, n_batch);
1501 subfacet_destroy(subfacet);
1506 subfacet_destroy_batch(ofproto, batch, n_batch);
1511 get_features(struct ofproto *ofproto_ OVS_UNUSED,
1512 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
1514 *arp_match_ip = true;
1515 *actions = (OFPUTIL_A_OUTPUT |
1516 OFPUTIL_A_SET_VLAN_VID |
1517 OFPUTIL_A_SET_VLAN_PCP |
1518 OFPUTIL_A_STRIP_VLAN |
1519 OFPUTIL_A_SET_DL_SRC |
1520 OFPUTIL_A_SET_DL_DST |
1521 OFPUTIL_A_SET_NW_SRC |
1522 OFPUTIL_A_SET_NW_DST |
1523 OFPUTIL_A_SET_NW_TOS |
1524 OFPUTIL_A_SET_TP_SRC |
1525 OFPUTIL_A_SET_TP_DST |
1530 get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
1532 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1533 struct dpif_dp_stats s;
1535 strcpy(ots->name, "classifier");
1537 dpif_get_dp_stats(ofproto->backer->dpif, &s);
1539 ots->lookup_count = htonll(s.n_hit + s.n_missed);
1540 ots->matched_count = htonll(s.n_hit + ofproto->n_matches);
1543 static struct ofport *
1546 struct ofport_dpif *port = xmalloc(sizeof *port);
1551 port_dealloc(struct ofport *port_)
1553 struct ofport_dpif *port = ofport_dpif_cast(port_);
1558 port_construct(struct ofport *port_)
1560 struct ofport_dpif *port = ofport_dpif_cast(port_);
1561 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1562 const struct netdev *netdev = port->up.netdev;
1563 struct dpif_port dpif_port;
1566 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1567 port->bundle = NULL;
1569 port->tag = tag_create_random();
1570 port->may_enable = true;
1571 port->stp_port = NULL;
1572 port->stp_state = STP_DISABLED;
1573 port->tnl_port = NULL;
1574 hmap_init(&port->priorities);
1575 port->realdev_ofp_port = 0;
1576 port->vlandev_vid = 0;
1577 port->carrier_seq = netdev_get_carrier_resets(netdev);
1579 if (netdev_vport_is_patch(netdev)) {
1580 /* XXX By bailing out here, we don't do required sFlow work. */
1581 port->odp_port = OVSP_NONE;
1585 error = dpif_port_query_by_name(ofproto->backer->dpif,
1586 netdev_vport_get_dpif_port(netdev),
1592 port->odp_port = dpif_port.port_no;
1594 if (netdev_get_tunnel_config(netdev)) {
1595 port->tnl_port = tnl_port_add(&port->up, port->odp_port);
1597 /* Sanity-check that a mapping doesn't already exist. This
1598 * shouldn't happen for non-tunnel ports. */
1599 if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
1600 VLOG_ERR("port %s already has an OpenFlow port number",
1602 dpif_port_destroy(&dpif_port);
1606 hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
1607 hash_int(port->odp_port, 0));
1609 dpif_port_destroy(&dpif_port);
1611 if (ofproto->sflow) {
1612 dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
1619 port_destruct(struct ofport *port_)
1621 struct ofport_dpif *port = ofport_dpif_cast(port_);
1622 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1623 const char *dp_port_name = netdev_vport_get_dpif_port(port->up.netdev);
1624 const char *devname = netdev_get_name(port->up.netdev);
1626 if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)
1627 && may_dpif_port_del(port)) {
1628 /* The underlying device is still there, so delete it. This
1629 * happens when the ofproto is being destroyed, since the caller
1630 * assumes that removal of attached ports will happen as part of
1632 dpif_port_del(ofproto->backer->dpif, port->odp_port);
1633 sset_find_and_delete(&ofproto->backer->tnl_backers, dp_port_name);
1636 if (port->odp_port != OVSP_NONE && !port->tnl_port) {
1637 hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
1640 tnl_port_del(port->tnl_port);
1641 sset_find_and_delete(&ofproto->ports, devname);
1642 sset_find_and_delete(&ofproto->ghost_ports, devname);
1643 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1644 bundle_remove(port_);
1645 set_cfm(port_, NULL);
1646 if (ofproto->sflow) {
1647 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1650 ofport_clear_priorities(port);
1651 hmap_destroy(&port->priorities);
1655 port_modified(struct ofport *port_)
1657 struct ofport_dpif *port = ofport_dpif_cast(port_);
1659 if (port->bundle && port->bundle->bond) {
1660 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1665 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1667 struct ofport_dpif *port = ofport_dpif_cast(port_);
1668 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1669 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1671 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1672 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
1673 OFPUTIL_PC_NO_PACKET_IN)) {
1674 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1676 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1677 bundle_update(port->bundle);
1683 set_sflow(struct ofproto *ofproto_,
1684 const struct ofproto_sflow_options *sflow_options)
1686 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1687 struct dpif_sflow *ds = ofproto->sflow;
1689 if (sflow_options) {
1691 struct ofport_dpif *ofport;
1693 ds = ofproto->sflow = dpif_sflow_create();
1694 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1695 dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
1697 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1699 dpif_sflow_set_options(ds, sflow_options);
1702 dpif_sflow_destroy(ds);
1703 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1704 ofproto->sflow = NULL;
1711 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1713 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1720 struct ofproto_dpif *ofproto;
1722 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1723 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1724 ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
1727 if (cfm_configure(ofport->cfm, s)) {
1733 cfm_destroy(ofport->cfm);
1739 get_cfm_fault(const struct ofport *ofport_)
1741 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1743 return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
1747 get_cfm_opup(const struct ofport *ofport_)
1749 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1751 return ofport->cfm ? cfm_get_opup(ofport->cfm) : -1;
1755 get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
1758 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1761 cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
1769 get_cfm_health(const struct ofport *ofport_)
1771 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1773 return ofport->cfm ? cfm_get_health(ofport->cfm) : -1;
1776 /* Spanning Tree. */
1779 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
1781 struct ofproto_dpif *ofproto = ofproto_;
1782 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
1783 struct ofport_dpif *ofport;
1785 ofport = stp_port_get_aux(sp);
1787 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
1788 ofproto->up.name, port_num);
1790 struct eth_header *eth = pkt->l2;
1792 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
1793 if (eth_addr_is_zero(eth->eth_src)) {
1794 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
1795 "with unknown MAC", ofproto->up.name, port_num);
1797 send_packet(ofport, pkt);
1803 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1805 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
1807 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1809 /* Only revalidate flows if the configuration changed. */
1810 if (!s != !ofproto->stp) {
1811 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1815 if (!ofproto->stp) {
1816 ofproto->stp = stp_create(ofproto_->name, s->system_id,
1817 send_bpdu_cb, ofproto);
1818 ofproto->stp_last_tick = time_msec();
1821 stp_set_bridge_id(ofproto->stp, s->system_id);
1822 stp_set_bridge_priority(ofproto->stp, s->priority);
1823 stp_set_hello_time(ofproto->stp, s->hello_time);
1824 stp_set_max_age(ofproto->stp, s->max_age);
1825 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
1827 struct ofport *ofport;
1829 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
1830 set_stp_port(ofport, NULL);
1833 stp_destroy(ofproto->stp);
1834 ofproto->stp = NULL;
1841 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
1843 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1847 s->bridge_id = stp_get_bridge_id(ofproto->stp);
1848 s->designated_root = stp_get_designated_root(ofproto->stp);
1849 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
1858 update_stp_port_state(struct ofport_dpif *ofport)
1860 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1861 enum stp_state state;
1863 /* Figure out new state. */
1864 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
1868 if (ofport->stp_state != state) {
1869 enum ofputil_port_state of_state;
1872 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
1873 netdev_get_name(ofport->up.netdev),
1874 stp_state_name(ofport->stp_state),
1875 stp_state_name(state));
1876 if (stp_learn_in_state(ofport->stp_state)
1877 != stp_learn_in_state(state)) {
1878 /* xxx Learning action flows should also be flushed. */
1879 mac_learning_flush(ofproto->ml,
1880 &ofproto->backer->revalidate_set);
1882 fwd_change = stp_forward_in_state(ofport->stp_state)
1883 != stp_forward_in_state(state);
1885 ofproto->backer->need_revalidate = REV_STP;
1886 ofport->stp_state = state;
1887 ofport->stp_state_entered = time_msec();
1889 if (fwd_change && ofport->bundle) {
1890 bundle_update(ofport->bundle);
1893 /* Update the STP state bits in the OpenFlow port description. */
1894 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
1895 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
1896 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
1897 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
1898 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
1900 ofproto_port_set_state(&ofport->up, of_state);
1904 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1905 * caller is responsible for assigning STP port numbers and ensuring
1906 * there are no duplicates. */
1908 set_stp_port(struct ofport *ofport_,
1909 const struct ofproto_port_stp_settings *s)
1911 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1912 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1913 struct stp_port *sp = ofport->stp_port;
1915 if (!s || !s->enable) {
1917 ofport->stp_port = NULL;
1918 stp_port_disable(sp);
1919 update_stp_port_state(ofport);
1922 } else if (sp && stp_port_no(sp) != s->port_num
1923 && ofport == stp_port_get_aux(sp)) {
1924 /* The port-id changed, so disable the old one if it's not
1925 * already in use by another port. */
1926 stp_port_disable(sp);
1929 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
1930 stp_port_enable(sp);
1932 stp_port_set_aux(sp, ofport);
1933 stp_port_set_priority(sp, s->priority);
1934 stp_port_set_path_cost(sp, s->path_cost);
1936 update_stp_port_state(ofport);
1942 get_stp_port_status(struct ofport *ofport_,
1943 struct ofproto_port_stp_status *s)
1945 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1946 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1947 struct stp_port *sp = ofport->stp_port;
1949 if (!ofproto->stp || !sp) {
1955 s->port_id = stp_port_get_id(sp);
1956 s->state = stp_port_get_state(sp);
1957 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
1958 s->role = stp_port_get_role(sp);
1959 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
1965 stp_run(struct ofproto_dpif *ofproto)
1968 long long int now = time_msec();
1969 long long int elapsed = now - ofproto->stp_last_tick;
1970 struct stp_port *sp;
1973 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
1974 ofproto->stp_last_tick = now;
1976 while (stp_get_changed_port(ofproto->stp, &sp)) {
1977 struct ofport_dpif *ofport = stp_port_get_aux(sp);
1980 update_stp_port_state(ofport);
1984 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
1985 mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
1991 stp_wait(struct ofproto_dpif *ofproto)
1994 poll_timer_wait(1000);
1998 /* Returns true if STP should process 'flow'. */
2000 stp_should_process_flow(const struct flow *flow)
2002 return eth_addr_equals(flow->dl_dst, eth_addr_stp);
2006 stp_process_packet(const struct ofport_dpif *ofport,
2007 const struct ofpbuf *packet)
2009 struct ofpbuf payload = *packet;
2010 struct eth_header *eth = payload.data;
2011 struct stp_port *sp = ofport->stp_port;
2013 /* Sink packets on ports that have STP disabled when the bridge has
2015 if (!sp || stp_port_get_state(sp) == STP_DISABLED) {
2019 /* Trim off padding on payload. */
2020 if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
2021 payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN;
2024 if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
2025 stp_received_bpdu(sp, payload.data, payload.size);
2029 static struct priority_to_dscp *
2030 get_priority(const struct ofport_dpif *ofport, uint32_t priority)
2032 struct priority_to_dscp *pdscp;
2035 hash = hash_int(priority, 0);
2036 HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &ofport->priorities) {
2037 if (pdscp->priority == priority) {
2045 ofport_clear_priorities(struct ofport_dpif *ofport)
2047 struct priority_to_dscp *pdscp, *next;
2049 HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &ofport->priorities) {
2050 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
2056 set_queues(struct ofport *ofport_,
2057 const struct ofproto_port_queue *qdscp_list,
2060 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2061 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2062 struct hmap new = HMAP_INITIALIZER(&new);
2065 for (i = 0; i < n_qdscp; i++) {
2066 struct priority_to_dscp *pdscp;
2070 dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK;
2071 if (dpif_queue_to_priority(ofproto->backer->dpif, qdscp_list[i].queue,
2076 pdscp = get_priority(ofport, priority);
2078 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
2080 pdscp = xmalloc(sizeof *pdscp);
2081 pdscp->priority = priority;
2083 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2086 if (pdscp->dscp != dscp) {
2088 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2091 hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
2094 if (!hmap_is_empty(&ofport->priorities)) {
2095 ofport_clear_priorities(ofport);
2096 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2099 hmap_swap(&new, &ofport->priorities);
2107 /* Expires all MAC learning entries associated with 'bundle' and forces its
2108 * ofproto to revalidate every flow.
2110 * Normally MAC learning entries are removed only from the ofproto associated
2111 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2112 * are removed from every ofproto. When patch ports and SLB bonds are in use
2113 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2114 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2115 * with the host from which it migrated. */
2117 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
2119 struct ofproto_dpif *ofproto = bundle->ofproto;
2120 struct mac_learning *ml = ofproto->ml;
2121 struct mac_entry *mac, *next_mac;
2123 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2124 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
2125 if (mac->port.p == bundle) {
2127 struct ofproto_dpif *o;
2129 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2131 struct mac_entry *e;
2133 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan,
2136 mac_learning_expire(o->ml, e);
2142 mac_learning_expire(ml, mac);
2147 static struct ofbundle *
2148 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
2150 struct ofbundle *bundle;
2152 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
2153 &ofproto->bundles) {
2154 if (bundle->aux == aux) {
2161 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
2162 * ones that are found to 'bundles'. */
2164 bundle_lookup_multiple(struct ofproto_dpif *ofproto,
2165 void **auxes, size_t n_auxes,
2166 struct hmapx *bundles)
2170 hmapx_init(bundles);
2171 for (i = 0; i < n_auxes; i++) {
2172 struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
2174 hmapx_add(bundles, bundle);
2180 bundle_update(struct ofbundle *bundle)
2182 struct ofport_dpif *port;
2184 bundle->floodable = true;
2185 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2186 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2187 || !stp_forward_in_state(port->stp_state)) {
2188 bundle->floodable = false;
2195 bundle_del_port(struct ofport_dpif *port)
2197 struct ofbundle *bundle = port->bundle;
2199 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2201 list_remove(&port->bundle_node);
2202 port->bundle = NULL;
2205 lacp_slave_unregister(bundle->lacp, port);
2208 bond_slave_unregister(bundle->bond, port);
2211 bundle_update(bundle);
2215 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
2216 struct lacp_slave_settings *lacp)
2218 struct ofport_dpif *port;
2220 port = get_ofp_port(bundle->ofproto, ofp_port);
2225 if (port->bundle != bundle) {
2226 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2228 bundle_del_port(port);
2231 port->bundle = bundle;
2232 list_push_back(&bundle->ports, &port->bundle_node);
2233 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2234 || !stp_forward_in_state(port->stp_state)) {
2235 bundle->floodable = false;
2239 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2240 lacp_slave_register(bundle->lacp, port, lacp);
2247 bundle_destroy(struct ofbundle *bundle)
2249 struct ofproto_dpif *ofproto;
2250 struct ofport_dpif *port, *next_port;
2257 ofproto = bundle->ofproto;
2258 for (i = 0; i < MAX_MIRRORS; i++) {
2259 struct ofmirror *m = ofproto->mirrors[i];
2261 if (m->out == bundle) {
2263 } else if (hmapx_find_and_delete(&m->srcs, bundle)
2264 || hmapx_find_and_delete(&m->dsts, bundle)) {
2265 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2270 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2271 bundle_del_port(port);
2274 bundle_flush_macs(bundle, true);
2275 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
2277 free(bundle->trunks);
2278 lacp_destroy(bundle->lacp);
2279 bond_destroy(bundle->bond);
2284 bundle_set(struct ofproto *ofproto_, void *aux,
2285 const struct ofproto_bundle_settings *s)
2287 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2288 bool need_flush = false;
2289 struct ofport_dpif *port;
2290 struct ofbundle *bundle;
2291 unsigned long *trunks;
2297 bundle_destroy(bundle_lookup(ofproto, aux));
2301 ovs_assert(s->n_slaves == 1 || s->bond != NULL);
2302 ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
2304 bundle = bundle_lookup(ofproto, aux);
2306 bundle = xmalloc(sizeof *bundle);
2308 bundle->ofproto = ofproto;
2309 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
2310 hash_pointer(aux, 0));
2312 bundle->name = NULL;
2314 list_init(&bundle->ports);
2315 bundle->vlan_mode = PORT_VLAN_TRUNK;
2317 bundle->trunks = NULL;
2318 bundle->use_priority_tags = s->use_priority_tags;
2319 bundle->lacp = NULL;
2320 bundle->bond = NULL;
2322 bundle->floodable = true;
2324 bundle->src_mirrors = 0;
2325 bundle->dst_mirrors = 0;
2326 bundle->mirror_out = 0;
2329 if (!bundle->name || strcmp(s->name, bundle->name)) {
2331 bundle->name = xstrdup(s->name);
2336 if (!bundle->lacp) {
2337 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2338 bundle->lacp = lacp_create();
2340 lacp_configure(bundle->lacp, s->lacp);
2342 lacp_destroy(bundle->lacp);
2343 bundle->lacp = NULL;
2346 /* Update set of ports. */
2348 for (i = 0; i < s->n_slaves; i++) {
2349 if (!bundle_add_port(bundle, s->slaves[i],
2350 s->lacp ? &s->lacp_slaves[i] : NULL)) {
2354 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
2355 struct ofport_dpif *next_port;
2357 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2358 for (i = 0; i < s->n_slaves; i++) {
2359 if (s->slaves[i] == port->up.ofp_port) {
2364 bundle_del_port(port);
2368 ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
2370 if (list_is_empty(&bundle->ports)) {
2371 bundle_destroy(bundle);
2375 /* Set VLAN tagging mode */
2376 if (s->vlan_mode != bundle->vlan_mode
2377 || s->use_priority_tags != bundle->use_priority_tags) {
2378 bundle->vlan_mode = s->vlan_mode;
2379 bundle->use_priority_tags = s->use_priority_tags;
2384 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
2385 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
2387 if (vlan != bundle->vlan) {
2388 bundle->vlan = vlan;
2392 /* Get trunked VLANs. */
2393 switch (s->vlan_mode) {
2394 case PORT_VLAN_ACCESS:
2398 case PORT_VLAN_TRUNK:
2399 trunks = CONST_CAST(unsigned long *, s->trunks);
2402 case PORT_VLAN_NATIVE_UNTAGGED:
2403 case PORT_VLAN_NATIVE_TAGGED:
2404 if (vlan != 0 && (!s->trunks
2405 || !bitmap_is_set(s->trunks, vlan)
2406 || bitmap_is_set(s->trunks, 0))) {
2407 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2409 trunks = bitmap_clone(s->trunks, 4096);
2411 trunks = bitmap_allocate1(4096);
2413 bitmap_set1(trunks, vlan);
2414 bitmap_set0(trunks, 0);
2416 trunks = CONST_CAST(unsigned long *, s->trunks);
2423 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
2424 free(bundle->trunks);
2425 if (trunks == s->trunks) {
2426 bundle->trunks = vlan_bitmap_clone(trunks);
2428 bundle->trunks = trunks;
2433 if (trunks != s->trunks) {
2438 if (!list_is_short(&bundle->ports)) {
2439 bundle->ofproto->has_bonded_bundles = true;
2441 if (bond_reconfigure(bundle->bond, s->bond)) {
2442 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2445 bundle->bond = bond_create(s->bond);
2446 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2449 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2450 bond_slave_register(bundle->bond, port, port->up.netdev);
2453 bond_destroy(bundle->bond);
2454 bundle->bond = NULL;
2457 /* If we changed something that would affect MAC learning, un-learn
2458 * everything on this port and force flow revalidation. */
2460 bundle_flush_macs(bundle, false);
2467 bundle_remove(struct ofport *port_)
2469 struct ofport_dpif *port = ofport_dpif_cast(port_);
2470 struct ofbundle *bundle = port->bundle;
2473 bundle_del_port(port);
2474 if (list_is_empty(&bundle->ports)) {
2475 bundle_destroy(bundle);
2476 } else if (list_is_short(&bundle->ports)) {
2477 bond_destroy(bundle->bond);
2478 bundle->bond = NULL;
2484 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
2486 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
2487 struct ofport_dpif *port = port_;
2488 uint8_t ea[ETH_ADDR_LEN];
2491 error = netdev_get_etheraddr(port->up.netdev, ea);
2493 struct ofpbuf packet;
2496 ofpbuf_init(&packet, 0);
2497 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
2499 memcpy(packet_pdu, pdu, pdu_size);
2501 send_packet(port, &packet);
2502 ofpbuf_uninit(&packet);
2504 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
2505 "%s (%s)", port->bundle->name,
2506 netdev_get_name(port->up.netdev), strerror(error));
2511 bundle_send_learning_packets(struct ofbundle *bundle)
2513 struct ofproto_dpif *ofproto = bundle->ofproto;
2514 int error, n_packets, n_errors;
2515 struct mac_entry *e;
2517 error = n_packets = n_errors = 0;
2518 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
2519 if (e->port.p != bundle) {
2520 struct ofpbuf *learning_packet;
2521 struct ofport_dpif *port;
2525 /* The assignment to "port" is unnecessary but makes "grep"ing for
2526 * struct ofport_dpif more effective. */
2527 learning_packet = bond_compose_learning_packet(bundle->bond,
2531 ret = send_packet(port, learning_packet);
2532 ofpbuf_delete(learning_packet);
2542 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2543 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2544 "packets, last error was: %s",
2545 bundle->name, n_errors, n_packets, strerror(error));
2547 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2548 bundle->name, n_packets);
2553 bundle_run(struct ofbundle *bundle)
2556 lacp_run(bundle->lacp, send_pdu_cb);
2559 struct ofport_dpif *port;
2561 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2562 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
2565 bond_run(bundle->bond, &bundle->ofproto->backer->revalidate_set,
2566 lacp_status(bundle->lacp));
2567 if (bond_should_send_learning_packets(bundle->bond)) {
2568 bundle_send_learning_packets(bundle);
2574 bundle_wait(struct ofbundle *bundle)
2577 lacp_wait(bundle->lacp);
2580 bond_wait(bundle->bond);
2587 mirror_scan(struct ofproto_dpif *ofproto)
2591 for (idx = 0; idx < MAX_MIRRORS; idx++) {
2592 if (!ofproto->mirrors[idx]) {
2599 static struct ofmirror *
2600 mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
2604 for (i = 0; i < MAX_MIRRORS; i++) {
2605 struct ofmirror *mirror = ofproto->mirrors[i];
2606 if (mirror && mirror->aux == aux) {
2614 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
2616 mirror_update_dups(struct ofproto_dpif *ofproto)
2620 for (i = 0; i < MAX_MIRRORS; i++) {
2621 struct ofmirror *m = ofproto->mirrors[i];
2624 m->dup_mirrors = MIRROR_MASK_C(1) << i;
2628 for (i = 0; i < MAX_MIRRORS; i++) {
2629 struct ofmirror *m1 = ofproto->mirrors[i];
2636 for (j = i + 1; j < MAX_MIRRORS; j++) {
2637 struct ofmirror *m2 = ofproto->mirrors[j];
2639 if (m2 && m1->out == m2->out && m1->out_vlan == m2->out_vlan) {
2640 m1->dup_mirrors |= MIRROR_MASK_C(1) << j;
2641 m2->dup_mirrors |= m1->dup_mirrors;
2648 mirror_set(struct ofproto *ofproto_, void *aux,
2649 const struct ofproto_mirror_settings *s)
2651 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2652 mirror_mask_t mirror_bit;
2653 struct ofbundle *bundle;
2654 struct ofmirror *mirror;
2655 struct ofbundle *out;
2656 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
2657 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
2660 mirror = mirror_lookup(ofproto, aux);
2662 mirror_destroy(mirror);
2668 idx = mirror_scan(ofproto);
2670 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2672 ofproto->up.name, MAX_MIRRORS, s->name);
2676 mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
2677 mirror->ofproto = ofproto;
2680 mirror->out_vlan = -1;
2681 mirror->name = NULL;
2684 if (!mirror->name || strcmp(s->name, mirror->name)) {
2686 mirror->name = xstrdup(s->name);
2689 /* Get the new configuration. */
2690 if (s->out_bundle) {
2691 out = bundle_lookup(ofproto, s->out_bundle);
2693 mirror_destroy(mirror);
2699 out_vlan = s->out_vlan;
2701 bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
2702 bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
2704 /* If the configuration has not changed, do nothing. */
2705 if (hmapx_equals(&srcs, &mirror->srcs)
2706 && hmapx_equals(&dsts, &mirror->dsts)
2707 && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
2708 && mirror->out == out
2709 && mirror->out_vlan == out_vlan)
2711 hmapx_destroy(&srcs);
2712 hmapx_destroy(&dsts);
2716 hmapx_swap(&srcs, &mirror->srcs);
2717 hmapx_destroy(&srcs);
2719 hmapx_swap(&dsts, &mirror->dsts);
2720 hmapx_destroy(&dsts);
2722 free(mirror->vlans);
2723 mirror->vlans = vlan_bitmap_clone(s->src_vlans);
2726 mirror->out_vlan = out_vlan;
2728 /* Update bundles. */
2729 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2730 HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
2731 if (hmapx_contains(&mirror->srcs, bundle)) {
2732 bundle->src_mirrors |= mirror_bit;
2734 bundle->src_mirrors &= ~mirror_bit;
2737 if (hmapx_contains(&mirror->dsts, bundle)) {
2738 bundle->dst_mirrors |= mirror_bit;
2740 bundle->dst_mirrors &= ~mirror_bit;
2743 if (mirror->out == bundle) {
2744 bundle->mirror_out |= mirror_bit;
2746 bundle->mirror_out &= ~mirror_bit;
2750 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2751 ofproto->has_mirrors = true;
2752 mac_learning_flush(ofproto->ml,
2753 &ofproto->backer->revalidate_set);
2754 mirror_update_dups(ofproto);
2760 mirror_destroy(struct ofmirror *mirror)
2762 struct ofproto_dpif *ofproto;
2763 mirror_mask_t mirror_bit;
2764 struct ofbundle *bundle;
2771 ofproto = mirror->ofproto;
2772 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2773 mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
2775 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2776 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2777 bundle->src_mirrors &= ~mirror_bit;
2778 bundle->dst_mirrors &= ~mirror_bit;
2779 bundle->mirror_out &= ~mirror_bit;
2782 hmapx_destroy(&mirror->srcs);
2783 hmapx_destroy(&mirror->dsts);
2784 free(mirror->vlans);
2786 ofproto->mirrors[mirror->idx] = NULL;
2790 mirror_update_dups(ofproto);
2792 ofproto->has_mirrors = false;
2793 for (i = 0; i < MAX_MIRRORS; i++) {
2794 if (ofproto->mirrors[i]) {
2795 ofproto->has_mirrors = true;
2802 mirror_get_stats(struct ofproto *ofproto_, void *aux,
2803 uint64_t *packets, uint64_t *bytes)
2805 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2806 struct ofmirror *mirror = mirror_lookup(ofproto, aux);
2809 *packets = *bytes = UINT64_MAX;
2813 *packets = mirror->packet_count;
2814 *bytes = mirror->byte_count;
2820 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2822 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2823 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2824 mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
2830 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2832 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2833 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2834 return bundle && bundle->mirror_out != 0;
2838 forward_bpdu_changed(struct ofproto *ofproto_)
2840 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2841 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2845 set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
2848 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2849 mac_learning_set_idle_time(ofproto->ml, idle_time);
2850 mac_learning_set_max_entries(ofproto->ml, max_entries);
2855 static struct ofport_dpif *
2856 get_ofp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port)
2858 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2859 return ofport ? ofport_dpif_cast(ofport) : NULL;
2862 static struct ofport_dpif *
2863 get_odp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
2865 struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
2866 return port && &ofproto->up == port->up.ofproto ? port : NULL;
2870 ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
2871 struct ofproto_port *ofproto_port,
2872 struct dpif_port *dpif_port)
2874 ofproto_port->name = dpif_port->name;
2875 ofproto_port->type = dpif_port->type;
2876 ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
2879 static struct ofport_dpif *
2880 ofport_get_peer(const struct ofport_dpif *ofport_dpif)
2882 const struct ofproto_dpif *ofproto;
2885 peer = netdev_vport_patch_peer(ofport_dpif->up.netdev);
2890 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2891 struct ofport *ofport;
2893 ofport = shash_find_data(&ofproto->up.port_by_name, peer);
2894 if (ofport && ofport->ofproto->ofproto_class == &ofproto_dpif_class) {
2895 return ofport_dpif_cast(ofport);
2902 port_run_fast(struct ofport_dpif *ofport)
2904 if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
2905 struct ofpbuf packet;
2907 ofpbuf_init(&packet, 0);
2908 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2909 send_packet(ofport, &packet);
2910 ofpbuf_uninit(&packet);
2915 port_run(struct ofport_dpif *ofport)
2917 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2918 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2919 bool enable = netdev_get_carrier(ofport->up.netdev);
2921 ofport->carrier_seq = carrier_seq;
2923 port_run_fast(ofport);
2925 if (ofport->tnl_port
2926 && tnl_port_reconfigure(&ofport->up, ofport->odp_port,
2927 &ofport->tnl_port)) {
2928 ofproto_dpif_cast(ofport->up.ofproto)->backer->need_revalidate = true;
2932 int cfm_opup = cfm_get_opup(ofport->cfm);
2934 cfm_run(ofport->cfm);
2935 enable = enable && !cfm_get_fault(ofport->cfm);
2937 if (cfm_opup >= 0) {
2938 enable = enable && cfm_opup;
2942 if (ofport->bundle) {
2943 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2944 if (carrier_changed) {
2945 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
2949 if (ofport->may_enable != enable) {
2950 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2952 if (ofproto->has_bundle_action) {
2953 ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
2957 ofport->may_enable = enable;
2961 port_wait(struct ofport_dpif *ofport)
2964 cfm_wait(ofport->cfm);
2969 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2970 struct ofproto_port *ofproto_port)
2972 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2973 struct dpif_port dpif_port;
2976 if (sset_contains(&ofproto->ghost_ports, devname)) {
2977 const char *type = netdev_get_type_from_name(devname);
2979 /* We may be called before ofproto->up.port_by_name is populated with
2980 * the appropriate ofport. For this reason, we must get the name and
2981 * type from the netdev layer directly. */
2983 const struct ofport *ofport;
2985 ofport = shash_find_data(&ofproto->up.port_by_name, devname);
2986 ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
2987 ofproto_port->name = xstrdup(devname);
2988 ofproto_port->type = xstrdup(type);
2994 if (!sset_contains(&ofproto->ports, devname)) {
2997 error = dpif_port_query_by_name(ofproto->backer->dpif,
2998 devname, &dpif_port);
3000 ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
3006 port_add(struct ofproto *ofproto_, struct netdev *netdev)
3008 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3009 const char *dp_port_name = netdev_vport_get_dpif_port(netdev);
3010 const char *devname = netdev_get_name(netdev);
3012 if (netdev_vport_is_patch(netdev)) {
3013 sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
3017 if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
3018 int error = dpif_port_add(ofproto->backer->dpif, netdev, NULL);
3024 if (netdev_get_tunnel_config(netdev)) {
3025 sset_add(&ofproto->ghost_ports, devname);
3026 sset_add(&ofproto->backer->tnl_backers, dp_port_name);
3028 sset_add(&ofproto->ports, devname);
3033 /* Returns true if the odp_port backing 'ofport' may be deleted from the
3034 * datapath. In most cases, this function simply returns true. However, for
3035 * tunnels it's possible that multiple ofports use the same odp_port, in which
3036 * case we need to keep the odp_port backer around until the last ofport is
3039 may_dpif_port_del(struct ofport_dpif *ofport)
3041 struct dpif_backer *backer = ofproto_dpif_cast(ofport->up.ofproto)->backer;
3042 struct ofproto_dpif *ofproto_iter;
3044 if (!ofport->tnl_port) {
3048 HMAP_FOR_EACH (ofproto_iter, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
3049 struct ofport_dpif *iter;
3051 if (backer != ofproto_iter->backer) {
3055 HMAP_FOR_EACH (iter, up.hmap_node, &ofproto_iter->up.ports) {
3056 if (ofport == iter) {
3060 if (!strcmp(netdev_vport_get_dpif_port(ofport->up.netdev),
3061 netdev_vport_get_dpif_port(iter->up.netdev))) {
3071 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
3073 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3074 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
3081 sset_find_and_delete(&ofproto->ghost_ports,
3082 netdev_get_name(ofport->up.netdev));
3083 if (may_dpif_port_del(ofport)) {
3084 error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
3086 const char *dpif_port;
3088 /* The caller is going to close ofport->up.netdev. If this is a
3089 * bonded port, then the bond is using that netdev, so remove it
3090 * from the bond. The client will need to reconfigure everything
3091 * after deleting ports, so then the slave will get re-added. */
3092 dpif_port = netdev_vport_get_dpif_port(ofport->up.netdev);
3093 sset_find_and_delete(&ofproto->backer->tnl_backers, dpif_port);
3094 bundle_remove(&ofport->up);
3101 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
3103 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3106 error = netdev_get_stats(ofport->up.netdev, stats);
3108 if (!error && ofport_->ofp_port == OFPP_LOCAL) {
3109 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3111 /* ofproto->stats.tx_packets represents packets that we created
3112 * internally and sent to some port (e.g. packets sent with
3113 * send_packet()). Account for them as if they had come from
3114 * OFPP_LOCAL and got forwarded. */
3116 if (stats->rx_packets != UINT64_MAX) {
3117 stats->rx_packets += ofproto->stats.tx_packets;
3120 if (stats->rx_bytes != UINT64_MAX) {
3121 stats->rx_bytes += ofproto->stats.tx_bytes;
3124 /* ofproto->stats.rx_packets represents packets that were received on
3125 * some port and we processed internally and dropped (e.g. STP).
3126 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3128 if (stats->tx_packets != UINT64_MAX) {
3129 stats->tx_packets += ofproto->stats.rx_packets;
3132 if (stats->tx_bytes != UINT64_MAX) {
3133 stats->tx_bytes += ofproto->stats.rx_bytes;
3140 /* Account packets for LOCAL port. */
3142 ofproto_update_local_port_stats(const struct ofproto *ofproto_,
3143 size_t tx_size, size_t rx_size)
3145 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3148 ofproto->stats.rx_packets++;
3149 ofproto->stats.rx_bytes += rx_size;
3152 ofproto->stats.tx_packets++;
3153 ofproto->stats.tx_bytes += tx_size;
3157 struct port_dump_state {
3162 struct ofproto_port port;
3167 port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
3169 *statep = xzalloc(sizeof(struct port_dump_state));
3174 port_dump_next(const struct ofproto *ofproto_, void *state_,
3175 struct ofproto_port *port)
3177 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3178 struct port_dump_state *state = state_;
3179 const struct sset *sset;
3180 struct sset_node *node;
3182 if (state->has_port) {
3183 ofproto_port_destroy(&state->port);
3184 state->has_port = false;
3186 sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
3187 while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
3190 error = port_query_by_name(ofproto_, node->name, &state->port);
3192 *port = state->port;
3193 state->has_port = true;
3195 } else if (error != ENODEV) {
3200 if (!state->ghost) {
3201 state->ghost = true;
3204 return port_dump_next(ofproto_, state_, port);
3211 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
3213 struct port_dump_state *state = state_;
3215 if (state->has_port) {
3216 ofproto_port_destroy(&state->port);
3223 port_poll(const struct ofproto *ofproto_, char **devnamep)
3225 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3227 if (ofproto->port_poll_errno) {
3228 int error = ofproto->port_poll_errno;
3229 ofproto->port_poll_errno = 0;
3233 if (sset_is_empty(&ofproto->port_poll_set)) {
3237 *devnamep = sset_pop(&ofproto->port_poll_set);
3242 port_poll_wait(const struct ofproto *ofproto_)
3244 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3245 dpif_port_poll_wait(ofproto->backer->dpif);
3249 port_is_lacp_current(const struct ofport *ofport_)
3251 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3252 return (ofport->bundle && ofport->bundle->lacp
3253 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
3257 /* Upcall handling. */
3259 /* Flow miss batching.
3261 * Some dpifs implement operations faster when you hand them off in a batch.
3262 * To allow batching, "struct flow_miss" queues the dpif-related work needed
3263 * for a given flow. Each "struct flow_miss" corresponds to sending one or
3264 * more packets, plus possibly installing the flow in the dpif.
3266 * So far we only batch the operations that affect flow setup time the most.
3267 * It's possible to batch more than that, but the benefit might be minimal. */
3269 struct hmap_node hmap_node;
3270 struct ofproto_dpif *ofproto;
3272 enum odp_key_fitness key_fitness;
3273 const struct nlattr *key;
3275 ovs_be16 initial_tci;
3276 struct list packets;
3277 enum dpif_upcall_type upcall_type;
3278 uint32_t odp_in_port;
3281 struct flow_miss_op {
3282 struct dpif_op dpif_op;
3283 struct subfacet *subfacet; /* Subfacet */
3284 void *garbage; /* Pointer to pass to free(), NULL if none. */
3285 uint64_t stub[1024 / 8]; /* Temporary buffer. */
3288 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
3289 * OpenFlow controller as necessary according to their individual
3290 * configurations. */
3292 send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
3293 const struct flow *flow)
3295 struct ofputil_packet_in pin;
3297 pin.packet = packet->data;
3298 pin.packet_len = packet->size;
3299 pin.reason = OFPR_NO_MATCH;
3300 pin.controller_id = 0;
3305 pin.send_len = 0; /* not used for flow table misses */
3307 flow_get_metadata(flow, &pin.fmd);
3309 connmgr_send_packet_in(ofproto->up.connmgr, &pin);
3312 static enum slow_path_reason
3313 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
3314 const struct ofport_dpif *ofport, const struct ofpbuf *packet)
3318 } else if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
3320 cfm_process_heartbeat(ofport->cfm, packet);
3323 } else if (ofport->bundle && ofport->bundle->lacp
3324 && flow->dl_type == htons(ETH_TYPE_LACP)) {
3326 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
3329 } else if (ofproto->stp && stp_should_process_flow(flow)) {
3331 stp_process_packet(ofport, packet);
3339 static struct flow_miss *
3340 flow_miss_find(struct hmap *todo, const struct flow *flow, uint32_t hash)
3342 struct flow_miss *miss;
3344 HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
3345 if (flow_equal(&miss->flow, flow)) {
3353 /* Partially Initializes 'op' as an "execute" operation for 'miss' and
3354 * 'packet'. The caller must initialize op->actions and op->actions_len. If
3355 * 'miss' is associated with a subfacet the caller must also initialize the
3356 * returned op->subfacet, and if anything needs to be freed after processing
3357 * the op, the caller must initialize op->garbage also. */
3359 init_flow_miss_execute_op(struct flow_miss *miss, struct ofpbuf *packet,
3360 struct flow_miss_op *op)
3362 if (miss->flow.vlan_tci != miss->initial_tci) {
3363 /* This packet was received on a VLAN splinter port. We
3364 * added a VLAN to the packet to make the packet resemble
3365 * the flow, but the actions were composed assuming that
3366 * the packet contained no VLAN. So, we must remove the
3367 * VLAN header from the packet before trying to execute the
3369 eth_pop_vlan(packet);
3372 op->subfacet = NULL;
3374 op->dpif_op.type = DPIF_OP_EXECUTE;
3375 op->dpif_op.u.execute.key = miss->key;
3376 op->dpif_op.u.execute.key_len = miss->key_len;
3377 op->dpif_op.u.execute.packet = packet;
3380 /* Helper for handle_flow_miss_without_facet() and
3381 * handle_flow_miss_with_facet(). */
3383 handle_flow_miss_common(struct rule_dpif *rule,
3384 struct ofpbuf *packet, const struct flow *flow)
3386 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3388 ofproto->n_matches++;
3390 if (rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
3392 * Extra-special case for fail-open mode.
3394 * We are in fail-open mode and the packet matched the fail-open
3395 * rule, but we are connected to a controller too. We should send
3396 * the packet up to the controller in the hope that it will try to
3397 * set up a flow and thereby allow us to exit fail-open.
3399 * See the top-level comment in fail-open.c for more information.
3401 send_packet_in_miss(ofproto, packet, flow);
3405 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3406 * 'miss', is likely to be worth tracking in detail in userspace and (usually)
3407 * installing a datapath flow. The answer is usually "yes" (a return value of
3408 * true). However, for short flows the cost of bookkeeping is much higher than
3409 * the benefits, so when the datapath holds a large number of flows we impose
3410 * some heuristics to decide which flows are likely to be worth tracking. */
3412 flow_miss_should_make_facet(struct ofproto_dpif *ofproto,
3413 struct flow_miss *miss, uint32_t hash)
3415 if (!ofproto->governor) {
3418 n_subfacets = hmap_count(&ofproto->subfacets);
3419 if (n_subfacets * 2 <= ofproto->up.flow_eviction_threshold) {
3423 ofproto->governor = governor_create(ofproto->up.name);
3426 return governor_should_install_flow(ofproto->governor, hash,
3427 list_size(&miss->packets));
3430 /* Handles 'miss', which matches 'rule', without creating a facet or subfacet
3431 * or creating any datapath flow. May add an "execute" operation to 'ops' and
3432 * increment '*n_ops'. */
3434 handle_flow_miss_without_facet(struct flow_miss *miss,
3435 struct rule_dpif *rule,
3436 struct flow_miss_op *ops, size_t *n_ops)
3438 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3439 long long int now = time_msec();
3440 struct action_xlate_ctx ctx;
3441 struct ofpbuf *packet;
3443 LIST_FOR_EACH (packet, list_node, &miss->packets) {
3444 struct flow_miss_op *op = &ops[*n_ops];
3445 struct dpif_flow_stats stats;
3446 struct ofpbuf odp_actions;
3448 COVERAGE_INC(facet_suppress);
3450 ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
3452 dpif_flow_stats_extract(&miss->flow, packet, now, &stats);
3453 rule_credit_stats(rule, &stats);
3455 action_xlate_ctx_init(&ctx, ofproto, &miss->flow, miss->initial_tci,
3457 ctx.resubmit_stats = &stats;
3458 xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
3461 if (odp_actions.size) {
3462 struct dpif_execute *execute = &op->dpif_op.u.execute;
3464 init_flow_miss_execute_op(miss, packet, op);
3465 execute->actions = odp_actions.data;
3466 execute->actions_len = odp_actions.size;
3467 op->garbage = ofpbuf_get_uninit_pointer(&odp_actions);
3471 ofpbuf_uninit(&odp_actions);
3476 /* Handles 'miss', which matches 'facet'. May add any required datapath
3477 * operations to 'ops', incrementing '*n_ops' for each new op.
3479 * All of the packets in 'miss' are considered to have arrived at time 'now'.
3480 * This is really important only for new facets: if we just called time_msec()
3481 * here, then the new subfacet or its packets could look (occasionally) as
3482 * though it was used some time after the facet was used. That can make a
3483 * one-packet flow look like it has a nonzero duration, which looks odd in
3484 * e.g. NetFlow statistics. */
3486 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
3488 struct flow_miss_op *ops, size_t *n_ops)
3490 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3491 enum subfacet_path want_path;
3492 struct subfacet *subfacet;
3493 struct ofpbuf *packet;
3495 subfacet = subfacet_create(facet, miss, now);
3497 LIST_FOR_EACH (packet, list_node, &miss->packets) {
3498 struct flow_miss_op *op = &ops[*n_ops];
3499 struct dpif_flow_stats stats;
3500 struct ofpbuf odp_actions;
3502 handle_flow_miss_common(facet->rule, packet, &miss->flow);
3504 ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
3505 if (!subfacet->actions || subfacet->slow) {
3506 subfacet_make_actions(subfacet, packet, &odp_actions);
3509 dpif_flow_stats_extract(&facet->flow, packet, now, &stats);
3510 subfacet_update_stats(subfacet, &stats);
3512 if (subfacet->actions_len) {
3513 struct dpif_execute *execute = &op->dpif_op.u.execute;
3515 init_flow_miss_execute_op(miss, packet, op);
3516 op->subfacet = subfacet;
3517 if (!subfacet->slow) {
3518 execute->actions = subfacet->actions;
3519 execute->actions_len = subfacet->actions_len;
3520 ofpbuf_uninit(&odp_actions);
3522 execute->actions = odp_actions.data;
3523 execute->actions_len = odp_actions.size;
3524 op->garbage = ofpbuf_get_uninit_pointer(&odp_actions);
3529 ofpbuf_uninit(&odp_actions);
3533 want_path = subfacet_want_path(subfacet->slow);
3534 if (miss->upcall_type == DPIF_UC_MISS || subfacet->path != want_path) {
3535 struct flow_miss_op *op = &ops[(*n_ops)++];
3536 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
3538 op->subfacet = subfacet;
3540 op->dpif_op.type = DPIF_OP_FLOW_PUT;
3541 put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
3542 put->key = miss->key;
3543 put->key_len = miss->key_len;
3544 if (want_path == SF_FAST_PATH) {
3545 put->actions = subfacet->actions;
3546 put->actions_len = subfacet->actions_len;
3548 compose_slow_path(ofproto, &facet->flow, subfacet->slow,
3549 op->stub, sizeof op->stub,
3550 &put->actions, &put->actions_len);
3556 /* Handles flow miss 'miss'. May add any required datapath operations
3557 * to 'ops', incrementing '*n_ops' for each new op. */
3559 handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
3562 struct ofproto_dpif *ofproto = miss->ofproto;
3563 struct facet *facet;
3567 /* The caller must ensure that miss->hmap_node.hash contains
3568 * flow_hash(miss->flow, 0). */
3569 hash = miss->hmap_node.hash;
3571 facet = facet_lookup_valid(ofproto, &miss->flow, hash);
3573 struct rule_dpif *rule = rule_dpif_lookup(ofproto, &miss->flow);
3575 if (!flow_miss_should_make_facet(ofproto, miss, hash)) {
3576 handle_flow_miss_without_facet(miss, rule, ops, n_ops);
3580 facet = facet_create(rule, &miss->flow, hash);
3585 handle_flow_miss_with_facet(miss, facet, now, ops, n_ops);
3588 static struct drop_key *
3589 drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
3592 struct drop_key *drop_key;
3594 HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
3595 &backer->drop_keys) {
3596 if (drop_key->key_len == key_len
3597 && !memcmp(drop_key->key, key, key_len)) {
3605 drop_key_clear(struct dpif_backer *backer)
3607 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3608 struct drop_key *drop_key, *next;
3610 HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
3613 error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
3615 if (error && !VLOG_DROP_WARN(&rl)) {
3616 struct ds ds = DS_EMPTY_INITIALIZER;
3617 odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
3618 VLOG_WARN("Failed to delete drop key (%s) (%s)", strerror(error),
3623 hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
3624 free(drop_key->key);
3629 /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
3630 * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
3631 * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as
3632 * returned by odp_flow_key_to_flow(). Also, optionally populates 'ofproto'
3633 * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that
3634 * 'packet' ingressed.
3636 * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
3637 * 'flow''s in_port to OFPP_NONE.
3639 * This function does post-processing on data returned from
3640 * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
3641 * of the upcall processing logic. In particular, if the extracted in_port is
3642 * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
3643 * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
3644 * a VLAN header onto 'packet' (if it is nonnull).
3646 * Optionally, if nonnull, sets '*initial_tci' to the VLAN TCI with which the
3647 * packet was really received, that is, the actual VLAN TCI extracted by
3648 * odp_flow_key_to_flow(). (This differs from the value returned in
3649 * flow->vlan_tci only for packets received on VLAN splinters.)
3651 * Similarly, this function also includes some logic to help with tunnels. It
3652 * may modify 'flow' as necessary to make the tunneling implementation
3653 * transparent to the upcall processing logic.
3655 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
3656 * or some other positive errno if there are other problems. */
3658 ofproto_receive(const struct dpif_backer *backer, struct ofpbuf *packet,
3659 const struct nlattr *key, size_t key_len,
3660 struct flow *flow, enum odp_key_fitness *fitnessp,
3661 struct ofproto_dpif **ofproto, uint32_t *odp_in_port,
3662 ovs_be16 *initial_tci)
3664 const struct ofport_dpif *port;
3665 enum odp_key_fitness fitness;
3668 fitness = odp_flow_key_to_flow(key, key_len, flow);
3669 if (fitness == ODP_FIT_ERROR) {
3675 *initial_tci = flow->vlan_tci;
3679 *odp_in_port = flow->in_port;
3682 if (tnl_port_should_receive(flow)) {
3683 const struct ofport *ofport = tnl_port_receive(flow);
3685 flow->in_port = OFPP_NONE;
3688 port = ofport_dpif_cast(ofport);
3690 /* We can't reproduce 'key' from 'flow'. */
3691 fitness = fitness == ODP_FIT_PERFECT ? ODP_FIT_TOO_MUCH : fitness;
3693 /* XXX: Since the tunnel module is not scoped per backer, it's
3694 * theoretically possible that we'll receive an ofport belonging to an
3695 * entirely different datapath. In practice, this can't happen because
3696 * no platforms has two separate datapaths which each support
3698 ovs_assert(ofproto_dpif_cast(port->up.ofproto)->backer == backer);
3700 port = odp_port_to_ofport(backer, flow->in_port);
3702 flow->in_port = OFPP_NONE;
3706 flow->in_port = port->up.ofp_port;
3707 if (vsp_adjust_flow(ofproto_dpif_cast(port->up.ofproto), flow)) {
3709 /* Make the packet resemble the flow, so that it gets sent to
3710 * an OpenFlow controller properly, so that it looks correct
3711 * for sFlow, and so that flow_extract() will get the correct
3712 * vlan_tci if it is called on 'packet'.
3714 * The allocated space inside 'packet' probably also contains
3715 * 'key', that is, both 'packet' and 'key' are probably part of
3716 * a struct dpif_upcall (see the large comment on that
3717 * structure definition), so pushing data on 'packet' is in
3718 * general not a good idea since it could overwrite 'key' or
3719 * free it as a side effect. However, it's OK in this special
3720 * case because we know that 'packet' is inside a Netlink
3721 * attribute: pushing 4 bytes will just overwrite the 4-byte
3722 * "struct nlattr", which is fine since we don't need that
3723 * header anymore. */
3724 eth_push_vlan(packet, flow->vlan_tci);
3726 /* We can't reproduce 'key' from 'flow'. */
3727 fitness = fitness == ODP_FIT_PERFECT ? ODP_FIT_TOO_MUCH : fitness;
3733 *ofproto = ofproto_dpif_cast(port->up.ofproto);
3738 *fitnessp = fitness;
3744 handle_miss_upcalls(struct dpif_backer *backer, struct dpif_upcall *upcalls,
3747 struct dpif_upcall *upcall;
3748 struct flow_miss *miss;
3749 struct flow_miss misses[FLOW_MISS_MAX_BATCH];
3750 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
3751 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
3761 /* Construct the to-do list.
3763 * This just amounts to extracting the flow from each packet and sticking
3764 * the packets that have the same flow in the same "flow_miss" structure so
3765 * that we can process them together. */
3768 for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
3769 struct flow_miss *miss = &misses[n_misses];
3770 struct flow_miss *existing_miss;
3771 struct ofproto_dpif *ofproto;
3772 uint32_t odp_in_port;
3777 error = ofproto_receive(backer, upcall->packet, upcall->key,
3778 upcall->key_len, &flow, &miss->key_fitness,
3779 &ofproto, &odp_in_port, &miss->initial_tci);
3780 if (error == ENODEV) {
3781 struct drop_key *drop_key;
3783 /* Received packet on port for which we couldn't associate
3784 * an ofproto. This can happen if a port is removed while
3785 * traffic is being received. Print a rate-limited message
3786 * in case it happens frequently. Install a drop flow so
3787 * that future packets of the flow are inexpensively dropped
3789 VLOG_INFO_RL(&rl, "received packet on unassociated port %"PRIu32,
3792 drop_key = drop_key_lookup(backer, upcall->key, upcall->key_len);
3794 drop_key = xmalloc(sizeof *drop_key);
3795 drop_key->key = xmemdup(upcall->key, upcall->key_len);
3796 drop_key->key_len = upcall->key_len;
3798 hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
3799 hash_bytes(drop_key->key, drop_key->key_len, 0));
3800 dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
3801 drop_key->key, drop_key->key_len, NULL, 0, NULL);
3808 flow_extract(upcall->packet, flow.skb_priority, flow.skb_mark,
3809 &flow.tunnel, flow.in_port, &miss->flow);
3811 /* Add other packets to a to-do list. */
3812 hash = flow_hash(&miss->flow, 0);
3813 existing_miss = flow_miss_find(&todo, &miss->flow, hash);
3814 if (!existing_miss) {
3815 hmap_insert(&todo, &miss->hmap_node, hash);
3816 miss->ofproto = ofproto;
3817 miss->key = upcall->key;
3818 miss->key_len = upcall->key_len;
3819 miss->upcall_type = upcall->type;
3820 miss->odp_in_port = odp_in_port;
3821 list_init(&miss->packets);
3825 miss = existing_miss;
3827 list_push_back(&miss->packets, &upcall->packet->list_node);
3830 /* Process each element in the to-do list, constructing the set of
3831 * operations to batch. */
3833 HMAP_FOR_EACH (miss, hmap_node, &todo) {
3834 handle_flow_miss(miss, flow_miss_ops, &n_ops);
3836 ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
3838 /* Execute batch. */
3839 for (i = 0; i < n_ops; i++) {
3840 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
3842 dpif_operate(backer->dpif, dpif_ops, n_ops);
3844 /* Free memory and update facets. */
3845 for (i = 0; i < n_ops; i++) {
3846 struct flow_miss_op *op = &flow_miss_ops[i];
3848 switch (op->dpif_op.type) {
3849 case DPIF_OP_EXECUTE:
3852 case DPIF_OP_FLOW_PUT:
3853 if (!op->dpif_op.error) {
3854 op->subfacet->path = subfacet_want_path(op->subfacet->slow);
3858 case DPIF_OP_FLOW_DEL:
3864 hmap_destroy(&todo);
3867 static enum { SFLOW_UPCALL, MISS_UPCALL, BAD_UPCALL }
3868 classify_upcall(const struct dpif_upcall *upcall)
3870 union user_action_cookie cookie;
3872 /* First look at the upcall type. */
3873 switch (upcall->type) {
3874 case DPIF_UC_ACTION:
3880 case DPIF_N_UC_TYPES:
3882 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
3886 /* "action" upcalls need a closer look. */
3887 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
3888 switch (cookie.type) {
3889 case USER_ACTION_COOKIE_SFLOW:
3890 return SFLOW_UPCALL;
3892 case USER_ACTION_COOKIE_SLOW_PATH:
3895 case USER_ACTION_COOKIE_UNSPEC:
3897 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
3903 handle_sflow_upcall(struct dpif_backer *backer,
3904 const struct dpif_upcall *upcall)
3906 struct ofproto_dpif *ofproto;
3907 union user_action_cookie cookie;
3909 uint32_t odp_in_port;
3911 if (ofproto_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3912 &flow, NULL, &ofproto, &odp_in_port, NULL)
3913 || !ofproto->sflow) {
3917 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
3918 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
3919 odp_in_port, &cookie);
3923 handle_upcalls(struct dpif_backer *backer, unsigned int max_batch)
3925 struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
3926 struct ofpbuf miss_bufs[FLOW_MISS_MAX_BATCH];
3927 uint64_t miss_buf_stubs[FLOW_MISS_MAX_BATCH][4096 / 8];
3932 ovs_assert(max_batch <= FLOW_MISS_MAX_BATCH);
3935 for (n_processed = 0; n_processed < max_batch; n_processed++) {
3936 struct dpif_upcall *upcall = &misses[n_misses];
3937 struct ofpbuf *buf = &miss_bufs[n_misses];
3940 ofpbuf_use_stub(buf, miss_buf_stubs[n_misses],
3941 sizeof miss_buf_stubs[n_misses]);
3942 error = dpif_recv(backer->dpif, upcall, buf);
3948 switch (classify_upcall(upcall)) {
3950 /* Handle it later. */
3955 handle_sflow_upcall(backer, upcall);
3965 /* Handle deferred MISS_UPCALL processing. */
3966 handle_miss_upcalls(backer, misses, n_misses);
3967 for (i = 0; i < n_misses; i++) {
3968 ofpbuf_uninit(&miss_bufs[i]);
3974 /* Flow expiration. */
3976 static int subfacet_max_idle(const struct ofproto_dpif *);
3977 static void update_stats(struct dpif_backer *);
3978 static void rule_expire(struct rule_dpif *);
3979 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
3981 /* This function is called periodically by run(). Its job is to collect
3982 * updates for the flows that have been installed into the datapath, most
3983 * importantly when they last were used, and then use that information to
3984 * expire flows that have not been used recently.
3986 * Returns the number of milliseconds after which it should be called again. */
3988 expire(struct dpif_backer *backer)
3990 struct ofproto_dpif *ofproto;
3991 int max_idle = INT32_MAX;
3993 /* Periodically clear out the drop keys in an effort to keep them
3994 * relatively few. */
3995 drop_key_clear(backer);
3997 /* Update stats for each flow in the backer. */
3998 update_stats(backer);
4000 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
4001 struct rule *rule, *next_rule;
4004 if (ofproto->backer != backer) {
4008 /* Expire subfacets that have been idle too long. */
4009 dp_max_idle = subfacet_max_idle(ofproto);
4010 expire_subfacets(ofproto, dp_max_idle);
4012 max_idle = MIN(max_idle, dp_max_idle);
4014 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
4016 LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
4017 &ofproto->up.expirable) {
4018 rule_expire(rule_dpif_cast(rule));
4021 /* All outstanding data in existing flows has been accounted, so it's a
4022 * good time to do bond rebalancing. */
4023 if (ofproto->has_bonded_bundles) {
4024 struct ofbundle *bundle;
4026 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
4028 bond_rebalance(bundle->bond, &backer->revalidate_set);
4034 return MIN(max_idle, 1000);
4037 /* Updates flow table statistics given that the datapath just reported 'stats'
4038 * as 'subfacet''s statistics. */
4040 update_subfacet_stats(struct subfacet *subfacet,
4041 const struct dpif_flow_stats *stats)
4043 struct facet *facet = subfacet->facet;
4045 if (stats->n_packets >= subfacet->dp_packet_count) {
4046 uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
4047 facet->packet_count += extra;
4049 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
4052 if (stats->n_bytes >= subfacet->dp_byte_count) {
4053 facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
4055 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
4058 subfacet->dp_packet_count = stats->n_packets;
4059 subfacet->dp_byte_count = stats->n_bytes;
4061 facet->tcp_flags |= stats->tcp_flags;
4063 subfacet_update_time(subfacet, stats->used);
4064 if (facet->accounted_bytes < facet->byte_count) {
4066 facet_account(facet);
4067 facet->accounted_bytes = facet->byte_count;
4069 facet_push_stats(facet);
4072 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
4073 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
4075 delete_unexpected_flow(struct ofproto_dpif *ofproto,
4076 const struct nlattr *key, size_t key_len)
4078 if (!VLOG_DROP_WARN(&rl)) {
4082 odp_flow_key_format(key, key_len, &s);
4083 VLOG_WARN("unexpected flow on %s: %s", ofproto->up.name, ds_cstr(&s));
4087 COVERAGE_INC(facet_unexpected);
4088 dpif_flow_del(ofproto->backer->dpif, key, key_len, NULL);
4091 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
4093 * This function also pushes statistics updates to rules which each facet
4094 * resubmits into. Generally these statistics will be accurate. However, if a
4095 * facet changes the rule it resubmits into at some time in between
4096 * update_stats() runs, it is possible that statistics accrued to the
4097 * old rule will be incorrectly attributed to the new rule. This could be
4098 * avoided by calling update_stats() whenever rules are created or
4099 * deleted. However, the performance impact of making so many calls to the
4100 * datapath do not justify the benefit of having perfectly accurate statistics.
4103 update_stats(struct dpif_backer *backer)
4105 const struct dpif_flow_stats *stats;
4106 struct dpif_flow_dump dump;
4107 const struct nlattr *key;
4110 dpif_flow_dump_start(&dump, backer->dpif);
4111 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
4113 struct subfacet *subfacet;
4114 struct ofproto_dpif *ofproto;
4115 struct ofport_dpif *ofport;
4118 if (ofproto_receive(backer, NULL, key, key_len, &flow, NULL, &ofproto,
4123 ofport = get_ofp_port(ofproto, flow.in_port);
4124 if (ofport && ofport->tnl_port) {
4125 netdev_vport_inc_rx(ofport->up.netdev, stats);
4128 key_hash = odp_flow_key_hash(key, key_len);
4129 subfacet = subfacet_find(ofproto, key, key_len, key_hash, &flow);
4130 switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
4132 update_subfacet_stats(subfacet, stats);
4136 /* Stats are updated per-packet. */
4139 case SF_NOT_INSTALLED:
4141 delete_unexpected_flow(ofproto, key, key_len);
4145 dpif_flow_dump_done(&dump);
4148 /* Calculates and returns the number of milliseconds of idle time after which
4149 * subfacets should expire from the datapath. When a subfacet expires, we fold
4150 * its statistics into its facet, and when a facet's last subfacet expires, we
4151 * fold its statistic into its rule. */
4153 subfacet_max_idle(const struct ofproto_dpif *ofproto)
4156 * Idle time histogram.
4158 * Most of the time a switch has a relatively small number of subfacets.
4159 * When this is the case we might as well keep statistics for all of them
4160 * in userspace and to cache them in the kernel datapath for performance as
4163 * As the number of subfacets increases, the memory required to maintain
4164 * statistics about them in userspace and in the kernel becomes
4165 * significant. However, with a large number of subfacets it is likely
4166 * that only a few of them are "heavy hitters" that consume a large amount
4167 * of bandwidth. At this point, only heavy hitters are worth caching in
4168 * the kernel and maintaining in userspaces; other subfacets we can
4171 * The technique used to compute the idle time is to build a histogram with
4172 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
4173 * that is installed in the kernel gets dropped in the appropriate bucket.
4174 * After the histogram has been built, we compute the cutoff so that only
4175 * the most-recently-used 1% of subfacets (but at least
4176 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
4177 * the most-recently-used bucket of subfacets is kept, so actually an
4178 * arbitrary number of subfacets can be kept in any given expiration run
4179 * (though the next run will delete most of those unless they receive
4182 * This requires a second pass through the subfacets, in addition to the
4183 * pass made by update_stats(), because the former function never looks at
4184 * uninstallable subfacets.
4186 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
4187 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
4188 int buckets[N_BUCKETS] = { 0 };
4189 int total, subtotal, bucket;
4190 struct subfacet *subfacet;
4194 total = hmap_count(&ofproto->subfacets);
4195 if (total <= ofproto->up.flow_eviction_threshold) {
4196 return N_BUCKETS * BUCKET_WIDTH;
4199 /* Build histogram. */
4201 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
4202 long long int idle = now - subfacet->used;
4203 int bucket = (idle <= 0 ? 0
4204 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
4205 : (unsigned int) idle / BUCKET_WIDTH);
4209 /* Find the first bucket whose flows should be expired. */
4210 subtotal = bucket = 0;
4212 subtotal += buckets[bucket++];
4213 } while (bucket < N_BUCKETS &&
4214 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
4216 if (VLOG_IS_DBG_ENABLED()) {
4220 ds_put_cstr(&s, "keep");
4221 for (i = 0; i < N_BUCKETS; i++) {
4223 ds_put_cstr(&s, ", drop");
4226 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
4229 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
4233 return bucket * BUCKET_WIDTH;
4237 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
4239 /* Cutoff time for most flows. */
4240 long long int normal_cutoff = time_msec() - dp_max_idle;
4242 /* We really want to keep flows for special protocols around, so use a more
4243 * conservative cutoff. */
4244 long long int special_cutoff = time_msec() - 10000;
4246 struct subfacet *subfacet, *next_subfacet;
4247 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
4251 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
4252 &ofproto->subfacets) {
4253 long long int cutoff;
4255 cutoff = (subfacet->slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)
4258 if (subfacet->used < cutoff) {
4259 if (subfacet->path != SF_NOT_INSTALLED) {
4260 batch[n_batch++] = subfacet;
4261 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
4262 subfacet_destroy_batch(ofproto, batch, n_batch);
4266 subfacet_destroy(subfacet);
4272 subfacet_destroy_batch(ofproto, batch, n_batch);
4276 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4277 * then delete it entirely. */
4279 rule_expire(struct rule_dpif *rule)
4281 struct facet *facet, *next_facet;
4285 if (rule->up.pending) {
4286 /* We'll have to expire it later. */
4290 /* Has 'rule' expired? */
4292 if (rule->up.hard_timeout
4293 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
4294 reason = OFPRR_HARD_TIMEOUT;
4295 } else if (rule->up.idle_timeout
4296 && now > rule->up.used + rule->up.idle_timeout * 1000) {
4297 reason = OFPRR_IDLE_TIMEOUT;
4302 COVERAGE_INC(ofproto_dpif_expired);
4304 /* Update stats. (This is a no-op if the rule expired due to an idle
4305 * timeout, because that only happens when the rule has no facets left.) */
4306 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
4307 facet_remove(facet);
4310 /* Get rid of the rule. */
4311 ofproto_rule_expire(&rule->up, reason);
4316 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
4318 * The caller must already have determined that no facet with an identical
4319 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
4320 * the ofproto's classifier table.
4322 * 'hash' must be the return value of flow_hash(flow, 0).
4324 * The facet will initially have no subfacets. The caller should create (at
4325 * least) one subfacet with subfacet_create(). */
4326 static struct facet *
4327 facet_create(struct rule_dpif *rule, const struct flow *flow, uint32_t hash)
4329 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4330 struct facet *facet;
4332 facet = xzalloc(sizeof *facet);
4333 facet->used = time_msec();
4334 hmap_insert(&ofproto->facets, &facet->hmap_node, hash);
4335 list_push_back(&rule->facets, &facet->list_node);
4337 facet->flow = *flow;
4338 list_init(&facet->subfacets);
4339 netflow_flow_init(&facet->nf_flow);
4340 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
4346 facet_free(struct facet *facet)
4351 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4352 * 'packet', which arrived on 'in_port'. */
4354 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
4355 const struct nlattr *odp_actions, size_t actions_len,
4356 struct ofpbuf *packet)
4358 struct odputil_keybuf keybuf;
4362 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4363 odp_flow_key_from_flow(&key, flow,
4364 ofp_port_to_odp_port(ofproto, flow->in_port));
4366 error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
4367 odp_actions, actions_len, packet);
4371 /* Remove 'facet' from 'ofproto' and free up the associated memory:
4373 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4374 * rule's statistics, via subfacet_uninstall().
4376 * - Removes 'facet' from its rule and from ofproto->facets.
4379 facet_remove(struct facet *facet)
4381 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4382 struct subfacet *subfacet, *next_subfacet;
4384 ovs_assert(!list_is_empty(&facet->subfacets));
4386 /* First uninstall all of the subfacets to get final statistics. */
4387 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4388 subfacet_uninstall(subfacet);
4391 /* Flush the final stats to the rule.
4393 * This might require us to have at least one subfacet around so that we
4394 * can use its actions for accounting in facet_account(), which is why we
4395 * have uninstalled but not yet destroyed the subfacets. */
4396 facet_flush_stats(facet);
4398 /* Now we're really all done so destroy everything. */
4399 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
4400 &facet->subfacets) {
4401 subfacet_destroy__(subfacet);
4403 hmap_remove(&ofproto->facets, &facet->hmap_node);
4404 list_remove(&facet->list_node);
4408 /* Feed information from 'facet' back into the learning table to keep it in
4409 * sync with what is actually flowing through the datapath. */
4411 facet_learn(struct facet *facet)
4413 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4414 struct action_xlate_ctx ctx;
4416 if (!facet->has_learn
4417 && !facet->has_normal
4418 && (!facet->has_fin_timeout
4419 || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
4423 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
4424 facet->flow.vlan_tci,
4425 facet->rule, facet->tcp_flags, NULL);
4426 ctx.may_learn = true;
4427 xlate_actions_for_side_effects(&ctx, facet->rule->up.ofpacts,
4428 facet->rule->up.ofpacts_len);
4432 facet_account(struct facet *facet)
4434 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4435 struct subfacet *subfacet;
4436 const struct nlattr *a;
4441 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
4444 n_bytes = facet->byte_count - facet->accounted_bytes;
4446 /* This loop feeds byte counters to bond_account() for rebalancing to use
4447 * as a basis. We also need to track the actual VLAN on which the packet
4448 * is going to be sent to ensure that it matches the one passed to
4449 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4452 * We use the actions from an arbitrary subfacet because they should all
4453 * be equally valid for our purpose. */
4454 subfacet = CONTAINER_OF(list_front(&facet->subfacets),
4455 struct subfacet, list_node);
4456 vlan_tci = facet->flow.vlan_tci;
4457 NL_ATTR_FOR_EACH_UNSAFE (a, left,
4458 subfacet->actions, subfacet->actions_len) {
4459 const struct ovs_action_push_vlan *vlan;
4460 struct ofport_dpif *port;
4462 switch (nl_attr_type(a)) {
4463 case OVS_ACTION_ATTR_OUTPUT:
4464 port = get_odp_port(ofproto, nl_attr_get_u32(a));
4465 if (port && port->bundle && port->bundle->bond) {
4466 bond_account(port->bundle->bond, &facet->flow,
4467 vlan_tci_to_vid(vlan_tci), n_bytes);
4471 case OVS_ACTION_ATTR_POP_VLAN:
4472 vlan_tci = htons(0);
4475 case OVS_ACTION_ATTR_PUSH_VLAN:
4476 vlan = nl_attr_get(a);
4477 vlan_tci = vlan->vlan_tci;
4483 /* Returns true if the only action for 'facet' is to send to the controller.
4484 * (We don't report NetFlow expiration messages for such facets because they
4485 * are just part of the control logic for the network, not real traffic). */
4487 facet_is_controller_flow(struct facet *facet)
4490 const struct rule *rule = &facet->rule->up;
4491 const struct ofpact *ofpacts = rule->ofpacts;
4492 size_t ofpacts_len = rule->ofpacts_len;
4494 if (ofpacts_len > 0 &&
4495 ofpacts->type == OFPACT_CONTROLLER &&
4496 ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len)) {
4503 /* Folds all of 'facet''s statistics into its rule. Also updates the
4504 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4505 * 'facet''s statistics in the datapath should have been zeroed and folded into
4506 * its packet and byte counts before this function is called. */
4508 facet_flush_stats(struct facet *facet)
4510 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4511 struct subfacet *subfacet;
4513 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4514 ovs_assert(!subfacet->dp_byte_count);
4515 ovs_assert(!subfacet->dp_packet_count);
4518 facet_push_stats(facet);
4519 if (facet->accounted_bytes < facet->byte_count) {
4520 facet_account(facet);
4521 facet->accounted_bytes = facet->byte_count;
4524 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
4525 struct ofexpired expired;
4526 expired.flow = facet->flow;
4527 expired.packet_count = facet->packet_count;
4528 expired.byte_count = facet->byte_count;
4529 expired.used = facet->used;
4530 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
4533 facet->rule->packet_count += facet->packet_count;
4534 facet->rule->byte_count += facet->byte_count;
4536 /* Reset counters to prevent double counting if 'facet' ever gets
4538 facet_reset_counters(facet);
4540 netflow_flow_clear(&facet->nf_flow);
4541 facet->tcp_flags = 0;
4544 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4545 * Returns it if found, otherwise a null pointer.
4547 * 'hash' must be the return value of flow_hash(flow, 0).
4549 * The returned facet might need revalidation; use facet_lookup_valid()
4550 * instead if that is important. */
4551 static struct facet *
4552 facet_find(struct ofproto_dpif *ofproto,
4553 const struct flow *flow, uint32_t hash)
4555 struct facet *facet;
4557 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, hash, &ofproto->facets) {
4558 if (flow_equal(flow, &facet->flow)) {
4566 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4567 * Returns it if found, otherwise a null pointer.
4569 * 'hash' must be the return value of flow_hash(flow, 0).
4571 * The returned facet is guaranteed to be valid. */
4572 static struct facet *
4573 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow,
4576 struct facet *facet;
4578 facet = facet_find(ofproto, flow, hash);
4580 && (ofproto->backer->need_revalidate
4581 || tag_set_intersects(&ofproto->backer->revalidate_set,
4583 facet_revalidate(facet);
4590 subfacet_path_to_string(enum subfacet_path path)
4593 case SF_NOT_INSTALLED:
4594 return "not installed";
4596 return "in fast path";
4598 return "in slow path";
4604 /* Returns the path in which a subfacet should be installed if its 'slow'
4605 * member has the specified value. */
4606 static enum subfacet_path
4607 subfacet_want_path(enum slow_path_reason slow)
4609 return slow ? SF_SLOW_PATH : SF_FAST_PATH;
4612 /* Returns true if 'subfacet' needs to have its datapath flow updated,
4613 * supposing that its actions have been recalculated as 'want_actions' and that
4614 * 'slow' is nonzero iff 'subfacet' should be in the slow path. */
4616 subfacet_should_install(struct subfacet *subfacet, enum slow_path_reason slow,
4617 const struct ofpbuf *want_actions)
4619 enum subfacet_path want_path = subfacet_want_path(slow);
4620 return (want_path != subfacet->path
4621 || (want_path == SF_FAST_PATH
4622 && (subfacet->actions_len != want_actions->size
4623 || memcmp(subfacet->actions, want_actions->data,
4624 subfacet->actions_len))));
4628 facet_check_consistency(struct facet *facet)
4630 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
4632 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4634 uint64_t odp_actions_stub[1024 / 8];
4635 struct ofpbuf odp_actions;
4637 struct rule_dpif *rule;
4638 struct subfacet *subfacet;
4639 bool may_log = false;
4642 /* Check the rule for consistency. */
4643 rule = rule_dpif_lookup(ofproto, &facet->flow);
4644 ok = rule == facet->rule;
4646 may_log = !VLOG_DROP_WARN(&rl);
4651 flow_format(&s, &facet->flow);
4652 ds_put_format(&s, ": facet associated with wrong rule (was "
4653 "table=%"PRIu8",", facet->rule->up.table_id);
4654 cls_rule_format(&facet->rule->up.cr, &s);
4655 ds_put_format(&s, ") (should have been table=%"PRIu8",",
4657 cls_rule_format(&rule->up.cr, &s);
4658 ds_put_char(&s, ')');
4660 VLOG_WARN("%s", ds_cstr(&s));
4665 /* Check the datapath actions for consistency. */
4666 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
4667 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4668 enum subfacet_path want_path;
4669 struct odputil_keybuf keybuf;
4670 struct action_xlate_ctx ctx;
4674 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
4675 subfacet->initial_tci, rule, 0, NULL);
4676 xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len,
4679 if (subfacet->path == SF_NOT_INSTALLED) {
4680 /* This only happens if the datapath reported an error when we
4681 * tried to install the flow. Don't flag another error here. */
4685 want_path = subfacet_want_path(subfacet->slow);
4686 if (want_path == SF_SLOW_PATH && subfacet->path == SF_SLOW_PATH) {
4687 /* The actions for slow-path flows may legitimately vary from one
4688 * packet to the next. We're done. */
4692 if (!subfacet_should_install(subfacet, subfacet->slow, &odp_actions)) {
4696 /* Inconsistency! */
4698 may_log = !VLOG_DROP_WARN(&rl);
4702 /* Rate-limited, skip reporting. */
4707 subfacet_get_key(subfacet, &keybuf, &key);
4708 odp_flow_key_format(key.data, key.size, &s);
4710 ds_put_cstr(&s, ": inconsistency in subfacet");
4711 if (want_path != subfacet->path) {
4712 enum odp_key_fitness fitness = subfacet->key_fitness;
4714 ds_put_format(&s, " (%s, fitness=%s)",
4715 subfacet_path_to_string(subfacet->path),
4716 odp_key_fitness_to_string(fitness));
4717 ds_put_format(&s, " (should have been %s)",
4718 subfacet_path_to_string(want_path));
4719 } else if (want_path == SF_FAST_PATH) {
4720 ds_put_cstr(&s, " (actions were: ");
4721 format_odp_actions(&s, subfacet->actions,
4722 subfacet->actions_len);
4723 ds_put_cstr(&s, ") (correct actions: ");
4724 format_odp_actions(&s, odp_actions.data, odp_actions.size);
4725 ds_put_char(&s, ')');
4727 ds_put_cstr(&s, " (actions: ");
4728 format_odp_actions(&s, subfacet->actions,
4729 subfacet->actions_len);
4730 ds_put_char(&s, ')');
4732 VLOG_WARN("%s", ds_cstr(&s));
4735 ofpbuf_uninit(&odp_actions);
4740 /* Re-searches the classifier for 'facet':
4742 * - If the rule found is different from 'facet''s current rule, moves
4743 * 'facet' to the new rule and recompiles its actions.
4745 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4746 * where it is and recompiles its actions anyway. */
4748 facet_revalidate(struct facet *facet)
4750 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4752 struct nlattr *odp_actions;
4755 struct actions *new_actions;
4757 struct action_xlate_ctx ctx;
4758 uint64_t odp_actions_stub[1024 / 8];
4759 struct ofpbuf odp_actions;
4761 struct rule_dpif *new_rule;
4762 struct subfacet *subfacet;
4765 COVERAGE_INC(facet_revalidate);
4767 new_rule = rule_dpif_lookup(ofproto, &facet->flow);
4769 /* Calculate new datapath actions.
4771 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4772 * emit a NetFlow expiration and, if so, we need to have the old state
4773 * around to properly compose it. */
4775 /* If the datapath actions changed or the installability changed,
4776 * then we need to talk to the datapath. */
4779 memset(&ctx, 0, sizeof ctx);
4780 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
4781 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4782 enum slow_path_reason slow;
4784 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
4785 subfacet->initial_tci, new_rule, 0, NULL);
4786 xlate_actions(&ctx, new_rule->up.ofpacts, new_rule->up.ofpacts_len,
4789 slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
4790 if (subfacet_should_install(subfacet, slow, &odp_actions)) {
4791 struct dpif_flow_stats stats;
4793 subfacet_install(subfacet,
4794 odp_actions.data, odp_actions.size, &stats, slow);
4795 subfacet_update_stats(subfacet, &stats);
4798 new_actions = xcalloc(list_size(&facet->subfacets),
4799 sizeof *new_actions);
4801 new_actions[i].odp_actions = xmemdup(odp_actions.data,
4803 new_actions[i].actions_len = odp_actions.size;
4808 ofpbuf_uninit(&odp_actions);
4811 facet_flush_stats(facet);
4814 /* Update 'facet' now that we've taken care of all the old state. */
4815 facet->tags = ctx.tags;
4816 facet->nf_flow.output_iface = ctx.nf_output_iface;
4817 facet->has_learn = ctx.has_learn;
4818 facet->has_normal = ctx.has_normal;
4819 facet->has_fin_timeout = ctx.has_fin_timeout;
4820 facet->mirrors = ctx.mirrors;
4823 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4824 subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
4826 if (new_actions && new_actions[i].odp_actions) {
4827 free(subfacet->actions);
4828 subfacet->actions = new_actions[i].odp_actions;
4829 subfacet->actions_len = new_actions[i].actions_len;
4835 if (facet->rule != new_rule) {
4836 COVERAGE_INC(facet_changed_rule);
4837 list_remove(&facet->list_node);
4838 list_push_back(&new_rule->facets, &facet->list_node);
4839 facet->rule = new_rule;
4840 facet->used = new_rule->up.created;
4841 facet->prev_used = facet->used;
4845 /* Updates 'facet''s used time. Caller is responsible for calling
4846 * facet_push_stats() to update the flows which 'facet' resubmits into. */
4848 facet_update_time(struct facet *facet, long long int used)
4850 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4851 if (used > facet->used) {
4853 ofproto_rule_update_used(&facet->rule->up, used);
4854 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
4859 facet_reset_counters(struct facet *facet)
4861 facet->packet_count = 0;
4862 facet->byte_count = 0;
4863 facet->prev_packet_count = 0;
4864 facet->prev_byte_count = 0;
4865 facet->accounted_bytes = 0;
4869 facet_push_stats(struct facet *facet)
4871 struct dpif_flow_stats stats;
4873 ovs_assert(facet->packet_count >= facet->prev_packet_count);
4874 ovs_assert(facet->byte_count >= facet->prev_byte_count);
4875 ovs_assert(facet->used >= facet->prev_used);
4877 stats.n_packets = facet->packet_count - facet->prev_packet_count;
4878 stats.n_bytes = facet->byte_count - facet->prev_byte_count;
4879 stats.used = facet->used;
4880 stats.tcp_flags = 0;
4882 if (stats.n_packets || stats.n_bytes || facet->used > facet->prev_used) {
4883 facet->prev_packet_count = facet->packet_count;
4884 facet->prev_byte_count = facet->byte_count;
4885 facet->prev_used = facet->used;
4887 flow_push_stats(facet->rule, &facet->flow, &stats);
4889 update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
4890 facet->mirrors, stats.n_packets, stats.n_bytes);
4895 rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
4897 rule->packet_count += stats->n_packets;
4898 rule->byte_count += stats->n_bytes;
4899 ofproto_rule_update_used(&rule->up, stats->used);
4902 /* Pushes flow statistics to the rules which 'flow' resubmits into given
4903 * 'rule''s actions and mirrors. */
4905 flow_push_stats(struct rule_dpif *rule,
4906 const struct flow *flow, const struct dpif_flow_stats *stats)
4908 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4909 struct action_xlate_ctx ctx;
4911 ofproto_rule_update_used(&rule->up, stats->used);
4913 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, rule,
4915 ctx.resubmit_stats = stats;
4916 xlate_actions_for_side_effects(&ctx, rule->up.ofpacts,
4917 rule->up.ofpacts_len);
4922 static struct subfacet *
4923 subfacet_find(struct ofproto_dpif *ofproto,
4924 const struct nlattr *key, size_t key_len, uint32_t key_hash,
4925 const struct flow *flow)
4927 struct subfacet *subfacet;
4929 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
4930 &ofproto->subfacets) {
4932 ? (subfacet->key_len == key_len
4933 && !memcmp(key, subfacet->key, key_len))
4934 : flow_equal(flow, &subfacet->facet->flow)) {
4942 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4943 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
4944 * existing subfacet if there is one, otherwise creates and returns a
4947 * If the returned subfacet is new, then subfacet->actions will be NULL, in
4948 * which case the caller must populate the actions with
4949 * subfacet_make_actions(). */
4950 static struct subfacet *
4951 subfacet_create(struct facet *facet, struct flow_miss *miss,
4954 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
4955 enum odp_key_fitness key_fitness = miss->key_fitness;
4956 const struct nlattr *key = miss->key;
4957 size_t key_len = miss->key_len;
4959 struct subfacet *subfacet;
4961 key_hash = odp_flow_key_hash(key, key_len);
4963 if (list_is_empty(&facet->subfacets)) {
4964 subfacet = &facet->one_subfacet;
4966 subfacet = subfacet_find(ofproto, key, key_len, key_hash,
4969 if (subfacet->facet == facet) {
4973 /* This shouldn't happen. */
4974 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
4975 subfacet_destroy(subfacet);
4978 subfacet = xmalloc(sizeof *subfacet);
4981 hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
4982 list_push_back(&facet->subfacets, &subfacet->list_node);
4983 subfacet->facet = facet;
4984 subfacet->key_fitness = key_fitness;
4985 if (key_fitness != ODP_FIT_PERFECT) {
4986 subfacet->key = xmemdup(key, key_len);
4987 subfacet->key_len = key_len;
4989 subfacet->key = NULL;
4990 subfacet->key_len = 0;
4992 subfacet->used = now;
4993 subfacet->dp_packet_count = 0;
4994 subfacet->dp_byte_count = 0;
4995 subfacet->actions_len = 0;
4996 subfacet->actions = NULL;
4997 subfacet->slow = (subfacet->key_fitness == ODP_FIT_TOO_LITTLE
5000 subfacet->path = SF_NOT_INSTALLED;
5001 subfacet->initial_tci = miss->initial_tci;
5002 subfacet->odp_in_port = miss->odp_in_port;
5007 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
5008 * its facet within 'ofproto', and frees it. */
5010 subfacet_destroy__(struct subfacet *subfacet)
5012 struct facet *facet = subfacet->facet;
5013 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
5015 subfacet_uninstall(subfacet);
5016 hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
5017 list_remove(&subfacet->list_node);
5018 free(subfacet->key);
5019 free(subfacet->actions);
5020 if (subfacet != &facet->one_subfacet) {
5025 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
5026 * last remaining subfacet in its facet destroys the facet too. */
5028 subfacet_destroy(struct subfacet *subfacet)
5030 struct facet *facet = subfacet->facet;
5032 if (list_is_singleton(&facet->subfacets)) {
5033 /* facet_remove() needs at least one subfacet (it will remove it). */
5034 facet_remove(facet);
5036 subfacet_destroy__(subfacet);
5041 subfacet_destroy_batch(struct ofproto_dpif *ofproto,
5042 struct subfacet **subfacets, int n)
5044 struct odputil_keybuf keybufs[SUBFACET_DESTROY_MAX_BATCH];
5045 struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
5046 struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
5047 struct ofpbuf keys[SUBFACET_DESTROY_MAX_BATCH];
5048 struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
5051 for (i = 0; i < n; i++) {
5052 ops[i].type = DPIF_OP_FLOW_DEL;
5053 subfacet_get_key(subfacets[i], &keybufs[i], &keys[i]);
5054 ops[i].u.flow_del.key = keys[i].data;
5055 ops[i].u.flow_del.key_len = keys[i].size;
5056 ops[i].u.flow_del.stats = &stats[i];
5060 dpif_operate(ofproto->backer->dpif, opsp, n);
5061 for (i = 0; i < n; i++) {
5062 subfacet_reset_dp_stats(subfacets[i], &stats[i]);
5063 subfacets[i]->path = SF_NOT_INSTALLED;
5064 subfacet_destroy(subfacets[i]);
5068 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
5069 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
5070 * for use as temporary storage. */
5072 subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
5076 if (!subfacet->key) {
5077 struct flow *flow = &subfacet->facet->flow;
5079 ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
5080 odp_flow_key_from_flow(key, flow, subfacet->odp_in_port);
5082 ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
5086 /* Composes the datapath actions for 'subfacet' based on its rule's actions.
5087 * Translates the actions into 'odp_actions', which the caller must have
5088 * initialized and is responsible for uninitializing. */
5090 subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet,
5091 struct ofpbuf *odp_actions)
5093 struct facet *facet = subfacet->facet;
5094 struct rule_dpif *rule = facet->rule;
5095 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5097 struct action_xlate_ctx ctx;
5099 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
5101 xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, odp_actions);
5102 facet->tags = ctx.tags;
5103 facet->has_learn = ctx.has_learn;
5104 facet->has_normal = ctx.has_normal;
5105 facet->has_fin_timeout = ctx.has_fin_timeout;
5106 facet->nf_flow.output_iface = ctx.nf_output_iface;
5107 facet->mirrors = ctx.mirrors;
5109 subfacet->slow = (subfacet->slow & SLOW_MATCH) | ctx.slow;
5110 if (subfacet->actions_len != odp_actions->size
5111 || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
5112 free(subfacet->actions);
5113 subfacet->actions_len = odp_actions->size;
5114 subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
5118 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
5119 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
5120 * in the datapath will be zeroed and 'stats' will be updated with traffic new
5121 * since 'subfacet' was last updated.
5123 * Returns 0 if successful, otherwise a positive errno value. */
5125 subfacet_install(struct subfacet *subfacet,
5126 const struct nlattr *actions, size_t actions_len,
5127 struct dpif_flow_stats *stats,
5128 enum slow_path_reason slow)
5130 struct facet *facet = subfacet->facet;
5131 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
5132 enum subfacet_path path = subfacet_want_path(slow);
5133 uint64_t slow_path_stub[128 / 8];
5134 struct odputil_keybuf keybuf;
5135 enum dpif_flow_put_flags flags;
5139 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
5141 flags |= DPIF_FP_ZERO_STATS;
5144 if (path == SF_SLOW_PATH) {
5145 compose_slow_path(ofproto, &facet->flow, slow,
5146 slow_path_stub, sizeof slow_path_stub,
5147 &actions, &actions_len);
5150 subfacet_get_key(subfacet, &keybuf, &key);
5151 ret = dpif_flow_put(ofproto->backer->dpif, flags, key.data, key.size,
5152 actions, actions_len, stats);
5155 subfacet_reset_dp_stats(subfacet, stats);
5159 subfacet->path = path;
5165 subfacet_reinstall(struct subfacet *subfacet, struct dpif_flow_stats *stats)
5167 return subfacet_install(subfacet, subfacet->actions, subfacet->actions_len,
5168 stats, subfacet->slow);
5171 /* If 'subfacet' is installed in the datapath, uninstalls it. */
5173 subfacet_uninstall(struct subfacet *subfacet)
5175 if (subfacet->path != SF_NOT_INSTALLED) {
5176 struct rule_dpif *rule = subfacet->facet->rule;
5177 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5178 struct odputil_keybuf keybuf;
5179 struct dpif_flow_stats stats;
5183 subfacet_get_key(subfacet, &keybuf, &key);
5184 error = dpif_flow_del(ofproto->backer->dpif,
5185 key.data, key.size, &stats);
5186 subfacet_reset_dp_stats(subfacet, &stats);
5188 subfacet_update_stats(subfacet, &stats);
5190 subfacet->path = SF_NOT_INSTALLED;
5192 ovs_assert(subfacet->dp_packet_count == 0);
5193 ovs_assert(subfacet->dp_byte_count == 0);
5197 /* Resets 'subfacet''s datapath statistics counters. This should be called
5198 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
5199 * non-null, it should contain the statistics returned by dpif when 'subfacet'
5200 * was reset in the datapath. 'stats' will be modified to include only
5201 * statistics new since 'subfacet' was last updated. */
5203 subfacet_reset_dp_stats(struct subfacet *subfacet,
5204 struct dpif_flow_stats *stats)
5207 && subfacet->dp_packet_count <= stats->n_packets
5208 && subfacet->dp_byte_count <= stats->n_bytes) {
5209 stats->n_packets -= subfacet->dp_packet_count;
5210 stats->n_bytes -= subfacet->dp_byte_count;
5213 subfacet->dp_packet_count = 0;
5214 subfacet->dp_byte_count = 0;
5217 /* Updates 'subfacet''s used time. The caller is responsible for calling
5218 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
5220 subfacet_update_time(struct subfacet *subfacet, long long int used)
5222 if (used > subfacet->used) {
5223 subfacet->used = used;
5224 facet_update_time(subfacet->facet, used);
5228 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
5230 * Because of the meaning of a subfacet's counters, it only makes sense to do
5231 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
5232 * represents a packet that was sent by hand or if it represents statistics
5233 * that have been cleared out of the datapath. */
5235 subfacet_update_stats(struct subfacet *subfacet,
5236 const struct dpif_flow_stats *stats)
5238 if (stats->n_packets || stats->used > subfacet->used) {
5239 struct facet *facet = subfacet->facet;
5241 subfacet_update_time(subfacet, stats->used);
5242 facet->packet_count += stats->n_packets;
5243 facet->byte_count += stats->n_bytes;
5244 facet->tcp_flags |= stats->tcp_flags;
5245 facet_push_stats(facet);
5246 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
5252 static struct rule_dpif *
5253 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow)
5255 struct rule_dpif *rule;
5257 rule = rule_dpif_lookup__(ofproto, flow, 0);
5262 return rule_dpif_miss_rule(ofproto, flow);
5265 static struct rule_dpif *
5266 rule_dpif_lookup__(struct ofproto_dpif *ofproto, const struct flow *flow,
5269 struct cls_rule *cls_rule;
5270 struct classifier *cls;
5272 if (table_id >= N_TABLES) {
5276 cls = &ofproto->up.tables[table_id].cls;
5277 if (flow->nw_frag & FLOW_NW_FRAG_ANY
5278 && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
5279 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
5280 * are unavailable. */
5281 struct flow ofpc_normal_flow = *flow;
5282 ofpc_normal_flow.tp_src = htons(0);
5283 ofpc_normal_flow.tp_dst = htons(0);
5284 cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
5286 cls_rule = classifier_lookup(cls, flow);
5288 return rule_dpif_cast(rule_from_cls_rule(cls_rule));
5291 static struct rule_dpif *
5292 rule_dpif_miss_rule(struct ofproto_dpif *ofproto, const struct flow *flow)
5294 struct ofport_dpif *port;
5296 port = get_ofp_port(ofproto, flow->in_port);
5298 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, flow->in_port);
5299 return ofproto->miss_rule;
5302 if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
5303 return ofproto->no_packet_in_rule;
5305 return ofproto->miss_rule;
5309 complete_operation(struct rule_dpif *rule)
5311 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5313 rule_invalidate(rule);
5315 struct dpif_completion *c = xmalloc(sizeof *c);
5316 c->op = rule->up.pending;
5317 list_push_back(&ofproto->completions, &c->list_node);
5319 ofoperation_complete(rule->up.pending, 0);
5323 static struct rule *
5326 struct rule_dpif *rule = xmalloc(sizeof *rule);
5331 rule_dealloc(struct rule *rule_)
5333 struct rule_dpif *rule = rule_dpif_cast(rule_);
5338 rule_construct(struct rule *rule_)
5340 struct rule_dpif *rule = rule_dpif_cast(rule_);
5341 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5342 struct rule_dpif *victim;
5345 rule->packet_count = 0;
5346 rule->byte_count = 0;
5348 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
5349 if (victim && !list_is_empty(&victim->facets)) {
5350 struct facet *facet;
5352 rule->facets = victim->facets;
5353 list_moved(&rule->facets);
5354 LIST_FOR_EACH (facet, list_node, &rule->facets) {
5355 /* XXX: We're only clearing our local counters here. It's possible
5356 * that quite a few packets are unaccounted for in the datapath
5357 * statistics. These will be accounted to the new rule instead of
5358 * cleared as required. This could be fixed by clearing out the
5359 * datapath statistics for this facet, but currently it doesn't
5361 facet_reset_counters(facet);
5365 /* Must avoid list_moved() in this case. */
5366 list_init(&rule->facets);
5369 table_id = rule->up.table_id;
5371 rule->tag = victim->tag;
5372 } else if (table_id == 0) {
5377 miniflow_expand(&rule->up.cr.match.flow, &flow);
5378 rule->tag = rule_calculate_tag(&flow, &rule->up.cr.match.mask,
5379 ofproto->tables[table_id].basis);
5382 complete_operation(rule);
5387 rule_destruct(struct rule *rule_)
5389 struct rule_dpif *rule = rule_dpif_cast(rule_);
5390 struct facet *facet, *next_facet;
5392 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
5393 facet_revalidate(facet);
5396 complete_operation(rule);
5400 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
5402 struct rule_dpif *rule = rule_dpif_cast(rule_);
5403 struct facet *facet;
5405 /* Start from historical data for 'rule' itself that are no longer tracked
5406 * in facets. This counts, for example, facets that have expired. */
5407 *packets = rule->packet_count;
5408 *bytes = rule->byte_count;
5410 /* Add any statistics that are tracked by facets. This includes
5411 * statistical data recently updated by ofproto_update_stats() as well as
5412 * stats for packets that were executed "by hand" via dpif_execute(). */
5413 LIST_FOR_EACH (facet, list_node, &rule->facets) {
5414 *packets += facet->packet_count;
5415 *bytes += facet->byte_count;
5420 rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
5421 struct ofpbuf *packet)
5423 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5425 struct dpif_flow_stats stats;
5427 struct action_xlate_ctx ctx;
5428 uint64_t odp_actions_stub[1024 / 8];
5429 struct ofpbuf odp_actions;
5431 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5432 rule_credit_stats(rule, &stats);
5434 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
5435 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
5436 rule, stats.tcp_flags, packet);
5437 ctx.resubmit_stats = &stats;
5438 xlate_actions(&ctx, rule->up.ofpacts, rule->up.ofpacts_len, &odp_actions);
5440 execute_odp_actions(ofproto, flow, odp_actions.data,
5441 odp_actions.size, packet);
5443 ofpbuf_uninit(&odp_actions);
5447 rule_execute(struct rule *rule, const struct flow *flow,
5448 struct ofpbuf *packet)
5450 rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
5451 ofpbuf_delete(packet);
5456 rule_modify_actions(struct rule *rule_)
5458 struct rule_dpif *rule = rule_dpif_cast(rule_);
5460 complete_operation(rule);
5463 /* Sends 'packet' out 'ofport'.
5464 * May modify 'packet'.
5465 * Returns 0 if successful, otherwise a positive errno value. */
5467 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
5469 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
5470 uint64_t odp_actions_stub[1024 / 8];
5471 struct ofpbuf key, odp_actions;
5472 struct odputil_keybuf keybuf;
5477 flow_extract(packet, 0, 0, NULL, OFPP_LOCAL, &flow);
5478 if (netdev_vport_is_patch(ofport->up.netdev)) {
5479 struct ofproto_dpif *peer_ofproto;
5480 struct dpif_flow_stats stats;
5481 struct ofport_dpif *peer;
5482 struct rule_dpif *rule;
5484 peer = ofport_get_peer(ofport);
5489 dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
5490 netdev_vport_inc_tx(ofport->up.netdev, &stats);
5491 netdev_vport_inc_rx(peer->up.netdev, &stats);
5493 flow.in_port = peer->up.ofp_port;
5494 peer_ofproto = ofproto_dpif_cast(peer->up.ofproto);
5495 rule = rule_dpif_lookup(peer_ofproto, &flow);
5496 rule_dpif_execute(rule, &flow, packet);
5501 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
5503 if (ofport->tnl_port) {
5504 struct dpif_flow_stats stats;
5506 odp_port = tnl_port_send(ofport->tnl_port, &flow);
5507 if (odp_port == OVSP_NONE) {
5511 dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
5512 netdev_vport_inc_tx(ofport->up.netdev, &stats);
5513 odp_put_tunnel_action(&flow.tunnel, &odp_actions);
5515 odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
5517 if (odp_port != ofport->odp_port) {
5518 eth_pop_vlan(packet);
5519 flow.vlan_tci = htons(0);
5523 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5524 odp_flow_key_from_flow(&key, &flow,
5525 ofp_port_to_odp_port(ofproto, flow.in_port));
5527 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
5529 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
5530 error = dpif_execute(ofproto->backer->dpif,
5532 odp_actions.data, odp_actions.size,
5534 ofpbuf_uninit(&odp_actions);
5537 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
5538 ofproto->up.name, odp_port, strerror(error));
5540 ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0);
5544 /* OpenFlow to datapath action translation. */
5546 static bool may_receive(const struct ofport_dpif *, struct action_xlate_ctx *);
5547 static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len,
5548 struct action_xlate_ctx *);
5549 static void xlate_normal(struct action_xlate_ctx *);
5551 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5552 * The action will state 'slow' as the reason that the action is in the slow
5553 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5554 * dump-flows" output to see why a flow is in the slow path.)
5556 * The 'stub_size' bytes in 'stub' will be used to store the action.
5557 * 'stub_size' must be large enough for the action.
5559 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5562 compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
5563 enum slow_path_reason slow,
5564 uint64_t *stub, size_t stub_size,
5565 const struct nlattr **actionsp, size_t *actions_lenp)
5567 union user_action_cookie cookie;
5570 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
5571 cookie.slow_path.unused = 0;
5572 cookie.slow_path.reason = slow;
5574 ofpbuf_use_stack(&buf, stub, stub_size);
5575 if (slow & (SLOW_CFM | SLOW_LACP | SLOW_STP)) {
5576 uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif, UINT32_MAX);
5577 odp_put_userspace_action(pid, &cookie, &buf);
5579 put_userspace_action(ofproto, &buf, flow, &cookie);
5581 *actionsp = buf.data;
5582 *actions_lenp = buf.size;
5586 put_userspace_action(const struct ofproto_dpif *ofproto,
5587 struct ofpbuf *odp_actions,
5588 const struct flow *flow,
5589 const union user_action_cookie *cookie)
5593 pid = dpif_port_get_pid(ofproto->backer->dpif,
5594 ofp_port_to_odp_port(ofproto, flow->in_port));
5596 return odp_put_userspace_action(pid, cookie, odp_actions);
5600 compose_sflow_cookie(const struct ofproto_dpif *ofproto,
5601 ovs_be16 vlan_tci, uint32_t odp_port,
5602 unsigned int n_outputs, union user_action_cookie *cookie)
5606 cookie->type = USER_ACTION_COOKIE_SFLOW;
5607 cookie->sflow.vlan_tci = vlan_tci;
5609 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
5610 * port information") for the interpretation of cookie->output. */
5611 switch (n_outputs) {
5613 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
5614 cookie->sflow.output = 0x40000000 | 256;
5618 ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
5620 cookie->sflow.output = ifindex;
5625 /* 0x80000000 means "multiple output ports. */
5626 cookie->sflow.output = 0x80000000 | n_outputs;
5631 /* Compose SAMPLE action for sFlow. */
5633 compose_sflow_action(const struct ofproto_dpif *ofproto,
5634 struct ofpbuf *odp_actions,
5635 const struct flow *flow,
5638 uint32_t probability;
5639 union user_action_cookie cookie;
5640 size_t sample_offset, actions_offset;
5643 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
5647 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
5649 /* Number of packets out of UINT_MAX to sample. */
5650 probability = dpif_sflow_get_probability(ofproto->sflow);
5651 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
5653 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
5654 compose_sflow_cookie(ofproto, htons(0), odp_port,
5655 odp_port == OVSP_NONE ? 0 : 1, &cookie);
5656 cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
5658 nl_msg_end_nested(odp_actions, actions_offset);
5659 nl_msg_end_nested(odp_actions, sample_offset);
5660 return cookie_offset;
5663 /* SAMPLE action must be first action in any given list of actions.
5664 * At this point we do not have all information required to build it. So try to
5665 * build sample action as complete as possible. */
5667 add_sflow_action(struct action_xlate_ctx *ctx)
5669 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
5671 &ctx->flow, OVSP_NONE);
5672 ctx->sflow_odp_port = 0;
5673 ctx->sflow_n_outputs = 0;
5676 /* Fix SAMPLE action according to data collected while composing ODP actions.
5677 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
5678 * USERSPACE action's user-cookie which is required for sflow. */
5680 fix_sflow_action(struct action_xlate_ctx *ctx)
5682 const struct flow *base = &ctx->base_flow;
5683 union user_action_cookie *cookie;
5685 if (!ctx->user_cookie_offset) {
5689 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
5691 ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
5693 compose_sflow_cookie(ctx->ofproto, base->vlan_tci,
5694 ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie);
5698 compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
5701 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
5702 ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
5703 ovs_be64 flow_tun_id = ctx->flow.tunnel.tun_id;
5704 uint8_t flow_nw_tos = ctx->flow.nw_tos;
5705 struct priority_to_dscp *pdscp;
5706 uint32_t out_port, odp_port;
5708 /* If 'struct flow' gets additional metadata, we'll need to zero it out
5709 * before traversing a patch port. */
5710 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 19);
5713 xlate_report(ctx, "Nonexistent output port");
5715 } else if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD) {
5716 xlate_report(ctx, "OFPPC_NO_FWD set, skipping output");
5718 } else if (check_stp && !stp_forward_in_state(ofport->stp_state)) {
5719 xlate_report(ctx, "STP not in forwarding state, skipping output");
5723 if (netdev_vport_is_patch(ofport->up.netdev)) {
5724 struct ofport_dpif *peer = ofport_get_peer(ofport);
5725 struct flow old_flow = ctx->flow;
5726 const struct ofproto_dpif *peer_ofproto;
5727 struct ofport_dpif *in_port;
5730 xlate_report(ctx, "Nonexistent patch port peer");
5734 peer_ofproto = ofproto_dpif_cast(peer->up.ofproto);
5735 if (peer_ofproto->backer != ctx->ofproto->backer) {
5736 xlate_report(ctx, "Patch port peer on a different datapath");
5740 ctx->ofproto = ofproto_dpif_cast(peer->up.ofproto);
5741 ctx->flow.in_port = peer->up.ofp_port;
5742 ctx->flow.metadata = htonll(0);
5743 memset(&ctx->flow.tunnel, 0, sizeof ctx->flow.tunnel);
5744 memset(ctx->flow.regs, 0, sizeof ctx->flow.regs);
5746 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
5747 if (!in_port || may_receive(in_port, ctx)) {
5748 if (!in_port || stp_forward_in_state(in_port->stp_state)) {
5749 xlate_table_action(ctx, ctx->flow.in_port, 0, true);
5751 /* Forwarding is disabled by STP. Let OFPP_NORMAL and the
5752 * learning action look at the packet, then drop it. */
5753 struct flow old_base_flow = ctx->base_flow;
5754 size_t old_size = ctx->odp_actions->size;
5755 xlate_table_action(ctx, ctx->flow.in_port, 0, true);
5756 ctx->base_flow = old_base_flow;
5757 ctx->odp_actions->size = old_size;
5761 ctx->flow = old_flow;
5762 ctx->ofproto = ofproto_dpif_cast(ofport->up.ofproto);
5764 if (ctx->resubmit_stats) {
5765 netdev_vport_inc_tx(ofport->up.netdev, ctx->resubmit_stats);
5766 netdev_vport_inc_rx(peer->up.netdev, ctx->resubmit_stats);
5772 pdscp = get_priority(ofport, ctx->flow.skb_priority);
5774 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
5775 ctx->flow.nw_tos |= pdscp->dscp;
5778 odp_port = ofp_port_to_odp_port(ctx->ofproto, ofp_port);
5779 if (ofport->tnl_port) {
5780 odp_port = tnl_port_send(ofport->tnl_port, &ctx->flow);
5781 if (odp_port == OVSP_NONE) {
5782 xlate_report(ctx, "Tunneling decided against output");
5786 if (ctx->resubmit_stats) {
5787 netdev_vport_inc_tx(ofport->up.netdev, ctx->resubmit_stats);
5789 out_port = odp_port;
5790 commit_odp_tunnel_action(&ctx->flow, &ctx->base_flow,
5793 out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
5794 ctx->flow.vlan_tci);
5795 if (out_port != odp_port) {
5796 ctx->flow.vlan_tci = htons(0);
5799 commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
5800 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
5802 ctx->sflow_odp_port = odp_port;
5803 ctx->sflow_n_outputs++;
5804 ctx->nf_output_iface = ofp_port;
5805 ctx->flow.tunnel.tun_id = flow_tun_id;
5806 ctx->flow.vlan_tci = flow_vlan_tci;
5807 ctx->flow.nw_tos = flow_nw_tos;
5811 compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
5813 compose_output_action__(ctx, ofp_port, true);
5817 xlate_table_action(struct action_xlate_ctx *ctx,
5818 uint16_t in_port, uint8_t table_id, bool may_packet_in)
5820 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
5821 struct ofproto_dpif *ofproto = ctx->ofproto;
5822 struct rule_dpif *rule;
5823 uint16_t old_in_port;
5824 uint8_t old_table_id;
5826 old_table_id = ctx->table_id;
5827 ctx->table_id = table_id;
5829 /* Look up a flow with 'in_port' as the input port. */
5830 old_in_port = ctx->flow.in_port;
5831 ctx->flow.in_port = in_port;
5832 rule = rule_dpif_lookup__(ofproto, &ctx->flow, table_id);
5835 if (table_id > 0 && table_id < N_TABLES) {
5836 struct table_dpif *table = &ofproto->tables[table_id];
5837 if (table->other_table) {
5838 ctx->tags |= (rule && rule->tag
5840 : rule_calculate_tag(&ctx->flow,
5841 &table->other_table->mask,
5846 /* Restore the original input port. Otherwise OFPP_NORMAL and
5847 * OFPP_IN_PORT will have surprising behavior. */
5848 ctx->flow.in_port = old_in_port;
5850 if (ctx->resubmit_hook) {
5851 ctx->resubmit_hook(ctx, rule);
5854 if (rule == NULL && may_packet_in) {
5856 * check if table configuration flags
5857 * OFPTC_TABLE_MISS_CONTROLLER, default.
5858 * OFPTC_TABLE_MISS_CONTINUE,
5859 * OFPTC_TABLE_MISS_DROP
5860 * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do?
5862 rule = rule_dpif_miss_rule(ofproto, &ctx->flow);
5866 struct rule_dpif *old_rule = ctx->rule;
5868 if (ctx->resubmit_stats) {
5869 rule_credit_stats(rule, ctx->resubmit_stats);
5874 do_xlate_actions(rule->up.ofpacts, rule->up.ofpacts_len, ctx);
5875 ctx->rule = old_rule;
5879 ctx->table_id = old_table_id;
5881 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
5883 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
5884 MAX_RESUBMIT_RECURSION);
5885 ctx->max_resubmit_trigger = true;
5890 xlate_ofpact_resubmit(struct action_xlate_ctx *ctx,
5891 const struct ofpact_resubmit *resubmit)
5896 in_port = resubmit->in_port;
5897 if (in_port == OFPP_IN_PORT) {
5898 in_port = ctx->flow.in_port;
5901 table_id = resubmit->table_id;
5902 if (table_id == 255) {
5903 table_id = ctx->table_id;
5906 xlate_table_action(ctx, in_port, table_id, false);
5910 flood_packets(struct action_xlate_ctx *ctx, bool all)
5912 struct ofport_dpif *ofport;
5914 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
5915 uint16_t ofp_port = ofport->up.ofp_port;
5917 if (ofp_port == ctx->flow.in_port) {
5922 compose_output_action__(ctx, ofp_port, false);
5923 } else if (!(ofport->up.pp.config & OFPUTIL_PC_NO_FLOOD)) {
5924 compose_output_action(ctx, ofp_port);
5928 ctx->nf_output_iface = NF_OUT_FLOOD;
5932 execute_controller_action(struct action_xlate_ctx *ctx, int len,
5933 enum ofp_packet_in_reason reason,
5934 uint16_t controller_id)
5936 struct ofputil_packet_in pin;
5937 struct ofpbuf *packet;
5939 ctx->slow |= SLOW_CONTROLLER;
5944 packet = ofpbuf_clone(ctx->packet);
5946 if (packet->l2 && packet->l3) {
5947 struct eth_header *eh;
5948 uint16_t mpls_depth;
5950 eth_pop_vlan(packet);
5953 memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
5954 memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
5956 if (ctx->flow.vlan_tci & htons(VLAN_CFI)) {
5957 eth_push_vlan(packet, ctx->flow.vlan_tci);
5960 mpls_depth = eth_mpls_depth(packet);
5962 if (mpls_depth < ctx->flow.mpls_depth) {
5963 push_mpls(packet, ctx->flow.dl_type, ctx->flow.mpls_lse);
5964 } else if (mpls_depth > ctx->flow.mpls_depth) {
5965 pop_mpls(packet, ctx->flow.dl_type);
5966 } else if (mpls_depth) {
5967 set_mpls_lse(packet, ctx->flow.mpls_lse);
5971 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
5972 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
5973 ctx->flow.nw_tos, ctx->flow.nw_ttl);
5977 if (ctx->flow.nw_proto == IPPROTO_TCP) {
5978 packet_set_tcp_port(packet, ctx->flow.tp_src,
5980 } else if (ctx->flow.nw_proto == IPPROTO_UDP) {
5981 packet_set_udp_port(packet, ctx->flow.tp_src,
5988 pin.packet = packet->data;
5989 pin.packet_len = packet->size;
5990 pin.reason = reason;
5991 pin.controller_id = controller_id;
5992 pin.table_id = ctx->table_id;
5993 pin.cookie = ctx->rule ? ctx->rule->up.flow_cookie : 0;
5996 flow_get_metadata(&ctx->flow, &pin.fmd);
5998 connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin);
5999 ofpbuf_delete(packet);
6003 execute_mpls_push_action(struct action_xlate_ctx *ctx, ovs_be16 eth_type)
6005 ovs_assert(eth_type_mpls(eth_type));
6007 if (ctx->base_flow.mpls_depth) {
6008 ctx->flow.mpls_lse &= ~htonl(MPLS_BOS_MASK);
6009 ctx->flow.mpls_depth++;
6014 if (ctx->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6015 label = htonl(0x2); /* IPV6 Explicit Null. */
6017 label = htonl(0x0); /* IPV4 Explicit Null. */
6019 tc = (ctx->flow.nw_tos & IP_DSCP_MASK) >> 2;
6020 ttl = ctx->flow.nw_ttl ? ctx->flow.nw_ttl : 0x40;
6021 ctx->flow.mpls_lse = set_mpls_lse_values(ttl, tc, 1, label);
6022 ctx->flow.encap_dl_type = ctx->flow.dl_type;
6023 ctx->flow.mpls_depth = 1;
6025 ctx->flow.dl_type = eth_type;
6029 execute_mpls_pop_action(struct action_xlate_ctx *ctx, ovs_be16 eth_type)
6031 ovs_assert(eth_type_mpls(ctx->flow.dl_type));
6032 ovs_assert(!eth_type_mpls(eth_type));
6034 if (ctx->flow.mpls_depth) {
6035 ctx->flow.mpls_depth--;
6036 ctx->flow.mpls_lse = htonl(0);
6037 if (!ctx->flow.mpls_depth) {
6038 ctx->flow.dl_type = eth_type;
6039 ctx->flow.encap_dl_type = htons(0);
6045 compose_dec_ttl(struct action_xlate_ctx *ctx, struct ofpact_cnt_ids *ids)
6047 if (ctx->flow.dl_type != htons(ETH_TYPE_IP) &&
6048 ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) {
6052 if (ctx->flow.nw_ttl > 1) {
6058 for (i = 0; i < ids->n_controllers; i++) {
6059 execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL,
6063 /* Stop processing for current table. */
6069 xlate_output_action(struct action_xlate_ctx *ctx,
6070 uint16_t port, uint16_t max_len, bool may_packet_in)
6072 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
6074 ctx->nf_output_iface = NF_OUT_DROP;
6078 compose_output_action(ctx, ctx->flow.in_port);
6081 xlate_table_action(ctx, ctx->flow.in_port, 0, may_packet_in);
6087 flood_packets(ctx, false);
6090 flood_packets(ctx, true);
6092 case OFPP_CONTROLLER:
6093 execute_controller_action(ctx, max_len, OFPR_ACTION, 0);
6099 if (port != ctx->flow.in_port) {
6100 compose_output_action(ctx, port);
6102 xlate_report(ctx, "skipping output to input port");
6107 if (prev_nf_output_iface == NF_OUT_FLOOD) {
6108 ctx->nf_output_iface = NF_OUT_FLOOD;
6109 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
6110 ctx->nf_output_iface = prev_nf_output_iface;
6111 } else if (prev_nf_output_iface != NF_OUT_DROP &&
6112 ctx->nf_output_iface != NF_OUT_FLOOD) {
6113 ctx->nf_output_iface = NF_OUT_MULTI;
6118 xlate_output_reg_action(struct action_xlate_ctx *ctx,
6119 const struct ofpact_output_reg *or)
6121 uint64_t port = mf_get_subfield(&or->src, &ctx->flow);
6122 if (port <= UINT16_MAX) {
6123 xlate_output_action(ctx, port, or->max_len, false);
6128 xlate_enqueue_action(struct action_xlate_ctx *ctx,
6129 const struct ofpact_enqueue *enqueue)
6131 uint16_t ofp_port = enqueue->port;
6132 uint32_t queue_id = enqueue->queue;
6133 uint32_t flow_priority, priority;
6136 /* Translate queue to priority. */
6137 error = dpif_queue_to_priority(ctx->ofproto->backer->dpif,
6138 queue_id, &priority);
6140 /* Fall back to ordinary output action. */
6141 xlate_output_action(ctx, enqueue->port, 0, false);
6145 /* Check output port. */
6146 if (ofp_port == OFPP_IN_PORT) {
6147 ofp_port = ctx->flow.in_port;
6148 } else if (ofp_port == ctx->flow.in_port) {
6152 /* Add datapath actions. */
6153 flow_priority = ctx->flow.skb_priority;
6154 ctx->flow.skb_priority = priority;
6155 compose_output_action(ctx, ofp_port);
6156 ctx->flow.skb_priority = flow_priority;
6158 /* Update NetFlow output port. */
6159 if (ctx->nf_output_iface == NF_OUT_DROP) {
6160 ctx->nf_output_iface = ofp_port;
6161 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
6162 ctx->nf_output_iface = NF_OUT_MULTI;
6167 xlate_set_queue_action(struct action_xlate_ctx *ctx, uint32_t queue_id)
6169 uint32_t skb_priority;
6171 if (!dpif_queue_to_priority(ctx->ofproto->backer->dpif,
6172 queue_id, &skb_priority)) {
6173 ctx->flow.skb_priority = skb_priority;
6175 /* Couldn't translate queue to a priority. Nothing to do. A warning
6176 * has already been logged. */
6180 struct xlate_reg_state {
6186 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
6188 struct ofproto_dpif *ofproto = ofproto_;
6189 struct ofport_dpif *port;
6199 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
6202 port = get_ofp_port(ofproto, ofp_port);
6203 return port ? port->may_enable : false;
6208 xlate_bundle_action(struct action_xlate_ctx *ctx,
6209 const struct ofpact_bundle *bundle)
6213 port = bundle_execute(bundle, &ctx->flow, slave_enabled_cb, ctx->ofproto);
6214 if (bundle->dst.field) {
6215 nxm_reg_load(&bundle->dst, port, &ctx->flow);
6217 xlate_output_action(ctx, port, 0, false);
6222 xlate_learn_action(struct action_xlate_ctx *ctx,
6223 const struct ofpact_learn *learn)
6225 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
6226 struct ofputil_flow_mod fm;
6227 uint64_t ofpacts_stub[1024 / 8];
6228 struct ofpbuf ofpacts;
6231 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
6232 learn_execute(learn, &ctx->flow, &fm, &ofpacts);
6234 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
6235 if (error && !VLOG_DROP_WARN(&rl)) {
6236 VLOG_WARN("learning action failed to modify flow table (%s)",
6237 ofperr_get_name(error));
6240 ofpbuf_uninit(&ofpacts);
6243 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
6244 * means "infinite". */
6246 reduce_timeout(uint16_t max, uint16_t *timeout)
6248 if (max && (!*timeout || *timeout > max)) {
6254 xlate_fin_timeout(struct action_xlate_ctx *ctx,
6255 const struct ofpact_fin_timeout *oft)
6257 if (ctx->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) {
6258 struct rule_dpif *rule = ctx->rule;
6260 reduce_timeout(oft->fin_idle_timeout, &rule->up.idle_timeout);
6261 reduce_timeout(oft->fin_hard_timeout, &rule->up.hard_timeout);
6266 may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
6268 if (port->up.pp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
6269 ? OFPUTIL_PC_NO_RECV_STP
6270 : OFPUTIL_PC_NO_RECV)) {
6274 /* Only drop packets here if both forwarding and learning are
6275 * disabled. If just learning is enabled, we need to have
6276 * OFPP_NORMAL and the learning action have a look at the packet
6277 * before we can drop it. */
6278 if (!stp_forward_in_state(port->stp_state)
6279 && !stp_learn_in_state(port->stp_state)) {
6287 do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
6288 struct action_xlate_ctx *ctx)
6290 bool was_evictable = true;
6291 const struct ofpact *a;
6294 /* Don't let the rule we're working on get evicted underneath us. */
6295 was_evictable = ctx->rule->up.evictable;
6296 ctx->rule->up.evictable = false;
6298 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
6299 struct ofpact_controller *controller;
6300 const struct ofpact_metadata *metadata;
6308 xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port,
6309 ofpact_get_OUTPUT(a)->max_len, true);
6312 case OFPACT_CONTROLLER:
6313 controller = ofpact_get_CONTROLLER(a);
6314 execute_controller_action(ctx, controller->max_len,
6316 controller->controller_id);
6319 case OFPACT_ENQUEUE:
6320 xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a));
6323 case OFPACT_SET_VLAN_VID:
6324 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
6325 ctx->flow.vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid)
6329 case OFPACT_SET_VLAN_PCP:
6330 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
6331 ctx->flow.vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp
6336 case OFPACT_STRIP_VLAN:
6337 ctx->flow.vlan_tci = htons(0);
6340 case OFPACT_PUSH_VLAN:
6341 /* XXX 802.1AD(QinQ) */
6342 ctx->flow.vlan_tci = htons(VLAN_CFI);
6345 case OFPACT_SET_ETH_SRC:
6346 memcpy(ctx->flow.dl_src, ofpact_get_SET_ETH_SRC(a)->mac,
6350 case OFPACT_SET_ETH_DST:
6351 memcpy(ctx->flow.dl_dst, ofpact_get_SET_ETH_DST(a)->mac,
6355 case OFPACT_SET_IPV4_SRC:
6356 ctx->flow.nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4;
6359 case OFPACT_SET_IPV4_DST:
6360 ctx->flow.nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4;
6363 case OFPACT_SET_IPV4_DSCP:
6364 /* OpenFlow 1.0 only supports IPv4. */
6365 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
6366 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
6367 ctx->flow.nw_tos |= ofpact_get_SET_IPV4_DSCP(a)->dscp;
6371 case OFPACT_SET_L4_SRC_PORT:
6372 ctx->flow.tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
6375 case OFPACT_SET_L4_DST_PORT:
6376 ctx->flow.tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
6379 case OFPACT_RESUBMIT:
6380 xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a));
6383 case OFPACT_SET_TUNNEL:
6384 ctx->flow.tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id);
6387 case OFPACT_SET_QUEUE:
6388 xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id);
6391 case OFPACT_POP_QUEUE:
6392 ctx->flow.skb_priority = ctx->orig_skb_priority;
6395 case OFPACT_REG_MOVE:
6396 nxm_execute_reg_move(ofpact_get_REG_MOVE(a), &ctx->flow);
6399 case OFPACT_REG_LOAD:
6400 nxm_execute_reg_load(ofpact_get_REG_LOAD(a), &ctx->flow);
6403 case OFPACT_PUSH_MPLS:
6404 execute_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)->ethertype);
6407 case OFPACT_POP_MPLS:
6408 execute_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype);
6411 case OFPACT_DEC_TTL:
6412 if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) {
6418 /* Nothing to do. */
6421 case OFPACT_MULTIPATH:
6422 multipath_execute(ofpact_get_MULTIPATH(a), &ctx->flow);
6426 ctx->ofproto->has_bundle_action = true;
6427 xlate_bundle_action(ctx, ofpact_get_BUNDLE(a));
6430 case OFPACT_OUTPUT_REG:
6431 xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a));
6435 ctx->has_learn = true;
6436 if (ctx->may_learn) {
6437 xlate_learn_action(ctx, ofpact_get_LEARN(a));
6445 case OFPACT_FIN_TIMEOUT:
6446 ctx->has_fin_timeout = true;
6447 xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a));
6450 case OFPACT_CLEAR_ACTIONS:
6452 * Nothing to do because writa-actions is not supported for now.
6453 * When writa-actions is supported, clear-actions also must
6454 * be supported at the same time.
6458 case OFPACT_WRITE_METADATA:
6459 metadata = ofpact_get_WRITE_METADATA(a);
6460 ctx->flow.metadata &= ~metadata->mask;
6461 ctx->flow.metadata |= metadata->metadata & metadata->mask;
6464 case OFPACT_GOTO_TABLE: {
6465 /* XXX remove recursion */
6466 /* It is assumed that goto-table is last action */
6467 struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a);
6468 ovs_assert(ctx->table_id < ogt->table_id);
6469 xlate_table_action(ctx, ctx->flow.in_port, ogt->table_id, true);
6477 ctx->rule->up.evictable = was_evictable;
6482 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
6483 struct ofproto_dpif *ofproto, const struct flow *flow,
6484 ovs_be16 initial_tci, struct rule_dpif *rule,
6485 uint8_t tcp_flags, const struct ofpbuf *packet)
6487 ovs_be64 initial_tun_id = flow->tunnel.tun_id;
6489 /* Flow initialization rules:
6490 * - 'base_flow' must match the kernel's view of the packet at the
6491 * time that action processing starts. 'flow' represents any
6492 * transformations we wish to make through actions.
6493 * - By default 'base_flow' and 'flow' are the same since the input
6494 * packet matches the output before any actions are applied.
6495 * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
6496 * of the received packet as seen by the kernel. If we later output
6497 * to another device without any modifications this will cause us to
6498 * insert a new tag since the original one was stripped off by the
6500 * - Tunnel 'flow' is largely cleared when transitioning between
6501 * the input and output stages since it does not make sense to output
6502 * a packet with the exact headers that it was received with (i.e.
6503 * the destination IP is us). The one exception is the tun_id, which
6504 * is preserved to allow use in later resubmit lookups and loads into
6506 * - Tunnel 'base_flow' is completely cleared since that is what the
6507 * kernel does. If we wish to maintain the original values an action
6508 * needs to be generated. */
6510 ctx->ofproto = ofproto;
6512 memset(&ctx->flow.tunnel, 0, sizeof ctx->flow.tunnel);
6513 ctx->base_flow = ctx->flow;
6514 ctx->base_flow.vlan_tci = initial_tci;
6515 ctx->flow.tunnel.tun_id = initial_tun_id;
6517 ctx->packet = packet;
6518 ctx->may_learn = packet != NULL;
6519 ctx->tcp_flags = tcp_flags;
6520 ctx->resubmit_hook = NULL;
6521 ctx->report_hook = NULL;
6522 ctx->resubmit_stats = NULL;
6525 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
6526 * into datapath actions in 'odp_actions', using 'ctx'. */
6528 xlate_actions(struct action_xlate_ctx *ctx,
6529 const struct ofpact *ofpacts, size_t ofpacts_len,
6530 struct ofpbuf *odp_actions)
6532 /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
6533 * that in the future we always keep a copy of the original flow for
6534 * tracing purposes. */
6535 static bool hit_resubmit_limit;
6537 enum slow_path_reason special;
6538 struct ofport_dpif *in_port;
6540 COVERAGE_INC(ofproto_dpif_xlate);
6542 ofpbuf_clear(odp_actions);
6543 ofpbuf_reserve(odp_actions, NL_A_U32_SIZE);
6545 ctx->odp_actions = odp_actions;
6548 ctx->has_learn = false;
6549 ctx->has_normal = false;
6550 ctx->has_fin_timeout = false;
6551 ctx->nf_output_iface = NF_OUT_DROP;
6554 ctx->max_resubmit_trigger = false;
6555 ctx->orig_skb_priority = ctx->flow.skb_priority;
6559 if (ctx->ofproto->has_mirrors || hit_resubmit_limit) {
6560 /* Do this conditionally because the copy is expensive enough that it
6561 * shows up in profiles.
6563 * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4
6564 * believe that I wasn't using it without initializing it if I kept it
6565 * in a local variable. */
6566 ctx->orig_flow = ctx->flow;
6569 if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
6570 switch (ctx->ofproto->up.frag_handling) {
6571 case OFPC_FRAG_NORMAL:
6572 /* We must pretend that transport ports are unavailable. */
6573 ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0);
6574 ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0);
6577 case OFPC_FRAG_DROP:
6580 case OFPC_FRAG_REASM:
6583 case OFPC_FRAG_NX_MATCH:
6584 /* Nothing to do. */
6587 case OFPC_INVALID_TTL_TO_CONTROLLER:
6592 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
6593 special = process_special(ctx->ofproto, &ctx->flow, in_port, ctx->packet);
6595 ctx->slow |= special;
6597 static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
6598 ovs_be16 initial_tci = ctx->base_flow.vlan_tci;
6599 uint32_t local_odp_port;
6601 add_sflow_action(ctx);
6603 if (!in_port || may_receive(in_port, ctx)) {
6604 do_xlate_actions(ofpacts, ofpacts_len, ctx);
6606 /* We've let OFPP_NORMAL and the learning action look at the
6607 * packet, so drop it now if forwarding is disabled. */
6608 if (in_port && !stp_forward_in_state(in_port->stp_state)) {
6609 ofpbuf_clear(ctx->odp_actions);
6610 add_sflow_action(ctx);
6614 if (ctx->max_resubmit_trigger && !ctx->resubmit_hook) {
6615 if (!hit_resubmit_limit) {
6616 /* We didn't record the original flow. Make sure we do from
6618 hit_resubmit_limit = true;
6619 } else if (!VLOG_DROP_ERR(&trace_rl)) {
6620 struct ds ds = DS_EMPTY_INITIALIZER;
6622 ofproto_trace(ctx->ofproto, &ctx->orig_flow, ctx->packet,
6624 VLOG_ERR("Trace triggered by excessive resubmit "
6625 "recursion:\n%s", ds_cstr(&ds));
6630 local_odp_port = ofp_port_to_odp_port(ctx->ofproto, OFPP_LOCAL);
6631 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
6633 ctx->odp_actions->data,
6634 ctx->odp_actions->size)) {
6635 ctx->slow |= SLOW_IN_BAND;
6637 && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
6639 compose_output_action(ctx, OFPP_LOCAL);
6642 if (ctx->ofproto->has_mirrors) {
6643 add_mirror_actions(ctx, &ctx->orig_flow);
6645 fix_sflow_action(ctx);
6649 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
6650 * into datapath actions, using 'ctx', and discards the datapath actions. */
6652 xlate_actions_for_side_effects(struct action_xlate_ctx *ctx,
6653 const struct ofpact *ofpacts,
6656 uint64_t odp_actions_stub[1024 / 8];
6657 struct ofpbuf odp_actions;
6659 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
6660 xlate_actions(ctx, ofpacts, ofpacts_len, &odp_actions);
6661 ofpbuf_uninit(&odp_actions);
6665 xlate_report(struct action_xlate_ctx *ctx, const char *s)
6667 if (ctx->report_hook) {
6668 ctx->report_hook(ctx, s);
6672 /* OFPP_NORMAL implementation. */
6674 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
6676 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
6677 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
6678 * the bundle on which the packet was received, returns the VLAN to which the
6681 * Both 'vid' and the return value are in the range 0...4095. */
6683 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
6685 switch (in_bundle->vlan_mode) {
6686 case PORT_VLAN_ACCESS:
6687 return in_bundle->vlan;
6690 case PORT_VLAN_TRUNK:
6693 case PORT_VLAN_NATIVE_UNTAGGED:
6694 case PORT_VLAN_NATIVE_TAGGED:
6695 return vid ? vid : in_bundle->vlan;
6702 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
6703 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
6706 * 'vid' should be the VID obtained from the 802.1Q header that was received as
6707 * part of a packet (specify 0 if there was no 802.1Q header), in the range
6710 input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn)
6712 /* Allow any VID on the OFPP_NONE port. */
6713 if (in_bundle == &ofpp_none_bundle) {
6717 switch (in_bundle->vlan_mode) {
6718 case PORT_VLAN_ACCESS:
6721 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
6722 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
6723 "packet received on port %s configured as VLAN "
6724 "%"PRIu16" access port",
6725 in_bundle->ofproto->up.name, vid,
6726 in_bundle->name, in_bundle->vlan);
6732 case PORT_VLAN_NATIVE_UNTAGGED:
6733 case PORT_VLAN_NATIVE_TAGGED:
6735 /* Port must always carry its native VLAN. */
6739 case PORT_VLAN_TRUNK:
6740 if (!ofbundle_includes_vlan(in_bundle, vid)) {
6742 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
6743 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet "
6744 "received on port %s not configured for trunking "
6746 in_bundle->ofproto->up.name, vid,
6747 in_bundle->name, vid);
6759 /* Given 'vlan', the VLAN that a packet belongs to, and
6760 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
6761 * that should be included in the 802.1Q header. (If the return value is 0,
6762 * then the 802.1Q header should only be included in the packet if there is a
6765 * Both 'vlan' and the return value are in the range 0...4095. */
6767 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
6769 switch (out_bundle->vlan_mode) {
6770 case PORT_VLAN_ACCESS:
6773 case PORT_VLAN_TRUNK:
6774 case PORT_VLAN_NATIVE_TAGGED:
6777 case PORT_VLAN_NATIVE_UNTAGGED:
6778 return vlan == out_bundle->vlan ? 0 : vlan;
6786 output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle,
6789 struct ofport_dpif *port;
6791 ovs_be16 tci, old_tci;
6793 vid = output_vlan_to_vid(out_bundle, vlan);
6794 if (!out_bundle->bond) {
6795 port = ofbundle_get_a_port(out_bundle);
6797 port = bond_choose_output_slave(out_bundle->bond, &ctx->flow,
6800 /* No slaves enabled, so drop packet. */
6805 old_tci = ctx->flow.vlan_tci;
6807 if (tci || out_bundle->use_priority_tags) {
6808 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
6810 tci |= htons(VLAN_CFI);
6813 ctx->flow.vlan_tci = tci;
6815 compose_output_action(ctx, port->up.ofp_port);
6816 ctx->flow.vlan_tci = old_tci;
6820 mirror_mask_ffs(mirror_mask_t mask)
6822 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
6827 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
6829 return (bundle->vlan_mode != PORT_VLAN_ACCESS
6830 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
6834 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
6836 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
6839 /* Returns an arbitrary interface within 'bundle'. */
6840 static struct ofport_dpif *
6841 ofbundle_get_a_port(const struct ofbundle *bundle)
6843 return CONTAINER_OF(list_front(&bundle->ports),
6844 struct ofport_dpif, bundle_node);
6848 vlan_is_mirrored(const struct ofmirror *m, int vlan)
6850 return !m->vlans || bitmap_is_set(m->vlans, vlan);
6854 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
6856 struct ofproto_dpif *ofproto = ctx->ofproto;
6857 mirror_mask_t mirrors;
6858 struct ofbundle *in_bundle;
6861 const struct nlattr *a;
6864 in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
6865 ctx->packet != NULL, NULL);
6869 mirrors = in_bundle->src_mirrors;
6871 /* Drop frames on bundles reserved for mirroring. */
6872 if (in_bundle->mirror_out) {
6873 if (ctx->packet != NULL) {
6874 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
6875 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
6876 "%s, which is reserved exclusively for mirroring",
6877 ctx->ofproto->up.name, in_bundle->name);
6883 vid = vlan_tci_to_vid(orig_flow->vlan_tci);
6884 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
6887 vlan = input_vid_to_vlan(in_bundle, vid);
6889 /* Look at the output ports to check for destination selections. */
6891 NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data,
6892 ctx->odp_actions->size) {
6893 enum ovs_action_attr type = nl_attr_type(a);
6894 struct ofport_dpif *ofport;
6896 if (type != OVS_ACTION_ATTR_OUTPUT) {
6900 ofport = get_odp_port(ofproto, nl_attr_get_u32(a));
6901 if (ofport && ofport->bundle) {
6902 mirrors |= ofport->bundle->dst_mirrors;
6910 /* Restore the original packet before adding the mirror actions. */
6911 ctx->flow = *orig_flow;
6916 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
6918 if (!vlan_is_mirrored(m, vlan)) {
6919 mirrors = zero_rightmost_1bit(mirrors);
6923 mirrors &= ~m->dup_mirrors;
6924 ctx->mirrors |= m->dup_mirrors;
6926 output_normal(ctx, m->out, vlan);
6927 } else if (vlan != m->out_vlan
6928 && !eth_addr_is_reserved(orig_flow->dl_dst)) {
6929 struct ofbundle *bundle;
6931 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
6932 if (ofbundle_includes_vlan(bundle, m->out_vlan)
6933 && !bundle->mirror_out) {
6934 output_normal(ctx, bundle, m->out_vlan);
6942 update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
6943 uint64_t packets, uint64_t bytes)
6949 for (; mirrors; mirrors = zero_rightmost_1bit(mirrors)) {
6952 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
6955 /* In normal circumstances 'm' will not be NULL. However,
6956 * if mirrors are reconfigured, we can temporarily get out
6957 * of sync in facet_revalidate(). We could "correct" the
6958 * mirror list before reaching here, but doing that would
6959 * not properly account the traffic stats we've currently
6960 * accumulated for previous mirror configuration. */
6964 m->packet_count += packets;
6965 m->byte_count += bytes;
6969 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
6970 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
6971 * indicate this; newer upstream kernels use gratuitous ARP requests. */
6973 is_gratuitous_arp(const struct flow *flow)
6975 return (flow->dl_type == htons(ETH_TYPE_ARP)
6976 && eth_addr_is_broadcast(flow->dl_dst)
6977 && (flow->nw_proto == ARP_OP_REPLY
6978 || (flow->nw_proto == ARP_OP_REQUEST
6979 && flow->nw_src == flow->nw_dst)));
6983 update_learning_table(struct ofproto_dpif *ofproto,
6984 const struct flow *flow, int vlan,
6985 struct ofbundle *in_bundle)
6987 struct mac_entry *mac;
6989 /* Don't learn the OFPP_NONE port. */
6990 if (in_bundle == &ofpp_none_bundle) {
6994 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
6998 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
6999 if (is_gratuitous_arp(flow)) {
7000 /* We don't want to learn from gratuitous ARP packets that are
7001 * reflected back over bond slaves so we lock the learning table. */
7002 if (!in_bundle->bond) {
7003 mac_entry_set_grat_arp_lock(mac);
7004 } else if (mac_entry_is_grat_arp_locked(mac)) {
7009 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
7010 /* The log messages here could actually be useful in debugging,
7011 * so keep the rate limit relatively high. */
7012 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
7013 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
7014 "on port %s in VLAN %d",
7015 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
7016 in_bundle->name, vlan);
7018 mac->port.p = in_bundle;
7019 tag_set_add(&ofproto->backer->revalidate_set,
7020 mac_learning_changed(ofproto->ml, mac));
7024 static struct ofbundle *
7025 lookup_input_bundle(const struct ofproto_dpif *ofproto, uint16_t in_port,
7026 bool warn, struct ofport_dpif **in_ofportp)
7028 struct ofport_dpif *ofport;
7030 /* Find the port and bundle for the received packet. */
7031 ofport = get_ofp_port(ofproto, in_port);
7033 *in_ofportp = ofport;
7035 if (ofport && ofport->bundle) {
7036 return ofport->bundle;
7039 /* Special-case OFPP_NONE, which a controller may use as the ingress
7040 * port for traffic that it is sourcing. */
7041 if (in_port == OFPP_NONE) {
7042 return &ofpp_none_bundle;
7045 /* Odd. A few possible reasons here:
7047 * - We deleted a port but there are still a few packets queued up
7050 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
7051 * we don't know about.
7053 * - The ofproto client didn't configure the port as part of a bundle.
7054 * This is particularly likely to happen if a packet was received on the
7055 * port after it was created, but before the client had a chance to
7056 * configure its bundle.
7059 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
7061 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
7062 "port %"PRIu16, ofproto->up.name, in_port);
7067 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
7068 * dropped. Returns true if they may be forwarded, false if they should be
7071 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
7072 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
7074 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
7075 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
7076 * checked by input_vid_is_valid().
7078 * May also add tags to '*tags', although the current implementation only does
7079 * so in one special case.
7082 is_admissible(struct action_xlate_ctx *ctx, struct ofport_dpif *in_port,
7085 struct ofproto_dpif *ofproto = ctx->ofproto;
7086 struct flow *flow = &ctx->flow;
7087 struct ofbundle *in_bundle = in_port->bundle;
7089 /* Drop frames for reserved multicast addresses
7090 * only if forward_bpdu option is absent. */
7091 if (!ofproto->up.forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) {
7092 xlate_report(ctx, "packet has reserved destination MAC, dropping");
7096 if (in_bundle->bond) {
7097 struct mac_entry *mac;
7099 switch (bond_check_admissibility(in_bundle->bond, in_port,
7100 flow->dl_dst, &ctx->tags)) {
7105 xlate_report(ctx, "bonding refused admissibility, dropping");
7108 case BV_DROP_IF_MOVED:
7109 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
7110 if (mac && mac->port.p != in_bundle &&
7111 (!is_gratuitous_arp(flow)
7112 || mac_entry_is_grat_arp_locked(mac))) {
7113 xlate_report(ctx, "SLB bond thinks this packet looped back, "
7125 xlate_normal(struct action_xlate_ctx *ctx)
7127 struct ofport_dpif *in_port;
7128 struct ofbundle *in_bundle;
7129 struct mac_entry *mac;
7133 ctx->has_normal = true;
7135 in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
7136 ctx->packet != NULL, &in_port);
7138 xlate_report(ctx, "no input bundle, dropping");
7142 /* Drop malformed frames. */
7143 if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
7144 !(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
7145 if (ctx->packet != NULL) {
7146 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
7147 VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial "
7148 "VLAN tag received on port %s",
7149 ctx->ofproto->up.name, in_bundle->name);
7151 xlate_report(ctx, "partial VLAN tag, dropping");
7155 /* Drop frames on bundles reserved for mirroring. */
7156 if (in_bundle->mirror_out) {
7157 if (ctx->packet != NULL) {
7158 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
7159 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
7160 "%s, which is reserved exclusively for mirroring",
7161 ctx->ofproto->up.name, in_bundle->name);
7163 xlate_report(ctx, "input port is mirror output port, dropping");
7168 vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
7169 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
7170 xlate_report(ctx, "disallowed VLAN VID for this input port, dropping");
7173 vlan = input_vid_to_vlan(in_bundle, vid);
7175 /* Check other admissibility requirements. */
7176 if (in_port && !is_admissible(ctx, in_port, vlan)) {
7180 /* Learn source MAC. */
7181 if (ctx->may_learn) {
7182 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
7185 /* Determine output bundle. */
7186 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
7189 if (mac->port.p != in_bundle) {
7190 xlate_report(ctx, "forwarding to learned port");
7191 output_normal(ctx, mac->port.p, vlan);
7193 xlate_report(ctx, "learned port is input port, dropping");
7196 struct ofbundle *bundle;
7198 xlate_report(ctx, "no learned MAC for destination, flooding");
7199 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
7200 if (bundle != in_bundle
7201 && ofbundle_includes_vlan(bundle, vlan)
7202 && bundle->floodable
7203 && !bundle->mirror_out) {
7204 output_normal(ctx, bundle, vlan);
7207 ctx->nf_output_iface = NF_OUT_FLOOD;
7211 /* Optimized flow revalidation.
7213 * It's a difficult problem, in general, to tell which facets need to have
7214 * their actions recalculated whenever the OpenFlow flow table changes. We
7215 * don't try to solve that general problem: for most kinds of OpenFlow flow
7216 * table changes, we recalculate the actions for every facet. This is
7217 * relatively expensive, but it's good enough if the OpenFlow flow table
7218 * doesn't change very often.
7220 * However, we can expect one particular kind of OpenFlow flow table change to
7221 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
7222 * of CPU on revalidating every facet whenever MAC learning modifies the flow
7223 * table, we add a special case that applies to flow tables in which every rule
7224 * has the same form (that is, the same wildcards), except that the table is
7225 * also allowed to have a single "catch-all" flow that matches all packets. We
7226 * optimize this case by tagging all of the facets that resubmit into the table
7227 * and invalidating the same tag whenever a flow changes in that table. The
7228 * end result is that we revalidate just the facets that need it (and sometimes
7229 * a few more, but not all of the facets or even all of the facets that
7230 * resubmit to the table modified by MAC learning). */
7232 /* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted
7233 * into an OpenFlow table with the given 'basis'. */
7235 rule_calculate_tag(const struct flow *flow, const struct minimask *mask,
7238 if (minimask_is_catchall(mask)) {
7241 uint32_t hash = flow_hash_in_minimask(flow, mask, secret);
7242 return tag_create_deterministic(hash);
7246 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
7247 * taggability of that table.
7249 * This function must be called after *each* change to a flow table. If you
7250 * skip calling it on some changes then the pointer comparisons at the end can
7251 * be invalid if you get unlucky. For example, if a flow removal causes a
7252 * cls_table to be destroyed and then a flow insertion causes a cls_table with
7253 * different wildcards to be created with the same address, then this function
7254 * will incorrectly skip revalidation. */
7256 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
7258 struct table_dpif *table = &ofproto->tables[table_id];
7259 const struct oftable *oftable = &ofproto->up.tables[table_id];
7260 struct cls_table *catchall, *other;
7261 struct cls_table *t;
7263 catchall = other = NULL;
7265 switch (hmap_count(&oftable->cls.tables)) {
7267 /* We could tag this OpenFlow table but it would make the logic a
7268 * little harder and it's a corner case that doesn't seem worth it
7274 HMAP_FOR_EACH (t, hmap_node, &oftable->cls.tables) {
7275 if (cls_table_is_catchall(t)) {
7277 } else if (!other) {
7280 /* Indicate that we can't tag this by setting both tables to
7281 * NULL. (We know that 'catchall' is already NULL.) */
7288 /* Can't tag this table. */
7292 if (table->catchall_table != catchall || table->other_table != other) {
7293 table->catchall_table = catchall;
7294 table->other_table = other;
7295 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
7299 /* Given 'rule' that has changed in some way (either it is a rule being
7300 * inserted, a rule being deleted, or a rule whose actions are being
7301 * modified), marks facets for revalidation to ensure that packets will be
7302 * forwarded correctly according to the new state of the flow table.
7304 * This function must be called after *each* change to a flow table. See
7305 * the comment on table_update_taggable() for more information. */
7307 rule_invalidate(const struct rule_dpif *rule)
7309 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
7311 table_update_taggable(ofproto, rule->up.table_id);
7313 if (!ofproto->backer->need_revalidate) {
7314 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
7316 if (table->other_table && rule->tag) {
7317 tag_set_add(&ofproto->backer->revalidate_set, rule->tag);
7319 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
7325 set_frag_handling(struct ofproto *ofproto_,
7326 enum ofp_config_flags frag_handling)
7328 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
7329 if (frag_handling != OFPC_FRAG_REASM) {
7330 ofproto->backer->need_revalidate = REV_RECONFIGURE;
7338 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
7339 const struct flow *flow,
7340 const struct ofpact *ofpacts, size_t ofpacts_len)
7342 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
7343 struct odputil_keybuf keybuf;
7344 struct dpif_flow_stats stats;
7348 struct action_xlate_ctx ctx;
7349 uint64_t odp_actions_stub[1024 / 8];
7350 struct ofpbuf odp_actions;
7352 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
7353 odp_flow_key_from_flow(&key, flow,
7354 ofp_port_to_odp_port(ofproto, flow->in_port));
7356 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
7358 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, NULL,
7359 packet_get_tcp_flags(packet, flow), packet);
7360 ctx.resubmit_stats = &stats;
7362 ofpbuf_use_stub(&odp_actions,
7363 odp_actions_stub, sizeof odp_actions_stub);
7364 xlate_actions(&ctx, ofpacts, ofpacts_len, &odp_actions);
7365 dpif_execute(ofproto->backer->dpif, key.data, key.size,
7366 odp_actions.data, odp_actions.size, packet);
7367 ofpbuf_uninit(&odp_actions);
7375 set_netflow(struct ofproto *ofproto_,
7376 const struct netflow_options *netflow_options)
7378 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
7380 if (netflow_options) {
7381 if (!ofproto->netflow) {
7382 ofproto->netflow = netflow_create();
7384 return netflow_set_options(ofproto->netflow, netflow_options);
7386 netflow_destroy(ofproto->netflow);
7387 ofproto->netflow = NULL;
7393 get_netflow_ids(const struct ofproto *ofproto_,
7394 uint8_t *engine_type, uint8_t *engine_id)
7396 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
7398 dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
7402 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
7404 if (!facet_is_controller_flow(facet) &&
7405 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
7406 struct subfacet *subfacet;
7407 struct ofexpired expired;
7409 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
7410 if (subfacet->path == SF_FAST_PATH) {
7411 struct dpif_flow_stats stats;
7413 subfacet_reinstall(subfacet, &stats);
7414 subfacet_update_stats(subfacet, &stats);
7418 expired.flow = facet->flow;
7419 expired.packet_count = facet->packet_count;
7420 expired.byte_count = facet->byte_count;
7421 expired.used = facet->used;
7422 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
7427 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
7429 struct facet *facet;
7431 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
7432 send_active_timeout(ofproto, facet);
7436 static struct ofproto_dpif *
7437 ofproto_dpif_lookup(const char *name)
7439 struct ofproto_dpif *ofproto;
7441 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
7442 hash_string(name, 0), &all_ofproto_dpifs) {
7443 if (!strcmp(ofproto->up.name, name)) {
7451 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
7452 const char *argv[], void *aux OVS_UNUSED)
7454 struct ofproto_dpif *ofproto;
7457 ofproto = ofproto_dpif_lookup(argv[1]);
7459 unixctl_command_reply_error(conn, "no such bridge");
7462 mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
7464 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
7465 mac_learning_flush(ofproto->ml, &ofproto->backer->revalidate_set);
7469 unixctl_command_reply(conn, "table successfully flushed");
7473 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
7474 const char *argv[], void *aux OVS_UNUSED)
7476 struct ds ds = DS_EMPTY_INITIALIZER;
7477 const struct ofproto_dpif *ofproto;
7478 const struct mac_entry *e;
7480 ofproto = ofproto_dpif_lookup(argv[1]);
7482 unixctl_command_reply_error(conn, "no such bridge");
7486 ds_put_cstr(&ds, " port VLAN MAC Age\n");
7487 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
7488 struct ofbundle *bundle = e->port.p;
7489 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
7490 ofbundle_get_a_port(bundle)->odp_port,
7491 e->vlan, ETH_ADDR_ARGS(e->mac),
7492 mac_entry_age(ofproto->ml, e));
7494 unixctl_command_reply(conn, ds_cstr(&ds));
7499 struct action_xlate_ctx ctx;
7505 trace_format_rule(struct ds *result, uint8_t table_id, int level,
7506 const struct rule_dpif *rule)
7508 ds_put_char_multiple(result, '\t', level);
7510 ds_put_cstr(result, "No match\n");
7514 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
7515 table_id, ntohll(rule->up.flow_cookie));
7516 cls_rule_format(&rule->up.cr, result);
7517 ds_put_char(result, '\n');
7519 ds_put_char_multiple(result, '\t', level);
7520 ds_put_cstr(result, "OpenFlow ");
7521 ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
7522 ds_put_char(result, '\n');
7526 trace_format_flow(struct ds *result, int level, const char *title,
7527 struct trace_ctx *trace)
7529 ds_put_char_multiple(result, '\t', level);
7530 ds_put_format(result, "%s: ", title);
7531 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
7532 ds_put_cstr(result, "unchanged");
7534 flow_format(result, &trace->ctx.flow);
7535 trace->flow = trace->ctx.flow;
7537 ds_put_char(result, '\n');
7541 trace_format_regs(struct ds *result, int level, const char *title,
7542 struct trace_ctx *trace)
7546 ds_put_char_multiple(result, '\t', level);
7547 ds_put_format(result, "%s:", title);
7548 for (i = 0; i < FLOW_N_REGS; i++) {
7549 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
7551 ds_put_char(result, '\n');
7555 trace_format_odp(struct ds *result, int level, const char *title,
7556 struct trace_ctx *trace)
7558 struct ofpbuf *odp_actions = trace->ctx.odp_actions;
7560 ds_put_char_multiple(result, '\t', level);
7561 ds_put_format(result, "%s: ", title);
7562 format_odp_actions(result, odp_actions->data, odp_actions->size);
7563 ds_put_char(result, '\n');
7567 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
7569 struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx);
7570 struct ds *result = trace->result;
7572 ds_put_char(result, '\n');
7573 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
7574 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
7575 trace_format_odp(result, ctx->recurse + 1, "Resubmitted odp", trace);
7576 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
7580 trace_report(struct action_xlate_ctx *ctx, const char *s)
7582 struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx);
7583 struct ds *result = trace->result;
7585 ds_put_char_multiple(result, '\t', ctx->recurse);
7586 ds_put_cstr(result, s);
7587 ds_put_char(result, '\n');
7591 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
7592 void *aux OVS_UNUSED)
7594 const char *dpname = argv[1];
7595 struct ofproto_dpif *ofproto;
7596 struct ofpbuf odp_key;
7597 struct ofpbuf *packet;
7598 ovs_be16 initial_tci;
7604 ofpbuf_init(&odp_key, 0);
7607 ofproto = ofproto_dpif_lookup(dpname);
7609 unixctl_command_reply_error(conn, "Unknown ofproto (use ofproto/list "
7613 if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) {
7614 /* ofproto/trace dpname flow [-generate] */
7615 const char *flow_s = argv[2];
7616 const char *generate_s = argv[3];
7618 /* Allow 'flow_s' to be either a datapath flow or an OpenFlow-like
7619 * flow. We guess which type it is based on whether 'flow_s' contains
7620 * an '(', since a datapath flow always contains '(') but an
7621 * OpenFlow-like flow should not (in fact it's allowed but I believe
7622 * that's not documented anywhere).
7624 * An alternative would be to try to parse 'flow_s' both ways, but then
7625 * it would be tricky giving a sensible error message. After all, do
7626 * you just say "syntax error" or do you present both error messages?
7627 * Both choices seem lousy. */
7628 if (strchr(flow_s, '(')) {
7631 /* Convert string to datapath key. */
7632 ofpbuf_init(&odp_key, 0);
7633 error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
7635 unixctl_command_reply_error(conn, "Bad flow syntax");
7639 /* XXX: Since we allow the user to specify an ofproto, it's
7640 * possible they will specify a different ofproto than the one the
7641 * port actually belongs too. Ideally we should simply remove the
7642 * ability to specify the ofproto. */
7643 if (ofproto_receive(ofproto->backer, NULL, odp_key.data,
7644 odp_key.size, &flow, NULL, NULL, NULL,
7646 unixctl_command_reply_error(conn, "Invalid flow");
7652 error_s = parse_ofp_exact_flow(&flow, argv[2]);
7654 unixctl_command_reply_error(conn, error_s);
7659 initial_tci = flow.vlan_tci;
7662 /* Generate a packet, if requested. */
7664 packet = ofpbuf_new(0);
7665 flow_compose(packet, &flow);
7667 } else if (argc == 7) {
7668 /* ofproto/trace dpname priority tun_id in_port mark packet */
7669 const char *priority_s = argv[2];
7670 const char *tun_id_s = argv[3];
7671 const char *in_port_s = argv[4];
7672 const char *mark_s = argv[5];
7673 const char *packet_s = argv[6];
7674 uint32_t in_port = atoi(in_port_s);
7675 ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
7676 uint32_t priority = atoi(priority_s);
7677 uint32_t mark = atoi(mark_s);
7680 msg = eth_from_hex(packet_s, &packet);
7682 unixctl_command_reply_error(conn, msg);
7686 ds_put_cstr(&result, "Packet: ");
7687 s = ofp_packet_to_string(packet->data, packet->size);
7688 ds_put_cstr(&result, s);
7691 flow_extract(packet, priority, mark, NULL, in_port, &flow);
7692 flow.tunnel.tun_id = tun_id;
7693 initial_tci = flow.vlan_tci;
7695 unixctl_command_reply_error(conn, "Bad command syntax");
7699 ofproto_trace(ofproto, &flow, packet, initial_tci, &result);
7700 unixctl_command_reply(conn, ds_cstr(&result));
7703 ds_destroy(&result);
7704 ofpbuf_delete(packet);
7705 ofpbuf_uninit(&odp_key);
7709 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
7710 const struct ofpbuf *packet, ovs_be16 initial_tci,
7713 struct rule_dpif *rule;
7715 ds_put_cstr(ds, "Flow: ");
7716 flow_format(ds, flow);
7717 ds_put_char(ds, '\n');
7719 rule = rule_dpif_lookup(ofproto, flow);
7721 trace_format_rule(ds, 0, 0, rule);
7722 if (rule == ofproto->miss_rule) {
7723 ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
7724 } else if (rule == ofproto->no_packet_in_rule) {
7725 ds_put_cstr(ds, "\nNo match, packets dropped because "
7726 "OFPPC_NO_PACKET_IN is set on in_port.\n");
7730 uint64_t odp_actions_stub[1024 / 8];
7731 struct ofpbuf odp_actions;
7733 struct trace_ctx trace;
7736 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
7739 ofpbuf_use_stub(&odp_actions,
7740 odp_actions_stub, sizeof odp_actions_stub);
7741 action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci,
7742 rule, tcp_flags, packet);
7743 trace.ctx.resubmit_hook = trace_resubmit;
7744 trace.ctx.report_hook = trace_report;
7745 xlate_actions(&trace.ctx, rule->up.ofpacts, rule->up.ofpacts_len,
7748 ds_put_char(ds, '\n');
7749 trace_format_flow(ds, 0, "Final flow", &trace);
7750 ds_put_cstr(ds, "Datapath actions: ");
7751 format_odp_actions(ds, odp_actions.data, odp_actions.size);
7752 ofpbuf_uninit(&odp_actions);
7754 if (trace.ctx.slow) {
7755 enum slow_path_reason slow;
7757 ds_put_cstr(ds, "\nThis flow is handled by the userspace "
7758 "slow path because it:");
7759 for (slow = trace.ctx.slow; slow; ) {
7760 enum slow_path_reason bit = rightmost_1bit(slow);
7764 ds_put_cstr(ds, "\n\t- Consists of CFM packets.");
7767 ds_put_cstr(ds, "\n\t- Consists of LACP packets.");
7770 ds_put_cstr(ds, "\n\t- Consists of STP packets.");
7773 ds_put_cstr(ds, "\n\t- Needs in-band special case "
7776 ds_put_cstr(ds, "\n\t (The datapath actions are "
7777 "incomplete--for complete actions, "
7778 "please supply a packet.)");
7781 case SLOW_CONTROLLER:
7782 ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages "
7783 "to the OpenFlow controller.");
7786 ds_put_cstr(ds, "\n\t- Needs more specific matching "
7787 "than the datapath supports.");
7794 if (slow & ~SLOW_MATCH) {
7795 ds_put_cstr(ds, "\nThe datapath actions above do not reflect "
7796 "the special slow-path processing.");
7803 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
7804 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7807 unixctl_command_reply(conn, NULL);
7811 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
7812 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7815 unixctl_command_reply(conn, NULL);
7818 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
7819 * 'reply' describing the results. */
7821 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
7823 struct facet *facet;
7827 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
7828 if (!facet_check_consistency(facet)) {
7833 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
7837 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
7838 ofproto->up.name, errors);
7840 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
7845 ofproto_dpif_self_check(struct unixctl_conn *conn,
7846 int argc, const char *argv[], void *aux OVS_UNUSED)
7848 struct ds reply = DS_EMPTY_INITIALIZER;
7849 struct ofproto_dpif *ofproto;
7852 ofproto = ofproto_dpif_lookup(argv[1]);
7854 unixctl_command_reply_error(conn, "Unknown ofproto (use "
7855 "ofproto/list for help)");
7858 ofproto_dpif_self_check__(ofproto, &reply);
7860 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
7861 ofproto_dpif_self_check__(ofproto, &reply);
7865 unixctl_command_reply(conn, ds_cstr(&reply));
7869 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
7870 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
7871 * to destroy 'ofproto_shash' and free the returned value. */
7872 static const struct shash_node **
7873 get_ofprotos(struct shash *ofproto_shash)
7875 const struct ofproto_dpif *ofproto;
7877 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
7878 char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
7879 shash_add_nocopy(ofproto_shash, name, ofproto);
7882 return shash_sort(ofproto_shash);
7886 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
7887 const char *argv[] OVS_UNUSED,
7888 void *aux OVS_UNUSED)
7890 struct ds ds = DS_EMPTY_INITIALIZER;
7891 struct shash ofproto_shash;
7892 const struct shash_node **sorted_ofprotos;
7895 shash_init(&ofproto_shash);
7896 sorted_ofprotos = get_ofprotos(&ofproto_shash);
7897 for (i = 0; i < shash_count(&ofproto_shash); i++) {
7898 const struct shash_node *node = sorted_ofprotos[i];
7899 ds_put_format(&ds, "%s\n", node->name);
7902 shash_destroy(&ofproto_shash);
7903 free(sorted_ofprotos);
7905 unixctl_command_reply(conn, ds_cstr(&ds));
7910 show_dp_format(const struct ofproto_dpif *ofproto, struct ds *ds)
7912 struct dpif_dp_stats s;
7913 const struct shash_node **ports;
7916 dpif_get_dp_stats(ofproto->backer->dpif, &s);
7918 ds_put_format(ds, "%s (%s):\n", ofproto->up.name,
7919 dpif_name(ofproto->backer->dpif));
7920 /* xxx It would be better to show bridge-specific stats instead
7921 * xxx of dp ones. */
7923 "\tlookups: hit:%"PRIu64" missed:%"PRIu64" lost:%"PRIu64"\n",
7924 s.n_hit, s.n_missed, s.n_lost);
7925 ds_put_format(ds, "\tflows: %zu\n",
7926 hmap_count(&ofproto->subfacets));
7928 ports = shash_sort(&ofproto->up.port_by_name);
7929 for (i = 0; i < shash_count(&ofproto->up.port_by_name); i++) {
7930 const struct shash_node *node = ports[i];
7931 struct ofport *ofport = node->data;
7932 const char *name = netdev_get_name(ofport->netdev);
7933 const char *type = netdev_get_type(ofport->netdev);
7936 ds_put_format(ds, "\t%s %u/", name, ofport->ofp_port);
7938 odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
7939 if (odp_port != OVSP_NONE) {
7940 ds_put_format(ds, "%"PRIu32":", odp_port);
7942 ds_put_cstr(ds, "none:");
7945 if (strcmp(type, "system")) {
7946 struct netdev *netdev;
7949 ds_put_format(ds, " (%s", type);
7951 error = netdev_open(name, type, &netdev);
7956 error = netdev_get_config(netdev, &config);
7958 const struct smap_node **nodes;
7961 nodes = smap_sort(&config);
7962 for (i = 0; i < smap_count(&config); i++) {
7963 const struct smap_node *node = nodes[i];
7964 ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
7965 node->key, node->value);
7969 smap_destroy(&config);
7971 netdev_close(netdev);
7973 ds_put_char(ds, ')');
7975 ds_put_char(ds, '\n');
7981 ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc,
7982 const char *argv[], void *aux OVS_UNUSED)
7984 struct ds ds = DS_EMPTY_INITIALIZER;
7985 const struct ofproto_dpif *ofproto;
7989 for (i = 1; i < argc; i++) {
7990 ofproto = ofproto_dpif_lookup(argv[i]);
7992 ds_put_format(&ds, "Unknown bridge %s (use dpif/dump-dps "
7993 "for help)", argv[i]);
7994 unixctl_command_reply_error(conn, ds_cstr(&ds));
7997 show_dp_format(ofproto, &ds);
8000 struct shash ofproto_shash;
8001 const struct shash_node **sorted_ofprotos;
8004 shash_init(&ofproto_shash);
8005 sorted_ofprotos = get_ofprotos(&ofproto_shash);
8006 for (i = 0; i < shash_count(&ofproto_shash); i++) {
8007 const struct shash_node *node = sorted_ofprotos[i];
8008 show_dp_format(node->data, &ds);
8011 shash_destroy(&ofproto_shash);
8012 free(sorted_ofprotos);
8015 unixctl_command_reply(conn, ds_cstr(&ds));
8020 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
8021 int argc OVS_UNUSED, const char *argv[],
8022 void *aux OVS_UNUSED)
8024 struct ds ds = DS_EMPTY_INITIALIZER;
8025 const struct ofproto_dpif *ofproto;
8026 struct subfacet *subfacet;
8028 ofproto = ofproto_dpif_lookup(argv[1]);
8030 unixctl_command_reply_error(conn, "no such bridge");
8034 update_stats(ofproto->backer);
8036 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
8037 struct odputil_keybuf keybuf;
8040 subfacet_get_key(subfacet, &keybuf, &key);
8041 odp_flow_key_format(key.data, key.size, &ds);
8043 ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
8044 subfacet->dp_packet_count, subfacet->dp_byte_count);
8045 if (subfacet->used) {
8046 ds_put_format(&ds, "%.3fs",
8047 (time_msec() - subfacet->used) / 1000.0);
8049 ds_put_format(&ds, "never");
8051 if (subfacet->facet->tcp_flags) {
8052 ds_put_cstr(&ds, ", flags:");
8053 packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
8056 ds_put_cstr(&ds, ", actions:");
8057 format_odp_actions(&ds, subfacet->actions, subfacet->actions_len);
8058 ds_put_char(&ds, '\n');
8061 unixctl_command_reply(conn, ds_cstr(&ds));
8066 ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
8067 int argc OVS_UNUSED, const char *argv[],
8068 void *aux OVS_UNUSED)
8070 struct ds ds = DS_EMPTY_INITIALIZER;
8071 struct ofproto_dpif *ofproto;
8073 ofproto = ofproto_dpif_lookup(argv[1]);
8075 unixctl_command_reply_error(conn, "no such bridge");
8079 flush(&ofproto->up);
8081 unixctl_command_reply(conn, ds_cstr(&ds));
8086 ofproto_dpif_unixctl_init(void)
8088 static bool registered;
8094 unixctl_command_register(
8096 "bridge {priority tun_id in_port mark packet | odp_flow [-generate]}",
8097 2, 6, ofproto_unixctl_trace, NULL);
8098 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
8099 ofproto_unixctl_fdb_flush, NULL);
8100 unixctl_command_register("fdb/show", "bridge", 1, 1,
8101 ofproto_unixctl_fdb_show, NULL);
8102 unixctl_command_register("ofproto/clog", "", 0, 0,
8103 ofproto_dpif_clog, NULL);
8104 unixctl_command_register("ofproto/unclog", "", 0, 0,
8105 ofproto_dpif_unclog, NULL);
8106 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
8107 ofproto_dpif_self_check, NULL);
8108 unixctl_command_register("dpif/dump-dps", "", 0, 0,
8109 ofproto_unixctl_dpif_dump_dps, NULL);
8110 unixctl_command_register("dpif/show", "[bridge]", 0, INT_MAX,
8111 ofproto_unixctl_dpif_show, NULL);
8112 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
8113 ofproto_unixctl_dpif_dump_flows, NULL);
8114 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
8115 ofproto_unixctl_dpif_del_flows, NULL);
8118 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
8120 * This is deprecated. It is only for compatibility with broken device drivers
8121 * in old versions of Linux that do not properly support VLANs when VLAN
8122 * devices are not used. When broken device drivers are no longer in
8123 * widespread use, we will delete these interfaces. */
8126 set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
8128 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
8129 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
8131 if (realdev_ofp_port == ofport->realdev_ofp_port
8132 && vid == ofport->vlandev_vid) {
8136 ofproto->backer->need_revalidate = REV_RECONFIGURE;
8138 if (ofport->realdev_ofp_port) {
8141 if (realdev_ofp_port && ofport->bundle) {
8142 /* vlandevs are enslaved to their realdevs, so they are not allowed to
8143 * themselves be part of a bundle. */
8144 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
8147 ofport->realdev_ofp_port = realdev_ofp_port;
8148 ofport->vlandev_vid = vid;
8150 if (realdev_ofp_port) {
8151 vsp_add(ofport, realdev_ofp_port, vid);
8158 hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
8160 return hash_2words(realdev_ofp_port, vid);
8163 /* Returns the ODP port number of the Linux VLAN device that corresponds to
8164 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
8165 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
8166 * it would return the port number of eth0.9.
8168 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
8169 * function just returns its 'realdev_odp_port' argument. */
8171 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
8172 uint32_t realdev_odp_port, ovs_be16 vlan_tci)
8174 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
8175 uint16_t realdev_ofp_port;
8176 int vid = vlan_tci_to_vid(vlan_tci);
8177 const struct vlan_splinter *vsp;
8179 realdev_ofp_port = odp_port_to_ofp_port(ofproto, realdev_odp_port);
8180 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
8181 hash_realdev_vid(realdev_ofp_port, vid),
8182 &ofproto->realdev_vid_map) {
8183 if (vsp->realdev_ofp_port == realdev_ofp_port
8184 && vsp->vid == vid) {
8185 return ofp_port_to_odp_port(ofproto, vsp->vlandev_ofp_port);
8189 return realdev_odp_port;
8192 static struct vlan_splinter *
8193 vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port)
8195 struct vlan_splinter *vsp;
8197 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0),
8198 &ofproto->vlandev_map) {
8199 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
8207 /* Returns the OpenFlow port number of the "real" device underlying the Linux
8208 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
8209 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
8210 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
8211 * eth0 and store 9 in '*vid'.
8213 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
8214 * VLAN device. Unless VLAN splinters are enabled, this is what this function
8217 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
8218 uint16_t vlandev_ofp_port, int *vid)
8220 if (!hmap_is_empty(&ofproto->vlandev_map)) {
8221 const struct vlan_splinter *vsp;
8223 vsp = vlandev_find(ofproto, vlandev_ofp_port);
8228 return vsp->realdev_ofp_port;
8234 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
8235 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
8236 * 'flow->in_port' to the "real" device backing the VLAN device, sets
8237 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
8238 * always the case unless VLAN splinters are enabled), returns false without
8239 * making any changes. */
8241 vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
8246 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
8251 /* Cause the flow to be processed as if it came in on the real device with
8252 * the VLAN device's VLAN ID. */
8253 flow->in_port = realdev;
8254 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
8259 vsp_remove(struct ofport_dpif *port)
8261 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
8262 struct vlan_splinter *vsp;
8264 vsp = vlandev_find(ofproto, port->up.ofp_port);
8266 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
8267 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
8270 port->realdev_ofp_port = 0;
8272 VLOG_ERR("missing vlan device record");
8277 vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
8279 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
8281 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
8282 && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid))
8283 == realdev_ofp_port)) {
8284 struct vlan_splinter *vsp;
8286 vsp = xmalloc(sizeof *vsp);
8287 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
8288 hash_int(port->up.ofp_port, 0));
8289 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
8290 hash_realdev_vid(realdev_ofp_port, vid));
8291 vsp->realdev_ofp_port = realdev_ofp_port;
8292 vsp->vlandev_ofp_port = port->up.ofp_port;
8295 port->realdev_ofp_port = realdev_ofp_port;
8297 VLOG_ERR("duplicate vlan device record");
8302 ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, uint16_t ofp_port)
8304 const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
8305 return ofport ? ofport->odp_port : OVSP_NONE;
8308 static struct ofport_dpif *
8309 odp_port_to_ofport(const struct dpif_backer *backer, uint32_t odp_port)
8311 struct ofport_dpif *port;
8313 HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node,
8314 hash_int(odp_port, 0),
8315 &backer->odp_to_ofport_map) {
8316 if (port->odp_port == odp_port) {
8325 odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
8327 struct ofport_dpif *port;
8329 port = odp_port_to_ofport(ofproto->backer, odp_port);
8330 if (port && &ofproto->up == port->up.ofproto) {
8331 return port->up.ofp_port;
8337 const struct ofproto_class ofproto_dpif_class = {
8372 port_is_lacp_current,
8373 NULL, /* rule_choose_table */
8380 rule_modify_actions,
8389 get_cfm_remote_mpids,
8394 get_stp_port_status,
8401 is_mirror_output_bundle,
8402 forward_bpdu_changed,
8403 set_mac_table_config,