2 * Copyright (c) 2009, 2010, 2011, 2012 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"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "meta-flow.h"
38 #include "multipath.h"
45 #include "ofp-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"
54 #include "unaligned.h"
56 #include "vlan-bitmap.h"
59 VLOG_DEFINE_THIS_MODULE(ofproto_dpif
);
61 COVERAGE_DEFINE(ofproto_dpif_expired
);
62 COVERAGE_DEFINE(ofproto_dpif_xlate
);
63 COVERAGE_DEFINE(facet_changed_rule
);
64 COVERAGE_DEFINE(facet_revalidate
);
65 COVERAGE_DEFINE(facet_unexpected
);
66 COVERAGE_DEFINE(facet_suppress
);
68 /* Maximum depth of flow table recursion (due to resubmit actions) in a
69 * flow translation. */
70 #define MAX_RESUBMIT_RECURSION 64
72 /* Number of implemented OpenFlow tables. */
73 enum { N_TABLES
= 255 };
74 enum { TBL_INTERNAL
= N_TABLES
- 1 }; /* Used for internal hidden rules. */
75 BUILD_ASSERT_DECL(N_TABLES
>= 2 && N_TABLES
<= 255);
86 * - Do include packets and bytes from facets that have been deleted or
87 * whose own statistics have been folded into the rule.
89 * - Do include packets and bytes sent "by hand" that were accounted to
90 * the rule without any facet being involved (this is a rare corner
91 * case in rule_execute()).
93 * - Do not include packet or bytes that can be obtained from any facet's
94 * packet_count or byte_count member or that can be obtained from the
95 * datapath by, e.g., dpif_flow_get() for any subfacet.
97 uint64_t packet_count
; /* Number of packets received. */
98 uint64_t byte_count
; /* Number of bytes received. */
100 tag_type tag
; /* Caches rule_calculate_tag() result. */
102 struct list facets
; /* List of "struct facet"s. */
105 static struct rule_dpif
*rule_dpif_cast(const struct rule
*rule
)
107 return rule
? CONTAINER_OF(rule
, struct rule_dpif
, up
) : NULL
;
110 static struct rule_dpif
*rule_dpif_lookup(struct ofproto_dpif
*,
111 const struct flow
*);
112 static struct rule_dpif
*rule_dpif_lookup__(struct ofproto_dpif
*,
115 static struct rule_dpif
*rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
,
116 const struct flow
*flow
);
118 static void rule_credit_stats(struct rule_dpif
*,
119 const struct dpif_flow_stats
*);
120 static void flow_push_stats(struct rule_dpif
*, const struct flow
*,
121 const struct dpif_flow_stats
*);
122 static tag_type
rule_calculate_tag(const struct flow
*,
123 const struct minimask
*, uint32_t basis
);
124 static void rule_invalidate(const struct rule_dpif
*);
126 #define MAX_MIRRORS 32
127 typedef uint32_t mirror_mask_t
;
128 #define MIRROR_MASK_C(X) UINT32_C(X)
129 BUILD_ASSERT_DECL(sizeof(mirror_mask_t
) * CHAR_BIT
>= MAX_MIRRORS
);
131 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
132 size_t idx
; /* In ofproto's "mirrors" array. */
133 void *aux
; /* Key supplied by ofproto's client. */
134 char *name
; /* Identifier for log messages. */
136 /* Selection criteria. */
137 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
138 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
139 unsigned long *vlans
; /* Bitmap of chosen VLANs, NULL selects all. */
141 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
142 struct ofbundle
*out
; /* Output port or NULL. */
143 int out_vlan
; /* Output VLAN or -1. */
144 mirror_mask_t dup_mirrors
; /* Bitmap of mirrors with the same output. */
147 int64_t packet_count
; /* Number of packets sent. */
148 int64_t byte_count
; /* Number of bytes sent. */
151 static void mirror_destroy(struct ofmirror
*);
152 static void update_mirror_stats(struct ofproto_dpif
*ofproto
,
153 mirror_mask_t mirrors
,
154 uint64_t packets
, uint64_t bytes
);
157 struct hmap_node hmap_node
; /* In struct ofproto's "bundles" hmap. */
158 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
159 void *aux
; /* Key supplied by ofproto's client. */
160 char *name
; /* Identifier for log messages. */
163 struct list ports
; /* Contains "struct ofport"s. */
164 enum port_vlan_mode vlan_mode
; /* VLAN mode */
165 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
166 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
167 * NULL if all VLANs are trunked. */
168 struct lacp
*lacp
; /* LACP if LACP is enabled, otherwise NULL. */
169 struct bond
*bond
; /* Nonnull iff more than one port. */
170 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
173 bool floodable
; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
175 /* Port mirroring info. */
176 mirror_mask_t src_mirrors
; /* Mirrors triggered when packet received. */
177 mirror_mask_t dst_mirrors
; /* Mirrors triggered when packet sent. */
178 mirror_mask_t mirror_out
; /* Mirrors that output to this bundle. */
181 static void bundle_remove(struct ofport
*);
182 static void bundle_update(struct ofbundle
*);
183 static void bundle_destroy(struct ofbundle
*);
184 static void bundle_del_port(struct ofport_dpif
*);
185 static void bundle_run(struct ofbundle
*);
186 static void bundle_wait(struct ofbundle
*);
187 static struct ofbundle
*lookup_input_bundle(const struct ofproto_dpif
*,
188 uint16_t in_port
, bool warn
,
189 struct ofport_dpif
**in_ofportp
);
191 /* A controller may use OFPP_NONE as the ingress port to indicate that
192 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
193 * when an input bundle is needed for validation (e.g., mirroring or
194 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
195 * any 'port' structs, so care must be taken when dealing with it. */
196 static struct ofbundle ofpp_none_bundle
= {
198 .vlan_mode
= PORT_VLAN_TRUNK
201 static void stp_run(struct ofproto_dpif
*ofproto
);
202 static void stp_wait(struct ofproto_dpif
*ofproto
);
203 static int set_stp_port(struct ofport
*,
204 const struct ofproto_port_stp_settings
*);
206 static bool ofbundle_includes_vlan(const struct ofbundle
*, uint16_t vlan
);
208 struct action_xlate_ctx
{
209 /* action_xlate_ctx_init() initializes these members. */
212 struct ofproto_dpif
*ofproto
;
214 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
215 * this flow when actions change header fields. */
218 /* The packet corresponding to 'flow', or a null pointer if we are
219 * revalidating without a packet to refer to. */
220 const struct ofpbuf
*packet
;
222 /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
223 * actions update the flow table?
225 * We want to update these tables if we are actually processing a packet,
226 * or if we are accounting for packets that the datapath has processed, but
227 * not if we are just revalidating. */
230 /* The rule that we are currently translating, or NULL. */
231 struct rule_dpif
*rule
;
233 /* Union of the set of TCP flags seen so far in this flow. (Used only by
234 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
238 /* If nonnull, flow translation calls this function just before executing a
239 * resubmit or OFPP_TABLE action. In addition, disables logging of traces
240 * when the recursion depth is exceeded.
242 * 'rule' is the rule being submitted into. It will be null if the
243 * resubmit or OFPP_TABLE action didn't find a matching rule.
245 * This is normally null so the client has to set it manually after
246 * calling action_xlate_ctx_init(). */
247 void (*resubmit_hook
)(struct action_xlate_ctx
*, struct rule_dpif
*rule
);
249 /* If nonnull, flow translation calls this function to report some
250 * significant decision, e.g. to explain why OFPP_NORMAL translation
251 * dropped a packet. */
252 void (*report_hook
)(struct action_xlate_ctx
*, const char *s
);
254 /* If nonnull, flow translation credits the specified statistics to each
255 * rule reached through a resubmit or OFPP_TABLE action.
257 * This is normally null so the client has to set it manually after
258 * calling action_xlate_ctx_init(). */
259 const struct dpif_flow_stats
*resubmit_stats
;
261 /* xlate_actions() initializes and uses these members. The client might want
262 * to look at them after it returns. */
264 struct ofpbuf
*odp_actions
; /* Datapath actions. */
265 tag_type tags
; /* Tags associated with actions. */
266 enum slow_path_reason slow
; /* 0 if fast path may be used. */
267 bool has_learn
; /* Actions include NXAST_LEARN? */
268 bool has_normal
; /* Actions output to OFPP_NORMAL? */
269 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
270 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
271 mirror_mask_t mirrors
; /* Bitmap of associated mirrors. */
273 /* xlate_actions() initializes and uses these members, but the client has no
274 * reason to look at them. */
276 int recurse
; /* Recursion level, via xlate_table_action. */
277 bool max_resubmit_trigger
; /* Recursed too deeply during translation. */
278 struct flow base_flow
; /* Flow at the last commit. */
279 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
280 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
281 uint32_t sflow_n_outputs
; /* Number of output ports. */
282 uint32_t sflow_odp_port
; /* Output port for composing sFlow action. */
283 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
284 bool exit
; /* No further actions should be processed. */
285 struct flow orig_flow
; /* Copy of original flow. */
288 static void action_xlate_ctx_init(struct action_xlate_ctx
*,
289 struct ofproto_dpif
*, const struct flow
*,
290 ovs_be16 initial_tci
, struct rule_dpif
*,
291 uint8_t tcp_flags
, const struct ofpbuf
*);
292 static void xlate_actions(struct action_xlate_ctx
*,
293 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
294 struct ofpbuf
*odp_actions
);
295 static void xlate_actions_for_side_effects(struct action_xlate_ctx
*,
296 const struct ofpact
*ofpacts
,
299 static size_t put_userspace_action(const struct ofproto_dpif
*,
300 struct ofpbuf
*odp_actions
,
302 const union user_action_cookie
*);
304 static void compose_slow_path(const struct ofproto_dpif
*, const struct flow
*,
305 enum slow_path_reason
,
306 uint64_t *stub
, size_t stub_size
,
307 const struct nlattr
**actionsp
,
308 size_t *actions_lenp
);
310 static void xlate_report(struct action_xlate_ctx
*ctx
, const char *s
);
312 /* A subfacet (see "struct subfacet" below) has three possible installation
315 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
316 * case just after the subfacet is created, just before the subfacet is
317 * destroyed, or if the datapath returns an error when we try to install a
320 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
322 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
323 * ofproto_dpif is installed in the datapath.
326 SF_NOT_INSTALLED
, /* No datapath flow for this subfacet. */
327 SF_FAST_PATH
, /* Full actions are installed. */
328 SF_SLOW_PATH
, /* Send-to-userspace action is installed. */
331 static const char *subfacet_path_to_string(enum subfacet_path
);
333 /* A dpif flow and actions associated with a facet.
335 * See also the large comment on struct facet. */
338 struct hmap_node hmap_node
; /* In struct ofproto_dpif 'subfacets' list. */
339 struct list list_node
; /* In struct facet's 'facets' list. */
340 struct facet
*facet
; /* Owning facet. */
344 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
345 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
346 * regenerate the ODP flow key from ->facet->flow. */
347 enum odp_key_fitness key_fitness
;
351 long long int used
; /* Time last used; time created if not used. */
353 uint64_t dp_packet_count
; /* Last known packet count in the datapath. */
354 uint64_t dp_byte_count
; /* Last known byte count in the datapath. */
358 * These should be essentially identical for every subfacet in a facet, but
359 * may differ in trivial ways due to VLAN splinters. */
360 size_t actions_len
; /* Number of bytes in actions[]. */
361 struct nlattr
*actions
; /* Datapath actions. */
363 enum slow_path_reason slow
; /* 0 if fast path may be used. */
364 enum subfacet_path path
; /* Installed in datapath? */
366 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
367 * splinters can cause it to differ. This value should be removed when
368 * the VLAN splinters feature is no longer needed. */
369 ovs_be16 initial_tci
; /* Initial VLAN TCI value. */
371 /* Datapath port the packet arrived on. This is needed to remove
372 * flows for ports that are no longer part of the bridge. Since the
373 * flow definition only has the OpenFlow port number and the port is
374 * no longer part of the bridge, we can't determine the datapath port
375 * number needed to delete the flow from the datapath. */
376 uint32_t odp_in_port
;
379 #define SUBFACET_DESTROY_MAX_BATCH 50
381 static struct subfacet
*subfacet_create(struct facet
*, struct flow_miss
*miss
,
383 static struct subfacet
*subfacet_find(struct ofproto_dpif
*,
384 const struct nlattr
*key
, size_t key_len
,
386 const struct flow
*flow
);
387 static void subfacet_destroy(struct subfacet
*);
388 static void subfacet_destroy__(struct subfacet
*);
389 static void subfacet_destroy_batch(struct ofproto_dpif
*,
390 struct subfacet
**, int n
);
391 static void subfacet_get_key(struct subfacet
*, struct odputil_keybuf
*,
393 static void subfacet_reset_dp_stats(struct subfacet
*,
394 struct dpif_flow_stats
*);
395 static void subfacet_update_time(struct subfacet
*, long long int used
);
396 static void subfacet_update_stats(struct subfacet
*,
397 const struct dpif_flow_stats
*);
398 static void subfacet_make_actions(struct subfacet
*,
399 const struct ofpbuf
*packet
,
400 struct ofpbuf
*odp_actions
);
401 static int subfacet_install(struct subfacet
*,
402 const struct nlattr
*actions
, size_t actions_len
,
403 struct dpif_flow_stats
*, enum slow_path_reason
);
404 static void subfacet_uninstall(struct subfacet
*);
406 static enum subfacet_path
subfacet_want_path(enum slow_path_reason
);
408 /* An exact-match instantiation of an OpenFlow flow.
410 * A facet associates a "struct flow", which represents the Open vSwitch
411 * userspace idea of an exact-match flow, with one or more subfacets. Each
412 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
413 * the facet. When the kernel module (or other dpif implementation) and Open
414 * vSwitch userspace agree on the definition of a flow key, there is exactly
415 * one subfacet per facet. If the dpif implementation supports more-specific
416 * flow matching than userspace, however, a facet can have more than one
417 * subfacet, each of which corresponds to some distinction in flow that
418 * userspace simply doesn't understand.
420 * Flow expiration works in terms of subfacets, so a facet must have at least
421 * one subfacet or it will never expire, leaking memory. */
424 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
425 struct list list_node
; /* In owning rule's 'facets' list. */
426 struct rule_dpif
*rule
; /* Owning rule. */
429 struct list subfacets
;
430 long long int used
; /* Time last used; time created if not used. */
437 * - Do include packets and bytes sent "by hand", e.g. with
440 * - Do include packets and bytes that were obtained from the datapath
441 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
442 * DPIF_FP_ZERO_STATS).
444 * - Do not include packets or bytes that can be obtained from the
445 * datapath for any existing subfacet.
447 uint64_t packet_count
; /* Number of packets received. */
448 uint64_t byte_count
; /* Number of bytes received. */
450 /* Resubmit statistics. */
451 uint64_t prev_packet_count
; /* Number of packets from last stats push. */
452 uint64_t prev_byte_count
; /* Number of bytes from last stats push. */
453 long long int prev_used
; /* Used time from last stats push. */
456 uint64_t accounted_bytes
; /* Bytes processed by facet_account(). */
457 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
458 uint8_t tcp_flags
; /* TCP flags seen for this 'rule'. */
460 /* Properties of datapath actions.
462 * Every subfacet has its own actions because actions can differ slightly
463 * between splintered and non-splintered subfacets due to the VLAN tag
464 * being initially different (present vs. absent). All of them have these
465 * properties in common so we just store one copy of them here. */
466 bool has_learn
; /* Actions include NXAST_LEARN? */
467 bool has_normal
; /* Actions output to OFPP_NORMAL? */
468 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
469 tag_type tags
; /* Tags that would require revalidation. */
470 mirror_mask_t mirrors
; /* Bitmap of dependent mirrors. */
472 /* Storage for a single subfacet, to reduce malloc() time and space
473 * overhead. (A facet always has at least one subfacet and in the common
474 * case has exactly one subfacet.) */
475 struct subfacet one_subfacet
;
478 static struct facet
*facet_create(struct rule_dpif
*,
479 const struct flow
*, uint32_t hash
);
480 static void facet_remove(struct facet
*);
481 static void facet_free(struct facet
*);
483 static struct facet
*facet_find(struct ofproto_dpif
*,
484 const struct flow
*, uint32_t hash
);
485 static struct facet
*facet_lookup_valid(struct ofproto_dpif
*,
486 const struct flow
*, uint32_t hash
);
487 static void facet_revalidate(struct facet
*);
488 static bool facet_check_consistency(struct facet
*);
490 static void facet_flush_stats(struct facet
*);
492 static void facet_update_time(struct facet
*, long long int used
);
493 static void facet_reset_counters(struct facet
*);
494 static void facet_push_stats(struct facet
*);
495 static void facet_learn(struct facet
*);
496 static void facet_account(struct facet
*);
498 static bool facet_is_controller_flow(struct facet
*);
501 struct hmap_node odp_port_node
; /* In dpif_backer's "odp_to_ofport_map". */
505 struct ofbundle
*bundle
; /* Bundle that contains this port, if any. */
506 struct list bundle_node
; /* In struct ofbundle's "ports" list. */
507 struct cfm
*cfm
; /* Connectivity Fault Management, if any. */
508 tag_type tag
; /* Tag associated with this port. */
509 uint32_t bond_stable_id
; /* stable_id to use as bond slave, or 0. */
510 bool may_enable
; /* May be enabled in bonds. */
511 long long int carrier_seq
; /* Carrier status changes. */
514 struct stp_port
*stp_port
; /* Spanning Tree Protocol, if any. */
515 enum stp_state stp_state
; /* Always STP_DISABLED if STP not in use. */
516 long long int stp_state_entered
;
518 struct hmap priorities
; /* Map of attached 'priority_to_dscp's. */
520 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
522 * This is deprecated. It is only for compatibility with broken device
523 * drivers in old versions of Linux that do not properly support VLANs when
524 * VLAN devices are not used. When broken device drivers are no longer in
525 * widespread use, we will delete these interfaces. */
526 uint16_t realdev_ofp_port
;
530 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
531 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
532 * traffic egressing the 'ofport' with that priority should be marked with. */
533 struct priority_to_dscp
{
534 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'priorities' map. */
535 uint32_t priority
; /* Priority of this queue (see struct flow). */
537 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
540 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
542 * This is deprecated. It is only for compatibility with broken device drivers
543 * in old versions of Linux that do not properly support VLANs when VLAN
544 * devices are not used. When broken device drivers are no longer in
545 * widespread use, we will delete these interfaces. */
546 struct vlan_splinter
{
547 struct hmap_node realdev_vid_node
;
548 struct hmap_node vlandev_node
;
549 uint16_t realdev_ofp_port
;
550 uint16_t vlandev_ofp_port
;
554 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif
*,
555 uint32_t realdev
, ovs_be16 vlan_tci
);
556 static bool vsp_adjust_flow(const struct ofproto_dpif
*, struct flow
*);
557 static void vsp_remove(struct ofport_dpif
*);
558 static void vsp_add(struct ofport_dpif
*, uint16_t realdev_ofp_port
, int vid
);
560 static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif
*,
562 static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif
*,
565 static struct ofport_dpif
*
566 ofport_dpif_cast(const struct ofport
*ofport
)
568 assert(ofport
->ofproto
->ofproto_class
== &ofproto_dpif_class
);
569 return ofport
? CONTAINER_OF(ofport
, struct ofport_dpif
, up
) : NULL
;
572 static void port_run(struct ofport_dpif
*);
573 static void port_run_fast(struct ofport_dpif
*);
574 static void port_wait(struct ofport_dpif
*);
575 static int set_cfm(struct ofport
*, const struct cfm_settings
*);
576 static void ofport_clear_priorities(struct ofport_dpif
*);
578 struct dpif_completion
{
579 struct list list_node
;
580 struct ofoperation
*op
;
583 /* Extra information about a classifier table.
584 * Currently used just for optimized flow revalidation. */
586 /* If either of these is nonnull, then this table has a form that allows
587 * flows to be tagged to avoid revalidating most flows for the most common
588 * kinds of flow table changes. */
589 struct cls_table
*catchall_table
; /* Table that wildcards all fields. */
590 struct cls_table
*other_table
; /* Table with any other wildcard set. */
591 uint32_t basis
; /* Keeps each table's tags separate. */
594 /* Reasons that we might need to revalidate every facet, and corresponding
597 * A value of 0 means that there is no need to revalidate.
599 * It would be nice to have some cleaner way to integrate with coverage
600 * counters, but with only a few reasons I guess this is good enough for
602 enum revalidate_reason
{
603 REV_RECONFIGURE
= 1, /* Switch configuration changed. */
604 REV_STP
, /* Spanning tree protocol port status change. */
605 REV_PORT_TOGGLED
, /* Port enabled or disabled by CFM, LACP, ...*/
606 REV_FLOW_TABLE
, /* Flow table changed. */
607 REV_INCONSISTENCY
/* Facet self-check failed. */
609 COVERAGE_DEFINE(rev_reconfigure
);
610 COVERAGE_DEFINE(rev_stp
);
611 COVERAGE_DEFINE(rev_port_toggled
);
612 COVERAGE_DEFINE(rev_flow_table
);
613 COVERAGE_DEFINE(rev_inconsistency
);
615 /* All datapaths of a given type share a single dpif backer instance. */
620 struct timer next_expiration
;
621 struct hmap odp_to_ofport_map
; /* ODP port to ofport mapping. */
624 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
625 static struct shash all_dpif_backers
= SHASH_INITIALIZER(&all_dpif_backers
);
627 static struct ofport_dpif
*
628 odp_port_to_ofport(const struct dpif_backer
*, uint32_t odp_port
);
630 struct ofproto_dpif
{
631 struct hmap_node all_ofproto_dpifs_node
; /* In 'all_ofproto_dpifs'. */
633 struct dpif_backer
*backer
;
635 /* Special OpenFlow rules. */
636 struct rule_dpif
*miss_rule
; /* Sends flow table misses to controller. */
637 struct rule_dpif
*no_packet_in_rule
; /* Drops flow table misses. */
643 struct netflow
*netflow
;
644 struct dpif_sflow
*sflow
;
645 struct hmap bundles
; /* Contains "struct ofbundle"s. */
646 struct mac_learning
*ml
;
647 struct ofmirror
*mirrors
[MAX_MIRRORS
];
649 bool has_bonded_bundles
;
653 struct hmap subfacets
;
654 struct governor
*governor
;
657 struct table_dpif tables
[N_TABLES
];
658 enum revalidate_reason need_revalidate
;
659 struct tag_set revalidate_set
;
661 /* Support for debugging async flow mods. */
662 struct list completions
;
664 bool has_bundle_action
; /* True when the first bundle action appears. */
665 struct netdev_stats stats
; /* To account packets generated and consumed in
670 long long int stp_last_tick
;
672 /* VLAN splinters. */
673 struct hmap realdev_vid_map
; /* (realdev,vid) -> vlandev. */
674 struct hmap vlandev_map
; /* vlandev -> (realdev,vid). */
677 struct sset ports
; /* Set of port names. */
678 struct sset port_poll_set
; /* Queued names for port_poll() reply. */
679 int port_poll_errno
; /* Last errno for port_poll() reply. */
682 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
683 * for debugging the asynchronous flow_mod implementation.) */
686 /* All existing ofproto_dpif instances, indexed by ->up.name. */
687 static struct hmap all_ofproto_dpifs
= HMAP_INITIALIZER(&all_ofproto_dpifs
);
689 static void ofproto_dpif_unixctl_init(void);
691 static struct ofproto_dpif
*
692 ofproto_dpif_cast(const struct ofproto
*ofproto
)
694 assert(ofproto
->ofproto_class
== &ofproto_dpif_class
);
695 return CONTAINER_OF(ofproto
, struct ofproto_dpif
, up
);
698 static struct ofport_dpif
*get_ofp_port(const struct ofproto_dpif
*,
700 static struct ofport_dpif
*get_odp_port(const struct ofproto_dpif
*,
702 static void ofproto_trace(struct ofproto_dpif
*, const struct flow
*,
703 const struct ofpbuf
*, ovs_be16 initial_tci
,
706 /* Packet processing. */
707 static void update_learning_table(struct ofproto_dpif
*,
708 const struct flow
*, int vlan
,
711 #define FLOW_MISS_MAX_BATCH 50
712 static int handle_upcalls(struct dpif_backer
*, unsigned int max_batch
);
714 /* Flow expiration. */
715 static int expire(struct dpif_backer
*);
718 static void send_netflow_active_timeouts(struct ofproto_dpif
*);
721 static int send_packet(const struct ofport_dpif
*, struct ofpbuf
*packet
);
722 static size_t compose_sflow_action(const struct ofproto_dpif
*,
723 struct ofpbuf
*odp_actions
,
724 const struct flow
*, uint32_t odp_port
);
725 static void add_mirror_actions(struct action_xlate_ctx
*ctx
,
726 const struct flow
*flow
);
727 /* Global variables. */
728 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
730 /* Initial mappings of port to bridge mappings. */
731 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
733 /* Factory functions. */
736 init(const struct shash
*iface_hints
)
738 struct shash_node
*node
;
740 /* Make a local copy, since we don't own 'iface_hints' elements. */
741 SHASH_FOR_EACH(node
, iface_hints
) {
742 const struct iface_hint
*orig_hint
= node
->data
;
743 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
745 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
746 new_hint
->br_type
= xstrdup(orig_hint
->br_type
);
747 new_hint
->ofp_port
= orig_hint
->ofp_port
;
749 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
754 enumerate_types(struct sset
*types
)
756 dp_enumerate_types(types
);
760 enumerate_names(const char *type
, struct sset
*names
)
762 struct ofproto_dpif
*ofproto
;
765 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
766 if (strcmp(type
, ofproto
->up
.type
)) {
769 sset_add(names
, ofproto
->up
.name
);
776 del(const char *type
, const char *name
)
781 error
= dpif_open(name
, type
, &dpif
);
783 error
= dpif_delete(dpif
);
790 port_open_type(const char *datapath_type
, const char *port_type
)
792 return dpif_port_open_type(datapath_type
, port_type
);
795 /* Type functions. */
798 type_run(const char *type
)
800 struct dpif_backer
*backer
;
804 backer
= shash_find_data(&all_dpif_backers
, type
);
806 /* This is not necessarily a problem, since backers are only
807 * created on demand. */
811 dpif_run(backer
->dpif
);
813 if (timer_expired(&backer
->next_expiration
)) {
814 int delay
= expire(backer
);
815 timer_set_duration(&backer
->next_expiration
, delay
);
818 /* Check for port changes in the dpif. */
819 while ((error
= dpif_port_poll(backer
->dpif
, &devname
)) == 0) {
820 struct ofproto_dpif
*ofproto
= NULL
;
821 struct dpif_port port
;
823 /* Don't report on the datapath's device. */
824 if (!strcmp(devname
, dpif_base_name(backer
->dpif
))) {
828 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
829 &all_ofproto_dpifs
) {
830 if (sset_contains(&ofproto
->ports
, devname
)) {
835 if (dpif_port_query_by_name(backer
->dpif
, devname
, &port
)) {
836 /* The port was removed. If we know the datapath,
837 * report it through poll_set(). If we don't, it may be
838 * notifying us of a removal we initiated, so ignore it.
839 * If there's a pending ENOBUFS, let it stand, since
840 * everything will be reevaluated. */
841 if (ofproto
&& ofproto
->port_poll_errno
!= ENOBUFS
) {
842 sset_add(&ofproto
->port_poll_set
, devname
);
843 ofproto
->port_poll_errno
= 0;
845 dpif_port_destroy(&port
);
846 } else if (!ofproto
) {
847 /* The port was added, but we don't know with which
848 * ofproto we should associate it. Delete it. */
849 dpif_port_del(backer
->dpif
, port
.port_no
);
855 if (error
!= EAGAIN
) {
856 struct ofproto_dpif
*ofproto
;
858 /* There was some sort of error, so propagate it to all
859 * ofprotos that use this backer. */
860 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
861 &all_ofproto_dpifs
) {
862 if (ofproto
->backer
== backer
) {
863 sset_clear(&ofproto
->port_poll_set
);
864 ofproto
->port_poll_errno
= error
;
873 type_run_fast(const char *type
)
875 struct dpif_backer
*backer
;
878 backer
= shash_find_data(&all_dpif_backers
, type
);
880 /* This is not necessarily a problem, since backers are only
881 * created on demand. */
885 /* Handle one or more batches of upcalls, until there's nothing left to do
886 * or until we do a fixed total amount of work.
888 * We do work in batches because it can be much cheaper to set up a number
889 * of flows and fire off their patches all at once. We do multiple batches
890 * because in some cases handling a packet can cause another packet to be
891 * queued almost immediately as part of the return flow. Both
892 * optimizations can make major improvements on some benchmarks and
893 * presumably for real traffic as well. */
895 while (work
< FLOW_MISS_MAX_BATCH
) {
896 int retval
= handle_upcalls(backer
, FLOW_MISS_MAX_BATCH
- work
);
907 type_wait(const char *type
)
909 struct dpif_backer
*backer
;
911 backer
= shash_find_data(&all_dpif_backers
, type
);
913 /* This is not necessarily a problem, since backers are only
914 * created on demand. */
918 timer_wait(&backer
->next_expiration
);
921 /* Basic life-cycle. */
923 static int add_internal_flows(struct ofproto_dpif
*);
925 static struct ofproto
*
928 struct ofproto_dpif
*ofproto
= xmalloc(sizeof *ofproto
);
933 dealloc(struct ofproto
*ofproto_
)
935 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
940 close_dpif_backer(struct dpif_backer
*backer
)
942 struct shash_node
*node
;
944 assert(backer
->refcount
> 0);
946 if (--backer
->refcount
) {
950 hmap_destroy(&backer
->odp_to_ofport_map
);
951 node
= shash_find(&all_dpif_backers
, backer
->type
);
953 shash_delete(&all_dpif_backers
, node
);
954 dpif_close(backer
->dpif
);
959 /* Datapath port slated for removal from datapath. */
961 struct list list_node
;
966 open_dpif_backer(const char *type
, struct dpif_backer
**backerp
)
968 struct dpif_backer
*backer
;
969 struct dpif_port_dump port_dump
;
970 struct dpif_port port
;
971 struct shash_node
*node
;
972 struct list garbage_list
;
973 struct odp_garbage
*garbage
, *next
;
979 backer
= shash_find_data(&all_dpif_backers
, type
);
986 backer_name
= xasprintf("ovs-%s", type
);
988 /* Remove any existing datapaths, since we assume we're the only
989 * userspace controlling the datapath. */
991 dp_enumerate_names(type
, &names
);
992 SSET_FOR_EACH(name
, &names
) {
993 struct dpif
*old_dpif
;
995 /* Don't remove our backer if it exists. */
996 if (!strcmp(name
, backer_name
)) {
1000 if (dpif_open(name
, type
, &old_dpif
)) {
1001 VLOG_WARN("couldn't open old datapath %s to remove it", name
);
1003 dpif_delete(old_dpif
);
1004 dpif_close(old_dpif
);
1007 sset_destroy(&names
);
1009 backer
= xmalloc(sizeof *backer
);
1011 error
= dpif_create_and_open(backer_name
, type
, &backer
->dpif
);
1014 VLOG_ERR("failed to open datapath of type %s: %s", type
,
1019 backer
->type
= xstrdup(type
);
1020 backer
->refcount
= 1;
1021 hmap_init(&backer
->odp_to_ofport_map
);
1022 timer_set_duration(&backer
->next_expiration
, 1000);
1025 dpif_flow_flush(backer
->dpif
);
1027 /* Loop through the ports already on the datapath and remove any
1028 * that we don't need anymore. */
1029 list_init(&garbage_list
);
1030 dpif_port_dump_start(&port_dump
, backer
->dpif
);
1031 while (dpif_port_dump_next(&port_dump
, &port
)) {
1032 node
= shash_find(&init_ofp_ports
, port
.name
);
1033 if (!node
&& strcmp(port
.name
, dpif_base_name(backer
->dpif
))) {
1034 garbage
= xmalloc(sizeof *garbage
);
1035 garbage
->odp_port
= port
.port_no
;
1036 list_push_front(&garbage_list
, &garbage
->list_node
);
1039 dpif_port_dump_done(&port_dump
);
1041 LIST_FOR_EACH_SAFE (garbage
, next
, list_node
, &garbage_list
) {
1042 dpif_port_del(backer
->dpif
, garbage
->odp_port
);
1043 list_remove(&garbage
->list_node
);
1047 shash_add(&all_dpif_backers
, type
, backer
);
1049 error
= dpif_recv_set(backer
->dpif
, true);
1051 VLOG_ERR("failed to listen on datapath of type %s: %s",
1052 type
, strerror(error
));
1053 close_dpif_backer(backer
);
1061 construct(struct ofproto
*ofproto_
)
1063 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1064 struct shash_node
*node
, *next
;
1069 error
= open_dpif_backer(ofproto
->up
.type
, &ofproto
->backer
);
1074 max_ports
= dpif_get_max_ports(ofproto
->backer
->dpif
);
1075 ofproto_init_max_ports(ofproto_
, MIN(max_ports
, OFPP_MAX
));
1077 ofproto
->n_matches
= 0;
1079 ofproto
->netflow
= NULL
;
1080 ofproto
->sflow
= NULL
;
1081 ofproto
->stp
= NULL
;
1082 hmap_init(&ofproto
->bundles
);
1083 ofproto
->ml
= mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME
);
1084 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1085 ofproto
->mirrors
[i
] = NULL
;
1087 ofproto
->has_bonded_bundles
= false;
1089 hmap_init(&ofproto
->facets
);
1090 hmap_init(&ofproto
->subfacets
);
1091 ofproto
->governor
= NULL
;
1093 for (i
= 0; i
< N_TABLES
; i
++) {
1094 struct table_dpif
*table
= &ofproto
->tables
[i
];
1096 table
->catchall_table
= NULL
;
1097 table
->other_table
= NULL
;
1098 table
->basis
= random_uint32();
1100 ofproto
->need_revalidate
= 0;
1101 tag_set_init(&ofproto
->revalidate_set
);
1103 list_init(&ofproto
->completions
);
1105 ofproto_dpif_unixctl_init();
1107 ofproto
->has_mirrors
= false;
1108 ofproto
->has_bundle_action
= false;
1110 hmap_init(&ofproto
->vlandev_map
);
1111 hmap_init(&ofproto
->realdev_vid_map
);
1113 sset_init(&ofproto
->ports
);
1114 sset_init(&ofproto
->port_poll_set
);
1115 ofproto
->port_poll_errno
= 0;
1117 SHASH_FOR_EACH_SAFE (node
, next
, &init_ofp_ports
) {
1118 const struct iface_hint
*iface_hint
= node
->data
;
1120 if (!strcmp(iface_hint
->br_name
, ofproto
->up
.name
)) {
1121 /* Check if the datapath already has this port. */
1122 if (dpif_port_exists(ofproto
->backer
->dpif
, node
->name
)) {
1123 sset_add(&ofproto
->ports
, node
->name
);
1126 free(iface_hint
->br_name
);
1127 free(iface_hint
->br_type
);
1128 shash_delete(&init_ofp_ports
, node
);
1132 hmap_insert(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
,
1133 hash_string(ofproto
->up
.name
, 0));
1134 memset(&ofproto
->stats
, 0, sizeof ofproto
->stats
);
1136 ofproto_init_tables(ofproto_
, N_TABLES
);
1137 error
= add_internal_flows(ofproto
);
1138 ofproto
->up
.tables
[TBL_INTERNAL
].flags
= OFTABLE_HIDDEN
| OFTABLE_READONLY
;
1144 add_internal_flow(struct ofproto_dpif
*ofproto
, int id
,
1145 const struct ofpbuf
*ofpacts
, struct rule_dpif
**rulep
)
1147 struct ofputil_flow_mod fm
;
1150 match_init_catchall(&fm
.match
);
1152 match_set_reg(&fm
.match
, 0, id
);
1153 fm
.new_cookie
= htonll(0);
1154 fm
.cookie
= htonll(0);
1155 fm
.cookie_mask
= htonll(0);
1156 fm
.table_id
= TBL_INTERNAL
;
1157 fm
.command
= OFPFC_ADD
;
1158 fm
.idle_timeout
= 0;
1159 fm
.hard_timeout
= 0;
1163 fm
.ofpacts
= ofpacts
->data
;
1164 fm
.ofpacts_len
= ofpacts
->size
;
1166 error
= ofproto_flow_mod(&ofproto
->up
, &fm
);
1168 VLOG_ERR_RL(&rl
, "failed to add internal flow %d (%s)",
1169 id
, ofperr_to_string(error
));
1173 *rulep
= rule_dpif_lookup__(ofproto
, &fm
.match
.flow
, TBL_INTERNAL
);
1174 assert(*rulep
!= NULL
);
1180 add_internal_flows(struct ofproto_dpif
*ofproto
)
1182 struct ofpact_controller
*controller
;
1183 uint64_t ofpacts_stub
[128 / 8];
1184 struct ofpbuf ofpacts
;
1188 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
1191 controller
= ofpact_put_CONTROLLER(&ofpacts
);
1192 controller
->max_len
= UINT16_MAX
;
1193 controller
->controller_id
= 0;
1194 controller
->reason
= OFPR_NO_MATCH
;
1195 ofpact_pad(&ofpacts
);
1197 error
= add_internal_flow(ofproto
, id
++, &ofpacts
, &ofproto
->miss_rule
);
1202 ofpbuf_clear(&ofpacts
);
1203 error
= add_internal_flow(ofproto
, id
++, &ofpacts
,
1204 &ofproto
->no_packet_in_rule
);
1209 complete_operations(struct ofproto_dpif
*ofproto
)
1211 struct dpif_completion
*c
, *next
;
1213 LIST_FOR_EACH_SAFE (c
, next
, list_node
, &ofproto
->completions
) {
1214 ofoperation_complete(c
->op
, 0);
1215 list_remove(&c
->list_node
);
1221 destruct(struct ofproto
*ofproto_
)
1223 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1224 struct rule_dpif
*rule
, *next_rule
;
1225 struct oftable
*table
;
1228 hmap_remove(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
);
1229 complete_operations(ofproto
);
1231 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
1232 struct cls_cursor cursor
;
1234 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1235 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
1236 ofproto_rule_destroy(&rule
->up
);
1240 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1241 mirror_destroy(ofproto
->mirrors
[i
]);
1244 netflow_destroy(ofproto
->netflow
);
1245 dpif_sflow_destroy(ofproto
->sflow
);
1246 hmap_destroy(&ofproto
->bundles
);
1247 mac_learning_destroy(ofproto
->ml
);
1249 hmap_destroy(&ofproto
->facets
);
1250 hmap_destroy(&ofproto
->subfacets
);
1251 governor_destroy(ofproto
->governor
);
1253 hmap_destroy(&ofproto
->vlandev_map
);
1254 hmap_destroy(&ofproto
->realdev_vid_map
);
1256 sset_destroy(&ofproto
->ports
);
1257 sset_destroy(&ofproto
->port_poll_set
);
1259 close_dpif_backer(ofproto
->backer
);
1263 run_fast(struct ofproto
*ofproto_
)
1265 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1266 struct ofport_dpif
*ofport
;
1268 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1269 port_run_fast(ofport
);
1276 run(struct ofproto
*ofproto_
)
1278 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1279 struct ofport_dpif
*ofport
;
1280 struct ofbundle
*bundle
;
1284 complete_operations(ofproto
);
1287 error
= run_fast(ofproto_
);
1292 if (ofproto
->netflow
) {
1293 if (netflow_run(ofproto
->netflow
)) {
1294 send_netflow_active_timeouts(ofproto
);
1297 if (ofproto
->sflow
) {
1298 dpif_sflow_run(ofproto
->sflow
);
1301 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1304 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1309 mac_learning_run(ofproto
->ml
, &ofproto
->revalidate_set
);
1311 /* Now revalidate if there's anything to do. */
1312 if (ofproto
->need_revalidate
1313 || !tag_set_is_empty(&ofproto
->revalidate_set
)) {
1314 struct tag_set revalidate_set
= ofproto
->revalidate_set
;
1315 bool revalidate_all
= ofproto
->need_revalidate
;
1316 struct facet
*facet
;
1318 switch (ofproto
->need_revalidate
) {
1319 case REV_RECONFIGURE
: COVERAGE_INC(rev_reconfigure
); break;
1320 case REV_STP
: COVERAGE_INC(rev_stp
); break;
1321 case REV_PORT_TOGGLED
: COVERAGE_INC(rev_port_toggled
); break;
1322 case REV_FLOW_TABLE
: COVERAGE_INC(rev_flow_table
); break;
1323 case REV_INCONSISTENCY
: COVERAGE_INC(rev_inconsistency
); break;
1326 /* Clear the revalidation flags. */
1327 tag_set_init(&ofproto
->revalidate_set
);
1328 ofproto
->need_revalidate
= 0;
1330 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
1332 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
1333 facet_revalidate(facet
);
1338 /* Check the consistency of a random facet, to aid debugging. */
1339 if (!hmap_is_empty(&ofproto
->facets
) && !ofproto
->need_revalidate
) {
1340 struct facet
*facet
;
1342 facet
= CONTAINER_OF(hmap_random_node(&ofproto
->facets
),
1343 struct facet
, hmap_node
);
1344 if (!tag_set_intersects(&ofproto
->revalidate_set
, facet
->tags
)) {
1345 if (!facet_check_consistency(facet
)) {
1346 ofproto
->need_revalidate
= REV_INCONSISTENCY
;
1351 if (ofproto
->governor
) {
1354 governor_run(ofproto
->governor
);
1356 /* If the governor has shrunk to its minimum size and the number of
1357 * subfacets has dwindled, then drop the governor entirely.
1359 * For hysteresis, the number of subfacets to drop the governor is
1360 * smaller than the number needed to trigger its creation. */
1361 n_subfacets
= hmap_count(&ofproto
->subfacets
);
1362 if (n_subfacets
* 4 < ofproto
->up
.flow_eviction_threshold
1363 && governor_is_idle(ofproto
->governor
)) {
1364 governor_destroy(ofproto
->governor
);
1365 ofproto
->governor
= NULL
;
1373 wait(struct ofproto
*ofproto_
)
1375 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1376 struct ofport_dpif
*ofport
;
1377 struct ofbundle
*bundle
;
1379 if (!clogged
&& !list_is_empty(&ofproto
->completions
)) {
1380 poll_immediate_wake();
1383 dpif_wait(ofproto
->backer
->dpif
);
1384 dpif_recv_wait(ofproto
->backer
->dpif
);
1385 if (ofproto
->sflow
) {
1386 dpif_sflow_wait(ofproto
->sflow
);
1388 if (!tag_set_is_empty(&ofproto
->revalidate_set
)) {
1389 poll_immediate_wake();
1391 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1394 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1395 bundle_wait(bundle
);
1397 if (ofproto
->netflow
) {
1398 netflow_wait(ofproto
->netflow
);
1400 mac_learning_wait(ofproto
->ml
);
1402 if (ofproto
->need_revalidate
) {
1403 /* Shouldn't happen, but if it does just go around again. */
1404 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1405 poll_immediate_wake();
1407 if (ofproto
->governor
) {
1408 governor_wait(ofproto
->governor
);
1413 get_memory_usage(const struct ofproto
*ofproto_
, struct simap
*usage
)
1415 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1417 simap_increase(usage
, "facets", hmap_count(&ofproto
->facets
));
1418 simap_increase(usage
, "subfacets", hmap_count(&ofproto
->subfacets
));
1422 flush(struct ofproto
*ofproto_
)
1424 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1425 struct subfacet
*subfacet
, *next_subfacet
;
1426 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
1430 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
1431 &ofproto
->subfacets
) {
1432 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
1433 batch
[n_batch
++] = subfacet
;
1434 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
1435 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
1439 subfacet_destroy(subfacet
);
1444 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
1449 get_features(struct ofproto
*ofproto_ OVS_UNUSED
,
1450 bool *arp_match_ip
, enum ofputil_action_bitmap
*actions
)
1452 *arp_match_ip
= true;
1453 *actions
= (OFPUTIL_A_OUTPUT
|
1454 OFPUTIL_A_SET_VLAN_VID
|
1455 OFPUTIL_A_SET_VLAN_PCP
|
1456 OFPUTIL_A_STRIP_VLAN
|
1457 OFPUTIL_A_SET_DL_SRC
|
1458 OFPUTIL_A_SET_DL_DST
|
1459 OFPUTIL_A_SET_NW_SRC
|
1460 OFPUTIL_A_SET_NW_DST
|
1461 OFPUTIL_A_SET_NW_TOS
|
1462 OFPUTIL_A_SET_TP_SRC
|
1463 OFPUTIL_A_SET_TP_DST
|
1468 get_tables(struct ofproto
*ofproto_
, struct ofp12_table_stats
*ots
)
1470 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1471 struct dpif_dp_stats s
;
1473 strcpy(ots
->name
, "classifier");
1475 dpif_get_dp_stats(ofproto
->backer
->dpif
, &s
);
1477 ots
->lookup_count
= htonll(s
.n_hit
+ s
.n_missed
);
1478 ots
->matched_count
= htonll(s
.n_hit
+ ofproto
->n_matches
);
1481 static struct ofport
*
1484 struct ofport_dpif
*port
= xmalloc(sizeof *port
);
1489 port_dealloc(struct ofport
*port_
)
1491 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1496 port_construct(struct ofport
*port_
)
1498 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1499 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1500 struct dpif_port dpif_port
;
1503 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1504 port
->bundle
= NULL
;
1506 port
->tag
= tag_create_random();
1507 port
->may_enable
= true;
1508 port
->stp_port
= NULL
;
1509 port
->stp_state
= STP_DISABLED
;
1510 hmap_init(&port
->priorities
);
1511 port
->realdev_ofp_port
= 0;
1512 port
->vlandev_vid
= 0;
1513 port
->carrier_seq
= netdev_get_carrier_resets(port
->up
.netdev
);
1515 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
1516 netdev_get_name(port
->up
.netdev
),
1522 port
->odp_port
= dpif_port
.port_no
;
1524 /* Sanity-check that a mapping doesn't already exist. This
1525 * shouldn't happen. */
1526 if (odp_port_to_ofp_port(ofproto
, port
->odp_port
) != OFPP_NONE
) {
1527 VLOG_ERR("port %s already has an OpenFlow port number\n",
1532 hmap_insert(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
,
1533 hash_int(port
->odp_port
, 0));
1535 if (ofproto
->sflow
) {
1536 dpif_sflow_add_port(ofproto
->sflow
, port_
, port
->odp_port
);
1543 port_destruct(struct ofport
*port_
)
1545 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1546 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1547 const char *devname
= netdev_get_name(port
->up
.netdev
);
1549 if (dpif_port_exists(ofproto
->backer
->dpif
, devname
)) {
1550 /* The underlying device is still there, so delete it. This
1551 * happens when the ofproto is being destroyed, since the caller
1552 * assumes that removal of attached ports will happen as part of
1554 dpif_port_del(ofproto
->backer
->dpif
, port
->odp_port
);
1557 sset_find_and_delete(&ofproto
->ports
, devname
);
1558 hmap_remove(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
);
1559 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1560 bundle_remove(port_
);
1561 set_cfm(port_
, NULL
);
1562 if (ofproto
->sflow
) {
1563 dpif_sflow_del_port(ofproto
->sflow
, port
->odp_port
);
1566 ofport_clear_priorities(port
);
1567 hmap_destroy(&port
->priorities
);
1571 port_modified(struct ofport
*port_
)
1573 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1575 if (port
->bundle
&& port
->bundle
->bond
) {
1576 bond_slave_set_netdev(port
->bundle
->bond
, port
, port
->up
.netdev
);
1581 port_reconfigured(struct ofport
*port_
, enum ofputil_port_config old_config
)
1583 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1584 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1585 enum ofputil_port_config changed
= old_config
^ port
->up
.pp
.config
;
1587 if (changed
& (OFPUTIL_PC_NO_RECV
| OFPUTIL_PC_NO_RECV_STP
|
1588 OFPUTIL_PC_NO_FWD
| OFPUTIL_PC_NO_FLOOD
|
1589 OFPUTIL_PC_NO_PACKET_IN
)) {
1590 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1592 if (changed
& OFPUTIL_PC_NO_FLOOD
&& port
->bundle
) {
1593 bundle_update(port
->bundle
);
1599 set_sflow(struct ofproto
*ofproto_
,
1600 const struct ofproto_sflow_options
*sflow_options
)
1602 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1603 struct dpif_sflow
*ds
= ofproto
->sflow
;
1605 if (sflow_options
) {
1607 struct ofport_dpif
*ofport
;
1609 ds
= ofproto
->sflow
= dpif_sflow_create();
1610 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1611 dpif_sflow_add_port(ds
, &ofport
->up
, ofport
->odp_port
);
1613 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1615 dpif_sflow_set_options(ds
, sflow_options
);
1618 dpif_sflow_destroy(ds
);
1619 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1620 ofproto
->sflow
= NULL
;
1627 set_cfm(struct ofport
*ofport_
, const struct cfm_settings
*s
)
1629 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1636 struct ofproto_dpif
*ofproto
;
1638 ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1639 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1640 ofport
->cfm
= cfm_create(netdev_get_name(ofport
->up
.netdev
));
1643 if (cfm_configure(ofport
->cfm
, s
)) {
1649 cfm_destroy(ofport
->cfm
);
1655 get_cfm_fault(const struct ofport
*ofport_
)
1657 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1659 return ofport
->cfm
? cfm_get_fault(ofport
->cfm
) : -1;
1663 get_cfm_opup(const struct ofport
*ofport_
)
1665 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1667 return ofport
->cfm
? cfm_get_opup(ofport
->cfm
) : -1;
1671 get_cfm_remote_mpids(const struct ofport
*ofport_
, const uint64_t **rmps
,
1674 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1677 cfm_get_remote_mpids(ofport
->cfm
, rmps
, n_rmps
);
1685 get_cfm_health(const struct ofport
*ofport_
)
1687 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1689 return ofport
->cfm
? cfm_get_health(ofport
->cfm
) : -1;
1692 /* Spanning Tree. */
1695 send_bpdu_cb(struct ofpbuf
*pkt
, int port_num
, void *ofproto_
)
1697 struct ofproto_dpif
*ofproto
= ofproto_
;
1698 struct stp_port
*sp
= stp_get_port(ofproto
->stp
, port_num
);
1699 struct ofport_dpif
*ofport
;
1701 ofport
= stp_port_get_aux(sp
);
1703 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on unknown port %d",
1704 ofproto
->up
.name
, port_num
);
1706 struct eth_header
*eth
= pkt
->l2
;
1708 netdev_get_etheraddr(ofport
->up
.netdev
, eth
->eth_src
);
1709 if (eth_addr_is_zero(eth
->eth_src
)) {
1710 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on port %d "
1711 "with unknown MAC", ofproto
->up
.name
, port_num
);
1713 send_packet(ofport
, pkt
);
1719 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1721 set_stp(struct ofproto
*ofproto_
, const struct ofproto_stp_settings
*s
)
1723 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1725 /* Only revalidate flows if the configuration changed. */
1726 if (!s
!= !ofproto
->stp
) {
1727 ofproto
->need_revalidate
= REV_RECONFIGURE
;
1731 if (!ofproto
->stp
) {
1732 ofproto
->stp
= stp_create(ofproto_
->name
, s
->system_id
,
1733 send_bpdu_cb
, ofproto
);
1734 ofproto
->stp_last_tick
= time_msec();
1737 stp_set_bridge_id(ofproto
->stp
, s
->system_id
);
1738 stp_set_bridge_priority(ofproto
->stp
, s
->priority
);
1739 stp_set_hello_time(ofproto
->stp
, s
->hello_time
);
1740 stp_set_max_age(ofproto
->stp
, s
->max_age
);
1741 stp_set_forward_delay(ofproto
->stp
, s
->fwd_delay
);
1743 struct ofport
*ofport
;
1745 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->up
.ports
) {
1746 set_stp_port(ofport
, NULL
);
1749 stp_destroy(ofproto
->stp
);
1750 ofproto
->stp
= NULL
;
1757 get_stp_status(struct ofproto
*ofproto_
, struct ofproto_stp_status
*s
)
1759 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1763 s
->bridge_id
= stp_get_bridge_id(ofproto
->stp
);
1764 s
->designated_root
= stp_get_designated_root(ofproto
->stp
);
1765 s
->root_path_cost
= stp_get_root_path_cost(ofproto
->stp
);
1774 update_stp_port_state(struct ofport_dpif
*ofport
)
1776 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1777 enum stp_state state
;
1779 /* Figure out new state. */
1780 state
= ofport
->stp_port
? stp_port_get_state(ofport
->stp_port
)
1784 if (ofport
->stp_state
!= state
) {
1785 enum ofputil_port_state of_state
;
1788 VLOG_DBG_RL(&rl
, "port %s: STP state changed from %s to %s",
1789 netdev_get_name(ofport
->up
.netdev
),
1790 stp_state_name(ofport
->stp_state
),
1791 stp_state_name(state
));
1792 if (stp_learn_in_state(ofport
->stp_state
)
1793 != stp_learn_in_state(state
)) {
1794 /* xxx Learning action flows should also be flushed. */
1795 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
1797 fwd_change
= stp_forward_in_state(ofport
->stp_state
)
1798 != stp_forward_in_state(state
);
1800 ofproto
->need_revalidate
= REV_STP
;
1801 ofport
->stp_state
= state
;
1802 ofport
->stp_state_entered
= time_msec();
1804 if (fwd_change
&& ofport
->bundle
) {
1805 bundle_update(ofport
->bundle
);
1808 /* Update the STP state bits in the OpenFlow port description. */
1809 of_state
= ofport
->up
.pp
.state
& ~OFPUTIL_PS_STP_MASK
;
1810 of_state
|= (state
== STP_LISTENING
? OFPUTIL_PS_STP_LISTEN
1811 : state
== STP_LEARNING
? OFPUTIL_PS_STP_LEARN
1812 : state
== STP_FORWARDING
? OFPUTIL_PS_STP_FORWARD
1813 : state
== STP_BLOCKING
? OFPUTIL_PS_STP_BLOCK
1815 ofproto_port_set_state(&ofport
->up
, of_state
);
1819 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1820 * caller is responsible for assigning STP port numbers and ensuring
1821 * there are no duplicates. */
1823 set_stp_port(struct ofport
*ofport_
,
1824 const struct ofproto_port_stp_settings
*s
)
1826 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1827 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1828 struct stp_port
*sp
= ofport
->stp_port
;
1830 if (!s
|| !s
->enable
) {
1832 ofport
->stp_port
= NULL
;
1833 stp_port_disable(sp
);
1834 update_stp_port_state(ofport
);
1837 } else if (sp
&& stp_port_no(sp
) != s
->port_num
1838 && ofport
== stp_port_get_aux(sp
)) {
1839 /* The port-id changed, so disable the old one if it's not
1840 * already in use by another port. */
1841 stp_port_disable(sp
);
1844 sp
= ofport
->stp_port
= stp_get_port(ofproto
->stp
, s
->port_num
);
1845 stp_port_enable(sp
);
1847 stp_port_set_aux(sp
, ofport
);
1848 stp_port_set_priority(sp
, s
->priority
);
1849 stp_port_set_path_cost(sp
, s
->path_cost
);
1851 update_stp_port_state(ofport
);
1857 get_stp_port_status(struct ofport
*ofport_
,
1858 struct ofproto_port_stp_status
*s
)
1860 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1861 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1862 struct stp_port
*sp
= ofport
->stp_port
;
1864 if (!ofproto
->stp
|| !sp
) {
1870 s
->port_id
= stp_port_get_id(sp
);
1871 s
->state
= stp_port_get_state(sp
);
1872 s
->sec_in_state
= (time_msec() - ofport
->stp_state_entered
) / 1000;
1873 s
->role
= stp_port_get_role(sp
);
1874 stp_port_get_counts(sp
, &s
->tx_count
, &s
->rx_count
, &s
->error_count
);
1880 stp_run(struct ofproto_dpif
*ofproto
)
1883 long long int now
= time_msec();
1884 long long int elapsed
= now
- ofproto
->stp_last_tick
;
1885 struct stp_port
*sp
;
1888 stp_tick(ofproto
->stp
, MIN(INT_MAX
, elapsed
));
1889 ofproto
->stp_last_tick
= now
;
1891 while (stp_get_changed_port(ofproto
->stp
, &sp
)) {
1892 struct ofport_dpif
*ofport
= stp_port_get_aux(sp
);
1895 update_stp_port_state(ofport
);
1899 if (stp_check_and_reset_fdb_flush(ofproto
->stp
)) {
1900 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
1906 stp_wait(struct ofproto_dpif
*ofproto
)
1909 poll_timer_wait(1000);
1913 /* Returns true if STP should process 'flow'. */
1915 stp_should_process_flow(const struct flow
*flow
)
1917 return eth_addr_equals(flow
->dl_dst
, eth_addr_stp
);
1921 stp_process_packet(const struct ofport_dpif
*ofport
,
1922 const struct ofpbuf
*packet
)
1924 struct ofpbuf payload
= *packet
;
1925 struct eth_header
*eth
= payload
.data
;
1926 struct stp_port
*sp
= ofport
->stp_port
;
1928 /* Sink packets on ports that have STP disabled when the bridge has
1930 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
1934 /* Trim off padding on payload. */
1935 if (payload
.size
> ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1936 payload
.size
= ntohs(eth
->eth_type
) + ETH_HEADER_LEN
;
1939 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1940 stp_received_bpdu(sp
, payload
.data
, payload
.size
);
1944 static struct priority_to_dscp
*
1945 get_priority(const struct ofport_dpif
*ofport
, uint32_t priority
)
1947 struct priority_to_dscp
*pdscp
;
1950 hash
= hash_int(priority
, 0);
1951 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &ofport
->priorities
) {
1952 if (pdscp
->priority
== priority
) {
1960 ofport_clear_priorities(struct ofport_dpif
*ofport
)
1962 struct priority_to_dscp
*pdscp
, *next
;
1964 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &ofport
->priorities
) {
1965 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
1971 set_queues(struct ofport
*ofport_
,
1972 const struct ofproto_port_queue
*qdscp_list
,
1975 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1976 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1977 struct hmap
new = HMAP_INITIALIZER(&new);
1980 for (i
= 0; i
< n_qdscp
; i
++) {
1981 struct priority_to_dscp
*pdscp
;
1985 dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
1986 if (dpif_queue_to_priority(ofproto
->backer
->dpif
, qdscp_list
[i
].queue
,
1991 pdscp
= get_priority(ofport
, priority
);
1993 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
1995 pdscp
= xmalloc(sizeof *pdscp
);
1996 pdscp
->priority
= priority
;
1998 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2001 if (pdscp
->dscp
!= dscp
) {
2003 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2006 hmap_insert(&new, &pdscp
->hmap_node
, hash_int(pdscp
->priority
, 0));
2009 if (!hmap_is_empty(&ofport
->priorities
)) {
2010 ofport_clear_priorities(ofport
);
2011 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2014 hmap_swap(&new, &ofport
->priorities
);
2022 /* Expires all MAC learning entries associated with 'bundle' and forces its
2023 * ofproto to revalidate every flow.
2025 * Normally MAC learning entries are removed only from the ofproto associated
2026 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2027 * are removed from every ofproto. When patch ports and SLB bonds are in use
2028 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2029 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2030 * with the host from which it migrated. */
2032 bundle_flush_macs(struct ofbundle
*bundle
, bool all_ofprotos
)
2034 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2035 struct mac_learning
*ml
= ofproto
->ml
;
2036 struct mac_entry
*mac
, *next_mac
;
2038 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2039 LIST_FOR_EACH_SAFE (mac
, next_mac
, lru_node
, &ml
->lrus
) {
2040 if (mac
->port
.p
== bundle
) {
2042 struct ofproto_dpif
*o
;
2044 HMAP_FOR_EACH (o
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
2046 struct mac_entry
*e
;
2048 e
= mac_learning_lookup(o
->ml
, mac
->mac
, mac
->vlan
,
2051 tag_set_add(&o
->revalidate_set
, e
->tag
);
2052 mac_learning_expire(o
->ml
, e
);
2058 mac_learning_expire(ml
, mac
);
2063 static struct ofbundle
*
2064 bundle_lookup(const struct ofproto_dpif
*ofproto
, void *aux
)
2066 struct ofbundle
*bundle
;
2068 HMAP_FOR_EACH_IN_BUCKET (bundle
, hmap_node
, hash_pointer(aux
, 0),
2069 &ofproto
->bundles
) {
2070 if (bundle
->aux
== aux
) {
2077 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
2078 * ones that are found to 'bundles'. */
2080 bundle_lookup_multiple(struct ofproto_dpif
*ofproto
,
2081 void **auxes
, size_t n_auxes
,
2082 struct hmapx
*bundles
)
2086 hmapx_init(bundles
);
2087 for (i
= 0; i
< n_auxes
; i
++) {
2088 struct ofbundle
*bundle
= bundle_lookup(ofproto
, auxes
[i
]);
2090 hmapx_add(bundles
, bundle
);
2096 bundle_update(struct ofbundle
*bundle
)
2098 struct ofport_dpif
*port
;
2100 bundle
->floodable
= true;
2101 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2102 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2103 || !stp_forward_in_state(port
->stp_state
)) {
2104 bundle
->floodable
= false;
2111 bundle_del_port(struct ofport_dpif
*port
)
2113 struct ofbundle
*bundle
= port
->bundle
;
2115 bundle
->ofproto
->need_revalidate
= REV_RECONFIGURE
;
2117 list_remove(&port
->bundle_node
);
2118 port
->bundle
= NULL
;
2121 lacp_slave_unregister(bundle
->lacp
, port
);
2124 bond_slave_unregister(bundle
->bond
, port
);
2127 bundle_update(bundle
);
2131 bundle_add_port(struct ofbundle
*bundle
, uint32_t ofp_port
,
2132 struct lacp_slave_settings
*lacp
,
2133 uint32_t bond_stable_id
)
2135 struct ofport_dpif
*port
;
2137 port
= get_ofp_port(bundle
->ofproto
, ofp_port
);
2142 if (port
->bundle
!= bundle
) {
2143 bundle
->ofproto
->need_revalidate
= REV_RECONFIGURE
;
2145 bundle_del_port(port
);
2148 port
->bundle
= bundle
;
2149 list_push_back(&bundle
->ports
, &port
->bundle_node
);
2150 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2151 || !stp_forward_in_state(port
->stp_state
)) {
2152 bundle
->floodable
= false;
2156 port
->bundle
->ofproto
->need_revalidate
= REV_RECONFIGURE
;
2157 lacp_slave_register(bundle
->lacp
, port
, lacp
);
2160 port
->bond_stable_id
= bond_stable_id
;
2166 bundle_destroy(struct ofbundle
*bundle
)
2168 struct ofproto_dpif
*ofproto
;
2169 struct ofport_dpif
*port
, *next_port
;
2176 ofproto
= bundle
->ofproto
;
2177 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2178 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2180 if (m
->out
== bundle
) {
2182 } else if (hmapx_find_and_delete(&m
->srcs
, bundle
)
2183 || hmapx_find_and_delete(&m
->dsts
, bundle
)) {
2184 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2189 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2190 bundle_del_port(port
);
2193 bundle_flush_macs(bundle
, true);
2194 hmap_remove(&ofproto
->bundles
, &bundle
->hmap_node
);
2196 free(bundle
->trunks
);
2197 lacp_destroy(bundle
->lacp
);
2198 bond_destroy(bundle
->bond
);
2203 bundle_set(struct ofproto
*ofproto_
, void *aux
,
2204 const struct ofproto_bundle_settings
*s
)
2206 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2207 bool need_flush
= false;
2208 struct ofport_dpif
*port
;
2209 struct ofbundle
*bundle
;
2210 unsigned long *trunks
;
2216 bundle_destroy(bundle_lookup(ofproto
, aux
));
2220 assert(s
->n_slaves
== 1 || s
->bond
!= NULL
);
2221 assert((s
->lacp
!= NULL
) == (s
->lacp_slaves
!= NULL
));
2223 bundle
= bundle_lookup(ofproto
, aux
);
2225 bundle
= xmalloc(sizeof *bundle
);
2227 bundle
->ofproto
= ofproto
;
2228 hmap_insert(&ofproto
->bundles
, &bundle
->hmap_node
,
2229 hash_pointer(aux
, 0));
2231 bundle
->name
= NULL
;
2233 list_init(&bundle
->ports
);
2234 bundle
->vlan_mode
= PORT_VLAN_TRUNK
;
2236 bundle
->trunks
= NULL
;
2237 bundle
->use_priority_tags
= s
->use_priority_tags
;
2238 bundle
->lacp
= NULL
;
2239 bundle
->bond
= NULL
;
2241 bundle
->floodable
= true;
2243 bundle
->src_mirrors
= 0;
2244 bundle
->dst_mirrors
= 0;
2245 bundle
->mirror_out
= 0;
2248 if (!bundle
->name
|| strcmp(s
->name
, bundle
->name
)) {
2250 bundle
->name
= xstrdup(s
->name
);
2255 if (!bundle
->lacp
) {
2256 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2257 bundle
->lacp
= lacp_create();
2259 lacp_configure(bundle
->lacp
, s
->lacp
);
2261 lacp_destroy(bundle
->lacp
);
2262 bundle
->lacp
= NULL
;
2265 /* Update set of ports. */
2267 for (i
= 0; i
< s
->n_slaves
; i
++) {
2268 if (!bundle_add_port(bundle
, s
->slaves
[i
],
2269 s
->lacp
? &s
->lacp_slaves
[i
] : NULL
,
2270 s
->bond_stable_ids
? s
->bond_stable_ids
[i
] : 0)) {
2274 if (!ok
|| list_size(&bundle
->ports
) != s
->n_slaves
) {
2275 struct ofport_dpif
*next_port
;
2277 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2278 for (i
= 0; i
< s
->n_slaves
; i
++) {
2279 if (s
->slaves
[i
] == port
->up
.ofp_port
) {
2284 bundle_del_port(port
);
2288 assert(list_size(&bundle
->ports
) <= s
->n_slaves
);
2290 if (list_is_empty(&bundle
->ports
)) {
2291 bundle_destroy(bundle
);
2295 /* Set VLAN tagging mode */
2296 if (s
->vlan_mode
!= bundle
->vlan_mode
2297 || s
->use_priority_tags
!= bundle
->use_priority_tags
) {
2298 bundle
->vlan_mode
= s
->vlan_mode
;
2299 bundle
->use_priority_tags
= s
->use_priority_tags
;
2304 vlan
= (s
->vlan_mode
== PORT_VLAN_TRUNK
? -1
2305 : s
->vlan
>= 0 && s
->vlan
<= 4095 ? s
->vlan
2307 if (vlan
!= bundle
->vlan
) {
2308 bundle
->vlan
= vlan
;
2312 /* Get trunked VLANs. */
2313 switch (s
->vlan_mode
) {
2314 case PORT_VLAN_ACCESS
:
2318 case PORT_VLAN_TRUNK
:
2319 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2322 case PORT_VLAN_NATIVE_UNTAGGED
:
2323 case PORT_VLAN_NATIVE_TAGGED
:
2324 if (vlan
!= 0 && (!s
->trunks
2325 || !bitmap_is_set(s
->trunks
, vlan
)
2326 || bitmap_is_set(s
->trunks
, 0))) {
2327 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2329 trunks
= bitmap_clone(s
->trunks
, 4096);
2331 trunks
= bitmap_allocate1(4096);
2333 bitmap_set1(trunks
, vlan
);
2334 bitmap_set0(trunks
, 0);
2336 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2343 if (!vlan_bitmap_equal(trunks
, bundle
->trunks
)) {
2344 free(bundle
->trunks
);
2345 if (trunks
== s
->trunks
) {
2346 bundle
->trunks
= vlan_bitmap_clone(trunks
);
2348 bundle
->trunks
= trunks
;
2353 if (trunks
!= s
->trunks
) {
2358 if (!list_is_short(&bundle
->ports
)) {
2359 bundle
->ofproto
->has_bonded_bundles
= true;
2361 if (bond_reconfigure(bundle
->bond
, s
->bond
)) {
2362 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2365 bundle
->bond
= bond_create(s
->bond
);
2366 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2369 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2370 bond_slave_register(bundle
->bond
, port
, port
->bond_stable_id
,
2374 bond_destroy(bundle
->bond
);
2375 bundle
->bond
= NULL
;
2378 /* If we changed something that would affect MAC learning, un-learn
2379 * everything on this port and force flow revalidation. */
2381 bundle_flush_macs(bundle
, false);
2388 bundle_remove(struct ofport
*port_
)
2390 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
2391 struct ofbundle
*bundle
= port
->bundle
;
2394 bundle_del_port(port
);
2395 if (list_is_empty(&bundle
->ports
)) {
2396 bundle_destroy(bundle
);
2397 } else if (list_is_short(&bundle
->ports
)) {
2398 bond_destroy(bundle
->bond
);
2399 bundle
->bond
= NULL
;
2405 send_pdu_cb(void *port_
, const void *pdu
, size_t pdu_size
)
2407 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 10);
2408 struct ofport_dpif
*port
= port_
;
2409 uint8_t ea
[ETH_ADDR_LEN
];
2412 error
= netdev_get_etheraddr(port
->up
.netdev
, ea
);
2414 struct ofpbuf packet
;
2417 ofpbuf_init(&packet
, 0);
2418 packet_pdu
= eth_compose(&packet
, eth_addr_lacp
, ea
, ETH_TYPE_LACP
,
2420 memcpy(packet_pdu
, pdu
, pdu_size
);
2422 send_packet(port
, &packet
);
2423 ofpbuf_uninit(&packet
);
2425 VLOG_ERR_RL(&rl
, "port %s: cannot obtain Ethernet address of iface "
2426 "%s (%s)", port
->bundle
->name
,
2427 netdev_get_name(port
->up
.netdev
), strerror(error
));
2432 bundle_send_learning_packets(struct ofbundle
*bundle
)
2434 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2435 int error
, n_packets
, n_errors
;
2436 struct mac_entry
*e
;
2438 error
= n_packets
= n_errors
= 0;
2439 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
2440 if (e
->port
.p
!= bundle
) {
2441 struct ofpbuf
*learning_packet
;
2442 struct ofport_dpif
*port
;
2446 /* The assignment to "port" is unnecessary but makes "grep"ing for
2447 * struct ofport_dpif more effective. */
2448 learning_packet
= bond_compose_learning_packet(bundle
->bond
,
2452 ret
= send_packet(port
, learning_packet
);
2453 ofpbuf_delete(learning_packet
);
2463 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2464 VLOG_WARN_RL(&rl
, "bond %s: %d errors sending %d gratuitous learning "
2465 "packets, last error was: %s",
2466 bundle
->name
, n_errors
, n_packets
, strerror(error
));
2468 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2469 bundle
->name
, n_packets
);
2474 bundle_run(struct ofbundle
*bundle
)
2477 lacp_run(bundle
->lacp
, send_pdu_cb
);
2480 struct ofport_dpif
*port
;
2482 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2483 bond_slave_set_may_enable(bundle
->bond
, port
, port
->may_enable
);
2486 bond_run(bundle
->bond
, &bundle
->ofproto
->revalidate_set
,
2487 lacp_status(bundle
->lacp
));
2488 if (bond_should_send_learning_packets(bundle
->bond
)) {
2489 bundle_send_learning_packets(bundle
);
2495 bundle_wait(struct ofbundle
*bundle
)
2498 lacp_wait(bundle
->lacp
);
2501 bond_wait(bundle
->bond
);
2508 mirror_scan(struct ofproto_dpif
*ofproto
)
2512 for (idx
= 0; idx
< MAX_MIRRORS
; idx
++) {
2513 if (!ofproto
->mirrors
[idx
]) {
2520 static struct ofmirror
*
2521 mirror_lookup(struct ofproto_dpif
*ofproto
, void *aux
)
2525 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2526 struct ofmirror
*mirror
= ofproto
->mirrors
[i
];
2527 if (mirror
&& mirror
->aux
== aux
) {
2535 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
2537 mirror_update_dups(struct ofproto_dpif
*ofproto
)
2541 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2542 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2545 m
->dup_mirrors
= MIRROR_MASK_C(1) << i
;
2549 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2550 struct ofmirror
*m1
= ofproto
->mirrors
[i
];
2557 for (j
= i
+ 1; j
< MAX_MIRRORS
; j
++) {
2558 struct ofmirror
*m2
= ofproto
->mirrors
[j
];
2560 if (m2
&& m1
->out
== m2
->out
&& m1
->out_vlan
== m2
->out_vlan
) {
2561 m1
->dup_mirrors
|= MIRROR_MASK_C(1) << j
;
2562 m2
->dup_mirrors
|= m1
->dup_mirrors
;
2569 mirror_set(struct ofproto
*ofproto_
, void *aux
,
2570 const struct ofproto_mirror_settings
*s
)
2572 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2573 mirror_mask_t mirror_bit
;
2574 struct ofbundle
*bundle
;
2575 struct ofmirror
*mirror
;
2576 struct ofbundle
*out
;
2577 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
2578 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
2581 mirror
= mirror_lookup(ofproto
, aux
);
2583 mirror_destroy(mirror
);
2589 idx
= mirror_scan(ofproto
);
2591 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2593 ofproto
->up
.name
, MAX_MIRRORS
, s
->name
);
2597 mirror
= ofproto
->mirrors
[idx
] = xzalloc(sizeof *mirror
);
2598 mirror
->ofproto
= ofproto
;
2601 mirror
->out_vlan
= -1;
2602 mirror
->name
= NULL
;
2605 if (!mirror
->name
|| strcmp(s
->name
, mirror
->name
)) {
2607 mirror
->name
= xstrdup(s
->name
);
2610 /* Get the new configuration. */
2611 if (s
->out_bundle
) {
2612 out
= bundle_lookup(ofproto
, s
->out_bundle
);
2614 mirror_destroy(mirror
);
2620 out_vlan
= s
->out_vlan
;
2622 bundle_lookup_multiple(ofproto
, s
->srcs
, s
->n_srcs
, &srcs
);
2623 bundle_lookup_multiple(ofproto
, s
->dsts
, s
->n_dsts
, &dsts
);
2625 /* If the configuration has not changed, do nothing. */
2626 if (hmapx_equals(&srcs
, &mirror
->srcs
)
2627 && hmapx_equals(&dsts
, &mirror
->dsts
)
2628 && vlan_bitmap_equal(mirror
->vlans
, s
->src_vlans
)
2629 && mirror
->out
== out
2630 && mirror
->out_vlan
== out_vlan
)
2632 hmapx_destroy(&srcs
);
2633 hmapx_destroy(&dsts
);
2637 hmapx_swap(&srcs
, &mirror
->srcs
);
2638 hmapx_destroy(&srcs
);
2640 hmapx_swap(&dsts
, &mirror
->dsts
);
2641 hmapx_destroy(&dsts
);
2643 free(mirror
->vlans
);
2644 mirror
->vlans
= vlan_bitmap_clone(s
->src_vlans
);
2647 mirror
->out_vlan
= out_vlan
;
2649 /* Update bundles. */
2650 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2651 HMAP_FOR_EACH (bundle
, hmap_node
, &mirror
->ofproto
->bundles
) {
2652 if (hmapx_contains(&mirror
->srcs
, bundle
)) {
2653 bundle
->src_mirrors
|= mirror_bit
;
2655 bundle
->src_mirrors
&= ~mirror_bit
;
2658 if (hmapx_contains(&mirror
->dsts
, bundle
)) {
2659 bundle
->dst_mirrors
|= mirror_bit
;
2661 bundle
->dst_mirrors
&= ~mirror_bit
;
2664 if (mirror
->out
== bundle
) {
2665 bundle
->mirror_out
|= mirror_bit
;
2667 bundle
->mirror_out
&= ~mirror_bit
;
2671 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2672 ofproto
->has_mirrors
= true;
2673 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2674 mirror_update_dups(ofproto
);
2680 mirror_destroy(struct ofmirror
*mirror
)
2682 struct ofproto_dpif
*ofproto
;
2683 mirror_mask_t mirror_bit
;
2684 struct ofbundle
*bundle
;
2691 ofproto
= mirror
->ofproto
;
2692 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2693 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2695 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2696 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
2697 bundle
->src_mirrors
&= ~mirror_bit
;
2698 bundle
->dst_mirrors
&= ~mirror_bit
;
2699 bundle
->mirror_out
&= ~mirror_bit
;
2702 hmapx_destroy(&mirror
->srcs
);
2703 hmapx_destroy(&mirror
->dsts
);
2704 free(mirror
->vlans
);
2706 ofproto
->mirrors
[mirror
->idx
] = NULL
;
2710 mirror_update_dups(ofproto
);
2712 ofproto
->has_mirrors
= false;
2713 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2714 if (ofproto
->mirrors
[i
]) {
2715 ofproto
->has_mirrors
= true;
2722 mirror_get_stats(struct ofproto
*ofproto_
, void *aux
,
2723 uint64_t *packets
, uint64_t *bytes
)
2725 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2726 struct ofmirror
*mirror
= mirror_lookup(ofproto
, aux
);
2729 *packets
= *bytes
= UINT64_MAX
;
2733 *packets
= mirror
->packet_count
;
2734 *bytes
= mirror
->byte_count
;
2740 set_flood_vlans(struct ofproto
*ofproto_
, unsigned long *flood_vlans
)
2742 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2743 if (mac_learning_set_flood_vlans(ofproto
->ml
, flood_vlans
)) {
2744 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2750 is_mirror_output_bundle(const struct ofproto
*ofproto_
, void *aux
)
2752 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2753 struct ofbundle
*bundle
= bundle_lookup(ofproto
, aux
);
2754 return bundle
&& bundle
->mirror_out
!= 0;
2758 forward_bpdu_changed(struct ofproto
*ofproto_
)
2760 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2761 ofproto
->need_revalidate
= REV_RECONFIGURE
;
2765 set_mac_idle_time(struct ofproto
*ofproto_
, unsigned int idle_time
)
2767 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2768 mac_learning_set_idle_time(ofproto
->ml
, idle_time
);
2773 static struct ofport_dpif
*
2774 get_ofp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
2776 struct ofport
*ofport
= ofproto_get_port(&ofproto
->up
, ofp_port
);
2777 return ofport
? ofport_dpif_cast(ofport
) : NULL
;
2780 static struct ofport_dpif
*
2781 get_odp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
2783 return get_ofp_port(ofproto
, odp_port_to_ofp_port(ofproto
, odp_port
));
2787 ofproto_port_from_dpif_port(struct ofproto_dpif
*ofproto
,
2788 struct ofproto_port
*ofproto_port
,
2789 struct dpif_port
*dpif_port
)
2791 ofproto_port
->name
= dpif_port
->name
;
2792 ofproto_port
->type
= dpif_port
->type
;
2793 ofproto_port
->ofp_port
= odp_port_to_ofp_port(ofproto
, dpif_port
->port_no
);
2797 port_run_fast(struct ofport_dpif
*ofport
)
2799 if (ofport
->cfm
&& cfm_should_send_ccm(ofport
->cfm
)) {
2800 struct ofpbuf packet
;
2802 ofpbuf_init(&packet
, 0);
2803 cfm_compose_ccm(ofport
->cfm
, &packet
, ofport
->up
.pp
.hw_addr
);
2804 send_packet(ofport
, &packet
);
2805 ofpbuf_uninit(&packet
);
2810 port_run(struct ofport_dpif
*ofport
)
2812 long long int carrier_seq
= netdev_get_carrier_resets(ofport
->up
.netdev
);
2813 bool carrier_changed
= carrier_seq
!= ofport
->carrier_seq
;
2814 bool enable
= netdev_get_carrier(ofport
->up
.netdev
);
2816 ofport
->carrier_seq
= carrier_seq
;
2818 port_run_fast(ofport
);
2820 int cfm_opup
= cfm_get_opup(ofport
->cfm
);
2822 cfm_run(ofport
->cfm
);
2823 enable
= enable
&& !cfm_get_fault(ofport
->cfm
);
2825 if (cfm_opup
>= 0) {
2826 enable
= enable
&& cfm_opup
;
2830 if (ofport
->bundle
) {
2831 enable
= enable
&& lacp_slave_may_enable(ofport
->bundle
->lacp
, ofport
);
2832 if (carrier_changed
) {
2833 lacp_slave_carrier_changed(ofport
->bundle
->lacp
, ofport
);
2837 if (ofport
->may_enable
!= enable
) {
2838 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2840 if (ofproto
->has_bundle_action
) {
2841 ofproto
->need_revalidate
= REV_PORT_TOGGLED
;
2845 ofport
->may_enable
= enable
;
2849 port_wait(struct ofport_dpif
*ofport
)
2852 cfm_wait(ofport
->cfm
);
2857 port_query_by_name(const struct ofproto
*ofproto_
, const char *devname
,
2858 struct ofproto_port
*ofproto_port
)
2860 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2861 struct dpif_port dpif_port
;
2864 if (!sset_contains(&ofproto
->ports
, devname
)) {
2867 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
2868 devname
, &dpif_port
);
2870 ofproto_port_from_dpif_port(ofproto
, ofproto_port
, &dpif_port
);
2876 port_add(struct ofproto
*ofproto_
, struct netdev
*netdev
)
2878 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2879 uint32_t odp_port
= UINT32_MAX
;
2882 error
= dpif_port_add(ofproto
->backer
->dpif
, netdev
, &odp_port
);
2884 sset_add(&ofproto
->ports
, netdev_get_name(netdev
));
2890 port_del(struct ofproto
*ofproto_
, uint16_t ofp_port
)
2892 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2893 uint32_t odp_port
= ofp_port_to_odp_port(ofproto
, ofp_port
);
2896 if (odp_port
!= OFPP_NONE
) {
2897 error
= dpif_port_del(ofproto
->backer
->dpif
, odp_port
);
2900 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
2902 /* The caller is going to close ofport->up.netdev. If this is a
2903 * bonded port, then the bond is using that netdev, so remove it
2904 * from the bond. The client will need to reconfigure everything
2905 * after deleting ports, so then the slave will get re-added. */
2906 bundle_remove(&ofport
->up
);
2913 port_get_stats(const struct ofport
*ofport_
, struct netdev_stats
*stats
)
2915 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2918 error
= netdev_get_stats(ofport
->up
.netdev
, stats
);
2920 if (!error
&& ofport
->odp_port
== OVSP_LOCAL
) {
2921 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2923 /* ofproto->stats.tx_packets represents packets that we created
2924 * internally and sent to some port (e.g. packets sent with
2925 * send_packet()). Account for them as if they had come from
2926 * OFPP_LOCAL and got forwarded. */
2928 if (stats
->rx_packets
!= UINT64_MAX
) {
2929 stats
->rx_packets
+= ofproto
->stats
.tx_packets
;
2932 if (stats
->rx_bytes
!= UINT64_MAX
) {
2933 stats
->rx_bytes
+= ofproto
->stats
.tx_bytes
;
2936 /* ofproto->stats.rx_packets represents packets that were received on
2937 * some port and we processed internally and dropped (e.g. STP).
2938 * Account for them as if they had been forwarded to OFPP_LOCAL. */
2940 if (stats
->tx_packets
!= UINT64_MAX
) {
2941 stats
->tx_packets
+= ofproto
->stats
.rx_packets
;
2944 if (stats
->tx_bytes
!= UINT64_MAX
) {
2945 stats
->tx_bytes
+= ofproto
->stats
.rx_bytes
;
2952 /* Account packets for LOCAL port. */
2954 ofproto_update_local_port_stats(const struct ofproto
*ofproto_
,
2955 size_t tx_size
, size_t rx_size
)
2957 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2960 ofproto
->stats
.rx_packets
++;
2961 ofproto
->stats
.rx_bytes
+= rx_size
;
2964 ofproto
->stats
.tx_packets
++;
2965 ofproto
->stats
.tx_bytes
+= tx_size
;
2969 struct port_dump_state
{
2975 port_dump_start(const struct ofproto
*ofproto_ OVS_UNUSED
, void **statep
)
2977 struct port_dump_state
*state
;
2979 *statep
= state
= xmalloc(sizeof *state
);
2986 port_dump_next(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
,
2987 struct ofproto_port
*port
)
2989 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2990 struct port_dump_state
*state
= state_
;
2991 struct sset_node
*node
;
2993 while ((node
= sset_at_position(&ofproto
->ports
, &state
->bucket
,
2997 error
= port_query_by_name(ofproto_
, node
->name
, port
);
2998 if (error
!= ENODEV
) {
3007 port_dump_done(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
)
3009 struct port_dump_state
*state
= state_
;
3016 port_poll(const struct ofproto
*ofproto_
, char **devnamep
)
3018 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3020 if (ofproto
->port_poll_errno
) {
3021 int error
= ofproto
->port_poll_errno
;
3022 ofproto
->port_poll_errno
= 0;
3026 if (sset_is_empty(&ofproto
->port_poll_set
)) {
3030 *devnamep
= sset_pop(&ofproto
->port_poll_set
);
3035 port_poll_wait(const struct ofproto
*ofproto_
)
3037 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3038 dpif_port_poll_wait(ofproto
->backer
->dpif
);
3042 port_is_lacp_current(const struct ofport
*ofport_
)
3044 const struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
3045 return (ofport
->bundle
&& ofport
->bundle
->lacp
3046 ? lacp_slave_is_current(ofport
->bundle
->lacp
, ofport
)
3050 /* Upcall handling. */
3052 /* Flow miss batching.
3054 * Some dpifs implement operations faster when you hand them off in a batch.
3055 * To allow batching, "struct flow_miss" queues the dpif-related work needed
3056 * for a given flow. Each "struct flow_miss" corresponds to sending one or
3057 * more packets, plus possibly installing the flow in the dpif.
3059 * So far we only batch the operations that affect flow setup time the most.
3060 * It's possible to batch more than that, but the benefit might be minimal. */
3062 struct hmap_node hmap_node
;
3063 struct ofproto_dpif
*ofproto
;
3065 enum odp_key_fitness key_fitness
;
3066 const struct nlattr
*key
;
3068 ovs_be16 initial_tci
;
3069 struct list packets
;
3070 enum dpif_upcall_type upcall_type
;
3071 uint32_t odp_in_port
;
3074 struct flow_miss_op
{
3075 struct dpif_op dpif_op
;
3076 struct subfacet
*subfacet
; /* Subfacet */
3077 void *garbage
; /* Pointer to pass to free(), NULL if none. */
3078 uint64_t stub
[1024 / 8]; /* Temporary buffer. */
3081 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
3082 * OpenFlow controller as necessary according to their individual
3083 * configurations. */
3085 send_packet_in_miss(struct ofproto_dpif
*ofproto
, const struct ofpbuf
*packet
,
3086 const struct flow
*flow
)
3088 struct ofputil_packet_in pin
;
3090 pin
.packet
= packet
->data
;
3091 pin
.packet_len
= packet
->size
;
3092 pin
.reason
= OFPR_NO_MATCH
;
3093 pin
.controller_id
= 0;
3098 pin
.send_len
= 0; /* not used for flow table misses */
3100 flow_get_metadata(flow
, &pin
.fmd
);
3102 connmgr_send_packet_in(ofproto
->up
.connmgr
, &pin
);
3105 static enum slow_path_reason
3106 process_special(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
3107 const struct ofpbuf
*packet
)
3109 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, flow
->in_port
);
3115 if (ofport
->cfm
&& cfm_should_process_flow(ofport
->cfm
, flow
)) {
3117 cfm_process_heartbeat(ofport
->cfm
, packet
);
3120 } else if (ofport
->bundle
&& ofport
->bundle
->lacp
3121 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
3123 lacp_process_packet(ofport
->bundle
->lacp
, ofport
, packet
);
3126 } else if (ofproto
->stp
&& stp_should_process_flow(flow
)) {
3128 stp_process_packet(ofport
, packet
);
3135 static struct flow_miss
*
3136 flow_miss_find(struct hmap
*todo
, const struct flow
*flow
, uint32_t hash
)
3138 struct flow_miss
*miss
;
3140 HMAP_FOR_EACH_WITH_HASH (miss
, hmap_node
, hash
, todo
) {
3141 if (flow_equal(&miss
->flow
, flow
)) {
3149 /* Partially Initializes 'op' as an "execute" operation for 'miss' and
3150 * 'packet'. The caller must initialize op->actions and op->actions_len. If
3151 * 'miss' is associated with a subfacet the caller must also initialize the
3152 * returned op->subfacet, and if anything needs to be freed after processing
3153 * the op, the caller must initialize op->garbage also. */
3155 init_flow_miss_execute_op(struct flow_miss
*miss
, struct ofpbuf
*packet
,
3156 struct flow_miss_op
*op
)
3158 if (miss
->flow
.vlan_tci
!= miss
->initial_tci
) {
3159 /* This packet was received on a VLAN splinter port. We
3160 * added a VLAN to the packet to make the packet resemble
3161 * the flow, but the actions were composed assuming that
3162 * the packet contained no VLAN. So, we must remove the
3163 * VLAN header from the packet before trying to execute the
3165 eth_pop_vlan(packet
);
3168 op
->subfacet
= NULL
;
3170 op
->dpif_op
.type
= DPIF_OP_EXECUTE
;
3171 op
->dpif_op
.u
.execute
.key
= miss
->key
;
3172 op
->dpif_op
.u
.execute
.key_len
= miss
->key_len
;
3173 op
->dpif_op
.u
.execute
.packet
= packet
;
3176 /* Helper for handle_flow_miss_without_facet() and
3177 * handle_flow_miss_with_facet(). */
3179 handle_flow_miss_common(struct rule_dpif
*rule
,
3180 struct ofpbuf
*packet
, const struct flow
*flow
)
3182 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3184 ofproto
->n_matches
++;
3186 if (rule
->up
.cr
.priority
== FAIL_OPEN_PRIORITY
) {
3188 * Extra-special case for fail-open mode.
3190 * We are in fail-open mode and the packet matched the fail-open
3191 * rule, but we are connected to a controller too. We should send
3192 * the packet up to the controller in the hope that it will try to
3193 * set up a flow and thereby allow us to exit fail-open.
3195 * See the top-level comment in fail-open.c for more information.
3197 send_packet_in_miss(ofproto
, packet
, flow
);
3201 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3202 * 'miss', is likely to be worth tracking in detail in userspace and (usually)
3203 * installing a datapath flow. The answer is usually "yes" (a return value of
3204 * true). However, for short flows the cost of bookkeeping is much higher than
3205 * the benefits, so when the datapath holds a large number of flows we impose
3206 * some heuristics to decide which flows are likely to be worth tracking. */
3208 flow_miss_should_make_facet(struct ofproto_dpif
*ofproto
,
3209 struct flow_miss
*miss
, uint32_t hash
)
3211 if (!ofproto
->governor
) {
3214 n_subfacets
= hmap_count(&ofproto
->subfacets
);
3215 if (n_subfacets
* 2 <= ofproto
->up
.flow_eviction_threshold
) {
3219 ofproto
->governor
= governor_create(ofproto
->up
.name
);
3222 return governor_should_install_flow(ofproto
->governor
, hash
,
3223 list_size(&miss
->packets
));
3226 /* Handles 'miss', which matches 'rule', without creating a facet or subfacet
3227 * or creating any datapath flow. May add an "execute" operation to 'ops' and
3228 * increment '*n_ops'. */
3230 handle_flow_miss_without_facet(struct flow_miss
*miss
,
3231 struct rule_dpif
*rule
,
3232 struct flow_miss_op
*ops
, size_t *n_ops
)
3234 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3235 long long int now
= time_msec();
3236 struct action_xlate_ctx ctx
;
3237 struct ofpbuf
*packet
;
3239 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3240 struct flow_miss_op
*op
= &ops
[*n_ops
];
3241 struct dpif_flow_stats stats
;
3242 struct ofpbuf odp_actions
;
3244 COVERAGE_INC(facet_suppress
);
3246 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
3248 dpif_flow_stats_extract(&miss
->flow
, packet
, now
, &stats
);
3249 rule_credit_stats(rule
, &stats
);
3251 action_xlate_ctx_init(&ctx
, ofproto
, &miss
->flow
, miss
->initial_tci
,
3253 ctx
.resubmit_stats
= &stats
;
3254 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
3257 if (odp_actions
.size
) {
3258 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3260 init_flow_miss_execute_op(miss
, packet
, op
);
3261 execute
->actions
= odp_actions
.data
;
3262 execute
->actions_len
= odp_actions
.size
;
3263 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
3267 ofpbuf_uninit(&odp_actions
);
3272 /* Handles 'miss', which matches 'facet'. May add any required datapath
3273 * operations to 'ops', incrementing '*n_ops' for each new op.
3275 * All of the packets in 'miss' are considered to have arrived at time 'now'.
3276 * This is really important only for new facets: if we just called time_msec()
3277 * here, then the new subfacet or its packets could look (occasionally) as
3278 * though it was used some time after the facet was used. That can make a
3279 * one-packet flow look like it has a nonzero duration, which looks odd in
3280 * e.g. NetFlow statistics. */
3282 handle_flow_miss_with_facet(struct flow_miss
*miss
, struct facet
*facet
,
3284 struct flow_miss_op
*ops
, size_t *n_ops
)
3286 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3287 enum subfacet_path want_path
;
3288 struct subfacet
*subfacet
;
3289 struct ofpbuf
*packet
;
3291 subfacet
= subfacet_create(facet
, miss
, now
);
3293 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3294 struct flow_miss_op
*op
= &ops
[*n_ops
];
3295 struct dpif_flow_stats stats
;
3296 struct ofpbuf odp_actions
;
3298 handle_flow_miss_common(facet
->rule
, packet
, &miss
->flow
);
3300 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
3301 if (!subfacet
->actions
|| subfacet
->slow
) {
3302 subfacet_make_actions(subfacet
, packet
, &odp_actions
);
3305 dpif_flow_stats_extract(&facet
->flow
, packet
, now
, &stats
);
3306 subfacet_update_stats(subfacet
, &stats
);
3308 if (subfacet
->actions_len
) {
3309 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3311 init_flow_miss_execute_op(miss
, packet
, op
);
3312 op
->subfacet
= subfacet
;
3313 if (!subfacet
->slow
) {
3314 execute
->actions
= subfacet
->actions
;
3315 execute
->actions_len
= subfacet
->actions_len
;
3316 ofpbuf_uninit(&odp_actions
);
3318 execute
->actions
= odp_actions
.data
;
3319 execute
->actions_len
= odp_actions
.size
;
3320 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
3325 ofpbuf_uninit(&odp_actions
);
3329 want_path
= subfacet_want_path(subfacet
->slow
);
3330 if (miss
->upcall_type
== DPIF_UC_MISS
|| subfacet
->path
!= want_path
) {
3331 struct flow_miss_op
*op
= &ops
[(*n_ops
)++];
3332 struct dpif_flow_put
*put
= &op
->dpif_op
.u
.flow_put
;
3334 op
->subfacet
= subfacet
;
3336 op
->dpif_op
.type
= DPIF_OP_FLOW_PUT
;
3337 put
->flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
3338 put
->key
= miss
->key
;
3339 put
->key_len
= miss
->key_len
;
3340 if (want_path
== SF_FAST_PATH
) {
3341 put
->actions
= subfacet
->actions
;
3342 put
->actions_len
= subfacet
->actions_len
;
3344 compose_slow_path(ofproto
, &facet
->flow
, subfacet
->slow
,
3345 op
->stub
, sizeof op
->stub
,
3346 &put
->actions
, &put
->actions_len
);
3352 /* Handles flow miss 'miss'. May add any required datapath operations
3353 * to 'ops', incrementing '*n_ops' for each new op. */
3355 handle_flow_miss(struct flow_miss
*miss
, struct flow_miss_op
*ops
,
3358 struct ofproto_dpif
*ofproto
= miss
->ofproto
;
3359 struct facet
*facet
;
3363 /* The caller must ensure that miss->hmap_node.hash contains
3364 * flow_hash(miss->flow, 0). */
3365 hash
= miss
->hmap_node
.hash
;
3367 facet
= facet_lookup_valid(ofproto
, &miss
->flow
, hash
);
3369 struct rule_dpif
*rule
= rule_dpif_lookup(ofproto
, &miss
->flow
);
3371 if (!flow_miss_should_make_facet(ofproto
, miss
, hash
)) {
3372 handle_flow_miss_without_facet(miss
, rule
, ops
, n_ops
);
3376 facet
= facet_create(rule
, &miss
->flow
, hash
);
3381 handle_flow_miss_with_facet(miss
, facet
, now
, ops
, n_ops
);
3384 /* This function does post-processing on data returned from
3385 * odp_flow_key_to_flow() to help make VLAN splinters transparent to the
3386 * rest of the upcall processing logic. In particular, if the extracted
3387 * in_port is a VLAN splinter port, it replaces flow->in_port by the "real"
3388 * port, sets flow->vlan_tci correctly for the VLAN of the VLAN splinter
3389 * port, and pushes a VLAN header onto 'packet' (if it is nonnull). The
3390 * caller must have called odp_flow_key_to_flow() and supply 'fitness' and
3391 * 'flow' from its output. The 'flow' argument must have had the "in_port"
3392 * member converted to the OpenFlow number.
3394 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
3395 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
3396 * (This differs from the value returned in flow->vlan_tci only for packets
3397 * received on VLAN splinters.) */
3398 static enum odp_key_fitness
3399 ofproto_dpif_vsp_adjust(const struct ofproto_dpif
*ofproto
,
3400 enum odp_key_fitness fitness
,
3401 struct flow
*flow
, ovs_be16
*initial_tci
,
3402 struct ofpbuf
*packet
)
3404 if (fitness
== ODP_FIT_ERROR
) {
3407 *initial_tci
= flow
->vlan_tci
;
3409 if (vsp_adjust_flow(ofproto
, flow
)) {
3411 /* Make the packet resemble the flow, so that it gets sent to an
3412 * OpenFlow controller properly, so that it looks correct for
3413 * sFlow, and so that flow_extract() will get the correct vlan_tci
3414 * if it is called on 'packet'.
3416 * The allocated space inside 'packet' probably also contains
3417 * 'key', that is, both 'packet' and 'key' are probably part of a
3418 * struct dpif_upcall (see the large comment on that structure
3419 * definition), so pushing data on 'packet' is in general not a
3420 * good idea since it could overwrite 'key' or free it as a side
3421 * effect. However, it's OK in this special case because we know
3422 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
3423 * will just overwrite the 4-byte "struct nlattr", which is fine
3424 * since we don't need that header anymore. */
3425 eth_push_vlan(packet
, flow
->vlan_tci
);
3428 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
3429 if (fitness
== ODP_FIT_PERFECT
) {
3430 fitness
= ODP_FIT_TOO_MUCH
;
3438 handle_miss_upcalls(struct dpif_backer
*backer
, struct dpif_upcall
*upcalls
,
3441 struct dpif_upcall
*upcall
;
3442 struct flow_miss
*miss
;
3443 struct flow_miss misses
[FLOW_MISS_MAX_BATCH
];
3444 struct flow_miss_op flow_miss_ops
[FLOW_MISS_MAX_BATCH
* 2];
3445 struct dpif_op
*dpif_ops
[FLOW_MISS_MAX_BATCH
* 2];
3455 /* Construct the to-do list.
3457 * This just amounts to extracting the flow from each packet and sticking
3458 * the packets that have the same flow in the same "flow_miss" structure so
3459 * that we can process them together. */
3462 for (upcall
= upcalls
; upcall
< &upcalls
[n_upcalls
]; upcall
++) {
3463 struct flow_miss
*miss
= &misses
[n_misses
];
3464 struct flow_miss
*existing_miss
;
3465 enum odp_key_fitness fitness
;
3466 struct ofproto_dpif
*ofproto
;
3467 struct ofport_dpif
*port
;
3468 uint32_t odp_in_port
;
3472 fitness
= odp_flow_key_to_flow(upcall
->key
, upcall
->key_len
, &flow
);
3473 port
= odp_port_to_ofport(backer
, flow
.in_port
);
3475 /* Received packet on port for which we couldn't associate
3476 * an ofproto. This can happen if a port is removed while
3477 * traffic is being received. Print a rate-limited message
3478 * in case it happens frequently. */
3479 VLOG_INFO_RL(&rl
, "received packet on unassociated port %"PRIu32
,
3483 ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
3484 odp_in_port
= flow
.in_port
;
3485 flow
.in_port
= port
->up
.ofp_port
;
3487 /* Obtain metadata and check userspace/kernel agreement on flow match,
3488 * then set 'flow''s header pointers. */
3489 miss
->key_fitness
= ofproto_dpif_vsp_adjust(ofproto
, fitness
,
3490 &flow
, &miss
->initial_tci
, upcall
->packet
);
3491 if (miss
->key_fitness
== ODP_FIT_ERROR
) {
3494 flow_extract(upcall
->packet
, flow
.skb_priority
, flow
.skb_mark
,
3495 &flow
.tunnel
, flow
.in_port
, &miss
->flow
);
3497 /* Add other packets to a to-do list. */
3498 hash
= flow_hash(&miss
->flow
, 0);
3499 existing_miss
= flow_miss_find(&todo
, &miss
->flow
, hash
);
3500 if (!existing_miss
) {
3501 hmap_insert(&todo
, &miss
->hmap_node
, hash
);
3502 miss
->ofproto
= ofproto
;
3503 miss
->key
= upcall
->key
;
3504 miss
->key_len
= upcall
->key_len
;
3505 miss
->upcall_type
= upcall
->type
;
3506 miss
->odp_in_port
= odp_in_port
;
3507 list_init(&miss
->packets
);
3511 miss
= existing_miss
;
3513 list_push_back(&miss
->packets
, &upcall
->packet
->list_node
);
3516 /* Process each element in the to-do list, constructing the set of
3517 * operations to batch. */
3519 HMAP_FOR_EACH (miss
, hmap_node
, &todo
) {
3520 handle_flow_miss(miss
, flow_miss_ops
, &n_ops
);
3522 assert(n_ops
<= ARRAY_SIZE(flow_miss_ops
));
3524 /* Execute batch. */
3525 for (i
= 0; i
< n_ops
; i
++) {
3526 dpif_ops
[i
] = &flow_miss_ops
[i
].dpif_op
;
3528 dpif_operate(backer
->dpif
, dpif_ops
, n_ops
);
3530 /* Free memory and update facets. */
3531 for (i
= 0; i
< n_ops
; i
++) {
3532 struct flow_miss_op
*op
= &flow_miss_ops
[i
];
3534 switch (op
->dpif_op
.type
) {
3535 case DPIF_OP_EXECUTE
:
3538 case DPIF_OP_FLOW_PUT
:
3539 if (!op
->dpif_op
.error
) {
3540 op
->subfacet
->path
= subfacet_want_path(op
->subfacet
->slow
);
3544 case DPIF_OP_FLOW_DEL
:
3550 hmap_destroy(&todo
);
3553 static enum { SFLOW_UPCALL
, MISS_UPCALL
, BAD_UPCALL
}
3554 classify_upcall(const struct dpif_upcall
*upcall
)
3556 union user_action_cookie cookie
;
3558 /* First look at the upcall type. */
3559 switch (upcall
->type
) {
3560 case DPIF_UC_ACTION
:
3566 case DPIF_N_UC_TYPES
:
3568 VLOG_WARN_RL(&rl
, "upcall has unexpected type %"PRIu32
, upcall
->type
);
3572 /* "action" upcalls need a closer look. */
3573 memcpy(&cookie
, &upcall
->userdata
, sizeof(cookie
));
3574 switch (cookie
.type
) {
3575 case USER_ACTION_COOKIE_SFLOW
:
3576 return SFLOW_UPCALL
;
3578 case USER_ACTION_COOKIE_SLOW_PATH
:
3581 case USER_ACTION_COOKIE_UNSPEC
:
3583 VLOG_WARN_RL(&rl
, "invalid user cookie : 0x%"PRIx64
, upcall
->userdata
);
3589 handle_sflow_upcall(struct dpif_backer
*backer
,
3590 const struct dpif_upcall
*upcall
)
3592 struct ofproto_dpif
*ofproto
;
3593 union user_action_cookie cookie
;
3594 enum odp_key_fitness fitness
;
3595 struct ofport_dpif
*port
;
3596 ovs_be16 initial_tci
;
3598 uint32_t odp_in_port
;
3600 fitness
= odp_flow_key_to_flow(upcall
->key
, upcall
->key_len
, &flow
);
3602 port
= odp_port_to_ofport(backer
, flow
.in_port
);
3607 ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
3608 if (!ofproto
->sflow
) {
3612 odp_in_port
= flow
.in_port
;
3613 flow
.in_port
= port
->up
.ofp_port
;
3614 fitness
= ofproto_dpif_vsp_adjust(ofproto
, fitness
, &flow
,
3615 &initial_tci
, upcall
->packet
);
3616 if (fitness
== ODP_FIT_ERROR
) {
3620 memcpy(&cookie
, &upcall
->userdata
, sizeof(cookie
));
3621 dpif_sflow_received(ofproto
->sflow
, upcall
->packet
, &flow
,
3622 odp_in_port
, &cookie
);
3626 handle_upcalls(struct dpif_backer
*backer
, unsigned int max_batch
)
3628 struct dpif_upcall misses
[FLOW_MISS_MAX_BATCH
];
3629 struct ofpbuf miss_bufs
[FLOW_MISS_MAX_BATCH
];
3630 uint64_t miss_buf_stubs
[FLOW_MISS_MAX_BATCH
][4096 / 8];
3635 assert(max_batch
<= FLOW_MISS_MAX_BATCH
);
3638 for (n_processed
= 0; n_processed
< max_batch
; n_processed
++) {
3639 struct dpif_upcall
*upcall
= &misses
[n_misses
];
3640 struct ofpbuf
*buf
= &miss_bufs
[n_misses
];
3643 ofpbuf_use_stub(buf
, miss_buf_stubs
[n_misses
],
3644 sizeof miss_buf_stubs
[n_misses
]);
3645 error
= dpif_recv(backer
->dpif
, upcall
, buf
);
3651 switch (classify_upcall(upcall
)) {
3653 /* Handle it later. */
3658 handle_sflow_upcall(backer
, upcall
);
3668 /* Handle deferred MISS_UPCALL processing. */
3669 handle_miss_upcalls(backer
, misses
, n_misses
);
3670 for (i
= 0; i
< n_misses
; i
++) {
3671 ofpbuf_uninit(&miss_bufs
[i
]);
3677 /* Flow expiration. */
3679 static int subfacet_max_idle(const struct ofproto_dpif
*);
3680 static void update_stats(struct dpif_backer
*);
3681 static void rule_expire(struct rule_dpif
*);
3682 static void expire_subfacets(struct ofproto_dpif
*, int dp_max_idle
);
3684 /* This function is called periodically by run(). Its job is to collect
3685 * updates for the flows that have been installed into the datapath, most
3686 * importantly when they last were used, and then use that information to
3687 * expire flows that have not been used recently.
3689 * Returns the number of milliseconds after which it should be called again. */
3691 expire(struct dpif_backer
*backer
)
3693 struct ofproto_dpif
*ofproto
;
3694 int max_idle
= INT32_MAX
;
3696 /* Update stats for each flow in the backer. */
3697 update_stats(backer
);
3699 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
3700 struct rule_dpif
*rule
, *next_rule
;
3701 struct oftable
*table
;
3704 if (ofproto
->backer
!= backer
) {
3708 /* Expire subfacets that have been idle too long. */
3709 dp_max_idle
= subfacet_max_idle(ofproto
);
3710 expire_subfacets(ofproto
, dp_max_idle
);
3712 max_idle
= MIN(max_idle
, dp_max_idle
);
3714 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
3716 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
3717 struct cls_cursor cursor
;
3719 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
3720 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
3725 /* All outstanding data in existing flows has been accounted, so it's a
3726 * good time to do bond rebalancing. */
3727 if (ofproto
->has_bonded_bundles
) {
3728 struct ofbundle
*bundle
;
3730 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
3732 bond_rebalance(bundle
->bond
, &ofproto
->revalidate_set
);
3738 return MIN(max_idle
, 1000);
3741 /* Updates flow table statistics given that the datapath just reported 'stats'
3742 * as 'subfacet''s statistics. */
3744 update_subfacet_stats(struct subfacet
*subfacet
,
3745 const struct dpif_flow_stats
*stats
)
3747 struct facet
*facet
= subfacet
->facet
;
3749 if (stats
->n_packets
>= subfacet
->dp_packet_count
) {
3750 uint64_t extra
= stats
->n_packets
- subfacet
->dp_packet_count
;
3751 facet
->packet_count
+= extra
;
3753 VLOG_WARN_RL(&rl
, "unexpected packet count from the datapath");
3756 if (stats
->n_bytes
>= subfacet
->dp_byte_count
) {
3757 facet
->byte_count
+= stats
->n_bytes
- subfacet
->dp_byte_count
;
3759 VLOG_WARN_RL(&rl
, "unexpected byte count from datapath");
3762 subfacet
->dp_packet_count
= stats
->n_packets
;
3763 subfacet
->dp_byte_count
= stats
->n_bytes
;
3765 facet
->tcp_flags
|= stats
->tcp_flags
;
3767 subfacet_update_time(subfacet
, stats
->used
);
3768 if (facet
->accounted_bytes
< facet
->byte_count
) {
3770 facet_account(facet
);
3771 facet
->accounted_bytes
= facet
->byte_count
;
3773 facet_push_stats(facet
);
3776 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
3777 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
3779 delete_unexpected_flow(struct ofproto_dpif
*ofproto
,
3780 const struct nlattr
*key
, size_t key_len
)
3782 if (!VLOG_DROP_WARN(&rl
)) {
3786 odp_flow_key_format(key
, key_len
, &s
);
3787 VLOG_WARN("unexpected flow on %s: %s", ofproto
->up
.name
, ds_cstr(&s
));
3791 COVERAGE_INC(facet_unexpected
);
3792 dpif_flow_del(ofproto
->backer
->dpif
, key
, key_len
, NULL
);
3795 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3797 * This function also pushes statistics updates to rules which each facet
3798 * resubmits into. Generally these statistics will be accurate. However, if a
3799 * facet changes the rule it resubmits into at some time in between
3800 * update_stats() runs, it is possible that statistics accrued to the
3801 * old rule will be incorrectly attributed to the new rule. This could be
3802 * avoided by calling update_stats() whenever rules are created or
3803 * deleted. However, the performance impact of making so many calls to the
3804 * datapath do not justify the benefit of having perfectly accurate statistics.
3807 update_stats(struct dpif_backer
*backer
)
3809 const struct dpif_flow_stats
*stats
;
3810 struct dpif_flow_dump dump
;
3811 const struct nlattr
*key
;
3814 dpif_flow_dump_start(&dump
, backer
->dpif
);
3815 while (dpif_flow_dump_next(&dump
, &key
, &key_len
, NULL
, NULL
, &stats
)) {
3817 struct subfacet
*subfacet
;
3818 enum odp_key_fitness fitness
;
3819 struct ofproto_dpif
*ofproto
;
3820 struct ofport_dpif
*port
;
3823 fitness
= odp_flow_key_to_flow(key
, key_len
, &flow
);
3824 if (fitness
== ODP_FIT_ERROR
) {
3828 port
= odp_port_to_ofport(backer
, flow
.in_port
);
3830 /* This flow is for a port for which we couldn't associate an
3831 * ofproto. This can happen if a port is removed while
3832 * traffic is being received. Ignore this flow, since it
3833 * will get timed out. */
3837 ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
3838 flow
.in_port
= port
->up
.ofp_port
;
3839 key_hash
= odp_flow_key_hash(key
, key_len
);
3841 subfacet
= subfacet_find(ofproto
, key
, key_len
, key_hash
, &flow
);
3842 switch (subfacet
? subfacet
->path
: SF_NOT_INSTALLED
) {
3844 update_subfacet_stats(subfacet
, stats
);
3848 /* Stats are updated per-packet. */
3851 case SF_NOT_INSTALLED
:
3853 delete_unexpected_flow(ofproto
, key
, key_len
);
3857 dpif_flow_dump_done(&dump
);
3860 /* Calculates and returns the number of milliseconds of idle time after which
3861 * subfacets should expire from the datapath. When a subfacet expires, we fold
3862 * its statistics into its facet, and when a facet's last subfacet expires, we
3863 * fold its statistic into its rule. */
3865 subfacet_max_idle(const struct ofproto_dpif
*ofproto
)
3868 * Idle time histogram.
3870 * Most of the time a switch has a relatively small number of subfacets.
3871 * When this is the case we might as well keep statistics for all of them
3872 * in userspace and to cache them in the kernel datapath for performance as
3875 * As the number of subfacets increases, the memory required to maintain
3876 * statistics about them in userspace and in the kernel becomes
3877 * significant. However, with a large number of subfacets it is likely
3878 * that only a few of them are "heavy hitters" that consume a large amount
3879 * of bandwidth. At this point, only heavy hitters are worth caching in
3880 * the kernel and maintaining in userspaces; other subfacets we can
3883 * The technique used to compute the idle time is to build a histogram with
3884 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3885 * that is installed in the kernel gets dropped in the appropriate bucket.
3886 * After the histogram has been built, we compute the cutoff so that only
3887 * the most-recently-used 1% of subfacets (but at least
3888 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3889 * the most-recently-used bucket of subfacets is kept, so actually an
3890 * arbitrary number of subfacets can be kept in any given expiration run
3891 * (though the next run will delete most of those unless they receive
3894 * This requires a second pass through the subfacets, in addition to the
3895 * pass made by update_stats(), because the former function never looks at
3896 * uninstallable subfacets.
3898 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
3899 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
3900 int buckets
[N_BUCKETS
] = { 0 };
3901 int total
, subtotal
, bucket
;
3902 struct subfacet
*subfacet
;
3906 total
= hmap_count(&ofproto
->subfacets
);
3907 if (total
<= ofproto
->up
.flow_eviction_threshold
) {
3908 return N_BUCKETS
* BUCKET_WIDTH
;
3911 /* Build histogram. */
3913 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->subfacets
) {
3914 long long int idle
= now
- subfacet
->used
;
3915 int bucket
= (idle
<= 0 ? 0
3916 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
3917 : (unsigned int) idle
/ BUCKET_WIDTH
);
3921 /* Find the first bucket whose flows should be expired. */
3922 subtotal
= bucket
= 0;
3924 subtotal
+= buckets
[bucket
++];
3925 } while (bucket
< N_BUCKETS
&&
3926 subtotal
< MAX(ofproto
->up
.flow_eviction_threshold
, total
/ 100));
3928 if (VLOG_IS_DBG_ENABLED()) {
3932 ds_put_cstr(&s
, "keep");
3933 for (i
= 0; i
< N_BUCKETS
; i
++) {
3935 ds_put_cstr(&s
, ", drop");
3938 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
3941 VLOG_INFO("%s: %s (msec:count)", ofproto
->up
.name
, ds_cstr(&s
));
3945 return bucket
* BUCKET_WIDTH
;
3949 expire_subfacets(struct ofproto_dpif
*ofproto
, int dp_max_idle
)
3951 /* Cutoff time for most flows. */
3952 long long int normal_cutoff
= time_msec() - dp_max_idle
;
3954 /* We really want to keep flows for special protocols around, so use a more
3955 * conservative cutoff. */
3956 long long int special_cutoff
= time_msec() - 10000;
3958 struct subfacet
*subfacet
, *next_subfacet
;
3959 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
3963 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
3964 &ofproto
->subfacets
) {
3965 long long int cutoff
;
3967 cutoff
= (subfacet
->slow
& (SLOW_CFM
| SLOW_LACP
| SLOW_STP
)
3970 if (subfacet
->used
< cutoff
) {
3971 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
3972 batch
[n_batch
++] = subfacet
;
3973 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
3974 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
3978 subfacet_destroy(subfacet
);
3984 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
3988 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3989 * then delete it entirely. */
3991 rule_expire(struct rule_dpif
*rule
)
3993 struct facet
*facet
, *next_facet
;
3997 if (rule
->up
.pending
) {
3998 /* We'll have to expire it later. */
4002 /* Has 'rule' expired? */
4004 if (rule
->up
.hard_timeout
4005 && now
> rule
->up
.modified
+ rule
->up
.hard_timeout
* 1000) {
4006 reason
= OFPRR_HARD_TIMEOUT
;
4007 } else if (rule
->up
.idle_timeout
4008 && now
> rule
->up
.used
+ rule
->up
.idle_timeout
* 1000) {
4009 reason
= OFPRR_IDLE_TIMEOUT
;
4014 COVERAGE_INC(ofproto_dpif_expired
);
4016 /* Update stats. (This is a no-op if the rule expired due to an idle
4017 * timeout, because that only happens when the rule has no facets left.) */
4018 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4019 facet_remove(facet
);
4022 /* Get rid of the rule. */
4023 ofproto_rule_expire(&rule
->up
, reason
);
4028 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
4030 * The caller must already have determined that no facet with an identical
4031 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
4032 * the ofproto's classifier table.
4034 * 'hash' must be the return value of flow_hash(flow, 0).
4036 * The facet will initially have no subfacets. The caller should create (at
4037 * least) one subfacet with subfacet_create(). */
4038 static struct facet
*
4039 facet_create(struct rule_dpif
*rule
, const struct flow
*flow
, uint32_t hash
)
4041 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4042 struct facet
*facet
;
4044 facet
= xzalloc(sizeof *facet
);
4045 facet
->used
= time_msec();
4046 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, hash
);
4047 list_push_back(&rule
->facets
, &facet
->list_node
);
4049 facet
->flow
= *flow
;
4050 list_init(&facet
->subfacets
);
4051 netflow_flow_init(&facet
->nf_flow
);
4052 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
4058 facet_free(struct facet
*facet
)
4063 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4064 * 'packet', which arrived on 'in_port'.
4066 * Takes ownership of 'packet'. */
4068 execute_odp_actions(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4069 const struct nlattr
*odp_actions
, size_t actions_len
,
4070 struct ofpbuf
*packet
)
4072 struct odputil_keybuf keybuf
;
4076 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
4077 odp_flow_key_from_flow(&key
, flow
,
4078 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
4080 error
= dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
4081 odp_actions
, actions_len
, packet
);
4083 ofpbuf_delete(packet
);
4087 /* Remove 'facet' from 'ofproto' and free up the associated memory:
4089 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4090 * rule's statistics, via subfacet_uninstall().
4092 * - Removes 'facet' from its rule and from ofproto->facets.
4095 facet_remove(struct facet
*facet
)
4097 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4098 struct subfacet
*subfacet
, *next_subfacet
;
4100 assert(!list_is_empty(&facet
->subfacets
));
4102 /* First uninstall all of the subfacets to get final statistics. */
4103 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4104 subfacet_uninstall(subfacet
);
4107 /* Flush the final stats to the rule.
4109 * This might require us to have at least one subfacet around so that we
4110 * can use its actions for accounting in facet_account(), which is why we
4111 * have uninstalled but not yet destroyed the subfacets. */
4112 facet_flush_stats(facet
);
4114 /* Now we're really all done so destroy everything. */
4115 LIST_FOR_EACH_SAFE (subfacet
, next_subfacet
, list_node
,
4116 &facet
->subfacets
) {
4117 subfacet_destroy__(subfacet
);
4119 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
4120 list_remove(&facet
->list_node
);
4124 /* Feed information from 'facet' back into the learning table to keep it in
4125 * sync with what is actually flowing through the datapath. */
4127 facet_learn(struct facet
*facet
)
4129 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4130 struct action_xlate_ctx ctx
;
4132 if (!facet
->has_learn
4133 && !facet
->has_normal
4134 && (!facet
->has_fin_timeout
4135 || !(facet
->tcp_flags
& (TCP_FIN
| TCP_RST
)))) {
4139 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4140 facet
->flow
.vlan_tci
,
4141 facet
->rule
, facet
->tcp_flags
, NULL
);
4142 ctx
.may_learn
= true;
4143 xlate_actions_for_side_effects(&ctx
, facet
->rule
->up
.ofpacts
,
4144 facet
->rule
->up
.ofpacts_len
);
4148 facet_account(struct facet
*facet
)
4150 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4151 struct subfacet
*subfacet
;
4152 const struct nlattr
*a
;
4157 if (!facet
->has_normal
|| !ofproto
->has_bonded_bundles
) {
4160 n_bytes
= facet
->byte_count
- facet
->accounted_bytes
;
4162 /* This loop feeds byte counters to bond_account() for rebalancing to use
4163 * as a basis. We also need to track the actual VLAN on which the packet
4164 * is going to be sent to ensure that it matches the one passed to
4165 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4168 * We use the actions from an arbitrary subfacet because they should all
4169 * be equally valid for our purpose. */
4170 subfacet
= CONTAINER_OF(list_front(&facet
->subfacets
),
4171 struct subfacet
, list_node
);
4172 vlan_tci
= facet
->flow
.vlan_tci
;
4173 NL_ATTR_FOR_EACH_UNSAFE (a
, left
,
4174 subfacet
->actions
, subfacet
->actions_len
) {
4175 const struct ovs_action_push_vlan
*vlan
;
4176 struct ofport_dpif
*port
;
4178 switch (nl_attr_type(a
)) {
4179 case OVS_ACTION_ATTR_OUTPUT
:
4180 port
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
4181 if (port
&& port
->bundle
&& port
->bundle
->bond
) {
4182 bond_account(port
->bundle
->bond
, &facet
->flow
,
4183 vlan_tci_to_vid(vlan_tci
), n_bytes
);
4187 case OVS_ACTION_ATTR_POP_VLAN
:
4188 vlan_tci
= htons(0);
4191 case OVS_ACTION_ATTR_PUSH_VLAN
:
4192 vlan
= nl_attr_get(a
);
4193 vlan_tci
= vlan
->vlan_tci
;
4199 /* Returns true if the only action for 'facet' is to send to the controller.
4200 * (We don't report NetFlow expiration messages for such facets because they
4201 * are just part of the control logic for the network, not real traffic). */
4203 facet_is_controller_flow(struct facet
*facet
)
4206 const struct rule
*rule
= &facet
->rule
->up
;
4207 const struct ofpact
*ofpacts
= rule
->ofpacts
;
4208 size_t ofpacts_len
= rule
->ofpacts_len
;
4210 if (ofpacts_len
> 0 &&
4211 ofpacts
->type
== OFPACT_CONTROLLER
&&
4212 ofpact_next(ofpacts
) >= ofpact_end(ofpacts
, ofpacts_len
)) {
4219 /* Folds all of 'facet''s statistics into its rule. Also updates the
4220 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4221 * 'facet''s statistics in the datapath should have been zeroed and folded into
4222 * its packet and byte counts before this function is called. */
4224 facet_flush_stats(struct facet
*facet
)
4226 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4227 struct subfacet
*subfacet
;
4229 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4230 assert(!subfacet
->dp_byte_count
);
4231 assert(!subfacet
->dp_packet_count
);
4234 facet_push_stats(facet
);
4235 if (facet
->accounted_bytes
< facet
->byte_count
) {
4236 facet_account(facet
);
4237 facet
->accounted_bytes
= facet
->byte_count
;
4240 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
4241 struct ofexpired expired
;
4242 expired
.flow
= facet
->flow
;
4243 expired
.packet_count
= facet
->packet_count
;
4244 expired
.byte_count
= facet
->byte_count
;
4245 expired
.used
= facet
->used
;
4246 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4249 facet
->rule
->packet_count
+= facet
->packet_count
;
4250 facet
->rule
->byte_count
+= facet
->byte_count
;
4252 /* Reset counters to prevent double counting if 'facet' ever gets
4254 facet_reset_counters(facet
);
4256 netflow_flow_clear(&facet
->nf_flow
);
4257 facet
->tcp_flags
= 0;
4260 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4261 * Returns it if found, otherwise a null pointer.
4263 * 'hash' must be the return value of flow_hash(flow, 0).
4265 * The returned facet might need revalidation; use facet_lookup_valid()
4266 * instead if that is important. */
4267 static struct facet
*
4268 facet_find(struct ofproto_dpif
*ofproto
,
4269 const struct flow
*flow
, uint32_t hash
)
4271 struct facet
*facet
;
4273 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, hash
, &ofproto
->facets
) {
4274 if (flow_equal(flow
, &facet
->flow
)) {
4282 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4283 * Returns it if found, otherwise a null pointer.
4285 * 'hash' must be the return value of flow_hash(flow, 0).
4287 * The returned facet is guaranteed to be valid. */
4288 static struct facet
*
4289 facet_lookup_valid(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4292 struct facet
*facet
;
4294 facet
= facet_find(ofproto
, flow
, hash
);
4296 && (ofproto
->need_revalidate
4297 || tag_set_intersects(&ofproto
->revalidate_set
, facet
->tags
))) {
4298 facet_revalidate(facet
);
4305 subfacet_path_to_string(enum subfacet_path path
)
4308 case SF_NOT_INSTALLED
:
4309 return "not installed";
4311 return "in fast path";
4313 return "in slow path";
4319 /* Returns the path in which a subfacet should be installed if its 'slow'
4320 * member has the specified value. */
4321 static enum subfacet_path
4322 subfacet_want_path(enum slow_path_reason slow
)
4324 return slow
? SF_SLOW_PATH
: SF_FAST_PATH
;
4327 /* Returns true if 'subfacet' needs to have its datapath flow updated,
4328 * supposing that its actions have been recalculated as 'want_actions' and that
4329 * 'slow' is nonzero iff 'subfacet' should be in the slow path. */
4331 subfacet_should_install(struct subfacet
*subfacet
, enum slow_path_reason slow
,
4332 const struct ofpbuf
*want_actions
)
4334 enum subfacet_path want_path
= subfacet_want_path(slow
);
4335 return (want_path
!= subfacet
->path
4336 || (want_path
== SF_FAST_PATH
4337 && (subfacet
->actions_len
!= want_actions
->size
4338 || memcmp(subfacet
->actions
, want_actions
->data
,
4339 subfacet
->actions_len
))));
4343 facet_check_consistency(struct facet
*facet
)
4345 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
4347 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4349 uint64_t odp_actions_stub
[1024 / 8];
4350 struct ofpbuf odp_actions
;
4352 struct rule_dpif
*rule
;
4353 struct subfacet
*subfacet
;
4354 bool may_log
= false;
4357 /* Check the rule for consistency. */
4358 rule
= rule_dpif_lookup(ofproto
, &facet
->flow
);
4359 ok
= rule
== facet
->rule
;
4361 may_log
= !VLOG_DROP_WARN(&rl
);
4366 flow_format(&s
, &facet
->flow
);
4367 ds_put_format(&s
, ": facet associated with wrong rule (was "
4368 "table=%"PRIu8
",", facet
->rule
->up
.table_id
);
4369 cls_rule_format(&facet
->rule
->up
.cr
, &s
);
4370 ds_put_format(&s
, ") (should have been table=%"PRIu8
",",
4372 cls_rule_format(&rule
->up
.cr
, &s
);
4373 ds_put_char(&s
, ')');
4375 VLOG_WARN("%s", ds_cstr(&s
));
4380 /* Check the datapath actions for consistency. */
4381 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
4382 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4383 enum subfacet_path want_path
;
4384 struct odputil_keybuf keybuf
;
4385 struct action_xlate_ctx ctx
;
4389 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4390 subfacet
->initial_tci
, rule
, 0, NULL
);
4391 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
4394 if (subfacet
->path
== SF_NOT_INSTALLED
) {
4395 /* This only happens if the datapath reported an error when we
4396 * tried to install the flow. Don't flag another error here. */
4400 want_path
= subfacet_want_path(subfacet
->slow
);
4401 if (want_path
== SF_SLOW_PATH
&& subfacet
->path
== SF_SLOW_PATH
) {
4402 /* The actions for slow-path flows may legitimately vary from one
4403 * packet to the next. We're done. */
4407 if (!subfacet_should_install(subfacet
, subfacet
->slow
, &odp_actions
)) {
4411 /* Inconsistency! */
4413 may_log
= !VLOG_DROP_WARN(&rl
);
4417 /* Rate-limited, skip reporting. */
4422 subfacet_get_key(subfacet
, &keybuf
, &key
);
4423 odp_flow_key_format(key
.data
, key
.size
, &s
);
4425 ds_put_cstr(&s
, ": inconsistency in subfacet");
4426 if (want_path
!= subfacet
->path
) {
4427 enum odp_key_fitness fitness
= subfacet
->key_fitness
;
4429 ds_put_format(&s
, " (%s, fitness=%s)",
4430 subfacet_path_to_string(subfacet
->path
),
4431 odp_key_fitness_to_string(fitness
));
4432 ds_put_format(&s
, " (should have been %s)",
4433 subfacet_path_to_string(want_path
));
4434 } else if (want_path
== SF_FAST_PATH
) {
4435 ds_put_cstr(&s
, " (actions were: ");
4436 format_odp_actions(&s
, subfacet
->actions
,
4437 subfacet
->actions_len
);
4438 ds_put_cstr(&s
, ") (correct actions: ");
4439 format_odp_actions(&s
, odp_actions
.data
, odp_actions
.size
);
4440 ds_put_char(&s
, ')');
4442 ds_put_cstr(&s
, " (actions: ");
4443 format_odp_actions(&s
, subfacet
->actions
,
4444 subfacet
->actions_len
);
4445 ds_put_char(&s
, ')');
4447 VLOG_WARN("%s", ds_cstr(&s
));
4450 ofpbuf_uninit(&odp_actions
);
4455 /* Re-searches the classifier for 'facet':
4457 * - If the rule found is different from 'facet''s current rule, moves
4458 * 'facet' to the new rule and recompiles its actions.
4460 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4461 * where it is and recompiles its actions anyway. */
4463 facet_revalidate(struct facet
*facet
)
4465 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4467 struct nlattr
*odp_actions
;
4470 struct actions
*new_actions
;
4472 struct action_xlate_ctx ctx
;
4473 uint64_t odp_actions_stub
[1024 / 8];
4474 struct ofpbuf odp_actions
;
4476 struct rule_dpif
*new_rule
;
4477 struct subfacet
*subfacet
;
4480 COVERAGE_INC(facet_revalidate
);
4482 new_rule
= rule_dpif_lookup(ofproto
, &facet
->flow
);
4484 /* Calculate new datapath actions.
4486 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4487 * emit a NetFlow expiration and, if so, we need to have the old state
4488 * around to properly compose it. */
4490 /* If the datapath actions changed or the installability changed,
4491 * then we need to talk to the datapath. */
4494 memset(&ctx
, 0, sizeof ctx
);
4495 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
4496 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4497 enum slow_path_reason slow
;
4499 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4500 subfacet
->initial_tci
, new_rule
, 0, NULL
);
4501 xlate_actions(&ctx
, new_rule
->up
.ofpacts
, new_rule
->up
.ofpacts_len
,
4504 slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
4505 if (subfacet_should_install(subfacet
, slow
, &odp_actions
)) {
4506 struct dpif_flow_stats stats
;
4508 subfacet_install(subfacet
,
4509 odp_actions
.data
, odp_actions
.size
, &stats
, slow
);
4510 subfacet_update_stats(subfacet
, &stats
);
4513 new_actions
= xcalloc(list_size(&facet
->subfacets
),
4514 sizeof *new_actions
);
4516 new_actions
[i
].odp_actions
= xmemdup(odp_actions
.data
,
4518 new_actions
[i
].actions_len
= odp_actions
.size
;
4523 ofpbuf_uninit(&odp_actions
);
4526 facet_flush_stats(facet
);
4529 /* Update 'facet' now that we've taken care of all the old state. */
4530 facet
->tags
= ctx
.tags
;
4531 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
4532 facet
->has_learn
= ctx
.has_learn
;
4533 facet
->has_normal
= ctx
.has_normal
;
4534 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
4535 facet
->mirrors
= ctx
.mirrors
;
4538 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4539 subfacet
->slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
4541 if (new_actions
&& new_actions
[i
].odp_actions
) {
4542 free(subfacet
->actions
);
4543 subfacet
->actions
= new_actions
[i
].odp_actions
;
4544 subfacet
->actions_len
= new_actions
[i
].actions_len
;
4550 if (facet
->rule
!= new_rule
) {
4551 COVERAGE_INC(facet_changed_rule
);
4552 list_remove(&facet
->list_node
);
4553 list_push_back(&new_rule
->facets
, &facet
->list_node
);
4554 facet
->rule
= new_rule
;
4555 facet
->used
= new_rule
->up
.created
;
4556 facet
->prev_used
= facet
->used
;
4560 /* Updates 'facet''s used time. Caller is responsible for calling
4561 * facet_push_stats() to update the flows which 'facet' resubmits into. */
4563 facet_update_time(struct facet
*facet
, long long int used
)
4565 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4566 if (used
> facet
->used
) {
4568 ofproto_rule_update_used(&facet
->rule
->up
, used
);
4569 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
4574 facet_reset_counters(struct facet
*facet
)
4576 facet
->packet_count
= 0;
4577 facet
->byte_count
= 0;
4578 facet
->prev_packet_count
= 0;
4579 facet
->prev_byte_count
= 0;
4580 facet
->accounted_bytes
= 0;
4584 facet_push_stats(struct facet
*facet
)
4586 struct dpif_flow_stats stats
;
4588 assert(facet
->packet_count
>= facet
->prev_packet_count
);
4589 assert(facet
->byte_count
>= facet
->prev_byte_count
);
4590 assert(facet
->used
>= facet
->prev_used
);
4592 stats
.n_packets
= facet
->packet_count
- facet
->prev_packet_count
;
4593 stats
.n_bytes
= facet
->byte_count
- facet
->prev_byte_count
;
4594 stats
.used
= facet
->used
;
4595 stats
.tcp_flags
= 0;
4597 if (stats
.n_packets
|| stats
.n_bytes
|| facet
->used
> facet
->prev_used
) {
4598 facet
->prev_packet_count
= facet
->packet_count
;
4599 facet
->prev_byte_count
= facet
->byte_count
;
4600 facet
->prev_used
= facet
->used
;
4602 flow_push_stats(facet
->rule
, &facet
->flow
, &stats
);
4604 update_mirror_stats(ofproto_dpif_cast(facet
->rule
->up
.ofproto
),
4605 facet
->mirrors
, stats
.n_packets
, stats
.n_bytes
);
4610 rule_credit_stats(struct rule_dpif
*rule
, const struct dpif_flow_stats
*stats
)
4612 rule
->packet_count
+= stats
->n_packets
;
4613 rule
->byte_count
+= stats
->n_bytes
;
4614 ofproto_rule_update_used(&rule
->up
, stats
->used
);
4617 /* Pushes flow statistics to the rules which 'flow' resubmits into given
4618 * 'rule''s actions and mirrors. */
4620 flow_push_stats(struct rule_dpif
*rule
,
4621 const struct flow
*flow
, const struct dpif_flow_stats
*stats
)
4623 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4624 struct action_xlate_ctx ctx
;
4626 ofproto_rule_update_used(&rule
->up
, stats
->used
);
4628 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
, rule
,
4630 ctx
.resubmit_stats
= stats
;
4631 xlate_actions_for_side_effects(&ctx
, rule
->up
.ofpacts
,
4632 rule
->up
.ofpacts_len
);
4637 static struct subfacet
*
4638 subfacet_find(struct ofproto_dpif
*ofproto
,
4639 const struct nlattr
*key
, size_t key_len
, uint32_t key_hash
,
4640 const struct flow
*flow
)
4642 struct subfacet
*subfacet
;
4644 HMAP_FOR_EACH_WITH_HASH (subfacet
, hmap_node
, key_hash
,
4645 &ofproto
->subfacets
) {
4647 ? (subfacet
->key_len
== key_len
4648 && !memcmp(key
, subfacet
->key
, key_len
))
4649 : flow_equal(flow
, &subfacet
->facet
->flow
)) {
4657 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4658 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
4659 * existing subfacet if there is one, otherwise creates and returns a
4662 * If the returned subfacet is new, then subfacet->actions will be NULL, in
4663 * which case the caller must populate the actions with
4664 * subfacet_make_actions(). */
4665 static struct subfacet
*
4666 subfacet_create(struct facet
*facet
, struct flow_miss
*miss
,
4669 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4670 enum odp_key_fitness key_fitness
= miss
->key_fitness
;
4671 const struct nlattr
*key
= miss
->key
;
4672 size_t key_len
= miss
->key_len
;
4674 struct subfacet
*subfacet
;
4676 key_hash
= odp_flow_key_hash(key
, key_len
);
4678 if (list_is_empty(&facet
->subfacets
)) {
4679 subfacet
= &facet
->one_subfacet
;
4681 subfacet
= subfacet_find(ofproto
, key
, key_len
, key_hash
,
4684 if (subfacet
->facet
== facet
) {
4688 /* This shouldn't happen. */
4689 VLOG_ERR_RL(&rl
, "subfacet with wrong facet");
4690 subfacet_destroy(subfacet
);
4693 subfacet
= xmalloc(sizeof *subfacet
);
4696 hmap_insert(&ofproto
->subfacets
, &subfacet
->hmap_node
, key_hash
);
4697 list_push_back(&facet
->subfacets
, &subfacet
->list_node
);
4698 subfacet
->facet
= facet
;
4699 subfacet
->key_fitness
= key_fitness
;
4700 if (key_fitness
!= ODP_FIT_PERFECT
) {
4701 subfacet
->key
= xmemdup(key
, key_len
);
4702 subfacet
->key_len
= key_len
;
4704 subfacet
->key
= NULL
;
4705 subfacet
->key_len
= 0;
4707 subfacet
->used
= now
;
4708 subfacet
->dp_packet_count
= 0;
4709 subfacet
->dp_byte_count
= 0;
4710 subfacet
->actions_len
= 0;
4711 subfacet
->actions
= NULL
;
4712 subfacet
->slow
= (subfacet
->key_fitness
== ODP_FIT_TOO_LITTLE
4715 subfacet
->path
= SF_NOT_INSTALLED
;
4716 subfacet
->initial_tci
= miss
->initial_tci
;
4717 subfacet
->odp_in_port
= miss
->odp_in_port
;
4722 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4723 * its facet within 'ofproto', and frees it. */
4725 subfacet_destroy__(struct subfacet
*subfacet
)
4727 struct facet
*facet
= subfacet
->facet
;
4728 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4730 subfacet_uninstall(subfacet
);
4731 hmap_remove(&ofproto
->subfacets
, &subfacet
->hmap_node
);
4732 list_remove(&subfacet
->list_node
);
4733 free(subfacet
->key
);
4734 free(subfacet
->actions
);
4735 if (subfacet
!= &facet
->one_subfacet
) {
4740 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4741 * last remaining subfacet in its facet destroys the facet too. */
4743 subfacet_destroy(struct subfacet
*subfacet
)
4745 struct facet
*facet
= subfacet
->facet
;
4747 if (list_is_singleton(&facet
->subfacets
)) {
4748 /* facet_remove() needs at least one subfacet (it will remove it). */
4749 facet_remove(facet
);
4751 subfacet_destroy__(subfacet
);
4756 subfacet_destroy_batch(struct ofproto_dpif
*ofproto
,
4757 struct subfacet
**subfacets
, int n
)
4759 struct odputil_keybuf keybufs
[SUBFACET_DESTROY_MAX_BATCH
];
4760 struct dpif_op ops
[SUBFACET_DESTROY_MAX_BATCH
];
4761 struct dpif_op
*opsp
[SUBFACET_DESTROY_MAX_BATCH
];
4762 struct ofpbuf keys
[SUBFACET_DESTROY_MAX_BATCH
];
4763 struct dpif_flow_stats stats
[SUBFACET_DESTROY_MAX_BATCH
];
4766 for (i
= 0; i
< n
; i
++) {
4767 ops
[i
].type
= DPIF_OP_FLOW_DEL
;
4768 subfacet_get_key(subfacets
[i
], &keybufs
[i
], &keys
[i
]);
4769 ops
[i
].u
.flow_del
.key
= keys
[i
].data
;
4770 ops
[i
].u
.flow_del
.key_len
= keys
[i
].size
;
4771 ops
[i
].u
.flow_del
.stats
= &stats
[i
];
4775 dpif_operate(ofproto
->backer
->dpif
, opsp
, n
);
4776 for (i
= 0; i
< n
; i
++) {
4777 subfacet_reset_dp_stats(subfacets
[i
], &stats
[i
]);
4778 subfacets
[i
]->path
= SF_NOT_INSTALLED
;
4779 subfacet_destroy(subfacets
[i
]);
4783 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
4784 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
4785 * for use as temporary storage. */
4787 subfacet_get_key(struct subfacet
*subfacet
, struct odputil_keybuf
*keybuf
,
4791 if (!subfacet
->key
) {
4792 struct flow
*flow
= &subfacet
->facet
->flow
;
4794 ofpbuf_use_stack(key
, keybuf
, sizeof *keybuf
);
4795 odp_flow_key_from_flow(key
, flow
, subfacet
->odp_in_port
);
4797 ofpbuf_use_const(key
, subfacet
->key
, subfacet
->key_len
);
4801 /* Composes the datapath actions for 'subfacet' based on its rule's actions.
4802 * Translates the actions into 'odp_actions', which the caller must have
4803 * initialized and is responsible for uninitializing. */
4805 subfacet_make_actions(struct subfacet
*subfacet
, const struct ofpbuf
*packet
,
4806 struct ofpbuf
*odp_actions
)
4808 struct facet
*facet
= subfacet
->facet
;
4809 struct rule_dpif
*rule
= facet
->rule
;
4810 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4812 struct action_xlate_ctx ctx
;
4814 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
, subfacet
->initial_tci
,
4816 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, odp_actions
);
4817 facet
->tags
= ctx
.tags
;
4818 facet
->has_learn
= ctx
.has_learn
;
4819 facet
->has_normal
= ctx
.has_normal
;
4820 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
4821 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
4822 facet
->mirrors
= ctx
.mirrors
;
4824 subfacet
->slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
4825 if (subfacet
->actions_len
!= odp_actions
->size
4826 || memcmp(subfacet
->actions
, odp_actions
->data
, odp_actions
->size
)) {
4827 free(subfacet
->actions
);
4828 subfacet
->actions_len
= odp_actions
->size
;
4829 subfacet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
4833 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4834 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4835 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4836 * since 'subfacet' was last updated.
4838 * Returns 0 if successful, otherwise a positive errno value. */
4840 subfacet_install(struct subfacet
*subfacet
,
4841 const struct nlattr
*actions
, size_t actions_len
,
4842 struct dpif_flow_stats
*stats
,
4843 enum slow_path_reason slow
)
4845 struct facet
*facet
= subfacet
->facet
;
4846 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4847 enum subfacet_path path
= subfacet_want_path(slow
);
4848 uint64_t slow_path_stub
[128 / 8];
4849 struct odputil_keybuf keybuf
;
4850 enum dpif_flow_put_flags flags
;
4854 flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
4856 flags
|= DPIF_FP_ZERO_STATS
;
4859 if (path
== SF_SLOW_PATH
) {
4860 compose_slow_path(ofproto
, &facet
->flow
, slow
,
4861 slow_path_stub
, sizeof slow_path_stub
,
4862 &actions
, &actions_len
);
4865 subfacet_get_key(subfacet
, &keybuf
, &key
);
4866 ret
= dpif_flow_put(ofproto
->backer
->dpif
, flags
, key
.data
, key
.size
,
4867 actions
, actions_len
, stats
);
4870 subfacet_reset_dp_stats(subfacet
, stats
);
4874 subfacet
->path
= path
;
4880 subfacet_reinstall(struct subfacet
*subfacet
, struct dpif_flow_stats
*stats
)
4882 return subfacet_install(subfacet
, subfacet
->actions
, subfacet
->actions_len
,
4883 stats
, subfacet
->slow
);
4886 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4888 subfacet_uninstall(struct subfacet
*subfacet
)
4890 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
4891 struct rule_dpif
*rule
= subfacet
->facet
->rule
;
4892 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4893 struct odputil_keybuf keybuf
;
4894 struct dpif_flow_stats stats
;
4898 subfacet_get_key(subfacet
, &keybuf
, &key
);
4899 error
= dpif_flow_del(ofproto
->backer
->dpif
,
4900 key
.data
, key
.size
, &stats
);
4901 subfacet_reset_dp_stats(subfacet
, &stats
);
4903 subfacet_update_stats(subfacet
, &stats
);
4905 subfacet
->path
= SF_NOT_INSTALLED
;
4907 assert(subfacet
->dp_packet_count
== 0);
4908 assert(subfacet
->dp_byte_count
== 0);
4912 /* Resets 'subfacet''s datapath statistics counters. This should be called
4913 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4914 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4915 * was reset in the datapath. 'stats' will be modified to include only
4916 * statistics new since 'subfacet' was last updated. */
4918 subfacet_reset_dp_stats(struct subfacet
*subfacet
,
4919 struct dpif_flow_stats
*stats
)
4922 && subfacet
->dp_packet_count
<= stats
->n_packets
4923 && subfacet
->dp_byte_count
<= stats
->n_bytes
) {
4924 stats
->n_packets
-= subfacet
->dp_packet_count
;
4925 stats
->n_bytes
-= subfacet
->dp_byte_count
;
4928 subfacet
->dp_packet_count
= 0;
4929 subfacet
->dp_byte_count
= 0;
4932 /* Updates 'subfacet''s used time. The caller is responsible for calling
4933 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
4935 subfacet_update_time(struct subfacet
*subfacet
, long long int used
)
4937 if (used
> subfacet
->used
) {
4938 subfacet
->used
= used
;
4939 facet_update_time(subfacet
->facet
, used
);
4943 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4945 * Because of the meaning of a subfacet's counters, it only makes sense to do
4946 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4947 * represents a packet that was sent by hand or if it represents statistics
4948 * that have been cleared out of the datapath. */
4950 subfacet_update_stats(struct subfacet
*subfacet
,
4951 const struct dpif_flow_stats
*stats
)
4953 if (stats
->n_packets
|| stats
->used
> subfacet
->used
) {
4954 struct facet
*facet
= subfacet
->facet
;
4956 subfacet_update_time(subfacet
, stats
->used
);
4957 facet
->packet_count
+= stats
->n_packets
;
4958 facet
->byte_count
+= stats
->n_bytes
;
4959 facet
->tcp_flags
|= stats
->tcp_flags
;
4960 facet_push_stats(facet
);
4961 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
4967 static struct rule_dpif
*
4968 rule_dpif_lookup(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
4970 struct rule_dpif
*rule
;
4972 rule
= rule_dpif_lookup__(ofproto
, flow
, 0);
4977 return rule_dpif_miss_rule(ofproto
, flow
);
4980 static struct rule_dpif
*
4981 rule_dpif_lookup__(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4984 struct cls_rule
*cls_rule
;
4985 struct classifier
*cls
;
4987 if (table_id
>= N_TABLES
) {
4991 cls
= &ofproto
->up
.tables
[table_id
].cls
;
4992 if (flow
->nw_frag
& FLOW_NW_FRAG_ANY
4993 && ofproto
->up
.frag_handling
== OFPC_FRAG_NORMAL
) {
4994 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
4995 * are unavailable. */
4996 struct flow ofpc_normal_flow
= *flow
;
4997 ofpc_normal_flow
.tp_src
= htons(0);
4998 ofpc_normal_flow
.tp_dst
= htons(0);
4999 cls_rule
= classifier_lookup(cls
, &ofpc_normal_flow
);
5001 cls_rule
= classifier_lookup(cls
, flow
);
5003 return rule_dpif_cast(rule_from_cls_rule(cls_rule
));
5006 static struct rule_dpif
*
5007 rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
5009 struct ofport_dpif
*port
;
5011 port
= get_ofp_port(ofproto
, flow
->in_port
);
5013 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, flow
->in_port
);
5014 return ofproto
->miss_rule
;
5017 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_PACKET_IN
) {
5018 return ofproto
->no_packet_in_rule
;
5020 return ofproto
->miss_rule
;
5024 complete_operation(struct rule_dpif
*rule
)
5026 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5028 rule_invalidate(rule
);
5030 struct dpif_completion
*c
= xmalloc(sizeof *c
);
5031 c
->op
= rule
->up
.pending
;
5032 list_push_back(&ofproto
->completions
, &c
->list_node
);
5034 ofoperation_complete(rule
->up
.pending
, 0);
5038 static struct rule
*
5041 struct rule_dpif
*rule
= xmalloc(sizeof *rule
);
5046 rule_dealloc(struct rule
*rule_
)
5048 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5053 rule_construct(struct rule
*rule_
)
5055 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5056 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5057 struct rule_dpif
*victim
;
5060 rule
->packet_count
= 0;
5061 rule
->byte_count
= 0;
5063 victim
= rule_dpif_cast(ofoperation_get_victim(rule
->up
.pending
));
5064 if (victim
&& !list_is_empty(&victim
->facets
)) {
5065 struct facet
*facet
;
5067 rule
->facets
= victim
->facets
;
5068 list_moved(&rule
->facets
);
5069 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
5070 /* XXX: We're only clearing our local counters here. It's possible
5071 * that quite a few packets are unaccounted for in the datapath
5072 * statistics. These will be accounted to the new rule instead of
5073 * cleared as required. This could be fixed by clearing out the
5074 * datapath statistics for this facet, but currently it doesn't
5076 facet_reset_counters(facet
);
5080 /* Must avoid list_moved() in this case. */
5081 list_init(&rule
->facets
);
5084 table_id
= rule
->up
.table_id
;
5086 rule
->tag
= victim
->tag
;
5087 } else if (table_id
== 0) {
5092 miniflow_expand(&rule
->up
.cr
.match
.flow
, &flow
);
5093 rule
->tag
= rule_calculate_tag(&flow
, &rule
->up
.cr
.match
.mask
,
5094 ofproto
->tables
[table_id
].basis
);
5097 complete_operation(rule
);
5102 rule_destruct(struct rule
*rule_
)
5104 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5105 struct facet
*facet
, *next_facet
;
5107 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
5108 facet_revalidate(facet
);
5111 complete_operation(rule
);
5115 rule_get_stats(struct rule
*rule_
, uint64_t *packets
, uint64_t *bytes
)
5117 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5118 struct facet
*facet
;
5120 /* Start from historical data for 'rule' itself that are no longer tracked
5121 * in facets. This counts, for example, facets that have expired. */
5122 *packets
= rule
->packet_count
;
5123 *bytes
= rule
->byte_count
;
5125 /* Add any statistics that are tracked by facets. This includes
5126 * statistical data recently updated by ofproto_update_stats() as well as
5127 * stats for packets that were executed "by hand" via dpif_execute(). */
5128 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
5129 *packets
+= facet
->packet_count
;
5130 *bytes
+= facet
->byte_count
;
5135 rule_execute(struct rule
*rule_
, const struct flow
*flow
,
5136 struct ofpbuf
*packet
)
5138 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5139 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5141 struct dpif_flow_stats stats
;
5143 struct action_xlate_ctx ctx
;
5144 uint64_t odp_actions_stub
[1024 / 8];
5145 struct ofpbuf odp_actions
;
5147 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
5148 rule_credit_stats(rule
, &stats
);
5150 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
5151 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
,
5152 rule
, stats
.tcp_flags
, packet
);
5153 ctx
.resubmit_stats
= &stats
;
5154 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, &odp_actions
);
5156 execute_odp_actions(ofproto
, flow
, odp_actions
.data
,
5157 odp_actions
.size
, packet
);
5159 ofpbuf_uninit(&odp_actions
);
5165 rule_modify_actions(struct rule
*rule_
)
5167 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5169 complete_operation(rule
);
5172 /* Sends 'packet' out 'ofport'.
5173 * May modify 'packet'.
5174 * Returns 0 if successful, otherwise a positive errno value. */
5176 send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
5178 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
5179 struct ofpbuf key
, odp_actions
;
5180 struct odputil_keybuf keybuf
;
5185 flow_extract(packet
, 0, 0, NULL
, OFPP_LOCAL
, &flow
);
5186 odp_port
= vsp_realdev_to_vlandev(ofproto
, ofport
->odp_port
,
5188 if (odp_port
!= ofport
->odp_port
) {
5189 eth_pop_vlan(packet
);
5190 flow
.vlan_tci
= htons(0);
5193 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
5194 odp_flow_key_from_flow(&key
, &flow
,
5195 ofp_port_to_odp_port(ofproto
, flow
.in_port
));
5197 ofpbuf_init(&odp_actions
, 32);
5198 compose_sflow_action(ofproto
, &odp_actions
, &flow
, odp_port
);
5200 nl_msg_put_u32(&odp_actions
, OVS_ACTION_ATTR_OUTPUT
, odp_port
);
5201 error
= dpif_execute(ofproto
->backer
->dpif
,
5203 odp_actions
.data
, odp_actions
.size
,
5205 ofpbuf_uninit(&odp_actions
);
5208 VLOG_WARN_RL(&rl
, "%s: failed to send packet on port %"PRIu32
" (%s)",
5209 ofproto
->up
.name
, odp_port
, strerror(error
));
5211 ofproto_update_local_port_stats(ofport
->up
.ofproto
, packet
->size
, 0);
5215 /* OpenFlow to datapath action translation. */
5217 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
5218 struct action_xlate_ctx
*);
5219 static void xlate_normal(struct action_xlate_ctx
*);
5221 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5222 * The action will state 'slow' as the reason that the action is in the slow
5223 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5224 * dump-flows" output to see why a flow is in the slow path.)
5226 * The 'stub_size' bytes in 'stub' will be used to store the action.
5227 * 'stub_size' must be large enough for the action.
5229 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5232 compose_slow_path(const struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5233 enum slow_path_reason slow
,
5234 uint64_t *stub
, size_t stub_size
,
5235 const struct nlattr
**actionsp
, size_t *actions_lenp
)
5237 union user_action_cookie cookie
;
5240 cookie
.type
= USER_ACTION_COOKIE_SLOW_PATH
;
5241 cookie
.slow_path
.unused
= 0;
5242 cookie
.slow_path
.reason
= slow
;
5244 ofpbuf_use_stack(&buf
, stub
, stub_size
);
5245 if (slow
& (SLOW_CFM
| SLOW_LACP
| SLOW_STP
)) {
5246 uint32_t pid
= dpif_port_get_pid(ofproto
->backer
->dpif
, UINT16_MAX
);
5247 odp_put_userspace_action(pid
, &cookie
, &buf
);
5249 put_userspace_action(ofproto
, &buf
, flow
, &cookie
);
5251 *actionsp
= buf
.data
;
5252 *actions_lenp
= buf
.size
;
5256 put_userspace_action(const struct ofproto_dpif
*ofproto
,
5257 struct ofpbuf
*odp_actions
,
5258 const struct flow
*flow
,
5259 const union user_action_cookie
*cookie
)
5263 pid
= dpif_port_get_pid(ofproto
->backer
->dpif
,
5264 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
5266 return odp_put_userspace_action(pid
, cookie
, odp_actions
);
5270 compose_sflow_cookie(const struct ofproto_dpif
*ofproto
,
5271 ovs_be16 vlan_tci
, uint32_t odp_port
,
5272 unsigned int n_outputs
, union user_action_cookie
*cookie
)
5276 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
5277 cookie
->sflow
.vlan_tci
= vlan_tci
;
5279 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
5280 * port information") for the interpretation of cookie->output. */
5281 switch (n_outputs
) {
5283 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
5284 cookie
->sflow
.output
= 0x40000000 | 256;
5288 ifindex
= dpif_sflow_odp_port_to_ifindex(ofproto
->sflow
, odp_port
);
5290 cookie
->sflow
.output
= ifindex
;
5295 /* 0x80000000 means "multiple output ports. */
5296 cookie
->sflow
.output
= 0x80000000 | n_outputs
;
5301 /* Compose SAMPLE action for sFlow. */
5303 compose_sflow_action(const struct ofproto_dpif
*ofproto
,
5304 struct ofpbuf
*odp_actions
,
5305 const struct flow
*flow
,
5308 uint32_t probability
;
5309 union user_action_cookie cookie
;
5310 size_t sample_offset
, actions_offset
;
5313 if (!ofproto
->sflow
|| flow
->in_port
== OFPP_NONE
) {
5317 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
5319 /* Number of packets out of UINT_MAX to sample. */
5320 probability
= dpif_sflow_get_probability(ofproto
->sflow
);
5321 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
5323 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
5324 compose_sflow_cookie(ofproto
, htons(0), odp_port
,
5325 odp_port
== OVSP_NONE
? 0 : 1, &cookie
);
5326 cookie_offset
= put_userspace_action(ofproto
, odp_actions
, flow
, &cookie
);
5328 nl_msg_end_nested(odp_actions
, actions_offset
);
5329 nl_msg_end_nested(odp_actions
, sample_offset
);
5330 return cookie_offset
;
5333 /* SAMPLE action must be first action in any given list of actions.
5334 * At this point we do not have all information required to build it. So try to
5335 * build sample action as complete as possible. */
5337 add_sflow_action(struct action_xlate_ctx
*ctx
)
5339 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->ofproto
,
5341 &ctx
->flow
, OVSP_NONE
);
5342 ctx
->sflow_odp_port
= 0;
5343 ctx
->sflow_n_outputs
= 0;
5346 /* Fix SAMPLE action according to data collected while composing ODP actions.
5347 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
5348 * USERSPACE action's user-cookie which is required for sflow. */
5350 fix_sflow_action(struct action_xlate_ctx
*ctx
)
5352 const struct flow
*base
= &ctx
->base_flow
;
5353 union user_action_cookie
*cookie
;
5355 if (!ctx
->user_cookie_offset
) {
5359 cookie
= ofpbuf_at(ctx
->odp_actions
, ctx
->user_cookie_offset
,
5361 assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
5363 compose_sflow_cookie(ctx
->ofproto
, base
->vlan_tci
,
5364 ctx
->sflow_odp_port
, ctx
->sflow_n_outputs
, cookie
);
5368 compose_output_action__(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
,
5371 const struct ofport_dpif
*ofport
= get_ofp_port(ctx
->ofproto
, ofp_port
);
5372 uint32_t odp_port
= ofp_port_to_odp_port(ctx
->ofproto
, ofp_port
);
5373 ovs_be16 flow_vlan_tci
= ctx
->flow
.vlan_tci
;
5374 uint8_t flow_nw_tos
= ctx
->flow
.nw_tos
;
5378 struct priority_to_dscp
*pdscp
;
5380 if (ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FWD
) {
5381 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
5383 } else if (check_stp
&& !stp_forward_in_state(ofport
->stp_state
)) {
5384 xlate_report(ctx
, "STP not in forwarding state, skipping output");
5388 pdscp
= get_priority(ofport
, ctx
->flow
.skb_priority
);
5390 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
5391 ctx
->flow
.nw_tos
|= pdscp
->dscp
;
5394 /* We may not have an ofport record for this port, but it doesn't hurt
5395 * to allow forwarding to it anyhow. Maybe such a port will appear
5396 * later and we're pre-populating the flow table. */
5399 out_port
= vsp_realdev_to_vlandev(ctx
->ofproto
, odp_port
,
5400 ctx
->flow
.vlan_tci
);
5401 if (out_port
!= odp_port
) {
5402 ctx
->flow
.vlan_tci
= htons(0);
5404 commit_odp_actions(&ctx
->flow
, &ctx
->base_flow
, ctx
->odp_actions
);
5405 nl_msg_put_u32(ctx
->odp_actions
, OVS_ACTION_ATTR_OUTPUT
, out_port
);
5407 ctx
->sflow_odp_port
= odp_port
;
5408 ctx
->sflow_n_outputs
++;
5409 ctx
->nf_output_iface
= ofp_port
;
5410 ctx
->flow
.vlan_tci
= flow_vlan_tci
;
5411 ctx
->flow
.nw_tos
= flow_nw_tos
;
5415 compose_output_action(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
)
5417 compose_output_action__(ctx
, ofp_port
, true);
5421 xlate_table_action(struct action_xlate_ctx
*ctx
,
5422 uint16_t in_port
, uint8_t table_id
, bool may_packet_in
)
5424 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
5425 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
5426 struct rule_dpif
*rule
;
5427 uint16_t old_in_port
;
5428 uint8_t old_table_id
;
5430 old_table_id
= ctx
->table_id
;
5431 ctx
->table_id
= table_id
;
5433 /* Look up a flow with 'in_port' as the input port. */
5434 old_in_port
= ctx
->flow
.in_port
;
5435 ctx
->flow
.in_port
= in_port
;
5436 rule
= rule_dpif_lookup__(ofproto
, &ctx
->flow
, table_id
);
5439 if (table_id
> 0 && table_id
< N_TABLES
) {
5440 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
5441 if (table
->other_table
) {
5442 ctx
->tags
|= (rule
&& rule
->tag
5444 : rule_calculate_tag(&ctx
->flow
,
5445 &table
->other_table
->mask
,
5450 /* Restore the original input port. Otherwise OFPP_NORMAL and
5451 * OFPP_IN_PORT will have surprising behavior. */
5452 ctx
->flow
.in_port
= old_in_port
;
5454 if (ctx
->resubmit_hook
) {
5455 ctx
->resubmit_hook(ctx
, rule
);
5458 if (rule
== NULL
&& may_packet_in
) {
5460 * check if table configuration flags
5461 * OFPTC_TABLE_MISS_CONTROLLER, default.
5462 * OFPTC_TABLE_MISS_CONTINUE,
5463 * OFPTC_TABLE_MISS_DROP
5464 * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do?
5466 rule
= rule_dpif_miss_rule(ofproto
, &ctx
->flow
);
5470 struct rule_dpif
*old_rule
= ctx
->rule
;
5472 if (ctx
->resubmit_stats
) {
5473 rule_credit_stats(rule
, ctx
->resubmit_stats
);
5478 do_xlate_actions(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, ctx
);
5479 ctx
->rule
= old_rule
;
5483 ctx
->table_id
= old_table_id
;
5485 static struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
5487 VLOG_ERR_RL(&recurse_rl
, "resubmit actions recursed over %d times",
5488 MAX_RESUBMIT_RECURSION
);
5489 ctx
->max_resubmit_trigger
= true;
5494 xlate_ofpact_resubmit(struct action_xlate_ctx
*ctx
,
5495 const struct ofpact_resubmit
*resubmit
)
5500 in_port
= resubmit
->in_port
;
5501 if (in_port
== OFPP_IN_PORT
) {
5502 in_port
= ctx
->flow
.in_port
;
5505 table_id
= resubmit
->table_id
;
5506 if (table_id
== 255) {
5507 table_id
= ctx
->table_id
;
5510 xlate_table_action(ctx
, in_port
, table_id
, false);
5514 flood_packets(struct action_xlate_ctx
*ctx
, bool all
)
5516 struct ofport_dpif
*ofport
;
5518 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ctx
->ofproto
->up
.ports
) {
5519 uint16_t ofp_port
= ofport
->up
.ofp_port
;
5521 if (ofp_port
== ctx
->flow
.in_port
) {
5526 compose_output_action__(ctx
, ofp_port
, false);
5527 } else if (!(ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
)) {
5528 compose_output_action(ctx
, ofp_port
);
5532 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
5536 execute_controller_action(struct action_xlate_ctx
*ctx
, int len
,
5537 enum ofp_packet_in_reason reason
,
5538 uint16_t controller_id
)
5540 struct ofputil_packet_in pin
;
5541 struct ofpbuf
*packet
;
5543 ctx
->slow
|= SLOW_CONTROLLER
;
5548 packet
= ofpbuf_clone(ctx
->packet
);
5550 if (packet
->l2
&& packet
->l3
) {
5551 struct eth_header
*eh
;
5553 eth_pop_vlan(packet
);
5556 /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2
5557 * LLC frame. Calculating the Ethernet type of these frames is more
5558 * trouble than seems appropriate for a simple assertion. */
5559 assert(ntohs(eh
->eth_type
) < ETH_TYPE_MIN
5560 || eh
->eth_type
== ctx
->flow
.dl_type
);
5562 memcpy(eh
->eth_src
, ctx
->flow
.dl_src
, sizeof eh
->eth_src
);
5563 memcpy(eh
->eth_dst
, ctx
->flow
.dl_dst
, sizeof eh
->eth_dst
);
5565 if (ctx
->flow
.vlan_tci
& htons(VLAN_CFI
)) {
5566 eth_push_vlan(packet
, ctx
->flow
.vlan_tci
);
5570 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
5571 packet_set_ipv4(packet
, ctx
->flow
.nw_src
, ctx
->flow
.nw_dst
,
5572 ctx
->flow
.nw_tos
, ctx
->flow
.nw_ttl
);
5576 if (ctx
->flow
.nw_proto
== IPPROTO_TCP
) {
5577 packet_set_tcp_port(packet
, ctx
->flow
.tp_src
,
5579 } else if (ctx
->flow
.nw_proto
== IPPROTO_UDP
) {
5580 packet_set_udp_port(packet
, ctx
->flow
.tp_src
,
5587 pin
.packet
= packet
->data
;
5588 pin
.packet_len
= packet
->size
;
5589 pin
.reason
= reason
;
5590 pin
.controller_id
= controller_id
;
5591 pin
.table_id
= ctx
->table_id
;
5592 pin
.cookie
= ctx
->rule
? ctx
->rule
->up
.flow_cookie
: 0;
5595 flow_get_metadata(&ctx
->flow
, &pin
.fmd
);
5597 connmgr_send_packet_in(ctx
->ofproto
->up
.connmgr
, &pin
);
5598 ofpbuf_delete(packet
);
5602 compose_dec_ttl(struct action_xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
5604 if (ctx
->flow
.dl_type
!= htons(ETH_TYPE_IP
) &&
5605 ctx
->flow
.dl_type
!= htons(ETH_TYPE_IPV6
)) {
5609 if (ctx
->flow
.nw_ttl
> 1) {
5615 for (i
= 0; i
< ids
->n_controllers
; i
++) {
5616 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
5620 /* Stop processing for current table. */
5626 xlate_output_action(struct action_xlate_ctx
*ctx
,
5627 uint16_t port
, uint16_t max_len
, bool may_packet_in
)
5629 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
5631 ctx
->nf_output_iface
= NF_OUT_DROP
;
5635 compose_output_action(ctx
, ctx
->flow
.in_port
);
5638 xlate_table_action(ctx
, ctx
->flow
.in_port
, 0, may_packet_in
);
5644 flood_packets(ctx
, false);
5647 flood_packets(ctx
, true);
5649 case OFPP_CONTROLLER
:
5650 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
5656 if (port
!= ctx
->flow
.in_port
) {
5657 compose_output_action(ctx
, port
);
5659 xlate_report(ctx
, "skipping output to input port");
5664 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
5665 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
5666 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
5667 ctx
->nf_output_iface
= prev_nf_output_iface
;
5668 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
5669 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
5670 ctx
->nf_output_iface
= NF_OUT_MULTI
;
5675 xlate_output_reg_action(struct action_xlate_ctx
*ctx
,
5676 const struct ofpact_output_reg
*or)
5678 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->flow
);
5679 if (port
<= UINT16_MAX
) {
5680 xlate_output_action(ctx
, port
, or->max_len
, false);
5685 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
5686 const struct ofpact_enqueue
*enqueue
)
5688 uint16_t ofp_port
= enqueue
->port
;
5689 uint32_t queue_id
= enqueue
->queue
;
5690 uint32_t flow_priority
, priority
;
5693 /* Translate queue to priority. */
5694 error
= dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
5695 queue_id
, &priority
);
5697 /* Fall back to ordinary output action. */
5698 xlate_output_action(ctx
, enqueue
->port
, 0, false);
5702 /* Check output port. */
5703 if (ofp_port
== OFPP_IN_PORT
) {
5704 ofp_port
= ctx
->flow
.in_port
;
5705 } else if (ofp_port
== ctx
->flow
.in_port
) {
5709 /* Add datapath actions. */
5710 flow_priority
= ctx
->flow
.skb_priority
;
5711 ctx
->flow
.skb_priority
= priority
;
5712 compose_output_action(ctx
, ofp_port
);
5713 ctx
->flow
.skb_priority
= flow_priority
;
5715 /* Update NetFlow output port. */
5716 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
5717 ctx
->nf_output_iface
= ofp_port
;
5718 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
5719 ctx
->nf_output_iface
= NF_OUT_MULTI
;
5724 xlate_set_queue_action(struct action_xlate_ctx
*ctx
, uint32_t queue_id
)
5726 uint32_t skb_priority
;
5728 if (!dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
5729 queue_id
, &skb_priority
)) {
5730 ctx
->flow
.skb_priority
= skb_priority
;
5732 /* Couldn't translate queue to a priority. Nothing to do. A warning
5733 * has already been logged. */
5737 struct xlate_reg_state
{
5743 xlate_autopath(struct action_xlate_ctx
*ctx
,
5744 const struct ofpact_autopath
*ap
)
5746 uint16_t ofp_port
= ap
->port
;
5747 struct ofport_dpif
*port
= get_ofp_port(ctx
->ofproto
, ofp_port
);
5749 if (!port
|| !port
->bundle
) {
5750 ofp_port
= OFPP_NONE
;
5751 } else if (port
->bundle
->bond
) {
5752 /* Autopath does not support VLAN hashing. */
5753 struct ofport_dpif
*slave
= bond_choose_output_slave(
5754 port
->bundle
->bond
, &ctx
->flow
, 0, &ctx
->tags
);
5756 ofp_port
= slave
->up
.ofp_port
;
5759 nxm_reg_load(&ap
->dst
, ofp_port
, &ctx
->flow
);
5763 slave_enabled_cb(uint16_t ofp_port
, void *ofproto_
)
5765 struct ofproto_dpif
*ofproto
= ofproto_
;
5766 struct ofport_dpif
*port
;
5776 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
5779 port
= get_ofp_port(ofproto
, ofp_port
);
5780 return port
? port
->may_enable
: false;
5785 xlate_bundle_action(struct action_xlate_ctx
*ctx
,
5786 const struct ofpact_bundle
*bundle
)
5790 port
= bundle_execute(bundle
, &ctx
->flow
, slave_enabled_cb
, ctx
->ofproto
);
5791 if (bundle
->dst
.field
) {
5792 nxm_reg_load(&bundle
->dst
, port
, &ctx
->flow
);
5794 xlate_output_action(ctx
, port
, 0, false);
5799 xlate_learn_action(struct action_xlate_ctx
*ctx
,
5800 const struct ofpact_learn
*learn
)
5802 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 1);
5803 struct ofputil_flow_mod fm
;
5804 uint64_t ofpacts_stub
[1024 / 8];
5805 struct ofpbuf ofpacts
;
5808 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
5809 learn_execute(learn
, &ctx
->flow
, &fm
, &ofpacts
);
5811 error
= ofproto_flow_mod(&ctx
->ofproto
->up
, &fm
);
5812 if (error
&& !VLOG_DROP_WARN(&rl
)) {
5813 VLOG_WARN("learning action failed to modify flow table (%s)",
5814 ofperr_get_name(error
));
5817 ofpbuf_uninit(&ofpacts
);
5820 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
5821 * means "infinite". */
5823 reduce_timeout(uint16_t max
, uint16_t *timeout
)
5825 if (max
&& (!*timeout
|| *timeout
> max
)) {
5831 xlate_fin_timeout(struct action_xlate_ctx
*ctx
,
5832 const struct ofpact_fin_timeout
*oft
)
5834 if (ctx
->tcp_flags
& (TCP_FIN
| TCP_RST
) && ctx
->rule
) {
5835 struct rule_dpif
*rule
= ctx
->rule
;
5837 reduce_timeout(oft
->fin_idle_timeout
, &rule
->up
.idle_timeout
);
5838 reduce_timeout(oft
->fin_hard_timeout
, &rule
->up
.hard_timeout
);
5843 may_receive(const struct ofport_dpif
*port
, struct action_xlate_ctx
*ctx
)
5845 if (port
->up
.pp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
5846 ? OFPUTIL_PC_NO_RECV_STP
5847 : OFPUTIL_PC_NO_RECV
)) {
5851 /* Only drop packets here if both forwarding and learning are
5852 * disabled. If just learning is enabled, we need to have
5853 * OFPP_NORMAL and the learning action have a look at the packet
5854 * before we can drop it. */
5855 if (!stp_forward_in_state(port
->stp_state
)
5856 && !stp_learn_in_state(port
->stp_state
)) {
5864 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
5865 struct action_xlate_ctx
*ctx
)
5867 const struct ofport_dpif
*port
;
5868 bool was_evictable
= true;
5869 const struct ofpact
*a
;
5871 port
= get_ofp_port(ctx
->ofproto
, ctx
->flow
.in_port
);
5872 if (port
&& !may_receive(port
, ctx
)) {
5873 /* Drop this flow. */
5878 /* Don't let the rule we're working on get evicted underneath us. */
5879 was_evictable
= ctx
->rule
->up
.evictable
;
5880 ctx
->rule
->up
.evictable
= false;
5882 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
5883 struct ofpact_controller
*controller
;
5884 const struct ofpact_metadata
*metadata
;
5892 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
5893 ofpact_get_OUTPUT(a
)->max_len
, true);
5896 case OFPACT_CONTROLLER
:
5897 controller
= ofpact_get_CONTROLLER(a
);
5898 execute_controller_action(ctx
, controller
->max_len
,
5900 controller
->controller_id
);
5903 case OFPACT_ENQUEUE
:
5904 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
5907 case OFPACT_SET_VLAN_VID
:
5908 ctx
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
5909 ctx
->flow
.vlan_tci
|= (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
5913 case OFPACT_SET_VLAN_PCP
:
5914 ctx
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
5915 ctx
->flow
.vlan_tci
|= htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
5920 case OFPACT_STRIP_VLAN
:
5921 ctx
->flow
.vlan_tci
= htons(0);
5924 case OFPACT_PUSH_VLAN
:
5925 /* TODO:XXX 802.1AD(QinQ) */
5926 ctx
->flow
.vlan_tci
= htons(VLAN_CFI
);
5929 case OFPACT_SET_ETH_SRC
:
5930 memcpy(ctx
->flow
.dl_src
, ofpact_get_SET_ETH_SRC(a
)->mac
,
5934 case OFPACT_SET_ETH_DST
:
5935 memcpy(ctx
->flow
.dl_dst
, ofpact_get_SET_ETH_DST(a
)->mac
,
5939 case OFPACT_SET_IPV4_SRC
:
5940 ctx
->flow
.nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
5943 case OFPACT_SET_IPV4_DST
:
5944 ctx
->flow
.nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
5947 case OFPACT_SET_IPV4_DSCP
:
5948 /* OpenFlow 1.0 only supports IPv4. */
5949 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
5950 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
5951 ctx
->flow
.nw_tos
|= ofpact_get_SET_IPV4_DSCP(a
)->dscp
;
5955 case OFPACT_SET_L4_SRC_PORT
:
5956 ctx
->flow
.tp_src
= htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
5959 case OFPACT_SET_L4_DST_PORT
:
5960 ctx
->flow
.tp_dst
= htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
5963 case OFPACT_RESUBMIT
:
5964 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
5967 case OFPACT_SET_TUNNEL
:
5968 ctx
->flow
.tunnel
.tun_id
= htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
5971 case OFPACT_SET_QUEUE
:
5972 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
5975 case OFPACT_POP_QUEUE
:
5976 ctx
->flow
.skb_priority
= ctx
->orig_skb_priority
;
5979 case OFPACT_REG_MOVE
:
5980 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), &ctx
->flow
);
5983 case OFPACT_REG_LOAD
:
5984 nxm_execute_reg_load(ofpact_get_REG_LOAD(a
), &ctx
->flow
);
5987 case OFPACT_DEC_TTL
:
5988 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
5994 /* Nothing to do. */
5997 case OFPACT_MULTIPATH
:
5998 multipath_execute(ofpact_get_MULTIPATH(a
), &ctx
->flow
);
6001 case OFPACT_AUTOPATH
:
6002 xlate_autopath(ctx
, ofpact_get_AUTOPATH(a
));
6006 ctx
->ofproto
->has_bundle_action
= true;
6007 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
6010 case OFPACT_OUTPUT_REG
:
6011 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
6015 ctx
->has_learn
= true;
6016 if (ctx
->may_learn
) {
6017 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
6025 case OFPACT_FIN_TIMEOUT
:
6026 ctx
->has_fin_timeout
= true;
6027 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
6030 case OFPACT_CLEAR_ACTIONS
:
6032 * Nothing to do because writa-actions is not supported for now.
6033 * When writa-actions is supported, clear-actions also must
6034 * be supported at the same time.
6038 case OFPACT_WRITE_METADATA
:
6039 metadata
= ofpact_get_WRITE_METADATA(a
);
6040 ctx
->flow
.metadata
&= ~metadata
->mask
;
6041 ctx
->flow
.metadata
|= metadata
->metadata
& metadata
->mask
;
6044 case OFPACT_GOTO_TABLE
: {
6045 /* TODO:XXX remove recursion */
6046 /* It is assumed that goto-table is last action */
6047 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
6048 assert(ctx
->table_id
< ogt
->table_id
);
6049 xlate_table_action(ctx
, ctx
->flow
.in_port
, ogt
->table_id
, true);
6056 /* We've let OFPP_NORMAL and the learning action look at the packet,
6057 * so drop it now if forwarding is disabled. */
6058 if (port
&& !stp_forward_in_state(port
->stp_state
)) {
6059 ofpbuf_clear(ctx
->odp_actions
);
6060 add_sflow_action(ctx
);
6063 ctx
->rule
->up
.evictable
= was_evictable
;
6068 action_xlate_ctx_init(struct action_xlate_ctx
*ctx
,
6069 struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
6070 ovs_be16 initial_tci
, struct rule_dpif
*rule
,
6071 uint8_t tcp_flags
, const struct ofpbuf
*packet
)
6073 ctx
->ofproto
= ofproto
;
6075 ctx
->base_flow
= ctx
->flow
;
6076 memset(&ctx
->base_flow
.tunnel
, 0, sizeof ctx
->base_flow
.tunnel
);
6077 ctx
->base_flow
.vlan_tci
= initial_tci
;
6079 ctx
->packet
= packet
;
6080 ctx
->may_learn
= packet
!= NULL
;
6081 ctx
->tcp_flags
= tcp_flags
;
6082 ctx
->resubmit_hook
= NULL
;
6083 ctx
->report_hook
= NULL
;
6084 ctx
->resubmit_stats
= NULL
;
6087 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
6088 * into datapath actions in 'odp_actions', using 'ctx'. */
6090 xlate_actions(struct action_xlate_ctx
*ctx
,
6091 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
6092 struct ofpbuf
*odp_actions
)
6094 /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
6095 * that in the future we always keep a copy of the original flow for
6096 * tracing purposes. */
6097 static bool hit_resubmit_limit
;
6099 enum slow_path_reason special
;
6101 COVERAGE_INC(ofproto_dpif_xlate
);
6103 ofpbuf_clear(odp_actions
);
6104 ofpbuf_reserve(odp_actions
, NL_A_U32_SIZE
);
6106 ctx
->odp_actions
= odp_actions
;
6109 ctx
->has_learn
= false;
6110 ctx
->has_normal
= false;
6111 ctx
->has_fin_timeout
= false;
6112 ctx
->nf_output_iface
= NF_OUT_DROP
;
6115 ctx
->max_resubmit_trigger
= false;
6116 ctx
->orig_skb_priority
= ctx
->flow
.skb_priority
;
6120 if (ctx
->ofproto
->has_mirrors
|| hit_resubmit_limit
) {
6121 /* Do this conditionally because the copy is expensive enough that it
6122 * shows up in profiles.
6124 * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4
6125 * believe that I wasn't using it without initializing it if I kept it
6126 * in a local variable. */
6127 ctx
->orig_flow
= ctx
->flow
;
6130 if (ctx
->flow
.nw_frag
& FLOW_NW_FRAG_ANY
) {
6131 switch (ctx
->ofproto
->up
.frag_handling
) {
6132 case OFPC_FRAG_NORMAL
:
6133 /* We must pretend that transport ports are unavailable. */
6134 ctx
->flow
.tp_src
= ctx
->base_flow
.tp_src
= htons(0);
6135 ctx
->flow
.tp_dst
= ctx
->base_flow
.tp_dst
= htons(0);
6138 case OFPC_FRAG_DROP
:
6141 case OFPC_FRAG_REASM
:
6144 case OFPC_FRAG_NX_MATCH
:
6145 /* Nothing to do. */
6148 case OFPC_INVALID_TTL_TO_CONTROLLER
:
6153 special
= process_special(ctx
->ofproto
, &ctx
->flow
, ctx
->packet
);
6155 ctx
->slow
|= special
;
6157 static struct vlog_rate_limit trace_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
6158 ovs_be16 initial_tci
= ctx
->base_flow
.vlan_tci
;
6160 add_sflow_action(ctx
);
6161 do_xlate_actions(ofpacts
, ofpacts_len
, ctx
);
6163 if (ctx
->max_resubmit_trigger
&& !ctx
->resubmit_hook
) {
6164 if (!hit_resubmit_limit
) {
6165 /* We didn't record the original flow. Make sure we do from
6167 hit_resubmit_limit
= true;
6168 } else if (!VLOG_DROP_ERR(&trace_rl
)) {
6169 struct ds ds
= DS_EMPTY_INITIALIZER
;
6171 ofproto_trace(ctx
->ofproto
, &ctx
->orig_flow
, ctx
->packet
,
6173 VLOG_ERR("Trace triggered by excessive resubmit "
6174 "recursion:\n%s", ds_cstr(&ds
));
6179 if (!connmgr_may_set_up_flow(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
6180 ctx
->odp_actions
->data
,
6181 ctx
->odp_actions
->size
)) {
6182 ctx
->slow
|= SLOW_IN_BAND
;
6184 && connmgr_msg_in_hook(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
6186 compose_output_action(ctx
, OFPP_LOCAL
);
6189 if (ctx
->ofproto
->has_mirrors
) {
6190 add_mirror_actions(ctx
, &ctx
->orig_flow
);
6192 fix_sflow_action(ctx
);
6196 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
6197 * into datapath actions, using 'ctx', and discards the datapath actions. */
6199 xlate_actions_for_side_effects(struct action_xlate_ctx
*ctx
,
6200 const struct ofpact
*ofpacts
,
6203 uint64_t odp_actions_stub
[1024 / 8];
6204 struct ofpbuf odp_actions
;
6206 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
6207 xlate_actions(ctx
, ofpacts
, ofpacts_len
, &odp_actions
);
6208 ofpbuf_uninit(&odp_actions
);
6212 xlate_report(struct action_xlate_ctx
*ctx
, const char *s
)
6214 if (ctx
->report_hook
) {
6215 ctx
->report_hook(ctx
, s
);
6219 /* OFPP_NORMAL implementation. */
6221 static struct ofport_dpif
*ofbundle_get_a_port(const struct ofbundle
*);
6223 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
6224 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
6225 * the bundle on which the packet was received, returns the VLAN to which the
6228 * Both 'vid' and the return value are in the range 0...4095. */
6230 input_vid_to_vlan(const struct ofbundle
*in_bundle
, uint16_t vid
)
6232 switch (in_bundle
->vlan_mode
) {
6233 case PORT_VLAN_ACCESS
:
6234 return in_bundle
->vlan
;
6237 case PORT_VLAN_TRUNK
:
6240 case PORT_VLAN_NATIVE_UNTAGGED
:
6241 case PORT_VLAN_NATIVE_TAGGED
:
6242 return vid
? vid
: in_bundle
->vlan
;
6249 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
6250 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
6253 * 'vid' should be the VID obtained from the 802.1Q header that was received as
6254 * part of a packet (specify 0 if there was no 802.1Q header), in the range
6257 input_vid_is_valid(uint16_t vid
, struct ofbundle
*in_bundle
, bool warn
)
6259 /* Allow any VID on the OFPP_NONE port. */
6260 if (in_bundle
== &ofpp_none_bundle
) {
6264 switch (in_bundle
->vlan_mode
) {
6265 case PORT_VLAN_ACCESS
:
6268 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6269 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" tagged "
6270 "packet received on port %s configured as VLAN "
6271 "%"PRIu16
" access port",
6272 in_bundle
->ofproto
->up
.name
, vid
,
6273 in_bundle
->name
, in_bundle
->vlan
);
6279 case PORT_VLAN_NATIVE_UNTAGGED
:
6280 case PORT_VLAN_NATIVE_TAGGED
:
6282 /* Port must always carry its native VLAN. */
6286 case PORT_VLAN_TRUNK
:
6287 if (!ofbundle_includes_vlan(in_bundle
, vid
)) {
6289 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6290 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" packet "
6291 "received on port %s not configured for trunking "
6293 in_bundle
->ofproto
->up
.name
, vid
,
6294 in_bundle
->name
, vid
);
6306 /* Given 'vlan', the VLAN that a packet belongs to, and
6307 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
6308 * that should be included in the 802.1Q header. (If the return value is 0,
6309 * then the 802.1Q header should only be included in the packet if there is a
6312 * Both 'vlan' and the return value are in the range 0...4095. */
6314 output_vlan_to_vid(const struct ofbundle
*out_bundle
, uint16_t vlan
)
6316 switch (out_bundle
->vlan_mode
) {
6317 case PORT_VLAN_ACCESS
:
6320 case PORT_VLAN_TRUNK
:
6321 case PORT_VLAN_NATIVE_TAGGED
:
6324 case PORT_VLAN_NATIVE_UNTAGGED
:
6325 return vlan
== out_bundle
->vlan
? 0 : vlan
;
6333 output_normal(struct action_xlate_ctx
*ctx
, const struct ofbundle
*out_bundle
,
6336 struct ofport_dpif
*port
;
6338 ovs_be16 tci
, old_tci
;
6340 vid
= output_vlan_to_vid(out_bundle
, vlan
);
6341 if (!out_bundle
->bond
) {
6342 port
= ofbundle_get_a_port(out_bundle
);
6344 port
= bond_choose_output_slave(out_bundle
->bond
, &ctx
->flow
,
6347 /* No slaves enabled, so drop packet. */
6352 old_tci
= ctx
->flow
.vlan_tci
;
6354 if (tci
|| out_bundle
->use_priority_tags
) {
6355 tci
|= ctx
->flow
.vlan_tci
& htons(VLAN_PCP_MASK
);
6357 tci
|= htons(VLAN_CFI
);
6360 ctx
->flow
.vlan_tci
= tci
;
6362 compose_output_action(ctx
, port
->up
.ofp_port
);
6363 ctx
->flow
.vlan_tci
= old_tci
;
6367 mirror_mask_ffs(mirror_mask_t mask
)
6369 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask
));
6374 ofbundle_trunks_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
6376 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
6377 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
6381 ofbundle_includes_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
6383 return vlan
== bundle
->vlan
|| ofbundle_trunks_vlan(bundle
, vlan
);
6386 /* Returns an arbitrary interface within 'bundle'. */
6387 static struct ofport_dpif
*
6388 ofbundle_get_a_port(const struct ofbundle
*bundle
)
6390 return CONTAINER_OF(list_front(&bundle
->ports
),
6391 struct ofport_dpif
, bundle_node
);
6395 vlan_is_mirrored(const struct ofmirror
*m
, int vlan
)
6397 return !m
->vlans
|| bitmap_is_set(m
->vlans
, vlan
);
6401 add_mirror_actions(struct action_xlate_ctx
*ctx
, const struct flow
*orig_flow
)
6403 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
6404 mirror_mask_t mirrors
;
6405 struct ofbundle
*in_bundle
;
6408 const struct nlattr
*a
;
6411 in_bundle
= lookup_input_bundle(ctx
->ofproto
, orig_flow
->in_port
,
6412 ctx
->packet
!= NULL
, NULL
);
6416 mirrors
= in_bundle
->src_mirrors
;
6418 /* Drop frames on bundles reserved for mirroring. */
6419 if (in_bundle
->mirror_out
) {
6420 if (ctx
->packet
!= NULL
) {
6421 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6422 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
6423 "%s, which is reserved exclusively for mirroring",
6424 ctx
->ofproto
->up
.name
, in_bundle
->name
);
6430 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
6431 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
6434 vlan
= input_vid_to_vlan(in_bundle
, vid
);
6436 /* Look at the output ports to check for destination selections. */
6438 NL_ATTR_FOR_EACH (a
, left
, ctx
->odp_actions
->data
,
6439 ctx
->odp_actions
->size
) {
6440 enum ovs_action_attr type
= nl_attr_type(a
);
6441 struct ofport_dpif
*ofport
;
6443 if (type
!= OVS_ACTION_ATTR_OUTPUT
) {
6447 ofport
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
6448 if (ofport
&& ofport
->bundle
) {
6449 mirrors
|= ofport
->bundle
->dst_mirrors
;
6457 /* Restore the original packet before adding the mirror actions. */
6458 ctx
->flow
= *orig_flow
;
6463 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
6465 if (!vlan_is_mirrored(m
, vlan
)) {
6466 mirrors
= zero_rightmost_1bit(mirrors
);
6470 mirrors
&= ~m
->dup_mirrors
;
6471 ctx
->mirrors
|= m
->dup_mirrors
;
6473 output_normal(ctx
, m
->out
, vlan
);
6474 } else if (vlan
!= m
->out_vlan
6475 && !eth_addr_is_reserved(orig_flow
->dl_dst
)) {
6476 struct ofbundle
*bundle
;
6478 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
6479 if (ofbundle_includes_vlan(bundle
, m
->out_vlan
)
6480 && !bundle
->mirror_out
) {
6481 output_normal(ctx
, bundle
, m
->out_vlan
);
6489 update_mirror_stats(struct ofproto_dpif
*ofproto
, mirror_mask_t mirrors
,
6490 uint64_t packets
, uint64_t bytes
)
6496 for (; mirrors
; mirrors
= zero_rightmost_1bit(mirrors
)) {
6499 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
6502 /* In normal circumstances 'm' will not be NULL. However,
6503 * if mirrors are reconfigured, we can temporarily get out
6504 * of sync in facet_revalidate(). We could "correct" the
6505 * mirror list before reaching here, but doing that would
6506 * not properly account the traffic stats we've currently
6507 * accumulated for previous mirror configuration. */
6511 m
->packet_count
+= packets
;
6512 m
->byte_count
+= bytes
;
6516 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
6517 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
6518 * indicate this; newer upstream kernels use gratuitous ARP requests. */
6520 is_gratuitous_arp(const struct flow
*flow
)
6522 return (flow
->dl_type
== htons(ETH_TYPE_ARP
)
6523 && eth_addr_is_broadcast(flow
->dl_dst
)
6524 && (flow
->nw_proto
== ARP_OP_REPLY
6525 || (flow
->nw_proto
== ARP_OP_REQUEST
6526 && flow
->nw_src
== flow
->nw_dst
)));
6530 update_learning_table(struct ofproto_dpif
*ofproto
,
6531 const struct flow
*flow
, int vlan
,
6532 struct ofbundle
*in_bundle
)
6534 struct mac_entry
*mac
;
6536 /* Don't learn the OFPP_NONE port. */
6537 if (in_bundle
== &ofpp_none_bundle
) {
6541 if (!mac_learning_may_learn(ofproto
->ml
, flow
->dl_src
, vlan
)) {
6545 mac
= mac_learning_insert(ofproto
->ml
, flow
->dl_src
, vlan
);
6546 if (is_gratuitous_arp(flow
)) {
6547 /* We don't want to learn from gratuitous ARP packets that are
6548 * reflected back over bond slaves so we lock the learning table. */
6549 if (!in_bundle
->bond
) {
6550 mac_entry_set_grat_arp_lock(mac
);
6551 } else if (mac_entry_is_grat_arp_locked(mac
)) {
6556 if (mac_entry_is_new(mac
) || mac
->port
.p
!= in_bundle
) {
6557 /* The log messages here could actually be useful in debugging,
6558 * so keep the rate limit relatively high. */
6559 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
6560 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
6561 "on port %s in VLAN %d",
6562 ofproto
->up
.name
, ETH_ADDR_ARGS(flow
->dl_src
),
6563 in_bundle
->name
, vlan
);
6565 mac
->port
.p
= in_bundle
;
6566 tag_set_add(&ofproto
->revalidate_set
,
6567 mac_learning_changed(ofproto
->ml
, mac
));
6571 static struct ofbundle
*
6572 lookup_input_bundle(const struct ofproto_dpif
*ofproto
, uint16_t in_port
,
6573 bool warn
, struct ofport_dpif
**in_ofportp
)
6575 struct ofport_dpif
*ofport
;
6577 /* Find the port and bundle for the received packet. */
6578 ofport
= get_ofp_port(ofproto
, in_port
);
6580 *in_ofportp
= ofport
;
6582 if (ofport
&& ofport
->bundle
) {
6583 return ofport
->bundle
;
6586 /* Special-case OFPP_NONE, which a controller may use as the ingress
6587 * port for traffic that it is sourcing. */
6588 if (in_port
== OFPP_NONE
) {
6589 return &ofpp_none_bundle
;
6592 /* Odd. A few possible reasons here:
6594 * - We deleted a port but there are still a few packets queued up
6597 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
6598 * we don't know about.
6600 * - The ofproto client didn't configure the port as part of a bundle.
6601 * This is particularly likely to happen if a packet was received on the
6602 * port after it was created, but before the client had a chance to
6603 * configure its bundle.
6606 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6608 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
6609 "port %"PRIu16
, ofproto
->up
.name
, in_port
);
6614 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
6615 * dropped. Returns true if they may be forwarded, false if they should be
6618 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
6619 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
6621 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
6622 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
6623 * checked by input_vid_is_valid().
6625 * May also add tags to '*tags', although the current implementation only does
6626 * so in one special case.
6629 is_admissible(struct action_xlate_ctx
*ctx
, struct ofport_dpif
*in_port
,
6632 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
6633 struct flow
*flow
= &ctx
->flow
;
6634 struct ofbundle
*in_bundle
= in_port
->bundle
;
6636 /* Drop frames for reserved multicast addresses
6637 * only if forward_bpdu option is absent. */
6638 if (!ofproto
->up
.forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
6639 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
6643 if (in_bundle
->bond
) {
6644 struct mac_entry
*mac
;
6646 switch (bond_check_admissibility(in_bundle
->bond
, in_port
,
6647 flow
->dl_dst
, &ctx
->tags
)) {
6652 xlate_report(ctx
, "bonding refused admissibility, dropping");
6655 case BV_DROP_IF_MOVED
:
6656 mac
= mac_learning_lookup(ofproto
->ml
, flow
->dl_src
, vlan
, NULL
);
6657 if (mac
&& mac
->port
.p
!= in_bundle
&&
6658 (!is_gratuitous_arp(flow
)
6659 || mac_entry_is_grat_arp_locked(mac
))) {
6660 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
6672 xlate_normal(struct action_xlate_ctx
*ctx
)
6674 struct ofport_dpif
*in_port
;
6675 struct ofbundle
*in_bundle
;
6676 struct mac_entry
*mac
;
6680 ctx
->has_normal
= true;
6682 in_bundle
= lookup_input_bundle(ctx
->ofproto
, ctx
->flow
.in_port
,
6683 ctx
->packet
!= NULL
, &in_port
);
6685 xlate_report(ctx
, "no input bundle, dropping");
6689 /* Drop malformed frames. */
6690 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_VLAN
) &&
6691 !(ctx
->flow
.vlan_tci
& htons(VLAN_CFI
))) {
6692 if (ctx
->packet
!= NULL
) {
6693 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6694 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
6695 "VLAN tag received on port %s",
6696 ctx
->ofproto
->up
.name
, in_bundle
->name
);
6698 xlate_report(ctx
, "partial VLAN tag, dropping");
6702 /* Drop frames on bundles reserved for mirroring. */
6703 if (in_bundle
->mirror_out
) {
6704 if (ctx
->packet
!= NULL
) {
6705 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6706 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
6707 "%s, which is reserved exclusively for mirroring",
6708 ctx
->ofproto
->up
.name
, in_bundle
->name
);
6710 xlate_report(ctx
, "input port is mirror output port, dropping");
6715 vid
= vlan_tci_to_vid(ctx
->flow
.vlan_tci
);
6716 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
6717 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
6720 vlan
= input_vid_to_vlan(in_bundle
, vid
);
6722 /* Check other admissibility requirements. */
6723 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
6727 /* Learn source MAC. */
6728 if (ctx
->may_learn
) {
6729 update_learning_table(ctx
->ofproto
, &ctx
->flow
, vlan
, in_bundle
);
6732 /* Determine output bundle. */
6733 mac
= mac_learning_lookup(ctx
->ofproto
->ml
, ctx
->flow
.dl_dst
, vlan
,
6736 if (mac
->port
.p
!= in_bundle
) {
6737 xlate_report(ctx
, "forwarding to learned port");
6738 output_normal(ctx
, mac
->port
.p
, vlan
);
6740 xlate_report(ctx
, "learned port is input port, dropping");
6743 struct ofbundle
*bundle
;
6745 xlate_report(ctx
, "no learned MAC for destination, flooding");
6746 HMAP_FOR_EACH (bundle
, hmap_node
, &ctx
->ofproto
->bundles
) {
6747 if (bundle
!= in_bundle
6748 && ofbundle_includes_vlan(bundle
, vlan
)
6749 && bundle
->floodable
6750 && !bundle
->mirror_out
) {
6751 output_normal(ctx
, bundle
, vlan
);
6754 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
6758 /* Optimized flow revalidation.
6760 * It's a difficult problem, in general, to tell which facets need to have
6761 * their actions recalculated whenever the OpenFlow flow table changes. We
6762 * don't try to solve that general problem: for most kinds of OpenFlow flow
6763 * table changes, we recalculate the actions for every facet. This is
6764 * relatively expensive, but it's good enough if the OpenFlow flow table
6765 * doesn't change very often.
6767 * However, we can expect one particular kind of OpenFlow flow table change to
6768 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
6769 * of CPU on revalidating every facet whenever MAC learning modifies the flow
6770 * table, we add a special case that applies to flow tables in which every rule
6771 * has the same form (that is, the same wildcards), except that the table is
6772 * also allowed to have a single "catch-all" flow that matches all packets. We
6773 * optimize this case by tagging all of the facets that resubmit into the table
6774 * and invalidating the same tag whenever a flow changes in that table. The
6775 * end result is that we revalidate just the facets that need it (and sometimes
6776 * a few more, but not all of the facets or even all of the facets that
6777 * resubmit to the table modified by MAC learning). */
6779 /* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted
6780 * into an OpenFlow table with the given 'basis'. */
6782 rule_calculate_tag(const struct flow
*flow
, const struct minimask
*mask
,
6785 if (minimask_is_catchall(mask
)) {
6788 uint32_t hash
= flow_hash_in_minimask(flow
, mask
, secret
);
6789 return tag_create_deterministic(hash
);
6793 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
6794 * taggability of that table.
6796 * This function must be called after *each* change to a flow table. If you
6797 * skip calling it on some changes then the pointer comparisons at the end can
6798 * be invalid if you get unlucky. For example, if a flow removal causes a
6799 * cls_table to be destroyed and then a flow insertion causes a cls_table with
6800 * different wildcards to be created with the same address, then this function
6801 * will incorrectly skip revalidation. */
6803 table_update_taggable(struct ofproto_dpif
*ofproto
, uint8_t table_id
)
6805 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
6806 const struct oftable
*oftable
= &ofproto
->up
.tables
[table_id
];
6807 struct cls_table
*catchall
, *other
;
6808 struct cls_table
*t
;
6810 catchall
= other
= NULL
;
6812 switch (hmap_count(&oftable
->cls
.tables
)) {
6814 /* We could tag this OpenFlow table but it would make the logic a
6815 * little harder and it's a corner case that doesn't seem worth it
6821 HMAP_FOR_EACH (t
, hmap_node
, &oftable
->cls
.tables
) {
6822 if (cls_table_is_catchall(t
)) {
6824 } else if (!other
) {
6827 /* Indicate that we can't tag this by setting both tables to
6828 * NULL. (We know that 'catchall' is already NULL.) */
6835 /* Can't tag this table. */
6839 if (table
->catchall_table
!= catchall
|| table
->other_table
!= other
) {
6840 table
->catchall_table
= catchall
;
6841 table
->other_table
= other
;
6842 ofproto
->need_revalidate
= REV_FLOW_TABLE
;
6846 /* Given 'rule' that has changed in some way (either it is a rule being
6847 * inserted, a rule being deleted, or a rule whose actions are being
6848 * modified), marks facets for revalidation to ensure that packets will be
6849 * forwarded correctly according to the new state of the flow table.
6851 * This function must be called after *each* change to a flow table. See
6852 * the comment on table_update_taggable() for more information. */
6854 rule_invalidate(const struct rule_dpif
*rule
)
6856 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
6858 table_update_taggable(ofproto
, rule
->up
.table_id
);
6860 if (!ofproto
->need_revalidate
) {
6861 struct table_dpif
*table
= &ofproto
->tables
[rule
->up
.table_id
];
6863 if (table
->other_table
&& rule
->tag
) {
6864 tag_set_add(&ofproto
->revalidate_set
, rule
->tag
);
6866 ofproto
->need_revalidate
= REV_FLOW_TABLE
;
6872 set_frag_handling(struct ofproto
*ofproto_
,
6873 enum ofp_config_flags frag_handling
)
6875 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6877 if (frag_handling
!= OFPC_FRAG_REASM
) {
6878 ofproto
->need_revalidate
= REV_RECONFIGURE
;
6886 packet_out(struct ofproto
*ofproto_
, struct ofpbuf
*packet
,
6887 const struct flow
*flow
,
6888 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
6890 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6891 struct odputil_keybuf keybuf
;
6892 struct dpif_flow_stats stats
;
6896 struct action_xlate_ctx ctx
;
6897 uint64_t odp_actions_stub
[1024 / 8];
6898 struct ofpbuf odp_actions
;
6900 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
6901 odp_flow_key_from_flow(&key
, flow
,
6902 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
6904 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
6906 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
, NULL
,
6907 packet_get_tcp_flags(packet
, flow
), packet
);
6908 ctx
.resubmit_stats
= &stats
;
6910 ofpbuf_use_stub(&odp_actions
,
6911 odp_actions_stub
, sizeof odp_actions_stub
);
6912 xlate_actions(&ctx
, ofpacts
, ofpacts_len
, &odp_actions
);
6913 dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
6914 odp_actions
.data
, odp_actions
.size
, packet
);
6915 ofpbuf_uninit(&odp_actions
);
6923 set_netflow(struct ofproto
*ofproto_
,
6924 const struct netflow_options
*netflow_options
)
6926 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6928 if (netflow_options
) {
6929 if (!ofproto
->netflow
) {
6930 ofproto
->netflow
= netflow_create();
6932 return netflow_set_options(ofproto
->netflow
, netflow_options
);
6934 netflow_destroy(ofproto
->netflow
);
6935 ofproto
->netflow
= NULL
;
6941 get_netflow_ids(const struct ofproto
*ofproto_
,
6942 uint8_t *engine_type
, uint8_t *engine_id
)
6944 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6946 dpif_get_netflow_ids(ofproto
->backer
->dpif
, engine_type
, engine_id
);
6950 send_active_timeout(struct ofproto_dpif
*ofproto
, struct facet
*facet
)
6952 if (!facet_is_controller_flow(facet
) &&
6953 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
6954 struct subfacet
*subfacet
;
6955 struct ofexpired expired
;
6957 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
6958 if (subfacet
->path
== SF_FAST_PATH
) {
6959 struct dpif_flow_stats stats
;
6961 subfacet_reinstall(subfacet
, &stats
);
6962 subfacet_update_stats(subfacet
, &stats
);
6966 expired
.flow
= facet
->flow
;
6967 expired
.packet_count
= facet
->packet_count
;
6968 expired
.byte_count
= facet
->byte_count
;
6969 expired
.used
= facet
->used
;
6970 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
6975 send_netflow_active_timeouts(struct ofproto_dpif
*ofproto
)
6977 struct facet
*facet
;
6979 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
6980 send_active_timeout(ofproto
, facet
);
6984 static struct ofproto_dpif
*
6985 ofproto_dpif_lookup(const char *name
)
6987 struct ofproto_dpif
*ofproto
;
6989 HMAP_FOR_EACH_WITH_HASH (ofproto
, all_ofproto_dpifs_node
,
6990 hash_string(name
, 0), &all_ofproto_dpifs
) {
6991 if (!strcmp(ofproto
->up
.name
, name
)) {
6999 ofproto_unixctl_fdb_flush(struct unixctl_conn
*conn
, int argc
,
7000 const char *argv
[], void *aux OVS_UNUSED
)
7002 struct ofproto_dpif
*ofproto
;
7005 ofproto
= ofproto_dpif_lookup(argv
[1]);
7007 unixctl_command_reply_error(conn
, "no such bridge");
7010 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
7012 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
7013 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
7017 unixctl_command_reply(conn
, "table successfully flushed");
7021 ofproto_unixctl_fdb_show(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
7022 const char *argv
[], void *aux OVS_UNUSED
)
7024 struct ds ds
= DS_EMPTY_INITIALIZER
;
7025 const struct ofproto_dpif
*ofproto
;
7026 const struct mac_entry
*e
;
7028 ofproto
= ofproto_dpif_lookup(argv
[1]);
7030 unixctl_command_reply_error(conn
, "no such bridge");
7034 ds_put_cstr(&ds
, " port VLAN MAC Age\n");
7035 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
7036 struct ofbundle
*bundle
= e
->port
.p
;
7037 ds_put_format(&ds
, "%5d %4d "ETH_ADDR_FMT
" %3d\n",
7038 ofbundle_get_a_port(bundle
)->odp_port
,
7039 e
->vlan
, ETH_ADDR_ARGS(e
->mac
),
7040 mac_entry_age(ofproto
->ml
, e
));
7042 unixctl_command_reply(conn
, ds_cstr(&ds
));
7047 struct action_xlate_ctx ctx
;
7053 trace_format_rule(struct ds
*result
, uint8_t table_id
, int level
,
7054 const struct rule_dpif
*rule
)
7056 ds_put_char_multiple(result
, '\t', level
);
7058 ds_put_cstr(result
, "No match\n");
7062 ds_put_format(result
, "Rule: table=%"PRIu8
" cookie=%#"PRIx64
" ",
7063 table_id
, ntohll(rule
->up
.flow_cookie
));
7064 cls_rule_format(&rule
->up
.cr
, result
);
7065 ds_put_char(result
, '\n');
7067 ds_put_char_multiple(result
, '\t', level
);
7068 ds_put_cstr(result
, "OpenFlow ");
7069 ofpacts_format(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, result
);
7070 ds_put_char(result
, '\n');
7074 trace_format_flow(struct ds
*result
, int level
, const char *title
,
7075 struct trace_ctx
*trace
)
7077 ds_put_char_multiple(result
, '\t', level
);
7078 ds_put_format(result
, "%s: ", title
);
7079 if (flow_equal(&trace
->ctx
.flow
, &trace
->flow
)) {
7080 ds_put_cstr(result
, "unchanged");
7082 flow_format(result
, &trace
->ctx
.flow
);
7083 trace
->flow
= trace
->ctx
.flow
;
7085 ds_put_char(result
, '\n');
7089 trace_format_regs(struct ds
*result
, int level
, const char *title
,
7090 struct trace_ctx
*trace
)
7094 ds_put_char_multiple(result
, '\t', level
);
7095 ds_put_format(result
, "%s:", title
);
7096 for (i
= 0; i
< FLOW_N_REGS
; i
++) {
7097 ds_put_format(result
, " reg%zu=0x%"PRIx32
, i
, trace
->flow
.regs
[i
]);
7099 ds_put_char(result
, '\n');
7103 trace_format_odp(struct ds
*result
, int level
, const char *title
,
7104 struct trace_ctx
*trace
)
7106 struct ofpbuf
*odp_actions
= trace
->ctx
.odp_actions
;
7108 ds_put_char_multiple(result
, '\t', level
);
7109 ds_put_format(result
, "%s: ", title
);
7110 format_odp_actions(result
, odp_actions
->data
, odp_actions
->size
);
7111 ds_put_char(result
, '\n');
7115 trace_resubmit(struct action_xlate_ctx
*ctx
, struct rule_dpif
*rule
)
7117 struct trace_ctx
*trace
= CONTAINER_OF(ctx
, struct trace_ctx
, ctx
);
7118 struct ds
*result
= trace
->result
;
7120 ds_put_char(result
, '\n');
7121 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
7122 trace_format_regs(result
, ctx
->recurse
+ 1, "Resubmitted regs", trace
);
7123 trace_format_odp(result
, ctx
->recurse
+ 1, "Resubmitted odp", trace
);
7124 trace_format_rule(result
, ctx
->table_id
, ctx
->recurse
+ 1, rule
);
7128 trace_report(struct action_xlate_ctx
*ctx
, const char *s
)
7130 struct trace_ctx
*trace
= CONTAINER_OF(ctx
, struct trace_ctx
, ctx
);
7131 struct ds
*result
= trace
->result
;
7133 ds_put_char_multiple(result
, '\t', ctx
->recurse
);
7134 ds_put_cstr(result
, s
);
7135 ds_put_char(result
, '\n');
7139 ofproto_unixctl_trace(struct unixctl_conn
*conn
, int argc
, const char *argv
[],
7140 void *aux OVS_UNUSED
)
7142 const char *dpname
= argv
[1];
7143 struct ofproto_dpif
*ofproto
;
7144 struct ofpbuf odp_key
;
7145 struct ofpbuf
*packet
;
7146 ovs_be16 initial_tci
;
7152 ofpbuf_init(&odp_key
, 0);
7155 ofproto
= ofproto_dpif_lookup(dpname
);
7157 unixctl_command_reply_error(conn
, "Unknown ofproto (use ofproto/list "
7161 if (argc
== 3 || (argc
== 4 && !strcmp(argv
[3], "-generate"))) {
7162 /* ofproto/trace dpname flow [-generate] */
7163 const char *flow_s
= argv
[2];
7164 const char *generate_s
= argv
[3];
7166 /* Allow 'flow_s' to be either a datapath flow or an OpenFlow-like
7167 * flow. We guess which type it is based on whether 'flow_s' contains
7168 * an '(', since a datapath flow always contains '(') but an
7169 * OpenFlow-like flow should not (in fact it's allowed but I believe
7170 * that's not documented anywhere).
7172 * An alternative would be to try to parse 'flow_s' both ways, but then
7173 * it would be tricky giving a sensible error message. After all, do
7174 * you just say "syntax error" or do you present both error messages?
7175 * Both choices seem lousy. */
7176 if (strchr(flow_s
, '(')) {
7177 enum odp_key_fitness fitness
;
7180 /* Convert string to datapath key. */
7181 ofpbuf_init(&odp_key
, 0);
7182 error
= odp_flow_key_from_string(flow_s
, NULL
, &odp_key
);
7184 unixctl_command_reply_error(conn
, "Bad flow syntax");
7188 fitness
= odp_flow_key_to_flow(odp_key
.data
, odp_key
.size
, &flow
);
7189 flow
.in_port
= odp_port_to_ofp_port(ofproto
, flow
.in_port
);
7191 /* Convert odp_key to flow. */
7192 error
= ofproto_dpif_vsp_adjust(ofproto
, fitness
, &flow
,
7193 &initial_tci
, NULL
);
7194 if (error
== ODP_FIT_ERROR
) {
7195 unixctl_command_reply_error(conn
, "Invalid flow");
7201 error_s
= parse_ofp_exact_flow(&flow
, argv
[2]);
7203 unixctl_command_reply_error(conn
, error_s
);
7208 initial_tci
= flow
.vlan_tci
;
7209 vsp_adjust_flow(ofproto
, &flow
);
7212 /* Generate a packet, if requested. */
7214 packet
= ofpbuf_new(0);
7215 flow_compose(packet
, &flow
);
7217 } else if (argc
== 7) {
7218 /* ofproto/trace dpname priority tun_id in_port mark packet */
7219 const char *priority_s
= argv
[2];
7220 const char *tun_id_s
= argv
[3];
7221 const char *in_port_s
= argv
[4];
7222 const char *mark_s
= argv
[5];
7223 const char *packet_s
= argv
[6];
7224 uint32_t in_port
= atoi(in_port_s
);
7225 ovs_be64 tun_id
= htonll(strtoull(tun_id_s
, NULL
, 0));
7226 uint32_t priority
= atoi(priority_s
);
7227 uint32_t mark
= atoi(mark_s
);
7230 msg
= eth_from_hex(packet_s
, &packet
);
7232 unixctl_command_reply_error(conn
, msg
);
7236 ds_put_cstr(&result
, "Packet: ");
7237 s
= ofp_packet_to_string(packet
->data
, packet
->size
);
7238 ds_put_cstr(&result
, s
);
7241 flow_extract(packet
, priority
, mark
, NULL
, in_port
, &flow
);
7242 flow
.tunnel
.tun_id
= tun_id
;
7243 initial_tci
= flow
.vlan_tci
;
7245 unixctl_command_reply_error(conn
, "Bad command syntax");
7249 ofproto_trace(ofproto
, &flow
, packet
, initial_tci
, &result
);
7250 unixctl_command_reply(conn
, ds_cstr(&result
));
7253 ds_destroy(&result
);
7254 ofpbuf_delete(packet
);
7255 ofpbuf_uninit(&odp_key
);
7259 ofproto_trace(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
7260 const struct ofpbuf
*packet
, ovs_be16 initial_tci
,
7263 struct rule_dpif
*rule
;
7265 ds_put_cstr(ds
, "Flow: ");
7266 flow_format(ds
, flow
);
7267 ds_put_char(ds
, '\n');
7269 rule
= rule_dpif_lookup(ofproto
, flow
);
7271 trace_format_rule(ds
, 0, 0, rule
);
7272 if (rule
== ofproto
->miss_rule
) {
7273 ds_put_cstr(ds
, "\nNo match, flow generates \"packet in\"s.\n");
7274 } else if (rule
== ofproto
->no_packet_in_rule
) {
7275 ds_put_cstr(ds
, "\nNo match, packets dropped because "
7276 "OFPPC_NO_PACKET_IN is set on in_port.\n");
7280 uint64_t odp_actions_stub
[1024 / 8];
7281 struct ofpbuf odp_actions
;
7283 struct trace_ctx trace
;
7286 tcp_flags
= packet
? packet_get_tcp_flags(packet
, flow
) : 0;
7289 ofpbuf_use_stub(&odp_actions
,
7290 odp_actions_stub
, sizeof odp_actions_stub
);
7291 action_xlate_ctx_init(&trace
.ctx
, ofproto
, flow
, initial_tci
,
7292 rule
, tcp_flags
, packet
);
7293 trace
.ctx
.resubmit_hook
= trace_resubmit
;
7294 trace
.ctx
.report_hook
= trace_report
;
7295 xlate_actions(&trace
.ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
7298 ds_put_char(ds
, '\n');
7299 trace_format_flow(ds
, 0, "Final flow", &trace
);
7300 ds_put_cstr(ds
, "Datapath actions: ");
7301 format_odp_actions(ds
, odp_actions
.data
, odp_actions
.size
);
7302 ofpbuf_uninit(&odp_actions
);
7304 if (trace
.ctx
.slow
) {
7305 enum slow_path_reason slow
;
7307 ds_put_cstr(ds
, "\nThis flow is handled by the userspace "
7308 "slow path because it:");
7309 for (slow
= trace
.ctx
.slow
; slow
; ) {
7310 enum slow_path_reason bit
= rightmost_1bit(slow
);
7314 ds_put_cstr(ds
, "\n\t- Consists of CFM packets.");
7317 ds_put_cstr(ds
, "\n\t- Consists of LACP packets.");
7320 ds_put_cstr(ds
, "\n\t- Consists of STP packets.");
7323 ds_put_cstr(ds
, "\n\t- Needs in-band special case "
7326 ds_put_cstr(ds
, "\n\t (The datapath actions are "
7327 "incomplete--for complete actions, "
7328 "please supply a packet.)");
7331 case SLOW_CONTROLLER
:
7332 ds_put_cstr(ds
, "\n\t- Sends \"packet-in\" messages "
7333 "to the OpenFlow controller.");
7336 ds_put_cstr(ds
, "\n\t- Needs more specific matching "
7337 "than the datapath supports.");
7344 if (slow
& ~SLOW_MATCH
) {
7345 ds_put_cstr(ds
, "\nThe datapath actions above do not reflect "
7346 "the special slow-path processing.");
7353 ofproto_dpif_clog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
7354 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
7357 unixctl_command_reply(conn
, NULL
);
7361 ofproto_dpif_unclog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
7362 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
7365 unixctl_command_reply(conn
, NULL
);
7368 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
7369 * 'reply' describing the results. */
7371 ofproto_dpif_self_check__(struct ofproto_dpif
*ofproto
, struct ds
*reply
)
7373 struct facet
*facet
;
7377 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
7378 if (!facet_check_consistency(facet
)) {
7383 ofproto
->need_revalidate
= REV_INCONSISTENCY
;
7387 ds_put_format(reply
, "%s: self-check failed (%d errors)\n",
7388 ofproto
->up
.name
, errors
);
7390 ds_put_format(reply
, "%s: self-check passed\n", ofproto
->up
.name
);
7395 ofproto_dpif_self_check(struct unixctl_conn
*conn
,
7396 int argc
, const char *argv
[], void *aux OVS_UNUSED
)
7398 struct ds reply
= DS_EMPTY_INITIALIZER
;
7399 struct ofproto_dpif
*ofproto
;
7402 ofproto
= ofproto_dpif_lookup(argv
[1]);
7404 unixctl_command_reply_error(conn
, "Unknown ofproto (use "
7405 "ofproto/list for help)");
7408 ofproto_dpif_self_check__(ofproto
, &reply
);
7410 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
7411 ofproto_dpif_self_check__(ofproto
, &reply
);
7415 unixctl_command_reply(conn
, ds_cstr(&reply
));
7419 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
7420 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
7421 * to destroy 'ofproto_shash' and free the returned value. */
7422 static const struct shash_node
**
7423 get_ofprotos(struct shash
*ofproto_shash
)
7425 const struct ofproto_dpif
*ofproto
;
7427 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
7428 char *name
= xasprintf("%s@%s", ofproto
->up
.type
, ofproto
->up
.name
);
7429 shash_add_nocopy(ofproto_shash
, name
, ofproto
);
7432 return shash_sort(ofproto_shash
);
7436 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
7437 const char *argv
[] OVS_UNUSED
,
7438 void *aux OVS_UNUSED
)
7440 struct ds ds
= DS_EMPTY_INITIALIZER
;
7441 struct shash ofproto_shash
;
7442 const struct shash_node
**sorted_ofprotos
;
7445 shash_init(&ofproto_shash
);
7446 sorted_ofprotos
= get_ofprotos(&ofproto_shash
);
7447 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
7448 const struct shash_node
*node
= sorted_ofprotos
[i
];
7449 ds_put_format(&ds
, "%s\n", node
->name
);
7452 shash_destroy(&ofproto_shash
);
7453 free(sorted_ofprotos
);
7455 unixctl_command_reply(conn
, ds_cstr(&ds
));
7460 show_dp_format(const struct ofproto_dpif
*ofproto
, struct ds
*ds
)
7462 struct dpif_dp_stats s
;
7463 const struct shash_node
**ports
;
7466 dpif_get_dp_stats(ofproto
->backer
->dpif
, &s
);
7468 ds_put_format(ds
, "%s (%s):\n", ofproto
->up
.name
,
7469 dpif_name(ofproto
->backer
->dpif
));
7470 /* xxx It would be better to show bridge-specific stats instead
7471 * xxx of dp ones. */
7473 "\tlookups: hit:%"PRIu64
" missed:%"PRIu64
" lost:%"PRIu64
"\n",
7474 s
.n_hit
, s
.n_missed
, s
.n_lost
);
7475 ds_put_format(ds
, "\tflows: %zu\n",
7476 hmap_count(&ofproto
->subfacets
));
7478 ports
= shash_sort(&ofproto
->up
.port_by_name
);
7479 for (i
= 0; i
< shash_count(&ofproto
->up
.port_by_name
); i
++) {
7480 const struct shash_node
*node
= ports
[i
];
7481 struct ofport
*ofport
= node
->data
;
7482 const char *name
= netdev_get_name(ofport
->netdev
);
7483 const char *type
= netdev_get_type(ofport
->netdev
);
7485 ds_put_format(ds
, "\t%s %u/%u:", name
, ofport
->ofp_port
,
7486 ofp_port_to_odp_port(ofproto
, ofport
->ofp_port
));
7487 if (strcmp(type
, "system")) {
7488 struct netdev
*netdev
;
7491 ds_put_format(ds
, " (%s", type
);
7493 error
= netdev_open(name
, type
, &netdev
);
7498 error
= netdev_get_config(netdev
, &config
);
7500 const struct smap_node
**nodes
;
7503 nodes
= smap_sort(&config
);
7504 for (i
= 0; i
< smap_count(&config
); i
++) {
7505 const struct smap_node
*node
= nodes
[i
];
7506 ds_put_format(ds
, "%c %s=%s", i
? ',' : ':',
7507 node
->key
, node
->value
);
7511 smap_destroy(&config
);
7513 netdev_close(netdev
);
7515 ds_put_char(ds
, ')');
7517 ds_put_char(ds
, '\n');
7523 ofproto_unixctl_dpif_show(struct unixctl_conn
*conn
, int argc
,
7524 const char *argv
[], void *aux OVS_UNUSED
)
7526 struct ds ds
= DS_EMPTY_INITIALIZER
;
7527 const struct ofproto_dpif
*ofproto
;
7531 for (i
= 1; i
< argc
; i
++) {
7532 ofproto
= ofproto_dpif_lookup(argv
[i
]);
7534 ds_put_format(&ds
, "Unknown bridge %s (use dpif/dump-dps "
7535 "for help)", argv
[i
]);
7536 unixctl_command_reply_error(conn
, ds_cstr(&ds
));
7539 show_dp_format(ofproto
, &ds
);
7542 struct shash ofproto_shash
;
7543 const struct shash_node
**sorted_ofprotos
;
7546 shash_init(&ofproto_shash
);
7547 sorted_ofprotos
= get_ofprotos(&ofproto_shash
);
7548 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
7549 const struct shash_node
*node
= sorted_ofprotos
[i
];
7550 show_dp_format(node
->data
, &ds
);
7553 shash_destroy(&ofproto_shash
);
7554 free(sorted_ofprotos
);
7557 unixctl_command_reply(conn
, ds_cstr(&ds
));
7562 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn
*conn
,
7563 int argc OVS_UNUSED
, const char *argv
[],
7564 void *aux OVS_UNUSED
)
7566 struct ds ds
= DS_EMPTY_INITIALIZER
;
7567 const struct ofproto_dpif
*ofproto
;
7568 struct subfacet
*subfacet
;
7570 ofproto
= ofproto_dpif_lookup(argv
[1]);
7572 unixctl_command_reply_error(conn
, "no such bridge");
7576 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->subfacets
) {
7577 struct odputil_keybuf keybuf
;
7580 subfacet_get_key(subfacet
, &keybuf
, &key
);
7581 odp_flow_key_format(key
.data
, key
.size
, &ds
);
7583 ds_put_format(&ds
, ", packets:%"PRIu64
", bytes:%"PRIu64
", used:",
7584 subfacet
->dp_packet_count
, subfacet
->dp_byte_count
);
7585 if (subfacet
->used
) {
7586 ds_put_format(&ds
, "%.3fs",
7587 (time_msec() - subfacet
->used
) / 1000.0);
7589 ds_put_format(&ds
, "never");
7591 if (subfacet
->facet
->tcp_flags
) {
7592 ds_put_cstr(&ds
, ", flags:");
7593 packet_format_tcp_flags(&ds
, subfacet
->facet
->tcp_flags
);
7596 ds_put_cstr(&ds
, ", actions:");
7597 format_odp_actions(&ds
, subfacet
->actions
, subfacet
->actions_len
);
7598 ds_put_char(&ds
, '\n');
7601 unixctl_command_reply(conn
, ds_cstr(&ds
));
7606 ofproto_unixctl_dpif_del_flows(struct unixctl_conn
*conn
,
7607 int argc OVS_UNUSED
, const char *argv
[],
7608 void *aux OVS_UNUSED
)
7610 struct ds ds
= DS_EMPTY_INITIALIZER
;
7611 struct ofproto_dpif
*ofproto
;
7613 ofproto
= ofproto_dpif_lookup(argv
[1]);
7615 unixctl_command_reply_error(conn
, "no such bridge");
7619 flush(&ofproto
->up
);
7621 unixctl_command_reply(conn
, ds_cstr(&ds
));
7626 ofproto_dpif_unixctl_init(void)
7628 static bool registered
;
7634 unixctl_command_register(
7636 "bridge {priority tun_id in_port mark packet | odp_flow [-generate]}",
7637 2, 6, ofproto_unixctl_trace
, NULL
);
7638 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
7639 ofproto_unixctl_fdb_flush
, NULL
);
7640 unixctl_command_register("fdb/show", "bridge", 1, 1,
7641 ofproto_unixctl_fdb_show
, NULL
);
7642 unixctl_command_register("ofproto/clog", "", 0, 0,
7643 ofproto_dpif_clog
, NULL
);
7644 unixctl_command_register("ofproto/unclog", "", 0, 0,
7645 ofproto_dpif_unclog
, NULL
);
7646 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
7647 ofproto_dpif_self_check
, NULL
);
7648 unixctl_command_register("dpif/dump-dps", "", 0, 0,
7649 ofproto_unixctl_dpif_dump_dps
, NULL
);
7650 unixctl_command_register("dpif/show", "[bridge]", 0, INT_MAX
,
7651 ofproto_unixctl_dpif_show
, NULL
);
7652 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
7653 ofproto_unixctl_dpif_dump_flows
, NULL
);
7654 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
7655 ofproto_unixctl_dpif_del_flows
, NULL
);
7658 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
7660 * This is deprecated. It is only for compatibility with broken device drivers
7661 * in old versions of Linux that do not properly support VLANs when VLAN
7662 * devices are not used. When broken device drivers are no longer in
7663 * widespread use, we will delete these interfaces. */
7666 set_realdev(struct ofport
*ofport_
, uint16_t realdev_ofp_port
, int vid
)
7668 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport_
->ofproto
);
7669 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
7671 if (realdev_ofp_port
== ofport
->realdev_ofp_port
7672 && vid
== ofport
->vlandev_vid
) {
7676 ofproto
->need_revalidate
= REV_RECONFIGURE
;
7678 if (ofport
->realdev_ofp_port
) {
7681 if (realdev_ofp_port
&& ofport
->bundle
) {
7682 /* vlandevs are enslaved to their realdevs, so they are not allowed to
7683 * themselves be part of a bundle. */
7684 bundle_set(ofport
->up
.ofproto
, ofport
->bundle
, NULL
);
7687 ofport
->realdev_ofp_port
= realdev_ofp_port
;
7688 ofport
->vlandev_vid
= vid
;
7690 if (realdev_ofp_port
) {
7691 vsp_add(ofport
, realdev_ofp_port
, vid
);
7698 hash_realdev_vid(uint16_t realdev_ofp_port
, int vid
)
7700 return hash_2words(realdev_ofp_port
, vid
);
7703 /* Returns the ODP port number of the Linux VLAN device that corresponds to
7704 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
7705 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
7706 * it would return the port number of eth0.9.
7708 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
7709 * function just returns its 'realdev_odp_port' argument. */
7711 vsp_realdev_to_vlandev(const struct ofproto_dpif
*ofproto
,
7712 uint32_t realdev_odp_port
, ovs_be16 vlan_tci
)
7714 if (!hmap_is_empty(&ofproto
->realdev_vid_map
)) {
7715 uint16_t realdev_ofp_port
;
7716 int vid
= vlan_tci_to_vid(vlan_tci
);
7717 const struct vlan_splinter
*vsp
;
7719 realdev_ofp_port
= odp_port_to_ofp_port(ofproto
, realdev_odp_port
);
7720 HMAP_FOR_EACH_WITH_HASH (vsp
, realdev_vid_node
,
7721 hash_realdev_vid(realdev_ofp_port
, vid
),
7722 &ofproto
->realdev_vid_map
) {
7723 if (vsp
->realdev_ofp_port
== realdev_ofp_port
7724 && vsp
->vid
== vid
) {
7725 return ofp_port_to_odp_port(ofproto
, vsp
->vlandev_ofp_port
);
7729 return realdev_odp_port
;
7732 static struct vlan_splinter
*
7733 vlandev_find(const struct ofproto_dpif
*ofproto
, uint16_t vlandev_ofp_port
)
7735 struct vlan_splinter
*vsp
;
7737 HMAP_FOR_EACH_WITH_HASH (vsp
, vlandev_node
, hash_int(vlandev_ofp_port
, 0),
7738 &ofproto
->vlandev_map
) {
7739 if (vsp
->vlandev_ofp_port
== vlandev_ofp_port
) {
7747 /* Returns the OpenFlow port number of the "real" device underlying the Linux
7748 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
7749 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
7750 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
7751 * eth0 and store 9 in '*vid'.
7753 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
7754 * VLAN device. Unless VLAN splinters are enabled, this is what this function
7757 vsp_vlandev_to_realdev(const struct ofproto_dpif
*ofproto
,
7758 uint16_t vlandev_ofp_port
, int *vid
)
7760 if (!hmap_is_empty(&ofproto
->vlandev_map
)) {
7761 const struct vlan_splinter
*vsp
;
7763 vsp
= vlandev_find(ofproto
, vlandev_ofp_port
);
7768 return vsp
->realdev_ofp_port
;
7774 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
7775 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
7776 * 'flow->in_port' to the "real" device backing the VLAN device, sets
7777 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
7778 * always the case unless VLAN splinters are enabled), returns false without
7779 * making any changes. */
7781 vsp_adjust_flow(const struct ofproto_dpif
*ofproto
, struct flow
*flow
)
7786 realdev
= vsp_vlandev_to_realdev(ofproto
, flow
->in_port
, &vid
);
7791 /* Cause the flow to be processed as if it came in on the real device with
7792 * the VLAN device's VLAN ID. */
7793 flow
->in_port
= realdev
;
7794 flow
->vlan_tci
= htons((vid
& VLAN_VID_MASK
) | VLAN_CFI
);
7799 vsp_remove(struct ofport_dpif
*port
)
7801 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
7802 struct vlan_splinter
*vsp
;
7804 vsp
= vlandev_find(ofproto
, port
->up
.ofp_port
);
7806 hmap_remove(&ofproto
->vlandev_map
, &vsp
->vlandev_node
);
7807 hmap_remove(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
);
7810 port
->realdev_ofp_port
= 0;
7812 VLOG_ERR("missing vlan device record");
7817 vsp_add(struct ofport_dpif
*port
, uint16_t realdev_ofp_port
, int vid
)
7819 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
7821 if (!vsp_vlandev_to_realdev(ofproto
, port
->up
.ofp_port
, NULL
)
7822 && (vsp_realdev_to_vlandev(ofproto
, realdev_ofp_port
, htons(vid
))
7823 == realdev_ofp_port
)) {
7824 struct vlan_splinter
*vsp
;
7826 vsp
= xmalloc(sizeof *vsp
);
7827 hmap_insert(&ofproto
->vlandev_map
, &vsp
->vlandev_node
,
7828 hash_int(port
->up
.ofp_port
, 0));
7829 hmap_insert(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
,
7830 hash_realdev_vid(realdev_ofp_port
, vid
));
7831 vsp
->realdev_ofp_port
= realdev_ofp_port
;
7832 vsp
->vlandev_ofp_port
= port
->up
.ofp_port
;
7835 port
->realdev_ofp_port
= realdev_ofp_port
;
7837 VLOG_ERR("duplicate vlan device record");
7842 ofp_port_to_odp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
7844 const struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
7845 return ofport
? ofport
->odp_port
: OVSP_NONE
;
7848 static struct ofport_dpif
*
7849 odp_port_to_ofport(const struct dpif_backer
*backer
, uint32_t odp_port
)
7851 struct ofport_dpif
*port
;
7853 HMAP_FOR_EACH_IN_BUCKET (port
, odp_port_node
,
7854 hash_int(odp_port
, 0),
7855 &backer
->odp_to_ofport_map
) {
7856 if (port
->odp_port
== odp_port
) {
7865 odp_port_to_ofp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
7867 struct ofport_dpif
*port
;
7869 port
= odp_port_to_ofport(ofproto
->backer
, odp_port
);
7870 if (port
&& ofproto
== ofproto_dpif_cast(port
->up
.ofproto
)) {
7871 return port
->up
.ofp_port
;
7877 const struct ofproto_class ofproto_dpif_class
= {
7912 port_is_lacp_current
,
7913 NULL
, /* rule_choose_table */
7920 rule_modify_actions
,
7929 get_cfm_remote_mpids
,
7934 get_stp_port_status
,
7941 is_mirror_output_bundle
,
7942 forward_bpdu_changed
,