2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofproto/ofproto-provider.h"
25 #include "byte-order.h"
30 #include "dynamic-string.h"
31 #include "fail-open.h"
35 #include "mac-learning.h"
36 #include "meta-flow.h"
37 #include "multipath.h"
38 #include "netdev-vport.h"
45 #include "ofp-actions.h"
46 #include "ofp-parse.h"
47 #include "ofp-print.h"
48 #include "ofproto-dpif-governor.h"
49 #include "ofproto-dpif-sflow.h"
50 #include "poll-loop.h"
55 #include "unaligned.h"
57 #include "vlan-bitmap.h"
60 VLOG_DEFINE_THIS_MODULE(ofproto_dpif
);
62 COVERAGE_DEFINE(ofproto_dpif_expired
);
63 COVERAGE_DEFINE(ofproto_dpif_xlate
);
64 COVERAGE_DEFINE(facet_changed_rule
);
65 COVERAGE_DEFINE(facet_revalidate
);
66 COVERAGE_DEFINE(facet_unexpected
);
67 COVERAGE_DEFINE(facet_suppress
);
69 /* Maximum depth of flow table recursion (due to resubmit actions) in a
70 * flow translation. */
71 #define MAX_RESUBMIT_RECURSION 64
73 /* Number of implemented OpenFlow tables. */
74 enum { N_TABLES
= 255 };
75 enum { TBL_INTERNAL
= N_TABLES
- 1 }; /* Used for internal hidden rules. */
76 BUILD_ASSERT_DECL(N_TABLES
>= 2 && N_TABLES
<= 255);
88 * - Do include packets and bytes from facets that have been deleted or
89 * whose own statistics have been folded into the rule.
91 * - Do include packets and bytes sent "by hand" that were accounted to
92 * the rule without any facet being involved (this is a rare corner
93 * case in rule_execute()).
95 * - Do not include packet or bytes that can be obtained from any facet's
96 * packet_count or byte_count member or that can be obtained from the
97 * datapath by, e.g., dpif_flow_get() for any subfacet.
99 uint64_t packet_count
; /* Number of packets received. */
100 uint64_t byte_count
; /* Number of bytes received. */
102 tag_type tag
; /* Caches rule_calculate_tag() result. */
104 struct list facets
; /* List of "struct facet"s. */
107 static struct rule_dpif
*rule_dpif_cast(const struct rule
*rule
)
109 return rule
? CONTAINER_OF(rule
, struct rule_dpif
, up
) : NULL
;
112 static struct rule_dpif
*rule_dpif_lookup(struct ofproto_dpif
*,
113 const struct flow
*);
114 static struct rule_dpif
*rule_dpif_lookup__(struct ofproto_dpif
*,
117 static struct rule_dpif
*rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
,
118 const struct flow
*flow
);
120 static void rule_credit_stats(struct rule_dpif
*,
121 const struct dpif_flow_stats
*);
122 static void flow_push_stats(struct facet
*, const struct dpif_flow_stats
*);
123 static tag_type
rule_calculate_tag(const struct flow
*,
124 const struct minimask
*, uint32_t basis
);
125 static void rule_invalidate(const struct rule_dpif
*);
127 #define MAX_MIRRORS 32
128 typedef uint32_t mirror_mask_t
;
129 #define MIRROR_MASK_C(X) UINT32_C(X)
130 BUILD_ASSERT_DECL(sizeof(mirror_mask_t
) * CHAR_BIT
>= MAX_MIRRORS
);
132 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
133 size_t idx
; /* In ofproto's "mirrors" array. */
134 void *aux
; /* Key supplied by ofproto's client. */
135 char *name
; /* Identifier for log messages. */
137 /* Selection criteria. */
138 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
139 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
140 unsigned long *vlans
; /* Bitmap of chosen VLANs, NULL selects all. */
142 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
143 struct ofbundle
*out
; /* Output port or NULL. */
144 int out_vlan
; /* Output VLAN or -1. */
145 mirror_mask_t dup_mirrors
; /* Bitmap of mirrors with the same output. */
148 int64_t packet_count
; /* Number of packets sent. */
149 int64_t byte_count
; /* Number of bytes sent. */
152 static void mirror_destroy(struct ofmirror
*);
153 static void update_mirror_stats(struct ofproto_dpif
*ofproto
,
154 mirror_mask_t mirrors
,
155 uint64_t packets
, uint64_t bytes
);
158 struct hmap_node hmap_node
; /* In struct ofproto's "bundles" hmap. */
159 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
160 void *aux
; /* Key supplied by ofproto's client. */
161 char *name
; /* Identifier for log messages. */
164 struct list ports
; /* Contains "struct ofport"s. */
165 enum port_vlan_mode vlan_mode
; /* VLAN mode */
166 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
167 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
168 * NULL if all VLANs are trunked. */
169 struct lacp
*lacp
; /* LACP if LACP is enabled, otherwise NULL. */
170 struct bond
*bond
; /* Nonnull iff more than one port. */
171 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
174 bool floodable
; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
176 /* Port mirroring info. */
177 mirror_mask_t src_mirrors
; /* Mirrors triggered when packet received. */
178 mirror_mask_t dst_mirrors
; /* Mirrors triggered when packet sent. */
179 mirror_mask_t mirror_out
; /* Mirrors that output to this bundle. */
182 static void bundle_remove(struct ofport
*);
183 static void bundle_update(struct ofbundle
*);
184 static void bundle_destroy(struct ofbundle
*);
185 static void bundle_del_port(struct ofport_dpif
*);
186 static void bundle_run(struct ofbundle
*);
187 static void bundle_wait(struct ofbundle
*);
188 static struct ofbundle
*lookup_input_bundle(const struct ofproto_dpif
*,
189 uint16_t in_port
, bool warn
,
190 struct ofport_dpif
**in_ofportp
);
192 /* A controller may use OFPP_NONE as the ingress port to indicate that
193 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
194 * when an input bundle is needed for validation (e.g., mirroring or
195 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
196 * any 'port' structs, so care must be taken when dealing with it. */
197 static struct ofbundle ofpp_none_bundle
= {
199 .vlan_mode
= PORT_VLAN_TRUNK
202 static void stp_run(struct ofproto_dpif
*ofproto
);
203 static void stp_wait(struct ofproto_dpif
*ofproto
);
204 static int set_stp_port(struct ofport
*,
205 const struct ofproto_port_stp_settings
*);
207 static bool ofbundle_includes_vlan(const struct ofbundle
*, uint16_t vlan
);
209 struct action_xlate_ctx
{
210 /* action_xlate_ctx_init() initializes these members. */
213 struct ofproto_dpif
*ofproto
;
215 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
216 * this flow when actions change header fields. */
219 /* stack for the push and pop actions.
220 * Each stack element is of the type "union mf_subvalue". */
222 union mf_subvalue init_stack
[1024 / sizeof(union mf_subvalue
)];
224 /* The packet corresponding to 'flow', or a null pointer if we are
225 * revalidating without a packet to refer to. */
226 const struct ofpbuf
*packet
;
228 /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
229 * actions update the flow table?
231 * We want to update these tables if we are actually processing a packet,
232 * or if we are accounting for packets that the datapath has processed, but
233 * not if we are just revalidating. */
236 /* The rule that we are currently translating, or NULL. */
237 struct rule_dpif
*rule
;
239 /* Union of the set of TCP flags seen so far in this flow. (Used only by
240 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
244 /* If nonnull, flow translation calls this function just before executing a
245 * resubmit or OFPP_TABLE action. In addition, disables logging of traces
246 * when the recursion depth is exceeded.
248 * 'rule' is the rule being submitted into. It will be null if the
249 * resubmit or OFPP_TABLE action didn't find a matching rule.
251 * This is normally null so the client has to set it manually after
252 * calling action_xlate_ctx_init(). */
253 void (*resubmit_hook
)(struct action_xlate_ctx
*, struct rule_dpif
*rule
);
255 /* If nonnull, flow translation calls this function to report some
256 * significant decision, e.g. to explain why OFPP_NORMAL translation
257 * dropped a packet. */
258 void (*report_hook
)(struct action_xlate_ctx
*, const char *s
);
260 /* If nonnull, flow translation credits the specified statistics to each
261 * rule reached through a resubmit or OFPP_TABLE action.
263 * This is normally null so the client has to set it manually after
264 * calling action_xlate_ctx_init(). */
265 const struct dpif_flow_stats
*resubmit_stats
;
267 /* xlate_actions() initializes and uses these members. The client might want
268 * to look at them after it returns. */
270 struct ofpbuf
*odp_actions
; /* Datapath actions. */
271 tag_type tags
; /* Tags associated with actions. */
272 enum slow_path_reason slow
; /* 0 if fast path may be used. */
273 bool has_learn
; /* Actions include NXAST_LEARN? */
274 bool has_normal
; /* Actions output to OFPP_NORMAL? */
275 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
276 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
277 mirror_mask_t mirrors
; /* Bitmap of associated mirrors. */
279 /* xlate_actions() initializes and uses these members, but the client has no
280 * reason to look at them. */
282 int recurse
; /* Recursion level, via xlate_table_action. */
283 bool max_resubmit_trigger
; /* Recursed too deeply during translation. */
284 struct flow base_flow
; /* Flow at the last commit. */
285 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
286 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
287 uint32_t sflow_n_outputs
; /* Number of output ports. */
288 uint32_t sflow_odp_port
; /* Output port for composing sFlow action. */
289 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
290 bool exit
; /* No further actions should be processed. */
293 /* Initial values of fields of the packet that may be changed during
294 * flow processing and needed later. */
295 struct initial_vals
{
296 /* This is the value of vlan_tci in the packet as actually received from
297 * dpif. This is the same as the facet's flow.vlan_tci unless the packet
298 * was received via a VLAN splinter. In that case, this value is 0
299 * (because the packet as actually received from the dpif had no 802.1Q
300 * tag) but the facet's flow.vlan_tci is set to the VLAN that the splinter
303 * This member should be removed when the VLAN splinters feature is no
307 /* If received on a tunnel, the IP TOS value of the tunnel. */
308 uint8_t tunnel_ip_tos
;
311 static void action_xlate_ctx_init(struct action_xlate_ctx
*,
312 struct ofproto_dpif
*, const struct flow
*,
313 const struct initial_vals
*initial_vals
,
315 uint8_t tcp_flags
, const struct ofpbuf
*);
316 static void xlate_actions(struct action_xlate_ctx
*,
317 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
318 struct ofpbuf
*odp_actions
);
319 static void xlate_actions_for_side_effects(struct action_xlate_ctx
*,
320 const struct ofpact
*ofpacts
,
322 static void xlate_table_action(struct action_xlate_ctx
*, uint16_t in_port
,
323 uint8_t table_id
, bool may_packet_in
);
325 static size_t put_userspace_action(const struct ofproto_dpif
*,
326 struct ofpbuf
*odp_actions
,
328 const union user_action_cookie
*);
330 static void compose_slow_path(const struct ofproto_dpif
*, const struct flow
*,
331 enum slow_path_reason
,
332 uint64_t *stub
, size_t stub_size
,
333 const struct nlattr
**actionsp
,
334 size_t *actions_lenp
);
336 static void xlate_report(struct action_xlate_ctx
*ctx
, const char *s
);
338 /* A subfacet (see "struct subfacet" below) has three possible installation
341 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
342 * case just after the subfacet is created, just before the subfacet is
343 * destroyed, or if the datapath returns an error when we try to install a
346 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
348 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
349 * ofproto_dpif is installed in the datapath.
352 SF_NOT_INSTALLED
, /* No datapath flow for this subfacet. */
353 SF_FAST_PATH
, /* Full actions are installed. */
354 SF_SLOW_PATH
, /* Send-to-userspace action is installed. */
357 static const char *subfacet_path_to_string(enum subfacet_path
);
359 /* A dpif flow and actions associated with a facet.
361 * See also the large comment on struct facet. */
364 struct hmap_node hmap_node
; /* In struct ofproto_dpif 'subfacets' list. */
365 struct list list_node
; /* In struct facet's 'facets' list. */
366 struct facet
*facet
; /* Owning facet. */
368 enum odp_key_fitness key_fitness
;
372 long long int used
; /* Time last used; time created if not used. */
374 uint64_t dp_packet_count
; /* Last known packet count in the datapath. */
375 uint64_t dp_byte_count
; /* Last known byte count in the datapath. */
379 * These should be essentially identical for every subfacet in a facet, but
380 * may differ in trivial ways due to VLAN splinters. */
381 size_t actions_len
; /* Number of bytes in actions[]. */
382 struct nlattr
*actions
; /* Datapath actions. */
384 enum slow_path_reason slow
; /* 0 if fast path may be used. */
385 enum subfacet_path path
; /* Installed in datapath? */
387 /* Initial values of the packet that may be needed later. */
388 struct initial_vals initial_vals
;
390 /* Datapath port the packet arrived on. This is needed to remove
391 * flows for ports that are no longer part of the bridge. Since the
392 * flow definition only has the OpenFlow port number and the port is
393 * no longer part of the bridge, we can't determine the datapath port
394 * number needed to delete the flow from the datapath. */
395 uint32_t odp_in_port
;
398 #define SUBFACET_DESTROY_MAX_BATCH 50
400 static struct subfacet
*subfacet_create(struct facet
*, struct flow_miss
*miss
,
402 static struct subfacet
*subfacet_find(struct ofproto_dpif
*,
403 const struct nlattr
*key
, size_t key_len
,
405 static void subfacet_destroy(struct subfacet
*);
406 static void subfacet_destroy__(struct subfacet
*);
407 static void subfacet_destroy_batch(struct ofproto_dpif
*,
408 struct subfacet
**, int n
);
409 static void subfacet_reset_dp_stats(struct subfacet
*,
410 struct dpif_flow_stats
*);
411 static void subfacet_update_time(struct subfacet
*, long long int used
);
412 static void subfacet_update_stats(struct subfacet
*,
413 const struct dpif_flow_stats
*);
414 static void subfacet_make_actions(struct subfacet
*,
415 const struct ofpbuf
*packet
,
416 struct ofpbuf
*odp_actions
);
417 static int subfacet_install(struct subfacet
*,
418 const struct nlattr
*actions
, size_t actions_len
,
419 struct dpif_flow_stats
*, enum slow_path_reason
);
420 static void subfacet_uninstall(struct subfacet
*);
422 static enum subfacet_path
subfacet_want_path(enum slow_path_reason
);
424 /* An exact-match instantiation of an OpenFlow flow.
426 * A facet associates a "struct flow", which represents the Open vSwitch
427 * userspace idea of an exact-match flow, with one or more subfacets. Each
428 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
429 * the facet. When the kernel module (or other dpif implementation) and Open
430 * vSwitch userspace agree on the definition of a flow key, there is exactly
431 * one subfacet per facet. If the dpif implementation supports more-specific
432 * flow matching than userspace, however, a facet can have more than one
433 * subfacet, each of which corresponds to some distinction in flow that
434 * userspace simply doesn't understand.
436 * Flow expiration works in terms of subfacets, so a facet must have at least
437 * one subfacet or it will never expire, leaking memory. */
440 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
441 struct list list_node
; /* In owning rule's 'facets' list. */
442 struct rule_dpif
*rule
; /* Owning rule. */
445 struct list subfacets
;
446 long long int used
; /* Time last used; time created if not used. */
453 * - Do include packets and bytes sent "by hand", e.g. with
456 * - Do include packets and bytes that were obtained from the datapath
457 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
458 * DPIF_FP_ZERO_STATS).
460 * - Do not include packets or bytes that can be obtained from the
461 * datapath for any existing subfacet.
463 uint64_t packet_count
; /* Number of packets received. */
464 uint64_t byte_count
; /* Number of bytes received. */
466 /* Resubmit statistics. */
467 uint64_t prev_packet_count
; /* Number of packets from last stats push. */
468 uint64_t prev_byte_count
; /* Number of bytes from last stats push. */
469 long long int prev_used
; /* Used time from last stats push. */
472 uint64_t accounted_bytes
; /* Bytes processed by facet_account(). */
473 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
474 uint8_t tcp_flags
; /* TCP flags seen for this 'rule'. */
476 /* Properties of datapath actions.
478 * Every subfacet has its own actions because actions can differ slightly
479 * between splintered and non-splintered subfacets due to the VLAN tag
480 * being initially different (present vs. absent). All of them have these
481 * properties in common so we just store one copy of them here. */
482 bool has_learn
; /* Actions include NXAST_LEARN? */
483 bool has_normal
; /* Actions output to OFPP_NORMAL? */
484 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
485 tag_type tags
; /* Tags that would require revalidation. */
486 mirror_mask_t mirrors
; /* Bitmap of dependent mirrors. */
488 /* Storage for a single subfacet, to reduce malloc() time and space
489 * overhead. (A facet always has at least one subfacet and in the common
490 * case has exactly one subfacet. However, 'one_subfacet' may not
491 * always be valid, since it could have been removed after newer
492 * subfacets were pushed onto the 'subfacets' list.) */
493 struct subfacet one_subfacet
;
496 static struct facet
*facet_create(struct rule_dpif
*,
497 const struct flow
*, uint32_t hash
);
498 static void facet_remove(struct facet
*);
499 static void facet_free(struct facet
*);
501 static struct facet
*facet_find(struct ofproto_dpif
*,
502 const struct flow
*, uint32_t hash
);
503 static struct facet
*facet_lookup_valid(struct ofproto_dpif
*,
504 const struct flow
*, uint32_t hash
);
505 static void facet_revalidate(struct facet
*);
506 static bool facet_check_consistency(struct facet
*);
508 static void facet_flush_stats(struct facet
*);
510 static void facet_update_time(struct facet
*, long long int used
);
511 static void facet_reset_counters(struct facet
*);
512 static void facet_push_stats(struct facet
*);
513 static void facet_learn(struct facet
*);
514 static void facet_account(struct facet
*);
516 static struct subfacet
*facet_get_subfacet(struct facet
*);
518 static bool facet_is_controller_flow(struct facet
*);
521 struct hmap_node odp_port_node
; /* In dpif_backer's "odp_to_ofport_map". */
525 struct ofbundle
*bundle
; /* Bundle that contains this port, if any. */
526 struct list bundle_node
; /* In struct ofbundle's "ports" list. */
527 struct cfm
*cfm
; /* Connectivity Fault Management, if any. */
528 tag_type tag
; /* Tag associated with this port. */
529 bool may_enable
; /* May be enabled in bonds. */
530 long long int carrier_seq
; /* Carrier status changes. */
531 struct tnl_port
*tnl_port
; /* Tunnel handle, or null. */
534 struct stp_port
*stp_port
; /* Spanning Tree Protocol, if any. */
535 enum stp_state stp_state
; /* Always STP_DISABLED if STP not in use. */
536 long long int stp_state_entered
;
538 struct hmap priorities
; /* Map of attached 'priority_to_dscp's. */
540 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
542 * This is deprecated. It is only for compatibility with broken device
543 * drivers in old versions of Linux that do not properly support VLANs when
544 * VLAN devices are not used. When broken device drivers are no longer in
545 * widespread use, we will delete these interfaces. */
546 uint16_t realdev_ofp_port
;
550 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
551 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
552 * traffic egressing the 'ofport' with that priority should be marked with. */
553 struct priority_to_dscp
{
554 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'priorities' map. */
555 uint32_t priority
; /* Priority of this queue (see struct flow). */
557 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
560 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
562 * This is deprecated. It is only for compatibility with broken device drivers
563 * in old versions of Linux that do not properly support VLANs when VLAN
564 * devices are not used. When broken device drivers are no longer in
565 * widespread use, we will delete these interfaces. */
566 struct vlan_splinter
{
567 struct hmap_node realdev_vid_node
;
568 struct hmap_node vlandev_node
;
569 uint16_t realdev_ofp_port
;
570 uint16_t vlandev_ofp_port
;
574 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif
*,
575 uint32_t realdev
, ovs_be16 vlan_tci
);
576 static bool vsp_adjust_flow(const struct ofproto_dpif
*, struct flow
*);
577 static void vsp_remove(struct ofport_dpif
*);
578 static void vsp_add(struct ofport_dpif
*, uint16_t realdev_ofp_port
, int vid
);
580 static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif
*,
582 static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif
*,
585 static struct ofport_dpif
*
586 ofport_dpif_cast(const struct ofport
*ofport
)
588 ovs_assert(ofport
->ofproto
->ofproto_class
== &ofproto_dpif_class
);
589 return ofport
? CONTAINER_OF(ofport
, struct ofport_dpif
, up
) : NULL
;
592 static void port_run(struct ofport_dpif
*);
593 static void port_run_fast(struct ofport_dpif
*);
594 static void port_wait(struct ofport_dpif
*);
595 static int set_cfm(struct ofport
*, const struct cfm_settings
*);
596 static void ofport_clear_priorities(struct ofport_dpif
*);
598 struct dpif_completion
{
599 struct list list_node
;
600 struct ofoperation
*op
;
603 /* Extra information about a classifier table.
604 * Currently used just for optimized flow revalidation. */
606 /* If either of these is nonnull, then this table has a form that allows
607 * flows to be tagged to avoid revalidating most flows for the most common
608 * kinds of flow table changes. */
609 struct cls_table
*catchall_table
; /* Table that wildcards all fields. */
610 struct cls_table
*other_table
; /* Table with any other wildcard set. */
611 uint32_t basis
; /* Keeps each table's tags separate. */
614 /* Reasons that we might need to revalidate every facet, and corresponding
617 * A value of 0 means that there is no need to revalidate.
619 * It would be nice to have some cleaner way to integrate with coverage
620 * counters, but with only a few reasons I guess this is good enough for
622 enum revalidate_reason
{
623 REV_RECONFIGURE
= 1, /* Switch configuration changed. */
624 REV_STP
, /* Spanning tree protocol port status change. */
625 REV_PORT_TOGGLED
, /* Port enabled or disabled by CFM, LACP, ...*/
626 REV_FLOW_TABLE
, /* Flow table changed. */
627 REV_INCONSISTENCY
/* Facet self-check failed. */
629 COVERAGE_DEFINE(rev_reconfigure
);
630 COVERAGE_DEFINE(rev_stp
);
631 COVERAGE_DEFINE(rev_port_toggled
);
632 COVERAGE_DEFINE(rev_flow_table
);
633 COVERAGE_DEFINE(rev_inconsistency
);
635 /* Drop keys are odp flow keys which have drop flows installed in the kernel.
636 * These are datapath flows which have no associated ofproto, if they did we
637 * would use facets. */
639 struct hmap_node hmap_node
;
644 /* All datapaths of a given type share a single dpif backer instance. */
649 struct timer next_expiration
;
650 struct hmap odp_to_ofport_map
; /* ODP port to ofport mapping. */
652 struct simap tnl_backers
; /* Set of dpif ports backing tunnels. */
654 /* Facet revalidation flags applying to facets which use this backer. */
655 enum revalidate_reason need_revalidate
; /* Revalidate every facet. */
656 struct tag_set revalidate_set
; /* Revalidate only matching facets. */
658 struct hmap drop_keys
; /* Set of dropped odp keys. */
661 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
662 static struct shash all_dpif_backers
= SHASH_INITIALIZER(&all_dpif_backers
);
664 static void drop_key_clear(struct dpif_backer
*);
665 static struct ofport_dpif
*
666 odp_port_to_ofport(const struct dpif_backer
*, uint32_t odp_port
);
668 static void dpif_stats_update_hit_count(struct ofproto_dpif
*ofproto
,
671 struct ofproto_dpif
{
672 struct hmap_node all_ofproto_dpifs_node
; /* In 'all_ofproto_dpifs'. */
674 struct dpif_backer
*backer
;
676 /* Special OpenFlow rules. */
677 struct rule_dpif
*miss_rule
; /* Sends flow table misses to controller. */
678 struct rule_dpif
*no_packet_in_rule
; /* Drops flow table misses. */
684 struct netflow
*netflow
;
685 struct dpif_sflow
*sflow
;
686 struct hmap bundles
; /* Contains "struct ofbundle"s. */
687 struct mac_learning
*ml
;
688 struct ofmirror
*mirrors
[MAX_MIRRORS
];
690 bool has_bonded_bundles
;
694 struct hmap subfacets
;
695 struct governor
*governor
;
698 struct table_dpif tables
[N_TABLES
];
700 /* Support for debugging async flow mods. */
701 struct list completions
;
703 bool has_bundle_action
; /* True when the first bundle action appears. */
704 struct netdev_stats stats
; /* To account packets generated and consumed in
709 long long int stp_last_tick
;
711 /* VLAN splinters. */
712 struct hmap realdev_vid_map
; /* (realdev,vid) -> vlandev. */
713 struct hmap vlandev_map
; /* vlandev -> (realdev,vid). */
716 struct sset ports
; /* Set of standard port names. */
717 struct sset ghost_ports
; /* Ports with no datapath port. */
718 struct sset port_poll_set
; /* Queued names for port_poll() reply. */
719 int port_poll_errno
; /* Last errno for port_poll() reply. */
721 /* Per ofproto's dpif stats. */
726 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
727 * for debugging the asynchronous flow_mod implementation.) */
730 /* All existing ofproto_dpif instances, indexed by ->up.name. */
731 static struct hmap all_ofproto_dpifs
= HMAP_INITIALIZER(&all_ofproto_dpifs
);
733 static void ofproto_dpif_unixctl_init(void);
735 static struct ofproto_dpif
*
736 ofproto_dpif_cast(const struct ofproto
*ofproto
)
738 ovs_assert(ofproto
->ofproto_class
== &ofproto_dpif_class
);
739 return CONTAINER_OF(ofproto
, struct ofproto_dpif
, up
);
742 static struct ofport_dpif
*get_ofp_port(const struct ofproto_dpif
*,
744 static struct ofport_dpif
*get_odp_port(const struct ofproto_dpif
*,
746 static void ofproto_trace(struct ofproto_dpif
*, const struct flow
*,
747 const struct ofpbuf
*,
748 const struct initial_vals
*, struct ds
*);
750 /* Packet processing. */
751 static void update_learning_table(struct ofproto_dpif
*,
752 const struct flow
*, int vlan
,
755 #define FLOW_MISS_MAX_BATCH 50
756 static int handle_upcalls(struct dpif_backer
*, unsigned int max_batch
);
758 /* Flow expiration. */
759 static int expire(struct dpif_backer
*);
762 static void send_netflow_active_timeouts(struct ofproto_dpif
*);
765 static int send_packet(const struct ofport_dpif
*, struct ofpbuf
*packet
);
766 static size_t compose_sflow_action(const struct ofproto_dpif
*,
767 struct ofpbuf
*odp_actions
,
768 const struct flow
*, uint32_t odp_port
);
769 static void add_mirror_actions(struct action_xlate_ctx
*ctx
,
770 const struct flow
*flow
);
771 /* Global variables. */
772 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
774 /* Initial mappings of port to bridge mappings. */
775 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
777 /* Factory functions. */
780 init(const struct shash
*iface_hints
)
782 struct shash_node
*node
;
784 /* Make a local copy, since we don't own 'iface_hints' elements. */
785 SHASH_FOR_EACH(node
, iface_hints
) {
786 const struct iface_hint
*orig_hint
= node
->data
;
787 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
789 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
790 new_hint
->br_type
= xstrdup(orig_hint
->br_type
);
791 new_hint
->ofp_port
= orig_hint
->ofp_port
;
793 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
798 enumerate_types(struct sset
*types
)
800 dp_enumerate_types(types
);
804 enumerate_names(const char *type
, struct sset
*names
)
806 struct ofproto_dpif
*ofproto
;
809 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
810 if (strcmp(type
, ofproto
->up
.type
)) {
813 sset_add(names
, ofproto
->up
.name
);
820 del(const char *type
, const char *name
)
825 error
= dpif_open(name
, type
, &dpif
);
827 error
= dpif_delete(dpif
);
834 port_open_type(const char *datapath_type
, const char *port_type
)
836 return dpif_port_open_type(datapath_type
, port_type
);
839 /* Type functions. */
841 static struct ofproto_dpif
*
842 lookup_ofproto_dpif_by_port_name(const char *name
)
844 struct ofproto_dpif
*ofproto
;
846 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
847 if (sset_contains(&ofproto
->ports
, name
)) {
856 type_run(const char *type
)
858 struct dpif_backer
*backer
;
862 backer
= shash_find_data(&all_dpif_backers
, type
);
864 /* This is not necessarily a problem, since backers are only
865 * created on demand. */
869 dpif_run(backer
->dpif
);
871 if (backer
->need_revalidate
872 || !tag_set_is_empty(&backer
->revalidate_set
)) {
873 struct tag_set revalidate_set
= backer
->revalidate_set
;
874 bool need_revalidate
= backer
->need_revalidate
;
875 struct ofproto_dpif
*ofproto
;
876 struct simap_node
*node
;
877 struct simap tmp_backers
;
879 /* Handle tunnel garbage collection. */
880 simap_init(&tmp_backers
);
881 simap_swap(&backer
->tnl_backers
, &tmp_backers
);
883 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
884 struct ofport_dpif
*iter
;
886 if (backer
!= ofproto
->backer
) {
890 HMAP_FOR_EACH (iter
, up
.hmap_node
, &ofproto
->up
.ports
) {
893 if (!iter
->tnl_port
) {
897 dp_port
= netdev_vport_get_dpif_port(iter
->up
.netdev
);
898 node
= simap_find(&tmp_backers
, dp_port
);
900 simap_put(&backer
->tnl_backers
, dp_port
, node
->data
);
901 simap_delete(&tmp_backers
, node
);
902 node
= simap_find(&backer
->tnl_backers
, dp_port
);
904 node
= simap_find(&backer
->tnl_backers
, dp_port
);
906 uint32_t odp_port
= UINT32_MAX
;
908 if (!dpif_port_add(backer
->dpif
, iter
->up
.netdev
,
910 simap_put(&backer
->tnl_backers
, dp_port
, odp_port
);
911 node
= simap_find(&backer
->tnl_backers
, dp_port
);
916 iter
->odp_port
= node
? node
->data
: OVSP_NONE
;
917 if (tnl_port_reconfigure(&iter
->up
, iter
->odp_port
,
919 backer
->need_revalidate
= REV_RECONFIGURE
;
924 SIMAP_FOR_EACH (node
, &tmp_backers
) {
925 dpif_port_del(backer
->dpif
, node
->data
);
927 simap_destroy(&tmp_backers
);
929 switch (backer
->need_revalidate
) {
930 case REV_RECONFIGURE
: COVERAGE_INC(rev_reconfigure
); break;
931 case REV_STP
: COVERAGE_INC(rev_stp
); break;
932 case REV_PORT_TOGGLED
: COVERAGE_INC(rev_port_toggled
); break;
933 case REV_FLOW_TABLE
: COVERAGE_INC(rev_flow_table
); break;
934 case REV_INCONSISTENCY
: COVERAGE_INC(rev_inconsistency
); break;
937 if (backer
->need_revalidate
) {
938 /* Clear the drop_keys in case we should now be accepting some
939 * formerly dropped flows. */
940 drop_key_clear(backer
);
943 /* Clear the revalidation flags. */
944 tag_set_init(&backer
->revalidate_set
);
945 backer
->need_revalidate
= 0;
947 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
948 struct facet
*facet
, *next
;
950 if (ofproto
->backer
!= backer
) {
954 HMAP_FOR_EACH_SAFE (facet
, next
, hmap_node
, &ofproto
->facets
) {
956 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
957 facet_revalidate(facet
);
963 if (timer_expired(&backer
->next_expiration
)) {
964 int delay
= expire(backer
);
965 timer_set_duration(&backer
->next_expiration
, delay
);
968 /* Check for port changes in the dpif. */
969 while ((error
= dpif_port_poll(backer
->dpif
, &devname
)) == 0) {
970 struct ofproto_dpif
*ofproto
;
971 struct dpif_port port
;
973 /* Don't report on the datapath's device. */
974 if (!strcmp(devname
, dpif_base_name(backer
->dpif
))) {
978 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
979 &all_ofproto_dpifs
) {
980 if (simap_contains(&ofproto
->backer
->tnl_backers
, devname
)) {
985 ofproto
= lookup_ofproto_dpif_by_port_name(devname
);
986 if (dpif_port_query_by_name(backer
->dpif
, devname
, &port
)) {
987 /* The port was removed. If we know the datapath,
988 * report it through poll_set(). If we don't, it may be
989 * notifying us of a removal we initiated, so ignore it.
990 * If there's a pending ENOBUFS, let it stand, since
991 * everything will be reevaluated. */
992 if (ofproto
&& ofproto
->port_poll_errno
!= ENOBUFS
) {
993 sset_add(&ofproto
->port_poll_set
, devname
);
994 ofproto
->port_poll_errno
= 0;
996 } else if (!ofproto
) {
997 /* The port was added, but we don't know with which
998 * ofproto we should associate it. Delete it. */
999 dpif_port_del(backer
->dpif
, port
.port_no
);
1001 dpif_port_destroy(&port
);
1007 if (error
!= EAGAIN
) {
1008 struct ofproto_dpif
*ofproto
;
1010 /* There was some sort of error, so propagate it to all
1011 * ofprotos that use this backer. */
1012 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
1013 &all_ofproto_dpifs
) {
1014 if (ofproto
->backer
== backer
) {
1015 sset_clear(&ofproto
->port_poll_set
);
1016 ofproto
->port_poll_errno
= error
;
1025 type_run_fast(const char *type
)
1027 struct dpif_backer
*backer
;
1030 backer
= shash_find_data(&all_dpif_backers
, type
);
1032 /* This is not necessarily a problem, since backers are only
1033 * created on demand. */
1037 /* Handle one or more batches of upcalls, until there's nothing left to do
1038 * or until we do a fixed total amount of work.
1040 * We do work in batches because it can be much cheaper to set up a number
1041 * of flows and fire off their patches all at once. We do multiple batches
1042 * because in some cases handling a packet can cause another packet to be
1043 * queued almost immediately as part of the return flow. Both
1044 * optimizations can make major improvements on some benchmarks and
1045 * presumably for real traffic as well. */
1047 while (work
< FLOW_MISS_MAX_BATCH
) {
1048 int retval
= handle_upcalls(backer
, FLOW_MISS_MAX_BATCH
- work
);
1059 type_wait(const char *type
)
1061 struct dpif_backer
*backer
;
1063 backer
= shash_find_data(&all_dpif_backers
, type
);
1065 /* This is not necessarily a problem, since backers are only
1066 * created on demand. */
1070 timer_wait(&backer
->next_expiration
);
1073 /* Basic life-cycle. */
1075 static int add_internal_flows(struct ofproto_dpif
*);
1077 static struct ofproto
*
1080 struct ofproto_dpif
*ofproto
= xmalloc(sizeof *ofproto
);
1081 return &ofproto
->up
;
1085 dealloc(struct ofproto
*ofproto_
)
1087 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1092 close_dpif_backer(struct dpif_backer
*backer
)
1094 struct shash_node
*node
;
1096 ovs_assert(backer
->refcount
> 0);
1098 if (--backer
->refcount
) {
1102 drop_key_clear(backer
);
1103 hmap_destroy(&backer
->drop_keys
);
1105 simap_destroy(&backer
->tnl_backers
);
1106 hmap_destroy(&backer
->odp_to_ofport_map
);
1107 node
= shash_find(&all_dpif_backers
, backer
->type
);
1109 shash_delete(&all_dpif_backers
, node
);
1110 dpif_close(backer
->dpif
);
1115 /* Datapath port slated for removal from datapath. */
1116 struct odp_garbage
{
1117 struct list list_node
;
1122 open_dpif_backer(const char *type
, struct dpif_backer
**backerp
)
1124 struct dpif_backer
*backer
;
1125 struct dpif_port_dump port_dump
;
1126 struct dpif_port port
;
1127 struct shash_node
*node
;
1128 struct list garbage_list
;
1129 struct odp_garbage
*garbage
, *next
;
1135 backer
= shash_find_data(&all_dpif_backers
, type
);
1142 backer_name
= xasprintf("ovs-%s", type
);
1144 /* Remove any existing datapaths, since we assume we're the only
1145 * userspace controlling the datapath. */
1147 dp_enumerate_names(type
, &names
);
1148 SSET_FOR_EACH(name
, &names
) {
1149 struct dpif
*old_dpif
;
1151 /* Don't remove our backer if it exists. */
1152 if (!strcmp(name
, backer_name
)) {
1156 if (dpif_open(name
, type
, &old_dpif
)) {
1157 VLOG_WARN("couldn't open old datapath %s to remove it", name
);
1159 dpif_delete(old_dpif
);
1160 dpif_close(old_dpif
);
1163 sset_destroy(&names
);
1165 backer
= xmalloc(sizeof *backer
);
1167 error
= dpif_create_and_open(backer_name
, type
, &backer
->dpif
);
1170 VLOG_ERR("failed to open datapath of type %s: %s", type
,
1176 backer
->type
= xstrdup(type
);
1177 backer
->refcount
= 1;
1178 hmap_init(&backer
->odp_to_ofport_map
);
1179 hmap_init(&backer
->drop_keys
);
1180 timer_set_duration(&backer
->next_expiration
, 1000);
1181 backer
->need_revalidate
= 0;
1182 simap_init(&backer
->tnl_backers
);
1183 tag_set_init(&backer
->revalidate_set
);
1186 dpif_flow_flush(backer
->dpif
);
1188 /* Loop through the ports already on the datapath and remove any
1189 * that we don't need anymore. */
1190 list_init(&garbage_list
);
1191 dpif_port_dump_start(&port_dump
, backer
->dpif
);
1192 while (dpif_port_dump_next(&port_dump
, &port
)) {
1193 node
= shash_find(&init_ofp_ports
, port
.name
);
1194 if (!node
&& strcmp(port
.name
, dpif_base_name(backer
->dpif
))) {
1195 garbage
= xmalloc(sizeof *garbage
);
1196 garbage
->odp_port
= port
.port_no
;
1197 list_push_front(&garbage_list
, &garbage
->list_node
);
1200 dpif_port_dump_done(&port_dump
);
1202 LIST_FOR_EACH_SAFE (garbage
, next
, list_node
, &garbage_list
) {
1203 dpif_port_del(backer
->dpif
, garbage
->odp_port
);
1204 list_remove(&garbage
->list_node
);
1208 shash_add(&all_dpif_backers
, type
, backer
);
1210 error
= dpif_recv_set(backer
->dpif
, true);
1212 VLOG_ERR("failed to listen on datapath of type %s: %s",
1213 type
, strerror(error
));
1214 close_dpif_backer(backer
);
1222 construct(struct ofproto
*ofproto_
)
1224 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1225 struct shash_node
*node
, *next
;
1230 error
= open_dpif_backer(ofproto
->up
.type
, &ofproto
->backer
);
1235 max_ports
= dpif_get_max_ports(ofproto
->backer
->dpif
);
1236 ofproto_init_max_ports(ofproto_
, MIN(max_ports
, OFPP_MAX
));
1238 ofproto
->n_matches
= 0;
1240 ofproto
->netflow
= NULL
;
1241 ofproto
->sflow
= NULL
;
1242 ofproto
->stp
= NULL
;
1243 hmap_init(&ofproto
->bundles
);
1244 ofproto
->ml
= mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME
);
1245 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1246 ofproto
->mirrors
[i
] = NULL
;
1248 ofproto
->has_bonded_bundles
= false;
1250 hmap_init(&ofproto
->facets
);
1251 hmap_init(&ofproto
->subfacets
);
1252 ofproto
->governor
= NULL
;
1254 for (i
= 0; i
< N_TABLES
; i
++) {
1255 struct table_dpif
*table
= &ofproto
->tables
[i
];
1257 table
->catchall_table
= NULL
;
1258 table
->other_table
= NULL
;
1259 table
->basis
= random_uint32();
1262 list_init(&ofproto
->completions
);
1264 ofproto_dpif_unixctl_init();
1266 ofproto
->has_mirrors
= false;
1267 ofproto
->has_bundle_action
= false;
1269 hmap_init(&ofproto
->vlandev_map
);
1270 hmap_init(&ofproto
->realdev_vid_map
);
1272 sset_init(&ofproto
->ports
);
1273 sset_init(&ofproto
->ghost_ports
);
1274 sset_init(&ofproto
->port_poll_set
);
1275 ofproto
->port_poll_errno
= 0;
1277 SHASH_FOR_EACH_SAFE (node
, next
, &init_ofp_ports
) {
1278 struct iface_hint
*iface_hint
= node
->data
;
1280 if (!strcmp(iface_hint
->br_name
, ofproto
->up
.name
)) {
1281 /* Check if the datapath already has this port. */
1282 if (dpif_port_exists(ofproto
->backer
->dpif
, node
->name
)) {
1283 sset_add(&ofproto
->ports
, node
->name
);
1286 free(iface_hint
->br_name
);
1287 free(iface_hint
->br_type
);
1289 shash_delete(&init_ofp_ports
, node
);
1293 hmap_insert(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
,
1294 hash_string(ofproto
->up
.name
, 0));
1295 memset(&ofproto
->stats
, 0, sizeof ofproto
->stats
);
1297 ofproto_init_tables(ofproto_
, N_TABLES
);
1298 error
= add_internal_flows(ofproto
);
1299 ofproto
->up
.tables
[TBL_INTERNAL
].flags
= OFTABLE_HIDDEN
| OFTABLE_READONLY
;
1302 ofproto
->n_missed
= 0;
1308 add_internal_flow(struct ofproto_dpif
*ofproto
, int id
,
1309 const struct ofpbuf
*ofpacts
, struct rule_dpif
**rulep
)
1311 struct ofputil_flow_mod fm
;
1314 match_init_catchall(&fm
.match
);
1316 match_set_reg(&fm
.match
, 0, id
);
1317 fm
.new_cookie
= htonll(0);
1318 fm
.cookie
= htonll(0);
1319 fm
.cookie_mask
= htonll(0);
1320 fm
.table_id
= TBL_INTERNAL
;
1321 fm
.command
= OFPFC_ADD
;
1322 fm
.idle_timeout
= 0;
1323 fm
.hard_timeout
= 0;
1327 fm
.ofpacts
= ofpacts
->data
;
1328 fm
.ofpacts_len
= ofpacts
->size
;
1330 error
= ofproto_flow_mod(&ofproto
->up
, &fm
);
1332 VLOG_ERR_RL(&rl
, "failed to add internal flow %d (%s)",
1333 id
, ofperr_to_string(error
));
1337 *rulep
= rule_dpif_lookup__(ofproto
, &fm
.match
.flow
, TBL_INTERNAL
);
1338 ovs_assert(*rulep
!= NULL
);
1344 add_internal_flows(struct ofproto_dpif
*ofproto
)
1346 struct ofpact_controller
*controller
;
1347 uint64_t ofpacts_stub
[128 / 8];
1348 struct ofpbuf ofpacts
;
1352 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
1355 controller
= ofpact_put_CONTROLLER(&ofpacts
);
1356 controller
->max_len
= UINT16_MAX
;
1357 controller
->controller_id
= 0;
1358 controller
->reason
= OFPR_NO_MATCH
;
1359 ofpact_pad(&ofpacts
);
1361 error
= add_internal_flow(ofproto
, id
++, &ofpacts
, &ofproto
->miss_rule
);
1366 ofpbuf_clear(&ofpacts
);
1367 error
= add_internal_flow(ofproto
, id
++, &ofpacts
,
1368 &ofproto
->no_packet_in_rule
);
1373 complete_operations(struct ofproto_dpif
*ofproto
)
1375 struct dpif_completion
*c
, *next
;
1377 LIST_FOR_EACH_SAFE (c
, next
, list_node
, &ofproto
->completions
) {
1378 ofoperation_complete(c
->op
, 0);
1379 list_remove(&c
->list_node
);
1385 destruct(struct ofproto
*ofproto_
)
1387 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1388 struct rule_dpif
*rule
, *next_rule
;
1389 struct oftable
*table
;
1392 hmap_remove(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
);
1393 complete_operations(ofproto
);
1395 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
1396 struct cls_cursor cursor
;
1398 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1399 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
1400 ofproto_rule_destroy(&rule
->up
);
1404 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1405 mirror_destroy(ofproto
->mirrors
[i
]);
1408 netflow_destroy(ofproto
->netflow
);
1409 dpif_sflow_destroy(ofproto
->sflow
);
1410 hmap_destroy(&ofproto
->bundles
);
1411 mac_learning_destroy(ofproto
->ml
);
1413 hmap_destroy(&ofproto
->facets
);
1414 hmap_destroy(&ofproto
->subfacets
);
1415 governor_destroy(ofproto
->governor
);
1417 hmap_destroy(&ofproto
->vlandev_map
);
1418 hmap_destroy(&ofproto
->realdev_vid_map
);
1420 sset_destroy(&ofproto
->ports
);
1421 sset_destroy(&ofproto
->ghost_ports
);
1422 sset_destroy(&ofproto
->port_poll_set
);
1424 close_dpif_backer(ofproto
->backer
);
1428 run_fast(struct ofproto
*ofproto_
)
1430 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1431 struct ofport_dpif
*ofport
;
1433 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1434 port_run_fast(ofport
);
1441 run(struct ofproto
*ofproto_
)
1443 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1444 struct ofport_dpif
*ofport
;
1445 struct ofbundle
*bundle
;
1449 complete_operations(ofproto
);
1452 error
= run_fast(ofproto_
);
1457 if (ofproto
->netflow
) {
1458 if (netflow_run(ofproto
->netflow
)) {
1459 send_netflow_active_timeouts(ofproto
);
1462 if (ofproto
->sflow
) {
1463 dpif_sflow_run(ofproto
->sflow
);
1466 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1469 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1474 mac_learning_run(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
1476 /* Check the consistency of a random facet, to aid debugging. */
1477 if (!hmap_is_empty(&ofproto
->facets
)
1478 && !ofproto
->backer
->need_revalidate
) {
1479 struct facet
*facet
;
1481 facet
= CONTAINER_OF(hmap_random_node(&ofproto
->facets
),
1482 struct facet
, hmap_node
);
1483 if (!tag_set_intersects(&ofproto
->backer
->revalidate_set
,
1485 if (!facet_check_consistency(facet
)) {
1486 ofproto
->backer
->need_revalidate
= REV_INCONSISTENCY
;
1491 if (ofproto
->governor
) {
1494 governor_run(ofproto
->governor
);
1496 /* If the governor has shrunk to its minimum size and the number of
1497 * subfacets has dwindled, then drop the governor entirely.
1499 * For hysteresis, the number of subfacets to drop the governor is
1500 * smaller than the number needed to trigger its creation. */
1501 n_subfacets
= hmap_count(&ofproto
->subfacets
);
1502 if (n_subfacets
* 4 < ofproto
->up
.flow_eviction_threshold
1503 && governor_is_idle(ofproto
->governor
)) {
1504 governor_destroy(ofproto
->governor
);
1505 ofproto
->governor
= NULL
;
1513 wait(struct ofproto
*ofproto_
)
1515 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1516 struct ofport_dpif
*ofport
;
1517 struct ofbundle
*bundle
;
1519 if (!clogged
&& !list_is_empty(&ofproto
->completions
)) {
1520 poll_immediate_wake();
1523 dpif_wait(ofproto
->backer
->dpif
);
1524 dpif_recv_wait(ofproto
->backer
->dpif
);
1525 if (ofproto
->sflow
) {
1526 dpif_sflow_wait(ofproto
->sflow
);
1528 if (!tag_set_is_empty(&ofproto
->backer
->revalidate_set
)) {
1529 poll_immediate_wake();
1531 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1534 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1535 bundle_wait(bundle
);
1537 if (ofproto
->netflow
) {
1538 netflow_wait(ofproto
->netflow
);
1540 mac_learning_wait(ofproto
->ml
);
1542 if (ofproto
->backer
->need_revalidate
) {
1543 /* Shouldn't happen, but if it does just go around again. */
1544 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1545 poll_immediate_wake();
1547 if (ofproto
->governor
) {
1548 governor_wait(ofproto
->governor
);
1553 get_memory_usage(const struct ofproto
*ofproto_
, struct simap
*usage
)
1555 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1557 simap_increase(usage
, "facets", hmap_count(&ofproto
->facets
));
1558 simap_increase(usage
, "subfacets", hmap_count(&ofproto
->subfacets
));
1562 flush(struct ofproto
*ofproto_
)
1564 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1565 struct subfacet
*subfacet
, *next_subfacet
;
1566 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
1570 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
1571 &ofproto
->subfacets
) {
1572 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
1573 batch
[n_batch
++] = subfacet
;
1574 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
1575 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
1579 subfacet_destroy(subfacet
);
1584 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
1589 get_features(struct ofproto
*ofproto_ OVS_UNUSED
,
1590 bool *arp_match_ip
, enum ofputil_action_bitmap
*actions
)
1592 *arp_match_ip
= true;
1593 *actions
= (OFPUTIL_A_OUTPUT
|
1594 OFPUTIL_A_SET_VLAN_VID
|
1595 OFPUTIL_A_SET_VLAN_PCP
|
1596 OFPUTIL_A_STRIP_VLAN
|
1597 OFPUTIL_A_SET_DL_SRC
|
1598 OFPUTIL_A_SET_DL_DST
|
1599 OFPUTIL_A_SET_NW_SRC
|
1600 OFPUTIL_A_SET_NW_DST
|
1601 OFPUTIL_A_SET_NW_TOS
|
1602 OFPUTIL_A_SET_TP_SRC
|
1603 OFPUTIL_A_SET_TP_DST
|
1608 get_tables(struct ofproto
*ofproto_
, struct ofp12_table_stats
*ots
)
1610 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1611 struct dpif_dp_stats s
;
1613 strcpy(ots
->name
, "classifier");
1615 dpif_get_dp_stats(ofproto
->backer
->dpif
, &s
);
1617 ots
->lookup_count
= htonll(s
.n_hit
+ s
.n_missed
);
1618 ots
->matched_count
= htonll(s
.n_hit
+ ofproto
->n_matches
);
1621 static struct ofport
*
1624 struct ofport_dpif
*port
= xmalloc(sizeof *port
);
1629 port_dealloc(struct ofport
*port_
)
1631 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1636 port_construct(struct ofport
*port_
)
1638 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1639 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1640 const struct netdev
*netdev
= port
->up
.netdev
;
1641 struct dpif_port dpif_port
;
1644 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1645 port
->bundle
= NULL
;
1647 port
->tag
= tag_create_random();
1648 port
->may_enable
= true;
1649 port
->stp_port
= NULL
;
1650 port
->stp_state
= STP_DISABLED
;
1651 port
->tnl_port
= NULL
;
1652 hmap_init(&port
->priorities
);
1653 port
->realdev_ofp_port
= 0;
1654 port
->vlandev_vid
= 0;
1655 port
->carrier_seq
= netdev_get_carrier_resets(netdev
);
1657 if (netdev_vport_is_patch(netdev
)) {
1658 /* XXX By bailing out here, we don't do required sFlow work. */
1659 port
->odp_port
= OVSP_NONE
;
1663 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
1664 netdev_vport_get_dpif_port(netdev
),
1670 port
->odp_port
= dpif_port
.port_no
;
1672 if (netdev_get_tunnel_config(netdev
)) {
1673 port
->tnl_port
= tnl_port_add(&port
->up
, port
->odp_port
);
1675 /* Sanity-check that a mapping doesn't already exist. This
1676 * shouldn't happen for non-tunnel ports. */
1677 if (odp_port_to_ofp_port(ofproto
, port
->odp_port
) != OFPP_NONE
) {
1678 VLOG_ERR("port %s already has an OpenFlow port number",
1680 dpif_port_destroy(&dpif_port
);
1684 hmap_insert(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
,
1685 hash_int(port
->odp_port
, 0));
1687 dpif_port_destroy(&dpif_port
);
1689 if (ofproto
->sflow
) {
1690 dpif_sflow_add_port(ofproto
->sflow
, port_
, port
->odp_port
);
1697 port_destruct(struct ofport
*port_
)
1699 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1700 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1701 const char *dp_port_name
= netdev_vport_get_dpif_port(port
->up
.netdev
);
1702 const char *devname
= netdev_get_name(port
->up
.netdev
);
1704 if (dpif_port_exists(ofproto
->backer
->dpif
, dp_port_name
)) {
1705 /* The underlying device is still there, so delete it. This
1706 * happens when the ofproto is being destroyed, since the caller
1707 * assumes that removal of attached ports will happen as part of
1709 if (!port
->tnl_port
) {
1710 dpif_port_del(ofproto
->backer
->dpif
, port
->odp_port
);
1712 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1715 if (port
->odp_port
!= OVSP_NONE
&& !port
->tnl_port
) {
1716 hmap_remove(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
);
1719 tnl_port_del(port
->tnl_port
);
1720 sset_find_and_delete(&ofproto
->ports
, devname
);
1721 sset_find_and_delete(&ofproto
->ghost_ports
, devname
);
1722 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1723 bundle_remove(port_
);
1724 set_cfm(port_
, NULL
);
1725 if (ofproto
->sflow
) {
1726 dpif_sflow_del_port(ofproto
->sflow
, port
->odp_port
);
1729 ofport_clear_priorities(port
);
1730 hmap_destroy(&port
->priorities
);
1734 port_modified(struct ofport
*port_
)
1736 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1738 if (port
->bundle
&& port
->bundle
->bond
) {
1739 bond_slave_set_netdev(port
->bundle
->bond
, port
, port
->up
.netdev
);
1744 port_reconfigured(struct ofport
*port_
, enum ofputil_port_config old_config
)
1746 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1747 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1748 enum ofputil_port_config changed
= old_config
^ port
->up
.pp
.config
;
1750 if (changed
& (OFPUTIL_PC_NO_RECV
| OFPUTIL_PC_NO_RECV_STP
|
1751 OFPUTIL_PC_NO_FWD
| OFPUTIL_PC_NO_FLOOD
|
1752 OFPUTIL_PC_NO_PACKET_IN
)) {
1753 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1755 if (changed
& OFPUTIL_PC_NO_FLOOD
&& port
->bundle
) {
1756 bundle_update(port
->bundle
);
1762 set_sflow(struct ofproto
*ofproto_
,
1763 const struct ofproto_sflow_options
*sflow_options
)
1765 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1766 struct dpif_sflow
*ds
= ofproto
->sflow
;
1768 if (sflow_options
) {
1770 struct ofport_dpif
*ofport
;
1772 ds
= ofproto
->sflow
= dpif_sflow_create();
1773 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1774 dpif_sflow_add_port(ds
, &ofport
->up
, ofport
->odp_port
);
1776 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1778 dpif_sflow_set_options(ds
, sflow_options
);
1781 dpif_sflow_destroy(ds
);
1782 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1783 ofproto
->sflow
= NULL
;
1790 set_cfm(struct ofport
*ofport_
, const struct cfm_settings
*s
)
1792 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1799 struct ofproto_dpif
*ofproto
;
1801 ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1802 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1803 ofport
->cfm
= cfm_create(netdev_get_name(ofport
->up
.netdev
));
1806 if (cfm_configure(ofport
->cfm
, s
)) {
1812 cfm_destroy(ofport
->cfm
);
1818 get_cfm_status(const struct ofport
*ofport_
,
1819 struct ofproto_cfm_status
*status
)
1821 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1824 status
->faults
= cfm_get_fault(ofport
->cfm
);
1825 status
->remote_opstate
= cfm_get_opup(ofport
->cfm
);
1826 status
->health
= cfm_get_health(ofport
->cfm
);
1827 cfm_get_remote_mpids(ofport
->cfm
, &status
->rmps
, &status
->n_rmps
);
1834 /* Spanning Tree. */
1837 send_bpdu_cb(struct ofpbuf
*pkt
, int port_num
, void *ofproto_
)
1839 struct ofproto_dpif
*ofproto
= ofproto_
;
1840 struct stp_port
*sp
= stp_get_port(ofproto
->stp
, port_num
);
1841 struct ofport_dpif
*ofport
;
1843 ofport
= stp_port_get_aux(sp
);
1845 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on unknown port %d",
1846 ofproto
->up
.name
, port_num
);
1848 struct eth_header
*eth
= pkt
->l2
;
1850 netdev_get_etheraddr(ofport
->up
.netdev
, eth
->eth_src
);
1851 if (eth_addr_is_zero(eth
->eth_src
)) {
1852 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on port %d "
1853 "with unknown MAC", ofproto
->up
.name
, port_num
);
1855 send_packet(ofport
, pkt
);
1861 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1863 set_stp(struct ofproto
*ofproto_
, const struct ofproto_stp_settings
*s
)
1865 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1867 /* Only revalidate flows if the configuration changed. */
1868 if (!s
!= !ofproto
->stp
) {
1869 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1873 if (!ofproto
->stp
) {
1874 ofproto
->stp
= stp_create(ofproto_
->name
, s
->system_id
,
1875 send_bpdu_cb
, ofproto
);
1876 ofproto
->stp_last_tick
= time_msec();
1879 stp_set_bridge_id(ofproto
->stp
, s
->system_id
);
1880 stp_set_bridge_priority(ofproto
->stp
, s
->priority
);
1881 stp_set_hello_time(ofproto
->stp
, s
->hello_time
);
1882 stp_set_max_age(ofproto
->stp
, s
->max_age
);
1883 stp_set_forward_delay(ofproto
->stp
, s
->fwd_delay
);
1885 struct ofport
*ofport
;
1887 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->up
.ports
) {
1888 set_stp_port(ofport
, NULL
);
1891 stp_destroy(ofproto
->stp
);
1892 ofproto
->stp
= NULL
;
1899 get_stp_status(struct ofproto
*ofproto_
, struct ofproto_stp_status
*s
)
1901 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1905 s
->bridge_id
= stp_get_bridge_id(ofproto
->stp
);
1906 s
->designated_root
= stp_get_designated_root(ofproto
->stp
);
1907 s
->root_path_cost
= stp_get_root_path_cost(ofproto
->stp
);
1916 update_stp_port_state(struct ofport_dpif
*ofport
)
1918 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1919 enum stp_state state
;
1921 /* Figure out new state. */
1922 state
= ofport
->stp_port
? stp_port_get_state(ofport
->stp_port
)
1926 if (ofport
->stp_state
!= state
) {
1927 enum ofputil_port_state of_state
;
1930 VLOG_DBG_RL(&rl
, "port %s: STP state changed from %s to %s",
1931 netdev_get_name(ofport
->up
.netdev
),
1932 stp_state_name(ofport
->stp_state
),
1933 stp_state_name(state
));
1934 if (stp_learn_in_state(ofport
->stp_state
)
1935 != stp_learn_in_state(state
)) {
1936 /* xxx Learning action flows should also be flushed. */
1937 mac_learning_flush(ofproto
->ml
,
1938 &ofproto
->backer
->revalidate_set
);
1940 fwd_change
= stp_forward_in_state(ofport
->stp_state
)
1941 != stp_forward_in_state(state
);
1943 ofproto
->backer
->need_revalidate
= REV_STP
;
1944 ofport
->stp_state
= state
;
1945 ofport
->stp_state_entered
= time_msec();
1947 if (fwd_change
&& ofport
->bundle
) {
1948 bundle_update(ofport
->bundle
);
1951 /* Update the STP state bits in the OpenFlow port description. */
1952 of_state
= ofport
->up
.pp
.state
& ~OFPUTIL_PS_STP_MASK
;
1953 of_state
|= (state
== STP_LISTENING
? OFPUTIL_PS_STP_LISTEN
1954 : state
== STP_LEARNING
? OFPUTIL_PS_STP_LEARN
1955 : state
== STP_FORWARDING
? OFPUTIL_PS_STP_FORWARD
1956 : state
== STP_BLOCKING
? OFPUTIL_PS_STP_BLOCK
1958 ofproto_port_set_state(&ofport
->up
, of_state
);
1962 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1963 * caller is responsible for assigning STP port numbers and ensuring
1964 * there are no duplicates. */
1966 set_stp_port(struct ofport
*ofport_
,
1967 const struct ofproto_port_stp_settings
*s
)
1969 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1970 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1971 struct stp_port
*sp
= ofport
->stp_port
;
1973 if (!s
|| !s
->enable
) {
1975 ofport
->stp_port
= NULL
;
1976 stp_port_disable(sp
);
1977 update_stp_port_state(ofport
);
1980 } else if (sp
&& stp_port_no(sp
) != s
->port_num
1981 && ofport
== stp_port_get_aux(sp
)) {
1982 /* The port-id changed, so disable the old one if it's not
1983 * already in use by another port. */
1984 stp_port_disable(sp
);
1987 sp
= ofport
->stp_port
= stp_get_port(ofproto
->stp
, s
->port_num
);
1988 stp_port_enable(sp
);
1990 stp_port_set_aux(sp
, ofport
);
1991 stp_port_set_priority(sp
, s
->priority
);
1992 stp_port_set_path_cost(sp
, s
->path_cost
);
1994 update_stp_port_state(ofport
);
2000 get_stp_port_status(struct ofport
*ofport_
,
2001 struct ofproto_port_stp_status
*s
)
2003 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2004 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2005 struct stp_port
*sp
= ofport
->stp_port
;
2007 if (!ofproto
->stp
|| !sp
) {
2013 s
->port_id
= stp_port_get_id(sp
);
2014 s
->state
= stp_port_get_state(sp
);
2015 s
->sec_in_state
= (time_msec() - ofport
->stp_state_entered
) / 1000;
2016 s
->role
= stp_port_get_role(sp
);
2017 stp_port_get_counts(sp
, &s
->tx_count
, &s
->rx_count
, &s
->error_count
);
2023 stp_run(struct ofproto_dpif
*ofproto
)
2026 long long int now
= time_msec();
2027 long long int elapsed
= now
- ofproto
->stp_last_tick
;
2028 struct stp_port
*sp
;
2031 stp_tick(ofproto
->stp
, MIN(INT_MAX
, elapsed
));
2032 ofproto
->stp_last_tick
= now
;
2034 while (stp_get_changed_port(ofproto
->stp
, &sp
)) {
2035 struct ofport_dpif
*ofport
= stp_port_get_aux(sp
);
2038 update_stp_port_state(ofport
);
2042 if (stp_check_and_reset_fdb_flush(ofproto
->stp
)) {
2043 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
2049 stp_wait(struct ofproto_dpif
*ofproto
)
2052 poll_timer_wait(1000);
2056 /* Returns true if STP should process 'flow'. */
2058 stp_should_process_flow(const struct flow
*flow
)
2060 return eth_addr_equals(flow
->dl_dst
, eth_addr_stp
);
2064 stp_process_packet(const struct ofport_dpif
*ofport
,
2065 const struct ofpbuf
*packet
)
2067 struct ofpbuf payload
= *packet
;
2068 struct eth_header
*eth
= payload
.data
;
2069 struct stp_port
*sp
= ofport
->stp_port
;
2071 /* Sink packets on ports that have STP disabled when the bridge has
2073 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
2077 /* Trim off padding on payload. */
2078 if (payload
.size
> ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
2079 payload
.size
= ntohs(eth
->eth_type
) + ETH_HEADER_LEN
;
2082 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
2083 stp_received_bpdu(sp
, payload
.data
, payload
.size
);
2087 static struct priority_to_dscp
*
2088 get_priority(const struct ofport_dpif
*ofport
, uint32_t priority
)
2090 struct priority_to_dscp
*pdscp
;
2093 hash
= hash_int(priority
, 0);
2094 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &ofport
->priorities
) {
2095 if (pdscp
->priority
== priority
) {
2103 ofport_clear_priorities(struct ofport_dpif
*ofport
)
2105 struct priority_to_dscp
*pdscp
, *next
;
2107 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &ofport
->priorities
) {
2108 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
2114 set_queues(struct ofport
*ofport_
,
2115 const struct ofproto_port_queue
*qdscp_list
,
2118 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2119 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2120 struct hmap
new = HMAP_INITIALIZER(&new);
2123 for (i
= 0; i
< n_qdscp
; i
++) {
2124 struct priority_to_dscp
*pdscp
;
2128 dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
2129 if (dpif_queue_to_priority(ofproto
->backer
->dpif
, qdscp_list
[i
].queue
,
2134 pdscp
= get_priority(ofport
, priority
);
2136 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
2138 pdscp
= xmalloc(sizeof *pdscp
);
2139 pdscp
->priority
= priority
;
2141 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2144 if (pdscp
->dscp
!= dscp
) {
2146 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2149 hmap_insert(&new, &pdscp
->hmap_node
, hash_int(pdscp
->priority
, 0));
2152 if (!hmap_is_empty(&ofport
->priorities
)) {
2153 ofport_clear_priorities(ofport
);
2154 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2157 hmap_swap(&new, &ofport
->priorities
);
2165 /* Expires all MAC learning entries associated with 'bundle' and forces its
2166 * ofproto to revalidate every flow.
2168 * Normally MAC learning entries are removed only from the ofproto associated
2169 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2170 * are removed from every ofproto. When patch ports and SLB bonds are in use
2171 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2172 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2173 * with the host from which it migrated. */
2175 bundle_flush_macs(struct ofbundle
*bundle
, bool all_ofprotos
)
2177 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2178 struct mac_learning
*ml
= ofproto
->ml
;
2179 struct mac_entry
*mac
, *next_mac
;
2181 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2182 LIST_FOR_EACH_SAFE (mac
, next_mac
, lru_node
, &ml
->lrus
) {
2183 if (mac
->port
.p
== bundle
) {
2185 struct ofproto_dpif
*o
;
2187 HMAP_FOR_EACH (o
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
2189 struct mac_entry
*e
;
2191 e
= mac_learning_lookup(o
->ml
, mac
->mac
, mac
->vlan
,
2194 mac_learning_expire(o
->ml
, e
);
2200 mac_learning_expire(ml
, mac
);
2205 static struct ofbundle
*
2206 bundle_lookup(const struct ofproto_dpif
*ofproto
, void *aux
)
2208 struct ofbundle
*bundle
;
2210 HMAP_FOR_EACH_IN_BUCKET (bundle
, hmap_node
, hash_pointer(aux
, 0),
2211 &ofproto
->bundles
) {
2212 if (bundle
->aux
== aux
) {
2219 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
2220 * ones that are found to 'bundles'. */
2222 bundle_lookup_multiple(struct ofproto_dpif
*ofproto
,
2223 void **auxes
, size_t n_auxes
,
2224 struct hmapx
*bundles
)
2228 hmapx_init(bundles
);
2229 for (i
= 0; i
< n_auxes
; i
++) {
2230 struct ofbundle
*bundle
= bundle_lookup(ofproto
, auxes
[i
]);
2232 hmapx_add(bundles
, bundle
);
2238 bundle_update(struct ofbundle
*bundle
)
2240 struct ofport_dpif
*port
;
2242 bundle
->floodable
= true;
2243 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2244 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2245 || !stp_forward_in_state(port
->stp_state
)) {
2246 bundle
->floodable
= false;
2253 bundle_del_port(struct ofport_dpif
*port
)
2255 struct ofbundle
*bundle
= port
->bundle
;
2257 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2259 list_remove(&port
->bundle_node
);
2260 port
->bundle
= NULL
;
2263 lacp_slave_unregister(bundle
->lacp
, port
);
2266 bond_slave_unregister(bundle
->bond
, port
);
2269 bundle_update(bundle
);
2273 bundle_add_port(struct ofbundle
*bundle
, uint32_t ofp_port
,
2274 struct lacp_slave_settings
*lacp
)
2276 struct ofport_dpif
*port
;
2278 port
= get_ofp_port(bundle
->ofproto
, ofp_port
);
2283 if (port
->bundle
!= bundle
) {
2284 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2286 bundle_del_port(port
);
2289 port
->bundle
= bundle
;
2290 list_push_back(&bundle
->ports
, &port
->bundle_node
);
2291 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2292 || !stp_forward_in_state(port
->stp_state
)) {
2293 bundle
->floodable
= false;
2297 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2298 lacp_slave_register(bundle
->lacp
, port
, lacp
);
2305 bundle_destroy(struct ofbundle
*bundle
)
2307 struct ofproto_dpif
*ofproto
;
2308 struct ofport_dpif
*port
, *next_port
;
2315 ofproto
= bundle
->ofproto
;
2316 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2317 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2319 if (m
->out
== bundle
) {
2321 } else if (hmapx_find_and_delete(&m
->srcs
, bundle
)
2322 || hmapx_find_and_delete(&m
->dsts
, bundle
)) {
2323 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2328 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2329 bundle_del_port(port
);
2332 bundle_flush_macs(bundle
, true);
2333 hmap_remove(&ofproto
->bundles
, &bundle
->hmap_node
);
2335 free(bundle
->trunks
);
2336 lacp_destroy(bundle
->lacp
);
2337 bond_destroy(bundle
->bond
);
2342 bundle_set(struct ofproto
*ofproto_
, void *aux
,
2343 const struct ofproto_bundle_settings
*s
)
2345 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2346 bool need_flush
= false;
2347 struct ofport_dpif
*port
;
2348 struct ofbundle
*bundle
;
2349 unsigned long *trunks
;
2355 bundle_destroy(bundle_lookup(ofproto
, aux
));
2359 ovs_assert(s
->n_slaves
== 1 || s
->bond
!= NULL
);
2360 ovs_assert((s
->lacp
!= NULL
) == (s
->lacp_slaves
!= NULL
));
2362 bundle
= bundle_lookup(ofproto
, aux
);
2364 bundle
= xmalloc(sizeof *bundle
);
2366 bundle
->ofproto
= ofproto
;
2367 hmap_insert(&ofproto
->bundles
, &bundle
->hmap_node
,
2368 hash_pointer(aux
, 0));
2370 bundle
->name
= NULL
;
2372 list_init(&bundle
->ports
);
2373 bundle
->vlan_mode
= PORT_VLAN_TRUNK
;
2375 bundle
->trunks
= NULL
;
2376 bundle
->use_priority_tags
= s
->use_priority_tags
;
2377 bundle
->lacp
= NULL
;
2378 bundle
->bond
= NULL
;
2380 bundle
->floodable
= true;
2382 bundle
->src_mirrors
= 0;
2383 bundle
->dst_mirrors
= 0;
2384 bundle
->mirror_out
= 0;
2387 if (!bundle
->name
|| strcmp(s
->name
, bundle
->name
)) {
2389 bundle
->name
= xstrdup(s
->name
);
2394 if (!bundle
->lacp
) {
2395 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2396 bundle
->lacp
= lacp_create();
2398 lacp_configure(bundle
->lacp
, s
->lacp
);
2400 lacp_destroy(bundle
->lacp
);
2401 bundle
->lacp
= NULL
;
2404 /* Update set of ports. */
2406 for (i
= 0; i
< s
->n_slaves
; i
++) {
2407 if (!bundle_add_port(bundle
, s
->slaves
[i
],
2408 s
->lacp
? &s
->lacp_slaves
[i
] : NULL
)) {
2412 if (!ok
|| list_size(&bundle
->ports
) != s
->n_slaves
) {
2413 struct ofport_dpif
*next_port
;
2415 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2416 for (i
= 0; i
< s
->n_slaves
; i
++) {
2417 if (s
->slaves
[i
] == port
->up
.ofp_port
) {
2422 bundle_del_port(port
);
2426 ovs_assert(list_size(&bundle
->ports
) <= s
->n_slaves
);
2428 if (list_is_empty(&bundle
->ports
)) {
2429 bundle_destroy(bundle
);
2433 /* Set VLAN tagging mode */
2434 if (s
->vlan_mode
!= bundle
->vlan_mode
2435 || s
->use_priority_tags
!= bundle
->use_priority_tags
) {
2436 bundle
->vlan_mode
= s
->vlan_mode
;
2437 bundle
->use_priority_tags
= s
->use_priority_tags
;
2442 vlan
= (s
->vlan_mode
== PORT_VLAN_TRUNK
? -1
2443 : s
->vlan
>= 0 && s
->vlan
<= 4095 ? s
->vlan
2445 if (vlan
!= bundle
->vlan
) {
2446 bundle
->vlan
= vlan
;
2450 /* Get trunked VLANs. */
2451 switch (s
->vlan_mode
) {
2452 case PORT_VLAN_ACCESS
:
2456 case PORT_VLAN_TRUNK
:
2457 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2460 case PORT_VLAN_NATIVE_UNTAGGED
:
2461 case PORT_VLAN_NATIVE_TAGGED
:
2462 if (vlan
!= 0 && (!s
->trunks
2463 || !bitmap_is_set(s
->trunks
, vlan
)
2464 || bitmap_is_set(s
->trunks
, 0))) {
2465 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2467 trunks
= bitmap_clone(s
->trunks
, 4096);
2469 trunks
= bitmap_allocate1(4096);
2471 bitmap_set1(trunks
, vlan
);
2472 bitmap_set0(trunks
, 0);
2474 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2481 if (!vlan_bitmap_equal(trunks
, bundle
->trunks
)) {
2482 free(bundle
->trunks
);
2483 if (trunks
== s
->trunks
) {
2484 bundle
->trunks
= vlan_bitmap_clone(trunks
);
2486 bundle
->trunks
= trunks
;
2491 if (trunks
!= s
->trunks
) {
2496 if (!list_is_short(&bundle
->ports
)) {
2497 bundle
->ofproto
->has_bonded_bundles
= true;
2499 if (bond_reconfigure(bundle
->bond
, s
->bond
)) {
2500 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2503 bundle
->bond
= bond_create(s
->bond
);
2504 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2507 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2508 bond_slave_register(bundle
->bond
, port
, port
->up
.netdev
);
2511 bond_destroy(bundle
->bond
);
2512 bundle
->bond
= NULL
;
2515 /* If we changed something that would affect MAC learning, un-learn
2516 * everything on this port and force flow revalidation. */
2518 bundle_flush_macs(bundle
, false);
2525 bundle_remove(struct ofport
*port_
)
2527 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
2528 struct ofbundle
*bundle
= port
->bundle
;
2531 bundle_del_port(port
);
2532 if (list_is_empty(&bundle
->ports
)) {
2533 bundle_destroy(bundle
);
2534 } else if (list_is_short(&bundle
->ports
)) {
2535 bond_destroy(bundle
->bond
);
2536 bundle
->bond
= NULL
;
2542 send_pdu_cb(void *port_
, const void *pdu
, size_t pdu_size
)
2544 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 10);
2545 struct ofport_dpif
*port
= port_
;
2546 uint8_t ea
[ETH_ADDR_LEN
];
2549 error
= netdev_get_etheraddr(port
->up
.netdev
, ea
);
2551 struct ofpbuf packet
;
2554 ofpbuf_init(&packet
, 0);
2555 packet_pdu
= eth_compose(&packet
, eth_addr_lacp
, ea
, ETH_TYPE_LACP
,
2557 memcpy(packet_pdu
, pdu
, pdu_size
);
2559 send_packet(port
, &packet
);
2560 ofpbuf_uninit(&packet
);
2562 VLOG_ERR_RL(&rl
, "port %s: cannot obtain Ethernet address of iface "
2563 "%s (%s)", port
->bundle
->name
,
2564 netdev_get_name(port
->up
.netdev
), strerror(error
));
2569 bundle_send_learning_packets(struct ofbundle
*bundle
)
2571 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2572 int error
, n_packets
, n_errors
;
2573 struct mac_entry
*e
;
2575 error
= n_packets
= n_errors
= 0;
2576 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
2577 if (e
->port
.p
!= bundle
) {
2578 struct ofpbuf
*learning_packet
;
2579 struct ofport_dpif
*port
;
2583 /* The assignment to "port" is unnecessary but makes "grep"ing for
2584 * struct ofport_dpif more effective. */
2585 learning_packet
= bond_compose_learning_packet(bundle
->bond
,
2589 ret
= send_packet(port
, learning_packet
);
2590 ofpbuf_delete(learning_packet
);
2600 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2601 VLOG_WARN_RL(&rl
, "bond %s: %d errors sending %d gratuitous learning "
2602 "packets, last error was: %s",
2603 bundle
->name
, n_errors
, n_packets
, strerror(error
));
2605 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2606 bundle
->name
, n_packets
);
2611 bundle_run(struct ofbundle
*bundle
)
2614 lacp_run(bundle
->lacp
, send_pdu_cb
);
2617 struct ofport_dpif
*port
;
2619 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2620 bond_slave_set_may_enable(bundle
->bond
, port
, port
->may_enable
);
2623 bond_run(bundle
->bond
, &bundle
->ofproto
->backer
->revalidate_set
,
2624 lacp_status(bundle
->lacp
));
2625 if (bond_should_send_learning_packets(bundle
->bond
)) {
2626 bundle_send_learning_packets(bundle
);
2632 bundle_wait(struct ofbundle
*bundle
)
2635 lacp_wait(bundle
->lacp
);
2638 bond_wait(bundle
->bond
);
2645 mirror_scan(struct ofproto_dpif
*ofproto
)
2649 for (idx
= 0; idx
< MAX_MIRRORS
; idx
++) {
2650 if (!ofproto
->mirrors
[idx
]) {
2657 static struct ofmirror
*
2658 mirror_lookup(struct ofproto_dpif
*ofproto
, void *aux
)
2662 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2663 struct ofmirror
*mirror
= ofproto
->mirrors
[i
];
2664 if (mirror
&& mirror
->aux
== aux
) {
2672 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
2674 mirror_update_dups(struct ofproto_dpif
*ofproto
)
2678 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2679 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2682 m
->dup_mirrors
= MIRROR_MASK_C(1) << i
;
2686 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2687 struct ofmirror
*m1
= ofproto
->mirrors
[i
];
2694 for (j
= i
+ 1; j
< MAX_MIRRORS
; j
++) {
2695 struct ofmirror
*m2
= ofproto
->mirrors
[j
];
2697 if (m2
&& m1
->out
== m2
->out
&& m1
->out_vlan
== m2
->out_vlan
) {
2698 m1
->dup_mirrors
|= MIRROR_MASK_C(1) << j
;
2699 m2
->dup_mirrors
|= m1
->dup_mirrors
;
2706 mirror_set(struct ofproto
*ofproto_
, void *aux
,
2707 const struct ofproto_mirror_settings
*s
)
2709 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2710 mirror_mask_t mirror_bit
;
2711 struct ofbundle
*bundle
;
2712 struct ofmirror
*mirror
;
2713 struct ofbundle
*out
;
2714 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
2715 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
2718 mirror
= mirror_lookup(ofproto
, aux
);
2720 mirror_destroy(mirror
);
2726 idx
= mirror_scan(ofproto
);
2728 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2730 ofproto
->up
.name
, MAX_MIRRORS
, s
->name
);
2734 mirror
= ofproto
->mirrors
[idx
] = xzalloc(sizeof *mirror
);
2735 mirror
->ofproto
= ofproto
;
2738 mirror
->out_vlan
= -1;
2739 mirror
->name
= NULL
;
2742 if (!mirror
->name
|| strcmp(s
->name
, mirror
->name
)) {
2744 mirror
->name
= xstrdup(s
->name
);
2747 /* Get the new configuration. */
2748 if (s
->out_bundle
) {
2749 out
= bundle_lookup(ofproto
, s
->out_bundle
);
2751 mirror_destroy(mirror
);
2757 out_vlan
= s
->out_vlan
;
2759 bundle_lookup_multiple(ofproto
, s
->srcs
, s
->n_srcs
, &srcs
);
2760 bundle_lookup_multiple(ofproto
, s
->dsts
, s
->n_dsts
, &dsts
);
2762 /* If the configuration has not changed, do nothing. */
2763 if (hmapx_equals(&srcs
, &mirror
->srcs
)
2764 && hmapx_equals(&dsts
, &mirror
->dsts
)
2765 && vlan_bitmap_equal(mirror
->vlans
, s
->src_vlans
)
2766 && mirror
->out
== out
2767 && mirror
->out_vlan
== out_vlan
)
2769 hmapx_destroy(&srcs
);
2770 hmapx_destroy(&dsts
);
2774 hmapx_swap(&srcs
, &mirror
->srcs
);
2775 hmapx_destroy(&srcs
);
2777 hmapx_swap(&dsts
, &mirror
->dsts
);
2778 hmapx_destroy(&dsts
);
2780 free(mirror
->vlans
);
2781 mirror
->vlans
= vlan_bitmap_clone(s
->src_vlans
);
2784 mirror
->out_vlan
= out_vlan
;
2786 /* Update bundles. */
2787 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2788 HMAP_FOR_EACH (bundle
, hmap_node
, &mirror
->ofproto
->bundles
) {
2789 if (hmapx_contains(&mirror
->srcs
, bundle
)) {
2790 bundle
->src_mirrors
|= mirror_bit
;
2792 bundle
->src_mirrors
&= ~mirror_bit
;
2795 if (hmapx_contains(&mirror
->dsts
, bundle
)) {
2796 bundle
->dst_mirrors
|= mirror_bit
;
2798 bundle
->dst_mirrors
&= ~mirror_bit
;
2801 if (mirror
->out
== bundle
) {
2802 bundle
->mirror_out
|= mirror_bit
;
2804 bundle
->mirror_out
&= ~mirror_bit
;
2808 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2809 ofproto
->has_mirrors
= true;
2810 mac_learning_flush(ofproto
->ml
,
2811 &ofproto
->backer
->revalidate_set
);
2812 mirror_update_dups(ofproto
);
2818 mirror_destroy(struct ofmirror
*mirror
)
2820 struct ofproto_dpif
*ofproto
;
2821 mirror_mask_t mirror_bit
;
2822 struct ofbundle
*bundle
;
2829 ofproto
= mirror
->ofproto
;
2830 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2831 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
2833 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2834 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
2835 bundle
->src_mirrors
&= ~mirror_bit
;
2836 bundle
->dst_mirrors
&= ~mirror_bit
;
2837 bundle
->mirror_out
&= ~mirror_bit
;
2840 hmapx_destroy(&mirror
->srcs
);
2841 hmapx_destroy(&mirror
->dsts
);
2842 free(mirror
->vlans
);
2844 ofproto
->mirrors
[mirror
->idx
] = NULL
;
2848 mirror_update_dups(ofproto
);
2850 ofproto
->has_mirrors
= false;
2851 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2852 if (ofproto
->mirrors
[i
]) {
2853 ofproto
->has_mirrors
= true;
2860 mirror_get_stats(struct ofproto
*ofproto_
, void *aux
,
2861 uint64_t *packets
, uint64_t *bytes
)
2863 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2864 struct ofmirror
*mirror
= mirror_lookup(ofproto
, aux
);
2867 *packets
= *bytes
= UINT64_MAX
;
2871 *packets
= mirror
->packet_count
;
2872 *bytes
= mirror
->byte_count
;
2878 set_flood_vlans(struct ofproto
*ofproto_
, unsigned long *flood_vlans
)
2880 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2881 if (mac_learning_set_flood_vlans(ofproto
->ml
, flood_vlans
)) {
2882 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
2888 is_mirror_output_bundle(const struct ofproto
*ofproto_
, void *aux
)
2890 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2891 struct ofbundle
*bundle
= bundle_lookup(ofproto
, aux
);
2892 return bundle
&& bundle
->mirror_out
!= 0;
2896 forward_bpdu_changed(struct ofproto
*ofproto_
)
2898 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2899 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2903 set_mac_table_config(struct ofproto
*ofproto_
, unsigned int idle_time
,
2906 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2907 mac_learning_set_idle_time(ofproto
->ml
, idle_time
);
2908 mac_learning_set_max_entries(ofproto
->ml
, max_entries
);
2913 static struct ofport_dpif
*
2914 get_ofp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
2916 struct ofport
*ofport
= ofproto_get_port(&ofproto
->up
, ofp_port
);
2917 return ofport
? ofport_dpif_cast(ofport
) : NULL
;
2920 static struct ofport_dpif
*
2921 get_odp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
2923 struct ofport_dpif
*port
= odp_port_to_ofport(ofproto
->backer
, odp_port
);
2924 return port
&& &ofproto
->up
== port
->up
.ofproto
? port
: NULL
;
2928 ofproto_port_from_dpif_port(struct ofproto_dpif
*ofproto
,
2929 struct ofproto_port
*ofproto_port
,
2930 struct dpif_port
*dpif_port
)
2932 ofproto_port
->name
= dpif_port
->name
;
2933 ofproto_port
->type
= dpif_port
->type
;
2934 ofproto_port
->ofp_port
= odp_port_to_ofp_port(ofproto
, dpif_port
->port_no
);
2937 static struct ofport_dpif
*
2938 ofport_get_peer(const struct ofport_dpif
*ofport_dpif
)
2940 const struct ofproto_dpif
*ofproto
;
2943 peer
= netdev_vport_patch_peer(ofport_dpif
->up
.netdev
);
2948 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
2949 struct ofport
*ofport
;
2951 ofport
= shash_find_data(&ofproto
->up
.port_by_name
, peer
);
2952 if (ofport
&& ofport
->ofproto
->ofproto_class
== &ofproto_dpif_class
) {
2953 return ofport_dpif_cast(ofport
);
2960 port_run_fast(struct ofport_dpif
*ofport
)
2962 if (ofport
->cfm
&& cfm_should_send_ccm(ofport
->cfm
)) {
2963 struct ofpbuf packet
;
2965 ofpbuf_init(&packet
, 0);
2966 cfm_compose_ccm(ofport
->cfm
, &packet
, ofport
->up
.pp
.hw_addr
);
2967 send_packet(ofport
, &packet
);
2968 ofpbuf_uninit(&packet
);
2973 port_run(struct ofport_dpif
*ofport
)
2975 long long int carrier_seq
= netdev_get_carrier_resets(ofport
->up
.netdev
);
2976 bool carrier_changed
= carrier_seq
!= ofport
->carrier_seq
;
2977 bool enable
= netdev_get_carrier(ofport
->up
.netdev
);
2979 ofport
->carrier_seq
= carrier_seq
;
2981 port_run_fast(ofport
);
2983 if (ofport
->tnl_port
2984 && tnl_port_reconfigure(&ofport
->up
, ofport
->odp_port
,
2985 &ofport
->tnl_port
)) {
2986 ofproto_dpif_cast(ofport
->up
.ofproto
)->backer
->need_revalidate
= true;
2990 int cfm_opup
= cfm_get_opup(ofport
->cfm
);
2992 cfm_run(ofport
->cfm
);
2993 enable
= enable
&& !cfm_get_fault(ofport
->cfm
);
2995 if (cfm_opup
>= 0) {
2996 enable
= enable
&& cfm_opup
;
3000 if (ofport
->bundle
) {
3001 enable
= enable
&& lacp_slave_may_enable(ofport
->bundle
->lacp
, ofport
);
3002 if (carrier_changed
) {
3003 lacp_slave_carrier_changed(ofport
->bundle
->lacp
, ofport
);
3007 if (ofport
->may_enable
!= enable
) {
3008 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
3010 if (ofproto
->has_bundle_action
) {
3011 ofproto
->backer
->need_revalidate
= REV_PORT_TOGGLED
;
3015 ofport
->may_enable
= enable
;
3019 port_wait(struct ofport_dpif
*ofport
)
3022 cfm_wait(ofport
->cfm
);
3027 port_query_by_name(const struct ofproto
*ofproto_
, const char *devname
,
3028 struct ofproto_port
*ofproto_port
)
3030 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3031 struct dpif_port dpif_port
;
3034 if (sset_contains(&ofproto
->ghost_ports
, devname
)) {
3035 const char *type
= netdev_get_type_from_name(devname
);
3037 /* We may be called before ofproto->up.port_by_name is populated with
3038 * the appropriate ofport. For this reason, we must get the name and
3039 * type from the netdev layer directly. */
3041 const struct ofport
*ofport
;
3043 ofport
= shash_find_data(&ofproto
->up
.port_by_name
, devname
);
3044 ofproto_port
->ofp_port
= ofport
? ofport
->ofp_port
: OFPP_NONE
;
3045 ofproto_port
->name
= xstrdup(devname
);
3046 ofproto_port
->type
= xstrdup(type
);
3052 if (!sset_contains(&ofproto
->ports
, devname
)) {
3055 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
3056 devname
, &dpif_port
);
3058 ofproto_port_from_dpif_port(ofproto
, ofproto_port
, &dpif_port
);
3064 port_add(struct ofproto
*ofproto_
, struct netdev
*netdev
)
3066 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3067 const char *dp_port_name
= netdev_vport_get_dpif_port(netdev
);
3068 const char *devname
= netdev_get_name(netdev
);
3070 if (netdev_vport_is_patch(netdev
)) {
3071 sset_add(&ofproto
->ghost_ports
, netdev_get_name(netdev
));
3075 if (!dpif_port_exists(ofproto
->backer
->dpif
, dp_port_name
)) {
3076 uint32_t port_no
= UINT32_MAX
;
3079 error
= dpif_port_add(ofproto
->backer
->dpif
, netdev
, &port_no
);
3083 if (netdev_get_tunnel_config(netdev
)) {
3084 simap_put(&ofproto
->backer
->tnl_backers
, dp_port_name
, port_no
);
3088 if (netdev_get_tunnel_config(netdev
)) {
3089 sset_add(&ofproto
->ghost_ports
, devname
);
3091 sset_add(&ofproto
->ports
, devname
);
3097 port_del(struct ofproto
*ofproto_
, uint16_t ofp_port
)
3099 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3100 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
3107 sset_find_and_delete(&ofproto
->ghost_ports
,
3108 netdev_get_name(ofport
->up
.netdev
));
3109 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
3110 if (!ofport
->tnl_port
) {
3111 error
= dpif_port_del(ofproto
->backer
->dpif
, ofport
->odp_port
);
3113 /* The caller is going to close ofport->up.netdev. If this is a
3114 * bonded port, then the bond is using that netdev, so remove it
3115 * from the bond. The client will need to reconfigure everything
3116 * after deleting ports, so then the slave will get re-added. */
3117 bundle_remove(&ofport
->up
);
3124 port_get_stats(const struct ofport
*ofport_
, struct netdev_stats
*stats
)
3126 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
3129 error
= netdev_get_stats(ofport
->up
.netdev
, stats
);
3131 if (!error
&& ofport_
->ofp_port
== OFPP_LOCAL
) {
3132 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
3134 /* ofproto->stats.tx_packets represents packets that we created
3135 * internally and sent to some port (e.g. packets sent with
3136 * send_packet()). Account for them as if they had come from
3137 * OFPP_LOCAL and got forwarded. */
3139 if (stats
->rx_packets
!= UINT64_MAX
) {
3140 stats
->rx_packets
+= ofproto
->stats
.tx_packets
;
3143 if (stats
->rx_bytes
!= UINT64_MAX
) {
3144 stats
->rx_bytes
+= ofproto
->stats
.tx_bytes
;
3147 /* ofproto->stats.rx_packets represents packets that were received on
3148 * some port and we processed internally and dropped (e.g. STP).
3149 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3151 if (stats
->tx_packets
!= UINT64_MAX
) {
3152 stats
->tx_packets
+= ofproto
->stats
.rx_packets
;
3155 if (stats
->tx_bytes
!= UINT64_MAX
) {
3156 stats
->tx_bytes
+= ofproto
->stats
.rx_bytes
;
3163 /* Account packets for LOCAL port. */
3165 ofproto_update_local_port_stats(const struct ofproto
*ofproto_
,
3166 size_t tx_size
, size_t rx_size
)
3168 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3171 ofproto
->stats
.rx_packets
++;
3172 ofproto
->stats
.rx_bytes
+= rx_size
;
3175 ofproto
->stats
.tx_packets
++;
3176 ofproto
->stats
.tx_bytes
+= tx_size
;
3180 struct port_dump_state
{
3185 struct ofproto_port port
;
3190 port_dump_start(const struct ofproto
*ofproto_ OVS_UNUSED
, void **statep
)
3192 *statep
= xzalloc(sizeof(struct port_dump_state
));
3197 port_dump_next(const struct ofproto
*ofproto_
, void *state_
,
3198 struct ofproto_port
*port
)
3200 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3201 struct port_dump_state
*state
= state_
;
3202 const struct sset
*sset
;
3203 struct sset_node
*node
;
3205 if (state
->has_port
) {
3206 ofproto_port_destroy(&state
->port
);
3207 state
->has_port
= false;
3209 sset
= state
->ghost
? &ofproto
->ghost_ports
: &ofproto
->ports
;
3210 while ((node
= sset_at_position(sset
, &state
->bucket
, &state
->offset
))) {
3213 error
= port_query_by_name(ofproto_
, node
->name
, &state
->port
);
3215 *port
= state
->port
;
3216 state
->has_port
= true;
3218 } else if (error
!= ENODEV
) {
3223 if (!state
->ghost
) {
3224 state
->ghost
= true;
3227 return port_dump_next(ofproto_
, state_
, port
);
3234 port_dump_done(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
)
3236 struct port_dump_state
*state
= state_
;
3238 if (state
->has_port
) {
3239 ofproto_port_destroy(&state
->port
);
3246 port_poll(const struct ofproto
*ofproto_
, char **devnamep
)
3248 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3250 if (ofproto
->port_poll_errno
) {
3251 int error
= ofproto
->port_poll_errno
;
3252 ofproto
->port_poll_errno
= 0;
3256 if (sset_is_empty(&ofproto
->port_poll_set
)) {
3260 *devnamep
= sset_pop(&ofproto
->port_poll_set
);
3265 port_poll_wait(const struct ofproto
*ofproto_
)
3267 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3268 dpif_port_poll_wait(ofproto
->backer
->dpif
);
3272 port_is_lacp_current(const struct ofport
*ofport_
)
3274 const struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
3275 return (ofport
->bundle
&& ofport
->bundle
->lacp
3276 ? lacp_slave_is_current(ofport
->bundle
->lacp
, ofport
)
3280 /* Upcall handling. */
3282 /* Flow miss batching.
3284 * Some dpifs implement operations faster when you hand them off in a batch.
3285 * To allow batching, "struct flow_miss" queues the dpif-related work needed
3286 * for a given flow. Each "struct flow_miss" corresponds to sending one or
3287 * more packets, plus possibly installing the flow in the dpif.
3289 * So far we only batch the operations that affect flow setup time the most.
3290 * It's possible to batch more than that, but the benefit might be minimal. */
3292 struct hmap_node hmap_node
;
3293 struct ofproto_dpif
*ofproto
;
3295 enum odp_key_fitness key_fitness
;
3296 const struct nlattr
*key
;
3298 struct initial_vals initial_vals
;
3299 struct list packets
;
3300 enum dpif_upcall_type upcall_type
;
3301 uint32_t odp_in_port
;
3304 struct flow_miss_op
{
3305 struct dpif_op dpif_op
;
3306 void *garbage
; /* Pointer to pass to free(), NULL if none. */
3307 uint64_t stub
[1024 / 8]; /* Temporary buffer. */
3310 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
3311 * OpenFlow controller as necessary according to their individual
3312 * configurations. */
3314 send_packet_in_miss(struct ofproto_dpif
*ofproto
, const struct ofpbuf
*packet
,
3315 const struct flow
*flow
)
3317 struct ofputil_packet_in pin
;
3319 pin
.packet
= packet
->data
;
3320 pin
.packet_len
= packet
->size
;
3321 pin
.reason
= OFPR_NO_MATCH
;
3322 pin
.controller_id
= 0;
3327 pin
.send_len
= 0; /* not used for flow table misses */
3329 flow_get_metadata(flow
, &pin
.fmd
);
3331 connmgr_send_packet_in(ofproto
->up
.connmgr
, &pin
);
3334 static enum slow_path_reason
3335 process_special(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
3336 const struct ofport_dpif
*ofport
, const struct ofpbuf
*packet
)
3340 } else if (ofport
->cfm
&& cfm_should_process_flow(ofport
->cfm
, flow
)) {
3342 cfm_process_heartbeat(ofport
->cfm
, packet
);
3345 } else if (ofport
->bundle
&& ofport
->bundle
->lacp
3346 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
3348 lacp_process_packet(ofport
->bundle
->lacp
, ofport
, packet
);
3351 } else if (ofproto
->stp
&& stp_should_process_flow(flow
)) {
3353 stp_process_packet(ofport
, packet
);
3361 static struct flow_miss
*
3362 flow_miss_find(struct hmap
*todo
, const struct ofproto_dpif
*ofproto
,
3363 const struct flow
*flow
, uint32_t hash
)
3365 struct flow_miss
*miss
;
3367 HMAP_FOR_EACH_WITH_HASH (miss
, hmap_node
, hash
, todo
) {
3368 if (miss
->ofproto
== ofproto
&& flow_equal(&miss
->flow
, flow
)) {
3376 /* Partially Initializes 'op' as an "execute" operation for 'miss' and
3377 * 'packet'. The caller must initialize op->actions and op->actions_len. If
3378 * 'miss' is associated with a subfacet the caller must also initialize the
3379 * returned op->subfacet, and if anything needs to be freed after processing
3380 * the op, the caller must initialize op->garbage also. */
3382 init_flow_miss_execute_op(struct flow_miss
*miss
, struct ofpbuf
*packet
,
3383 struct flow_miss_op
*op
)
3385 if (miss
->flow
.vlan_tci
!= miss
->initial_vals
.vlan_tci
) {
3386 /* This packet was received on a VLAN splinter port. We
3387 * added a VLAN to the packet to make the packet resemble
3388 * the flow, but the actions were composed assuming that
3389 * the packet contained no VLAN. So, we must remove the
3390 * VLAN header from the packet before trying to execute the
3392 eth_pop_vlan(packet
);
3396 op
->dpif_op
.type
= DPIF_OP_EXECUTE
;
3397 op
->dpif_op
.u
.execute
.key
= miss
->key
;
3398 op
->dpif_op
.u
.execute
.key_len
= miss
->key_len
;
3399 op
->dpif_op
.u
.execute
.packet
= packet
;
3402 /* Helper for handle_flow_miss_without_facet() and
3403 * handle_flow_miss_with_facet(). */
3405 handle_flow_miss_common(struct rule_dpif
*rule
,
3406 struct ofpbuf
*packet
, const struct flow
*flow
)
3408 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3410 ofproto
->n_matches
++;
3412 if (rule
->up
.cr
.priority
== FAIL_OPEN_PRIORITY
) {
3414 * Extra-special case for fail-open mode.
3416 * We are in fail-open mode and the packet matched the fail-open
3417 * rule, but we are connected to a controller too. We should send
3418 * the packet up to the controller in the hope that it will try to
3419 * set up a flow and thereby allow us to exit fail-open.
3421 * See the top-level comment in fail-open.c for more information.
3423 send_packet_in_miss(ofproto
, packet
, flow
);
3427 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3428 * 'miss', is likely to be worth tracking in detail in userspace and (usually)
3429 * installing a datapath flow. The answer is usually "yes" (a return value of
3430 * true). However, for short flows the cost of bookkeeping is much higher than
3431 * the benefits, so when the datapath holds a large number of flows we impose
3432 * some heuristics to decide which flows are likely to be worth tracking. */
3434 flow_miss_should_make_facet(struct ofproto_dpif
*ofproto
,
3435 struct flow_miss
*miss
, uint32_t hash
)
3437 if (!ofproto
->governor
) {
3440 n_subfacets
= hmap_count(&ofproto
->subfacets
);
3441 if (n_subfacets
* 2 <= ofproto
->up
.flow_eviction_threshold
) {
3445 ofproto
->governor
= governor_create(ofproto
->up
.name
);
3448 return governor_should_install_flow(ofproto
->governor
, hash
,
3449 list_size(&miss
->packets
));
3452 /* Handles 'miss', which matches 'rule', without creating a facet or subfacet
3453 * or creating any datapath flow. May add an "execute" operation to 'ops' and
3454 * increment '*n_ops'. */
3456 handle_flow_miss_without_facet(struct flow_miss
*miss
,
3457 struct rule_dpif
*rule
,
3458 struct flow_miss_op
*ops
, size_t *n_ops
)
3460 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3461 long long int now
= time_msec();
3462 struct action_xlate_ctx ctx
;
3463 struct ofpbuf
*packet
;
3465 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3466 struct flow_miss_op
*op
= &ops
[*n_ops
];
3467 struct dpif_flow_stats stats
;
3468 struct ofpbuf odp_actions
;
3470 COVERAGE_INC(facet_suppress
);
3472 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
3474 dpif_flow_stats_extract(&miss
->flow
, packet
, now
, &stats
);
3475 rule_credit_stats(rule
, &stats
);
3477 action_xlate_ctx_init(&ctx
, ofproto
, &miss
->flow
,
3478 &miss
->initial_vals
, rule
, 0, packet
);
3479 ctx
.resubmit_stats
= &stats
;
3480 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
3483 if (odp_actions
.size
) {
3484 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3486 init_flow_miss_execute_op(miss
, packet
, op
);
3487 execute
->actions
= odp_actions
.data
;
3488 execute
->actions_len
= odp_actions
.size
;
3489 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
3493 ofpbuf_uninit(&odp_actions
);
3498 /* Handles 'miss', which matches 'facet'. May add any required datapath
3499 * operations to 'ops', incrementing '*n_ops' for each new op.
3501 * All of the packets in 'miss' are considered to have arrived at time 'now'.
3502 * This is really important only for new facets: if we just called time_msec()
3503 * here, then the new subfacet or its packets could look (occasionally) as
3504 * though it was used some time after the facet was used. That can make a
3505 * one-packet flow look like it has a nonzero duration, which looks odd in
3506 * e.g. NetFlow statistics. */
3508 handle_flow_miss_with_facet(struct flow_miss
*miss
, struct facet
*facet
,
3510 struct flow_miss_op
*ops
, size_t *n_ops
)
3512 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3513 enum subfacet_path want_path
;
3514 struct subfacet
*subfacet
;
3515 struct ofpbuf
*packet
;
3517 subfacet
= subfacet_create(facet
, miss
, now
);
3519 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3520 struct flow_miss_op
*op
= &ops
[*n_ops
];
3521 struct dpif_flow_stats stats
;
3522 struct ofpbuf odp_actions
;
3524 handle_flow_miss_common(facet
->rule
, packet
, &miss
->flow
);
3526 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
3527 if (!subfacet
->actions
|| subfacet
->slow
) {
3528 subfacet_make_actions(subfacet
, packet
, &odp_actions
);
3531 dpif_flow_stats_extract(&facet
->flow
, packet
, now
, &stats
);
3532 subfacet_update_stats(subfacet
, &stats
);
3534 if (subfacet
->actions_len
) {
3535 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3537 init_flow_miss_execute_op(miss
, packet
, op
);
3538 if (!subfacet
->slow
) {
3539 execute
->actions
= subfacet
->actions
;
3540 execute
->actions_len
= subfacet
->actions_len
;
3541 ofpbuf_uninit(&odp_actions
);
3543 execute
->actions
= odp_actions
.data
;
3544 execute
->actions_len
= odp_actions
.size
;
3545 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
3550 ofpbuf_uninit(&odp_actions
);
3554 want_path
= subfacet_want_path(subfacet
->slow
);
3555 if (miss
->upcall_type
== DPIF_UC_MISS
|| subfacet
->path
!= want_path
) {
3556 struct flow_miss_op
*op
= &ops
[(*n_ops
)++];
3557 struct dpif_flow_put
*put
= &op
->dpif_op
.u
.flow_put
;
3559 subfacet
->path
= want_path
;
3562 op
->dpif_op
.type
= DPIF_OP_FLOW_PUT
;
3563 put
->flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
3564 put
->key
= miss
->key
;
3565 put
->key_len
= miss
->key_len
;
3566 if (want_path
== SF_FAST_PATH
) {
3567 put
->actions
= subfacet
->actions
;
3568 put
->actions_len
= subfacet
->actions_len
;
3570 compose_slow_path(ofproto
, &facet
->flow
, subfacet
->slow
,
3571 op
->stub
, sizeof op
->stub
,
3572 &put
->actions
, &put
->actions_len
);
3578 /* Handles flow miss 'miss'. May add any required datapath operations
3579 * to 'ops', incrementing '*n_ops' for each new op. */
3581 handle_flow_miss(struct flow_miss
*miss
, struct flow_miss_op
*ops
,
3584 struct ofproto_dpif
*ofproto
= miss
->ofproto
;
3585 struct facet
*facet
;
3589 /* The caller must ensure that miss->hmap_node.hash contains
3590 * flow_hash(miss->flow, 0). */
3591 hash
= miss
->hmap_node
.hash
;
3593 facet
= facet_lookup_valid(ofproto
, &miss
->flow
, hash
);
3595 struct rule_dpif
*rule
= rule_dpif_lookup(ofproto
, &miss
->flow
);
3597 if (!flow_miss_should_make_facet(ofproto
, miss
, hash
)) {
3598 handle_flow_miss_without_facet(miss
, rule
, ops
, n_ops
);
3602 facet
= facet_create(rule
, &miss
->flow
, hash
);
3607 handle_flow_miss_with_facet(miss
, facet
, now
, ops
, n_ops
);
3610 static struct drop_key
*
3611 drop_key_lookup(const struct dpif_backer
*backer
, const struct nlattr
*key
,
3614 struct drop_key
*drop_key
;
3616 HMAP_FOR_EACH_WITH_HASH (drop_key
, hmap_node
, hash_bytes(key
, key_len
, 0),
3617 &backer
->drop_keys
) {
3618 if (drop_key
->key_len
== key_len
3619 && !memcmp(drop_key
->key
, key
, key_len
)) {
3627 drop_key_clear(struct dpif_backer
*backer
)
3629 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
3630 struct drop_key
*drop_key
, *next
;
3632 HMAP_FOR_EACH_SAFE (drop_key
, next
, hmap_node
, &backer
->drop_keys
) {
3635 error
= dpif_flow_del(backer
->dpif
, drop_key
->key
, drop_key
->key_len
,
3637 if (error
&& !VLOG_DROP_WARN(&rl
)) {
3638 struct ds ds
= DS_EMPTY_INITIALIZER
;
3639 odp_flow_key_format(drop_key
->key
, drop_key
->key_len
, &ds
);
3640 VLOG_WARN("Failed to delete drop key (%s) (%s)", strerror(error
),
3645 hmap_remove(&backer
->drop_keys
, &drop_key
->hmap_node
);
3646 free(drop_key
->key
);
3651 /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
3652 * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
3653 * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as
3654 * returned by odp_flow_key_to_flow(). Also, optionally populates 'ofproto'
3655 * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that
3656 * 'packet' ingressed.
3658 * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
3659 * 'flow''s in_port to OFPP_NONE.
3661 * This function does post-processing on data returned from
3662 * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
3663 * of the upcall processing logic. In particular, if the extracted in_port is
3664 * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
3665 * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
3666 * a VLAN header onto 'packet' (if it is nonnull).
3668 * Optionally, if 'initial_vals' is nonnull, sets 'initial_vals->vlan_tci'
3669 * to the VLAN TCI with which the packet was really received, that is, the
3670 * actual VLAN TCI extracted by odp_flow_key_to_flow(). (This differs from
3671 * the value returned in flow->vlan_tci only for packets received on
3672 * VLAN splinters.) Also, if received on an IP tunnel, sets
3673 * 'initial_vals->tunnel_ip_tos' to the tunnel's IP TOS.
3675 * Similarly, this function also includes some logic to help with tunnels. It
3676 * may modify 'flow' as necessary to make the tunneling implementation
3677 * transparent to the upcall processing logic.
3679 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
3680 * or some other positive errno if there are other problems. */
3682 ofproto_receive(const struct dpif_backer
*backer
, struct ofpbuf
*packet
,
3683 const struct nlattr
*key
, size_t key_len
,
3684 struct flow
*flow
, enum odp_key_fitness
*fitnessp
,
3685 struct ofproto_dpif
**ofproto
, uint32_t *odp_in_port
,
3686 struct initial_vals
*initial_vals
)
3688 const struct ofport_dpif
*port
;
3689 enum odp_key_fitness fitness
;
3692 fitness
= odp_flow_key_to_flow(key
, key_len
, flow
);
3693 if (fitness
== ODP_FIT_ERROR
) {
3699 initial_vals
->vlan_tci
= flow
->vlan_tci
;
3700 initial_vals
->tunnel_ip_tos
= flow
->tunnel
.ip_tos
;
3704 *odp_in_port
= flow
->in_port
;
3707 if (tnl_port_should_receive(flow
)) {
3708 const struct ofport
*ofport
= tnl_port_receive(flow
);
3710 flow
->in_port
= OFPP_NONE
;
3713 port
= ofport_dpif_cast(ofport
);
3715 /* We can't reproduce 'key' from 'flow'. */
3716 fitness
= fitness
== ODP_FIT_PERFECT
? ODP_FIT_TOO_MUCH
: fitness
;
3718 /* XXX: Since the tunnel module is not scoped per backer, it's
3719 * theoretically possible that we'll receive an ofport belonging to an
3720 * entirely different datapath. In practice, this can't happen because
3721 * no platforms has two separate datapaths which each support
3723 ovs_assert(ofproto_dpif_cast(port
->up
.ofproto
)->backer
== backer
);
3725 port
= odp_port_to_ofport(backer
, flow
->in_port
);
3727 flow
->in_port
= OFPP_NONE
;
3731 flow
->in_port
= port
->up
.ofp_port
;
3732 if (vsp_adjust_flow(ofproto_dpif_cast(port
->up
.ofproto
), flow
)) {
3734 /* Make the packet resemble the flow, so that it gets sent to
3735 * an OpenFlow controller properly, so that it looks correct
3736 * for sFlow, and so that flow_extract() will get the correct
3737 * vlan_tci if it is called on 'packet'.
3739 * The allocated space inside 'packet' probably also contains
3740 * 'key', that is, both 'packet' and 'key' are probably part of
3741 * a struct dpif_upcall (see the large comment on that
3742 * structure definition), so pushing data on 'packet' is in
3743 * general not a good idea since it could overwrite 'key' or
3744 * free it as a side effect. However, it's OK in this special
3745 * case because we know that 'packet' is inside a Netlink
3746 * attribute: pushing 4 bytes will just overwrite the 4-byte
3747 * "struct nlattr", which is fine since we don't need that
3748 * header anymore. */
3749 eth_push_vlan(packet
, flow
->vlan_tci
);
3751 /* We can't reproduce 'key' from 'flow'. */
3752 fitness
= fitness
== ODP_FIT_PERFECT
? ODP_FIT_TOO_MUCH
: fitness
;
3758 *ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
3763 *fitnessp
= fitness
;
3769 handle_miss_upcalls(struct dpif_backer
*backer
, struct dpif_upcall
*upcalls
,
3772 struct dpif_upcall
*upcall
;
3773 struct flow_miss
*miss
;
3774 struct flow_miss misses
[FLOW_MISS_MAX_BATCH
];
3775 struct flow_miss_op flow_miss_ops
[FLOW_MISS_MAX_BATCH
* 2];
3776 struct dpif_op
*dpif_ops
[FLOW_MISS_MAX_BATCH
* 2];
3786 /* Construct the to-do list.
3788 * This just amounts to extracting the flow from each packet and sticking
3789 * the packets that have the same flow in the same "flow_miss" structure so
3790 * that we can process them together. */
3793 for (upcall
= upcalls
; upcall
< &upcalls
[n_upcalls
]; upcall
++) {
3794 struct flow_miss
*miss
= &misses
[n_misses
];
3795 struct flow_miss
*existing_miss
;
3796 struct ofproto_dpif
*ofproto
;
3797 uint32_t odp_in_port
;
3802 error
= ofproto_receive(backer
, upcall
->packet
, upcall
->key
,
3803 upcall
->key_len
, &flow
, &miss
->key_fitness
,
3804 &ofproto
, &odp_in_port
, &miss
->initial_vals
);
3805 if (error
== ENODEV
) {
3806 struct drop_key
*drop_key
;
3808 /* Received packet on port for which we couldn't associate
3809 * an ofproto. This can happen if a port is removed while
3810 * traffic is being received. Print a rate-limited message
3811 * in case it happens frequently. Install a drop flow so
3812 * that future packets of the flow are inexpensively dropped
3814 VLOG_INFO_RL(&rl
, "received packet on unassociated port %"PRIu32
,
3817 drop_key
= drop_key_lookup(backer
, upcall
->key
, upcall
->key_len
);
3819 drop_key
= xmalloc(sizeof *drop_key
);
3820 drop_key
->key
= xmemdup(upcall
->key
, upcall
->key_len
);
3821 drop_key
->key_len
= upcall
->key_len
;
3823 hmap_insert(&backer
->drop_keys
, &drop_key
->hmap_node
,
3824 hash_bytes(drop_key
->key
, drop_key
->key_len
, 0));
3825 dpif_flow_put(backer
->dpif
, DPIF_FP_CREATE
| DPIF_FP_MODIFY
,
3826 drop_key
->key
, drop_key
->key_len
, NULL
, 0, NULL
);
3834 ofproto
->n_missed
++;
3835 flow_extract(upcall
->packet
, flow
.skb_priority
, flow
.skb_mark
,
3836 &flow
.tunnel
, flow
.in_port
, &miss
->flow
);
3838 /* Add other packets to a to-do list. */
3839 hash
= flow_hash(&miss
->flow
, 0);
3840 existing_miss
= flow_miss_find(&todo
, ofproto
, &miss
->flow
, hash
);
3841 if (!existing_miss
) {
3842 hmap_insert(&todo
, &miss
->hmap_node
, hash
);
3843 miss
->ofproto
= ofproto
;
3844 miss
->key
= upcall
->key
;
3845 miss
->key_len
= upcall
->key_len
;
3846 miss
->upcall_type
= upcall
->type
;
3847 miss
->odp_in_port
= odp_in_port
;
3848 list_init(&miss
->packets
);
3852 miss
= existing_miss
;
3854 list_push_back(&miss
->packets
, &upcall
->packet
->list_node
);
3857 /* Process each element in the to-do list, constructing the set of
3858 * operations to batch. */
3860 HMAP_FOR_EACH (miss
, hmap_node
, &todo
) {
3861 handle_flow_miss(miss
, flow_miss_ops
, &n_ops
);
3863 ovs_assert(n_ops
<= ARRAY_SIZE(flow_miss_ops
));
3865 /* Execute batch. */
3866 for (i
= 0; i
< n_ops
; i
++) {
3867 dpif_ops
[i
] = &flow_miss_ops
[i
].dpif_op
;
3869 dpif_operate(backer
->dpif
, dpif_ops
, n_ops
);
3872 for (i
= 0; i
< n_ops
; i
++) {
3873 free(flow_miss_ops
[i
].garbage
);
3875 hmap_destroy(&todo
);
3878 static enum { SFLOW_UPCALL
, MISS_UPCALL
, BAD_UPCALL
}
3879 classify_upcall(const struct dpif_upcall
*upcall
)
3881 union user_action_cookie cookie
;
3883 /* First look at the upcall type. */
3884 switch (upcall
->type
) {
3885 case DPIF_UC_ACTION
:
3891 case DPIF_N_UC_TYPES
:
3893 VLOG_WARN_RL(&rl
, "upcall has unexpected type %"PRIu32
, upcall
->type
);
3897 /* "action" upcalls need a closer look. */
3898 if (!upcall
->userdata
) {
3899 VLOG_WARN_RL(&rl
, "action upcall missing cookie");
3902 if (nl_attr_get_size(upcall
->userdata
) != sizeof(cookie
)) {
3903 VLOG_WARN_RL(&rl
, "action upcall cookie has unexpected size %zu",
3904 nl_attr_get_size(upcall
->userdata
));
3907 memcpy(&cookie
, nl_attr_get(upcall
->userdata
), sizeof(cookie
));
3908 switch (cookie
.type
) {
3909 case USER_ACTION_COOKIE_SFLOW
:
3910 return SFLOW_UPCALL
;
3912 case USER_ACTION_COOKIE_SLOW_PATH
:
3915 case USER_ACTION_COOKIE_UNSPEC
:
3917 VLOG_WARN_RL(&rl
, "invalid user cookie : 0x%"PRIx64
,
3918 nl_attr_get_u64(upcall
->userdata
));
3924 handle_sflow_upcall(struct dpif_backer
*backer
,
3925 const struct dpif_upcall
*upcall
)
3927 struct ofproto_dpif
*ofproto
;
3928 union user_action_cookie cookie
;
3930 uint32_t odp_in_port
;
3932 if (ofproto_receive(backer
, upcall
->packet
, upcall
->key
, upcall
->key_len
,
3933 &flow
, NULL
, &ofproto
, &odp_in_port
, NULL
)
3934 || !ofproto
->sflow
) {
3938 memcpy(&cookie
, nl_attr_get(upcall
->userdata
), sizeof(cookie
));
3939 dpif_sflow_received(ofproto
->sflow
, upcall
->packet
, &flow
,
3940 odp_in_port
, &cookie
);
3944 handle_upcalls(struct dpif_backer
*backer
, unsigned int max_batch
)
3946 struct dpif_upcall misses
[FLOW_MISS_MAX_BATCH
];
3947 struct ofpbuf miss_bufs
[FLOW_MISS_MAX_BATCH
];
3948 uint64_t miss_buf_stubs
[FLOW_MISS_MAX_BATCH
][4096 / 8];
3953 ovs_assert(max_batch
<= FLOW_MISS_MAX_BATCH
);
3956 for (n_processed
= 0; n_processed
< max_batch
; n_processed
++) {
3957 struct dpif_upcall
*upcall
= &misses
[n_misses
];
3958 struct ofpbuf
*buf
= &miss_bufs
[n_misses
];
3961 ofpbuf_use_stub(buf
, miss_buf_stubs
[n_misses
],
3962 sizeof miss_buf_stubs
[n_misses
]);
3963 error
= dpif_recv(backer
->dpif
, upcall
, buf
);
3969 switch (classify_upcall(upcall
)) {
3971 /* Handle it later. */
3976 handle_sflow_upcall(backer
, upcall
);
3986 /* Handle deferred MISS_UPCALL processing. */
3987 handle_miss_upcalls(backer
, misses
, n_misses
);
3988 for (i
= 0; i
< n_misses
; i
++) {
3989 ofpbuf_uninit(&miss_bufs
[i
]);
3995 /* Flow expiration. */
3997 static int subfacet_max_idle(const struct ofproto_dpif
*);
3998 static void update_stats(struct dpif_backer
*);
3999 static void rule_expire(struct rule_dpif
*);
4000 static void expire_subfacets(struct ofproto_dpif
*, int dp_max_idle
);
4002 /* This function is called periodically by run(). Its job is to collect
4003 * updates for the flows that have been installed into the datapath, most
4004 * importantly when they last were used, and then use that information to
4005 * expire flows that have not been used recently.
4007 * Returns the number of milliseconds after which it should be called again. */
4009 expire(struct dpif_backer
*backer
)
4011 struct ofproto_dpif
*ofproto
;
4012 int max_idle
= INT32_MAX
;
4014 /* Periodically clear out the drop keys in an effort to keep them
4015 * relatively few. */
4016 drop_key_clear(backer
);
4018 /* Update stats for each flow in the backer. */
4019 update_stats(backer
);
4021 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
4022 struct rule
*rule
, *next_rule
;
4025 if (ofproto
->backer
!= backer
) {
4029 /* Expire subfacets that have been idle too long. */
4030 dp_max_idle
= subfacet_max_idle(ofproto
);
4031 expire_subfacets(ofproto
, dp_max_idle
);
4033 max_idle
= MIN(max_idle
, dp_max_idle
);
4035 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
4037 LIST_FOR_EACH_SAFE (rule
, next_rule
, expirable
,
4038 &ofproto
->up
.expirable
) {
4039 rule_expire(rule_dpif_cast(rule
));
4042 /* All outstanding data in existing flows has been accounted, so it's a
4043 * good time to do bond rebalancing. */
4044 if (ofproto
->has_bonded_bundles
) {
4045 struct ofbundle
*bundle
;
4047 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
4049 bond_rebalance(bundle
->bond
, &backer
->revalidate_set
);
4055 return MIN(max_idle
, 1000);
4058 /* Updates flow table statistics given that the datapath just reported 'stats'
4059 * as 'subfacet''s statistics. */
4061 update_subfacet_stats(struct subfacet
*subfacet
,
4062 const struct dpif_flow_stats
*stats
)
4064 struct facet
*facet
= subfacet
->facet
;
4066 if (stats
->n_packets
>= subfacet
->dp_packet_count
) {
4067 uint64_t extra
= stats
->n_packets
- subfacet
->dp_packet_count
;
4068 facet
->packet_count
+= extra
;
4070 VLOG_WARN_RL(&rl
, "unexpected packet count from the datapath");
4073 if (stats
->n_bytes
>= subfacet
->dp_byte_count
) {
4074 facet
->byte_count
+= stats
->n_bytes
- subfacet
->dp_byte_count
;
4076 VLOG_WARN_RL(&rl
, "unexpected byte count from datapath");
4079 subfacet
->dp_packet_count
= stats
->n_packets
;
4080 subfacet
->dp_byte_count
= stats
->n_bytes
;
4082 facet
->tcp_flags
|= stats
->tcp_flags
;
4084 subfacet_update_time(subfacet
, stats
->used
);
4085 if (facet
->accounted_bytes
< facet
->byte_count
) {
4087 facet_account(facet
);
4088 facet
->accounted_bytes
= facet
->byte_count
;
4090 facet_push_stats(facet
);
4093 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
4094 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
4096 delete_unexpected_flow(struct ofproto_dpif
*ofproto
,
4097 const struct nlattr
*key
, size_t key_len
)
4099 if (!VLOG_DROP_WARN(&rl
)) {
4103 odp_flow_key_format(key
, key_len
, &s
);
4104 VLOG_WARN("unexpected flow on %s: %s", ofproto
->up
.name
, ds_cstr(&s
));
4108 COVERAGE_INC(facet_unexpected
);
4109 dpif_flow_del(ofproto
->backer
->dpif
, key
, key_len
, NULL
);
4112 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
4114 * This function also pushes statistics updates to rules which each facet
4115 * resubmits into. Generally these statistics will be accurate. However, if a
4116 * facet changes the rule it resubmits into at some time in between
4117 * update_stats() runs, it is possible that statistics accrued to the
4118 * old rule will be incorrectly attributed to the new rule. This could be
4119 * avoided by calling update_stats() whenever rules are created or
4120 * deleted. However, the performance impact of making so many calls to the
4121 * datapath do not justify the benefit of having perfectly accurate statistics.
4123 * In addition, this function maintains per ofproto flow hit counts. The patch
4124 * port is not treated specially. e.g. A packet ingress from br0 patched into
4125 * br1 will increase the hit count of br0 by 1, however, does not affect
4126 * the hit or miss counts of br1.
4129 update_stats(struct dpif_backer
*backer
)
4131 const struct dpif_flow_stats
*stats
;
4132 struct dpif_flow_dump dump
;
4133 const struct nlattr
*key
;
4136 dpif_flow_dump_start(&dump
, backer
->dpif
);
4137 while (dpif_flow_dump_next(&dump
, &key
, &key_len
, NULL
, NULL
, &stats
)) {
4139 struct subfacet
*subfacet
;
4140 struct ofproto_dpif
*ofproto
;
4141 struct ofport_dpif
*ofport
;
4144 if (ofproto_receive(backer
, NULL
, key
, key_len
, &flow
, NULL
, &ofproto
,
4149 ofport
= get_ofp_port(ofproto
, flow
.in_port
);
4150 if (ofport
&& ofport
->tnl_port
) {
4151 netdev_vport_inc_rx(ofport
->up
.netdev
, stats
);
4154 key_hash
= odp_flow_key_hash(key
, key_len
);
4155 subfacet
= subfacet_find(ofproto
, key
, key_len
, key_hash
);
4156 switch (subfacet
? subfacet
->path
: SF_NOT_INSTALLED
) {
4158 /* Update ofproto_dpif's hit count. */
4159 if (stats
->n_packets
> subfacet
->dp_packet_count
) {
4160 uint64_t delta
= stats
->n_packets
- subfacet
->dp_packet_count
;
4161 dpif_stats_update_hit_count(ofproto
, delta
);
4164 update_subfacet_stats(subfacet
, stats
);
4168 /* Stats are updated per-packet. */
4171 case SF_NOT_INSTALLED
:
4173 delete_unexpected_flow(ofproto
, key
, key_len
);
4177 dpif_flow_dump_done(&dump
);
4180 /* Calculates and returns the number of milliseconds of idle time after which
4181 * subfacets should expire from the datapath. When a subfacet expires, we fold
4182 * its statistics into its facet, and when a facet's last subfacet expires, we
4183 * fold its statistic into its rule. */
4185 subfacet_max_idle(const struct ofproto_dpif
*ofproto
)
4188 * Idle time histogram.
4190 * Most of the time a switch has a relatively small number of subfacets.
4191 * When this is the case we might as well keep statistics for all of them
4192 * in userspace and to cache them in the kernel datapath for performance as
4195 * As the number of subfacets increases, the memory required to maintain
4196 * statistics about them in userspace and in the kernel becomes
4197 * significant. However, with a large number of subfacets it is likely
4198 * that only a few of them are "heavy hitters" that consume a large amount
4199 * of bandwidth. At this point, only heavy hitters are worth caching in
4200 * the kernel and maintaining in userspaces; other subfacets we can
4203 * The technique used to compute the idle time is to build a histogram with
4204 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
4205 * that is installed in the kernel gets dropped in the appropriate bucket.
4206 * After the histogram has been built, we compute the cutoff so that only
4207 * the most-recently-used 1% of subfacets (but at least
4208 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
4209 * the most-recently-used bucket of subfacets is kept, so actually an
4210 * arbitrary number of subfacets can be kept in any given expiration run
4211 * (though the next run will delete most of those unless they receive
4214 * This requires a second pass through the subfacets, in addition to the
4215 * pass made by update_stats(), because the former function never looks at
4216 * uninstallable subfacets.
4218 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4219 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4220 int buckets
[N_BUCKETS
] = { 0 };
4221 int total
, subtotal
, bucket
;
4222 struct subfacet
*subfacet
;
4226 total
= hmap_count(&ofproto
->subfacets
);
4227 if (total
<= ofproto
->up
.flow_eviction_threshold
) {
4228 return N_BUCKETS
* BUCKET_WIDTH
;
4231 /* Build histogram. */
4233 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->subfacets
) {
4234 long long int idle
= now
- subfacet
->used
;
4235 int bucket
= (idle
<= 0 ? 0
4236 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4237 : (unsigned int) idle
/ BUCKET_WIDTH
);
4241 /* Find the first bucket whose flows should be expired. */
4242 subtotal
= bucket
= 0;
4244 subtotal
+= buckets
[bucket
++];
4245 } while (bucket
< N_BUCKETS
&&
4246 subtotal
< MAX(ofproto
->up
.flow_eviction_threshold
, total
/ 100));
4248 if (VLOG_IS_DBG_ENABLED()) {
4252 ds_put_cstr(&s
, "keep");
4253 for (i
= 0; i
< N_BUCKETS
; i
++) {
4255 ds_put_cstr(&s
, ", drop");
4258 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4261 VLOG_INFO("%s: %s (msec:count)", ofproto
->up
.name
, ds_cstr(&s
));
4265 return bucket
* BUCKET_WIDTH
;
4269 expire_subfacets(struct ofproto_dpif
*ofproto
, int dp_max_idle
)
4271 /* Cutoff time for most flows. */
4272 long long int normal_cutoff
= time_msec() - dp_max_idle
;
4274 /* We really want to keep flows for special protocols around, so use a more
4275 * conservative cutoff. */
4276 long long int special_cutoff
= time_msec() - 10000;
4278 struct subfacet
*subfacet
, *next_subfacet
;
4279 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
4283 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
4284 &ofproto
->subfacets
) {
4285 long long int cutoff
;
4287 cutoff
= (subfacet
->slow
& (SLOW_CFM
| SLOW_LACP
| SLOW_STP
)
4290 if (subfacet
->used
< cutoff
) {
4291 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
4292 batch
[n_batch
++] = subfacet
;
4293 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
4294 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
4298 subfacet_destroy(subfacet
);
4304 subfacet_destroy_batch(ofproto
, batch
, n_batch
);
4308 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4309 * then delete it entirely. */
4311 rule_expire(struct rule_dpif
*rule
)
4313 struct facet
*facet
, *next_facet
;
4317 if (rule
->up
.pending
) {
4318 /* We'll have to expire it later. */
4322 /* Has 'rule' expired? */
4324 if (rule
->up
.hard_timeout
4325 && now
> rule
->up
.modified
+ rule
->up
.hard_timeout
* 1000) {
4326 reason
= OFPRR_HARD_TIMEOUT
;
4327 } else if (rule
->up
.idle_timeout
4328 && now
> rule
->up
.used
+ rule
->up
.idle_timeout
* 1000) {
4329 reason
= OFPRR_IDLE_TIMEOUT
;
4334 COVERAGE_INC(ofproto_dpif_expired
);
4336 /* Update stats. (This is a no-op if the rule expired due to an idle
4337 * timeout, because that only happens when the rule has no facets left.) */
4338 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4339 facet_remove(facet
);
4342 /* Get rid of the rule. */
4343 ofproto_rule_expire(&rule
->up
, reason
);
4348 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
4350 * The caller must already have determined that no facet with an identical
4351 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
4352 * the ofproto's classifier table.
4354 * 'hash' must be the return value of flow_hash(flow, 0).
4356 * The facet will initially have no subfacets. The caller should create (at
4357 * least) one subfacet with subfacet_create(). */
4358 static struct facet
*
4359 facet_create(struct rule_dpif
*rule
, const struct flow
*flow
, uint32_t hash
)
4361 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4362 struct facet
*facet
;
4364 facet
= xzalloc(sizeof *facet
);
4365 facet
->used
= time_msec();
4366 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, hash
);
4367 list_push_back(&rule
->facets
, &facet
->list_node
);
4369 facet
->flow
= *flow
;
4370 list_init(&facet
->subfacets
);
4371 netflow_flow_init(&facet
->nf_flow
);
4372 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
4378 facet_free(struct facet
*facet
)
4383 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4384 * 'packet', which arrived on 'in_port'. */
4386 execute_odp_actions(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4387 const struct nlattr
*odp_actions
, size_t actions_len
,
4388 struct ofpbuf
*packet
)
4390 struct odputil_keybuf keybuf
;
4394 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
4395 odp_flow_key_from_flow(&key
, flow
,
4396 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
4398 error
= dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
4399 odp_actions
, actions_len
, packet
);
4403 /* Remove 'facet' from 'ofproto' and free up the associated memory:
4405 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4406 * rule's statistics, via subfacet_uninstall().
4408 * - Removes 'facet' from its rule and from ofproto->facets.
4411 facet_remove(struct facet
*facet
)
4413 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4414 struct subfacet
*subfacet
, *next_subfacet
;
4416 ovs_assert(!list_is_empty(&facet
->subfacets
));
4418 /* First uninstall all of the subfacets to get final statistics. */
4419 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4420 subfacet_uninstall(subfacet
);
4423 /* Flush the final stats to the rule.
4425 * This might require us to have at least one subfacet around so that we
4426 * can use its actions for accounting in facet_account(), which is why we
4427 * have uninstalled but not yet destroyed the subfacets. */
4428 facet_flush_stats(facet
);
4430 /* Now we're really all done so destroy everything. */
4431 LIST_FOR_EACH_SAFE (subfacet
, next_subfacet
, list_node
,
4432 &facet
->subfacets
) {
4433 subfacet_destroy__(subfacet
);
4435 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
4436 list_remove(&facet
->list_node
);
4440 /* Feed information from 'facet' back into the learning table to keep it in
4441 * sync with what is actually flowing through the datapath. */
4443 facet_learn(struct facet
*facet
)
4445 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4446 struct subfacet
*subfacet
= CONTAINER_OF(list_front(&facet
->subfacets
),
4447 struct subfacet
, list_node
);
4448 struct action_xlate_ctx ctx
;
4450 if (!facet
->has_learn
4451 && !facet
->has_normal
4452 && (!facet
->has_fin_timeout
4453 || !(facet
->tcp_flags
& (TCP_FIN
| TCP_RST
)))) {
4457 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4458 &subfacet
->initial_vals
,
4459 facet
->rule
, facet
->tcp_flags
, NULL
);
4460 ctx
.may_learn
= true;
4461 xlate_actions_for_side_effects(&ctx
, facet
->rule
->up
.ofpacts
,
4462 facet
->rule
->up
.ofpacts_len
);
4466 facet_account(struct facet
*facet
)
4468 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4469 struct subfacet
*subfacet
= facet_get_subfacet(facet
);
4470 const struct nlattr
*a
;
4475 if (!facet
->has_normal
|| !ofproto
->has_bonded_bundles
) {
4478 n_bytes
= facet
->byte_count
- facet
->accounted_bytes
;
4480 /* This loop feeds byte counters to bond_account() for rebalancing to use
4481 * as a basis. We also need to track the actual VLAN on which the packet
4482 * is going to be sent to ensure that it matches the one passed to
4483 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4486 * We use the actions from an arbitrary subfacet because they should all
4487 * be equally valid for our purpose. */
4488 vlan_tci
= facet
->flow
.vlan_tci
;
4489 NL_ATTR_FOR_EACH_UNSAFE (a
, left
,
4490 subfacet
->actions
, subfacet
->actions_len
) {
4491 const struct ovs_action_push_vlan
*vlan
;
4492 struct ofport_dpif
*port
;
4494 switch (nl_attr_type(a
)) {
4495 case OVS_ACTION_ATTR_OUTPUT
:
4496 port
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
4497 if (port
&& port
->bundle
&& port
->bundle
->bond
) {
4498 bond_account(port
->bundle
->bond
, &facet
->flow
,
4499 vlan_tci_to_vid(vlan_tci
), n_bytes
);
4503 case OVS_ACTION_ATTR_POP_VLAN
:
4504 vlan_tci
= htons(0);
4507 case OVS_ACTION_ATTR_PUSH_VLAN
:
4508 vlan
= nl_attr_get(a
);
4509 vlan_tci
= vlan
->vlan_tci
;
4515 /* Returns true if the only action for 'facet' is to send to the controller.
4516 * (We don't report NetFlow expiration messages for such facets because they
4517 * are just part of the control logic for the network, not real traffic). */
4519 facet_is_controller_flow(struct facet
*facet
)
4522 const struct rule
*rule
= &facet
->rule
->up
;
4523 const struct ofpact
*ofpacts
= rule
->ofpacts
;
4524 size_t ofpacts_len
= rule
->ofpacts_len
;
4526 if (ofpacts_len
> 0 &&
4527 ofpacts
->type
== OFPACT_CONTROLLER
&&
4528 ofpact_next(ofpacts
) >= ofpact_end(ofpacts
, ofpacts_len
)) {
4535 /* Folds all of 'facet''s statistics into its rule. Also updates the
4536 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4537 * 'facet''s statistics in the datapath should have been zeroed and folded into
4538 * its packet and byte counts before this function is called. */
4540 facet_flush_stats(struct facet
*facet
)
4542 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4543 struct subfacet
*subfacet
;
4545 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4546 ovs_assert(!subfacet
->dp_byte_count
);
4547 ovs_assert(!subfacet
->dp_packet_count
);
4550 facet_push_stats(facet
);
4551 if (facet
->accounted_bytes
< facet
->byte_count
) {
4552 facet_account(facet
);
4553 facet
->accounted_bytes
= facet
->byte_count
;
4556 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
4557 struct ofexpired expired
;
4558 expired
.flow
= facet
->flow
;
4559 expired
.packet_count
= facet
->packet_count
;
4560 expired
.byte_count
= facet
->byte_count
;
4561 expired
.used
= facet
->used
;
4562 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4565 facet
->rule
->packet_count
+= facet
->packet_count
;
4566 facet
->rule
->byte_count
+= facet
->byte_count
;
4568 /* Reset counters to prevent double counting if 'facet' ever gets
4570 facet_reset_counters(facet
);
4572 netflow_flow_clear(&facet
->nf_flow
);
4573 facet
->tcp_flags
= 0;
4576 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4577 * Returns it if found, otherwise a null pointer.
4579 * 'hash' must be the return value of flow_hash(flow, 0).
4581 * The returned facet might need revalidation; use facet_lookup_valid()
4582 * instead if that is important. */
4583 static struct facet
*
4584 facet_find(struct ofproto_dpif
*ofproto
,
4585 const struct flow
*flow
, uint32_t hash
)
4587 struct facet
*facet
;
4589 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, hash
, &ofproto
->facets
) {
4590 if (flow_equal(flow
, &facet
->flow
)) {
4598 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
4599 * Returns it if found, otherwise a null pointer.
4601 * 'hash' must be the return value of flow_hash(flow, 0).
4603 * The returned facet is guaranteed to be valid. */
4604 static struct facet
*
4605 facet_lookup_valid(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4608 struct facet
*facet
;
4610 facet
= facet_find(ofproto
, flow
, hash
);
4612 && (ofproto
->backer
->need_revalidate
4613 || tag_set_intersects(&ofproto
->backer
->revalidate_set
,
4615 facet_revalidate(facet
);
4617 /* facet_revalidate() may have destroyed 'facet'. */
4618 facet
= facet_find(ofproto
, flow
, hash
);
4624 /* Return a subfacet from 'facet'. A facet consists of one or more
4625 * subfacets, and this function returns one of them. */
4626 static struct subfacet
*facet_get_subfacet(struct facet
*facet
)
4628 return CONTAINER_OF(list_front(&facet
->subfacets
), struct subfacet
,
4633 subfacet_path_to_string(enum subfacet_path path
)
4636 case SF_NOT_INSTALLED
:
4637 return "not installed";
4639 return "in fast path";
4641 return "in slow path";
4647 /* Returns the path in which a subfacet should be installed if its 'slow'
4648 * member has the specified value. */
4649 static enum subfacet_path
4650 subfacet_want_path(enum slow_path_reason slow
)
4652 return slow
? SF_SLOW_PATH
: SF_FAST_PATH
;
4655 /* Returns true if 'subfacet' needs to have its datapath flow updated,
4656 * supposing that its actions have been recalculated as 'want_actions' and that
4657 * 'slow' is nonzero iff 'subfacet' should be in the slow path. */
4659 subfacet_should_install(struct subfacet
*subfacet
, enum slow_path_reason slow
,
4660 const struct ofpbuf
*want_actions
)
4662 enum subfacet_path want_path
= subfacet_want_path(slow
);
4663 return (want_path
!= subfacet
->path
4664 || (want_path
== SF_FAST_PATH
4665 && (subfacet
->actions_len
!= want_actions
->size
4666 || memcmp(subfacet
->actions
, want_actions
->data
,
4667 subfacet
->actions_len
))));
4671 facet_check_consistency(struct facet
*facet
)
4673 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
4675 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4677 uint64_t odp_actions_stub
[1024 / 8];
4678 struct ofpbuf odp_actions
;
4680 struct rule_dpif
*rule
;
4681 struct subfacet
*subfacet
;
4682 bool may_log
= false;
4685 /* Check the rule for consistency. */
4686 rule
= rule_dpif_lookup(ofproto
, &facet
->flow
);
4687 ok
= rule
== facet
->rule
;
4689 may_log
= !VLOG_DROP_WARN(&rl
);
4694 flow_format(&s
, &facet
->flow
);
4695 ds_put_format(&s
, ": facet associated with wrong rule (was "
4696 "table=%"PRIu8
",", facet
->rule
->up
.table_id
);
4697 cls_rule_format(&facet
->rule
->up
.cr
, &s
);
4698 ds_put_format(&s
, ") (should have been table=%"PRIu8
",",
4700 cls_rule_format(&rule
->up
.cr
, &s
);
4701 ds_put_char(&s
, ')');
4703 VLOG_WARN("%s", ds_cstr(&s
));
4708 /* Check the datapath actions for consistency. */
4709 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
4710 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4711 enum subfacet_path want_path
;
4712 struct action_xlate_ctx ctx
;
4715 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4716 &subfacet
->initial_vals
, rule
, 0, NULL
);
4717 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
4720 if (subfacet
->path
== SF_NOT_INSTALLED
) {
4721 /* This only happens if the datapath reported an error when we
4722 * tried to install the flow. Don't flag another error here. */
4726 want_path
= subfacet_want_path(subfacet
->slow
);
4727 if (want_path
== SF_SLOW_PATH
&& subfacet
->path
== SF_SLOW_PATH
) {
4728 /* The actions for slow-path flows may legitimately vary from one
4729 * packet to the next. We're done. */
4733 if (!subfacet_should_install(subfacet
, subfacet
->slow
, &odp_actions
)) {
4737 /* Inconsistency! */
4739 may_log
= !VLOG_DROP_WARN(&rl
);
4743 /* Rate-limited, skip reporting. */
4748 odp_flow_key_format(subfacet
->key
, subfacet
->key_len
, &s
);
4750 ds_put_cstr(&s
, ": inconsistency in subfacet");
4751 if (want_path
!= subfacet
->path
) {
4752 enum odp_key_fitness fitness
= subfacet
->key_fitness
;
4754 ds_put_format(&s
, " (%s, fitness=%s)",
4755 subfacet_path_to_string(subfacet
->path
),
4756 odp_key_fitness_to_string(fitness
));
4757 ds_put_format(&s
, " (should have been %s)",
4758 subfacet_path_to_string(want_path
));
4759 } else if (want_path
== SF_FAST_PATH
) {
4760 ds_put_cstr(&s
, " (actions were: ");
4761 format_odp_actions(&s
, subfacet
->actions
,
4762 subfacet
->actions_len
);
4763 ds_put_cstr(&s
, ") (correct actions: ");
4764 format_odp_actions(&s
, odp_actions
.data
, odp_actions
.size
);
4765 ds_put_char(&s
, ')');
4767 ds_put_cstr(&s
, " (actions: ");
4768 format_odp_actions(&s
, subfacet
->actions
,
4769 subfacet
->actions_len
);
4770 ds_put_char(&s
, ')');
4772 VLOG_WARN("%s", ds_cstr(&s
));
4775 ofpbuf_uninit(&odp_actions
);
4780 /* Re-searches the classifier for 'facet':
4782 * - If the rule found is different from 'facet''s current rule, moves
4783 * 'facet' to the new rule and recompiles its actions.
4785 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4786 * where it is and recompiles its actions anyway.
4788 * - If any of 'facet''s subfacets correspond to a new flow according to
4789 * ofproto_receive(), 'facet' is removed. */
4791 facet_revalidate(struct facet
*facet
)
4793 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4795 struct nlattr
*odp_actions
;
4798 struct actions
*new_actions
;
4800 struct action_xlate_ctx ctx
;
4801 uint64_t odp_actions_stub
[1024 / 8];
4802 struct ofpbuf odp_actions
;
4804 struct rule_dpif
*new_rule
;
4805 struct subfacet
*subfacet
;
4808 COVERAGE_INC(facet_revalidate
);
4810 /* Check that child subfacets still correspond to this facet. Tunnel
4811 * configuration changes could cause a subfacet's OpenFlow in_port to
4813 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4814 struct ofproto_dpif
*recv_ofproto
;
4815 struct flow recv_flow
;
4818 error
= ofproto_receive(ofproto
->backer
, NULL
, subfacet
->key
,
4819 subfacet
->key_len
, &recv_flow
, NULL
,
4820 &recv_ofproto
, NULL
, NULL
);
4822 || recv_ofproto
!= ofproto
4823 || memcmp(&recv_flow
, &facet
->flow
, sizeof recv_flow
)) {
4824 facet_remove(facet
);
4829 new_rule
= rule_dpif_lookup(ofproto
, &facet
->flow
);
4831 /* Calculate new datapath actions.
4833 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4834 * emit a NetFlow expiration and, if so, we need to have the old state
4835 * around to properly compose it. */
4837 /* If the datapath actions changed or the installability changed,
4838 * then we need to talk to the datapath. */
4841 memset(&ctx
, 0, sizeof ctx
);
4842 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
4843 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4844 enum slow_path_reason slow
;
4846 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4847 &subfacet
->initial_vals
, new_rule
, 0, NULL
);
4848 xlate_actions(&ctx
, new_rule
->up
.ofpacts
, new_rule
->up
.ofpacts_len
,
4851 slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
4852 if (subfacet_should_install(subfacet
, slow
, &odp_actions
)) {
4853 struct dpif_flow_stats stats
;
4855 subfacet_install(subfacet
,
4856 odp_actions
.data
, odp_actions
.size
, &stats
, slow
);
4857 subfacet_update_stats(subfacet
, &stats
);
4860 new_actions
= xcalloc(list_size(&facet
->subfacets
),
4861 sizeof *new_actions
);
4863 new_actions
[i
].odp_actions
= xmemdup(odp_actions
.data
,
4865 new_actions
[i
].actions_len
= odp_actions
.size
;
4870 ofpbuf_uninit(&odp_actions
);
4873 facet_flush_stats(facet
);
4876 /* Update 'facet' now that we've taken care of all the old state. */
4877 facet
->tags
= ctx
.tags
;
4878 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
4879 facet
->has_learn
= ctx
.has_learn
;
4880 facet
->has_normal
= ctx
.has_normal
;
4881 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
4882 facet
->mirrors
= ctx
.mirrors
;
4885 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4886 subfacet
->slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
4888 if (new_actions
&& new_actions
[i
].odp_actions
) {
4889 free(subfacet
->actions
);
4890 subfacet
->actions
= new_actions
[i
].odp_actions
;
4891 subfacet
->actions_len
= new_actions
[i
].actions_len
;
4897 if (facet
->rule
!= new_rule
) {
4898 COVERAGE_INC(facet_changed_rule
);
4899 list_remove(&facet
->list_node
);
4900 list_push_back(&new_rule
->facets
, &facet
->list_node
);
4901 facet
->rule
= new_rule
;
4902 facet
->used
= new_rule
->up
.created
;
4903 facet
->prev_used
= facet
->used
;
4907 /* Updates 'facet''s used time. Caller is responsible for calling
4908 * facet_push_stats() to update the flows which 'facet' resubmits into. */
4910 facet_update_time(struct facet
*facet
, long long int used
)
4912 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4913 if (used
> facet
->used
) {
4915 ofproto_rule_update_used(&facet
->rule
->up
, used
);
4916 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
4921 facet_reset_counters(struct facet
*facet
)
4923 facet
->packet_count
= 0;
4924 facet
->byte_count
= 0;
4925 facet
->prev_packet_count
= 0;
4926 facet
->prev_byte_count
= 0;
4927 facet
->accounted_bytes
= 0;
4931 facet_push_stats(struct facet
*facet
)
4933 struct dpif_flow_stats stats
;
4935 ovs_assert(facet
->packet_count
>= facet
->prev_packet_count
);
4936 ovs_assert(facet
->byte_count
>= facet
->prev_byte_count
);
4937 ovs_assert(facet
->used
>= facet
->prev_used
);
4939 stats
.n_packets
= facet
->packet_count
- facet
->prev_packet_count
;
4940 stats
.n_bytes
= facet
->byte_count
- facet
->prev_byte_count
;
4941 stats
.used
= facet
->used
;
4942 stats
.tcp_flags
= 0;
4944 if (stats
.n_packets
|| stats
.n_bytes
|| facet
->used
> facet
->prev_used
) {
4945 facet
->prev_packet_count
= facet
->packet_count
;
4946 facet
->prev_byte_count
= facet
->byte_count
;
4947 facet
->prev_used
= facet
->used
;
4949 flow_push_stats(facet
, &stats
);
4951 update_mirror_stats(ofproto_dpif_cast(facet
->rule
->up
.ofproto
),
4952 facet
->mirrors
, stats
.n_packets
, stats
.n_bytes
);
4957 rule_credit_stats(struct rule_dpif
*rule
, const struct dpif_flow_stats
*stats
)
4959 rule
->packet_count
+= stats
->n_packets
;
4960 rule
->byte_count
+= stats
->n_bytes
;
4961 ofproto_rule_update_used(&rule
->up
, stats
->used
);
4964 /* Pushes flow statistics to the rules which 'facet->flow' resubmits
4965 * into given 'facet->rule''s actions and mirrors. */
4967 flow_push_stats(struct facet
*facet
, const struct dpif_flow_stats
*stats
)
4969 struct rule_dpif
*rule
= facet
->rule
;
4970 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4971 struct subfacet
*subfacet
= facet_get_subfacet(facet
);
4972 struct action_xlate_ctx ctx
;
4974 ofproto_rule_update_used(&rule
->up
, stats
->used
);
4976 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
4977 &subfacet
->initial_vals
, rule
, 0, NULL
);
4978 ctx
.resubmit_stats
= stats
;
4979 xlate_actions_for_side_effects(&ctx
, rule
->up
.ofpacts
,
4980 rule
->up
.ofpacts_len
);
4985 static struct subfacet
*
4986 subfacet_find(struct ofproto_dpif
*ofproto
,
4987 const struct nlattr
*key
, size_t key_len
, uint32_t key_hash
)
4989 struct subfacet
*subfacet
;
4991 HMAP_FOR_EACH_WITH_HASH (subfacet
, hmap_node
, key_hash
,
4992 &ofproto
->subfacets
) {
4993 if (subfacet
->key_len
== key_len
4994 && !memcmp(key
, subfacet
->key
, key_len
)) {
5002 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
5003 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
5004 * existing subfacet if there is one, otherwise creates and returns a
5007 * If the returned subfacet is new, then subfacet->actions will be NULL, in
5008 * which case the caller must populate the actions with
5009 * subfacet_make_actions(). */
5010 static struct subfacet
*
5011 subfacet_create(struct facet
*facet
, struct flow_miss
*miss
,
5014 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5015 enum odp_key_fitness key_fitness
= miss
->key_fitness
;
5016 const struct nlattr
*key
= miss
->key
;
5017 size_t key_len
= miss
->key_len
;
5019 struct subfacet
*subfacet
;
5021 key_hash
= odp_flow_key_hash(key
, key_len
);
5023 if (list_is_empty(&facet
->subfacets
)) {
5024 subfacet
= &facet
->one_subfacet
;
5026 subfacet
= subfacet_find(ofproto
, key
, key_len
, key_hash
);
5028 if (subfacet
->facet
== facet
) {
5032 /* This shouldn't happen. */
5033 VLOG_ERR_RL(&rl
, "subfacet with wrong facet");
5034 subfacet_destroy(subfacet
);
5037 subfacet
= xmalloc(sizeof *subfacet
);
5040 hmap_insert(&ofproto
->subfacets
, &subfacet
->hmap_node
, key_hash
);
5041 list_push_back(&facet
->subfacets
, &subfacet
->list_node
);
5042 subfacet
->facet
= facet
;
5043 subfacet
->key_fitness
= key_fitness
;
5044 subfacet
->key
= xmemdup(key
, key_len
);
5045 subfacet
->key_len
= key_len
;
5046 subfacet
->used
= now
;
5047 subfacet
->dp_packet_count
= 0;
5048 subfacet
->dp_byte_count
= 0;
5049 subfacet
->actions_len
= 0;
5050 subfacet
->actions
= NULL
;
5051 subfacet
->slow
= (subfacet
->key_fitness
== ODP_FIT_TOO_LITTLE
5054 subfacet
->path
= SF_NOT_INSTALLED
;
5055 subfacet
->initial_vals
= miss
->initial_vals
;
5056 subfacet
->odp_in_port
= miss
->odp_in_port
;
5061 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
5062 * its facet within 'ofproto', and frees it. */
5064 subfacet_destroy__(struct subfacet
*subfacet
)
5066 struct facet
*facet
= subfacet
->facet
;
5067 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5069 subfacet_uninstall(subfacet
);
5070 hmap_remove(&ofproto
->subfacets
, &subfacet
->hmap_node
);
5071 list_remove(&subfacet
->list_node
);
5072 free(subfacet
->key
);
5073 free(subfacet
->actions
);
5074 if (subfacet
!= &facet
->one_subfacet
) {
5079 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
5080 * last remaining subfacet in its facet destroys the facet too. */
5082 subfacet_destroy(struct subfacet
*subfacet
)
5084 struct facet
*facet
= subfacet
->facet
;
5086 if (list_is_singleton(&facet
->subfacets
)) {
5087 /* facet_remove() needs at least one subfacet (it will remove it). */
5088 facet_remove(facet
);
5090 subfacet_destroy__(subfacet
);
5095 subfacet_destroy_batch(struct ofproto_dpif
*ofproto
,
5096 struct subfacet
**subfacets
, int n
)
5098 struct dpif_op ops
[SUBFACET_DESTROY_MAX_BATCH
];
5099 struct dpif_op
*opsp
[SUBFACET_DESTROY_MAX_BATCH
];
5100 struct dpif_flow_stats stats
[SUBFACET_DESTROY_MAX_BATCH
];
5103 for (i
= 0; i
< n
; i
++) {
5104 ops
[i
].type
= DPIF_OP_FLOW_DEL
;
5105 ops
[i
].u
.flow_del
.key
= subfacets
[i
]->key
;
5106 ops
[i
].u
.flow_del
.key_len
= subfacets
[i
]->key_len
;
5107 ops
[i
].u
.flow_del
.stats
= &stats
[i
];
5111 dpif_operate(ofproto
->backer
->dpif
, opsp
, n
);
5112 for (i
= 0; i
< n
; i
++) {
5113 subfacet_reset_dp_stats(subfacets
[i
], &stats
[i
]);
5114 subfacets
[i
]->path
= SF_NOT_INSTALLED
;
5115 subfacet_destroy(subfacets
[i
]);
5119 /* Composes the datapath actions for 'subfacet' based on its rule's actions.
5120 * Translates the actions into 'odp_actions', which the caller must have
5121 * initialized and is responsible for uninitializing. */
5123 subfacet_make_actions(struct subfacet
*subfacet
, const struct ofpbuf
*packet
,
5124 struct ofpbuf
*odp_actions
)
5126 struct facet
*facet
= subfacet
->facet
;
5127 struct rule_dpif
*rule
= facet
->rule
;
5128 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5130 struct action_xlate_ctx ctx
;
5132 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
5133 &subfacet
->initial_vals
, rule
, 0, packet
);
5134 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, odp_actions
);
5135 facet
->tags
= ctx
.tags
;
5136 facet
->has_learn
= ctx
.has_learn
;
5137 facet
->has_normal
= ctx
.has_normal
;
5138 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
5139 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
5140 facet
->mirrors
= ctx
.mirrors
;
5142 subfacet
->slow
= (subfacet
->slow
& SLOW_MATCH
) | ctx
.slow
;
5143 if (subfacet
->actions_len
!= odp_actions
->size
5144 || memcmp(subfacet
->actions
, odp_actions
->data
, odp_actions
->size
)) {
5145 free(subfacet
->actions
);
5146 subfacet
->actions_len
= odp_actions
->size
;
5147 subfacet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
5151 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
5152 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
5153 * in the datapath will be zeroed and 'stats' will be updated with traffic new
5154 * since 'subfacet' was last updated.
5156 * Returns 0 if successful, otherwise a positive errno value. */
5158 subfacet_install(struct subfacet
*subfacet
,
5159 const struct nlattr
*actions
, size_t actions_len
,
5160 struct dpif_flow_stats
*stats
,
5161 enum slow_path_reason slow
)
5163 struct facet
*facet
= subfacet
->facet
;
5164 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5165 enum subfacet_path path
= subfacet_want_path(slow
);
5166 uint64_t slow_path_stub
[128 / 8];
5167 enum dpif_flow_put_flags flags
;
5170 flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
5172 flags
|= DPIF_FP_ZERO_STATS
;
5175 if (path
== SF_SLOW_PATH
) {
5176 compose_slow_path(ofproto
, &facet
->flow
, slow
,
5177 slow_path_stub
, sizeof slow_path_stub
,
5178 &actions
, &actions_len
);
5181 ret
= dpif_flow_put(ofproto
->backer
->dpif
, flags
, subfacet
->key
,
5182 subfacet
->key_len
, actions
, actions_len
, stats
);
5185 subfacet_reset_dp_stats(subfacet
, stats
);
5189 subfacet
->path
= path
;
5195 subfacet_reinstall(struct subfacet
*subfacet
, struct dpif_flow_stats
*stats
)
5197 return subfacet_install(subfacet
, subfacet
->actions
, subfacet
->actions_len
,
5198 stats
, subfacet
->slow
);
5201 /* If 'subfacet' is installed in the datapath, uninstalls it. */
5203 subfacet_uninstall(struct subfacet
*subfacet
)
5205 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
5206 struct rule_dpif
*rule
= subfacet
->facet
->rule
;
5207 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5208 struct dpif_flow_stats stats
;
5211 error
= dpif_flow_del(ofproto
->backer
->dpif
, subfacet
->key
,
5212 subfacet
->key_len
, &stats
);
5213 subfacet_reset_dp_stats(subfacet
, &stats
);
5215 subfacet_update_stats(subfacet
, &stats
);
5217 subfacet
->path
= SF_NOT_INSTALLED
;
5219 ovs_assert(subfacet
->dp_packet_count
== 0);
5220 ovs_assert(subfacet
->dp_byte_count
== 0);
5224 /* Resets 'subfacet''s datapath statistics counters. This should be called
5225 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
5226 * non-null, it should contain the statistics returned by dpif when 'subfacet'
5227 * was reset in the datapath. 'stats' will be modified to include only
5228 * statistics new since 'subfacet' was last updated. */
5230 subfacet_reset_dp_stats(struct subfacet
*subfacet
,
5231 struct dpif_flow_stats
*stats
)
5234 && subfacet
->dp_packet_count
<= stats
->n_packets
5235 && subfacet
->dp_byte_count
<= stats
->n_bytes
) {
5236 stats
->n_packets
-= subfacet
->dp_packet_count
;
5237 stats
->n_bytes
-= subfacet
->dp_byte_count
;
5240 subfacet
->dp_packet_count
= 0;
5241 subfacet
->dp_byte_count
= 0;
5244 /* Updates 'subfacet''s used time. The caller is responsible for calling
5245 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
5247 subfacet_update_time(struct subfacet
*subfacet
, long long int used
)
5249 if (used
> subfacet
->used
) {
5250 subfacet
->used
= used
;
5251 facet_update_time(subfacet
->facet
, used
);
5255 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
5257 * Because of the meaning of a subfacet's counters, it only makes sense to do
5258 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
5259 * represents a packet that was sent by hand or if it represents statistics
5260 * that have been cleared out of the datapath. */
5262 subfacet_update_stats(struct subfacet
*subfacet
,
5263 const struct dpif_flow_stats
*stats
)
5265 if (stats
->n_packets
|| stats
->used
> subfacet
->used
) {
5266 struct facet
*facet
= subfacet
->facet
;
5268 subfacet_update_time(subfacet
, stats
->used
);
5269 facet
->packet_count
+= stats
->n_packets
;
5270 facet
->byte_count
+= stats
->n_bytes
;
5271 facet
->tcp_flags
|= stats
->tcp_flags
;
5272 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
5278 static struct rule_dpif
*
5279 rule_dpif_lookup(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
5281 struct rule_dpif
*rule
;
5283 rule
= rule_dpif_lookup__(ofproto
, flow
, 0);
5288 return rule_dpif_miss_rule(ofproto
, flow
);
5291 static struct rule_dpif
*
5292 rule_dpif_lookup__(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5295 struct cls_rule
*cls_rule
;
5296 struct classifier
*cls
;
5298 if (table_id
>= N_TABLES
) {
5302 cls
= &ofproto
->up
.tables
[table_id
].cls
;
5303 if (flow
->nw_frag
& FLOW_NW_FRAG_ANY
5304 && ofproto
->up
.frag_handling
== OFPC_FRAG_NORMAL
) {
5305 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
5306 * are unavailable. */
5307 struct flow ofpc_normal_flow
= *flow
;
5308 ofpc_normal_flow
.tp_src
= htons(0);
5309 ofpc_normal_flow
.tp_dst
= htons(0);
5310 cls_rule
= classifier_lookup(cls
, &ofpc_normal_flow
);
5312 cls_rule
= classifier_lookup(cls
, flow
);
5314 return rule_dpif_cast(rule_from_cls_rule(cls_rule
));
5317 static struct rule_dpif
*
5318 rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
5320 struct ofport_dpif
*port
;
5322 port
= get_ofp_port(ofproto
, flow
->in_port
);
5324 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, flow
->in_port
);
5325 return ofproto
->miss_rule
;
5328 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_PACKET_IN
) {
5329 return ofproto
->no_packet_in_rule
;
5331 return ofproto
->miss_rule
;
5335 complete_operation(struct rule_dpif
*rule
)
5337 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5339 rule_invalidate(rule
);
5341 struct dpif_completion
*c
= xmalloc(sizeof *c
);
5342 c
->op
= rule
->up
.pending
;
5343 list_push_back(&ofproto
->completions
, &c
->list_node
);
5345 ofoperation_complete(rule
->up
.pending
, 0);
5349 static struct rule
*
5352 struct rule_dpif
*rule
= xmalloc(sizeof *rule
);
5357 rule_dealloc(struct rule
*rule_
)
5359 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5364 rule_construct(struct rule
*rule_
)
5366 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5367 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5368 struct rule_dpif
*victim
;
5371 rule
->packet_count
= 0;
5372 rule
->byte_count
= 0;
5374 victim
= rule_dpif_cast(ofoperation_get_victim(rule
->up
.pending
));
5375 if (victim
&& !list_is_empty(&victim
->facets
)) {
5376 struct facet
*facet
;
5378 rule
->facets
= victim
->facets
;
5379 list_moved(&rule
->facets
);
5380 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
5381 /* XXX: We're only clearing our local counters here. It's possible
5382 * that quite a few packets are unaccounted for in the datapath
5383 * statistics. These will be accounted to the new rule instead of
5384 * cleared as required. This could be fixed by clearing out the
5385 * datapath statistics for this facet, but currently it doesn't
5387 facet_reset_counters(facet
);
5391 /* Must avoid list_moved() in this case. */
5392 list_init(&rule
->facets
);
5395 table_id
= rule
->up
.table_id
;
5397 rule
->tag
= victim
->tag
;
5398 } else if (table_id
== 0) {
5403 miniflow_expand(&rule
->up
.cr
.match
.flow
, &flow
);
5404 rule
->tag
= rule_calculate_tag(&flow
, &rule
->up
.cr
.match
.mask
,
5405 ofproto
->tables
[table_id
].basis
);
5408 complete_operation(rule
);
5413 rule_destruct(struct rule
*rule_
)
5415 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5416 struct facet
*facet
, *next_facet
;
5418 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
5419 facet_revalidate(facet
);
5422 complete_operation(rule
);
5426 rule_get_stats(struct rule
*rule_
, uint64_t *packets
, uint64_t *bytes
)
5428 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule_
->ofproto
);
5429 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5430 struct facet
*facet
;
5432 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
5433 facet_push_stats(facet
);
5436 /* Start from historical data for 'rule' itself that are no longer tracked
5437 * in facets. This counts, for example, facets that have expired. */
5438 *packets
= rule
->packet_count
;
5439 *bytes
= rule
->byte_count
;
5441 /* Add any statistics that are tracked by facets. This includes
5442 * statistical data recently updated by ofproto_update_stats() as well as
5443 * stats for packets that were executed "by hand" via dpif_execute(). */
5444 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
5445 *packets
+= facet
->packet_count
;
5446 *bytes
+= facet
->byte_count
;
5451 rule_dpif_execute(struct rule_dpif
*rule
, const struct flow
*flow
,
5452 struct ofpbuf
*packet
)
5454 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5455 struct initial_vals initial_vals
;
5456 struct dpif_flow_stats stats
;
5457 struct action_xlate_ctx ctx
;
5458 uint64_t odp_actions_stub
[1024 / 8];
5459 struct ofpbuf odp_actions
;
5461 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
5462 rule_credit_stats(rule
, &stats
);
5464 initial_vals
.vlan_tci
= flow
->vlan_tci
;
5465 initial_vals
.tunnel_ip_tos
= flow
->tunnel
.ip_tos
;
5466 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
5467 action_xlate_ctx_init(&ctx
, ofproto
, flow
, &initial_vals
,
5468 rule
, stats
.tcp_flags
, packet
);
5469 ctx
.resubmit_stats
= &stats
;
5470 xlate_actions(&ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, &odp_actions
);
5472 execute_odp_actions(ofproto
, flow
, odp_actions
.data
,
5473 odp_actions
.size
, packet
);
5475 ofpbuf_uninit(&odp_actions
);
5479 rule_execute(struct rule
*rule
, const struct flow
*flow
,
5480 struct ofpbuf
*packet
)
5482 rule_dpif_execute(rule_dpif_cast(rule
), flow
, packet
);
5483 ofpbuf_delete(packet
);
5488 rule_modify_actions(struct rule
*rule_
)
5490 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5492 complete_operation(rule
);
5495 /* Sends 'packet' out 'ofport'.
5496 * May modify 'packet'.
5497 * Returns 0 if successful, otherwise a positive errno value. */
5499 send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
5501 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
5502 uint64_t odp_actions_stub
[1024 / 8];
5503 struct ofpbuf key
, odp_actions
;
5504 struct odputil_keybuf keybuf
;
5509 flow_extract(packet
, 0, 0, NULL
, OFPP_LOCAL
, &flow
);
5510 if (netdev_vport_is_patch(ofport
->up
.netdev
)) {
5511 struct ofproto_dpif
*peer_ofproto
;
5512 struct dpif_flow_stats stats
;
5513 struct ofport_dpif
*peer
;
5514 struct rule_dpif
*rule
;
5516 peer
= ofport_get_peer(ofport
);
5521 dpif_flow_stats_extract(&flow
, packet
, time_msec(), &stats
);
5522 netdev_vport_inc_tx(ofport
->up
.netdev
, &stats
);
5523 netdev_vport_inc_rx(peer
->up
.netdev
, &stats
);
5525 flow
.in_port
= peer
->up
.ofp_port
;
5526 peer_ofproto
= ofproto_dpif_cast(peer
->up
.ofproto
);
5527 rule
= rule_dpif_lookup(peer_ofproto
, &flow
);
5528 rule_dpif_execute(rule
, &flow
, packet
);
5533 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
5535 if (ofport
->tnl_port
) {
5536 struct dpif_flow_stats stats
;
5538 odp_port
= tnl_port_send(ofport
->tnl_port
, &flow
);
5539 if (odp_port
== OVSP_NONE
) {
5543 dpif_flow_stats_extract(&flow
, packet
, time_msec(), &stats
);
5544 netdev_vport_inc_tx(ofport
->up
.netdev
, &stats
);
5545 odp_put_tunnel_action(&flow
.tunnel
, &odp_actions
);
5546 odp_put_skb_mark_action(flow
.skb_mark
, &odp_actions
);
5548 odp_port
= vsp_realdev_to_vlandev(ofproto
, ofport
->odp_port
,
5550 if (odp_port
!= ofport
->odp_port
) {
5551 eth_pop_vlan(packet
);
5552 flow
.vlan_tci
= htons(0);
5556 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
5557 odp_flow_key_from_flow(&key
, &flow
,
5558 ofp_port_to_odp_port(ofproto
, flow
.in_port
));
5560 compose_sflow_action(ofproto
, &odp_actions
, &flow
, odp_port
);
5562 nl_msg_put_u32(&odp_actions
, OVS_ACTION_ATTR_OUTPUT
, odp_port
);
5563 error
= dpif_execute(ofproto
->backer
->dpif
,
5565 odp_actions
.data
, odp_actions
.size
,
5567 ofpbuf_uninit(&odp_actions
);
5570 VLOG_WARN_RL(&rl
, "%s: failed to send packet on port %"PRIu32
" (%s)",
5571 ofproto
->up
.name
, odp_port
, strerror(error
));
5573 ofproto_update_local_port_stats(ofport
->up
.ofproto
, packet
->size
, 0);
5577 /* OpenFlow to datapath action translation. */
5579 static bool may_receive(const struct ofport_dpif
*, struct action_xlate_ctx
*);
5580 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
5581 struct action_xlate_ctx
*);
5582 static void xlate_normal(struct action_xlate_ctx
*);
5584 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5585 * The action will state 'slow' as the reason that the action is in the slow
5586 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5587 * dump-flows" output to see why a flow is in the slow path.)
5589 * The 'stub_size' bytes in 'stub' will be used to store the action.
5590 * 'stub_size' must be large enough for the action.
5592 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5595 compose_slow_path(const struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5596 enum slow_path_reason slow
,
5597 uint64_t *stub
, size_t stub_size
,
5598 const struct nlattr
**actionsp
, size_t *actions_lenp
)
5600 union user_action_cookie cookie
;
5603 cookie
.type
= USER_ACTION_COOKIE_SLOW_PATH
;
5604 cookie
.slow_path
.unused
= 0;
5605 cookie
.slow_path
.reason
= slow
;
5607 ofpbuf_use_stack(&buf
, stub
, stub_size
);
5608 if (slow
& (SLOW_CFM
| SLOW_LACP
| SLOW_STP
)) {
5609 uint32_t pid
= dpif_port_get_pid(ofproto
->backer
->dpif
, UINT32_MAX
);
5610 odp_put_userspace_action(pid
, &cookie
, sizeof cookie
, &buf
);
5612 put_userspace_action(ofproto
, &buf
, flow
, &cookie
);
5614 *actionsp
= buf
.data
;
5615 *actions_lenp
= buf
.size
;
5619 put_userspace_action(const struct ofproto_dpif
*ofproto
,
5620 struct ofpbuf
*odp_actions
,
5621 const struct flow
*flow
,
5622 const union user_action_cookie
*cookie
)
5626 pid
= dpif_port_get_pid(ofproto
->backer
->dpif
,
5627 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
5629 return odp_put_userspace_action(pid
, cookie
, sizeof *cookie
, odp_actions
);
5633 compose_sflow_cookie(const struct ofproto_dpif
*ofproto
,
5634 ovs_be16 vlan_tci
, uint32_t odp_port
,
5635 unsigned int n_outputs
, union user_action_cookie
*cookie
)
5639 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
5640 cookie
->sflow
.vlan_tci
= vlan_tci
;
5642 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
5643 * port information") for the interpretation of cookie->output. */
5644 switch (n_outputs
) {
5646 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
5647 cookie
->sflow
.output
= 0x40000000 | 256;
5651 ifindex
= dpif_sflow_odp_port_to_ifindex(ofproto
->sflow
, odp_port
);
5653 cookie
->sflow
.output
= ifindex
;
5658 /* 0x80000000 means "multiple output ports. */
5659 cookie
->sflow
.output
= 0x80000000 | n_outputs
;
5664 /* Compose SAMPLE action for sFlow. */
5666 compose_sflow_action(const struct ofproto_dpif
*ofproto
,
5667 struct ofpbuf
*odp_actions
,
5668 const struct flow
*flow
,
5671 uint32_t probability
;
5672 union user_action_cookie cookie
;
5673 size_t sample_offset
, actions_offset
;
5676 if (!ofproto
->sflow
|| flow
->in_port
== OFPP_NONE
) {
5680 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
5682 /* Number of packets out of UINT_MAX to sample. */
5683 probability
= dpif_sflow_get_probability(ofproto
->sflow
);
5684 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
5686 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
5687 compose_sflow_cookie(ofproto
, htons(0), odp_port
,
5688 odp_port
== OVSP_NONE
? 0 : 1, &cookie
);
5689 cookie_offset
= put_userspace_action(ofproto
, odp_actions
, flow
, &cookie
);
5691 nl_msg_end_nested(odp_actions
, actions_offset
);
5692 nl_msg_end_nested(odp_actions
, sample_offset
);
5693 return cookie_offset
;
5696 /* SAMPLE action must be first action in any given list of actions.
5697 * At this point we do not have all information required to build it. So try to
5698 * build sample action as complete as possible. */
5700 add_sflow_action(struct action_xlate_ctx
*ctx
)
5702 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->ofproto
,
5704 &ctx
->flow
, OVSP_NONE
);
5705 ctx
->sflow_odp_port
= 0;
5706 ctx
->sflow_n_outputs
= 0;
5709 /* Fix SAMPLE action according to data collected while composing ODP actions.
5710 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
5711 * USERSPACE action's user-cookie which is required for sflow. */
5713 fix_sflow_action(struct action_xlate_ctx
*ctx
)
5715 const struct flow
*base
= &ctx
->base_flow
;
5716 union user_action_cookie
*cookie
;
5718 if (!ctx
->user_cookie_offset
) {
5722 cookie
= ofpbuf_at(ctx
->odp_actions
, ctx
->user_cookie_offset
,
5724 ovs_assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
5726 compose_sflow_cookie(ctx
->ofproto
, base
->vlan_tci
,
5727 ctx
->sflow_odp_port
, ctx
->sflow_n_outputs
, cookie
);
5731 compose_output_action__(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
,
5734 const struct ofport_dpif
*ofport
= get_ofp_port(ctx
->ofproto
, ofp_port
);
5735 ovs_be16 flow_vlan_tci
= ctx
->flow
.vlan_tci
;
5736 ovs_be64 flow_tun_id
= ctx
->flow
.tunnel
.tun_id
;
5737 uint8_t flow_nw_tos
= ctx
->flow
.nw_tos
;
5738 struct priority_to_dscp
*pdscp
;
5739 uint32_t out_port
, odp_port
;
5741 /* If 'struct flow' gets additional metadata, we'll need to zero it out
5742 * before traversing a patch port. */
5743 BUILD_ASSERT_DECL(FLOW_WC_SEQ
== 20);
5746 xlate_report(ctx
, "Nonexistent output port");
5748 } else if (ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FWD
) {
5749 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
5751 } else if (check_stp
&& !stp_forward_in_state(ofport
->stp_state
)) {
5752 xlate_report(ctx
, "STP not in forwarding state, skipping output");
5756 if (netdev_vport_is_patch(ofport
->up
.netdev
)) {
5757 struct ofport_dpif
*peer
= ofport_get_peer(ofport
);
5758 struct flow old_flow
= ctx
->flow
;
5759 const struct ofproto_dpif
*peer_ofproto
;
5760 enum slow_path_reason special
;
5761 struct ofport_dpif
*in_port
;
5764 xlate_report(ctx
, "Nonexistent patch port peer");
5768 peer_ofproto
= ofproto_dpif_cast(peer
->up
.ofproto
);
5769 if (peer_ofproto
->backer
!= ctx
->ofproto
->backer
) {
5770 xlate_report(ctx
, "Patch port peer on a different datapath");
5774 ctx
->ofproto
= ofproto_dpif_cast(peer
->up
.ofproto
);
5775 ctx
->flow
.in_port
= peer
->up
.ofp_port
;
5776 ctx
->flow
.metadata
= htonll(0);
5777 memset(&ctx
->flow
.tunnel
, 0, sizeof ctx
->flow
.tunnel
);
5778 memset(ctx
->flow
.regs
, 0, sizeof ctx
->flow
.regs
);
5780 in_port
= get_ofp_port(ctx
->ofproto
, ctx
->flow
.in_port
);
5781 special
= process_special(ctx
->ofproto
, &ctx
->flow
, in_port
,
5784 ctx
->slow
|= special
;
5785 } else if (!in_port
|| may_receive(in_port
, ctx
)) {
5786 if (!in_port
|| stp_forward_in_state(in_port
->stp_state
)) {
5787 xlate_table_action(ctx
, ctx
->flow
.in_port
, 0, true);
5789 /* Forwarding is disabled by STP. Let OFPP_NORMAL and the
5790 * learning action look at the packet, then drop it. */
5791 struct flow old_base_flow
= ctx
->base_flow
;
5792 size_t old_size
= ctx
->odp_actions
->size
;
5793 xlate_table_action(ctx
, ctx
->flow
.in_port
, 0, true);
5794 ctx
->base_flow
= old_base_flow
;
5795 ctx
->odp_actions
->size
= old_size
;
5799 ctx
->flow
= old_flow
;
5800 ctx
->ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
5802 if (ctx
->resubmit_stats
) {
5803 netdev_vport_inc_tx(ofport
->up
.netdev
, ctx
->resubmit_stats
);
5804 netdev_vport_inc_rx(peer
->up
.netdev
, ctx
->resubmit_stats
);
5810 pdscp
= get_priority(ofport
, ctx
->flow
.skb_priority
);
5812 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
5813 ctx
->flow
.nw_tos
|= pdscp
->dscp
;
5816 if (ofport
->tnl_port
) {
5817 odp_port
= tnl_port_send(ofport
->tnl_port
, &ctx
->flow
);
5818 if (odp_port
== OVSP_NONE
) {
5819 xlate_report(ctx
, "Tunneling decided against output");
5823 if (ctx
->resubmit_stats
) {
5824 netdev_vport_inc_tx(ofport
->up
.netdev
, ctx
->resubmit_stats
);
5826 out_port
= odp_port
;
5827 commit_odp_tunnel_action(&ctx
->flow
, &ctx
->base_flow
,
5830 odp_port
= ofport
->odp_port
;
5831 out_port
= vsp_realdev_to_vlandev(ctx
->ofproto
, odp_port
,
5832 ctx
->flow
.vlan_tci
);
5833 if (out_port
!= odp_port
) {
5834 ctx
->flow
.vlan_tci
= htons(0);
5836 ctx
->flow
.skb_mark
&= ~IPSEC_MARK
;
5838 commit_odp_actions(&ctx
->flow
, &ctx
->base_flow
, ctx
->odp_actions
);
5839 nl_msg_put_u32(ctx
->odp_actions
, OVS_ACTION_ATTR_OUTPUT
, out_port
);
5841 ctx
->sflow_odp_port
= odp_port
;
5842 ctx
->sflow_n_outputs
++;
5843 ctx
->nf_output_iface
= ofp_port
;
5844 ctx
->flow
.tunnel
.tun_id
= flow_tun_id
;
5845 ctx
->flow
.vlan_tci
= flow_vlan_tci
;
5846 ctx
->flow
.nw_tos
= flow_nw_tos
;
5850 compose_output_action(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
)
5852 compose_output_action__(ctx
, ofp_port
, true);
5856 tag_the_flow(struct action_xlate_ctx
*ctx
, struct rule_dpif
*rule
)
5858 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
5859 uint8_t table_id
= ctx
->table_id
;
5861 if (table_id
> 0 && table_id
< N_TABLES
) {
5862 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
5863 if (table
->other_table
) {
5864 ctx
->tags
|= (rule
&& rule
->tag
5866 : rule_calculate_tag(&ctx
->flow
,
5867 &table
->other_table
->mask
,
5873 /* Common rule processing in one place to avoid duplicating code. */
5874 static struct rule_dpif
*
5875 ctx_rule_hooks(struct action_xlate_ctx
*ctx
, struct rule_dpif
*rule
,
5878 if (ctx
->resubmit_hook
) {
5879 ctx
->resubmit_hook(ctx
, rule
);
5881 if (rule
== NULL
&& may_packet_in
) {
5883 * check if table configuration flags
5884 * OFPTC_TABLE_MISS_CONTROLLER, default.
5885 * OFPTC_TABLE_MISS_CONTINUE,
5886 * OFPTC_TABLE_MISS_DROP
5887 * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do?
5889 rule
= rule_dpif_miss_rule(ctx
->ofproto
, &ctx
->flow
);
5891 if (rule
&& ctx
->resubmit_stats
) {
5892 rule_credit_stats(rule
, ctx
->resubmit_stats
);
5898 xlate_table_action(struct action_xlate_ctx
*ctx
,
5899 uint16_t in_port
, uint8_t table_id
, bool may_packet_in
)
5901 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
5902 struct rule_dpif
*rule
;
5903 uint16_t old_in_port
= ctx
->flow
.in_port
;
5904 uint8_t old_table_id
= ctx
->table_id
;
5906 ctx
->table_id
= table_id
;
5908 /* Look up a flow with 'in_port' as the input port. */
5909 ctx
->flow
.in_port
= in_port
;
5910 rule
= rule_dpif_lookup__(ctx
->ofproto
, &ctx
->flow
, table_id
);
5912 tag_the_flow(ctx
, rule
);
5914 /* Restore the original input port. Otherwise OFPP_NORMAL and
5915 * OFPP_IN_PORT will have surprising behavior. */
5916 ctx
->flow
.in_port
= old_in_port
;
5918 rule
= ctx_rule_hooks(ctx
, rule
, may_packet_in
);
5921 struct rule_dpif
*old_rule
= ctx
->rule
;
5925 do_xlate_actions(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, ctx
);
5926 ctx
->rule
= old_rule
;
5930 ctx
->table_id
= old_table_id
;
5932 static struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
5934 VLOG_ERR_RL(&recurse_rl
, "resubmit actions recursed over %d times",
5935 MAX_RESUBMIT_RECURSION
);
5936 ctx
->max_resubmit_trigger
= true;
5941 xlate_ofpact_resubmit(struct action_xlate_ctx
*ctx
,
5942 const struct ofpact_resubmit
*resubmit
)
5947 in_port
= resubmit
->in_port
;
5948 if (in_port
== OFPP_IN_PORT
) {
5949 in_port
= ctx
->flow
.in_port
;
5952 table_id
= resubmit
->table_id
;
5953 if (table_id
== 255) {
5954 table_id
= ctx
->table_id
;
5957 xlate_table_action(ctx
, in_port
, table_id
, false);
5961 flood_packets(struct action_xlate_ctx
*ctx
, bool all
)
5963 struct ofport_dpif
*ofport
;
5965 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ctx
->ofproto
->up
.ports
) {
5966 uint16_t ofp_port
= ofport
->up
.ofp_port
;
5968 if (ofp_port
== ctx
->flow
.in_port
) {
5973 compose_output_action__(ctx
, ofp_port
, false);
5974 } else if (!(ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
)) {
5975 compose_output_action(ctx
, ofp_port
);
5979 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
5983 execute_controller_action(struct action_xlate_ctx
*ctx
, int len
,
5984 enum ofp_packet_in_reason reason
,
5985 uint16_t controller_id
)
5987 struct ofputil_packet_in pin
;
5988 struct ofpbuf
*packet
;
5990 ctx
->slow
|= SLOW_CONTROLLER
;
5995 packet
= ofpbuf_clone(ctx
->packet
);
5997 if (packet
->l2
&& packet
->l3
) {
5998 struct eth_header
*eh
;
5999 uint16_t mpls_depth
;
6001 eth_pop_vlan(packet
);
6004 memcpy(eh
->eth_src
, ctx
->flow
.dl_src
, sizeof eh
->eth_src
);
6005 memcpy(eh
->eth_dst
, ctx
->flow
.dl_dst
, sizeof eh
->eth_dst
);
6007 if (ctx
->flow
.vlan_tci
& htons(VLAN_CFI
)) {
6008 eth_push_vlan(packet
, ctx
->flow
.vlan_tci
);
6011 mpls_depth
= eth_mpls_depth(packet
);
6013 if (mpls_depth
< ctx
->flow
.mpls_depth
) {
6014 push_mpls(packet
, ctx
->flow
.dl_type
, ctx
->flow
.mpls_lse
);
6015 } else if (mpls_depth
> ctx
->flow
.mpls_depth
) {
6016 pop_mpls(packet
, ctx
->flow
.dl_type
);
6017 } else if (mpls_depth
) {
6018 set_mpls_lse(packet
, ctx
->flow
.mpls_lse
);
6022 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6023 packet_set_ipv4(packet
, ctx
->flow
.nw_src
, ctx
->flow
.nw_dst
,
6024 ctx
->flow
.nw_tos
, ctx
->flow
.nw_ttl
);
6028 if (ctx
->flow
.nw_proto
== IPPROTO_TCP
) {
6029 packet_set_tcp_port(packet
, ctx
->flow
.tp_src
,
6031 } else if (ctx
->flow
.nw_proto
== IPPROTO_UDP
) {
6032 packet_set_udp_port(packet
, ctx
->flow
.tp_src
,
6039 pin
.packet
= packet
->data
;
6040 pin
.packet_len
= packet
->size
;
6041 pin
.reason
= reason
;
6042 pin
.controller_id
= controller_id
;
6043 pin
.table_id
= ctx
->table_id
;
6044 pin
.cookie
= ctx
->rule
? ctx
->rule
->up
.flow_cookie
: 0;
6047 flow_get_metadata(&ctx
->flow
, &pin
.fmd
);
6049 connmgr_send_packet_in(ctx
->ofproto
->up
.connmgr
, &pin
);
6050 ofpbuf_delete(packet
);
6054 execute_mpls_push_action(struct action_xlate_ctx
*ctx
, ovs_be16 eth_type
)
6056 ovs_assert(eth_type_mpls(eth_type
));
6058 if (ctx
->base_flow
.mpls_depth
) {
6059 ctx
->flow
.mpls_lse
&= ~htonl(MPLS_BOS_MASK
);
6060 ctx
->flow
.mpls_depth
++;
6065 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
6066 label
= htonl(0x2); /* IPV6 Explicit Null. */
6068 label
= htonl(0x0); /* IPV4 Explicit Null. */
6070 tc
= (ctx
->flow
.nw_tos
& IP_DSCP_MASK
) >> 2;
6071 ttl
= ctx
->flow
.nw_ttl
? ctx
->flow
.nw_ttl
: 0x40;
6072 ctx
->flow
.mpls_lse
= set_mpls_lse_values(ttl
, tc
, 1, label
);
6073 ctx
->flow
.mpls_depth
= 1;
6075 ctx
->flow
.dl_type
= eth_type
;
6079 execute_mpls_pop_action(struct action_xlate_ctx
*ctx
, ovs_be16 eth_type
)
6081 ovs_assert(eth_type_mpls(ctx
->flow
.dl_type
));
6082 ovs_assert(!eth_type_mpls(eth_type
));
6084 if (ctx
->flow
.mpls_depth
) {
6085 ctx
->flow
.mpls_depth
--;
6086 ctx
->flow
.mpls_lse
= htonl(0);
6087 if (!ctx
->flow
.mpls_depth
) {
6088 ctx
->flow
.dl_type
= eth_type
;
6094 compose_dec_ttl(struct action_xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
6096 if (ctx
->flow
.dl_type
!= htons(ETH_TYPE_IP
) &&
6097 ctx
->flow
.dl_type
!= htons(ETH_TYPE_IPV6
)) {
6101 if (ctx
->flow
.nw_ttl
> 1) {
6107 for (i
= 0; i
< ids
->n_controllers
; i
++) {
6108 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
6112 /* Stop processing for current table. */
6118 execute_set_mpls_ttl_action(struct action_xlate_ctx
*ctx
, uint8_t ttl
)
6120 if (!eth_type_mpls(ctx
->flow
.dl_type
)) {
6124 set_mpls_lse_ttl(&ctx
->flow
.mpls_lse
, ttl
);
6129 execute_dec_mpls_ttl_action(struct action_xlate_ctx
*ctx
)
6131 uint8_t ttl
= mpls_lse_to_ttl(ctx
->flow
.mpls_lse
);
6133 if (!eth_type_mpls(ctx
->flow
.dl_type
)) {
6139 set_mpls_lse_ttl(&ctx
->flow
.mpls_lse
, ttl
);
6142 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
6144 /* Stop processing for current table. */
6150 xlate_output_action(struct action_xlate_ctx
*ctx
,
6151 uint16_t port
, uint16_t max_len
, bool may_packet_in
)
6153 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
6155 ctx
->nf_output_iface
= NF_OUT_DROP
;
6159 compose_output_action(ctx
, ctx
->flow
.in_port
);
6162 xlate_table_action(ctx
, ctx
->flow
.in_port
, 0, may_packet_in
);
6168 flood_packets(ctx
, false);
6171 flood_packets(ctx
, true);
6173 case OFPP_CONTROLLER
:
6174 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
6180 if (port
!= ctx
->flow
.in_port
) {
6181 compose_output_action(ctx
, port
);
6183 xlate_report(ctx
, "skipping output to input port");
6188 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
6189 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
6190 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
6191 ctx
->nf_output_iface
= prev_nf_output_iface
;
6192 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
6193 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
6194 ctx
->nf_output_iface
= NF_OUT_MULTI
;
6199 xlate_output_reg_action(struct action_xlate_ctx
*ctx
,
6200 const struct ofpact_output_reg
*or)
6202 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->flow
);
6203 if (port
<= UINT16_MAX
) {
6204 xlate_output_action(ctx
, port
, or->max_len
, false);
6209 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
6210 const struct ofpact_enqueue
*enqueue
)
6212 uint16_t ofp_port
= enqueue
->port
;
6213 uint32_t queue_id
= enqueue
->queue
;
6214 uint32_t flow_priority
, priority
;
6217 /* Translate queue to priority. */
6218 error
= dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
6219 queue_id
, &priority
);
6221 /* Fall back to ordinary output action. */
6222 xlate_output_action(ctx
, enqueue
->port
, 0, false);
6226 /* Check output port. */
6227 if (ofp_port
== OFPP_IN_PORT
) {
6228 ofp_port
= ctx
->flow
.in_port
;
6229 } else if (ofp_port
== ctx
->flow
.in_port
) {
6233 /* Add datapath actions. */
6234 flow_priority
= ctx
->flow
.skb_priority
;
6235 ctx
->flow
.skb_priority
= priority
;
6236 compose_output_action(ctx
, ofp_port
);
6237 ctx
->flow
.skb_priority
= flow_priority
;
6239 /* Update NetFlow output port. */
6240 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
6241 ctx
->nf_output_iface
= ofp_port
;
6242 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
6243 ctx
->nf_output_iface
= NF_OUT_MULTI
;
6248 xlate_set_queue_action(struct action_xlate_ctx
*ctx
, uint32_t queue_id
)
6250 uint32_t skb_priority
;
6252 if (!dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
6253 queue_id
, &skb_priority
)) {
6254 ctx
->flow
.skb_priority
= skb_priority
;
6256 /* Couldn't translate queue to a priority. Nothing to do. A warning
6257 * has already been logged. */
6261 struct xlate_reg_state
{
6267 slave_enabled_cb(uint16_t ofp_port
, void *ofproto_
)
6269 struct ofproto_dpif
*ofproto
= ofproto_
;
6270 struct ofport_dpif
*port
;
6280 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
6283 port
= get_ofp_port(ofproto
, ofp_port
);
6284 return port
? port
->may_enable
: false;
6289 xlate_bundle_action(struct action_xlate_ctx
*ctx
,
6290 const struct ofpact_bundle
*bundle
)
6294 port
= bundle_execute(bundle
, &ctx
->flow
, slave_enabled_cb
, ctx
->ofproto
);
6295 if (bundle
->dst
.field
) {
6296 nxm_reg_load(&bundle
->dst
, port
, &ctx
->flow
);
6298 xlate_output_action(ctx
, port
, 0, false);
6303 xlate_learn_action(struct action_xlate_ctx
*ctx
,
6304 const struct ofpact_learn
*learn
)
6306 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 1);
6307 struct ofputil_flow_mod fm
;
6308 uint64_t ofpacts_stub
[1024 / 8];
6309 struct ofpbuf ofpacts
;
6312 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
6313 learn_execute(learn
, &ctx
->flow
, &fm
, &ofpacts
);
6315 error
= ofproto_flow_mod(&ctx
->ofproto
->up
, &fm
);
6316 if (error
&& !VLOG_DROP_WARN(&rl
)) {
6317 VLOG_WARN("learning action failed to modify flow table (%s)",
6318 ofperr_get_name(error
));
6321 ofpbuf_uninit(&ofpacts
);
6324 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
6325 * means "infinite". */
6327 reduce_timeout(uint16_t max
, uint16_t *timeout
)
6329 if (max
&& (!*timeout
|| *timeout
> max
)) {
6335 xlate_fin_timeout(struct action_xlate_ctx
*ctx
,
6336 const struct ofpact_fin_timeout
*oft
)
6338 if (ctx
->tcp_flags
& (TCP_FIN
| TCP_RST
) && ctx
->rule
) {
6339 struct rule_dpif
*rule
= ctx
->rule
;
6341 reduce_timeout(oft
->fin_idle_timeout
, &rule
->up
.idle_timeout
);
6342 reduce_timeout(oft
->fin_hard_timeout
, &rule
->up
.hard_timeout
);
6347 may_receive(const struct ofport_dpif
*port
, struct action_xlate_ctx
*ctx
)
6349 if (port
->up
.pp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
6350 ? OFPUTIL_PC_NO_RECV_STP
6351 : OFPUTIL_PC_NO_RECV
)) {
6355 /* Only drop packets here if both forwarding and learning are
6356 * disabled. If just learning is enabled, we need to have
6357 * OFPP_NORMAL and the learning action have a look at the packet
6358 * before we can drop it. */
6359 if (!stp_forward_in_state(port
->stp_state
)
6360 && !stp_learn_in_state(port
->stp_state
)) {
6368 tunnel_ecn_ok(struct action_xlate_ctx
*ctx
)
6370 if (is_ip_any(&ctx
->base_flow
)
6371 && (ctx
->base_flow
.tunnel
.ip_tos
& IP_ECN_MASK
) == IP_ECN_CE
) {
6372 if ((ctx
->base_flow
.nw_tos
& IP_ECN_MASK
) == IP_ECN_NOT_ECT
) {
6373 VLOG_WARN_RL(&rl
, "dropping tunnel packet marked ECN CE"
6374 " but is not ECN capable");
6377 /* Set the ECN CE value in the tunneled packet. */
6378 ctx
->flow
.nw_tos
|= IP_ECN_CE
;
6386 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
6387 struct action_xlate_ctx
*ctx
)
6389 bool was_evictable
= true;
6390 const struct ofpact
*a
;
6393 /* Don't let the rule we're working on get evicted underneath us. */
6394 was_evictable
= ctx
->rule
->up
.evictable
;
6395 ctx
->rule
->up
.evictable
= false;
6398 do_xlate_actions_again
:
6399 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
6400 struct ofpact_controller
*controller
;
6401 const struct ofpact_metadata
*metadata
;
6409 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
6410 ofpact_get_OUTPUT(a
)->max_len
, true);
6413 case OFPACT_CONTROLLER
:
6414 controller
= ofpact_get_CONTROLLER(a
);
6415 execute_controller_action(ctx
, controller
->max_len
,
6417 controller
->controller_id
);
6420 case OFPACT_ENQUEUE
:
6421 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
6424 case OFPACT_SET_VLAN_VID
:
6425 ctx
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
6426 ctx
->flow
.vlan_tci
|= (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
6430 case OFPACT_SET_VLAN_PCP
:
6431 ctx
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
6432 ctx
->flow
.vlan_tci
|= htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
6437 case OFPACT_STRIP_VLAN
:
6438 ctx
->flow
.vlan_tci
= htons(0);
6441 case OFPACT_PUSH_VLAN
:
6442 /* XXX 802.1AD(QinQ) */
6443 ctx
->flow
.vlan_tci
= htons(VLAN_CFI
);
6446 case OFPACT_SET_ETH_SRC
:
6447 memcpy(ctx
->flow
.dl_src
, ofpact_get_SET_ETH_SRC(a
)->mac
,
6451 case OFPACT_SET_ETH_DST
:
6452 memcpy(ctx
->flow
.dl_dst
, ofpact_get_SET_ETH_DST(a
)->mac
,
6456 case OFPACT_SET_IPV4_SRC
:
6457 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6458 ctx
->flow
.nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
6462 case OFPACT_SET_IPV4_DST
:
6463 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6464 ctx
->flow
.nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
6468 case OFPACT_SET_IPV4_DSCP
:
6469 /* OpenFlow 1.0 only supports IPv4. */
6470 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6471 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
6472 ctx
->flow
.nw_tos
|= ofpact_get_SET_IPV4_DSCP(a
)->dscp
;
6476 case OFPACT_SET_L4_SRC_PORT
:
6477 if (is_ip_any(&ctx
->flow
)) {
6478 ctx
->flow
.tp_src
= htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
6482 case OFPACT_SET_L4_DST_PORT
:
6483 if (is_ip_any(&ctx
->flow
)) {
6484 ctx
->flow
.tp_dst
= htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
6488 case OFPACT_RESUBMIT
:
6489 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
6492 case OFPACT_SET_TUNNEL
:
6493 ctx
->flow
.tunnel
.tun_id
= htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
6496 case OFPACT_SET_QUEUE
:
6497 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
6500 case OFPACT_POP_QUEUE
:
6501 ctx
->flow
.skb_priority
= ctx
->orig_skb_priority
;
6504 case OFPACT_REG_MOVE
:
6505 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), &ctx
->flow
);
6508 case OFPACT_REG_LOAD
:
6509 nxm_execute_reg_load(ofpact_get_REG_LOAD(a
), &ctx
->flow
);
6512 case OFPACT_STACK_PUSH
:
6513 nxm_execute_stack_push(ofpact_get_STACK_PUSH(a
), &ctx
->flow
,
6517 case OFPACT_STACK_POP
:
6518 nxm_execute_stack_pop(ofpact_get_STACK_POP(a
), &ctx
->flow
,
6522 case OFPACT_PUSH_MPLS
:
6523 execute_mpls_push_action(ctx
, ofpact_get_PUSH_MPLS(a
)->ethertype
);
6526 case OFPACT_POP_MPLS
:
6527 execute_mpls_pop_action(ctx
, ofpact_get_POP_MPLS(a
)->ethertype
);
6530 case OFPACT_SET_MPLS_TTL
:
6531 if (execute_set_mpls_ttl_action(ctx
, ofpact_get_SET_MPLS_TTL(a
)->ttl
)) {
6536 case OFPACT_DEC_MPLS_TTL
:
6537 if (execute_dec_mpls_ttl_action(ctx
)) {
6542 case OFPACT_DEC_TTL
:
6543 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
6549 /* Nothing to do. */
6552 case OFPACT_MULTIPATH
:
6553 multipath_execute(ofpact_get_MULTIPATH(a
), &ctx
->flow
);
6557 ctx
->ofproto
->has_bundle_action
= true;
6558 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
6561 case OFPACT_OUTPUT_REG
:
6562 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
6566 ctx
->has_learn
= true;
6567 if (ctx
->may_learn
) {
6568 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
6576 case OFPACT_FIN_TIMEOUT
:
6577 ctx
->has_fin_timeout
= true;
6578 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
6581 case OFPACT_CLEAR_ACTIONS
:
6583 * Nothing to do because writa-actions is not supported for now.
6584 * When writa-actions is supported, clear-actions also must
6585 * be supported at the same time.
6589 case OFPACT_WRITE_METADATA
:
6590 metadata
= ofpact_get_WRITE_METADATA(a
);
6591 ctx
->flow
.metadata
&= ~metadata
->mask
;
6592 ctx
->flow
.metadata
|= metadata
->metadata
& metadata
->mask
;
6595 case OFPACT_GOTO_TABLE
: {
6596 /* It is assumed that goto-table is the last action. */
6597 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
6598 struct rule_dpif
*rule
;
6600 ovs_assert(ctx
->table_id
< ogt
->table_id
);
6602 ctx
->table_id
= ogt
->table_id
;
6604 /* Look up a flow from the new table. */
6605 rule
= rule_dpif_lookup__(ctx
->ofproto
, &ctx
->flow
, ctx
->table_id
);
6607 tag_the_flow(ctx
, rule
);
6609 rule
= ctx_rule_hooks(ctx
, rule
, true);
6613 ctx
->rule
->up
.evictable
= was_evictable
;
6616 was_evictable
= rule
->up
.evictable
;
6617 rule
->up
.evictable
= false;
6619 /* Tail recursion removal. */
6620 ofpacts
= rule
->up
.ofpacts
;
6621 ofpacts_len
= rule
->up
.ofpacts_len
;
6622 goto do_xlate_actions_again
;
6631 ctx
->rule
->up
.evictable
= was_evictable
;
6636 action_xlate_ctx_init(struct action_xlate_ctx
*ctx
,
6637 struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
6638 const struct initial_vals
*initial_vals
,
6639 struct rule_dpif
*rule
,
6640 uint8_t tcp_flags
, const struct ofpbuf
*packet
)
6642 ovs_be64 initial_tun_id
= flow
->tunnel
.tun_id
;
6644 /* Flow initialization rules:
6645 * - 'base_flow' must match the kernel's view of the packet at the
6646 * time that action processing starts. 'flow' represents any
6647 * transformations we wish to make through actions.
6648 * - By default 'base_flow' and 'flow' are the same since the input
6649 * packet matches the output before any actions are applied.
6650 * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
6651 * of the received packet as seen by the kernel. If we later output
6652 * to another device without any modifications this will cause us to
6653 * insert a new tag since the original one was stripped off by the
6655 * - Tunnel 'flow' is largely cleared when transitioning between
6656 * the input and output stages since it does not make sense to output
6657 * a packet with the exact headers that it was received with (i.e.
6658 * the destination IP is us). The one exception is the tun_id, which
6659 * is preserved to allow use in later resubmit lookups and loads into
6661 * - Tunnel 'base_flow' is completely cleared since that is what the
6662 * kernel does. If we wish to maintain the original values an action
6663 * needs to be generated. */
6665 ctx
->ofproto
= ofproto
;
6667 memset(&ctx
->flow
.tunnel
, 0, sizeof ctx
->flow
.tunnel
);
6668 ctx
->base_flow
= ctx
->flow
;
6669 ctx
->base_flow
.vlan_tci
= initial_vals
->vlan_tci
;
6670 ctx
->base_flow
.tunnel
.ip_tos
= initial_vals
->tunnel_ip_tos
;
6671 ctx
->flow
.tunnel
.tun_id
= initial_tun_id
;
6673 ctx
->packet
= packet
;
6674 ctx
->may_learn
= packet
!= NULL
;
6675 ctx
->tcp_flags
= tcp_flags
;
6676 ctx
->resubmit_hook
= NULL
;
6677 ctx
->report_hook
= NULL
;
6678 ctx
->resubmit_stats
= NULL
;
6681 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
6682 * into datapath actions in 'odp_actions', using 'ctx'. */
6684 xlate_actions(struct action_xlate_ctx
*ctx
,
6685 const struct ofpact
*ofpacts
, size_t ofpacts_len
,
6686 struct ofpbuf
*odp_actions
)
6688 /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
6689 * that in the future we always keep a copy of the original flow for
6690 * tracing purposes. */
6691 static bool hit_resubmit_limit
;
6693 enum slow_path_reason special
;
6694 struct ofport_dpif
*in_port
;
6695 struct flow orig_flow
;
6697 COVERAGE_INC(ofproto_dpif_xlate
);
6699 ofpbuf_clear(odp_actions
);
6700 ofpbuf_reserve(odp_actions
, NL_A_U32_SIZE
);
6702 ctx
->odp_actions
= odp_actions
;
6705 ctx
->has_learn
= false;
6706 ctx
->has_normal
= false;
6707 ctx
->has_fin_timeout
= false;
6708 ctx
->nf_output_iface
= NF_OUT_DROP
;
6711 ctx
->max_resubmit_trigger
= false;
6712 ctx
->orig_skb_priority
= ctx
->flow
.skb_priority
;
6716 ofpbuf_use_stub(&ctx
->stack
, ctx
->init_stack
, sizeof ctx
->init_stack
);
6718 if (ctx
->ofproto
->has_mirrors
|| hit_resubmit_limit
) {
6719 /* Do this conditionally because the copy is expensive enough that it
6720 * shows up in profiles. */
6721 orig_flow
= ctx
->flow
;
6724 if (ctx
->flow
.nw_frag
& FLOW_NW_FRAG_ANY
) {
6725 switch (ctx
->ofproto
->up
.frag_handling
) {
6726 case OFPC_FRAG_NORMAL
:
6727 /* We must pretend that transport ports are unavailable. */
6728 ctx
->flow
.tp_src
= ctx
->base_flow
.tp_src
= htons(0);
6729 ctx
->flow
.tp_dst
= ctx
->base_flow
.tp_dst
= htons(0);
6732 case OFPC_FRAG_DROP
:
6735 case OFPC_FRAG_REASM
:
6738 case OFPC_FRAG_NX_MATCH
:
6739 /* Nothing to do. */
6742 case OFPC_INVALID_TTL_TO_CONTROLLER
:
6747 in_port
= get_ofp_port(ctx
->ofproto
, ctx
->flow
.in_port
);
6748 special
= process_special(ctx
->ofproto
, &ctx
->flow
, in_port
, ctx
->packet
);
6750 ctx
->slow
|= special
;
6752 static struct vlog_rate_limit trace_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
6753 struct initial_vals initial_vals
;
6754 uint32_t local_odp_port
;
6756 initial_vals
.vlan_tci
= ctx
->base_flow
.vlan_tci
;
6757 initial_vals
.tunnel_ip_tos
= ctx
->base_flow
.tunnel
.ip_tos
;
6759 add_sflow_action(ctx
);
6761 if (tunnel_ecn_ok(ctx
) && (!in_port
|| may_receive(in_port
, ctx
))) {
6762 do_xlate_actions(ofpacts
, ofpacts_len
, ctx
);
6764 /* We've let OFPP_NORMAL and the learning action look at the
6765 * packet, so drop it now if forwarding is disabled. */
6766 if (in_port
&& !stp_forward_in_state(in_port
->stp_state
)) {
6767 ofpbuf_clear(ctx
->odp_actions
);
6768 add_sflow_action(ctx
);
6772 if (ctx
->max_resubmit_trigger
&& !ctx
->resubmit_hook
) {
6773 if (!hit_resubmit_limit
) {
6774 /* We didn't record the original flow. Make sure we do from
6776 hit_resubmit_limit
= true;
6777 } else if (!VLOG_DROP_ERR(&trace_rl
)) {
6778 struct ds ds
= DS_EMPTY_INITIALIZER
;
6780 ofproto_trace(ctx
->ofproto
, &orig_flow
, ctx
->packet
,
6781 &initial_vals
, &ds
);
6782 VLOG_ERR("Trace triggered by excessive resubmit "
6783 "recursion:\n%s", ds_cstr(&ds
));
6788 local_odp_port
= ofp_port_to_odp_port(ctx
->ofproto
, OFPP_LOCAL
);
6789 if (!connmgr_may_set_up_flow(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
6791 ctx
->odp_actions
->data
,
6792 ctx
->odp_actions
->size
)) {
6793 ctx
->slow
|= SLOW_IN_BAND
;
6795 && connmgr_msg_in_hook(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
6797 compose_output_action(ctx
, OFPP_LOCAL
);
6800 if (ctx
->ofproto
->has_mirrors
) {
6801 add_mirror_actions(ctx
, &orig_flow
);
6803 fix_sflow_action(ctx
);
6806 ofpbuf_uninit(&ctx
->stack
);
6809 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
6810 * into datapath actions, using 'ctx', and discards the datapath actions. */
6812 xlate_actions_for_side_effects(struct action_xlate_ctx
*ctx
,
6813 const struct ofpact
*ofpacts
,
6816 uint64_t odp_actions_stub
[1024 / 8];
6817 struct ofpbuf odp_actions
;
6819 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
6820 xlate_actions(ctx
, ofpacts
, ofpacts_len
, &odp_actions
);
6821 ofpbuf_uninit(&odp_actions
);
6825 xlate_report(struct action_xlate_ctx
*ctx
, const char *s
)
6827 if (ctx
->report_hook
) {
6828 ctx
->report_hook(ctx
, s
);
6832 /* OFPP_NORMAL implementation. */
6834 static struct ofport_dpif
*ofbundle_get_a_port(const struct ofbundle
*);
6836 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
6837 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
6838 * the bundle on which the packet was received, returns the VLAN to which the
6841 * Both 'vid' and the return value are in the range 0...4095. */
6843 input_vid_to_vlan(const struct ofbundle
*in_bundle
, uint16_t vid
)
6845 switch (in_bundle
->vlan_mode
) {
6846 case PORT_VLAN_ACCESS
:
6847 return in_bundle
->vlan
;
6850 case PORT_VLAN_TRUNK
:
6853 case PORT_VLAN_NATIVE_UNTAGGED
:
6854 case PORT_VLAN_NATIVE_TAGGED
:
6855 return vid
? vid
: in_bundle
->vlan
;
6862 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
6863 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
6866 * 'vid' should be the VID obtained from the 802.1Q header that was received as
6867 * part of a packet (specify 0 if there was no 802.1Q header), in the range
6870 input_vid_is_valid(uint16_t vid
, struct ofbundle
*in_bundle
, bool warn
)
6872 /* Allow any VID on the OFPP_NONE port. */
6873 if (in_bundle
== &ofpp_none_bundle
) {
6877 switch (in_bundle
->vlan_mode
) {
6878 case PORT_VLAN_ACCESS
:
6881 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6882 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" tagged "
6883 "packet received on port %s configured as VLAN "
6884 "%"PRIu16
" access port",
6885 in_bundle
->ofproto
->up
.name
, vid
,
6886 in_bundle
->name
, in_bundle
->vlan
);
6892 case PORT_VLAN_NATIVE_UNTAGGED
:
6893 case PORT_VLAN_NATIVE_TAGGED
:
6895 /* Port must always carry its native VLAN. */
6899 case PORT_VLAN_TRUNK
:
6900 if (!ofbundle_includes_vlan(in_bundle
, vid
)) {
6902 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
6903 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" packet "
6904 "received on port %s not configured for trunking "
6906 in_bundle
->ofproto
->up
.name
, vid
,
6907 in_bundle
->name
, vid
);
6919 /* Given 'vlan', the VLAN that a packet belongs to, and
6920 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
6921 * that should be included in the 802.1Q header. (If the return value is 0,
6922 * then the 802.1Q header should only be included in the packet if there is a
6925 * Both 'vlan' and the return value are in the range 0...4095. */
6927 output_vlan_to_vid(const struct ofbundle
*out_bundle
, uint16_t vlan
)
6929 switch (out_bundle
->vlan_mode
) {
6930 case PORT_VLAN_ACCESS
:
6933 case PORT_VLAN_TRUNK
:
6934 case PORT_VLAN_NATIVE_TAGGED
:
6937 case PORT_VLAN_NATIVE_UNTAGGED
:
6938 return vlan
== out_bundle
->vlan
? 0 : vlan
;
6946 output_normal(struct action_xlate_ctx
*ctx
, const struct ofbundle
*out_bundle
,
6949 struct ofport_dpif
*port
;
6951 ovs_be16 tci
, old_tci
;
6953 vid
= output_vlan_to_vid(out_bundle
, vlan
);
6954 if (!out_bundle
->bond
) {
6955 port
= ofbundle_get_a_port(out_bundle
);
6957 port
= bond_choose_output_slave(out_bundle
->bond
, &ctx
->flow
,
6960 /* No slaves enabled, so drop packet. */
6965 old_tci
= ctx
->flow
.vlan_tci
;
6967 if (tci
|| out_bundle
->use_priority_tags
) {
6968 tci
|= ctx
->flow
.vlan_tci
& htons(VLAN_PCP_MASK
);
6970 tci
|= htons(VLAN_CFI
);
6973 ctx
->flow
.vlan_tci
= tci
;
6975 compose_output_action(ctx
, port
->up
.ofp_port
);
6976 ctx
->flow
.vlan_tci
= old_tci
;
6980 mirror_mask_ffs(mirror_mask_t mask
)
6982 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask
));
6987 ofbundle_trunks_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
6989 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
6990 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
6994 ofbundle_includes_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
6996 return vlan
== bundle
->vlan
|| ofbundle_trunks_vlan(bundle
, vlan
);
6999 /* Returns an arbitrary interface within 'bundle'. */
7000 static struct ofport_dpif
*
7001 ofbundle_get_a_port(const struct ofbundle
*bundle
)
7003 return CONTAINER_OF(list_front(&bundle
->ports
),
7004 struct ofport_dpif
, bundle_node
);
7008 vlan_is_mirrored(const struct ofmirror
*m
, int vlan
)
7010 return !m
->vlans
|| bitmap_is_set(m
->vlans
, vlan
);
7014 add_mirror_actions(struct action_xlate_ctx
*ctx
, const struct flow
*orig_flow
)
7016 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
7017 mirror_mask_t mirrors
;
7018 struct ofbundle
*in_bundle
;
7021 const struct nlattr
*a
;
7024 in_bundle
= lookup_input_bundle(ctx
->ofproto
, orig_flow
->in_port
,
7025 ctx
->packet
!= NULL
, NULL
);
7029 mirrors
= in_bundle
->src_mirrors
;
7031 /* Drop frames on bundles reserved for mirroring. */
7032 if (in_bundle
->mirror_out
) {
7033 if (ctx
->packet
!= NULL
) {
7034 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7035 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
7036 "%s, which is reserved exclusively for mirroring",
7037 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7043 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
7044 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
7047 vlan
= input_vid_to_vlan(in_bundle
, vid
);
7049 /* Look at the output ports to check for destination selections. */
7051 NL_ATTR_FOR_EACH (a
, left
, ctx
->odp_actions
->data
,
7052 ctx
->odp_actions
->size
) {
7053 enum ovs_action_attr type
= nl_attr_type(a
);
7054 struct ofport_dpif
*ofport
;
7056 if (type
!= OVS_ACTION_ATTR_OUTPUT
) {
7060 ofport
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
7061 if (ofport
&& ofport
->bundle
) {
7062 mirrors
|= ofport
->bundle
->dst_mirrors
;
7070 /* Restore the original packet before adding the mirror actions. */
7071 ctx
->flow
= *orig_flow
;
7076 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
7078 if (!vlan_is_mirrored(m
, vlan
)) {
7079 mirrors
= zero_rightmost_1bit(mirrors
);
7083 mirrors
&= ~m
->dup_mirrors
;
7084 ctx
->mirrors
|= m
->dup_mirrors
;
7086 output_normal(ctx
, m
->out
, vlan
);
7087 } else if (vlan
!= m
->out_vlan
7088 && !eth_addr_is_reserved(orig_flow
->dl_dst
)) {
7089 struct ofbundle
*bundle
;
7091 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
7092 if (ofbundle_includes_vlan(bundle
, m
->out_vlan
)
7093 && !bundle
->mirror_out
) {
7094 output_normal(ctx
, bundle
, m
->out_vlan
);
7102 update_mirror_stats(struct ofproto_dpif
*ofproto
, mirror_mask_t mirrors
,
7103 uint64_t packets
, uint64_t bytes
)
7109 for (; mirrors
; mirrors
= zero_rightmost_1bit(mirrors
)) {
7112 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
7115 /* In normal circumstances 'm' will not be NULL. However,
7116 * if mirrors are reconfigured, we can temporarily get out
7117 * of sync in facet_revalidate(). We could "correct" the
7118 * mirror list before reaching here, but doing that would
7119 * not properly account the traffic stats we've currently
7120 * accumulated for previous mirror configuration. */
7124 m
->packet_count
+= packets
;
7125 m
->byte_count
+= bytes
;
7129 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
7130 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
7131 * indicate this; newer upstream kernels use gratuitous ARP requests. */
7133 is_gratuitous_arp(const struct flow
*flow
)
7135 return (flow
->dl_type
== htons(ETH_TYPE_ARP
)
7136 && eth_addr_is_broadcast(flow
->dl_dst
)
7137 && (flow
->nw_proto
== ARP_OP_REPLY
7138 || (flow
->nw_proto
== ARP_OP_REQUEST
7139 && flow
->nw_src
== flow
->nw_dst
)));
7143 update_learning_table(struct ofproto_dpif
*ofproto
,
7144 const struct flow
*flow
, int vlan
,
7145 struct ofbundle
*in_bundle
)
7147 struct mac_entry
*mac
;
7149 /* Don't learn the OFPP_NONE port. */
7150 if (in_bundle
== &ofpp_none_bundle
) {
7154 if (!mac_learning_may_learn(ofproto
->ml
, flow
->dl_src
, vlan
)) {
7158 mac
= mac_learning_insert(ofproto
->ml
, flow
->dl_src
, vlan
);
7159 if (is_gratuitous_arp(flow
)) {
7160 /* We don't want to learn from gratuitous ARP packets that are
7161 * reflected back over bond slaves so we lock the learning table. */
7162 if (!in_bundle
->bond
) {
7163 mac_entry_set_grat_arp_lock(mac
);
7164 } else if (mac_entry_is_grat_arp_locked(mac
)) {
7169 if (mac_entry_is_new(mac
) || mac
->port
.p
!= in_bundle
) {
7170 /* The log messages here could actually be useful in debugging,
7171 * so keep the rate limit relatively high. */
7172 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
7173 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
7174 "on port %s in VLAN %d",
7175 ofproto
->up
.name
, ETH_ADDR_ARGS(flow
->dl_src
),
7176 in_bundle
->name
, vlan
);
7178 mac
->port
.p
= in_bundle
;
7179 tag_set_add(&ofproto
->backer
->revalidate_set
,
7180 mac_learning_changed(ofproto
->ml
, mac
));
7184 static struct ofbundle
*
7185 lookup_input_bundle(const struct ofproto_dpif
*ofproto
, uint16_t in_port
,
7186 bool warn
, struct ofport_dpif
**in_ofportp
)
7188 struct ofport_dpif
*ofport
;
7190 /* Find the port and bundle for the received packet. */
7191 ofport
= get_ofp_port(ofproto
, in_port
);
7193 *in_ofportp
= ofport
;
7195 if (ofport
&& ofport
->bundle
) {
7196 return ofport
->bundle
;
7199 /* Special-case OFPP_NONE, which a controller may use as the ingress
7200 * port for traffic that it is sourcing. */
7201 if (in_port
== OFPP_NONE
) {
7202 return &ofpp_none_bundle
;
7205 /* Odd. A few possible reasons here:
7207 * - We deleted a port but there are still a few packets queued up
7210 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
7211 * we don't know about.
7213 * - The ofproto client didn't configure the port as part of a bundle.
7214 * This is particularly likely to happen if a packet was received on the
7215 * port after it was created, but before the client had a chance to
7216 * configure its bundle.
7219 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7221 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
7222 "port %"PRIu16
, ofproto
->up
.name
, in_port
);
7227 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
7228 * dropped. Returns true if they may be forwarded, false if they should be
7231 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
7232 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
7234 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
7235 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
7236 * checked by input_vid_is_valid().
7238 * May also add tags to '*tags', although the current implementation only does
7239 * so in one special case.
7242 is_admissible(struct action_xlate_ctx
*ctx
, struct ofport_dpif
*in_port
,
7245 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
7246 struct flow
*flow
= &ctx
->flow
;
7247 struct ofbundle
*in_bundle
= in_port
->bundle
;
7249 /* Drop frames for reserved multicast addresses
7250 * only if forward_bpdu option is absent. */
7251 if (!ofproto
->up
.forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
7252 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
7256 if (in_bundle
->bond
) {
7257 struct mac_entry
*mac
;
7259 switch (bond_check_admissibility(in_bundle
->bond
, in_port
,
7260 flow
->dl_dst
, &ctx
->tags
)) {
7265 xlate_report(ctx
, "bonding refused admissibility, dropping");
7268 case BV_DROP_IF_MOVED
:
7269 mac
= mac_learning_lookup(ofproto
->ml
, flow
->dl_src
, vlan
, NULL
);
7270 if (mac
&& mac
->port
.p
!= in_bundle
&&
7271 (!is_gratuitous_arp(flow
)
7272 || mac_entry_is_grat_arp_locked(mac
))) {
7273 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
7285 xlate_normal(struct action_xlate_ctx
*ctx
)
7287 struct ofport_dpif
*in_port
;
7288 struct ofbundle
*in_bundle
;
7289 struct mac_entry
*mac
;
7293 ctx
->has_normal
= true;
7295 in_bundle
= lookup_input_bundle(ctx
->ofproto
, ctx
->flow
.in_port
,
7296 ctx
->packet
!= NULL
, &in_port
);
7298 xlate_report(ctx
, "no input bundle, dropping");
7302 /* Drop malformed frames. */
7303 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_VLAN
) &&
7304 !(ctx
->flow
.vlan_tci
& htons(VLAN_CFI
))) {
7305 if (ctx
->packet
!= NULL
) {
7306 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7307 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
7308 "VLAN tag received on port %s",
7309 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7311 xlate_report(ctx
, "partial VLAN tag, dropping");
7315 /* Drop frames on bundles reserved for mirroring. */
7316 if (in_bundle
->mirror_out
) {
7317 if (ctx
->packet
!= NULL
) {
7318 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7319 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
7320 "%s, which is reserved exclusively for mirroring",
7321 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7323 xlate_report(ctx
, "input port is mirror output port, dropping");
7328 vid
= vlan_tci_to_vid(ctx
->flow
.vlan_tci
);
7329 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
7330 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
7333 vlan
= input_vid_to_vlan(in_bundle
, vid
);
7335 /* Check other admissibility requirements. */
7336 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
7340 /* Learn source MAC. */
7341 if (ctx
->may_learn
) {
7342 update_learning_table(ctx
->ofproto
, &ctx
->flow
, vlan
, in_bundle
);
7345 /* Determine output bundle. */
7346 mac
= mac_learning_lookup(ctx
->ofproto
->ml
, ctx
->flow
.dl_dst
, vlan
,
7349 if (mac
->port
.p
!= in_bundle
) {
7350 xlate_report(ctx
, "forwarding to learned port");
7351 output_normal(ctx
, mac
->port
.p
, vlan
);
7353 xlate_report(ctx
, "learned port is input port, dropping");
7356 struct ofbundle
*bundle
;
7358 xlate_report(ctx
, "no learned MAC for destination, flooding");
7359 HMAP_FOR_EACH (bundle
, hmap_node
, &ctx
->ofproto
->bundles
) {
7360 if (bundle
!= in_bundle
7361 && ofbundle_includes_vlan(bundle
, vlan
)
7362 && bundle
->floodable
7363 && !bundle
->mirror_out
) {
7364 output_normal(ctx
, bundle
, vlan
);
7367 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
7371 /* Optimized flow revalidation.
7373 * It's a difficult problem, in general, to tell which facets need to have
7374 * their actions recalculated whenever the OpenFlow flow table changes. We
7375 * don't try to solve that general problem: for most kinds of OpenFlow flow
7376 * table changes, we recalculate the actions for every facet. This is
7377 * relatively expensive, but it's good enough if the OpenFlow flow table
7378 * doesn't change very often.
7380 * However, we can expect one particular kind of OpenFlow flow table change to
7381 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
7382 * of CPU on revalidating every facet whenever MAC learning modifies the flow
7383 * table, we add a special case that applies to flow tables in which every rule
7384 * has the same form (that is, the same wildcards), except that the table is
7385 * also allowed to have a single "catch-all" flow that matches all packets. We
7386 * optimize this case by tagging all of the facets that resubmit into the table
7387 * and invalidating the same tag whenever a flow changes in that table. The
7388 * end result is that we revalidate just the facets that need it (and sometimes
7389 * a few more, but not all of the facets or even all of the facets that
7390 * resubmit to the table modified by MAC learning). */
7392 /* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted
7393 * into an OpenFlow table with the given 'basis'. */
7395 rule_calculate_tag(const struct flow
*flow
, const struct minimask
*mask
,
7398 if (minimask_is_catchall(mask
)) {
7401 uint32_t hash
= flow_hash_in_minimask(flow
, mask
, secret
);
7402 return tag_create_deterministic(hash
);
7406 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
7407 * taggability of that table.
7409 * This function must be called after *each* change to a flow table. If you
7410 * skip calling it on some changes then the pointer comparisons at the end can
7411 * be invalid if you get unlucky. For example, if a flow removal causes a
7412 * cls_table to be destroyed and then a flow insertion causes a cls_table with
7413 * different wildcards to be created with the same address, then this function
7414 * will incorrectly skip revalidation. */
7416 table_update_taggable(struct ofproto_dpif
*ofproto
, uint8_t table_id
)
7418 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
7419 const struct oftable
*oftable
= &ofproto
->up
.tables
[table_id
];
7420 struct cls_table
*catchall
, *other
;
7421 struct cls_table
*t
;
7423 catchall
= other
= NULL
;
7425 switch (hmap_count(&oftable
->cls
.tables
)) {
7427 /* We could tag this OpenFlow table but it would make the logic a
7428 * little harder and it's a corner case that doesn't seem worth it
7434 HMAP_FOR_EACH (t
, hmap_node
, &oftable
->cls
.tables
) {
7435 if (cls_table_is_catchall(t
)) {
7437 } else if (!other
) {
7440 /* Indicate that we can't tag this by setting both tables to
7441 * NULL. (We know that 'catchall' is already NULL.) */
7448 /* Can't tag this table. */
7452 if (table
->catchall_table
!= catchall
|| table
->other_table
!= other
) {
7453 table
->catchall_table
= catchall
;
7454 table
->other_table
= other
;
7455 ofproto
->backer
->need_revalidate
= REV_FLOW_TABLE
;
7459 /* Given 'rule' that has changed in some way (either it is a rule being
7460 * inserted, a rule being deleted, or a rule whose actions are being
7461 * modified), marks facets for revalidation to ensure that packets will be
7462 * forwarded correctly according to the new state of the flow table.
7464 * This function must be called after *each* change to a flow table. See
7465 * the comment on table_update_taggable() for more information. */
7467 rule_invalidate(const struct rule_dpif
*rule
)
7469 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
7471 table_update_taggable(ofproto
, rule
->up
.table_id
);
7473 if (!ofproto
->backer
->need_revalidate
) {
7474 struct table_dpif
*table
= &ofproto
->tables
[rule
->up
.table_id
];
7476 if (table
->other_table
&& rule
->tag
) {
7477 tag_set_add(&ofproto
->backer
->revalidate_set
, rule
->tag
);
7479 ofproto
->backer
->need_revalidate
= REV_FLOW_TABLE
;
7485 set_frag_handling(struct ofproto
*ofproto_
,
7486 enum ofp_config_flags frag_handling
)
7488 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7489 if (frag_handling
!= OFPC_FRAG_REASM
) {
7490 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
7498 packet_out(struct ofproto
*ofproto_
, struct ofpbuf
*packet
,
7499 const struct flow
*flow
,
7500 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
7502 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7503 struct initial_vals initial_vals
;
7504 struct odputil_keybuf keybuf
;
7505 struct dpif_flow_stats stats
;
7509 struct action_xlate_ctx ctx
;
7510 uint64_t odp_actions_stub
[1024 / 8];
7511 struct ofpbuf odp_actions
;
7513 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
7514 odp_flow_key_from_flow(&key
, flow
,
7515 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
7517 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
7519 initial_vals
.vlan_tci
= flow
->vlan_tci
;
7520 initial_vals
.tunnel_ip_tos
= 0;
7521 action_xlate_ctx_init(&ctx
, ofproto
, flow
, &initial_vals
, NULL
,
7522 packet_get_tcp_flags(packet
, flow
), packet
);
7523 ctx
.resubmit_stats
= &stats
;
7525 ofpbuf_use_stub(&odp_actions
,
7526 odp_actions_stub
, sizeof odp_actions_stub
);
7527 xlate_actions(&ctx
, ofpacts
, ofpacts_len
, &odp_actions
);
7528 dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
7529 odp_actions
.data
, odp_actions
.size
, packet
);
7530 ofpbuf_uninit(&odp_actions
);
7538 set_netflow(struct ofproto
*ofproto_
,
7539 const struct netflow_options
*netflow_options
)
7541 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7543 if (netflow_options
) {
7544 if (!ofproto
->netflow
) {
7545 ofproto
->netflow
= netflow_create();
7547 return netflow_set_options(ofproto
->netflow
, netflow_options
);
7549 netflow_destroy(ofproto
->netflow
);
7550 ofproto
->netflow
= NULL
;
7556 get_netflow_ids(const struct ofproto
*ofproto_
,
7557 uint8_t *engine_type
, uint8_t *engine_id
)
7559 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7561 dpif_get_netflow_ids(ofproto
->backer
->dpif
, engine_type
, engine_id
);
7565 send_active_timeout(struct ofproto_dpif
*ofproto
, struct facet
*facet
)
7567 if (!facet_is_controller_flow(facet
) &&
7568 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
7569 struct subfacet
*subfacet
;
7570 struct ofexpired expired
;
7572 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
7573 if (subfacet
->path
== SF_FAST_PATH
) {
7574 struct dpif_flow_stats stats
;
7576 subfacet_reinstall(subfacet
, &stats
);
7577 subfacet_update_stats(subfacet
, &stats
);
7581 expired
.flow
= facet
->flow
;
7582 expired
.packet_count
= facet
->packet_count
;
7583 expired
.byte_count
= facet
->byte_count
;
7584 expired
.used
= facet
->used
;
7585 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
7590 send_netflow_active_timeouts(struct ofproto_dpif
*ofproto
)
7592 struct facet
*facet
;
7594 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
7595 send_active_timeout(ofproto
, facet
);
7599 static struct ofproto_dpif
*
7600 ofproto_dpif_lookup(const char *name
)
7602 struct ofproto_dpif
*ofproto
;
7604 HMAP_FOR_EACH_WITH_HASH (ofproto
, all_ofproto_dpifs_node
,
7605 hash_string(name
, 0), &all_ofproto_dpifs
) {
7606 if (!strcmp(ofproto
->up
.name
, name
)) {
7614 ofproto_unixctl_fdb_flush(struct unixctl_conn
*conn
, int argc
,
7615 const char *argv
[], void *aux OVS_UNUSED
)
7617 struct ofproto_dpif
*ofproto
;
7620 ofproto
= ofproto_dpif_lookup(argv
[1]);
7622 unixctl_command_reply_error(conn
, "no such bridge");
7625 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
7627 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
7628 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
7632 unixctl_command_reply(conn
, "table successfully flushed");
7636 ofproto_unixctl_fdb_show(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
7637 const char *argv
[], void *aux OVS_UNUSED
)
7639 struct ds ds
= DS_EMPTY_INITIALIZER
;
7640 const struct ofproto_dpif
*ofproto
;
7641 const struct mac_entry
*e
;
7643 ofproto
= ofproto_dpif_lookup(argv
[1]);
7645 unixctl_command_reply_error(conn
, "no such bridge");
7649 ds_put_cstr(&ds
, " port VLAN MAC Age\n");
7650 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
7651 struct ofbundle
*bundle
= e
->port
.p
;
7652 ds_put_format(&ds
, "%5d %4d "ETH_ADDR_FMT
" %3d\n",
7653 ofbundle_get_a_port(bundle
)->odp_port
,
7654 e
->vlan
, ETH_ADDR_ARGS(e
->mac
),
7655 mac_entry_age(ofproto
->ml
, e
));
7657 unixctl_command_reply(conn
, ds_cstr(&ds
));
7662 struct action_xlate_ctx ctx
;
7668 trace_format_rule(struct ds
*result
, uint8_t table_id
, int level
,
7669 const struct rule_dpif
*rule
)
7671 ds_put_char_multiple(result
, '\t', level
);
7673 ds_put_cstr(result
, "No match\n");
7677 ds_put_format(result
, "Rule: table=%"PRIu8
" cookie=%#"PRIx64
" ",
7678 table_id
, ntohll(rule
->up
.flow_cookie
));
7679 cls_rule_format(&rule
->up
.cr
, result
);
7680 ds_put_char(result
, '\n');
7682 ds_put_char_multiple(result
, '\t', level
);
7683 ds_put_cstr(result
, "OpenFlow ");
7684 ofpacts_format(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, result
);
7685 ds_put_char(result
, '\n');
7689 trace_format_flow(struct ds
*result
, int level
, const char *title
,
7690 struct trace_ctx
*trace
)
7692 ds_put_char_multiple(result
, '\t', level
);
7693 ds_put_format(result
, "%s: ", title
);
7694 if (flow_equal(&trace
->ctx
.flow
, &trace
->flow
)) {
7695 ds_put_cstr(result
, "unchanged");
7697 flow_format(result
, &trace
->ctx
.flow
);
7698 trace
->flow
= trace
->ctx
.flow
;
7700 ds_put_char(result
, '\n');
7704 trace_format_regs(struct ds
*result
, int level
, const char *title
,
7705 struct trace_ctx
*trace
)
7709 ds_put_char_multiple(result
, '\t', level
);
7710 ds_put_format(result
, "%s:", title
);
7711 for (i
= 0; i
< FLOW_N_REGS
; i
++) {
7712 ds_put_format(result
, " reg%zu=0x%"PRIx32
, i
, trace
->flow
.regs
[i
]);
7714 ds_put_char(result
, '\n');
7718 trace_format_odp(struct ds
*result
, int level
, const char *title
,
7719 struct trace_ctx
*trace
)
7721 struct ofpbuf
*odp_actions
= trace
->ctx
.odp_actions
;
7723 ds_put_char_multiple(result
, '\t', level
);
7724 ds_put_format(result
, "%s: ", title
);
7725 format_odp_actions(result
, odp_actions
->data
, odp_actions
->size
);
7726 ds_put_char(result
, '\n');
7730 trace_resubmit(struct action_xlate_ctx
*ctx
, struct rule_dpif
*rule
)
7732 struct trace_ctx
*trace
= CONTAINER_OF(ctx
, struct trace_ctx
, ctx
);
7733 struct ds
*result
= trace
->result
;
7735 ds_put_char(result
, '\n');
7736 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
7737 trace_format_regs(result
, ctx
->recurse
+ 1, "Resubmitted regs", trace
);
7738 trace_format_odp(result
, ctx
->recurse
+ 1, "Resubmitted odp", trace
);
7739 trace_format_rule(result
, ctx
->table_id
, ctx
->recurse
+ 1, rule
);
7743 trace_report(struct action_xlate_ctx
*ctx
, const char *s
)
7745 struct trace_ctx
*trace
= CONTAINER_OF(ctx
, struct trace_ctx
, ctx
);
7746 struct ds
*result
= trace
->result
;
7748 ds_put_char_multiple(result
, '\t', ctx
->recurse
);
7749 ds_put_cstr(result
, s
);
7750 ds_put_char(result
, '\n');
7754 ofproto_unixctl_trace(struct unixctl_conn
*conn
, int argc
, const char *argv
[],
7755 void *aux OVS_UNUSED
)
7757 const char *dpname
= argv
[1];
7758 struct ofproto_dpif
*ofproto
;
7759 struct ofpbuf odp_key
;
7760 struct ofpbuf
*packet
;
7761 struct initial_vals initial_vals
;
7767 ofpbuf_init(&odp_key
, 0);
7770 ofproto
= ofproto_dpif_lookup(dpname
);
7772 unixctl_command_reply_error(conn
, "Unknown ofproto (use ofproto/list "
7776 if (argc
== 3 || (argc
== 4 && !strcmp(argv
[3], "-generate"))) {
7777 /* ofproto/trace dpname flow [-generate] */
7778 const char *flow_s
= argv
[2];
7779 const char *generate_s
= argv
[3];
7781 /* Allow 'flow_s' to be either a datapath flow or an OpenFlow-like
7782 * flow. We guess which type it is based on whether 'flow_s' contains
7783 * an '(', since a datapath flow always contains '(') but an
7784 * OpenFlow-like flow should not (in fact it's allowed but I believe
7785 * that's not documented anywhere).
7787 * An alternative would be to try to parse 'flow_s' both ways, but then
7788 * it would be tricky giving a sensible error message. After all, do
7789 * you just say "syntax error" or do you present both error messages?
7790 * Both choices seem lousy. */
7791 if (strchr(flow_s
, '(')) {
7794 /* Convert string to datapath key. */
7795 ofpbuf_init(&odp_key
, 0);
7796 error
= odp_flow_key_from_string(flow_s
, NULL
, &odp_key
);
7798 unixctl_command_reply_error(conn
, "Bad flow syntax");
7802 /* The user might have specified the wrong ofproto but within the
7803 * same backer. That's OK, ofproto_receive() can find the right
7805 if (ofproto_receive(ofproto
->backer
, NULL
, odp_key
.data
,
7806 odp_key
.size
, &flow
, NULL
, &ofproto
, NULL
,
7808 unixctl_command_reply_error(conn
, "Invalid flow");
7811 ds_put_format(&result
, "Bridge: %s\n", ofproto
->up
.name
);
7815 error_s
= parse_ofp_exact_flow(&flow
, argv
[2]);
7817 unixctl_command_reply_error(conn
, error_s
);
7822 initial_vals
.vlan_tci
= flow
.vlan_tci
;
7823 initial_vals
.tunnel_ip_tos
= flow
.tunnel
.ip_tos
;
7826 /* Generate a packet, if requested. */
7828 packet
= ofpbuf_new(0);
7829 flow_compose(packet
, &flow
);
7831 } else if (argc
== 7) {
7832 /* ofproto/trace dpname priority tun_id in_port mark packet */
7833 const char *priority_s
= argv
[2];
7834 const char *tun_id_s
= argv
[3];
7835 const char *in_port_s
= argv
[4];
7836 const char *mark_s
= argv
[5];
7837 const char *packet_s
= argv
[6];
7838 uint32_t in_port
= atoi(in_port_s
);
7839 ovs_be64 tun_id
= htonll(strtoull(tun_id_s
, NULL
, 0));
7840 uint32_t priority
= atoi(priority_s
);
7841 uint32_t mark
= atoi(mark_s
);
7844 msg
= eth_from_hex(packet_s
, &packet
);
7846 unixctl_command_reply_error(conn
, msg
);
7850 ds_put_cstr(&result
, "Packet: ");
7851 s
= ofp_packet_to_string(packet
->data
, packet
->size
);
7852 ds_put_cstr(&result
, s
);
7855 flow_extract(packet
, priority
, mark
, NULL
, in_port
, &flow
);
7856 flow
.tunnel
.tun_id
= tun_id
;
7857 initial_vals
.vlan_tci
= flow
.vlan_tci
;
7858 initial_vals
.tunnel_ip_tos
= flow
.tunnel
.ip_tos
;
7860 unixctl_command_reply_error(conn
, "Bad command syntax");
7864 ofproto_trace(ofproto
, &flow
, packet
, &initial_vals
, &result
);
7865 unixctl_command_reply(conn
, ds_cstr(&result
));
7868 ds_destroy(&result
);
7869 ofpbuf_delete(packet
);
7870 ofpbuf_uninit(&odp_key
);
7874 ofproto_trace(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
7875 const struct ofpbuf
*packet
,
7876 const struct initial_vals
*initial_vals
, struct ds
*ds
)
7878 struct rule_dpif
*rule
;
7880 ds_put_cstr(ds
, "Flow: ");
7881 flow_format(ds
, flow
);
7882 ds_put_char(ds
, '\n');
7884 rule
= rule_dpif_lookup(ofproto
, flow
);
7886 trace_format_rule(ds
, 0, 0, rule
);
7887 if (rule
== ofproto
->miss_rule
) {
7888 ds_put_cstr(ds
, "\nNo match, flow generates \"packet in\"s.\n");
7889 } else if (rule
== ofproto
->no_packet_in_rule
) {
7890 ds_put_cstr(ds
, "\nNo match, packets dropped because "
7891 "OFPPC_NO_PACKET_IN is set on in_port.\n");
7895 uint64_t odp_actions_stub
[1024 / 8];
7896 struct ofpbuf odp_actions
;
7898 struct trace_ctx trace
;
7901 tcp_flags
= packet
? packet_get_tcp_flags(packet
, flow
) : 0;
7904 ofpbuf_use_stub(&odp_actions
,
7905 odp_actions_stub
, sizeof odp_actions_stub
);
7906 action_xlate_ctx_init(&trace
.ctx
, ofproto
, flow
, initial_vals
,
7907 rule
, tcp_flags
, packet
);
7908 trace
.ctx
.resubmit_hook
= trace_resubmit
;
7909 trace
.ctx
.report_hook
= trace_report
;
7910 xlate_actions(&trace
.ctx
, rule
->up
.ofpacts
, rule
->up
.ofpacts_len
,
7913 ds_put_char(ds
, '\n');
7914 trace_format_flow(ds
, 0, "Final flow", &trace
);
7915 ds_put_cstr(ds
, "Datapath actions: ");
7916 format_odp_actions(ds
, odp_actions
.data
, odp_actions
.size
);
7917 ofpbuf_uninit(&odp_actions
);
7919 if (trace
.ctx
.slow
) {
7920 enum slow_path_reason slow
;
7922 ds_put_cstr(ds
, "\nThis flow is handled by the userspace "
7923 "slow path because it:");
7924 for (slow
= trace
.ctx
.slow
; slow
; ) {
7925 enum slow_path_reason bit
= rightmost_1bit(slow
);
7929 ds_put_cstr(ds
, "\n\t- Consists of CFM packets.");
7932 ds_put_cstr(ds
, "\n\t- Consists of LACP packets.");
7935 ds_put_cstr(ds
, "\n\t- Consists of STP packets.");
7938 ds_put_cstr(ds
, "\n\t- Needs in-band special case "
7941 ds_put_cstr(ds
, "\n\t (The datapath actions are "
7942 "incomplete--for complete actions, "
7943 "please supply a packet.)");
7946 case SLOW_CONTROLLER
:
7947 ds_put_cstr(ds
, "\n\t- Sends \"packet-in\" messages "
7948 "to the OpenFlow controller.");
7951 ds_put_cstr(ds
, "\n\t- Needs more specific matching "
7952 "than the datapath supports.");
7959 if (slow
& ~SLOW_MATCH
) {
7960 ds_put_cstr(ds
, "\nThe datapath actions above do not reflect "
7961 "the special slow-path processing.");
7968 ofproto_dpif_clog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
7969 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
7972 unixctl_command_reply(conn
, NULL
);
7976 ofproto_dpif_unclog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
7977 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
7980 unixctl_command_reply(conn
, NULL
);
7983 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
7984 * 'reply' describing the results. */
7986 ofproto_dpif_self_check__(struct ofproto_dpif
*ofproto
, struct ds
*reply
)
7988 struct facet
*facet
;
7992 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
7993 if (!facet_check_consistency(facet
)) {
7998 ofproto
->backer
->need_revalidate
= REV_INCONSISTENCY
;
8002 ds_put_format(reply
, "%s: self-check failed (%d errors)\n",
8003 ofproto
->up
.name
, errors
);
8005 ds_put_format(reply
, "%s: self-check passed\n", ofproto
->up
.name
);
8010 ofproto_dpif_self_check(struct unixctl_conn
*conn
,
8011 int argc
, const char *argv
[], void *aux OVS_UNUSED
)
8013 struct ds reply
= DS_EMPTY_INITIALIZER
;
8014 struct ofproto_dpif
*ofproto
;
8017 ofproto
= ofproto_dpif_lookup(argv
[1]);
8019 unixctl_command_reply_error(conn
, "Unknown ofproto (use "
8020 "ofproto/list for help)");
8023 ofproto_dpif_self_check__(ofproto
, &reply
);
8025 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8026 ofproto_dpif_self_check__(ofproto
, &reply
);
8030 unixctl_command_reply(conn
, ds_cstr(&reply
));
8034 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
8035 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
8036 * to destroy 'ofproto_shash' and free the returned value. */
8037 static const struct shash_node
**
8038 get_ofprotos(struct shash
*ofproto_shash
)
8040 const struct ofproto_dpif
*ofproto
;
8042 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8043 char *name
= xasprintf("%s@%s", ofproto
->up
.type
, ofproto
->up
.name
);
8044 shash_add_nocopy(ofproto_shash
, name
, ofproto
);
8047 return shash_sort(ofproto_shash
);
8051 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
8052 const char *argv
[] OVS_UNUSED
,
8053 void *aux OVS_UNUSED
)
8055 struct ds ds
= DS_EMPTY_INITIALIZER
;
8056 struct shash ofproto_shash
;
8057 const struct shash_node
**sorted_ofprotos
;
8060 shash_init(&ofproto_shash
);
8061 sorted_ofprotos
= get_ofprotos(&ofproto_shash
);
8062 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
8063 const struct shash_node
*node
= sorted_ofprotos
[i
];
8064 ds_put_format(&ds
, "%s\n", node
->name
);
8067 shash_destroy(&ofproto_shash
);
8068 free(sorted_ofprotos
);
8070 unixctl_command_reply(conn
, ds_cstr(&ds
));
8075 show_dp_format(const struct ofproto_dpif
*ofproto
, struct ds
*ds
)
8077 const struct shash_node
**ports
;
8080 ds_put_format(ds
, "%s (%s):\n", ofproto
->up
.name
,
8081 dpif_name(ofproto
->backer
->dpif
));
8083 "\tlookups: hit:%"PRIu64
" missed:%"PRIu64
"\n",
8084 ofproto
->n_hit
, ofproto
->n_missed
);
8085 ds_put_format(ds
, "\tflows: %zu\n",
8086 hmap_count(&ofproto
->subfacets
));
8088 ports
= shash_sort(&ofproto
->up
.port_by_name
);
8089 for (i
= 0; i
< shash_count(&ofproto
->up
.port_by_name
); i
++) {
8090 const struct shash_node
*node
= ports
[i
];
8091 struct ofport
*ofport
= node
->data
;
8092 const char *name
= netdev_get_name(ofport
->netdev
);
8093 const char *type
= netdev_get_type(ofport
->netdev
);
8096 ds_put_format(ds
, "\t%s %u/", name
, ofport
->ofp_port
);
8098 odp_port
= ofp_port_to_odp_port(ofproto
, ofport
->ofp_port
);
8099 if (odp_port
!= OVSP_NONE
) {
8100 ds_put_format(ds
, "%"PRIu32
":", odp_port
);
8102 ds_put_cstr(ds
, "none:");
8105 if (strcmp(type
, "system")) {
8106 struct netdev
*netdev
;
8109 ds_put_format(ds
, " (%s", type
);
8111 error
= netdev_open(name
, type
, &netdev
);
8116 error
= netdev_get_config(netdev
, &config
);
8118 const struct smap_node
**nodes
;
8121 nodes
= smap_sort(&config
);
8122 for (i
= 0; i
< smap_count(&config
); i
++) {
8123 const struct smap_node
*node
= nodes
[i
];
8124 ds_put_format(ds
, "%c %s=%s", i
? ',' : ':',
8125 node
->key
, node
->value
);
8129 smap_destroy(&config
);
8131 netdev_close(netdev
);
8133 ds_put_char(ds
, ')');
8135 ds_put_char(ds
, '\n');
8141 ofproto_unixctl_dpif_show(struct unixctl_conn
*conn
, int argc
,
8142 const char *argv
[], void *aux OVS_UNUSED
)
8144 struct ds ds
= DS_EMPTY_INITIALIZER
;
8145 const struct ofproto_dpif
*ofproto
;
8149 for (i
= 1; i
< argc
; i
++) {
8150 ofproto
= ofproto_dpif_lookup(argv
[i
]);
8152 ds_put_format(&ds
, "Unknown bridge %s (use dpif/dump-dps "
8153 "for help)", argv
[i
]);
8154 unixctl_command_reply_error(conn
, ds_cstr(&ds
));
8157 show_dp_format(ofproto
, &ds
);
8160 struct shash ofproto_shash
;
8161 const struct shash_node
**sorted_ofprotos
;
8164 shash_init(&ofproto_shash
);
8165 sorted_ofprotos
= get_ofprotos(&ofproto_shash
);
8166 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
8167 const struct shash_node
*node
= sorted_ofprotos
[i
];
8168 show_dp_format(node
->data
, &ds
);
8171 shash_destroy(&ofproto_shash
);
8172 free(sorted_ofprotos
);
8175 unixctl_command_reply(conn
, ds_cstr(&ds
));
8180 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn
*conn
,
8181 int argc OVS_UNUSED
, const char *argv
[],
8182 void *aux OVS_UNUSED
)
8184 struct ds ds
= DS_EMPTY_INITIALIZER
;
8185 const struct ofproto_dpif
*ofproto
;
8186 struct subfacet
*subfacet
;
8188 ofproto
= ofproto_dpif_lookup(argv
[1]);
8190 unixctl_command_reply_error(conn
, "no such bridge");
8194 update_stats(ofproto
->backer
);
8196 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->subfacets
) {
8197 odp_flow_key_format(subfacet
->key
, subfacet
->key_len
, &ds
);
8199 ds_put_format(&ds
, ", packets:%"PRIu64
", bytes:%"PRIu64
", used:",
8200 subfacet
->dp_packet_count
, subfacet
->dp_byte_count
);
8201 if (subfacet
->used
) {
8202 ds_put_format(&ds
, "%.3fs",
8203 (time_msec() - subfacet
->used
) / 1000.0);
8205 ds_put_format(&ds
, "never");
8207 if (subfacet
->facet
->tcp_flags
) {
8208 ds_put_cstr(&ds
, ", flags:");
8209 packet_format_tcp_flags(&ds
, subfacet
->facet
->tcp_flags
);
8212 ds_put_cstr(&ds
, ", actions:");
8213 if (subfacet
->slow
) {
8214 uint64_t slow_path_stub
[128 / 8];
8215 const struct nlattr
*actions
;
8218 compose_slow_path(ofproto
, &subfacet
->facet
->flow
, subfacet
->slow
,
8219 slow_path_stub
, sizeof slow_path_stub
,
8220 &actions
, &actions_len
);
8221 format_odp_actions(&ds
, actions
, actions_len
);
8223 format_odp_actions(&ds
, subfacet
->actions
, subfacet
->actions_len
);
8225 ds_put_char(&ds
, '\n');
8228 unixctl_command_reply(conn
, ds_cstr(&ds
));
8233 ofproto_unixctl_dpif_del_flows(struct unixctl_conn
*conn
,
8234 int argc OVS_UNUSED
, const char *argv
[],
8235 void *aux OVS_UNUSED
)
8237 struct ds ds
= DS_EMPTY_INITIALIZER
;
8238 struct ofproto_dpif
*ofproto
;
8240 ofproto
= ofproto_dpif_lookup(argv
[1]);
8242 unixctl_command_reply_error(conn
, "no such bridge");
8246 flush(&ofproto
->up
);
8248 unixctl_command_reply(conn
, ds_cstr(&ds
));
8253 ofproto_dpif_unixctl_init(void)
8255 static bool registered
;
8261 unixctl_command_register(
8263 "bridge {priority tun_id in_port mark packet | odp_flow [-generate]}",
8264 2, 6, ofproto_unixctl_trace
, NULL
);
8265 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
8266 ofproto_unixctl_fdb_flush
, NULL
);
8267 unixctl_command_register("fdb/show", "bridge", 1, 1,
8268 ofproto_unixctl_fdb_show
, NULL
);
8269 unixctl_command_register("ofproto/clog", "", 0, 0,
8270 ofproto_dpif_clog
, NULL
);
8271 unixctl_command_register("ofproto/unclog", "", 0, 0,
8272 ofproto_dpif_unclog
, NULL
);
8273 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
8274 ofproto_dpif_self_check
, NULL
);
8275 unixctl_command_register("dpif/dump-dps", "", 0, 0,
8276 ofproto_unixctl_dpif_dump_dps
, NULL
);
8277 unixctl_command_register("dpif/show", "[bridge]", 0, INT_MAX
,
8278 ofproto_unixctl_dpif_show
, NULL
);
8279 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
8280 ofproto_unixctl_dpif_dump_flows
, NULL
);
8281 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
8282 ofproto_unixctl_dpif_del_flows
, NULL
);
8285 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
8287 * This is deprecated. It is only for compatibility with broken device drivers
8288 * in old versions of Linux that do not properly support VLANs when VLAN
8289 * devices are not used. When broken device drivers are no longer in
8290 * widespread use, we will delete these interfaces. */
8293 set_realdev(struct ofport
*ofport_
, uint16_t realdev_ofp_port
, int vid
)
8295 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport_
->ofproto
);
8296 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
8298 if (realdev_ofp_port
== ofport
->realdev_ofp_port
8299 && vid
== ofport
->vlandev_vid
) {
8303 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
8305 if (ofport
->realdev_ofp_port
) {
8308 if (realdev_ofp_port
&& ofport
->bundle
) {
8309 /* vlandevs are enslaved to their realdevs, so they are not allowed to
8310 * themselves be part of a bundle. */
8311 bundle_set(ofport
->up
.ofproto
, ofport
->bundle
, NULL
);
8314 ofport
->realdev_ofp_port
= realdev_ofp_port
;
8315 ofport
->vlandev_vid
= vid
;
8317 if (realdev_ofp_port
) {
8318 vsp_add(ofport
, realdev_ofp_port
, vid
);
8325 hash_realdev_vid(uint16_t realdev_ofp_port
, int vid
)
8327 return hash_2words(realdev_ofp_port
, vid
);
8330 /* Returns the ODP port number of the Linux VLAN device that corresponds to
8331 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
8332 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
8333 * it would return the port number of eth0.9.
8335 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
8336 * function just returns its 'realdev_odp_port' argument. */
8338 vsp_realdev_to_vlandev(const struct ofproto_dpif
*ofproto
,
8339 uint32_t realdev_odp_port
, ovs_be16 vlan_tci
)
8341 if (!hmap_is_empty(&ofproto
->realdev_vid_map
)) {
8342 uint16_t realdev_ofp_port
;
8343 int vid
= vlan_tci_to_vid(vlan_tci
);
8344 const struct vlan_splinter
*vsp
;
8346 realdev_ofp_port
= odp_port_to_ofp_port(ofproto
, realdev_odp_port
);
8347 HMAP_FOR_EACH_WITH_HASH (vsp
, realdev_vid_node
,
8348 hash_realdev_vid(realdev_ofp_port
, vid
),
8349 &ofproto
->realdev_vid_map
) {
8350 if (vsp
->realdev_ofp_port
== realdev_ofp_port
8351 && vsp
->vid
== vid
) {
8352 return ofp_port_to_odp_port(ofproto
, vsp
->vlandev_ofp_port
);
8356 return realdev_odp_port
;
8359 static struct vlan_splinter
*
8360 vlandev_find(const struct ofproto_dpif
*ofproto
, uint16_t vlandev_ofp_port
)
8362 struct vlan_splinter
*vsp
;
8364 HMAP_FOR_EACH_WITH_HASH (vsp
, vlandev_node
, hash_int(vlandev_ofp_port
, 0),
8365 &ofproto
->vlandev_map
) {
8366 if (vsp
->vlandev_ofp_port
== vlandev_ofp_port
) {
8374 /* Returns the OpenFlow port number of the "real" device underlying the Linux
8375 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
8376 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
8377 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
8378 * eth0 and store 9 in '*vid'.
8380 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
8381 * VLAN device. Unless VLAN splinters are enabled, this is what this function
8384 vsp_vlandev_to_realdev(const struct ofproto_dpif
*ofproto
,
8385 uint16_t vlandev_ofp_port
, int *vid
)
8387 if (!hmap_is_empty(&ofproto
->vlandev_map
)) {
8388 const struct vlan_splinter
*vsp
;
8390 vsp
= vlandev_find(ofproto
, vlandev_ofp_port
);
8395 return vsp
->realdev_ofp_port
;
8401 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
8402 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
8403 * 'flow->in_port' to the "real" device backing the VLAN device, sets
8404 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
8405 * always the case unless VLAN splinters are enabled), returns false without
8406 * making any changes. */
8408 vsp_adjust_flow(const struct ofproto_dpif
*ofproto
, struct flow
*flow
)
8413 realdev
= vsp_vlandev_to_realdev(ofproto
, flow
->in_port
, &vid
);
8418 /* Cause the flow to be processed as if it came in on the real device with
8419 * the VLAN device's VLAN ID. */
8420 flow
->in_port
= realdev
;
8421 flow
->vlan_tci
= htons((vid
& VLAN_VID_MASK
) | VLAN_CFI
);
8426 vsp_remove(struct ofport_dpif
*port
)
8428 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
8429 struct vlan_splinter
*vsp
;
8431 vsp
= vlandev_find(ofproto
, port
->up
.ofp_port
);
8433 hmap_remove(&ofproto
->vlandev_map
, &vsp
->vlandev_node
);
8434 hmap_remove(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
);
8437 port
->realdev_ofp_port
= 0;
8439 VLOG_ERR("missing vlan device record");
8444 vsp_add(struct ofport_dpif
*port
, uint16_t realdev_ofp_port
, int vid
)
8446 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
8448 if (!vsp_vlandev_to_realdev(ofproto
, port
->up
.ofp_port
, NULL
)
8449 && (vsp_realdev_to_vlandev(ofproto
, realdev_ofp_port
, htons(vid
))
8450 == realdev_ofp_port
)) {
8451 struct vlan_splinter
*vsp
;
8453 vsp
= xmalloc(sizeof *vsp
);
8454 hmap_insert(&ofproto
->vlandev_map
, &vsp
->vlandev_node
,
8455 hash_int(port
->up
.ofp_port
, 0));
8456 hmap_insert(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
,
8457 hash_realdev_vid(realdev_ofp_port
, vid
));
8458 vsp
->realdev_ofp_port
= realdev_ofp_port
;
8459 vsp
->vlandev_ofp_port
= port
->up
.ofp_port
;
8462 port
->realdev_ofp_port
= realdev_ofp_port
;
8464 VLOG_ERR("duplicate vlan device record");
8469 ofp_port_to_odp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
8471 const struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
8472 return ofport
? ofport
->odp_port
: OVSP_NONE
;
8475 static struct ofport_dpif
*
8476 odp_port_to_ofport(const struct dpif_backer
*backer
, uint32_t odp_port
)
8478 struct ofport_dpif
*port
;
8480 HMAP_FOR_EACH_IN_BUCKET (port
, odp_port_node
,
8481 hash_int(odp_port
, 0),
8482 &backer
->odp_to_ofport_map
) {
8483 if (port
->odp_port
== odp_port
) {
8492 odp_port_to_ofp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
8494 struct ofport_dpif
*port
;
8496 port
= odp_port_to_ofport(ofproto
->backer
, odp_port
);
8497 if (port
&& &ofproto
->up
== port
->up
.ofproto
) {
8498 return port
->up
.ofp_port
;
8505 dpif_stats_update_hit_count(struct ofproto_dpif
*ofproto
, uint64_t delta
)
8507 ofproto
->n_hit
+= delta
;
8510 const struct ofproto_class ofproto_dpif_class
= {
8545 port_is_lacp_current
,
8546 NULL
, /* rule_choose_table */
8553 rule_modify_actions
,
8564 get_stp_port_status
,
8571 is_mirror_output_bundle
,
8572 forward_bpdu_changed
,
8573 set_mac_table_config
,