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"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "meta-flow.h"
38 #include "multipath.h"
39 #include "netdev-vport.h"
44 #include "odp-execute.h"
47 #include "ofp-actions.h"
48 #include "ofp-parse.h"
49 #include "ofp-print.h"
50 #include "ofproto-dpif-governor.h"
51 #include "ofproto-dpif-ipfix.h"
52 #include "ofproto-dpif-sflow.h"
53 #include "poll-loop.h"
58 #include "unaligned.h"
60 #include "vlan-bitmap.h"
63 VLOG_DEFINE_THIS_MODULE(ofproto_dpif
);
65 COVERAGE_DEFINE(ofproto_dpif_expired
);
66 COVERAGE_DEFINE(ofproto_dpif_xlate
);
67 COVERAGE_DEFINE(facet_changed_rule
);
68 COVERAGE_DEFINE(facet_revalidate
);
69 COVERAGE_DEFINE(facet_unexpected
);
70 COVERAGE_DEFINE(facet_suppress
);
72 /* Maximum depth of flow table recursion (due to resubmit actions) in a
73 * flow translation. */
74 #define MAX_RESUBMIT_RECURSION 64
76 /* Number of implemented OpenFlow tables. */
77 enum { N_TABLES
= 255 };
78 enum { TBL_INTERNAL
= N_TABLES
- 1 }; /* Used for internal hidden rules. */
79 BUILD_ASSERT_DECL(N_TABLES
>= 2 && N_TABLES
<= 255);
91 * - Do include packets and bytes from facets that have been deleted or
92 * whose own statistics have been folded into the rule.
94 * - Do include packets and bytes sent "by hand" that were accounted to
95 * the rule without any facet being involved (this is a rare corner
96 * case in rule_execute()).
98 * - Do not include packet or bytes that can be obtained from any facet's
99 * packet_count or byte_count member or that can be obtained from the
100 * datapath by, e.g., dpif_flow_get() for any subfacet.
102 uint64_t packet_count
; /* Number of packets received. */
103 uint64_t byte_count
; /* Number of bytes received. */
105 tag_type tag
; /* Caches rule_calculate_tag() result. */
107 struct list facets
; /* List of "struct facet"s. */
110 static struct rule_dpif
*rule_dpif_cast(const struct rule
*rule
)
112 return rule
? CONTAINER_OF(rule
, struct rule_dpif
, up
) : NULL
;
115 static struct rule_dpif
*rule_dpif_lookup(struct ofproto_dpif
*,
117 struct flow_wildcards
*wc
);
118 static struct rule_dpif
*rule_dpif_lookup__(struct ofproto_dpif
*,
120 struct flow_wildcards
*wc
,
122 static struct rule_dpif
*rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
,
123 const struct flow
*flow
);
125 static void rule_get_stats(struct rule
*, uint64_t *packets
, uint64_t *bytes
);
126 static void rule_credit_stats(struct rule_dpif
*,
127 const struct dpif_flow_stats
*);
128 static tag_type
rule_calculate_tag(const struct flow
*,
129 const struct minimask
*, uint32_t basis
);
130 static void rule_invalidate(const struct rule_dpif
*);
132 #define MAX_MIRRORS 32
133 typedef uint32_t mirror_mask_t
;
134 #define MIRROR_MASK_C(X) UINT32_C(X)
135 BUILD_ASSERT_DECL(sizeof(mirror_mask_t
) * CHAR_BIT
>= MAX_MIRRORS
);
137 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
138 size_t idx
; /* In ofproto's "mirrors" array. */
139 void *aux
; /* Key supplied by ofproto's client. */
140 char *name
; /* Identifier for log messages. */
142 /* Selection criteria. */
143 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
144 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
145 unsigned long *vlans
; /* Bitmap of chosen VLANs, NULL selects all. */
147 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
148 struct ofbundle
*out
; /* Output port or NULL. */
149 int out_vlan
; /* Output VLAN or -1. */
150 mirror_mask_t dup_mirrors
; /* Bitmap of mirrors with the same output. */
153 int64_t packet_count
; /* Number of packets sent. */
154 int64_t byte_count
; /* Number of bytes sent. */
157 static void mirror_destroy(struct ofmirror
*);
158 static void update_mirror_stats(struct ofproto_dpif
*ofproto
,
159 mirror_mask_t mirrors
,
160 uint64_t packets
, uint64_t bytes
);
163 struct hmap_node hmap_node
; /* In struct ofproto's "bundles" hmap. */
164 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
165 void *aux
; /* Key supplied by ofproto's client. */
166 char *name
; /* Identifier for log messages. */
169 struct list ports
; /* Contains "struct ofport"s. */
170 enum port_vlan_mode vlan_mode
; /* VLAN mode */
171 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
172 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
173 * NULL if all VLANs are trunked. */
174 struct lacp
*lacp
; /* LACP if LACP is enabled, otherwise NULL. */
175 struct bond
*bond
; /* Nonnull iff more than one port. */
176 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
179 bool floodable
; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
181 /* Port mirroring info. */
182 mirror_mask_t src_mirrors
; /* Mirrors triggered when packet received. */
183 mirror_mask_t dst_mirrors
; /* Mirrors triggered when packet sent. */
184 mirror_mask_t mirror_out
; /* Mirrors that output to this bundle. */
187 static void bundle_remove(struct ofport
*);
188 static void bundle_update(struct ofbundle
*);
189 static void bundle_destroy(struct ofbundle
*);
190 static void bundle_del_port(struct ofport_dpif
*);
191 static void bundle_run(struct ofbundle
*);
192 static void bundle_wait(struct ofbundle
*);
193 static struct ofbundle
*lookup_input_bundle(const struct ofproto_dpif
*,
194 uint16_t in_port
, bool warn
,
195 struct ofport_dpif
**in_ofportp
);
197 /* A controller may use OFPP_NONE as the ingress port to indicate that
198 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
199 * when an input bundle is needed for validation (e.g., mirroring or
200 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
201 * any 'port' structs, so care must be taken when dealing with it. */
202 static struct ofbundle ofpp_none_bundle
= {
204 .vlan_mode
= PORT_VLAN_TRUNK
207 static void stp_run(struct ofproto_dpif
*ofproto
);
208 static void stp_wait(struct ofproto_dpif
*ofproto
);
209 static int set_stp_port(struct ofport
*,
210 const struct ofproto_port_stp_settings
*);
212 static bool ofbundle_includes_vlan(const struct ofbundle
*, uint16_t vlan
);
216 /* Initial values of fields of the packet that may be changed during
217 * flow processing and needed later. */
218 struct initial_vals
{
219 /* This is the value of vlan_tci in the packet as actually received from
220 * dpif. This is the same as the facet's flow.vlan_tci unless the packet
221 * was received via a VLAN splinter. In that case, this value is 0
222 * (because the packet as actually received from the dpif had no 802.1Q
223 * tag) but the facet's flow.vlan_tci is set to the VLAN that the splinter
226 * This member should be removed when the VLAN splinters feature is no
232 /* Wildcards relevant in translation. Any fields that were used to
233 * calculate the action must be set for caching and kernel
234 * wildcarding to work. For example, if the flow lookup involved
235 * performing the "normal" action on IPv4 and ARP packets, 'wc'
236 * would have the 'in_port' (always set), 'dl_type' (flow match),
237 * 'vlan_tci' (normal action), and 'dl_dst' (normal action) fields
239 struct flow_wildcards wc
;
241 tag_type tags
; /* Tags associated with actions. */
242 enum slow_path_reason slow
; /* 0 if fast path may be used. */
243 bool has_learn
; /* Actions include NXAST_LEARN? */
244 bool has_normal
; /* Actions output to OFPP_NORMAL? */
245 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
246 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
247 mirror_mask_t mirrors
; /* Bitmap of associated mirrors. */
249 uint64_t odp_actions_stub
[256 / 8];
250 struct ofpbuf odp_actions
;
254 struct ofproto_dpif
*ofproto
;
256 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
257 * this flow when actions change header fields. */
260 struct initial_vals initial_vals
;
262 /* The packet corresponding to 'flow', or a null pointer if we are
263 * revalidating without a packet to refer to. */
264 const struct ofpbuf
*packet
;
266 /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
267 * actions update the flow table?
269 * We want to update these tables if we are actually processing a packet,
270 * or if we are accounting for packets that the datapath has processed, but
271 * not if we are just revalidating. */
274 /* The rule initiating translation or NULL. */
275 struct rule_dpif
*rule
;
277 /* The actions to translate. If 'rule' is not NULL, these may be NULL. */
278 const struct ofpact
*ofpacts
;
281 /* Union of the set of TCP flags seen so far in this flow. (Used only by
282 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
286 /* If nonnull, flow translation calls this function just before executing a
287 * resubmit or OFPP_TABLE action. In addition, disables logging of traces
288 * when the recursion depth is exceeded.
290 * 'rule' is the rule being submitted into. It will be null if the
291 * resubmit or OFPP_TABLE action didn't find a matching rule.
293 * This is normally null so the client has to set it manually after
294 * calling xlate_in_init(). */
295 void (*resubmit_hook
)(struct xlate_ctx
*, struct rule_dpif
*rule
);
297 /* If nonnull, flow translation calls this function to report some
298 * significant decision, e.g. to explain why OFPP_NORMAL translation
299 * dropped a packet. */
300 void (*report_hook
)(struct xlate_ctx
*, const char *s
);
302 /* If nonnull, flow translation credits the specified statistics to each
303 * rule reached through a resubmit or OFPP_TABLE action.
305 * This is normally null so the client has to set it manually after
306 * calling xlate_in_init(). */
307 const struct dpif_flow_stats
*resubmit_stats
;
310 /* Context used by xlate_actions() and its callees. */
312 struct xlate_in
*xin
;
313 struct xlate_out
*xout
;
315 struct ofproto_dpif
*ofproto
;
317 /* Flow at the last commit. */
318 struct flow base_flow
;
320 /* Tunnel IP destination address as received. This is stored separately
321 * as the base_flow.tunnel is cleared on init to reflect the datapath
322 * behavior. Used to make sure not to send tunneled output to ourselves,
323 * which might lead to an infinite loop. This could happen easily
324 * if a tunnel is marked as 'ip_remote=flow', and the flow does not
325 * actually set the tun_dst field. */
326 ovs_be32 orig_tunnel_ip_dst
;
328 /* Stack for the push and pop actions. Each stack element is of type
329 * "union mf_subvalue". */
330 union mf_subvalue init_stack
[1024 / sizeof(union mf_subvalue
)];
333 /* The rule that we are currently translating, or NULL. */
334 struct rule_dpif
*rule
;
336 int recurse
; /* Recursion level, via xlate_table_action. */
337 bool max_resubmit_trigger
; /* Recursed too deeply during translation. */
338 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
339 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
340 uint32_t sflow_n_outputs
; /* Number of output ports. */
341 uint32_t sflow_odp_port
; /* Output port for composing sFlow action. */
342 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
343 bool exit
; /* No further actions should be processed. */
346 static void xlate_in_init(struct xlate_in
*, struct ofproto_dpif
*,
347 const struct flow
*, const struct initial_vals
*,
348 struct rule_dpif
*, uint8_t tcp_flags
,
349 const struct ofpbuf
*);
351 static void xlate_out_uninit(struct xlate_out
*);
353 static void xlate_actions(struct xlate_in
*, struct xlate_out
*);
355 static void xlate_actions_for_side_effects(struct xlate_in
*);
357 static void xlate_table_action(struct xlate_ctx
*, uint16_t in_port
,
358 uint8_t table_id
, bool may_packet_in
);
360 static size_t put_userspace_action(const struct ofproto_dpif
*,
361 struct ofpbuf
*odp_actions
,
363 const union user_action_cookie
*,
366 static void compose_slow_path(const struct ofproto_dpif
*, const struct flow
*,
367 enum slow_path_reason
,
368 uint64_t *stub
, size_t stub_size
,
369 const struct nlattr
**actionsp
,
370 size_t *actions_lenp
);
372 static void xlate_report(struct xlate_ctx
*ctx
, const char *s
);
374 static void xlate_out_copy(struct xlate_out
*dst
, const struct xlate_out
*src
);
376 /* A subfacet (see "struct subfacet" below) has three possible installation
379 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
380 * case just after the subfacet is created, just before the subfacet is
381 * destroyed, or if the datapath returns an error when we try to install a
384 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
386 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
387 * ofproto_dpif is installed in the datapath.
390 SF_NOT_INSTALLED
, /* No datapath flow for this subfacet. */
391 SF_FAST_PATH
, /* Full actions are installed. */
392 SF_SLOW_PATH
, /* Send-to-userspace action is installed. */
395 /* A dpif flow and actions associated with a facet.
397 * See also the large comment on struct facet. */
400 struct hmap_node hmap_node
; /* In struct ofproto_dpif 'subfacets' list. */
401 struct list list_node
; /* In struct facet's 'facets' list. */
402 struct facet
*facet
; /* Owning facet. */
403 struct dpif_backer
*backer
; /* Owning backer. */
405 enum odp_key_fitness key_fitness
;
409 long long int used
; /* Time last used; time created if not used. */
410 long long int created
; /* Time created. */
412 uint64_t dp_packet_count
; /* Last known packet count in the datapath. */
413 uint64_t dp_byte_count
; /* Last known byte count in the datapath. */
415 enum subfacet_path path
; /* Installed in datapath? */
418 #define SUBFACET_DESTROY_MAX_BATCH 50
420 static struct subfacet
*subfacet_create(struct facet
*, struct flow_miss
*miss
,
422 static struct subfacet
*subfacet_find(struct dpif_backer
*,
423 const struct nlattr
*key
, size_t key_len
,
425 static void subfacet_destroy(struct subfacet
*);
426 static void subfacet_destroy__(struct subfacet
*);
427 static void subfacet_destroy_batch(struct dpif_backer
*,
428 struct subfacet
**, int n
);
429 static void subfacet_reset_dp_stats(struct subfacet
*,
430 struct dpif_flow_stats
*);
431 static void subfacet_update_stats(struct subfacet
*,
432 const struct dpif_flow_stats
*);
433 static int subfacet_install(struct subfacet
*,
434 const struct ofpbuf
*odp_actions
,
435 struct dpif_flow_stats
*);
436 static void subfacet_uninstall(struct subfacet
*);
438 /* A unique, non-overlapping instantiation of an OpenFlow flow.
440 * A facet associates a "struct flow", which represents the Open vSwitch
441 * userspace idea of an exact-match flow, with one or more subfacets.
442 * While the facet is created based on an exact-match flow, it is stored
443 * within the ofproto based on the wildcards that could be expressed
444 * based on the flow table and other configuration. (See the 'wc'
445 * description in "struct xlate_out" for more details.)
447 * Each subfacet tracks the datapath's idea of the flow equivalent to
448 * the facet. When the kernel module (or other dpif implementation) and
449 * Open vSwitch userspace agree on the definition of a flow key, there
450 * is exactly one subfacet per facet. If the dpif implementation
451 * supports more-specific flow matching than userspace, however, a facet
452 * can have more than one subfacet. Examples include the dpif
453 * implementation not supporting the same wildcards as userspace or some
454 * distinction in flow that userspace simply doesn't understand.
456 * Flow expiration works in terms of subfacets, so a facet must have at
457 * least one subfacet or it will never expire, leaking memory. */
460 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
461 struct list list_node
; /* In owning rule's 'facets' list. */
462 struct rule_dpif
*rule
; /* Owning rule. */
465 struct list subfacets
;
466 long long int used
; /* Time last used; time created if not used. */
469 struct flow flow
; /* Flow of the creating subfacet. */
470 struct cls_rule cr
; /* In 'ofproto_dpif's facets classifier. */
474 * - Do include packets and bytes sent "by hand", e.g. with
477 * - Do include packets and bytes that were obtained from the datapath
478 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
479 * DPIF_FP_ZERO_STATS).
481 * - Do not include packets or bytes that can be obtained from the
482 * datapath for any existing subfacet.
484 uint64_t packet_count
; /* Number of packets received. */
485 uint64_t byte_count
; /* Number of bytes received. */
487 /* Resubmit statistics. */
488 uint64_t prev_packet_count
; /* Number of packets from last stats push. */
489 uint64_t prev_byte_count
; /* Number of bytes from last stats push. */
490 long long int prev_used
; /* Used time from last stats push. */
493 uint64_t accounted_bytes
; /* Bytes processed by facet_account(). */
494 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
495 uint8_t tcp_flags
; /* TCP flags seen for this 'rule'. */
497 struct xlate_out xout
;
499 /* Initial values of the packet that may be needed later. */
500 struct initial_vals initial_vals
;
502 /* Storage for a single subfacet, to reduce malloc() time and space
503 * overhead. (A facet always has at least one subfacet and in the common
504 * case has exactly one subfacet. However, 'one_subfacet' may not
505 * always be valid, since it could have been removed after newer
506 * subfacets were pushed onto the 'subfacets' list.) */
507 struct subfacet one_subfacet
;
509 long long int learn_rl
; /* Rate limiter for facet_learn(). */
512 static struct facet
*facet_create(const struct flow_miss
*, struct rule_dpif
*,
514 struct dpif_flow_stats
*);
515 static void facet_remove(struct facet
*);
516 static void facet_free(struct facet
*);
518 static struct facet
*facet_find(struct ofproto_dpif
*, const struct flow
*);
519 static struct facet
*facet_lookup_valid(struct ofproto_dpif
*,
520 const struct flow
*);
521 static bool facet_revalidate(struct facet
*);
522 static bool facet_check_consistency(struct facet
*);
524 static void facet_flush_stats(struct facet
*);
526 static void facet_reset_counters(struct facet
*);
527 static void facet_push_stats(struct facet
*, bool may_learn
);
528 static void facet_learn(struct facet
*);
529 static void facet_account(struct facet
*);
530 static void push_all_stats(void);
532 static bool facet_is_controller_flow(struct facet
*);
535 struct hmap_node odp_port_node
; /* In dpif_backer's "odp_to_ofport_map". */
539 struct ofbundle
*bundle
; /* Bundle that contains this port, if any. */
540 struct list bundle_node
; /* In struct ofbundle's "ports" list. */
541 struct cfm
*cfm
; /* Connectivity Fault Management, if any. */
542 struct bfd
*bfd
; /* BFD, if any. */
543 tag_type tag
; /* Tag associated with this port. */
544 bool may_enable
; /* May be enabled in bonds. */
545 long long int carrier_seq
; /* Carrier status changes. */
546 struct tnl_port
*tnl_port
; /* Tunnel handle, or null. */
549 struct stp_port
*stp_port
; /* Spanning Tree Protocol, if any. */
550 enum stp_state stp_state
; /* Always STP_DISABLED if STP not in use. */
551 long long int stp_state_entered
;
553 struct hmap priorities
; /* Map of attached 'priority_to_dscp's. */
555 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
557 * This is deprecated. It is only for compatibility with broken device
558 * drivers in old versions of Linux that do not properly support VLANs when
559 * VLAN devices are not used. When broken device drivers are no longer in
560 * widespread use, we will delete these interfaces. */
561 uint16_t realdev_ofp_port
;
565 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
566 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
567 * traffic egressing the 'ofport' with that priority should be marked with. */
568 struct priority_to_dscp
{
569 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'priorities' map. */
570 uint32_t priority
; /* Priority of this queue (see struct flow). */
572 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
575 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
577 * This is deprecated. It is only for compatibility with broken device drivers
578 * in old versions of Linux that do not properly support VLANs when VLAN
579 * devices are not used. When broken device drivers are no longer in
580 * widespread use, we will delete these interfaces. */
581 struct vlan_splinter
{
582 struct hmap_node realdev_vid_node
;
583 struct hmap_node vlandev_node
;
584 uint16_t realdev_ofp_port
;
585 uint16_t vlandev_ofp_port
;
589 static uint16_t vsp_realdev_to_vlandev(const struct ofproto_dpif
*,
590 uint16_t realdev_ofp_port
,
592 static bool vsp_adjust_flow(const struct ofproto_dpif
*, struct flow
*);
593 static void vsp_remove(struct ofport_dpif
*);
594 static void vsp_add(struct ofport_dpif
*, uint16_t realdev_ofp_port
, int vid
);
596 static uint32_t ofp_port_to_odp_port(const struct ofproto_dpif
*,
598 static uint16_t odp_port_to_ofp_port(const struct ofproto_dpif
*,
601 static struct ofport_dpif
*
602 ofport_dpif_cast(const struct ofport
*ofport
)
604 return ofport
? CONTAINER_OF(ofport
, struct ofport_dpif
, up
) : NULL
;
607 static void port_run(struct ofport_dpif
*);
608 static void port_run_fast(struct ofport_dpif
*);
609 static void port_wait(struct ofport_dpif
*);
610 static int set_bfd(struct ofport
*, const struct smap
*);
611 static int set_cfm(struct ofport
*, const struct cfm_settings
*);
612 static void ofport_clear_priorities(struct ofport_dpif
*);
613 static void run_fast_rl(void);
615 struct dpif_completion
{
616 struct list list_node
;
617 struct ofoperation
*op
;
620 /* Extra information about a classifier table.
621 * Currently used just for optimized flow revalidation. */
623 /* If either of these is nonnull, then this table has a form that allows
624 * flows to be tagged to avoid revalidating most flows for the most common
625 * kinds of flow table changes. */
626 struct cls_table
*catchall_table
; /* Table that wildcards all fields. */
627 struct cls_table
*other_table
; /* Table with any other wildcard set. */
628 uint32_t basis
; /* Keeps each table's tags separate. */
631 /* Reasons that we might need to revalidate every facet, and corresponding
634 * A value of 0 means that there is no need to revalidate.
636 * It would be nice to have some cleaner way to integrate with coverage
637 * counters, but with only a few reasons I guess this is good enough for
639 enum revalidate_reason
{
640 REV_RECONFIGURE
= 1, /* Switch configuration changed. */
641 REV_STP
, /* Spanning tree protocol port status change. */
642 REV_PORT_TOGGLED
, /* Port enabled or disabled by CFM, LACP, ...*/
643 REV_FLOW_TABLE
, /* Flow table changed. */
644 REV_INCONSISTENCY
/* Facet self-check failed. */
646 COVERAGE_DEFINE(rev_reconfigure
);
647 COVERAGE_DEFINE(rev_stp
);
648 COVERAGE_DEFINE(rev_port_toggled
);
649 COVERAGE_DEFINE(rev_flow_table
);
650 COVERAGE_DEFINE(rev_inconsistency
);
652 /* Drop keys are odp flow keys which have drop flows installed in the kernel.
653 * These are datapath flows which have no associated ofproto, if they did we
654 * would use facets. */
656 struct hmap_node hmap_node
;
661 struct avg_subfacet_rates
{
662 double add_rate
; /* Moving average of new flows created per minute. */
663 double del_rate
; /* Moving average of flows deleted per minute. */
666 /* All datapaths of a given type share a single dpif backer instance. */
671 struct timer next_expiration
;
672 struct hmap odp_to_ofport_map
; /* ODP port to ofport mapping. */
674 struct simap tnl_backers
; /* Set of dpif ports backing tunnels. */
676 /* Facet revalidation flags applying to facets which use this backer. */
677 enum revalidate_reason need_revalidate
; /* Revalidate every facet. */
678 struct tag_set revalidate_set
; /* Revalidate only matching facets. */
680 struct hmap drop_keys
; /* Set of dropped odp keys. */
681 bool recv_set_enable
; /* Enables or disables receiving packets. */
683 struct hmap subfacets
;
684 struct governor
*governor
;
686 /* Subfacet statistics.
688 * These keep track of the total number of subfacets added and deleted and
689 * flow life span. They are useful for computing the flow rates stats
690 * exposed via "ovs-appctl dpif/show". The goal is to learn about
691 * traffic patterns in ways that we can use later to improve Open vSwitch
692 * performance in new situations. */
693 long long int created
; /* Time when it is created. */
694 unsigned max_n_subfacet
; /* Maximum number of flows */
695 unsigned avg_n_subfacet
; /* Average number of flows. */
696 long long int avg_subfacet_life
; /* Average life span of subfacets. */
698 /* The average number of subfacets... */
699 struct avg_subfacet_rates hourly
; /* ...over the last hour. */
700 struct avg_subfacet_rates daily
; /* ...over the last day. */
701 struct avg_subfacet_rates lifetime
; /* ...over the switch lifetime. */
702 long long int last_minute
; /* Last time 'hourly' was updated. */
704 /* Number of subfacets added or deleted since 'last_minute'. */
705 unsigned subfacet_add_count
;
706 unsigned subfacet_del_count
;
708 /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
709 unsigned long long int total_subfacet_add_count
;
710 unsigned long long int total_subfacet_del_count
;
713 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
714 static struct shash all_dpif_backers
= SHASH_INITIALIZER(&all_dpif_backers
);
716 static void drop_key_clear(struct dpif_backer
*);
717 static struct ofport_dpif
*
718 odp_port_to_ofport(const struct dpif_backer
*, uint32_t odp_port
);
719 static void update_moving_averages(struct dpif_backer
*backer
);
721 struct ofproto_dpif
{
722 struct hmap_node all_ofproto_dpifs_node
; /* In 'all_ofproto_dpifs'. */
724 struct dpif_backer
*backer
;
726 /* Special OpenFlow rules. */
727 struct rule_dpif
*miss_rule
; /* Sends flow table misses to controller. */
728 struct rule_dpif
*no_packet_in_rule
; /* Drops flow table misses. */
729 struct rule_dpif
*drop_frags_rule
; /* Used in OFPC_FRAG_DROP mode. */
732 struct netflow
*netflow
;
733 struct dpif_sflow
*sflow
;
734 struct dpif_ipfix
*ipfix
;
735 struct hmap bundles
; /* Contains "struct ofbundle"s. */
736 struct mac_learning
*ml
;
737 struct ofmirror
*mirrors
[MAX_MIRRORS
];
739 bool has_bonded_bundles
;
742 struct classifier facets
; /* Contains 'struct facet's. */
743 long long int consistency_rl
;
746 struct table_dpif tables
[N_TABLES
];
748 /* Support for debugging async flow mods. */
749 struct list completions
;
751 bool has_bundle_action
; /* True when the first bundle action appears. */
752 struct netdev_stats stats
; /* To account packets generated and consumed in
757 long long int stp_last_tick
;
759 /* VLAN splinters. */
760 struct hmap realdev_vid_map
; /* (realdev,vid) -> vlandev. */
761 struct hmap vlandev_map
; /* vlandev -> (realdev,vid). */
764 struct sset ports
; /* Set of standard port names. */
765 struct sset ghost_ports
; /* Ports with no datapath port. */
766 struct sset port_poll_set
; /* Queued names for port_poll() reply. */
767 int port_poll_errno
; /* Last errno for port_poll() reply. */
769 /* Per ofproto's dpif stats. */
774 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
775 * for debugging the asynchronous flow_mod implementation.) */
778 /* All existing ofproto_dpif instances, indexed by ->up.name. */
779 static struct hmap all_ofproto_dpifs
= HMAP_INITIALIZER(&all_ofproto_dpifs
);
781 static void ofproto_dpif_unixctl_init(void);
783 static struct ofproto_dpif
*
784 ofproto_dpif_cast(const struct ofproto
*ofproto
)
786 ovs_assert(ofproto
->ofproto_class
== &ofproto_dpif_class
);
787 return CONTAINER_OF(ofproto
, struct ofproto_dpif
, up
);
790 static struct ofport_dpif
*get_ofp_port(const struct ofproto_dpif
*,
792 static struct ofport_dpif
*get_odp_port(const struct ofproto_dpif
*,
794 static void ofproto_trace(struct ofproto_dpif
*, const struct flow
*,
795 const struct ofpbuf
*,
796 const struct initial_vals
*, struct ds
*);
798 /* Packet processing. */
799 static void update_learning_table(struct ofproto_dpif
*, const struct flow
*,
800 struct flow_wildcards
*, int vlan
,
803 #define FLOW_MISS_MAX_BATCH 50
804 static int handle_upcalls(struct dpif_backer
*, unsigned int max_batch
);
806 /* Flow expiration. */
807 static int expire(struct dpif_backer
*);
810 static void send_netflow_active_timeouts(struct ofproto_dpif
*);
813 static int send_packet(const struct ofport_dpif
*, struct ofpbuf
*packet
);
814 static size_t compose_sflow_action(const struct ofproto_dpif
*,
815 struct ofpbuf
*odp_actions
,
816 const struct flow
*, uint32_t odp_port
);
817 static void compose_ipfix_action(const struct ofproto_dpif
*,
818 struct ofpbuf
*odp_actions
,
819 const struct flow
*);
820 static void add_mirror_actions(struct xlate_ctx
*ctx
,
821 const struct flow
*flow
);
822 /* Global variables. */
823 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
825 /* Initial mappings of port to bridge mappings. */
826 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
828 /* Factory functions. */
831 init(const struct shash
*iface_hints
)
833 struct shash_node
*node
;
835 /* Make a local copy, since we don't own 'iface_hints' elements. */
836 SHASH_FOR_EACH(node
, iface_hints
) {
837 const struct iface_hint
*orig_hint
= node
->data
;
838 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
840 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
841 new_hint
->br_type
= xstrdup(orig_hint
->br_type
);
842 new_hint
->ofp_port
= orig_hint
->ofp_port
;
844 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
849 enumerate_types(struct sset
*types
)
851 dp_enumerate_types(types
);
855 enumerate_names(const char *type
, struct sset
*names
)
857 struct ofproto_dpif
*ofproto
;
860 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
861 if (strcmp(type
, ofproto
->up
.type
)) {
864 sset_add(names
, ofproto
->up
.name
);
871 del(const char *type
, const char *name
)
876 error
= dpif_open(name
, type
, &dpif
);
878 error
= dpif_delete(dpif
);
885 port_open_type(const char *datapath_type
, const char *port_type
)
887 return dpif_port_open_type(datapath_type
, port_type
);
890 /* Type functions. */
892 static struct ofproto_dpif
*
893 lookup_ofproto_dpif_by_port_name(const char *name
)
895 struct ofproto_dpif
*ofproto
;
897 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
898 if (sset_contains(&ofproto
->ports
, name
)) {
907 type_run(const char *type
)
909 static long long int push_timer
= LLONG_MIN
;
910 struct dpif_backer
*backer
;
914 backer
= shash_find_data(&all_dpif_backers
, type
);
916 /* This is not necessarily a problem, since backers are only
917 * created on demand. */
921 dpif_run(backer
->dpif
);
923 /* The most natural place to push facet statistics is when they're pulled
924 * from the datapath. However, when there are many flows in the datapath,
925 * this expensive operation can occur so frequently, that it reduces our
926 * ability to quickly set up flows. To reduce the cost, we push statistics
928 if (time_msec() > push_timer
) {
929 push_timer
= time_msec() + 2000;
933 /* If vswitchd started with other_config:flow_restore_wait set as "true",
934 * and the configuration has now changed to "false", enable receiving
935 * packets from the datapath. */
936 if (!backer
->recv_set_enable
&& !ofproto_get_flow_restore_wait()) {
937 backer
->recv_set_enable
= true;
939 error
= dpif_recv_set(backer
->dpif
, backer
->recv_set_enable
);
941 VLOG_ERR("Failed to enable receiving packets in dpif.");
944 dpif_flow_flush(backer
->dpif
);
945 backer
->need_revalidate
= REV_RECONFIGURE
;
948 if (backer
->need_revalidate
949 || !tag_set_is_empty(&backer
->revalidate_set
)) {
950 struct tag_set revalidate_set
= backer
->revalidate_set
;
951 bool need_revalidate
= backer
->need_revalidate
;
952 struct ofproto_dpif
*ofproto
;
953 struct simap_node
*node
;
954 struct simap tmp_backers
;
956 /* Handle tunnel garbage collection. */
957 simap_init(&tmp_backers
);
958 simap_swap(&backer
->tnl_backers
, &tmp_backers
);
960 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
961 struct ofport_dpif
*iter
;
963 if (backer
!= ofproto
->backer
) {
967 HMAP_FOR_EACH (iter
, up
.hmap_node
, &ofproto
->up
.ports
) {
968 char namebuf
[NETDEV_VPORT_NAME_BUFSIZE
];
971 if (!iter
->tnl_port
) {
975 dp_port
= netdev_vport_get_dpif_port(iter
->up
.netdev
,
976 namebuf
, sizeof namebuf
);
977 node
= simap_find(&tmp_backers
, dp_port
);
979 simap_put(&backer
->tnl_backers
, dp_port
, node
->data
);
980 simap_delete(&tmp_backers
, node
);
981 node
= simap_find(&backer
->tnl_backers
, dp_port
);
983 node
= simap_find(&backer
->tnl_backers
, dp_port
);
985 uint32_t odp_port
= UINT32_MAX
;
987 if (!dpif_port_add(backer
->dpif
, iter
->up
.netdev
,
989 simap_put(&backer
->tnl_backers
, dp_port
, odp_port
);
990 node
= simap_find(&backer
->tnl_backers
, dp_port
);
995 iter
->odp_port
= node
? node
->data
: OVSP_NONE
;
996 if (tnl_port_reconfigure(&iter
->up
, iter
->odp_port
,
998 backer
->need_revalidate
= REV_RECONFIGURE
;
1003 SIMAP_FOR_EACH (node
, &tmp_backers
) {
1004 dpif_port_del(backer
->dpif
, node
->data
);
1006 simap_destroy(&tmp_backers
);
1008 switch (backer
->need_revalidate
) {
1009 case REV_RECONFIGURE
: COVERAGE_INC(rev_reconfigure
); break;
1010 case REV_STP
: COVERAGE_INC(rev_stp
); break;
1011 case REV_PORT_TOGGLED
: COVERAGE_INC(rev_port_toggled
); break;
1012 case REV_FLOW_TABLE
: COVERAGE_INC(rev_flow_table
); break;
1013 case REV_INCONSISTENCY
: COVERAGE_INC(rev_inconsistency
); break;
1016 if (backer
->need_revalidate
) {
1017 /* Clear the drop_keys in case we should now be accepting some
1018 * formerly dropped flows. */
1019 drop_key_clear(backer
);
1022 /* Clear the revalidation flags. */
1023 tag_set_init(&backer
->revalidate_set
);
1024 backer
->need_revalidate
= 0;
1026 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
1027 struct facet
*facet
, *next
;
1028 struct cls_cursor cursor
;
1030 if (ofproto
->backer
!= backer
) {
1034 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
1035 CLS_CURSOR_FOR_EACH_SAFE (facet
, next
, cr
, &cursor
) {
1037 || tag_set_intersects(&revalidate_set
, facet
->xout
.tags
)) {
1038 facet_revalidate(facet
);
1045 if (!backer
->recv_set_enable
) {
1046 /* Wake up before a max of 1000ms. */
1047 timer_set_duration(&backer
->next_expiration
, 1000);
1048 } else if (timer_expired(&backer
->next_expiration
)) {
1049 int delay
= expire(backer
);
1050 timer_set_duration(&backer
->next_expiration
, delay
);
1053 /* Check for port changes in the dpif. */
1054 while ((error
= dpif_port_poll(backer
->dpif
, &devname
)) == 0) {
1055 struct ofproto_dpif
*ofproto
;
1056 struct dpif_port port
;
1058 /* Don't report on the datapath's device. */
1059 if (!strcmp(devname
, dpif_base_name(backer
->dpif
))) {
1063 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
1064 &all_ofproto_dpifs
) {
1065 if (simap_contains(&ofproto
->backer
->tnl_backers
, devname
)) {
1070 ofproto
= lookup_ofproto_dpif_by_port_name(devname
);
1071 if (dpif_port_query_by_name(backer
->dpif
, devname
, &port
)) {
1072 /* The port was removed. If we know the datapath,
1073 * report it through poll_set(). If we don't, it may be
1074 * notifying us of a removal we initiated, so ignore it.
1075 * If there's a pending ENOBUFS, let it stand, since
1076 * everything will be reevaluated. */
1077 if (ofproto
&& ofproto
->port_poll_errno
!= ENOBUFS
) {
1078 sset_add(&ofproto
->port_poll_set
, devname
);
1079 ofproto
->port_poll_errno
= 0;
1081 } else if (!ofproto
) {
1082 /* The port was added, but we don't know with which
1083 * ofproto we should associate it. Delete it. */
1084 dpif_port_del(backer
->dpif
, port
.port_no
);
1086 dpif_port_destroy(&port
);
1092 if (error
!= EAGAIN
) {
1093 struct ofproto_dpif
*ofproto
;
1095 /* There was some sort of error, so propagate it to all
1096 * ofprotos that use this backer. */
1097 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
,
1098 &all_ofproto_dpifs
) {
1099 if (ofproto
->backer
== backer
) {
1100 sset_clear(&ofproto
->port_poll_set
);
1101 ofproto
->port_poll_errno
= error
;
1106 if (backer
->governor
) {
1109 governor_run(backer
->governor
);
1111 /* If the governor has shrunk to its minimum size and the number of
1112 * subfacets has dwindled, then drop the governor entirely.
1114 * For hysteresis, the number of subfacets to drop the governor is
1115 * smaller than the number needed to trigger its creation. */
1116 n_subfacets
= hmap_count(&backer
->subfacets
);
1117 if (n_subfacets
* 4 < flow_eviction_threshold
1118 && governor_is_idle(backer
->governor
)) {
1119 governor_destroy(backer
->governor
);
1120 backer
->governor
= NULL
;
1128 dpif_backer_run_fast(struct dpif_backer
*backer
, int max_batch
)
1132 /* If recv_set_enable is false, we should not handle upcalls. */
1133 if (!backer
->recv_set_enable
) {
1137 /* Handle one or more batches of upcalls, until there's nothing left to do
1138 * or until we do a fixed total amount of work.
1140 * We do work in batches because it can be much cheaper to set up a number
1141 * of flows and fire off their patches all at once. We do multiple batches
1142 * because in some cases handling a packet can cause another packet to be
1143 * queued almost immediately as part of the return flow. Both
1144 * optimizations can make major improvements on some benchmarks and
1145 * presumably for real traffic as well. */
1147 while (work
< max_batch
) {
1148 int retval
= handle_upcalls(backer
, max_batch
- work
);
1159 type_run_fast(const char *type
)
1161 struct dpif_backer
*backer
;
1163 backer
= shash_find_data(&all_dpif_backers
, type
);
1165 /* This is not necessarily a problem, since backers are only
1166 * created on demand. */
1170 return dpif_backer_run_fast(backer
, FLOW_MISS_MAX_BATCH
);
1176 static long long int port_rl
= LLONG_MIN
;
1177 static unsigned int backer_rl
= 0;
1179 if (time_msec() >= port_rl
) {
1180 struct ofproto_dpif
*ofproto
;
1181 struct ofport_dpif
*ofport
;
1183 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
1185 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1186 port_run_fast(ofport
);
1189 port_rl
= time_msec() + 200;
1192 /* XXX: We have to be careful not to do too much work in this function. If
1193 * we call dpif_backer_run_fast() too often, or with too large a batch,
1194 * performance improves signifcantly, but at a cost. It's possible for the
1195 * number of flows in the datapath to increase without bound, and for poll
1196 * loops to take 10s of seconds. The correct solution to this problem,
1197 * long term, is to separate flow miss handling into it's own thread so it
1198 * isn't affected by revalidations, and expirations. Until then, this is
1199 * the best we can do. */
1200 if (++backer_rl
>= 10) {
1201 struct shash_node
*node
;
1204 SHASH_FOR_EACH (node
, &all_dpif_backers
) {
1205 dpif_backer_run_fast(node
->data
, 1);
1211 type_wait(const char *type
)
1213 struct dpif_backer
*backer
;
1215 backer
= shash_find_data(&all_dpif_backers
, type
);
1217 /* This is not necessarily a problem, since backers are only
1218 * created on demand. */
1222 if (backer
->governor
) {
1223 governor_wait(backer
->governor
);
1226 timer_wait(&backer
->next_expiration
);
1229 /* Basic life-cycle. */
1231 static int add_internal_flows(struct ofproto_dpif
*);
1233 static struct ofproto
*
1236 struct ofproto_dpif
*ofproto
= xmalloc(sizeof *ofproto
);
1237 return &ofproto
->up
;
1241 dealloc(struct ofproto
*ofproto_
)
1243 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1248 close_dpif_backer(struct dpif_backer
*backer
)
1250 struct shash_node
*node
;
1252 ovs_assert(backer
->refcount
> 0);
1254 if (--backer
->refcount
) {
1258 drop_key_clear(backer
);
1259 hmap_destroy(&backer
->drop_keys
);
1261 simap_destroy(&backer
->tnl_backers
);
1262 hmap_destroy(&backer
->odp_to_ofport_map
);
1263 node
= shash_find(&all_dpif_backers
, backer
->type
);
1265 shash_delete(&all_dpif_backers
, node
);
1266 dpif_close(backer
->dpif
);
1268 ovs_assert(hmap_is_empty(&backer
->subfacets
));
1269 hmap_destroy(&backer
->subfacets
);
1270 governor_destroy(backer
->governor
);
1275 /* Datapath port slated for removal from datapath. */
1276 struct odp_garbage
{
1277 struct list list_node
;
1282 open_dpif_backer(const char *type
, struct dpif_backer
**backerp
)
1284 struct dpif_backer
*backer
;
1285 struct dpif_port_dump port_dump
;
1286 struct dpif_port port
;
1287 struct shash_node
*node
;
1288 struct list garbage_list
;
1289 struct odp_garbage
*garbage
, *next
;
1295 backer
= shash_find_data(&all_dpif_backers
, type
);
1302 backer_name
= xasprintf("ovs-%s", type
);
1304 /* Remove any existing datapaths, since we assume we're the only
1305 * userspace controlling the datapath. */
1307 dp_enumerate_names(type
, &names
);
1308 SSET_FOR_EACH(name
, &names
) {
1309 struct dpif
*old_dpif
;
1311 /* Don't remove our backer if it exists. */
1312 if (!strcmp(name
, backer_name
)) {
1316 if (dpif_open(name
, type
, &old_dpif
)) {
1317 VLOG_WARN("couldn't open old datapath %s to remove it", name
);
1319 dpif_delete(old_dpif
);
1320 dpif_close(old_dpif
);
1323 sset_destroy(&names
);
1325 backer
= xmalloc(sizeof *backer
);
1327 error
= dpif_create_and_open(backer_name
, type
, &backer
->dpif
);
1330 VLOG_ERR("failed to open datapath of type %s: %s", type
,
1336 backer
->type
= xstrdup(type
);
1337 backer
->governor
= NULL
;
1338 backer
->refcount
= 1;
1339 hmap_init(&backer
->odp_to_ofport_map
);
1340 hmap_init(&backer
->drop_keys
);
1341 hmap_init(&backer
->subfacets
);
1342 timer_set_duration(&backer
->next_expiration
, 1000);
1343 backer
->need_revalidate
= 0;
1344 simap_init(&backer
->tnl_backers
);
1345 tag_set_init(&backer
->revalidate_set
);
1346 backer
->recv_set_enable
= !ofproto_get_flow_restore_wait();
1349 if (backer
->recv_set_enable
) {
1350 dpif_flow_flush(backer
->dpif
);
1353 /* Loop through the ports already on the datapath and remove any
1354 * that we don't need anymore. */
1355 list_init(&garbage_list
);
1356 dpif_port_dump_start(&port_dump
, backer
->dpif
);
1357 while (dpif_port_dump_next(&port_dump
, &port
)) {
1358 node
= shash_find(&init_ofp_ports
, port
.name
);
1359 if (!node
&& strcmp(port
.name
, dpif_base_name(backer
->dpif
))) {
1360 garbage
= xmalloc(sizeof *garbage
);
1361 garbage
->odp_port
= port
.port_no
;
1362 list_push_front(&garbage_list
, &garbage
->list_node
);
1365 dpif_port_dump_done(&port_dump
);
1367 LIST_FOR_EACH_SAFE (garbage
, next
, list_node
, &garbage_list
) {
1368 dpif_port_del(backer
->dpif
, garbage
->odp_port
);
1369 list_remove(&garbage
->list_node
);
1373 shash_add(&all_dpif_backers
, type
, backer
);
1375 error
= dpif_recv_set(backer
->dpif
, backer
->recv_set_enable
);
1377 VLOG_ERR("failed to listen on datapath of type %s: %s",
1378 type
, strerror(error
));
1379 close_dpif_backer(backer
);
1383 backer
->max_n_subfacet
= 0;
1384 backer
->created
= time_msec();
1385 backer
->last_minute
= backer
->created
;
1386 memset(&backer
->hourly
, 0, sizeof backer
->hourly
);
1387 memset(&backer
->daily
, 0, sizeof backer
->daily
);
1388 memset(&backer
->lifetime
, 0, sizeof backer
->lifetime
);
1389 backer
->subfacet_add_count
= 0;
1390 backer
->subfacet_del_count
= 0;
1391 backer
->total_subfacet_add_count
= 0;
1392 backer
->total_subfacet_del_count
= 0;
1393 backer
->avg_n_subfacet
= 0;
1394 backer
->avg_subfacet_life
= 0;
1400 construct(struct ofproto
*ofproto_
)
1402 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1403 struct shash_node
*node
, *next
;
1408 error
= open_dpif_backer(ofproto
->up
.type
, &ofproto
->backer
);
1413 max_ports
= dpif_get_max_ports(ofproto
->backer
->dpif
);
1414 ofproto_init_max_ports(ofproto_
, MIN(max_ports
, OFPP_MAX
));
1416 ofproto
->netflow
= NULL
;
1417 ofproto
->sflow
= NULL
;
1418 ofproto
->ipfix
= NULL
;
1419 ofproto
->stp
= NULL
;
1420 hmap_init(&ofproto
->bundles
);
1421 ofproto
->ml
= mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME
);
1422 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1423 ofproto
->mirrors
[i
] = NULL
;
1425 ofproto
->has_bonded_bundles
= false;
1427 classifier_init(&ofproto
->facets
);
1428 ofproto
->consistency_rl
= LLONG_MIN
;
1430 for (i
= 0; i
< N_TABLES
; i
++) {
1431 struct table_dpif
*table
= &ofproto
->tables
[i
];
1433 table
->catchall_table
= NULL
;
1434 table
->other_table
= NULL
;
1435 table
->basis
= random_uint32();
1438 list_init(&ofproto
->completions
);
1440 ofproto_dpif_unixctl_init();
1442 ofproto
->has_mirrors
= false;
1443 ofproto
->has_bundle_action
= false;
1445 hmap_init(&ofproto
->vlandev_map
);
1446 hmap_init(&ofproto
->realdev_vid_map
);
1448 sset_init(&ofproto
->ports
);
1449 sset_init(&ofproto
->ghost_ports
);
1450 sset_init(&ofproto
->port_poll_set
);
1451 ofproto
->port_poll_errno
= 0;
1453 SHASH_FOR_EACH_SAFE (node
, next
, &init_ofp_ports
) {
1454 struct iface_hint
*iface_hint
= node
->data
;
1456 if (!strcmp(iface_hint
->br_name
, ofproto
->up
.name
)) {
1457 /* Check if the datapath already has this port. */
1458 if (dpif_port_exists(ofproto
->backer
->dpif
, node
->name
)) {
1459 sset_add(&ofproto
->ports
, node
->name
);
1462 free(iface_hint
->br_name
);
1463 free(iface_hint
->br_type
);
1465 shash_delete(&init_ofp_ports
, node
);
1469 hmap_insert(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
,
1470 hash_string(ofproto
->up
.name
, 0));
1471 memset(&ofproto
->stats
, 0, sizeof ofproto
->stats
);
1473 ofproto_init_tables(ofproto_
, N_TABLES
);
1474 error
= add_internal_flows(ofproto
);
1475 ofproto
->up
.tables
[TBL_INTERNAL
].flags
= OFTABLE_HIDDEN
| OFTABLE_READONLY
;
1478 ofproto
->n_missed
= 0;
1484 add_internal_flow(struct ofproto_dpif
*ofproto
, int id
,
1485 const struct ofpbuf
*ofpacts
, struct rule_dpif
**rulep
)
1487 struct ofputil_flow_mod fm
;
1490 match_init_catchall(&fm
.match
);
1492 match_set_reg(&fm
.match
, 0, id
);
1493 fm
.new_cookie
= htonll(0);
1494 fm
.cookie
= htonll(0);
1495 fm
.cookie_mask
= htonll(0);
1496 fm
.table_id
= TBL_INTERNAL
;
1497 fm
.command
= OFPFC_ADD
;
1498 fm
.idle_timeout
= 0;
1499 fm
.hard_timeout
= 0;
1503 fm
.ofpacts
= ofpacts
->data
;
1504 fm
.ofpacts_len
= ofpacts
->size
;
1506 error
= ofproto_flow_mod(&ofproto
->up
, &fm
);
1508 VLOG_ERR_RL(&rl
, "failed to add internal flow %d (%s)",
1509 id
, ofperr_to_string(error
));
1513 *rulep
= rule_dpif_lookup__(ofproto
, &fm
.match
.flow
, NULL
, TBL_INTERNAL
);
1514 ovs_assert(*rulep
!= NULL
);
1520 add_internal_flows(struct ofproto_dpif
*ofproto
)
1522 struct ofpact_controller
*controller
;
1523 uint64_t ofpacts_stub
[128 / 8];
1524 struct ofpbuf ofpacts
;
1528 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
1531 controller
= ofpact_put_CONTROLLER(&ofpacts
);
1532 controller
->max_len
= UINT16_MAX
;
1533 controller
->controller_id
= 0;
1534 controller
->reason
= OFPR_NO_MATCH
;
1535 ofpact_pad(&ofpacts
);
1537 error
= add_internal_flow(ofproto
, id
++, &ofpacts
, &ofproto
->miss_rule
);
1542 ofpbuf_clear(&ofpacts
);
1543 error
= add_internal_flow(ofproto
, id
++, &ofpacts
,
1544 &ofproto
->no_packet_in_rule
);
1549 error
= add_internal_flow(ofproto
, id
++, &ofpacts
,
1550 &ofproto
->drop_frags_rule
);
1555 complete_operations(struct ofproto_dpif
*ofproto
)
1557 struct dpif_completion
*c
, *next
;
1559 LIST_FOR_EACH_SAFE (c
, next
, list_node
, &ofproto
->completions
) {
1560 ofoperation_complete(c
->op
, 0);
1561 list_remove(&c
->list_node
);
1567 destruct(struct ofproto
*ofproto_
)
1569 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1570 struct rule_dpif
*rule
, *next_rule
;
1571 struct oftable
*table
;
1574 hmap_remove(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
);
1575 complete_operations(ofproto
);
1577 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
1578 struct cls_cursor cursor
;
1580 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1581 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
1582 ofproto_rule_destroy(&rule
->up
);
1586 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1587 mirror_destroy(ofproto
->mirrors
[i
]);
1590 netflow_destroy(ofproto
->netflow
);
1591 dpif_sflow_destroy(ofproto
->sflow
);
1592 hmap_destroy(&ofproto
->bundles
);
1593 mac_learning_destroy(ofproto
->ml
);
1595 classifier_destroy(&ofproto
->facets
);
1597 hmap_destroy(&ofproto
->vlandev_map
);
1598 hmap_destroy(&ofproto
->realdev_vid_map
);
1600 sset_destroy(&ofproto
->ports
);
1601 sset_destroy(&ofproto
->ghost_ports
);
1602 sset_destroy(&ofproto
->port_poll_set
);
1604 close_dpif_backer(ofproto
->backer
);
1608 run_fast(struct ofproto
*ofproto_
)
1610 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1611 struct ofport_dpif
*ofport
;
1613 /* Do not perform any periodic activity required by 'ofproto' while
1614 * waiting for flow restore to complete. */
1615 if (ofproto_get_flow_restore_wait()) {
1619 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1620 port_run_fast(ofport
);
1627 run(struct ofproto
*ofproto_
)
1629 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1630 struct ofport_dpif
*ofport
;
1631 struct ofbundle
*bundle
;
1635 complete_operations(ofproto
);
1638 /* Do not perform any periodic activity below required by 'ofproto' while
1639 * waiting for flow restore to complete. */
1640 if (ofproto_get_flow_restore_wait()) {
1644 error
= run_fast(ofproto_
);
1649 if (ofproto
->netflow
) {
1650 if (netflow_run(ofproto
->netflow
)) {
1651 send_netflow_active_timeouts(ofproto
);
1654 if (ofproto
->sflow
) {
1655 dpif_sflow_run(ofproto
->sflow
);
1658 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1661 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1666 mac_learning_run(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
1668 /* Check the consistency of a random facet, to aid debugging. */
1669 if (time_msec() >= ofproto
->consistency_rl
1670 && !classifier_is_empty(&ofproto
->facets
)
1671 && !ofproto
->backer
->need_revalidate
) {
1672 struct cls_table
*table
;
1673 struct cls_rule
*cr
;
1674 struct facet
*facet
;
1676 ofproto
->consistency_rl
= time_msec() + 250;
1678 table
= CONTAINER_OF(hmap_random_node(&ofproto
->facets
.tables
),
1679 struct cls_table
, hmap_node
);
1680 cr
= CONTAINER_OF(hmap_random_node(&table
->rules
), struct cls_rule
,
1682 facet
= CONTAINER_OF(cr
, struct facet
, cr
);
1684 if (!tag_set_intersects(&ofproto
->backer
->revalidate_set
,
1685 facet
->xout
.tags
)) {
1686 if (!facet_check_consistency(facet
)) {
1687 ofproto
->backer
->need_revalidate
= REV_INCONSISTENCY
;
1696 wait(struct ofproto
*ofproto_
)
1698 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1699 struct ofport_dpif
*ofport
;
1700 struct ofbundle
*bundle
;
1702 if (!clogged
&& !list_is_empty(&ofproto
->completions
)) {
1703 poll_immediate_wake();
1706 if (ofproto_get_flow_restore_wait()) {
1710 dpif_wait(ofproto
->backer
->dpif
);
1711 dpif_recv_wait(ofproto
->backer
->dpif
);
1712 if (ofproto
->sflow
) {
1713 dpif_sflow_wait(ofproto
->sflow
);
1715 if (!tag_set_is_empty(&ofproto
->backer
->revalidate_set
)) {
1716 poll_immediate_wake();
1718 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1721 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
1722 bundle_wait(bundle
);
1724 if (ofproto
->netflow
) {
1725 netflow_wait(ofproto
->netflow
);
1727 mac_learning_wait(ofproto
->ml
);
1729 if (ofproto
->backer
->need_revalidate
) {
1730 /* Shouldn't happen, but if it does just go around again. */
1731 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1732 poll_immediate_wake();
1737 get_memory_usage(const struct ofproto
*ofproto_
, struct simap
*usage
)
1739 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1740 struct cls_cursor cursor
;
1741 size_t n_subfacets
= 0;
1742 struct facet
*facet
;
1744 simap_increase(usage
, "facets", classifier_count(&ofproto
->facets
));
1746 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
1747 CLS_CURSOR_FOR_EACH (facet
, cr
, &cursor
) {
1748 n_subfacets
+= list_size(&facet
->subfacets
);
1750 simap_increase(usage
, "subfacets", n_subfacets
);
1754 flush(struct ofproto
*ofproto_
)
1756 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1757 struct subfacet
*subfacet
, *next_subfacet
;
1758 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
1762 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
1763 &ofproto
->backer
->subfacets
) {
1764 if (ofproto_dpif_cast(subfacet
->facet
->rule
->up
.ofproto
) != ofproto
) {
1768 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
1769 batch
[n_batch
++] = subfacet
;
1770 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
1771 subfacet_destroy_batch(ofproto
->backer
, batch
, n_batch
);
1775 subfacet_destroy(subfacet
);
1780 subfacet_destroy_batch(ofproto
->backer
, batch
, n_batch
);
1785 get_features(struct ofproto
*ofproto_ OVS_UNUSED
,
1786 bool *arp_match_ip
, enum ofputil_action_bitmap
*actions
)
1788 *arp_match_ip
= true;
1789 *actions
= (OFPUTIL_A_OUTPUT
|
1790 OFPUTIL_A_SET_VLAN_VID
|
1791 OFPUTIL_A_SET_VLAN_PCP
|
1792 OFPUTIL_A_STRIP_VLAN
|
1793 OFPUTIL_A_SET_DL_SRC
|
1794 OFPUTIL_A_SET_DL_DST
|
1795 OFPUTIL_A_SET_NW_SRC
|
1796 OFPUTIL_A_SET_NW_DST
|
1797 OFPUTIL_A_SET_NW_TOS
|
1798 OFPUTIL_A_SET_TP_SRC
|
1799 OFPUTIL_A_SET_TP_DST
|
1804 get_tables(struct ofproto
*ofproto_
, struct ofp12_table_stats
*ots
)
1806 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1807 struct dpif_dp_stats s
;
1808 uint64_t n_miss
, n_no_pkt_in
, n_bytes
, n_dropped_frags
;
1811 strcpy(ots
->name
, "classifier");
1813 dpif_get_dp_stats(ofproto
->backer
->dpif
, &s
);
1814 rule_get_stats(&ofproto
->miss_rule
->up
, &n_miss
, &n_bytes
);
1815 rule_get_stats(&ofproto
->no_packet_in_rule
->up
, &n_no_pkt_in
, &n_bytes
);
1816 rule_get_stats(&ofproto
->drop_frags_rule
->up
, &n_dropped_frags
, &n_bytes
);
1818 n_lookup
= s
.n_hit
+ s
.n_missed
- n_dropped_frags
;
1819 ots
->lookup_count
= htonll(n_lookup
);
1820 ots
->matched_count
= htonll(n_lookup
- n_miss
- n_no_pkt_in
);
1823 static struct ofport
*
1826 struct ofport_dpif
*port
= xmalloc(sizeof *port
);
1831 port_dealloc(struct ofport
*port_
)
1833 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1838 port_construct(struct ofport
*port_
)
1840 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1841 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1842 const struct netdev
*netdev
= port
->up
.netdev
;
1843 char namebuf
[NETDEV_VPORT_NAME_BUFSIZE
];
1844 struct dpif_port dpif_port
;
1847 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1848 port
->bundle
= NULL
;
1851 port
->tag
= tag_create_random();
1852 port
->may_enable
= true;
1853 port
->stp_port
= NULL
;
1854 port
->stp_state
= STP_DISABLED
;
1855 port
->tnl_port
= NULL
;
1856 hmap_init(&port
->priorities
);
1857 port
->realdev_ofp_port
= 0;
1858 port
->vlandev_vid
= 0;
1859 port
->carrier_seq
= netdev_get_carrier_resets(netdev
);
1861 if (netdev_vport_is_patch(netdev
)) {
1862 /* By bailing out here, we don't submit the port to the sFlow module
1863 * to be considered for counter polling export. This is correct
1864 * because the patch port represents an interface that sFlow considers
1865 * to be "internal" to the switch as a whole, and therefore not an
1866 * candidate for counter polling. */
1867 port
->odp_port
= OVSP_NONE
;
1871 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
1872 netdev_vport_get_dpif_port(netdev
, namebuf
,
1879 port
->odp_port
= dpif_port
.port_no
;
1881 if (netdev_get_tunnel_config(netdev
)) {
1882 port
->tnl_port
= tnl_port_add(&port
->up
, port
->odp_port
);
1884 /* Sanity-check that a mapping doesn't already exist. This
1885 * shouldn't happen for non-tunnel ports. */
1886 if (odp_port_to_ofp_port(ofproto
, port
->odp_port
) != OFPP_NONE
) {
1887 VLOG_ERR("port %s already has an OpenFlow port number",
1889 dpif_port_destroy(&dpif_port
);
1893 hmap_insert(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
,
1894 hash_int(port
->odp_port
, 0));
1896 dpif_port_destroy(&dpif_port
);
1898 if (ofproto
->sflow
) {
1899 dpif_sflow_add_port(ofproto
->sflow
, port_
, port
->odp_port
);
1906 port_destruct(struct ofport
*port_
)
1908 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1909 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1910 const char *devname
= netdev_get_name(port
->up
.netdev
);
1911 char namebuf
[NETDEV_VPORT_NAME_BUFSIZE
];
1912 const char *dp_port_name
;
1914 dp_port_name
= netdev_vport_get_dpif_port(port
->up
.netdev
, namebuf
,
1916 if (dpif_port_exists(ofproto
->backer
->dpif
, dp_port_name
)) {
1917 /* The underlying device is still there, so delete it. This
1918 * happens when the ofproto is being destroyed, since the caller
1919 * assumes that removal of attached ports will happen as part of
1921 if (!port
->tnl_port
) {
1922 dpif_port_del(ofproto
->backer
->dpif
, port
->odp_port
);
1924 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1927 if (port
->odp_port
!= OVSP_NONE
&& !port
->tnl_port
) {
1928 hmap_remove(&ofproto
->backer
->odp_to_ofport_map
, &port
->odp_port_node
);
1931 tnl_port_del(port
->tnl_port
);
1932 sset_find_and_delete(&ofproto
->ports
, devname
);
1933 sset_find_and_delete(&ofproto
->ghost_ports
, devname
);
1934 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1935 bundle_remove(port_
);
1936 set_cfm(port_
, NULL
);
1937 set_bfd(port_
, NULL
);
1938 if (ofproto
->sflow
) {
1939 dpif_sflow_del_port(ofproto
->sflow
, port
->odp_port
);
1942 ofport_clear_priorities(port
);
1943 hmap_destroy(&port
->priorities
);
1947 port_modified(struct ofport
*port_
)
1949 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1951 if (port
->bundle
&& port
->bundle
->bond
) {
1952 bond_slave_set_netdev(port
->bundle
->bond
, port
, port
->up
.netdev
);
1956 cfm_set_netdev(port
->cfm
, port
->up
.netdev
);
1961 port_reconfigured(struct ofport
*port_
, enum ofputil_port_config old_config
)
1963 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1964 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1965 enum ofputil_port_config changed
= old_config
^ port
->up
.pp
.config
;
1967 if (changed
& (OFPUTIL_PC_NO_RECV
| OFPUTIL_PC_NO_RECV_STP
|
1968 OFPUTIL_PC_NO_FWD
| OFPUTIL_PC_NO_FLOOD
|
1969 OFPUTIL_PC_NO_PACKET_IN
)) {
1970 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1972 if (changed
& OFPUTIL_PC_NO_FLOOD
&& port
->bundle
) {
1973 bundle_update(port
->bundle
);
1979 set_sflow(struct ofproto
*ofproto_
,
1980 const struct ofproto_sflow_options
*sflow_options
)
1982 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1983 struct dpif_sflow
*ds
= ofproto
->sflow
;
1985 if (sflow_options
) {
1987 struct ofport_dpif
*ofport
;
1989 ds
= ofproto
->sflow
= dpif_sflow_create();
1990 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1991 dpif_sflow_add_port(ds
, &ofport
->up
, ofport
->odp_port
);
1993 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
1995 dpif_sflow_set_options(ds
, sflow_options
);
1998 dpif_sflow_destroy(ds
);
1999 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2000 ofproto
->sflow
= NULL
;
2008 struct ofproto
*ofproto_
,
2009 const struct ofproto_ipfix_bridge_exporter_options
*bridge_exporter_options
,
2010 const struct ofproto_ipfix_flow_exporter_options
*flow_exporters_options
,
2011 size_t n_flow_exporters_options
)
2013 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2014 struct dpif_ipfix
*di
= ofproto
->ipfix
;
2016 if (bridge_exporter_options
|| flow_exporters_options
) {
2018 di
= ofproto
->ipfix
= dpif_ipfix_create();
2020 dpif_ipfix_set_options(
2021 di
, bridge_exporter_options
, flow_exporters_options
,
2022 n_flow_exporters_options
);
2025 dpif_ipfix_destroy(di
);
2026 ofproto
->ipfix
= NULL
;
2033 set_cfm(struct ofport
*ofport_
, const struct cfm_settings
*s
)
2035 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2042 struct ofproto_dpif
*ofproto
;
2044 ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2045 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2046 ofport
->cfm
= cfm_create(ofport
->up
.netdev
);
2049 if (cfm_configure(ofport
->cfm
, s
)) {
2055 cfm_destroy(ofport
->cfm
);
2061 get_cfm_status(const struct ofport
*ofport_
,
2062 struct ofproto_cfm_status
*status
)
2064 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2067 status
->faults
= cfm_get_fault(ofport
->cfm
);
2068 status
->remote_opstate
= cfm_get_opup(ofport
->cfm
);
2069 status
->health
= cfm_get_health(ofport
->cfm
);
2070 cfm_get_remote_mpids(ofport
->cfm
, &status
->rmps
, &status
->n_rmps
);
2078 set_bfd(struct ofport
*ofport_
, const struct smap
*cfg
)
2080 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport_
->ofproto
);
2081 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2085 ofport
->bfd
= bfd_configure(old
, netdev_get_name(ofport
->up
.netdev
), cfg
);
2086 if (ofport
->bfd
!= old
) {
2087 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2094 get_bfd_status(struct ofport
*ofport_
, struct smap
*smap
)
2096 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2099 bfd_get_status(ofport
->bfd
, smap
);
2106 /* Spanning Tree. */
2109 send_bpdu_cb(struct ofpbuf
*pkt
, int port_num
, void *ofproto_
)
2111 struct ofproto_dpif
*ofproto
= ofproto_
;
2112 struct stp_port
*sp
= stp_get_port(ofproto
->stp
, port_num
);
2113 struct ofport_dpif
*ofport
;
2115 ofport
= stp_port_get_aux(sp
);
2117 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on unknown port %d",
2118 ofproto
->up
.name
, port_num
);
2120 struct eth_header
*eth
= pkt
->l2
;
2122 netdev_get_etheraddr(ofport
->up
.netdev
, eth
->eth_src
);
2123 if (eth_addr_is_zero(eth
->eth_src
)) {
2124 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on port %d "
2125 "with unknown MAC", ofproto
->up
.name
, port_num
);
2127 send_packet(ofport
, pkt
);
2133 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
2135 set_stp(struct ofproto
*ofproto_
, const struct ofproto_stp_settings
*s
)
2137 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2139 /* Only revalidate flows if the configuration changed. */
2140 if (!s
!= !ofproto
->stp
) {
2141 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2145 if (!ofproto
->stp
) {
2146 ofproto
->stp
= stp_create(ofproto_
->name
, s
->system_id
,
2147 send_bpdu_cb
, ofproto
);
2148 ofproto
->stp_last_tick
= time_msec();
2151 stp_set_bridge_id(ofproto
->stp
, s
->system_id
);
2152 stp_set_bridge_priority(ofproto
->stp
, s
->priority
);
2153 stp_set_hello_time(ofproto
->stp
, s
->hello_time
);
2154 stp_set_max_age(ofproto
->stp
, s
->max_age
);
2155 stp_set_forward_delay(ofproto
->stp
, s
->fwd_delay
);
2157 struct ofport
*ofport
;
2159 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->up
.ports
) {
2160 set_stp_port(ofport
, NULL
);
2163 stp_destroy(ofproto
->stp
);
2164 ofproto
->stp
= NULL
;
2171 get_stp_status(struct ofproto
*ofproto_
, struct ofproto_stp_status
*s
)
2173 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2177 s
->bridge_id
= stp_get_bridge_id(ofproto
->stp
);
2178 s
->designated_root
= stp_get_designated_root(ofproto
->stp
);
2179 s
->root_path_cost
= stp_get_root_path_cost(ofproto
->stp
);
2188 update_stp_port_state(struct ofport_dpif
*ofport
)
2190 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2191 enum stp_state state
;
2193 /* Figure out new state. */
2194 state
= ofport
->stp_port
? stp_port_get_state(ofport
->stp_port
)
2198 if (ofport
->stp_state
!= state
) {
2199 enum ofputil_port_state of_state
;
2202 VLOG_DBG_RL(&rl
, "port %s: STP state changed from %s to %s",
2203 netdev_get_name(ofport
->up
.netdev
),
2204 stp_state_name(ofport
->stp_state
),
2205 stp_state_name(state
));
2206 if (stp_learn_in_state(ofport
->stp_state
)
2207 != stp_learn_in_state(state
)) {
2208 /* xxx Learning action flows should also be flushed. */
2209 mac_learning_flush(ofproto
->ml
,
2210 &ofproto
->backer
->revalidate_set
);
2212 fwd_change
= stp_forward_in_state(ofport
->stp_state
)
2213 != stp_forward_in_state(state
);
2215 ofproto
->backer
->need_revalidate
= REV_STP
;
2216 ofport
->stp_state
= state
;
2217 ofport
->stp_state_entered
= time_msec();
2219 if (fwd_change
&& ofport
->bundle
) {
2220 bundle_update(ofport
->bundle
);
2223 /* Update the STP state bits in the OpenFlow port description. */
2224 of_state
= ofport
->up
.pp
.state
& ~OFPUTIL_PS_STP_MASK
;
2225 of_state
|= (state
== STP_LISTENING
? OFPUTIL_PS_STP_LISTEN
2226 : state
== STP_LEARNING
? OFPUTIL_PS_STP_LEARN
2227 : state
== STP_FORWARDING
? OFPUTIL_PS_STP_FORWARD
2228 : state
== STP_BLOCKING
? OFPUTIL_PS_STP_BLOCK
2230 ofproto_port_set_state(&ofport
->up
, of_state
);
2234 /* Configures STP on 'ofport_' using the settings defined in 's'. The
2235 * caller is responsible for assigning STP port numbers and ensuring
2236 * there are no duplicates. */
2238 set_stp_port(struct ofport
*ofport_
,
2239 const struct ofproto_port_stp_settings
*s
)
2241 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2242 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2243 struct stp_port
*sp
= ofport
->stp_port
;
2245 if (!s
|| !s
->enable
) {
2247 ofport
->stp_port
= NULL
;
2248 stp_port_disable(sp
);
2249 update_stp_port_state(ofport
);
2252 } else if (sp
&& stp_port_no(sp
) != s
->port_num
2253 && ofport
== stp_port_get_aux(sp
)) {
2254 /* The port-id changed, so disable the old one if it's not
2255 * already in use by another port. */
2256 stp_port_disable(sp
);
2259 sp
= ofport
->stp_port
= stp_get_port(ofproto
->stp
, s
->port_num
);
2260 stp_port_enable(sp
);
2262 stp_port_set_aux(sp
, ofport
);
2263 stp_port_set_priority(sp
, s
->priority
);
2264 stp_port_set_path_cost(sp
, s
->path_cost
);
2266 update_stp_port_state(ofport
);
2272 get_stp_port_status(struct ofport
*ofport_
,
2273 struct ofproto_port_stp_status
*s
)
2275 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2276 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2277 struct stp_port
*sp
= ofport
->stp_port
;
2279 if (!ofproto
->stp
|| !sp
) {
2285 s
->port_id
= stp_port_get_id(sp
);
2286 s
->state
= stp_port_get_state(sp
);
2287 s
->sec_in_state
= (time_msec() - ofport
->stp_state_entered
) / 1000;
2288 s
->role
= stp_port_get_role(sp
);
2289 stp_port_get_counts(sp
, &s
->tx_count
, &s
->rx_count
, &s
->error_count
);
2295 stp_run(struct ofproto_dpif
*ofproto
)
2298 long long int now
= time_msec();
2299 long long int elapsed
= now
- ofproto
->stp_last_tick
;
2300 struct stp_port
*sp
;
2303 stp_tick(ofproto
->stp
, MIN(INT_MAX
, elapsed
));
2304 ofproto
->stp_last_tick
= now
;
2306 while (stp_get_changed_port(ofproto
->stp
, &sp
)) {
2307 struct ofport_dpif
*ofport
= stp_port_get_aux(sp
);
2310 update_stp_port_state(ofport
);
2314 if (stp_check_and_reset_fdb_flush(ofproto
->stp
)) {
2315 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
2321 stp_wait(struct ofproto_dpif
*ofproto
)
2324 poll_timer_wait(1000);
2328 /* Returns true if STP should process 'flow'. */
2330 stp_should_process_flow(const struct flow
*flow
)
2332 return eth_addr_equals(flow
->dl_dst
, eth_addr_stp
);
2336 stp_process_packet(const struct ofport_dpif
*ofport
,
2337 const struct ofpbuf
*packet
)
2339 struct ofpbuf payload
= *packet
;
2340 struct eth_header
*eth
= payload
.data
;
2341 struct stp_port
*sp
= ofport
->stp_port
;
2343 /* Sink packets on ports that have STP disabled when the bridge has
2345 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
2349 /* Trim off padding on payload. */
2350 if (payload
.size
> ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
2351 payload
.size
= ntohs(eth
->eth_type
) + ETH_HEADER_LEN
;
2354 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
2355 stp_received_bpdu(sp
, payload
.data
, payload
.size
);
2359 static struct priority_to_dscp
*
2360 get_priority(const struct ofport_dpif
*ofport
, uint32_t priority
)
2362 struct priority_to_dscp
*pdscp
;
2365 hash
= hash_int(priority
, 0);
2366 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &ofport
->priorities
) {
2367 if (pdscp
->priority
== priority
) {
2375 ofport_clear_priorities(struct ofport_dpif
*ofport
)
2377 struct priority_to_dscp
*pdscp
, *next
;
2379 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &ofport
->priorities
) {
2380 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
2386 set_queues(struct ofport
*ofport_
,
2387 const struct ofproto_port_queue
*qdscp_list
,
2390 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2391 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2392 struct hmap
new = HMAP_INITIALIZER(&new);
2395 for (i
= 0; i
< n_qdscp
; i
++) {
2396 struct priority_to_dscp
*pdscp
;
2400 dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
2401 if (dpif_queue_to_priority(ofproto
->backer
->dpif
, qdscp_list
[i
].queue
,
2406 pdscp
= get_priority(ofport
, priority
);
2408 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
2410 pdscp
= xmalloc(sizeof *pdscp
);
2411 pdscp
->priority
= priority
;
2413 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2416 if (pdscp
->dscp
!= dscp
) {
2418 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2421 hmap_insert(&new, &pdscp
->hmap_node
, hash_int(pdscp
->priority
, 0));
2424 if (!hmap_is_empty(&ofport
->priorities
)) {
2425 ofport_clear_priorities(ofport
);
2426 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2429 hmap_swap(&new, &ofport
->priorities
);
2437 /* Expires all MAC learning entries associated with 'bundle' and forces its
2438 * ofproto to revalidate every flow.
2440 * Normally MAC learning entries are removed only from the ofproto associated
2441 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2442 * are removed from every ofproto. When patch ports and SLB bonds are in use
2443 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2444 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2445 * with the host from which it migrated. */
2447 bundle_flush_macs(struct ofbundle
*bundle
, bool all_ofprotos
)
2449 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2450 struct mac_learning
*ml
= ofproto
->ml
;
2451 struct mac_entry
*mac
, *next_mac
;
2453 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2454 LIST_FOR_EACH_SAFE (mac
, next_mac
, lru_node
, &ml
->lrus
) {
2455 if (mac
->port
.p
== bundle
) {
2457 struct ofproto_dpif
*o
;
2459 HMAP_FOR_EACH (o
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
2461 struct mac_entry
*e
;
2463 e
= mac_learning_lookup(o
->ml
, mac
->mac
, mac
->vlan
,
2466 mac_learning_expire(o
->ml
, e
);
2472 mac_learning_expire(ml
, mac
);
2477 static struct ofbundle
*
2478 bundle_lookup(const struct ofproto_dpif
*ofproto
, void *aux
)
2480 struct ofbundle
*bundle
;
2482 HMAP_FOR_EACH_IN_BUCKET (bundle
, hmap_node
, hash_pointer(aux
, 0),
2483 &ofproto
->bundles
) {
2484 if (bundle
->aux
== aux
) {
2491 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
2492 * ones that are found to 'bundles'. */
2494 bundle_lookup_multiple(struct ofproto_dpif
*ofproto
,
2495 void **auxes
, size_t n_auxes
,
2496 struct hmapx
*bundles
)
2500 hmapx_init(bundles
);
2501 for (i
= 0; i
< n_auxes
; i
++) {
2502 struct ofbundle
*bundle
= bundle_lookup(ofproto
, auxes
[i
]);
2504 hmapx_add(bundles
, bundle
);
2510 bundle_update(struct ofbundle
*bundle
)
2512 struct ofport_dpif
*port
;
2514 bundle
->floodable
= true;
2515 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2516 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2517 || !stp_forward_in_state(port
->stp_state
)) {
2518 bundle
->floodable
= false;
2525 bundle_del_port(struct ofport_dpif
*port
)
2527 struct ofbundle
*bundle
= port
->bundle
;
2529 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2531 list_remove(&port
->bundle_node
);
2532 port
->bundle
= NULL
;
2535 lacp_slave_unregister(bundle
->lacp
, port
);
2538 bond_slave_unregister(bundle
->bond
, port
);
2541 bundle_update(bundle
);
2545 bundle_add_port(struct ofbundle
*bundle
, uint16_t ofp_port
,
2546 struct lacp_slave_settings
*lacp
)
2548 struct ofport_dpif
*port
;
2550 port
= get_ofp_port(bundle
->ofproto
, ofp_port
);
2555 if (port
->bundle
!= bundle
) {
2556 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2558 bundle_del_port(port
);
2561 port
->bundle
= bundle
;
2562 list_push_back(&bundle
->ports
, &port
->bundle_node
);
2563 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
2564 || !stp_forward_in_state(port
->stp_state
)) {
2565 bundle
->floodable
= false;
2569 bundle
->ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2570 lacp_slave_register(bundle
->lacp
, port
, lacp
);
2577 bundle_destroy(struct ofbundle
*bundle
)
2579 struct ofproto_dpif
*ofproto
;
2580 struct ofport_dpif
*port
, *next_port
;
2587 ofproto
= bundle
->ofproto
;
2588 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2589 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2591 if (m
->out
== bundle
) {
2593 } else if (hmapx_find_and_delete(&m
->srcs
, bundle
)
2594 || hmapx_find_and_delete(&m
->dsts
, bundle
)) {
2595 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2600 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2601 bundle_del_port(port
);
2604 bundle_flush_macs(bundle
, true);
2605 hmap_remove(&ofproto
->bundles
, &bundle
->hmap_node
);
2607 free(bundle
->trunks
);
2608 lacp_destroy(bundle
->lacp
);
2609 bond_destroy(bundle
->bond
);
2614 bundle_set(struct ofproto
*ofproto_
, void *aux
,
2615 const struct ofproto_bundle_settings
*s
)
2617 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2618 bool need_flush
= false;
2619 struct ofport_dpif
*port
;
2620 struct ofbundle
*bundle
;
2621 unsigned long *trunks
;
2627 bundle_destroy(bundle_lookup(ofproto
, aux
));
2631 ovs_assert(s
->n_slaves
== 1 || s
->bond
!= NULL
);
2632 ovs_assert((s
->lacp
!= NULL
) == (s
->lacp_slaves
!= NULL
));
2634 bundle
= bundle_lookup(ofproto
, aux
);
2636 bundle
= xmalloc(sizeof *bundle
);
2638 bundle
->ofproto
= ofproto
;
2639 hmap_insert(&ofproto
->bundles
, &bundle
->hmap_node
,
2640 hash_pointer(aux
, 0));
2642 bundle
->name
= NULL
;
2644 list_init(&bundle
->ports
);
2645 bundle
->vlan_mode
= PORT_VLAN_TRUNK
;
2647 bundle
->trunks
= NULL
;
2648 bundle
->use_priority_tags
= s
->use_priority_tags
;
2649 bundle
->lacp
= NULL
;
2650 bundle
->bond
= NULL
;
2652 bundle
->floodable
= true;
2654 bundle
->src_mirrors
= 0;
2655 bundle
->dst_mirrors
= 0;
2656 bundle
->mirror_out
= 0;
2659 if (!bundle
->name
|| strcmp(s
->name
, bundle
->name
)) {
2661 bundle
->name
= xstrdup(s
->name
);
2666 if (!bundle
->lacp
) {
2667 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2668 bundle
->lacp
= lacp_create();
2670 lacp_configure(bundle
->lacp
, s
->lacp
);
2672 lacp_destroy(bundle
->lacp
);
2673 bundle
->lacp
= NULL
;
2676 /* Update set of ports. */
2678 for (i
= 0; i
< s
->n_slaves
; i
++) {
2679 if (!bundle_add_port(bundle
, s
->slaves
[i
],
2680 s
->lacp
? &s
->lacp_slaves
[i
] : NULL
)) {
2684 if (!ok
|| list_size(&bundle
->ports
) != s
->n_slaves
) {
2685 struct ofport_dpif
*next_port
;
2687 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
2688 for (i
= 0; i
< s
->n_slaves
; i
++) {
2689 if (s
->slaves
[i
] == port
->up
.ofp_port
) {
2694 bundle_del_port(port
);
2698 ovs_assert(list_size(&bundle
->ports
) <= s
->n_slaves
);
2700 if (list_is_empty(&bundle
->ports
)) {
2701 bundle_destroy(bundle
);
2705 /* Set VLAN tagging mode */
2706 if (s
->vlan_mode
!= bundle
->vlan_mode
2707 || s
->use_priority_tags
!= bundle
->use_priority_tags
) {
2708 bundle
->vlan_mode
= s
->vlan_mode
;
2709 bundle
->use_priority_tags
= s
->use_priority_tags
;
2714 vlan
= (s
->vlan_mode
== PORT_VLAN_TRUNK
? -1
2715 : s
->vlan
>= 0 && s
->vlan
<= 4095 ? s
->vlan
2717 if (vlan
!= bundle
->vlan
) {
2718 bundle
->vlan
= vlan
;
2722 /* Get trunked VLANs. */
2723 switch (s
->vlan_mode
) {
2724 case PORT_VLAN_ACCESS
:
2728 case PORT_VLAN_TRUNK
:
2729 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2732 case PORT_VLAN_NATIVE_UNTAGGED
:
2733 case PORT_VLAN_NATIVE_TAGGED
:
2734 if (vlan
!= 0 && (!s
->trunks
2735 || !bitmap_is_set(s
->trunks
, vlan
)
2736 || bitmap_is_set(s
->trunks
, 0))) {
2737 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2739 trunks
= bitmap_clone(s
->trunks
, 4096);
2741 trunks
= bitmap_allocate1(4096);
2743 bitmap_set1(trunks
, vlan
);
2744 bitmap_set0(trunks
, 0);
2746 trunks
= CONST_CAST(unsigned long *, s
->trunks
);
2753 if (!vlan_bitmap_equal(trunks
, bundle
->trunks
)) {
2754 free(bundle
->trunks
);
2755 if (trunks
== s
->trunks
) {
2756 bundle
->trunks
= vlan_bitmap_clone(trunks
);
2758 bundle
->trunks
= trunks
;
2763 if (trunks
!= s
->trunks
) {
2768 if (!list_is_short(&bundle
->ports
)) {
2769 bundle
->ofproto
->has_bonded_bundles
= true;
2771 if (bond_reconfigure(bundle
->bond
, s
->bond
)) {
2772 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2775 bundle
->bond
= bond_create(s
->bond
);
2776 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
2779 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2780 bond_slave_register(bundle
->bond
, port
, port
->up
.netdev
);
2783 bond_destroy(bundle
->bond
);
2784 bundle
->bond
= NULL
;
2787 /* If we changed something that would affect MAC learning, un-learn
2788 * everything on this port and force flow revalidation. */
2790 bundle_flush_macs(bundle
, false);
2797 bundle_remove(struct ofport
*port_
)
2799 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
2800 struct ofbundle
*bundle
= port
->bundle
;
2803 bundle_del_port(port
);
2804 if (list_is_empty(&bundle
->ports
)) {
2805 bundle_destroy(bundle
);
2806 } else if (list_is_short(&bundle
->ports
)) {
2807 bond_destroy(bundle
->bond
);
2808 bundle
->bond
= NULL
;
2814 send_pdu_cb(void *port_
, const void *pdu
, size_t pdu_size
)
2816 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 10);
2817 struct ofport_dpif
*port
= port_
;
2818 uint8_t ea
[ETH_ADDR_LEN
];
2821 error
= netdev_get_etheraddr(port
->up
.netdev
, ea
);
2823 struct ofpbuf packet
;
2826 ofpbuf_init(&packet
, 0);
2827 packet_pdu
= eth_compose(&packet
, eth_addr_lacp
, ea
, ETH_TYPE_LACP
,
2829 memcpy(packet_pdu
, pdu
, pdu_size
);
2831 send_packet(port
, &packet
);
2832 ofpbuf_uninit(&packet
);
2834 VLOG_ERR_RL(&rl
, "port %s: cannot obtain Ethernet address of iface "
2835 "%s (%s)", port
->bundle
->name
,
2836 netdev_get_name(port
->up
.netdev
), strerror(error
));
2841 bundle_send_learning_packets(struct ofbundle
*bundle
)
2843 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
2844 int error
, n_packets
, n_errors
;
2845 struct mac_entry
*e
;
2847 error
= n_packets
= n_errors
= 0;
2848 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
2849 if (e
->port
.p
!= bundle
) {
2850 struct ofpbuf
*learning_packet
;
2851 struct ofport_dpif
*port
;
2855 /* The assignment to "port" is unnecessary but makes "grep"ing for
2856 * struct ofport_dpif more effective. */
2857 learning_packet
= bond_compose_learning_packet(bundle
->bond
,
2861 ret
= send_packet(port
, learning_packet
);
2862 ofpbuf_delete(learning_packet
);
2872 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2873 VLOG_WARN_RL(&rl
, "bond %s: %d errors sending %d gratuitous learning "
2874 "packets, last error was: %s",
2875 bundle
->name
, n_errors
, n_packets
, strerror(error
));
2877 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2878 bundle
->name
, n_packets
);
2883 bundle_run(struct ofbundle
*bundle
)
2886 lacp_run(bundle
->lacp
, send_pdu_cb
);
2889 struct ofport_dpif
*port
;
2891 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
2892 bond_slave_set_may_enable(bundle
->bond
, port
, port
->may_enable
);
2895 bond_run(bundle
->bond
, &bundle
->ofproto
->backer
->revalidate_set
,
2896 lacp_status(bundle
->lacp
));
2897 if (bond_should_send_learning_packets(bundle
->bond
)) {
2898 bundle_send_learning_packets(bundle
);
2904 bundle_wait(struct ofbundle
*bundle
)
2907 lacp_wait(bundle
->lacp
);
2910 bond_wait(bundle
->bond
);
2917 mirror_scan(struct ofproto_dpif
*ofproto
)
2921 for (idx
= 0; idx
< MAX_MIRRORS
; idx
++) {
2922 if (!ofproto
->mirrors
[idx
]) {
2929 static struct ofmirror
*
2930 mirror_lookup(struct ofproto_dpif
*ofproto
, void *aux
)
2934 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2935 struct ofmirror
*mirror
= ofproto
->mirrors
[i
];
2936 if (mirror
&& mirror
->aux
== aux
) {
2944 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
2946 mirror_update_dups(struct ofproto_dpif
*ofproto
)
2950 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2951 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2954 m
->dup_mirrors
= MIRROR_MASK_C(1) << i
;
2958 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2959 struct ofmirror
*m1
= ofproto
->mirrors
[i
];
2966 for (j
= i
+ 1; j
< MAX_MIRRORS
; j
++) {
2967 struct ofmirror
*m2
= ofproto
->mirrors
[j
];
2969 if (m2
&& m1
->out
== m2
->out
&& m1
->out_vlan
== m2
->out_vlan
) {
2970 m1
->dup_mirrors
|= MIRROR_MASK_C(1) << j
;
2971 m2
->dup_mirrors
|= m1
->dup_mirrors
;
2978 mirror_set(struct ofproto
*ofproto_
, void *aux
,
2979 const struct ofproto_mirror_settings
*s
)
2981 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2982 mirror_mask_t mirror_bit
;
2983 struct ofbundle
*bundle
;
2984 struct ofmirror
*mirror
;
2985 struct ofbundle
*out
;
2986 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
2987 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
2990 mirror
= mirror_lookup(ofproto
, aux
);
2992 mirror_destroy(mirror
);
2998 idx
= mirror_scan(ofproto
);
3000 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
3002 ofproto
->up
.name
, MAX_MIRRORS
, s
->name
);
3006 mirror
= ofproto
->mirrors
[idx
] = xzalloc(sizeof *mirror
);
3007 mirror
->ofproto
= ofproto
;
3010 mirror
->out_vlan
= -1;
3011 mirror
->name
= NULL
;
3014 if (!mirror
->name
|| strcmp(s
->name
, mirror
->name
)) {
3016 mirror
->name
= xstrdup(s
->name
);
3019 /* Get the new configuration. */
3020 if (s
->out_bundle
) {
3021 out
= bundle_lookup(ofproto
, s
->out_bundle
);
3023 mirror_destroy(mirror
);
3029 out_vlan
= s
->out_vlan
;
3031 bundle_lookup_multiple(ofproto
, s
->srcs
, s
->n_srcs
, &srcs
);
3032 bundle_lookup_multiple(ofproto
, s
->dsts
, s
->n_dsts
, &dsts
);
3034 /* If the configuration has not changed, do nothing. */
3035 if (hmapx_equals(&srcs
, &mirror
->srcs
)
3036 && hmapx_equals(&dsts
, &mirror
->dsts
)
3037 && vlan_bitmap_equal(mirror
->vlans
, s
->src_vlans
)
3038 && mirror
->out
== out
3039 && mirror
->out_vlan
== out_vlan
)
3041 hmapx_destroy(&srcs
);
3042 hmapx_destroy(&dsts
);
3046 hmapx_swap(&srcs
, &mirror
->srcs
);
3047 hmapx_destroy(&srcs
);
3049 hmapx_swap(&dsts
, &mirror
->dsts
);
3050 hmapx_destroy(&dsts
);
3052 free(mirror
->vlans
);
3053 mirror
->vlans
= vlan_bitmap_clone(s
->src_vlans
);
3056 mirror
->out_vlan
= out_vlan
;
3058 /* Update bundles. */
3059 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
3060 HMAP_FOR_EACH (bundle
, hmap_node
, &mirror
->ofproto
->bundles
) {
3061 if (hmapx_contains(&mirror
->srcs
, bundle
)) {
3062 bundle
->src_mirrors
|= mirror_bit
;
3064 bundle
->src_mirrors
&= ~mirror_bit
;
3067 if (hmapx_contains(&mirror
->dsts
, bundle
)) {
3068 bundle
->dst_mirrors
|= mirror_bit
;
3070 bundle
->dst_mirrors
&= ~mirror_bit
;
3073 if (mirror
->out
== bundle
) {
3074 bundle
->mirror_out
|= mirror_bit
;
3076 bundle
->mirror_out
&= ~mirror_bit
;
3080 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
3081 ofproto
->has_mirrors
= true;
3082 mac_learning_flush(ofproto
->ml
,
3083 &ofproto
->backer
->revalidate_set
);
3084 mirror_update_dups(ofproto
);
3090 mirror_destroy(struct ofmirror
*mirror
)
3092 struct ofproto_dpif
*ofproto
;
3093 mirror_mask_t mirror_bit
;
3094 struct ofbundle
*bundle
;
3101 ofproto
= mirror
->ofproto
;
3102 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
3103 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
3105 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
3106 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
3107 bundle
->src_mirrors
&= ~mirror_bit
;
3108 bundle
->dst_mirrors
&= ~mirror_bit
;
3109 bundle
->mirror_out
&= ~mirror_bit
;
3112 hmapx_destroy(&mirror
->srcs
);
3113 hmapx_destroy(&mirror
->dsts
);
3114 free(mirror
->vlans
);
3116 ofproto
->mirrors
[mirror
->idx
] = NULL
;
3120 mirror_update_dups(ofproto
);
3122 ofproto
->has_mirrors
= false;
3123 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
3124 if (ofproto
->mirrors
[i
]) {
3125 ofproto
->has_mirrors
= true;
3132 mirror_get_stats(struct ofproto
*ofproto_
, void *aux
,
3133 uint64_t *packets
, uint64_t *bytes
)
3135 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3136 struct ofmirror
*mirror
= mirror_lookup(ofproto
, aux
);
3139 *packets
= *bytes
= UINT64_MAX
;
3145 *packets
= mirror
->packet_count
;
3146 *bytes
= mirror
->byte_count
;
3152 set_flood_vlans(struct ofproto
*ofproto_
, unsigned long *flood_vlans
)
3154 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3155 if (mac_learning_set_flood_vlans(ofproto
->ml
, flood_vlans
)) {
3156 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
3162 is_mirror_output_bundle(const struct ofproto
*ofproto_
, void *aux
)
3164 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3165 struct ofbundle
*bundle
= bundle_lookup(ofproto
, aux
);
3166 return bundle
&& bundle
->mirror_out
!= 0;
3170 forward_bpdu_changed(struct ofproto
*ofproto_
)
3172 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3173 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
3177 set_mac_table_config(struct ofproto
*ofproto_
, unsigned int idle_time
,
3180 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3181 mac_learning_set_idle_time(ofproto
->ml
, idle_time
);
3182 mac_learning_set_max_entries(ofproto
->ml
, max_entries
);
3187 static struct ofport_dpif
*
3188 get_ofp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
3190 struct ofport
*ofport
= ofproto_get_port(&ofproto
->up
, ofp_port
);
3191 return ofport
? ofport_dpif_cast(ofport
) : NULL
;
3194 static struct ofport_dpif
*
3195 get_odp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
3197 struct ofport_dpif
*port
= odp_port_to_ofport(ofproto
->backer
, odp_port
);
3198 return port
&& &ofproto
->up
== port
->up
.ofproto
? port
: NULL
;
3202 ofproto_port_from_dpif_port(struct ofproto_dpif
*ofproto
,
3203 struct ofproto_port
*ofproto_port
,
3204 struct dpif_port
*dpif_port
)
3206 ofproto_port
->name
= dpif_port
->name
;
3207 ofproto_port
->type
= dpif_port
->type
;
3208 ofproto_port
->ofp_port
= odp_port_to_ofp_port(ofproto
, dpif_port
->port_no
);
3211 static struct ofport_dpif
*
3212 ofport_get_peer(const struct ofport_dpif
*ofport_dpif
)
3214 const struct ofproto_dpif
*ofproto
;
3217 peer
= netdev_vport_patch_peer(ofport_dpif
->up
.netdev
);
3222 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
3223 struct ofport
*ofport
;
3225 ofport
= shash_find_data(&ofproto
->up
.port_by_name
, peer
);
3226 if (ofport
&& ofport
->ofproto
->ofproto_class
== &ofproto_dpif_class
) {
3227 return ofport_dpif_cast(ofport
);
3234 port_run_fast(struct ofport_dpif
*ofport
)
3236 if (ofport
->cfm
&& cfm_should_send_ccm(ofport
->cfm
)) {
3237 struct ofpbuf packet
;
3239 ofpbuf_init(&packet
, 0);
3240 cfm_compose_ccm(ofport
->cfm
, &packet
, ofport
->up
.pp
.hw_addr
);
3241 send_packet(ofport
, &packet
);
3242 ofpbuf_uninit(&packet
);
3245 if (ofport
->bfd
&& bfd_should_send_packet(ofport
->bfd
)) {
3246 struct ofpbuf packet
;
3248 ofpbuf_init(&packet
, 0);
3249 bfd_put_packet(ofport
->bfd
, &packet
, ofport
->up
.pp
.hw_addr
);
3250 send_packet(ofport
, &packet
);
3251 ofpbuf_uninit(&packet
);
3256 port_run(struct ofport_dpif
*ofport
)
3258 long long int carrier_seq
= netdev_get_carrier_resets(ofport
->up
.netdev
);
3259 bool carrier_changed
= carrier_seq
!= ofport
->carrier_seq
;
3260 bool enable
= netdev_get_carrier(ofport
->up
.netdev
);
3262 ofport
->carrier_seq
= carrier_seq
;
3264 port_run_fast(ofport
);
3266 if (ofport
->tnl_port
3267 && tnl_port_reconfigure(&ofport
->up
, ofport
->odp_port
,
3268 &ofport
->tnl_port
)) {
3269 ofproto_dpif_cast(ofport
->up
.ofproto
)->backer
->need_revalidate
= true;
3273 int cfm_opup
= cfm_get_opup(ofport
->cfm
);
3275 cfm_run(ofport
->cfm
);
3276 enable
= enable
&& !cfm_get_fault(ofport
->cfm
);
3278 if (cfm_opup
>= 0) {
3279 enable
= enable
&& cfm_opup
;
3284 bfd_run(ofport
->bfd
);
3285 enable
= enable
&& bfd_forwarding(ofport
->bfd
);
3288 if (ofport
->bundle
) {
3289 enable
= enable
&& lacp_slave_may_enable(ofport
->bundle
->lacp
, ofport
);
3290 if (carrier_changed
) {
3291 lacp_slave_carrier_changed(ofport
->bundle
->lacp
, ofport
);
3295 if (ofport
->may_enable
!= enable
) {
3296 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
3298 if (ofproto
->has_bundle_action
) {
3299 ofproto
->backer
->need_revalidate
= REV_PORT_TOGGLED
;
3303 ofport
->may_enable
= enable
;
3307 port_wait(struct ofport_dpif
*ofport
)
3310 cfm_wait(ofport
->cfm
);
3314 bfd_wait(ofport
->bfd
);
3319 port_query_by_name(const struct ofproto
*ofproto_
, const char *devname
,
3320 struct ofproto_port
*ofproto_port
)
3322 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3323 struct dpif_port dpif_port
;
3326 if (sset_contains(&ofproto
->ghost_ports
, devname
)) {
3327 const char *type
= netdev_get_type_from_name(devname
);
3329 /* We may be called before ofproto->up.port_by_name is populated with
3330 * the appropriate ofport. For this reason, we must get the name and
3331 * type from the netdev layer directly. */
3333 const struct ofport
*ofport
;
3335 ofport
= shash_find_data(&ofproto
->up
.port_by_name
, devname
);
3336 ofproto_port
->ofp_port
= ofport
? ofport
->ofp_port
: OFPP_NONE
;
3337 ofproto_port
->name
= xstrdup(devname
);
3338 ofproto_port
->type
= xstrdup(type
);
3344 if (!sset_contains(&ofproto
->ports
, devname
)) {
3347 error
= dpif_port_query_by_name(ofproto
->backer
->dpif
,
3348 devname
, &dpif_port
);
3350 ofproto_port_from_dpif_port(ofproto
, ofproto_port
, &dpif_port
);
3356 port_add(struct ofproto
*ofproto_
, struct netdev
*netdev
)
3358 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3359 const char *devname
= netdev_get_name(netdev
);
3360 char namebuf
[NETDEV_VPORT_NAME_BUFSIZE
];
3361 const char *dp_port_name
;
3363 if (netdev_vport_is_patch(netdev
)) {
3364 sset_add(&ofproto
->ghost_ports
, netdev_get_name(netdev
));
3368 dp_port_name
= netdev_vport_get_dpif_port(netdev
, namebuf
, sizeof namebuf
);
3369 if (!dpif_port_exists(ofproto
->backer
->dpif
, dp_port_name
)) {
3370 uint32_t port_no
= UINT32_MAX
;
3373 error
= dpif_port_add(ofproto
->backer
->dpif
, netdev
, &port_no
);
3377 if (netdev_get_tunnel_config(netdev
)) {
3378 simap_put(&ofproto
->backer
->tnl_backers
, dp_port_name
, port_no
);
3382 if (netdev_get_tunnel_config(netdev
)) {
3383 sset_add(&ofproto
->ghost_ports
, devname
);
3385 sset_add(&ofproto
->ports
, devname
);
3391 port_del(struct ofproto
*ofproto_
, uint16_t ofp_port
)
3393 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3394 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
3401 sset_find_and_delete(&ofproto
->ghost_ports
,
3402 netdev_get_name(ofport
->up
.netdev
));
3403 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
3404 if (!ofport
->tnl_port
) {
3405 error
= dpif_port_del(ofproto
->backer
->dpif
, ofport
->odp_port
);
3407 /* The caller is going to close ofport->up.netdev. If this is a
3408 * bonded port, then the bond is using that netdev, so remove it
3409 * from the bond. The client will need to reconfigure everything
3410 * after deleting ports, so then the slave will get re-added. */
3411 bundle_remove(&ofport
->up
);
3418 port_get_stats(const struct ofport
*ofport_
, struct netdev_stats
*stats
)
3420 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
3425 error
= netdev_get_stats(ofport
->up
.netdev
, stats
);
3427 if (!error
&& ofport_
->ofp_port
== OFPP_LOCAL
) {
3428 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
3430 /* ofproto->stats.tx_packets represents packets that we created
3431 * internally and sent to some port (e.g. packets sent with
3432 * send_packet()). Account for them as if they had come from
3433 * OFPP_LOCAL and got forwarded. */
3435 if (stats
->rx_packets
!= UINT64_MAX
) {
3436 stats
->rx_packets
+= ofproto
->stats
.tx_packets
;
3439 if (stats
->rx_bytes
!= UINT64_MAX
) {
3440 stats
->rx_bytes
+= ofproto
->stats
.tx_bytes
;
3443 /* ofproto->stats.rx_packets represents packets that were received on
3444 * some port and we processed internally and dropped (e.g. STP).
3445 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3447 if (stats
->tx_packets
!= UINT64_MAX
) {
3448 stats
->tx_packets
+= ofproto
->stats
.rx_packets
;
3451 if (stats
->tx_bytes
!= UINT64_MAX
) {
3452 stats
->tx_bytes
+= ofproto
->stats
.rx_bytes
;
3459 struct port_dump_state
{
3464 struct ofproto_port port
;
3469 port_dump_start(const struct ofproto
*ofproto_ OVS_UNUSED
, void **statep
)
3471 *statep
= xzalloc(sizeof(struct port_dump_state
));
3476 port_dump_next(const struct ofproto
*ofproto_
, void *state_
,
3477 struct ofproto_port
*port
)
3479 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3480 struct port_dump_state
*state
= state_
;
3481 const struct sset
*sset
;
3482 struct sset_node
*node
;
3484 if (state
->has_port
) {
3485 ofproto_port_destroy(&state
->port
);
3486 state
->has_port
= false;
3488 sset
= state
->ghost
? &ofproto
->ghost_ports
: &ofproto
->ports
;
3489 while ((node
= sset_at_position(sset
, &state
->bucket
, &state
->offset
))) {
3492 error
= port_query_by_name(ofproto_
, node
->name
, &state
->port
);
3494 *port
= state
->port
;
3495 state
->has_port
= true;
3497 } else if (error
!= ENODEV
) {
3502 if (!state
->ghost
) {
3503 state
->ghost
= true;
3506 return port_dump_next(ofproto_
, state_
, port
);
3513 port_dump_done(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
)
3515 struct port_dump_state
*state
= state_
;
3517 if (state
->has_port
) {
3518 ofproto_port_destroy(&state
->port
);
3525 port_poll(const struct ofproto
*ofproto_
, char **devnamep
)
3527 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3529 if (ofproto
->port_poll_errno
) {
3530 int error
= ofproto
->port_poll_errno
;
3531 ofproto
->port_poll_errno
= 0;
3535 if (sset_is_empty(&ofproto
->port_poll_set
)) {
3539 *devnamep
= sset_pop(&ofproto
->port_poll_set
);
3544 port_poll_wait(const struct ofproto
*ofproto_
)
3546 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
3547 dpif_port_poll_wait(ofproto
->backer
->dpif
);
3551 port_is_lacp_current(const struct ofport
*ofport_
)
3553 const struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
3554 return (ofport
->bundle
&& ofport
->bundle
->lacp
3555 ? lacp_slave_is_current(ofport
->bundle
->lacp
, ofport
)
3559 /* Upcall handling. */
3561 /* Flow miss batching.
3563 * Some dpifs implement operations faster when you hand them off in a batch.
3564 * To allow batching, "struct flow_miss" queues the dpif-related work needed
3565 * for a given flow. Each "struct flow_miss" corresponds to sending one or
3566 * more packets, plus possibly installing the flow in the dpif.
3568 * So far we only batch the operations that affect flow setup time the most.
3569 * It's possible to batch more than that, but the benefit might be minimal. */
3571 struct hmap_node hmap_node
;
3572 struct ofproto_dpif
*ofproto
;
3574 enum odp_key_fitness key_fitness
;
3575 const struct nlattr
*key
;
3577 struct initial_vals initial_vals
;
3578 struct list packets
;
3579 enum dpif_upcall_type upcall_type
;
3582 struct flow_miss_op
{
3583 struct dpif_op dpif_op
;
3585 uint64_t slow_stub
[128 / 8]; /* Buffer for compose_slow_path() */
3586 struct xlate_out xout
;
3587 bool xout_garbage
; /* 'xout' needs to be uninitialized? */
3590 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
3591 * OpenFlow controller as necessary according to their individual
3592 * configurations. */
3594 send_packet_in_miss(struct ofproto_dpif
*ofproto
, const struct ofpbuf
*packet
,
3595 const struct flow
*flow
)
3597 struct ofputil_packet_in pin
;
3599 pin
.packet
= packet
->data
;
3600 pin
.packet_len
= packet
->size
;
3601 pin
.reason
= OFPR_NO_MATCH
;
3602 pin
.controller_id
= 0;
3607 pin
.send_len
= 0; /* not used for flow table misses */
3609 flow_get_metadata(flow
, &pin
.fmd
);
3611 connmgr_send_packet_in(ofproto
->up
.connmgr
, &pin
);
3614 static enum slow_path_reason
3615 process_special(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
3616 const struct ofport_dpif
*ofport
, const struct ofpbuf
*packet
)
3620 } else if (ofport
->cfm
&& cfm_should_process_flow(ofport
->cfm
, flow
)) {
3622 cfm_process_heartbeat(ofport
->cfm
, packet
);
3625 } else if (ofport
->bfd
&& bfd_should_process_flow(flow
)) {
3627 bfd_process_packet(ofport
->bfd
, flow
, packet
);
3630 } else if (ofport
->bundle
&& ofport
->bundle
->lacp
3631 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
3633 lacp_process_packet(ofport
->bundle
->lacp
, ofport
, packet
);
3636 } else if (ofproto
->stp
&& stp_should_process_flow(flow
)) {
3638 stp_process_packet(ofport
, packet
);
3646 static struct flow_miss
*
3647 flow_miss_find(struct hmap
*todo
, const struct ofproto_dpif
*ofproto
,
3648 const struct flow
*flow
, uint32_t hash
)
3650 struct flow_miss
*miss
;
3652 HMAP_FOR_EACH_WITH_HASH (miss
, hmap_node
, hash
, todo
) {
3653 if (miss
->ofproto
== ofproto
&& flow_equal(&miss
->flow
, flow
)) {
3661 /* Partially Initializes 'op' as an "execute" operation for 'miss' and
3662 * 'packet'. The caller must initialize op->actions and op->actions_len. If
3663 * 'miss' is associated with a subfacet the caller must also initialize the
3664 * returned op->subfacet, and if anything needs to be freed after processing
3665 * the op, the caller must initialize op->garbage also. */
3667 init_flow_miss_execute_op(struct flow_miss
*miss
, struct ofpbuf
*packet
,
3668 struct flow_miss_op
*op
)
3670 if (miss
->flow
.vlan_tci
!= miss
->initial_vals
.vlan_tci
) {
3671 /* This packet was received on a VLAN splinter port. We
3672 * added a VLAN to the packet to make the packet resemble
3673 * the flow, but the actions were composed assuming that
3674 * the packet contained no VLAN. So, we must remove the
3675 * VLAN header from the packet before trying to execute the
3677 eth_pop_vlan(packet
);
3680 op
->xout_garbage
= false;
3681 op
->dpif_op
.type
= DPIF_OP_EXECUTE
;
3682 op
->dpif_op
.u
.execute
.key
= miss
->key
;
3683 op
->dpif_op
.u
.execute
.key_len
= miss
->key_len
;
3684 op
->dpif_op
.u
.execute
.packet
= packet
;
3687 /* Helper for handle_flow_miss_without_facet() and
3688 * handle_flow_miss_with_facet(). */
3690 handle_flow_miss_common(struct rule_dpif
*rule
,
3691 struct ofpbuf
*packet
, const struct flow
*flow
)
3693 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3695 if (rule
->up
.cr
.priority
== FAIL_OPEN_PRIORITY
) {
3697 * Extra-special case for fail-open mode.
3699 * We are in fail-open mode and the packet matched the fail-open
3700 * rule, but we are connected to a controller too. We should send
3701 * the packet up to the controller in the hope that it will try to
3702 * set up a flow and thereby allow us to exit fail-open.
3704 * See the top-level comment in fail-open.c for more information.
3706 send_packet_in_miss(ofproto
, packet
, flow
);
3710 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3711 * 'miss' masked by 'wc', is likely to be worth tracking in detail in userspace
3712 * and (usually) installing a datapath flow. The answer is usually "yes" (a
3713 * return value of true). However, for short flows the cost of bookkeeping is
3714 * much higher than the benefits, so when the datapath holds a large number of
3715 * flows we impose some heuristics to decide which flows are likely to be worth
3718 flow_miss_should_make_facet(struct flow_miss
*miss
, struct flow_wildcards
*wc
)
3720 struct dpif_backer
*backer
= miss
->ofproto
->backer
;
3723 if (!backer
->governor
) {
3726 n_subfacets
= hmap_count(&backer
->subfacets
);
3727 if (n_subfacets
* 2 <= flow_eviction_threshold
) {
3731 backer
->governor
= governor_create();
3734 hash
= flow_hash_in_wildcards(&miss
->flow
, wc
, 0);
3735 return governor_should_install_flow(backer
->governor
, hash
,
3736 list_size(&miss
->packets
));
3739 /* Handles 'miss' without creating a facet or subfacet or creating any datapath
3740 * flow. 'miss->flow' must have matched 'rule' and been xlated into 'xout'.
3741 * May add an "execute" operation to 'ops' and increment '*n_ops'. */
3743 handle_flow_miss_without_facet(struct rule_dpif
*rule
, struct xlate_out
*xout
,
3744 struct flow_miss
*miss
,
3745 struct flow_miss_op
*ops
, size_t *n_ops
)
3747 struct ofpbuf
*packet
;
3749 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3751 COVERAGE_INC(facet_suppress
);
3753 handle_flow_miss_common(rule
, packet
, &miss
->flow
);
3756 struct xlate_in xin
;
3758 xlate_in_init(&xin
, miss
->ofproto
, &miss
->flow
,
3759 &miss
->initial_vals
, rule
, 0, packet
);
3760 xlate_actions_for_side_effects(&xin
);
3763 if (xout
->odp_actions
.size
) {
3764 struct flow_miss_op
*op
= &ops
[*n_ops
];
3765 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3767 init_flow_miss_execute_op(miss
, packet
, op
);
3768 xlate_out_copy(&op
->xout
, xout
);
3769 execute
->actions
= op
->xout
.odp_actions
.data
;
3770 execute
->actions_len
= op
->xout
.odp_actions
.size
;
3771 op
->xout_garbage
= true;
3778 /* Handles 'miss', which matches 'facet'. May add any required datapath
3779 * operations to 'ops', incrementing '*n_ops' for each new op.
3781 * All of the packets in 'miss' are considered to have arrived at time 'now'.
3782 * This is really important only for new facets: if we just called time_msec()
3783 * here, then the new subfacet or its packets could look (occasionally) as
3784 * though it was used some time after the facet was used. That can make a
3785 * one-packet flow look like it has a nonzero duration, which looks odd in
3786 * e.g. NetFlow statistics.
3788 * If non-null, 'stats' will be folded into 'facet'. */
3790 handle_flow_miss_with_facet(struct flow_miss
*miss
, struct facet
*facet
,
3791 long long int now
, struct dpif_flow_stats
*stats
,
3792 struct flow_miss_op
*ops
, size_t *n_ops
)
3794 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3795 enum subfacet_path want_path
;
3796 struct subfacet
*subfacet
;
3797 struct ofpbuf
*packet
;
3799 subfacet
= subfacet_create(facet
, miss
, now
);
3800 want_path
= facet
->xout
.slow
? SF_SLOW_PATH
: SF_FAST_PATH
;
3802 subfacet_update_stats(subfacet
, stats
);
3805 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3806 struct flow_miss_op
*op
= &ops
[*n_ops
];
3808 handle_flow_miss_common(facet
->rule
, packet
, &miss
->flow
);
3810 if (want_path
!= SF_FAST_PATH
) {
3811 struct xlate_in xin
;
3813 xlate_in_init(&xin
, ofproto
, &facet
->flow
, &facet
->initial_vals
,
3814 facet
->rule
, 0, packet
);
3815 xlate_actions_for_side_effects(&xin
);
3818 if (facet
->xout
.odp_actions
.size
) {
3819 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
3821 init_flow_miss_execute_op(miss
, packet
, op
);
3822 execute
->actions
= facet
->xout
.odp_actions
.data
,
3823 execute
->actions_len
= facet
->xout
.odp_actions
.size
;
3828 if (miss
->upcall_type
== DPIF_UC_MISS
|| subfacet
->path
!= want_path
) {
3829 struct flow_miss_op
*op
= &ops
[(*n_ops
)++];
3830 struct dpif_flow_put
*put
= &op
->dpif_op
.u
.flow_put
;
3832 subfacet
->path
= want_path
;
3834 op
->xout_garbage
= false;
3835 op
->dpif_op
.type
= DPIF_OP_FLOW_PUT
;
3836 put
->flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
3837 put
->key
= miss
->key
;
3838 put
->key_len
= miss
->key_len
;
3839 if (want_path
== SF_FAST_PATH
) {
3840 put
->actions
= facet
->xout
.odp_actions
.data
;
3841 put
->actions_len
= facet
->xout
.odp_actions
.size
;
3843 compose_slow_path(ofproto
, &facet
->flow
, facet
->xout
.slow
,
3844 op
->slow_stub
, sizeof op
->slow_stub
,
3845 &put
->actions
, &put
->actions_len
);
3851 /* Handles flow miss 'miss'. May add any required datapath operations
3852 * to 'ops', incrementing '*n_ops' for each new op. */
3854 handle_flow_miss(struct flow_miss
*miss
, struct flow_miss_op
*ops
,
3857 struct ofproto_dpif
*ofproto
= miss
->ofproto
;
3858 struct dpif_flow_stats stats__
;
3859 struct dpif_flow_stats
*stats
= &stats__
;
3860 struct ofpbuf
*packet
;
3861 struct facet
*facet
;
3865 memset(stats
, 0, sizeof *stats
);
3867 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
3868 stats
->tcp_flags
|= packet_get_tcp_flags(packet
, &miss
->flow
);
3869 stats
->n_bytes
+= packet
->size
;
3873 facet
= facet_lookup_valid(ofproto
, &miss
->flow
);
3875 struct flow_wildcards wc
;
3876 struct rule_dpif
*rule
;
3877 struct xlate_out xout
;
3878 struct xlate_in xin
;
3880 flow_wildcards_init_catchall(&wc
);
3881 rule
= rule_dpif_lookup(ofproto
, &miss
->flow
, &wc
);
3882 rule_credit_stats(rule
, stats
);
3884 xlate_in_init(&xin
, ofproto
, &miss
->flow
, &miss
->initial_vals
, rule
,
3885 stats
->tcp_flags
, NULL
);
3886 xin
.resubmit_stats
= stats
;
3887 xin
.may_learn
= true;
3888 xlate_actions(&xin
, &xout
);
3889 flow_wildcards_or(&xout
.wc
, &xout
.wc
, &wc
);
3891 /* There does not exist a bijection between 'struct flow' and datapath
3892 * flow keys with fitness ODP_FIT_TO_LITTLE. This breaks a fundamental
3893 * assumption used throughout the facet and subfacet handling code.
3894 * Since we have to handle these misses in userspace anyway, we simply
3895 * skip facet creation, avoiding the problem altogether. */
3896 if (miss
->key_fitness
== ODP_FIT_TOO_LITTLE
3897 || !flow_miss_should_make_facet(miss
, &xout
.wc
)) {
3898 handle_flow_miss_without_facet(rule
, &xout
, miss
, ops
, n_ops
);
3902 facet
= facet_create(miss
, rule
, &xout
, stats
);
3905 handle_flow_miss_with_facet(miss
, facet
, now
, stats
, ops
, n_ops
);
3908 static struct drop_key
*
3909 drop_key_lookup(const struct dpif_backer
*backer
, const struct nlattr
*key
,
3912 struct drop_key
*drop_key
;
3914 HMAP_FOR_EACH_WITH_HASH (drop_key
, hmap_node
, hash_bytes(key
, key_len
, 0),
3915 &backer
->drop_keys
) {
3916 if (drop_key
->key_len
== key_len
3917 && !memcmp(drop_key
->key
, key
, key_len
)) {
3925 drop_key_clear(struct dpif_backer
*backer
)
3927 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
3928 struct drop_key
*drop_key
, *next
;
3930 HMAP_FOR_EACH_SAFE (drop_key
, next
, hmap_node
, &backer
->drop_keys
) {
3933 error
= dpif_flow_del(backer
->dpif
, drop_key
->key
, drop_key
->key_len
,
3935 if (error
&& !VLOG_DROP_WARN(&rl
)) {
3936 struct ds ds
= DS_EMPTY_INITIALIZER
;
3937 odp_flow_key_format(drop_key
->key
, drop_key
->key_len
, &ds
);
3938 VLOG_WARN("Failed to delete drop key (%s) (%s)", strerror(error
),
3943 hmap_remove(&backer
->drop_keys
, &drop_key
->hmap_node
);
3944 free(drop_key
->key
);
3949 /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
3950 * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
3951 * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as
3952 * returned by odp_flow_key_to_flow(). Also, optionally populates 'ofproto'
3953 * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that
3954 * 'packet' ingressed.
3956 * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
3957 * 'flow''s in_port to OFPP_NONE.
3959 * This function does post-processing on data returned from
3960 * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
3961 * of the upcall processing logic. In particular, if the extracted in_port is
3962 * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
3963 * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
3964 * a VLAN header onto 'packet' (if it is nonnull).
3966 * Optionally, if 'initial_vals' is nonnull, sets 'initial_vals->vlan_tci'
3967 * to the VLAN TCI with which the packet was really received, that is, the
3968 * actual VLAN TCI extracted by odp_flow_key_to_flow(). (This differs from
3969 * the value returned in flow->vlan_tci only for packets received on
3972 * Similarly, this function also includes some logic to help with tunnels. It
3973 * may modify 'flow' as necessary to make the tunneling implementation
3974 * transparent to the upcall processing logic.
3976 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
3977 * or some other positive errno if there are other problems. */
3979 ofproto_receive(const struct dpif_backer
*backer
, struct ofpbuf
*packet
,
3980 const struct nlattr
*key
, size_t key_len
,
3981 struct flow
*flow
, enum odp_key_fitness
*fitnessp
,
3982 struct ofproto_dpif
**ofproto
, uint32_t *odp_in_port
,
3983 struct initial_vals
*initial_vals
)
3985 const struct ofport_dpif
*port
;
3986 enum odp_key_fitness fitness
;
3989 fitness
= odp_flow_key_to_flow(key
, key_len
, flow
);
3990 if (fitness
== ODP_FIT_ERROR
) {
3996 initial_vals
->vlan_tci
= flow
->vlan_tci
;
4000 *odp_in_port
= flow
->in_port
;
4003 port
= (tnl_port_should_receive(flow
)
4004 ? ofport_dpif_cast(tnl_port_receive(flow
))
4005 : odp_port_to_ofport(backer
, flow
->in_port
));
4006 flow
->in_port
= port
? port
->up
.ofp_port
: OFPP_NONE
;
4011 /* XXX: Since the tunnel module is not scoped per backer, for a tunnel port
4012 * it's theoretically possible that we'll receive an ofport belonging to an
4013 * entirely different datapath. In practice, this can't happen because no
4014 * platforms has two separate datapaths which each support tunneling. */
4015 ovs_assert(ofproto_dpif_cast(port
->up
.ofproto
)->backer
== backer
);
4017 if (vsp_adjust_flow(ofproto_dpif_cast(port
->up
.ofproto
), flow
)) {
4019 /* Make the packet resemble the flow, so that it gets sent to
4020 * an OpenFlow controller properly, so that it looks correct
4021 * for sFlow, and so that flow_extract() will get the correct
4022 * vlan_tci if it is called on 'packet'.
4024 * The allocated space inside 'packet' probably also contains
4025 * 'key', that is, both 'packet' and 'key' are probably part of
4026 * a struct dpif_upcall (see the large comment on that
4027 * structure definition), so pushing data on 'packet' is in
4028 * general not a good idea since it could overwrite 'key' or
4029 * free it as a side effect. However, it's OK in this special
4030 * case because we know that 'packet' is inside a Netlink
4031 * attribute: pushing 4 bytes will just overwrite the 4-byte
4032 * "struct nlattr", which is fine since we don't need that
4033 * header anymore. */
4034 eth_push_vlan(packet
, flow
->vlan_tci
);
4036 /* We can't reproduce 'key' from 'flow'. */
4037 fitness
= fitness
== ODP_FIT_PERFECT
? ODP_FIT_TOO_MUCH
: fitness
;
4042 *ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
4047 *fitnessp
= fitness
;
4053 handle_miss_upcalls(struct dpif_backer
*backer
, struct dpif_upcall
*upcalls
,
4056 struct dpif_upcall
*upcall
;
4057 struct flow_miss
*miss
;
4058 struct flow_miss misses
[FLOW_MISS_MAX_BATCH
];
4059 struct flow_miss_op flow_miss_ops
[FLOW_MISS_MAX_BATCH
* 2];
4060 struct dpif_op
*dpif_ops
[FLOW_MISS_MAX_BATCH
* 2];
4070 /* Construct the to-do list.
4072 * This just amounts to extracting the flow from each packet and sticking
4073 * the packets that have the same flow in the same "flow_miss" structure so
4074 * that we can process them together. */
4077 for (upcall
= upcalls
; upcall
< &upcalls
[n_upcalls
]; upcall
++) {
4078 struct flow_miss
*miss
= &misses
[n_misses
];
4079 struct flow_miss
*existing_miss
;
4080 struct ofproto_dpif
*ofproto
;
4081 uint32_t odp_in_port
;
4086 error
= ofproto_receive(backer
, upcall
->packet
, upcall
->key
,
4087 upcall
->key_len
, &flow
, &miss
->key_fitness
,
4088 &ofproto
, &odp_in_port
, &miss
->initial_vals
);
4089 if (error
== ENODEV
) {
4090 struct drop_key
*drop_key
;
4092 /* Received packet on datapath port for which we couldn't
4093 * associate an ofproto. This can happen if a port is removed
4094 * while traffic is being received. Print a rate-limited message
4095 * in case it happens frequently. Install a drop flow so
4096 * that future packets of the flow are inexpensively dropped
4098 VLOG_INFO_RL(&rl
, "received packet on unassociated datapath port "
4099 "%"PRIu32
, odp_in_port
);
4101 drop_key
= drop_key_lookup(backer
, upcall
->key
, upcall
->key_len
);
4103 drop_key
= xmalloc(sizeof *drop_key
);
4104 drop_key
->key
= xmemdup(upcall
->key
, upcall
->key_len
);
4105 drop_key
->key_len
= upcall
->key_len
;
4107 hmap_insert(&backer
->drop_keys
, &drop_key
->hmap_node
,
4108 hash_bytes(drop_key
->key
, drop_key
->key_len
, 0));
4109 dpif_flow_put(backer
->dpif
, DPIF_FP_CREATE
| DPIF_FP_MODIFY
,
4110 drop_key
->key
, drop_key
->key_len
, NULL
, 0, NULL
);
4118 ofproto
->n_missed
++;
4119 flow_extract(upcall
->packet
, flow
.skb_priority
, flow
.skb_mark
,
4120 &flow
.tunnel
, flow
.in_port
, &miss
->flow
);
4122 /* Add other packets to a to-do list. */
4123 hash
= flow_hash(&miss
->flow
, 0);
4124 existing_miss
= flow_miss_find(&todo
, ofproto
, &miss
->flow
, hash
);
4125 if (!existing_miss
) {
4126 hmap_insert(&todo
, &miss
->hmap_node
, hash
);
4127 miss
->ofproto
= ofproto
;
4128 miss
->key
= upcall
->key
;
4129 miss
->key_len
= upcall
->key_len
;
4130 miss
->upcall_type
= upcall
->type
;
4131 list_init(&miss
->packets
);
4135 miss
= existing_miss
;
4137 list_push_back(&miss
->packets
, &upcall
->packet
->list_node
);
4140 /* Process each element in the to-do list, constructing the set of
4141 * operations to batch. */
4143 HMAP_FOR_EACH (miss
, hmap_node
, &todo
) {
4144 handle_flow_miss(miss
, flow_miss_ops
, &n_ops
);
4146 ovs_assert(n_ops
<= ARRAY_SIZE(flow_miss_ops
));
4148 /* Execute batch. */
4149 for (i
= 0; i
< n_ops
; i
++) {
4150 dpif_ops
[i
] = &flow_miss_ops
[i
].dpif_op
;
4152 dpif_operate(backer
->dpif
, dpif_ops
, n_ops
);
4155 for (i
= 0; i
< n_ops
; i
++) {
4156 if (flow_miss_ops
[i
].xout_garbage
) {
4157 xlate_out_uninit(&flow_miss_ops
[i
].xout
);
4160 hmap_destroy(&todo
);
4163 static enum { SFLOW_UPCALL
, MISS_UPCALL
, BAD_UPCALL
, FLOW_SAMPLE_UPCALL
,
4165 classify_upcall(const struct dpif_upcall
*upcall
)
4167 size_t userdata_len
;
4168 union user_action_cookie cookie
;
4170 /* First look at the upcall type. */
4171 switch (upcall
->type
) {
4172 case DPIF_UC_ACTION
:
4178 case DPIF_N_UC_TYPES
:
4180 VLOG_WARN_RL(&rl
, "upcall has unexpected type %"PRIu32
, upcall
->type
);
4184 /* "action" upcalls need a closer look. */
4185 if (!upcall
->userdata
) {
4186 VLOG_WARN_RL(&rl
, "action upcall missing cookie");
4189 userdata_len
= nl_attr_get_size(upcall
->userdata
);
4190 if (userdata_len
< sizeof cookie
.type
4191 || userdata_len
> sizeof cookie
) {
4192 VLOG_WARN_RL(&rl
, "action upcall cookie has unexpected size %zu",
4196 memset(&cookie
, 0, sizeof cookie
);
4197 memcpy(&cookie
, nl_attr_get(upcall
->userdata
), userdata_len
);
4198 if (userdata_len
== sizeof cookie
.sflow
4199 && cookie
.type
== USER_ACTION_COOKIE_SFLOW
) {
4200 return SFLOW_UPCALL
;
4201 } else if (userdata_len
== sizeof cookie
.slow_path
4202 && cookie
.type
== USER_ACTION_COOKIE_SLOW_PATH
) {
4204 } else if (userdata_len
== sizeof cookie
.flow_sample
4205 && cookie
.type
== USER_ACTION_COOKIE_FLOW_SAMPLE
) {
4206 return FLOW_SAMPLE_UPCALL
;
4207 } else if (userdata_len
== sizeof cookie
.ipfix
4208 && cookie
.type
== USER_ACTION_COOKIE_IPFIX
) {
4209 return IPFIX_UPCALL
;
4211 VLOG_WARN_RL(&rl
, "invalid user cookie of type %"PRIu16
4212 " and size %zu", cookie
.type
, userdata_len
);
4218 handle_sflow_upcall(struct dpif_backer
*backer
,
4219 const struct dpif_upcall
*upcall
)
4221 struct ofproto_dpif
*ofproto
;
4222 union user_action_cookie cookie
;
4224 uint32_t odp_in_port
;
4226 if (ofproto_receive(backer
, upcall
->packet
, upcall
->key
, upcall
->key_len
,
4227 &flow
, NULL
, &ofproto
, &odp_in_port
, NULL
)
4228 || !ofproto
->sflow
) {
4232 memset(&cookie
, 0, sizeof cookie
);
4233 memcpy(&cookie
, nl_attr_get(upcall
->userdata
), sizeof cookie
.sflow
);
4234 dpif_sflow_received(ofproto
->sflow
, upcall
->packet
, &flow
,
4235 odp_in_port
, &cookie
);
4239 handle_flow_sample_upcall(struct dpif_backer
*backer
,
4240 const struct dpif_upcall
*upcall
)
4242 struct ofproto_dpif
*ofproto
;
4243 union user_action_cookie cookie
;
4246 if (ofproto_receive(backer
, upcall
->packet
, upcall
->key
, upcall
->key_len
,
4247 &flow
, NULL
, &ofproto
, NULL
, NULL
)
4248 || !ofproto
->ipfix
) {
4252 memset(&cookie
, 0, sizeof cookie
);
4253 memcpy(&cookie
, nl_attr_get(upcall
->userdata
), sizeof cookie
.flow_sample
);
4255 /* The flow reflects exactly the contents of the packet. Sample
4256 * the packet using it. */
4257 dpif_ipfix_flow_sample(ofproto
->ipfix
, upcall
->packet
, &flow
,
4258 cookie
.flow_sample
.collector_set_id
,
4259 cookie
.flow_sample
.probability
,
4260 cookie
.flow_sample
.obs_domain_id
,
4261 cookie
.flow_sample
.obs_point_id
);
4265 handle_ipfix_upcall(struct dpif_backer
*backer
,
4266 const struct dpif_upcall
*upcall
)
4268 struct ofproto_dpif
*ofproto
;
4271 if (ofproto_receive(backer
, upcall
->packet
, upcall
->key
, upcall
->key_len
,
4272 &flow
, NULL
, &ofproto
, NULL
, NULL
)
4273 || !ofproto
->ipfix
) {
4277 /* The flow reflects exactly the contents of the packet. Sample
4278 * the packet using it. */
4279 dpif_ipfix_bridge_sample(ofproto
->ipfix
, upcall
->packet
, &flow
);
4283 handle_upcalls(struct dpif_backer
*backer
, unsigned int max_batch
)
4285 struct dpif_upcall misses
[FLOW_MISS_MAX_BATCH
];
4286 struct ofpbuf miss_bufs
[FLOW_MISS_MAX_BATCH
];
4287 uint64_t miss_buf_stubs
[FLOW_MISS_MAX_BATCH
][4096 / 8];
4292 ovs_assert(max_batch
<= FLOW_MISS_MAX_BATCH
);
4295 for (n_processed
= 0; n_processed
< max_batch
; n_processed
++) {
4296 struct dpif_upcall
*upcall
= &misses
[n_misses
];
4297 struct ofpbuf
*buf
= &miss_bufs
[n_misses
];
4300 ofpbuf_use_stub(buf
, miss_buf_stubs
[n_misses
],
4301 sizeof miss_buf_stubs
[n_misses
]);
4302 error
= dpif_recv(backer
->dpif
, upcall
, buf
);
4308 switch (classify_upcall(upcall
)) {
4310 /* Handle it later. */
4315 handle_sflow_upcall(backer
, upcall
);
4319 case FLOW_SAMPLE_UPCALL
:
4320 handle_flow_sample_upcall(backer
, upcall
);
4325 handle_ipfix_upcall(backer
, upcall
);
4335 /* Handle deferred MISS_UPCALL processing. */
4336 handle_miss_upcalls(backer
, misses
, n_misses
);
4337 for (i
= 0; i
< n_misses
; i
++) {
4338 ofpbuf_uninit(&miss_bufs
[i
]);
4344 /* Flow expiration. */
4346 static int subfacet_max_idle(const struct dpif_backer
*);
4347 static void update_stats(struct dpif_backer
*);
4348 static void rule_expire(struct rule_dpif
*);
4349 static void expire_subfacets(struct dpif_backer
*, int dp_max_idle
);
4351 /* This function is called periodically by run(). Its job is to collect
4352 * updates for the flows that have been installed into the datapath, most
4353 * importantly when they last were used, and then use that information to
4354 * expire flows that have not been used recently.
4356 * Returns the number of milliseconds after which it should be called again. */
4358 expire(struct dpif_backer
*backer
)
4360 struct ofproto_dpif
*ofproto
;
4364 /* Periodically clear out the drop keys in an effort to keep them
4365 * relatively few. */
4366 drop_key_clear(backer
);
4368 /* Update stats for each flow in the backer. */
4369 update_stats(backer
);
4371 n_subfacets
= hmap_count(&backer
->subfacets
);
4373 struct subfacet
*subfacet
;
4374 long long int total
, now
;
4378 HMAP_FOR_EACH (subfacet
, hmap_node
, &backer
->subfacets
) {
4379 total
+= now
- subfacet
->created
;
4381 backer
->avg_subfacet_life
+= total
/ n_subfacets
;
4383 backer
->avg_subfacet_life
/= 2;
4385 backer
->avg_n_subfacet
+= n_subfacets
;
4386 backer
->avg_n_subfacet
/= 2;
4388 backer
->max_n_subfacet
= MAX(backer
->max_n_subfacet
, n_subfacets
);
4390 max_idle
= subfacet_max_idle(backer
);
4391 expire_subfacets(backer
, max_idle
);
4393 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
4394 struct rule
*rule
, *next_rule
;
4396 if (ofproto
->backer
!= backer
) {
4400 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
4402 LIST_FOR_EACH_SAFE (rule
, next_rule
, expirable
,
4403 &ofproto
->up
.expirable
) {
4404 rule_expire(rule_dpif_cast(rule
));
4407 /* All outstanding data in existing flows has been accounted, so it's a
4408 * good time to do bond rebalancing. */
4409 if (ofproto
->has_bonded_bundles
) {
4410 struct ofbundle
*bundle
;
4412 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
4414 bond_rebalance(bundle
->bond
, &backer
->revalidate_set
);
4420 return MIN(max_idle
, 1000);
4423 /* Updates flow table statistics given that the datapath just reported 'stats'
4424 * as 'subfacet''s statistics. */
4426 update_subfacet_stats(struct subfacet
*subfacet
,
4427 const struct dpif_flow_stats
*stats
)
4429 struct facet
*facet
= subfacet
->facet
;
4430 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4431 struct dpif_flow_stats diff
;
4433 diff
.tcp_flags
= stats
->tcp_flags
;
4434 diff
.used
= stats
->used
;
4436 if (stats
->n_packets
>= subfacet
->dp_packet_count
) {
4437 diff
.n_packets
= stats
->n_packets
- subfacet
->dp_packet_count
;
4439 VLOG_WARN_RL(&rl
, "unexpected packet count from the datapath");
4443 if (stats
->n_bytes
>= subfacet
->dp_byte_count
) {
4444 diff
.n_bytes
= stats
->n_bytes
- subfacet
->dp_byte_count
;
4446 VLOG_WARN_RL(&rl
, "unexpected byte count from datapath");
4450 ofproto
->n_hit
+= diff
.n_packets
;
4451 subfacet
->dp_packet_count
= stats
->n_packets
;
4452 subfacet
->dp_byte_count
= stats
->n_bytes
;
4453 subfacet_update_stats(subfacet
, &diff
);
4455 if (facet
->accounted_bytes
< facet
->byte_count
) {
4457 facet_account(facet
);
4458 facet
->accounted_bytes
= facet
->byte_count
;
4462 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
4463 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
4465 delete_unexpected_flow(struct dpif_backer
*backer
,
4466 const struct nlattr
*key
, size_t key_len
)
4468 if (!VLOG_DROP_WARN(&rl
)) {
4472 odp_flow_key_format(key
, key_len
, &s
);
4473 VLOG_WARN("unexpected flow: %s", ds_cstr(&s
));
4477 COVERAGE_INC(facet_unexpected
);
4478 dpif_flow_del(backer
->dpif
, key
, key_len
, NULL
);
4481 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
4483 * This function also pushes statistics updates to rules which each facet
4484 * resubmits into. Generally these statistics will be accurate. However, if a
4485 * facet changes the rule it resubmits into at some time in between
4486 * update_stats() runs, it is possible that statistics accrued to the
4487 * old rule will be incorrectly attributed to the new rule. This could be
4488 * avoided by calling update_stats() whenever rules are created or
4489 * deleted. However, the performance impact of making so many calls to the
4490 * datapath do not justify the benefit of having perfectly accurate statistics.
4492 * In addition, this function maintains per ofproto flow hit counts. The patch
4493 * port is not treated specially. e.g. A packet ingress from br0 patched into
4494 * br1 will increase the hit count of br0 by 1, however, does not affect
4495 * the hit or miss counts of br1.
4498 update_stats(struct dpif_backer
*backer
)
4500 const struct dpif_flow_stats
*stats
;
4501 struct dpif_flow_dump dump
;
4502 const struct nlattr
*key
;
4505 dpif_flow_dump_start(&dump
, backer
->dpif
);
4506 while (dpif_flow_dump_next(&dump
, &key
, &key_len
, NULL
, NULL
, &stats
)) {
4507 struct subfacet
*subfacet
;
4510 key_hash
= odp_flow_key_hash(key
, key_len
);
4511 subfacet
= subfacet_find(backer
, key
, key_len
, key_hash
);
4512 switch (subfacet
? subfacet
->path
: SF_NOT_INSTALLED
) {
4514 update_subfacet_stats(subfacet
, stats
);
4518 /* Stats are updated per-packet. */
4521 case SF_NOT_INSTALLED
:
4523 delete_unexpected_flow(backer
, key
, key_len
);
4528 dpif_flow_dump_done(&dump
);
4530 update_moving_averages(backer
);
4533 /* Calculates and returns the number of milliseconds of idle time after which
4534 * subfacets should expire from the datapath. When a subfacet expires, we fold
4535 * its statistics into its facet, and when a facet's last subfacet expires, we
4536 * fold its statistic into its rule. */
4538 subfacet_max_idle(const struct dpif_backer
*backer
)
4541 * Idle time histogram.
4543 * Most of the time a switch has a relatively small number of subfacets.
4544 * When this is the case we might as well keep statistics for all of them
4545 * in userspace and to cache them in the kernel datapath for performance as
4548 * As the number of subfacets increases, the memory required to maintain
4549 * statistics about them in userspace and in the kernel becomes
4550 * significant. However, with a large number of subfacets it is likely
4551 * that only a few of them are "heavy hitters" that consume a large amount
4552 * of bandwidth. At this point, only heavy hitters are worth caching in
4553 * the kernel and maintaining in userspaces; other subfacets we can
4556 * The technique used to compute the idle time is to build a histogram with
4557 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
4558 * that is installed in the kernel gets dropped in the appropriate bucket.
4559 * After the histogram has been built, we compute the cutoff so that only
4560 * the most-recently-used 1% of subfacets (but at least
4561 * flow_eviction_threshold flows) are kept cached. At least
4562 * the most-recently-used bucket of subfacets is kept, so actually an
4563 * arbitrary number of subfacets can be kept in any given expiration run
4564 * (though the next run will delete most of those unless they receive
4567 * This requires a second pass through the subfacets, in addition to the
4568 * pass made by update_stats(), because the former function never looks at
4569 * uninstallable subfacets.
4571 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4572 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4573 int buckets
[N_BUCKETS
] = { 0 };
4574 int total
, subtotal
, bucket
;
4575 struct subfacet
*subfacet
;
4579 total
= hmap_count(&backer
->subfacets
);
4580 if (total
<= flow_eviction_threshold
) {
4581 return N_BUCKETS
* BUCKET_WIDTH
;
4584 /* Build histogram. */
4586 HMAP_FOR_EACH (subfacet
, hmap_node
, &backer
->subfacets
) {
4587 long long int idle
= now
- subfacet
->used
;
4588 int bucket
= (idle
<= 0 ? 0
4589 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4590 : (unsigned int) idle
/ BUCKET_WIDTH
);
4594 /* Find the first bucket whose flows should be expired. */
4595 subtotal
= bucket
= 0;
4597 subtotal
+= buckets
[bucket
++];
4598 } while (bucket
< N_BUCKETS
&&
4599 subtotal
< MAX(flow_eviction_threshold
, total
/ 100));
4601 if (VLOG_IS_DBG_ENABLED()) {
4605 ds_put_cstr(&s
, "keep");
4606 for (i
= 0; i
< N_BUCKETS
; i
++) {
4608 ds_put_cstr(&s
, ", drop");
4611 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4614 VLOG_INFO("%s (msec:count)", ds_cstr(&s
));
4618 return bucket
* BUCKET_WIDTH
;
4622 expire_subfacets(struct dpif_backer
*backer
, int dp_max_idle
)
4624 /* Cutoff time for most flows. */
4625 long long int normal_cutoff
= time_msec() - dp_max_idle
;
4627 /* We really want to keep flows for special protocols around, so use a more
4628 * conservative cutoff. */
4629 long long int special_cutoff
= time_msec() - 10000;
4631 struct subfacet
*subfacet
, *next_subfacet
;
4632 struct subfacet
*batch
[SUBFACET_DESTROY_MAX_BATCH
];
4636 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
4637 &backer
->subfacets
) {
4638 long long int cutoff
;
4640 cutoff
= (subfacet
->facet
->xout
.slow
& (SLOW_CFM
| SLOW_BFD
| SLOW_LACP
4644 if (subfacet
->used
< cutoff
) {
4645 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
4646 batch
[n_batch
++] = subfacet
;
4647 if (n_batch
>= SUBFACET_DESTROY_MAX_BATCH
) {
4648 subfacet_destroy_batch(backer
, batch
, n_batch
);
4652 subfacet_destroy(subfacet
);
4658 subfacet_destroy_batch(backer
, batch
, n_batch
);
4662 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4663 * then delete it entirely. */
4665 rule_expire(struct rule_dpif
*rule
)
4667 struct facet
*facet
, *next_facet
;
4671 if (rule
->up
.pending
) {
4672 /* We'll have to expire it later. */
4676 /* Has 'rule' expired? */
4678 if (rule
->up
.hard_timeout
4679 && now
> rule
->up
.modified
+ rule
->up
.hard_timeout
* 1000) {
4680 reason
= OFPRR_HARD_TIMEOUT
;
4681 } else if (rule
->up
.idle_timeout
4682 && now
> rule
->up
.used
+ rule
->up
.idle_timeout
* 1000) {
4683 reason
= OFPRR_IDLE_TIMEOUT
;
4688 COVERAGE_INC(ofproto_dpif_expired
);
4690 /* Update stats. (This is a no-op if the rule expired due to an idle
4691 * timeout, because that only happens when the rule has no facets left.) */
4692 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4693 facet_remove(facet
);
4696 /* Get rid of the rule. */
4697 ofproto_rule_expire(&rule
->up
, reason
);
4702 /* Creates and returns a new facet based on 'miss'.
4704 * The caller must already have determined that no facet with an identical
4705 * 'miss->flow' exists in 'miss->ofproto'.
4707 * 'rule' and 'xout' must have been created based on 'miss'.
4709 * 'facet'' statistics are initialized based on 'stats'.
4711 * The facet will initially have no subfacets. The caller should create (at
4712 * least) one subfacet with subfacet_create(). */
4713 static struct facet
*
4714 facet_create(const struct flow_miss
*miss
, struct rule_dpif
*rule
,
4715 struct xlate_out
*xout
, struct dpif_flow_stats
*stats
)
4717 struct ofproto_dpif
*ofproto
= miss
->ofproto
;
4718 struct facet
*facet
;
4721 facet
= xzalloc(sizeof *facet
);
4722 facet
->packet_count
= facet
->prev_packet_count
= stats
->n_packets
;
4723 facet
->byte_count
= facet
->prev_byte_count
= stats
->n_bytes
;
4724 facet
->tcp_flags
= stats
->tcp_flags
;
4725 facet
->used
= stats
->used
;
4726 facet
->flow
= miss
->flow
;
4727 facet
->initial_vals
= miss
->initial_vals
;
4728 facet
->learn_rl
= time_msec() + 500;
4731 list_push_back(&facet
->rule
->facets
, &facet
->list_node
);
4732 list_init(&facet
->subfacets
);
4733 netflow_flow_init(&facet
->nf_flow
);
4734 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
4736 xlate_out_copy(&facet
->xout
, xout
);
4738 match_init(&match
, &facet
->flow
, &facet
->xout
.wc
);
4739 cls_rule_init(&facet
->cr
, &match
, OFP_DEFAULT_PRIORITY
);
4740 classifier_insert(&ofproto
->facets
, &facet
->cr
);
4742 facet
->nf_flow
.output_iface
= facet
->xout
.nf_output_iface
;
4748 facet_free(struct facet
*facet
)
4751 xlate_out_uninit(&facet
->xout
);
4756 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4757 * 'packet', which arrived on 'in_port'. */
4759 execute_odp_actions(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4760 const struct nlattr
*odp_actions
, size_t actions_len
,
4761 struct ofpbuf
*packet
)
4763 struct odputil_keybuf keybuf
;
4767 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
4768 odp_flow_key_from_flow(&key
, flow
,
4769 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
4771 error
= dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
4772 odp_actions
, actions_len
, packet
);
4776 /* Remove 'facet' from its ofproto and free up the associated memory:
4778 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4779 * rule's statistics, via subfacet_uninstall().
4781 * - Removes 'facet' from its rule and from ofproto->facets.
4784 facet_remove(struct facet
*facet
)
4786 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4787 struct subfacet
*subfacet
, *next_subfacet
;
4789 ovs_assert(!list_is_empty(&facet
->subfacets
));
4791 /* First uninstall all of the subfacets to get final statistics. */
4792 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4793 subfacet_uninstall(subfacet
);
4796 /* Flush the final stats to the rule.
4798 * This might require us to have at least one subfacet around so that we
4799 * can use its actions for accounting in facet_account(), which is why we
4800 * have uninstalled but not yet destroyed the subfacets. */
4801 facet_flush_stats(facet
);
4803 /* Now we're really all done so destroy everything. */
4804 LIST_FOR_EACH_SAFE (subfacet
, next_subfacet
, list_node
,
4805 &facet
->subfacets
) {
4806 subfacet_destroy__(subfacet
);
4808 classifier_remove(&ofproto
->facets
, &facet
->cr
);
4809 cls_rule_destroy(&facet
->cr
);
4810 list_remove(&facet
->list_node
);
4814 /* Feed information from 'facet' back into the learning table to keep it in
4815 * sync with what is actually flowing through the datapath. */
4817 facet_learn(struct facet
*facet
)
4819 long long int now
= time_msec();
4821 if (!facet
->xout
.has_fin_timeout
&& now
< facet
->learn_rl
) {
4825 facet
->learn_rl
= now
+ 500;
4827 if (!facet
->xout
.has_learn
4828 && !facet
->xout
.has_normal
4829 && (!facet
->xout
.has_fin_timeout
4830 || !(facet
->tcp_flags
& (TCP_FIN
| TCP_RST
)))) {
4834 facet_push_stats(facet
, true);
4838 facet_account(struct facet
*facet
)
4840 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4841 const struct nlattr
*a
;
4846 if (!facet
->xout
.has_normal
|| !ofproto
->has_bonded_bundles
) {
4849 n_bytes
= facet
->byte_count
- facet
->accounted_bytes
;
4851 /* This loop feeds byte counters to bond_account() for rebalancing to use
4852 * as a basis. We also need to track the actual VLAN on which the packet
4853 * is going to be sent to ensure that it matches the one passed to
4854 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4857 * We use the actions from an arbitrary subfacet because they should all
4858 * be equally valid for our purpose. */
4859 vlan_tci
= facet
->flow
.vlan_tci
;
4860 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, facet
->xout
.odp_actions
.data
,
4861 facet
->xout
.odp_actions
.size
) {
4862 const struct ovs_action_push_vlan
*vlan
;
4863 struct ofport_dpif
*port
;
4865 switch (nl_attr_type(a
)) {
4866 case OVS_ACTION_ATTR_OUTPUT
:
4867 port
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
4868 if (port
&& port
->bundle
&& port
->bundle
->bond
) {
4869 bond_account(port
->bundle
->bond
, &facet
->flow
,
4870 vlan_tci_to_vid(vlan_tci
), n_bytes
);
4874 case OVS_ACTION_ATTR_POP_VLAN
:
4875 vlan_tci
= htons(0);
4878 case OVS_ACTION_ATTR_PUSH_VLAN
:
4879 vlan
= nl_attr_get(a
);
4880 vlan_tci
= vlan
->vlan_tci
;
4886 /* Returns true if the only action for 'facet' is to send to the controller.
4887 * (We don't report NetFlow expiration messages for such facets because they
4888 * are just part of the control logic for the network, not real traffic). */
4890 facet_is_controller_flow(struct facet
*facet
)
4893 const struct rule
*rule
= &facet
->rule
->up
;
4894 const struct ofpact
*ofpacts
= rule
->ofpacts
;
4895 size_t ofpacts_len
= rule
->ofpacts_len
;
4897 if (ofpacts_len
> 0 &&
4898 ofpacts
->type
== OFPACT_CONTROLLER
&&
4899 ofpact_next(ofpacts
) >= ofpact_end(ofpacts
, ofpacts_len
)) {
4906 /* Folds all of 'facet''s statistics into its rule. Also updates the
4907 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4908 * 'facet''s statistics in the datapath should have been zeroed and folded into
4909 * its packet and byte counts before this function is called. */
4911 facet_flush_stats(struct facet
*facet
)
4913 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4914 struct subfacet
*subfacet
;
4916 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
4917 ovs_assert(!subfacet
->dp_byte_count
);
4918 ovs_assert(!subfacet
->dp_packet_count
);
4921 facet_push_stats(facet
, false);
4922 if (facet
->accounted_bytes
< facet
->byte_count
) {
4923 facet_account(facet
);
4924 facet
->accounted_bytes
= facet
->byte_count
;
4927 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
4928 struct ofexpired expired
;
4929 expired
.flow
= facet
->flow
;
4930 expired
.packet_count
= facet
->packet_count
;
4931 expired
.byte_count
= facet
->byte_count
;
4932 expired
.used
= facet
->used
;
4933 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4936 /* Reset counters to prevent double counting if 'facet' ever gets
4938 facet_reset_counters(facet
);
4940 netflow_flow_clear(&facet
->nf_flow
);
4941 facet
->tcp_flags
= 0;
4944 /* Searches 'ofproto''s table of facets for one which would be responsible for
4945 * 'flow'. Returns it if found, otherwise a null pointer.
4947 * The returned facet might need revalidation; use facet_lookup_valid()
4948 * instead if that is important. */
4949 static struct facet
*
4950 facet_find(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
4952 struct cls_rule
*cr
= classifier_lookup(&ofproto
->facets
, flow
, NULL
);
4953 return cr
? CONTAINER_OF(cr
, struct facet
, cr
) : NULL
;
4956 /* Searches 'ofproto''s table of facets for one capable that covers
4957 * 'flow'. Returns it if found, otherwise a null pointer.
4959 * The returned facet is guaranteed to be valid. */
4960 static struct facet
*
4961 facet_lookup_valid(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
4963 struct facet
*facet
;
4965 facet
= facet_find(ofproto
, flow
);
4967 && (ofproto
->backer
->need_revalidate
4968 || tag_set_intersects(&ofproto
->backer
->revalidate_set
,
4970 && !facet_revalidate(facet
)) {
4978 facet_check_consistency(struct facet
*facet
)
4980 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
4982 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4984 struct xlate_out xout
;
4985 struct xlate_in xin
;
4987 struct rule_dpif
*rule
;
4990 /* Check the rule for consistency. */
4991 rule
= rule_dpif_lookup(ofproto
, &facet
->flow
, NULL
);
4992 if (rule
!= facet
->rule
) {
4993 if (!VLOG_DROP_WARN(&rl
)) {
4994 struct ds s
= DS_EMPTY_INITIALIZER
;
4996 flow_format(&s
, &facet
->flow
);
4997 ds_put_format(&s
, ": facet associated with wrong rule (was "
4998 "table=%"PRIu8
",", facet
->rule
->up
.table_id
);
4999 cls_rule_format(&facet
->rule
->up
.cr
, &s
);
5000 ds_put_format(&s
, ") (should have been table=%"PRIu8
",",
5002 cls_rule_format(&rule
->up
.cr
, &s
);
5003 ds_put_char(&s
, ')');
5005 VLOG_WARN("%s", ds_cstr(&s
));
5011 /* Check the datapath actions for consistency. */
5012 xlate_in_init(&xin
, ofproto
, &facet
->flow
, &facet
->initial_vals
, rule
,
5014 xlate_actions(&xin
, &xout
);
5016 ok
= ofpbuf_equal(&facet
->xout
.odp_actions
, &xout
.odp_actions
)
5017 && facet
->xout
.slow
== xout
.slow
;
5018 if (!ok
&& !VLOG_DROP_WARN(&rl
)) {
5019 struct ds s
= DS_EMPTY_INITIALIZER
;
5021 flow_format(&s
, &facet
->flow
);
5022 ds_put_cstr(&s
, ": inconsistency in facet");
5024 if (!ofpbuf_equal(&facet
->xout
.odp_actions
, &xout
.odp_actions
)) {
5025 ds_put_cstr(&s
, " (actions were: ");
5026 format_odp_actions(&s
, facet
->xout
.odp_actions
.data
,
5027 facet
->xout
.odp_actions
.size
);
5028 ds_put_cstr(&s
, ") (correct actions: ");
5029 format_odp_actions(&s
, xout
.odp_actions
.data
,
5030 xout
.odp_actions
.size
);
5031 ds_put_char(&s
, ')');
5034 if (facet
->xout
.slow
!= xout
.slow
) {
5035 ds_put_format(&s
, " slow path incorrect. should be %d", xout
.slow
);
5038 VLOG_WARN("%s", ds_cstr(&s
));
5041 xlate_out_uninit(&xout
);
5046 /* Re-searches the classifier for 'facet':
5048 * - If the rule found is different from 'facet''s current rule, moves
5049 * 'facet' to the new rule and recompiles its actions.
5051 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
5052 * where it is and recompiles its actions anyway.
5054 * - If any of 'facet''s subfacets correspond to a new flow according to
5055 * ofproto_receive(), 'facet' is removed.
5057 * Returns true if 'facet' is still valid. False if 'facet' was removed. */
5059 facet_revalidate(struct facet
*facet
)
5061 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5062 struct rule_dpif
*new_rule
;
5063 struct subfacet
*subfacet
;
5064 struct flow_wildcards wc
;
5065 struct xlate_out xout
;
5066 struct xlate_in xin
;
5068 COVERAGE_INC(facet_revalidate
);
5070 /* Check that child subfacets still correspond to this facet. Tunnel
5071 * configuration changes could cause a subfacet's OpenFlow in_port to
5073 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
5074 struct ofproto_dpif
*recv_ofproto
;
5075 struct flow recv_flow
;
5078 error
= ofproto_receive(ofproto
->backer
, NULL
, subfacet
->key
,
5079 subfacet
->key_len
, &recv_flow
, NULL
,
5080 &recv_ofproto
, NULL
, NULL
);
5082 || recv_ofproto
!= ofproto
5083 || facet
!= facet_find(ofproto
, &recv_flow
)) {
5084 facet_remove(facet
);
5089 flow_wildcards_init_catchall(&wc
);
5090 new_rule
= rule_dpif_lookup(ofproto
, &facet
->flow
, &wc
);
5092 /* Calculate new datapath actions.
5094 * We do not modify any 'facet' state yet, because we might need to, e.g.,
5095 * emit a NetFlow expiration and, if so, we need to have the old state
5096 * around to properly compose it. */
5097 xlate_in_init(&xin
, ofproto
, &facet
->flow
, &facet
->initial_vals
, new_rule
,
5099 xlate_actions(&xin
, &xout
);
5100 flow_wildcards_or(&xout
.wc
, &xout
.wc
, &wc
);
5102 /* A facet's slow path reason should only change under dramatic
5103 * circumstances. Rather than try to update everything, it's simpler to
5104 * remove the facet and start over.
5106 * More importantly, if a facet's wildcards change, it will be relatively
5107 * difficult to figure out if its subfacets still belong to it, and if not
5108 * which facet they may belong to. Again, to avoid the complexity, we
5109 * simply give up instead. */
5110 if (facet
->xout
.slow
!= xout
.slow
5111 || memcmp(&facet
->xout
.wc
, &xout
.wc
, sizeof xout
.wc
)) {
5112 facet_remove(facet
);
5113 xlate_out_uninit(&xout
);
5117 if (!ofpbuf_equal(&facet
->xout
.odp_actions
, &xout
.odp_actions
)) {
5118 LIST_FOR_EACH(subfacet
, list_node
, &facet
->subfacets
) {
5119 if (subfacet
->path
== SF_FAST_PATH
) {
5120 struct dpif_flow_stats stats
;
5122 subfacet_install(subfacet
, &xout
.odp_actions
, &stats
);
5123 subfacet_update_stats(subfacet
, &stats
);
5127 facet_flush_stats(facet
);
5129 ofpbuf_clear(&facet
->xout
.odp_actions
);
5130 ofpbuf_put(&facet
->xout
.odp_actions
, xout
.odp_actions
.data
,
5131 xout
.odp_actions
.size
);
5134 /* Update 'facet' now that we've taken care of all the old state. */
5135 facet
->xout
.tags
= xout
.tags
;
5136 facet
->xout
.slow
= xout
.slow
;
5137 facet
->xout
.has_learn
= xout
.has_learn
;
5138 facet
->xout
.has_normal
= xout
.has_normal
;
5139 facet
->xout
.has_fin_timeout
= xout
.has_fin_timeout
;
5140 facet
->xout
.nf_output_iface
= xout
.nf_output_iface
;
5141 facet
->xout
.mirrors
= xout
.mirrors
;
5142 facet
->nf_flow
.output_iface
= facet
->xout
.nf_output_iface
;
5144 if (facet
->rule
!= new_rule
) {
5145 COVERAGE_INC(facet_changed_rule
);
5146 list_remove(&facet
->list_node
);
5147 list_push_back(&new_rule
->facets
, &facet
->list_node
);
5148 facet
->rule
= new_rule
;
5149 facet
->used
= new_rule
->up
.created
;
5150 facet
->prev_used
= facet
->used
;
5153 xlate_out_uninit(&xout
);
5158 facet_reset_counters(struct facet
*facet
)
5160 facet
->packet_count
= 0;
5161 facet
->byte_count
= 0;
5162 facet
->prev_packet_count
= 0;
5163 facet
->prev_byte_count
= 0;
5164 facet
->accounted_bytes
= 0;
5168 facet_push_stats(struct facet
*facet
, bool may_learn
)
5170 struct dpif_flow_stats stats
;
5172 ovs_assert(facet
->packet_count
>= facet
->prev_packet_count
);
5173 ovs_assert(facet
->byte_count
>= facet
->prev_byte_count
);
5174 ovs_assert(facet
->used
>= facet
->prev_used
);
5176 stats
.n_packets
= facet
->packet_count
- facet
->prev_packet_count
;
5177 stats
.n_bytes
= facet
->byte_count
- facet
->prev_byte_count
;
5178 stats
.used
= facet
->used
;
5179 stats
.tcp_flags
= facet
->tcp_flags
;
5181 if (may_learn
|| stats
.n_packets
|| facet
->used
> facet
->prev_used
) {
5182 struct ofproto_dpif
*ofproto
=
5183 ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5185 struct ofport_dpif
*in_port
;
5186 struct xlate_in xin
;
5188 facet
->prev_packet_count
= facet
->packet_count
;
5189 facet
->prev_byte_count
= facet
->byte_count
;
5190 facet
->prev_used
= facet
->used
;
5192 in_port
= get_ofp_port(ofproto
, facet
->flow
.in_port
);
5193 if (in_port
&& in_port
->tnl_port
) {
5194 netdev_vport_inc_rx(in_port
->up
.netdev
, &stats
);
5197 rule_credit_stats(facet
->rule
, &stats
);
5198 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
,
5200 netflow_flow_update_flags(&facet
->nf_flow
, facet
->tcp_flags
);
5201 update_mirror_stats(ofproto
, facet
->xout
.mirrors
, stats
.n_packets
,
5204 xlate_in_init(&xin
, ofproto
, &facet
->flow
, &facet
->initial_vals
,
5205 facet
->rule
, stats
.tcp_flags
, NULL
);
5206 xin
.resubmit_stats
= &stats
;
5207 xin
.may_learn
= may_learn
;
5208 xlate_actions_for_side_effects(&xin
);
5213 push_all_stats__(bool run_fast
)
5215 static long long int rl
= LLONG_MIN
;
5216 struct ofproto_dpif
*ofproto
;
5218 if (time_msec() < rl
) {
5222 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
5223 struct cls_cursor cursor
;
5224 struct facet
*facet
;
5226 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
5227 CLS_CURSOR_FOR_EACH (facet
, cr
, &cursor
) {
5228 facet_push_stats(facet
, false);
5235 rl
= time_msec() + 100;
5239 push_all_stats(void)
5241 push_all_stats__(true);
5245 rule_credit_stats(struct rule_dpif
*rule
, const struct dpif_flow_stats
*stats
)
5247 rule
->packet_count
+= stats
->n_packets
;
5248 rule
->byte_count
+= stats
->n_bytes
;
5249 ofproto_rule_update_used(&rule
->up
, stats
->used
);
5254 static struct subfacet
*
5255 subfacet_find(struct dpif_backer
*backer
, const struct nlattr
*key
,
5256 size_t key_len
, uint32_t key_hash
)
5258 struct subfacet
*subfacet
;
5260 HMAP_FOR_EACH_WITH_HASH (subfacet
, hmap_node
, key_hash
,
5261 &backer
->subfacets
) {
5262 if (subfacet
->key_len
== key_len
5263 && !memcmp(key
, subfacet
->key
, key_len
)) {
5271 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
5272 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
5273 * existing subfacet if there is one, otherwise creates and returns a
5275 static struct subfacet
*
5276 subfacet_create(struct facet
*facet
, struct flow_miss
*miss
,
5279 struct dpif_backer
*backer
= miss
->ofproto
->backer
;
5280 enum odp_key_fitness key_fitness
= miss
->key_fitness
;
5281 const struct nlattr
*key
= miss
->key
;
5282 size_t key_len
= miss
->key_len
;
5284 struct subfacet
*subfacet
;
5286 key_hash
= odp_flow_key_hash(key
, key_len
);
5288 if (list_is_empty(&facet
->subfacets
)) {
5289 subfacet
= &facet
->one_subfacet
;
5291 subfacet
= subfacet_find(backer
, key
, key_len
, key_hash
);
5293 if (subfacet
->facet
== facet
) {
5297 /* This shouldn't happen. */
5298 VLOG_ERR_RL(&rl
, "subfacet with wrong facet");
5299 subfacet_destroy(subfacet
);
5302 subfacet
= xmalloc(sizeof *subfacet
);
5305 hmap_insert(&backer
->subfacets
, &subfacet
->hmap_node
, key_hash
);
5306 list_push_back(&facet
->subfacets
, &subfacet
->list_node
);
5307 subfacet
->facet
= facet
;
5308 subfacet
->key_fitness
= key_fitness
;
5309 subfacet
->key
= xmemdup(key
, key_len
);
5310 subfacet
->key_len
= key_len
;
5311 subfacet
->used
= now
;
5312 subfacet
->created
= now
;
5313 subfacet
->dp_packet_count
= 0;
5314 subfacet
->dp_byte_count
= 0;
5315 subfacet
->path
= SF_NOT_INSTALLED
;
5316 subfacet
->backer
= backer
;
5318 backer
->subfacet_add_count
++;
5322 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
5323 * its facet within 'ofproto', and frees it. */
5325 subfacet_destroy__(struct subfacet
*subfacet
)
5327 struct facet
*facet
= subfacet
->facet
;
5328 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5330 /* Update ofproto stats before uninstall the subfacet. */
5331 ofproto
->backer
->subfacet_del_count
++;
5333 subfacet_uninstall(subfacet
);
5334 hmap_remove(&subfacet
->backer
->subfacets
, &subfacet
->hmap_node
);
5335 list_remove(&subfacet
->list_node
);
5336 free(subfacet
->key
);
5337 if (subfacet
!= &facet
->one_subfacet
) {
5342 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
5343 * last remaining subfacet in its facet destroys the facet too. */
5345 subfacet_destroy(struct subfacet
*subfacet
)
5347 struct facet
*facet
= subfacet
->facet
;
5349 if (list_is_singleton(&facet
->subfacets
)) {
5350 /* facet_remove() needs at least one subfacet (it will remove it). */
5351 facet_remove(facet
);
5353 subfacet_destroy__(subfacet
);
5358 subfacet_destroy_batch(struct dpif_backer
*backer
,
5359 struct subfacet
**subfacets
, int n
)
5361 struct dpif_op ops
[SUBFACET_DESTROY_MAX_BATCH
];
5362 struct dpif_op
*opsp
[SUBFACET_DESTROY_MAX_BATCH
];
5363 struct dpif_flow_stats stats
[SUBFACET_DESTROY_MAX_BATCH
];
5366 for (i
= 0; i
< n
; i
++) {
5367 ops
[i
].type
= DPIF_OP_FLOW_DEL
;
5368 ops
[i
].u
.flow_del
.key
= subfacets
[i
]->key
;
5369 ops
[i
].u
.flow_del
.key_len
= subfacets
[i
]->key_len
;
5370 ops
[i
].u
.flow_del
.stats
= &stats
[i
];
5374 dpif_operate(backer
->dpif
, opsp
, n
);
5375 for (i
= 0; i
< n
; i
++) {
5376 subfacet_reset_dp_stats(subfacets
[i
], &stats
[i
]);
5377 subfacets
[i
]->path
= SF_NOT_INSTALLED
;
5378 subfacet_destroy(subfacets
[i
]);
5383 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
5384 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
5385 * in the datapath will be zeroed and 'stats' will be updated with traffic new
5386 * since 'subfacet' was last updated.
5388 * Returns 0 if successful, otherwise a positive errno value. */
5390 subfacet_install(struct subfacet
*subfacet
, const struct ofpbuf
*odp_actions
,
5391 struct dpif_flow_stats
*stats
)
5393 struct facet
*facet
= subfacet
->facet
;
5394 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
5395 enum subfacet_path path
= facet
->xout
.slow
? SF_SLOW_PATH
: SF_FAST_PATH
;
5396 const struct nlattr
*actions
= odp_actions
->data
;
5397 size_t actions_len
= odp_actions
->size
;
5399 uint64_t slow_path_stub
[128 / 8];
5400 enum dpif_flow_put_flags flags
;
5403 flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
5405 flags
|= DPIF_FP_ZERO_STATS
;
5408 if (path
== SF_SLOW_PATH
) {
5409 compose_slow_path(ofproto
, &facet
->flow
, facet
->xout
.slow
,
5410 slow_path_stub
, sizeof slow_path_stub
,
5411 &actions
, &actions_len
);
5414 ret
= dpif_flow_put(subfacet
->backer
->dpif
, flags
, subfacet
->key
,
5415 subfacet
->key_len
, actions
, actions_len
, stats
);
5418 subfacet_reset_dp_stats(subfacet
, stats
);
5422 subfacet
->path
= path
;
5427 /* If 'subfacet' is installed in the datapath, uninstalls it. */
5429 subfacet_uninstall(struct subfacet
*subfacet
)
5431 if (subfacet
->path
!= SF_NOT_INSTALLED
) {
5432 struct rule_dpif
*rule
= subfacet
->facet
->rule
;
5433 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5434 struct dpif_flow_stats stats
;
5437 error
= dpif_flow_del(ofproto
->backer
->dpif
, subfacet
->key
,
5438 subfacet
->key_len
, &stats
);
5439 subfacet_reset_dp_stats(subfacet
, &stats
);
5441 subfacet_update_stats(subfacet
, &stats
);
5443 subfacet
->path
= SF_NOT_INSTALLED
;
5445 ovs_assert(subfacet
->dp_packet_count
== 0);
5446 ovs_assert(subfacet
->dp_byte_count
== 0);
5450 /* Resets 'subfacet''s datapath statistics counters. This should be called
5451 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
5452 * non-null, it should contain the statistics returned by dpif when 'subfacet'
5453 * was reset in the datapath. 'stats' will be modified to include only
5454 * statistics new since 'subfacet' was last updated. */
5456 subfacet_reset_dp_stats(struct subfacet
*subfacet
,
5457 struct dpif_flow_stats
*stats
)
5460 && subfacet
->dp_packet_count
<= stats
->n_packets
5461 && subfacet
->dp_byte_count
<= stats
->n_bytes
) {
5462 stats
->n_packets
-= subfacet
->dp_packet_count
;
5463 stats
->n_bytes
-= subfacet
->dp_byte_count
;
5466 subfacet
->dp_packet_count
= 0;
5467 subfacet
->dp_byte_count
= 0;
5470 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
5472 * Because of the meaning of a subfacet's counters, it only makes sense to do
5473 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
5474 * represents a packet that was sent by hand or if it represents statistics
5475 * that have been cleared out of the datapath. */
5477 subfacet_update_stats(struct subfacet
*subfacet
,
5478 const struct dpif_flow_stats
*stats
)
5480 if (stats
->n_packets
|| stats
->used
> subfacet
->used
) {
5481 struct facet
*facet
= subfacet
->facet
;
5483 subfacet
->used
= MAX(subfacet
->used
, stats
->used
);
5484 facet
->used
= MAX(facet
->used
, stats
->used
);
5485 facet
->packet_count
+= stats
->n_packets
;
5486 facet
->byte_count
+= stats
->n_bytes
;
5487 facet
->tcp_flags
|= stats
->tcp_flags
;
5493 /* Lookup 'flow' in 'ofproto''s classifier. If 'wc' is non-null, sets
5494 * the fields that were relevant as part of the lookup. */
5495 static struct rule_dpif
*
5496 rule_dpif_lookup(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5497 struct flow_wildcards
*wc
)
5499 struct rule_dpif
*rule
;
5501 rule
= rule_dpif_lookup__(ofproto
, flow
, wc
, 0);
5506 return rule_dpif_miss_rule(ofproto
, flow
);
5509 static struct rule_dpif
*
5510 rule_dpif_lookup__(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5511 struct flow_wildcards
*wc
, uint8_t table_id
)
5513 struct cls_rule
*cls_rule
;
5514 struct classifier
*cls
;
5517 if (table_id
>= N_TABLES
) {
5521 cls
= &ofproto
->up
.tables
[table_id
].cls
;
5522 frag
= (flow
->nw_frag
& FLOW_NW_FRAG_ANY
) != 0;
5523 if (frag
&& ofproto
->up
.frag_handling
== OFPC_FRAG_NORMAL
) {
5524 /* We must pretend that transport ports are unavailable. */
5525 struct flow ofpc_normal_flow
= *flow
;
5526 ofpc_normal_flow
.tp_src
= htons(0);
5527 ofpc_normal_flow
.tp_dst
= htons(0);
5528 cls_rule
= classifier_lookup(cls
, &ofpc_normal_flow
, wc
);
5529 } else if (frag
&& ofproto
->up
.frag_handling
== OFPC_FRAG_DROP
) {
5530 cls_rule
= &ofproto
->drop_frags_rule
->up
.cr
;
5532 flow_wildcards_init_exact(wc
);
5535 cls_rule
= classifier_lookup(cls
, flow
, wc
);
5537 return rule_dpif_cast(rule_from_cls_rule(cls_rule
));
5540 static struct rule_dpif
*
5541 rule_dpif_miss_rule(struct ofproto_dpif
*ofproto
, const struct flow
*flow
)
5543 struct ofport_dpif
*port
;
5545 port
= get_ofp_port(ofproto
, flow
->in_port
);
5547 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, flow
->in_port
);
5548 return ofproto
->miss_rule
;
5551 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_PACKET_IN
) {
5552 return ofproto
->no_packet_in_rule
;
5554 return ofproto
->miss_rule
;
5558 complete_operation(struct rule_dpif
*rule
)
5560 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5562 rule_invalidate(rule
);
5564 struct dpif_completion
*c
= xmalloc(sizeof *c
);
5565 c
->op
= rule
->up
.pending
;
5566 list_push_back(&ofproto
->completions
, &c
->list_node
);
5568 ofoperation_complete(rule
->up
.pending
, 0);
5572 static struct rule
*
5575 struct rule_dpif
*rule
= xmalloc(sizeof *rule
);
5580 rule_dealloc(struct rule
*rule_
)
5582 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5587 rule_construct(struct rule
*rule_
)
5589 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5590 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5591 struct rule_dpif
*victim
;
5594 rule
->packet_count
= 0;
5595 rule
->byte_count
= 0;
5597 victim
= rule_dpif_cast(ofoperation_get_victim(rule
->up
.pending
));
5598 if (victim
&& !list_is_empty(&victim
->facets
)) {
5599 struct facet
*facet
;
5601 rule
->facets
= victim
->facets
;
5602 list_moved(&rule
->facets
);
5603 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
5604 /* XXX: We're only clearing our local counters here. It's possible
5605 * that quite a few packets are unaccounted for in the datapath
5606 * statistics. These will be accounted to the new rule instead of
5607 * cleared as required. This could be fixed by clearing out the
5608 * datapath statistics for this facet, but currently it doesn't
5610 facet_reset_counters(facet
);
5614 /* Must avoid list_moved() in this case. */
5615 list_init(&rule
->facets
);
5618 table_id
= rule
->up
.table_id
;
5620 rule
->tag
= victim
->tag
;
5621 } else if (table_id
== 0) {
5626 miniflow_expand(&rule
->up
.cr
.match
.flow
, &flow
);
5627 rule
->tag
= rule_calculate_tag(&flow
, &rule
->up
.cr
.match
.mask
,
5628 ofproto
->tables
[table_id
].basis
);
5631 complete_operation(rule
);
5636 rule_destruct(struct rule
*rule_
)
5638 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5639 struct facet
*facet
, *next_facet
;
5641 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
5642 facet_revalidate(facet
);
5645 complete_operation(rule
);
5649 rule_get_stats(struct rule
*rule_
, uint64_t *packets
, uint64_t *bytes
)
5651 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5653 /* push_all_stats() can handle flow misses which, when using the learn
5654 * action, can cause rules to be added and deleted. This can corrupt our
5655 * caller's datastructures which assume that rule_get_stats() doesn't have
5656 * an impact on the flow table. To be safe, we disable miss handling. */
5657 push_all_stats__(false);
5659 /* Start from historical data for 'rule' itself that are no longer tracked
5660 * in facets. This counts, for example, facets that have expired. */
5661 *packets
= rule
->packet_count
;
5662 *bytes
= rule
->byte_count
;
5666 rule_dpif_execute(struct rule_dpif
*rule
, const struct flow
*flow
,
5667 struct ofpbuf
*packet
)
5669 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
5670 struct initial_vals initial_vals
;
5671 struct dpif_flow_stats stats
;
5672 struct xlate_out xout
;
5673 struct xlate_in xin
;
5675 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
5676 rule_credit_stats(rule
, &stats
);
5678 initial_vals
.vlan_tci
= flow
->vlan_tci
;
5679 xlate_in_init(&xin
, ofproto
, flow
, &initial_vals
, rule
, stats
.tcp_flags
,
5681 xin
.resubmit_stats
= &stats
;
5682 xlate_actions(&xin
, &xout
);
5684 execute_odp_actions(ofproto
, flow
, xout
.odp_actions
.data
,
5685 xout
.odp_actions
.size
, packet
);
5687 xlate_out_uninit(&xout
);
5691 rule_execute(struct rule
*rule
, const struct flow
*flow
,
5692 struct ofpbuf
*packet
)
5694 rule_dpif_execute(rule_dpif_cast(rule
), flow
, packet
);
5695 ofpbuf_delete(packet
);
5700 rule_modify_actions(struct rule
*rule_
)
5702 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
5704 complete_operation(rule
);
5707 /* Sends 'packet' out 'ofport'.
5708 * May modify 'packet'.
5709 * Returns 0 if successful, otherwise a positive errno value. */
5711 send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
5713 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
5714 uint64_t odp_actions_stub
[1024 / 8];
5715 struct ofpbuf key
, odp_actions
;
5716 struct dpif_flow_stats stats
;
5717 struct odputil_keybuf keybuf
;
5718 struct ofpact_output output
;
5719 struct xlate_out xout
;
5720 struct xlate_in xin
;
5724 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
5725 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
5727 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
5728 flow_extract(packet
, 0, 0, NULL
, OFPP_NONE
, &flow
);
5729 odp_flow_key_from_flow(&key
, &flow
, ofp_port_to_odp_port(ofproto
,
5731 dpif_flow_stats_extract(&flow
, packet
, time_msec(), &stats
);
5733 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
5734 output
.port
= ofport
->up
.ofp_port
;
5737 xlate_in_init(&xin
, ofproto
, &flow
, NULL
, NULL
, 0, packet
);
5738 xin
.ofpacts_len
= sizeof output
;
5739 xin
.ofpacts
= &output
.ofpact
;
5740 xin
.resubmit_stats
= &stats
;
5741 xlate_actions(&xin
, &xout
);
5743 error
= dpif_execute(ofproto
->backer
->dpif
,
5745 xout
.odp_actions
.data
, xout
.odp_actions
.size
,
5747 xlate_out_uninit(&xout
);
5750 VLOG_WARN_RL(&rl
, "%s: failed to send packet on port %s (%s)",
5751 ofproto
->up
.name
, netdev_get_name(ofport
->up
.netdev
),
5755 ofproto
->stats
.tx_packets
++;
5756 ofproto
->stats
.tx_bytes
+= packet
->size
;
5760 /* OpenFlow to datapath action translation. */
5762 static bool may_receive(const struct ofport_dpif
*, struct xlate_ctx
*);
5763 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
5764 struct xlate_ctx
*);
5765 static void xlate_normal(struct xlate_ctx
*);
5767 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5768 * The action will state 'slow' as the reason that the action is in the slow
5769 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5770 * dump-flows" output to see why a flow is in the slow path.)
5772 * The 'stub_size' bytes in 'stub' will be used to store the action.
5773 * 'stub_size' must be large enough for the action.
5775 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5778 compose_slow_path(const struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5779 enum slow_path_reason slow
,
5780 uint64_t *stub
, size_t stub_size
,
5781 const struct nlattr
**actionsp
, size_t *actions_lenp
)
5783 union user_action_cookie cookie
;
5786 cookie
.type
= USER_ACTION_COOKIE_SLOW_PATH
;
5787 cookie
.slow_path
.unused
= 0;
5788 cookie
.slow_path
.reason
= slow
;
5790 ofpbuf_use_stack(&buf
, stub
, stub_size
);
5791 if (slow
& (SLOW_CFM
| SLOW_BFD
| SLOW_LACP
| SLOW_STP
)) {
5792 uint32_t pid
= dpif_port_get_pid(ofproto
->backer
->dpif
, UINT32_MAX
);
5793 odp_put_userspace_action(pid
, &cookie
, sizeof cookie
.slow_path
, &buf
);
5795 put_userspace_action(ofproto
, &buf
, flow
, &cookie
,
5796 sizeof cookie
.slow_path
);
5798 *actionsp
= buf
.data
;
5799 *actions_lenp
= buf
.size
;
5803 put_userspace_action(const struct ofproto_dpif
*ofproto
,
5804 struct ofpbuf
*odp_actions
,
5805 const struct flow
*flow
,
5806 const union user_action_cookie
*cookie
,
5807 const size_t cookie_size
)
5811 pid
= dpif_port_get_pid(ofproto
->backer
->dpif
,
5812 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
5814 return odp_put_userspace_action(pid
, cookie
, cookie_size
, odp_actions
);
5817 /* Compose SAMPLE action for sFlow or IPFIX. The given probability is
5818 * the number of packets out of UINT32_MAX to sample. The given
5819 * cookie is passed back in the callback for each sampled packet.
5822 compose_sample_action(const struct ofproto_dpif
*ofproto
,
5823 struct ofpbuf
*odp_actions
,
5824 const struct flow
*flow
,
5825 const uint32_t probability
,
5826 const union user_action_cookie
*cookie
,
5827 const size_t cookie_size
)
5829 size_t sample_offset
, actions_offset
;
5832 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
5834 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
5836 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
5837 cookie_offset
= put_userspace_action(ofproto
, odp_actions
, flow
, cookie
,
5840 nl_msg_end_nested(odp_actions
, actions_offset
);
5841 nl_msg_end_nested(odp_actions
, sample_offset
);
5842 return cookie_offset
;
5846 compose_sflow_cookie(const struct ofproto_dpif
*ofproto
,
5847 ovs_be16 vlan_tci
, uint32_t odp_port
,
5848 unsigned int n_outputs
, union user_action_cookie
*cookie
)
5852 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
5853 cookie
->sflow
.vlan_tci
= vlan_tci
;
5855 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
5856 * port information") for the interpretation of cookie->output. */
5857 switch (n_outputs
) {
5859 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
5860 cookie
->sflow
.output
= 0x40000000 | 256;
5864 ifindex
= dpif_sflow_odp_port_to_ifindex(ofproto
->sflow
, odp_port
);
5866 cookie
->sflow
.output
= ifindex
;
5871 /* 0x80000000 means "multiple output ports. */
5872 cookie
->sflow
.output
= 0x80000000 | n_outputs
;
5877 /* Compose SAMPLE action for sFlow bridge sampling. */
5879 compose_sflow_action(const struct ofproto_dpif
*ofproto
,
5880 struct ofpbuf
*odp_actions
,
5881 const struct flow
*flow
,
5884 uint32_t probability
;
5885 union user_action_cookie cookie
;
5887 if (!ofproto
->sflow
|| flow
->in_port
== OFPP_NONE
) {
5891 probability
= dpif_sflow_get_probability(ofproto
->sflow
);
5892 compose_sflow_cookie(ofproto
, htons(0), odp_port
,
5893 odp_port
== OVSP_NONE
? 0 : 1, &cookie
);
5895 return compose_sample_action(ofproto
, odp_actions
, flow
, probability
,
5896 &cookie
, sizeof cookie
.sflow
);
5900 compose_flow_sample_cookie(uint16_t probability
, uint32_t collector_set_id
,
5901 uint32_t obs_domain_id
, uint32_t obs_point_id
,
5902 union user_action_cookie
*cookie
)
5904 cookie
->type
= USER_ACTION_COOKIE_FLOW_SAMPLE
;
5905 cookie
->flow_sample
.probability
= probability
;
5906 cookie
->flow_sample
.collector_set_id
= collector_set_id
;
5907 cookie
->flow_sample
.obs_domain_id
= obs_domain_id
;
5908 cookie
->flow_sample
.obs_point_id
= obs_point_id
;
5912 compose_ipfix_cookie(union user_action_cookie
*cookie
)
5914 cookie
->type
= USER_ACTION_COOKIE_IPFIX
;
5917 /* Compose SAMPLE action for IPFIX bridge sampling. */
5919 compose_ipfix_action(const struct ofproto_dpif
*ofproto
,
5920 struct ofpbuf
*odp_actions
,
5921 const struct flow
*flow
)
5923 uint32_t probability
;
5924 union user_action_cookie cookie
;
5926 if (!ofproto
->ipfix
|| flow
->in_port
== OFPP_NONE
) {
5930 probability
= dpif_ipfix_get_bridge_exporter_probability(ofproto
->ipfix
);
5931 compose_ipfix_cookie(&cookie
);
5933 compose_sample_action(ofproto
, odp_actions
, flow
, probability
,
5934 &cookie
, sizeof cookie
.ipfix
);
5937 /* SAMPLE action for sFlow must be first action in any given list of
5938 * actions. At this point we do not have all information required to
5939 * build it. So try to build sample action as complete as possible. */
5941 add_sflow_action(struct xlate_ctx
*ctx
)
5943 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->ofproto
,
5944 &ctx
->xout
->odp_actions
,
5945 &ctx
->xin
->flow
, OVSP_NONE
);
5946 ctx
->sflow_odp_port
= 0;
5947 ctx
->sflow_n_outputs
= 0;
5950 /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list
5951 * of actions, eventually after the SAMPLE action for sFlow. */
5953 add_ipfix_action(struct xlate_ctx
*ctx
)
5955 compose_ipfix_action(ctx
->ofproto
, &ctx
->xout
->odp_actions
,
5959 /* Fix SAMPLE action according to data collected while composing ODP actions.
5960 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
5961 * USERSPACE action's user-cookie which is required for sflow. */
5963 fix_sflow_action(struct xlate_ctx
*ctx
)
5965 const struct flow
*base
= &ctx
->base_flow
;
5966 union user_action_cookie
*cookie
;
5968 if (!ctx
->user_cookie_offset
) {
5972 cookie
= ofpbuf_at(&ctx
->xout
->odp_actions
, ctx
->user_cookie_offset
,
5973 sizeof cookie
->sflow
);
5974 ovs_assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
5976 compose_sflow_cookie(ctx
->ofproto
, base
->vlan_tci
,
5977 ctx
->sflow_odp_port
, ctx
->sflow_n_outputs
, cookie
);
5981 compose_output_action__(struct xlate_ctx
*ctx
, uint16_t ofp_port
,
5984 const struct ofport_dpif
*ofport
= get_ofp_port(ctx
->ofproto
, ofp_port
);
5985 ovs_be16 flow_vlan_tci
;
5986 uint32_t flow_skb_mark
;
5987 uint8_t flow_nw_tos
;
5988 struct priority_to_dscp
*pdscp
;
5989 uint32_t out_port
, odp_port
;
5991 /* If 'struct flow' gets additional metadata, we'll need to zero it out
5992 * before traversing a patch port. */
5993 BUILD_ASSERT_DECL(FLOW_WC_SEQ
== 20);
5996 xlate_report(ctx
, "Nonexistent output port");
5998 } else if (ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FWD
) {
5999 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
6001 } else if (check_stp
&& !stp_forward_in_state(ofport
->stp_state
)) {
6002 xlate_report(ctx
, "STP not in forwarding state, skipping output");
6006 if (netdev_vport_is_patch(ofport
->up
.netdev
)) {
6007 struct ofport_dpif
*peer
= ofport_get_peer(ofport
);
6008 struct flow old_flow
= ctx
->xin
->flow
;
6009 const struct ofproto_dpif
*peer_ofproto
;
6010 enum slow_path_reason special
;
6011 struct ofport_dpif
*in_port
;
6014 xlate_report(ctx
, "Nonexistent patch port peer");
6018 peer_ofproto
= ofproto_dpif_cast(peer
->up
.ofproto
);
6019 if (peer_ofproto
->backer
!= ctx
->ofproto
->backer
) {
6020 xlate_report(ctx
, "Patch port peer on a different datapath");
6024 ctx
->ofproto
= ofproto_dpif_cast(peer
->up
.ofproto
);
6025 ctx
->xin
->flow
.in_port
= peer
->up
.ofp_port
;
6026 ctx
->xin
->flow
.metadata
= htonll(0);
6027 memset(&ctx
->xin
->flow
.tunnel
, 0, sizeof ctx
->xin
->flow
.tunnel
);
6028 memset(ctx
->xin
->flow
.regs
, 0, sizeof ctx
->xin
->flow
.regs
);
6030 in_port
= get_ofp_port(ctx
->ofproto
, ctx
->xin
->flow
.in_port
);
6031 special
= process_special(ctx
->ofproto
, &ctx
->xin
->flow
, in_port
,
6034 ctx
->xout
->slow
= special
;
6035 } else if (!in_port
|| may_receive(in_port
, ctx
)) {
6036 if (!in_port
|| stp_forward_in_state(in_port
->stp_state
)) {
6037 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
, 0, true);
6039 /* Forwarding is disabled by STP. Let OFPP_NORMAL and the
6040 * learning action look at the packet, then drop it. */
6041 struct flow old_base_flow
= ctx
->base_flow
;
6042 size_t old_size
= ctx
->xout
->odp_actions
.size
;
6043 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
, 0, true);
6044 ctx
->base_flow
= old_base_flow
;
6045 ctx
->xout
->odp_actions
.size
= old_size
;
6049 ctx
->xin
->flow
= old_flow
;
6050 ctx
->ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
6052 if (ctx
->xin
->resubmit_stats
) {
6053 netdev_vport_inc_tx(ofport
->up
.netdev
, ctx
->xin
->resubmit_stats
);
6054 netdev_vport_inc_rx(peer
->up
.netdev
, ctx
->xin
->resubmit_stats
);
6060 flow_vlan_tci
= ctx
->xin
->flow
.vlan_tci
;
6061 flow_skb_mark
= ctx
->xin
->flow
.skb_mark
;
6062 flow_nw_tos
= ctx
->xin
->flow
.nw_tos
;
6064 pdscp
= get_priority(ofport
, ctx
->xin
->flow
.skb_priority
);
6066 ctx
->xin
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
6067 ctx
->xin
->flow
.nw_tos
|= pdscp
->dscp
;
6070 if (ofport
->tnl_port
) {
6071 /* Save tunnel metadata so that changes made due to
6072 * the Logical (tunnel) Port are not visible for any further
6073 * matches, while explicit set actions on tunnel metadata are.
6075 struct flow_tnl flow_tnl
= ctx
->xin
->flow
.tunnel
;
6076 odp_port
= tnl_port_send(ofport
->tnl_port
, &ctx
->xin
->flow
);
6077 if (odp_port
== OVSP_NONE
) {
6078 xlate_report(ctx
, "Tunneling decided against output");
6079 goto out
; /* restore flow_nw_tos */
6081 if (ctx
->xin
->flow
.tunnel
.ip_dst
== ctx
->orig_tunnel_ip_dst
) {
6082 xlate_report(ctx
, "Not tunneling to our own address");
6083 goto out
; /* restore flow_nw_tos */
6085 if (ctx
->xin
->resubmit_stats
) {
6086 netdev_vport_inc_tx(ofport
->up
.netdev
, ctx
->xin
->resubmit_stats
);
6088 out_port
= odp_port
;
6089 commit_odp_tunnel_action(&ctx
->xin
->flow
, &ctx
->base_flow
,
6090 &ctx
->xout
->odp_actions
);
6091 ctx
->xin
->flow
.tunnel
= flow_tnl
; /* Restore tunnel metadata */
6093 uint16_t vlandev_port
;
6094 odp_port
= ofport
->odp_port
;
6095 vlandev_port
= vsp_realdev_to_vlandev(ctx
->ofproto
, ofp_port
,
6096 ctx
->xin
->flow
.vlan_tci
);
6097 if (vlandev_port
== ofp_port
) {
6098 out_port
= odp_port
;
6100 out_port
= ofp_port_to_odp_port(ctx
->ofproto
, vlandev_port
);
6101 ctx
->xin
->flow
.vlan_tci
= htons(0);
6103 ctx
->xin
->flow
.skb_mark
&= ~IPSEC_MARK
;
6105 commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
6106 &ctx
->xout
->odp_actions
);
6107 nl_msg_put_u32(&ctx
->xout
->odp_actions
, OVS_ACTION_ATTR_OUTPUT
, out_port
);
6109 ctx
->sflow_odp_port
= odp_port
;
6110 ctx
->sflow_n_outputs
++;
6111 ctx
->xout
->nf_output_iface
= ofp_port
;
6114 ctx
->xin
->flow
.vlan_tci
= flow_vlan_tci
;
6115 ctx
->xin
->flow
.skb_mark
= flow_skb_mark
;
6117 ctx
->xin
->flow
.nw_tos
= flow_nw_tos
;
6121 compose_output_action(struct xlate_ctx
*ctx
, uint16_t ofp_port
)
6123 compose_output_action__(ctx
, ofp_port
, true);
6127 tag_the_flow(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
)
6129 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
6130 uint8_t table_id
= ctx
->table_id
;
6132 if (table_id
> 0 && table_id
< N_TABLES
) {
6133 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
6134 if (table
->other_table
) {
6135 ctx
->xout
->tags
|= (rule
&& rule
->tag
6137 : rule_calculate_tag(&ctx
->xin
->flow
,
6138 &table
->other_table
->mask
,
6144 /* Common rule processing in one place to avoid duplicating code. */
6145 static struct rule_dpif
*
6146 ctx_rule_hooks(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
,
6149 if (ctx
->xin
->resubmit_hook
) {
6150 ctx
->xin
->resubmit_hook(ctx
, rule
);
6152 if (rule
== NULL
&& may_packet_in
) {
6154 * check if table configuration flags
6155 * OFPTC_TABLE_MISS_CONTROLLER, default.
6156 * OFPTC_TABLE_MISS_CONTINUE,
6157 * OFPTC_TABLE_MISS_DROP
6158 * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do?
6160 rule
= rule_dpif_miss_rule(ctx
->ofproto
, &ctx
->xin
->flow
);
6162 if (rule
&& ctx
->xin
->resubmit_stats
) {
6163 rule_credit_stats(rule
, ctx
->xin
->resubmit_stats
);
6169 xlate_table_action(struct xlate_ctx
*ctx
,
6170 uint16_t in_port
, uint8_t table_id
, bool may_packet_in
)
6172 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
6173 struct rule_dpif
*rule
;
6174 uint16_t old_in_port
= ctx
->xin
->flow
.in_port
;
6175 uint8_t old_table_id
= ctx
->table_id
;
6177 ctx
->table_id
= table_id
;
6179 /* Look up a flow with 'in_port' as the input port. */
6180 ctx
->xin
->flow
.in_port
= in_port
;
6181 rule
= rule_dpif_lookup__(ctx
->ofproto
, &ctx
->xin
->flow
,
6182 &ctx
->xout
->wc
, table_id
);
6184 tag_the_flow(ctx
, rule
);
6186 /* Restore the original input port. Otherwise OFPP_NORMAL and
6187 * OFPP_IN_PORT will have surprising behavior. */
6188 ctx
->xin
->flow
.in_port
= old_in_port
;
6190 rule
= ctx_rule_hooks(ctx
, rule
, may_packet_in
);
6193 struct rule_dpif
*old_rule
= ctx
->rule
;
6197 do_xlate_actions(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, ctx
);
6198 ctx
->rule
= old_rule
;
6202 ctx
->table_id
= old_table_id
;
6204 static struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
6206 VLOG_ERR_RL(&recurse_rl
, "resubmit actions recursed over %d times",
6207 MAX_RESUBMIT_RECURSION
);
6208 ctx
->max_resubmit_trigger
= true;
6213 xlate_ofpact_resubmit(struct xlate_ctx
*ctx
,
6214 const struct ofpact_resubmit
*resubmit
)
6219 in_port
= resubmit
->in_port
;
6220 if (in_port
== OFPP_IN_PORT
) {
6221 in_port
= ctx
->xin
->flow
.in_port
;
6224 table_id
= resubmit
->table_id
;
6225 if (table_id
== 255) {
6226 table_id
= ctx
->table_id
;
6229 xlate_table_action(ctx
, in_port
, table_id
, false);
6233 flood_packets(struct xlate_ctx
*ctx
, bool all
)
6235 struct ofport_dpif
*ofport
;
6237 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ctx
->ofproto
->up
.ports
) {
6238 uint16_t ofp_port
= ofport
->up
.ofp_port
;
6240 if (ofp_port
== ctx
->xin
->flow
.in_port
) {
6245 compose_output_action__(ctx
, ofp_port
, false);
6246 } else if (!(ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
)) {
6247 compose_output_action(ctx
, ofp_port
);
6251 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
6255 execute_controller_action(struct xlate_ctx
*ctx
, int len
,
6256 enum ofp_packet_in_reason reason
,
6257 uint16_t controller_id
)
6259 struct ofputil_packet_in pin
;
6260 struct ofpbuf
*packet
;
6263 ovs_assert(!ctx
->xout
->slow
|| ctx
->xout
->slow
== SLOW_CONTROLLER
);
6264 ctx
->xout
->slow
= SLOW_CONTROLLER
;
6265 if (!ctx
->xin
->packet
) {
6269 packet
= ofpbuf_clone(ctx
->xin
->packet
);
6271 key
.skb_priority
= 0;
6273 memset(&key
.tunnel
, 0, sizeof key
.tunnel
);
6275 commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
6276 &ctx
->xout
->odp_actions
);
6278 odp_execute_actions(NULL
, packet
, &key
, ctx
->xout
->odp_actions
.data
,
6279 ctx
->xout
->odp_actions
.size
, NULL
, NULL
);
6281 pin
.packet
= packet
->data
;
6282 pin
.packet_len
= packet
->size
;
6283 pin
.reason
= reason
;
6284 pin
.controller_id
= controller_id
;
6285 pin
.table_id
= ctx
->table_id
;
6286 pin
.cookie
= ctx
->rule
? ctx
->rule
->up
.flow_cookie
: 0;
6289 flow_get_metadata(&ctx
->xin
->flow
, &pin
.fmd
);
6291 connmgr_send_packet_in(ctx
->ofproto
->up
.connmgr
, &pin
);
6292 ofpbuf_delete(packet
);
6296 execute_mpls_push_action(struct xlate_ctx
*ctx
, ovs_be16 eth_type
)
6298 ovs_assert(eth_type_mpls(eth_type
));
6300 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6301 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6302 memset(&ctx
->xout
->wc
.masks
.mpls_lse
, 0xff,
6303 sizeof ctx
->xout
->wc
.masks
.mpls_lse
);
6304 memset(&ctx
->xout
->wc
.masks
.mpls_depth
, 0xff,
6305 sizeof ctx
->xout
->wc
.masks
.mpls_depth
);
6307 if (ctx
->base_flow
.mpls_depth
) {
6308 ctx
->xin
->flow
.mpls_lse
&= ~htonl(MPLS_BOS_MASK
);
6309 ctx
->xin
->flow
.mpls_depth
++;
6314 if (ctx
->xin
->flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
6315 label
= htonl(0x2); /* IPV6 Explicit Null. */
6317 label
= htonl(0x0); /* IPV4 Explicit Null. */
6319 tc
= (ctx
->xin
->flow
.nw_tos
& IP_DSCP_MASK
) >> 2;
6320 ttl
= ctx
->xin
->flow
.nw_ttl
? ctx
->xin
->flow
.nw_ttl
: 0x40;
6321 ctx
->xin
->flow
.mpls_lse
= set_mpls_lse_values(ttl
, tc
, 1, label
);
6322 ctx
->xin
->flow
.mpls_depth
= 1;
6324 ctx
->xin
->flow
.dl_type
= eth_type
;
6328 execute_mpls_pop_action(struct xlate_ctx
*ctx
, ovs_be16 eth_type
)
6330 ovs_assert(eth_type_mpls(ctx
->xin
->flow
.dl_type
));
6331 ovs_assert(!eth_type_mpls(eth_type
));
6333 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6334 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6335 memset(&ctx
->xout
->wc
.masks
.mpls_lse
, 0xff,
6336 sizeof ctx
->xout
->wc
.masks
.mpls_lse
);
6337 memset(&ctx
->xout
->wc
.masks
.mpls_depth
, 0xff,
6338 sizeof ctx
->xout
->wc
.masks
.mpls_depth
);
6340 if (ctx
->xin
->flow
.mpls_depth
) {
6341 ctx
->xin
->flow
.mpls_depth
--;
6342 ctx
->xin
->flow
.mpls_lse
= htonl(0);
6343 if (!ctx
->xin
->flow
.mpls_depth
) {
6344 ctx
->xin
->flow
.dl_type
= eth_type
;
6350 compose_dec_ttl(struct xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
6352 if (ctx
->xin
->flow
.dl_type
!= htons(ETH_TYPE_IP
) &&
6353 ctx
->xin
->flow
.dl_type
!= htons(ETH_TYPE_IPV6
)) {
6357 if (ctx
->xin
->flow
.nw_ttl
> 1) {
6358 ctx
->xin
->flow
.nw_ttl
--;
6363 for (i
= 0; i
< ids
->n_controllers
; i
++) {
6364 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
6368 /* Stop processing for current table. */
6374 execute_set_mpls_ttl_action(struct xlate_ctx
*ctx
, uint8_t ttl
)
6376 if (!eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
6380 set_mpls_lse_ttl(&ctx
->xin
->flow
.mpls_lse
, ttl
);
6385 execute_dec_mpls_ttl_action(struct xlate_ctx
*ctx
)
6387 uint8_t ttl
= mpls_lse_to_ttl(ctx
->xin
->flow
.mpls_lse
);
6389 if (!eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
6395 set_mpls_lse_ttl(&ctx
->xin
->flow
.mpls_lse
, ttl
);
6398 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
6400 /* Stop processing for current table. */
6406 xlate_output_action(struct xlate_ctx
*ctx
,
6407 uint16_t port
, uint16_t max_len
, bool may_packet_in
)
6409 uint16_t prev_nf_output_iface
= ctx
->xout
->nf_output_iface
;
6411 ctx
->xout
->nf_output_iface
= NF_OUT_DROP
;
6415 compose_output_action(ctx
, ctx
->xin
->flow
.in_port
);
6418 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
, 0, may_packet_in
);
6424 flood_packets(ctx
, false);
6427 flood_packets(ctx
, true);
6429 case OFPP_CONTROLLER
:
6430 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
6436 if (port
!= ctx
->xin
->flow
.in_port
) {
6437 compose_output_action(ctx
, port
);
6439 xlate_report(ctx
, "skipping output to input port");
6444 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
6445 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
6446 } else if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
6447 ctx
->xout
->nf_output_iface
= prev_nf_output_iface
;
6448 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
6449 ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
6450 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
6455 xlate_output_reg_action(struct xlate_ctx
*ctx
,
6456 const struct ofpact_output_reg
*or)
6458 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->xin
->flow
);
6459 if (port
<= UINT16_MAX
) {
6460 union mf_subvalue value
;
6462 memset(&value
, 0xff, sizeof value
);
6463 mf_write_subfield_flow(&or->src
, &value
, &ctx
->xout
->wc
.masks
);
6464 xlate_output_action(ctx
, port
, or->max_len
, false);
6469 xlate_enqueue_action(struct xlate_ctx
*ctx
,
6470 const struct ofpact_enqueue
*enqueue
)
6472 uint16_t ofp_port
= enqueue
->port
;
6473 uint32_t queue_id
= enqueue
->queue
;
6474 uint32_t flow_priority
, priority
;
6477 /* Translate queue to priority. */
6478 error
= dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
6479 queue_id
, &priority
);
6481 /* Fall back to ordinary output action. */
6482 xlate_output_action(ctx
, enqueue
->port
, 0, false);
6486 /* Check output port. */
6487 if (ofp_port
== OFPP_IN_PORT
) {
6488 ofp_port
= ctx
->xin
->flow
.in_port
;
6489 } else if (ofp_port
== ctx
->xin
->flow
.in_port
) {
6493 /* Add datapath actions. */
6494 flow_priority
= ctx
->xin
->flow
.skb_priority
;
6495 ctx
->xin
->flow
.skb_priority
= priority
;
6496 compose_output_action(ctx
, ofp_port
);
6497 ctx
->xin
->flow
.skb_priority
= flow_priority
;
6499 /* Update NetFlow output port. */
6500 if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
6501 ctx
->xout
->nf_output_iface
= ofp_port
;
6502 } else if (ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
6503 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
6508 xlate_set_queue_action(struct xlate_ctx
*ctx
, uint32_t queue_id
)
6510 uint32_t skb_priority
;
6512 if (!dpif_queue_to_priority(ctx
->ofproto
->backer
->dpif
,
6513 queue_id
, &skb_priority
)) {
6514 ctx
->xin
->flow
.skb_priority
= skb_priority
;
6516 /* Couldn't translate queue to a priority. Nothing to do. A warning
6517 * has already been logged. */
6522 slave_enabled_cb(uint16_t ofp_port
, void *ofproto_
)
6524 struct ofproto_dpif
*ofproto
= ofproto_
;
6525 struct ofport_dpif
*port
;
6535 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
6538 port
= get_ofp_port(ofproto
, ofp_port
);
6539 return port
? port
->may_enable
: false;
6544 xlate_bundle_action(struct xlate_ctx
*ctx
,
6545 const struct ofpact_bundle
*bundle
)
6549 port
= bundle_execute(bundle
, &ctx
->xin
->flow
, &ctx
->xout
->wc
,
6550 slave_enabled_cb
, ctx
->ofproto
);
6551 if (bundle
->dst
.field
) {
6552 nxm_reg_load(&bundle
->dst
, port
, &ctx
->xin
->flow
);
6554 xlate_output_action(ctx
, port
, 0, false);
6559 xlate_learn_action(struct xlate_ctx
*ctx
,
6560 const struct ofpact_learn
*learn
)
6562 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 1);
6563 struct ofputil_flow_mod fm
;
6564 uint64_t ofpacts_stub
[1024 / 8];
6565 struct ofpbuf ofpacts
;
6568 ctx
->xout
->has_learn
= true;
6570 learn_mask(learn
, &ctx
->xout
->wc
);
6572 if (!ctx
->xin
->may_learn
) {
6576 ofpbuf_use_stack(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
6577 learn_execute(learn
, &ctx
->xin
->flow
, &fm
, &ofpacts
);
6579 error
= ofproto_flow_mod(&ctx
->ofproto
->up
, &fm
);
6580 if (error
&& !VLOG_DROP_WARN(&rl
)) {
6581 VLOG_WARN("learning action failed to modify flow table (%s)",
6582 ofperr_get_name(error
));
6585 ofpbuf_uninit(&ofpacts
);
6588 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
6589 * means "infinite". */
6591 reduce_timeout(uint16_t max
, uint16_t *timeout
)
6593 if (max
&& (!*timeout
|| *timeout
> max
)) {
6599 xlate_fin_timeout(struct xlate_ctx
*ctx
,
6600 const struct ofpact_fin_timeout
*oft
)
6602 if (ctx
->xin
->tcp_flags
& (TCP_FIN
| TCP_RST
) && ctx
->rule
) {
6603 struct rule_dpif
*rule
= ctx
->rule
;
6605 reduce_timeout(oft
->fin_idle_timeout
, &rule
->up
.idle_timeout
);
6606 reduce_timeout(oft
->fin_hard_timeout
, &rule
->up
.hard_timeout
);
6611 xlate_sample_action(struct xlate_ctx
*ctx
,
6612 const struct ofpact_sample
*os
)
6614 union user_action_cookie cookie
;
6615 /* Scale the probability from 16-bit to 32-bit while representing
6616 * the same percentage. */
6617 uint32_t probability
= (os
->probability
<< 16) | os
->probability
;
6619 commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
6620 &ctx
->xout
->odp_actions
);
6622 compose_flow_sample_cookie(os
->probability
, os
->collector_set_id
,
6623 os
->obs_domain_id
, os
->obs_point_id
, &cookie
);
6624 compose_sample_action(ctx
->ofproto
, &ctx
->xout
->odp_actions
, &ctx
->xin
->flow
,
6625 probability
, &cookie
, sizeof cookie
.flow_sample
);
6629 may_receive(const struct ofport_dpif
*port
, struct xlate_ctx
*ctx
)
6631 if (port
->up
.pp
.config
& (eth_addr_equals(ctx
->xin
->flow
.dl_dst
,
6633 ? OFPUTIL_PC_NO_RECV_STP
6634 : OFPUTIL_PC_NO_RECV
)) {
6638 /* Only drop packets here if both forwarding and learning are
6639 * disabled. If just learning is enabled, we need to have
6640 * OFPP_NORMAL and the learning action have a look at the packet
6641 * before we can drop it. */
6642 if (!stp_forward_in_state(port
->stp_state
)
6643 && !stp_learn_in_state(port
->stp_state
)) {
6651 tunnel_ecn_ok(struct xlate_ctx
*ctx
)
6653 if (is_ip_any(&ctx
->base_flow
)
6654 && (ctx
->xin
->flow
.tunnel
.ip_tos
& IP_ECN_MASK
) == IP_ECN_CE
) {
6655 if ((ctx
->base_flow
.nw_tos
& IP_ECN_MASK
) == IP_ECN_NOT_ECT
) {
6656 VLOG_WARN_RL(&rl
, "dropping tunnel packet marked ECN CE"
6657 " but is not ECN capable");
6660 /* Set the ECN CE value in the tunneled packet. */
6661 ctx
->xin
->flow
.nw_tos
|= IP_ECN_CE
;
6669 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
6670 struct xlate_ctx
*ctx
)
6672 bool was_evictable
= true;
6673 const struct ofpact
*a
;
6676 /* Don't let the rule we're working on get evicted underneath us. */
6677 was_evictable
= ctx
->rule
->up
.evictable
;
6678 ctx
->rule
->up
.evictable
= false;
6681 do_xlate_actions_again
:
6682 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
6683 struct ofpact_controller
*controller
;
6684 const struct ofpact_metadata
*metadata
;
6692 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
6693 ofpact_get_OUTPUT(a
)->max_len
, true);
6696 case OFPACT_CONTROLLER
:
6697 controller
= ofpact_get_CONTROLLER(a
);
6698 execute_controller_action(ctx
, controller
->max_len
,
6700 controller
->controller_id
);
6703 case OFPACT_ENQUEUE
:
6704 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
6707 case OFPACT_SET_VLAN_VID
:
6708 ctx
->xin
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
6709 ctx
->xin
->flow
.vlan_tci
|=
6710 (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
6714 case OFPACT_SET_VLAN_PCP
:
6715 ctx
->xin
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
6716 ctx
->xin
->flow
.vlan_tci
|=
6717 htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
<< VLAN_PCP_SHIFT
)
6721 case OFPACT_STRIP_VLAN
:
6722 ctx
->xin
->flow
.vlan_tci
= htons(0);
6725 case OFPACT_PUSH_VLAN
:
6726 /* XXX 802.1AD(QinQ) */
6727 ctx
->xin
->flow
.vlan_tci
= htons(VLAN_CFI
);
6730 case OFPACT_SET_ETH_SRC
:
6731 memcpy(ctx
->xin
->flow
.dl_src
, ofpact_get_SET_ETH_SRC(a
)->mac
,
6735 case OFPACT_SET_ETH_DST
:
6736 memcpy(ctx
->xin
->flow
.dl_dst
, ofpact_get_SET_ETH_DST(a
)->mac
,
6740 case OFPACT_SET_IPV4_SRC
:
6741 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6742 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6743 if (ctx
->xin
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6744 ctx
->xin
->flow
.nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
6748 case OFPACT_SET_IPV4_DST
:
6749 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6750 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6751 if (ctx
->xin
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6752 ctx
->xin
->flow
.nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
6756 case OFPACT_SET_IPV4_DSCP
:
6757 /* OpenFlow 1.0 only supports IPv4. */
6758 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6759 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6760 if (ctx
->xin
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
6761 ctx
->xin
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
6762 ctx
->xin
->flow
.nw_tos
|= ofpact_get_SET_IPV4_DSCP(a
)->dscp
;
6766 case OFPACT_SET_L4_SRC_PORT
:
6767 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6768 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6769 memset(&ctx
->xout
->wc
.masks
.nw_proto
, 0xff,
6770 sizeof ctx
->xout
->wc
.masks
.nw_proto
);
6771 if (is_ip_any(&ctx
->xin
->flow
)) {
6772 ctx
->xin
->flow
.tp_src
=
6773 htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
6777 case OFPACT_SET_L4_DST_PORT
:
6778 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6779 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6780 memset(&ctx
->xout
->wc
.masks
.nw_proto
, 0xff,
6781 sizeof ctx
->xout
->wc
.masks
.nw_proto
);
6782 if (is_ip_any(&ctx
->xin
->flow
)) {
6783 ctx
->xin
->flow
.tp_dst
=
6784 htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
6788 case OFPACT_RESUBMIT
:
6789 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
6792 case OFPACT_SET_TUNNEL
:
6793 ctx
->xin
->flow
.tunnel
.tun_id
=
6794 htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
6797 case OFPACT_SET_QUEUE
:
6798 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
6801 case OFPACT_POP_QUEUE
:
6802 memset(&ctx
->xout
->wc
.masks
.skb_priority
, 0xff,
6803 sizeof ctx
->xout
->wc
.masks
.skb_priority
);
6805 ctx
->xin
->flow
.skb_priority
= ctx
->orig_skb_priority
;
6808 case OFPACT_REG_MOVE
:
6809 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), &ctx
->xin
->flow
,
6813 case OFPACT_REG_LOAD
:
6814 nxm_execute_reg_load(ofpact_get_REG_LOAD(a
), &ctx
->xin
->flow
);
6817 case OFPACT_STACK_PUSH
:
6818 nxm_execute_stack_push(ofpact_get_STACK_PUSH(a
), &ctx
->xin
->flow
,
6819 &ctx
->xout
->wc
, &ctx
->stack
);
6822 case OFPACT_STACK_POP
:
6823 nxm_execute_stack_pop(ofpact_get_STACK_POP(a
), &ctx
->xin
->flow
,
6827 case OFPACT_PUSH_MPLS
:
6828 execute_mpls_push_action(ctx
, ofpact_get_PUSH_MPLS(a
)->ethertype
);
6831 case OFPACT_POP_MPLS
:
6832 execute_mpls_pop_action(ctx
, ofpact_get_POP_MPLS(a
)->ethertype
);
6835 case OFPACT_SET_MPLS_TTL
:
6836 if (execute_set_mpls_ttl_action(ctx
,
6837 ofpact_get_SET_MPLS_TTL(a
)->ttl
)) {
6842 case OFPACT_DEC_MPLS_TTL
:
6843 if (execute_dec_mpls_ttl_action(ctx
)) {
6848 case OFPACT_DEC_TTL
:
6849 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6850 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6851 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
6857 /* Nothing to do. */
6860 case OFPACT_MULTIPATH
:
6861 multipath_execute(ofpact_get_MULTIPATH(a
), &ctx
->xin
->flow
,
6866 ctx
->ofproto
->has_bundle_action
= true;
6867 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
6870 case OFPACT_OUTPUT_REG
:
6871 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
6875 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
6882 case OFPACT_FIN_TIMEOUT
:
6883 memset(&ctx
->xout
->wc
.masks
.dl_type
, 0xff,
6884 sizeof ctx
->xout
->wc
.masks
.dl_type
);
6885 memset(&ctx
->xout
->wc
.masks
.nw_proto
, 0xff,
6886 sizeof ctx
->xout
->wc
.masks
.nw_proto
);
6887 ctx
->xout
->has_fin_timeout
= true;
6888 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
6891 case OFPACT_CLEAR_ACTIONS
:
6893 * Nothing to do because writa-actions is not supported for now.
6894 * When writa-actions is supported, clear-actions also must
6895 * be supported at the same time.
6899 case OFPACT_WRITE_METADATA
:
6900 metadata
= ofpact_get_WRITE_METADATA(a
);
6901 ctx
->xin
->flow
.metadata
&= ~metadata
->mask
;
6902 ctx
->xin
->flow
.metadata
|= metadata
->metadata
& metadata
->mask
;
6905 case OFPACT_GOTO_TABLE
: {
6906 /* It is assumed that goto-table is the last action. */
6907 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
6908 struct rule_dpif
*rule
;
6910 ovs_assert(ctx
->table_id
< ogt
->table_id
);
6912 ctx
->table_id
= ogt
->table_id
;
6914 /* Look up a flow from the new table. */
6915 rule
= rule_dpif_lookup__(ctx
->ofproto
, &ctx
->xin
->flow
,
6916 &ctx
->xout
->wc
, ctx
->table_id
);
6918 tag_the_flow(ctx
, rule
);
6920 rule
= ctx_rule_hooks(ctx
, rule
, true);
6924 ctx
->rule
->up
.evictable
= was_evictable
;
6927 was_evictable
= rule
->up
.evictable
;
6928 rule
->up
.evictable
= false;
6930 /* Tail recursion removal. */
6931 ofpacts
= rule
->up
.ofpacts
;
6932 ofpacts_len
= rule
->up
.ofpacts_len
;
6933 goto do_xlate_actions_again
;
6939 xlate_sample_action(ctx
, ofpact_get_SAMPLE(a
));
6946 ctx
->rule
->up
.evictable
= was_evictable
;
6951 xlate_in_init(struct xlate_in
*xin
, struct ofproto_dpif
*ofproto
,
6952 const struct flow
*flow
,
6953 const struct initial_vals
*initial_vals
,
6954 struct rule_dpif
*rule
, uint8_t tcp_flags
,
6955 const struct ofpbuf
*packet
)
6957 xin
->ofproto
= ofproto
;
6959 xin
->packet
= packet
;
6960 xin
->may_learn
= packet
!= NULL
;
6962 xin
->ofpacts
= NULL
;
6963 xin
->ofpacts_len
= 0;
6964 xin
->tcp_flags
= tcp_flags
;
6965 xin
->resubmit_hook
= NULL
;
6966 xin
->report_hook
= NULL
;
6967 xin
->resubmit_stats
= NULL
;
6970 xin
->initial_vals
= *initial_vals
;
6972 xin
->initial_vals
.vlan_tci
= xin
->flow
.vlan_tci
;
6977 xlate_out_uninit(struct xlate_out
*xout
)
6980 ofpbuf_uninit(&xout
->odp_actions
);
6984 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
6985 * into datapath actions in 'odp_actions', using 'ctx'. */
6987 xlate_actions(struct xlate_in
*xin
, struct xlate_out
*xout
)
6989 /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
6990 * that in the future we always keep a copy of the original flow for
6991 * tracing purposes. */
6992 static bool hit_resubmit_limit
;
6994 enum slow_path_reason special
;
6995 const struct ofpact
*ofpacts
;
6996 struct ofport_dpif
*in_port
;
6997 struct flow orig_flow
;
6998 struct xlate_ctx ctx
;
7001 COVERAGE_INC(ofproto_dpif_xlate
);
7003 /* Flow initialization rules:
7004 * - 'base_flow' must match the kernel's view of the packet at the
7005 * time that action processing starts. 'flow' represents any
7006 * transformations we wish to make through actions.
7007 * - By default 'base_flow' and 'flow' are the same since the input
7008 * packet matches the output before any actions are applied.
7009 * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
7010 * of the received packet as seen by the kernel. If we later output
7011 * to another device without any modifications this will cause us to
7012 * insert a new tag since the original one was stripped off by the
7014 * - Tunnel metadata as received is retained in 'flow'. This allows
7015 * tunnel metadata matching also in later tables.
7016 * Since a kernel action for setting the tunnel metadata will only be
7017 * generated with actual tunnel output, changing the tunnel metadata
7018 * values in 'flow' (such as tun_id) will only have effect with a later
7019 * tunnel output action.
7020 * - Tunnel 'base_flow' is completely cleared since that is what the
7021 * kernel does. If we wish to maintain the original values an action
7022 * needs to be generated. */
7027 ctx
.ofproto
= xin
->ofproto
;
7028 ctx
.rule
= xin
->rule
;
7030 ctx
.base_flow
= ctx
.xin
->flow
;
7031 ctx
.base_flow
.vlan_tci
= xin
->initial_vals
.vlan_tci
;
7032 memset(&ctx
.base_flow
.tunnel
, 0, sizeof ctx
.base_flow
.tunnel
);
7033 ctx
.orig_tunnel_ip_dst
= ctx
.xin
->flow
.tunnel
.ip_dst
;
7035 flow_wildcards_init_catchall(&ctx
.xout
->wc
);
7036 memset(&ctx
.xout
->wc
.masks
.in_port
, 0xff,
7037 sizeof ctx
.xout
->wc
.masks
.in_port
);
7039 if (tnl_port_should_receive(&ctx
.xin
->flow
)) {
7040 memset(&ctx
.xout
->wc
.masks
.tunnel
, 0xff,
7041 sizeof ctx
.xout
->wc
.masks
.tunnel
);
7044 /* Disable most wildcarding for NetFlow. */
7045 if (xin
->ofproto
->netflow
) {
7046 memset(&ctx
.xout
->wc
.masks
.dl_src
, 0xff,
7047 sizeof ctx
.xout
->wc
.masks
.dl_src
);
7048 memset(&ctx
.xout
->wc
.masks
.dl_dst
, 0xff,
7049 sizeof ctx
.xout
->wc
.masks
.dl_dst
);
7050 memset(&ctx
.xout
->wc
.masks
.dl_type
, 0xff,
7051 sizeof ctx
.xout
->wc
.masks
.dl_type
);
7052 memset(&ctx
.xout
->wc
.masks
.vlan_tci
, 0xff,
7053 sizeof ctx
.xout
->wc
.masks
.vlan_tci
);
7054 memset(&ctx
.xout
->wc
.masks
.nw_proto
, 0xff,
7055 sizeof ctx
.xout
->wc
.masks
.nw_proto
);
7056 memset(&ctx
.xout
->wc
.masks
.nw_src
, 0xff,
7057 sizeof ctx
.xout
->wc
.masks
.nw_src
);
7058 memset(&ctx
.xout
->wc
.masks
.nw_dst
, 0xff,
7059 sizeof ctx
.xout
->wc
.masks
.nw_dst
);
7060 memset(&ctx
.xout
->wc
.masks
.tp_src
, 0xff,
7061 sizeof ctx
.xout
->wc
.masks
.tp_src
);
7062 memset(&ctx
.xout
->wc
.masks
.tp_dst
, 0xff,
7063 sizeof ctx
.xout
->wc
.masks
.tp_dst
);
7068 ctx
.xout
->has_learn
= false;
7069 ctx
.xout
->has_normal
= false;
7070 ctx
.xout
->has_fin_timeout
= false;
7071 ctx
.xout
->nf_output_iface
= NF_OUT_DROP
;
7072 ctx
.xout
->mirrors
= 0;
7074 ofpbuf_use_stub(&ctx
.xout
->odp_actions
, ctx
.xout
->odp_actions_stub
,
7075 sizeof ctx
.xout
->odp_actions_stub
);
7076 ofpbuf_reserve(&ctx
.xout
->odp_actions
, NL_A_U32_SIZE
);
7079 ctx
.max_resubmit_trigger
= false;
7080 ctx
.orig_skb_priority
= ctx
.xin
->flow
.skb_priority
;
7085 ofpacts
= xin
->ofpacts
;
7086 ofpacts_len
= xin
->ofpacts_len
;
7087 } else if (xin
->rule
) {
7088 ofpacts
= xin
->rule
->up
.ofpacts
;
7089 ofpacts_len
= xin
->rule
->up
.ofpacts_len
;
7094 ofpbuf_use_stub(&ctx
.stack
, ctx
.init_stack
, sizeof ctx
.init_stack
);
7096 if (ctx
.ofproto
->has_mirrors
|| hit_resubmit_limit
) {
7097 /* Do this conditionally because the copy is expensive enough that it
7098 * shows up in profiles. */
7099 orig_flow
= ctx
.xin
->flow
;
7102 if (ctx
.xin
->flow
.nw_frag
& FLOW_NW_FRAG_ANY
) {
7103 switch (ctx
.ofproto
->up
.frag_handling
) {
7104 case OFPC_FRAG_NORMAL
:
7105 /* We must pretend that transport ports are unavailable. */
7106 ctx
.xin
->flow
.tp_src
= ctx
.base_flow
.tp_src
= htons(0);
7107 ctx
.xin
->flow
.tp_dst
= ctx
.base_flow
.tp_dst
= htons(0);
7110 case OFPC_FRAG_DROP
:
7113 case OFPC_FRAG_REASM
:
7116 case OFPC_FRAG_NX_MATCH
:
7117 /* Nothing to do. */
7120 case OFPC_INVALID_TTL_TO_CONTROLLER
:
7125 in_port
= get_ofp_port(ctx
.ofproto
, ctx
.xin
->flow
.in_port
);
7126 special
= process_special(ctx
.ofproto
, &ctx
.xin
->flow
, in_port
,
7129 ctx
.xout
->slow
= special
;
7131 static struct vlog_rate_limit trace_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
7132 struct initial_vals initial_vals
;
7133 size_t sample_actions_len
;
7134 uint32_t local_odp_port
;
7136 initial_vals
.vlan_tci
= ctx
.base_flow
.vlan_tci
;
7138 add_sflow_action(&ctx
);
7139 add_ipfix_action(&ctx
);
7140 sample_actions_len
= ctx
.xout
->odp_actions
.size
;
7142 if (tunnel_ecn_ok(&ctx
) && (!in_port
|| may_receive(in_port
, &ctx
))) {
7143 do_xlate_actions(ofpacts
, ofpacts_len
, &ctx
);
7145 /* We've let OFPP_NORMAL and the learning action look at the
7146 * packet, so drop it now if forwarding is disabled. */
7147 if (in_port
&& !stp_forward_in_state(in_port
->stp_state
)) {
7148 ctx
.xout
->odp_actions
.size
= sample_actions_len
;
7152 if (ctx
.max_resubmit_trigger
&& !ctx
.xin
->resubmit_hook
) {
7153 if (!hit_resubmit_limit
) {
7154 /* We didn't record the original flow. Make sure we do from
7156 hit_resubmit_limit
= true;
7157 } else if (!VLOG_DROP_ERR(&trace_rl
)) {
7158 struct ds ds
= DS_EMPTY_INITIALIZER
;
7160 ofproto_trace(ctx
.ofproto
, &orig_flow
, ctx
.xin
->packet
,
7161 &initial_vals
, &ds
);
7162 VLOG_ERR("Trace triggered by excessive resubmit "
7163 "recursion:\n%s", ds_cstr(&ds
));
7168 local_odp_port
= ofp_port_to_odp_port(ctx
.ofproto
, OFPP_LOCAL
);
7169 if (!connmgr_must_output_local(ctx
.ofproto
->up
.connmgr
, &ctx
.xin
->flow
,
7171 ctx
.xout
->odp_actions
.data
,
7172 ctx
.xout
->odp_actions
.size
)) {
7173 compose_output_action(&ctx
, OFPP_LOCAL
);
7175 if (ctx
.ofproto
->has_mirrors
) {
7176 add_mirror_actions(&ctx
, &orig_flow
);
7178 fix_sflow_action(&ctx
);
7181 ofpbuf_uninit(&ctx
.stack
);
7183 /* Clear the metadata and register wildcard masks, because we won't
7184 * use non-header fields as part of the cache. */
7185 memset(&ctx
.xout
->wc
.masks
.metadata
, 0,
7186 sizeof ctx
.xout
->wc
.masks
.metadata
);
7187 memset(&ctx
.xout
->wc
.masks
.regs
, 0, sizeof ctx
.xout
->wc
.masks
.regs
);
7190 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
7191 * into datapath actions, using 'ctx', and discards the datapath actions. */
7193 xlate_actions_for_side_effects(struct xlate_in
*xin
)
7195 struct xlate_out xout
;
7197 xlate_actions(xin
, &xout
);
7198 xlate_out_uninit(&xout
);
7202 xlate_report(struct xlate_ctx
*ctx
, const char *s
)
7204 if (ctx
->xin
->report_hook
) {
7205 ctx
->xin
->report_hook(ctx
, s
);
7210 xlate_out_copy(struct xlate_out
*dst
, const struct xlate_out
*src
)
7213 dst
->tags
= src
->tags
;
7214 dst
->slow
= src
->slow
;
7215 dst
->has_learn
= src
->has_learn
;
7216 dst
->has_normal
= src
->has_normal
;
7217 dst
->has_fin_timeout
= src
->has_fin_timeout
;
7218 dst
->nf_output_iface
= src
->nf_output_iface
;
7219 dst
->mirrors
= src
->mirrors
;
7221 ofpbuf_use_stub(&dst
->odp_actions
, dst
->odp_actions_stub
,
7222 sizeof dst
->odp_actions_stub
);
7223 ofpbuf_put(&dst
->odp_actions
, src
->odp_actions
.data
,
7224 src
->odp_actions
.size
);
7227 /* OFPP_NORMAL implementation. */
7229 static struct ofport_dpif
*ofbundle_get_a_port(const struct ofbundle
*);
7231 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
7232 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
7233 * the bundle on which the packet was received, returns the VLAN to which the
7236 * Both 'vid' and the return value are in the range 0...4095. */
7238 input_vid_to_vlan(const struct ofbundle
*in_bundle
, uint16_t vid
)
7240 switch (in_bundle
->vlan_mode
) {
7241 case PORT_VLAN_ACCESS
:
7242 return in_bundle
->vlan
;
7245 case PORT_VLAN_TRUNK
:
7248 case PORT_VLAN_NATIVE_UNTAGGED
:
7249 case PORT_VLAN_NATIVE_TAGGED
:
7250 return vid
? vid
: in_bundle
->vlan
;
7257 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
7258 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
7261 * 'vid' should be the VID obtained from the 802.1Q header that was received as
7262 * part of a packet (specify 0 if there was no 802.1Q header), in the range
7265 input_vid_is_valid(uint16_t vid
, struct ofbundle
*in_bundle
, bool warn
)
7267 /* Allow any VID on the OFPP_NONE port. */
7268 if (in_bundle
== &ofpp_none_bundle
) {
7272 switch (in_bundle
->vlan_mode
) {
7273 case PORT_VLAN_ACCESS
:
7276 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7277 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" tagged "
7278 "packet received on port %s configured as VLAN "
7279 "%"PRIu16
" access port",
7280 in_bundle
->ofproto
->up
.name
, vid
,
7281 in_bundle
->name
, in_bundle
->vlan
);
7287 case PORT_VLAN_NATIVE_UNTAGGED
:
7288 case PORT_VLAN_NATIVE_TAGGED
:
7290 /* Port must always carry its native VLAN. */
7294 case PORT_VLAN_TRUNK
:
7295 if (!ofbundle_includes_vlan(in_bundle
, vid
)) {
7297 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7298 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" packet "
7299 "received on port %s not configured for trunking "
7301 in_bundle
->ofproto
->up
.name
, vid
,
7302 in_bundle
->name
, vid
);
7314 /* Given 'vlan', the VLAN that a packet belongs to, and
7315 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
7316 * that should be included in the 802.1Q header. (If the return value is 0,
7317 * then the 802.1Q header should only be included in the packet if there is a
7320 * Both 'vlan' and the return value are in the range 0...4095. */
7322 output_vlan_to_vid(const struct ofbundle
*out_bundle
, uint16_t vlan
)
7324 switch (out_bundle
->vlan_mode
) {
7325 case PORT_VLAN_ACCESS
:
7328 case PORT_VLAN_TRUNK
:
7329 case PORT_VLAN_NATIVE_TAGGED
:
7332 case PORT_VLAN_NATIVE_UNTAGGED
:
7333 return vlan
== out_bundle
->vlan
? 0 : vlan
;
7341 output_normal(struct xlate_ctx
*ctx
, const struct ofbundle
*out_bundle
,
7344 struct ofport_dpif
*port
;
7346 ovs_be16 tci
, old_tci
;
7348 vid
= output_vlan_to_vid(out_bundle
, vlan
);
7349 if (!out_bundle
->bond
) {
7350 port
= ofbundle_get_a_port(out_bundle
);
7352 port
= bond_choose_output_slave(out_bundle
->bond
, &ctx
->xin
->flow
,
7353 &ctx
->xout
->wc
, vid
, &ctx
->xout
->tags
);
7355 /* No slaves enabled, so drop packet. */
7360 old_tci
= ctx
->xin
->flow
.vlan_tci
;
7362 if (tci
|| out_bundle
->use_priority_tags
) {
7363 tci
|= ctx
->xin
->flow
.vlan_tci
& htons(VLAN_PCP_MASK
);
7365 tci
|= htons(VLAN_CFI
);
7368 ctx
->xin
->flow
.vlan_tci
= tci
;
7370 compose_output_action(ctx
, port
->up
.ofp_port
);
7371 ctx
->xin
->flow
.vlan_tci
= old_tci
;
7375 mirror_mask_ffs(mirror_mask_t mask
)
7377 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask
));
7382 ofbundle_trunks_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
7384 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
7385 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
7389 ofbundle_includes_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
7391 return vlan
== bundle
->vlan
|| ofbundle_trunks_vlan(bundle
, vlan
);
7394 /* Returns an arbitrary interface within 'bundle'. */
7395 static struct ofport_dpif
*
7396 ofbundle_get_a_port(const struct ofbundle
*bundle
)
7398 return CONTAINER_OF(list_front(&bundle
->ports
),
7399 struct ofport_dpif
, bundle_node
);
7403 vlan_is_mirrored(const struct ofmirror
*m
, int vlan
)
7405 return !m
->vlans
|| bitmap_is_set(m
->vlans
, vlan
);
7409 add_mirror_actions(struct xlate_ctx
*ctx
, const struct flow
*orig_flow
)
7411 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
7412 mirror_mask_t mirrors
;
7413 struct ofbundle
*in_bundle
;
7416 const struct nlattr
*a
;
7419 in_bundle
= lookup_input_bundle(ctx
->ofproto
, orig_flow
->in_port
,
7420 ctx
->xin
->packet
!= NULL
, NULL
);
7424 mirrors
= in_bundle
->src_mirrors
;
7426 /* Drop frames on bundles reserved for mirroring. */
7427 if (in_bundle
->mirror_out
) {
7428 if (ctx
->xin
->packet
!= NULL
) {
7429 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7430 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
7431 "%s, which is reserved exclusively for mirroring",
7432 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7438 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
7439 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->xin
->packet
!= NULL
)) {
7442 vlan
= input_vid_to_vlan(in_bundle
, vid
);
7444 /* Look at the output ports to check for destination selections. */
7446 NL_ATTR_FOR_EACH (a
, left
, ctx
->xout
->odp_actions
.data
,
7447 ctx
->xout
->odp_actions
.size
) {
7448 enum ovs_action_attr type
= nl_attr_type(a
);
7449 struct ofport_dpif
*ofport
;
7451 if (type
!= OVS_ACTION_ATTR_OUTPUT
) {
7455 ofport
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
7456 if (ofport
&& ofport
->bundle
) {
7457 mirrors
|= ofport
->bundle
->dst_mirrors
;
7465 /* Restore the original packet before adding the mirror actions. */
7466 ctx
->xin
->flow
= *orig_flow
;
7471 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
7474 ctx
->xout
->wc
.masks
.vlan_tci
|= htons(VLAN_CFI
| VLAN_VID_MASK
);
7477 if (!vlan_is_mirrored(m
, vlan
)) {
7478 mirrors
= zero_rightmost_1bit(mirrors
);
7482 mirrors
&= ~m
->dup_mirrors
;
7483 ctx
->xout
->mirrors
|= m
->dup_mirrors
;
7485 output_normal(ctx
, m
->out
, vlan
);
7486 } else if (vlan
!= m
->out_vlan
7487 && !eth_addr_is_reserved(orig_flow
->dl_dst
)) {
7488 struct ofbundle
*bundle
;
7490 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
7491 if (ofbundle_includes_vlan(bundle
, m
->out_vlan
)
7492 && !bundle
->mirror_out
) {
7493 output_normal(ctx
, bundle
, m
->out_vlan
);
7501 update_mirror_stats(struct ofproto_dpif
*ofproto
, mirror_mask_t mirrors
,
7502 uint64_t packets
, uint64_t bytes
)
7508 for (; mirrors
; mirrors
= zero_rightmost_1bit(mirrors
)) {
7511 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
7514 /* In normal circumstances 'm' will not be NULL. However,
7515 * if mirrors are reconfigured, we can temporarily get out
7516 * of sync in facet_revalidate(). We could "correct" the
7517 * mirror list before reaching here, but doing that would
7518 * not properly account the traffic stats we've currently
7519 * accumulated for previous mirror configuration. */
7523 m
->packet_count
+= packets
;
7524 m
->byte_count
+= bytes
;
7528 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
7529 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
7530 * indicate this; newer upstream kernels use gratuitous ARP requests. */
7532 is_gratuitous_arp(const struct flow
*flow
, struct flow_wildcards
*wc
)
7534 memset(&wc
->masks
.dl_type
, 0xff, sizeof wc
->masks
.dl_type
);
7535 if (flow
->dl_type
!= htons(ETH_TYPE_ARP
)) {
7539 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
7540 if (!eth_addr_is_broadcast(flow
->dl_dst
)) {
7544 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
7545 if (flow
->nw_proto
== ARP_OP_REPLY
) {
7547 } else if (flow
->nw_proto
== ARP_OP_REQUEST
) {
7548 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
7549 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
7551 return flow
->nw_src
== flow
->nw_dst
;
7558 update_learning_table(struct ofproto_dpif
*ofproto
,
7559 const struct flow
*flow
, struct flow_wildcards
*wc
,
7560 int vlan
, struct ofbundle
*in_bundle
)
7562 struct mac_entry
*mac
;
7564 /* Don't learn the OFPP_NONE port. */
7565 if (in_bundle
== &ofpp_none_bundle
) {
7569 if (!mac_learning_may_learn(ofproto
->ml
, flow
->dl_src
, vlan
)) {
7573 mac
= mac_learning_insert(ofproto
->ml
, flow
->dl_src
, vlan
);
7574 if (is_gratuitous_arp(flow
, wc
)) {
7575 /* We don't want to learn from gratuitous ARP packets that are
7576 * reflected back over bond slaves so we lock the learning table. */
7577 if (!in_bundle
->bond
) {
7578 mac_entry_set_grat_arp_lock(mac
);
7579 } else if (mac_entry_is_grat_arp_locked(mac
)) {
7584 if (mac_entry_is_new(mac
) || mac
->port
.p
!= in_bundle
) {
7585 /* The log messages here could actually be useful in debugging,
7586 * so keep the rate limit relatively high. */
7587 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
7588 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
7589 "on port %s in VLAN %d",
7590 ofproto
->up
.name
, ETH_ADDR_ARGS(flow
->dl_src
),
7591 in_bundle
->name
, vlan
);
7593 mac
->port
.p
= in_bundle
;
7594 tag_set_add(&ofproto
->backer
->revalidate_set
,
7595 mac_learning_changed(ofproto
->ml
, mac
));
7599 static struct ofbundle
*
7600 lookup_input_bundle(const struct ofproto_dpif
*ofproto
, uint16_t in_port
,
7601 bool warn
, struct ofport_dpif
**in_ofportp
)
7603 struct ofport_dpif
*ofport
;
7605 /* Find the port and bundle for the received packet. */
7606 ofport
= get_ofp_port(ofproto
, in_port
);
7608 *in_ofportp
= ofport
;
7610 if (ofport
&& ofport
->bundle
) {
7611 return ofport
->bundle
;
7614 /* Special-case OFPP_NONE, which a controller may use as the ingress
7615 * port for traffic that it is sourcing. */
7616 if (in_port
== OFPP_NONE
) {
7617 return &ofpp_none_bundle
;
7620 /* Odd. A few possible reasons here:
7622 * - We deleted a port but there are still a few packets queued up
7625 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
7626 * we don't know about.
7628 * - The ofproto client didn't configure the port as part of a bundle.
7629 * This is particularly likely to happen if a packet was received on the
7630 * port after it was created, but before the client had a chance to
7631 * configure its bundle.
7634 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7636 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
7637 "port %"PRIu16
, ofproto
->up
.name
, in_port
);
7642 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
7643 * dropped. Returns true if they may be forwarded, false if they should be
7646 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
7647 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
7649 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
7650 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
7651 * checked by input_vid_is_valid().
7653 * May also add tags to '*tags', although the current implementation only does
7654 * so in one special case.
7657 is_admissible(struct xlate_ctx
*ctx
, struct ofport_dpif
*in_port
,
7660 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
7661 struct flow
*flow
= &ctx
->xin
->flow
;
7662 struct ofbundle
*in_bundle
= in_port
->bundle
;
7664 /* Drop frames for reserved multicast addresses
7665 * only if forward_bpdu option is absent. */
7666 if (!ofproto
->up
.forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
7667 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
7671 if (in_bundle
->bond
) {
7672 struct mac_entry
*mac
;
7674 switch (bond_check_admissibility(in_bundle
->bond
, in_port
,
7675 flow
->dl_dst
, &ctx
->xout
->tags
)) {
7680 xlate_report(ctx
, "bonding refused admissibility, dropping");
7683 case BV_DROP_IF_MOVED
:
7684 mac
= mac_learning_lookup(ofproto
->ml
, flow
->dl_src
, vlan
, NULL
);
7685 if (mac
&& mac
->port
.p
!= in_bundle
&&
7686 (!is_gratuitous_arp(flow
, &ctx
->xout
->wc
)
7687 || mac_entry_is_grat_arp_locked(mac
))) {
7688 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
7700 xlate_normal(struct xlate_ctx
*ctx
)
7702 struct ofport_dpif
*in_port
;
7703 struct ofbundle
*in_bundle
;
7704 struct mac_entry
*mac
;
7708 ctx
->xout
->has_normal
= true;
7710 memset(&ctx
->xout
->wc
.masks
.dl_src
, 0xff,
7711 sizeof ctx
->xout
->wc
.masks
.dl_src
);
7712 memset(&ctx
->xout
->wc
.masks
.dl_dst
, 0xff,
7713 sizeof ctx
->xout
->wc
.masks
.dl_dst
);
7714 memset(&ctx
->xout
->wc
.masks
.vlan_tci
, 0xff,
7715 sizeof ctx
->xout
->wc
.masks
.vlan_tci
);
7717 in_bundle
= lookup_input_bundle(ctx
->ofproto
, ctx
->xin
->flow
.in_port
,
7718 ctx
->xin
->packet
!= NULL
, &in_port
);
7720 xlate_report(ctx
, "no input bundle, dropping");
7724 /* Drop malformed frames. */
7725 if (ctx
->xin
->flow
.dl_type
== htons(ETH_TYPE_VLAN
) &&
7726 !(ctx
->xin
->flow
.vlan_tci
& htons(VLAN_CFI
))) {
7727 if (ctx
->xin
->packet
!= NULL
) {
7728 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7729 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
7730 "VLAN tag received on port %s",
7731 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7733 xlate_report(ctx
, "partial VLAN tag, dropping");
7737 /* Drop frames on bundles reserved for mirroring. */
7738 if (in_bundle
->mirror_out
) {
7739 if (ctx
->xin
->packet
!= NULL
) {
7740 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
7741 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
7742 "%s, which is reserved exclusively for mirroring",
7743 ctx
->ofproto
->up
.name
, in_bundle
->name
);
7745 xlate_report(ctx
, "input port is mirror output port, dropping");
7750 vid
= vlan_tci_to_vid(ctx
->xin
->flow
.vlan_tci
);
7751 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->xin
->packet
!= NULL
)) {
7752 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
7755 vlan
= input_vid_to_vlan(in_bundle
, vid
);
7757 /* Check other admissibility requirements. */
7758 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
7762 /* Learn source MAC. */
7763 if (ctx
->xin
->may_learn
) {
7764 update_learning_table(ctx
->ofproto
, &ctx
->xin
->flow
, &ctx
->xout
->wc
,
7768 /* Determine output bundle. */
7769 mac
= mac_learning_lookup(ctx
->ofproto
->ml
, ctx
->xin
->flow
.dl_dst
, vlan
,
7772 if (mac
->port
.p
!= in_bundle
) {
7773 xlate_report(ctx
, "forwarding to learned port");
7774 output_normal(ctx
, mac
->port
.p
, vlan
);
7776 xlate_report(ctx
, "learned port is input port, dropping");
7779 struct ofbundle
*bundle
;
7781 xlate_report(ctx
, "no learned MAC for destination, flooding");
7782 HMAP_FOR_EACH (bundle
, hmap_node
, &ctx
->ofproto
->bundles
) {
7783 if (bundle
!= in_bundle
7784 && ofbundle_includes_vlan(bundle
, vlan
)
7785 && bundle
->floodable
7786 && !bundle
->mirror_out
) {
7787 output_normal(ctx
, bundle
, vlan
);
7790 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
7794 /* Optimized flow revalidation.
7796 * It's a difficult problem, in general, to tell which facets need to have
7797 * their actions recalculated whenever the OpenFlow flow table changes. We
7798 * don't try to solve that general problem: for most kinds of OpenFlow flow
7799 * table changes, we recalculate the actions for every facet. This is
7800 * relatively expensive, but it's good enough if the OpenFlow flow table
7801 * doesn't change very often.
7803 * However, we can expect one particular kind of OpenFlow flow table change to
7804 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
7805 * of CPU on revalidating every facet whenever MAC learning modifies the flow
7806 * table, we add a special case that applies to flow tables in which every rule
7807 * has the same form (that is, the same wildcards), except that the table is
7808 * also allowed to have a single "catch-all" flow that matches all packets. We
7809 * optimize this case by tagging all of the facets that resubmit into the table
7810 * and invalidating the same tag whenever a flow changes in that table. The
7811 * end result is that we revalidate just the facets that need it (and sometimes
7812 * a few more, but not all of the facets or even all of the facets that
7813 * resubmit to the table modified by MAC learning). */
7815 /* Calculates the tag to use for 'flow' and mask 'mask' when it is inserted
7816 * into an OpenFlow table with the given 'basis'. */
7818 rule_calculate_tag(const struct flow
*flow
, const struct minimask
*mask
,
7821 if (minimask_is_catchall(mask
)) {
7824 uint32_t hash
= flow_hash_in_minimask(flow
, mask
, secret
);
7825 return tag_create_deterministic(hash
);
7829 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
7830 * taggability of that table.
7832 * This function must be called after *each* change to a flow table. If you
7833 * skip calling it on some changes then the pointer comparisons at the end can
7834 * be invalid if you get unlucky. For example, if a flow removal causes a
7835 * cls_table to be destroyed and then a flow insertion causes a cls_table with
7836 * different wildcards to be created with the same address, then this function
7837 * will incorrectly skip revalidation. */
7839 table_update_taggable(struct ofproto_dpif
*ofproto
, uint8_t table_id
)
7841 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
7842 const struct oftable
*oftable
= &ofproto
->up
.tables
[table_id
];
7843 struct cls_table
*catchall
, *other
;
7844 struct cls_table
*t
;
7846 catchall
= other
= NULL
;
7848 switch (hmap_count(&oftable
->cls
.tables
)) {
7850 /* We could tag this OpenFlow table but it would make the logic a
7851 * little harder and it's a corner case that doesn't seem worth it
7857 HMAP_FOR_EACH (t
, hmap_node
, &oftable
->cls
.tables
) {
7858 if (cls_table_is_catchall(t
)) {
7860 } else if (!other
) {
7863 /* Indicate that we can't tag this by setting both tables to
7864 * NULL. (We know that 'catchall' is already NULL.) */
7871 /* Can't tag this table. */
7875 if (table
->catchall_table
!= catchall
|| table
->other_table
!= other
) {
7876 table
->catchall_table
= catchall
;
7877 table
->other_table
= other
;
7878 ofproto
->backer
->need_revalidate
= REV_FLOW_TABLE
;
7882 /* Given 'rule' that has changed in some way (either it is a rule being
7883 * inserted, a rule being deleted, or a rule whose actions are being
7884 * modified), marks facets for revalidation to ensure that packets will be
7885 * forwarded correctly according to the new state of the flow table.
7887 * This function must be called after *each* change to a flow table. See
7888 * the comment on table_update_taggable() for more information. */
7890 rule_invalidate(const struct rule_dpif
*rule
)
7892 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
7894 table_update_taggable(ofproto
, rule
->up
.table_id
);
7896 if (!ofproto
->backer
->need_revalidate
) {
7897 struct table_dpif
*table
= &ofproto
->tables
[rule
->up
.table_id
];
7899 if (table
->other_table
&& rule
->tag
) {
7900 tag_set_add(&ofproto
->backer
->revalidate_set
, rule
->tag
);
7902 ofproto
->backer
->need_revalidate
= REV_FLOW_TABLE
;
7908 set_frag_handling(struct ofproto
*ofproto_
,
7909 enum ofp_config_flags frag_handling
)
7911 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7912 if (frag_handling
!= OFPC_FRAG_REASM
) {
7913 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
7921 packet_out(struct ofproto
*ofproto_
, struct ofpbuf
*packet
,
7922 const struct flow
*flow
,
7923 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
7925 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7926 struct initial_vals initial_vals
;
7927 struct odputil_keybuf keybuf
;
7928 struct dpif_flow_stats stats
;
7929 struct xlate_out xout
;
7930 struct xlate_in xin
;
7934 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
7935 odp_flow_key_from_flow(&key
, flow
,
7936 ofp_port_to_odp_port(ofproto
, flow
->in_port
));
7938 dpif_flow_stats_extract(flow
, packet
, time_msec(), &stats
);
7940 initial_vals
.vlan_tci
= flow
->vlan_tci
;
7941 xlate_in_init(&xin
, ofproto
, flow
, &initial_vals
, NULL
, stats
.tcp_flags
,
7943 xin
.resubmit_stats
= &stats
;
7944 xin
.ofpacts_len
= ofpacts_len
;
7945 xin
.ofpacts
= ofpacts
;
7947 xlate_actions(&xin
, &xout
);
7948 dpif_execute(ofproto
->backer
->dpif
, key
.data
, key
.size
,
7949 xout
.odp_actions
.data
, xout
.odp_actions
.size
, packet
);
7950 xlate_out_uninit(&xout
);
7958 set_netflow(struct ofproto
*ofproto_
,
7959 const struct netflow_options
*netflow_options
)
7961 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7963 if (netflow_options
) {
7964 if (!ofproto
->netflow
) {
7965 ofproto
->netflow
= netflow_create();
7967 return netflow_set_options(ofproto
->netflow
, netflow_options
);
7969 netflow_destroy(ofproto
->netflow
);
7970 ofproto
->netflow
= NULL
;
7976 get_netflow_ids(const struct ofproto
*ofproto_
,
7977 uint8_t *engine_type
, uint8_t *engine_id
)
7979 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
7981 dpif_get_netflow_ids(ofproto
->backer
->dpif
, engine_type
, engine_id
);
7985 send_active_timeout(struct ofproto_dpif
*ofproto
, struct facet
*facet
)
7987 if (!facet_is_controller_flow(facet
) &&
7988 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
7989 struct subfacet
*subfacet
;
7990 struct ofexpired expired
;
7992 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
7993 if (subfacet
->path
== SF_FAST_PATH
) {
7994 struct dpif_flow_stats stats
;
7996 subfacet_install(subfacet
, &facet
->xout
.odp_actions
,
7998 subfacet_update_stats(subfacet
, &stats
);
8002 expired
.flow
= facet
->flow
;
8003 expired
.packet_count
= facet
->packet_count
;
8004 expired
.byte_count
= facet
->byte_count
;
8005 expired
.used
= facet
->used
;
8006 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
8011 send_netflow_active_timeouts(struct ofproto_dpif
*ofproto
)
8013 struct cls_cursor cursor
;
8014 struct facet
*facet
;
8016 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
8017 CLS_CURSOR_FOR_EACH (facet
, cr
, &cursor
) {
8018 send_active_timeout(ofproto
, facet
);
8022 static struct ofproto_dpif
*
8023 ofproto_dpif_lookup(const char *name
)
8025 struct ofproto_dpif
*ofproto
;
8027 HMAP_FOR_EACH_WITH_HASH (ofproto
, all_ofproto_dpifs_node
,
8028 hash_string(name
, 0), &all_ofproto_dpifs
) {
8029 if (!strcmp(ofproto
->up
.name
, name
)) {
8037 ofproto_unixctl_fdb_flush(struct unixctl_conn
*conn
, int argc
,
8038 const char *argv
[], void *aux OVS_UNUSED
)
8040 struct ofproto_dpif
*ofproto
;
8043 ofproto
= ofproto_dpif_lookup(argv
[1]);
8045 unixctl_command_reply_error(conn
, "no such bridge");
8048 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
8050 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8051 mac_learning_flush(ofproto
->ml
, &ofproto
->backer
->revalidate_set
);
8055 unixctl_command_reply(conn
, "table successfully flushed");
8059 ofproto_unixctl_fdb_show(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
8060 const char *argv
[], void *aux OVS_UNUSED
)
8062 struct ds ds
= DS_EMPTY_INITIALIZER
;
8063 const struct ofproto_dpif
*ofproto
;
8064 const struct mac_entry
*e
;
8066 ofproto
= ofproto_dpif_lookup(argv
[1]);
8068 unixctl_command_reply_error(conn
, "no such bridge");
8072 ds_put_cstr(&ds
, " port VLAN MAC Age\n");
8073 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
8074 struct ofbundle
*bundle
= e
->port
.p
;
8075 ds_put_format(&ds
, "%5d %4d "ETH_ADDR_FMT
" %3d\n",
8076 ofbundle_get_a_port(bundle
)->odp_port
,
8077 e
->vlan
, ETH_ADDR_ARGS(e
->mac
),
8078 mac_entry_age(ofproto
->ml
, e
));
8080 unixctl_command_reply(conn
, ds_cstr(&ds
));
8085 struct xlate_out xout
;
8086 struct xlate_in xin
;
8092 trace_format_rule(struct ds
*result
, uint8_t table_id
, int level
,
8093 const struct rule_dpif
*rule
)
8095 ds_put_char_multiple(result
, '\t', level
);
8097 ds_put_cstr(result
, "No match\n");
8101 ds_put_format(result
, "Rule: table=%"PRIu8
" cookie=%#"PRIx64
" ",
8102 table_id
, ntohll(rule
->up
.flow_cookie
));
8103 cls_rule_format(&rule
->up
.cr
, result
);
8104 ds_put_char(result
, '\n');
8106 ds_put_char_multiple(result
, '\t', level
);
8107 ds_put_cstr(result
, "OpenFlow ");
8108 ofpacts_format(rule
->up
.ofpacts
, rule
->up
.ofpacts_len
, result
);
8109 ds_put_char(result
, '\n');
8113 trace_format_flow(struct ds
*result
, int level
, const char *title
,
8114 struct trace_ctx
*trace
)
8116 ds_put_char_multiple(result
, '\t', level
);
8117 ds_put_format(result
, "%s: ", title
);
8118 if (flow_equal(&trace
->xin
.flow
, &trace
->flow
)) {
8119 ds_put_cstr(result
, "unchanged");
8121 flow_format(result
, &trace
->xin
.flow
);
8122 trace
->flow
= trace
->xin
.flow
;
8124 ds_put_char(result
, '\n');
8128 trace_format_regs(struct ds
*result
, int level
, const char *title
,
8129 struct trace_ctx
*trace
)
8133 ds_put_char_multiple(result
, '\t', level
);
8134 ds_put_format(result
, "%s:", title
);
8135 for (i
= 0; i
< FLOW_N_REGS
; i
++) {
8136 ds_put_format(result
, " reg%zu=0x%"PRIx32
, i
, trace
->flow
.regs
[i
]);
8138 ds_put_char(result
, '\n');
8142 trace_format_odp(struct ds
*result
, int level
, const char *title
,
8143 struct trace_ctx
*trace
)
8145 struct ofpbuf
*odp_actions
= &trace
->xout
.odp_actions
;
8147 ds_put_char_multiple(result
, '\t', level
);
8148 ds_put_format(result
, "%s: ", title
);
8149 format_odp_actions(result
, odp_actions
->data
, odp_actions
->size
);
8150 ds_put_char(result
, '\n');
8154 trace_resubmit(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
)
8156 struct trace_ctx
*trace
= CONTAINER_OF(ctx
->xin
, struct trace_ctx
, xin
);
8157 struct ds
*result
= trace
->result
;
8159 ds_put_char(result
, '\n');
8160 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
8161 trace_format_regs(result
, ctx
->recurse
+ 1, "Resubmitted regs", trace
);
8162 trace_format_odp(result
, ctx
->recurse
+ 1, "Resubmitted odp", trace
);
8163 trace_format_rule(result
, ctx
->table_id
, ctx
->recurse
+ 1, rule
);
8167 trace_report(struct xlate_ctx
*ctx
, const char *s
)
8169 struct trace_ctx
*trace
= CONTAINER_OF(ctx
->xin
, struct trace_ctx
, xin
);
8170 struct ds
*result
= trace
->result
;
8172 ds_put_char_multiple(result
, '\t', ctx
->recurse
);
8173 ds_put_cstr(result
, s
);
8174 ds_put_char(result
, '\n');
8178 ofproto_unixctl_trace(struct unixctl_conn
*conn
, int argc
, const char *argv
[],
8179 void *aux OVS_UNUSED
)
8181 const struct dpif_backer
*backer
;
8182 struct ofproto_dpif
*ofproto
;
8183 struct ofpbuf odp_key
;
8184 struct ofpbuf
*packet
;
8185 struct initial_vals initial_vals
;
8193 ofpbuf_init(&odp_key
, 0);
8195 /* Handle "-generate" or a hex string as the last argument. */
8196 if (!strcmp(argv
[argc
- 1], "-generate")) {
8197 packet
= ofpbuf_new(0);
8200 const char *error
= eth_from_hex(argv
[argc
- 1], &packet
);
8203 } else if (argc
== 4) {
8204 /* The 3-argument form must end in "-generate' or a hex string. */
8205 unixctl_command_reply_error(conn
, error
);
8210 /* Parse the flow and determine whether a datapath or
8211 * bridge is specified. If function odp_flow_key_from_string()
8212 * returns 0, the flow is a odp_flow. If function
8213 * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
8214 if (!odp_flow_key_from_string(argv
[argc
- 1], NULL
, &odp_key
)) {
8215 /* If the odp_flow is the second argument,
8216 * the datapath name is the first argument. */
8218 const char *dp_type
;
8219 if (!strncmp(argv
[1], "ovs-", 4)) {
8220 dp_type
= argv
[1] + 4;
8224 backer
= shash_find_data(&all_dpif_backers
, dp_type
);
8226 unixctl_command_reply_error(conn
, "Cannot find datapath "
8231 /* No datapath name specified, so there should be only one
8233 struct shash_node
*node
;
8234 if (shash_count(&all_dpif_backers
) != 1) {
8235 unixctl_command_reply_error(conn
, "Must specify datapath "
8236 "name, there is more than one type of datapath");
8239 node
= shash_first(&all_dpif_backers
);
8240 backer
= node
->data
;
8243 /* Extract the ofproto_dpif object from the ofproto_receive()
8245 if (ofproto_receive(backer
, NULL
, odp_key
.data
,
8246 odp_key
.size
, &flow
, NULL
, &ofproto
, NULL
,
8248 unixctl_command_reply_error(conn
, "Invalid datapath flow");
8251 ds_put_format(&result
, "Bridge: %s\n", ofproto
->up
.name
);
8252 } else if (!parse_ofp_exact_flow(&flow
, argv
[argc
- 1])) {
8254 unixctl_command_reply_error(conn
, "Must specify bridge name");
8258 ofproto
= ofproto_dpif_lookup(argv
[1]);
8260 unixctl_command_reply_error(conn
, "Unknown bridge name");
8263 initial_vals
.vlan_tci
= flow
.vlan_tci
;
8265 unixctl_command_reply_error(conn
, "Bad flow syntax");
8269 /* Generate a packet, if requested. */
8271 if (!packet
->size
) {
8272 flow_compose(packet
, &flow
);
8274 ds_put_cstr(&result
, "Packet: ");
8275 s
= ofp_packet_to_string(packet
->data
, packet
->size
);
8276 ds_put_cstr(&result
, s
);
8279 /* Use the metadata from the flow and the packet argument
8280 * to reconstruct the flow. */
8281 flow_extract(packet
, flow
.skb_priority
, flow
.skb_mark
, NULL
,
8282 flow
.in_port
, &flow
);
8283 initial_vals
.vlan_tci
= flow
.vlan_tci
;
8287 ofproto_trace(ofproto
, &flow
, packet
, &initial_vals
, &result
);
8288 unixctl_command_reply(conn
, ds_cstr(&result
));
8291 ds_destroy(&result
);
8292 ofpbuf_delete(packet
);
8293 ofpbuf_uninit(&odp_key
);
8297 ofproto_trace(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
8298 const struct ofpbuf
*packet
,
8299 const struct initial_vals
*initial_vals
, struct ds
*ds
)
8301 struct rule_dpif
*rule
;
8303 ds_put_cstr(ds
, "Flow: ");
8304 flow_format(ds
, flow
);
8305 ds_put_char(ds
, '\n');
8307 rule
= rule_dpif_lookup(ofproto
, flow
, NULL
);
8309 trace_format_rule(ds
, 0, 0, rule
);
8310 if (rule
== ofproto
->miss_rule
) {
8311 ds_put_cstr(ds
, "\nNo match, flow generates \"packet in\"s.\n");
8312 } else if (rule
== ofproto
->no_packet_in_rule
) {
8313 ds_put_cstr(ds
, "\nNo match, packets dropped because "
8314 "OFPPC_NO_PACKET_IN is set on in_port.\n");
8315 } else if (rule
== ofproto
->drop_frags_rule
) {
8316 ds_put_cstr(ds
, "\nPackets dropped because they are IP fragments "
8317 "and the fragment handling mode is \"drop\".\n");
8321 uint64_t odp_actions_stub
[1024 / 8];
8322 struct ofpbuf odp_actions
;
8323 struct trace_ctx trace
;
8327 tcp_flags
= packet
? packet_get_tcp_flags(packet
, flow
) : 0;
8330 ofpbuf_use_stub(&odp_actions
,
8331 odp_actions_stub
, sizeof odp_actions_stub
);
8332 xlate_in_init(&trace
.xin
, ofproto
, flow
, initial_vals
, rule
, tcp_flags
,
8334 trace
.xin
.resubmit_hook
= trace_resubmit
;
8335 trace
.xin
.report_hook
= trace_report
;
8337 xlate_actions(&trace
.xin
, &trace
.xout
);
8339 ds_put_char(ds
, '\n');
8340 trace_format_flow(ds
, 0, "Final flow", &trace
);
8342 match_init(&match
, flow
, &trace
.xout
.wc
);
8343 ds_put_cstr(ds
, "Relevant fields: ");
8344 match_format(&match
, ds
, OFP_DEFAULT_PRIORITY
);
8345 ds_put_char(ds
, '\n');
8347 ds_put_cstr(ds
, "Datapath actions: ");
8348 format_odp_actions(ds
, trace
.xout
.odp_actions
.data
,
8349 trace
.xout
.odp_actions
.size
);
8351 if (trace
.xout
.slow
) {
8352 ds_put_cstr(ds
, "\nThis flow is handled by the userspace "
8353 "slow path because it:");
8354 switch (trace
.xout
.slow
) {
8356 ds_put_cstr(ds
, "\n\t- Consists of CFM packets.");
8359 ds_put_cstr(ds
, "\n\t- Consists of LACP packets.");
8362 ds_put_cstr(ds
, "\n\t- Consists of STP packets.");
8365 ds_put_cstr(ds
, "\n\t- Consists of BFD packets.");
8367 case SLOW_CONTROLLER
:
8368 ds_put_cstr(ds
, "\n\t- Sends \"packet-in\" messages "
8369 "to the OpenFlow controller.");
8376 xlate_out_uninit(&trace
.xout
);
8381 ofproto_dpif_clog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
8382 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
8385 unixctl_command_reply(conn
, NULL
);
8389 ofproto_dpif_unclog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
8390 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
8393 unixctl_command_reply(conn
, NULL
);
8396 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
8397 * 'reply' describing the results. */
8399 ofproto_dpif_self_check__(struct ofproto_dpif
*ofproto
, struct ds
*reply
)
8401 struct cls_cursor cursor
;
8402 struct facet
*facet
;
8406 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
8407 CLS_CURSOR_FOR_EACH (facet
, cr
, &cursor
) {
8408 if (!facet_check_consistency(facet
)) {
8413 ofproto
->backer
->need_revalidate
= REV_INCONSISTENCY
;
8417 ds_put_format(reply
, "%s: self-check failed (%d errors)\n",
8418 ofproto
->up
.name
, errors
);
8420 ds_put_format(reply
, "%s: self-check passed\n", ofproto
->up
.name
);
8425 ofproto_dpif_self_check(struct unixctl_conn
*conn
,
8426 int argc
, const char *argv
[], void *aux OVS_UNUSED
)
8428 struct ds reply
= DS_EMPTY_INITIALIZER
;
8429 struct ofproto_dpif
*ofproto
;
8432 ofproto
= ofproto_dpif_lookup(argv
[1]);
8434 unixctl_command_reply_error(conn
, "Unknown ofproto (use "
8435 "ofproto/list for help)");
8438 ofproto_dpif_self_check__(ofproto
, &reply
);
8440 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8441 ofproto_dpif_self_check__(ofproto
, &reply
);
8445 unixctl_command_reply(conn
, ds_cstr(&reply
));
8449 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
8450 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
8451 * to destroy 'ofproto_shash' and free the returned value. */
8452 static const struct shash_node
**
8453 get_ofprotos(struct shash
*ofproto_shash
)
8455 const struct ofproto_dpif
*ofproto
;
8457 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8458 char *name
= xasprintf("%s@%s", ofproto
->up
.type
, ofproto
->up
.name
);
8459 shash_add_nocopy(ofproto_shash
, name
, ofproto
);
8462 return shash_sort(ofproto_shash
);
8466 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
8467 const char *argv
[] OVS_UNUSED
,
8468 void *aux OVS_UNUSED
)
8470 struct ds ds
= DS_EMPTY_INITIALIZER
;
8471 struct shash ofproto_shash
;
8472 const struct shash_node
**sorted_ofprotos
;
8475 shash_init(&ofproto_shash
);
8476 sorted_ofprotos
= get_ofprotos(&ofproto_shash
);
8477 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
8478 const struct shash_node
*node
= sorted_ofprotos
[i
];
8479 ds_put_format(&ds
, "%s\n", node
->name
);
8482 shash_destroy(&ofproto_shash
);
8483 free(sorted_ofprotos
);
8485 unixctl_command_reply(conn
, ds_cstr(&ds
));
8490 show_dp_rates(struct ds
*ds
, const char *heading
,
8491 const struct avg_subfacet_rates
*rates
)
8493 ds_put_format(ds
, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
8494 heading
, rates
->add_rate
, rates
->del_rate
);
8498 dpif_show_backer(const struct dpif_backer
*backer
, struct ds
*ds
)
8500 const struct shash_node
**ofprotos
;
8501 struct ofproto_dpif
*ofproto
;
8502 struct shash ofproto_shash
;
8503 uint64_t n_hit
, n_missed
;
8504 long long int minutes
;
8507 n_hit
= n_missed
= 0;
8508 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
8509 if (ofproto
->backer
== backer
) {
8510 n_missed
+= ofproto
->n_missed
;
8511 n_hit
+= ofproto
->n_hit
;
8515 ds_put_format(ds
, "%s: hit:%"PRIu64
" missed:%"PRIu64
"\n",
8516 dpif_name(backer
->dpif
), n_hit
, n_missed
);
8517 ds_put_format(ds
, "\tflows: cur: %zu, avg: %u, max: %u,"
8518 " life span: %lldms\n", hmap_count(&backer
->subfacets
),
8519 backer
->avg_n_subfacet
, backer
->max_n_subfacet
,
8520 backer
->avg_subfacet_life
);
8522 minutes
= (time_msec() - backer
->created
) / (1000 * 60);
8523 if (minutes
>= 60) {
8524 show_dp_rates(ds
, "\thourly avg:", &backer
->hourly
);
8526 if (minutes
>= 60 * 24) {
8527 show_dp_rates(ds
, "\tdaily avg:", &backer
->daily
);
8529 show_dp_rates(ds
, "\toverall avg:", &backer
->lifetime
);
8531 shash_init(&ofproto_shash
);
8532 ofprotos
= get_ofprotos(&ofproto_shash
);
8533 for (i
= 0; i
< shash_count(&ofproto_shash
); i
++) {
8534 struct ofproto_dpif
*ofproto
= ofprotos
[i
]->data
;
8535 const struct shash_node
**ports
;
8538 if (ofproto
->backer
!= backer
) {
8542 ds_put_format(ds
, "\t%s: hit:%"PRIu64
" missed:%"PRIu64
"\n",
8543 ofproto
->up
.name
, ofproto
->n_hit
, ofproto
->n_missed
);
8545 ports
= shash_sort(&ofproto
->up
.port_by_name
);
8546 for (j
= 0; j
< shash_count(&ofproto
->up
.port_by_name
); j
++) {
8547 const struct shash_node
*node
= ports
[j
];
8548 struct ofport
*ofport
= node
->data
;
8552 ds_put_format(ds
, "\t\t%s %u/", netdev_get_name(ofport
->netdev
),
8555 odp_port
= ofp_port_to_odp_port(ofproto
, ofport
->ofp_port
);
8556 if (odp_port
!= OVSP_NONE
) {
8557 ds_put_format(ds
, "%"PRIu32
":", odp_port
);
8559 ds_put_cstr(ds
, "none:");
8562 ds_put_format(ds
, " (%s", netdev_get_type(ofport
->netdev
));
8565 if (!netdev_get_config(ofport
->netdev
, &config
)) {
8566 const struct smap_node
**nodes
;
8569 nodes
= smap_sort(&config
);
8570 for (i
= 0; i
< smap_count(&config
); i
++) {
8571 const struct smap_node
*node
= nodes
[i
];
8572 ds_put_format(ds
, "%c %s=%s", i
? ',' : ':',
8573 node
->key
, node
->value
);
8577 smap_destroy(&config
);
8579 ds_put_char(ds
, ')');
8580 ds_put_char(ds
, '\n');
8584 shash_destroy(&ofproto_shash
);
8589 ofproto_unixctl_dpif_show(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
8590 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
8592 struct ds ds
= DS_EMPTY_INITIALIZER
;
8593 const struct shash_node
**backers
;
8596 backers
= shash_sort(&all_dpif_backers
);
8597 for (i
= 0; i
< shash_count(&all_dpif_backers
); i
++) {
8598 dpif_show_backer(backers
[i
]->data
, &ds
);
8602 unixctl_command_reply(conn
, ds_cstr(&ds
));
8606 /* Dump the megaflow (facet) cache. This is useful to check the
8607 * correctness of flow wildcarding, since the same mechanism is used for
8608 * both xlate caching and kernel wildcarding.
8610 * It's important to note that in the output the flow description uses
8611 * OpenFlow (OFP) ports, but the actions use datapath (ODP) ports.
8613 * This command is only needed for advanced debugging, so it's not
8614 * documented in the man page. */
8616 ofproto_unixctl_dpif_dump_megaflows(struct unixctl_conn
*conn
,
8617 int argc OVS_UNUSED
, const char *argv
[],
8618 void *aux OVS_UNUSED
)
8620 struct ds ds
= DS_EMPTY_INITIALIZER
;
8621 const struct ofproto_dpif
*ofproto
;
8622 long long int now
= time_msec();
8623 struct cls_cursor cursor
;
8624 struct facet
*facet
;
8626 ofproto
= ofproto_dpif_lookup(argv
[1]);
8628 unixctl_command_reply_error(conn
, "no such bridge");
8632 cls_cursor_init(&cursor
, &ofproto
->facets
, NULL
);
8633 CLS_CURSOR_FOR_EACH (facet
, cr
, &cursor
) {
8634 cls_rule_format(&facet
->cr
, &ds
);
8635 ds_put_cstr(&ds
, ", ");
8636 ds_put_format(&ds
, "n_subfacets:%"PRIu64
", ",
8637 list_size(&facet
->subfacets
));
8638 ds_put_format(&ds
, "used:%.3fs, ", (now
- facet
->used
) / 1000.0);
8639 ds_put_cstr(&ds
, "Datapath actions: ");
8640 format_odp_actions(&ds
, facet
->xout
.odp_actions
.data
,
8641 facet
->xout
.odp_actions
.size
);
8642 ds_put_cstr(&ds
, "\n");
8645 ds_chomp(&ds
, '\n');
8646 unixctl_command_reply(conn
, ds_cstr(&ds
));
8651 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn
*conn
,
8652 int argc OVS_UNUSED
, const char *argv
[],
8653 void *aux OVS_UNUSED
)
8655 struct ds ds
= DS_EMPTY_INITIALIZER
;
8656 const struct ofproto_dpif
*ofproto
;
8657 struct subfacet
*subfacet
;
8659 ofproto
= ofproto_dpif_lookup(argv
[1]);
8661 unixctl_command_reply_error(conn
, "no such bridge");
8665 update_stats(ofproto
->backer
);
8667 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->backer
->subfacets
) {
8668 struct facet
*facet
= subfacet
->facet
;
8670 if (ofproto_dpif_cast(facet
->rule
->up
.ofproto
) != ofproto
) {
8674 odp_flow_key_format(subfacet
->key
, subfacet
->key_len
, &ds
);
8676 ds_put_format(&ds
, ", packets:%"PRIu64
", bytes:%"PRIu64
", used:",
8677 subfacet
->dp_packet_count
, subfacet
->dp_byte_count
);
8678 if (subfacet
->used
) {
8679 ds_put_format(&ds
, "%.3fs",
8680 (time_msec() - subfacet
->used
) / 1000.0);
8682 ds_put_format(&ds
, "never");
8684 if (subfacet
->facet
->tcp_flags
) {
8685 ds_put_cstr(&ds
, ", flags:");
8686 packet_format_tcp_flags(&ds
, subfacet
->facet
->tcp_flags
);
8689 ds_put_cstr(&ds
, ", actions:");
8690 if (facet
->xout
.slow
) {
8691 uint64_t slow_path_stub
[128 / 8];
8692 const struct nlattr
*actions
;
8695 compose_slow_path(ofproto
, &facet
->flow
, facet
->xout
.slow
,
8696 slow_path_stub
, sizeof slow_path_stub
,
8697 &actions
, &actions_len
);
8698 format_odp_actions(&ds
, actions
, actions_len
);
8700 format_odp_actions(&ds
, facet
->xout
.odp_actions
.data
,
8701 facet
->xout
.odp_actions
.size
);
8703 ds_put_char(&ds
, '\n');
8706 unixctl_command_reply(conn
, ds_cstr(&ds
));
8711 ofproto_unixctl_dpif_del_flows(struct unixctl_conn
*conn
,
8712 int argc OVS_UNUSED
, const char *argv
[],
8713 void *aux OVS_UNUSED
)
8715 struct ds ds
= DS_EMPTY_INITIALIZER
;
8716 struct ofproto_dpif
*ofproto
;
8718 ofproto
= ofproto_dpif_lookup(argv
[1]);
8720 unixctl_command_reply_error(conn
, "no such bridge");
8724 flush(&ofproto
->up
);
8726 unixctl_command_reply(conn
, ds_cstr(&ds
));
8731 ofproto_dpif_unixctl_init(void)
8733 static bool registered
;
8739 unixctl_command_register(
8741 "[dp_name]|bridge odp_flow|br_flow [-generate|packet]",
8742 1, 3, ofproto_unixctl_trace
, NULL
);
8743 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
8744 ofproto_unixctl_fdb_flush
, NULL
);
8745 unixctl_command_register("fdb/show", "bridge", 1, 1,
8746 ofproto_unixctl_fdb_show
, NULL
);
8747 unixctl_command_register("ofproto/clog", "", 0, 0,
8748 ofproto_dpif_clog
, NULL
);
8749 unixctl_command_register("ofproto/unclog", "", 0, 0,
8750 ofproto_dpif_unclog
, NULL
);
8751 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
8752 ofproto_dpif_self_check
, NULL
);
8753 unixctl_command_register("dpif/dump-dps", "", 0, 0,
8754 ofproto_unixctl_dpif_dump_dps
, NULL
);
8755 unixctl_command_register("dpif/show", "", 0, 0, ofproto_unixctl_dpif_show
,
8757 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
8758 ofproto_unixctl_dpif_dump_flows
, NULL
);
8759 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
8760 ofproto_unixctl_dpif_del_flows
, NULL
);
8761 unixctl_command_register("dpif/dump-megaflows", "bridge", 1, 1,
8762 ofproto_unixctl_dpif_dump_megaflows
, NULL
);
8765 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
8767 * This is deprecated. It is only for compatibility with broken device drivers
8768 * in old versions of Linux that do not properly support VLANs when VLAN
8769 * devices are not used. When broken device drivers are no longer in
8770 * widespread use, we will delete these interfaces. */
8773 set_realdev(struct ofport
*ofport_
, uint16_t realdev_ofp_port
, int vid
)
8775 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport_
->ofproto
);
8776 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
8778 if (realdev_ofp_port
== ofport
->realdev_ofp_port
8779 && vid
== ofport
->vlandev_vid
) {
8783 ofproto
->backer
->need_revalidate
= REV_RECONFIGURE
;
8785 if (ofport
->realdev_ofp_port
) {
8788 if (realdev_ofp_port
&& ofport
->bundle
) {
8789 /* vlandevs are enslaved to their realdevs, so they are not allowed to
8790 * themselves be part of a bundle. */
8791 bundle_set(ofport
->up
.ofproto
, ofport
->bundle
, NULL
);
8794 ofport
->realdev_ofp_port
= realdev_ofp_port
;
8795 ofport
->vlandev_vid
= vid
;
8797 if (realdev_ofp_port
) {
8798 vsp_add(ofport
, realdev_ofp_port
, vid
);
8805 hash_realdev_vid(uint16_t realdev_ofp_port
, int vid
)
8807 return hash_2words(realdev_ofp_port
, vid
);
8810 /* Returns the OFP port number of the Linux VLAN device that corresponds to
8811 * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
8812 * 'struct ofport_dpif'. For example, given 'realdev_ofp_port' of eth0 and
8813 * 'vlan_tci' 9, it would return the port number of eth0.9.
8815 * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
8816 * function just returns its 'realdev_ofp_port' argument. */
8818 vsp_realdev_to_vlandev(const struct ofproto_dpif
*ofproto
,
8819 uint16_t realdev_ofp_port
, ovs_be16 vlan_tci
)
8821 if (!hmap_is_empty(&ofproto
->realdev_vid_map
)) {
8822 int vid
= vlan_tci_to_vid(vlan_tci
);
8823 const struct vlan_splinter
*vsp
;
8825 HMAP_FOR_EACH_WITH_HASH (vsp
, realdev_vid_node
,
8826 hash_realdev_vid(realdev_ofp_port
, vid
),
8827 &ofproto
->realdev_vid_map
) {
8828 if (vsp
->realdev_ofp_port
== realdev_ofp_port
8829 && vsp
->vid
== vid
) {
8830 return vsp
->vlandev_ofp_port
;
8834 return realdev_ofp_port
;
8837 static struct vlan_splinter
*
8838 vlandev_find(const struct ofproto_dpif
*ofproto
, uint16_t vlandev_ofp_port
)
8840 struct vlan_splinter
*vsp
;
8842 HMAP_FOR_EACH_WITH_HASH (vsp
, vlandev_node
, hash_int(vlandev_ofp_port
, 0),
8843 &ofproto
->vlandev_map
) {
8844 if (vsp
->vlandev_ofp_port
== vlandev_ofp_port
) {
8852 /* Returns the OpenFlow port number of the "real" device underlying the Linux
8853 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
8854 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
8855 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
8856 * eth0 and store 9 in '*vid'.
8858 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
8859 * VLAN device. Unless VLAN splinters are enabled, this is what this function
8862 vsp_vlandev_to_realdev(const struct ofproto_dpif
*ofproto
,
8863 uint16_t vlandev_ofp_port
, int *vid
)
8865 if (!hmap_is_empty(&ofproto
->vlandev_map
)) {
8866 const struct vlan_splinter
*vsp
;
8868 vsp
= vlandev_find(ofproto
, vlandev_ofp_port
);
8873 return vsp
->realdev_ofp_port
;
8879 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
8880 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
8881 * 'flow->in_port' to the "real" device backing the VLAN device, sets
8882 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
8883 * always the case unless VLAN splinters are enabled), returns false without
8884 * making any changes. */
8886 vsp_adjust_flow(const struct ofproto_dpif
*ofproto
, struct flow
*flow
)
8891 realdev
= vsp_vlandev_to_realdev(ofproto
, flow
->in_port
, &vid
);
8896 /* Cause the flow to be processed as if it came in on the real device with
8897 * the VLAN device's VLAN ID. */
8898 flow
->in_port
= realdev
;
8899 flow
->vlan_tci
= htons((vid
& VLAN_VID_MASK
) | VLAN_CFI
);
8904 vsp_remove(struct ofport_dpif
*port
)
8906 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
8907 struct vlan_splinter
*vsp
;
8909 vsp
= vlandev_find(ofproto
, port
->up
.ofp_port
);
8911 hmap_remove(&ofproto
->vlandev_map
, &vsp
->vlandev_node
);
8912 hmap_remove(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
);
8915 port
->realdev_ofp_port
= 0;
8917 VLOG_ERR("missing vlan device record");
8922 vsp_add(struct ofport_dpif
*port
, uint16_t realdev_ofp_port
, int vid
)
8924 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
8926 if (!vsp_vlandev_to_realdev(ofproto
, port
->up
.ofp_port
, NULL
)
8927 && (vsp_realdev_to_vlandev(ofproto
, realdev_ofp_port
, htons(vid
))
8928 == realdev_ofp_port
)) {
8929 struct vlan_splinter
*vsp
;
8931 vsp
= xmalloc(sizeof *vsp
);
8932 hmap_insert(&ofproto
->vlandev_map
, &vsp
->vlandev_node
,
8933 hash_int(port
->up
.ofp_port
, 0));
8934 hmap_insert(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
,
8935 hash_realdev_vid(realdev_ofp_port
, vid
));
8936 vsp
->realdev_ofp_port
= realdev_ofp_port
;
8937 vsp
->vlandev_ofp_port
= port
->up
.ofp_port
;
8940 port
->realdev_ofp_port
= realdev_ofp_port
;
8942 VLOG_ERR("duplicate vlan device record");
8947 ofp_port_to_odp_port(const struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
8949 const struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
8950 return ofport
? ofport
->odp_port
: OVSP_NONE
;
8953 static struct ofport_dpif
*
8954 odp_port_to_ofport(const struct dpif_backer
*backer
, uint32_t odp_port
)
8956 struct ofport_dpif
*port
;
8958 HMAP_FOR_EACH_IN_BUCKET (port
, odp_port_node
,
8959 hash_int(odp_port
, 0),
8960 &backer
->odp_to_ofport_map
) {
8961 if (port
->odp_port
== odp_port
) {
8970 odp_port_to_ofp_port(const struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
8972 struct ofport_dpif
*port
;
8974 port
= odp_port_to_ofport(ofproto
->backer
, odp_port
);
8975 if (port
&& &ofproto
->up
== port
->up
.ofproto
) {
8976 return port
->up
.ofp_port
;
8982 /* Compute exponentially weighted moving average, adding 'new' as the newest,
8983 * most heavily weighted element. 'base' designates the rate of decay: after
8984 * 'base' further updates, 'new''s weight in the EWMA decays to about 1/e
8987 exp_mavg(double *avg
, int base
, double new)
8989 *avg
= (*avg
* (base
- 1) + new) / base
;
8993 update_moving_averages(struct dpif_backer
*backer
)
8995 const int min_ms
= 60 * 1000; /* milliseconds in one minute. */
8996 long long int minutes
= (time_msec() - backer
->created
) / min_ms
;
8999 backer
->lifetime
.add_rate
= (double) backer
->total_subfacet_add_count
9001 backer
->lifetime
.del_rate
= (double) backer
->total_subfacet_del_count
9004 backer
->lifetime
.add_rate
= 0.0;
9005 backer
->lifetime
.del_rate
= 0.0;
9008 /* Update hourly averages on the minute boundaries. */
9009 if (time_msec() - backer
->last_minute
>= min_ms
) {
9010 exp_mavg(&backer
->hourly
.add_rate
, 60, backer
->subfacet_add_count
);
9011 exp_mavg(&backer
->hourly
.del_rate
, 60, backer
->subfacet_del_count
);
9013 /* Update daily averages on the hour boundaries. */
9014 if ((backer
->last_minute
- backer
->created
) / min_ms
% 60 == 59) {
9015 exp_mavg(&backer
->daily
.add_rate
, 24, backer
->hourly
.add_rate
);
9016 exp_mavg(&backer
->daily
.del_rate
, 24, backer
->hourly
.del_rate
);
9019 backer
->total_subfacet_add_count
+= backer
->subfacet_add_count
;
9020 backer
->total_subfacet_del_count
+= backer
->subfacet_del_count
;
9021 backer
->subfacet_add_count
= 0;
9022 backer
->subfacet_del_count
= 0;
9023 backer
->last_minute
+= min_ms
;
9027 const struct ofproto_class ofproto_dpif_class
= {
9062 port_is_lacp_current
,
9063 NULL
, /* rule_choose_table */
9070 rule_modify_actions
,
9084 get_stp_port_status
,
9091 is_mirror_output_bundle
,
9092 forward_bpdu_changed
,
9093 set_mac_table_config
,