2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofproto/ofproto-provider.h"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "meta-flow.h"
38 #include "multipath.h"
45 #include "ofp-print.h"
46 #include "ofproto-dpif-governor.h"
47 #include "ofproto-dpif-sflow.h"
48 #include "poll-loop.h"
50 #include "unaligned.h"
52 #include "vlan-bitmap.h"
55 VLOG_DEFINE_THIS_MODULE(ofproto_dpif
);
57 COVERAGE_DEFINE(ofproto_dpif_ctlr_action
);
58 COVERAGE_DEFINE(ofproto_dpif_expired
);
59 COVERAGE_DEFINE(ofproto_dpif_no_packet_in
);
60 COVERAGE_DEFINE(ofproto_dpif_xlate
);
61 COVERAGE_DEFINE(facet_changed_rule
);
62 COVERAGE_DEFINE(facet_invalidated
);
63 COVERAGE_DEFINE(facet_revalidate
);
64 COVERAGE_DEFINE(facet_unexpected
);
65 COVERAGE_DEFINE(facet_suppress
);
67 /* Maximum depth of flow table recursion (due to resubmit actions) in a
68 * flow translation. */
69 #define MAX_RESUBMIT_RECURSION 32
71 /* Number of implemented OpenFlow tables. */
72 enum { N_TABLES
= 255 };
73 BUILD_ASSERT_DECL(N_TABLES
>= 1 && N_TABLES
<= 255);
83 * - Do include packets and bytes from facets that have been deleted or
84 * whose own statistics have been folded into the rule.
86 * - Do include packets and bytes sent "by hand" that were accounted to
87 * the rule without any facet being involved (this is a rare corner
88 * case in rule_execute()).
90 * - Do not include packet or bytes that can be obtained from any facet's
91 * packet_count or byte_count member or that can be obtained from the
92 * datapath by, e.g., dpif_flow_get() for any subfacet.
94 uint64_t packet_count
; /* Number of packets received. */
95 uint64_t byte_count
; /* Number of bytes received. */
97 tag_type tag
; /* Caches rule_calculate_tag() result. */
99 struct list facets
; /* List of "struct facet"s. */
102 static struct rule_dpif
*rule_dpif_cast(const struct rule
*rule
)
104 return rule
? CONTAINER_OF(rule
, struct rule_dpif
, up
) : NULL
;
107 static struct rule_dpif
*rule_dpif_lookup(struct ofproto_dpif
*,
108 const struct flow
*, uint8_t table
);
110 static void rule_credit_stats(struct rule_dpif
*,
111 const struct dpif_flow_stats
*);
112 static void flow_push_stats(struct rule_dpif
*, const struct flow
*,
113 const struct dpif_flow_stats
*);
114 static tag_type
rule_calculate_tag(const struct flow
*,
115 const struct flow_wildcards
*,
117 static void rule_invalidate(const struct rule_dpif
*);
119 #define MAX_MIRRORS 32
120 typedef uint32_t mirror_mask_t
;
121 #define MIRROR_MASK_C(X) UINT32_C(X)
122 BUILD_ASSERT_DECL(sizeof(mirror_mask_t
) * CHAR_BIT
>= MAX_MIRRORS
);
124 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
125 size_t idx
; /* In ofproto's "mirrors" array. */
126 void *aux
; /* Key supplied by ofproto's client. */
127 char *name
; /* Identifier for log messages. */
129 /* Selection criteria. */
130 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
131 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
132 unsigned long *vlans
; /* Bitmap of chosen VLANs, NULL selects all. */
134 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
135 struct ofbundle
*out
; /* Output port or NULL. */
136 int out_vlan
; /* Output VLAN or -1. */
137 mirror_mask_t dup_mirrors
; /* Bitmap of mirrors with the same output. */
140 int64_t packet_count
; /* Number of packets sent. */
141 int64_t byte_count
; /* Number of bytes sent. */
144 static void mirror_destroy(struct ofmirror
*);
145 static void update_mirror_stats(struct ofproto_dpif
*ofproto
,
146 mirror_mask_t mirrors
,
147 uint64_t packets
, uint64_t bytes
);
150 struct hmap_node hmap_node
; /* In struct ofproto's "bundles" hmap. */
151 struct ofproto_dpif
*ofproto
; /* Owning ofproto. */
152 void *aux
; /* Key supplied by ofproto's client. */
153 char *name
; /* Identifier for log messages. */
156 struct list ports
; /* Contains "struct ofport"s. */
157 enum port_vlan_mode vlan_mode
; /* VLAN mode */
158 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
159 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
160 * NULL if all VLANs are trunked. */
161 struct lacp
*lacp
; /* LACP if LACP is enabled, otherwise NULL. */
162 struct bond
*bond
; /* Nonnull iff more than one port. */
163 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
166 bool floodable
; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
168 /* Port mirroring info. */
169 mirror_mask_t src_mirrors
; /* Mirrors triggered when packet received. */
170 mirror_mask_t dst_mirrors
; /* Mirrors triggered when packet sent. */
171 mirror_mask_t mirror_out
; /* Mirrors that output to this bundle. */
174 static void bundle_remove(struct ofport
*);
175 static void bundle_update(struct ofbundle
*);
176 static void bundle_destroy(struct ofbundle
*);
177 static void bundle_del_port(struct ofport_dpif
*);
178 static void bundle_run(struct ofbundle
*);
179 static void bundle_wait(struct ofbundle
*);
180 static struct ofbundle
*lookup_input_bundle(struct ofproto_dpif
*,
181 uint16_t in_port
, bool warn
,
182 struct ofport_dpif
**in_ofportp
);
184 /* A controller may use OFPP_NONE as the ingress port to indicate that
185 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
186 * when an input bundle is needed for validation (e.g., mirroring or
187 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
188 * any 'port' structs, so care must be taken when dealing with it. */
189 static struct ofbundle ofpp_none_bundle
= {
191 .vlan_mode
= PORT_VLAN_TRUNK
194 static void stp_run(struct ofproto_dpif
*ofproto
);
195 static void stp_wait(struct ofproto_dpif
*ofproto
);
196 static int set_stp_port(struct ofport
*,
197 const struct ofproto_port_stp_settings
*);
199 static bool ofbundle_includes_vlan(const struct ofbundle
*, uint16_t vlan
);
201 struct action_xlate_ctx
{
202 /* action_xlate_ctx_init() initializes these members. */
205 struct ofproto_dpif
*ofproto
;
207 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
208 * this flow when actions change header fields. */
211 /* The packet corresponding to 'flow', or a null pointer if we are
212 * revalidating without a packet to refer to. */
213 const struct ofpbuf
*packet
;
215 /* Should OFPP_NORMAL update the MAC learning table? Should "learn"
216 * actions update the flow table?
218 * We want to update these tables if we are actually processing a packet,
219 * or if we are accounting for packets that the datapath has processed, but
220 * not if we are just revalidating. */
223 /* The rule that we are currently translating, or NULL. */
224 struct rule_dpif
*rule
;
226 /* Union of the set of TCP flags seen so far in this flow. (Used only by
227 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
231 /* If nonnull, flow translation calls this function just before executing a
232 * resubmit or OFPP_TABLE action. In addition, disables logging of traces
233 * when the recursion depth is exceeded.
235 * 'rule' is the rule being submitted into. It will be null if the
236 * resubmit or OFPP_TABLE action didn't find a matching rule.
238 * This is normally null so the client has to set it manually after
239 * calling action_xlate_ctx_init(). */
240 void (*resubmit_hook
)(struct action_xlate_ctx
*, struct rule_dpif
*rule
);
242 /* If nonnull, flow translation credits the specified statistics to each
243 * rule reached through a resubmit or OFPP_TABLE action.
245 * This is normally null so the client has to set it manually after
246 * calling action_xlate_ctx_init(). */
247 const struct dpif_flow_stats
*resubmit_stats
;
249 /* xlate_actions() initializes and uses these members. The client might want
250 * to look at them after it returns. */
252 struct ofpbuf
*odp_actions
; /* Datapath actions. */
253 tag_type tags
; /* Tags associated with actions. */
254 bool may_set_up_flow
; /* True ordinarily; false if the actions must
255 * be reassessed for every packet. */
256 bool has_learn
; /* Actions include NXAST_LEARN? */
257 bool has_normal
; /* Actions output to OFPP_NORMAL? */
258 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
259 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
260 mirror_mask_t mirrors
; /* Bitmap of associated mirrors. */
262 /* xlate_actions() initializes and uses these members, but the client has no
263 * reason to look at them. */
265 int recurse
; /* Recursion level, via xlate_table_action. */
266 bool max_resubmit_trigger
; /* Recursed too deeply during translation. */
267 struct flow base_flow
; /* Flow at the last commit. */
268 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
269 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
270 uint32_t sflow_n_outputs
; /* Number of output ports. */
271 uint16_t sflow_odp_port
; /* Output port for composing sFlow action. */
272 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
273 bool exit
; /* No further actions should be processed. */
274 struct flow orig_flow
; /* Copy of original flow. */
277 static void action_xlate_ctx_init(struct action_xlate_ctx
*,
278 struct ofproto_dpif
*, const struct flow
*,
279 ovs_be16 initial_tci
, struct rule_dpif
*,
280 uint8_t tcp_flags
, const struct ofpbuf
*);
281 static void xlate_actions(struct action_xlate_ctx
*,
282 const union ofp_action
*in
, size_t n_in
,
283 struct ofpbuf
*odp_actions
);
284 static void xlate_actions_for_side_effects(struct action_xlate_ctx
*,
285 const union ofp_action
*in
,
288 /* A dpif flow and actions associated with a facet.
290 * See also the large comment on struct facet. */
293 struct hmap_node hmap_node
; /* In struct ofproto_dpif 'subfacets' list. */
294 struct list list_node
; /* In struct facet's 'facets' list. */
295 struct facet
*facet
; /* Owning facet. */
299 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
300 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
301 * regenerate the ODP flow key from ->facet->flow. */
302 enum odp_key_fitness key_fitness
;
306 long long int used
; /* Time last used; time created if not used. */
308 uint64_t dp_packet_count
; /* Last known packet count in the datapath. */
309 uint64_t dp_byte_count
; /* Last known byte count in the datapath. */
313 * These should be essentially identical for every subfacet in a facet, but
314 * may differ in trivial ways due to VLAN splinters. */
315 size_t actions_len
; /* Number of bytes in actions[]. */
316 struct nlattr
*actions
; /* Datapath actions. */
318 bool installed
; /* Installed in datapath? */
320 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
321 * splinters can cause it to differ. This value should be removed when
322 * the VLAN splinters feature is no longer needed. */
323 ovs_be16 initial_tci
; /* Initial VLAN TCI value. */
326 static struct subfacet
*subfacet_create(struct facet
*, enum odp_key_fitness
,
327 const struct nlattr
*key
,
328 size_t key_len
, ovs_be16 initial_tci
);
329 static struct subfacet
*subfacet_find(struct ofproto_dpif
*,
330 const struct nlattr
*key
, size_t key_len
);
331 static void subfacet_destroy(struct subfacet
*);
332 static void subfacet_destroy__(struct subfacet
*);
333 static void subfacet_get_key(struct subfacet
*, struct odputil_keybuf
*,
335 static void subfacet_reset_dp_stats(struct subfacet
*,
336 struct dpif_flow_stats
*);
337 static void subfacet_update_time(struct subfacet
*, long long int used
);
338 static void subfacet_update_stats(struct subfacet
*,
339 const struct dpif_flow_stats
*);
340 static void subfacet_make_actions(struct subfacet
*,
341 const struct ofpbuf
*packet
,
342 struct ofpbuf
*odp_actions
);
343 static int subfacet_install(struct subfacet
*,
344 const struct nlattr
*actions
, size_t actions_len
,
345 struct dpif_flow_stats
*);
346 static void subfacet_uninstall(struct subfacet
*);
348 /* An exact-match instantiation of an OpenFlow flow.
350 * A facet associates a "struct flow", which represents the Open vSwitch
351 * userspace idea of an exact-match flow, with one or more subfacets. Each
352 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
353 * the facet. When the kernel module (or other dpif implementation) and Open
354 * vSwitch userspace agree on the definition of a flow key, there is exactly
355 * one subfacet per facet. If the dpif implementation supports more-specific
356 * flow matching than userspace, however, a facet can have more than one
357 * subfacet, each of which corresponds to some distinction in flow that
358 * userspace simply doesn't understand.
360 * Flow expiration works in terms of subfacets, so a facet must have at least
361 * one subfacet or it will never expire, leaking memory. */
364 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
365 struct list list_node
; /* In owning rule's 'facets' list. */
366 struct rule_dpif
*rule
; /* Owning rule. */
369 struct list subfacets
;
370 long long int used
; /* Time last used; time created if not used. */
377 * - Do include packets and bytes sent "by hand", e.g. with
380 * - Do include packets and bytes that were obtained from the datapath
381 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
382 * DPIF_FP_ZERO_STATS).
384 * - Do not include packets or bytes that can be obtained from the
385 * datapath for any existing subfacet.
387 uint64_t packet_count
; /* Number of packets received. */
388 uint64_t byte_count
; /* Number of bytes received. */
390 /* Resubmit statistics. */
391 uint64_t prev_packet_count
; /* Number of packets from last stats push. */
392 uint64_t prev_byte_count
; /* Number of bytes from last stats push. */
393 long long int prev_used
; /* Used time from last stats push. */
396 uint64_t accounted_bytes
; /* Bytes processed by facet_account(). */
397 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
398 uint8_t tcp_flags
; /* TCP flags seen for this 'rule'. */
400 /* Properties of datapath actions.
402 * Every subfacet has its own actions because actions can differ slightly
403 * between splintered and non-splintered subfacets due to the VLAN tag
404 * being initially different (present vs. absent). All of them have these
405 * properties in common so we just store one copy of them here. */
406 bool may_install
; /* Reassess actions for every packet? */
407 bool has_learn
; /* Actions include NXAST_LEARN? */
408 bool has_normal
; /* Actions output to OFPP_NORMAL? */
409 bool has_fin_timeout
; /* Actions include NXAST_FIN_TIMEOUT? */
410 tag_type tags
; /* Tags that would require revalidation. */
411 mirror_mask_t mirrors
; /* Bitmap of dependent mirrors. */
413 /* Storage for a single subfacet, to reduce malloc() time and space
414 * overhead. (A facet always has at least one subfacet and in the common
415 * case has exactly one subfacet.) */
416 struct subfacet one_subfacet
;
419 static struct facet
*facet_create(struct rule_dpif
*,
420 const struct flow
*, uint32_t hash
);
421 static void facet_remove(struct facet
*);
422 static void facet_free(struct facet
*);
424 static struct facet
*facet_find(struct ofproto_dpif
*,
425 const struct flow
*, uint32_t hash
);
426 static struct facet
*facet_lookup_valid(struct ofproto_dpif
*,
427 const struct flow
*, uint32_t hash
);
428 static bool facet_revalidate(struct facet
*);
429 static bool facet_check_consistency(struct facet
*);
431 static void facet_flush_stats(struct facet
*);
433 static void facet_update_time(struct facet
*, long long int used
);
434 static void facet_reset_counters(struct facet
*);
435 static void facet_push_stats(struct facet
*);
436 static void facet_learn(struct facet
*);
437 static void facet_account(struct facet
*);
439 static bool facet_is_controller_flow(struct facet
*);
445 struct ofbundle
*bundle
; /* Bundle that contains this port, if any. */
446 struct list bundle_node
; /* In struct ofbundle's "ports" list. */
447 struct cfm
*cfm
; /* Connectivity Fault Management, if any. */
448 tag_type tag
; /* Tag associated with this port. */
449 uint32_t bond_stable_id
; /* stable_id to use as bond slave, or 0. */
450 bool may_enable
; /* May be enabled in bonds. */
451 long long int carrier_seq
; /* Carrier status changes. */
454 struct stp_port
*stp_port
; /* Spanning Tree Protocol, if any. */
455 enum stp_state stp_state
; /* Always STP_DISABLED if STP not in use. */
456 long long int stp_state_entered
;
458 struct hmap priorities
; /* Map of attached 'priority_to_dscp's. */
460 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
462 * This is deprecated. It is only for compatibility with broken device
463 * drivers in old versions of Linux that do not properly support VLANs when
464 * VLAN devices are not used. When broken device drivers are no longer in
465 * widespread use, we will delete these interfaces. */
466 uint16_t realdev_ofp_port
;
470 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
471 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
472 * traffic egressing the 'ofport' with that priority should be marked with. */
473 struct priority_to_dscp
{
474 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'priorities' map. */
475 uint32_t priority
; /* Priority of this queue (see struct flow). */
477 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
480 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
482 * This is deprecated. It is only for compatibility with broken device drivers
483 * in old versions of Linux that do not properly support VLANs when VLAN
484 * devices are not used. When broken device drivers are no longer in
485 * widespread use, we will delete these interfaces. */
486 struct vlan_splinter
{
487 struct hmap_node realdev_vid_node
;
488 struct hmap_node vlandev_node
;
489 uint16_t realdev_ofp_port
;
490 uint16_t vlandev_ofp_port
;
494 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif
*,
495 uint32_t realdev
, ovs_be16 vlan_tci
);
496 static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif
*,
497 uint16_t vlandev
, int *vid
);
498 static void vsp_remove(struct ofport_dpif
*);
499 static void vsp_add(struct ofport_dpif
*, uint16_t realdev_ofp_port
, int vid
);
501 static struct ofport_dpif
*
502 ofport_dpif_cast(const struct ofport
*ofport
)
504 assert(ofport
->ofproto
->ofproto_class
== &ofproto_dpif_class
);
505 return ofport
? CONTAINER_OF(ofport
, struct ofport_dpif
, up
) : NULL
;
508 static void port_run(struct ofport_dpif
*);
509 static void port_wait(struct ofport_dpif
*);
510 static int set_cfm(struct ofport
*, const struct cfm_settings
*);
511 static void ofport_clear_priorities(struct ofport_dpif
*);
513 struct dpif_completion
{
514 struct list list_node
;
515 struct ofoperation
*op
;
518 /* Extra information about a classifier table.
519 * Currently used just for optimized flow revalidation. */
521 /* If either of these is nonnull, then this table has a form that allows
522 * flows to be tagged to avoid revalidating most flows for the most common
523 * kinds of flow table changes. */
524 struct cls_table
*catchall_table
; /* Table that wildcards all fields. */
525 struct cls_table
*other_table
; /* Table with any other wildcard set. */
526 uint32_t basis
; /* Keeps each table's tags separate. */
529 struct ofproto_dpif
{
530 struct hmap_node all_ofproto_dpifs_node
; /* In 'all_ofproto_dpifs'. */
539 struct netflow
*netflow
;
540 struct dpif_sflow
*sflow
;
541 struct hmap bundles
; /* Contains "struct ofbundle"s. */
542 struct mac_learning
*ml
;
543 struct ofmirror
*mirrors
[MAX_MIRRORS
];
545 bool has_bonded_bundles
;
548 struct timer next_expiration
;
552 struct hmap subfacets
;
553 struct governor
*governor
;
556 struct table_dpif tables
[N_TABLES
];
557 bool need_revalidate
;
558 struct tag_set revalidate_set
;
560 /* Support for debugging async flow mods. */
561 struct list completions
;
563 bool has_bundle_action
; /* True when the first bundle action appears. */
564 struct netdev_stats stats
; /* To account packets generated and consumed in
569 long long int stp_last_tick
;
571 /* VLAN splinters. */
572 struct hmap realdev_vid_map
; /* (realdev,vid) -> vlandev. */
573 struct hmap vlandev_map
; /* vlandev -> (realdev,vid). */
576 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
577 * for debugging the asynchronous flow_mod implementation.) */
580 /* All existing ofproto_dpif instances, indexed by ->up.name. */
581 static struct hmap all_ofproto_dpifs
= HMAP_INITIALIZER(&all_ofproto_dpifs
);
583 static void ofproto_dpif_unixctl_init(void);
585 static struct ofproto_dpif
*
586 ofproto_dpif_cast(const struct ofproto
*ofproto
)
588 assert(ofproto
->ofproto_class
== &ofproto_dpif_class
);
589 return CONTAINER_OF(ofproto
, struct ofproto_dpif
, up
);
592 static struct ofport_dpif
*get_ofp_port(struct ofproto_dpif
*,
594 static struct ofport_dpif
*get_odp_port(struct ofproto_dpif
*,
596 static void ofproto_trace(struct ofproto_dpif
*, const struct flow
*,
597 const struct ofpbuf
*, ovs_be16 initial_tci
,
600 /* Packet processing. */
601 static void update_learning_table(struct ofproto_dpif
*,
602 const struct flow
*, int vlan
,
605 #define FLOW_MISS_MAX_BATCH 50
606 static int handle_upcalls(struct ofproto_dpif
*, unsigned int max_batch
);
608 /* Flow expiration. */
609 static int expire(struct ofproto_dpif
*);
612 static void send_netflow_active_timeouts(struct ofproto_dpif
*);
615 static int send_packet(const struct ofport_dpif
*, struct ofpbuf
*packet
);
617 compose_sflow_action(const struct ofproto_dpif
*, struct ofpbuf
*odp_actions
,
618 const struct flow
*, uint32_t odp_port
);
619 static void add_mirror_actions(struct action_xlate_ctx
*ctx
,
620 const struct flow
*flow
);
621 /* Global variables. */
622 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
624 /* Factory functions. */
627 enumerate_types(struct sset
*types
)
629 dp_enumerate_types(types
);
633 enumerate_names(const char *type
, struct sset
*names
)
635 return dp_enumerate_names(type
, names
);
639 del(const char *type
, const char *name
)
644 error
= dpif_open(name
, type
, &dpif
);
646 error
= dpif_delete(dpif
);
652 /* Basic life-cycle. */
654 static struct ofproto
*
657 struct ofproto_dpif
*ofproto
= xmalloc(sizeof *ofproto
);
662 dealloc(struct ofproto
*ofproto_
)
664 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
669 construct(struct ofproto
*ofproto_
)
671 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
672 const char *name
= ofproto
->up
.name
;
676 error
= dpif_create_and_open(name
, ofproto
->up
.type
, &ofproto
->dpif
);
678 VLOG_ERR("failed to open datapath %s: %s", name
, strerror(error
));
682 ofproto
->max_ports
= dpif_get_max_ports(ofproto
->dpif
);
683 ofproto
->n_matches
= 0;
685 dpif_flow_flush(ofproto
->dpif
);
686 dpif_recv_purge(ofproto
->dpif
);
688 error
= dpif_recv_set(ofproto
->dpif
, true);
690 VLOG_ERR("failed to listen on datapath %s: %s", name
, strerror(error
));
691 dpif_close(ofproto
->dpif
);
695 ofproto
->netflow
= NULL
;
696 ofproto
->sflow
= NULL
;
698 hmap_init(&ofproto
->bundles
);
699 ofproto
->ml
= mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME
);
700 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
701 ofproto
->mirrors
[i
] = NULL
;
703 ofproto
->has_bonded_bundles
= false;
705 timer_set_duration(&ofproto
->next_expiration
, 1000);
707 hmap_init(&ofproto
->facets
);
708 hmap_init(&ofproto
->subfacets
);
709 ofproto
->governor
= NULL
;
711 for (i
= 0; i
< N_TABLES
; i
++) {
712 struct table_dpif
*table
= &ofproto
->tables
[i
];
714 table
->catchall_table
= NULL
;
715 table
->other_table
= NULL
;
716 table
->basis
= random_uint32();
718 ofproto
->need_revalidate
= false;
719 tag_set_init(&ofproto
->revalidate_set
);
721 list_init(&ofproto
->completions
);
723 ofproto_dpif_unixctl_init();
725 ofproto
->has_mirrors
= false;
726 ofproto
->has_bundle_action
= false;
728 hmap_init(&ofproto
->vlandev_map
);
729 hmap_init(&ofproto
->realdev_vid_map
);
731 hmap_insert(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
,
732 hash_string(ofproto
->up
.name
, 0));
733 memset(&ofproto
->stats
, 0, sizeof ofproto
->stats
);
735 ofproto_init_tables(ofproto_
, N_TABLES
);
741 complete_operations(struct ofproto_dpif
*ofproto
)
743 struct dpif_completion
*c
, *next
;
745 LIST_FOR_EACH_SAFE (c
, next
, list_node
, &ofproto
->completions
) {
746 ofoperation_complete(c
->op
, 0);
747 list_remove(&c
->list_node
);
753 destruct(struct ofproto
*ofproto_
)
755 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
756 struct rule_dpif
*rule
, *next_rule
;
757 struct oftable
*table
;
760 hmap_remove(&all_ofproto_dpifs
, &ofproto
->all_ofproto_dpifs_node
);
761 complete_operations(ofproto
);
763 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
764 struct cls_cursor cursor
;
766 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
767 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
768 ofproto_rule_destroy(&rule
->up
);
772 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
773 mirror_destroy(ofproto
->mirrors
[i
]);
776 netflow_destroy(ofproto
->netflow
);
777 dpif_sflow_destroy(ofproto
->sflow
);
778 hmap_destroy(&ofproto
->bundles
);
779 mac_learning_destroy(ofproto
->ml
);
781 hmap_destroy(&ofproto
->facets
);
782 hmap_destroy(&ofproto
->subfacets
);
783 governor_destroy(ofproto
->governor
);
785 hmap_destroy(&ofproto
->vlandev_map
);
786 hmap_destroy(&ofproto
->realdev_vid_map
);
788 dpif_close(ofproto
->dpif
);
792 run_fast(struct ofproto
*ofproto_
)
794 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
797 /* Handle one or more batches of upcalls, until there's nothing left to do
798 * or until we do a fixed total amount of work.
800 * We do work in batches because it can be much cheaper to set up a number
801 * of flows and fire off their patches all at once. We do multiple batches
802 * because in some cases handling a packet can cause another packet to be
803 * queued almost immediately as part of the return flow. Both
804 * optimizations can make major improvements on some benchmarks and
805 * presumably for real traffic as well. */
807 while (work
< FLOW_MISS_MAX_BATCH
) {
808 int retval
= handle_upcalls(ofproto
, FLOW_MISS_MAX_BATCH
- work
);
818 run(struct ofproto
*ofproto_
)
820 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
821 struct ofport_dpif
*ofport
;
822 struct ofbundle
*bundle
;
826 complete_operations(ofproto
);
828 dpif_run(ofproto
->dpif
);
830 error
= run_fast(ofproto_
);
835 if (timer_expired(&ofproto
->next_expiration
)) {
836 int delay
= expire(ofproto
);
837 timer_set_duration(&ofproto
->next_expiration
, delay
);
840 if (ofproto
->netflow
) {
841 if (netflow_run(ofproto
->netflow
)) {
842 send_netflow_active_timeouts(ofproto
);
845 if (ofproto
->sflow
) {
846 dpif_sflow_run(ofproto
->sflow
);
849 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
852 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
857 mac_learning_run(ofproto
->ml
, &ofproto
->revalidate_set
);
859 /* Now revalidate if there's anything to do. */
860 if (ofproto
->need_revalidate
861 || !tag_set_is_empty(&ofproto
->revalidate_set
)) {
862 struct tag_set revalidate_set
= ofproto
->revalidate_set
;
863 bool revalidate_all
= ofproto
->need_revalidate
;
864 struct facet
*facet
, *next
;
866 /* Clear the revalidation flags. */
867 tag_set_init(&ofproto
->revalidate_set
);
868 ofproto
->need_revalidate
= false;
870 HMAP_FOR_EACH_SAFE (facet
, next
, hmap_node
, &ofproto
->facets
) {
872 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
873 facet_revalidate(facet
);
878 /* Check the consistency of a random facet, to aid debugging. */
879 if (!hmap_is_empty(&ofproto
->facets
) && !ofproto
->need_revalidate
) {
882 facet
= CONTAINER_OF(hmap_random_node(&ofproto
->facets
),
883 struct facet
, hmap_node
);
884 if (!tag_set_intersects(&ofproto
->revalidate_set
, facet
->tags
)) {
885 if (!facet_check_consistency(facet
)) {
886 ofproto
->need_revalidate
= true;
891 if (ofproto
->governor
) {
894 governor_run(ofproto
->governor
);
896 /* If the governor has shrunk to its minimum size and the number of
897 * subfacets has dwindled, then drop the governor entirely.
899 * For hysteresis, the number of subfacets to drop the governor is
900 * smaller than the number needed to trigger its creation. */
901 n_subfacets
= hmap_count(&ofproto
->subfacets
);
902 if (n_subfacets
* 4 < ofproto
->up
.flow_eviction_threshold
903 && governor_is_idle(ofproto
->governor
)) {
904 governor_destroy(ofproto
->governor
);
905 ofproto
->governor
= NULL
;
913 wait(struct ofproto
*ofproto_
)
915 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
916 struct ofport_dpif
*ofport
;
917 struct ofbundle
*bundle
;
919 if (!clogged
&& !list_is_empty(&ofproto
->completions
)) {
920 poll_immediate_wake();
923 dpif_wait(ofproto
->dpif
);
924 dpif_recv_wait(ofproto
->dpif
);
925 if (ofproto
->sflow
) {
926 dpif_sflow_wait(ofproto
->sflow
);
928 if (!tag_set_is_empty(&ofproto
->revalidate_set
)) {
929 poll_immediate_wake();
931 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
934 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
937 if (ofproto
->netflow
) {
938 netflow_wait(ofproto
->netflow
);
940 mac_learning_wait(ofproto
->ml
);
942 if (ofproto
->need_revalidate
) {
943 /* Shouldn't happen, but if it does just go around again. */
944 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
945 poll_immediate_wake();
947 timer_wait(&ofproto
->next_expiration
);
949 if (ofproto
->governor
) {
950 governor_wait(ofproto
->governor
);
955 flush(struct ofproto
*ofproto_
)
957 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
958 struct facet
*facet
, *next_facet
;
960 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
961 /* Mark the facet as not installed so that facet_remove() doesn't
962 * bother trying to uninstall it. There is no point in uninstalling it
963 * individually since we are about to blow away all the facets with
964 * dpif_flow_flush(). */
965 struct subfacet
*subfacet
;
967 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
968 subfacet
->installed
= false;
969 subfacet
->dp_packet_count
= 0;
970 subfacet
->dp_byte_count
= 0;
974 dpif_flow_flush(ofproto
->dpif
);
978 get_features(struct ofproto
*ofproto_ OVS_UNUSED
,
979 bool *arp_match_ip
, enum ofputil_action_bitmap
*actions
)
981 *arp_match_ip
= true;
982 *actions
= (OFPUTIL_A_OUTPUT
|
983 OFPUTIL_A_SET_VLAN_VID
|
984 OFPUTIL_A_SET_VLAN_PCP
|
985 OFPUTIL_A_STRIP_VLAN
|
986 OFPUTIL_A_SET_DL_SRC
|
987 OFPUTIL_A_SET_DL_DST
|
988 OFPUTIL_A_SET_NW_SRC
|
989 OFPUTIL_A_SET_NW_DST
|
990 OFPUTIL_A_SET_NW_TOS
|
991 OFPUTIL_A_SET_TP_SRC
|
992 OFPUTIL_A_SET_TP_DST
|
997 get_tables(struct ofproto
*ofproto_
, struct ofp_table_stats
*ots
)
999 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1000 struct dpif_dp_stats s
;
1002 strcpy(ots
->name
, "classifier");
1004 dpif_get_dp_stats(ofproto
->dpif
, &s
);
1005 put_32aligned_be64(&ots
->lookup_count
, htonll(s
.n_hit
+ s
.n_missed
));
1006 put_32aligned_be64(&ots
->matched_count
,
1007 htonll(s
.n_hit
+ ofproto
->n_matches
));
1010 static struct ofport
*
1013 struct ofport_dpif
*port
= xmalloc(sizeof *port
);
1018 port_dealloc(struct ofport
*port_
)
1020 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1025 port_construct(struct ofport
*port_
)
1027 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1028 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1030 ofproto
->need_revalidate
= true;
1031 port
->odp_port
= ofp_port_to_odp_port(port
->up
.ofp_port
);
1032 port
->bundle
= NULL
;
1034 port
->tag
= tag_create_random();
1035 port
->may_enable
= true;
1036 port
->stp_port
= NULL
;
1037 port
->stp_state
= STP_DISABLED
;
1038 hmap_init(&port
->priorities
);
1039 port
->realdev_ofp_port
= 0;
1040 port
->vlandev_vid
= 0;
1041 port
->carrier_seq
= netdev_get_carrier_resets(port
->up
.netdev
);
1043 if (ofproto
->sflow
) {
1044 dpif_sflow_add_port(ofproto
->sflow
, port_
);
1051 port_destruct(struct ofport
*port_
)
1053 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1054 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1056 ofproto
->need_revalidate
= true;
1057 bundle_remove(port_
);
1058 set_cfm(port_
, NULL
);
1059 if (ofproto
->sflow
) {
1060 dpif_sflow_del_port(ofproto
->sflow
, port
->odp_port
);
1063 ofport_clear_priorities(port
);
1064 hmap_destroy(&port
->priorities
);
1068 port_modified(struct ofport
*port_
)
1070 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1072 if (port
->bundle
&& port
->bundle
->bond
) {
1073 bond_slave_set_netdev(port
->bundle
->bond
, port
, port
->up
.netdev
);
1078 port_reconfigured(struct ofport
*port_
, enum ofputil_port_config old_config
)
1080 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1081 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
1082 enum ofputil_port_config changed
= old_config
^ port
->up
.pp
.config
;
1084 if (changed
& (OFPUTIL_PC_NO_RECV
| OFPUTIL_PC_NO_RECV_STP
|
1085 OFPUTIL_PC_NO_FWD
| OFPUTIL_PC_NO_FLOOD
)) {
1086 ofproto
->need_revalidate
= true;
1088 if (changed
& OFPUTIL_PC_NO_FLOOD
&& port
->bundle
) {
1089 bundle_update(port
->bundle
);
1095 set_sflow(struct ofproto
*ofproto_
,
1096 const struct ofproto_sflow_options
*sflow_options
)
1098 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1099 struct dpif_sflow
*ds
= ofproto
->sflow
;
1101 if (sflow_options
) {
1103 struct ofport_dpif
*ofport
;
1105 ds
= ofproto
->sflow
= dpif_sflow_create(ofproto
->dpif
);
1106 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ofproto
->up
.ports
) {
1107 dpif_sflow_add_port(ds
, &ofport
->up
);
1109 ofproto
->need_revalidate
= true;
1111 dpif_sflow_set_options(ds
, sflow_options
);
1114 dpif_sflow_destroy(ds
);
1115 ofproto
->need_revalidate
= true;
1116 ofproto
->sflow
= NULL
;
1123 set_cfm(struct ofport
*ofport_
, const struct cfm_settings
*s
)
1125 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1132 struct ofproto_dpif
*ofproto
;
1134 ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1135 ofproto
->need_revalidate
= true;
1136 ofport
->cfm
= cfm_create(netdev_get_name(ofport
->up
.netdev
));
1139 if (cfm_configure(ofport
->cfm
, s
)) {
1145 cfm_destroy(ofport
->cfm
);
1151 get_cfm_fault(const struct ofport
*ofport_
)
1153 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1155 return ofport
->cfm
? cfm_get_fault(ofport
->cfm
) : -1;
1159 get_cfm_remote_mpids(const struct ofport
*ofport_
, const uint64_t **rmps
,
1162 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1165 cfm_get_remote_mpids(ofport
->cfm
, rmps
, n_rmps
);
1173 get_cfm_health(const struct ofport
*ofport_
)
1175 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1177 return ofport
->cfm
? cfm_get_health(ofport
->cfm
) : -1;
1180 /* Spanning Tree. */
1183 send_bpdu_cb(struct ofpbuf
*pkt
, int port_num
, void *ofproto_
)
1185 struct ofproto_dpif
*ofproto
= ofproto_
;
1186 struct stp_port
*sp
= stp_get_port(ofproto
->stp
, port_num
);
1187 struct ofport_dpif
*ofport
;
1189 ofport
= stp_port_get_aux(sp
);
1191 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on unknown port %d",
1192 ofproto
->up
.name
, port_num
);
1194 struct eth_header
*eth
= pkt
->l2
;
1196 netdev_get_etheraddr(ofport
->up
.netdev
, eth
->eth_src
);
1197 if (eth_addr_is_zero(eth
->eth_src
)) {
1198 VLOG_WARN_RL(&rl
, "%s: cannot send BPDU on port %d "
1199 "with unknown MAC", ofproto
->up
.name
, port_num
);
1201 send_packet(ofport
, pkt
);
1207 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1209 set_stp(struct ofproto
*ofproto_
, const struct ofproto_stp_settings
*s
)
1211 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1213 /* Only revalidate flows if the configuration changed. */
1214 if (!s
!= !ofproto
->stp
) {
1215 ofproto
->need_revalidate
= true;
1219 if (!ofproto
->stp
) {
1220 ofproto
->stp
= stp_create(ofproto_
->name
, s
->system_id
,
1221 send_bpdu_cb
, ofproto
);
1222 ofproto
->stp_last_tick
= time_msec();
1225 stp_set_bridge_id(ofproto
->stp
, s
->system_id
);
1226 stp_set_bridge_priority(ofproto
->stp
, s
->priority
);
1227 stp_set_hello_time(ofproto
->stp
, s
->hello_time
);
1228 stp_set_max_age(ofproto
->stp
, s
->max_age
);
1229 stp_set_forward_delay(ofproto
->stp
, s
->fwd_delay
);
1231 struct ofport
*ofport
;
1233 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->up
.ports
) {
1234 set_stp_port(ofport
, NULL
);
1237 stp_destroy(ofproto
->stp
);
1238 ofproto
->stp
= NULL
;
1245 get_stp_status(struct ofproto
*ofproto_
, struct ofproto_stp_status
*s
)
1247 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1251 s
->bridge_id
= stp_get_bridge_id(ofproto
->stp
);
1252 s
->designated_root
= stp_get_designated_root(ofproto
->stp
);
1253 s
->root_path_cost
= stp_get_root_path_cost(ofproto
->stp
);
1262 update_stp_port_state(struct ofport_dpif
*ofport
)
1264 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1265 enum stp_state state
;
1267 /* Figure out new state. */
1268 state
= ofport
->stp_port
? stp_port_get_state(ofport
->stp_port
)
1272 if (ofport
->stp_state
!= state
) {
1273 enum ofputil_port_state of_state
;
1276 VLOG_DBG_RL(&rl
, "port %s: STP state changed from %s to %s",
1277 netdev_get_name(ofport
->up
.netdev
),
1278 stp_state_name(ofport
->stp_state
),
1279 stp_state_name(state
));
1280 if (stp_learn_in_state(ofport
->stp_state
)
1281 != stp_learn_in_state(state
)) {
1282 /* xxx Learning action flows should also be flushed. */
1283 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
1285 fwd_change
= stp_forward_in_state(ofport
->stp_state
)
1286 != stp_forward_in_state(state
);
1288 ofproto
->need_revalidate
= true;
1289 ofport
->stp_state
= state
;
1290 ofport
->stp_state_entered
= time_msec();
1292 if (fwd_change
&& ofport
->bundle
) {
1293 bundle_update(ofport
->bundle
);
1296 /* Update the STP state bits in the OpenFlow port description. */
1297 of_state
= ofport
->up
.pp
.state
& ~OFPUTIL_PS_STP_MASK
;
1298 of_state
|= (state
== STP_LISTENING
? OFPUTIL_PS_STP_LISTEN
1299 : state
== STP_LEARNING
? OFPUTIL_PS_STP_LEARN
1300 : state
== STP_FORWARDING
? OFPUTIL_PS_STP_FORWARD
1301 : state
== STP_BLOCKING
? OFPUTIL_PS_STP_BLOCK
1303 ofproto_port_set_state(&ofport
->up
, of_state
);
1307 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1308 * caller is responsible for assigning STP port numbers and ensuring
1309 * there are no duplicates. */
1311 set_stp_port(struct ofport
*ofport_
,
1312 const struct ofproto_port_stp_settings
*s
)
1314 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1315 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1316 struct stp_port
*sp
= ofport
->stp_port
;
1318 if (!s
|| !s
->enable
) {
1320 ofport
->stp_port
= NULL
;
1321 stp_port_disable(sp
);
1322 update_stp_port_state(ofport
);
1325 } else if (sp
&& stp_port_no(sp
) != s
->port_num
1326 && ofport
== stp_port_get_aux(sp
)) {
1327 /* The port-id changed, so disable the old one if it's not
1328 * already in use by another port. */
1329 stp_port_disable(sp
);
1332 sp
= ofport
->stp_port
= stp_get_port(ofproto
->stp
, s
->port_num
);
1333 stp_port_enable(sp
);
1335 stp_port_set_aux(sp
, ofport
);
1336 stp_port_set_priority(sp
, s
->priority
);
1337 stp_port_set_path_cost(sp
, s
->path_cost
);
1339 update_stp_port_state(ofport
);
1345 get_stp_port_status(struct ofport
*ofport_
,
1346 struct ofproto_port_stp_status
*s
)
1348 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1349 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1350 struct stp_port
*sp
= ofport
->stp_port
;
1352 if (!ofproto
->stp
|| !sp
) {
1358 s
->port_id
= stp_port_get_id(sp
);
1359 s
->state
= stp_port_get_state(sp
);
1360 s
->sec_in_state
= (time_msec() - ofport
->stp_state_entered
) / 1000;
1361 s
->role
= stp_port_get_role(sp
);
1362 stp_port_get_counts(sp
, &s
->tx_count
, &s
->rx_count
, &s
->error_count
);
1368 stp_run(struct ofproto_dpif
*ofproto
)
1371 long long int now
= time_msec();
1372 long long int elapsed
= now
- ofproto
->stp_last_tick
;
1373 struct stp_port
*sp
;
1376 stp_tick(ofproto
->stp
, MIN(INT_MAX
, elapsed
));
1377 ofproto
->stp_last_tick
= now
;
1379 while (stp_get_changed_port(ofproto
->stp
, &sp
)) {
1380 struct ofport_dpif
*ofport
= stp_port_get_aux(sp
);
1383 update_stp_port_state(ofport
);
1387 if (stp_check_and_reset_fdb_flush(ofproto
->stp
)) {
1388 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
1394 stp_wait(struct ofproto_dpif
*ofproto
)
1397 poll_timer_wait(1000);
1401 /* Returns true if STP should process 'flow'. */
1403 stp_should_process_flow(const struct flow
*flow
)
1405 return eth_addr_equals(flow
->dl_dst
, eth_addr_stp
);
1409 stp_process_packet(const struct ofport_dpif
*ofport
,
1410 const struct ofpbuf
*packet
)
1412 struct ofpbuf payload
= *packet
;
1413 struct eth_header
*eth
= payload
.data
;
1414 struct stp_port
*sp
= ofport
->stp_port
;
1416 /* Sink packets on ports that have STP disabled when the bridge has
1418 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
1422 /* Trim off padding on payload. */
1423 if (payload
.size
> ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1424 payload
.size
= ntohs(eth
->eth_type
) + ETH_HEADER_LEN
;
1427 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1428 stp_received_bpdu(sp
, payload
.data
, payload
.size
);
1432 static struct priority_to_dscp
*
1433 get_priority(const struct ofport_dpif
*ofport
, uint32_t priority
)
1435 struct priority_to_dscp
*pdscp
;
1438 hash
= hash_int(priority
, 0);
1439 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &ofport
->priorities
) {
1440 if (pdscp
->priority
== priority
) {
1448 ofport_clear_priorities(struct ofport_dpif
*ofport
)
1450 struct priority_to_dscp
*pdscp
, *next
;
1452 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &ofport
->priorities
) {
1453 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
1459 set_queues(struct ofport
*ofport_
,
1460 const struct ofproto_port_queue
*qdscp_list
,
1463 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
1464 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
1465 struct hmap
new = HMAP_INITIALIZER(&new);
1468 for (i
= 0; i
< n_qdscp
; i
++) {
1469 struct priority_to_dscp
*pdscp
;
1473 dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
1474 if (dpif_queue_to_priority(ofproto
->dpif
, qdscp_list
[i
].queue
,
1479 pdscp
= get_priority(ofport
, priority
);
1481 hmap_remove(&ofport
->priorities
, &pdscp
->hmap_node
);
1483 pdscp
= xmalloc(sizeof *pdscp
);
1484 pdscp
->priority
= priority
;
1486 ofproto
->need_revalidate
= true;
1489 if (pdscp
->dscp
!= dscp
) {
1491 ofproto
->need_revalidate
= true;
1494 hmap_insert(&new, &pdscp
->hmap_node
, hash_int(pdscp
->priority
, 0));
1497 if (!hmap_is_empty(&ofport
->priorities
)) {
1498 ofport_clear_priorities(ofport
);
1499 ofproto
->need_revalidate
= true;
1502 hmap_swap(&new, &ofport
->priorities
);
1510 /* Expires all MAC learning entries associated with 'bundle' and forces its
1511 * ofproto to revalidate every flow.
1513 * Normally MAC learning entries are removed only from the ofproto associated
1514 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
1515 * are removed from every ofproto. When patch ports and SLB bonds are in use
1516 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
1517 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
1518 * with the host from which it migrated. */
1520 bundle_flush_macs(struct ofbundle
*bundle
, bool all_ofprotos
)
1522 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
1523 struct mac_learning
*ml
= ofproto
->ml
;
1524 struct mac_entry
*mac
, *next_mac
;
1526 ofproto
->need_revalidate
= true;
1527 LIST_FOR_EACH_SAFE (mac
, next_mac
, lru_node
, &ml
->lrus
) {
1528 if (mac
->port
.p
== bundle
) {
1530 struct ofproto_dpif
*o
;
1532 HMAP_FOR_EACH (o
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
1534 struct mac_entry
*e
;
1536 e
= mac_learning_lookup(o
->ml
, mac
->mac
, mac
->vlan
,
1539 tag_set_add(&o
->revalidate_set
, e
->tag
);
1540 mac_learning_expire(o
->ml
, e
);
1546 mac_learning_expire(ml
, mac
);
1551 static struct ofbundle
*
1552 bundle_lookup(const struct ofproto_dpif
*ofproto
, void *aux
)
1554 struct ofbundle
*bundle
;
1556 HMAP_FOR_EACH_IN_BUCKET (bundle
, hmap_node
, hash_pointer(aux
, 0),
1557 &ofproto
->bundles
) {
1558 if (bundle
->aux
== aux
) {
1565 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
1566 * ones that are found to 'bundles'. */
1568 bundle_lookup_multiple(struct ofproto_dpif
*ofproto
,
1569 void **auxes
, size_t n_auxes
,
1570 struct hmapx
*bundles
)
1574 hmapx_init(bundles
);
1575 for (i
= 0; i
< n_auxes
; i
++) {
1576 struct ofbundle
*bundle
= bundle_lookup(ofproto
, auxes
[i
]);
1578 hmapx_add(bundles
, bundle
);
1584 bundle_update(struct ofbundle
*bundle
)
1586 struct ofport_dpif
*port
;
1588 bundle
->floodable
= true;
1589 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
1590 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
1591 || !stp_forward_in_state(port
->stp_state
)) {
1592 bundle
->floodable
= false;
1599 bundle_del_port(struct ofport_dpif
*port
)
1601 struct ofbundle
*bundle
= port
->bundle
;
1603 bundle
->ofproto
->need_revalidate
= true;
1605 list_remove(&port
->bundle_node
);
1606 port
->bundle
= NULL
;
1609 lacp_slave_unregister(bundle
->lacp
, port
);
1612 bond_slave_unregister(bundle
->bond
, port
);
1615 bundle_update(bundle
);
1619 bundle_add_port(struct ofbundle
*bundle
, uint32_t ofp_port
,
1620 struct lacp_slave_settings
*lacp
,
1621 uint32_t bond_stable_id
)
1623 struct ofport_dpif
*port
;
1625 port
= get_ofp_port(bundle
->ofproto
, ofp_port
);
1630 if (port
->bundle
!= bundle
) {
1631 bundle
->ofproto
->need_revalidate
= true;
1633 bundle_del_port(port
);
1636 port
->bundle
= bundle
;
1637 list_push_back(&bundle
->ports
, &port
->bundle_node
);
1638 if (port
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
1639 || !stp_forward_in_state(port
->stp_state
)) {
1640 bundle
->floodable
= false;
1644 port
->bundle
->ofproto
->need_revalidate
= true;
1645 lacp_slave_register(bundle
->lacp
, port
, lacp
);
1648 port
->bond_stable_id
= bond_stable_id
;
1654 bundle_destroy(struct ofbundle
*bundle
)
1656 struct ofproto_dpif
*ofproto
;
1657 struct ofport_dpif
*port
, *next_port
;
1664 ofproto
= bundle
->ofproto
;
1665 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
1666 struct ofmirror
*m
= ofproto
->mirrors
[i
];
1668 if (m
->out
== bundle
) {
1670 } else if (hmapx_find_and_delete(&m
->srcs
, bundle
)
1671 || hmapx_find_and_delete(&m
->dsts
, bundle
)) {
1672 ofproto
->need_revalidate
= true;
1677 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
1678 bundle_del_port(port
);
1681 bundle_flush_macs(bundle
, true);
1682 hmap_remove(&ofproto
->bundles
, &bundle
->hmap_node
);
1684 free(bundle
->trunks
);
1685 lacp_destroy(bundle
->lacp
);
1686 bond_destroy(bundle
->bond
);
1691 bundle_set(struct ofproto
*ofproto_
, void *aux
,
1692 const struct ofproto_bundle_settings
*s
)
1694 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
1695 bool need_flush
= false;
1696 struct ofport_dpif
*port
;
1697 struct ofbundle
*bundle
;
1698 unsigned long *trunks
;
1704 bundle_destroy(bundle_lookup(ofproto
, aux
));
1708 assert(s
->n_slaves
== 1 || s
->bond
!= NULL
);
1709 assert((s
->lacp
!= NULL
) == (s
->lacp_slaves
!= NULL
));
1711 bundle
= bundle_lookup(ofproto
, aux
);
1713 bundle
= xmalloc(sizeof *bundle
);
1715 bundle
->ofproto
= ofproto
;
1716 hmap_insert(&ofproto
->bundles
, &bundle
->hmap_node
,
1717 hash_pointer(aux
, 0));
1719 bundle
->name
= NULL
;
1721 list_init(&bundle
->ports
);
1722 bundle
->vlan_mode
= PORT_VLAN_TRUNK
;
1724 bundle
->trunks
= NULL
;
1725 bundle
->use_priority_tags
= s
->use_priority_tags
;
1726 bundle
->lacp
= NULL
;
1727 bundle
->bond
= NULL
;
1729 bundle
->floodable
= true;
1731 bundle
->src_mirrors
= 0;
1732 bundle
->dst_mirrors
= 0;
1733 bundle
->mirror_out
= 0;
1736 if (!bundle
->name
|| strcmp(s
->name
, bundle
->name
)) {
1738 bundle
->name
= xstrdup(s
->name
);
1743 if (!bundle
->lacp
) {
1744 ofproto
->need_revalidate
= true;
1745 bundle
->lacp
= lacp_create();
1747 lacp_configure(bundle
->lacp
, s
->lacp
);
1749 lacp_destroy(bundle
->lacp
);
1750 bundle
->lacp
= NULL
;
1753 /* Update set of ports. */
1755 for (i
= 0; i
< s
->n_slaves
; i
++) {
1756 if (!bundle_add_port(bundle
, s
->slaves
[i
],
1757 s
->lacp
? &s
->lacp_slaves
[i
] : NULL
,
1758 s
->bond_stable_ids
? s
->bond_stable_ids
[i
] : 0)) {
1762 if (!ok
|| list_size(&bundle
->ports
) != s
->n_slaves
) {
1763 struct ofport_dpif
*next_port
;
1765 LIST_FOR_EACH_SAFE (port
, next_port
, bundle_node
, &bundle
->ports
) {
1766 for (i
= 0; i
< s
->n_slaves
; i
++) {
1767 if (s
->slaves
[i
] == port
->up
.ofp_port
) {
1772 bundle_del_port(port
);
1776 assert(list_size(&bundle
->ports
) <= s
->n_slaves
);
1778 if (list_is_empty(&bundle
->ports
)) {
1779 bundle_destroy(bundle
);
1783 /* Set VLAN tagging mode */
1784 if (s
->vlan_mode
!= bundle
->vlan_mode
1785 || s
->use_priority_tags
!= bundle
->use_priority_tags
) {
1786 bundle
->vlan_mode
= s
->vlan_mode
;
1787 bundle
->use_priority_tags
= s
->use_priority_tags
;
1792 vlan
= (s
->vlan_mode
== PORT_VLAN_TRUNK
? -1
1793 : s
->vlan
>= 0 && s
->vlan
<= 4095 ? s
->vlan
1795 if (vlan
!= bundle
->vlan
) {
1796 bundle
->vlan
= vlan
;
1800 /* Get trunked VLANs. */
1801 switch (s
->vlan_mode
) {
1802 case PORT_VLAN_ACCESS
:
1806 case PORT_VLAN_TRUNK
:
1807 trunks
= (unsigned long *) s
->trunks
;
1810 case PORT_VLAN_NATIVE_UNTAGGED
:
1811 case PORT_VLAN_NATIVE_TAGGED
:
1812 if (vlan
!= 0 && (!s
->trunks
1813 || !bitmap_is_set(s
->trunks
, vlan
)
1814 || bitmap_is_set(s
->trunks
, 0))) {
1815 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
1817 trunks
= bitmap_clone(s
->trunks
, 4096);
1819 trunks
= bitmap_allocate1(4096);
1821 bitmap_set1(trunks
, vlan
);
1822 bitmap_set0(trunks
, 0);
1824 trunks
= (unsigned long *) s
->trunks
;
1831 if (!vlan_bitmap_equal(trunks
, bundle
->trunks
)) {
1832 free(bundle
->trunks
);
1833 if (trunks
== s
->trunks
) {
1834 bundle
->trunks
= vlan_bitmap_clone(trunks
);
1836 bundle
->trunks
= trunks
;
1841 if (trunks
!= s
->trunks
) {
1846 if (!list_is_short(&bundle
->ports
)) {
1847 bundle
->ofproto
->has_bonded_bundles
= true;
1849 if (bond_reconfigure(bundle
->bond
, s
->bond
)) {
1850 ofproto
->need_revalidate
= true;
1853 bundle
->bond
= bond_create(s
->bond
);
1854 ofproto
->need_revalidate
= true;
1857 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
1858 bond_slave_register(bundle
->bond
, port
, port
->bond_stable_id
,
1862 bond_destroy(bundle
->bond
);
1863 bundle
->bond
= NULL
;
1866 /* If we changed something that would affect MAC learning, un-learn
1867 * everything on this port and force flow revalidation. */
1869 bundle_flush_macs(bundle
, false);
1876 bundle_remove(struct ofport
*port_
)
1878 struct ofport_dpif
*port
= ofport_dpif_cast(port_
);
1879 struct ofbundle
*bundle
= port
->bundle
;
1882 bundle_del_port(port
);
1883 if (list_is_empty(&bundle
->ports
)) {
1884 bundle_destroy(bundle
);
1885 } else if (list_is_short(&bundle
->ports
)) {
1886 bond_destroy(bundle
->bond
);
1887 bundle
->bond
= NULL
;
1893 send_pdu_cb(void *port_
, const void *pdu
, size_t pdu_size
)
1895 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 10);
1896 struct ofport_dpif
*port
= port_
;
1897 uint8_t ea
[ETH_ADDR_LEN
];
1900 error
= netdev_get_etheraddr(port
->up
.netdev
, ea
);
1902 struct ofpbuf packet
;
1905 ofpbuf_init(&packet
, 0);
1906 packet_pdu
= eth_compose(&packet
, eth_addr_lacp
, ea
, ETH_TYPE_LACP
,
1908 memcpy(packet_pdu
, pdu
, pdu_size
);
1910 send_packet(port
, &packet
);
1911 ofpbuf_uninit(&packet
);
1913 VLOG_ERR_RL(&rl
, "port %s: cannot obtain Ethernet address of iface "
1914 "%s (%s)", port
->bundle
->name
,
1915 netdev_get_name(port
->up
.netdev
), strerror(error
));
1920 bundle_send_learning_packets(struct ofbundle
*bundle
)
1922 struct ofproto_dpif
*ofproto
= bundle
->ofproto
;
1923 int error
, n_packets
, n_errors
;
1924 struct mac_entry
*e
;
1926 error
= n_packets
= n_errors
= 0;
1927 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
1928 if (e
->port
.p
!= bundle
) {
1929 struct ofpbuf
*learning_packet
;
1930 struct ofport_dpif
*port
;
1934 /* The assignment to "port" is unnecessary but makes "grep"ing for
1935 * struct ofport_dpif more effective. */
1936 learning_packet
= bond_compose_learning_packet(bundle
->bond
,
1940 ret
= send_packet(port
, learning_packet
);
1941 ofpbuf_delete(learning_packet
);
1951 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1952 VLOG_WARN_RL(&rl
, "bond %s: %d errors sending %d gratuitous learning "
1953 "packets, last error was: %s",
1954 bundle
->name
, n_errors
, n_packets
, strerror(error
));
1956 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
1957 bundle
->name
, n_packets
);
1962 bundle_run(struct ofbundle
*bundle
)
1965 lacp_run(bundle
->lacp
, send_pdu_cb
);
1968 struct ofport_dpif
*port
;
1970 LIST_FOR_EACH (port
, bundle_node
, &bundle
->ports
) {
1971 bond_slave_set_may_enable(bundle
->bond
, port
, port
->may_enable
);
1974 bond_run(bundle
->bond
, &bundle
->ofproto
->revalidate_set
,
1975 lacp_status(bundle
->lacp
));
1976 if (bond_should_send_learning_packets(bundle
->bond
)) {
1977 bundle_send_learning_packets(bundle
);
1983 bundle_wait(struct ofbundle
*bundle
)
1986 lacp_wait(bundle
->lacp
);
1989 bond_wait(bundle
->bond
);
1996 mirror_scan(struct ofproto_dpif
*ofproto
)
2000 for (idx
= 0; idx
< MAX_MIRRORS
; idx
++) {
2001 if (!ofproto
->mirrors
[idx
]) {
2008 static struct ofmirror
*
2009 mirror_lookup(struct ofproto_dpif
*ofproto
, void *aux
)
2013 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2014 struct ofmirror
*mirror
= ofproto
->mirrors
[i
];
2015 if (mirror
&& mirror
->aux
== aux
) {
2023 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
2025 mirror_update_dups(struct ofproto_dpif
*ofproto
)
2029 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2030 struct ofmirror
*m
= ofproto
->mirrors
[i
];
2033 m
->dup_mirrors
= MIRROR_MASK_C(1) << i
;
2037 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2038 struct ofmirror
*m1
= ofproto
->mirrors
[i
];
2045 for (j
= i
+ 1; j
< MAX_MIRRORS
; j
++) {
2046 struct ofmirror
*m2
= ofproto
->mirrors
[j
];
2048 if (m2
&& m1
->out
== m2
->out
&& m1
->out_vlan
== m2
->out_vlan
) {
2049 m1
->dup_mirrors
|= MIRROR_MASK_C(1) << j
;
2050 m2
->dup_mirrors
|= m1
->dup_mirrors
;
2057 mirror_set(struct ofproto
*ofproto_
, void *aux
,
2058 const struct ofproto_mirror_settings
*s
)
2060 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2061 mirror_mask_t mirror_bit
;
2062 struct ofbundle
*bundle
;
2063 struct ofmirror
*mirror
;
2064 struct ofbundle
*out
;
2065 struct hmapx srcs
; /* Contains "struct ofbundle *"s. */
2066 struct hmapx dsts
; /* Contains "struct ofbundle *"s. */
2069 mirror
= mirror_lookup(ofproto
, aux
);
2071 mirror_destroy(mirror
);
2077 idx
= mirror_scan(ofproto
);
2079 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2081 ofproto
->up
.name
, MAX_MIRRORS
, s
->name
);
2085 mirror
= ofproto
->mirrors
[idx
] = xzalloc(sizeof *mirror
);
2086 mirror
->ofproto
= ofproto
;
2089 mirror
->out_vlan
= -1;
2090 mirror
->name
= NULL
;
2093 if (!mirror
->name
|| strcmp(s
->name
, mirror
->name
)) {
2095 mirror
->name
= xstrdup(s
->name
);
2098 /* Get the new configuration. */
2099 if (s
->out_bundle
) {
2100 out
= bundle_lookup(ofproto
, s
->out_bundle
);
2102 mirror_destroy(mirror
);
2108 out_vlan
= s
->out_vlan
;
2110 bundle_lookup_multiple(ofproto
, s
->srcs
, s
->n_srcs
, &srcs
);
2111 bundle_lookup_multiple(ofproto
, s
->dsts
, s
->n_dsts
, &dsts
);
2113 /* If the configuration has not changed, do nothing. */
2114 if (hmapx_equals(&srcs
, &mirror
->srcs
)
2115 && hmapx_equals(&dsts
, &mirror
->dsts
)
2116 && vlan_bitmap_equal(mirror
->vlans
, s
->src_vlans
)
2117 && mirror
->out
== out
2118 && mirror
->out_vlan
== out_vlan
)
2120 hmapx_destroy(&srcs
);
2121 hmapx_destroy(&dsts
);
2125 hmapx_swap(&srcs
, &mirror
->srcs
);
2126 hmapx_destroy(&srcs
);
2128 hmapx_swap(&dsts
, &mirror
->dsts
);
2129 hmapx_destroy(&dsts
);
2131 free(mirror
->vlans
);
2132 mirror
->vlans
= vlan_bitmap_clone(s
->src_vlans
);
2135 mirror
->out_vlan
= out_vlan
;
2137 /* Update bundles. */
2138 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2139 HMAP_FOR_EACH (bundle
, hmap_node
, &mirror
->ofproto
->bundles
) {
2140 if (hmapx_contains(&mirror
->srcs
, bundle
)) {
2141 bundle
->src_mirrors
|= mirror_bit
;
2143 bundle
->src_mirrors
&= ~mirror_bit
;
2146 if (hmapx_contains(&mirror
->dsts
, bundle
)) {
2147 bundle
->dst_mirrors
|= mirror_bit
;
2149 bundle
->dst_mirrors
&= ~mirror_bit
;
2152 if (mirror
->out
== bundle
) {
2153 bundle
->mirror_out
|= mirror_bit
;
2155 bundle
->mirror_out
&= ~mirror_bit
;
2159 ofproto
->need_revalidate
= true;
2160 ofproto
->has_mirrors
= true;
2161 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2162 mirror_update_dups(ofproto
);
2168 mirror_destroy(struct ofmirror
*mirror
)
2170 struct ofproto_dpif
*ofproto
;
2171 mirror_mask_t mirror_bit
;
2172 struct ofbundle
*bundle
;
2179 ofproto
= mirror
->ofproto
;
2180 ofproto
->need_revalidate
= true;
2181 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2183 mirror_bit
= MIRROR_MASK_C(1) << mirror
->idx
;
2184 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
2185 bundle
->src_mirrors
&= ~mirror_bit
;
2186 bundle
->dst_mirrors
&= ~mirror_bit
;
2187 bundle
->mirror_out
&= ~mirror_bit
;
2190 hmapx_destroy(&mirror
->srcs
);
2191 hmapx_destroy(&mirror
->dsts
);
2192 free(mirror
->vlans
);
2194 ofproto
->mirrors
[mirror
->idx
] = NULL
;
2198 mirror_update_dups(ofproto
);
2200 ofproto
->has_mirrors
= false;
2201 for (i
= 0; i
< MAX_MIRRORS
; i
++) {
2202 if (ofproto
->mirrors
[i
]) {
2203 ofproto
->has_mirrors
= true;
2210 mirror_get_stats(struct ofproto
*ofproto_
, void *aux
,
2211 uint64_t *packets
, uint64_t *bytes
)
2213 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2214 struct ofmirror
*mirror
= mirror_lookup(ofproto
, aux
);
2217 *packets
= *bytes
= UINT64_MAX
;
2221 *packets
= mirror
->packet_count
;
2222 *bytes
= mirror
->byte_count
;
2228 set_flood_vlans(struct ofproto
*ofproto_
, unsigned long *flood_vlans
)
2230 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2231 if (mac_learning_set_flood_vlans(ofproto
->ml
, flood_vlans
)) {
2232 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
2238 is_mirror_output_bundle(const struct ofproto
*ofproto_
, void *aux
)
2240 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2241 struct ofbundle
*bundle
= bundle_lookup(ofproto
, aux
);
2242 return bundle
&& bundle
->mirror_out
!= 0;
2246 forward_bpdu_changed(struct ofproto
*ofproto_
)
2248 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2249 /* Revalidate cached flows whenever forward_bpdu option changes. */
2250 ofproto
->need_revalidate
= true;
2254 set_mac_idle_time(struct ofproto
*ofproto_
, unsigned int idle_time
)
2256 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2257 mac_learning_set_idle_time(ofproto
->ml
, idle_time
);
2262 static struct ofport_dpif
*
2263 get_ofp_port(struct ofproto_dpif
*ofproto
, uint16_t ofp_port
)
2265 struct ofport
*ofport
= ofproto_get_port(&ofproto
->up
, ofp_port
);
2266 return ofport
? ofport_dpif_cast(ofport
) : NULL
;
2269 static struct ofport_dpif
*
2270 get_odp_port(struct ofproto_dpif
*ofproto
, uint32_t odp_port
)
2272 return get_ofp_port(ofproto
, odp_port_to_ofp_port(odp_port
));
2276 ofproto_port_from_dpif_port(struct ofproto_port
*ofproto_port
,
2277 struct dpif_port
*dpif_port
)
2279 ofproto_port
->name
= dpif_port
->name
;
2280 ofproto_port
->type
= dpif_port
->type
;
2281 ofproto_port
->ofp_port
= odp_port_to_ofp_port(dpif_port
->port_no
);
2285 port_run(struct ofport_dpif
*ofport
)
2287 long long int carrier_seq
= netdev_get_carrier_resets(ofport
->up
.netdev
);
2288 bool carrier_changed
= carrier_seq
!= ofport
->carrier_seq
;
2289 bool enable
= netdev_get_carrier(ofport
->up
.netdev
);
2291 ofport
->carrier_seq
= carrier_seq
;
2294 cfm_run(ofport
->cfm
);
2296 if (cfm_should_send_ccm(ofport
->cfm
)) {
2297 struct ofpbuf packet
;
2299 ofpbuf_init(&packet
, 0);
2300 cfm_compose_ccm(ofport
->cfm
, &packet
, ofport
->up
.pp
.hw_addr
);
2301 send_packet(ofport
, &packet
);
2302 ofpbuf_uninit(&packet
);
2305 enable
= enable
&& !cfm_get_fault(ofport
->cfm
)
2306 && cfm_get_opup(ofport
->cfm
);
2309 if (ofport
->bundle
) {
2310 enable
= enable
&& lacp_slave_may_enable(ofport
->bundle
->lacp
, ofport
);
2311 if (carrier_changed
) {
2312 lacp_slave_carrier_changed(ofport
->bundle
->lacp
, ofport
);
2316 if (ofport
->may_enable
!= enable
) {
2317 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2319 if (ofproto
->has_bundle_action
) {
2320 ofproto
->need_revalidate
= true;
2324 ofport
->may_enable
= enable
;
2328 port_wait(struct ofport_dpif
*ofport
)
2331 cfm_wait(ofport
->cfm
);
2336 port_query_by_name(const struct ofproto
*ofproto_
, const char *devname
,
2337 struct ofproto_port
*ofproto_port
)
2339 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2340 struct dpif_port dpif_port
;
2343 error
= dpif_port_query_by_name(ofproto
->dpif
, devname
, &dpif_port
);
2345 ofproto_port_from_dpif_port(ofproto_port
, &dpif_port
);
2351 port_add(struct ofproto
*ofproto_
, struct netdev
*netdev
, uint16_t *ofp_portp
)
2353 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2357 error
= dpif_port_add(ofproto
->dpif
, netdev
, &odp_port
);
2359 *ofp_portp
= odp_port_to_ofp_port(odp_port
);
2365 port_del(struct ofproto
*ofproto_
, uint16_t ofp_port
)
2367 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2370 error
= dpif_port_del(ofproto
->dpif
, ofp_port_to_odp_port(ofp_port
));
2372 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, ofp_port
);
2374 /* The caller is going to close ofport->up.netdev. If this is a
2375 * bonded port, then the bond is using that netdev, so remove it
2376 * from the bond. The client will need to reconfigure everything
2377 * after deleting ports, so then the slave will get re-added. */
2378 bundle_remove(&ofport
->up
);
2385 port_get_stats(const struct ofport
*ofport_
, struct netdev_stats
*stats
)
2387 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2390 error
= netdev_get_stats(ofport
->up
.netdev
, stats
);
2392 if (!error
&& ofport
->odp_port
== OVSP_LOCAL
) {
2393 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
2395 /* ofproto->stats.tx_packets represents packets that we created
2396 * internally and sent to some port (e.g. packets sent with
2397 * send_packet()). Account for them as if they had come from
2398 * OFPP_LOCAL and got forwarded. */
2400 if (stats
->rx_packets
!= UINT64_MAX
) {
2401 stats
->rx_packets
+= ofproto
->stats
.tx_packets
;
2404 if (stats
->rx_bytes
!= UINT64_MAX
) {
2405 stats
->rx_bytes
+= ofproto
->stats
.tx_bytes
;
2408 /* ofproto->stats.rx_packets represents packets that were received on
2409 * some port and we processed internally and dropped (e.g. STP).
2410 * Account fro them as if they had been forwarded to OFPP_LOCAL. */
2412 if (stats
->tx_packets
!= UINT64_MAX
) {
2413 stats
->tx_packets
+= ofproto
->stats
.rx_packets
;
2416 if (stats
->tx_bytes
!= UINT64_MAX
) {
2417 stats
->tx_bytes
+= ofproto
->stats
.rx_bytes
;
2424 /* Account packets for LOCAL port. */
2426 ofproto_update_local_port_stats(const struct ofproto
*ofproto_
,
2427 size_t tx_size
, size_t rx_size
)
2429 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2432 ofproto
->stats
.rx_packets
++;
2433 ofproto
->stats
.rx_bytes
+= rx_size
;
2436 ofproto
->stats
.tx_packets
++;
2437 ofproto
->stats
.tx_bytes
+= tx_size
;
2441 struct port_dump_state
{
2442 struct dpif_port_dump dump
;
2447 port_dump_start(const struct ofproto
*ofproto_
, void **statep
)
2449 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2450 struct port_dump_state
*state
;
2452 *statep
= state
= xmalloc(sizeof *state
);
2453 dpif_port_dump_start(&state
->dump
, ofproto
->dpif
);
2454 state
->done
= false;
2459 port_dump_next(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
,
2460 struct ofproto_port
*port
)
2462 struct port_dump_state
*state
= state_
;
2463 struct dpif_port dpif_port
;
2465 if (dpif_port_dump_next(&state
->dump
, &dpif_port
)) {
2466 ofproto_port_from_dpif_port(port
, &dpif_port
);
2469 int error
= dpif_port_dump_done(&state
->dump
);
2471 return error
? error
: EOF
;
2476 port_dump_done(const struct ofproto
*ofproto_ OVS_UNUSED
, void *state_
)
2478 struct port_dump_state
*state
= state_
;
2481 dpif_port_dump_done(&state
->dump
);
2488 port_poll(const struct ofproto
*ofproto_
, char **devnamep
)
2490 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2491 return dpif_port_poll(ofproto
->dpif
, devnamep
);
2495 port_poll_wait(const struct ofproto
*ofproto_
)
2497 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
2498 dpif_port_poll_wait(ofproto
->dpif
);
2502 port_is_lacp_current(const struct ofport
*ofport_
)
2504 const struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
2505 return (ofport
->bundle
&& ofport
->bundle
->lacp
2506 ? lacp_slave_is_current(ofport
->bundle
->lacp
, ofport
)
2510 /* Upcall handling. */
2512 /* Flow miss batching.
2514 * Some dpifs implement operations faster when you hand them off in a batch.
2515 * To allow batching, "struct flow_miss" queues the dpif-related work needed
2516 * for a given flow. Each "struct flow_miss" corresponds to sending one or
2517 * more packets, plus possibly installing the flow in the dpif.
2519 * So far we only batch the operations that affect flow setup time the most.
2520 * It's possible to batch more than that, but the benefit might be minimal. */
2522 struct hmap_node hmap_node
;
2524 enum odp_key_fitness key_fitness
;
2525 const struct nlattr
*key
;
2527 ovs_be16 initial_tci
;
2528 struct list packets
;
2531 struct flow_miss_op
{
2532 struct dpif_op dpif_op
;
2533 struct subfacet
*subfacet
; /* Subfacet */
2534 void *garbage
; /* Pointer to pass to free(), NULL if none. */
2535 uint64_t stub
[1024 / 8]; /* Temporary buffer. */
2538 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
2539 * OpenFlow controller as necessary according to their individual
2540 * configurations. */
2542 send_packet_in_miss(struct ofproto_dpif
*ofproto
, const struct ofpbuf
*packet
,
2543 const struct flow
*flow
)
2545 struct ofputil_packet_in pin
;
2547 pin
.packet
= packet
->data
;
2548 pin
.packet_len
= packet
->size
;
2549 pin
.reason
= OFPR_NO_MATCH
;
2550 pin
.controller_id
= 0;
2555 pin
.send_len
= 0; /* not used for flow table misses */
2557 flow_get_metadata(flow
, &pin
.fmd
);
2559 /* Registers aren't meaningful on a miss. */
2560 memset(pin
.fmd
.reg_masks
, 0, sizeof pin
.fmd
.reg_masks
);
2562 connmgr_send_packet_in(ofproto
->up
.connmgr
, &pin
);
2566 process_special(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
2567 const struct ofpbuf
*packet
)
2569 struct ofport_dpif
*ofport
= get_ofp_port(ofproto
, flow
->in_port
);
2575 if (ofport
->cfm
&& cfm_should_process_flow(ofport
->cfm
, flow
)) {
2577 cfm_process_heartbeat(ofport
->cfm
, packet
);
2580 } else if (ofport
->bundle
&& ofport
->bundle
->lacp
2581 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
2583 lacp_process_packet(ofport
->bundle
->lacp
, ofport
, packet
);
2586 } else if (ofproto
->stp
&& stp_should_process_flow(flow
)) {
2588 stp_process_packet(ofport
, packet
);
2595 static struct flow_miss
*
2596 flow_miss_find(struct hmap
*todo
, const struct flow
*flow
, uint32_t hash
)
2598 struct flow_miss
*miss
;
2600 HMAP_FOR_EACH_WITH_HASH (miss
, hmap_node
, hash
, todo
) {
2601 if (flow_equal(&miss
->flow
, flow
)) {
2609 /* Partially Initializes 'op' as an "execute" operation for 'miss' and
2610 * 'packet'. The caller must initialize op->actions and op->actions_len. If
2611 * 'miss' is associated with a subfacet the caller must also initialize the
2612 * returned op->subfacet, and if anything needs to be freed after processing
2613 * the op, the caller must initialize op->garbage also. */
2615 init_flow_miss_execute_op(struct flow_miss
*miss
, struct ofpbuf
*packet
,
2616 struct flow_miss_op
*op
)
2618 if (miss
->flow
.vlan_tci
!= miss
->initial_tci
) {
2619 /* This packet was received on a VLAN splinter port. We
2620 * added a VLAN to the packet to make the packet resemble
2621 * the flow, but the actions were composed assuming that
2622 * the packet contained no VLAN. So, we must remove the
2623 * VLAN header from the packet before trying to execute the
2625 eth_pop_vlan(packet
);
2628 op
->subfacet
= NULL
;
2630 op
->dpif_op
.type
= DPIF_OP_EXECUTE
;
2631 op
->dpif_op
.u
.execute
.key
= miss
->key
;
2632 op
->dpif_op
.u
.execute
.key_len
= miss
->key_len
;
2633 op
->dpif_op
.u
.execute
.packet
= packet
;
2636 /* Helper for handle_flow_miss_without_facet() and
2637 * handle_flow_miss_with_facet(). */
2639 handle_flow_miss_common(struct rule_dpif
*rule
,
2640 struct ofpbuf
*packet
, const struct flow
*flow
)
2642 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
2644 ofproto
->n_matches
++;
2646 if (rule
->up
.cr
.priority
== FAIL_OPEN_PRIORITY
) {
2648 * Extra-special case for fail-open mode.
2650 * We are in fail-open mode and the packet matched the fail-open
2651 * rule, but we are connected to a controller too. We should send
2652 * the packet up to the controller in the hope that it will try to
2653 * set up a flow and thereby allow us to exit fail-open.
2655 * See the top-level comment in fail-open.c for more information.
2657 send_packet_in_miss(ofproto
, packet
, flow
);
2661 /* Figures out whether a flow that missed in 'ofproto', whose details are in
2662 * 'miss', is likely to be worth tracking in detail in userspace and (usually)
2663 * installing a datapath flow. The answer is usually "yes" (a return value of
2664 * true). However, for short flows the cost of bookkeeping is much higher than
2665 * the benefits, so when the datapath holds a large number of flows we impose
2666 * some heuristics to decide which flows are likely to be worth tracking. */
2668 flow_miss_should_make_facet(struct ofproto_dpif
*ofproto
,
2669 struct flow_miss
*miss
, uint32_t hash
)
2671 if (!ofproto
->governor
) {
2674 n_subfacets
= hmap_count(&ofproto
->subfacets
);
2675 if (n_subfacets
* 2 <= ofproto
->up
.flow_eviction_threshold
) {
2679 ofproto
->governor
= governor_create(ofproto
->up
.name
);
2682 return governor_should_install_flow(ofproto
->governor
, hash
,
2683 list_size(&miss
->packets
));
2686 /* Handles 'miss', which matches 'rule', without creating a facet or subfacet
2687 * or creating any datapath flow. May add an "execute" operation to 'ops' and
2688 * increment '*n_ops'. */
2690 handle_flow_miss_without_facet(struct flow_miss
*miss
,
2691 struct rule_dpif
*rule
,
2692 struct flow_miss_op
*ops
, size_t *n_ops
)
2694 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
2695 struct action_xlate_ctx ctx
;
2696 struct ofpbuf
*packet
;
2698 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
2699 struct flow_miss_op
*op
= &ops
[*n_ops
];
2700 struct dpif_flow_stats stats
;
2701 struct ofpbuf odp_actions
;
2703 COVERAGE_INC(facet_suppress
);
2705 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
2707 dpif_flow_stats_extract(&miss
->flow
, packet
, &stats
);
2708 rule_credit_stats(rule
, &stats
);
2710 action_xlate_ctx_init(&ctx
, ofproto
, &miss
->flow
, miss
->initial_tci
,
2712 ctx
.resubmit_stats
= &stats
;
2713 xlate_actions(&ctx
, rule
->up
.actions
, rule
->up
.n_actions
,
2716 if (odp_actions
.size
) {
2717 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
2719 init_flow_miss_execute_op(miss
, packet
, op
);
2720 execute
->actions
= odp_actions
.data
;
2721 execute
->actions_len
= odp_actions
.size
;
2722 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
2726 ofpbuf_uninit(&odp_actions
);
2731 /* Handles 'miss', which matches 'facet'. May add any required datapath
2732 * operations to 'ops', incrementing '*n_ops' for each new op. */
2734 handle_flow_miss_with_facet(struct flow_miss
*miss
, struct facet
*facet
,
2735 struct flow_miss_op
*ops
, size_t *n_ops
)
2737 struct subfacet
*subfacet
;
2738 struct ofpbuf
*packet
;
2740 subfacet
= subfacet_create(facet
,
2741 miss
->key_fitness
, miss
->key
, miss
->key_len
,
2744 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
2745 struct flow_miss_op
*op
= &ops
[*n_ops
];
2746 struct dpif_flow_stats stats
;
2747 struct ofpbuf odp_actions
;
2749 handle_flow_miss_common(facet
->rule
, packet
, &miss
->flow
);
2751 ofpbuf_use_stub(&odp_actions
, op
->stub
, sizeof op
->stub
);
2752 if (!facet
->may_install
|| !subfacet
->actions
) {
2753 subfacet_make_actions(subfacet
, packet
, &odp_actions
);
2756 dpif_flow_stats_extract(&facet
->flow
, packet
, &stats
);
2757 subfacet_update_stats(subfacet
, &stats
);
2759 if (subfacet
->actions_len
) {
2760 struct dpif_execute
*execute
= &op
->dpif_op
.u
.execute
;
2762 init_flow_miss_execute_op(miss
, packet
, op
);
2763 op
->subfacet
= subfacet
;
2764 if (facet
->may_install
) {
2765 execute
->actions
= subfacet
->actions
;
2766 execute
->actions_len
= subfacet
->actions_len
;
2767 ofpbuf_uninit(&odp_actions
);
2769 execute
->actions
= odp_actions
.data
;
2770 execute
->actions_len
= odp_actions
.size
;
2771 op
->garbage
= ofpbuf_get_uninit_pointer(&odp_actions
);
2776 ofpbuf_uninit(&odp_actions
);
2780 if (facet
->may_install
&& subfacet
->key_fitness
!= ODP_FIT_TOO_LITTLE
) {
2781 struct flow_miss_op
*op
= &ops
[(*n_ops
)++];
2782 struct dpif_flow_put
*put
= &op
->dpif_op
.u
.flow_put
;
2784 op
->subfacet
= subfacet
;
2786 op
->dpif_op
.type
= DPIF_OP_FLOW_PUT
;
2787 put
->flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
2788 put
->key
= miss
->key
;
2789 put
->key_len
= miss
->key_len
;
2790 put
->actions
= subfacet
->actions
;
2791 put
->actions_len
= subfacet
->actions_len
;
2796 /* Handles flow miss 'miss' on 'ofproto'. The flow does not match any flow in
2797 * the OpenFlow flow table. */
2799 handle_flow_miss_no_rule(struct ofproto_dpif
*ofproto
, struct flow_miss
*miss
)
2801 uint16_t in_port
= miss
->flow
.in_port
;
2802 struct ofport_dpif
*port
= get_ofp_port(ofproto
, in_port
);
2805 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, in_port
);
2808 if (port
&& port
->up
.pp
.config
& OFPUTIL_PC_NO_PACKET_IN
) {
2809 /* XXX install 'drop' flow entry */
2810 COVERAGE_INC(ofproto_dpif_no_packet_in
);
2812 const struct ofpbuf
*packet
;
2814 LIST_FOR_EACH (packet
, list_node
, &miss
->packets
) {
2815 send_packet_in_miss(ofproto
, packet
, &miss
->flow
);
2820 /* Handles flow miss 'miss' on 'ofproto'. May add any required datapath
2821 * operations to 'ops', incrementing '*n_ops' for each new op. */
2823 handle_flow_miss(struct ofproto_dpif
*ofproto
, struct flow_miss
*miss
,
2824 struct flow_miss_op
*ops
, size_t *n_ops
)
2826 struct facet
*facet
;
2829 /* The caller must ensure that miss->hmap_node.hash contains
2830 * flow_hash(miss->flow, 0). */
2831 hash
= miss
->hmap_node
.hash
;
2833 facet
= facet_lookup_valid(ofproto
, &miss
->flow
, hash
);
2835 struct rule_dpif
*rule
= rule_dpif_lookup(ofproto
, &miss
->flow
, 0);
2837 handle_flow_miss_no_rule(ofproto
, miss
);
2839 } else if (!flow_miss_should_make_facet(ofproto
, miss
, hash
)) {
2840 handle_flow_miss_without_facet(miss
, rule
, ops
, n_ops
);
2844 facet
= facet_create(rule
, &miss
->flow
, hash
);
2846 handle_flow_miss_with_facet(miss
, facet
, ops
, n_ops
);
2849 /* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
2850 * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
2851 * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
2852 * what a flow key should contain.
2854 * This function also includes some logic to help make VLAN splinters
2855 * transparent to the rest of the upcall processing logic. In particular, if
2856 * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
2857 * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
2858 * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
2860 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
2861 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
2862 * (This differs from the value returned in flow->vlan_tci only for packets
2863 * received on VLAN splinters.)
2865 static enum odp_key_fitness
2866 ofproto_dpif_extract_flow_key(const struct ofproto_dpif
*ofproto
,
2867 const struct nlattr
*key
, size_t key_len
,
2868 struct flow
*flow
, ovs_be16
*initial_tci
,
2869 struct ofpbuf
*packet
)
2871 enum odp_key_fitness fitness
;
2875 fitness
= odp_flow_key_to_flow(key
, key_len
, flow
);
2876 if (fitness
== ODP_FIT_ERROR
) {
2879 *initial_tci
= flow
->vlan_tci
;
2881 realdev
= vsp_vlandev_to_realdev(ofproto
, flow
->in_port
, &vid
);
2883 /* Cause the flow to be processed as if it came in on the real device
2884 * with the VLAN device's VLAN ID. */
2885 flow
->in_port
= realdev
;
2886 flow
->vlan_tci
= htons((vid
& VLAN_VID_MASK
) | VLAN_CFI
);
2888 /* Make the packet resemble the flow, so that it gets sent to an
2889 * OpenFlow controller properly, so that it looks correct for
2890 * sFlow, and so that flow_extract() will get the correct vlan_tci
2891 * if it is called on 'packet'.
2893 * The allocated space inside 'packet' probably also contains
2894 * 'key', that is, both 'packet' and 'key' are probably part of a
2895 * struct dpif_upcall (see the large comment on that structure
2896 * definition), so pushing data on 'packet' is in general not a
2897 * good idea since it could overwrite 'key' or free it as a side
2898 * effect. However, it's OK in this special case because we know
2899 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
2900 * will just overwrite the 4-byte "struct nlattr", which is fine
2901 * since we don't need that header anymore. */
2902 eth_push_vlan(packet
, flow
->vlan_tci
);
2905 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
2906 if (fitness
== ODP_FIT_PERFECT
) {
2907 fitness
= ODP_FIT_TOO_MUCH
;
2915 handle_miss_upcalls(struct ofproto_dpif
*ofproto
, struct dpif_upcall
*upcalls
,
2918 struct dpif_upcall
*upcall
;
2919 struct flow_miss
*miss
;
2920 struct flow_miss misses
[FLOW_MISS_MAX_BATCH
];
2921 struct flow_miss_op flow_miss_ops
[FLOW_MISS_MAX_BATCH
* 2];
2922 struct dpif_op
*dpif_ops
[FLOW_MISS_MAX_BATCH
* 2];
2932 /* Construct the to-do list.
2934 * This just amounts to extracting the flow from each packet and sticking
2935 * the packets that have the same flow in the same "flow_miss" structure so
2936 * that we can process them together. */
2939 for (upcall
= upcalls
; upcall
< &upcalls
[n_upcalls
]; upcall
++) {
2940 struct flow_miss
*miss
= &misses
[n_misses
];
2941 struct flow_miss
*existing_miss
;
2944 /* Obtain metadata and check userspace/kernel agreement on flow match,
2945 * then set 'flow''s header pointers. */
2946 miss
->key_fitness
= ofproto_dpif_extract_flow_key(
2947 ofproto
, upcall
->key
, upcall
->key_len
,
2948 &miss
->flow
, &miss
->initial_tci
, upcall
->packet
);
2949 if (miss
->key_fitness
== ODP_FIT_ERROR
) {
2952 flow_extract(upcall
->packet
, miss
->flow
.skb_priority
,
2953 miss
->flow
.tun_id
, miss
->flow
.in_port
, &miss
->flow
);
2955 /* Handle 802.1ag, LACP, and STP specially. */
2956 if (process_special(ofproto
, &miss
->flow
, upcall
->packet
)) {
2957 ofproto_update_local_port_stats(&ofproto
->up
,
2958 0, upcall
->packet
->size
);
2959 ofproto
->n_matches
++;
2963 /* Add other packets to a to-do list. */
2964 hash
= flow_hash(&miss
->flow
, 0);
2965 existing_miss
= flow_miss_find(&todo
, &miss
->flow
, hash
);
2966 if (!existing_miss
) {
2967 hmap_insert(&todo
, &miss
->hmap_node
, hash
);
2968 miss
->key
= upcall
->key
;
2969 miss
->key_len
= upcall
->key_len
;
2970 list_init(&miss
->packets
);
2974 miss
= existing_miss
;
2976 list_push_back(&miss
->packets
, &upcall
->packet
->list_node
);
2979 /* Process each element in the to-do list, constructing the set of
2980 * operations to batch. */
2982 HMAP_FOR_EACH (miss
, hmap_node
, &todo
) {
2983 handle_flow_miss(ofproto
, miss
, flow_miss_ops
, &n_ops
);
2985 assert(n_ops
<= ARRAY_SIZE(flow_miss_ops
));
2987 /* Execute batch. */
2988 for (i
= 0; i
< n_ops
; i
++) {
2989 dpif_ops
[i
] = &flow_miss_ops
[i
].dpif_op
;
2991 dpif_operate(ofproto
->dpif
, dpif_ops
, n_ops
);
2993 /* Free memory and update facets. */
2994 for (i
= 0; i
< n_ops
; i
++) {
2995 struct flow_miss_op
*op
= &flow_miss_ops
[i
];
2997 switch (op
->dpif_op
.type
) {
2998 case DPIF_OP_EXECUTE
:
3001 case DPIF_OP_FLOW_PUT
:
3002 if (!op
->dpif_op
.error
) {
3003 op
->subfacet
->installed
= true;
3007 case DPIF_OP_FLOW_DEL
:
3013 hmap_destroy(&todo
);
3017 handle_userspace_upcall(struct ofproto_dpif
*ofproto
,
3018 struct dpif_upcall
*upcall
)
3020 struct user_action_cookie cookie
;
3021 enum odp_key_fitness fitness
;
3022 ovs_be16 initial_tci
;
3025 memcpy(&cookie
, &upcall
->userdata
, sizeof(cookie
));
3027 fitness
= ofproto_dpif_extract_flow_key(ofproto
, upcall
->key
,
3028 upcall
->key_len
, &flow
,
3029 &initial_tci
, upcall
->packet
);
3030 if (fitness
== ODP_FIT_ERROR
) {
3034 if (cookie
.type
== USER_ACTION_COOKIE_SFLOW
) {
3035 if (ofproto
->sflow
) {
3036 dpif_sflow_received(ofproto
->sflow
, upcall
->packet
, &flow
,
3040 VLOG_WARN_RL(&rl
, "invalid user cookie : 0x%"PRIx64
, upcall
->userdata
);
3045 handle_upcalls(struct ofproto_dpif
*ofproto
, unsigned int max_batch
)
3047 struct dpif_upcall misses
[FLOW_MISS_MAX_BATCH
];
3048 struct ofpbuf miss_bufs
[FLOW_MISS_MAX_BATCH
];
3049 uint64_t miss_buf_stubs
[FLOW_MISS_MAX_BATCH
][4096 / 8];
3054 assert(max_batch
<= FLOW_MISS_MAX_BATCH
);
3058 for (n_processed
= 0; n_processed
< max_batch
; n_processed
++) {
3059 struct dpif_upcall
*upcall
= &misses
[n_misses
];
3060 struct ofpbuf
*buf
= &miss_bufs
[n_misses
];
3063 ofpbuf_use_stub(buf
, miss_buf_stubs
[n_misses
],
3064 sizeof miss_buf_stubs
[n_misses
]);
3065 error
= dpif_recv(ofproto
->dpif
, upcall
, buf
);
3071 switch (upcall
->type
) {
3072 case DPIF_UC_ACTION
:
3073 handle_userspace_upcall(ofproto
, upcall
);
3078 /* Handle it later. */
3082 case DPIF_N_UC_TYPES
:
3084 VLOG_WARN_RL(&rl
, "upcall has unexpected type %"PRIu32
,
3090 handle_miss_upcalls(ofproto
, misses
, n_misses
);
3091 for (i
= 0; i
< n_misses
; i
++) {
3092 ofpbuf_uninit(&miss_bufs
[i
]);
3098 /* Flow expiration. */
3100 static int subfacet_max_idle(const struct ofproto_dpif
*);
3101 static void update_stats(struct ofproto_dpif
*);
3102 static void rule_expire(struct rule_dpif
*);
3103 static void expire_subfacets(struct ofproto_dpif
*, int dp_max_idle
);
3105 /* This function is called periodically by run(). Its job is to collect
3106 * updates for the flows that have been installed into the datapath, most
3107 * importantly when they last were used, and then use that information to
3108 * expire flows that have not been used recently.
3110 * Returns the number of milliseconds after which it should be called again. */
3112 expire(struct ofproto_dpif
*ofproto
)
3114 struct rule_dpif
*rule
, *next_rule
;
3115 struct oftable
*table
;
3118 /* Update stats for each flow in the datapath. */
3119 update_stats(ofproto
);
3121 /* Expire subfacets that have been idle too long. */
3122 dp_max_idle
= subfacet_max_idle(ofproto
);
3123 expire_subfacets(ofproto
, dp_max_idle
);
3125 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
3126 OFPROTO_FOR_EACH_TABLE (table
, &ofproto
->up
) {
3127 struct cls_cursor cursor
;
3129 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
3130 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, up
.cr
, &cursor
) {
3135 /* All outstanding data in existing flows has been accounted, so it's a
3136 * good time to do bond rebalancing. */
3137 if (ofproto
->has_bonded_bundles
) {
3138 struct ofbundle
*bundle
;
3140 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
3142 bond_rebalance(bundle
->bond
, &ofproto
->revalidate_set
);
3147 return MIN(dp_max_idle
, 1000);
3150 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3152 * This function also pushes statistics updates to rules which each facet
3153 * resubmits into. Generally these statistics will be accurate. However, if a
3154 * facet changes the rule it resubmits into at some time in between
3155 * update_stats() runs, it is possible that statistics accrued to the
3156 * old rule will be incorrectly attributed to the new rule. This could be
3157 * avoided by calling update_stats() whenever rules are created or
3158 * deleted. However, the performance impact of making so many calls to the
3159 * datapath do not justify the benefit of having perfectly accurate statistics.
3162 update_stats(struct ofproto_dpif
*p
)
3164 const struct dpif_flow_stats
*stats
;
3165 struct dpif_flow_dump dump
;
3166 const struct nlattr
*key
;
3169 dpif_flow_dump_start(&dump
, p
->dpif
);
3170 while (dpif_flow_dump_next(&dump
, &key
, &key_len
, NULL
, NULL
, &stats
)) {
3171 struct subfacet
*subfacet
;
3173 subfacet
= subfacet_find(p
, key
, key_len
);
3174 if (subfacet
&& subfacet
->installed
) {
3175 struct facet
*facet
= subfacet
->facet
;
3177 if (stats
->n_packets
>= subfacet
->dp_packet_count
) {
3178 uint64_t extra
= stats
->n_packets
- subfacet
->dp_packet_count
;
3179 facet
->packet_count
+= extra
;
3181 VLOG_WARN_RL(&rl
, "unexpected packet count from the datapath");
3184 if (stats
->n_bytes
>= subfacet
->dp_byte_count
) {
3185 facet
->byte_count
+= stats
->n_bytes
- subfacet
->dp_byte_count
;
3187 VLOG_WARN_RL(&rl
, "unexpected byte count from datapath");
3190 subfacet
->dp_packet_count
= stats
->n_packets
;
3191 subfacet
->dp_byte_count
= stats
->n_bytes
;
3193 facet
->tcp_flags
|= stats
->tcp_flags
;
3195 subfacet_update_time(subfacet
, stats
->used
);
3196 if (facet
->accounted_bytes
< facet
->byte_count
) {
3198 facet_account(facet
);
3199 facet
->accounted_bytes
= facet
->byte_count
;
3201 facet_push_stats(facet
);
3203 if (!VLOG_DROP_WARN(&rl
)) {
3207 odp_flow_key_format(key
, key_len
, &s
);
3208 VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s
));
3212 COVERAGE_INC(facet_unexpected
);
3213 /* There's a flow in the datapath that we know nothing about, or a
3214 * flow that shouldn't be installed but was anyway. Delete it. */
3215 dpif_flow_del(p
->dpif
, key
, key_len
, NULL
);
3218 dpif_flow_dump_done(&dump
);
3221 /* Calculates and returns the number of milliseconds of idle time after which
3222 * subfacets should expire from the datapath. When a subfacet expires, we fold
3223 * its statistics into its facet, and when a facet's last subfacet expires, we
3224 * fold its statistic into its rule. */
3226 subfacet_max_idle(const struct ofproto_dpif
*ofproto
)
3229 * Idle time histogram.
3231 * Most of the time a switch has a relatively small number of subfacets.
3232 * When this is the case we might as well keep statistics for all of them
3233 * in userspace and to cache them in the kernel datapath for performance as
3236 * As the number of subfacets increases, the memory required to maintain
3237 * statistics about them in userspace and in the kernel becomes
3238 * significant. However, with a large number of subfacets it is likely
3239 * that only a few of them are "heavy hitters" that consume a large amount
3240 * of bandwidth. At this point, only heavy hitters are worth caching in
3241 * the kernel and maintaining in userspaces; other subfacets we can
3244 * The technique used to compute the idle time is to build a histogram with
3245 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3246 * that is installed in the kernel gets dropped in the appropriate bucket.
3247 * After the histogram has been built, we compute the cutoff so that only
3248 * the most-recently-used 1% of subfacets (but at least
3249 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3250 * the most-recently-used bucket of subfacets is kept, so actually an
3251 * arbitrary number of subfacets can be kept in any given expiration run
3252 * (though the next run will delete most of those unless they receive
3255 * This requires a second pass through the subfacets, in addition to the
3256 * pass made by update_stats(), because the former function never looks at
3257 * uninstallable subfacets.
3259 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
3260 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
3261 int buckets
[N_BUCKETS
] = { 0 };
3262 int total
, subtotal
, bucket
;
3263 struct subfacet
*subfacet
;
3267 total
= hmap_count(&ofproto
->subfacets
);
3268 if (total
<= ofproto
->up
.flow_eviction_threshold
) {
3269 return N_BUCKETS
* BUCKET_WIDTH
;
3272 /* Build histogram. */
3274 HMAP_FOR_EACH (subfacet
, hmap_node
, &ofproto
->subfacets
) {
3275 long long int idle
= now
- subfacet
->used
;
3276 int bucket
= (idle
<= 0 ? 0
3277 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
3278 : (unsigned int) idle
/ BUCKET_WIDTH
);
3282 /* Find the first bucket whose flows should be expired. */
3283 subtotal
= bucket
= 0;
3285 subtotal
+= buckets
[bucket
++];
3286 } while (bucket
< N_BUCKETS
&&
3287 subtotal
< MAX(ofproto
->up
.flow_eviction_threshold
, total
/ 100));
3289 if (VLOG_IS_DBG_ENABLED()) {
3293 ds_put_cstr(&s
, "keep");
3294 for (i
= 0; i
< N_BUCKETS
; i
++) {
3296 ds_put_cstr(&s
, ", drop");
3299 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
3302 VLOG_INFO("%s: %s (msec:count)", ofproto
->up
.name
, ds_cstr(&s
));
3306 return bucket
* BUCKET_WIDTH
;
3309 enum { EXPIRE_MAX_BATCH
= 50 };
3312 expire_batch(struct ofproto_dpif
*ofproto
, struct subfacet
**subfacets
, int n
)
3314 struct odputil_keybuf keybufs
[EXPIRE_MAX_BATCH
];
3315 struct dpif_op ops
[EXPIRE_MAX_BATCH
];
3316 struct dpif_op
*opsp
[EXPIRE_MAX_BATCH
];
3317 struct ofpbuf keys
[EXPIRE_MAX_BATCH
];
3318 struct dpif_flow_stats stats
[EXPIRE_MAX_BATCH
];
3321 for (i
= 0; i
< n
; i
++) {
3322 ops
[i
].type
= DPIF_OP_FLOW_DEL
;
3323 subfacet_get_key(subfacets
[i
], &keybufs
[i
], &keys
[i
]);
3324 ops
[i
].u
.flow_del
.key
= keys
[i
].data
;
3325 ops
[i
].u
.flow_del
.key_len
= keys
[i
].size
;
3326 ops
[i
].u
.flow_del
.stats
= &stats
[i
];
3330 dpif_operate(ofproto
->dpif
, opsp
, n
);
3331 for (i
= 0; i
< n
; i
++) {
3332 subfacet_reset_dp_stats(subfacets
[i
], &stats
[i
]);
3333 subfacets
[i
]->installed
= false;
3334 subfacet_destroy(subfacets
[i
]);
3339 expire_subfacets(struct ofproto_dpif
*ofproto
, int dp_max_idle
)
3341 long long int cutoff
= time_msec() - dp_max_idle
;
3343 struct subfacet
*subfacet
, *next_subfacet
;
3344 struct subfacet
*batch
[EXPIRE_MAX_BATCH
];
3348 HMAP_FOR_EACH_SAFE (subfacet
, next_subfacet
, hmap_node
,
3349 &ofproto
->subfacets
) {
3350 if (subfacet
->used
< cutoff
) {
3351 if (subfacet
->installed
) {
3352 batch
[n_batch
++] = subfacet
;
3353 if (n_batch
>= EXPIRE_MAX_BATCH
) {
3354 expire_batch(ofproto
, batch
, n_batch
);
3358 subfacet_destroy(subfacet
);
3364 expire_batch(ofproto
, batch
, n_batch
);
3368 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3369 * then delete it entirely. */
3371 rule_expire(struct rule_dpif
*rule
)
3373 struct facet
*facet
, *next_facet
;
3377 /* Has 'rule' expired? */
3379 if (rule
->up
.hard_timeout
3380 && now
> rule
->up
.modified
+ rule
->up
.hard_timeout
* 1000) {
3381 reason
= OFPRR_HARD_TIMEOUT
;
3382 } else if (rule
->up
.idle_timeout
3383 && now
> rule
->up
.used
+ rule
->up
.idle_timeout
* 1000) {
3384 reason
= OFPRR_IDLE_TIMEOUT
;
3389 COVERAGE_INC(ofproto_dpif_expired
);
3391 /* Update stats. (This is a no-op if the rule expired due to an idle
3392 * timeout, because that only happens when the rule has no facets left.) */
3393 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
3394 facet_remove(facet
);
3397 /* Get rid of the rule. */
3398 ofproto_rule_expire(&rule
->up
, reason
);
3403 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
3405 * The caller must already have determined that no facet with an identical
3406 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
3407 * the ofproto's classifier table.
3409 * 'hash' must be the return value of flow_hash(flow, 0).
3411 * The facet will initially have no subfacets. The caller should create (at
3412 * least) one subfacet with subfacet_create(). */
3413 static struct facet
*
3414 facet_create(struct rule_dpif
*rule
, const struct flow
*flow
, uint32_t hash
)
3416 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3417 struct facet
*facet
;
3419 facet
= xzalloc(sizeof *facet
);
3420 facet
->used
= time_msec();
3421 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, hash
);
3422 list_push_back(&rule
->facets
, &facet
->list_node
);
3424 facet
->flow
= *flow
;
3425 list_init(&facet
->subfacets
);
3426 netflow_flow_init(&facet
->nf_flow
);
3427 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
3433 facet_free(struct facet
*facet
)
3438 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
3439 * 'packet', which arrived on 'in_port'.
3441 * Takes ownership of 'packet'. */
3443 execute_odp_actions(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
3444 const struct nlattr
*odp_actions
, size_t actions_len
,
3445 struct ofpbuf
*packet
)
3447 struct odputil_keybuf keybuf
;
3451 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
3452 odp_flow_key_from_flow(&key
, flow
);
3454 error
= dpif_execute(ofproto
->dpif
, key
.data
, key
.size
,
3455 odp_actions
, actions_len
, packet
);
3457 ofpbuf_delete(packet
);
3461 /* Remove 'facet' from 'ofproto' and free up the associated memory:
3463 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3464 * rule's statistics, via subfacet_uninstall().
3466 * - Removes 'facet' from its rule and from ofproto->facets.
3469 facet_remove(struct facet
*facet
)
3471 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3472 struct subfacet
*subfacet
, *next_subfacet
;
3474 assert(!list_is_empty(&facet
->subfacets
));
3476 /* First uninstall all of the subfacets to get final statistics. */
3477 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
3478 subfacet_uninstall(subfacet
);
3481 /* Flush the final stats to the rule.
3483 * This might require us to have at least one subfacet around so that we
3484 * can use its actions for accounting in facet_account(), which is why we
3485 * have uninstalled but not yet destroyed the subfacets. */
3486 facet_flush_stats(facet
);
3488 /* Now we're really all done so destroy everything. */
3489 LIST_FOR_EACH_SAFE (subfacet
, next_subfacet
, list_node
,
3490 &facet
->subfacets
) {
3491 subfacet_destroy__(subfacet
);
3493 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
3494 list_remove(&facet
->list_node
);
3498 /* Feed information from 'facet' back into the learning table to keep it in
3499 * sync with what is actually flowing through the datapath. */
3501 facet_learn(struct facet
*facet
)
3503 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3504 struct action_xlate_ctx ctx
;
3506 if (!facet
->has_learn
3507 && !facet
->has_normal
3508 && (!facet
->has_fin_timeout
3509 || !(facet
->tcp_flags
& (TCP_FIN
| TCP_RST
)))) {
3513 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
3514 facet
->flow
.vlan_tci
,
3515 facet
->rule
, facet
->tcp_flags
, NULL
);
3516 ctx
.may_learn
= true;
3517 xlate_actions_for_side_effects(&ctx
, facet
->rule
->up
.actions
,
3518 facet
->rule
->up
.n_actions
);
3522 facet_account(struct facet
*facet
)
3524 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3525 struct subfacet
*subfacet
;
3526 const struct nlattr
*a
;
3531 if (!facet
->has_normal
|| !ofproto
->has_bonded_bundles
) {
3534 n_bytes
= facet
->byte_count
- facet
->accounted_bytes
;
3536 /* This loop feeds byte counters to bond_account() for rebalancing to use
3537 * as a basis. We also need to track the actual VLAN on which the packet
3538 * is going to be sent to ensure that it matches the one passed to
3539 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3542 * We use the actions from an arbitrary subfacet because they should all
3543 * be equally valid for our purpose. */
3544 subfacet
= CONTAINER_OF(list_front(&facet
->subfacets
),
3545 struct subfacet
, list_node
);
3546 vlan_tci
= facet
->flow
.vlan_tci
;
3547 NL_ATTR_FOR_EACH_UNSAFE (a
, left
,
3548 subfacet
->actions
, subfacet
->actions_len
) {
3549 const struct ovs_action_push_vlan
*vlan
;
3550 struct ofport_dpif
*port
;
3552 switch (nl_attr_type(a
)) {
3553 case OVS_ACTION_ATTR_OUTPUT
:
3554 port
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
3555 if (port
&& port
->bundle
&& port
->bundle
->bond
) {
3556 bond_account(port
->bundle
->bond
, &facet
->flow
,
3557 vlan_tci_to_vid(vlan_tci
), n_bytes
);
3561 case OVS_ACTION_ATTR_POP_VLAN
:
3562 vlan_tci
= htons(0);
3565 case OVS_ACTION_ATTR_PUSH_VLAN
:
3566 vlan
= nl_attr_get(a
);
3567 vlan_tci
= vlan
->vlan_tci
;
3573 /* Returns true if the only action for 'facet' is to send to the controller.
3574 * (We don't report NetFlow expiration messages for such facets because they
3575 * are just part of the control logic for the network, not real traffic). */
3577 facet_is_controller_flow(struct facet
*facet
)
3580 && facet
->rule
->up
.n_actions
== 1
3581 && action_outputs_to_port(&facet
->rule
->up
.actions
[0],
3582 htons(OFPP_CONTROLLER
)));
3585 /* Folds all of 'facet''s statistics into its rule. Also updates the
3586 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
3587 * 'facet''s statistics in the datapath should have been zeroed and folded into
3588 * its packet and byte counts before this function is called. */
3590 facet_flush_stats(struct facet
*facet
)
3592 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3593 struct subfacet
*subfacet
;
3595 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
3596 assert(!subfacet
->dp_byte_count
);
3597 assert(!subfacet
->dp_packet_count
);
3600 facet_push_stats(facet
);
3601 if (facet
->accounted_bytes
< facet
->byte_count
) {
3602 facet_account(facet
);
3603 facet
->accounted_bytes
= facet
->byte_count
;
3606 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
3607 struct ofexpired expired
;
3608 expired
.flow
= facet
->flow
;
3609 expired
.packet_count
= facet
->packet_count
;
3610 expired
.byte_count
= facet
->byte_count
;
3611 expired
.used
= facet
->used
;
3612 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
3615 facet
->rule
->packet_count
+= facet
->packet_count
;
3616 facet
->rule
->byte_count
+= facet
->byte_count
;
3618 /* Reset counters to prevent double counting if 'facet' ever gets
3620 facet_reset_counters(facet
);
3622 netflow_flow_clear(&facet
->nf_flow
);
3623 facet
->tcp_flags
= 0;
3626 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3627 * Returns it if found, otherwise a null pointer.
3629 * 'hash' must be the return value of flow_hash(flow, 0).
3631 * The returned facet might need revalidation; use facet_lookup_valid()
3632 * instead if that is important. */
3633 static struct facet
*
3634 facet_find(struct ofproto_dpif
*ofproto
,
3635 const struct flow
*flow
, uint32_t hash
)
3637 struct facet
*facet
;
3639 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, hash
, &ofproto
->facets
) {
3640 if (flow_equal(flow
, &facet
->flow
)) {
3648 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3649 * Returns it if found, otherwise a null pointer.
3651 * 'hash' must be the return value of flow_hash(flow, 0).
3653 * The returned facet is guaranteed to be valid. */
3654 static struct facet
*
3655 facet_lookup_valid(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
3658 struct facet
*facet
= facet_find(ofproto
, flow
, hash
);
3660 /* The facet we found might not be valid, since we could be in need of
3661 * revalidation. If it is not valid, don't return it. */
3663 && (ofproto
->need_revalidate
3664 || tag_set_intersects(&ofproto
->revalidate_set
, facet
->tags
))
3665 && !facet_revalidate(facet
)) {
3666 COVERAGE_INC(facet_invalidated
);
3674 facet_check_consistency(struct facet
*facet
)
3676 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 15);
3678 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3680 uint64_t odp_actions_stub
[1024 / 8];
3681 struct ofpbuf odp_actions
;
3683 struct rule_dpif
*rule
;
3684 struct subfacet
*subfacet
;
3685 bool may_log
= false;
3688 /* Check the rule for consistency. */
3689 rule
= rule_dpif_lookup(ofproto
, &facet
->flow
, 0);
3691 if (!VLOG_DROP_WARN(&rl
)) {
3692 char *s
= flow_to_string(&facet
->flow
);
3693 VLOG_WARN("%s: facet should not exist", s
);
3697 } else if (rule
!= facet
->rule
) {
3698 may_log
= !VLOG_DROP_WARN(&rl
);
3704 flow_format(&s
, &facet
->flow
);
3705 ds_put_format(&s
, ": facet associated with wrong rule (was "
3706 "table=%"PRIu8
",", facet
->rule
->up
.table_id
);
3707 cls_rule_format(&facet
->rule
->up
.cr
, &s
);
3708 ds_put_format(&s
, ") (should have been table=%"PRIu8
",",
3710 cls_rule_format(&rule
->up
.cr
, &s
);
3711 ds_put_char(&s
, ')');
3713 VLOG_WARN("%s", ds_cstr(&s
));
3720 /* Check the datapath actions for consistency. */
3721 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
3722 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
3723 struct action_xlate_ctx ctx
;
3724 bool actions_changed
;
3725 bool should_install
;
3727 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
3728 subfacet
->initial_tci
, rule
, 0, NULL
);
3729 xlate_actions(&ctx
, rule
->up
.actions
, rule
->up
.n_actions
,
3732 should_install
= (ctx
.may_set_up_flow
3733 && subfacet
->key_fitness
!= ODP_FIT_TOO_LITTLE
);
3734 if (!should_install
&& !subfacet
->installed
) {
3735 /* The actions for uninstallable flows may vary from one packet to
3736 * the next, so don't compare the actions. */
3740 actions_changed
= (subfacet
->actions_len
!= odp_actions
.size
3741 || memcmp(subfacet
->actions
, odp_actions
.data
,
3742 subfacet
->actions_len
));
3743 if (should_install
!= subfacet
->installed
|| actions_changed
) {
3745 may_log
= !VLOG_DROP_WARN(&rl
);
3750 struct odputil_keybuf keybuf
;
3755 subfacet_get_key(subfacet
, &keybuf
, &key
);
3756 odp_flow_key_format(key
.data
, key
.size
, &s
);
3758 ds_put_cstr(&s
, ": inconsistency in subfacet");
3759 if (should_install
!= subfacet
->installed
) {
3760 enum odp_key_fitness fitness
= subfacet
->key_fitness
;
3762 ds_put_format(&s
, " (should%s have been installed)",
3763 should_install
? "" : " not");
3764 ds_put_format(&s
, " (may_set_up_flow=%s, fitness=%s)",
3765 ctx
.may_set_up_flow
? "true" : "false",
3766 odp_key_fitness_to_string(fitness
));
3768 if (actions_changed
) {
3769 ds_put_cstr(&s
, " (actions were: ");
3770 format_odp_actions(&s
, subfacet
->actions
,
3771 subfacet
->actions_len
);
3772 ds_put_cstr(&s
, ") (correct actions: ");
3773 format_odp_actions(&s
, odp_actions
.data
, odp_actions
.size
);
3774 ds_put_char(&s
, ')');
3776 ds_put_cstr(&s
, " (actions: ");
3777 format_odp_actions(&s
, subfacet
->actions
,
3778 subfacet
->actions_len
);
3779 ds_put_char(&s
, ')');
3781 VLOG_WARN("%s", ds_cstr(&s
));
3786 ofpbuf_uninit(&odp_actions
);
3791 /* Re-searches the classifier for 'facet':
3793 * - If the rule found is different from 'facet''s current rule, moves
3794 * 'facet' to the new rule and recompiles its actions.
3796 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
3797 * where it is and recompiles its actions anyway.
3799 * - If there is none, destroys 'facet'.
3801 * Returns true if 'facet' still exists, false if it has been destroyed. */
3803 facet_revalidate(struct facet
*facet
)
3805 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3807 struct nlattr
*odp_actions
;
3810 struct actions
*new_actions
;
3812 struct action_xlate_ctx ctx
;
3813 uint64_t odp_actions_stub
[1024 / 8];
3814 struct ofpbuf odp_actions
;
3816 struct rule_dpif
*new_rule
;
3817 struct subfacet
*subfacet
;
3818 bool actions_changed
;
3821 COVERAGE_INC(facet_revalidate
);
3823 /* Determine the new rule. */
3824 new_rule
= rule_dpif_lookup(ofproto
, &facet
->flow
, 0);
3826 /* No new rule, so delete the facet. */
3827 facet_remove(facet
);
3831 /* Calculate new datapath actions.
3833 * We do not modify any 'facet' state yet, because we might need to, e.g.,
3834 * emit a NetFlow expiration and, if so, we need to have the old state
3835 * around to properly compose it. */
3837 /* If the datapath actions changed or the installability changed,
3838 * then we need to talk to the datapath. */
3841 memset(&ctx
, 0, sizeof ctx
);
3842 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
3843 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
3844 bool should_install
;
3846 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
,
3847 subfacet
->initial_tci
, new_rule
, 0, NULL
);
3848 xlate_actions(&ctx
, new_rule
->up
.actions
, new_rule
->up
.n_actions
,
3850 actions_changed
= (subfacet
->actions_len
!= odp_actions
.size
3851 || memcmp(subfacet
->actions
, odp_actions
.data
,
3852 subfacet
->actions_len
));
3854 should_install
= (ctx
.may_set_up_flow
3855 && subfacet
->key_fitness
!= ODP_FIT_TOO_LITTLE
);
3856 if (actions_changed
|| should_install
!= subfacet
->installed
) {
3857 if (should_install
) {
3858 struct dpif_flow_stats stats
;
3860 subfacet_install(subfacet
,
3861 odp_actions
.data
, odp_actions
.size
, &stats
);
3862 subfacet_update_stats(subfacet
, &stats
);
3864 subfacet_uninstall(subfacet
);
3868 new_actions
= xcalloc(list_size(&facet
->subfacets
),
3869 sizeof *new_actions
);
3871 new_actions
[i
].odp_actions
= xmemdup(odp_actions
.data
,
3873 new_actions
[i
].actions_len
= odp_actions
.size
;
3878 ofpbuf_uninit(&odp_actions
);
3881 facet_flush_stats(facet
);
3884 /* Update 'facet' now that we've taken care of all the old state. */
3885 facet
->tags
= ctx
.tags
;
3886 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
3887 facet
->may_install
= ctx
.may_set_up_flow
;
3888 facet
->has_learn
= ctx
.has_learn
;
3889 facet
->has_normal
= ctx
.has_normal
;
3890 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
3891 facet
->mirrors
= ctx
.mirrors
;
3894 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
3895 if (new_actions
[i
].odp_actions
) {
3896 free(subfacet
->actions
);
3897 subfacet
->actions
= new_actions
[i
].odp_actions
;
3898 subfacet
->actions_len
= new_actions
[i
].actions_len
;
3904 if (facet
->rule
!= new_rule
) {
3905 COVERAGE_INC(facet_changed_rule
);
3906 list_remove(&facet
->list_node
);
3907 list_push_back(&new_rule
->facets
, &facet
->list_node
);
3908 facet
->rule
= new_rule
;
3909 facet
->used
= new_rule
->up
.created
;
3910 facet
->prev_used
= facet
->used
;
3916 /* Updates 'facet''s used time. Caller is responsible for calling
3917 * facet_push_stats() to update the flows which 'facet' resubmits into. */
3919 facet_update_time(struct facet
*facet
, long long int used
)
3921 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
3922 if (used
> facet
->used
) {
3924 ofproto_rule_update_used(&facet
->rule
->up
, used
);
3925 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
3930 facet_reset_counters(struct facet
*facet
)
3932 facet
->packet_count
= 0;
3933 facet
->byte_count
= 0;
3934 facet
->prev_packet_count
= 0;
3935 facet
->prev_byte_count
= 0;
3936 facet
->accounted_bytes
= 0;
3940 facet_push_stats(struct facet
*facet
)
3942 struct dpif_flow_stats stats
;
3944 assert(facet
->packet_count
>= facet
->prev_packet_count
);
3945 assert(facet
->byte_count
>= facet
->prev_byte_count
);
3946 assert(facet
->used
>= facet
->prev_used
);
3948 stats
.n_packets
= facet
->packet_count
- facet
->prev_packet_count
;
3949 stats
.n_bytes
= facet
->byte_count
- facet
->prev_byte_count
;
3950 stats
.used
= facet
->used
;
3951 stats
.tcp_flags
= 0;
3953 if (stats
.n_packets
|| stats
.n_bytes
|| facet
->used
> facet
->prev_used
) {
3954 facet
->prev_packet_count
= facet
->packet_count
;
3955 facet
->prev_byte_count
= facet
->byte_count
;
3956 facet
->prev_used
= facet
->used
;
3958 flow_push_stats(facet
->rule
, &facet
->flow
, &stats
);
3960 update_mirror_stats(ofproto_dpif_cast(facet
->rule
->up
.ofproto
),
3961 facet
->mirrors
, stats
.n_packets
, stats
.n_bytes
);
3966 rule_credit_stats(struct rule_dpif
*rule
, const struct dpif_flow_stats
*stats
)
3968 rule
->packet_count
+= stats
->n_packets
;
3969 rule
->byte_count
+= stats
->n_bytes
;
3970 ofproto_rule_update_used(&rule
->up
, stats
->used
);
3973 /* Pushes flow statistics to the rules which 'flow' resubmits into given
3974 * 'rule''s actions and mirrors. */
3976 flow_push_stats(struct rule_dpif
*rule
,
3977 const struct flow
*flow
, const struct dpif_flow_stats
*stats
)
3979 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
3980 struct action_xlate_ctx ctx
;
3982 ofproto_rule_update_used(&rule
->up
, stats
->used
);
3984 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
, rule
,
3986 ctx
.resubmit_stats
= stats
;
3987 xlate_actions_for_side_effects(&ctx
, rule
->up
.actions
, rule
->up
.n_actions
);
3992 static struct subfacet
*
3993 subfacet_find__(struct ofproto_dpif
*ofproto
,
3994 const struct nlattr
*key
, size_t key_len
, uint32_t key_hash
,
3995 const struct flow
*flow
)
3997 struct subfacet
*subfacet
;
3999 HMAP_FOR_EACH_WITH_HASH (subfacet
, hmap_node
, key_hash
,
4000 &ofproto
->subfacets
) {
4002 ? (subfacet
->key_len
== key_len
4003 && !memcmp(key
, subfacet
->key
, key_len
))
4004 : flow_equal(flow
, &subfacet
->facet
->flow
)) {
4012 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4013 * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if
4014 * there is one, otherwise creates and returns a new subfacet.
4016 * If the returned subfacet is new, then subfacet->actions will be NULL, in
4017 * which case the caller must populate the actions with
4018 * subfacet_make_actions(). */
4019 static struct subfacet
*
4020 subfacet_create(struct facet
*facet
, enum odp_key_fitness key_fitness
,
4021 const struct nlattr
*key
, size_t key_len
, ovs_be16 initial_tci
)
4023 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4024 uint32_t key_hash
= odp_flow_key_hash(key
, key_len
);
4025 struct subfacet
*subfacet
;
4027 subfacet
= subfacet_find__(ofproto
, key
, key_len
, key_hash
, &facet
->flow
);
4029 if (subfacet
->facet
== facet
) {
4033 /* This shouldn't happen. */
4034 VLOG_ERR_RL(&rl
, "subfacet with wrong facet");
4035 subfacet_destroy(subfacet
);
4038 subfacet
= (list_is_empty(&facet
->subfacets
)
4039 ? &facet
->one_subfacet
4040 : xmalloc(sizeof *subfacet
));
4041 hmap_insert(&ofproto
->subfacets
, &subfacet
->hmap_node
, key_hash
);
4042 list_push_back(&facet
->subfacets
, &subfacet
->list_node
);
4043 subfacet
->facet
= facet
;
4044 subfacet
->key_fitness
= key_fitness
;
4045 if (key_fitness
!= ODP_FIT_PERFECT
) {
4046 subfacet
->key
= xmemdup(key
, key_len
);
4047 subfacet
->key_len
= key_len
;
4049 subfacet
->key
= NULL
;
4050 subfacet
->key_len
= 0;
4052 subfacet
->used
= time_msec();
4053 subfacet
->dp_packet_count
= 0;
4054 subfacet
->dp_byte_count
= 0;
4055 subfacet
->actions_len
= 0;
4056 subfacet
->actions
= NULL
;
4057 subfacet
->installed
= false;
4058 subfacet
->initial_tci
= initial_tci
;
4063 /* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
4064 * 'flow'. Returns the subfacet if one exists, otherwise NULL. */
4065 static struct subfacet
*
4066 subfacet_find(struct ofproto_dpif
*ofproto
,
4067 const struct nlattr
*key
, size_t key_len
)
4069 uint32_t key_hash
= odp_flow_key_hash(key
, key_len
);
4070 enum odp_key_fitness fitness
;
4073 fitness
= odp_flow_key_to_flow(key
, key_len
, &flow
);
4074 if (fitness
== ODP_FIT_ERROR
) {
4078 return subfacet_find__(ofproto
, key
, key_len
, key_hash
, &flow
);
4081 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4082 * its facet within 'ofproto', and frees it. */
4084 subfacet_destroy__(struct subfacet
*subfacet
)
4086 struct facet
*facet
= subfacet
->facet
;
4087 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4089 subfacet_uninstall(subfacet
);
4090 hmap_remove(&ofproto
->subfacets
, &subfacet
->hmap_node
);
4091 list_remove(&subfacet
->list_node
);
4092 free(subfacet
->key
);
4093 free(subfacet
->actions
);
4094 if (subfacet
!= &facet
->one_subfacet
) {
4099 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4100 * last remaining subfacet in its facet destroys the facet too. */
4102 subfacet_destroy(struct subfacet
*subfacet
)
4104 struct facet
*facet
= subfacet
->facet
;
4106 if (list_is_singleton(&facet
->subfacets
)) {
4107 /* facet_remove() needs at least one subfacet (it will remove it). */
4108 facet_remove(facet
);
4110 subfacet_destroy__(subfacet
);
4114 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
4115 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
4116 * for use as temporary storage. */
4118 subfacet_get_key(struct subfacet
*subfacet
, struct odputil_keybuf
*keybuf
,
4121 if (!subfacet
->key
) {
4122 ofpbuf_use_stack(key
, keybuf
, sizeof *keybuf
);
4123 odp_flow_key_from_flow(key
, &subfacet
->facet
->flow
);
4125 ofpbuf_use_const(key
, subfacet
->key
, subfacet
->key_len
);
4129 /* Composes the datapath actions for 'subfacet' based on its rule's actions.
4130 * Translates the actions into 'odp_actions', which the caller must have
4131 * initialized and is responsible for uninitializing. */
4133 subfacet_make_actions(struct subfacet
*subfacet
, const struct ofpbuf
*packet
,
4134 struct ofpbuf
*odp_actions
)
4136 struct facet
*facet
= subfacet
->facet
;
4137 struct rule_dpif
*rule
= facet
->rule
;
4138 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4140 struct action_xlate_ctx ctx
;
4142 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
, subfacet
->initial_tci
,
4144 xlate_actions(&ctx
, rule
->up
.actions
, rule
->up
.n_actions
, odp_actions
);
4145 facet
->tags
= ctx
.tags
;
4146 facet
->may_install
= ctx
.may_set_up_flow
;
4147 facet
->has_learn
= ctx
.has_learn
;
4148 facet
->has_normal
= ctx
.has_normal
;
4149 facet
->has_fin_timeout
= ctx
.has_fin_timeout
;
4150 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
4151 facet
->mirrors
= ctx
.mirrors
;
4153 if (subfacet
->actions_len
!= odp_actions
->size
4154 || memcmp(subfacet
->actions
, odp_actions
->data
, odp_actions
->size
)) {
4155 free(subfacet
->actions
);
4156 subfacet
->actions_len
= odp_actions
->size
;
4157 subfacet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
4161 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4162 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4163 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4164 * since 'subfacet' was last updated.
4166 * Returns 0 if successful, otherwise a positive errno value. */
4168 subfacet_install(struct subfacet
*subfacet
,
4169 const struct nlattr
*actions
, size_t actions_len
,
4170 struct dpif_flow_stats
*stats
)
4172 struct facet
*facet
= subfacet
->facet
;
4173 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(facet
->rule
->up
.ofproto
);
4174 struct odputil_keybuf keybuf
;
4175 enum dpif_flow_put_flags flags
;
4179 flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
4181 flags
|= DPIF_FP_ZERO_STATS
;
4184 subfacet_get_key(subfacet
, &keybuf
, &key
);
4185 ret
= dpif_flow_put(ofproto
->dpif
, flags
, key
.data
, key
.size
,
4186 actions
, actions_len
, stats
);
4189 subfacet_reset_dp_stats(subfacet
, stats
);
4195 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4197 subfacet_uninstall(struct subfacet
*subfacet
)
4199 if (subfacet
->installed
) {
4200 struct rule_dpif
*rule
= subfacet
->facet
->rule
;
4201 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4202 struct odputil_keybuf keybuf
;
4203 struct dpif_flow_stats stats
;
4207 subfacet_get_key(subfacet
, &keybuf
, &key
);
4208 error
= dpif_flow_del(ofproto
->dpif
, key
.data
, key
.size
, &stats
);
4209 subfacet_reset_dp_stats(subfacet
, &stats
);
4211 subfacet_update_stats(subfacet
, &stats
);
4213 subfacet
->installed
= false;
4215 assert(subfacet
->dp_packet_count
== 0);
4216 assert(subfacet
->dp_byte_count
== 0);
4220 /* Resets 'subfacet''s datapath statistics counters. This should be called
4221 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4222 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4223 * was reset in the datapath. 'stats' will be modified to include only
4224 * statistics new since 'subfacet' was last updated. */
4226 subfacet_reset_dp_stats(struct subfacet
*subfacet
,
4227 struct dpif_flow_stats
*stats
)
4230 && subfacet
->dp_packet_count
<= stats
->n_packets
4231 && subfacet
->dp_byte_count
<= stats
->n_bytes
) {
4232 stats
->n_packets
-= subfacet
->dp_packet_count
;
4233 stats
->n_bytes
-= subfacet
->dp_byte_count
;
4236 subfacet
->dp_packet_count
= 0;
4237 subfacet
->dp_byte_count
= 0;
4240 /* Updates 'subfacet''s used time. The caller is responsible for calling
4241 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
4243 subfacet_update_time(struct subfacet
*subfacet
, long long int used
)
4245 if (used
> subfacet
->used
) {
4246 subfacet
->used
= used
;
4247 facet_update_time(subfacet
->facet
, used
);
4251 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4253 * Because of the meaning of a subfacet's counters, it only makes sense to do
4254 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4255 * represents a packet that was sent by hand or if it represents statistics
4256 * that have been cleared out of the datapath. */
4258 subfacet_update_stats(struct subfacet
*subfacet
,
4259 const struct dpif_flow_stats
*stats
)
4261 if (stats
->n_packets
|| stats
->used
> subfacet
->used
) {
4262 struct facet
*facet
= subfacet
->facet
;
4264 subfacet_update_time(subfacet
, stats
->used
);
4265 facet
->packet_count
+= stats
->n_packets
;
4266 facet
->byte_count
+= stats
->n_bytes
;
4267 facet
->tcp_flags
|= stats
->tcp_flags
;
4268 facet_push_stats(facet
);
4269 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
4275 static struct rule_dpif
*
4276 rule_dpif_lookup(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
4279 struct cls_rule
*cls_rule
;
4280 struct classifier
*cls
;
4282 if (table_id
>= N_TABLES
) {
4286 cls
= &ofproto
->up
.tables
[table_id
].cls
;
4287 if (flow
->nw_frag
& FLOW_NW_FRAG_ANY
4288 && ofproto
->up
.frag_handling
== OFPC_FRAG_NORMAL
) {
4289 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
4290 * are unavailable. */
4291 struct flow ofpc_normal_flow
= *flow
;
4292 ofpc_normal_flow
.tp_src
= htons(0);
4293 ofpc_normal_flow
.tp_dst
= htons(0);
4294 cls_rule
= classifier_lookup(cls
, &ofpc_normal_flow
);
4296 cls_rule
= classifier_lookup(cls
, flow
);
4298 return rule_dpif_cast(rule_from_cls_rule(cls_rule
));
4302 complete_operation(struct rule_dpif
*rule
)
4304 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4306 rule_invalidate(rule
);
4308 struct dpif_completion
*c
= xmalloc(sizeof *c
);
4309 c
->op
= rule
->up
.pending
;
4310 list_push_back(&ofproto
->completions
, &c
->list_node
);
4312 ofoperation_complete(rule
->up
.pending
, 0);
4316 static struct rule
*
4319 struct rule_dpif
*rule
= xmalloc(sizeof *rule
);
4324 rule_dealloc(struct rule
*rule_
)
4326 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4331 rule_construct(struct rule
*rule_
)
4333 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4334 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4335 struct rule_dpif
*victim
;
4339 error
= validate_actions(rule
->up
.actions
, rule
->up
.n_actions
,
4340 &rule
->up
.cr
.flow
, ofproto
->max_ports
);
4345 rule
->packet_count
= 0;
4346 rule
->byte_count
= 0;
4348 victim
= rule_dpif_cast(ofoperation_get_victim(rule
->up
.pending
));
4349 if (victim
&& !list_is_empty(&victim
->facets
)) {
4350 struct facet
*facet
;
4352 rule
->facets
= victim
->facets
;
4353 list_moved(&rule
->facets
);
4354 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
4355 /* XXX: We're only clearing our local counters here. It's possible
4356 * that quite a few packets are unaccounted for in the datapath
4357 * statistics. These will be accounted to the new rule instead of
4358 * cleared as required. This could be fixed by clearing out the
4359 * datapath statistics for this facet, but currently it doesn't
4361 facet_reset_counters(facet
);
4365 /* Must avoid list_moved() in this case. */
4366 list_init(&rule
->facets
);
4369 table_id
= rule
->up
.table_id
;
4370 rule
->tag
= (victim
? victim
->tag
4372 : rule_calculate_tag(&rule
->up
.cr
.flow
, &rule
->up
.cr
.wc
,
4373 ofproto
->tables
[table_id
].basis
));
4375 complete_operation(rule
);
4380 rule_destruct(struct rule
*rule_
)
4382 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4383 struct facet
*facet
, *next_facet
;
4385 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4386 facet_revalidate(facet
);
4389 complete_operation(rule
);
4393 rule_get_stats(struct rule
*rule_
, uint64_t *packets
, uint64_t *bytes
)
4395 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4396 struct facet
*facet
;
4398 /* Start from historical data for 'rule' itself that are no longer tracked
4399 * in facets. This counts, for example, facets that have expired. */
4400 *packets
= rule
->packet_count
;
4401 *bytes
= rule
->byte_count
;
4403 /* Add any statistics that are tracked by facets. This includes
4404 * statistical data recently updated by ofproto_update_stats() as well as
4405 * stats for packets that were executed "by hand" via dpif_execute(). */
4406 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
4407 *packets
+= facet
->packet_count
;
4408 *bytes
+= facet
->byte_count
;
4413 rule_execute(struct rule
*rule_
, const struct flow
*flow
,
4414 struct ofpbuf
*packet
)
4416 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4417 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4419 struct dpif_flow_stats stats
;
4421 struct action_xlate_ctx ctx
;
4422 uint64_t odp_actions_stub
[1024 / 8];
4423 struct ofpbuf odp_actions
;
4425 dpif_flow_stats_extract(flow
, packet
, &stats
);
4426 rule_credit_stats(rule
, &stats
);
4428 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
4429 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
,
4430 rule
, stats
.tcp_flags
, packet
);
4431 ctx
.resubmit_stats
= &stats
;
4432 xlate_actions(&ctx
, rule
->up
.actions
, rule
->up
.n_actions
, &odp_actions
);
4434 execute_odp_actions(ofproto
, flow
, odp_actions
.data
,
4435 odp_actions
.size
, packet
);
4437 ofpbuf_uninit(&odp_actions
);
4443 rule_modify_actions(struct rule
*rule_
)
4445 struct rule_dpif
*rule
= rule_dpif_cast(rule_
);
4446 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
4449 error
= validate_actions(rule
->up
.actions
, rule
->up
.n_actions
,
4450 &rule
->up
.cr
.flow
, ofproto
->max_ports
);
4452 ofoperation_complete(rule
->up
.pending
, error
);
4456 complete_operation(rule
);
4459 /* Sends 'packet' out 'ofport'.
4460 * May modify 'packet'.
4461 * Returns 0 if successful, otherwise a positive errno value. */
4463 send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
4465 const struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport
->up
.ofproto
);
4466 struct ofpbuf key
, odp_actions
;
4467 struct odputil_keybuf keybuf
;
4472 flow_extract((struct ofpbuf
*) packet
, 0, 0, 0, &flow
);
4473 odp_port
= vsp_realdev_to_vlandev(ofproto
, ofport
->odp_port
,
4475 if (odp_port
!= ofport
->odp_port
) {
4476 eth_pop_vlan(packet
);
4477 flow
.vlan_tci
= htons(0);
4480 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
4481 odp_flow_key_from_flow(&key
, &flow
);
4483 ofpbuf_init(&odp_actions
, 32);
4484 compose_sflow_action(ofproto
, &odp_actions
, &flow
, odp_port
);
4486 nl_msg_put_u32(&odp_actions
, OVS_ACTION_ATTR_OUTPUT
, odp_port
);
4487 error
= dpif_execute(ofproto
->dpif
,
4489 odp_actions
.data
, odp_actions
.size
,
4491 ofpbuf_uninit(&odp_actions
);
4494 VLOG_WARN_RL(&rl
, "%s: failed to send packet on port %"PRIu32
" (%s)",
4495 ofproto
->up
.name
, odp_port
, strerror(error
));
4497 ofproto_update_local_port_stats(ofport
->up
.ofproto
, packet
->size
, 0);
4501 /* OpenFlow to datapath action translation. */
4503 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
4504 struct action_xlate_ctx
*ctx
);
4505 static void xlate_normal(struct action_xlate_ctx
*);
4508 put_userspace_action(const struct ofproto_dpif
*ofproto
,
4509 struct ofpbuf
*odp_actions
,
4510 const struct flow
*flow
,
4511 const struct user_action_cookie
*cookie
)
4515 pid
= dpif_port_get_pid(ofproto
->dpif
,
4516 ofp_port_to_odp_port(flow
->in_port
));
4518 return odp_put_userspace_action(pid
, cookie
, odp_actions
);
4521 /* Compose SAMPLE action for sFlow. */
4523 compose_sflow_action(const struct ofproto_dpif
*ofproto
,
4524 struct ofpbuf
*odp_actions
,
4525 const struct flow
*flow
,
4528 uint32_t port_ifindex
;
4529 uint32_t probability
;
4530 struct user_action_cookie cookie
;
4531 size_t sample_offset
, actions_offset
;
4532 int cookie_offset
, n_output
;
4534 if (!ofproto
->sflow
|| flow
->in_port
== OFPP_NONE
) {
4538 if (odp_port
== OVSP_NONE
) {
4542 port_ifindex
= dpif_sflow_odp_port_to_ifindex(ofproto
->sflow
, odp_port
);
4546 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
4548 /* Number of packets out of UINT_MAX to sample. */
4549 probability
= dpif_sflow_get_probability(ofproto
->sflow
);
4550 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
4552 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
4554 cookie
.type
= USER_ACTION_COOKIE_SFLOW
;
4555 cookie
.data
= port_ifindex
;
4556 cookie
.n_output
= n_output
;
4557 cookie
.vlan_tci
= 0;
4558 cookie_offset
= put_userspace_action(ofproto
, odp_actions
, flow
, &cookie
);
4560 nl_msg_end_nested(odp_actions
, actions_offset
);
4561 nl_msg_end_nested(odp_actions
, sample_offset
);
4562 return cookie_offset
;
4565 /* SAMPLE action must be first action in any given list of actions.
4566 * At this point we do not have all information required to build it. So try to
4567 * build sample action as complete as possible. */
4569 add_sflow_action(struct action_xlate_ctx
*ctx
)
4571 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->ofproto
,
4573 &ctx
->flow
, OVSP_NONE
);
4574 ctx
->sflow_odp_port
= 0;
4575 ctx
->sflow_n_outputs
= 0;
4578 /* Fix SAMPLE action according to data collected while composing ODP actions.
4579 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
4580 * USERSPACE action's user-cookie which is required for sflow. */
4582 fix_sflow_action(struct action_xlate_ctx
*ctx
)
4584 const struct flow
*base
= &ctx
->base_flow
;
4585 struct user_action_cookie
*cookie
;
4587 if (!ctx
->user_cookie_offset
) {
4591 cookie
= ofpbuf_at(ctx
->odp_actions
, ctx
->user_cookie_offset
,
4593 assert(cookie
!= NULL
);
4594 assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
4596 if (ctx
->sflow_n_outputs
) {
4597 cookie
->data
= dpif_sflow_odp_port_to_ifindex(ctx
->ofproto
->sflow
,
4598 ctx
->sflow_odp_port
);
4600 if (ctx
->sflow_n_outputs
>= 255) {
4601 cookie
->n_output
= 255;
4603 cookie
->n_output
= ctx
->sflow_n_outputs
;
4605 cookie
->vlan_tci
= base
->vlan_tci
;
4609 compose_output_action__(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
,
4612 const struct ofport_dpif
*ofport
= get_ofp_port(ctx
->ofproto
, ofp_port
);
4613 uint16_t odp_port
= ofp_port_to_odp_port(ofp_port
);
4614 ovs_be16 flow_vlan_tci
= ctx
->flow
.vlan_tci
;
4615 uint8_t flow_nw_tos
= ctx
->flow
.nw_tos
;
4619 struct priority_to_dscp
*pdscp
;
4621 if (ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FWD
4622 || (check_stp
&& !stp_forward_in_state(ofport
->stp_state
))) {
4626 pdscp
= get_priority(ofport
, ctx
->flow
.skb_priority
);
4628 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
4629 ctx
->flow
.nw_tos
|= pdscp
->dscp
;
4632 /* We may not have an ofport record for this port, but it doesn't hurt
4633 * to allow forwarding to it anyhow. Maybe such a port will appear
4634 * later and we're pre-populating the flow table. */
4637 out_port
= vsp_realdev_to_vlandev(ctx
->ofproto
, odp_port
,
4638 ctx
->flow
.vlan_tci
);
4639 if (out_port
!= odp_port
) {
4640 ctx
->flow
.vlan_tci
= htons(0);
4642 commit_odp_actions(&ctx
->flow
, &ctx
->base_flow
, ctx
->odp_actions
);
4643 nl_msg_put_u32(ctx
->odp_actions
, OVS_ACTION_ATTR_OUTPUT
, out_port
);
4645 ctx
->sflow_odp_port
= odp_port
;
4646 ctx
->sflow_n_outputs
++;
4647 ctx
->nf_output_iface
= ofp_port
;
4648 ctx
->flow
.vlan_tci
= flow_vlan_tci
;
4649 ctx
->flow
.nw_tos
= flow_nw_tos
;
4653 compose_output_action(struct action_xlate_ctx
*ctx
, uint16_t ofp_port
)
4655 compose_output_action__(ctx
, ofp_port
, true);
4659 xlate_table_action(struct action_xlate_ctx
*ctx
,
4660 uint16_t in_port
, uint8_t table_id
)
4662 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
4663 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
4664 struct rule_dpif
*rule
;
4665 uint16_t old_in_port
;
4666 uint8_t old_table_id
;
4668 old_table_id
= ctx
->table_id
;
4669 ctx
->table_id
= table_id
;
4671 /* Look up a flow with 'in_port' as the input port. */
4672 old_in_port
= ctx
->flow
.in_port
;
4673 ctx
->flow
.in_port
= in_port
;
4674 rule
= rule_dpif_lookup(ofproto
, &ctx
->flow
, table_id
);
4677 if (table_id
> 0 && table_id
< N_TABLES
) {
4678 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
4679 if (table
->other_table
) {
4680 ctx
->tags
|= (rule
&& rule
->tag
4682 : rule_calculate_tag(&ctx
->flow
,
4683 &table
->other_table
->wc
,
4688 /* Restore the original input port. Otherwise OFPP_NORMAL and
4689 * OFPP_IN_PORT will have surprising behavior. */
4690 ctx
->flow
.in_port
= old_in_port
;
4692 if (ctx
->resubmit_hook
) {
4693 ctx
->resubmit_hook(ctx
, rule
);
4697 struct rule_dpif
*old_rule
= ctx
->rule
;
4699 if (ctx
->resubmit_stats
) {
4700 rule_credit_stats(rule
, ctx
->resubmit_stats
);
4705 do_xlate_actions(rule
->up
.actions
, rule
->up
.n_actions
, ctx
);
4706 ctx
->rule
= old_rule
;
4710 ctx
->table_id
= old_table_id
;
4712 static struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4714 VLOG_ERR_RL(&recurse_rl
, "resubmit actions recursed over %d times",
4715 MAX_RESUBMIT_RECURSION
);
4716 ctx
->max_resubmit_trigger
= true;
4721 xlate_resubmit_table(struct action_xlate_ctx
*ctx
,
4722 const struct nx_action_resubmit
*nar
)
4727 in_port
= (nar
->in_port
== htons(OFPP_IN_PORT
)
4729 : ntohs(nar
->in_port
));
4730 table_id
= nar
->table
== 255 ? ctx
->table_id
: nar
->table
;
4732 xlate_table_action(ctx
, in_port
, table_id
);
4736 flood_packets(struct action_xlate_ctx
*ctx
, bool all
)
4738 struct ofport_dpif
*ofport
;
4740 HMAP_FOR_EACH (ofport
, up
.hmap_node
, &ctx
->ofproto
->up
.ports
) {
4741 uint16_t ofp_port
= ofport
->up
.ofp_port
;
4743 if (ofp_port
== ctx
->flow
.in_port
) {
4748 compose_output_action__(ctx
, ofp_port
, false);
4749 } else if (!(ofport
->up
.pp
.config
& OFPUTIL_PC_NO_FLOOD
)) {
4750 compose_output_action(ctx
, ofp_port
);
4754 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
4758 execute_controller_action(struct action_xlate_ctx
*ctx
, int len
,
4759 enum ofp_packet_in_reason reason
,
4760 uint16_t controller_id
)
4762 struct ofputil_packet_in pin
;
4763 struct ofpbuf
*packet
;
4765 ctx
->may_set_up_flow
= false;
4770 packet
= ofpbuf_clone(ctx
->packet
);
4772 if (packet
->l2
&& packet
->l3
) {
4773 struct eth_header
*eh
;
4775 eth_pop_vlan(packet
);
4778 /* If the Ethernet type is less than ETH_TYPE_MIN, it's likely an 802.2
4779 * LLC frame. Calculating the Ethernet type of these frames is more
4780 * trouble than seems appropriate for a simple assertion. */
4781 assert(ntohs(eh
->eth_type
) < ETH_TYPE_MIN
4782 || eh
->eth_type
== ctx
->flow
.dl_type
);
4784 memcpy(eh
->eth_src
, ctx
->flow
.dl_src
, sizeof eh
->eth_src
);
4785 memcpy(eh
->eth_dst
, ctx
->flow
.dl_dst
, sizeof eh
->eth_dst
);
4787 if (ctx
->flow
.vlan_tci
& htons(VLAN_CFI
)) {
4788 eth_push_vlan(packet
, ctx
->flow
.vlan_tci
);
4792 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
4793 packet_set_ipv4(packet
, ctx
->flow
.nw_src
, ctx
->flow
.nw_dst
,
4794 ctx
->flow
.nw_tos
, ctx
->flow
.nw_ttl
);
4798 if (ctx
->flow
.nw_proto
== IPPROTO_TCP
) {
4799 packet_set_tcp_port(packet
, ctx
->flow
.tp_src
,
4801 } else if (ctx
->flow
.nw_proto
== IPPROTO_UDP
) {
4802 packet_set_udp_port(packet
, ctx
->flow
.tp_src
,
4809 pin
.packet
= packet
->data
;
4810 pin
.packet_len
= packet
->size
;
4811 pin
.reason
= reason
;
4812 pin
.controller_id
= controller_id
;
4813 pin
.table_id
= ctx
->table_id
;
4814 pin
.cookie
= ctx
->rule
? ctx
->rule
->up
.flow_cookie
: 0;
4817 flow_get_metadata(&ctx
->flow
, &pin
.fmd
);
4819 connmgr_send_packet_in(ctx
->ofproto
->up
.connmgr
, &pin
);
4820 ofpbuf_delete(packet
);
4824 compose_dec_ttl(struct action_xlate_ctx
*ctx
)
4826 if (ctx
->flow
.dl_type
!= htons(ETH_TYPE_IP
) &&
4827 ctx
->flow
.dl_type
!= htons(ETH_TYPE_IPV6
)) {
4831 if (ctx
->flow
.nw_ttl
> 1) {
4835 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
4837 /* Stop processing for current table. */
4843 xlate_output_action__(struct action_xlate_ctx
*ctx
,
4844 uint16_t port
, uint16_t max_len
)
4846 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
4848 ctx
->nf_output_iface
= NF_OUT_DROP
;
4852 compose_output_action(ctx
, ctx
->flow
.in_port
);
4855 xlate_table_action(ctx
, ctx
->flow
.in_port
, ctx
->table_id
);
4861 flood_packets(ctx
, false);
4864 flood_packets(ctx
, true);
4866 case OFPP_CONTROLLER
:
4867 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
4873 if (port
!= ctx
->flow
.in_port
) {
4874 compose_output_action(ctx
, port
);
4879 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
4880 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
4881 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
4882 ctx
->nf_output_iface
= prev_nf_output_iface
;
4883 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
4884 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
4885 ctx
->nf_output_iface
= NF_OUT_MULTI
;
4890 xlate_output_reg_action(struct action_xlate_ctx
*ctx
,
4891 const struct nx_action_output_reg
*naor
)
4893 struct mf_subfield src
;
4896 nxm_decode(&src
, naor
->src
, naor
->ofs_nbits
);
4897 ofp_port
= mf_get_subfield(&src
, &ctx
->flow
);
4899 if (ofp_port
<= UINT16_MAX
) {
4900 xlate_output_action__(ctx
, ofp_port
, ntohs(naor
->max_len
));
4905 xlate_output_action(struct action_xlate_ctx
*ctx
,
4906 const struct ofp_action_output
*oao
)
4908 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
4912 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
4913 const struct ofp_action_enqueue
*oae
)
4916 uint32_t flow_priority
, priority
;
4919 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
4922 /* Fall back to ordinary output action. */
4923 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
4927 /* Figure out datapath output port. */
4928 ofp_port
= ntohs(oae
->port
);
4929 if (ofp_port
== OFPP_IN_PORT
) {
4930 ofp_port
= ctx
->flow
.in_port
;
4931 } else if (ofp_port
== ctx
->flow
.in_port
) {
4935 /* Add datapath actions. */
4936 flow_priority
= ctx
->flow
.skb_priority
;
4937 ctx
->flow
.skb_priority
= priority
;
4938 compose_output_action(ctx
, ofp_port
);
4939 ctx
->flow
.skb_priority
= flow_priority
;
4941 /* Update NetFlow output port. */
4942 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
4943 ctx
->nf_output_iface
= ofp_port
;
4944 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
4945 ctx
->nf_output_iface
= NF_OUT_MULTI
;
4950 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
4951 const struct nx_action_set_queue
*nasq
)
4956 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
4959 /* Couldn't translate queue to a priority, so ignore. A warning
4960 * has already been logged. */
4964 ctx
->flow
.skb_priority
= priority
;
4967 struct xlate_reg_state
{
4973 xlate_autopath(struct action_xlate_ctx
*ctx
,
4974 const struct nx_action_autopath
*naa
)
4976 uint16_t ofp_port
= ntohl(naa
->id
);
4977 struct ofport_dpif
*port
= get_ofp_port(ctx
->ofproto
, ofp_port
);
4979 if (!port
|| !port
->bundle
) {
4980 ofp_port
= OFPP_NONE
;
4981 } else if (port
->bundle
->bond
) {
4982 /* Autopath does not support VLAN hashing. */
4983 struct ofport_dpif
*slave
= bond_choose_output_slave(
4984 port
->bundle
->bond
, &ctx
->flow
, 0, &ctx
->tags
);
4986 ofp_port
= slave
->up
.ofp_port
;
4989 autopath_execute(naa
, &ctx
->flow
, ofp_port
);
4993 slave_enabled_cb(uint16_t ofp_port
, void *ofproto_
)
4995 struct ofproto_dpif
*ofproto
= ofproto_
;
4996 struct ofport_dpif
*port
;
5006 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
5009 port
= get_ofp_port(ofproto
, ofp_port
);
5010 return port
? port
->may_enable
: false;
5015 xlate_learn_action(struct action_xlate_ctx
*ctx
,
5016 const struct nx_action_learn
*learn
)
5018 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 1);
5019 struct ofputil_flow_mod fm
;
5022 learn_execute(learn
, &ctx
->flow
, &fm
);
5024 error
= ofproto_flow_mod(&ctx
->ofproto
->up
, &fm
);
5025 if (error
&& !VLOG_DROP_WARN(&rl
)) {
5026 VLOG_WARN("learning action failed to modify flow table (%s)",
5027 ofperr_get_name(error
));
5033 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
5034 * means "infinite". */
5036 reduce_timeout(uint16_t max
, uint16_t *timeout
)
5038 if (max
&& (!*timeout
|| *timeout
> max
)) {
5044 xlate_fin_timeout(struct action_xlate_ctx
*ctx
,
5045 const struct nx_action_fin_timeout
*naft
)
5047 if (ctx
->tcp_flags
& (TCP_FIN
| TCP_RST
) && ctx
->rule
) {
5048 struct rule_dpif
*rule
= ctx
->rule
;
5050 reduce_timeout(ntohs(naft
->fin_idle_timeout
), &rule
->up
.idle_timeout
);
5051 reduce_timeout(ntohs(naft
->fin_hard_timeout
), &rule
->up
.hard_timeout
);
5056 may_receive(const struct ofport_dpif
*port
, struct action_xlate_ctx
*ctx
)
5058 if (port
->up
.pp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
5059 ? OFPUTIL_PC_NO_RECV_STP
5060 : OFPUTIL_PC_NO_RECV
)) {
5064 /* Only drop packets here if both forwarding and learning are
5065 * disabled. If just learning is enabled, we need to have
5066 * OFPP_NORMAL and the learning action have a look at the packet
5067 * before we can drop it. */
5068 if (!stp_forward_in_state(port
->stp_state
)
5069 && !stp_learn_in_state(port
->stp_state
)) {
5077 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
5078 struct action_xlate_ctx
*ctx
)
5080 const struct ofport_dpif
*port
;
5081 const union ofp_action
*ia
;
5082 bool was_evictable
= true;
5085 port
= get_ofp_port(ctx
->ofproto
, ctx
->flow
.in_port
);
5086 if (port
&& !may_receive(port
, ctx
)) {
5087 /* Drop this flow. */
5092 /* Don't let the rule we're working on get evicted underneath us. */
5093 was_evictable
= ctx
->rule
->up
.evictable
;
5094 ctx
->rule
->up
.evictable
= false;
5096 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia
, left
, in
, n_in
) {
5097 const struct ofp_action_dl_addr
*oada
;
5098 const struct nx_action_resubmit
*nar
;
5099 const struct nx_action_set_tunnel
*nast
;
5100 const struct nx_action_set_queue
*nasq
;
5101 const struct nx_action_multipath
*nam
;
5102 const struct nx_action_autopath
*naa
;
5103 const struct nx_action_bundle
*nab
;
5104 const struct nx_action_output_reg
*naor
;
5105 const struct nx_action_controller
*nac
;
5106 enum ofputil_action_code code
;
5113 code
= ofputil_decode_action_unsafe(ia
);
5115 case OFPUTIL_OFPAT10_OUTPUT
:
5116 xlate_output_action(ctx
, &ia
->output
);
5119 case OFPUTIL_OFPAT10_SET_VLAN_VID
:
5120 ctx
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
5121 ctx
->flow
.vlan_tci
|= ia
->vlan_vid
.vlan_vid
| htons(VLAN_CFI
);
5124 case OFPUTIL_OFPAT10_SET_VLAN_PCP
:
5125 ctx
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
5126 ctx
->flow
.vlan_tci
|= htons(
5127 (ia
->vlan_pcp
.vlan_pcp
<< VLAN_PCP_SHIFT
) | VLAN_CFI
);
5130 case OFPUTIL_OFPAT10_STRIP_VLAN
:
5131 ctx
->flow
.vlan_tci
= htons(0);
5134 case OFPUTIL_OFPAT10_SET_DL_SRC
:
5135 oada
= ((struct ofp_action_dl_addr
*) ia
);
5136 memcpy(ctx
->flow
.dl_src
, oada
->dl_addr
, ETH_ADDR_LEN
);
5139 case OFPUTIL_OFPAT10_SET_DL_DST
:
5140 oada
= ((struct ofp_action_dl_addr
*) ia
);
5141 memcpy(ctx
->flow
.dl_dst
, oada
->dl_addr
, ETH_ADDR_LEN
);
5144 case OFPUTIL_OFPAT10_SET_NW_SRC
:
5145 ctx
->flow
.nw_src
= ia
->nw_addr
.nw_addr
;
5148 case OFPUTIL_OFPAT10_SET_NW_DST
:
5149 ctx
->flow
.nw_dst
= ia
->nw_addr
.nw_addr
;
5152 case OFPUTIL_OFPAT10_SET_NW_TOS
:
5153 /* OpenFlow 1.0 only supports IPv4. */
5154 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_IP
)) {
5155 ctx
->flow
.nw_tos
&= ~IP_DSCP_MASK
;
5156 ctx
->flow
.nw_tos
|= ia
->nw_tos
.nw_tos
& IP_DSCP_MASK
;
5160 case OFPUTIL_OFPAT10_SET_TP_SRC
:
5161 ctx
->flow
.tp_src
= ia
->tp_port
.tp_port
;
5164 case OFPUTIL_OFPAT10_SET_TP_DST
:
5165 ctx
->flow
.tp_dst
= ia
->tp_port
.tp_port
;
5168 case OFPUTIL_OFPAT10_ENQUEUE
:
5169 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
5172 case OFPUTIL_NXAST_RESUBMIT
:
5173 nar
= (const struct nx_action_resubmit
*) ia
;
5174 xlate_table_action(ctx
, ntohs(nar
->in_port
), ctx
->table_id
);
5177 case OFPUTIL_NXAST_RESUBMIT_TABLE
:
5178 xlate_resubmit_table(ctx
, (const struct nx_action_resubmit
*) ia
);
5181 case OFPUTIL_NXAST_SET_TUNNEL
:
5182 nast
= (const struct nx_action_set_tunnel
*) ia
;
5183 tun_id
= htonll(ntohl(nast
->tun_id
));
5184 ctx
->flow
.tun_id
= tun_id
;
5187 case OFPUTIL_NXAST_SET_QUEUE
:
5188 nasq
= (const struct nx_action_set_queue
*) ia
;
5189 xlate_set_queue_action(ctx
, nasq
);
5192 case OFPUTIL_NXAST_POP_QUEUE
:
5193 ctx
->flow
.skb_priority
= ctx
->orig_skb_priority
;
5196 case OFPUTIL_NXAST_REG_MOVE
:
5197 nxm_execute_reg_move((const struct nx_action_reg_move
*) ia
,
5201 case OFPUTIL_NXAST_REG_LOAD
:
5202 nxm_execute_reg_load((const struct nx_action_reg_load
*) ia
,
5206 case OFPUTIL_NXAST_NOTE
:
5207 /* Nothing to do. */
5210 case OFPUTIL_NXAST_SET_TUNNEL64
:
5211 tun_id
= ((const struct nx_action_set_tunnel64
*) ia
)->tun_id
;
5212 ctx
->flow
.tun_id
= tun_id
;
5215 case OFPUTIL_NXAST_MULTIPATH
:
5216 nam
= (const struct nx_action_multipath
*) ia
;
5217 multipath_execute(nam
, &ctx
->flow
);
5220 case OFPUTIL_NXAST_AUTOPATH
:
5221 naa
= (const struct nx_action_autopath
*) ia
;
5222 xlate_autopath(ctx
, naa
);
5225 case OFPUTIL_NXAST_BUNDLE
:
5226 ctx
->ofproto
->has_bundle_action
= true;
5227 nab
= (const struct nx_action_bundle
*) ia
;
5228 xlate_output_action__(ctx
, bundle_execute(nab
, &ctx
->flow
,
5233 case OFPUTIL_NXAST_BUNDLE_LOAD
:
5234 ctx
->ofproto
->has_bundle_action
= true;
5235 nab
= (const struct nx_action_bundle
*) ia
;
5236 bundle_execute_load(nab
, &ctx
->flow
, slave_enabled_cb
,
5240 case OFPUTIL_NXAST_OUTPUT_REG
:
5241 naor
= (const struct nx_action_output_reg
*) ia
;
5242 xlate_output_reg_action(ctx
, naor
);
5245 case OFPUTIL_NXAST_LEARN
:
5246 ctx
->has_learn
= true;
5247 if (ctx
->may_learn
) {
5248 xlate_learn_action(ctx
, (const struct nx_action_learn
*) ia
);
5252 case OFPUTIL_NXAST_DEC_TTL
:
5253 if (compose_dec_ttl(ctx
)) {
5258 case OFPUTIL_NXAST_EXIT
:
5262 case OFPUTIL_NXAST_FIN_TIMEOUT
:
5263 ctx
->has_fin_timeout
= true;
5264 xlate_fin_timeout(ctx
, (const struct nx_action_fin_timeout
*) ia
);
5267 case OFPUTIL_NXAST_CONTROLLER
:
5268 nac
= (const struct nx_action_controller
*) ia
;
5269 execute_controller_action(ctx
, ntohs(nac
->max_len
), nac
->reason
,
5270 ntohs(nac
->controller_id
));
5276 /* We've let OFPP_NORMAL and the learning action look at the packet,
5277 * so drop it now if forwarding is disabled. */
5278 if (port
&& !stp_forward_in_state(port
->stp_state
)) {
5279 ofpbuf_clear(ctx
->odp_actions
);
5280 add_sflow_action(ctx
);
5283 ctx
->rule
->up
.evictable
= was_evictable
;
5288 action_xlate_ctx_init(struct action_xlate_ctx
*ctx
,
5289 struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5290 ovs_be16 initial_tci
, struct rule_dpif
*rule
,
5291 uint8_t tcp_flags
, const struct ofpbuf
*packet
)
5293 ctx
->ofproto
= ofproto
;
5295 ctx
->base_flow
= ctx
->flow
;
5296 ctx
->base_flow
.tun_id
= 0;
5297 ctx
->base_flow
.vlan_tci
= initial_tci
;
5299 ctx
->packet
= packet
;
5300 ctx
->may_learn
= packet
!= NULL
;
5301 ctx
->tcp_flags
= tcp_flags
;
5302 ctx
->resubmit_hook
= NULL
;
5303 ctx
->resubmit_stats
= NULL
;
5306 /* Translates the 'n_in' "union ofp_action"s in 'in' into datapath actions in
5307 * 'odp_actions', using 'ctx'. */
5309 xlate_actions(struct action_xlate_ctx
*ctx
,
5310 const union ofp_action
*in
, size_t n_in
,
5311 struct ofpbuf
*odp_actions
)
5313 /* Normally false. Set to true if we ever hit MAX_RESUBMIT_RECURSION, so
5314 * that in the future we always keep a copy of the original flow for
5315 * tracing purposes. */
5316 static bool hit_resubmit_limit
;
5318 COVERAGE_INC(ofproto_dpif_xlate
);
5320 ofpbuf_clear(odp_actions
);
5321 ofpbuf_reserve(odp_actions
, NL_A_U32_SIZE
);
5323 ctx
->odp_actions
= odp_actions
;
5325 ctx
->may_set_up_flow
= true;
5326 ctx
->has_learn
= false;
5327 ctx
->has_normal
= false;
5328 ctx
->has_fin_timeout
= false;
5329 ctx
->nf_output_iface
= NF_OUT_DROP
;
5332 ctx
->max_resubmit_trigger
= false;
5333 ctx
->orig_skb_priority
= ctx
->flow
.skb_priority
;
5337 if (ctx
->ofproto
->has_mirrors
|| hit_resubmit_limit
) {
5338 /* Do this conditionally because the copy is expensive enough that it
5339 * shows up in profiles.
5341 * We keep orig_flow in 'ctx' only because I couldn't make GCC 4.4
5342 * believe that I wasn't using it without initializing it if I kept it
5343 * in a local variable. */
5344 ctx
->orig_flow
= ctx
->flow
;
5347 if (ctx
->flow
.nw_frag
& FLOW_NW_FRAG_ANY
) {
5348 switch (ctx
->ofproto
->up
.frag_handling
) {
5349 case OFPC_FRAG_NORMAL
:
5350 /* We must pretend that transport ports are unavailable. */
5351 ctx
->flow
.tp_src
= ctx
->base_flow
.tp_src
= htons(0);
5352 ctx
->flow
.tp_dst
= ctx
->base_flow
.tp_dst
= htons(0);
5355 case OFPC_FRAG_DROP
:
5358 case OFPC_FRAG_REASM
:
5361 case OFPC_FRAG_NX_MATCH
:
5362 /* Nothing to do. */
5365 case OFPC_INVALID_TTL_TO_CONTROLLER
:
5370 if (process_special(ctx
->ofproto
, &ctx
->flow
, ctx
->packet
)) {
5371 ctx
->may_set_up_flow
= false;
5373 static struct vlog_rate_limit trace_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
5374 ovs_be16 initial_tci
= ctx
->base_flow
.vlan_tci
;
5376 add_sflow_action(ctx
);
5377 do_xlate_actions(in
, n_in
, ctx
);
5379 if (ctx
->max_resubmit_trigger
&& !ctx
->resubmit_hook
) {
5380 if (!hit_resubmit_limit
) {
5381 /* We didn't record the original flow. Make sure we do from
5383 hit_resubmit_limit
= true;
5384 } else if (!VLOG_DROP_ERR(&trace_rl
)) {
5385 struct ds ds
= DS_EMPTY_INITIALIZER
;
5387 ofproto_trace(ctx
->ofproto
, &ctx
->orig_flow
, ctx
->packet
,
5389 VLOG_ERR("Trace triggered by excessive resubmit "
5390 "recursion:\n%s", ds_cstr(&ds
));
5395 if (!connmgr_may_set_up_flow(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
5396 ctx
->odp_actions
->data
,
5397 ctx
->odp_actions
->size
)) {
5398 ctx
->may_set_up_flow
= false;
5400 && connmgr_msg_in_hook(ctx
->ofproto
->up
.connmgr
, &ctx
->flow
,
5402 compose_output_action(ctx
, OFPP_LOCAL
);
5405 if (ctx
->ofproto
->has_mirrors
) {
5406 add_mirror_actions(ctx
, &ctx
->orig_flow
);
5408 fix_sflow_action(ctx
);
5412 /* Translates the 'n_in' "union ofp_action"s in 'in' into datapath actions,
5413 * using 'ctx', and discards the datapath actions. */
5415 xlate_actions_for_side_effects(struct action_xlate_ctx
*ctx
,
5416 const union ofp_action
*in
, size_t n_in
)
5418 uint64_t odp_actions_stub
[1024 / 8];
5419 struct ofpbuf odp_actions
;
5421 ofpbuf_use_stub(&odp_actions
, odp_actions_stub
, sizeof odp_actions_stub
);
5422 xlate_actions(ctx
, in
, n_in
, &odp_actions
);
5423 ofpbuf_uninit(&odp_actions
);
5426 /* OFPP_NORMAL implementation. */
5428 static struct ofport_dpif
*ofbundle_get_a_port(const struct ofbundle
*);
5430 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
5431 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
5432 * the bundle on which the packet was received, returns the VLAN to which the
5435 * Both 'vid' and the return value are in the range 0...4095. */
5437 input_vid_to_vlan(const struct ofbundle
*in_bundle
, uint16_t vid
)
5439 switch (in_bundle
->vlan_mode
) {
5440 case PORT_VLAN_ACCESS
:
5441 return in_bundle
->vlan
;
5444 case PORT_VLAN_TRUNK
:
5447 case PORT_VLAN_NATIVE_UNTAGGED
:
5448 case PORT_VLAN_NATIVE_TAGGED
:
5449 return vid
? vid
: in_bundle
->vlan
;
5456 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
5457 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
5460 * 'vid' should be the VID obtained from the 802.1Q header that was received as
5461 * part of a packet (specify 0 if there was no 802.1Q header), in the range
5464 input_vid_is_valid(uint16_t vid
, struct ofbundle
*in_bundle
, bool warn
)
5466 /* Allow any VID on the OFPP_NONE port. */
5467 if (in_bundle
== &ofpp_none_bundle
) {
5471 switch (in_bundle
->vlan_mode
) {
5472 case PORT_VLAN_ACCESS
:
5475 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5476 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" tagged "
5477 "packet received on port %s configured as VLAN "
5478 "%"PRIu16
" access port",
5479 in_bundle
->ofproto
->up
.name
, vid
,
5480 in_bundle
->name
, in_bundle
->vlan
);
5486 case PORT_VLAN_NATIVE_UNTAGGED
:
5487 case PORT_VLAN_NATIVE_TAGGED
:
5489 /* Port must always carry its native VLAN. */
5493 case PORT_VLAN_TRUNK
:
5494 if (!ofbundle_includes_vlan(in_bundle
, vid
)) {
5496 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5497 VLOG_WARN_RL(&rl
, "bridge %s: dropping VLAN %"PRIu16
" packet "
5498 "received on port %s not configured for trunking "
5500 in_bundle
->ofproto
->up
.name
, vid
,
5501 in_bundle
->name
, vid
);
5513 /* Given 'vlan', the VLAN that a packet belongs to, and
5514 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
5515 * that should be included in the 802.1Q header. (If the return value is 0,
5516 * then the 802.1Q header should only be included in the packet if there is a
5519 * Both 'vlan' and the return value are in the range 0...4095. */
5521 output_vlan_to_vid(const struct ofbundle
*out_bundle
, uint16_t vlan
)
5523 switch (out_bundle
->vlan_mode
) {
5524 case PORT_VLAN_ACCESS
:
5527 case PORT_VLAN_TRUNK
:
5528 case PORT_VLAN_NATIVE_TAGGED
:
5531 case PORT_VLAN_NATIVE_UNTAGGED
:
5532 return vlan
== out_bundle
->vlan
? 0 : vlan
;
5540 output_normal(struct action_xlate_ctx
*ctx
, const struct ofbundle
*out_bundle
,
5543 struct ofport_dpif
*port
;
5545 ovs_be16 tci
, old_tci
;
5547 vid
= output_vlan_to_vid(out_bundle
, vlan
);
5548 if (!out_bundle
->bond
) {
5549 port
= ofbundle_get_a_port(out_bundle
);
5551 port
= bond_choose_output_slave(out_bundle
->bond
, &ctx
->flow
,
5554 /* No slaves enabled, so drop packet. */
5559 old_tci
= ctx
->flow
.vlan_tci
;
5561 if (tci
|| out_bundle
->use_priority_tags
) {
5562 tci
|= ctx
->flow
.vlan_tci
& htons(VLAN_PCP_MASK
);
5564 tci
|= htons(VLAN_CFI
);
5567 ctx
->flow
.vlan_tci
= tci
;
5569 compose_output_action(ctx
, port
->up
.ofp_port
);
5570 ctx
->flow
.vlan_tci
= old_tci
;
5574 mirror_mask_ffs(mirror_mask_t mask
)
5576 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask
));
5581 ofbundle_trunks_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
5583 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
5584 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
5588 ofbundle_includes_vlan(const struct ofbundle
*bundle
, uint16_t vlan
)
5590 return vlan
== bundle
->vlan
|| ofbundle_trunks_vlan(bundle
, vlan
);
5593 /* Returns an arbitrary interface within 'bundle'. */
5594 static struct ofport_dpif
*
5595 ofbundle_get_a_port(const struct ofbundle
*bundle
)
5597 return CONTAINER_OF(list_front(&bundle
->ports
),
5598 struct ofport_dpif
, bundle_node
);
5602 vlan_is_mirrored(const struct ofmirror
*m
, int vlan
)
5604 return !m
->vlans
|| bitmap_is_set(m
->vlans
, vlan
);
5607 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
5608 * to a VLAN. In general most packets may be mirrored but we want to drop
5609 * protocols that may confuse switches. */
5611 eth_dst_may_rspan(const uint8_t dst
[ETH_ADDR_LEN
])
5613 /* If you change this function's behavior, please update corresponding
5614 * documentation in vswitch.xml at the same time. */
5615 if (dst
[0] != 0x01) {
5616 /* All the currently banned MACs happen to start with 01 currently, so
5617 * this is a quick way to eliminate most of the good ones. */
5619 if (eth_addr_is_reserved(dst
)) {
5620 /* Drop STP, IEEE pause frames, and other reserved protocols
5621 * (01-80-c2-00-00-0x). */
5625 if (dst
[0] == 0x01 && dst
[1] == 0x00 && dst
[2] == 0x0c) {
5627 if ((dst
[3] & 0xfe) == 0xcc &&
5628 (dst
[4] & 0xfe) == 0xcc &&
5629 (dst
[5] & 0xfe) == 0xcc) {
5630 /* Drop the following protocols plus others following the same
5633 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
5634 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
5635 STP Uplink Fast (01-00-0c-cd-cd-cd) */
5639 if (!(dst
[3] | dst
[4] | dst
[5])) {
5640 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
5649 add_mirror_actions(struct action_xlate_ctx
*ctx
, const struct flow
*orig_flow
)
5651 struct ofproto_dpif
*ofproto
= ctx
->ofproto
;
5652 mirror_mask_t mirrors
;
5653 struct ofbundle
*in_bundle
;
5656 const struct nlattr
*a
;
5659 in_bundle
= lookup_input_bundle(ctx
->ofproto
, orig_flow
->in_port
,
5660 ctx
->packet
!= NULL
, NULL
);
5664 mirrors
= in_bundle
->src_mirrors
;
5666 /* Drop frames on bundles reserved for mirroring. */
5667 if (in_bundle
->mirror_out
) {
5668 if (ctx
->packet
!= NULL
) {
5669 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5670 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
5671 "%s, which is reserved exclusively for mirroring",
5672 ctx
->ofproto
->up
.name
, in_bundle
->name
);
5678 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
5679 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
5682 vlan
= input_vid_to_vlan(in_bundle
, vid
);
5684 /* Look at the output ports to check for destination selections. */
5686 NL_ATTR_FOR_EACH (a
, left
, ctx
->odp_actions
->data
,
5687 ctx
->odp_actions
->size
) {
5688 enum ovs_action_attr type
= nl_attr_type(a
);
5689 struct ofport_dpif
*ofport
;
5691 if (type
!= OVS_ACTION_ATTR_OUTPUT
) {
5695 ofport
= get_odp_port(ofproto
, nl_attr_get_u32(a
));
5696 if (ofport
&& ofport
->bundle
) {
5697 mirrors
|= ofport
->bundle
->dst_mirrors
;
5705 /* Restore the original packet before adding the mirror actions. */
5706 ctx
->flow
= *orig_flow
;
5711 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
5713 if (!vlan_is_mirrored(m
, vlan
)) {
5714 mirrors
&= mirrors
- 1;
5718 mirrors
&= ~m
->dup_mirrors
;
5719 ctx
->mirrors
|= m
->dup_mirrors
;
5721 output_normal(ctx
, m
->out
, vlan
);
5722 } else if (eth_dst_may_rspan(orig_flow
->dl_dst
)
5723 && vlan
!= m
->out_vlan
) {
5724 struct ofbundle
*bundle
;
5726 HMAP_FOR_EACH (bundle
, hmap_node
, &ofproto
->bundles
) {
5727 if (ofbundle_includes_vlan(bundle
, m
->out_vlan
)
5728 && !bundle
->mirror_out
) {
5729 output_normal(ctx
, bundle
, m
->out_vlan
);
5737 update_mirror_stats(struct ofproto_dpif
*ofproto
, mirror_mask_t mirrors
,
5738 uint64_t packets
, uint64_t bytes
)
5744 for (; mirrors
; mirrors
&= mirrors
- 1) {
5747 m
= ofproto
->mirrors
[mirror_mask_ffs(mirrors
) - 1];
5750 /* In normal circumstances 'm' will not be NULL. However,
5751 * if mirrors are reconfigured, we can temporarily get out
5752 * of sync in facet_revalidate(). We could "correct" the
5753 * mirror list before reaching here, but doing that would
5754 * not properly account the traffic stats we've currently
5755 * accumulated for previous mirror configuration. */
5759 m
->packet_count
+= packets
;
5760 m
->byte_count
+= bytes
;
5764 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
5765 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
5766 * indicate this; newer upstream kernels use gratuitous ARP requests. */
5768 is_gratuitous_arp(const struct flow
*flow
)
5770 return (flow
->dl_type
== htons(ETH_TYPE_ARP
)
5771 && eth_addr_is_broadcast(flow
->dl_dst
)
5772 && (flow
->nw_proto
== ARP_OP_REPLY
5773 || (flow
->nw_proto
== ARP_OP_REQUEST
5774 && flow
->nw_src
== flow
->nw_dst
)));
5778 update_learning_table(struct ofproto_dpif
*ofproto
,
5779 const struct flow
*flow
, int vlan
,
5780 struct ofbundle
*in_bundle
)
5782 struct mac_entry
*mac
;
5784 /* Don't learn the OFPP_NONE port. */
5785 if (in_bundle
== &ofpp_none_bundle
) {
5789 if (!mac_learning_may_learn(ofproto
->ml
, flow
->dl_src
, vlan
)) {
5793 mac
= mac_learning_insert(ofproto
->ml
, flow
->dl_src
, vlan
);
5794 if (is_gratuitous_arp(flow
)) {
5795 /* We don't want to learn from gratuitous ARP packets that are
5796 * reflected back over bond slaves so we lock the learning table. */
5797 if (!in_bundle
->bond
) {
5798 mac_entry_set_grat_arp_lock(mac
);
5799 } else if (mac_entry_is_grat_arp_locked(mac
)) {
5804 if (mac_entry_is_new(mac
) || mac
->port
.p
!= in_bundle
) {
5805 /* The log messages here could actually be useful in debugging,
5806 * so keep the rate limit relatively high. */
5807 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
5808 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
5809 "on port %s in VLAN %d",
5810 ofproto
->up
.name
, ETH_ADDR_ARGS(flow
->dl_src
),
5811 in_bundle
->name
, vlan
);
5813 mac
->port
.p
= in_bundle
;
5814 tag_set_add(&ofproto
->revalidate_set
,
5815 mac_learning_changed(ofproto
->ml
, mac
));
5819 static struct ofbundle
*
5820 lookup_input_bundle(struct ofproto_dpif
*ofproto
, uint16_t in_port
, bool warn
,
5821 struct ofport_dpif
**in_ofportp
)
5823 struct ofport_dpif
*ofport
;
5825 /* Find the port and bundle for the received packet. */
5826 ofport
= get_ofp_port(ofproto
, in_port
);
5828 *in_ofportp
= ofport
;
5830 if (ofport
&& ofport
->bundle
) {
5831 return ofport
->bundle
;
5834 /* Special-case OFPP_NONE, which a controller may use as the ingress
5835 * port for traffic that it is sourcing. */
5836 if (in_port
== OFPP_NONE
) {
5837 return &ofpp_none_bundle
;
5840 /* Odd. A few possible reasons here:
5842 * - We deleted a port but there are still a few packets queued up
5845 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
5846 * we don't know about.
5848 * - The ofproto client didn't configure the port as part of a bundle.
5851 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5853 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
5854 "port %"PRIu16
, ofproto
->up
.name
, in_port
);
5859 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
5860 * dropped. Returns true if they may be forwarded, false if they should be
5863 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
5864 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
5866 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
5867 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
5868 * checked by input_vid_is_valid().
5870 * May also add tags to '*tags', although the current implementation only does
5871 * so in one special case.
5874 is_admissible(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
5875 struct ofport_dpif
*in_port
, uint16_t vlan
, tag_type
*tags
)
5877 struct ofbundle
*in_bundle
= in_port
->bundle
;
5879 /* Drop frames for reserved multicast addresses
5880 * only if forward_bpdu option is absent. */
5881 if (eth_addr_is_reserved(flow
->dl_dst
) && !ofproto
->up
.forward_bpdu
) {
5885 if (in_bundle
->bond
) {
5886 struct mac_entry
*mac
;
5888 switch (bond_check_admissibility(in_bundle
->bond
, in_port
,
5889 flow
->dl_dst
, tags
)) {
5896 case BV_DROP_IF_MOVED
:
5897 mac
= mac_learning_lookup(ofproto
->ml
, flow
->dl_src
, vlan
, NULL
);
5898 if (mac
&& mac
->port
.p
!= in_bundle
&&
5899 (!is_gratuitous_arp(flow
)
5900 || mac_entry_is_grat_arp_locked(mac
))) {
5911 xlate_normal(struct action_xlate_ctx
*ctx
)
5913 struct ofport_dpif
*in_port
;
5914 struct ofbundle
*in_bundle
;
5915 struct mac_entry
*mac
;
5919 ctx
->has_normal
= true;
5921 in_bundle
= lookup_input_bundle(ctx
->ofproto
, ctx
->flow
.in_port
,
5922 ctx
->packet
!= NULL
, &in_port
);
5927 /* Drop malformed frames. */
5928 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_VLAN
) &&
5929 !(ctx
->flow
.vlan_tci
& htons(VLAN_CFI
))) {
5930 if (ctx
->packet
!= NULL
) {
5931 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5932 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
5933 "VLAN tag received on port %s",
5934 ctx
->ofproto
->up
.name
, in_bundle
->name
);
5939 /* Drop frames on bundles reserved for mirroring. */
5940 if (in_bundle
->mirror_out
) {
5941 if (ctx
->packet
!= NULL
) {
5942 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5943 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
5944 "%s, which is reserved exclusively for mirroring",
5945 ctx
->ofproto
->up
.name
, in_bundle
->name
);
5951 vid
= vlan_tci_to_vid(ctx
->flow
.vlan_tci
);
5952 if (!input_vid_is_valid(vid
, in_bundle
, ctx
->packet
!= NULL
)) {
5955 vlan
= input_vid_to_vlan(in_bundle
, vid
);
5957 /* Check other admissibility requirements. */
5959 !is_admissible(ctx
->ofproto
, &ctx
->flow
, in_port
, vlan
, &ctx
->tags
)) {
5963 /* Learn source MAC. */
5964 if (ctx
->may_learn
) {
5965 update_learning_table(ctx
->ofproto
, &ctx
->flow
, vlan
, in_bundle
);
5968 /* Determine output bundle. */
5969 mac
= mac_learning_lookup(ctx
->ofproto
->ml
, ctx
->flow
.dl_dst
, vlan
,
5972 if (mac
->port
.p
!= in_bundle
) {
5973 output_normal(ctx
, mac
->port
.p
, vlan
);
5976 struct ofbundle
*bundle
;
5978 HMAP_FOR_EACH (bundle
, hmap_node
, &ctx
->ofproto
->bundles
) {
5979 if (bundle
!= in_bundle
5980 && ofbundle_includes_vlan(bundle
, vlan
)
5981 && bundle
->floodable
5982 && !bundle
->mirror_out
) {
5983 output_normal(ctx
, bundle
, vlan
);
5986 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
5990 /* Optimized flow revalidation.
5992 * It's a difficult problem, in general, to tell which facets need to have
5993 * their actions recalculated whenever the OpenFlow flow table changes. We
5994 * don't try to solve that general problem: for most kinds of OpenFlow flow
5995 * table changes, we recalculate the actions for every facet. This is
5996 * relatively expensive, but it's good enough if the OpenFlow flow table
5997 * doesn't change very often.
5999 * However, we can expect one particular kind of OpenFlow flow table change to
6000 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
6001 * of CPU on revalidating every facet whenever MAC learning modifies the flow
6002 * table, we add a special case that applies to flow tables in which every rule
6003 * has the same form (that is, the same wildcards), except that the table is
6004 * also allowed to have a single "catch-all" flow that matches all packets. We
6005 * optimize this case by tagging all of the facets that resubmit into the table
6006 * and invalidating the same tag whenever a flow changes in that table. The
6007 * end result is that we revalidate just the facets that need it (and sometimes
6008 * a few more, but not all of the facets or even all of the facets that
6009 * resubmit to the table modified by MAC learning). */
6011 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
6012 * into an OpenFlow table with the given 'basis'. */
6014 rule_calculate_tag(const struct flow
*flow
, const struct flow_wildcards
*wc
,
6017 if (flow_wildcards_is_catchall(wc
)) {
6020 struct flow tag_flow
= *flow
;
6021 flow_zero_wildcards(&tag_flow
, wc
);
6022 return tag_create_deterministic(flow_hash(&tag_flow
, secret
));
6026 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
6027 * taggability of that table.
6029 * This function must be called after *each* change to a flow table. If you
6030 * skip calling it on some changes then the pointer comparisons at the end can
6031 * be invalid if you get unlucky. For example, if a flow removal causes a
6032 * cls_table to be destroyed and then a flow insertion causes a cls_table with
6033 * different wildcards to be created with the same address, then this function
6034 * will incorrectly skip revalidation. */
6036 table_update_taggable(struct ofproto_dpif
*ofproto
, uint8_t table_id
)
6038 struct table_dpif
*table
= &ofproto
->tables
[table_id
];
6039 const struct oftable
*oftable
= &ofproto
->up
.tables
[table_id
];
6040 struct cls_table
*catchall
, *other
;
6041 struct cls_table
*t
;
6043 catchall
= other
= NULL
;
6045 switch (hmap_count(&oftable
->cls
.tables
)) {
6047 /* We could tag this OpenFlow table but it would make the logic a
6048 * little harder and it's a corner case that doesn't seem worth it
6054 HMAP_FOR_EACH (t
, hmap_node
, &oftable
->cls
.tables
) {
6055 if (cls_table_is_catchall(t
)) {
6057 } else if (!other
) {
6060 /* Indicate that we can't tag this by setting both tables to
6061 * NULL. (We know that 'catchall' is already NULL.) */
6068 /* Can't tag this table. */
6072 if (table
->catchall_table
!= catchall
|| table
->other_table
!= other
) {
6073 table
->catchall_table
= catchall
;
6074 table
->other_table
= other
;
6075 ofproto
->need_revalidate
= true;
6079 /* Given 'rule' that has changed in some way (either it is a rule being
6080 * inserted, a rule being deleted, or a rule whose actions are being
6081 * modified), marks facets for revalidation to ensure that packets will be
6082 * forwarded correctly according to the new state of the flow table.
6084 * This function must be called after *each* change to a flow table. See
6085 * the comment on table_update_taggable() for more information. */
6087 rule_invalidate(const struct rule_dpif
*rule
)
6089 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(rule
->up
.ofproto
);
6091 table_update_taggable(ofproto
, rule
->up
.table_id
);
6093 if (!ofproto
->need_revalidate
) {
6094 struct table_dpif
*table
= &ofproto
->tables
[rule
->up
.table_id
];
6096 if (table
->other_table
&& rule
->tag
) {
6097 tag_set_add(&ofproto
->revalidate_set
, rule
->tag
);
6099 ofproto
->need_revalidate
= true;
6105 set_frag_handling(struct ofproto
*ofproto_
,
6106 enum ofp_config_flags frag_handling
)
6108 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6110 if (frag_handling
!= OFPC_FRAG_REASM
) {
6111 ofproto
->need_revalidate
= true;
6119 packet_out(struct ofproto
*ofproto_
, struct ofpbuf
*packet
,
6120 const struct flow
*flow
,
6121 const union ofp_action
*ofp_actions
, size_t n_ofp_actions
)
6123 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6126 if (flow
->in_port
>= ofproto
->max_ports
&& flow
->in_port
< OFPP_MAX
) {
6127 return OFPERR_NXBRC_BAD_IN_PORT
;
6130 error
= validate_actions(ofp_actions
, n_ofp_actions
, flow
,
6131 ofproto
->max_ports
);
6133 struct odputil_keybuf keybuf
;
6134 struct dpif_flow_stats stats
;
6138 struct action_xlate_ctx ctx
;
6139 uint64_t odp_actions_stub
[1024 / 8];
6140 struct ofpbuf odp_actions
;
6142 ofpbuf_use_stack(&key
, &keybuf
, sizeof keybuf
);
6143 odp_flow_key_from_flow(&key
, flow
);
6145 dpif_flow_stats_extract(flow
, packet
, &stats
);
6147 action_xlate_ctx_init(&ctx
, ofproto
, flow
, flow
->vlan_tci
, NULL
,
6148 packet_get_tcp_flags(packet
, flow
), packet
);
6149 ctx
.resubmit_stats
= &stats
;
6151 ofpbuf_use_stub(&odp_actions
,
6152 odp_actions_stub
, sizeof odp_actions_stub
);
6153 xlate_actions(&ctx
, ofp_actions
, n_ofp_actions
, &odp_actions
);
6154 dpif_execute(ofproto
->dpif
, key
.data
, key
.size
,
6155 odp_actions
.data
, odp_actions
.size
, packet
);
6156 ofpbuf_uninit(&odp_actions
);
6164 set_netflow(struct ofproto
*ofproto_
,
6165 const struct netflow_options
*netflow_options
)
6167 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6169 if (netflow_options
) {
6170 if (!ofproto
->netflow
) {
6171 ofproto
->netflow
= netflow_create();
6173 return netflow_set_options(ofproto
->netflow
, netflow_options
);
6175 netflow_destroy(ofproto
->netflow
);
6176 ofproto
->netflow
= NULL
;
6182 get_netflow_ids(const struct ofproto
*ofproto_
,
6183 uint8_t *engine_type
, uint8_t *engine_id
)
6185 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofproto_
);
6187 dpif_get_netflow_ids(ofproto
->dpif
, engine_type
, engine_id
);
6191 send_active_timeout(struct ofproto_dpif
*ofproto
, struct facet
*facet
)
6193 if (!facet_is_controller_flow(facet
) &&
6194 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
6195 struct subfacet
*subfacet
;
6196 struct ofexpired expired
;
6198 LIST_FOR_EACH (subfacet
, list_node
, &facet
->subfacets
) {
6199 if (subfacet
->installed
) {
6200 struct dpif_flow_stats stats
;
6202 subfacet_install(subfacet
, subfacet
->actions
,
6203 subfacet
->actions_len
, &stats
);
6204 subfacet_update_stats(subfacet
, &stats
);
6208 expired
.flow
= facet
->flow
;
6209 expired
.packet_count
= facet
->packet_count
;
6210 expired
.byte_count
= facet
->byte_count
;
6211 expired
.used
= facet
->used
;
6212 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
6217 send_netflow_active_timeouts(struct ofproto_dpif
*ofproto
)
6219 struct facet
*facet
;
6221 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
6222 send_active_timeout(ofproto
, facet
);
6226 static struct ofproto_dpif
*
6227 ofproto_dpif_lookup(const char *name
)
6229 struct ofproto_dpif
*ofproto
;
6231 HMAP_FOR_EACH_WITH_HASH (ofproto
, all_ofproto_dpifs_node
,
6232 hash_string(name
, 0), &all_ofproto_dpifs
) {
6233 if (!strcmp(ofproto
->up
.name
, name
)) {
6241 ofproto_unixctl_fdb_flush(struct unixctl_conn
*conn
, int argc
,
6242 const char *argv
[], void *aux OVS_UNUSED
)
6244 struct ofproto_dpif
*ofproto
;
6247 ofproto
= ofproto_dpif_lookup(argv
[1]);
6249 unixctl_command_reply_error(conn
, "no such bridge");
6252 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
6254 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
6255 mac_learning_flush(ofproto
->ml
, &ofproto
->revalidate_set
);
6259 unixctl_command_reply(conn
, "table successfully flushed");
6263 ofproto_unixctl_fdb_show(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
6264 const char *argv
[], void *aux OVS_UNUSED
)
6266 struct ds ds
= DS_EMPTY_INITIALIZER
;
6267 const struct ofproto_dpif
*ofproto
;
6268 const struct mac_entry
*e
;
6270 ofproto
= ofproto_dpif_lookup(argv
[1]);
6272 unixctl_command_reply_error(conn
, "no such bridge");
6276 ds_put_cstr(&ds
, " port VLAN MAC Age\n");
6277 LIST_FOR_EACH (e
, lru_node
, &ofproto
->ml
->lrus
) {
6278 struct ofbundle
*bundle
= e
->port
.p
;
6279 ds_put_format(&ds
, "%5d %4d "ETH_ADDR_FMT
" %3d\n",
6280 ofbundle_get_a_port(bundle
)->odp_port
,
6281 e
->vlan
, ETH_ADDR_ARGS(e
->mac
),
6282 mac_entry_age(ofproto
->ml
, e
));
6284 unixctl_command_reply(conn
, ds_cstr(&ds
));
6289 struct action_xlate_ctx ctx
;
6295 trace_format_rule(struct ds
*result
, uint8_t table_id
, int level
,
6296 const struct rule_dpif
*rule
)
6298 ds_put_char_multiple(result
, '\t', level
);
6300 ds_put_cstr(result
, "No match\n");
6304 ds_put_format(result
, "Rule: table=%"PRIu8
" cookie=%#"PRIx64
" ",
6305 table_id
, ntohll(rule
->up
.flow_cookie
));
6306 cls_rule_format(&rule
->up
.cr
, result
);
6307 ds_put_char(result
, '\n');
6309 ds_put_char_multiple(result
, '\t', level
);
6310 ds_put_cstr(result
, "OpenFlow ");
6311 ofp_print_actions(result
, rule
->up
.actions
, rule
->up
.n_actions
);
6312 ds_put_char(result
, '\n');
6316 trace_format_flow(struct ds
*result
, int level
, const char *title
,
6317 struct trace_ctx
*trace
)
6319 ds_put_char_multiple(result
, '\t', level
);
6320 ds_put_format(result
, "%s: ", title
);
6321 if (flow_equal(&trace
->ctx
.flow
, &trace
->flow
)) {
6322 ds_put_cstr(result
, "unchanged");
6324 flow_format(result
, &trace
->ctx
.flow
);
6325 trace
->flow
= trace
->ctx
.flow
;
6327 ds_put_char(result
, '\n');
6331 trace_format_regs(struct ds
*result
, int level
, const char *title
,
6332 struct trace_ctx
*trace
)
6336 ds_put_char_multiple(result
, '\t', level
);
6337 ds_put_format(result
, "%s:", title
);
6338 for (i
= 0; i
< FLOW_N_REGS
; i
++) {
6339 ds_put_format(result
, " reg%zu=0x%"PRIx32
, i
, trace
->flow
.regs
[i
]);
6341 ds_put_char(result
, '\n');
6345 trace_format_odp(struct ds
*result
, int level
, const char *title
,
6346 struct trace_ctx
*trace
)
6348 struct ofpbuf
*odp_actions
= trace
->ctx
.odp_actions
;
6350 ds_put_char_multiple(result
, '\t', level
);
6351 ds_put_format(result
, "%s: ", title
);
6352 format_odp_actions(result
, odp_actions
->data
, odp_actions
->size
);
6353 ds_put_char(result
, '\n');
6357 trace_resubmit(struct action_xlate_ctx
*ctx
, struct rule_dpif
*rule
)
6359 struct trace_ctx
*trace
= CONTAINER_OF(ctx
, struct trace_ctx
, ctx
);
6360 struct ds
*result
= trace
->result
;
6362 ds_put_char(result
, '\n');
6363 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
6364 trace_format_regs(result
, ctx
->recurse
+ 1, "Resubmitted regs", trace
);
6365 trace_format_odp(result
, ctx
->recurse
+ 1, "Resubmitted odp", trace
);
6366 trace_format_rule(result
, ctx
->table_id
, ctx
->recurse
+ 1, rule
);
6370 ofproto_unixctl_trace(struct unixctl_conn
*conn
, int argc
, const char *argv
[],
6371 void *aux OVS_UNUSED
)
6373 const char *dpname
= argv
[1];
6374 struct ofproto_dpif
*ofproto
;
6375 struct ofpbuf odp_key
;
6376 struct ofpbuf
*packet
;
6377 ovs_be16 initial_tci
;
6383 ofpbuf_init(&odp_key
, 0);
6386 ofproto
= ofproto_dpif_lookup(dpname
);
6388 unixctl_command_reply_error(conn
, "Unknown ofproto (use ofproto/list "
6392 if (argc
== 3 || (argc
== 4 && !strcmp(argv
[3], "-generate"))) {
6393 /* ofproto/trace dpname flow [-generate] */
6394 const char *flow_s
= argv
[2];
6395 const char *generate_s
= argv
[3];
6398 /* Convert string to datapath key. */
6399 ofpbuf_init(&odp_key
, 0);
6400 error
= odp_flow_key_from_string(flow_s
, NULL
, &odp_key
);
6402 unixctl_command_reply_error(conn
, "Bad flow syntax");
6406 /* Convert odp_key to flow. */
6407 error
= ofproto_dpif_extract_flow_key(ofproto
, odp_key
.data
,
6408 odp_key
.size
, &flow
,
6409 &initial_tci
, NULL
);
6410 if (error
== ODP_FIT_ERROR
) {
6411 unixctl_command_reply_error(conn
, "Invalid flow");
6415 /* Generate a packet, if requested. */
6417 packet
= ofpbuf_new(0);
6418 flow_compose(packet
, &flow
);
6420 } else if (argc
== 6) {
6421 /* ofproto/trace dpname priority tun_id in_port packet */
6422 const char *priority_s
= argv
[2];
6423 const char *tun_id_s
= argv
[3];
6424 const char *in_port_s
= argv
[4];
6425 const char *packet_s
= argv
[5];
6426 uint16_t in_port
= ofp_port_to_odp_port(atoi(in_port_s
));
6427 ovs_be64 tun_id
= htonll(strtoull(tun_id_s
, NULL
, 0));
6428 uint32_t priority
= atoi(priority_s
);
6431 msg
= eth_from_hex(packet_s
, &packet
);
6433 unixctl_command_reply_error(conn
, msg
);
6437 ds_put_cstr(&result
, "Packet: ");
6438 s
= ofp_packet_to_string(packet
->data
, packet
->size
);
6439 ds_put_cstr(&result
, s
);
6442 flow_extract(packet
, priority
, tun_id
, in_port
, &flow
);
6443 initial_tci
= flow
.vlan_tci
;
6445 unixctl_command_reply_error(conn
, "Bad command syntax");
6449 ofproto_trace(ofproto
, &flow
, packet
, initial_tci
, &result
);
6450 unixctl_command_reply(conn
, ds_cstr(&result
));
6453 ds_destroy(&result
);
6454 ofpbuf_delete(packet
);
6455 ofpbuf_uninit(&odp_key
);
6459 ofproto_trace(struct ofproto_dpif
*ofproto
, const struct flow
*flow
,
6460 const struct ofpbuf
*packet
, ovs_be16 initial_tci
,
6463 struct rule_dpif
*rule
;
6465 ds_put_cstr(ds
, "Flow: ");
6466 flow_format(ds
, flow
);
6467 ds_put_char(ds
, '\n');
6469 rule
= rule_dpif_lookup(ofproto
, flow
, 0);
6470 trace_format_rule(ds
, 0, 0, rule
);
6472 uint64_t odp_actions_stub
[1024 / 8];
6473 struct ofpbuf odp_actions
;
6475 struct trace_ctx trace
;
6478 tcp_flags
= packet
? packet_get_tcp_flags(packet
, flow
) : 0;
6481 ofpbuf_use_stub(&odp_actions
,
6482 odp_actions_stub
, sizeof odp_actions_stub
);
6483 action_xlate_ctx_init(&trace
.ctx
, ofproto
, flow
, initial_tci
,
6484 rule
, tcp_flags
, packet
);
6485 trace
.ctx
.resubmit_hook
= trace_resubmit
;
6486 xlate_actions(&trace
.ctx
, rule
->up
.actions
, rule
->up
.n_actions
,
6489 ds_put_char(ds
, '\n');
6490 trace_format_flow(ds
, 0, "Final flow", &trace
);
6491 ds_put_cstr(ds
, "Datapath actions: ");
6492 format_odp_actions(ds
, odp_actions
.data
, odp_actions
.size
);
6493 ofpbuf_uninit(&odp_actions
);
6495 if (!trace
.ctx
.may_set_up_flow
) {
6497 ds_put_cstr(ds
, "\nThis flow is not cachable.");
6499 ds_put_cstr(ds
, "\nThe datapath actions are incomplete--"
6500 "for complete actions, please supply a packet.");
6507 ofproto_dpif_clog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
6508 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
6511 unixctl_command_reply(conn
, NULL
);
6515 ofproto_dpif_unclog(struct unixctl_conn
*conn OVS_UNUSED
, int argc OVS_UNUSED
,
6516 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
6519 unixctl_command_reply(conn
, NULL
);
6522 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
6523 * 'reply' describing the results. */
6525 ofproto_dpif_self_check__(struct ofproto_dpif
*ofproto
, struct ds
*reply
)
6527 struct facet
*facet
;
6531 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
6532 if (!facet_check_consistency(facet
)) {
6537 ofproto
->need_revalidate
= true;
6541 ds_put_format(reply
, "%s: self-check failed (%d errors)\n",
6542 ofproto
->up
.name
, errors
);
6544 ds_put_format(reply
, "%s: self-check passed\n", ofproto
->up
.name
);
6549 ofproto_dpif_self_check(struct unixctl_conn
*conn
,
6550 int argc
, const char *argv
[], void *aux OVS_UNUSED
)
6552 struct ds reply
= DS_EMPTY_INITIALIZER
;
6553 struct ofproto_dpif
*ofproto
;
6556 ofproto
= ofproto_dpif_lookup(argv
[1]);
6558 unixctl_command_reply_error(conn
, "Unknown ofproto (use "
6559 "ofproto/list for help)");
6562 ofproto_dpif_self_check__(ofproto
, &reply
);
6564 HMAP_FOR_EACH (ofproto
, all_ofproto_dpifs_node
, &all_ofproto_dpifs
) {
6565 ofproto_dpif_self_check__(ofproto
, &reply
);
6569 unixctl_command_reply(conn
, ds_cstr(&reply
));
6574 ofproto_dpif_unixctl_init(void)
6576 static bool registered
;
6582 unixctl_command_register(
6584 "bridge {tun_id in_port packet | odp_flow [-generate]}",
6585 2, 5, ofproto_unixctl_trace
, NULL
);
6586 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6587 ofproto_unixctl_fdb_flush
, NULL
);
6588 unixctl_command_register("fdb/show", "bridge", 1, 1,
6589 ofproto_unixctl_fdb_show
, NULL
);
6590 unixctl_command_register("ofproto/clog", "", 0, 0,
6591 ofproto_dpif_clog
, NULL
);
6592 unixctl_command_register("ofproto/unclog", "", 0, 0,
6593 ofproto_dpif_unclog
, NULL
);
6594 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6595 ofproto_dpif_self_check
, NULL
);
6598 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6600 * This is deprecated. It is only for compatibility with broken device drivers
6601 * in old versions of Linux that do not properly support VLANs when VLAN
6602 * devices are not used. When broken device drivers are no longer in
6603 * widespread use, we will delete these interfaces. */
6606 set_realdev(struct ofport
*ofport_
, uint16_t realdev_ofp_port
, int vid
)
6608 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(ofport_
->ofproto
);
6609 struct ofport_dpif
*ofport
= ofport_dpif_cast(ofport_
);
6611 if (realdev_ofp_port
== ofport
->realdev_ofp_port
6612 && vid
== ofport
->vlandev_vid
) {
6616 ofproto
->need_revalidate
= true;
6618 if (ofport
->realdev_ofp_port
) {
6621 if (realdev_ofp_port
&& ofport
->bundle
) {
6622 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6623 * themselves be part of a bundle. */
6624 bundle_set(ofport
->up
.ofproto
, ofport
->bundle
, NULL
);
6627 ofport
->realdev_ofp_port
= realdev_ofp_port
;
6628 ofport
->vlandev_vid
= vid
;
6630 if (realdev_ofp_port
) {
6631 vsp_add(ofport
, realdev_ofp_port
, vid
);
6638 hash_realdev_vid(uint16_t realdev_ofp_port
, int vid
)
6640 return hash_2words(realdev_ofp_port
, vid
);
6643 /* Returns the ODP port number of the Linux VLAN device that corresponds to
6644 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
6645 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
6646 * it would return the port number of eth0.9.
6648 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
6649 * function just returns its 'realdev_odp_port' argument. */
6651 vsp_realdev_to_vlandev(const struct ofproto_dpif
*ofproto
,
6652 uint32_t realdev_odp_port
, ovs_be16 vlan_tci
)
6654 if (!hmap_is_empty(&ofproto
->realdev_vid_map
)) {
6655 uint16_t realdev_ofp_port
= odp_port_to_ofp_port(realdev_odp_port
);
6656 int vid
= vlan_tci_to_vid(vlan_tci
);
6657 const struct vlan_splinter
*vsp
;
6659 HMAP_FOR_EACH_WITH_HASH (vsp
, realdev_vid_node
,
6660 hash_realdev_vid(realdev_ofp_port
, vid
),
6661 &ofproto
->realdev_vid_map
) {
6662 if (vsp
->realdev_ofp_port
== realdev_ofp_port
6663 && vsp
->vid
== vid
) {
6664 return ofp_port_to_odp_port(vsp
->vlandev_ofp_port
);
6668 return realdev_odp_port
;
6671 static struct vlan_splinter
*
6672 vlandev_find(const struct ofproto_dpif
*ofproto
, uint16_t vlandev_ofp_port
)
6674 struct vlan_splinter
*vsp
;
6676 HMAP_FOR_EACH_WITH_HASH (vsp
, vlandev_node
, hash_int(vlandev_ofp_port
, 0),
6677 &ofproto
->vlandev_map
) {
6678 if (vsp
->vlandev_ofp_port
== vlandev_ofp_port
) {
6686 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6687 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6688 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6689 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6690 * eth0 and store 9 in '*vid'.
6692 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6693 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6696 vsp_vlandev_to_realdev(const struct ofproto_dpif
*ofproto
,
6697 uint16_t vlandev_ofp_port
, int *vid
)
6699 if (!hmap_is_empty(&ofproto
->vlandev_map
)) {
6700 const struct vlan_splinter
*vsp
;
6702 vsp
= vlandev_find(ofproto
, vlandev_ofp_port
);
6707 return vsp
->realdev_ofp_port
;
6714 vsp_remove(struct ofport_dpif
*port
)
6716 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
6717 struct vlan_splinter
*vsp
;
6719 vsp
= vlandev_find(ofproto
, port
->up
.ofp_port
);
6721 hmap_remove(&ofproto
->vlandev_map
, &vsp
->vlandev_node
);
6722 hmap_remove(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
);
6725 port
->realdev_ofp_port
= 0;
6727 VLOG_ERR("missing vlan device record");
6732 vsp_add(struct ofport_dpif
*port
, uint16_t realdev_ofp_port
, int vid
)
6734 struct ofproto_dpif
*ofproto
= ofproto_dpif_cast(port
->up
.ofproto
);
6736 if (!vsp_vlandev_to_realdev(ofproto
, port
->up
.ofp_port
, NULL
)
6737 && (vsp_realdev_to_vlandev(ofproto
, realdev_ofp_port
, htons(vid
))
6738 == realdev_ofp_port
)) {
6739 struct vlan_splinter
*vsp
;
6741 vsp
= xmalloc(sizeof *vsp
);
6742 hmap_insert(&ofproto
->vlandev_map
, &vsp
->vlandev_node
,
6743 hash_int(port
->up
.ofp_port
, 0));
6744 hmap_insert(&ofproto
->realdev_vid_map
, &vsp
->realdev_vid_node
,
6745 hash_realdev_vid(realdev_ofp_port
, vid
));
6746 vsp
->realdev_ofp_port
= realdev_ofp_port
;
6747 vsp
->vlandev_ofp_port
= port
->up
.ofp_port
;
6750 port
->realdev_ofp_port
= realdev_ofp_port
;
6752 VLOG_ERR("duplicate vlan device record");
6756 const struct ofproto_class ofproto_dpif_class
= {
6785 port_is_lacp_current
,
6786 NULL
, /* rule_choose_table */
6793 rule_modify_actions
,
6801 get_cfm_remote_mpids
,
6806 get_stp_port_status
,
6813 is_mirror_output_bundle
,
6814 forward_bpdu_changed
,