2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
25 #include "byte-order.h"
26 #include "classifier.h"
29 #include "dynamic-string.h"
32 #include "meta-flow.h"
35 #include "ofp-actions.h"
36 #include "ofp-errors.h"
38 #include "ofp-print.h"
41 #include "ofproto-provider.h"
42 #include "openflow/nicira-ext.h"
43 #include "openflow/openflow.h"
47 #include "poll-loop.h"
53 #include "unaligned.h"
57 VLOG_DEFINE_THIS_MODULE(ofproto
);
59 COVERAGE_DEFINE(ofproto_error
);
60 COVERAGE_DEFINE(ofproto_flush
);
61 COVERAGE_DEFINE(ofproto_no_packet_in
);
62 COVERAGE_DEFINE(ofproto_packet_out
);
63 COVERAGE_DEFINE(ofproto_queue_req
);
64 COVERAGE_DEFINE(ofproto_recv_openflow
);
65 COVERAGE_DEFINE(ofproto_reinit_ports
);
66 COVERAGE_DEFINE(ofproto_uninstallable
);
67 COVERAGE_DEFINE(ofproto_update_port
);
70 S_OPENFLOW
, /* Processing OpenFlow commands. */
71 S_EVICT
, /* Evicting flows from over-limit tables. */
72 S_FLUSH
, /* Deleting all flow table rules. */
75 enum ofoperation_type
{
81 /* A single OpenFlow request can execute any number of operations. The
82 * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the
83 * ofconn to which an error reply should be sent if necessary.
85 * ofproto initiates some operations internally. These operations are still
86 * assigned to groups but will not have an associated ofconn. */
88 struct ofproto
*ofproto
; /* Owning ofproto. */
89 struct list ofproto_node
; /* In ofproto's "pending" list. */
90 struct list ops
; /* List of "struct ofoperation"s. */
91 int n_running
; /* Number of ops still pending. */
93 /* Data needed to send OpenFlow reply on failure or to send a buffered
96 * If list_is_empty(ofconn_node) then this ofopgroup never had an
97 * associated ofconn or its ofconn's connection dropped after it initiated
98 * the operation. In the latter case 'ofconn' is a wild pointer that
99 * refers to freed memory, so the 'ofconn' member must be used only if
100 * !list_is_empty(ofconn_node).
102 struct list ofconn_node
; /* In ofconn's list of pending opgroups. */
103 struct ofconn
*ofconn
; /* ofconn for reply (but see note above). */
104 struct ofp_header
*request
; /* Original request (truncated at 64 bytes). */
105 uint32_t buffer_id
; /* Buffer id from original request. */
108 static struct ofopgroup
*ofopgroup_create_unattached(struct ofproto
*);
109 static struct ofopgroup
*ofopgroup_create(struct ofproto
*, struct ofconn
*,
110 const struct ofp_header
*,
112 static void ofopgroup_submit(struct ofopgroup
*);
113 static void ofopgroup_complete(struct ofopgroup
*);
115 /* A single flow table operation. */
117 struct ofopgroup
*group
; /* Owning group. */
118 struct list group_node
; /* In ofopgroup's "ops" list. */
119 struct hmap_node hmap_node
; /* In ofproto's "deletions" hmap. */
120 struct rule
*rule
; /* Rule being operated upon. */
121 enum ofoperation_type type
; /* Type of operation. */
123 /* OFOPERATION_ADD. */
124 struct rule
*victim
; /* Rule being replaced, if any.. */
126 /* OFOPERATION_MODIFY: The old actions, if the actions are changing. */
127 struct ofpact
*ofpacts
;
130 /* OFOPERATION_DELETE. */
131 enum ofp_flow_removed_reason reason
; /* Reason flow was removed. */
133 ovs_be64 flow_cookie
; /* Rule's old flow cookie. */
134 enum ofperr error
; /* 0 if no error. */
137 static struct ofoperation
*ofoperation_create(struct ofopgroup
*,
139 enum ofoperation_type
,
140 enum ofp_flow_removed_reason
);
141 static void ofoperation_destroy(struct ofoperation
*);
144 static void oftable_init(struct oftable
*);
145 static void oftable_destroy(struct oftable
*);
147 static void oftable_set_name(struct oftable
*, const char *name
);
149 static void oftable_disable_eviction(struct oftable
*);
150 static void oftable_enable_eviction(struct oftable
*,
151 const struct mf_subfield
*fields
,
154 static void oftable_remove_rule(struct rule
*);
155 static struct rule
*oftable_replace_rule(struct rule
*);
156 static void oftable_substitute_rule(struct rule
*old
, struct rule
*new);
158 /* A set of rules within a single OpenFlow table (oftable) that have the same
159 * values for the oftable's eviction_fields. A rule to be evicted, when one is
160 * needed, is taken from the eviction group that contains the greatest number
163 * An oftable owns any number of eviction groups, each of which contains any
166 * Membership in an eviction group is imprecise, based on the hash of the
167 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
168 * That is, if two rules have different eviction_fields, but those
169 * eviction_fields hash to the same value, then they will belong to the same
170 * eviction_group anyway.
172 * (When eviction is not enabled on an oftable, we don't track any eviction
173 * groups, to save time and space.) */
174 struct eviction_group
{
175 struct hmap_node id_node
; /* In oftable's "eviction_groups_by_id". */
176 struct heap_node size_node
; /* In oftable's "eviction_groups_by_size". */
177 struct heap rules
; /* Contains "struct rule"s. */
180 static struct rule
*choose_rule_to_evict(struct oftable
*);
181 static void ofproto_evict(struct ofproto
*);
182 static uint32_t rule_eviction_priority(struct rule
*);
185 static void ofport_destroy__(struct ofport
*);
186 static void ofport_destroy(struct ofport
*);
188 static void update_port(struct ofproto
*, const char *devname
);
189 static int init_ports(struct ofproto
*);
190 static void reinit_ports(struct ofproto
*);
193 static void ofproto_rule_destroy__(struct rule
*);
194 static void ofproto_rule_send_removed(struct rule
*, uint8_t reason
);
195 static bool rule_is_modifiable(const struct rule
*);
198 static enum ofperr
add_flow(struct ofproto
*, struct ofconn
*,
199 const struct ofputil_flow_mod
*,
200 const struct ofp_header
*);
201 static void delete_flow__(struct rule
*, struct ofopgroup
*,
202 enum ofp_flow_removed_reason
);
203 static bool handle_openflow(struct ofconn
*, const struct ofpbuf
*);
204 static enum ofperr
handle_flow_mod__(struct ofproto
*, struct ofconn
*,
205 const struct ofputil_flow_mod
*,
206 const struct ofp_header
*);
207 static void calc_duration(long long int start
, long long int now
,
208 uint32_t *sec
, uint32_t *nsec
);
211 static uint64_t pick_datapath_id(const struct ofproto
*);
212 static uint64_t pick_fallback_dpid(void);
213 static void ofproto_destroy__(struct ofproto
*);
214 static void update_mtu(struct ofproto
*, struct ofport
*);
217 static void ofproto_unixctl_init(void);
219 /* All registered ofproto classes, in probe order. */
220 static const struct ofproto_class
**ofproto_classes
;
221 static size_t n_ofproto_classes
;
222 static size_t allocated_ofproto_classes
;
224 unsigned flow_eviction_threshold
= OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT
;
225 enum ofproto_flow_miss_model flow_miss_model
= OFPROTO_HANDLE_MISS_AUTO
;
227 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
228 static struct hmap all_ofprotos
= HMAP_INITIALIZER(&all_ofprotos
);
230 /* Initial mappings of port to OpenFlow number mappings. */
231 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
233 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
235 /* The default value of true waits for flow restore. */
236 static bool flow_restore_wait
= true;
238 /* Must be called to initialize the ofproto library.
240 * The caller may pass in 'iface_hints', which contains an shash of
241 * "iface_hint" elements indexed by the interface's name. The provider
242 * may use these hints to describe the startup configuration in order to
243 * reinitialize its state. The caller owns the provided data, so a
244 * provider will make copies of anything required. An ofproto provider
245 * will remove any existing state that is not described by the hint, and
246 * may choose to remove it all. */
248 ofproto_init(const struct shash
*iface_hints
)
250 struct shash_node
*node
;
253 ofproto_class_register(&ofproto_dpif_class
);
255 /* Make a local copy, since we don't own 'iface_hints' elements. */
256 SHASH_FOR_EACH(node
, iface_hints
) {
257 const struct iface_hint
*orig_hint
= node
->data
;
258 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
259 const char *br_type
= ofproto_normalize_type(orig_hint
->br_type
);
261 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
262 new_hint
->br_type
= xstrdup(br_type
);
263 new_hint
->ofp_port
= orig_hint
->ofp_port
;
265 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
268 for (i
= 0; i
< n_ofproto_classes
; i
++) {
269 ofproto_classes
[i
]->init(&init_ofp_ports
);
273 /* 'type' should be a normalized datapath type, as returned by
274 * ofproto_normalize_type(). Returns the corresponding ofproto_class
275 * structure, or a null pointer if there is none registered for 'type'. */
276 static const struct ofproto_class
*
277 ofproto_class_find__(const char *type
)
281 for (i
= 0; i
< n_ofproto_classes
; i
++) {
282 const struct ofproto_class
*class = ofproto_classes
[i
];
287 class->enumerate_types(&types
);
288 found
= sset_contains(&types
, type
);
289 sset_destroy(&types
);
295 VLOG_WARN("unknown datapath type %s", type
);
299 /* Registers a new ofproto class. After successful registration, new ofprotos
300 * of that type can be created using ofproto_create(). */
302 ofproto_class_register(const struct ofproto_class
*new_class
)
306 for (i
= 0; i
< n_ofproto_classes
; i
++) {
307 if (ofproto_classes
[i
] == new_class
) {
312 if (n_ofproto_classes
>= allocated_ofproto_classes
) {
313 ofproto_classes
= x2nrealloc(ofproto_classes
,
314 &allocated_ofproto_classes
,
315 sizeof *ofproto_classes
);
317 ofproto_classes
[n_ofproto_classes
++] = new_class
;
321 /* Unregisters a datapath provider. 'type' must have been previously
322 * registered and not currently be in use by any ofprotos. After
323 * unregistration new datapaths of that type cannot be opened using
324 * ofproto_create(). */
326 ofproto_class_unregister(const struct ofproto_class
*class)
330 for (i
= 0; i
< n_ofproto_classes
; i
++) {
331 if (ofproto_classes
[i
] == class) {
332 for (i
++; i
< n_ofproto_classes
; i
++) {
333 ofproto_classes
[i
- 1] = ofproto_classes
[i
];
339 VLOG_WARN("attempted to unregister an ofproto class that is not "
344 /* Clears 'types' and enumerates all registered ofproto types into it. The
345 * caller must first initialize the sset. */
347 ofproto_enumerate_types(struct sset
*types
)
351 for (i
= 0; i
< n_ofproto_classes
; i
++) {
352 ofproto_classes
[i
]->enumerate_types(types
);
356 /* Returns the fully spelled out name for the given ofproto 'type'.
358 * Normalized type string can be compared with strcmp(). Unnormalized type
359 * string might be the same even if they have different spellings. */
361 ofproto_normalize_type(const char *type
)
363 return type
&& type
[0] ? type
: "system";
366 /* Clears 'names' and enumerates the names of all known created ofprotos with
367 * the given 'type'. The caller must first initialize the sset. Returns 0 if
368 * successful, otherwise a positive errno value.
370 * Some kinds of datapaths might not be practically enumerable. This is not
371 * considered an error. */
373 ofproto_enumerate_names(const char *type
, struct sset
*names
)
375 const struct ofproto_class
*class = ofproto_class_find__(type
);
376 return class ? class->enumerate_names(type
, names
) : EAFNOSUPPORT
;
380 ofproto_create(const char *datapath_name
, const char *datapath_type
,
381 struct ofproto
**ofprotop
)
383 const struct ofproto_class
*class;
384 struct ofproto
*ofproto
;
390 ofproto_unixctl_init();
392 datapath_type
= ofproto_normalize_type(datapath_type
);
393 class = ofproto_class_find__(datapath_type
);
395 VLOG_WARN("could not create datapath %s of unknown type %s",
396 datapath_name
, datapath_type
);
400 ofproto
= class->alloc();
402 VLOG_ERR("failed to allocate datapath %s of type %s",
403 datapath_name
, datapath_type
);
408 memset(ofproto
, 0, sizeof *ofproto
);
409 ofproto
->ofproto_class
= class;
410 ofproto
->name
= xstrdup(datapath_name
);
411 ofproto
->type
= xstrdup(datapath_type
);
412 hmap_insert(&all_ofprotos
, &ofproto
->hmap_node
,
413 hash_string(ofproto
->name
, 0));
414 ofproto
->datapath_id
= 0;
415 ofproto
->forward_bpdu
= false;
416 ofproto
->fallback_dpid
= pick_fallback_dpid();
417 ofproto
->mfr_desc
= NULL
;
418 ofproto
->hw_desc
= NULL
;
419 ofproto
->sw_desc
= NULL
;
420 ofproto
->serial_desc
= NULL
;
421 ofproto
->dp_desc
= NULL
;
422 ofproto
->frag_handling
= OFPC_FRAG_NORMAL
;
423 hmap_init(&ofproto
->ports
);
424 shash_init(&ofproto
->port_by_name
);
425 simap_init(&ofproto
->ofp_requests
);
426 ofproto
->max_ports
= OFPP_MAX
;
427 ofproto
->tables
= NULL
;
428 ofproto
->n_tables
= 0;
429 hindex_init(&ofproto
->cookies
);
430 list_init(&ofproto
->expirable
);
431 ofproto
->connmgr
= connmgr_create(ofproto
, datapath_name
, datapath_name
);
432 ofproto
->state
= S_OPENFLOW
;
433 list_init(&ofproto
->pending
);
434 ofproto
->n_pending
= 0;
435 hmap_init(&ofproto
->deletions
);
436 ofproto
->n_add
= ofproto
->n_delete
= ofproto
->n_modify
= 0;
437 ofproto
->first_op
= ofproto
->last_op
= LLONG_MIN
;
438 ofproto
->next_op_report
= LLONG_MAX
;
439 ofproto
->op_backoff
= LLONG_MIN
;
440 ofproto
->vlan_bitmap
= NULL
;
441 ofproto
->vlans_changed
= false;
442 ofproto
->min_mtu
= INT_MAX
;
444 error
= ofproto
->ofproto_class
->construct(ofproto
);
446 VLOG_ERR("failed to open datapath %s: %s",
447 datapath_name
, strerror(error
));
448 ofproto_destroy__(ofproto
);
452 /* The "max_ports" member should have been set by ->construct(ofproto).
453 * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */
454 ofproto
->ofp_port_ids
= bitmap_allocate(ofp_to_u16(ofproto
->max_ports
));
455 bitmap_set1(ofproto
->ofp_port_ids
, 0);
457 /* Check that hidden tables, if any, are at the end. */
458 ovs_assert(ofproto
->n_tables
);
459 for (i
= 0; i
+ 1 < ofproto
->n_tables
; i
++) {
460 enum oftable_flags flags
= ofproto
->tables
[i
].flags
;
461 enum oftable_flags next_flags
= ofproto
->tables
[i
+ 1].flags
;
463 ovs_assert(!(flags
& OFTABLE_HIDDEN
) || next_flags
& OFTABLE_HIDDEN
);
466 ofproto
->datapath_id
= pick_datapath_id(ofproto
);
473 /* Must be called (only) by an ofproto implementation in its constructor
474 * function. See the large comment on 'construct' in struct ofproto_class for
477 ofproto_init_tables(struct ofproto
*ofproto
, int n_tables
)
479 struct oftable
*table
;
481 ovs_assert(!ofproto
->n_tables
);
482 ovs_assert(n_tables
>= 1 && n_tables
<= 255);
484 ofproto
->n_tables
= n_tables
;
485 ofproto
->tables
= xmalloc(n_tables
* sizeof *ofproto
->tables
);
486 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
491 /* To be optionally called (only) by an ofproto implementation in its
492 * constructor function. See the large comment on 'construct' in struct
493 * ofproto_class for details.
495 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
496 * will then ensure that actions passed into the ofproto implementation will
497 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
498 * function is not called, there will be no such restriction.
500 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
501 * the 'max_ports' restriction. */
503 ofproto_init_max_ports(struct ofproto
*ofproto
, ofp_port_t max_ports
)
505 ovs_assert(ofp_to_u16(max_ports
) <= ofp_to_u16(OFPP_MAX
));
506 ofproto
->max_ports
= max_ports
;
510 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
512 return ofproto
->datapath_id
;
516 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
518 uint64_t old_dpid
= p
->datapath_id
;
519 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
520 if (p
->datapath_id
!= old_dpid
) {
521 /* Force all active connections to reconnect, since there is no way to
522 * notify a controller that the datapath ID has changed. */
523 ofproto_reconnect_controllers(p
);
528 ofproto_set_controllers(struct ofproto
*p
,
529 const struct ofproto_controller
*controllers
,
530 size_t n_controllers
, uint32_t allowed_versions
)
532 connmgr_set_controllers(p
->connmgr
, controllers
, n_controllers
,
537 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
539 connmgr_set_fail_mode(p
->connmgr
, fail_mode
);
542 /* Drops the connections between 'ofproto' and all of its controllers, forcing
543 * them to reconnect. */
545 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
547 connmgr_reconnect(ofproto
->connmgr
);
550 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
551 * in-band control should guarantee access, in the same way that in-band
552 * control guarantees access to OpenFlow controllers. */
554 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
555 const struct sockaddr_in
*extras
, size_t n
)
557 connmgr_set_extra_in_band_remotes(ofproto
->connmgr
, extras
, n
);
560 /* Sets the OpenFlow queue used by flows set up by in-band control on
561 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
562 * flows will use the default queue. */
564 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
566 connmgr_set_in_band_queue(ofproto
->connmgr
, queue_id
);
569 /* Sets the number of flows at which eviction from the kernel flow table
572 ofproto_set_flow_eviction_threshold(unsigned threshold
)
574 flow_eviction_threshold
= MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN
,
578 /* Sets the path for handling flow misses. */
580 ofproto_set_flow_miss_model(unsigned model
)
582 flow_miss_model
= model
;
585 /* If forward_bpdu is true, the NORMAL action will forward frames with
586 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
587 * the NORMAL action will drop these frames. */
589 ofproto_set_forward_bpdu(struct ofproto
*ofproto
, bool forward_bpdu
)
591 bool old_val
= ofproto
->forward_bpdu
;
592 ofproto
->forward_bpdu
= forward_bpdu
;
593 if (old_val
!= ofproto
->forward_bpdu
) {
594 if (ofproto
->ofproto_class
->forward_bpdu_changed
) {
595 ofproto
->ofproto_class
->forward_bpdu_changed(ofproto
);
600 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
601 * 'idle_time', in seconds, and the maximum number of MAC table entries to
604 ofproto_set_mac_table_config(struct ofproto
*ofproto
, unsigned idle_time
,
607 if (ofproto
->ofproto_class
->set_mac_table_config
) {
608 ofproto
->ofproto_class
->set_mac_table_config(ofproto
, idle_time
,
614 ofproto_set_dp_desc(struct ofproto
*p
, const char *dp_desc
)
617 p
->dp_desc
= dp_desc
? xstrdup(dp_desc
) : NULL
;
621 ofproto_set_snoops(struct ofproto
*ofproto
, const struct sset
*snoops
)
623 return connmgr_set_snoops(ofproto
->connmgr
, snoops
);
627 ofproto_set_netflow(struct ofproto
*ofproto
,
628 const struct netflow_options
*nf_options
)
630 if (nf_options
&& sset_is_empty(&nf_options
->collectors
)) {
634 if (ofproto
->ofproto_class
->set_netflow
) {
635 return ofproto
->ofproto_class
->set_netflow(ofproto
, nf_options
);
637 return nf_options
? EOPNOTSUPP
: 0;
642 ofproto_set_sflow(struct ofproto
*ofproto
,
643 const struct ofproto_sflow_options
*oso
)
645 if (oso
&& sset_is_empty(&oso
->targets
)) {
649 if (ofproto
->ofproto_class
->set_sflow
) {
650 return ofproto
->ofproto_class
->set_sflow(ofproto
, oso
);
652 return oso
? EOPNOTSUPP
: 0;
657 ofproto_set_ipfix(struct ofproto
*ofproto
,
658 const struct ofproto_ipfix_bridge_exporter_options
*bo
,
659 const struct ofproto_ipfix_flow_exporter_options
*fo
,
662 if (ofproto
->ofproto_class
->set_ipfix
) {
663 return ofproto
->ofproto_class
->set_ipfix(ofproto
, bo
, fo
, n_fo
);
665 return (bo
|| fo
) ? EOPNOTSUPP
: 0;
670 ofproto_set_flow_restore_wait(bool flow_restore_wait_db
)
672 flow_restore_wait
= flow_restore_wait_db
;
676 ofproto_get_flow_restore_wait(void)
678 return flow_restore_wait
;
682 /* Spanning Tree Protocol (STP) configuration. */
684 /* Configures STP on 'ofproto' using the settings defined in 's'. If
685 * 's' is NULL, disables STP.
687 * Returns 0 if successful, otherwise a positive errno value. */
689 ofproto_set_stp(struct ofproto
*ofproto
,
690 const struct ofproto_stp_settings
*s
)
692 return (ofproto
->ofproto_class
->set_stp
693 ? ofproto
->ofproto_class
->set_stp(ofproto
, s
)
697 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
698 * 'enabled' member of 's' is false, then the other members are not
701 * Returns 0 if successful, otherwise a positive errno value. */
703 ofproto_get_stp_status(struct ofproto
*ofproto
,
704 struct ofproto_stp_status
*s
)
706 return (ofproto
->ofproto_class
->get_stp_status
707 ? ofproto
->ofproto_class
->get_stp_status(ofproto
, s
)
711 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
712 * in 's'. The caller is responsible for assigning STP port numbers
713 * (using the 'port_num' member in the range of 1 through 255, inclusive)
714 * and ensuring there are no duplicates. If the 's' is NULL, then STP
715 * is disabled on the port.
717 * Returns 0 if successful, otherwise a positive errno value.*/
719 ofproto_port_set_stp(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
720 const struct ofproto_port_stp_settings
*s
)
722 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
724 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16
,
725 ofproto
->name
, ofp_port
);
729 return (ofproto
->ofproto_class
->set_stp_port
730 ? ofproto
->ofproto_class
->set_stp_port(ofport
, s
)
734 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
735 * 's'. If the 'enabled' member in 's' is false, then the other members
736 * are not meaningful.
738 * Returns 0 if successful, otherwise a positive errno value.*/
740 ofproto_port_get_stp_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
741 struct ofproto_port_stp_status
*s
)
743 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
745 VLOG_WARN_RL(&rl
, "%s: cannot get STP status on nonexistent "
746 "port %"PRIu16
, ofproto
->name
, ofp_port
);
750 return (ofproto
->ofproto_class
->get_stp_port_status
751 ? ofproto
->ofproto_class
->get_stp_port_status(ofport
, s
)
755 /* Queue DSCP configuration. */
757 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
758 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
759 * to implement QoS. Instead, it is used to implement features which require
760 * knowledge of what queues exist on a port, and some basic information about
763 * Returns 0 if successful, otherwise a positive errno value. */
765 ofproto_port_set_queues(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
766 const struct ofproto_port_queue
*queues
,
769 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
772 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16
,
773 ofproto
->name
, ofp_port
);
777 return (ofproto
->ofproto_class
->set_queues
778 ? ofproto
->ofproto_class
->set_queues(ofport
, queues
, n_queues
)
782 /* Connectivity Fault Management configuration. */
784 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
786 ofproto_port_clear_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
788 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
789 if (ofport
&& ofproto
->ofproto_class
->set_cfm
) {
790 ofproto
->ofproto_class
->set_cfm(ofport
, NULL
);
794 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
795 * basic configuration from the configuration members in 'cfm', and the remote
796 * maintenance point ID from remote_mpid. Ignores the statistics members of
799 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
801 ofproto_port_set_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
802 const struct cfm_settings
*s
)
804 struct ofport
*ofport
;
807 ofport
= ofproto_get_port(ofproto
, ofp_port
);
809 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16
,
810 ofproto
->name
, ofp_port
);
814 /* XXX: For configuration simplicity, we only support one remote_mpid
815 * outside of the CFM module. It's not clear if this is the correct long
816 * term solution or not. */
817 error
= (ofproto
->ofproto_class
->set_cfm
818 ? ofproto
->ofproto_class
->set_cfm(ofport
, s
)
821 VLOG_WARN("%s: CFM configuration on port %"PRIu16
" (%s) failed (%s)",
822 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
827 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
828 * 'ofproto' does not have a port 'ofp_port'. */
830 ofproto_port_set_bfd(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
831 const struct smap
*cfg
)
833 struct ofport
*ofport
;
836 ofport
= ofproto_get_port(ofproto
, ofp_port
);
838 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16
,
839 ofproto
->name
, ofp_port
);
843 error
= (ofproto
->ofproto_class
->set_bfd
844 ? ofproto
->ofproto_class
->set_bfd(ofport
, cfg
)
847 VLOG_WARN("%s: bfd configuration on port %"PRIu16
" (%s) failed (%s)",
848 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
853 /* Populates 'status' with key value pairs indicating the status of the BFD
854 * session on 'ofp_port'. This information is intended to be populated in the
855 * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in
858 ofproto_port_get_bfd_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
861 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
862 return (ofport
&& ofproto
->ofproto_class
->get_bfd_status
863 ? ofproto
->ofproto_class
->get_bfd_status(ofport
, status
)
867 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
868 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
869 * 0 if LACP partner information is not current (generally indicating a
870 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
872 ofproto_port_is_lacp_current(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
874 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
875 return (ofport
&& ofproto
->ofproto_class
->port_is_lacp_current
876 ? ofproto
->ofproto_class
->port_is_lacp_current(ofport
)
882 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
883 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
884 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
885 * configuration plus, if there is more than one slave, a bonding
888 * If 'aux' is already registered then this function updates its configuration
889 * to 's'. Otherwise, this function registers a new bundle.
891 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
894 ofproto_bundle_register(struct ofproto
*ofproto
, void *aux
,
895 const struct ofproto_bundle_settings
*s
)
897 return (ofproto
->ofproto_class
->bundle_set
898 ? ofproto
->ofproto_class
->bundle_set(ofproto
, aux
, s
)
902 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
903 * If no such bundle has been registered, this has no effect. */
905 ofproto_bundle_unregister(struct ofproto
*ofproto
, void *aux
)
907 return ofproto_bundle_register(ofproto
, aux
, NULL
);
911 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
912 * If 'aux' is already registered then this function updates its configuration
913 * to 's'. Otherwise, this function registers a new mirror. */
915 ofproto_mirror_register(struct ofproto
*ofproto
, void *aux
,
916 const struct ofproto_mirror_settings
*s
)
918 return (ofproto
->ofproto_class
->mirror_set
919 ? ofproto
->ofproto_class
->mirror_set(ofproto
, aux
, s
)
923 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
924 * If no mirror has been registered, this has no effect. */
926 ofproto_mirror_unregister(struct ofproto
*ofproto
, void *aux
)
928 return ofproto_mirror_register(ofproto
, aux
, NULL
);
931 /* Retrieves statistics from mirror associated with client data pointer
932 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
933 * 'bytes', respectively. If a particular counters is not supported,
934 * the appropriate argument is set to UINT64_MAX. */
936 ofproto_mirror_get_stats(struct ofproto
*ofproto
, void *aux
,
937 uint64_t *packets
, uint64_t *bytes
)
939 if (!ofproto
->ofproto_class
->mirror_get_stats
) {
940 *packets
= *bytes
= UINT64_MAX
;
944 return ofproto
->ofproto_class
->mirror_get_stats(ofproto
, aux
,
948 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
949 * which all packets are flooded, instead of using MAC learning. If
950 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
952 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
955 ofproto_set_flood_vlans(struct ofproto
*ofproto
, unsigned long *flood_vlans
)
957 return (ofproto
->ofproto_class
->set_flood_vlans
958 ? ofproto
->ofproto_class
->set_flood_vlans(ofproto
, flood_vlans
)
962 /* Returns true if 'aux' is a registered bundle that is currently in use as the
963 * output for a mirror. */
965 ofproto_is_mirror_output_bundle(const struct ofproto
*ofproto
, void *aux
)
967 return (ofproto
->ofproto_class
->is_mirror_output_bundle
968 ? ofproto
->ofproto_class
->is_mirror_output_bundle(ofproto
, aux
)
972 /* Configuration of OpenFlow tables. */
974 /* Returns the number of OpenFlow tables in 'ofproto'. */
976 ofproto_get_n_tables(const struct ofproto
*ofproto
)
978 return ofproto
->n_tables
;
981 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
982 * settings from 's'. 'table_id' must be in the range 0 through the number of
983 * OpenFlow tables in 'ofproto' minus 1, inclusive.
985 * For read-only tables, only the name may be configured. */
987 ofproto_configure_table(struct ofproto
*ofproto
, int table_id
,
988 const struct ofproto_table_settings
*s
)
990 struct oftable
*table
;
992 ovs_assert(table_id
>= 0 && table_id
< ofproto
->n_tables
);
993 table
= &ofproto
->tables
[table_id
];
995 oftable_set_name(table
, s
->name
);
997 if (table
->flags
& OFTABLE_READONLY
) {
1002 oftable_enable_eviction(table
, s
->groups
, s
->n_groups
);
1004 oftable_disable_eviction(table
);
1007 table
->max_flows
= s
->max_flows
;
1008 if (classifier_count(&table
->cls
) > table
->max_flows
1009 && table
->eviction_fields
) {
1010 /* 'table' contains more flows than allowed. We might not be able to
1011 * evict them right away because of the asynchronous nature of flow
1012 * table changes. Schedule eviction for later. */
1013 switch (ofproto
->state
) {
1015 ofproto
->state
= S_EVICT
;
1019 /* We're already deleting flows, nothing more to do. */
1026 ofproto_has_snoops(const struct ofproto
*ofproto
)
1028 return connmgr_has_snoops(ofproto
->connmgr
);
1032 ofproto_get_snoops(const struct ofproto
*ofproto
, struct sset
*snoops
)
1034 connmgr_get_snoops(ofproto
->connmgr
, snoops
);
1038 ofproto_flush__(struct ofproto
*ofproto
)
1040 struct ofopgroup
*group
;
1041 struct oftable
*table
;
1043 if (ofproto
->ofproto_class
->flush
) {
1044 ofproto
->ofproto_class
->flush(ofproto
);
1047 group
= ofopgroup_create_unattached(ofproto
);
1048 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1049 struct rule
*rule
, *next_rule
;
1050 struct cls_cursor cursor
;
1052 if (table
->flags
& OFTABLE_HIDDEN
) {
1056 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1057 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1058 if (!rule
->pending
) {
1059 ofoperation_create(group
, rule
, OFOPERATION_DELETE
,
1061 oftable_remove_rule(rule
);
1062 ofproto
->ofproto_class
->rule_destruct(rule
);
1066 ofopgroup_submit(group
);
1070 ofproto_destroy__(struct ofproto
*ofproto
)
1072 struct oftable
*table
;
1074 ovs_assert(list_is_empty(&ofproto
->pending
));
1075 ovs_assert(!ofproto
->n_pending
);
1077 connmgr_destroy(ofproto
->connmgr
);
1079 hmap_remove(&all_ofprotos
, &ofproto
->hmap_node
);
1080 free(ofproto
->name
);
1081 free(ofproto
->type
);
1082 free(ofproto
->mfr_desc
);
1083 free(ofproto
->hw_desc
);
1084 free(ofproto
->sw_desc
);
1085 free(ofproto
->serial_desc
);
1086 free(ofproto
->dp_desc
);
1087 hmap_destroy(&ofproto
->ports
);
1088 shash_destroy(&ofproto
->port_by_name
);
1089 bitmap_free(ofproto
->ofp_port_ids
);
1090 simap_destroy(&ofproto
->ofp_requests
);
1092 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1093 oftable_destroy(table
);
1095 free(ofproto
->tables
);
1097 hmap_destroy(&ofproto
->deletions
);
1099 free(ofproto
->vlan_bitmap
);
1101 ofproto
->ofproto_class
->dealloc(ofproto
);
1105 ofproto_destroy(struct ofproto
*p
)
1107 struct ofport
*ofport
, *next_ofport
;
1114 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1115 ofport_destroy(ofport
);
1118 p
->ofproto_class
->destruct(p
);
1119 ofproto_destroy__(p
);
1122 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1123 * kernel datapath, for example, this destroys the datapath in the kernel, and
1124 * with the netdev-based datapath, it tears down the data structures that
1125 * represent the datapath.
1127 * The datapath should not be currently open as an ofproto. */
1129 ofproto_delete(const char *name
, const char *type
)
1131 const struct ofproto_class
*class = ofproto_class_find__(type
);
1132 return (!class ? EAFNOSUPPORT
1133 : !class->del
? EACCES
1134 : class->del(type
, name
));
1138 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1140 if (error
== ENOBUFS
) {
1141 reinit_ports(ofproto
);
1142 } else if (!error
) {
1143 update_port(ofproto
, devname
);
1149 ofproto_type_run(const char *datapath_type
)
1151 const struct ofproto_class
*class;
1154 datapath_type
= ofproto_normalize_type(datapath_type
);
1155 class = ofproto_class_find__(datapath_type
);
1157 error
= class->type_run
? class->type_run(datapath_type
) : 0;
1158 if (error
&& error
!= EAGAIN
) {
1159 VLOG_ERR_RL(&rl
, "%s: type_run failed (%s)",
1160 datapath_type
, strerror(error
));
1166 ofproto_type_run_fast(const char *datapath_type
)
1168 const struct ofproto_class
*class;
1171 datapath_type
= ofproto_normalize_type(datapath_type
);
1172 class = ofproto_class_find__(datapath_type
);
1174 error
= class->type_run_fast
? class->type_run_fast(datapath_type
) : 0;
1175 if (error
&& error
!= EAGAIN
) {
1176 VLOG_ERR_RL(&rl
, "%s: type_run_fast failed (%s)",
1177 datapath_type
, strerror(error
));
1183 ofproto_type_wait(const char *datapath_type
)
1185 const struct ofproto_class
*class;
1187 datapath_type
= ofproto_normalize_type(datapath_type
);
1188 class = ofproto_class_find__(datapath_type
);
1190 if (class->type_wait
) {
1191 class->type_wait(datapath_type
);
1196 ofproto_run(struct ofproto
*p
)
1198 struct sset changed_netdevs
;
1199 const char *changed_netdev
;
1200 struct ofport
*ofport
;
1203 error
= p
->ofproto_class
->run(p
);
1204 if (error
&& error
!= EAGAIN
) {
1205 VLOG_ERR_RL(&rl
, "%s: run failed (%s)", p
->name
, strerror(error
));
1208 if (p
->ofproto_class
->port_poll
) {
1211 while ((error
= p
->ofproto_class
->port_poll(p
, &devname
)) != EAGAIN
) {
1212 process_port_change(p
, error
, devname
);
1216 /* Update OpenFlow port status for any port whose netdev has changed.
1218 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1219 * destroyed, so it's not safe to update ports directly from the
1220 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1221 * need this two-phase approach. */
1222 sset_init(&changed_netdevs
);
1223 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1224 unsigned int change_seq
= netdev_change_seq(ofport
->netdev
);
1225 if (ofport
->change_seq
!= change_seq
) {
1226 ofport
->change_seq
= change_seq
;
1227 sset_add(&changed_netdevs
, netdev_get_name(ofport
->netdev
));
1230 SSET_FOR_EACH (changed_netdev
, &changed_netdevs
) {
1231 update_port(p
, changed_netdev
);
1233 sset_destroy(&changed_netdevs
);
1237 connmgr_run(p
->connmgr
, handle_openflow
);
1241 connmgr_run(p
->connmgr
, NULL
);
1243 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1244 p
->state
= S_OPENFLOW
;
1249 connmgr_run(p
->connmgr
, NULL
);
1251 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1252 connmgr_flushed(p
->connmgr
);
1253 p
->state
= S_OPENFLOW
;
1261 if (time_msec() >= p
->next_op_report
) {
1262 long long int ago
= (time_msec() - p
->first_op
) / 1000;
1263 long long int interval
= (p
->last_op
- p
->first_op
) / 1000;
1267 ds_put_format(&s
, "%d flow_mods ",
1268 p
->n_add
+ p
->n_delete
+ p
->n_modify
);
1269 if (interval
== ago
) {
1270 ds_put_format(&s
, "in the last %lld s", ago
);
1271 } else if (interval
) {
1272 ds_put_format(&s
, "in the %lld s starting %lld s ago",
1275 ds_put_format(&s
, "%lld s ago", ago
);
1278 ds_put_cstr(&s
, " (");
1280 ds_put_format(&s
, "%d adds, ", p
->n_add
);
1283 ds_put_format(&s
, "%d deletes, ", p
->n_delete
);
1286 ds_put_format(&s
, "%d modifications, ", p
->n_modify
);
1289 ds_put_char(&s
, ')');
1291 VLOG_INFO("%s: %s", p
->name
, ds_cstr(&s
));
1294 p
->n_add
= p
->n_delete
= p
->n_modify
= 0;
1295 p
->next_op_report
= LLONG_MAX
;
1301 /* Performs periodic activity required by 'ofproto' that needs to be done
1302 * with the least possible latency.
1304 * It makes sense to call this function a couple of times per poll loop, to
1305 * provide a significant performance boost on some benchmarks with the
1306 * ofproto-dpif implementation. */
1308 ofproto_run_fast(struct ofproto
*p
)
1312 error
= p
->ofproto_class
->run_fast
? p
->ofproto_class
->run_fast(p
) : 0;
1313 if (error
&& error
!= EAGAIN
) {
1314 VLOG_ERR_RL(&rl
, "%s: fastpath run failed (%s)",
1315 p
->name
, strerror(error
));
1321 ofproto_wait(struct ofproto
*p
)
1323 struct ofport
*ofport
;
1325 p
->ofproto_class
->wait(p
);
1326 if (p
->ofproto_class
->port_poll_wait
) {
1327 p
->ofproto_class
->port_poll_wait(p
);
1330 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1331 if (ofport
->change_seq
!= netdev_change_seq(ofport
->netdev
)) {
1332 poll_immediate_wake();
1338 connmgr_wait(p
->connmgr
, true);
1343 connmgr_wait(p
->connmgr
, false);
1344 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1345 poll_immediate_wake();
1352 ofproto_is_alive(const struct ofproto
*p
)
1354 return connmgr_has_controllers(p
->connmgr
);
1357 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1358 * memory_report(). */
1360 ofproto_get_memory_usage(const struct ofproto
*ofproto
, struct simap
*usage
)
1362 const struct oftable
*table
;
1363 unsigned int n_rules
;
1365 simap_increase(usage
, "ports", hmap_count(&ofproto
->ports
));
1366 simap_increase(usage
, "ops",
1367 ofproto
->n_pending
+ hmap_count(&ofproto
->deletions
));
1370 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1371 n_rules
+= classifier_count(&table
->cls
);
1373 simap_increase(usage
, "rules", n_rules
);
1375 if (ofproto
->ofproto_class
->get_memory_usage
) {
1376 ofproto
->ofproto_class
->get_memory_usage(ofproto
, usage
);
1379 connmgr_get_memory_usage(ofproto
->connmgr
, usage
);
1383 ofproto_get_ofproto_controller_info(const struct ofproto
*ofproto
,
1386 connmgr_get_controller_info(ofproto
->connmgr
, info
);
1390 ofproto_free_ofproto_controller_info(struct shash
*info
)
1392 connmgr_free_controller_info(info
);
1395 /* Makes a deep copy of 'old' into 'port'. */
1397 ofproto_port_clone(struct ofproto_port
*port
, const struct ofproto_port
*old
)
1399 port
->name
= xstrdup(old
->name
);
1400 port
->type
= xstrdup(old
->type
);
1401 port
->ofp_port
= old
->ofp_port
;
1404 /* Frees memory allocated to members of 'ofproto_port'.
1406 * Do not call this function on an ofproto_port obtained from
1407 * ofproto_port_dump_next(): that function retains ownership of the data in the
1410 ofproto_port_destroy(struct ofproto_port
*ofproto_port
)
1412 free(ofproto_port
->name
);
1413 free(ofproto_port
->type
);
1416 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1418 * This function provides no status indication. An error status for the entire
1419 * dump operation is provided when it is completed by calling
1420 * ofproto_port_dump_done().
1423 ofproto_port_dump_start(struct ofproto_port_dump
*dump
,
1424 const struct ofproto
*ofproto
)
1426 dump
->ofproto
= ofproto
;
1427 dump
->error
= ofproto
->ofproto_class
->port_dump_start(ofproto
,
1431 /* Attempts to retrieve another port from 'dump', which must have been created
1432 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1433 * 'port' and returns true. On failure, returns false.
1435 * Failure might indicate an actual error or merely that the last port has been
1436 * dumped. An error status for the entire dump operation is provided when it
1437 * is completed by calling ofproto_port_dump_done().
1439 * The ofproto owns the data stored in 'port'. It will remain valid until at
1440 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1441 * ofproto_port_dump_done(). */
1443 ofproto_port_dump_next(struct ofproto_port_dump
*dump
,
1444 struct ofproto_port
*port
)
1446 const struct ofproto
*ofproto
= dump
->ofproto
;
1452 dump
->error
= ofproto
->ofproto_class
->port_dump_next(ofproto
, dump
->state
,
1455 ofproto
->ofproto_class
->port_dump_done(ofproto
, dump
->state
);
1461 /* Completes port table dump operation 'dump', which must have been created
1462 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1463 * error-free, otherwise a positive errno value describing the problem. */
1465 ofproto_port_dump_done(struct ofproto_port_dump
*dump
)
1467 const struct ofproto
*ofproto
= dump
->ofproto
;
1469 dump
->error
= ofproto
->ofproto_class
->port_dump_done(ofproto
,
1472 return dump
->error
== EOF
? 0 : dump
->error
;
1475 /* Returns the type to pass to netdev_open() when a datapath of type
1476 * 'datapath_type' has a port of type 'port_type', for a few special
1477 * cases when a netdev type differs from a port type. For example, when
1478 * using the userspace datapath, a port of type "internal" needs to be
1481 * Returns either 'type' itself or a string literal, which must not be
1484 ofproto_port_open_type(const char *datapath_type
, const char *port_type
)
1486 const struct ofproto_class
*class;
1488 datapath_type
= ofproto_normalize_type(datapath_type
);
1489 class = ofproto_class_find__(datapath_type
);
1494 return (class->port_open_type
1495 ? class->port_open_type(datapath_type
, port_type
)
1499 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1500 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1501 * the port's OpenFlow port number.
1503 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1504 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1505 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1506 * 'ofp_portp' is non-null). */
1508 ofproto_port_add(struct ofproto
*ofproto
, struct netdev
*netdev
,
1509 ofp_port_t
*ofp_portp
)
1511 ofp_port_t ofp_port
= ofp_portp
? *ofp_portp
: OFPP_NONE
;
1514 error
= ofproto
->ofproto_class
->port_add(ofproto
, netdev
);
1516 const char *netdev_name
= netdev_get_name(netdev
);
1518 simap_put(&ofproto
->ofp_requests
, netdev_name
,
1519 ofp_to_u16(ofp_port
));
1520 update_port(ofproto
, netdev_name
);
1523 struct ofproto_port ofproto_port
;
1525 ofproto_port_query_by_name(ofproto
, netdev_get_name(netdev
),
1527 *ofp_portp
= error
? OFPP_NONE
: ofproto_port
.ofp_port
;
1528 ofproto_port_destroy(&ofproto_port
);
1533 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1534 * initializes '*port' appropriately; on failure, returns a positive errno
1537 * The caller owns the data in 'ofproto_port' and must free it with
1538 * ofproto_port_destroy() when it is no longer needed. */
1540 ofproto_port_query_by_name(const struct ofproto
*ofproto
, const char *devname
,
1541 struct ofproto_port
*port
)
1545 error
= ofproto
->ofproto_class
->port_query_by_name(ofproto
, devname
, port
);
1547 memset(port
, 0, sizeof *port
);
1552 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1553 * Returns 0 if successful, otherwise a positive errno. */
1555 ofproto_port_del(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1557 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1558 const char *name
= ofport
? netdev_get_name(ofport
->netdev
) : "<unknown>";
1559 struct simap_node
*ofp_request_node
;
1562 ofp_request_node
= simap_find(&ofproto
->ofp_requests
, name
);
1563 if (ofp_request_node
) {
1564 simap_delete(&ofproto
->ofp_requests
, ofp_request_node
);
1567 error
= ofproto
->ofproto_class
->port_del(ofproto
, ofp_port
);
1568 if (!error
&& ofport
) {
1569 /* 'name' is the netdev's name and update_port() is going to close the
1570 * netdev. Just in case update_port() refers to 'name' after it
1571 * destroys 'ofport', make a copy of it around the update_port()
1573 char *devname
= xstrdup(name
);
1574 update_port(ofproto
, devname
);
1580 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1581 * performs the 'n_actions' actions in 'actions'. The new flow will not
1584 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1585 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1586 * controllers; otherwise, it will be hidden.
1588 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1590 * This is a helper function for in-band control and fail-open. */
1592 ofproto_add_flow(struct ofproto
*ofproto
, const struct match
*match
,
1593 unsigned int priority
,
1594 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
1596 const struct rule
*rule
;
1598 rule
= rule_from_cls_rule(classifier_find_match_exactly(
1599 &ofproto
->tables
[0].cls
, match
, priority
));
1600 if (!rule
|| !ofpacts_equal(rule
->ofpacts
, rule
->ofpacts_len
,
1601 ofpacts
, ofpacts_len
)) {
1602 struct ofputil_flow_mod fm
;
1604 memset(&fm
, 0, sizeof fm
);
1606 fm
.priority
= priority
;
1607 fm
.buffer_id
= UINT32_MAX
;
1608 fm
.ofpacts
= xmemdup(ofpacts
, ofpacts_len
);
1609 fm
.ofpacts_len
= ofpacts_len
;
1610 add_flow(ofproto
, NULL
, &fm
, NULL
);
1615 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1616 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1617 * operation cannot be initiated now but may be retried later.
1619 * This is a helper function for in-band control and fail-open. */
1621 ofproto_flow_mod(struct ofproto
*ofproto
, const struct ofputil_flow_mod
*fm
)
1623 return handle_flow_mod__(ofproto
, NULL
, fm
, NULL
);
1626 /* Searches for a rule with matching criteria exactly equal to 'target' in
1627 * ofproto's table 0 and, if it finds one, deletes it.
1629 * This is a helper function for in-band control and fail-open. */
1631 ofproto_delete_flow(struct ofproto
*ofproto
,
1632 const struct match
*target
, unsigned int priority
)
1636 rule
= rule_from_cls_rule(classifier_find_match_exactly(
1637 &ofproto
->tables
[0].cls
, target
, priority
));
1639 /* No such rule -> success. */
1641 } else if (rule
->pending
) {
1642 /* An operation on the rule is already pending -> failure.
1643 * Caller must retry later if it's important. */
1646 /* Initiate deletion -> success. */
1647 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
1648 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, OFPRR_DELETE
);
1649 oftable_remove_rule(rule
);
1650 ofproto
->ofproto_class
->rule_destruct(rule
);
1651 ofopgroup_submit(group
);
1657 /* Starts the process of deleting all of the flows from all of ofproto's flow
1658 * tables and then reintroducing the flows required by in-band control and
1659 * fail-open. The process will complete in a later call to ofproto_run(). */
1661 ofproto_flush_flows(struct ofproto
*ofproto
)
1663 COVERAGE_INC(ofproto_flush
);
1664 ofproto
->state
= S_FLUSH
;
1668 reinit_ports(struct ofproto
*p
)
1670 struct ofproto_port_dump dump
;
1671 struct sset devnames
;
1672 struct ofport
*ofport
;
1673 struct ofproto_port ofproto_port
;
1674 const char *devname
;
1676 COVERAGE_INC(ofproto_reinit_ports
);
1678 sset_init(&devnames
);
1679 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1680 sset_add(&devnames
, netdev_get_name(ofport
->netdev
));
1682 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
1683 sset_add(&devnames
, ofproto_port
.name
);
1686 SSET_FOR_EACH (devname
, &devnames
) {
1687 update_port(p
, devname
);
1689 sset_destroy(&devnames
);
1693 alloc_ofp_port(struct ofproto
*ofproto
, const char *netdev_name
)
1695 uint16_t max_ports
= ofp_to_u16(ofproto
->max_ports
);
1698 port_idx
= simap_get(&ofproto
->ofp_requests
, netdev_name
);
1700 port_idx
= UINT16_MAX
;
1703 if (port_idx
>= max_ports
1704 || bitmap_is_set(ofproto
->ofp_port_ids
, port_idx
)) {
1705 uint16_t end_port_no
= ofp_to_u16(ofproto
->alloc_port_no
);
1706 uint16_t alloc_port_no
= end_port_no
;
1708 /* Search for a free OpenFlow port number. We try not to
1709 * immediately reuse them to prevent problems due to old
1712 if (++alloc_port_no
>= max_ports
) {
1715 if (!bitmap_is_set(ofproto
->ofp_port_ids
, alloc_port_no
)) {
1716 port_idx
= alloc_port_no
;
1717 ofproto
->alloc_port_no
= u16_to_ofp(alloc_port_no
);
1720 if (alloc_port_no
== end_port_no
) {
1725 bitmap_set1(ofproto
->ofp_port_ids
, port_idx
);
1726 return u16_to_ofp(port_idx
);
1730 dealloc_ofp_port(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1732 if (ofp_to_u16(ofp_port
) < ofp_to_u16(ofproto
->max_ports
)) {
1733 bitmap_set0(ofproto
->ofp_port_ids
, ofp_to_u16(ofp_port
));
1737 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
1738 * pointer if the netdev cannot be opened. On success, also fills in
1740 static struct netdev
*
1741 ofport_open(struct ofproto
*ofproto
,
1742 struct ofproto_port
*ofproto_port
,
1743 struct ofputil_phy_port
*pp
)
1745 enum netdev_flags flags
;
1746 struct netdev
*netdev
;
1749 error
= netdev_open(ofproto_port
->name
, ofproto_port
->type
, &netdev
);
1751 VLOG_WARN_RL(&rl
, "%s: ignoring port %s (%"PRIu16
") because netdev %s "
1752 "cannot be opened (%s)",
1754 ofproto_port
->name
, ofproto_port
->ofp_port
,
1755 ofproto_port
->name
, strerror(error
));
1759 if (ofproto_port
->ofp_port
== OFPP_NONE
) {
1760 if (!strcmp(ofproto
->name
, ofproto_port
->name
)) {
1761 ofproto_port
->ofp_port
= OFPP_LOCAL
;
1763 ofproto_port
->ofp_port
= alloc_ofp_port(ofproto
,
1764 ofproto_port
->name
);
1767 pp
->port_no
= ofproto_port
->ofp_port
;
1768 netdev_get_etheraddr(netdev
, pp
->hw_addr
);
1769 ovs_strlcpy(pp
->name
, ofproto_port
->name
, sizeof pp
->name
);
1770 netdev_get_flags(netdev
, &flags
);
1771 pp
->config
= flags
& NETDEV_UP
? 0 : OFPUTIL_PC_PORT_DOWN
;
1772 pp
->state
= netdev_get_carrier(netdev
) ? 0 : OFPUTIL_PS_LINK_DOWN
;
1773 netdev_get_features(netdev
, &pp
->curr
, &pp
->advertised
,
1774 &pp
->supported
, &pp
->peer
);
1775 pp
->curr_speed
= netdev_features_to_bps(pp
->curr
, 0);
1776 pp
->max_speed
= netdev_features_to_bps(pp
->supported
, 0);
1781 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
1782 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
1785 ofport_equal(const struct ofputil_phy_port
*a
,
1786 const struct ofputil_phy_port
*b
)
1788 return (eth_addr_equals(a
->hw_addr
, b
->hw_addr
)
1789 && a
->state
== b
->state
1790 && !((a
->config
^ b
->config
) & OFPUTIL_PC_PORT_DOWN
)
1791 && a
->curr
== b
->curr
1792 && a
->advertised
== b
->advertised
1793 && a
->supported
== b
->supported
1794 && a
->peer
== b
->peer
1795 && a
->curr_speed
== b
->curr_speed
1796 && a
->max_speed
== b
->max_speed
);
1799 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
1800 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
1801 * one with the same name or port number). */
1803 ofport_install(struct ofproto
*p
,
1804 struct netdev
*netdev
, const struct ofputil_phy_port
*pp
)
1806 const char *netdev_name
= netdev_get_name(netdev
);
1807 struct ofport
*ofport
;
1810 /* Create ofport. */
1811 ofport
= p
->ofproto_class
->port_alloc();
1816 ofport
->ofproto
= p
;
1817 ofport
->netdev
= netdev
;
1818 ofport
->change_seq
= netdev_change_seq(netdev
);
1820 ofport
->ofp_port
= pp
->port_no
;
1821 ofport
->created
= time_msec();
1823 /* Add port to 'p'. */
1824 hmap_insert(&p
->ports
, &ofport
->hmap_node
,
1825 hash_ofp_port(ofport
->ofp_port
));
1826 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1828 update_mtu(p
, ofport
);
1830 /* Let the ofproto_class initialize its private data. */
1831 error
= p
->ofproto_class
->port_construct(ofport
);
1835 connmgr_send_port_status(p
->connmgr
, pp
, OFPPR_ADD
);
1839 VLOG_WARN_RL(&rl
, "%s: could not add port %s (%s)",
1840 p
->name
, netdev_name
, strerror(error
));
1842 ofport_destroy__(ofport
);
1844 netdev_close(netdev
);
1848 /* Removes 'ofport' from 'p' and destroys it. */
1850 ofport_remove(struct ofport
*ofport
)
1852 connmgr_send_port_status(ofport
->ofproto
->connmgr
, &ofport
->pp
,
1854 ofport_destroy(ofport
);
1857 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
1860 ofport_remove_with_name(struct ofproto
*ofproto
, const char *name
)
1862 struct ofport
*port
= shash_find_data(&ofproto
->port_by_name
, name
);
1864 ofport_remove(port
);
1868 /* Updates 'port' with new 'pp' description.
1870 * Does not handle a name or port number change. The caller must implement
1871 * such a change as a delete followed by an add. */
1873 ofport_modified(struct ofport
*port
, struct ofputil_phy_port
*pp
)
1875 memcpy(port
->pp
.hw_addr
, pp
->hw_addr
, ETH_ADDR_LEN
);
1876 port
->pp
.config
= ((port
->pp
.config
& ~OFPUTIL_PC_PORT_DOWN
)
1877 | (pp
->config
& OFPUTIL_PC_PORT_DOWN
));
1878 port
->pp
.state
= pp
->state
;
1879 port
->pp
.curr
= pp
->curr
;
1880 port
->pp
.advertised
= pp
->advertised
;
1881 port
->pp
.supported
= pp
->supported
;
1882 port
->pp
.peer
= pp
->peer
;
1883 port
->pp
.curr_speed
= pp
->curr_speed
;
1884 port
->pp
.max_speed
= pp
->max_speed
;
1886 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
, OFPPR_MODIFY
);
1889 /* Update OpenFlow 'state' in 'port' and notify controller. */
1891 ofproto_port_set_state(struct ofport
*port
, enum ofputil_port_state state
)
1893 if (port
->pp
.state
!= state
) {
1894 port
->pp
.state
= state
;
1895 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
,
1901 ofproto_port_unregister(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1903 struct ofport
*port
= ofproto_get_port(ofproto
, ofp_port
);
1905 if (port
->ofproto
->ofproto_class
->set_realdev
) {
1906 port
->ofproto
->ofproto_class
->set_realdev(port
, 0, 0);
1908 if (port
->ofproto
->ofproto_class
->set_stp_port
) {
1909 port
->ofproto
->ofproto_class
->set_stp_port(port
, NULL
);
1911 if (port
->ofproto
->ofproto_class
->set_cfm
) {
1912 port
->ofproto
->ofproto_class
->set_cfm(port
, NULL
);
1914 if (port
->ofproto
->ofproto_class
->bundle_remove
) {
1915 port
->ofproto
->ofproto_class
->bundle_remove(port
);
1921 ofport_destroy__(struct ofport
*port
)
1923 struct ofproto
*ofproto
= port
->ofproto
;
1924 const char *name
= netdev_get_name(port
->netdev
);
1926 hmap_remove(&ofproto
->ports
, &port
->hmap_node
);
1927 shash_delete(&ofproto
->port_by_name
,
1928 shash_find(&ofproto
->port_by_name
, name
));
1930 netdev_close(port
->netdev
);
1931 ofproto
->ofproto_class
->port_dealloc(port
);
1935 ofport_destroy(struct ofport
*port
)
1938 dealloc_ofp_port(port
->ofproto
, port
->ofp_port
);
1939 port
->ofproto
->ofproto_class
->port_destruct(port
);
1940 ofport_destroy__(port
);
1945 ofproto_get_port(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1947 struct ofport
*port
;
1949 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
, hash_ofp_port(ofp_port
),
1951 if (port
->ofp_port
== ofp_port
) {
1959 ofproto_port_get_stats(const struct ofport
*port
, struct netdev_stats
*stats
)
1961 struct ofproto
*ofproto
= port
->ofproto
;
1964 if (ofproto
->ofproto_class
->port_get_stats
) {
1965 error
= ofproto
->ofproto_class
->port_get_stats(port
, stats
);
1974 update_port(struct ofproto
*ofproto
, const char *name
)
1976 struct ofproto_port ofproto_port
;
1977 struct ofputil_phy_port pp
;
1978 struct netdev
*netdev
;
1979 struct ofport
*port
;
1981 COVERAGE_INC(ofproto_update_port
);
1983 /* Fetch 'name''s location and properties from the datapath. */
1984 netdev
= (!ofproto_port_query_by_name(ofproto
, name
, &ofproto_port
)
1985 ? ofport_open(ofproto
, &ofproto_port
, &pp
)
1989 port
= ofproto_get_port(ofproto
, ofproto_port
.ofp_port
);
1990 if (port
&& !strcmp(netdev_get_name(port
->netdev
), name
)) {
1991 struct netdev
*old_netdev
= port
->netdev
;
1993 /* 'name' hasn't changed location. Any properties changed? */
1994 if (!ofport_equal(&port
->pp
, &pp
)) {
1995 ofport_modified(port
, &pp
);
1998 update_mtu(ofproto
, port
);
2000 /* Install the newly opened netdev in case it has changed.
2001 * Don't close the old netdev yet in case port_modified has to
2002 * remove a retained reference to it.*/
2003 port
->netdev
= netdev
;
2004 port
->change_seq
= netdev_change_seq(netdev
);
2006 if (port
->ofproto
->ofproto_class
->port_modified
) {
2007 port
->ofproto
->ofproto_class
->port_modified(port
);
2010 netdev_close(old_netdev
);
2012 /* If 'port' is nonnull then its name differs from 'name' and thus
2013 * we should delete it. If we think there's a port named 'name'
2014 * then its port number must be wrong now so delete it too. */
2016 ofport_remove(port
);
2018 ofport_remove_with_name(ofproto
, name
);
2019 ofport_install(ofproto
, netdev
, &pp
);
2022 /* Any port named 'name' is gone now. */
2023 ofport_remove_with_name(ofproto
, name
);
2025 ofproto_port_destroy(&ofproto_port
);
2029 init_ports(struct ofproto
*p
)
2031 struct ofproto_port_dump dump
;
2032 struct ofproto_port ofproto_port
;
2033 struct shash_node
*node
, *next
;
2035 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
2036 const char *name
= ofproto_port
.name
;
2038 if (shash_find(&p
->port_by_name
, name
)) {
2039 VLOG_WARN_RL(&rl
, "%s: ignoring duplicate device %s in datapath",
2042 struct ofputil_phy_port pp
;
2043 struct netdev
*netdev
;
2045 /* Check if an OpenFlow port number had been requested. */
2046 node
= shash_find(&init_ofp_ports
, name
);
2048 const struct iface_hint
*iface_hint
= node
->data
;
2049 simap_put(&p
->ofp_requests
, name
,
2050 ofp_to_u16(iface_hint
->ofp_port
));
2053 netdev
= ofport_open(p
, &ofproto_port
, &pp
);
2055 ofport_install(p
, netdev
, &pp
);
2060 SHASH_FOR_EACH_SAFE(node
, next
, &init_ofp_ports
) {
2061 struct iface_hint
*iface_hint
= node
->data
;
2063 if (!strcmp(iface_hint
->br_name
, p
->name
)) {
2064 free(iface_hint
->br_name
);
2065 free(iface_hint
->br_type
);
2067 shash_delete(&init_ofp_ports
, node
);
2074 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2075 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2077 find_min_mtu(struct ofproto
*p
)
2079 struct ofport
*ofport
;
2082 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2083 struct netdev
*netdev
= ofport
->netdev
;
2086 /* Skip any internal ports, since that's what we're trying to
2088 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2092 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2095 if (!mtu
|| dev_mtu
< mtu
) {
2100 return mtu
? mtu
: ETH_PAYLOAD_MAX
;
2103 /* Update MTU of all datapath devices on 'p' to the minimum of the
2104 * non-datapath ports in event of 'port' added or changed. */
2106 update_mtu(struct ofproto
*p
, struct ofport
*port
)
2108 struct ofport
*ofport
;
2109 struct netdev
*netdev
= port
->netdev
;
2110 int dev_mtu
, old_min
;
2112 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2116 if (!strcmp(netdev_get_type(port
->netdev
), "internal")) {
2117 if (dev_mtu
> p
->min_mtu
) {
2118 if (!netdev_set_mtu(port
->netdev
, p
->min_mtu
)) {
2119 dev_mtu
= p
->min_mtu
;
2122 port
->mtu
= dev_mtu
;
2126 /* For non-internal port find new min mtu. */
2127 old_min
= p
->min_mtu
;
2128 port
->mtu
= dev_mtu
;
2129 p
->min_mtu
= find_min_mtu(p
);
2130 if (p
->min_mtu
== old_min
) {
2134 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2135 struct netdev
*netdev
= ofport
->netdev
;
2137 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2138 if (!netdev_set_mtu(netdev
, p
->min_mtu
)) {
2139 ofport
->mtu
= p
->min_mtu
;
2146 ofproto_rule_destroy__(struct rule
*rule
)
2149 cls_rule_destroy(&rule
->cr
);
2150 free(rule
->ofpacts
);
2151 rule
->ofproto
->ofproto_class
->rule_dealloc(rule
);
2155 /* This function allows an ofproto implementation to destroy any rules that
2156 * remain when its ->destruct() function is called. The caller must have
2157 * already uninitialized any derived members of 'rule' (step 5 described in the
2158 * large comment in ofproto/ofproto-provider.h titled "Life Cycle").
2159 * This function implements steps 6 and 7.
2161 * This function should only be called from an ofproto implementation's
2162 * ->destruct() function. It is not suitable elsewhere. */
2164 ofproto_rule_destroy(struct rule
*rule
)
2166 ovs_assert(!rule
->pending
);
2167 oftable_remove_rule(rule
);
2168 ofproto_rule_destroy__(rule
);
2171 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2172 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2174 ofproto_rule_has_out_port(const struct rule
*rule
, ofp_port_t port
)
2176 return (port
== OFPP_ANY
2177 || ofpacts_output_to_port(rule
->ofpacts
, rule
->ofpacts_len
, port
));
2180 /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
2181 * OFPAT_ENQUEUE action that outputs to 'out_port'. */
2183 ofoperation_has_out_port(const struct ofoperation
*op
, ofp_port_t out_port
)
2185 if (ofproto_rule_has_out_port(op
->rule
, out_port
)) {
2190 case OFOPERATION_ADD
:
2191 return op
->victim
&& ofproto_rule_has_out_port(op
->victim
, out_port
);
2193 case OFOPERATION_DELETE
:
2196 case OFOPERATION_MODIFY
:
2197 return ofpacts_output_to_port(op
->ofpacts
, op
->ofpacts_len
, out_port
);
2203 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
2204 * statistics appropriately. 'packet' must have at least sizeof(struct
2205 * ofp10_packet_in) bytes of headroom.
2207 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
2208 * with statistics for 'packet' either way.
2210 * Takes ownership of 'packet'. */
2212 rule_execute(struct rule
*rule
, ofp_port_t in_port
, struct ofpbuf
*packet
)
2215 union flow_in_port in_port_
;
2217 ovs_assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp10_packet_in
));
2219 in_port_
.ofp_port
= in_port
;
2220 flow_extract(packet
, 0, 0, NULL
, &in_port_
, &flow
);
2221 return rule
->ofproto
->ofproto_class
->rule_execute(rule
, &flow
, packet
);
2224 /* Returns true if 'rule' should be hidden from the controller.
2226 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
2227 * (e.g. by in-band control) and are intentionally hidden from the
2230 ofproto_rule_is_hidden(const struct rule
*rule
)
2232 return rule
->cr
.priority
> UINT16_MAX
;
2235 static enum oftable_flags
2236 rule_get_flags(const struct rule
*rule
)
2238 return rule
->ofproto
->tables
[rule
->table_id
].flags
;
2242 rule_is_modifiable(const struct rule
*rule
)
2244 return !(rule_get_flags(rule
) & OFTABLE_READONLY
);
2248 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2250 ofconn_send_reply(ofconn
, make_echo_reply(oh
));
2255 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2257 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2258 struct ofputil_switch_features features
;
2259 struct ofport
*port
;
2265 ofproto
->ofproto_class
->get_features(ofproto
, &arp_match_ip
,
2267 ovs_assert(features
.actions
& OFPUTIL_A_OUTPUT
); /* sanity check */
2269 /* Count only non-hidden tables in the number of tables. (Hidden tables,
2270 * if present, are always at the end.) */
2271 n_tables
= ofproto
->n_tables
;
2272 for (i
= 0; i
< ofproto
->n_tables
; i
++) {
2273 if (ofproto
->tables
[i
].flags
& OFTABLE_HIDDEN
) {
2279 features
.datapath_id
= ofproto
->datapath_id
;
2280 features
.n_buffers
= pktbuf_capacity();
2281 features
.n_tables
= n_tables
;
2282 features
.capabilities
= (OFPUTIL_C_FLOW_STATS
| OFPUTIL_C_TABLE_STATS
|
2283 OFPUTIL_C_PORT_STATS
| OFPUTIL_C_QUEUE_STATS
);
2285 features
.capabilities
|= OFPUTIL_C_ARP_MATCH_IP
;
2287 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
2288 features
.auxiliary_id
= 0;
2289 b
= ofputil_encode_switch_features(&features
, ofconn_get_protocol(ofconn
),
2291 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
2292 ofputil_put_switch_features_port(&port
->pp
, b
);
2295 ofconn_send_reply(ofconn
, b
);
2300 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2302 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2303 struct ofp_switch_config
*osc
;
2304 enum ofp_config_flags flags
;
2308 buf
= ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY
, oh
, 0);
2309 osc
= ofpbuf_put_uninit(buf
, sizeof *osc
);
2310 flags
= ofproto
->frag_handling
;
2311 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2312 if (oh
->version
< OFP13_VERSION
2313 && ofconn_get_invalid_ttl_to_controller(ofconn
)) {
2314 flags
|= OFPC_INVALID_TTL_TO_CONTROLLER
;
2316 osc
->flags
= htons(flags
);
2317 osc
->miss_send_len
= htons(ofconn_get_miss_send_len(ofconn
));
2318 ofconn_send_reply(ofconn
, buf
);
2324 handle_set_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2326 const struct ofp_switch_config
*osc
= ofpmsg_body(oh
);
2327 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2328 uint16_t flags
= ntohs(osc
->flags
);
2330 if (ofconn_get_type(ofconn
) != OFCONN_PRIMARY
2331 || ofconn_get_role(ofconn
) != OFPCR12_ROLE_SLAVE
) {
2332 enum ofp_config_flags cur
= ofproto
->frag_handling
;
2333 enum ofp_config_flags next
= flags
& OFPC_FRAG_MASK
;
2335 ovs_assert((cur
& OFPC_FRAG_MASK
) == cur
);
2337 if (ofproto
->ofproto_class
->set_frag_handling(ofproto
, next
)) {
2338 ofproto
->frag_handling
= next
;
2340 VLOG_WARN_RL(&rl
, "%s: unsupported fragment handling mode %s",
2342 ofputil_frag_handling_to_string(next
));
2346 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2347 ofconn_set_invalid_ttl_to_controller(ofconn
,
2348 (oh
->version
< OFP13_VERSION
2349 && flags
& OFPC_INVALID_TTL_TO_CONTROLLER
));
2351 ofconn_set_miss_send_len(ofconn
, ntohs(osc
->miss_send_len
));
2356 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2357 * error message code for the caller to propagate upward. Otherwise, returns
2360 * The log message mentions 'msg_type'. */
2362 reject_slave_controller(struct ofconn
*ofconn
)
2364 if (ofconn_get_type(ofconn
) == OFCONN_PRIMARY
2365 && ofconn_get_role(ofconn
) == OFPCR12_ROLE_SLAVE
) {
2366 return OFPERR_OFPBRC_EPERM
;
2373 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2375 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2376 struct ofputil_packet_out po
;
2377 struct ofpbuf
*payload
;
2378 uint64_t ofpacts_stub
[1024 / 8];
2379 struct ofpbuf ofpacts
;
2381 union flow_in_port in_port_
;
2384 COVERAGE_INC(ofproto_packet_out
);
2386 error
= reject_slave_controller(ofconn
);
2391 /* Decode message. */
2392 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
2393 error
= ofputil_decode_packet_out(&po
, oh
, &ofpacts
);
2395 goto exit_free_ofpacts
;
2397 if (ofp_to_u16(po
.in_port
) >= ofp_to_u16(p
->max_ports
)
2398 && ofp_to_u16(po
.in_port
) < ofp_to_u16(OFPP_MAX
)) {
2399 error
= OFPERR_OFPBRC_BAD_PORT
;
2400 goto exit_free_ofpacts
;
2405 if (po
.buffer_id
!= UINT32_MAX
) {
2406 error
= ofconn_pktbuf_retrieve(ofconn
, po
.buffer_id
, &payload
, NULL
);
2407 if (error
|| !payload
) {
2408 goto exit_free_ofpacts
;
2411 payload
= xmalloc(sizeof *payload
);
2412 ofpbuf_use_const(payload
, po
.packet
, po
.packet_len
);
2415 /* Verify actions against packet, then send packet if successful. */
2416 in_port_
.ofp_port
= po
.in_port
;
2417 flow_extract(payload
, 0, 0, NULL
, &in_port_
, &flow
);
2418 error
= ofpacts_check(po
.ofpacts
, po
.ofpacts_len
, &flow
, p
->max_ports
);
2420 error
= p
->ofproto_class
->packet_out(p
, payload
, &flow
,
2421 po
.ofpacts
, po
.ofpacts_len
);
2423 ofpbuf_delete(payload
);
2426 ofpbuf_uninit(&ofpacts
);
2432 update_port_config(struct ofport
*port
,
2433 enum ofputil_port_config config
,
2434 enum ofputil_port_config mask
)
2436 enum ofputil_port_config old_config
= port
->pp
.config
;
2437 enum ofputil_port_config toggle
;
2439 toggle
= (config
^ port
->pp
.config
) & mask
;
2440 if (toggle
& OFPUTIL_PC_PORT_DOWN
) {
2441 if (config
& OFPUTIL_PC_PORT_DOWN
) {
2442 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, NULL
);
2444 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, NULL
);
2446 toggle
&= ~OFPUTIL_PC_PORT_DOWN
;
2449 port
->pp
.config
^= toggle
;
2450 if (port
->pp
.config
!= old_config
) {
2451 port
->ofproto
->ofproto_class
->port_reconfigured(port
, old_config
);
2456 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2458 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2459 struct ofputil_port_mod pm
;
2460 struct ofport
*port
;
2463 error
= reject_slave_controller(ofconn
);
2468 error
= ofputil_decode_port_mod(oh
, &pm
);
2473 port
= ofproto_get_port(p
, pm
.port_no
);
2475 return OFPERR_OFPPMFC_BAD_PORT
;
2476 } else if (!eth_addr_equals(port
->pp
.hw_addr
, pm
.hw_addr
)) {
2477 return OFPERR_OFPPMFC_BAD_HW_ADDR
;
2479 update_port_config(port
, pm
.config
, pm
.mask
);
2481 netdev_set_advertisements(port
->netdev
, pm
.advertise
);
2488 handle_desc_stats_request(struct ofconn
*ofconn
,
2489 const struct ofp_header
*request
)
2491 static const char *default_mfr_desc
= "Nicira, Inc.";
2492 static const char *default_hw_desc
= "Open vSwitch";
2493 static const char *default_sw_desc
= VERSION
;
2494 static const char *default_serial_desc
= "None";
2495 static const char *default_dp_desc
= "None";
2497 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2498 struct ofp_desc_stats
*ods
;
2501 msg
= ofpraw_alloc_stats_reply(request
, 0);
2502 ods
= ofpbuf_put_zeros(msg
, sizeof *ods
);
2503 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
? p
->mfr_desc
: default_mfr_desc
,
2504 sizeof ods
->mfr_desc
);
2505 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
? p
->hw_desc
: default_hw_desc
,
2506 sizeof ods
->hw_desc
);
2507 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
? p
->sw_desc
: default_sw_desc
,
2508 sizeof ods
->sw_desc
);
2509 ovs_strlcpy(ods
->serial_num
,
2510 p
->serial_desc
? p
->serial_desc
: default_serial_desc
,
2511 sizeof ods
->serial_num
);
2512 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
? p
->dp_desc
: default_dp_desc
,
2513 sizeof ods
->dp_desc
);
2514 ofconn_send_reply(ofconn
, msg
);
2520 handle_table_stats_request(struct ofconn
*ofconn
,
2521 const struct ofp_header
*request
)
2523 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2524 struct ofp12_table_stats
*ots
;
2529 /* Set up default values.
2531 * ofp12_table_stats is used as a generic structure as
2532 * it is able to hold all the fields for ofp10_table_stats
2533 * and ofp11_table_stats (and of course itself).
2535 ots
= xcalloc(p
->n_tables
, sizeof *ots
);
2536 for (i
= 0; i
< p
->n_tables
; i
++) {
2537 ots
[i
].table_id
= i
;
2538 sprintf(ots
[i
].name
, "table%zu", i
);
2539 ots
[i
].match
= htonll(OFPXMT12_MASK
);
2540 ots
[i
].wildcards
= htonll(OFPXMT12_MASK
);
2541 ots
[i
].write_actions
= htonl(OFPAT11_OUTPUT
);
2542 ots
[i
].apply_actions
= htonl(OFPAT11_OUTPUT
);
2543 ots
[i
].write_setfields
= htonll(OFPXMT12_MASK
);
2544 ots
[i
].apply_setfields
= htonll(OFPXMT12_MASK
);
2545 ots
[i
].metadata_match
= htonll(UINT64_MAX
);
2546 ots
[i
].metadata_write
= htonll(UINT64_MAX
);
2547 ots
[i
].instructions
= htonl(OFPIT11_ALL
);
2548 ots
[i
].config
= htonl(OFPTC11_TABLE_MISS_MASK
);
2549 ots
[i
].max_entries
= htonl(1000000); /* An arbitrary big number. */
2550 ots
[i
].active_count
= htonl(classifier_count(&p
->tables
[i
].cls
));
2553 p
->ofproto_class
->get_tables(p
, ots
);
2555 /* Post-process the tables, dropping hidden tables. */
2556 n_tables
= p
->n_tables
;
2557 for (i
= 0; i
< p
->n_tables
; i
++) {
2558 const struct oftable
*table
= &p
->tables
[i
];
2560 if (table
->flags
& OFTABLE_HIDDEN
) {
2566 ovs_strzcpy(ots
[i
].name
, table
->name
, sizeof ots
[i
].name
);
2569 if (table
->max_flows
< ntohl(ots
[i
].max_entries
)) {
2570 ots
[i
].max_entries
= htonl(table
->max_flows
);
2574 msg
= ofputil_encode_table_stats_reply(ots
, n_tables
, request
);
2575 ofconn_send_reply(ofconn
, msg
);
2583 append_port_stat(struct ofport
*port
, struct list
*replies
)
2585 struct ofputil_port_stats ops
= { .port_no
= port
->pp
.port_no
};
2587 calc_duration(port
->created
, time_msec(),
2588 &ops
.duration_sec
, &ops
.duration_nsec
);
2590 /* Intentionally ignore return value, since errors will set
2591 * 'stats' to all-1s, which is correct for OpenFlow, and
2592 * netdev_get_stats() will log errors. */
2593 ofproto_port_get_stats(port
, &ops
.stats
);
2595 ofputil_append_port_stat(replies
, &ops
);
2599 handle_port_stats_request(struct ofconn
*ofconn
,
2600 const struct ofp_header
*request
)
2602 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2603 struct ofport
*port
;
2604 struct list replies
;
2608 error
= ofputil_decode_port_stats_request(request
, &port_no
);
2613 ofpmp_init(&replies
, request
);
2614 if (port_no
!= OFPP_ANY
) {
2615 port
= ofproto_get_port(p
, port_no
);
2617 append_port_stat(port
, &replies
);
2620 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2621 append_port_stat(port
, &replies
);
2625 ofconn_send_replies(ofconn
, &replies
);
2630 handle_port_desc_stats_request(struct ofconn
*ofconn
,
2631 const struct ofp_header
*request
)
2633 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2634 enum ofp_version version
;
2635 struct ofport
*port
;
2636 struct list replies
;
2638 ofpmp_init(&replies
, request
);
2640 version
= ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn
));
2641 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2642 ofputil_append_port_desc_stats_reply(version
, &port
->pp
, &replies
);
2645 ofconn_send_replies(ofconn
, &replies
);
2650 hash_cookie(ovs_be64 cookie
)
2652 return hash_2words((OVS_FORCE
uint64_t)cookie
>> 32,
2653 (OVS_FORCE
uint64_t)cookie
);
2657 cookies_insert(struct ofproto
*ofproto
, struct rule
*rule
)
2659 hindex_insert(&ofproto
->cookies
, &rule
->cookie_node
,
2660 hash_cookie(rule
->flow_cookie
));
2664 cookies_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2666 hindex_remove(&ofproto
->cookies
, &rule
->cookie_node
);
2670 ofproto_rule_change_cookie(struct ofproto
*ofproto
, struct rule
*rule
,
2671 ovs_be64 new_cookie
)
2673 if (new_cookie
!= rule
->flow_cookie
) {
2674 cookies_remove(ofproto
, rule
);
2676 rule
->flow_cookie
= new_cookie
;
2678 cookies_insert(ofproto
, rule
);
2683 calc_duration(long long int start
, long long int now
,
2684 uint32_t *sec
, uint32_t *nsec
)
2686 long long int msecs
= now
- start
;
2687 *sec
= msecs
/ 1000;
2688 *nsec
= (msecs
% 1000) * (1000 * 1000);
2691 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
2692 * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */
2694 check_table_id(const struct ofproto
*ofproto
, uint8_t table_id
)
2696 return (table_id
== 0xff || table_id
< ofproto
->n_tables
2698 : OFPERR_OFPBRC_BAD_TABLE_ID
);
2702 static struct oftable
*
2703 next_visible_table(const struct ofproto
*ofproto
, uint8_t table_id
)
2705 struct oftable
*table
;
2707 for (table
= &ofproto
->tables
[table_id
];
2708 table
< &ofproto
->tables
[ofproto
->n_tables
];
2710 if (!(table
->flags
& OFTABLE_HIDDEN
)) {
2718 static struct oftable
*
2719 first_matching_table(const struct ofproto
*ofproto
, uint8_t table_id
)
2721 if (table_id
== 0xff) {
2722 return next_visible_table(ofproto
, 0);
2723 } else if (table_id
< ofproto
->n_tables
) {
2724 return &ofproto
->tables
[table_id
];
2730 static struct oftable
*
2731 next_matching_table(const struct ofproto
*ofproto
,
2732 const struct oftable
*table
, uint8_t table_id
)
2734 return (table_id
== 0xff
2735 ? next_visible_table(ofproto
, (table
- ofproto
->tables
) + 1)
2739 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
2741 * - If TABLE_ID is 0xff, this iterates over every classifier table in
2742 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
2744 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
2745 * only once, for that table. (This can be used to access tables marked
2748 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
2749 * entered at all. (Perhaps you should have validated TABLE_ID with
2750 * check_table_id().)
2752 * All parameters are evaluated multiple times.
2754 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
2755 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
2757 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
2759 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2760 * 'table_id' is 0xff) that match 'match' in the "loose" way required for
2761 * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list
2764 * If 'out_port' is anything other than OFPP_ANY, then only rules that output
2765 * to 'out_port' are included.
2767 * Hidden rules are always omitted.
2769 * Returns 0 on success, otherwise an OpenFlow error code. */
2771 collect_rules_loose(struct ofproto
*ofproto
, uint8_t table_id
,
2772 const struct match
*match
,
2773 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2774 ofp_port_t out_port
, struct list
*rules
)
2776 struct oftable
*table
;
2780 error
= check_table_id(ofproto
, table_id
);
2786 cls_rule_init(&cr
, match
, 0);
2788 if (cookie_mask
== htonll(UINT64_MAX
)) {
2791 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
, hash_cookie(cookie
),
2792 &ofproto
->cookies
) {
2793 if (table_id
!= rule
->table_id
&& table_id
!= 0xff) {
2796 if (ofproto_rule_is_hidden(rule
)) {
2799 if (cls_rule_is_loose_match(&rule
->cr
, &cr
.match
)) {
2800 if (rule
->pending
) {
2801 error
= OFPROTO_POSTPONE
;
2804 if (rule
->flow_cookie
== cookie
/* Hash collisions possible. */
2805 && ofproto_rule_has_out_port(rule
, out_port
)) {
2806 list_push_back(rules
, &rule
->ofproto_node
);
2813 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2814 struct cls_cursor cursor
;
2817 cls_cursor_init(&cursor
, &table
->cls
, &cr
);
2818 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
2819 if (rule
->pending
) {
2820 error
= OFPROTO_POSTPONE
;
2823 if (!ofproto_rule_is_hidden(rule
)
2824 && ofproto_rule_has_out_port(rule
, out_port
)
2825 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2826 list_push_back(rules
, &rule
->ofproto_node
);
2832 cls_rule_destroy(&cr
);
2836 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2837 * 'table_id' is 0xff) that match 'match' in the "strict" way required for
2838 * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them
2841 * If 'out_port' is anything other than OFPP_ANY, then only rules that output
2842 * to 'out_port' are included.
2844 * Hidden rules are always omitted.
2846 * Returns 0 on success, otherwise an OpenFlow error code. */
2848 collect_rules_strict(struct ofproto
*ofproto
, uint8_t table_id
,
2849 const struct match
*match
, unsigned int priority
,
2850 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2851 ofp_port_t out_port
, struct list
*rules
)
2853 struct oftable
*table
;
2857 error
= check_table_id(ofproto
, table_id
);
2863 cls_rule_init(&cr
, match
, priority
);
2865 if (cookie_mask
== htonll(UINT64_MAX
)) {
2868 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
, hash_cookie(cookie
),
2869 &ofproto
->cookies
) {
2870 if (table_id
!= rule
->table_id
&& table_id
!= 0xff) {
2873 if (ofproto_rule_is_hidden(rule
)) {
2876 if (cls_rule_equal(&rule
->cr
, &cr
)) {
2877 if (rule
->pending
) {
2878 error
= OFPROTO_POSTPONE
;
2881 if (rule
->flow_cookie
== cookie
/* Hash collisions possible. */
2882 && ofproto_rule_has_out_port(rule
, out_port
)) {
2883 list_push_back(rules
, &rule
->ofproto_node
);
2890 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2893 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
,
2896 if (rule
->pending
) {
2897 error
= OFPROTO_POSTPONE
;
2900 if (!ofproto_rule_is_hidden(rule
)
2901 && ofproto_rule_has_out_port(rule
, out_port
)
2902 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2903 list_push_back(rules
, &rule
->ofproto_node
);
2909 cls_rule_destroy(&cr
);
2913 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
2914 * forced into the range of a uint16_t. */
2916 age_secs(long long int age_ms
)
2918 return (age_ms
< 0 ? 0
2919 : age_ms
>= UINT16_MAX
* 1000 ? UINT16_MAX
2920 : (unsigned int) age_ms
/ 1000);
2924 handle_flow_stats_request(struct ofconn
*ofconn
,
2925 const struct ofp_header
*request
)
2927 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2928 struct ofputil_flow_stats_request fsr
;
2929 struct list replies
;
2934 error
= ofputil_decode_flow_stats_request(&fsr
, request
);
2939 error
= collect_rules_loose(ofproto
, fsr
.table_id
, &fsr
.match
,
2940 fsr
.cookie
, fsr
.cookie_mask
,
2941 fsr
.out_port
, &rules
);
2946 ofpmp_init(&replies
, request
);
2947 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
2948 long long int now
= time_msec();
2949 struct ofputil_flow_stats fs
;
2951 minimatch_expand(&rule
->cr
.match
, &fs
.match
);
2952 fs
.priority
= rule
->cr
.priority
;
2953 fs
.cookie
= rule
->flow_cookie
;
2954 fs
.table_id
= rule
->table_id
;
2955 calc_duration(rule
->created
, now
, &fs
.duration_sec
, &fs
.duration_nsec
);
2956 fs
.idle_timeout
= rule
->idle_timeout
;
2957 fs
.hard_timeout
= rule
->hard_timeout
;
2958 fs
.idle_age
= age_secs(now
- rule
->used
);
2959 fs
.hard_age
= age_secs(now
- rule
->modified
);
2960 ofproto
->ofproto_class
->rule_get_stats(rule
, &fs
.packet_count
,
2962 fs
.ofpacts
= rule
->ofpacts
;
2963 fs
.ofpacts_len
= rule
->ofpacts_len
;
2965 if (rule
->send_flow_removed
) {
2966 fs
.flags
|= OFPFF_SEND_FLOW_REM
;
2967 /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
2968 and OFPFF13_NO_BYT_COUNTS */
2970 ofputil_append_flow_stats_reply(&fs
, &replies
);
2972 ofconn_send_replies(ofconn
, &replies
);
2978 flow_stats_ds(struct rule
*rule
, struct ds
*results
)
2980 uint64_t packet_count
, byte_count
;
2982 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
,
2983 &packet_count
, &byte_count
);
2985 if (rule
->table_id
!= 0) {
2986 ds_put_format(results
, "table_id=%"PRIu8
", ", rule
->table_id
);
2988 ds_put_format(results
, "duration=%llds, ",
2989 (time_msec() - rule
->created
) / 1000);
2990 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2991 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2992 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2993 cls_rule_format(&rule
->cr
, results
);
2994 ds_put_char(results
, ',');
2995 ofpacts_format(rule
->ofpacts
, rule
->ofpacts_len
, results
);
2996 ds_put_cstr(results
, "\n");
2999 /* Adds a pretty-printed description of all flows to 'results', including
3000 * hidden flows (e.g., set up by in-band control). */
3002 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3004 struct oftable
*table
;
3006 OFPROTO_FOR_EACH_TABLE (table
, p
) {
3007 struct cls_cursor cursor
;
3010 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
3011 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3012 flow_stats_ds(rule
, results
);
3017 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3018 * '*engine_type' and '*engine_id', respectively. */
3020 ofproto_get_netflow_ids(const struct ofproto
*ofproto
,
3021 uint8_t *engine_type
, uint8_t *engine_id
)
3023 ofproto
->ofproto_class
->get_netflow_ids(ofproto
, engine_type
, engine_id
);
3026 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns
3027 * true if the port's CFM status was successfully stored into '*status'.
3028 * Returns false if the port did not have CFM configured, in which case
3029 * '*status' is indeterminate.
3031 * The caller must provide and owns '*status', but it does not own and must not
3032 * modify or free the array returned in 'status->rmps'. */
3034 ofproto_port_get_cfm_status(const struct ofproto
*ofproto
, ofp_port_t ofp_port
,
3035 struct ofproto_cfm_status
*status
)
3037 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
3039 && ofproto
->ofproto_class
->get_cfm_status
3040 && ofproto
->ofproto_class
->get_cfm_status(ofport
, status
));
3044 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3045 const struct ofp_header
*oh
)
3047 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3048 struct ofputil_flow_stats_request request
;
3049 struct ofputil_aggregate_stats stats
;
3050 bool unknown_packets
, unknown_bytes
;
3051 struct ofpbuf
*reply
;
3056 error
= ofputil_decode_flow_stats_request(&request
, oh
);
3061 error
= collect_rules_loose(ofproto
, request
.table_id
, &request
.match
,
3062 request
.cookie
, request
.cookie_mask
,
3063 request
.out_port
, &rules
);
3068 memset(&stats
, 0, sizeof stats
);
3069 unknown_packets
= unknown_bytes
= false;
3070 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
3071 uint64_t packet_count
;
3072 uint64_t byte_count
;
3074 ofproto
->ofproto_class
->rule_get_stats(rule
, &packet_count
,
3077 if (packet_count
== UINT64_MAX
) {
3078 unknown_packets
= true;
3080 stats
.packet_count
+= packet_count
;
3083 if (byte_count
== UINT64_MAX
) {
3084 unknown_bytes
= true;
3086 stats
.byte_count
+= byte_count
;
3091 if (unknown_packets
) {
3092 stats
.packet_count
= UINT64_MAX
;
3094 if (unknown_bytes
) {
3095 stats
.byte_count
= UINT64_MAX
;
3098 reply
= ofputil_encode_aggregate_stats_reply(&stats
, oh
);
3099 ofconn_send_reply(ofconn
, reply
);
3104 struct queue_stats_cbdata
{
3105 struct ofport
*ofport
;
3106 struct list replies
;
3110 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3111 const struct netdev_queue_stats
*stats
)
3114 struct ofputil_queue_stats oqs
= {
3115 .port_no
= cbdata
->ofport
->pp
.port_no
,
3116 .queue_id
= queue_id
,
3119 ofputil_append_queue_stat(&cbdata
->replies
, &oqs
);
3123 handle_queue_stats_dump_cb(uint32_t queue_id
,
3124 struct netdev_queue_stats
*stats
,
3127 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3129 put_queue_stats(cbdata
, queue_id
, stats
);
3133 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3134 struct queue_stats_cbdata
*cbdata
)
3136 cbdata
->ofport
= port
;
3137 if (queue_id
== OFPQ_ALL
) {
3138 netdev_dump_queue_stats(port
->netdev
,
3139 handle_queue_stats_dump_cb
, cbdata
);
3141 struct netdev_queue_stats stats
;
3143 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3144 put_queue_stats(cbdata
, queue_id
, &stats
);
3146 return OFPERR_OFPQOFC_BAD_QUEUE
;
3153 handle_queue_stats_request(struct ofconn
*ofconn
,
3154 const struct ofp_header
*rq
)
3156 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3157 struct queue_stats_cbdata cbdata
;
3158 struct ofport
*port
;
3160 struct ofputil_queue_stats_request oqsr
;
3162 COVERAGE_INC(ofproto_queue_req
);
3164 ofpmp_init(&cbdata
.replies
, rq
);
3166 error
= ofputil_decode_queue_stats_request(rq
, &oqsr
);
3171 if (oqsr
.port_no
== OFPP_ANY
) {
3172 error
= OFPERR_OFPQOFC_BAD_QUEUE
;
3173 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3174 if (!handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)) {
3179 port
= ofproto_get_port(ofproto
, oqsr
.port_no
);
3181 ? handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)
3182 : OFPERR_OFPQOFC_BAD_PORT
);
3185 ofconn_send_replies(ofconn
, &cbdata
.replies
);
3187 ofpbuf_list_delete(&cbdata
.replies
);
3194 is_flow_deletion_pending(const struct ofproto
*ofproto
,
3195 const struct cls_rule
*cls_rule
,
3198 if (!hmap_is_empty(&ofproto
->deletions
)) {
3199 struct ofoperation
*op
;
3201 HMAP_FOR_EACH_WITH_HASH (op
, hmap_node
,
3202 cls_rule_hash(cls_rule
, table_id
),
3203 &ofproto
->deletions
) {
3204 if (cls_rule_equal(cls_rule
, &op
->rule
->cr
)) {
3213 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3214 * in which no matching flow already exists in the flow table.
3216 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3217 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
3218 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
3219 * initiated now but may be retried later.
3221 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
3222 * ownership remains with the caller.
3224 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3227 add_flow(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3228 const struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
)
3230 struct oftable
*table
;
3231 struct ofopgroup
*group
;
3232 struct rule
*victim
;
3237 error
= check_table_id(ofproto
, fm
->table_id
);
3243 if (fm
->table_id
== 0xff) {
3244 if (ofproto
->ofproto_class
->rule_choose_table
) {
3245 error
= ofproto
->ofproto_class
->rule_choose_table(ofproto
,
3251 ovs_assert(table_id
< ofproto
->n_tables
);
3255 } else if (fm
->table_id
< ofproto
->n_tables
) {
3256 table_id
= fm
->table_id
;
3258 return OFPERR_OFPBRC_BAD_TABLE_ID
;
3261 table
= &ofproto
->tables
[table_id
];
3263 if (table
->flags
& OFTABLE_READONLY
) {
3264 return OFPERR_OFPBRC_EPERM
;
3267 /* Allocate new rule and initialize classifier rule. */
3268 rule
= ofproto
->ofproto_class
->rule_alloc();
3270 VLOG_WARN_RL(&rl
, "%s: failed to create rule (%s)",
3271 ofproto
->name
, strerror(error
));
3274 cls_rule_init(&rule
->cr
, &fm
->match
, fm
->priority
);
3276 /* Serialize against pending deletion. */
3277 if (is_flow_deletion_pending(ofproto
, &rule
->cr
, table_id
)) {
3278 cls_rule_destroy(&rule
->cr
);
3279 ofproto
->ofproto_class
->rule_dealloc(rule
);
3280 return OFPROTO_POSTPONE
;
3283 /* Check for overlap, if requested. */
3284 if (fm
->flags
& OFPFF_CHECK_OVERLAP
3285 && classifier_rule_overlaps(&table
->cls
, &rule
->cr
)) {
3286 cls_rule_destroy(&rule
->cr
);
3287 ofproto
->ofproto_class
->rule_dealloc(rule
);
3288 return OFPERR_OFPFMFC_OVERLAP
;
3291 /* FIXME: Implement OFPFF12_RESET_COUNTS */
3293 rule
->ofproto
= ofproto
;
3294 rule
->pending
= NULL
;
3295 rule
->flow_cookie
= fm
->new_cookie
;
3296 rule
->created
= rule
->modified
= rule
->used
= time_msec();
3297 rule
->idle_timeout
= fm
->idle_timeout
;
3298 rule
->hard_timeout
= fm
->hard_timeout
;
3299 rule
->table_id
= table
- ofproto
->tables
;
3300 rule
->send_flow_removed
= (fm
->flags
& OFPFF_SEND_FLOW_REM
) != 0;
3301 /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
3302 and OFPFF13_NO_BYT_COUNTS */
3303 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
3304 rule
->ofpacts_len
= fm
->ofpacts_len
;
3305 rule
->evictable
= true;
3306 rule
->eviction_group
= NULL
;
3307 list_init(&rule
->expirable
);
3308 rule
->monitor_flags
= 0;
3309 rule
->add_seqno
= 0;
3310 rule
->modify_seqno
= 0;
3312 /* Insert new rule. */
3313 victim
= oftable_replace_rule(rule
);
3314 if (victim
&& !rule_is_modifiable(victim
)) {
3315 error
= OFPERR_OFPBRC_EPERM
;
3316 } else if (victim
&& victim
->pending
) {
3317 error
= OFPROTO_POSTPONE
;
3319 struct ofoperation
*op
;
3322 if (classifier_count(&table
->cls
) > table
->max_flows
) {
3325 was_evictable
= rule
->evictable
;
3326 rule
->evictable
= false;
3327 evict
= choose_rule_to_evict(table
);
3328 rule
->evictable
= was_evictable
;
3331 error
= OFPERR_OFPFMFC_TABLE_FULL
;
3333 } else if (evict
->pending
) {
3334 error
= OFPROTO_POSTPONE
;
3341 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
3342 op
= ofoperation_create(group
, rule
, OFOPERATION_ADD
, 0);
3343 op
->victim
= victim
;
3345 error
= ofproto
->ofproto_class
->rule_construct(rule
);
3347 op
->group
->n_running
--;
3348 ofoperation_destroy(rule
->pending
);
3350 delete_flow__(evict
, group
, OFPRR_EVICTION
);
3352 ofopgroup_submit(group
);
3356 /* Back out if an error occurred. */
3358 oftable_substitute_rule(rule
, victim
);
3359 ofproto_rule_destroy__(rule
);
3364 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3366 /* Modifies the rules listed in 'rules', changing their actions to match those
3369 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3372 * Returns 0 on success, otherwise an OpenFlow error code. */
3374 modify_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3375 const struct ofputil_flow_mod
*fm
,
3376 const struct ofp_header
*request
, struct list
*rules
)
3378 struct ofopgroup
*group
;
3382 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
3383 error
= OFPERR_OFPBRC_EPERM
;
3384 LIST_FOR_EACH (rule
, ofproto_node
, rules
) {
3385 struct ofoperation
*op
;
3386 bool actions_changed
;
3388 /* FIXME: Implement OFPFF12_RESET_COUNTS */
3390 if (rule_is_modifiable(rule
)) {
3391 /* At least one rule is modifiable, don't report EPERM error. */
3397 actions_changed
= !ofpacts_equal(fm
->ofpacts
, fm
->ofpacts_len
,
3398 rule
->ofpacts
, rule
->ofpacts_len
);
3400 op
= ofoperation_create(group
, rule
, OFOPERATION_MODIFY
, 0);
3402 if (fm
->new_cookie
!= htonll(UINT64_MAX
)) {
3403 ofproto_rule_change_cookie(ofproto
, rule
, fm
->new_cookie
);
3405 if (actions_changed
) {
3406 op
->ofpacts
= rule
->ofpacts
;
3407 op
->ofpacts_len
= rule
->ofpacts_len
;
3408 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
3409 rule
->ofpacts_len
= fm
->ofpacts_len
;
3410 rule
->ofproto
->ofproto_class
->rule_modify_actions(rule
);
3412 ofoperation_complete(op
, 0);
3415 ofopgroup_submit(group
);
3421 modify_flows_add(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3422 const struct ofputil_flow_mod
*fm
,
3423 const struct ofp_header
*request
)
3425 if (fm
->cookie_mask
!= htonll(0) || fm
->new_cookie
== htonll(UINT64_MAX
)) {
3428 return add_flow(ofproto
, ofconn
, fm
, request
);
3431 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
3434 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3437 modify_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3438 const struct ofputil_flow_mod
*fm
,
3439 const struct ofp_header
*request
)
3444 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->match
,
3445 fm
->cookie
, fm
->cookie_mask
,
3449 } else if (list_is_empty(&rules
)) {
3450 return modify_flows_add(ofproto
, ofconn
, fm
, request
);
3452 return modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
);
3456 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3459 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3462 modify_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3463 const struct ofputil_flow_mod
*fm
,
3464 const struct ofp_header
*request
)
3469 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->match
,
3470 fm
->priority
, fm
->cookie
, fm
->cookie_mask
,
3475 } else if (list_is_empty(&rules
)) {
3476 return modify_flows_add(ofproto
, ofconn
, fm
, request
);
3478 return list_is_singleton(&rules
) ? modify_flows__(ofproto
, ofconn
,
3479 fm
, request
, &rules
)
3484 /* OFPFC_DELETE implementation. */
3487 delete_flow__(struct rule
*rule
, struct ofopgroup
*group
,
3488 enum ofp_flow_removed_reason reason
)
3490 struct ofproto
*ofproto
= rule
->ofproto
;
3492 ofproto_rule_send_removed(rule
, reason
);
3494 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, reason
);
3495 oftable_remove_rule(rule
);
3496 ofproto
->ofproto_class
->rule_destruct(rule
);
3499 /* Deletes the rules listed in 'rules'.
3501 * Returns 0 on success, otherwise an OpenFlow error code. */
3503 delete_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3504 const struct ofp_header
*request
, struct list
*rules
,
3505 enum ofp_flow_removed_reason reason
)
3507 struct rule
*rule
, *next
;
3508 struct ofopgroup
*group
;
3510 group
= ofopgroup_create(ofproto
, ofconn
, request
, UINT32_MAX
);
3511 LIST_FOR_EACH_SAFE (rule
, next
, ofproto_node
, rules
) {
3512 delete_flow__(rule
, group
, reason
);
3514 ofopgroup_submit(group
);
3519 /* Implements OFPFC_DELETE. */
3521 delete_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3522 const struct ofputil_flow_mod
*fm
,
3523 const struct ofp_header
*request
)
3528 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->match
,
3529 fm
->cookie
, fm
->cookie_mask
,
3530 fm
->out_port
, &rules
);
3531 return (error
? error
3532 : !list_is_empty(&rules
) ? delete_flows__(ofproto
, ofconn
, request
,
3533 &rules
, OFPRR_DELETE
)
3537 /* Implements OFPFC_DELETE_STRICT. */
3539 delete_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3540 const struct ofputil_flow_mod
*fm
,
3541 const struct ofp_header
*request
)
3546 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->match
,
3547 fm
->priority
, fm
->cookie
, fm
->cookie_mask
,
3548 fm
->out_port
, &rules
);
3549 return (error
? error
3550 : list_is_singleton(&rules
) ? delete_flows__(ofproto
, ofconn
,
3557 ofproto_rule_send_removed(struct rule
*rule
, uint8_t reason
)
3559 struct ofputil_flow_removed fr
;
3561 if (ofproto_rule_is_hidden(rule
) || !rule
->send_flow_removed
) {
3565 minimatch_expand(&rule
->cr
.match
, &fr
.match
);
3566 fr
.priority
= rule
->cr
.priority
;
3567 fr
.cookie
= rule
->flow_cookie
;
3569 fr
.table_id
= rule
->table_id
;
3570 calc_duration(rule
->created
, time_msec(),
3571 &fr
.duration_sec
, &fr
.duration_nsec
);
3572 fr
.idle_timeout
= rule
->idle_timeout
;
3573 fr
.hard_timeout
= rule
->hard_timeout
;
3574 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
, &fr
.packet_count
,
3577 connmgr_send_flow_removed(rule
->ofproto
->connmgr
, &fr
);
3581 ofproto_rule_update_used(struct rule
*rule
, long long int used
)
3583 if (used
> rule
->used
) {
3584 struct eviction_group
*evg
= rule
->eviction_group
;
3588 heap_change(&evg
->rules
, &rule
->evg_node
,
3589 rule_eviction_priority(rule
));
3594 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
3595 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
3598 * 'rule' must not have a pending operation (that is, 'rule->pending' must be
3601 * ofproto implementation ->run() functions should use this function to expire
3602 * OpenFlow flows. */
3604 ofproto_rule_expire(struct rule
*rule
, uint8_t reason
)
3606 struct ofproto
*ofproto
= rule
->ofproto
;
3607 struct ofopgroup
*group
;
3609 ovs_assert(reason
== OFPRR_HARD_TIMEOUT
|| reason
== OFPRR_IDLE_TIMEOUT
);
3611 ofproto_rule_send_removed(rule
, reason
);
3613 group
= ofopgroup_create_unattached(ofproto
);
3614 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, reason
);
3615 oftable_remove_rule(rule
);
3616 ofproto
->ofproto_class
->rule_destruct(rule
);
3617 ofopgroup_submit(group
);
3621 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3623 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3624 struct ofputil_flow_mod fm
;
3625 uint64_t ofpacts_stub
[1024 / 8];
3626 struct ofpbuf ofpacts
;
3630 error
= reject_slave_controller(ofconn
);
3635 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3636 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn_get_protocol(ofconn
),
3639 error
= ofpacts_check(fm
.ofpacts
, fm
.ofpacts_len
,
3640 &fm
.match
.flow
, ofproto
->max_ports
);
3643 error
= handle_flow_mod__(ofproto
, ofconn
, &fm
, oh
);
3646 goto exit_free_ofpacts
;
3649 /* Record the operation for logging a summary report. */
3650 switch (fm
.command
) {
3656 case OFPFC_MODIFY_STRICT
:
3657 ofproto
->n_modify
++;
3661 case OFPFC_DELETE_STRICT
:
3662 ofproto
->n_delete
++;
3667 if (ofproto
->next_op_report
== LLONG_MAX
) {
3668 ofproto
->first_op
= now
;
3669 ofproto
->next_op_report
= MAX(now
+ 10 * 1000,
3670 ofproto
->op_backoff
);
3671 ofproto
->op_backoff
= ofproto
->next_op_report
+ 60 * 1000;
3673 ofproto
->last_op
= now
;
3676 ofpbuf_uninit(&ofpacts
);
3682 handle_flow_mod__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3683 const struct ofputil_flow_mod
*fm
,
3684 const struct ofp_header
*oh
)
3686 if (ofproto
->n_pending
>= 50) {
3687 ovs_assert(!list_is_empty(&ofproto
->pending
));
3688 return OFPROTO_POSTPONE
;
3691 switch (fm
->command
) {
3693 return add_flow(ofproto
, ofconn
, fm
, oh
);
3696 return modify_flows_loose(ofproto
, ofconn
, fm
, oh
);
3698 case OFPFC_MODIFY_STRICT
:
3699 return modify_flow_strict(ofproto
, ofconn
, fm
, oh
);
3702 return delete_flows_loose(ofproto
, ofconn
, fm
, oh
);
3704 case OFPFC_DELETE_STRICT
:
3705 return delete_flow_strict(ofproto
, ofconn
, fm
, oh
);
3708 if (fm
->command
> 0xff) {
3709 VLOG_WARN_RL(&rl
, "%s: flow_mod has explicit table_id but "
3710 "flow_mod_table_id extension is not enabled",
3713 return OFPERR_OFPFMFC_BAD_COMMAND
;
3718 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3720 struct ofputil_role_request request
;
3721 struct ofputil_role_request reply
;
3725 error
= ofputil_decode_role_message(oh
, &request
);
3730 if (request
.role
!= OFPCR12_ROLE_NOCHANGE
) {
3731 if (ofconn_get_role(ofconn
) != request
.role
3732 && ofconn_has_pending_opgroups(ofconn
)) {
3733 return OFPROTO_POSTPONE
;
3736 if (request
.have_generation_id
3737 && !ofconn_set_master_election_id(ofconn
, request
.generation_id
)) {
3738 return OFPERR_OFPRRFC_STALE
;
3741 ofconn_set_role(ofconn
, request
.role
);
3744 reply
.role
= ofconn_get_role(ofconn
);
3745 reply
.have_generation_id
= ofconn_get_master_election_id(
3746 ofconn
, &reply
.generation_id
);
3747 buf
= ofputil_encode_role_reply(oh
, &reply
);
3748 ofconn_send_reply(ofconn
, buf
);
3754 handle_nxt_flow_mod_table_id(struct ofconn
*ofconn
,
3755 const struct ofp_header
*oh
)
3757 const struct nx_flow_mod_table_id
*msg
= ofpmsg_body(oh
);
3758 enum ofputil_protocol cur
, next
;
3760 cur
= ofconn_get_protocol(ofconn
);
3761 next
= ofputil_protocol_set_tid(cur
, msg
->set
!= 0);
3762 ofconn_set_protocol(ofconn
, next
);
3768 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3770 const struct nx_set_flow_format
*msg
= ofpmsg_body(oh
);
3771 enum ofputil_protocol cur
, next
;
3772 enum ofputil_protocol next_base
;
3774 next_base
= ofputil_nx_flow_format_to_protocol(ntohl(msg
->format
));
3776 return OFPERR_OFPBRC_EPERM
;
3779 cur
= ofconn_get_protocol(ofconn
);
3780 next
= ofputil_protocol_set_base(cur
, next_base
);
3781 if (cur
!= next
&& ofconn_has_pending_opgroups(ofconn
)) {
3782 /* Avoid sending async messages in surprising protocol. */
3783 return OFPROTO_POSTPONE
;
3786 ofconn_set_protocol(ofconn
, next
);
3791 handle_nxt_set_packet_in_format(struct ofconn
*ofconn
,
3792 const struct ofp_header
*oh
)
3794 const struct nx_set_packet_in_format
*msg
= ofpmsg_body(oh
);
3797 format
= ntohl(msg
->format
);
3798 if (format
!= NXPIF_OPENFLOW10
&& format
!= NXPIF_NXM
) {
3799 return OFPERR_OFPBRC_EPERM
;
3802 if (format
!= ofconn_get_packet_in_format(ofconn
)
3803 && ofconn_has_pending_opgroups(ofconn
)) {
3804 /* Avoid sending async message in surprsing packet in format. */
3805 return OFPROTO_POSTPONE
;
3808 ofconn_set_packet_in_format(ofconn
, format
);
3813 handle_nxt_set_async_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3815 const struct nx_async_config
*msg
= ofpmsg_body(oh
);
3816 uint32_t master
[OAM_N_TYPES
];
3817 uint32_t slave
[OAM_N_TYPES
];
3819 master
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[0]);
3820 master
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[0]);
3821 master
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[0]);
3823 slave
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[1]);
3824 slave
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[1]);
3825 slave
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[1]);
3827 ofconn_set_async_config(ofconn
, master
, slave
);
3828 if (ofconn_get_type(ofconn
) == OFCONN_SERVICE
&&
3829 !ofconn_get_miss_send_len(ofconn
)) {
3830 ofconn_set_miss_send_len(ofconn
, OFP_DEFAULT_MISS_SEND_LEN
);
3837 handle_nxt_set_controller_id(struct ofconn
*ofconn
,
3838 const struct ofp_header
*oh
)
3840 const struct nx_controller_id
*nci
= ofpmsg_body(oh
);
3842 if (!is_all_zeros(nci
->zero
, sizeof nci
->zero
)) {
3843 return OFPERR_NXBRC_MUST_BE_ZERO
;
3846 ofconn_set_controller_id(ofconn
, ntohs(nci
->controller_id
));
3851 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3855 if (ofconn_has_pending_opgroups(ofconn
)) {
3856 return OFPROTO_POSTPONE
;
3859 buf
= ofpraw_alloc_reply((oh
->version
== OFP10_VERSION
3860 ? OFPRAW_OFPT10_BARRIER_REPLY
3861 : OFPRAW_OFPT11_BARRIER_REPLY
), oh
, 0);
3862 ofconn_send_reply(ofconn
, buf
);
3867 ofproto_compose_flow_refresh_update(const struct rule
*rule
,
3868 enum nx_flow_monitor_flags flags
,
3871 struct ofoperation
*op
= rule
->pending
;
3872 struct ofputil_flow_update fu
;
3875 if (op
&& op
->type
== OFOPERATION_ADD
&& !op
->victim
) {
3876 /* We'll report the final flow when the operation completes. Reporting
3877 * it now would cause a duplicate report later. */
3881 fu
.event
= (flags
& (NXFMF_INITIAL
| NXFMF_ADD
)
3882 ? NXFME_ADDED
: NXFME_MODIFIED
);
3884 fu
.idle_timeout
= rule
->idle_timeout
;
3885 fu
.hard_timeout
= rule
->hard_timeout
;
3886 fu
.table_id
= rule
->table_id
;
3887 fu
.cookie
= rule
->flow_cookie
;
3888 minimatch_expand(&rule
->cr
.match
, &match
);
3890 fu
.priority
= rule
->cr
.priority
;
3891 if (!(flags
& NXFMF_ACTIONS
)) {
3895 fu
.ofpacts
= rule
->ofpacts
;
3896 fu
.ofpacts_len
= rule
->ofpacts_len
;
3898 /* An operation is in progress. Use the previous version of the flow's
3899 * actions, so that when the operation commits we report the change. */
3901 case OFOPERATION_ADD
:
3902 /* We already verified that there was a victim. */
3903 fu
.ofpacts
= op
->victim
->ofpacts
;
3904 fu
.ofpacts_len
= op
->victim
->ofpacts_len
;
3907 case OFOPERATION_MODIFY
:
3909 fu
.ofpacts
= op
->ofpacts
;
3910 fu
.ofpacts_len
= op
->ofpacts_len
;
3912 fu
.ofpacts
= rule
->ofpacts
;
3913 fu
.ofpacts_len
= rule
->ofpacts_len
;
3917 case OFOPERATION_DELETE
:
3918 fu
.ofpacts
= rule
->ofpacts
;
3919 fu
.ofpacts_len
= rule
->ofpacts_len
;
3927 if (list_is_empty(msgs
)) {
3928 ofputil_start_flow_update(msgs
);
3930 ofputil_append_flow_update(&fu
, msgs
);
3934 ofmonitor_compose_refresh_updates(struct list
*rules
, struct list
*msgs
)
3938 LIST_FOR_EACH (rule
, ofproto_node
, rules
) {
3939 enum nx_flow_monitor_flags flags
= rule
->monitor_flags
;
3940 rule
->monitor_flags
= 0;
3942 ofproto_compose_flow_refresh_update(rule
, flags
, msgs
);
3947 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor
*m
,
3948 struct rule
*rule
, uint64_t seqno
,
3951 enum nx_flow_monitor_flags update
;
3953 if (ofproto_rule_is_hidden(rule
)) {
3958 ? ofoperation_has_out_port(rule
->pending
, m
->out_port
)
3959 : ofproto_rule_has_out_port(rule
, m
->out_port
))) {
3964 if (rule
->add_seqno
> seqno
) {
3965 update
= NXFMF_ADD
| NXFMF_MODIFY
;
3966 } else if (rule
->modify_seqno
> seqno
) {
3967 update
= NXFMF_MODIFY
;
3972 if (!(m
->flags
& update
)) {
3976 update
= NXFMF_INITIAL
;
3979 if (!rule
->monitor_flags
) {
3980 list_push_back(rules
, &rule
->ofproto_node
);
3982 rule
->monitor_flags
|= update
| (m
->flags
& NXFMF_ACTIONS
);
3986 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor
*m
,
3990 const struct ofproto
*ofproto
= ofconn_get_ofproto(m
->ofconn
);
3991 const struct ofoperation
*op
;
3992 const struct oftable
*table
;
3993 struct cls_rule target
;
3995 cls_rule_init_from_minimatch(&target
, &m
->match
, 0);
3996 FOR_EACH_MATCHING_TABLE (table
, m
->table_id
, ofproto
) {
3997 struct cls_cursor cursor
;
4000 cls_cursor_init(&cursor
, &table
->cls
, &target
);
4001 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
4002 ovs_assert(!rule
->pending
); /* XXX */
4003 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
4007 HMAP_FOR_EACH (op
, hmap_node
, &ofproto
->deletions
) {
4008 struct rule
*rule
= op
->rule
;
4010 if (((m
->table_id
== 0xff
4011 ? !(ofproto
->tables
[rule
->table_id
].flags
& OFTABLE_HIDDEN
)
4012 : m
->table_id
== rule
->table_id
))
4013 && cls_rule_is_loose_match(&rule
->cr
, &target
.match
)) {
4014 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
4017 cls_rule_destroy(&target
);
4021 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor
*m
,
4024 if (m
->flags
& NXFMF_INITIAL
) {
4025 ofproto_collect_ofmonitor_refresh_rules(m
, 0, rules
);
4030 ofmonitor_collect_resume_rules(struct ofmonitor
*m
,
4031 uint64_t seqno
, struct list
*rules
)
4033 ofproto_collect_ofmonitor_refresh_rules(m
, seqno
, rules
);
4037 handle_flow_monitor_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4039 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
4040 struct ofmonitor
**monitors
;
4041 size_t n_monitors
, allocated_monitors
;
4042 struct list replies
;
4049 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
4051 n_monitors
= allocated_monitors
= 0;
4053 struct ofputil_flow_monitor_request request
;
4054 struct ofmonitor
*m
;
4057 retval
= ofputil_decode_flow_monitor_request(&request
, &b
);
4058 if (retval
== EOF
) {
4060 } else if (retval
) {
4065 if (request
.table_id
!= 0xff
4066 && request
.table_id
>= ofproto
->n_tables
) {
4067 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
4071 error
= ofmonitor_create(&request
, ofconn
, &m
);
4076 if (n_monitors
>= allocated_monitors
) {
4077 monitors
= x2nrealloc(monitors
, &allocated_monitors
,
4080 monitors
[n_monitors
++] = m
;
4084 for (i
= 0; i
< n_monitors
; i
++) {
4085 ofproto_collect_ofmonitor_initial_rules(monitors
[i
], &rules
);
4088 ofpmp_init(&replies
, oh
);
4089 ofmonitor_compose_refresh_updates(&rules
, &replies
);
4090 ofconn_send_replies(ofconn
, &replies
);
4097 for (i
= 0; i
< n_monitors
; i
++) {
4098 ofmonitor_destroy(monitors
[i
]);
4105 handle_flow_monitor_cancel(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4107 struct ofmonitor
*m
;
4110 id
= ofputil_decode_flow_monitor_cancel(oh
);
4111 m
= ofmonitor_lookup(ofconn
, id
);
4113 return OFPERR_NXBRC_FM_BAD_ID
;
4116 ofmonitor_destroy(m
);
4121 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
4123 const struct ofp_header
*oh
= msg
->data
;
4127 error
= ofptype_decode(&type
, oh
);
4133 /* OpenFlow requests. */
4134 case OFPTYPE_ECHO_REQUEST
:
4135 return handle_echo_request(ofconn
, oh
);
4137 case OFPTYPE_FEATURES_REQUEST
:
4138 return handle_features_request(ofconn
, oh
);
4140 case OFPTYPE_GET_CONFIG_REQUEST
:
4141 return handle_get_config_request(ofconn
, oh
);
4143 case OFPTYPE_SET_CONFIG
:
4144 return handle_set_config(ofconn
, oh
);
4146 case OFPTYPE_PACKET_OUT
:
4147 return handle_packet_out(ofconn
, oh
);
4149 case OFPTYPE_PORT_MOD
:
4150 return handle_port_mod(ofconn
, oh
);
4152 case OFPTYPE_FLOW_MOD
:
4153 return handle_flow_mod(ofconn
, oh
);
4155 case OFPTYPE_BARRIER_REQUEST
:
4156 return handle_barrier_request(ofconn
, oh
);
4158 case OFPTYPE_ROLE_REQUEST
:
4159 return handle_role_request(ofconn
, oh
);
4161 /* OpenFlow replies. */
4162 case OFPTYPE_ECHO_REPLY
:
4165 /* Nicira extension requests. */
4166 case OFPTYPE_FLOW_MOD_TABLE_ID
:
4167 return handle_nxt_flow_mod_table_id(ofconn
, oh
);
4169 case OFPTYPE_SET_FLOW_FORMAT
:
4170 return handle_nxt_set_flow_format(ofconn
, oh
);
4172 case OFPTYPE_SET_PACKET_IN_FORMAT
:
4173 return handle_nxt_set_packet_in_format(ofconn
, oh
);
4175 case OFPTYPE_SET_CONTROLLER_ID
:
4176 return handle_nxt_set_controller_id(ofconn
, oh
);
4178 case OFPTYPE_FLOW_AGE
:
4179 /* Nothing to do. */
4182 case OFPTYPE_FLOW_MONITOR_CANCEL
:
4183 return handle_flow_monitor_cancel(ofconn
, oh
);
4185 case OFPTYPE_SET_ASYNC_CONFIG
:
4186 return handle_nxt_set_async_config(ofconn
, oh
);
4188 /* Statistics requests. */
4189 case OFPTYPE_DESC_STATS_REQUEST
:
4190 return handle_desc_stats_request(ofconn
, oh
);
4192 case OFPTYPE_FLOW_STATS_REQUEST
:
4193 return handle_flow_stats_request(ofconn
, oh
);
4195 case OFPTYPE_AGGREGATE_STATS_REQUEST
:
4196 return handle_aggregate_stats_request(ofconn
, oh
);
4198 case OFPTYPE_TABLE_STATS_REQUEST
:
4199 return handle_table_stats_request(ofconn
, oh
);
4201 case OFPTYPE_PORT_STATS_REQUEST
:
4202 return handle_port_stats_request(ofconn
, oh
);
4204 case OFPTYPE_QUEUE_STATS_REQUEST
:
4205 return handle_queue_stats_request(ofconn
, oh
);
4207 case OFPTYPE_PORT_DESC_STATS_REQUEST
:
4208 return handle_port_desc_stats_request(ofconn
, oh
);
4210 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST
:
4211 return handle_flow_monitor_request(ofconn
, oh
);
4213 /* FIXME: Change the following once they are implemented: */
4214 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST
:
4215 case OFPTYPE_GET_ASYNC_REQUEST
:
4216 case OFPTYPE_METER_MOD
:
4217 case OFPTYPE_GROUP_REQUEST
:
4218 case OFPTYPE_GROUP_DESC_REQUEST
:
4219 case OFPTYPE_GROUP_FEATURES_REQUEST
:
4220 case OFPTYPE_METER_REQUEST
:
4221 case OFPTYPE_METER_CONFIG_REQUEST
:
4222 case OFPTYPE_METER_FEATURES_REQUEST
:
4223 case OFPTYPE_TABLE_FEATURES_REQUEST
:
4224 return OFPERR_OFPBRC_BAD_TYPE
;
4228 case OFPTYPE_FEATURES_REPLY
:
4229 case OFPTYPE_GET_CONFIG_REPLY
:
4230 case OFPTYPE_PACKET_IN
:
4231 case OFPTYPE_FLOW_REMOVED
:
4232 case OFPTYPE_PORT_STATUS
:
4233 case OFPTYPE_BARRIER_REPLY
:
4234 case OFPTYPE_QUEUE_GET_CONFIG_REPLY
:
4235 case OFPTYPE_DESC_STATS_REPLY
:
4236 case OFPTYPE_FLOW_STATS_REPLY
:
4237 case OFPTYPE_QUEUE_STATS_REPLY
:
4238 case OFPTYPE_PORT_STATS_REPLY
:
4239 case OFPTYPE_TABLE_STATS_REPLY
:
4240 case OFPTYPE_AGGREGATE_STATS_REPLY
:
4241 case OFPTYPE_PORT_DESC_STATS_REPLY
:
4242 case OFPTYPE_ROLE_REPLY
:
4243 case OFPTYPE_FLOW_MONITOR_PAUSED
:
4244 case OFPTYPE_FLOW_MONITOR_RESUMED
:
4245 case OFPTYPE_FLOW_MONITOR_STATS_REPLY
:
4246 case OFPTYPE_GET_ASYNC_REPLY
:
4247 case OFPTYPE_GROUP_REPLY
:
4248 case OFPTYPE_GROUP_DESC_REPLY
:
4249 case OFPTYPE_GROUP_FEATURES_REPLY
:
4250 case OFPTYPE_METER_REPLY
:
4251 case OFPTYPE_METER_CONFIG_REPLY
:
4252 case OFPTYPE_METER_FEATURES_REPLY
:
4253 case OFPTYPE_TABLE_FEATURES_REPLY
:
4255 return OFPERR_OFPBRC_BAD_TYPE
;
4260 handle_openflow(struct ofconn
*ofconn
, const struct ofpbuf
*ofp_msg
)
4262 int error
= handle_openflow__(ofconn
, ofp_msg
);
4263 if (error
&& error
!= OFPROTO_POSTPONE
) {
4264 ofconn_send_error(ofconn
, ofp_msg
->data
, error
);
4266 COVERAGE_INC(ofproto_recv_openflow
);
4267 return error
!= OFPROTO_POSTPONE
;
4270 /* Asynchronous operations. */
4272 /* Creates and returns a new ofopgroup that is not associated with any
4273 * OpenFlow connection.
4275 * The caller should add operations to the returned group with
4276 * ofoperation_create() and then submit it with ofopgroup_submit(). */
4277 static struct ofopgroup
*
4278 ofopgroup_create_unattached(struct ofproto
*ofproto
)
4280 struct ofopgroup
*group
= xzalloc(sizeof *group
);
4281 group
->ofproto
= ofproto
;
4282 list_init(&group
->ofproto_node
);
4283 list_init(&group
->ops
);
4284 list_init(&group
->ofconn_node
);
4288 /* Creates and returns a new ofopgroup for 'ofproto'.
4290 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
4291 * connection. The 'request' and 'buffer_id' arguments are ignored.
4293 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
4294 * If the ofopgroup eventually fails, then the error reply will include
4295 * 'request'. If the ofopgroup eventually succeeds, then the packet with
4296 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
4298 * The caller should add operations to the returned group with
4299 * ofoperation_create() and then submit it with ofopgroup_submit(). */
4300 static struct ofopgroup
*
4301 ofopgroup_create(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4302 const struct ofp_header
*request
, uint32_t buffer_id
)
4304 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
4306 size_t request_len
= ntohs(request
->length
);
4308 ovs_assert(ofconn_get_ofproto(ofconn
) == ofproto
);
4310 ofconn_add_opgroup(ofconn
, &group
->ofconn_node
);
4311 group
->ofconn
= ofconn
;
4312 group
->request
= xmemdup(request
, MIN(request_len
, 64));
4313 group
->buffer_id
= buffer_id
;
4318 /* Submits 'group' for processing.
4320 * If 'group' contains no operations (e.g. none were ever added, or all of the
4321 * ones that were added completed synchronously), then it is destroyed
4322 * immediately. Otherwise it is added to the ofproto's list of pending
4325 ofopgroup_submit(struct ofopgroup
*group
)
4327 if (!group
->n_running
) {
4328 ofopgroup_complete(group
);
4330 list_push_back(&group
->ofproto
->pending
, &group
->ofproto_node
);
4331 group
->ofproto
->n_pending
++;
4336 ofopgroup_complete(struct ofopgroup
*group
)
4338 struct ofproto
*ofproto
= group
->ofproto
;
4340 struct ofconn
*abbrev_ofconn
;
4341 ovs_be32 abbrev_xid
;
4343 struct ofoperation
*op
, *next_op
;
4346 ovs_assert(!group
->n_running
);
4349 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
4356 if (!error
&& group
->ofconn
&& group
->buffer_id
!= UINT32_MAX
) {
4357 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
4358 if (op
->type
!= OFOPERATION_DELETE
) {
4359 struct ofpbuf
*packet
;
4362 error
= ofconn_pktbuf_retrieve(group
->ofconn
, group
->buffer_id
,
4366 error
= rule_execute(op
->rule
, in_port
, packet
);
4373 if (!error
&& !list_is_empty(&group
->ofconn_node
)) {
4374 abbrev_ofconn
= group
->ofconn
;
4375 abbrev_xid
= group
->request
->xid
;
4377 abbrev_ofconn
= NULL
;
4378 abbrev_xid
= htonl(0);
4380 LIST_FOR_EACH_SAFE (op
, next_op
, group_node
, &group
->ops
) {
4381 struct rule
*rule
= op
->rule
;
4383 /* We generally want to report the change to active OpenFlow flow
4384 monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions:
4386 - The operation failed.
4388 - The affected rule is not visible to controllers.
4390 - The operation's only effect was to update rule->modified. */
4392 || ofproto_rule_is_hidden(rule
)
4393 || (op
->type
== OFOPERATION_MODIFY
4395 && rule
->flow_cookie
== op
->flow_cookie
))) {
4396 /* Check that we can just cast from ofoperation_type to
4397 * nx_flow_update_event. */
4398 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_ADD
4400 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_DELETE
4402 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_MODIFY
4405 ofmonitor_report(ofproto
->connmgr
, rule
,
4406 (enum nx_flow_update_event
) op
->type
,
4407 op
->reason
, abbrev_ofconn
, abbrev_xid
);
4410 rule
->pending
= NULL
;
4413 case OFOPERATION_ADD
:
4417 ofproto_rule_destroy__(op
->victim
);
4418 vid_mask
= minimask_get_vid_mask(&rule
->cr
.match
.mask
);
4419 if (vid_mask
== VLAN_VID_MASK
) {
4420 if (ofproto
->vlan_bitmap
) {
4421 uint16_t vid
= miniflow_get_vid(&rule
->cr
.match
.flow
);
4422 if (!bitmap_is_set(ofproto
->vlan_bitmap
, vid
)) {
4423 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
4424 ofproto
->vlans_changed
= true;
4427 ofproto
->vlans_changed
= true;
4431 oftable_substitute_rule(rule
, op
->victim
);
4432 ofproto_rule_destroy__(rule
);
4436 case OFOPERATION_DELETE
:
4437 ovs_assert(!op
->error
);
4438 ofproto_rule_destroy__(rule
);
4442 case OFOPERATION_MODIFY
:
4444 rule
->modified
= time_msec();
4446 ofproto_rule_change_cookie(ofproto
, rule
, op
->flow_cookie
);
4448 free(rule
->ofpacts
);
4449 rule
->ofpacts
= op
->ofpacts
;
4450 rule
->ofpacts_len
= op
->ofpacts_len
;
4452 op
->ofpacts_len
= 0;
4461 ofoperation_destroy(op
);
4464 ofmonitor_flush(ofproto
->connmgr
);
4466 if (!list_is_empty(&group
->ofproto_node
)) {
4467 ovs_assert(ofproto
->n_pending
> 0);
4468 ofproto
->n_pending
--;
4469 list_remove(&group
->ofproto_node
);
4471 if (!list_is_empty(&group
->ofconn_node
)) {
4472 list_remove(&group
->ofconn_node
);
4474 ofconn_send_error(group
->ofconn
, group
->request
, error
);
4476 connmgr_retry(ofproto
->connmgr
);
4478 free(group
->request
);
4482 /* Initiates a new operation on 'rule', of the specified 'type', within
4483 * 'group'. Prior to calling, 'rule' must not have any pending operation.
4485 * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that
4486 * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0).
4488 * Returns the newly created ofoperation (which is also available as
4489 * rule->pending). */
4490 static struct ofoperation
*
4491 ofoperation_create(struct ofopgroup
*group
, struct rule
*rule
,
4492 enum ofoperation_type type
,
4493 enum ofp_flow_removed_reason reason
)
4495 struct ofproto
*ofproto
= group
->ofproto
;
4496 struct ofoperation
*op
;
4498 ovs_assert(!rule
->pending
);
4500 op
= rule
->pending
= xzalloc(sizeof *op
);
4502 list_push_back(&group
->ops
, &op
->group_node
);
4505 op
->reason
= reason
;
4506 op
->flow_cookie
= rule
->flow_cookie
;
4510 if (type
== OFOPERATION_DELETE
) {
4511 hmap_insert(&ofproto
->deletions
, &op
->hmap_node
,
4512 cls_rule_hash(&rule
->cr
, rule
->table_id
));
4519 ofoperation_destroy(struct ofoperation
*op
)
4521 struct ofopgroup
*group
= op
->group
;
4524 op
->rule
->pending
= NULL
;
4526 if (op
->type
== OFOPERATION_DELETE
) {
4527 hmap_remove(&group
->ofproto
->deletions
, &op
->hmap_node
);
4529 list_remove(&op
->group_node
);
4534 /* Indicates that 'op' completed with status 'error', which is either 0 to
4535 * indicate success or an OpenFlow error code on failure.
4537 * If 'error' is 0, indicating success, the operation will be committed
4538 * permanently to the flow table. There is one interesting subcase:
4540 * - If 'op' is an "add flow" operation that is replacing an existing rule in
4541 * the flow table (the "victim" rule) by a new one, then the caller must
4542 * have uninitialized any derived state in the victim rule, as in step 5 in
4543 * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete()
4544 * performs steps 6 and 7 for the victim rule, most notably by calling its
4545 * ->rule_dealloc() function.
4547 * If 'error' is nonzero, then generally the operation will be rolled back:
4549 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
4550 * restores the original rule. The caller must have uninitialized any
4551 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
4552 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
4553 * and 7 for the new rule, calling its ->rule_dealloc() function.
4555 * - If 'op' is a "modify flow" operation, ofproto restores the original
4558 * - 'op' must not be a "delete flow" operation. Removing a rule is not
4559 * allowed to fail. It must always succeed.
4561 * Please see the large comment in ofproto/ofproto-provider.h titled
4562 * "Asynchronous Operation Support" for more information. */
4564 ofoperation_complete(struct ofoperation
*op
, enum ofperr error
)
4566 struct ofopgroup
*group
= op
->group
;
4568 ovs_assert(op
->rule
->pending
== op
);
4569 ovs_assert(group
->n_running
> 0);
4570 ovs_assert(!error
|| op
->type
!= OFOPERATION_DELETE
);
4573 if (!--group
->n_running
&& !list_is_empty(&group
->ofproto_node
)) {
4574 ofopgroup_complete(group
);
4579 ofoperation_get_victim(struct ofoperation
*op
)
4581 ovs_assert(op
->type
== OFOPERATION_ADD
);
4586 pick_datapath_id(const struct ofproto
*ofproto
)
4588 const struct ofport
*port
;
4590 port
= ofproto_get_port(ofproto
, OFPP_LOCAL
);
4592 uint8_t ea
[ETH_ADDR_LEN
];
4595 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4597 return eth_addr_to_uint64(ea
);
4599 VLOG_WARN("%s: could not get MAC address for %s (%s)",
4600 ofproto
->name
, netdev_get_name(port
->netdev
),
4603 return ofproto
->fallback_dpid
;
4607 pick_fallback_dpid(void)
4609 uint8_t ea
[ETH_ADDR_LEN
];
4610 eth_addr_nicira_random(ea
);
4611 return eth_addr_to_uint64(ea
);
4614 /* Table overflow policy. */
4616 /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table
4617 * is not configured to evict rules or if the table contains no evictable
4618 * rules. (Rules with 'evictable' set to false or with no timeouts are not
4620 static struct rule
*
4621 choose_rule_to_evict(struct oftable
*table
)
4623 struct eviction_group
*evg
;
4625 if (!table
->eviction_fields
) {
4629 /* In the common case, the outer and inner loops here will each be entered
4632 * - The inner loop normally "return"s in its first iteration. If the
4633 * eviction group has any evictable rules, then it always returns in
4636 * - The outer loop only iterates more than once if the largest eviction
4637 * group has no evictable rules.
4639 * - The outer loop can exit only if table's 'max_flows' is all filled up
4640 * by unevictable rules'. */
4641 HEAP_FOR_EACH (evg
, size_node
, &table
->eviction_groups_by_size
) {
4644 HEAP_FOR_EACH (rule
, evg_node
, &evg
->rules
) {
4645 if (rule
->evictable
) {
4654 /* Searches 'ofproto' for tables that have more flows than their configured
4655 * maximum and that have flow eviction enabled, and evicts as many flows as
4656 * necessary and currently feasible from them.
4658 * This triggers only when an OpenFlow table has N flows in it and then the
4659 * client configures a maximum number of flows less than N. */
4661 ofproto_evict(struct ofproto
*ofproto
)
4663 struct ofopgroup
*group
;
4664 struct oftable
*table
;
4666 group
= ofopgroup_create_unattached(ofproto
);
4667 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
4668 while (classifier_count(&table
->cls
) > table
->max_flows
4669 && table
->eviction_fields
) {
4672 rule
= choose_rule_to_evict(table
);
4673 if (!rule
|| rule
->pending
) {
4677 ofoperation_create(group
, rule
,
4678 OFOPERATION_DELETE
, OFPRR_EVICTION
);
4679 oftable_remove_rule(rule
);
4680 ofproto
->ofproto_class
->rule_destruct(rule
);
4683 ofopgroup_submit(group
);
4686 /* Eviction groups. */
4688 /* Returns the priority to use for an eviction_group that contains 'n_rules'
4689 * rules. The priority contains low-order random bits to ensure that eviction
4690 * groups with the same number of rules are prioritized randomly. */
4692 eviction_group_priority(size_t n_rules
)
4694 uint16_t size
= MIN(UINT16_MAX
, n_rules
);
4695 return (size
<< 16) | random_uint16();
4698 /* Updates 'evg', an eviction_group within 'table', following a change that
4699 * adds or removes rules in 'evg'. */
4701 eviction_group_resized(struct oftable
*table
, struct eviction_group
*evg
)
4703 heap_change(&table
->eviction_groups_by_size
, &evg
->size_node
,
4704 eviction_group_priority(heap_count(&evg
->rules
)));
4707 /* Destroys 'evg', an eviction_group within 'table':
4709 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
4710 * rules themselves, just removes them from the eviction group.)
4712 * - Removes 'evg' from 'table'.
4716 eviction_group_destroy(struct oftable
*table
, struct eviction_group
*evg
)
4718 while (!heap_is_empty(&evg
->rules
)) {
4721 rule
= CONTAINER_OF(heap_pop(&evg
->rules
), struct rule
, evg_node
);
4722 rule
->eviction_group
= NULL
;
4724 hmap_remove(&table
->eviction_groups_by_id
, &evg
->id_node
);
4725 heap_remove(&table
->eviction_groups_by_size
, &evg
->size_node
);
4726 heap_destroy(&evg
->rules
);
4730 /* Removes 'rule' from its eviction group, if any. */
4732 eviction_group_remove_rule(struct rule
*rule
)
4734 if (rule
->eviction_group
) {
4735 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
4736 struct eviction_group
*evg
= rule
->eviction_group
;
4738 rule
->eviction_group
= NULL
;
4739 heap_remove(&evg
->rules
, &rule
->evg_node
);
4740 if (heap_is_empty(&evg
->rules
)) {
4741 eviction_group_destroy(table
, evg
);
4743 eviction_group_resized(table
, evg
);
4748 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
4749 * returns the hash value. */
4751 eviction_group_hash_rule(struct rule
*rule
)
4753 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
4754 const struct mf_subfield
*sf
;
4758 hash
= table
->eviction_group_id_basis
;
4759 miniflow_expand(&rule
->cr
.match
.flow
, &flow
);
4760 for (sf
= table
->eviction_fields
;
4761 sf
< &table
->eviction_fields
[table
->n_eviction_fields
];
4764 if (mf_are_prereqs_ok(sf
->field
, &flow
)) {
4765 union mf_value value
;
4767 mf_get_value(sf
->field
, &flow
, &value
);
4769 bitwise_zero(&value
, sf
->field
->n_bytes
, 0, sf
->ofs
);
4771 if (sf
->ofs
+ sf
->n_bits
< sf
->field
->n_bytes
* 8) {
4772 unsigned int start
= sf
->ofs
+ sf
->n_bits
;
4773 bitwise_zero(&value
, sf
->field
->n_bytes
, start
,
4774 sf
->field
->n_bytes
* 8 - start
);
4776 hash
= hash_bytes(&value
, sf
->field
->n_bytes
, hash
);
4778 hash
= hash_int(hash
, 0);
4785 /* Returns an eviction group within 'table' with the given 'id', creating one
4787 static struct eviction_group
*
4788 eviction_group_find(struct oftable
*table
, uint32_t id
)
4790 struct eviction_group
*evg
;
4792 HMAP_FOR_EACH_WITH_HASH (evg
, id_node
, id
, &table
->eviction_groups_by_id
) {
4796 evg
= xmalloc(sizeof *evg
);
4797 hmap_insert(&table
->eviction_groups_by_id
, &evg
->id_node
, id
);
4798 heap_insert(&table
->eviction_groups_by_size
, &evg
->size_node
,
4799 eviction_group_priority(0));
4800 heap_init(&evg
->rules
);
4805 /* Returns an eviction priority for 'rule'. The return value should be
4806 * interpreted so that higher priorities make a rule more attractive candidates
4809 rule_eviction_priority(struct rule
*rule
)
4811 long long int hard_expiration
;
4812 long long int idle_expiration
;
4813 long long int expiration
;
4814 uint32_t expiration_offset
;
4816 /* Calculate time of expiration. */
4817 hard_expiration
= (rule
->hard_timeout
4818 ? rule
->modified
+ rule
->hard_timeout
* 1000
4820 idle_expiration
= (rule
->idle_timeout
4821 ? rule
->used
+ rule
->idle_timeout
* 1000
4823 expiration
= MIN(hard_expiration
, idle_expiration
);
4824 if (expiration
== LLONG_MAX
) {
4828 /* Calculate the time of expiration as a number of (approximate) seconds
4829 * after program startup.
4831 * This should work OK for program runs that last UINT32_MAX seconds or
4832 * less. Therefore, please restart OVS at least once every 136 years. */
4833 expiration_offset
= (expiration
>> 10) - (time_boot_msec() >> 10);
4835 /* Invert the expiration offset because we're using a max-heap. */
4836 return UINT32_MAX
- expiration_offset
;
4839 /* Adds 'rule' to an appropriate eviction group for its oftable's
4840 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
4841 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
4844 * The caller must ensure that 'rule' is not already in an eviction group. */
4846 eviction_group_add_rule(struct rule
*rule
)
4848 struct ofproto
*ofproto
= rule
->ofproto
;
4849 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4851 if (table
->eviction_fields
4852 && (rule
->hard_timeout
|| rule
->idle_timeout
)) {
4853 struct eviction_group
*evg
;
4855 evg
= eviction_group_find(table
, eviction_group_hash_rule(rule
));
4857 rule
->eviction_group
= evg
;
4858 heap_insert(&evg
->rules
, &rule
->evg_node
,
4859 rule_eviction_priority(rule
));
4860 eviction_group_resized(table
, evg
);
4866 /* Initializes 'table'. */
4868 oftable_init(struct oftable
*table
)
4870 memset(table
, 0, sizeof *table
);
4871 classifier_init(&table
->cls
);
4872 table
->max_flows
= UINT_MAX
;
4875 /* Destroys 'table', including its classifier and eviction groups.
4877 * The caller is responsible for freeing 'table' itself. */
4879 oftable_destroy(struct oftable
*table
)
4881 ovs_assert(classifier_is_empty(&table
->cls
));
4882 oftable_disable_eviction(table
);
4883 classifier_destroy(&table
->cls
);
4887 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
4888 * string, then 'table' will use its default name.
4890 * This only affects the name exposed for a table exposed through the OpenFlow
4891 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
4893 oftable_set_name(struct oftable
*table
, const char *name
)
4895 if (name
&& name
[0]) {
4896 int len
= strnlen(name
, OFP_MAX_TABLE_NAME_LEN
);
4897 if (!table
->name
|| strncmp(name
, table
->name
, len
)) {
4899 table
->name
= xmemdup0(name
, len
);
4907 /* oftables support a choice of two policies when adding a rule would cause the
4908 * number of flows in the table to exceed the configured maximum number: either
4909 * they can refuse to add the new flow or they can evict some existing flow.
4910 * This function configures the former policy on 'table'. */
4912 oftable_disable_eviction(struct oftable
*table
)
4914 if (table
->eviction_fields
) {
4915 struct eviction_group
*evg
, *next
;
4917 HMAP_FOR_EACH_SAFE (evg
, next
, id_node
,
4918 &table
->eviction_groups_by_id
) {
4919 eviction_group_destroy(table
, evg
);
4921 hmap_destroy(&table
->eviction_groups_by_id
);
4922 heap_destroy(&table
->eviction_groups_by_size
);
4924 free(table
->eviction_fields
);
4925 table
->eviction_fields
= NULL
;
4926 table
->n_eviction_fields
= 0;
4930 /* oftables support a choice of two policies when adding a rule would cause the
4931 * number of flows in the table to exceed the configured maximum number: either
4932 * they can refuse to add the new flow or they can evict some existing flow.
4933 * This function configures the latter policy on 'table', with fairness based
4934 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
4935 * 'n_fields' as 0 disables fairness.) */
4937 oftable_enable_eviction(struct oftable
*table
,
4938 const struct mf_subfield
*fields
, size_t n_fields
)
4940 struct cls_cursor cursor
;
4943 if (table
->eviction_fields
4944 && n_fields
== table
->n_eviction_fields
4946 || !memcmp(fields
, table
->eviction_fields
,
4947 n_fields
* sizeof *fields
))) {
4952 oftable_disable_eviction(table
);
4954 table
->n_eviction_fields
= n_fields
;
4955 table
->eviction_fields
= xmemdup(fields
, n_fields
* sizeof *fields
);
4957 table
->eviction_group_id_basis
= random_uint32();
4958 hmap_init(&table
->eviction_groups_by_id
);
4959 heap_init(&table
->eviction_groups_by_size
);
4961 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
4962 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
4963 eviction_group_add_rule(rule
);
4967 /* Removes 'rule' from the oftable that contains it. */
4969 oftable_remove_rule(struct rule
*rule
)
4971 struct ofproto
*ofproto
= rule
->ofproto
;
4972 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4974 classifier_remove(&table
->cls
, &rule
->cr
);
4975 cookies_remove(ofproto
, rule
);
4976 eviction_group_remove_rule(rule
);
4977 if (!list_is_empty(&rule
->expirable
)) {
4978 list_remove(&rule
->expirable
);
4982 /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s
4983 * oftable that has an identical cls_rule. Returns the rule that was removed,
4984 * if any, and otherwise NULL. */
4985 static struct rule
*
4986 oftable_replace_rule(struct rule
*rule
)
4988 struct ofproto
*ofproto
= rule
->ofproto
;
4989 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4990 struct rule
*victim
;
4991 bool may_expire
= rule
->hard_timeout
|| rule
->idle_timeout
;
4994 list_insert(&ofproto
->expirable
, &rule
->expirable
);
4996 cookies_insert(ofproto
, rule
);
4998 victim
= rule_from_cls_rule(classifier_replace(&table
->cls
, &rule
->cr
));
5000 cookies_remove(ofproto
, victim
);
5002 if (!list_is_empty(&victim
->expirable
)) {
5003 list_remove(&victim
->expirable
);
5005 eviction_group_remove_rule(victim
);
5007 eviction_group_add_rule(rule
);
5011 /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */
5013 oftable_substitute_rule(struct rule
*old
, struct rule
*new)
5016 oftable_replace_rule(new);
5018 oftable_remove_rule(old
);
5022 /* unixctl commands. */
5025 ofproto_lookup(const char *name
)
5027 struct ofproto
*ofproto
;
5029 HMAP_FOR_EACH_WITH_HASH (ofproto
, hmap_node
, hash_string(name
, 0),
5031 if (!strcmp(ofproto
->name
, name
)) {
5039 ofproto_unixctl_list(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
5040 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
5042 struct ofproto
*ofproto
;
5046 HMAP_FOR_EACH (ofproto
, hmap_node
, &all_ofprotos
) {
5047 ds_put_format(&results
, "%s\n", ofproto
->name
);
5049 unixctl_command_reply(conn
, ds_cstr(&results
));
5050 ds_destroy(&results
);
5054 ofproto_unixctl_init(void)
5056 static bool registered
;
5062 unixctl_command_register("ofproto/list", "", 0, 0,
5063 ofproto_unixctl_list
, NULL
);
5066 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
5068 * This is deprecated. It is only for compatibility with broken device drivers
5069 * in old versions of Linux that do not properly support VLANs when VLAN
5070 * devices are not used. When broken device drivers are no longer in
5071 * widespread use, we will delete these interfaces. */
5073 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
5074 * (exactly) by an OpenFlow rule in 'ofproto'. */
5076 ofproto_get_vlan_usage(struct ofproto
*ofproto
, unsigned long int *vlan_bitmap
)
5078 const struct oftable
*oftable
;
5080 free(ofproto
->vlan_bitmap
);
5081 ofproto
->vlan_bitmap
= bitmap_allocate(4096);
5082 ofproto
->vlans_changed
= false;
5084 OFPROTO_FOR_EACH_TABLE (oftable
, ofproto
) {
5085 const struct cls_table
*table
;
5087 HMAP_FOR_EACH (table
, hmap_node
, &oftable
->cls
.tables
) {
5088 if (minimask_get_vid_mask(&table
->mask
) == VLAN_VID_MASK
) {
5089 const struct cls_rule
*rule
;
5091 HMAP_FOR_EACH (rule
, hmap_node
, &table
->rules
) {
5092 uint16_t vid
= miniflow_get_vid(&rule
->match
.flow
);
5093 bitmap_set1(vlan_bitmap
, vid
);
5094 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
5101 /* Returns true if new VLANs have come into use by the flow table since the
5102 * last call to ofproto_get_vlan_usage().
5104 * We don't track when old VLANs stop being used. */
5106 ofproto_has_vlan_usage_changed(const struct ofproto
*ofproto
)
5108 return ofproto
->vlans_changed
;
5111 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
5112 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
5113 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
5114 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
5115 * then the VLAN device is un-enslaved. */
5117 ofproto_port_set_realdev(struct ofproto
*ofproto
, ofp_port_t vlandev_ofp_port
,
5118 ofp_port_t realdev_ofp_port
, int vid
)
5120 struct ofport
*ofport
;
5123 ovs_assert(vlandev_ofp_port
!= realdev_ofp_port
);
5125 ofport
= ofproto_get_port(ofproto
, vlandev_ofp_port
);
5127 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16
,
5128 ofproto
->name
, vlandev_ofp_port
);
5132 if (!ofproto
->ofproto_class
->set_realdev
) {
5133 if (!vlandev_ofp_port
) {
5136 VLOG_WARN("%s: vlan splinters not supported", ofproto
->name
);
5140 error
= ofproto
->ofproto_class
->set_realdev(ofport
, realdev_ofp_port
, vid
);
5142 VLOG_WARN("%s: setting realdev on port %"PRIu16
" (%s) failed (%s)",
5143 ofproto
->name
, vlandev_ofp_port
,
5144 netdev_get_name(ofport
->netdev
), strerror(error
));