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 static bool handle_openflow(struct ofconn
*, const struct ofpbuf
*);
203 static enum ofperr
handle_flow_mod__(struct ofproto
*, struct ofconn
*,
204 const struct ofputil_flow_mod
*,
205 const struct ofp_header
*);
206 static void calc_duration(long long int start
, long long int now
,
207 uint32_t *sec
, uint32_t *nsec
);
210 static uint64_t pick_datapath_id(const struct ofproto
*);
211 static uint64_t pick_fallback_dpid(void);
212 static void ofproto_destroy__(struct ofproto
*);
213 static void update_mtu(struct ofproto
*, struct ofport
*);
216 static void ofproto_unixctl_init(void);
218 /* All registered ofproto classes, in probe order. */
219 static const struct ofproto_class
**ofproto_classes
;
220 static size_t n_ofproto_classes
;
221 static size_t allocated_ofproto_classes
;
223 unsigned flow_eviction_threshold
= OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT
;
225 /* Map from datapath name to struct ofproto, for use by unixctl commands. */
226 static struct hmap all_ofprotos
= HMAP_INITIALIZER(&all_ofprotos
);
228 /* Initial mappings of port to OpenFlow number mappings. */
229 static struct shash init_ofp_ports
= SHASH_INITIALIZER(&init_ofp_ports
);
231 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
233 /* The default value of true waits for flow restore. */
234 static bool flow_restore_wait
= true;
236 /* Must be called to initialize the ofproto library.
238 * The caller may pass in 'iface_hints', which contains an shash of
239 * "iface_hint" elements indexed by the interface's name. The provider
240 * may use these hints to describe the startup configuration in order to
241 * reinitialize its state. The caller owns the provided data, so a
242 * provider will make copies of anything required. An ofproto provider
243 * will remove any existing state that is not described by the hint, and
244 * may choose to remove it all. */
246 ofproto_init(const struct shash
*iface_hints
)
248 struct shash_node
*node
;
251 ofproto_class_register(&ofproto_dpif_class
);
253 /* Make a local copy, since we don't own 'iface_hints' elements. */
254 SHASH_FOR_EACH(node
, iface_hints
) {
255 const struct iface_hint
*orig_hint
= node
->data
;
256 struct iface_hint
*new_hint
= xmalloc(sizeof *new_hint
);
257 const char *br_type
= ofproto_normalize_type(orig_hint
->br_type
);
259 new_hint
->br_name
= xstrdup(orig_hint
->br_name
);
260 new_hint
->br_type
= xstrdup(br_type
);
261 new_hint
->ofp_port
= orig_hint
->ofp_port
;
263 shash_add(&init_ofp_ports
, node
->name
, new_hint
);
266 for (i
= 0; i
< n_ofproto_classes
; i
++) {
267 ofproto_classes
[i
]->init(&init_ofp_ports
);
271 /* 'type' should be a normalized datapath type, as returned by
272 * ofproto_normalize_type(). Returns the corresponding ofproto_class
273 * structure, or a null pointer if there is none registered for 'type'. */
274 static const struct ofproto_class
*
275 ofproto_class_find__(const char *type
)
279 for (i
= 0; i
< n_ofproto_classes
; i
++) {
280 const struct ofproto_class
*class = ofproto_classes
[i
];
285 class->enumerate_types(&types
);
286 found
= sset_contains(&types
, type
);
287 sset_destroy(&types
);
293 VLOG_WARN("unknown datapath type %s", type
);
297 /* Registers a new ofproto class. After successful registration, new ofprotos
298 * of that type can be created using ofproto_create(). */
300 ofproto_class_register(const struct ofproto_class
*new_class
)
304 for (i
= 0; i
< n_ofproto_classes
; i
++) {
305 if (ofproto_classes
[i
] == new_class
) {
310 if (n_ofproto_classes
>= allocated_ofproto_classes
) {
311 ofproto_classes
= x2nrealloc(ofproto_classes
,
312 &allocated_ofproto_classes
,
313 sizeof *ofproto_classes
);
315 ofproto_classes
[n_ofproto_classes
++] = new_class
;
319 /* Unregisters a datapath provider. 'type' must have been previously
320 * registered and not currently be in use by any ofprotos. After
321 * unregistration new datapaths of that type cannot be opened using
322 * ofproto_create(). */
324 ofproto_class_unregister(const struct ofproto_class
*class)
328 for (i
= 0; i
< n_ofproto_classes
; i
++) {
329 if (ofproto_classes
[i
] == class) {
330 for (i
++; i
< n_ofproto_classes
; i
++) {
331 ofproto_classes
[i
- 1] = ofproto_classes
[i
];
337 VLOG_WARN("attempted to unregister an ofproto class that is not "
342 /* Clears 'types' and enumerates all registered ofproto types into it. The
343 * caller must first initialize the sset. */
345 ofproto_enumerate_types(struct sset
*types
)
349 for (i
= 0; i
< n_ofproto_classes
; i
++) {
350 ofproto_classes
[i
]->enumerate_types(types
);
354 /* Returns the fully spelled out name for the given ofproto 'type'.
356 * Normalized type string can be compared with strcmp(). Unnormalized type
357 * string might be the same even if they have different spellings. */
359 ofproto_normalize_type(const char *type
)
361 return type
&& type
[0] ? type
: "system";
364 /* Clears 'names' and enumerates the names of all known created ofprotos with
365 * the given 'type'. The caller must first initialize the sset. Returns 0 if
366 * successful, otherwise a positive errno value.
368 * Some kinds of datapaths might not be practically enumerable. This is not
369 * considered an error. */
371 ofproto_enumerate_names(const char *type
, struct sset
*names
)
373 const struct ofproto_class
*class = ofproto_class_find__(type
);
374 return class ? class->enumerate_names(type
, names
) : EAFNOSUPPORT
;
378 ofproto_create(const char *datapath_name
, const char *datapath_type
,
379 struct ofproto
**ofprotop
)
381 const struct ofproto_class
*class;
382 struct ofproto
*ofproto
;
388 ofproto_unixctl_init();
390 datapath_type
= ofproto_normalize_type(datapath_type
);
391 class = ofproto_class_find__(datapath_type
);
393 VLOG_WARN("could not create datapath %s of unknown type %s",
394 datapath_name
, datapath_type
);
398 ofproto
= class->alloc();
400 VLOG_ERR("failed to allocate datapath %s of type %s",
401 datapath_name
, datapath_type
);
406 memset(ofproto
, 0, sizeof *ofproto
);
407 ofproto
->ofproto_class
= class;
408 ofproto
->name
= xstrdup(datapath_name
);
409 ofproto
->type
= xstrdup(datapath_type
);
410 hmap_insert(&all_ofprotos
, &ofproto
->hmap_node
,
411 hash_string(ofproto
->name
, 0));
412 ofproto
->datapath_id
= 0;
413 ofproto
->forward_bpdu
= false;
414 ofproto
->fallback_dpid
= pick_fallback_dpid();
415 ofproto
->mfr_desc
= NULL
;
416 ofproto
->hw_desc
= NULL
;
417 ofproto
->sw_desc
= NULL
;
418 ofproto
->serial_desc
= NULL
;
419 ofproto
->dp_desc
= NULL
;
420 ofproto
->frag_handling
= OFPC_FRAG_NORMAL
;
421 hmap_init(&ofproto
->ports
);
422 shash_init(&ofproto
->port_by_name
);
423 simap_init(&ofproto
->ofp_requests
);
424 ofproto
->max_ports
= OFPP_MAX
;
425 ofproto
->tables
= NULL
;
426 ofproto
->n_tables
= 0;
427 hindex_init(&ofproto
->cookies
);
428 list_init(&ofproto
->expirable
);
429 ofproto
->connmgr
= connmgr_create(ofproto
, datapath_name
, datapath_name
);
430 ofproto
->state
= S_OPENFLOW
;
431 list_init(&ofproto
->pending
);
432 ofproto
->n_pending
= 0;
433 hmap_init(&ofproto
->deletions
);
434 ofproto
->n_add
= ofproto
->n_delete
= ofproto
->n_modify
= 0;
435 ofproto
->first_op
= ofproto
->last_op
= LLONG_MIN
;
436 ofproto
->next_op_report
= LLONG_MAX
;
437 ofproto
->op_backoff
= LLONG_MIN
;
438 ofproto
->vlan_bitmap
= NULL
;
439 ofproto
->vlans_changed
= false;
440 ofproto
->min_mtu
= INT_MAX
;
442 error
= ofproto
->ofproto_class
->construct(ofproto
);
444 VLOG_ERR("failed to open datapath %s: %s",
445 datapath_name
, strerror(error
));
446 ofproto_destroy__(ofproto
);
450 /* The "max_ports" member should have been set by ->construct(ofproto).
451 * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */
452 ofproto
->ofp_port_ids
= bitmap_allocate(ofp_to_u16(ofproto
->max_ports
));
453 bitmap_set1(ofproto
->ofp_port_ids
, 0);
455 /* Check that hidden tables, if any, are at the end. */
456 ovs_assert(ofproto
->n_tables
);
457 for (i
= 0; i
+ 1 < ofproto
->n_tables
; i
++) {
458 enum oftable_flags flags
= ofproto
->tables
[i
].flags
;
459 enum oftable_flags next_flags
= ofproto
->tables
[i
+ 1].flags
;
461 ovs_assert(!(flags
& OFTABLE_HIDDEN
) || next_flags
& OFTABLE_HIDDEN
);
464 ofproto
->datapath_id
= pick_datapath_id(ofproto
);
471 /* Must be called (only) by an ofproto implementation in its constructor
472 * function. See the large comment on 'construct' in struct ofproto_class for
475 ofproto_init_tables(struct ofproto
*ofproto
, int n_tables
)
477 struct oftable
*table
;
479 ovs_assert(!ofproto
->n_tables
);
480 ovs_assert(n_tables
>= 1 && n_tables
<= 255);
482 ofproto
->n_tables
= n_tables
;
483 ofproto
->tables
= xmalloc(n_tables
* sizeof *ofproto
->tables
);
484 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
489 /* To be optionally called (only) by an ofproto implementation in its
490 * constructor function. See the large comment on 'construct' in struct
491 * ofproto_class for details.
493 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
494 * will then ensure that actions passed into the ofproto implementation will
495 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
496 * function is not called, there will be no such restriction.
498 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
499 * the 'max_ports' restriction. */
501 ofproto_init_max_ports(struct ofproto
*ofproto
, ofp_port_t max_ports
)
503 ovs_assert(ofp_to_u16(max_ports
) <= ofp_to_u16(OFPP_MAX
));
504 ofproto
->max_ports
= max_ports
;
508 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
510 return ofproto
->datapath_id
;
514 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
516 uint64_t old_dpid
= p
->datapath_id
;
517 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
518 if (p
->datapath_id
!= old_dpid
) {
519 /* Force all active connections to reconnect, since there is no way to
520 * notify a controller that the datapath ID has changed. */
521 ofproto_reconnect_controllers(p
);
526 ofproto_set_controllers(struct ofproto
*p
,
527 const struct ofproto_controller
*controllers
,
528 size_t n_controllers
, uint32_t allowed_versions
)
530 connmgr_set_controllers(p
->connmgr
, controllers
, n_controllers
,
535 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
537 connmgr_set_fail_mode(p
->connmgr
, fail_mode
);
540 /* Drops the connections between 'ofproto' and all of its controllers, forcing
541 * them to reconnect. */
543 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
545 connmgr_reconnect(ofproto
->connmgr
);
548 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
549 * in-band control should guarantee access, in the same way that in-band
550 * control guarantees access to OpenFlow controllers. */
552 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
553 const struct sockaddr_in
*extras
, size_t n
)
555 connmgr_set_extra_in_band_remotes(ofproto
->connmgr
, extras
, n
);
558 /* Sets the OpenFlow queue used by flows set up by in-band control on
559 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
560 * flows will use the default queue. */
562 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
564 connmgr_set_in_band_queue(ofproto
->connmgr
, queue_id
);
567 /* Sets the number of flows at which eviction from the kernel flow table
570 ofproto_set_flow_eviction_threshold(unsigned threshold
)
572 flow_eviction_threshold
= MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN
,
576 /* If forward_bpdu is true, the NORMAL action will forward frames with
577 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
578 * the NORMAL action will drop these frames. */
580 ofproto_set_forward_bpdu(struct ofproto
*ofproto
, bool forward_bpdu
)
582 bool old_val
= ofproto
->forward_bpdu
;
583 ofproto
->forward_bpdu
= forward_bpdu
;
584 if (old_val
!= ofproto
->forward_bpdu
) {
585 if (ofproto
->ofproto_class
->forward_bpdu_changed
) {
586 ofproto
->ofproto_class
->forward_bpdu_changed(ofproto
);
591 /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
592 * 'idle_time', in seconds, and the maximum number of MAC table entries to
595 ofproto_set_mac_table_config(struct ofproto
*ofproto
, unsigned idle_time
,
598 if (ofproto
->ofproto_class
->set_mac_table_config
) {
599 ofproto
->ofproto_class
->set_mac_table_config(ofproto
, idle_time
,
605 ofproto_set_dp_desc(struct ofproto
*p
, const char *dp_desc
)
608 p
->dp_desc
= dp_desc
? xstrdup(dp_desc
) : NULL
;
612 ofproto_set_snoops(struct ofproto
*ofproto
, const struct sset
*snoops
)
614 return connmgr_set_snoops(ofproto
->connmgr
, snoops
);
618 ofproto_set_netflow(struct ofproto
*ofproto
,
619 const struct netflow_options
*nf_options
)
621 if (nf_options
&& sset_is_empty(&nf_options
->collectors
)) {
625 if (ofproto
->ofproto_class
->set_netflow
) {
626 return ofproto
->ofproto_class
->set_netflow(ofproto
, nf_options
);
628 return nf_options
? EOPNOTSUPP
: 0;
633 ofproto_set_sflow(struct ofproto
*ofproto
,
634 const struct ofproto_sflow_options
*oso
)
636 if (oso
&& sset_is_empty(&oso
->targets
)) {
640 if (ofproto
->ofproto_class
->set_sflow
) {
641 return ofproto
->ofproto_class
->set_sflow(ofproto
, oso
);
643 return oso
? EOPNOTSUPP
: 0;
648 ofproto_set_ipfix(struct ofproto
*ofproto
,
649 const struct ofproto_ipfix_bridge_exporter_options
*bo
,
650 const struct ofproto_ipfix_flow_exporter_options
*fo
,
653 if (ofproto
->ofproto_class
->set_ipfix
) {
654 return ofproto
->ofproto_class
->set_ipfix(ofproto
, bo
, fo
, n_fo
);
656 return (bo
|| fo
) ? EOPNOTSUPP
: 0;
661 ofproto_set_flow_restore_wait(bool flow_restore_wait_db
)
663 flow_restore_wait
= flow_restore_wait_db
;
667 ofproto_get_flow_restore_wait(void)
669 return flow_restore_wait
;
673 /* Spanning Tree Protocol (STP) configuration. */
675 /* Configures STP on 'ofproto' using the settings defined in 's'. If
676 * 's' is NULL, disables STP.
678 * Returns 0 if successful, otherwise a positive errno value. */
680 ofproto_set_stp(struct ofproto
*ofproto
,
681 const struct ofproto_stp_settings
*s
)
683 return (ofproto
->ofproto_class
->set_stp
684 ? ofproto
->ofproto_class
->set_stp(ofproto
, s
)
688 /* Retrieves STP status of 'ofproto' and stores it in 's'. If the
689 * 'enabled' member of 's' is false, then the other members are not
692 * Returns 0 if successful, otherwise a positive errno value. */
694 ofproto_get_stp_status(struct ofproto
*ofproto
,
695 struct ofproto_stp_status
*s
)
697 return (ofproto
->ofproto_class
->get_stp_status
698 ? ofproto
->ofproto_class
->get_stp_status(ofproto
, s
)
702 /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
703 * in 's'. The caller is responsible for assigning STP port numbers
704 * (using the 'port_num' member in the range of 1 through 255, inclusive)
705 * and ensuring there are no duplicates. If the 's' is NULL, then STP
706 * is disabled on the port.
708 * Returns 0 if successful, otherwise a positive errno value.*/
710 ofproto_port_set_stp(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
711 const struct ofproto_port_stp_settings
*s
)
713 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
715 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16
,
716 ofproto
->name
, ofp_port
);
720 return (ofproto
->ofproto_class
->set_stp_port
721 ? ofproto
->ofproto_class
->set_stp_port(ofport
, s
)
725 /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
726 * 's'. If the 'enabled' member in 's' is false, then the other members
727 * are not meaningful.
729 * Returns 0 if successful, otherwise a positive errno value.*/
731 ofproto_port_get_stp_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
732 struct ofproto_port_stp_status
*s
)
734 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
736 VLOG_WARN_RL(&rl
, "%s: cannot get STP status on nonexistent "
737 "port %"PRIu16
, ofproto
->name
, ofp_port
);
741 return (ofproto
->ofproto_class
->get_stp_port_status
742 ? ofproto
->ofproto_class
->get_stp_port_status(ofport
, s
)
746 /* Queue DSCP configuration. */
748 /* Registers meta-data associated with the 'n_qdscp' Qualities of Service
749 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
750 * to implement QoS. Instead, it is used to implement features which require
751 * knowledge of what queues exist on a port, and some basic information about
754 * Returns 0 if successful, otherwise a positive errno value. */
756 ofproto_port_set_queues(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
757 const struct ofproto_port_queue
*queues
,
760 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
763 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16
,
764 ofproto
->name
, ofp_port
);
768 return (ofproto
->ofproto_class
->set_queues
769 ? ofproto
->ofproto_class
->set_queues(ofport
, queues
, n_queues
)
773 /* Connectivity Fault Management configuration. */
775 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
777 ofproto_port_clear_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
779 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
780 if (ofport
&& ofproto
->ofproto_class
->set_cfm
) {
781 ofproto
->ofproto_class
->set_cfm(ofport
, NULL
);
785 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
786 * basic configuration from the configuration members in 'cfm', and the remote
787 * maintenance point ID from remote_mpid. Ignores the statistics members of
790 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
792 ofproto_port_set_cfm(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
793 const struct cfm_settings
*s
)
795 struct ofport
*ofport
;
798 ofport
= ofproto_get_port(ofproto
, ofp_port
);
800 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16
,
801 ofproto
->name
, ofp_port
);
805 /* XXX: For configuration simplicity, we only support one remote_mpid
806 * outside of the CFM module. It's not clear if this is the correct long
807 * term solution or not. */
808 error
= (ofproto
->ofproto_class
->set_cfm
809 ? ofproto
->ofproto_class
->set_cfm(ofport
, s
)
812 VLOG_WARN("%s: CFM configuration on port %"PRIu16
" (%s) failed (%s)",
813 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
818 /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
819 * 'ofproto' does not have a port 'ofp_port'. */
821 ofproto_port_set_bfd(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
822 const struct smap
*cfg
)
824 struct ofport
*ofport
;
827 ofport
= ofproto_get_port(ofproto
, ofp_port
);
829 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16
,
830 ofproto
->name
, ofp_port
);
834 error
= (ofproto
->ofproto_class
->set_bfd
835 ? ofproto
->ofproto_class
->set_bfd(ofport
, cfg
)
838 VLOG_WARN("%s: bfd configuration on port %"PRIu16
" (%s) failed (%s)",
839 ofproto
->name
, ofp_port
, netdev_get_name(ofport
->netdev
),
844 /* Populates 'status' with key value pairs indicating the status of the BFD
845 * session on 'ofp_port'. This information is intended to be populated in the
846 * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in
849 ofproto_port_get_bfd_status(struct ofproto
*ofproto
, ofp_port_t ofp_port
,
852 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
853 return (ofport
&& ofproto
->ofproto_class
->get_bfd_status
854 ? ofproto
->ofproto_class
->get_bfd_status(ofport
, status
)
858 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
859 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
860 * 0 if LACP partner information is not current (generally indicating a
861 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
863 ofproto_port_is_lacp_current(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
865 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
866 return (ofport
&& ofproto
->ofproto_class
->port_is_lacp_current
867 ? ofproto
->ofproto_class
->port_is_lacp_current(ofport
)
873 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
874 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
875 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
876 * configuration plus, if there is more than one slave, a bonding
879 * If 'aux' is already registered then this function updates its configuration
880 * to 's'. Otherwise, this function registers a new bundle.
882 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
885 ofproto_bundle_register(struct ofproto
*ofproto
, void *aux
,
886 const struct ofproto_bundle_settings
*s
)
888 return (ofproto
->ofproto_class
->bundle_set
889 ? ofproto
->ofproto_class
->bundle_set(ofproto
, aux
, s
)
893 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
894 * If no such bundle has been registered, this has no effect. */
896 ofproto_bundle_unregister(struct ofproto
*ofproto
, void *aux
)
898 return ofproto_bundle_register(ofproto
, aux
, NULL
);
902 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
903 * If 'aux' is already registered then this function updates its configuration
904 * to 's'. Otherwise, this function registers a new mirror. */
906 ofproto_mirror_register(struct ofproto
*ofproto
, void *aux
,
907 const struct ofproto_mirror_settings
*s
)
909 return (ofproto
->ofproto_class
->mirror_set
910 ? ofproto
->ofproto_class
->mirror_set(ofproto
, aux
, s
)
914 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
915 * If no mirror has been registered, this has no effect. */
917 ofproto_mirror_unregister(struct ofproto
*ofproto
, void *aux
)
919 return ofproto_mirror_register(ofproto
, aux
, NULL
);
922 /* Retrieves statistics from mirror associated with client data pointer
923 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
924 * 'bytes', respectively. If a particular counters is not supported,
925 * the appropriate argument is set to UINT64_MAX. */
927 ofproto_mirror_get_stats(struct ofproto
*ofproto
, void *aux
,
928 uint64_t *packets
, uint64_t *bytes
)
930 if (!ofproto
->ofproto_class
->mirror_get_stats
) {
931 *packets
= *bytes
= UINT64_MAX
;
935 return ofproto
->ofproto_class
->mirror_get_stats(ofproto
, aux
,
939 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
940 * which all packets are flooded, instead of using MAC learning. If
941 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
943 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
946 ofproto_set_flood_vlans(struct ofproto
*ofproto
, unsigned long *flood_vlans
)
948 return (ofproto
->ofproto_class
->set_flood_vlans
949 ? ofproto
->ofproto_class
->set_flood_vlans(ofproto
, flood_vlans
)
953 /* Returns true if 'aux' is a registered bundle that is currently in use as the
954 * output for a mirror. */
956 ofproto_is_mirror_output_bundle(const struct ofproto
*ofproto
, void *aux
)
958 return (ofproto
->ofproto_class
->is_mirror_output_bundle
959 ? ofproto
->ofproto_class
->is_mirror_output_bundle(ofproto
, aux
)
963 /* Configuration of OpenFlow tables. */
965 /* Returns the number of OpenFlow tables in 'ofproto'. */
967 ofproto_get_n_tables(const struct ofproto
*ofproto
)
969 return ofproto
->n_tables
;
972 /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
973 * settings from 's'. 'table_id' must be in the range 0 through the number of
974 * OpenFlow tables in 'ofproto' minus 1, inclusive.
976 * For read-only tables, only the name may be configured. */
978 ofproto_configure_table(struct ofproto
*ofproto
, int table_id
,
979 const struct ofproto_table_settings
*s
)
981 struct oftable
*table
;
983 ovs_assert(table_id
>= 0 && table_id
< ofproto
->n_tables
);
984 table
= &ofproto
->tables
[table_id
];
986 oftable_set_name(table
, s
->name
);
988 if (table
->flags
& OFTABLE_READONLY
) {
993 oftable_enable_eviction(table
, s
->groups
, s
->n_groups
);
995 oftable_disable_eviction(table
);
998 table
->max_flows
= s
->max_flows
;
999 if (classifier_count(&table
->cls
) > table
->max_flows
1000 && table
->eviction_fields
) {
1001 /* 'table' contains more flows than allowed. We might not be able to
1002 * evict them right away because of the asynchronous nature of flow
1003 * table changes. Schedule eviction for later. */
1004 switch (ofproto
->state
) {
1006 ofproto
->state
= S_EVICT
;
1010 /* We're already deleting flows, nothing more to do. */
1017 ofproto_has_snoops(const struct ofproto
*ofproto
)
1019 return connmgr_has_snoops(ofproto
->connmgr
);
1023 ofproto_get_snoops(const struct ofproto
*ofproto
, struct sset
*snoops
)
1025 connmgr_get_snoops(ofproto
->connmgr
, snoops
);
1029 ofproto_flush__(struct ofproto
*ofproto
)
1031 struct ofopgroup
*group
;
1032 struct oftable
*table
;
1034 if (ofproto
->ofproto_class
->flush
) {
1035 ofproto
->ofproto_class
->flush(ofproto
);
1038 group
= ofopgroup_create_unattached(ofproto
);
1039 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1040 struct rule
*rule
, *next_rule
;
1041 struct cls_cursor cursor
;
1043 if (table
->flags
& OFTABLE_HIDDEN
) {
1047 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
1048 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1049 if (!rule
->pending
) {
1050 ofoperation_create(group
, rule
, OFOPERATION_DELETE
,
1052 oftable_remove_rule(rule
);
1053 ofproto
->ofproto_class
->rule_destruct(rule
);
1057 ofopgroup_submit(group
);
1061 ofproto_destroy__(struct ofproto
*ofproto
)
1063 struct oftable
*table
;
1065 ovs_assert(list_is_empty(&ofproto
->pending
));
1066 ovs_assert(!ofproto
->n_pending
);
1068 connmgr_destroy(ofproto
->connmgr
);
1070 hmap_remove(&all_ofprotos
, &ofproto
->hmap_node
);
1071 free(ofproto
->name
);
1072 free(ofproto
->type
);
1073 free(ofproto
->mfr_desc
);
1074 free(ofproto
->hw_desc
);
1075 free(ofproto
->sw_desc
);
1076 free(ofproto
->serial_desc
);
1077 free(ofproto
->dp_desc
);
1078 hmap_destroy(&ofproto
->ports
);
1079 shash_destroy(&ofproto
->port_by_name
);
1080 bitmap_free(ofproto
->ofp_port_ids
);
1081 simap_destroy(&ofproto
->ofp_requests
);
1083 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1084 oftable_destroy(table
);
1086 free(ofproto
->tables
);
1088 hmap_destroy(&ofproto
->deletions
);
1090 free(ofproto
->vlan_bitmap
);
1092 ofproto
->ofproto_class
->dealloc(ofproto
);
1096 ofproto_destroy(struct ofproto
*p
)
1098 struct ofport
*ofport
, *next_ofport
;
1105 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1106 ofport_destroy(ofport
);
1109 p
->ofproto_class
->destruct(p
);
1110 ofproto_destroy__(p
);
1113 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1114 * kernel datapath, for example, this destroys the datapath in the kernel, and
1115 * with the netdev-based datapath, it tears down the data structures that
1116 * represent the datapath.
1118 * The datapath should not be currently open as an ofproto. */
1120 ofproto_delete(const char *name
, const char *type
)
1122 const struct ofproto_class
*class = ofproto_class_find__(type
);
1123 return (!class ? EAFNOSUPPORT
1124 : !class->del
? EACCES
1125 : class->del(type
, name
));
1129 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1131 if (error
== ENOBUFS
) {
1132 reinit_ports(ofproto
);
1133 } else if (!error
) {
1134 update_port(ofproto
, devname
);
1140 ofproto_type_run(const char *datapath_type
)
1142 const struct ofproto_class
*class;
1145 datapath_type
= ofproto_normalize_type(datapath_type
);
1146 class = ofproto_class_find__(datapath_type
);
1148 error
= class->type_run
? class->type_run(datapath_type
) : 0;
1149 if (error
&& error
!= EAGAIN
) {
1150 VLOG_ERR_RL(&rl
, "%s: type_run failed (%s)",
1151 datapath_type
, strerror(error
));
1157 ofproto_type_run_fast(const char *datapath_type
)
1159 const struct ofproto_class
*class;
1162 datapath_type
= ofproto_normalize_type(datapath_type
);
1163 class = ofproto_class_find__(datapath_type
);
1165 error
= class->type_run_fast
? class->type_run_fast(datapath_type
) : 0;
1166 if (error
&& error
!= EAGAIN
) {
1167 VLOG_ERR_RL(&rl
, "%s: type_run_fast failed (%s)",
1168 datapath_type
, strerror(error
));
1174 ofproto_type_wait(const char *datapath_type
)
1176 const struct ofproto_class
*class;
1178 datapath_type
= ofproto_normalize_type(datapath_type
);
1179 class = ofproto_class_find__(datapath_type
);
1181 if (class->type_wait
) {
1182 class->type_wait(datapath_type
);
1187 ofproto_run(struct ofproto
*p
)
1189 struct sset changed_netdevs
;
1190 const char *changed_netdev
;
1191 struct ofport
*ofport
;
1194 error
= p
->ofproto_class
->run(p
);
1195 if (error
&& error
!= EAGAIN
) {
1196 VLOG_ERR_RL(&rl
, "%s: run failed (%s)", p
->name
, strerror(error
));
1199 if (p
->ofproto_class
->port_poll
) {
1202 while ((error
= p
->ofproto_class
->port_poll(p
, &devname
)) != EAGAIN
) {
1203 process_port_change(p
, error
, devname
);
1207 /* Update OpenFlow port status for any port whose netdev has changed.
1209 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1210 * destroyed, so it's not safe to update ports directly from the
1211 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1212 * need this two-phase approach. */
1213 sset_init(&changed_netdevs
);
1214 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1215 unsigned int change_seq
= netdev_change_seq(ofport
->netdev
);
1216 if (ofport
->change_seq
!= change_seq
) {
1217 ofport
->change_seq
= change_seq
;
1218 sset_add(&changed_netdevs
, netdev_get_name(ofport
->netdev
));
1221 SSET_FOR_EACH (changed_netdev
, &changed_netdevs
) {
1222 update_port(p
, changed_netdev
);
1224 sset_destroy(&changed_netdevs
);
1228 connmgr_run(p
->connmgr
, handle_openflow
);
1232 connmgr_run(p
->connmgr
, NULL
);
1234 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1235 p
->state
= S_OPENFLOW
;
1240 connmgr_run(p
->connmgr
, NULL
);
1242 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1243 connmgr_flushed(p
->connmgr
);
1244 p
->state
= S_OPENFLOW
;
1252 if (time_msec() >= p
->next_op_report
) {
1253 long long int ago
= (time_msec() - p
->first_op
) / 1000;
1254 long long int interval
= (p
->last_op
- p
->first_op
) / 1000;
1258 ds_put_format(&s
, "%d flow_mods ",
1259 p
->n_add
+ p
->n_delete
+ p
->n_modify
);
1260 if (interval
== ago
) {
1261 ds_put_format(&s
, "in the last %lld s", ago
);
1262 } else if (interval
) {
1263 ds_put_format(&s
, "in the %lld s starting %lld s ago",
1266 ds_put_format(&s
, "%lld s ago", ago
);
1269 ds_put_cstr(&s
, " (");
1271 ds_put_format(&s
, "%d adds, ", p
->n_add
);
1274 ds_put_format(&s
, "%d deletes, ", p
->n_delete
);
1277 ds_put_format(&s
, "%d modifications, ", p
->n_modify
);
1280 ds_put_char(&s
, ')');
1282 VLOG_INFO("%s: %s", p
->name
, ds_cstr(&s
));
1285 p
->n_add
= p
->n_delete
= p
->n_modify
= 0;
1286 p
->next_op_report
= LLONG_MAX
;
1292 /* Performs periodic activity required by 'ofproto' that needs to be done
1293 * with the least possible latency.
1295 * It makes sense to call this function a couple of times per poll loop, to
1296 * provide a significant performance boost on some benchmarks with the
1297 * ofproto-dpif implementation. */
1299 ofproto_run_fast(struct ofproto
*p
)
1303 error
= p
->ofproto_class
->run_fast
? p
->ofproto_class
->run_fast(p
) : 0;
1304 if (error
&& error
!= EAGAIN
) {
1305 VLOG_ERR_RL(&rl
, "%s: fastpath run failed (%s)",
1306 p
->name
, strerror(error
));
1312 ofproto_wait(struct ofproto
*p
)
1314 struct ofport
*ofport
;
1316 p
->ofproto_class
->wait(p
);
1317 if (p
->ofproto_class
->port_poll_wait
) {
1318 p
->ofproto_class
->port_poll_wait(p
);
1321 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1322 if (ofport
->change_seq
!= netdev_change_seq(ofport
->netdev
)) {
1323 poll_immediate_wake();
1329 connmgr_wait(p
->connmgr
, true);
1334 connmgr_wait(p
->connmgr
, false);
1335 if (list_is_empty(&p
->pending
) && hmap_is_empty(&p
->deletions
)) {
1336 poll_immediate_wake();
1343 ofproto_is_alive(const struct ofproto
*p
)
1345 return connmgr_has_controllers(p
->connmgr
);
1348 /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1349 * memory_report(). */
1351 ofproto_get_memory_usage(const struct ofproto
*ofproto
, struct simap
*usage
)
1353 const struct oftable
*table
;
1354 unsigned int n_rules
;
1356 simap_increase(usage
, "ports", hmap_count(&ofproto
->ports
));
1357 simap_increase(usage
, "ops",
1358 ofproto
->n_pending
+ hmap_count(&ofproto
->deletions
));
1361 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
1362 n_rules
+= classifier_count(&table
->cls
);
1364 simap_increase(usage
, "rules", n_rules
);
1366 if (ofproto
->ofproto_class
->get_memory_usage
) {
1367 ofproto
->ofproto_class
->get_memory_usage(ofproto
, usage
);
1370 connmgr_get_memory_usage(ofproto
->connmgr
, usage
);
1374 ofproto_get_ofproto_controller_info(const struct ofproto
*ofproto
,
1377 connmgr_get_controller_info(ofproto
->connmgr
, info
);
1381 ofproto_free_ofproto_controller_info(struct shash
*info
)
1383 connmgr_free_controller_info(info
);
1386 /* Makes a deep copy of 'old' into 'port'. */
1388 ofproto_port_clone(struct ofproto_port
*port
, const struct ofproto_port
*old
)
1390 port
->name
= xstrdup(old
->name
);
1391 port
->type
= xstrdup(old
->type
);
1392 port
->ofp_port
= old
->ofp_port
;
1395 /* Frees memory allocated to members of 'ofproto_port'.
1397 * Do not call this function on an ofproto_port obtained from
1398 * ofproto_port_dump_next(): that function retains ownership of the data in the
1401 ofproto_port_destroy(struct ofproto_port
*ofproto_port
)
1403 free(ofproto_port
->name
);
1404 free(ofproto_port
->type
);
1407 /* Initializes 'dump' to begin dumping the ports in an ofproto.
1409 * This function provides no status indication. An error status for the entire
1410 * dump operation is provided when it is completed by calling
1411 * ofproto_port_dump_done().
1414 ofproto_port_dump_start(struct ofproto_port_dump
*dump
,
1415 const struct ofproto
*ofproto
)
1417 dump
->ofproto
= ofproto
;
1418 dump
->error
= ofproto
->ofproto_class
->port_dump_start(ofproto
,
1422 /* Attempts to retrieve another port from 'dump', which must have been created
1423 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1424 * 'port' and returns true. On failure, returns false.
1426 * Failure might indicate an actual error or merely that the last port has been
1427 * dumped. An error status for the entire dump operation is provided when it
1428 * is completed by calling ofproto_port_dump_done().
1430 * The ofproto owns the data stored in 'port'. It will remain valid until at
1431 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1432 * ofproto_port_dump_done(). */
1434 ofproto_port_dump_next(struct ofproto_port_dump
*dump
,
1435 struct ofproto_port
*port
)
1437 const struct ofproto
*ofproto
= dump
->ofproto
;
1443 dump
->error
= ofproto
->ofproto_class
->port_dump_next(ofproto
, dump
->state
,
1446 ofproto
->ofproto_class
->port_dump_done(ofproto
, dump
->state
);
1452 /* Completes port table dump operation 'dump', which must have been created
1453 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1454 * error-free, otherwise a positive errno value describing the problem. */
1456 ofproto_port_dump_done(struct ofproto_port_dump
*dump
)
1458 const struct ofproto
*ofproto
= dump
->ofproto
;
1460 dump
->error
= ofproto
->ofproto_class
->port_dump_done(ofproto
,
1463 return dump
->error
== EOF
? 0 : dump
->error
;
1466 /* Returns the type to pass to netdev_open() when a datapath of type
1467 * 'datapath_type' has a port of type 'port_type', for a few special
1468 * cases when a netdev type differs from a port type. For example, when
1469 * using the userspace datapath, a port of type "internal" needs to be
1472 * Returns either 'type' itself or a string literal, which must not be
1475 ofproto_port_open_type(const char *datapath_type
, const char *port_type
)
1477 const struct ofproto_class
*class;
1479 datapath_type
= ofproto_normalize_type(datapath_type
);
1480 class = ofproto_class_find__(datapath_type
);
1485 return (class->port_open_type
1486 ? class->port_open_type(datapath_type
, port_type
)
1490 /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1491 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1492 * the port's OpenFlow port number.
1494 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1495 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1496 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1497 * 'ofp_portp' is non-null). */
1499 ofproto_port_add(struct ofproto
*ofproto
, struct netdev
*netdev
,
1500 ofp_port_t
*ofp_portp
)
1502 ofp_port_t ofp_port
= ofp_portp
? *ofp_portp
: OFPP_NONE
;
1505 error
= ofproto
->ofproto_class
->port_add(ofproto
, netdev
);
1507 const char *netdev_name
= netdev_get_name(netdev
);
1509 simap_put(&ofproto
->ofp_requests
, netdev_name
,
1510 ofp_to_u16(ofp_port
));
1511 update_port(ofproto
, netdev_name
);
1514 struct ofproto_port ofproto_port
;
1516 ofproto_port_query_by_name(ofproto
, netdev_get_name(netdev
),
1518 *ofp_portp
= error
? OFPP_NONE
: ofproto_port
.ofp_port
;
1519 ofproto_port_destroy(&ofproto_port
);
1524 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1525 * initializes '*port' appropriately; on failure, returns a positive errno
1528 * The caller owns the data in 'ofproto_port' and must free it with
1529 * ofproto_port_destroy() when it is no longer needed. */
1531 ofproto_port_query_by_name(const struct ofproto
*ofproto
, const char *devname
,
1532 struct ofproto_port
*port
)
1536 error
= ofproto
->ofproto_class
->port_query_by_name(ofproto
, devname
, port
);
1538 memset(port
, 0, sizeof *port
);
1543 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
1544 * Returns 0 if successful, otherwise a positive errno. */
1546 ofproto_port_del(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1548 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
1549 const char *name
= ofport
? netdev_get_name(ofport
->netdev
) : "<unknown>";
1550 struct simap_node
*ofp_request_node
;
1553 ofp_request_node
= simap_find(&ofproto
->ofp_requests
, name
);
1554 if (ofp_request_node
) {
1555 simap_delete(&ofproto
->ofp_requests
, ofp_request_node
);
1558 error
= ofproto
->ofproto_class
->port_del(ofproto
, ofp_port
);
1559 if (!error
&& ofport
) {
1560 /* 'name' is the netdev's name and update_port() is going to close the
1561 * netdev. Just in case update_port() refers to 'name' after it
1562 * destroys 'ofport', make a copy of it around the update_port()
1564 char *devname
= xstrdup(name
);
1565 update_port(ofproto
, devname
);
1571 /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
1572 * performs the 'n_actions' actions in 'actions'. The new flow will not
1575 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1576 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1577 * controllers; otherwise, it will be hidden.
1579 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
1581 * This is a helper function for in-band control and fail-open. */
1583 ofproto_add_flow(struct ofproto
*ofproto
, const struct match
*match
,
1584 unsigned int priority
,
1585 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
1587 const struct rule
*rule
;
1589 rule
= rule_from_cls_rule(classifier_find_match_exactly(
1590 &ofproto
->tables
[0].cls
, match
, priority
));
1591 if (!rule
|| !ofpacts_equal(rule
->ofpacts
, rule
->ofpacts_len
,
1592 ofpacts
, ofpacts_len
)) {
1593 struct ofputil_flow_mod fm
;
1595 memset(&fm
, 0, sizeof fm
);
1597 fm
.priority
= priority
;
1598 fm
.buffer_id
= UINT32_MAX
;
1599 fm
.ofpacts
= xmemdup(ofpacts
, ofpacts_len
);
1600 fm
.ofpacts_len
= ofpacts_len
;
1601 add_flow(ofproto
, NULL
, &fm
, NULL
);
1606 /* Executes the flow modification specified in 'fm'. Returns 0 on success, an
1607 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
1608 * operation cannot be initiated now but may be retried later.
1610 * This is a helper function for in-band control and fail-open. */
1612 ofproto_flow_mod(struct ofproto
*ofproto
, const struct ofputil_flow_mod
*fm
)
1614 return handle_flow_mod__(ofproto
, NULL
, fm
, NULL
);
1617 /* Searches for a rule with matching criteria exactly equal to 'target' in
1618 * ofproto's table 0 and, if it finds one, deletes it.
1620 * This is a helper function for in-band control and fail-open. */
1622 ofproto_delete_flow(struct ofproto
*ofproto
,
1623 const struct match
*target
, unsigned int priority
)
1627 rule
= rule_from_cls_rule(classifier_find_match_exactly(
1628 &ofproto
->tables
[0].cls
, target
, priority
));
1630 /* No such rule -> success. */
1632 } else if (rule
->pending
) {
1633 /* An operation on the rule is already pending -> failure.
1634 * Caller must retry later if it's important. */
1637 /* Initiate deletion -> success. */
1638 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
1639 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, OFPRR_DELETE
);
1640 oftable_remove_rule(rule
);
1641 ofproto
->ofproto_class
->rule_destruct(rule
);
1642 ofopgroup_submit(group
);
1648 /* Starts the process of deleting all of the flows from all of ofproto's flow
1649 * tables and then reintroducing the flows required by in-band control and
1650 * fail-open. The process will complete in a later call to ofproto_run(). */
1652 ofproto_flush_flows(struct ofproto
*ofproto
)
1654 COVERAGE_INC(ofproto_flush
);
1655 ofproto
->state
= S_FLUSH
;
1659 reinit_ports(struct ofproto
*p
)
1661 struct ofproto_port_dump dump
;
1662 struct sset devnames
;
1663 struct ofport
*ofport
;
1664 struct ofproto_port ofproto_port
;
1665 const char *devname
;
1667 COVERAGE_INC(ofproto_reinit_ports
);
1669 sset_init(&devnames
);
1670 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1671 sset_add(&devnames
, netdev_get_name(ofport
->netdev
));
1673 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
1674 sset_add(&devnames
, ofproto_port
.name
);
1677 SSET_FOR_EACH (devname
, &devnames
) {
1678 update_port(p
, devname
);
1680 sset_destroy(&devnames
);
1684 alloc_ofp_port(struct ofproto
*ofproto
, const char *netdev_name
)
1686 uint16_t max_ports
= ofp_to_u16(ofproto
->max_ports
);
1689 port_idx
= simap_get(&ofproto
->ofp_requests
, netdev_name
);
1691 port_idx
= UINT16_MAX
;
1694 if (port_idx
>= max_ports
1695 || bitmap_is_set(ofproto
->ofp_port_ids
, port_idx
)) {
1696 uint16_t end_port_no
= ofp_to_u16(ofproto
->alloc_port_no
);
1697 uint16_t alloc_port_no
= end_port_no
;
1699 /* Search for a free OpenFlow port number. We try not to
1700 * immediately reuse them to prevent problems due to old
1703 if (++alloc_port_no
>= max_ports
) {
1706 if (!bitmap_is_set(ofproto
->ofp_port_ids
, alloc_port_no
)) {
1707 port_idx
= alloc_port_no
;
1708 ofproto
->alloc_port_no
= u16_to_ofp(alloc_port_no
);
1711 if (alloc_port_no
== end_port_no
) {
1716 bitmap_set1(ofproto
->ofp_port_ids
, port_idx
);
1717 return u16_to_ofp(port_idx
);
1721 dealloc_ofp_port(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1723 if (ofp_to_u16(ofp_port
) < ofp_to_u16(ofproto
->max_ports
)) {
1724 bitmap_set0(ofproto
->ofp_port_ids
, ofp_to_u16(ofp_port
));
1728 /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
1729 * pointer if the netdev cannot be opened. On success, also fills in
1731 static struct netdev
*
1732 ofport_open(struct ofproto
*ofproto
,
1733 struct ofproto_port
*ofproto_port
,
1734 struct ofputil_phy_port
*pp
)
1736 enum netdev_flags flags
;
1737 struct netdev
*netdev
;
1740 error
= netdev_open(ofproto_port
->name
, ofproto_port
->type
, &netdev
);
1742 VLOG_WARN_RL(&rl
, "%s: ignoring port %s (%"PRIu16
") because netdev %s "
1743 "cannot be opened (%s)",
1745 ofproto_port
->name
, ofproto_port
->ofp_port
,
1746 ofproto_port
->name
, strerror(error
));
1750 if (ofproto_port
->ofp_port
== OFPP_NONE
) {
1751 if (!strcmp(ofproto
->name
, ofproto_port
->name
)) {
1752 ofproto_port
->ofp_port
= OFPP_LOCAL
;
1754 ofproto_port
->ofp_port
= alloc_ofp_port(ofproto
,
1755 ofproto_port
->name
);
1758 pp
->port_no
= ofproto_port
->ofp_port
;
1759 netdev_get_etheraddr(netdev
, pp
->hw_addr
);
1760 ovs_strlcpy(pp
->name
, ofproto_port
->name
, sizeof pp
->name
);
1761 netdev_get_flags(netdev
, &flags
);
1762 pp
->config
= flags
& NETDEV_UP
? 0 : OFPUTIL_PC_PORT_DOWN
;
1763 pp
->state
= netdev_get_carrier(netdev
) ? 0 : OFPUTIL_PS_LINK_DOWN
;
1764 netdev_get_features(netdev
, &pp
->curr
, &pp
->advertised
,
1765 &pp
->supported
, &pp
->peer
);
1766 pp
->curr_speed
= netdev_features_to_bps(pp
->curr
, 0);
1767 pp
->max_speed
= netdev_features_to_bps(pp
->supported
, 0);
1772 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
1773 * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are
1776 ofport_equal(const struct ofputil_phy_port
*a
,
1777 const struct ofputil_phy_port
*b
)
1779 return (eth_addr_equals(a
->hw_addr
, b
->hw_addr
)
1780 && a
->state
== b
->state
1781 && !((a
->config
^ b
->config
) & OFPUTIL_PC_PORT_DOWN
)
1782 && a
->curr
== b
->curr
1783 && a
->advertised
== b
->advertised
1784 && a
->supported
== b
->supported
1785 && a
->peer
== b
->peer
1786 && a
->curr_speed
== b
->curr_speed
1787 && a
->max_speed
== b
->max_speed
);
1790 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
1791 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
1792 * one with the same name or port number). */
1794 ofport_install(struct ofproto
*p
,
1795 struct netdev
*netdev
, const struct ofputil_phy_port
*pp
)
1797 const char *netdev_name
= netdev_get_name(netdev
);
1798 struct ofport
*ofport
;
1801 /* Create ofport. */
1802 ofport
= p
->ofproto_class
->port_alloc();
1807 ofport
->ofproto
= p
;
1808 ofport
->netdev
= netdev
;
1809 ofport
->change_seq
= netdev_change_seq(netdev
);
1811 ofport
->ofp_port
= pp
->port_no
;
1812 ofport
->created
= time_msec();
1814 /* Add port to 'p'. */
1815 hmap_insert(&p
->ports
, &ofport
->hmap_node
,
1816 hash_ofp_port(ofport
->ofp_port
));
1817 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1819 update_mtu(p
, ofport
);
1821 /* Let the ofproto_class initialize its private data. */
1822 error
= p
->ofproto_class
->port_construct(ofport
);
1826 connmgr_send_port_status(p
->connmgr
, pp
, OFPPR_ADD
);
1830 VLOG_WARN_RL(&rl
, "%s: could not add port %s (%s)",
1831 p
->name
, netdev_name
, strerror(error
));
1833 ofport_destroy__(ofport
);
1835 netdev_close(netdev
);
1839 /* Removes 'ofport' from 'p' and destroys it. */
1841 ofport_remove(struct ofport
*ofport
)
1843 connmgr_send_port_status(ofport
->ofproto
->connmgr
, &ofport
->pp
,
1845 ofport_destroy(ofport
);
1848 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
1851 ofport_remove_with_name(struct ofproto
*ofproto
, const char *name
)
1853 struct ofport
*port
= shash_find_data(&ofproto
->port_by_name
, name
);
1855 ofport_remove(port
);
1859 /* Updates 'port' with new 'pp' description.
1861 * Does not handle a name or port number change. The caller must implement
1862 * such a change as a delete followed by an add. */
1864 ofport_modified(struct ofport
*port
, struct ofputil_phy_port
*pp
)
1866 memcpy(port
->pp
.hw_addr
, pp
->hw_addr
, ETH_ADDR_LEN
);
1867 port
->pp
.config
= ((port
->pp
.config
& ~OFPUTIL_PC_PORT_DOWN
)
1868 | (pp
->config
& OFPUTIL_PC_PORT_DOWN
));
1869 port
->pp
.state
= pp
->state
;
1870 port
->pp
.curr
= pp
->curr
;
1871 port
->pp
.advertised
= pp
->advertised
;
1872 port
->pp
.supported
= pp
->supported
;
1873 port
->pp
.peer
= pp
->peer
;
1874 port
->pp
.curr_speed
= pp
->curr_speed
;
1875 port
->pp
.max_speed
= pp
->max_speed
;
1877 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
, OFPPR_MODIFY
);
1880 /* Update OpenFlow 'state' in 'port' and notify controller. */
1882 ofproto_port_set_state(struct ofport
*port
, enum ofputil_port_state state
)
1884 if (port
->pp
.state
!= state
) {
1885 port
->pp
.state
= state
;
1886 connmgr_send_port_status(port
->ofproto
->connmgr
, &port
->pp
,
1892 ofproto_port_unregister(struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1894 struct ofport
*port
= ofproto_get_port(ofproto
, ofp_port
);
1896 if (port
->ofproto
->ofproto_class
->set_realdev
) {
1897 port
->ofproto
->ofproto_class
->set_realdev(port
, 0, 0);
1899 if (port
->ofproto
->ofproto_class
->set_stp_port
) {
1900 port
->ofproto
->ofproto_class
->set_stp_port(port
, NULL
);
1902 if (port
->ofproto
->ofproto_class
->set_cfm
) {
1903 port
->ofproto
->ofproto_class
->set_cfm(port
, NULL
);
1905 if (port
->ofproto
->ofproto_class
->bundle_remove
) {
1906 port
->ofproto
->ofproto_class
->bundle_remove(port
);
1912 ofport_destroy__(struct ofport
*port
)
1914 struct ofproto
*ofproto
= port
->ofproto
;
1915 const char *name
= netdev_get_name(port
->netdev
);
1917 hmap_remove(&ofproto
->ports
, &port
->hmap_node
);
1918 shash_delete(&ofproto
->port_by_name
,
1919 shash_find(&ofproto
->port_by_name
, name
));
1921 netdev_close(port
->netdev
);
1922 ofproto
->ofproto_class
->port_dealloc(port
);
1926 ofport_destroy(struct ofport
*port
)
1929 dealloc_ofp_port(port
->ofproto
, port
->ofp_port
);
1930 port
->ofproto
->ofproto_class
->port_destruct(port
);
1931 ofport_destroy__(port
);
1936 ofproto_get_port(const struct ofproto
*ofproto
, ofp_port_t ofp_port
)
1938 struct ofport
*port
;
1940 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
, hash_ofp_port(ofp_port
),
1942 if (port
->ofp_port
== ofp_port
) {
1950 ofproto_port_get_stats(const struct ofport
*port
, struct netdev_stats
*stats
)
1952 struct ofproto
*ofproto
= port
->ofproto
;
1955 if (ofproto
->ofproto_class
->port_get_stats
) {
1956 error
= ofproto
->ofproto_class
->port_get_stats(port
, stats
);
1965 update_port(struct ofproto
*ofproto
, const char *name
)
1967 struct ofproto_port ofproto_port
;
1968 struct ofputil_phy_port pp
;
1969 struct netdev
*netdev
;
1970 struct ofport
*port
;
1972 COVERAGE_INC(ofproto_update_port
);
1974 /* Fetch 'name''s location and properties from the datapath. */
1975 netdev
= (!ofproto_port_query_by_name(ofproto
, name
, &ofproto_port
)
1976 ? ofport_open(ofproto
, &ofproto_port
, &pp
)
1980 port
= ofproto_get_port(ofproto
, ofproto_port
.ofp_port
);
1981 if (port
&& !strcmp(netdev_get_name(port
->netdev
), name
)) {
1982 struct netdev
*old_netdev
= port
->netdev
;
1984 /* 'name' hasn't changed location. Any properties changed? */
1985 if (!ofport_equal(&port
->pp
, &pp
)) {
1986 ofport_modified(port
, &pp
);
1989 update_mtu(ofproto
, port
);
1991 /* Install the newly opened netdev in case it has changed.
1992 * Don't close the old netdev yet in case port_modified has to
1993 * remove a retained reference to it.*/
1994 port
->netdev
= netdev
;
1995 port
->change_seq
= netdev_change_seq(netdev
);
1997 if (port
->ofproto
->ofproto_class
->port_modified
) {
1998 port
->ofproto
->ofproto_class
->port_modified(port
);
2001 netdev_close(old_netdev
);
2003 /* If 'port' is nonnull then its name differs from 'name' and thus
2004 * we should delete it. If we think there's a port named 'name'
2005 * then its port number must be wrong now so delete it too. */
2007 ofport_remove(port
);
2009 ofport_remove_with_name(ofproto
, name
);
2010 ofport_install(ofproto
, netdev
, &pp
);
2013 /* Any port named 'name' is gone now. */
2014 ofport_remove_with_name(ofproto
, name
);
2016 ofproto_port_destroy(&ofproto_port
);
2020 init_ports(struct ofproto
*p
)
2022 struct ofproto_port_dump dump
;
2023 struct ofproto_port ofproto_port
;
2024 struct shash_node
*node
, *next
;
2026 OFPROTO_PORT_FOR_EACH (&ofproto_port
, &dump
, p
) {
2027 const char *name
= ofproto_port
.name
;
2029 if (shash_find(&p
->port_by_name
, name
)) {
2030 VLOG_WARN_RL(&rl
, "%s: ignoring duplicate device %s in datapath",
2033 struct ofputil_phy_port pp
;
2034 struct netdev
*netdev
;
2036 /* Check if an OpenFlow port number had been requested. */
2037 node
= shash_find(&init_ofp_ports
, name
);
2039 const struct iface_hint
*iface_hint
= node
->data
;
2040 simap_put(&p
->ofp_requests
, name
,
2041 ofp_to_u16(iface_hint
->ofp_port
));
2044 netdev
= ofport_open(p
, &ofproto_port
, &pp
);
2046 ofport_install(p
, netdev
, &pp
);
2051 SHASH_FOR_EACH_SAFE(node
, next
, &init_ofp_ports
) {
2052 struct iface_hint
*iface_hint
= node
->data
;
2054 if (!strcmp(iface_hint
->br_name
, p
->name
)) {
2055 free(iface_hint
->br_name
);
2056 free(iface_hint
->br_type
);
2058 shash_delete(&init_ofp_ports
, node
);
2065 /* Find the minimum MTU of all non-datapath devices attached to 'p'.
2066 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2068 find_min_mtu(struct ofproto
*p
)
2070 struct ofport
*ofport
;
2073 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2074 struct netdev
*netdev
= ofport
->netdev
;
2077 /* Skip any internal ports, since that's what we're trying to
2079 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2083 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2086 if (!mtu
|| dev_mtu
< mtu
) {
2091 return mtu
? mtu
: ETH_PAYLOAD_MAX
;
2094 /* Update MTU of all datapath devices on 'p' to the minimum of the
2095 * non-datapath ports in event of 'port' added or changed. */
2097 update_mtu(struct ofproto
*p
, struct ofport
*port
)
2099 struct ofport
*ofport
;
2100 struct netdev
*netdev
= port
->netdev
;
2101 int dev_mtu
, old_min
;
2103 if (netdev_get_mtu(netdev
, &dev_mtu
)) {
2107 if (!strcmp(netdev_get_type(port
->netdev
), "internal")) {
2108 if (dev_mtu
> p
->min_mtu
) {
2109 if (!netdev_set_mtu(port
->netdev
, p
->min_mtu
)) {
2110 dev_mtu
= p
->min_mtu
;
2113 port
->mtu
= dev_mtu
;
2117 /* For non-internal port find new min mtu. */
2118 old_min
= p
->min_mtu
;
2119 port
->mtu
= dev_mtu
;
2120 p
->min_mtu
= find_min_mtu(p
);
2121 if (p
->min_mtu
== old_min
) {
2125 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
2126 struct netdev
*netdev
= ofport
->netdev
;
2128 if (!strcmp(netdev_get_type(netdev
), "internal")) {
2129 if (!netdev_set_mtu(netdev
, p
->min_mtu
)) {
2130 ofport
->mtu
= p
->min_mtu
;
2137 ofproto_rule_destroy__(struct rule
*rule
)
2140 cls_rule_destroy(&rule
->cr
);
2141 free(rule
->ofpacts
);
2142 rule
->ofproto
->ofproto_class
->rule_dealloc(rule
);
2146 /* This function allows an ofproto implementation to destroy any rules that
2147 * remain when its ->destruct() function is called. The caller must have
2148 * already uninitialized any derived members of 'rule' (step 5 described in the
2149 * large comment in ofproto/ofproto-provider.h titled "Life Cycle").
2150 * This function implements steps 6 and 7.
2152 * This function should only be called from an ofproto implementation's
2153 * ->destruct() function. It is not suitable elsewhere. */
2155 ofproto_rule_destroy(struct rule
*rule
)
2157 ovs_assert(!rule
->pending
);
2158 oftable_remove_rule(rule
);
2159 ofproto_rule_destroy__(rule
);
2162 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2163 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
2165 ofproto_rule_has_out_port(const struct rule
*rule
, ofp_port_t port
)
2167 return (port
== OFPP_ANY
2168 || ofpacts_output_to_port(rule
->ofpacts
, rule
->ofpacts_len
, port
));
2171 /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or
2172 * OFPAT_ENQUEUE action that outputs to 'out_port'. */
2174 ofoperation_has_out_port(const struct ofoperation
*op
, ofp_port_t out_port
)
2176 if (ofproto_rule_has_out_port(op
->rule
, out_port
)) {
2181 case OFOPERATION_ADD
:
2182 return op
->victim
&& ofproto_rule_has_out_port(op
->victim
, out_port
);
2184 case OFOPERATION_DELETE
:
2187 case OFOPERATION_MODIFY
:
2188 return ofpacts_output_to_port(op
->ofpacts
, op
->ofpacts_len
, out_port
);
2194 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
2195 * statistics appropriately. 'packet' must have at least sizeof(struct
2196 * ofp10_packet_in) bytes of headroom.
2198 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
2199 * with statistics for 'packet' either way.
2201 * Takes ownership of 'packet'. */
2203 rule_execute(struct rule
*rule
, ofp_port_t in_port
, struct ofpbuf
*packet
)
2206 union flow_in_port in_port_
;
2208 ovs_assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp10_packet_in
));
2210 in_port_
.ofp_port
= in_port
;
2211 flow_extract(packet
, 0, 0, NULL
, &in_port_
, &flow
);
2212 return rule
->ofproto
->ofproto_class
->rule_execute(rule
, &flow
, packet
);
2215 /* Returns true if 'rule' should be hidden from the controller.
2217 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
2218 * (e.g. by in-band control) and are intentionally hidden from the
2221 ofproto_rule_is_hidden(const struct rule
*rule
)
2223 return rule
->cr
.priority
> UINT16_MAX
;
2226 static enum oftable_flags
2227 rule_get_flags(const struct rule
*rule
)
2229 return rule
->ofproto
->tables
[rule
->table_id
].flags
;
2233 rule_is_modifiable(const struct rule
*rule
)
2235 return !(rule_get_flags(rule
) & OFTABLE_READONLY
);
2239 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2241 ofconn_send_reply(ofconn
, make_echo_reply(oh
));
2246 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2248 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2249 struct ofputil_switch_features features
;
2250 struct ofport
*port
;
2256 ofproto
->ofproto_class
->get_features(ofproto
, &arp_match_ip
,
2258 ovs_assert(features
.actions
& OFPUTIL_A_OUTPUT
); /* sanity check */
2260 /* Count only non-hidden tables in the number of tables. (Hidden tables,
2261 * if present, are always at the end.) */
2262 n_tables
= ofproto
->n_tables
;
2263 for (i
= 0; i
< ofproto
->n_tables
; i
++) {
2264 if (ofproto
->tables
[i
].flags
& OFTABLE_HIDDEN
) {
2270 features
.datapath_id
= ofproto
->datapath_id
;
2271 features
.n_buffers
= pktbuf_capacity();
2272 features
.n_tables
= n_tables
;
2273 features
.capabilities
= (OFPUTIL_C_FLOW_STATS
| OFPUTIL_C_TABLE_STATS
|
2274 OFPUTIL_C_PORT_STATS
| OFPUTIL_C_QUEUE_STATS
);
2276 features
.capabilities
|= OFPUTIL_C_ARP_MATCH_IP
;
2278 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
2279 features
.auxiliary_id
= 0;
2280 b
= ofputil_encode_switch_features(&features
, ofconn_get_protocol(ofconn
),
2282 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
2283 ofputil_put_switch_features_port(&port
->pp
, b
);
2286 ofconn_send_reply(ofconn
, b
);
2291 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2293 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2294 struct ofp_switch_config
*osc
;
2295 enum ofp_config_flags flags
;
2299 buf
= ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY
, oh
, 0);
2300 osc
= ofpbuf_put_uninit(buf
, sizeof *osc
);
2301 flags
= ofproto
->frag_handling
;
2302 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2303 if (oh
->version
< OFP13_VERSION
2304 && ofconn_get_invalid_ttl_to_controller(ofconn
)) {
2305 flags
|= OFPC_INVALID_TTL_TO_CONTROLLER
;
2307 osc
->flags
= htons(flags
);
2308 osc
->miss_send_len
= htons(ofconn_get_miss_send_len(ofconn
));
2309 ofconn_send_reply(ofconn
, buf
);
2315 handle_set_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2317 const struct ofp_switch_config
*osc
= ofpmsg_body(oh
);
2318 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2319 uint16_t flags
= ntohs(osc
->flags
);
2321 if (ofconn_get_type(ofconn
) != OFCONN_PRIMARY
2322 || ofconn_get_role(ofconn
) != OFPCR12_ROLE_SLAVE
) {
2323 enum ofp_config_flags cur
= ofproto
->frag_handling
;
2324 enum ofp_config_flags next
= flags
& OFPC_FRAG_MASK
;
2326 ovs_assert((cur
& OFPC_FRAG_MASK
) == cur
);
2328 if (ofproto
->ofproto_class
->set_frag_handling(ofproto
, next
)) {
2329 ofproto
->frag_handling
= next
;
2331 VLOG_WARN_RL(&rl
, "%s: unsupported fragment handling mode %s",
2333 ofputil_frag_handling_to_string(next
));
2337 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
2338 ofconn_set_invalid_ttl_to_controller(ofconn
,
2339 (oh
->version
< OFP13_VERSION
2340 && flags
& OFPC_INVALID_TTL_TO_CONTROLLER
));
2342 ofconn_set_miss_send_len(ofconn
, ntohs(osc
->miss_send_len
));
2347 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2348 * error message code for the caller to propagate upward. Otherwise, returns
2351 * The log message mentions 'msg_type'. */
2353 reject_slave_controller(struct ofconn
*ofconn
)
2355 if (ofconn_get_type(ofconn
) == OFCONN_PRIMARY
2356 && ofconn_get_role(ofconn
) == OFPCR12_ROLE_SLAVE
) {
2357 return OFPERR_OFPBRC_EPERM
;
2364 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2366 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2367 struct ofputil_packet_out po
;
2368 struct ofpbuf
*payload
;
2369 uint64_t ofpacts_stub
[1024 / 8];
2370 struct ofpbuf ofpacts
;
2372 union flow_in_port in_port_
;
2375 COVERAGE_INC(ofproto_packet_out
);
2377 error
= reject_slave_controller(ofconn
);
2382 /* Decode message. */
2383 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
2384 error
= ofputil_decode_packet_out(&po
, oh
, &ofpacts
);
2386 goto exit_free_ofpacts
;
2388 if (ofp_to_u16(po
.in_port
) >= ofp_to_u16(p
->max_ports
)
2389 && ofp_to_u16(po
.in_port
) < ofp_to_u16(OFPP_MAX
)) {
2390 error
= OFPERR_OFPBRC_BAD_PORT
;
2391 goto exit_free_ofpacts
;
2396 if (po
.buffer_id
!= UINT32_MAX
) {
2397 error
= ofconn_pktbuf_retrieve(ofconn
, po
.buffer_id
, &payload
, NULL
);
2398 if (error
|| !payload
) {
2399 goto exit_free_ofpacts
;
2402 payload
= xmalloc(sizeof *payload
);
2403 ofpbuf_use_const(payload
, po
.packet
, po
.packet_len
);
2406 /* Verify actions against packet, then send packet if successful. */
2407 in_port_
.ofp_port
= po
.in_port
;
2408 flow_extract(payload
, 0, 0, NULL
, &in_port_
, &flow
);
2409 error
= ofpacts_check(po
.ofpacts
, po
.ofpacts_len
, &flow
, p
->max_ports
);
2411 error
= p
->ofproto_class
->packet_out(p
, payload
, &flow
,
2412 po
.ofpacts
, po
.ofpacts_len
);
2414 ofpbuf_delete(payload
);
2417 ofpbuf_uninit(&ofpacts
);
2423 update_port_config(struct ofport
*port
,
2424 enum ofputil_port_config config
,
2425 enum ofputil_port_config mask
)
2427 enum ofputil_port_config old_config
= port
->pp
.config
;
2428 enum ofputil_port_config toggle
;
2430 toggle
= (config
^ port
->pp
.config
) & mask
;
2431 if (toggle
& OFPUTIL_PC_PORT_DOWN
) {
2432 if (config
& OFPUTIL_PC_PORT_DOWN
) {
2433 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, NULL
);
2435 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, NULL
);
2437 toggle
&= ~OFPUTIL_PC_PORT_DOWN
;
2440 port
->pp
.config
^= toggle
;
2441 if (port
->pp
.config
!= old_config
) {
2442 port
->ofproto
->ofproto_class
->port_reconfigured(port
, old_config
);
2447 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2449 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2450 struct ofputil_port_mod pm
;
2451 struct ofport
*port
;
2454 error
= reject_slave_controller(ofconn
);
2459 error
= ofputil_decode_port_mod(oh
, &pm
);
2464 port
= ofproto_get_port(p
, pm
.port_no
);
2466 return OFPERR_OFPPMFC_BAD_PORT
;
2467 } else if (!eth_addr_equals(port
->pp
.hw_addr
, pm
.hw_addr
)) {
2468 return OFPERR_OFPPMFC_BAD_HW_ADDR
;
2470 update_port_config(port
, pm
.config
, pm
.mask
);
2472 netdev_set_advertisements(port
->netdev
, pm
.advertise
);
2479 handle_desc_stats_request(struct ofconn
*ofconn
,
2480 const struct ofp_header
*request
)
2482 static const char *default_mfr_desc
= "Nicira, Inc.";
2483 static const char *default_hw_desc
= "Open vSwitch";
2484 static const char *default_sw_desc
= VERSION
;
2485 static const char *default_serial_desc
= "None";
2486 static const char *default_dp_desc
= "None";
2488 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2489 struct ofp_desc_stats
*ods
;
2492 msg
= ofpraw_alloc_stats_reply(request
, 0);
2493 ods
= ofpbuf_put_zeros(msg
, sizeof *ods
);
2494 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
? p
->mfr_desc
: default_mfr_desc
,
2495 sizeof ods
->mfr_desc
);
2496 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
? p
->hw_desc
: default_hw_desc
,
2497 sizeof ods
->hw_desc
);
2498 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
? p
->sw_desc
: default_sw_desc
,
2499 sizeof ods
->sw_desc
);
2500 ovs_strlcpy(ods
->serial_num
,
2501 p
->serial_desc
? p
->serial_desc
: default_serial_desc
,
2502 sizeof ods
->serial_num
);
2503 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
? p
->dp_desc
: default_dp_desc
,
2504 sizeof ods
->dp_desc
);
2505 ofconn_send_reply(ofconn
, msg
);
2511 handle_table_stats_request(struct ofconn
*ofconn
,
2512 const struct ofp_header
*request
)
2514 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2515 struct ofp12_table_stats
*ots
;
2520 /* Set up default values.
2522 * ofp12_table_stats is used as a generic structure as
2523 * it is able to hold all the fields for ofp10_table_stats
2524 * and ofp11_table_stats (and of course itself).
2526 ots
= xcalloc(p
->n_tables
, sizeof *ots
);
2527 for (i
= 0; i
< p
->n_tables
; i
++) {
2528 ots
[i
].table_id
= i
;
2529 sprintf(ots
[i
].name
, "table%zu", i
);
2530 ots
[i
].match
= htonll(OFPXMT12_MASK
);
2531 ots
[i
].wildcards
= htonll(OFPXMT12_MASK
);
2532 ots
[i
].write_actions
= htonl(OFPAT11_OUTPUT
);
2533 ots
[i
].apply_actions
= htonl(OFPAT11_OUTPUT
);
2534 ots
[i
].write_setfields
= htonll(OFPXMT12_MASK
);
2535 ots
[i
].apply_setfields
= htonll(OFPXMT12_MASK
);
2536 ots
[i
].metadata_match
= htonll(UINT64_MAX
);
2537 ots
[i
].metadata_write
= htonll(UINT64_MAX
);
2538 ots
[i
].instructions
= htonl(OFPIT11_ALL
);
2539 ots
[i
].config
= htonl(OFPTC11_TABLE_MISS_MASK
);
2540 ots
[i
].max_entries
= htonl(1000000); /* An arbitrary big number. */
2541 ots
[i
].active_count
= htonl(classifier_count(&p
->tables
[i
].cls
));
2544 p
->ofproto_class
->get_tables(p
, ots
);
2546 /* Post-process the tables, dropping hidden tables. */
2547 n_tables
= p
->n_tables
;
2548 for (i
= 0; i
< p
->n_tables
; i
++) {
2549 const struct oftable
*table
= &p
->tables
[i
];
2551 if (table
->flags
& OFTABLE_HIDDEN
) {
2557 ovs_strzcpy(ots
[i
].name
, table
->name
, sizeof ots
[i
].name
);
2560 if (table
->max_flows
< ntohl(ots
[i
].max_entries
)) {
2561 ots
[i
].max_entries
= htonl(table
->max_flows
);
2565 msg
= ofputil_encode_table_stats_reply(ots
, n_tables
, request
);
2566 ofconn_send_reply(ofconn
, msg
);
2574 append_port_stat(struct ofport
*port
, struct list
*replies
)
2576 struct ofputil_port_stats ops
= { .port_no
= port
->pp
.port_no
};
2578 calc_duration(port
->created
, time_msec(),
2579 &ops
.duration_sec
, &ops
.duration_nsec
);
2581 /* Intentionally ignore return value, since errors will set
2582 * 'stats' to all-1s, which is correct for OpenFlow, and
2583 * netdev_get_stats() will log errors. */
2584 ofproto_port_get_stats(port
, &ops
.stats
);
2586 ofputil_append_port_stat(replies
, &ops
);
2590 handle_port_stats_request(struct ofconn
*ofconn
,
2591 const struct ofp_header
*request
)
2593 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2594 struct ofport
*port
;
2595 struct list replies
;
2599 error
= ofputil_decode_port_stats_request(request
, &port_no
);
2604 ofpmp_init(&replies
, request
);
2605 if (port_no
!= OFPP_ANY
) {
2606 port
= ofproto_get_port(p
, port_no
);
2608 append_port_stat(port
, &replies
);
2611 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2612 append_port_stat(port
, &replies
);
2616 ofconn_send_replies(ofconn
, &replies
);
2621 handle_port_desc_stats_request(struct ofconn
*ofconn
,
2622 const struct ofp_header
*request
)
2624 struct ofproto
*p
= ofconn_get_ofproto(ofconn
);
2625 enum ofp_version version
;
2626 struct ofport
*port
;
2627 struct list replies
;
2629 ofpmp_init(&replies
, request
);
2631 version
= ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn
));
2632 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2633 ofputil_append_port_desc_stats_reply(version
, &port
->pp
, &replies
);
2636 ofconn_send_replies(ofconn
, &replies
);
2641 hash_cookie(ovs_be64 cookie
)
2643 return hash_2words((OVS_FORCE
uint64_t)cookie
>> 32,
2644 (OVS_FORCE
uint64_t)cookie
);
2648 cookies_insert(struct ofproto
*ofproto
, struct rule
*rule
)
2650 hindex_insert(&ofproto
->cookies
, &rule
->cookie_node
,
2651 hash_cookie(rule
->flow_cookie
));
2655 cookies_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2657 hindex_remove(&ofproto
->cookies
, &rule
->cookie_node
);
2661 ofproto_rule_change_cookie(struct ofproto
*ofproto
, struct rule
*rule
,
2662 ovs_be64 new_cookie
)
2664 if (new_cookie
!= rule
->flow_cookie
) {
2665 cookies_remove(ofproto
, rule
);
2667 rule
->flow_cookie
= new_cookie
;
2669 cookies_insert(ofproto
, rule
);
2674 calc_duration(long long int start
, long long int now
,
2675 uint32_t *sec
, uint32_t *nsec
)
2677 long long int msecs
= now
- start
;
2678 *sec
= msecs
/ 1000;
2679 *nsec
= (msecs
% 1000) * (1000 * 1000);
2682 /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
2683 * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */
2685 check_table_id(const struct ofproto
*ofproto
, uint8_t table_id
)
2687 return (table_id
== 0xff || table_id
< ofproto
->n_tables
2689 : OFPERR_OFPBRC_BAD_TABLE_ID
);
2693 static struct oftable
*
2694 next_visible_table(const struct ofproto
*ofproto
, uint8_t table_id
)
2696 struct oftable
*table
;
2698 for (table
= &ofproto
->tables
[table_id
];
2699 table
< &ofproto
->tables
[ofproto
->n_tables
];
2701 if (!(table
->flags
& OFTABLE_HIDDEN
)) {
2709 static struct oftable
*
2710 first_matching_table(const struct ofproto
*ofproto
, uint8_t table_id
)
2712 if (table_id
== 0xff) {
2713 return next_visible_table(ofproto
, 0);
2714 } else if (table_id
< ofproto
->n_tables
) {
2715 return &ofproto
->tables
[table_id
];
2721 static struct oftable
*
2722 next_matching_table(const struct ofproto
*ofproto
,
2723 const struct oftable
*table
, uint8_t table_id
)
2725 return (table_id
== 0xff
2726 ? next_visible_table(ofproto
, (table
- ofproto
->tables
) + 1)
2730 /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
2732 * - If TABLE_ID is 0xff, this iterates over every classifier table in
2733 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
2735 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
2736 * only once, for that table. (This can be used to access tables marked
2739 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
2740 * entered at all. (Perhaps you should have validated TABLE_ID with
2741 * check_table_id().)
2743 * All parameters are evaluated multiple times.
2745 #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
2746 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
2748 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
2750 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2751 * 'table_id' is 0xff) that match 'match' in the "loose" way required for
2752 * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list
2755 * If 'out_port' is anything other than OFPP_ANY, then only rules that output
2756 * to 'out_port' are included.
2758 * Hidden rules are always omitted.
2760 * Returns 0 on success, otherwise an OpenFlow error code. */
2762 collect_rules_loose(struct ofproto
*ofproto
, uint8_t table_id
,
2763 const struct match
*match
,
2764 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2765 ofp_port_t out_port
, struct list
*rules
)
2767 struct oftable
*table
;
2771 error
= check_table_id(ofproto
, table_id
);
2777 cls_rule_init(&cr
, match
, 0);
2779 if (cookie_mask
== htonll(UINT64_MAX
)) {
2782 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
, hash_cookie(cookie
),
2783 &ofproto
->cookies
) {
2784 if (table_id
!= rule
->table_id
&& table_id
!= 0xff) {
2787 if (ofproto_rule_is_hidden(rule
)) {
2790 if (cls_rule_is_loose_match(&rule
->cr
, &cr
.match
)) {
2791 if (rule
->pending
) {
2792 error
= OFPROTO_POSTPONE
;
2795 if (rule
->flow_cookie
== cookie
/* Hash collisions possible. */
2796 && ofproto_rule_has_out_port(rule
, out_port
)) {
2797 list_push_back(rules
, &rule
->ofproto_node
);
2804 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2805 struct cls_cursor cursor
;
2808 cls_cursor_init(&cursor
, &table
->cls
, &cr
);
2809 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
2810 if (rule
->pending
) {
2811 error
= OFPROTO_POSTPONE
;
2814 if (!ofproto_rule_is_hidden(rule
)
2815 && ofproto_rule_has_out_port(rule
, out_port
)
2816 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2817 list_push_back(rules
, &rule
->ofproto_node
);
2823 cls_rule_destroy(&cr
);
2827 /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if
2828 * 'table_id' is 0xff) that match 'match' in the "strict" way required for
2829 * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them
2832 * If 'out_port' is anything other than OFPP_ANY, then only rules that output
2833 * to 'out_port' are included.
2835 * Hidden rules are always omitted.
2837 * Returns 0 on success, otherwise an OpenFlow error code. */
2839 collect_rules_strict(struct ofproto
*ofproto
, uint8_t table_id
,
2840 const struct match
*match
, unsigned int priority
,
2841 ovs_be64 cookie
, ovs_be64 cookie_mask
,
2842 ofp_port_t out_port
, struct list
*rules
)
2844 struct oftable
*table
;
2848 error
= check_table_id(ofproto
, table_id
);
2854 cls_rule_init(&cr
, match
, priority
);
2856 if (cookie_mask
== htonll(UINT64_MAX
)) {
2859 HINDEX_FOR_EACH_WITH_HASH (rule
, cookie_node
, hash_cookie(cookie
),
2860 &ofproto
->cookies
) {
2861 if (table_id
!= rule
->table_id
&& table_id
!= 0xff) {
2864 if (ofproto_rule_is_hidden(rule
)) {
2867 if (cls_rule_equal(&rule
->cr
, &cr
)) {
2868 if (rule
->pending
) {
2869 error
= OFPROTO_POSTPONE
;
2872 if (rule
->flow_cookie
== cookie
/* Hash collisions possible. */
2873 && ofproto_rule_has_out_port(rule
, out_port
)) {
2874 list_push_back(rules
, &rule
->ofproto_node
);
2881 FOR_EACH_MATCHING_TABLE (table
, table_id
, ofproto
) {
2884 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&table
->cls
,
2887 if (rule
->pending
) {
2888 error
= OFPROTO_POSTPONE
;
2891 if (!ofproto_rule_is_hidden(rule
)
2892 && ofproto_rule_has_out_port(rule
, out_port
)
2893 && !((rule
->flow_cookie
^ cookie
) & cookie_mask
)) {
2894 list_push_back(rules
, &rule
->ofproto_node
);
2900 cls_rule_destroy(&cr
);
2904 /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
2905 * forced into the range of a uint16_t. */
2907 age_secs(long long int age_ms
)
2909 return (age_ms
< 0 ? 0
2910 : age_ms
>= UINT16_MAX
* 1000 ? UINT16_MAX
2911 : (unsigned int) age_ms
/ 1000);
2915 handle_flow_stats_request(struct ofconn
*ofconn
,
2916 const struct ofp_header
*request
)
2918 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
2919 struct ofputil_flow_stats_request fsr
;
2920 struct list replies
;
2925 error
= ofputil_decode_flow_stats_request(&fsr
, request
);
2930 error
= collect_rules_loose(ofproto
, fsr
.table_id
, &fsr
.match
,
2931 fsr
.cookie
, fsr
.cookie_mask
,
2932 fsr
.out_port
, &rules
);
2937 ofpmp_init(&replies
, request
);
2938 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
2939 long long int now
= time_msec();
2940 struct ofputil_flow_stats fs
;
2942 minimatch_expand(&rule
->cr
.match
, &fs
.match
);
2943 fs
.priority
= rule
->cr
.priority
;
2944 fs
.cookie
= rule
->flow_cookie
;
2945 fs
.table_id
= rule
->table_id
;
2946 calc_duration(rule
->created
, now
, &fs
.duration_sec
, &fs
.duration_nsec
);
2947 fs
.idle_timeout
= rule
->idle_timeout
;
2948 fs
.hard_timeout
= rule
->hard_timeout
;
2949 fs
.idle_age
= age_secs(now
- rule
->used
);
2950 fs
.hard_age
= age_secs(now
- rule
->modified
);
2951 ofproto
->ofproto_class
->rule_get_stats(rule
, &fs
.packet_count
,
2953 fs
.ofpacts
= rule
->ofpacts
;
2954 fs
.ofpacts_len
= rule
->ofpacts_len
;
2956 if (rule
->send_flow_removed
) {
2957 fs
.flags
|= OFPFF_SEND_FLOW_REM
;
2958 /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
2959 and OFPFF13_NO_BYT_COUNTS */
2961 ofputil_append_flow_stats_reply(&fs
, &replies
);
2963 ofconn_send_replies(ofconn
, &replies
);
2969 flow_stats_ds(struct rule
*rule
, struct ds
*results
)
2971 uint64_t packet_count
, byte_count
;
2973 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
,
2974 &packet_count
, &byte_count
);
2976 if (rule
->table_id
!= 0) {
2977 ds_put_format(results
, "table_id=%"PRIu8
", ", rule
->table_id
);
2979 ds_put_format(results
, "duration=%llds, ",
2980 (time_msec() - rule
->created
) / 1000);
2981 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2982 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2983 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2984 cls_rule_format(&rule
->cr
, results
);
2985 ds_put_char(results
, ',');
2986 ofpacts_format(rule
->ofpacts
, rule
->ofpacts_len
, results
);
2987 ds_put_cstr(results
, "\n");
2990 /* Adds a pretty-printed description of all flows to 'results', including
2991 * hidden flows (e.g., set up by in-band control). */
2993 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2995 struct oftable
*table
;
2997 OFPROTO_FOR_EACH_TABLE (table
, p
) {
2998 struct cls_cursor cursor
;
3001 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
3002 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3003 flow_stats_ds(rule
, results
);
3008 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
3009 * '*engine_type' and '*engine_id', respectively. */
3011 ofproto_get_netflow_ids(const struct ofproto
*ofproto
,
3012 uint8_t *engine_type
, uint8_t *engine_id
)
3014 ofproto
->ofproto_class
->get_netflow_ids(ofproto
, engine_type
, engine_id
);
3017 /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns
3018 * true if the port's CFM status was successfully stored into '*status'.
3019 * Returns false if the port did not have CFM configured, in which case
3020 * '*status' is indeterminate.
3022 * The caller must provide and owns '*status', but it does not own and must not
3023 * modify or free the array returned in 'status->rmps'. */
3025 ofproto_port_get_cfm_status(const struct ofproto
*ofproto
, ofp_port_t ofp_port
,
3026 struct ofproto_cfm_status
*status
)
3028 struct ofport
*ofport
= ofproto_get_port(ofproto
, ofp_port
);
3030 && ofproto
->ofproto_class
->get_cfm_status
3031 && ofproto
->ofproto_class
->get_cfm_status(ofport
, status
));
3035 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3036 const struct ofp_header
*oh
)
3038 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3039 struct ofputil_flow_stats_request request
;
3040 struct ofputil_aggregate_stats stats
;
3041 bool unknown_packets
, unknown_bytes
;
3042 struct ofpbuf
*reply
;
3047 error
= ofputil_decode_flow_stats_request(&request
, oh
);
3052 error
= collect_rules_loose(ofproto
, request
.table_id
, &request
.match
,
3053 request
.cookie
, request
.cookie_mask
,
3054 request
.out_port
, &rules
);
3059 memset(&stats
, 0, sizeof stats
);
3060 unknown_packets
= unknown_bytes
= false;
3061 LIST_FOR_EACH (rule
, ofproto_node
, &rules
) {
3062 uint64_t packet_count
;
3063 uint64_t byte_count
;
3065 ofproto
->ofproto_class
->rule_get_stats(rule
, &packet_count
,
3068 if (packet_count
== UINT64_MAX
) {
3069 unknown_packets
= true;
3071 stats
.packet_count
+= packet_count
;
3074 if (byte_count
== UINT64_MAX
) {
3075 unknown_bytes
= true;
3077 stats
.byte_count
+= byte_count
;
3082 if (unknown_packets
) {
3083 stats
.packet_count
= UINT64_MAX
;
3085 if (unknown_bytes
) {
3086 stats
.byte_count
= UINT64_MAX
;
3089 reply
= ofputil_encode_aggregate_stats_reply(&stats
, oh
);
3090 ofconn_send_reply(ofconn
, reply
);
3095 struct queue_stats_cbdata
{
3096 struct ofport
*ofport
;
3097 struct list replies
;
3101 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3102 const struct netdev_queue_stats
*stats
)
3105 struct ofputil_queue_stats oqs
= {
3106 .port_no
= cbdata
->ofport
->pp
.port_no
,
3107 .queue_id
= queue_id
,
3110 ofputil_append_queue_stat(&cbdata
->replies
, &oqs
);
3114 handle_queue_stats_dump_cb(uint32_t queue_id
,
3115 struct netdev_queue_stats
*stats
,
3118 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3120 put_queue_stats(cbdata
, queue_id
, stats
);
3124 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3125 struct queue_stats_cbdata
*cbdata
)
3127 cbdata
->ofport
= port
;
3128 if (queue_id
== OFPQ_ALL
) {
3129 netdev_dump_queue_stats(port
->netdev
,
3130 handle_queue_stats_dump_cb
, cbdata
);
3132 struct netdev_queue_stats stats
;
3134 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3135 put_queue_stats(cbdata
, queue_id
, &stats
);
3137 return OFPERR_OFPQOFC_BAD_QUEUE
;
3144 handle_queue_stats_request(struct ofconn
*ofconn
,
3145 const struct ofp_header
*rq
)
3147 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3148 struct queue_stats_cbdata cbdata
;
3149 struct ofport
*port
;
3151 struct ofputil_queue_stats_request oqsr
;
3153 COVERAGE_INC(ofproto_queue_req
);
3155 ofpmp_init(&cbdata
.replies
, rq
);
3157 error
= ofputil_decode_queue_stats_request(rq
, &oqsr
);
3162 if (oqsr
.port_no
== OFPP_ANY
) {
3163 error
= OFPERR_OFPQOFC_BAD_QUEUE
;
3164 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3165 if (!handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)) {
3170 port
= ofproto_get_port(ofproto
, oqsr
.port_no
);
3172 ? handle_queue_stats_for_port(port
, oqsr
.queue_id
, &cbdata
)
3173 : OFPERR_OFPQOFC_BAD_PORT
);
3176 ofconn_send_replies(ofconn
, &cbdata
.replies
);
3178 ofpbuf_list_delete(&cbdata
.replies
);
3185 is_flow_deletion_pending(const struct ofproto
*ofproto
,
3186 const struct cls_rule
*cls_rule
,
3189 if (!hmap_is_empty(&ofproto
->deletions
)) {
3190 struct ofoperation
*op
;
3192 HMAP_FOR_EACH_WITH_HASH (op
, hmap_node
,
3193 cls_rule_hash(cls_rule
, table_id
),
3194 &ofproto
->deletions
) {
3195 if (cls_rule_equal(cls_rule
, &op
->rule
->cr
)) {
3204 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3205 * in which no matching flow already exists in the flow table.
3207 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3208 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
3209 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
3210 * initiated now but may be retried later.
3212 * Upon successful return, takes ownership of 'fm->ofpacts'. On failure,
3213 * ownership remains with the caller.
3215 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3218 add_flow(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3219 const struct ofputil_flow_mod
*fm
, const struct ofp_header
*request
)
3221 struct oftable
*table
;
3222 struct ofopgroup
*group
;
3223 struct rule
*victim
;
3228 error
= check_table_id(ofproto
, fm
->table_id
);
3234 if (fm
->table_id
== 0xff) {
3235 if (ofproto
->ofproto_class
->rule_choose_table
) {
3236 error
= ofproto
->ofproto_class
->rule_choose_table(ofproto
,
3242 ovs_assert(table_id
< ofproto
->n_tables
);
3246 } else if (fm
->table_id
< ofproto
->n_tables
) {
3247 table_id
= fm
->table_id
;
3249 return OFPERR_OFPBRC_BAD_TABLE_ID
;
3252 table
= &ofproto
->tables
[table_id
];
3254 if (table
->flags
& OFTABLE_READONLY
) {
3255 return OFPERR_OFPBRC_EPERM
;
3258 /* Allocate new rule and initialize classifier rule. */
3259 rule
= ofproto
->ofproto_class
->rule_alloc();
3261 VLOG_WARN_RL(&rl
, "%s: failed to create rule (%s)",
3262 ofproto
->name
, strerror(error
));
3265 cls_rule_init(&rule
->cr
, &fm
->match
, fm
->priority
);
3267 /* Serialize against pending deletion. */
3268 if (is_flow_deletion_pending(ofproto
, &rule
->cr
, table_id
)) {
3269 cls_rule_destroy(&rule
->cr
);
3270 ofproto
->ofproto_class
->rule_dealloc(rule
);
3271 return OFPROTO_POSTPONE
;
3274 /* Check for overlap, if requested. */
3275 if (fm
->flags
& OFPFF_CHECK_OVERLAP
3276 && classifier_rule_overlaps(&table
->cls
, &rule
->cr
)) {
3277 cls_rule_destroy(&rule
->cr
);
3278 ofproto
->ofproto_class
->rule_dealloc(rule
);
3279 return OFPERR_OFPFMFC_OVERLAP
;
3282 /* FIXME: Implement OFPFF12_RESET_COUNTS */
3284 rule
->ofproto
= ofproto
;
3285 rule
->pending
= NULL
;
3286 rule
->flow_cookie
= fm
->new_cookie
;
3287 rule
->created
= rule
->modified
= rule
->used
= time_msec();
3288 rule
->idle_timeout
= fm
->idle_timeout
;
3289 rule
->hard_timeout
= fm
->hard_timeout
;
3290 rule
->table_id
= table
- ofproto
->tables
;
3291 rule
->send_flow_removed
= (fm
->flags
& OFPFF_SEND_FLOW_REM
) != 0;
3292 /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS
3293 and OFPFF13_NO_BYT_COUNTS */
3294 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
3295 rule
->ofpacts_len
= fm
->ofpacts_len
;
3296 rule
->evictable
= true;
3297 rule
->eviction_group
= NULL
;
3298 list_init(&rule
->expirable
);
3299 rule
->monitor_flags
= 0;
3300 rule
->add_seqno
= 0;
3301 rule
->modify_seqno
= 0;
3303 /* Insert new rule. */
3304 victim
= oftable_replace_rule(rule
);
3305 if (victim
&& !rule_is_modifiable(victim
)) {
3306 error
= OFPERR_OFPBRC_EPERM
;
3307 } else if (victim
&& victim
->pending
) {
3308 error
= OFPROTO_POSTPONE
;
3310 struct ofoperation
*op
;
3313 if (classifier_count(&table
->cls
) > table
->max_flows
) {
3316 was_evictable
= rule
->evictable
;
3317 rule
->evictable
= false;
3318 evict
= choose_rule_to_evict(table
);
3319 rule
->evictable
= was_evictable
;
3322 error
= OFPERR_OFPFMFC_TABLE_FULL
;
3324 } else if (evict
->pending
) {
3325 error
= OFPROTO_POSTPONE
;
3332 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
3333 op
= ofoperation_create(group
, rule
, OFOPERATION_ADD
, 0);
3334 op
->victim
= victim
;
3336 error
= ofproto
->ofproto_class
->rule_construct(rule
);
3338 op
->group
->n_running
--;
3339 ofoperation_destroy(rule
->pending
);
3341 delete_flow__(evict
, group
);
3343 ofopgroup_submit(group
);
3347 /* Back out if an error occurred. */
3349 oftable_substitute_rule(rule
, victim
);
3350 ofproto_rule_destroy__(rule
);
3355 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3357 /* Modifies the rules listed in 'rules', changing their actions to match those
3360 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3363 * Returns 0 on success, otherwise an OpenFlow error code. */
3365 modify_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3366 const struct ofputil_flow_mod
*fm
,
3367 const struct ofp_header
*request
, struct list
*rules
)
3369 struct ofopgroup
*group
;
3373 group
= ofopgroup_create(ofproto
, ofconn
, request
, fm
->buffer_id
);
3374 error
= OFPERR_OFPBRC_EPERM
;
3375 LIST_FOR_EACH (rule
, ofproto_node
, rules
) {
3376 struct ofoperation
*op
;
3377 bool actions_changed
;
3379 /* FIXME: Implement OFPFF12_RESET_COUNTS */
3381 if (rule_is_modifiable(rule
)) {
3382 /* At least one rule is modifiable, don't report EPERM error. */
3388 actions_changed
= !ofpacts_equal(fm
->ofpacts
, fm
->ofpacts_len
,
3389 rule
->ofpacts
, rule
->ofpacts_len
);
3391 op
= ofoperation_create(group
, rule
, OFOPERATION_MODIFY
, 0);
3393 if (fm
->new_cookie
!= htonll(UINT64_MAX
)) {
3394 ofproto_rule_change_cookie(ofproto
, rule
, fm
->new_cookie
);
3396 if (actions_changed
) {
3397 op
->ofpacts
= rule
->ofpacts
;
3398 op
->ofpacts_len
= rule
->ofpacts_len
;
3399 rule
->ofpacts
= xmemdup(fm
->ofpacts
, fm
->ofpacts_len
);
3400 rule
->ofpacts_len
= fm
->ofpacts_len
;
3401 rule
->ofproto
->ofproto_class
->rule_modify_actions(rule
);
3403 ofoperation_complete(op
, 0);
3406 ofopgroup_submit(group
);
3412 modify_flows_add(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3413 const struct ofputil_flow_mod
*fm
,
3414 const struct ofp_header
*request
)
3416 if (fm
->cookie_mask
!= htonll(0) || fm
->new_cookie
== htonll(UINT64_MAX
)) {
3419 return add_flow(ofproto
, ofconn
, fm
, request
);
3422 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
3425 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3428 modify_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3429 const struct ofputil_flow_mod
*fm
,
3430 const struct ofp_header
*request
)
3435 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->match
,
3436 fm
->cookie
, fm
->cookie_mask
,
3440 } else if (list_is_empty(&rules
)) {
3441 return modify_flows_add(ofproto
, ofconn
, fm
, request
);
3443 return modify_flows__(ofproto
, ofconn
, fm
, request
, &rules
);
3447 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3450 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
3453 modify_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3454 const struct ofputil_flow_mod
*fm
,
3455 const struct ofp_header
*request
)
3460 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->match
,
3461 fm
->priority
, fm
->cookie
, fm
->cookie_mask
,
3466 } else if (list_is_empty(&rules
)) {
3467 return modify_flows_add(ofproto
, ofconn
, fm
, request
);
3469 return list_is_singleton(&rules
) ? modify_flows__(ofproto
, ofconn
,
3470 fm
, request
, &rules
)
3475 /* OFPFC_DELETE implementation. */
3478 delete_flow__(struct rule
*rule
, struct ofopgroup
*group
)
3480 struct ofproto
*ofproto
= rule
->ofproto
;
3482 ofproto_rule_send_removed(rule
, OFPRR_DELETE
);
3484 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, OFPRR_DELETE
);
3485 oftable_remove_rule(rule
);
3486 ofproto
->ofproto_class
->rule_destruct(rule
);
3489 /* Deletes the rules listed in 'rules'.
3491 * Returns 0 on success, otherwise an OpenFlow error code. */
3493 delete_flows__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3494 const struct ofp_header
*request
, struct list
*rules
)
3496 struct rule
*rule
, *next
;
3497 struct ofopgroup
*group
;
3499 group
= ofopgroup_create(ofproto
, ofconn
, request
, UINT32_MAX
);
3500 LIST_FOR_EACH_SAFE (rule
, next
, ofproto_node
, rules
) {
3501 delete_flow__(rule
, group
);
3503 ofopgroup_submit(group
);
3508 /* Implements OFPFC_DELETE. */
3510 delete_flows_loose(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3511 const struct ofputil_flow_mod
*fm
,
3512 const struct ofp_header
*request
)
3517 error
= collect_rules_loose(ofproto
, fm
->table_id
, &fm
->match
,
3518 fm
->cookie
, fm
->cookie_mask
,
3519 fm
->out_port
, &rules
);
3520 return (error
? error
3521 : !list_is_empty(&rules
) ? delete_flows__(ofproto
, ofconn
, request
,
3526 /* Implements OFPFC_DELETE_STRICT. */
3528 delete_flow_strict(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3529 const struct ofputil_flow_mod
*fm
,
3530 const struct ofp_header
*request
)
3535 error
= collect_rules_strict(ofproto
, fm
->table_id
, &fm
->match
,
3536 fm
->priority
, fm
->cookie
, fm
->cookie_mask
,
3537 fm
->out_port
, &rules
);
3538 return (error
? error
3539 : list_is_singleton(&rules
) ? delete_flows__(ofproto
, ofconn
,
3545 ofproto_rule_send_removed(struct rule
*rule
, uint8_t reason
)
3547 struct ofputil_flow_removed fr
;
3549 if (ofproto_rule_is_hidden(rule
) || !rule
->send_flow_removed
) {
3553 minimatch_expand(&rule
->cr
.match
, &fr
.match
);
3554 fr
.priority
= rule
->cr
.priority
;
3555 fr
.cookie
= rule
->flow_cookie
;
3557 fr
.table_id
= rule
->table_id
;
3558 calc_duration(rule
->created
, time_msec(),
3559 &fr
.duration_sec
, &fr
.duration_nsec
);
3560 fr
.idle_timeout
= rule
->idle_timeout
;
3561 fr
.hard_timeout
= rule
->hard_timeout
;
3562 rule
->ofproto
->ofproto_class
->rule_get_stats(rule
, &fr
.packet_count
,
3565 connmgr_send_flow_removed(rule
->ofproto
->connmgr
, &fr
);
3569 ofproto_rule_update_used(struct rule
*rule
, long long int used
)
3571 if (used
> rule
->used
) {
3572 struct eviction_group
*evg
= rule
->eviction_group
;
3576 heap_change(&evg
->rules
, &rule
->evg_node
,
3577 rule_eviction_priority(rule
));
3582 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
3583 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
3586 * 'rule' must not have a pending operation (that is, 'rule->pending' must be
3589 * ofproto implementation ->run() functions should use this function to expire
3590 * OpenFlow flows. */
3592 ofproto_rule_expire(struct rule
*rule
, uint8_t reason
)
3594 struct ofproto
*ofproto
= rule
->ofproto
;
3595 struct ofopgroup
*group
;
3597 ovs_assert(reason
== OFPRR_HARD_TIMEOUT
|| reason
== OFPRR_IDLE_TIMEOUT
);
3599 ofproto_rule_send_removed(rule
, reason
);
3601 group
= ofopgroup_create_unattached(ofproto
);
3602 ofoperation_create(group
, rule
, OFOPERATION_DELETE
, reason
);
3603 oftable_remove_rule(rule
);
3604 ofproto
->ofproto_class
->rule_destruct(rule
);
3605 ofopgroup_submit(group
);
3609 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3611 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
3612 struct ofputil_flow_mod fm
;
3613 uint64_t ofpacts_stub
[1024 / 8];
3614 struct ofpbuf ofpacts
;
3618 error
= reject_slave_controller(ofconn
);
3623 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3624 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn_get_protocol(ofconn
),
3627 error
= ofpacts_check(fm
.ofpacts
, fm
.ofpacts_len
,
3628 &fm
.match
.flow
, ofproto
->max_ports
);
3631 error
= handle_flow_mod__(ofproto
, ofconn
, &fm
, oh
);
3634 goto exit_free_ofpacts
;
3637 /* Record the operation for logging a summary report. */
3638 switch (fm
.command
) {
3644 case OFPFC_MODIFY_STRICT
:
3645 ofproto
->n_modify
++;
3649 case OFPFC_DELETE_STRICT
:
3650 ofproto
->n_delete
++;
3655 if (ofproto
->next_op_report
== LLONG_MAX
) {
3656 ofproto
->first_op
= now
;
3657 ofproto
->next_op_report
= MAX(now
+ 10 * 1000,
3658 ofproto
->op_backoff
);
3659 ofproto
->op_backoff
= ofproto
->next_op_report
+ 60 * 1000;
3661 ofproto
->last_op
= now
;
3664 ofpbuf_uninit(&ofpacts
);
3670 handle_flow_mod__(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3671 const struct ofputil_flow_mod
*fm
,
3672 const struct ofp_header
*oh
)
3674 if (ofproto
->n_pending
>= 50) {
3675 ovs_assert(!list_is_empty(&ofproto
->pending
));
3676 return OFPROTO_POSTPONE
;
3679 switch (fm
->command
) {
3681 return add_flow(ofproto
, ofconn
, fm
, oh
);
3684 return modify_flows_loose(ofproto
, ofconn
, fm
, oh
);
3686 case OFPFC_MODIFY_STRICT
:
3687 return modify_flow_strict(ofproto
, ofconn
, fm
, oh
);
3690 return delete_flows_loose(ofproto
, ofconn
, fm
, oh
);
3692 case OFPFC_DELETE_STRICT
:
3693 return delete_flow_strict(ofproto
, ofconn
, fm
, oh
);
3696 if (fm
->command
> 0xff) {
3697 VLOG_WARN_RL(&rl
, "%s: flow_mod has explicit table_id but "
3698 "flow_mod_table_id extension is not enabled",
3701 return OFPERR_OFPFMFC_BAD_COMMAND
;
3706 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3708 struct ofputil_role_request request
;
3709 struct ofputil_role_request reply
;
3713 error
= ofputil_decode_role_message(oh
, &request
);
3718 if (request
.role
!= OFPCR12_ROLE_NOCHANGE
) {
3719 if (ofconn_get_role(ofconn
) != request
.role
3720 && ofconn_has_pending_opgroups(ofconn
)) {
3721 return OFPROTO_POSTPONE
;
3724 if (request
.have_generation_id
3725 && !ofconn_set_master_election_id(ofconn
, request
.generation_id
)) {
3726 return OFPERR_OFPRRFC_STALE
;
3729 ofconn_set_role(ofconn
, request
.role
);
3732 reply
.role
= ofconn_get_role(ofconn
);
3733 reply
.have_generation_id
= ofconn_get_master_election_id(
3734 ofconn
, &reply
.generation_id
);
3735 buf
= ofputil_encode_role_reply(oh
, &reply
);
3736 ofconn_send_reply(ofconn
, buf
);
3742 handle_nxt_flow_mod_table_id(struct ofconn
*ofconn
,
3743 const struct ofp_header
*oh
)
3745 const struct nx_flow_mod_table_id
*msg
= ofpmsg_body(oh
);
3746 enum ofputil_protocol cur
, next
;
3748 cur
= ofconn_get_protocol(ofconn
);
3749 next
= ofputil_protocol_set_tid(cur
, msg
->set
!= 0);
3750 ofconn_set_protocol(ofconn
, next
);
3756 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3758 const struct nx_set_flow_format
*msg
= ofpmsg_body(oh
);
3759 enum ofputil_protocol cur
, next
;
3760 enum ofputil_protocol next_base
;
3762 next_base
= ofputil_nx_flow_format_to_protocol(ntohl(msg
->format
));
3764 return OFPERR_OFPBRC_EPERM
;
3767 cur
= ofconn_get_protocol(ofconn
);
3768 next
= ofputil_protocol_set_base(cur
, next_base
);
3769 if (cur
!= next
&& ofconn_has_pending_opgroups(ofconn
)) {
3770 /* Avoid sending async messages in surprising protocol. */
3771 return OFPROTO_POSTPONE
;
3774 ofconn_set_protocol(ofconn
, next
);
3779 handle_nxt_set_packet_in_format(struct ofconn
*ofconn
,
3780 const struct ofp_header
*oh
)
3782 const struct nx_set_packet_in_format
*msg
= ofpmsg_body(oh
);
3785 format
= ntohl(msg
->format
);
3786 if (format
!= NXPIF_OPENFLOW10
&& format
!= NXPIF_NXM
) {
3787 return OFPERR_OFPBRC_EPERM
;
3790 if (format
!= ofconn_get_packet_in_format(ofconn
)
3791 && ofconn_has_pending_opgroups(ofconn
)) {
3792 /* Avoid sending async message in surprsing packet in format. */
3793 return OFPROTO_POSTPONE
;
3796 ofconn_set_packet_in_format(ofconn
, format
);
3801 handle_nxt_set_async_config(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3803 const struct nx_async_config
*msg
= ofpmsg_body(oh
);
3804 uint32_t master
[OAM_N_TYPES
];
3805 uint32_t slave
[OAM_N_TYPES
];
3807 master
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[0]);
3808 master
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[0]);
3809 master
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[0]);
3811 slave
[OAM_PACKET_IN
] = ntohl(msg
->packet_in_mask
[1]);
3812 slave
[OAM_PORT_STATUS
] = ntohl(msg
->port_status_mask
[1]);
3813 slave
[OAM_FLOW_REMOVED
] = ntohl(msg
->flow_removed_mask
[1]);
3815 ofconn_set_async_config(ofconn
, master
, slave
);
3816 if (ofconn_get_type(ofconn
) == OFCONN_SERVICE
&&
3817 !ofconn_get_miss_send_len(ofconn
)) {
3818 ofconn_set_miss_send_len(ofconn
, OFP_DEFAULT_MISS_SEND_LEN
);
3825 handle_nxt_set_controller_id(struct ofconn
*ofconn
,
3826 const struct ofp_header
*oh
)
3828 const struct nx_controller_id
*nci
= ofpmsg_body(oh
);
3830 if (!is_all_zeros(nci
->zero
, sizeof nci
->zero
)) {
3831 return OFPERR_NXBRC_MUST_BE_ZERO
;
3834 ofconn_set_controller_id(ofconn
, ntohs(nci
->controller_id
));
3839 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3843 if (ofconn_has_pending_opgroups(ofconn
)) {
3844 return OFPROTO_POSTPONE
;
3847 buf
= ofpraw_alloc_reply((oh
->version
== OFP10_VERSION
3848 ? OFPRAW_OFPT10_BARRIER_REPLY
3849 : OFPRAW_OFPT11_BARRIER_REPLY
), oh
, 0);
3850 ofconn_send_reply(ofconn
, buf
);
3855 ofproto_compose_flow_refresh_update(const struct rule
*rule
,
3856 enum nx_flow_monitor_flags flags
,
3859 struct ofoperation
*op
= rule
->pending
;
3860 struct ofputil_flow_update fu
;
3863 if (op
&& op
->type
== OFOPERATION_ADD
&& !op
->victim
) {
3864 /* We'll report the final flow when the operation completes. Reporting
3865 * it now would cause a duplicate report later. */
3869 fu
.event
= (flags
& (NXFMF_INITIAL
| NXFMF_ADD
)
3870 ? NXFME_ADDED
: NXFME_MODIFIED
);
3872 fu
.idle_timeout
= rule
->idle_timeout
;
3873 fu
.hard_timeout
= rule
->hard_timeout
;
3874 fu
.table_id
= rule
->table_id
;
3875 fu
.cookie
= rule
->flow_cookie
;
3876 minimatch_expand(&rule
->cr
.match
, &match
);
3878 fu
.priority
= rule
->cr
.priority
;
3879 if (!(flags
& NXFMF_ACTIONS
)) {
3883 fu
.ofpacts
= rule
->ofpacts
;
3884 fu
.ofpacts_len
= rule
->ofpacts_len
;
3886 /* An operation is in progress. Use the previous version of the flow's
3887 * actions, so that when the operation commits we report the change. */
3889 case OFOPERATION_ADD
:
3890 /* We already verified that there was a victim. */
3891 fu
.ofpacts
= op
->victim
->ofpacts
;
3892 fu
.ofpacts_len
= op
->victim
->ofpacts_len
;
3895 case OFOPERATION_MODIFY
:
3897 fu
.ofpacts
= op
->ofpacts
;
3898 fu
.ofpacts_len
= op
->ofpacts_len
;
3900 fu
.ofpacts
= rule
->ofpacts
;
3901 fu
.ofpacts_len
= rule
->ofpacts_len
;
3905 case OFOPERATION_DELETE
:
3906 fu
.ofpacts
= rule
->ofpacts
;
3907 fu
.ofpacts_len
= rule
->ofpacts_len
;
3915 if (list_is_empty(msgs
)) {
3916 ofputil_start_flow_update(msgs
);
3918 ofputil_append_flow_update(&fu
, msgs
);
3922 ofmonitor_compose_refresh_updates(struct list
*rules
, struct list
*msgs
)
3926 LIST_FOR_EACH (rule
, ofproto_node
, rules
) {
3927 enum nx_flow_monitor_flags flags
= rule
->monitor_flags
;
3928 rule
->monitor_flags
= 0;
3930 ofproto_compose_flow_refresh_update(rule
, flags
, msgs
);
3935 ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor
*m
,
3936 struct rule
*rule
, uint64_t seqno
,
3939 enum nx_flow_monitor_flags update
;
3941 if (ofproto_rule_is_hidden(rule
)) {
3946 ? ofoperation_has_out_port(rule
->pending
, m
->out_port
)
3947 : ofproto_rule_has_out_port(rule
, m
->out_port
))) {
3952 if (rule
->add_seqno
> seqno
) {
3953 update
= NXFMF_ADD
| NXFMF_MODIFY
;
3954 } else if (rule
->modify_seqno
> seqno
) {
3955 update
= NXFMF_MODIFY
;
3960 if (!(m
->flags
& update
)) {
3964 update
= NXFMF_INITIAL
;
3967 if (!rule
->monitor_flags
) {
3968 list_push_back(rules
, &rule
->ofproto_node
);
3970 rule
->monitor_flags
|= update
| (m
->flags
& NXFMF_ACTIONS
);
3974 ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor
*m
,
3978 const struct ofproto
*ofproto
= ofconn_get_ofproto(m
->ofconn
);
3979 const struct ofoperation
*op
;
3980 const struct oftable
*table
;
3981 struct cls_rule target
;
3983 cls_rule_init_from_minimatch(&target
, &m
->match
, 0);
3984 FOR_EACH_MATCHING_TABLE (table
, m
->table_id
, ofproto
) {
3985 struct cls_cursor cursor
;
3988 cls_cursor_init(&cursor
, &table
->cls
, &target
);
3989 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3990 ovs_assert(!rule
->pending
); /* XXX */
3991 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
3995 HMAP_FOR_EACH (op
, hmap_node
, &ofproto
->deletions
) {
3996 struct rule
*rule
= op
->rule
;
3998 if (((m
->table_id
== 0xff
3999 ? !(ofproto
->tables
[rule
->table_id
].flags
& OFTABLE_HIDDEN
)
4000 : m
->table_id
== rule
->table_id
))
4001 && cls_rule_is_loose_match(&rule
->cr
, &target
.match
)) {
4002 ofproto_collect_ofmonitor_refresh_rule(m
, rule
, seqno
, rules
);
4005 cls_rule_destroy(&target
);
4009 ofproto_collect_ofmonitor_initial_rules(struct ofmonitor
*m
,
4012 if (m
->flags
& NXFMF_INITIAL
) {
4013 ofproto_collect_ofmonitor_refresh_rules(m
, 0, rules
);
4018 ofmonitor_collect_resume_rules(struct ofmonitor
*m
,
4019 uint64_t seqno
, struct list
*rules
)
4021 ofproto_collect_ofmonitor_refresh_rules(m
, seqno
, rules
);
4025 handle_flow_monitor_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4027 struct ofproto
*ofproto
= ofconn_get_ofproto(ofconn
);
4028 struct ofmonitor
**monitors
;
4029 size_t n_monitors
, allocated_monitors
;
4030 struct list replies
;
4037 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
4039 n_monitors
= allocated_monitors
= 0;
4041 struct ofputil_flow_monitor_request request
;
4042 struct ofmonitor
*m
;
4045 retval
= ofputil_decode_flow_monitor_request(&request
, &b
);
4046 if (retval
== EOF
) {
4048 } else if (retval
) {
4053 if (request
.table_id
!= 0xff
4054 && request
.table_id
>= ofproto
->n_tables
) {
4055 error
= OFPERR_OFPBRC_BAD_TABLE_ID
;
4059 error
= ofmonitor_create(&request
, ofconn
, &m
);
4064 if (n_monitors
>= allocated_monitors
) {
4065 monitors
= x2nrealloc(monitors
, &allocated_monitors
,
4068 monitors
[n_monitors
++] = m
;
4072 for (i
= 0; i
< n_monitors
; i
++) {
4073 ofproto_collect_ofmonitor_initial_rules(monitors
[i
], &rules
);
4076 ofpmp_init(&replies
, oh
);
4077 ofmonitor_compose_refresh_updates(&rules
, &replies
);
4078 ofconn_send_replies(ofconn
, &replies
);
4085 for (i
= 0; i
< n_monitors
; i
++) {
4086 ofmonitor_destroy(monitors
[i
]);
4093 handle_flow_monitor_cancel(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4095 struct ofmonitor
*m
;
4098 id
= ofputil_decode_flow_monitor_cancel(oh
);
4099 m
= ofmonitor_lookup(ofconn
, id
);
4101 return OFPERR_NXBRC_FM_BAD_ID
;
4104 ofmonitor_destroy(m
);
4109 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
4111 const struct ofp_header
*oh
= msg
->data
;
4115 error
= ofptype_decode(&type
, oh
);
4121 /* OpenFlow requests. */
4122 case OFPTYPE_ECHO_REQUEST
:
4123 return handle_echo_request(ofconn
, oh
);
4125 case OFPTYPE_FEATURES_REQUEST
:
4126 return handle_features_request(ofconn
, oh
);
4128 case OFPTYPE_GET_CONFIG_REQUEST
:
4129 return handle_get_config_request(ofconn
, oh
);
4131 case OFPTYPE_SET_CONFIG
:
4132 return handle_set_config(ofconn
, oh
);
4134 case OFPTYPE_PACKET_OUT
:
4135 return handle_packet_out(ofconn
, oh
);
4137 case OFPTYPE_PORT_MOD
:
4138 return handle_port_mod(ofconn
, oh
);
4140 case OFPTYPE_FLOW_MOD
:
4141 return handle_flow_mod(ofconn
, oh
);
4143 case OFPTYPE_BARRIER_REQUEST
:
4144 return handle_barrier_request(ofconn
, oh
);
4146 case OFPTYPE_ROLE_REQUEST
:
4147 return handle_role_request(ofconn
, oh
);
4149 /* OpenFlow replies. */
4150 case OFPTYPE_ECHO_REPLY
:
4153 /* Nicira extension requests. */
4154 case OFPTYPE_FLOW_MOD_TABLE_ID
:
4155 return handle_nxt_flow_mod_table_id(ofconn
, oh
);
4157 case OFPTYPE_SET_FLOW_FORMAT
:
4158 return handle_nxt_set_flow_format(ofconn
, oh
);
4160 case OFPTYPE_SET_PACKET_IN_FORMAT
:
4161 return handle_nxt_set_packet_in_format(ofconn
, oh
);
4163 case OFPTYPE_SET_CONTROLLER_ID
:
4164 return handle_nxt_set_controller_id(ofconn
, oh
);
4166 case OFPTYPE_FLOW_AGE
:
4167 /* Nothing to do. */
4170 case OFPTYPE_FLOW_MONITOR_CANCEL
:
4171 return handle_flow_monitor_cancel(ofconn
, oh
);
4173 case OFPTYPE_SET_ASYNC_CONFIG
:
4174 return handle_nxt_set_async_config(ofconn
, oh
);
4176 /* Statistics requests. */
4177 case OFPTYPE_DESC_STATS_REQUEST
:
4178 return handle_desc_stats_request(ofconn
, oh
);
4180 case OFPTYPE_FLOW_STATS_REQUEST
:
4181 return handle_flow_stats_request(ofconn
, oh
);
4183 case OFPTYPE_AGGREGATE_STATS_REQUEST
:
4184 return handle_aggregate_stats_request(ofconn
, oh
);
4186 case OFPTYPE_TABLE_STATS_REQUEST
:
4187 return handle_table_stats_request(ofconn
, oh
);
4189 case OFPTYPE_PORT_STATS_REQUEST
:
4190 return handle_port_stats_request(ofconn
, oh
);
4192 case OFPTYPE_QUEUE_STATS_REQUEST
:
4193 return handle_queue_stats_request(ofconn
, oh
);
4195 case OFPTYPE_PORT_DESC_STATS_REQUEST
:
4196 return handle_port_desc_stats_request(ofconn
, oh
);
4198 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST
:
4199 return handle_flow_monitor_request(ofconn
, oh
);
4201 /* FIXME: Change the following once they are implemented: */
4202 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST
:
4203 case OFPTYPE_GET_ASYNC_REQUEST
:
4204 case OFPTYPE_METER_MOD
:
4205 case OFPTYPE_GROUP_REQUEST
:
4206 case OFPTYPE_GROUP_DESC_REQUEST
:
4207 case OFPTYPE_GROUP_FEATURES_REQUEST
:
4208 case OFPTYPE_METER_REQUEST
:
4209 case OFPTYPE_METER_CONFIG_REQUEST
:
4210 case OFPTYPE_METER_FEATURES_REQUEST
:
4211 case OFPTYPE_TABLE_FEATURES_REQUEST
:
4212 return OFPERR_OFPBRC_BAD_TYPE
;
4216 case OFPTYPE_FEATURES_REPLY
:
4217 case OFPTYPE_GET_CONFIG_REPLY
:
4218 case OFPTYPE_PACKET_IN
:
4219 case OFPTYPE_FLOW_REMOVED
:
4220 case OFPTYPE_PORT_STATUS
:
4221 case OFPTYPE_BARRIER_REPLY
:
4222 case OFPTYPE_QUEUE_GET_CONFIG_REPLY
:
4223 case OFPTYPE_DESC_STATS_REPLY
:
4224 case OFPTYPE_FLOW_STATS_REPLY
:
4225 case OFPTYPE_QUEUE_STATS_REPLY
:
4226 case OFPTYPE_PORT_STATS_REPLY
:
4227 case OFPTYPE_TABLE_STATS_REPLY
:
4228 case OFPTYPE_AGGREGATE_STATS_REPLY
:
4229 case OFPTYPE_PORT_DESC_STATS_REPLY
:
4230 case OFPTYPE_ROLE_REPLY
:
4231 case OFPTYPE_FLOW_MONITOR_PAUSED
:
4232 case OFPTYPE_FLOW_MONITOR_RESUMED
:
4233 case OFPTYPE_FLOW_MONITOR_STATS_REPLY
:
4234 case OFPTYPE_GET_ASYNC_REPLY
:
4235 case OFPTYPE_GROUP_REPLY
:
4236 case OFPTYPE_GROUP_DESC_REPLY
:
4237 case OFPTYPE_GROUP_FEATURES_REPLY
:
4238 case OFPTYPE_METER_REPLY
:
4239 case OFPTYPE_METER_CONFIG_REPLY
:
4240 case OFPTYPE_METER_FEATURES_REPLY
:
4241 case OFPTYPE_TABLE_FEATURES_REPLY
:
4243 return OFPERR_OFPBRC_BAD_TYPE
;
4248 handle_openflow(struct ofconn
*ofconn
, const struct ofpbuf
*ofp_msg
)
4250 int error
= handle_openflow__(ofconn
, ofp_msg
);
4251 if (error
&& error
!= OFPROTO_POSTPONE
) {
4252 ofconn_send_error(ofconn
, ofp_msg
->data
, error
);
4254 COVERAGE_INC(ofproto_recv_openflow
);
4255 return error
!= OFPROTO_POSTPONE
;
4258 /* Asynchronous operations. */
4260 /* Creates and returns a new ofopgroup that is not associated with any
4261 * OpenFlow connection.
4263 * The caller should add operations to the returned group with
4264 * ofoperation_create() and then submit it with ofopgroup_submit(). */
4265 static struct ofopgroup
*
4266 ofopgroup_create_unattached(struct ofproto
*ofproto
)
4268 struct ofopgroup
*group
= xzalloc(sizeof *group
);
4269 group
->ofproto
= ofproto
;
4270 list_init(&group
->ofproto_node
);
4271 list_init(&group
->ops
);
4272 list_init(&group
->ofconn_node
);
4276 /* Creates and returns a new ofopgroup for 'ofproto'.
4278 * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow
4279 * connection. The 'request' and 'buffer_id' arguments are ignored.
4281 * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'.
4282 * If the ofopgroup eventually fails, then the error reply will include
4283 * 'request'. If the ofopgroup eventually succeeds, then the packet with
4284 * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto.
4286 * The caller should add operations to the returned group with
4287 * ofoperation_create() and then submit it with ofopgroup_submit(). */
4288 static struct ofopgroup
*
4289 ofopgroup_create(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
4290 const struct ofp_header
*request
, uint32_t buffer_id
)
4292 struct ofopgroup
*group
= ofopgroup_create_unattached(ofproto
);
4294 size_t request_len
= ntohs(request
->length
);
4296 ovs_assert(ofconn_get_ofproto(ofconn
) == ofproto
);
4298 ofconn_add_opgroup(ofconn
, &group
->ofconn_node
);
4299 group
->ofconn
= ofconn
;
4300 group
->request
= xmemdup(request
, MIN(request_len
, 64));
4301 group
->buffer_id
= buffer_id
;
4306 /* Submits 'group' for processing.
4308 * If 'group' contains no operations (e.g. none were ever added, or all of the
4309 * ones that were added completed synchronously), then it is destroyed
4310 * immediately. Otherwise it is added to the ofproto's list of pending
4313 ofopgroup_submit(struct ofopgroup
*group
)
4315 if (!group
->n_running
) {
4316 ofopgroup_complete(group
);
4318 list_push_back(&group
->ofproto
->pending
, &group
->ofproto_node
);
4319 group
->ofproto
->n_pending
++;
4324 ofopgroup_complete(struct ofopgroup
*group
)
4326 struct ofproto
*ofproto
= group
->ofproto
;
4328 struct ofconn
*abbrev_ofconn
;
4329 ovs_be32 abbrev_xid
;
4331 struct ofoperation
*op
, *next_op
;
4334 ovs_assert(!group
->n_running
);
4337 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
4344 if (!error
&& group
->ofconn
&& group
->buffer_id
!= UINT32_MAX
) {
4345 LIST_FOR_EACH (op
, group_node
, &group
->ops
) {
4346 if (op
->type
!= OFOPERATION_DELETE
) {
4347 struct ofpbuf
*packet
;
4350 error
= ofconn_pktbuf_retrieve(group
->ofconn
, group
->buffer_id
,
4354 error
= rule_execute(op
->rule
, in_port
, packet
);
4361 if (!error
&& !list_is_empty(&group
->ofconn_node
)) {
4362 abbrev_ofconn
= group
->ofconn
;
4363 abbrev_xid
= group
->request
->xid
;
4365 abbrev_ofconn
= NULL
;
4366 abbrev_xid
= htonl(0);
4368 LIST_FOR_EACH_SAFE (op
, next_op
, group_node
, &group
->ops
) {
4369 struct rule
*rule
= op
->rule
;
4371 /* We generally want to report the change to active OpenFlow flow
4372 monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions:
4374 - The operation failed.
4376 - The affected rule is not visible to controllers.
4378 - The operation's only effect was to update rule->modified. */
4380 || ofproto_rule_is_hidden(rule
)
4381 || (op
->type
== OFOPERATION_MODIFY
4383 && rule
->flow_cookie
== op
->flow_cookie
))) {
4384 /* Check that we can just cast from ofoperation_type to
4385 * nx_flow_update_event. */
4386 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_ADD
4388 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_DELETE
4390 BUILD_ASSERT_DECL((enum nx_flow_update_event
) OFOPERATION_MODIFY
4393 ofmonitor_report(ofproto
->connmgr
, rule
,
4394 (enum nx_flow_update_event
) op
->type
,
4395 op
->reason
, abbrev_ofconn
, abbrev_xid
);
4398 rule
->pending
= NULL
;
4401 case OFOPERATION_ADD
:
4405 ofproto_rule_destroy__(op
->victim
);
4406 vid_mask
= minimask_get_vid_mask(&rule
->cr
.match
.mask
);
4407 if (vid_mask
== VLAN_VID_MASK
) {
4408 if (ofproto
->vlan_bitmap
) {
4409 uint16_t vid
= miniflow_get_vid(&rule
->cr
.match
.flow
);
4410 if (!bitmap_is_set(ofproto
->vlan_bitmap
, vid
)) {
4411 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
4412 ofproto
->vlans_changed
= true;
4415 ofproto
->vlans_changed
= true;
4419 oftable_substitute_rule(rule
, op
->victim
);
4420 ofproto_rule_destroy__(rule
);
4424 case OFOPERATION_DELETE
:
4425 ovs_assert(!op
->error
);
4426 ofproto_rule_destroy__(rule
);
4430 case OFOPERATION_MODIFY
:
4432 rule
->modified
= time_msec();
4434 ofproto_rule_change_cookie(ofproto
, rule
, op
->flow_cookie
);
4436 free(rule
->ofpacts
);
4437 rule
->ofpacts
= op
->ofpacts
;
4438 rule
->ofpacts_len
= op
->ofpacts_len
;
4440 op
->ofpacts_len
= 0;
4449 ofoperation_destroy(op
);
4452 ofmonitor_flush(ofproto
->connmgr
);
4454 if (!list_is_empty(&group
->ofproto_node
)) {
4455 ovs_assert(ofproto
->n_pending
> 0);
4456 ofproto
->n_pending
--;
4457 list_remove(&group
->ofproto_node
);
4459 if (!list_is_empty(&group
->ofconn_node
)) {
4460 list_remove(&group
->ofconn_node
);
4462 ofconn_send_error(group
->ofconn
, group
->request
, error
);
4464 connmgr_retry(ofproto
->connmgr
);
4466 free(group
->request
);
4470 /* Initiates a new operation on 'rule', of the specified 'type', within
4471 * 'group'. Prior to calling, 'rule' must not have any pending operation.
4473 * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that
4474 * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0).
4476 * Returns the newly created ofoperation (which is also available as
4477 * rule->pending). */
4478 static struct ofoperation
*
4479 ofoperation_create(struct ofopgroup
*group
, struct rule
*rule
,
4480 enum ofoperation_type type
,
4481 enum ofp_flow_removed_reason reason
)
4483 struct ofproto
*ofproto
= group
->ofproto
;
4484 struct ofoperation
*op
;
4486 ovs_assert(!rule
->pending
);
4488 op
= rule
->pending
= xzalloc(sizeof *op
);
4490 list_push_back(&group
->ops
, &op
->group_node
);
4493 op
->reason
= reason
;
4494 op
->flow_cookie
= rule
->flow_cookie
;
4498 if (type
== OFOPERATION_DELETE
) {
4499 hmap_insert(&ofproto
->deletions
, &op
->hmap_node
,
4500 cls_rule_hash(&rule
->cr
, rule
->table_id
));
4507 ofoperation_destroy(struct ofoperation
*op
)
4509 struct ofopgroup
*group
= op
->group
;
4512 op
->rule
->pending
= NULL
;
4514 if (op
->type
== OFOPERATION_DELETE
) {
4515 hmap_remove(&group
->ofproto
->deletions
, &op
->hmap_node
);
4517 list_remove(&op
->group_node
);
4522 /* Indicates that 'op' completed with status 'error', which is either 0 to
4523 * indicate success or an OpenFlow error code on failure.
4525 * If 'error' is 0, indicating success, the operation will be committed
4526 * permanently to the flow table. There is one interesting subcase:
4528 * - If 'op' is an "add flow" operation that is replacing an existing rule in
4529 * the flow table (the "victim" rule) by a new one, then the caller must
4530 * have uninitialized any derived state in the victim rule, as in step 5 in
4531 * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete()
4532 * performs steps 6 and 7 for the victim rule, most notably by calling its
4533 * ->rule_dealloc() function.
4535 * If 'error' is nonzero, then generally the operation will be rolled back:
4537 * - If 'op' is an "add flow" operation, ofproto removes the new rule or
4538 * restores the original rule. The caller must have uninitialized any
4539 * derived state in the new rule, as in step 5 of in the "Life Cycle" in
4540 * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and
4541 * and 7 for the new rule, calling its ->rule_dealloc() function.
4543 * - If 'op' is a "modify flow" operation, ofproto restores the original
4546 * - 'op' must not be a "delete flow" operation. Removing a rule is not
4547 * allowed to fail. It must always succeed.
4549 * Please see the large comment in ofproto/ofproto-provider.h titled
4550 * "Asynchronous Operation Support" for more information. */
4552 ofoperation_complete(struct ofoperation
*op
, enum ofperr error
)
4554 struct ofopgroup
*group
= op
->group
;
4556 ovs_assert(op
->rule
->pending
== op
);
4557 ovs_assert(group
->n_running
> 0);
4558 ovs_assert(!error
|| op
->type
!= OFOPERATION_DELETE
);
4561 if (!--group
->n_running
&& !list_is_empty(&group
->ofproto_node
)) {
4562 ofopgroup_complete(group
);
4567 ofoperation_get_victim(struct ofoperation
*op
)
4569 ovs_assert(op
->type
== OFOPERATION_ADD
);
4574 pick_datapath_id(const struct ofproto
*ofproto
)
4576 const struct ofport
*port
;
4578 port
= ofproto_get_port(ofproto
, OFPP_LOCAL
);
4580 uint8_t ea
[ETH_ADDR_LEN
];
4583 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4585 return eth_addr_to_uint64(ea
);
4587 VLOG_WARN("%s: could not get MAC address for %s (%s)",
4588 ofproto
->name
, netdev_get_name(port
->netdev
),
4591 return ofproto
->fallback_dpid
;
4595 pick_fallback_dpid(void)
4597 uint8_t ea
[ETH_ADDR_LEN
];
4598 eth_addr_nicira_random(ea
);
4599 return eth_addr_to_uint64(ea
);
4602 /* Table overflow policy. */
4604 /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table
4605 * is not configured to evict rules or if the table contains no evictable
4606 * rules. (Rules with 'evictable' set to false or with no timeouts are not
4608 static struct rule
*
4609 choose_rule_to_evict(struct oftable
*table
)
4611 struct eviction_group
*evg
;
4613 if (!table
->eviction_fields
) {
4617 /* In the common case, the outer and inner loops here will each be entered
4620 * - The inner loop normally "return"s in its first iteration. If the
4621 * eviction group has any evictable rules, then it always returns in
4624 * - The outer loop only iterates more than once if the largest eviction
4625 * group has no evictable rules.
4627 * - The outer loop can exit only if table's 'max_flows' is all filled up
4628 * by unevictable rules'. */
4629 HEAP_FOR_EACH (evg
, size_node
, &table
->eviction_groups_by_size
) {
4632 HEAP_FOR_EACH (rule
, evg_node
, &evg
->rules
) {
4633 if (rule
->evictable
) {
4642 /* Searches 'ofproto' for tables that have more flows than their configured
4643 * maximum and that have flow eviction enabled, and evicts as many flows as
4644 * necessary and currently feasible from them.
4646 * This triggers only when an OpenFlow table has N flows in it and then the
4647 * client configures a maximum number of flows less than N. */
4649 ofproto_evict(struct ofproto
*ofproto
)
4651 struct ofopgroup
*group
;
4652 struct oftable
*table
;
4654 group
= ofopgroup_create_unattached(ofproto
);
4655 OFPROTO_FOR_EACH_TABLE (table
, ofproto
) {
4656 while (classifier_count(&table
->cls
) > table
->max_flows
4657 && table
->eviction_fields
) {
4660 rule
= choose_rule_to_evict(table
);
4661 if (!rule
|| rule
->pending
) {
4665 ofoperation_create(group
, rule
,
4666 OFOPERATION_DELETE
, OFPRR_EVICTION
);
4667 oftable_remove_rule(rule
);
4668 ofproto
->ofproto_class
->rule_destruct(rule
);
4671 ofopgroup_submit(group
);
4674 /* Eviction groups. */
4676 /* Returns the priority to use for an eviction_group that contains 'n_rules'
4677 * rules. The priority contains low-order random bits to ensure that eviction
4678 * groups with the same number of rules are prioritized randomly. */
4680 eviction_group_priority(size_t n_rules
)
4682 uint16_t size
= MIN(UINT16_MAX
, n_rules
);
4683 return (size
<< 16) | random_uint16();
4686 /* Updates 'evg', an eviction_group within 'table', following a change that
4687 * adds or removes rules in 'evg'. */
4689 eviction_group_resized(struct oftable
*table
, struct eviction_group
*evg
)
4691 heap_change(&table
->eviction_groups_by_size
, &evg
->size_node
,
4692 eviction_group_priority(heap_count(&evg
->rules
)));
4695 /* Destroys 'evg', an eviction_group within 'table':
4697 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
4698 * rules themselves, just removes them from the eviction group.)
4700 * - Removes 'evg' from 'table'.
4704 eviction_group_destroy(struct oftable
*table
, struct eviction_group
*evg
)
4706 while (!heap_is_empty(&evg
->rules
)) {
4709 rule
= CONTAINER_OF(heap_pop(&evg
->rules
), struct rule
, evg_node
);
4710 rule
->eviction_group
= NULL
;
4712 hmap_remove(&table
->eviction_groups_by_id
, &evg
->id_node
);
4713 heap_remove(&table
->eviction_groups_by_size
, &evg
->size_node
);
4714 heap_destroy(&evg
->rules
);
4718 /* Removes 'rule' from its eviction group, if any. */
4720 eviction_group_remove_rule(struct rule
*rule
)
4722 if (rule
->eviction_group
) {
4723 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
4724 struct eviction_group
*evg
= rule
->eviction_group
;
4726 rule
->eviction_group
= NULL
;
4727 heap_remove(&evg
->rules
, &rule
->evg_node
);
4728 if (heap_is_empty(&evg
->rules
)) {
4729 eviction_group_destroy(table
, evg
);
4731 eviction_group_resized(table
, evg
);
4736 /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
4737 * returns the hash value. */
4739 eviction_group_hash_rule(struct rule
*rule
)
4741 struct oftable
*table
= &rule
->ofproto
->tables
[rule
->table_id
];
4742 const struct mf_subfield
*sf
;
4746 hash
= table
->eviction_group_id_basis
;
4747 miniflow_expand(&rule
->cr
.match
.flow
, &flow
);
4748 for (sf
= table
->eviction_fields
;
4749 sf
< &table
->eviction_fields
[table
->n_eviction_fields
];
4752 if (mf_are_prereqs_ok(sf
->field
, &flow
)) {
4753 union mf_value value
;
4755 mf_get_value(sf
->field
, &flow
, &value
);
4757 bitwise_zero(&value
, sf
->field
->n_bytes
, 0, sf
->ofs
);
4759 if (sf
->ofs
+ sf
->n_bits
< sf
->field
->n_bytes
* 8) {
4760 unsigned int start
= sf
->ofs
+ sf
->n_bits
;
4761 bitwise_zero(&value
, sf
->field
->n_bytes
, start
,
4762 sf
->field
->n_bytes
* 8 - start
);
4764 hash
= hash_bytes(&value
, sf
->field
->n_bytes
, hash
);
4766 hash
= hash_int(hash
, 0);
4773 /* Returns an eviction group within 'table' with the given 'id', creating one
4775 static struct eviction_group
*
4776 eviction_group_find(struct oftable
*table
, uint32_t id
)
4778 struct eviction_group
*evg
;
4780 HMAP_FOR_EACH_WITH_HASH (evg
, id_node
, id
, &table
->eviction_groups_by_id
) {
4784 evg
= xmalloc(sizeof *evg
);
4785 hmap_insert(&table
->eviction_groups_by_id
, &evg
->id_node
, id
);
4786 heap_insert(&table
->eviction_groups_by_size
, &evg
->size_node
,
4787 eviction_group_priority(0));
4788 heap_init(&evg
->rules
);
4793 /* Returns an eviction priority for 'rule'. The return value should be
4794 * interpreted so that higher priorities make a rule more attractive candidates
4797 rule_eviction_priority(struct rule
*rule
)
4799 long long int hard_expiration
;
4800 long long int idle_expiration
;
4801 long long int expiration
;
4802 uint32_t expiration_offset
;
4804 /* Calculate time of expiration. */
4805 hard_expiration
= (rule
->hard_timeout
4806 ? rule
->modified
+ rule
->hard_timeout
* 1000
4808 idle_expiration
= (rule
->idle_timeout
4809 ? rule
->used
+ rule
->idle_timeout
* 1000
4811 expiration
= MIN(hard_expiration
, idle_expiration
);
4812 if (expiration
== LLONG_MAX
) {
4816 /* Calculate the time of expiration as a number of (approximate) seconds
4817 * after program startup.
4819 * This should work OK for program runs that last UINT32_MAX seconds or
4820 * less. Therefore, please restart OVS at least once every 136 years. */
4821 expiration_offset
= (expiration
>> 10) - (time_boot_msec() >> 10);
4823 /* Invert the expiration offset because we're using a max-heap. */
4824 return UINT32_MAX
- expiration_offset
;
4827 /* Adds 'rule' to an appropriate eviction group for its oftable's
4828 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
4829 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
4832 * The caller must ensure that 'rule' is not already in an eviction group. */
4834 eviction_group_add_rule(struct rule
*rule
)
4836 struct ofproto
*ofproto
= rule
->ofproto
;
4837 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4839 if (table
->eviction_fields
4840 && (rule
->hard_timeout
|| rule
->idle_timeout
)) {
4841 struct eviction_group
*evg
;
4843 evg
= eviction_group_find(table
, eviction_group_hash_rule(rule
));
4845 rule
->eviction_group
= evg
;
4846 heap_insert(&evg
->rules
, &rule
->evg_node
,
4847 rule_eviction_priority(rule
));
4848 eviction_group_resized(table
, evg
);
4854 /* Initializes 'table'. */
4856 oftable_init(struct oftable
*table
)
4858 memset(table
, 0, sizeof *table
);
4859 classifier_init(&table
->cls
);
4860 table
->max_flows
= UINT_MAX
;
4863 /* Destroys 'table', including its classifier and eviction groups.
4865 * The caller is responsible for freeing 'table' itself. */
4867 oftable_destroy(struct oftable
*table
)
4869 ovs_assert(classifier_is_empty(&table
->cls
));
4870 oftable_disable_eviction(table
);
4871 classifier_destroy(&table
->cls
);
4875 /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
4876 * string, then 'table' will use its default name.
4878 * This only affects the name exposed for a table exposed through the OpenFlow
4879 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
4881 oftable_set_name(struct oftable
*table
, const char *name
)
4883 if (name
&& name
[0]) {
4884 int len
= strnlen(name
, OFP_MAX_TABLE_NAME_LEN
);
4885 if (!table
->name
|| strncmp(name
, table
->name
, len
)) {
4887 table
->name
= xmemdup0(name
, len
);
4895 /* oftables support a choice of two policies when adding a rule would cause the
4896 * number of flows in the table to exceed the configured maximum number: either
4897 * they can refuse to add the new flow or they can evict some existing flow.
4898 * This function configures the former policy on 'table'. */
4900 oftable_disable_eviction(struct oftable
*table
)
4902 if (table
->eviction_fields
) {
4903 struct eviction_group
*evg
, *next
;
4905 HMAP_FOR_EACH_SAFE (evg
, next
, id_node
,
4906 &table
->eviction_groups_by_id
) {
4907 eviction_group_destroy(table
, evg
);
4909 hmap_destroy(&table
->eviction_groups_by_id
);
4910 heap_destroy(&table
->eviction_groups_by_size
);
4912 free(table
->eviction_fields
);
4913 table
->eviction_fields
= NULL
;
4914 table
->n_eviction_fields
= 0;
4918 /* oftables support a choice of two policies when adding a rule would cause the
4919 * number of flows in the table to exceed the configured maximum number: either
4920 * they can refuse to add the new flow or they can evict some existing flow.
4921 * This function configures the latter policy on 'table', with fairness based
4922 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
4923 * 'n_fields' as 0 disables fairness.) */
4925 oftable_enable_eviction(struct oftable
*table
,
4926 const struct mf_subfield
*fields
, size_t n_fields
)
4928 struct cls_cursor cursor
;
4931 if (table
->eviction_fields
4932 && n_fields
== table
->n_eviction_fields
4934 || !memcmp(fields
, table
->eviction_fields
,
4935 n_fields
* sizeof *fields
))) {
4940 oftable_disable_eviction(table
);
4942 table
->n_eviction_fields
= n_fields
;
4943 table
->eviction_fields
= xmemdup(fields
, n_fields
* sizeof *fields
);
4945 table
->eviction_group_id_basis
= random_uint32();
4946 hmap_init(&table
->eviction_groups_by_id
);
4947 heap_init(&table
->eviction_groups_by_size
);
4949 cls_cursor_init(&cursor
, &table
->cls
, NULL
);
4950 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
4951 eviction_group_add_rule(rule
);
4955 /* Removes 'rule' from the oftable that contains it. */
4957 oftable_remove_rule(struct rule
*rule
)
4959 struct ofproto
*ofproto
= rule
->ofproto
;
4960 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4962 classifier_remove(&table
->cls
, &rule
->cr
);
4963 cookies_remove(ofproto
, rule
);
4964 eviction_group_remove_rule(rule
);
4965 if (!list_is_empty(&rule
->expirable
)) {
4966 list_remove(&rule
->expirable
);
4970 /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s
4971 * oftable that has an identical cls_rule. Returns the rule that was removed,
4972 * if any, and otherwise NULL. */
4973 static struct rule
*
4974 oftable_replace_rule(struct rule
*rule
)
4976 struct ofproto
*ofproto
= rule
->ofproto
;
4977 struct oftable
*table
= &ofproto
->tables
[rule
->table_id
];
4978 struct rule
*victim
;
4979 bool may_expire
= rule
->hard_timeout
|| rule
->idle_timeout
;
4982 list_insert(&ofproto
->expirable
, &rule
->expirable
);
4984 cookies_insert(ofproto
, rule
);
4986 victim
= rule_from_cls_rule(classifier_replace(&table
->cls
, &rule
->cr
));
4988 cookies_remove(ofproto
, victim
);
4990 if (!list_is_empty(&victim
->expirable
)) {
4991 list_remove(&victim
->expirable
);
4993 eviction_group_remove_rule(victim
);
4995 eviction_group_add_rule(rule
);
4999 /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */
5001 oftable_substitute_rule(struct rule
*old
, struct rule
*new)
5004 oftable_replace_rule(new);
5006 oftable_remove_rule(old
);
5010 /* unixctl commands. */
5013 ofproto_lookup(const char *name
)
5015 struct ofproto
*ofproto
;
5017 HMAP_FOR_EACH_WITH_HASH (ofproto
, hmap_node
, hash_string(name
, 0),
5019 if (!strcmp(ofproto
->name
, name
)) {
5027 ofproto_unixctl_list(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
5028 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
5030 struct ofproto
*ofproto
;
5034 HMAP_FOR_EACH (ofproto
, hmap_node
, &all_ofprotos
) {
5035 ds_put_format(&results
, "%s\n", ofproto
->name
);
5037 unixctl_command_reply(conn
, ds_cstr(&results
));
5038 ds_destroy(&results
);
5042 ofproto_unixctl_init(void)
5044 static bool registered
;
5050 unixctl_command_register("ofproto/list", "", 0, 0,
5051 ofproto_unixctl_list
, NULL
);
5054 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
5056 * This is deprecated. It is only for compatibility with broken device drivers
5057 * in old versions of Linux that do not properly support VLANs when VLAN
5058 * devices are not used. When broken device drivers are no longer in
5059 * widespread use, we will delete these interfaces. */
5061 /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
5062 * (exactly) by an OpenFlow rule in 'ofproto'. */
5064 ofproto_get_vlan_usage(struct ofproto
*ofproto
, unsigned long int *vlan_bitmap
)
5066 const struct oftable
*oftable
;
5068 free(ofproto
->vlan_bitmap
);
5069 ofproto
->vlan_bitmap
= bitmap_allocate(4096);
5070 ofproto
->vlans_changed
= false;
5072 OFPROTO_FOR_EACH_TABLE (oftable
, ofproto
) {
5073 const struct cls_table
*table
;
5075 HMAP_FOR_EACH (table
, hmap_node
, &oftable
->cls
.tables
) {
5076 if (minimask_get_vid_mask(&table
->mask
) == VLAN_VID_MASK
) {
5077 const struct cls_rule
*rule
;
5079 HMAP_FOR_EACH (rule
, hmap_node
, &table
->rules
) {
5080 uint16_t vid
= miniflow_get_vid(&rule
->match
.flow
);
5081 bitmap_set1(vlan_bitmap
, vid
);
5082 bitmap_set1(ofproto
->vlan_bitmap
, vid
);
5089 /* Returns true if new VLANs have come into use by the flow table since the
5090 * last call to ofproto_get_vlan_usage().
5092 * We don't track when old VLANs stop being used. */
5094 ofproto_has_vlan_usage_changed(const struct ofproto
*ofproto
)
5096 return ofproto
->vlans_changed
;
5099 /* Configures a VLAN splinter binding between the ports identified by OpenFlow
5100 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
5101 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
5102 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
5103 * then the VLAN device is un-enslaved. */
5105 ofproto_port_set_realdev(struct ofproto
*ofproto
, ofp_port_t vlandev_ofp_port
,
5106 ofp_port_t realdev_ofp_port
, int vid
)
5108 struct ofport
*ofport
;
5111 ovs_assert(vlandev_ofp_port
!= realdev_ofp_port
);
5113 ofport
= ofproto_get_port(ofproto
, vlandev_ofp_port
);
5115 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16
,
5116 ofproto
->name
, vlandev_ofp_port
);
5120 if (!ofproto
->ofproto_class
->set_realdev
) {
5121 if (!vlandev_ofp_port
) {
5124 VLOG_WARN("%s: vlan splinters not supported", ofproto
->name
);
5128 error
= ofproto
->ofproto_class
->set_realdev(ofport
, realdev_ofp_port
, vid
);
5130 VLOG_WARN("%s: setting realdev on port %"PRIu16
" (%s) failed (%s)",
5131 ofproto
->name
, vlandev_ofp_port
,
5132 netdev_get_name(ofport
->netdev
), strerror(error
));