2 * Copyright (c) 2009, 2010, 2011 Nicira Networks.
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.
22 #include <sys/socket.h>
24 #include <netinet/in.h>
30 #include "byte-order.h"
32 #include "classifier.h"
35 #include "dynamic-string.h"
36 #include "fail-open.h"
42 #include "mac-learning.h"
43 #include "multipath.h"
49 #include "ofp-print.h"
51 #include "ofproto-sflow.h"
53 #include "openflow/nicira-ext.h"
54 #include "openflow/openflow.h"
55 #include "openvswitch/datapath-protocol.h"
59 #include "poll-loop.h"
64 #include "stream-ssl.h"
68 #include "unaligned.h"
71 #include "vlan-bitmap.h"
74 VLOG_DEFINE_THIS_MODULE(ofproto);
76 COVERAGE_DEFINE(odp_overflow);
77 COVERAGE_DEFINE(ofproto_agg_request);
78 COVERAGE_DEFINE(ofproto_costly_flags);
79 COVERAGE_DEFINE(ofproto_ctlr_action);
80 COVERAGE_DEFINE(ofproto_error);
81 COVERAGE_DEFINE(ofproto_expiration);
82 COVERAGE_DEFINE(ofproto_expired);
83 COVERAGE_DEFINE(ofproto_flows_req);
84 COVERAGE_DEFINE(ofproto_flush);
85 COVERAGE_DEFINE(ofproto_invalidated);
86 COVERAGE_DEFINE(ofproto_no_packet_in);
87 COVERAGE_DEFINE(ofproto_ofp2odp);
88 COVERAGE_DEFINE(ofproto_packet_in);
89 COVERAGE_DEFINE(ofproto_packet_out);
90 COVERAGE_DEFINE(ofproto_queue_req);
91 COVERAGE_DEFINE(ofproto_recv_openflow);
92 COVERAGE_DEFINE(ofproto_reinit_ports);
93 COVERAGE_DEFINE(ofproto_unexpected_rule);
94 COVERAGE_DEFINE(ofproto_uninstallable);
95 COVERAGE_DEFINE(ofproto_update_port);
97 static void ofport_destroy__(struct ofport *);
98 static void ofport_destroy(struct ofport *);
100 static int rule_create(struct ofproto *, const struct cls_rule *,
101 const union ofp_action *, size_t n_actions,
102 uint16_t idle_timeout, uint16_t hard_timeout,
103 ovs_be64 flow_cookie, bool send_flow_removed,
104 struct rule **rulep);
106 static uint64_t pick_datapath_id(const struct ofproto *);
107 static uint64_t pick_fallback_dpid(void);
109 static void ofproto_destroy__(struct ofproto *);
110 static void ofproto_flush_flows__(struct ofproto *);
112 static void ofproto_rule_destroy__(struct rule *);
113 static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
114 static void ofproto_rule_remove(struct rule *);
116 static void handle_openflow(struct ofconn *, struct ofpbuf *);
118 static void update_port(struct ofproto *, const char *devname);
119 static int init_ports(struct ofproto *);
120 static void reinit_ports(struct ofproto *);
122 static void ofproto_unixctl_init(void);
124 /* All registered ofproto classes, in probe order. */
125 static const struct ofproto_class **ofproto_classes;
126 static size_t n_ofproto_classes;
127 static size_t allocated_ofproto_classes;
129 /* Map from dpif name to struct ofproto, for use by unixctl commands. */
130 static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
132 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
135 ofproto_initialize(void)
141 ofproto_class_register(&ofproto_dpif_class);
145 /* 'type' should be a normalized datapath type, as returned by
146 * ofproto_normalize_type(). Returns the corresponding ofproto_class
147 * structure, or a null pointer if there is none registered for 'type'. */
148 static const struct ofproto_class *
149 ofproto_class_find__(const char *type)
153 ofproto_initialize();
154 for (i = 0; i < n_ofproto_classes; i++) {
155 const struct ofproto_class *class = ofproto_classes[i];
160 class->enumerate_types(&types);
161 found = sset_contains(&types, type);
162 sset_destroy(&types);
168 VLOG_WARN("unknown datapath type %s", type);
172 /* Registers a new ofproto class. After successful registration, new ofprotos
173 * of that type can be created using ofproto_create(). */
175 ofproto_class_register(const struct ofproto_class *new_class)
179 for (i = 0; i < n_ofproto_classes; i++) {
180 if (ofproto_classes[i] == new_class) {
185 if (n_ofproto_classes >= allocated_ofproto_classes) {
186 ofproto_classes = x2nrealloc(ofproto_classes,
187 &allocated_ofproto_classes,
188 sizeof *ofproto_classes);
190 ofproto_classes[n_ofproto_classes++] = new_class;
194 /* Unregisters a datapath provider. 'type' must have been previously
195 * registered and not currently be in use by any ofprotos. After
196 * unregistration new datapaths of that type cannot be opened using
197 * ofproto_create(). */
199 ofproto_class_unregister(const struct ofproto_class *class)
203 for (i = 0; i < n_ofproto_classes; i++) {
204 if (ofproto_classes[i] == class) {
205 for (i++; i < n_ofproto_classes; i++) {
206 ofproto_classes[i - 1] = ofproto_classes[i];
212 VLOG_WARN("attempted to unregister an ofproto class that is not "
217 /* Clears 'types' and enumerates all registered ofproto types into it. The
218 * caller must first initialize the sset. */
220 ofproto_enumerate_types(struct sset *types)
224 ofproto_initialize();
225 for (i = 0; i < n_ofproto_classes; i++) {
226 ofproto_classes[i]->enumerate_types(types);
230 /* Returns the fully spelled out name for the given ofproto 'type'.
232 * Normalized type string can be compared with strcmp(). Unnormalized type
233 * string might be the same even if they have different spellings. */
235 ofproto_normalize_type(const char *type)
237 return type && type[0] ? type : "system";
240 /* Clears 'names' and enumerates the names of all known created ofprotos with
241 * the given 'type'. The caller must first initialize the sset. Returns 0 if
242 * successful, otherwise a positive errno value.
244 * Some kinds of datapaths might not be practically enumerable. This is not
245 * considered an error. */
247 ofproto_enumerate_names(const char *type, struct sset *names)
249 const struct ofproto_class *class = ofproto_class_find__(type);
250 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
254 ofproto_create(const char *datapath_name, const char *datapath_type,
255 struct ofproto **ofprotop)
257 const struct ofproto_class *class;
258 struct ofproto *ofproto;
263 ofproto_initialize();
264 ofproto_unixctl_init();
266 datapath_type = ofproto_normalize_type(datapath_type);
267 class = ofproto_class_find__(datapath_type);
269 VLOG_WARN("could not create datapath %s of unknown type %s",
270 datapath_name, datapath_type);
274 ofproto = class->alloc();
276 VLOG_ERR("failed to allocate datapath %s of type %s",
277 datapath_name, datapath_type);
282 memset(ofproto, 0, sizeof *ofproto);
283 ofproto->ofproto_class = class;
284 ofproto->name = xstrdup(datapath_name);
285 ofproto->type = xstrdup(datapath_type);
286 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
287 hash_string(ofproto->name, 0));
288 ofproto->datapath_id = 0;
289 ofproto->fallback_dpid = pick_fallback_dpid();
290 ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC);
291 ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC);
292 ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC);
293 ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC);
294 ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC);
295 ofproto->netdev_monitor = netdev_monitor_create();
296 hmap_init(&ofproto->ports);
297 shash_init(&ofproto->port_by_name);
298 classifier_init(&ofproto->cls);
299 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
301 error = ofproto->ofproto_class->construct(ofproto);
303 VLOG_ERR("failed to open datapath %s: %s",
304 datapath_name, strerror(error));
305 ofproto_destroy__(ofproto);
309 ofproto->datapath_id = pick_datapath_id(ofproto);
310 VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id);
318 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
320 uint64_t old_dpid = p->datapath_id;
321 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
322 if (p->datapath_id != old_dpid) {
323 VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id);
325 /* Force all active connections to reconnect, since there is no way to
326 * notify a controller that the datapath ID has changed. */
327 ofproto_reconnect_controllers(p);
332 ofproto_set_controllers(struct ofproto *p,
333 const struct ofproto_controller *controllers,
334 size_t n_controllers)
336 connmgr_set_controllers(p->connmgr, controllers, n_controllers);
340 ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
342 connmgr_set_fail_mode(p->connmgr, fail_mode);
345 /* Drops the connections between 'ofproto' and all of its controllers, forcing
346 * them to reconnect. */
348 ofproto_reconnect_controllers(struct ofproto *ofproto)
350 connmgr_reconnect(ofproto->connmgr);
353 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
354 * in-band control should guarantee access, in the same way that in-band
355 * control guarantees access to OpenFlow controllers. */
357 ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
358 const struct sockaddr_in *extras, size_t n)
360 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
363 /* Sets the OpenFlow queue used by flows set up by in-band control on
364 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
365 * flows will use the default queue. */
367 ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
369 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
373 ofproto_set_desc(struct ofproto *p,
374 const char *mfr_desc, const char *hw_desc,
375 const char *sw_desc, const char *serial_desc,
378 struct ofp_desc_stats *ods;
381 if (strlen(mfr_desc) >= sizeof ods->mfr_desc) {
382 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
383 sizeof ods->mfr_desc);
386 p->mfr_desc = xstrdup(mfr_desc);
389 if (strlen(hw_desc) >= sizeof ods->hw_desc) {
390 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
391 sizeof ods->hw_desc);
394 p->hw_desc = xstrdup(hw_desc);
397 if (strlen(sw_desc) >= sizeof ods->sw_desc) {
398 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
399 sizeof ods->sw_desc);
402 p->sw_desc = xstrdup(sw_desc);
405 if (strlen(serial_desc) >= sizeof ods->serial_num) {
406 VLOG_WARN("truncating serial_desc, must be less than %zu "
408 sizeof ods->serial_num);
410 free(p->serial_desc);
411 p->serial_desc = xstrdup(serial_desc);
414 if (strlen(dp_desc) >= sizeof ods->dp_desc) {
415 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
416 sizeof ods->dp_desc);
419 p->dp_desc = xstrdup(dp_desc);
424 ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
426 return connmgr_set_snoops(ofproto->connmgr, snoops);
430 ofproto_set_netflow(struct ofproto *ofproto,
431 const struct netflow_options *nf_options)
433 if (nf_options && sset_is_empty(&nf_options->collectors)) {
437 if (ofproto->ofproto_class->set_netflow) {
438 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
440 return nf_options ? EOPNOTSUPP : 0;
445 ofproto_set_sflow(struct ofproto *ofproto,
446 const struct ofproto_sflow_options *oso)
448 if (oso && sset_is_empty(&oso->targets)) {
452 if (ofproto->ofproto_class->set_sflow) {
453 return ofproto->ofproto_class->set_sflow(ofproto, oso);
455 return oso ? EOPNOTSUPP : 0;
459 /* Connectivity Fault Management configuration. */
461 /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
463 ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port)
465 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
466 if (ofport && ofproto->ofproto_class->set_cfm) {
467 ofproto->ofproto_class->set_cfm(ofport, NULL, NULL, 0);
471 /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
472 * basic configuration from the configuration members in 'cfm', and the set of
473 * remote maintenance points from the 'n_remote_mps' elements in 'remote_mps'.
474 * Ignores the statistics members of 'cfm'.
476 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
478 ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port,
479 const struct cfm *cfm,
480 const uint16_t *remote_mps, size_t n_remote_mps)
482 struct ofport *ofport;
485 ofport = ofproto_get_port(ofproto, ofp_port);
487 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
488 ofproto->name, ofp_port);
492 error = (ofproto->ofproto_class->set_cfm
493 ? ofproto->ofproto_class->set_cfm(ofport, cfm,
494 remote_mps, n_remote_mps)
497 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
498 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
503 /* Returns the connectivity fault management object associated with 'ofp_port'
504 * within 'ofproto', or a null pointer if 'ofproto' does not have a port
505 * 'ofp_port' or if that port does not have CFM configured. The caller must
506 * not modify or destroy the returned object. */
508 ofproto_port_get_cfm(struct ofproto *ofproto, uint16_t ofp_port)
510 struct ofport *ofport;
511 const struct cfm *cfm;
513 ofport = ofproto_get_port(ofproto, ofp_port);
515 && ofproto->ofproto_class->get_cfm
516 && !ofproto->ofproto_class->get_cfm(ofport, &cfm)) ? cfm : NULL;
519 /* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
520 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
521 * 0 if LACP partner information is not current (generally indicating a
522 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
524 ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port)
526 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
527 return (ofport && ofproto->ofproto_class->port_is_lacp_current
528 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
534 /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
535 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
536 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
537 * configuration plus, if there is more than one slave, a bonding
540 * If 'aux' is already registered then this function updates its configuration
541 * to 's'. Otherwise, this function registers a new bundle.
543 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
546 ofproto_bundle_register(struct ofproto *ofproto, void *aux,
547 const struct ofproto_bundle_settings *s)
549 return (ofproto->ofproto_class->bundle_set
550 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
554 /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
555 * If no such bundle has been registered, this has no effect. */
557 ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
559 return ofproto_bundle_register(ofproto, aux, NULL);
563 /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
564 * If 'aux' is already registered then this function updates its configuration
565 * to 's'. Otherwise, this function registers a new mirror.
567 * Mirrors affect only the treatment of packets output to the OFPP_NORMAL
570 ofproto_mirror_register(struct ofproto *ofproto, void *aux,
571 const struct ofproto_mirror_settings *s)
573 return (ofproto->ofproto_class->mirror_set
574 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
578 /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
579 * If no mirror has been registered, this has no effect. */
581 ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
583 return ofproto_mirror_register(ofproto, aux, NULL);
586 /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
587 * which all packets are flooded, instead of using MAC learning. If
588 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
590 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
593 ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
595 return (ofproto->ofproto_class->set_flood_vlans
596 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
600 /* Returns true if 'aux' is a registered bundle that is currently in use as the
601 * output for a mirror. */
603 ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux)
605 return (ofproto->ofproto_class->is_mirror_output_bundle
606 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
611 ofproto_has_snoops(const struct ofproto *ofproto)
613 return connmgr_has_snoops(ofproto->connmgr);
617 ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
619 connmgr_get_snoops(ofproto->connmgr, snoops);
623 ofproto_destroy__(struct ofproto *ofproto)
625 connmgr_destroy(ofproto->connmgr);
627 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
629 free(ofproto->mfr_desc);
630 free(ofproto->hw_desc);
631 free(ofproto->sw_desc);
632 free(ofproto->serial_desc);
633 free(ofproto->dp_desc);
634 netdev_monitor_destroy(ofproto->netdev_monitor);
635 hmap_destroy(&ofproto->ports);
636 shash_destroy(&ofproto->port_by_name);
637 classifier_destroy(&ofproto->cls);
639 ofproto->ofproto_class->dealloc(ofproto);
643 ofproto_destroy(struct ofproto *p)
645 struct ofport *ofport, *next_ofport;
651 ofproto_flush_flows__(p);
652 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
653 hmap_remove(&p->ports, &ofport->hmap_node);
654 ofport_destroy(ofport);
657 p->ofproto_class->destruct(p);
658 ofproto_destroy__(p);
661 /* Destroys the datapath with the respective 'name' and 'type'. With the Linux
662 * kernel datapath, for example, this destroys the datapath in the kernel, and
663 * with the netdev-based datapath, it tears down the data structures that
664 * represent the datapath.
666 * The datapath should not be currently open as an ofproto. */
668 ofproto_delete(const char *name, const char *type)
670 const struct ofproto_class *class = ofproto_class_find__(type);
671 return (!class ? EAFNOSUPPORT
672 : !class->del ? EACCES
673 : class->del(type, name));
677 process_port_change(struct ofproto *ofproto, int error, char *devname)
679 if (error == ENOBUFS) {
680 reinit_ports(ofproto);
682 update_port(ofproto, devname);
688 ofproto_run(struct ofproto *p)
693 error = p->ofproto_class->run(p);
694 if (error == ENODEV) {
695 /* Someone destroyed the datapath behind our back. The caller
696 * better destroy us and give up, because we're just going to
697 * spin from here on out. */
698 static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5);
699 VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally",
704 if (p->ofproto_class->port_poll) {
705 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
706 process_port_change(p, error, devname);
709 while ((error = netdev_monitor_poll(p->netdev_monitor,
710 &devname)) != EAGAIN) {
711 process_port_change(p, error, devname);
714 connmgr_run(p->connmgr, handle_openflow);
720 ofproto_wait(struct ofproto *p)
722 p->ofproto_class->wait(p);
723 if (p->ofproto_class->port_poll_wait) {
724 p->ofproto_class->port_poll_wait(p);
726 netdev_monitor_poll_wait(p->netdev_monitor);
727 connmgr_wait(p->connmgr);
731 ofproto_is_alive(const struct ofproto *p)
733 return connmgr_has_controllers(p->connmgr);
737 ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
740 connmgr_get_controller_info(ofproto->connmgr, info);
744 ofproto_free_ofproto_controller_info(struct shash *info)
746 struct shash_node *node;
748 SHASH_FOR_EACH (node, info) {
749 struct ofproto_controller_info *cinfo = node->data;
750 while (cinfo->pairs.n) {
751 free((char *) cinfo->pairs.values[--cinfo->pairs.n]);
758 /* Makes a deep copy of 'old' into 'port'. */
760 ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
762 port->name = xstrdup(old->name);
763 port->type = xstrdup(old->type);
764 port->ofp_port = old->ofp_port;
767 /* Frees memory allocated to members of 'ofproto_port'.
769 * Do not call this function on an ofproto_port obtained from
770 * ofproto_port_dump_next(): that function retains ownership of the data in the
773 ofproto_port_destroy(struct ofproto_port *ofproto_port)
775 free(ofproto_port->name);
776 free(ofproto_port->type);
779 /* Initializes 'dump' to begin dumping the ports in an ofproto.
781 * This function provides no status indication. An error status for the entire
782 * dump operation is provided when it is completed by calling
783 * ofproto_port_dump_done().
786 ofproto_port_dump_start(struct ofproto_port_dump *dump,
787 const struct ofproto *ofproto)
789 dump->ofproto = ofproto;
790 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
794 /* Attempts to retrieve another port from 'dump', which must have been created
795 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
796 * 'port' and returns true. On failure, returns false.
798 * Failure might indicate an actual error or merely that the last port has been
799 * dumped. An error status for the entire dump operation is provided when it
800 * is completed by calling ofproto_port_dump_done().
802 * The ofproto owns the data stored in 'port'. It will remain valid until at
803 * least the next time 'dump' is passed to ofproto_port_dump_next() or
804 * ofproto_port_dump_done(). */
806 ofproto_port_dump_next(struct ofproto_port_dump *dump,
807 struct ofproto_port *port)
809 const struct ofproto *ofproto = dump->ofproto;
815 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
818 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
824 /* Completes port table dump operation 'dump', which must have been created
825 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
826 * error-free, otherwise a positive errno value describing the problem. */
828 ofproto_port_dump_done(struct ofproto_port_dump *dump)
830 const struct ofproto *ofproto = dump->ofproto;
832 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
835 return dump->error == EOF ? 0 : dump->error;
838 /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0
839 * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp'
840 * is non-null). On failure, returns a positive errno value and sets
841 * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */
843 ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
849 error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port);
851 update_port(ofproto, netdev_get_name(netdev));
854 *ofp_portp = error ? OFPP_NONE : ofp_port;
859 /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
860 * initializes '*port' appropriately; on failure, returns a positive errno
863 * The caller owns the data in 'ofproto_port' and must free it with
864 * ofproto_port_destroy() when it is no longer needed. */
866 ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
867 struct ofproto_port *port)
871 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
873 memset(port, 0, sizeof *port);
878 /* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
879 * Returns 0 if successful, otherwise a positive errno. */
881 ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port)
883 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
884 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
887 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
888 if (!error && ofport) {
889 /* 'name' is the netdev's name and update_port() is going to close the
890 * netdev. Just in case update_port() refers to 'name' after it
891 * destroys 'ofport', make a copy of it around the update_port()
893 char *devname = xstrdup(name);
894 update_port(ofproto, devname);
900 /* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and
901 * performs the 'n_actions' actions in 'actions'. The new flow will not
904 * If cls_rule->priority is in the range of priorities supported by OpenFlow
905 * (0...65535, inclusive) then the flow will be visible to OpenFlow
906 * controllers; otherwise, it will be hidden.
908 * The caller retains ownership of 'cls_rule' and 'actions'. */
910 ofproto_add_flow(struct ofproto *p, const struct cls_rule *cls_rule,
911 const union ofp_action *actions, size_t n_actions)
914 rule_create(p, cls_rule, actions, n_actions, 0, 0, 0, false, &rule);
918 ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target)
922 rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
925 ofproto_rule_remove(rule);
930 ofproto_flush_flows__(struct ofproto *ofproto)
932 struct rule *rule, *next_rule;
933 struct cls_cursor cursor;
935 COVERAGE_INC(ofproto_flush);
937 if (ofproto->ofproto_class->flush) {
938 ofproto->ofproto_class->flush(ofproto);
941 cls_cursor_init(&cursor, &ofproto->cls, NULL);
942 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
943 ofproto_rule_remove(rule);
948 ofproto_flush_flows(struct ofproto *ofproto)
950 ofproto_flush_flows__(ofproto);
951 connmgr_flushed(ofproto->connmgr);
955 reinit_ports(struct ofproto *p)
957 struct ofproto_port_dump dump;
958 struct sset devnames;
959 struct ofport *ofport;
960 struct ofproto_port ofproto_port;
963 COVERAGE_INC(ofproto_reinit_ports);
965 sset_init(&devnames);
966 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
967 sset_add(&devnames, netdev_get_name(ofport->netdev));
969 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
970 sset_add(&devnames, ofproto_port.name);
973 SSET_FOR_EACH (devname, &devnames) {
974 update_port(p, devname);
976 sset_destroy(&devnames);
979 /* Opens and returns a netdev for 'ofproto_port', or a null pointer if the
980 * netdev cannot be opened. On success, also fills in 'opp'. */
981 static struct netdev *
982 ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp)
984 uint32_t curr, advertised, supported, peer;
985 struct netdev_options netdev_options;
986 enum netdev_flags flags;
987 struct netdev *netdev;
990 memset(&netdev_options, 0, sizeof netdev_options);
991 netdev_options.name = ofproto_port->name;
992 netdev_options.type = ofproto_port->type;
993 netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
995 error = netdev_open(&netdev_options, &netdev);
997 VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
998 "cannot be opened (%s)",
999 ofproto_port->name, ofproto_port->ofp_port,
1000 ofproto_port->name, strerror(error));
1004 netdev_get_flags(netdev, &flags);
1005 netdev_get_features(netdev, &curr, &advertised, &supported, &peer);
1007 opp->port_no = htons(ofproto_port->ofp_port);
1008 netdev_get_etheraddr(netdev, opp->hw_addr);
1009 ovs_strzcpy(opp->name, ofproto_port->name, sizeof opp->name);
1010 opp->config = flags & NETDEV_UP ? 0 : htonl(OFPPC_PORT_DOWN);
1011 opp->state = netdev_get_carrier(netdev) ? 0 : htonl(OFPPS_LINK_DOWN);
1012 opp->curr = htonl(curr);
1013 opp->advertised = htonl(advertised);
1014 opp->supported = htonl(supported);
1015 opp->peer = htonl(peer);
1020 /* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
1021 * port number, and 'config' bits other than OFPPC_PORT_DOWN are
1024 ofport_equal(const struct ofp_phy_port *a, const struct ofp_phy_port *b)
1026 BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
1027 return (!memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
1028 && a->state == b->state
1029 && !((a->config ^ b->config) & htonl(OFPPC_PORT_DOWN))
1030 && a->curr == b->curr
1031 && a->advertised == b->advertised
1032 && a->supported == b->supported
1033 && a->peer == b->peer);
1036 /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
1037 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
1038 * one with the same name or port number). */
1040 ofport_install(struct ofproto *p,
1041 struct netdev *netdev, const struct ofp_phy_port *opp)
1043 const char *netdev_name = netdev_get_name(netdev);
1044 struct ofport *ofport;
1047 /* Create ofport. */
1048 ofport = p->ofproto_class->port_alloc();
1053 ofport->ofproto = p;
1054 ofport->netdev = netdev;
1056 ofport->ofp_port = ntohs(opp->port_no);
1058 /* Add port to 'p'. */
1059 netdev_monitor_add(p->netdev_monitor, ofport->netdev);
1060 hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0));
1061 shash_add(&p->port_by_name, netdev_name, ofport);
1063 /* Let the ofproto_class initialize its private data. */
1064 error = p->ofproto_class->port_construct(ofport);
1068 connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD);
1072 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
1073 p->name, netdev_name, strerror(error));
1075 ofport_destroy__(ofport);
1077 netdev_close(netdev);
1081 /* Removes 'ofport' from 'p' and destroys it. */
1083 ofport_remove(struct ofport *ofport)
1085 connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp,
1087 ofport_destroy(ofport);
1090 /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
1093 ofport_remove_with_name(struct ofproto *ofproto, const char *name)
1095 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
1097 ofport_remove(port);
1101 /* Updates 'port' within 'ofproto' with the new 'netdev' and 'opp'.
1103 * Does not handle a name or port number change. The caller must implement
1104 * such a change as a delete followed by an add. */
1106 ofport_modified(struct ofport *port, struct ofp_phy_port *opp)
1108 memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN);
1109 port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN))
1110 | (opp->config & htonl(OFPPC_PORT_DOWN)));
1111 port->opp.state = opp->state;
1112 port->opp.curr = opp->curr;
1113 port->opp.advertised = opp->advertised;
1114 port->opp.supported = opp->supported;
1115 port->opp.peer = opp->peer;
1117 connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY);
1121 ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port)
1123 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
1125 if (port->ofproto->ofproto_class->set_cfm) {
1126 port->ofproto->ofproto_class->set_cfm(port, NULL, NULL, 0);
1128 if (port->ofproto->ofproto_class->bundle_remove) {
1129 port->ofproto->ofproto_class->bundle_remove(port);
1135 ofport_destroy__(struct ofport *port)
1137 struct ofproto *ofproto = port->ofproto;
1138 const char *name = netdev_get_name(port->netdev);
1140 netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
1141 hmap_remove(&ofproto->ports, &port->hmap_node);
1142 shash_delete(&ofproto->port_by_name,
1143 shash_find(&ofproto->port_by_name, name));
1145 netdev_close(port->netdev);
1146 ofproto->ofproto_class->port_dealloc(port);
1150 ofport_destroy(struct ofport *port)
1153 port->ofproto->ofproto_class->port_destruct(port);
1154 ofport_destroy__(port);
1159 ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port)
1161 struct ofport *port;
1163 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node,
1164 hash_int(ofp_port, 0), &ofproto->ports) {
1165 if (port->ofp_port == ofp_port) {
1173 update_port(struct ofproto *ofproto, const char *name)
1175 struct ofproto_port ofproto_port;
1176 struct ofp_phy_port opp;
1177 struct netdev *netdev;
1178 struct ofport *port;
1180 COVERAGE_INC(ofproto_update_port);
1182 /* Fetch 'name''s location and properties from the datapath. */
1183 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
1184 ? ofport_open(&ofproto_port, &opp)
1187 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
1188 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
1189 /* 'name' hasn't changed location. Any properties changed? */
1190 if (!ofport_equal(&port->opp, &opp)) {
1191 ofport_modified(port, &opp);
1194 /* Install the newly opened netdev in case it has changed. */
1195 netdev_monitor_remove(ofproto->netdev_monitor, port->netdev);
1196 netdev_monitor_add(ofproto->netdev_monitor, netdev);
1198 netdev_close(port->netdev);
1199 port->netdev = netdev;
1201 if (port->ofproto->ofproto_class->port_modified) {
1202 port->ofproto->ofproto_class->port_modified(port);
1205 /* If 'port' is nonnull then its name differs from 'name' and thus
1206 * we should delete it. If we think there's a port named 'name'
1207 * then its port number must be wrong now so delete it too. */
1209 ofport_remove(port);
1211 ofport_remove_with_name(ofproto, name);
1212 ofport_install(ofproto, netdev, &opp);
1215 /* Any port named 'name' is gone now. */
1216 ofport_remove_with_name(ofproto, name);
1218 ofproto_port_destroy(&ofproto_port);
1222 init_ports(struct ofproto *p)
1224 struct ofproto_port_dump dump;
1225 struct ofproto_port ofproto_port;
1227 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
1228 uint16_t ofp_port = ofproto_port.ofp_port;
1229 if (ofproto_get_port(p, ofp_port)) {
1230 VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
1232 } else if (shash_find(&p->port_by_name, ofproto_port.name)) {
1233 VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
1236 struct ofp_phy_port opp;
1237 struct netdev *netdev;
1239 netdev = ofport_open(&ofproto_port, &opp);
1241 ofport_install(p, netdev, &opp);
1249 /* Creates a new rule initialized as specified, inserts it into 'ofproto''s
1250 * flow table, and stores the new rule into '*rulep'. Returns 0 on success,
1251 * otherwise a positive errno value or OpenFlow error code. */
1253 rule_create(struct ofproto *ofproto, const struct cls_rule *cls_rule,
1254 const union ofp_action *actions, size_t n_actions,
1255 uint16_t idle_timeout, uint16_t hard_timeout,
1256 ovs_be64 flow_cookie, bool send_flow_removed,
1257 struct rule **rulep)
1262 rule = ofproto->ofproto_class->rule_alloc();
1268 rule->ofproto = ofproto;
1269 rule->cr = *cls_rule;
1270 rule->flow_cookie = flow_cookie;
1271 rule->created = time_msec();
1272 rule->idle_timeout = idle_timeout;
1273 rule->hard_timeout = hard_timeout;
1274 rule->send_flow_removed = send_flow_removed;
1275 if (n_actions > 0) {
1276 rule->actions = xmemdup(actions, n_actions * sizeof *actions);
1278 rule->actions = NULL;
1280 rule->n_actions = n_actions;
1282 error = ofproto->ofproto_class->rule_construct(rule);
1284 ofproto_rule_destroy__(rule);
1292 VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)",
1293 ofproto->name, strerror(error));
1299 ofproto_rule_destroy__(struct rule *rule)
1301 free(rule->actions);
1302 rule->ofproto->ofproto_class->rule_dealloc(rule);
1305 /* Destroys 'rule' and iterates through all of its facets and revalidates them,
1306 * destroying any that no longer has a rule (which is probably all of them).
1308 * The caller must have already removed 'rule' from the classifier. */
1310 ofproto_rule_destroy(struct rule *rule)
1312 rule->ofproto->ofproto_class->rule_destruct(rule);
1313 ofproto_rule_destroy__(rule);
1316 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
1317 * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't
1320 rule_has_out_port(const struct rule *rule, ovs_be16 out_port)
1322 const union ofp_action *oa;
1323 struct actions_iterator i;
1325 if (out_port == htons(OFPP_NONE)) {
1328 for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
1329 oa = actions_next(&i)) {
1330 if (action_outputs_to_port(oa, out_port)) {
1338 ofproto_rule_lookup(struct ofproto *ofproto, const struct flow *flow)
1340 return rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
1343 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
1344 * statistics (or the statistics for one of its facets) appropriately.
1345 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
1347 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
1348 * with statistics for 'packet' either way.
1350 * Takes ownership of 'packet'. */
1352 rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet)
1356 assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in));
1358 flow_extract(packet, 0, in_port, &flow);
1359 return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet);
1362 /* Remove 'rule' from 'ofproto' and free up the associated memory:
1364 * - Removes 'rule' from the classifier.
1366 * - If 'rule' has facets, revalidates them (and possibly uninstalls and
1367 * destroys them), via rule_destroy().
1370 ofproto_rule_remove(struct rule *rule)
1372 rule->ofproto->ofproto_class->rule_remove(rule);
1373 ofproto_rule_destroy(rule);
1376 /* Returns true if 'rule' should be hidden from the controller.
1378 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
1379 * (e.g. by in-band control) and are intentionally hidden from the
1382 rule_is_hidden(const struct rule *rule)
1384 return rule->cr.priority > UINT16_MAX;
1388 send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
1391 struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
1393 COVERAGE_INC(ofproto_error);
1394 ofconn_send_reply(ofconn, buf);
1399 handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
1401 ofconn_send_reply(ofconn, make_echo_reply(oh));
1406 handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
1408 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1409 struct ofp_switch_features *osf;
1411 struct ofport *port;
1413 osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
1414 osf->datapath_id = htonll(ofproto->datapath_id);
1415 osf->n_buffers = htonl(pktbuf_capacity());
1417 osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
1418 OFPC_PORT_STATS | OFPC_ARP_MATCH_IP);
1419 osf->actions = htonl((1u << OFPAT_OUTPUT) |
1420 (1u << OFPAT_SET_VLAN_VID) |
1421 (1u << OFPAT_SET_VLAN_PCP) |
1422 (1u << OFPAT_STRIP_VLAN) |
1423 (1u << OFPAT_SET_DL_SRC) |
1424 (1u << OFPAT_SET_DL_DST) |
1425 (1u << OFPAT_SET_NW_SRC) |
1426 (1u << OFPAT_SET_NW_DST) |
1427 (1u << OFPAT_SET_NW_TOS) |
1428 (1u << OFPAT_SET_TP_SRC) |
1429 (1u << OFPAT_SET_TP_DST) |
1430 (1u << OFPAT_ENQUEUE));
1432 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
1433 ofpbuf_put(buf, &port->opp, sizeof port->opp);
1436 ofconn_send_reply(ofconn, buf);
1441 handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
1443 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1445 struct ofp_switch_config *osc;
1449 /* Figure out flags. */
1450 drop_frags = ofproto->ofproto_class->get_drop_frags(ofproto);
1451 flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
1454 osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
1455 osc->flags = htons(flags);
1456 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
1457 ofconn_send_reply(ofconn, buf);
1463 handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
1465 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1466 uint16_t flags = ntohs(osc->flags);
1468 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
1469 && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) {
1470 switch (flags & OFPC_FRAG_MASK) {
1471 case OFPC_FRAG_NORMAL:
1472 ofproto->ofproto_class->set_drop_frags(ofproto, false);
1474 case OFPC_FRAG_DROP:
1475 ofproto->ofproto_class->set_drop_frags(ofproto, true);
1478 VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
1484 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
1489 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
1490 * error message code (composed with ofp_mkerr()) for the caller to propagate
1491 * upward. Otherwise, returns 0.
1493 * The log message mentions 'msg_type'. */
1495 reject_slave_controller(struct ofconn *ofconn, const const char *msg_type)
1497 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
1498 && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) {
1499 static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5);
1500 VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller",
1503 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
1510 handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
1512 struct ofproto *p = ofconn_get_ofproto(ofconn);
1513 struct ofp_packet_out *opo;
1514 struct ofpbuf payload, *buffer;
1515 union ofp_action *ofp_actions;
1516 struct ofpbuf request;
1518 size_t n_ofp_actions;
1522 COVERAGE_INC(ofproto_packet_out);
1524 error = reject_slave_controller(ofconn, "OFPT_PACKET_OUT");
1529 /* Get ofp_packet_out. */
1530 ofpbuf_use_const(&request, oh, ntohs(oh->length));
1531 opo = ofpbuf_pull(&request, offsetof(struct ofp_packet_out, actions));
1534 error = ofputil_pull_actions(&request, ntohs(opo->actions_len),
1535 &ofp_actions, &n_ofp_actions);
1541 if (opo->buffer_id != htonl(UINT32_MAX)) {
1542 error = ofconn_pktbuf_retrieve(ofconn, ntohl(opo->buffer_id),
1544 if (error || !buffer) {
1553 /* Send out packet. */
1554 flow_extract(&payload, 0, ntohs(opo->in_port), &flow);
1555 error = p->ofproto_class->packet_out(p, &payload, &flow,
1556 ofp_actions, n_ofp_actions);
1557 ofpbuf_delete(buffer);
1563 update_port_config(struct ofport *port, ovs_be32 config, ovs_be32 mask)
1565 ovs_be32 old_config = port->opp.config;
1567 mask &= config ^ port->opp.config;
1568 if (mask & htonl(OFPPC_PORT_DOWN)) {
1569 if (config & htonl(OFPPC_PORT_DOWN)) {
1570 netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
1572 netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
1576 port->opp.config ^= mask & (htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP |
1577 OFPPC_NO_FLOOD | OFPPC_NO_FWD |
1578 OFPPC_NO_PACKET_IN));
1579 if (port->opp.config != old_config) {
1580 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
1585 handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
1587 struct ofproto *p = ofconn_get_ofproto(ofconn);
1588 const struct ofp_port_mod *opm = (const struct ofp_port_mod *) oh;
1589 struct ofport *port;
1592 error = reject_slave_controller(ofconn, "OFPT_PORT_MOD");
1597 port = ofproto_get_port(p, ntohs(opm->port_no));
1599 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
1600 } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
1601 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
1603 update_port_config(port, opm->config, opm->mask);
1604 if (opm->advertise) {
1605 netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
1611 static struct ofpbuf *
1612 make_ofp_stats_reply(ovs_be32 xid, ovs_be16 type, size_t body_len)
1614 struct ofp_stats_reply *osr;
1617 msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
1618 osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
1620 osr->flags = htons(0);
1624 static struct ofpbuf *
1625 start_ofp_stats_reply(const struct ofp_header *request, size_t body_len)
1627 const struct ofp_stats_request *osr
1628 = (const struct ofp_stats_request *) request;
1629 return make_ofp_stats_reply(osr->header.xid, osr->type, body_len);
1633 append_ofp_stats_reply(size_t nbytes, struct ofconn *ofconn,
1634 struct ofpbuf **msgp)
1636 struct ofpbuf *msg = *msgp;
1637 assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
1638 if (nbytes + msg->size > UINT16_MAX) {
1639 struct ofp_stats_reply *reply = msg->data;
1640 reply->flags = htons(OFPSF_REPLY_MORE);
1641 *msgp = make_ofp_stats_reply(reply->header.xid, reply->type, nbytes);
1642 ofconn_send_reply(ofconn, msg);
1644 return ofpbuf_put_uninit(*msgp, nbytes);
1647 static struct ofpbuf *
1648 make_nxstats_reply(ovs_be32 xid, ovs_be32 subtype, size_t body_len)
1650 struct nicira_stats_msg *nsm;
1653 msg = ofpbuf_new(MIN(sizeof *nsm + body_len, UINT16_MAX));
1654 nsm = put_openflow_xid(sizeof *nsm, OFPT_STATS_REPLY, xid, msg);
1655 nsm->type = htons(OFPST_VENDOR);
1656 nsm->flags = htons(0);
1657 nsm->vendor = htonl(NX_VENDOR_ID);
1658 nsm->subtype = subtype;
1662 static struct ofpbuf *
1663 start_nxstats_reply(const struct nicira_stats_msg *request, size_t body_len)
1665 return make_nxstats_reply(request->header.xid, request->subtype, body_len);
1669 append_nxstats_reply(size_t nbytes, struct ofconn *ofconn,
1670 struct ofpbuf **msgp)
1672 struct ofpbuf *msg = *msgp;
1673 assert(nbytes <= UINT16_MAX - sizeof(struct nicira_stats_msg));
1674 if (nbytes + msg->size > UINT16_MAX) {
1675 struct nicira_stats_msg *reply = msg->data;
1676 reply->flags = htons(OFPSF_REPLY_MORE);
1677 *msgp = make_nxstats_reply(reply->header.xid, reply->subtype, nbytes);
1678 ofconn_send_reply(ofconn, msg);
1680 ofpbuf_prealloc_tailroom(*msgp, nbytes);
1684 handle_desc_stats_request(struct ofconn *ofconn,
1685 const struct ofp_header *request)
1687 struct ofproto *p = ofconn_get_ofproto(ofconn);
1688 struct ofp_desc_stats *ods;
1691 msg = start_ofp_stats_reply(request, sizeof *ods);
1692 ods = append_ofp_stats_reply(sizeof *ods, ofconn, &msg);
1693 memset(ods, 0, sizeof *ods);
1694 ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc);
1695 ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc);
1696 ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc);
1697 ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num);
1698 ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc);
1699 ofconn_send_reply(ofconn, msg);
1705 handle_table_stats_request(struct ofconn *ofconn,
1706 const struct ofp_header *request)
1708 struct ofproto *p = ofconn_get_ofproto(ofconn);
1709 struct ofp_table_stats *ots;
1712 msg = start_ofp_stats_reply(request, sizeof *ots * 2);
1714 /* Classifier table. */
1715 ots = append_ofp_stats_reply(sizeof *ots, ofconn, &msg);
1716 memset(ots, 0, sizeof *ots);
1717 strcpy(ots->name, "classifier");
1718 ots->wildcards = (ofconn_get_flow_format(ofconn) == NXFF_OPENFLOW10
1719 ? htonl(OFPFW_ALL) : htonl(OVSFW_ALL));
1720 ots->max_entries = htonl(1024 * 1024); /* An arbitrary big number. */
1721 ots->active_count = htonl(classifier_count(&p->cls));
1722 put_32aligned_be64(&ots->lookup_count, htonll(0)); /* XXX */
1723 put_32aligned_be64(&ots->matched_count, htonll(0)); /* XXX */
1725 ofconn_send_reply(ofconn, msg);
1730 append_port_stat(struct ofport *port, struct ofconn *ofconn,
1731 struct ofpbuf **msgp)
1733 struct netdev_stats stats;
1734 struct ofp_port_stats *ops;
1736 /* Intentionally ignore return value, since errors will set
1737 * 'stats' to all-1s, which is correct for OpenFlow, and
1738 * netdev_get_stats() will log errors. */
1739 netdev_get_stats(port->netdev, &stats);
1741 ops = append_ofp_stats_reply(sizeof *ops, ofconn, msgp);
1742 ops->port_no = port->opp.port_no;
1743 memset(ops->pad, 0, sizeof ops->pad);
1744 put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets));
1745 put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets));
1746 put_32aligned_be64(&ops->rx_bytes, htonll(stats.rx_bytes));
1747 put_32aligned_be64(&ops->tx_bytes, htonll(stats.tx_bytes));
1748 put_32aligned_be64(&ops->rx_dropped, htonll(stats.rx_dropped));
1749 put_32aligned_be64(&ops->tx_dropped, htonll(stats.tx_dropped));
1750 put_32aligned_be64(&ops->rx_errors, htonll(stats.rx_errors));
1751 put_32aligned_be64(&ops->tx_errors, htonll(stats.tx_errors));
1752 put_32aligned_be64(&ops->rx_frame_err, htonll(stats.rx_frame_errors));
1753 put_32aligned_be64(&ops->rx_over_err, htonll(stats.rx_over_errors));
1754 put_32aligned_be64(&ops->rx_crc_err, htonll(stats.rx_crc_errors));
1755 put_32aligned_be64(&ops->collisions, htonll(stats.collisions));
1759 handle_port_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
1761 struct ofproto *p = ofconn_get_ofproto(ofconn);
1762 const struct ofp_port_stats_request *psr = ofputil_stats_body(oh);
1763 struct ofp_port_stats *ops;
1765 struct ofport *port;
1767 msg = start_ofp_stats_reply(oh, sizeof *ops * 16);
1768 if (psr->port_no != htons(OFPP_NONE)) {
1769 port = ofproto_get_port(p, ntohs(psr->port_no));
1771 append_port_stat(port, ofconn, &msg);
1774 HMAP_FOR_EACH (port, hmap_node, &p->ports) {
1775 append_port_stat(port, ofconn, &msg);
1779 ofconn_send_reply(ofconn, msg);
1784 calc_flow_duration__(long long int start, uint32_t *sec, uint32_t *nsec)
1786 long long int msecs = time_msec() - start;
1787 *sec = msecs / 1000;
1788 *nsec = (msecs % 1000) * (1000 * 1000);
1792 calc_flow_duration(long long int start, ovs_be32 *sec_be, ovs_be32 *nsec_be)
1796 calc_flow_duration__(start, &sec, &nsec);
1797 *sec_be = htonl(sec);
1798 *nsec_be = htonl(nsec);
1802 put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule,
1803 ovs_be16 out_port, struct ofpbuf **replyp)
1805 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1806 struct ofp_flow_stats *ofs;
1807 uint64_t packet_count, byte_count;
1809 size_t act_len, len;
1811 if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) {
1815 act_len = sizeof *rule->actions * rule->n_actions;
1816 len = offsetof(struct ofp_flow_stats, actions) + act_len;
1818 ofproto->ofproto_class->rule_get_stats(rule, &packet_count, &byte_count);
1820 ofs = append_ofp_stats_reply(len, ofconn, replyp);
1821 ofs->length = htons(len);
1824 ofputil_cls_rule_to_match(&rule->cr, ofconn_get_flow_format(ofconn),
1825 &ofs->match, rule->flow_cookie, &cookie);
1826 put_32aligned_be64(&ofs->cookie, cookie);
1827 calc_flow_duration(rule->created, &ofs->duration_sec, &ofs->duration_nsec);
1828 ofs->priority = htons(rule->cr.priority);
1829 ofs->idle_timeout = htons(rule->idle_timeout);
1830 ofs->hard_timeout = htons(rule->hard_timeout);
1831 memset(ofs->pad2, 0, sizeof ofs->pad2);
1832 put_32aligned_be64(&ofs->packet_count, htonll(packet_count));
1833 put_32aligned_be64(&ofs->byte_count, htonll(byte_count));
1834 if (rule->n_actions > 0) {
1835 memcpy(ofs->actions, rule->actions, act_len);
1840 is_valid_table(uint8_t table_id)
1842 if (table_id == 0 || table_id == 0xff) {
1845 /* It would probably be better to reply with an error but there doesn't
1846 * seem to be any appropriate value, so that might just be
1848 VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8,
1855 handle_flow_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
1857 const struct ofp_flow_stats_request *fsr = ofputil_stats_body(oh);
1858 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1859 struct ofpbuf *reply;
1861 COVERAGE_INC(ofproto_flows_req);
1862 reply = start_ofp_stats_reply(oh, 1024);
1863 if (is_valid_table(fsr->table_id)) {
1864 struct cls_cursor cursor;
1865 struct cls_rule target;
1868 ofputil_cls_rule_from_match(&fsr->match, 0, NXFF_OPENFLOW10, 0,
1870 cls_cursor_init(&cursor, &ofproto->cls, &target);
1871 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
1872 put_ofp_flow_stats(ofconn, rule, fsr->out_port, &reply);
1875 ofconn_send_reply(ofconn, reply);
1881 put_nx_flow_stats(struct ofconn *ofconn, struct rule *rule,
1882 ovs_be16 out_port, struct ofpbuf **replyp)
1884 struct nx_flow_stats *nfs;
1885 uint64_t packet_count, byte_count;
1886 size_t act_len, start_len;
1887 struct ofpbuf *reply;
1889 if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) {
1893 rule->ofproto->ofproto_class->rule_get_stats(rule,
1894 &packet_count, &byte_count);
1896 act_len = sizeof *rule->actions * rule->n_actions;
1898 append_nxstats_reply(sizeof *nfs + NXM_MAX_LEN + act_len, ofconn, replyp);
1899 start_len = (*replyp)->size;
1902 nfs = ofpbuf_put_uninit(reply, sizeof *nfs);
1905 calc_flow_duration(rule->created, &nfs->duration_sec, &nfs->duration_nsec);
1906 nfs->cookie = rule->flow_cookie;
1907 nfs->priority = htons(rule->cr.priority);
1908 nfs->idle_timeout = htons(rule->idle_timeout);
1909 nfs->hard_timeout = htons(rule->hard_timeout);
1910 nfs->match_len = htons(nx_put_match(reply, &rule->cr));
1911 memset(nfs->pad2, 0, sizeof nfs->pad2);
1912 nfs->packet_count = htonll(packet_count);
1913 nfs->byte_count = htonll(byte_count);
1914 if (rule->n_actions > 0) {
1915 ofpbuf_put(reply, rule->actions, act_len);
1917 nfs->length = htons(reply->size - start_len);
1921 handle_nxst_flow(struct ofconn *ofconn, const struct ofp_header *oh)
1923 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
1924 struct nx_flow_stats_request *nfsr;
1925 struct cls_rule target;
1926 struct ofpbuf *reply;
1930 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1932 /* Dissect the message. */
1933 nfsr = ofpbuf_pull(&b, sizeof *nfsr);
1934 error = nx_pull_match(&b, ntohs(nfsr->match_len), 0, &target);
1939 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
1942 COVERAGE_INC(ofproto_flows_req);
1943 reply = start_nxstats_reply(&nfsr->nsm, 1024);
1944 if (is_valid_table(nfsr->table_id)) {
1945 struct cls_cursor cursor;
1948 cls_cursor_init(&cursor, &ofproto->cls, &target);
1949 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
1950 put_nx_flow_stats(ofconn, rule, nfsr->out_port, &reply);
1953 ofconn_send_reply(ofconn, reply);
1959 flow_stats_ds(struct rule *rule, struct ds *results)
1961 uint64_t packet_count, byte_count;
1962 size_t act_len = sizeof *rule->actions * rule->n_actions;
1964 rule->ofproto->ofproto_class->rule_get_stats(rule,
1965 &packet_count, &byte_count);
1967 ds_put_format(results, "duration=%llds, ",
1968 (time_msec() - rule->created) / 1000);
1969 ds_put_format(results, "priority=%u, ", rule->cr.priority);
1970 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
1971 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
1972 cls_rule_format(&rule->cr, results);
1973 ds_put_char(results, ',');
1975 ofp_print_actions(results, &rule->actions->header, act_len);
1977 ds_put_cstr(results, "drop");
1979 ds_put_cstr(results, "\n");
1982 /* Adds a pretty-printed description of all flows to 'results', including
1983 * hidden flows (e.g., set up by in-band control). */
1985 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
1987 struct cls_cursor cursor;
1990 cls_cursor_init(&cursor, &p->cls, NULL);
1991 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
1992 flow_stats_ds(rule, results);
1996 /* Obtains the NetFlow engine type and engine ID for 'ofproto' into
1997 * '*engine_type' and '*engine_id', respectively. */
1999 ofproto_get_netflow_ids(const struct ofproto *ofproto,
2000 uint8_t *engine_type, uint8_t *engine_id)
2002 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
2006 query_aggregate_stats(struct ofproto *ofproto, struct cls_rule *target,
2007 ovs_be16 out_port, uint8_t table_id,
2008 struct ofp_aggregate_stats_reply *oasr)
2010 uint64_t total_packets = 0;
2011 uint64_t total_bytes = 0;
2014 COVERAGE_INC(ofproto_agg_request);
2016 if (is_valid_table(table_id)) {
2017 struct cls_cursor cursor;
2020 cls_cursor_init(&cursor, &ofproto->cls, target);
2021 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
2022 if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) {
2023 uint64_t packet_count;
2024 uint64_t byte_count;
2026 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
2029 total_packets += packet_count;
2030 total_bytes += byte_count;
2036 oasr->flow_count = htonl(n_flows);
2037 put_32aligned_be64(&oasr->packet_count, htonll(total_packets));
2038 put_32aligned_be64(&oasr->byte_count, htonll(total_bytes));
2039 memset(oasr->pad, 0, sizeof oasr->pad);
2043 handle_aggregate_stats_request(struct ofconn *ofconn,
2044 const struct ofp_header *oh)
2046 const struct ofp_aggregate_stats_request *request = ofputil_stats_body(oh);
2047 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2048 struct ofp_aggregate_stats_reply *reply;
2049 struct cls_rule target;
2052 ofputil_cls_rule_from_match(&request->match, 0, NXFF_OPENFLOW10, 0,
2055 msg = start_ofp_stats_reply(oh, sizeof *reply);
2056 reply = append_ofp_stats_reply(sizeof *reply, ofconn, &msg);
2057 query_aggregate_stats(ofproto, &target, request->out_port,
2058 request->table_id, reply);
2059 ofconn_send_reply(ofconn, msg);
2064 handle_nxst_aggregate(struct ofconn *ofconn, const struct ofp_header *oh)
2066 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2067 struct nx_aggregate_stats_request *request;
2068 struct ofp_aggregate_stats_reply *reply;
2069 struct cls_rule target;
2074 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2076 /* Dissect the message. */
2077 request = ofpbuf_pull(&b, sizeof *request);
2078 error = nx_pull_match(&b, ntohs(request->match_len), 0, &target);
2083 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
2087 COVERAGE_INC(ofproto_flows_req);
2088 buf = start_nxstats_reply(&request->nsm, sizeof *reply);
2089 reply = ofpbuf_put_uninit(buf, sizeof *reply);
2090 query_aggregate_stats(ofproto, &target, request->out_port,
2091 request->table_id, reply);
2092 ofconn_send_reply(ofconn, buf);
2097 struct queue_stats_cbdata {
2098 struct ofconn *ofconn;
2099 struct ofport *ofport;
2104 put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
2105 const struct netdev_queue_stats *stats)
2107 struct ofp_queue_stats *reply;
2109 reply = append_ofp_stats_reply(sizeof *reply, cbdata->ofconn, &cbdata->msg);
2110 reply->port_no = cbdata->ofport->opp.port_no;
2111 memset(reply->pad, 0, sizeof reply->pad);
2112 reply->queue_id = htonl(queue_id);
2113 put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes));
2114 put_32aligned_be64(&reply->tx_packets, htonll(stats->tx_packets));
2115 put_32aligned_be64(&reply->tx_errors, htonll(stats->tx_errors));
2119 handle_queue_stats_dump_cb(uint32_t queue_id,
2120 struct netdev_queue_stats *stats,
2123 struct queue_stats_cbdata *cbdata = cbdata_;
2125 put_queue_stats(cbdata, queue_id, stats);
2129 handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
2130 struct queue_stats_cbdata *cbdata)
2132 cbdata->ofport = port;
2133 if (queue_id == OFPQ_ALL) {
2134 netdev_dump_queue_stats(port->netdev,
2135 handle_queue_stats_dump_cb, cbdata);
2137 struct netdev_queue_stats stats;
2139 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
2140 put_queue_stats(cbdata, queue_id, &stats);
2146 handle_queue_stats_request(struct ofconn *ofconn, const struct ofp_header *oh)
2148 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
2149 const struct ofp_queue_stats_request *qsr;
2150 struct queue_stats_cbdata cbdata;
2151 struct ofport *port;
2152 unsigned int port_no;
2155 qsr = ofputil_stats_body(oh);
2157 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN);
2160 COVERAGE_INC(ofproto_queue_req);
2162 cbdata.ofconn = ofconn;
2163 cbdata.msg = start_ofp_stats_reply(oh, 128);
2165 port_no = ntohs(qsr->port_no);
2166 queue_id = ntohl(qsr->queue_id);
2167 if (port_no == OFPP_ALL) {
2168 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
2169 handle_queue_stats_for_port(port, queue_id, &cbdata);
2171 } else if (port_no < OFPP_MAX) {
2172 port = ofproto_get_port(ofproto, port_no);
2174 handle_queue_stats_for_port(port, queue_id, &cbdata);
2177 ofpbuf_delete(cbdata.msg);
2178 return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT);
2180 ofconn_send_reply(ofconn, cbdata.msg);
2185 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
2186 * in which no matching flow already exists in the flow table.
2188 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
2189 * ofp_actions, to the ofproto's flow table. Returns 0 on success or an
2190 * OpenFlow error code as encoded by ofp_mkerr() on failure.
2192 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
2195 add_flow(struct ofconn *ofconn, struct flow_mod *fm)
2197 struct ofproto *p = ofconn_get_ofproto(ofconn);
2198 struct ofpbuf *packet;
2204 if (fm->flags & OFPFF_CHECK_OVERLAP
2205 && classifier_rule_overlaps(&p->cls, &fm->cr)) {
2206 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP);
2209 buf_err = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id, &packet, &in_port);
2210 error = rule_create(p, &fm->cr, fm->actions, fm->n_actions,
2211 fm->idle_timeout, fm->hard_timeout, fm->cookie,
2212 fm->flags & OFPFF_SEND_FLOW_REM, &rule);
2214 ofpbuf_delete(packet);
2220 return rule_execute(rule, in_port, packet);
2225 static struct rule *
2226 find_flow_strict(struct ofproto *p, const struct flow_mod *fm)
2228 return rule_from_cls_rule(classifier_find_rule_exactly(&p->cls, &fm->cr));
2232 send_buffered_packet(struct ofconn *ofconn,
2233 struct rule *rule, uint32_t buffer_id)
2235 struct ofpbuf *packet;
2239 if (buffer_id == UINT32_MAX) {
2243 error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port);
2248 return rule_execute(rule, in_port, packet);
2251 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
2253 struct modify_flows_cbdata {
2254 struct ofproto *ofproto;
2255 const struct flow_mod *fm;
2259 static int modify_flow(const struct flow_mod *, struct rule *);
2261 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
2262 * encoded by ofp_mkerr() on failure.
2264 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
2267 modify_flows_loose(struct ofconn *ofconn, struct flow_mod *fm)
2269 struct ofproto *p = ofconn_get_ofproto(ofconn);
2270 struct rule *match = NULL;
2271 struct cls_cursor cursor;
2276 cls_cursor_init(&cursor, &p->cls, &fm->cr);
2277 CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
2278 if (!rule_is_hidden(rule)) {
2279 int retval = modify_flow(fm, rule);
2291 /* This credits the packet to whichever flow happened to match last.
2292 * That's weird. Maybe we should do a lookup for the flow that
2293 * actually matches the packet? Who knows. */
2294 send_buffered_packet(ofconn, match, fm->buffer_id);
2297 return add_flow(ofconn, fm);
2301 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
2302 * code as encoded by ofp_mkerr() on failure.
2304 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
2307 modify_flow_strict(struct ofconn *ofconn, struct flow_mod *fm)
2309 struct ofproto *p = ofconn_get_ofproto(ofconn);
2310 struct rule *rule = find_flow_strict(p, fm);
2311 if (rule && !rule_is_hidden(rule)) {
2312 int error = modify_flow(fm, rule);
2314 error = send_buffered_packet(ofconn, rule, fm->buffer_id);
2318 return add_flow(ofconn, fm);
2322 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
2323 * been identified as a flow to be modified, by changing the rule's actions to
2324 * match those in 'ofm' (which is followed by 'n_actions' ofp_action[]
2327 modify_flow(const struct flow_mod *fm, struct rule *rule)
2329 size_t actions_len = fm->n_actions * sizeof *rule->actions;
2332 if (fm->n_actions == rule->n_actions
2334 || !memcmp(fm->actions, rule->actions, actions_len))) {
2337 error = rule->ofproto->ofproto_class->rule_modify_actions(
2338 rule, fm->actions, fm->n_actions);
2340 free(rule->actions);
2341 rule->actions = (fm->n_actions
2342 ? xmemdup(fm->actions, actions_len)
2344 rule->n_actions = fm->n_actions;
2349 rule->flow_cookie = fm->cookie;
2355 /* OFPFC_DELETE implementation. */
2357 static void delete_flow(struct rule *, ovs_be16 out_port);
2359 /* Implements OFPFC_DELETE. */
2361 delete_flows_loose(struct ofproto *p, const struct flow_mod *fm)
2363 struct rule *rule, *next_rule;
2364 struct cls_cursor cursor;
2366 cls_cursor_init(&cursor, &p->cls, &fm->cr);
2367 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
2368 delete_flow(rule, htons(fm->out_port));
2372 /* Implements OFPFC_DELETE_STRICT. */
2374 delete_flow_strict(struct ofproto *p, struct flow_mod *fm)
2376 struct rule *rule = find_flow_strict(p, fm);
2378 delete_flow(rule, htons(fm->out_port));
2382 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
2383 * been identified as a flow to delete from 'p''s flow table, by deleting the
2384 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
2387 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
2388 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
2389 * specified 'out_port'. */
2391 delete_flow(struct rule *rule, ovs_be16 out_port)
2393 if (rule_is_hidden(rule)) {
2397 if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) {
2401 ofproto_rule_send_removed(rule, OFPRR_DELETE);
2402 ofproto_rule_remove(rule);
2406 ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
2408 struct ofputil_flow_removed fr;
2410 if (rule_is_hidden(rule) || !rule->send_flow_removed) {
2415 fr.cookie = rule->flow_cookie;
2417 calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec);
2418 fr.idle_timeout = rule->idle_timeout;
2419 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
2422 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
2425 /* Sends an OpenFlow "flow removed" message with the given 'reason' (either
2426 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
2429 * ofproto implementation ->run() functions should use this function to expire
2430 * OpenFlow flows. */
2432 ofproto_rule_expire(struct rule *rule, uint8_t reason)
2434 assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT);
2435 ofproto_rule_send_removed(rule, reason);
2436 ofproto_rule_remove(rule);
2440 handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
2442 struct ofproto *p = ofconn_get_ofproto(ofconn);
2446 error = reject_slave_controller(ofconn, "flow_mod");
2451 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_flow_format(ofconn));
2456 /* We do not support the emergency flow cache. It will hopefully get
2457 * dropped from OpenFlow in the near future. */
2458 if (fm.flags & OFPFF_EMERG) {
2459 /* There isn't a good fit for an error code, so just state that the
2460 * flow table is full. */
2461 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL);
2464 switch (fm.command) {
2466 return add_flow(ofconn, &fm);
2469 return modify_flows_loose(ofconn, &fm);
2471 case OFPFC_MODIFY_STRICT:
2472 return modify_flow_strict(ofconn, &fm);
2475 delete_flows_loose(p, &fm);
2478 case OFPFC_DELETE_STRICT:
2479 delete_flow_strict(p, &fm);
2483 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
2488 handle_tun_id_from_cookie(struct ofconn *ofconn, const struct ofp_header *oh)
2490 const struct nxt_tun_id_cookie *msg
2491 = (const struct nxt_tun_id_cookie *) oh;
2492 enum nx_flow_format flow_format;
2494 flow_format = msg->set ? NXFF_TUN_ID_FROM_COOKIE : NXFF_OPENFLOW10;
2495 ofconn_set_flow_format(ofconn, flow_format);
2501 handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
2503 struct nx_role_request *nrr = (struct nx_role_request *) oh;
2504 struct nx_role_request *reply;
2508 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY) {
2509 VLOG_WARN_RL(&rl, "ignoring role request on service connection");
2510 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
2513 role = ntohl(nrr->role);
2514 if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER
2515 && role != NX_ROLE_SLAVE) {
2516 VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role);
2518 /* There's no good error code for this. */
2519 return ofp_mkerr(OFPET_BAD_REQUEST, -1);
2522 ofconn_set_role(ofconn, role);
2524 reply = make_nxmsg_xid(sizeof *reply, NXT_ROLE_REPLY, oh->xid, &buf);
2525 reply->role = htonl(role);
2526 ofconn_send_reply(ofconn, buf);
2532 handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
2534 const struct nxt_set_flow_format *msg
2535 = (const struct nxt_set_flow_format *) oh;
2538 format = ntohl(msg->format);
2539 if (format == NXFF_OPENFLOW10
2540 || format == NXFF_TUN_ID_FROM_COOKIE
2541 || format == NXFF_NXM) {
2542 ofconn_set_flow_format(ofconn, format);
2545 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM);
2550 handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
2552 struct ofp_header *ob;
2555 /* Currently, everything executes synchronously, so we can just
2556 * immediately send the barrier reply. */
2557 ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf);
2558 ofconn_send_reply(ofconn, buf);
2563 handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
2565 const struct ofp_header *oh = msg->data;
2566 const struct ofputil_msg_type *type;
2569 error = ofputil_decode_msg_type(oh, &type);
2574 switch (ofputil_msg_type_code(type)) {
2575 /* OpenFlow requests. */
2576 case OFPUTIL_OFPT_ECHO_REQUEST:
2577 return handle_echo_request(ofconn, oh);
2579 case OFPUTIL_OFPT_FEATURES_REQUEST:
2580 return handle_features_request(ofconn, oh);
2582 case OFPUTIL_OFPT_GET_CONFIG_REQUEST:
2583 return handle_get_config_request(ofconn, oh);
2585 case OFPUTIL_OFPT_SET_CONFIG:
2586 return handle_set_config(ofconn, msg->data);
2588 case OFPUTIL_OFPT_PACKET_OUT:
2589 return handle_packet_out(ofconn, oh);
2591 case OFPUTIL_OFPT_PORT_MOD:
2592 return handle_port_mod(ofconn, oh);
2594 case OFPUTIL_OFPT_FLOW_MOD:
2595 return handle_flow_mod(ofconn, oh);
2597 case OFPUTIL_OFPT_BARRIER_REQUEST:
2598 return handle_barrier_request(ofconn, oh);
2600 /* OpenFlow replies. */
2601 case OFPUTIL_OFPT_ECHO_REPLY:
2604 /* Nicira extension requests. */
2605 case OFPUTIL_NXT_TUN_ID_FROM_COOKIE:
2606 return handle_tun_id_from_cookie(ofconn, oh);
2608 case OFPUTIL_NXT_ROLE_REQUEST:
2609 return handle_role_request(ofconn, oh);
2611 case OFPUTIL_NXT_SET_FLOW_FORMAT:
2612 return handle_nxt_set_flow_format(ofconn, oh);
2614 case OFPUTIL_NXT_FLOW_MOD:
2615 return handle_flow_mod(ofconn, oh);
2617 /* OpenFlow statistics requests. */
2618 case OFPUTIL_OFPST_DESC_REQUEST:
2619 return handle_desc_stats_request(ofconn, oh);
2621 case OFPUTIL_OFPST_FLOW_REQUEST:
2622 return handle_flow_stats_request(ofconn, oh);
2624 case OFPUTIL_OFPST_AGGREGATE_REQUEST:
2625 return handle_aggregate_stats_request(ofconn, oh);
2627 case OFPUTIL_OFPST_TABLE_REQUEST:
2628 return handle_table_stats_request(ofconn, oh);
2630 case OFPUTIL_OFPST_PORT_REQUEST:
2631 return handle_port_stats_request(ofconn, oh);
2633 case OFPUTIL_OFPST_QUEUE_REQUEST:
2634 return handle_queue_stats_request(ofconn, oh);
2636 /* Nicira extension statistics requests. */
2637 case OFPUTIL_NXST_FLOW_REQUEST:
2638 return handle_nxst_flow(ofconn, oh);
2640 case OFPUTIL_NXST_AGGREGATE_REQUEST:
2641 return handle_nxst_aggregate(ofconn, oh);
2643 case OFPUTIL_INVALID:
2644 case OFPUTIL_OFPT_HELLO:
2645 case OFPUTIL_OFPT_ERROR:
2646 case OFPUTIL_OFPT_FEATURES_REPLY:
2647 case OFPUTIL_OFPT_GET_CONFIG_REPLY:
2648 case OFPUTIL_OFPT_PACKET_IN:
2649 case OFPUTIL_OFPT_FLOW_REMOVED:
2650 case OFPUTIL_OFPT_PORT_STATUS:
2651 case OFPUTIL_OFPT_BARRIER_REPLY:
2652 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST:
2653 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY:
2654 case OFPUTIL_OFPST_DESC_REPLY:
2655 case OFPUTIL_OFPST_FLOW_REPLY:
2656 case OFPUTIL_OFPST_QUEUE_REPLY:
2657 case OFPUTIL_OFPST_PORT_REPLY:
2658 case OFPUTIL_OFPST_TABLE_REPLY:
2659 case OFPUTIL_OFPST_AGGREGATE_REPLY:
2660 case OFPUTIL_NXT_ROLE_REPLY:
2661 case OFPUTIL_NXT_FLOW_REMOVED:
2662 case OFPUTIL_NXST_FLOW_REPLY:
2663 case OFPUTIL_NXST_AGGREGATE_REPLY:
2665 if (VLOG_IS_WARN_ENABLED()) {
2666 char *s = ofp_to_string(oh, ntohs(oh->length), 2);
2667 VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
2670 if (oh->type == OFPT_STATS_REQUEST || oh->type == OFPT_STATS_REPLY) {
2671 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
2673 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
2679 handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg)
2681 int error = handle_openflow__(ofconn, ofp_msg);
2683 send_error_oh(ofconn, ofp_msg->data, error);
2685 COVERAGE_INC(ofproto_recv_openflow);
2689 pick_datapath_id(const struct ofproto *ofproto)
2691 const struct ofport *port;
2693 port = ofproto_get_port(ofproto, OFPP_LOCAL);
2695 uint8_t ea[ETH_ADDR_LEN];
2698 error = netdev_get_etheraddr(port->netdev, ea);
2700 return eth_addr_to_uint64(ea);
2702 VLOG_WARN("could not get MAC address for %s (%s)",
2703 netdev_get_name(port->netdev), strerror(error));
2705 return ofproto->fallback_dpid;
2709 pick_fallback_dpid(void)
2711 uint8_t ea[ETH_ADDR_LEN];
2712 eth_addr_nicira_random(ea);
2713 return eth_addr_to_uint64(ea);
2716 /* unixctl commands. */
2719 ofproto_lookup(const char *name)
2721 struct ofproto *ofproto;
2723 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
2725 if (!strcmp(ofproto->name, name)) {
2733 ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED,
2734 void *aux OVS_UNUSED)
2736 struct ofproto *ofproto;
2740 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
2741 ds_put_format(&results, "%s\n", ofproto->name);
2743 unixctl_command_reply(conn, 200, ds_cstr(&results));
2744 ds_destroy(&results);
2748 ofproto_unixctl_init(void)
2750 static bool registered;
2756 unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL);