2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofproto/ofproto-dpif.h"
20 #include "ofproto/ofproto-provider.h"
27 #include "byte-order.h"
32 #include "dynamic-string.h"
33 #include "fail-open.h"
34 #include "guarded-list.h"
38 #include "mac-learning.h"
39 #include "meta-flow.h"
40 #include "multipath.h"
41 #include "netdev-vport.h"
46 #include "odp-execute.h"
49 #include "ofp-actions.h"
50 #include "ofp-parse.h"
51 #include "ofp-print.h"
52 #include "ofproto-dpif-governor.h"
53 #include "ofproto-dpif-ipfix.h"
54 #include "ofproto-dpif-mirror.h"
55 #include "ofproto-dpif-monitor.h"
56 #include "ofproto-dpif-sflow.h"
57 #include "ofproto-dpif-upcall.h"
58 #include "ofproto-dpif-xlate.h"
59 #include "poll-loop.h"
64 #include "unaligned.h"
66 #include "vlan-bitmap.h"
69 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
71 COVERAGE_DEFINE(ofproto_dpif_expired);
72 COVERAGE_DEFINE(facet_revalidate);
73 COVERAGE_DEFINE(facet_unexpected);
74 COVERAGE_DEFINE(facet_create);
75 COVERAGE_DEFINE(facet_remove);
76 COVERAGE_DEFINE(subfacet_create);
77 COVERAGE_DEFINE(subfacet_destroy);
78 COVERAGE_DEFINE(subfacet_install_fail);
79 COVERAGE_DEFINE(packet_in_overflow);
81 /* Number of implemented OpenFlow tables. */
82 enum { N_TABLES = 255 };
83 enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */
84 BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
94 * - Do include packets and bytes from facets that have been deleted or
95 * whose own statistics have been folded into the rule.
97 * - Do include packets and bytes sent "by hand" that were accounted to
98 * the rule without any facet being involved (this is a rare corner
99 * case in rule_execute()).
101 * - Do not include packet or bytes that can be obtained from any facet's
102 * packet_count or byte_count member or that can be obtained from the
103 * datapath by, e.g., dpif_flow_get() for any subfacet.
105 struct ovs_mutex stats_mutex;
106 uint64_t packet_count OVS_GUARDED; /* Number of packets received. */
107 uint64_t byte_count OVS_GUARDED; /* Number of bytes received. */
110 static void rule_get_stats(struct rule *, uint64_t *packets, uint64_t *bytes);
111 static struct rule_dpif *rule_dpif_cast(const struct rule *);
118 * - Do include packets and bytes from facets that have been deleted or
119 * whose own statistics have been folded into the rule.
121 * - Do include packets and bytes sent "by hand" that were accounted to
122 * the rule without any facet being involved (this is a rare corner
123 * case in rule_execute()).
125 * - Do not include packet or bytes that can be obtained from any facet's
126 * packet_count or byte_count member or that can be obtained from the
127 * datapath by, e.g., dpif_flow_get() for any subfacet.
129 struct ovs_mutex stats_mutex;
130 uint64_t packet_count OVS_GUARDED; /* Number of packets received. */
131 uint64_t byte_count OVS_GUARDED; /* Number of bytes received. */
132 struct bucket_counter *bucket_stats OVS_GUARDED; /* Bucket statistics. */
136 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
137 struct ofproto_dpif *ofproto; /* Owning ofproto. */
138 void *aux; /* Key supplied by ofproto's client. */
139 char *name; /* Identifier for log messages. */
142 struct list ports; /* Contains "struct ofport"s. */
143 enum port_vlan_mode vlan_mode; /* VLAN mode */
144 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
145 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
146 * NULL if all VLANs are trunked. */
147 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
148 struct bond *bond; /* Nonnull iff more than one port. */
149 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
152 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
155 static void bundle_remove(struct ofport *);
156 static void bundle_update(struct ofbundle *);
157 static void bundle_destroy(struct ofbundle *);
158 static void bundle_del_port(struct ofport_dpif *);
159 static void bundle_run(struct ofbundle *);
160 static void bundle_wait(struct ofbundle *);
162 static void stp_run(struct ofproto_dpif *ofproto);
163 static void stp_wait(struct ofproto_dpif *ofproto);
164 static int set_stp_port(struct ofport *,
165 const struct ofproto_port_stp_settings *);
167 static void compose_slow_path(const struct ofproto_dpif *, const struct flow *,
168 enum slow_path_reason,
169 uint64_t *stub, size_t stub_size,
170 const struct nlattr **actionsp,
171 size_t *actions_lenp);
173 /* A subfacet (see "struct subfacet" below) has three possible installation
176 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
177 * case just after the subfacet is created, just before the subfacet is
178 * destroyed, or if the datapath returns an error when we try to install a
181 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
183 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
184 * ofproto_dpif is installed in the datapath.
187 SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */
188 SF_FAST_PATH, /* Full actions are installed. */
189 SF_SLOW_PATH, /* Send-to-userspace action is installed. */
192 /* A dpif flow and actions associated with a facet.
194 * See also the large comment on struct facet. */
197 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
198 struct list list_node; /* In struct facet's 'facets' list. */
199 struct facet *facet; /* Owning facet. */
200 struct dpif_backer *backer; /* Owning backer. */
205 long long int used; /* Time last used; time created if not used. */
206 long long int created; /* Time created. */
208 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
209 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
211 enum subfacet_path path; /* Installed in datapath? */
214 #define SUBFACET_DESTROY_MAX_BATCH 50
216 static struct subfacet *subfacet_create(struct facet *, struct flow_miss *,
218 static struct subfacet *subfacet_find(struct dpif_backer *,
219 const struct nlattr *key, size_t key_len,
221 static void subfacet_destroy(struct subfacet *);
222 static void subfacet_destroy__(struct subfacet *);
223 static void subfacet_destroy_batch(struct dpif_backer *,
224 struct subfacet **, int n);
225 static void subfacet_reset_dp_stats(struct subfacet *,
226 struct dpif_flow_stats *);
227 static void subfacet_update_stats(struct subfacet *,
228 const struct dpif_flow_stats *);
229 static int subfacet_install(struct subfacet *,
230 const struct ofpbuf *odp_actions,
231 struct dpif_flow_stats *);
232 static void subfacet_uninstall(struct subfacet *);
234 /* A unique, non-overlapping instantiation of an OpenFlow flow.
236 * A facet associates a "struct flow", which represents the Open vSwitch
237 * userspace idea of an exact-match flow, with one or more subfacets.
238 * While the facet is created based on an exact-match flow, it is stored
239 * within the ofproto based on the wildcards that could be expressed
240 * based on the flow table and other configuration. (See the 'wc'
241 * description in "struct xlate_out" for more details.)
243 * Each subfacet tracks the datapath's idea of the flow equivalent to
244 * the facet. When the kernel module (or other dpif implementation) and
245 * Open vSwitch userspace agree on the definition of a flow key, there
246 * is exactly one subfacet per facet. If the dpif implementation
247 * supports more-specific flow matching than userspace, however, a facet
248 * can have more than one subfacet. Examples include the dpif
249 * implementation not supporting the same wildcards as userspace or some
250 * distinction in flow that userspace simply doesn't understand.
252 * Flow expiration works in terms of subfacets, so a facet must have at
253 * least one subfacet or it will never expire, leaking memory. */
256 struct ofproto_dpif *ofproto;
259 struct list subfacets;
260 long long int used; /* Time last used; time created if not used. */
263 struct flow flow; /* Flow of the creating subfacet. */
264 struct cls_rule cr; /* In 'ofproto_dpif's facets classifier. */
268 * - Do include packets and bytes sent "by hand", e.g. with
271 * - Do include packets and bytes that were obtained from the datapath
272 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
273 * DPIF_FP_ZERO_STATS).
275 * - Do not include packets or bytes that can be obtained from the
276 * datapath for any existing subfacet.
278 uint64_t packet_count; /* Number of packets received. */
279 uint64_t byte_count; /* Number of bytes received. */
281 /* Resubmit statistics. */
282 uint64_t prev_packet_count; /* Number of packets from last stats push. */
283 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
284 long long int prev_used; /* Used time from last stats push. */
287 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
288 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
289 uint16_t tcp_flags; /* TCP flags seen for this 'rule'. */
291 struct xlate_out xout;
293 /* Storage for a single subfacet, to reduce malloc() time and space
294 * overhead. (A facet always has at least one subfacet and in the common
295 * case has exactly one subfacet. However, 'one_subfacet' may not
296 * always be valid, since it could have been removed after newer
297 * subfacets were pushed onto the 'subfacets' list.) */
298 struct subfacet one_subfacet;
300 long long int learn_rl; /* Rate limiter for facet_learn(). */
303 static struct facet *facet_create(const struct flow_miss *);
304 static void facet_remove(struct facet *);
305 static void facet_free(struct facet *);
307 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
308 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
309 const struct flow *);
310 static bool facet_revalidate(struct facet *);
311 static bool facet_check_consistency(struct facet *);
313 static void facet_flush_stats(struct facet *);
315 static void facet_reset_counters(struct facet *);
316 static void flow_push_stats(struct ofproto_dpif *, struct flow *,
317 struct dpif_flow_stats *, bool may_learn);
318 static void facet_push_stats(struct facet *, bool may_learn);
319 static void facet_learn(struct facet *);
320 static void facet_account(struct facet *);
321 static void push_all_stats(void);
323 static bool facet_is_controller_flow(struct facet *);
326 struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
330 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
331 struct list bundle_node; /* In struct ofbundle's "ports" list. */
332 struct cfm *cfm; /* Connectivity Fault Management, if any. */
333 struct bfd *bfd; /* BFD, if any. */
334 bool may_enable; /* May be enabled in bonds. */
335 bool is_tunnel; /* This port is a tunnel. */
336 bool is_layer3; /* This is a layer 3 port. */
337 long long int carrier_seq; /* Carrier status changes. */
338 struct ofport_dpif *peer; /* Peer if patch port. */
341 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
342 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
343 long long int stp_state_entered;
345 /* Queue to DSCP mapping. */
346 struct ofproto_port_queue *qdscp;
349 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
351 * This is deprecated. It is only for compatibility with broken device
352 * drivers in old versions of Linux that do not properly support VLANs when
353 * VLAN devices are not used. When broken device drivers are no longer in
354 * widespread use, we will delete these interfaces. */
355 ofp_port_t realdev_ofp_port;
359 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
361 * This is deprecated. It is only for compatibility with broken device drivers
362 * in old versions of Linux that do not properly support VLANs when VLAN
363 * devices are not used. When broken device drivers are no longer in
364 * widespread use, we will delete these interfaces. */
365 struct vlan_splinter {
366 struct hmap_node realdev_vid_node;
367 struct hmap_node vlandev_node;
368 ofp_port_t realdev_ofp_port;
369 ofp_port_t vlandev_ofp_port;
373 static void vsp_remove(struct ofport_dpif *);
374 static void vsp_add(struct ofport_dpif *, ofp_port_t realdev_ofp_port, int vid);
376 static odp_port_t ofp_port_to_odp_port(const struct ofproto_dpif *,
379 static ofp_port_t odp_port_to_ofp_port(const struct ofproto_dpif *,
382 static struct ofport_dpif *
383 ofport_dpif_cast(const struct ofport *ofport)
385 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
388 static void port_run(struct ofport_dpif *);
389 static int set_bfd(struct ofport *, const struct smap *);
390 static int set_cfm(struct ofport *, const struct cfm_settings *);
391 static void ofport_update_peer(struct ofport_dpif *);
392 static void run_fast_rl(void);
393 static int run_fast(struct ofproto *);
395 struct dpif_completion {
396 struct list list_node;
397 struct ofoperation *op;
400 /* Reasons that we might need to revalidate every facet, and corresponding
403 * A value of 0 means that there is no need to revalidate.
405 * It would be nice to have some cleaner way to integrate with coverage
406 * counters, but with only a few reasons I guess this is good enough for
408 enum revalidate_reason {
409 REV_RECONFIGURE = 1, /* Switch configuration changed. */
410 REV_STP, /* Spanning tree protocol port status change. */
411 REV_BOND, /* Bonding changed. */
412 REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
413 REV_FLOW_TABLE, /* Flow table changed. */
414 REV_MAC_LEARNING, /* Mac learning changed. */
415 REV_INCONSISTENCY /* Facet self-check failed. */
417 COVERAGE_DEFINE(rev_reconfigure);
418 COVERAGE_DEFINE(rev_stp);
419 COVERAGE_DEFINE(rev_bond);
420 COVERAGE_DEFINE(rev_port_toggled);
421 COVERAGE_DEFINE(rev_flow_table);
422 COVERAGE_DEFINE(rev_mac_learning);
423 COVERAGE_DEFINE(rev_inconsistency);
425 struct avg_subfacet_rates {
426 double add_rate; /* Moving average of new flows created per minute. */
427 double del_rate; /* Moving average of flows deleted per minute. */
430 /* All datapaths of a given type share a single dpif backer instance. */
436 struct timer next_expiration;
438 struct ovs_rwlock odp_to_ofport_lock;
439 struct hmap odp_to_ofport_map OVS_GUARDED; /* Contains "struct ofport"s. */
441 struct simap tnl_backers; /* Set of dpif ports backing tunnels. */
443 /* Facet revalidation flags applying to facets which use this backer. */
444 enum revalidate_reason need_revalidate; /* Revalidate every facet. */
446 struct hmap drop_keys; /* Set of dropped odp keys. */
447 bool recv_set_enable; /* Enables or disables receiving packets. */
449 struct hmap subfacets;
450 struct governor *governor;
452 /* Subfacet statistics.
454 * These keep track of the total number of subfacets added and deleted and
455 * flow life span. They are useful for computing the flow rates stats
456 * exposed via "ovs-appctl dpif/show". The goal is to learn about
457 * traffic patterns in ways that we can use later to improve Open vSwitch
458 * performance in new situations. */
459 long long int created; /* Time when it is created. */
460 unsigned max_n_subfacet; /* Maximum number of flows */
461 unsigned avg_n_subfacet; /* Average number of flows. */
462 long long int avg_subfacet_life; /* Average life span of subfacets. */
464 /* Number of upcall handling threads. */
465 unsigned int n_handler_threads;
468 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
469 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
471 static void drop_key_clear(struct dpif_backer *);
473 struct ofproto_dpif {
474 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
476 struct dpif_backer *backer;
478 /* Special OpenFlow rules. */
479 struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
480 struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
481 struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
484 struct netflow *netflow;
485 struct dpif_sflow *sflow;
486 struct dpif_ipfix *ipfix;
487 struct hmap bundles; /* Contains "struct ofbundle"s. */
488 struct mac_learning *ml;
489 bool has_bonded_bundles;
490 struct mbridge *mbridge;
493 struct classifier facets; /* Contains 'struct facet's. */
494 long long int consistency_rl;
496 struct ovs_mutex stats_mutex;
497 struct netdev_stats stats OVS_GUARDED; /* To account packets generated and
498 * consumed in userspace. */
502 long long int stp_last_tick;
504 /* VLAN splinters. */
505 struct ovs_mutex vsp_mutex;
506 struct hmap realdev_vid_map OVS_GUARDED; /* (realdev,vid) -> vlandev. */
507 struct hmap vlandev_map OVS_GUARDED; /* vlandev -> (realdev,vid). */
510 struct sset ports; /* Set of standard port names. */
511 struct sset ghost_ports; /* Ports with no datapath port. */
512 struct sset port_poll_set; /* Queued names for port_poll() reply. */
513 int port_poll_errno; /* Last errno for port_poll() reply. */
515 /* Per ofproto's dpif stats. */
520 struct guarded_list pins; /* Contains "struct ofputil_packet_in"s. */
523 /* By default, flows in the datapath are wildcarded (megaflows). They
524 * may be disabled with the "ovs-appctl dpif/disable-megaflows" command. */
525 static bool enable_megaflows = true;
527 /* All existing ofproto_dpif instances, indexed by ->up.name. */
528 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
530 static void ofproto_dpif_unixctl_init(void);
532 static inline struct ofproto_dpif *
533 ofproto_dpif_cast(const struct ofproto *ofproto)
535 ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
536 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
539 static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *ofproto,
540 ofp_port_t ofp_port);
541 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
542 const struct ofpbuf *packet,
543 const struct ofpact[], size_t ofpacts_len,
547 static void handle_upcalls(struct dpif_backer *);
549 /* Flow expiration. */
550 static int expire(struct dpif_backer *);
553 static void send_netflow_active_timeouts(struct ofproto_dpif *);
555 /* Global variables. */
556 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
558 /* Initial mappings of port to bridge mappings. */
559 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
561 /* Executes 'fm'. The caller retains ownership of 'fm' and everything in
564 ofproto_dpif_flow_mod(struct ofproto_dpif *ofproto,
565 struct ofputil_flow_mod *fm)
567 ofproto_flow_mod(&ofproto->up, fm);
570 /* Appends 'pin' to the queue of "packet ins" to be sent to the controller.
571 * Takes ownership of 'pin' and pin->packet. */
573 ofproto_dpif_send_packet_in(struct ofproto_dpif *ofproto,
574 struct ofproto_packet_in *pin)
576 if (!guarded_list_push_back(&ofproto->pins, &pin->list_node, 1024)) {
577 COVERAGE_INC(packet_in_overflow);
578 free(CONST_CAST(void *, pin->up.packet));
583 /* Factory functions. */
586 init(const struct shash *iface_hints)
588 struct shash_node *node;
590 /* Make a local copy, since we don't own 'iface_hints' elements. */
591 SHASH_FOR_EACH(node, iface_hints) {
592 const struct iface_hint *orig_hint = node->data;
593 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
595 new_hint->br_name = xstrdup(orig_hint->br_name);
596 new_hint->br_type = xstrdup(orig_hint->br_type);
597 new_hint->ofp_port = orig_hint->ofp_port;
599 shash_add(&init_ofp_ports, node->name, new_hint);
604 enumerate_types(struct sset *types)
606 dp_enumerate_types(types);
610 enumerate_names(const char *type, struct sset *names)
612 struct ofproto_dpif *ofproto;
615 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
616 if (strcmp(type, ofproto->up.type)) {
619 sset_add(names, ofproto->up.name);
626 del(const char *type, const char *name)
631 error = dpif_open(name, type, &dpif);
633 error = dpif_delete(dpif);
640 port_open_type(const char *datapath_type, const char *port_type)
642 return dpif_port_open_type(datapath_type, port_type);
645 /* Type functions. */
647 static void process_dpif_port_changes(struct dpif_backer *);
648 static void process_dpif_all_ports_changed(struct dpif_backer *);
649 static void process_dpif_port_change(struct dpif_backer *,
650 const char *devname);
651 static void process_dpif_port_error(struct dpif_backer *, int error);
653 static struct ofproto_dpif *
654 lookup_ofproto_dpif_by_port_name(const char *name)
656 struct ofproto_dpif *ofproto;
658 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
659 if (sset_contains(&ofproto->ports, name)) {
668 type_run(const char *type)
670 static long long int push_timer = LLONG_MIN;
671 struct dpif_backer *backer;
673 backer = shash_find_data(&all_dpif_backers, type);
675 /* This is not necessarily a problem, since backers are only
676 * created on demand. */
680 dpif_run(backer->dpif);
682 /* The most natural place to push facet statistics is when they're pulled
683 * from the datapath. However, when there are many flows in the datapath,
684 * this expensive operation can occur so frequently, that it reduces our
685 * ability to quickly set up flows. To reduce the cost, we push statistics
687 if (time_msec() > push_timer) {
688 push_timer = time_msec() + 2000;
692 /* If vswitchd started with other_config:flow_restore_wait set as "true",
693 * and the configuration has now changed to "false", enable receiving
694 * packets from the datapath. */
695 if (!backer->recv_set_enable && !ofproto_get_flow_restore_wait()) {
698 backer->recv_set_enable = true;
700 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
702 udpif_recv_set(backer->udpif, 0, false);
703 VLOG_ERR("Failed to enable receiving packets in dpif.");
706 udpif_recv_set(backer->udpif, n_handler_threads,
707 backer->recv_set_enable);
708 dpif_flow_flush(backer->dpif);
709 backer->need_revalidate = REV_RECONFIGURE;
712 /* If the n_handler_threads is reconfigured, call udpif_recv_set()
713 * to reset the handler threads. */
714 if (backer->n_handler_threads != n_handler_threads) {
715 udpif_recv_set(backer->udpif, n_handler_threads,
716 backer->recv_set_enable);
717 backer->n_handler_threads = n_handler_threads;
720 if (backer->need_revalidate) {
721 struct ofproto_dpif *ofproto;
722 struct simap_node *node;
723 struct simap tmp_backers;
725 /* Handle tunnel garbage collection. */
726 simap_init(&tmp_backers);
727 simap_swap(&backer->tnl_backers, &tmp_backers);
729 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
730 struct ofport_dpif *iter;
732 if (backer != ofproto->backer) {
736 HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
737 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
740 if (!iter->is_tunnel) {
744 dp_port = netdev_vport_get_dpif_port(iter->up.netdev,
745 namebuf, sizeof namebuf);
746 node = simap_find(&tmp_backers, dp_port);
748 simap_put(&backer->tnl_backers, dp_port, node->data);
749 simap_delete(&tmp_backers, node);
750 node = simap_find(&backer->tnl_backers, dp_port);
752 node = simap_find(&backer->tnl_backers, dp_port);
754 odp_port_t odp_port = ODPP_NONE;
756 if (!dpif_port_add(backer->dpif, iter->up.netdev,
758 simap_put(&backer->tnl_backers, dp_port,
759 odp_to_u32(odp_port));
760 node = simap_find(&backer->tnl_backers, dp_port);
765 iter->odp_port = node ? u32_to_odp(node->data) : ODPP_NONE;
766 if (tnl_port_reconfigure(iter, iter->up.netdev,
768 backer->need_revalidate = REV_RECONFIGURE;
773 SIMAP_FOR_EACH (node, &tmp_backers) {
774 dpif_port_del(backer->dpif, u32_to_odp(node->data));
776 simap_destroy(&tmp_backers);
778 switch (backer->need_revalidate) {
779 case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
780 case REV_STP: COVERAGE_INC(rev_stp); break;
781 case REV_BOND: COVERAGE_INC(rev_bond); break;
782 case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
783 case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
784 case REV_MAC_LEARNING: COVERAGE_INC(rev_mac_learning); break;
785 case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
787 backer->need_revalidate = 0;
789 /* Clear the drop_keys in case we should now be accepting some
790 * formerly dropped flows. */
791 drop_key_clear(backer);
793 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
794 struct facet *facet, *next;
795 struct ofport_dpif *ofport;
796 struct cls_cursor cursor;
797 struct ofbundle *bundle;
799 if (ofproto->backer != backer) {
803 ovs_rwlock_wrlock(&xlate_rwlock);
804 xlate_ofproto_set(ofproto, ofproto->up.name,
805 ofproto->backer->dpif, ofproto->miss_rule,
806 ofproto->no_packet_in_rule, ofproto->ml,
807 ofproto->stp, ofproto->mbridge,
808 ofproto->sflow, ofproto->ipfix,
809 ofproto->up.frag_handling,
810 ofproto->up.forward_bpdu,
811 connmgr_has_in_band(ofproto->up.connmgr),
812 ofproto->netflow != NULL);
814 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
815 xlate_bundle_set(ofproto, bundle, bundle->name,
816 bundle->vlan_mode, bundle->vlan,
817 bundle->trunks, bundle->use_priority_tags,
818 bundle->bond, bundle->lacp,
822 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
823 int stp_port = ofport->stp_port
824 ? stp_port_no(ofport->stp_port)
826 xlate_ofport_set(ofproto, ofport->bundle, ofport,
827 ofport->up.ofp_port, ofport->odp_port,
828 ofport->up.netdev, ofport->cfm,
829 ofport->bfd, ofport->peer, stp_port,
830 ofport->qdscp, ofport->n_qdscp,
831 ofport->up.pp.config, ofport->up.pp.state,
832 ofport->is_tunnel, ofport->may_enable);
834 ovs_rwlock_unlock(&xlate_rwlock);
836 /* Only ofproto-dpif cares about the facet classifier so we just
837 * lock cls_cursor_init() to appease the thread safety analysis. */
838 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
839 cls_cursor_init(&cursor, &ofproto->facets, NULL);
840 ovs_rwlock_unlock(&ofproto->facets.rwlock);
841 CLS_CURSOR_FOR_EACH_SAFE (facet, next, cr, &cursor) {
842 facet_revalidate(facet);
847 udpif_revalidate(backer->udpif);
850 if (!backer->recv_set_enable) {
851 /* Wake up before a max of 1000ms. */
852 timer_set_duration(&backer->next_expiration, 1000);
853 } else if (timer_expired(&backer->next_expiration)) {
854 int delay = expire(backer);
855 timer_set_duration(&backer->next_expiration, delay);
858 process_dpif_port_changes(backer);
860 if (backer->governor) {
863 governor_run(backer->governor);
865 /* If the governor has shrunk to its minimum size and the number of
866 * subfacets has dwindled, then drop the governor entirely.
868 * For hysteresis, the number of subfacets to drop the governor is
869 * smaller than the number needed to trigger its creation. */
870 n_subfacets = hmap_count(&backer->subfacets);
871 if (n_subfacets * 4 < flow_eviction_threshold
872 && governor_is_idle(backer->governor)) {
873 governor_destroy(backer->governor);
874 backer->governor = NULL;
881 /* Check for and handle port changes in 'backer''s dpif. */
883 process_dpif_port_changes(struct dpif_backer *backer)
889 error = dpif_port_poll(backer->dpif, &devname);
895 process_dpif_all_ports_changed(backer);
899 process_dpif_port_change(backer, devname);
904 process_dpif_port_error(backer, error);
911 process_dpif_all_ports_changed(struct dpif_backer *backer)
913 struct ofproto_dpif *ofproto;
914 struct dpif_port dpif_port;
915 struct dpif_port_dump dump;
916 struct sset devnames;
919 sset_init(&devnames);
920 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
921 if (ofproto->backer == backer) {
922 struct ofport *ofport;
924 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
925 sset_add(&devnames, netdev_get_name(ofport->netdev));
929 DPIF_PORT_FOR_EACH (&dpif_port, &dump, backer->dpif) {
930 sset_add(&devnames, dpif_port.name);
933 SSET_FOR_EACH (devname, &devnames) {
934 process_dpif_port_change(backer, devname);
936 sset_destroy(&devnames);
940 process_dpif_port_change(struct dpif_backer *backer, const char *devname)
942 struct ofproto_dpif *ofproto;
943 struct dpif_port port;
945 /* Don't report on the datapath's device. */
946 if (!strcmp(devname, dpif_base_name(backer->dpif))) {
950 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
951 &all_ofproto_dpifs) {
952 if (simap_contains(&ofproto->backer->tnl_backers, devname)) {
957 ofproto = lookup_ofproto_dpif_by_port_name(devname);
958 if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
959 /* The port was removed. If we know the datapath,
960 * report it through poll_set(). If we don't, it may be
961 * notifying us of a removal we initiated, so ignore it.
962 * If there's a pending ENOBUFS, let it stand, since
963 * everything will be reevaluated. */
964 if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
965 sset_add(&ofproto->port_poll_set, devname);
966 ofproto->port_poll_errno = 0;
968 } else if (!ofproto) {
969 /* The port was added, but we don't know with which
970 * ofproto we should associate it. Delete it. */
971 dpif_port_del(backer->dpif, port.port_no);
973 struct ofport_dpif *ofport;
975 ofport = ofport_dpif_cast(shash_find_data(
976 &ofproto->up.port_by_name, devname));
978 && ofport->odp_port != port.port_no
979 && !odp_port_to_ofport(backer, port.port_no))
981 /* 'ofport''s datapath port number has changed from
982 * 'ofport->odp_port' to 'port.port_no'. Update our internal data
983 * structures to match. */
984 ovs_rwlock_wrlock(&backer->odp_to_ofport_lock);
985 hmap_remove(&backer->odp_to_ofport_map, &ofport->odp_port_node);
986 ofport->odp_port = port.port_no;
987 hmap_insert(&backer->odp_to_ofport_map, &ofport->odp_port_node,
988 hash_odp_port(port.port_no));
989 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
990 backer->need_revalidate = REV_RECONFIGURE;
993 dpif_port_destroy(&port);
996 /* Propagate 'error' to all ofprotos based on 'backer'. */
998 process_dpif_port_error(struct dpif_backer *backer, int error)
1000 struct ofproto_dpif *ofproto;
1002 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1003 if (ofproto->backer == backer) {
1004 sset_clear(&ofproto->port_poll_set);
1005 ofproto->port_poll_errno = error;
1011 dpif_backer_run_fast(struct dpif_backer *backer)
1013 handle_upcalls(backer);
1019 type_run_fast(const char *type)
1021 struct dpif_backer *backer;
1023 backer = shash_find_data(&all_dpif_backers, type);
1025 /* This is not necessarily a problem, since backers are only
1026 * created on demand. */
1030 return dpif_backer_run_fast(backer);
1036 static long long int port_rl = LLONG_MIN;
1038 if (time_msec() >= port_rl) {
1039 struct ofproto_dpif *ofproto;
1041 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1042 run_fast(&ofproto->up);
1044 port_rl = time_msec() + 200;
1049 type_wait(const char *type)
1051 struct dpif_backer *backer;
1053 backer = shash_find_data(&all_dpif_backers, type);
1055 /* This is not necessarily a problem, since backers are only
1056 * created on demand. */
1060 if (backer->governor) {
1061 governor_wait(backer->governor);
1064 timer_wait(&backer->next_expiration);
1065 dpif_wait(backer->dpif);
1066 udpif_wait(backer->udpif);
1069 /* Basic life-cycle. */
1071 static int add_internal_flows(struct ofproto_dpif *);
1073 static struct ofproto *
1076 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
1077 return &ofproto->up;
1081 dealloc(struct ofproto *ofproto_)
1083 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1088 close_dpif_backer(struct dpif_backer *backer)
1090 ovs_assert(backer->refcount > 0);
1092 if (--backer->refcount) {
1096 drop_key_clear(backer);
1097 hmap_destroy(&backer->drop_keys);
1099 udpif_destroy(backer->udpif);
1101 simap_destroy(&backer->tnl_backers);
1102 ovs_rwlock_destroy(&backer->odp_to_ofport_lock);
1103 hmap_destroy(&backer->odp_to_ofport_map);
1104 shash_find_and_delete(&all_dpif_backers, backer->type);
1106 dpif_close(backer->dpif);
1108 ovs_assert(hmap_is_empty(&backer->subfacets));
1109 hmap_destroy(&backer->subfacets);
1110 governor_destroy(backer->governor);
1115 /* Datapath port slated for removal from datapath. */
1116 struct odp_garbage {
1117 struct list list_node;
1118 odp_port_t odp_port;
1122 open_dpif_backer(const char *type, struct dpif_backer **backerp)
1124 struct dpif_backer *backer;
1125 struct dpif_port_dump port_dump;
1126 struct dpif_port port;
1127 struct shash_node *node;
1128 struct list garbage_list;
1129 struct odp_garbage *garbage, *next;
1135 backer = shash_find_data(&all_dpif_backers, type);
1142 backer_name = xasprintf("ovs-%s", type);
1144 /* Remove any existing datapaths, since we assume we're the only
1145 * userspace controlling the datapath. */
1147 dp_enumerate_names(type, &names);
1148 SSET_FOR_EACH(name, &names) {
1149 struct dpif *old_dpif;
1151 /* Don't remove our backer if it exists. */
1152 if (!strcmp(name, backer_name)) {
1156 if (dpif_open(name, type, &old_dpif)) {
1157 VLOG_WARN("couldn't open old datapath %s to remove it", name);
1159 dpif_delete(old_dpif);
1160 dpif_close(old_dpif);
1163 sset_destroy(&names);
1165 backer = xmalloc(sizeof *backer);
1167 error = dpif_create_and_open(backer_name, type, &backer->dpif);
1170 VLOG_ERR("failed to open datapath of type %s: %s", type,
1171 ovs_strerror(error));
1175 backer->udpif = udpif_create(backer, backer->dpif);
1177 backer->type = xstrdup(type);
1178 backer->governor = NULL;
1179 backer->refcount = 1;
1180 hmap_init(&backer->odp_to_ofport_map);
1181 ovs_rwlock_init(&backer->odp_to_ofport_lock);
1182 hmap_init(&backer->drop_keys);
1183 hmap_init(&backer->subfacets);
1184 timer_set_duration(&backer->next_expiration, 1000);
1185 backer->need_revalidate = 0;
1186 simap_init(&backer->tnl_backers);
1187 backer->recv_set_enable = !ofproto_get_flow_restore_wait();
1190 if (backer->recv_set_enable) {
1191 dpif_flow_flush(backer->dpif);
1194 /* Loop through the ports already on the datapath and remove any
1195 * that we don't need anymore. */
1196 list_init(&garbage_list);
1197 dpif_port_dump_start(&port_dump, backer->dpif);
1198 while (dpif_port_dump_next(&port_dump, &port)) {
1199 node = shash_find(&init_ofp_ports, port.name);
1200 if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
1201 garbage = xmalloc(sizeof *garbage);
1202 garbage->odp_port = port.port_no;
1203 list_push_front(&garbage_list, &garbage->list_node);
1206 dpif_port_dump_done(&port_dump);
1208 LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
1209 dpif_port_del(backer->dpif, garbage->odp_port);
1210 list_remove(&garbage->list_node);
1214 shash_add(&all_dpif_backers, type, backer);
1216 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
1218 VLOG_ERR("failed to listen on datapath of type %s: %s",
1219 type, ovs_strerror(error));
1220 close_dpif_backer(backer);
1223 udpif_recv_set(backer->udpif, n_handler_threads,
1224 backer->recv_set_enable);
1225 backer->n_handler_threads = n_handler_threads;
1227 backer->max_n_subfacet = 0;
1228 backer->created = time_msec();
1229 backer->avg_n_subfacet = 0;
1230 backer->avg_subfacet_life = 0;
1236 construct(struct ofproto *ofproto_)
1238 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1239 struct shash_node *node, *next;
1242 error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
1247 ofproto->netflow = NULL;
1248 ofproto->sflow = NULL;
1249 ofproto->ipfix = NULL;
1250 ofproto->stp = NULL;
1251 hmap_init(&ofproto->bundles);
1252 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
1253 ofproto->mbridge = mbridge_create();
1254 ofproto->has_bonded_bundles = false;
1255 ovs_mutex_init(&ofproto->stats_mutex);
1256 ovs_mutex_init(&ofproto->vsp_mutex);
1258 classifier_init(&ofproto->facets, NULL);
1259 ofproto->consistency_rl = LLONG_MIN;
1261 guarded_list_init(&ofproto->pins);
1263 ofproto_dpif_unixctl_init();
1265 hmap_init(&ofproto->vlandev_map);
1266 hmap_init(&ofproto->realdev_vid_map);
1268 sset_init(&ofproto->ports);
1269 sset_init(&ofproto->ghost_ports);
1270 sset_init(&ofproto->port_poll_set);
1271 ofproto->port_poll_errno = 0;
1273 SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
1274 struct iface_hint *iface_hint = node->data;
1276 if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
1277 /* Check if the datapath already has this port. */
1278 if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
1279 sset_add(&ofproto->ports, node->name);
1282 free(iface_hint->br_name);
1283 free(iface_hint->br_type);
1285 shash_delete(&init_ofp_ports, node);
1289 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
1290 hash_string(ofproto->up.name, 0));
1291 memset(&ofproto->stats, 0, sizeof ofproto->stats);
1293 ofproto_init_tables(ofproto_, N_TABLES);
1294 error = add_internal_flows(ofproto);
1295 ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
1298 ofproto->n_missed = 0;
1304 add_internal_flow(struct ofproto_dpif *ofproto, int id,
1305 const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
1307 struct ofputil_flow_mod fm;
1310 match_init_catchall(&fm.match);
1312 match_set_reg(&fm.match, 0, id);
1313 fm.new_cookie = htonll(0);
1314 fm.cookie = htonll(0);
1315 fm.cookie_mask = htonll(0);
1316 fm.modify_cookie = false;
1317 fm.table_id = TBL_INTERNAL;
1318 fm.command = OFPFC_ADD;
1319 fm.idle_timeout = 0;
1320 fm.hard_timeout = 0;
1324 fm.ofpacts = ofpacts->data;
1325 fm.ofpacts_len = ofpacts->size;
1327 error = ofproto_flow_mod(&ofproto->up, &fm);
1329 VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
1330 id, ofperr_to_string(error));
1334 if (rule_dpif_lookup_in_table(ofproto, &fm.match.flow, NULL, TBL_INTERNAL,
1336 rule_dpif_unref(*rulep);
1345 add_internal_flows(struct ofproto_dpif *ofproto)
1347 struct ofpact_controller *controller;
1348 uint64_t ofpacts_stub[128 / 8];
1349 struct ofpbuf ofpacts;
1353 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
1356 controller = ofpact_put_CONTROLLER(&ofpacts);
1357 controller->max_len = UINT16_MAX;
1358 controller->controller_id = 0;
1359 controller->reason = OFPR_NO_MATCH;
1360 ofpact_pad(&ofpacts);
1362 error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
1367 ofpbuf_clear(&ofpacts);
1368 error = add_internal_flow(ofproto, id++, &ofpacts,
1369 &ofproto->no_packet_in_rule);
1374 error = add_internal_flow(ofproto, id++, &ofpacts,
1375 &ofproto->drop_frags_rule);
1380 destruct(struct ofproto *ofproto_)
1382 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1383 struct rule_dpif *rule, *next_rule;
1384 struct ofproto_packet_in *pin, *next_pin;
1385 struct facet *facet, *next_facet;
1386 struct cls_cursor cursor;
1387 struct oftable *table;
1390 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1391 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1392 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1393 CLS_CURSOR_FOR_EACH_SAFE (facet, next_facet, cr, &cursor) {
1394 facet_remove(facet);
1397 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1398 ovs_rwlock_wrlock(&xlate_rwlock);
1399 xlate_remove_ofproto(ofproto);
1400 ovs_rwlock_unlock(&xlate_rwlock);
1402 /* Discard any flow_miss_batches queued up for 'ofproto', avoiding a
1403 * use-after-free error. */
1404 udpif_revalidate(ofproto->backer->udpif);
1406 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
1408 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1409 struct cls_cursor cursor;
1411 ovs_rwlock_rdlock(&table->cls.rwlock);
1412 cls_cursor_init(&cursor, &table->cls, NULL);
1413 ovs_rwlock_unlock(&table->cls.rwlock);
1414 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1415 ofproto_rule_delete(&ofproto->up, &rule->up);
1419 guarded_list_pop_all(&ofproto->pins, &pins);
1420 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
1421 list_remove(&pin->list_node);
1422 free(CONST_CAST(void *, pin->up.packet));
1425 guarded_list_destroy(&ofproto->pins);
1427 mbridge_unref(ofproto->mbridge);
1429 netflow_destroy(ofproto->netflow);
1430 dpif_sflow_unref(ofproto->sflow);
1431 hmap_destroy(&ofproto->bundles);
1432 mac_learning_unref(ofproto->ml);
1434 classifier_destroy(&ofproto->facets);
1436 hmap_destroy(&ofproto->vlandev_map);
1437 hmap_destroy(&ofproto->realdev_vid_map);
1439 sset_destroy(&ofproto->ports);
1440 sset_destroy(&ofproto->ghost_ports);
1441 sset_destroy(&ofproto->port_poll_set);
1443 ovs_mutex_destroy(&ofproto->stats_mutex);
1444 ovs_mutex_destroy(&ofproto->vsp_mutex);
1446 close_dpif_backer(ofproto->backer);
1450 run_fast(struct ofproto *ofproto_)
1452 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1453 struct ofproto_packet_in *pin, *next_pin;
1456 /* Do not perform any periodic activity required by 'ofproto' while
1457 * waiting for flow restore to complete. */
1458 if (ofproto_get_flow_restore_wait()) {
1462 guarded_list_pop_all(&ofproto->pins, &pins);
1463 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
1464 connmgr_send_packet_in(ofproto->up.connmgr, pin);
1465 list_remove(&pin->list_node);
1466 free(CONST_CAST(void *, pin->up.packet));
1474 run(struct ofproto *ofproto_)
1476 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1477 struct ofport_dpif *ofport;
1478 struct ofbundle *bundle;
1481 if (mbridge_need_revalidate(ofproto->mbridge)) {
1482 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1483 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1484 mac_learning_flush(ofproto->ml);
1485 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1488 /* Do not perform any periodic activity below required by 'ofproto' while
1489 * waiting for flow restore to complete. */
1490 if (ofproto_get_flow_restore_wait()) {
1494 error = run_fast(ofproto_);
1499 if (ofproto->netflow) {
1500 if (netflow_run(ofproto->netflow)) {
1501 send_netflow_active_timeouts(ofproto);
1504 if (ofproto->sflow) {
1505 dpif_sflow_run(ofproto->sflow);
1507 if (ofproto->ipfix) {
1508 dpif_ipfix_run(ofproto->ipfix);
1511 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1514 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1519 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1520 if (mac_learning_run(ofproto->ml)) {
1521 ofproto->backer->need_revalidate = REV_MAC_LEARNING;
1523 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1525 /* Check the consistency of a random facet, to aid debugging. */
1526 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1527 if (time_msec() >= ofproto->consistency_rl
1528 && !classifier_is_empty(&ofproto->facets)
1529 && !ofproto->backer->need_revalidate) {
1530 struct cls_subtable *table;
1531 struct cls_rule *cr;
1532 struct facet *facet;
1534 ofproto->consistency_rl = time_msec() + 250;
1536 table = CONTAINER_OF(hmap_random_node(&ofproto->facets.subtables),
1537 struct cls_subtable, hmap_node);
1538 cr = CONTAINER_OF(hmap_random_node(&table->rules), struct cls_rule,
1540 facet = CONTAINER_OF(cr, struct facet, cr);
1542 if (!facet_check_consistency(facet)) {
1543 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
1546 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1552 wait(struct ofproto *ofproto_)
1554 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1555 struct ofbundle *bundle;
1557 if (ofproto_get_flow_restore_wait()) {
1561 if (ofproto->sflow) {
1562 dpif_sflow_wait(ofproto->sflow);
1564 if (ofproto->ipfix) {
1565 dpif_ipfix_wait(ofproto->ipfix);
1567 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1568 bundle_wait(bundle);
1570 if (ofproto->netflow) {
1571 netflow_wait(ofproto->netflow);
1573 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
1574 mac_learning_wait(ofproto->ml);
1575 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1577 if (ofproto->backer->need_revalidate) {
1578 /* Shouldn't happen, but if it does just go around again. */
1579 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
1580 poll_immediate_wake();
1585 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
1587 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1588 struct cls_cursor cursor;
1589 size_t n_subfacets = 0;
1590 struct facet *facet;
1592 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1593 simap_increase(usage, "facets", classifier_count(&ofproto->facets));
1594 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1596 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1597 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1598 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
1599 n_subfacets += list_size(&facet->subfacets);
1601 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1602 simap_increase(usage, "subfacets", n_subfacets);
1606 flush(struct ofproto *ofproto_)
1608 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1609 struct subfacet *subfacet, *next_subfacet;
1610 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
1614 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
1615 &ofproto->backer->subfacets) {
1616 if (subfacet->facet->ofproto != ofproto) {
1620 if (subfacet->path != SF_NOT_INSTALLED) {
1621 batch[n_batch++] = subfacet;
1622 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
1623 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1627 subfacet_destroy(subfacet);
1632 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1637 get_features(struct ofproto *ofproto_ OVS_UNUSED,
1638 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
1640 *arp_match_ip = true;
1641 *actions = (OFPUTIL_A_OUTPUT |
1642 OFPUTIL_A_SET_VLAN_VID |
1643 OFPUTIL_A_SET_VLAN_PCP |
1644 OFPUTIL_A_STRIP_VLAN |
1645 OFPUTIL_A_SET_DL_SRC |
1646 OFPUTIL_A_SET_DL_DST |
1647 OFPUTIL_A_SET_NW_SRC |
1648 OFPUTIL_A_SET_NW_DST |
1649 OFPUTIL_A_SET_NW_TOS |
1650 OFPUTIL_A_SET_TP_SRC |
1651 OFPUTIL_A_SET_TP_DST |
1656 get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
1658 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1659 struct dpif_dp_stats s;
1660 uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
1663 strcpy(ots->name, "classifier");
1665 dpif_get_dp_stats(ofproto->backer->dpif, &s);
1666 rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes);
1667 rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in, &n_bytes);
1668 rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags, &n_bytes);
1670 n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
1671 ots->lookup_count = htonll(n_lookup);
1672 ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
1675 static struct ofport *
1678 struct ofport_dpif *port = xmalloc(sizeof *port);
1683 port_dealloc(struct ofport *port_)
1685 struct ofport_dpif *port = ofport_dpif_cast(port_);
1690 port_construct(struct ofport *port_)
1692 struct ofport_dpif *port = ofport_dpif_cast(port_);
1693 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1694 const struct netdev *netdev = port->up.netdev;
1695 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1696 struct dpif_port dpif_port;
1699 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1700 port->bundle = NULL;
1703 port->may_enable = true;
1704 port->stp_port = NULL;
1705 port->stp_state = STP_DISABLED;
1706 port->is_tunnel = false;
1710 port->realdev_ofp_port = 0;
1711 port->vlandev_vid = 0;
1712 port->carrier_seq = netdev_get_carrier_resets(netdev);
1713 port->is_layer3 = netdev_vport_is_layer3(netdev);
1715 if (netdev_vport_is_patch(netdev)) {
1716 /* By bailing out here, we don't submit the port to the sFlow module
1717 * to be considered for counter polling export. This is correct
1718 * because the patch port represents an interface that sFlow considers
1719 * to be "internal" to the switch as a whole, and therefore not an
1720 * candidate for counter polling. */
1721 port->odp_port = ODPP_NONE;
1722 ofport_update_peer(port);
1726 error = dpif_port_query_by_name(ofproto->backer->dpif,
1727 netdev_vport_get_dpif_port(netdev, namebuf,
1734 port->odp_port = dpif_port.port_no;
1736 if (netdev_get_tunnel_config(netdev)) {
1737 tnl_port_add(port, port->up.netdev, port->odp_port);
1738 port->is_tunnel = true;
1740 /* Sanity-check that a mapping doesn't already exist. This
1741 * shouldn't happen for non-tunnel ports. */
1742 if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
1743 VLOG_ERR("port %s already has an OpenFlow port number",
1745 dpif_port_destroy(&dpif_port);
1749 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1750 hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
1751 hash_odp_port(port->odp_port));
1752 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1754 dpif_port_destroy(&dpif_port);
1756 if (ofproto->sflow) {
1757 dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
1764 port_destruct(struct ofport *port_)
1766 struct ofport_dpif *port = ofport_dpif_cast(port_);
1767 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1768 const char *devname = netdev_get_name(port->up.netdev);
1769 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1770 const char *dp_port_name;
1772 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1773 ovs_rwlock_wrlock(&xlate_rwlock);
1774 xlate_ofport_remove(port);
1775 ovs_rwlock_unlock(&xlate_rwlock);
1777 dp_port_name = netdev_vport_get_dpif_port(port->up.netdev, namebuf,
1779 if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
1780 /* The underlying device is still there, so delete it. This
1781 * happens when the ofproto is being destroyed, since the caller
1782 * assumes that removal of attached ports will happen as part of
1784 if (!port->is_tunnel) {
1785 dpif_port_del(ofproto->backer->dpif, port->odp_port);
1790 port->peer->peer = NULL;
1794 if (port->odp_port != ODPP_NONE && !port->is_tunnel) {
1795 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1796 hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
1797 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1801 sset_find_and_delete(&ofproto->ports, devname);
1802 sset_find_and_delete(&ofproto->ghost_ports, devname);
1803 bundle_remove(port_);
1804 set_cfm(port_, NULL);
1805 set_bfd(port_, NULL);
1806 if (ofproto->sflow) {
1807 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1814 port_modified(struct ofport *port_)
1816 struct ofport_dpif *port = ofport_dpif_cast(port_);
1818 if (port->bundle && port->bundle->bond) {
1819 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1823 cfm_set_netdev(port->cfm, port->up.netdev);
1827 bfd_set_netdev(port->bfd, port->up.netdev);
1830 ofproto_dpif_monitor_port_update(port, port->bfd, port->cfm,
1831 port->up.pp.hw_addr);
1833 if (port->is_tunnel && tnl_port_reconfigure(port, port->up.netdev,
1835 ofproto_dpif_cast(port->up.ofproto)->backer->need_revalidate =
1839 ofport_update_peer(port);
1843 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1845 struct ofport_dpif *port = ofport_dpif_cast(port_);
1846 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1847 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1849 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1850 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
1851 OFPUTIL_PC_NO_PACKET_IN)) {
1852 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1854 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1855 bundle_update(port->bundle);
1861 set_sflow(struct ofproto *ofproto_,
1862 const struct ofproto_sflow_options *sflow_options)
1864 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1865 struct dpif_sflow *ds = ofproto->sflow;
1867 if (sflow_options) {
1869 struct ofport_dpif *ofport;
1871 ds = ofproto->sflow = dpif_sflow_create();
1872 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1873 dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
1875 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1877 dpif_sflow_set_options(ds, sflow_options);
1880 dpif_sflow_unref(ds);
1881 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1882 ofproto->sflow = NULL;
1890 struct ofproto *ofproto_,
1891 const struct ofproto_ipfix_bridge_exporter_options *bridge_exporter_options,
1892 const struct ofproto_ipfix_flow_exporter_options *flow_exporters_options,
1893 size_t n_flow_exporters_options)
1895 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1896 struct dpif_ipfix *di = ofproto->ipfix;
1897 bool has_options = bridge_exporter_options || flow_exporters_options;
1899 if (has_options && !di) {
1900 di = ofproto->ipfix = dpif_ipfix_create();
1904 /* Call set_options in any case to cleanly flush the flow
1905 * caches in the last exporters that are to be destroyed. */
1906 dpif_ipfix_set_options(
1907 di, bridge_exporter_options, flow_exporters_options,
1908 n_flow_exporters_options);
1911 dpif_ipfix_unref(di);
1912 ofproto->ipfix = NULL;
1920 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1922 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1927 struct ofproto_dpif *ofproto;
1929 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1930 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1931 ofport->cfm = cfm_create(ofport->up.netdev);
1934 if (cfm_configure(ofport->cfm, s)) {
1941 cfm_unref(ofport->cfm);
1944 ofproto_dpif_monitor_port_update(ofport, ofport->bfd, ofport->cfm,
1945 ofport->up.pp.hw_addr);
1950 get_cfm_status(const struct ofport *ofport_,
1951 struct ofproto_cfm_status *status)
1953 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1956 status->faults = cfm_get_fault(ofport->cfm);
1957 status->flap_count = cfm_get_flap_count(ofport->cfm);
1958 status->remote_opstate = cfm_get_opup(ofport->cfm);
1959 status->health = cfm_get_health(ofport->cfm);
1960 cfm_get_remote_mpids(ofport->cfm, &status->rmps, &status->n_rmps);
1968 set_bfd(struct ofport *ofport_, const struct smap *cfg)
1970 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
1971 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1975 ofport->bfd = bfd_configure(old, netdev_get_name(ofport->up.netdev),
1976 cfg, ofport->up.netdev);
1977 if (ofport->bfd != old) {
1978 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1980 ofproto_dpif_monitor_port_update(ofport, ofport->bfd, ofport->cfm,
1981 ofport->up.pp.hw_addr);
1986 get_bfd_status(struct ofport *ofport_, struct smap *smap)
1988 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1991 bfd_get_status(ofport->bfd, smap);
1998 /* Spanning Tree. */
2001 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
2003 struct ofproto_dpif *ofproto = ofproto_;
2004 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
2005 struct ofport_dpif *ofport;
2007 ofport = stp_port_get_aux(sp);
2009 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
2010 ofproto->up.name, port_num);
2012 struct eth_header *eth = pkt->l2;
2014 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
2015 if (eth_addr_is_zero(eth->eth_src)) {
2016 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
2017 "with unknown MAC", ofproto->up.name, port_num);
2019 ofproto_dpif_send_packet(ofport, pkt);
2025 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
2027 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
2029 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2031 /* Only revalidate flows if the configuration changed. */
2032 if (!s != !ofproto->stp) {
2033 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2037 if (!ofproto->stp) {
2038 ofproto->stp = stp_create(ofproto_->name, s->system_id,
2039 send_bpdu_cb, ofproto);
2040 ofproto->stp_last_tick = time_msec();
2043 stp_set_bridge_id(ofproto->stp, s->system_id);
2044 stp_set_bridge_priority(ofproto->stp, s->priority);
2045 stp_set_hello_time(ofproto->stp, s->hello_time);
2046 stp_set_max_age(ofproto->stp, s->max_age);
2047 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
2049 struct ofport *ofport;
2051 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
2052 set_stp_port(ofport, NULL);
2055 stp_unref(ofproto->stp);
2056 ofproto->stp = NULL;
2063 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
2065 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2069 s->bridge_id = stp_get_bridge_id(ofproto->stp);
2070 s->designated_root = stp_get_designated_root(ofproto->stp);
2071 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
2080 update_stp_port_state(struct ofport_dpif *ofport)
2082 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2083 enum stp_state state;
2085 /* Figure out new state. */
2086 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
2090 if (ofport->stp_state != state) {
2091 enum ofputil_port_state of_state;
2094 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
2095 netdev_get_name(ofport->up.netdev),
2096 stp_state_name(ofport->stp_state),
2097 stp_state_name(state));
2098 if (stp_learn_in_state(ofport->stp_state)
2099 != stp_learn_in_state(state)) {
2100 /* xxx Learning action flows should also be flushed. */
2101 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2102 mac_learning_flush(ofproto->ml);
2103 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2105 fwd_change = stp_forward_in_state(ofport->stp_state)
2106 != stp_forward_in_state(state);
2108 ofproto->backer->need_revalidate = REV_STP;
2109 ofport->stp_state = state;
2110 ofport->stp_state_entered = time_msec();
2112 if (fwd_change && ofport->bundle) {
2113 bundle_update(ofport->bundle);
2116 /* Update the STP state bits in the OpenFlow port description. */
2117 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
2118 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
2119 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
2120 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
2121 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
2123 ofproto_port_set_state(&ofport->up, of_state);
2127 /* Configures STP on 'ofport_' using the settings defined in 's'. The
2128 * caller is responsible for assigning STP port numbers and ensuring
2129 * there are no duplicates. */
2131 set_stp_port(struct ofport *ofport_,
2132 const struct ofproto_port_stp_settings *s)
2134 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2135 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2136 struct stp_port *sp = ofport->stp_port;
2138 if (!s || !s->enable) {
2140 ofport->stp_port = NULL;
2141 stp_port_disable(sp);
2142 update_stp_port_state(ofport);
2145 } else if (sp && stp_port_no(sp) != s->port_num
2146 && ofport == stp_port_get_aux(sp)) {
2147 /* The port-id changed, so disable the old one if it's not
2148 * already in use by another port. */
2149 stp_port_disable(sp);
2152 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
2153 stp_port_enable(sp);
2155 stp_port_set_aux(sp, ofport);
2156 stp_port_set_priority(sp, s->priority);
2157 stp_port_set_path_cost(sp, s->path_cost);
2159 update_stp_port_state(ofport);
2165 get_stp_port_status(struct ofport *ofport_,
2166 struct ofproto_port_stp_status *s)
2168 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2169 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2170 struct stp_port *sp = ofport->stp_port;
2172 if (!ofproto->stp || !sp) {
2178 s->port_id = stp_port_get_id(sp);
2179 s->state = stp_port_get_state(sp);
2180 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
2181 s->role = stp_port_get_role(sp);
2187 get_stp_port_stats(struct ofport *ofport_,
2188 struct ofproto_port_stp_stats *s)
2190 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2191 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2192 struct stp_port *sp = ofport->stp_port;
2194 if (!ofproto->stp || !sp) {
2200 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
2206 stp_run(struct ofproto_dpif *ofproto)
2209 long long int now = time_msec();
2210 long long int elapsed = now - ofproto->stp_last_tick;
2211 struct stp_port *sp;
2214 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
2215 ofproto->stp_last_tick = now;
2217 while (stp_get_changed_port(ofproto->stp, &sp)) {
2218 struct ofport_dpif *ofport = stp_port_get_aux(sp);
2221 update_stp_port_state(ofport);
2225 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
2226 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2227 mac_learning_flush(ofproto->ml);
2228 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2234 stp_wait(struct ofproto_dpif *ofproto)
2237 poll_timer_wait(1000);
2242 set_queues(struct ofport *ofport_, const struct ofproto_port_queue *qdscp,
2245 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2246 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2248 if (ofport->n_qdscp != n_qdscp
2249 || (n_qdscp && memcmp(ofport->qdscp, qdscp,
2250 n_qdscp * sizeof *qdscp))) {
2251 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2252 free(ofport->qdscp);
2253 ofport->qdscp = n_qdscp
2254 ? xmemdup(qdscp, n_qdscp * sizeof *qdscp)
2256 ofport->n_qdscp = n_qdscp;
2264 /* Expires all MAC learning entries associated with 'bundle' and forces its
2265 * ofproto to revalidate every flow.
2267 * Normally MAC learning entries are removed only from the ofproto associated
2268 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2269 * are removed from every ofproto. When patch ports and SLB bonds are in use
2270 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2271 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2272 * with the host from which it migrated. */
2274 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
2276 struct ofproto_dpif *ofproto = bundle->ofproto;
2277 struct mac_learning *ml = ofproto->ml;
2278 struct mac_entry *mac, *next_mac;
2280 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2281 ovs_rwlock_wrlock(&ml->rwlock);
2282 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
2283 if (mac->port.p == bundle) {
2285 struct ofproto_dpif *o;
2287 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2289 struct mac_entry *e;
2291 ovs_rwlock_wrlock(&o->ml->rwlock);
2292 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan);
2294 mac_learning_expire(o->ml, e);
2296 ovs_rwlock_unlock(&o->ml->rwlock);
2301 mac_learning_expire(ml, mac);
2304 ovs_rwlock_unlock(&ml->rwlock);
2307 static struct ofbundle *
2308 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
2310 struct ofbundle *bundle;
2312 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
2313 &ofproto->bundles) {
2314 if (bundle->aux == aux) {
2322 bundle_update(struct ofbundle *bundle)
2324 struct ofport_dpif *port;
2326 bundle->floodable = true;
2327 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2328 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2330 || !stp_forward_in_state(port->stp_state)) {
2331 bundle->floodable = false;
2338 bundle_del_port(struct ofport_dpif *port)
2340 struct ofbundle *bundle = port->bundle;
2342 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2344 list_remove(&port->bundle_node);
2345 port->bundle = NULL;
2348 lacp_slave_unregister(bundle->lacp, port);
2351 bond_slave_unregister(bundle->bond, port);
2354 bundle_update(bundle);
2358 bundle_add_port(struct ofbundle *bundle, ofp_port_t ofp_port,
2359 struct lacp_slave_settings *lacp)
2361 struct ofport_dpif *port;
2363 port = get_ofp_port(bundle->ofproto, ofp_port);
2368 if (port->bundle != bundle) {
2369 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2371 bundle_remove(&port->up);
2374 port->bundle = bundle;
2375 list_push_back(&bundle->ports, &port->bundle_node);
2376 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2378 || !stp_forward_in_state(port->stp_state)) {
2379 bundle->floodable = false;
2383 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2384 lacp_slave_register(bundle->lacp, port, lacp);
2391 bundle_destroy(struct ofbundle *bundle)
2393 struct ofproto_dpif *ofproto;
2394 struct ofport_dpif *port, *next_port;
2400 ofproto = bundle->ofproto;
2401 mbridge_unregister_bundle(ofproto->mbridge, bundle->aux);
2403 ovs_rwlock_wrlock(&xlate_rwlock);
2404 xlate_bundle_remove(bundle);
2405 ovs_rwlock_unlock(&xlate_rwlock);
2407 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2408 bundle_del_port(port);
2411 bundle_flush_macs(bundle, true);
2412 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
2414 free(bundle->trunks);
2415 lacp_unref(bundle->lacp);
2416 bond_unref(bundle->bond);
2421 bundle_set(struct ofproto *ofproto_, void *aux,
2422 const struct ofproto_bundle_settings *s)
2424 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2425 bool need_flush = false;
2426 struct ofport_dpif *port;
2427 struct ofbundle *bundle;
2428 unsigned long *trunks;
2434 bundle_destroy(bundle_lookup(ofproto, aux));
2438 ovs_assert(s->n_slaves == 1 || s->bond != NULL);
2439 ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
2441 bundle = bundle_lookup(ofproto, aux);
2443 bundle = xmalloc(sizeof *bundle);
2445 bundle->ofproto = ofproto;
2446 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
2447 hash_pointer(aux, 0));
2449 bundle->name = NULL;
2451 list_init(&bundle->ports);
2452 bundle->vlan_mode = PORT_VLAN_TRUNK;
2454 bundle->trunks = NULL;
2455 bundle->use_priority_tags = s->use_priority_tags;
2456 bundle->lacp = NULL;
2457 bundle->bond = NULL;
2459 bundle->floodable = true;
2460 mbridge_register_bundle(ofproto->mbridge, bundle);
2463 if (!bundle->name || strcmp(s->name, bundle->name)) {
2465 bundle->name = xstrdup(s->name);
2470 if (!bundle->lacp) {
2471 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2472 bundle->lacp = lacp_create();
2474 lacp_configure(bundle->lacp, s->lacp);
2476 lacp_unref(bundle->lacp);
2477 bundle->lacp = NULL;
2480 /* Update set of ports. */
2482 for (i = 0; i < s->n_slaves; i++) {
2483 if (!bundle_add_port(bundle, s->slaves[i],
2484 s->lacp ? &s->lacp_slaves[i] : NULL)) {
2488 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
2489 struct ofport_dpif *next_port;
2491 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2492 for (i = 0; i < s->n_slaves; i++) {
2493 if (s->slaves[i] == port->up.ofp_port) {
2498 bundle_del_port(port);
2502 ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
2504 if (list_is_empty(&bundle->ports)) {
2505 bundle_destroy(bundle);
2509 /* Set VLAN tagging mode */
2510 if (s->vlan_mode != bundle->vlan_mode
2511 || s->use_priority_tags != bundle->use_priority_tags) {
2512 bundle->vlan_mode = s->vlan_mode;
2513 bundle->use_priority_tags = s->use_priority_tags;
2518 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
2519 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
2521 if (vlan != bundle->vlan) {
2522 bundle->vlan = vlan;
2526 /* Get trunked VLANs. */
2527 switch (s->vlan_mode) {
2528 case PORT_VLAN_ACCESS:
2532 case PORT_VLAN_TRUNK:
2533 trunks = CONST_CAST(unsigned long *, s->trunks);
2536 case PORT_VLAN_NATIVE_UNTAGGED:
2537 case PORT_VLAN_NATIVE_TAGGED:
2538 if (vlan != 0 && (!s->trunks
2539 || !bitmap_is_set(s->trunks, vlan)
2540 || bitmap_is_set(s->trunks, 0))) {
2541 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2543 trunks = bitmap_clone(s->trunks, 4096);
2545 trunks = bitmap_allocate1(4096);
2547 bitmap_set1(trunks, vlan);
2548 bitmap_set0(trunks, 0);
2550 trunks = CONST_CAST(unsigned long *, s->trunks);
2557 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
2558 free(bundle->trunks);
2559 if (trunks == s->trunks) {
2560 bundle->trunks = vlan_bitmap_clone(trunks);
2562 bundle->trunks = trunks;
2567 if (trunks != s->trunks) {
2572 if (!list_is_short(&bundle->ports)) {
2573 bundle->ofproto->has_bonded_bundles = true;
2575 if (bond_reconfigure(bundle->bond, s->bond)) {
2576 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2579 bundle->bond = bond_create(s->bond);
2580 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2583 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2584 bond_slave_register(bundle->bond, port, port->up.netdev);
2587 bond_unref(bundle->bond);
2588 bundle->bond = NULL;
2591 /* If we changed something that would affect MAC learning, un-learn
2592 * everything on this port and force flow revalidation. */
2594 bundle_flush_macs(bundle, false);
2601 bundle_remove(struct ofport *port_)
2603 struct ofport_dpif *port = ofport_dpif_cast(port_);
2604 struct ofbundle *bundle = port->bundle;
2607 bundle_del_port(port);
2608 if (list_is_empty(&bundle->ports)) {
2609 bundle_destroy(bundle);
2610 } else if (list_is_short(&bundle->ports)) {
2611 bond_unref(bundle->bond);
2612 bundle->bond = NULL;
2618 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
2620 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
2621 struct ofport_dpif *port = port_;
2622 uint8_t ea[ETH_ADDR_LEN];
2625 error = netdev_get_etheraddr(port->up.netdev, ea);
2627 struct ofpbuf packet;
2630 ofpbuf_init(&packet, 0);
2631 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
2633 memcpy(packet_pdu, pdu, pdu_size);
2635 ofproto_dpif_send_packet(port, &packet);
2636 ofpbuf_uninit(&packet);
2638 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
2639 "%s (%s)", port->bundle->name,
2640 netdev_get_name(port->up.netdev), ovs_strerror(error));
2645 bundle_send_learning_packets(struct ofbundle *bundle)
2647 struct ofproto_dpif *ofproto = bundle->ofproto;
2648 struct ofpbuf *learning_packet;
2649 int error, n_packets, n_errors;
2650 struct mac_entry *e;
2651 struct list packets;
2653 list_init(&packets);
2654 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
2655 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
2656 if (e->port.p != bundle) {
2659 learning_packet = bond_compose_learning_packet(bundle->bond,
2662 learning_packet->private_p = port_void;
2663 list_push_back(&packets, &learning_packet->list_node);
2666 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2668 error = n_packets = n_errors = 0;
2669 LIST_FOR_EACH (learning_packet, list_node, &packets) {
2672 ret = ofproto_dpif_send_packet(learning_packet->private_p, learning_packet);
2679 ofpbuf_list_delete(&packets);
2682 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2683 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2684 "packets, last error was: %s",
2685 bundle->name, n_errors, n_packets, ovs_strerror(error));
2687 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2688 bundle->name, n_packets);
2693 bundle_run(struct ofbundle *bundle)
2696 lacp_run(bundle->lacp, send_pdu_cb);
2699 struct ofport_dpif *port;
2701 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2702 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
2705 if (bond_run(bundle->bond, lacp_status(bundle->lacp))) {
2706 bundle->ofproto->backer->need_revalidate = REV_BOND;
2709 if (bond_should_send_learning_packets(bundle->bond)) {
2710 bundle_send_learning_packets(bundle);
2716 bundle_wait(struct ofbundle *bundle)
2719 lacp_wait(bundle->lacp);
2722 bond_wait(bundle->bond);
2729 mirror_set__(struct ofproto *ofproto_, void *aux,
2730 const struct ofproto_mirror_settings *s)
2732 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2733 struct ofbundle **srcs, **dsts;
2738 mirror_destroy(ofproto->mbridge, aux);
2742 srcs = xmalloc(s->n_srcs * sizeof *srcs);
2743 dsts = xmalloc(s->n_dsts * sizeof *dsts);
2745 for (i = 0; i < s->n_srcs; i++) {
2746 srcs[i] = bundle_lookup(ofproto, s->srcs[i]);
2749 for (i = 0; i < s->n_dsts; i++) {
2750 dsts[i] = bundle_lookup(ofproto, s->dsts[i]);
2753 error = mirror_set(ofproto->mbridge, aux, s->name, srcs, s->n_srcs, dsts,
2754 s->n_dsts, s->src_vlans,
2755 bundle_lookup(ofproto, s->out_bundle), s->out_vlan);
2762 mirror_get_stats__(struct ofproto *ofproto, void *aux,
2763 uint64_t *packets, uint64_t *bytes)
2766 return mirror_get_stats(ofproto_dpif_cast(ofproto)->mbridge, aux, packets,
2771 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2773 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2774 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2775 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2776 mac_learning_flush(ofproto->ml);
2778 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2783 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2785 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2786 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2787 return bundle && mirror_bundle_out(ofproto->mbridge, bundle) != 0;
2791 forward_bpdu_changed(struct ofproto *ofproto_)
2793 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2794 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2798 set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
2801 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2802 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2803 mac_learning_set_idle_time(ofproto->ml, idle_time);
2804 mac_learning_set_max_entries(ofproto->ml, max_entries);
2805 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2810 static struct ofport_dpif *
2811 get_ofp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
2813 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2814 return ofport ? ofport_dpif_cast(ofport) : NULL;
2817 static struct ofport_dpif *
2818 get_odp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
2820 struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
2821 return port && &ofproto->up == port->up.ofproto ? port : NULL;
2825 ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
2826 struct ofproto_port *ofproto_port,
2827 struct dpif_port *dpif_port)
2829 ofproto_port->name = dpif_port->name;
2830 ofproto_port->type = dpif_port->type;
2831 ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
2835 ofport_update_peer(struct ofport_dpif *ofport)
2837 const struct ofproto_dpif *ofproto;
2838 struct dpif_backer *backer;
2841 if (!netdev_vport_is_patch(ofport->up.netdev)) {
2845 backer = ofproto_dpif_cast(ofport->up.ofproto)->backer;
2846 backer->need_revalidate = REV_RECONFIGURE;
2849 ofport->peer->peer = NULL;
2850 ofport->peer = NULL;
2853 peer_name = netdev_vport_patch_peer(ofport->up.netdev);
2858 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2859 struct ofport *peer_ofport;
2860 struct ofport_dpif *peer;
2863 if (ofproto->backer != backer) {
2867 peer_ofport = shash_find_data(&ofproto->up.port_by_name, peer_name);
2872 peer = ofport_dpif_cast(peer_ofport);
2873 peer_peer = netdev_vport_patch_peer(peer->up.netdev);
2874 if (peer_peer && !strcmp(netdev_get_name(ofport->up.netdev),
2876 ofport->peer = peer;
2877 ofport->peer->peer = ofport;
2887 port_run(struct ofport_dpif *ofport)
2889 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2890 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2891 bool enable = netdev_get_carrier(ofport->up.netdev);
2892 bool cfm_enable = false;
2893 bool bfd_enable = false;
2895 ofport->carrier_seq = carrier_seq;
2898 int cfm_opup = cfm_get_opup(ofport->cfm);
2900 cfm_enable = !cfm_get_fault(ofport->cfm);
2902 if (cfm_opup >= 0) {
2903 cfm_enable = cfm_enable && cfm_opup;
2908 bfd_enable = bfd_forwarding(ofport->bfd);
2911 if (ofport->bfd || ofport->cfm) {
2912 enable = enable && (cfm_enable || bfd_enable);
2915 if (ofport->bundle) {
2916 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2917 if (carrier_changed) {
2918 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
2922 if (ofport->may_enable != enable) {
2923 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2924 ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
2927 ofport->may_enable = enable;
2931 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2932 struct ofproto_port *ofproto_port)
2934 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2935 struct dpif_port dpif_port;
2938 if (sset_contains(&ofproto->ghost_ports, devname)) {
2939 const char *type = netdev_get_type_from_name(devname);
2941 /* We may be called before ofproto->up.port_by_name is populated with
2942 * the appropriate ofport. For this reason, we must get the name and
2943 * type from the netdev layer directly. */
2945 const struct ofport *ofport;
2947 ofport = shash_find_data(&ofproto->up.port_by_name, devname);
2948 ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
2949 ofproto_port->name = xstrdup(devname);
2950 ofproto_port->type = xstrdup(type);
2956 if (!sset_contains(&ofproto->ports, devname)) {
2959 error = dpif_port_query_by_name(ofproto->backer->dpif,
2960 devname, &dpif_port);
2962 ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
2968 port_add(struct ofproto *ofproto_, struct netdev *netdev)
2970 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2971 const char *devname = netdev_get_name(netdev);
2972 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
2973 const char *dp_port_name;
2975 if (netdev_vport_is_patch(netdev)) {
2976 sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
2980 dp_port_name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
2981 if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
2982 odp_port_t port_no = ODPP_NONE;
2985 error = dpif_port_add(ofproto->backer->dpif, netdev, &port_no);
2989 if (netdev_get_tunnel_config(netdev)) {
2990 simap_put(&ofproto->backer->tnl_backers,
2991 dp_port_name, odp_to_u32(port_no));
2995 if (netdev_get_tunnel_config(netdev)) {
2996 sset_add(&ofproto->ghost_ports, devname);
2998 sset_add(&ofproto->ports, devname);
3004 port_del(struct ofproto *ofproto_, ofp_port_t ofp_port)
3006 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3007 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
3014 sset_find_and_delete(&ofproto->ghost_ports,
3015 netdev_get_name(ofport->up.netdev));
3016 ofproto->backer->need_revalidate = REV_RECONFIGURE;
3017 if (!ofport->is_tunnel && !netdev_vport_is_patch(ofport->up.netdev)) {
3018 error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
3020 /* The caller is going to close ofport->up.netdev. If this is a
3021 * bonded port, then the bond is using that netdev, so remove it
3022 * from the bond. The client will need to reconfigure everything
3023 * after deleting ports, so then the slave will get re-added. */
3024 bundle_remove(&ofport->up);
3031 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
3033 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3038 error = netdev_get_stats(ofport->up.netdev, stats);
3040 if (!error && ofport_->ofp_port == OFPP_LOCAL) {
3041 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3043 ovs_mutex_lock(&ofproto->stats_mutex);
3044 /* ofproto->stats.tx_packets represents packets that we created
3045 * internally and sent to some port (e.g. packets sent with
3046 * ofproto_dpif_send_packet()). Account for them as if they had
3047 * come from OFPP_LOCAL and got forwarded. */
3049 if (stats->rx_packets != UINT64_MAX) {
3050 stats->rx_packets += ofproto->stats.tx_packets;
3053 if (stats->rx_bytes != UINT64_MAX) {
3054 stats->rx_bytes += ofproto->stats.tx_bytes;
3057 /* ofproto->stats.rx_packets represents packets that were received on
3058 * some port and we processed internally and dropped (e.g. STP).
3059 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3061 if (stats->tx_packets != UINT64_MAX) {
3062 stats->tx_packets += ofproto->stats.rx_packets;
3065 if (stats->tx_bytes != UINT64_MAX) {
3066 stats->tx_bytes += ofproto->stats.rx_bytes;
3068 ovs_mutex_unlock(&ofproto->stats_mutex);
3074 struct port_dump_state {
3079 struct ofproto_port port;
3084 port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
3086 *statep = xzalloc(sizeof(struct port_dump_state));
3091 port_dump_next(const struct ofproto *ofproto_, void *state_,
3092 struct ofproto_port *port)
3094 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3095 struct port_dump_state *state = state_;
3096 const struct sset *sset;
3097 struct sset_node *node;
3099 if (state->has_port) {
3100 ofproto_port_destroy(&state->port);
3101 state->has_port = false;
3103 sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
3104 while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
3107 error = port_query_by_name(ofproto_, node->name, &state->port);
3109 *port = state->port;
3110 state->has_port = true;
3112 } else if (error != ENODEV) {
3117 if (!state->ghost) {
3118 state->ghost = true;
3121 return port_dump_next(ofproto_, state_, port);
3128 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
3130 struct port_dump_state *state = state_;
3132 if (state->has_port) {
3133 ofproto_port_destroy(&state->port);
3140 port_poll(const struct ofproto *ofproto_, char **devnamep)
3142 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3144 if (ofproto->port_poll_errno) {
3145 int error = ofproto->port_poll_errno;
3146 ofproto->port_poll_errno = 0;
3150 if (sset_is_empty(&ofproto->port_poll_set)) {
3154 *devnamep = sset_pop(&ofproto->port_poll_set);
3159 port_poll_wait(const struct ofproto *ofproto_)
3161 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3162 dpif_port_poll_wait(ofproto->backer->dpif);
3166 port_is_lacp_current(const struct ofport *ofport_)
3168 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3169 return (ofport->bundle && ofport->bundle->lacp
3170 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
3174 /* Upcall handling. */
3176 struct flow_miss_op {
3177 struct dpif_op dpif_op;
3179 uint64_t slow_stub[128 / 8]; /* Buffer for compose_slow_path() */
3180 struct xlate_out xout;
3181 bool xout_garbage; /* 'xout' needs to be uninitialized? */
3183 struct ofpbuf mask; /* Flow mask for "put" ops. */
3184 struct odputil_keybuf maskbuf;
3186 /* If this is a "put" op, then a pointer to the subfacet that should
3187 * be marked as uninstalled if the operation fails. */
3188 struct subfacet *subfacet;
3191 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3192 * 'miss' masked by 'wc', is likely to be worth tracking in detail in userspace
3193 * and (usually) installing a datapath flow. The answer is usually "yes" (a
3194 * return value of true). However, for short flows the cost of bookkeeping is
3195 * much higher than the benefits, so when the datapath holds a large number of
3196 * flows we impose some heuristics to decide which flows are likely to be worth
3199 flow_miss_should_make_facet(struct flow_miss *miss)
3201 struct dpif_backer *backer = miss->ofproto->backer;
3204 switch (flow_miss_model) {
3205 case OFPROTO_HANDLE_MISS_AUTO:
3207 case OFPROTO_HANDLE_MISS_WITH_FACETS:
3209 case OFPROTO_HANDLE_MISS_WITHOUT_FACETS:
3213 if (!backer->governor) {
3216 n_subfacets = hmap_count(&backer->subfacets);
3217 if (n_subfacets * 2 <= flow_eviction_threshold) {
3221 backer->governor = governor_create();
3224 hash = flow_hash_in_wildcards(&miss->flow, &miss->xout.wc, 0);
3225 return governor_should_install_flow(backer->governor, hash,
3226 miss->stats.n_packets);
3229 /* Handles 'miss', which matches 'facet'. May add any required datapath
3230 * operations to 'ops', incrementing '*n_ops' for each new op.
3232 * All of the packets in 'miss' are considered to have arrived at time
3233 * 'miss->stats.used'. This is really important only for new facets: if we
3234 * just called time_msec() here, then the new subfacet or its packets could
3235 * look (occasionally) as though it was used some time after the facet was
3236 * used. That can make a one-packet flow look like it has a nonzero duration,
3237 * which looks odd in e.g. NetFlow statistics. */
3239 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
3240 struct flow_miss_op *ops, size_t *n_ops)
3242 enum subfacet_path want_path;
3243 struct subfacet *subfacet;
3246 /* Update facet stats. */
3247 facet->packet_count += miss->stats.n_packets;
3248 facet->prev_packet_count += miss->stats.n_packets;
3249 facet->byte_count += miss->stats.n_bytes;
3250 facet->prev_byte_count += miss->stats.n_bytes;
3252 /* Look for an existing subfacet. If we find one, update its used time. */
3253 key_hash = odp_flow_key_hash(miss->key, miss->key_len);
3254 if (!list_is_empty(&facet->subfacets)) {
3255 subfacet = subfacet_find(miss->ofproto->backer,
3256 miss->key, miss->key_len, key_hash);
3258 if (subfacet->facet == facet) {
3259 subfacet->used = MAX(subfacet->used, miss->stats.used);
3261 /* This shouldn't happen. */
3262 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
3263 subfacet_destroy(subfacet);
3271 /* Don't install the flow if it's the result of the "userspace"
3272 * action for an already installed facet. This can occur when a
3273 * datapath flow with wildcards has a "userspace" action and flows
3274 * sent to userspace result in a different subfacet, which will then
3275 * be rejected as overlapping by the datapath. */
3276 if (miss->upcall_type == DPIF_UC_ACTION
3277 && !list_is_empty(&facet->subfacets)) {
3281 /* Create a subfacet, if we don't already have one. */
3283 subfacet = subfacet_create(facet, miss, key_hash);
3286 /* Install the subfacet, if it's not already installed. */
3287 want_path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
3288 if (subfacet->path != want_path) {
3289 struct flow_miss_op *op = &ops[(*n_ops)++];
3290 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
3292 subfacet->path = want_path;
3294 ofpbuf_use_stack(&op->mask, &op->maskbuf, sizeof op->maskbuf);
3295 if (enable_megaflows) {
3296 odp_flow_key_from_mask(&op->mask, &facet->xout.wc.masks,
3297 &miss->flow, UINT32_MAX);
3300 op->xout_garbage = false;
3301 op->dpif_op.type = DPIF_OP_FLOW_PUT;
3302 op->subfacet = subfacet;
3303 put->flags = DPIF_FP_CREATE;
3304 put->key = miss->key;
3305 put->key_len = miss->key_len;
3306 put->mask = op->mask.data;
3307 put->mask_len = op->mask.size;
3309 if (want_path == SF_FAST_PATH) {
3310 put->actions = facet->xout.odp_actions.data;
3311 put->actions_len = facet->xout.odp_actions.size;
3313 compose_slow_path(facet->ofproto, &miss->flow, facet->xout.slow,
3314 op->slow_stub, sizeof op->slow_stub,
3315 &put->actions, &put->actions_len);
3321 /* Handles flow miss 'miss'. May add any required datapath operations
3322 * to 'ops', incrementing '*n_ops' for each new op. */
3324 handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
3327 struct facet *facet;
3329 miss->ofproto->n_missed += miss->stats.n_packets;
3331 facet = facet_lookup_valid(miss->ofproto, &miss->flow);
3333 /* There does not exist a bijection between 'struct flow' and datapath
3334 * flow keys with fitness ODP_FIT_TO_LITTLE. This breaks a fundamental
3335 * assumption used throughout the facet and subfacet handling code.
3336 * Since we have to handle these misses in userspace anyway, we simply
3337 * skip facet creation, avoiding the problem altogether. */
3338 if (miss->key_fitness == ODP_FIT_TOO_LITTLE
3339 || !flow_miss_should_make_facet(miss)) {
3343 facet = facet_create(miss);
3345 handle_flow_miss_with_facet(miss, facet, ops, n_ops);
3348 static struct drop_key *
3349 drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
3352 struct drop_key *drop_key;
3354 HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
3355 &backer->drop_keys) {
3356 if (drop_key->key_len == key_len
3357 && !memcmp(drop_key->key, key, key_len)) {
3365 drop_key_clear(struct dpif_backer *backer)
3367 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3368 struct drop_key *drop_key, *next;
3370 HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
3373 error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
3375 if (error && !VLOG_DROP_WARN(&rl)) {
3376 struct ds ds = DS_EMPTY_INITIALIZER;
3377 odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
3378 VLOG_WARN("Failed to delete drop key (%s) (%s)",
3379 ovs_strerror(error), ds_cstr(&ds));
3383 hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
3384 drop_key_destroy(drop_key);
3387 udpif_drop_key_clear(backer->udpif);
3391 handle_flow_misses(struct dpif_backer *backer, struct flow_miss_batch *fmb)
3393 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH];
3394 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH];
3395 struct flow_miss *miss;
3398 /* Process each element in the to-do list, constructing the set of
3399 * operations to batch. */
3401 HMAP_FOR_EACH (miss, hmap_node, &fmb->misses) {
3402 handle_flow_miss(miss, flow_miss_ops, &n_ops);
3404 ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
3406 /* Execute batch. */
3407 for (i = 0; i < n_ops; i++) {
3408 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
3410 dpif_operate(backer->dpif, dpif_ops, n_ops);
3412 for (i = 0; i < n_ops; i++) {
3413 if (dpif_ops[i]->error != 0
3414 && flow_miss_ops[i].dpif_op.type == DPIF_OP_FLOW_PUT
3415 && flow_miss_ops[i].subfacet) {
3416 struct subfacet *subfacet = flow_miss_ops[i].subfacet;
3418 COVERAGE_INC(subfacet_install_fail);
3420 /* Zero-out subfacet counters when installation failed, but
3421 * datapath reported hits. This should not happen and
3422 * indicates a bug, since if the datapath flow exists, we
3423 * should not be attempting to create a new subfacet. A
3424 * buggy datapath could trigger this, so just zero out the
3425 * counters and log an error. */
3426 if (subfacet->dp_packet_count || subfacet->dp_byte_count) {
3427 VLOG_ERR_RL(&rl, "failed to install subfacet for which "
3428 "datapath reported hits");
3429 subfacet->dp_packet_count = subfacet->dp_byte_count = 0;
3432 subfacet->path = SF_NOT_INSTALLED;
3438 handle_upcalls(struct dpif_backer *backer)
3440 struct flow_miss_batch *fmb;
3443 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3444 struct drop_key *drop_key = drop_key_next(backer->udpif);
3449 if (!drop_key_lookup(backer, drop_key->key, drop_key->key_len)) {
3450 hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
3451 hash_bytes(drop_key->key, drop_key->key_len, 0));
3452 dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
3453 drop_key->key, drop_key->key_len,
3454 NULL, 0, NULL, 0, NULL);
3456 drop_key_destroy(drop_key);
3460 fmb = flow_miss_batch_next(backer->udpif);
3462 handle_flow_misses(backer, fmb);
3463 flow_miss_batch_destroy(fmb);
3467 /* Flow expiration. */
3469 static int subfacet_max_idle(const struct dpif_backer *);
3470 static void update_stats(struct dpif_backer *);
3471 static void rule_expire(struct rule_dpif *) OVS_REQUIRES(ofproto_mutex);
3472 static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
3474 /* This function is called periodically by run(). Its job is to collect
3475 * updates for the flows that have been installed into the datapath, most
3476 * importantly when they last were used, and then use that information to
3477 * expire flows that have not been used recently.
3479 * Returns the number of milliseconds after which it should be called again. */
3481 expire(struct dpif_backer *backer)
3483 struct ofproto_dpif *ofproto;
3487 /* Periodically clear out the drop keys in an effort to keep them
3488 * relatively few. */
3489 drop_key_clear(backer);
3491 /* Update stats for each flow in the backer. */
3492 update_stats(backer);
3494 n_subfacets = hmap_count(&backer->subfacets);
3496 struct subfacet *subfacet;
3497 long long int total, now;
3501 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3502 total += now - subfacet->created;
3504 backer->avg_subfacet_life += total / n_subfacets;
3506 backer->avg_subfacet_life /= 2;
3508 backer->avg_n_subfacet += n_subfacets;
3509 backer->avg_n_subfacet /= 2;
3511 backer->max_n_subfacet = MAX(backer->max_n_subfacet, n_subfacets);
3513 max_idle = subfacet_max_idle(backer);
3514 expire_subfacets(backer, max_idle);
3516 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
3517 struct rule *rule, *next_rule;
3519 if (ofproto->backer != backer) {
3523 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
3525 ovs_mutex_lock(&ofproto_mutex);
3526 LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
3527 &ofproto->up.expirable) {
3528 rule_expire(rule_dpif_cast(rule));
3530 ovs_mutex_unlock(&ofproto_mutex);
3532 /* All outstanding data in existing flows has been accounted, so it's a
3533 * good time to do bond rebalancing. */
3534 if (ofproto->has_bonded_bundles) {
3535 struct ofbundle *bundle;
3537 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
3539 bond_rebalance(bundle->bond);
3545 return MIN(max_idle, 1000);
3548 /* Updates flow table statistics given that the datapath just reported 'stats'
3549 * as 'subfacet''s statistics. */
3551 update_subfacet_stats(struct subfacet *subfacet,
3552 const struct dpif_flow_stats *stats)
3554 struct facet *facet = subfacet->facet;
3555 struct dpif_flow_stats diff;
3557 diff.tcp_flags = stats->tcp_flags;
3558 diff.used = stats->used;
3560 if (stats->n_packets >= subfacet->dp_packet_count) {
3561 diff.n_packets = stats->n_packets - subfacet->dp_packet_count;
3563 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
3567 if (stats->n_bytes >= subfacet->dp_byte_count) {
3568 diff.n_bytes = stats->n_bytes - subfacet->dp_byte_count;
3570 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
3574 facet->ofproto->n_hit += diff.n_packets;
3575 subfacet->dp_packet_count = stats->n_packets;
3576 subfacet->dp_byte_count = stats->n_bytes;
3577 subfacet_update_stats(subfacet, &diff);
3579 if (facet->accounted_bytes < facet->byte_count) {
3581 facet_account(facet);
3582 facet->accounted_bytes = facet->byte_count;
3586 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
3587 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
3589 delete_unexpected_flow(struct dpif_backer *backer,
3590 const struct nlattr *key, size_t key_len)
3592 if (!VLOG_DROP_WARN(&rl)) {
3596 odp_flow_key_format(key, key_len, &s);
3597 VLOG_WARN("unexpected flow: %s", ds_cstr(&s));
3601 COVERAGE_INC(facet_unexpected);
3602 dpif_flow_del(backer->dpif, key, key_len, NULL);
3605 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3607 * This function also pushes statistics updates to rules which each facet
3608 * resubmits into. Generally these statistics will be accurate. However, if a
3609 * facet changes the rule it resubmits into at some time in between
3610 * update_stats() runs, it is possible that statistics accrued to the
3611 * old rule will be incorrectly attributed to the new rule. This could be
3612 * avoided by calling update_stats() whenever rules are created or
3613 * deleted. However, the performance impact of making so many calls to the
3614 * datapath do not justify the benefit of having perfectly accurate statistics.
3616 * In addition, this function maintains per ofproto flow hit counts. The patch
3617 * port is not treated specially. e.g. A packet ingress from br0 patched into
3618 * br1 will increase the hit count of br0 by 1, however, does not affect
3619 * the hit or miss counts of br1.
3622 update_stats(struct dpif_backer *backer)
3624 const struct dpif_flow_stats *stats;
3625 struct dpif_flow_dump dump;
3626 const struct nlattr *key, *mask;
3627 size_t key_len, mask_len;
3629 dpif_flow_dump_start(&dump, backer->dpif);
3630 while (dpif_flow_dump_next(&dump, &key, &key_len,
3631 &mask, &mask_len, NULL, NULL, &stats)) {
3632 struct subfacet *subfacet;
3635 key_hash = odp_flow_key_hash(key, key_len);
3636 subfacet = subfacet_find(backer, key, key_len, key_hash);
3637 switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
3639 update_subfacet_stats(subfacet, stats);
3643 /* Stats are updated per-packet. */
3646 case SF_NOT_INSTALLED:
3648 delete_unexpected_flow(backer, key, key_len);
3653 dpif_flow_dump_done(&dump);
3656 /* Calculates and returns the number of milliseconds of idle time after which
3657 * subfacets should expire from the datapath. When a subfacet expires, we fold
3658 * its statistics into its facet, and when a facet's last subfacet expires, we
3659 * fold its statistic into its rule. */
3661 subfacet_max_idle(const struct dpif_backer *backer)
3664 * Idle time histogram.
3666 * Most of the time a switch has a relatively small number of subfacets.
3667 * When this is the case we might as well keep statistics for all of them
3668 * in userspace and to cache them in the kernel datapath for performance as
3671 * As the number of subfacets increases, the memory required to maintain
3672 * statistics about them in userspace and in the kernel becomes
3673 * significant. However, with a large number of subfacets it is likely
3674 * that only a few of them are "heavy hitters" that consume a large amount
3675 * of bandwidth. At this point, only heavy hitters are worth caching in
3676 * the kernel and maintaining in userspaces; other subfacets we can
3679 * The technique used to compute the idle time is to build a histogram with
3680 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3681 * that is installed in the kernel gets dropped in the appropriate bucket.
3682 * After the histogram has been built, we compute the cutoff so that only
3683 * the most-recently-used 1% of subfacets (but at least
3684 * flow_eviction_threshold flows) are kept cached. At least
3685 * the most-recently-used bucket of subfacets is kept, so actually an
3686 * arbitrary number of subfacets can be kept in any given expiration run
3687 * (though the next run will delete most of those unless they receive
3690 * This requires a second pass through the subfacets, in addition to the
3691 * pass made by update_stats(), because the former function never looks at
3692 * uninstallable subfacets.
3694 enum { BUCKET_WIDTH = 100 };
3695 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3696 int buckets[N_BUCKETS] = { 0 };
3697 int total, subtotal, bucket;
3698 struct subfacet *subfacet;
3702 total = hmap_count(&backer->subfacets);
3703 if (total <= flow_eviction_threshold) {
3704 return N_BUCKETS * BUCKET_WIDTH;
3707 /* Build histogram. */
3709 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3710 long long int idle = now - subfacet->used;
3711 int bucket = (idle <= 0 ? 0
3712 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3713 : (unsigned int) idle / BUCKET_WIDTH);
3717 /* Find the first bucket whose flows should be expired. */
3718 subtotal = bucket = 0;
3720 subtotal += buckets[bucket++];
3721 } while (bucket < N_BUCKETS &&
3722 subtotal < MAX(flow_eviction_threshold, total / 100));
3724 if (VLOG_IS_DBG_ENABLED()) {
3728 ds_put_cstr(&s, "keep");
3729 for (i = 0; i < N_BUCKETS; i++) {
3731 ds_put_cstr(&s, ", drop");
3734 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3737 VLOG_INFO("%s (msec:count)", ds_cstr(&s));
3741 return bucket * BUCKET_WIDTH;
3745 expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
3747 /* Cutoff time for most flows. */
3748 long long int normal_cutoff = time_msec() - dp_max_idle;
3750 /* We really want to keep flows for special protocols around, so use a more
3751 * conservative cutoff. */
3752 long long int special_cutoff = time_msec() - 10000;
3754 struct subfacet *subfacet, *next_subfacet;
3755 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
3759 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3760 &backer->subfacets) {
3761 long long int cutoff;
3763 cutoff = (subfacet->facet->xout.slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP
3767 if (subfacet->used < cutoff) {
3768 if (subfacet->path != SF_NOT_INSTALLED) {
3769 batch[n_batch++] = subfacet;
3770 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
3771 subfacet_destroy_batch(backer, batch, n_batch);
3775 subfacet_destroy(subfacet);
3781 subfacet_destroy_batch(backer, batch, n_batch);
3785 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3786 * then delete it entirely. */
3788 rule_expire(struct rule_dpif *rule)
3789 OVS_REQUIRES(ofproto_mutex)
3791 uint16_t idle_timeout, hard_timeout;
3792 long long int now = time_msec();
3795 ovs_assert(!rule->up.pending);
3797 /* Has 'rule' expired? */
3798 ovs_mutex_lock(&rule->up.mutex);
3799 hard_timeout = rule->up.hard_timeout;
3800 idle_timeout = rule->up.idle_timeout;
3801 if (hard_timeout && now > rule->up.modified + hard_timeout * 1000) {
3802 reason = OFPRR_HARD_TIMEOUT;
3803 } else if (idle_timeout && now > rule->up.used + idle_timeout * 1000) {
3804 reason = OFPRR_IDLE_TIMEOUT;
3808 ovs_mutex_unlock(&rule->up.mutex);
3811 COVERAGE_INC(ofproto_dpif_expired);
3812 ofproto_rule_expire(&rule->up, reason);
3818 /* Creates and returns a new facet based on 'miss'.
3820 * The caller must already have determined that no facet with an identical
3821 * 'miss->flow' exists in 'miss->ofproto'.
3823 * 'rule' and 'xout' must have been created based on 'miss'.
3825 * 'facet'' statistics are initialized based on 'stats'.
3827 * The facet will initially have no subfacets. The caller should create (at
3828 * least) one subfacet with subfacet_create(). */
3829 static struct facet *
3830 facet_create(const struct flow_miss *miss)
3832 struct ofproto_dpif *ofproto = miss->ofproto;
3833 struct facet *facet;
3836 COVERAGE_INC(facet_create);
3837 facet = xzalloc(sizeof *facet);
3838 facet->ofproto = miss->ofproto;
3839 facet->used = miss->stats.used;
3840 facet->flow = miss->flow;
3841 facet->learn_rl = time_msec() + 500;
3843 list_init(&facet->subfacets);
3844 netflow_flow_init(&facet->nf_flow);
3845 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3847 xlate_out_copy(&facet->xout, &miss->xout);
3849 match_init(&match, &facet->flow, &facet->xout.wc);
3850 cls_rule_init(&facet->cr, &match, OFP_DEFAULT_PRIORITY);
3851 ovs_rwlock_wrlock(&ofproto->facets.rwlock);
3852 classifier_insert(&ofproto->facets, &facet->cr);
3853 ovs_rwlock_unlock(&ofproto->facets.rwlock);
3855 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
3860 facet_free(struct facet *facet)
3863 xlate_out_uninit(&facet->xout);
3868 /* Executes, within 'ofproto', the actions in 'rule' or 'ofpacts' on 'packet'.
3869 * 'flow' must reflect the data in 'packet'. */
3871 ofproto_dpif_execute_actions(struct ofproto_dpif *ofproto,
3872 const struct flow *flow,
3873 struct rule_dpif *rule,
3874 const struct ofpact *ofpacts, size_t ofpacts_len,
3875 struct ofpbuf *packet)
3877 struct odputil_keybuf keybuf;
3878 struct dpif_flow_stats stats;
3879 struct xlate_out xout;
3880 struct xlate_in xin;
3885 ovs_assert((rule != NULL) != (ofpacts != NULL));
3887 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
3889 rule_dpif_credit_stats(rule, &stats);
3892 xlate_in_init(&xin, ofproto, flow, rule, stats.tcp_flags, packet);
3893 xin.ofpacts = ofpacts;
3894 xin.ofpacts_len = ofpacts_len;
3895 xin.resubmit_stats = &stats;
3896 xlate_actions(&xin, &xout);
3898 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
3899 in_port = flow->in_port.ofp_port;
3900 if (in_port == OFPP_NONE) {
3901 in_port = OFPP_LOCAL;
3903 odp_flow_key_from_flow(&key, flow, ofp_port_to_odp_port(ofproto, in_port));
3905 error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
3906 xout.odp_actions.data, xout.odp_actions.size, packet,
3907 (xout.slow & SLOW_ACTION) != 0);
3908 xlate_out_uninit(&xout);
3913 /* Remove 'facet' from its ofproto and free up the associated memory:
3915 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3916 * rule's statistics, via subfacet_uninstall().
3918 * - Removes 'facet' from its rule and from ofproto->facets.
3921 facet_remove(struct facet *facet)
3923 struct subfacet *subfacet, *next_subfacet;
3925 COVERAGE_INC(facet_remove);
3926 ovs_assert(!list_is_empty(&facet->subfacets));
3928 /* First uninstall all of the subfacets to get final statistics. */
3929 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3930 subfacet_uninstall(subfacet);
3933 /* Flush the final stats to the rule.
3935 * This might require us to have at least one subfacet around so that we
3936 * can use its actions for accounting in facet_account(), which is why we
3937 * have uninstalled but not yet destroyed the subfacets. */
3938 facet_flush_stats(facet);
3940 /* Now we're really all done so destroy everything. */
3941 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
3942 &facet->subfacets) {
3943 subfacet_destroy__(subfacet);
3945 ovs_rwlock_wrlock(&facet->ofproto->facets.rwlock);
3946 classifier_remove(&facet->ofproto->facets, &facet->cr);
3947 ovs_rwlock_unlock(&facet->ofproto->facets.rwlock);
3948 cls_rule_destroy(&facet->cr);
3952 /* Feed information from 'facet' back into the learning table to keep it in
3953 * sync with what is actually flowing through the datapath. */
3955 facet_learn(struct facet *facet)
3957 long long int now = time_msec();
3959 if (!facet->xout.has_fin_timeout && now < facet->learn_rl) {
3963 facet->learn_rl = now + 500;
3965 if (!facet->xout.has_learn
3966 && !facet->xout.has_normal
3967 && (!facet->xout.has_fin_timeout
3968 || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
3972 facet_push_stats(facet, true);
3976 facet_account(struct facet *facet)
3978 const struct nlattr *a;
3983 if (!facet->xout.has_normal || !facet->ofproto->has_bonded_bundles) {
3986 n_bytes = facet->byte_count - facet->accounted_bytes;
3988 /* This loop feeds byte counters to bond_account() for rebalancing to use
3989 * as a basis. We also need to track the actual VLAN on which the packet
3990 * is going to be sent to ensure that it matches the one passed to
3991 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3994 * We use the actions from an arbitrary subfacet because they should all
3995 * be equally valid for our purpose. */
3996 vlan_tci = facet->flow.vlan_tci;
3997 NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->xout.odp_actions.data,
3998 facet->xout.odp_actions.size) {
3999 const struct ovs_action_push_vlan *vlan;
4000 struct ofport_dpif *port;
4002 switch (nl_attr_type(a)) {
4003 case OVS_ACTION_ATTR_OUTPUT:
4004 port = get_odp_port(facet->ofproto, nl_attr_get_odp_port(a));
4005 if (port && port->bundle && port->bundle->bond) {
4006 bond_account(port->bundle->bond, &facet->flow,
4007 vlan_tci_to_vid(vlan_tci), n_bytes);
4011 case OVS_ACTION_ATTR_POP_VLAN:
4012 vlan_tci = htons(0);
4015 case OVS_ACTION_ATTR_PUSH_VLAN:
4016 vlan = nl_attr_get(a);
4017 vlan_tci = vlan->vlan_tci;
4023 /* Returns true if the only action for 'facet' is to send to the controller.
4024 * (We don't report NetFlow expiration messages for such facets because they
4025 * are just part of the control logic for the network, not real traffic). */
4027 facet_is_controller_flow(struct facet *facet)
4030 struct ofproto_dpif *ofproto = facet->ofproto;
4031 const struct ofpact *ofpacts;
4032 struct rule_actions *actions;
4033 struct rule_dpif *rule;
4037 rule_dpif_lookup(ofproto, &facet->flow, NULL, &rule);
4038 actions = rule_dpif_get_actions(rule);
4039 rule_dpif_unref(rule);
4041 ofpacts_len = actions->ofpacts_len;
4042 ofpacts = actions->ofpacts;
4043 is_controller = ofpacts_len > 0
4044 && ofpacts->type == OFPACT_CONTROLLER
4045 && ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len);
4046 rule_actions_unref(actions);
4048 return is_controller;
4053 /* Folds all of 'facet''s statistics into its rule. Also updates the
4054 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4055 * 'facet''s statistics in the datapath should have been zeroed and folded into
4056 * its packet and byte counts before this function is called. */
4058 facet_flush_stats(struct facet *facet)
4060 struct ofproto_dpif *ofproto = facet->ofproto;
4061 struct subfacet *subfacet;
4063 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4064 ovs_assert(!subfacet->dp_byte_count);
4065 ovs_assert(!subfacet->dp_packet_count);
4068 facet_push_stats(facet, false);
4069 if (facet->accounted_bytes < facet->byte_count) {
4070 facet_account(facet);
4071 facet->accounted_bytes = facet->byte_count;
4074 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
4075 struct ofexpired expired;
4076 expired.flow = facet->flow;
4077 expired.packet_count = facet->packet_count;
4078 expired.byte_count = facet->byte_count;
4079 expired.used = facet->used;
4080 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
4083 /* Reset counters to prevent double counting if 'facet' ever gets
4085 facet_reset_counters(facet);
4087 netflow_flow_clear(&facet->nf_flow);
4088 facet->tcp_flags = 0;
4091 /* Searches 'ofproto''s table of facets for one which would be responsible for
4092 * 'flow'. Returns it if found, otherwise a null pointer.
4094 * The returned facet might need revalidation; use facet_lookup_valid()
4095 * instead if that is important. */
4096 static struct facet *
4097 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
4099 struct cls_rule *cr;
4101 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4102 cr = classifier_lookup(&ofproto->facets, flow, NULL);
4103 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4104 return cr ? CONTAINER_OF(cr, struct facet, cr) : NULL;
4107 /* Searches 'ofproto''s table of facets for one capable that covers
4108 * 'flow'. Returns it if found, otherwise a null pointer.
4110 * The returned facet is guaranteed to be valid. */
4111 static struct facet *
4112 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
4114 struct facet *facet;
4116 facet = facet_find(ofproto, flow);
4118 && ofproto->backer->need_revalidate
4119 && !facet_revalidate(facet)) {
4127 facet_check_consistency(struct facet *facet)
4129 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
4131 struct xlate_out xout;
4132 struct xlate_in xin;
4135 /* Check the datapath actions for consistency. */
4136 xlate_in_init(&xin, facet->ofproto, &facet->flow, NULL, 0, NULL);
4137 xlate_actions(&xin, &xout);
4139 ok = ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)
4140 && facet->xout.slow == xout.slow;
4141 if (!ok && !VLOG_DROP_WARN(&rl)) {
4142 struct ds s = DS_EMPTY_INITIALIZER;
4144 flow_format(&s, &facet->flow);
4145 ds_put_cstr(&s, ": inconsistency in facet");
4147 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4148 ds_put_cstr(&s, " (actions were: ");
4149 format_odp_actions(&s, facet->xout.odp_actions.data,
4150 facet->xout.odp_actions.size);
4151 ds_put_cstr(&s, ") (correct actions: ");
4152 format_odp_actions(&s, xout.odp_actions.data,
4153 xout.odp_actions.size);
4154 ds_put_char(&s, ')');
4157 if (facet->xout.slow != xout.slow) {
4158 ds_put_format(&s, " slow path incorrect. should be %d", xout.slow);
4163 xlate_out_uninit(&xout);
4168 /* Re-searches the classifier for 'facet':
4170 * - If the rule found is different from 'facet''s current rule, moves
4171 * 'facet' to the new rule and recompiles its actions.
4173 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4174 * where it is and recompiles its actions anyway.
4176 * - If any of 'facet''s subfacets correspond to a new flow according to
4177 * xlate_receive(), 'facet' is removed.
4179 * Returns true if 'facet' is still valid. False if 'facet' was removed. */
4181 facet_revalidate(struct facet *facet)
4183 struct ofproto_dpif *ofproto = facet->ofproto;
4184 struct rule_dpif *new_rule;
4185 struct subfacet *subfacet;
4186 struct flow_wildcards wc;
4187 struct xlate_out xout;
4188 struct xlate_in xin;
4190 COVERAGE_INC(facet_revalidate);
4192 /* Check that child subfacets still correspond to this facet. Tunnel
4193 * configuration changes could cause a subfacet's OpenFlow in_port to
4195 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4196 struct ofproto_dpif *recv_ofproto;
4197 struct flow recv_flow;
4200 error = xlate_receive(ofproto->backer, NULL, subfacet->key,
4201 subfacet->key_len, &recv_flow, NULL,
4202 &recv_ofproto, NULL);
4204 || recv_ofproto != ofproto
4205 || facet != facet_find(ofproto, &recv_flow)) {
4206 facet_remove(facet);
4211 flow_wildcards_init_catchall(&wc);
4212 rule_dpif_lookup(ofproto, &facet->flow, &wc, &new_rule);
4214 /* Calculate new datapath actions.
4216 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4217 * emit a NetFlow expiration and, if so, we need to have the old state
4218 * around to properly compose it. */
4219 xlate_in_init(&xin, ofproto, &facet->flow, new_rule, 0, NULL);
4220 xlate_actions(&xin, &xout);
4221 flow_wildcards_or(&xout.wc, &xout.wc, &wc);
4222 /* Make sure non -packet fields are not masked. If not cleared,
4223 * the memcmp() below may fail, causing an otherwise valid facet
4225 flow_wildcards_clear_non_packet_fields(&xout.wc);
4227 /* A facet's slow path reason should only change under dramatic
4228 * circumstances. Rather than try to update everything, it's simpler to
4229 * remove the facet and start over.
4231 * More importantly, if a facet's wildcards change, it will be relatively
4232 * difficult to figure out if its subfacets still belong to it, and if not
4233 * which facet they may belong to. Again, to avoid the complexity, we
4234 * simply give up instead. */
4235 if (facet->xout.slow != xout.slow
4236 || memcmp(&facet->xout.wc, &xout.wc, sizeof xout.wc)) {
4237 facet_remove(facet);
4238 xlate_out_uninit(&xout);
4239 rule_dpif_unref(new_rule);
4243 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4244 LIST_FOR_EACH(subfacet, list_node, &facet->subfacets) {
4245 if (subfacet->path == SF_FAST_PATH) {
4246 struct dpif_flow_stats stats;
4248 subfacet_install(subfacet, &xout.odp_actions, &stats);
4249 subfacet_update_stats(subfacet, &stats);
4253 facet_flush_stats(facet);
4255 ofpbuf_clear(&facet->xout.odp_actions);
4256 ofpbuf_put(&facet->xout.odp_actions, xout.odp_actions.data,
4257 xout.odp_actions.size);
4260 /* Update 'facet' now that we've taken care of all the old state. */
4261 facet->xout.slow = xout.slow;
4262 facet->xout.has_learn = xout.has_learn;
4263 facet->xout.has_normal = xout.has_normal;
4264 facet->xout.has_fin_timeout = xout.has_fin_timeout;
4265 facet->xout.nf_output_iface = xout.nf_output_iface;
4266 facet->xout.mirrors = xout.mirrors;
4267 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4269 ovs_mutex_lock(&new_rule->up.mutex);
4270 facet->used = MAX(facet->used, new_rule->up.created);
4271 ovs_mutex_unlock(&new_rule->up.mutex);
4273 xlate_out_uninit(&xout);
4274 rule_dpif_unref(new_rule);
4279 facet_reset_counters(struct facet *facet)
4281 facet->packet_count = 0;
4282 facet->byte_count = 0;
4283 facet->prev_packet_count = 0;
4284 facet->prev_byte_count = 0;
4285 facet->accounted_bytes = 0;
4289 flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
4290 struct dpif_flow_stats *stats, bool may_learn)
4292 struct ofport_dpif *in_port;
4293 struct xlate_in xin;
4295 in_port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4296 if (in_port && in_port->is_tunnel) {
4297 netdev_vport_inc_rx(in_port->up.netdev, stats);
4299 bfd_account_rx(in_port->bfd, stats);
4303 xlate_in_init(&xin, ofproto, flow, NULL, stats->tcp_flags, NULL);
4304 xin.resubmit_stats = stats;
4305 xin.may_learn = may_learn;
4306 xlate_actions_for_side_effects(&xin);
4310 facet_push_stats(struct facet *facet, bool may_learn)
4312 struct dpif_flow_stats stats;
4314 ovs_assert(facet->packet_count >= facet->prev_packet_count);
4315 ovs_assert(facet->byte_count >= facet->prev_byte_count);
4316 ovs_assert(facet->used >= facet->prev_used);
4318 stats.n_packets = facet->packet_count - facet->prev_packet_count;
4319 stats.n_bytes = facet->byte_count - facet->prev_byte_count;
4320 stats.used = facet->used;
4321 stats.tcp_flags = facet->tcp_flags;
4323 if (may_learn || stats.n_packets || facet->used > facet->prev_used) {
4324 facet->prev_packet_count = facet->packet_count;
4325 facet->prev_byte_count = facet->byte_count;
4326 facet->prev_used = facet->used;
4328 netflow_flow_update_time(facet->ofproto->netflow, &facet->nf_flow,
4330 netflow_flow_update_flags(&facet->nf_flow, facet->tcp_flags);
4331 mirror_update_stats(facet->ofproto->mbridge, facet->xout.mirrors,
4332 stats.n_packets, stats.n_bytes);
4333 flow_push_stats(facet->ofproto, &facet->flow, &stats, may_learn);
4338 push_all_stats__(bool run_fast)
4340 static long long int rl = LLONG_MIN;
4341 struct ofproto_dpif *ofproto;
4343 if (time_msec() < rl) {
4347 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
4348 struct cls_cursor cursor;
4349 struct facet *facet;
4351 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4352 cls_cursor_init(&cursor, &ofproto->facets, NULL);
4353 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
4354 facet_push_stats(facet, false);
4359 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4362 rl = time_msec() + 100;
4366 push_all_stats(void)
4368 push_all_stats__(true);
4372 rule_dpif_credit_stats(struct rule_dpif *rule,
4373 const struct dpif_flow_stats *stats)
4375 ovs_mutex_lock(&rule->stats_mutex);
4376 rule->packet_count += stats->n_packets;
4377 rule->byte_count += stats->n_bytes;
4378 rule->up.used = MAX(rule->up.used, stats->used);
4379 ovs_mutex_unlock(&rule->stats_mutex);
4383 rule_dpif_is_fail_open(const struct rule_dpif *rule)
4385 return is_fail_open_rule(&rule->up);
4389 rule_dpif_is_table_miss(const struct rule_dpif *rule)
4391 return rule_is_table_miss(&rule->up);
4395 rule_dpif_get_flow_cookie(const struct rule_dpif *rule)
4396 OVS_REQUIRES(rule->up.mutex)
4398 return rule->up.flow_cookie;
4402 rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
4403 uint16_t hard_timeout)
4405 ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout);
4408 /* Returns 'rule''s actions. The caller owns a reference on the returned
4409 * actions and must eventually release it (with rule_actions_unref()) to avoid
4411 struct rule_actions *
4412 rule_dpif_get_actions(const struct rule_dpif *rule)
4414 return rule_get_actions(&rule->up);
4419 static struct subfacet *
4420 subfacet_find(struct dpif_backer *backer, const struct nlattr *key,
4421 size_t key_len, uint32_t key_hash)
4423 struct subfacet *subfacet;
4425 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
4426 &backer->subfacets) {
4427 if (subfacet->key_len == key_len
4428 && !memcmp(key, subfacet->key, key_len)) {
4436 /* Creates and returns a new subfacet within 'facet' for the flow in 'miss'.
4437 * 'key_hash' must be a hash over miss->key. The caller must have already
4438 * ensured that no subfacet subfacet already exists. */
4439 static struct subfacet *
4440 subfacet_create(struct facet *facet, struct flow_miss *miss, uint32_t key_hash)
4442 struct dpif_backer *backer = miss->ofproto->backer;
4443 const struct nlattr *key = miss->key;
4444 size_t key_len = miss->key_len;
4445 struct subfacet *subfacet;
4447 subfacet = (list_is_empty(&facet->subfacets)
4448 ? &facet->one_subfacet
4449 : xmalloc(sizeof *subfacet));
4451 COVERAGE_INC(subfacet_create);
4452 hmap_insert(&backer->subfacets, &subfacet->hmap_node, key_hash);
4453 list_push_back(&facet->subfacets, &subfacet->list_node);
4454 subfacet->facet = facet;
4455 subfacet->key = xmemdup(key, key_len);
4456 subfacet->key_len = key_len;
4457 subfacet->used = miss->stats.used;
4458 subfacet->created = subfacet->used;
4459 subfacet->dp_packet_count = 0;
4460 subfacet->dp_byte_count = 0;
4461 subfacet->path = SF_NOT_INSTALLED;
4462 subfacet->backer = backer;
4467 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4468 * its facet within 'ofproto', and frees it. */
4470 subfacet_destroy__(struct subfacet *subfacet)
4472 struct facet *facet = subfacet->facet;
4474 COVERAGE_INC(subfacet_destroy);
4475 subfacet_uninstall(subfacet);
4476 hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
4477 list_remove(&subfacet->list_node);
4478 free(subfacet->key);
4479 if (subfacet != &facet->one_subfacet) {
4484 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4485 * last remaining subfacet in its facet destroys the facet too. */
4487 subfacet_destroy(struct subfacet *subfacet)
4489 struct facet *facet = subfacet->facet;
4491 if (list_is_singleton(&facet->subfacets)) {
4492 /* facet_remove() needs at least one subfacet (it will remove it). */
4493 facet_remove(facet);
4495 subfacet_destroy__(subfacet);
4500 subfacet_destroy_batch(struct dpif_backer *backer,
4501 struct subfacet **subfacets, int n)
4503 struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
4504 struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
4505 struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
4508 for (i = 0; i < n; i++) {
4509 ops[i].type = DPIF_OP_FLOW_DEL;
4510 ops[i].u.flow_del.key = subfacets[i]->key;
4511 ops[i].u.flow_del.key_len = subfacets[i]->key_len;
4512 ops[i].u.flow_del.stats = &stats[i];
4516 dpif_operate(backer->dpif, opsp, n);
4517 for (i = 0; i < n; i++) {
4518 subfacet_reset_dp_stats(subfacets[i], &stats[i]);
4519 subfacets[i]->path = SF_NOT_INSTALLED;
4520 subfacet_destroy(subfacets[i]);
4525 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4526 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4527 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4528 * since 'subfacet' was last updated.
4530 * Returns 0 if successful, otherwise a positive errno value. */
4532 subfacet_install(struct subfacet *subfacet, const struct ofpbuf *odp_actions,
4533 struct dpif_flow_stats *stats)
4535 struct facet *facet = subfacet->facet;
4536 enum subfacet_path path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
4537 const struct nlattr *actions = odp_actions->data;
4538 size_t actions_len = odp_actions->size;
4539 struct odputil_keybuf maskbuf;
4542 uint64_t slow_path_stub[128 / 8];
4543 enum dpif_flow_put_flags flags;
4546 flags = subfacet->path == SF_NOT_INSTALLED ? DPIF_FP_CREATE
4549 flags |= DPIF_FP_ZERO_STATS;
4552 if (path == SF_SLOW_PATH) {
4553 compose_slow_path(facet->ofproto, &facet->flow, facet->xout.slow,
4554 slow_path_stub, sizeof slow_path_stub,
4555 &actions, &actions_len);
4558 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
4559 if (enable_megaflows) {
4560 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
4561 &facet->flow, UINT32_MAX);
4564 ret = dpif_flow_put(subfacet->backer->dpif, flags, subfacet->key,
4565 subfacet->key_len, mask.data, mask.size,
4566 actions, actions_len, stats);
4569 subfacet_reset_dp_stats(subfacet, stats);
4573 COVERAGE_INC(subfacet_install_fail);
4575 subfacet->path = path;
4580 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4582 subfacet_uninstall(struct subfacet *subfacet)
4584 if (subfacet->path != SF_NOT_INSTALLED) {
4585 struct ofproto_dpif *ofproto = subfacet->facet->ofproto;
4586 struct dpif_flow_stats stats;
4589 error = dpif_flow_del(ofproto->backer->dpif, subfacet->key,
4590 subfacet->key_len, &stats);
4591 subfacet_reset_dp_stats(subfacet, &stats);
4593 subfacet_update_stats(subfacet, &stats);
4595 subfacet->path = SF_NOT_INSTALLED;
4597 ovs_assert(subfacet->dp_packet_count == 0);
4598 ovs_assert(subfacet->dp_byte_count == 0);
4602 /* Resets 'subfacet''s datapath statistics counters. This should be called
4603 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4604 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4605 * was reset in the datapath. 'stats' will be modified to include only
4606 * statistics new since 'subfacet' was last updated. */
4608 subfacet_reset_dp_stats(struct subfacet *subfacet,
4609 struct dpif_flow_stats *stats)
4612 && subfacet->dp_packet_count <= stats->n_packets
4613 && subfacet->dp_byte_count <= stats->n_bytes) {
4614 stats->n_packets -= subfacet->dp_packet_count;
4615 stats->n_bytes -= subfacet->dp_byte_count;
4618 subfacet->dp_packet_count = 0;
4619 subfacet->dp_byte_count = 0;
4622 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4624 * Because of the meaning of a subfacet's counters, it only makes sense to do
4625 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4626 * represents a packet that was sent by hand or if it represents statistics
4627 * that have been cleared out of the datapath. */
4629 subfacet_update_stats(struct subfacet *subfacet,
4630 const struct dpif_flow_stats *stats)
4632 if (stats->n_packets || stats->used > subfacet->used) {
4633 struct facet *facet = subfacet->facet;
4635 subfacet->used = MAX(subfacet->used, stats->used);
4636 facet->used = MAX(facet->used, stats->used);
4637 facet->packet_count += stats->n_packets;
4638 facet->byte_count += stats->n_bytes;
4639 facet->tcp_flags |= stats->tcp_flags;
4645 /* Lookup 'flow' in 'ofproto''s classifier. If 'wc' is non-null, sets
4646 * the fields that were relevant as part of the lookup. */
4648 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4649 struct flow_wildcards *wc, struct rule_dpif **rule)
4651 struct ofport_dpif *port;
4653 if (rule_dpif_lookup_in_table(ofproto, flow, wc, 0, rule)) {
4656 port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4658 VLOG_WARN_RL(&rl, "packet-in on unknown OpenFlow port %"PRIu16,
4659 flow->in_port.ofp_port);
4662 choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
4663 ofproto->no_packet_in_rule, rule);
4667 rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
4668 const struct flow *flow, struct flow_wildcards *wc,
4669 uint8_t table_id, struct rule_dpif **rule)
4671 const struct cls_rule *cls_rule;
4672 struct classifier *cls;
4676 if (table_id >= N_TABLES) {
4681 memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
4682 wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
4685 cls = &ofproto->up.tables[table_id].cls;
4686 ovs_rwlock_rdlock(&cls->rwlock);
4687 frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
4688 if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4689 /* We must pretend that transport ports are unavailable. */
4690 struct flow ofpc_normal_flow = *flow;
4691 ofpc_normal_flow.tp_src = htons(0);
4692 ofpc_normal_flow.tp_dst = htons(0);
4693 cls_rule = classifier_lookup(cls, &ofpc_normal_flow, wc);
4694 } else if (frag && ofproto->up.frag_handling == OFPC_FRAG_DROP) {
4695 cls_rule = &ofproto->drop_frags_rule->up.cr;
4696 /* Frag mask in wc already set above. */
4698 cls_rule = classifier_lookup(cls, flow, wc);
4701 *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
4702 rule_dpif_ref(*rule);
4703 ovs_rwlock_unlock(&cls->rwlock);
4705 return *rule != NULL;
4708 /* Given a port configuration (specified as zero if there's no port), chooses
4709 * which of 'miss_rule' and 'no_packet_in_rule' should be used in case of a
4710 * flow table miss. */
4712 choose_miss_rule(enum ofputil_port_config config, struct rule_dpif *miss_rule,
4713 struct rule_dpif *no_packet_in_rule, struct rule_dpif **rule)
4715 *rule = config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
4716 rule_dpif_ref(*rule);
4720 rule_dpif_ref(struct rule_dpif *rule)
4723 ofproto_rule_ref(&rule->up);
4728 rule_dpif_unref(struct rule_dpif *rule)
4731 ofproto_rule_unref(&rule->up);
4736 complete_operation(struct rule_dpif *rule)
4737 OVS_REQUIRES(ofproto_mutex)
4739 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4741 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
4742 ofoperation_complete(rule->up.pending, 0);
4745 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
4747 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
4750 static struct rule *
4753 struct rule_dpif *rule = xmalloc(sizeof *rule);
4758 rule_dealloc(struct rule *rule_)
4760 struct rule_dpif *rule = rule_dpif_cast(rule_);
4765 rule_construct(struct rule *rule_)
4767 struct rule_dpif *rule = rule_dpif_cast(rule_);
4768 ovs_mutex_init(&rule->stats_mutex);
4769 ovs_mutex_lock(&rule->stats_mutex);
4770 rule->packet_count = 0;
4771 rule->byte_count = 0;
4772 ovs_mutex_unlock(&rule->stats_mutex);
4777 rule_insert(struct rule *rule_)
4778 OVS_REQUIRES(ofproto_mutex)
4780 struct rule_dpif *rule = rule_dpif_cast(rule_);
4781 complete_operation(rule);
4785 rule_delete(struct rule *rule_)
4786 OVS_REQUIRES(ofproto_mutex)
4788 struct rule_dpif *rule = rule_dpif_cast(rule_);
4789 complete_operation(rule);
4793 rule_destruct(struct rule *rule_)
4795 struct rule_dpif *rule = rule_dpif_cast(rule_);
4796 ovs_mutex_destroy(&rule->stats_mutex);
4800 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4802 struct rule_dpif *rule = rule_dpif_cast(rule_);
4804 /* push_all_stats() can handle flow misses which, when using the learn
4805 * action, can cause rules to be added and deleted. This can corrupt our
4806 * caller's datastructures which assume that rule_get_stats() doesn't have
4807 * an impact on the flow table. To be safe, we disable miss handling. */
4808 push_all_stats__(false);
4810 /* Start from historical data for 'rule' itself that are no longer tracked
4811 * in facets. This counts, for example, facets that have expired. */
4812 ovs_mutex_lock(&rule->stats_mutex);
4813 *packets = rule->packet_count;
4814 *bytes = rule->byte_count;
4815 ovs_mutex_unlock(&rule->stats_mutex);
4819 rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
4820 struct ofpbuf *packet)
4822 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4824 ofproto_dpif_execute_actions(ofproto, flow, rule, NULL, 0, packet);
4828 rule_execute(struct rule *rule, const struct flow *flow,
4829 struct ofpbuf *packet)
4831 rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
4832 ofpbuf_delete(packet);
4837 rule_modify_actions(struct rule *rule_, bool reset_counters)
4838 OVS_REQUIRES(ofproto_mutex)
4840 struct rule_dpif *rule = rule_dpif_cast(rule_);
4842 if (reset_counters) {
4843 ovs_mutex_lock(&rule->stats_mutex);
4844 rule->packet_count = 0;
4845 rule->byte_count = 0;
4846 ovs_mutex_unlock(&rule->stats_mutex);
4849 complete_operation(rule);
4852 static struct group_dpif *group_dpif_cast(const struct ofgroup *group)
4854 return group ? CONTAINER_OF(group, struct group_dpif, up) : NULL;
4857 static struct ofgroup *
4860 struct group_dpif *group = xzalloc(sizeof *group);
4865 group_dealloc(struct ofgroup *group_)
4867 struct group_dpif *group = group_dpif_cast(group_);
4872 group_construct_stats(struct group_dpif *group)
4873 OVS_REQUIRES(group->stats_mutex)
4875 group->packet_count = 0;
4876 group->byte_count = 0;
4877 if (!group->bucket_stats) {
4878 group->bucket_stats = xcalloc(group->up.n_buckets,
4879 sizeof *group->bucket_stats);
4881 memset(group->bucket_stats, 0, group->up.n_buckets *
4882 sizeof *group->bucket_stats);
4887 group_construct(struct ofgroup *group_)
4889 struct group_dpif *group = group_dpif_cast(group_);
4890 ovs_mutex_init(&group->stats_mutex);
4891 ovs_mutex_lock(&group->stats_mutex);
4892 group_construct_stats(group);
4893 ovs_mutex_unlock(&group->stats_mutex);
4898 group_destruct__(struct group_dpif *group)
4899 OVS_REQUIRES(group->stats_mutex)
4901 free(group->bucket_stats);
4902 group->bucket_stats = NULL;
4906 group_destruct(struct ofgroup *group_)
4908 struct group_dpif *group = group_dpif_cast(group_);
4909 ovs_mutex_lock(&group->stats_mutex);
4910 group_destruct__(group);
4911 ovs_mutex_unlock(&group->stats_mutex);
4912 ovs_mutex_destroy(&group->stats_mutex);
4916 group_modify(struct ofgroup *group_, struct ofgroup *victim_)
4918 struct group_dpif *group = group_dpif_cast(group_);
4919 struct group_dpif *victim = group_dpif_cast(victim_);
4921 ovs_mutex_lock(&group->stats_mutex);
4922 if (victim->up.n_buckets < group->up.n_buckets) {
4923 group_destruct__(group);
4925 group_construct_stats(group);
4926 ovs_mutex_unlock(&group->stats_mutex);
4932 group_get_stats(const struct ofgroup *group_, struct ofputil_group_stats *ogs)
4934 struct group_dpif *group = group_dpif_cast(group_);
4936 /* Start from historical data for 'group' itself that are no longer tracked
4937 * in facets. This counts, for example, facets that have expired. */
4938 ovs_mutex_lock(&group->stats_mutex);
4939 ogs->packet_count = group->packet_count;
4940 ogs->byte_count = group->byte_count;
4941 memcpy(ogs->bucket_stats, group->bucket_stats,
4942 group->up.n_buckets * sizeof *group->bucket_stats);
4943 ovs_mutex_unlock(&group->stats_mutex);
4949 group_dpif_lookup(struct ofproto_dpif *ofproto, uint32_t group_id,
4950 struct group_dpif **group)
4951 OVS_TRY_RDLOCK(true, (*group)->up.rwlock)
4953 struct ofgroup *ofgroup;
4957 found = ofproto_group_lookup(&ofproto->up, group_id, &ofgroup);
4958 *group = found ? group_dpif_cast(ofgroup) : NULL;
4964 group_dpif_release(struct group_dpif *group)
4965 OVS_RELEASES(group->up.rwlock)
4967 ofproto_group_release(&group->up);
4971 group_dpif_get_buckets(const struct group_dpif *group,
4972 const struct list **buckets)
4974 *buckets = &group->up.buckets;
4977 enum ofp11_group_type
4978 group_dpif_get_type(const struct group_dpif *group)
4980 return group->up.type;
4983 /* Sends 'packet' out 'ofport'.
4984 * May modify 'packet'.
4985 * Returns 0 if successful, otherwise a positive errno value. */
4987 ofproto_dpif_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4989 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4992 error = xlate_send_packet(ofport, packet);
4994 ovs_mutex_lock(&ofproto->stats_mutex);
4995 ofproto->stats.tx_packets++;
4996 ofproto->stats.tx_bytes += packet->size;
4997 ovs_mutex_unlock(&ofproto->stats_mutex);
5001 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5002 * The action will state 'slow' as the reason that the action is in the slow
5003 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5004 * dump-flows" output to see why a flow is in the slow path.)
5006 * The 'stub_size' bytes in 'stub' will be used to store the action.
5007 * 'stub_size' must be large enough for the action.
5009 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5012 compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
5013 enum slow_path_reason slow,
5014 uint64_t *stub, size_t stub_size,
5015 const struct nlattr **actionsp, size_t *actions_lenp)
5017 union user_action_cookie cookie;
5020 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
5021 cookie.slow_path.unused = 0;
5022 cookie.slow_path.reason = slow;
5024 ofpbuf_use_stack(&buf, stub, stub_size);
5025 if (slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP | SLOW_STP)) {
5026 uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif,
5028 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5030 odp_port_t odp_port;
5033 odp_port = ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port);
5034 pid = dpif_port_get_pid(ofproto->backer->dpif, odp_port);
5035 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5037 *actionsp = buf.data;
5038 *actions_lenp = buf.size;
5042 set_frag_handling(struct ofproto *ofproto_,
5043 enum ofp_config_flags frag_handling)
5045 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5046 if (frag_handling != OFPC_FRAG_REASM) {
5047 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5055 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5056 const struct flow *flow,
5057 const struct ofpact *ofpacts, size_t ofpacts_len)
5059 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5061 ofproto_dpif_execute_actions(ofproto, flow, NULL, ofpacts,
5062 ofpacts_len, packet);
5069 set_netflow(struct ofproto *ofproto_,
5070 const struct netflow_options *netflow_options)
5072 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5074 if (netflow_options) {
5075 if (!ofproto->netflow) {
5076 ofproto->netflow = netflow_create();
5077 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5079 return netflow_set_options(ofproto->netflow, netflow_options);
5080 } else if (ofproto->netflow) {
5081 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5082 netflow_destroy(ofproto->netflow);
5083 ofproto->netflow = NULL;
5090 get_netflow_ids(const struct ofproto *ofproto_,
5091 uint8_t *engine_type, uint8_t *engine_id)
5093 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5095 dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
5099 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5101 if (!facet_is_controller_flow(facet) &&
5102 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5103 struct subfacet *subfacet;
5104 struct ofexpired expired;
5106 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5107 if (subfacet->path == SF_FAST_PATH) {
5108 struct dpif_flow_stats stats;
5110 subfacet_install(subfacet, &facet->xout.odp_actions,
5112 subfacet_update_stats(subfacet, &stats);
5116 expired.flow = facet->flow;
5117 expired.packet_count = facet->packet_count;
5118 expired.byte_count = facet->byte_count;
5119 expired.used = facet->used;
5120 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5125 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5127 struct cls_cursor cursor;
5128 struct facet *facet;
5130 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5131 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5132 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5133 send_active_timeout(ofproto, facet);
5135 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5138 static struct ofproto_dpif *
5139 ofproto_dpif_lookup(const char *name)
5141 struct ofproto_dpif *ofproto;
5143 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5144 hash_string(name, 0), &all_ofproto_dpifs) {
5145 if (!strcmp(ofproto->up.name, name)) {
5153 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5154 const char *argv[], void *aux OVS_UNUSED)
5156 struct ofproto_dpif *ofproto;
5159 ofproto = ofproto_dpif_lookup(argv[1]);
5161 unixctl_command_reply_error(conn, "no such bridge");
5164 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5165 mac_learning_flush(ofproto->ml);
5166 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5168 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5169 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5170 mac_learning_flush(ofproto->ml);
5171 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5175 unixctl_command_reply(conn, "table successfully flushed");
5178 static struct ofport_dpif *
5179 ofbundle_get_a_port(const struct ofbundle *bundle)
5181 return CONTAINER_OF(list_front(&bundle->ports), struct ofport_dpif,
5186 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5187 const char *argv[], void *aux OVS_UNUSED)
5189 struct ds ds = DS_EMPTY_INITIALIZER;
5190 const struct ofproto_dpif *ofproto;
5191 const struct mac_entry *e;
5193 ofproto = ofproto_dpif_lookup(argv[1]);
5195 unixctl_command_reply_error(conn, "no such bridge");
5199 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5200 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
5201 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5202 struct ofbundle *bundle = e->port.p;
5203 char name[OFP_MAX_PORT_NAME_LEN];
5205 ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
5207 ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" %3d\n",
5208 name, e->vlan, ETH_ADDR_ARGS(e->mac),
5209 mac_entry_age(ofproto->ml, e));
5211 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5212 unixctl_command_reply(conn, ds_cstr(&ds));
5217 struct xlate_out xout;
5218 struct xlate_in xin;
5224 trace_format_rule(struct ds *result, int level, const struct rule_dpif *rule)
5226 struct rule_actions *actions;
5229 ds_put_char_multiple(result, '\t', level);
5231 ds_put_cstr(result, "No match\n");
5235 ovs_mutex_lock(&rule->up.mutex);
5236 cookie = rule->up.flow_cookie;
5237 ovs_mutex_unlock(&rule->up.mutex);
5239 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5240 rule ? rule->up.table_id : 0, ntohll(cookie));
5241 cls_rule_format(&rule->up.cr, result);
5242 ds_put_char(result, '\n');
5244 actions = rule_dpif_get_actions(rule);
5246 ds_put_char_multiple(result, '\t', level);
5247 ds_put_cstr(result, "OpenFlow actions=");
5248 ofpacts_format(actions->ofpacts, actions->ofpacts_len, result);
5249 ds_put_char(result, '\n');
5251 rule_actions_unref(actions);
5255 trace_format_flow(struct ds *result, int level, const char *title,
5256 struct trace_ctx *trace)
5258 ds_put_char_multiple(result, '\t', level);
5259 ds_put_format(result, "%s: ", title);
5260 if (flow_equal(&trace->xin.flow, &trace->flow)) {
5261 ds_put_cstr(result, "unchanged");
5263 flow_format(result, &trace->xin.flow);
5264 trace->flow = trace->xin.flow;
5266 ds_put_char(result, '\n');
5270 trace_format_regs(struct ds *result, int level, const char *title,
5271 struct trace_ctx *trace)
5275 ds_put_char_multiple(result, '\t', level);
5276 ds_put_format(result, "%s:", title);
5277 for (i = 0; i < FLOW_N_REGS; i++) {
5278 ds_put_format(result, " reg%"PRIuSIZE"=0x%"PRIx32, i, trace->flow.regs[i]);
5280 ds_put_char(result, '\n');
5284 trace_format_odp(struct ds *result, int level, const char *title,
5285 struct trace_ctx *trace)
5287 struct ofpbuf *odp_actions = &trace->xout.odp_actions;
5289 ds_put_char_multiple(result, '\t', level);
5290 ds_put_format(result, "%s: ", title);
5291 format_odp_actions(result, odp_actions->data, odp_actions->size);
5292 ds_put_char(result, '\n');
5296 trace_resubmit(struct xlate_in *xin, struct rule_dpif *rule, int recurse)
5298 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5299 struct ds *result = trace->result;
5301 ds_put_char(result, '\n');
5302 trace_format_flow(result, recurse + 1, "Resubmitted flow", trace);
5303 trace_format_regs(result, recurse + 1, "Resubmitted regs", trace);
5304 trace_format_odp(result, recurse + 1, "Resubmitted odp", trace);
5305 trace_format_rule(result, recurse + 1, rule);
5309 trace_report(struct xlate_in *xin, const char *s, int recurse)
5311 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5312 struct ds *result = trace->result;
5314 ds_put_char_multiple(result, '\t', recurse);
5315 ds_put_cstr(result, s);
5316 ds_put_char(result, '\n');
5319 /* Parses the 'argc' elements of 'argv', ignoring argv[0]. The following
5320 * forms are supported:
5322 * - [dpname] odp_flow [-generate | packet]
5323 * - bridge br_flow [-generate | packet]
5325 * On success, initializes '*ofprotop' and 'flow' and returns NULL. On failure
5326 * returns a nonnull error message. */
5328 parse_flow_and_packet(int argc, const char *argv[],
5329 struct ofproto_dpif **ofprotop, struct flow *flow,
5330 struct ofpbuf **packetp)
5332 const struct dpif_backer *backer = NULL;
5333 const char *error = NULL;
5334 struct simap port_names = SIMAP_INITIALIZER(&port_names);
5335 struct ofpbuf *packet;
5336 struct ofpbuf odp_key;
5337 struct ofpbuf odp_mask;
5339 ofpbuf_init(&odp_key, 0);
5340 ofpbuf_init(&odp_mask, 0);
5342 /* Handle "-generate" or a hex string as the last argument. */
5343 if (!strcmp(argv[argc - 1], "-generate")) {
5344 packet = ofpbuf_new(0);
5347 error = eth_from_hex(argv[argc - 1], &packet);
5350 } else if (argc == 4) {
5351 /* The 3-argument form must end in "-generate' or a hex string. */
5356 /* odp_flow can have its in_port specified as a name instead of port no.
5357 * We do not yet know whether a given flow is a odp_flow or a br_flow.
5358 * But, to know whether a flow is odp_flow through odp_flow_from_string(),
5359 * we need to create a simap of name to port no. */
5361 const char *dp_type;
5362 if (!strncmp(argv[1], "ovs-", 4)) {
5363 dp_type = argv[1] + 4;
5367 backer = shash_find_data(&all_dpif_backers, dp_type);
5368 } else if (argc == 2) {
5369 struct shash_node *node;
5370 if (shash_count(&all_dpif_backers) == 1) {
5371 node = shash_first(&all_dpif_backers);
5372 backer = node->data;
5375 error = "Syntax error";
5378 if (backer && backer->dpif) {
5379 struct dpif_port dpif_port;
5380 struct dpif_port_dump port_dump;
5381 DPIF_PORT_FOR_EACH (&dpif_port, &port_dump, backer->dpif) {
5382 simap_put(&port_names, dpif_port.name,
5383 odp_to_u32(dpif_port.port_no));
5387 /* Parse the flow and determine whether a datapath or
5388 * bridge is specified. If function odp_flow_key_from_string()
5389 * returns 0, the flow is a odp_flow. If function
5390 * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
5391 if (!odp_flow_from_string(argv[argc - 1], &port_names,
5392 &odp_key, &odp_mask)) {
5394 error = "Cannot find the datapath";
5398 if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, flow,
5399 NULL, ofprotop, NULL)) {
5400 error = "Invalid datapath flow";
5403 } else if (!parse_ofp_exact_flow(flow, NULL, argv[argc - 1], NULL)) {
5405 error = "Must specify bridge name";
5409 *ofprotop = ofproto_dpif_lookup(argv[1]);
5411 error = "Unknown bridge name";
5415 error = "Bad flow syntax";
5419 /* Generate a packet, if requested. */
5421 if (!packet->size) {
5422 flow_compose(packet, flow);
5424 union flow_in_port in_port = flow->in_port;
5426 /* Use the metadata from the flow and the packet argument
5427 * to reconstruct the flow. */
5428 flow_extract(packet, flow->skb_priority, flow->pkt_mark, NULL,
5437 ofpbuf_delete(packet);
5441 ofpbuf_uninit(&odp_key);
5442 ofpbuf_uninit(&odp_mask);
5443 simap_destroy(&port_names);
5448 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5449 void *aux OVS_UNUSED)
5451 struct ofproto_dpif *ofproto;
5452 struct ofpbuf *packet;
5456 error = parse_flow_and_packet(argc, argv, &ofproto, &flow, &packet);
5461 ofproto_trace(ofproto, &flow, packet, NULL, 0, &result);
5462 unixctl_command_reply(conn, ds_cstr(&result));
5463 ds_destroy(&result);
5464 ofpbuf_delete(packet);
5466 unixctl_command_reply_error(conn, error);
5471 ofproto_unixctl_trace_actions(struct unixctl_conn *conn, int argc,
5472 const char *argv[], void *aux OVS_UNUSED)
5474 enum ofputil_protocol usable_protocols;
5475 struct ofproto_dpif *ofproto;
5476 bool enforce_consistency;
5477 struct ofpbuf ofpacts;
5478 struct ofpbuf *packet;
5483 /* Three kinds of error return values! */
5490 ofpbuf_init(&ofpacts, 0);
5492 /* Parse actions. */
5493 rw_error = parse_ofpacts(argv[--argc], &ofpacts, &usable_protocols);
5495 unixctl_command_reply_error(conn, rw_error);
5500 /* OpenFlow 1.1 and later suggest that the switch enforces certain forms of
5501 * consistency between the flow and the actions. With -consistent, we
5502 * enforce consistency even for a flow supported in OpenFlow 1.0. */
5503 if (!strcmp(argv[1], "-consistent")) {
5504 enforce_consistency = true;
5508 enforce_consistency = false;
5511 error = parse_flow_and_packet(argc, argv, &ofproto, &flow, &packet);
5513 unixctl_command_reply_error(conn, error);
5517 /* Do the same checks as handle_packet_out() in ofproto.c.
5519 * We pass a 'table_id' of 0 to ofproto_check_ofpacts(), which isn't
5520 * strictly correct because these actions aren't in any table, but it's OK
5521 * because it 'table_id' is used only to check goto_table instructions, but
5522 * packet-outs take a list of actions and therefore it can't include
5525 * We skip the "meter" check here because meter is an instruction, not an
5526 * action, and thus cannot appear in ofpacts. */
5527 in_port = ofp_to_u16(flow.in_port.ofp_port);
5528 if (in_port >= ofproto->up.max_ports && in_port < ofp_to_u16(OFPP_MAX)) {
5529 unixctl_command_reply_error(conn, "invalid in_port");
5532 if (enforce_consistency) {
5533 retval = ofpacts_check_consistency(ofpacts.data, ofpacts.size, &flow,
5534 u16_to_ofp(ofproto->up.max_ports),
5535 0, 0, usable_protocols);
5537 retval = ofpacts_check(ofpacts.data, ofpacts.size, &flow,
5538 u16_to_ofp(ofproto->up.max_ports), 0, 0,
5544 ds_put_format(&result, "Bad actions: %s", ofperr_to_string(retval));
5545 unixctl_command_reply_error(conn, ds_cstr(&result));
5549 ofproto_trace(ofproto, &flow, packet, ofpacts.data, ofpacts.size, &result);
5550 unixctl_command_reply(conn, ds_cstr(&result));
5553 ds_destroy(&result);
5554 ofpbuf_delete(packet);
5555 ofpbuf_uninit(&ofpacts);
5558 /* Implements a "trace" through 'ofproto''s flow table, appending a textual
5559 * description of the results to 'ds'.
5561 * The trace follows a packet with the specified 'flow' through the flow
5562 * table. 'packet' may be nonnull to trace an actual packet, with consequent
5563 * side effects (if it is nonnull then its flow must be 'flow').
5565 * If 'ofpacts' is nonnull then its 'ofpacts_len' bytes specify the actions to
5566 * trace, otherwise the actions are determined by a flow table lookup. */
5568 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
5569 const struct ofpbuf *packet,
5570 const struct ofpact ofpacts[], size_t ofpacts_len,
5573 struct rule_dpif *rule;
5574 struct flow_wildcards wc;
5576 ds_put_format(ds, "Bridge: %s\n", ofproto->up.name);
5577 ds_put_cstr(ds, "Flow: ");
5578 flow_format(ds, flow);
5579 ds_put_char(ds, '\n');
5581 flow_wildcards_init_catchall(&wc);
5585 rule_dpif_lookup(ofproto, flow, &wc, &rule);
5587 trace_format_rule(ds, 0, rule);
5588 if (rule == ofproto->miss_rule) {
5589 ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
5590 } else if (rule == ofproto->no_packet_in_rule) {
5591 ds_put_cstr(ds, "\nNo match, packets dropped because "
5592 "OFPPC_NO_PACKET_IN is set on in_port.\n");
5593 } else if (rule == ofproto->drop_frags_rule) {
5594 ds_put_cstr(ds, "\nPackets dropped because they are IP fragments "
5595 "and the fragment handling mode is \"drop\".\n");
5599 if (rule || ofpacts) {
5600 uint64_t odp_actions_stub[1024 / 8];
5601 struct ofpbuf odp_actions;
5602 struct trace_ctx trace;
5606 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
5609 ofpbuf_use_stub(&odp_actions,
5610 odp_actions_stub, sizeof odp_actions_stub);
5611 xlate_in_init(&trace.xin, ofproto, flow, rule, tcp_flags, packet);
5613 trace.xin.ofpacts = ofpacts;
5614 trace.xin.ofpacts_len = ofpacts_len;
5616 trace.xin.resubmit_hook = trace_resubmit;
5617 trace.xin.report_hook = trace_report;
5619 xlate_actions(&trace.xin, &trace.xout);
5620 flow_wildcards_or(&trace.xout.wc, &trace.xout.wc, &wc);
5622 ds_put_char(ds, '\n');
5623 trace_format_flow(ds, 0, "Final flow", &trace);
5625 match_init(&match, flow, &trace.xout.wc);
5626 ds_put_cstr(ds, "Relevant fields: ");
5627 match_format(&match, ds, OFP_DEFAULT_PRIORITY);
5628 ds_put_char(ds, '\n');
5630 ds_put_cstr(ds, "Datapath actions: ");
5631 format_odp_actions(ds, trace.xout.odp_actions.data,
5632 trace.xout.odp_actions.size);
5634 if (trace.xout.slow) {
5635 enum slow_path_reason slow;
5637 ds_put_cstr(ds, "\nThis flow is handled by the userspace "
5638 "slow path because it:");
5640 slow = trace.xout.slow;
5642 enum slow_path_reason bit = rightmost_1bit(slow);
5644 ds_put_format(ds, "\n\t- %s.",
5645 slow_path_reason_to_explanation(bit));
5651 xlate_out_uninit(&trace.xout);
5654 rule_dpif_unref(rule);
5657 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
5658 * 'reply' describing the results. */
5660 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
5662 struct cls_cursor cursor;
5663 struct facet *facet;
5667 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5668 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5669 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5670 if (!facet_check_consistency(facet)) {
5674 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5676 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
5680 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
5681 ofproto->up.name, errors);
5683 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
5688 ofproto_dpif_self_check(struct unixctl_conn *conn,
5689 int argc, const char *argv[], void *aux OVS_UNUSED)
5691 struct ds reply = DS_EMPTY_INITIALIZER;
5692 struct ofproto_dpif *ofproto;
5695 ofproto = ofproto_dpif_lookup(argv[1]);
5697 unixctl_command_reply_error(conn, "Unknown ofproto (use "
5698 "ofproto/list for help)");
5701 ofproto_dpif_self_check__(ofproto, &reply);
5703 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5704 ofproto_dpif_self_check__(ofproto, &reply);
5708 unixctl_command_reply(conn, ds_cstr(&reply));
5712 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
5713 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
5714 * to destroy 'ofproto_shash' and free the returned value. */
5715 static const struct shash_node **
5716 get_ofprotos(struct shash *ofproto_shash)
5718 const struct ofproto_dpif *ofproto;
5720 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5721 char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
5722 shash_add_nocopy(ofproto_shash, name, ofproto);
5725 return shash_sort(ofproto_shash);
5729 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
5730 const char *argv[] OVS_UNUSED,
5731 void *aux OVS_UNUSED)
5733 struct ds ds = DS_EMPTY_INITIALIZER;
5734 struct shash ofproto_shash;
5735 const struct shash_node **sorted_ofprotos;
5738 shash_init(&ofproto_shash);
5739 sorted_ofprotos = get_ofprotos(&ofproto_shash);
5740 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5741 const struct shash_node *node = sorted_ofprotos[i];
5742 ds_put_format(&ds, "%s\n", node->name);
5745 shash_destroy(&ofproto_shash);
5746 free(sorted_ofprotos);
5748 unixctl_command_reply(conn, ds_cstr(&ds));
5753 dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
5755 const struct shash_node **ofprotos;
5756 struct ofproto_dpif *ofproto;
5757 struct shash ofproto_shash;
5758 uint64_t n_hit, n_missed;
5761 n_hit = n_missed = 0;
5762 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5763 if (ofproto->backer == backer) {
5764 n_missed += ofproto->n_missed;
5765 n_hit += ofproto->n_hit;
5769 ds_put_format(ds, "%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5770 dpif_name(backer->dpif), n_hit, n_missed);
5771 ds_put_format(ds, "\tflows: cur: %"PRIuSIZE", avg: %u, max: %u,"
5772 " life span: %lldms\n", hmap_count(&backer->subfacets),
5773 backer->avg_n_subfacet, backer->max_n_subfacet,
5774 backer->avg_subfacet_life);
5776 shash_init(&ofproto_shash);
5777 ofprotos = get_ofprotos(&ofproto_shash);
5778 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5779 struct ofproto_dpif *ofproto = ofprotos[i]->data;
5780 const struct shash_node **ports;
5783 if (ofproto->backer != backer) {
5787 ds_put_format(ds, "\t%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5788 ofproto->up.name, ofproto->n_hit, ofproto->n_missed);
5790 ports = shash_sort(&ofproto->up.port_by_name);
5791 for (j = 0; j < shash_count(&ofproto->up.port_by_name); j++) {
5792 const struct shash_node *node = ports[j];
5793 struct ofport *ofport = node->data;
5795 odp_port_t odp_port;
5797 ds_put_format(ds, "\t\t%s %u/", netdev_get_name(ofport->netdev),
5800 odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
5801 if (odp_port != ODPP_NONE) {
5802 ds_put_format(ds, "%"PRIu32":", odp_port);
5804 ds_put_cstr(ds, "none:");
5807 ds_put_format(ds, " (%s", netdev_get_type(ofport->netdev));
5810 if (!netdev_get_config(ofport->netdev, &config)) {
5811 const struct smap_node **nodes;
5814 nodes = smap_sort(&config);
5815 for (i = 0; i < smap_count(&config); i++) {
5816 const struct smap_node *node = nodes[i];
5817 ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
5818 node->key, node->value);
5822 smap_destroy(&config);
5824 ds_put_char(ds, ')');
5825 ds_put_char(ds, '\n');
5829 shash_destroy(&ofproto_shash);
5834 ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5835 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5837 struct ds ds = DS_EMPTY_INITIALIZER;
5838 const struct shash_node **backers;
5841 backers = shash_sort(&all_dpif_backers);
5842 for (i = 0; i < shash_count(&all_dpif_backers); i++) {
5843 dpif_show_backer(backers[i]->data, &ds);
5847 unixctl_command_reply(conn, ds_cstr(&ds));
5851 /* Dump the megaflow (facet) cache. This is useful to check the
5852 * correctness of flow wildcarding, since the same mechanism is used for
5853 * both xlate caching and kernel wildcarding.
5855 * It's important to note that in the output the flow description uses
5856 * OpenFlow (OFP) ports, but the actions use datapath (ODP) ports.
5858 * This command is only needed for advanced debugging, so it's not
5859 * documented in the man page. */
5861 ofproto_unixctl_dpif_dump_megaflows(struct unixctl_conn *conn,
5862 int argc OVS_UNUSED, const char *argv[],
5863 void *aux OVS_UNUSED)
5865 struct ds ds = DS_EMPTY_INITIALIZER;
5866 const struct ofproto_dpif *ofproto;
5867 long long int now = time_msec();
5868 struct cls_cursor cursor;
5869 struct facet *facet;
5871 ofproto = ofproto_dpif_lookup(argv[1]);
5873 unixctl_command_reply_error(conn, "no such bridge");
5877 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5878 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5879 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5880 cls_rule_format(&facet->cr, &ds);
5881 ds_put_cstr(&ds, ", ");
5882 ds_put_format(&ds, "n_subfacets:%"PRIuSIZE", ", list_size(&facet->subfacets));
5883 ds_put_format(&ds, "used:%.3fs, ", (now - facet->used) / 1000.0);
5884 ds_put_cstr(&ds, "Datapath actions: ");
5885 if (facet->xout.slow) {
5886 uint64_t slow_path_stub[128 / 8];
5887 const struct nlattr *actions;
5890 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
5891 slow_path_stub, sizeof slow_path_stub,
5892 &actions, &actions_len);
5893 format_odp_actions(&ds, actions, actions_len);
5895 format_odp_actions(&ds, facet->xout.odp_actions.data,
5896 facet->xout.odp_actions.size);
5898 ds_put_cstr(&ds, "\n");
5900 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5902 ds_chomp(&ds, '\n');
5903 unixctl_command_reply(conn, ds_cstr(&ds));
5907 /* Disable using the megaflows.
5909 * This command is only needed for advanced debugging, so it's not
5910 * documented in the man page. */
5912 ofproto_unixctl_dpif_disable_megaflows(struct unixctl_conn *conn,
5913 int argc OVS_UNUSED,
5914 const char *argv[] OVS_UNUSED,
5915 void *aux OVS_UNUSED)
5917 struct ofproto_dpif *ofproto;
5919 enable_megaflows = false;
5921 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5922 flush(&ofproto->up);
5925 unixctl_command_reply(conn, "megaflows disabled");
5928 /* Re-enable using megaflows.
5930 * This command is only needed for advanced debugging, so it's not
5931 * documented in the man page. */
5933 ofproto_unixctl_dpif_enable_megaflows(struct unixctl_conn *conn,
5934 int argc OVS_UNUSED,
5935 const char *argv[] OVS_UNUSED,
5936 void *aux OVS_UNUSED)
5938 struct ofproto_dpif *ofproto;
5940 enable_megaflows = true;
5942 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5943 flush(&ofproto->up);
5946 unixctl_command_reply(conn, "megaflows enabled");
5950 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
5951 int argc OVS_UNUSED, const char *argv[],
5952 void *aux OVS_UNUSED)
5954 struct ds ds = DS_EMPTY_INITIALIZER;
5955 const struct ofproto_dpif *ofproto;
5956 struct subfacet *subfacet;
5958 ofproto = ofproto_dpif_lookup(argv[1]);
5960 unixctl_command_reply_error(conn, "no such bridge");
5964 update_stats(ofproto->backer);
5966 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->backer->subfacets) {
5967 struct facet *facet = subfacet->facet;
5968 struct odputil_keybuf maskbuf;
5971 if (facet->ofproto != ofproto) {
5975 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
5976 if (enable_megaflows) {
5977 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
5978 &facet->flow, UINT32_MAX);
5981 odp_flow_format(subfacet->key, subfacet->key_len,
5982 mask.data, mask.size, NULL, &ds, false);
5984 ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
5985 subfacet->dp_packet_count, subfacet->dp_byte_count);
5986 if (subfacet->used) {
5987 ds_put_format(&ds, "%.3fs",
5988 (time_msec() - subfacet->used) / 1000.0);
5990 ds_put_format(&ds, "never");
5992 if (subfacet->facet->tcp_flags) {
5993 ds_put_cstr(&ds, ", flags:");
5994 packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
5997 ds_put_cstr(&ds, ", actions:");
5998 if (facet->xout.slow) {
5999 uint64_t slow_path_stub[128 / 8];
6000 const struct nlattr *actions;
6003 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
6004 slow_path_stub, sizeof slow_path_stub,
6005 &actions, &actions_len);
6006 format_odp_actions(&ds, actions, actions_len);
6008 format_odp_actions(&ds, facet->xout.odp_actions.data,
6009 facet->xout.odp_actions.size);
6011 ds_put_char(&ds, '\n');
6014 unixctl_command_reply(conn, ds_cstr(&ds));
6019 ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
6020 int argc OVS_UNUSED, const char *argv[],
6021 void *aux OVS_UNUSED)
6023 struct ds ds = DS_EMPTY_INITIALIZER;
6024 struct ofproto_dpif *ofproto;
6026 ofproto = ofproto_dpif_lookup(argv[1]);
6028 unixctl_command_reply_error(conn, "no such bridge");
6032 flush(&ofproto->up);
6034 unixctl_command_reply(conn, ds_cstr(&ds));
6039 ofproto_dpif_unixctl_init(void)
6041 static bool registered;
6047 unixctl_command_register(
6049 "{[dp_name] odp_flow | bridge br_flow} [-generate|packet]",
6050 1, 3, ofproto_unixctl_trace, NULL);
6051 unixctl_command_register(
6052 "ofproto/trace-packet-out",
6053 "[-consistent] {[dp_name] odp_flow | bridge br_flow} [-generate|packet] actions",
6054 2, 6, ofproto_unixctl_trace_actions, NULL);
6055 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6056 ofproto_unixctl_fdb_flush, NULL);
6057 unixctl_command_register("fdb/show", "bridge", 1, 1,
6058 ofproto_unixctl_fdb_show, NULL);
6059 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6060 ofproto_dpif_self_check, NULL);
6061 unixctl_command_register("dpif/dump-dps", "", 0, 0,
6062 ofproto_unixctl_dpif_dump_dps, NULL);
6063 unixctl_command_register("dpif/show", "", 0, 0, ofproto_unixctl_dpif_show,
6065 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
6066 ofproto_unixctl_dpif_dump_flows, NULL);
6067 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
6068 ofproto_unixctl_dpif_del_flows, NULL);
6069 unixctl_command_register("dpif/dump-megaflows", "bridge", 1, 1,
6070 ofproto_unixctl_dpif_dump_megaflows, NULL);
6071 unixctl_command_register("dpif/disable-megaflows", "", 0, 0,
6072 ofproto_unixctl_dpif_disable_megaflows, NULL);
6073 unixctl_command_register("dpif/enable-megaflows", "", 0, 0,
6074 ofproto_unixctl_dpif_enable_megaflows, NULL);
6077 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6079 * This is deprecated. It is only for compatibility with broken device drivers
6080 * in old versions of Linux that do not properly support VLANs when VLAN
6081 * devices are not used. When broken device drivers are no longer in
6082 * widespread use, we will delete these interfaces. */
6085 set_realdev(struct ofport *ofport_, ofp_port_t realdev_ofp_port, int vid)
6087 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6088 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6090 if (realdev_ofp_port == ofport->realdev_ofp_port
6091 && vid == ofport->vlandev_vid) {
6095 ofproto->backer->need_revalidate = REV_RECONFIGURE;
6097 if (ofport->realdev_ofp_port) {
6100 if (realdev_ofp_port && ofport->bundle) {
6101 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6102 * themselves be part of a bundle. */
6103 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6106 ofport->realdev_ofp_port = realdev_ofp_port;
6107 ofport->vlandev_vid = vid;
6109 if (realdev_ofp_port) {
6110 vsp_add(ofport, realdev_ofp_port, vid);
6117 hash_realdev_vid(ofp_port_t realdev_ofp_port, int vid)
6119 return hash_2words(ofp_to_u16(realdev_ofp_port), vid);
6123 ofproto_has_vlan_splinters(const struct ofproto_dpif *ofproto)
6124 OVS_EXCLUDED(ofproto->vsp_mutex)
6128 ovs_mutex_lock(&ofproto->vsp_mutex);
6129 ret = !hmap_is_empty(&ofproto->realdev_vid_map);
6130 ovs_mutex_unlock(&ofproto->vsp_mutex);
6135 vsp_realdev_to_vlandev__(const struct ofproto_dpif *ofproto,
6136 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6137 OVS_REQUIRES(ofproto->vsp_mutex)
6139 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6140 int vid = vlan_tci_to_vid(vlan_tci);
6141 const struct vlan_splinter *vsp;
6143 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6144 hash_realdev_vid(realdev_ofp_port, vid),
6145 &ofproto->realdev_vid_map) {
6146 if (vsp->realdev_ofp_port == realdev_ofp_port
6147 && vsp->vid == vid) {
6148 return vsp->vlandev_ofp_port;
6152 return realdev_ofp_port;
6155 /* Returns the OFP port number of the Linux VLAN device that corresponds to
6156 * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
6157 * 'struct ofport_dpif'. For example, given 'realdev_ofp_port' of eth0 and
6158 * 'vlan_tci' 9, it would return the port number of eth0.9.
6160 * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
6161 * function just returns its 'realdev_ofp_port' argument. */
6163 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6164 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6165 OVS_EXCLUDED(ofproto->vsp_mutex)
6169 ovs_mutex_lock(&ofproto->vsp_mutex);
6170 ret = vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, vlan_tci);
6171 ovs_mutex_unlock(&ofproto->vsp_mutex);
6175 static struct vlan_splinter *
6176 vlandev_find(const struct ofproto_dpif *ofproto, ofp_port_t vlandev_ofp_port)
6178 struct vlan_splinter *vsp;
6180 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node,
6181 hash_ofp_port(vlandev_ofp_port),
6182 &ofproto->vlandev_map) {
6183 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6191 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6192 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6193 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6194 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6195 * eth0 and store 9 in '*vid'.
6197 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6198 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6201 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6202 ofp_port_t vlandev_ofp_port, int *vid)
6203 OVS_REQUIRES(ofproto->vsp_mutex)
6205 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6206 const struct vlan_splinter *vsp;
6208 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6213 return vsp->realdev_ofp_port;
6219 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
6220 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
6221 * 'flow->in_port' to the "real" device backing the VLAN device, sets
6222 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
6223 * always the case unless VLAN splinters are enabled), returns false without
6224 * making any changes. */
6226 vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
6227 OVS_EXCLUDED(ofproto->vsp_mutex)
6232 ovs_mutex_lock(&ofproto->vsp_mutex);
6233 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port.ofp_port, &vid);
6234 ovs_mutex_unlock(&ofproto->vsp_mutex);
6239 /* Cause the flow to be processed as if it came in on the real device with
6240 * the VLAN device's VLAN ID. */
6241 flow->in_port.ofp_port = realdev;
6242 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
6247 vsp_remove(struct ofport_dpif *port)
6249 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6250 struct vlan_splinter *vsp;
6252 ovs_mutex_lock(&ofproto->vsp_mutex);
6253 vsp = vlandev_find(ofproto, port->up.ofp_port);
6255 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6256 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6259 port->realdev_ofp_port = 0;
6261 VLOG_ERR("missing vlan device record");
6263 ovs_mutex_unlock(&ofproto->vsp_mutex);
6267 vsp_add(struct ofport_dpif *port, ofp_port_t realdev_ofp_port, int vid)
6269 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6271 ovs_mutex_lock(&ofproto->vsp_mutex);
6272 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6273 && (vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, htons(vid))
6274 == realdev_ofp_port)) {
6275 struct vlan_splinter *vsp;
6277 vsp = xmalloc(sizeof *vsp);
6278 vsp->realdev_ofp_port = realdev_ofp_port;
6279 vsp->vlandev_ofp_port = port->up.ofp_port;
6282 port->realdev_ofp_port = realdev_ofp_port;
6284 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6285 hash_ofp_port(port->up.ofp_port));
6286 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6287 hash_realdev_vid(realdev_ofp_port, vid));
6289 VLOG_ERR("duplicate vlan device record");
6291 ovs_mutex_unlock(&ofproto->vsp_mutex);
6295 ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
6297 const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
6298 return ofport ? ofport->odp_port : ODPP_NONE;
6301 struct ofport_dpif *
6302 odp_port_to_ofport(const struct dpif_backer *backer, odp_port_t odp_port)
6304 struct ofport_dpif *port;
6306 ovs_rwlock_rdlock(&backer->odp_to_ofport_lock);
6307 HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node, hash_odp_port(odp_port),
6308 &backer->odp_to_ofport_map) {
6309 if (port->odp_port == odp_port) {
6310 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6315 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6320 odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
6322 struct ofport_dpif *port;
6324 port = odp_port_to_ofport(ofproto->backer, odp_port);
6325 if (port && &ofproto->up == port->up.ofproto) {
6326 return port->up.ofp_port;
6332 const struct ofproto_class ofproto_dpif_class = {
6367 port_is_lacp_current,
6368 NULL, /* rule_choose_table */
6377 rule_modify_actions,
6391 get_stp_port_status,
6399 is_mirror_output_bundle,
6400 forward_bpdu_changed,
6401 set_mac_table_config,
6403 NULL, /* meter_get_features */
6404 NULL, /* meter_set */
6405 NULL, /* meter_get */
6406 NULL, /* meter_del */
6407 group_alloc, /* group_alloc */
6408 group_construct, /* group_construct */
6409 group_destruct, /* group_destruct */
6410 group_dealloc, /* group_dealloc */
6411 group_modify, /* group_modify */
6412 group_get_stats, /* group_get_stats */