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"
37 #include "mac-learning.h"
38 #include "meta-flow.h"
39 #include "multipath.h"
40 #include "netdev-vport.h"
45 #include "odp-execute.h"
48 #include "ofp-actions.h"
49 #include "ofp-parse.h"
50 #include "ofp-print.h"
51 #include "ofproto-dpif-governor.h"
52 #include "ofproto-dpif-ipfix.h"
53 #include "ofproto-dpif-mirror.h"
54 #include "ofproto-dpif-sflow.h"
55 #include "ofproto-dpif-upcall.h"
56 #include "ofproto-dpif-xlate.h"
57 #include "poll-loop.h"
62 #include "unaligned.h"
64 #include "vlan-bitmap.h"
67 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
69 COVERAGE_DEFINE(ofproto_dpif_expired);
70 COVERAGE_DEFINE(facet_changed_rule);
71 COVERAGE_DEFINE(facet_revalidate);
72 COVERAGE_DEFINE(facet_unexpected);
73 COVERAGE_DEFINE(facet_suppress);
74 COVERAGE_DEFINE(subfacet_install_fail);
75 COVERAGE_DEFINE(packet_in_overflow);
76 COVERAGE_DEFINE(flow_mod_overflow);
78 /* Number of implemented OpenFlow tables. */
79 enum { N_TABLES = 255 };
80 enum { TBL_INTERNAL = N_TABLES - 1 }; /* Used for internal hidden rules. */
81 BUILD_ASSERT_DECL(N_TABLES >= 2 && N_TABLES <= 255);
91 * - Do include packets and bytes from facets that have been deleted or
92 * whose own statistics have been folded into the rule.
94 * - Do include packets and bytes sent "by hand" that were accounted to
95 * the rule without any facet being involved (this is a rare corner
96 * case in rule_execute()).
98 * - Do not include packet or bytes that can be obtained from any facet's
99 * packet_count or byte_count member or that can be obtained from the
100 * datapath by, e.g., dpif_flow_get() for any subfacet.
102 struct ovs_mutex stats_mutex;
103 uint64_t packet_count OVS_GUARDED; /* Number of packets received. */
104 uint64_t byte_count OVS_GUARDED; /* Number of bytes received. */
107 static void rule_get_stats(struct rule *, uint64_t *packets, uint64_t *bytes);
108 static struct rule_dpif *rule_dpif_cast(const struct rule *);
111 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
112 struct ofproto_dpif *ofproto; /* Owning ofproto. */
113 void *aux; /* Key supplied by ofproto's client. */
114 char *name; /* Identifier for log messages. */
117 struct list ports; /* Contains "struct ofport"s. */
118 enum port_vlan_mode vlan_mode; /* VLAN mode */
119 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
120 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
121 * NULL if all VLANs are trunked. */
122 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
123 struct bond *bond; /* Nonnull iff more than one port. */
124 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
127 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
130 static void bundle_remove(struct ofport *);
131 static void bundle_update(struct ofbundle *);
132 static void bundle_destroy(struct ofbundle *);
133 static void bundle_del_port(struct ofport_dpif *);
134 static void bundle_run(struct ofbundle *);
135 static void bundle_wait(struct ofbundle *);
137 static void stp_run(struct ofproto_dpif *ofproto);
138 static void stp_wait(struct ofproto_dpif *ofproto);
139 static int set_stp_port(struct ofport *,
140 const struct ofproto_port_stp_settings *);
142 static void compose_slow_path(const struct ofproto_dpif *, const struct flow *,
143 enum slow_path_reason,
144 uint64_t *stub, size_t stub_size,
145 const struct nlattr **actionsp,
146 size_t *actions_lenp);
148 /* A subfacet (see "struct subfacet" below) has three possible installation
151 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
152 * case just after the subfacet is created, just before the subfacet is
153 * destroyed, or if the datapath returns an error when we try to install a
156 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
158 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
159 * ofproto_dpif is installed in the datapath.
162 SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */
163 SF_FAST_PATH, /* Full actions are installed. */
164 SF_SLOW_PATH, /* Send-to-userspace action is installed. */
167 /* A dpif flow and actions associated with a facet.
169 * See also the large comment on struct facet. */
172 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
173 struct list list_node; /* In struct facet's 'facets' list. */
174 struct facet *facet; /* Owning facet. */
175 struct dpif_backer *backer; /* Owning backer. */
177 enum odp_key_fitness key_fitness;
181 long long int used; /* Time last used; time created if not used. */
182 long long int created; /* Time created. */
184 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
185 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
187 enum subfacet_path path; /* Installed in datapath? */
190 #define SUBFACET_DESTROY_MAX_BATCH 50
192 static struct subfacet *subfacet_create(struct facet *, struct flow_miss *);
193 static struct subfacet *subfacet_find(struct dpif_backer *,
194 const struct nlattr *key, size_t key_len,
196 static void subfacet_destroy(struct subfacet *);
197 static void subfacet_destroy__(struct subfacet *);
198 static void subfacet_destroy_batch(struct dpif_backer *,
199 struct subfacet **, int n);
200 static void subfacet_reset_dp_stats(struct subfacet *,
201 struct dpif_flow_stats *);
202 static void subfacet_update_stats(struct subfacet *,
203 const struct dpif_flow_stats *);
204 static int subfacet_install(struct subfacet *,
205 const struct ofpbuf *odp_actions,
206 struct dpif_flow_stats *);
207 static void subfacet_uninstall(struct subfacet *);
209 /* A unique, non-overlapping instantiation of an OpenFlow flow.
211 * A facet associates a "struct flow", which represents the Open vSwitch
212 * userspace idea of an exact-match flow, with one or more subfacets.
213 * While the facet is created based on an exact-match flow, it is stored
214 * within the ofproto based on the wildcards that could be expressed
215 * based on the flow table and other configuration. (See the 'wc'
216 * description in "struct xlate_out" for more details.)
218 * Each subfacet tracks the datapath's idea of the flow equivalent to
219 * the facet. When the kernel module (or other dpif implementation) and
220 * Open vSwitch userspace agree on the definition of a flow key, there
221 * is exactly one subfacet per facet. If the dpif implementation
222 * supports more-specific flow matching than userspace, however, a facet
223 * can have more than one subfacet. Examples include the dpif
224 * implementation not supporting the same wildcards as userspace or some
225 * distinction in flow that userspace simply doesn't understand.
227 * Flow expiration works in terms of subfacets, so a facet must have at
228 * least one subfacet or it will never expire, leaking memory. */
231 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
232 struct ofproto_dpif *ofproto;
235 struct list subfacets;
236 long long int used; /* Time last used; time created if not used. */
239 struct flow flow; /* Flow of the creating subfacet. */
240 struct cls_rule cr; /* In 'ofproto_dpif's facets classifier. */
244 * - Do include packets and bytes sent "by hand", e.g. with
247 * - Do include packets and bytes that were obtained from the datapath
248 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
249 * DPIF_FP_ZERO_STATS).
251 * - Do not include packets or bytes that can be obtained from the
252 * datapath for any existing subfacet.
254 uint64_t packet_count; /* Number of packets received. */
255 uint64_t byte_count; /* Number of bytes received. */
257 /* Resubmit statistics. */
258 uint64_t prev_packet_count; /* Number of packets from last stats push. */
259 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
260 long long int prev_used; /* Used time from last stats push. */
263 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
264 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
265 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
267 struct xlate_out xout;
269 /* Storage for a single subfacet, to reduce malloc() time and space
270 * overhead. (A facet always has at least one subfacet and in the common
271 * case has exactly one subfacet. However, 'one_subfacet' may not
272 * always be valid, since it could have been removed after newer
273 * subfacets were pushed onto the 'subfacets' list.) */
274 struct subfacet one_subfacet;
276 long long int learn_rl; /* Rate limiter for facet_learn(). */
279 static struct facet *facet_create(const struct flow_miss *);
280 static void facet_remove(struct facet *);
281 static void facet_free(struct facet *);
283 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
284 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
285 const struct flow *);
286 static bool facet_revalidate(struct facet *);
287 static bool facet_check_consistency(struct facet *);
289 static void facet_flush_stats(struct facet *);
291 static void facet_reset_counters(struct facet *);
292 static void flow_push_stats(struct ofproto_dpif *, struct flow *,
293 struct dpif_flow_stats *, bool may_learn);
294 static void facet_push_stats(struct facet *, bool may_learn);
295 static void facet_learn(struct facet *);
296 static void facet_account(struct facet *);
297 static void push_all_stats(void);
299 static bool facet_is_controller_flow(struct facet *);
302 struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
306 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
307 struct list bundle_node; /* In struct ofbundle's "ports" list. */
308 struct cfm *cfm; /* Connectivity Fault Management, if any. */
309 struct bfd *bfd; /* BFD, if any. */
310 bool may_enable; /* May be enabled in bonds. */
311 bool is_tunnel; /* This port is a tunnel. */
312 long long int carrier_seq; /* Carrier status changes. */
313 struct ofport_dpif *peer; /* Peer if patch port. */
316 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
317 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
318 long long int stp_state_entered;
320 /* Queue to DSCP mapping. */
321 struct ofproto_port_queue *qdscp;
324 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
326 * This is deprecated. It is only for compatibility with broken device
327 * drivers in old versions of Linux that do not properly support VLANs when
328 * VLAN devices are not used. When broken device drivers are no longer in
329 * widespread use, we will delete these interfaces. */
330 ofp_port_t realdev_ofp_port;
334 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
336 * This is deprecated. It is only for compatibility with broken device drivers
337 * in old versions of Linux that do not properly support VLANs when VLAN
338 * devices are not used. When broken device drivers are no longer in
339 * widespread use, we will delete these interfaces. */
340 struct vlan_splinter {
341 struct hmap_node realdev_vid_node;
342 struct hmap_node vlandev_node;
343 ofp_port_t realdev_ofp_port;
344 ofp_port_t vlandev_ofp_port;
348 static void vsp_remove(struct ofport_dpif *);
349 static void vsp_add(struct ofport_dpif *, ofp_port_t realdev_ofp_port, int vid);
351 static odp_port_t ofp_port_to_odp_port(const struct ofproto_dpif *,
354 static ofp_port_t odp_port_to_ofp_port(const struct ofproto_dpif *,
357 static struct ofport_dpif *
358 ofport_dpif_cast(const struct ofport *ofport)
360 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
363 static void port_run(struct ofport_dpif *);
364 static void port_run_fast(struct ofport_dpif *);
365 static void port_wait(struct ofport_dpif *);
366 static int set_bfd(struct ofport *, const struct smap *);
367 static int set_cfm(struct ofport *, const struct cfm_settings *);
368 static void ofport_update_peer(struct ofport_dpif *);
369 static void run_fast_rl(void);
370 static int run_fast(struct ofproto *);
372 struct dpif_completion {
373 struct list list_node;
374 struct ofoperation *op;
377 /* Reasons that we might need to revalidate every facet, and corresponding
380 * A value of 0 means that there is no need to revalidate.
382 * It would be nice to have some cleaner way to integrate with coverage
383 * counters, but with only a few reasons I guess this is good enough for
385 enum revalidate_reason {
386 REV_RECONFIGURE = 1, /* Switch configuration changed. */
387 REV_STP, /* Spanning tree protocol port status change. */
388 REV_BOND, /* Bonding changed. */
389 REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
390 REV_FLOW_TABLE, /* Flow table changed. */
391 REV_MAC_LEARNING, /* Mac learning changed. */
392 REV_INCONSISTENCY /* Facet self-check failed. */
394 COVERAGE_DEFINE(rev_reconfigure);
395 COVERAGE_DEFINE(rev_stp);
396 COVERAGE_DEFINE(rev_bond);
397 COVERAGE_DEFINE(rev_port_toggled);
398 COVERAGE_DEFINE(rev_flow_table);
399 COVERAGE_DEFINE(rev_mac_learning);
400 COVERAGE_DEFINE(rev_inconsistency);
402 struct avg_subfacet_rates {
403 double add_rate; /* Moving average of new flows created per minute. */
404 double del_rate; /* Moving average of flows deleted per minute. */
407 /* All datapaths of a given type share a single dpif backer instance. */
413 struct timer next_expiration;
415 struct ovs_rwlock odp_to_ofport_lock;
416 struct hmap odp_to_ofport_map OVS_GUARDED; /* ODP port to ofport map. */
418 struct simap tnl_backers; /* Set of dpif ports backing tunnels. */
420 /* Facet revalidation flags applying to facets which use this backer. */
421 enum revalidate_reason need_revalidate; /* Revalidate every facet. */
423 struct hmap drop_keys; /* Set of dropped odp keys. */
424 bool recv_set_enable; /* Enables or disables receiving packets. */
426 struct hmap subfacets;
427 struct governor *governor;
429 /* Subfacet statistics.
431 * These keep track of the total number of subfacets added and deleted and
432 * flow life span. They are useful for computing the flow rates stats
433 * exposed via "ovs-appctl dpif/show". The goal is to learn about
434 * traffic patterns in ways that we can use later to improve Open vSwitch
435 * performance in new situations. */
436 long long int created; /* Time when it is created. */
437 unsigned max_n_subfacet; /* Maximum number of flows */
438 unsigned avg_n_subfacet; /* Average number of flows. */
439 long long int avg_subfacet_life; /* Average life span of subfacets. */
441 /* The average number of subfacets... */
442 struct avg_subfacet_rates hourly; /* ...over the last hour. */
443 struct avg_subfacet_rates daily; /* ...over the last day. */
444 struct avg_subfacet_rates lifetime; /* ...over the switch lifetime. */
445 long long int last_minute; /* Last time 'hourly' was updated. */
447 /* Number of subfacets added or deleted since 'last_minute'. */
448 unsigned subfacet_add_count;
449 unsigned subfacet_del_count;
451 /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
452 unsigned long long int total_subfacet_add_count;
453 unsigned long long int total_subfacet_del_count;
455 /* Number of upcall handling threads. */
456 unsigned int n_handler_threads;
459 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
460 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
462 static void drop_key_clear(struct dpif_backer *);
463 static void update_moving_averages(struct dpif_backer *backer);
465 struct ofproto_dpif {
466 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
468 struct dpif_backer *backer;
470 /* Special OpenFlow rules. */
471 struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
472 struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
473 struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
476 struct netflow *netflow;
477 struct dpif_sflow *sflow;
478 struct dpif_ipfix *ipfix;
479 struct hmap bundles; /* Contains "struct ofbundle"s. */
480 struct mac_learning *ml;
481 bool has_bonded_bundles;
482 struct mbridge *mbridge;
485 struct classifier facets; /* Contains 'struct facet's. */
486 long long int consistency_rl;
488 /* Support for debugging async flow mods. */
489 struct list completions;
491 struct netdev_stats stats; /* To account packets generated and consumed in
496 long long int stp_last_tick;
498 /* VLAN splinters. */
499 struct ovs_mutex vsp_mutex;
500 struct hmap realdev_vid_map OVS_GUARDED; /* (realdev,vid) -> vlandev. */
501 struct hmap vlandev_map OVS_GUARDED; /* vlandev -> (realdev,vid). */
504 struct sset ports; /* Set of standard port names. */
505 struct sset ghost_ports; /* Ports with no datapath port. */
506 struct sset port_poll_set; /* Queued names for port_poll() reply. */
507 int port_poll_errno; /* Last errno for port_poll() reply. */
509 /* Per ofproto's dpif stats. */
514 struct ovs_mutex flow_mod_mutex;
515 struct list flow_mods OVS_GUARDED;
516 size_t n_flow_mods OVS_GUARDED;
518 struct ovs_mutex pin_mutex;
519 struct list pins OVS_GUARDED;
520 size_t n_pins OVS_GUARDED;
523 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
524 * for debugging the asynchronous flow_mod implementation.) */
527 /* By default, flows in the datapath are wildcarded (megaflows). They
528 * may be disabled with the "ovs-appctl dpif/disable-megaflows" command. */
529 static bool enable_megaflows = true;
531 /* All existing ofproto_dpif instances, indexed by ->up.name. */
532 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
534 static void ofproto_dpif_unixctl_init(void);
536 static inline struct ofproto_dpif *
537 ofproto_dpif_cast(const struct ofproto *ofproto)
539 ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
540 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
543 static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *ofproto,
544 ofp_port_t ofp_port);
545 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
546 const struct ofpbuf *packet, struct ds *);
549 static void handle_upcalls(struct dpif_backer *);
551 /* Flow expiration. */
552 static int expire(struct dpif_backer *);
555 static void send_netflow_active_timeouts(struct ofproto_dpif *);
558 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
560 /* Global variables. */
561 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
563 /* Initial mappings of port to bridge mappings. */
564 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
566 /* Executes and takes ownership of 'fm'. */
568 ofproto_dpif_flow_mod(struct ofproto_dpif *ofproto,
569 struct ofputil_flow_mod *fm)
571 ovs_mutex_lock(&ofproto->flow_mod_mutex);
572 if (ofproto->n_flow_mods > 1024) {
573 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
574 COVERAGE_INC(flow_mod_overflow);
580 list_push_back(&ofproto->flow_mods, &fm->list_node);
581 ofproto->n_flow_mods++;
582 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
585 /* Appends 'pin' to the queue of "packet ins" to be sent to the controller.
586 * Takes ownership of 'pin' and pin->packet. */
588 ofproto_dpif_send_packet_in(struct ofproto_dpif *ofproto,
589 struct ofputil_packet_in *pin)
591 ovs_mutex_lock(&ofproto->pin_mutex);
592 if (ofproto->n_pins > 1024) {
593 ovs_mutex_unlock(&ofproto->pin_mutex);
594 COVERAGE_INC(packet_in_overflow);
595 free(CONST_CAST(void *, pin->packet));
600 list_push_back(&ofproto->pins, &pin->list_node);
602 ovs_mutex_unlock(&ofproto->pin_mutex);
605 /* Factory functions. */
608 init(const struct shash *iface_hints)
610 struct shash_node *node;
612 /* Make a local copy, since we don't own 'iface_hints' elements. */
613 SHASH_FOR_EACH(node, iface_hints) {
614 const struct iface_hint *orig_hint = node->data;
615 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
617 new_hint->br_name = xstrdup(orig_hint->br_name);
618 new_hint->br_type = xstrdup(orig_hint->br_type);
619 new_hint->ofp_port = orig_hint->ofp_port;
621 shash_add(&init_ofp_ports, node->name, new_hint);
626 enumerate_types(struct sset *types)
628 dp_enumerate_types(types);
632 enumerate_names(const char *type, struct sset *names)
634 struct ofproto_dpif *ofproto;
637 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
638 if (strcmp(type, ofproto->up.type)) {
641 sset_add(names, ofproto->up.name);
648 del(const char *type, const char *name)
653 error = dpif_open(name, type, &dpif);
655 error = dpif_delete(dpif);
662 port_open_type(const char *datapath_type, const char *port_type)
664 return dpif_port_open_type(datapath_type, port_type);
667 /* Type functions. */
669 static void process_dpif_port_changes(struct dpif_backer *);
670 static void process_dpif_all_ports_changed(struct dpif_backer *);
671 static void process_dpif_port_change(struct dpif_backer *,
672 const char *devname);
673 static void process_dpif_port_error(struct dpif_backer *, int error);
675 static struct ofproto_dpif *
676 lookup_ofproto_dpif_by_port_name(const char *name)
678 struct ofproto_dpif *ofproto;
680 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
681 if (sset_contains(&ofproto->ports, name)) {
690 type_run(const char *type)
692 static long long int push_timer = LLONG_MIN;
693 struct dpif_backer *backer;
695 backer = shash_find_data(&all_dpif_backers, type);
697 /* This is not necessarily a problem, since backers are only
698 * created on demand. */
702 dpif_run(backer->dpif);
704 /* The most natural place to push facet statistics is when they're pulled
705 * from the datapath. However, when there are many flows in the datapath,
706 * this expensive operation can occur so frequently, that it reduces our
707 * ability to quickly set up flows. To reduce the cost, we push statistics
709 if (time_msec() > push_timer) {
710 push_timer = time_msec() + 2000;
714 /* If vswitchd started with other_config:flow_restore_wait set as "true",
715 * and the configuration has now changed to "false", enable receiving
716 * packets from the datapath. */
717 if (!backer->recv_set_enable && !ofproto_get_flow_restore_wait()) {
720 backer->recv_set_enable = true;
722 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
724 udpif_recv_set(backer->udpif, 0, false);
725 VLOG_ERR("Failed to enable receiving packets in dpif.");
728 udpif_recv_set(backer->udpif, n_handler_threads,
729 backer->recv_set_enable);
730 dpif_flow_flush(backer->dpif);
731 backer->need_revalidate = REV_RECONFIGURE;
734 /* If the n_handler_threads is reconfigured, call udpif_recv_set()
735 * to reset the handler threads. */
736 if (backer->n_handler_threads != n_handler_threads) {
737 udpif_recv_set(backer->udpif, n_handler_threads,
738 backer->recv_set_enable);
739 backer->n_handler_threads = n_handler_threads;
742 if (backer->need_revalidate) {
743 struct ofproto_dpif *ofproto;
744 struct simap_node *node;
745 struct simap tmp_backers;
747 /* Handle tunnel garbage collection. */
748 simap_init(&tmp_backers);
749 simap_swap(&backer->tnl_backers, &tmp_backers);
751 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
752 struct ofport_dpif *iter;
754 if (backer != ofproto->backer) {
758 HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
759 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
762 if (!iter->is_tunnel) {
766 dp_port = netdev_vport_get_dpif_port(iter->up.netdev,
767 namebuf, sizeof namebuf);
768 node = simap_find(&tmp_backers, dp_port);
770 simap_put(&backer->tnl_backers, dp_port, node->data);
771 simap_delete(&tmp_backers, node);
772 node = simap_find(&backer->tnl_backers, dp_port);
774 node = simap_find(&backer->tnl_backers, dp_port);
776 odp_port_t odp_port = ODPP_NONE;
778 if (!dpif_port_add(backer->dpif, iter->up.netdev,
780 simap_put(&backer->tnl_backers, dp_port,
781 odp_to_u32(odp_port));
782 node = simap_find(&backer->tnl_backers, dp_port);
787 iter->odp_port = node ? u32_to_odp(node->data) : ODPP_NONE;
788 if (tnl_port_reconfigure(iter, iter->up.netdev,
790 backer->need_revalidate = REV_RECONFIGURE;
795 SIMAP_FOR_EACH (node, &tmp_backers) {
796 dpif_port_del(backer->dpif, u32_to_odp(node->data));
798 simap_destroy(&tmp_backers);
800 switch (backer->need_revalidate) {
801 case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
802 case REV_STP: COVERAGE_INC(rev_stp); break;
803 case REV_BOND: COVERAGE_INC(rev_bond); break;
804 case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
805 case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
806 case REV_MAC_LEARNING: COVERAGE_INC(rev_mac_learning); break;
807 case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
809 backer->need_revalidate = 0;
811 /* Clear the drop_keys in case we should now be accepting some
812 * formerly dropped flows. */
813 drop_key_clear(backer);
815 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
816 struct facet *facet, *next;
817 struct ofport_dpif *ofport;
818 struct cls_cursor cursor;
819 struct ofbundle *bundle;
821 if (ofproto->backer != backer) {
825 ovs_rwlock_wrlock(&xlate_rwlock);
826 xlate_ofproto_set(ofproto, ofproto->up.name,
827 ofproto->backer->dpif, ofproto->miss_rule,
828 ofproto->no_packet_in_rule, ofproto->ml,
829 ofproto->stp, ofproto->mbridge,
830 ofproto->sflow, ofproto->ipfix,
831 ofproto->up.frag_handling,
832 ofproto->up.forward_bpdu,
833 connmgr_has_in_band(ofproto->up.connmgr),
834 ofproto->netflow != NULL);
836 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
837 xlate_bundle_set(ofproto, bundle, bundle->name,
838 bundle->vlan_mode, bundle->vlan,
839 bundle->trunks, bundle->use_priority_tags,
840 bundle->bond, bundle->lacp,
844 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
845 int stp_port = ofport->stp_port
846 ? stp_port_no(ofport->stp_port)
848 xlate_ofport_set(ofproto, ofport->bundle, ofport,
849 ofport->up.ofp_port, ofport->odp_port,
850 ofport->up.netdev, ofport->cfm,
851 ofport->bfd, ofport->peer, stp_port,
852 ofport->qdscp, ofport->n_qdscp,
853 ofport->up.pp.config, ofport->is_tunnel,
856 ovs_rwlock_unlock(&xlate_rwlock);
858 /* Only ofproto-dpif cares about the facet classifier so we just
859 * lock cls_cursor_init() to appease the thread safety analysis. */
860 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
861 cls_cursor_init(&cursor, &ofproto->facets, NULL);
862 ovs_rwlock_unlock(&ofproto->facets.rwlock);
863 CLS_CURSOR_FOR_EACH_SAFE (facet, next, cr, &cursor) {
864 facet_revalidate(facet);
869 udpif_revalidate(backer->udpif);
872 if (!backer->recv_set_enable) {
873 /* Wake up before a max of 1000ms. */
874 timer_set_duration(&backer->next_expiration, 1000);
875 } else if (timer_expired(&backer->next_expiration)) {
876 int delay = expire(backer);
877 timer_set_duration(&backer->next_expiration, delay);
880 process_dpif_port_changes(backer);
882 if (backer->governor) {
885 governor_run(backer->governor);
887 /* If the governor has shrunk to its minimum size and the number of
888 * subfacets has dwindled, then drop the governor entirely.
890 * For hysteresis, the number of subfacets to drop the governor is
891 * smaller than the number needed to trigger its creation. */
892 n_subfacets = hmap_count(&backer->subfacets);
893 if (n_subfacets * 4 < flow_eviction_threshold
894 && governor_is_idle(backer->governor)) {
895 governor_destroy(backer->governor);
896 backer->governor = NULL;
903 /* Check for and handle port changes in 'backer''s dpif. */
905 process_dpif_port_changes(struct dpif_backer *backer)
911 error = dpif_port_poll(backer->dpif, &devname);
917 process_dpif_all_ports_changed(backer);
921 process_dpif_port_change(backer, devname);
926 process_dpif_port_error(backer, error);
933 process_dpif_all_ports_changed(struct dpif_backer *backer)
935 struct ofproto_dpif *ofproto;
936 struct dpif_port dpif_port;
937 struct dpif_port_dump dump;
938 struct sset devnames;
941 sset_init(&devnames);
942 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
943 if (ofproto->backer == backer) {
944 struct ofport *ofport;
946 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
947 sset_add(&devnames, netdev_get_name(ofport->netdev));
951 DPIF_PORT_FOR_EACH (&dpif_port, &dump, backer->dpif) {
952 sset_add(&devnames, dpif_port.name);
955 SSET_FOR_EACH (devname, &devnames) {
956 process_dpif_port_change(backer, devname);
958 sset_destroy(&devnames);
962 process_dpif_port_change(struct dpif_backer *backer, const char *devname)
964 struct ofproto_dpif *ofproto;
965 struct dpif_port port;
967 /* Don't report on the datapath's device. */
968 if (!strcmp(devname, dpif_base_name(backer->dpif))) {
972 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
973 &all_ofproto_dpifs) {
974 if (simap_contains(&ofproto->backer->tnl_backers, devname)) {
979 ofproto = lookup_ofproto_dpif_by_port_name(devname);
980 if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
981 /* The port was removed. If we know the datapath,
982 * report it through poll_set(). If we don't, it may be
983 * notifying us of a removal we initiated, so ignore it.
984 * If there's a pending ENOBUFS, let it stand, since
985 * everything will be reevaluated. */
986 if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
987 sset_add(&ofproto->port_poll_set, devname);
988 ofproto->port_poll_errno = 0;
990 } else if (!ofproto) {
991 /* The port was added, but we don't know with which
992 * ofproto we should associate it. Delete it. */
993 dpif_port_del(backer->dpif, port.port_no);
995 struct ofport_dpif *ofport;
997 ofport = ofport_dpif_cast(shash_find_data(
998 &ofproto->up.port_by_name, devname));
1000 && ofport->odp_port != port.port_no
1001 && !odp_port_to_ofport(backer, port.port_no))
1003 /* 'ofport''s datapath port number has changed from
1004 * 'ofport->odp_port' to 'port.port_no'. Update our internal data
1005 * structures to match. */
1006 ovs_rwlock_wrlock(&backer->odp_to_ofport_lock);
1007 hmap_remove(&backer->odp_to_ofport_map, &ofport->odp_port_node);
1008 ofport->odp_port = port.port_no;
1009 hmap_insert(&backer->odp_to_ofport_map, &ofport->odp_port_node,
1010 hash_odp_port(port.port_no));
1011 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
1012 backer->need_revalidate = REV_RECONFIGURE;
1015 dpif_port_destroy(&port);
1018 /* Propagate 'error' to all ofprotos based on 'backer'. */
1020 process_dpif_port_error(struct dpif_backer *backer, int error)
1022 struct ofproto_dpif *ofproto;
1024 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1025 if (ofproto->backer == backer) {
1026 sset_clear(&ofproto->port_poll_set);
1027 ofproto->port_poll_errno = error;
1033 dpif_backer_run_fast(struct dpif_backer *backer)
1035 udpif_run(backer->udpif);
1036 handle_upcalls(backer);
1042 type_run_fast(const char *type)
1044 struct dpif_backer *backer;
1046 backer = shash_find_data(&all_dpif_backers, type);
1048 /* This is not necessarily a problem, since backers are only
1049 * created on demand. */
1053 return dpif_backer_run_fast(backer);
1059 static long long int port_rl = LLONG_MIN;
1061 if (time_msec() >= port_rl) {
1062 struct ofproto_dpif *ofproto;
1064 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1065 run_fast(&ofproto->up);
1067 port_rl = time_msec() + 200;
1072 type_wait(const char *type)
1074 struct dpif_backer *backer;
1076 backer = shash_find_data(&all_dpif_backers, type);
1078 /* This is not necessarily a problem, since backers are only
1079 * created on demand. */
1083 if (backer->governor) {
1084 governor_wait(backer->governor);
1087 timer_wait(&backer->next_expiration);
1088 dpif_wait(backer->dpif);
1089 udpif_wait(backer->udpif);
1092 /* Basic life-cycle. */
1094 static int add_internal_flows(struct ofproto_dpif *);
1096 static struct ofproto *
1099 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
1100 return &ofproto->up;
1104 dealloc(struct ofproto *ofproto_)
1106 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1111 close_dpif_backer(struct dpif_backer *backer)
1113 struct shash_node *node;
1115 ovs_assert(backer->refcount > 0);
1117 if (--backer->refcount) {
1121 drop_key_clear(backer);
1122 hmap_destroy(&backer->drop_keys);
1124 simap_destroy(&backer->tnl_backers);
1125 ovs_rwlock_destroy(&backer->odp_to_ofport_lock);
1126 hmap_destroy(&backer->odp_to_ofport_map);
1127 node = shash_find(&all_dpif_backers, backer->type);
1129 shash_delete(&all_dpif_backers, node);
1130 udpif_destroy(backer->udpif);
1131 dpif_close(backer->dpif);
1133 ovs_assert(hmap_is_empty(&backer->subfacets));
1134 hmap_destroy(&backer->subfacets);
1135 governor_destroy(backer->governor);
1140 /* Datapath port slated for removal from datapath. */
1141 struct odp_garbage {
1142 struct list list_node;
1143 odp_port_t odp_port;
1147 open_dpif_backer(const char *type, struct dpif_backer **backerp)
1149 struct dpif_backer *backer;
1150 struct dpif_port_dump port_dump;
1151 struct dpif_port port;
1152 struct shash_node *node;
1153 struct list garbage_list;
1154 struct odp_garbage *garbage, *next;
1160 backer = shash_find_data(&all_dpif_backers, type);
1167 backer_name = xasprintf("ovs-%s", type);
1169 /* Remove any existing datapaths, since we assume we're the only
1170 * userspace controlling the datapath. */
1172 dp_enumerate_names(type, &names);
1173 SSET_FOR_EACH(name, &names) {
1174 struct dpif *old_dpif;
1176 /* Don't remove our backer if it exists. */
1177 if (!strcmp(name, backer_name)) {
1181 if (dpif_open(name, type, &old_dpif)) {
1182 VLOG_WARN("couldn't open old datapath %s to remove it", name);
1184 dpif_delete(old_dpif);
1185 dpif_close(old_dpif);
1188 sset_destroy(&names);
1190 backer = xmalloc(sizeof *backer);
1192 error = dpif_create_and_open(backer_name, type, &backer->dpif);
1195 VLOG_ERR("failed to open datapath of type %s: %s", type,
1196 ovs_strerror(error));
1200 backer->udpif = udpif_create(backer, backer->dpif);
1202 backer->type = xstrdup(type);
1203 backer->governor = NULL;
1204 backer->refcount = 1;
1205 hmap_init(&backer->odp_to_ofport_map);
1206 ovs_rwlock_init(&backer->odp_to_ofport_lock);
1207 hmap_init(&backer->drop_keys);
1208 hmap_init(&backer->subfacets);
1209 timer_set_duration(&backer->next_expiration, 1000);
1210 backer->need_revalidate = 0;
1211 simap_init(&backer->tnl_backers);
1212 backer->recv_set_enable = !ofproto_get_flow_restore_wait();
1215 if (backer->recv_set_enable) {
1216 dpif_flow_flush(backer->dpif);
1219 /* Loop through the ports already on the datapath and remove any
1220 * that we don't need anymore. */
1221 list_init(&garbage_list);
1222 dpif_port_dump_start(&port_dump, backer->dpif);
1223 while (dpif_port_dump_next(&port_dump, &port)) {
1224 node = shash_find(&init_ofp_ports, port.name);
1225 if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
1226 garbage = xmalloc(sizeof *garbage);
1227 garbage->odp_port = port.port_no;
1228 list_push_front(&garbage_list, &garbage->list_node);
1231 dpif_port_dump_done(&port_dump);
1233 LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
1234 dpif_port_del(backer->dpif, garbage->odp_port);
1235 list_remove(&garbage->list_node);
1239 shash_add(&all_dpif_backers, type, backer);
1241 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
1243 VLOG_ERR("failed to listen on datapath of type %s: %s",
1244 type, ovs_strerror(error));
1245 close_dpif_backer(backer);
1248 udpif_recv_set(backer->udpif, n_handler_threads,
1249 backer->recv_set_enable);
1250 backer->n_handler_threads = n_handler_threads;
1252 backer->max_n_subfacet = 0;
1253 backer->created = time_msec();
1254 backer->last_minute = backer->created;
1255 memset(&backer->hourly, 0, sizeof backer->hourly);
1256 memset(&backer->daily, 0, sizeof backer->daily);
1257 memset(&backer->lifetime, 0, sizeof backer->lifetime);
1258 backer->subfacet_add_count = 0;
1259 backer->subfacet_del_count = 0;
1260 backer->total_subfacet_add_count = 0;
1261 backer->total_subfacet_del_count = 0;
1262 backer->avg_n_subfacet = 0;
1263 backer->avg_subfacet_life = 0;
1269 construct(struct ofproto *ofproto_)
1271 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1272 struct shash_node *node, *next;
1276 error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
1281 max_ports = dpif_get_max_ports(ofproto->backer->dpif);
1282 ofproto_init_max_ports(ofproto_, MIN(max_ports, ofp_to_u16(OFPP_MAX)));
1284 ofproto->netflow = NULL;
1285 ofproto->sflow = NULL;
1286 ofproto->ipfix = NULL;
1287 ofproto->stp = NULL;
1288 hmap_init(&ofproto->bundles);
1289 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
1290 ofproto->mbridge = mbridge_create();
1291 ofproto->has_bonded_bundles = false;
1292 ovs_mutex_init(&ofproto->vsp_mutex);
1294 classifier_init(&ofproto->facets);
1295 ofproto->consistency_rl = LLONG_MIN;
1297 list_init(&ofproto->completions);
1299 ovs_mutex_init(&ofproto->flow_mod_mutex);
1300 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1301 list_init(&ofproto->flow_mods);
1302 ofproto->n_flow_mods = 0;
1303 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1305 ovs_mutex_init(&ofproto->pin_mutex);
1306 ovs_mutex_lock(&ofproto->pin_mutex);
1307 list_init(&ofproto->pins);
1308 ofproto->n_pins = 0;
1309 ovs_mutex_unlock(&ofproto->pin_mutex);
1311 ofproto_dpif_unixctl_init();
1313 hmap_init(&ofproto->vlandev_map);
1314 hmap_init(&ofproto->realdev_vid_map);
1316 sset_init(&ofproto->ports);
1317 sset_init(&ofproto->ghost_ports);
1318 sset_init(&ofproto->port_poll_set);
1319 ofproto->port_poll_errno = 0;
1321 SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
1322 struct iface_hint *iface_hint = node->data;
1324 if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
1325 /* Check if the datapath already has this port. */
1326 if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
1327 sset_add(&ofproto->ports, node->name);
1330 free(iface_hint->br_name);
1331 free(iface_hint->br_type);
1333 shash_delete(&init_ofp_ports, node);
1337 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
1338 hash_string(ofproto->up.name, 0));
1339 memset(&ofproto->stats, 0, sizeof ofproto->stats);
1341 ofproto_init_tables(ofproto_, N_TABLES);
1342 error = add_internal_flows(ofproto);
1343 ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
1346 ofproto->n_missed = 0;
1352 add_internal_flow(struct ofproto_dpif *ofproto, int id,
1353 const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
1355 struct ofputil_flow_mod fm;
1358 match_init_catchall(&fm.match);
1360 match_set_reg(&fm.match, 0, id);
1361 fm.new_cookie = htonll(0);
1362 fm.cookie = htonll(0);
1363 fm.cookie_mask = htonll(0);
1364 fm.modify_cookie = false;
1365 fm.table_id = TBL_INTERNAL;
1366 fm.command = OFPFC_ADD;
1367 fm.idle_timeout = 0;
1368 fm.hard_timeout = 0;
1372 fm.ofpacts = ofpacts->data;
1373 fm.ofpacts_len = ofpacts->size;
1375 error = ofproto_flow_mod(&ofproto->up, &fm);
1377 VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
1378 id, ofperr_to_string(error));
1382 if (rule_dpif_lookup_in_table(ofproto, &fm.match.flow, NULL, TBL_INTERNAL,
1384 rule_dpif_release(*rulep);
1393 add_internal_flows(struct ofproto_dpif *ofproto)
1395 struct ofpact_controller *controller;
1396 uint64_t ofpacts_stub[128 / 8];
1397 struct ofpbuf ofpacts;
1401 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
1404 controller = ofpact_put_CONTROLLER(&ofpacts);
1405 controller->max_len = UINT16_MAX;
1406 controller->controller_id = 0;
1407 controller->reason = OFPR_NO_MATCH;
1408 ofpact_pad(&ofpacts);
1410 error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
1415 ofpbuf_clear(&ofpacts);
1416 error = add_internal_flow(ofproto, id++, &ofpacts,
1417 &ofproto->no_packet_in_rule);
1422 error = add_internal_flow(ofproto, id++, &ofpacts,
1423 &ofproto->drop_frags_rule);
1428 complete_operations(struct ofproto_dpif *ofproto)
1430 struct dpif_completion *c, *next;
1432 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
1433 ofoperation_complete(c->op, 0);
1434 list_remove(&c->list_node);
1440 destruct(struct ofproto *ofproto_)
1442 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1443 struct rule_dpif *rule, *next_rule;
1444 struct ofputil_packet_in *pin, *next_pin;
1445 struct ofputil_flow_mod *fm, *next_fm;
1446 struct facet *facet, *next_facet;
1447 struct cls_cursor cursor;
1448 struct oftable *table;
1450 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1451 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1452 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1453 CLS_CURSOR_FOR_EACH_SAFE (facet, next_facet, cr, &cursor) {
1454 facet_remove(facet);
1457 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1458 ovs_rwlock_wrlock(&xlate_rwlock);
1459 xlate_remove_ofproto(ofproto);
1460 ovs_rwlock_unlock(&xlate_rwlock);
1462 flow_miss_batch_ofproto_destroyed(ofproto->backer->udpif, ofproto);
1464 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
1465 complete_operations(ofproto);
1467 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1468 struct cls_cursor cursor;
1470 ovs_rwlock_wrlock(&table->cls.rwlock);
1471 cls_cursor_init(&cursor, &table->cls, NULL);
1472 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1473 ofproto_rule_delete(&ofproto->up, &table->cls, &rule->up);
1475 ovs_rwlock_unlock(&table->cls.rwlock);
1477 complete_operations(ofproto);
1479 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1480 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &ofproto->flow_mods) {
1481 list_remove(&fm->list_node);
1482 ofproto->n_flow_mods--;
1486 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1487 ovs_mutex_destroy(&ofproto->flow_mod_mutex);
1489 ovs_mutex_lock(&ofproto->pin_mutex);
1490 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &ofproto->pins) {
1491 list_remove(&pin->list_node);
1493 free(CONST_CAST(void *, pin->packet));
1496 ovs_mutex_unlock(&ofproto->pin_mutex);
1497 ovs_mutex_destroy(&ofproto->pin_mutex);
1499 mbridge_unref(ofproto->mbridge);
1501 netflow_destroy(ofproto->netflow);
1502 dpif_sflow_unref(ofproto->sflow);
1503 hmap_destroy(&ofproto->bundles);
1504 mac_learning_unref(ofproto->ml);
1506 classifier_destroy(&ofproto->facets);
1508 hmap_destroy(&ofproto->vlandev_map);
1509 hmap_destroy(&ofproto->realdev_vid_map);
1511 sset_destroy(&ofproto->ports);
1512 sset_destroy(&ofproto->ghost_ports);
1513 sset_destroy(&ofproto->port_poll_set);
1515 ovs_mutex_destroy(&ofproto->vsp_mutex);
1517 close_dpif_backer(ofproto->backer);
1521 run_fast(struct ofproto *ofproto_)
1523 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1524 struct ofputil_packet_in *pin, *next_pin;
1525 struct ofputil_flow_mod *fm, *next_fm;
1526 struct list flow_mods, pins;
1527 struct ofport_dpif *ofport;
1529 /* Do not perform any periodic activity required by 'ofproto' while
1530 * waiting for flow restore to complete. */
1531 if (ofproto_get_flow_restore_wait()) {
1535 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1536 if (ofproto->n_flow_mods) {
1537 flow_mods = ofproto->flow_mods;
1538 list_moved(&flow_mods);
1539 list_init(&ofproto->flow_mods);
1540 ofproto->n_flow_mods = 0;
1542 list_init(&flow_mods);
1544 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1546 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &flow_mods) {
1547 int error = ofproto_flow_mod(&ofproto->up, fm);
1548 if (error && !VLOG_DROP_WARN(&rl)) {
1549 VLOG_WARN("learning action failed to modify flow table (%s)",
1550 ofperr_get_name(error));
1553 list_remove(&fm->list_node);
1558 ovs_mutex_lock(&ofproto->pin_mutex);
1559 if (ofproto->n_pins) {
1560 pins = ofproto->pins;
1562 list_init(&ofproto->pins);
1563 ofproto->n_pins = 0;
1567 ovs_mutex_unlock(&ofproto->pin_mutex);
1569 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
1570 connmgr_send_packet_in(ofproto->up.connmgr, pin);
1571 list_remove(&pin->list_node);
1572 free(CONST_CAST(void *, pin->packet));
1576 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1577 port_run_fast(ofport);
1584 run(struct ofproto *ofproto_)
1586 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1587 struct ofport_dpif *ofport;
1588 struct ofbundle *bundle;
1592 complete_operations(ofproto);
1595 if (mbridge_need_revalidate(ofproto->mbridge)) {
1596 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1597 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1598 mac_learning_flush(ofproto->ml);
1599 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1602 /* Do not perform any periodic activity below required by 'ofproto' while
1603 * waiting for flow restore to complete. */
1604 if (ofproto_get_flow_restore_wait()) {
1608 error = run_fast(ofproto_);
1613 if (ofproto->netflow) {
1614 if (netflow_run(ofproto->netflow)) {
1615 send_netflow_active_timeouts(ofproto);
1618 if (ofproto->sflow) {
1619 dpif_sflow_run(ofproto->sflow);
1621 if (ofproto->ipfix) {
1622 dpif_ipfix_run(ofproto->ipfix);
1625 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1628 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1633 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1634 if (mac_learning_run(ofproto->ml)) {
1635 ofproto->backer->need_revalidate = REV_MAC_LEARNING;
1637 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1639 /* Check the consistency of a random facet, to aid debugging. */
1640 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1641 if (time_msec() >= ofproto->consistency_rl
1642 && !classifier_is_empty(&ofproto->facets)
1643 && !ofproto->backer->need_revalidate) {
1644 struct cls_table *table;
1645 struct cls_rule *cr;
1646 struct facet *facet;
1648 ofproto->consistency_rl = time_msec() + 250;
1650 table = CONTAINER_OF(hmap_random_node(&ofproto->facets.tables),
1651 struct cls_table, hmap_node);
1652 cr = CONTAINER_OF(hmap_random_node(&table->rules), struct cls_rule,
1654 facet = CONTAINER_OF(cr, struct facet, cr);
1656 if (!facet_check_consistency(facet)) {
1657 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
1660 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1666 wait(struct ofproto *ofproto_)
1668 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1669 struct ofport_dpif *ofport;
1670 struct ofbundle *bundle;
1672 if (!clogged && !list_is_empty(&ofproto->completions)) {
1673 poll_immediate_wake();
1676 if (ofproto_get_flow_restore_wait()) {
1680 if (ofproto->sflow) {
1681 dpif_sflow_wait(ofproto->sflow);
1683 if (ofproto->ipfix) {
1684 dpif_ipfix_wait(ofproto->ipfix);
1686 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1689 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1690 bundle_wait(bundle);
1692 if (ofproto->netflow) {
1693 netflow_wait(ofproto->netflow);
1695 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
1696 mac_learning_wait(ofproto->ml);
1697 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1699 if (ofproto->backer->need_revalidate) {
1700 /* Shouldn't happen, but if it does just go around again. */
1701 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
1702 poll_immediate_wake();
1707 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
1709 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1710 struct cls_cursor cursor;
1711 size_t n_subfacets = 0;
1712 struct facet *facet;
1714 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1715 simap_increase(usage, "facets", classifier_count(&ofproto->facets));
1716 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1718 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1719 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1720 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
1721 n_subfacets += list_size(&facet->subfacets);
1723 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1724 simap_increase(usage, "subfacets", n_subfacets);
1728 flush(struct ofproto *ofproto_)
1730 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1731 struct subfacet *subfacet, *next_subfacet;
1732 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
1736 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
1737 &ofproto->backer->subfacets) {
1738 if (subfacet->facet->ofproto != ofproto) {
1742 if (subfacet->path != SF_NOT_INSTALLED) {
1743 batch[n_batch++] = subfacet;
1744 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
1745 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1749 subfacet_destroy(subfacet);
1754 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1759 get_features(struct ofproto *ofproto_ OVS_UNUSED,
1760 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
1762 *arp_match_ip = true;
1763 *actions = (OFPUTIL_A_OUTPUT |
1764 OFPUTIL_A_SET_VLAN_VID |
1765 OFPUTIL_A_SET_VLAN_PCP |
1766 OFPUTIL_A_STRIP_VLAN |
1767 OFPUTIL_A_SET_DL_SRC |
1768 OFPUTIL_A_SET_DL_DST |
1769 OFPUTIL_A_SET_NW_SRC |
1770 OFPUTIL_A_SET_NW_DST |
1771 OFPUTIL_A_SET_NW_TOS |
1772 OFPUTIL_A_SET_TP_SRC |
1773 OFPUTIL_A_SET_TP_DST |
1778 get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
1780 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1781 struct dpif_dp_stats s;
1782 uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
1785 strcpy(ots->name, "classifier");
1787 dpif_get_dp_stats(ofproto->backer->dpif, &s);
1788 rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes);
1789 rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in, &n_bytes);
1790 rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags, &n_bytes);
1792 n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
1793 ots->lookup_count = htonll(n_lookup);
1794 ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
1797 static struct ofport *
1800 struct ofport_dpif *port = xmalloc(sizeof *port);
1805 port_dealloc(struct ofport *port_)
1807 struct ofport_dpif *port = ofport_dpif_cast(port_);
1812 port_construct(struct ofport *port_)
1814 struct ofport_dpif *port = ofport_dpif_cast(port_);
1815 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1816 const struct netdev *netdev = port->up.netdev;
1817 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1818 struct dpif_port dpif_port;
1821 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1822 port->bundle = NULL;
1825 port->may_enable = true;
1826 port->stp_port = NULL;
1827 port->stp_state = STP_DISABLED;
1828 port->is_tunnel = false;
1832 port->realdev_ofp_port = 0;
1833 port->vlandev_vid = 0;
1834 port->carrier_seq = netdev_get_carrier_resets(netdev);
1836 if (netdev_vport_is_patch(netdev)) {
1837 /* By bailing out here, we don't submit the port to the sFlow module
1838 * to be considered for counter polling export. This is correct
1839 * because the patch port represents an interface that sFlow considers
1840 * to be "internal" to the switch as a whole, and therefore not an
1841 * candidate for counter polling. */
1842 port->odp_port = ODPP_NONE;
1843 ofport_update_peer(port);
1847 error = dpif_port_query_by_name(ofproto->backer->dpif,
1848 netdev_vport_get_dpif_port(netdev, namebuf,
1855 port->odp_port = dpif_port.port_no;
1857 if (netdev_get_tunnel_config(netdev)) {
1858 tnl_port_add(port, port->up.netdev, port->odp_port);
1859 port->is_tunnel = true;
1861 /* Sanity-check that a mapping doesn't already exist. This
1862 * shouldn't happen for non-tunnel ports. */
1863 if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
1864 VLOG_ERR("port %s already has an OpenFlow port number",
1866 dpif_port_destroy(&dpif_port);
1870 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1871 hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
1872 hash_odp_port(port->odp_port));
1873 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1875 dpif_port_destroy(&dpif_port);
1877 if (ofproto->sflow) {
1878 dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
1885 port_destruct(struct ofport *port_)
1887 struct ofport_dpif *port = ofport_dpif_cast(port_);
1888 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1889 const char *devname = netdev_get_name(port->up.netdev);
1890 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1891 const char *dp_port_name;
1893 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1894 ovs_rwlock_wrlock(&xlate_rwlock);
1895 xlate_ofport_remove(port);
1896 ovs_rwlock_unlock(&xlate_rwlock);
1898 dp_port_name = netdev_vport_get_dpif_port(port->up.netdev, namebuf,
1900 if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
1901 /* The underlying device is still there, so delete it. This
1902 * happens when the ofproto is being destroyed, since the caller
1903 * assumes that removal of attached ports will happen as part of
1905 if (!port->is_tunnel) {
1906 dpif_port_del(ofproto->backer->dpif, port->odp_port);
1911 port->peer->peer = NULL;
1915 if (port->odp_port != ODPP_NONE && !port->is_tunnel) {
1916 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1917 hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
1918 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1922 sset_find_and_delete(&ofproto->ports, devname);
1923 sset_find_and_delete(&ofproto->ghost_ports, devname);
1924 bundle_remove(port_);
1925 set_cfm(port_, NULL);
1926 set_bfd(port_, NULL);
1927 if (ofproto->sflow) {
1928 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1935 port_modified(struct ofport *port_)
1937 struct ofport_dpif *port = ofport_dpif_cast(port_);
1939 if (port->bundle && port->bundle->bond) {
1940 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1944 cfm_set_netdev(port->cfm, port->up.netdev);
1948 bfd_set_netdev(port->bfd, port->up.netdev);
1951 if (port->is_tunnel && tnl_port_reconfigure(port, port->up.netdev,
1953 ofproto_dpif_cast(port->up.ofproto)->backer->need_revalidate =
1957 ofport_update_peer(port);
1961 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1963 struct ofport_dpif *port = ofport_dpif_cast(port_);
1964 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1965 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1967 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1968 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
1969 OFPUTIL_PC_NO_PACKET_IN)) {
1970 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1972 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1973 bundle_update(port->bundle);
1979 set_sflow(struct ofproto *ofproto_,
1980 const struct ofproto_sflow_options *sflow_options)
1982 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1983 struct dpif_sflow *ds = ofproto->sflow;
1985 if (sflow_options) {
1987 struct ofport_dpif *ofport;
1989 ds = ofproto->sflow = dpif_sflow_create();
1990 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1991 dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
1993 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1995 dpif_sflow_set_options(ds, sflow_options);
1998 dpif_sflow_unref(ds);
1999 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2000 ofproto->sflow = NULL;
2008 struct ofproto *ofproto_,
2009 const struct ofproto_ipfix_bridge_exporter_options *bridge_exporter_options,
2010 const struct ofproto_ipfix_flow_exporter_options *flow_exporters_options,
2011 size_t n_flow_exporters_options)
2013 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2014 struct dpif_ipfix *di = ofproto->ipfix;
2015 bool has_options = bridge_exporter_options || flow_exporters_options;
2017 if (has_options && !di) {
2018 di = ofproto->ipfix = dpif_ipfix_create();
2022 /* Call set_options in any case to cleanly flush the flow
2023 * caches in the last exporters that are to be destroyed. */
2024 dpif_ipfix_set_options(
2025 di, bridge_exporter_options, flow_exporters_options,
2026 n_flow_exporters_options);
2029 dpif_ipfix_unref(di);
2030 ofproto->ipfix = NULL;
2038 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
2040 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2047 struct ofproto_dpif *ofproto;
2049 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2050 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2051 ofport->cfm = cfm_create(ofport->up.netdev);
2054 if (cfm_configure(ofport->cfm, s)) {
2060 cfm_unref(ofport->cfm);
2066 get_cfm_status(const struct ofport *ofport_,
2067 struct ofproto_cfm_status *status)
2069 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2072 status->faults = cfm_get_fault(ofport->cfm);
2073 status->remote_opstate = cfm_get_opup(ofport->cfm);
2074 status->health = cfm_get_health(ofport->cfm);
2075 cfm_get_remote_mpids(ofport->cfm, &status->rmps, &status->n_rmps);
2083 set_bfd(struct ofport *ofport_, const struct smap *cfg)
2085 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
2086 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2090 ofport->bfd = bfd_configure(old, netdev_get_name(ofport->up.netdev),
2091 cfg, ofport->up.netdev);
2092 if (ofport->bfd != old) {
2093 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2100 get_bfd_status(struct ofport *ofport_, struct smap *smap)
2102 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2105 bfd_get_status(ofport->bfd, smap);
2112 /* Spanning Tree. */
2115 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
2117 struct ofproto_dpif *ofproto = ofproto_;
2118 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
2119 struct ofport_dpif *ofport;
2121 ofport = stp_port_get_aux(sp);
2123 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
2124 ofproto->up.name, port_num);
2126 struct eth_header *eth = pkt->l2;
2128 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
2129 if (eth_addr_is_zero(eth->eth_src)) {
2130 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
2131 "with unknown MAC", ofproto->up.name, port_num);
2133 send_packet(ofport, pkt);
2139 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
2141 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
2143 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2145 /* Only revalidate flows if the configuration changed. */
2146 if (!s != !ofproto->stp) {
2147 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2151 if (!ofproto->stp) {
2152 ofproto->stp = stp_create(ofproto_->name, s->system_id,
2153 send_bpdu_cb, ofproto);
2154 ofproto->stp_last_tick = time_msec();
2157 stp_set_bridge_id(ofproto->stp, s->system_id);
2158 stp_set_bridge_priority(ofproto->stp, s->priority);
2159 stp_set_hello_time(ofproto->stp, s->hello_time);
2160 stp_set_max_age(ofproto->stp, s->max_age);
2161 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
2163 struct ofport *ofport;
2165 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
2166 set_stp_port(ofport, NULL);
2169 stp_unref(ofproto->stp);
2170 ofproto->stp = NULL;
2177 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
2179 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2183 s->bridge_id = stp_get_bridge_id(ofproto->stp);
2184 s->designated_root = stp_get_designated_root(ofproto->stp);
2185 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
2194 update_stp_port_state(struct ofport_dpif *ofport)
2196 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2197 enum stp_state state;
2199 /* Figure out new state. */
2200 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
2204 if (ofport->stp_state != state) {
2205 enum ofputil_port_state of_state;
2208 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
2209 netdev_get_name(ofport->up.netdev),
2210 stp_state_name(ofport->stp_state),
2211 stp_state_name(state));
2212 if (stp_learn_in_state(ofport->stp_state)
2213 != stp_learn_in_state(state)) {
2214 /* xxx Learning action flows should also be flushed. */
2215 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2216 mac_learning_flush(ofproto->ml);
2217 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2219 fwd_change = stp_forward_in_state(ofport->stp_state)
2220 != stp_forward_in_state(state);
2222 ofproto->backer->need_revalidate = REV_STP;
2223 ofport->stp_state = state;
2224 ofport->stp_state_entered = time_msec();
2226 if (fwd_change && ofport->bundle) {
2227 bundle_update(ofport->bundle);
2230 /* Update the STP state bits in the OpenFlow port description. */
2231 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
2232 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
2233 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
2234 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
2235 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
2237 ofproto_port_set_state(&ofport->up, of_state);
2241 /* Configures STP on 'ofport_' using the settings defined in 's'. The
2242 * caller is responsible for assigning STP port numbers and ensuring
2243 * there are no duplicates. */
2245 set_stp_port(struct ofport *ofport_,
2246 const struct ofproto_port_stp_settings *s)
2248 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2249 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2250 struct stp_port *sp = ofport->stp_port;
2252 if (!s || !s->enable) {
2254 ofport->stp_port = NULL;
2255 stp_port_disable(sp);
2256 update_stp_port_state(ofport);
2259 } else if (sp && stp_port_no(sp) != s->port_num
2260 && ofport == stp_port_get_aux(sp)) {
2261 /* The port-id changed, so disable the old one if it's not
2262 * already in use by another port. */
2263 stp_port_disable(sp);
2266 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
2267 stp_port_enable(sp);
2269 stp_port_set_aux(sp, ofport);
2270 stp_port_set_priority(sp, s->priority);
2271 stp_port_set_path_cost(sp, s->path_cost);
2273 update_stp_port_state(ofport);
2279 get_stp_port_status(struct ofport *ofport_,
2280 struct ofproto_port_stp_status *s)
2282 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2283 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2284 struct stp_port *sp = ofport->stp_port;
2286 if (!ofproto->stp || !sp) {
2292 s->port_id = stp_port_get_id(sp);
2293 s->state = stp_port_get_state(sp);
2294 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
2295 s->role = stp_port_get_role(sp);
2296 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
2302 stp_run(struct ofproto_dpif *ofproto)
2305 long long int now = time_msec();
2306 long long int elapsed = now - ofproto->stp_last_tick;
2307 struct stp_port *sp;
2310 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
2311 ofproto->stp_last_tick = now;
2313 while (stp_get_changed_port(ofproto->stp, &sp)) {
2314 struct ofport_dpif *ofport = stp_port_get_aux(sp);
2317 update_stp_port_state(ofport);
2321 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
2322 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2323 mac_learning_flush(ofproto->ml);
2324 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2330 stp_wait(struct ofproto_dpif *ofproto)
2333 poll_timer_wait(1000);
2338 set_queues(struct ofport *ofport_, const struct ofproto_port_queue *qdscp,
2341 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2342 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2344 if (ofport->n_qdscp != n_qdscp
2345 || (n_qdscp && memcmp(ofport->qdscp, qdscp,
2346 n_qdscp * sizeof *qdscp))) {
2347 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2348 free(ofport->qdscp);
2349 ofport->qdscp = n_qdscp
2350 ? xmemdup(qdscp, n_qdscp * sizeof *qdscp)
2352 ofport->n_qdscp = n_qdscp;
2360 /* Expires all MAC learning entries associated with 'bundle' and forces its
2361 * ofproto to revalidate every flow.
2363 * Normally MAC learning entries are removed only from the ofproto associated
2364 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2365 * are removed from every ofproto. When patch ports and SLB bonds are in use
2366 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2367 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2368 * with the host from which it migrated. */
2370 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
2372 struct ofproto_dpif *ofproto = bundle->ofproto;
2373 struct mac_learning *ml = ofproto->ml;
2374 struct mac_entry *mac, *next_mac;
2376 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2377 ovs_rwlock_wrlock(&ml->rwlock);
2378 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
2379 if (mac->port.p == bundle) {
2381 struct ofproto_dpif *o;
2383 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2385 struct mac_entry *e;
2387 ovs_rwlock_wrlock(&o->ml->rwlock);
2388 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan);
2390 mac_learning_expire(o->ml, e);
2392 ovs_rwlock_unlock(&o->ml->rwlock);
2397 mac_learning_expire(ml, mac);
2400 ovs_rwlock_unlock(&ml->rwlock);
2403 static struct ofbundle *
2404 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
2406 struct ofbundle *bundle;
2408 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
2409 &ofproto->bundles) {
2410 if (bundle->aux == aux) {
2418 bundle_update(struct ofbundle *bundle)
2420 struct ofport_dpif *port;
2422 bundle->floodable = true;
2423 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2424 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2425 || !stp_forward_in_state(port->stp_state)) {
2426 bundle->floodable = false;
2433 bundle_del_port(struct ofport_dpif *port)
2435 struct ofbundle *bundle = port->bundle;
2437 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2439 list_remove(&port->bundle_node);
2440 port->bundle = NULL;
2443 lacp_slave_unregister(bundle->lacp, port);
2446 bond_slave_unregister(bundle->bond, port);
2449 bundle_update(bundle);
2453 bundle_add_port(struct ofbundle *bundle, ofp_port_t ofp_port,
2454 struct lacp_slave_settings *lacp)
2456 struct ofport_dpif *port;
2458 port = get_ofp_port(bundle->ofproto, ofp_port);
2463 if (port->bundle != bundle) {
2464 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2466 bundle_remove(&port->up);
2469 port->bundle = bundle;
2470 list_push_back(&bundle->ports, &port->bundle_node);
2471 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2472 || !stp_forward_in_state(port->stp_state)) {
2473 bundle->floodable = false;
2477 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2478 lacp_slave_register(bundle->lacp, port, lacp);
2485 bundle_destroy(struct ofbundle *bundle)
2487 struct ofproto_dpif *ofproto;
2488 struct ofport_dpif *port, *next_port;
2494 ofproto = bundle->ofproto;
2495 mbridge_unregister_bundle(ofproto->mbridge, bundle->aux);
2497 ovs_rwlock_wrlock(&xlate_rwlock);
2498 xlate_bundle_remove(bundle);
2499 ovs_rwlock_unlock(&xlate_rwlock);
2501 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2502 bundle_del_port(port);
2505 bundle_flush_macs(bundle, true);
2506 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
2508 free(bundle->trunks);
2509 lacp_unref(bundle->lacp);
2510 bond_unref(bundle->bond);
2515 bundle_set(struct ofproto *ofproto_, void *aux,
2516 const struct ofproto_bundle_settings *s)
2518 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2519 bool need_flush = false;
2520 struct ofport_dpif *port;
2521 struct ofbundle *bundle;
2522 unsigned long *trunks;
2528 bundle_destroy(bundle_lookup(ofproto, aux));
2532 ovs_assert(s->n_slaves == 1 || s->bond != NULL);
2533 ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
2535 bundle = bundle_lookup(ofproto, aux);
2537 bundle = xmalloc(sizeof *bundle);
2539 bundle->ofproto = ofproto;
2540 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
2541 hash_pointer(aux, 0));
2543 bundle->name = NULL;
2545 list_init(&bundle->ports);
2546 bundle->vlan_mode = PORT_VLAN_TRUNK;
2548 bundle->trunks = NULL;
2549 bundle->use_priority_tags = s->use_priority_tags;
2550 bundle->lacp = NULL;
2551 bundle->bond = NULL;
2553 bundle->floodable = true;
2554 mbridge_register_bundle(ofproto->mbridge, bundle);
2557 if (!bundle->name || strcmp(s->name, bundle->name)) {
2559 bundle->name = xstrdup(s->name);
2564 if (!bundle->lacp) {
2565 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2566 bundle->lacp = lacp_create();
2568 lacp_configure(bundle->lacp, s->lacp);
2570 lacp_unref(bundle->lacp);
2571 bundle->lacp = NULL;
2574 /* Update set of ports. */
2576 for (i = 0; i < s->n_slaves; i++) {
2577 if (!bundle_add_port(bundle, s->slaves[i],
2578 s->lacp ? &s->lacp_slaves[i] : NULL)) {
2582 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
2583 struct ofport_dpif *next_port;
2585 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2586 for (i = 0; i < s->n_slaves; i++) {
2587 if (s->slaves[i] == port->up.ofp_port) {
2592 bundle_del_port(port);
2596 ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
2598 if (list_is_empty(&bundle->ports)) {
2599 bundle_destroy(bundle);
2603 /* Set VLAN tagging mode */
2604 if (s->vlan_mode != bundle->vlan_mode
2605 || s->use_priority_tags != bundle->use_priority_tags) {
2606 bundle->vlan_mode = s->vlan_mode;
2607 bundle->use_priority_tags = s->use_priority_tags;
2612 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
2613 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
2615 if (vlan != bundle->vlan) {
2616 bundle->vlan = vlan;
2620 /* Get trunked VLANs. */
2621 switch (s->vlan_mode) {
2622 case PORT_VLAN_ACCESS:
2626 case PORT_VLAN_TRUNK:
2627 trunks = CONST_CAST(unsigned long *, s->trunks);
2630 case PORT_VLAN_NATIVE_UNTAGGED:
2631 case PORT_VLAN_NATIVE_TAGGED:
2632 if (vlan != 0 && (!s->trunks
2633 || !bitmap_is_set(s->trunks, vlan)
2634 || bitmap_is_set(s->trunks, 0))) {
2635 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2637 trunks = bitmap_clone(s->trunks, 4096);
2639 trunks = bitmap_allocate1(4096);
2641 bitmap_set1(trunks, vlan);
2642 bitmap_set0(trunks, 0);
2644 trunks = CONST_CAST(unsigned long *, s->trunks);
2651 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
2652 free(bundle->trunks);
2653 if (trunks == s->trunks) {
2654 bundle->trunks = vlan_bitmap_clone(trunks);
2656 bundle->trunks = trunks;
2661 if (trunks != s->trunks) {
2666 if (!list_is_short(&bundle->ports)) {
2667 bundle->ofproto->has_bonded_bundles = true;
2669 if (bond_reconfigure(bundle->bond, s->bond)) {
2670 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2673 bundle->bond = bond_create(s->bond);
2674 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2677 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2678 bond_slave_register(bundle->bond, port, port->up.netdev);
2681 bond_unref(bundle->bond);
2682 bundle->bond = NULL;
2685 /* If we changed something that would affect MAC learning, un-learn
2686 * everything on this port and force flow revalidation. */
2688 bundle_flush_macs(bundle, false);
2695 bundle_remove(struct ofport *port_)
2697 struct ofport_dpif *port = ofport_dpif_cast(port_);
2698 struct ofbundle *bundle = port->bundle;
2701 bundle_del_port(port);
2702 if (list_is_empty(&bundle->ports)) {
2703 bundle_destroy(bundle);
2704 } else if (list_is_short(&bundle->ports)) {
2705 bond_unref(bundle->bond);
2706 bundle->bond = NULL;
2712 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
2714 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
2715 struct ofport_dpif *port = port_;
2716 uint8_t ea[ETH_ADDR_LEN];
2719 error = netdev_get_etheraddr(port->up.netdev, ea);
2721 struct ofpbuf packet;
2724 ofpbuf_init(&packet, 0);
2725 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
2727 memcpy(packet_pdu, pdu, pdu_size);
2729 send_packet(port, &packet);
2730 ofpbuf_uninit(&packet);
2732 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
2733 "%s (%s)", port->bundle->name,
2734 netdev_get_name(port->up.netdev), ovs_strerror(error));
2739 bundle_send_learning_packets(struct ofbundle *bundle)
2741 struct ofproto_dpif *ofproto = bundle->ofproto;
2742 struct ofpbuf *learning_packet;
2743 int error, n_packets, n_errors;
2744 struct mac_entry *e;
2745 struct list packets;
2747 list_init(&packets);
2748 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
2749 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
2750 if (e->port.p != bundle) {
2753 learning_packet = bond_compose_learning_packet(bundle->bond,
2756 learning_packet->private_p = port_void;
2757 list_push_back(&packets, &learning_packet->list_node);
2760 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2762 error = n_packets = n_errors = 0;
2763 LIST_FOR_EACH (learning_packet, list_node, &packets) {
2766 ret = send_packet(learning_packet->private_p, learning_packet);
2773 ofpbuf_list_delete(&packets);
2776 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2777 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2778 "packets, last error was: %s",
2779 bundle->name, n_errors, n_packets, ovs_strerror(error));
2781 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2782 bundle->name, n_packets);
2787 bundle_run(struct ofbundle *bundle)
2790 lacp_run(bundle->lacp, send_pdu_cb);
2793 struct ofport_dpif *port;
2795 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2796 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
2799 if (bond_run(bundle->bond, lacp_status(bundle->lacp))) {
2800 bundle->ofproto->backer->need_revalidate = REV_BOND;
2803 if (bond_should_send_learning_packets(bundle->bond)) {
2804 bundle_send_learning_packets(bundle);
2810 bundle_wait(struct ofbundle *bundle)
2813 lacp_wait(bundle->lacp);
2816 bond_wait(bundle->bond);
2823 mirror_set__(struct ofproto *ofproto_, void *aux,
2824 const struct ofproto_mirror_settings *s)
2826 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2827 struct ofbundle **srcs, **dsts;
2832 mirror_destroy(ofproto->mbridge, aux);
2836 srcs = xmalloc(s->n_srcs * sizeof *srcs);
2837 dsts = xmalloc(s->n_dsts * sizeof *dsts);
2839 for (i = 0; i < s->n_srcs; i++) {
2840 srcs[i] = bundle_lookup(ofproto, s->srcs[i]);
2843 for (i = 0; i < s->n_dsts; i++) {
2844 dsts[i] = bundle_lookup(ofproto, s->dsts[i]);
2847 error = mirror_set(ofproto->mbridge, aux, s->name, srcs, s->n_srcs, dsts,
2848 s->n_dsts, s->src_vlans,
2849 bundle_lookup(ofproto, s->out_bundle), s->out_vlan);
2856 mirror_get_stats__(struct ofproto *ofproto, void *aux,
2857 uint64_t *packets, uint64_t *bytes)
2860 return mirror_get_stats(ofproto_dpif_cast(ofproto)->mbridge, aux, packets,
2865 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2867 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2868 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2869 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2870 mac_learning_flush(ofproto->ml);
2872 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2877 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2879 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2880 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2881 return bundle && mirror_bundle_out(ofproto->mbridge, bundle) != 0;
2885 forward_bpdu_changed(struct ofproto *ofproto_)
2887 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2888 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2892 set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
2895 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2896 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2897 mac_learning_set_idle_time(ofproto->ml, idle_time);
2898 mac_learning_set_max_entries(ofproto->ml, max_entries);
2899 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2904 static struct ofport_dpif *
2905 get_ofp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
2907 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2908 return ofport ? ofport_dpif_cast(ofport) : NULL;
2911 static struct ofport_dpif *
2912 get_odp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
2914 struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
2915 return port && &ofproto->up == port->up.ofproto ? port : NULL;
2919 ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
2920 struct ofproto_port *ofproto_port,
2921 struct dpif_port *dpif_port)
2923 ofproto_port->name = dpif_port->name;
2924 ofproto_port->type = dpif_port->type;
2925 ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
2929 ofport_update_peer(struct ofport_dpif *ofport)
2931 const struct ofproto_dpif *ofproto;
2932 struct dpif_backer *backer;
2935 if (!netdev_vport_is_patch(ofport->up.netdev)) {
2939 backer = ofproto_dpif_cast(ofport->up.ofproto)->backer;
2940 backer->need_revalidate = REV_RECONFIGURE;
2943 ofport->peer->peer = NULL;
2944 ofport->peer = NULL;
2947 peer_name = netdev_vport_patch_peer(ofport->up.netdev);
2952 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2953 struct ofport *peer_ofport;
2954 struct ofport_dpif *peer;
2957 if (ofproto->backer != backer) {
2961 peer_ofport = shash_find_data(&ofproto->up.port_by_name, peer_name);
2966 peer = ofport_dpif_cast(peer_ofport);
2967 peer_peer = netdev_vport_patch_peer(peer->up.netdev);
2968 if (peer_peer && !strcmp(netdev_get_name(ofport->up.netdev),
2970 ofport->peer = peer;
2971 ofport->peer->peer = ofport;
2981 port_run_fast(struct ofport_dpif *ofport)
2983 if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
2984 struct ofpbuf packet;
2986 ofpbuf_init(&packet, 0);
2987 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2988 send_packet(ofport, &packet);
2989 ofpbuf_uninit(&packet);
2992 if (ofport->bfd && bfd_should_send_packet(ofport->bfd)) {
2993 struct ofpbuf packet;
2995 ofpbuf_init(&packet, 0);
2996 bfd_put_packet(ofport->bfd, &packet, ofport->up.pp.hw_addr);
2997 send_packet(ofport, &packet);
2998 ofpbuf_uninit(&packet);
3003 port_run(struct ofport_dpif *ofport)
3005 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
3006 bool carrier_changed = carrier_seq != ofport->carrier_seq;
3007 bool enable = netdev_get_carrier(ofport->up.netdev);
3008 bool cfm_enable = false;
3009 bool bfd_enable = false;
3011 ofport->carrier_seq = carrier_seq;
3013 port_run_fast(ofport);
3016 int cfm_opup = cfm_get_opup(ofport->cfm);
3018 cfm_run(ofport->cfm);
3019 cfm_enable = !cfm_get_fault(ofport->cfm);
3021 if (cfm_opup >= 0) {
3022 cfm_enable = cfm_enable && cfm_opup;
3027 bfd_run(ofport->bfd);
3028 bfd_enable = bfd_forwarding(ofport->bfd);
3031 if (ofport->bfd || ofport->cfm) {
3032 enable = enable && (cfm_enable || bfd_enable);
3035 if (ofport->bundle) {
3036 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
3037 if (carrier_changed) {
3038 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
3042 if (ofport->may_enable != enable) {
3043 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3044 ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
3047 ofport->may_enable = enable;
3051 port_wait(struct ofport_dpif *ofport)
3054 cfm_wait(ofport->cfm);
3058 bfd_wait(ofport->bfd);
3063 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
3064 struct ofproto_port *ofproto_port)
3066 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3067 struct dpif_port dpif_port;
3070 if (sset_contains(&ofproto->ghost_ports, devname)) {
3071 const char *type = netdev_get_type_from_name(devname);
3073 /* We may be called before ofproto->up.port_by_name is populated with
3074 * the appropriate ofport. For this reason, we must get the name and
3075 * type from the netdev layer directly. */
3077 const struct ofport *ofport;
3079 ofport = shash_find_data(&ofproto->up.port_by_name, devname);
3080 ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
3081 ofproto_port->name = xstrdup(devname);
3082 ofproto_port->type = xstrdup(type);
3088 if (!sset_contains(&ofproto->ports, devname)) {
3091 error = dpif_port_query_by_name(ofproto->backer->dpif,
3092 devname, &dpif_port);
3094 ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
3100 port_add(struct ofproto *ofproto_, struct netdev *netdev)
3102 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3103 const char *devname = netdev_get_name(netdev);
3104 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
3105 const char *dp_port_name;
3107 if (netdev_vport_is_patch(netdev)) {
3108 sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
3112 dp_port_name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
3113 if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
3114 odp_port_t port_no = ODPP_NONE;
3117 error = dpif_port_add(ofproto->backer->dpif, netdev, &port_no);
3121 if (netdev_get_tunnel_config(netdev)) {
3122 simap_put(&ofproto->backer->tnl_backers,
3123 dp_port_name, odp_to_u32(port_no));
3127 if (netdev_get_tunnel_config(netdev)) {
3128 sset_add(&ofproto->ghost_ports, devname);
3130 sset_add(&ofproto->ports, devname);
3136 port_del(struct ofproto *ofproto_, ofp_port_t ofp_port)
3138 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3139 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
3146 sset_find_and_delete(&ofproto->ghost_ports,
3147 netdev_get_name(ofport->up.netdev));
3148 ofproto->backer->need_revalidate = REV_RECONFIGURE;
3149 if (!ofport->is_tunnel && !netdev_vport_is_patch(ofport->up.netdev)) {
3150 error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
3152 /* The caller is going to close ofport->up.netdev. If this is a
3153 * bonded port, then the bond is using that netdev, so remove it
3154 * from the bond. The client will need to reconfigure everything
3155 * after deleting ports, so then the slave will get re-added. */
3156 bundle_remove(&ofport->up);
3163 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
3165 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3170 error = netdev_get_stats(ofport->up.netdev, stats);
3172 if (!error && ofport_->ofp_port == OFPP_LOCAL) {
3173 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3175 /* ofproto->stats.tx_packets represents packets that we created
3176 * internally and sent to some port (e.g. packets sent with
3177 * send_packet()). Account for them as if they had come from
3178 * OFPP_LOCAL and got forwarded. */
3180 if (stats->rx_packets != UINT64_MAX) {
3181 stats->rx_packets += ofproto->stats.tx_packets;
3184 if (stats->rx_bytes != UINT64_MAX) {
3185 stats->rx_bytes += ofproto->stats.tx_bytes;
3188 /* ofproto->stats.rx_packets represents packets that were received on
3189 * some port and we processed internally and dropped (e.g. STP).
3190 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3192 if (stats->tx_packets != UINT64_MAX) {
3193 stats->tx_packets += ofproto->stats.rx_packets;
3196 if (stats->tx_bytes != UINT64_MAX) {
3197 stats->tx_bytes += ofproto->stats.rx_bytes;
3204 struct port_dump_state {
3209 struct ofproto_port port;
3214 port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
3216 *statep = xzalloc(sizeof(struct port_dump_state));
3221 port_dump_next(const struct ofproto *ofproto_, void *state_,
3222 struct ofproto_port *port)
3224 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3225 struct port_dump_state *state = state_;
3226 const struct sset *sset;
3227 struct sset_node *node;
3229 if (state->has_port) {
3230 ofproto_port_destroy(&state->port);
3231 state->has_port = false;
3233 sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
3234 while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
3237 error = port_query_by_name(ofproto_, node->name, &state->port);
3239 *port = state->port;
3240 state->has_port = true;
3242 } else if (error != ENODEV) {
3247 if (!state->ghost) {
3248 state->ghost = true;
3251 return port_dump_next(ofproto_, state_, port);
3258 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
3260 struct port_dump_state *state = state_;
3262 if (state->has_port) {
3263 ofproto_port_destroy(&state->port);
3270 port_poll(const struct ofproto *ofproto_, char **devnamep)
3272 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3274 if (ofproto->port_poll_errno) {
3275 int error = ofproto->port_poll_errno;
3276 ofproto->port_poll_errno = 0;
3280 if (sset_is_empty(&ofproto->port_poll_set)) {
3284 *devnamep = sset_pop(&ofproto->port_poll_set);
3289 port_poll_wait(const struct ofproto *ofproto_)
3291 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3292 dpif_port_poll_wait(ofproto->backer->dpif);
3296 port_is_lacp_current(const struct ofport *ofport_)
3298 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3299 return (ofport->bundle && ofport->bundle->lacp
3300 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
3304 /* Upcall handling. */
3306 struct flow_miss_op {
3307 struct dpif_op dpif_op;
3309 uint64_t slow_stub[128 / 8]; /* Buffer for compose_slow_path() */
3310 struct xlate_out xout;
3311 bool xout_garbage; /* 'xout' needs to be uninitialized? */
3313 struct ofpbuf mask; /* Flow mask for "put" ops. */
3314 struct odputil_keybuf maskbuf;
3316 /* If this is a "put" op, then a pointer to the subfacet that should
3317 * be marked as uninstalled if the operation fails. */
3318 struct subfacet *subfacet;
3321 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3322 * 'miss' masked by 'wc', is likely to be worth tracking in detail in userspace
3323 * and (usually) installing a datapath flow. The answer is usually "yes" (a
3324 * return value of true). However, for short flows the cost of bookkeeping is
3325 * much higher than the benefits, so when the datapath holds a large number of
3326 * flows we impose some heuristics to decide which flows are likely to be worth
3329 flow_miss_should_make_facet(struct flow_miss *miss)
3331 struct dpif_backer *backer = miss->ofproto->backer;
3334 switch (flow_miss_model) {
3335 case OFPROTO_HANDLE_MISS_AUTO:
3337 case OFPROTO_HANDLE_MISS_WITH_FACETS:
3339 case OFPROTO_HANDLE_MISS_WITHOUT_FACETS:
3343 if (!backer->governor) {
3346 n_subfacets = hmap_count(&backer->subfacets);
3347 if (n_subfacets * 2 <= flow_eviction_threshold) {
3351 backer->governor = governor_create();
3354 hash = flow_hash_in_wildcards(&miss->flow, &miss->xout.wc, 0);
3355 return governor_should_install_flow(backer->governor, hash,
3356 list_size(&miss->packets));
3359 /* Handles 'miss', which matches 'facet'. May add any required datapath
3360 * operations to 'ops', incrementing '*n_ops' for each new op.
3362 * All of the packets in 'miss' are considered to have arrived at time
3363 * 'miss->stats.used'. This is really important only for new facets: if we
3364 * just called time_msec() here, then the new subfacet or its packets could
3365 * look (occasionally) as though it was used some time after the facet was
3366 * used. That can make a one-packet flow look like it has a nonzero duration,
3367 * which looks odd in e.g. NetFlow statistics. */
3369 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
3370 struct flow_miss_op *ops, size_t *n_ops)
3372 enum subfacet_path want_path;
3373 struct subfacet *subfacet;
3375 facet->packet_count += miss->stats.n_packets;
3376 facet->prev_packet_count += miss->stats.n_packets;
3377 facet->byte_count += miss->stats.n_bytes;
3378 facet->prev_byte_count += miss->stats.n_bytes;
3380 want_path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
3382 /* Don't install the flow if it's the result of the "userspace"
3383 * action for an already installed facet. This can occur when a
3384 * datapath flow with wildcards has a "userspace" action and flows
3385 * sent to userspace result in a different subfacet, which will then
3386 * be rejected as overlapping by the datapath. */
3387 if (miss->upcall_type == DPIF_UC_ACTION
3388 && !list_is_empty(&facet->subfacets)) {
3392 subfacet = subfacet_create(facet, miss);
3393 if (subfacet->path != want_path) {
3394 struct flow_miss_op *op = &ops[(*n_ops)++];
3395 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
3397 subfacet->path = want_path;
3399 ofpbuf_use_stack(&op->mask, &op->maskbuf, sizeof op->maskbuf);
3400 if (enable_megaflows) {
3401 odp_flow_key_from_mask(&op->mask, &facet->xout.wc.masks,
3402 &miss->flow, UINT32_MAX);
3405 op->xout_garbage = false;
3406 op->dpif_op.type = DPIF_OP_FLOW_PUT;
3407 op->subfacet = subfacet;
3408 put->flags = DPIF_FP_CREATE;
3409 put->key = miss->key;
3410 put->key_len = miss->key_len;
3411 put->mask = op->mask.data;
3412 put->mask_len = op->mask.size;
3414 if (want_path == SF_FAST_PATH) {
3415 put->actions = facet->xout.odp_actions.data;
3416 put->actions_len = facet->xout.odp_actions.size;
3418 compose_slow_path(facet->ofproto, &miss->flow, facet->xout.slow,
3419 op->slow_stub, sizeof op->slow_stub,
3420 &put->actions, &put->actions_len);
3426 /* Handles flow miss 'miss'. May add any required datapath operations
3427 * to 'ops', incrementing '*n_ops' for each new op. */
3429 handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
3432 struct facet *facet;
3434 miss->ofproto->n_missed += list_size(&miss->packets);
3436 facet = facet_lookup_valid(miss->ofproto, &miss->flow);
3438 /* There does not exist a bijection between 'struct flow' and datapath
3439 * flow keys with fitness ODP_FIT_TO_LITTLE. This breaks a fundamental
3440 * assumption used throughout the facet and subfacet handling code.
3441 * Since we have to handle these misses in userspace anyway, we simply
3442 * skip facet creation, avoiding the problem altogether. */
3443 if (miss->key_fitness == ODP_FIT_TOO_LITTLE
3444 || !flow_miss_should_make_facet(miss)) {
3448 facet = facet_create(miss);
3450 handle_flow_miss_with_facet(miss, facet, ops, n_ops);
3453 static struct drop_key *
3454 drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
3457 struct drop_key *drop_key;
3459 HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
3460 &backer->drop_keys) {
3461 if (drop_key->key_len == key_len
3462 && !memcmp(drop_key->key, key, key_len)) {
3470 drop_key_clear(struct dpif_backer *backer)
3472 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3473 struct drop_key *drop_key, *next;
3475 HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
3478 error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
3480 if (error && !VLOG_DROP_WARN(&rl)) {
3481 struct ds ds = DS_EMPTY_INITIALIZER;
3482 odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
3483 VLOG_WARN("Failed to delete drop key (%s) (%s)",
3484 ovs_strerror(error), ds_cstr(&ds));
3488 hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
3489 drop_key_destroy(drop_key);
3492 udpif_drop_key_clear(backer->udpif);
3496 handle_flow_misses(struct dpif_backer *backer, struct flow_miss_batch *fmb)
3498 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH];
3499 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH];
3500 struct flow_miss *miss;
3503 /* Process each element in the to-do list, constructing the set of
3504 * operations to batch. */
3506 HMAP_FOR_EACH (miss, hmap_node, &fmb->misses) {
3507 handle_flow_miss(miss, flow_miss_ops, &n_ops);
3509 ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
3511 /* Execute batch. */
3512 for (i = 0; i < n_ops; i++) {
3513 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
3515 dpif_operate(backer->dpif, dpif_ops, n_ops);
3517 for (i = 0; i < n_ops; i++) {
3518 if (dpif_ops[i]->error != 0
3519 && flow_miss_ops[i].dpif_op.type == DPIF_OP_FLOW_PUT
3520 && flow_miss_ops[i].subfacet) {
3521 struct subfacet *subfacet = flow_miss_ops[i].subfacet;
3523 COVERAGE_INC(subfacet_install_fail);
3525 /* Zero-out subfacet counters when installation failed, but
3526 * datapath reported hits. This should not happen and
3527 * indicates a bug, since if the datapath flow exists, we
3528 * should not be attempting to create a new subfacet. A
3529 * buggy datapath could trigger this, so just zero out the
3530 * counters and log an error. */
3531 if (subfacet->dp_packet_count || subfacet->dp_byte_count) {
3532 VLOG_ERR_RL(&rl, "failed to install subfacet for which "
3533 "datapath reported hits");
3534 subfacet->dp_packet_count = subfacet->dp_byte_count = 0;
3537 subfacet->path = SF_NOT_INSTALLED;
3543 handle_sflow_upcall(struct dpif_backer *backer,
3544 const struct dpif_upcall *upcall)
3546 struct ofproto_dpif *ofproto;
3547 union user_action_cookie cookie;
3549 odp_port_t odp_in_port;
3551 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3552 &flow, NULL, &ofproto, &odp_in_port)
3553 || !ofproto->sflow) {
3557 memset(&cookie, 0, sizeof cookie);
3558 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.sflow);
3559 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
3560 odp_in_port, &cookie);
3564 handle_flow_sample_upcall(struct dpif_backer *backer,
3565 const struct dpif_upcall *upcall)
3567 struct ofproto_dpif *ofproto;
3568 union user_action_cookie cookie;
3571 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3572 &flow, NULL, &ofproto, NULL)
3573 || !ofproto->ipfix) {
3577 memset(&cookie, 0, sizeof cookie);
3578 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.flow_sample);
3580 /* The flow reflects exactly the contents of the packet. Sample
3581 * the packet using it. */
3582 dpif_ipfix_flow_sample(ofproto->ipfix, upcall->packet, &flow,
3583 cookie.flow_sample.collector_set_id,
3584 cookie.flow_sample.probability,
3585 cookie.flow_sample.obs_domain_id,
3586 cookie.flow_sample.obs_point_id);
3590 handle_ipfix_upcall(struct dpif_backer *backer,
3591 const struct dpif_upcall *upcall)
3593 struct ofproto_dpif *ofproto;
3596 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3597 &flow, NULL, &ofproto, NULL)
3598 || !ofproto->ipfix) {
3602 /* The flow reflects exactly the contents of the packet. Sample
3603 * the packet using it. */
3604 dpif_ipfix_bridge_sample(ofproto->ipfix, upcall->packet, &flow);
3608 handle_upcalls(struct dpif_backer *backer)
3610 struct flow_miss_batch *fmb;
3613 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3614 struct upcall *upcall = upcall_next(backer->udpif);
3620 switch (upcall->type) {
3622 handle_sflow_upcall(backer, &upcall->dpif_upcall);
3625 case FLOW_SAMPLE_UPCALL:
3626 handle_flow_sample_upcall(backer, &upcall->dpif_upcall);
3630 handle_ipfix_upcall(backer, &upcall->dpif_upcall);
3640 upcall_destroy(upcall);
3643 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3644 struct drop_key *drop_key = drop_key_next(backer->udpif);
3649 if (!drop_key_lookup(backer, drop_key->key, drop_key->key_len)) {
3650 hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
3651 hash_bytes(drop_key->key, drop_key->key_len, 0));
3652 dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
3653 drop_key->key, drop_key->key_len,
3654 NULL, 0, NULL, 0, NULL);
3656 drop_key_destroy(drop_key);
3660 fmb = flow_miss_batch_next(backer->udpif);
3662 handle_flow_misses(backer, fmb);
3663 flow_miss_batch_destroy(fmb);
3667 /* Flow expiration. */
3669 static int subfacet_max_idle(const struct dpif_backer *);
3670 static void update_stats(struct dpif_backer *);
3671 static void rule_expire(struct rule_dpif *);
3672 static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
3674 /* This function is called periodically by run(). Its job is to collect
3675 * updates for the flows that have been installed into the datapath, most
3676 * importantly when they last were used, and then use that information to
3677 * expire flows that have not been used recently.
3679 * Returns the number of milliseconds after which it should be called again. */
3681 expire(struct dpif_backer *backer)
3683 struct ofproto_dpif *ofproto;
3687 /* Periodically clear out the drop keys in an effort to keep them
3688 * relatively few. */
3689 drop_key_clear(backer);
3691 /* Update stats for each flow in the backer. */
3692 update_stats(backer);
3694 n_subfacets = hmap_count(&backer->subfacets);
3696 struct subfacet *subfacet;
3697 long long int total, now;
3701 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3702 total += now - subfacet->created;
3704 backer->avg_subfacet_life += total / n_subfacets;
3706 backer->avg_subfacet_life /= 2;
3708 backer->avg_n_subfacet += n_subfacets;
3709 backer->avg_n_subfacet /= 2;
3711 backer->max_n_subfacet = MAX(backer->max_n_subfacet, n_subfacets);
3713 max_idle = subfacet_max_idle(backer);
3714 expire_subfacets(backer, max_idle);
3716 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
3717 struct rule *rule, *next_rule;
3719 if (ofproto->backer != backer) {
3723 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
3725 ovs_mutex_lock(&ofproto->up.expirable_mutex);
3726 LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
3727 &ofproto->up.expirable) {
3728 rule_expire(rule_dpif_cast(rule));
3730 ovs_mutex_unlock(&ofproto->up.expirable_mutex);
3732 /* All outstanding data in existing flows has been accounted, so it's a
3733 * good time to do bond rebalancing. */
3734 if (ofproto->has_bonded_bundles) {
3735 struct ofbundle *bundle;
3737 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
3739 bond_rebalance(bundle->bond);
3745 return MIN(max_idle, 1000);
3748 /* Updates flow table statistics given that the datapath just reported 'stats'
3749 * as 'subfacet''s statistics. */
3751 update_subfacet_stats(struct subfacet *subfacet,
3752 const struct dpif_flow_stats *stats)
3754 struct facet *facet = subfacet->facet;
3755 struct dpif_flow_stats diff;
3757 diff.tcp_flags = stats->tcp_flags;
3758 diff.used = stats->used;
3760 if (stats->n_packets >= subfacet->dp_packet_count) {
3761 diff.n_packets = stats->n_packets - subfacet->dp_packet_count;
3763 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
3767 if (stats->n_bytes >= subfacet->dp_byte_count) {
3768 diff.n_bytes = stats->n_bytes - subfacet->dp_byte_count;
3770 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
3774 facet->ofproto->n_hit += diff.n_packets;
3775 subfacet->dp_packet_count = stats->n_packets;
3776 subfacet->dp_byte_count = stats->n_bytes;
3777 subfacet_update_stats(subfacet, &diff);
3779 if (facet->accounted_bytes < facet->byte_count) {
3781 facet_account(facet);
3782 facet->accounted_bytes = facet->byte_count;
3786 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
3787 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
3789 delete_unexpected_flow(struct dpif_backer *backer,
3790 const struct nlattr *key, size_t key_len)
3792 if (!VLOG_DROP_WARN(&rl)) {
3796 odp_flow_key_format(key, key_len, &s);
3797 VLOG_WARN("unexpected flow: %s", ds_cstr(&s));
3801 COVERAGE_INC(facet_unexpected);
3802 dpif_flow_del(backer->dpif, key, key_len, NULL);
3805 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3807 * This function also pushes statistics updates to rules which each facet
3808 * resubmits into. Generally these statistics will be accurate. However, if a
3809 * facet changes the rule it resubmits into at some time in between
3810 * update_stats() runs, it is possible that statistics accrued to the
3811 * old rule will be incorrectly attributed to the new rule. This could be
3812 * avoided by calling update_stats() whenever rules are created or
3813 * deleted. However, the performance impact of making so many calls to the
3814 * datapath do not justify the benefit of having perfectly accurate statistics.
3816 * In addition, this function maintains per ofproto flow hit counts. The patch
3817 * port is not treated specially. e.g. A packet ingress from br0 patched into
3818 * br1 will increase the hit count of br0 by 1, however, does not affect
3819 * the hit or miss counts of br1.
3822 update_stats(struct dpif_backer *backer)
3824 const struct dpif_flow_stats *stats;
3825 struct dpif_flow_dump dump;
3826 const struct nlattr *key, *mask;
3827 size_t key_len, mask_len;
3829 dpif_flow_dump_start(&dump, backer->dpif);
3830 while (dpif_flow_dump_next(&dump, &key, &key_len,
3831 &mask, &mask_len, NULL, NULL, &stats)) {
3832 struct subfacet *subfacet;
3835 key_hash = odp_flow_key_hash(key, key_len);
3836 subfacet = subfacet_find(backer, key, key_len, key_hash);
3837 switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
3839 update_subfacet_stats(subfacet, stats);
3843 /* Stats are updated per-packet. */
3846 case SF_NOT_INSTALLED:
3848 delete_unexpected_flow(backer, key, key_len);
3853 dpif_flow_dump_done(&dump);
3855 update_moving_averages(backer);
3858 /* Calculates and returns the number of milliseconds of idle time after which
3859 * subfacets should expire from the datapath. When a subfacet expires, we fold
3860 * its statistics into its facet, and when a facet's last subfacet expires, we
3861 * fold its statistic into its rule. */
3863 subfacet_max_idle(const struct dpif_backer *backer)
3866 * Idle time histogram.
3868 * Most of the time a switch has a relatively small number of subfacets.
3869 * When this is the case we might as well keep statistics for all of them
3870 * in userspace and to cache them in the kernel datapath for performance as
3873 * As the number of subfacets increases, the memory required to maintain
3874 * statistics about them in userspace and in the kernel becomes
3875 * significant. However, with a large number of subfacets it is likely
3876 * that only a few of them are "heavy hitters" that consume a large amount
3877 * of bandwidth. At this point, only heavy hitters are worth caching in
3878 * the kernel and maintaining in userspaces; other subfacets we can
3881 * The technique used to compute the idle time is to build a histogram with
3882 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3883 * that is installed in the kernel gets dropped in the appropriate bucket.
3884 * After the histogram has been built, we compute the cutoff so that only
3885 * the most-recently-used 1% of subfacets (but at least
3886 * flow_eviction_threshold flows) are kept cached. At least
3887 * the most-recently-used bucket of subfacets is kept, so actually an
3888 * arbitrary number of subfacets can be kept in any given expiration run
3889 * (though the next run will delete most of those unless they receive
3892 * This requires a second pass through the subfacets, in addition to the
3893 * pass made by update_stats(), because the former function never looks at
3894 * uninstallable subfacets.
3896 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3897 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3898 int buckets[N_BUCKETS] = { 0 };
3899 int total, subtotal, bucket;
3900 struct subfacet *subfacet;
3904 total = hmap_count(&backer->subfacets);
3905 if (total <= flow_eviction_threshold) {
3906 return N_BUCKETS * BUCKET_WIDTH;
3909 /* Build histogram. */
3911 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3912 long long int idle = now - subfacet->used;
3913 int bucket = (idle <= 0 ? 0
3914 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3915 : (unsigned int) idle / BUCKET_WIDTH);
3919 /* Find the first bucket whose flows should be expired. */
3920 subtotal = bucket = 0;
3922 subtotal += buckets[bucket++];
3923 } while (bucket < N_BUCKETS &&
3924 subtotal < MAX(flow_eviction_threshold, total / 100));
3926 if (VLOG_IS_DBG_ENABLED()) {
3930 ds_put_cstr(&s, "keep");
3931 for (i = 0; i < N_BUCKETS; i++) {
3933 ds_put_cstr(&s, ", drop");
3936 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3939 VLOG_INFO("%s (msec:count)", ds_cstr(&s));
3943 return bucket * BUCKET_WIDTH;
3947 expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
3949 /* Cutoff time for most flows. */
3950 long long int normal_cutoff = time_msec() - dp_max_idle;
3952 /* We really want to keep flows for special protocols around, so use a more
3953 * conservative cutoff. */
3954 long long int special_cutoff = time_msec() - 10000;
3956 struct subfacet *subfacet, *next_subfacet;
3957 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
3961 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3962 &backer->subfacets) {
3963 long long int cutoff;
3965 cutoff = (subfacet->facet->xout.slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP
3969 if (subfacet->used < cutoff) {
3970 if (subfacet->path != SF_NOT_INSTALLED) {
3971 batch[n_batch++] = subfacet;
3972 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
3973 subfacet_destroy_batch(backer, batch, n_batch);
3977 subfacet_destroy(subfacet);
3983 subfacet_destroy_batch(backer, batch, n_batch);
3987 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3988 * then delete it entirely. */
3990 rule_expire(struct rule_dpif *rule)
3992 uint16_t idle_timeout, hard_timeout;
3996 if (rule->up.pending) {
3997 /* We'll have to expire it later. */
4001 ovs_mutex_lock(&rule->up.timeout_mutex);
4002 hard_timeout = rule->up.hard_timeout;
4003 idle_timeout = rule->up.idle_timeout;
4004 ovs_mutex_unlock(&rule->up.timeout_mutex);
4006 /* Has 'rule' expired? */
4008 if (hard_timeout && now > rule->up.modified + hard_timeout * 1000) {
4009 reason = OFPRR_HARD_TIMEOUT;
4010 } else if (idle_timeout && now > rule->up.used + idle_timeout * 1000) {
4011 reason = OFPRR_IDLE_TIMEOUT;
4016 COVERAGE_INC(ofproto_dpif_expired);
4017 ofproto_rule_expire(&rule->up, reason);
4022 /* Creates and returns a new facet based on 'miss'.
4024 * The caller must already have determined that no facet with an identical
4025 * 'miss->flow' exists in 'miss->ofproto'.
4027 * 'rule' and 'xout' must have been created based on 'miss'.
4029 * 'facet'' statistics are initialized based on 'stats'.
4031 * The facet will initially have no subfacets. The caller should create (at
4032 * least) one subfacet with subfacet_create(). */
4033 static struct facet *
4034 facet_create(const struct flow_miss *miss)
4036 struct ofproto_dpif *ofproto = miss->ofproto;
4037 struct facet *facet;
4040 facet = xzalloc(sizeof *facet);
4041 facet->ofproto = miss->ofproto;
4042 facet->used = miss->stats.used;
4043 facet->flow = miss->flow;
4044 facet->learn_rl = time_msec() + 500;
4046 list_init(&facet->subfacets);
4047 netflow_flow_init(&facet->nf_flow);
4048 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
4050 xlate_out_copy(&facet->xout, &miss->xout);
4052 match_init(&match, &facet->flow, &facet->xout.wc);
4053 cls_rule_init(&facet->cr, &match, OFP_DEFAULT_PRIORITY);
4054 ovs_rwlock_wrlock(&ofproto->facets.rwlock);
4055 classifier_insert(&ofproto->facets, &facet->cr);
4056 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4058 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4063 facet_free(struct facet *facet)
4066 xlate_out_uninit(&facet->xout);
4071 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4072 * 'packet', which arrived on 'in_port'. */
4074 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
4075 const struct nlattr *odp_actions, size_t actions_len,
4076 struct ofpbuf *packet)
4078 struct odputil_keybuf keybuf;
4082 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4083 odp_flow_key_from_flow(&key, flow,
4084 ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port));
4086 error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
4087 odp_actions, actions_len, packet);
4091 /* Remove 'facet' from its ofproto and free up the associated memory:
4093 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4094 * rule's statistics, via subfacet_uninstall().
4096 * - Removes 'facet' from its rule and from ofproto->facets.
4099 facet_remove(struct facet *facet)
4101 struct subfacet *subfacet, *next_subfacet;
4103 ovs_assert(!list_is_empty(&facet->subfacets));
4105 /* First uninstall all of the subfacets to get final statistics. */
4106 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4107 subfacet_uninstall(subfacet);
4110 /* Flush the final stats to the rule.
4112 * This might require us to have at least one subfacet around so that we
4113 * can use its actions for accounting in facet_account(), which is why we
4114 * have uninstalled but not yet destroyed the subfacets. */
4115 facet_flush_stats(facet);
4117 /* Now we're really all done so destroy everything. */
4118 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
4119 &facet->subfacets) {
4120 subfacet_destroy__(subfacet);
4122 ovs_rwlock_wrlock(&facet->ofproto->facets.rwlock);
4123 classifier_remove(&facet->ofproto->facets, &facet->cr);
4124 ovs_rwlock_unlock(&facet->ofproto->facets.rwlock);
4125 cls_rule_destroy(&facet->cr);
4129 /* Feed information from 'facet' back into the learning table to keep it in
4130 * sync with what is actually flowing through the datapath. */
4132 facet_learn(struct facet *facet)
4134 long long int now = time_msec();
4136 if (!facet->xout.has_fin_timeout && now < facet->learn_rl) {
4140 facet->learn_rl = now + 500;
4142 if (!facet->xout.has_learn
4143 && !facet->xout.has_normal
4144 && (!facet->xout.has_fin_timeout
4145 || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
4149 facet_push_stats(facet, true);
4153 facet_account(struct facet *facet)
4155 const struct nlattr *a;
4160 if (!facet->xout.has_normal || !facet->ofproto->has_bonded_bundles) {
4163 n_bytes = facet->byte_count - facet->accounted_bytes;
4165 /* This loop feeds byte counters to bond_account() for rebalancing to use
4166 * as a basis. We also need to track the actual VLAN on which the packet
4167 * is going to be sent to ensure that it matches the one passed to
4168 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4171 * We use the actions from an arbitrary subfacet because they should all
4172 * be equally valid for our purpose. */
4173 vlan_tci = facet->flow.vlan_tci;
4174 NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->xout.odp_actions.data,
4175 facet->xout.odp_actions.size) {
4176 const struct ovs_action_push_vlan *vlan;
4177 struct ofport_dpif *port;
4179 switch (nl_attr_type(a)) {
4180 case OVS_ACTION_ATTR_OUTPUT:
4181 port = get_odp_port(facet->ofproto, nl_attr_get_odp_port(a));
4182 if (port && port->bundle && port->bundle->bond) {
4183 bond_account(port->bundle->bond, &facet->flow,
4184 vlan_tci_to_vid(vlan_tci), n_bytes);
4188 case OVS_ACTION_ATTR_POP_VLAN:
4189 vlan_tci = htons(0);
4192 case OVS_ACTION_ATTR_PUSH_VLAN:
4193 vlan = nl_attr_get(a);
4194 vlan_tci = vlan->vlan_tci;
4200 /* Returns true if the only action for 'facet' is to send to the controller.
4201 * (We don't report NetFlow expiration messages for such facets because they
4202 * are just part of the control logic for the network, not real traffic). */
4204 facet_is_controller_flow(struct facet *facet)
4207 struct ofproto_dpif *ofproto = facet->ofproto;
4208 const struct ofpact *ofpacts;
4209 struct rule_dpif *rule;
4213 rule_dpif_lookup(ofproto, &facet->flow, NULL, &rule);
4214 ofpacts_len = rule->up.ofpacts_len;
4215 ofpacts = rule->up.ofpacts;
4216 is_controller = ofpacts_len > 0
4217 && ofpacts->type == OFPACT_CONTROLLER
4218 && ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len);
4219 rule_dpif_release(rule);
4220 return is_controller;
4225 /* Folds all of 'facet''s statistics into its rule. Also updates the
4226 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4227 * 'facet''s statistics in the datapath should have been zeroed and folded into
4228 * its packet and byte counts before this function is called. */
4230 facet_flush_stats(struct facet *facet)
4232 struct ofproto_dpif *ofproto = facet->ofproto;
4233 struct subfacet *subfacet;
4235 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4236 ovs_assert(!subfacet->dp_byte_count);
4237 ovs_assert(!subfacet->dp_packet_count);
4240 facet_push_stats(facet, false);
4241 if (facet->accounted_bytes < facet->byte_count) {
4242 facet_account(facet);
4243 facet->accounted_bytes = facet->byte_count;
4246 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
4247 struct ofexpired expired;
4248 expired.flow = facet->flow;
4249 expired.packet_count = facet->packet_count;
4250 expired.byte_count = facet->byte_count;
4251 expired.used = facet->used;
4252 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
4255 /* Reset counters to prevent double counting if 'facet' ever gets
4257 facet_reset_counters(facet);
4259 netflow_flow_clear(&facet->nf_flow);
4260 facet->tcp_flags = 0;
4263 /* Searches 'ofproto''s table of facets for one which would be responsible for
4264 * 'flow'. Returns it if found, otherwise a null pointer.
4266 * The returned facet might need revalidation; use facet_lookup_valid()
4267 * instead if that is important. */
4268 static struct facet *
4269 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
4271 struct cls_rule *cr;
4273 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4274 cr = classifier_lookup(&ofproto->facets, flow, NULL);
4275 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4276 return cr ? CONTAINER_OF(cr, struct facet, cr) : NULL;
4279 /* Searches 'ofproto''s table of facets for one capable that covers
4280 * 'flow'. Returns it if found, otherwise a null pointer.
4282 * The returned facet is guaranteed to be valid. */
4283 static struct facet *
4284 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
4286 struct facet *facet;
4288 facet = facet_find(ofproto, flow);
4290 && ofproto->backer->need_revalidate
4291 && !facet_revalidate(facet)) {
4299 facet_check_consistency(struct facet *facet)
4301 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
4303 struct xlate_out xout;
4304 struct xlate_in xin;
4306 struct rule_dpif *rule;
4309 /* Check the datapath actions for consistency. */
4310 rule_dpif_lookup(facet->ofproto, &facet->flow, NULL, &rule);
4311 xlate_in_init(&xin, facet->ofproto, &facet->flow, rule, 0, NULL);
4312 xlate_actions(&xin, &xout);
4313 rule_dpif_release(rule);
4315 ok = ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)
4316 && facet->xout.slow == xout.slow;
4317 if (!ok && !VLOG_DROP_WARN(&rl)) {
4318 struct ds s = DS_EMPTY_INITIALIZER;
4320 flow_format(&s, &facet->flow);
4321 ds_put_cstr(&s, ": inconsistency in facet");
4323 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4324 ds_put_cstr(&s, " (actions were: ");
4325 format_odp_actions(&s, facet->xout.odp_actions.data,
4326 facet->xout.odp_actions.size);
4327 ds_put_cstr(&s, ") (correct actions: ");
4328 format_odp_actions(&s, xout.odp_actions.data,
4329 xout.odp_actions.size);
4330 ds_put_char(&s, ')');
4333 if (facet->xout.slow != xout.slow) {
4334 ds_put_format(&s, " slow path incorrect. should be %d", xout.slow);
4339 xlate_out_uninit(&xout);
4344 /* Re-searches the classifier for 'facet':
4346 * - If the rule found is different from 'facet''s current rule, moves
4347 * 'facet' to the new rule and recompiles its actions.
4349 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4350 * where it is and recompiles its actions anyway.
4352 * - If any of 'facet''s subfacets correspond to a new flow according to
4353 * xlate_receive(), 'facet' is removed.
4355 * Returns true if 'facet' is still valid. False if 'facet' was removed. */
4357 facet_revalidate(struct facet *facet)
4359 struct ofproto_dpif *ofproto = facet->ofproto;
4360 struct rule_dpif *new_rule;
4361 struct subfacet *subfacet;
4362 struct flow_wildcards wc;
4363 struct xlate_out xout;
4364 struct xlate_in xin;
4366 COVERAGE_INC(facet_revalidate);
4368 /* Check that child subfacets still correspond to this facet. Tunnel
4369 * configuration changes could cause a subfacet's OpenFlow in_port to
4371 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4372 struct ofproto_dpif *recv_ofproto;
4373 struct flow recv_flow;
4376 error = xlate_receive(ofproto->backer, NULL, subfacet->key,
4377 subfacet->key_len, &recv_flow, NULL,
4378 &recv_ofproto, NULL);
4380 || recv_ofproto != ofproto
4381 || facet != facet_find(ofproto, &recv_flow)) {
4382 facet_remove(facet);
4387 flow_wildcards_init_catchall(&wc);
4388 rule_dpif_lookup(ofproto, &facet->flow, &wc, &new_rule);
4390 /* Calculate new datapath actions.
4392 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4393 * emit a NetFlow expiration and, if so, we need to have the old state
4394 * around to properly compose it. */
4395 xlate_in_init(&xin, ofproto, &facet->flow, new_rule, 0, NULL);
4396 xlate_actions(&xin, &xout);
4397 flow_wildcards_or(&xout.wc, &xout.wc, &wc);
4399 /* A facet's slow path reason should only change under dramatic
4400 * circumstances. Rather than try to update everything, it's simpler to
4401 * remove the facet and start over.
4403 * More importantly, if a facet's wildcards change, it will be relatively
4404 * difficult to figure out if its subfacets still belong to it, and if not
4405 * which facet they may belong to. Again, to avoid the complexity, we
4406 * simply give up instead. */
4407 if (facet->xout.slow != xout.slow
4408 || memcmp(&facet->xout.wc, &xout.wc, sizeof xout.wc)) {
4409 facet_remove(facet);
4410 xlate_out_uninit(&xout);
4411 rule_dpif_release(new_rule);
4415 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4416 LIST_FOR_EACH(subfacet, list_node, &facet->subfacets) {
4417 if (subfacet->path == SF_FAST_PATH) {
4418 struct dpif_flow_stats stats;
4420 subfacet_install(subfacet, &xout.odp_actions, &stats);
4421 subfacet_update_stats(subfacet, &stats);
4425 facet_flush_stats(facet);
4427 ofpbuf_clear(&facet->xout.odp_actions);
4428 ofpbuf_put(&facet->xout.odp_actions, xout.odp_actions.data,
4429 xout.odp_actions.size);
4432 /* Update 'facet' now that we've taken care of all the old state. */
4433 facet->xout.slow = xout.slow;
4434 facet->xout.has_learn = xout.has_learn;
4435 facet->xout.has_normal = xout.has_normal;
4436 facet->xout.has_fin_timeout = xout.has_fin_timeout;
4437 facet->xout.nf_output_iface = xout.nf_output_iface;
4438 facet->xout.mirrors = xout.mirrors;
4439 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4440 facet->used = MAX(facet->used, new_rule->up.created);
4442 xlate_out_uninit(&xout);
4443 rule_dpif_release(new_rule);
4448 facet_reset_counters(struct facet *facet)
4450 facet->packet_count = 0;
4451 facet->byte_count = 0;
4452 facet->prev_packet_count = 0;
4453 facet->prev_byte_count = 0;
4454 facet->accounted_bytes = 0;
4458 flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
4459 struct dpif_flow_stats *stats, bool may_learn)
4461 struct ofport_dpif *in_port;
4462 struct rule_dpif *rule;
4463 struct xlate_in xin;
4465 in_port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4466 if (in_port && in_port->is_tunnel) {
4467 netdev_vport_inc_rx(in_port->up.netdev, stats);
4470 rule_dpif_lookup(ofproto, flow, NULL, &rule);
4471 rule_dpif_credit_stats(rule, stats);
4472 xlate_in_init(&xin, ofproto, flow, rule, stats->tcp_flags, NULL);
4473 xin.resubmit_stats = stats;
4474 xin.may_learn = may_learn;
4475 xlate_actions_for_side_effects(&xin);
4476 rule_dpif_release(rule);
4480 facet_push_stats(struct facet *facet, bool may_learn)
4482 struct dpif_flow_stats stats;
4484 ovs_assert(facet->packet_count >= facet->prev_packet_count);
4485 ovs_assert(facet->byte_count >= facet->prev_byte_count);
4486 ovs_assert(facet->used >= facet->prev_used);
4488 stats.n_packets = facet->packet_count - facet->prev_packet_count;
4489 stats.n_bytes = facet->byte_count - facet->prev_byte_count;
4490 stats.used = facet->used;
4491 stats.tcp_flags = facet->tcp_flags;
4493 if (may_learn || stats.n_packets || facet->used > facet->prev_used) {
4494 facet->prev_packet_count = facet->packet_count;
4495 facet->prev_byte_count = facet->byte_count;
4496 facet->prev_used = facet->used;
4498 netflow_flow_update_time(facet->ofproto->netflow, &facet->nf_flow,
4500 netflow_flow_update_flags(&facet->nf_flow, facet->tcp_flags);
4501 mirror_update_stats(facet->ofproto->mbridge, facet->xout.mirrors,
4502 stats.n_packets, stats.n_bytes);
4503 flow_push_stats(facet->ofproto, &facet->flow, &stats, may_learn);
4508 push_all_stats__(bool run_fast)
4510 static long long int rl = LLONG_MIN;
4511 struct ofproto_dpif *ofproto;
4513 if (time_msec() < rl) {
4517 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
4518 struct cls_cursor cursor;
4519 struct facet *facet;
4521 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4522 cls_cursor_init(&cursor, &ofproto->facets, NULL);
4523 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
4524 facet_push_stats(facet, false);
4529 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4532 rl = time_msec() + 100;
4536 push_all_stats(void)
4538 push_all_stats__(true);
4542 rule_dpif_credit_stats(struct rule_dpif *rule,
4543 const struct dpif_flow_stats *stats)
4545 ovs_mutex_lock(&rule->stats_mutex);
4546 rule->packet_count += stats->n_packets;
4547 rule->byte_count += stats->n_bytes;
4548 rule->up.used = MAX(rule->up.used, stats->used);
4549 ovs_mutex_unlock(&rule->stats_mutex);
4553 rule_dpif_fail_open(const struct rule_dpif *rule)
4555 return rule->up.cr.priority == FAIL_OPEN_PRIORITY;
4559 rule_dpif_get_flow_cookie(const struct rule_dpif *rule)
4561 return rule->up.flow_cookie;
4565 rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
4566 uint16_t hard_timeout)
4568 ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout);
4572 rule_dpif_get_actions(const struct rule_dpif *rule,
4573 const struct ofpact **ofpacts, size_t *ofpacts_len)
4575 *ofpacts = rule->up.ofpacts;
4576 *ofpacts_len = rule->up.ofpacts_len;
4581 static struct subfacet *
4582 subfacet_find(struct dpif_backer *backer, const struct nlattr *key,
4583 size_t key_len, uint32_t key_hash)
4585 struct subfacet *subfacet;
4587 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
4588 &backer->subfacets) {
4589 if (subfacet->key_len == key_len
4590 && !memcmp(key, subfacet->key, key_len)) {
4598 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4599 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
4600 * existing subfacet if there is one, otherwise creates and returns a
4602 static struct subfacet *
4603 subfacet_create(struct facet *facet, struct flow_miss *miss)
4605 struct dpif_backer *backer = miss->ofproto->backer;
4606 enum odp_key_fitness key_fitness = miss->key_fitness;
4607 const struct nlattr *key = miss->key;
4608 size_t key_len = miss->key_len;
4610 struct subfacet *subfacet;
4612 key_hash = odp_flow_key_hash(key, key_len);
4614 if (list_is_empty(&facet->subfacets)) {
4615 subfacet = &facet->one_subfacet;
4617 subfacet = subfacet_find(backer, key, key_len, key_hash);
4619 if (subfacet->facet == facet) {
4623 /* This shouldn't happen. */
4624 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
4625 subfacet_destroy(subfacet);
4628 subfacet = xmalloc(sizeof *subfacet);
4631 hmap_insert(&backer->subfacets, &subfacet->hmap_node, key_hash);
4632 list_push_back(&facet->subfacets, &subfacet->list_node);
4633 subfacet->facet = facet;
4634 subfacet->key_fitness = key_fitness;
4635 subfacet->key = xmemdup(key, key_len);
4636 subfacet->key_len = key_len;
4637 subfacet->used = miss->stats.used;
4638 subfacet->created = subfacet->used;
4639 subfacet->dp_packet_count = 0;
4640 subfacet->dp_byte_count = 0;
4641 subfacet->path = SF_NOT_INSTALLED;
4642 subfacet->backer = backer;
4644 backer->subfacet_add_count++;
4648 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4649 * its facet within 'ofproto', and frees it. */
4651 subfacet_destroy__(struct subfacet *subfacet)
4653 struct facet *facet = subfacet->facet;
4654 struct ofproto_dpif *ofproto = facet->ofproto;
4656 /* Update ofproto stats before uninstall the subfacet. */
4657 ofproto->backer->subfacet_del_count++;
4659 subfacet_uninstall(subfacet);
4660 hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
4661 list_remove(&subfacet->list_node);
4662 free(subfacet->key);
4663 if (subfacet != &facet->one_subfacet) {
4668 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4669 * last remaining subfacet in its facet destroys the facet too. */
4671 subfacet_destroy(struct subfacet *subfacet)
4673 struct facet *facet = subfacet->facet;
4675 if (list_is_singleton(&facet->subfacets)) {
4676 /* facet_remove() needs at least one subfacet (it will remove it). */
4677 facet_remove(facet);
4679 subfacet_destroy__(subfacet);
4684 subfacet_destroy_batch(struct dpif_backer *backer,
4685 struct subfacet **subfacets, int n)
4687 struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
4688 struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
4689 struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
4692 for (i = 0; i < n; i++) {
4693 ops[i].type = DPIF_OP_FLOW_DEL;
4694 ops[i].u.flow_del.key = subfacets[i]->key;
4695 ops[i].u.flow_del.key_len = subfacets[i]->key_len;
4696 ops[i].u.flow_del.stats = &stats[i];
4700 dpif_operate(backer->dpif, opsp, n);
4701 for (i = 0; i < n; i++) {
4702 subfacet_reset_dp_stats(subfacets[i], &stats[i]);
4703 subfacets[i]->path = SF_NOT_INSTALLED;
4704 subfacet_destroy(subfacets[i]);
4709 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4710 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4711 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4712 * since 'subfacet' was last updated.
4714 * Returns 0 if successful, otherwise a positive errno value. */
4716 subfacet_install(struct subfacet *subfacet, const struct ofpbuf *odp_actions,
4717 struct dpif_flow_stats *stats)
4719 struct facet *facet = subfacet->facet;
4720 enum subfacet_path path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
4721 const struct nlattr *actions = odp_actions->data;
4722 size_t actions_len = odp_actions->size;
4723 struct odputil_keybuf maskbuf;
4726 uint64_t slow_path_stub[128 / 8];
4727 enum dpif_flow_put_flags flags;
4730 flags = subfacet->path == SF_NOT_INSTALLED ? DPIF_FP_CREATE
4733 flags |= DPIF_FP_ZERO_STATS;
4736 if (path == SF_SLOW_PATH) {
4737 compose_slow_path(facet->ofproto, &facet->flow, facet->xout.slow,
4738 slow_path_stub, sizeof slow_path_stub,
4739 &actions, &actions_len);
4742 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
4743 if (enable_megaflows) {
4744 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
4745 &facet->flow, UINT32_MAX);
4748 ret = dpif_flow_put(subfacet->backer->dpif, flags, subfacet->key,
4749 subfacet->key_len, mask.data, mask.size,
4750 actions, actions_len, stats);
4753 subfacet_reset_dp_stats(subfacet, stats);
4757 COVERAGE_INC(subfacet_install_fail);
4759 subfacet->path = path;
4764 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4766 subfacet_uninstall(struct subfacet *subfacet)
4768 if (subfacet->path != SF_NOT_INSTALLED) {
4769 struct ofproto_dpif *ofproto = subfacet->facet->ofproto;
4770 struct dpif_flow_stats stats;
4773 error = dpif_flow_del(ofproto->backer->dpif, subfacet->key,
4774 subfacet->key_len, &stats);
4775 subfacet_reset_dp_stats(subfacet, &stats);
4777 subfacet_update_stats(subfacet, &stats);
4779 subfacet->path = SF_NOT_INSTALLED;
4781 ovs_assert(subfacet->dp_packet_count == 0);
4782 ovs_assert(subfacet->dp_byte_count == 0);
4786 /* Resets 'subfacet''s datapath statistics counters. This should be called
4787 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4788 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4789 * was reset in the datapath. 'stats' will be modified to include only
4790 * statistics new since 'subfacet' was last updated. */
4792 subfacet_reset_dp_stats(struct subfacet *subfacet,
4793 struct dpif_flow_stats *stats)
4796 && subfacet->dp_packet_count <= stats->n_packets
4797 && subfacet->dp_byte_count <= stats->n_bytes) {
4798 stats->n_packets -= subfacet->dp_packet_count;
4799 stats->n_bytes -= subfacet->dp_byte_count;
4802 subfacet->dp_packet_count = 0;
4803 subfacet->dp_byte_count = 0;
4806 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4808 * Because of the meaning of a subfacet's counters, it only makes sense to do
4809 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4810 * represents a packet that was sent by hand or if it represents statistics
4811 * that have been cleared out of the datapath. */
4813 subfacet_update_stats(struct subfacet *subfacet,
4814 const struct dpif_flow_stats *stats)
4816 if (stats->n_packets || stats->used > subfacet->used) {
4817 struct facet *facet = subfacet->facet;
4819 subfacet->used = MAX(subfacet->used, stats->used);
4820 facet->used = MAX(facet->used, stats->used);
4821 facet->packet_count += stats->n_packets;
4822 facet->byte_count += stats->n_bytes;
4823 facet->tcp_flags |= stats->tcp_flags;
4829 /* Lookup 'flow' in 'ofproto''s classifier. If 'wc' is non-null, sets
4830 * the fields that were relevant as part of the lookup. */
4832 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4833 struct flow_wildcards *wc, struct rule_dpif **rule)
4835 struct ofport_dpif *port;
4837 if (rule_dpif_lookup_in_table(ofproto, flow, wc, 0, rule)) {
4840 port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4842 VLOG_WARN_RL(&rl, "packet-in on unknown OpenFlow port %"PRIu16,
4843 flow->in_port.ofp_port);
4846 choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
4847 ofproto->no_packet_in_rule, rule);
4851 rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
4852 const struct flow *flow, struct flow_wildcards *wc,
4853 uint8_t table_id, struct rule_dpif **rule)
4854 OVS_TRY_RDLOCK(true, (*rule)->up.rwlock)
4856 struct cls_rule *cls_rule;
4857 struct classifier *cls;
4861 if (table_id >= N_TABLES) {
4866 memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
4867 wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
4870 cls = &ofproto->up.tables[table_id].cls;
4871 ovs_rwlock_rdlock(&cls->rwlock);
4872 frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
4873 if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4874 /* We must pretend that transport ports are unavailable. */
4875 struct flow ofpc_normal_flow = *flow;
4876 ofpc_normal_flow.tp_src = htons(0);
4877 ofpc_normal_flow.tp_dst = htons(0);
4878 cls_rule = classifier_lookup(cls, &ofpc_normal_flow, wc);
4879 } else if (frag && ofproto->up.frag_handling == OFPC_FRAG_DROP) {
4880 cls_rule = &ofproto->drop_frags_rule->up.cr;
4882 flow_wildcards_init_exact(wc);
4885 cls_rule = classifier_lookup(cls, flow, wc);
4888 *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
4889 if (*rule && ovs_rwlock_tryrdlock(&(*rule)->up.rwlock)) {
4890 /* The rule is in the process of being removed. Best we can do is
4891 * pretend it isn't there. */
4894 ovs_rwlock_unlock(&cls->rwlock);
4896 return *rule != NULL;
4899 /* Given a port configuration (specified as zero if there's no port), chooses
4900 * which of 'miss_rule' and 'no_packet_in_rule' should be used in case of a
4901 * flow table miss. */
4903 choose_miss_rule(enum ofputil_port_config config, struct rule_dpif *miss_rule,
4904 struct rule_dpif *no_packet_in_rule, struct rule_dpif **rule)
4905 OVS_NO_THREAD_SAFETY_ANALYSIS
4907 *rule = config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
4908 ovs_rwlock_rdlock(&(*rule)->up.rwlock);
4912 rule_dpif_release(struct rule_dpif *rule)
4913 OVS_NO_THREAD_SAFETY_ANALYSIS
4916 ovs_rwlock_unlock(&rule->up.rwlock);
4921 complete_operation(struct rule_dpif *rule)
4923 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4925 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
4927 struct dpif_completion *c = xmalloc(sizeof *c);
4928 c->op = rule->up.pending;
4929 list_push_back(&ofproto->completions, &c->list_node);
4931 ofoperation_complete(rule->up.pending, 0);
4935 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
4937 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
4940 static struct rule *
4943 struct rule_dpif *rule = xmalloc(sizeof *rule);
4948 rule_dealloc(struct rule *rule_)
4950 struct rule_dpif *rule = rule_dpif_cast(rule_);
4955 rule_construct(struct rule *rule_)
4957 struct rule_dpif *rule = rule_dpif_cast(rule_);
4958 ovs_mutex_init(&rule->stats_mutex);
4959 ovs_mutex_lock(&rule->stats_mutex);
4960 rule->packet_count = 0;
4961 rule->byte_count = 0;
4962 ovs_mutex_unlock(&rule->stats_mutex);
4967 rule_insert(struct rule *rule_)
4969 struct rule_dpif *rule = rule_dpif_cast(rule_);
4970 complete_operation(rule);
4974 rule_delete(struct rule *rule_)
4976 struct rule_dpif *rule = rule_dpif_cast(rule_);
4977 complete_operation(rule);
4981 rule_destruct(struct rule *rule_)
4983 struct rule_dpif *rule = rule_dpif_cast(rule_);
4984 ovs_mutex_destroy(&rule->stats_mutex);
4988 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4990 struct rule_dpif *rule = rule_dpif_cast(rule_);
4992 /* push_all_stats() can handle flow misses which, when using the learn
4993 * action, can cause rules to be added and deleted. This can corrupt our
4994 * caller's datastructures which assume that rule_get_stats() doesn't have
4995 * an impact on the flow table. To be safe, we disable miss handling. */
4996 push_all_stats__(false);
4998 /* Start from historical data for 'rule' itself that are no longer tracked
4999 * in facets. This counts, for example, facets that have expired. */
5000 ovs_mutex_lock(&rule->stats_mutex);
5001 *packets = rule->packet_count;
5002 *bytes = rule->byte_count;
5003 ovs_mutex_unlock(&rule->stats_mutex);
5007 rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
5008 struct ofpbuf *packet)
5010 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5011 struct dpif_flow_stats stats;
5012 struct xlate_out xout;
5013 struct xlate_in xin;
5015 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5016 rule_dpif_credit_stats(rule, &stats);
5018 xlate_in_init(&xin, ofproto, flow, rule, stats.tcp_flags, packet);
5019 xin.resubmit_stats = &stats;
5020 xlate_actions(&xin, &xout);
5022 execute_odp_actions(ofproto, flow, xout.odp_actions.data,
5023 xout.odp_actions.size, packet);
5025 xlate_out_uninit(&xout);
5029 rule_execute(struct rule *rule, const struct flow *flow,
5030 struct ofpbuf *packet)
5032 rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
5033 ofpbuf_delete(packet);
5038 rule_modify_actions(struct rule *rule_, bool reset_counters)
5040 struct rule_dpif *rule = rule_dpif_cast(rule_);
5042 if (reset_counters) {
5043 ovs_mutex_lock(&rule->stats_mutex);
5044 rule->packet_count = 0;
5045 rule->byte_count = 0;
5046 ovs_mutex_unlock(&rule->stats_mutex);
5049 complete_operation(rule);
5052 /* Sends 'packet' out 'ofport'.
5053 * May modify 'packet'.
5054 * Returns 0 if successful, otherwise a positive errno value. */
5056 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
5058 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
5059 uint64_t odp_actions_stub[1024 / 8];
5060 struct ofpbuf key, odp_actions;
5061 struct dpif_flow_stats stats;
5062 struct odputil_keybuf keybuf;
5063 struct ofpact_output output;
5064 struct xlate_out xout;
5065 struct xlate_in xin;
5067 union flow_in_port in_port_;
5070 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
5071 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5073 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
5074 in_port_.ofp_port = OFPP_NONE;
5075 flow_extract(packet, 0, 0, NULL, &in_port_, &flow);
5076 odp_flow_key_from_flow(&key, &flow, ofp_port_to_odp_port(ofproto,
5078 dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
5080 ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
5081 output.port = ofport->up.ofp_port;
5084 xlate_in_init(&xin, ofproto, &flow, NULL, 0, packet);
5085 xin.ofpacts_len = sizeof output;
5086 xin.ofpacts = &output.ofpact;
5087 xin.resubmit_stats = &stats;
5088 xlate_actions(&xin, &xout);
5090 error = dpif_execute(ofproto->backer->dpif,
5092 xout.odp_actions.data, xout.odp_actions.size,
5094 xlate_out_uninit(&xout);
5097 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %s (%s)",
5098 ofproto->up.name, netdev_get_name(ofport->up.netdev),
5099 ovs_strerror(error));
5102 ofproto->stats.tx_packets++;
5103 ofproto->stats.tx_bytes += packet->size;
5107 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5108 * The action will state 'slow' as the reason that the action is in the slow
5109 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5110 * dump-flows" output to see why a flow is in the slow path.)
5112 * The 'stub_size' bytes in 'stub' will be used to store the action.
5113 * 'stub_size' must be large enough for the action.
5115 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5118 compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
5119 enum slow_path_reason slow,
5120 uint64_t *stub, size_t stub_size,
5121 const struct nlattr **actionsp, size_t *actions_lenp)
5123 union user_action_cookie cookie;
5126 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
5127 cookie.slow_path.unused = 0;
5128 cookie.slow_path.reason = slow;
5130 ofpbuf_use_stack(&buf, stub, stub_size);
5131 if (slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP | SLOW_STP)) {
5132 uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif,
5134 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5136 odp_port_t odp_port;
5139 odp_port = ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port);
5140 pid = dpif_port_get_pid(ofproto->backer->dpif, odp_port);
5141 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5143 *actionsp = buf.data;
5144 *actions_lenp = buf.size;
5148 set_frag_handling(struct ofproto *ofproto_,
5149 enum ofp_config_flags frag_handling)
5151 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5152 if (frag_handling != OFPC_FRAG_REASM) {
5153 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5161 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5162 const struct flow *flow,
5163 const struct ofpact *ofpacts, size_t ofpacts_len)
5165 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5166 struct odputil_keybuf keybuf;
5167 struct dpif_flow_stats stats;
5168 struct xlate_out xout;
5169 struct xlate_in xin;
5173 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5174 odp_flow_key_from_flow(&key, flow,
5175 ofp_port_to_odp_port(ofproto,
5176 flow->in_port.ofp_port));
5178 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5180 xlate_in_init(&xin, ofproto, flow, NULL, stats.tcp_flags, packet);
5181 xin.resubmit_stats = &stats;
5182 xin.ofpacts_len = ofpacts_len;
5183 xin.ofpacts = ofpacts;
5185 xlate_actions(&xin, &xout);
5186 dpif_execute(ofproto->backer->dpif, key.data, key.size,
5187 xout.odp_actions.data, xout.odp_actions.size, packet);
5188 xlate_out_uninit(&xout);
5196 set_netflow(struct ofproto *ofproto_,
5197 const struct netflow_options *netflow_options)
5199 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5201 if (netflow_options) {
5202 if (!ofproto->netflow) {
5203 ofproto->netflow = netflow_create();
5204 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5206 return netflow_set_options(ofproto->netflow, netflow_options);
5207 } else if (ofproto->netflow) {
5208 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5209 netflow_destroy(ofproto->netflow);
5210 ofproto->netflow = NULL;
5217 get_netflow_ids(const struct ofproto *ofproto_,
5218 uint8_t *engine_type, uint8_t *engine_id)
5220 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5222 dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
5226 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5228 if (!facet_is_controller_flow(facet) &&
5229 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5230 struct subfacet *subfacet;
5231 struct ofexpired expired;
5233 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5234 if (subfacet->path == SF_FAST_PATH) {
5235 struct dpif_flow_stats stats;
5237 subfacet_install(subfacet, &facet->xout.odp_actions,
5239 subfacet_update_stats(subfacet, &stats);
5243 expired.flow = facet->flow;
5244 expired.packet_count = facet->packet_count;
5245 expired.byte_count = facet->byte_count;
5246 expired.used = facet->used;
5247 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5252 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5254 struct cls_cursor cursor;
5255 struct facet *facet;
5257 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5258 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5259 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5260 send_active_timeout(ofproto, facet);
5262 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5265 static struct ofproto_dpif *
5266 ofproto_dpif_lookup(const char *name)
5268 struct ofproto_dpif *ofproto;
5270 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5271 hash_string(name, 0), &all_ofproto_dpifs) {
5272 if (!strcmp(ofproto->up.name, name)) {
5280 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5281 const char *argv[], void *aux OVS_UNUSED)
5283 struct ofproto_dpif *ofproto;
5286 ofproto = ofproto_dpif_lookup(argv[1]);
5288 unixctl_command_reply_error(conn, "no such bridge");
5291 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5292 mac_learning_flush(ofproto->ml);
5293 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5295 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5296 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5297 mac_learning_flush(ofproto->ml);
5298 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5302 unixctl_command_reply(conn, "table successfully flushed");
5305 static struct ofport_dpif *
5306 ofbundle_get_a_port(const struct ofbundle *bundle)
5308 return CONTAINER_OF(list_front(&bundle->ports), struct ofport_dpif,
5313 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5314 const char *argv[], void *aux OVS_UNUSED)
5316 struct ds ds = DS_EMPTY_INITIALIZER;
5317 const struct ofproto_dpif *ofproto;
5318 const struct mac_entry *e;
5320 ofproto = ofproto_dpif_lookup(argv[1]);
5322 unixctl_command_reply_error(conn, "no such bridge");
5326 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5327 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
5328 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5329 struct ofbundle *bundle = e->port.p;
5330 char name[OFP_MAX_PORT_NAME_LEN];
5332 ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
5334 ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" %3d\n",
5335 name, e->vlan, ETH_ADDR_ARGS(e->mac),
5336 mac_entry_age(ofproto->ml, e));
5338 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5339 unixctl_command_reply(conn, ds_cstr(&ds));
5344 struct xlate_out xout;
5345 struct xlate_in xin;
5351 trace_format_rule(struct ds *result, int level, const struct rule_dpif *rule)
5353 ds_put_char_multiple(result, '\t', level);
5355 ds_put_cstr(result, "No match\n");
5359 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5360 rule ? rule->up.table_id : 0, ntohll(rule->up.flow_cookie));
5361 cls_rule_format(&rule->up.cr, result);
5362 ds_put_char(result, '\n');
5364 ds_put_char_multiple(result, '\t', level);
5365 ds_put_cstr(result, "OpenFlow ");
5366 ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
5367 ds_put_char(result, '\n');
5371 trace_format_flow(struct ds *result, int level, const char *title,
5372 struct trace_ctx *trace)
5374 ds_put_char_multiple(result, '\t', level);
5375 ds_put_format(result, "%s: ", title);
5376 if (flow_equal(&trace->xin.flow, &trace->flow)) {
5377 ds_put_cstr(result, "unchanged");
5379 flow_format(result, &trace->xin.flow);
5380 trace->flow = trace->xin.flow;
5382 ds_put_char(result, '\n');
5386 trace_format_regs(struct ds *result, int level, const char *title,
5387 struct trace_ctx *trace)
5391 ds_put_char_multiple(result, '\t', level);
5392 ds_put_format(result, "%s:", title);
5393 for (i = 0; i < FLOW_N_REGS; i++) {
5394 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
5396 ds_put_char(result, '\n');
5400 trace_format_odp(struct ds *result, int level, const char *title,
5401 struct trace_ctx *trace)
5403 struct ofpbuf *odp_actions = &trace->xout.odp_actions;
5405 ds_put_char_multiple(result, '\t', level);
5406 ds_put_format(result, "%s: ", title);
5407 format_odp_actions(result, odp_actions->data, odp_actions->size);
5408 ds_put_char(result, '\n');
5412 trace_resubmit(struct xlate_in *xin, struct rule_dpif *rule, int recurse)
5414 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5415 struct ds *result = trace->result;
5417 ds_put_char(result, '\n');
5418 trace_format_flow(result, recurse + 1, "Resubmitted flow", trace);
5419 trace_format_regs(result, recurse + 1, "Resubmitted regs", trace);
5420 trace_format_odp(result, recurse + 1, "Resubmitted odp", trace);
5421 trace_format_rule(result, recurse + 1, rule);
5425 trace_report(struct xlate_in *xin, const char *s, int recurse)
5427 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5428 struct ds *result = trace->result;
5430 ds_put_char_multiple(result, '\t', recurse);
5431 ds_put_cstr(result, s);
5432 ds_put_char(result, '\n');
5436 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5437 void *aux OVS_UNUSED)
5439 const struct dpif_backer *backer;
5440 struct ofproto_dpif *ofproto;
5441 struct ofpbuf odp_key, odp_mask;
5442 struct ofpbuf *packet;
5450 ofpbuf_init(&odp_key, 0);
5451 ofpbuf_init(&odp_mask, 0);
5453 /* Handle "-generate" or a hex string as the last argument. */
5454 if (!strcmp(argv[argc - 1], "-generate")) {
5455 packet = ofpbuf_new(0);
5458 const char *error = eth_from_hex(argv[argc - 1], &packet);
5461 } else if (argc == 4) {
5462 /* The 3-argument form must end in "-generate' or a hex string. */
5463 unixctl_command_reply_error(conn, error);
5468 /* Parse the flow and determine whether a datapath or
5469 * bridge is specified. If function odp_flow_key_from_string()
5470 * returns 0, the flow is a odp_flow. If function
5471 * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
5472 if (!odp_flow_from_string(argv[argc - 1], NULL, &odp_key, &odp_mask)) {
5473 /* If the odp_flow is the second argument,
5474 * the datapath name is the first argument. */
5476 const char *dp_type;
5477 if (!strncmp(argv[1], "ovs-", 4)) {
5478 dp_type = argv[1] + 4;
5482 backer = shash_find_data(&all_dpif_backers, dp_type);
5484 unixctl_command_reply_error(conn, "Cannot find datapath "
5489 /* No datapath name specified, so there should be only one
5491 struct shash_node *node;
5492 if (shash_count(&all_dpif_backers) != 1) {
5493 unixctl_command_reply_error(conn, "Must specify datapath "
5494 "name, there is more than one type of datapath");
5497 node = shash_first(&all_dpif_backers);
5498 backer = node->data;
5501 if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, &flow,
5502 NULL, &ofproto, NULL)) {
5503 unixctl_command_reply_error(conn, "Invalid datapath flow");
5506 ds_put_format(&result, "Bridge: %s\n", ofproto->up.name);
5507 } else if (!parse_ofp_exact_flow(&flow, argv[argc - 1])) {
5509 unixctl_command_reply_error(conn, "Must specify bridge name");
5513 ofproto = ofproto_dpif_lookup(argv[1]);
5515 unixctl_command_reply_error(conn, "Unknown bridge name");
5519 unixctl_command_reply_error(conn, "Bad flow syntax");
5523 /* Generate a packet, if requested. */
5525 if (!packet->size) {
5526 flow_compose(packet, &flow);
5528 union flow_in_port in_port_;
5530 in_port_ = flow.in_port;
5531 ds_put_cstr(&result, "Packet: ");
5532 s = ofp_packet_to_string(packet->data, packet->size);
5533 ds_put_cstr(&result, s);
5536 /* Use the metadata from the flow and the packet argument
5537 * to reconstruct the flow. */
5538 flow_extract(packet, flow.skb_priority, flow.pkt_mark, NULL,
5543 ofproto_trace(ofproto, &flow, packet, &result);
5544 unixctl_command_reply(conn, ds_cstr(&result));
5547 ds_destroy(&result);
5548 ofpbuf_delete(packet);
5549 ofpbuf_uninit(&odp_key);
5550 ofpbuf_uninit(&odp_mask);
5554 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
5555 const struct ofpbuf *packet, struct ds *ds)
5557 struct rule_dpif *rule;
5558 struct flow_wildcards wc;
5560 ds_put_cstr(ds, "Flow: ");
5561 flow_format(ds, flow);
5562 ds_put_char(ds, '\n');
5564 flow_wildcards_init_catchall(&wc);
5565 rule_dpif_lookup(ofproto, flow, &wc, &rule);
5567 trace_format_rule(ds, 0, rule);
5568 if (rule == ofproto->miss_rule) {
5569 ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
5570 } else if (rule == ofproto->no_packet_in_rule) {
5571 ds_put_cstr(ds, "\nNo match, packets dropped because "
5572 "OFPPC_NO_PACKET_IN is set on in_port.\n");
5573 } else if (rule == ofproto->drop_frags_rule) {
5574 ds_put_cstr(ds, "\nPackets dropped because they are IP fragments "
5575 "and the fragment handling mode is \"drop\".\n");
5579 uint64_t odp_actions_stub[1024 / 8];
5580 struct ofpbuf odp_actions;
5581 struct trace_ctx trace;
5585 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
5588 ofpbuf_use_stub(&odp_actions,
5589 odp_actions_stub, sizeof odp_actions_stub);
5590 xlate_in_init(&trace.xin, ofproto, flow, rule, tcp_flags, packet);
5591 trace.xin.resubmit_hook = trace_resubmit;
5592 trace.xin.report_hook = trace_report;
5594 xlate_actions(&trace.xin, &trace.xout);
5595 flow_wildcards_or(&trace.xout.wc, &trace.xout.wc, &wc);
5597 ds_put_char(ds, '\n');
5598 trace_format_flow(ds, 0, "Final flow", &trace);
5600 match_init(&match, flow, &trace.xout.wc);
5601 ds_put_cstr(ds, "Relevant fields: ");
5602 match_format(&match, ds, OFP_DEFAULT_PRIORITY);
5603 ds_put_char(ds, '\n');
5605 ds_put_cstr(ds, "Datapath actions: ");
5606 format_odp_actions(ds, trace.xout.odp_actions.data,
5607 trace.xout.odp_actions.size);
5609 if (trace.xout.slow) {
5610 ds_put_cstr(ds, "\nThis flow is handled by the userspace "
5611 "slow path because it:");
5612 switch (trace.xout.slow) {
5614 ds_put_cstr(ds, "\n\t- Consists of CFM packets.");
5617 ds_put_cstr(ds, "\n\t- Consists of LACP packets.");
5620 ds_put_cstr(ds, "\n\t- Consists of STP packets.");
5623 ds_put_cstr(ds, "\n\t- Consists of BFD packets.");
5625 case SLOW_CONTROLLER:
5626 ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages "
5627 "to the OpenFlow controller.");
5634 xlate_out_uninit(&trace.xout);
5637 rule_dpif_release(rule);
5641 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5642 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5645 unixctl_command_reply(conn, NULL);
5649 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5650 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5653 unixctl_command_reply(conn, NULL);
5656 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
5657 * 'reply' describing the results. */
5659 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
5661 struct cls_cursor cursor;
5662 struct facet *facet;
5666 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5667 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5668 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5669 if (!facet_check_consistency(facet)) {
5673 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5675 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
5679 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
5680 ofproto->up.name, errors);
5682 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
5687 ofproto_dpif_self_check(struct unixctl_conn *conn,
5688 int argc, const char *argv[], void *aux OVS_UNUSED)
5690 struct ds reply = DS_EMPTY_INITIALIZER;
5691 struct ofproto_dpif *ofproto;
5694 ofproto = ofproto_dpif_lookup(argv[1]);
5696 unixctl_command_reply_error(conn, "Unknown ofproto (use "
5697 "ofproto/list for help)");
5700 ofproto_dpif_self_check__(ofproto, &reply);
5702 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5703 ofproto_dpif_self_check__(ofproto, &reply);
5707 unixctl_command_reply(conn, ds_cstr(&reply));
5711 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
5712 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
5713 * to destroy 'ofproto_shash' and free the returned value. */
5714 static const struct shash_node **
5715 get_ofprotos(struct shash *ofproto_shash)
5717 const struct ofproto_dpif *ofproto;
5719 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5720 char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
5721 shash_add_nocopy(ofproto_shash, name, ofproto);
5724 return shash_sort(ofproto_shash);
5728 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
5729 const char *argv[] OVS_UNUSED,
5730 void *aux OVS_UNUSED)
5732 struct ds ds = DS_EMPTY_INITIALIZER;
5733 struct shash ofproto_shash;
5734 const struct shash_node **sorted_ofprotos;
5737 shash_init(&ofproto_shash);
5738 sorted_ofprotos = get_ofprotos(&ofproto_shash);
5739 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5740 const struct shash_node *node = sorted_ofprotos[i];
5741 ds_put_format(&ds, "%s\n", node->name);
5744 shash_destroy(&ofproto_shash);
5745 free(sorted_ofprotos);
5747 unixctl_command_reply(conn, ds_cstr(&ds));
5752 show_dp_rates(struct ds *ds, const char *heading,
5753 const struct avg_subfacet_rates *rates)
5755 ds_put_format(ds, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
5756 heading, rates->add_rate, rates->del_rate);
5760 dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
5762 const struct shash_node **ofprotos;
5763 struct ofproto_dpif *ofproto;
5764 struct shash ofproto_shash;
5765 uint64_t n_hit, n_missed;
5766 long long int minutes;
5769 n_hit = n_missed = 0;
5770 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5771 if (ofproto->backer == backer) {
5772 n_missed += ofproto->n_missed;
5773 n_hit += ofproto->n_hit;
5777 ds_put_format(ds, "%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5778 dpif_name(backer->dpif), n_hit, n_missed);
5779 ds_put_format(ds, "\tflows: cur: %zu, avg: %u, max: %u,"
5780 " life span: %lldms\n", hmap_count(&backer->subfacets),
5781 backer->avg_n_subfacet, backer->max_n_subfacet,
5782 backer->avg_subfacet_life);
5784 minutes = (time_msec() - backer->created) / (1000 * 60);
5785 if (minutes >= 60) {
5786 show_dp_rates(ds, "\thourly avg:", &backer->hourly);
5788 if (minutes >= 60 * 24) {
5789 show_dp_rates(ds, "\tdaily avg:", &backer->daily);
5791 show_dp_rates(ds, "\toverall avg:", &backer->lifetime);
5793 shash_init(&ofproto_shash);
5794 ofprotos = get_ofprotos(&ofproto_shash);
5795 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5796 struct ofproto_dpif *ofproto = ofprotos[i]->data;
5797 const struct shash_node **ports;
5800 if (ofproto->backer != backer) {
5804 ds_put_format(ds, "\t%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5805 ofproto->up.name, ofproto->n_hit, ofproto->n_missed);
5807 ports = shash_sort(&ofproto->up.port_by_name);
5808 for (j = 0; j < shash_count(&ofproto->up.port_by_name); j++) {
5809 const struct shash_node *node = ports[j];
5810 struct ofport *ofport = node->data;
5812 odp_port_t odp_port;
5814 ds_put_format(ds, "\t\t%s %u/", netdev_get_name(ofport->netdev),
5817 odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
5818 if (odp_port != ODPP_NONE) {
5819 ds_put_format(ds, "%"PRIu32":", odp_port);
5821 ds_put_cstr(ds, "none:");
5824 ds_put_format(ds, " (%s", netdev_get_type(ofport->netdev));
5827 if (!netdev_get_config(ofport->netdev, &config)) {
5828 const struct smap_node **nodes;
5831 nodes = smap_sort(&config);
5832 for (i = 0; i < smap_count(&config); i++) {
5833 const struct smap_node *node = nodes[i];
5834 ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
5835 node->key, node->value);
5839 smap_destroy(&config);
5841 ds_put_char(ds, ')');
5842 ds_put_char(ds, '\n');
5846 shash_destroy(&ofproto_shash);
5851 ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5852 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5854 struct ds ds = DS_EMPTY_INITIALIZER;
5855 const struct shash_node **backers;
5858 backers = shash_sort(&all_dpif_backers);
5859 for (i = 0; i < shash_count(&all_dpif_backers); i++) {
5860 dpif_show_backer(backers[i]->data, &ds);
5864 unixctl_command_reply(conn, ds_cstr(&ds));
5868 /* Dump the megaflow (facet) cache. This is useful to check the
5869 * correctness of flow wildcarding, since the same mechanism is used for
5870 * both xlate caching and kernel wildcarding.
5872 * It's important to note that in the output the flow description uses
5873 * OpenFlow (OFP) ports, but the actions use datapath (ODP) ports.
5875 * This command is only needed for advanced debugging, so it's not
5876 * documented in the man page. */
5878 ofproto_unixctl_dpif_dump_megaflows(struct unixctl_conn *conn,
5879 int argc OVS_UNUSED, const char *argv[],
5880 void *aux OVS_UNUSED)
5882 struct ds ds = DS_EMPTY_INITIALIZER;
5883 const struct ofproto_dpif *ofproto;
5884 long long int now = time_msec();
5885 struct cls_cursor cursor;
5886 struct facet *facet;
5888 ofproto = ofproto_dpif_lookup(argv[1]);
5890 unixctl_command_reply_error(conn, "no such bridge");
5894 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5895 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5896 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5897 cls_rule_format(&facet->cr, &ds);
5898 ds_put_cstr(&ds, ", ");
5899 ds_put_format(&ds, "n_subfacets:%zu, ", list_size(&facet->subfacets));
5900 ds_put_format(&ds, "used:%.3fs, ", (now - facet->used) / 1000.0);
5901 ds_put_cstr(&ds, "Datapath actions: ");
5902 if (facet->xout.slow) {
5903 uint64_t slow_path_stub[128 / 8];
5904 const struct nlattr *actions;
5907 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
5908 slow_path_stub, sizeof slow_path_stub,
5909 &actions, &actions_len);
5910 format_odp_actions(&ds, actions, actions_len);
5912 format_odp_actions(&ds, facet->xout.odp_actions.data,
5913 facet->xout.odp_actions.size);
5915 ds_put_cstr(&ds, "\n");
5917 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5919 ds_chomp(&ds, '\n');
5920 unixctl_command_reply(conn, ds_cstr(&ds));
5924 /* Disable using the megaflows.
5926 * This command is only needed for advanced debugging, so it's not
5927 * documented in the man page. */
5929 ofproto_unixctl_dpif_disable_megaflows(struct unixctl_conn *conn,
5930 int argc OVS_UNUSED,
5931 const char *argv[] OVS_UNUSED,
5932 void *aux OVS_UNUSED)
5934 struct ofproto_dpif *ofproto;
5936 enable_megaflows = false;
5938 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5939 flush(&ofproto->up);
5942 unixctl_command_reply(conn, "megaflows disabled");
5945 /* Re-enable using megaflows.
5947 * This command is only needed for advanced debugging, so it's not
5948 * documented in the man page. */
5950 ofproto_unixctl_dpif_enable_megaflows(struct unixctl_conn *conn,
5951 int argc OVS_UNUSED,
5952 const char *argv[] OVS_UNUSED,
5953 void *aux OVS_UNUSED)
5955 struct ofproto_dpif *ofproto;
5957 enable_megaflows = true;
5959 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5960 flush(&ofproto->up);
5963 unixctl_command_reply(conn, "megaflows enabled");
5967 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
5968 int argc OVS_UNUSED, const char *argv[],
5969 void *aux OVS_UNUSED)
5971 struct ds ds = DS_EMPTY_INITIALIZER;
5972 const struct ofproto_dpif *ofproto;
5973 struct subfacet *subfacet;
5975 ofproto = ofproto_dpif_lookup(argv[1]);
5977 unixctl_command_reply_error(conn, "no such bridge");
5981 update_stats(ofproto->backer);
5983 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->backer->subfacets) {
5984 struct facet *facet = subfacet->facet;
5985 struct odputil_keybuf maskbuf;
5988 if (facet->ofproto != ofproto) {
5992 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
5993 if (enable_megaflows) {
5994 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
5995 &facet->flow, UINT32_MAX);
5998 odp_flow_format(subfacet->key, subfacet->key_len,
5999 mask.data, mask.size, &ds, false);
6001 ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
6002 subfacet->dp_packet_count, subfacet->dp_byte_count);
6003 if (subfacet->used) {
6004 ds_put_format(&ds, "%.3fs",
6005 (time_msec() - subfacet->used) / 1000.0);
6007 ds_put_format(&ds, "never");
6009 if (subfacet->facet->tcp_flags) {
6010 ds_put_cstr(&ds, ", flags:");
6011 packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
6014 ds_put_cstr(&ds, ", actions:");
6015 if (facet->xout.slow) {
6016 uint64_t slow_path_stub[128 / 8];
6017 const struct nlattr *actions;
6020 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
6021 slow_path_stub, sizeof slow_path_stub,
6022 &actions, &actions_len);
6023 format_odp_actions(&ds, actions, actions_len);
6025 format_odp_actions(&ds, facet->xout.odp_actions.data,
6026 facet->xout.odp_actions.size);
6028 ds_put_char(&ds, '\n');
6031 unixctl_command_reply(conn, ds_cstr(&ds));
6036 ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
6037 int argc OVS_UNUSED, const char *argv[],
6038 void *aux OVS_UNUSED)
6040 struct ds ds = DS_EMPTY_INITIALIZER;
6041 struct ofproto_dpif *ofproto;
6043 ofproto = ofproto_dpif_lookup(argv[1]);
6045 unixctl_command_reply_error(conn, "no such bridge");
6049 flush(&ofproto->up);
6051 unixctl_command_reply(conn, ds_cstr(&ds));
6056 ofproto_dpif_unixctl_init(void)
6058 static bool registered;
6064 unixctl_command_register(
6066 "[dp_name]|bridge odp_flow|br_flow [-generate|packet]",
6067 1, 3, ofproto_unixctl_trace, NULL);
6068 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6069 ofproto_unixctl_fdb_flush, NULL);
6070 unixctl_command_register("fdb/show", "bridge", 1, 1,
6071 ofproto_unixctl_fdb_show, NULL);
6072 unixctl_command_register("ofproto/clog", "", 0, 0,
6073 ofproto_dpif_clog, NULL);
6074 unixctl_command_register("ofproto/unclog", "", 0, 0,
6075 ofproto_dpif_unclog, NULL);
6076 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6077 ofproto_dpif_self_check, NULL);
6078 unixctl_command_register("dpif/dump-dps", "", 0, 0,
6079 ofproto_unixctl_dpif_dump_dps, NULL);
6080 unixctl_command_register("dpif/show", "", 0, 0, ofproto_unixctl_dpif_show,
6082 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
6083 ofproto_unixctl_dpif_dump_flows, NULL);
6084 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
6085 ofproto_unixctl_dpif_del_flows, NULL);
6086 unixctl_command_register("dpif/dump-megaflows", "bridge", 1, 1,
6087 ofproto_unixctl_dpif_dump_megaflows, NULL);
6088 unixctl_command_register("dpif/disable-megaflows", "", 0, 0,
6089 ofproto_unixctl_dpif_disable_megaflows, NULL);
6090 unixctl_command_register("dpif/enable-megaflows", "", 0, 0,
6091 ofproto_unixctl_dpif_enable_megaflows, NULL);
6094 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6096 * This is deprecated. It is only for compatibility with broken device drivers
6097 * in old versions of Linux that do not properly support VLANs when VLAN
6098 * devices are not used. When broken device drivers are no longer in
6099 * widespread use, we will delete these interfaces. */
6102 set_realdev(struct ofport *ofport_, ofp_port_t realdev_ofp_port, int vid)
6104 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6105 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6107 if (realdev_ofp_port == ofport->realdev_ofp_port
6108 && vid == ofport->vlandev_vid) {
6112 ofproto->backer->need_revalidate = REV_RECONFIGURE;
6114 if (ofport->realdev_ofp_port) {
6117 if (realdev_ofp_port && ofport->bundle) {
6118 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6119 * themselves be part of a bundle. */
6120 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6123 ofport->realdev_ofp_port = realdev_ofp_port;
6124 ofport->vlandev_vid = vid;
6126 if (realdev_ofp_port) {
6127 vsp_add(ofport, realdev_ofp_port, vid);
6134 hash_realdev_vid(ofp_port_t realdev_ofp_port, int vid)
6136 return hash_2words(ofp_to_u16(realdev_ofp_port), vid);
6140 ofproto_has_vlan_splinters(const struct ofproto_dpif *ofproto)
6141 OVS_EXCLUDED(ofproto->vsp_mutex)
6145 ovs_mutex_lock(&ofproto->vsp_mutex);
6146 ret = !hmap_is_empty(&ofproto->realdev_vid_map);
6147 ovs_mutex_unlock(&ofproto->vsp_mutex);
6152 vsp_realdev_to_vlandev__(const struct ofproto_dpif *ofproto,
6153 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6154 OVS_REQUIRES(ofproto->vsp_mutex)
6156 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6157 int vid = vlan_tci_to_vid(vlan_tci);
6158 const struct vlan_splinter *vsp;
6160 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6161 hash_realdev_vid(realdev_ofp_port, vid),
6162 &ofproto->realdev_vid_map) {
6163 if (vsp->realdev_ofp_port == realdev_ofp_port
6164 && vsp->vid == vid) {
6165 return vsp->vlandev_ofp_port;
6169 return realdev_ofp_port;
6172 /* Returns the OFP port number of the Linux VLAN device that corresponds to
6173 * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
6174 * 'struct ofport_dpif'. For example, given 'realdev_ofp_port' of eth0 and
6175 * 'vlan_tci' 9, it would return the port number of eth0.9.
6177 * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
6178 * function just returns its 'realdev_ofp_port' argument. */
6180 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6181 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6182 OVS_EXCLUDED(ofproto->vsp_mutex)
6186 ovs_mutex_lock(&ofproto->vsp_mutex);
6187 ret = vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, vlan_tci);
6188 ovs_mutex_unlock(&ofproto->vsp_mutex);
6192 static struct vlan_splinter *
6193 vlandev_find(const struct ofproto_dpif *ofproto, ofp_port_t vlandev_ofp_port)
6195 struct vlan_splinter *vsp;
6197 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node,
6198 hash_ofp_port(vlandev_ofp_port),
6199 &ofproto->vlandev_map) {
6200 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6208 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6209 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6210 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6211 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6212 * eth0 and store 9 in '*vid'.
6214 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6215 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6218 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6219 ofp_port_t vlandev_ofp_port, int *vid)
6220 OVS_REQUIRES(ofproto->vsp_mutex)
6222 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6223 const struct vlan_splinter *vsp;
6225 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6230 return vsp->realdev_ofp_port;
6236 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
6237 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
6238 * 'flow->in_port' to the "real" device backing the VLAN device, sets
6239 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
6240 * always the case unless VLAN splinters are enabled), returns false without
6241 * making any changes. */
6243 vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
6244 OVS_EXCLUDED(ofproto->vsp_mutex)
6249 ovs_mutex_lock(&ofproto->vsp_mutex);
6250 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port.ofp_port, &vid);
6251 ovs_mutex_unlock(&ofproto->vsp_mutex);
6256 /* Cause the flow to be processed as if it came in on the real device with
6257 * the VLAN device's VLAN ID. */
6258 flow->in_port.ofp_port = realdev;
6259 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
6264 vsp_remove(struct ofport_dpif *port)
6266 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6267 struct vlan_splinter *vsp;
6269 ovs_mutex_lock(&ofproto->vsp_mutex);
6270 vsp = vlandev_find(ofproto, port->up.ofp_port);
6272 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6273 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6276 port->realdev_ofp_port = 0;
6278 VLOG_ERR("missing vlan device record");
6280 ovs_mutex_unlock(&ofproto->vsp_mutex);
6284 vsp_add(struct ofport_dpif *port, ofp_port_t realdev_ofp_port, int vid)
6286 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6288 ovs_mutex_lock(&ofproto->vsp_mutex);
6289 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6290 && (vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, htons(vid))
6291 == realdev_ofp_port)) {
6292 struct vlan_splinter *vsp;
6294 vsp = xmalloc(sizeof *vsp);
6295 vsp->realdev_ofp_port = realdev_ofp_port;
6296 vsp->vlandev_ofp_port = port->up.ofp_port;
6299 port->realdev_ofp_port = realdev_ofp_port;
6301 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6302 hash_ofp_port(port->up.ofp_port));
6303 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6304 hash_realdev_vid(realdev_ofp_port, vid));
6306 VLOG_ERR("duplicate vlan device record");
6308 ovs_mutex_unlock(&ofproto->vsp_mutex);
6312 ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
6314 const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
6315 return ofport ? ofport->odp_port : ODPP_NONE;
6318 struct ofport_dpif *
6319 odp_port_to_ofport(const struct dpif_backer *backer, odp_port_t odp_port)
6321 struct ofport_dpif *port;
6323 ovs_rwlock_rdlock(&backer->odp_to_ofport_lock);
6324 HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node, hash_odp_port(odp_port),
6325 &backer->odp_to_ofport_map) {
6326 if (port->odp_port == odp_port) {
6327 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6332 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6337 odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
6339 struct ofport_dpif *port;
6341 port = odp_port_to_ofport(ofproto->backer, odp_port);
6342 if (port && &ofproto->up == port->up.ofproto) {
6343 return port->up.ofp_port;
6349 /* Compute exponentially weighted moving average, adding 'new' as the newest,
6350 * most heavily weighted element. 'base' designates the rate of decay: after
6351 * 'base' further updates, 'new''s weight in the EWMA decays to about 1/e
6354 exp_mavg(double *avg, int base, double new)
6356 *avg = (*avg * (base - 1) + new) / base;
6360 update_moving_averages(struct dpif_backer *backer)
6362 const int min_ms = 60 * 1000; /* milliseconds in one minute. */
6363 long long int minutes = (time_msec() - backer->created) / min_ms;
6366 backer->lifetime.add_rate = (double) backer->total_subfacet_add_count
6368 backer->lifetime.del_rate = (double) backer->total_subfacet_del_count
6371 backer->lifetime.add_rate = 0.0;
6372 backer->lifetime.del_rate = 0.0;
6375 /* Update hourly averages on the minute boundaries. */
6376 if (time_msec() - backer->last_minute >= min_ms) {
6377 exp_mavg(&backer->hourly.add_rate, 60, backer->subfacet_add_count);
6378 exp_mavg(&backer->hourly.del_rate, 60, backer->subfacet_del_count);
6380 /* Update daily averages on the hour boundaries. */
6381 if ((backer->last_minute - backer->created) / min_ms % 60 == 59) {
6382 exp_mavg(&backer->daily.add_rate, 24, backer->hourly.add_rate);
6383 exp_mavg(&backer->daily.del_rate, 24, backer->hourly.del_rate);
6386 backer->total_subfacet_add_count += backer->subfacet_add_count;
6387 backer->total_subfacet_del_count += backer->subfacet_del_count;
6388 backer->subfacet_add_count = 0;
6389 backer->subfacet_del_count = 0;
6390 backer->last_minute += min_ms;
6394 const struct ofproto_class ofproto_dpif_class = {
6429 port_is_lacp_current,
6430 NULL, /* rule_choose_table */
6439 rule_modify_actions,
6453 get_stp_port_status,
6460 is_mirror_output_bundle,
6461 forward_bpdu_changed,
6462 set_mac_table_config,
6464 NULL, /* meter_get_features */
6465 NULL, /* meter_set */
6466 NULL, /* meter_get */
6467 NULL, /* meter_del */