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 ofproto_dpif *ofproto;
234 struct list subfacets;
235 long long int used; /* Time last used; time created if not used. */
238 struct flow flow; /* Flow of the creating subfacet. */
239 struct cls_rule cr; /* In 'ofproto_dpif's facets classifier. */
243 * - Do include packets and bytes sent "by hand", e.g. with
246 * - Do include packets and bytes that were obtained from the datapath
247 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
248 * DPIF_FP_ZERO_STATS).
250 * - Do not include packets or bytes that can be obtained from the
251 * datapath for any existing subfacet.
253 uint64_t packet_count; /* Number of packets received. */
254 uint64_t byte_count; /* Number of bytes received. */
256 /* Resubmit statistics. */
257 uint64_t prev_packet_count; /* Number of packets from last stats push. */
258 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
259 long long int prev_used; /* Used time from last stats push. */
262 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
263 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
264 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
266 struct xlate_out xout;
268 /* Storage for a single subfacet, to reduce malloc() time and space
269 * overhead. (A facet always has at least one subfacet and in the common
270 * case has exactly one subfacet. However, 'one_subfacet' may not
271 * always be valid, since it could have been removed after newer
272 * subfacets were pushed onto the 'subfacets' list.) */
273 struct subfacet one_subfacet;
275 long long int learn_rl; /* Rate limiter for facet_learn(). */
278 static struct facet *facet_create(const struct flow_miss *);
279 static void facet_remove(struct facet *);
280 static void facet_free(struct facet *);
282 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
283 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
284 const struct flow *);
285 static bool facet_revalidate(struct facet *);
286 static bool facet_check_consistency(struct facet *);
288 static void facet_flush_stats(struct facet *);
290 static void facet_reset_counters(struct facet *);
291 static void flow_push_stats(struct ofproto_dpif *, struct flow *,
292 struct dpif_flow_stats *, bool may_learn);
293 static void facet_push_stats(struct facet *, bool may_learn);
294 static void facet_learn(struct facet *);
295 static void facet_account(struct facet *);
296 static void push_all_stats(void);
298 static bool facet_is_controller_flow(struct facet *);
301 struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
305 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
306 struct list bundle_node; /* In struct ofbundle's "ports" list. */
307 struct cfm *cfm; /* Connectivity Fault Management, if any. */
308 struct bfd *bfd; /* BFD, if any. */
309 bool may_enable; /* May be enabled in bonds. */
310 bool is_tunnel; /* This port is a tunnel. */
311 long long int carrier_seq; /* Carrier status changes. */
312 struct ofport_dpif *peer; /* Peer if patch port. */
315 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
316 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
317 long long int stp_state_entered;
319 /* Queue to DSCP mapping. */
320 struct ofproto_port_queue *qdscp;
323 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
325 * This is deprecated. It is only for compatibility with broken device
326 * drivers in old versions of Linux that do not properly support VLANs when
327 * VLAN devices are not used. When broken device drivers are no longer in
328 * widespread use, we will delete these interfaces. */
329 ofp_port_t realdev_ofp_port;
333 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
335 * This is deprecated. It is only for compatibility with broken device drivers
336 * in old versions of Linux that do not properly support VLANs when VLAN
337 * devices are not used. When broken device drivers are no longer in
338 * widespread use, we will delete these interfaces. */
339 struct vlan_splinter {
340 struct hmap_node realdev_vid_node;
341 struct hmap_node vlandev_node;
342 ofp_port_t realdev_ofp_port;
343 ofp_port_t vlandev_ofp_port;
347 static void vsp_remove(struct ofport_dpif *);
348 static void vsp_add(struct ofport_dpif *, ofp_port_t realdev_ofp_port, int vid);
350 static odp_port_t ofp_port_to_odp_port(const struct ofproto_dpif *,
353 static ofp_port_t odp_port_to_ofp_port(const struct ofproto_dpif *,
356 static struct ofport_dpif *
357 ofport_dpif_cast(const struct ofport *ofport)
359 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
362 static void port_run(struct ofport_dpif *);
363 static void port_run_fast(struct ofport_dpif *);
364 static void port_wait(struct ofport_dpif *);
365 static int set_bfd(struct ofport *, const struct smap *);
366 static int set_cfm(struct ofport *, const struct cfm_settings *);
367 static void ofport_update_peer(struct ofport_dpif *);
368 static void run_fast_rl(void);
369 static int run_fast(struct ofproto *);
371 struct dpif_completion {
372 struct list list_node;
373 struct ofoperation *op;
376 /* Reasons that we might need to revalidate every facet, and corresponding
379 * A value of 0 means that there is no need to revalidate.
381 * It would be nice to have some cleaner way to integrate with coverage
382 * counters, but with only a few reasons I guess this is good enough for
384 enum revalidate_reason {
385 REV_RECONFIGURE = 1, /* Switch configuration changed. */
386 REV_STP, /* Spanning tree protocol port status change. */
387 REV_BOND, /* Bonding changed. */
388 REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
389 REV_FLOW_TABLE, /* Flow table changed. */
390 REV_MAC_LEARNING, /* Mac learning changed. */
391 REV_INCONSISTENCY /* Facet self-check failed. */
393 COVERAGE_DEFINE(rev_reconfigure);
394 COVERAGE_DEFINE(rev_stp);
395 COVERAGE_DEFINE(rev_bond);
396 COVERAGE_DEFINE(rev_port_toggled);
397 COVERAGE_DEFINE(rev_flow_table);
398 COVERAGE_DEFINE(rev_mac_learning);
399 COVERAGE_DEFINE(rev_inconsistency);
401 struct avg_subfacet_rates {
402 double add_rate; /* Moving average of new flows created per minute. */
403 double del_rate; /* Moving average of flows deleted per minute. */
406 /* All datapaths of a given type share a single dpif backer instance. */
412 struct timer next_expiration;
414 struct ovs_rwlock odp_to_ofport_lock;
415 struct hmap odp_to_ofport_map OVS_GUARDED; /* ODP port to ofport map. */
417 struct simap tnl_backers; /* Set of dpif ports backing tunnels. */
419 /* Facet revalidation flags applying to facets which use this backer. */
420 enum revalidate_reason need_revalidate; /* Revalidate every facet. */
422 struct hmap drop_keys; /* Set of dropped odp keys. */
423 bool recv_set_enable; /* Enables or disables receiving packets. */
425 struct hmap subfacets;
426 struct governor *governor;
428 /* Subfacet statistics.
430 * These keep track of the total number of subfacets added and deleted and
431 * flow life span. They are useful for computing the flow rates stats
432 * exposed via "ovs-appctl dpif/show". The goal is to learn about
433 * traffic patterns in ways that we can use later to improve Open vSwitch
434 * performance in new situations. */
435 long long int created; /* Time when it is created. */
436 unsigned max_n_subfacet; /* Maximum number of flows */
437 unsigned avg_n_subfacet; /* Average number of flows. */
438 long long int avg_subfacet_life; /* Average life span of subfacets. */
440 /* The average number of subfacets... */
441 struct avg_subfacet_rates hourly; /* ...over the last hour. */
442 struct avg_subfacet_rates daily; /* ...over the last day. */
443 struct avg_subfacet_rates lifetime; /* ...over the switch lifetime. */
444 long long int last_minute; /* Last time 'hourly' was updated. */
446 /* Number of subfacets added or deleted since 'last_minute'. */
447 unsigned subfacet_add_count;
448 unsigned subfacet_del_count;
450 /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
451 unsigned long long int total_subfacet_add_count;
452 unsigned long long int total_subfacet_del_count;
454 /* Number of upcall handling threads. */
455 unsigned int n_handler_threads;
458 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
459 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
461 static void drop_key_clear(struct dpif_backer *);
462 static void update_moving_averages(struct dpif_backer *backer);
464 struct ofproto_dpif {
465 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
467 struct dpif_backer *backer;
469 /* Special OpenFlow rules. */
470 struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
471 struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
472 struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
475 struct netflow *netflow;
476 struct dpif_sflow *sflow;
477 struct dpif_ipfix *ipfix;
478 struct hmap bundles; /* Contains "struct ofbundle"s. */
479 struct mac_learning *ml;
480 bool has_bonded_bundles;
481 struct mbridge *mbridge;
484 struct classifier facets; /* Contains 'struct facet's. */
485 long long int consistency_rl;
487 /* Support for debugging async flow mods. */
488 struct list completions;
490 struct netdev_stats stats; /* To account packets generated and consumed in
495 long long int stp_last_tick;
497 /* VLAN splinters. */
498 struct ovs_mutex vsp_mutex;
499 struct hmap realdev_vid_map OVS_GUARDED; /* (realdev,vid) -> vlandev. */
500 struct hmap vlandev_map OVS_GUARDED; /* vlandev -> (realdev,vid). */
503 struct sset ports; /* Set of standard port names. */
504 struct sset ghost_ports; /* Ports with no datapath port. */
505 struct sset port_poll_set; /* Queued names for port_poll() reply. */
506 int port_poll_errno; /* Last errno for port_poll() reply. */
508 /* Per ofproto's dpif stats. */
513 struct ovs_mutex flow_mod_mutex;
514 struct list flow_mods OVS_GUARDED;
515 size_t n_flow_mods OVS_GUARDED;
517 struct ovs_mutex pin_mutex;
518 struct list pins OVS_GUARDED;
519 size_t n_pins OVS_GUARDED;
522 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
523 * for debugging the asynchronous flow_mod implementation.) */
526 /* By default, flows in the datapath are wildcarded (megaflows). They
527 * may be disabled with the "ovs-appctl dpif/disable-megaflows" command. */
528 static bool enable_megaflows = true;
530 /* All existing ofproto_dpif instances, indexed by ->up.name. */
531 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
533 static void ofproto_dpif_unixctl_init(void);
535 static inline struct ofproto_dpif *
536 ofproto_dpif_cast(const struct ofproto *ofproto)
538 ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
539 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
542 static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *ofproto,
543 ofp_port_t ofp_port);
544 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
545 const struct ofpbuf *packet, struct ds *);
548 static void handle_upcalls(struct dpif_backer *);
550 /* Flow expiration. */
551 static int expire(struct dpif_backer *);
554 static void send_netflow_active_timeouts(struct ofproto_dpif *);
557 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
559 /* Global variables. */
560 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
562 /* Initial mappings of port to bridge mappings. */
563 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
565 /* Executes and takes ownership of 'fm'. */
567 ofproto_dpif_flow_mod(struct ofproto_dpif *ofproto,
568 struct ofputil_flow_mod *fm)
570 ovs_mutex_lock(&ofproto->flow_mod_mutex);
571 if (ofproto->n_flow_mods > 1024) {
572 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
573 COVERAGE_INC(flow_mod_overflow);
579 list_push_back(&ofproto->flow_mods, &fm->list_node);
580 ofproto->n_flow_mods++;
581 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
584 /* Appends 'pin' to the queue of "packet ins" to be sent to the controller.
585 * Takes ownership of 'pin' and pin->packet. */
587 ofproto_dpif_send_packet_in(struct ofproto_dpif *ofproto,
588 struct ofputil_packet_in *pin)
590 ovs_mutex_lock(&ofproto->pin_mutex);
591 if (ofproto->n_pins > 1024) {
592 ovs_mutex_unlock(&ofproto->pin_mutex);
593 COVERAGE_INC(packet_in_overflow);
594 free(CONST_CAST(void *, pin->packet));
599 list_push_back(&ofproto->pins, &pin->list_node);
601 ovs_mutex_unlock(&ofproto->pin_mutex);
604 /* Factory functions. */
607 init(const struct shash *iface_hints)
609 struct shash_node *node;
611 /* Make a local copy, since we don't own 'iface_hints' elements. */
612 SHASH_FOR_EACH(node, iface_hints) {
613 const struct iface_hint *orig_hint = node->data;
614 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
616 new_hint->br_name = xstrdup(orig_hint->br_name);
617 new_hint->br_type = xstrdup(orig_hint->br_type);
618 new_hint->ofp_port = orig_hint->ofp_port;
620 shash_add(&init_ofp_ports, node->name, new_hint);
625 enumerate_types(struct sset *types)
627 dp_enumerate_types(types);
631 enumerate_names(const char *type, struct sset *names)
633 struct ofproto_dpif *ofproto;
636 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
637 if (strcmp(type, ofproto->up.type)) {
640 sset_add(names, ofproto->up.name);
647 del(const char *type, const char *name)
652 error = dpif_open(name, type, &dpif);
654 error = dpif_delete(dpif);
661 port_open_type(const char *datapath_type, const char *port_type)
663 return dpif_port_open_type(datapath_type, port_type);
666 /* Type functions. */
668 static void process_dpif_port_changes(struct dpif_backer *);
669 static void process_dpif_all_ports_changed(struct dpif_backer *);
670 static void process_dpif_port_change(struct dpif_backer *,
671 const char *devname);
672 static void process_dpif_port_error(struct dpif_backer *, int error);
674 static struct ofproto_dpif *
675 lookup_ofproto_dpif_by_port_name(const char *name)
677 struct ofproto_dpif *ofproto;
679 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
680 if (sset_contains(&ofproto->ports, name)) {
689 type_run(const char *type)
691 static long long int push_timer = LLONG_MIN;
692 struct dpif_backer *backer;
694 backer = shash_find_data(&all_dpif_backers, type);
696 /* This is not necessarily a problem, since backers are only
697 * created on demand. */
701 dpif_run(backer->dpif);
703 /* The most natural place to push facet statistics is when they're pulled
704 * from the datapath. However, when there are many flows in the datapath,
705 * this expensive operation can occur so frequently, that it reduces our
706 * ability to quickly set up flows. To reduce the cost, we push statistics
708 if (time_msec() > push_timer) {
709 push_timer = time_msec() + 2000;
713 /* If vswitchd started with other_config:flow_restore_wait set as "true",
714 * and the configuration has now changed to "false", enable receiving
715 * packets from the datapath. */
716 if (!backer->recv_set_enable && !ofproto_get_flow_restore_wait()) {
719 backer->recv_set_enable = true;
721 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
723 udpif_recv_set(backer->udpif, 0, false);
724 VLOG_ERR("Failed to enable receiving packets in dpif.");
727 udpif_recv_set(backer->udpif, n_handler_threads,
728 backer->recv_set_enable);
729 dpif_flow_flush(backer->dpif);
730 backer->need_revalidate = REV_RECONFIGURE;
733 /* If the n_handler_threads is reconfigured, call udpif_recv_set()
734 * to reset the handler threads. */
735 if (backer->n_handler_threads != n_handler_threads) {
736 udpif_recv_set(backer->udpif, n_handler_threads,
737 backer->recv_set_enable);
738 backer->n_handler_threads = n_handler_threads;
741 if (backer->need_revalidate) {
742 struct ofproto_dpif *ofproto;
743 struct simap_node *node;
744 struct simap tmp_backers;
746 /* Handle tunnel garbage collection. */
747 simap_init(&tmp_backers);
748 simap_swap(&backer->tnl_backers, &tmp_backers);
750 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
751 struct ofport_dpif *iter;
753 if (backer != ofproto->backer) {
757 HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
758 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
761 if (!iter->is_tunnel) {
765 dp_port = netdev_vport_get_dpif_port(iter->up.netdev,
766 namebuf, sizeof namebuf);
767 node = simap_find(&tmp_backers, dp_port);
769 simap_put(&backer->tnl_backers, dp_port, node->data);
770 simap_delete(&tmp_backers, node);
771 node = simap_find(&backer->tnl_backers, dp_port);
773 node = simap_find(&backer->tnl_backers, dp_port);
775 odp_port_t odp_port = ODPP_NONE;
777 if (!dpif_port_add(backer->dpif, iter->up.netdev,
779 simap_put(&backer->tnl_backers, dp_port,
780 odp_to_u32(odp_port));
781 node = simap_find(&backer->tnl_backers, dp_port);
786 iter->odp_port = node ? u32_to_odp(node->data) : ODPP_NONE;
787 if (tnl_port_reconfigure(iter, iter->up.netdev,
789 backer->need_revalidate = REV_RECONFIGURE;
794 SIMAP_FOR_EACH (node, &tmp_backers) {
795 dpif_port_del(backer->dpif, u32_to_odp(node->data));
797 simap_destroy(&tmp_backers);
799 switch (backer->need_revalidate) {
800 case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
801 case REV_STP: COVERAGE_INC(rev_stp); break;
802 case REV_BOND: COVERAGE_INC(rev_bond); break;
803 case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
804 case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
805 case REV_MAC_LEARNING: COVERAGE_INC(rev_mac_learning); break;
806 case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
808 backer->need_revalidate = 0;
810 /* Clear the drop_keys in case we should now be accepting some
811 * formerly dropped flows. */
812 drop_key_clear(backer);
814 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
815 struct facet *facet, *next;
816 struct ofport_dpif *ofport;
817 struct cls_cursor cursor;
818 struct ofbundle *bundle;
820 if (ofproto->backer != backer) {
824 ovs_rwlock_wrlock(&xlate_rwlock);
825 xlate_ofproto_set(ofproto, ofproto->up.name,
826 ofproto->backer->dpif, ofproto->miss_rule,
827 ofproto->no_packet_in_rule, ofproto->ml,
828 ofproto->stp, ofproto->mbridge,
829 ofproto->sflow, ofproto->ipfix,
830 ofproto->up.frag_handling,
831 ofproto->up.forward_bpdu,
832 connmgr_has_in_band(ofproto->up.connmgr),
833 ofproto->netflow != NULL);
835 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
836 xlate_bundle_set(ofproto, bundle, bundle->name,
837 bundle->vlan_mode, bundle->vlan,
838 bundle->trunks, bundle->use_priority_tags,
839 bundle->bond, bundle->lacp,
843 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
844 int stp_port = ofport->stp_port
845 ? stp_port_no(ofport->stp_port)
847 xlate_ofport_set(ofproto, ofport->bundle, ofport,
848 ofport->up.ofp_port, ofport->odp_port,
849 ofport->up.netdev, ofport->cfm,
850 ofport->bfd, ofport->peer, stp_port,
851 ofport->qdscp, ofport->n_qdscp,
852 ofport->up.pp.config, ofport->is_tunnel,
855 ovs_rwlock_unlock(&xlate_rwlock);
857 /* Only ofproto-dpif cares about the facet classifier so we just
858 * lock cls_cursor_init() to appease the thread safety analysis. */
859 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
860 cls_cursor_init(&cursor, &ofproto->facets, NULL);
861 ovs_rwlock_unlock(&ofproto->facets.rwlock);
862 CLS_CURSOR_FOR_EACH_SAFE (facet, next, cr, &cursor) {
863 facet_revalidate(facet);
868 udpif_revalidate(backer->udpif);
871 if (!backer->recv_set_enable) {
872 /* Wake up before a max of 1000ms. */
873 timer_set_duration(&backer->next_expiration, 1000);
874 } else if (timer_expired(&backer->next_expiration)) {
875 int delay = expire(backer);
876 timer_set_duration(&backer->next_expiration, delay);
879 process_dpif_port_changes(backer);
881 if (backer->governor) {
884 governor_run(backer->governor);
886 /* If the governor has shrunk to its minimum size and the number of
887 * subfacets has dwindled, then drop the governor entirely.
889 * For hysteresis, the number of subfacets to drop the governor is
890 * smaller than the number needed to trigger its creation. */
891 n_subfacets = hmap_count(&backer->subfacets);
892 if (n_subfacets * 4 < flow_eviction_threshold
893 && governor_is_idle(backer->governor)) {
894 governor_destroy(backer->governor);
895 backer->governor = NULL;
902 /* Check for and handle port changes in 'backer''s dpif. */
904 process_dpif_port_changes(struct dpif_backer *backer)
910 error = dpif_port_poll(backer->dpif, &devname);
916 process_dpif_all_ports_changed(backer);
920 process_dpif_port_change(backer, devname);
925 process_dpif_port_error(backer, error);
932 process_dpif_all_ports_changed(struct dpif_backer *backer)
934 struct ofproto_dpif *ofproto;
935 struct dpif_port dpif_port;
936 struct dpif_port_dump dump;
937 struct sset devnames;
940 sset_init(&devnames);
941 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
942 if (ofproto->backer == backer) {
943 struct ofport *ofport;
945 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
946 sset_add(&devnames, netdev_get_name(ofport->netdev));
950 DPIF_PORT_FOR_EACH (&dpif_port, &dump, backer->dpif) {
951 sset_add(&devnames, dpif_port.name);
954 SSET_FOR_EACH (devname, &devnames) {
955 process_dpif_port_change(backer, devname);
957 sset_destroy(&devnames);
961 process_dpif_port_change(struct dpif_backer *backer, const char *devname)
963 struct ofproto_dpif *ofproto;
964 struct dpif_port port;
966 /* Don't report on the datapath's device. */
967 if (!strcmp(devname, dpif_base_name(backer->dpif))) {
971 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
972 &all_ofproto_dpifs) {
973 if (simap_contains(&ofproto->backer->tnl_backers, devname)) {
978 ofproto = lookup_ofproto_dpif_by_port_name(devname);
979 if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
980 /* The port was removed. If we know the datapath,
981 * report it through poll_set(). If we don't, it may be
982 * notifying us of a removal we initiated, so ignore it.
983 * If there's a pending ENOBUFS, let it stand, since
984 * everything will be reevaluated. */
985 if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
986 sset_add(&ofproto->port_poll_set, devname);
987 ofproto->port_poll_errno = 0;
989 } else if (!ofproto) {
990 /* The port was added, but we don't know with which
991 * ofproto we should associate it. Delete it. */
992 dpif_port_del(backer->dpif, port.port_no);
994 struct ofport_dpif *ofport;
996 ofport = ofport_dpif_cast(shash_find_data(
997 &ofproto->up.port_by_name, devname));
999 && ofport->odp_port != port.port_no
1000 && !odp_port_to_ofport(backer, port.port_no))
1002 /* 'ofport''s datapath port number has changed from
1003 * 'ofport->odp_port' to 'port.port_no'. Update our internal data
1004 * structures to match. */
1005 ovs_rwlock_wrlock(&backer->odp_to_ofport_lock);
1006 hmap_remove(&backer->odp_to_ofport_map, &ofport->odp_port_node);
1007 ofport->odp_port = port.port_no;
1008 hmap_insert(&backer->odp_to_ofport_map, &ofport->odp_port_node,
1009 hash_odp_port(port.port_no));
1010 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
1011 backer->need_revalidate = REV_RECONFIGURE;
1014 dpif_port_destroy(&port);
1017 /* Propagate 'error' to all ofprotos based on 'backer'. */
1019 process_dpif_port_error(struct dpif_backer *backer, int error)
1021 struct ofproto_dpif *ofproto;
1023 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1024 if (ofproto->backer == backer) {
1025 sset_clear(&ofproto->port_poll_set);
1026 ofproto->port_poll_errno = error;
1032 dpif_backer_run_fast(struct dpif_backer *backer)
1034 udpif_run(backer->udpif);
1035 handle_upcalls(backer);
1041 type_run_fast(const char *type)
1043 struct dpif_backer *backer;
1045 backer = shash_find_data(&all_dpif_backers, type);
1047 /* This is not necessarily a problem, since backers are only
1048 * created on demand. */
1052 return dpif_backer_run_fast(backer);
1058 static long long int port_rl = LLONG_MIN;
1060 if (time_msec() >= port_rl) {
1061 struct ofproto_dpif *ofproto;
1063 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1064 run_fast(&ofproto->up);
1066 port_rl = time_msec() + 200;
1071 type_wait(const char *type)
1073 struct dpif_backer *backer;
1075 backer = shash_find_data(&all_dpif_backers, type);
1077 /* This is not necessarily a problem, since backers are only
1078 * created on demand. */
1082 if (backer->governor) {
1083 governor_wait(backer->governor);
1086 timer_wait(&backer->next_expiration);
1087 dpif_wait(backer->dpif);
1088 udpif_wait(backer->udpif);
1091 /* Basic life-cycle. */
1093 static int add_internal_flows(struct ofproto_dpif *);
1095 static struct ofproto *
1098 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
1099 return &ofproto->up;
1103 dealloc(struct ofproto *ofproto_)
1105 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1110 close_dpif_backer(struct dpif_backer *backer)
1112 struct shash_node *node;
1114 ovs_assert(backer->refcount > 0);
1116 if (--backer->refcount) {
1120 drop_key_clear(backer);
1121 hmap_destroy(&backer->drop_keys);
1123 simap_destroy(&backer->tnl_backers);
1124 ovs_rwlock_destroy(&backer->odp_to_ofport_lock);
1125 hmap_destroy(&backer->odp_to_ofport_map);
1126 node = shash_find(&all_dpif_backers, backer->type);
1128 shash_delete(&all_dpif_backers, node);
1129 udpif_destroy(backer->udpif);
1130 dpif_close(backer->dpif);
1132 ovs_assert(hmap_is_empty(&backer->subfacets));
1133 hmap_destroy(&backer->subfacets);
1134 governor_destroy(backer->governor);
1139 /* Datapath port slated for removal from datapath. */
1140 struct odp_garbage {
1141 struct list list_node;
1142 odp_port_t odp_port;
1146 open_dpif_backer(const char *type, struct dpif_backer **backerp)
1148 struct dpif_backer *backer;
1149 struct dpif_port_dump port_dump;
1150 struct dpif_port port;
1151 struct shash_node *node;
1152 struct list garbage_list;
1153 struct odp_garbage *garbage, *next;
1159 backer = shash_find_data(&all_dpif_backers, type);
1166 backer_name = xasprintf("ovs-%s", type);
1168 /* Remove any existing datapaths, since we assume we're the only
1169 * userspace controlling the datapath. */
1171 dp_enumerate_names(type, &names);
1172 SSET_FOR_EACH(name, &names) {
1173 struct dpif *old_dpif;
1175 /* Don't remove our backer if it exists. */
1176 if (!strcmp(name, backer_name)) {
1180 if (dpif_open(name, type, &old_dpif)) {
1181 VLOG_WARN("couldn't open old datapath %s to remove it", name);
1183 dpif_delete(old_dpif);
1184 dpif_close(old_dpif);
1187 sset_destroy(&names);
1189 backer = xmalloc(sizeof *backer);
1191 error = dpif_create_and_open(backer_name, type, &backer->dpif);
1194 VLOG_ERR("failed to open datapath of type %s: %s", type,
1195 ovs_strerror(error));
1199 backer->udpif = udpif_create(backer, backer->dpif);
1201 backer->type = xstrdup(type);
1202 backer->governor = NULL;
1203 backer->refcount = 1;
1204 hmap_init(&backer->odp_to_ofport_map);
1205 ovs_rwlock_init(&backer->odp_to_ofport_lock);
1206 hmap_init(&backer->drop_keys);
1207 hmap_init(&backer->subfacets);
1208 timer_set_duration(&backer->next_expiration, 1000);
1209 backer->need_revalidate = 0;
1210 simap_init(&backer->tnl_backers);
1211 backer->recv_set_enable = !ofproto_get_flow_restore_wait();
1214 if (backer->recv_set_enable) {
1215 dpif_flow_flush(backer->dpif);
1218 /* Loop through the ports already on the datapath and remove any
1219 * that we don't need anymore. */
1220 list_init(&garbage_list);
1221 dpif_port_dump_start(&port_dump, backer->dpif);
1222 while (dpif_port_dump_next(&port_dump, &port)) {
1223 node = shash_find(&init_ofp_ports, port.name);
1224 if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
1225 garbage = xmalloc(sizeof *garbage);
1226 garbage->odp_port = port.port_no;
1227 list_push_front(&garbage_list, &garbage->list_node);
1230 dpif_port_dump_done(&port_dump);
1232 LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
1233 dpif_port_del(backer->dpif, garbage->odp_port);
1234 list_remove(&garbage->list_node);
1238 shash_add(&all_dpif_backers, type, backer);
1240 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
1242 VLOG_ERR("failed to listen on datapath of type %s: %s",
1243 type, ovs_strerror(error));
1244 close_dpif_backer(backer);
1247 udpif_recv_set(backer->udpif, n_handler_threads,
1248 backer->recv_set_enable);
1249 backer->n_handler_threads = n_handler_threads;
1251 backer->max_n_subfacet = 0;
1252 backer->created = time_msec();
1253 backer->last_minute = backer->created;
1254 memset(&backer->hourly, 0, sizeof backer->hourly);
1255 memset(&backer->daily, 0, sizeof backer->daily);
1256 memset(&backer->lifetime, 0, sizeof backer->lifetime);
1257 backer->subfacet_add_count = 0;
1258 backer->subfacet_del_count = 0;
1259 backer->total_subfacet_add_count = 0;
1260 backer->total_subfacet_del_count = 0;
1261 backer->avg_n_subfacet = 0;
1262 backer->avg_subfacet_life = 0;
1268 construct(struct ofproto *ofproto_)
1270 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1271 struct shash_node *node, *next;
1275 error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
1280 max_ports = dpif_get_max_ports(ofproto->backer->dpif);
1281 ofproto_init_max_ports(ofproto_, MIN(max_ports, ofp_to_u16(OFPP_MAX)));
1283 ofproto->netflow = NULL;
1284 ofproto->sflow = NULL;
1285 ofproto->ipfix = NULL;
1286 ofproto->stp = NULL;
1287 hmap_init(&ofproto->bundles);
1288 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
1289 ofproto->mbridge = mbridge_create();
1290 ofproto->has_bonded_bundles = false;
1291 ovs_mutex_init(&ofproto->vsp_mutex);
1293 classifier_init(&ofproto->facets);
1294 ofproto->consistency_rl = LLONG_MIN;
1296 list_init(&ofproto->completions);
1298 ovs_mutex_init(&ofproto->flow_mod_mutex);
1299 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1300 list_init(&ofproto->flow_mods);
1301 ofproto->n_flow_mods = 0;
1302 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1304 ovs_mutex_init(&ofproto->pin_mutex);
1305 ovs_mutex_lock(&ofproto->pin_mutex);
1306 list_init(&ofproto->pins);
1307 ofproto->n_pins = 0;
1308 ovs_mutex_unlock(&ofproto->pin_mutex);
1310 ofproto_dpif_unixctl_init();
1312 hmap_init(&ofproto->vlandev_map);
1313 hmap_init(&ofproto->realdev_vid_map);
1315 sset_init(&ofproto->ports);
1316 sset_init(&ofproto->ghost_ports);
1317 sset_init(&ofproto->port_poll_set);
1318 ofproto->port_poll_errno = 0;
1320 SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
1321 struct iface_hint *iface_hint = node->data;
1323 if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
1324 /* Check if the datapath already has this port. */
1325 if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
1326 sset_add(&ofproto->ports, node->name);
1329 free(iface_hint->br_name);
1330 free(iface_hint->br_type);
1332 shash_delete(&init_ofp_ports, node);
1336 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
1337 hash_string(ofproto->up.name, 0));
1338 memset(&ofproto->stats, 0, sizeof ofproto->stats);
1340 ofproto_init_tables(ofproto_, N_TABLES);
1341 error = add_internal_flows(ofproto);
1342 ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
1345 ofproto->n_missed = 0;
1351 add_internal_flow(struct ofproto_dpif *ofproto, int id,
1352 const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
1354 struct ofputil_flow_mod fm;
1357 match_init_catchall(&fm.match);
1359 match_set_reg(&fm.match, 0, id);
1360 fm.new_cookie = htonll(0);
1361 fm.cookie = htonll(0);
1362 fm.cookie_mask = htonll(0);
1363 fm.modify_cookie = false;
1364 fm.table_id = TBL_INTERNAL;
1365 fm.command = OFPFC_ADD;
1366 fm.idle_timeout = 0;
1367 fm.hard_timeout = 0;
1371 fm.ofpacts = ofpacts->data;
1372 fm.ofpacts_len = ofpacts->size;
1374 error = ofproto_flow_mod(&ofproto->up, &fm);
1376 VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
1377 id, ofperr_to_string(error));
1381 if (rule_dpif_lookup_in_table(ofproto, &fm.match.flow, NULL, TBL_INTERNAL,
1383 rule_dpif_release(*rulep);
1392 add_internal_flows(struct ofproto_dpif *ofproto)
1394 struct ofpact_controller *controller;
1395 uint64_t ofpacts_stub[128 / 8];
1396 struct ofpbuf ofpacts;
1400 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
1403 controller = ofpact_put_CONTROLLER(&ofpacts);
1404 controller->max_len = UINT16_MAX;
1405 controller->controller_id = 0;
1406 controller->reason = OFPR_NO_MATCH;
1407 ofpact_pad(&ofpacts);
1409 error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
1414 ofpbuf_clear(&ofpacts);
1415 error = add_internal_flow(ofproto, id++, &ofpacts,
1416 &ofproto->no_packet_in_rule);
1421 error = add_internal_flow(ofproto, id++, &ofpacts,
1422 &ofproto->drop_frags_rule);
1427 complete_operations(struct ofproto_dpif *ofproto)
1429 struct dpif_completion *c, *next;
1431 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
1432 ofoperation_complete(c->op, 0);
1433 list_remove(&c->list_node);
1439 destruct(struct ofproto *ofproto_)
1441 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1442 struct rule_dpif *rule, *next_rule;
1443 struct ofputil_packet_in *pin, *next_pin;
1444 struct ofputil_flow_mod *fm, *next_fm;
1445 struct facet *facet, *next_facet;
1446 struct cls_cursor cursor;
1447 struct oftable *table;
1449 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1450 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1451 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1452 CLS_CURSOR_FOR_EACH_SAFE (facet, next_facet, cr, &cursor) {
1453 facet_remove(facet);
1456 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1457 ovs_rwlock_wrlock(&xlate_rwlock);
1458 xlate_remove_ofproto(ofproto);
1459 ovs_rwlock_unlock(&xlate_rwlock);
1461 flow_miss_batch_ofproto_destroyed(ofproto->backer->udpif, ofproto);
1463 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
1464 complete_operations(ofproto);
1466 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1467 struct cls_cursor cursor;
1469 ovs_rwlock_wrlock(&table->cls.rwlock);
1470 cls_cursor_init(&cursor, &table->cls, NULL);
1471 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1472 ofproto_rule_delete(&ofproto->up, &table->cls, &rule->up);
1474 ovs_rwlock_unlock(&table->cls.rwlock);
1476 complete_operations(ofproto);
1478 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1479 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &ofproto->flow_mods) {
1480 list_remove(&fm->list_node);
1481 ofproto->n_flow_mods--;
1485 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1486 ovs_mutex_destroy(&ofproto->flow_mod_mutex);
1488 ovs_mutex_lock(&ofproto->pin_mutex);
1489 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &ofproto->pins) {
1490 list_remove(&pin->list_node);
1492 free(CONST_CAST(void *, pin->packet));
1495 ovs_mutex_unlock(&ofproto->pin_mutex);
1496 ovs_mutex_destroy(&ofproto->pin_mutex);
1498 mbridge_unref(ofproto->mbridge);
1500 netflow_destroy(ofproto->netflow);
1501 dpif_sflow_unref(ofproto->sflow);
1502 hmap_destroy(&ofproto->bundles);
1503 mac_learning_unref(ofproto->ml);
1505 classifier_destroy(&ofproto->facets);
1507 hmap_destroy(&ofproto->vlandev_map);
1508 hmap_destroy(&ofproto->realdev_vid_map);
1510 sset_destroy(&ofproto->ports);
1511 sset_destroy(&ofproto->ghost_ports);
1512 sset_destroy(&ofproto->port_poll_set);
1514 ovs_mutex_destroy(&ofproto->vsp_mutex);
1516 close_dpif_backer(ofproto->backer);
1520 run_fast(struct ofproto *ofproto_)
1522 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1523 struct ofputil_packet_in *pin, *next_pin;
1524 struct ofputil_flow_mod *fm, *next_fm;
1525 struct list flow_mods, pins;
1526 struct ofport_dpif *ofport;
1528 /* Do not perform any periodic activity required by 'ofproto' while
1529 * waiting for flow restore to complete. */
1530 if (ofproto_get_flow_restore_wait()) {
1534 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1535 list_move(&flow_mods, &ofproto->flow_mods);
1536 list_init(&ofproto->flow_mods);
1537 ofproto->n_flow_mods = 0;
1538 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1540 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &flow_mods) {
1541 int error = ofproto_flow_mod(&ofproto->up, fm);
1542 if (error && !VLOG_DROP_WARN(&rl)) {
1543 VLOG_WARN("learning action failed to modify flow table (%s)",
1544 ofperr_get_name(error));
1547 list_remove(&fm->list_node);
1552 ovs_mutex_lock(&ofproto->pin_mutex);
1553 list_move(&pins, &ofproto->pins);
1554 list_init(&ofproto->pins);
1555 ofproto->n_pins = 0;
1556 ovs_mutex_unlock(&ofproto->pin_mutex);
1558 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
1559 connmgr_send_packet_in(ofproto->up.connmgr, pin);
1560 list_remove(&pin->list_node);
1561 free(CONST_CAST(void *, pin->packet));
1565 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1566 port_run_fast(ofport);
1573 run(struct ofproto *ofproto_)
1575 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1576 struct ofport_dpif *ofport;
1577 struct ofbundle *bundle;
1581 complete_operations(ofproto);
1584 if (mbridge_need_revalidate(ofproto->mbridge)) {
1585 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1586 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1587 mac_learning_flush(ofproto->ml);
1588 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1591 /* Do not perform any periodic activity below required by 'ofproto' while
1592 * waiting for flow restore to complete. */
1593 if (ofproto_get_flow_restore_wait()) {
1597 error = run_fast(ofproto_);
1602 if (ofproto->netflow) {
1603 if (netflow_run(ofproto->netflow)) {
1604 send_netflow_active_timeouts(ofproto);
1607 if (ofproto->sflow) {
1608 dpif_sflow_run(ofproto->sflow);
1610 if (ofproto->ipfix) {
1611 dpif_ipfix_run(ofproto->ipfix);
1614 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1617 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1622 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1623 if (mac_learning_run(ofproto->ml)) {
1624 ofproto->backer->need_revalidate = REV_MAC_LEARNING;
1626 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1628 /* Check the consistency of a random facet, to aid debugging. */
1629 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1630 if (time_msec() >= ofproto->consistency_rl
1631 && !classifier_is_empty(&ofproto->facets)
1632 && !ofproto->backer->need_revalidate) {
1633 struct cls_table *table;
1634 struct cls_rule *cr;
1635 struct facet *facet;
1637 ofproto->consistency_rl = time_msec() + 250;
1639 table = CONTAINER_OF(hmap_random_node(&ofproto->facets.tables),
1640 struct cls_table, hmap_node);
1641 cr = CONTAINER_OF(hmap_random_node(&table->rules), struct cls_rule,
1643 facet = CONTAINER_OF(cr, struct facet, cr);
1645 if (!facet_check_consistency(facet)) {
1646 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
1649 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1655 wait(struct ofproto *ofproto_)
1657 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1658 struct ofport_dpif *ofport;
1659 struct ofbundle *bundle;
1661 if (!clogged && !list_is_empty(&ofproto->completions)) {
1662 poll_immediate_wake();
1665 if (ofproto_get_flow_restore_wait()) {
1669 if (ofproto->sflow) {
1670 dpif_sflow_wait(ofproto->sflow);
1672 if (ofproto->ipfix) {
1673 dpif_ipfix_wait(ofproto->ipfix);
1675 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1678 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1679 bundle_wait(bundle);
1681 if (ofproto->netflow) {
1682 netflow_wait(ofproto->netflow);
1684 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
1685 mac_learning_wait(ofproto->ml);
1686 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1688 if (ofproto->backer->need_revalidate) {
1689 /* Shouldn't happen, but if it does just go around again. */
1690 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
1691 poll_immediate_wake();
1696 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
1698 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1699 struct cls_cursor cursor;
1700 size_t n_subfacets = 0;
1701 struct facet *facet;
1703 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1704 simap_increase(usage, "facets", classifier_count(&ofproto->facets));
1705 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1707 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1708 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1709 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
1710 n_subfacets += list_size(&facet->subfacets);
1712 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1713 simap_increase(usage, "subfacets", n_subfacets);
1717 flush(struct ofproto *ofproto_)
1719 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1720 struct subfacet *subfacet, *next_subfacet;
1721 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
1725 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
1726 &ofproto->backer->subfacets) {
1727 if (subfacet->facet->ofproto != ofproto) {
1731 if (subfacet->path != SF_NOT_INSTALLED) {
1732 batch[n_batch++] = subfacet;
1733 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
1734 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1738 subfacet_destroy(subfacet);
1743 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1748 get_features(struct ofproto *ofproto_ OVS_UNUSED,
1749 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
1751 *arp_match_ip = true;
1752 *actions = (OFPUTIL_A_OUTPUT |
1753 OFPUTIL_A_SET_VLAN_VID |
1754 OFPUTIL_A_SET_VLAN_PCP |
1755 OFPUTIL_A_STRIP_VLAN |
1756 OFPUTIL_A_SET_DL_SRC |
1757 OFPUTIL_A_SET_DL_DST |
1758 OFPUTIL_A_SET_NW_SRC |
1759 OFPUTIL_A_SET_NW_DST |
1760 OFPUTIL_A_SET_NW_TOS |
1761 OFPUTIL_A_SET_TP_SRC |
1762 OFPUTIL_A_SET_TP_DST |
1767 get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
1769 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1770 struct dpif_dp_stats s;
1771 uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
1774 strcpy(ots->name, "classifier");
1776 dpif_get_dp_stats(ofproto->backer->dpif, &s);
1777 rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes);
1778 rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in, &n_bytes);
1779 rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags, &n_bytes);
1781 n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
1782 ots->lookup_count = htonll(n_lookup);
1783 ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
1786 static struct ofport *
1789 struct ofport_dpif *port = xmalloc(sizeof *port);
1794 port_dealloc(struct ofport *port_)
1796 struct ofport_dpif *port = ofport_dpif_cast(port_);
1801 port_construct(struct ofport *port_)
1803 struct ofport_dpif *port = ofport_dpif_cast(port_);
1804 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1805 const struct netdev *netdev = port->up.netdev;
1806 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1807 struct dpif_port dpif_port;
1810 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1811 port->bundle = NULL;
1814 port->may_enable = true;
1815 port->stp_port = NULL;
1816 port->stp_state = STP_DISABLED;
1817 port->is_tunnel = false;
1821 port->realdev_ofp_port = 0;
1822 port->vlandev_vid = 0;
1823 port->carrier_seq = netdev_get_carrier_resets(netdev);
1825 if (netdev_vport_is_patch(netdev)) {
1826 /* By bailing out here, we don't submit the port to the sFlow module
1827 * to be considered for counter polling export. This is correct
1828 * because the patch port represents an interface that sFlow considers
1829 * to be "internal" to the switch as a whole, and therefore not an
1830 * candidate for counter polling. */
1831 port->odp_port = ODPP_NONE;
1832 ofport_update_peer(port);
1836 error = dpif_port_query_by_name(ofproto->backer->dpif,
1837 netdev_vport_get_dpif_port(netdev, namebuf,
1844 port->odp_port = dpif_port.port_no;
1846 if (netdev_get_tunnel_config(netdev)) {
1847 tnl_port_add(port, port->up.netdev, port->odp_port);
1848 port->is_tunnel = true;
1850 /* Sanity-check that a mapping doesn't already exist. This
1851 * shouldn't happen for non-tunnel ports. */
1852 if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
1853 VLOG_ERR("port %s already has an OpenFlow port number",
1855 dpif_port_destroy(&dpif_port);
1859 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1860 hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
1861 hash_odp_port(port->odp_port));
1862 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1864 dpif_port_destroy(&dpif_port);
1866 if (ofproto->sflow) {
1867 dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
1874 port_destruct(struct ofport *port_)
1876 struct ofport_dpif *port = ofport_dpif_cast(port_);
1877 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1878 const char *devname = netdev_get_name(port->up.netdev);
1879 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1880 const char *dp_port_name;
1882 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1883 ovs_rwlock_wrlock(&xlate_rwlock);
1884 xlate_ofport_remove(port);
1885 ovs_rwlock_unlock(&xlate_rwlock);
1887 dp_port_name = netdev_vport_get_dpif_port(port->up.netdev, namebuf,
1889 if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
1890 /* The underlying device is still there, so delete it. This
1891 * happens when the ofproto is being destroyed, since the caller
1892 * assumes that removal of attached ports will happen as part of
1894 if (!port->is_tunnel) {
1895 dpif_port_del(ofproto->backer->dpif, port->odp_port);
1900 port->peer->peer = NULL;
1904 if (port->odp_port != ODPP_NONE && !port->is_tunnel) {
1905 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1906 hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
1907 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1911 sset_find_and_delete(&ofproto->ports, devname);
1912 sset_find_and_delete(&ofproto->ghost_ports, devname);
1913 bundle_remove(port_);
1914 set_cfm(port_, NULL);
1915 set_bfd(port_, NULL);
1916 if (ofproto->sflow) {
1917 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1924 port_modified(struct ofport *port_)
1926 struct ofport_dpif *port = ofport_dpif_cast(port_);
1928 if (port->bundle && port->bundle->bond) {
1929 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1933 cfm_set_netdev(port->cfm, port->up.netdev);
1937 bfd_set_netdev(port->bfd, port->up.netdev);
1940 if (port->is_tunnel && tnl_port_reconfigure(port, port->up.netdev,
1942 ofproto_dpif_cast(port->up.ofproto)->backer->need_revalidate =
1946 ofport_update_peer(port);
1950 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1952 struct ofport_dpif *port = ofport_dpif_cast(port_);
1953 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1954 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1956 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1957 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
1958 OFPUTIL_PC_NO_PACKET_IN)) {
1959 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1961 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1962 bundle_update(port->bundle);
1968 set_sflow(struct ofproto *ofproto_,
1969 const struct ofproto_sflow_options *sflow_options)
1971 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1972 struct dpif_sflow *ds = ofproto->sflow;
1974 if (sflow_options) {
1976 struct ofport_dpif *ofport;
1978 ds = ofproto->sflow = dpif_sflow_create();
1979 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1980 dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
1982 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1984 dpif_sflow_set_options(ds, sflow_options);
1987 dpif_sflow_unref(ds);
1988 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1989 ofproto->sflow = NULL;
1997 struct ofproto *ofproto_,
1998 const struct ofproto_ipfix_bridge_exporter_options *bridge_exporter_options,
1999 const struct ofproto_ipfix_flow_exporter_options *flow_exporters_options,
2000 size_t n_flow_exporters_options)
2002 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2003 struct dpif_ipfix *di = ofproto->ipfix;
2004 bool has_options = bridge_exporter_options || flow_exporters_options;
2006 if (has_options && !di) {
2007 di = ofproto->ipfix = dpif_ipfix_create();
2011 /* Call set_options in any case to cleanly flush the flow
2012 * caches in the last exporters that are to be destroyed. */
2013 dpif_ipfix_set_options(
2014 di, bridge_exporter_options, flow_exporters_options,
2015 n_flow_exporters_options);
2018 dpif_ipfix_unref(di);
2019 ofproto->ipfix = NULL;
2027 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
2029 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2036 struct ofproto_dpif *ofproto;
2038 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2039 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2040 ofport->cfm = cfm_create(ofport->up.netdev);
2043 if (cfm_configure(ofport->cfm, s)) {
2049 cfm_unref(ofport->cfm);
2055 get_cfm_status(const struct ofport *ofport_,
2056 struct ofproto_cfm_status *status)
2058 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2061 status->faults = cfm_get_fault(ofport->cfm);
2062 status->remote_opstate = cfm_get_opup(ofport->cfm);
2063 status->health = cfm_get_health(ofport->cfm);
2064 cfm_get_remote_mpids(ofport->cfm, &status->rmps, &status->n_rmps);
2072 set_bfd(struct ofport *ofport_, const struct smap *cfg)
2074 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
2075 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2079 ofport->bfd = bfd_configure(old, netdev_get_name(ofport->up.netdev),
2080 cfg, ofport->up.netdev);
2081 if (ofport->bfd != old) {
2082 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2089 get_bfd_status(struct ofport *ofport_, struct smap *smap)
2091 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2094 bfd_get_status(ofport->bfd, smap);
2101 /* Spanning Tree. */
2104 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
2106 struct ofproto_dpif *ofproto = ofproto_;
2107 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
2108 struct ofport_dpif *ofport;
2110 ofport = stp_port_get_aux(sp);
2112 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
2113 ofproto->up.name, port_num);
2115 struct eth_header *eth = pkt->l2;
2117 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
2118 if (eth_addr_is_zero(eth->eth_src)) {
2119 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
2120 "with unknown MAC", ofproto->up.name, port_num);
2122 send_packet(ofport, pkt);
2128 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
2130 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
2132 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2134 /* Only revalidate flows if the configuration changed. */
2135 if (!s != !ofproto->stp) {
2136 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2140 if (!ofproto->stp) {
2141 ofproto->stp = stp_create(ofproto_->name, s->system_id,
2142 send_bpdu_cb, ofproto);
2143 ofproto->stp_last_tick = time_msec();
2146 stp_set_bridge_id(ofproto->stp, s->system_id);
2147 stp_set_bridge_priority(ofproto->stp, s->priority);
2148 stp_set_hello_time(ofproto->stp, s->hello_time);
2149 stp_set_max_age(ofproto->stp, s->max_age);
2150 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
2152 struct ofport *ofport;
2154 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
2155 set_stp_port(ofport, NULL);
2158 stp_unref(ofproto->stp);
2159 ofproto->stp = NULL;
2166 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
2168 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2172 s->bridge_id = stp_get_bridge_id(ofproto->stp);
2173 s->designated_root = stp_get_designated_root(ofproto->stp);
2174 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
2183 update_stp_port_state(struct ofport_dpif *ofport)
2185 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2186 enum stp_state state;
2188 /* Figure out new state. */
2189 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
2193 if (ofport->stp_state != state) {
2194 enum ofputil_port_state of_state;
2197 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
2198 netdev_get_name(ofport->up.netdev),
2199 stp_state_name(ofport->stp_state),
2200 stp_state_name(state));
2201 if (stp_learn_in_state(ofport->stp_state)
2202 != stp_learn_in_state(state)) {
2203 /* xxx Learning action flows should also be flushed. */
2204 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2205 mac_learning_flush(ofproto->ml);
2206 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2208 fwd_change = stp_forward_in_state(ofport->stp_state)
2209 != stp_forward_in_state(state);
2211 ofproto->backer->need_revalidate = REV_STP;
2212 ofport->stp_state = state;
2213 ofport->stp_state_entered = time_msec();
2215 if (fwd_change && ofport->bundle) {
2216 bundle_update(ofport->bundle);
2219 /* Update the STP state bits in the OpenFlow port description. */
2220 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
2221 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
2222 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
2223 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
2224 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
2226 ofproto_port_set_state(&ofport->up, of_state);
2230 /* Configures STP on 'ofport_' using the settings defined in 's'. The
2231 * caller is responsible for assigning STP port numbers and ensuring
2232 * there are no duplicates. */
2234 set_stp_port(struct ofport *ofport_,
2235 const struct ofproto_port_stp_settings *s)
2237 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2238 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2239 struct stp_port *sp = ofport->stp_port;
2241 if (!s || !s->enable) {
2243 ofport->stp_port = NULL;
2244 stp_port_disable(sp);
2245 update_stp_port_state(ofport);
2248 } else if (sp && stp_port_no(sp) != s->port_num
2249 && ofport == stp_port_get_aux(sp)) {
2250 /* The port-id changed, so disable the old one if it's not
2251 * already in use by another port. */
2252 stp_port_disable(sp);
2255 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
2256 stp_port_enable(sp);
2258 stp_port_set_aux(sp, ofport);
2259 stp_port_set_priority(sp, s->priority);
2260 stp_port_set_path_cost(sp, s->path_cost);
2262 update_stp_port_state(ofport);
2268 get_stp_port_status(struct ofport *ofport_,
2269 struct ofproto_port_stp_status *s)
2271 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2272 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2273 struct stp_port *sp = ofport->stp_port;
2275 if (!ofproto->stp || !sp) {
2281 s->port_id = stp_port_get_id(sp);
2282 s->state = stp_port_get_state(sp);
2283 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
2284 s->role = stp_port_get_role(sp);
2285 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
2291 stp_run(struct ofproto_dpif *ofproto)
2294 long long int now = time_msec();
2295 long long int elapsed = now - ofproto->stp_last_tick;
2296 struct stp_port *sp;
2299 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
2300 ofproto->stp_last_tick = now;
2302 while (stp_get_changed_port(ofproto->stp, &sp)) {
2303 struct ofport_dpif *ofport = stp_port_get_aux(sp);
2306 update_stp_port_state(ofport);
2310 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
2311 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2312 mac_learning_flush(ofproto->ml);
2313 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2319 stp_wait(struct ofproto_dpif *ofproto)
2322 poll_timer_wait(1000);
2327 set_queues(struct ofport *ofport_, const struct ofproto_port_queue *qdscp,
2330 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2331 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2333 if (ofport->n_qdscp != n_qdscp
2334 || (n_qdscp && memcmp(ofport->qdscp, qdscp,
2335 n_qdscp * sizeof *qdscp))) {
2336 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2337 free(ofport->qdscp);
2338 ofport->qdscp = n_qdscp
2339 ? xmemdup(qdscp, n_qdscp * sizeof *qdscp)
2341 ofport->n_qdscp = n_qdscp;
2349 /* Expires all MAC learning entries associated with 'bundle' and forces its
2350 * ofproto to revalidate every flow.
2352 * Normally MAC learning entries are removed only from the ofproto associated
2353 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2354 * are removed from every ofproto. When patch ports and SLB bonds are in use
2355 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2356 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2357 * with the host from which it migrated. */
2359 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
2361 struct ofproto_dpif *ofproto = bundle->ofproto;
2362 struct mac_learning *ml = ofproto->ml;
2363 struct mac_entry *mac, *next_mac;
2365 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2366 ovs_rwlock_wrlock(&ml->rwlock);
2367 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
2368 if (mac->port.p == bundle) {
2370 struct ofproto_dpif *o;
2372 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2374 struct mac_entry *e;
2376 ovs_rwlock_wrlock(&o->ml->rwlock);
2377 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan);
2379 mac_learning_expire(o->ml, e);
2381 ovs_rwlock_unlock(&o->ml->rwlock);
2386 mac_learning_expire(ml, mac);
2389 ovs_rwlock_unlock(&ml->rwlock);
2392 static struct ofbundle *
2393 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
2395 struct ofbundle *bundle;
2397 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
2398 &ofproto->bundles) {
2399 if (bundle->aux == aux) {
2407 bundle_update(struct ofbundle *bundle)
2409 struct ofport_dpif *port;
2411 bundle->floodable = true;
2412 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2413 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2414 || !stp_forward_in_state(port->stp_state)) {
2415 bundle->floodable = false;
2422 bundle_del_port(struct ofport_dpif *port)
2424 struct ofbundle *bundle = port->bundle;
2426 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2428 list_remove(&port->bundle_node);
2429 port->bundle = NULL;
2432 lacp_slave_unregister(bundle->lacp, port);
2435 bond_slave_unregister(bundle->bond, port);
2438 bundle_update(bundle);
2442 bundle_add_port(struct ofbundle *bundle, ofp_port_t ofp_port,
2443 struct lacp_slave_settings *lacp)
2445 struct ofport_dpif *port;
2447 port = get_ofp_port(bundle->ofproto, ofp_port);
2452 if (port->bundle != bundle) {
2453 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2455 bundle_remove(&port->up);
2458 port->bundle = bundle;
2459 list_push_back(&bundle->ports, &port->bundle_node);
2460 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2461 || !stp_forward_in_state(port->stp_state)) {
2462 bundle->floodable = false;
2466 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2467 lacp_slave_register(bundle->lacp, port, lacp);
2474 bundle_destroy(struct ofbundle *bundle)
2476 struct ofproto_dpif *ofproto;
2477 struct ofport_dpif *port, *next_port;
2483 ofproto = bundle->ofproto;
2484 mbridge_unregister_bundle(ofproto->mbridge, bundle->aux);
2486 ovs_rwlock_wrlock(&xlate_rwlock);
2487 xlate_bundle_remove(bundle);
2488 ovs_rwlock_unlock(&xlate_rwlock);
2490 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2491 bundle_del_port(port);
2494 bundle_flush_macs(bundle, true);
2495 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
2497 free(bundle->trunks);
2498 lacp_unref(bundle->lacp);
2499 bond_unref(bundle->bond);
2504 bundle_set(struct ofproto *ofproto_, void *aux,
2505 const struct ofproto_bundle_settings *s)
2507 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2508 bool need_flush = false;
2509 struct ofport_dpif *port;
2510 struct ofbundle *bundle;
2511 unsigned long *trunks;
2517 bundle_destroy(bundle_lookup(ofproto, aux));
2521 ovs_assert(s->n_slaves == 1 || s->bond != NULL);
2522 ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
2524 bundle = bundle_lookup(ofproto, aux);
2526 bundle = xmalloc(sizeof *bundle);
2528 bundle->ofproto = ofproto;
2529 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
2530 hash_pointer(aux, 0));
2532 bundle->name = NULL;
2534 list_init(&bundle->ports);
2535 bundle->vlan_mode = PORT_VLAN_TRUNK;
2537 bundle->trunks = NULL;
2538 bundle->use_priority_tags = s->use_priority_tags;
2539 bundle->lacp = NULL;
2540 bundle->bond = NULL;
2542 bundle->floodable = true;
2543 mbridge_register_bundle(ofproto->mbridge, bundle);
2546 if (!bundle->name || strcmp(s->name, bundle->name)) {
2548 bundle->name = xstrdup(s->name);
2553 if (!bundle->lacp) {
2554 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2555 bundle->lacp = lacp_create();
2557 lacp_configure(bundle->lacp, s->lacp);
2559 lacp_unref(bundle->lacp);
2560 bundle->lacp = NULL;
2563 /* Update set of ports. */
2565 for (i = 0; i < s->n_slaves; i++) {
2566 if (!bundle_add_port(bundle, s->slaves[i],
2567 s->lacp ? &s->lacp_slaves[i] : NULL)) {
2571 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
2572 struct ofport_dpif *next_port;
2574 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2575 for (i = 0; i < s->n_slaves; i++) {
2576 if (s->slaves[i] == port->up.ofp_port) {
2581 bundle_del_port(port);
2585 ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
2587 if (list_is_empty(&bundle->ports)) {
2588 bundle_destroy(bundle);
2592 /* Set VLAN tagging mode */
2593 if (s->vlan_mode != bundle->vlan_mode
2594 || s->use_priority_tags != bundle->use_priority_tags) {
2595 bundle->vlan_mode = s->vlan_mode;
2596 bundle->use_priority_tags = s->use_priority_tags;
2601 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
2602 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
2604 if (vlan != bundle->vlan) {
2605 bundle->vlan = vlan;
2609 /* Get trunked VLANs. */
2610 switch (s->vlan_mode) {
2611 case PORT_VLAN_ACCESS:
2615 case PORT_VLAN_TRUNK:
2616 trunks = CONST_CAST(unsigned long *, s->trunks);
2619 case PORT_VLAN_NATIVE_UNTAGGED:
2620 case PORT_VLAN_NATIVE_TAGGED:
2621 if (vlan != 0 && (!s->trunks
2622 || !bitmap_is_set(s->trunks, vlan)
2623 || bitmap_is_set(s->trunks, 0))) {
2624 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2626 trunks = bitmap_clone(s->trunks, 4096);
2628 trunks = bitmap_allocate1(4096);
2630 bitmap_set1(trunks, vlan);
2631 bitmap_set0(trunks, 0);
2633 trunks = CONST_CAST(unsigned long *, s->trunks);
2640 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
2641 free(bundle->trunks);
2642 if (trunks == s->trunks) {
2643 bundle->trunks = vlan_bitmap_clone(trunks);
2645 bundle->trunks = trunks;
2650 if (trunks != s->trunks) {
2655 if (!list_is_short(&bundle->ports)) {
2656 bundle->ofproto->has_bonded_bundles = true;
2658 if (bond_reconfigure(bundle->bond, s->bond)) {
2659 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2662 bundle->bond = bond_create(s->bond);
2663 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2666 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2667 bond_slave_register(bundle->bond, port, port->up.netdev);
2670 bond_unref(bundle->bond);
2671 bundle->bond = NULL;
2674 /* If we changed something that would affect MAC learning, un-learn
2675 * everything on this port and force flow revalidation. */
2677 bundle_flush_macs(bundle, false);
2684 bundle_remove(struct ofport *port_)
2686 struct ofport_dpif *port = ofport_dpif_cast(port_);
2687 struct ofbundle *bundle = port->bundle;
2690 bundle_del_port(port);
2691 if (list_is_empty(&bundle->ports)) {
2692 bundle_destroy(bundle);
2693 } else if (list_is_short(&bundle->ports)) {
2694 bond_unref(bundle->bond);
2695 bundle->bond = NULL;
2701 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
2703 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
2704 struct ofport_dpif *port = port_;
2705 uint8_t ea[ETH_ADDR_LEN];
2708 error = netdev_get_etheraddr(port->up.netdev, ea);
2710 struct ofpbuf packet;
2713 ofpbuf_init(&packet, 0);
2714 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
2716 memcpy(packet_pdu, pdu, pdu_size);
2718 send_packet(port, &packet);
2719 ofpbuf_uninit(&packet);
2721 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
2722 "%s (%s)", port->bundle->name,
2723 netdev_get_name(port->up.netdev), ovs_strerror(error));
2728 bundle_send_learning_packets(struct ofbundle *bundle)
2730 struct ofproto_dpif *ofproto = bundle->ofproto;
2731 int error, n_packets, n_errors;
2732 struct mac_entry *e;
2734 error = n_packets = n_errors = 0;
2735 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
2736 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
2737 if (e->port.p != bundle) {
2738 struct ofpbuf *learning_packet;
2739 struct ofport_dpif *port;
2743 /* The assignment to "port" is unnecessary but makes "grep"ing for
2744 * struct ofport_dpif more effective. */
2745 learning_packet = bond_compose_learning_packet(bundle->bond,
2749 ret = send_packet(port, learning_packet);
2750 ofpbuf_delete(learning_packet);
2758 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2761 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2762 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2763 "packets, last error was: %s",
2764 bundle->name, n_errors, n_packets, ovs_strerror(error));
2766 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2767 bundle->name, n_packets);
2772 bundle_run(struct ofbundle *bundle)
2775 lacp_run(bundle->lacp, send_pdu_cb);
2778 struct ofport_dpif *port;
2780 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2781 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
2784 if (bond_run(bundle->bond, lacp_status(bundle->lacp))) {
2785 bundle->ofproto->backer->need_revalidate = REV_BOND;
2788 if (bond_should_send_learning_packets(bundle->bond)) {
2789 bundle_send_learning_packets(bundle);
2795 bundle_wait(struct ofbundle *bundle)
2798 lacp_wait(bundle->lacp);
2801 bond_wait(bundle->bond);
2808 mirror_set__(struct ofproto *ofproto_, void *aux,
2809 const struct ofproto_mirror_settings *s)
2811 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2812 struct ofbundle **srcs, **dsts;
2817 mirror_destroy(ofproto->mbridge, aux);
2821 srcs = xmalloc(s->n_srcs * sizeof *srcs);
2822 dsts = xmalloc(s->n_dsts * sizeof *dsts);
2824 for (i = 0; i < s->n_srcs; i++) {
2825 srcs[i] = bundle_lookup(ofproto, s->srcs[i]);
2828 for (i = 0; i < s->n_dsts; i++) {
2829 dsts[i] = bundle_lookup(ofproto, s->dsts[i]);
2832 error = mirror_set(ofproto->mbridge, aux, s->name, srcs, s->n_srcs, dsts,
2833 s->n_dsts, s->src_vlans,
2834 bundle_lookup(ofproto, s->out_bundle), s->out_vlan);
2841 mirror_get_stats__(struct ofproto *ofproto, void *aux,
2842 uint64_t *packets, uint64_t *bytes)
2845 return mirror_get_stats(ofproto_dpif_cast(ofproto)->mbridge, aux, packets,
2850 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2852 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2853 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2854 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2855 mac_learning_flush(ofproto->ml);
2857 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2862 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2864 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2865 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2866 return bundle && mirror_bundle_out(ofproto->mbridge, bundle) != 0;
2870 forward_bpdu_changed(struct ofproto *ofproto_)
2872 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2873 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2877 set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
2880 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2881 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2882 mac_learning_set_idle_time(ofproto->ml, idle_time);
2883 mac_learning_set_max_entries(ofproto->ml, max_entries);
2884 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2889 static struct ofport_dpif *
2890 get_ofp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
2892 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2893 return ofport ? ofport_dpif_cast(ofport) : NULL;
2896 static struct ofport_dpif *
2897 get_odp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
2899 struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
2900 return port && &ofproto->up == port->up.ofproto ? port : NULL;
2904 ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
2905 struct ofproto_port *ofproto_port,
2906 struct dpif_port *dpif_port)
2908 ofproto_port->name = dpif_port->name;
2909 ofproto_port->type = dpif_port->type;
2910 ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
2914 ofport_update_peer(struct ofport_dpif *ofport)
2916 const struct ofproto_dpif *ofproto;
2917 struct dpif_backer *backer;
2920 if (!netdev_vport_is_patch(ofport->up.netdev)) {
2924 backer = ofproto_dpif_cast(ofport->up.ofproto)->backer;
2925 backer->need_revalidate = REV_RECONFIGURE;
2928 ofport->peer->peer = NULL;
2929 ofport->peer = NULL;
2932 peer_name = netdev_vport_patch_peer(ofport->up.netdev);
2937 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2938 struct ofport *peer_ofport;
2939 struct ofport_dpif *peer;
2942 if (ofproto->backer != backer) {
2946 peer_ofport = shash_find_data(&ofproto->up.port_by_name, peer_name);
2951 peer = ofport_dpif_cast(peer_ofport);
2952 peer_peer = netdev_vport_patch_peer(peer->up.netdev);
2953 if (peer_peer && !strcmp(netdev_get_name(ofport->up.netdev),
2955 ofport->peer = peer;
2956 ofport->peer->peer = ofport;
2966 port_run_fast(struct ofport_dpif *ofport)
2968 if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
2969 struct ofpbuf packet;
2971 ofpbuf_init(&packet, 0);
2972 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2973 send_packet(ofport, &packet);
2974 ofpbuf_uninit(&packet);
2977 if (ofport->bfd && bfd_should_send_packet(ofport->bfd)) {
2978 struct ofpbuf packet;
2980 ofpbuf_init(&packet, 0);
2981 bfd_put_packet(ofport->bfd, &packet, ofport->up.pp.hw_addr);
2982 send_packet(ofport, &packet);
2983 ofpbuf_uninit(&packet);
2988 port_run(struct ofport_dpif *ofport)
2990 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2991 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2992 bool enable = netdev_get_carrier(ofport->up.netdev);
2993 bool cfm_enable = false;
2994 bool bfd_enable = false;
2996 ofport->carrier_seq = carrier_seq;
2998 port_run_fast(ofport);
3001 int cfm_opup = cfm_get_opup(ofport->cfm);
3003 cfm_run(ofport->cfm);
3004 cfm_enable = !cfm_get_fault(ofport->cfm);
3006 if (cfm_opup >= 0) {
3007 cfm_enable = cfm_enable && cfm_opup;
3012 bfd_run(ofport->bfd);
3013 bfd_enable = bfd_forwarding(ofport->bfd);
3016 if (ofport->bfd || ofport->cfm) {
3017 enable = enable && (cfm_enable || bfd_enable);
3020 if (ofport->bundle) {
3021 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
3022 if (carrier_changed) {
3023 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
3027 if (ofport->may_enable != enable) {
3028 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3029 ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
3032 ofport->may_enable = enable;
3036 port_wait(struct ofport_dpif *ofport)
3039 cfm_wait(ofport->cfm);
3043 bfd_wait(ofport->bfd);
3048 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
3049 struct ofproto_port *ofproto_port)
3051 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3052 struct dpif_port dpif_port;
3055 if (sset_contains(&ofproto->ghost_ports, devname)) {
3056 const char *type = netdev_get_type_from_name(devname);
3058 /* We may be called before ofproto->up.port_by_name is populated with
3059 * the appropriate ofport. For this reason, we must get the name and
3060 * type from the netdev layer directly. */
3062 const struct ofport *ofport;
3064 ofport = shash_find_data(&ofproto->up.port_by_name, devname);
3065 ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
3066 ofproto_port->name = xstrdup(devname);
3067 ofproto_port->type = xstrdup(type);
3073 if (!sset_contains(&ofproto->ports, devname)) {
3076 error = dpif_port_query_by_name(ofproto->backer->dpif,
3077 devname, &dpif_port);
3079 ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
3085 port_add(struct ofproto *ofproto_, struct netdev *netdev)
3087 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3088 const char *devname = netdev_get_name(netdev);
3089 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
3090 const char *dp_port_name;
3092 if (netdev_vport_is_patch(netdev)) {
3093 sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
3097 dp_port_name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
3098 if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
3099 odp_port_t port_no = ODPP_NONE;
3102 error = dpif_port_add(ofproto->backer->dpif, netdev, &port_no);
3106 if (netdev_get_tunnel_config(netdev)) {
3107 simap_put(&ofproto->backer->tnl_backers,
3108 dp_port_name, odp_to_u32(port_no));
3112 if (netdev_get_tunnel_config(netdev)) {
3113 sset_add(&ofproto->ghost_ports, devname);
3115 sset_add(&ofproto->ports, devname);
3121 port_del(struct ofproto *ofproto_, ofp_port_t ofp_port)
3123 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3124 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
3131 sset_find_and_delete(&ofproto->ghost_ports,
3132 netdev_get_name(ofport->up.netdev));
3133 ofproto->backer->need_revalidate = REV_RECONFIGURE;
3134 if (!ofport->is_tunnel && !netdev_vport_is_patch(ofport->up.netdev)) {
3135 error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
3137 /* The caller is going to close ofport->up.netdev. If this is a
3138 * bonded port, then the bond is using that netdev, so remove it
3139 * from the bond. The client will need to reconfigure everything
3140 * after deleting ports, so then the slave will get re-added. */
3141 bundle_remove(&ofport->up);
3148 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
3150 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3155 error = netdev_get_stats(ofport->up.netdev, stats);
3157 if (!error && ofport_->ofp_port == OFPP_LOCAL) {
3158 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3160 /* ofproto->stats.tx_packets represents packets that we created
3161 * internally and sent to some port (e.g. packets sent with
3162 * send_packet()). Account for them as if they had come from
3163 * OFPP_LOCAL and got forwarded. */
3165 if (stats->rx_packets != UINT64_MAX) {
3166 stats->rx_packets += ofproto->stats.tx_packets;
3169 if (stats->rx_bytes != UINT64_MAX) {
3170 stats->rx_bytes += ofproto->stats.tx_bytes;
3173 /* ofproto->stats.rx_packets represents packets that were received on
3174 * some port and we processed internally and dropped (e.g. STP).
3175 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3177 if (stats->tx_packets != UINT64_MAX) {
3178 stats->tx_packets += ofproto->stats.rx_packets;
3181 if (stats->tx_bytes != UINT64_MAX) {
3182 stats->tx_bytes += ofproto->stats.rx_bytes;
3189 struct port_dump_state {
3194 struct ofproto_port port;
3199 port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
3201 *statep = xzalloc(sizeof(struct port_dump_state));
3206 port_dump_next(const struct ofproto *ofproto_, void *state_,
3207 struct ofproto_port *port)
3209 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3210 struct port_dump_state *state = state_;
3211 const struct sset *sset;
3212 struct sset_node *node;
3214 if (state->has_port) {
3215 ofproto_port_destroy(&state->port);
3216 state->has_port = false;
3218 sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
3219 while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
3222 error = port_query_by_name(ofproto_, node->name, &state->port);
3224 *port = state->port;
3225 state->has_port = true;
3227 } else if (error != ENODEV) {
3232 if (!state->ghost) {
3233 state->ghost = true;
3236 return port_dump_next(ofproto_, state_, port);
3243 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
3245 struct port_dump_state *state = state_;
3247 if (state->has_port) {
3248 ofproto_port_destroy(&state->port);
3255 port_poll(const struct ofproto *ofproto_, char **devnamep)
3257 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3259 if (ofproto->port_poll_errno) {
3260 int error = ofproto->port_poll_errno;
3261 ofproto->port_poll_errno = 0;
3265 if (sset_is_empty(&ofproto->port_poll_set)) {
3269 *devnamep = sset_pop(&ofproto->port_poll_set);
3274 port_poll_wait(const struct ofproto *ofproto_)
3276 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3277 dpif_port_poll_wait(ofproto->backer->dpif);
3281 port_is_lacp_current(const struct ofport *ofport_)
3283 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3284 return (ofport->bundle && ofport->bundle->lacp
3285 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
3289 /* Upcall handling. */
3291 struct flow_miss_op {
3292 struct dpif_op dpif_op;
3294 uint64_t slow_stub[128 / 8]; /* Buffer for compose_slow_path() */
3295 struct xlate_out xout;
3296 bool xout_garbage; /* 'xout' needs to be uninitialized? */
3298 struct ofpbuf mask; /* Flow mask for "put" ops. */
3299 struct odputil_keybuf maskbuf;
3301 /* If this is a "put" op, then a pointer to the subfacet that should
3302 * be marked as uninstalled if the operation fails. */
3303 struct subfacet *subfacet;
3306 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3307 * 'miss' masked by 'wc', is likely to be worth tracking in detail in userspace
3308 * and (usually) installing a datapath flow. The answer is usually "yes" (a
3309 * return value of true). However, for short flows the cost of bookkeeping is
3310 * much higher than the benefits, so when the datapath holds a large number of
3311 * flows we impose some heuristics to decide which flows are likely to be worth
3314 flow_miss_should_make_facet(struct flow_miss *miss)
3316 struct dpif_backer *backer = miss->ofproto->backer;
3319 switch (flow_miss_model) {
3320 case OFPROTO_HANDLE_MISS_AUTO:
3322 case OFPROTO_HANDLE_MISS_WITH_FACETS:
3324 case OFPROTO_HANDLE_MISS_WITHOUT_FACETS:
3328 if (!backer->governor) {
3331 n_subfacets = hmap_count(&backer->subfacets);
3332 if (n_subfacets * 2 <= flow_eviction_threshold) {
3336 backer->governor = governor_create();
3339 hash = flow_hash_in_wildcards(&miss->flow, &miss->xout.wc, 0);
3340 return governor_should_install_flow(backer->governor, hash,
3341 list_size(&miss->packets));
3344 /* Handles 'miss', which matches 'facet'. May add any required datapath
3345 * operations to 'ops', incrementing '*n_ops' for each new op.
3347 * All of the packets in 'miss' are considered to have arrived at time
3348 * 'miss->stats.used'. This is really important only for new facets: if we
3349 * just called time_msec() here, then the new subfacet or its packets could
3350 * look (occasionally) as though it was used some time after the facet was
3351 * used. That can make a one-packet flow look like it has a nonzero duration,
3352 * which looks odd in e.g. NetFlow statistics. */
3354 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
3355 struct flow_miss_op *ops, size_t *n_ops)
3357 enum subfacet_path want_path;
3358 struct subfacet *subfacet;
3360 facet->packet_count += miss->stats.n_packets;
3361 facet->prev_packet_count += miss->stats.n_packets;
3362 facet->byte_count += miss->stats.n_bytes;
3363 facet->prev_byte_count += miss->stats.n_bytes;
3365 want_path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
3367 /* Don't install the flow if it's the result of the "userspace"
3368 * action for an already installed facet. This can occur when a
3369 * datapath flow with wildcards has a "userspace" action and flows
3370 * sent to userspace result in a different subfacet, which will then
3371 * be rejected as overlapping by the datapath. */
3372 if (miss->upcall_type == DPIF_UC_ACTION
3373 && !list_is_empty(&facet->subfacets)) {
3377 subfacet = subfacet_create(facet, miss);
3378 if (subfacet->path != want_path) {
3379 struct flow_miss_op *op = &ops[(*n_ops)++];
3380 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
3382 subfacet->path = want_path;
3384 ofpbuf_use_stack(&op->mask, &op->maskbuf, sizeof op->maskbuf);
3385 if (enable_megaflows) {
3386 odp_flow_key_from_mask(&op->mask, &facet->xout.wc.masks,
3387 &miss->flow, UINT32_MAX);
3390 op->xout_garbage = false;
3391 op->dpif_op.type = DPIF_OP_FLOW_PUT;
3392 op->subfacet = subfacet;
3393 put->flags = DPIF_FP_CREATE;
3394 put->key = miss->key;
3395 put->key_len = miss->key_len;
3396 put->mask = op->mask.data;
3397 put->mask_len = op->mask.size;
3399 if (want_path == SF_FAST_PATH) {
3400 put->actions = facet->xout.odp_actions.data;
3401 put->actions_len = facet->xout.odp_actions.size;
3403 compose_slow_path(facet->ofproto, &miss->flow, facet->xout.slow,
3404 op->slow_stub, sizeof op->slow_stub,
3405 &put->actions, &put->actions_len);
3411 /* Handles flow miss 'miss'. May add any required datapath operations
3412 * to 'ops', incrementing '*n_ops' for each new op. */
3414 handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
3417 struct facet *facet;
3419 miss->ofproto->n_missed += list_size(&miss->packets);
3421 facet = facet_lookup_valid(miss->ofproto, &miss->flow);
3423 /* There does not exist a bijection between 'struct flow' and datapath
3424 * flow keys with fitness ODP_FIT_TO_LITTLE. This breaks a fundamental
3425 * assumption used throughout the facet and subfacet handling code.
3426 * Since we have to handle these misses in userspace anyway, we simply
3427 * skip facet creation, avoiding the problem altogether. */
3428 if (miss->key_fitness == ODP_FIT_TOO_LITTLE
3429 || !flow_miss_should_make_facet(miss)) {
3433 facet = facet_create(miss);
3435 handle_flow_miss_with_facet(miss, facet, ops, n_ops);
3438 static struct drop_key *
3439 drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
3442 struct drop_key *drop_key;
3444 HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
3445 &backer->drop_keys) {
3446 if (drop_key->key_len == key_len
3447 && !memcmp(drop_key->key, key, key_len)) {
3455 drop_key_clear(struct dpif_backer *backer)
3457 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3458 struct drop_key *drop_key, *next;
3460 HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
3463 error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
3465 if (error && !VLOG_DROP_WARN(&rl)) {
3466 struct ds ds = DS_EMPTY_INITIALIZER;
3467 odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
3468 VLOG_WARN("Failed to delete drop key (%s) (%s)",
3469 ovs_strerror(error), ds_cstr(&ds));
3473 hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
3474 drop_key_destroy(drop_key);
3477 udpif_drop_key_clear(backer->udpif);
3481 handle_flow_misses(struct dpif_backer *backer, struct flow_miss_batch *fmb)
3483 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH];
3484 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH];
3485 struct flow_miss *miss;
3488 /* Process each element in the to-do list, constructing the set of
3489 * operations to batch. */
3491 HMAP_FOR_EACH (miss, hmap_node, &fmb->misses) {
3492 handle_flow_miss(miss, flow_miss_ops, &n_ops);
3494 ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
3496 /* Execute batch. */
3497 for (i = 0; i < n_ops; i++) {
3498 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
3500 dpif_operate(backer->dpif, dpif_ops, n_ops);
3502 for (i = 0; i < n_ops; i++) {
3503 if (dpif_ops[i]->error != 0
3504 && flow_miss_ops[i].dpif_op.type == DPIF_OP_FLOW_PUT
3505 && flow_miss_ops[i].subfacet) {
3506 struct subfacet *subfacet = flow_miss_ops[i].subfacet;
3508 COVERAGE_INC(subfacet_install_fail);
3510 /* Zero-out subfacet counters when installation failed, but
3511 * datapath reported hits. This should not happen and
3512 * indicates a bug, since if the datapath flow exists, we
3513 * should not be attempting to create a new subfacet. A
3514 * buggy datapath could trigger this, so just zero out the
3515 * counters and log an error. */
3516 if (subfacet->dp_packet_count || subfacet->dp_byte_count) {
3517 VLOG_ERR_RL(&rl, "failed to install subfacet for which "
3518 "datapath reported hits");
3519 subfacet->dp_packet_count = subfacet->dp_byte_count = 0;
3522 subfacet->path = SF_NOT_INSTALLED;
3528 handle_sflow_upcall(struct dpif_backer *backer,
3529 const struct dpif_upcall *upcall)
3531 struct ofproto_dpif *ofproto;
3532 union user_action_cookie cookie;
3534 odp_port_t odp_in_port;
3536 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3537 &flow, NULL, &ofproto, &odp_in_port)
3538 || !ofproto->sflow) {
3542 memset(&cookie, 0, sizeof cookie);
3543 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.sflow);
3544 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
3545 odp_in_port, &cookie);
3549 handle_flow_sample_upcall(struct dpif_backer *backer,
3550 const struct dpif_upcall *upcall)
3552 struct ofproto_dpif *ofproto;
3553 union user_action_cookie cookie;
3556 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3557 &flow, NULL, &ofproto, NULL)
3558 || !ofproto->ipfix) {
3562 memset(&cookie, 0, sizeof cookie);
3563 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.flow_sample);
3565 /* The flow reflects exactly the contents of the packet. Sample
3566 * the packet using it. */
3567 dpif_ipfix_flow_sample(ofproto->ipfix, upcall->packet, &flow,
3568 cookie.flow_sample.collector_set_id,
3569 cookie.flow_sample.probability,
3570 cookie.flow_sample.obs_domain_id,
3571 cookie.flow_sample.obs_point_id);
3575 handle_ipfix_upcall(struct dpif_backer *backer,
3576 const struct dpif_upcall *upcall)
3578 struct ofproto_dpif *ofproto;
3581 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3582 &flow, NULL, &ofproto, NULL)
3583 || !ofproto->ipfix) {
3587 /* The flow reflects exactly the contents of the packet. Sample
3588 * the packet using it. */
3589 dpif_ipfix_bridge_sample(ofproto->ipfix, upcall->packet, &flow);
3593 handle_upcalls(struct dpif_backer *backer)
3595 struct flow_miss_batch *fmb;
3598 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3599 struct upcall *upcall = upcall_next(backer->udpif);
3605 switch (upcall->type) {
3607 handle_sflow_upcall(backer, &upcall->dpif_upcall);
3610 case FLOW_SAMPLE_UPCALL:
3611 handle_flow_sample_upcall(backer, &upcall->dpif_upcall);
3615 handle_ipfix_upcall(backer, &upcall->dpif_upcall);
3625 upcall_destroy(upcall);
3628 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3629 struct drop_key *drop_key = drop_key_next(backer->udpif);
3634 if (!drop_key_lookup(backer, drop_key->key, drop_key->key_len)) {
3635 hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
3636 hash_bytes(drop_key->key, drop_key->key_len, 0));
3637 dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
3638 drop_key->key, drop_key->key_len,
3639 NULL, 0, NULL, 0, NULL);
3641 drop_key_destroy(drop_key);
3645 fmb = flow_miss_batch_next(backer->udpif);
3647 handle_flow_misses(backer, fmb);
3648 flow_miss_batch_destroy(fmb);
3652 /* Flow expiration. */
3654 static int subfacet_max_idle(const struct dpif_backer *);
3655 static void update_stats(struct dpif_backer *);
3656 static void rule_expire(struct rule_dpif *);
3657 static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
3659 /* This function is called periodically by run(). Its job is to collect
3660 * updates for the flows that have been installed into the datapath, most
3661 * importantly when they last were used, and then use that information to
3662 * expire flows that have not been used recently.
3664 * Returns the number of milliseconds after which it should be called again. */
3666 expire(struct dpif_backer *backer)
3668 struct ofproto_dpif *ofproto;
3672 /* Periodically clear out the drop keys in an effort to keep them
3673 * relatively few. */
3674 drop_key_clear(backer);
3676 /* Update stats for each flow in the backer. */
3677 update_stats(backer);
3679 n_subfacets = hmap_count(&backer->subfacets);
3681 struct subfacet *subfacet;
3682 long long int total, now;
3686 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3687 total += now - subfacet->created;
3689 backer->avg_subfacet_life += total / n_subfacets;
3691 backer->avg_subfacet_life /= 2;
3693 backer->avg_n_subfacet += n_subfacets;
3694 backer->avg_n_subfacet /= 2;
3696 backer->max_n_subfacet = MAX(backer->max_n_subfacet, n_subfacets);
3698 max_idle = subfacet_max_idle(backer);
3699 expire_subfacets(backer, max_idle);
3701 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
3702 struct rule *rule, *next_rule;
3704 if (ofproto->backer != backer) {
3708 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
3710 ovs_mutex_lock(&ofproto->up.expirable_mutex);
3711 LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
3712 &ofproto->up.expirable) {
3713 rule_expire(rule_dpif_cast(rule));
3715 ovs_mutex_unlock(&ofproto->up.expirable_mutex);
3717 /* All outstanding data in existing flows has been accounted, so it's a
3718 * good time to do bond rebalancing. */
3719 if (ofproto->has_bonded_bundles) {
3720 struct ofbundle *bundle;
3722 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
3724 bond_rebalance(bundle->bond);
3730 return MIN(max_idle, 1000);
3733 /* Updates flow table statistics given that the datapath just reported 'stats'
3734 * as 'subfacet''s statistics. */
3736 update_subfacet_stats(struct subfacet *subfacet,
3737 const struct dpif_flow_stats *stats)
3739 struct facet *facet = subfacet->facet;
3740 struct dpif_flow_stats diff;
3742 diff.tcp_flags = stats->tcp_flags;
3743 diff.used = stats->used;
3745 if (stats->n_packets >= subfacet->dp_packet_count) {
3746 diff.n_packets = stats->n_packets - subfacet->dp_packet_count;
3748 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
3752 if (stats->n_bytes >= subfacet->dp_byte_count) {
3753 diff.n_bytes = stats->n_bytes - subfacet->dp_byte_count;
3755 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
3759 facet->ofproto->n_hit += diff.n_packets;
3760 subfacet->dp_packet_count = stats->n_packets;
3761 subfacet->dp_byte_count = stats->n_bytes;
3762 subfacet_update_stats(subfacet, &diff);
3764 if (facet->accounted_bytes < facet->byte_count) {
3766 facet_account(facet);
3767 facet->accounted_bytes = facet->byte_count;
3771 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
3772 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
3774 delete_unexpected_flow(struct dpif_backer *backer,
3775 const struct nlattr *key, size_t key_len)
3777 if (!VLOG_DROP_WARN(&rl)) {
3781 odp_flow_key_format(key, key_len, &s);
3782 VLOG_WARN("unexpected flow: %s", ds_cstr(&s));
3786 COVERAGE_INC(facet_unexpected);
3787 dpif_flow_del(backer->dpif, key, key_len, NULL);
3790 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3792 * This function also pushes statistics updates to rules which each facet
3793 * resubmits into. Generally these statistics will be accurate. However, if a
3794 * facet changes the rule it resubmits into at some time in between
3795 * update_stats() runs, it is possible that statistics accrued to the
3796 * old rule will be incorrectly attributed to the new rule. This could be
3797 * avoided by calling update_stats() whenever rules are created or
3798 * deleted. However, the performance impact of making so many calls to the
3799 * datapath do not justify the benefit of having perfectly accurate statistics.
3801 * In addition, this function maintains per ofproto flow hit counts. The patch
3802 * port is not treated specially. e.g. A packet ingress from br0 patched into
3803 * br1 will increase the hit count of br0 by 1, however, does not affect
3804 * the hit or miss counts of br1.
3807 update_stats(struct dpif_backer *backer)
3809 const struct dpif_flow_stats *stats;
3810 struct dpif_flow_dump dump;
3811 const struct nlattr *key, *mask;
3812 size_t key_len, mask_len;
3814 dpif_flow_dump_start(&dump, backer->dpif);
3815 while (dpif_flow_dump_next(&dump, &key, &key_len,
3816 &mask, &mask_len, NULL, NULL, &stats)) {
3817 struct subfacet *subfacet;
3820 key_hash = odp_flow_key_hash(key, key_len);
3821 subfacet = subfacet_find(backer, key, key_len, key_hash);
3822 switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
3824 update_subfacet_stats(subfacet, stats);
3828 /* Stats are updated per-packet. */
3831 case SF_NOT_INSTALLED:
3833 delete_unexpected_flow(backer, key, key_len);
3838 dpif_flow_dump_done(&dump);
3840 update_moving_averages(backer);
3843 /* Calculates and returns the number of milliseconds of idle time after which
3844 * subfacets should expire from the datapath. When a subfacet expires, we fold
3845 * its statistics into its facet, and when a facet's last subfacet expires, we
3846 * fold its statistic into its rule. */
3848 subfacet_max_idle(const struct dpif_backer *backer)
3851 * Idle time histogram.
3853 * Most of the time a switch has a relatively small number of subfacets.
3854 * When this is the case we might as well keep statistics for all of them
3855 * in userspace and to cache them in the kernel datapath for performance as
3858 * As the number of subfacets increases, the memory required to maintain
3859 * statistics about them in userspace and in the kernel becomes
3860 * significant. However, with a large number of subfacets it is likely
3861 * that only a few of them are "heavy hitters" that consume a large amount
3862 * of bandwidth. At this point, only heavy hitters are worth caching in
3863 * the kernel and maintaining in userspaces; other subfacets we can
3866 * The technique used to compute the idle time is to build a histogram with
3867 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3868 * that is installed in the kernel gets dropped in the appropriate bucket.
3869 * After the histogram has been built, we compute the cutoff so that only
3870 * the most-recently-used 1% of subfacets (but at least
3871 * flow_eviction_threshold flows) are kept cached. At least
3872 * the most-recently-used bucket of subfacets is kept, so actually an
3873 * arbitrary number of subfacets can be kept in any given expiration run
3874 * (though the next run will delete most of those unless they receive
3877 * This requires a second pass through the subfacets, in addition to the
3878 * pass made by update_stats(), because the former function never looks at
3879 * uninstallable subfacets.
3881 enum { BUCKET_WIDTH = 100 };
3882 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3883 int buckets[N_BUCKETS] = { 0 };
3884 int total, subtotal, bucket;
3885 struct subfacet *subfacet;
3889 total = hmap_count(&backer->subfacets);
3890 if (total <= flow_eviction_threshold) {
3891 return N_BUCKETS * BUCKET_WIDTH;
3894 /* Build histogram. */
3896 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3897 long long int idle = now - subfacet->used;
3898 int bucket = (idle <= 0 ? 0
3899 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3900 : (unsigned int) idle / BUCKET_WIDTH);
3904 /* Find the first bucket whose flows should be expired. */
3905 subtotal = bucket = 0;
3907 subtotal += buckets[bucket++];
3908 } while (bucket < N_BUCKETS &&
3909 subtotal < MAX(flow_eviction_threshold, total / 100));
3911 if (VLOG_IS_DBG_ENABLED()) {
3915 ds_put_cstr(&s, "keep");
3916 for (i = 0; i < N_BUCKETS; i++) {
3918 ds_put_cstr(&s, ", drop");
3921 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3924 VLOG_INFO("%s (msec:count)", ds_cstr(&s));
3928 return bucket * BUCKET_WIDTH;
3932 expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
3934 /* Cutoff time for most flows. */
3935 long long int normal_cutoff = time_msec() - dp_max_idle;
3937 /* We really want to keep flows for special protocols around, so use a more
3938 * conservative cutoff. */
3939 long long int special_cutoff = time_msec() - 10000;
3941 struct subfacet *subfacet, *next_subfacet;
3942 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
3946 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3947 &backer->subfacets) {
3948 long long int cutoff;
3950 cutoff = (subfacet->facet->xout.slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP
3954 if (subfacet->used < cutoff) {
3955 if (subfacet->path != SF_NOT_INSTALLED) {
3956 batch[n_batch++] = subfacet;
3957 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
3958 subfacet_destroy_batch(backer, batch, n_batch);
3962 subfacet_destroy(subfacet);
3968 subfacet_destroy_batch(backer, batch, n_batch);
3972 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3973 * then delete it entirely. */
3975 rule_expire(struct rule_dpif *rule)
3977 uint16_t idle_timeout, hard_timeout;
3981 if (rule->up.pending) {
3982 /* We'll have to expire it later. */
3986 ovs_mutex_lock(&rule->up.timeout_mutex);
3987 hard_timeout = rule->up.hard_timeout;
3988 idle_timeout = rule->up.idle_timeout;
3989 ovs_mutex_unlock(&rule->up.timeout_mutex);
3991 /* Has 'rule' expired? */
3993 if (hard_timeout && now > rule->up.modified + hard_timeout * 1000) {
3994 reason = OFPRR_HARD_TIMEOUT;
3995 } else if (idle_timeout && now > rule->up.used + idle_timeout * 1000) {
3996 reason = OFPRR_IDLE_TIMEOUT;
4001 COVERAGE_INC(ofproto_dpif_expired);
4002 ofproto_rule_expire(&rule->up, reason);
4007 /* Creates and returns a new facet based on 'miss'.
4009 * The caller must already have determined that no facet with an identical
4010 * 'miss->flow' exists in 'miss->ofproto'.
4012 * 'rule' and 'xout' must have been created based on 'miss'.
4014 * 'facet'' statistics are initialized based on 'stats'.
4016 * The facet will initially have no subfacets. The caller should create (at
4017 * least) one subfacet with subfacet_create(). */
4018 static struct facet *
4019 facet_create(const struct flow_miss *miss)
4021 struct ofproto_dpif *ofproto = miss->ofproto;
4022 struct facet *facet;
4025 facet = xzalloc(sizeof *facet);
4026 facet->ofproto = miss->ofproto;
4027 facet->used = miss->stats.used;
4028 facet->flow = miss->flow;
4029 facet->learn_rl = time_msec() + 500;
4031 list_init(&facet->subfacets);
4032 netflow_flow_init(&facet->nf_flow);
4033 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
4035 xlate_out_copy(&facet->xout, &miss->xout);
4037 match_init(&match, &facet->flow, &facet->xout.wc);
4038 cls_rule_init(&facet->cr, &match, OFP_DEFAULT_PRIORITY);
4039 ovs_rwlock_wrlock(&ofproto->facets.rwlock);
4040 classifier_insert(&ofproto->facets, &facet->cr);
4041 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4043 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4048 facet_free(struct facet *facet)
4051 xlate_out_uninit(&facet->xout);
4056 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4057 * 'packet', which arrived on 'in_port'. */
4059 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
4060 const struct nlattr *odp_actions, size_t actions_len,
4061 struct ofpbuf *packet)
4063 struct odputil_keybuf keybuf;
4067 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4068 odp_flow_key_from_flow(&key, flow,
4069 ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port));
4071 error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
4072 odp_actions, actions_len, packet);
4076 /* Remove 'facet' from its ofproto and free up the associated memory:
4078 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4079 * rule's statistics, via subfacet_uninstall().
4081 * - Removes 'facet' from its rule and from ofproto->facets.
4084 facet_remove(struct facet *facet)
4086 struct subfacet *subfacet, *next_subfacet;
4088 ovs_assert(!list_is_empty(&facet->subfacets));
4090 /* First uninstall all of the subfacets to get final statistics. */
4091 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4092 subfacet_uninstall(subfacet);
4095 /* Flush the final stats to the rule.
4097 * This might require us to have at least one subfacet around so that we
4098 * can use its actions for accounting in facet_account(), which is why we
4099 * have uninstalled but not yet destroyed the subfacets. */
4100 facet_flush_stats(facet);
4102 /* Now we're really all done so destroy everything. */
4103 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
4104 &facet->subfacets) {
4105 subfacet_destroy__(subfacet);
4107 ovs_rwlock_wrlock(&facet->ofproto->facets.rwlock);
4108 classifier_remove(&facet->ofproto->facets, &facet->cr);
4109 ovs_rwlock_unlock(&facet->ofproto->facets.rwlock);
4110 cls_rule_destroy(&facet->cr);
4114 /* Feed information from 'facet' back into the learning table to keep it in
4115 * sync with what is actually flowing through the datapath. */
4117 facet_learn(struct facet *facet)
4119 long long int now = time_msec();
4121 if (!facet->xout.has_fin_timeout && now < facet->learn_rl) {
4125 facet->learn_rl = now + 500;
4127 if (!facet->xout.has_learn
4128 && !facet->xout.has_normal
4129 && (!facet->xout.has_fin_timeout
4130 || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
4134 facet_push_stats(facet, true);
4138 facet_account(struct facet *facet)
4140 const struct nlattr *a;
4145 if (!facet->xout.has_normal || !facet->ofproto->has_bonded_bundles) {
4148 n_bytes = facet->byte_count - facet->accounted_bytes;
4150 /* This loop feeds byte counters to bond_account() for rebalancing to use
4151 * as a basis. We also need to track the actual VLAN on which the packet
4152 * is going to be sent to ensure that it matches the one passed to
4153 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4156 * We use the actions from an arbitrary subfacet because they should all
4157 * be equally valid for our purpose. */
4158 vlan_tci = facet->flow.vlan_tci;
4159 NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->xout.odp_actions.data,
4160 facet->xout.odp_actions.size) {
4161 const struct ovs_action_push_vlan *vlan;
4162 struct ofport_dpif *port;
4164 switch (nl_attr_type(a)) {
4165 case OVS_ACTION_ATTR_OUTPUT:
4166 port = get_odp_port(facet->ofproto, nl_attr_get_odp_port(a));
4167 if (port && port->bundle && port->bundle->bond) {
4168 bond_account(port->bundle->bond, &facet->flow,
4169 vlan_tci_to_vid(vlan_tci), n_bytes);
4173 case OVS_ACTION_ATTR_POP_VLAN:
4174 vlan_tci = htons(0);
4177 case OVS_ACTION_ATTR_PUSH_VLAN:
4178 vlan = nl_attr_get(a);
4179 vlan_tci = vlan->vlan_tci;
4185 /* Returns true if the only action for 'facet' is to send to the controller.
4186 * (We don't report NetFlow expiration messages for such facets because they
4187 * are just part of the control logic for the network, not real traffic). */
4189 facet_is_controller_flow(struct facet *facet)
4192 struct ofproto_dpif *ofproto = facet->ofproto;
4193 const struct ofpact *ofpacts;
4194 struct rule_dpif *rule;
4198 rule_dpif_lookup(ofproto, &facet->flow, NULL, &rule);
4199 ofpacts_len = rule->up.ofpacts_len;
4200 ofpacts = rule->up.ofpacts;
4201 is_controller = ofpacts_len > 0
4202 && ofpacts->type == OFPACT_CONTROLLER
4203 && ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len);
4204 rule_dpif_release(rule);
4205 return is_controller;
4210 /* Folds all of 'facet''s statistics into its rule. Also updates the
4211 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4212 * 'facet''s statistics in the datapath should have been zeroed and folded into
4213 * its packet and byte counts before this function is called. */
4215 facet_flush_stats(struct facet *facet)
4217 struct ofproto_dpif *ofproto = facet->ofproto;
4218 struct subfacet *subfacet;
4220 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4221 ovs_assert(!subfacet->dp_byte_count);
4222 ovs_assert(!subfacet->dp_packet_count);
4225 facet_push_stats(facet, false);
4226 if (facet->accounted_bytes < facet->byte_count) {
4227 facet_account(facet);
4228 facet->accounted_bytes = facet->byte_count;
4231 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
4232 struct ofexpired expired;
4233 expired.flow = facet->flow;
4234 expired.packet_count = facet->packet_count;
4235 expired.byte_count = facet->byte_count;
4236 expired.used = facet->used;
4237 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
4240 /* Reset counters to prevent double counting if 'facet' ever gets
4242 facet_reset_counters(facet);
4244 netflow_flow_clear(&facet->nf_flow);
4245 facet->tcp_flags = 0;
4248 /* Searches 'ofproto''s table of facets for one which would be responsible for
4249 * 'flow'. Returns it if found, otherwise a null pointer.
4251 * The returned facet might need revalidation; use facet_lookup_valid()
4252 * instead if that is important. */
4253 static struct facet *
4254 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
4256 struct cls_rule *cr;
4258 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4259 cr = classifier_lookup(&ofproto->facets, flow, NULL);
4260 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4261 return cr ? CONTAINER_OF(cr, struct facet, cr) : NULL;
4264 /* Searches 'ofproto''s table of facets for one capable that covers
4265 * 'flow'. Returns it if found, otherwise a null pointer.
4267 * The returned facet is guaranteed to be valid. */
4268 static struct facet *
4269 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
4271 struct facet *facet;
4273 facet = facet_find(ofproto, flow);
4275 && ofproto->backer->need_revalidate
4276 && !facet_revalidate(facet)) {
4284 facet_check_consistency(struct facet *facet)
4286 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
4288 struct xlate_out xout;
4289 struct xlate_in xin;
4291 struct rule_dpif *rule;
4294 /* Check the datapath actions for consistency. */
4295 rule_dpif_lookup(facet->ofproto, &facet->flow, NULL, &rule);
4296 xlate_in_init(&xin, facet->ofproto, &facet->flow, rule, 0, NULL);
4297 xlate_actions(&xin, &xout);
4298 rule_dpif_release(rule);
4300 ok = ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)
4301 && facet->xout.slow == xout.slow;
4302 if (!ok && !VLOG_DROP_WARN(&rl)) {
4303 struct ds s = DS_EMPTY_INITIALIZER;
4305 flow_format(&s, &facet->flow);
4306 ds_put_cstr(&s, ": inconsistency in facet");
4308 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4309 ds_put_cstr(&s, " (actions were: ");
4310 format_odp_actions(&s, facet->xout.odp_actions.data,
4311 facet->xout.odp_actions.size);
4312 ds_put_cstr(&s, ") (correct actions: ");
4313 format_odp_actions(&s, xout.odp_actions.data,
4314 xout.odp_actions.size);
4315 ds_put_char(&s, ')');
4318 if (facet->xout.slow != xout.slow) {
4319 ds_put_format(&s, " slow path incorrect. should be %d", xout.slow);
4324 xlate_out_uninit(&xout);
4329 /* Re-searches the classifier for 'facet':
4331 * - If the rule found is different from 'facet''s current rule, moves
4332 * 'facet' to the new rule and recompiles its actions.
4334 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4335 * where it is and recompiles its actions anyway.
4337 * - If any of 'facet''s subfacets correspond to a new flow according to
4338 * xlate_receive(), 'facet' is removed.
4340 * Returns true if 'facet' is still valid. False if 'facet' was removed. */
4342 facet_revalidate(struct facet *facet)
4344 struct ofproto_dpif *ofproto = facet->ofproto;
4345 struct rule_dpif *new_rule;
4346 struct subfacet *subfacet;
4347 struct flow_wildcards wc;
4348 struct xlate_out xout;
4349 struct xlate_in xin;
4351 COVERAGE_INC(facet_revalidate);
4353 /* Check that child subfacets still correspond to this facet. Tunnel
4354 * configuration changes could cause a subfacet's OpenFlow in_port to
4356 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4357 struct ofproto_dpif *recv_ofproto;
4358 struct flow recv_flow;
4361 error = xlate_receive(ofproto->backer, NULL, subfacet->key,
4362 subfacet->key_len, &recv_flow, NULL,
4363 &recv_ofproto, NULL);
4365 || recv_ofproto != ofproto
4366 || facet != facet_find(ofproto, &recv_flow)) {
4367 facet_remove(facet);
4372 flow_wildcards_init_catchall(&wc);
4373 rule_dpif_lookup(ofproto, &facet->flow, &wc, &new_rule);
4375 /* Calculate new datapath actions.
4377 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4378 * emit a NetFlow expiration and, if so, we need to have the old state
4379 * around to properly compose it. */
4380 xlate_in_init(&xin, ofproto, &facet->flow, new_rule, 0, NULL);
4381 xlate_actions(&xin, &xout);
4382 flow_wildcards_or(&xout.wc, &xout.wc, &wc);
4384 /* A facet's slow path reason should only change under dramatic
4385 * circumstances. Rather than try to update everything, it's simpler to
4386 * remove the facet and start over.
4388 * More importantly, if a facet's wildcards change, it will be relatively
4389 * difficult to figure out if its subfacets still belong to it, and if not
4390 * which facet they may belong to. Again, to avoid the complexity, we
4391 * simply give up instead. */
4392 if (facet->xout.slow != xout.slow
4393 || memcmp(&facet->xout.wc, &xout.wc, sizeof xout.wc)) {
4394 facet_remove(facet);
4395 xlate_out_uninit(&xout);
4396 rule_dpif_release(new_rule);
4400 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4401 LIST_FOR_EACH(subfacet, list_node, &facet->subfacets) {
4402 if (subfacet->path == SF_FAST_PATH) {
4403 struct dpif_flow_stats stats;
4405 subfacet_install(subfacet, &xout.odp_actions, &stats);
4406 subfacet_update_stats(subfacet, &stats);
4410 facet_flush_stats(facet);
4412 ofpbuf_clear(&facet->xout.odp_actions);
4413 ofpbuf_put(&facet->xout.odp_actions, xout.odp_actions.data,
4414 xout.odp_actions.size);
4417 /* Update 'facet' now that we've taken care of all the old state. */
4418 facet->xout.slow = xout.slow;
4419 facet->xout.has_learn = xout.has_learn;
4420 facet->xout.has_normal = xout.has_normal;
4421 facet->xout.has_fin_timeout = xout.has_fin_timeout;
4422 facet->xout.nf_output_iface = xout.nf_output_iface;
4423 facet->xout.mirrors = xout.mirrors;
4424 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4425 facet->used = MAX(facet->used, new_rule->up.created);
4427 xlate_out_uninit(&xout);
4428 rule_dpif_release(new_rule);
4433 facet_reset_counters(struct facet *facet)
4435 facet->packet_count = 0;
4436 facet->byte_count = 0;
4437 facet->prev_packet_count = 0;
4438 facet->prev_byte_count = 0;
4439 facet->accounted_bytes = 0;
4443 flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
4444 struct dpif_flow_stats *stats, bool may_learn)
4446 struct ofport_dpif *in_port;
4447 struct rule_dpif *rule;
4448 struct xlate_in xin;
4450 in_port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4451 if (in_port && in_port->is_tunnel) {
4452 netdev_vport_inc_rx(in_port->up.netdev, stats);
4455 rule_dpif_lookup(ofproto, flow, NULL, &rule);
4456 rule_dpif_credit_stats(rule, stats);
4457 xlate_in_init(&xin, ofproto, flow, rule, stats->tcp_flags, NULL);
4458 xin.resubmit_stats = stats;
4459 xin.may_learn = may_learn;
4460 xlate_actions_for_side_effects(&xin);
4461 rule_dpif_release(rule);
4465 facet_push_stats(struct facet *facet, bool may_learn)
4467 struct dpif_flow_stats stats;
4469 ovs_assert(facet->packet_count >= facet->prev_packet_count);
4470 ovs_assert(facet->byte_count >= facet->prev_byte_count);
4471 ovs_assert(facet->used >= facet->prev_used);
4473 stats.n_packets = facet->packet_count - facet->prev_packet_count;
4474 stats.n_bytes = facet->byte_count - facet->prev_byte_count;
4475 stats.used = facet->used;
4476 stats.tcp_flags = facet->tcp_flags;
4478 if (may_learn || stats.n_packets || facet->used > facet->prev_used) {
4479 facet->prev_packet_count = facet->packet_count;
4480 facet->prev_byte_count = facet->byte_count;
4481 facet->prev_used = facet->used;
4483 netflow_flow_update_time(facet->ofproto->netflow, &facet->nf_flow,
4485 netflow_flow_update_flags(&facet->nf_flow, facet->tcp_flags);
4486 mirror_update_stats(facet->ofproto->mbridge, facet->xout.mirrors,
4487 stats.n_packets, stats.n_bytes);
4488 flow_push_stats(facet->ofproto, &facet->flow, &stats, may_learn);
4493 push_all_stats__(bool run_fast)
4495 static long long int rl = LLONG_MIN;
4496 struct ofproto_dpif *ofproto;
4498 if (time_msec() < rl) {
4502 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
4503 struct cls_cursor cursor;
4504 struct facet *facet;
4506 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4507 cls_cursor_init(&cursor, &ofproto->facets, NULL);
4508 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
4509 facet_push_stats(facet, false);
4514 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4517 rl = time_msec() + 100;
4521 push_all_stats(void)
4523 push_all_stats__(true);
4527 rule_dpif_credit_stats(struct rule_dpif *rule,
4528 const struct dpif_flow_stats *stats)
4530 ovs_mutex_lock(&rule->stats_mutex);
4531 rule->packet_count += stats->n_packets;
4532 rule->byte_count += stats->n_bytes;
4533 rule->up.used = MAX(rule->up.used, stats->used);
4534 ovs_mutex_unlock(&rule->stats_mutex);
4538 rule_dpif_fail_open(const struct rule_dpif *rule)
4540 return rule->up.cr.priority == FAIL_OPEN_PRIORITY;
4544 rule_dpif_get_flow_cookie(const struct rule_dpif *rule)
4546 return rule->up.flow_cookie;
4550 rule_dpif_reduce_timeouts(struct rule_dpif *rule, uint16_t idle_timeout,
4551 uint16_t hard_timeout)
4553 ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout);
4557 rule_dpif_get_actions(const struct rule_dpif *rule,
4558 const struct ofpact **ofpacts, size_t *ofpacts_len)
4560 *ofpacts = rule->up.ofpacts;
4561 *ofpacts_len = rule->up.ofpacts_len;
4566 static struct subfacet *
4567 subfacet_find(struct dpif_backer *backer, const struct nlattr *key,
4568 size_t key_len, uint32_t key_hash)
4570 struct subfacet *subfacet;
4572 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
4573 &backer->subfacets) {
4574 if (subfacet->key_len == key_len
4575 && !memcmp(key, subfacet->key, key_len)) {
4583 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4584 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
4585 * existing subfacet if there is one, otherwise creates and returns a
4587 static struct subfacet *
4588 subfacet_create(struct facet *facet, struct flow_miss *miss)
4590 struct dpif_backer *backer = miss->ofproto->backer;
4591 enum odp_key_fitness key_fitness = miss->key_fitness;
4592 const struct nlattr *key = miss->key;
4593 size_t key_len = miss->key_len;
4595 struct subfacet *subfacet;
4597 key_hash = odp_flow_key_hash(key, key_len);
4599 if (list_is_empty(&facet->subfacets)) {
4600 subfacet = &facet->one_subfacet;
4602 subfacet = subfacet_find(backer, key, key_len, key_hash);
4604 if (subfacet->facet == facet) {
4608 /* This shouldn't happen. */
4609 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
4610 subfacet_destroy(subfacet);
4613 subfacet = xmalloc(sizeof *subfacet);
4616 hmap_insert(&backer->subfacets, &subfacet->hmap_node, key_hash);
4617 list_push_back(&facet->subfacets, &subfacet->list_node);
4618 subfacet->facet = facet;
4619 subfacet->key_fitness = key_fitness;
4620 subfacet->key = xmemdup(key, key_len);
4621 subfacet->key_len = key_len;
4622 subfacet->used = miss->stats.used;
4623 subfacet->created = subfacet->used;
4624 subfacet->dp_packet_count = 0;
4625 subfacet->dp_byte_count = 0;
4626 subfacet->path = SF_NOT_INSTALLED;
4627 subfacet->backer = backer;
4629 backer->subfacet_add_count++;
4633 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4634 * its facet within 'ofproto', and frees it. */
4636 subfacet_destroy__(struct subfacet *subfacet)
4638 struct facet *facet = subfacet->facet;
4639 struct ofproto_dpif *ofproto = facet->ofproto;
4641 /* Update ofproto stats before uninstall the subfacet. */
4642 ofproto->backer->subfacet_del_count++;
4644 subfacet_uninstall(subfacet);
4645 hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
4646 list_remove(&subfacet->list_node);
4647 free(subfacet->key);
4648 if (subfacet != &facet->one_subfacet) {
4653 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4654 * last remaining subfacet in its facet destroys the facet too. */
4656 subfacet_destroy(struct subfacet *subfacet)
4658 struct facet *facet = subfacet->facet;
4660 if (list_is_singleton(&facet->subfacets)) {
4661 /* facet_remove() needs at least one subfacet (it will remove it). */
4662 facet_remove(facet);
4664 subfacet_destroy__(subfacet);
4669 subfacet_destroy_batch(struct dpif_backer *backer,
4670 struct subfacet **subfacets, int n)
4672 struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
4673 struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
4674 struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
4677 for (i = 0; i < n; i++) {
4678 ops[i].type = DPIF_OP_FLOW_DEL;
4679 ops[i].u.flow_del.key = subfacets[i]->key;
4680 ops[i].u.flow_del.key_len = subfacets[i]->key_len;
4681 ops[i].u.flow_del.stats = &stats[i];
4685 dpif_operate(backer->dpif, opsp, n);
4686 for (i = 0; i < n; i++) {
4687 subfacet_reset_dp_stats(subfacets[i], &stats[i]);
4688 subfacets[i]->path = SF_NOT_INSTALLED;
4689 subfacet_destroy(subfacets[i]);
4694 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4695 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4696 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4697 * since 'subfacet' was last updated.
4699 * Returns 0 if successful, otherwise a positive errno value. */
4701 subfacet_install(struct subfacet *subfacet, const struct ofpbuf *odp_actions,
4702 struct dpif_flow_stats *stats)
4704 struct facet *facet = subfacet->facet;
4705 enum subfacet_path path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
4706 const struct nlattr *actions = odp_actions->data;
4707 size_t actions_len = odp_actions->size;
4708 struct odputil_keybuf maskbuf;
4711 uint64_t slow_path_stub[128 / 8];
4712 enum dpif_flow_put_flags flags;
4715 flags = subfacet->path == SF_NOT_INSTALLED ? DPIF_FP_CREATE
4718 flags |= DPIF_FP_ZERO_STATS;
4721 if (path == SF_SLOW_PATH) {
4722 compose_slow_path(facet->ofproto, &facet->flow, facet->xout.slow,
4723 slow_path_stub, sizeof slow_path_stub,
4724 &actions, &actions_len);
4727 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
4728 if (enable_megaflows) {
4729 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
4730 &facet->flow, UINT32_MAX);
4733 ret = dpif_flow_put(subfacet->backer->dpif, flags, subfacet->key,
4734 subfacet->key_len, mask.data, mask.size,
4735 actions, actions_len, stats);
4738 subfacet_reset_dp_stats(subfacet, stats);
4742 COVERAGE_INC(subfacet_install_fail);
4744 subfacet->path = path;
4749 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4751 subfacet_uninstall(struct subfacet *subfacet)
4753 if (subfacet->path != SF_NOT_INSTALLED) {
4754 struct ofproto_dpif *ofproto = subfacet->facet->ofproto;
4755 struct dpif_flow_stats stats;
4758 error = dpif_flow_del(ofproto->backer->dpif, subfacet->key,
4759 subfacet->key_len, &stats);
4760 subfacet_reset_dp_stats(subfacet, &stats);
4762 subfacet_update_stats(subfacet, &stats);
4764 subfacet->path = SF_NOT_INSTALLED;
4766 ovs_assert(subfacet->dp_packet_count == 0);
4767 ovs_assert(subfacet->dp_byte_count == 0);
4771 /* Resets 'subfacet''s datapath statistics counters. This should be called
4772 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4773 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4774 * was reset in the datapath. 'stats' will be modified to include only
4775 * statistics new since 'subfacet' was last updated. */
4777 subfacet_reset_dp_stats(struct subfacet *subfacet,
4778 struct dpif_flow_stats *stats)
4781 && subfacet->dp_packet_count <= stats->n_packets
4782 && subfacet->dp_byte_count <= stats->n_bytes) {
4783 stats->n_packets -= subfacet->dp_packet_count;
4784 stats->n_bytes -= subfacet->dp_byte_count;
4787 subfacet->dp_packet_count = 0;
4788 subfacet->dp_byte_count = 0;
4791 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4793 * Because of the meaning of a subfacet's counters, it only makes sense to do
4794 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4795 * represents a packet that was sent by hand or if it represents statistics
4796 * that have been cleared out of the datapath. */
4798 subfacet_update_stats(struct subfacet *subfacet,
4799 const struct dpif_flow_stats *stats)
4801 if (stats->n_packets || stats->used > subfacet->used) {
4802 struct facet *facet = subfacet->facet;
4804 subfacet->used = MAX(subfacet->used, stats->used);
4805 facet->used = MAX(facet->used, stats->used);
4806 facet->packet_count += stats->n_packets;
4807 facet->byte_count += stats->n_bytes;
4808 facet->tcp_flags |= stats->tcp_flags;
4814 /* Lookup 'flow' in 'ofproto''s classifier. If 'wc' is non-null, sets
4815 * the fields that were relevant as part of the lookup. */
4817 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4818 struct flow_wildcards *wc, struct rule_dpif **rule)
4820 struct ofport_dpif *port;
4822 if (rule_dpif_lookup_in_table(ofproto, flow, wc, 0, rule)) {
4825 port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4827 VLOG_WARN_RL(&rl, "packet-in on unknown OpenFlow port %"PRIu16,
4828 flow->in_port.ofp_port);
4831 choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
4832 ofproto->no_packet_in_rule, rule);
4836 rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
4837 const struct flow *flow, struct flow_wildcards *wc,
4838 uint8_t table_id, struct rule_dpif **rule)
4839 OVS_TRY_RDLOCK(true, (*rule)->up.rwlock)
4841 struct cls_rule *cls_rule;
4842 struct classifier *cls;
4846 if (table_id >= N_TABLES) {
4851 memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
4852 wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
4855 cls = &ofproto->up.tables[table_id].cls;
4856 ovs_rwlock_rdlock(&cls->rwlock);
4857 frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
4858 if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4859 /* We must pretend that transport ports are unavailable. */
4860 struct flow ofpc_normal_flow = *flow;
4861 ofpc_normal_flow.tp_src = htons(0);
4862 ofpc_normal_flow.tp_dst = htons(0);
4863 cls_rule = classifier_lookup(cls, &ofpc_normal_flow, wc);
4864 } else if (frag && ofproto->up.frag_handling == OFPC_FRAG_DROP) {
4865 cls_rule = &ofproto->drop_frags_rule->up.cr;
4867 flow_wildcards_init_exact(wc);
4870 cls_rule = classifier_lookup(cls, flow, wc);
4873 *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
4874 if (*rule && ovs_rwlock_tryrdlock(&(*rule)->up.rwlock)) {
4875 /* The rule is in the process of being removed. Best we can do is
4876 * pretend it isn't there. */
4879 ovs_rwlock_unlock(&cls->rwlock);
4881 return *rule != NULL;
4884 /* Given a port configuration (specified as zero if there's no port), chooses
4885 * which of 'miss_rule' and 'no_packet_in_rule' should be used in case of a
4886 * flow table miss. */
4888 choose_miss_rule(enum ofputil_port_config config, struct rule_dpif *miss_rule,
4889 struct rule_dpif *no_packet_in_rule, struct rule_dpif **rule)
4890 OVS_NO_THREAD_SAFETY_ANALYSIS
4892 *rule = config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
4893 ovs_rwlock_rdlock(&(*rule)->up.rwlock);
4897 rule_dpif_release(struct rule_dpif *rule)
4898 OVS_NO_THREAD_SAFETY_ANALYSIS
4901 ovs_rwlock_unlock(&rule->up.rwlock);
4906 complete_operation(struct rule_dpif *rule)
4908 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4910 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
4912 struct dpif_completion *c = xmalloc(sizeof *c);
4913 c->op = rule->up.pending;
4914 list_push_back(&ofproto->completions, &c->list_node);
4916 ofoperation_complete(rule->up.pending, 0);
4920 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
4922 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
4925 static struct rule *
4928 struct rule_dpif *rule = xmalloc(sizeof *rule);
4933 rule_dealloc(struct rule *rule_)
4935 struct rule_dpif *rule = rule_dpif_cast(rule_);
4940 rule_construct(struct rule *rule_)
4942 struct rule_dpif *rule = rule_dpif_cast(rule_);
4943 ovs_mutex_init(&rule->stats_mutex);
4944 ovs_mutex_lock(&rule->stats_mutex);
4945 rule->packet_count = 0;
4946 rule->byte_count = 0;
4947 ovs_mutex_unlock(&rule->stats_mutex);
4952 rule_insert(struct rule *rule_)
4954 struct rule_dpif *rule = rule_dpif_cast(rule_);
4955 complete_operation(rule);
4959 rule_delete(struct rule *rule_)
4961 struct rule_dpif *rule = rule_dpif_cast(rule_);
4962 complete_operation(rule);
4966 rule_destruct(struct rule *rule_)
4968 struct rule_dpif *rule = rule_dpif_cast(rule_);
4969 ovs_mutex_destroy(&rule->stats_mutex);
4973 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4975 struct rule_dpif *rule = rule_dpif_cast(rule_);
4977 /* push_all_stats() can handle flow misses which, when using the learn
4978 * action, can cause rules to be added and deleted. This can corrupt our
4979 * caller's datastructures which assume that rule_get_stats() doesn't have
4980 * an impact on the flow table. To be safe, we disable miss handling. */
4981 push_all_stats__(false);
4983 /* Start from historical data for 'rule' itself that are no longer tracked
4984 * in facets. This counts, for example, facets that have expired. */
4985 ovs_mutex_lock(&rule->stats_mutex);
4986 *packets = rule->packet_count;
4987 *bytes = rule->byte_count;
4988 ovs_mutex_unlock(&rule->stats_mutex);
4992 rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
4993 struct ofpbuf *packet)
4995 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4996 struct dpif_flow_stats stats;
4997 struct xlate_out xout;
4998 struct xlate_in xin;
5000 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5001 rule_dpif_credit_stats(rule, &stats);
5003 xlate_in_init(&xin, ofproto, flow, rule, stats.tcp_flags, packet);
5004 xin.resubmit_stats = &stats;
5005 xlate_actions(&xin, &xout);
5007 execute_odp_actions(ofproto, flow, xout.odp_actions.data,
5008 xout.odp_actions.size, packet);
5010 xlate_out_uninit(&xout);
5014 rule_execute(struct rule *rule, const struct flow *flow,
5015 struct ofpbuf *packet)
5017 rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
5018 ofpbuf_delete(packet);
5023 rule_modify_actions(struct rule *rule_, bool reset_counters)
5025 struct rule_dpif *rule = rule_dpif_cast(rule_);
5027 if (reset_counters) {
5028 ovs_mutex_lock(&rule->stats_mutex);
5029 rule->packet_count = 0;
5030 rule->byte_count = 0;
5031 ovs_mutex_unlock(&rule->stats_mutex);
5034 complete_operation(rule);
5037 /* Sends 'packet' out 'ofport'.
5038 * May modify 'packet'.
5039 * Returns 0 if successful, otherwise a positive errno value. */
5041 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
5043 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
5044 uint64_t odp_actions_stub[1024 / 8];
5045 struct ofpbuf key, odp_actions;
5046 struct dpif_flow_stats stats;
5047 struct odputil_keybuf keybuf;
5048 struct ofpact_output output;
5049 struct xlate_out xout;
5050 struct xlate_in xin;
5052 union flow_in_port in_port_;
5055 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
5056 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5058 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
5059 in_port_.ofp_port = OFPP_NONE;
5060 flow_extract(packet, 0, 0, NULL, &in_port_, &flow);
5061 odp_flow_key_from_flow(&key, &flow, ofp_port_to_odp_port(ofproto,
5063 dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
5065 ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
5066 output.port = ofport->up.ofp_port;
5069 xlate_in_init(&xin, ofproto, &flow, NULL, 0, packet);
5070 xin.ofpacts_len = sizeof output;
5071 xin.ofpacts = &output.ofpact;
5072 xin.resubmit_stats = &stats;
5073 xlate_actions(&xin, &xout);
5075 error = dpif_execute(ofproto->backer->dpif,
5077 xout.odp_actions.data, xout.odp_actions.size,
5079 xlate_out_uninit(&xout);
5082 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %s (%s)",
5083 ofproto->up.name, netdev_get_name(ofport->up.netdev),
5084 ovs_strerror(error));
5087 ofproto->stats.tx_packets++;
5088 ofproto->stats.tx_bytes += packet->size;
5092 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
5093 * The action will state 'slow' as the reason that the action is in the slow
5094 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5095 * dump-flows" output to see why a flow is in the slow path.)
5097 * The 'stub_size' bytes in 'stub' will be used to store the action.
5098 * 'stub_size' must be large enough for the action.
5100 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5103 compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
5104 enum slow_path_reason slow,
5105 uint64_t *stub, size_t stub_size,
5106 const struct nlattr **actionsp, size_t *actions_lenp)
5108 union user_action_cookie cookie;
5111 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
5112 cookie.slow_path.unused = 0;
5113 cookie.slow_path.reason = slow;
5115 ofpbuf_use_stack(&buf, stub, stub_size);
5116 if (slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP | SLOW_STP)) {
5117 uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif,
5119 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5121 odp_port_t odp_port;
5124 odp_port = ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port);
5125 pid = dpif_port_get_pid(ofproto->backer->dpif, odp_port);
5126 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5128 *actionsp = buf.data;
5129 *actions_lenp = buf.size;
5133 set_frag_handling(struct ofproto *ofproto_,
5134 enum ofp_config_flags frag_handling)
5136 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5137 if (frag_handling != OFPC_FRAG_REASM) {
5138 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5146 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5147 const struct flow *flow,
5148 const struct ofpact *ofpacts, size_t ofpacts_len)
5150 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5151 struct odputil_keybuf keybuf;
5152 struct dpif_flow_stats stats;
5153 struct xlate_out xout;
5154 struct xlate_in xin;
5158 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5159 odp_flow_key_from_flow(&key, flow,
5160 ofp_port_to_odp_port(ofproto,
5161 flow->in_port.ofp_port));
5163 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5165 xlate_in_init(&xin, ofproto, flow, NULL, stats.tcp_flags, packet);
5166 xin.resubmit_stats = &stats;
5167 xin.ofpacts_len = ofpacts_len;
5168 xin.ofpacts = ofpacts;
5170 xlate_actions(&xin, &xout);
5171 dpif_execute(ofproto->backer->dpif, key.data, key.size,
5172 xout.odp_actions.data, xout.odp_actions.size, packet);
5173 xlate_out_uninit(&xout);
5181 set_netflow(struct ofproto *ofproto_,
5182 const struct netflow_options *netflow_options)
5184 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5186 if (netflow_options) {
5187 if (!ofproto->netflow) {
5188 ofproto->netflow = netflow_create();
5189 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5191 return netflow_set_options(ofproto->netflow, netflow_options);
5192 } else if (ofproto->netflow) {
5193 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5194 netflow_destroy(ofproto->netflow);
5195 ofproto->netflow = NULL;
5202 get_netflow_ids(const struct ofproto *ofproto_,
5203 uint8_t *engine_type, uint8_t *engine_id)
5205 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5207 dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
5211 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5213 if (!facet_is_controller_flow(facet) &&
5214 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5215 struct subfacet *subfacet;
5216 struct ofexpired expired;
5218 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5219 if (subfacet->path == SF_FAST_PATH) {
5220 struct dpif_flow_stats stats;
5222 subfacet_install(subfacet, &facet->xout.odp_actions,
5224 subfacet_update_stats(subfacet, &stats);
5228 expired.flow = facet->flow;
5229 expired.packet_count = facet->packet_count;
5230 expired.byte_count = facet->byte_count;
5231 expired.used = facet->used;
5232 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5237 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5239 struct cls_cursor cursor;
5240 struct facet *facet;
5242 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5243 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5244 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5245 send_active_timeout(ofproto, facet);
5247 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5250 static struct ofproto_dpif *
5251 ofproto_dpif_lookup(const char *name)
5253 struct ofproto_dpif *ofproto;
5255 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5256 hash_string(name, 0), &all_ofproto_dpifs) {
5257 if (!strcmp(ofproto->up.name, name)) {
5265 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5266 const char *argv[], void *aux OVS_UNUSED)
5268 struct ofproto_dpif *ofproto;
5271 ofproto = ofproto_dpif_lookup(argv[1]);
5273 unixctl_command_reply_error(conn, "no such bridge");
5276 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5277 mac_learning_flush(ofproto->ml);
5278 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5280 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5281 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5282 mac_learning_flush(ofproto->ml);
5283 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5287 unixctl_command_reply(conn, "table successfully flushed");
5290 static struct ofport_dpif *
5291 ofbundle_get_a_port(const struct ofbundle *bundle)
5293 return CONTAINER_OF(list_front(&bundle->ports), struct ofport_dpif,
5298 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5299 const char *argv[], void *aux OVS_UNUSED)
5301 struct ds ds = DS_EMPTY_INITIALIZER;
5302 const struct ofproto_dpif *ofproto;
5303 const struct mac_entry *e;
5305 ofproto = ofproto_dpif_lookup(argv[1]);
5307 unixctl_command_reply_error(conn, "no such bridge");
5311 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5312 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
5313 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5314 struct ofbundle *bundle = e->port.p;
5315 char name[OFP_MAX_PORT_NAME_LEN];
5317 ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
5319 ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" %3d\n",
5320 name, e->vlan, ETH_ADDR_ARGS(e->mac),
5321 mac_entry_age(ofproto->ml, e));
5323 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5324 unixctl_command_reply(conn, ds_cstr(&ds));
5329 struct xlate_out xout;
5330 struct xlate_in xin;
5336 trace_format_rule(struct ds *result, int level, const struct rule_dpif *rule)
5338 ds_put_char_multiple(result, '\t', level);
5340 ds_put_cstr(result, "No match\n");
5344 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5345 rule ? rule->up.table_id : 0, ntohll(rule->up.flow_cookie));
5346 cls_rule_format(&rule->up.cr, result);
5347 ds_put_char(result, '\n');
5349 ds_put_char_multiple(result, '\t', level);
5350 ds_put_cstr(result, "OpenFlow ");
5351 ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
5352 ds_put_char(result, '\n');
5356 trace_format_flow(struct ds *result, int level, const char *title,
5357 struct trace_ctx *trace)
5359 ds_put_char_multiple(result, '\t', level);
5360 ds_put_format(result, "%s: ", title);
5361 if (flow_equal(&trace->xin.flow, &trace->flow)) {
5362 ds_put_cstr(result, "unchanged");
5364 flow_format(result, &trace->xin.flow);
5365 trace->flow = trace->xin.flow;
5367 ds_put_char(result, '\n');
5371 trace_format_regs(struct ds *result, int level, const char *title,
5372 struct trace_ctx *trace)
5376 ds_put_char_multiple(result, '\t', level);
5377 ds_put_format(result, "%s:", title);
5378 for (i = 0; i < FLOW_N_REGS; i++) {
5379 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
5381 ds_put_char(result, '\n');
5385 trace_format_odp(struct ds *result, int level, const char *title,
5386 struct trace_ctx *trace)
5388 struct ofpbuf *odp_actions = &trace->xout.odp_actions;
5390 ds_put_char_multiple(result, '\t', level);
5391 ds_put_format(result, "%s: ", title);
5392 format_odp_actions(result, odp_actions->data, odp_actions->size);
5393 ds_put_char(result, '\n');
5397 trace_resubmit(struct xlate_in *xin, struct rule_dpif *rule, int recurse)
5399 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5400 struct ds *result = trace->result;
5402 ds_put_char(result, '\n');
5403 trace_format_flow(result, recurse + 1, "Resubmitted flow", trace);
5404 trace_format_regs(result, recurse + 1, "Resubmitted regs", trace);
5405 trace_format_odp(result, recurse + 1, "Resubmitted odp", trace);
5406 trace_format_rule(result, recurse + 1, rule);
5410 trace_report(struct xlate_in *xin, const char *s, int recurse)
5412 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5413 struct ds *result = trace->result;
5415 ds_put_char_multiple(result, '\t', recurse);
5416 ds_put_cstr(result, s);
5417 ds_put_char(result, '\n');
5421 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5422 void *aux OVS_UNUSED)
5424 const struct dpif_backer *backer;
5425 struct ofproto_dpif *ofproto;
5426 struct ofpbuf odp_key, odp_mask;
5427 struct ofpbuf *packet;
5435 ofpbuf_init(&odp_key, 0);
5436 ofpbuf_init(&odp_mask, 0);
5438 /* Handle "-generate" or a hex string as the last argument. */
5439 if (!strcmp(argv[argc - 1], "-generate")) {
5440 packet = ofpbuf_new(0);
5443 const char *error = eth_from_hex(argv[argc - 1], &packet);
5446 } else if (argc == 4) {
5447 /* The 3-argument form must end in "-generate' or a hex string. */
5448 unixctl_command_reply_error(conn, error);
5453 /* Parse the flow and determine whether a datapath or
5454 * bridge is specified. If function odp_flow_key_from_string()
5455 * returns 0, the flow is a odp_flow. If function
5456 * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
5457 if (!odp_flow_from_string(argv[argc - 1], NULL, &odp_key, &odp_mask)) {
5458 /* If the odp_flow is the second argument,
5459 * the datapath name is the first argument. */
5461 const char *dp_type;
5462 if (!strncmp(argv[1], "ovs-", 4)) {
5463 dp_type = argv[1] + 4;
5467 backer = shash_find_data(&all_dpif_backers, dp_type);
5469 unixctl_command_reply_error(conn, "Cannot find datapath "
5474 /* No datapath name specified, so there should be only one
5476 struct shash_node *node;
5477 if (shash_count(&all_dpif_backers) != 1) {
5478 unixctl_command_reply_error(conn, "Must specify datapath "
5479 "name, there is more than one type of datapath");
5482 node = shash_first(&all_dpif_backers);
5483 backer = node->data;
5486 if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, &flow,
5487 NULL, &ofproto, NULL)) {
5488 unixctl_command_reply_error(conn, "Invalid datapath flow");
5491 ds_put_format(&result, "Bridge: %s\n", ofproto->up.name);
5492 } else if (!parse_ofp_exact_flow(&flow, argv[argc - 1])) {
5494 unixctl_command_reply_error(conn, "Must specify bridge name");
5498 ofproto = ofproto_dpif_lookup(argv[1]);
5500 unixctl_command_reply_error(conn, "Unknown bridge name");
5504 unixctl_command_reply_error(conn, "Bad flow syntax");
5508 /* Generate a packet, if requested. */
5510 if (!packet->size) {
5511 flow_compose(packet, &flow);
5513 union flow_in_port in_port_;
5515 in_port_ = flow.in_port;
5516 ds_put_cstr(&result, "Packet: ");
5517 s = ofp_packet_to_string(packet->data, packet->size);
5518 ds_put_cstr(&result, s);
5521 /* Use the metadata from the flow and the packet argument
5522 * to reconstruct the flow. */
5523 flow_extract(packet, flow.skb_priority, flow.pkt_mark, NULL,
5528 ofproto_trace(ofproto, &flow, packet, &result);
5529 unixctl_command_reply(conn, ds_cstr(&result));
5532 ds_destroy(&result);
5533 ofpbuf_delete(packet);
5534 ofpbuf_uninit(&odp_key);
5535 ofpbuf_uninit(&odp_mask);
5539 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
5540 const struct ofpbuf *packet, struct ds *ds)
5542 struct rule_dpif *rule;
5543 struct flow_wildcards wc;
5545 ds_put_cstr(ds, "Flow: ");
5546 flow_format(ds, flow);
5547 ds_put_char(ds, '\n');
5549 flow_wildcards_init_catchall(&wc);
5550 rule_dpif_lookup(ofproto, flow, &wc, &rule);
5552 trace_format_rule(ds, 0, rule);
5553 if (rule == ofproto->miss_rule) {
5554 ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
5555 } else if (rule == ofproto->no_packet_in_rule) {
5556 ds_put_cstr(ds, "\nNo match, packets dropped because "
5557 "OFPPC_NO_PACKET_IN is set on in_port.\n");
5558 } else if (rule == ofproto->drop_frags_rule) {
5559 ds_put_cstr(ds, "\nPackets dropped because they are IP fragments "
5560 "and the fragment handling mode is \"drop\".\n");
5564 uint64_t odp_actions_stub[1024 / 8];
5565 struct ofpbuf odp_actions;
5566 struct trace_ctx trace;
5570 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
5573 ofpbuf_use_stub(&odp_actions,
5574 odp_actions_stub, sizeof odp_actions_stub);
5575 xlate_in_init(&trace.xin, ofproto, flow, rule, tcp_flags, packet);
5576 trace.xin.resubmit_hook = trace_resubmit;
5577 trace.xin.report_hook = trace_report;
5579 xlate_actions(&trace.xin, &trace.xout);
5580 flow_wildcards_or(&trace.xout.wc, &trace.xout.wc, &wc);
5582 ds_put_char(ds, '\n');
5583 trace_format_flow(ds, 0, "Final flow", &trace);
5585 match_init(&match, flow, &trace.xout.wc);
5586 ds_put_cstr(ds, "Relevant fields: ");
5587 match_format(&match, ds, OFP_DEFAULT_PRIORITY);
5588 ds_put_char(ds, '\n');
5590 ds_put_cstr(ds, "Datapath actions: ");
5591 format_odp_actions(ds, trace.xout.odp_actions.data,
5592 trace.xout.odp_actions.size);
5594 if (trace.xout.slow) {
5595 ds_put_cstr(ds, "\nThis flow is handled by the userspace "
5596 "slow path because it:");
5597 switch (trace.xout.slow) {
5599 ds_put_cstr(ds, "\n\t- Consists of CFM packets.");
5602 ds_put_cstr(ds, "\n\t- Consists of LACP packets.");
5605 ds_put_cstr(ds, "\n\t- Consists of STP packets.");
5608 ds_put_cstr(ds, "\n\t- Consists of BFD packets.");
5610 case SLOW_CONTROLLER:
5611 ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages "
5612 "to the OpenFlow controller.");
5619 xlate_out_uninit(&trace.xout);
5622 rule_dpif_release(rule);
5626 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5627 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5630 unixctl_command_reply(conn, NULL);
5634 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5635 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5638 unixctl_command_reply(conn, NULL);
5641 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
5642 * 'reply' describing the results. */
5644 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
5646 struct cls_cursor cursor;
5647 struct facet *facet;
5651 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5652 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5653 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5654 if (!facet_check_consistency(facet)) {
5658 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5660 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
5664 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
5665 ofproto->up.name, errors);
5667 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
5672 ofproto_dpif_self_check(struct unixctl_conn *conn,
5673 int argc, const char *argv[], void *aux OVS_UNUSED)
5675 struct ds reply = DS_EMPTY_INITIALIZER;
5676 struct ofproto_dpif *ofproto;
5679 ofproto = ofproto_dpif_lookup(argv[1]);
5681 unixctl_command_reply_error(conn, "Unknown ofproto (use "
5682 "ofproto/list for help)");
5685 ofproto_dpif_self_check__(ofproto, &reply);
5687 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5688 ofproto_dpif_self_check__(ofproto, &reply);
5692 unixctl_command_reply(conn, ds_cstr(&reply));
5696 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
5697 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
5698 * to destroy 'ofproto_shash' and free the returned value. */
5699 static const struct shash_node **
5700 get_ofprotos(struct shash *ofproto_shash)
5702 const struct ofproto_dpif *ofproto;
5704 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5705 char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
5706 shash_add_nocopy(ofproto_shash, name, ofproto);
5709 return shash_sort(ofproto_shash);
5713 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
5714 const char *argv[] OVS_UNUSED,
5715 void *aux OVS_UNUSED)
5717 struct ds ds = DS_EMPTY_INITIALIZER;
5718 struct shash ofproto_shash;
5719 const struct shash_node **sorted_ofprotos;
5722 shash_init(&ofproto_shash);
5723 sorted_ofprotos = get_ofprotos(&ofproto_shash);
5724 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5725 const struct shash_node *node = sorted_ofprotos[i];
5726 ds_put_format(&ds, "%s\n", node->name);
5729 shash_destroy(&ofproto_shash);
5730 free(sorted_ofprotos);
5732 unixctl_command_reply(conn, ds_cstr(&ds));
5737 show_dp_rates(struct ds *ds, const char *heading,
5738 const struct avg_subfacet_rates *rates)
5740 ds_put_format(ds, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
5741 heading, rates->add_rate, rates->del_rate);
5745 dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
5747 const struct shash_node **ofprotos;
5748 struct ofproto_dpif *ofproto;
5749 struct shash ofproto_shash;
5750 uint64_t n_hit, n_missed;
5751 long long int minutes;
5754 n_hit = n_missed = 0;
5755 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5756 if (ofproto->backer == backer) {
5757 n_missed += ofproto->n_missed;
5758 n_hit += ofproto->n_hit;
5762 ds_put_format(ds, "%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5763 dpif_name(backer->dpif), n_hit, n_missed);
5764 ds_put_format(ds, "\tflows: cur: %zu, avg: %u, max: %u,"
5765 " life span: %lldms\n", hmap_count(&backer->subfacets),
5766 backer->avg_n_subfacet, backer->max_n_subfacet,
5767 backer->avg_subfacet_life);
5769 minutes = (time_msec() - backer->created) / (1000 * 60);
5770 if (minutes >= 60) {
5771 show_dp_rates(ds, "\thourly avg:", &backer->hourly);
5773 if (minutes >= 60 * 24) {
5774 show_dp_rates(ds, "\tdaily avg:", &backer->daily);
5776 show_dp_rates(ds, "\toverall avg:", &backer->lifetime);
5778 shash_init(&ofproto_shash);
5779 ofprotos = get_ofprotos(&ofproto_shash);
5780 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5781 struct ofproto_dpif *ofproto = ofprotos[i]->data;
5782 const struct shash_node **ports;
5785 if (ofproto->backer != backer) {
5789 ds_put_format(ds, "\t%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5790 ofproto->up.name, ofproto->n_hit, ofproto->n_missed);
5792 ports = shash_sort(&ofproto->up.port_by_name);
5793 for (j = 0; j < shash_count(&ofproto->up.port_by_name); j++) {
5794 const struct shash_node *node = ports[j];
5795 struct ofport *ofport = node->data;
5797 odp_port_t odp_port;
5799 ds_put_format(ds, "\t\t%s %u/", netdev_get_name(ofport->netdev),
5802 odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
5803 if (odp_port != ODPP_NONE) {
5804 ds_put_format(ds, "%"PRIu32":", odp_port);
5806 ds_put_cstr(ds, "none:");
5809 ds_put_format(ds, " (%s", netdev_get_type(ofport->netdev));
5812 if (!netdev_get_config(ofport->netdev, &config)) {
5813 const struct smap_node **nodes;
5816 nodes = smap_sort(&config);
5817 for (i = 0; i < smap_count(&config); i++) {
5818 const struct smap_node *node = nodes[i];
5819 ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
5820 node->key, node->value);
5824 smap_destroy(&config);
5826 ds_put_char(ds, ')');
5827 ds_put_char(ds, '\n');
5831 shash_destroy(&ofproto_shash);
5836 ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5837 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5839 struct ds ds = DS_EMPTY_INITIALIZER;
5840 const struct shash_node **backers;
5843 backers = shash_sort(&all_dpif_backers);
5844 for (i = 0; i < shash_count(&all_dpif_backers); i++) {
5845 dpif_show_backer(backers[i]->data, &ds);
5849 unixctl_command_reply(conn, ds_cstr(&ds));
5853 /* Dump the megaflow (facet) cache. This is useful to check the
5854 * correctness of flow wildcarding, since the same mechanism is used for
5855 * both xlate caching and kernel wildcarding.
5857 * It's important to note that in the output the flow description uses
5858 * OpenFlow (OFP) ports, but the actions use datapath (ODP) ports.
5860 * This command is only needed for advanced debugging, so it's not
5861 * documented in the man page. */
5863 ofproto_unixctl_dpif_dump_megaflows(struct unixctl_conn *conn,
5864 int argc OVS_UNUSED, const char *argv[],
5865 void *aux OVS_UNUSED)
5867 struct ds ds = DS_EMPTY_INITIALIZER;
5868 const struct ofproto_dpif *ofproto;
5869 long long int now = time_msec();
5870 struct cls_cursor cursor;
5871 struct facet *facet;
5873 ofproto = ofproto_dpif_lookup(argv[1]);
5875 unixctl_command_reply_error(conn, "no such bridge");
5879 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5880 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5881 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5882 cls_rule_format(&facet->cr, &ds);
5883 ds_put_cstr(&ds, ", ");
5884 ds_put_format(&ds, "n_subfacets:%zu, ", list_size(&facet->subfacets));
5885 ds_put_format(&ds, "used:%.3fs, ", (now - facet->used) / 1000.0);
5886 ds_put_cstr(&ds, "Datapath actions: ");
5887 if (facet->xout.slow) {
5888 uint64_t slow_path_stub[128 / 8];
5889 const struct nlattr *actions;
5892 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
5893 slow_path_stub, sizeof slow_path_stub,
5894 &actions, &actions_len);
5895 format_odp_actions(&ds, actions, actions_len);
5897 format_odp_actions(&ds, facet->xout.odp_actions.data,
5898 facet->xout.odp_actions.size);
5900 ds_put_cstr(&ds, "\n");
5902 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5904 ds_chomp(&ds, '\n');
5905 unixctl_command_reply(conn, ds_cstr(&ds));
5909 /* Disable using the megaflows.
5911 * This command is only needed for advanced debugging, so it's not
5912 * documented in the man page. */
5914 ofproto_unixctl_dpif_disable_megaflows(struct unixctl_conn *conn,
5915 int argc OVS_UNUSED,
5916 const char *argv[] OVS_UNUSED,
5917 void *aux OVS_UNUSED)
5919 struct ofproto_dpif *ofproto;
5921 enable_megaflows = false;
5923 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5924 flush(&ofproto->up);
5927 unixctl_command_reply(conn, "megaflows disabled");
5930 /* Re-enable using megaflows.
5932 * This command is only needed for advanced debugging, so it's not
5933 * documented in the man page. */
5935 ofproto_unixctl_dpif_enable_megaflows(struct unixctl_conn *conn,
5936 int argc OVS_UNUSED,
5937 const char *argv[] OVS_UNUSED,
5938 void *aux OVS_UNUSED)
5940 struct ofproto_dpif *ofproto;
5942 enable_megaflows = true;
5944 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5945 flush(&ofproto->up);
5948 unixctl_command_reply(conn, "megaflows enabled");
5952 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
5953 int argc OVS_UNUSED, const char *argv[],
5954 void *aux OVS_UNUSED)
5956 struct ds ds = DS_EMPTY_INITIALIZER;
5957 const struct ofproto_dpif *ofproto;
5958 struct subfacet *subfacet;
5960 ofproto = ofproto_dpif_lookup(argv[1]);
5962 unixctl_command_reply_error(conn, "no such bridge");
5966 update_stats(ofproto->backer);
5968 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->backer->subfacets) {
5969 struct facet *facet = subfacet->facet;
5970 struct odputil_keybuf maskbuf;
5973 if (facet->ofproto != ofproto) {
5977 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
5978 if (enable_megaflows) {
5979 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
5980 &facet->flow, UINT32_MAX);
5983 odp_flow_format(subfacet->key, subfacet->key_len,
5984 mask.data, mask.size, &ds, false);
5986 ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
5987 subfacet->dp_packet_count, subfacet->dp_byte_count);
5988 if (subfacet->used) {
5989 ds_put_format(&ds, "%.3fs",
5990 (time_msec() - subfacet->used) / 1000.0);
5992 ds_put_format(&ds, "never");
5994 if (subfacet->facet->tcp_flags) {
5995 ds_put_cstr(&ds, ", flags:");
5996 packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
5999 ds_put_cstr(&ds, ", actions:");
6000 if (facet->xout.slow) {
6001 uint64_t slow_path_stub[128 / 8];
6002 const struct nlattr *actions;
6005 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
6006 slow_path_stub, sizeof slow_path_stub,
6007 &actions, &actions_len);
6008 format_odp_actions(&ds, actions, actions_len);
6010 format_odp_actions(&ds, facet->xout.odp_actions.data,
6011 facet->xout.odp_actions.size);
6013 ds_put_char(&ds, '\n');
6016 unixctl_command_reply(conn, ds_cstr(&ds));
6021 ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
6022 int argc OVS_UNUSED, const char *argv[],
6023 void *aux OVS_UNUSED)
6025 struct ds ds = DS_EMPTY_INITIALIZER;
6026 struct ofproto_dpif *ofproto;
6028 ofproto = ofproto_dpif_lookup(argv[1]);
6030 unixctl_command_reply_error(conn, "no such bridge");
6034 flush(&ofproto->up);
6036 unixctl_command_reply(conn, ds_cstr(&ds));
6041 ofproto_dpif_unixctl_init(void)
6043 static bool registered;
6049 unixctl_command_register(
6051 "[dp_name]|bridge odp_flow|br_flow [-generate|packet]",
6052 1, 3, ofproto_unixctl_trace, NULL);
6053 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6054 ofproto_unixctl_fdb_flush, NULL);
6055 unixctl_command_register("fdb/show", "bridge", 1, 1,
6056 ofproto_unixctl_fdb_show, NULL);
6057 unixctl_command_register("ofproto/clog", "", 0, 0,
6058 ofproto_dpif_clog, NULL);
6059 unixctl_command_register("ofproto/unclog", "", 0, 0,
6060 ofproto_dpif_unclog, NULL);
6061 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6062 ofproto_dpif_self_check, NULL);
6063 unixctl_command_register("dpif/dump-dps", "", 0, 0,
6064 ofproto_unixctl_dpif_dump_dps, NULL);
6065 unixctl_command_register("dpif/show", "", 0, 0, ofproto_unixctl_dpif_show,
6067 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
6068 ofproto_unixctl_dpif_dump_flows, NULL);
6069 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
6070 ofproto_unixctl_dpif_del_flows, NULL);
6071 unixctl_command_register("dpif/dump-megaflows", "bridge", 1, 1,
6072 ofproto_unixctl_dpif_dump_megaflows, NULL);
6073 unixctl_command_register("dpif/disable-megaflows", "", 0, 0,
6074 ofproto_unixctl_dpif_disable_megaflows, NULL);
6075 unixctl_command_register("dpif/enable-megaflows", "", 0, 0,
6076 ofproto_unixctl_dpif_enable_megaflows, NULL);
6079 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6081 * This is deprecated. It is only for compatibility with broken device drivers
6082 * in old versions of Linux that do not properly support VLANs when VLAN
6083 * devices are not used. When broken device drivers are no longer in
6084 * widespread use, we will delete these interfaces. */
6087 set_realdev(struct ofport *ofport_, ofp_port_t realdev_ofp_port, int vid)
6089 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6090 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6092 if (realdev_ofp_port == ofport->realdev_ofp_port
6093 && vid == ofport->vlandev_vid) {
6097 ofproto->backer->need_revalidate = REV_RECONFIGURE;
6099 if (ofport->realdev_ofp_port) {
6102 if (realdev_ofp_port && ofport->bundle) {
6103 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6104 * themselves be part of a bundle. */
6105 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6108 ofport->realdev_ofp_port = realdev_ofp_port;
6109 ofport->vlandev_vid = vid;
6111 if (realdev_ofp_port) {
6112 vsp_add(ofport, realdev_ofp_port, vid);
6119 hash_realdev_vid(ofp_port_t realdev_ofp_port, int vid)
6121 return hash_2words(ofp_to_u16(realdev_ofp_port), vid);
6125 ofproto_has_vlan_splinters(const struct ofproto_dpif *ofproto)
6126 OVS_EXCLUDED(ofproto->vsp_mutex)
6130 ovs_mutex_lock(&ofproto->vsp_mutex);
6131 ret = !hmap_is_empty(&ofproto->realdev_vid_map);
6132 ovs_mutex_unlock(&ofproto->vsp_mutex);
6137 vsp_realdev_to_vlandev__(const struct ofproto_dpif *ofproto,
6138 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6139 OVS_REQUIRES(ofproto->vsp_mutex)
6141 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6142 int vid = vlan_tci_to_vid(vlan_tci);
6143 const struct vlan_splinter *vsp;
6145 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6146 hash_realdev_vid(realdev_ofp_port, vid),
6147 &ofproto->realdev_vid_map) {
6148 if (vsp->realdev_ofp_port == realdev_ofp_port
6149 && vsp->vid == vid) {
6150 return vsp->vlandev_ofp_port;
6154 return realdev_ofp_port;
6157 /* Returns the OFP port number of the Linux VLAN device that corresponds to
6158 * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
6159 * 'struct ofport_dpif'. For example, given 'realdev_ofp_port' of eth0 and
6160 * 'vlan_tci' 9, it would return the port number of eth0.9.
6162 * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
6163 * function just returns its 'realdev_ofp_port' argument. */
6165 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6166 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6167 OVS_EXCLUDED(ofproto->vsp_mutex)
6171 ovs_mutex_lock(&ofproto->vsp_mutex);
6172 ret = vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, vlan_tci);
6173 ovs_mutex_unlock(&ofproto->vsp_mutex);
6177 static struct vlan_splinter *
6178 vlandev_find(const struct ofproto_dpif *ofproto, ofp_port_t vlandev_ofp_port)
6180 struct vlan_splinter *vsp;
6182 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node,
6183 hash_ofp_port(vlandev_ofp_port),
6184 &ofproto->vlandev_map) {
6185 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6193 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6194 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6195 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6196 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6197 * eth0 and store 9 in '*vid'.
6199 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6200 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6203 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6204 ofp_port_t vlandev_ofp_port, int *vid)
6205 OVS_REQUIRES(ofproto->vsp_mutex)
6207 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6208 const struct vlan_splinter *vsp;
6210 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6215 return vsp->realdev_ofp_port;
6221 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
6222 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
6223 * 'flow->in_port' to the "real" device backing the VLAN device, sets
6224 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
6225 * always the case unless VLAN splinters are enabled), returns false without
6226 * making any changes. */
6228 vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
6229 OVS_EXCLUDED(ofproto->vsp_mutex)
6234 ovs_mutex_lock(&ofproto->vsp_mutex);
6235 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port.ofp_port, &vid);
6236 ovs_mutex_unlock(&ofproto->vsp_mutex);
6241 /* Cause the flow to be processed as if it came in on the real device with
6242 * the VLAN device's VLAN ID. */
6243 flow->in_port.ofp_port = realdev;
6244 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
6249 vsp_remove(struct ofport_dpif *port)
6251 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6252 struct vlan_splinter *vsp;
6254 ovs_mutex_lock(&ofproto->vsp_mutex);
6255 vsp = vlandev_find(ofproto, port->up.ofp_port);
6257 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6258 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6261 port->realdev_ofp_port = 0;
6263 VLOG_ERR("missing vlan device record");
6265 ovs_mutex_unlock(&ofproto->vsp_mutex);
6269 vsp_add(struct ofport_dpif *port, ofp_port_t realdev_ofp_port, int vid)
6271 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6273 ovs_mutex_lock(&ofproto->vsp_mutex);
6274 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6275 && (vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, htons(vid))
6276 == realdev_ofp_port)) {
6277 struct vlan_splinter *vsp;
6279 vsp = xmalloc(sizeof *vsp);
6280 vsp->realdev_ofp_port = realdev_ofp_port;
6281 vsp->vlandev_ofp_port = port->up.ofp_port;
6284 port->realdev_ofp_port = realdev_ofp_port;
6286 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6287 hash_ofp_port(port->up.ofp_port));
6288 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6289 hash_realdev_vid(realdev_ofp_port, vid));
6291 VLOG_ERR("duplicate vlan device record");
6293 ovs_mutex_unlock(&ofproto->vsp_mutex);
6297 ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
6299 const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
6300 return ofport ? ofport->odp_port : ODPP_NONE;
6303 struct ofport_dpif *
6304 odp_port_to_ofport(const struct dpif_backer *backer, odp_port_t odp_port)
6306 struct ofport_dpif *port;
6308 ovs_rwlock_rdlock(&backer->odp_to_ofport_lock);
6309 HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node, hash_odp_port(odp_port),
6310 &backer->odp_to_ofport_map) {
6311 if (port->odp_port == odp_port) {
6312 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6317 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6322 odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
6324 struct ofport_dpif *port;
6326 port = odp_port_to_ofport(ofproto->backer, odp_port);
6327 if (port && &ofproto->up == port->up.ofproto) {
6328 return port->up.ofp_port;
6334 /* Compute exponentially weighted moving average, adding 'new' as the newest,
6335 * most heavily weighted element. 'base' designates the rate of decay: after
6336 * 'base' further updates, 'new''s weight in the EWMA decays to about 1/e
6339 exp_mavg(double *avg, int base, double new)
6341 *avg = (*avg * (base - 1) + new) / base;
6345 update_moving_averages(struct dpif_backer *backer)
6347 const int min_ms = 60 * 1000; /* milliseconds in one minute. */
6348 long long int minutes = (time_msec() - backer->created) / min_ms;
6351 backer->lifetime.add_rate = (double) backer->total_subfacet_add_count
6353 backer->lifetime.del_rate = (double) backer->total_subfacet_del_count
6356 backer->lifetime.add_rate = 0.0;
6357 backer->lifetime.del_rate = 0.0;
6360 /* Update hourly averages on the minute boundaries. */
6361 if (time_msec() - backer->last_minute >= min_ms) {
6362 exp_mavg(&backer->hourly.add_rate, 60, backer->subfacet_add_count);
6363 exp_mavg(&backer->hourly.del_rate, 60, backer->subfacet_del_count);
6365 /* Update daily averages on the hour boundaries. */
6366 if ((backer->last_minute - backer->created) / min_ms % 60 == 59) {
6367 exp_mavg(&backer->daily.add_rate, 24, backer->hourly.add_rate);
6368 exp_mavg(&backer->daily.del_rate, 24, backer->hourly.del_rate);
6371 backer->total_subfacet_add_count += backer->subfacet_add_count;
6372 backer->total_subfacet_del_count += backer->subfacet_del_count;
6373 backer->subfacet_add_count = 0;
6374 backer->subfacet_del_count = 0;
6375 backer->last_minute += min_ms;
6379 const struct ofproto_class ofproto_dpif_class = {
6414 port_is_lacp_current,
6415 NULL, /* rule_choose_table */
6424 rule_modify_actions,
6438 get_stp_port_status,
6445 is_mirror_output_bundle,
6446 forward_bpdu_changed,
6447 set_mac_table_config,
6449 NULL, /* meter_get_features */
6450 NULL, /* meter_set */
6451 NULL, /* meter_get */
6452 NULL, /* meter_del */
6453 NULL, /* group_alloc */
6454 NULL, /* group_construct */
6455 NULL, /* group_destruct */
6456 NULL, /* group_dealloc */
6457 NULL, /* group_modify */
6458 NULL, /* group_get_stats */