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);
86 static void rule_get_stats(struct rule *, uint64_t *packets, uint64_t *bytes);
89 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
90 struct ofproto_dpif *ofproto; /* Owning ofproto. */
91 void *aux; /* Key supplied by ofproto's client. */
92 char *name; /* Identifier for log messages. */
95 struct list ports; /* Contains "struct ofport"s. */
96 enum port_vlan_mode vlan_mode; /* VLAN mode */
97 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
98 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
99 * NULL if all VLANs are trunked. */
100 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
101 struct bond *bond; /* Nonnull iff more than one port. */
102 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
105 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
108 static void bundle_remove(struct ofport *);
109 static void bundle_update(struct ofbundle *);
110 static void bundle_destroy(struct ofbundle *);
111 static void bundle_del_port(struct ofport_dpif *);
112 static void bundle_run(struct ofbundle *);
113 static void bundle_wait(struct ofbundle *);
115 static void stp_run(struct ofproto_dpif *ofproto);
116 static void stp_wait(struct ofproto_dpif *ofproto);
117 static int set_stp_port(struct ofport *,
118 const struct ofproto_port_stp_settings *);
120 static void compose_slow_path(const struct ofproto_dpif *, const struct flow *,
121 enum slow_path_reason,
122 uint64_t *stub, size_t stub_size,
123 const struct nlattr **actionsp,
124 size_t *actions_lenp);
126 /* A subfacet (see "struct subfacet" below) has three possible installation
129 * - SF_NOT_INSTALLED: Not installed in the datapath. This will only be the
130 * case just after the subfacet is created, just before the subfacet is
131 * destroyed, or if the datapath returns an error when we try to install a
134 * - SF_FAST_PATH: The subfacet's actions are installed in the datapath.
136 * - SF_SLOW_PATH: An action that sends every packet for the subfacet through
137 * ofproto_dpif is installed in the datapath.
140 SF_NOT_INSTALLED, /* No datapath flow for this subfacet. */
141 SF_FAST_PATH, /* Full actions are installed. */
142 SF_SLOW_PATH, /* Send-to-userspace action is installed. */
145 /* A dpif flow and actions associated with a facet.
147 * See also the large comment on struct facet. */
150 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
151 struct list list_node; /* In struct facet's 'facets' list. */
152 struct facet *facet; /* Owning facet. */
153 struct dpif_backer *backer; /* Owning backer. */
155 enum odp_key_fitness key_fitness;
159 long long int used; /* Time last used; time created if not used. */
160 long long int created; /* Time created. */
162 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
163 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
165 enum subfacet_path path; /* Installed in datapath? */
168 #define SUBFACET_DESTROY_MAX_BATCH 50
170 static struct subfacet *subfacet_create(struct facet *, struct flow_miss *);
171 static struct subfacet *subfacet_find(struct dpif_backer *,
172 const struct nlattr *key, size_t key_len,
174 static void subfacet_destroy(struct subfacet *);
175 static void subfacet_destroy__(struct subfacet *);
176 static void subfacet_destroy_batch(struct dpif_backer *,
177 struct subfacet **, int n);
178 static void subfacet_reset_dp_stats(struct subfacet *,
179 struct dpif_flow_stats *);
180 static void subfacet_update_stats(struct subfacet *,
181 const struct dpif_flow_stats *);
182 static int subfacet_install(struct subfacet *,
183 const struct ofpbuf *odp_actions,
184 struct dpif_flow_stats *);
185 static void subfacet_uninstall(struct subfacet *);
187 /* A unique, non-overlapping instantiation of an OpenFlow flow.
189 * A facet associates a "struct flow", which represents the Open vSwitch
190 * userspace idea of an exact-match flow, with one or more subfacets.
191 * While the facet is created based on an exact-match flow, it is stored
192 * within the ofproto based on the wildcards that could be expressed
193 * based on the flow table and other configuration. (See the 'wc'
194 * description in "struct xlate_out" for more details.)
196 * Each subfacet tracks the datapath's idea of the flow equivalent to
197 * the facet. When the kernel module (or other dpif implementation) and
198 * Open vSwitch userspace agree on the definition of a flow key, there
199 * is exactly one subfacet per facet. If the dpif implementation
200 * supports more-specific flow matching than userspace, however, a facet
201 * can have more than one subfacet. Examples include the dpif
202 * implementation not supporting the same wildcards as userspace or some
203 * distinction in flow that userspace simply doesn't understand.
205 * Flow expiration works in terms of subfacets, so a facet must have at
206 * least one subfacet or it will never expire, leaking memory. */
209 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
210 struct ofproto_dpif *ofproto;
213 struct list subfacets;
214 long long int used; /* Time last used; time created if not used. */
217 struct flow flow; /* Flow of the creating subfacet. */
218 struct cls_rule cr; /* In 'ofproto_dpif's facets classifier. */
222 * - Do include packets and bytes sent "by hand", e.g. with
225 * - Do include packets and bytes that were obtained from the datapath
226 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
227 * DPIF_FP_ZERO_STATS).
229 * - Do not include packets or bytes that can be obtained from the
230 * datapath for any existing subfacet.
232 uint64_t packet_count; /* Number of packets received. */
233 uint64_t byte_count; /* Number of bytes received. */
235 /* Resubmit statistics. */
236 uint64_t prev_packet_count; /* Number of packets from last stats push. */
237 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
238 long long int prev_used; /* Used time from last stats push. */
241 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
242 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
243 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
245 struct xlate_out xout;
247 /* Storage for a single subfacet, to reduce malloc() time and space
248 * overhead. (A facet always has at least one subfacet and in the common
249 * case has exactly one subfacet. However, 'one_subfacet' may not
250 * always be valid, since it could have been removed after newer
251 * subfacets were pushed onto the 'subfacets' list.) */
252 struct subfacet one_subfacet;
254 long long int learn_rl; /* Rate limiter for facet_learn(). */
257 static struct facet *facet_create(const struct flow_miss *);
258 static void facet_remove(struct facet *);
259 static void facet_free(struct facet *);
261 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
262 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
263 const struct flow *);
264 static bool facet_revalidate(struct facet *);
265 static bool facet_check_consistency(struct facet *);
267 static void facet_flush_stats(struct facet *);
269 static void facet_reset_counters(struct facet *);
270 static void flow_push_stats(struct ofproto_dpif *, struct flow *,
271 struct dpif_flow_stats *, bool may_learn);
272 static void facet_push_stats(struct facet *, bool may_learn);
273 static void facet_learn(struct facet *);
274 static void facet_account(struct facet *);
275 static void push_all_stats(void);
277 static bool facet_is_controller_flow(struct facet *);
280 struct hmap_node odp_port_node; /* In dpif_backer's "odp_to_ofport_map". */
284 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
285 struct list bundle_node; /* In struct ofbundle's "ports" list. */
286 struct cfm *cfm; /* Connectivity Fault Management, if any. */
287 struct bfd *bfd; /* BFD, if any. */
288 bool may_enable; /* May be enabled in bonds. */
289 bool is_tunnel; /* This port is a tunnel. */
290 long long int carrier_seq; /* Carrier status changes. */
291 struct ofport_dpif *peer; /* Peer if patch port. */
294 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
295 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
296 long long int stp_state_entered;
298 /* Queue to DSCP mapping. */
299 struct ofproto_port_queue *qdscp;
302 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
304 * This is deprecated. It is only for compatibility with broken device
305 * drivers in old versions of Linux that do not properly support VLANs when
306 * VLAN devices are not used. When broken device drivers are no longer in
307 * widespread use, we will delete these interfaces. */
308 ofp_port_t realdev_ofp_port;
312 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
314 * This is deprecated. It is only for compatibility with broken device drivers
315 * in old versions of Linux that do not properly support VLANs when VLAN
316 * devices are not used. When broken device drivers are no longer in
317 * widespread use, we will delete these interfaces. */
318 struct vlan_splinter {
319 struct hmap_node realdev_vid_node;
320 struct hmap_node vlandev_node;
321 ofp_port_t realdev_ofp_port;
322 ofp_port_t vlandev_ofp_port;
326 static void vsp_remove(struct ofport_dpif *);
327 static void vsp_add(struct ofport_dpif *, ofp_port_t realdev_ofp_port, int vid);
329 static odp_port_t ofp_port_to_odp_port(const struct ofproto_dpif *,
332 static ofp_port_t odp_port_to_ofp_port(const struct ofproto_dpif *,
335 static struct ofport_dpif *
336 ofport_dpif_cast(const struct ofport *ofport)
338 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
341 static void port_run(struct ofport_dpif *);
342 static void port_run_fast(struct ofport_dpif *);
343 static void port_wait(struct ofport_dpif *);
344 static int set_bfd(struct ofport *, const struct smap *);
345 static int set_cfm(struct ofport *, const struct cfm_settings *);
346 static void ofport_update_peer(struct ofport_dpif *);
347 static void run_fast_rl(void);
348 static int run_fast(struct ofproto *);
350 struct dpif_completion {
351 struct list list_node;
352 struct ofoperation *op;
355 /* Reasons that we might need to revalidate every facet, and corresponding
358 * A value of 0 means that there is no need to revalidate.
360 * It would be nice to have some cleaner way to integrate with coverage
361 * counters, but with only a few reasons I guess this is good enough for
363 enum revalidate_reason {
364 REV_RECONFIGURE = 1, /* Switch configuration changed. */
365 REV_STP, /* Spanning tree protocol port status change. */
366 REV_BOND, /* Bonding changed. */
367 REV_PORT_TOGGLED, /* Port enabled or disabled by CFM, LACP, ...*/
368 REV_FLOW_TABLE, /* Flow table changed. */
369 REV_MAC_LEARNING, /* Mac learning changed. */
370 REV_INCONSISTENCY /* Facet self-check failed. */
372 COVERAGE_DEFINE(rev_reconfigure);
373 COVERAGE_DEFINE(rev_stp);
374 COVERAGE_DEFINE(rev_bond);
375 COVERAGE_DEFINE(rev_port_toggled);
376 COVERAGE_DEFINE(rev_flow_table);
377 COVERAGE_DEFINE(rev_mac_learning);
378 COVERAGE_DEFINE(rev_inconsistency);
380 struct avg_subfacet_rates {
381 double add_rate; /* Moving average of new flows created per minute. */
382 double del_rate; /* Moving average of flows deleted per minute. */
385 /* All datapaths of a given type share a single dpif backer instance. */
391 struct timer next_expiration;
393 struct ovs_rwlock odp_to_ofport_lock;
394 struct hmap odp_to_ofport_map OVS_GUARDED; /* ODP port to ofport map. */
396 struct simap tnl_backers; /* Set of dpif ports backing tunnels. */
398 /* Facet revalidation flags applying to facets which use this backer. */
399 enum revalidate_reason need_revalidate; /* Revalidate every facet. */
401 struct hmap drop_keys; /* Set of dropped odp keys. */
402 bool recv_set_enable; /* Enables or disables receiving packets. */
404 struct hmap subfacets;
405 struct governor *governor;
407 /* Subfacet statistics.
409 * These keep track of the total number of subfacets added and deleted and
410 * flow life span. They are useful for computing the flow rates stats
411 * exposed via "ovs-appctl dpif/show". The goal is to learn about
412 * traffic patterns in ways that we can use later to improve Open vSwitch
413 * performance in new situations. */
414 long long int created; /* Time when it is created. */
415 unsigned max_n_subfacet; /* Maximum number of flows */
416 unsigned avg_n_subfacet; /* Average number of flows. */
417 long long int avg_subfacet_life; /* Average life span of subfacets. */
419 /* The average number of subfacets... */
420 struct avg_subfacet_rates hourly; /* ...over the last hour. */
421 struct avg_subfacet_rates daily; /* ...over the last day. */
422 struct avg_subfacet_rates lifetime; /* ...over the switch lifetime. */
423 long long int last_minute; /* Last time 'hourly' was updated. */
425 /* Number of subfacets added or deleted since 'last_minute'. */
426 unsigned subfacet_add_count;
427 unsigned subfacet_del_count;
429 /* Number of subfacets added or deleted from 'created' to 'last_minute.' */
430 unsigned long long int total_subfacet_add_count;
431 unsigned long long int total_subfacet_del_count;
433 /* Number of upcall handling threads. */
434 unsigned int n_handler_threads;
437 /* All existing ofproto_backer instances, indexed by ofproto->up.type. */
438 static struct shash all_dpif_backers = SHASH_INITIALIZER(&all_dpif_backers);
440 static void drop_key_clear(struct dpif_backer *);
441 static void update_moving_averages(struct dpif_backer *backer);
443 struct ofproto_dpif {
444 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
446 struct dpif_backer *backer;
448 /* Special OpenFlow rules. */
449 struct rule_dpif *miss_rule; /* Sends flow table misses to controller. */
450 struct rule_dpif *no_packet_in_rule; /* Drops flow table misses. */
451 struct rule_dpif *drop_frags_rule; /* Used in OFPC_FRAG_DROP mode. */
454 struct netflow *netflow;
455 struct dpif_sflow *sflow;
456 struct dpif_ipfix *ipfix;
457 struct hmap bundles; /* Contains "struct ofbundle"s. */
458 struct mac_learning *ml;
459 bool has_bonded_bundles;
460 struct mbridge *mbridge;
463 struct classifier facets; /* Contains 'struct facet's. */
464 long long int consistency_rl;
466 /* Support for debugging async flow mods. */
467 struct list completions;
469 struct netdev_stats stats; /* To account packets generated and consumed in
474 long long int stp_last_tick;
476 /* VLAN splinters. */
477 struct ovs_mutex vsp_mutex;
478 struct hmap realdev_vid_map OVS_GUARDED; /* (realdev,vid) -> vlandev. */
479 struct hmap vlandev_map OVS_GUARDED; /* vlandev -> (realdev,vid). */
482 struct sset ports; /* Set of standard port names. */
483 struct sset ghost_ports; /* Ports with no datapath port. */
484 struct sset port_poll_set; /* Queued names for port_poll() reply. */
485 int port_poll_errno; /* Last errno for port_poll() reply. */
487 /* Per ofproto's dpif stats. */
492 struct ovs_mutex flow_mod_mutex;
493 struct list flow_mods OVS_GUARDED;
494 size_t n_flow_mods OVS_GUARDED;
496 struct ovs_mutex pin_mutex;
497 struct list pins OVS_GUARDED;
498 size_t n_pins OVS_GUARDED;
501 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
502 * for debugging the asynchronous flow_mod implementation.) */
505 /* By default, flows in the datapath are wildcarded (megaflows). They
506 * may be disabled with the "ovs-appctl dpif/disable-megaflows" command. */
507 static bool enable_megaflows = true;
509 /* All existing ofproto_dpif instances, indexed by ->up.name. */
510 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
512 static void ofproto_dpif_unixctl_init(void);
514 static inline struct ofproto_dpif *
515 ofproto_dpif_cast(const struct ofproto *ofproto)
517 ovs_assert(ofproto->ofproto_class == &ofproto_dpif_class);
518 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
521 static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *ofproto,
522 ofp_port_t ofp_port);
523 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
524 const struct ofpbuf *packet, struct ds *);
527 static void handle_upcalls(struct dpif_backer *);
529 /* Flow expiration. */
530 static int expire(struct dpif_backer *);
533 static void send_netflow_active_timeouts(struct ofproto_dpif *);
536 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
538 /* Global variables. */
539 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
541 /* Initial mappings of port to bridge mappings. */
542 static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
544 /* Executes and takes ownership of 'fm'. */
546 ofproto_dpif_flow_mod(struct ofproto_dpif *ofproto,
547 struct ofputil_flow_mod *fm)
549 ovs_mutex_lock(&ofproto->flow_mod_mutex);
550 if (ofproto->n_flow_mods > 1024) {
551 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
552 COVERAGE_INC(flow_mod_overflow);
558 list_push_back(&ofproto->flow_mods, &fm->list_node);
559 ofproto->n_flow_mods++;
560 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
564 ofproto_dpif_send_packet_in(struct ofproto_dpif *ofproto,
565 struct ofputil_packet_in *pin)
567 ovs_mutex_lock(&ofproto->pin_mutex);
568 if (ofproto->n_pins > 1024) {
569 ovs_mutex_unlock(&ofproto->pin_mutex);
570 COVERAGE_INC(packet_in_overflow);
571 free(CONST_CAST(void *, pin->packet));
576 list_push_back(&ofproto->pins, &pin->list_node);
578 ovs_mutex_unlock(&ofproto->pin_mutex);
581 /* Factory functions. */
584 init(const struct shash *iface_hints)
586 struct shash_node *node;
588 /* Make a local copy, since we don't own 'iface_hints' elements. */
589 SHASH_FOR_EACH(node, iface_hints) {
590 const struct iface_hint *orig_hint = node->data;
591 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
593 new_hint->br_name = xstrdup(orig_hint->br_name);
594 new_hint->br_type = xstrdup(orig_hint->br_type);
595 new_hint->ofp_port = orig_hint->ofp_port;
597 shash_add(&init_ofp_ports, node->name, new_hint);
602 enumerate_types(struct sset *types)
604 dp_enumerate_types(types);
608 enumerate_names(const char *type, struct sset *names)
610 struct ofproto_dpif *ofproto;
613 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
614 if (strcmp(type, ofproto->up.type)) {
617 sset_add(names, ofproto->up.name);
624 del(const char *type, const char *name)
629 error = dpif_open(name, type, &dpif);
631 error = dpif_delete(dpif);
638 port_open_type(const char *datapath_type, const char *port_type)
640 return dpif_port_open_type(datapath_type, port_type);
643 /* Type functions. */
645 static void process_dpif_port_changes(struct dpif_backer *);
646 static void process_dpif_all_ports_changed(struct dpif_backer *);
647 static void process_dpif_port_change(struct dpif_backer *,
648 const char *devname);
649 static void process_dpif_port_error(struct dpif_backer *, int error);
651 static struct ofproto_dpif *
652 lookup_ofproto_dpif_by_port_name(const char *name)
654 struct ofproto_dpif *ofproto;
656 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
657 if (sset_contains(&ofproto->ports, name)) {
666 type_run(const char *type)
668 static long long int push_timer = LLONG_MIN;
669 struct dpif_backer *backer;
671 backer = shash_find_data(&all_dpif_backers, type);
673 /* This is not necessarily a problem, since backers are only
674 * created on demand. */
678 dpif_run(backer->dpif);
680 /* The most natural place to push facet statistics is when they're pulled
681 * from the datapath. However, when there are many flows in the datapath,
682 * this expensive operation can occur so frequently, that it reduces our
683 * ability to quickly set up flows. To reduce the cost, we push statistics
685 if (time_msec() > push_timer) {
686 push_timer = time_msec() + 2000;
690 /* If vswitchd started with other_config:flow_restore_wait set as "true",
691 * and the configuration has now changed to "false", enable receiving
692 * packets from the datapath. */
693 if (!backer->recv_set_enable && !ofproto_get_flow_restore_wait()) {
696 backer->recv_set_enable = true;
698 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
700 udpif_recv_set(backer->udpif, 0, false);
701 VLOG_ERR("Failed to enable receiving packets in dpif.");
704 udpif_recv_set(backer->udpif, n_handler_threads,
705 backer->recv_set_enable);
706 dpif_flow_flush(backer->dpif);
707 backer->need_revalidate = REV_RECONFIGURE;
710 /* If the n_handler_threads is reconfigured, call udpif_recv_set()
711 * to reset the handler threads. */
712 if (backer->n_handler_threads != n_handler_threads) {
713 udpif_recv_set(backer->udpif, n_handler_threads,
714 backer->recv_set_enable);
715 backer->n_handler_threads = n_handler_threads;
718 if (backer->need_revalidate) {
719 struct ofproto_dpif *ofproto;
720 struct simap_node *node;
721 struct simap tmp_backers;
723 /* Handle tunnel garbage collection. */
724 simap_init(&tmp_backers);
725 simap_swap(&backer->tnl_backers, &tmp_backers);
727 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
728 struct ofport_dpif *iter;
730 if (backer != ofproto->backer) {
734 HMAP_FOR_EACH (iter, up.hmap_node, &ofproto->up.ports) {
735 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
738 if (!iter->is_tunnel) {
742 dp_port = netdev_vport_get_dpif_port(iter->up.netdev,
743 namebuf, sizeof namebuf);
744 node = simap_find(&tmp_backers, dp_port);
746 simap_put(&backer->tnl_backers, dp_port, node->data);
747 simap_delete(&tmp_backers, node);
748 node = simap_find(&backer->tnl_backers, dp_port);
750 node = simap_find(&backer->tnl_backers, dp_port);
752 odp_port_t odp_port = ODPP_NONE;
754 if (!dpif_port_add(backer->dpif, iter->up.netdev,
756 simap_put(&backer->tnl_backers, dp_port,
757 odp_to_u32(odp_port));
758 node = simap_find(&backer->tnl_backers, dp_port);
763 iter->odp_port = node ? u32_to_odp(node->data) : ODPP_NONE;
764 if (tnl_port_reconfigure(iter, iter->up.netdev,
766 backer->need_revalidate = REV_RECONFIGURE;
771 SIMAP_FOR_EACH (node, &tmp_backers) {
772 dpif_port_del(backer->dpif, u32_to_odp(node->data));
774 simap_destroy(&tmp_backers);
776 switch (backer->need_revalidate) {
777 case REV_RECONFIGURE: COVERAGE_INC(rev_reconfigure); break;
778 case REV_STP: COVERAGE_INC(rev_stp); break;
779 case REV_BOND: COVERAGE_INC(rev_bond); break;
780 case REV_PORT_TOGGLED: COVERAGE_INC(rev_port_toggled); break;
781 case REV_FLOW_TABLE: COVERAGE_INC(rev_flow_table); break;
782 case REV_MAC_LEARNING: COVERAGE_INC(rev_mac_learning); break;
783 case REV_INCONSISTENCY: COVERAGE_INC(rev_inconsistency); break;
785 backer->need_revalidate = 0;
787 /* Clear the drop_keys in case we should now be accepting some
788 * formerly dropped flows. */
789 drop_key_clear(backer);
791 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
792 struct facet *facet, *next;
793 struct ofport_dpif *ofport;
794 struct cls_cursor cursor;
795 struct ofbundle *bundle;
797 if (ofproto->backer != backer) {
801 ovs_rwlock_wrlock(&xlate_rwlock);
802 xlate_ofproto_set(ofproto, ofproto->up.name,
803 ofproto->backer->dpif, ofproto->miss_rule,
804 ofproto->no_packet_in_rule, ofproto->ml,
805 ofproto->stp, ofproto->mbridge,
806 ofproto->sflow, ofproto->ipfix,
807 ofproto->up.frag_handling,
808 ofproto->up.forward_bpdu,
809 connmgr_has_in_band(ofproto->up.connmgr),
810 ofproto->netflow != NULL);
812 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
813 xlate_bundle_set(ofproto, bundle, bundle->name,
814 bundle->vlan_mode, bundle->vlan,
815 bundle->trunks, bundle->use_priority_tags,
816 bundle->bond, bundle->lacp,
820 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
821 int stp_port = ofport->stp_port
822 ? stp_port_no(ofport->stp_port)
824 xlate_ofport_set(ofproto, ofport->bundle, ofport,
825 ofport->up.ofp_port, ofport->odp_port,
826 ofport->up.netdev, ofport->cfm,
827 ofport->bfd, ofport->peer, stp_port,
828 ofport->qdscp, ofport->n_qdscp,
829 ofport->up.pp.config, ofport->is_tunnel,
832 ovs_rwlock_unlock(&xlate_rwlock);
834 /* Only ofproto-dpif cares about the facet classifier so we just
835 * lock cls_cursor_init() to appease the thread safety analysis. */
836 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
837 cls_cursor_init(&cursor, &ofproto->facets, NULL);
838 ovs_rwlock_unlock(&ofproto->facets.rwlock);
839 CLS_CURSOR_FOR_EACH_SAFE (facet, next, cr, &cursor) {
840 facet_revalidate(facet);
845 udpif_revalidate(backer->udpif);
848 if (!backer->recv_set_enable) {
849 /* Wake up before a max of 1000ms. */
850 timer_set_duration(&backer->next_expiration, 1000);
851 } else if (timer_expired(&backer->next_expiration)) {
852 int delay = expire(backer);
853 timer_set_duration(&backer->next_expiration, delay);
856 process_dpif_port_changes(backer);
858 if (backer->governor) {
861 governor_run(backer->governor);
863 /* If the governor has shrunk to its minimum size and the number of
864 * subfacets has dwindled, then drop the governor entirely.
866 * For hysteresis, the number of subfacets to drop the governor is
867 * smaller than the number needed to trigger its creation. */
868 n_subfacets = hmap_count(&backer->subfacets);
869 if (n_subfacets * 4 < flow_eviction_threshold
870 && governor_is_idle(backer->governor)) {
871 governor_destroy(backer->governor);
872 backer->governor = NULL;
879 /* Check for and handle port changes in 'backer''s dpif. */
881 process_dpif_port_changes(struct dpif_backer *backer)
887 error = dpif_port_poll(backer->dpif, &devname);
893 process_dpif_all_ports_changed(backer);
897 process_dpif_port_change(backer, devname);
902 process_dpif_port_error(backer, error);
909 process_dpif_all_ports_changed(struct dpif_backer *backer)
911 struct ofproto_dpif *ofproto;
912 struct dpif_port dpif_port;
913 struct dpif_port_dump dump;
914 struct sset devnames;
917 sset_init(&devnames);
918 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
919 if (ofproto->backer == backer) {
920 struct ofport *ofport;
922 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
923 sset_add(&devnames, netdev_get_name(ofport->netdev));
927 DPIF_PORT_FOR_EACH (&dpif_port, &dump, backer->dpif) {
928 sset_add(&devnames, dpif_port.name);
931 SSET_FOR_EACH (devname, &devnames) {
932 process_dpif_port_change(backer, devname);
934 sset_destroy(&devnames);
938 process_dpif_port_change(struct dpif_backer *backer, const char *devname)
940 struct ofproto_dpif *ofproto;
941 struct dpif_port port;
943 /* Don't report on the datapath's device. */
944 if (!strcmp(devname, dpif_base_name(backer->dpif))) {
948 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node,
949 &all_ofproto_dpifs) {
950 if (simap_contains(&ofproto->backer->tnl_backers, devname)) {
955 ofproto = lookup_ofproto_dpif_by_port_name(devname);
956 if (dpif_port_query_by_name(backer->dpif, devname, &port)) {
957 /* The port was removed. If we know the datapath,
958 * report it through poll_set(). If we don't, it may be
959 * notifying us of a removal we initiated, so ignore it.
960 * If there's a pending ENOBUFS, let it stand, since
961 * everything will be reevaluated. */
962 if (ofproto && ofproto->port_poll_errno != ENOBUFS) {
963 sset_add(&ofproto->port_poll_set, devname);
964 ofproto->port_poll_errno = 0;
966 } else if (!ofproto) {
967 /* The port was added, but we don't know with which
968 * ofproto we should associate it. Delete it. */
969 dpif_port_del(backer->dpif, port.port_no);
971 struct ofport_dpif *ofport;
973 ofport = ofport_dpif_cast(shash_find_data(
974 &ofproto->up.port_by_name, devname));
976 && ofport->odp_port != port.port_no
977 && !odp_port_to_ofport(backer, port.port_no))
979 /* 'ofport''s datapath port number has changed from
980 * 'ofport->odp_port' to 'port.port_no'. Update our internal data
981 * structures to match. */
982 ovs_rwlock_wrlock(&backer->odp_to_ofport_lock);
983 hmap_remove(&backer->odp_to_ofport_map, &ofport->odp_port_node);
984 ofport->odp_port = port.port_no;
985 hmap_insert(&backer->odp_to_ofport_map, &ofport->odp_port_node,
986 hash_odp_port(port.port_no));
987 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
988 backer->need_revalidate = REV_RECONFIGURE;
991 dpif_port_destroy(&port);
994 /* Propagate 'error' to all ofprotos based on 'backer'. */
996 process_dpif_port_error(struct dpif_backer *backer, int error)
998 struct ofproto_dpif *ofproto;
1000 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1001 if (ofproto->backer == backer) {
1002 sset_clear(&ofproto->port_poll_set);
1003 ofproto->port_poll_errno = error;
1009 dpif_backer_run_fast(struct dpif_backer *backer)
1011 udpif_run(backer->udpif);
1012 handle_upcalls(backer);
1018 type_run_fast(const char *type)
1020 struct dpif_backer *backer;
1022 backer = shash_find_data(&all_dpif_backers, type);
1024 /* This is not necessarily a problem, since backers are only
1025 * created on demand. */
1029 return dpif_backer_run_fast(backer);
1035 static long long int port_rl = LLONG_MIN;
1037 if (time_msec() >= port_rl) {
1038 struct ofproto_dpif *ofproto;
1040 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1041 run_fast(&ofproto->up);
1043 port_rl = time_msec() + 200;
1048 type_wait(const char *type)
1050 struct dpif_backer *backer;
1052 backer = shash_find_data(&all_dpif_backers, type);
1054 /* This is not necessarily a problem, since backers are only
1055 * created on demand. */
1059 if (backer->governor) {
1060 governor_wait(backer->governor);
1063 timer_wait(&backer->next_expiration);
1064 dpif_wait(backer->dpif);
1065 udpif_wait(backer->udpif);
1068 /* Basic life-cycle. */
1070 static int add_internal_flows(struct ofproto_dpif *);
1072 static struct ofproto *
1075 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
1076 return &ofproto->up;
1080 dealloc(struct ofproto *ofproto_)
1082 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1087 close_dpif_backer(struct dpif_backer *backer)
1089 struct shash_node *node;
1091 ovs_assert(backer->refcount > 0);
1093 if (--backer->refcount) {
1097 drop_key_clear(backer);
1098 hmap_destroy(&backer->drop_keys);
1100 simap_destroy(&backer->tnl_backers);
1101 ovs_rwlock_destroy(&backer->odp_to_ofport_lock);
1102 hmap_destroy(&backer->odp_to_ofport_map);
1103 node = shash_find(&all_dpif_backers, backer->type);
1105 shash_delete(&all_dpif_backers, node);
1106 udpif_destroy(backer->udpif);
1107 dpif_close(backer->dpif);
1109 ovs_assert(hmap_is_empty(&backer->subfacets));
1110 hmap_destroy(&backer->subfacets);
1111 governor_destroy(backer->governor);
1116 /* Datapath port slated for removal from datapath. */
1117 struct odp_garbage {
1118 struct list list_node;
1119 odp_port_t odp_port;
1123 open_dpif_backer(const char *type, struct dpif_backer **backerp)
1125 struct dpif_backer *backer;
1126 struct dpif_port_dump port_dump;
1127 struct dpif_port port;
1128 struct shash_node *node;
1129 struct list garbage_list;
1130 struct odp_garbage *garbage, *next;
1136 backer = shash_find_data(&all_dpif_backers, type);
1143 backer_name = xasprintf("ovs-%s", type);
1145 /* Remove any existing datapaths, since we assume we're the only
1146 * userspace controlling the datapath. */
1148 dp_enumerate_names(type, &names);
1149 SSET_FOR_EACH(name, &names) {
1150 struct dpif *old_dpif;
1152 /* Don't remove our backer if it exists. */
1153 if (!strcmp(name, backer_name)) {
1157 if (dpif_open(name, type, &old_dpif)) {
1158 VLOG_WARN("couldn't open old datapath %s to remove it", name);
1160 dpif_delete(old_dpif);
1161 dpif_close(old_dpif);
1164 sset_destroy(&names);
1166 backer = xmalloc(sizeof *backer);
1168 error = dpif_create_and_open(backer_name, type, &backer->dpif);
1171 VLOG_ERR("failed to open datapath of type %s: %s", type,
1172 ovs_strerror(error));
1176 backer->udpif = udpif_create(backer, backer->dpif);
1178 backer->type = xstrdup(type);
1179 backer->governor = NULL;
1180 backer->refcount = 1;
1181 hmap_init(&backer->odp_to_ofport_map);
1182 ovs_rwlock_init(&backer->odp_to_ofport_lock);
1183 hmap_init(&backer->drop_keys);
1184 hmap_init(&backer->subfacets);
1185 timer_set_duration(&backer->next_expiration, 1000);
1186 backer->need_revalidate = 0;
1187 simap_init(&backer->tnl_backers);
1188 backer->recv_set_enable = !ofproto_get_flow_restore_wait();
1191 if (backer->recv_set_enable) {
1192 dpif_flow_flush(backer->dpif);
1195 /* Loop through the ports already on the datapath and remove any
1196 * that we don't need anymore. */
1197 list_init(&garbage_list);
1198 dpif_port_dump_start(&port_dump, backer->dpif);
1199 while (dpif_port_dump_next(&port_dump, &port)) {
1200 node = shash_find(&init_ofp_ports, port.name);
1201 if (!node && strcmp(port.name, dpif_base_name(backer->dpif))) {
1202 garbage = xmalloc(sizeof *garbage);
1203 garbage->odp_port = port.port_no;
1204 list_push_front(&garbage_list, &garbage->list_node);
1207 dpif_port_dump_done(&port_dump);
1209 LIST_FOR_EACH_SAFE (garbage, next, list_node, &garbage_list) {
1210 dpif_port_del(backer->dpif, garbage->odp_port);
1211 list_remove(&garbage->list_node);
1215 shash_add(&all_dpif_backers, type, backer);
1217 error = dpif_recv_set(backer->dpif, backer->recv_set_enable);
1219 VLOG_ERR("failed to listen on datapath of type %s: %s",
1220 type, ovs_strerror(error));
1221 close_dpif_backer(backer);
1224 udpif_recv_set(backer->udpif, n_handler_threads,
1225 backer->recv_set_enable);
1226 backer->n_handler_threads = n_handler_threads;
1228 backer->max_n_subfacet = 0;
1229 backer->created = time_msec();
1230 backer->last_minute = backer->created;
1231 memset(&backer->hourly, 0, sizeof backer->hourly);
1232 memset(&backer->daily, 0, sizeof backer->daily);
1233 memset(&backer->lifetime, 0, sizeof backer->lifetime);
1234 backer->subfacet_add_count = 0;
1235 backer->subfacet_del_count = 0;
1236 backer->total_subfacet_add_count = 0;
1237 backer->total_subfacet_del_count = 0;
1238 backer->avg_n_subfacet = 0;
1239 backer->avg_subfacet_life = 0;
1245 construct(struct ofproto *ofproto_)
1247 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1248 struct shash_node *node, *next;
1249 odp_port_t max_ports;
1252 error = open_dpif_backer(ofproto->up.type, &ofproto->backer);
1257 max_ports = dpif_get_max_ports(ofproto->backer->dpif);
1258 ofproto_init_max_ports(ofproto_, u16_to_ofp(MIN(odp_to_u32(max_ports),
1259 ofp_to_u16(OFPP_MAX))));
1261 ofproto->netflow = NULL;
1262 ofproto->sflow = NULL;
1263 ofproto->ipfix = NULL;
1264 ofproto->stp = NULL;
1265 hmap_init(&ofproto->bundles);
1266 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
1267 ofproto->mbridge = mbridge_create();
1268 ofproto->has_bonded_bundles = false;
1269 ovs_mutex_init(&ofproto->vsp_mutex, PTHREAD_MUTEX_NORMAL);
1271 classifier_init(&ofproto->facets);
1272 ofproto->consistency_rl = LLONG_MIN;
1274 list_init(&ofproto->completions);
1276 ovs_mutex_init(&ofproto->flow_mod_mutex, PTHREAD_MUTEX_NORMAL);
1277 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1278 list_init(&ofproto->flow_mods);
1279 ofproto->n_flow_mods = 0;
1280 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1282 ovs_mutex_init(&ofproto->pin_mutex, PTHREAD_MUTEX_NORMAL);
1283 ovs_mutex_lock(&ofproto->pin_mutex);
1284 list_init(&ofproto->pins);
1285 ofproto->n_pins = 0;
1286 ovs_mutex_unlock(&ofproto->pin_mutex);
1288 ofproto_dpif_unixctl_init();
1290 hmap_init(&ofproto->vlandev_map);
1291 hmap_init(&ofproto->realdev_vid_map);
1293 sset_init(&ofproto->ports);
1294 sset_init(&ofproto->ghost_ports);
1295 sset_init(&ofproto->port_poll_set);
1296 ofproto->port_poll_errno = 0;
1298 SHASH_FOR_EACH_SAFE (node, next, &init_ofp_ports) {
1299 struct iface_hint *iface_hint = node->data;
1301 if (!strcmp(iface_hint->br_name, ofproto->up.name)) {
1302 /* Check if the datapath already has this port. */
1303 if (dpif_port_exists(ofproto->backer->dpif, node->name)) {
1304 sset_add(&ofproto->ports, node->name);
1307 free(iface_hint->br_name);
1308 free(iface_hint->br_type);
1310 shash_delete(&init_ofp_ports, node);
1314 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
1315 hash_string(ofproto->up.name, 0));
1316 memset(&ofproto->stats, 0, sizeof ofproto->stats);
1318 ofproto_init_tables(ofproto_, N_TABLES);
1319 error = add_internal_flows(ofproto);
1320 ofproto->up.tables[TBL_INTERNAL].flags = OFTABLE_HIDDEN | OFTABLE_READONLY;
1323 ofproto->n_missed = 0;
1329 add_internal_flow(struct ofproto_dpif *ofproto, int id,
1330 const struct ofpbuf *ofpacts, struct rule_dpif **rulep)
1332 struct ofputil_flow_mod fm;
1335 match_init_catchall(&fm.match);
1337 match_set_reg(&fm.match, 0, id);
1338 fm.new_cookie = htonll(0);
1339 fm.cookie = htonll(0);
1340 fm.cookie_mask = htonll(0);
1341 fm.modify_cookie = false;
1342 fm.table_id = TBL_INTERNAL;
1343 fm.command = OFPFC_ADD;
1344 fm.idle_timeout = 0;
1345 fm.hard_timeout = 0;
1349 fm.ofpacts = ofpacts->data;
1350 fm.ofpacts_len = ofpacts->size;
1352 error = ofproto_flow_mod(&ofproto->up, &fm);
1354 VLOG_ERR_RL(&rl, "failed to add internal flow %d (%s)",
1355 id, ofperr_to_string(error));
1359 if (rule_dpif_lookup_in_table(ofproto, &fm.match.flow, NULL, TBL_INTERNAL,
1361 ovs_rwlock_unlock(&(*rulep)->up.evict);
1370 add_internal_flows(struct ofproto_dpif *ofproto)
1372 struct ofpact_controller *controller;
1373 uint64_t ofpacts_stub[128 / 8];
1374 struct ofpbuf ofpacts;
1378 ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
1381 controller = ofpact_put_CONTROLLER(&ofpacts);
1382 controller->max_len = UINT16_MAX;
1383 controller->controller_id = 0;
1384 controller->reason = OFPR_NO_MATCH;
1385 ofpact_pad(&ofpacts);
1387 error = add_internal_flow(ofproto, id++, &ofpacts, &ofproto->miss_rule);
1392 ofpbuf_clear(&ofpacts);
1393 error = add_internal_flow(ofproto, id++, &ofpacts,
1394 &ofproto->no_packet_in_rule);
1399 error = add_internal_flow(ofproto, id++, &ofpacts,
1400 &ofproto->drop_frags_rule);
1405 complete_operations(struct ofproto_dpif *ofproto)
1407 struct dpif_completion *c, *next;
1409 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
1410 ofoperation_complete(c->op, 0);
1411 list_remove(&c->list_node);
1417 destruct(struct ofproto *ofproto_)
1419 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1420 struct rule_dpif *rule, *next_rule;
1421 struct ofputil_flow_mod *pin, *next_pin;
1422 struct ofputil_flow_mod *fm, *next_fm;
1423 struct oftable *table;
1425 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1426 ovs_rwlock_wrlock(&xlate_rwlock);
1427 xlate_remove_ofproto(ofproto);
1428 ovs_rwlock_unlock(&xlate_rwlock);
1430 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
1431 complete_operations(ofproto);
1433 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
1434 struct cls_cursor cursor;
1436 ovs_rwlock_wrlock(&table->cls.rwlock);
1437 cls_cursor_init(&cursor, &table->cls, NULL);
1438 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
1439 ofproto_rule_destroy(&ofproto->up, &table->cls, &rule->up);
1441 ovs_rwlock_unlock(&table->cls.rwlock);
1444 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1445 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &ofproto->flow_mods) {
1446 list_remove(&fm->list_node);
1447 ofproto->n_flow_mods--;
1451 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1452 ovs_mutex_destroy(&ofproto->flow_mod_mutex);
1454 ovs_mutex_lock(&ofproto->pin_mutex);
1455 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &ofproto->pins) {
1456 list_remove(&pin->list_node);
1461 ovs_mutex_unlock(&ofproto->pin_mutex);
1462 ovs_mutex_destroy(&ofproto->pin_mutex);
1464 mbridge_unref(ofproto->mbridge);
1466 netflow_destroy(ofproto->netflow);
1467 dpif_sflow_unref(ofproto->sflow);
1468 hmap_destroy(&ofproto->bundles);
1469 mac_learning_unref(ofproto->ml);
1471 classifier_destroy(&ofproto->facets);
1473 hmap_destroy(&ofproto->vlandev_map);
1474 hmap_destroy(&ofproto->realdev_vid_map);
1476 sset_destroy(&ofproto->ports);
1477 sset_destroy(&ofproto->ghost_ports);
1478 sset_destroy(&ofproto->port_poll_set);
1480 ovs_mutex_destroy(&ofproto->vsp_mutex);
1482 close_dpif_backer(ofproto->backer);
1486 run_fast(struct ofproto *ofproto_)
1488 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1489 struct ofputil_packet_in *pin, *next_pin;
1490 struct ofputil_flow_mod *fm, *next_fm;
1491 struct list flow_mods, pins;
1492 struct ofport_dpif *ofport;
1494 /* Do not perform any periodic activity required by 'ofproto' while
1495 * waiting for flow restore to complete. */
1496 if (ofproto_get_flow_restore_wait()) {
1500 ovs_mutex_lock(&ofproto->flow_mod_mutex);
1501 if (ofproto->n_flow_mods) {
1502 flow_mods = ofproto->flow_mods;
1503 list_moved(&flow_mods);
1504 list_init(&ofproto->flow_mods);
1505 ofproto->n_flow_mods = 0;
1507 list_init(&flow_mods);
1509 ovs_mutex_unlock(&ofproto->flow_mod_mutex);
1511 LIST_FOR_EACH_SAFE (fm, next_fm, list_node, &flow_mods) {
1512 int error = ofproto_flow_mod(&ofproto->up, fm);
1513 if (error && !VLOG_DROP_WARN(&rl)) {
1514 VLOG_WARN("learning action failed to modify flow table (%s)",
1515 ofperr_get_name(error));
1518 list_remove(&fm->list_node);
1523 ovs_mutex_lock(&ofproto->pin_mutex);
1524 if (ofproto->n_pins) {
1525 pins = ofproto->pins;
1527 list_init(&ofproto->pins);
1528 ofproto->n_pins = 0;
1532 ovs_mutex_unlock(&ofproto->pin_mutex);
1534 LIST_FOR_EACH_SAFE (pin, next_pin, list_node, &pins) {
1535 connmgr_send_packet_in(ofproto->up.connmgr, pin);
1536 list_remove(&pin->list_node);
1537 free(CONST_CAST(void *, pin->packet));
1541 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1542 port_run_fast(ofport);
1549 run(struct ofproto *ofproto_)
1551 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1552 struct ofport_dpif *ofport;
1553 struct ofbundle *bundle;
1557 complete_operations(ofproto);
1560 if (mbridge_need_revalidate(ofproto->mbridge)) {
1561 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1562 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1563 mac_learning_flush(ofproto->ml);
1564 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1567 /* Do not perform any periodic activity below required by 'ofproto' while
1568 * waiting for flow restore to complete. */
1569 if (ofproto_get_flow_restore_wait()) {
1573 error = run_fast(ofproto_);
1578 if (ofproto->netflow) {
1579 if (netflow_run(ofproto->netflow)) {
1580 send_netflow_active_timeouts(ofproto);
1583 if (ofproto->sflow) {
1584 dpif_sflow_run(ofproto->sflow);
1587 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1590 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1595 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
1596 if (mac_learning_run(ofproto->ml)) {
1597 ofproto->backer->need_revalidate = REV_MAC_LEARNING;
1599 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1601 /* Check the consistency of a random facet, to aid debugging. */
1602 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1603 if (time_msec() >= ofproto->consistency_rl
1604 && !classifier_is_empty(&ofproto->facets)
1605 && !ofproto->backer->need_revalidate) {
1606 struct cls_table *table;
1607 struct cls_rule *cr;
1608 struct facet *facet;
1610 ofproto->consistency_rl = time_msec() + 250;
1612 table = CONTAINER_OF(hmap_random_node(&ofproto->facets.tables),
1613 struct cls_table, hmap_node);
1614 cr = CONTAINER_OF(hmap_random_node(&table->rules), struct cls_rule,
1616 facet = CONTAINER_OF(cr, struct facet, cr);
1618 if (!facet_check_consistency(facet)) {
1619 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
1622 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1628 wait(struct ofproto *ofproto_)
1630 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1631 struct ofport_dpif *ofport;
1632 struct ofbundle *bundle;
1634 if (!clogged && !list_is_empty(&ofproto->completions)) {
1635 poll_immediate_wake();
1638 if (ofproto_get_flow_restore_wait()) {
1642 if (ofproto->sflow) {
1643 dpif_sflow_wait(ofproto->sflow);
1645 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1648 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
1649 bundle_wait(bundle);
1651 if (ofproto->netflow) {
1652 netflow_wait(ofproto->netflow);
1654 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
1655 mac_learning_wait(ofproto->ml);
1656 ovs_rwlock_unlock(&ofproto->ml->rwlock);
1658 if (ofproto->backer->need_revalidate) {
1659 /* Shouldn't happen, but if it does just go around again. */
1660 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
1661 poll_immediate_wake();
1666 get_memory_usage(const struct ofproto *ofproto_, struct simap *usage)
1668 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1669 struct cls_cursor cursor;
1670 size_t n_subfacets = 0;
1671 struct facet *facet;
1673 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1674 simap_increase(usage, "facets", classifier_count(&ofproto->facets));
1675 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1677 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
1678 cls_cursor_init(&cursor, &ofproto->facets, NULL);
1679 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
1680 n_subfacets += list_size(&facet->subfacets);
1682 ovs_rwlock_unlock(&ofproto->facets.rwlock);
1683 simap_increase(usage, "subfacets", n_subfacets);
1687 flush(struct ofproto *ofproto_)
1689 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1690 struct subfacet *subfacet, *next_subfacet;
1691 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
1695 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
1696 &ofproto->backer->subfacets) {
1697 if (subfacet->facet->ofproto != ofproto) {
1701 if (subfacet->path != SF_NOT_INSTALLED) {
1702 batch[n_batch++] = subfacet;
1703 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
1704 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1708 subfacet_destroy(subfacet);
1713 subfacet_destroy_batch(ofproto->backer, batch, n_batch);
1718 get_features(struct ofproto *ofproto_ OVS_UNUSED,
1719 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
1721 *arp_match_ip = true;
1722 *actions = (OFPUTIL_A_OUTPUT |
1723 OFPUTIL_A_SET_VLAN_VID |
1724 OFPUTIL_A_SET_VLAN_PCP |
1725 OFPUTIL_A_STRIP_VLAN |
1726 OFPUTIL_A_SET_DL_SRC |
1727 OFPUTIL_A_SET_DL_DST |
1728 OFPUTIL_A_SET_NW_SRC |
1729 OFPUTIL_A_SET_NW_DST |
1730 OFPUTIL_A_SET_NW_TOS |
1731 OFPUTIL_A_SET_TP_SRC |
1732 OFPUTIL_A_SET_TP_DST |
1737 get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
1739 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1740 struct dpif_dp_stats s;
1741 uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
1744 strcpy(ots->name, "classifier");
1746 dpif_get_dp_stats(ofproto->backer->dpif, &s);
1747 rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes);
1748 rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in, &n_bytes);
1749 rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags, &n_bytes);
1751 n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
1752 ots->lookup_count = htonll(n_lookup);
1753 ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
1756 static struct ofport *
1759 struct ofport_dpif *port = xmalloc(sizeof *port);
1764 port_dealloc(struct ofport *port_)
1766 struct ofport_dpif *port = ofport_dpif_cast(port_);
1771 port_construct(struct ofport *port_)
1773 struct ofport_dpif *port = ofport_dpif_cast(port_);
1774 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1775 const struct netdev *netdev = port->up.netdev;
1776 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1777 struct dpif_port dpif_port;
1780 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1781 port->bundle = NULL;
1784 port->may_enable = true;
1785 port->stp_port = NULL;
1786 port->stp_state = STP_DISABLED;
1787 port->is_tunnel = false;
1791 port->realdev_ofp_port = 0;
1792 port->vlandev_vid = 0;
1793 port->carrier_seq = netdev_get_carrier_resets(netdev);
1795 if (netdev_vport_is_patch(netdev)) {
1796 /* By bailing out here, we don't submit the port to the sFlow module
1797 * to be considered for counter polling export. This is correct
1798 * because the patch port represents an interface that sFlow considers
1799 * to be "internal" to the switch as a whole, and therefore not an
1800 * candidate for counter polling. */
1801 port->odp_port = ODPP_NONE;
1802 ofport_update_peer(port);
1806 error = dpif_port_query_by_name(ofproto->backer->dpif,
1807 netdev_vport_get_dpif_port(netdev, namebuf,
1814 port->odp_port = dpif_port.port_no;
1816 if (netdev_get_tunnel_config(netdev)) {
1817 tnl_port_add(port, port->up.netdev, port->odp_port);
1818 port->is_tunnel = true;
1820 /* Sanity-check that a mapping doesn't already exist. This
1821 * shouldn't happen for non-tunnel ports. */
1822 if (odp_port_to_ofp_port(ofproto, port->odp_port) != OFPP_NONE) {
1823 VLOG_ERR("port %s already has an OpenFlow port number",
1825 dpif_port_destroy(&dpif_port);
1829 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1830 hmap_insert(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node,
1831 hash_odp_port(port->odp_port));
1832 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1834 dpif_port_destroy(&dpif_port);
1836 if (ofproto->sflow) {
1837 dpif_sflow_add_port(ofproto->sflow, port_, port->odp_port);
1844 port_destruct(struct ofport *port_)
1846 struct ofport_dpif *port = ofport_dpif_cast(port_);
1847 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1848 const char *devname = netdev_get_name(port->up.netdev);
1849 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1850 const char *dp_port_name;
1852 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1853 ovs_rwlock_wrlock(&xlate_rwlock);
1854 xlate_ofport_remove(port);
1855 ovs_rwlock_unlock(&xlate_rwlock);
1857 dp_port_name = netdev_vport_get_dpif_port(port->up.netdev, namebuf,
1859 if (dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
1860 /* The underlying device is still there, so delete it. This
1861 * happens when the ofproto is being destroyed, since the caller
1862 * assumes that removal of attached ports will happen as part of
1864 if (!port->is_tunnel) {
1865 dpif_port_del(ofproto->backer->dpif, port->odp_port);
1870 port->peer->peer = NULL;
1874 if (port->odp_port != ODPP_NONE && !port->is_tunnel) {
1875 ovs_rwlock_wrlock(&ofproto->backer->odp_to_ofport_lock);
1876 hmap_remove(&ofproto->backer->odp_to_ofport_map, &port->odp_port_node);
1877 ovs_rwlock_unlock(&ofproto->backer->odp_to_ofport_lock);
1881 sset_find_and_delete(&ofproto->ports, devname);
1882 sset_find_and_delete(&ofproto->ghost_ports, devname);
1883 bundle_remove(port_);
1884 set_cfm(port_, NULL);
1885 set_bfd(port_, NULL);
1886 if (ofproto->sflow) {
1887 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1894 port_modified(struct ofport *port_)
1896 struct ofport_dpif *port = ofport_dpif_cast(port_);
1898 if (port->bundle && port->bundle->bond) {
1899 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1903 cfm_set_netdev(port->cfm, port->up.netdev);
1906 if (port->is_tunnel && tnl_port_reconfigure(port, port->up.netdev,
1908 ofproto_dpif_cast(port->up.ofproto)->backer->need_revalidate =
1912 ofport_update_peer(port);
1916 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1918 struct ofport_dpif *port = ofport_dpif_cast(port_);
1919 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1920 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1922 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1923 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD |
1924 OFPUTIL_PC_NO_PACKET_IN)) {
1925 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1927 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1928 bundle_update(port->bundle);
1934 set_sflow(struct ofproto *ofproto_,
1935 const struct ofproto_sflow_options *sflow_options)
1937 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1938 struct dpif_sflow *ds = ofproto->sflow;
1940 if (sflow_options) {
1942 struct ofport_dpif *ofport;
1944 ds = ofproto->sflow = dpif_sflow_create();
1945 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1946 dpif_sflow_add_port(ds, &ofport->up, ofport->odp_port);
1948 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1950 dpif_sflow_set_options(ds, sflow_options);
1953 dpif_sflow_unref(ds);
1954 ofproto->backer->need_revalidate = REV_RECONFIGURE;
1955 ofproto->sflow = NULL;
1963 struct ofproto *ofproto_,
1964 const struct ofproto_ipfix_bridge_exporter_options *bridge_exporter_options,
1965 const struct ofproto_ipfix_flow_exporter_options *flow_exporters_options,
1966 size_t n_flow_exporters_options)
1968 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1969 struct dpif_ipfix *di = ofproto->ipfix;
1971 if (bridge_exporter_options || flow_exporters_options) {
1973 di = ofproto->ipfix = dpif_ipfix_create();
1975 dpif_ipfix_set_options(
1976 di, bridge_exporter_options, flow_exporters_options,
1977 n_flow_exporters_options);
1980 dpif_ipfix_unref(di);
1981 ofproto->ipfix = NULL;
1988 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1990 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1997 struct ofproto_dpif *ofproto;
1999 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2000 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2001 ofport->cfm = cfm_create(ofport->up.netdev);
2004 if (cfm_configure(ofport->cfm, s)) {
2010 cfm_unref(ofport->cfm);
2016 get_cfm_status(const struct ofport *ofport_,
2017 struct ofproto_cfm_status *status)
2019 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2022 status->faults = cfm_get_fault(ofport->cfm);
2023 status->remote_opstate = cfm_get_opup(ofport->cfm);
2024 status->health = cfm_get_health(ofport->cfm);
2025 cfm_get_remote_mpids(ofport->cfm, &status->rmps, &status->n_rmps);
2033 set_bfd(struct ofport *ofport_, const struct smap *cfg)
2035 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
2036 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2040 ofport->bfd = bfd_configure(old, netdev_get_name(ofport->up.netdev), cfg);
2041 if (ofport->bfd != old) {
2042 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2049 get_bfd_status(struct ofport *ofport_, struct smap *smap)
2051 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2054 bfd_get_status(ofport->bfd, smap);
2061 /* Spanning Tree. */
2064 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
2066 struct ofproto_dpif *ofproto = ofproto_;
2067 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
2068 struct ofport_dpif *ofport;
2070 ofport = stp_port_get_aux(sp);
2072 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
2073 ofproto->up.name, port_num);
2075 struct eth_header *eth = pkt->l2;
2077 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
2078 if (eth_addr_is_zero(eth->eth_src)) {
2079 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
2080 "with unknown MAC", ofproto->up.name, port_num);
2082 send_packet(ofport, pkt);
2088 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
2090 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
2092 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2094 /* Only revalidate flows if the configuration changed. */
2095 if (!s != !ofproto->stp) {
2096 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2100 if (!ofproto->stp) {
2101 ofproto->stp = stp_create(ofproto_->name, s->system_id,
2102 send_bpdu_cb, ofproto);
2103 ofproto->stp_last_tick = time_msec();
2106 stp_set_bridge_id(ofproto->stp, s->system_id);
2107 stp_set_bridge_priority(ofproto->stp, s->priority);
2108 stp_set_hello_time(ofproto->stp, s->hello_time);
2109 stp_set_max_age(ofproto->stp, s->max_age);
2110 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
2112 struct ofport *ofport;
2114 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
2115 set_stp_port(ofport, NULL);
2118 stp_unref(ofproto->stp);
2119 ofproto->stp = NULL;
2126 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
2128 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2132 s->bridge_id = stp_get_bridge_id(ofproto->stp);
2133 s->designated_root = stp_get_designated_root(ofproto->stp);
2134 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
2143 update_stp_port_state(struct ofport_dpif *ofport)
2145 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2146 enum stp_state state;
2148 /* Figure out new state. */
2149 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
2153 if (ofport->stp_state != state) {
2154 enum ofputil_port_state of_state;
2157 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
2158 netdev_get_name(ofport->up.netdev),
2159 stp_state_name(ofport->stp_state),
2160 stp_state_name(state));
2161 if (stp_learn_in_state(ofport->stp_state)
2162 != stp_learn_in_state(state)) {
2163 /* xxx Learning action flows should also be flushed. */
2164 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2165 mac_learning_flush(ofproto->ml);
2166 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2168 fwd_change = stp_forward_in_state(ofport->stp_state)
2169 != stp_forward_in_state(state);
2171 ofproto->backer->need_revalidate = REV_STP;
2172 ofport->stp_state = state;
2173 ofport->stp_state_entered = time_msec();
2175 if (fwd_change && ofport->bundle) {
2176 bundle_update(ofport->bundle);
2179 /* Update the STP state bits in the OpenFlow port description. */
2180 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
2181 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
2182 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
2183 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
2184 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
2186 ofproto_port_set_state(&ofport->up, of_state);
2190 /* Configures STP on 'ofport_' using the settings defined in 's'. The
2191 * caller is responsible for assigning STP port numbers and ensuring
2192 * there are no duplicates. */
2194 set_stp_port(struct ofport *ofport_,
2195 const struct ofproto_port_stp_settings *s)
2197 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2198 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2199 struct stp_port *sp = ofport->stp_port;
2201 if (!s || !s->enable) {
2203 ofport->stp_port = NULL;
2204 stp_port_disable(sp);
2205 update_stp_port_state(ofport);
2208 } else if (sp && stp_port_no(sp) != s->port_num
2209 && ofport == stp_port_get_aux(sp)) {
2210 /* The port-id changed, so disable the old one if it's not
2211 * already in use by another port. */
2212 stp_port_disable(sp);
2215 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
2216 stp_port_enable(sp);
2218 stp_port_set_aux(sp, ofport);
2219 stp_port_set_priority(sp, s->priority);
2220 stp_port_set_path_cost(sp, s->path_cost);
2222 update_stp_port_state(ofport);
2228 get_stp_port_status(struct ofport *ofport_,
2229 struct ofproto_port_stp_status *s)
2231 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2232 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2233 struct stp_port *sp = ofport->stp_port;
2235 if (!ofproto->stp || !sp) {
2241 s->port_id = stp_port_get_id(sp);
2242 s->state = stp_port_get_state(sp);
2243 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
2244 s->role = stp_port_get_role(sp);
2245 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
2251 stp_run(struct ofproto_dpif *ofproto)
2254 long long int now = time_msec();
2255 long long int elapsed = now - ofproto->stp_last_tick;
2256 struct stp_port *sp;
2259 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
2260 ofproto->stp_last_tick = now;
2262 while (stp_get_changed_port(ofproto->stp, &sp)) {
2263 struct ofport_dpif *ofport = stp_port_get_aux(sp);
2266 update_stp_port_state(ofport);
2270 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
2271 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2272 mac_learning_flush(ofproto->ml);
2273 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2279 stp_wait(struct ofproto_dpif *ofproto)
2282 poll_timer_wait(1000);
2287 set_queues(struct ofport *ofport_, const struct ofproto_port_queue *qdscp,
2290 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2291 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2293 if (ofport->n_qdscp != n_qdscp
2294 || (n_qdscp && memcmp(ofport->qdscp, qdscp,
2295 n_qdscp * sizeof *qdscp))) {
2296 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2297 free(ofport->qdscp);
2298 ofport->qdscp = n_qdscp
2299 ? xmemdup(qdscp, n_qdscp * sizeof *qdscp)
2301 ofport->n_qdscp = n_qdscp;
2309 /* Expires all MAC learning entries associated with 'bundle' and forces its
2310 * ofproto to revalidate every flow.
2312 * Normally MAC learning entries are removed only from the ofproto associated
2313 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
2314 * are removed from every ofproto. When patch ports and SLB bonds are in use
2315 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
2316 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
2317 * with the host from which it migrated. */
2319 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
2321 struct ofproto_dpif *ofproto = bundle->ofproto;
2322 struct mac_learning *ml = ofproto->ml;
2323 struct mac_entry *mac, *next_mac;
2325 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2326 ovs_rwlock_wrlock(&ml->rwlock);
2327 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
2328 if (mac->port.p == bundle) {
2330 struct ofproto_dpif *o;
2332 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2334 struct mac_entry *e;
2336 ovs_rwlock_wrlock(&o->ml->rwlock);
2337 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan);
2339 mac_learning_expire(o->ml, e);
2341 ovs_rwlock_unlock(&o->ml->rwlock);
2346 mac_learning_expire(ml, mac);
2349 ovs_rwlock_unlock(&ml->rwlock);
2352 static struct ofbundle *
2353 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
2355 struct ofbundle *bundle;
2357 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
2358 &ofproto->bundles) {
2359 if (bundle->aux == aux) {
2367 bundle_update(struct ofbundle *bundle)
2369 struct ofport_dpif *port;
2371 bundle->floodable = true;
2372 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2373 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2374 || !stp_forward_in_state(port->stp_state)) {
2375 bundle->floodable = false;
2382 bundle_del_port(struct ofport_dpif *port)
2384 struct ofbundle *bundle = port->bundle;
2386 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2388 list_remove(&port->bundle_node);
2389 port->bundle = NULL;
2392 lacp_slave_unregister(bundle->lacp, port);
2395 bond_slave_unregister(bundle->bond, port);
2398 bundle_update(bundle);
2402 bundle_add_port(struct ofbundle *bundle, ofp_port_t ofp_port,
2403 struct lacp_slave_settings *lacp)
2405 struct ofport_dpif *port;
2407 port = get_ofp_port(bundle->ofproto, ofp_port);
2412 if (port->bundle != bundle) {
2413 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2415 bundle_remove(&port->up);
2418 port->bundle = bundle;
2419 list_push_back(&bundle->ports, &port->bundle_node);
2420 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
2421 || !stp_forward_in_state(port->stp_state)) {
2422 bundle->floodable = false;
2426 bundle->ofproto->backer->need_revalidate = REV_RECONFIGURE;
2427 lacp_slave_register(bundle->lacp, port, lacp);
2434 bundle_destroy(struct ofbundle *bundle)
2436 struct ofproto_dpif *ofproto;
2437 struct ofport_dpif *port, *next_port;
2443 ofproto = bundle->ofproto;
2444 mbridge_unregister_bundle(ofproto->mbridge, bundle->aux);
2446 ovs_rwlock_wrlock(&xlate_rwlock);
2447 xlate_bundle_remove(bundle);
2448 ovs_rwlock_unlock(&xlate_rwlock);
2450 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2451 bundle_del_port(port);
2454 bundle_flush_macs(bundle, true);
2455 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
2457 free(bundle->trunks);
2458 lacp_unref(bundle->lacp);
2459 bond_unref(bundle->bond);
2464 bundle_set(struct ofproto *ofproto_, void *aux,
2465 const struct ofproto_bundle_settings *s)
2467 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2468 bool need_flush = false;
2469 struct ofport_dpif *port;
2470 struct ofbundle *bundle;
2471 unsigned long *trunks;
2477 bundle_destroy(bundle_lookup(ofproto, aux));
2481 ovs_assert(s->n_slaves == 1 || s->bond != NULL);
2482 ovs_assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
2484 bundle = bundle_lookup(ofproto, aux);
2486 bundle = xmalloc(sizeof *bundle);
2488 bundle->ofproto = ofproto;
2489 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
2490 hash_pointer(aux, 0));
2492 bundle->name = NULL;
2494 list_init(&bundle->ports);
2495 bundle->vlan_mode = PORT_VLAN_TRUNK;
2497 bundle->trunks = NULL;
2498 bundle->use_priority_tags = s->use_priority_tags;
2499 bundle->lacp = NULL;
2500 bundle->bond = NULL;
2502 bundle->floodable = true;
2503 mbridge_register_bundle(ofproto->mbridge, bundle);
2506 if (!bundle->name || strcmp(s->name, bundle->name)) {
2508 bundle->name = xstrdup(s->name);
2513 if (!bundle->lacp) {
2514 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2515 bundle->lacp = lacp_create();
2517 lacp_configure(bundle->lacp, s->lacp);
2519 lacp_unref(bundle->lacp);
2520 bundle->lacp = NULL;
2523 /* Update set of ports. */
2525 for (i = 0; i < s->n_slaves; i++) {
2526 if (!bundle_add_port(bundle, s->slaves[i],
2527 s->lacp ? &s->lacp_slaves[i] : NULL)) {
2531 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
2532 struct ofport_dpif *next_port;
2534 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
2535 for (i = 0; i < s->n_slaves; i++) {
2536 if (s->slaves[i] == port->up.ofp_port) {
2541 bundle_del_port(port);
2545 ovs_assert(list_size(&bundle->ports) <= s->n_slaves);
2547 if (list_is_empty(&bundle->ports)) {
2548 bundle_destroy(bundle);
2552 /* Set VLAN tagging mode */
2553 if (s->vlan_mode != bundle->vlan_mode
2554 || s->use_priority_tags != bundle->use_priority_tags) {
2555 bundle->vlan_mode = s->vlan_mode;
2556 bundle->use_priority_tags = s->use_priority_tags;
2561 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
2562 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
2564 if (vlan != bundle->vlan) {
2565 bundle->vlan = vlan;
2569 /* Get trunked VLANs. */
2570 switch (s->vlan_mode) {
2571 case PORT_VLAN_ACCESS:
2575 case PORT_VLAN_TRUNK:
2576 trunks = CONST_CAST(unsigned long *, s->trunks);
2579 case PORT_VLAN_NATIVE_UNTAGGED:
2580 case PORT_VLAN_NATIVE_TAGGED:
2581 if (vlan != 0 && (!s->trunks
2582 || !bitmap_is_set(s->trunks, vlan)
2583 || bitmap_is_set(s->trunks, 0))) {
2584 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
2586 trunks = bitmap_clone(s->trunks, 4096);
2588 trunks = bitmap_allocate1(4096);
2590 bitmap_set1(trunks, vlan);
2591 bitmap_set0(trunks, 0);
2593 trunks = CONST_CAST(unsigned long *, s->trunks);
2600 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
2601 free(bundle->trunks);
2602 if (trunks == s->trunks) {
2603 bundle->trunks = vlan_bitmap_clone(trunks);
2605 bundle->trunks = trunks;
2610 if (trunks != s->trunks) {
2615 if (!list_is_short(&bundle->ports)) {
2616 bundle->ofproto->has_bonded_bundles = true;
2618 if (bond_reconfigure(bundle->bond, s->bond)) {
2619 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2622 bundle->bond = bond_create(s->bond);
2623 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2626 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2627 bond_slave_register(bundle->bond, port, port->up.netdev);
2630 bond_unref(bundle->bond);
2631 bundle->bond = NULL;
2634 /* If we changed something that would affect MAC learning, un-learn
2635 * everything on this port and force flow revalidation. */
2637 bundle_flush_macs(bundle, false);
2644 bundle_remove(struct ofport *port_)
2646 struct ofport_dpif *port = ofport_dpif_cast(port_);
2647 struct ofbundle *bundle = port->bundle;
2650 bundle_del_port(port);
2651 if (list_is_empty(&bundle->ports)) {
2652 bundle_destroy(bundle);
2653 } else if (list_is_short(&bundle->ports)) {
2654 bond_unref(bundle->bond);
2655 bundle->bond = NULL;
2661 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
2663 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
2664 struct ofport_dpif *port = port_;
2665 uint8_t ea[ETH_ADDR_LEN];
2668 error = netdev_get_etheraddr(port->up.netdev, ea);
2670 struct ofpbuf packet;
2673 ofpbuf_init(&packet, 0);
2674 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
2676 memcpy(packet_pdu, pdu, pdu_size);
2678 send_packet(port, &packet);
2679 ofpbuf_uninit(&packet);
2681 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
2682 "%s (%s)", port->bundle->name,
2683 netdev_get_name(port->up.netdev), ovs_strerror(error));
2688 bundle_send_learning_packets(struct ofbundle *bundle)
2690 struct ofproto_dpif *ofproto = bundle->ofproto;
2691 int error, n_packets, n_errors;
2692 struct mac_entry *e;
2694 error = n_packets = n_errors = 0;
2695 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
2696 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
2697 if (e->port.p != bundle) {
2698 struct ofpbuf *learning_packet;
2699 struct ofport_dpif *port;
2703 /* The assignment to "port" is unnecessary but makes "grep"ing for
2704 * struct ofport_dpif more effective. */
2705 learning_packet = bond_compose_learning_packet(bundle->bond,
2709 ret = send_packet(port, learning_packet);
2710 ofpbuf_delete(learning_packet);
2718 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2721 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2722 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2723 "packets, last error was: %s",
2724 bundle->name, n_errors, n_packets, ovs_strerror(error));
2726 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2727 bundle->name, n_packets);
2732 bundle_run(struct ofbundle *bundle)
2735 lacp_run(bundle->lacp, send_pdu_cb);
2738 struct ofport_dpif *port;
2740 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
2741 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
2744 if (bond_run(bundle->bond, lacp_status(bundle->lacp))) {
2745 bundle->ofproto->backer->need_revalidate = REV_BOND;
2748 if (bond_should_send_learning_packets(bundle->bond)) {
2749 bundle_send_learning_packets(bundle);
2755 bundle_wait(struct ofbundle *bundle)
2758 lacp_wait(bundle->lacp);
2761 bond_wait(bundle->bond);
2768 mirror_set__(struct ofproto *ofproto_, void *aux,
2769 const struct ofproto_mirror_settings *s)
2771 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2772 struct ofbundle **srcs, **dsts;
2777 mirror_destroy(ofproto->mbridge, aux);
2781 srcs = xmalloc(s->n_srcs * sizeof *srcs);
2782 dsts = xmalloc(s->n_dsts * sizeof *dsts);
2784 for (i = 0; i < s->n_srcs; i++) {
2785 srcs[i] = bundle_lookup(ofproto, s->srcs[i]);
2788 for (i = 0; i < s->n_dsts; i++) {
2789 dsts[i] = bundle_lookup(ofproto, s->dsts[i]);
2792 error = mirror_set(ofproto->mbridge, aux, s->name, srcs, s->n_srcs, dsts,
2793 s->n_dsts, s->src_vlans,
2794 bundle_lookup(ofproto, s->out_bundle), s->out_vlan);
2801 mirror_get_stats__(struct ofproto *ofproto, void *aux,
2802 uint64_t *packets, uint64_t *bytes)
2805 return mirror_get_stats(ofproto_dpif_cast(ofproto)->mbridge, aux, packets,
2810 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2812 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2813 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2814 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2815 mac_learning_flush(ofproto->ml);
2817 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2822 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2824 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2825 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2826 return bundle && mirror_bundle_out(ofproto->mbridge, bundle) != 0;
2830 forward_bpdu_changed(struct ofproto *ofproto_)
2832 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2833 ofproto->backer->need_revalidate = REV_RECONFIGURE;
2837 set_mac_table_config(struct ofproto *ofproto_, unsigned int idle_time,
2840 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2841 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
2842 mac_learning_set_idle_time(ofproto->ml, idle_time);
2843 mac_learning_set_max_entries(ofproto->ml, max_entries);
2844 ovs_rwlock_unlock(&ofproto->ml->rwlock);
2849 static struct ofport_dpif *
2850 get_ofp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
2852 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2853 return ofport ? ofport_dpif_cast(ofport) : NULL;
2856 static struct ofport_dpif *
2857 get_odp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
2859 struct ofport_dpif *port = odp_port_to_ofport(ofproto->backer, odp_port);
2860 return port && &ofproto->up == port->up.ofproto ? port : NULL;
2864 ofproto_port_from_dpif_port(struct ofproto_dpif *ofproto,
2865 struct ofproto_port *ofproto_port,
2866 struct dpif_port *dpif_port)
2868 ofproto_port->name = dpif_port->name;
2869 ofproto_port->type = dpif_port->type;
2870 ofproto_port->ofp_port = odp_port_to_ofp_port(ofproto, dpif_port->port_no);
2874 ofport_update_peer(struct ofport_dpif *ofport)
2876 const struct ofproto_dpif *ofproto;
2877 struct dpif_backer *backer;
2880 if (!netdev_vport_is_patch(ofport->up.netdev)) {
2884 backer = ofproto_dpif_cast(ofport->up.ofproto)->backer;
2885 backer->need_revalidate = REV_RECONFIGURE;
2888 ofport->peer->peer = NULL;
2889 ofport->peer = NULL;
2892 peer_name = netdev_vport_patch_peer(ofport->up.netdev);
2897 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
2898 struct ofport *peer_ofport;
2899 struct ofport_dpif *peer;
2902 if (ofproto->backer != backer) {
2906 peer_ofport = shash_find_data(&ofproto->up.port_by_name, peer_name);
2911 peer = ofport_dpif_cast(peer_ofport);
2912 peer_peer = netdev_vport_patch_peer(peer->up.netdev);
2913 if (peer_peer && !strcmp(netdev_get_name(ofport->up.netdev),
2915 ofport->peer = peer;
2916 ofport->peer->peer = ofport;
2926 port_run_fast(struct ofport_dpif *ofport)
2928 if (ofport->cfm && cfm_should_send_ccm(ofport->cfm)) {
2929 struct ofpbuf packet;
2931 ofpbuf_init(&packet, 0);
2932 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2933 send_packet(ofport, &packet);
2934 ofpbuf_uninit(&packet);
2937 if (ofport->bfd && bfd_should_send_packet(ofport->bfd)) {
2938 struct ofpbuf packet;
2940 ofpbuf_init(&packet, 0);
2941 bfd_put_packet(ofport->bfd, &packet, ofport->up.pp.hw_addr);
2942 send_packet(ofport, &packet);
2943 ofpbuf_uninit(&packet);
2948 port_run(struct ofport_dpif *ofport)
2950 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2951 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2952 bool enable = netdev_get_carrier(ofport->up.netdev);
2954 ofport->carrier_seq = carrier_seq;
2956 port_run_fast(ofport);
2959 int cfm_opup = cfm_get_opup(ofport->cfm);
2961 cfm_run(ofport->cfm);
2962 enable = enable && !cfm_get_fault(ofport->cfm);
2964 if (cfm_opup >= 0) {
2965 enable = enable && cfm_opup;
2970 bfd_run(ofport->bfd);
2971 enable = enable && bfd_forwarding(ofport->bfd);
2974 if (ofport->bundle) {
2975 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2976 if (carrier_changed) {
2977 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
2981 if (ofport->may_enable != enable) {
2982 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2983 ofproto->backer->need_revalidate = REV_PORT_TOGGLED;
2986 ofport->may_enable = enable;
2990 port_wait(struct ofport_dpif *ofport)
2993 cfm_wait(ofport->cfm);
2997 bfd_wait(ofport->bfd);
3002 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
3003 struct ofproto_port *ofproto_port)
3005 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3006 struct dpif_port dpif_port;
3009 if (sset_contains(&ofproto->ghost_ports, devname)) {
3010 const char *type = netdev_get_type_from_name(devname);
3012 /* We may be called before ofproto->up.port_by_name is populated with
3013 * the appropriate ofport. For this reason, we must get the name and
3014 * type from the netdev layer directly. */
3016 const struct ofport *ofport;
3018 ofport = shash_find_data(&ofproto->up.port_by_name, devname);
3019 ofproto_port->ofp_port = ofport ? ofport->ofp_port : OFPP_NONE;
3020 ofproto_port->name = xstrdup(devname);
3021 ofproto_port->type = xstrdup(type);
3027 if (!sset_contains(&ofproto->ports, devname)) {
3030 error = dpif_port_query_by_name(ofproto->backer->dpif,
3031 devname, &dpif_port);
3033 ofproto_port_from_dpif_port(ofproto, ofproto_port, &dpif_port);
3039 port_add(struct ofproto *ofproto_, struct netdev *netdev)
3041 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3042 const char *devname = netdev_get_name(netdev);
3043 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
3044 const char *dp_port_name;
3046 if (netdev_vport_is_patch(netdev)) {
3047 sset_add(&ofproto->ghost_ports, netdev_get_name(netdev));
3051 dp_port_name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
3052 if (!dpif_port_exists(ofproto->backer->dpif, dp_port_name)) {
3053 odp_port_t port_no = ODPP_NONE;
3056 error = dpif_port_add(ofproto->backer->dpif, netdev, &port_no);
3060 if (netdev_get_tunnel_config(netdev)) {
3061 simap_put(&ofproto->backer->tnl_backers,
3062 dp_port_name, odp_to_u32(port_no));
3066 if (netdev_get_tunnel_config(netdev)) {
3067 sset_add(&ofproto->ghost_ports, devname);
3069 sset_add(&ofproto->ports, devname);
3075 port_del(struct ofproto *ofproto_, ofp_port_t ofp_port)
3077 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3078 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
3085 sset_find_and_delete(&ofproto->ghost_ports,
3086 netdev_get_name(ofport->up.netdev));
3087 ofproto->backer->need_revalidate = REV_RECONFIGURE;
3088 if (!ofport->is_tunnel) {
3089 error = dpif_port_del(ofproto->backer->dpif, ofport->odp_port);
3091 /* The caller is going to close ofport->up.netdev. If this is a
3092 * bonded port, then the bond is using that netdev, so remove it
3093 * from the bond. The client will need to reconfigure everything
3094 * after deleting ports, so then the slave will get re-added. */
3095 bundle_remove(&ofport->up);
3102 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
3104 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3109 error = netdev_get_stats(ofport->up.netdev, stats);
3111 if (!error && ofport_->ofp_port == OFPP_LOCAL) {
3112 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
3114 /* ofproto->stats.tx_packets represents packets that we created
3115 * internally and sent to some port (e.g. packets sent with
3116 * send_packet()). Account for them as if they had come from
3117 * OFPP_LOCAL and got forwarded. */
3119 if (stats->rx_packets != UINT64_MAX) {
3120 stats->rx_packets += ofproto->stats.tx_packets;
3123 if (stats->rx_bytes != UINT64_MAX) {
3124 stats->rx_bytes += ofproto->stats.tx_bytes;
3127 /* ofproto->stats.rx_packets represents packets that were received on
3128 * some port and we processed internally and dropped (e.g. STP).
3129 * Account for them as if they had been forwarded to OFPP_LOCAL. */
3131 if (stats->tx_packets != UINT64_MAX) {
3132 stats->tx_packets += ofproto->stats.rx_packets;
3135 if (stats->tx_bytes != UINT64_MAX) {
3136 stats->tx_bytes += ofproto->stats.rx_bytes;
3143 struct port_dump_state {
3148 struct ofproto_port port;
3153 port_dump_start(const struct ofproto *ofproto_ OVS_UNUSED, void **statep)
3155 *statep = xzalloc(sizeof(struct port_dump_state));
3160 port_dump_next(const struct ofproto *ofproto_, void *state_,
3161 struct ofproto_port *port)
3163 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3164 struct port_dump_state *state = state_;
3165 const struct sset *sset;
3166 struct sset_node *node;
3168 if (state->has_port) {
3169 ofproto_port_destroy(&state->port);
3170 state->has_port = false;
3172 sset = state->ghost ? &ofproto->ghost_ports : &ofproto->ports;
3173 while ((node = sset_at_position(sset, &state->bucket, &state->offset))) {
3176 error = port_query_by_name(ofproto_, node->name, &state->port);
3178 *port = state->port;
3179 state->has_port = true;
3181 } else if (error != ENODEV) {
3186 if (!state->ghost) {
3187 state->ghost = true;
3190 return port_dump_next(ofproto_, state_, port);
3197 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
3199 struct port_dump_state *state = state_;
3201 if (state->has_port) {
3202 ofproto_port_destroy(&state->port);
3209 port_poll(const struct ofproto *ofproto_, char **devnamep)
3211 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3213 if (ofproto->port_poll_errno) {
3214 int error = ofproto->port_poll_errno;
3215 ofproto->port_poll_errno = 0;
3219 if (sset_is_empty(&ofproto->port_poll_set)) {
3223 *devnamep = sset_pop(&ofproto->port_poll_set);
3228 port_poll_wait(const struct ofproto *ofproto_)
3230 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
3231 dpif_port_poll_wait(ofproto->backer->dpif);
3235 port_is_lacp_current(const struct ofport *ofport_)
3237 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
3238 return (ofport->bundle && ofport->bundle->lacp
3239 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
3243 /* Upcall handling. */
3245 struct flow_miss_op {
3246 struct dpif_op dpif_op;
3248 uint64_t slow_stub[128 / 8]; /* Buffer for compose_slow_path() */
3249 struct xlate_out xout;
3250 bool xout_garbage; /* 'xout' needs to be uninitialized? */
3252 struct ofpbuf mask; /* Flow mask for "put" ops. */
3253 struct odputil_keybuf maskbuf;
3255 /* If this is a "put" op, then a pointer to the subfacet that should
3256 * be marked as uninstalled if the operation fails. */
3257 struct subfacet *subfacet;
3260 /* Figures out whether a flow that missed in 'ofproto', whose details are in
3261 * 'miss' masked by 'wc', is likely to be worth tracking in detail in userspace
3262 * and (usually) installing a datapath flow. The answer is usually "yes" (a
3263 * return value of true). However, for short flows the cost of bookkeeping is
3264 * much higher than the benefits, so when the datapath holds a large number of
3265 * flows we impose some heuristics to decide which flows are likely to be worth
3268 flow_miss_should_make_facet(struct flow_miss *miss)
3270 struct dpif_backer *backer = miss->ofproto->backer;
3273 switch (flow_miss_model) {
3274 case OFPROTO_HANDLE_MISS_AUTO:
3276 case OFPROTO_HANDLE_MISS_WITH_FACETS:
3278 case OFPROTO_HANDLE_MISS_WITHOUT_FACETS:
3282 if (!backer->governor) {
3285 n_subfacets = hmap_count(&backer->subfacets);
3286 if (n_subfacets * 2 <= flow_eviction_threshold) {
3290 backer->governor = governor_create();
3293 hash = flow_hash_in_wildcards(&miss->flow, &miss->xout.wc, 0);
3294 return governor_should_install_flow(backer->governor, hash,
3295 list_size(&miss->packets));
3298 /* Handles 'miss', which matches 'facet'. May add any required datapath
3299 * operations to 'ops', incrementing '*n_ops' for each new op.
3301 * All of the packets in 'miss' are considered to have arrived at time
3302 * 'miss->stats.used'. This is really important only for new facets: if we
3303 * just called time_msec() here, then the new subfacet or its packets could
3304 * look (occasionally) as though it was used some time after the facet was
3305 * used. That can make a one-packet flow look like it has a nonzero duration,
3306 * which looks odd in e.g. NetFlow statistics. */
3308 handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
3309 struct flow_miss_op *ops, size_t *n_ops)
3311 enum subfacet_path want_path;
3312 struct subfacet *subfacet;
3314 facet->packet_count += miss->stats.n_packets;
3315 facet->prev_packet_count += miss->stats.n_packets;
3316 facet->byte_count += miss->stats.n_bytes;
3317 facet->prev_byte_count += miss->stats.n_bytes;
3319 subfacet = subfacet_create(facet, miss);
3320 want_path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
3322 /* Don't install the flow if it's the result of the "userspace"
3323 * action for an already installed facet. This can occur when a
3324 * datapath flow with wildcards has a "userspace" action and flows
3325 * sent to userspace result in a different subfacet, which will then
3326 * be rejected as overlapping by the datapath. */
3327 if (miss->upcall_type == DPIF_UC_ACTION
3328 && !list_is_empty(&facet->subfacets)) {
3332 subfacet = subfacet_create(facet, miss);
3333 if (subfacet->path != want_path) {
3334 struct flow_miss_op *op = &ops[(*n_ops)++];
3335 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
3337 subfacet->path = want_path;
3339 ofpbuf_use_stack(&op->mask, &op->maskbuf, sizeof op->maskbuf);
3340 if (enable_megaflows) {
3341 odp_flow_key_from_mask(&op->mask, &facet->xout.wc.masks,
3342 &miss->flow, UINT32_MAX);
3345 op->xout_garbage = false;
3346 op->dpif_op.type = DPIF_OP_FLOW_PUT;
3347 op->subfacet = subfacet;
3348 put->flags = DPIF_FP_CREATE;
3349 put->key = miss->key;
3350 put->key_len = miss->key_len;
3351 put->mask = op->mask.data;
3352 put->mask_len = op->mask.size;
3354 if (want_path == SF_FAST_PATH) {
3355 put->actions = facet->xout.odp_actions.data;
3356 put->actions_len = facet->xout.odp_actions.size;
3358 compose_slow_path(facet->ofproto, &miss->flow, facet->xout.slow,
3359 op->slow_stub, sizeof op->slow_stub,
3360 &put->actions, &put->actions_len);
3366 /* Handles flow miss 'miss'. May add any required datapath operations
3367 * to 'ops', incrementing '*n_ops' for each new op. */
3369 handle_flow_miss(struct flow_miss *miss, struct flow_miss_op *ops,
3372 struct facet *facet;
3374 miss->ofproto->n_missed += list_size(&miss->packets);
3376 facet = facet_lookup_valid(miss->ofproto, &miss->flow);
3378 /* There does not exist a bijection between 'struct flow' and datapath
3379 * flow keys with fitness ODP_FIT_TO_LITTLE. This breaks a fundamental
3380 * assumption used throughout the facet and subfacet handling code.
3381 * Since we have to handle these misses in userspace anyway, we simply
3382 * skip facet creation, avoiding the problem altogether. */
3383 if (miss->key_fitness == ODP_FIT_TOO_LITTLE
3384 || !flow_miss_should_make_facet(miss)) {
3388 facet = facet_create(miss);
3390 handle_flow_miss_with_facet(miss, facet, ops, n_ops);
3393 static struct drop_key *
3394 drop_key_lookup(const struct dpif_backer *backer, const struct nlattr *key,
3397 struct drop_key *drop_key;
3399 HMAP_FOR_EACH_WITH_HASH (drop_key, hmap_node, hash_bytes(key, key_len, 0),
3400 &backer->drop_keys) {
3401 if (drop_key->key_len == key_len
3402 && !memcmp(drop_key->key, key, key_len)) {
3410 drop_key_clear(struct dpif_backer *backer)
3412 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3413 struct drop_key *drop_key, *next;
3415 HMAP_FOR_EACH_SAFE (drop_key, next, hmap_node, &backer->drop_keys) {
3418 error = dpif_flow_del(backer->dpif, drop_key->key, drop_key->key_len,
3420 if (error && !VLOG_DROP_WARN(&rl)) {
3421 struct ds ds = DS_EMPTY_INITIALIZER;
3422 odp_flow_key_format(drop_key->key, drop_key->key_len, &ds);
3423 VLOG_WARN("Failed to delete drop key (%s) (%s)",
3424 ovs_strerror(error), ds_cstr(&ds));
3428 hmap_remove(&backer->drop_keys, &drop_key->hmap_node);
3429 drop_key_destroy(drop_key);
3432 udpif_drop_key_clear(backer->udpif);
3436 handle_flow_misses(struct dpif_backer *backer, struct flow_miss_batch *fmb)
3438 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH];
3439 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH];
3440 struct flow_miss *miss;
3443 /* Process each element in the to-do list, constructing the set of
3444 * operations to batch. */
3446 HMAP_FOR_EACH (miss, hmap_node, &fmb->misses) {
3447 handle_flow_miss(miss, flow_miss_ops, &n_ops);
3449 ovs_assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
3451 /* Execute batch. */
3452 for (i = 0; i < n_ops; i++) {
3453 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
3455 dpif_operate(backer->dpif, dpif_ops, n_ops);
3457 for (i = 0; i < n_ops; i++) {
3458 if (dpif_ops[i]->error != 0
3459 && flow_miss_ops[i].dpif_op.type == DPIF_OP_FLOW_PUT
3460 && flow_miss_ops[i].subfacet) {
3461 struct subfacet *subfacet = flow_miss_ops[i].subfacet;
3463 COVERAGE_INC(subfacet_install_fail);
3465 /* Zero-out subfacet counters when installation failed, but
3466 * datapath reported hits. This should not happen and
3467 * indicates a bug, since if the datapath flow exists, we
3468 * should not be attempting to create a new subfacet. A
3469 * buggy datapath could trigger this, so just zero out the
3470 * counters and log an error. */
3471 if (subfacet->dp_packet_count || subfacet->dp_byte_count) {
3472 VLOG_ERR_RL(&rl, "failed to install subfacet for which "
3473 "datapath reported hits");
3474 subfacet->dp_packet_count = subfacet->dp_byte_count = 0;
3477 subfacet->path = SF_NOT_INSTALLED;
3483 handle_sflow_upcall(struct dpif_backer *backer,
3484 const struct dpif_upcall *upcall)
3486 struct ofproto_dpif *ofproto;
3487 union user_action_cookie cookie;
3489 odp_port_t odp_in_port;
3491 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3492 &flow, NULL, &ofproto, &odp_in_port)
3493 || !ofproto->sflow) {
3497 memset(&cookie, 0, sizeof cookie);
3498 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.sflow);
3499 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
3500 odp_in_port, &cookie);
3504 handle_flow_sample_upcall(struct dpif_backer *backer,
3505 const struct dpif_upcall *upcall)
3507 struct ofproto_dpif *ofproto;
3508 union user_action_cookie cookie;
3511 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3512 &flow, NULL, &ofproto, NULL)
3513 || !ofproto->ipfix) {
3517 memset(&cookie, 0, sizeof cookie);
3518 memcpy(&cookie, nl_attr_get(upcall->userdata), sizeof cookie.flow_sample);
3520 /* The flow reflects exactly the contents of the packet. Sample
3521 * the packet using it. */
3522 dpif_ipfix_flow_sample(ofproto->ipfix, upcall->packet, &flow,
3523 cookie.flow_sample.collector_set_id,
3524 cookie.flow_sample.probability,
3525 cookie.flow_sample.obs_domain_id,
3526 cookie.flow_sample.obs_point_id);
3530 handle_ipfix_upcall(struct dpif_backer *backer,
3531 const struct dpif_upcall *upcall)
3533 struct ofproto_dpif *ofproto;
3536 if (xlate_receive(backer, upcall->packet, upcall->key, upcall->key_len,
3537 &flow, NULL, &ofproto, NULL)
3538 || !ofproto->ipfix) {
3542 /* The flow reflects exactly the contents of the packet. Sample
3543 * the packet using it. */
3544 dpif_ipfix_bridge_sample(ofproto->ipfix, upcall->packet, &flow);
3548 handle_upcalls(struct dpif_backer *backer)
3550 struct flow_miss_batch *fmb;
3553 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3554 struct upcall *upcall = upcall_next(backer->udpif);
3560 switch (upcall->type) {
3562 handle_sflow_upcall(backer, &upcall->dpif_upcall);
3565 case FLOW_SAMPLE_UPCALL:
3566 handle_flow_sample_upcall(backer, &upcall->dpif_upcall);
3570 handle_ipfix_upcall(backer, &upcall->dpif_upcall);
3580 upcall_destroy(upcall);
3583 for (n_processed = 0; n_processed < FLOW_MISS_MAX_BATCH; n_processed++) {
3584 struct drop_key *drop_key = drop_key_next(backer->udpif);
3589 if (!drop_key_lookup(backer, drop_key->key, drop_key->key_len)) {
3590 hmap_insert(&backer->drop_keys, &drop_key->hmap_node,
3591 hash_bytes(drop_key->key, drop_key->key_len, 0));
3592 dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
3593 drop_key->key, drop_key->key_len,
3594 NULL, 0, NULL, 0, NULL);
3596 drop_key_destroy(drop_key);
3600 fmb = flow_miss_batch_next(backer->udpif);
3602 handle_flow_misses(backer, fmb);
3603 flow_miss_batch_destroy(fmb);
3607 /* Flow expiration. */
3609 static int subfacet_max_idle(const struct dpif_backer *);
3610 static void update_stats(struct dpif_backer *);
3611 static void rule_expire(struct rule_dpif *);
3612 static void expire_subfacets(struct dpif_backer *, int dp_max_idle);
3614 /* This function is called periodically by run(). Its job is to collect
3615 * updates for the flows that have been installed into the datapath, most
3616 * importantly when they last were used, and then use that information to
3617 * expire flows that have not been used recently.
3619 * Returns the number of milliseconds after which it should be called again. */
3621 expire(struct dpif_backer *backer)
3623 struct ofproto_dpif *ofproto;
3627 /* Periodically clear out the drop keys in an effort to keep them
3628 * relatively few. */
3629 drop_key_clear(backer);
3631 /* Update stats for each flow in the backer. */
3632 update_stats(backer);
3634 n_subfacets = hmap_count(&backer->subfacets);
3636 struct subfacet *subfacet;
3637 long long int total, now;
3641 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3642 total += now - subfacet->created;
3644 backer->avg_subfacet_life += total / n_subfacets;
3646 backer->avg_subfacet_life /= 2;
3648 backer->avg_n_subfacet += n_subfacets;
3649 backer->avg_n_subfacet /= 2;
3651 backer->max_n_subfacet = MAX(backer->max_n_subfacet, n_subfacets);
3653 max_idle = subfacet_max_idle(backer);
3654 expire_subfacets(backer, max_idle);
3656 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
3657 struct rule *rule, *next_rule;
3659 if (ofproto->backer != backer) {
3663 /* Expire OpenFlow flows whose idle_timeout or hard_timeout
3665 ovs_mutex_lock(&ofproto->up.expirable_mutex);
3666 LIST_FOR_EACH_SAFE (rule, next_rule, expirable,
3667 &ofproto->up.expirable) {
3668 rule_expire(rule_dpif_cast(rule));
3670 ovs_mutex_unlock(&ofproto->up.expirable_mutex);
3672 /* All outstanding data in existing flows has been accounted, so it's a
3673 * good time to do bond rebalancing. */
3674 if (ofproto->has_bonded_bundles) {
3675 struct ofbundle *bundle;
3677 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
3679 bond_rebalance(bundle->bond);
3685 return MIN(max_idle, 1000);
3688 /* Updates flow table statistics given that the datapath just reported 'stats'
3689 * as 'subfacet''s statistics. */
3691 update_subfacet_stats(struct subfacet *subfacet,
3692 const struct dpif_flow_stats *stats)
3694 struct facet *facet = subfacet->facet;
3695 struct dpif_flow_stats diff;
3697 diff.tcp_flags = stats->tcp_flags;
3698 diff.used = stats->used;
3700 if (stats->n_packets >= subfacet->dp_packet_count) {
3701 diff.n_packets = stats->n_packets - subfacet->dp_packet_count;
3703 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
3707 if (stats->n_bytes >= subfacet->dp_byte_count) {
3708 diff.n_bytes = stats->n_bytes - subfacet->dp_byte_count;
3710 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
3714 facet->ofproto->n_hit += diff.n_packets;
3715 subfacet->dp_packet_count = stats->n_packets;
3716 subfacet->dp_byte_count = stats->n_bytes;
3717 subfacet_update_stats(subfacet, &diff);
3719 if (facet->accounted_bytes < facet->byte_count) {
3721 facet_account(facet);
3722 facet->accounted_bytes = facet->byte_count;
3726 /* 'key' with length 'key_len' bytes is a flow in 'dpif' that we know nothing
3727 * about, or a flow that shouldn't be installed but was anyway. Delete it. */
3729 delete_unexpected_flow(struct dpif_backer *backer,
3730 const struct nlattr *key, size_t key_len)
3732 if (!VLOG_DROP_WARN(&rl)) {
3736 odp_flow_key_format(key, key_len, &s);
3737 VLOG_WARN("unexpected flow: %s", ds_cstr(&s));
3741 COVERAGE_INC(facet_unexpected);
3742 dpif_flow_del(backer->dpif, key, key_len, NULL);
3745 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
3747 * This function also pushes statistics updates to rules which each facet
3748 * resubmits into. Generally these statistics will be accurate. However, if a
3749 * facet changes the rule it resubmits into at some time in between
3750 * update_stats() runs, it is possible that statistics accrued to the
3751 * old rule will be incorrectly attributed to the new rule. This could be
3752 * avoided by calling update_stats() whenever rules are created or
3753 * deleted. However, the performance impact of making so many calls to the
3754 * datapath do not justify the benefit of having perfectly accurate statistics.
3756 * In addition, this function maintains per ofproto flow hit counts. The patch
3757 * port is not treated specially. e.g. A packet ingress from br0 patched into
3758 * br1 will increase the hit count of br0 by 1, however, does not affect
3759 * the hit or miss counts of br1.
3762 update_stats(struct dpif_backer *backer)
3764 const struct dpif_flow_stats *stats;
3765 struct dpif_flow_dump dump;
3766 const struct nlattr *key, *mask;
3767 size_t key_len, mask_len;
3769 dpif_flow_dump_start(&dump, backer->dpif);
3770 while (dpif_flow_dump_next(&dump, &key, &key_len,
3771 &mask, &mask_len, NULL, NULL, &stats)) {
3772 struct subfacet *subfacet;
3775 key_hash = odp_flow_key_hash(key, key_len);
3776 subfacet = subfacet_find(backer, key, key_len, key_hash);
3777 switch (subfacet ? subfacet->path : SF_NOT_INSTALLED) {
3779 update_subfacet_stats(subfacet, stats);
3783 /* Stats are updated per-packet. */
3786 case SF_NOT_INSTALLED:
3788 delete_unexpected_flow(backer, key, key_len);
3793 dpif_flow_dump_done(&dump);
3795 update_moving_averages(backer);
3798 /* Calculates and returns the number of milliseconds of idle time after which
3799 * subfacets should expire from the datapath. When a subfacet expires, we fold
3800 * its statistics into its facet, and when a facet's last subfacet expires, we
3801 * fold its statistic into its rule. */
3803 subfacet_max_idle(const struct dpif_backer *backer)
3806 * Idle time histogram.
3808 * Most of the time a switch has a relatively small number of subfacets.
3809 * When this is the case we might as well keep statistics for all of them
3810 * in userspace and to cache them in the kernel datapath for performance as
3813 * As the number of subfacets increases, the memory required to maintain
3814 * statistics about them in userspace and in the kernel becomes
3815 * significant. However, with a large number of subfacets it is likely
3816 * that only a few of them are "heavy hitters" that consume a large amount
3817 * of bandwidth. At this point, only heavy hitters are worth caching in
3818 * the kernel and maintaining in userspaces; other subfacets we can
3821 * The technique used to compute the idle time is to build a histogram with
3822 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3823 * that is installed in the kernel gets dropped in the appropriate bucket.
3824 * After the histogram has been built, we compute the cutoff so that only
3825 * the most-recently-used 1% of subfacets (but at least
3826 * flow_eviction_threshold flows) are kept cached. At least
3827 * the most-recently-used bucket of subfacets is kept, so actually an
3828 * arbitrary number of subfacets can be kept in any given expiration run
3829 * (though the next run will delete most of those unless they receive
3832 * This requires a second pass through the subfacets, in addition to the
3833 * pass made by update_stats(), because the former function never looks at
3834 * uninstallable subfacets.
3836 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3837 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3838 int buckets[N_BUCKETS] = { 0 };
3839 int total, subtotal, bucket;
3840 struct subfacet *subfacet;
3844 total = hmap_count(&backer->subfacets);
3845 if (total <= flow_eviction_threshold) {
3846 return N_BUCKETS * BUCKET_WIDTH;
3849 /* Build histogram. */
3851 HMAP_FOR_EACH (subfacet, hmap_node, &backer->subfacets) {
3852 long long int idle = now - subfacet->used;
3853 int bucket = (idle <= 0 ? 0
3854 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3855 : (unsigned int) idle / BUCKET_WIDTH);
3859 /* Find the first bucket whose flows should be expired. */
3860 subtotal = bucket = 0;
3862 subtotal += buckets[bucket++];
3863 } while (bucket < N_BUCKETS &&
3864 subtotal < MAX(flow_eviction_threshold, total / 100));
3866 if (VLOG_IS_DBG_ENABLED()) {
3870 ds_put_cstr(&s, "keep");
3871 for (i = 0; i < N_BUCKETS; i++) {
3873 ds_put_cstr(&s, ", drop");
3876 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3879 VLOG_INFO("%s (msec:count)", ds_cstr(&s));
3883 return bucket * BUCKET_WIDTH;
3887 expire_subfacets(struct dpif_backer *backer, int dp_max_idle)
3889 /* Cutoff time for most flows. */
3890 long long int normal_cutoff = time_msec() - dp_max_idle;
3892 /* We really want to keep flows for special protocols around, so use a more
3893 * conservative cutoff. */
3894 long long int special_cutoff = time_msec() - 10000;
3896 struct subfacet *subfacet, *next_subfacet;
3897 struct subfacet *batch[SUBFACET_DESTROY_MAX_BATCH];
3901 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3902 &backer->subfacets) {
3903 long long int cutoff;
3905 cutoff = (subfacet->facet->xout.slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP
3909 if (subfacet->used < cutoff) {
3910 if (subfacet->path != SF_NOT_INSTALLED) {
3911 batch[n_batch++] = subfacet;
3912 if (n_batch >= SUBFACET_DESTROY_MAX_BATCH) {
3913 subfacet_destroy_batch(backer, batch, n_batch);
3917 subfacet_destroy(subfacet);
3923 subfacet_destroy_batch(backer, batch, n_batch);
3927 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3928 * then delete it entirely. */
3930 rule_expire(struct rule_dpif *rule)
3932 uint16_t idle_timeout, hard_timeout;
3936 if (rule->up.pending) {
3937 /* We'll have to expire it later. */
3941 ovs_mutex_lock(&rule->up.timeout_mutex);
3942 hard_timeout = rule->up.hard_timeout;
3943 idle_timeout = rule->up.idle_timeout;
3944 ovs_mutex_unlock(&rule->up.timeout_mutex);
3946 /* Has 'rule' expired? */
3948 if (hard_timeout && now > rule->up.modified + hard_timeout * 1000) {
3949 reason = OFPRR_HARD_TIMEOUT;
3950 } else if (idle_timeout && now > rule->up.used + idle_timeout * 1000) {
3951 reason = OFPRR_IDLE_TIMEOUT;
3956 if (!ovs_rwlock_trywrlock(&rule->up.evict)) {
3957 COVERAGE_INC(ofproto_dpif_expired);
3959 /* Get rid of the rule. */
3960 ofproto_rule_expire(&rule->up, reason);
3966 /* Creates and returns a new facet based on 'miss'.
3968 * The caller must already have determined that no facet with an identical
3969 * 'miss->flow' exists in 'miss->ofproto'.
3971 * 'rule' and 'xout' must have been created based on 'miss'.
3973 * 'facet'' statistics are initialized based on 'stats'.
3975 * The facet will initially have no subfacets. The caller should create (at
3976 * least) one subfacet with subfacet_create(). */
3977 static struct facet *
3978 facet_create(const struct flow_miss *miss)
3980 struct ofproto_dpif *ofproto = miss->ofproto;
3981 struct facet *facet;
3984 facet = xzalloc(sizeof *facet);
3985 facet->ofproto = miss->ofproto;
3986 facet->used = miss->stats.used;
3987 facet->flow = miss->flow;
3988 facet->learn_rl = time_msec() + 500;
3990 list_init(&facet->subfacets);
3991 netflow_flow_init(&facet->nf_flow);
3992 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3994 xlate_out_copy(&facet->xout, &miss->xout);
3996 match_init(&match, &facet->flow, &facet->xout.wc);
3997 cls_rule_init(&facet->cr, &match, OFP_DEFAULT_PRIORITY);
3998 ovs_rwlock_wrlock(&ofproto->facets.rwlock);
3999 classifier_insert(&ofproto->facets, &facet->cr);
4000 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4002 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4007 facet_free(struct facet *facet)
4010 xlate_out_uninit(&facet->xout);
4015 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
4016 * 'packet', which arrived on 'in_port'. */
4018 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
4019 const struct nlattr *odp_actions, size_t actions_len,
4020 struct ofpbuf *packet)
4022 struct odputil_keybuf keybuf;
4026 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4027 odp_flow_key_from_flow(&key, flow,
4028 ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port));
4030 error = dpif_execute(ofproto->backer->dpif, key.data, key.size,
4031 odp_actions, actions_len, packet);
4035 /* Remove 'facet' from its ofproto and free up the associated memory:
4037 * - If 'facet' was installed in the datapath, uninstalls it and updates its
4038 * rule's statistics, via subfacet_uninstall().
4040 * - Removes 'facet' from its rule and from ofproto->facets.
4043 facet_remove(struct facet *facet)
4045 struct subfacet *subfacet, *next_subfacet;
4047 ovs_assert(!list_is_empty(&facet->subfacets));
4049 /* First uninstall all of the subfacets to get final statistics. */
4050 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4051 subfacet_uninstall(subfacet);
4054 /* Flush the final stats to the rule.
4056 * This might require us to have at least one subfacet around so that we
4057 * can use its actions for accounting in facet_account(), which is why we
4058 * have uninstalled but not yet destroyed the subfacets. */
4059 facet_flush_stats(facet);
4061 /* Now we're really all done so destroy everything. */
4062 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
4063 &facet->subfacets) {
4064 subfacet_destroy__(subfacet);
4066 ovs_rwlock_wrlock(&facet->ofproto->facets.rwlock);
4067 classifier_remove(&facet->ofproto->facets, &facet->cr);
4068 ovs_rwlock_unlock(&facet->ofproto->facets.rwlock);
4069 cls_rule_destroy(&facet->cr);
4073 /* Feed information from 'facet' back into the learning table to keep it in
4074 * sync with what is actually flowing through the datapath. */
4076 facet_learn(struct facet *facet)
4078 long long int now = time_msec();
4080 if (!facet->xout.has_fin_timeout && now < facet->learn_rl) {
4084 facet->learn_rl = now + 500;
4086 if (!facet->xout.has_learn
4087 && !facet->xout.has_normal
4088 && (!facet->xout.has_fin_timeout
4089 || !(facet->tcp_flags & (TCP_FIN | TCP_RST)))) {
4093 facet_push_stats(facet, true);
4097 facet_account(struct facet *facet)
4099 const struct nlattr *a;
4104 if (!facet->xout.has_normal || !facet->ofproto->has_bonded_bundles) {
4107 n_bytes = facet->byte_count - facet->accounted_bytes;
4109 /* This loop feeds byte counters to bond_account() for rebalancing to use
4110 * as a basis. We also need to track the actual VLAN on which the packet
4111 * is going to be sent to ensure that it matches the one passed to
4112 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
4115 * We use the actions from an arbitrary subfacet because they should all
4116 * be equally valid for our purpose. */
4117 vlan_tci = facet->flow.vlan_tci;
4118 NL_ATTR_FOR_EACH_UNSAFE (a, left, facet->xout.odp_actions.data,
4119 facet->xout.odp_actions.size) {
4120 const struct ovs_action_push_vlan *vlan;
4121 struct ofport_dpif *port;
4123 switch (nl_attr_type(a)) {
4124 case OVS_ACTION_ATTR_OUTPUT:
4125 port = get_odp_port(facet->ofproto, nl_attr_get_odp_port(a));
4126 if (port && port->bundle && port->bundle->bond) {
4127 bond_account(port->bundle->bond, &facet->flow,
4128 vlan_tci_to_vid(vlan_tci), n_bytes);
4132 case OVS_ACTION_ATTR_POP_VLAN:
4133 vlan_tci = htons(0);
4136 case OVS_ACTION_ATTR_PUSH_VLAN:
4137 vlan = nl_attr_get(a);
4138 vlan_tci = vlan->vlan_tci;
4144 /* Returns true if the only action for 'facet' is to send to the controller.
4145 * (We don't report NetFlow expiration messages for such facets because they
4146 * are just part of the control logic for the network, not real traffic). */
4148 facet_is_controller_flow(struct facet *facet)
4151 struct ofproto_dpif *ofproto = facet->ofproto;
4152 const struct ofpact *ofpacts;
4153 struct rule_dpif *rule;
4157 rule_dpif_lookup(ofproto, &facet->flow, NULL, &rule);
4158 ofpacts_len = rule->up.ofpacts_len;
4159 ofpacts = rule->up.ofpacts;
4160 is_controller = ofpacts_len > 0
4161 && ofpacts->type == OFPACT_CONTROLLER
4162 && ofpact_next(ofpacts) >= ofpact_end(ofpacts, ofpacts_len);
4164 return is_controller;
4169 /* Folds all of 'facet''s statistics into its rule. Also updates the
4170 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
4171 * 'facet''s statistics in the datapath should have been zeroed and folded into
4172 * its packet and byte counts before this function is called. */
4174 facet_flush_stats(struct facet *facet)
4176 struct ofproto_dpif *ofproto = facet->ofproto;
4177 struct subfacet *subfacet;
4179 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4180 ovs_assert(!subfacet->dp_byte_count);
4181 ovs_assert(!subfacet->dp_packet_count);
4184 facet_push_stats(facet, false);
4185 if (facet->accounted_bytes < facet->byte_count) {
4186 facet_account(facet);
4187 facet->accounted_bytes = facet->byte_count;
4190 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
4191 struct ofexpired expired;
4192 expired.flow = facet->flow;
4193 expired.packet_count = facet->packet_count;
4194 expired.byte_count = facet->byte_count;
4195 expired.used = facet->used;
4196 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
4199 /* Reset counters to prevent double counting if 'facet' ever gets
4201 facet_reset_counters(facet);
4203 netflow_flow_clear(&facet->nf_flow);
4204 facet->tcp_flags = 0;
4207 /* Searches 'ofproto''s table of facets for one which would be responsible for
4208 * 'flow'. Returns it if found, otherwise a null pointer.
4210 * The returned facet might need revalidation; use facet_lookup_valid()
4211 * instead if that is important. */
4212 static struct facet *
4213 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
4215 struct cls_rule *cr;
4217 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4218 cr = classifier_lookup(&ofproto->facets, flow, NULL);
4219 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4220 return cr ? CONTAINER_OF(cr, struct facet, cr) : NULL;
4223 /* Searches 'ofproto''s table of facets for one capable that covers
4224 * 'flow'. Returns it if found, otherwise a null pointer.
4226 * The returned facet is guaranteed to be valid. */
4227 static struct facet *
4228 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
4230 struct facet *facet;
4232 facet = facet_find(ofproto, flow);
4234 && ofproto->backer->need_revalidate
4235 && !facet_revalidate(facet)) {
4243 facet_check_consistency(struct facet *facet)
4245 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
4247 struct xlate_out xout;
4248 struct xlate_in xin;
4250 struct rule_dpif *rule;
4253 /* Check the datapath actions for consistency. */
4254 rule_dpif_lookup(facet->ofproto, &facet->flow, NULL, &rule);
4255 xlate_in_init(&xin, facet->ofproto, &facet->flow, rule, 0, NULL);
4256 xlate_actions(&xin, &xout);
4259 ok = ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)
4260 && facet->xout.slow == xout.slow;
4261 if (!ok && !VLOG_DROP_WARN(&rl)) {
4262 struct ds s = DS_EMPTY_INITIALIZER;
4264 flow_format(&s, &facet->flow);
4265 ds_put_cstr(&s, ": inconsistency in facet");
4267 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4268 ds_put_cstr(&s, " (actions were: ");
4269 format_odp_actions(&s, facet->xout.odp_actions.data,
4270 facet->xout.odp_actions.size);
4271 ds_put_cstr(&s, ") (correct actions: ");
4272 format_odp_actions(&s, xout.odp_actions.data,
4273 xout.odp_actions.size);
4274 ds_put_char(&s, ')');
4277 if (facet->xout.slow != xout.slow) {
4278 ds_put_format(&s, " slow path incorrect. should be %d", xout.slow);
4283 xlate_out_uninit(&xout);
4288 /* Re-searches the classifier for 'facet':
4290 * - If the rule found is different from 'facet''s current rule, moves
4291 * 'facet' to the new rule and recompiles its actions.
4293 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
4294 * where it is and recompiles its actions anyway.
4296 * - If any of 'facet''s subfacets correspond to a new flow according to
4297 * xlate_receive(), 'facet' is removed.
4299 * Returns true if 'facet' is still valid. False if 'facet' was removed. */
4301 facet_revalidate(struct facet *facet)
4303 struct ofproto_dpif *ofproto = facet->ofproto;
4304 struct rule_dpif *new_rule;
4305 struct subfacet *subfacet;
4306 struct flow_wildcards wc;
4307 struct xlate_out xout;
4308 struct xlate_in xin;
4310 COVERAGE_INC(facet_revalidate);
4312 /* Check that child subfacets still correspond to this facet. Tunnel
4313 * configuration changes could cause a subfacet's OpenFlow in_port to
4315 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
4316 struct ofproto_dpif *recv_ofproto;
4317 struct flow recv_flow;
4320 error = xlate_receive(ofproto->backer, NULL, subfacet->key,
4321 subfacet->key_len, &recv_flow, NULL,
4322 &recv_ofproto, NULL);
4324 || recv_ofproto != ofproto
4325 || facet != facet_find(ofproto, &recv_flow)) {
4326 facet_remove(facet);
4331 flow_wildcards_init_catchall(&wc);
4332 rule_dpif_lookup(ofproto, &facet->flow, &wc, &new_rule);
4334 /* Calculate new datapath actions.
4336 * We do not modify any 'facet' state yet, because we might need to, e.g.,
4337 * emit a NetFlow expiration and, if so, we need to have the old state
4338 * around to properly compose it. */
4339 xlate_in_init(&xin, ofproto, &facet->flow, new_rule, 0, NULL);
4340 xlate_actions(&xin, &xout);
4341 flow_wildcards_or(&xout.wc, &xout.wc, &wc);
4343 /* A facet's slow path reason should only change under dramatic
4344 * circumstances. Rather than try to update everything, it's simpler to
4345 * remove the facet and start over.
4347 * More importantly, if a facet's wildcards change, it will be relatively
4348 * difficult to figure out if its subfacets still belong to it, and if not
4349 * which facet they may belong to. Again, to avoid the complexity, we
4350 * simply give up instead. */
4351 if (facet->xout.slow != xout.slow
4352 || memcmp(&facet->xout.wc, &xout.wc, sizeof xout.wc)) {
4353 facet_remove(facet);
4354 xlate_out_uninit(&xout);
4355 rule_release(new_rule);
4359 if (!ofpbuf_equal(&facet->xout.odp_actions, &xout.odp_actions)) {
4360 LIST_FOR_EACH(subfacet, list_node, &facet->subfacets) {
4361 if (subfacet->path == SF_FAST_PATH) {
4362 struct dpif_flow_stats stats;
4364 subfacet_install(subfacet, &xout.odp_actions, &stats);
4365 subfacet_update_stats(subfacet, &stats);
4369 facet_flush_stats(facet);
4371 ofpbuf_clear(&facet->xout.odp_actions);
4372 ofpbuf_put(&facet->xout.odp_actions, xout.odp_actions.data,
4373 xout.odp_actions.size);
4376 /* Update 'facet' now that we've taken care of all the old state. */
4377 facet->xout.slow = xout.slow;
4378 facet->xout.has_learn = xout.has_learn;
4379 facet->xout.has_normal = xout.has_normal;
4380 facet->xout.has_fin_timeout = xout.has_fin_timeout;
4381 facet->xout.nf_output_iface = xout.nf_output_iface;
4382 facet->xout.mirrors = xout.mirrors;
4383 facet->nf_flow.output_iface = facet->xout.nf_output_iface;
4384 facet->used = MAX(facet->used, new_rule->up.created);
4386 xlate_out_uninit(&xout);
4387 rule_release(new_rule);
4392 facet_reset_counters(struct facet *facet)
4394 facet->packet_count = 0;
4395 facet->byte_count = 0;
4396 facet->prev_packet_count = 0;
4397 facet->prev_byte_count = 0;
4398 facet->accounted_bytes = 0;
4402 flow_push_stats(struct ofproto_dpif *ofproto, struct flow *flow,
4403 struct dpif_flow_stats *stats, bool may_learn)
4405 struct ofport_dpif *in_port;
4406 struct rule_dpif *rule;
4407 struct xlate_in xin;
4409 in_port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4410 if (in_port && in_port->is_tunnel) {
4411 netdev_vport_inc_rx(in_port->up.netdev, stats);
4414 rule_dpif_lookup(ofproto, flow, NULL, &rule);
4415 rule_credit_stats(rule, stats);
4416 xlate_in_init(&xin, ofproto, flow, rule, stats->tcp_flags, NULL);
4417 xin.resubmit_stats = stats;
4418 xin.may_learn = may_learn;
4419 xlate_actions_for_side_effects(&xin);
4424 facet_push_stats(struct facet *facet, bool may_learn)
4426 struct dpif_flow_stats stats;
4428 ovs_assert(facet->packet_count >= facet->prev_packet_count);
4429 ovs_assert(facet->byte_count >= facet->prev_byte_count);
4430 ovs_assert(facet->used >= facet->prev_used);
4432 stats.n_packets = facet->packet_count - facet->prev_packet_count;
4433 stats.n_bytes = facet->byte_count - facet->prev_byte_count;
4434 stats.used = facet->used;
4435 stats.tcp_flags = facet->tcp_flags;
4437 if (may_learn || stats.n_packets || facet->used > facet->prev_used) {
4438 facet->prev_packet_count = facet->packet_count;
4439 facet->prev_byte_count = facet->byte_count;
4440 facet->prev_used = facet->used;
4442 netflow_flow_update_time(facet->ofproto->netflow, &facet->nf_flow,
4444 netflow_flow_update_flags(&facet->nf_flow, facet->tcp_flags);
4445 mirror_update_stats(facet->ofproto->mbridge, facet->xout.mirrors,
4446 stats.n_packets, stats.n_bytes);
4447 flow_push_stats(facet->ofproto, &facet->flow, &stats, may_learn);
4452 push_all_stats__(bool run_fast)
4454 static long long int rl = LLONG_MIN;
4455 struct ofproto_dpif *ofproto;
4457 if (time_msec() < rl) {
4461 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
4462 struct cls_cursor cursor;
4463 struct facet *facet;
4465 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
4466 cls_cursor_init(&cursor, &ofproto->facets, NULL);
4467 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
4468 facet_push_stats(facet, false);
4473 ovs_rwlock_unlock(&ofproto->facets.rwlock);
4476 rl = time_msec() + 100;
4480 push_all_stats(void)
4482 push_all_stats__(true);
4486 rule_credit_stats(struct rule_dpif *rule, const struct dpif_flow_stats *stats)
4488 ovs_mutex_lock(&rule->stats_mutex);
4489 rule->packet_count += stats->n_packets;
4490 rule->byte_count += stats->n_bytes;
4491 ofproto_rule_update_used(&rule->up, stats->used);
4492 ovs_mutex_unlock(&rule->stats_mutex);
4497 static struct subfacet *
4498 subfacet_find(struct dpif_backer *backer, const struct nlattr *key,
4499 size_t key_len, uint32_t key_hash)
4501 struct subfacet *subfacet;
4503 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
4504 &backer->subfacets) {
4505 if (subfacet->key_len == key_len
4506 && !memcmp(key, subfacet->key, key_len)) {
4514 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
4515 * 'key_fitness', 'key', and 'key_len' members in 'miss'. Returns the
4516 * existing subfacet if there is one, otherwise creates and returns a
4518 static struct subfacet *
4519 subfacet_create(struct facet *facet, struct flow_miss *miss)
4521 struct dpif_backer *backer = miss->ofproto->backer;
4522 enum odp_key_fitness key_fitness = miss->key_fitness;
4523 const struct nlattr *key = miss->key;
4524 size_t key_len = miss->key_len;
4526 struct subfacet *subfacet;
4528 key_hash = odp_flow_key_hash(key, key_len);
4530 if (list_is_empty(&facet->subfacets)) {
4531 subfacet = &facet->one_subfacet;
4533 subfacet = subfacet_find(backer, key, key_len, key_hash);
4535 if (subfacet->facet == facet) {
4539 /* This shouldn't happen. */
4540 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
4541 subfacet_destroy(subfacet);
4544 subfacet = xmalloc(sizeof *subfacet);
4547 hmap_insert(&backer->subfacets, &subfacet->hmap_node, key_hash);
4548 list_push_back(&facet->subfacets, &subfacet->list_node);
4549 subfacet->facet = facet;
4550 subfacet->key_fitness = key_fitness;
4551 subfacet->key = xmemdup(key, key_len);
4552 subfacet->key_len = key_len;
4553 subfacet->used = miss->stats.used;
4554 subfacet->created = subfacet->used;
4555 subfacet->dp_packet_count = 0;
4556 subfacet->dp_byte_count = 0;
4557 subfacet->path = SF_NOT_INSTALLED;
4558 subfacet->backer = backer;
4560 backer->subfacet_add_count++;
4564 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
4565 * its facet within 'ofproto', and frees it. */
4567 subfacet_destroy__(struct subfacet *subfacet)
4569 struct facet *facet = subfacet->facet;
4570 struct ofproto_dpif *ofproto = facet->ofproto;
4572 /* Update ofproto stats before uninstall the subfacet. */
4573 ofproto->backer->subfacet_del_count++;
4575 subfacet_uninstall(subfacet);
4576 hmap_remove(&subfacet->backer->subfacets, &subfacet->hmap_node);
4577 list_remove(&subfacet->list_node);
4578 free(subfacet->key);
4579 if (subfacet != &facet->one_subfacet) {
4584 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
4585 * last remaining subfacet in its facet destroys the facet too. */
4587 subfacet_destroy(struct subfacet *subfacet)
4589 struct facet *facet = subfacet->facet;
4591 if (list_is_singleton(&facet->subfacets)) {
4592 /* facet_remove() needs at least one subfacet (it will remove it). */
4593 facet_remove(facet);
4595 subfacet_destroy__(subfacet);
4600 subfacet_destroy_batch(struct dpif_backer *backer,
4601 struct subfacet **subfacets, int n)
4603 struct dpif_op ops[SUBFACET_DESTROY_MAX_BATCH];
4604 struct dpif_op *opsp[SUBFACET_DESTROY_MAX_BATCH];
4605 struct dpif_flow_stats stats[SUBFACET_DESTROY_MAX_BATCH];
4608 for (i = 0; i < n; i++) {
4609 ops[i].type = DPIF_OP_FLOW_DEL;
4610 ops[i].u.flow_del.key = subfacets[i]->key;
4611 ops[i].u.flow_del.key_len = subfacets[i]->key_len;
4612 ops[i].u.flow_del.stats = &stats[i];
4616 dpif_operate(backer->dpif, opsp, n);
4617 for (i = 0; i < n; i++) {
4618 subfacet_reset_dp_stats(subfacets[i], &stats[i]);
4619 subfacets[i]->path = SF_NOT_INSTALLED;
4620 subfacet_destroy(subfacets[i]);
4625 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
4626 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
4627 * in the datapath will be zeroed and 'stats' will be updated with traffic new
4628 * since 'subfacet' was last updated.
4630 * Returns 0 if successful, otherwise a positive errno value. */
4632 subfacet_install(struct subfacet *subfacet, const struct ofpbuf *odp_actions,
4633 struct dpif_flow_stats *stats)
4635 struct facet *facet = subfacet->facet;
4636 enum subfacet_path path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
4637 const struct nlattr *actions = odp_actions->data;
4638 size_t actions_len = odp_actions->size;
4639 struct odputil_keybuf maskbuf;
4642 uint64_t slow_path_stub[128 / 8];
4643 enum dpif_flow_put_flags flags;
4646 flags = subfacet->path == SF_NOT_INSTALLED ? DPIF_FP_CREATE
4649 flags |= DPIF_FP_ZERO_STATS;
4652 if (path == SF_SLOW_PATH) {
4653 compose_slow_path(facet->ofproto, &facet->flow, facet->xout.slow,
4654 slow_path_stub, sizeof slow_path_stub,
4655 &actions, &actions_len);
4658 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
4659 if (enable_megaflows) {
4660 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
4661 &facet->flow, UINT32_MAX);
4664 ret = dpif_flow_put(subfacet->backer->dpif, flags, subfacet->key,
4665 subfacet->key_len, mask.data, mask.size,
4666 actions, actions_len, stats);
4669 subfacet_reset_dp_stats(subfacet, stats);
4673 COVERAGE_INC(subfacet_install_fail);
4675 subfacet->path = path;
4680 /* If 'subfacet' is installed in the datapath, uninstalls it. */
4682 subfacet_uninstall(struct subfacet *subfacet)
4684 if (subfacet->path != SF_NOT_INSTALLED) {
4685 struct ofproto_dpif *ofproto = subfacet->facet->ofproto;
4686 struct dpif_flow_stats stats;
4689 error = dpif_flow_del(ofproto->backer->dpif, subfacet->key,
4690 subfacet->key_len, &stats);
4691 subfacet_reset_dp_stats(subfacet, &stats);
4693 subfacet_update_stats(subfacet, &stats);
4695 subfacet->path = SF_NOT_INSTALLED;
4697 ovs_assert(subfacet->dp_packet_count == 0);
4698 ovs_assert(subfacet->dp_byte_count == 0);
4702 /* Resets 'subfacet''s datapath statistics counters. This should be called
4703 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
4704 * non-null, it should contain the statistics returned by dpif when 'subfacet'
4705 * was reset in the datapath. 'stats' will be modified to include only
4706 * statistics new since 'subfacet' was last updated. */
4708 subfacet_reset_dp_stats(struct subfacet *subfacet,
4709 struct dpif_flow_stats *stats)
4712 && subfacet->dp_packet_count <= stats->n_packets
4713 && subfacet->dp_byte_count <= stats->n_bytes) {
4714 stats->n_packets -= subfacet->dp_packet_count;
4715 stats->n_bytes -= subfacet->dp_byte_count;
4718 subfacet->dp_packet_count = 0;
4719 subfacet->dp_byte_count = 0;
4722 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
4724 * Because of the meaning of a subfacet's counters, it only makes sense to do
4725 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
4726 * represents a packet that was sent by hand or if it represents statistics
4727 * that have been cleared out of the datapath. */
4729 subfacet_update_stats(struct subfacet *subfacet,
4730 const struct dpif_flow_stats *stats)
4732 if (stats->n_packets || stats->used > subfacet->used) {
4733 struct facet *facet = subfacet->facet;
4735 subfacet->used = MAX(subfacet->used, stats->used);
4736 facet->used = MAX(facet->used, stats->used);
4737 facet->packet_count += stats->n_packets;
4738 facet->byte_count += stats->n_bytes;
4739 facet->tcp_flags |= stats->tcp_flags;
4745 /* Lookup 'flow' in 'ofproto''s classifier. If 'wc' is non-null, sets
4746 * the fields that were relevant as part of the lookup. */
4748 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4749 struct flow_wildcards *wc, struct rule_dpif **rule)
4751 struct ofport_dpif *port;
4753 if (rule_dpif_lookup_in_table(ofproto, flow, wc, 0, rule)) {
4756 port = get_ofp_port(ofproto, flow->in_port.ofp_port);
4758 VLOG_WARN_RL(&rl, "packet-in on unknown OpenFlow port %"PRIu16,
4759 flow->in_port.ofp_port);
4762 *rule = choose_miss_rule(port ? port->up.pp.config : 0, ofproto->miss_rule,
4763 ofproto->no_packet_in_rule);
4764 ovs_rwlock_rdlock(&(*rule)->up.evict);
4768 rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
4769 const struct flow *flow, struct flow_wildcards *wc,
4770 uint8_t table_id, struct rule_dpif **rule)
4771 OVS_ACQ_RDLOCK((*rule)->up.evict)
4773 struct cls_rule *cls_rule;
4774 struct classifier *cls;
4778 if (table_id >= N_TABLES) {
4783 memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
4784 wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
4787 cls = &ofproto->up.tables[table_id].cls;
4788 ovs_rwlock_rdlock(&cls->rwlock);
4789 frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
4790 if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4791 /* We must pretend that transport ports are unavailable. */
4792 struct flow ofpc_normal_flow = *flow;
4793 ofpc_normal_flow.tp_src = htons(0);
4794 ofpc_normal_flow.tp_dst = htons(0);
4795 cls_rule = classifier_lookup(cls, &ofpc_normal_flow, wc);
4796 } else if (frag && ofproto->up.frag_handling == OFPC_FRAG_DROP) {
4797 cls_rule = &ofproto->drop_frags_rule->up.cr;
4799 flow_wildcards_init_exact(wc);
4802 cls_rule = classifier_lookup(cls, flow, wc);
4805 *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
4806 if (*rule && ovs_rwlock_tryrdlock(&(*rule)->up.evict)) {
4807 /* The rule is in the process of being removed. Best we can do is
4808 * pretend it isn't there. */
4811 ovs_rwlock_unlock(&cls->rwlock);
4813 return *rule != NULL;
4816 /* Given a port configuration (specified as zero if there's no port), chooses
4817 * which of 'miss_rule' and 'no_packet_in_rule' should be used in case of a
4818 * flow table miss. */
4820 choose_miss_rule(enum ofputil_port_config config, struct rule_dpif *miss_rule,
4821 struct rule_dpif *no_packet_in_rule)
4823 return config & OFPUTIL_PC_NO_PACKET_IN ? no_packet_in_rule : miss_rule;
4827 rule_release(struct rule_dpif *rule)
4830 ovs_rwlock_unlock(&rule->up.evict);
4835 complete_operation(struct rule_dpif *rule)
4837 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4839 ofproto->backer->need_revalidate = REV_FLOW_TABLE;
4841 struct dpif_completion *c = xmalloc(sizeof *c);
4842 c->op = rule->up.pending;
4843 list_push_back(&ofproto->completions, &c->list_node);
4845 ofoperation_complete(rule->up.pending, 0);
4849 static struct rule *
4852 struct rule_dpif *rule = xmalloc(sizeof *rule);
4857 rule_dealloc(struct rule *rule_)
4859 struct rule_dpif *rule = rule_dpif_cast(rule_);
4864 rule_construct(struct rule *rule_)
4866 struct rule_dpif *rule = rule_dpif_cast(rule_);
4867 ovs_mutex_init(&rule->stats_mutex, PTHREAD_MUTEX_NORMAL);
4868 ovs_mutex_lock(&rule->stats_mutex);
4869 rule->packet_count = 0;
4870 rule->byte_count = 0;
4871 ovs_mutex_unlock(&rule->stats_mutex);
4872 complete_operation(rule);
4877 rule_destruct(struct rule *rule_)
4879 struct rule_dpif *rule = rule_dpif_cast(rule_);
4880 complete_operation(rule);
4881 ovs_mutex_destroy(&rule->stats_mutex);
4885 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4887 struct rule_dpif *rule = rule_dpif_cast(rule_);
4889 /* push_all_stats() can handle flow misses which, when using the learn
4890 * action, can cause rules to be added and deleted. This can corrupt our
4891 * caller's datastructures which assume that rule_get_stats() doesn't have
4892 * an impact on the flow table. To be safe, we disable miss handling. */
4893 push_all_stats__(false);
4895 /* Start from historical data for 'rule' itself that are no longer tracked
4896 * in facets. This counts, for example, facets that have expired. */
4897 ovs_mutex_lock(&rule->stats_mutex);
4898 *packets = rule->packet_count;
4899 *bytes = rule->byte_count;
4900 ovs_mutex_unlock(&rule->stats_mutex);
4904 rule_dpif_execute(struct rule_dpif *rule, const struct flow *flow,
4905 struct ofpbuf *packet)
4907 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4908 struct dpif_flow_stats stats;
4909 struct xlate_out xout;
4910 struct xlate_in xin;
4912 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
4913 rule_credit_stats(rule, &stats);
4915 xlate_in_init(&xin, ofproto, flow, rule, stats.tcp_flags, packet);
4916 xin.resubmit_stats = &stats;
4917 xlate_actions(&xin, &xout);
4919 execute_odp_actions(ofproto, flow, xout.odp_actions.data,
4920 xout.odp_actions.size, packet);
4922 xlate_out_uninit(&xout);
4926 rule_execute(struct rule *rule, const struct flow *flow,
4927 struct ofpbuf *packet)
4929 rule_dpif_execute(rule_dpif_cast(rule), flow, packet);
4930 ofpbuf_delete(packet);
4935 rule_modify_actions(struct rule *rule_)
4937 struct rule_dpif *rule = rule_dpif_cast(rule_);
4939 complete_operation(rule);
4942 /* Sends 'packet' out 'ofport'.
4943 * May modify 'packet'.
4944 * Returns 0 if successful, otherwise a positive errno value. */
4946 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4948 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4949 uint64_t odp_actions_stub[1024 / 8];
4950 struct ofpbuf key, odp_actions;
4951 struct dpif_flow_stats stats;
4952 struct odputil_keybuf keybuf;
4953 struct ofpact_output output;
4954 struct xlate_out xout;
4955 struct xlate_in xin;
4957 union flow_in_port in_port_;
4960 ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
4961 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4963 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
4964 in_port_.ofp_port = OFPP_NONE;
4965 flow_extract(packet, 0, 0, NULL, &in_port_, &flow);
4966 odp_flow_key_from_flow(&key, &flow, ofp_port_to_odp_port(ofproto,
4968 dpif_flow_stats_extract(&flow, packet, time_msec(), &stats);
4970 ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
4971 output.port = ofport->up.ofp_port;
4974 xlate_in_init(&xin, ofproto, &flow, NULL, 0, packet);
4975 xin.ofpacts_len = sizeof output;
4976 xin.ofpacts = &output.ofpact;
4977 xin.resubmit_stats = &stats;
4978 xlate_actions(&xin, &xout);
4980 error = dpif_execute(ofproto->backer->dpif,
4982 xout.odp_actions.data, xout.odp_actions.size,
4984 xlate_out_uninit(&xout);
4987 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %s (%s)",
4988 ofproto->up.name, netdev_get_name(ofport->up.netdev),
4989 ovs_strerror(error));
4992 ofproto->stats.tx_packets++;
4993 ofproto->stats.tx_bytes += packet->size;
4997 /* Composes an ODP action for a "slow path" action for 'flow' within 'ofproto'.
4998 * The action will state 'slow' as the reason that the action is in the slow
4999 * path. (This is purely informational: it allows a human viewing "ovs-dpctl
5000 * dump-flows" output to see why a flow is in the slow path.)
5002 * The 'stub_size' bytes in 'stub' will be used to store the action.
5003 * 'stub_size' must be large enough for the action.
5005 * The action and its size will be stored in '*actionsp' and '*actions_lenp',
5008 compose_slow_path(const struct ofproto_dpif *ofproto, const struct flow *flow,
5009 enum slow_path_reason slow,
5010 uint64_t *stub, size_t stub_size,
5011 const struct nlattr **actionsp, size_t *actions_lenp)
5013 union user_action_cookie cookie;
5016 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
5017 cookie.slow_path.unused = 0;
5018 cookie.slow_path.reason = slow;
5020 ofpbuf_use_stack(&buf, stub, stub_size);
5021 if (slow & (SLOW_CFM | SLOW_BFD | SLOW_LACP | SLOW_STP)) {
5022 uint32_t pid = dpif_port_get_pid(ofproto->backer->dpif,
5024 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5026 odp_port_t odp_port;
5029 odp_port = ofp_port_to_odp_port(ofproto, flow->in_port.ofp_port);
5030 pid = dpif_port_get_pid(ofproto->backer->dpif, odp_port);
5031 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path, &buf);
5033 *actionsp = buf.data;
5034 *actions_lenp = buf.size;
5038 set_frag_handling(struct ofproto *ofproto_,
5039 enum ofp_config_flags frag_handling)
5041 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5042 if (frag_handling != OFPC_FRAG_REASM) {
5043 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5051 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5052 const struct flow *flow,
5053 const struct ofpact *ofpacts, size_t ofpacts_len)
5055 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5056 struct odputil_keybuf keybuf;
5057 struct dpif_flow_stats stats;
5058 struct xlate_out xout;
5059 struct xlate_in xin;
5063 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5064 odp_flow_key_from_flow(&key, flow,
5065 ofp_port_to_odp_port(ofproto,
5066 flow->in_port.ofp_port));
5068 dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
5070 xlate_in_init(&xin, ofproto, flow, NULL, stats.tcp_flags, packet);
5071 xin.resubmit_stats = &stats;
5072 xin.ofpacts_len = ofpacts_len;
5073 xin.ofpacts = ofpacts;
5075 xlate_actions(&xin, &xout);
5076 dpif_execute(ofproto->backer->dpif, key.data, key.size,
5077 xout.odp_actions.data, xout.odp_actions.size, packet);
5078 xlate_out_uninit(&xout);
5086 set_netflow(struct ofproto *ofproto_,
5087 const struct netflow_options *netflow_options)
5089 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5091 if (netflow_options) {
5092 if (!ofproto->netflow) {
5093 ofproto->netflow = netflow_create();
5094 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5096 return netflow_set_options(ofproto->netflow, netflow_options);
5097 } else if (ofproto->netflow) {
5098 ofproto->backer->need_revalidate = REV_RECONFIGURE;
5099 netflow_destroy(ofproto->netflow);
5100 ofproto->netflow = NULL;
5107 get_netflow_ids(const struct ofproto *ofproto_,
5108 uint8_t *engine_type, uint8_t *engine_id)
5110 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5112 dpif_get_netflow_ids(ofproto->backer->dpif, engine_type, engine_id);
5116 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5118 if (!facet_is_controller_flow(facet) &&
5119 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5120 struct subfacet *subfacet;
5121 struct ofexpired expired;
5123 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5124 if (subfacet->path == SF_FAST_PATH) {
5125 struct dpif_flow_stats stats;
5127 subfacet_install(subfacet, &facet->xout.odp_actions,
5129 subfacet_update_stats(subfacet, &stats);
5133 expired.flow = facet->flow;
5134 expired.packet_count = facet->packet_count;
5135 expired.byte_count = facet->byte_count;
5136 expired.used = facet->used;
5137 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5142 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5144 struct cls_cursor cursor;
5145 struct facet *facet;
5147 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5148 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5149 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5150 send_active_timeout(ofproto, facet);
5152 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5155 static struct ofproto_dpif *
5156 ofproto_dpif_lookup(const char *name)
5158 struct ofproto_dpif *ofproto;
5160 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5161 hash_string(name, 0), &all_ofproto_dpifs) {
5162 if (!strcmp(ofproto->up.name, name)) {
5170 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5171 const char *argv[], void *aux OVS_UNUSED)
5173 struct ofproto_dpif *ofproto;
5176 ofproto = ofproto_dpif_lookup(argv[1]);
5178 unixctl_command_reply_error(conn, "no such bridge");
5181 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5182 mac_learning_flush(ofproto->ml);
5183 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5185 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5186 ovs_rwlock_wrlock(&ofproto->ml->rwlock);
5187 mac_learning_flush(ofproto->ml);
5188 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5192 unixctl_command_reply(conn, "table successfully flushed");
5195 static struct ofport_dpif *
5196 ofbundle_get_a_port(const struct ofbundle *bundle)
5198 return CONTAINER_OF(list_front(&bundle->ports), struct ofport_dpif,
5203 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5204 const char *argv[], void *aux OVS_UNUSED)
5206 struct ds ds = DS_EMPTY_INITIALIZER;
5207 const struct ofproto_dpif *ofproto;
5208 const struct mac_entry *e;
5210 ofproto = ofproto_dpif_lookup(argv[1]);
5212 unixctl_command_reply_error(conn, "no such bridge");
5216 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5217 ovs_rwlock_rdlock(&ofproto->ml->rwlock);
5218 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5219 struct ofbundle *bundle = e->port.p;
5220 char name[OFP_MAX_PORT_NAME_LEN];
5222 ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
5224 ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" %3d\n",
5225 name, e->vlan, ETH_ADDR_ARGS(e->mac),
5226 mac_entry_age(ofproto->ml, e));
5228 ovs_rwlock_unlock(&ofproto->ml->rwlock);
5229 unixctl_command_reply(conn, ds_cstr(&ds));
5234 struct xlate_out xout;
5235 struct xlate_in xin;
5241 trace_format_rule(struct ds *result, int level, const struct rule_dpif *rule)
5243 ds_put_char_multiple(result, '\t', level);
5245 ds_put_cstr(result, "No match\n");
5249 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5250 rule ? rule->up.table_id : 0, ntohll(rule->up.flow_cookie));
5251 cls_rule_format(&rule->up.cr, result);
5252 ds_put_char(result, '\n');
5254 ds_put_char_multiple(result, '\t', level);
5255 ds_put_cstr(result, "OpenFlow ");
5256 ofpacts_format(rule->up.ofpacts, rule->up.ofpacts_len, result);
5257 ds_put_char(result, '\n');
5261 trace_format_flow(struct ds *result, int level, const char *title,
5262 struct trace_ctx *trace)
5264 ds_put_char_multiple(result, '\t', level);
5265 ds_put_format(result, "%s: ", title);
5266 if (flow_equal(&trace->xin.flow, &trace->flow)) {
5267 ds_put_cstr(result, "unchanged");
5269 flow_format(result, &trace->xin.flow);
5270 trace->flow = trace->xin.flow;
5272 ds_put_char(result, '\n');
5276 trace_format_regs(struct ds *result, int level, const char *title,
5277 struct trace_ctx *trace)
5281 ds_put_char_multiple(result, '\t', level);
5282 ds_put_format(result, "%s:", title);
5283 for (i = 0; i < FLOW_N_REGS; i++) {
5284 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
5286 ds_put_char(result, '\n');
5290 trace_format_odp(struct ds *result, int level, const char *title,
5291 struct trace_ctx *trace)
5293 struct ofpbuf *odp_actions = &trace->xout.odp_actions;
5295 ds_put_char_multiple(result, '\t', level);
5296 ds_put_format(result, "%s: ", title);
5297 format_odp_actions(result, odp_actions->data, odp_actions->size);
5298 ds_put_char(result, '\n');
5302 trace_resubmit(struct xlate_in *xin, struct rule_dpif *rule, int recurse)
5304 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5305 struct ds *result = trace->result;
5307 ds_put_char(result, '\n');
5308 trace_format_flow(result, recurse + 1, "Resubmitted flow", trace);
5309 trace_format_regs(result, recurse + 1, "Resubmitted regs", trace);
5310 trace_format_odp(result, recurse + 1, "Resubmitted odp", trace);
5311 trace_format_rule(result, recurse + 1, rule);
5315 trace_report(struct xlate_in *xin, const char *s, int recurse)
5317 struct trace_ctx *trace = CONTAINER_OF(xin, struct trace_ctx, xin);
5318 struct ds *result = trace->result;
5320 ds_put_char_multiple(result, '\t', recurse);
5321 ds_put_cstr(result, s);
5322 ds_put_char(result, '\n');
5326 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
5327 void *aux OVS_UNUSED)
5329 const struct dpif_backer *backer;
5330 struct ofproto_dpif *ofproto;
5331 struct ofpbuf odp_key, odp_mask;
5332 struct ofpbuf *packet;
5340 ofpbuf_init(&odp_key, 0);
5341 ofpbuf_init(&odp_mask, 0);
5343 /* Handle "-generate" or a hex string as the last argument. */
5344 if (!strcmp(argv[argc - 1], "-generate")) {
5345 packet = ofpbuf_new(0);
5348 const char *error = eth_from_hex(argv[argc - 1], &packet);
5351 } else if (argc == 4) {
5352 /* The 3-argument form must end in "-generate' or a hex string. */
5353 unixctl_command_reply_error(conn, error);
5358 /* Parse the flow and determine whether a datapath or
5359 * bridge is specified. If function odp_flow_key_from_string()
5360 * returns 0, the flow is a odp_flow. If function
5361 * parse_ofp_exact_flow() returns 0, the flow is a br_flow. */
5362 if (!odp_flow_from_string(argv[argc - 1], NULL, &odp_key, &odp_mask)) {
5363 /* If the odp_flow is the second argument,
5364 * the datapath name is the first argument. */
5366 const char *dp_type;
5367 if (!strncmp(argv[1], "ovs-", 4)) {
5368 dp_type = argv[1] + 4;
5372 backer = shash_find_data(&all_dpif_backers, dp_type);
5374 unixctl_command_reply_error(conn, "Cannot find datapath "
5379 /* No datapath name specified, so there should be only one
5381 struct shash_node *node;
5382 if (shash_count(&all_dpif_backers) != 1) {
5383 unixctl_command_reply_error(conn, "Must specify datapath "
5384 "name, there is more than one type of datapath");
5387 node = shash_first(&all_dpif_backers);
5388 backer = node->data;
5391 if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, &flow,
5392 NULL, &ofproto, NULL)) {
5393 unixctl_command_reply_error(conn, "Invalid datapath flow");
5396 ds_put_format(&result, "Bridge: %s\n", ofproto->up.name);
5397 } else if (!parse_ofp_exact_flow(&flow, argv[argc - 1])) {
5399 unixctl_command_reply_error(conn, "Must specify bridge name");
5403 ofproto = ofproto_dpif_lookup(argv[1]);
5405 unixctl_command_reply_error(conn, "Unknown bridge name");
5409 unixctl_command_reply_error(conn, "Bad flow syntax");
5413 /* Generate a packet, if requested. */
5415 if (!packet->size) {
5416 flow_compose(packet, &flow);
5418 union flow_in_port in_port_;
5420 in_port_ = flow.in_port;
5421 ds_put_cstr(&result, "Packet: ");
5422 s = ofp_packet_to_string(packet->data, packet->size);
5423 ds_put_cstr(&result, s);
5426 /* Use the metadata from the flow and the packet argument
5427 * to reconstruct the flow. */
5428 flow_extract(packet, flow.skb_priority, flow.pkt_mark, NULL,
5433 ofproto_trace(ofproto, &flow, packet, &result);
5434 unixctl_command_reply(conn, ds_cstr(&result));
5437 ds_destroy(&result);
5438 ofpbuf_delete(packet);
5439 ofpbuf_uninit(&odp_key);
5440 ofpbuf_uninit(&odp_mask);
5444 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
5445 const struct ofpbuf *packet, struct ds *ds)
5447 struct rule_dpif *rule;
5448 struct flow_wildcards wc;
5450 ds_put_cstr(ds, "Flow: ");
5451 flow_format(ds, flow);
5452 ds_put_char(ds, '\n');
5454 flow_wildcards_init_catchall(&wc);
5455 rule_dpif_lookup(ofproto, flow, &wc, &rule);
5457 trace_format_rule(ds, 0, rule);
5458 if (rule == ofproto->miss_rule) {
5459 ds_put_cstr(ds, "\nNo match, flow generates \"packet in\"s.\n");
5460 } else if (rule == ofproto->no_packet_in_rule) {
5461 ds_put_cstr(ds, "\nNo match, packets dropped because "
5462 "OFPPC_NO_PACKET_IN is set on in_port.\n");
5463 } else if (rule == ofproto->drop_frags_rule) {
5464 ds_put_cstr(ds, "\nPackets dropped because they are IP fragments "
5465 "and the fragment handling mode is \"drop\".\n");
5469 uint64_t odp_actions_stub[1024 / 8];
5470 struct ofpbuf odp_actions;
5471 struct trace_ctx trace;
5475 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
5478 ofpbuf_use_stub(&odp_actions,
5479 odp_actions_stub, sizeof odp_actions_stub);
5480 xlate_in_init(&trace.xin, ofproto, flow, rule, tcp_flags, packet);
5481 trace.xin.resubmit_hook = trace_resubmit;
5482 trace.xin.report_hook = trace_report;
5484 xlate_actions(&trace.xin, &trace.xout);
5485 flow_wildcards_or(&trace.xout.wc, &trace.xout.wc, &wc);
5487 ds_put_char(ds, '\n');
5488 trace_format_flow(ds, 0, "Final flow", &trace);
5490 match_init(&match, flow, &trace.xout.wc);
5491 ds_put_cstr(ds, "Relevant fields: ");
5492 match_format(&match, ds, OFP_DEFAULT_PRIORITY);
5493 ds_put_char(ds, '\n');
5495 ds_put_cstr(ds, "Datapath actions: ");
5496 format_odp_actions(ds, trace.xout.odp_actions.data,
5497 trace.xout.odp_actions.size);
5499 if (trace.xout.slow) {
5500 ds_put_cstr(ds, "\nThis flow is handled by the userspace "
5501 "slow path because it:");
5502 switch (trace.xout.slow) {
5504 ds_put_cstr(ds, "\n\t- Consists of CFM packets.");
5507 ds_put_cstr(ds, "\n\t- Consists of LACP packets.");
5510 ds_put_cstr(ds, "\n\t- Consists of STP packets.");
5513 ds_put_cstr(ds, "\n\t- Consists of BFD packets.");
5515 case SLOW_CONTROLLER:
5516 ds_put_cstr(ds, "\n\t- Sends \"packet-in\" messages "
5517 "to the OpenFlow controller.");
5524 xlate_out_uninit(&trace.xout);
5531 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5532 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5535 unixctl_command_reply(conn, NULL);
5539 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
5540 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5543 unixctl_command_reply(conn, NULL);
5546 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
5547 * 'reply' describing the results. */
5549 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
5551 struct cls_cursor cursor;
5552 struct facet *facet;
5556 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5557 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5558 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5559 if (!facet_check_consistency(facet)) {
5563 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5565 ofproto->backer->need_revalidate = REV_INCONSISTENCY;
5569 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
5570 ofproto->up.name, errors);
5572 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
5577 ofproto_dpif_self_check(struct unixctl_conn *conn,
5578 int argc, const char *argv[], void *aux OVS_UNUSED)
5580 struct ds reply = DS_EMPTY_INITIALIZER;
5581 struct ofproto_dpif *ofproto;
5584 ofproto = ofproto_dpif_lookup(argv[1]);
5586 unixctl_command_reply_error(conn, "Unknown ofproto (use "
5587 "ofproto/list for help)");
5590 ofproto_dpif_self_check__(ofproto, &reply);
5592 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5593 ofproto_dpif_self_check__(ofproto, &reply);
5597 unixctl_command_reply(conn, ds_cstr(&reply));
5601 /* Store the current ofprotos in 'ofproto_shash'. Returns a sorted list
5602 * of the 'ofproto_shash' nodes. It is the responsibility of the caller
5603 * to destroy 'ofproto_shash' and free the returned value. */
5604 static const struct shash_node **
5605 get_ofprotos(struct shash *ofproto_shash)
5607 const struct ofproto_dpif *ofproto;
5609 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5610 char *name = xasprintf("%s@%s", ofproto->up.type, ofproto->up.name);
5611 shash_add_nocopy(ofproto_shash, name, ofproto);
5614 return shash_sort(ofproto_shash);
5618 ofproto_unixctl_dpif_dump_dps(struct unixctl_conn *conn, int argc OVS_UNUSED,
5619 const char *argv[] OVS_UNUSED,
5620 void *aux OVS_UNUSED)
5622 struct ds ds = DS_EMPTY_INITIALIZER;
5623 struct shash ofproto_shash;
5624 const struct shash_node **sorted_ofprotos;
5627 shash_init(&ofproto_shash);
5628 sorted_ofprotos = get_ofprotos(&ofproto_shash);
5629 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5630 const struct shash_node *node = sorted_ofprotos[i];
5631 ds_put_format(&ds, "%s\n", node->name);
5634 shash_destroy(&ofproto_shash);
5635 free(sorted_ofprotos);
5637 unixctl_command_reply(conn, ds_cstr(&ds));
5642 show_dp_rates(struct ds *ds, const char *heading,
5643 const struct avg_subfacet_rates *rates)
5645 ds_put_format(ds, "%s add rate: %5.3f/min, del rate: %5.3f/min\n",
5646 heading, rates->add_rate, rates->del_rate);
5650 dpif_show_backer(const struct dpif_backer *backer, struct ds *ds)
5652 const struct shash_node **ofprotos;
5653 struct ofproto_dpif *ofproto;
5654 struct shash ofproto_shash;
5655 uint64_t n_hit, n_missed;
5656 long long int minutes;
5659 n_hit = n_missed = 0;
5660 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5661 if (ofproto->backer == backer) {
5662 n_missed += ofproto->n_missed;
5663 n_hit += ofproto->n_hit;
5667 ds_put_format(ds, "%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5668 dpif_name(backer->dpif), n_hit, n_missed);
5669 ds_put_format(ds, "\tflows: cur: %zu, avg: %u, max: %u,"
5670 " life span: %lldms\n", hmap_count(&backer->subfacets),
5671 backer->avg_n_subfacet, backer->max_n_subfacet,
5672 backer->avg_subfacet_life);
5674 minutes = (time_msec() - backer->created) / (1000 * 60);
5675 if (minutes >= 60) {
5676 show_dp_rates(ds, "\thourly avg:", &backer->hourly);
5678 if (minutes >= 60 * 24) {
5679 show_dp_rates(ds, "\tdaily avg:", &backer->daily);
5681 show_dp_rates(ds, "\toverall avg:", &backer->lifetime);
5683 shash_init(&ofproto_shash);
5684 ofprotos = get_ofprotos(&ofproto_shash);
5685 for (i = 0; i < shash_count(&ofproto_shash); i++) {
5686 struct ofproto_dpif *ofproto = ofprotos[i]->data;
5687 const struct shash_node **ports;
5690 if (ofproto->backer != backer) {
5694 ds_put_format(ds, "\t%s: hit:%"PRIu64" missed:%"PRIu64"\n",
5695 ofproto->up.name, ofproto->n_hit, ofproto->n_missed);
5697 ports = shash_sort(&ofproto->up.port_by_name);
5698 for (j = 0; j < shash_count(&ofproto->up.port_by_name); j++) {
5699 const struct shash_node *node = ports[j];
5700 struct ofport *ofport = node->data;
5702 odp_port_t odp_port;
5704 ds_put_format(ds, "\t\t%s %u/", netdev_get_name(ofport->netdev),
5707 odp_port = ofp_port_to_odp_port(ofproto, ofport->ofp_port);
5708 if (odp_port != ODPP_NONE) {
5709 ds_put_format(ds, "%"PRIu32":", odp_port);
5711 ds_put_cstr(ds, "none:");
5714 ds_put_format(ds, " (%s", netdev_get_type(ofport->netdev));
5717 if (!netdev_get_config(ofport->netdev, &config)) {
5718 const struct smap_node **nodes;
5721 nodes = smap_sort(&config);
5722 for (i = 0; i < smap_count(&config); i++) {
5723 const struct smap_node *node = nodes[i];
5724 ds_put_format(ds, "%c %s=%s", i ? ',' : ':',
5725 node->key, node->value);
5729 smap_destroy(&config);
5731 ds_put_char(ds, ')');
5732 ds_put_char(ds, '\n');
5736 shash_destroy(&ofproto_shash);
5741 ofproto_unixctl_dpif_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5742 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
5744 struct ds ds = DS_EMPTY_INITIALIZER;
5745 const struct shash_node **backers;
5748 backers = shash_sort(&all_dpif_backers);
5749 for (i = 0; i < shash_count(&all_dpif_backers); i++) {
5750 dpif_show_backer(backers[i]->data, &ds);
5754 unixctl_command_reply(conn, ds_cstr(&ds));
5758 /* Dump the megaflow (facet) cache. This is useful to check the
5759 * correctness of flow wildcarding, since the same mechanism is used for
5760 * both xlate caching and kernel wildcarding.
5762 * It's important to note that in the output the flow description uses
5763 * OpenFlow (OFP) ports, but the actions use datapath (ODP) ports.
5765 * This command is only needed for advanced debugging, so it's not
5766 * documented in the man page. */
5768 ofproto_unixctl_dpif_dump_megaflows(struct unixctl_conn *conn,
5769 int argc OVS_UNUSED, const char *argv[],
5770 void *aux OVS_UNUSED)
5772 struct ds ds = DS_EMPTY_INITIALIZER;
5773 const struct ofproto_dpif *ofproto;
5774 long long int now = time_msec();
5775 struct cls_cursor cursor;
5776 struct facet *facet;
5778 ofproto = ofproto_dpif_lookup(argv[1]);
5780 unixctl_command_reply_error(conn, "no such bridge");
5784 ovs_rwlock_rdlock(&ofproto->facets.rwlock);
5785 cls_cursor_init(&cursor, &ofproto->facets, NULL);
5786 CLS_CURSOR_FOR_EACH (facet, cr, &cursor) {
5787 cls_rule_format(&facet->cr, &ds);
5788 ds_put_cstr(&ds, ", ");
5789 ds_put_format(&ds, "n_subfacets:%zu, ", list_size(&facet->subfacets));
5790 ds_put_format(&ds, "used:%.3fs, ", (now - facet->used) / 1000.0);
5791 ds_put_cstr(&ds, "Datapath actions: ");
5792 if (facet->xout.slow) {
5793 uint64_t slow_path_stub[128 / 8];
5794 const struct nlattr *actions;
5797 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
5798 slow_path_stub, sizeof slow_path_stub,
5799 &actions, &actions_len);
5800 format_odp_actions(&ds, actions, actions_len);
5802 format_odp_actions(&ds, facet->xout.odp_actions.data,
5803 facet->xout.odp_actions.size);
5805 ds_put_cstr(&ds, "\n");
5807 ovs_rwlock_unlock(&ofproto->facets.rwlock);
5809 ds_chomp(&ds, '\n');
5810 unixctl_command_reply(conn, ds_cstr(&ds));
5814 /* Disable using the megaflows.
5816 * This command is only needed for advanced debugging, so it's not
5817 * documented in the man page. */
5819 ofproto_unixctl_dpif_disable_megaflows(struct unixctl_conn *conn,
5820 int argc OVS_UNUSED,
5821 const char *argv[] OVS_UNUSED,
5822 void *aux OVS_UNUSED)
5824 struct ofproto_dpif *ofproto;
5826 enable_megaflows = false;
5828 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5829 flush(&ofproto->up);
5832 unixctl_command_reply(conn, "megaflows disabled");
5835 /* Re-enable using megaflows.
5837 * This command is only needed for advanced debugging, so it's not
5838 * documented in the man page. */
5840 ofproto_unixctl_dpif_enable_megaflows(struct unixctl_conn *conn,
5841 int argc OVS_UNUSED,
5842 const char *argv[] OVS_UNUSED,
5843 void *aux OVS_UNUSED)
5845 struct ofproto_dpif *ofproto;
5847 enable_megaflows = true;
5849 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5850 flush(&ofproto->up);
5853 unixctl_command_reply(conn, "megaflows enabled");
5857 ofproto_unixctl_dpif_dump_flows(struct unixctl_conn *conn,
5858 int argc OVS_UNUSED, const char *argv[],
5859 void *aux OVS_UNUSED)
5861 struct ds ds = DS_EMPTY_INITIALIZER;
5862 const struct ofproto_dpif *ofproto;
5863 struct subfacet *subfacet;
5865 ofproto = ofproto_dpif_lookup(argv[1]);
5867 unixctl_command_reply_error(conn, "no such bridge");
5871 update_stats(ofproto->backer);
5873 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->backer->subfacets) {
5874 struct facet *facet = subfacet->facet;
5875 struct odputil_keybuf maskbuf;
5878 if (facet->ofproto != ofproto) {
5882 ofpbuf_use_stack(&mask, &maskbuf, sizeof maskbuf);
5883 if (enable_megaflows) {
5884 odp_flow_key_from_mask(&mask, &facet->xout.wc.masks,
5885 &facet->flow, UINT32_MAX);
5888 odp_flow_format(subfacet->key, subfacet->key_len,
5889 mask.data, mask.size, &ds, false);
5891 ds_put_format(&ds, ", packets:%"PRIu64", bytes:%"PRIu64", used:",
5892 subfacet->dp_packet_count, subfacet->dp_byte_count);
5893 if (subfacet->used) {
5894 ds_put_format(&ds, "%.3fs",
5895 (time_msec() - subfacet->used) / 1000.0);
5897 ds_put_format(&ds, "never");
5899 if (subfacet->facet->tcp_flags) {
5900 ds_put_cstr(&ds, ", flags:");
5901 packet_format_tcp_flags(&ds, subfacet->facet->tcp_flags);
5904 ds_put_cstr(&ds, ", actions:");
5905 if (facet->xout.slow) {
5906 uint64_t slow_path_stub[128 / 8];
5907 const struct nlattr *actions;
5910 compose_slow_path(ofproto, &facet->flow, facet->xout.slow,
5911 slow_path_stub, sizeof slow_path_stub,
5912 &actions, &actions_len);
5913 format_odp_actions(&ds, actions, actions_len);
5915 format_odp_actions(&ds, facet->xout.odp_actions.data,
5916 facet->xout.odp_actions.size);
5918 ds_put_char(&ds, '\n');
5921 unixctl_command_reply(conn, ds_cstr(&ds));
5926 ofproto_unixctl_dpif_del_flows(struct unixctl_conn *conn,
5927 int argc OVS_UNUSED, const char *argv[],
5928 void *aux OVS_UNUSED)
5930 struct ds ds = DS_EMPTY_INITIALIZER;
5931 struct ofproto_dpif *ofproto;
5933 ofproto = ofproto_dpif_lookup(argv[1]);
5935 unixctl_command_reply_error(conn, "no such bridge");
5939 flush(&ofproto->up);
5941 unixctl_command_reply(conn, ds_cstr(&ds));
5946 ofproto_dpif_unixctl_init(void)
5948 static bool registered;
5954 unixctl_command_register(
5956 "[dp_name]|bridge odp_flow|br_flow [-generate|packet]",
5957 1, 3, ofproto_unixctl_trace, NULL);
5958 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
5959 ofproto_unixctl_fdb_flush, NULL);
5960 unixctl_command_register("fdb/show", "bridge", 1, 1,
5961 ofproto_unixctl_fdb_show, NULL);
5962 unixctl_command_register("ofproto/clog", "", 0, 0,
5963 ofproto_dpif_clog, NULL);
5964 unixctl_command_register("ofproto/unclog", "", 0, 0,
5965 ofproto_dpif_unclog, NULL);
5966 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
5967 ofproto_dpif_self_check, NULL);
5968 unixctl_command_register("dpif/dump-dps", "", 0, 0,
5969 ofproto_unixctl_dpif_dump_dps, NULL);
5970 unixctl_command_register("dpif/show", "", 0, 0, ofproto_unixctl_dpif_show,
5972 unixctl_command_register("dpif/dump-flows", "bridge", 1, 1,
5973 ofproto_unixctl_dpif_dump_flows, NULL);
5974 unixctl_command_register("dpif/del-flows", "bridge", 1, 1,
5975 ofproto_unixctl_dpif_del_flows, NULL);
5976 unixctl_command_register("dpif/dump-megaflows", "bridge", 1, 1,
5977 ofproto_unixctl_dpif_dump_megaflows, NULL);
5978 unixctl_command_register("dpif/disable-megaflows", "", 0, 0,
5979 ofproto_unixctl_dpif_disable_megaflows, NULL);
5980 unixctl_command_register("dpif/enable-megaflows", "", 0, 0,
5981 ofproto_unixctl_dpif_enable_megaflows, NULL);
5984 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
5986 * This is deprecated. It is only for compatibility with broken device drivers
5987 * in old versions of Linux that do not properly support VLANs when VLAN
5988 * devices are not used. When broken device drivers are no longer in
5989 * widespread use, we will delete these interfaces. */
5992 set_realdev(struct ofport *ofport_, ofp_port_t realdev_ofp_port, int vid)
5994 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
5995 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
5997 if (realdev_ofp_port == ofport->realdev_ofp_port
5998 && vid == ofport->vlandev_vid) {
6002 ofproto->backer->need_revalidate = REV_RECONFIGURE;
6004 if (ofport->realdev_ofp_port) {
6007 if (realdev_ofp_port && ofport->bundle) {
6008 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6009 * themselves be part of a bundle. */
6010 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6013 ofport->realdev_ofp_port = realdev_ofp_port;
6014 ofport->vlandev_vid = vid;
6016 if (realdev_ofp_port) {
6017 vsp_add(ofport, realdev_ofp_port, vid);
6024 hash_realdev_vid(ofp_port_t realdev_ofp_port, int vid)
6026 return hash_2words(ofp_to_u16(realdev_ofp_port), vid);
6030 ofproto_has_vlan_splinters(const struct ofproto_dpif *ofproto)
6031 OVS_EXCLUDED(ofproto->vsp_mutex)
6035 ovs_mutex_lock(&ofproto->vsp_mutex);
6036 ret = !hmap_is_empty(&ofproto->realdev_vid_map);
6037 ovs_mutex_unlock(&ofproto->vsp_mutex);
6042 vsp_realdev_to_vlandev__(const struct ofproto_dpif *ofproto,
6043 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6044 OVS_REQUIRES(ofproto->vsp_mutex)
6046 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6047 int vid = vlan_tci_to_vid(vlan_tci);
6048 const struct vlan_splinter *vsp;
6050 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6051 hash_realdev_vid(realdev_ofp_port, vid),
6052 &ofproto->realdev_vid_map) {
6053 if (vsp->realdev_ofp_port == realdev_ofp_port
6054 && vsp->vid == vid) {
6055 return vsp->vlandev_ofp_port;
6059 return realdev_ofp_port;
6062 /* Returns the OFP port number of the Linux VLAN device that corresponds to
6063 * 'vlan_tci' on the network device with port number 'realdev_ofp_port' in
6064 * 'struct ofport_dpif'. For example, given 'realdev_ofp_port' of eth0 and
6065 * 'vlan_tci' 9, it would return the port number of eth0.9.
6067 * Unless VLAN splinters are enabled for port 'realdev_ofp_port', this
6068 * function just returns its 'realdev_ofp_port' argument. */
6070 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6071 ofp_port_t realdev_ofp_port, ovs_be16 vlan_tci)
6072 OVS_EXCLUDED(ofproto->vsp_mutex)
6076 ovs_mutex_lock(&ofproto->vsp_mutex);
6077 ret = vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, vlan_tci);
6078 ovs_mutex_unlock(&ofproto->vsp_mutex);
6082 static struct vlan_splinter *
6083 vlandev_find(const struct ofproto_dpif *ofproto, ofp_port_t vlandev_ofp_port)
6085 struct vlan_splinter *vsp;
6087 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node,
6088 hash_ofp_port(vlandev_ofp_port),
6089 &ofproto->vlandev_map) {
6090 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6098 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6099 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6100 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6101 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6102 * eth0 and store 9 in '*vid'.
6104 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6105 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6108 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6109 ofp_port_t vlandev_ofp_port, int *vid)
6110 OVS_REQUIRES(ofproto->vsp_mutex)
6112 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6113 const struct vlan_splinter *vsp;
6115 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6120 return vsp->realdev_ofp_port;
6126 /* Given 'flow', a flow representing a packet received on 'ofproto', checks
6127 * whether 'flow->in_port' represents a Linux VLAN device. If so, changes
6128 * 'flow->in_port' to the "real" device backing the VLAN device, sets
6129 * 'flow->vlan_tci' to the VLAN VID, and returns true. Otherwise (which is
6130 * always the case unless VLAN splinters are enabled), returns false without
6131 * making any changes. */
6133 vsp_adjust_flow(const struct ofproto_dpif *ofproto, struct flow *flow)
6134 OVS_EXCLUDED(ofproto->vsp_mutex)
6139 ovs_mutex_lock(&ofproto->vsp_mutex);
6140 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port.ofp_port, &vid);
6141 ovs_mutex_unlock(&ofproto->vsp_mutex);
6146 /* Cause the flow to be processed as if it came in on the real device with
6147 * the VLAN device's VLAN ID. */
6148 flow->in_port.ofp_port = realdev;
6149 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
6154 vsp_remove(struct ofport_dpif *port)
6156 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6157 struct vlan_splinter *vsp;
6159 ovs_mutex_lock(&ofproto->vsp_mutex);
6160 vsp = vlandev_find(ofproto, port->up.ofp_port);
6162 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6163 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6166 port->realdev_ofp_port = 0;
6168 VLOG_ERR("missing vlan device record");
6170 ovs_mutex_unlock(&ofproto->vsp_mutex);
6174 vsp_add(struct ofport_dpif *port, ofp_port_t realdev_ofp_port, int vid)
6176 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6178 ovs_mutex_lock(&ofproto->vsp_mutex);
6179 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6180 && (vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, htons(vid))
6181 == realdev_ofp_port)) {
6182 struct vlan_splinter *vsp;
6184 vsp = xmalloc(sizeof *vsp);
6185 vsp->realdev_ofp_port = realdev_ofp_port;
6186 vsp->vlandev_ofp_port = port->up.ofp_port;
6189 port->realdev_ofp_port = realdev_ofp_port;
6191 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6192 hash_ofp_port(port->up.ofp_port));
6193 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6194 hash_realdev_vid(realdev_ofp_port, vid));
6196 VLOG_ERR("duplicate vlan device record");
6198 ovs_mutex_unlock(&ofproto->vsp_mutex);
6202 ofp_port_to_odp_port(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
6204 const struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
6205 return ofport ? ofport->odp_port : ODPP_NONE;
6208 struct ofport_dpif *
6209 odp_port_to_ofport(const struct dpif_backer *backer, odp_port_t odp_port)
6211 struct ofport_dpif *port;
6213 ovs_rwlock_rdlock(&backer->odp_to_ofport_lock);
6214 HMAP_FOR_EACH_IN_BUCKET (port, odp_port_node, hash_odp_port(odp_port),
6215 &backer->odp_to_ofport_map) {
6216 if (port->odp_port == odp_port) {
6217 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6222 ovs_rwlock_unlock(&backer->odp_to_ofport_lock);
6227 odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, odp_port_t odp_port)
6229 struct ofport_dpif *port;
6231 port = odp_port_to_ofport(ofproto->backer, odp_port);
6232 if (port && &ofproto->up == port->up.ofproto) {
6233 return port->up.ofp_port;
6239 /* Compute exponentially weighted moving average, adding 'new' as the newest,
6240 * most heavily weighted element. 'base' designates the rate of decay: after
6241 * 'base' further updates, 'new''s weight in the EWMA decays to about 1/e
6244 exp_mavg(double *avg, int base, double new)
6246 *avg = (*avg * (base - 1) + new) / base;
6250 update_moving_averages(struct dpif_backer *backer)
6252 const int min_ms = 60 * 1000; /* milliseconds in one minute. */
6253 long long int minutes = (time_msec() - backer->created) / min_ms;
6256 backer->lifetime.add_rate = (double) backer->total_subfacet_add_count
6258 backer->lifetime.del_rate = (double) backer->total_subfacet_del_count
6261 backer->lifetime.add_rate = 0.0;
6262 backer->lifetime.del_rate = 0.0;
6265 /* Update hourly averages on the minute boundaries. */
6266 if (time_msec() - backer->last_minute >= min_ms) {
6267 exp_mavg(&backer->hourly.add_rate, 60, backer->subfacet_add_count);
6268 exp_mavg(&backer->hourly.del_rate, 60, backer->subfacet_del_count);
6270 /* Update daily averages on the hour boundaries. */
6271 if ((backer->last_minute - backer->created) / min_ms % 60 == 59) {
6272 exp_mavg(&backer->daily.add_rate, 24, backer->hourly.add_rate);
6273 exp_mavg(&backer->daily.del_rate, 24, backer->hourly.del_rate);
6276 backer->total_subfacet_add_count += backer->subfacet_add_count;
6277 backer->total_subfacet_del_count += backer->subfacet_del_count;
6278 backer->subfacet_add_count = 0;
6279 backer->subfacet_del_count = 0;
6280 backer->last_minute += min_ms;
6284 const struct ofproto_class ofproto_dpif_class = {
6319 port_is_lacp_current,
6320 NULL, /* rule_choose_table */
6327 rule_modify_actions,
6341 get_stp_port_status,
6348 is_mirror_output_bundle,
6349 forward_bpdu_changed,
6350 set_mac_table_config,
6352 NULL, /* meter_get_features */
6353 NULL, /* meter_set */
6354 NULL, /* meter_get */
6355 NULL, /* meter_del */