2 * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
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-provider.h"
26 #include "byte-order.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
36 #include "mac-learning.h"
37 #include "meta-flow.h"
38 #include "multipath.h"
45 #include "ofp-print.h"
46 #include "ofproto-dpif-sflow.h"
47 #include "poll-loop.h"
49 #include "unaligned.h"
51 #include "vlan-bitmap.h"
54 VLOG_DEFINE_THIS_MODULE(ofproto_dpif);
56 COVERAGE_DEFINE(ofproto_dpif_ctlr_action);
57 COVERAGE_DEFINE(ofproto_dpif_expired);
58 COVERAGE_DEFINE(ofproto_dpif_no_packet_in);
59 COVERAGE_DEFINE(ofproto_dpif_xlate);
60 COVERAGE_DEFINE(facet_changed_rule);
61 COVERAGE_DEFINE(facet_invalidated);
62 COVERAGE_DEFINE(facet_revalidate);
63 COVERAGE_DEFINE(facet_unexpected);
65 /* Maximum depth of flow table recursion (due to resubmit actions) in a
66 * flow translation. */
67 #define MAX_RESUBMIT_RECURSION 32
69 /* Number of implemented OpenFlow tables. */
70 enum { N_TABLES = 255 };
71 BUILD_ASSERT_DECL(N_TABLES >= 1 && N_TABLES <= 255);
81 * - Do include packets and bytes from facets that have been deleted or
82 * whose own statistics have been folded into the rule.
84 * - Do include packets and bytes sent "by hand" that were accounted to
85 * the rule without any facet being involved (this is a rare corner
86 * case in rule_execute()).
88 * - Do not include packet or bytes that can be obtained from any facet's
89 * packet_count or byte_count member or that can be obtained from the
90 * datapath by, e.g., dpif_flow_get() for any subfacet.
92 uint64_t packet_count; /* Number of packets received. */
93 uint64_t byte_count; /* Number of bytes received. */
95 tag_type tag; /* Caches rule_calculate_tag() result. */
97 struct list facets; /* List of "struct facet"s. */
100 static struct rule_dpif *rule_dpif_cast(const struct rule *rule)
102 return rule ? CONTAINER_OF(rule, struct rule_dpif, up) : NULL;
105 static struct rule_dpif *rule_dpif_lookup(struct ofproto_dpif *,
106 const struct flow *, uint8_t table);
108 static void flow_push_stats(struct rule_dpif *, const struct flow *,
109 uint64_t packets, uint64_t bytes,
112 static uint32_t rule_calculate_tag(const struct flow *,
113 const struct flow_wildcards *,
115 static void rule_invalidate(const struct rule_dpif *);
117 #define MAX_MIRRORS 32
118 typedef uint32_t mirror_mask_t;
119 #define MIRROR_MASK_C(X) UINT32_C(X)
120 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
122 struct ofproto_dpif *ofproto; /* Owning ofproto. */
123 size_t idx; /* In ofproto's "mirrors" array. */
124 void *aux; /* Key supplied by ofproto's client. */
125 char *name; /* Identifier for log messages. */
127 /* Selection criteria. */
128 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
129 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
130 unsigned long *vlans; /* Bitmap of chosen VLANs, NULL selects all. */
132 /* Output (exactly one of out == NULL and out_vlan == -1 is true). */
133 struct ofbundle *out; /* Output port or NULL. */
134 int out_vlan; /* Output VLAN or -1. */
135 mirror_mask_t dup_mirrors; /* Bitmap of mirrors with the same output. */
138 int64_t packet_count; /* Number of packets sent. */
139 int64_t byte_count; /* Number of bytes sent. */
142 static void mirror_destroy(struct ofmirror *);
143 static void update_mirror_stats(struct ofproto_dpif *ofproto,
144 mirror_mask_t mirrors,
145 uint64_t packets, uint64_t bytes);
148 struct ofproto_dpif *ofproto; /* Owning ofproto. */
149 struct hmap_node hmap_node; /* In struct ofproto's "bundles" hmap. */
150 void *aux; /* Key supplied by ofproto's client. */
151 char *name; /* Identifier for log messages. */
154 struct list ports; /* Contains "struct ofport"s. */
155 enum port_vlan_mode vlan_mode; /* VLAN mode */
156 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
157 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
158 * NULL if all VLANs are trunked. */
159 struct lacp *lacp; /* LACP if LACP is enabled, otherwise NULL. */
160 struct bond *bond; /* Nonnull iff more than one port. */
161 bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */
164 bool floodable; /* True if no port has OFPUTIL_PC_NO_FLOOD set. */
166 /* Port mirroring info. */
167 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
168 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
169 mirror_mask_t mirror_out; /* Mirrors that output to this bundle. */
172 static void bundle_remove(struct ofport *);
173 static void bundle_update(struct ofbundle *);
174 static void bundle_destroy(struct ofbundle *);
175 static void bundle_del_port(struct ofport_dpif *);
176 static void bundle_run(struct ofbundle *);
177 static void bundle_wait(struct ofbundle *);
178 static struct ofbundle *lookup_input_bundle(struct ofproto_dpif *,
179 uint16_t in_port, bool warn);
181 /* A controller may use OFPP_NONE as the ingress port to indicate that
182 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
183 * when an input bundle is needed for validation (e.g., mirroring or
184 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
185 * any 'port' structs, so care must be taken when dealing with it. */
186 static struct ofbundle ofpp_none_bundle = {
188 .vlan_mode = PORT_VLAN_TRUNK
191 static void stp_run(struct ofproto_dpif *ofproto);
192 static void stp_wait(struct ofproto_dpif *ofproto);
193 static int set_stp_port(struct ofport *,
194 const struct ofproto_port_stp_settings *);
196 static bool ofbundle_includes_vlan(const struct ofbundle *, uint16_t vlan);
198 struct action_xlate_ctx {
199 /* action_xlate_ctx_init() initializes these members. */
202 struct ofproto_dpif *ofproto;
204 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
205 * this flow when actions change header fields. */
208 /* The packet corresponding to 'flow', or a null pointer if we are
209 * revalidating without a packet to refer to. */
210 const struct ofpbuf *packet;
212 /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We
213 * want to execute them if we are actually processing a packet, or if we
214 * are accounting for packets that the datapath has processed, but not if
215 * we are just revalidating. */
218 /* The rule that we are currently translating, or NULL. */
219 struct rule_dpif *rule;
221 /* Union of the set of TCP flags seen so far in this flow. (Used only by
222 * NXAST_FIN_TIMEOUT. Set to zero to avoid updating updating rules'
226 /* If nonnull, called just before executing a resubmit action. In
227 * addition, disables logging of traces when the recursion depth is
230 * This is normally null so the client has to set it manually after
231 * calling action_xlate_ctx_init(). */
232 void (*resubmit_hook)(struct action_xlate_ctx *, struct rule_dpif *);
234 /* xlate_actions() initializes and uses these members. The client might want
235 * to look at them after it returns. */
237 struct ofpbuf *odp_actions; /* Datapath actions. */
238 tag_type tags; /* Tags associated with actions. */
239 bool may_set_up_flow; /* True ordinarily; false if the actions must
240 * be reassessed for every packet. */
241 bool has_learn; /* Actions include NXAST_LEARN? */
242 bool has_normal; /* Actions output to OFPP_NORMAL? */
243 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
244 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
245 mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
247 /* xlate_actions() initializes and uses these members, but the client has no
248 * reason to look at them. */
250 int recurse; /* Recursion level, via xlate_table_action. */
251 bool max_resubmit_trigger; /* Recursed too deeply during translation. */
252 struct flow base_flow; /* Flow at the last commit. */
253 uint32_t orig_skb_priority; /* Priority when packet arrived. */
254 uint8_t table_id; /* OpenFlow table ID where flow was found. */
255 uint32_t sflow_n_outputs; /* Number of output ports. */
256 uint16_t sflow_odp_port; /* Output port for composing sFlow action. */
257 uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
258 bool exit; /* No further actions should be processed. */
261 static void action_xlate_ctx_init(struct action_xlate_ctx *,
262 struct ofproto_dpif *, const struct flow *,
263 ovs_be16 initial_tci, struct rule_dpif *,
264 uint8_t tcp_flags, const struct ofpbuf *);
265 static struct ofpbuf *xlate_actions(struct action_xlate_ctx *,
266 const union ofp_action *in, size_t n_in);
268 /* An exact-match instantiation of an OpenFlow flow.
270 * A facet associates a "struct flow", which represents the Open vSwitch
271 * userspace idea of an exact-match flow, with one or more subfacets. Each
272 * subfacet tracks the datapath's idea of the exact-match flow equivalent to
273 * the facet. When the kernel module (or other dpif implementation) and Open
274 * vSwitch userspace agree on the definition of a flow key, there is exactly
275 * one subfacet per facet. If the dpif implementation supports more-specific
276 * flow matching than userspace, however, a facet can have more than one
277 * subfacet, each of which corresponds to some distinction in flow that
278 * userspace simply doesn't understand.
280 * Flow expiration works in terms of subfacets, so a facet must have at least
281 * one subfacet or it will never expire, leaking memory. */
284 struct hmap_node hmap_node; /* In owning ofproto's 'facets' hmap. */
285 struct list list_node; /* In owning rule's 'facets' list. */
286 struct rule_dpif *rule; /* Owning rule. */
289 struct list subfacets;
290 long long int used; /* Time last used; time created if not used. */
297 * - Do include packets and bytes sent "by hand", e.g. with
300 * - Do include packets and bytes that were obtained from the datapath
301 * when a subfacet's statistics were reset (e.g. dpif_flow_put() with
302 * DPIF_FP_ZERO_STATS).
304 * - Do not include packets or bytes that can be obtained from the
305 * datapath for any existing subfacet.
307 uint64_t packet_count; /* Number of packets received. */
308 uint64_t byte_count; /* Number of bytes received. */
310 /* Resubmit statistics. */
311 uint64_t prev_packet_count; /* Number of packets from last stats push. */
312 uint64_t prev_byte_count; /* Number of bytes from last stats push. */
313 long long int prev_used; /* Used time from last stats push. */
316 uint64_t accounted_bytes; /* Bytes processed by facet_account(). */
317 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
318 uint8_t tcp_flags; /* TCP flags seen for this 'rule'. */
320 /* Properties of datapath actions.
322 * Every subfacet has its own actions because actions can differ slightly
323 * between splintered and non-splintered subfacets due to the VLAN tag
324 * being initially different (present vs. absent). All of them have these
325 * properties in common so we just store one copy of them here. */
326 bool may_install; /* Reassess actions for every packet? */
327 bool has_learn; /* Actions include NXAST_LEARN? */
328 bool has_normal; /* Actions output to OFPP_NORMAL? */
329 bool has_fin_timeout; /* Actions include NXAST_FIN_TIMEOUT? */
330 tag_type tags; /* Tags that would require revalidation. */
331 mirror_mask_t mirrors; /* Bitmap of dependent mirrors. */
334 static struct facet *facet_create(struct rule_dpif *, const struct flow *);
335 static void facet_remove(struct facet *);
336 static void facet_free(struct facet *);
338 static struct facet *facet_find(struct ofproto_dpif *, const struct flow *);
339 static struct facet *facet_lookup_valid(struct ofproto_dpif *,
340 const struct flow *);
341 static bool facet_revalidate(struct facet *);
342 static bool facet_check_consistency(struct facet *);
344 static void facet_flush_stats(struct facet *);
346 static void facet_update_time(struct facet *, long long int used);
347 static void facet_reset_counters(struct facet *);
348 static void facet_push_stats(struct facet *);
349 static void facet_account(struct facet *);
351 static bool facet_is_controller_flow(struct facet *);
353 /* A dpif flow and actions associated with a facet.
355 * See also the large comment on struct facet. */
358 struct hmap_node hmap_node; /* In struct ofproto_dpif 'subfacets' list. */
359 struct list list_node; /* In struct facet's 'facets' list. */
360 struct facet *facet; /* Owning facet. */
364 * To save memory in the common case, 'key' is NULL if 'key_fitness' is
365 * ODP_FIT_PERFECT, that is, odp_flow_key_from_flow() can accurately
366 * regenerate the ODP flow key from ->facet->flow. */
367 enum odp_key_fitness key_fitness;
371 long long int used; /* Time last used; time created if not used. */
373 uint64_t dp_packet_count; /* Last known packet count in the datapath. */
374 uint64_t dp_byte_count; /* Last known byte count in the datapath. */
378 * These should be essentially identical for every subfacet in a facet, but
379 * may differ in trivial ways due to VLAN splinters. */
380 size_t actions_len; /* Number of bytes in actions[]. */
381 struct nlattr *actions; /* Datapath actions. */
383 bool installed; /* Installed in datapath? */
385 /* This value is normally the same as ->facet->flow.vlan_tci. Only VLAN
386 * splinters can cause it to differ. This value should be removed when
387 * the VLAN splinters feature is no longer needed. */
388 ovs_be16 initial_tci; /* Initial VLAN TCI value. */
391 static struct subfacet *subfacet_create(struct facet *, enum odp_key_fitness,
392 const struct nlattr *key,
393 size_t key_len, ovs_be16 initial_tci);
394 static struct subfacet *subfacet_find(struct ofproto_dpif *,
395 const struct nlattr *key, size_t key_len);
396 static void subfacet_destroy(struct subfacet *);
397 static void subfacet_destroy__(struct subfacet *);
398 static void subfacet_get_key(struct subfacet *, struct odputil_keybuf *,
400 static void subfacet_reset_dp_stats(struct subfacet *,
401 struct dpif_flow_stats *);
402 static void subfacet_update_time(struct subfacet *, long long int used);
403 static void subfacet_update_stats(struct subfacet *,
404 const struct dpif_flow_stats *);
405 static void subfacet_make_actions(struct subfacet *,
406 const struct ofpbuf *packet);
407 static int subfacet_install(struct subfacet *,
408 const struct nlattr *actions, size_t actions_len,
409 struct dpif_flow_stats *);
410 static void subfacet_uninstall(struct subfacet *);
416 struct ofbundle *bundle; /* Bundle that contains this port, if any. */
417 struct list bundle_node; /* In struct ofbundle's "ports" list. */
418 struct cfm *cfm; /* Connectivity Fault Management, if any. */
419 tag_type tag; /* Tag associated with this port. */
420 uint32_t bond_stable_id; /* stable_id to use as bond slave, or 0. */
421 bool may_enable; /* May be enabled in bonds. */
422 long long int carrier_seq; /* Carrier status changes. */
425 struct stp_port *stp_port; /* Spanning Tree Protocol, if any. */
426 enum stp_state stp_state; /* Always STP_DISABLED if STP not in use. */
427 long long int stp_state_entered;
429 struct hmap priorities; /* Map of attached 'priority_to_dscp's. */
431 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
433 * This is deprecated. It is only for compatibility with broken device
434 * drivers in old versions of Linux that do not properly support VLANs when
435 * VLAN devices are not used. When broken device drivers are no longer in
436 * widespread use, we will delete these interfaces. */
437 uint16_t realdev_ofp_port;
441 /* Node in 'ofport_dpif''s 'priorities' map. Used to maintain a map from
442 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
443 * traffic egressing the 'ofport' with that priority should be marked with. */
444 struct priority_to_dscp {
445 struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'priorities' map. */
446 uint32_t priority; /* Priority of this queue (see struct flow). */
448 uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */
451 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
453 * This is deprecated. It is only for compatibility with broken device drivers
454 * in old versions of Linux that do not properly support VLANs when VLAN
455 * devices are not used. When broken device drivers are no longer in
456 * widespread use, we will delete these interfaces. */
457 struct vlan_splinter {
458 struct hmap_node realdev_vid_node;
459 struct hmap_node vlandev_node;
460 uint16_t realdev_ofp_port;
461 uint16_t vlandev_ofp_port;
465 static uint32_t vsp_realdev_to_vlandev(const struct ofproto_dpif *,
466 uint32_t realdev, ovs_be16 vlan_tci);
467 static uint16_t vsp_vlandev_to_realdev(const struct ofproto_dpif *,
468 uint16_t vlandev, int *vid);
469 static void vsp_remove(struct ofport_dpif *);
470 static void vsp_add(struct ofport_dpif *, uint16_t realdev_ofp_port, int vid);
472 static struct ofport_dpif *
473 ofport_dpif_cast(const struct ofport *ofport)
475 assert(ofport->ofproto->ofproto_class == &ofproto_dpif_class);
476 return ofport ? CONTAINER_OF(ofport, struct ofport_dpif, up) : NULL;
479 static void port_run(struct ofport_dpif *);
480 static void port_wait(struct ofport_dpif *);
481 static int set_cfm(struct ofport *, const struct cfm_settings *);
482 static void ofport_clear_priorities(struct ofport_dpif *);
484 struct dpif_completion {
485 struct list list_node;
486 struct ofoperation *op;
489 /* Extra information about a classifier table.
490 * Currently used just for optimized flow revalidation. */
492 /* If either of these is nonnull, then this table has a form that allows
493 * flows to be tagged to avoid revalidating most flows for the most common
494 * kinds of flow table changes. */
495 struct cls_table *catchall_table; /* Table that wildcards all fields. */
496 struct cls_table *other_table; /* Table with any other wildcard set. */
497 uint32_t basis; /* Keeps each table's tags separate. */
500 struct ofproto_dpif {
501 struct hmap_node all_ofproto_dpifs_node; /* In 'all_ofproto_dpifs'. */
510 struct netflow *netflow;
511 struct dpif_sflow *sflow;
512 struct hmap bundles; /* Contains "struct ofbundle"s. */
513 struct mac_learning *ml;
514 struct ofmirror *mirrors[MAX_MIRRORS];
515 bool has_bonded_bundles;
518 struct timer next_expiration;
522 struct hmap subfacets;
525 struct table_dpif tables[N_TABLES];
526 bool need_revalidate;
527 struct tag_set revalidate_set;
529 /* Support for debugging async flow mods. */
530 struct list completions;
532 bool has_bundle_action; /* True when the first bundle action appears. */
533 struct netdev_stats stats; /* To account packets generated and consumed in
538 long long int stp_last_tick;
540 /* VLAN splinters. */
541 struct hmap realdev_vid_map; /* (realdev,vid) -> vlandev. */
542 struct hmap vlandev_map; /* vlandev -> (realdev,vid). */
545 /* Defer flow mod completion until "ovs-appctl ofproto/unclog"? (Useful only
546 * for debugging the asynchronous flow_mod implementation.) */
549 /* All existing ofproto_dpif instances, indexed by ->up.name. */
550 static struct hmap all_ofproto_dpifs = HMAP_INITIALIZER(&all_ofproto_dpifs);
552 static void ofproto_dpif_unixctl_init(void);
554 static struct ofproto_dpif *
555 ofproto_dpif_cast(const struct ofproto *ofproto)
557 assert(ofproto->ofproto_class == &ofproto_dpif_class);
558 return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
561 static struct ofport_dpif *get_ofp_port(struct ofproto_dpif *,
563 static struct ofport_dpif *get_odp_port(struct ofproto_dpif *,
565 static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
566 const struct ofpbuf *, ovs_be16 initial_tci,
569 /* Packet processing. */
570 static void update_learning_table(struct ofproto_dpif *,
571 const struct flow *, int vlan,
574 #define FLOW_MISS_MAX_BATCH 50
575 static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
577 /* Flow expiration. */
578 static int expire(struct ofproto_dpif *);
581 static void send_netflow_active_timeouts(struct ofproto_dpif *);
584 static int send_packet(const struct ofport_dpif *, struct ofpbuf *packet);
586 compose_sflow_action(const struct ofproto_dpif *, struct ofpbuf *odp_actions,
587 const struct flow *, uint32_t odp_port);
588 static void add_mirror_actions(struct action_xlate_ctx *ctx,
589 const struct flow *flow);
590 /* Global variables. */
591 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
593 /* Factory functions. */
596 enumerate_types(struct sset *types)
598 dp_enumerate_types(types);
602 enumerate_names(const char *type, struct sset *names)
604 return dp_enumerate_names(type, names);
608 del(const char *type, const char *name)
613 error = dpif_open(name, type, &dpif);
615 error = dpif_delete(dpif);
621 /* Basic life-cycle. */
623 static struct ofproto *
626 struct ofproto_dpif *ofproto = xmalloc(sizeof *ofproto);
631 dealloc(struct ofproto *ofproto_)
633 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
638 construct(struct ofproto *ofproto_)
640 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
641 const char *name = ofproto->up.name;
645 error = dpif_create_and_open(name, ofproto->up.type, &ofproto->dpif);
647 VLOG_ERR("failed to open datapath %s: %s", name, strerror(error));
651 ofproto->max_ports = dpif_get_max_ports(ofproto->dpif);
652 ofproto->n_matches = 0;
654 dpif_flow_flush(ofproto->dpif);
655 dpif_recv_purge(ofproto->dpif);
657 error = dpif_recv_set(ofproto->dpif, true);
659 VLOG_ERR("failed to listen on datapath %s: %s", name, strerror(error));
660 dpif_close(ofproto->dpif);
664 ofproto->netflow = NULL;
665 ofproto->sflow = NULL;
667 hmap_init(&ofproto->bundles);
668 ofproto->ml = mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME);
669 for (i = 0; i < MAX_MIRRORS; i++) {
670 ofproto->mirrors[i] = NULL;
672 ofproto->has_bonded_bundles = false;
674 timer_set_duration(&ofproto->next_expiration, 1000);
676 hmap_init(&ofproto->facets);
677 hmap_init(&ofproto->subfacets);
679 for (i = 0; i < N_TABLES; i++) {
680 struct table_dpif *table = &ofproto->tables[i];
682 table->catchall_table = NULL;
683 table->other_table = NULL;
684 table->basis = random_uint32();
686 ofproto->need_revalidate = false;
687 tag_set_init(&ofproto->revalidate_set);
689 list_init(&ofproto->completions);
691 ofproto_dpif_unixctl_init();
693 ofproto->has_bundle_action = false;
695 hmap_init(&ofproto->vlandev_map);
696 hmap_init(&ofproto->realdev_vid_map);
698 hmap_insert(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node,
699 hash_string(ofproto->up.name, 0));
700 memset(&ofproto->stats, 0, sizeof ofproto->stats);
702 ofproto_init_tables(ofproto_, N_TABLES);
708 complete_operations(struct ofproto_dpif *ofproto)
710 struct dpif_completion *c, *next;
712 LIST_FOR_EACH_SAFE (c, next, list_node, &ofproto->completions) {
713 ofoperation_complete(c->op, 0);
714 list_remove(&c->list_node);
720 destruct(struct ofproto *ofproto_)
722 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
723 struct rule_dpif *rule, *next_rule;
724 struct oftable *table;
727 hmap_remove(&all_ofproto_dpifs, &ofproto->all_ofproto_dpifs_node);
728 complete_operations(ofproto);
730 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
731 struct cls_cursor cursor;
733 cls_cursor_init(&cursor, &table->cls, NULL);
734 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
735 ofproto_rule_destroy(&rule->up);
739 for (i = 0; i < MAX_MIRRORS; i++) {
740 mirror_destroy(ofproto->mirrors[i]);
743 netflow_destroy(ofproto->netflow);
744 dpif_sflow_destroy(ofproto->sflow);
745 hmap_destroy(&ofproto->bundles);
746 mac_learning_destroy(ofproto->ml);
748 hmap_destroy(&ofproto->facets);
749 hmap_destroy(&ofproto->subfacets);
751 hmap_destroy(&ofproto->vlandev_map);
752 hmap_destroy(&ofproto->realdev_vid_map);
754 dpif_close(ofproto->dpif);
758 run_fast(struct ofproto *ofproto_)
760 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
763 /* Handle one or more batches of upcalls, until there's nothing left to do
764 * or until we do a fixed total amount of work.
766 * We do work in batches because it can be much cheaper to set up a number
767 * of flows and fire off their patches all at once. We do multiple batches
768 * because in some cases handling a packet can cause another packet to be
769 * queued almost immediately as part of the return flow. Both
770 * optimizations can make major improvements on some benchmarks and
771 * presumably for real traffic as well. */
773 while (work < FLOW_MISS_MAX_BATCH) {
774 int retval = handle_upcalls(ofproto, FLOW_MISS_MAX_BATCH - work);
784 run(struct ofproto *ofproto_)
786 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
787 struct ofport_dpif *ofport;
788 struct ofbundle *bundle;
792 complete_operations(ofproto);
794 dpif_run(ofproto->dpif);
796 error = run_fast(ofproto_);
801 if (timer_expired(&ofproto->next_expiration)) {
802 int delay = expire(ofproto);
803 timer_set_duration(&ofproto->next_expiration, delay);
806 if (ofproto->netflow) {
807 if (netflow_run(ofproto->netflow)) {
808 send_netflow_active_timeouts(ofproto);
811 if (ofproto->sflow) {
812 dpif_sflow_run(ofproto->sflow);
815 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
818 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
823 mac_learning_run(ofproto->ml, &ofproto->revalidate_set);
825 /* Now revalidate if there's anything to do. */
826 if (ofproto->need_revalidate
827 || !tag_set_is_empty(&ofproto->revalidate_set)) {
828 struct tag_set revalidate_set = ofproto->revalidate_set;
829 bool revalidate_all = ofproto->need_revalidate;
830 struct facet *facet, *next;
832 /* Clear the revalidation flags. */
833 tag_set_init(&ofproto->revalidate_set);
834 ofproto->need_revalidate = false;
836 HMAP_FOR_EACH_SAFE (facet, next, hmap_node, &ofproto->facets) {
838 || tag_set_intersects(&revalidate_set, facet->tags)) {
839 facet_revalidate(facet);
844 /* Check the consistency of a random facet, to aid debugging. */
845 if (!hmap_is_empty(&ofproto->facets) && !ofproto->need_revalidate) {
848 facet = CONTAINER_OF(hmap_random_node(&ofproto->facets),
849 struct facet, hmap_node);
850 if (!tag_set_intersects(&ofproto->revalidate_set, facet->tags)) {
851 if (!facet_check_consistency(facet)) {
852 ofproto->need_revalidate = true;
861 wait(struct ofproto *ofproto_)
863 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
864 struct ofport_dpif *ofport;
865 struct ofbundle *bundle;
867 if (!clogged && !list_is_empty(&ofproto->completions)) {
868 poll_immediate_wake();
871 dpif_wait(ofproto->dpif);
872 dpif_recv_wait(ofproto->dpif);
873 if (ofproto->sflow) {
874 dpif_sflow_wait(ofproto->sflow);
876 if (!tag_set_is_empty(&ofproto->revalidate_set)) {
877 poll_immediate_wake();
879 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
882 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
885 if (ofproto->netflow) {
886 netflow_wait(ofproto->netflow);
888 mac_learning_wait(ofproto->ml);
890 if (ofproto->need_revalidate) {
891 /* Shouldn't happen, but if it does just go around again. */
892 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
893 poll_immediate_wake();
895 timer_wait(&ofproto->next_expiration);
900 flush(struct ofproto *ofproto_)
902 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
903 struct facet *facet, *next_facet;
905 HMAP_FOR_EACH_SAFE (facet, next_facet, hmap_node, &ofproto->facets) {
906 /* Mark the facet as not installed so that facet_remove() doesn't
907 * bother trying to uninstall it. There is no point in uninstalling it
908 * individually since we are about to blow away all the facets with
909 * dpif_flow_flush(). */
910 struct subfacet *subfacet;
912 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
913 subfacet->installed = false;
914 subfacet->dp_packet_count = 0;
915 subfacet->dp_byte_count = 0;
919 dpif_flow_flush(ofproto->dpif);
923 get_features(struct ofproto *ofproto_ OVS_UNUSED,
924 bool *arp_match_ip, enum ofputil_action_bitmap *actions)
926 *arp_match_ip = true;
927 *actions = (OFPUTIL_A_OUTPUT |
928 OFPUTIL_A_SET_VLAN_VID |
929 OFPUTIL_A_SET_VLAN_PCP |
930 OFPUTIL_A_STRIP_VLAN |
931 OFPUTIL_A_SET_DL_SRC |
932 OFPUTIL_A_SET_DL_DST |
933 OFPUTIL_A_SET_NW_SRC |
934 OFPUTIL_A_SET_NW_DST |
935 OFPUTIL_A_SET_NW_TOS |
936 OFPUTIL_A_SET_TP_SRC |
937 OFPUTIL_A_SET_TP_DST |
942 get_tables(struct ofproto *ofproto_, struct ofp_table_stats *ots)
944 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
945 struct dpif_dp_stats s;
947 strcpy(ots->name, "classifier");
949 dpif_get_dp_stats(ofproto->dpif, &s);
950 put_32aligned_be64(&ots->lookup_count, htonll(s.n_hit + s.n_missed));
951 put_32aligned_be64(&ots->matched_count,
952 htonll(s.n_hit + ofproto->n_matches));
955 static struct ofport *
958 struct ofport_dpif *port = xmalloc(sizeof *port);
963 port_dealloc(struct ofport *port_)
965 struct ofport_dpif *port = ofport_dpif_cast(port_);
970 port_construct(struct ofport *port_)
972 struct ofport_dpif *port = ofport_dpif_cast(port_);
973 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
975 ofproto->need_revalidate = true;
976 port->odp_port = ofp_port_to_odp_port(port->up.ofp_port);
979 port->tag = tag_create_random();
980 port->may_enable = true;
981 port->stp_port = NULL;
982 port->stp_state = STP_DISABLED;
983 hmap_init(&port->priorities);
984 port->realdev_ofp_port = 0;
985 port->vlandev_vid = 0;
986 port->carrier_seq = netdev_get_carrier_resets(port->up.netdev);
988 if (ofproto->sflow) {
989 dpif_sflow_add_port(ofproto->sflow, port_);
996 port_destruct(struct ofport *port_)
998 struct ofport_dpif *port = ofport_dpif_cast(port_);
999 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1001 ofproto->need_revalidate = true;
1002 bundle_remove(port_);
1003 set_cfm(port_, NULL);
1004 if (ofproto->sflow) {
1005 dpif_sflow_del_port(ofproto->sflow, port->odp_port);
1008 ofport_clear_priorities(port);
1009 hmap_destroy(&port->priorities);
1013 port_modified(struct ofport *port_)
1015 struct ofport_dpif *port = ofport_dpif_cast(port_);
1017 if (port->bundle && port->bundle->bond) {
1018 bond_slave_set_netdev(port->bundle->bond, port, port->up.netdev);
1023 port_reconfigured(struct ofport *port_, enum ofputil_port_config old_config)
1025 struct ofport_dpif *port = ofport_dpif_cast(port_);
1026 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
1027 enum ofputil_port_config changed = old_config ^ port->up.pp.config;
1029 if (changed & (OFPUTIL_PC_NO_RECV | OFPUTIL_PC_NO_RECV_STP |
1030 OFPUTIL_PC_NO_FWD | OFPUTIL_PC_NO_FLOOD)) {
1031 ofproto->need_revalidate = true;
1033 if (changed & OFPUTIL_PC_NO_FLOOD && port->bundle) {
1034 bundle_update(port->bundle);
1040 set_sflow(struct ofproto *ofproto_,
1041 const struct ofproto_sflow_options *sflow_options)
1043 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1044 struct dpif_sflow *ds = ofproto->sflow;
1046 if (sflow_options) {
1048 struct ofport_dpif *ofport;
1050 ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
1051 HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
1052 dpif_sflow_add_port(ds, &ofport->up);
1054 ofproto->need_revalidate = true;
1056 dpif_sflow_set_options(ds, sflow_options);
1059 dpif_sflow_destroy(ds);
1060 ofproto->need_revalidate = true;
1061 ofproto->sflow = NULL;
1068 set_cfm(struct ofport *ofport_, const struct cfm_settings *s)
1070 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1077 struct ofproto_dpif *ofproto;
1079 ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1080 ofproto->need_revalidate = true;
1081 ofport->cfm = cfm_create(netdev_get_name(ofport->up.netdev));
1084 if (cfm_configure(ofport->cfm, s)) {
1090 cfm_destroy(ofport->cfm);
1096 get_cfm_fault(const struct ofport *ofport_)
1098 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1100 return ofport->cfm ? cfm_get_fault(ofport->cfm) : -1;
1104 get_cfm_remote_mpids(const struct ofport *ofport_, const uint64_t **rmps,
1107 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1110 cfm_get_remote_mpids(ofport->cfm, rmps, n_rmps);
1117 /* Spanning Tree. */
1120 send_bpdu_cb(struct ofpbuf *pkt, int port_num, void *ofproto_)
1122 struct ofproto_dpif *ofproto = ofproto_;
1123 struct stp_port *sp = stp_get_port(ofproto->stp, port_num);
1124 struct ofport_dpif *ofport;
1126 ofport = stp_port_get_aux(sp);
1128 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on unknown port %d",
1129 ofproto->up.name, port_num);
1131 struct eth_header *eth = pkt->l2;
1133 netdev_get_etheraddr(ofport->up.netdev, eth->eth_src);
1134 if (eth_addr_is_zero(eth->eth_src)) {
1135 VLOG_WARN_RL(&rl, "%s: cannot send BPDU on port %d "
1136 "with unknown MAC", ofproto->up.name, port_num);
1138 send_packet(ofport, pkt);
1144 /* Configures STP on 'ofproto_' using the settings defined in 's'. */
1146 set_stp(struct ofproto *ofproto_, const struct ofproto_stp_settings *s)
1148 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1150 /* Only revalidate flows if the configuration changed. */
1151 if (!s != !ofproto->stp) {
1152 ofproto->need_revalidate = true;
1156 if (!ofproto->stp) {
1157 ofproto->stp = stp_create(ofproto_->name, s->system_id,
1158 send_bpdu_cb, ofproto);
1159 ofproto->stp_last_tick = time_msec();
1162 stp_set_bridge_id(ofproto->stp, s->system_id);
1163 stp_set_bridge_priority(ofproto->stp, s->priority);
1164 stp_set_hello_time(ofproto->stp, s->hello_time);
1165 stp_set_max_age(ofproto->stp, s->max_age);
1166 stp_set_forward_delay(ofproto->stp, s->fwd_delay);
1168 struct ofport *ofport;
1170 HMAP_FOR_EACH (ofport, hmap_node, &ofproto->up.ports) {
1171 set_stp_port(ofport, NULL);
1174 stp_destroy(ofproto->stp);
1175 ofproto->stp = NULL;
1182 get_stp_status(struct ofproto *ofproto_, struct ofproto_stp_status *s)
1184 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1188 s->bridge_id = stp_get_bridge_id(ofproto->stp);
1189 s->designated_root = stp_get_designated_root(ofproto->stp);
1190 s->root_path_cost = stp_get_root_path_cost(ofproto->stp);
1199 update_stp_port_state(struct ofport_dpif *ofport)
1201 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1202 enum stp_state state;
1204 /* Figure out new state. */
1205 state = ofport->stp_port ? stp_port_get_state(ofport->stp_port)
1209 if (ofport->stp_state != state) {
1210 enum ofputil_port_state of_state;
1213 VLOG_DBG_RL(&rl, "port %s: STP state changed from %s to %s",
1214 netdev_get_name(ofport->up.netdev),
1215 stp_state_name(ofport->stp_state),
1216 stp_state_name(state));
1217 if (stp_learn_in_state(ofport->stp_state)
1218 != stp_learn_in_state(state)) {
1219 /* xxx Learning action flows should also be flushed. */
1220 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1222 fwd_change = stp_forward_in_state(ofport->stp_state)
1223 != stp_forward_in_state(state);
1225 ofproto->need_revalidate = true;
1226 ofport->stp_state = state;
1227 ofport->stp_state_entered = time_msec();
1229 if (fwd_change && ofport->bundle) {
1230 bundle_update(ofport->bundle);
1233 /* Update the STP state bits in the OpenFlow port description. */
1234 of_state = ofport->up.pp.state & ~OFPUTIL_PS_STP_MASK;
1235 of_state |= (state == STP_LISTENING ? OFPUTIL_PS_STP_LISTEN
1236 : state == STP_LEARNING ? OFPUTIL_PS_STP_LEARN
1237 : state == STP_FORWARDING ? OFPUTIL_PS_STP_FORWARD
1238 : state == STP_BLOCKING ? OFPUTIL_PS_STP_BLOCK
1240 ofproto_port_set_state(&ofport->up, of_state);
1244 /* Configures STP on 'ofport_' using the settings defined in 's'. The
1245 * caller is responsible for assigning STP port numbers and ensuring
1246 * there are no duplicates. */
1248 set_stp_port(struct ofport *ofport_,
1249 const struct ofproto_port_stp_settings *s)
1251 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1252 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1253 struct stp_port *sp = ofport->stp_port;
1255 if (!s || !s->enable) {
1257 ofport->stp_port = NULL;
1258 stp_port_disable(sp);
1259 update_stp_port_state(ofport);
1262 } else if (sp && stp_port_no(sp) != s->port_num
1263 && ofport == stp_port_get_aux(sp)) {
1264 /* The port-id changed, so disable the old one if it's not
1265 * already in use by another port. */
1266 stp_port_disable(sp);
1269 sp = ofport->stp_port = stp_get_port(ofproto->stp, s->port_num);
1270 stp_port_enable(sp);
1272 stp_port_set_aux(sp, ofport);
1273 stp_port_set_priority(sp, s->priority);
1274 stp_port_set_path_cost(sp, s->path_cost);
1276 update_stp_port_state(ofport);
1282 get_stp_port_status(struct ofport *ofport_,
1283 struct ofproto_port_stp_status *s)
1285 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1286 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1287 struct stp_port *sp = ofport->stp_port;
1289 if (!ofproto->stp || !sp) {
1295 s->port_id = stp_port_get_id(sp);
1296 s->state = stp_port_get_state(sp);
1297 s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
1298 s->role = stp_port_get_role(sp);
1299 stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
1305 stp_run(struct ofproto_dpif *ofproto)
1308 long long int now = time_msec();
1309 long long int elapsed = now - ofproto->stp_last_tick;
1310 struct stp_port *sp;
1313 stp_tick(ofproto->stp, MIN(INT_MAX, elapsed));
1314 ofproto->stp_last_tick = now;
1316 while (stp_get_changed_port(ofproto->stp, &sp)) {
1317 struct ofport_dpif *ofport = stp_port_get_aux(sp);
1320 update_stp_port_state(ofport);
1324 if (stp_check_and_reset_fdb_flush(ofproto->stp)) {
1325 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
1331 stp_wait(struct ofproto_dpif *ofproto)
1334 poll_timer_wait(1000);
1338 /* Returns true if STP should process 'flow'. */
1340 stp_should_process_flow(const struct flow *flow)
1342 return eth_addr_equals(flow->dl_dst, eth_addr_stp);
1346 stp_process_packet(const struct ofport_dpif *ofport,
1347 const struct ofpbuf *packet)
1349 struct ofpbuf payload = *packet;
1350 struct eth_header *eth = payload.data;
1351 struct stp_port *sp = ofport->stp_port;
1353 /* Sink packets on ports that have STP disabled when the bridge has
1355 if (!sp || stp_port_get_state(sp) == STP_DISABLED) {
1359 /* Trim off padding on payload. */
1360 if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
1361 payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN;
1364 if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
1365 stp_received_bpdu(sp, payload.data, payload.size);
1369 static struct priority_to_dscp *
1370 get_priority(const struct ofport_dpif *ofport, uint32_t priority)
1372 struct priority_to_dscp *pdscp;
1375 hash = hash_int(priority, 0);
1376 HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &ofport->priorities) {
1377 if (pdscp->priority == priority) {
1385 ofport_clear_priorities(struct ofport_dpif *ofport)
1387 struct priority_to_dscp *pdscp, *next;
1389 HMAP_FOR_EACH_SAFE (pdscp, next, hmap_node, &ofport->priorities) {
1390 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1396 set_queues(struct ofport *ofport_,
1397 const struct ofproto_port_queue *qdscp_list,
1400 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
1401 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
1402 struct hmap new = HMAP_INITIALIZER(&new);
1405 for (i = 0; i < n_qdscp; i++) {
1406 struct priority_to_dscp *pdscp;
1410 dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK;
1411 if (dpif_queue_to_priority(ofproto->dpif, qdscp_list[i].queue,
1416 pdscp = get_priority(ofport, priority);
1418 hmap_remove(&ofport->priorities, &pdscp->hmap_node);
1420 pdscp = xmalloc(sizeof *pdscp);
1421 pdscp->priority = priority;
1423 ofproto->need_revalidate = true;
1426 if (pdscp->dscp != dscp) {
1428 ofproto->need_revalidate = true;
1431 hmap_insert(&new, &pdscp->hmap_node, hash_int(pdscp->priority, 0));
1434 if (!hmap_is_empty(&ofport->priorities)) {
1435 ofport_clear_priorities(ofport);
1436 ofproto->need_revalidate = true;
1439 hmap_swap(&new, &ofport->priorities);
1447 /* Expires all MAC learning entries associated with 'bundle' and forces its
1448 * ofproto to revalidate every flow.
1450 * Normally MAC learning entries are removed only from the ofproto associated
1451 * with 'bundle', but if 'all_ofprotos' is true, then the MAC learning entries
1452 * are removed from every ofproto. When patch ports and SLB bonds are in use
1453 * and a VM migration happens and the gratuitous ARPs are somehow lost, this
1454 * avoids a MAC_ENTRY_IDLE_TIME delay before the migrated VM can communicate
1455 * with the host from which it migrated. */
1457 bundle_flush_macs(struct ofbundle *bundle, bool all_ofprotos)
1459 struct ofproto_dpif *ofproto = bundle->ofproto;
1460 struct mac_learning *ml = ofproto->ml;
1461 struct mac_entry *mac, *next_mac;
1463 ofproto->need_revalidate = true;
1464 LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
1465 if (mac->port.p == bundle) {
1467 struct ofproto_dpif *o;
1469 HMAP_FOR_EACH (o, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
1471 struct mac_entry *e;
1473 e = mac_learning_lookup(o->ml, mac->mac, mac->vlan,
1476 tag_set_add(&o->revalidate_set, e->tag);
1477 mac_learning_expire(o->ml, e);
1483 mac_learning_expire(ml, mac);
1488 static struct ofbundle *
1489 bundle_lookup(const struct ofproto_dpif *ofproto, void *aux)
1491 struct ofbundle *bundle;
1493 HMAP_FOR_EACH_IN_BUCKET (bundle, hmap_node, hash_pointer(aux, 0),
1494 &ofproto->bundles) {
1495 if (bundle->aux == aux) {
1502 /* Looks up each of the 'n_auxes' pointers in 'auxes' as bundles and adds the
1503 * ones that are found to 'bundles'. */
1505 bundle_lookup_multiple(struct ofproto_dpif *ofproto,
1506 void **auxes, size_t n_auxes,
1507 struct hmapx *bundles)
1511 hmapx_init(bundles);
1512 for (i = 0; i < n_auxes; i++) {
1513 struct ofbundle *bundle = bundle_lookup(ofproto, auxes[i]);
1515 hmapx_add(bundles, bundle);
1521 bundle_update(struct ofbundle *bundle)
1523 struct ofport_dpif *port;
1525 bundle->floodable = true;
1526 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1527 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
1528 || !stp_forward_in_state(port->stp_state)) {
1529 bundle->floodable = false;
1536 bundle_del_port(struct ofport_dpif *port)
1538 struct ofbundle *bundle = port->bundle;
1540 bundle->ofproto->need_revalidate = true;
1542 list_remove(&port->bundle_node);
1543 port->bundle = NULL;
1546 lacp_slave_unregister(bundle->lacp, port);
1549 bond_slave_unregister(bundle->bond, port);
1552 bundle_update(bundle);
1556 bundle_add_port(struct ofbundle *bundle, uint32_t ofp_port,
1557 struct lacp_slave_settings *lacp,
1558 uint32_t bond_stable_id)
1560 struct ofport_dpif *port;
1562 port = get_ofp_port(bundle->ofproto, ofp_port);
1567 if (port->bundle != bundle) {
1568 bundle->ofproto->need_revalidate = true;
1570 bundle_del_port(port);
1573 port->bundle = bundle;
1574 list_push_back(&bundle->ports, &port->bundle_node);
1575 if (port->up.pp.config & OFPUTIL_PC_NO_FLOOD
1576 || !stp_forward_in_state(port->stp_state)) {
1577 bundle->floodable = false;
1581 port->bundle->ofproto->need_revalidate = true;
1582 lacp_slave_register(bundle->lacp, port, lacp);
1585 port->bond_stable_id = bond_stable_id;
1591 bundle_destroy(struct ofbundle *bundle)
1593 struct ofproto_dpif *ofproto;
1594 struct ofport_dpif *port, *next_port;
1601 ofproto = bundle->ofproto;
1602 for (i = 0; i < MAX_MIRRORS; i++) {
1603 struct ofmirror *m = ofproto->mirrors[i];
1605 if (m->out == bundle) {
1607 } else if (hmapx_find_and_delete(&m->srcs, bundle)
1608 || hmapx_find_and_delete(&m->dsts, bundle)) {
1609 ofproto->need_revalidate = true;
1614 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1615 bundle_del_port(port);
1618 bundle_flush_macs(bundle, true);
1619 hmap_remove(&ofproto->bundles, &bundle->hmap_node);
1621 free(bundle->trunks);
1622 lacp_destroy(bundle->lacp);
1623 bond_destroy(bundle->bond);
1628 bundle_set(struct ofproto *ofproto_, void *aux,
1629 const struct ofproto_bundle_settings *s)
1631 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1632 bool need_flush = false;
1633 struct ofport_dpif *port;
1634 struct ofbundle *bundle;
1635 unsigned long *trunks;
1641 bundle_destroy(bundle_lookup(ofproto, aux));
1645 assert(s->n_slaves == 1 || s->bond != NULL);
1646 assert((s->lacp != NULL) == (s->lacp_slaves != NULL));
1648 bundle = bundle_lookup(ofproto, aux);
1650 bundle = xmalloc(sizeof *bundle);
1652 bundle->ofproto = ofproto;
1653 hmap_insert(&ofproto->bundles, &bundle->hmap_node,
1654 hash_pointer(aux, 0));
1656 bundle->name = NULL;
1658 list_init(&bundle->ports);
1659 bundle->vlan_mode = PORT_VLAN_TRUNK;
1661 bundle->trunks = NULL;
1662 bundle->use_priority_tags = s->use_priority_tags;
1663 bundle->lacp = NULL;
1664 bundle->bond = NULL;
1666 bundle->floodable = true;
1668 bundle->src_mirrors = 0;
1669 bundle->dst_mirrors = 0;
1670 bundle->mirror_out = 0;
1673 if (!bundle->name || strcmp(s->name, bundle->name)) {
1675 bundle->name = xstrdup(s->name);
1680 if (!bundle->lacp) {
1681 ofproto->need_revalidate = true;
1682 bundle->lacp = lacp_create();
1684 lacp_configure(bundle->lacp, s->lacp);
1686 lacp_destroy(bundle->lacp);
1687 bundle->lacp = NULL;
1690 /* Update set of ports. */
1692 for (i = 0; i < s->n_slaves; i++) {
1693 if (!bundle_add_port(bundle, s->slaves[i],
1694 s->lacp ? &s->lacp_slaves[i] : NULL,
1695 s->bond_stable_ids ? s->bond_stable_ids[i] : 0)) {
1699 if (!ok || list_size(&bundle->ports) != s->n_slaves) {
1700 struct ofport_dpif *next_port;
1702 LIST_FOR_EACH_SAFE (port, next_port, bundle_node, &bundle->ports) {
1703 for (i = 0; i < s->n_slaves; i++) {
1704 if (s->slaves[i] == port->up.ofp_port) {
1709 bundle_del_port(port);
1713 assert(list_size(&bundle->ports) <= s->n_slaves);
1715 if (list_is_empty(&bundle->ports)) {
1716 bundle_destroy(bundle);
1720 /* Set VLAN tagging mode */
1721 if (s->vlan_mode != bundle->vlan_mode
1722 || s->use_priority_tags != bundle->use_priority_tags) {
1723 bundle->vlan_mode = s->vlan_mode;
1724 bundle->use_priority_tags = s->use_priority_tags;
1729 vlan = (s->vlan_mode == PORT_VLAN_TRUNK ? -1
1730 : s->vlan >= 0 && s->vlan <= 4095 ? s->vlan
1732 if (vlan != bundle->vlan) {
1733 bundle->vlan = vlan;
1737 /* Get trunked VLANs. */
1738 switch (s->vlan_mode) {
1739 case PORT_VLAN_ACCESS:
1743 case PORT_VLAN_TRUNK:
1744 trunks = (unsigned long *) s->trunks;
1747 case PORT_VLAN_NATIVE_UNTAGGED:
1748 case PORT_VLAN_NATIVE_TAGGED:
1749 if (vlan != 0 && (!s->trunks
1750 || !bitmap_is_set(s->trunks, vlan)
1751 || bitmap_is_set(s->trunks, 0))) {
1752 /* Force trunking the native VLAN and prohibit trunking VLAN 0. */
1754 trunks = bitmap_clone(s->trunks, 4096);
1756 trunks = bitmap_allocate1(4096);
1758 bitmap_set1(trunks, vlan);
1759 bitmap_set0(trunks, 0);
1761 trunks = (unsigned long *) s->trunks;
1768 if (!vlan_bitmap_equal(trunks, bundle->trunks)) {
1769 free(bundle->trunks);
1770 if (trunks == s->trunks) {
1771 bundle->trunks = vlan_bitmap_clone(trunks);
1773 bundle->trunks = trunks;
1778 if (trunks != s->trunks) {
1783 if (!list_is_short(&bundle->ports)) {
1784 bundle->ofproto->has_bonded_bundles = true;
1786 if (bond_reconfigure(bundle->bond, s->bond)) {
1787 ofproto->need_revalidate = true;
1790 bundle->bond = bond_create(s->bond);
1791 ofproto->need_revalidate = true;
1794 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1795 bond_slave_register(bundle->bond, port, port->bond_stable_id,
1799 bond_destroy(bundle->bond);
1800 bundle->bond = NULL;
1803 /* If we changed something that would affect MAC learning, un-learn
1804 * everything on this port and force flow revalidation. */
1806 bundle_flush_macs(bundle, false);
1813 bundle_remove(struct ofport *port_)
1815 struct ofport_dpif *port = ofport_dpif_cast(port_);
1816 struct ofbundle *bundle = port->bundle;
1819 bundle_del_port(port);
1820 if (list_is_empty(&bundle->ports)) {
1821 bundle_destroy(bundle);
1822 } else if (list_is_short(&bundle->ports)) {
1823 bond_destroy(bundle->bond);
1824 bundle->bond = NULL;
1830 send_pdu_cb(void *port_, const void *pdu, size_t pdu_size)
1832 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
1833 struct ofport_dpif *port = port_;
1834 uint8_t ea[ETH_ADDR_LEN];
1837 error = netdev_get_etheraddr(port->up.netdev, ea);
1839 struct ofpbuf packet;
1842 ofpbuf_init(&packet, 0);
1843 packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
1845 memcpy(packet_pdu, pdu, pdu_size);
1847 send_packet(port, &packet);
1848 ofpbuf_uninit(&packet);
1850 VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
1851 "%s (%s)", port->bundle->name,
1852 netdev_get_name(port->up.netdev), strerror(error));
1857 bundle_send_learning_packets(struct ofbundle *bundle)
1859 struct ofproto_dpif *ofproto = bundle->ofproto;
1860 int error, n_packets, n_errors;
1861 struct mac_entry *e;
1863 error = n_packets = n_errors = 0;
1864 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
1865 if (e->port.p != bundle) {
1866 struct ofpbuf *learning_packet;
1867 struct ofport_dpif *port;
1871 /* The assignment to "port" is unnecessary but makes "grep"ing for
1872 * struct ofport_dpif more effective. */
1873 learning_packet = bond_compose_learning_packet(bundle->bond,
1877 ret = send_packet(port, learning_packet);
1878 ofpbuf_delete(learning_packet);
1888 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1889 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
1890 "packets, last error was: %s",
1891 bundle->name, n_errors, n_packets, strerror(error));
1893 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
1894 bundle->name, n_packets);
1899 bundle_run(struct ofbundle *bundle)
1902 lacp_run(bundle->lacp, send_pdu_cb);
1905 struct ofport_dpif *port;
1907 LIST_FOR_EACH (port, bundle_node, &bundle->ports) {
1908 bond_slave_set_may_enable(bundle->bond, port, port->may_enable);
1911 bond_run(bundle->bond, &bundle->ofproto->revalidate_set,
1912 lacp_status(bundle->lacp));
1913 if (bond_should_send_learning_packets(bundle->bond)) {
1914 bundle_send_learning_packets(bundle);
1920 bundle_wait(struct ofbundle *bundle)
1923 lacp_wait(bundle->lacp);
1926 bond_wait(bundle->bond);
1933 mirror_scan(struct ofproto_dpif *ofproto)
1937 for (idx = 0; idx < MAX_MIRRORS; idx++) {
1938 if (!ofproto->mirrors[idx]) {
1945 static struct ofmirror *
1946 mirror_lookup(struct ofproto_dpif *ofproto, void *aux)
1950 for (i = 0; i < MAX_MIRRORS; i++) {
1951 struct ofmirror *mirror = ofproto->mirrors[i];
1952 if (mirror && mirror->aux == aux) {
1960 /* Update the 'dup_mirrors' member of each of the ofmirrors in 'ofproto'. */
1962 mirror_update_dups(struct ofproto_dpif *ofproto)
1966 for (i = 0; i < MAX_MIRRORS; i++) {
1967 struct ofmirror *m = ofproto->mirrors[i];
1970 m->dup_mirrors = MIRROR_MASK_C(1) << i;
1974 for (i = 0; i < MAX_MIRRORS; i++) {
1975 struct ofmirror *m1 = ofproto->mirrors[i];
1982 for (j = i + 1; j < MAX_MIRRORS; j++) {
1983 struct ofmirror *m2 = ofproto->mirrors[j];
1985 if (m2 && m1->out == m2->out && m1->out_vlan == m2->out_vlan) {
1986 m1->dup_mirrors |= MIRROR_MASK_C(1) << j;
1987 m2->dup_mirrors |= m1->dup_mirrors;
1994 mirror_set(struct ofproto *ofproto_, void *aux,
1995 const struct ofproto_mirror_settings *s)
1997 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
1998 mirror_mask_t mirror_bit;
1999 struct ofbundle *bundle;
2000 struct ofmirror *mirror;
2001 struct ofbundle *out;
2002 struct hmapx srcs; /* Contains "struct ofbundle *"s. */
2003 struct hmapx dsts; /* Contains "struct ofbundle *"s. */
2006 mirror = mirror_lookup(ofproto, aux);
2008 mirror_destroy(mirror);
2014 idx = mirror_scan(ofproto);
2016 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
2018 ofproto->up.name, MAX_MIRRORS, s->name);
2022 mirror = ofproto->mirrors[idx] = xzalloc(sizeof *mirror);
2023 mirror->ofproto = ofproto;
2026 mirror->out_vlan = -1;
2027 mirror->name = NULL;
2030 if (!mirror->name || strcmp(s->name, mirror->name)) {
2032 mirror->name = xstrdup(s->name);
2035 /* Get the new configuration. */
2036 if (s->out_bundle) {
2037 out = bundle_lookup(ofproto, s->out_bundle);
2039 mirror_destroy(mirror);
2045 out_vlan = s->out_vlan;
2047 bundle_lookup_multiple(ofproto, s->srcs, s->n_srcs, &srcs);
2048 bundle_lookup_multiple(ofproto, s->dsts, s->n_dsts, &dsts);
2050 /* If the configuration has not changed, do nothing. */
2051 if (hmapx_equals(&srcs, &mirror->srcs)
2052 && hmapx_equals(&dsts, &mirror->dsts)
2053 && vlan_bitmap_equal(mirror->vlans, s->src_vlans)
2054 && mirror->out == out
2055 && mirror->out_vlan == out_vlan)
2057 hmapx_destroy(&srcs);
2058 hmapx_destroy(&dsts);
2062 hmapx_swap(&srcs, &mirror->srcs);
2063 hmapx_destroy(&srcs);
2065 hmapx_swap(&dsts, &mirror->dsts);
2066 hmapx_destroy(&dsts);
2068 free(mirror->vlans);
2069 mirror->vlans = vlan_bitmap_clone(s->src_vlans);
2072 mirror->out_vlan = out_vlan;
2074 /* Update bundles. */
2075 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2076 HMAP_FOR_EACH (bundle, hmap_node, &mirror->ofproto->bundles) {
2077 if (hmapx_contains(&mirror->srcs, bundle)) {
2078 bundle->src_mirrors |= mirror_bit;
2080 bundle->src_mirrors &= ~mirror_bit;
2083 if (hmapx_contains(&mirror->dsts, bundle)) {
2084 bundle->dst_mirrors |= mirror_bit;
2086 bundle->dst_mirrors &= ~mirror_bit;
2089 if (mirror->out == bundle) {
2090 bundle->mirror_out |= mirror_bit;
2092 bundle->mirror_out &= ~mirror_bit;
2096 ofproto->need_revalidate = true;
2097 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2098 mirror_update_dups(ofproto);
2104 mirror_destroy(struct ofmirror *mirror)
2106 struct ofproto_dpif *ofproto;
2107 mirror_mask_t mirror_bit;
2108 struct ofbundle *bundle;
2114 ofproto = mirror->ofproto;
2115 ofproto->need_revalidate = true;
2116 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2118 mirror_bit = MIRROR_MASK_C(1) << mirror->idx;
2119 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2120 bundle->src_mirrors &= ~mirror_bit;
2121 bundle->dst_mirrors &= ~mirror_bit;
2122 bundle->mirror_out &= ~mirror_bit;
2125 hmapx_destroy(&mirror->srcs);
2126 hmapx_destroy(&mirror->dsts);
2127 free(mirror->vlans);
2129 ofproto->mirrors[mirror->idx] = NULL;
2133 mirror_update_dups(ofproto);
2137 mirror_get_stats(struct ofproto *ofproto_, void *aux,
2138 uint64_t *packets, uint64_t *bytes)
2140 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2141 struct ofmirror *mirror = mirror_lookup(ofproto, aux);
2144 *packets = *bytes = UINT64_MAX;
2148 *packets = mirror->packet_count;
2149 *bytes = mirror->byte_count;
2155 set_flood_vlans(struct ofproto *ofproto_, unsigned long *flood_vlans)
2157 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2158 if (mac_learning_set_flood_vlans(ofproto->ml, flood_vlans)) {
2159 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
2165 is_mirror_output_bundle(const struct ofproto *ofproto_, void *aux)
2167 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2168 struct ofbundle *bundle = bundle_lookup(ofproto, aux);
2169 return bundle && bundle->mirror_out != 0;
2173 forward_bpdu_changed(struct ofproto *ofproto_)
2175 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2176 /* Revalidate cached flows whenever forward_bpdu option changes. */
2177 ofproto->need_revalidate = true;
2181 set_mac_idle_time(struct ofproto *ofproto_, unsigned int idle_time)
2183 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2184 mac_learning_set_idle_time(ofproto->ml, idle_time);
2189 static struct ofport_dpif *
2190 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
2192 struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
2193 return ofport ? ofport_dpif_cast(ofport) : NULL;
2196 static struct ofport_dpif *
2197 get_odp_port(struct ofproto_dpif *ofproto, uint32_t odp_port)
2199 return get_ofp_port(ofproto, odp_port_to_ofp_port(odp_port));
2203 ofproto_port_from_dpif_port(struct ofproto_port *ofproto_port,
2204 struct dpif_port *dpif_port)
2206 ofproto_port->name = dpif_port->name;
2207 ofproto_port->type = dpif_port->type;
2208 ofproto_port->ofp_port = odp_port_to_ofp_port(dpif_port->port_no);
2212 port_run(struct ofport_dpif *ofport)
2214 long long int carrier_seq = netdev_get_carrier_resets(ofport->up.netdev);
2215 bool carrier_changed = carrier_seq != ofport->carrier_seq;
2216 bool enable = netdev_get_carrier(ofport->up.netdev);
2218 ofport->carrier_seq = carrier_seq;
2221 cfm_run(ofport->cfm);
2223 if (cfm_should_send_ccm(ofport->cfm)) {
2224 struct ofpbuf packet;
2226 ofpbuf_init(&packet, 0);
2227 cfm_compose_ccm(ofport->cfm, &packet, ofport->up.pp.hw_addr);
2228 send_packet(ofport, &packet);
2229 ofpbuf_uninit(&packet);
2232 enable = enable && !cfm_get_fault(ofport->cfm)
2233 && cfm_get_opup(ofport->cfm);
2236 if (ofport->bundle) {
2237 enable = enable && lacp_slave_may_enable(ofport->bundle->lacp, ofport);
2238 if (carrier_changed) {
2239 lacp_slave_carrier_changed(ofport->bundle->lacp, ofport);
2243 if (ofport->may_enable != enable) {
2244 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2246 if (ofproto->has_bundle_action) {
2247 ofproto->need_revalidate = true;
2251 ofport->may_enable = enable;
2255 port_wait(struct ofport_dpif *ofport)
2258 cfm_wait(ofport->cfm);
2263 port_query_by_name(const struct ofproto *ofproto_, const char *devname,
2264 struct ofproto_port *ofproto_port)
2266 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2267 struct dpif_port dpif_port;
2270 error = dpif_port_query_by_name(ofproto->dpif, devname, &dpif_port);
2272 ofproto_port_from_dpif_port(ofproto_port, &dpif_port);
2278 port_add(struct ofproto *ofproto_, struct netdev *netdev, uint16_t *ofp_portp)
2280 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2284 error = dpif_port_add(ofproto->dpif, netdev, &odp_port);
2286 *ofp_portp = odp_port_to_ofp_port(odp_port);
2292 port_del(struct ofproto *ofproto_, uint16_t ofp_port)
2294 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2297 error = dpif_port_del(ofproto->dpif, ofp_port_to_odp_port(ofp_port));
2299 struct ofport_dpif *ofport = get_ofp_port(ofproto, ofp_port);
2301 /* The caller is going to close ofport->up.netdev. If this is a
2302 * bonded port, then the bond is using that netdev, so remove it
2303 * from the bond. The client will need to reconfigure everything
2304 * after deleting ports, so then the slave will get re-added. */
2305 bundle_remove(&ofport->up);
2312 port_get_stats(const struct ofport *ofport_, struct netdev_stats *stats)
2314 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2317 error = netdev_get_stats(ofport->up.netdev, stats);
2319 if (!error && ofport->odp_port == OVSP_LOCAL) {
2320 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
2322 /* ofproto->stats.tx_packets represents packets that we created
2323 * internally and sent to some port (e.g. packets sent with
2324 * send_packet()). Account for them as if they had come from
2325 * OFPP_LOCAL and got forwarded. */
2327 if (stats->rx_packets != UINT64_MAX) {
2328 stats->rx_packets += ofproto->stats.tx_packets;
2331 if (stats->rx_bytes != UINT64_MAX) {
2332 stats->rx_bytes += ofproto->stats.tx_bytes;
2335 /* ofproto->stats.rx_packets represents packets that were received on
2336 * some port and we processed internally and dropped (e.g. STP).
2337 * Account fro them as if they had been forwarded to OFPP_LOCAL. */
2339 if (stats->tx_packets != UINT64_MAX) {
2340 stats->tx_packets += ofproto->stats.rx_packets;
2343 if (stats->tx_bytes != UINT64_MAX) {
2344 stats->tx_bytes += ofproto->stats.rx_bytes;
2351 /* Account packets for LOCAL port. */
2353 ofproto_update_local_port_stats(const struct ofproto *ofproto_,
2354 size_t tx_size, size_t rx_size)
2356 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2359 ofproto->stats.rx_packets++;
2360 ofproto->stats.rx_bytes += rx_size;
2363 ofproto->stats.tx_packets++;
2364 ofproto->stats.tx_bytes += tx_size;
2368 struct port_dump_state {
2369 struct dpif_port_dump dump;
2374 port_dump_start(const struct ofproto *ofproto_, void **statep)
2376 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2377 struct port_dump_state *state;
2379 *statep = state = xmalloc(sizeof *state);
2380 dpif_port_dump_start(&state->dump, ofproto->dpif);
2381 state->done = false;
2386 port_dump_next(const struct ofproto *ofproto_ OVS_UNUSED, void *state_,
2387 struct ofproto_port *port)
2389 struct port_dump_state *state = state_;
2390 struct dpif_port dpif_port;
2392 if (dpif_port_dump_next(&state->dump, &dpif_port)) {
2393 ofproto_port_from_dpif_port(port, &dpif_port);
2396 int error = dpif_port_dump_done(&state->dump);
2398 return error ? error : EOF;
2403 port_dump_done(const struct ofproto *ofproto_ OVS_UNUSED, void *state_)
2405 struct port_dump_state *state = state_;
2408 dpif_port_dump_done(&state->dump);
2415 port_poll(const struct ofproto *ofproto_, char **devnamep)
2417 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2418 return dpif_port_poll(ofproto->dpif, devnamep);
2422 port_poll_wait(const struct ofproto *ofproto_)
2424 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
2425 dpif_port_poll_wait(ofproto->dpif);
2429 port_is_lacp_current(const struct ofport *ofport_)
2431 const struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
2432 return (ofport->bundle && ofport->bundle->lacp
2433 ? lacp_slave_is_current(ofport->bundle->lacp, ofport)
2437 /* Upcall handling. */
2439 /* Flow miss batching.
2441 * Some dpifs implement operations faster when you hand them off in a batch.
2442 * To allow batching, "struct flow_miss" queues the dpif-related work needed
2443 * for a given flow. Each "struct flow_miss" corresponds to sending one or
2444 * more packets, plus possibly installing the flow in the dpif.
2446 * So far we only batch the operations that affect flow setup time the most.
2447 * It's possible to batch more than that, but the benefit might be minimal. */
2449 struct hmap_node hmap_node;
2451 enum odp_key_fitness key_fitness;
2452 const struct nlattr *key;
2454 ovs_be16 initial_tci;
2455 struct list packets;
2458 struct flow_miss_op {
2459 struct dpif_op dpif_op;
2460 struct subfacet *subfacet;
2463 /* Sends an OFPT_PACKET_IN message for 'packet' of type OFPR_NO_MATCH to each
2464 * OpenFlow controller as necessary according to their individual
2465 * configurations. */
2467 send_packet_in_miss(struct ofproto_dpif *ofproto, const struct ofpbuf *packet,
2468 const struct flow *flow)
2470 struct ofputil_packet_in pin;
2472 pin.packet = packet->data;
2473 pin.packet_len = packet->size;
2474 pin.reason = OFPR_NO_MATCH;
2475 pin.controller_id = 0;
2480 pin.send_len = 0; /* not used for flow table misses */
2482 flow_get_metadata(flow, &pin.fmd);
2484 /* Registers aren't meaningful on a miss. */
2485 memset(pin.fmd.reg_masks, 0, sizeof pin.fmd.reg_masks);
2487 connmgr_send_packet_in(ofproto->up.connmgr, &pin);
2491 process_special(struct ofproto_dpif *ofproto, const struct flow *flow,
2492 const struct ofpbuf *packet)
2494 struct ofport_dpif *ofport = get_ofp_port(ofproto, flow->in_port);
2500 if (ofport->cfm && cfm_should_process_flow(ofport->cfm, flow)) {
2502 cfm_process_heartbeat(ofport->cfm, packet);
2505 } else if (ofport->bundle && ofport->bundle->lacp
2506 && flow->dl_type == htons(ETH_TYPE_LACP)) {
2508 lacp_process_packet(ofport->bundle->lacp, ofport, packet);
2511 } else if (ofproto->stp && stp_should_process_flow(flow)) {
2513 stp_process_packet(ofport, packet);
2520 static struct flow_miss *
2521 flow_miss_create(struct hmap *todo, const struct flow *flow,
2522 enum odp_key_fitness key_fitness,
2523 const struct nlattr *key, size_t key_len,
2524 ovs_be16 initial_tci)
2526 uint32_t hash = flow_hash(flow, 0);
2527 struct flow_miss *miss;
2529 HMAP_FOR_EACH_WITH_HASH (miss, hmap_node, hash, todo) {
2530 if (flow_equal(&miss->flow, flow)) {
2535 miss = xmalloc(sizeof *miss);
2536 hmap_insert(todo, &miss->hmap_node, hash);
2538 miss->key_fitness = key_fitness;
2540 miss->key_len = key_len;
2541 miss->initial_tci = initial_tci;
2542 list_init(&miss->packets);
2547 handle_flow_miss(struct ofproto_dpif *ofproto, struct flow_miss *miss,
2548 struct flow_miss_op *ops, size_t *n_ops)
2550 const struct flow *flow = &miss->flow;
2551 struct ofpbuf *packet, *next_packet;
2552 struct subfacet *subfacet;
2553 struct facet *facet;
2555 facet = facet_lookup_valid(ofproto, flow);
2557 struct rule_dpif *rule;
2559 rule = rule_dpif_lookup(ofproto, flow, 0);
2561 /* Don't send a packet-in if OFPUTIL_PC_NO_PACKET_IN asserted. */
2562 struct ofport_dpif *port = get_ofp_port(ofproto, flow->in_port);
2564 if (port->up.pp.config & OFPUTIL_PC_NO_PACKET_IN) {
2565 COVERAGE_INC(ofproto_dpif_no_packet_in);
2566 /* XXX install 'drop' flow entry */
2570 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16,
2574 LIST_FOR_EACH (packet, list_node, &miss->packets) {
2575 send_packet_in_miss(ofproto, packet, flow);
2581 facet = facet_create(rule, flow);
2584 subfacet = subfacet_create(facet,
2585 miss->key_fitness, miss->key, miss->key_len,
2588 LIST_FOR_EACH_SAFE (packet, next_packet, list_node, &miss->packets) {
2589 struct dpif_flow_stats stats;
2590 struct flow_miss_op *op;
2591 struct dpif_execute *execute;
2593 ofproto->n_matches++;
2595 if (facet->rule->up.cr.priority == FAIL_OPEN_PRIORITY) {
2597 * Extra-special case for fail-open mode.
2599 * We are in fail-open mode and the packet matched the fail-open
2600 * rule, but we are connected to a controller too. We should send
2601 * the packet up to the controller in the hope that it will try to
2602 * set up a flow and thereby allow us to exit fail-open.
2604 * See the top-level comment in fail-open.c for more information.
2606 send_packet_in_miss(ofproto, packet, flow);
2609 if (!facet->may_install || !subfacet->actions) {
2610 subfacet_make_actions(subfacet, packet);
2613 dpif_flow_stats_extract(&facet->flow, packet, &stats);
2614 subfacet_update_stats(subfacet, &stats);
2616 if (!subfacet->actions_len) {
2617 /* No actions to execute, so skip talking to the dpif. */
2621 if (flow->vlan_tci != subfacet->initial_tci) {
2622 /* This packet was received on a VLAN splinter port. We added
2623 * a VLAN to the packet to make the packet resemble the flow,
2624 * but the actions were composed assuming that the packet
2625 * contained no VLAN. So, we must remove the VLAN header from
2626 * the packet before trying to execute the actions. */
2627 eth_pop_vlan(packet);
2630 op = &ops[(*n_ops)++];
2631 execute = &op->dpif_op.u.execute;
2632 op->subfacet = subfacet;
2633 op->dpif_op.type = DPIF_OP_EXECUTE;
2634 execute->key = miss->key;
2635 execute->key_len = miss->key_len;
2636 execute->actions = (facet->may_install
2638 : xmemdup(subfacet->actions,
2639 subfacet->actions_len));
2640 execute->actions_len = subfacet->actions_len;
2641 execute->packet = packet;
2644 if (facet->may_install && subfacet->key_fitness != ODP_FIT_TOO_LITTLE) {
2645 struct flow_miss_op *op = &ops[(*n_ops)++];
2646 struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
2648 op->subfacet = subfacet;
2649 op->dpif_op.type = DPIF_OP_FLOW_PUT;
2650 put->flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
2651 put->key = miss->key;
2652 put->key_len = miss->key_len;
2653 put->actions = subfacet->actions;
2654 put->actions_len = subfacet->actions_len;
2659 /* Like odp_flow_key_to_flow(), this function converts the 'key_len' bytes of
2660 * OVS_KEY_ATTR_* attributes in 'key' to a flow structure in 'flow' and returns
2661 * an ODP_FIT_* value that indicates how well 'key' fits our expectations for
2662 * what a flow key should contain.
2664 * This function also includes some logic to help make VLAN splinters
2665 * transparent to the rest of the upcall processing logic. In particular, if
2666 * the extracted in_port is a VLAN splinter port, it replaces flow->in_port by
2667 * the "real" port, sets flow->vlan_tci correctly for the VLAN of the VLAN
2668 * splinter port, and pushes a VLAN header onto 'packet' (if it is nonnull).
2670 * Sets '*initial_tci' to the VLAN TCI with which the packet was really
2671 * received, that is, the actual VLAN TCI extracted by odp_flow_key_to_flow().
2672 * (This differs from the value returned in flow->vlan_tci only for packets
2673 * received on VLAN splinters.)
2675 static enum odp_key_fitness
2676 ofproto_dpif_extract_flow_key(const struct ofproto_dpif *ofproto,
2677 const struct nlattr *key, size_t key_len,
2678 struct flow *flow, ovs_be16 *initial_tci,
2679 struct ofpbuf *packet)
2681 enum odp_key_fitness fitness;
2685 fitness = odp_flow_key_to_flow(key, key_len, flow);
2686 if (fitness == ODP_FIT_ERROR) {
2689 *initial_tci = flow->vlan_tci;
2691 realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port, &vid);
2693 /* Cause the flow to be processed as if it came in on the real device
2694 * with the VLAN device's VLAN ID. */
2695 flow->in_port = realdev;
2696 flow->vlan_tci = htons((vid & VLAN_VID_MASK) | VLAN_CFI);
2698 /* Make the packet resemble the flow, so that it gets sent to an
2699 * OpenFlow controller properly, so that it looks correct for
2700 * sFlow, and so that flow_extract() will get the correct vlan_tci
2701 * if it is called on 'packet'.
2703 * The allocated space inside 'packet' probably also contains
2704 * 'key', that is, both 'packet' and 'key' are probably part of a
2705 * struct dpif_upcall (see the large comment on that structure
2706 * definition), so pushing data on 'packet' is in general not a
2707 * good idea since it could overwrite 'key' or free it as a side
2708 * effect. However, it's OK in this special case because we know
2709 * that 'packet' is inside a Netlink attribute: pushing 4 bytes
2710 * will just overwrite the 4-byte "struct nlattr", which is fine
2711 * since we don't need that header anymore. */
2712 eth_push_vlan(packet, flow->vlan_tci);
2715 /* Let the caller know that we can't reproduce 'key' from 'flow'. */
2716 if (fitness == ODP_FIT_PERFECT) {
2717 fitness = ODP_FIT_TOO_MUCH;
2725 handle_miss_upcalls(struct ofproto_dpif *ofproto, struct dpif_upcall *upcalls,
2728 struct dpif_upcall *upcall;
2729 struct flow_miss *miss, *next_miss;
2730 struct flow_miss_op flow_miss_ops[FLOW_MISS_MAX_BATCH * 2];
2731 struct dpif_op *dpif_ops[FLOW_MISS_MAX_BATCH * 2];
2740 /* Construct the to-do list.
2742 * This just amounts to extracting the flow from each packet and sticking
2743 * the packets that have the same flow in the same "flow_miss" structure so
2744 * that we can process them together. */
2746 for (upcall = upcalls; upcall < &upcalls[n_upcalls]; upcall++) {
2747 enum odp_key_fitness fitness;
2748 struct flow_miss *miss;
2749 ovs_be16 initial_tci;
2752 /* Obtain metadata and check userspace/kernel agreement on flow match,
2753 * then set 'flow''s header pointers. */
2754 fitness = ofproto_dpif_extract_flow_key(ofproto,
2755 upcall->key, upcall->key_len,
2756 &flow, &initial_tci,
2758 if (fitness == ODP_FIT_ERROR) {
2759 ofpbuf_delete(upcall->packet);
2762 flow_extract(upcall->packet, flow.skb_priority, flow.tun_id,
2763 flow.in_port, &flow);
2765 /* Handle 802.1ag, LACP, and STP specially. */
2766 if (process_special(ofproto, &flow, upcall->packet)) {
2767 ofproto_update_local_port_stats(&ofproto->up,
2768 0, upcall->packet->size);
2769 ofpbuf_delete(upcall->packet);
2770 ofproto->n_matches++;
2774 /* Add other packets to a to-do list. */
2775 miss = flow_miss_create(&todo, &flow, fitness,
2776 upcall->key, upcall->key_len, initial_tci);
2777 list_push_back(&miss->packets, &upcall->packet->list_node);
2780 /* Process each element in the to-do list, constructing the set of
2781 * operations to batch. */
2783 HMAP_FOR_EACH (miss, hmap_node, &todo) {
2784 handle_flow_miss(ofproto, miss, flow_miss_ops, &n_ops);
2786 assert(n_ops <= ARRAY_SIZE(flow_miss_ops));
2788 /* Execute batch. */
2789 for (i = 0; i < n_ops; i++) {
2790 dpif_ops[i] = &flow_miss_ops[i].dpif_op;
2792 dpif_operate(ofproto->dpif, dpif_ops, n_ops);
2794 /* Free memory and update facets. */
2795 for (i = 0; i < n_ops; i++) {
2796 struct flow_miss_op *op = &flow_miss_ops[i];
2797 struct dpif_execute *execute;
2799 switch (op->dpif_op.type) {
2800 case DPIF_OP_EXECUTE:
2801 execute = &op->dpif_op.u.execute;
2802 if (op->subfacet->actions != execute->actions) {
2803 free((struct nlattr *) execute->actions);
2807 case DPIF_OP_FLOW_PUT:
2808 if (!op->dpif_op.error) {
2809 op->subfacet->installed = true;
2814 HMAP_FOR_EACH_SAFE (miss, next_miss, hmap_node, &todo) {
2815 ofpbuf_list_delete(&miss->packets);
2816 hmap_remove(&todo, &miss->hmap_node);
2819 hmap_destroy(&todo);
2823 handle_userspace_upcall(struct ofproto_dpif *ofproto,
2824 struct dpif_upcall *upcall)
2826 struct user_action_cookie cookie;
2827 enum odp_key_fitness fitness;
2828 ovs_be16 initial_tci;
2831 memcpy(&cookie, &upcall->userdata, sizeof(cookie));
2833 fitness = ofproto_dpif_extract_flow_key(ofproto, upcall->key,
2834 upcall->key_len, &flow,
2835 &initial_tci, upcall->packet);
2836 if (fitness == ODP_FIT_ERROR) {
2837 ofpbuf_delete(upcall->packet);
2841 if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
2842 if (ofproto->sflow) {
2843 dpif_sflow_received(ofproto->sflow, upcall->packet, &flow,
2847 VLOG_WARN_RL(&rl, "invalid user cookie : 0x%"PRIx64, upcall->userdata);
2849 ofpbuf_delete(upcall->packet);
2853 handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
2855 struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
2859 assert (max_batch <= FLOW_MISS_MAX_BATCH);
2862 for (i = 0; i < max_batch; i++) {
2863 struct dpif_upcall *upcall = &misses[n_misses];
2866 error = dpif_recv(ofproto->dpif, upcall);
2871 switch (upcall->type) {
2872 case DPIF_UC_ACTION:
2873 handle_userspace_upcall(ofproto, upcall);
2877 /* Handle it later. */
2881 case DPIF_N_UC_TYPES:
2883 VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
2889 handle_miss_upcalls(ofproto, misses, n_misses);
2894 /* Flow expiration. */
2896 static int subfacet_max_idle(const struct ofproto_dpif *);
2897 static void update_stats(struct ofproto_dpif *);
2898 static void rule_expire(struct rule_dpif *);
2899 static void expire_subfacets(struct ofproto_dpif *, int dp_max_idle);
2901 /* This function is called periodically by run(). Its job is to collect
2902 * updates for the flows that have been installed into the datapath, most
2903 * importantly when they last were used, and then use that information to
2904 * expire flows that have not been used recently.
2906 * Returns the number of milliseconds after which it should be called again. */
2908 expire(struct ofproto_dpif *ofproto)
2910 struct rule_dpif *rule, *next_rule;
2911 struct oftable *table;
2914 /* Update stats for each flow in the datapath. */
2915 update_stats(ofproto);
2917 /* Expire subfacets that have been idle too long. */
2918 dp_max_idle = subfacet_max_idle(ofproto);
2919 expire_subfacets(ofproto, dp_max_idle);
2921 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
2922 OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
2923 struct cls_cursor cursor;
2925 cls_cursor_init(&cursor, &table->cls, NULL);
2926 CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
2931 /* All outstanding data in existing flows has been accounted, so it's a
2932 * good time to do bond rebalancing. */
2933 if (ofproto->has_bonded_bundles) {
2934 struct ofbundle *bundle;
2936 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
2938 bond_rebalance(bundle->bond, &ofproto->revalidate_set);
2943 return MIN(dp_max_idle, 1000);
2946 /* Update 'packet_count', 'byte_count', and 'used' members of installed facets.
2948 * This function also pushes statistics updates to rules which each facet
2949 * resubmits into. Generally these statistics will be accurate. However, if a
2950 * facet changes the rule it resubmits into at some time in between
2951 * update_stats() runs, it is possible that statistics accrued to the
2952 * old rule will be incorrectly attributed to the new rule. This could be
2953 * avoided by calling update_stats() whenever rules are created or
2954 * deleted. However, the performance impact of making so many calls to the
2955 * datapath do not justify the benefit of having perfectly accurate statistics.
2958 update_stats(struct ofproto_dpif *p)
2960 const struct dpif_flow_stats *stats;
2961 struct dpif_flow_dump dump;
2962 const struct nlattr *key;
2965 dpif_flow_dump_start(&dump, p->dpif);
2966 while (dpif_flow_dump_next(&dump, &key, &key_len, NULL, NULL, &stats)) {
2967 struct subfacet *subfacet;
2969 subfacet = subfacet_find(p, key, key_len);
2970 if (subfacet && subfacet->installed) {
2971 struct facet *facet = subfacet->facet;
2973 if (stats->n_packets >= subfacet->dp_packet_count) {
2974 uint64_t extra = stats->n_packets - subfacet->dp_packet_count;
2975 facet->packet_count += extra;
2977 VLOG_WARN_RL(&rl, "unexpected packet count from the datapath");
2980 if (stats->n_bytes >= subfacet->dp_byte_count) {
2981 facet->byte_count += stats->n_bytes - subfacet->dp_byte_count;
2983 VLOG_WARN_RL(&rl, "unexpected byte count from datapath");
2986 subfacet->dp_packet_count = stats->n_packets;
2987 subfacet->dp_byte_count = stats->n_bytes;
2989 facet->tcp_flags |= stats->tcp_flags;
2991 subfacet_update_time(subfacet, stats->used);
2992 facet_account(facet);
2993 facet_push_stats(facet);
2995 if (!VLOG_DROP_WARN(&rl)) {
2999 odp_flow_key_format(key, key_len, &s);
3000 VLOG_WARN("unexpected flow from datapath %s", ds_cstr(&s));
3004 COVERAGE_INC(facet_unexpected);
3005 /* There's a flow in the datapath that we know nothing about, or a
3006 * flow that shouldn't be installed but was anyway. Delete it. */
3007 dpif_flow_del(p->dpif, key, key_len, NULL);
3010 dpif_flow_dump_done(&dump);
3013 /* Calculates and returns the number of milliseconds of idle time after which
3014 * subfacets should expire from the datapath. When a subfacet expires, we fold
3015 * its statistics into its facet, and when a facet's last subfacet expires, we
3016 * fold its statistic into its rule. */
3018 subfacet_max_idle(const struct ofproto_dpif *ofproto)
3021 * Idle time histogram.
3023 * Most of the time a switch has a relatively small number of subfacets.
3024 * When this is the case we might as well keep statistics for all of them
3025 * in userspace and to cache them in the kernel datapath for performance as
3028 * As the number of subfacets increases, the memory required to maintain
3029 * statistics about them in userspace and in the kernel becomes
3030 * significant. However, with a large number of subfacets it is likely
3031 * that only a few of them are "heavy hitters" that consume a large amount
3032 * of bandwidth. At this point, only heavy hitters are worth caching in
3033 * the kernel and maintaining in userspaces; other subfacets we can
3036 * The technique used to compute the idle time is to build a histogram with
3037 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each subfacet
3038 * that is installed in the kernel gets dropped in the appropriate bucket.
3039 * After the histogram has been built, we compute the cutoff so that only
3040 * the most-recently-used 1% of subfacets (but at least
3041 * ofproto->up.flow_eviction_threshold flows) are kept cached. At least
3042 * the most-recently-used bucket of subfacets is kept, so actually an
3043 * arbitrary number of subfacets can be kept in any given expiration run
3044 * (though the next run will delete most of those unless they receive
3047 * This requires a second pass through the subfacets, in addition to the
3048 * pass made by update_stats(), because the former function never looks at
3049 * uninstallable subfacets.
3051 enum { BUCKET_WIDTH = ROUND_UP(100, TIME_UPDATE_INTERVAL) };
3052 enum { N_BUCKETS = 5000 / BUCKET_WIDTH };
3053 int buckets[N_BUCKETS] = { 0 };
3054 int total, subtotal, bucket;
3055 struct subfacet *subfacet;
3059 total = hmap_count(&ofproto->subfacets);
3060 if (total <= ofproto->up.flow_eviction_threshold) {
3061 return N_BUCKETS * BUCKET_WIDTH;
3064 /* Build histogram. */
3066 HMAP_FOR_EACH (subfacet, hmap_node, &ofproto->subfacets) {
3067 long long int idle = now - subfacet->used;
3068 int bucket = (idle <= 0 ? 0
3069 : idle >= BUCKET_WIDTH * N_BUCKETS ? N_BUCKETS - 1
3070 : (unsigned int) idle / BUCKET_WIDTH);
3074 /* Find the first bucket whose flows should be expired. */
3075 subtotal = bucket = 0;
3077 subtotal += buckets[bucket++];
3078 } while (bucket < N_BUCKETS &&
3079 subtotal < MAX(ofproto->up.flow_eviction_threshold, total / 100));
3081 if (VLOG_IS_DBG_ENABLED()) {
3085 ds_put_cstr(&s, "keep");
3086 for (i = 0; i < N_BUCKETS; i++) {
3088 ds_put_cstr(&s, ", drop");
3091 ds_put_format(&s, " %d:%d", i * BUCKET_WIDTH, buckets[i]);
3094 VLOG_INFO("%s: %s (msec:count)", ofproto->up.name, ds_cstr(&s));
3098 return bucket * BUCKET_WIDTH;
3102 expire_subfacets(struct ofproto_dpif *ofproto, int dp_max_idle)
3104 long long int cutoff = time_msec() - dp_max_idle;
3105 struct subfacet *subfacet, *next_subfacet;
3107 HMAP_FOR_EACH_SAFE (subfacet, next_subfacet, hmap_node,
3108 &ofproto->subfacets) {
3109 if (subfacet->used < cutoff) {
3110 subfacet_destroy(subfacet);
3115 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
3116 * then delete it entirely. */
3118 rule_expire(struct rule_dpif *rule)
3120 struct facet *facet, *next_facet;
3124 /* Has 'rule' expired? */
3126 if (rule->up.hard_timeout
3127 && now > rule->up.modified + rule->up.hard_timeout * 1000) {
3128 reason = OFPRR_HARD_TIMEOUT;
3129 } else if (rule->up.idle_timeout
3130 && now > rule->up.used + rule->up.idle_timeout * 1000) {
3131 reason = OFPRR_IDLE_TIMEOUT;
3136 COVERAGE_INC(ofproto_dpif_expired);
3138 /* Update stats. (This is a no-op if the rule expired due to an idle
3139 * timeout, because that only happens when the rule has no facets left.) */
3140 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
3141 facet_remove(facet);
3144 /* Get rid of the rule. */
3145 ofproto_rule_expire(&rule->up, reason);
3150 /* Creates and returns a new facet owned by 'rule', given a 'flow'.
3152 * The caller must already have determined that no facet with an identical
3153 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
3154 * the ofproto's classifier table.
3156 * The facet will initially have no subfacets. The caller should create (at
3157 * least) one subfacet with subfacet_create(). */
3158 static struct facet *
3159 facet_create(struct rule_dpif *rule, const struct flow *flow)
3161 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3162 struct facet *facet;
3164 facet = xzalloc(sizeof *facet);
3165 facet->used = time_msec();
3166 hmap_insert(&ofproto->facets, &facet->hmap_node, flow_hash(flow, 0));
3167 list_push_back(&rule->facets, &facet->list_node);
3169 facet->flow = *flow;
3170 list_init(&facet->subfacets);
3171 netflow_flow_init(&facet->nf_flow);
3172 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, facet->used);
3178 facet_free(struct facet *facet)
3183 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
3184 * 'packet', which arrived on 'in_port'.
3186 * Takes ownership of 'packet'. */
3188 execute_odp_actions(struct ofproto_dpif *ofproto, const struct flow *flow,
3189 const struct nlattr *odp_actions, size_t actions_len,
3190 struct ofpbuf *packet)
3192 struct odputil_keybuf keybuf;
3196 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
3197 odp_flow_key_from_flow(&key, flow);
3199 error = dpif_execute(ofproto->dpif, key.data, key.size,
3200 odp_actions, actions_len, packet);
3202 ofpbuf_delete(packet);
3206 /* Remove 'facet' from 'ofproto' and free up the associated memory:
3208 * - If 'facet' was installed in the datapath, uninstalls it and updates its
3209 * rule's statistics, via subfacet_uninstall().
3211 * - Removes 'facet' from its rule and from ofproto->facets.
3214 facet_remove(struct facet *facet)
3216 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3217 struct subfacet *subfacet, *next_subfacet;
3219 assert(!list_is_empty(&facet->subfacets));
3221 /* First uninstall all of the subfacets to get final statistics. */
3222 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3223 subfacet_uninstall(subfacet);
3226 /* Flush the final stats to the rule.
3228 * This might require us to have at least one subfacet around so that we
3229 * can use its actions for accounting in facet_account(), which is why we
3230 * have uninstalled but not yet destroyed the subfacets. */
3231 facet_flush_stats(facet);
3233 /* Now we're really all done so destroy everything. */
3234 LIST_FOR_EACH_SAFE (subfacet, next_subfacet, list_node,
3235 &facet->subfacets) {
3236 subfacet_destroy__(subfacet);
3238 hmap_remove(&ofproto->facets, &facet->hmap_node);
3239 list_remove(&facet->list_node);
3244 facet_account(struct facet *facet)
3246 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3248 struct subfacet *subfacet;
3249 const struct nlattr *a;
3253 if (facet->byte_count <= facet->accounted_bytes) {
3256 n_bytes = facet->byte_count - facet->accounted_bytes;
3257 facet->accounted_bytes = facet->byte_count;
3259 /* Feed information from the active flows back into the learning table to
3260 * ensure that table is always in sync with what is actually flowing
3261 * through the datapath. */
3262 if (facet->has_learn || facet->has_normal
3263 || (facet->has_fin_timeout
3264 && facet->tcp_flags & (TCP_FIN | TCP_RST))) {
3265 struct action_xlate_ctx ctx;
3267 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3268 facet->flow.vlan_tci,
3269 facet->rule, facet->tcp_flags, NULL);
3270 ctx.may_learn = true;
3271 ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
3272 facet->rule->up.n_actions));
3275 if (!facet->has_normal || !ofproto->has_bonded_bundles) {
3279 /* This loop feeds byte counters to bond_account() for rebalancing to use
3280 * as a basis. We also need to track the actual VLAN on which the packet
3281 * is going to be sent to ensure that it matches the one passed to
3282 * bond_choose_output_slave(). (Otherwise, we will account to the wrong
3285 * We use the actions from an arbitrary subfacet because they should all
3286 * be equally valid for our purpose. */
3287 subfacet = CONTAINER_OF(list_front(&facet->subfacets),
3288 struct subfacet, list_node);
3289 vlan_tci = facet->flow.vlan_tci;
3290 NL_ATTR_FOR_EACH_UNSAFE (a, left,
3291 subfacet->actions, subfacet->actions_len) {
3292 const struct ovs_action_push_vlan *vlan;
3293 struct ofport_dpif *port;
3295 switch (nl_attr_type(a)) {
3296 case OVS_ACTION_ATTR_OUTPUT:
3297 port = get_odp_port(ofproto, nl_attr_get_u32(a));
3298 if (port && port->bundle && port->bundle->bond) {
3299 bond_account(port->bundle->bond, &facet->flow,
3300 vlan_tci_to_vid(vlan_tci), n_bytes);
3304 case OVS_ACTION_ATTR_POP_VLAN:
3305 vlan_tci = htons(0);
3308 case OVS_ACTION_ATTR_PUSH_VLAN:
3309 vlan = nl_attr_get(a);
3310 vlan_tci = vlan->vlan_tci;
3316 /* Returns true if the only action for 'facet' is to send to the controller.
3317 * (We don't report NetFlow expiration messages for such facets because they
3318 * are just part of the control logic for the network, not real traffic). */
3320 facet_is_controller_flow(struct facet *facet)
3323 && facet->rule->up.n_actions == 1
3324 && action_outputs_to_port(&facet->rule->up.actions[0],
3325 htons(OFPP_CONTROLLER)));
3328 /* Folds all of 'facet''s statistics into its rule. Also updates the
3329 * accounting ofhook and emits a NetFlow expiration if appropriate. All of
3330 * 'facet''s statistics in the datapath should have been zeroed and folded into
3331 * its packet and byte counts before this function is called. */
3333 facet_flush_stats(struct facet *facet)
3335 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3336 struct subfacet *subfacet;
3338 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3339 assert(!subfacet->dp_byte_count);
3340 assert(!subfacet->dp_packet_count);
3343 facet_push_stats(facet);
3344 facet_account(facet);
3346 if (ofproto->netflow && !facet_is_controller_flow(facet)) {
3347 struct ofexpired expired;
3348 expired.flow = facet->flow;
3349 expired.packet_count = facet->packet_count;
3350 expired.byte_count = facet->byte_count;
3351 expired.used = facet->used;
3352 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
3355 facet->rule->packet_count += facet->packet_count;
3356 facet->rule->byte_count += facet->byte_count;
3358 /* Reset counters to prevent double counting if 'facet' ever gets
3360 facet_reset_counters(facet);
3362 netflow_flow_clear(&facet->nf_flow);
3363 facet->tcp_flags = 0;
3366 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3367 * Returns it if found, otherwise a null pointer.
3369 * The returned facet might need revalidation; use facet_lookup_valid()
3370 * instead if that is important. */
3371 static struct facet *
3372 facet_find(struct ofproto_dpif *ofproto, const struct flow *flow)
3374 struct facet *facet;
3376 HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
3378 if (flow_equal(flow, &facet->flow)) {
3386 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
3387 * Returns it if found, otherwise a null pointer.
3389 * The returned facet is guaranteed to be valid. */
3390 static struct facet *
3391 facet_lookup_valid(struct ofproto_dpif *ofproto, const struct flow *flow)
3393 struct facet *facet = facet_find(ofproto, flow);
3395 /* The facet we found might not be valid, since we could be in need of
3396 * revalidation. If it is not valid, don't return it. */
3398 && (ofproto->need_revalidate
3399 || tag_set_intersects(&ofproto->revalidate_set, facet->tags))
3400 && !facet_revalidate(facet)) {
3401 COVERAGE_INC(facet_invalidated);
3409 facet_check_consistency(struct facet *facet)
3411 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 15);
3413 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3415 struct rule_dpif *rule;
3416 struct subfacet *subfacet;
3417 bool may_log = false;
3420 /* Check the rule for consistency. */
3421 rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3423 if (!VLOG_DROP_WARN(&rl)) {
3424 char *s = flow_to_string(&facet->flow);
3425 VLOG_WARN("%s: facet should not exist", s);
3429 } else if (rule != facet->rule) {
3430 may_log = !VLOG_DROP_WARN(&rl);
3436 flow_format(&s, &facet->flow);
3437 ds_put_format(&s, ": facet associated with wrong rule (was "
3438 "table=%"PRIu8",", facet->rule->up.table_id);
3439 cls_rule_format(&facet->rule->up.cr, &s);
3440 ds_put_format(&s, ") (should have been table=%"PRIu8",",
3442 cls_rule_format(&rule->up.cr, &s);
3443 ds_put_char(&s, ')');
3445 VLOG_WARN("%s", ds_cstr(&s));
3452 /* Check the datapath actions for consistency. */
3453 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3454 struct action_xlate_ctx ctx;
3455 struct ofpbuf *odp_actions;
3456 bool actions_changed;
3457 bool should_install;
3459 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3460 subfacet->initial_tci, rule, 0, NULL);
3461 odp_actions = xlate_actions(&ctx, rule->up.actions,
3462 rule->up.n_actions);
3464 should_install = (ctx.may_set_up_flow
3465 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3466 if (!should_install && !subfacet->installed) {
3467 /* The actions for uninstallable flows may vary from one packet to
3468 * the next, so don't compare the actions. */
3472 actions_changed = (subfacet->actions_len != odp_actions->size
3473 || memcmp(subfacet->actions, odp_actions->data,
3474 subfacet->actions_len));
3475 if (should_install != subfacet->installed || actions_changed) {
3477 may_log = !VLOG_DROP_WARN(&rl);
3482 struct odputil_keybuf keybuf;
3487 subfacet_get_key(subfacet, &keybuf, &key);
3488 odp_flow_key_format(key.data, key.size, &s);
3490 ds_put_cstr(&s, ": inconsistency in subfacet");
3491 if (should_install != subfacet->installed) {
3492 enum odp_key_fitness fitness = subfacet->key_fitness;
3494 ds_put_format(&s, " (should%s have been installed)",
3495 should_install ? "" : " not");
3496 ds_put_format(&s, " (may_set_up_flow=%s, fitness=%s)",
3497 ctx.may_set_up_flow ? "true" : "false",
3498 odp_key_fitness_to_string(fitness));
3500 if (actions_changed) {
3501 ds_put_cstr(&s, " (actions were: ");
3502 format_odp_actions(&s, subfacet->actions,
3503 subfacet->actions_len);
3504 ds_put_cstr(&s, ") (correct actions: ");
3505 format_odp_actions(&s, odp_actions->data,
3507 ds_put_char(&s, ')');
3509 ds_put_cstr(&s, " (actions: ");
3510 format_odp_actions(&s, subfacet->actions,
3511 subfacet->actions_len);
3512 ds_put_char(&s, ')');
3514 VLOG_WARN("%s", ds_cstr(&s));
3520 ofpbuf_delete(odp_actions);
3526 /* Re-searches the classifier for 'facet':
3528 * - If the rule found is different from 'facet''s current rule, moves
3529 * 'facet' to the new rule and recompiles its actions.
3531 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
3532 * where it is and recompiles its actions anyway.
3534 * - If there is none, destroys 'facet'.
3536 * Returns true if 'facet' still exists, false if it has been destroyed. */
3538 facet_revalidate(struct facet *facet)
3540 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3542 struct nlattr *odp_actions;
3545 struct actions *new_actions;
3547 struct action_xlate_ctx ctx;
3548 struct rule_dpif *new_rule;
3549 struct subfacet *subfacet;
3550 bool actions_changed;
3553 COVERAGE_INC(facet_revalidate);
3555 /* Determine the new rule. */
3556 new_rule = rule_dpif_lookup(ofproto, &facet->flow, 0);
3558 /* No new rule, so delete the facet. */
3559 facet_remove(facet);
3563 /* Calculate new datapath actions.
3565 * We do not modify any 'facet' state yet, because we might need to, e.g.,
3566 * emit a NetFlow expiration and, if so, we need to have the old state
3567 * around to properly compose it. */
3569 /* If the datapath actions changed or the installability changed,
3570 * then we need to talk to the datapath. */
3573 memset(&ctx, 0, sizeof ctx);
3574 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3575 struct ofpbuf *odp_actions;
3576 bool should_install;
3578 action_xlate_ctx_init(&ctx, ofproto, &facet->flow,
3579 subfacet->initial_tci, new_rule, 0, NULL);
3580 odp_actions = xlate_actions(&ctx, new_rule->up.actions,
3581 new_rule->up.n_actions);
3582 actions_changed = (subfacet->actions_len != odp_actions->size
3583 || memcmp(subfacet->actions, odp_actions->data,
3584 subfacet->actions_len));
3586 should_install = (ctx.may_set_up_flow
3587 && subfacet->key_fitness != ODP_FIT_TOO_LITTLE);
3588 if (actions_changed || should_install != subfacet->installed) {
3589 if (should_install) {
3590 struct dpif_flow_stats stats;
3592 subfacet_install(subfacet,
3593 odp_actions->data, odp_actions->size, &stats);
3594 subfacet_update_stats(subfacet, &stats);
3596 subfacet_uninstall(subfacet);
3600 new_actions = xcalloc(list_size(&facet->subfacets),
3601 sizeof *new_actions);
3603 new_actions[i].odp_actions = xmemdup(odp_actions->data,
3605 new_actions[i].actions_len = odp_actions->size;
3608 ofpbuf_delete(odp_actions);
3612 facet_flush_stats(facet);
3615 /* Update 'facet' now that we've taken care of all the old state. */
3616 facet->tags = ctx.tags;
3617 facet->nf_flow.output_iface = ctx.nf_output_iface;
3618 facet->may_install = ctx.may_set_up_flow;
3619 facet->has_learn = ctx.has_learn;
3620 facet->has_normal = ctx.has_normal;
3621 facet->has_fin_timeout = ctx.has_fin_timeout;
3622 facet->mirrors = ctx.mirrors;
3625 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
3626 if (new_actions[i].odp_actions) {
3627 free(subfacet->actions);
3628 subfacet->actions = new_actions[i].odp_actions;
3629 subfacet->actions_len = new_actions[i].actions_len;
3635 if (facet->rule != new_rule) {
3636 COVERAGE_INC(facet_changed_rule);
3637 list_remove(&facet->list_node);
3638 list_push_back(&new_rule->facets, &facet->list_node);
3639 facet->rule = new_rule;
3640 facet->used = new_rule->up.created;
3641 facet->prev_used = facet->used;
3647 /* Updates 'facet''s used time. Caller is responsible for calling
3648 * facet_push_stats() to update the flows which 'facet' resubmits into. */
3650 facet_update_time(struct facet *facet, long long int used)
3652 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3653 if (used > facet->used) {
3655 ofproto_rule_update_used(&facet->rule->up, used);
3656 netflow_flow_update_time(ofproto->netflow, &facet->nf_flow, used);
3661 facet_reset_counters(struct facet *facet)
3663 facet->packet_count = 0;
3664 facet->byte_count = 0;
3665 facet->prev_packet_count = 0;
3666 facet->prev_byte_count = 0;
3667 facet->accounted_bytes = 0;
3671 facet_push_stats(struct facet *facet)
3673 uint64_t new_packets, new_bytes;
3675 assert(facet->packet_count >= facet->prev_packet_count);
3676 assert(facet->byte_count >= facet->prev_byte_count);
3677 assert(facet->used >= facet->prev_used);
3679 new_packets = facet->packet_count - facet->prev_packet_count;
3680 new_bytes = facet->byte_count - facet->prev_byte_count;
3682 if (new_packets || new_bytes || facet->used > facet->prev_used) {
3683 facet->prev_packet_count = facet->packet_count;
3684 facet->prev_byte_count = facet->byte_count;
3685 facet->prev_used = facet->used;
3687 flow_push_stats(facet->rule, &facet->flow,
3688 new_packets, new_bytes, facet->used);
3690 update_mirror_stats(ofproto_dpif_cast(facet->rule->up.ofproto),
3691 facet->mirrors, new_packets, new_bytes);
3695 struct ofproto_push {
3696 struct action_xlate_ctx ctx;
3703 push_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
3705 struct ofproto_push *push = CONTAINER_OF(ctx, struct ofproto_push, ctx);
3708 rule->packet_count += push->packets;
3709 rule->byte_count += push->bytes;
3710 ofproto_rule_update_used(&rule->up, push->used);
3714 /* Pushes flow statistics to the rules which 'flow' resubmits into given
3715 * 'rule''s actions and mirrors. */
3717 flow_push_stats(struct rule_dpif *rule,
3718 const struct flow *flow, uint64_t packets, uint64_t bytes,
3721 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3722 struct ofproto_push push;
3724 push.packets = packets;
3728 ofproto_rule_update_used(&rule->up, used);
3730 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, rule,
3732 push.ctx.resubmit_hook = push_resubmit;
3733 ofpbuf_delete(xlate_actions(&push.ctx,
3734 rule->up.actions, rule->up.n_actions));
3739 static struct subfacet *
3740 subfacet_find__(struct ofproto_dpif *ofproto,
3741 const struct nlattr *key, size_t key_len, uint32_t key_hash,
3742 const struct flow *flow)
3744 struct subfacet *subfacet;
3746 HMAP_FOR_EACH_WITH_HASH (subfacet, hmap_node, key_hash,
3747 &ofproto->subfacets) {
3749 ? (subfacet->key_len == key_len
3750 && !memcmp(key, subfacet->key, key_len))
3751 : flow_equal(flow, &subfacet->facet->flow)) {
3759 /* Searches 'facet' (within 'ofproto') for a subfacet with the specified
3760 * 'key_fitness', 'key', and 'key_len'. Returns the existing subfacet if
3761 * there is one, otherwise creates and returns a new subfacet.
3763 * If the returned subfacet is new, then subfacet->actions will be NULL, in
3764 * which case the caller must populate the actions with
3765 * subfacet_make_actions(). */
3766 static struct subfacet *
3767 subfacet_create(struct facet *facet, enum odp_key_fitness key_fitness,
3768 const struct nlattr *key, size_t key_len, ovs_be16 initial_tci)
3770 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3771 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3772 struct subfacet *subfacet;
3774 subfacet = subfacet_find__(ofproto, key, key_len, key_hash, &facet->flow);
3776 if (subfacet->facet == facet) {
3780 /* This shouldn't happen. */
3781 VLOG_ERR_RL(&rl, "subfacet with wrong facet");
3782 subfacet_destroy(subfacet);
3785 subfacet = xzalloc(sizeof *subfacet);
3786 hmap_insert(&ofproto->subfacets, &subfacet->hmap_node, key_hash);
3787 list_push_back(&facet->subfacets, &subfacet->list_node);
3788 subfacet->facet = facet;
3789 subfacet->used = time_msec();
3790 subfacet->key_fitness = key_fitness;
3791 if (key_fitness != ODP_FIT_PERFECT) {
3792 subfacet->key = xmemdup(key, key_len);
3793 subfacet->key_len = key_len;
3795 subfacet->installed = false;
3796 subfacet->initial_tci = initial_tci;
3801 /* Searches 'ofproto' for a subfacet with the given 'key', 'key_len', and
3802 * 'flow'. Returns the subfacet if one exists, otherwise NULL. */
3803 static struct subfacet *
3804 subfacet_find(struct ofproto_dpif *ofproto,
3805 const struct nlattr *key, size_t key_len)
3807 uint32_t key_hash = odp_flow_key_hash(key, key_len);
3808 enum odp_key_fitness fitness;
3811 fitness = odp_flow_key_to_flow(key, key_len, &flow);
3812 if (fitness == ODP_FIT_ERROR) {
3816 return subfacet_find__(ofproto, key, key_len, key_hash, &flow);
3819 /* Uninstalls 'subfacet' from the datapath, if it is installed, removes it from
3820 * its facet within 'ofproto', and frees it. */
3822 subfacet_destroy__(struct subfacet *subfacet)
3824 struct facet *facet = subfacet->facet;
3825 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3827 subfacet_uninstall(subfacet);
3828 hmap_remove(&ofproto->subfacets, &subfacet->hmap_node);
3829 list_remove(&subfacet->list_node);
3830 free(subfacet->key);
3831 free(subfacet->actions);
3835 /* Destroys 'subfacet', as with subfacet_destroy__(), and then if this was the
3836 * last remaining subfacet in its facet destroys the facet too. */
3838 subfacet_destroy(struct subfacet *subfacet)
3840 struct facet *facet = subfacet->facet;
3842 if (list_is_singleton(&facet->subfacets)) {
3843 /* facet_remove() needs at least one subfacet (it will remove it). */
3844 facet_remove(facet);
3846 subfacet_destroy__(subfacet);
3850 /* Initializes 'key' with the sequence of OVS_KEY_ATTR_* Netlink attributes
3851 * that can be used to refer to 'subfacet'. The caller must provide 'keybuf'
3852 * for use as temporary storage. */
3854 subfacet_get_key(struct subfacet *subfacet, struct odputil_keybuf *keybuf,
3857 if (!subfacet->key) {
3858 ofpbuf_use_stack(key, keybuf, sizeof *keybuf);
3859 odp_flow_key_from_flow(key, &subfacet->facet->flow);
3861 ofpbuf_use_const(key, subfacet->key, subfacet->key_len);
3865 /* Composes the datapath actions for 'subfacet' based on its rule's actions. */
3867 subfacet_make_actions(struct subfacet *subfacet, const struct ofpbuf *packet)
3869 struct facet *facet = subfacet->facet;
3870 struct rule_dpif *rule = facet->rule;
3871 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3872 struct ofpbuf *odp_actions;
3873 struct action_xlate_ctx ctx;
3875 action_xlate_ctx_init(&ctx, ofproto, &facet->flow, subfacet->initial_tci,
3877 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
3878 facet->tags = ctx.tags;
3879 facet->may_install = ctx.may_set_up_flow;
3880 facet->has_learn = ctx.has_learn;
3881 facet->has_normal = ctx.has_normal;
3882 facet->has_fin_timeout = ctx.has_fin_timeout;
3883 facet->nf_flow.output_iface = ctx.nf_output_iface;
3884 facet->mirrors = ctx.mirrors;
3886 if (subfacet->actions_len != odp_actions->size
3887 || memcmp(subfacet->actions, odp_actions->data, odp_actions->size)) {
3888 free(subfacet->actions);
3889 subfacet->actions_len = odp_actions->size;
3890 subfacet->actions = xmemdup(odp_actions->data, odp_actions->size);
3893 ofpbuf_delete(odp_actions);
3896 /* Updates 'subfacet''s datapath flow, setting its actions to 'actions_len'
3897 * bytes of actions in 'actions'. If 'stats' is non-null, statistics counters
3898 * in the datapath will be zeroed and 'stats' will be updated with traffic new
3899 * since 'subfacet' was last updated.
3901 * Returns 0 if successful, otherwise a positive errno value. */
3903 subfacet_install(struct subfacet *subfacet,
3904 const struct nlattr *actions, size_t actions_len,
3905 struct dpif_flow_stats *stats)
3907 struct facet *facet = subfacet->facet;
3908 struct ofproto_dpif *ofproto = ofproto_dpif_cast(facet->rule->up.ofproto);
3909 struct odputil_keybuf keybuf;
3910 enum dpif_flow_put_flags flags;
3914 flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
3916 flags |= DPIF_FP_ZERO_STATS;
3919 subfacet_get_key(subfacet, &keybuf, &key);
3920 ret = dpif_flow_put(ofproto->dpif, flags, key.data, key.size,
3921 actions, actions_len, stats);
3924 subfacet_reset_dp_stats(subfacet, stats);
3930 /* If 'subfacet' is installed in the datapath, uninstalls it. */
3932 subfacet_uninstall(struct subfacet *subfacet)
3934 if (subfacet->installed) {
3935 struct rule_dpif *rule = subfacet->facet->rule;
3936 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
3937 struct odputil_keybuf keybuf;
3938 struct dpif_flow_stats stats;
3942 subfacet_get_key(subfacet, &keybuf, &key);
3943 error = dpif_flow_del(ofproto->dpif, key.data, key.size, &stats);
3944 subfacet_reset_dp_stats(subfacet, &stats);
3946 subfacet_update_stats(subfacet, &stats);
3948 subfacet->installed = false;
3950 assert(subfacet->dp_packet_count == 0);
3951 assert(subfacet->dp_byte_count == 0);
3955 /* Resets 'subfacet''s datapath statistics counters. This should be called
3956 * when 'subfacet''s statistics are cleared in the datapath. If 'stats' is
3957 * non-null, it should contain the statistics returned by dpif when 'subfacet'
3958 * was reset in the datapath. 'stats' will be modified to include only
3959 * statistics new since 'subfacet' was last updated. */
3961 subfacet_reset_dp_stats(struct subfacet *subfacet,
3962 struct dpif_flow_stats *stats)
3965 && subfacet->dp_packet_count <= stats->n_packets
3966 && subfacet->dp_byte_count <= stats->n_bytes) {
3967 stats->n_packets -= subfacet->dp_packet_count;
3968 stats->n_bytes -= subfacet->dp_byte_count;
3971 subfacet->dp_packet_count = 0;
3972 subfacet->dp_byte_count = 0;
3975 /* Updates 'subfacet''s used time. The caller is responsible for calling
3976 * facet_push_stats() to update the flows which 'subfacet' resubmits into. */
3978 subfacet_update_time(struct subfacet *subfacet, long long int used)
3980 if (used > subfacet->used) {
3981 subfacet->used = used;
3982 facet_update_time(subfacet->facet, used);
3986 /* Folds the statistics from 'stats' into the counters in 'subfacet'.
3988 * Because of the meaning of a subfacet's counters, it only makes sense to do
3989 * this if 'stats' are not tracked in the datapath, that is, if 'stats'
3990 * represents a packet that was sent by hand or if it represents statistics
3991 * that have been cleared out of the datapath. */
3993 subfacet_update_stats(struct subfacet *subfacet,
3994 const struct dpif_flow_stats *stats)
3996 if (stats->n_packets || stats->used > subfacet->used) {
3997 struct facet *facet = subfacet->facet;
3999 subfacet_update_time(subfacet, stats->used);
4000 facet->packet_count += stats->n_packets;
4001 facet->byte_count += stats->n_bytes;
4002 facet->tcp_flags |= stats->tcp_flags;
4003 facet_push_stats(facet);
4004 netflow_flow_update_flags(&facet->nf_flow, stats->tcp_flags);
4010 static struct rule_dpif *
4011 rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
4014 struct cls_rule *cls_rule;
4015 struct classifier *cls;
4017 if (table_id >= N_TABLES) {
4021 cls = &ofproto->up.tables[table_id].cls;
4022 if (flow->nw_frag & FLOW_NW_FRAG_ANY
4023 && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
4024 /* For OFPC_NORMAL frag_handling, we must pretend that transport ports
4025 * are unavailable. */
4026 struct flow ofpc_normal_flow = *flow;
4027 ofpc_normal_flow.tp_src = htons(0);
4028 ofpc_normal_flow.tp_dst = htons(0);
4029 cls_rule = classifier_lookup(cls, &ofpc_normal_flow);
4031 cls_rule = classifier_lookup(cls, flow);
4033 return rule_dpif_cast(rule_from_cls_rule(cls_rule));
4037 complete_operation(struct rule_dpif *rule)
4039 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4041 rule_invalidate(rule);
4043 struct dpif_completion *c = xmalloc(sizeof *c);
4044 c->op = rule->up.pending;
4045 list_push_back(&ofproto->completions, &c->list_node);
4047 ofoperation_complete(rule->up.pending, 0);
4051 static struct rule *
4054 struct rule_dpif *rule = xmalloc(sizeof *rule);
4059 rule_dealloc(struct rule *rule_)
4061 struct rule_dpif *rule = rule_dpif_cast(rule_);
4066 rule_construct(struct rule *rule_)
4068 struct rule_dpif *rule = rule_dpif_cast(rule_);
4069 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4070 struct rule_dpif *victim;
4074 error = validate_actions(rule->up.actions, rule->up.n_actions,
4075 &rule->up.cr.flow, ofproto->max_ports);
4080 rule->packet_count = 0;
4081 rule->byte_count = 0;
4083 victim = rule_dpif_cast(ofoperation_get_victim(rule->up.pending));
4084 if (victim && !list_is_empty(&victim->facets)) {
4085 struct facet *facet;
4087 rule->facets = victim->facets;
4088 list_moved(&rule->facets);
4089 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4090 /* XXX: We're only clearing our local counters here. It's possible
4091 * that quite a few packets are unaccounted for in the datapath
4092 * statistics. These will be accounted to the new rule instead of
4093 * cleared as required. This could be fixed by clearing out the
4094 * datapath statistics for this facet, but currently it doesn't
4096 facet_reset_counters(facet);
4100 /* Must avoid list_moved() in this case. */
4101 list_init(&rule->facets);
4104 table_id = rule->up.table_id;
4105 rule->tag = (victim ? victim->tag
4107 : rule_calculate_tag(&rule->up.cr.flow, &rule->up.cr.wc,
4108 ofproto->tables[table_id].basis));
4110 complete_operation(rule);
4115 rule_destruct(struct rule *rule_)
4117 struct rule_dpif *rule = rule_dpif_cast(rule_);
4118 struct facet *facet, *next_facet;
4120 LIST_FOR_EACH_SAFE (facet, next_facet, list_node, &rule->facets) {
4121 facet_revalidate(facet);
4124 complete_operation(rule);
4128 rule_get_stats(struct rule *rule_, uint64_t *packets, uint64_t *bytes)
4130 struct rule_dpif *rule = rule_dpif_cast(rule_);
4131 struct facet *facet;
4133 /* Start from historical data for 'rule' itself that are no longer tracked
4134 * in facets. This counts, for example, facets that have expired. */
4135 *packets = rule->packet_count;
4136 *bytes = rule->byte_count;
4138 /* Add any statistics that are tracked by facets. This includes
4139 * statistical data recently updated by ofproto_update_stats() as well as
4140 * stats for packets that were executed "by hand" via dpif_execute(). */
4141 LIST_FOR_EACH (facet, list_node, &rule->facets) {
4142 *packets += facet->packet_count;
4143 *bytes += facet->byte_count;
4148 rule_execute(struct rule *rule_, const struct flow *flow,
4149 struct ofpbuf *packet)
4151 struct rule_dpif *rule = rule_dpif_cast(rule_);
4152 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4153 struct action_xlate_ctx ctx;
4154 struct ofpbuf *odp_actions;
4157 action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci,
4158 rule, packet_get_tcp_flags(packet, flow), packet);
4159 odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
4160 size = packet->size;
4161 if (execute_odp_actions(ofproto, flow, odp_actions->data,
4162 odp_actions->size, packet)) {
4163 rule->packet_count++;
4164 rule->byte_count += size;
4165 flow_push_stats(rule, flow, 1, size, time_msec());
4167 ofpbuf_delete(odp_actions);
4173 rule_modify_actions(struct rule *rule_)
4175 struct rule_dpif *rule = rule_dpif_cast(rule_);
4176 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
4179 error = validate_actions(rule->up.actions, rule->up.n_actions,
4180 &rule->up.cr.flow, ofproto->max_ports);
4182 ofoperation_complete(rule->up.pending, error);
4186 complete_operation(rule);
4189 /* Sends 'packet' out 'ofport'.
4190 * May modify 'packet'.
4191 * Returns 0 if successful, otherwise a positive errno value. */
4193 send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
4195 const struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport->up.ofproto);
4196 struct ofpbuf key, odp_actions;
4197 struct odputil_keybuf keybuf;
4202 flow_extract((struct ofpbuf *) packet, 0, 0, 0, &flow);
4203 odp_port = vsp_realdev_to_vlandev(ofproto, ofport->odp_port,
4205 if (odp_port != ofport->odp_port) {
4206 eth_pop_vlan(packet);
4207 flow.vlan_tci = htons(0);
4210 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
4211 odp_flow_key_from_flow(&key, &flow);
4213 ofpbuf_init(&odp_actions, 32);
4214 compose_sflow_action(ofproto, &odp_actions, &flow, odp_port);
4216 nl_msg_put_u32(&odp_actions, OVS_ACTION_ATTR_OUTPUT, odp_port);
4217 error = dpif_execute(ofproto->dpif,
4219 odp_actions.data, odp_actions.size,
4221 ofpbuf_uninit(&odp_actions);
4224 VLOG_WARN_RL(&rl, "%s: failed to send packet on port %"PRIu32" (%s)",
4225 ofproto->up.name, odp_port, strerror(error));
4227 ofproto_update_local_port_stats(ofport->up.ofproto, packet->size, 0);
4231 /* OpenFlow to datapath action translation. */
4233 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
4234 struct action_xlate_ctx *ctx);
4235 static void xlate_normal(struct action_xlate_ctx *);
4238 put_userspace_action(const struct ofproto_dpif *ofproto,
4239 struct ofpbuf *odp_actions,
4240 const struct flow *flow,
4241 const struct user_action_cookie *cookie)
4245 pid = dpif_port_get_pid(ofproto->dpif,
4246 ofp_port_to_odp_port(flow->in_port));
4248 return odp_put_userspace_action(pid, cookie, odp_actions);
4251 /* Compose SAMPLE action for sFlow. */
4253 compose_sflow_action(const struct ofproto_dpif *ofproto,
4254 struct ofpbuf *odp_actions,
4255 const struct flow *flow,
4258 uint32_t port_ifindex;
4259 uint32_t probability;
4260 struct user_action_cookie cookie;
4261 size_t sample_offset, actions_offset;
4262 int cookie_offset, n_output;
4264 if (!ofproto->sflow || flow->in_port == OFPP_NONE) {
4268 if (odp_port == OVSP_NONE) {
4272 port_ifindex = dpif_sflow_odp_port_to_ifindex(ofproto->sflow, odp_port);
4276 sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
4278 /* Number of packets out of UINT_MAX to sample. */
4279 probability = dpif_sflow_get_probability(ofproto->sflow);
4280 nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
4282 actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
4284 cookie.type = USER_ACTION_COOKIE_SFLOW;
4285 cookie.data = port_ifindex;
4286 cookie.n_output = n_output;
4287 cookie.vlan_tci = 0;
4288 cookie_offset = put_userspace_action(ofproto, odp_actions, flow, &cookie);
4290 nl_msg_end_nested(odp_actions, actions_offset);
4291 nl_msg_end_nested(odp_actions, sample_offset);
4292 return cookie_offset;
4295 /* SAMPLE action must be first action in any given list of actions.
4296 * At this point we do not have all information required to build it. So try to
4297 * build sample action as complete as possible. */
4299 add_sflow_action(struct action_xlate_ctx *ctx)
4301 ctx->user_cookie_offset = compose_sflow_action(ctx->ofproto,
4303 &ctx->flow, OVSP_NONE);
4304 ctx->sflow_odp_port = 0;
4305 ctx->sflow_n_outputs = 0;
4308 /* Fix SAMPLE action according to data collected while composing ODP actions.
4309 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
4310 * USERSPACE action's user-cookie which is required for sflow. */
4312 fix_sflow_action(struct action_xlate_ctx *ctx)
4314 const struct flow *base = &ctx->base_flow;
4315 struct user_action_cookie *cookie;
4317 if (!ctx->user_cookie_offset) {
4321 cookie = ofpbuf_at(ctx->odp_actions, ctx->user_cookie_offset,
4323 assert(cookie != NULL);
4324 assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
4326 if (ctx->sflow_n_outputs) {
4327 cookie->data = dpif_sflow_odp_port_to_ifindex(ctx->ofproto->sflow,
4328 ctx->sflow_odp_port);
4330 if (ctx->sflow_n_outputs >= 255) {
4331 cookie->n_output = 255;
4333 cookie->n_output = ctx->sflow_n_outputs;
4335 cookie->vlan_tci = base->vlan_tci;
4339 compose_output_action__(struct action_xlate_ctx *ctx, uint16_t ofp_port,
4342 const struct ofport_dpif *ofport = get_ofp_port(ctx->ofproto, ofp_port);
4343 uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
4344 ovs_be16 flow_vlan_tci = ctx->flow.vlan_tci;
4345 uint8_t flow_nw_tos = ctx->flow.nw_tos;
4349 struct priority_to_dscp *pdscp;
4351 if (ofport->up.pp.config & OFPUTIL_PC_NO_FWD
4352 || (check_stp && !stp_forward_in_state(ofport->stp_state))) {
4356 pdscp = get_priority(ofport, ctx->flow.skb_priority);
4358 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4359 ctx->flow.nw_tos |= pdscp->dscp;
4362 /* We may not have an ofport record for this port, but it doesn't hurt
4363 * to allow forwarding to it anyhow. Maybe such a port will appear
4364 * later and we're pre-populating the flow table. */
4367 out_port = vsp_realdev_to_vlandev(ctx->ofproto, odp_port,
4368 ctx->flow.vlan_tci);
4369 if (out_port != odp_port) {
4370 ctx->flow.vlan_tci = htons(0);
4372 commit_odp_actions(&ctx->flow, &ctx->base_flow, ctx->odp_actions);
4373 nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port);
4375 ctx->sflow_odp_port = odp_port;
4376 ctx->sflow_n_outputs++;
4377 ctx->nf_output_iface = ofp_port;
4378 ctx->flow.vlan_tci = flow_vlan_tci;
4379 ctx->flow.nw_tos = flow_nw_tos;
4383 compose_output_action(struct action_xlate_ctx *ctx, uint16_t ofp_port)
4385 compose_output_action__(ctx, ofp_port, true);
4389 xlate_table_action(struct action_xlate_ctx *ctx,
4390 uint16_t in_port, uint8_t table_id)
4392 if (ctx->recurse < MAX_RESUBMIT_RECURSION) {
4393 struct ofproto_dpif *ofproto = ctx->ofproto;
4394 struct rule_dpif *rule;
4395 uint16_t old_in_port;
4396 uint8_t old_table_id;
4398 old_table_id = ctx->table_id;
4399 ctx->table_id = table_id;
4401 /* Look up a flow with 'in_port' as the input port. */
4402 old_in_port = ctx->flow.in_port;
4403 ctx->flow.in_port = in_port;
4404 rule = rule_dpif_lookup(ofproto, &ctx->flow, table_id);
4407 if (table_id > 0 && table_id < N_TABLES) {
4408 struct table_dpif *table = &ofproto->tables[table_id];
4409 if (table->other_table) {
4412 : rule_calculate_tag(&ctx->flow,
4413 &table->other_table->wc,
4418 /* Restore the original input port. Otherwise OFPP_NORMAL and
4419 * OFPP_IN_PORT will have surprising behavior. */
4420 ctx->flow.in_port = old_in_port;
4422 if (ctx->resubmit_hook) {
4423 ctx->resubmit_hook(ctx, rule);
4427 struct rule_dpif *old_rule = ctx->rule;
4431 do_xlate_actions(rule->up.actions, rule->up.n_actions, ctx);
4432 ctx->rule = old_rule;
4436 ctx->table_id = old_table_id;
4438 static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1);
4440 VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times",
4441 MAX_RESUBMIT_RECURSION);
4442 ctx->max_resubmit_trigger = true;
4447 xlate_resubmit_table(struct action_xlate_ctx *ctx,
4448 const struct nx_action_resubmit *nar)
4453 in_port = (nar->in_port == htons(OFPP_IN_PORT)
4455 : ntohs(nar->in_port));
4456 table_id = nar->table == 255 ? ctx->table_id : nar->table;
4458 xlate_table_action(ctx, in_port, table_id);
4462 flood_packets(struct action_xlate_ctx *ctx, bool all)
4464 struct ofport_dpif *ofport;
4466 HMAP_FOR_EACH (ofport, up.hmap_node, &ctx->ofproto->up.ports) {
4467 uint16_t ofp_port = ofport->up.ofp_port;
4469 if (ofp_port == ctx->flow.in_port) {
4474 compose_output_action__(ctx, ofp_port, false);
4475 } else if (!(ofport->up.pp.config & OFPUTIL_PC_NO_FLOOD)) {
4476 compose_output_action(ctx, ofp_port);
4480 ctx->nf_output_iface = NF_OUT_FLOOD;
4484 execute_controller_action(struct action_xlate_ctx *ctx, int len,
4485 enum ofp_packet_in_reason reason,
4486 uint16_t controller_id)
4488 struct ofputil_packet_in pin;
4489 struct ofpbuf *packet;
4491 ctx->may_set_up_flow = false;
4496 packet = ofpbuf_clone(ctx->packet);
4498 if (packet->l2 && packet->l3) {
4499 struct eth_header *eh;
4501 eth_pop_vlan(packet);
4503 assert(eh->eth_type == ctx->flow.dl_type);
4504 memcpy(eh->eth_src, ctx->flow.dl_src, sizeof eh->eth_src);
4505 memcpy(eh->eth_dst, ctx->flow.dl_dst, sizeof eh->eth_dst);
4507 if (ctx->flow.vlan_tci & htons(VLAN_CFI)) {
4508 eth_push_vlan(packet, ctx->flow.vlan_tci);
4512 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4513 packet_set_ipv4(packet, ctx->flow.nw_src, ctx->flow.nw_dst,
4514 ctx->flow.nw_tos, ctx->flow.nw_ttl);
4518 if (ctx->flow.nw_proto == IPPROTO_TCP) {
4519 packet_set_tcp_port(packet, ctx->flow.tp_src,
4521 } else if (ctx->flow.nw_proto == IPPROTO_UDP) {
4522 packet_set_udp_port(packet, ctx->flow.tp_src,
4529 pin.packet = packet->data;
4530 pin.packet_len = packet->size;
4531 pin.reason = reason;
4532 pin.controller_id = controller_id;
4533 pin.table_id = ctx->table_id;
4534 pin.cookie = ctx->rule ? ctx->rule->up.flow_cookie : 0;
4537 flow_get_metadata(&ctx->flow, &pin.fmd);
4539 connmgr_send_packet_in(ctx->ofproto->up.connmgr, &pin);
4540 ofpbuf_delete(packet);
4544 compose_dec_ttl(struct action_xlate_ctx *ctx)
4546 if (ctx->flow.dl_type != htons(ETH_TYPE_IP) &&
4547 ctx->flow.dl_type != htons(ETH_TYPE_IPV6)) {
4551 if (ctx->flow.nw_ttl > 1) {
4555 execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0);
4557 /* Stop processing for current table. */
4563 xlate_output_action__(struct action_xlate_ctx *ctx,
4564 uint16_t port, uint16_t max_len)
4566 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
4568 ctx->nf_output_iface = NF_OUT_DROP;
4572 compose_output_action(ctx, ctx->flow.in_port);
4575 xlate_table_action(ctx, ctx->flow.in_port, ctx->table_id);
4581 flood_packets(ctx, false);
4584 flood_packets(ctx, true);
4586 case OFPP_CONTROLLER:
4587 execute_controller_action(ctx, max_len, OFPR_ACTION, 0);
4593 if (port != ctx->flow.in_port) {
4594 compose_output_action(ctx, port);
4599 if (prev_nf_output_iface == NF_OUT_FLOOD) {
4600 ctx->nf_output_iface = NF_OUT_FLOOD;
4601 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
4602 ctx->nf_output_iface = prev_nf_output_iface;
4603 } else if (prev_nf_output_iface != NF_OUT_DROP &&
4604 ctx->nf_output_iface != NF_OUT_FLOOD) {
4605 ctx->nf_output_iface = NF_OUT_MULTI;
4610 xlate_output_reg_action(struct action_xlate_ctx *ctx,
4611 const struct nx_action_output_reg *naor)
4613 struct mf_subfield src;
4616 nxm_decode(&src, naor->src, naor->ofs_nbits);
4617 ofp_port = mf_get_subfield(&src, &ctx->flow);
4619 if (ofp_port <= UINT16_MAX) {
4620 xlate_output_action__(ctx, ofp_port, ntohs(naor->max_len));
4625 xlate_output_action(struct action_xlate_ctx *ctx,
4626 const struct ofp_action_output *oao)
4628 xlate_output_action__(ctx, ntohs(oao->port), ntohs(oao->max_len));
4632 xlate_enqueue_action(struct action_xlate_ctx *ctx,
4633 const struct ofp_action_enqueue *oae)
4636 uint32_t flow_priority, priority;
4639 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(oae->queue_id),
4642 /* Fall back to ordinary output action. */
4643 xlate_output_action__(ctx, ntohs(oae->port), 0);
4647 /* Figure out datapath output port. */
4648 ofp_port = ntohs(oae->port);
4649 if (ofp_port == OFPP_IN_PORT) {
4650 ofp_port = ctx->flow.in_port;
4651 } else if (ofp_port == ctx->flow.in_port) {
4655 /* Add datapath actions. */
4656 flow_priority = ctx->flow.skb_priority;
4657 ctx->flow.skb_priority = priority;
4658 compose_output_action(ctx, ofp_port);
4659 ctx->flow.skb_priority = flow_priority;
4661 /* Update NetFlow output port. */
4662 if (ctx->nf_output_iface == NF_OUT_DROP) {
4663 ctx->nf_output_iface = ofp_port;
4664 } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
4665 ctx->nf_output_iface = NF_OUT_MULTI;
4670 xlate_set_queue_action(struct action_xlate_ctx *ctx,
4671 const struct nx_action_set_queue *nasq)
4676 error = dpif_queue_to_priority(ctx->ofproto->dpif, ntohl(nasq->queue_id),
4679 /* Couldn't translate queue to a priority, so ignore. A warning
4680 * has already been logged. */
4684 ctx->flow.skb_priority = priority;
4687 struct xlate_reg_state {
4693 xlate_autopath(struct action_xlate_ctx *ctx,
4694 const struct nx_action_autopath *naa)
4696 uint16_t ofp_port = ntohl(naa->id);
4697 struct ofport_dpif *port = get_ofp_port(ctx->ofproto, ofp_port);
4699 if (!port || !port->bundle) {
4700 ofp_port = OFPP_NONE;
4701 } else if (port->bundle->bond) {
4702 /* Autopath does not support VLAN hashing. */
4703 struct ofport_dpif *slave = bond_choose_output_slave(
4704 port->bundle->bond, &ctx->flow, 0, &ctx->tags);
4706 ofp_port = slave->up.ofp_port;
4709 autopath_execute(naa, &ctx->flow, ofp_port);
4713 slave_enabled_cb(uint16_t ofp_port, void *ofproto_)
4715 struct ofproto_dpif *ofproto = ofproto_;
4716 struct ofport_dpif *port;
4726 case OFPP_CONTROLLER: /* Not supported by the bundle action. */
4729 port = get_ofp_port(ofproto, ofp_port);
4730 return port ? port->may_enable : false;
4735 xlate_learn_action(struct action_xlate_ctx *ctx,
4736 const struct nx_action_learn *learn)
4738 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
4739 struct ofputil_flow_mod fm;
4742 learn_execute(learn, &ctx->flow, &fm);
4744 error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
4745 if (error && !VLOG_DROP_WARN(&rl)) {
4746 VLOG_WARN("learning action failed to modify flow table (%s)",
4747 ofperr_get_name(error));
4753 /* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4754 * means "infinite". */
4756 reduce_timeout(uint16_t max, uint16_t *timeout)
4758 if (max && (!*timeout || *timeout > max)) {
4764 xlate_fin_timeout(struct action_xlate_ctx *ctx,
4765 const struct nx_action_fin_timeout *naft)
4767 if (ctx->tcp_flags & (TCP_FIN | TCP_RST) && ctx->rule) {
4768 struct rule_dpif *rule = ctx->rule;
4770 reduce_timeout(ntohs(naft->fin_idle_timeout), &rule->up.idle_timeout);
4771 reduce_timeout(ntohs(naft->fin_hard_timeout), &rule->up.hard_timeout);
4776 may_receive(const struct ofport_dpif *port, struct action_xlate_ctx *ctx)
4778 if (port->up.pp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
4779 ? OFPUTIL_PC_NO_RECV_STP
4780 : OFPUTIL_PC_NO_RECV)) {
4784 /* Only drop packets here if both forwarding and learning are
4785 * disabled. If just learning is enabled, we need to have
4786 * OFPP_NORMAL and the learning action have a look at the packet
4787 * before we can drop it. */
4788 if (!stp_forward_in_state(port->stp_state)
4789 && !stp_learn_in_state(port->stp_state)) {
4797 do_xlate_actions(const union ofp_action *in, size_t n_in,
4798 struct action_xlate_ctx *ctx)
4800 const struct ofport_dpif *port;
4801 const union ofp_action *ia;
4802 bool was_evictable = true;
4805 port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
4806 if (port && !may_receive(port, ctx)) {
4807 /* Drop this flow. */
4812 /* Don't let the rule we're working on get evicted underneath us. */
4813 was_evictable = ctx->rule->up.evictable;
4814 ctx->rule->up.evictable = false;
4816 OFPUTIL_ACTION_FOR_EACH_UNSAFE (ia, left, in, n_in) {
4817 const struct ofp_action_dl_addr *oada;
4818 const struct nx_action_resubmit *nar;
4819 const struct nx_action_set_tunnel *nast;
4820 const struct nx_action_set_queue *nasq;
4821 const struct nx_action_multipath *nam;
4822 const struct nx_action_autopath *naa;
4823 const struct nx_action_bundle *nab;
4824 const struct nx_action_output_reg *naor;
4825 const struct nx_action_controller *nac;
4826 enum ofputil_action_code code;
4833 code = ofputil_decode_action_unsafe(ia);
4835 case OFPUTIL_OFPAT10_OUTPUT:
4836 xlate_output_action(ctx, &ia->output);
4839 case OFPUTIL_OFPAT10_SET_VLAN_VID:
4840 ctx->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
4841 ctx->flow.vlan_tci |= ia->vlan_vid.vlan_vid | htons(VLAN_CFI);
4844 case OFPUTIL_OFPAT10_SET_VLAN_PCP:
4845 ctx->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
4846 ctx->flow.vlan_tci |= htons(
4847 (ia->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT) | VLAN_CFI);
4850 case OFPUTIL_OFPAT10_STRIP_VLAN:
4851 ctx->flow.vlan_tci = htons(0);
4854 case OFPUTIL_OFPAT10_SET_DL_SRC:
4855 oada = ((struct ofp_action_dl_addr *) ia);
4856 memcpy(ctx->flow.dl_src, oada->dl_addr, ETH_ADDR_LEN);
4859 case OFPUTIL_OFPAT10_SET_DL_DST:
4860 oada = ((struct ofp_action_dl_addr *) ia);
4861 memcpy(ctx->flow.dl_dst, oada->dl_addr, ETH_ADDR_LEN);
4864 case OFPUTIL_OFPAT10_SET_NW_SRC:
4865 ctx->flow.nw_src = ia->nw_addr.nw_addr;
4868 case OFPUTIL_OFPAT10_SET_NW_DST:
4869 ctx->flow.nw_dst = ia->nw_addr.nw_addr;
4872 case OFPUTIL_OFPAT10_SET_NW_TOS:
4873 /* OpenFlow 1.0 only supports IPv4. */
4874 if (ctx->flow.dl_type == htons(ETH_TYPE_IP)) {
4875 ctx->flow.nw_tos &= ~IP_DSCP_MASK;
4876 ctx->flow.nw_tos |= ia->nw_tos.nw_tos & IP_DSCP_MASK;
4880 case OFPUTIL_OFPAT10_SET_TP_SRC:
4881 ctx->flow.tp_src = ia->tp_port.tp_port;
4884 case OFPUTIL_OFPAT10_SET_TP_DST:
4885 ctx->flow.tp_dst = ia->tp_port.tp_port;
4888 case OFPUTIL_OFPAT10_ENQUEUE:
4889 xlate_enqueue_action(ctx, (const struct ofp_action_enqueue *) ia);
4892 case OFPUTIL_NXAST_RESUBMIT:
4893 nar = (const struct nx_action_resubmit *) ia;
4894 xlate_table_action(ctx, ntohs(nar->in_port), ctx->table_id);
4897 case OFPUTIL_NXAST_RESUBMIT_TABLE:
4898 xlate_resubmit_table(ctx, (const struct nx_action_resubmit *) ia);
4901 case OFPUTIL_NXAST_SET_TUNNEL:
4902 nast = (const struct nx_action_set_tunnel *) ia;
4903 tun_id = htonll(ntohl(nast->tun_id));
4904 ctx->flow.tun_id = tun_id;
4907 case OFPUTIL_NXAST_SET_QUEUE:
4908 nasq = (const struct nx_action_set_queue *) ia;
4909 xlate_set_queue_action(ctx, nasq);
4912 case OFPUTIL_NXAST_POP_QUEUE:
4913 ctx->flow.skb_priority = ctx->orig_skb_priority;
4916 case OFPUTIL_NXAST_REG_MOVE:
4917 nxm_execute_reg_move((const struct nx_action_reg_move *) ia,
4921 case OFPUTIL_NXAST_REG_LOAD:
4922 nxm_execute_reg_load((const struct nx_action_reg_load *) ia,
4926 case OFPUTIL_NXAST_NOTE:
4927 /* Nothing to do. */
4930 case OFPUTIL_NXAST_SET_TUNNEL64:
4931 tun_id = ((const struct nx_action_set_tunnel64 *) ia)->tun_id;
4932 ctx->flow.tun_id = tun_id;
4935 case OFPUTIL_NXAST_MULTIPATH:
4936 nam = (const struct nx_action_multipath *) ia;
4937 multipath_execute(nam, &ctx->flow);
4940 case OFPUTIL_NXAST_AUTOPATH:
4941 naa = (const struct nx_action_autopath *) ia;
4942 xlate_autopath(ctx, naa);
4945 case OFPUTIL_NXAST_BUNDLE:
4946 ctx->ofproto->has_bundle_action = true;
4947 nab = (const struct nx_action_bundle *) ia;
4948 xlate_output_action__(ctx, bundle_execute(nab, &ctx->flow,
4953 case OFPUTIL_NXAST_BUNDLE_LOAD:
4954 ctx->ofproto->has_bundle_action = true;
4955 nab = (const struct nx_action_bundle *) ia;
4956 bundle_execute_load(nab, &ctx->flow, slave_enabled_cb,
4960 case OFPUTIL_NXAST_OUTPUT_REG:
4961 naor = (const struct nx_action_output_reg *) ia;
4962 xlate_output_reg_action(ctx, naor);
4965 case OFPUTIL_NXAST_LEARN:
4966 ctx->has_learn = true;
4967 if (ctx->may_learn) {
4968 xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
4972 case OFPUTIL_NXAST_DEC_TTL:
4973 if (compose_dec_ttl(ctx)) {
4978 case OFPUTIL_NXAST_EXIT:
4982 case OFPUTIL_NXAST_FIN_TIMEOUT:
4983 ctx->has_fin_timeout = true;
4984 xlate_fin_timeout(ctx, (const struct nx_action_fin_timeout *) ia);
4987 case OFPUTIL_NXAST_CONTROLLER:
4988 nac = (const struct nx_action_controller *) ia;
4989 execute_controller_action(ctx, ntohs(nac->max_len), nac->reason,
4990 ntohs(nac->controller_id));
4996 /* We've let OFPP_NORMAL and the learning action look at the packet,
4997 * so drop it now if forwarding is disabled. */
4998 if (port && !stp_forward_in_state(port->stp_state)) {
4999 ofpbuf_clear(ctx->odp_actions);
5000 add_sflow_action(ctx);
5003 ctx->rule->up.evictable = was_evictable;
5008 action_xlate_ctx_init(struct action_xlate_ctx *ctx,
5009 struct ofproto_dpif *ofproto, const struct flow *flow,
5010 ovs_be16 initial_tci, struct rule_dpif *rule,
5011 uint8_t tcp_flags, const struct ofpbuf *packet)
5013 ctx->ofproto = ofproto;
5015 ctx->base_flow = ctx->flow;
5016 ctx->base_flow.tun_id = 0;
5017 ctx->base_flow.vlan_tci = initial_tci;
5019 ctx->packet = packet;
5020 ctx->may_learn = packet != NULL;
5021 ctx->tcp_flags = tcp_flags;
5022 ctx->resubmit_hook = NULL;
5025 static struct ofpbuf *
5026 xlate_actions(struct action_xlate_ctx *ctx,
5027 const union ofp_action *in, size_t n_in)
5029 struct flow orig_flow = ctx->flow;
5031 COVERAGE_INC(ofproto_dpif_xlate);
5033 ctx->odp_actions = ofpbuf_new(512);
5034 ofpbuf_reserve(ctx->odp_actions, NL_A_U32_SIZE);
5036 ctx->may_set_up_flow = true;
5037 ctx->has_learn = false;
5038 ctx->has_normal = false;
5039 ctx->has_fin_timeout = false;
5040 ctx->nf_output_iface = NF_OUT_DROP;
5043 ctx->max_resubmit_trigger = false;
5044 ctx->orig_skb_priority = ctx->flow.skb_priority;
5048 if (ctx->flow.nw_frag & FLOW_NW_FRAG_ANY) {
5049 switch (ctx->ofproto->up.frag_handling) {
5050 case OFPC_FRAG_NORMAL:
5051 /* We must pretend that transport ports are unavailable. */
5052 ctx->flow.tp_src = ctx->base_flow.tp_src = htons(0);
5053 ctx->flow.tp_dst = ctx->base_flow.tp_dst = htons(0);
5056 case OFPC_FRAG_DROP:
5057 return ctx->odp_actions;
5059 case OFPC_FRAG_REASM:
5062 case OFPC_FRAG_NX_MATCH:
5063 /* Nothing to do. */
5066 case OFPC_INVALID_TTL_TO_CONTROLLER:
5071 if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
5072 ctx->may_set_up_flow = false;
5073 return ctx->odp_actions;
5075 static struct vlog_rate_limit trace_rl = VLOG_RATE_LIMIT_INIT(1, 1);
5076 struct flow original_flow = ctx->flow;
5077 ovs_be16 initial_tci = ctx->base_flow.vlan_tci;
5079 add_sflow_action(ctx);
5080 do_xlate_actions(in, n_in, ctx);
5082 if (ctx->max_resubmit_trigger && !ctx->resubmit_hook
5083 && !VLOG_DROP_ERR(&trace_rl)) {
5084 struct ds ds = DS_EMPTY_INITIALIZER;
5086 ofproto_trace(ctx->ofproto, &original_flow, ctx->packet,
5088 VLOG_ERR("Trace triggered by excessive resubmit recursion:\n%s",
5093 if (!connmgr_may_set_up_flow(ctx->ofproto->up.connmgr, &ctx->flow,
5094 ctx->odp_actions->data,
5095 ctx->odp_actions->size)) {
5096 ctx->may_set_up_flow = false;
5098 && connmgr_msg_in_hook(ctx->ofproto->up.connmgr, &ctx->flow,
5100 compose_output_action(ctx, OFPP_LOCAL);
5103 add_mirror_actions(ctx, &orig_flow);
5104 fix_sflow_action(ctx);
5107 return ctx->odp_actions;
5110 /* OFPP_NORMAL implementation. */
5112 static struct ofport_dpif *ofbundle_get_a_port(const struct ofbundle *);
5114 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
5115 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_bundle',
5116 * the bundle on which the packet was received, returns the VLAN to which the
5119 * Both 'vid' and the return value are in the range 0...4095. */
5121 input_vid_to_vlan(const struct ofbundle *in_bundle, uint16_t vid)
5123 switch (in_bundle->vlan_mode) {
5124 case PORT_VLAN_ACCESS:
5125 return in_bundle->vlan;
5128 case PORT_VLAN_TRUNK:
5131 case PORT_VLAN_NATIVE_UNTAGGED:
5132 case PORT_VLAN_NATIVE_TAGGED:
5133 return vid ? vid : in_bundle->vlan;
5140 /* Checks whether a packet with the given 'vid' may ingress on 'in_bundle'.
5141 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
5144 * 'vid' should be the VID obtained from the 802.1Q header that was received as
5145 * part of a packet (specify 0 if there was no 802.1Q header), in the range
5148 input_vid_is_valid(uint16_t vid, struct ofbundle *in_bundle, bool warn)
5150 /* Allow any VID on the OFPP_NONE port. */
5151 if (in_bundle == &ofpp_none_bundle) {
5155 switch (in_bundle->vlan_mode) {
5156 case PORT_VLAN_ACCESS:
5159 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5160 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
5161 "packet received on port %s configured as VLAN "
5162 "%"PRIu16" access port",
5163 in_bundle->ofproto->up.name, vid,
5164 in_bundle->name, in_bundle->vlan);
5170 case PORT_VLAN_NATIVE_UNTAGGED:
5171 case PORT_VLAN_NATIVE_TAGGED:
5173 /* Port must always carry its native VLAN. */
5177 case PORT_VLAN_TRUNK:
5178 if (!ofbundle_includes_vlan(in_bundle, vid)) {
5180 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5181 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" packet "
5182 "received on port %s not configured for trunking "
5184 in_bundle->ofproto->up.name, vid,
5185 in_bundle->name, vid);
5197 /* Given 'vlan', the VLAN that a packet belongs to, and
5198 * 'out_bundle', a bundle on which the packet is to be output, returns the VID
5199 * that should be included in the 802.1Q header. (If the return value is 0,
5200 * then the 802.1Q header should only be included in the packet if there is a
5203 * Both 'vlan' and the return value are in the range 0...4095. */
5205 output_vlan_to_vid(const struct ofbundle *out_bundle, uint16_t vlan)
5207 switch (out_bundle->vlan_mode) {
5208 case PORT_VLAN_ACCESS:
5211 case PORT_VLAN_TRUNK:
5212 case PORT_VLAN_NATIVE_TAGGED:
5215 case PORT_VLAN_NATIVE_UNTAGGED:
5216 return vlan == out_bundle->vlan ? 0 : vlan;
5224 output_normal(struct action_xlate_ctx *ctx, const struct ofbundle *out_bundle,
5227 struct ofport_dpif *port;
5229 ovs_be16 tci, old_tci;
5231 vid = output_vlan_to_vid(out_bundle, vlan);
5232 if (!out_bundle->bond) {
5233 port = ofbundle_get_a_port(out_bundle);
5235 port = bond_choose_output_slave(out_bundle->bond, &ctx->flow,
5238 /* No slaves enabled, so drop packet. */
5243 old_tci = ctx->flow.vlan_tci;
5245 if (tci || out_bundle->use_priority_tags) {
5246 tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
5248 tci |= htons(VLAN_CFI);
5251 ctx->flow.vlan_tci = tci;
5253 compose_output_action(ctx, port->up.ofp_port);
5254 ctx->flow.vlan_tci = old_tci;
5258 mirror_mask_ffs(mirror_mask_t mask)
5260 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
5265 ofbundle_trunks_vlan(const struct ofbundle *bundle, uint16_t vlan)
5267 return (bundle->vlan_mode != PORT_VLAN_ACCESS
5268 && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan)));
5272 ofbundle_includes_vlan(const struct ofbundle *bundle, uint16_t vlan)
5274 return vlan == bundle->vlan || ofbundle_trunks_vlan(bundle, vlan);
5277 /* Returns an arbitrary interface within 'bundle'. */
5278 static struct ofport_dpif *
5279 ofbundle_get_a_port(const struct ofbundle *bundle)
5281 return CONTAINER_OF(list_front(&bundle->ports),
5282 struct ofport_dpif, bundle_node);
5286 vlan_is_mirrored(const struct ofmirror *m, int vlan)
5288 return !m->vlans || bitmap_is_set(m->vlans, vlan);
5291 /* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
5292 * to a VLAN. In general most packets may be mirrored but we want to drop
5293 * protocols that may confuse switches. */
5295 eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
5297 /* If you change this function's behavior, please update corresponding
5298 * documentation in vswitch.xml at the same time. */
5299 if (dst[0] != 0x01) {
5300 /* All the currently banned MACs happen to start with 01 currently, so
5301 * this is a quick way to eliminate most of the good ones. */
5303 if (eth_addr_is_reserved(dst)) {
5304 /* Drop STP, IEEE pause frames, and other reserved protocols
5305 * (01-80-c2-00-00-0x). */
5309 if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
5311 if ((dst[3] & 0xfe) == 0xcc &&
5312 (dst[4] & 0xfe) == 0xcc &&
5313 (dst[5] & 0xfe) == 0xcc) {
5314 /* Drop the following protocols plus others following the same
5317 CDP, VTP, DTP, PAgP (01-00-0c-cc-cc-cc)
5318 Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
5319 STP Uplink Fast (01-00-0c-cd-cd-cd) */
5323 if (!(dst[3] | dst[4] | dst[5])) {
5324 /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
5333 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
5335 struct ofproto_dpif *ofproto = ctx->ofproto;
5336 mirror_mask_t mirrors;
5337 struct ofbundle *in_bundle;
5340 const struct nlattr *a;
5343 in_bundle = lookup_input_bundle(ctx->ofproto, orig_flow->in_port,
5344 ctx->packet != NULL);
5348 mirrors = in_bundle->src_mirrors;
5350 /* Drop frames on bundles reserved for mirroring. */
5351 if (in_bundle->mirror_out) {
5352 if (ctx->packet != NULL) {
5353 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5354 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5355 "%s, which is reserved exclusively for mirroring",
5356 ctx->ofproto->up.name, in_bundle->name);
5362 vid = vlan_tci_to_vid(orig_flow->vlan_tci);
5363 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5366 vlan = input_vid_to_vlan(in_bundle, vid);
5368 /* Look at the output ports to check for destination selections. */
5370 NL_ATTR_FOR_EACH (a, left, ctx->odp_actions->data,
5371 ctx->odp_actions->size) {
5372 enum ovs_action_attr type = nl_attr_type(a);
5373 struct ofport_dpif *ofport;
5375 if (type != OVS_ACTION_ATTR_OUTPUT) {
5379 ofport = get_odp_port(ofproto, nl_attr_get_u32(a));
5380 if (ofport && ofport->bundle) {
5381 mirrors |= ofport->bundle->dst_mirrors;
5389 /* Restore the original packet before adding the mirror actions. */
5390 ctx->flow = *orig_flow;
5395 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5397 if (!vlan_is_mirrored(m, vlan)) {
5398 mirrors &= mirrors - 1;
5402 mirrors &= ~m->dup_mirrors;
5403 ctx->mirrors |= m->dup_mirrors;
5405 output_normal(ctx, m->out, vlan);
5406 } else if (eth_dst_may_rspan(orig_flow->dl_dst)
5407 && vlan != m->out_vlan) {
5408 struct ofbundle *bundle;
5410 HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
5411 if (ofbundle_includes_vlan(bundle, m->out_vlan)
5412 && !bundle->mirror_out) {
5413 output_normal(ctx, bundle, m->out_vlan);
5421 update_mirror_stats(struct ofproto_dpif *ofproto, mirror_mask_t mirrors,
5422 uint64_t packets, uint64_t bytes)
5428 for (; mirrors; mirrors &= mirrors - 1) {
5431 m = ofproto->mirrors[mirror_mask_ffs(mirrors) - 1];
5434 /* In normal circumstances 'm' will not be NULL. However,
5435 * if mirrors are reconfigured, we can temporarily get out
5436 * of sync in facet_revalidate(). We could "correct" the
5437 * mirror list before reaching here, but doing that would
5438 * not properly account the traffic stats we've currently
5439 * accumulated for previous mirror configuration. */
5443 m->packet_count += packets;
5444 m->byte_count += bytes;
5448 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
5449 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
5450 * indicate this; newer upstream kernels use gratuitous ARP requests. */
5452 is_gratuitous_arp(const struct flow *flow)
5454 return (flow->dl_type == htons(ETH_TYPE_ARP)
5455 && eth_addr_is_broadcast(flow->dl_dst)
5456 && (flow->nw_proto == ARP_OP_REPLY
5457 || (flow->nw_proto == ARP_OP_REQUEST
5458 && flow->nw_src == flow->nw_dst)));
5462 update_learning_table(struct ofproto_dpif *ofproto,
5463 const struct flow *flow, int vlan,
5464 struct ofbundle *in_bundle)
5466 struct mac_entry *mac;
5468 /* Don't learn the OFPP_NONE port. */
5469 if (in_bundle == &ofpp_none_bundle) {
5473 if (!mac_learning_may_learn(ofproto->ml, flow->dl_src, vlan)) {
5477 mac = mac_learning_insert(ofproto->ml, flow->dl_src, vlan);
5478 if (is_gratuitous_arp(flow)) {
5479 /* We don't want to learn from gratuitous ARP packets that are
5480 * reflected back over bond slaves so we lock the learning table. */
5481 if (!in_bundle->bond) {
5482 mac_entry_set_grat_arp_lock(mac);
5483 } else if (mac_entry_is_grat_arp_locked(mac)) {
5488 if (mac_entry_is_new(mac) || mac->port.p != in_bundle) {
5489 /* The log messages here could actually be useful in debugging,
5490 * so keep the rate limit relatively high. */
5491 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
5492 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
5493 "on port %s in VLAN %d",
5494 ofproto->up.name, ETH_ADDR_ARGS(flow->dl_src),
5495 in_bundle->name, vlan);
5497 mac->port.p = in_bundle;
5498 tag_set_add(&ofproto->revalidate_set,
5499 mac_learning_changed(ofproto->ml, mac));
5503 static struct ofbundle *
5504 lookup_input_bundle(struct ofproto_dpif *ofproto, uint16_t in_port, bool warn)
5506 struct ofport_dpif *ofport;
5508 /* Special-case OFPP_NONE, which a controller may use as the ingress
5509 * port for traffic that it is sourcing. */
5510 if (in_port == OFPP_NONE) {
5511 return &ofpp_none_bundle;
5514 /* Find the port and bundle for the received packet. */
5515 ofport = get_ofp_port(ofproto, in_port);
5516 if (ofport && ofport->bundle) {
5517 return ofport->bundle;
5520 /* Odd. A few possible reasons here:
5522 * - We deleted a port but there are still a few packets queued up
5525 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
5526 * we don't know about.
5528 * - The ofproto client didn't configure the port as part of a bundle.
5531 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5533 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
5534 "port %"PRIu16, ofproto->up.name, in_port);
5539 /* Determines whether packets in 'flow' within 'ofproto' should be forwarded or
5540 * dropped. Returns true if they may be forwarded, false if they should be
5543 * 'in_port' must be the ofport_dpif that corresponds to flow->in_port.
5544 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
5546 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
5547 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
5548 * checked by input_vid_is_valid().
5550 * May also add tags to '*tags', although the current implementation only does
5551 * so in one special case.
5554 is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
5555 struct ofport_dpif *in_port, uint16_t vlan, tag_type *tags)
5557 struct ofbundle *in_bundle = in_port->bundle;
5559 /* Drop frames for reserved multicast addresses
5560 * only if forward_bpdu option is absent. */
5561 if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
5565 if (in_bundle->bond) {
5566 struct mac_entry *mac;
5568 switch (bond_check_admissibility(in_bundle->bond, in_port,
5569 flow->dl_dst, tags)) {
5576 case BV_DROP_IF_MOVED:
5577 mac = mac_learning_lookup(ofproto->ml, flow->dl_src, vlan, NULL);
5578 if (mac && mac->port.p != in_bundle &&
5579 (!is_gratuitous_arp(flow)
5580 || mac_entry_is_grat_arp_locked(mac))) {
5591 xlate_normal(struct action_xlate_ctx *ctx)
5593 struct ofport_dpif *in_port;
5594 struct ofbundle *in_bundle;
5595 struct mac_entry *mac;
5599 ctx->has_normal = true;
5601 in_bundle = lookup_input_bundle(ctx->ofproto, ctx->flow.in_port,
5602 ctx->packet != NULL);
5607 /* We know 'in_port' exists unless it is "ofpp_none_bundle",
5608 * since lookup_input_bundle() succeeded. */
5609 in_port = get_ofp_port(ctx->ofproto, ctx->flow.in_port);
5611 /* Drop malformed frames. */
5612 if (ctx->flow.dl_type == htons(ETH_TYPE_VLAN) &&
5613 !(ctx->flow.vlan_tci & htons(VLAN_CFI))) {
5614 if (ctx->packet != NULL) {
5615 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5616 VLOG_WARN_RL(&rl, "bridge %s: dropping packet with partial "
5617 "VLAN tag received on port %s",
5618 ctx->ofproto->up.name, in_bundle->name);
5623 /* Drop frames on bundles reserved for mirroring. */
5624 if (in_bundle->mirror_out) {
5625 if (ctx->packet != NULL) {
5626 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5627 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
5628 "%s, which is reserved exclusively for mirroring",
5629 ctx->ofproto->up.name, in_bundle->name);
5635 vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
5636 if (!input_vid_is_valid(vid, in_bundle, ctx->packet != NULL)) {
5639 vlan = input_vid_to_vlan(in_bundle, vid);
5641 /* Check other admissibility requirements. */
5643 !is_admissible(ctx->ofproto, &ctx->flow, in_port, vlan, &ctx->tags)) {
5647 /* Learn source MAC. */
5648 if (ctx->may_learn) {
5649 update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
5652 /* Determine output bundle. */
5653 mac = mac_learning_lookup(ctx->ofproto->ml, ctx->flow.dl_dst, vlan,
5656 if (mac->port.p != in_bundle) {
5657 output_normal(ctx, mac->port.p, vlan);
5660 struct ofbundle *bundle;
5662 HMAP_FOR_EACH (bundle, hmap_node, &ctx->ofproto->bundles) {
5663 if (bundle != in_bundle
5664 && ofbundle_includes_vlan(bundle, vlan)
5665 && bundle->floodable
5666 && !bundle->mirror_out) {
5667 output_normal(ctx, bundle, vlan);
5670 ctx->nf_output_iface = NF_OUT_FLOOD;
5674 /* Optimized flow revalidation.
5676 * It's a difficult problem, in general, to tell which facets need to have
5677 * their actions recalculated whenever the OpenFlow flow table changes. We
5678 * don't try to solve that general problem: for most kinds of OpenFlow flow
5679 * table changes, we recalculate the actions for every facet. This is
5680 * relatively expensive, but it's good enough if the OpenFlow flow table
5681 * doesn't change very often.
5683 * However, we can expect one particular kind of OpenFlow flow table change to
5684 * happen frequently: changes caused by MAC learning. To avoid wasting a lot
5685 * of CPU on revalidating every facet whenever MAC learning modifies the flow
5686 * table, we add a special case that applies to flow tables in which every rule
5687 * has the same form (that is, the same wildcards), except that the table is
5688 * also allowed to have a single "catch-all" flow that matches all packets. We
5689 * optimize this case by tagging all of the facets that resubmit into the table
5690 * and invalidating the same tag whenever a flow changes in that table. The
5691 * end result is that we revalidate just the facets that need it (and sometimes
5692 * a few more, but not all of the facets or even all of the facets that
5693 * resubmit to the table modified by MAC learning). */
5695 /* Calculates the tag to use for 'flow' and wildcards 'wc' when it is inserted
5696 * into an OpenFlow table with the given 'basis'. */
5698 rule_calculate_tag(const struct flow *flow, const struct flow_wildcards *wc,
5701 if (flow_wildcards_is_catchall(wc)) {
5704 struct flow tag_flow = *flow;
5705 flow_zero_wildcards(&tag_flow, wc);
5706 return tag_create_deterministic(flow_hash(&tag_flow, secret));
5710 /* Following a change to OpenFlow table 'table_id' in 'ofproto', update the
5711 * taggability of that table.
5713 * This function must be called after *each* change to a flow table. If you
5714 * skip calling it on some changes then the pointer comparisons at the end can
5715 * be invalid if you get unlucky. For example, if a flow removal causes a
5716 * cls_table to be destroyed and then a flow insertion causes a cls_table with
5717 * different wildcards to be created with the same address, then this function
5718 * will incorrectly skip revalidation. */
5720 table_update_taggable(struct ofproto_dpif *ofproto, uint8_t table_id)
5722 struct table_dpif *table = &ofproto->tables[table_id];
5723 const struct oftable *oftable = &ofproto->up.tables[table_id];
5724 struct cls_table *catchall, *other;
5725 struct cls_table *t;
5727 catchall = other = NULL;
5729 switch (hmap_count(&oftable->cls.tables)) {
5731 /* We could tag this OpenFlow table but it would make the logic a
5732 * little harder and it's a corner case that doesn't seem worth it
5738 HMAP_FOR_EACH (t, hmap_node, &oftable->cls.tables) {
5739 if (cls_table_is_catchall(t)) {
5741 } else if (!other) {
5744 /* Indicate that we can't tag this by setting both tables to
5745 * NULL. (We know that 'catchall' is already NULL.) */
5752 /* Can't tag this table. */
5756 if (table->catchall_table != catchall || table->other_table != other) {
5757 table->catchall_table = catchall;
5758 table->other_table = other;
5759 ofproto->need_revalidate = true;
5763 /* Given 'rule' that has changed in some way (either it is a rule being
5764 * inserted, a rule being deleted, or a rule whose actions are being
5765 * modified), marks facets for revalidation to ensure that packets will be
5766 * forwarded correctly according to the new state of the flow table.
5768 * This function must be called after *each* change to a flow table. See
5769 * the comment on table_update_taggable() for more information. */
5771 rule_invalidate(const struct rule_dpif *rule)
5773 struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
5775 table_update_taggable(ofproto, rule->up.table_id);
5777 if (!ofproto->need_revalidate) {
5778 struct table_dpif *table = &ofproto->tables[rule->up.table_id];
5780 if (table->other_table && rule->tag) {
5781 tag_set_add(&ofproto->revalidate_set, rule->tag);
5783 ofproto->need_revalidate = true;
5789 set_frag_handling(struct ofproto *ofproto_,
5790 enum ofp_config_flags frag_handling)
5792 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5794 if (frag_handling != OFPC_FRAG_REASM) {
5795 ofproto->need_revalidate = true;
5803 packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
5804 const struct flow *flow,
5805 const union ofp_action *ofp_actions, size_t n_ofp_actions)
5807 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5810 if (flow->in_port >= ofproto->max_ports && flow->in_port < OFPP_MAX) {
5811 return OFPERR_NXBRC_BAD_IN_PORT;
5814 error = validate_actions(ofp_actions, n_ofp_actions, flow,
5815 ofproto->max_ports);
5817 struct odputil_keybuf keybuf;
5818 struct ofpbuf *odp_actions;
5819 struct ofproto_push push;
5822 ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
5823 odp_flow_key_from_flow(&key, flow);
5825 action_xlate_ctx_init(&push.ctx, ofproto, flow, flow->vlan_tci, NULL,
5826 packet_get_tcp_flags(packet, flow), packet);
5828 /* Ensure that resubmits in 'ofp_actions' get accounted to their
5829 * matching rules. */
5831 push.bytes = packet->size;
5832 push.used = time_msec();
5833 push.ctx.resubmit_hook = push_resubmit;
5835 odp_actions = xlate_actions(&push.ctx, ofp_actions, n_ofp_actions);
5836 dpif_execute(ofproto->dpif, key.data, key.size,
5837 odp_actions->data, odp_actions->size, packet);
5838 ofpbuf_delete(odp_actions);
5846 set_netflow(struct ofproto *ofproto_,
5847 const struct netflow_options *netflow_options)
5849 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5851 if (netflow_options) {
5852 if (!ofproto->netflow) {
5853 ofproto->netflow = netflow_create();
5855 return netflow_set_options(ofproto->netflow, netflow_options);
5857 netflow_destroy(ofproto->netflow);
5858 ofproto->netflow = NULL;
5864 get_netflow_ids(const struct ofproto *ofproto_,
5865 uint8_t *engine_type, uint8_t *engine_id)
5867 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
5869 dpif_get_netflow_ids(ofproto->dpif, engine_type, engine_id);
5873 send_active_timeout(struct ofproto_dpif *ofproto, struct facet *facet)
5875 if (!facet_is_controller_flow(facet) &&
5876 netflow_active_timeout_expired(ofproto->netflow, &facet->nf_flow)) {
5877 struct subfacet *subfacet;
5878 struct ofexpired expired;
5880 LIST_FOR_EACH (subfacet, list_node, &facet->subfacets) {
5881 if (subfacet->installed) {
5882 struct dpif_flow_stats stats;
5884 subfacet_install(subfacet, subfacet->actions,
5885 subfacet->actions_len, &stats);
5886 subfacet_update_stats(subfacet, &stats);
5890 expired.flow = facet->flow;
5891 expired.packet_count = facet->packet_count;
5892 expired.byte_count = facet->byte_count;
5893 expired.used = facet->used;
5894 netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
5899 send_netflow_active_timeouts(struct ofproto_dpif *ofproto)
5901 struct facet *facet;
5903 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
5904 send_active_timeout(ofproto, facet);
5908 static struct ofproto_dpif *
5909 ofproto_dpif_lookup(const char *name)
5911 struct ofproto_dpif *ofproto;
5913 HMAP_FOR_EACH_WITH_HASH (ofproto, all_ofproto_dpifs_node,
5914 hash_string(name, 0), &all_ofproto_dpifs) {
5915 if (!strcmp(ofproto->up.name, name)) {
5923 ofproto_unixctl_fdb_flush(struct unixctl_conn *conn, int argc,
5924 const char *argv[], void *aux OVS_UNUSED)
5926 struct ofproto_dpif *ofproto;
5929 ofproto = ofproto_dpif_lookup(argv[1]);
5931 unixctl_command_reply_error(conn, "no such bridge");
5934 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5936 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
5937 mac_learning_flush(ofproto->ml, &ofproto->revalidate_set);
5941 unixctl_command_reply(conn, "table successfully flushed");
5945 ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
5946 const char *argv[], void *aux OVS_UNUSED)
5948 struct ds ds = DS_EMPTY_INITIALIZER;
5949 const struct ofproto_dpif *ofproto;
5950 const struct mac_entry *e;
5952 ofproto = ofproto_dpif_lookup(argv[1]);
5954 unixctl_command_reply_error(conn, "no such bridge");
5958 ds_put_cstr(&ds, " port VLAN MAC Age\n");
5959 LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
5960 struct ofbundle *bundle = e->port.p;
5961 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
5962 ofbundle_get_a_port(bundle)->odp_port,
5963 e->vlan, ETH_ADDR_ARGS(e->mac),
5964 mac_entry_age(ofproto->ml, e));
5966 unixctl_command_reply(conn, ds_cstr(&ds));
5971 struct action_xlate_ctx ctx;
5977 trace_format_rule(struct ds *result, uint8_t table_id, int level,
5978 const struct rule_dpif *rule)
5980 ds_put_char_multiple(result, '\t', level);
5982 ds_put_cstr(result, "No match\n");
5986 ds_put_format(result, "Rule: table=%"PRIu8" cookie=%#"PRIx64" ",
5987 table_id, ntohll(rule->up.flow_cookie));
5988 cls_rule_format(&rule->up.cr, result);
5989 ds_put_char(result, '\n');
5991 ds_put_char_multiple(result, '\t', level);
5992 ds_put_cstr(result, "OpenFlow ");
5993 ofp_print_actions(result, rule->up.actions, rule->up.n_actions);
5994 ds_put_char(result, '\n');
5998 trace_format_flow(struct ds *result, int level, const char *title,
5999 struct trace_ctx *trace)
6001 ds_put_char_multiple(result, '\t', level);
6002 ds_put_format(result, "%s: ", title);
6003 if (flow_equal(&trace->ctx.flow, &trace->flow)) {
6004 ds_put_cstr(result, "unchanged");
6006 flow_format(result, &trace->ctx.flow);
6007 trace->flow = trace->ctx.flow;
6009 ds_put_char(result, '\n');
6013 trace_format_regs(struct ds *result, int level, const char *title,
6014 struct trace_ctx *trace)
6018 ds_put_char_multiple(result, '\t', level);
6019 ds_put_format(result, "%s:", title);
6020 for (i = 0; i < FLOW_N_REGS; i++) {
6021 ds_put_format(result, " reg%zu=0x%"PRIx32, i, trace->flow.regs[i]);
6023 ds_put_char(result, '\n');
6027 trace_format_odp(struct ds *result, int level, const char *title,
6028 struct trace_ctx *trace)
6030 struct ofpbuf *odp_actions = trace->ctx.odp_actions;
6032 ds_put_char_multiple(result, '\t', level);
6033 ds_put_format(result, "%s: ", title);
6034 format_odp_actions(result, odp_actions->data, odp_actions->size);
6035 ds_put_char(result, '\n');
6039 trace_resubmit(struct action_xlate_ctx *ctx, struct rule_dpif *rule)
6041 struct trace_ctx *trace = CONTAINER_OF(ctx, struct trace_ctx, ctx);
6042 struct ds *result = trace->result;
6044 ds_put_char(result, '\n');
6045 trace_format_flow(result, ctx->recurse + 1, "Resubmitted flow", trace);
6046 trace_format_regs(result, ctx->recurse + 1, "Resubmitted regs", trace);
6047 trace_format_odp(result, ctx->recurse + 1, "Resubmitted odp", trace);
6048 trace_format_rule(result, ctx->table_id, ctx->recurse + 1, rule);
6052 ofproto_unixctl_trace(struct unixctl_conn *conn, int argc, const char *argv[],
6053 void *aux OVS_UNUSED)
6055 const char *dpname = argv[1];
6056 struct ofproto_dpif *ofproto;
6057 struct ofpbuf odp_key;
6058 struct ofpbuf *packet;
6059 ovs_be16 initial_tci;
6065 ofpbuf_init(&odp_key, 0);
6068 ofproto = ofproto_dpif_lookup(dpname);
6070 unixctl_command_reply_error(conn, "Unknown ofproto (use ofproto/list "
6074 if (argc == 3 || (argc == 4 && !strcmp(argv[3], "-generate"))) {
6075 /* ofproto/trace dpname flow [-generate] */
6076 const char *flow_s = argv[2];
6077 const char *generate_s = argv[3];
6080 /* Convert string to datapath key. */
6081 ofpbuf_init(&odp_key, 0);
6082 error = odp_flow_key_from_string(flow_s, NULL, &odp_key);
6084 unixctl_command_reply_error(conn, "Bad flow syntax");
6088 /* Convert odp_key to flow. */
6089 error = ofproto_dpif_extract_flow_key(ofproto, odp_key.data,
6090 odp_key.size, &flow,
6091 &initial_tci, NULL);
6092 if (error == ODP_FIT_ERROR) {
6093 unixctl_command_reply_error(conn, "Invalid flow");
6097 /* Generate a packet, if requested. */
6099 packet = ofpbuf_new(0);
6100 flow_compose(packet, &flow);
6102 } else if (argc == 6) {
6103 /* ofproto/trace dpname priority tun_id in_port packet */
6104 const char *priority_s = argv[2];
6105 const char *tun_id_s = argv[3];
6106 const char *in_port_s = argv[4];
6107 const char *packet_s = argv[5];
6108 uint16_t in_port = ofp_port_to_odp_port(atoi(in_port_s));
6109 ovs_be64 tun_id = htonll(strtoull(tun_id_s, NULL, 0));
6110 uint32_t priority = atoi(priority_s);
6113 msg = eth_from_hex(packet_s, &packet);
6115 unixctl_command_reply_error(conn, msg);
6119 ds_put_cstr(&result, "Packet: ");
6120 s = ofp_packet_to_string(packet->data, packet->size);
6121 ds_put_cstr(&result, s);
6124 flow_extract(packet, priority, tun_id, in_port, &flow);
6125 initial_tci = flow.vlan_tci;
6127 unixctl_command_reply_error(conn, "Bad command syntax");
6131 ofproto_trace(ofproto, &flow, packet, initial_tci, &result);
6132 unixctl_command_reply(conn, ds_cstr(&result));
6135 ds_destroy(&result);
6136 ofpbuf_delete(packet);
6137 ofpbuf_uninit(&odp_key);
6141 ofproto_trace(struct ofproto_dpif *ofproto, const struct flow *flow,
6142 const struct ofpbuf *packet, ovs_be16 initial_tci,
6145 struct rule_dpif *rule;
6147 ds_put_cstr(ds, "Flow: ");
6148 flow_format(ds, flow);
6149 ds_put_char(ds, '\n');
6151 rule = rule_dpif_lookup(ofproto, flow, 0);
6152 trace_format_rule(ds, 0, 0, rule);
6154 struct trace_ctx trace;
6155 struct ofpbuf *odp_actions;
6158 tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
6161 action_xlate_ctx_init(&trace.ctx, ofproto, flow, initial_tci,
6162 rule, tcp_flags, packet);
6163 trace.ctx.resubmit_hook = trace_resubmit;
6164 odp_actions = xlate_actions(&trace.ctx,
6165 rule->up.actions, rule->up.n_actions);
6167 ds_put_char(ds, '\n');
6168 trace_format_flow(ds, 0, "Final flow", &trace);
6169 ds_put_cstr(ds, "Datapath actions: ");
6170 format_odp_actions(ds, odp_actions->data, odp_actions->size);
6171 ofpbuf_delete(odp_actions);
6173 if (!trace.ctx.may_set_up_flow) {
6175 ds_put_cstr(ds, "\nThis flow is not cachable.");
6177 ds_put_cstr(ds, "\nThe datapath actions are incomplete--"
6178 "for complete actions, please supply a packet.");
6185 ofproto_dpif_clog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6186 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6189 unixctl_command_reply(conn, NULL);
6193 ofproto_dpif_unclog(struct unixctl_conn *conn OVS_UNUSED, int argc OVS_UNUSED,
6194 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
6197 unixctl_command_reply(conn, NULL);
6200 /* Runs a self-check of flow translations in 'ofproto'. Appends a message to
6201 * 'reply' describing the results. */
6203 ofproto_dpif_self_check__(struct ofproto_dpif *ofproto, struct ds *reply)
6205 struct facet *facet;
6209 HMAP_FOR_EACH (facet, hmap_node, &ofproto->facets) {
6210 if (!facet_check_consistency(facet)) {
6215 ofproto->need_revalidate = true;
6219 ds_put_format(reply, "%s: self-check failed (%d errors)\n",
6220 ofproto->up.name, errors);
6222 ds_put_format(reply, "%s: self-check passed\n", ofproto->up.name);
6227 ofproto_dpif_self_check(struct unixctl_conn *conn,
6228 int argc, const char *argv[], void *aux OVS_UNUSED)
6230 struct ds reply = DS_EMPTY_INITIALIZER;
6231 struct ofproto_dpif *ofproto;
6234 ofproto = ofproto_dpif_lookup(argv[1]);
6236 unixctl_command_reply_error(conn, "Unknown ofproto (use "
6237 "ofproto/list for help)");
6240 ofproto_dpif_self_check__(ofproto, &reply);
6242 HMAP_FOR_EACH (ofproto, all_ofproto_dpifs_node, &all_ofproto_dpifs) {
6243 ofproto_dpif_self_check__(ofproto, &reply);
6247 unixctl_command_reply(conn, ds_cstr(&reply));
6252 ofproto_dpif_unixctl_init(void)
6254 static bool registered;
6260 unixctl_command_register(
6262 "bridge {tun_id in_port packet | odp_flow [-generate]}",
6263 2, 5, ofproto_unixctl_trace, NULL);
6264 unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
6265 ofproto_unixctl_fdb_flush, NULL);
6266 unixctl_command_register("fdb/show", "bridge", 1, 1,
6267 ofproto_unixctl_fdb_show, NULL);
6268 unixctl_command_register("ofproto/clog", "", 0, 0,
6269 ofproto_dpif_clog, NULL);
6270 unixctl_command_register("ofproto/unclog", "", 0, 0,
6271 ofproto_dpif_unclog, NULL);
6272 unixctl_command_register("ofproto/self-check", "[bridge]", 0, 1,
6273 ofproto_dpif_self_check, NULL);
6276 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
6278 * This is deprecated. It is only for compatibility with broken device drivers
6279 * in old versions of Linux that do not properly support VLANs when VLAN
6280 * devices are not used. When broken device drivers are no longer in
6281 * widespread use, we will delete these interfaces. */
6284 set_realdev(struct ofport *ofport_, uint16_t realdev_ofp_port, int vid)
6286 struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofport_->ofproto);
6287 struct ofport_dpif *ofport = ofport_dpif_cast(ofport_);
6289 if (realdev_ofp_port == ofport->realdev_ofp_port
6290 && vid == ofport->vlandev_vid) {
6294 ofproto->need_revalidate = true;
6296 if (ofport->realdev_ofp_port) {
6299 if (realdev_ofp_port && ofport->bundle) {
6300 /* vlandevs are enslaved to their realdevs, so they are not allowed to
6301 * themselves be part of a bundle. */
6302 bundle_set(ofport->up.ofproto, ofport->bundle, NULL);
6305 ofport->realdev_ofp_port = realdev_ofp_port;
6306 ofport->vlandev_vid = vid;
6308 if (realdev_ofp_port) {
6309 vsp_add(ofport, realdev_ofp_port, vid);
6316 hash_realdev_vid(uint16_t realdev_ofp_port, int vid)
6318 return hash_2words(realdev_ofp_port, vid);
6321 /* Returns the ODP port number of the Linux VLAN device that corresponds to
6322 * 'vlan_tci' on the network device with port number 'realdev_odp_port' in
6323 * 'ofproto'. For example, given 'realdev_odp_port' of eth0 and 'vlan_tci' 9,
6324 * it would return the port number of eth0.9.
6326 * Unless VLAN splinters are enabled for port 'realdev_odp_port', this
6327 * function just returns its 'realdev_odp_port' argument. */
6329 vsp_realdev_to_vlandev(const struct ofproto_dpif *ofproto,
6330 uint32_t realdev_odp_port, ovs_be16 vlan_tci)
6332 if (!hmap_is_empty(&ofproto->realdev_vid_map)) {
6333 uint16_t realdev_ofp_port = odp_port_to_ofp_port(realdev_odp_port);
6334 int vid = vlan_tci_to_vid(vlan_tci);
6335 const struct vlan_splinter *vsp;
6337 HMAP_FOR_EACH_WITH_HASH (vsp, realdev_vid_node,
6338 hash_realdev_vid(realdev_ofp_port, vid),
6339 &ofproto->realdev_vid_map) {
6340 if (vsp->realdev_ofp_port == realdev_ofp_port
6341 && vsp->vid == vid) {
6342 return ofp_port_to_odp_port(vsp->vlandev_ofp_port);
6346 return realdev_odp_port;
6349 static struct vlan_splinter *
6350 vlandev_find(const struct ofproto_dpif *ofproto, uint16_t vlandev_ofp_port)
6352 struct vlan_splinter *vsp;
6354 HMAP_FOR_EACH_WITH_HASH (vsp, vlandev_node, hash_int(vlandev_ofp_port, 0),
6355 &ofproto->vlandev_map) {
6356 if (vsp->vlandev_ofp_port == vlandev_ofp_port) {
6364 /* Returns the OpenFlow port number of the "real" device underlying the Linux
6365 * VLAN device with OpenFlow port number 'vlandev_ofp_port' and stores the
6366 * VLAN VID of the Linux VLAN device in '*vid'. For example, given
6367 * 'vlandev_ofp_port' of eth0.9, it would return the OpenFlow port number of
6368 * eth0 and store 9 in '*vid'.
6370 * Returns 0 and does not modify '*vid' if 'vlandev_ofp_port' is not a Linux
6371 * VLAN device. Unless VLAN splinters are enabled, this is what this function
6374 vsp_vlandev_to_realdev(const struct ofproto_dpif *ofproto,
6375 uint16_t vlandev_ofp_port, int *vid)
6377 if (!hmap_is_empty(&ofproto->vlandev_map)) {
6378 const struct vlan_splinter *vsp;
6380 vsp = vlandev_find(ofproto, vlandev_ofp_port);
6385 return vsp->realdev_ofp_port;
6392 vsp_remove(struct ofport_dpif *port)
6394 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6395 struct vlan_splinter *vsp;
6397 vsp = vlandev_find(ofproto, port->up.ofp_port);
6399 hmap_remove(&ofproto->vlandev_map, &vsp->vlandev_node);
6400 hmap_remove(&ofproto->realdev_vid_map, &vsp->realdev_vid_node);
6403 port->realdev_ofp_port = 0;
6405 VLOG_ERR("missing vlan device record");
6410 vsp_add(struct ofport_dpif *port, uint16_t realdev_ofp_port, int vid)
6412 struct ofproto_dpif *ofproto = ofproto_dpif_cast(port->up.ofproto);
6414 if (!vsp_vlandev_to_realdev(ofproto, port->up.ofp_port, NULL)
6415 && (vsp_realdev_to_vlandev(ofproto, realdev_ofp_port, htons(vid))
6416 == realdev_ofp_port)) {
6417 struct vlan_splinter *vsp;
6419 vsp = xmalloc(sizeof *vsp);
6420 hmap_insert(&ofproto->vlandev_map, &vsp->vlandev_node,
6421 hash_int(port->up.ofp_port, 0));
6422 hmap_insert(&ofproto->realdev_vid_map, &vsp->realdev_vid_node,
6423 hash_realdev_vid(realdev_ofp_port, vid));
6424 vsp->realdev_ofp_port = realdev_ofp_port;
6425 vsp->vlandev_ofp_port = port->up.ofp_port;
6428 port->realdev_ofp_port = realdev_ofp_port;
6430 VLOG_ERR("duplicate vlan device record");
6434 const struct ofproto_class ofproto_dpif_class = {
6463 port_is_lacp_current,
6464 NULL, /* rule_choose_table */
6471 rule_modify_actions,
6479 get_cfm_remote_mpids,
6483 get_stp_port_status,
6490 is_mirror_output_bundle,
6491 forward_bpdu_changed,