2 * Copyright (c) 2009 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.
22 #include <netinet/in.h>
25 #include "classifier.h"
27 #include "discovery.h"
29 #include "dynamic-string.h"
31 #include "fail-open.h"
33 #include "mac-learning.h"
37 #include "ofp-print.h"
39 #include "openflow/nicira-ext.h"
40 #include "openflow/openflow.h"
41 #include "openflow/openflow-mgmt.h"
42 #include "openvswitch/datapath-protocol.h"
46 #include "poll-loop.h"
47 #include "port-array.h"
57 #include "vconn-ssl.h"
60 #define THIS_MODULE VLM_ofproto
70 TABLEID_CLASSIFIER = 1
74 struct netdev *netdev;
75 struct ofp_phy_port opp; /* In host byte order. */
78 static void ofport_free(struct ofport *);
79 static void hton_ofp_phy_port(struct ofp_phy_port *);
81 static int xlate_actions(const union ofp_action *in, size_t n_in,
82 const flow_t *flow, struct ofproto *ofproto,
83 const struct ofpbuf *packet,
84 struct odp_actions *out, tag_type *tags,
85 bool *may_set_up_flow);
90 uint16_t idle_timeout; /* In seconds from time of last use. */
91 uint16_t hard_timeout; /* In seconds from time of creation. */
92 long long int used; /* Last-used time (0 if never used). */
93 long long int created; /* Creation time. */
94 uint64_t packet_count; /* Number of packets received. */
95 uint64_t byte_count; /* Number of bytes received. */
96 uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */
97 uint8_t tcp_flags; /* Bitwise-OR of all TCP flags seen. */
98 uint8_t ip_tos; /* Last-seen IP type-of-service. */
99 tag_type tags; /* Tags (set only by hooks). */
101 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
102 * exact-match rule (having cr.wc.wildcards of 0) generated from the
103 * wildcard rule 'super'. In this case, 'list' is an element of the
106 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
107 * a list of subrules. A super-rule with no wildcards (where
108 * cr.wc.wildcards is 0) will never have any subrules. */
114 * A subrule has no actions (it uses the super-rule's actions). */
116 union ofp_action *actions;
120 * A super-rule with wildcard fields never has ODP actions (since the
121 * datapath only supports exact-match flows). */
122 bool installed; /* Installed in datapath? */
123 bool may_install; /* True ordinarily; false if actions must
124 * be reassessed for every packet. */
126 union odp_action *odp_actions;
130 rule_is_hidden(const struct rule *rule)
132 /* Subrules are merely an implementation detail, so hide them from the
134 if (rule->super != NULL) {
138 /* Rules with priority higher than UINT16_MAX are set up by secchan itself
139 * (e.g. by in-band control) and are intentionally hidden from the
141 if (rule->cr.priority > UINT16_MAX) {
148 static struct rule *rule_create(struct rule *super, const union ofp_action *,
149 size_t n_actions, uint16_t idle_timeout,
150 uint16_t hard_timeout);
151 static void rule_free(struct rule *);
152 static void rule_destroy(struct ofproto *, struct rule *);
153 static struct rule *rule_from_cls_rule(const struct cls_rule *);
154 static void rule_insert(struct ofproto *, struct rule *,
155 struct ofpbuf *packet, uint16_t in_port);
156 static void rule_remove(struct ofproto *, struct rule *);
157 static bool rule_make_actions(struct ofproto *, struct rule *,
158 const struct ofpbuf *packet);
159 static void rule_install(struct ofproto *, struct rule *,
160 struct rule *displaced_rule);
161 static void rule_uninstall(struct ofproto *, struct rule *);
162 static void rule_post_uninstall(struct ofproto *, struct rule *);
167 struct pktbuf *pktbuf;
171 struct rconn_packet_counter *packet_in_counter;
173 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
174 * the maximum number before we stop reading OpenFlow requests. */
175 #define OFCONN_REPLY_MAX 100
176 struct rconn_packet_counter *reply_counter;
179 static struct ofconn *ofconn_create(struct ofproto *, struct rconn *);
180 static void ofconn_destroy(struct ofconn *, struct ofproto *);
181 static void ofconn_run(struct ofconn *, struct ofproto *);
182 static void ofconn_wait(struct ofconn *);
183 static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
184 struct rconn_packet_counter *counter);
188 uint64_t datapath_id; /* Datapath ID. */
189 uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
190 uint64_t mgmt_id; /* Management channel identifier. */
191 char *manufacturer; /* Manufacturer. */
192 char *hardware; /* Hardware. */
193 char *software; /* Software version. */
194 char *serial; /* Serial number. */
198 struct dpifmon *dpifmon;
199 struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is
201 struct shash port_by_name;
205 struct switch_status *switch_status;
206 struct status_category *ss_cat;
207 struct in_band *in_band;
208 struct discovery *discovery;
209 struct fail_open *fail_open;
210 struct pinsched *miss_sched, *action_sched;
211 struct executer *executer;
212 struct netflow *netflow;
215 struct classifier cls;
216 bool need_revalidate;
217 long long int next_expiration;
218 struct tag_set revalidate_set;
220 /* OpenFlow connections. */
221 struct list all_conns;
222 struct ofconn *controller;
223 struct pvconn **listeners;
225 struct pvconn **snoops;
228 /* Hooks for ovs-vswitchd. */
229 const struct ofhooks *ofhooks;
232 /* Used by default ofhooks. */
233 struct mac_learning *ml;
236 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
238 static const struct ofhooks default_ofhooks;
240 static uint64_t pick_datapath_id(struct dpif *, uint64_t fallback_dpid);
241 static uint64_t pick_fallback_dpid(void);
242 static void send_packet_in_miss(struct ofpbuf *, void *ofproto);
243 static void send_packet_in_action(struct ofpbuf *, void *ofproto);
244 static void update_used(struct ofproto *);
245 static void update_stats(struct rule *, const struct odp_flow_stats *);
246 static void expire_rule(struct cls_rule *, void *ofproto);
247 static bool revalidate_rule(struct ofproto *p, struct rule *rule);
248 static void revalidate_cb(struct cls_rule *rule_, void *p_);
250 static void handle_odp_msg(struct ofproto *, struct ofpbuf *);
252 static void handle_openflow(struct ofconn *, struct ofproto *,
255 static void refresh_port_group(struct ofproto *, unsigned int group);
256 static void update_port(struct ofproto *, const char *devname);
257 static int init_ports(struct ofproto *);
258 static void reinit_ports(struct ofproto *);
261 ofproto_create(const char *datapath, const struct ofhooks *ofhooks, void *aux,
262 struct ofproto **ofprotop)
264 struct dpifmon *dpifmon;
265 struct odp_stats stats;
272 /* Connect to datapath and start listening for messages. */
273 error = dpif_open(datapath, &dpif);
275 VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
278 error = dpif_get_dp_stats(&dpif, &stats);
280 VLOG_ERR("failed to obtain stats for datapath %s: %s",
281 datapath, strerror(error));
285 error = dpif_set_listen_mask(&dpif, ODPL_MISS | ODPL_ACTION);
287 VLOG_ERR("failed to listen on datapath %s: %s",
288 datapath, strerror(error));
292 dpif_flow_flush(&dpif);
295 /* Start monitoring datapath ports for status changes. */
296 error = dpifmon_create(datapath, &dpifmon);
298 VLOG_ERR("failed to starting monitoring datapath %s: %s",
299 datapath, strerror(error));
304 /* Initialize settings. */
305 p = xcalloc(1, sizeof *p);
306 p->fallback_dpid = pick_fallback_dpid();
307 p->datapath_id = pick_datapath_id(&dpif, p->fallback_dpid);
308 VLOG_INFO("using datapath ID %012"PRIx64, p->datapath_id);
309 p->manufacturer = xstrdup("Nicira Networks, Inc.");
310 p->hardware = xstrdup("Reference Implementation");
311 p->software = xstrdup(VERSION BUILDNR);
312 p->serial = xstrdup("None");
314 /* Initialize datapath. */
316 p->dpifmon = dpifmon;
317 port_array_init(&p->ports);
318 shash_init(&p->port_by_name);
319 p->max_ports = stats.max_ports;
321 /* Initialize submodules. */
322 p->switch_status = switch_status_create(p);
326 p->miss_sched = p->action_sched = NULL;
330 /* Initialize flow table. */
331 classifier_init(&p->cls);
332 p->need_revalidate = false;
333 p->next_expiration = time_msec() + 1000;
334 tag_set_init(&p->revalidate_set);
336 /* Initialize OpenFlow connections. */
337 list_init(&p->all_conns);
338 p->controller = ofconn_create(p, rconn_create(5, 8));
339 p->controller->pktbuf = pktbuf_create();
340 p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
346 /* Initialize hooks. */
348 p->ofhooks = ofhooks;
352 p->ofhooks = &default_ofhooks;
354 p->ml = mac_learning_create();
357 /* Register switch status category. */
358 p->ss_cat = switch_status_register(p->switch_status, "remote",
359 rconn_status_cb, p->controller->rconn);
362 error = init_ports(p);
373 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
375 uint64_t old_dpid = p->datapath_id;
376 p->datapath_id = (datapath_id
378 : pick_datapath_id(&p->dpif, p->fallback_dpid));
379 if (p->datapath_id != old_dpid) {
380 VLOG_INFO("datapath ID changed to %012"PRIx64, p->datapath_id);
381 rconn_reconnect(p->controller->rconn);
386 ofproto_set_mgmt_id(struct ofproto *p, uint64_t mgmt_id)
388 p->mgmt_id = mgmt_id;
392 ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
394 probe_interval = probe_interval ? MAX(probe_interval, 5) : 0;
395 rconn_set_probe_interval(p->controller->rconn, probe_interval);
397 int trigger_duration = probe_interval ? probe_interval * 3 : 15;
398 fail_open_set_trigger_duration(p->fail_open, trigger_duration);
403 ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
405 rconn_set_max_backoff(p->controller->rconn, max_backoff);
409 ofproto_set_desc(struct ofproto *p,
410 const char *manufacturer, const char *hardware,
411 const char *software, const char *serial)
414 free(p->manufacturer);
415 p->manufacturer = xstrdup(manufacturer);
419 p->hardware = xstrdup(hardware);
423 p->software = xstrdup(software);
427 p->serial = xstrdup(serial);
432 ofproto_set_in_band(struct ofproto *p, bool in_band)
434 if (in_band != (p->in_band != NULL)) {
436 in_band_create(p, &p->dpif, p->switch_status,
437 p->controller->rconn, &p->in_band);
440 ofproto_set_discovery(p, false, NULL, true);
441 in_band_destroy(p->in_band);
444 rconn_reconnect(p->controller->rconn);
450 ofproto_set_discovery(struct ofproto *p, bool discovery,
451 const char *re, bool update_resolv_conf)
453 if (discovery != (p->discovery != NULL)) {
455 int error = ofproto_set_in_band(p, true);
459 error = discovery_create(re, update_resolv_conf,
460 &p->dpif, p->switch_status,
466 discovery_destroy(p->discovery);
469 rconn_disconnect(p->controller->rconn);
470 } else if (discovery) {
471 discovery_set_update_resolv_conf(p->discovery, update_resolv_conf);
472 return discovery_set_accept_controller_re(p->discovery, re);
478 ofproto_set_controller(struct ofproto *ofproto, const char *controller)
480 if (ofproto->discovery) {
482 } else if (controller) {
483 if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) {
484 return rconn_connect(ofproto->controller->rconn, controller);
489 rconn_disconnect(ofproto->controller->rconn);
495 set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp,
496 const struct svec *svec)
498 struct pvconn **pvconns = *pvconnsp;
499 size_t n_pvconns = *n_pvconnsp;
503 for (i = 0; i < n_pvconns; i++) {
504 pvconn_close(pvconns[i]);
508 pvconns = xmalloc(svec->n * sizeof *pvconns);
510 for (i = 0; i < svec->n; i++) {
511 const char *name = svec->names[i];
512 struct pvconn *pvconn;
515 error = pvconn_open(name, &pvconn);
517 pvconns[n_pvconns++] = pvconn;
519 VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
527 *n_pvconnsp = n_pvconns;
533 ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners)
535 return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners);
539 ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops)
541 return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops);
545 ofproto_set_netflow(struct ofproto *ofproto, const struct svec *collectors,
546 uint8_t engine_type, uint8_t engine_id, bool add_id_to_iface)
548 if (collectors && collectors->n) {
549 if (!ofproto->netflow) {
550 ofproto->netflow = netflow_create();
552 netflow_set_engine(ofproto->netflow, engine_type, engine_id,
554 return netflow_set_collectors(ofproto->netflow, collectors);
556 netflow_destroy(ofproto->netflow);
557 ofproto->netflow = NULL;
563 ofproto_set_failure(struct ofproto *ofproto, bool fail_open)
566 struct rconn *rconn = ofproto->controller->rconn;
567 int trigger_duration = rconn_get_probe_interval(rconn) * 3;
568 if (!ofproto->fail_open) {
569 ofproto->fail_open = fail_open_create(ofproto, trigger_duration,
570 ofproto->switch_status,
573 fail_open_set_trigger_duration(ofproto->fail_open,
577 fail_open_destroy(ofproto->fail_open);
578 ofproto->fail_open = NULL;
583 ofproto_set_rate_limit(struct ofproto *ofproto,
584 int rate_limit, int burst_limit)
586 if (rate_limit > 0) {
587 if (!ofproto->miss_sched) {
588 ofproto->miss_sched = pinsched_create(rate_limit, burst_limit,
589 ofproto->switch_status);
590 ofproto->action_sched = pinsched_create(rate_limit, burst_limit,
593 pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit);
594 pinsched_set_limits(ofproto->action_sched,
595 rate_limit, burst_limit);
598 pinsched_destroy(ofproto->miss_sched);
599 ofproto->miss_sched = NULL;
600 pinsched_destroy(ofproto->action_sched);
601 ofproto->action_sched = NULL;
606 ofproto_set_stp(struct ofproto *ofproto UNUSED, bool enable_stp)
610 VLOG_WARN("STP is not yet implemented");
618 ofproto_set_remote_execution(struct ofproto *ofproto, const char *command_acl,
619 const char *command_dir)
622 if (!ofproto->executer) {
623 return executer_create(command_acl, command_dir,
626 executer_set_acl(ofproto->executer, command_acl, command_dir);
629 executer_destroy(ofproto->executer);
630 ofproto->executer = NULL;
636 ofproto_get_datapath_id(const struct ofproto *ofproto)
638 return ofproto->datapath_id;
642 ofproto_get_mgmt_id(const struct ofproto *ofproto)
644 return ofproto->mgmt_id;
648 ofproto_get_probe_interval(const struct ofproto *ofproto)
650 return rconn_get_probe_interval(ofproto->controller->rconn);
654 ofproto_get_max_backoff(const struct ofproto *ofproto)
656 return rconn_get_max_backoff(ofproto->controller->rconn);
660 ofproto_get_in_band(const struct ofproto *ofproto)
662 return ofproto->in_band != NULL;
666 ofproto_get_discovery(const struct ofproto *ofproto)
668 return ofproto->discovery != NULL;
672 ofproto_get_controller(const struct ofproto *ofproto)
674 return rconn_get_name(ofproto->controller->rconn);
678 ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
682 for (i = 0; i < ofproto->n_listeners; i++) {
683 svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
688 ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops)
692 for (i = 0; i < ofproto->n_snoops; i++) {
693 svec_add(snoops, pvconn_get_name(ofproto->snoops[i]));
698 ofproto_destroy(struct ofproto *p)
700 struct ofconn *ofconn, *next_ofconn;
701 struct ofport *ofport;
702 unsigned int port_no;
709 ofproto_flush_flows(p);
710 classifier_destroy(&p->cls);
712 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
714 ofconn_destroy(ofconn, p);
717 dpif_close(&p->dpif);
718 dpifmon_destroy(p->dpifmon);
719 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
722 shash_destroy(&p->port_by_name);
724 switch_status_destroy(p->switch_status);
725 in_band_destroy(p->in_band);
726 discovery_destroy(p->discovery);
727 fail_open_destroy(p->fail_open);
728 pinsched_destroy(p->miss_sched);
729 pinsched_destroy(p->action_sched);
730 executer_destroy(p->executer);
731 netflow_destroy(p->netflow);
733 switch_status_unregister(p->ss_cat);
735 for (i = 0; i < p->n_listeners; i++) {
736 pvconn_close(p->listeners[i]);
740 for (i = 0; i < p->n_snoops; i++) {
741 pvconn_close(p->snoops[i]);
745 mac_learning_destroy(p->ml);
751 ofproto_run(struct ofproto *p)
753 int error = ofproto_run1(p);
755 error = ofproto_run2(p, false);
761 ofproto_run1(struct ofproto *p)
763 struct ofconn *ofconn, *next_ofconn;
768 for (i = 0; i < 50; i++) {
772 error = dpif_recv(&p->dpif, &buf);
774 if (error == ENODEV) {
775 /* Someone destroyed the datapath behind our back. The caller
776 * better destroy us and give up, because we're just going to
777 * spin from here on out. */
778 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
779 VLOG_ERR_RL(&rl, "dp%u: datapath was destroyed externally",
786 handle_odp_msg(p, buf);
789 while ((error = dpifmon_poll(p->dpifmon, &devname)) != EAGAIN) {
790 if (error == ENOBUFS) {
793 update_port(p, devname);
799 in_band_run(p->in_band);
802 char *controller_name;
803 if (rconn_is_connectivity_questionable(p->controller->rconn)) {
804 discovery_question_connectivity(p->discovery);
806 if (discovery_run(p->discovery, &controller_name)) {
807 if (controller_name) {
808 rconn_connect(p->controller->rconn, controller_name);
810 rconn_disconnect(p->controller->rconn);
814 pinsched_run(p->miss_sched, send_packet_in_miss, p);
815 pinsched_run(p->action_sched, send_packet_in_action, p);
817 executer_run(p->executer);
820 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
822 ofconn_run(ofconn, p);
825 /* Fail-open maintenance. Do this after processing the ofconns since
826 * fail-open checks the status of the controller rconn. */
828 fail_open_run(p->fail_open);
831 for (i = 0; i < p->n_listeners; i++) {
835 retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
837 ofconn_create(p, rconn_new_from_vconn("passive", vconn));
838 } else if (retval != EAGAIN) {
839 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
843 for (i = 0; i < p->n_snoops; i++) {
847 retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
849 rconn_add_monitor(p->controller->rconn, vconn);
850 } else if (retval != EAGAIN) {
851 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
855 if (time_msec() >= p->next_expiration) {
856 COVERAGE_INC(ofproto_expiration);
857 p->next_expiration = time_msec() + 1000;
860 classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p);
862 /* Let the hook know that we're at a stable point: all outstanding data
863 * in existing flows has been accounted to the account_cb. Thus, the
864 * hook can now reasonably do operations that depend on having accurate
865 * flow volume accounting (currently, that's just bond rebalancing). */
866 if (p->ofhooks->account_checkpoint_cb) {
867 p->ofhooks->account_checkpoint_cb(p->aux);
872 netflow_run(p->netflow);
878 struct revalidate_cbdata {
879 struct ofproto *ofproto;
880 bool revalidate_all; /* Revalidate all exact-match rules? */
881 bool revalidate_subrules; /* Revalidate all exact-match subrules? */
882 struct tag_set revalidate_set; /* Set of tags to revalidate. */
886 ofproto_run2(struct ofproto *p, bool revalidate_all)
888 if (p->need_revalidate || revalidate_all
889 || !tag_set_is_empty(&p->revalidate_set)) {
890 struct revalidate_cbdata cbdata;
892 cbdata.revalidate_all = revalidate_all;
893 cbdata.revalidate_subrules = p->need_revalidate;
894 cbdata.revalidate_set = p->revalidate_set;
895 tag_set_init(&p->revalidate_set);
896 COVERAGE_INC(ofproto_revalidate);
897 classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
898 p->need_revalidate = false;
905 ofproto_wait(struct ofproto *p)
907 struct ofconn *ofconn;
910 dpif_recv_wait(&p->dpif);
911 dpifmon_wait(p->dpifmon);
912 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
916 in_band_wait(p->in_band);
919 discovery_wait(p->discovery);
922 fail_open_wait(p->fail_open);
924 pinsched_wait(p->miss_sched);
925 pinsched_wait(p->action_sched);
927 executer_wait(p->executer);
929 if (!tag_set_is_empty(&p->revalidate_set)) {
930 poll_immediate_wake();
932 if (p->need_revalidate) {
933 /* Shouldn't happen, but if it does just go around again. */
934 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
935 poll_immediate_wake();
936 } else if (p->next_expiration != LLONG_MAX) {
937 poll_timer_wait(p->next_expiration - time_msec());
939 for (i = 0; i < p->n_listeners; i++) {
940 pvconn_wait(p->listeners[i]);
942 for (i = 0; i < p->n_snoops; i++) {
943 pvconn_wait(p->snoops[i]);
948 ofproto_revalidate(struct ofproto *ofproto, tag_type tag)
950 tag_set_add(&ofproto->revalidate_set, tag);
954 ofproto_get_revalidate_set(struct ofproto *ofproto)
956 return &ofproto->revalidate_set;
960 ofproto_is_alive(const struct ofproto *p)
962 return p->discovery || rconn_is_alive(p->controller->rconn);
966 ofproto_send_packet(struct ofproto *p, const flow_t *flow,
967 const union ofp_action *actions, size_t n_actions,
968 const struct ofpbuf *packet)
970 struct odp_actions odp_actions;
973 error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions,
979 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
981 dpif_execute(&p->dpif, flow->in_port, odp_actions.actions,
982 odp_actions.n_actions, packet);
987 ofproto_add_flow(struct ofproto *p,
988 const flow_t *flow, uint32_t wildcards, unsigned int priority,
989 const union ofp_action *actions, size_t n_actions,
993 rule = rule_create(NULL, actions, n_actions,
994 idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, 0);
995 cls_rule_from_flow(&rule->cr, flow, wildcards, priority);
996 rule_insert(p, rule, NULL, 0);
1000 ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow,
1001 uint32_t wildcards, unsigned int priority)
1005 rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
1009 rule_remove(ofproto, rule);
1014 destroy_rule(struct cls_rule *rule_, void *ofproto_)
1016 struct rule *rule = rule_from_cls_rule(rule_);
1017 struct ofproto *ofproto = ofproto_;
1019 /* Mark the flow as not installed, even though it might really be
1020 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1021 * There is no point in uninstalling it individually since we are about to
1022 * blow away all the flows with dpif_flow_flush(). */
1023 rule->installed = false;
1025 rule_remove(ofproto, rule);
1029 ofproto_flush_flows(struct ofproto *ofproto)
1031 COVERAGE_INC(ofproto_flush);
1032 classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto);
1033 dpif_flow_flush(&ofproto->dpif);
1034 if (ofproto->in_band) {
1035 in_band_flushed(ofproto->in_band);
1037 if (ofproto->fail_open) {
1038 fail_open_flushed(ofproto->fail_open);
1043 reinit_ports(struct ofproto *p)
1045 struct svec devnames;
1046 struct ofport *ofport;
1047 unsigned int port_no;
1048 struct odp_port *odp_ports;
1052 svec_init(&devnames);
1053 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
1054 svec_add (&devnames, (char *) ofport->opp.name);
1056 dpif_port_list(&p->dpif, &odp_ports, &n_odp_ports);
1057 for (i = 0; i < n_odp_ports; i++) {
1058 svec_add (&devnames, odp_ports[i].devname);
1062 svec_sort_unique(&devnames);
1063 for (i = 0; i < devnames.n; i++) {
1064 update_port(p, devnames.names[i]);
1066 svec_destroy(&devnames);
1070 refresh_port_group(struct ofproto *p, unsigned int group)
1074 struct ofport *port;
1075 unsigned int port_no;
1077 assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD);
1079 ports = xmalloc(port_array_count(&p->ports) * sizeof *ports);
1081 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1082 if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) {
1083 ports[n_ports++] = port_no;
1086 dpif_port_group_set(&p->dpif, group, ports, n_ports);
1091 refresh_port_groups(struct ofproto *p)
1093 refresh_port_group(p, DP_GROUP_FLOOD);
1094 refresh_port_group(p, DP_GROUP_ALL);
1097 static struct ofport *
1098 make_ofport(const struct odp_port *odp_port)
1100 enum netdev_flags flags;
1101 struct ofport *ofport;
1102 struct netdev *netdev;
1106 error = netdev_open(odp_port->devname, NETDEV_ETH_TYPE_NONE, &netdev);
1108 VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
1109 "cannot be opened (%s)",
1110 odp_port->devname, odp_port->port,
1111 odp_port->devname, strerror(error));
1115 ofport = xmalloc(sizeof *ofport);
1116 ofport->netdev = netdev;
1117 ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port);
1118 memcpy(ofport->opp.hw_addr, netdev_get_etheraddr(netdev), ETH_ALEN);
1119 memcpy(ofport->opp.name, odp_port->devname,
1120 MIN(sizeof ofport->opp.name, sizeof odp_port->devname));
1121 ofport->opp.name[sizeof ofport->opp.name - 1] = '\0';
1123 netdev_get_flags(netdev, &flags);
1124 ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN;
1126 netdev_get_carrier(netdev, &carrier);
1127 ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN;
1129 netdev_get_features(netdev,
1130 &ofport->opp.curr, &ofport->opp.advertised,
1131 &ofport->opp.supported, &ofport->opp.peer);
1136 ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port)
1138 if (port_array_get(&p->ports, odp_port->port)) {
1139 VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
1142 } else if (shash_find(&p->port_by_name, odp_port->devname)) {
1143 VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
1152 ofport_equal(const struct ofport *a_, const struct ofport *b_)
1154 const struct ofp_phy_port *a = &a_->opp;
1155 const struct ofp_phy_port *b = &b_->opp;
1157 BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
1158 return (a->port_no == b->port_no
1159 && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
1160 && !strcmp((char *) a->name, (char *) b->name)
1161 && a->state == b->state
1162 && a->config == b->config
1163 && a->curr == b->curr
1164 && a->advertised == b->advertised
1165 && a->supported == b->supported
1166 && a->peer == b->peer);
1170 send_port_status(struct ofproto *p, const struct ofport *ofport,
1173 /* XXX Should limit the number of queued port status change messages. */
1174 struct ofconn *ofconn;
1175 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
1176 struct ofp_port_status *ops;
1179 ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
1180 ops->reason = reason;
1181 ops->desc = ofport->opp;
1182 hton_ofp_phy_port(&ops->desc);
1183 queue_tx(b, ofconn, NULL);
1185 if (p->ofhooks->port_changed_cb) {
1186 p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux);
1191 ofport_install(struct ofproto *p, struct ofport *ofport)
1193 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no),
1195 shash_add(&p->port_by_name, (char *) ofport->opp.name, ofport);
1199 ofport_remove(struct ofproto *p, struct ofport *ofport)
1201 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no), NULL);
1202 shash_delete(&p->port_by_name,
1203 shash_find(&p->port_by_name, (char *) ofport->opp.name));
1207 ofport_free(struct ofport *ofport)
1210 netdev_close(ofport->netdev);
1216 update_port(struct ofproto *p, const char *devname)
1218 struct odp_port odp_port;
1219 struct ofport *old_ofport;
1220 struct ofport *new_ofport;
1223 COVERAGE_INC(ofproto_update_port);
1225 /* Query the datapath for port information. */
1226 error = dpif_port_query_by_name(&p->dpif, devname, &odp_port);
1228 /* Find the old ofport. */
1229 old_ofport = shash_find_data(&p->port_by_name, devname);
1232 /* There's no port named 'devname' but there might be a port with
1233 * the same port number. This could happen if a port is deleted
1234 * and then a new one added in its place very quickly, or if a port
1235 * is renamed. In the former case we want to send an OFPPR_DELETE
1236 * and an OFPPR_ADD, and in the latter case we want to send a
1237 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1238 * the old port's ifindex against the new port, or perhaps less
1239 * reliably but more portably by comparing the old port's MAC
1240 * against the new port's MAC. However, this code isn't that smart
1241 * and always sends an OFPPR_MODIFY (XXX). */
1242 old_ofport = port_array_get(&p->ports, odp_port.port);
1244 } else if (error != ENOENT && error != ENODEV) {
1245 VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error "
1246 "%s", strerror(error));
1250 /* Create a new ofport. */
1251 new_ofport = !error ? make_ofport(&odp_port) : NULL;
1253 /* Eliminate a few pathological cases. */
1254 if (!old_ofport && !new_ofport) {
1256 } else if (old_ofport && new_ofport) {
1257 /* Most of the 'config' bits are OpenFlow soft state, but
1258 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1259 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1260 * leaves the other bits 0.) */
1261 new_ofport->opp.config |= old_ofport->opp.config & ~OFPPC_PORT_DOWN;
1263 if (ofport_equal(old_ofport, new_ofport)) {
1264 /* False alarm--no change. */
1265 ofport_free(new_ofport);
1270 /* Now deal with the normal cases. */
1272 ofport_remove(p, old_ofport);
1275 ofport_install(p, new_ofport);
1277 send_port_status(p, new_ofport ? new_ofport : old_ofport,
1278 (!old_ofport ? OFPPR_ADD
1279 : !new_ofport ? OFPPR_DELETE
1281 ofport_free(old_ofport);
1283 /* Update port groups. */
1284 refresh_port_groups(p);
1288 init_ports(struct ofproto *p)
1290 struct odp_port *ports;
1295 error = dpif_port_list(&p->dpif, &ports, &n_ports);
1300 for (i = 0; i < n_ports; i++) {
1301 const struct odp_port *odp_port = &ports[i];
1302 if (!ofport_conflicts(p, odp_port)) {
1303 struct ofport *ofport = make_ofport(odp_port);
1305 ofport_install(p, ofport);
1310 refresh_port_groups(p);
1314 static struct ofconn *
1315 ofconn_create(struct ofproto *p, struct rconn *rconn)
1317 struct ofconn *ofconn = xmalloc(sizeof *ofconn);
1318 list_push_back(&p->all_conns, &ofconn->node);
1319 ofconn->rconn = rconn;
1320 ofconn->pktbuf = NULL;
1321 ofconn->send_flow_exp = false;
1322 ofconn->miss_send_len = 0;
1323 ofconn->packet_in_counter = rconn_packet_counter_create ();
1324 ofconn->reply_counter = rconn_packet_counter_create ();
1329 ofconn_destroy(struct ofconn *ofconn, struct ofproto *p)
1332 executer_rconn_closing(p->executer, ofconn->rconn);
1335 list_remove(&ofconn->node);
1336 rconn_destroy(ofconn->rconn);
1337 rconn_packet_counter_destroy(ofconn->packet_in_counter);
1338 rconn_packet_counter_destroy(ofconn->reply_counter);
1339 pktbuf_destroy(ofconn->pktbuf);
1344 ofconn_run(struct ofconn *ofconn, struct ofproto *p)
1348 rconn_run(ofconn->rconn);
1350 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1351 /* Limit the number of iterations to prevent other tasks from
1353 for (iteration = 0; iteration < 50; iteration++) {
1354 struct ofpbuf *of_msg = rconn_recv(ofconn->rconn);
1359 fail_open_maybe_recover(p->fail_open);
1361 handle_openflow(ofconn, p, of_msg);
1362 ofpbuf_delete(of_msg);
1366 if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
1367 ofconn_destroy(ofconn, p);
1372 ofconn_wait(struct ofconn *ofconn)
1374 rconn_run_wait(ofconn->rconn);
1375 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1376 rconn_recv_wait(ofconn->rconn);
1378 COVERAGE_INC(ofproto_ofconn_stuck);
1382 /* Caller is responsible for initializing the 'cr' member of the returned
1384 static struct rule *
1385 rule_create(struct rule *super,
1386 const union ofp_action *actions, size_t n_actions,
1387 uint16_t idle_timeout, uint16_t hard_timeout)
1389 struct rule *rule = xcalloc(1, sizeof *rule);
1390 rule->idle_timeout = idle_timeout;
1391 rule->hard_timeout = hard_timeout;
1392 rule->used = rule->created = time_msec();
1393 rule->super = super;
1395 list_push_back(&super->list, &rule->list);
1397 list_init(&rule->list);
1399 rule->n_actions = n_actions;
1400 rule->actions = xmemdup(actions, n_actions * sizeof *actions);
1404 static struct rule *
1405 rule_from_cls_rule(const struct cls_rule *cls_rule)
1407 return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
1411 rule_free(struct rule *rule)
1413 free(rule->actions);
1414 free(rule->odp_actions);
1418 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1419 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1420 * through all of its subrules and revalidates them, destroying any that no
1421 * longer has a super-rule (which is probably all of them).
1423 * Before calling this function, the caller must make have removed 'rule' from
1424 * the classifier. If 'rule' is an exact-match rule, the caller is also
1425 * responsible for ensuring that it has been uninstalled from the datapath. */
1427 rule_destroy(struct ofproto *ofproto, struct rule *rule)
1430 struct rule *subrule, *next;
1431 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
1432 revalidate_rule(ofproto, subrule);
1435 list_remove(&rule->list);
1441 rule_has_out_port(const struct rule *rule, uint16_t out_port)
1443 const union ofp_action *oa;
1444 struct actions_iterator i;
1446 if (out_port == htons(OFPP_NONE)) {
1449 for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
1450 oa = actions_next(&i)) {
1451 if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
1458 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1459 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1461 * The flow that 'packet' actually contains does not need to actually match
1462 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1463 * the packet and byte counters for 'rule' will be credited for the packet sent
1464 * out whether or not the packet actually matches 'rule'.
1466 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1467 * the caller must already have accurately composed ODP actions for it given
1468 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1469 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1470 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1471 * actions and apply them to 'packet'. */
1473 rule_execute(struct ofproto *ofproto, struct rule *rule,
1474 struct ofpbuf *packet, const flow_t *flow)
1476 const union odp_action *actions;
1478 struct odp_actions a;
1480 /* Grab or compose the ODP actions.
1482 * The special case for an exact-match 'rule' where 'flow' is not the
1483 * rule's flow is important to avoid, e.g., sending a packet out its input
1484 * port simply because the ODP actions were composed for the wrong
1486 if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) {
1487 struct rule *super = rule->super ? rule->super : rule;
1488 if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
1489 packet, &a, NULL, 0)) {
1492 actions = a.actions;
1493 n_actions = a.n_actions;
1495 actions = rule->odp_actions;
1496 n_actions = rule->n_odp_actions;
1499 /* Execute the ODP actions. */
1500 if (!dpif_execute(&ofproto->dpif, flow->in_port,
1501 actions, n_actions, packet)) {
1502 struct odp_flow_stats stats;
1503 flow_extract_stats(flow, packet, &stats);
1504 update_stats(rule, &stats);
1505 rule->used = time_msec();
1510 rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
1513 struct rule *displaced_rule;
1515 /* Insert the rule in the classifier. */
1516 displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
1517 if (!rule->cr.wc.wildcards) {
1518 rule_make_actions(p, rule, packet);
1521 /* Send the packet and credit it to the rule. */
1524 flow_extract(packet, in_port, &flow);
1525 rule_execute(p, rule, packet, &flow);
1528 /* Install the rule in the datapath only after sending the packet, to
1529 * avoid packet reordering. */
1530 if (rule->cr.wc.wildcards) {
1531 COVERAGE_INC(ofproto_add_wc_flow);
1532 p->need_revalidate = true;
1534 rule_install(p, rule, displaced_rule);
1537 /* Free the rule that was displaced, if any. */
1538 if (displaced_rule) {
1539 rule_destroy(p, displaced_rule);
1543 static struct rule *
1544 rule_create_subrule(struct ofproto *ofproto, struct rule *rule,
1547 struct rule *subrule = rule_create(rule, NULL, 0,
1548 rule->idle_timeout, rule->hard_timeout);
1549 COVERAGE_INC(ofproto_subrule_create);
1550 cls_rule_from_flow(&subrule->cr, flow, 0,
1551 (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
1552 : rule->cr.priority));
1553 classifier_insert_exact(&ofproto->cls, &subrule->cr);
1559 rule_remove(struct ofproto *ofproto, struct rule *rule)
1561 if (rule->cr.wc.wildcards) {
1562 COVERAGE_INC(ofproto_del_wc_flow);
1563 ofproto->need_revalidate = true;
1565 rule_uninstall(ofproto, rule);
1567 classifier_remove(&ofproto->cls, &rule->cr);
1568 rule_destroy(ofproto, rule);
1571 /* Returns true if the actions changed, false otherwise. */
1573 rule_make_actions(struct ofproto *p, struct rule *rule,
1574 const struct ofpbuf *packet)
1576 const struct rule *super;
1577 struct odp_actions a;
1580 assert(!rule->cr.wc.wildcards);
1582 super = rule->super ? rule->super : rule;
1584 xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p,
1585 packet, &a, &rule->tags, &rule->may_install);
1587 actions_len = a.n_actions * sizeof *a.actions;
1588 if (rule->n_odp_actions != a.n_actions
1589 || memcmp(rule->odp_actions, a.actions, actions_len)) {
1590 COVERAGE_INC(ofproto_odp_unchanged);
1591 free(rule->odp_actions);
1592 rule->n_odp_actions = a.n_actions;
1593 rule->odp_actions = xmemdup(a.actions, actions_len);
1601 do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags,
1602 struct odp_flow_put *put)
1604 memset(&put->flow.stats, 0, sizeof put->flow.stats);
1605 put->flow.key = rule->cr.flow;
1606 put->flow.actions = rule->odp_actions;
1607 put->flow.n_actions = rule->n_odp_actions;
1609 return dpif_flow_put(&ofproto->dpif, put);
1613 rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule)
1615 assert(!rule->cr.wc.wildcards);
1617 if (rule->may_install) {
1618 struct odp_flow_put put;
1619 if (!do_put_flow(p, rule,
1620 ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS,
1622 rule->installed = true;
1623 if (displaced_rule) {
1624 update_stats(rule, &put.flow.stats);
1625 rule_post_uninstall(p, displaced_rule);
1628 } else if (displaced_rule) {
1629 rule_uninstall(p, displaced_rule);
1634 rule_reinstall(struct ofproto *ofproto, struct rule *rule)
1636 if (rule->installed) {
1637 struct odp_flow_put put;
1638 COVERAGE_INC(ofproto_dp_missed);
1639 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1641 rule_install(ofproto, rule, NULL);
1646 rule_update_actions(struct ofproto *ofproto, struct rule *rule)
1648 bool actions_changed = rule_make_actions(ofproto, rule, NULL);
1649 if (rule->may_install) {
1650 if (rule->installed) {
1651 if (actions_changed) {
1652 /* XXX should really do rule_post_uninstall() for the *old* set
1653 * of actions, and distinguish the old stats from the new. */
1654 struct odp_flow_put put;
1655 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1658 rule_install(ofproto, rule, NULL);
1661 rule_uninstall(ofproto, rule);
1666 rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes)
1668 uint64_t total_bytes = rule->byte_count + extra_bytes;
1670 if (ofproto->ofhooks->account_flow_cb
1671 && total_bytes > rule->accounted_bytes)
1673 ofproto->ofhooks->account_flow_cb(
1674 &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
1675 total_bytes - rule->accounted_bytes, ofproto->aux);
1676 rule->accounted_bytes = total_bytes;
1681 rule_uninstall(struct ofproto *p, struct rule *rule)
1683 assert(!rule->cr.wc.wildcards);
1684 if (rule->installed) {
1685 struct odp_flow odp_flow;
1687 odp_flow.key = rule->cr.flow;
1688 odp_flow.actions = NULL;
1689 odp_flow.n_actions = 0;
1690 if (!dpif_flow_del(&p->dpif, &odp_flow)) {
1691 update_stats(rule, &odp_flow.stats);
1693 rule->installed = false;
1695 rule_post_uninstall(p, rule);
1700 rule_post_uninstall(struct ofproto *ofproto, struct rule *rule)
1702 struct rule *super = rule->super;
1704 rule_account(ofproto, rule, 0);
1705 if (ofproto->netflow && rule->byte_count) {
1706 struct ofexpired expired;
1707 expired.flow = rule->cr.flow;
1708 expired.packet_count = rule->packet_count;
1709 expired.byte_count = rule->byte_count;
1710 expired.used = rule->used;
1711 expired.created = rule->created;
1712 expired.tcp_flags = rule->tcp_flags;
1713 expired.ip_tos = rule->ip_tos;
1714 netflow_expire(ofproto->netflow, &expired);
1717 super->packet_count += rule->packet_count;
1718 super->byte_count += rule->byte_count;
1719 super->tcp_flags |= rule->tcp_flags;
1720 if (rule->packet_count) {
1721 super->ip_tos = rule->ip_tos;
1725 /* Reset counters to prevent double counting if the rule ever gets
1727 rule->packet_count = 0;
1728 rule->byte_count = 0;
1729 rule->accounted_bytes = 0;
1730 rule->tcp_flags = 0;
1735 queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
1736 struct rconn_packet_counter *counter)
1738 update_openflow_length(msg);
1739 if (rconn_send(ofconn->rconn, msg, counter)) {
1745 send_error(const struct ofconn *ofconn, const struct ofp_header *oh,
1746 int error, const void *data, size_t len)
1749 struct ofp_error_msg *oem;
1751 if (!(error >> 16)) {
1752 VLOG_WARN_RL(&rl, "not sending bad error code %d to controller",
1757 COVERAGE_INC(ofproto_error);
1758 oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR,
1759 oh ? oh->xid : 0, &buf);
1760 oem->type = htons((unsigned int) error >> 16);
1761 oem->code = htons(error & 0xffff);
1762 memcpy(oem->data, data, len);
1763 queue_tx(buf, ofconn, ofconn->reply_counter);
1767 send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
1770 size_t oh_length = ntohs(oh->length);
1771 send_error(ofconn, oh, error, oh, MIN(oh_length, 64));
1775 hton_ofp_phy_port(struct ofp_phy_port *opp)
1777 opp->port_no = htons(opp->port_no);
1778 opp->config = htonl(opp->config);
1779 opp->state = htonl(opp->state);
1780 opp->curr = htonl(opp->curr);
1781 opp->advertised = htonl(opp->advertised);
1782 opp->supported = htonl(opp->supported);
1783 opp->peer = htonl(opp->peer);
1787 handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh)
1789 struct ofp_header *rq = oh;
1790 queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter);
1795 handle_features_request(struct ofproto *p, struct ofconn *ofconn,
1796 struct ofp_header *oh)
1798 struct ofp_switch_features *osf;
1800 unsigned int port_no;
1801 struct ofport *port;
1803 osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
1804 osf->datapath_id = htonll(p->datapath_id);
1805 osf->n_buffers = htonl(pktbuf_capacity());
1807 osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
1808 OFPC_PORT_STATS | OFPC_MULTI_PHY_TX);
1809 osf->actions = htonl((1u << OFPAT_OUTPUT) |
1810 (1u << OFPAT_SET_VLAN_VID) |
1811 (1u << OFPAT_SET_VLAN_PCP) |
1812 (1u << OFPAT_STRIP_VLAN) |
1813 (1u << OFPAT_SET_DL_SRC) |
1814 (1u << OFPAT_SET_DL_DST) |
1815 (1u << OFPAT_SET_NW_SRC) |
1816 (1u << OFPAT_SET_NW_DST) |
1817 (1u << OFPAT_SET_TP_SRC) |
1818 (1u << OFPAT_SET_TP_DST));
1820 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1821 hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
1824 queue_tx(buf, ofconn, ofconn->reply_counter);
1829 handle_get_config_request(struct ofproto *p, struct ofconn *ofconn,
1830 struct ofp_header *oh)
1833 struct ofp_switch_config *osc;
1837 /* Figure out flags. */
1838 dpif_get_drop_frags(&p->dpif, &drop_frags);
1839 flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
1840 if (ofconn->send_flow_exp) {
1841 flags |= OFPC_SEND_FLOW_EXP;
1845 osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
1846 osc->flags = htons(flags);
1847 osc->miss_send_len = htons(ofconn->miss_send_len);
1848 queue_tx(buf, ofconn, ofconn->reply_counter);
1854 handle_set_config(struct ofproto *p, struct ofconn *ofconn,
1855 struct ofp_switch_config *osc)
1860 error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc);
1864 flags = ntohs(osc->flags);
1866 ofconn->send_flow_exp = (flags & OFPC_SEND_FLOW_EXP) != 0;
1868 if (ofconn == p->controller) {
1869 switch (flags & OFPC_FRAG_MASK) {
1870 case OFPC_FRAG_NORMAL:
1871 dpif_set_drop_frags(&p->dpif, false);
1873 case OFPC_FRAG_DROP:
1874 dpif_set_drop_frags(&p->dpif, true);
1877 VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
1883 if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) {
1884 if (ntohs(osc->miss_send_len) != 0) {
1885 ofconn->pktbuf = pktbuf_create();
1887 pktbuf_destroy(ofconn->pktbuf);
1891 ofconn->miss_send_len = ntohs(osc->miss_send_len);
1897 add_output_group_action(struct odp_actions *actions, uint16_t group)
1899 odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group;
1903 add_controller_action(struct odp_actions *actions,
1904 const struct ofp_action_output *oao)
1906 union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
1907 a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
1910 struct action_xlate_ctx {
1912 const flow_t *flow; /* Flow to which these actions correspond. */
1913 int recurse; /* Recursion level, via xlate_table_action. */
1914 struct ofproto *ofproto;
1915 const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
1916 * null pointer if we are revalidating
1917 * without a packet to refer to. */
1920 struct odp_actions *out; /* Datapath actions. */
1921 tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
1922 bool may_set_up_flow; /* True ordinarily; false if the actions must
1923 * be reassessed for every packet. */
1926 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
1927 struct action_xlate_ctx *ctx);
1930 add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
1932 const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port);
1935 if (ofport->opp.config & OFPPC_NO_FWD) {
1936 /* Forwarding disabled on port. */
1941 * We don't have an ofport record for this port, but it doesn't hurt to
1942 * allow forwarding to it anyhow. Maybe such a port will appear later
1943 * and we're pre-populating the flow table.
1947 odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port;
1950 static struct rule *
1951 lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow)
1954 rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
1956 /* The rule we found might not be valid, since we could be in need of
1957 * revalidation. If it is not valid, don't return it. */
1960 && ofproto->need_revalidate
1961 && !revalidate_rule(ofproto, rule)) {
1962 COVERAGE_INC(ofproto_invalidated);
1970 xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
1972 if (!ctx->recurse) {
1977 flow.in_port = in_port;
1979 rule = lookup_valid_rule(ctx->ofproto, &flow);
1986 do_xlate_actions(rule->actions, rule->n_actions, ctx);
1993 xlate_output_action(struct action_xlate_ctx *ctx,
1994 const struct ofp_action_output *oao)
1998 switch (ntohs(oao->port)) {
2000 add_output_action(ctx, ctx->flow->in_port);
2003 xlate_table_action(ctx, ctx->flow->in_port);
2006 if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
2007 ctx->out, ctx->tags,
2008 ctx->ofproto->aux)) {
2009 COVERAGE_INC(ofproto_uninstallable);
2010 ctx->may_set_up_flow = false;
2014 add_output_group_action(ctx->out, DP_GROUP_FLOOD);
2017 add_output_group_action(ctx->out, DP_GROUP_ALL);
2019 case OFPP_CONTROLLER:
2020 add_controller_action(ctx->out, oao);
2023 add_output_action(ctx, ODPP_LOCAL);
2026 odp_port = ofp_port_to_odp_port(ntohs(oao->port));
2027 if (odp_port != ctx->flow->in_port) {
2028 add_output_action(ctx, odp_port);
2035 xlate_nicira_action(struct action_xlate_ctx *ctx,
2036 const struct nx_action_header *nah)
2038 const struct nx_action_resubmit *nar;
2039 int subtype = ntohs(nah->subtype);
2041 assert(nah->vendor == htonl(NX_VENDOR_ID));
2043 case NXAST_RESUBMIT:
2044 nar = (const struct nx_action_resubmit *) nah;
2045 xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
2049 VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
2055 do_xlate_actions(const union ofp_action *in, size_t n_in,
2056 struct action_xlate_ctx *ctx)
2058 struct actions_iterator iter;
2059 const union ofp_action *ia;
2060 const struct ofport *port;
2062 port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_port);
2063 if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
2064 port->opp.config & (eth_addr_equals(ctx->flow->dl_dst, stp_eth_addr)
2065 ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
2066 /* Drop this flow. */
2070 for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
2071 uint16_t type = ntohs(ia->type);
2072 union odp_action *oa;
2076 xlate_output_action(ctx, &ia->output);
2079 case OFPAT_SET_VLAN_VID:
2080 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID);
2081 oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid;
2084 case OFPAT_SET_VLAN_PCP:
2085 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP);
2086 oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp;
2089 case OFPAT_STRIP_VLAN:
2090 odp_actions_add(ctx->out, ODPAT_STRIP_VLAN);
2093 case OFPAT_SET_DL_SRC:
2094 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC);
2095 memcpy(oa->dl_addr.dl_addr,
2096 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2099 case OFPAT_SET_DL_DST:
2100 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST);
2101 memcpy(oa->dl_addr.dl_addr,
2102 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2105 case OFPAT_SET_NW_SRC:
2106 oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC);
2107 oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
2110 case OFPAT_SET_TP_SRC:
2111 oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC);
2112 oa->tp_port.tp_port = ia->tp_port.tp_port;
2116 xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
2120 VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
2127 xlate_actions(const union ofp_action *in, size_t n_in,
2128 const flow_t *flow, struct ofproto *ofproto,
2129 const struct ofpbuf *packet,
2130 struct odp_actions *out, tag_type *tags, bool *may_set_up_flow)
2132 tag_type no_tags = 0;
2133 struct action_xlate_ctx ctx;
2134 COVERAGE_INC(ofproto_ofp2odp);
2135 odp_actions_init(out);
2138 ctx.ofproto = ofproto;
2139 ctx.packet = packet;
2141 ctx.tags = tags ? tags : &no_tags;
2142 ctx.may_set_up_flow = true;
2143 do_xlate_actions(in, n_in, &ctx);
2145 /* Check with in-band control to see if we're allowed to set up this
2147 if (!in_band_rule_check(ofproto->in_band, flow, out)) {
2148 ctx.may_set_up_flow = false;
2151 if (may_set_up_flow) {
2152 *may_set_up_flow = ctx.may_set_up_flow;
2154 if (odp_actions_overflow(out)) {
2155 odp_actions_init(out);
2156 return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
2162 handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
2163 struct ofp_header *oh)
2165 struct ofp_packet_out *opo;
2166 struct ofpbuf payload, *buffer;
2167 struct odp_actions actions;
2173 error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
2177 opo = (struct ofp_packet_out *) oh;
2179 COVERAGE_INC(ofproto_packet_out);
2180 if (opo->buffer_id != htonl(UINT32_MAX)) {
2181 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id),
2183 if (error || !buffer) {
2191 flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
2192 error = xlate_actions((const union ofp_action *) opo->actions, n_actions,
2193 &flow, p, &payload, &actions, NULL, NULL);
2198 dpif_execute(&p->dpif, flow.in_port, actions.actions, actions.n_actions,
2200 ofpbuf_delete(buffer);
2206 update_port_config(struct ofproto *p, struct ofport *port,
2207 uint32_t config, uint32_t mask)
2209 mask &= config ^ port->opp.config;
2210 if (mask & OFPPC_PORT_DOWN) {
2211 if (config & OFPPC_PORT_DOWN) {
2212 netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
2214 netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
2217 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2218 if (mask & REVALIDATE_BITS) {
2219 COVERAGE_INC(ofproto_costly_flags);
2220 port->opp.config ^= mask & REVALIDATE_BITS;
2221 p->need_revalidate = true;
2223 #undef REVALIDATE_BITS
2224 if (mask & OFPPC_NO_FLOOD) {
2225 port->opp.config ^= OFPPC_NO_FLOOD;
2226 refresh_port_group(p, DP_GROUP_FLOOD);
2228 if (mask & OFPPC_NO_PACKET_IN) {
2229 port->opp.config ^= OFPPC_NO_PACKET_IN;
2234 handle_port_mod(struct ofproto *p, struct ofp_header *oh)
2236 const struct ofp_port_mod *opm;
2237 struct ofport *port;
2240 error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
2244 opm = (struct ofp_port_mod *) oh;
2246 port = port_array_get(&p->ports,
2247 ofp_port_to_odp_port(ntohs(opm->port_no)));
2249 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
2250 } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
2251 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
2253 update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask));
2254 if (opm->advertise) {
2255 netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
2261 static struct ofpbuf *
2262 make_stats_reply(uint32_t xid, uint16_t type, size_t body_len)
2264 struct ofp_stats_reply *osr;
2267 msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
2268 osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
2270 osr->flags = htons(0);
2274 static struct ofpbuf *
2275 start_stats_reply(const struct ofp_stats_request *request, size_t body_len)
2277 return make_stats_reply(request->header.xid, request->type, body_len);
2281 append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp)
2283 struct ofpbuf *msg = *msgp;
2284 assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
2285 if (nbytes + msg->size > UINT16_MAX) {
2286 struct ofp_stats_reply *reply = msg->data;
2287 reply->flags = htons(OFPSF_REPLY_MORE);
2288 *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes);
2289 queue_tx(msg, ofconn, ofconn->reply_counter);
2291 return ofpbuf_put_uninit(*msgp, nbytes);
2295 handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn,
2296 struct ofp_stats_request *request)
2298 struct ofp_desc_stats *ods;
2301 msg = start_stats_reply(request, sizeof *ods);
2302 ods = append_stats_reply(sizeof *ods, ofconn, &msg);
2303 strncpy(ods->mfr_desc, p->manufacturer, sizeof ods->mfr_desc);
2304 strncpy(ods->hw_desc, p->hardware, sizeof ods->hw_desc);
2305 strncpy(ods->sw_desc, p->software, sizeof ods->sw_desc);
2306 strncpy(ods->serial_num, p->serial, sizeof ods->serial_num);
2307 queue_tx(msg, ofconn, ofconn->reply_counter);
2313 count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
2315 struct rule *rule = rule_from_cls_rule(cls_rule);
2316 int *n_subrules = n_subrules_;
2324 handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn,
2325 struct ofp_stats_request *request)
2327 struct ofp_table_stats *ots;
2329 struct odp_stats dpstats;
2330 int n_exact, n_subrules, n_wild;
2332 msg = start_stats_reply(request, sizeof *ots * 2);
2334 /* Count rules of various kinds. */
2336 classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
2337 n_exact = classifier_count_exact(&p->cls) - n_subrules;
2338 n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
2341 dpif_get_dp_stats(&p->dpif, &dpstats);
2342 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2343 memset(ots, 0, sizeof *ots);
2344 ots->table_id = TABLEID_HASH;
2345 strcpy(ots->name, "hash");
2346 ots->wildcards = htonl(0);
2347 ots->max_entries = htonl(dpstats.max_capacity);
2348 ots->active_count = htonl(n_exact);
2349 ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit +
2351 ots->matched_count = htonll(dpstats.n_hit); /* XXX */
2353 /* Classifier table. */
2354 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2355 memset(ots, 0, sizeof *ots);
2356 ots->table_id = TABLEID_CLASSIFIER;
2357 strcpy(ots->name, "classifier");
2358 ots->wildcards = htonl(OFPFW_ALL);
2359 ots->max_entries = htonl(65536);
2360 ots->active_count = htonl(n_wild);
2361 ots->lookup_count = htonll(0); /* XXX */
2362 ots->matched_count = htonll(0); /* XXX */
2364 queue_tx(msg, ofconn, ofconn->reply_counter);
2369 handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn,
2370 struct ofp_stats_request *request)
2372 struct ofp_port_stats *ops;
2374 struct ofport *port;
2375 unsigned int port_no;
2377 msg = start_stats_reply(request, sizeof *ops * 16);
2378 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
2379 struct netdev_stats stats;
2381 /* Intentionally ignore return value, since errors will set 'stats' to
2382 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2384 netdev_get_stats(port->netdev, &stats);
2386 ops = append_stats_reply(sizeof *ops, ofconn, &msg);
2387 ops->port_no = htons(odp_port_to_ofp_port(port_no));
2388 memset(ops->pad, 0, sizeof ops->pad);
2389 ops->rx_packets = htonll(stats.rx_packets);
2390 ops->tx_packets = htonll(stats.tx_packets);
2391 ops->rx_bytes = htonll(stats.rx_bytes);
2392 ops->tx_bytes = htonll(stats.tx_bytes);
2393 ops->rx_dropped = htonll(stats.rx_dropped);
2394 ops->tx_dropped = htonll(stats.tx_dropped);
2395 ops->rx_errors = htonll(stats.rx_errors);
2396 ops->tx_errors = htonll(stats.tx_errors);
2397 ops->rx_frame_err = htonll(stats.rx_frame_errors);
2398 ops->rx_over_err = htonll(stats.rx_over_errors);
2399 ops->rx_crc_err = htonll(stats.rx_crc_errors);
2400 ops->collisions = htonll(stats.collisions);
2403 queue_tx(msg, ofconn, ofconn->reply_counter);
2407 struct flow_stats_cbdata {
2408 struct ofproto *ofproto;
2409 struct ofconn *ofconn;
2415 query_stats(struct ofproto *p, struct rule *rule,
2416 uint64_t *packet_countp, uint64_t *byte_countp)
2418 uint64_t packet_count, byte_count;
2419 struct rule *subrule;
2420 struct odp_flow *odp_flows;
2423 packet_count = rule->packet_count;
2424 byte_count = rule->byte_count;
2426 n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1;
2427 odp_flows = xcalloc(1, n_odp_flows * sizeof *odp_flows);
2428 if (rule->cr.wc.wildcards) {
2430 LIST_FOR_EACH (subrule, struct rule, list, &rule->list) {
2431 odp_flows[i++].key = subrule->cr.flow;
2432 packet_count += subrule->packet_count;
2433 byte_count += subrule->byte_count;
2436 odp_flows[0].key = rule->cr.flow;
2439 if (!dpif_flow_get_multiple(&p->dpif, odp_flows, n_odp_flows)) {
2441 for (i = 0; i < n_odp_flows; i++) {
2442 struct odp_flow *odp_flow = &odp_flows[i];
2443 packet_count += odp_flow->stats.n_packets;
2444 byte_count += odp_flow->stats.n_bytes;
2449 *packet_countp = packet_count;
2450 *byte_countp = byte_count;
2454 flow_stats_cb(struct cls_rule *rule_, void *cbdata_)
2456 struct rule *rule = rule_from_cls_rule(rule_);
2457 struct flow_stats_cbdata *cbdata = cbdata_;
2458 struct ofp_flow_stats *ofs;
2459 uint64_t packet_count, byte_count;
2460 size_t act_len, len;
2462 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2466 act_len = sizeof *rule->actions * rule->n_actions;
2467 len = offsetof(struct ofp_flow_stats, actions) + act_len;
2469 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2471 ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg);
2472 ofs->length = htons(len);
2473 ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
2475 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofs->match);
2476 ofs->duration = htonl((time_msec() - rule->created) / 1000);
2477 ofs->priority = htons(rule->cr.priority);
2478 ofs->idle_timeout = htons(rule->idle_timeout);
2479 ofs->hard_timeout = htons(rule->hard_timeout);
2480 memset(ofs->pad2, 0, sizeof ofs->pad2);
2481 ofs->packet_count = htonll(packet_count);
2482 ofs->byte_count = htonll(byte_count);
2483 memcpy(ofs->actions, rule->actions, act_len);
2487 table_id_to_include(uint8_t table_id)
2489 return (table_id == TABLEID_HASH ? CLS_INC_EXACT
2490 : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD
2491 : table_id == 0xff ? CLS_INC_ALL
2496 handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn,
2497 const struct ofp_stats_request *osr,
2500 struct ofp_flow_stats_request *fsr;
2501 struct flow_stats_cbdata cbdata;
2502 struct cls_rule target;
2504 if (arg_size != sizeof *fsr) {
2505 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2507 fsr = (struct ofp_flow_stats_request *) osr->body;
2509 COVERAGE_INC(ofproto_flows_req);
2511 cbdata.ofconn = ofconn;
2512 cbdata.out_port = fsr->out_port;
2513 cbdata.msg = start_stats_reply(osr, 1024);
2514 cls_rule_from_match(&target, &fsr->match, 0);
2515 classifier_for_each_match(&p->cls, &target,
2516 table_id_to_include(fsr->table_id),
2517 flow_stats_cb, &cbdata);
2518 queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
2522 struct flow_stats_ds_cbdata {
2523 struct ofproto *ofproto;
2528 flow_stats_ds_cb(struct cls_rule *rule_, void *cbdata_)
2530 struct rule *rule = rule_from_cls_rule(rule_);
2531 struct flow_stats_ds_cbdata *cbdata = cbdata_;
2532 struct ds *results = cbdata->results;
2533 struct ofp_match match;
2534 uint64_t packet_count, byte_count;
2535 size_t act_len = sizeof *rule->actions * rule->n_actions;
2537 /* Don't report on subrules. */
2538 if (rule->super != NULL) {
2542 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2543 flow_to_ovs_match(&rule->cr.flow, rule->cr.wc.wildcards, &match);
2545 ds_put_format(results, "duration=%llds, ",
2546 (time_msec() - rule->created) / 1000);
2547 ds_put_format(results, "priority=%u, ", rule->cr.priority);
2548 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
2549 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
2550 ofp_print_match(results, &match, true);
2551 ofp_print_actions(results, &rule->actions->header, act_len);
2552 ds_put_cstr(results, "\n");
2555 /* Adds a pretty-printed description of all flows to 'results', including
2556 * those marked hidden by secchan (e.g., by in-band control). */
2558 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
2560 struct ofp_match match;
2561 struct cls_rule target;
2562 struct flow_stats_ds_cbdata cbdata;
2564 memset(&match, 0, sizeof match);
2565 match.wildcards = htonl(OFPFW_ALL);
2568 cbdata.results = results;
2570 cls_rule_from_match(&target, &match, 0);
2571 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2572 flow_stats_ds_cb, &cbdata);
2575 struct aggregate_stats_cbdata {
2576 struct ofproto *ofproto;
2578 uint64_t packet_count;
2579 uint64_t byte_count;
2584 aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_)
2586 struct rule *rule = rule_from_cls_rule(rule_);
2587 struct aggregate_stats_cbdata *cbdata = cbdata_;
2588 uint64_t packet_count, byte_count;
2590 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2594 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2596 cbdata->packet_count += packet_count;
2597 cbdata->byte_count += byte_count;
2602 handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn,
2603 const struct ofp_stats_request *osr,
2606 struct ofp_aggregate_stats_request *asr;
2607 struct ofp_aggregate_stats_reply *reply;
2608 struct aggregate_stats_cbdata cbdata;
2609 struct cls_rule target;
2612 if (arg_size != sizeof *asr) {
2613 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2615 asr = (struct ofp_aggregate_stats_request *) osr->body;
2617 COVERAGE_INC(ofproto_agg_request);
2619 cbdata.out_port = asr->out_port;
2620 cbdata.packet_count = 0;
2621 cbdata.byte_count = 0;
2623 cls_rule_from_match(&target, &asr->match, 0);
2624 classifier_for_each_match(&p->cls, &target,
2625 table_id_to_include(asr->table_id),
2626 aggregate_stats_cb, &cbdata);
2628 msg = start_stats_reply(osr, sizeof *reply);
2629 reply = append_stats_reply(sizeof *reply, ofconn, &msg);
2630 reply->flow_count = htonl(cbdata.n_flows);
2631 reply->packet_count = htonll(cbdata.packet_count);
2632 reply->byte_count = htonll(cbdata.byte_count);
2633 queue_tx(msg, ofconn, ofconn->reply_counter);
2638 handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
2639 struct ofp_header *oh)
2641 struct ofp_stats_request *osr;
2645 error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr,
2650 osr = (struct ofp_stats_request *) oh;
2652 switch (ntohs(osr->type)) {
2654 return handle_desc_stats_request(p, ofconn, osr);
2657 return handle_flow_stats_request(p, ofconn, osr, arg_size);
2659 case OFPST_AGGREGATE:
2660 return handle_aggregate_stats_request(p, ofconn, osr, arg_size);
2663 return handle_table_stats_request(p, ofconn, osr);
2666 return handle_port_stats_request(p, ofconn, osr);
2669 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2672 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
2676 static long long int
2677 msec_from_nsec(uint64_t sec, uint32_t nsec)
2679 return !sec ? 0 : sec * 1000 + nsec / 1000000;
2683 update_time(struct rule *rule, const struct odp_flow_stats *stats)
2685 long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec);
2686 if (used > rule->used) {
2692 update_stats(struct rule *rule, const struct odp_flow_stats *stats)
2694 update_time(rule, stats);
2695 rule->packet_count += stats->n_packets;
2696 rule->byte_count += stats->n_bytes;
2697 rule->tcp_flags |= stats->tcp_flags;
2698 if (stats->n_packets) {
2699 rule->ip_tos = stats->ip_tos;
2704 add_flow(struct ofproto *p, struct ofconn *ofconn,
2705 struct ofp_flow_mod *ofm, size_t n_actions)
2707 struct ofpbuf *packet;
2712 rule = rule_create(NULL, (const union ofp_action *) ofm->actions,
2713 n_actions, ntohs(ofm->idle_timeout),
2714 ntohs(ofm->hard_timeout));
2715 cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
2719 if (ofm->buffer_id != htonl(UINT32_MAX)) {
2720 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
2724 rule_insert(p, rule, packet, in_port);
2725 ofpbuf_delete(packet);
2730 modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
2731 size_t n_actions, uint16_t command, struct rule *rule)
2733 if (rule_is_hidden(rule)) {
2737 if (command == OFPFC_DELETE) {
2738 rule_remove(p, rule);
2740 size_t actions_len = n_actions * sizeof *rule->actions;
2742 if (n_actions == rule->n_actions
2743 && !memcmp(ofm->actions, rule->actions, actions_len))
2748 free(rule->actions);
2749 rule->actions = xmemdup(ofm->actions, actions_len);
2750 rule->n_actions = n_actions;
2752 if (rule->cr.wc.wildcards) {
2753 COVERAGE_INC(ofproto_mod_wc_flow);
2754 p->need_revalidate = true;
2756 rule_update_actions(p, rule);
2764 modify_flows_strict(struct ofproto *p, const struct ofp_flow_mod *ofm,
2765 size_t n_actions, uint16_t command)
2771 flow_from_match(&flow, &wildcards, &ofm->match);
2772 rule = rule_from_cls_rule(classifier_find_rule_exactly(
2773 &p->cls, &flow, wildcards,
2774 ntohs(ofm->priority)));
2777 if (command == OFPFC_DELETE
2778 && ofm->out_port != htons(OFPP_NONE)
2779 && !rule_has_out_port(rule, ofm->out_port)) {
2783 modify_flow(p, ofm, n_actions, command, rule);
2788 struct modify_flows_cbdata {
2789 struct ofproto *ofproto;
2790 const struct ofp_flow_mod *ofm;
2797 modify_flows_cb(struct cls_rule *rule_, void *cbdata_)
2799 struct rule *rule = rule_from_cls_rule(rule_);
2800 struct modify_flows_cbdata *cbdata = cbdata_;
2802 if (cbdata->out_port != htons(OFPP_NONE)
2803 && !rule_has_out_port(rule, cbdata->out_port)) {
2807 modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
2808 cbdata->command, rule);
2812 modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
2813 size_t n_actions, uint16_t command)
2815 struct modify_flows_cbdata cbdata;
2816 struct cls_rule target;
2820 cbdata.out_port = (command == OFPFC_DELETE ? ofm->out_port
2821 : htons(OFPP_NONE));
2822 cbdata.n_actions = n_actions;
2823 cbdata.command = command;
2825 cls_rule_from_match(&target, &ofm->match, 0);
2827 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2828 modify_flows_cb, &cbdata);
2833 handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
2834 struct ofp_flow_mod *ofm)
2839 error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
2840 sizeof *ofm->actions, &n_actions);
2845 normalize_match(&ofm->match);
2846 if (!ofm->match.wildcards) {
2847 ofm->priority = htons(UINT16_MAX);
2850 error = validate_actions((const union ofp_action *) ofm->actions,
2851 n_actions, p->max_ports);
2856 switch (ntohs(ofm->command)) {
2858 return add_flow(p, ofconn, ofm, n_actions);
2861 return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
2863 case OFPFC_MODIFY_STRICT:
2864 return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
2867 return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
2869 case OFPFC_DELETE_STRICT:
2870 return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
2873 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
2878 send_capability_reply(struct ofproto *p, struct ofconn *ofconn, uint32_t xid)
2880 struct ofmp_capability_reply *ocr;
2882 char capabilities[] = "com.nicira.mgmt.manager=false\n";
2884 ocr = make_openflow_xid(sizeof(*ocr), OFPT_VENDOR, xid, &b);
2885 ocr->header.header.vendor = htonl(NX_VENDOR_ID);
2886 ocr->header.header.subtype = htonl(NXT_MGMT);
2887 ocr->header.type = htons(OFMPT_CAPABILITY_REPLY);
2889 ocr->format = htonl(OFMPCOF_SIMPLE);
2890 ocr->mgmt_id = htonll(p->mgmt_id);
2892 ofpbuf_put(b, capabilities, strlen(capabilities));
2894 queue_tx(b, ofconn, ofconn->reply_counter);
2898 handle_ofmp(struct ofproto *p, struct ofconn *ofconn,
2899 struct ofmp_header *ofmph)
2901 size_t msg_len = ntohs(ofmph->header.header.length);
2902 if (msg_len < sizeof(*ofmph)) {
2903 VLOG_WARN_RL(&rl, "dropping short managment message: %d\n", msg_len);
2904 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2907 if (ofmph->type == htons(OFMPT_CAPABILITY_REQUEST)) {
2908 struct ofmp_capability_request *ofmpcr;
2910 if (msg_len < sizeof(struct ofmp_capability_request)) {
2911 VLOG_WARN_RL(&rl, "dropping short capability request: %d\n",
2913 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2916 ofmpcr = (struct ofmp_capability_request *)ofmph;
2917 if (ofmpcr->format != htonl(OFMPCAF_SIMPLE)) {
2918 /* xxx Find a better type than bad subtype */
2919 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2922 send_capability_reply(p, ofconn, ofmph->header.header.xid);
2925 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2930 handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
2932 struct ofp_vendor_header *ovh = msg;
2933 struct nicira_header *nh;
2935 if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
2936 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2938 if (ovh->vendor != htonl(NX_VENDOR_ID)) {
2939 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2941 if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
2942 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2946 switch (ntohl(nh->subtype)) {
2947 case NXT_STATUS_REQUEST:
2948 return switch_status_handle_request(p->switch_status, ofconn->rconn,
2951 case NXT_ACT_SET_CONFIG:
2952 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2954 case NXT_ACT_GET_CONFIG:
2955 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2957 case NXT_COMMAND_REQUEST:
2959 return executer_handle_request(p->executer, ofconn->rconn, msg);
2964 return handle_ofmp(p, ofconn, msg);
2967 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2971 handle_openflow(struct ofconn *ofconn, struct ofproto *p,
2972 struct ofpbuf *ofp_msg)
2974 struct ofp_header *oh = ofp_msg->data;
2977 COVERAGE_INC(ofproto_recv_openflow);
2979 case OFPT_ECHO_REQUEST:
2980 error = handle_echo_request(ofconn, oh);
2983 case OFPT_ECHO_REPLY:
2987 case OFPT_FEATURES_REQUEST:
2988 error = handle_features_request(p, ofconn, oh);
2991 case OFPT_GET_CONFIG_REQUEST:
2992 error = handle_get_config_request(p, ofconn, oh);
2995 case OFPT_SET_CONFIG:
2996 error = handle_set_config(p, ofconn, ofp_msg->data);
2999 case OFPT_PACKET_OUT:
3000 error = handle_packet_out(p, ofconn, ofp_msg->data);
3004 error = handle_port_mod(p, oh);
3008 error = handle_flow_mod(p, ofconn, ofp_msg->data);
3011 case OFPT_STATS_REQUEST:
3012 error = handle_stats_request(p, ofconn, oh);
3016 error = handle_vendor(p, ofconn, ofp_msg->data);
3020 if (VLOG_IS_WARN_ENABLED()) {
3021 char *s = ofp_to_string(oh, ntohs(oh->length), 2);
3022 VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
3025 error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
3030 send_error_oh(ofconn, ofp_msg->data, error);
3035 handle_odp_msg(struct ofproto *p, struct ofpbuf *packet)
3037 struct odp_msg *msg = packet->data;
3038 uint16_t in_port = odp_port_to_ofp_port(msg->port);
3040 struct ofpbuf payload;
3043 /* Handle controller actions. */
3044 if (msg->type == _ODPL_ACTION_NR) {
3045 COVERAGE_INC(ofproto_ctlr_action);
3046 pinsched_send(p->action_sched, in_port, packet,
3047 send_packet_in_action, p);
3051 payload.data = msg + 1;
3052 payload.size = msg->length - sizeof *msg;
3053 flow_extract(&payload, msg->port, &flow);
3055 /* Check with in-band control to see if this packet should be sent
3056 * to the local port regardless of the flow table. */
3057 if (in_band_msg_in_hook(p->in_band, &flow, &payload)) {
3058 union odp_action action;
3060 memset(&action, 0, sizeof(action));
3061 action.output.type = ODPAT_OUTPUT;
3062 action.output.port = ODPP_LOCAL;
3063 dpif_execute(&p->dpif, flow.in_port, &action, 1, &payload);
3066 rule = lookup_valid_rule(p, &flow);
3068 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3069 struct ofport *port = port_array_get(&p->ports, msg->port);
3071 if (port->opp.config & OFPPC_NO_PACKET_IN) {
3072 COVERAGE_INC(ofproto_no_packet_in);
3073 /* XXX install 'drop' flow entry */
3074 ofpbuf_delete(packet);
3078 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port);
3081 COVERAGE_INC(ofproto_packet_in);
3082 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
3086 if (rule->cr.wc.wildcards) {
3087 rule = rule_create_subrule(p, rule, &flow);
3088 rule_make_actions(p, rule, packet);
3090 if (!rule->may_install) {
3091 /* The rule is not installable, that is, we need to process every
3092 * packet, so process the current packet and set its actions into
3094 rule_make_actions(p, rule, packet);
3096 /* XXX revalidate rule if it needs it */
3100 rule_execute(p, rule, &payload, &flow);
3101 rule_reinstall(p, rule);
3103 if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY
3104 && rconn_is_connected(p->controller->rconn)) {
3106 * Extra-special case for fail-open mode.
3108 * We are in fail-open mode and the packet matched the fail-open rule,
3109 * but we are connected to a controller too. We should send the packet
3110 * up to the controller in the hope that it will try to set up a flow
3111 * and thereby allow us to exit fail-open.
3113 * See the top-level comment in fail-open.c for more information.
3115 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
3117 ofpbuf_delete(packet);
3122 revalidate_cb(struct cls_rule *sub_, void *cbdata_)
3124 struct rule *sub = rule_from_cls_rule(sub_);
3125 struct revalidate_cbdata *cbdata = cbdata_;
3127 if (cbdata->revalidate_all
3128 || (cbdata->revalidate_subrules && sub->super)
3129 || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) {
3130 revalidate_rule(cbdata->ofproto, sub);
3135 revalidate_rule(struct ofproto *p, struct rule *rule)
3137 const flow_t *flow = &rule->cr.flow;
3139 COVERAGE_INC(ofproto_revalidate_rule);
3142 super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow));
3144 rule_remove(p, rule);
3146 } else if (super != rule->super) {
3147 COVERAGE_INC(ofproto_revalidate_moved);
3148 list_remove(&rule->list);
3149 list_push_back(&super->list, &rule->list);
3150 rule->super = super;
3151 rule->hard_timeout = super->hard_timeout;
3152 rule->idle_timeout = super->idle_timeout;
3153 rule->created = super->created;
3158 rule_update_actions(p, rule);
3162 static struct ofpbuf *
3163 compose_flow_exp(const struct rule *rule, long long int now, uint8_t reason)
3165 struct ofp_flow_expired *ofe;
3168 ofe = make_openflow(sizeof *ofe, OFPT_FLOW_EXPIRED, &buf);
3169 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofe->match);
3170 ofe->priority = htons(rule->cr.priority);
3171 ofe->reason = reason;
3172 ofe->duration = (now - rule->created) / 1000;
3173 ofe->packet_count = rule->packet_count;
3174 ofe->byte_count = rule->byte_count;
3180 send_flow_exp(struct ofproto *p, struct rule *rule,
3181 long long int now, uint8_t reason)
3183 struct ofconn *ofconn;
3184 struct ofconn *prev;
3187 /* We limit the maximum number of queued flow expirations it by accounting
3188 * them under the counter for replies. That works because preventing
3189 * OpenFlow requests from being processed also prevents new flows from
3190 * being added (and expiring). (It also prevents processing OpenFlow
3191 * requests that would not add new flows, so it is imperfect.) */
3194 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3195 if (ofconn->send_flow_exp && rconn_is_connected(ofconn->rconn)) {
3197 queue_tx(ofpbuf_clone(buf), prev, prev->reply_counter);
3199 buf = compose_flow_exp(rule, now, reason);
3205 queue_tx(buf, prev, prev->reply_counter);
3210 uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule)
3212 assert(rule->installed);
3213 assert(!rule->cr.wc.wildcards);
3216 rule_remove(ofproto, rule);
3218 rule_uninstall(ofproto, rule);
3223 expire_rule(struct cls_rule *cls_rule, void *p_)
3225 struct ofproto *p = p_;
3226 struct rule *rule = rule_from_cls_rule(cls_rule);
3227 long long int hard_expire, idle_expire, expire, now;
3229 hard_expire = (rule->hard_timeout
3230 ? rule->created + rule->hard_timeout * 1000
3232 idle_expire = (rule->idle_timeout
3233 && (rule->super || list_is_empty(&rule->list))
3234 ? rule->used + rule->idle_timeout * 1000
3236 expire = MIN(hard_expire, idle_expire);
3237 if (expire == LLONG_MAX) {
3238 if (rule->installed && time_msec() >= rule->used + 5000) {
3239 uninstall_idle_flow(p, rule);
3246 if (rule->installed && now >= rule->used + 5000) {
3247 uninstall_idle_flow(p, rule);
3252 COVERAGE_INC(ofproto_expired);
3253 if (rule->cr.wc.wildcards) {
3254 /* Update stats. (This code will be a no-op if the rule expired
3255 * due to an idle timeout, because in that case the rule has no
3256 * subrules left.) */
3257 struct rule *subrule, *next;
3258 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
3259 rule_remove(p, subrule);
3263 send_flow_exp(p, rule, now,
3265 ? OFPER_HARD_TIMEOUT : OFPER_IDLE_TIMEOUT));
3266 rule_remove(p, rule);
3270 update_used(struct ofproto *p)
3272 struct odp_flow *flows;
3277 error = dpif_flow_list_all(&p->dpif, &flows, &n_flows);
3282 for (i = 0; i < n_flows; i++) {
3283 struct odp_flow *f = &flows[i];
3286 rule = rule_from_cls_rule(
3287 classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX));
3288 if (!rule || !rule->installed) {
3289 COVERAGE_INC(ofproto_unexpected_rule);
3290 dpif_flow_del(&p->dpif, f);
3294 update_time(rule, &f->stats);
3295 rule_account(p, rule, f->stats.n_bytes);
3301 do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
3302 const struct ofpbuf *packet, int send_len)
3304 struct odp_msg *msg = packet->data;
3305 struct ofpbuf payload;
3309 /* Extract packet payload from 'msg'. */
3310 payload.data = msg + 1;
3311 payload.size = msg->length - sizeof *msg;
3313 /* Construct ofp_packet_in message. */
3314 reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
3315 opi = make_packet_in(buffer_id, odp_port_to_ofp_port(msg->port), reason,
3316 &payload, send_len);
3319 rconn_send_with_limit(ofconn->rconn, opi, ofconn->packet_in_counter, 100);
3323 send_packet_in_action(struct ofpbuf *packet, void *p_)
3325 struct ofproto *p = p_;
3326 struct ofconn *ofconn;
3327 struct odp_msg *msg;
3330 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3331 if (ofconn == p->controller || ofconn->miss_send_len) {
3332 do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg);
3335 ofpbuf_delete(packet);
3339 send_packet_in_miss(struct ofpbuf *packet, void *p_)
3341 struct ofproto *p = p_;
3342 bool in_fail_open = p->fail_open && fail_open_is_active(p->fail_open);
3343 struct ofconn *ofconn;
3344 struct ofpbuf payload;
3345 struct odp_msg *msg;
3348 payload.data = msg + 1;
3349 payload.size = msg->length - sizeof *msg;
3350 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3351 if (ofconn->miss_send_len) {
3352 struct pktbuf *pb = ofconn->pktbuf;
3353 uint32_t buffer_id = (in_fail_open
3355 : pktbuf_save(pb, &payload, msg->port));
3356 int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len
3358 do_send_packet_in(ofconn, buffer_id, packet, send_len);
3361 ofpbuf_delete(packet);
3365 pick_datapath_id(struct dpif *dpif, uint64_t fallback_dpid)
3367 char local_name[IF_NAMESIZE];
3368 uint8_t ea[ETH_ADDR_LEN];
3371 error = dpif_get_name(dpif, local_name, sizeof local_name);
3373 error = netdev_nodev_get_etheraddr(local_name, ea);
3375 return eth_addr_to_uint64(ea);
3377 VLOG_WARN("could not get MAC address for %s (%s)",
3378 local_name, strerror(error));
3381 return fallback_dpid;
3385 pick_fallback_dpid(void)
3387 uint8_t ea[ETH_ADDR_LEN];
3388 eth_addr_random(ea);
3389 ea[0] = 0x00; /* Set Nicira OUI. */
3392 return eth_addr_to_uint64(ea);
3396 default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
3397 struct odp_actions *actions, tag_type *tags,
3400 struct ofproto *ofproto = ofproto_;
3403 /* Drop frames for reserved multicast addresses. */
3404 if (eth_addr_is_reserved(flow->dl_dst)) {
3408 /* Learn source MAC (but don't try to learn from revalidation). */
3409 if (packet != NULL) {
3410 tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src,
3413 /* The log messages here could actually be useful in debugging,
3414 * so keep the rate limit relatively high. */
3415 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
3416 VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
3417 ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
3418 ofproto_revalidate(ofproto, rev_tag);
3422 /* Determine output port. */
3423 out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
3425 add_output_group_action(actions, DP_GROUP_FLOOD);
3426 } else if (out_port != flow->in_port) {
3427 odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port;
3435 static const struct ofhooks default_ofhooks = {
3437 default_normal_ofhook_cb,