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_setup_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 ofproto 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 netdev_monitor *netdev_monitor;
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(const struct ofproto *);
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 odp_stats stats;
271 /* Connect to datapath and start listening for messages. */
272 error = dpif_open(datapath, &dpif);
274 VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
277 error = dpif_get_dp_stats(dpif, &stats);
279 VLOG_ERR("failed to obtain stats for datapath %s: %s",
280 datapath, strerror(error));
284 error = dpif_recv_set_mask(dpif, ODPL_MISS | ODPL_ACTION);
286 VLOG_ERR("failed to listen on datapath %s: %s",
287 datapath, strerror(error));
291 dpif_flow_flush(dpif);
292 dpif_recv_purge(dpif);
294 /* Initialize settings. */
295 p = xcalloc(1, sizeof *p);
296 p->fallback_dpid = pick_fallback_dpid();
297 p->datapath_id = p->fallback_dpid;
298 p->manufacturer = xstrdup("Nicira Networks, Inc.");
299 p->hardware = xstrdup("Reference Implementation");
300 p->software = xstrdup(VERSION BUILDNR);
301 p->serial = xstrdup("None");
303 /* Initialize datapath. */
305 p->netdev_monitor = netdev_monitor_create();
306 port_array_init(&p->ports);
307 shash_init(&p->port_by_name);
308 p->max_ports = stats.max_ports;
310 /* Initialize submodules. */
311 p->switch_status = switch_status_create(p);
315 p->miss_sched = p->action_sched = NULL;
319 /* Initialize flow table. */
320 classifier_init(&p->cls);
321 p->need_revalidate = false;
322 p->next_expiration = time_msec() + 1000;
323 tag_set_init(&p->revalidate_set);
325 /* Initialize OpenFlow connections. */
326 list_init(&p->all_conns);
327 p->controller = ofconn_create(p, rconn_create(5, 8));
328 p->controller->pktbuf = pktbuf_create();
329 p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
335 /* Initialize hooks. */
337 p->ofhooks = ofhooks;
341 p->ofhooks = &default_ofhooks;
343 p->ml = mac_learning_create();
346 /* Register switch status category. */
347 p->ss_cat = switch_status_register(p->switch_status, "remote",
348 rconn_status_cb, p->controller->rconn);
351 error = init_ports(p);
357 /* Pick final datapath ID. */
358 p->datapath_id = pick_datapath_id(p);
359 VLOG_INFO("using datapath ID %012"PRIx64, p->datapath_id);
366 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
368 uint64_t old_dpid = p->datapath_id;
369 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
370 if (p->datapath_id != old_dpid) {
371 VLOG_INFO("datapath ID changed to %012"PRIx64, p->datapath_id);
372 rconn_reconnect(p->controller->rconn);
377 ofproto_set_mgmt_id(struct ofproto *p, uint64_t mgmt_id)
379 p->mgmt_id = mgmt_id;
383 ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
385 probe_interval = probe_interval ? MAX(probe_interval, 5) : 0;
386 rconn_set_probe_interval(p->controller->rconn, probe_interval);
388 int trigger_duration = probe_interval ? probe_interval * 3 : 15;
389 fail_open_set_trigger_duration(p->fail_open, trigger_duration);
394 ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
396 rconn_set_max_backoff(p->controller->rconn, max_backoff);
400 ofproto_set_desc(struct ofproto *p,
401 const char *manufacturer, const char *hardware,
402 const char *software, const char *serial)
405 free(p->manufacturer);
406 p->manufacturer = xstrdup(manufacturer);
410 p->hardware = xstrdup(hardware);
414 p->software = xstrdup(software);
418 p->serial = xstrdup(serial);
423 ofproto_set_in_band(struct ofproto *p, bool in_band)
425 if (in_band != (p->in_band != NULL)) {
427 return in_band_create(p, p->dpif, p->switch_status,
428 p->controller->rconn, &p->in_band);
430 ofproto_set_discovery(p, false, NULL, true);
431 in_band_destroy(p->in_band);
434 rconn_reconnect(p->controller->rconn);
440 ofproto_set_discovery(struct ofproto *p, bool discovery,
441 const char *re, bool update_resolv_conf)
443 if (discovery != (p->discovery != NULL)) {
445 int error = ofproto_set_in_band(p, true);
449 error = discovery_create(re, update_resolv_conf,
450 p->dpif, p->switch_status,
456 discovery_destroy(p->discovery);
459 rconn_disconnect(p->controller->rconn);
460 } else if (discovery) {
461 discovery_set_update_resolv_conf(p->discovery, update_resolv_conf);
462 return discovery_set_accept_controller_re(p->discovery, re);
468 ofproto_set_controller(struct ofproto *ofproto, const char *controller)
470 if (ofproto->discovery) {
472 } else if (controller) {
473 if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) {
474 return rconn_connect(ofproto->controller->rconn, controller);
479 rconn_disconnect(ofproto->controller->rconn);
485 set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp,
486 const struct svec *svec)
488 struct pvconn **pvconns = *pvconnsp;
489 size_t n_pvconns = *n_pvconnsp;
493 for (i = 0; i < n_pvconns; i++) {
494 pvconn_close(pvconns[i]);
498 pvconns = xmalloc(svec->n * sizeof *pvconns);
500 for (i = 0; i < svec->n; i++) {
501 const char *name = svec->names[i];
502 struct pvconn *pvconn;
505 error = pvconn_open(name, &pvconn);
507 pvconns[n_pvconns++] = pvconn;
509 VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
517 *n_pvconnsp = n_pvconns;
523 ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners)
525 return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners);
529 ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops)
531 return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops);
535 ofproto_set_netflow(struct ofproto *ofproto, const struct svec *collectors,
536 uint8_t engine_type, uint8_t engine_id, bool add_id_to_iface)
538 if (collectors && collectors->n) {
539 if (!ofproto->netflow) {
540 ofproto->netflow = netflow_create();
542 netflow_set_engine(ofproto->netflow, engine_type, engine_id,
544 return netflow_set_collectors(ofproto->netflow, collectors);
546 netflow_destroy(ofproto->netflow);
547 ofproto->netflow = NULL;
553 ofproto_set_failure(struct ofproto *ofproto, bool fail_open)
556 struct rconn *rconn = ofproto->controller->rconn;
557 int trigger_duration = rconn_get_probe_interval(rconn) * 3;
558 if (!ofproto->fail_open) {
559 ofproto->fail_open = fail_open_create(ofproto, trigger_duration,
560 ofproto->switch_status,
563 fail_open_set_trigger_duration(ofproto->fail_open,
567 fail_open_destroy(ofproto->fail_open);
568 ofproto->fail_open = NULL;
573 ofproto_set_rate_limit(struct ofproto *ofproto,
574 int rate_limit, int burst_limit)
576 if (rate_limit > 0) {
577 if (!ofproto->miss_sched) {
578 ofproto->miss_sched = pinsched_create(rate_limit, burst_limit,
579 ofproto->switch_status);
580 ofproto->action_sched = pinsched_create(rate_limit, burst_limit,
583 pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit);
584 pinsched_set_limits(ofproto->action_sched,
585 rate_limit, burst_limit);
588 pinsched_destroy(ofproto->miss_sched);
589 ofproto->miss_sched = NULL;
590 pinsched_destroy(ofproto->action_sched);
591 ofproto->action_sched = NULL;
596 ofproto_set_stp(struct ofproto *ofproto UNUSED, bool enable_stp)
600 VLOG_WARN("STP is not yet implemented");
608 ofproto_set_remote_execution(struct ofproto *ofproto, const char *command_acl,
609 const char *command_dir)
612 if (!ofproto->executer) {
613 return executer_create(command_acl, command_dir,
616 executer_set_acl(ofproto->executer, command_acl, command_dir);
619 executer_destroy(ofproto->executer);
620 ofproto->executer = NULL;
626 ofproto_get_datapath_id(const struct ofproto *ofproto)
628 return ofproto->datapath_id;
632 ofproto_get_mgmt_id(const struct ofproto *ofproto)
634 return ofproto->mgmt_id;
638 ofproto_get_probe_interval(const struct ofproto *ofproto)
640 return rconn_get_probe_interval(ofproto->controller->rconn);
644 ofproto_get_max_backoff(const struct ofproto *ofproto)
646 return rconn_get_max_backoff(ofproto->controller->rconn);
650 ofproto_get_in_band(const struct ofproto *ofproto)
652 return ofproto->in_band != NULL;
656 ofproto_get_discovery(const struct ofproto *ofproto)
658 return ofproto->discovery != NULL;
662 ofproto_get_controller(const struct ofproto *ofproto)
664 return rconn_get_name(ofproto->controller->rconn);
668 ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
672 for (i = 0; i < ofproto->n_listeners; i++) {
673 svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
678 ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops)
682 for (i = 0; i < ofproto->n_snoops; i++) {
683 svec_add(snoops, pvconn_get_name(ofproto->snoops[i]));
688 ofproto_destroy(struct ofproto *p)
690 struct ofconn *ofconn, *next_ofconn;
691 struct ofport *ofport;
692 unsigned int port_no;
699 ofproto_flush_flows(p);
700 classifier_destroy(&p->cls);
702 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
704 ofconn_destroy(ofconn, p);
708 netdev_monitor_destroy(p->netdev_monitor);
709 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
712 shash_destroy(&p->port_by_name);
714 switch_status_destroy(p->switch_status);
715 in_band_destroy(p->in_band);
716 discovery_destroy(p->discovery);
717 fail_open_destroy(p->fail_open);
718 pinsched_destroy(p->miss_sched);
719 pinsched_destroy(p->action_sched);
720 executer_destroy(p->executer);
721 netflow_destroy(p->netflow);
723 switch_status_unregister(p->ss_cat);
725 for (i = 0; i < p->n_listeners; i++) {
726 pvconn_close(p->listeners[i]);
730 for (i = 0; i < p->n_snoops; i++) {
731 pvconn_close(p->snoops[i]);
735 mac_learning_destroy(p->ml);
741 ofproto_run(struct ofproto *p)
743 int error = ofproto_run1(p);
745 error = ofproto_run2(p, false);
751 process_port_change(struct ofproto *ofproto, int error, char *devname)
753 if (error == ENOBUFS) {
754 reinit_ports(ofproto);
756 update_port(ofproto, devname);
762 ofproto_run1(struct ofproto *p)
764 struct ofconn *ofconn, *next_ofconn;
769 for (i = 0; i < 50; i++) {
773 error = dpif_recv(p->dpif, &buf);
775 if (error == ENODEV) {
776 /* Someone destroyed the datapath behind our back. The caller
777 * better destroy us and give up, because we're just going to
778 * spin from here on out. */
779 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
780 VLOG_ERR_RL(&rl, "%s: datapath was destroyed externally",
787 handle_odp_msg(p, buf);
790 while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) {
791 process_port_change(p, error, devname);
793 while ((error = netdev_monitor_poll(p->netdev_monitor,
794 &devname)) != EAGAIN) {
795 process_port_change(p, error, 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);
815 fail_open_run(p->fail_open);
817 pinsched_run(p->miss_sched, send_packet_in_miss, p);
818 pinsched_run(p->action_sched, send_packet_in_action, p);
820 executer_run(p->executer);
823 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
825 ofconn_run(ofconn, p);
828 for (i = 0; i < p->n_listeners; i++) {
832 retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
834 ofconn_create(p, rconn_new_from_vconn("passive", vconn));
835 } else if (retval != EAGAIN) {
836 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
840 for (i = 0; i < p->n_snoops; i++) {
844 retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
846 rconn_add_monitor(p->controller->rconn, vconn);
847 } else if (retval != EAGAIN) {
848 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
852 if (time_msec() >= p->next_expiration) {
853 COVERAGE_INC(ofproto_expiration);
854 p->next_expiration = time_msec() + 1000;
857 classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p);
859 /* Let the hook know that we're at a stable point: all outstanding data
860 * in existing flows has been accounted to the account_cb. Thus, the
861 * hook can now reasonably do operations that depend on having accurate
862 * flow volume accounting (currently, that's just bond rebalancing). */
863 if (p->ofhooks->account_checkpoint_cb) {
864 p->ofhooks->account_checkpoint_cb(p->aux);
869 netflow_run(p->netflow);
875 struct revalidate_cbdata {
876 struct ofproto *ofproto;
877 bool revalidate_all; /* Revalidate all exact-match rules? */
878 bool revalidate_subrules; /* Revalidate all exact-match subrules? */
879 struct tag_set revalidate_set; /* Set of tags to revalidate. */
883 ofproto_run2(struct ofproto *p, bool revalidate_all)
885 if (p->need_revalidate || revalidate_all
886 || !tag_set_is_empty(&p->revalidate_set)) {
887 struct revalidate_cbdata cbdata;
889 cbdata.revalidate_all = revalidate_all;
890 cbdata.revalidate_subrules = p->need_revalidate;
891 cbdata.revalidate_set = p->revalidate_set;
892 tag_set_init(&p->revalidate_set);
893 COVERAGE_INC(ofproto_revalidate);
894 classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
895 p->need_revalidate = false;
902 ofproto_wait(struct ofproto *p)
904 struct ofconn *ofconn;
907 dpif_recv_wait(p->dpif);
908 dpif_port_poll_wait(p->dpif);
909 netdev_monitor_poll_wait(p->netdev_monitor);
910 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
914 in_band_wait(p->in_band);
917 discovery_wait(p->discovery);
920 fail_open_wait(p->fail_open);
922 pinsched_wait(p->miss_sched);
923 pinsched_wait(p->action_sched);
925 executer_wait(p->executer);
927 if (!tag_set_is_empty(&p->revalidate_set)) {
928 poll_immediate_wake();
930 if (p->need_revalidate) {
931 /* Shouldn't happen, but if it does just go around again. */
932 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
933 poll_immediate_wake();
934 } else if (p->next_expiration != LLONG_MAX) {
935 poll_timer_wait(p->next_expiration - time_msec());
937 for (i = 0; i < p->n_listeners; i++) {
938 pvconn_wait(p->listeners[i]);
940 for (i = 0; i < p->n_snoops; i++) {
941 pvconn_wait(p->snoops[i]);
946 ofproto_revalidate(struct ofproto *ofproto, tag_type tag)
948 tag_set_add(&ofproto->revalidate_set, tag);
952 ofproto_get_revalidate_set(struct ofproto *ofproto)
954 return &ofproto->revalidate_set;
958 ofproto_is_alive(const struct ofproto *p)
960 return p->discovery || rconn_is_alive(p->controller->rconn);
964 ofproto_send_packet(struct ofproto *p, const flow_t *flow,
965 const union ofp_action *actions, size_t n_actions,
966 const struct ofpbuf *packet)
968 struct odp_actions odp_actions;
971 error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions,
977 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
979 dpif_execute(p->dpif, flow->in_port, odp_actions.actions,
980 odp_actions.n_actions, packet);
985 ofproto_add_flow(struct ofproto *p,
986 const flow_t *flow, uint32_t wildcards, unsigned int priority,
987 const union ofp_action *actions, size_t n_actions,
991 rule = rule_create(NULL, actions, n_actions,
992 idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, 0);
993 cls_rule_from_flow(&rule->cr, flow, wildcards, priority);
994 rule_insert(p, rule, NULL, 0);
998 ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow,
999 uint32_t wildcards, unsigned int priority)
1003 rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
1007 rule_remove(ofproto, rule);
1012 destroy_rule(struct cls_rule *rule_, void *ofproto_)
1014 struct rule *rule = rule_from_cls_rule(rule_);
1015 struct ofproto *ofproto = ofproto_;
1017 /* Mark the flow as not installed, even though it might really be
1018 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1019 * There is no point in uninstalling it individually since we are about to
1020 * blow away all the flows with dpif_flow_flush(). */
1021 rule->installed = false;
1023 rule_remove(ofproto, rule);
1027 ofproto_flush_flows(struct ofproto *ofproto)
1029 COVERAGE_INC(ofproto_flush);
1030 classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto);
1031 dpif_flow_flush(ofproto->dpif);
1032 if (ofproto->in_band) {
1033 in_band_flushed(ofproto->in_band);
1035 if (ofproto->fail_open) {
1036 fail_open_flushed(ofproto->fail_open);
1041 reinit_ports(struct ofproto *p)
1043 struct svec devnames;
1044 struct ofport *ofport;
1045 unsigned int port_no;
1046 struct odp_port *odp_ports;
1050 svec_init(&devnames);
1051 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
1052 svec_add (&devnames, (char *) ofport->opp.name);
1054 dpif_port_list(p->dpif, &odp_ports, &n_odp_ports);
1055 for (i = 0; i < n_odp_ports; i++) {
1056 svec_add (&devnames, odp_ports[i].devname);
1060 svec_sort_unique(&devnames);
1061 for (i = 0; i < devnames.n; i++) {
1062 update_port(p, devnames.names[i]);
1064 svec_destroy(&devnames);
1068 refresh_port_group(struct ofproto *p, unsigned int group)
1072 struct ofport *port;
1073 unsigned int port_no;
1075 assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD);
1077 ports = xmalloc(port_array_count(&p->ports) * sizeof *ports);
1079 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1080 if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) {
1081 ports[n_ports++] = port_no;
1084 dpif_port_group_set(p->dpif, group, ports, n_ports);
1089 refresh_port_groups(struct ofproto *p)
1091 refresh_port_group(p, DP_GROUP_FLOOD);
1092 refresh_port_group(p, DP_GROUP_ALL);
1095 static struct ofport *
1096 make_ofport(const struct odp_port *odp_port)
1098 enum netdev_flags flags;
1099 struct ofport *ofport;
1100 struct netdev *netdev;
1104 error = netdev_open(odp_port->devname, NETDEV_ETH_TYPE_NONE, &netdev);
1106 VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
1107 "cannot be opened (%s)",
1108 odp_port->devname, odp_port->port,
1109 odp_port->devname, strerror(error));
1113 ofport = xmalloc(sizeof *ofport);
1114 ofport->netdev = netdev;
1115 ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port);
1116 netdev_get_etheraddr(netdev, ofport->opp.hw_addr);
1117 memcpy(ofport->opp.name, odp_port->devname,
1118 MIN(sizeof ofport->opp.name, sizeof odp_port->devname));
1119 ofport->opp.name[sizeof ofport->opp.name - 1] = '\0';
1121 netdev_get_flags(netdev, &flags);
1122 ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN;
1124 netdev_get_carrier(netdev, &carrier);
1125 ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN;
1127 netdev_get_features(netdev,
1128 &ofport->opp.curr, &ofport->opp.advertised,
1129 &ofport->opp.supported, &ofport->opp.peer);
1134 ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port)
1136 if (port_array_get(&p->ports, odp_port->port)) {
1137 VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
1140 } else if (shash_find(&p->port_by_name, odp_port->devname)) {
1141 VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
1150 ofport_equal(const struct ofport *a_, const struct ofport *b_)
1152 const struct ofp_phy_port *a = &a_->opp;
1153 const struct ofp_phy_port *b = &b_->opp;
1155 BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
1156 return (a->port_no == b->port_no
1157 && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
1158 && !strcmp((char *) a->name, (char *) b->name)
1159 && a->state == b->state
1160 && a->config == b->config
1161 && a->curr == b->curr
1162 && a->advertised == b->advertised
1163 && a->supported == b->supported
1164 && a->peer == b->peer);
1168 send_port_status(struct ofproto *p, const struct ofport *ofport,
1171 /* XXX Should limit the number of queued port status change messages. */
1172 struct ofconn *ofconn;
1173 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
1174 struct ofp_port_status *ops;
1177 ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
1178 ops->reason = reason;
1179 ops->desc = ofport->opp;
1180 hton_ofp_phy_port(&ops->desc);
1181 queue_tx(b, ofconn, NULL);
1183 if (p->ofhooks->port_changed_cb) {
1184 p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux);
1189 ofport_install(struct ofproto *p, struct ofport *ofport)
1191 netdev_monitor_add(p->netdev_monitor, ofport->netdev);
1192 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no),
1194 shash_add(&p->port_by_name, (char *) ofport->opp.name, ofport);
1198 ofport_remove(struct ofproto *p, struct ofport *ofport)
1200 netdev_monitor_remove(p->netdev_monitor, ofport->netdev);
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);
1358 handle_openflow(ofconn, p, of_msg);
1359 ofpbuf_delete(of_msg);
1363 if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
1364 ofconn_destroy(ofconn, p);
1369 ofconn_wait(struct ofconn *ofconn)
1371 rconn_run_wait(ofconn->rconn);
1372 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1373 rconn_recv_wait(ofconn->rconn);
1375 COVERAGE_INC(ofproto_ofconn_stuck);
1379 /* Caller is responsible for initializing the 'cr' member of the returned
1381 static struct rule *
1382 rule_create(struct rule *super,
1383 const union ofp_action *actions, size_t n_actions,
1384 uint16_t idle_timeout, uint16_t hard_timeout)
1386 struct rule *rule = xcalloc(1, sizeof *rule);
1387 rule->idle_timeout = idle_timeout;
1388 rule->hard_timeout = hard_timeout;
1389 rule->used = rule->created = time_msec();
1390 rule->super = super;
1392 list_push_back(&super->list, &rule->list);
1394 list_init(&rule->list);
1396 rule->n_actions = n_actions;
1397 rule->actions = xmemdup(actions, n_actions * sizeof *actions);
1401 static struct rule *
1402 rule_from_cls_rule(const struct cls_rule *cls_rule)
1404 return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
1408 rule_free(struct rule *rule)
1410 free(rule->actions);
1411 free(rule->odp_actions);
1415 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1416 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1417 * through all of its subrules and revalidates them, destroying any that no
1418 * longer has a super-rule (which is probably all of them).
1420 * Before calling this function, the caller must make have removed 'rule' from
1421 * the classifier. If 'rule' is an exact-match rule, the caller is also
1422 * responsible for ensuring that it has been uninstalled from the datapath. */
1424 rule_destroy(struct ofproto *ofproto, struct rule *rule)
1427 struct rule *subrule, *next;
1428 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
1429 revalidate_rule(ofproto, subrule);
1432 list_remove(&rule->list);
1438 rule_has_out_port(const struct rule *rule, uint16_t out_port)
1440 const union ofp_action *oa;
1441 struct actions_iterator i;
1443 if (out_port == htons(OFPP_NONE)) {
1446 for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
1447 oa = actions_next(&i)) {
1448 if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
1455 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1456 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1458 * The flow that 'packet' actually contains does not need to actually match
1459 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1460 * the packet and byte counters for 'rule' will be credited for the packet sent
1461 * out whether or not the packet actually matches 'rule'.
1463 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1464 * the caller must already have accurately composed ODP actions for it given
1465 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1466 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1467 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1468 * actions and apply them to 'packet'. */
1470 rule_execute(struct ofproto *ofproto, struct rule *rule,
1471 struct ofpbuf *packet, const flow_t *flow)
1473 const union odp_action *actions;
1475 struct odp_actions a;
1477 /* Grab or compose the ODP actions.
1479 * The special case for an exact-match 'rule' where 'flow' is not the
1480 * rule's flow is important to avoid, e.g., sending a packet out its input
1481 * port simply because the ODP actions were composed for the wrong
1483 if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) {
1484 struct rule *super = rule->super ? rule->super : rule;
1485 if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
1486 packet, &a, NULL, 0)) {
1489 actions = a.actions;
1490 n_actions = a.n_actions;
1492 actions = rule->odp_actions;
1493 n_actions = rule->n_odp_actions;
1496 /* Execute the ODP actions. */
1497 if (!dpif_execute(ofproto->dpif, flow->in_port,
1498 actions, n_actions, packet)) {
1499 struct odp_flow_stats stats;
1500 flow_extract_stats(flow, packet, &stats);
1501 update_stats(rule, &stats);
1502 rule->used = time_msec();
1507 rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
1510 struct rule *displaced_rule;
1512 /* Insert the rule in the classifier. */
1513 displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
1514 if (!rule->cr.wc.wildcards) {
1515 rule_make_actions(p, rule, packet);
1518 /* Send the packet and credit it to the rule. */
1521 flow_extract(packet, in_port, &flow);
1522 rule_execute(p, rule, packet, &flow);
1525 /* Install the rule in the datapath only after sending the packet, to
1526 * avoid packet reordering. */
1527 if (rule->cr.wc.wildcards) {
1528 COVERAGE_INC(ofproto_add_wc_flow);
1529 p->need_revalidate = true;
1531 rule_install(p, rule, displaced_rule);
1534 /* Free the rule that was displaced, if any. */
1535 if (displaced_rule) {
1536 rule_destroy(p, displaced_rule);
1540 static struct rule *
1541 rule_create_subrule(struct ofproto *ofproto, struct rule *rule,
1544 struct rule *subrule = rule_create(rule, NULL, 0,
1545 rule->idle_timeout, rule->hard_timeout);
1546 COVERAGE_INC(ofproto_subrule_create);
1547 cls_rule_from_flow(&subrule->cr, flow, 0,
1548 (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
1549 : rule->cr.priority));
1550 classifier_insert_exact(&ofproto->cls, &subrule->cr);
1556 rule_remove(struct ofproto *ofproto, struct rule *rule)
1558 if (rule->cr.wc.wildcards) {
1559 COVERAGE_INC(ofproto_del_wc_flow);
1560 ofproto->need_revalidate = true;
1562 rule_uninstall(ofproto, rule);
1564 classifier_remove(&ofproto->cls, &rule->cr);
1565 rule_destroy(ofproto, rule);
1568 /* Returns true if the actions changed, false otherwise. */
1570 rule_make_actions(struct ofproto *p, struct rule *rule,
1571 const struct ofpbuf *packet)
1573 const struct rule *super;
1574 struct odp_actions a;
1577 assert(!rule->cr.wc.wildcards);
1579 super = rule->super ? rule->super : rule;
1581 xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p,
1582 packet, &a, &rule->tags, &rule->may_install);
1584 actions_len = a.n_actions * sizeof *a.actions;
1585 if (rule->n_odp_actions != a.n_actions
1586 || memcmp(rule->odp_actions, a.actions, actions_len)) {
1587 COVERAGE_INC(ofproto_odp_unchanged);
1588 free(rule->odp_actions);
1589 rule->n_odp_actions = a.n_actions;
1590 rule->odp_actions = xmemdup(a.actions, actions_len);
1598 do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags,
1599 struct odp_flow_put *put)
1601 memset(&put->flow.stats, 0, sizeof put->flow.stats);
1602 put->flow.key = rule->cr.flow;
1603 put->flow.actions = rule->odp_actions;
1604 put->flow.n_actions = rule->n_odp_actions;
1606 return dpif_flow_put(ofproto->dpif, put);
1610 rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule)
1612 assert(!rule->cr.wc.wildcards);
1614 if (rule->may_install) {
1615 struct odp_flow_put put;
1616 if (!do_put_flow(p, rule,
1617 ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS,
1619 rule->installed = true;
1620 if (displaced_rule) {
1621 update_stats(rule, &put.flow.stats);
1622 rule_post_uninstall(p, displaced_rule);
1625 } else if (displaced_rule) {
1626 rule_uninstall(p, displaced_rule);
1631 rule_reinstall(struct ofproto *ofproto, struct rule *rule)
1633 if (rule->installed) {
1634 struct odp_flow_put put;
1635 COVERAGE_INC(ofproto_dp_missed);
1636 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1638 rule_install(ofproto, rule, NULL);
1643 rule_update_actions(struct ofproto *ofproto, struct rule *rule)
1645 bool actions_changed = rule_make_actions(ofproto, rule, NULL);
1646 if (rule->may_install) {
1647 if (rule->installed) {
1648 if (actions_changed) {
1649 /* XXX should really do rule_post_uninstall() for the *old* set
1650 * of actions, and distinguish the old stats from the new. */
1651 struct odp_flow_put put;
1652 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1655 rule_install(ofproto, rule, NULL);
1658 rule_uninstall(ofproto, rule);
1663 rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes)
1665 uint64_t total_bytes = rule->byte_count + extra_bytes;
1667 if (ofproto->ofhooks->account_flow_cb
1668 && total_bytes > rule->accounted_bytes)
1670 ofproto->ofhooks->account_flow_cb(
1671 &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
1672 total_bytes - rule->accounted_bytes, ofproto->aux);
1673 rule->accounted_bytes = total_bytes;
1678 rule_uninstall(struct ofproto *p, struct rule *rule)
1680 assert(!rule->cr.wc.wildcards);
1681 if (rule->installed) {
1682 struct odp_flow odp_flow;
1684 odp_flow.key = rule->cr.flow;
1685 odp_flow.actions = NULL;
1686 odp_flow.n_actions = 0;
1687 if (!dpif_flow_del(p->dpif, &odp_flow)) {
1688 update_stats(rule, &odp_flow.stats);
1690 rule->installed = false;
1692 rule_post_uninstall(p, rule);
1697 rule_post_uninstall(struct ofproto *ofproto, struct rule *rule)
1699 struct rule *super = rule->super;
1701 rule_account(ofproto, rule, 0);
1702 if (ofproto->netflow && rule->byte_count) {
1703 struct ofexpired expired;
1704 expired.flow = rule->cr.flow;
1705 expired.packet_count = rule->packet_count;
1706 expired.byte_count = rule->byte_count;
1707 expired.used = rule->used;
1708 expired.created = rule->created;
1709 expired.tcp_flags = rule->tcp_flags;
1710 expired.ip_tos = rule->ip_tos;
1711 netflow_expire(ofproto->netflow, &expired);
1714 super->packet_count += rule->packet_count;
1715 super->byte_count += rule->byte_count;
1716 super->tcp_flags |= rule->tcp_flags;
1717 if (rule->packet_count) {
1718 super->ip_tos = rule->ip_tos;
1722 /* Reset counters to prevent double counting if the rule ever gets
1724 rule->packet_count = 0;
1725 rule->byte_count = 0;
1726 rule->accounted_bytes = 0;
1727 rule->tcp_flags = 0;
1732 queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
1733 struct rconn_packet_counter *counter)
1735 update_openflow_length(msg);
1736 if (rconn_send(ofconn->rconn, msg, counter)) {
1742 send_error(const struct ofconn *ofconn, const struct ofp_header *oh,
1743 int error, const void *data, size_t len)
1746 struct ofp_error_msg *oem;
1748 if (!(error >> 16)) {
1749 VLOG_WARN_RL(&rl, "not sending bad error code %d to controller",
1754 COVERAGE_INC(ofproto_error);
1755 oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR,
1756 oh ? oh->xid : 0, &buf);
1757 oem->type = htons((unsigned int) error >> 16);
1758 oem->code = htons(error & 0xffff);
1759 memcpy(oem->data, data, len);
1760 queue_tx(buf, ofconn, ofconn->reply_counter);
1764 send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
1767 size_t oh_length = ntohs(oh->length);
1768 send_error(ofconn, oh, error, oh, MIN(oh_length, 64));
1772 hton_ofp_phy_port(struct ofp_phy_port *opp)
1774 opp->port_no = htons(opp->port_no);
1775 opp->config = htonl(opp->config);
1776 opp->state = htonl(opp->state);
1777 opp->curr = htonl(opp->curr);
1778 opp->advertised = htonl(opp->advertised);
1779 opp->supported = htonl(opp->supported);
1780 opp->peer = htonl(opp->peer);
1784 handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh)
1786 struct ofp_header *rq = oh;
1787 queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter);
1792 handle_features_request(struct ofproto *p, struct ofconn *ofconn,
1793 struct ofp_header *oh)
1795 struct ofp_switch_features *osf;
1797 unsigned int port_no;
1798 struct ofport *port;
1800 osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
1801 osf->datapath_id = htonll(p->datapath_id);
1802 osf->n_buffers = htonl(pktbuf_capacity());
1804 osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
1805 OFPC_PORT_STATS | OFPC_MULTI_PHY_TX);
1806 osf->actions = htonl((1u << OFPAT_OUTPUT) |
1807 (1u << OFPAT_SET_VLAN_VID) |
1808 (1u << OFPAT_SET_VLAN_PCP) |
1809 (1u << OFPAT_STRIP_VLAN) |
1810 (1u << OFPAT_SET_DL_SRC) |
1811 (1u << OFPAT_SET_DL_DST) |
1812 (1u << OFPAT_SET_NW_SRC) |
1813 (1u << OFPAT_SET_NW_DST) |
1814 (1u << OFPAT_SET_TP_SRC) |
1815 (1u << OFPAT_SET_TP_DST));
1817 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1818 hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
1821 queue_tx(buf, ofconn, ofconn->reply_counter);
1826 handle_get_config_request(struct ofproto *p, struct ofconn *ofconn,
1827 struct ofp_header *oh)
1830 struct ofp_switch_config *osc;
1834 /* Figure out flags. */
1835 dpif_get_drop_frags(p->dpif, &drop_frags);
1836 flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
1837 if (ofconn->send_flow_exp) {
1838 flags |= OFPC_SEND_FLOW_EXP;
1842 osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
1843 osc->flags = htons(flags);
1844 osc->miss_send_len = htons(ofconn->miss_send_len);
1845 queue_tx(buf, ofconn, ofconn->reply_counter);
1851 handle_set_config(struct ofproto *p, struct ofconn *ofconn,
1852 struct ofp_switch_config *osc)
1857 error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc);
1861 flags = ntohs(osc->flags);
1863 ofconn->send_flow_exp = (flags & OFPC_SEND_FLOW_EXP) != 0;
1865 if (ofconn == p->controller) {
1866 switch (flags & OFPC_FRAG_MASK) {
1867 case OFPC_FRAG_NORMAL:
1868 dpif_set_drop_frags(p->dpif, false);
1870 case OFPC_FRAG_DROP:
1871 dpif_set_drop_frags(p->dpif, true);
1874 VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
1880 if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) {
1881 if (ntohs(osc->miss_send_len) != 0) {
1882 ofconn->pktbuf = pktbuf_create();
1884 pktbuf_destroy(ofconn->pktbuf);
1888 ofconn->miss_send_len = ntohs(osc->miss_send_len);
1894 add_output_group_action(struct odp_actions *actions, uint16_t group)
1896 odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group;
1900 add_controller_action(struct odp_actions *actions,
1901 const struct ofp_action_output *oao)
1903 union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
1904 a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
1907 struct action_xlate_ctx {
1909 const flow_t *flow; /* Flow to which these actions correspond. */
1910 int recurse; /* Recursion level, via xlate_table_action. */
1911 struct ofproto *ofproto;
1912 const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
1913 * null pointer if we are revalidating
1914 * without a packet to refer to. */
1917 struct odp_actions *out; /* Datapath actions. */
1918 tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
1919 bool may_setup_flow; /* True ordinarily; false if the actions must
1920 * be reassessed for every packet. */
1923 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
1924 struct action_xlate_ctx *ctx);
1927 add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
1929 const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port);
1930 if (!ofport || !(ofport->opp.config & OFPPC_NO_FWD)) {
1931 odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port;
1935 static struct rule *
1936 lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow)
1939 rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
1941 /* The rule we found might not be valid, since we could be in need of
1942 * revalidation. If it is not valid, don't return it. */
1945 && ofproto->need_revalidate
1946 && !revalidate_rule(ofproto, rule)) {
1947 COVERAGE_INC(ofproto_invalidated);
1955 xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
1957 if (!ctx->recurse) {
1962 flow.in_port = in_port;
1964 rule = lookup_valid_rule(ctx->ofproto, &flow);
1971 do_xlate_actions(rule->actions, rule->n_actions, ctx);
1978 xlate_output_action(struct action_xlate_ctx *ctx,
1979 const struct ofp_action_output *oao)
1983 switch (ntohs(oao->port)) {
1985 add_output_action(ctx, ctx->flow->in_port);
1988 xlate_table_action(ctx, ctx->flow->in_port);
1991 if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
1992 ctx->out, ctx->tags,
1993 ctx->ofproto->aux)) {
1994 COVERAGE_INC(ofproto_uninstallable);
1995 ctx->may_setup_flow = false;
1999 add_output_group_action(ctx->out, DP_GROUP_FLOOD);
2002 add_output_group_action(ctx->out, DP_GROUP_ALL);
2004 case OFPP_CONTROLLER:
2005 add_controller_action(ctx->out, oao);
2008 add_output_action(ctx, ODPP_LOCAL);
2011 odp_port = ofp_port_to_odp_port(ntohs(oao->port));
2012 if (odp_port != ctx->flow->in_port) {
2013 add_output_action(ctx, odp_port);
2020 xlate_nicira_action(struct action_xlate_ctx *ctx,
2021 const struct nx_action_header *nah)
2023 const struct nx_action_resubmit *nar;
2024 int subtype = ntohs(nah->subtype);
2026 assert(nah->vendor == htonl(NX_VENDOR_ID));
2028 case NXAST_RESUBMIT:
2029 nar = (const struct nx_action_resubmit *) nah;
2030 xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
2034 VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
2040 do_xlate_actions(const union ofp_action *in, size_t n_in,
2041 struct action_xlate_ctx *ctx)
2043 struct actions_iterator iter;
2044 const union ofp_action *ia;
2045 const struct ofport *port;
2047 port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_port);
2048 if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
2049 port->opp.config & (eth_addr_equals(ctx->flow->dl_dst, stp_eth_addr)
2050 ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
2051 /* Drop this flow. */
2055 for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
2056 uint16_t type = ntohs(ia->type);
2057 union odp_action *oa;
2061 xlate_output_action(ctx, &ia->output);
2064 case OFPAT_SET_VLAN_VID:
2065 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID);
2066 oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid;
2069 case OFPAT_SET_VLAN_PCP:
2070 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP);
2071 oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp;
2074 case OFPAT_STRIP_VLAN:
2075 odp_actions_add(ctx->out, ODPAT_STRIP_VLAN);
2078 case OFPAT_SET_DL_SRC:
2079 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC);
2080 memcpy(oa->dl_addr.dl_addr,
2081 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2084 case OFPAT_SET_DL_DST:
2085 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST);
2086 memcpy(oa->dl_addr.dl_addr,
2087 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2090 case OFPAT_SET_NW_SRC:
2091 oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC);
2092 oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
2095 case OFPAT_SET_TP_SRC:
2096 oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC);
2097 oa->tp_port.tp_port = ia->tp_port.tp_port;
2101 xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
2105 VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
2112 xlate_actions(const union ofp_action *in, size_t n_in,
2113 const flow_t *flow, struct ofproto *ofproto,
2114 const struct ofpbuf *packet,
2115 struct odp_actions *out, tag_type *tags, bool *may_setup_flow)
2117 tag_type no_tags = 0;
2118 struct action_xlate_ctx ctx;
2119 COVERAGE_INC(ofproto_ofp2odp);
2120 odp_actions_init(out);
2123 ctx.ofproto = ofproto;
2124 ctx.packet = packet;
2126 ctx.tags = tags ? tags : &no_tags;
2127 ctx.may_setup_flow = true;
2128 do_xlate_actions(in, n_in, &ctx);
2130 /* Check with in-band control to see if we're allowed to setup this
2132 if (!in_band_rule_check(ofproto->in_band, flow, out)) {
2133 ctx.may_setup_flow = false;
2136 if (may_setup_flow) {
2137 *may_setup_flow = ctx.may_setup_flow;
2139 if (odp_actions_overflow(out)) {
2140 odp_actions_init(out);
2141 return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
2147 handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
2148 struct ofp_header *oh)
2150 struct ofp_packet_out *opo;
2151 struct ofpbuf payload, *buffer;
2152 struct odp_actions actions;
2158 error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
2162 opo = (struct ofp_packet_out *) oh;
2164 COVERAGE_INC(ofproto_packet_out);
2165 if (opo->buffer_id != htonl(UINT32_MAX)) {
2166 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id),
2176 flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
2177 error = xlate_actions((const union ofp_action *) opo->actions, n_actions,
2178 &flow, p, &payload, &actions, NULL, NULL);
2183 dpif_execute(p->dpif, flow.in_port, actions.actions, actions.n_actions,
2185 ofpbuf_delete(buffer);
2191 update_port_config(struct ofproto *p, struct ofport *port,
2192 uint32_t config, uint32_t mask)
2194 mask &= config ^ port->opp.config;
2195 if (mask & OFPPC_PORT_DOWN) {
2196 if (config & OFPPC_PORT_DOWN) {
2197 netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
2199 netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
2202 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2203 if (mask & REVALIDATE_BITS) {
2204 COVERAGE_INC(ofproto_costly_flags);
2205 port->opp.config ^= mask & REVALIDATE_BITS;
2206 p->need_revalidate = true;
2208 #undef REVALIDATE_BITS
2209 if (mask & OFPPC_NO_FLOOD) {
2210 port->opp.config ^= OFPPC_NO_FLOOD;
2211 refresh_port_group(p, DP_GROUP_FLOOD);
2213 if (mask & OFPPC_NO_PACKET_IN) {
2214 port->opp.config ^= OFPPC_NO_PACKET_IN;
2219 handle_port_mod(struct ofproto *p, struct ofp_header *oh)
2221 const struct ofp_port_mod *opm;
2222 struct ofport *port;
2225 error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
2229 opm = (struct ofp_port_mod *) oh;
2231 port = port_array_get(&p->ports,
2232 ofp_port_to_odp_port(ntohs(opm->port_no)));
2234 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
2235 } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
2236 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
2238 update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask));
2239 if (opm->advertise) {
2240 netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
2246 static struct ofpbuf *
2247 make_stats_reply(uint32_t xid, uint16_t type, size_t body_len)
2249 struct ofp_stats_reply *osr;
2252 msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
2253 osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
2255 osr->flags = htons(0);
2259 static struct ofpbuf *
2260 start_stats_reply(const struct ofp_stats_request *request, size_t body_len)
2262 return make_stats_reply(request->header.xid, request->type, body_len);
2266 append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp)
2268 struct ofpbuf *msg = *msgp;
2269 assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
2270 if (nbytes + msg->size > UINT16_MAX) {
2271 struct ofp_stats_reply *reply = msg->data;
2272 reply->flags = htons(OFPSF_REPLY_MORE);
2273 *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes);
2274 queue_tx(msg, ofconn, ofconn->reply_counter);
2276 return ofpbuf_put_uninit(*msgp, nbytes);
2280 handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn,
2281 struct ofp_stats_request *request)
2283 struct ofp_desc_stats *ods;
2286 msg = start_stats_reply(request, sizeof *ods);
2287 ods = append_stats_reply(sizeof *ods, ofconn, &msg);
2288 strncpy(ods->mfr_desc, p->manufacturer, sizeof ods->mfr_desc);
2289 strncpy(ods->hw_desc, p->hardware, sizeof ods->hw_desc);
2290 strncpy(ods->sw_desc, p->software, sizeof ods->sw_desc);
2291 strncpy(ods->serial_num, p->serial, sizeof ods->serial_num);
2292 queue_tx(msg, ofconn, ofconn->reply_counter);
2298 count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
2300 struct rule *rule = rule_from_cls_rule(cls_rule);
2301 int *n_subrules = n_subrules_;
2309 handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn,
2310 struct ofp_stats_request *request)
2312 struct ofp_table_stats *ots;
2314 struct odp_stats dpstats;
2315 int n_exact, n_subrules, n_wild;
2317 msg = start_stats_reply(request, sizeof *ots * 2);
2319 /* Count rules of various kinds. */
2321 classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
2322 n_exact = classifier_count_exact(&p->cls) - n_subrules;
2323 n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
2326 dpif_get_dp_stats(p->dpif, &dpstats);
2327 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2328 memset(ots, 0, sizeof *ots);
2329 ots->table_id = TABLEID_HASH;
2330 strcpy(ots->name, "hash");
2331 ots->wildcards = htonl(0);
2332 ots->max_entries = htonl(dpstats.max_capacity);
2333 ots->active_count = htonl(n_exact);
2334 ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit +
2336 ots->matched_count = htonll(dpstats.n_hit); /* XXX */
2338 /* Classifier table. */
2339 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2340 memset(ots, 0, sizeof *ots);
2341 ots->table_id = TABLEID_CLASSIFIER;
2342 strcpy(ots->name, "classifier");
2343 ots->wildcards = htonl(OFPFW_ALL);
2344 ots->max_entries = htonl(65536);
2345 ots->active_count = htonl(n_wild);
2346 ots->lookup_count = htonll(0); /* XXX */
2347 ots->matched_count = htonll(0); /* XXX */
2349 queue_tx(msg, ofconn, ofconn->reply_counter);
2354 handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn,
2355 struct ofp_stats_request *request)
2357 struct ofp_port_stats *ops;
2359 struct ofport *port;
2360 unsigned int port_no;
2362 msg = start_stats_reply(request, sizeof *ops * 16);
2363 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
2364 struct netdev_stats stats;
2366 /* Intentionally ignore return value, since errors will set 'stats' to
2367 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2369 netdev_get_stats(port->netdev, &stats);
2371 ops = append_stats_reply(sizeof *ops, ofconn, &msg);
2372 ops->port_no = htons(odp_port_to_ofp_port(port_no));
2373 memset(ops->pad, 0, sizeof ops->pad);
2374 ops->rx_packets = htonll(stats.rx_packets);
2375 ops->tx_packets = htonll(stats.tx_packets);
2376 ops->rx_bytes = htonll(stats.rx_bytes);
2377 ops->tx_bytes = htonll(stats.tx_bytes);
2378 ops->rx_dropped = htonll(stats.rx_dropped);
2379 ops->tx_dropped = htonll(stats.tx_dropped);
2380 ops->rx_errors = htonll(stats.rx_errors);
2381 ops->tx_errors = htonll(stats.tx_errors);
2382 ops->rx_frame_err = htonll(stats.rx_frame_errors);
2383 ops->rx_over_err = htonll(stats.rx_over_errors);
2384 ops->rx_crc_err = htonll(stats.rx_crc_errors);
2385 ops->collisions = htonll(stats.collisions);
2388 queue_tx(msg, ofconn, ofconn->reply_counter);
2392 struct flow_stats_cbdata {
2393 struct ofproto *ofproto;
2394 struct ofconn *ofconn;
2400 query_stats(struct ofproto *p, struct rule *rule,
2401 uint64_t *packet_countp, uint64_t *byte_countp)
2403 uint64_t packet_count, byte_count;
2404 struct rule *subrule;
2405 struct odp_flow *odp_flows;
2408 n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1;
2409 odp_flows = xcalloc(1, n_odp_flows * sizeof *odp_flows);
2410 if (rule->cr.wc.wildcards) {
2412 LIST_FOR_EACH (subrule, struct rule, list, &rule->list) {
2413 odp_flows[i++].key = subrule->cr.flow;
2416 odp_flows[0].key = rule->cr.flow;
2419 packet_count = rule->packet_count;
2420 byte_count = rule->byte_count;
2421 if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) {
2423 for (i = 0; i < n_odp_flows; i++) {
2424 struct odp_flow *odp_flow = &odp_flows[i];
2425 packet_count += odp_flow->stats.n_packets;
2426 byte_count += odp_flow->stats.n_bytes;
2431 *packet_countp = packet_count;
2432 *byte_countp = byte_count;
2436 flow_stats_cb(struct cls_rule *rule_, void *cbdata_)
2438 struct rule *rule = rule_from_cls_rule(rule_);
2439 struct flow_stats_cbdata *cbdata = cbdata_;
2440 struct ofp_flow_stats *ofs;
2441 uint64_t packet_count, byte_count;
2442 size_t act_len, len;
2444 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2448 act_len = sizeof *rule->actions * rule->n_actions;
2449 len = offsetof(struct ofp_flow_stats, actions) + act_len;
2451 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2453 ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg);
2454 ofs->length = htons(len);
2455 ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
2457 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofs->match);
2458 ofs->duration = htonl((time_msec() - rule->created) / 1000);
2459 ofs->priority = htons(rule->cr.priority);
2460 ofs->idle_timeout = htons(rule->idle_timeout);
2461 ofs->hard_timeout = htons(rule->hard_timeout);
2462 memset(ofs->pad2, 0, sizeof ofs->pad2);
2463 ofs->packet_count = htonll(packet_count);
2464 ofs->byte_count = htonll(byte_count);
2465 memcpy(ofs->actions, rule->actions, act_len);
2469 table_id_to_include(uint8_t table_id)
2471 return (table_id == TABLEID_HASH ? CLS_INC_EXACT
2472 : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD
2473 : table_id == 0xff ? CLS_INC_ALL
2478 handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn,
2479 const struct ofp_stats_request *osr,
2482 struct ofp_flow_stats_request *fsr;
2483 struct flow_stats_cbdata cbdata;
2484 struct cls_rule target;
2486 if (arg_size != sizeof *fsr) {
2487 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2489 fsr = (struct ofp_flow_stats_request *) osr->body;
2491 COVERAGE_INC(ofproto_flows_req);
2493 cbdata.ofconn = ofconn;
2494 cbdata.out_port = fsr->out_port;
2495 cbdata.msg = start_stats_reply(osr, 1024);
2496 cls_rule_from_match(&target, &fsr->match, 0);
2497 classifier_for_each_match(&p->cls, &target,
2498 table_id_to_include(fsr->table_id),
2499 flow_stats_cb, &cbdata);
2500 queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
2504 struct flow_stats_ds_cbdata {
2505 struct ofproto *ofproto;
2510 flow_stats_ds_cb(struct cls_rule *rule_, void *cbdata_)
2512 struct rule *rule = rule_from_cls_rule(rule_);
2513 struct flow_stats_ds_cbdata *cbdata = cbdata_;
2514 struct ds *results = cbdata->results;
2515 struct ofp_match match;
2516 uint64_t packet_count, byte_count;
2517 size_t act_len = sizeof *rule->actions * rule->n_actions;
2519 /* Don't report on subrules. */
2520 if (rule->super != NULL) {
2524 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2525 flow_to_ovs_match(&rule->cr.flow, rule->cr.wc.wildcards, &match);
2527 ds_put_format(results, "duration=%llds, ",
2528 (time_msec() - rule->created) / 1000);
2529 ds_put_format(results, "priority=%u, ", rule->cr.priority);
2530 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
2531 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
2532 ofp_print_match(results, &match, true);
2533 ofp_print_actions(results, &rule->actions->header, act_len);
2534 ds_put_cstr(results, "\n");
2537 /* Adds a pretty-printed description of all flows to 'results', including
2538 * those marked hidden by secchan (e.g., by in-band control). */
2540 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
2542 struct ofp_match match;
2543 struct cls_rule target;
2544 struct flow_stats_ds_cbdata cbdata;
2546 memset(&match, 0, sizeof match);
2547 match.wildcards = htonl(OFPFW_ALL);
2550 cbdata.results = results;
2552 cls_rule_from_match(&target, &match, 0);
2553 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2554 flow_stats_ds_cb, &cbdata);
2557 struct aggregate_stats_cbdata {
2558 struct ofproto *ofproto;
2560 uint64_t packet_count;
2561 uint64_t byte_count;
2566 aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_)
2568 struct rule *rule = rule_from_cls_rule(rule_);
2569 struct aggregate_stats_cbdata *cbdata = cbdata_;
2570 uint64_t packet_count, byte_count;
2572 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2576 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2578 cbdata->packet_count += packet_count;
2579 cbdata->byte_count += byte_count;
2584 handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn,
2585 const struct ofp_stats_request *osr,
2588 struct ofp_aggregate_stats_request *asr;
2589 struct ofp_aggregate_stats_reply *reply;
2590 struct aggregate_stats_cbdata cbdata;
2591 struct cls_rule target;
2594 if (arg_size != sizeof *asr) {
2595 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2597 asr = (struct ofp_aggregate_stats_request *) osr->body;
2599 COVERAGE_INC(ofproto_agg_request);
2601 cbdata.out_port = asr->out_port;
2602 cbdata.packet_count = 0;
2603 cbdata.byte_count = 0;
2605 cls_rule_from_match(&target, &asr->match, 0);
2606 classifier_for_each_match(&p->cls, &target,
2607 table_id_to_include(asr->table_id),
2608 aggregate_stats_cb, &cbdata);
2610 msg = start_stats_reply(osr, sizeof *reply);
2611 reply = append_stats_reply(sizeof *reply, ofconn, &msg);
2612 reply->flow_count = htonl(cbdata.n_flows);
2613 reply->packet_count = htonll(cbdata.packet_count);
2614 reply->byte_count = htonll(cbdata.byte_count);
2615 queue_tx(msg, ofconn, ofconn->reply_counter);
2620 handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
2621 struct ofp_header *oh)
2623 struct ofp_stats_request *osr;
2627 error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr,
2632 osr = (struct ofp_stats_request *) oh;
2634 switch (ntohs(osr->type)) {
2636 return handle_desc_stats_request(p, ofconn, osr);
2639 return handle_flow_stats_request(p, ofconn, osr, arg_size);
2641 case OFPST_AGGREGATE:
2642 return handle_aggregate_stats_request(p, ofconn, osr, arg_size);
2645 return handle_table_stats_request(p, ofconn, osr);
2648 return handle_port_stats_request(p, ofconn, osr);
2651 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2654 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
2658 static long long int
2659 msec_from_nsec(uint64_t sec, uint32_t nsec)
2661 return !sec ? 0 : sec * 1000 + nsec / 1000000;
2665 update_time(struct rule *rule, const struct odp_flow_stats *stats)
2667 long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec);
2668 if (used > rule->used) {
2674 update_stats(struct rule *rule, const struct odp_flow_stats *stats)
2676 update_time(rule, stats);
2677 rule->packet_count += stats->n_packets;
2678 rule->byte_count += stats->n_bytes;
2679 rule->tcp_flags |= stats->tcp_flags;
2680 if (stats->n_packets) {
2681 rule->ip_tos = stats->ip_tos;
2686 add_flow(struct ofproto *p, struct ofconn *ofconn,
2687 struct ofp_flow_mod *ofm, size_t n_actions)
2689 struct ofpbuf *packet;
2694 rule = rule_create(NULL, (const union ofp_action *) ofm->actions,
2695 n_actions, ntohs(ofm->idle_timeout),
2696 ntohs(ofm->hard_timeout));
2697 cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
2701 if (ofm->buffer_id != htonl(UINT32_MAX)) {
2702 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
2706 rule_insert(p, rule, packet, in_port);
2707 ofpbuf_delete(packet);
2712 modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
2713 size_t n_actions, uint16_t command, struct rule *rule)
2715 if (rule_is_hidden(rule)) {
2719 if (command == OFPFC_DELETE) {
2720 rule_remove(p, rule);
2722 size_t actions_len = n_actions * sizeof *rule->actions;
2724 if (n_actions == rule->n_actions
2725 && !memcmp(ofm->actions, rule->actions, actions_len))
2730 free(rule->actions);
2731 rule->actions = xmemdup(ofm->actions, actions_len);
2732 rule->n_actions = n_actions;
2734 if (rule->cr.wc.wildcards) {
2735 COVERAGE_INC(ofproto_mod_wc_flow);
2736 p->need_revalidate = true;
2738 rule_update_actions(p, rule);
2746 modify_flows_strict(struct ofproto *p, const struct ofp_flow_mod *ofm,
2747 size_t n_actions, uint16_t command)
2753 flow_from_match(&flow, &wildcards, &ofm->match);
2754 rule = rule_from_cls_rule(classifier_find_rule_exactly(
2755 &p->cls, &flow, wildcards,
2756 ntohs(ofm->priority)));
2759 if (command == OFPFC_DELETE
2760 && ofm->out_port != htons(OFPP_NONE)
2761 && !rule_has_out_port(rule, ofm->out_port)) {
2765 modify_flow(p, ofm, n_actions, command, rule);
2770 struct modify_flows_cbdata {
2771 struct ofproto *ofproto;
2772 const struct ofp_flow_mod *ofm;
2779 modify_flows_cb(struct cls_rule *rule_, void *cbdata_)
2781 struct rule *rule = rule_from_cls_rule(rule_);
2782 struct modify_flows_cbdata *cbdata = cbdata_;
2784 if (cbdata->out_port != htons(OFPP_NONE)
2785 && !rule_has_out_port(rule, cbdata->out_port)) {
2789 modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
2790 cbdata->command, rule);
2794 modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
2795 size_t n_actions, uint16_t command)
2797 struct modify_flows_cbdata cbdata;
2798 struct cls_rule target;
2802 cbdata.out_port = (command == OFPFC_DELETE ? ofm->out_port
2803 : htons(OFPP_NONE));
2804 cbdata.n_actions = n_actions;
2805 cbdata.command = command;
2807 cls_rule_from_match(&target, &ofm->match, 0);
2809 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2810 modify_flows_cb, &cbdata);
2815 handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
2816 struct ofp_flow_mod *ofm)
2821 error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
2822 sizeof *ofm->actions, &n_actions);
2827 normalize_match(&ofm->match);
2828 if (!ofm->match.wildcards) {
2829 ofm->priority = htons(UINT16_MAX);
2832 error = validate_actions((const union ofp_action *) ofm->actions,
2833 n_actions, p->max_ports);
2838 switch (ntohs(ofm->command)) {
2840 return add_flow(p, ofconn, ofm, n_actions);
2843 return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
2845 case OFPFC_MODIFY_STRICT:
2846 return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
2849 return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
2851 case OFPFC_DELETE_STRICT:
2852 return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
2855 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
2860 send_capability_reply(struct ofproto *p, struct ofconn *ofconn, uint32_t xid)
2862 struct ofmp_capability_reply *ocr;
2864 char capabilities[] = "com.nicira.mgmt.manager=false\n";
2866 ocr = make_openflow_xid(sizeof(*ocr), OFPT_VENDOR, xid, &b);
2867 ocr->header.header.vendor = htonl(NX_VENDOR_ID);
2868 ocr->header.header.subtype = htonl(NXT_MGMT);
2869 ocr->header.type = htons(OFMPT_CAPABILITY_REPLY);
2871 ocr->format = htonl(OFMPCOF_SIMPLE);
2872 ocr->mgmt_id = htonll(p->mgmt_id);
2874 ofpbuf_put(b, capabilities, strlen(capabilities));
2876 queue_tx(b, ofconn, ofconn->reply_counter);
2880 handle_ofmp(struct ofproto *p, struct ofconn *ofconn,
2881 struct ofmp_header *ofmph)
2883 size_t msg_len = ntohs(ofmph->header.header.length);
2884 if (msg_len < sizeof(*ofmph)) {
2885 VLOG_WARN_RL(&rl, "dropping short managment message: %d\n", msg_len);
2886 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2889 if (ofmph->type == htons(OFMPT_CAPABILITY_REQUEST)) {
2890 struct ofmp_capability_request *ofmpcr;
2892 if (msg_len < sizeof(struct ofmp_capability_request)) {
2893 VLOG_WARN_RL(&rl, "dropping short capability request: %d\n",
2895 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2898 ofmpcr = (struct ofmp_capability_request *)ofmph;
2899 if (ofmpcr->format != htonl(OFMPCAF_SIMPLE)) {
2900 /* xxx Find a better type than bad subtype */
2901 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2904 send_capability_reply(p, ofconn, ofmph->header.header.xid);
2907 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2912 handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
2914 struct ofp_vendor_header *ovh = msg;
2915 struct nicira_header *nh;
2917 if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
2918 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2920 if (ovh->vendor != htonl(NX_VENDOR_ID)) {
2921 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2923 if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
2924 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2928 switch (ntohl(nh->subtype)) {
2929 case NXT_STATUS_REQUEST:
2930 return switch_status_handle_request(p->switch_status, ofconn->rconn,
2933 case NXT_ACT_SET_CONFIG:
2934 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2936 case NXT_ACT_GET_CONFIG:
2937 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2939 case NXT_COMMAND_REQUEST:
2941 return executer_handle_request(p->executer, ofconn->rconn, msg);
2946 return handle_ofmp(p, ofconn, msg);
2949 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2953 handle_openflow(struct ofconn *ofconn, struct ofproto *p,
2954 struct ofpbuf *ofp_msg)
2956 struct ofp_header *oh = ofp_msg->data;
2959 COVERAGE_INC(ofproto_recv_openflow);
2961 case OFPT_ECHO_REQUEST:
2962 error = handle_echo_request(ofconn, oh);
2965 case OFPT_ECHO_REPLY:
2969 case OFPT_FEATURES_REQUEST:
2970 error = handle_features_request(p, ofconn, oh);
2973 case OFPT_GET_CONFIG_REQUEST:
2974 error = handle_get_config_request(p, ofconn, oh);
2977 case OFPT_SET_CONFIG:
2978 error = handle_set_config(p, ofconn, ofp_msg->data);
2981 case OFPT_PACKET_OUT:
2982 error = handle_packet_out(p, ofconn, ofp_msg->data);
2986 error = handle_port_mod(p, oh);
2990 error = handle_flow_mod(p, ofconn, ofp_msg->data);
2993 case OFPT_STATS_REQUEST:
2994 error = handle_stats_request(p, ofconn, oh);
2998 error = handle_vendor(p, ofconn, ofp_msg->data);
3002 if (VLOG_IS_WARN_ENABLED()) {
3003 char *s = ofp_to_string(oh, ntohs(oh->length), 2);
3004 VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
3007 error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
3012 send_error_oh(ofconn, ofp_msg->data, error);
3017 handle_odp_msg(struct ofproto *p, struct ofpbuf *packet)
3019 struct odp_msg *msg = packet->data;
3020 uint16_t in_port = odp_port_to_ofp_port(msg->port);
3022 struct ofpbuf payload;
3025 /* Handle controller actions. */
3026 if (msg->type == _ODPL_ACTION_NR) {
3027 COVERAGE_INC(ofproto_ctlr_action);
3028 pinsched_send(p->action_sched, in_port, packet,
3029 send_packet_in_action, p);
3033 payload.data = msg + 1;
3034 payload.size = msg->length - sizeof *msg;
3035 flow_extract(&payload, msg->port, &flow);
3037 /* Check with in-band control to see if this packet should be sent
3038 * to the local port regardless of the flow table. */
3039 if (in_band_msg_in_hook(p->in_band, &flow, &payload)) {
3040 union odp_action action;
3042 memset(&action, 0, sizeof(action));
3043 action.output.type = ODPAT_OUTPUT;
3044 action.output.port = ODPP_LOCAL;
3045 dpif_execute(p->dpif, flow.in_port, &action, 1, &payload);
3048 rule = lookup_valid_rule(p, &flow);
3050 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3051 struct ofport *port = port_array_get(&p->ports, msg->port);
3053 if (port->opp.config & OFPPC_NO_PACKET_IN) {
3054 COVERAGE_INC(ofproto_no_packet_in);
3055 /* XXX install 'drop' flow entry */
3056 ofpbuf_delete(packet);
3060 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port);
3063 COVERAGE_INC(ofproto_packet_in);
3064 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
3068 if (rule->cr.wc.wildcards) {
3069 rule = rule_create_subrule(p, rule, &flow);
3070 rule_make_actions(p, rule, packet);
3072 if (!rule->may_install) {
3073 /* The rule is not installable, that is, we need to process every
3074 * packet, so process the current packet and set its actions into
3076 rule_make_actions(p, rule, packet);
3078 /* XXX revalidate rule if it needs it */
3082 rule_execute(p, rule, &payload, &flow);
3083 rule_reinstall(p, rule);
3084 ofpbuf_delete(packet);
3088 revalidate_cb(struct cls_rule *sub_, void *cbdata_)
3090 struct rule *sub = rule_from_cls_rule(sub_);
3091 struct revalidate_cbdata *cbdata = cbdata_;
3093 if (cbdata->revalidate_all
3094 || (cbdata->revalidate_subrules && sub->super)
3095 || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) {
3096 revalidate_rule(cbdata->ofproto, sub);
3101 revalidate_rule(struct ofproto *p, struct rule *rule)
3103 const flow_t *flow = &rule->cr.flow;
3105 COVERAGE_INC(ofproto_revalidate_rule);
3108 super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow));
3110 rule_remove(p, rule);
3112 } else if (super != rule->super) {
3113 COVERAGE_INC(ofproto_revalidate_moved);
3114 list_remove(&rule->list);
3115 list_push_back(&super->list, &rule->list);
3116 rule->super = super;
3117 rule->hard_timeout = super->hard_timeout;
3118 rule->idle_timeout = super->idle_timeout;
3119 rule->created = super->created;
3124 rule_update_actions(p, rule);
3128 static struct ofpbuf *
3129 compose_flow_exp(const struct rule *rule, long long int now, uint8_t reason)
3131 struct ofp_flow_expired *ofe;
3134 ofe = make_openflow(sizeof *ofe, OFPT_FLOW_EXPIRED, &buf);
3135 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofe->match);
3136 ofe->priority = htons(rule->cr.priority);
3137 ofe->reason = reason;
3138 ofe->duration = (now - rule->created) / 1000;
3139 ofe->packet_count = rule->packet_count;
3140 ofe->byte_count = rule->byte_count;
3146 send_flow_exp(struct ofproto *p, struct rule *rule,
3147 long long int now, uint8_t reason)
3149 struct ofconn *ofconn;
3150 struct ofconn *prev;
3151 struct ofpbuf *buf = NULL;
3153 /* We limit the maximum number of queued flow expirations it by accounting
3154 * them under the counter for replies. That works because preventing
3155 * OpenFlow requests from being processed also prevents new flows from
3156 * being added (and expiring). (It also prevents processing OpenFlow
3157 * requests that would not add new flows, so it is imperfect.) */
3160 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3161 if (ofconn->send_flow_exp && rconn_is_connected(ofconn->rconn)) {
3163 queue_tx(ofpbuf_clone(buf), prev, ofconn->reply_counter);
3165 buf = compose_flow_exp(rule, now, reason);
3171 queue_tx(buf, prev, ofconn->reply_counter);
3176 uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule)
3178 assert(rule->installed);
3179 assert(!rule->cr.wc.wildcards);
3182 rule_remove(ofproto, rule);
3184 rule_uninstall(ofproto, rule);
3189 expire_rule(struct cls_rule *cls_rule, void *p_)
3191 struct ofproto *p = p_;
3192 struct rule *rule = rule_from_cls_rule(cls_rule);
3193 long long int hard_expire, idle_expire, expire, now;
3195 hard_expire = (rule->hard_timeout
3196 ? rule->created + rule->hard_timeout * 1000
3198 idle_expire = (rule->idle_timeout
3199 && (rule->super || list_is_empty(&rule->list))
3200 ? rule->used + rule->idle_timeout * 1000
3202 expire = MIN(hard_expire, idle_expire);
3203 if (expire == LLONG_MAX) {
3204 if (rule->installed && time_msec() >= rule->used + 5000) {
3205 uninstall_idle_flow(p, rule);
3212 if (rule->installed && now >= rule->used + 5000) {
3213 uninstall_idle_flow(p, rule);
3218 COVERAGE_INC(ofproto_expired);
3219 if (rule->cr.wc.wildcards) {
3220 /* Update stats. (This code will be a no-op if the rule expired
3221 * due to an idle timeout, because in that case the rule has no
3222 * subrules left.) */
3223 struct rule *subrule, *next;
3224 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
3225 rule_remove(p, subrule);
3229 send_flow_exp(p, rule, now,
3231 ? OFPER_HARD_TIMEOUT : OFPER_IDLE_TIMEOUT));
3232 rule_remove(p, rule);
3236 update_used(struct ofproto *p)
3238 struct odp_flow *flows;
3243 error = dpif_flow_list_all(p->dpif, &flows, &n_flows);
3248 for (i = 0; i < n_flows; i++) {
3249 struct odp_flow *f = &flows[i];
3252 rule = rule_from_cls_rule(
3253 classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX));
3254 if (!rule || !rule->installed) {
3255 COVERAGE_INC(ofproto_unexpected_rule);
3256 dpif_flow_del(p->dpif, f);
3260 update_time(rule, &f->stats);
3261 rule_account(p, rule, f->stats.n_bytes);
3267 do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
3268 const struct ofpbuf *packet, int send_len)
3270 struct ofp_packet_in *opi;
3271 struct ofpbuf payload, *buf;
3272 struct odp_msg *msg;
3275 payload.data = msg + 1;
3276 payload.size = msg->length - sizeof *msg;
3278 send_len = MIN(send_len, payload.size);
3279 buf = ofpbuf_new(sizeof *opi + send_len);
3280 opi = put_openflow_xid(offsetof(struct ofp_packet_in, data),
3281 OFPT_PACKET_IN, 0, buf);
3282 opi->buffer_id = htonl(buffer_id);
3283 opi->total_len = htons(payload.size);
3284 opi->in_port = htons(odp_port_to_ofp_port(msg->port));
3285 opi->reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
3286 ofpbuf_put(buf, payload.data, MIN(send_len, payload.size));
3287 update_openflow_length(buf);
3288 rconn_send_with_limit(ofconn->rconn, buf, ofconn->packet_in_counter, 100);
3292 send_packet_in_action(struct ofpbuf *packet, void *p_)
3294 struct ofproto *p = p_;
3295 struct ofconn *ofconn;
3296 struct odp_msg *msg;
3299 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3300 if (ofconn == p->controller || ofconn->miss_send_len) {
3301 do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg);
3304 ofpbuf_delete(packet);
3308 send_packet_in_miss(struct ofpbuf *packet, void *p_)
3310 struct ofproto *p = p_;
3311 struct ofconn *ofconn;
3312 struct ofpbuf payload;
3313 struct odp_msg *msg;
3316 payload.data = msg + 1;
3317 payload.size = msg->length - sizeof *msg;
3318 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3319 if (ofconn->miss_send_len) {
3320 uint32_t buffer_id = pktbuf_save(ofconn->pktbuf, &payload,
3322 int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len
3324 do_send_packet_in(ofconn, buffer_id, packet, send_len);
3327 ofpbuf_delete(packet);
3331 pick_datapath_id(const struct ofproto *ofproto)
3333 const struct ofport *port;
3335 port = port_array_get(&ofproto->ports, ODPP_LOCAL);
3337 uint8_t ea[ETH_ADDR_LEN];
3340 error = netdev_get_etheraddr(port->netdev, ea);
3342 return eth_addr_to_uint64(ea);
3344 VLOG_WARN("could not get MAC address for %s (%s)",
3345 netdev_get_name(port->netdev), strerror(error));
3347 return ofproto->fallback_dpid;
3351 pick_fallback_dpid(void)
3353 uint8_t ea[ETH_ADDR_LEN];
3354 eth_addr_random(ea);
3355 ea[0] = 0x00; /* Set Nicira OUI. */
3358 return eth_addr_to_uint64(ea);
3362 default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
3363 struct odp_actions *actions, tag_type *tags,
3366 struct ofproto *ofproto = ofproto_;
3369 /* Drop frames for reserved multicast addresses. */
3370 if (eth_addr_is_reserved(flow->dl_dst)) {
3374 /* Learn source MAC (but don't try to learn from revalidation). */
3375 if (packet != NULL) {
3376 tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src,
3379 /* The log messages here could actually be useful in debugging,
3380 * so keep the rate limit relatively high. */
3381 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
3382 VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
3383 ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
3384 ofproto_revalidate(ofproto, rev_tag);
3388 /* Determine output port. */
3389 out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
3391 add_output_group_action(actions, DP_GROUP_FLOOD);
3392 } else if (out_port != flow->in_port) {
3393 odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port;
3401 static const struct ofhooks default_ofhooks = {
3403 default_normal_ofhook_cb,