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, uint16_t *nf_output_iface);
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 tag_type tags; /* Tags (set only by hooks). */
98 struct netflow_flow nf_flow; /* Per-flow NetFlow tracking data. */
100 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
101 * exact-match rule (having cr.wc.wildcards of 0) generated from the
102 * wildcard rule 'super'. In this case, 'list' is an element of the
105 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
106 * a list of subrules. A super-rule with no wildcards (where
107 * cr.wc.wildcards is 0) will never have any subrules. */
113 * A subrule has no actions (it uses the super-rule's actions). */
115 union ofp_action *actions;
119 * A super-rule with wildcard fields never has ODP actions (since the
120 * datapath only supports exact-match flows). */
121 bool installed; /* Installed in datapath? */
122 bool may_install; /* True ordinarily; false if actions must
123 * be reassessed for every packet. */
125 union odp_action *odp_actions;
129 rule_is_hidden(const struct rule *rule)
131 /* Subrules are merely an implementation detail, so hide them from the
133 if (rule->super != NULL) {
137 /* Rules with priority higher than UINT16_MAX are set up by secchan itself
138 * (e.g. by in-band control) and are intentionally hidden from the
140 if (rule->cr.priority > UINT16_MAX) {
147 static struct rule *rule_create(struct ofproto *, struct rule *super,
148 const union ofp_action *, size_t n_actions,
149 uint16_t idle_timeout, uint16_t hard_timeout);
150 static void rule_free(struct rule *);
151 static void rule_destroy(struct ofproto *, struct rule *);
152 static struct rule *rule_from_cls_rule(const struct cls_rule *);
153 static void rule_insert(struct ofproto *, struct rule *,
154 struct ofpbuf *packet, uint16_t in_port);
155 static void rule_remove(struct ofproto *, struct rule *);
156 static bool rule_make_actions(struct ofproto *, struct rule *,
157 const struct ofpbuf *packet);
158 static void rule_install(struct ofproto *, struct rule *,
159 struct rule *displaced_rule);
160 static void rule_uninstall(struct ofproto *, struct rule *);
161 static void rule_post_uninstall(struct ofproto *, struct rule *);
166 struct pktbuf *pktbuf;
170 struct rconn_packet_counter *packet_in_counter;
172 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
173 * the maximum number before we stop reading OpenFlow requests. */
174 #define OFCONN_REPLY_MAX 100
175 struct rconn_packet_counter *reply_counter;
178 static struct ofconn *ofconn_create(struct ofproto *, struct rconn *);
179 static void ofconn_destroy(struct ofconn *, struct ofproto *);
180 static void ofconn_run(struct ofconn *, struct ofproto *);
181 static void ofconn_wait(struct ofconn *);
182 static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
183 struct rconn_packet_counter *counter);
187 uint64_t datapath_id; /* Datapath ID. */
188 uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
189 uint64_t mgmt_id; /* Management channel identifier. */
190 char *manufacturer; /* Manufacturer. */
191 char *hardware; /* Hardware. */
192 char *software; /* Software version. */
193 char *serial; /* Serial number. */
197 struct dpifmon *dpifmon;
198 struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is
200 struct shash port_by_name;
204 struct switch_status *switch_status;
205 struct status_category *ss_cat;
206 struct in_band *in_band;
207 struct discovery *discovery;
208 struct fail_open *fail_open;
209 struct pinsched *miss_sched, *action_sched;
210 struct executer *executer;
211 struct netflow *netflow;
214 struct classifier cls;
215 bool need_revalidate;
216 long long int next_expiration;
217 struct tag_set revalidate_set;
219 /* OpenFlow connections. */
220 struct list all_conns;
221 struct ofconn *controller;
222 struct pvconn **listeners;
224 struct pvconn **snoops;
227 /* Hooks for ovs-vswitchd. */
228 const struct ofhooks *ofhooks;
231 /* Used by default ofhooks. */
232 struct mac_learning *ml;
235 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
237 static const struct ofhooks default_ofhooks;
239 static uint64_t pick_datapath_id(struct dpif *, uint64_t fallback_dpid);
240 static uint64_t pick_fallback_dpid(void);
241 static void send_packet_in_miss(struct ofpbuf *, void *ofproto);
242 static void send_packet_in_action(struct ofpbuf *, void *ofproto);
243 static void update_used(struct ofproto *);
244 static void update_stats(struct ofproto *, struct rule *,
245 const struct odp_flow_stats *);
246 static void expire_rule(struct cls_rule *, void *ofproto);
247 static void active_timeout(struct ofproto *ofproto, struct rule *rule);
248 static bool revalidate_rule(struct ofproto *p, struct rule *rule);
249 static void revalidate_cb(struct cls_rule *rule_, void *p_);
251 static void handle_odp_msg(struct ofproto *, struct ofpbuf *);
253 static void handle_openflow(struct ofconn *, struct ofproto *,
256 static void refresh_port_group(struct ofproto *, unsigned int group);
257 static void update_port(struct ofproto *, const char *devname);
258 static int init_ports(struct ofproto *);
259 static void reinit_ports(struct ofproto *);
262 ofproto_create(const char *datapath, const struct ofhooks *ofhooks, void *aux,
263 struct ofproto **ofprotop)
265 struct dpifmon *dpifmon;
266 struct odp_stats stats;
273 /* Connect to datapath and start listening for messages. */
274 error = dpif_open(datapath, &dpif);
276 VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
279 error = dpif_get_dp_stats(&dpif, &stats);
281 VLOG_ERR("failed to obtain stats for datapath %s: %s",
282 datapath, strerror(error));
286 error = dpif_set_listen_mask(&dpif, ODPL_MISS | ODPL_ACTION);
288 VLOG_ERR("failed to listen on datapath %s: %s",
289 datapath, strerror(error));
293 dpif_flow_flush(&dpif);
296 /* Start monitoring datapath ports for status changes. */
297 error = dpifmon_create(datapath, &dpifmon);
299 VLOG_ERR("failed to starting monitoring datapath %s: %s",
300 datapath, strerror(error));
305 /* Initialize settings. */
306 p = xcalloc(1, sizeof *p);
307 p->fallback_dpid = pick_fallback_dpid();
308 p->datapath_id = pick_datapath_id(&dpif, p->fallback_dpid);
309 VLOG_INFO("using datapath ID %012"PRIx64, p->datapath_id);
310 p->manufacturer = xstrdup("Nicira Networks, Inc.");
311 p->hardware = xstrdup("Reference Implementation");
312 p->software = xstrdup(VERSION BUILDNR);
313 p->serial = xstrdup("None");
315 /* Initialize datapath. */
317 p->dpifmon = dpifmon;
318 port_array_init(&p->ports);
319 shash_init(&p->port_by_name);
320 p->max_ports = stats.max_ports;
322 /* Initialize submodules. */
323 p->switch_status = switch_status_create(p);
327 p->miss_sched = p->action_sched = NULL;
331 /* Initialize flow table. */
332 classifier_init(&p->cls);
333 p->need_revalidate = false;
334 p->next_expiration = time_msec() + 1000;
335 tag_set_init(&p->revalidate_set);
337 /* Initialize OpenFlow connections. */
338 list_init(&p->all_conns);
339 p->controller = ofconn_create(p, rconn_create(5, 8));
340 p->controller->pktbuf = pktbuf_create();
341 p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
347 /* Initialize hooks. */
349 p->ofhooks = ofhooks;
353 p->ofhooks = &default_ofhooks;
355 p->ml = mac_learning_create();
358 /* Register switch status category. */
359 p->ss_cat = switch_status_register(p->switch_status, "remote",
360 rconn_status_cb, p->controller->rconn);
363 error = init_ports(p);
374 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
376 uint64_t old_dpid = p->datapath_id;
377 p->datapath_id = (datapath_id
379 : pick_datapath_id(&p->dpif, p->fallback_dpid));
380 if (p->datapath_id != old_dpid) {
381 VLOG_INFO("datapath ID changed to %012"PRIx64, p->datapath_id);
382 rconn_reconnect(p->controller->rconn);
387 ofproto_set_mgmt_id(struct ofproto *p, uint64_t mgmt_id)
389 p->mgmt_id = mgmt_id;
393 ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
395 probe_interval = probe_interval ? MAX(probe_interval, 5) : 0;
396 rconn_set_probe_interval(p->controller->rconn, probe_interval);
398 int trigger_duration = probe_interval ? probe_interval * 3 : 15;
399 fail_open_set_trigger_duration(p->fail_open, trigger_duration);
404 ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
406 rconn_set_max_backoff(p->controller->rconn, max_backoff);
410 ofproto_set_desc(struct ofproto *p,
411 const char *manufacturer, const char *hardware,
412 const char *software, const char *serial)
415 free(p->manufacturer);
416 p->manufacturer = xstrdup(manufacturer);
420 p->hardware = xstrdup(hardware);
424 p->software = xstrdup(software);
428 p->serial = xstrdup(serial);
433 ofproto_set_in_band(struct ofproto *p, bool in_band)
435 if (in_band != (p->in_band != NULL)) {
437 in_band_create(p, &p->dpif, p->switch_status,
438 p->controller->rconn, &p->in_band);
441 ofproto_set_discovery(p, false, NULL, true);
442 in_band_destroy(p->in_band);
445 rconn_reconnect(p->controller->rconn);
451 ofproto_set_discovery(struct ofproto *p, bool discovery,
452 const char *re, bool update_resolv_conf)
454 if (discovery != (p->discovery != NULL)) {
456 int error = ofproto_set_in_band(p, true);
460 error = discovery_create(re, update_resolv_conf,
461 &p->dpif, p->switch_status,
467 discovery_destroy(p->discovery);
470 rconn_disconnect(p->controller->rconn);
471 } else if (discovery) {
472 discovery_set_update_resolv_conf(p->discovery, update_resolv_conf);
473 return discovery_set_accept_controller_re(p->discovery, re);
479 ofproto_set_controller(struct ofproto *ofproto, const char *controller)
481 if (ofproto->discovery) {
483 } else if (controller) {
484 if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) {
485 return rconn_connect(ofproto->controller->rconn, controller);
490 rconn_disconnect(ofproto->controller->rconn);
496 set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp,
497 const struct svec *svec)
499 struct pvconn **pvconns = *pvconnsp;
500 size_t n_pvconns = *n_pvconnsp;
504 for (i = 0; i < n_pvconns; i++) {
505 pvconn_close(pvconns[i]);
509 pvconns = xmalloc(svec->n * sizeof *pvconns);
511 for (i = 0; i < svec->n; i++) {
512 const char *name = svec->names[i];
513 struct pvconn *pvconn;
516 error = pvconn_open(name, &pvconn);
518 pvconns[n_pvconns++] = pvconn;
520 VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
528 *n_pvconnsp = n_pvconns;
534 ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners)
536 return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners);
540 ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops)
542 return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops);
546 ofproto_set_netflow(struct ofproto *ofproto,
547 const struct netflow_options *nf_options)
549 if (nf_options->collectors.n) {
550 if (!ofproto->netflow) {
551 ofproto->netflow = netflow_create();
553 return netflow_set_options(ofproto->netflow, nf_options);
555 netflow_destroy(ofproto->netflow);
556 ofproto->netflow = NULL;
562 ofproto_set_failure(struct ofproto *ofproto, bool fail_open)
565 struct rconn *rconn = ofproto->controller->rconn;
566 int trigger_duration = rconn_get_probe_interval(rconn) * 3;
567 if (!ofproto->fail_open) {
568 ofproto->fail_open = fail_open_create(ofproto, trigger_duration,
569 ofproto->switch_status,
572 fail_open_set_trigger_duration(ofproto->fail_open,
576 fail_open_destroy(ofproto->fail_open);
577 ofproto->fail_open = NULL;
582 ofproto_set_rate_limit(struct ofproto *ofproto,
583 int rate_limit, int burst_limit)
585 if (rate_limit > 0) {
586 if (!ofproto->miss_sched) {
587 ofproto->miss_sched = pinsched_create(rate_limit, burst_limit,
588 ofproto->switch_status);
589 ofproto->action_sched = pinsched_create(rate_limit, burst_limit,
592 pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit);
593 pinsched_set_limits(ofproto->action_sched,
594 rate_limit, burst_limit);
597 pinsched_destroy(ofproto->miss_sched);
598 ofproto->miss_sched = NULL;
599 pinsched_destroy(ofproto->action_sched);
600 ofproto->action_sched = NULL;
605 ofproto_set_stp(struct ofproto *ofproto UNUSED, bool enable_stp)
609 VLOG_WARN("STP is not yet implemented");
617 ofproto_set_remote_execution(struct ofproto *ofproto, const char *command_acl,
618 const char *command_dir)
621 if (!ofproto->executer) {
622 return executer_create(command_acl, command_dir,
625 executer_set_acl(ofproto->executer, command_acl, command_dir);
628 executer_destroy(ofproto->executer);
629 ofproto->executer = NULL;
635 ofproto_get_datapath_id(const struct ofproto *ofproto)
637 return ofproto->datapath_id;
641 ofproto_get_mgmt_id(const struct ofproto *ofproto)
643 return ofproto->mgmt_id;
647 ofproto_get_probe_interval(const struct ofproto *ofproto)
649 return rconn_get_probe_interval(ofproto->controller->rconn);
653 ofproto_get_max_backoff(const struct ofproto *ofproto)
655 return rconn_get_max_backoff(ofproto->controller->rconn);
659 ofproto_get_in_band(const struct ofproto *ofproto)
661 return ofproto->in_band != NULL;
665 ofproto_get_discovery(const struct ofproto *ofproto)
667 return ofproto->discovery != NULL;
671 ofproto_get_controller(const struct ofproto *ofproto)
673 return rconn_get_name(ofproto->controller->rconn);
677 ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
681 for (i = 0; i < ofproto->n_listeners; i++) {
682 svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
687 ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops)
691 for (i = 0; i < ofproto->n_snoops; i++) {
692 svec_add(snoops, pvconn_get_name(ofproto->snoops[i]));
697 ofproto_destroy(struct ofproto *p)
699 struct ofconn *ofconn, *next_ofconn;
700 struct ofport *ofport;
701 unsigned int port_no;
708 ofproto_flush_flows(p);
709 classifier_destroy(&p->cls);
711 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
713 ofconn_destroy(ofconn, p);
716 dpif_close(&p->dpif);
717 dpifmon_destroy(p->dpifmon);
718 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
721 shash_destroy(&p->port_by_name);
723 switch_status_destroy(p->switch_status);
724 in_band_destroy(p->in_band);
725 discovery_destroy(p->discovery);
726 fail_open_destroy(p->fail_open);
727 pinsched_destroy(p->miss_sched);
728 pinsched_destroy(p->action_sched);
729 executer_destroy(p->executer);
730 netflow_destroy(p->netflow);
732 switch_status_unregister(p->ss_cat);
734 for (i = 0; i < p->n_listeners; i++) {
735 pvconn_close(p->listeners[i]);
739 for (i = 0; i < p->n_snoops; i++) {
740 pvconn_close(p->snoops[i]);
744 mac_learning_destroy(p->ml);
750 ofproto_run(struct ofproto *p)
752 int error = ofproto_run1(p);
754 error = ofproto_run2(p, false);
760 ofproto_run1(struct ofproto *p)
762 struct ofconn *ofconn, *next_ofconn;
767 for (i = 0; i < 50; i++) {
771 error = dpif_recv(&p->dpif, &buf);
773 if (error == ENODEV) {
774 /* Someone destroyed the datapath behind our back. The caller
775 * better destroy us and give up, because we're just going to
776 * spin from here on out. */
777 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
778 VLOG_ERR_RL(&rl, "dp%u: datapath was destroyed externally",
785 handle_odp_msg(p, buf);
788 while ((error = dpifmon_poll(p->dpifmon, &devname)) != EAGAIN) {
789 if (error == ENOBUFS) {
792 update_port(p, devname);
798 in_band_run(p->in_band);
801 char *controller_name;
802 if (rconn_is_connectivity_questionable(p->controller->rconn)) {
803 discovery_question_connectivity(p->discovery);
805 if (discovery_run(p->discovery, &controller_name)) {
806 if (controller_name) {
807 rconn_connect(p->controller->rconn, controller_name);
809 rconn_disconnect(p->controller->rconn);
813 pinsched_run(p->miss_sched, send_packet_in_miss, p);
814 pinsched_run(p->action_sched, send_packet_in_action, p);
816 executer_run(p->executer);
819 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
821 ofconn_run(ofconn, p);
824 /* Fail-open maintenance. Do this after processing the ofconns since
825 * fail-open checks the status of the controller rconn. */
827 fail_open_run(p->fail_open);
830 for (i = 0; i < p->n_listeners; i++) {
834 retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
836 ofconn_create(p, rconn_new_from_vconn("passive", vconn));
837 } else if (retval != EAGAIN) {
838 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
842 for (i = 0; i < p->n_snoops; i++) {
846 retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
848 rconn_add_monitor(p->controller->rconn, vconn);
849 } else if (retval != EAGAIN) {
850 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
854 if (time_msec() >= p->next_expiration) {
855 COVERAGE_INC(ofproto_expiration);
856 p->next_expiration = time_msec() + 1000;
859 classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p);
861 /* Let the hook know that we're at a stable point: all outstanding data
862 * in existing flows has been accounted to the account_cb. Thus, the
863 * hook can now reasonably do operations that depend on having accurate
864 * flow volume accounting (currently, that's just bond rebalancing). */
865 if (p->ofhooks->account_checkpoint_cb) {
866 p->ofhooks->account_checkpoint_cb(p->aux);
871 netflow_run(p->netflow);
877 struct revalidate_cbdata {
878 struct ofproto *ofproto;
879 bool revalidate_all; /* Revalidate all exact-match rules? */
880 bool revalidate_subrules; /* Revalidate all exact-match subrules? */
881 struct tag_set revalidate_set; /* Set of tags to revalidate. */
885 ofproto_run2(struct ofproto *p, bool revalidate_all)
887 if (p->need_revalidate || revalidate_all
888 || !tag_set_is_empty(&p->revalidate_set)) {
889 struct revalidate_cbdata cbdata;
891 cbdata.revalidate_all = revalidate_all;
892 cbdata.revalidate_subrules = p->need_revalidate;
893 cbdata.revalidate_set = p->revalidate_set;
894 tag_set_init(&p->revalidate_set);
895 COVERAGE_INC(ofproto_revalidate);
896 classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
897 p->need_revalidate = false;
904 ofproto_wait(struct ofproto *p)
906 struct ofconn *ofconn;
909 dpif_recv_wait(&p->dpif);
910 dpifmon_wait(p->dpifmon);
911 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
915 in_band_wait(p->in_band);
918 discovery_wait(p->discovery);
921 fail_open_wait(p->fail_open);
923 pinsched_wait(p->miss_sched);
924 pinsched_wait(p->action_sched);
926 executer_wait(p->executer);
928 if (!tag_set_is_empty(&p->revalidate_set)) {
929 poll_immediate_wake();
931 if (p->need_revalidate) {
932 /* Shouldn't happen, but if it does just go around again. */
933 VLOG_DBG_RL(&rl, "need revalidate in ofproto_wait_cb()");
934 poll_immediate_wake();
935 } else if (p->next_expiration != LLONG_MAX) {
936 poll_timer_wait(p->next_expiration - time_msec());
938 for (i = 0; i < p->n_listeners; i++) {
939 pvconn_wait(p->listeners[i]);
941 for (i = 0; i < p->n_snoops; i++) {
942 pvconn_wait(p->snoops[i]);
947 ofproto_revalidate(struct ofproto *ofproto, tag_type tag)
949 tag_set_add(&ofproto->revalidate_set, tag);
953 ofproto_get_revalidate_set(struct ofproto *ofproto)
955 return &ofproto->revalidate_set;
959 ofproto_is_alive(const struct ofproto *p)
961 return p->discovery || rconn_is_alive(p->controller->rconn);
965 ofproto_send_packet(struct ofproto *p, const flow_t *flow,
966 const union ofp_action *actions, size_t n_actions,
967 const struct ofpbuf *packet)
969 struct odp_actions odp_actions;
972 error = xlate_actions(actions, n_actions, flow, p, packet, &odp_actions,
978 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
980 dpif_execute(&p->dpif, flow->in_port, odp_actions.actions,
981 odp_actions.n_actions, packet);
986 ofproto_add_flow(struct ofproto *p,
987 const flow_t *flow, uint32_t wildcards, unsigned int priority,
988 const union ofp_action *actions, size_t n_actions,
992 rule = rule_create(p, NULL, actions, n_actions,
993 idle_timeout >= 0 ? idle_timeout : 5 /* XXX */, 0);
994 cls_rule_from_flow(&rule->cr, flow, wildcards, priority);
995 rule_insert(p, rule, NULL, 0);
999 ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow,
1000 uint32_t wildcards, unsigned int priority)
1004 rule = rule_from_cls_rule(classifier_find_rule_exactly(&ofproto->cls,
1008 rule_remove(ofproto, rule);
1013 destroy_rule(struct cls_rule *rule_, void *ofproto_)
1015 struct rule *rule = rule_from_cls_rule(rule_);
1016 struct ofproto *ofproto = ofproto_;
1018 /* Mark the flow as not installed, even though it might really be
1019 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1020 * There is no point in uninstalling it individually since we are about to
1021 * blow away all the flows with dpif_flow_flush(). */
1022 rule->installed = false;
1024 rule_remove(ofproto, rule);
1028 ofproto_flush_flows(struct ofproto *ofproto)
1030 COVERAGE_INC(ofproto_flush);
1031 classifier_for_each(&ofproto->cls, CLS_INC_ALL, destroy_rule, ofproto);
1032 dpif_flow_flush(&ofproto->dpif);
1033 if (ofproto->in_band) {
1034 in_band_flushed(ofproto->in_band);
1036 if (ofproto->fail_open) {
1037 fail_open_flushed(ofproto->fail_open);
1042 reinit_ports(struct ofproto *p)
1044 struct svec devnames;
1045 struct ofport *ofport;
1046 unsigned int port_no;
1047 struct odp_port *odp_ports;
1051 svec_init(&devnames);
1052 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
1053 svec_add (&devnames, (char *) ofport->opp.name);
1055 dpif_port_list(&p->dpif, &odp_ports, &n_odp_ports);
1056 for (i = 0; i < n_odp_ports; i++) {
1057 svec_add (&devnames, odp_ports[i].devname);
1061 svec_sort_unique(&devnames);
1062 for (i = 0; i < devnames.n; i++) {
1063 update_port(p, devnames.names[i]);
1065 svec_destroy(&devnames);
1069 refresh_port_group(struct ofproto *p, unsigned int group)
1073 struct ofport *port;
1074 unsigned int port_no;
1076 assert(group == DP_GROUP_ALL || group == DP_GROUP_FLOOD);
1078 ports = xmalloc(port_array_count(&p->ports) * sizeof *ports);
1080 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1081 if (group == DP_GROUP_ALL || !(port->opp.config & OFPPC_NO_FLOOD)) {
1082 ports[n_ports++] = port_no;
1085 dpif_port_group_set(&p->dpif, group, ports, n_ports);
1090 refresh_port_groups(struct ofproto *p)
1092 refresh_port_group(p, DP_GROUP_FLOOD);
1093 refresh_port_group(p, DP_GROUP_ALL);
1096 static struct ofport *
1097 make_ofport(const struct odp_port *odp_port)
1099 enum netdev_flags flags;
1100 struct ofport *ofport;
1101 struct netdev *netdev;
1105 error = netdev_open(odp_port->devname, NETDEV_ETH_TYPE_NONE, &netdev);
1107 VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
1108 "cannot be opened (%s)",
1109 odp_port->devname, odp_port->port,
1110 odp_port->devname, strerror(error));
1114 ofport = xmalloc(sizeof *ofport);
1115 ofport->netdev = netdev;
1116 ofport->opp.port_no = odp_port_to_ofp_port(odp_port->port);
1117 memcpy(ofport->opp.hw_addr, netdev_get_etheraddr(netdev), ETH_ALEN);
1118 memcpy(ofport->opp.name, odp_port->devname,
1119 MIN(sizeof ofport->opp.name, sizeof odp_port->devname));
1120 ofport->opp.name[sizeof ofport->opp.name - 1] = '\0';
1122 netdev_get_flags(netdev, &flags);
1123 ofport->opp.config = flags & NETDEV_UP ? 0 : OFPPC_PORT_DOWN;
1125 netdev_get_carrier(netdev, &carrier);
1126 ofport->opp.state = carrier ? 0 : OFPPS_LINK_DOWN;
1128 netdev_get_features(netdev,
1129 &ofport->opp.curr, &ofport->opp.advertised,
1130 &ofport->opp.supported, &ofport->opp.peer);
1135 ofport_conflicts(const struct ofproto *p, const struct odp_port *odp_port)
1137 if (port_array_get(&p->ports, odp_port->port)) {
1138 VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath",
1141 } else if (shash_find(&p->port_by_name, odp_port->devname)) {
1142 VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath",
1151 ofport_equal(const struct ofport *a_, const struct ofport *b_)
1153 const struct ofp_phy_port *a = &a_->opp;
1154 const struct ofp_phy_port *b = &b_->opp;
1156 BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */
1157 return (a->port_no == b->port_no
1158 && !memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr)
1159 && !strcmp((char *) a->name, (char *) b->name)
1160 && a->state == b->state
1161 && a->config == b->config
1162 && a->curr == b->curr
1163 && a->advertised == b->advertised
1164 && a->supported == b->supported
1165 && a->peer == b->peer);
1169 send_port_status(struct ofproto *p, const struct ofport *ofport,
1172 /* XXX Should limit the number of queued port status change messages. */
1173 struct ofconn *ofconn;
1174 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
1175 struct ofp_port_status *ops;
1178 ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
1179 ops->reason = reason;
1180 ops->desc = ofport->opp;
1181 hton_ofp_phy_port(&ops->desc);
1182 queue_tx(b, ofconn, NULL);
1184 if (p->ofhooks->port_changed_cb) {
1185 p->ofhooks->port_changed_cb(reason, &ofport->opp, p->aux);
1190 ofport_install(struct ofproto *p, struct ofport *ofport)
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 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no), NULL);
1201 shash_delete(&p->port_by_name,
1202 shash_find(&p->port_by_name, (char *) ofport->opp.name));
1206 ofport_free(struct ofport *ofport)
1209 netdev_close(ofport->netdev);
1215 update_port(struct ofproto *p, const char *devname)
1217 struct odp_port odp_port;
1218 struct ofport *old_ofport;
1219 struct ofport *new_ofport;
1222 COVERAGE_INC(ofproto_update_port);
1224 /* Query the datapath for port information. */
1225 error = dpif_port_query_by_name(&p->dpif, devname, &odp_port);
1227 /* Find the old ofport. */
1228 old_ofport = shash_find_data(&p->port_by_name, devname);
1231 /* There's no port named 'devname' but there might be a port with
1232 * the same port number. This could happen if a port is deleted
1233 * and then a new one added in its place very quickly, or if a port
1234 * is renamed. In the former case we want to send an OFPPR_DELETE
1235 * and an OFPPR_ADD, and in the latter case we want to send a
1236 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1237 * the old port's ifindex against the new port, or perhaps less
1238 * reliably but more portably by comparing the old port's MAC
1239 * against the new port's MAC. However, this code isn't that smart
1240 * and always sends an OFPPR_MODIFY (XXX). */
1241 old_ofport = port_array_get(&p->ports, odp_port.port);
1243 } else if (error != ENOENT && error != ENODEV) {
1244 VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error "
1245 "%s", strerror(error));
1249 /* Create a new ofport. */
1250 new_ofport = !error ? make_ofport(&odp_port) : NULL;
1252 /* Eliminate a few pathological cases. */
1253 if (!old_ofport && !new_ofport) {
1255 } else if (old_ofport && new_ofport) {
1256 /* Most of the 'config' bits are OpenFlow soft state, but
1257 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1258 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1259 * leaves the other bits 0.) */
1260 new_ofport->opp.config |= old_ofport->opp.config & ~OFPPC_PORT_DOWN;
1262 if (ofport_equal(old_ofport, new_ofport)) {
1263 /* False alarm--no change. */
1264 ofport_free(new_ofport);
1269 /* Now deal with the normal cases. */
1271 ofport_remove(p, old_ofport);
1274 ofport_install(p, new_ofport);
1276 send_port_status(p, new_ofport ? new_ofport : old_ofport,
1277 (!old_ofport ? OFPPR_ADD
1278 : !new_ofport ? OFPPR_DELETE
1280 ofport_free(old_ofport);
1282 /* Update port groups. */
1283 refresh_port_groups(p);
1287 init_ports(struct ofproto *p)
1289 struct odp_port *ports;
1294 error = dpif_port_list(&p->dpif, &ports, &n_ports);
1299 for (i = 0; i < n_ports; i++) {
1300 const struct odp_port *odp_port = &ports[i];
1301 if (!ofport_conflicts(p, odp_port)) {
1302 struct ofport *ofport = make_ofport(odp_port);
1304 ofport_install(p, ofport);
1309 refresh_port_groups(p);
1313 static struct ofconn *
1314 ofconn_create(struct ofproto *p, struct rconn *rconn)
1316 struct ofconn *ofconn = xmalloc(sizeof *ofconn);
1317 list_push_back(&p->all_conns, &ofconn->node);
1318 ofconn->rconn = rconn;
1319 ofconn->pktbuf = NULL;
1320 ofconn->send_flow_exp = false;
1321 ofconn->miss_send_len = 0;
1322 ofconn->packet_in_counter = rconn_packet_counter_create ();
1323 ofconn->reply_counter = rconn_packet_counter_create ();
1328 ofconn_destroy(struct ofconn *ofconn, struct ofproto *p)
1331 executer_rconn_closing(p->executer, ofconn->rconn);
1334 list_remove(&ofconn->node);
1335 rconn_destroy(ofconn->rconn);
1336 rconn_packet_counter_destroy(ofconn->packet_in_counter);
1337 rconn_packet_counter_destroy(ofconn->reply_counter);
1338 pktbuf_destroy(ofconn->pktbuf);
1343 ofconn_run(struct ofconn *ofconn, struct ofproto *p)
1347 rconn_run(ofconn->rconn);
1349 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1350 /* Limit the number of iterations to prevent other tasks from
1352 for (iteration = 0; iteration < 50; iteration++) {
1353 struct ofpbuf *of_msg = rconn_recv(ofconn->rconn);
1358 fail_open_maybe_recover(p->fail_open);
1360 handle_openflow(ofconn, p, of_msg);
1361 ofpbuf_delete(of_msg);
1365 if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
1366 ofconn_destroy(ofconn, p);
1371 ofconn_wait(struct ofconn *ofconn)
1373 rconn_run_wait(ofconn->rconn);
1374 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1375 rconn_recv_wait(ofconn->rconn);
1377 COVERAGE_INC(ofproto_ofconn_stuck);
1381 /* Caller is responsible for initializing the 'cr' member of the returned
1383 static struct rule *
1384 rule_create(struct ofproto *ofproto, struct rule *super,
1385 const union ofp_action *actions, size_t n_actions,
1386 uint16_t idle_timeout, uint16_t hard_timeout)
1388 struct rule *rule = xcalloc(1, sizeof *rule);
1389 rule->idle_timeout = idle_timeout;
1390 rule->hard_timeout = hard_timeout;
1391 rule->used = rule->created = time_msec();
1392 rule->super = super;
1394 list_push_back(&super->list, &rule->list);
1396 list_init(&rule->list);
1398 rule->n_actions = n_actions;
1399 rule->actions = xmemdup(actions, n_actions * sizeof *actions);
1400 netflow_flow_clear(&rule->nf_flow);
1401 netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->created);
1406 static struct rule *
1407 rule_from_cls_rule(const struct cls_rule *cls_rule)
1409 return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
1413 rule_free(struct rule *rule)
1415 free(rule->actions);
1416 free(rule->odp_actions);
1420 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1421 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1422 * through all of its subrules and revalidates them, destroying any that no
1423 * longer has a super-rule (which is probably all of them).
1425 * Before calling this function, the caller must make have removed 'rule' from
1426 * the classifier. If 'rule' is an exact-match rule, the caller is also
1427 * responsible for ensuring that it has been uninstalled from the datapath. */
1429 rule_destroy(struct ofproto *ofproto, struct rule *rule)
1432 struct rule *subrule, *next;
1433 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
1434 revalidate_rule(ofproto, subrule);
1437 list_remove(&rule->list);
1443 rule_has_out_port(const struct rule *rule, uint16_t out_port)
1445 const union ofp_action *oa;
1446 struct actions_iterator i;
1448 if (out_port == htons(OFPP_NONE)) {
1451 for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
1452 oa = actions_next(&i)) {
1453 if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
1460 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1461 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1463 * The flow that 'packet' actually contains does not need to actually match
1464 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1465 * the packet and byte counters for 'rule' will be credited for the packet sent
1466 * out whether or not the packet actually matches 'rule'.
1468 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1469 * the caller must already have accurately composed ODP actions for it given
1470 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1471 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1472 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1473 * actions and apply them to 'packet'. */
1475 rule_execute(struct ofproto *ofproto, struct rule *rule,
1476 struct ofpbuf *packet, const flow_t *flow)
1478 const union odp_action *actions;
1480 struct odp_actions a;
1482 /* Grab or compose the ODP actions.
1484 * The special case for an exact-match 'rule' where 'flow' is not the
1485 * rule's flow is important to avoid, e.g., sending a packet out its input
1486 * port simply because the ODP actions were composed for the wrong
1488 if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) {
1489 struct rule *super = rule->super ? rule->super : rule;
1490 if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
1491 packet, &a, NULL, 0, NULL)) {
1494 actions = a.actions;
1495 n_actions = a.n_actions;
1497 actions = rule->odp_actions;
1498 n_actions = rule->n_odp_actions;
1501 /* Execute the ODP actions. */
1502 if (!dpif_execute(&ofproto->dpif, flow->in_port,
1503 actions, n_actions, packet)) {
1504 struct odp_flow_stats stats;
1505 flow_extract_stats(flow, packet, &stats);
1506 update_stats(ofproto, rule, &stats);
1507 rule->used = time_msec();
1508 netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, rule->used);
1513 rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
1516 struct rule *displaced_rule;
1518 /* Insert the rule in the classifier. */
1519 displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
1520 if (!rule->cr.wc.wildcards) {
1521 rule_make_actions(p, rule, packet);
1524 /* Send the packet and credit it to the rule. */
1527 flow_extract(packet, in_port, &flow);
1528 rule_execute(p, rule, packet, &flow);
1531 /* Install the rule in the datapath only after sending the packet, to
1532 * avoid packet reordering. */
1533 if (rule->cr.wc.wildcards) {
1534 COVERAGE_INC(ofproto_add_wc_flow);
1535 p->need_revalidate = true;
1537 rule_install(p, rule, displaced_rule);
1540 /* Free the rule that was displaced, if any. */
1541 if (displaced_rule) {
1542 rule_destroy(p, displaced_rule);
1546 static struct rule *
1547 rule_create_subrule(struct ofproto *ofproto, struct rule *rule,
1550 struct rule *subrule = rule_create(ofproto, rule, NULL, 0,
1551 rule->idle_timeout, rule->hard_timeout);
1552 COVERAGE_INC(ofproto_subrule_create);
1553 cls_rule_from_flow(&subrule->cr, flow, 0,
1554 (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
1555 : rule->cr.priority));
1556 classifier_insert_exact(&ofproto->cls, &subrule->cr);
1562 rule_remove(struct ofproto *ofproto, struct rule *rule)
1564 if (rule->cr.wc.wildcards) {
1565 COVERAGE_INC(ofproto_del_wc_flow);
1566 ofproto->need_revalidate = true;
1568 rule_uninstall(ofproto, rule);
1570 classifier_remove(&ofproto->cls, &rule->cr);
1571 rule_destroy(ofproto, rule);
1574 /* Returns true if the actions changed, false otherwise. */
1576 rule_make_actions(struct ofproto *p, struct rule *rule,
1577 const struct ofpbuf *packet)
1579 const struct rule *super;
1580 struct odp_actions a;
1583 assert(!rule->cr.wc.wildcards);
1585 super = rule->super ? rule->super : rule;
1587 xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p,
1588 packet, &a, &rule->tags, &rule->may_install,
1589 &rule->nf_flow.output_iface);
1591 actions_len = a.n_actions * sizeof *a.actions;
1592 if (rule->n_odp_actions != a.n_actions
1593 || memcmp(rule->odp_actions, a.actions, actions_len)) {
1594 COVERAGE_INC(ofproto_odp_unchanged);
1595 free(rule->odp_actions);
1596 rule->n_odp_actions = a.n_actions;
1597 rule->odp_actions = xmemdup(a.actions, actions_len);
1605 do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags,
1606 struct odp_flow_put *put)
1608 memset(&put->flow.stats, 0, sizeof put->flow.stats);
1609 put->flow.key = rule->cr.flow;
1610 put->flow.actions = rule->odp_actions;
1611 put->flow.n_actions = rule->n_odp_actions;
1613 return dpif_flow_put(&ofproto->dpif, put);
1617 rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule)
1619 assert(!rule->cr.wc.wildcards);
1621 if (rule->may_install) {
1622 struct odp_flow_put put;
1623 if (!do_put_flow(p, rule,
1624 ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS,
1626 rule->installed = true;
1627 if (displaced_rule) {
1628 update_stats(p, displaced_rule, &put.flow.stats);
1629 rule_post_uninstall(p, displaced_rule);
1632 } else if (displaced_rule) {
1633 rule_uninstall(p, displaced_rule);
1638 rule_reinstall(struct ofproto *ofproto, struct rule *rule)
1640 if (rule->installed) {
1641 struct odp_flow_put put;
1642 COVERAGE_INC(ofproto_dp_missed);
1643 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1645 rule_install(ofproto, rule, NULL);
1650 rule_update_actions(struct ofproto *ofproto, struct rule *rule)
1652 bool actions_changed;
1653 uint16_t new_out_iface, old_out_iface;
1655 old_out_iface = rule->nf_flow.output_iface;
1656 actions_changed = rule_make_actions(ofproto, rule, NULL);
1658 if (rule->may_install) {
1659 if (rule->installed) {
1660 if (actions_changed) {
1661 struct odp_flow_put put;
1662 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY
1663 | ODPPF_ZERO_STATS, &put);
1664 update_stats(ofproto, rule, &put.flow.stats);
1666 /* Temporarily set the old output iface so that NetFlow
1667 * messages have the correct output interface for the old
1669 new_out_iface = rule->nf_flow.output_iface;
1670 rule->nf_flow.output_iface = old_out_iface;
1671 rule_post_uninstall(ofproto, rule);
1672 rule->nf_flow.output_iface = new_out_iface;
1675 rule_install(ofproto, rule, NULL);
1678 rule_uninstall(ofproto, rule);
1683 rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes)
1685 uint64_t total_bytes = rule->byte_count + extra_bytes;
1687 if (ofproto->ofhooks->account_flow_cb
1688 && total_bytes > rule->accounted_bytes)
1690 ofproto->ofhooks->account_flow_cb(
1691 &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
1692 total_bytes - rule->accounted_bytes, ofproto->aux);
1693 rule->accounted_bytes = total_bytes;
1698 rule_uninstall(struct ofproto *p, struct rule *rule)
1700 assert(!rule->cr.wc.wildcards);
1701 if (rule->installed) {
1702 struct odp_flow odp_flow;
1704 odp_flow.key = rule->cr.flow;
1705 odp_flow.actions = NULL;
1706 odp_flow.n_actions = 0;
1707 if (!dpif_flow_del(&p->dpif, &odp_flow)) {
1708 update_stats(p, rule, &odp_flow.stats);
1710 rule->installed = false;
1712 rule_post_uninstall(p, rule);
1717 is_controller_rule(struct rule *rule)
1719 /* If the only action is send to the controller then don't report
1720 * NetFlow expiration messages since it is just part of the control
1721 * logic for the network and not real traffic. */
1723 if (rule && rule->super) {
1724 struct rule *super = rule->super;
1726 return super->n_actions == 1 &&
1727 super->actions[0].type == htons(OFPAT_OUTPUT) &&
1728 super->actions[0].output.port == htons(OFPP_CONTROLLER);
1735 rule_post_uninstall(struct ofproto *ofproto, struct rule *rule)
1737 struct rule *super = rule->super;
1739 rule_account(ofproto, rule, 0);
1741 if (ofproto->netflow && !is_controller_rule(rule)) {
1742 struct ofexpired expired;
1743 expired.flow = rule->cr.flow;
1744 expired.packet_count = rule->packet_count;
1745 expired.byte_count = rule->byte_count;
1746 expired.used = rule->used;
1747 netflow_expire(ofproto->netflow, &rule->nf_flow, &expired);
1750 super->packet_count += rule->packet_count;
1751 super->byte_count += rule->byte_count;
1753 /* Reset counters to prevent double counting if the rule ever gets
1755 rule->packet_count = 0;
1756 rule->byte_count = 0;
1757 rule->accounted_bytes = 0;
1759 netflow_flow_clear(&rule->nf_flow);
1764 queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
1765 struct rconn_packet_counter *counter)
1767 update_openflow_length(msg);
1768 if (rconn_send(ofconn->rconn, msg, counter)) {
1774 send_error(const struct ofconn *ofconn, const struct ofp_header *oh,
1775 int error, const void *data, size_t len)
1778 struct ofp_error_msg *oem;
1780 if (!(error >> 16)) {
1781 VLOG_WARN_RL(&rl, "not sending bad error code %d to controller",
1786 COVERAGE_INC(ofproto_error);
1787 oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR,
1788 oh ? oh->xid : 0, &buf);
1789 oem->type = htons((unsigned int) error >> 16);
1790 oem->code = htons(error & 0xffff);
1791 memcpy(oem->data, data, len);
1792 queue_tx(buf, ofconn, ofconn->reply_counter);
1796 send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
1799 size_t oh_length = ntohs(oh->length);
1800 send_error(ofconn, oh, error, oh, MIN(oh_length, 64));
1804 hton_ofp_phy_port(struct ofp_phy_port *opp)
1806 opp->port_no = htons(opp->port_no);
1807 opp->config = htonl(opp->config);
1808 opp->state = htonl(opp->state);
1809 opp->curr = htonl(opp->curr);
1810 opp->advertised = htonl(opp->advertised);
1811 opp->supported = htonl(opp->supported);
1812 opp->peer = htonl(opp->peer);
1816 handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh)
1818 struct ofp_header *rq = oh;
1819 queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter);
1824 handle_features_request(struct ofproto *p, struct ofconn *ofconn,
1825 struct ofp_header *oh)
1827 struct ofp_switch_features *osf;
1829 unsigned int port_no;
1830 struct ofport *port;
1832 osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
1833 osf->datapath_id = htonll(p->datapath_id);
1834 osf->n_buffers = htonl(pktbuf_capacity());
1836 osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
1837 OFPC_PORT_STATS | OFPC_MULTI_PHY_TX);
1838 osf->actions = htonl((1u << OFPAT_OUTPUT) |
1839 (1u << OFPAT_SET_VLAN_VID) |
1840 (1u << OFPAT_SET_VLAN_PCP) |
1841 (1u << OFPAT_STRIP_VLAN) |
1842 (1u << OFPAT_SET_DL_SRC) |
1843 (1u << OFPAT_SET_DL_DST) |
1844 (1u << OFPAT_SET_NW_SRC) |
1845 (1u << OFPAT_SET_NW_DST) |
1846 (1u << OFPAT_SET_TP_SRC) |
1847 (1u << OFPAT_SET_TP_DST));
1849 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1850 hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
1853 queue_tx(buf, ofconn, ofconn->reply_counter);
1858 handle_get_config_request(struct ofproto *p, struct ofconn *ofconn,
1859 struct ofp_header *oh)
1862 struct ofp_switch_config *osc;
1866 /* Figure out flags. */
1867 dpif_get_drop_frags(&p->dpif, &drop_frags);
1868 flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
1869 if (ofconn->send_flow_exp) {
1870 flags |= OFPC_SEND_FLOW_EXP;
1874 osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
1875 osc->flags = htons(flags);
1876 osc->miss_send_len = htons(ofconn->miss_send_len);
1877 queue_tx(buf, ofconn, ofconn->reply_counter);
1883 handle_set_config(struct ofproto *p, struct ofconn *ofconn,
1884 struct ofp_switch_config *osc)
1889 error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc);
1893 flags = ntohs(osc->flags);
1895 ofconn->send_flow_exp = (flags & OFPC_SEND_FLOW_EXP) != 0;
1897 if (ofconn == p->controller) {
1898 switch (flags & OFPC_FRAG_MASK) {
1899 case OFPC_FRAG_NORMAL:
1900 dpif_set_drop_frags(&p->dpif, false);
1902 case OFPC_FRAG_DROP:
1903 dpif_set_drop_frags(&p->dpif, true);
1906 VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
1912 if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) {
1913 if (ntohs(osc->miss_send_len) != 0) {
1914 ofconn->pktbuf = pktbuf_create();
1916 pktbuf_destroy(ofconn->pktbuf);
1920 ofconn->miss_send_len = ntohs(osc->miss_send_len);
1926 add_output_group_action(struct odp_actions *actions, uint16_t group,
1927 uint16_t *nf_output_iface)
1929 odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group;
1931 if (group == DP_GROUP_ALL || group == DP_GROUP_FLOOD) {
1932 *nf_output_iface = NF_OUT_FLOOD;
1937 add_controller_action(struct odp_actions *actions,
1938 const struct ofp_action_output *oao)
1940 union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
1941 a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
1944 struct action_xlate_ctx {
1946 const flow_t *flow; /* Flow to which these actions correspond. */
1947 int recurse; /* Recursion level, via xlate_table_action. */
1948 struct ofproto *ofproto;
1949 const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
1950 * null pointer if we are revalidating
1951 * without a packet to refer to. */
1954 struct odp_actions *out; /* Datapath actions. */
1955 tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
1956 bool may_set_up_flow; /* True ordinarily; false if the actions must
1957 * be reassessed for every packet. */
1958 uint16_t nf_output_iface; /* Output interface index for NetFlow. */
1961 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
1962 struct action_xlate_ctx *ctx);
1965 add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
1967 const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port);
1970 if (ofport->opp.config & OFPPC_NO_FWD) {
1971 /* Forwarding disabled on port. */
1976 * We don't have an ofport record for this port, but it doesn't hurt to
1977 * allow forwarding to it anyhow. Maybe such a port will appear later
1978 * and we're pre-populating the flow table.
1982 odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port;
1983 ctx->nf_output_iface = port;
1986 static struct rule *
1987 lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow)
1990 rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
1992 /* The rule we found might not be valid, since we could be in need of
1993 * revalidation. If it is not valid, don't return it. */
1996 && ofproto->need_revalidate
1997 && !revalidate_rule(ofproto, rule)) {
1998 COVERAGE_INC(ofproto_invalidated);
2006 xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
2008 if (!ctx->recurse) {
2013 flow.in_port = in_port;
2015 rule = lookup_valid_rule(ctx->ofproto, &flow);
2022 do_xlate_actions(rule->actions, rule->n_actions, ctx);
2029 xlate_output_action(struct action_xlate_ctx *ctx,
2030 const struct ofp_action_output *oao)
2033 uint16_t prev_nf_output_iface = ctx->nf_output_iface;
2035 ctx->nf_output_iface = NF_OUT_DROP;
2037 switch (ntohs(oao->port)) {
2039 add_output_action(ctx, ctx->flow->in_port);
2042 xlate_table_action(ctx, ctx->flow->in_port);
2045 if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
2046 ctx->out, ctx->tags,
2047 &ctx->nf_output_iface,
2048 ctx->ofproto->aux)) {
2049 COVERAGE_INC(ofproto_uninstallable);
2050 ctx->may_set_up_flow = false;
2054 add_output_group_action(ctx->out, DP_GROUP_FLOOD,
2055 &ctx->nf_output_iface);
2058 add_output_group_action(ctx->out, DP_GROUP_ALL, &ctx->nf_output_iface);
2060 case OFPP_CONTROLLER:
2061 add_controller_action(ctx->out, oao);
2064 add_output_action(ctx, ODPP_LOCAL);
2067 odp_port = ofp_port_to_odp_port(ntohs(oao->port));
2068 if (odp_port != ctx->flow->in_port) {
2069 add_output_action(ctx, odp_port);
2074 if (prev_nf_output_iface == NF_OUT_FLOOD) {
2075 ctx->nf_output_iface = NF_OUT_FLOOD;
2076 } else if (ctx->nf_output_iface == NF_OUT_DROP) {
2077 ctx->nf_output_iface = prev_nf_output_iface;
2078 } else if (prev_nf_output_iface != NF_OUT_DROP &&
2079 ctx->nf_output_iface != NF_OUT_FLOOD) {
2080 ctx->nf_output_iface = NF_OUT_MULTI;
2085 xlate_nicira_action(struct action_xlate_ctx *ctx,
2086 const struct nx_action_header *nah)
2088 const struct nx_action_resubmit *nar;
2089 int subtype = ntohs(nah->subtype);
2091 assert(nah->vendor == htonl(NX_VENDOR_ID));
2093 case NXAST_RESUBMIT:
2094 nar = (const struct nx_action_resubmit *) nah;
2095 xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
2099 VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
2105 do_xlate_actions(const union ofp_action *in, size_t n_in,
2106 struct action_xlate_ctx *ctx)
2108 struct actions_iterator iter;
2109 const union ofp_action *ia;
2110 const struct ofport *port;
2112 port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_port);
2113 if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
2114 port->opp.config & (eth_addr_equals(ctx->flow->dl_dst, stp_eth_addr)
2115 ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
2116 /* Drop this flow. */
2120 for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
2121 uint16_t type = ntohs(ia->type);
2122 union odp_action *oa;
2126 xlate_output_action(ctx, &ia->output);
2129 case OFPAT_SET_VLAN_VID:
2130 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID);
2131 oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid;
2134 case OFPAT_SET_VLAN_PCP:
2135 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP);
2136 oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp;
2139 case OFPAT_STRIP_VLAN:
2140 odp_actions_add(ctx->out, ODPAT_STRIP_VLAN);
2143 case OFPAT_SET_DL_SRC:
2144 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC);
2145 memcpy(oa->dl_addr.dl_addr,
2146 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2149 case OFPAT_SET_DL_DST:
2150 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST);
2151 memcpy(oa->dl_addr.dl_addr,
2152 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2155 case OFPAT_SET_NW_SRC:
2156 oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC);
2157 oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
2160 case OFPAT_SET_TP_SRC:
2161 oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC);
2162 oa->tp_port.tp_port = ia->tp_port.tp_port;
2166 xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
2170 VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
2177 xlate_actions(const union ofp_action *in, size_t n_in,
2178 const flow_t *flow, struct ofproto *ofproto,
2179 const struct ofpbuf *packet,
2180 struct odp_actions *out, tag_type *tags, bool *may_set_up_flow,
2181 uint16_t *nf_output_iface)
2183 tag_type no_tags = 0;
2184 struct action_xlate_ctx ctx;
2185 COVERAGE_INC(ofproto_ofp2odp);
2186 odp_actions_init(out);
2189 ctx.ofproto = ofproto;
2190 ctx.packet = packet;
2192 ctx.tags = tags ? tags : &no_tags;
2193 ctx.may_set_up_flow = true;
2194 ctx.nf_output_iface = NF_OUT_DROP;
2195 do_xlate_actions(in, n_in, &ctx);
2197 /* Check with in-band control to see if we're allowed to set up this
2199 if (!in_band_rule_check(ofproto->in_band, flow, out)) {
2200 ctx.may_set_up_flow = false;
2203 if (may_set_up_flow) {
2204 *may_set_up_flow = ctx.may_set_up_flow;
2206 if (nf_output_iface) {
2207 *nf_output_iface = ctx.nf_output_iface;
2209 if (odp_actions_overflow(out)) {
2210 odp_actions_init(out);
2211 return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
2217 handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
2218 struct ofp_header *oh)
2220 struct ofp_packet_out *opo;
2221 struct ofpbuf payload, *buffer;
2222 struct odp_actions actions;
2228 error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
2232 opo = (struct ofp_packet_out *) oh;
2234 COVERAGE_INC(ofproto_packet_out);
2235 if (opo->buffer_id != htonl(UINT32_MAX)) {
2236 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id),
2238 if (error || !buffer) {
2246 flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
2247 error = xlate_actions((const union ofp_action *) opo->actions, n_actions,
2248 &flow, p, &payload, &actions, NULL, NULL, NULL);
2253 dpif_execute(&p->dpif, flow.in_port, actions.actions, actions.n_actions,
2255 ofpbuf_delete(buffer);
2261 update_port_config(struct ofproto *p, struct ofport *port,
2262 uint32_t config, uint32_t mask)
2264 mask &= config ^ port->opp.config;
2265 if (mask & OFPPC_PORT_DOWN) {
2266 if (config & OFPPC_PORT_DOWN) {
2267 netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
2269 netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
2272 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2273 if (mask & REVALIDATE_BITS) {
2274 COVERAGE_INC(ofproto_costly_flags);
2275 port->opp.config ^= mask & REVALIDATE_BITS;
2276 p->need_revalidate = true;
2278 #undef REVALIDATE_BITS
2279 if (mask & OFPPC_NO_FLOOD) {
2280 port->opp.config ^= OFPPC_NO_FLOOD;
2281 refresh_port_group(p, DP_GROUP_FLOOD);
2283 if (mask & OFPPC_NO_PACKET_IN) {
2284 port->opp.config ^= OFPPC_NO_PACKET_IN;
2289 handle_port_mod(struct ofproto *p, struct ofp_header *oh)
2291 const struct ofp_port_mod *opm;
2292 struct ofport *port;
2295 error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
2299 opm = (struct ofp_port_mod *) oh;
2301 port = port_array_get(&p->ports,
2302 ofp_port_to_odp_port(ntohs(opm->port_no)));
2304 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
2305 } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
2306 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
2308 update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask));
2309 if (opm->advertise) {
2310 netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
2316 static struct ofpbuf *
2317 make_stats_reply(uint32_t xid, uint16_t type, size_t body_len)
2319 struct ofp_stats_reply *osr;
2322 msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
2323 osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
2325 osr->flags = htons(0);
2329 static struct ofpbuf *
2330 start_stats_reply(const struct ofp_stats_request *request, size_t body_len)
2332 return make_stats_reply(request->header.xid, request->type, body_len);
2336 append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp)
2338 struct ofpbuf *msg = *msgp;
2339 assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
2340 if (nbytes + msg->size > UINT16_MAX) {
2341 struct ofp_stats_reply *reply = msg->data;
2342 reply->flags = htons(OFPSF_REPLY_MORE);
2343 *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes);
2344 queue_tx(msg, ofconn, ofconn->reply_counter);
2346 return ofpbuf_put_uninit(*msgp, nbytes);
2350 handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn,
2351 struct ofp_stats_request *request)
2353 struct ofp_desc_stats *ods;
2356 msg = start_stats_reply(request, sizeof *ods);
2357 ods = append_stats_reply(sizeof *ods, ofconn, &msg);
2358 strncpy(ods->mfr_desc, p->manufacturer, sizeof ods->mfr_desc);
2359 strncpy(ods->hw_desc, p->hardware, sizeof ods->hw_desc);
2360 strncpy(ods->sw_desc, p->software, sizeof ods->sw_desc);
2361 strncpy(ods->serial_num, p->serial, sizeof ods->serial_num);
2362 queue_tx(msg, ofconn, ofconn->reply_counter);
2368 count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
2370 struct rule *rule = rule_from_cls_rule(cls_rule);
2371 int *n_subrules = n_subrules_;
2379 handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn,
2380 struct ofp_stats_request *request)
2382 struct ofp_table_stats *ots;
2384 struct odp_stats dpstats;
2385 int n_exact, n_subrules, n_wild;
2387 msg = start_stats_reply(request, sizeof *ots * 2);
2389 /* Count rules of various kinds. */
2391 classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
2392 n_exact = classifier_count_exact(&p->cls) - n_subrules;
2393 n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
2396 dpif_get_dp_stats(&p->dpif, &dpstats);
2397 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2398 memset(ots, 0, sizeof *ots);
2399 ots->table_id = TABLEID_HASH;
2400 strcpy(ots->name, "hash");
2401 ots->wildcards = htonl(0);
2402 ots->max_entries = htonl(dpstats.max_capacity);
2403 ots->active_count = htonl(n_exact);
2404 ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit +
2406 ots->matched_count = htonll(dpstats.n_hit); /* XXX */
2408 /* Classifier table. */
2409 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2410 memset(ots, 0, sizeof *ots);
2411 ots->table_id = TABLEID_CLASSIFIER;
2412 strcpy(ots->name, "classifier");
2413 ots->wildcards = htonl(OFPFW_ALL);
2414 ots->max_entries = htonl(65536);
2415 ots->active_count = htonl(n_wild);
2416 ots->lookup_count = htonll(0); /* XXX */
2417 ots->matched_count = htonll(0); /* XXX */
2419 queue_tx(msg, ofconn, ofconn->reply_counter);
2424 handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn,
2425 struct ofp_stats_request *request)
2427 struct ofp_port_stats *ops;
2429 struct ofport *port;
2430 unsigned int port_no;
2432 msg = start_stats_reply(request, sizeof *ops * 16);
2433 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
2434 struct netdev_stats stats;
2436 /* Intentionally ignore return value, since errors will set 'stats' to
2437 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2439 netdev_get_stats(port->netdev, &stats);
2441 ops = append_stats_reply(sizeof *ops, ofconn, &msg);
2442 ops->port_no = htons(odp_port_to_ofp_port(port_no));
2443 memset(ops->pad, 0, sizeof ops->pad);
2444 ops->rx_packets = htonll(stats.rx_packets);
2445 ops->tx_packets = htonll(stats.tx_packets);
2446 ops->rx_bytes = htonll(stats.rx_bytes);
2447 ops->tx_bytes = htonll(stats.tx_bytes);
2448 ops->rx_dropped = htonll(stats.rx_dropped);
2449 ops->tx_dropped = htonll(stats.tx_dropped);
2450 ops->rx_errors = htonll(stats.rx_errors);
2451 ops->tx_errors = htonll(stats.tx_errors);
2452 ops->rx_frame_err = htonll(stats.rx_frame_errors);
2453 ops->rx_over_err = htonll(stats.rx_over_errors);
2454 ops->rx_crc_err = htonll(stats.rx_crc_errors);
2455 ops->collisions = htonll(stats.collisions);
2458 queue_tx(msg, ofconn, ofconn->reply_counter);
2462 struct flow_stats_cbdata {
2463 struct ofproto *ofproto;
2464 struct ofconn *ofconn;
2470 query_stats(struct ofproto *p, struct rule *rule,
2471 uint64_t *packet_countp, uint64_t *byte_countp)
2473 uint64_t packet_count, byte_count;
2474 struct rule *subrule;
2475 struct odp_flow *odp_flows;
2478 packet_count = rule->packet_count;
2479 byte_count = rule->byte_count;
2481 n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1;
2482 odp_flows = xcalloc(1, n_odp_flows * sizeof *odp_flows);
2483 if (rule->cr.wc.wildcards) {
2485 LIST_FOR_EACH (subrule, struct rule, list, &rule->list) {
2486 odp_flows[i++].key = subrule->cr.flow;
2487 packet_count += subrule->packet_count;
2488 byte_count += subrule->byte_count;
2491 odp_flows[0].key = rule->cr.flow;
2494 if (!dpif_flow_get_multiple(&p->dpif, odp_flows, n_odp_flows)) {
2496 for (i = 0; i < n_odp_flows; i++) {
2497 struct odp_flow *odp_flow = &odp_flows[i];
2498 packet_count += odp_flow->stats.n_packets;
2499 byte_count += odp_flow->stats.n_bytes;
2504 *packet_countp = packet_count;
2505 *byte_countp = byte_count;
2509 flow_stats_cb(struct cls_rule *rule_, void *cbdata_)
2511 struct rule *rule = rule_from_cls_rule(rule_);
2512 struct flow_stats_cbdata *cbdata = cbdata_;
2513 struct ofp_flow_stats *ofs;
2514 uint64_t packet_count, byte_count;
2515 size_t act_len, len;
2517 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2521 act_len = sizeof *rule->actions * rule->n_actions;
2522 len = offsetof(struct ofp_flow_stats, actions) + act_len;
2524 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2526 ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg);
2527 ofs->length = htons(len);
2528 ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
2530 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofs->match);
2531 ofs->duration = htonl((time_msec() - rule->created) / 1000);
2532 ofs->priority = htons(rule->cr.priority);
2533 ofs->idle_timeout = htons(rule->idle_timeout);
2534 ofs->hard_timeout = htons(rule->hard_timeout);
2535 memset(ofs->pad2, 0, sizeof ofs->pad2);
2536 ofs->packet_count = htonll(packet_count);
2537 ofs->byte_count = htonll(byte_count);
2538 memcpy(ofs->actions, rule->actions, act_len);
2542 table_id_to_include(uint8_t table_id)
2544 return (table_id == TABLEID_HASH ? CLS_INC_EXACT
2545 : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD
2546 : table_id == 0xff ? CLS_INC_ALL
2551 handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn,
2552 const struct ofp_stats_request *osr,
2555 struct ofp_flow_stats_request *fsr;
2556 struct flow_stats_cbdata cbdata;
2557 struct cls_rule target;
2559 if (arg_size != sizeof *fsr) {
2560 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2562 fsr = (struct ofp_flow_stats_request *) osr->body;
2564 COVERAGE_INC(ofproto_flows_req);
2566 cbdata.ofconn = ofconn;
2567 cbdata.out_port = fsr->out_port;
2568 cbdata.msg = start_stats_reply(osr, 1024);
2569 cls_rule_from_match(&target, &fsr->match, 0);
2570 classifier_for_each_match(&p->cls, &target,
2571 table_id_to_include(fsr->table_id),
2572 flow_stats_cb, &cbdata);
2573 queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
2577 struct flow_stats_ds_cbdata {
2578 struct ofproto *ofproto;
2583 flow_stats_ds_cb(struct cls_rule *rule_, void *cbdata_)
2585 struct rule *rule = rule_from_cls_rule(rule_);
2586 struct flow_stats_ds_cbdata *cbdata = cbdata_;
2587 struct ds *results = cbdata->results;
2588 struct ofp_match match;
2589 uint64_t packet_count, byte_count;
2590 size_t act_len = sizeof *rule->actions * rule->n_actions;
2592 /* Don't report on subrules. */
2593 if (rule->super != NULL) {
2597 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2598 flow_to_ovs_match(&rule->cr.flow, rule->cr.wc.wildcards, &match);
2600 ds_put_format(results, "duration=%llds, ",
2601 (time_msec() - rule->created) / 1000);
2602 ds_put_format(results, "priority=%u, ", rule->cr.priority);
2603 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
2604 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
2605 ofp_print_match(results, &match, true);
2606 ofp_print_actions(results, &rule->actions->header, act_len);
2607 ds_put_cstr(results, "\n");
2610 /* Adds a pretty-printed description of all flows to 'results', including
2611 * those marked hidden by secchan (e.g., by in-band control). */
2613 ofproto_get_all_flows(struct ofproto *p, struct ds *results)
2615 struct ofp_match match;
2616 struct cls_rule target;
2617 struct flow_stats_ds_cbdata cbdata;
2619 memset(&match, 0, sizeof match);
2620 match.wildcards = htonl(OFPFW_ALL);
2623 cbdata.results = results;
2625 cls_rule_from_match(&target, &match, 0);
2626 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2627 flow_stats_ds_cb, &cbdata);
2630 struct aggregate_stats_cbdata {
2631 struct ofproto *ofproto;
2633 uint64_t packet_count;
2634 uint64_t byte_count;
2639 aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_)
2641 struct rule *rule = rule_from_cls_rule(rule_);
2642 struct aggregate_stats_cbdata *cbdata = cbdata_;
2643 uint64_t packet_count, byte_count;
2645 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2649 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2651 cbdata->packet_count += packet_count;
2652 cbdata->byte_count += byte_count;
2657 handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn,
2658 const struct ofp_stats_request *osr,
2661 struct ofp_aggregate_stats_request *asr;
2662 struct ofp_aggregate_stats_reply *reply;
2663 struct aggregate_stats_cbdata cbdata;
2664 struct cls_rule target;
2667 if (arg_size != sizeof *asr) {
2668 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2670 asr = (struct ofp_aggregate_stats_request *) osr->body;
2672 COVERAGE_INC(ofproto_agg_request);
2674 cbdata.out_port = asr->out_port;
2675 cbdata.packet_count = 0;
2676 cbdata.byte_count = 0;
2678 cls_rule_from_match(&target, &asr->match, 0);
2679 classifier_for_each_match(&p->cls, &target,
2680 table_id_to_include(asr->table_id),
2681 aggregate_stats_cb, &cbdata);
2683 msg = start_stats_reply(osr, sizeof *reply);
2684 reply = append_stats_reply(sizeof *reply, ofconn, &msg);
2685 reply->flow_count = htonl(cbdata.n_flows);
2686 reply->packet_count = htonll(cbdata.packet_count);
2687 reply->byte_count = htonll(cbdata.byte_count);
2688 queue_tx(msg, ofconn, ofconn->reply_counter);
2693 handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
2694 struct ofp_header *oh)
2696 struct ofp_stats_request *osr;
2700 error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr,
2705 osr = (struct ofp_stats_request *) oh;
2707 switch (ntohs(osr->type)) {
2709 return handle_desc_stats_request(p, ofconn, osr);
2712 return handle_flow_stats_request(p, ofconn, osr, arg_size);
2714 case OFPST_AGGREGATE:
2715 return handle_aggregate_stats_request(p, ofconn, osr, arg_size);
2718 return handle_table_stats_request(p, ofconn, osr);
2721 return handle_port_stats_request(p, ofconn, osr);
2724 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2727 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
2731 static long long int
2732 msec_from_nsec(uint64_t sec, uint32_t nsec)
2734 return !sec ? 0 : sec * 1000 + nsec / 1000000;
2738 update_time(struct ofproto *ofproto, struct rule *rule,
2739 const struct odp_flow_stats *stats)
2741 long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec);
2742 if (used > rule->used) {
2744 netflow_flow_update_time(ofproto->netflow, &rule->nf_flow, used);
2749 update_stats(struct ofproto *ofproto, struct rule *rule,
2750 const struct odp_flow_stats *stats)
2752 if (stats->n_packets) {
2753 update_time(ofproto, rule, stats);
2754 rule->packet_count += stats->n_packets;
2755 rule->byte_count += stats->n_bytes;
2756 netflow_flow_update_flags(&rule->nf_flow, stats->ip_tos,
2762 add_flow(struct ofproto *p, struct ofconn *ofconn,
2763 struct ofp_flow_mod *ofm, size_t n_actions)
2765 struct ofpbuf *packet;
2770 rule = rule_create(p, NULL, (const union ofp_action *) ofm->actions,
2771 n_actions, ntohs(ofm->idle_timeout),
2772 ntohs(ofm->hard_timeout));
2773 cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
2777 if (ofm->buffer_id != htonl(UINT32_MAX)) {
2778 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
2782 rule_insert(p, rule, packet, in_port);
2783 ofpbuf_delete(packet);
2788 modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
2789 size_t n_actions, uint16_t command, struct rule *rule)
2791 if (rule_is_hidden(rule)) {
2795 if (command == OFPFC_DELETE) {
2796 rule_remove(p, rule);
2798 size_t actions_len = n_actions * sizeof *rule->actions;
2800 if (n_actions == rule->n_actions
2801 && !memcmp(ofm->actions, rule->actions, actions_len))
2806 free(rule->actions);
2807 rule->actions = xmemdup(ofm->actions, actions_len);
2808 rule->n_actions = n_actions;
2810 if (rule->cr.wc.wildcards) {
2811 COVERAGE_INC(ofproto_mod_wc_flow);
2812 p->need_revalidate = true;
2814 rule_update_actions(p, rule);
2822 modify_flows_strict(struct ofproto *p, const struct ofp_flow_mod *ofm,
2823 size_t n_actions, uint16_t command)
2829 flow_from_match(&flow, &wildcards, &ofm->match);
2830 rule = rule_from_cls_rule(classifier_find_rule_exactly(
2831 &p->cls, &flow, wildcards,
2832 ntohs(ofm->priority)));
2835 if (command == OFPFC_DELETE
2836 && ofm->out_port != htons(OFPP_NONE)
2837 && !rule_has_out_port(rule, ofm->out_port)) {
2841 modify_flow(p, ofm, n_actions, command, rule);
2846 struct modify_flows_cbdata {
2847 struct ofproto *ofproto;
2848 const struct ofp_flow_mod *ofm;
2855 modify_flows_cb(struct cls_rule *rule_, void *cbdata_)
2857 struct rule *rule = rule_from_cls_rule(rule_);
2858 struct modify_flows_cbdata *cbdata = cbdata_;
2860 if (cbdata->out_port != htons(OFPP_NONE)
2861 && !rule_has_out_port(rule, cbdata->out_port)) {
2865 modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
2866 cbdata->command, rule);
2870 modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
2871 size_t n_actions, uint16_t command)
2873 struct modify_flows_cbdata cbdata;
2874 struct cls_rule target;
2878 cbdata.out_port = (command == OFPFC_DELETE ? ofm->out_port
2879 : htons(OFPP_NONE));
2880 cbdata.n_actions = n_actions;
2881 cbdata.command = command;
2883 cls_rule_from_match(&target, &ofm->match, 0);
2885 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2886 modify_flows_cb, &cbdata);
2891 handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
2892 struct ofp_flow_mod *ofm)
2897 error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
2898 sizeof *ofm->actions, &n_actions);
2903 normalize_match(&ofm->match);
2904 if (!ofm->match.wildcards) {
2905 ofm->priority = htons(UINT16_MAX);
2908 error = validate_actions((const union ofp_action *) ofm->actions,
2909 n_actions, p->max_ports);
2914 switch (ntohs(ofm->command)) {
2916 return add_flow(p, ofconn, ofm, n_actions);
2919 return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
2921 case OFPFC_MODIFY_STRICT:
2922 return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
2925 return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
2927 case OFPFC_DELETE_STRICT:
2928 return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
2931 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
2936 send_capability_reply(struct ofproto *p, struct ofconn *ofconn, uint32_t xid)
2938 struct ofmp_capability_reply *ocr;
2940 char capabilities[] = "com.nicira.mgmt.manager=false\n";
2942 ocr = make_openflow_xid(sizeof(*ocr), OFPT_VENDOR, xid, &b);
2943 ocr->header.header.vendor = htonl(NX_VENDOR_ID);
2944 ocr->header.header.subtype = htonl(NXT_MGMT);
2945 ocr->header.type = htons(OFMPT_CAPABILITY_REPLY);
2947 ocr->format = htonl(OFMPCOF_SIMPLE);
2948 ocr->mgmt_id = htonll(p->mgmt_id);
2950 ofpbuf_put(b, capabilities, strlen(capabilities));
2952 queue_tx(b, ofconn, ofconn->reply_counter);
2956 handle_ofmp(struct ofproto *p, struct ofconn *ofconn,
2957 struct ofmp_header *ofmph)
2959 size_t msg_len = ntohs(ofmph->header.header.length);
2960 if (msg_len < sizeof(*ofmph)) {
2961 VLOG_WARN_RL(&rl, "dropping short managment message: %zu\n", msg_len);
2962 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2965 if (ofmph->type == htons(OFMPT_CAPABILITY_REQUEST)) {
2966 struct ofmp_capability_request *ofmpcr;
2968 if (msg_len < sizeof(struct ofmp_capability_request)) {
2969 VLOG_WARN_RL(&rl, "dropping short capability request: %zu\n",
2971 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2974 ofmpcr = (struct ofmp_capability_request *)ofmph;
2975 if (ofmpcr->format != htonl(OFMPCAF_SIMPLE)) {
2976 /* xxx Find a better type than bad subtype */
2977 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2980 send_capability_reply(p, ofconn, ofmph->header.header.xid);
2983 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2988 handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
2990 struct ofp_vendor_header *ovh = msg;
2991 struct nicira_header *nh;
2993 if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
2994 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2996 if (ovh->vendor != htonl(NX_VENDOR_ID)) {
2997 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2999 if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
3000 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
3004 switch (ntohl(nh->subtype)) {
3005 case NXT_STATUS_REQUEST:
3006 return switch_status_handle_request(p->switch_status, ofconn->rconn,
3009 case NXT_ACT_SET_CONFIG:
3010 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
3012 case NXT_ACT_GET_CONFIG:
3013 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
3015 case NXT_COMMAND_REQUEST:
3017 return executer_handle_request(p->executer, ofconn->rconn, msg);
3022 return handle_ofmp(p, ofconn, msg);
3025 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
3029 handle_openflow(struct ofconn *ofconn, struct ofproto *p,
3030 struct ofpbuf *ofp_msg)
3032 struct ofp_header *oh = ofp_msg->data;
3035 COVERAGE_INC(ofproto_recv_openflow);
3037 case OFPT_ECHO_REQUEST:
3038 error = handle_echo_request(ofconn, oh);
3041 case OFPT_ECHO_REPLY:
3045 case OFPT_FEATURES_REQUEST:
3046 error = handle_features_request(p, ofconn, oh);
3049 case OFPT_GET_CONFIG_REQUEST:
3050 error = handle_get_config_request(p, ofconn, oh);
3053 case OFPT_SET_CONFIG:
3054 error = handle_set_config(p, ofconn, ofp_msg->data);
3057 case OFPT_PACKET_OUT:
3058 error = handle_packet_out(p, ofconn, ofp_msg->data);
3062 error = handle_port_mod(p, oh);
3066 error = handle_flow_mod(p, ofconn, ofp_msg->data);
3069 case OFPT_STATS_REQUEST:
3070 error = handle_stats_request(p, ofconn, oh);
3074 error = handle_vendor(p, ofconn, ofp_msg->data);
3078 if (VLOG_IS_WARN_ENABLED()) {
3079 char *s = ofp_to_string(oh, ntohs(oh->length), 2);
3080 VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
3083 error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
3088 send_error_oh(ofconn, ofp_msg->data, error);
3093 handle_odp_msg(struct ofproto *p, struct ofpbuf *packet)
3095 struct odp_msg *msg = packet->data;
3096 uint16_t in_port = odp_port_to_ofp_port(msg->port);
3098 struct ofpbuf payload;
3101 /* Handle controller actions. */
3102 if (msg->type == _ODPL_ACTION_NR) {
3103 COVERAGE_INC(ofproto_ctlr_action);
3104 pinsched_send(p->action_sched, in_port, packet,
3105 send_packet_in_action, p);
3109 payload.data = msg + 1;
3110 payload.size = msg->length - sizeof *msg;
3111 flow_extract(&payload, msg->port, &flow);
3113 /* Check with in-band control to see if this packet should be sent
3114 * to the local port regardless of the flow table. */
3115 if (in_band_msg_in_hook(p->in_band, &flow, &payload)) {
3116 union odp_action action;
3118 memset(&action, 0, sizeof(action));
3119 action.output.type = ODPAT_OUTPUT;
3120 action.output.port = ODPP_LOCAL;
3121 dpif_execute(&p->dpif, flow.in_port, &action, 1, &payload);
3124 rule = lookup_valid_rule(p, &flow);
3126 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3127 struct ofport *port = port_array_get(&p->ports, msg->port);
3129 if (port->opp.config & OFPPC_NO_PACKET_IN) {
3130 COVERAGE_INC(ofproto_no_packet_in);
3131 /* XXX install 'drop' flow entry */
3132 ofpbuf_delete(packet);
3136 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port);
3139 COVERAGE_INC(ofproto_packet_in);
3140 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
3144 if (rule->cr.wc.wildcards) {
3145 rule = rule_create_subrule(p, rule, &flow);
3146 rule_make_actions(p, rule, packet);
3148 if (!rule->may_install) {
3149 /* The rule is not installable, that is, we need to process every
3150 * packet, so process the current packet and set its actions into
3152 rule_make_actions(p, rule, packet);
3154 /* XXX revalidate rule if it needs it */
3158 rule_execute(p, rule, &payload, &flow);
3159 rule_reinstall(p, rule);
3161 if (rule->super && rule->super->cr.priority == FAIL_OPEN_PRIORITY
3162 && rconn_is_connected(p->controller->rconn)) {
3164 * Extra-special case for fail-open mode.
3166 * We are in fail-open mode and the packet matched the fail-open rule,
3167 * but we are connected to a controller too. We should send the packet
3168 * up to the controller in the hope that it will try to set up a flow
3169 * and thereby allow us to exit fail-open.
3171 * See the top-level comment in fail-open.c for more information.
3173 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
3175 ofpbuf_delete(packet);
3180 revalidate_cb(struct cls_rule *sub_, void *cbdata_)
3182 struct rule *sub = rule_from_cls_rule(sub_);
3183 struct revalidate_cbdata *cbdata = cbdata_;
3185 if (cbdata->revalidate_all
3186 || (cbdata->revalidate_subrules && sub->super)
3187 || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) {
3188 revalidate_rule(cbdata->ofproto, sub);
3193 revalidate_rule(struct ofproto *p, struct rule *rule)
3195 const flow_t *flow = &rule->cr.flow;
3197 COVERAGE_INC(ofproto_revalidate_rule);
3200 super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow));
3202 rule_remove(p, rule);
3204 } else if (super != rule->super) {
3205 COVERAGE_INC(ofproto_revalidate_moved);
3206 list_remove(&rule->list);
3207 list_push_back(&super->list, &rule->list);
3208 rule->super = super;
3209 rule->hard_timeout = super->hard_timeout;
3210 rule->idle_timeout = super->idle_timeout;
3211 rule->created = super->created;
3216 rule_update_actions(p, rule);
3220 static struct ofpbuf *
3221 compose_flow_exp(const struct rule *rule, long long int now, uint8_t reason)
3223 struct ofp_flow_expired *ofe;
3226 ofe = make_openflow(sizeof *ofe, OFPT_FLOW_EXPIRED, &buf);
3227 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofe->match);
3228 ofe->priority = htons(rule->cr.priority);
3229 ofe->reason = reason;
3230 ofe->duration = htonl((now - rule->created) / 1000);
3231 ofe->packet_count = htonll(rule->packet_count);
3232 ofe->byte_count = htonll(rule->byte_count);
3238 send_flow_exp(struct ofproto *p, struct rule *rule,
3239 long long int now, uint8_t reason)
3241 struct ofconn *ofconn;
3242 struct ofconn *prev;
3245 /* We limit the maximum number of queued flow expirations it by accounting
3246 * them under the counter for replies. That works because preventing
3247 * OpenFlow requests from being processed also prevents new flows from
3248 * being added (and expiring). (It also prevents processing OpenFlow
3249 * requests that would not add new flows, so it is imperfect.) */
3252 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3253 if (ofconn->send_flow_exp && rconn_is_connected(ofconn->rconn)) {
3255 queue_tx(ofpbuf_clone(buf), prev, prev->reply_counter);
3257 buf = compose_flow_exp(rule, now, reason);
3263 queue_tx(buf, prev, prev->reply_counter);
3268 uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule)
3270 assert(rule->installed);
3271 assert(!rule->cr.wc.wildcards);
3274 rule_remove(ofproto, rule);
3276 rule_uninstall(ofproto, rule);
3281 expire_rule(struct cls_rule *cls_rule, void *p_)
3283 struct ofproto *p = p_;
3284 struct rule *rule = rule_from_cls_rule(cls_rule);
3285 long long int hard_expire, idle_expire, expire, now;
3287 hard_expire = (rule->hard_timeout
3288 ? rule->created + rule->hard_timeout * 1000
3290 idle_expire = (rule->idle_timeout
3291 && (rule->super || list_is_empty(&rule->list))
3292 ? rule->used + rule->idle_timeout * 1000
3294 expire = MIN(hard_expire, idle_expire);
3298 if (rule->installed && now >= rule->used + 5000) {
3299 uninstall_idle_flow(p, rule);
3300 } else if (!rule->cr.wc.wildcards) {
3301 active_timeout(p, rule);
3307 COVERAGE_INC(ofproto_expired);
3309 /* Update stats. This code will be a no-op if the rule expired
3310 * due to an idle timeout. */
3311 if (rule->cr.wc.wildcards) {
3312 struct rule *subrule, *next;
3313 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
3314 rule_remove(p, subrule);
3317 rule_uninstall(p, rule);
3320 if (!rule_is_hidden(rule)) {
3321 send_flow_exp(p, rule, now,
3323 ? OFPER_HARD_TIMEOUT : OFPER_IDLE_TIMEOUT));
3325 rule_remove(p, rule);
3329 active_timeout(struct ofproto *ofproto, struct rule *rule)
3331 if (ofproto->netflow && !is_controller_rule(rule) &&
3332 netflow_active_timeout_expired(ofproto->netflow, &rule->nf_flow)) {
3333 struct ofexpired expired;
3334 struct odp_flow odp_flow;
3336 /* Get updated flow stats. */
3337 memset(&odp_flow, 0, sizeof odp_flow);
3338 if (rule->installed) {
3339 odp_flow.key = rule->cr.flow;
3340 odp_flow.flags = ODPFF_ZERO_TCP_FLAGS;
3341 dpif_flow_get(&ofproto->dpif, &odp_flow);
3343 if (odp_flow.stats.n_packets) {
3344 update_time(ofproto, rule, &odp_flow.stats);
3345 netflow_flow_update_flags(&rule->nf_flow, odp_flow.stats.ip_tos,
3346 odp_flow.stats.tcp_flags);
3350 expired.flow = rule->cr.flow;
3351 expired.packet_count = rule->packet_count +
3352 odp_flow.stats.n_packets;
3353 expired.byte_count = rule->byte_count + odp_flow.stats.n_bytes;
3354 expired.used = rule->used;
3356 netflow_expire(ofproto->netflow, &rule->nf_flow, &expired);
3358 /* Schedule us to send the accumulated records once we have
3359 * collected all of them. */
3360 poll_immediate_wake();
3365 update_used(struct ofproto *p)
3367 struct odp_flow *flows;
3372 error = dpif_flow_list_all(&p->dpif, &flows, &n_flows);
3377 for (i = 0; i < n_flows; i++) {
3378 struct odp_flow *f = &flows[i];
3381 rule = rule_from_cls_rule(
3382 classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX));
3383 if (!rule || !rule->installed) {
3384 COVERAGE_INC(ofproto_unexpected_rule);
3385 dpif_flow_del(&p->dpif, f);
3389 update_time(p, rule, &f->stats);
3390 rule_account(p, rule, f->stats.n_bytes);
3396 do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
3397 const struct ofpbuf *packet, int send_len)
3399 struct odp_msg *msg = packet->data;
3400 struct ofpbuf payload;
3404 /* Extract packet payload from 'msg'. */
3405 payload.data = msg + 1;
3406 payload.size = msg->length - sizeof *msg;
3408 /* Construct ofp_packet_in message. */
3409 reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
3410 opi = make_packet_in(buffer_id, odp_port_to_ofp_port(msg->port), reason,
3411 &payload, send_len);
3414 rconn_send_with_limit(ofconn->rconn, opi, ofconn->packet_in_counter, 100);
3418 send_packet_in_action(struct ofpbuf *packet, void *p_)
3420 struct ofproto *p = p_;
3421 struct ofconn *ofconn;
3422 struct odp_msg *msg;
3425 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3426 if (ofconn == p->controller || ofconn->miss_send_len) {
3427 do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg);
3430 ofpbuf_delete(packet);
3434 send_packet_in_miss(struct ofpbuf *packet, void *p_)
3436 struct ofproto *p = p_;
3437 bool in_fail_open = p->fail_open && fail_open_is_active(p->fail_open);
3438 struct ofconn *ofconn;
3439 struct ofpbuf payload;
3440 struct odp_msg *msg;
3443 payload.data = msg + 1;
3444 payload.size = msg->length - sizeof *msg;
3445 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3446 if (ofconn->miss_send_len) {
3447 struct pktbuf *pb = ofconn->pktbuf;
3448 uint32_t buffer_id = (in_fail_open
3450 : pktbuf_save(pb, &payload, msg->port));
3451 int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len
3453 do_send_packet_in(ofconn, buffer_id, packet, send_len);
3456 ofpbuf_delete(packet);
3460 pick_datapath_id(struct dpif *dpif, uint64_t fallback_dpid)
3462 char local_name[IF_NAMESIZE];
3463 uint8_t ea[ETH_ADDR_LEN];
3466 error = dpif_get_name(dpif, local_name, sizeof local_name);
3468 error = netdev_nodev_get_etheraddr(local_name, ea);
3470 return eth_addr_to_uint64(ea);
3472 VLOG_WARN("could not get MAC address for %s (%s)",
3473 local_name, strerror(error));
3476 return fallback_dpid;
3480 pick_fallback_dpid(void)
3482 uint8_t ea[ETH_ADDR_LEN];
3483 eth_addr_random(ea);
3484 ea[0] = 0x00; /* Set Nicira OUI. */
3487 return eth_addr_to_uint64(ea);
3491 default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
3492 struct odp_actions *actions, tag_type *tags,
3493 uint16_t *nf_output_iface, void *ofproto_)
3495 struct ofproto *ofproto = ofproto_;
3498 /* Drop frames for reserved multicast addresses. */
3499 if (eth_addr_is_reserved(flow->dl_dst)) {
3503 /* Learn source MAC (but don't try to learn from revalidation). */
3504 if (packet != NULL) {
3505 tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src,
3508 /* The log messages here could actually be useful in debugging,
3509 * so keep the rate limit relatively high. */
3510 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
3511 VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
3512 ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
3513 ofproto_revalidate(ofproto, rev_tag);
3517 /* Determine output port. */
3518 out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
3520 add_output_group_action(actions, DP_GROUP_FLOOD, nf_output_iface);
3521 } else if (out_port != flow->in_port) {
3522 odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port;
3523 *nf_output_iface = out_port;
3531 static const struct ofhooks default_ofhooks = {
3533 default_normal_ofhook_cb,