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"
30 #include "fail-open.h"
32 #include "mac-learning.h"
36 #include "ofp-print.h"
38 #include "openflow/nicira-ext.h"
39 #include "openflow/openflow.h"
40 #include "openflow/openflow-mgmt.h"
41 #include "openvswitch/datapath-protocol.h"
45 #include "poll-loop.h"
46 #include "port-array.h"
55 #include "vconn-ssl.h"
58 #define THIS_MODULE VLM_ofproto
68 TABLEID_CLASSIFIER = 1
72 struct netdev *netdev;
73 struct ofp_phy_port opp; /* In host byte order. */
76 static void ofport_free(struct ofport *);
77 static void hton_ofp_phy_port(struct ofp_phy_port *);
79 static int xlate_actions(const union ofp_action *in, size_t n_in,
80 const flow_t *flow, struct ofproto *ofproto,
81 const struct ofpbuf *packet,
82 struct odp_actions *out, tag_type *tags,
83 bool *may_setup_flow);
88 uint16_t idle_timeout; /* In seconds from time of last use. */
89 uint16_t hard_timeout; /* In seconds from time of creation. */
90 long long int used; /* Last-used time (0 if never used). */
91 long long int created; /* Creation time. */
92 uint64_t packet_count; /* Number of packets received. */
93 uint64_t byte_count; /* Number of bytes received. */
94 uint64_t accounted_bytes; /* Number of bytes passed to account_cb. */
95 uint8_t tcp_flags; /* Bitwise-OR of all TCP flags seen. */
96 uint8_t ip_tos; /* Last-seen IP type-of-service. */
97 tag_type tags; /* Tags (set only by hooks). */
99 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
100 * exact-match rule (having cr.wc.wildcards of 0) generated from the
101 * wildcard rule 'super'. In this case, 'list' is an element of the
104 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
105 * a list of subrules. A super-rule with no wildcards (where
106 * cr.wc.wildcards is 0) will never have any subrules. */
112 * A subrule has no actions (it uses the super-rule's actions). */
114 union ofp_action *actions;
118 * A super-rule with wildcard fields never has ODP actions (since the
119 * datapath only supports exact-match flows). */
120 bool installed; /* Installed in datapath? */
121 bool may_install; /* True ordinarily; false if actions must
122 * be reassessed for every packet. */
124 union odp_action *odp_actions;
128 rule_is_hidden(const struct rule *rule)
130 /* Subrules are merely an implementation detail, so hide them from the
132 if (rule->super != NULL) {
136 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
137 * (e.g. by in-band control) and are intentionally hidden from the
139 if (rule->cr.priority > UINT16_MAX) {
146 static struct rule *rule_create(struct rule *super, const union ofp_action *,
147 size_t n_actions, uint16_t idle_timeout,
148 uint16_t hard_timeout);
149 static void rule_free(struct rule *);
150 static void rule_destroy(struct ofproto *, struct rule *);
151 static struct rule *rule_from_cls_rule(const struct cls_rule *);
152 static void rule_insert(struct ofproto *, struct rule *,
153 struct ofpbuf *packet, uint16_t in_port);
154 static void rule_remove(struct ofproto *, struct rule *);
155 static bool rule_make_actions(struct ofproto *, struct rule *,
156 const struct ofpbuf *packet);
157 static void rule_install(struct ofproto *, struct rule *,
158 struct rule *displaced_rule);
159 static void rule_uninstall(struct ofproto *, struct rule *);
160 static void rule_post_uninstall(struct ofproto *, struct rule *);
165 struct pktbuf *pktbuf;
169 struct rconn_packet_counter *packet_in_counter;
171 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
172 * the maximum number before we stop reading OpenFlow requests. */
173 #define OFCONN_REPLY_MAX 100
174 struct rconn_packet_counter *reply_counter;
177 static struct ofconn *ofconn_create(struct ofproto *, struct rconn *);
178 static void ofconn_destroy(struct ofconn *, struct ofproto *);
179 static void ofconn_run(struct ofconn *, struct ofproto *);
180 static void ofconn_wait(struct ofconn *);
181 static void queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
182 struct rconn_packet_counter *counter);
186 uint64_t datapath_id; /* Datapath ID. */
187 uint64_t fallback_dpid; /* Datapath ID if no better choice found. */
188 uint64_t mgmt_id; /* Management channel identifier. */
189 char *manufacturer; /* Manufacturer. */
190 char *hardware; /* Hardware. */
191 char *software; /* Software version. */
192 char *serial; /* Serial number. */
196 struct netdev_monitor *netdev_monitor;
197 struct port_array ports; /* Index is ODP port nr; ofport->opp.port_no is
199 struct shash port_by_name;
203 struct switch_status *switch_status;
204 struct status_category *ss_cat;
205 struct in_band *in_band;
206 struct discovery *discovery;
207 struct fail_open *fail_open;
208 struct pinsched *miss_sched, *action_sched;
209 struct executer *executer;
210 struct netflow *netflow;
213 struct classifier cls;
214 bool need_revalidate;
215 long long int next_expiration;
216 struct tag_set revalidate_set;
218 /* OpenFlow connections. */
219 struct list all_conns;
220 struct ofconn *controller;
221 struct pvconn **listeners;
223 struct pvconn **snoops;
226 /* Hooks for ovs-vswitchd. */
227 const struct ofhooks *ofhooks;
230 /* Used by default ofhooks. */
231 struct mac_learning *ml;
234 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
236 static const struct ofhooks default_ofhooks;
238 static uint64_t pick_datapath_id(struct dpif *, uint64_t fallback_dpid);
239 static uint64_t pick_fallback_dpid(void);
240 static void send_packet_in_miss(struct ofpbuf *, void *ofproto);
241 static void send_packet_in_action(struct ofpbuf *, void *ofproto);
242 static void update_used(struct ofproto *);
243 static void update_stats(struct rule *, const struct odp_flow_stats *);
244 static void expire_rule(struct cls_rule *, void *ofproto);
245 static bool revalidate_rule(struct ofproto *p, struct rule *rule);
246 static void revalidate_cb(struct cls_rule *rule_, void *p_);
248 static void handle_odp_msg(struct ofproto *, struct ofpbuf *);
250 static void handle_openflow(struct ofconn *, struct ofproto *,
253 static void refresh_port_group(struct ofproto *, unsigned int group);
254 static void update_port(struct ofproto *, const char *devname);
255 static int init_ports(struct ofproto *);
256 static void reinit_ports(struct ofproto *);
259 ofproto_create(const char *datapath, const struct ofhooks *ofhooks, void *aux,
260 struct ofproto **ofprotop)
262 struct netdev_monitor *netdev_monitor;
263 struct odp_stats stats;
270 /* Connect to datapath and start listening for messages. */
271 error = dpif_open(datapath, &dpif);
273 VLOG_ERR("failed to open datapath %s: %s", datapath, strerror(error));
276 error = dpif_get_dp_stats(dpif, &stats);
278 VLOG_ERR("failed to obtain stats for datapath %s: %s",
279 datapath, strerror(error));
283 error = dpif_recv_set_mask(dpif, ODPL_MISS | ODPL_ACTION);
285 VLOG_ERR("failed to listen on datapath %s: %s",
286 datapath, strerror(error));
290 dpif_flow_flush(dpif);
291 dpif_recv_purge(dpif);
293 /* Arrange to monitor datapath ports for status changes. */
294 error = netdev_monitor_create(&netdev_monitor);
296 VLOG_ERR("failed to starting monitoring datapath %s: %s",
297 datapath, strerror(error));
302 /* Initialize settings. */
303 p = xcalloc(1, sizeof *p);
304 p->fallback_dpid = pick_fallback_dpid();
305 p->datapath_id = pick_datapath_id(dpif, p->fallback_dpid);
306 VLOG_INFO("using datapath ID %012"PRIx64, p->datapath_id);
307 p->manufacturer = xstrdup("Nicira Networks, Inc.");
308 p->hardware = xstrdup("Reference Implementation");
309 p->software = xstrdup(VERSION BUILDNR);
310 p->serial = xstrdup("None");
312 /* Initialize datapath. */
314 p->netdev_monitor = netdev_monitor;
315 port_array_init(&p->ports);
316 shash_init(&p->port_by_name);
317 p->max_ports = stats.max_ports;
319 /* Initialize submodules. */
320 p->switch_status = switch_status_create(p);
324 p->miss_sched = p->action_sched = NULL;
328 /* Initialize flow table. */
329 classifier_init(&p->cls);
330 p->need_revalidate = false;
331 p->next_expiration = time_msec() + 1000;
332 tag_set_init(&p->revalidate_set);
334 /* Initialize OpenFlow connections. */
335 list_init(&p->all_conns);
336 p->controller = ofconn_create(p, rconn_create(15, 15));
337 p->controller->pktbuf = pktbuf_create();
338 p->controller->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
344 /* Initialize hooks. */
346 p->ofhooks = ofhooks;
350 p->ofhooks = &default_ofhooks;
352 p->ml = mac_learning_create();
355 /* Register switch status category. */
356 p->ss_cat = switch_status_register(p->switch_status, "remote",
357 rconn_status_cb, p->controller->rconn);
360 error = init_ports(p);
371 ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
373 uint64_t old_dpid = p->datapath_id;
374 p->datapath_id = (datapath_id
376 : pick_datapath_id(p->dpif, p->fallback_dpid));
377 if (p->datapath_id != old_dpid) {
378 VLOG_INFO("datapath ID changed to %012"PRIx64, p->datapath_id);
379 rconn_reconnect(p->controller->rconn);
384 ofproto_set_mgmt_id(struct ofproto *p, uint64_t mgmt_id)
386 p->mgmt_id = mgmt_id;
390 ofproto_set_probe_interval(struct ofproto *p, int probe_interval)
392 probe_interval = probe_interval ? MAX(probe_interval, 5) : 0;
393 rconn_set_probe_interval(p->controller->rconn, probe_interval);
395 int trigger_duration = probe_interval ? probe_interval * 3 : 15;
396 fail_open_set_trigger_duration(p->fail_open, trigger_duration);
401 ofproto_set_max_backoff(struct ofproto *p, int max_backoff)
403 rconn_set_max_backoff(p->controller->rconn, max_backoff);
407 ofproto_set_desc(struct ofproto *p,
408 const char *manufacturer, const char *hardware,
409 const char *software, const char *serial)
412 free(p->manufacturer);
413 p->manufacturer = xstrdup(manufacturer);
417 p->hardware = xstrdup(hardware);
421 p->software = xstrdup(software);
425 p->serial = xstrdup(serial);
430 ofproto_set_in_band(struct ofproto *p, bool in_band)
432 if (in_band != (p->in_band != NULL)) {
434 return in_band_create(p, p->dpif, p->switch_status,
435 p->controller->rconn, &p->in_band);
437 ofproto_set_discovery(p, false, NULL, true);
438 in_band_destroy(p->in_band);
441 rconn_reconnect(p->controller->rconn);
447 ofproto_set_discovery(struct ofproto *p, bool discovery,
448 const char *re, bool update_resolv_conf)
450 if (discovery != (p->discovery != NULL)) {
452 int error = ofproto_set_in_band(p, true);
456 error = discovery_create(re, update_resolv_conf,
457 p->dpif, p->switch_status,
463 discovery_destroy(p->discovery);
466 rconn_disconnect(p->controller->rconn);
467 } else if (discovery) {
468 discovery_set_update_resolv_conf(p->discovery, update_resolv_conf);
469 return discovery_set_accept_controller_re(p->discovery, re);
475 ofproto_set_controller(struct ofproto *ofproto, const char *controller)
477 if (ofproto->discovery) {
479 } else if (controller) {
480 if (strcmp(rconn_get_name(ofproto->controller->rconn), controller)) {
481 return rconn_connect(ofproto->controller->rconn, controller);
486 rconn_disconnect(ofproto->controller->rconn);
492 set_pvconns(struct pvconn ***pvconnsp, size_t *n_pvconnsp,
493 const struct svec *svec)
495 struct pvconn **pvconns = *pvconnsp;
496 size_t n_pvconns = *n_pvconnsp;
500 for (i = 0; i < n_pvconns; i++) {
501 pvconn_close(pvconns[i]);
505 pvconns = xmalloc(svec->n * sizeof *pvconns);
507 for (i = 0; i < svec->n; i++) {
508 const char *name = svec->names[i];
509 struct pvconn *pvconn;
512 error = pvconn_open(name, &pvconn);
514 pvconns[n_pvconns++] = pvconn;
516 VLOG_ERR("failed to listen on %s: %s", name, strerror(error));
524 *n_pvconnsp = n_pvconns;
530 ofproto_set_listeners(struct ofproto *ofproto, const struct svec *listeners)
532 return set_pvconns(&ofproto->listeners, &ofproto->n_listeners, listeners);
536 ofproto_set_snoops(struct ofproto *ofproto, const struct svec *snoops)
538 return set_pvconns(&ofproto->snoops, &ofproto->n_snoops, snoops);
542 ofproto_set_netflow(struct ofproto *ofproto, const struct svec *collectors,
543 uint8_t engine_type, uint8_t engine_id, bool add_id_to_iface)
545 if (collectors && collectors->n) {
546 if (!ofproto->netflow) {
547 ofproto->netflow = netflow_create();
549 netflow_set_engine(ofproto->netflow, engine_type, engine_id,
551 return netflow_set_collectors(ofproto->netflow, collectors);
553 netflow_destroy(ofproto->netflow);
554 ofproto->netflow = NULL;
560 ofproto_set_failure(struct ofproto *ofproto, bool fail_open)
563 struct rconn *rconn = ofproto->controller->rconn;
564 int trigger_duration = rconn_get_probe_interval(rconn) * 3;
565 if (!ofproto->fail_open) {
566 ofproto->fail_open = fail_open_create(ofproto, trigger_duration,
567 ofproto->switch_status,
570 fail_open_set_trigger_duration(ofproto->fail_open,
574 fail_open_destroy(ofproto->fail_open);
575 ofproto->fail_open = NULL;
580 ofproto_set_rate_limit(struct ofproto *ofproto,
581 int rate_limit, int burst_limit)
583 if (rate_limit > 0) {
584 if (!ofproto->miss_sched) {
585 ofproto->miss_sched = pinsched_create(rate_limit, burst_limit,
586 ofproto->switch_status);
587 ofproto->action_sched = pinsched_create(rate_limit, burst_limit,
590 pinsched_set_limits(ofproto->miss_sched, rate_limit, burst_limit);
591 pinsched_set_limits(ofproto->action_sched,
592 rate_limit, burst_limit);
595 pinsched_destroy(ofproto->miss_sched);
596 ofproto->miss_sched = NULL;
597 pinsched_destroy(ofproto->action_sched);
598 ofproto->action_sched = NULL;
603 ofproto_set_stp(struct ofproto *ofproto UNUSED, bool enable_stp)
607 VLOG_WARN("STP is not yet implemented");
615 ofproto_set_remote_execution(struct ofproto *ofproto, const char *command_acl,
616 const char *command_dir)
619 if (!ofproto->executer) {
620 return executer_create(command_acl, command_dir,
623 executer_set_acl(ofproto->executer, command_acl, command_dir);
626 executer_destroy(ofproto->executer);
627 ofproto->executer = NULL;
633 ofproto_get_datapath_id(const struct ofproto *ofproto)
635 return ofproto->datapath_id;
639 ofproto_get_probe_interval(const struct ofproto *ofproto)
641 return rconn_get_probe_interval(ofproto->controller->rconn);
645 ofproto_get_max_backoff(const struct ofproto *ofproto)
647 return rconn_get_max_backoff(ofproto->controller->rconn);
651 ofproto_get_in_band(const struct ofproto *ofproto)
653 return ofproto->in_band != NULL;
657 ofproto_get_discovery(const struct ofproto *ofproto)
659 return ofproto->discovery != NULL;
663 ofproto_get_controller(const struct ofproto *ofproto)
665 return rconn_get_name(ofproto->controller->rconn);
669 ofproto_get_listeners(const struct ofproto *ofproto, struct svec *listeners)
673 for (i = 0; i < ofproto->n_listeners; i++) {
674 svec_add(listeners, pvconn_get_name(ofproto->listeners[i]));
679 ofproto_get_snoops(const struct ofproto *ofproto, struct svec *snoops)
683 for (i = 0; i < ofproto->n_snoops; i++) {
684 svec_add(snoops, pvconn_get_name(ofproto->snoops[i]));
689 ofproto_destroy(struct ofproto *p)
691 struct ofconn *ofconn, *next_ofconn;
692 struct ofport *ofport;
693 unsigned int port_no;
700 ofproto_flush_flows(p);
701 classifier_destroy(&p->cls);
703 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
705 ofconn_destroy(ofconn, p);
709 netdev_monitor_destroy(p->netdev_monitor);
710 PORT_ARRAY_FOR_EACH (ofport, &p->ports, port_no) {
713 shash_destroy(&p->port_by_name);
715 switch_status_destroy(p->switch_status);
716 in_band_destroy(p->in_band);
717 discovery_destroy(p->discovery);
718 fail_open_destroy(p->fail_open);
719 pinsched_destroy(p->miss_sched);
720 pinsched_destroy(p->action_sched);
721 executer_destroy(p->executer);
722 netflow_destroy(p->netflow);
724 switch_status_unregister(p->ss_cat);
726 for (i = 0; i < p->n_listeners; i++) {
727 pvconn_close(p->listeners[i]);
731 for (i = 0; i < p->n_snoops; i++) {
732 pvconn_close(p->snoops[i]);
736 mac_learning_destroy(p->ml);
742 ofproto_run(struct ofproto *p)
744 int error = ofproto_run1(p);
746 error = ofproto_run2(p, false);
752 process_port_change(struct ofproto *ofproto, int error, char *devname)
754 if (error == ENOBUFS) {
755 reinit_ports(ofproto);
757 update_port(ofproto, devname);
763 ofproto_run1(struct ofproto *p)
765 struct ofconn *ofconn, *next_ofconn;
770 for (i = 0; i < 50; i++) {
774 error = dpif_recv(p->dpif, &buf);
776 if (error == ENODEV) {
777 /* Someone destroyed the datapath behind our back. The caller
778 * better destroy us and give up, because we're just going to
779 * spin from here on out. */
780 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
781 VLOG_ERR_RL(&rl, "%s: datapath was destroyed externally",
788 handle_odp_msg(p, buf);
791 while ((error = dpif_port_poll(p->dpif, &devname)) != EAGAIN) {
792 process_port_change(p, error, devname);
794 while ((error = netdev_monitor_poll(p->netdev_monitor,
795 &devname)) != EAGAIN) {
796 process_port_change(p, error, devname);
800 in_band_run(p->in_band);
803 char *controller_name;
804 if (rconn_is_connectivity_questionable(p->controller->rconn)) {
805 discovery_question_connectivity(p->discovery);
807 if (discovery_run(p->discovery, &controller_name)) {
808 if (controller_name) {
809 rconn_connect(p->controller->rconn, controller_name);
811 rconn_disconnect(p->controller->rconn);
816 fail_open_run(p->fail_open);
818 pinsched_run(p->miss_sched, send_packet_in_miss, p);
819 pinsched_run(p->action_sched, send_packet_in_action, p);
821 executer_run(p->executer);
824 LIST_FOR_EACH_SAFE (ofconn, next_ofconn, struct ofconn, node,
826 ofconn_run(ofconn, p);
829 for (i = 0; i < p->n_listeners; i++) {
833 retval = pvconn_accept(p->listeners[i], OFP_VERSION, &vconn);
835 ofconn_create(p, rconn_new_from_vconn("passive", vconn));
836 } else if (retval != EAGAIN) {
837 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
841 for (i = 0; i < p->n_snoops; i++) {
845 retval = pvconn_accept(p->snoops[i], OFP_VERSION, &vconn);
847 rconn_add_monitor(p->controller->rconn, vconn);
848 } else if (retval != EAGAIN) {
849 VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
853 if (time_msec() >= p->next_expiration) {
854 COVERAGE_INC(ofproto_expiration);
855 p->next_expiration = time_msec() + 1000;
858 classifier_for_each(&p->cls, CLS_INC_ALL, expire_rule, p);
860 /* Let the hook know that we're at a stable point: all outstanding data
861 * in existing flows has been accounted to the account_cb. Thus, the
862 * hook can now reasonably do operations that depend on having accurate
863 * flow volume accounting (currently, that's just bond rebalancing). */
864 if (p->ofhooks->account_checkpoint_cb) {
865 p->ofhooks->account_checkpoint_cb(p->aux);
870 netflow_run(p->netflow);
876 struct revalidate_cbdata {
877 struct ofproto *ofproto;
878 bool revalidate_all; /* Revalidate all exact-match rules? */
879 bool revalidate_subrules; /* Revalidate all exact-match subrules? */
880 struct tag_set revalidate_set; /* Set of tags to revalidate. */
884 ofproto_run2(struct ofproto *p, bool revalidate_all)
886 if (p->need_revalidate || revalidate_all
887 || !tag_set_is_empty(&p->revalidate_set)) {
888 struct revalidate_cbdata cbdata;
890 cbdata.revalidate_all = revalidate_all;
891 cbdata.revalidate_subrules = p->need_revalidate;
892 cbdata.revalidate_set = p->revalidate_set;
893 tag_set_init(&p->revalidate_set);
894 COVERAGE_INC(ofproto_revalidate);
895 classifier_for_each(&p->cls, CLS_INC_EXACT, revalidate_cb, &cbdata);
896 p->need_revalidate = false;
903 ofproto_wait(struct ofproto *p)
905 struct ofconn *ofconn;
908 dpif_recv_wait(p->dpif);
909 dpif_port_poll_wait(p->dpif);
910 netdev_monitor_poll_wait(p->netdev_monitor);
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(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 netdev_monitor_add(p->netdev_monitor, ofport->netdev);
1193 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no),
1195 shash_add(&p->port_by_name, (char *) ofport->opp.name, ofport);
1199 ofport_remove(struct ofproto *p, struct ofport *ofport)
1201 netdev_monitor_remove(p->netdev_monitor, ofport->netdev);
1202 port_array_set(&p->ports, ofp_port_to_odp_port(ofport->opp.port_no), NULL);
1203 shash_delete(&p->port_by_name,
1204 shash_find(&p->port_by_name, (char *) ofport->opp.name));
1208 ofport_free(struct ofport *ofport)
1211 netdev_close(ofport->netdev);
1217 update_port(struct ofproto *p, const char *devname)
1219 struct odp_port odp_port;
1220 struct ofport *ofport;
1223 COVERAGE_INC(ofproto_update_port);
1224 ofport = shash_find_data(&p->port_by_name, devname);
1225 error = dpif_port_query_by_name(p->dpif, devname, &odp_port);
1229 if (!ofport_conflicts(p, &odp_port)) {
1230 ofport = make_ofport(&odp_port);
1232 ofport_install(p, ofport);
1233 send_port_status(p, ofport, OFPPR_ADD);
1237 /* Modified port. */
1238 struct ofport *new_ofport = make_ofport(&odp_port);
1243 new_ofport->opp.config &= OFPPC_PORT_DOWN;
1244 new_ofport->opp.config |= ofport->opp.config & ~OFPPC_PORT_DOWN;
1245 if (ofport_equal(ofport, new_ofport)) {
1246 /* False alarm--no change. */
1247 ofport_free(new_ofport);
1249 ofport_remove(p, ofport);
1250 ofport_install(p, new_ofport);
1251 ofport_free(ofport);
1252 send_port_status(p, new_ofport, OFPPR_MODIFY);
1255 } else if (error == ENOENT || error == ENODEV) {
1258 send_port_status(p, ofport, OFPPR_DELETE);
1259 ofport_remove(p, ofport);
1260 ofport_free(ofport);
1263 VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error "
1264 "%s", strerror(error));
1267 refresh_port_groups(p);
1271 init_ports(struct ofproto *p)
1273 struct odp_port *ports;
1278 error = dpif_port_list(p->dpif, &ports, &n_ports);
1283 for (i = 0; i < n_ports; i++) {
1284 const struct odp_port *odp_port = &ports[i];
1285 if (!ofport_conflicts(p, odp_port)) {
1286 struct ofport *ofport = make_ofport(odp_port);
1288 ofport_install(p, ofport);
1293 refresh_port_groups(p);
1297 static struct ofconn *
1298 ofconn_create(struct ofproto *p, struct rconn *rconn)
1300 struct ofconn *ofconn = xmalloc(sizeof *ofconn);
1301 list_push_back(&p->all_conns, &ofconn->node);
1302 ofconn->rconn = rconn;
1303 ofconn->pktbuf = NULL;
1304 ofconn->send_flow_exp = false;
1305 ofconn->miss_send_len = 0;
1306 ofconn->packet_in_counter = rconn_packet_counter_create ();
1307 ofconn->reply_counter = rconn_packet_counter_create ();
1312 ofconn_destroy(struct ofconn *ofconn, struct ofproto *p)
1315 executer_rconn_closing(p->executer, ofconn->rconn);
1318 list_remove(&ofconn->node);
1319 rconn_destroy(ofconn->rconn);
1320 rconn_packet_counter_destroy(ofconn->packet_in_counter);
1321 rconn_packet_counter_destroy(ofconn->reply_counter);
1322 pktbuf_destroy(ofconn->pktbuf);
1327 ofconn_run(struct ofconn *ofconn, struct ofproto *p)
1331 rconn_run(ofconn->rconn);
1333 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1334 /* Limit the number of iterations to prevent other tasks from
1336 for (iteration = 0; iteration < 50; iteration++) {
1337 struct ofpbuf *of_msg = rconn_recv(ofconn->rconn);
1341 handle_openflow(ofconn, p, of_msg);
1342 ofpbuf_delete(of_msg);
1346 if (ofconn != p->controller && !rconn_is_alive(ofconn->rconn)) {
1347 ofconn_destroy(ofconn, p);
1352 ofconn_wait(struct ofconn *ofconn)
1354 rconn_run_wait(ofconn->rconn);
1355 if (rconn_packet_counter_read (ofconn->reply_counter) < OFCONN_REPLY_MAX) {
1356 rconn_recv_wait(ofconn->rconn);
1358 COVERAGE_INC(ofproto_ofconn_stuck);
1362 /* Caller is responsible for initializing the 'cr' member of the returned
1364 static struct rule *
1365 rule_create(struct rule *super,
1366 const union ofp_action *actions, size_t n_actions,
1367 uint16_t idle_timeout, uint16_t hard_timeout)
1369 struct rule *rule = xcalloc(1, sizeof *rule);
1370 rule->idle_timeout = idle_timeout;
1371 rule->hard_timeout = hard_timeout;
1372 rule->used = rule->created = time_msec();
1373 rule->super = super;
1375 list_push_back(&super->list, &rule->list);
1377 list_init(&rule->list);
1379 rule->n_actions = n_actions;
1380 rule->actions = xmemdup(actions, n_actions * sizeof *actions);
1384 static struct rule *
1385 rule_from_cls_rule(const struct cls_rule *cls_rule)
1387 return cls_rule ? CONTAINER_OF(cls_rule, struct rule, cr) : NULL;
1391 rule_free(struct rule *rule)
1393 free(rule->actions);
1394 free(rule->odp_actions);
1398 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1399 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1400 * through all of its subrules and revalidates them, destroying any that no
1401 * longer has a super-rule (which is probably all of them).
1403 * Before calling this function, the caller must make have removed 'rule' from
1404 * the classifier. If 'rule' is an exact-match rule, the caller is also
1405 * responsible for ensuring that it has been uninstalled from the datapath. */
1407 rule_destroy(struct ofproto *ofproto, struct rule *rule)
1410 struct rule *subrule, *next;
1411 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
1412 revalidate_rule(ofproto, subrule);
1415 list_remove(&rule->list);
1421 rule_has_out_port(const struct rule *rule, uint16_t out_port)
1423 const union ofp_action *oa;
1424 struct actions_iterator i;
1426 if (out_port == htons(OFPP_NONE)) {
1429 for (oa = actions_first(&i, rule->actions, rule->n_actions); oa;
1430 oa = actions_next(&i)) {
1431 if (oa->type == htons(OFPAT_OUTPUT) && oa->output.port == out_port) {
1438 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1439 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1441 * The flow that 'packet' actually contains does not need to actually match
1442 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1443 * the packet and byte counters for 'rule' will be credited for the packet sent
1444 * out whether or not the packet actually matches 'rule'.
1446 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1447 * the caller must already have accurately composed ODP actions for it given
1448 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1449 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1450 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1451 * actions and apply them to 'packet'. */
1453 rule_execute(struct ofproto *ofproto, struct rule *rule,
1454 struct ofpbuf *packet, const flow_t *flow)
1456 const union odp_action *actions;
1458 struct odp_actions a;
1460 /* Grab or compose the ODP actions.
1462 * The special case for an exact-match 'rule' where 'flow' is not the
1463 * rule's flow is important to avoid, e.g., sending a packet out its input
1464 * port simply because the ODP actions were composed for the wrong
1466 if (rule->cr.wc.wildcards || !flow_equal(flow, &rule->cr.flow)) {
1467 struct rule *super = rule->super ? rule->super : rule;
1468 if (xlate_actions(super->actions, super->n_actions, flow, ofproto,
1469 packet, &a, NULL, 0)) {
1472 actions = a.actions;
1473 n_actions = a.n_actions;
1475 actions = rule->odp_actions;
1476 n_actions = rule->n_odp_actions;
1479 /* Execute the ODP actions. */
1480 if (!dpif_execute(ofproto->dpif, flow->in_port,
1481 actions, n_actions, packet)) {
1482 struct odp_flow_stats stats;
1483 flow_extract_stats(flow, packet, &stats);
1484 update_stats(rule, &stats);
1485 rule->used = time_msec();
1490 rule_insert(struct ofproto *p, struct rule *rule, struct ofpbuf *packet,
1493 struct rule *displaced_rule;
1495 /* Insert the rule in the classifier. */
1496 displaced_rule = rule_from_cls_rule(classifier_insert(&p->cls, &rule->cr));
1497 if (!rule->cr.wc.wildcards) {
1498 rule_make_actions(p, rule, packet);
1501 /* Send the packet and credit it to the rule. */
1504 flow_extract(packet, in_port, &flow);
1505 rule_execute(p, rule, packet, &flow);
1508 /* Install the rule in the datapath only after sending the packet, to
1509 * avoid packet reordering. */
1510 if (rule->cr.wc.wildcards) {
1511 COVERAGE_INC(ofproto_add_wc_flow);
1512 p->need_revalidate = true;
1514 rule_install(p, rule, displaced_rule);
1517 /* Free the rule that was displaced, if any. */
1518 if (displaced_rule) {
1519 rule_destroy(p, displaced_rule);
1523 static struct rule *
1524 rule_create_subrule(struct ofproto *ofproto, struct rule *rule,
1527 struct rule *subrule = rule_create(rule, NULL, 0,
1528 rule->idle_timeout, rule->hard_timeout);
1529 COVERAGE_INC(ofproto_subrule_create);
1530 cls_rule_from_flow(&subrule->cr, flow, 0,
1531 (rule->cr.priority <= UINT16_MAX ? UINT16_MAX
1532 : rule->cr.priority));
1533 classifier_insert_exact(&ofproto->cls, &subrule->cr);
1539 rule_remove(struct ofproto *ofproto, struct rule *rule)
1541 if (rule->cr.wc.wildcards) {
1542 COVERAGE_INC(ofproto_del_wc_flow);
1543 ofproto->need_revalidate = true;
1545 rule_uninstall(ofproto, rule);
1547 classifier_remove(&ofproto->cls, &rule->cr);
1548 rule_destroy(ofproto, rule);
1551 /* Returns true if the actions changed, false otherwise. */
1553 rule_make_actions(struct ofproto *p, struct rule *rule,
1554 const struct ofpbuf *packet)
1556 const struct rule *super;
1557 struct odp_actions a;
1560 assert(!rule->cr.wc.wildcards);
1562 super = rule->super ? rule->super : rule;
1564 xlate_actions(super->actions, super->n_actions, &rule->cr.flow, p,
1565 packet, &a, &rule->tags, &rule->may_install);
1567 actions_len = a.n_actions * sizeof *a.actions;
1568 if (rule->n_odp_actions != a.n_actions
1569 || memcmp(rule->odp_actions, a.actions, actions_len)) {
1570 COVERAGE_INC(ofproto_odp_unchanged);
1571 free(rule->odp_actions);
1572 rule->n_odp_actions = a.n_actions;
1573 rule->odp_actions = xmemdup(a.actions, actions_len);
1581 do_put_flow(struct ofproto *ofproto, struct rule *rule, int flags,
1582 struct odp_flow_put *put)
1584 memset(&put->flow.stats, 0, sizeof put->flow.stats);
1585 put->flow.key = rule->cr.flow;
1586 put->flow.actions = rule->odp_actions;
1587 put->flow.n_actions = rule->n_odp_actions;
1589 return dpif_flow_put(ofproto->dpif, put);
1593 rule_install(struct ofproto *p, struct rule *rule, struct rule *displaced_rule)
1595 assert(!rule->cr.wc.wildcards);
1597 if (rule->may_install) {
1598 struct odp_flow_put put;
1599 if (!do_put_flow(p, rule,
1600 ODPPF_CREATE | ODPPF_MODIFY | ODPPF_ZERO_STATS,
1602 rule->installed = true;
1603 if (displaced_rule) {
1604 update_stats(rule, &put.flow.stats);
1605 rule_post_uninstall(p, displaced_rule);
1608 } else if (displaced_rule) {
1609 rule_uninstall(p, displaced_rule);
1614 rule_reinstall(struct ofproto *ofproto, struct rule *rule)
1616 if (rule->installed) {
1617 struct odp_flow_put put;
1618 COVERAGE_INC(ofproto_dp_missed);
1619 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1621 rule_install(ofproto, rule, NULL);
1626 rule_update_actions(struct ofproto *ofproto, struct rule *rule)
1628 bool actions_changed = rule_make_actions(ofproto, rule, NULL);
1629 if (rule->may_install) {
1630 if (rule->installed) {
1631 if (actions_changed) {
1632 /* XXX should really do rule_post_uninstall() for the *old* set
1633 * of actions, and distinguish the old stats from the new. */
1634 struct odp_flow_put put;
1635 do_put_flow(ofproto, rule, ODPPF_CREATE | ODPPF_MODIFY, &put);
1638 rule_install(ofproto, rule, NULL);
1641 rule_uninstall(ofproto, rule);
1646 rule_account(struct ofproto *ofproto, struct rule *rule, uint64_t extra_bytes)
1648 uint64_t total_bytes = rule->byte_count + extra_bytes;
1650 if (ofproto->ofhooks->account_flow_cb
1651 && total_bytes > rule->accounted_bytes)
1653 ofproto->ofhooks->account_flow_cb(
1654 &rule->cr.flow, rule->odp_actions, rule->n_odp_actions,
1655 total_bytes - rule->accounted_bytes, ofproto->aux);
1656 rule->accounted_bytes = total_bytes;
1661 rule_uninstall(struct ofproto *p, struct rule *rule)
1663 assert(!rule->cr.wc.wildcards);
1664 if (rule->installed) {
1665 struct odp_flow odp_flow;
1667 odp_flow.key = rule->cr.flow;
1668 odp_flow.actions = NULL;
1669 odp_flow.n_actions = 0;
1670 if (!dpif_flow_del(p->dpif, &odp_flow)) {
1671 update_stats(rule, &odp_flow.stats);
1673 rule->installed = false;
1675 rule_post_uninstall(p, rule);
1680 rule_post_uninstall(struct ofproto *ofproto, struct rule *rule)
1682 struct rule *super = rule->super;
1684 rule_account(ofproto, rule, 0);
1685 if (ofproto->netflow) {
1686 struct ofexpired expired;
1687 expired.flow = rule->cr.flow;
1688 expired.packet_count = rule->packet_count;
1689 expired.byte_count = rule->byte_count;
1690 expired.used = rule->used;
1691 expired.created = rule->created;
1692 expired.tcp_flags = rule->tcp_flags;
1693 expired.ip_tos = rule->ip_tos;
1694 netflow_expire(ofproto->netflow, &expired);
1697 super->packet_count += rule->packet_count;
1698 super->byte_count += rule->byte_count;
1699 super->tcp_flags |= rule->tcp_flags;
1700 if (rule->packet_count) {
1701 super->ip_tos = rule->ip_tos;
1705 /* Reset counters to prevent double counting if the rule ever gets
1707 rule->packet_count = 0;
1708 rule->byte_count = 0;
1709 rule->accounted_bytes = 0;
1710 rule->tcp_flags = 0;
1715 queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
1716 struct rconn_packet_counter *counter)
1718 update_openflow_length(msg);
1719 if (rconn_send(ofconn->rconn, msg, counter)) {
1725 send_error(const struct ofconn *ofconn, const struct ofp_header *oh,
1726 int error, const void *data, size_t len)
1729 struct ofp_error_msg *oem;
1731 if (!(error >> 16)) {
1732 VLOG_WARN_RL(&rl, "not sending bad error code %d to controller",
1737 COVERAGE_INC(ofproto_error);
1738 oem = make_openflow_xid(len + sizeof *oem, OFPT_ERROR,
1739 oh ? oh->xid : 0, &buf);
1740 oem->type = htons((unsigned int) error >> 16);
1741 oem->code = htons(error & 0xffff);
1742 memcpy(oem->data, data, len);
1743 queue_tx(buf, ofconn, ofconn->reply_counter);
1747 send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
1750 size_t oh_length = ntohs(oh->length);
1751 send_error(ofconn, oh, error, oh, MIN(oh_length, 64));
1755 hton_ofp_phy_port(struct ofp_phy_port *opp)
1757 opp->port_no = htons(opp->port_no);
1758 opp->config = htonl(opp->config);
1759 opp->state = htonl(opp->state);
1760 opp->curr = htonl(opp->curr);
1761 opp->advertised = htonl(opp->advertised);
1762 opp->supported = htonl(opp->supported);
1763 opp->peer = htonl(opp->peer);
1767 handle_echo_request(struct ofconn *ofconn, struct ofp_header *oh)
1769 struct ofp_header *rq = oh;
1770 queue_tx(make_echo_reply(rq), ofconn, ofconn->reply_counter);
1775 handle_features_request(struct ofproto *p, struct ofconn *ofconn,
1776 struct ofp_header *oh)
1778 struct ofp_switch_features *osf;
1780 unsigned int port_no;
1781 struct ofport *port;
1783 osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
1784 osf->datapath_id = htonll(p->datapath_id);
1785 osf->n_buffers = htonl(pktbuf_capacity());
1787 osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
1788 OFPC_PORT_STATS | OFPC_MULTI_PHY_TX);
1789 osf->actions = htonl((1u << OFPAT_OUTPUT) |
1790 (1u << OFPAT_SET_VLAN_VID) |
1791 (1u << OFPAT_SET_VLAN_PCP) |
1792 (1u << OFPAT_STRIP_VLAN) |
1793 (1u << OFPAT_SET_DL_SRC) |
1794 (1u << OFPAT_SET_DL_DST) |
1795 (1u << OFPAT_SET_NW_SRC) |
1796 (1u << OFPAT_SET_NW_DST) |
1797 (1u << OFPAT_SET_TP_SRC) |
1798 (1u << OFPAT_SET_TP_DST));
1800 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
1801 hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
1804 queue_tx(buf, ofconn, ofconn->reply_counter);
1809 handle_get_config_request(struct ofproto *p, struct ofconn *ofconn,
1810 struct ofp_header *oh)
1813 struct ofp_switch_config *osc;
1817 /* Figure out flags. */
1818 dpif_get_drop_frags(p->dpif, &drop_frags);
1819 flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
1820 if (ofconn->send_flow_exp) {
1821 flags |= OFPC_SEND_FLOW_EXP;
1825 osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
1826 osc->flags = htons(flags);
1827 osc->miss_send_len = htons(ofconn->miss_send_len);
1828 queue_tx(buf, ofconn, ofconn->reply_counter);
1834 handle_set_config(struct ofproto *p, struct ofconn *ofconn,
1835 struct ofp_switch_config *osc)
1840 error = check_ofp_message(&osc->header, OFPT_SET_CONFIG, sizeof *osc);
1844 flags = ntohs(osc->flags);
1846 ofconn->send_flow_exp = (flags & OFPC_SEND_FLOW_EXP) != 0;
1848 if (ofconn == p->controller) {
1849 switch (flags & OFPC_FRAG_MASK) {
1850 case OFPC_FRAG_NORMAL:
1851 dpif_set_drop_frags(p->dpif, false);
1853 case OFPC_FRAG_DROP:
1854 dpif_set_drop_frags(p->dpif, true);
1857 VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
1863 if ((ntohs(osc->miss_send_len) != 0) != (ofconn->miss_send_len != 0)) {
1864 if (ntohs(osc->miss_send_len) != 0) {
1865 ofconn->pktbuf = pktbuf_create();
1867 pktbuf_destroy(ofconn->pktbuf);
1871 ofconn->miss_send_len = ntohs(osc->miss_send_len);
1877 add_output_group_action(struct odp_actions *actions, uint16_t group)
1879 odp_actions_add(actions, ODPAT_OUTPUT_GROUP)->output_group.group = group;
1883 add_controller_action(struct odp_actions *actions,
1884 const struct ofp_action_output *oao)
1886 union odp_action *a = odp_actions_add(actions, ODPAT_CONTROLLER);
1887 a->controller.arg = oao->max_len ? ntohs(oao->max_len) : UINT32_MAX;
1890 struct action_xlate_ctx {
1892 const flow_t *flow; /* Flow to which these actions correspond. */
1893 int recurse; /* Recursion level, via xlate_table_action. */
1894 struct ofproto *ofproto;
1895 const struct ofpbuf *packet; /* The packet corresponding to 'flow', or a
1896 * null pointer if we are revalidating
1897 * without a packet to refer to. */
1900 struct odp_actions *out; /* Datapath actions. */
1901 tag_type *tags; /* Tags associated with OFPP_NORMAL actions. */
1902 bool may_setup_flow; /* True ordinarily; false if the actions must
1903 * be reassessed for every packet. */
1906 static void do_xlate_actions(const union ofp_action *in, size_t n_in,
1907 struct action_xlate_ctx *ctx);
1910 add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
1912 const struct ofport *ofport = port_array_get(&ctx->ofproto->ports, port);
1913 if (!ofport || !(ofport->opp.config & OFPPC_NO_FWD)) {
1914 odp_actions_add(ctx->out, ODPAT_OUTPUT)->output.port = port;
1918 static struct rule *
1919 lookup_valid_rule(struct ofproto *ofproto, const flow_t *flow)
1922 rule = rule_from_cls_rule(classifier_lookup(&ofproto->cls, flow));
1924 /* The rule we found might not be valid, since we could be in need of
1925 * revalidation. If it is not valid, don't return it. */
1928 && ofproto->need_revalidate
1929 && !revalidate_rule(ofproto, rule)) {
1930 COVERAGE_INC(ofproto_invalidated);
1938 xlate_table_action(struct action_xlate_ctx *ctx, uint16_t in_port)
1940 if (!ctx->recurse) {
1945 flow.in_port = in_port;
1947 rule = lookup_valid_rule(ctx->ofproto, &flow);
1954 do_xlate_actions(rule->actions, rule->n_actions, ctx);
1961 xlate_output_action(struct action_xlate_ctx *ctx,
1962 const struct ofp_action_output *oao)
1966 switch (ntohs(oao->port)) {
1968 add_output_action(ctx, ctx->flow->in_port);
1971 xlate_table_action(ctx, ctx->flow->in_port);
1974 if (!ctx->ofproto->ofhooks->normal_cb(ctx->flow, ctx->packet,
1975 ctx->out, ctx->tags,
1976 ctx->ofproto->aux)) {
1977 COVERAGE_INC(ofproto_uninstallable);
1978 ctx->may_setup_flow = false;
1982 add_output_group_action(ctx->out, DP_GROUP_FLOOD);
1985 add_output_group_action(ctx->out, DP_GROUP_ALL);
1987 case OFPP_CONTROLLER:
1988 add_controller_action(ctx->out, oao);
1991 add_output_action(ctx, ODPP_LOCAL);
1994 odp_port = ofp_port_to_odp_port(ntohs(oao->port));
1995 if (odp_port != ctx->flow->in_port) {
1996 add_output_action(ctx, odp_port);
2003 xlate_nicira_action(struct action_xlate_ctx *ctx,
2004 const struct nx_action_header *nah)
2006 const struct nx_action_resubmit *nar;
2007 int subtype = ntohs(nah->subtype);
2009 assert(nah->vendor == htonl(NX_VENDOR_ID));
2011 case NXAST_RESUBMIT:
2012 nar = (const struct nx_action_resubmit *) nah;
2013 xlate_table_action(ctx, ofp_port_to_odp_port(ntohs(nar->in_port)));
2017 VLOG_DBG_RL(&rl, "unknown Nicira action type %"PRIu16, subtype);
2023 do_xlate_actions(const union ofp_action *in, size_t n_in,
2024 struct action_xlate_ctx *ctx)
2026 struct actions_iterator iter;
2027 const union ofp_action *ia;
2028 const struct ofport *port;
2030 port = port_array_get(&ctx->ofproto->ports, ctx->flow->in_port);
2031 if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
2032 port->opp.config & (eth_addr_equals(ctx->flow->dl_dst, stp_eth_addr)
2033 ? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
2034 /* Drop this flow. */
2038 for (ia = actions_first(&iter, in, n_in); ia; ia = actions_next(&iter)) {
2039 uint16_t type = ntohs(ia->type);
2040 union odp_action *oa;
2044 xlate_output_action(ctx, &ia->output);
2047 case OFPAT_SET_VLAN_VID:
2048 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_VID);
2049 oa->vlan_vid.vlan_vid = ia->vlan_vid.vlan_vid;
2052 case OFPAT_SET_VLAN_PCP:
2053 oa = odp_actions_add(ctx->out, ODPAT_SET_VLAN_PCP);
2054 oa->vlan_pcp.vlan_pcp = ia->vlan_pcp.vlan_pcp;
2057 case OFPAT_STRIP_VLAN:
2058 odp_actions_add(ctx->out, ODPAT_STRIP_VLAN);
2061 case OFPAT_SET_DL_SRC:
2062 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_SRC);
2063 memcpy(oa->dl_addr.dl_addr,
2064 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2067 case OFPAT_SET_DL_DST:
2068 oa = odp_actions_add(ctx->out, ODPAT_SET_DL_DST);
2069 memcpy(oa->dl_addr.dl_addr,
2070 ((struct ofp_action_dl_addr *) ia)->dl_addr, ETH_ADDR_LEN);
2073 case OFPAT_SET_NW_SRC:
2074 oa = odp_actions_add(ctx->out, ODPAT_SET_NW_SRC);
2075 oa->nw_addr.nw_addr = ia->nw_addr.nw_addr;
2078 case OFPAT_SET_TP_SRC:
2079 oa = odp_actions_add(ctx->out, ODPAT_SET_TP_SRC);
2080 oa->tp_port.tp_port = ia->tp_port.tp_port;
2084 xlate_nicira_action(ctx, (const struct nx_action_header *) ia);
2088 VLOG_DBG_RL(&rl, "unknown action type %"PRIu16, type);
2095 xlate_actions(const union ofp_action *in, size_t n_in,
2096 const flow_t *flow, struct ofproto *ofproto,
2097 const struct ofpbuf *packet,
2098 struct odp_actions *out, tag_type *tags, bool *may_setup_flow)
2100 tag_type no_tags = 0;
2101 struct action_xlate_ctx ctx;
2102 COVERAGE_INC(ofproto_ofp2odp);
2103 odp_actions_init(out);
2106 ctx.ofproto = ofproto;
2107 ctx.packet = packet;
2109 ctx.tags = tags ? tags : &no_tags;
2110 ctx.may_setup_flow = true;
2111 do_xlate_actions(in, n_in, &ctx);
2112 if (may_setup_flow) {
2113 *may_setup_flow = ctx.may_setup_flow;
2115 if (odp_actions_overflow(out)) {
2116 odp_actions_init(out);
2117 return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_TOO_MANY);
2123 handle_packet_out(struct ofproto *p, struct ofconn *ofconn,
2124 struct ofp_header *oh)
2126 struct ofp_packet_out *opo;
2127 struct ofpbuf payload, *buffer;
2128 struct odp_actions actions;
2134 error = check_ofp_packet_out(oh, &payload, &n_actions, p->max_ports);
2138 opo = (struct ofp_packet_out *) oh;
2140 COVERAGE_INC(ofproto_packet_out);
2141 if (opo->buffer_id != htonl(UINT32_MAX)) {
2142 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(opo->buffer_id),
2152 flow_extract(&payload, ofp_port_to_odp_port(ntohs(opo->in_port)), &flow);
2153 error = xlate_actions((const union ofp_action *) opo->actions, n_actions,
2154 &flow, p, &payload, &actions, NULL, NULL);
2159 dpif_execute(p->dpif, flow.in_port, actions.actions, actions.n_actions,
2161 ofpbuf_delete(buffer);
2167 update_port_config(struct ofproto *p, struct ofport *port,
2168 uint32_t config, uint32_t mask)
2170 mask &= config ^ port->opp.config;
2171 if (mask & OFPPC_PORT_DOWN) {
2172 if (config & OFPPC_PORT_DOWN) {
2173 netdev_turn_flags_off(port->netdev, NETDEV_UP, true);
2175 netdev_turn_flags_on(port->netdev, NETDEV_UP, true);
2178 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2179 if (mask & REVALIDATE_BITS) {
2180 COVERAGE_INC(ofproto_costly_flags);
2181 port->opp.config ^= mask & REVALIDATE_BITS;
2182 p->need_revalidate = true;
2184 #undef REVALIDATE_BITS
2185 if (mask & OFPPC_NO_FLOOD) {
2186 port->opp.config ^= OFPPC_NO_FLOOD;
2187 refresh_port_group(p, DP_GROUP_FLOOD);
2189 if (mask & OFPPC_NO_PACKET_IN) {
2190 port->opp.config ^= OFPPC_NO_PACKET_IN;
2195 handle_port_mod(struct ofproto *p, struct ofp_header *oh)
2197 const struct ofp_port_mod *opm;
2198 struct ofport *port;
2201 error = check_ofp_message(oh, OFPT_PORT_MOD, sizeof *opm);
2205 opm = (struct ofp_port_mod *) oh;
2207 port = port_array_get(&p->ports,
2208 ofp_port_to_odp_port(ntohs(opm->port_no)));
2210 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT);
2211 } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) {
2212 return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR);
2214 update_port_config(p, port, ntohl(opm->config), ntohl(opm->mask));
2215 if (opm->advertise) {
2216 netdev_set_advertisements(port->netdev, ntohl(opm->advertise));
2222 static struct ofpbuf *
2223 make_stats_reply(uint32_t xid, uint16_t type, size_t body_len)
2225 struct ofp_stats_reply *osr;
2228 msg = ofpbuf_new(MIN(sizeof *osr + body_len, UINT16_MAX));
2229 osr = put_openflow_xid(sizeof *osr, OFPT_STATS_REPLY, xid, msg);
2231 osr->flags = htons(0);
2235 static struct ofpbuf *
2236 start_stats_reply(const struct ofp_stats_request *request, size_t body_len)
2238 return make_stats_reply(request->header.xid, request->type, body_len);
2242 append_stats_reply(size_t nbytes, struct ofconn *ofconn, struct ofpbuf **msgp)
2244 struct ofpbuf *msg = *msgp;
2245 assert(nbytes <= UINT16_MAX - sizeof(struct ofp_stats_reply));
2246 if (nbytes + msg->size > UINT16_MAX) {
2247 struct ofp_stats_reply *reply = msg->data;
2248 reply->flags = htons(OFPSF_REPLY_MORE);
2249 *msgp = make_stats_reply(reply->header.xid, reply->type, nbytes);
2250 queue_tx(msg, ofconn, ofconn->reply_counter);
2252 return ofpbuf_put_uninit(*msgp, nbytes);
2256 handle_desc_stats_request(struct ofproto *p, struct ofconn *ofconn,
2257 struct ofp_stats_request *request)
2259 struct ofp_desc_stats *ods;
2262 msg = start_stats_reply(request, sizeof *ods);
2263 ods = append_stats_reply(sizeof *ods, ofconn, &msg);
2264 strncpy(ods->mfr_desc, p->manufacturer, sizeof ods->mfr_desc);
2265 strncpy(ods->hw_desc, p->hardware, sizeof ods->hw_desc);
2266 strncpy(ods->sw_desc, p->software, sizeof ods->sw_desc);
2267 strncpy(ods->serial_num, p->serial, sizeof ods->serial_num);
2268 queue_tx(msg, ofconn, ofconn->reply_counter);
2274 count_subrules(struct cls_rule *cls_rule, void *n_subrules_)
2276 struct rule *rule = rule_from_cls_rule(cls_rule);
2277 int *n_subrules = n_subrules_;
2285 handle_table_stats_request(struct ofproto *p, struct ofconn *ofconn,
2286 struct ofp_stats_request *request)
2288 struct ofp_table_stats *ots;
2290 struct odp_stats dpstats;
2291 int n_exact, n_subrules, n_wild;
2293 msg = start_stats_reply(request, sizeof *ots * 2);
2295 /* Count rules of various kinds. */
2297 classifier_for_each(&p->cls, CLS_INC_EXACT, count_subrules, &n_subrules);
2298 n_exact = classifier_count_exact(&p->cls) - n_subrules;
2299 n_wild = classifier_count(&p->cls) - classifier_count_exact(&p->cls);
2302 dpif_get_dp_stats(p->dpif, &dpstats);
2303 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2304 memset(ots, 0, sizeof *ots);
2305 ots->table_id = TABLEID_HASH;
2306 strcpy(ots->name, "hash");
2307 ots->wildcards = htonl(0);
2308 ots->max_entries = htonl(dpstats.max_capacity);
2309 ots->active_count = htonl(n_exact);
2310 ots->lookup_count = htonll(dpstats.n_frags + dpstats.n_hit +
2312 ots->matched_count = htonll(dpstats.n_hit); /* XXX */
2314 /* Classifier table. */
2315 ots = append_stats_reply(sizeof *ots, ofconn, &msg);
2316 memset(ots, 0, sizeof *ots);
2317 ots->table_id = TABLEID_CLASSIFIER;
2318 strcpy(ots->name, "classifier");
2319 ots->wildcards = htonl(OFPFW_ALL);
2320 ots->max_entries = htonl(65536);
2321 ots->active_count = htonl(n_wild);
2322 ots->lookup_count = htonll(0); /* XXX */
2323 ots->matched_count = htonll(0); /* XXX */
2325 queue_tx(msg, ofconn, ofconn->reply_counter);
2330 handle_port_stats_request(struct ofproto *p, struct ofconn *ofconn,
2331 struct ofp_stats_request *request)
2333 struct ofp_port_stats *ops;
2335 struct ofport *port;
2336 unsigned int port_no;
2338 msg = start_stats_reply(request, sizeof *ops * 16);
2339 PORT_ARRAY_FOR_EACH (port, &p->ports, port_no) {
2340 struct netdev_stats stats;
2342 /* Intentionally ignore return value, since errors will set 'stats' to
2343 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2345 netdev_get_stats(port->netdev, &stats);
2347 ops = append_stats_reply(sizeof *ops, ofconn, &msg);
2348 ops->port_no = htons(odp_port_to_ofp_port(port_no));
2349 memset(ops->pad, 0, sizeof ops->pad);
2350 ops->rx_packets = htonll(stats.rx_packets);
2351 ops->tx_packets = htonll(stats.tx_packets);
2352 ops->rx_bytes = htonll(stats.rx_bytes);
2353 ops->tx_bytes = htonll(stats.tx_bytes);
2354 ops->rx_dropped = htonll(stats.rx_dropped);
2355 ops->tx_dropped = htonll(stats.tx_dropped);
2356 ops->rx_errors = htonll(stats.rx_errors);
2357 ops->tx_errors = htonll(stats.tx_errors);
2358 ops->rx_frame_err = htonll(stats.rx_frame_errors);
2359 ops->rx_over_err = htonll(stats.rx_over_errors);
2360 ops->rx_crc_err = htonll(stats.rx_crc_errors);
2361 ops->collisions = htonll(stats.collisions);
2364 queue_tx(msg, ofconn, ofconn->reply_counter);
2368 struct flow_stats_cbdata {
2369 struct ofproto *ofproto;
2370 struct ofconn *ofconn;
2376 query_stats(struct ofproto *p, struct rule *rule,
2377 uint64_t *packet_countp, uint64_t *byte_countp)
2379 uint64_t packet_count, byte_count;
2380 struct rule *subrule;
2381 struct odp_flow *odp_flows;
2384 n_odp_flows = rule->cr.wc.wildcards ? list_size(&rule->list) : 1;
2385 odp_flows = xcalloc(1, n_odp_flows * sizeof *odp_flows);
2386 if (rule->cr.wc.wildcards) {
2388 LIST_FOR_EACH (subrule, struct rule, list, &rule->list) {
2389 odp_flows[i++].key = subrule->cr.flow;
2392 odp_flows[0].key = rule->cr.flow;
2395 packet_count = rule->packet_count;
2396 byte_count = rule->byte_count;
2397 if (!dpif_flow_get_multiple(p->dpif, odp_flows, n_odp_flows)) {
2399 for (i = 0; i < n_odp_flows; i++) {
2400 struct odp_flow *odp_flow = &odp_flows[i];
2401 packet_count += odp_flow->stats.n_packets;
2402 byte_count += odp_flow->stats.n_bytes;
2407 *packet_countp = packet_count;
2408 *byte_countp = byte_count;
2412 flow_stats_cb(struct cls_rule *rule_, void *cbdata_)
2414 struct rule *rule = rule_from_cls_rule(rule_);
2415 struct flow_stats_cbdata *cbdata = cbdata_;
2416 struct ofp_flow_stats *ofs;
2417 uint64_t packet_count, byte_count;
2418 size_t act_len, len;
2420 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2424 act_len = sizeof *rule->actions * rule->n_actions;
2425 len = offsetof(struct ofp_flow_stats, actions) + act_len;
2427 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2429 ofs = append_stats_reply(len, cbdata->ofconn, &cbdata->msg);
2430 ofs->length = htons(len);
2431 ofs->table_id = rule->cr.wc.wildcards ? TABLEID_CLASSIFIER : TABLEID_HASH;
2433 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofs->match);
2434 ofs->duration = htonl((time_msec() - rule->created) / 1000);
2435 ofs->priority = htons(rule->cr.priority);
2436 ofs->idle_timeout = htons(rule->idle_timeout);
2437 ofs->hard_timeout = htons(rule->hard_timeout);
2438 memset(ofs->pad2, 0, sizeof ofs->pad2);
2439 ofs->packet_count = htonll(packet_count);
2440 ofs->byte_count = htonll(byte_count);
2441 memcpy(ofs->actions, rule->actions, act_len);
2445 table_id_to_include(uint8_t table_id)
2447 return (table_id == TABLEID_HASH ? CLS_INC_EXACT
2448 : table_id == TABLEID_CLASSIFIER ? CLS_INC_WILD
2449 : table_id == 0xff ? CLS_INC_ALL
2454 handle_flow_stats_request(struct ofproto *p, struct ofconn *ofconn,
2455 const struct ofp_stats_request *osr,
2458 struct ofp_flow_stats_request *fsr;
2459 struct flow_stats_cbdata cbdata;
2460 struct cls_rule target;
2462 if (arg_size != sizeof *fsr) {
2463 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2465 fsr = (struct ofp_flow_stats_request *) osr->body;
2467 COVERAGE_INC(ofproto_flows_req);
2469 cbdata.ofconn = ofconn;
2470 cbdata.out_port = fsr->out_port;
2471 cbdata.msg = start_stats_reply(osr, 1024);
2472 cls_rule_from_match(&target, &fsr->match, 0);
2473 classifier_for_each_match(&p->cls, &target,
2474 table_id_to_include(fsr->table_id),
2475 flow_stats_cb, &cbdata);
2476 queue_tx(cbdata.msg, ofconn, ofconn->reply_counter);
2480 struct aggregate_stats_cbdata {
2481 struct ofproto *ofproto;
2483 uint64_t packet_count;
2484 uint64_t byte_count;
2489 aggregate_stats_cb(struct cls_rule *rule_, void *cbdata_)
2491 struct rule *rule = rule_from_cls_rule(rule_);
2492 struct aggregate_stats_cbdata *cbdata = cbdata_;
2493 uint64_t packet_count, byte_count;
2495 if (rule_is_hidden(rule) || !rule_has_out_port(rule, cbdata->out_port)) {
2499 query_stats(cbdata->ofproto, rule, &packet_count, &byte_count);
2501 cbdata->packet_count += packet_count;
2502 cbdata->byte_count += byte_count;
2507 handle_aggregate_stats_request(struct ofproto *p, struct ofconn *ofconn,
2508 const struct ofp_stats_request *osr,
2511 struct ofp_aggregate_stats_request *asr;
2512 struct ofp_aggregate_stats_reply *reply;
2513 struct aggregate_stats_cbdata cbdata;
2514 struct cls_rule target;
2517 if (arg_size != sizeof *asr) {
2518 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2520 asr = (struct ofp_aggregate_stats_request *) osr->body;
2522 COVERAGE_INC(ofproto_agg_request);
2524 cbdata.out_port = asr->out_port;
2525 cbdata.packet_count = 0;
2526 cbdata.byte_count = 0;
2528 cls_rule_from_match(&target, &asr->match, 0);
2529 classifier_for_each_match(&p->cls, &target,
2530 table_id_to_include(asr->table_id),
2531 aggregate_stats_cb, &cbdata);
2533 msg = start_stats_reply(osr, sizeof *reply);
2534 reply = append_stats_reply(sizeof *reply, ofconn, &msg);
2535 reply->flow_count = htonl(cbdata.n_flows);
2536 reply->packet_count = htonll(cbdata.packet_count);
2537 reply->byte_count = htonll(cbdata.byte_count);
2538 queue_tx(msg, ofconn, ofconn->reply_counter);
2543 handle_stats_request(struct ofproto *p, struct ofconn *ofconn,
2544 struct ofp_header *oh)
2546 struct ofp_stats_request *osr;
2550 error = check_ofp_message_array(oh, OFPT_STATS_REQUEST, sizeof *osr,
2555 osr = (struct ofp_stats_request *) oh;
2557 switch (ntohs(osr->type)) {
2559 return handle_desc_stats_request(p, ofconn, osr);
2562 return handle_flow_stats_request(p, ofconn, osr, arg_size);
2564 case OFPST_AGGREGATE:
2565 return handle_aggregate_stats_request(p, ofconn, osr, arg_size);
2568 return handle_table_stats_request(p, ofconn, osr);
2571 return handle_port_stats_request(p, ofconn, osr);
2574 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2577 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT);
2581 static long long int
2582 msec_from_nsec(uint64_t sec, uint32_t nsec)
2584 return !sec ? 0 : sec * 1000 + nsec / 1000000;
2588 update_time(struct rule *rule, const struct odp_flow_stats *stats)
2590 long long int used = msec_from_nsec(stats->used_sec, stats->used_nsec);
2591 if (used > rule->used) {
2597 update_stats(struct rule *rule, const struct odp_flow_stats *stats)
2599 update_time(rule, stats);
2600 rule->packet_count += stats->n_packets;
2601 rule->byte_count += stats->n_bytes;
2602 rule->tcp_flags |= stats->tcp_flags;
2603 if (stats->n_packets) {
2604 rule->ip_tos = stats->ip_tos;
2609 add_flow(struct ofproto *p, struct ofconn *ofconn,
2610 struct ofp_flow_mod *ofm, size_t n_actions)
2612 struct ofpbuf *packet;
2617 rule = rule_create(NULL, (const union ofp_action *) ofm->actions,
2618 n_actions, ntohs(ofm->idle_timeout),
2619 ntohs(ofm->hard_timeout));
2620 cls_rule_from_match(&rule->cr, &ofm->match, ntohs(ofm->priority));
2624 if (ofm->buffer_id != htonl(UINT32_MAX)) {
2625 error = pktbuf_retrieve(ofconn->pktbuf, ntohl(ofm->buffer_id),
2629 rule_insert(p, rule, packet, in_port);
2630 ofpbuf_delete(packet);
2635 modify_flow(struct ofproto *p, const struct ofp_flow_mod *ofm,
2636 size_t n_actions, uint16_t command, struct rule *rule)
2638 if (rule_is_hidden(rule)) {
2642 if (command == OFPFC_DELETE) {
2643 rule_remove(p, rule);
2645 size_t actions_len = n_actions * sizeof *rule->actions;
2647 if (n_actions == rule->n_actions
2648 && !memcmp(ofm->actions, rule->actions, actions_len))
2653 free(rule->actions);
2654 rule->actions = xmemdup(ofm->actions, actions_len);
2655 rule->n_actions = n_actions;
2657 if (rule->cr.wc.wildcards) {
2658 COVERAGE_INC(ofproto_mod_wc_flow);
2659 p->need_revalidate = true;
2661 rule_update_actions(p, rule);
2669 modify_flows_strict(struct ofproto *p, const struct ofp_flow_mod *ofm,
2670 size_t n_actions, uint16_t command)
2676 flow_from_match(&flow, &wildcards, &ofm->match);
2677 rule = rule_from_cls_rule(classifier_find_rule_exactly(
2678 &p->cls, &flow, wildcards,
2679 ntohs(ofm->priority)));
2682 if (command == OFPFC_DELETE
2683 && ofm->out_port != htons(OFPP_NONE)
2684 && !rule_has_out_port(rule, ofm->out_port)) {
2688 modify_flow(p, ofm, n_actions, command, rule);
2693 struct modify_flows_cbdata {
2694 struct ofproto *ofproto;
2695 const struct ofp_flow_mod *ofm;
2702 modify_flows_cb(struct cls_rule *rule_, void *cbdata_)
2704 struct rule *rule = rule_from_cls_rule(rule_);
2705 struct modify_flows_cbdata *cbdata = cbdata_;
2707 if (cbdata->out_port != htons(OFPP_NONE)
2708 && !rule_has_out_port(rule, cbdata->out_port)) {
2712 modify_flow(cbdata->ofproto, cbdata->ofm, cbdata->n_actions,
2713 cbdata->command, rule);
2717 modify_flows_loose(struct ofproto *p, const struct ofp_flow_mod *ofm,
2718 size_t n_actions, uint16_t command)
2720 struct modify_flows_cbdata cbdata;
2721 struct cls_rule target;
2725 cbdata.out_port = (command == OFPFC_DELETE ? ofm->out_port
2726 : htons(OFPP_NONE));
2727 cbdata.n_actions = n_actions;
2728 cbdata.command = command;
2730 cls_rule_from_match(&target, &ofm->match, 0);
2732 classifier_for_each_match(&p->cls, &target, CLS_INC_ALL,
2733 modify_flows_cb, &cbdata);
2738 handle_flow_mod(struct ofproto *p, struct ofconn *ofconn,
2739 struct ofp_flow_mod *ofm)
2744 error = check_ofp_message_array(&ofm->header, OFPT_FLOW_MOD, sizeof *ofm,
2745 sizeof *ofm->actions, &n_actions);
2750 normalize_match(&ofm->match);
2751 if (!ofm->match.wildcards) {
2752 ofm->priority = htons(UINT16_MAX);
2755 error = validate_actions((const union ofp_action *) ofm->actions,
2756 n_actions, p->max_ports);
2761 switch (ntohs(ofm->command)) {
2763 return add_flow(p, ofconn, ofm, n_actions);
2766 return modify_flows_loose(p, ofm, n_actions, OFPFC_MODIFY);
2768 case OFPFC_MODIFY_STRICT:
2769 return modify_flows_strict(p, ofm, n_actions, OFPFC_MODIFY);
2772 return modify_flows_loose(p, ofm, n_actions, OFPFC_DELETE);
2774 case OFPFC_DELETE_STRICT:
2775 return modify_flows_strict(p, ofm, n_actions, OFPFC_DELETE);
2778 return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND);
2783 send_capability_reply(struct ofproto *p, struct ofconn *ofconn, uint32_t xid)
2785 struct ofmp_capability_reply *ocr;
2787 char capabilities[] = "com.nicira.mgmt.manager=false\n";
2789 ocr = make_openflow_xid(sizeof(*ocr), OFPT_VENDOR, xid, &b);
2790 ocr->header.header.vendor = htonl(NX_VENDOR_ID);
2791 ocr->header.header.subtype = htonl(NXT_MGMT);
2792 ocr->header.type = htons(OFMPT_CAPABILITY_REPLY);
2794 ocr->format = htonl(OFMPCOF_SIMPLE);
2795 ocr->mgmt_id = htonll(p->mgmt_id);
2797 ofpbuf_put(b, capabilities, strlen(capabilities));
2799 queue_tx(b, ofconn, ofconn->reply_counter);
2803 handle_ofmp(struct ofproto *p, struct ofconn *ofconn,
2804 struct ofmp_header *ofmph)
2806 size_t msg_len = ntohs(ofmph->header.header.length);
2807 if (msg_len < sizeof(*ofmph)) {
2808 VLOG_WARN_RL(&rl, "dropping short managment message: %d\n", msg_len);
2809 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2812 if (ofmph->type == htons(OFMPT_CAPABILITY_REQUEST)) {
2813 struct ofmp_capability_request *ofmpcr;
2815 if (msg_len < sizeof(struct ofmp_capability_request)) {
2816 VLOG_WARN_RL(&rl, "dropping short capability request: %d\n",
2818 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2821 ofmpcr = (struct ofmp_capability_request *)ofmph;
2822 if (ofmpcr->format != htonl(OFMPCAF_SIMPLE)) {
2823 /* xxx Find a better type than bad subtype */
2824 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2827 send_capability_reply(p, ofconn, ofmph->header.header.xid);
2830 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2835 handle_vendor(struct ofproto *p, struct ofconn *ofconn, void *msg)
2837 struct ofp_vendor_header *ovh = msg;
2838 struct nicira_header *nh;
2840 if (ntohs(ovh->header.length) < sizeof(struct ofp_vendor_header)) {
2841 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2843 if (ovh->vendor != htonl(NX_VENDOR_ID)) {
2844 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR);
2846 if (ntohs(ovh->header.length) < sizeof(struct nicira_header)) {
2847 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LENGTH);
2851 switch (ntohl(nh->subtype)) {
2852 case NXT_STATUS_REQUEST:
2853 return switch_status_handle_request(p->switch_status, ofconn->rconn,
2856 case NXT_ACT_SET_CONFIG:
2857 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2859 case NXT_ACT_GET_CONFIG:
2860 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE); /* XXX */
2862 case NXT_COMMAND_REQUEST:
2864 return executer_handle_request(p->executer, ofconn->rconn, msg);
2869 return handle_ofmp(p, ofconn, msg);
2872 return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE);
2876 handle_openflow(struct ofconn *ofconn, struct ofproto *p,
2877 struct ofpbuf *ofp_msg)
2879 struct ofp_header *oh = ofp_msg->data;
2882 COVERAGE_INC(ofproto_recv_openflow);
2884 case OFPT_ECHO_REQUEST:
2885 error = handle_echo_request(ofconn, oh);
2888 case OFPT_ECHO_REPLY:
2892 case OFPT_FEATURES_REQUEST:
2893 error = handle_features_request(p, ofconn, oh);
2896 case OFPT_GET_CONFIG_REQUEST:
2897 error = handle_get_config_request(p, ofconn, oh);
2900 case OFPT_SET_CONFIG:
2901 error = handle_set_config(p, ofconn, ofp_msg->data);
2904 case OFPT_PACKET_OUT:
2905 error = handle_packet_out(p, ofconn, ofp_msg->data);
2909 error = handle_port_mod(p, oh);
2913 error = handle_flow_mod(p, ofconn, ofp_msg->data);
2916 case OFPT_STATS_REQUEST:
2917 error = handle_stats_request(p, ofconn, oh);
2921 error = handle_vendor(p, ofconn, ofp_msg->data);
2925 if (VLOG_IS_WARN_ENABLED()) {
2926 char *s = ofp_to_string(oh, ntohs(oh->length), 2);
2927 VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s);
2930 error = ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE);
2935 send_error_oh(ofconn, ofp_msg->data, error);
2940 handle_odp_msg(struct ofproto *p, struct ofpbuf *packet)
2942 struct odp_msg *msg = packet->data;
2943 uint16_t in_port = odp_port_to_ofp_port(msg->port);
2945 struct ofpbuf payload;
2948 /* Handle controller actions. */
2949 if (msg->type == _ODPL_ACTION_NR) {
2950 COVERAGE_INC(ofproto_ctlr_action);
2951 pinsched_send(p->action_sched, in_port, packet,
2952 send_packet_in_action, p);
2956 payload.data = msg + 1;
2957 payload.size = msg->length - sizeof *msg;
2958 flow_extract(&payload, msg->port, &flow);
2960 rule = lookup_valid_rule(p, &flow);
2962 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
2963 struct ofport *port = port_array_get(&p->ports, msg->port);
2965 if (port->opp.config & OFPPC_NO_PACKET_IN) {
2966 COVERAGE_INC(ofproto_no_packet_in);
2967 /* XXX install 'drop' flow entry */
2968 ofpbuf_delete(packet);
2972 VLOG_WARN_RL(&rl, "packet-in on unknown port %"PRIu16, msg->port);
2975 COVERAGE_INC(ofproto_packet_in);
2976 pinsched_send(p->miss_sched, in_port, packet, send_packet_in_miss, p);
2980 if (rule->cr.wc.wildcards) {
2981 rule = rule_create_subrule(p, rule, &flow);
2982 rule_make_actions(p, rule, packet);
2984 if (!rule->may_install) {
2985 /* The rule is not installable, that is, we need to process every
2986 * packet, so process the current packet and set its actions into
2988 rule_make_actions(p, rule, packet);
2990 /* XXX revalidate rule if it needs it */
2994 rule_execute(p, rule, &payload, &flow);
2995 rule_reinstall(p, rule);
2996 ofpbuf_delete(packet);
3000 revalidate_cb(struct cls_rule *sub_, void *cbdata_)
3002 struct rule *sub = rule_from_cls_rule(sub_);
3003 struct revalidate_cbdata *cbdata = cbdata_;
3005 if (cbdata->revalidate_all
3006 || (cbdata->revalidate_subrules && sub->super)
3007 || (tag_set_intersects(&cbdata->revalidate_set, sub->tags))) {
3008 revalidate_rule(cbdata->ofproto, sub);
3013 revalidate_rule(struct ofproto *p, struct rule *rule)
3015 const flow_t *flow = &rule->cr.flow;
3017 COVERAGE_INC(ofproto_revalidate_rule);
3020 super = rule_from_cls_rule(classifier_lookup_wild(&p->cls, flow));
3022 rule_remove(p, rule);
3024 } else if (super != rule->super) {
3025 COVERAGE_INC(ofproto_revalidate_moved);
3026 list_remove(&rule->list);
3027 list_push_back(&super->list, &rule->list);
3028 rule->super = super;
3029 rule->hard_timeout = super->hard_timeout;
3030 rule->idle_timeout = super->idle_timeout;
3031 rule->created = super->created;
3036 rule_update_actions(p, rule);
3040 static struct ofpbuf *
3041 compose_flow_exp(const struct rule *rule, long long int now, uint8_t reason)
3043 struct ofp_flow_expired *ofe;
3046 ofe = make_openflow(sizeof *ofe, OFPT_FLOW_EXPIRED, &buf);
3047 flow_to_match(&rule->cr.flow, rule->cr.wc.wildcards, &ofe->match);
3048 ofe->priority = htons(rule->cr.priority);
3049 ofe->reason = reason;
3050 ofe->duration = (now - rule->created) / 1000;
3051 ofe->packet_count = rule->packet_count;
3052 ofe->byte_count = rule->byte_count;
3058 send_flow_exp(struct ofproto *p, struct rule *rule,
3059 long long int now, uint8_t reason)
3061 struct ofconn *ofconn;
3062 struct ofconn *prev;
3065 /* We limit the maximum number of queued flow expirations it by accounting
3066 * them under the counter for replies. That works because preventing
3067 * OpenFlow requests from being processed also prevents new flows from
3068 * being added (and expiring). (It also prevents processing OpenFlow
3069 * requests that would not add new flows, so it is imperfect.) */
3072 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3073 if (ofconn->send_flow_exp && rconn_is_connected(ofconn->rconn)) {
3075 queue_tx(ofpbuf_clone(buf), prev, ofconn->reply_counter);
3077 buf = compose_flow_exp(rule, now, reason);
3083 queue_tx(buf, prev, ofconn->reply_counter);
3088 uninstall_idle_flow(struct ofproto *ofproto, struct rule *rule)
3090 assert(rule->installed);
3091 assert(!rule->cr.wc.wildcards);
3094 rule_remove(ofproto, rule);
3096 rule_uninstall(ofproto, rule);
3101 expire_rule(struct cls_rule *cls_rule, void *p_)
3103 struct ofproto *p = p_;
3104 struct rule *rule = rule_from_cls_rule(cls_rule);
3105 long long int hard_expire, idle_expire, expire, now;
3107 hard_expire = (rule->hard_timeout
3108 ? rule->created + rule->hard_timeout * 1000
3110 idle_expire = (rule->idle_timeout
3111 && (rule->super || list_is_empty(&rule->list))
3112 ? rule->used + rule->idle_timeout * 1000
3114 expire = MIN(hard_expire, idle_expire);
3115 if (expire == LLONG_MAX) {
3116 if (rule->installed && time_msec() >= rule->used + 5000) {
3117 uninstall_idle_flow(p, rule);
3124 if (rule->installed && now >= rule->used + 5000) {
3125 uninstall_idle_flow(p, rule);
3130 COVERAGE_INC(ofproto_expired);
3131 if (rule->cr.wc.wildcards) {
3132 /* Update stats. (This code will be a no-op if the rule expired
3133 * due to an idle timeout, because in that case the rule has no
3134 * subrules left.) */
3135 struct rule *subrule, *next;
3136 LIST_FOR_EACH_SAFE (subrule, next, struct rule, list, &rule->list) {
3137 rule_remove(p, subrule);
3141 send_flow_exp(p, rule, now,
3143 ? OFPER_HARD_TIMEOUT : OFPER_IDLE_TIMEOUT));
3144 rule_remove(p, rule);
3148 update_used(struct ofproto *p)
3150 struct odp_flow *flows;
3155 error = dpif_flow_list_all(p->dpif, &flows, &n_flows);
3160 for (i = 0; i < n_flows; i++) {
3161 struct odp_flow *f = &flows[i];
3164 rule = rule_from_cls_rule(
3165 classifier_find_rule_exactly(&p->cls, &f->key, 0, UINT16_MAX));
3166 if (!rule || !rule->installed) {
3167 COVERAGE_INC(ofproto_unexpected_rule);
3168 dpif_flow_del(p->dpif, f);
3172 update_time(rule, &f->stats);
3173 rule_account(p, rule, f->stats.n_bytes);
3179 do_send_packet_in(struct ofconn *ofconn, uint32_t buffer_id,
3180 const struct ofpbuf *packet, int send_len)
3182 struct ofp_packet_in *opi;
3183 struct ofpbuf payload, *buf;
3184 struct odp_msg *msg;
3187 payload.data = msg + 1;
3188 payload.size = msg->length - sizeof *msg;
3190 send_len = MIN(send_len, payload.size);
3191 buf = ofpbuf_new(sizeof *opi + send_len);
3192 opi = put_openflow_xid(offsetof(struct ofp_packet_in, data),
3193 OFPT_PACKET_IN, 0, buf);
3194 opi->buffer_id = htonl(buffer_id);
3195 opi->total_len = htons(payload.size);
3196 opi->in_port = htons(odp_port_to_ofp_port(msg->port));
3197 opi->reason = msg->type == _ODPL_ACTION_NR ? OFPR_ACTION : OFPR_NO_MATCH;
3198 ofpbuf_put(buf, payload.data, MIN(send_len, payload.size));
3199 update_openflow_length(buf);
3200 rconn_send_with_limit(ofconn->rconn, buf, ofconn->packet_in_counter, 100);
3204 send_packet_in_action(struct ofpbuf *packet, void *p_)
3206 struct ofproto *p = p_;
3207 struct ofconn *ofconn;
3208 struct odp_msg *msg;
3211 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3212 if (ofconn == p->controller || ofconn->miss_send_len) {
3213 do_send_packet_in(ofconn, UINT32_MAX, packet, msg->arg);
3216 ofpbuf_delete(packet);
3220 send_packet_in_miss(struct ofpbuf *packet, void *p_)
3222 struct ofproto *p = p_;
3223 struct ofconn *ofconn;
3224 struct ofpbuf payload;
3225 struct odp_msg *msg;
3228 payload.data = msg + 1;
3229 payload.size = msg->length - sizeof *msg;
3230 LIST_FOR_EACH (ofconn, struct ofconn, node, &p->all_conns) {
3231 if (ofconn->miss_send_len) {
3232 uint32_t buffer_id = pktbuf_save(ofconn->pktbuf, &payload,
3234 int send_len = (buffer_id != UINT32_MAX ? ofconn->miss_send_len
3236 do_send_packet_in(ofconn, buffer_id, packet, send_len);
3239 ofpbuf_delete(packet);
3243 pick_datapath_id(struct dpif *dpif, uint64_t fallback_dpid)
3245 char local_name[IF_NAMESIZE];
3246 uint8_t ea[ETH_ADDR_LEN];
3249 error = dpif_port_get_name(dpif, ODPP_LOCAL,
3250 local_name, sizeof local_name);
3252 error = netdev_nodev_get_etheraddr(local_name, ea);
3254 return eth_addr_to_uint64(ea);
3256 VLOG_WARN("could not get MAC address for %s (%s)",
3257 local_name, strerror(error));
3260 return fallback_dpid;
3264 pick_fallback_dpid(void)
3266 uint8_t ea[ETH_ADDR_LEN];
3267 eth_addr_random(ea);
3268 ea[0] = 0x00; /* Set Nicira OUI. */
3271 return eth_addr_to_uint64(ea);
3275 default_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
3276 struct odp_actions *actions, tag_type *tags,
3279 struct ofproto *ofproto = ofproto_;
3282 /* Drop frames for reserved multicast addresses. */
3283 if (eth_addr_is_reserved(flow->dl_dst)) {
3287 /* Learn source MAC (but don't try to learn from revalidation). */
3288 if (packet != NULL) {
3289 tag_type rev_tag = mac_learning_learn(ofproto->ml, flow->dl_src,
3292 /* The log messages here could actually be useful in debugging,
3293 * so keep the rate limit relatively high. */
3294 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
3295 VLOG_DBG_RL(&rl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
3296 ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
3297 ofproto_revalidate(ofproto, rev_tag);
3301 /* Determine output port. */
3302 out_port = mac_learning_lookup_tag(ofproto->ml, flow->dl_dst, 0, tags);
3304 add_output_group_action(actions, DP_GROUP_FLOOD);
3305 } else if (out_port != flow->in_port) {
3306 odp_actions_add(actions, ODPAT_OUTPUT)->output.port = out_port;
3314 static const struct ofhooks default_ofhooks = {
3316 default_normal_ofhook_cb,