2 * Copyright (c) 2009 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 #include <netinet/in.h>
25 #include "classifier.h"
27 #include "discovery.h"
29 #include "dynamic-string.h"
31 #include "fail-open.h"
33 #include "mac-learning.h"
37 #include "ofp-print.h"
39 #include "openflow/nicira-ext.h"
40 #include "openflow/openflow.h"
41 #include "openflow/openflow-mgmt.h"
42 #include "openvswitch/datapath-protocol.h"
46 #include "poll-loop.h"
47 #include "port-array.h"
57 #include "vconn-ssl.h"
60 #define THIS_MODULE VLM_ofproto
70 TABLEID_CLASSIFIER
= 1
74 struct netdev
*netdev
;
75 struct ofp_phy_port opp
; /* In host byte order. */
78 static void ofport_free(struct ofport
*);
79 static void hton_ofp_phy_port(struct ofp_phy_port
*);
81 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
82 const flow_t
*flow
, struct ofproto
*ofproto
,
83 const struct ofpbuf
*packet
,
84 struct odp_actions
*out
, tag_type
*tags
,
85 bool *may_setup_flow
);
90 uint16_t idle_timeout
; /* In seconds from time of last use. */
91 uint16_t hard_timeout
; /* In seconds from time of creation. */
92 long long int used
; /* Last-used time (0 if never used). */
93 long long int created
; /* Creation time. */
94 uint64_t packet_count
; /* Number of packets received. */
95 uint64_t byte_count
; /* Number of bytes received. */
96 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
97 uint8_t tcp_flags
; /* Bitwise-OR of all TCP flags seen. */
98 uint8_t ip_tos
; /* Last-seen IP type-of-service. */
99 tag_type tags
; /* Tags (set only by hooks). */
101 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
102 * exact-match rule (having cr.wc.wildcards of 0) generated from the
103 * wildcard rule 'super'. In this case, 'list' is an element of the
106 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
107 * a list of subrules. A super-rule with no wildcards (where
108 * cr.wc.wildcards is 0) will never have any subrules. */
114 * A subrule has no actions (it uses the super-rule's actions). */
116 union ofp_action
*actions
;
120 * A super-rule with wildcard fields never has ODP actions (since the
121 * datapath only supports exact-match flows). */
122 bool installed
; /* Installed in datapath? */
123 bool may_install
; /* True ordinarily; false if actions must
124 * be reassessed for every packet. */
126 union odp_action
*odp_actions
;
130 rule_is_hidden(const struct rule
*rule
)
132 /* Subrules are merely an implementation detail, so hide them from the
134 if (rule
->super
!= NULL
) {
138 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
139 * (e.g. by in-band control) and are intentionally hidden from the
141 if (rule
->cr
.priority
> UINT16_MAX
) {
148 static struct rule
*rule_create(struct rule
*super
, const union ofp_action
*,
149 size_t n_actions
, uint16_t idle_timeout
,
150 uint16_t hard_timeout
);
151 static void rule_free(struct rule
*);
152 static void rule_destroy(struct ofproto
*, struct rule
*);
153 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
154 static void rule_insert(struct ofproto
*, struct rule
*,
155 struct ofpbuf
*packet
, uint16_t in_port
);
156 static void rule_remove(struct ofproto
*, struct rule
*);
157 static bool rule_make_actions(struct ofproto
*, struct rule
*,
158 const struct ofpbuf
*packet
);
159 static void rule_install(struct ofproto
*, struct rule
*,
160 struct rule
*displaced_rule
);
161 static void rule_uninstall(struct ofproto
*, struct rule
*);
162 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
167 struct pktbuf
*pktbuf
;
171 struct rconn_packet_counter
*packet_in_counter
;
173 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
174 * the maximum number before we stop reading OpenFlow requests. */
175 #define OFCONN_REPLY_MAX 100
176 struct rconn_packet_counter
*reply_counter
;
179 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*);
180 static void ofconn_destroy(struct ofconn
*, struct ofproto
*);
181 static void ofconn_run(struct ofconn
*, struct ofproto
*);
182 static void ofconn_wait(struct ofconn
*);
183 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
184 struct rconn_packet_counter
*counter
);
188 uint64_t datapath_id
; /* Datapath ID. */
189 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
190 uint64_t mgmt_id
; /* Management channel identifier. */
191 char *manufacturer
; /* Manufacturer. */
192 char *hardware
; /* Hardware. */
193 char *software
; /* Software version. */
194 char *serial
; /* Serial number. */
198 struct netdev_monitor
*netdev_monitor
;
199 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
201 struct shash port_by_name
;
205 struct switch_status
*switch_status
;
206 struct status_category
*ss_cat
;
207 struct in_band
*in_band
;
208 struct discovery
*discovery
;
209 struct fail_open
*fail_open
;
210 struct pinsched
*miss_sched
, *action_sched
;
211 struct executer
*executer
;
212 struct netflow
*netflow
;
215 struct classifier cls
;
216 bool need_revalidate
;
217 long long int next_expiration
;
218 struct tag_set revalidate_set
;
220 /* OpenFlow connections. */
221 struct list all_conns
;
222 struct ofconn
*controller
;
223 struct pvconn
**listeners
;
225 struct pvconn
**snoops
;
228 /* Hooks for ovs-vswitchd. */
229 const struct ofhooks
*ofhooks
;
232 /* Used by default ofhooks. */
233 struct mac_learning
*ml
;
236 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
238 static const struct ofhooks default_ofhooks
;
240 static uint64_t pick_datapath_id(const struct ofproto
*);
241 static uint64_t pick_fallback_dpid(void);
242 static void send_packet_in_miss(struct ofpbuf
*, void *ofproto
);
243 static void send_packet_in_action(struct ofpbuf
*, void *ofproto
);
244 static void update_used(struct ofproto
*);
245 static void update_stats(struct rule
*, const struct odp_flow_stats
*);
246 static void expire_rule(struct cls_rule
*, void *ofproto
);
247 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
248 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
250 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
252 static void handle_openflow(struct ofconn
*, struct ofproto
*,
255 static void refresh_port_group(struct ofproto
*, unsigned int group
);
256 static void update_port(struct ofproto
*, const char *devname
);
257 static int init_ports(struct ofproto
*);
258 static void reinit_ports(struct ofproto
*);
261 ofproto_create(const char *datapath
, const struct ofhooks
*ofhooks
, void *aux
,
262 struct ofproto
**ofprotop
)
264 struct odp_stats stats
;
271 /* Connect to datapath and start listening for messages. */
272 error
= dpif_open(datapath
, &dpif
);
274 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
277 error
= dpif_get_dp_stats(dpif
, &stats
);
279 VLOG_ERR("failed to obtain stats for datapath %s: %s",
280 datapath
, strerror(error
));
284 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
);
286 VLOG_ERR("failed to listen on datapath %s: %s",
287 datapath
, strerror(error
));
291 dpif_flow_flush(dpif
);
292 dpif_recv_purge(dpif
);
294 /* Initialize settings. */
295 p
= xcalloc(1, sizeof *p
);
296 p
->fallback_dpid
= pick_fallback_dpid();
297 p
->datapath_id
= p
->fallback_dpid
;
298 p
->manufacturer
= xstrdup("Nicira Networks, Inc.");
299 p
->hardware
= xstrdup("Reference Implementation");
300 p
->software
= xstrdup(VERSION BUILDNR
);
301 p
->serial
= xstrdup("None");
303 /* Initialize datapath. */
305 p
->netdev_monitor
= netdev_monitor_create();
306 port_array_init(&p
->ports
);
307 shash_init(&p
->port_by_name
);
308 p
->max_ports
= stats
.max_ports
;
310 /* Initialize submodules. */
311 p
->switch_status
= switch_status_create(p
);
315 p
->miss_sched
= p
->action_sched
= NULL
;
319 /* Initialize flow table. */
320 classifier_init(&p
->cls
);
321 p
->need_revalidate
= false;
322 p
->next_expiration
= time_msec() + 1000;
323 tag_set_init(&p
->revalidate_set
);
325 /* Initialize OpenFlow connections. */
326 list_init(&p
->all_conns
);
327 p
->controller
= ofconn_create(p
, rconn_create(5, 8));
328 p
->controller
->pktbuf
= pktbuf_create();
329 p
->controller
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
335 /* Initialize hooks. */
337 p
->ofhooks
= ofhooks
;
341 p
->ofhooks
= &default_ofhooks
;
343 p
->ml
= mac_learning_create();
346 /* Register switch status category. */
347 p
->ss_cat
= switch_status_register(p
->switch_status
, "remote",
348 rconn_status_cb
, p
->controller
->rconn
);
351 error
= init_ports(p
);
357 /* Pick final datapath ID. */
358 p
->datapath_id
= pick_datapath_id(p
);
359 VLOG_INFO("using datapath ID %012"PRIx64
, p
->datapath_id
);
366 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
368 uint64_t old_dpid
= p
->datapath_id
;
369 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
370 if (p
->datapath_id
!= old_dpid
) {
371 VLOG_INFO("datapath ID changed to %012"PRIx64
, p
->datapath_id
);
372 rconn_reconnect(p
->controller
->rconn
);
377 ofproto_set_mgmt_id(struct ofproto
*p
, uint64_t mgmt_id
)
379 p
->mgmt_id
= mgmt_id
;
383 ofproto_set_probe_interval(struct ofproto
*p
, int probe_interval
)
385 probe_interval
= probe_interval
? MAX(probe_interval
, 5) : 0;
386 rconn_set_probe_interval(p
->controller
->rconn
, probe_interval
);
388 int trigger_duration
= probe_interval
? probe_interval
* 3 : 15;
389 fail_open_set_trigger_duration(p
->fail_open
, trigger_duration
);
394 ofproto_set_max_backoff(struct ofproto
*p
, int max_backoff
)
396 rconn_set_max_backoff(p
->controller
->rconn
, max_backoff
);
400 ofproto_set_desc(struct ofproto
*p
,
401 const char *manufacturer
, const char *hardware
,
402 const char *software
, const char *serial
)
405 free(p
->manufacturer
);
406 p
->manufacturer
= xstrdup(manufacturer
);
410 p
->hardware
= xstrdup(hardware
);
414 p
->software
= xstrdup(software
);
418 p
->serial
= xstrdup(serial
);
423 ofproto_set_in_band(struct ofproto
*p
, bool in_band
)
425 if (in_band
!= (p
->in_band
!= NULL
)) {
427 return in_band_create(p
, p
->dpif
, p
->switch_status
,
428 p
->controller
->rconn
, &p
->in_band
);
430 ofproto_set_discovery(p
, false, NULL
, true);
431 in_band_destroy(p
->in_band
);
434 rconn_reconnect(p
->controller
->rconn
);
440 ofproto_set_discovery(struct ofproto
*p
, bool discovery
,
441 const char *re
, bool update_resolv_conf
)
443 if (discovery
!= (p
->discovery
!= NULL
)) {
445 int error
= ofproto_set_in_band(p
, true);
449 error
= discovery_create(re
, update_resolv_conf
,
450 p
->dpif
, p
->switch_status
,
456 discovery_destroy(p
->discovery
);
459 rconn_disconnect(p
->controller
->rconn
);
460 } else if (discovery
) {
461 discovery_set_update_resolv_conf(p
->discovery
, update_resolv_conf
);
462 return discovery_set_accept_controller_re(p
->discovery
, re
);
468 ofproto_set_controller(struct ofproto
*ofproto
, const char *controller
)
470 if (ofproto
->discovery
) {
472 } else if (controller
) {
473 if (strcmp(rconn_get_name(ofproto
->controller
->rconn
), controller
)) {
474 return rconn_connect(ofproto
->controller
->rconn
, controller
);
479 rconn_disconnect(ofproto
->controller
->rconn
);
485 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
486 const struct svec
*svec
)
488 struct pvconn
**pvconns
= *pvconnsp
;
489 size_t n_pvconns
= *n_pvconnsp
;
493 for (i
= 0; i
< n_pvconns
; i
++) {
494 pvconn_close(pvconns
[i
]);
498 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
500 for (i
= 0; i
< svec
->n
; i
++) {
501 const char *name
= svec
->names
[i
];
502 struct pvconn
*pvconn
;
505 error
= pvconn_open(name
, &pvconn
);
507 pvconns
[n_pvconns
++] = pvconn
;
509 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
517 *n_pvconnsp
= n_pvconns
;
523 ofproto_set_listeners(struct ofproto
*ofproto
, const struct svec
*listeners
)
525 return set_pvconns(&ofproto
->listeners
, &ofproto
->n_listeners
, listeners
);
529 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
531 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
535 ofproto_set_netflow(struct ofproto
*ofproto
, const struct svec
*collectors
,
536 uint8_t engine_type
, uint8_t engine_id
, bool add_id_to_iface
)
538 if (collectors
&& collectors
->n
) {
539 if (!ofproto
->netflow
) {
540 ofproto
->netflow
= netflow_create();
542 netflow_set_engine(ofproto
->netflow
, engine_type
, engine_id
,
544 return netflow_set_collectors(ofproto
->netflow
, collectors
);
546 netflow_destroy(ofproto
->netflow
);
547 ofproto
->netflow
= NULL
;
553 ofproto_set_failure(struct ofproto
*ofproto
, bool fail_open
)
556 struct rconn
*rconn
= ofproto
->controller
->rconn
;
557 int trigger_duration
= rconn_get_probe_interval(rconn
) * 3;
558 if (!ofproto
->fail_open
) {
559 ofproto
->fail_open
= fail_open_create(ofproto
, trigger_duration
,
560 ofproto
->switch_status
,
563 fail_open_set_trigger_duration(ofproto
->fail_open
,
567 fail_open_destroy(ofproto
->fail_open
);
568 ofproto
->fail_open
= NULL
;
573 ofproto_set_rate_limit(struct ofproto
*ofproto
,
574 int rate_limit
, int burst_limit
)
576 if (rate_limit
> 0) {
577 if (!ofproto
->miss_sched
) {
578 ofproto
->miss_sched
= pinsched_create(rate_limit
, burst_limit
,
579 ofproto
->switch_status
);
580 ofproto
->action_sched
= pinsched_create(rate_limit
, burst_limit
,
583 pinsched_set_limits(ofproto
->miss_sched
, rate_limit
, burst_limit
);
584 pinsched_set_limits(ofproto
->action_sched
,
585 rate_limit
, burst_limit
);
588 pinsched_destroy(ofproto
->miss_sched
);
589 ofproto
->miss_sched
= NULL
;
590 pinsched_destroy(ofproto
->action_sched
);
591 ofproto
->action_sched
= NULL
;
596 ofproto_set_stp(struct ofproto
*ofproto UNUSED
, bool enable_stp
)
600 VLOG_WARN("STP is not yet implemented");
608 ofproto_set_remote_execution(struct ofproto
*ofproto
, const char *command_acl
,
609 const char *command_dir
)
612 if (!ofproto
->executer
) {
613 return executer_create(command_acl
, command_dir
,
616 executer_set_acl(ofproto
->executer
, command_acl
, command_dir
);
619 executer_destroy(ofproto
->executer
);
620 ofproto
->executer
= NULL
;
626 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
628 return ofproto
->datapath_id
;
632 ofproto_get_mgmt_id(const struct ofproto
*ofproto
)
634 return ofproto
->mgmt_id
;
638 ofproto_get_probe_interval(const struct ofproto
*ofproto
)
640 return rconn_get_probe_interval(ofproto
->controller
->rconn
);
644 ofproto_get_max_backoff(const struct ofproto
*ofproto
)
646 return rconn_get_max_backoff(ofproto
->controller
->rconn
);
650 ofproto_get_in_band(const struct ofproto
*ofproto
)
652 return ofproto
->in_band
!= NULL
;
656 ofproto_get_discovery(const struct ofproto
*ofproto
)
658 return ofproto
->discovery
!= NULL
;
662 ofproto_get_controller(const struct ofproto
*ofproto
)
664 return rconn_get_name(ofproto
->controller
->rconn
);
668 ofproto_get_listeners(const struct ofproto
*ofproto
, struct svec
*listeners
)
672 for (i
= 0; i
< ofproto
->n_listeners
; i
++) {
673 svec_add(listeners
, pvconn_get_name(ofproto
->listeners
[i
]));
678 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
682 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
683 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
688 ofproto_destroy(struct ofproto
*p
)
690 struct ofconn
*ofconn
, *next_ofconn
;
691 struct ofport
*ofport
;
692 unsigned int port_no
;
699 ofproto_flush_flows(p
);
700 classifier_destroy(&p
->cls
);
702 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
704 ofconn_destroy(ofconn
, p
);
708 netdev_monitor_destroy(p
->netdev_monitor
);
709 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
712 shash_destroy(&p
->port_by_name
);
714 switch_status_destroy(p
->switch_status
);
715 in_band_destroy(p
->in_band
);
716 discovery_destroy(p
->discovery
);
717 fail_open_destroy(p
->fail_open
);
718 pinsched_destroy(p
->miss_sched
);
719 pinsched_destroy(p
->action_sched
);
720 executer_destroy(p
->executer
);
721 netflow_destroy(p
->netflow
);
723 switch_status_unregister(p
->ss_cat
);
725 for (i
= 0; i
< p
->n_listeners
; i
++) {
726 pvconn_close(p
->listeners
[i
]);
730 for (i
= 0; i
< p
->n_snoops
; i
++) {
731 pvconn_close(p
->snoops
[i
]);
735 mac_learning_destroy(p
->ml
);
741 ofproto_run(struct ofproto
*p
)
743 int error
= ofproto_run1(p
);
745 error
= ofproto_run2(p
, false);
751 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
753 if (error
== ENOBUFS
) {
754 reinit_ports(ofproto
);
756 update_port(ofproto
, devname
);
762 ofproto_run1(struct ofproto
*p
)
764 struct ofconn
*ofconn
, *next_ofconn
;
769 for (i
= 0; i
< 50; i
++) {
773 error
= dpif_recv(p
->dpif
, &buf
);
775 if (error
== ENODEV
) {
776 /* Someone destroyed the datapath behind our back. The caller
777 * better destroy us and give up, because we're just going to
778 * spin from here on out. */
779 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
780 VLOG_ERR_RL(&rl
, "%s: datapath was destroyed externally",
787 handle_odp_msg(p
, buf
);
790 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
791 process_port_change(p
, error
, devname
);
793 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
794 &devname
)) != EAGAIN
) {
795 process_port_change(p
, error
, devname
);
799 in_band_run(p
->in_band
);
802 char *controller_name
;
803 if (rconn_is_connectivity_questionable(p
->controller
->rconn
)) {
804 discovery_question_connectivity(p
->discovery
);
806 if (discovery_run(p
->discovery
, &controller_name
)) {
807 if (controller_name
) {
808 rconn_connect(p
->controller
->rconn
, controller_name
);
810 rconn_disconnect(p
->controller
->rconn
);
814 pinsched_run(p
->miss_sched
, send_packet_in_miss
, p
);
815 pinsched_run(p
->action_sched
, send_packet_in_action
, p
);
817 executer_run(p
->executer
);
820 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
822 ofconn_run(ofconn
, p
);
825 /* Fail-open maintenance. Do this after processing the ofconns since
826 * fail-open checks the status of the controller rconn. */
828 fail_open_run(p
->fail_open
);
831 for (i
= 0; i
< p
->n_listeners
; i
++) {
835 retval
= pvconn_accept(p
->listeners
[i
], OFP_VERSION
, &vconn
);
837 ofconn_create(p
, rconn_new_from_vconn("passive", vconn
));
838 } else if (retval
!= EAGAIN
) {
839 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
843 for (i
= 0; i
< p
->n_snoops
; i
++) {
847 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
849 rconn_add_monitor(p
->controller
->rconn
, vconn
);
850 } else if (retval
!= EAGAIN
) {
851 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
855 if (time_msec() >= p
->next_expiration
) {
856 COVERAGE_INC(ofproto_expiration
);
857 p
->next_expiration
= time_msec() + 1000;
860 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
862 /* Let the hook know that we're at a stable point: all outstanding data
863 * in existing flows has been accounted to the account_cb. Thus, the
864 * hook can now reasonably do operations that depend on having accurate
865 * flow volume accounting (currently, that's just bond rebalancing). */
866 if (p
->ofhooks
->account_checkpoint_cb
) {
867 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
872 netflow_run(p
->netflow
);
878 struct revalidate_cbdata
{
879 struct ofproto
*ofproto
;
880 bool revalidate_all
; /* Revalidate all exact-match rules? */
881 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
882 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
886 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
888 if (p
->need_revalidate
|| revalidate_all
889 || !tag_set_is_empty(&p
->revalidate_set
)) {
890 struct revalidate_cbdata cbdata
;
892 cbdata
.revalidate_all
= revalidate_all
;
893 cbdata
.revalidate_subrules
= p
->need_revalidate
;
894 cbdata
.revalidate_set
= p
->revalidate_set
;
895 tag_set_init(&p
->revalidate_set
);
896 COVERAGE_INC(ofproto_revalidate
);
897 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
898 p
->need_revalidate
= false;
905 ofproto_wait(struct ofproto
*p
)
907 struct ofconn
*ofconn
;
910 dpif_recv_wait(p
->dpif
);
911 dpif_port_poll_wait(p
->dpif
);
912 netdev_monitor_poll_wait(p
->netdev_monitor
);
913 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
917 in_band_wait(p
->in_band
);
920 discovery_wait(p
->discovery
);
923 fail_open_wait(p
->fail_open
);
925 pinsched_wait(p
->miss_sched
);
926 pinsched_wait(p
->action_sched
);
928 executer_wait(p
->executer
);
930 if (!tag_set_is_empty(&p
->revalidate_set
)) {
931 poll_immediate_wake();
933 if (p
->need_revalidate
) {
934 /* Shouldn't happen, but if it does just go around again. */
935 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
936 poll_immediate_wake();
937 } else if (p
->next_expiration
!= LLONG_MAX
) {
938 poll_timer_wait(p
->next_expiration
- time_msec());
940 for (i
= 0; i
< p
->n_listeners
; i
++) {
941 pvconn_wait(p
->listeners
[i
]);
943 for (i
= 0; i
< p
->n_snoops
; i
++) {
944 pvconn_wait(p
->snoops
[i
]);
949 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
951 tag_set_add(&ofproto
->revalidate_set
, tag
);
955 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
957 return &ofproto
->revalidate_set
;
961 ofproto_is_alive(const struct ofproto
*p
)
963 return p
->discovery
|| rconn_is_alive(p
->controller
->rconn
);
967 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
968 const union ofp_action
*actions
, size_t n_actions
,
969 const struct ofpbuf
*packet
)
971 struct odp_actions odp_actions
;
974 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
980 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
982 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
983 odp_actions
.n_actions
, packet
);
988 ofproto_add_flow(struct ofproto
*p
,
989 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
990 const union ofp_action
*actions
, size_t n_actions
,
994 rule
= rule_create(NULL
, actions
, n_actions
,
995 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */, 0);
996 cls_rule_from_flow(&rule
->cr
, flow
, wildcards
, priority
);
997 rule_insert(p
, rule
, NULL
, 0);
1001 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1002 uint32_t wildcards
, unsigned int priority
)
1006 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1010 rule_remove(ofproto
, rule
);
1015 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1017 struct rule
*rule
= rule_from_cls_rule(rule_
);
1018 struct ofproto
*ofproto
= ofproto_
;
1020 /* Mark the flow as not installed, even though it might really be
1021 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1022 * There is no point in uninstalling it individually since we are about to
1023 * blow away all the flows with dpif_flow_flush(). */
1024 rule
->installed
= false;
1026 rule_remove(ofproto
, rule
);
1030 ofproto_flush_flows(struct ofproto
*ofproto
)
1032 COVERAGE_INC(ofproto_flush
);
1033 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1034 dpif_flow_flush(ofproto
->dpif
);
1035 if (ofproto
->in_band
) {
1036 in_band_flushed(ofproto
->in_band
);
1038 if (ofproto
->fail_open
) {
1039 fail_open_flushed(ofproto
->fail_open
);
1044 reinit_ports(struct ofproto
*p
)
1046 struct svec devnames
;
1047 struct ofport
*ofport
;
1048 unsigned int port_no
;
1049 struct odp_port
*odp_ports
;
1053 svec_init(&devnames
);
1054 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1055 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1057 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1058 for (i
= 0; i
< n_odp_ports
; i
++) {
1059 svec_add (&devnames
, odp_ports
[i
].devname
);
1063 svec_sort_unique(&devnames
);
1064 for (i
= 0; i
< devnames
.n
; i
++) {
1065 update_port(p
, devnames
.names
[i
]);
1067 svec_destroy(&devnames
);
1071 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1075 struct ofport
*port
;
1076 unsigned int port_no
;
1078 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1080 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1082 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1083 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1084 ports
[n_ports
++] = port_no
;
1087 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1092 refresh_port_groups(struct ofproto
*p
)
1094 refresh_port_group(p
, DP_GROUP_FLOOD
);
1095 refresh_port_group(p
, DP_GROUP_ALL
);
1098 static struct ofport
*
1099 make_ofport(const struct odp_port
*odp_port
)
1101 enum netdev_flags flags
;
1102 struct ofport
*ofport
;
1103 struct netdev
*netdev
;
1107 error
= netdev_open(odp_port
->devname
, NETDEV_ETH_TYPE_NONE
, &netdev
);
1109 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1110 "cannot be opened (%s)",
1111 odp_port
->devname
, odp_port
->port
,
1112 odp_port
->devname
, strerror(error
));
1116 ofport
= xmalloc(sizeof *ofport
);
1117 ofport
->netdev
= netdev
;
1118 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1119 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1120 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1121 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1122 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1124 netdev_get_flags(netdev
, &flags
);
1125 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1127 netdev_get_carrier(netdev
, &carrier
);
1128 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1130 netdev_get_features(netdev
,
1131 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1132 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1137 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1139 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1140 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1143 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1144 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1153 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1155 const struct ofp_phy_port
*a
= &a_
->opp
;
1156 const struct ofp_phy_port
*b
= &b_
->opp
;
1158 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1159 return (a
->port_no
== b
->port_no
1160 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1161 && !strcmp((char *) a
->name
, (char *) b
->name
)
1162 && a
->state
== b
->state
1163 && a
->config
== b
->config
1164 && a
->curr
== b
->curr
1165 && a
->advertised
== b
->advertised
1166 && a
->supported
== b
->supported
1167 && a
->peer
== b
->peer
);
1171 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1174 /* XXX Should limit the number of queued port status change messages. */
1175 struct ofconn
*ofconn
;
1176 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1177 struct ofp_port_status
*ops
;
1180 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1181 ops
->reason
= reason
;
1182 ops
->desc
= ofport
->opp
;
1183 hton_ofp_phy_port(&ops
->desc
);
1184 queue_tx(b
, ofconn
, NULL
);
1186 if (p
->ofhooks
->port_changed_cb
) {
1187 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1192 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1194 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1195 port_array_set(&p
->ports
, ofp_port_to_odp_port(ofport
->opp
.port_no
),
1197 shash_add(&p
->port_by_name
, (char *) ofport
->opp
.name
, ofport
);
1201 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1203 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1204 port_array_set(&p
->ports
, ofp_port_to_odp_port(ofport
->opp
.port_no
), NULL
);
1205 shash_delete(&p
->port_by_name
,
1206 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1210 ofport_free(struct ofport
*ofport
)
1213 netdev_close(ofport
->netdev
);
1219 update_port(struct ofproto
*p
, const char *devname
)
1221 struct odp_port odp_port
;
1222 struct ofport
*old_ofport
;
1223 struct ofport
*new_ofport
;
1226 COVERAGE_INC(ofproto_update_port
);
1228 /* Query the datapath for port information. */
1229 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1231 /* Find the old ofport. */
1232 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1235 /* There's no port named 'devname' but there might be a port with
1236 * the same port number. This could happen if a port is deleted
1237 * and then a new one added in its place very quickly, or if a port
1238 * is renamed. In the former case we want to send an OFPPR_DELETE
1239 * and an OFPPR_ADD, and in the latter case we want to send a
1240 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1241 * the old port's ifindex against the new port, or perhaps less
1242 * reliably but more portably by comparing the old port's MAC
1243 * against the new port's MAC. However, this code isn't that smart
1244 * and always sends an OFPPR_MODIFY (XXX). */
1245 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1247 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1248 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1249 "%s", strerror(error
));
1253 /* Create a new ofport. */
1254 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1256 /* Eliminate a few pathological cases. */
1257 if (!old_ofport
&& !new_ofport
) {
1259 } else if (old_ofport
&& new_ofport
) {
1260 /* Most of the 'config' bits are OpenFlow soft state, but
1261 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1262 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1263 * leaves the other bits 0.) */
1264 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1266 if (ofport_equal(old_ofport
, new_ofport
)) {
1267 /* False alarm--no change. */
1268 ofport_free(new_ofport
);
1273 /* Now deal with the normal cases. */
1275 ofport_remove(p
, old_ofport
);
1278 ofport_install(p
, new_ofport
);
1280 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1281 (!old_ofport
? OFPPR_ADD
1282 : !new_ofport
? OFPPR_DELETE
1284 ofport_free(old_ofport
);
1286 /* Update port groups. */
1287 refresh_port_groups(p
);
1291 init_ports(struct ofproto
*p
)
1293 struct odp_port
*ports
;
1298 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1303 for (i
= 0; i
< n_ports
; i
++) {
1304 const struct odp_port
*odp_port
= &ports
[i
];
1305 if (!ofport_conflicts(p
, odp_port
)) {
1306 struct ofport
*ofport
= make_ofport(odp_port
);
1308 ofport_install(p
, ofport
);
1313 refresh_port_groups(p
);
1317 static struct ofconn
*
1318 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
)
1320 struct ofconn
*ofconn
= xmalloc(sizeof *ofconn
);
1321 list_push_back(&p
->all_conns
, &ofconn
->node
);
1322 ofconn
->rconn
= rconn
;
1323 ofconn
->pktbuf
= NULL
;
1324 ofconn
->send_flow_exp
= false;
1325 ofconn
->miss_send_len
= 0;
1326 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1327 ofconn
->reply_counter
= rconn_packet_counter_create ();
1332 ofconn_destroy(struct ofconn
*ofconn
, struct ofproto
*p
)
1335 executer_rconn_closing(p
->executer
, ofconn
->rconn
);
1338 list_remove(&ofconn
->node
);
1339 rconn_destroy(ofconn
->rconn
);
1340 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1341 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1342 pktbuf_destroy(ofconn
->pktbuf
);
1347 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1351 rconn_run(ofconn
->rconn
);
1353 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1354 /* Limit the number of iterations to prevent other tasks from
1356 for (iteration
= 0; iteration
< 50; iteration
++) {
1357 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1362 fail_open_maybe_recover(p
->fail_open
);
1364 handle_openflow(ofconn
, p
, of_msg
);
1365 ofpbuf_delete(of_msg
);
1369 if (ofconn
!= p
->controller
&& !rconn_is_alive(ofconn
->rconn
)) {
1370 ofconn_destroy(ofconn
, p
);
1375 ofconn_wait(struct ofconn
*ofconn
)
1377 rconn_run_wait(ofconn
->rconn
);
1378 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1379 rconn_recv_wait(ofconn
->rconn
);
1381 COVERAGE_INC(ofproto_ofconn_stuck
);
1385 /* Caller is responsible for initializing the 'cr' member of the returned
1387 static struct rule
*
1388 rule_create(struct rule
*super
,
1389 const union ofp_action
*actions
, size_t n_actions
,
1390 uint16_t idle_timeout
, uint16_t hard_timeout
)
1392 struct rule
*rule
= xcalloc(1, sizeof *rule
);
1393 rule
->idle_timeout
= idle_timeout
;
1394 rule
->hard_timeout
= hard_timeout
;
1395 rule
->used
= rule
->created
= time_msec();
1396 rule
->super
= super
;
1398 list_push_back(&super
->list
, &rule
->list
);
1400 list_init(&rule
->list
);
1402 rule
->n_actions
= n_actions
;
1403 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1407 static struct rule
*
1408 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1410 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1414 rule_free(struct rule
*rule
)
1416 free(rule
->actions
);
1417 free(rule
->odp_actions
);
1421 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1422 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1423 * through all of its subrules and revalidates them, destroying any that no
1424 * longer has a super-rule (which is probably all of them).
1426 * Before calling this function, the caller must make have removed 'rule' from
1427 * the classifier. If 'rule' is an exact-match rule, the caller is also
1428 * responsible for ensuring that it has been uninstalled from the datapath. */
1430 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1433 struct rule
*subrule
, *next
;
1434 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1435 revalidate_rule(ofproto
, subrule
);
1438 list_remove(&rule
->list
);
1444 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1446 const union ofp_action
*oa
;
1447 struct actions_iterator i
;
1449 if (out_port
== htons(OFPP_NONE
)) {
1452 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1453 oa
= actions_next(&i
)) {
1454 if (oa
->type
== htons(OFPAT_OUTPUT
) && oa
->output
.port
== out_port
) {
1461 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1462 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1464 * The flow that 'packet' actually contains does not need to actually match
1465 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1466 * the packet and byte counters for 'rule' will be credited for the packet sent
1467 * out whether or not the packet actually matches 'rule'.
1469 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1470 * the caller must already have accurately composed ODP actions for it given
1471 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1472 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1473 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1474 * actions and apply them to 'packet'. */
1476 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1477 struct ofpbuf
*packet
, const flow_t
*flow
)
1479 const union odp_action
*actions
;
1481 struct odp_actions a
;
1483 /* Grab or compose the ODP actions.
1485 * The special case for an exact-match 'rule' where 'flow' is not the
1486 * rule's flow is important to avoid, e.g., sending a packet out its input
1487 * port simply because the ODP actions were composed for the wrong
1489 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1490 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1491 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1492 packet
, &a
, NULL
, 0)) {
1495 actions
= a
.actions
;
1496 n_actions
= a
.n_actions
;
1498 actions
= rule
->odp_actions
;
1499 n_actions
= rule
->n_odp_actions
;
1502 /* Execute the ODP actions. */
1503 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1504 actions
, n_actions
, packet
)) {
1505 struct odp_flow_stats stats
;
1506 flow_extract_stats(flow
, packet
, &stats
);
1507 update_stats(rule
, &stats
);
1508 rule
->used
= time_msec();
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(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
);
1590 actions_len
= a
.n_actions
* sizeof *a
.actions
;
1591 if (rule
->n_odp_actions
!= a
.n_actions
1592 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
1593 COVERAGE_INC(ofproto_odp_unchanged
);
1594 free(rule
->odp_actions
);
1595 rule
->n_odp_actions
= a
.n_actions
;
1596 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
1604 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
1605 struct odp_flow_put
*put
)
1607 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
1608 put
->flow
.key
= rule
->cr
.flow
;
1609 put
->flow
.actions
= rule
->odp_actions
;
1610 put
->flow
.n_actions
= rule
->n_odp_actions
;
1612 return dpif_flow_put(ofproto
->dpif
, put
);
1616 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
1618 assert(!rule
->cr
.wc
.wildcards
);
1620 if (rule
->may_install
) {
1621 struct odp_flow_put put
;
1622 if (!do_put_flow(p
, rule
,
1623 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
1625 rule
->installed
= true;
1626 if (displaced_rule
) {
1627 update_stats(rule
, &put
.flow
.stats
);
1628 rule_post_uninstall(p
, displaced_rule
);
1631 } else if (displaced_rule
) {
1632 rule_uninstall(p
, displaced_rule
);
1637 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
1639 if (rule
->installed
) {
1640 struct odp_flow_put put
;
1641 COVERAGE_INC(ofproto_dp_missed
);
1642 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1644 rule_install(ofproto
, rule
, NULL
);
1649 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
1651 bool actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
1652 if (rule
->may_install
) {
1653 if (rule
->installed
) {
1654 if (actions_changed
) {
1655 /* XXX should really do rule_post_uninstall() for the *old* set
1656 * of actions, and distinguish the old stats from the new. */
1657 struct odp_flow_put put
;
1658 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1661 rule_install(ofproto
, rule
, NULL
);
1664 rule_uninstall(ofproto
, rule
);
1669 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
1671 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
1673 if (ofproto
->ofhooks
->account_flow_cb
1674 && total_bytes
> rule
->accounted_bytes
)
1676 ofproto
->ofhooks
->account_flow_cb(
1677 &rule
->cr
.flow
, rule
->odp_actions
, rule
->n_odp_actions
,
1678 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
1679 rule
->accounted_bytes
= total_bytes
;
1684 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
1686 assert(!rule
->cr
.wc
.wildcards
);
1687 if (rule
->installed
) {
1688 struct odp_flow odp_flow
;
1690 odp_flow
.key
= rule
->cr
.flow
;
1691 odp_flow
.actions
= NULL
;
1692 odp_flow
.n_actions
= 0;
1693 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
1694 update_stats(rule
, &odp_flow
.stats
);
1696 rule
->installed
= false;
1698 rule_post_uninstall(p
, rule
);
1703 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
1705 struct rule
*super
= rule
->super
;
1707 rule_account(ofproto
, rule
, 0);
1708 if (ofproto
->netflow
&& rule
->byte_count
) {
1709 struct ofexpired expired
;
1710 expired
.flow
= rule
->cr
.flow
;
1711 expired
.packet_count
= rule
->packet_count
;
1712 expired
.byte_count
= rule
->byte_count
;
1713 expired
.used
= rule
->used
;
1714 expired
.created
= rule
->created
;
1715 expired
.tcp_flags
= rule
->tcp_flags
;
1716 expired
.ip_tos
= rule
->ip_tos
;
1717 netflow_expire(ofproto
->netflow
, &expired
);
1720 super
->packet_count
+= rule
->packet_count
;
1721 super
->byte_count
+= rule
->byte_count
;
1722 super
->tcp_flags
|= rule
->tcp_flags
;
1723 if (rule
->packet_count
) {
1724 super
->ip_tos
= rule
->ip_tos
;
1728 /* Reset counters to prevent double counting if the rule ever gets
1730 rule
->packet_count
= 0;
1731 rule
->byte_count
= 0;
1732 rule
->accounted_bytes
= 0;
1733 rule
->tcp_flags
= 0;
1738 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
1739 struct rconn_packet_counter
*counter
)
1741 update_openflow_length(msg
);
1742 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
1748 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1749 int error
, const void *data
, size_t len
)
1752 struct ofp_error_msg
*oem
;
1754 if (!(error
>> 16)) {
1755 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
1760 COVERAGE_INC(ofproto_error
);
1761 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
1762 oh
? oh
->xid
: 0, &buf
);
1763 oem
->type
= htons((unsigned int) error
>> 16);
1764 oem
->code
= htons(error
& 0xffff);
1765 memcpy(oem
->data
, data
, len
);
1766 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1770 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1773 size_t oh_length
= ntohs(oh
->length
);
1774 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
1778 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
1780 opp
->port_no
= htons(opp
->port_no
);
1781 opp
->config
= htonl(opp
->config
);
1782 opp
->state
= htonl(opp
->state
);
1783 opp
->curr
= htonl(opp
->curr
);
1784 opp
->advertised
= htonl(opp
->advertised
);
1785 opp
->supported
= htonl(opp
->supported
);
1786 opp
->peer
= htonl(opp
->peer
);
1790 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
1792 struct ofp_header
*rq
= oh
;
1793 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
1798 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1799 struct ofp_header
*oh
)
1801 struct ofp_switch_features
*osf
;
1803 unsigned int port_no
;
1804 struct ofport
*port
;
1806 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
1807 osf
->datapath_id
= htonll(p
->datapath_id
);
1808 osf
->n_buffers
= htonl(pktbuf_capacity());
1810 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
1811 OFPC_PORT_STATS
| OFPC_MULTI_PHY_TX
);
1812 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
1813 (1u << OFPAT_SET_VLAN_VID
) |
1814 (1u << OFPAT_SET_VLAN_PCP
) |
1815 (1u << OFPAT_STRIP_VLAN
) |
1816 (1u << OFPAT_SET_DL_SRC
) |
1817 (1u << OFPAT_SET_DL_DST
) |
1818 (1u << OFPAT_SET_NW_SRC
) |
1819 (1u << OFPAT_SET_NW_DST
) |
1820 (1u << OFPAT_SET_TP_SRC
) |
1821 (1u << OFPAT_SET_TP_DST
));
1823 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1824 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
1827 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1832 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1833 struct ofp_header
*oh
)
1836 struct ofp_switch_config
*osc
;
1840 /* Figure out flags. */
1841 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
1842 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
1843 if (ofconn
->send_flow_exp
) {
1844 flags
|= OFPC_SEND_FLOW_EXP
;
1848 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
1849 osc
->flags
= htons(flags
);
1850 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
1851 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1857 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
1858 struct ofp_switch_config
*osc
)
1863 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
1867 flags
= ntohs(osc
->flags
);
1869 ofconn
->send_flow_exp
= (flags
& OFPC_SEND_FLOW_EXP
) != 0;
1871 if (ofconn
== p
->controller
) {
1872 switch (flags
& OFPC_FRAG_MASK
) {
1873 case OFPC_FRAG_NORMAL
:
1874 dpif_set_drop_frags(p
->dpif
, false);
1876 case OFPC_FRAG_DROP
:
1877 dpif_set_drop_frags(p
->dpif
, true);
1880 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
1886 if ((ntohs(osc
->miss_send_len
) != 0) != (ofconn
->miss_send_len
!= 0)) {
1887 if (ntohs(osc
->miss_send_len
) != 0) {
1888 ofconn
->pktbuf
= pktbuf_create();
1890 pktbuf_destroy(ofconn
->pktbuf
);
1894 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
1900 add_output_group_action(struct odp_actions
*actions
, uint16_t group
)
1902 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
1906 add_controller_action(struct odp_actions
*actions
,
1907 const struct ofp_action_output
*oao
)
1909 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
1910 a
->controller
.arg
= oao
->max_len
? ntohs(oao
->max_len
) : UINT32_MAX
;
1913 struct action_xlate_ctx
{
1915 const flow_t
*flow
; /* Flow to which these actions correspond. */
1916 int recurse
; /* Recursion level, via xlate_table_action. */
1917 struct ofproto
*ofproto
;
1918 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
1919 * null pointer if we are revalidating
1920 * without a packet to refer to. */
1923 struct odp_actions
*out
; /* Datapath actions. */
1924 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
1925 bool may_setup_flow
; /* True ordinarily; false if the actions must
1926 * be reassessed for every packet. */
1929 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
1930 struct action_xlate_ctx
*ctx
);
1933 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
1935 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
1938 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
1939 /* Forwarding disabled on port. */
1944 * We don't have an ofport record for this port, but it doesn't hurt to
1945 * allow forwarding to it anyhow. Maybe such a port will appear later
1946 * and we're pre-populating the flow table.
1950 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
1953 static struct rule
*
1954 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
1957 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
1959 /* The rule we found might not be valid, since we could be in need of
1960 * revalidation. If it is not valid, don't return it. */
1963 && ofproto
->need_revalidate
1964 && !revalidate_rule(ofproto
, rule
)) {
1965 COVERAGE_INC(ofproto_invalidated
);
1973 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
1975 if (!ctx
->recurse
) {
1980 flow
.in_port
= in_port
;
1982 rule
= lookup_valid_rule(ctx
->ofproto
, &flow
);
1989 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
1996 xlate_output_action(struct action_xlate_ctx
*ctx
,
1997 const struct ofp_action_output
*oao
)
2001 switch (ntohs(oao
->port
)) {
2003 add_output_action(ctx
, ctx
->flow
->in_port
);
2006 xlate_table_action(ctx
, ctx
->flow
->in_port
);
2009 if (!ctx
->ofproto
->ofhooks
->normal_cb(ctx
->flow
, ctx
->packet
,
2010 ctx
->out
, ctx
->tags
,
2011 ctx
->ofproto
->aux
)) {
2012 COVERAGE_INC(ofproto_uninstallable
);
2013 ctx
->may_setup_flow
= false;
2017 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
);
2020 add_output_group_action(ctx
->out
, DP_GROUP_ALL
);
2022 case OFPP_CONTROLLER
:
2023 add_controller_action(ctx
->out
, oao
);
2026 add_output_action(ctx
, ODPP_LOCAL
);
2029 odp_port
= ofp_port_to_odp_port(ntohs(oao
->port
));
2030 if (odp_port
!= ctx
->flow
->in_port
) {
2031 add_output_action(ctx
, odp_port
);
2038 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2039 const struct nx_action_header
*nah
)
2041 const struct nx_action_resubmit
*nar
;
2042 int subtype
= ntohs(nah
->subtype
);
2044 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2046 case NXAST_RESUBMIT
:
2047 nar
= (const struct nx_action_resubmit
*) nah
;
2048 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2052 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2058 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2059 struct action_xlate_ctx
*ctx
)
2061 struct actions_iterator iter
;
2062 const union ofp_action
*ia
;
2063 const struct ofport
*port
;
2065 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
->in_port
);
2066 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2067 port
->opp
.config
& (eth_addr_equals(ctx
->flow
->dl_dst
, stp_eth_addr
)
2068 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2069 /* Drop this flow. */
2073 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2074 uint16_t type
= ntohs(ia
->type
);
2075 union odp_action
*oa
;
2079 xlate_output_action(ctx
, &ia
->output
);
2082 case OFPAT_SET_VLAN_VID
:
2083 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2084 oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2087 case OFPAT_SET_VLAN_PCP
:
2088 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2089 oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2092 case OFPAT_STRIP_VLAN
:
2093 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2096 case OFPAT_SET_DL_SRC
:
2097 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2098 memcpy(oa
->dl_addr
.dl_addr
,
2099 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2102 case OFPAT_SET_DL_DST
:
2103 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2104 memcpy(oa
->dl_addr
.dl_addr
,
2105 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2108 case OFPAT_SET_NW_SRC
:
2109 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2110 oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2113 case OFPAT_SET_TP_SRC
:
2114 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2115 oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2119 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2123 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2130 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2131 const flow_t
*flow
, struct ofproto
*ofproto
,
2132 const struct ofpbuf
*packet
,
2133 struct odp_actions
*out
, tag_type
*tags
, bool *may_setup_flow
)
2135 tag_type no_tags
= 0;
2136 struct action_xlate_ctx ctx
;
2137 COVERAGE_INC(ofproto_ofp2odp
);
2138 odp_actions_init(out
);
2141 ctx
.ofproto
= ofproto
;
2142 ctx
.packet
= packet
;
2144 ctx
.tags
= tags
? tags
: &no_tags
;
2145 ctx
.may_setup_flow
= true;
2146 do_xlate_actions(in
, n_in
, &ctx
);
2148 /* Check with in-band control to see if we're allowed to setup this
2150 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2151 ctx
.may_setup_flow
= false;
2154 if (may_setup_flow
) {
2155 *may_setup_flow
= ctx
.may_setup_flow
;
2157 if (odp_actions_overflow(out
)) {
2158 odp_actions_init(out
);
2159 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2165 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2166 struct ofp_header
*oh
)
2168 struct ofp_packet_out
*opo
;
2169 struct ofpbuf payload
, *buffer
;
2170 struct odp_actions actions
;
2176 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2180 opo
= (struct ofp_packet_out
*) oh
;
2182 COVERAGE_INC(ofproto_packet_out
);
2183 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2184 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2186 if (error
|| !buffer
) {
2194 flow_extract(&payload
, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2195 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2196 &flow
, p
, &payload
, &actions
, NULL
, NULL
);
2201 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2203 ofpbuf_delete(buffer
);
2209 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2210 uint32_t config
, uint32_t mask
)
2212 mask
&= config
^ port
->opp
.config
;
2213 if (mask
& OFPPC_PORT_DOWN
) {
2214 if (config
& OFPPC_PORT_DOWN
) {
2215 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2217 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2220 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2221 if (mask
& REVALIDATE_BITS
) {
2222 COVERAGE_INC(ofproto_costly_flags
);
2223 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2224 p
->need_revalidate
= true;
2226 #undef REVALIDATE_BITS
2227 if (mask
& OFPPC_NO_FLOOD
) {
2228 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2229 refresh_port_group(p
, DP_GROUP_FLOOD
);
2231 if (mask
& OFPPC_NO_PACKET_IN
) {
2232 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2237 handle_port_mod(struct ofproto
*p
, struct ofp_header
*oh
)
2239 const struct ofp_port_mod
*opm
;
2240 struct ofport
*port
;
2243 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2247 opm
= (struct ofp_port_mod
*) oh
;
2249 port
= port_array_get(&p
->ports
,
2250 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2252 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2253 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2254 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2256 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2257 if (opm
->advertise
) {
2258 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2264 static struct ofpbuf
*
2265 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2267 struct ofp_stats_reply
*osr
;
2270 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2271 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2273 osr
->flags
= htons(0);
2277 static struct ofpbuf
*
2278 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2280 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2284 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2286 struct ofpbuf
*msg
= *msgp
;
2287 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2288 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2289 struct ofp_stats_reply
*reply
= msg
->data
;
2290 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2291 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2292 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2294 return ofpbuf_put_uninit(*msgp
, nbytes
);
2298 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2299 struct ofp_stats_request
*request
)
2301 struct ofp_desc_stats
*ods
;
2304 msg
= start_stats_reply(request
, sizeof *ods
);
2305 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2306 strncpy(ods
->mfr_desc
, p
->manufacturer
, sizeof ods
->mfr_desc
);
2307 strncpy(ods
->hw_desc
, p
->hardware
, sizeof ods
->hw_desc
);
2308 strncpy(ods
->sw_desc
, p
->software
, sizeof ods
->sw_desc
);
2309 strncpy(ods
->serial_num
, p
->serial
, sizeof ods
->serial_num
);
2310 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2316 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2318 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2319 int *n_subrules
= n_subrules_
;
2327 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2328 struct ofp_stats_request
*request
)
2330 struct ofp_table_stats
*ots
;
2332 struct odp_stats dpstats
;
2333 int n_exact
, n_subrules
, n_wild
;
2335 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2337 /* Count rules of various kinds. */
2339 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2340 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2341 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2344 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2345 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2346 memset(ots
, 0, sizeof *ots
);
2347 ots
->table_id
= TABLEID_HASH
;
2348 strcpy(ots
->name
, "hash");
2349 ots
->wildcards
= htonl(0);
2350 ots
->max_entries
= htonl(dpstats
.max_capacity
);
2351 ots
->active_count
= htonl(n_exact
);
2352 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
2354 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
2356 /* Classifier table. */
2357 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2358 memset(ots
, 0, sizeof *ots
);
2359 ots
->table_id
= TABLEID_CLASSIFIER
;
2360 strcpy(ots
->name
, "classifier");
2361 ots
->wildcards
= htonl(OFPFW_ALL
);
2362 ots
->max_entries
= htonl(65536);
2363 ots
->active_count
= htonl(n_wild
);
2364 ots
->lookup_count
= htonll(0); /* XXX */
2365 ots
->matched_count
= htonll(0); /* XXX */
2367 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2372 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2373 struct ofp_stats_request
*request
)
2375 struct ofp_port_stats
*ops
;
2377 struct ofport
*port
;
2378 unsigned int port_no
;
2380 msg
= start_stats_reply(request
, sizeof *ops
* 16);
2381 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2382 struct netdev_stats stats
;
2384 /* Intentionally ignore return value, since errors will set 'stats' to
2385 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2387 netdev_get_stats(port
->netdev
, &stats
);
2389 ops
= append_stats_reply(sizeof *ops
, ofconn
, &msg
);
2390 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
2391 memset(ops
->pad
, 0, sizeof ops
->pad
);
2392 ops
->rx_packets
= htonll(stats
.rx_packets
);
2393 ops
->tx_packets
= htonll(stats
.tx_packets
);
2394 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
2395 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
2396 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
2397 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
2398 ops
->rx_errors
= htonll(stats
.rx_errors
);
2399 ops
->tx_errors
= htonll(stats
.tx_errors
);
2400 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
2401 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
2402 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
2403 ops
->collisions
= htonll(stats
.collisions
);
2406 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2410 struct flow_stats_cbdata
{
2411 struct ofproto
*ofproto
;
2412 struct ofconn
*ofconn
;
2418 query_stats(struct ofproto
*p
, struct rule
*rule
,
2419 uint64_t *packet_countp
, uint64_t *byte_countp
)
2421 uint64_t packet_count
, byte_count
;
2422 struct rule
*subrule
;
2423 struct odp_flow
*odp_flows
;
2426 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
2427 odp_flows
= xcalloc(1, n_odp_flows
* sizeof *odp_flows
);
2428 if (rule
->cr
.wc
.wildcards
) {
2430 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
2431 odp_flows
[i
++].key
= subrule
->cr
.flow
;
2434 odp_flows
[0].key
= rule
->cr
.flow
;
2437 packet_count
= rule
->packet_count
;
2438 byte_count
= rule
->byte_count
;
2439 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
2441 for (i
= 0; i
< n_odp_flows
; i
++) {
2442 struct odp_flow
*odp_flow
= &odp_flows
[i
];
2443 packet_count
+= odp_flow
->stats
.n_packets
;
2444 byte_count
+= odp_flow
->stats
.n_bytes
;
2449 *packet_countp
= packet_count
;
2450 *byte_countp
= byte_count
;
2454 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2456 struct rule
*rule
= rule_from_cls_rule(rule_
);
2457 struct flow_stats_cbdata
*cbdata
= cbdata_
;
2458 struct ofp_flow_stats
*ofs
;
2459 uint64_t packet_count
, byte_count
;
2460 size_t act_len
, len
;
2462 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2466 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2467 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
2469 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2471 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
2472 ofs
->length
= htons(len
);
2473 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
2475 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofs
->match
);
2476 ofs
->duration
= htonl((time_msec() - rule
->created
) / 1000);
2477 ofs
->priority
= htons(rule
->cr
.priority
);
2478 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
2479 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
2480 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
2481 ofs
->packet_count
= htonll(packet_count
);
2482 ofs
->byte_count
= htonll(byte_count
);
2483 memcpy(ofs
->actions
, rule
->actions
, act_len
);
2487 table_id_to_include(uint8_t table_id
)
2489 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
2490 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
2491 : table_id
== 0xff ? CLS_INC_ALL
2496 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2497 const struct ofp_stats_request
*osr
,
2500 struct ofp_flow_stats_request
*fsr
;
2501 struct flow_stats_cbdata cbdata
;
2502 struct cls_rule target
;
2504 if (arg_size
!= sizeof *fsr
) {
2505 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2507 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
2509 COVERAGE_INC(ofproto_flows_req
);
2511 cbdata
.ofconn
= ofconn
;
2512 cbdata
.out_port
= fsr
->out_port
;
2513 cbdata
.msg
= start_stats_reply(osr
, 1024);
2514 cls_rule_from_match(&target
, &fsr
->match
, 0);
2515 classifier_for_each_match(&p
->cls
, &target
,
2516 table_id_to_include(fsr
->table_id
),
2517 flow_stats_cb
, &cbdata
);
2518 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
2522 struct flow_stats_ds_cbdata
{
2523 struct ofproto
*ofproto
;
2528 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
2530 struct rule
*rule
= rule_from_cls_rule(rule_
);
2531 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
2532 struct ds
*results
= cbdata
->results
;
2533 struct ofp_match match
;
2534 uint64_t packet_count
, byte_count
;
2535 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2537 /* Don't report on subrules. */
2538 if (rule
->super
!= NULL
) {
2542 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2543 flow_to_ovs_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &match
);
2545 ds_put_format(results
, "duration=%llds, ",
2546 (time_msec() - rule
->created
) / 1000);
2547 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2548 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2549 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2550 ofp_print_match(results
, &match
, true);
2551 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
2552 ds_put_cstr(results
, "\n");
2555 /* Adds a pretty-printed description of all flows to 'results', including
2556 * those marked hidden by secchan (e.g., by in-band control). */
2558 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2560 struct ofp_match match
;
2561 struct cls_rule target
;
2562 struct flow_stats_ds_cbdata cbdata
;
2564 memset(&match
, 0, sizeof match
);
2565 match
.wildcards
= htonl(OFPFW_ALL
);
2568 cbdata
.results
= results
;
2570 cls_rule_from_match(&target
, &match
, 0);
2571 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2572 flow_stats_ds_cb
, &cbdata
);
2575 struct aggregate_stats_cbdata
{
2576 struct ofproto
*ofproto
;
2578 uint64_t packet_count
;
2579 uint64_t byte_count
;
2584 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2586 struct rule
*rule
= rule_from_cls_rule(rule_
);
2587 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
2588 uint64_t packet_count
, byte_count
;
2590 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2594 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2596 cbdata
->packet_count
+= packet_count
;
2597 cbdata
->byte_count
+= byte_count
;
2602 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2603 const struct ofp_stats_request
*osr
,
2606 struct ofp_aggregate_stats_request
*asr
;
2607 struct ofp_aggregate_stats_reply
*reply
;
2608 struct aggregate_stats_cbdata cbdata
;
2609 struct cls_rule target
;
2612 if (arg_size
!= sizeof *asr
) {
2613 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2615 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
2617 COVERAGE_INC(ofproto_agg_request
);
2619 cbdata
.out_port
= asr
->out_port
;
2620 cbdata
.packet_count
= 0;
2621 cbdata
.byte_count
= 0;
2623 cls_rule_from_match(&target
, &asr
->match
, 0);
2624 classifier_for_each_match(&p
->cls
, &target
,
2625 table_id_to_include(asr
->table_id
),
2626 aggregate_stats_cb
, &cbdata
);
2628 msg
= start_stats_reply(osr
, sizeof *reply
);
2629 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
2630 reply
->flow_count
= htonl(cbdata
.n_flows
);
2631 reply
->packet_count
= htonll(cbdata
.packet_count
);
2632 reply
->byte_count
= htonll(cbdata
.byte_count
);
2633 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2638 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2639 struct ofp_header
*oh
)
2641 struct ofp_stats_request
*osr
;
2645 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
2650 osr
= (struct ofp_stats_request
*) oh
;
2652 switch (ntohs(osr
->type
)) {
2654 return handle_desc_stats_request(p
, ofconn
, osr
);
2657 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
2659 case OFPST_AGGREGATE
:
2660 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
2663 return handle_table_stats_request(p
, ofconn
, osr
);
2666 return handle_port_stats_request(p
, ofconn
, osr
);
2669 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
2672 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
2676 static long long int
2677 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
2679 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
2683 update_time(struct rule
*rule
, const struct odp_flow_stats
*stats
)
2685 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
2686 if (used
> rule
->used
) {
2692 update_stats(struct rule
*rule
, const struct odp_flow_stats
*stats
)
2694 update_time(rule
, stats
);
2695 rule
->packet_count
+= stats
->n_packets
;
2696 rule
->byte_count
+= stats
->n_bytes
;
2697 rule
->tcp_flags
|= stats
->tcp_flags
;
2698 if (stats
->n_packets
) {
2699 rule
->ip_tos
= stats
->ip_tos
;
2704 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
2705 struct ofp_flow_mod
*ofm
, size_t n_actions
)
2707 struct ofpbuf
*packet
;
2712 rule
= rule_create(NULL
, (const union ofp_action
*) ofm
->actions
,
2713 n_actions
, ntohs(ofm
->idle_timeout
),
2714 ntohs(ofm
->hard_timeout
));
2715 cls_rule_from_match(&rule
->cr
, &ofm
->match
, ntohs(ofm
->priority
));
2719 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
2720 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
2724 rule_insert(p
, rule
, packet
, in_port
);
2725 ofpbuf_delete(packet
);
2730 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2731 size_t n_actions
, uint16_t command
, struct rule
*rule
)
2733 if (rule_is_hidden(rule
)) {
2737 if (command
== OFPFC_DELETE
) {
2738 rule_remove(p
, rule
);
2740 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
2742 if (n_actions
== rule
->n_actions
2743 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
2748 free(rule
->actions
);
2749 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
2750 rule
->n_actions
= n_actions
;
2752 if (rule
->cr
.wc
.wildcards
) {
2753 COVERAGE_INC(ofproto_mod_wc_flow
);
2754 p
->need_revalidate
= true;
2756 rule_update_actions(p
, rule
);
2764 modify_flows_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2765 size_t n_actions
, uint16_t command
)
2771 flow_from_match(&flow
, &wildcards
, &ofm
->match
);
2772 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
2773 &p
->cls
, &flow
, wildcards
,
2774 ntohs(ofm
->priority
)));
2777 if (command
== OFPFC_DELETE
2778 && ofm
->out_port
!= htons(OFPP_NONE
)
2779 && !rule_has_out_port(rule
, ofm
->out_port
)) {
2783 modify_flow(p
, ofm
, n_actions
, command
, rule
);
2788 struct modify_flows_cbdata
{
2789 struct ofproto
*ofproto
;
2790 const struct ofp_flow_mod
*ofm
;
2797 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
2799 struct rule
*rule
= rule_from_cls_rule(rule_
);
2800 struct modify_flows_cbdata
*cbdata
= cbdata_
;
2802 if (cbdata
->out_port
!= htons(OFPP_NONE
)
2803 && !rule_has_out_port(rule
, cbdata
->out_port
)) {
2807 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
,
2808 cbdata
->command
, rule
);
2812 modify_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2813 size_t n_actions
, uint16_t command
)
2815 struct modify_flows_cbdata cbdata
;
2816 struct cls_rule target
;
2820 cbdata
.out_port
= (command
== OFPFC_DELETE
? ofm
->out_port
2821 : htons(OFPP_NONE
));
2822 cbdata
.n_actions
= n_actions
;
2823 cbdata
.command
= command
;
2825 cls_rule_from_match(&target
, &ofm
->match
, 0);
2827 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2828 modify_flows_cb
, &cbdata
);
2833 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2834 struct ofp_flow_mod
*ofm
)
2839 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
2840 sizeof *ofm
->actions
, &n_actions
);
2845 normalize_match(&ofm
->match
);
2846 if (!ofm
->match
.wildcards
) {
2847 ofm
->priority
= htons(UINT16_MAX
);
2850 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
2851 n_actions
, p
->max_ports
);
2856 switch (ntohs(ofm
->command
)) {
2858 return add_flow(p
, ofconn
, ofm
, n_actions
);
2861 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_MODIFY
);
2863 case OFPFC_MODIFY_STRICT
:
2864 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_MODIFY
);
2867 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_DELETE
);
2869 case OFPFC_DELETE_STRICT
:
2870 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_DELETE
);
2873 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
2878 send_capability_reply(struct ofproto
*p
, struct ofconn
*ofconn
, uint32_t xid
)
2880 struct ofmp_capability_reply
*ocr
;
2882 char capabilities
[] = "com.nicira.mgmt.manager=false\n";
2884 ocr
= make_openflow_xid(sizeof(*ocr
), OFPT_VENDOR
, xid
, &b
);
2885 ocr
->header
.header
.vendor
= htonl(NX_VENDOR_ID
);
2886 ocr
->header
.header
.subtype
= htonl(NXT_MGMT
);
2887 ocr
->header
.type
= htons(OFMPT_CAPABILITY_REPLY
);
2889 ocr
->format
= htonl(OFMPCOF_SIMPLE
);
2890 ocr
->mgmt_id
= htonll(p
->mgmt_id
);
2892 ofpbuf_put(b
, capabilities
, strlen(capabilities
));
2894 queue_tx(b
, ofconn
, ofconn
->reply_counter
);
2898 handle_ofmp(struct ofproto
*p
, struct ofconn
*ofconn
,
2899 struct ofmp_header
*ofmph
)
2901 size_t msg_len
= ntohs(ofmph
->header
.header
.length
);
2902 if (msg_len
< sizeof(*ofmph
)) {
2903 VLOG_WARN_RL(&rl
, "dropping short managment message: %d\n", msg_len
);
2904 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2907 if (ofmph
->type
== htons(OFMPT_CAPABILITY_REQUEST
)) {
2908 struct ofmp_capability_request
*ofmpcr
;
2910 if (msg_len
< sizeof(struct ofmp_capability_request
)) {
2911 VLOG_WARN_RL(&rl
, "dropping short capability request: %d\n",
2913 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2916 ofmpcr
= (struct ofmp_capability_request
*)ofmph
;
2917 if (ofmpcr
->format
!= htonl(OFMPCAF_SIMPLE
)) {
2918 /* xxx Find a better type than bad subtype */
2919 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
2922 send_capability_reply(p
, ofconn
, ofmph
->header
.header
.xid
);
2925 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
2930 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
2932 struct ofp_vendor_header
*ovh
= msg
;
2933 struct nicira_header
*nh
;
2935 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
2936 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2938 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
2939 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
2941 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
2942 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2946 switch (ntohl(nh
->subtype
)) {
2947 case NXT_STATUS_REQUEST
:
2948 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
2951 case NXT_ACT_SET_CONFIG
:
2952 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
); /* XXX */
2954 case NXT_ACT_GET_CONFIG
:
2955 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
); /* XXX */
2957 case NXT_COMMAND_REQUEST
:
2959 return executer_handle_request(p
->executer
, ofconn
->rconn
, msg
);
2964 return handle_ofmp(p
, ofconn
, msg
);
2967 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
2971 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
2972 struct ofpbuf
*ofp_msg
)
2974 struct ofp_header
*oh
= ofp_msg
->data
;
2977 COVERAGE_INC(ofproto_recv_openflow
);
2979 case OFPT_ECHO_REQUEST
:
2980 error
= handle_echo_request(ofconn
, oh
);
2983 case OFPT_ECHO_REPLY
:
2987 case OFPT_FEATURES_REQUEST
:
2988 error
= handle_features_request(p
, ofconn
, oh
);
2991 case OFPT_GET_CONFIG_REQUEST
:
2992 error
= handle_get_config_request(p
, ofconn
, oh
);
2995 case OFPT_SET_CONFIG
:
2996 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
2999 case OFPT_PACKET_OUT
:
3000 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
3004 error
= handle_port_mod(p
, oh
);
3008 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
3011 case OFPT_STATS_REQUEST
:
3012 error
= handle_stats_request(p
, ofconn
, oh
);
3016 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
3020 if (VLOG_IS_WARN_ENABLED()) {
3021 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
3022 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
3025 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
3030 send_error_oh(ofconn
, ofp_msg
->data
, error
);
3035 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3037 struct odp_msg
*msg
= packet
->data
;
3038 uint16_t in_port
= odp_port_to_ofp_port(msg
->port
);
3040 struct ofpbuf payload
;
3043 /* Handle controller actions. */
3044 if (msg
->type
== _ODPL_ACTION_NR
) {
3045 COVERAGE_INC(ofproto_ctlr_action
);
3046 pinsched_send(p
->action_sched
, in_port
, packet
,
3047 send_packet_in_action
, p
);
3051 payload
.data
= msg
+ 1;
3052 payload
.size
= msg
->length
- sizeof *msg
;
3053 flow_extract(&payload
, msg
->port
, &flow
);
3055 /* Check with in-band control to see if this packet should be sent
3056 * to the local port regardless of the flow table. */
3057 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
3058 union odp_action action
;
3060 memset(&action
, 0, sizeof(action
));
3061 action
.output
.type
= ODPAT_OUTPUT
;
3062 action
.output
.port
= ODPP_LOCAL
;
3063 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
3066 rule
= lookup_valid_rule(p
, &flow
);
3068 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3069 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
3071 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
3072 COVERAGE_INC(ofproto_no_packet_in
);
3073 /* XXX install 'drop' flow entry */
3074 ofpbuf_delete(packet
);
3078 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
3081 COVERAGE_INC(ofproto_packet_in
);
3082 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3086 if (rule
->cr
.wc
.wildcards
) {
3087 rule
= rule_create_subrule(p
, rule
, &flow
);
3088 rule_make_actions(p
, rule
, packet
);
3090 if (!rule
->may_install
) {
3091 /* The rule is not installable, that is, we need to process every
3092 * packet, so process the current packet and set its actions into
3094 rule_make_actions(p
, rule
, packet
);
3096 /* XXX revalidate rule if it needs it */
3100 rule_execute(p
, rule
, &payload
, &flow
);
3101 rule_reinstall(p
, rule
);
3103 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
3104 && rconn_is_connected(p
->controller
->rconn
)) {
3106 * Extra-special case for fail-open mode.
3108 * We are in fail-open mode and the packet matched the fail-open rule,
3109 * but we are connected to a controller too. We should send the packet
3110 * up to the controller in the hope that it will try to set up a flow
3111 * and thereby allow us to exit fail-open.
3113 * See the top-level comment in fail-open.c for more information.
3115 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3117 ofpbuf_delete(packet
);
3122 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
3124 struct rule
*sub
= rule_from_cls_rule(sub_
);
3125 struct revalidate_cbdata
*cbdata
= cbdata_
;
3127 if (cbdata
->revalidate_all
3128 || (cbdata
->revalidate_subrules
&& sub
->super
)
3129 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
3130 revalidate_rule(cbdata
->ofproto
, sub
);
3135 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
3137 const flow_t
*flow
= &rule
->cr
.flow
;
3139 COVERAGE_INC(ofproto_revalidate_rule
);
3142 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
3144 rule_remove(p
, rule
);
3146 } else if (super
!= rule
->super
) {
3147 COVERAGE_INC(ofproto_revalidate_moved
);
3148 list_remove(&rule
->list
);
3149 list_push_back(&super
->list
, &rule
->list
);
3150 rule
->super
= super
;
3151 rule
->hard_timeout
= super
->hard_timeout
;
3152 rule
->idle_timeout
= super
->idle_timeout
;
3153 rule
->created
= super
->created
;
3158 rule_update_actions(p
, rule
);
3162 static struct ofpbuf
*
3163 compose_flow_exp(const struct rule
*rule
, long long int now
, uint8_t reason
)
3165 struct ofp_flow_expired
*ofe
;
3168 ofe
= make_openflow(sizeof *ofe
, OFPT_FLOW_EXPIRED
, &buf
);
3169 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofe
->match
);
3170 ofe
->priority
= htons(rule
->cr
.priority
);
3171 ofe
->reason
= reason
;
3172 ofe
->duration
= (now
- rule
->created
) / 1000;
3173 ofe
->packet_count
= rule
->packet_count
;
3174 ofe
->byte_count
= rule
->byte_count
;
3180 send_flow_exp(struct ofproto
*p
, struct rule
*rule
,
3181 long long int now
, uint8_t reason
)
3183 struct ofconn
*ofconn
;
3184 struct ofconn
*prev
;
3185 struct ofpbuf
*buf
= NULL
;
3187 /* We limit the maximum number of queued flow expirations it by accounting
3188 * them under the counter for replies. That works because preventing
3189 * OpenFlow requests from being processed also prevents new flows from
3190 * being added (and expiring). (It also prevents processing OpenFlow
3191 * requests that would not add new flows, so it is imperfect.) */
3194 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3195 if (ofconn
->send_flow_exp
&& rconn_is_connected(ofconn
->rconn
)) {
3197 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
3199 buf
= compose_flow_exp(rule
, now
, reason
);
3205 queue_tx(buf
, prev
, prev
->reply_counter
);
3210 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
3212 assert(rule
->installed
);
3213 assert(!rule
->cr
.wc
.wildcards
);
3216 rule_remove(ofproto
, rule
);
3218 rule_uninstall(ofproto
, rule
);
3223 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
3225 struct ofproto
*p
= p_
;
3226 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
3227 long long int hard_expire
, idle_expire
, expire
, now
;
3229 hard_expire
= (rule
->hard_timeout
3230 ? rule
->created
+ rule
->hard_timeout
* 1000
3232 idle_expire
= (rule
->idle_timeout
3233 && (rule
->super
|| list_is_empty(&rule
->list
))
3234 ? rule
->used
+ rule
->idle_timeout
* 1000
3236 expire
= MIN(hard_expire
, idle_expire
);
3237 if (expire
== LLONG_MAX
) {
3238 if (rule
->installed
&& time_msec() >= rule
->used
+ 5000) {
3239 uninstall_idle_flow(p
, rule
);
3246 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
3247 uninstall_idle_flow(p
, rule
);
3252 COVERAGE_INC(ofproto_expired
);
3253 if (rule
->cr
.wc
.wildcards
) {
3254 /* Update stats. (This code will be a no-op if the rule expired
3255 * due to an idle timeout, because in that case the rule has no
3256 * subrules left.) */
3257 struct rule
*subrule
, *next
;
3258 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
3259 rule_remove(p
, subrule
);
3263 send_flow_exp(p
, rule
, now
,
3265 ? OFPER_HARD_TIMEOUT
: OFPER_IDLE_TIMEOUT
));
3266 rule_remove(p
, rule
);
3270 update_used(struct ofproto
*p
)
3272 struct odp_flow
*flows
;
3277 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
3282 for (i
= 0; i
< n_flows
; i
++) {
3283 struct odp_flow
*f
= &flows
[i
];
3286 rule
= rule_from_cls_rule(
3287 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
3288 if (!rule
|| !rule
->installed
) {
3289 COVERAGE_INC(ofproto_unexpected_rule
);
3290 dpif_flow_del(p
->dpif
, f
);
3294 update_time(rule
, &f
->stats
);
3295 rule_account(p
, rule
, f
->stats
.n_bytes
);
3301 do_send_packet_in(struct ofconn
*ofconn
, uint32_t buffer_id
,
3302 const struct ofpbuf
*packet
, int send_len
)
3304 struct odp_msg
*msg
= packet
->data
;
3305 struct ofpbuf payload
;
3309 /* Extract packet payload from 'msg'. */
3310 payload
.data
= msg
+ 1;
3311 payload
.size
= msg
->length
- sizeof *msg
;
3313 /* Construct ofp_packet_in message. */
3314 reason
= msg
->type
== _ODPL_ACTION_NR
? OFPR_ACTION
: OFPR_NO_MATCH
;
3315 opi
= make_packet_in(buffer_id
, odp_port_to_ofp_port(msg
->port
), reason
,
3316 &payload
, send_len
);
3319 rconn_send_with_limit(ofconn
->rconn
, opi
, ofconn
->packet_in_counter
, 100);
3323 send_packet_in_action(struct ofpbuf
*packet
, void *p_
)
3325 struct ofproto
*p
= p_
;
3326 struct ofconn
*ofconn
;
3327 struct odp_msg
*msg
;
3330 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3331 if (ofconn
== p
->controller
|| ofconn
->miss_send_len
) {
3332 do_send_packet_in(ofconn
, UINT32_MAX
, packet
, msg
->arg
);
3335 ofpbuf_delete(packet
);
3339 send_packet_in_miss(struct ofpbuf
*packet
, void *p_
)
3341 struct ofproto
*p
= p_
;
3342 bool in_fail_open
= p
->fail_open
&& fail_open_is_active(p
->fail_open
);
3343 struct ofconn
*ofconn
;
3344 struct ofpbuf payload
;
3345 struct odp_msg
*msg
;
3348 payload
.data
= msg
+ 1;
3349 payload
.size
= msg
->length
- sizeof *msg
;
3350 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3351 if (ofconn
->miss_send_len
) {
3352 struct pktbuf
*pb
= ofconn
->pktbuf
;
3353 uint32_t buffer_id
= (in_fail_open
3355 : pktbuf_save(pb
, &payload
, msg
->port
));
3356 int send_len
= (buffer_id
!= UINT32_MAX
? ofconn
->miss_send_len
3358 do_send_packet_in(ofconn
, buffer_id
, packet
, send_len
);
3361 ofpbuf_delete(packet
);
3365 pick_datapath_id(const struct ofproto
*ofproto
)
3367 const struct ofport
*port
;
3369 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
3371 uint8_t ea
[ETH_ADDR_LEN
];
3374 error
= netdev_get_etheraddr(port
->netdev
, ea
);
3376 return eth_addr_to_uint64(ea
);
3378 VLOG_WARN("could not get MAC address for %s (%s)",
3379 netdev_get_name(port
->netdev
), strerror(error
));
3381 return ofproto
->fallback_dpid
;
3385 pick_fallback_dpid(void)
3387 uint8_t ea
[ETH_ADDR_LEN
];
3388 eth_addr_random(ea
);
3389 ea
[0] = 0x00; /* Set Nicira OUI. */
3392 return eth_addr_to_uint64(ea
);
3396 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
3397 struct odp_actions
*actions
, tag_type
*tags
,
3400 struct ofproto
*ofproto
= ofproto_
;
3403 /* Drop frames for reserved multicast addresses. */
3404 if (eth_addr_is_reserved(flow
->dl_dst
)) {
3408 /* Learn source MAC (but don't try to learn from revalidation). */
3409 if (packet
!= NULL
) {
3410 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
3413 /* The log messages here could actually be useful in debugging,
3414 * so keep the rate limit relatively high. */
3415 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
3416 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
3417 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
3418 ofproto_revalidate(ofproto
, rev_tag
);
3422 /* Determine output port. */
3423 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
);
3425 add_output_group_action(actions
, DP_GROUP_FLOOD
);
3426 } else if (out_port
!= flow
->in_port
) {
3427 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
3435 static const struct ofhooks default_ofhooks
= {
3437 default_normal_ofhook_cb
,