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"
38 #include "ofproto-sflow.h"
40 #include "openflow/nicira-ext.h"
41 #include "openflow/openflow.h"
42 #include "openflow/openflow-mgmt.h"
43 #include "openvswitch/datapath-protocol.h"
47 #include "poll-loop.h"
48 #include "port-array.h"
58 #include "vconn-ssl.h"
61 #define THIS_MODULE VLM_ofproto
64 #include "sflow_api.h"
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_set_up_flow
, uint16_t *nf_output_iface
);
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 tag_type tags
; /* Tags (set only by hooks). */
96 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
98 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
99 * exact-match rule (having cr.wc.wildcards of 0) generated from the
100 * wildcard rule 'super'. In this case, 'list' is an element of the
103 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
104 * a list of subrules. A super-rule with no wildcards (where
105 * cr.wc.wildcards is 0) will never have any subrules. */
111 * A subrule has no actions (it uses the super-rule's actions). */
113 union ofp_action
*actions
;
117 * A super-rule with wildcard fields never has ODP actions (since the
118 * datapath only supports exact-match flows). */
119 bool installed
; /* Installed in datapath? */
120 bool may_install
; /* True ordinarily; false if actions must
121 * be reassessed for every packet. */
123 union odp_action
*odp_actions
;
127 rule_is_hidden(const struct rule
*rule
)
129 /* Subrules are merely an implementation detail, so hide them from the
131 if (rule
->super
!= NULL
) {
135 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
136 * (e.g. by in-band control) and are intentionally hidden from the
138 if (rule
->cr
.priority
> UINT16_MAX
) {
145 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
146 const union ofp_action
*, size_t n_actions
,
147 uint16_t idle_timeout
, uint16_t hard_timeout
);
148 static void rule_free(struct rule
*);
149 static void rule_destroy(struct ofproto
*, struct rule
*);
150 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
151 static void rule_insert(struct ofproto
*, struct rule
*,
152 struct ofpbuf
*packet
, uint16_t in_port
);
153 static void rule_remove(struct ofproto
*, struct rule
*);
154 static bool rule_make_actions(struct ofproto
*, struct rule
*,
155 const struct ofpbuf
*packet
);
156 static void rule_install(struct ofproto
*, struct rule
*,
157 struct rule
*displaced_rule
);
158 static void rule_uninstall(struct ofproto
*, struct rule
*);
159 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
164 struct pktbuf
*pktbuf
;
168 struct rconn_packet_counter
*packet_in_counter
;
170 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
171 * the maximum number before we stop reading OpenFlow requests. */
172 #define OFCONN_REPLY_MAX 100
173 struct rconn_packet_counter
*reply_counter
;
176 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*);
177 static void ofconn_destroy(struct ofconn
*, struct ofproto
*);
178 static void ofconn_run(struct ofconn
*, struct ofproto
*);
179 static void ofconn_wait(struct ofconn
*);
180 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
181 struct rconn_packet_counter
*counter
);
185 uint64_t datapath_id
; /* Datapath ID. */
186 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
187 uint64_t mgmt_id
; /* Management channel identifier. */
188 char *manufacturer
; /* Manufacturer. */
189 char *hardware
; /* Hardware. */
190 char *software
; /* Software version. */
191 char *serial
; /* Serial number. */
195 struct netdev_monitor
*netdev_monitor
;
196 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
198 struct shash port_by_name
;
202 struct switch_status
*switch_status
;
203 struct status_category
*ss_cat
;
204 struct in_band
*in_band
;
205 struct discovery
*discovery
;
206 struct fail_open
*fail_open
;
207 struct pinsched
*miss_sched
, *action_sched
;
208 struct executer
*executer
;
209 struct netflow
*netflow
;
210 struct ofproto_sflow
*sflow
;
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(const struct ofproto
*);
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 ofproto
*, struct rule
*,
244 const struct odp_flow_stats
*);
245 static void expire_rule(struct cls_rule
*, void *ofproto
);
246 static void active_timeout(struct ofproto
*ofproto
, struct rule
*rule
);
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_groups(struct ofproto
*);
257 static void update_port(struct ofproto
*, const char *devname
);
258 static int init_ports(struct ofproto
*);
259 static void reinit_ports(struct ofproto
*);
262 ofproto_create(const char *datapath
, const struct ofhooks
*ofhooks
, void *aux
,
263 struct ofproto
**ofprotop
)
265 struct odp_stats stats
;
272 /* Connect to datapath and start listening for messages. */
273 error
= dpif_open(datapath
, &dpif
);
275 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
278 error
= dpif_get_dp_stats(dpif
, &stats
);
280 VLOG_ERR("failed to obtain stats for datapath %s: %s",
281 datapath
, strerror(error
));
285 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
287 VLOG_ERR("failed to listen on datapath %s: %s",
288 datapath
, strerror(error
));
292 dpif_flow_flush(dpif
);
293 dpif_recv_purge(dpif
);
295 /* Initialize settings. */
296 p
= xcalloc(1, sizeof *p
);
297 p
->fallback_dpid
= pick_fallback_dpid();
298 p
->datapath_id
= p
->fallback_dpid
;
299 p
->manufacturer
= xstrdup("Nicira Networks, Inc.");
300 p
->hardware
= xstrdup("Reference Implementation");
301 p
->software
= xstrdup(VERSION BUILDNR
);
302 p
->serial
= xstrdup("None");
304 /* Initialize datapath. */
306 p
->netdev_monitor
= netdev_monitor_create();
307 port_array_init(&p
->ports
);
308 shash_init(&p
->port_by_name
);
309 p
->max_ports
= stats
.max_ports
;
311 /* Initialize submodules. */
312 p
->switch_status
= switch_status_create(p
);
316 p
->miss_sched
= p
->action_sched
= NULL
;
321 /* Initialize flow table. */
322 classifier_init(&p
->cls
);
323 p
->need_revalidate
= false;
324 p
->next_expiration
= time_msec() + 1000;
325 tag_set_init(&p
->revalidate_set
);
327 /* Initialize OpenFlow connections. */
328 list_init(&p
->all_conns
);
329 p
->controller
= ofconn_create(p
, rconn_create(5, 8));
330 p
->controller
->pktbuf
= pktbuf_create();
331 p
->controller
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
337 /* Initialize hooks. */
339 p
->ofhooks
= ofhooks
;
343 p
->ofhooks
= &default_ofhooks
;
345 p
->ml
= mac_learning_create();
348 /* Register switch status category. */
349 p
->ss_cat
= switch_status_register(p
->switch_status
, "remote",
350 rconn_status_cb
, p
->controller
->rconn
);
353 error
= init_ports(p
);
359 /* Pick final datapath ID. */
360 p
->datapath_id
= pick_datapath_id(p
);
361 VLOG_INFO("using datapath ID %012"PRIx64
, p
->datapath_id
);
368 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
370 uint64_t old_dpid
= p
->datapath_id
;
371 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
372 if (p
->datapath_id
!= old_dpid
) {
373 VLOG_INFO("datapath ID changed to %012"PRIx64
, p
->datapath_id
);
374 rconn_reconnect(p
->controller
->rconn
);
379 ofproto_set_mgmt_id(struct ofproto
*p
, uint64_t mgmt_id
)
381 p
->mgmt_id
= mgmt_id
;
385 ofproto_set_probe_interval(struct ofproto
*p
, int probe_interval
)
387 probe_interval
= probe_interval
? MAX(probe_interval
, 5) : 0;
388 rconn_set_probe_interval(p
->controller
->rconn
, probe_interval
);
390 int trigger_duration
= probe_interval
? probe_interval
* 3 : 15;
391 fail_open_set_trigger_duration(p
->fail_open
, trigger_duration
);
396 ofproto_set_max_backoff(struct ofproto
*p
, int max_backoff
)
398 rconn_set_max_backoff(p
->controller
->rconn
, max_backoff
);
402 ofproto_set_desc(struct ofproto
*p
,
403 const char *manufacturer
, const char *hardware
,
404 const char *software
, const char *serial
)
407 free(p
->manufacturer
);
408 p
->manufacturer
= xstrdup(manufacturer
);
412 p
->hardware
= xstrdup(hardware
);
416 p
->software
= xstrdup(software
);
420 p
->serial
= xstrdup(serial
);
425 ofproto_set_in_band(struct ofproto
*p
, bool in_band
)
427 if (in_band
!= (p
->in_band
!= NULL
)) {
429 return in_band_create(p
, p
->dpif
, p
->switch_status
,
430 p
->controller
->rconn
, &p
->in_band
);
432 ofproto_set_discovery(p
, false, NULL
, true);
433 in_band_destroy(p
->in_band
);
436 rconn_reconnect(p
->controller
->rconn
);
442 ofproto_set_discovery(struct ofproto
*p
, bool discovery
,
443 const char *re
, bool update_resolv_conf
)
445 if (discovery
!= (p
->discovery
!= NULL
)) {
447 int error
= ofproto_set_in_band(p
, true);
451 error
= discovery_create(re
, update_resolv_conf
,
452 p
->dpif
, p
->switch_status
,
458 discovery_destroy(p
->discovery
);
461 rconn_disconnect(p
->controller
->rconn
);
462 } else if (discovery
) {
463 discovery_set_update_resolv_conf(p
->discovery
, update_resolv_conf
);
464 return discovery_set_accept_controller_re(p
->discovery
, re
);
470 ofproto_set_controller(struct ofproto
*ofproto
, const char *controller
)
472 if (ofproto
->discovery
) {
474 } else if (controller
) {
475 if (strcmp(rconn_get_name(ofproto
->controller
->rconn
), controller
)) {
476 return rconn_connect(ofproto
->controller
->rconn
, controller
);
481 rconn_disconnect(ofproto
->controller
->rconn
);
487 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
488 const struct svec
*svec
)
490 struct pvconn
**pvconns
= *pvconnsp
;
491 size_t n_pvconns
= *n_pvconnsp
;
495 for (i
= 0; i
< n_pvconns
; i
++) {
496 pvconn_close(pvconns
[i
]);
500 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
502 for (i
= 0; i
< svec
->n
; i
++) {
503 const char *name
= svec
->names
[i
];
504 struct pvconn
*pvconn
;
507 error
= pvconn_open(name
, &pvconn
);
509 pvconns
[n_pvconns
++] = pvconn
;
511 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
519 *n_pvconnsp
= n_pvconns
;
525 ofproto_set_listeners(struct ofproto
*ofproto
, const struct svec
*listeners
)
527 return set_pvconns(&ofproto
->listeners
, &ofproto
->n_listeners
, listeners
);
531 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
533 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
537 ofproto_set_netflow(struct ofproto
*ofproto
,
538 const struct netflow_options
*nf_options
)
540 if (nf_options
->collectors
.n
) {
541 if (!ofproto
->netflow
) {
542 ofproto
->netflow
= netflow_create();
544 return netflow_set_options(ofproto
->netflow
, nf_options
);
546 netflow_destroy(ofproto
->netflow
);
547 ofproto
->netflow
= NULL
;
553 ofproto_set_sflow(struct ofproto
*ofproto
,
554 const struct ofproto_sflow_options
*oso
)
556 struct ofproto_sflow
*os
= ofproto
->sflow
;
559 struct ofport
*ofport
;
560 unsigned int odp_port
;
562 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
563 refresh_port_groups(ofproto
);
564 PORT_ARRAY_FOR_EACH (ofport
, &ofproto
->ports
, odp_port
) {
565 ofproto_sflow_add_port(os
, odp_port
,
566 netdev_get_name(ofport
->netdev
));
569 ofproto_sflow_set_options(os
, oso
);
571 ofproto_sflow_destroy(os
);
572 ofproto
->sflow
= NULL
;
577 ofproto_set_failure(struct ofproto
*ofproto
, bool fail_open
)
580 struct rconn
*rconn
= ofproto
->controller
->rconn
;
581 int trigger_duration
= rconn_get_probe_interval(rconn
) * 3;
582 if (!ofproto
->fail_open
) {
583 ofproto
->fail_open
= fail_open_create(ofproto
, trigger_duration
,
584 ofproto
->switch_status
,
587 fail_open_set_trigger_duration(ofproto
->fail_open
,
591 fail_open_destroy(ofproto
->fail_open
);
592 ofproto
->fail_open
= NULL
;
597 ofproto_set_rate_limit(struct ofproto
*ofproto
,
598 int rate_limit
, int burst_limit
)
600 if (rate_limit
> 0) {
601 if (!ofproto
->miss_sched
) {
602 ofproto
->miss_sched
= pinsched_create(rate_limit
, burst_limit
,
603 ofproto
->switch_status
);
604 ofproto
->action_sched
= pinsched_create(rate_limit
, burst_limit
,
607 pinsched_set_limits(ofproto
->miss_sched
, rate_limit
, burst_limit
);
608 pinsched_set_limits(ofproto
->action_sched
,
609 rate_limit
, burst_limit
);
612 pinsched_destroy(ofproto
->miss_sched
);
613 ofproto
->miss_sched
= NULL
;
614 pinsched_destroy(ofproto
->action_sched
);
615 ofproto
->action_sched
= NULL
;
620 ofproto_set_stp(struct ofproto
*ofproto UNUSED
, bool enable_stp
)
624 VLOG_WARN("STP is not yet implemented");
632 ofproto_set_remote_execution(struct ofproto
*ofproto
, const char *command_acl
,
633 const char *command_dir
)
636 if (!ofproto
->executer
) {
637 return executer_create(command_acl
, command_dir
,
640 executer_set_acl(ofproto
->executer
, command_acl
, command_dir
);
643 executer_destroy(ofproto
->executer
);
644 ofproto
->executer
= NULL
;
650 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
652 return ofproto
->datapath_id
;
656 ofproto_get_mgmt_id(const struct ofproto
*ofproto
)
658 return ofproto
->mgmt_id
;
662 ofproto_get_probe_interval(const struct ofproto
*ofproto
)
664 return rconn_get_probe_interval(ofproto
->controller
->rconn
);
668 ofproto_get_max_backoff(const struct ofproto
*ofproto
)
670 return rconn_get_max_backoff(ofproto
->controller
->rconn
);
674 ofproto_get_in_band(const struct ofproto
*ofproto
)
676 return ofproto
->in_band
!= NULL
;
680 ofproto_get_discovery(const struct ofproto
*ofproto
)
682 return ofproto
->discovery
!= NULL
;
686 ofproto_get_controller(const struct ofproto
*ofproto
)
688 return rconn_get_name(ofproto
->controller
->rconn
);
692 ofproto_get_listeners(const struct ofproto
*ofproto
, struct svec
*listeners
)
696 for (i
= 0; i
< ofproto
->n_listeners
; i
++) {
697 svec_add(listeners
, pvconn_get_name(ofproto
->listeners
[i
]));
702 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
706 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
707 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
712 ofproto_destroy(struct ofproto
*p
)
714 struct ofconn
*ofconn
, *next_ofconn
;
715 struct ofport
*ofport
;
716 unsigned int port_no
;
723 ofproto_flush_flows(p
);
724 classifier_destroy(&p
->cls
);
726 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
728 ofconn_destroy(ofconn
, p
);
732 netdev_monitor_destroy(p
->netdev_monitor
);
733 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
736 shash_destroy(&p
->port_by_name
);
738 switch_status_destroy(p
->switch_status
);
739 in_band_destroy(p
->in_band
);
740 discovery_destroy(p
->discovery
);
741 fail_open_destroy(p
->fail_open
);
742 pinsched_destroy(p
->miss_sched
);
743 pinsched_destroy(p
->action_sched
);
744 executer_destroy(p
->executer
);
745 netflow_destroy(p
->netflow
);
746 ofproto_sflow_destroy(p
->sflow
);
748 switch_status_unregister(p
->ss_cat
);
750 for (i
= 0; i
< p
->n_listeners
; i
++) {
751 pvconn_close(p
->listeners
[i
]);
755 for (i
= 0; i
< p
->n_snoops
; i
++) {
756 pvconn_close(p
->snoops
[i
]);
760 mac_learning_destroy(p
->ml
);
766 ofproto_run(struct ofproto
*p
)
768 int error
= ofproto_run1(p
);
770 error
= ofproto_run2(p
, false);
776 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
778 if (error
== ENOBUFS
) {
779 reinit_ports(ofproto
);
781 update_port(ofproto
, devname
);
787 ofproto_run1(struct ofproto
*p
)
789 struct ofconn
*ofconn
, *next_ofconn
;
794 for (i
= 0; i
< 50; i
++) {
798 error
= dpif_recv(p
->dpif
, &buf
);
800 if (error
== ENODEV
) {
801 /* Someone destroyed the datapath behind our back. The caller
802 * better destroy us and give up, because we're just going to
803 * spin from here on out. */
804 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
805 VLOG_ERR_RL(&rl
, "%s: datapath was destroyed externally",
812 handle_odp_msg(p
, buf
);
815 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
816 process_port_change(p
, error
, devname
);
818 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
819 &devname
)) != EAGAIN
) {
820 process_port_change(p
, error
, devname
);
824 in_band_run(p
->in_band
);
827 char *controller_name
;
828 if (rconn_is_connectivity_questionable(p
->controller
->rconn
)) {
829 discovery_question_connectivity(p
->discovery
);
831 if (discovery_run(p
->discovery
, &controller_name
)) {
832 if (controller_name
) {
833 rconn_connect(p
->controller
->rconn
, controller_name
);
835 rconn_disconnect(p
->controller
->rconn
);
839 pinsched_run(p
->miss_sched
, send_packet_in_miss
, p
);
840 pinsched_run(p
->action_sched
, send_packet_in_action
, p
);
842 executer_run(p
->executer
);
845 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
847 ofconn_run(ofconn
, p
);
850 /* Fail-open maintenance. Do this after processing the ofconns since
851 * fail-open checks the status of the controller rconn. */
853 fail_open_run(p
->fail_open
);
856 for (i
= 0; i
< p
->n_listeners
; i
++) {
860 retval
= pvconn_accept(p
->listeners
[i
], OFP_VERSION
, &vconn
);
862 ofconn_create(p
, rconn_new_from_vconn("passive", vconn
));
863 } else if (retval
!= EAGAIN
) {
864 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
868 for (i
= 0; i
< p
->n_snoops
; i
++) {
872 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
874 rconn_add_monitor(p
->controller
->rconn
, vconn
);
875 } else if (retval
!= EAGAIN
) {
876 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
880 if (time_msec() >= p
->next_expiration
) {
881 COVERAGE_INC(ofproto_expiration
);
882 p
->next_expiration
= time_msec() + 1000;
885 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
887 /* Let the hook know that we're at a stable point: all outstanding data
888 * in existing flows has been accounted to the account_cb. Thus, the
889 * hook can now reasonably do operations that depend on having accurate
890 * flow volume accounting (currently, that's just bond rebalancing). */
891 if (p
->ofhooks
->account_checkpoint_cb
) {
892 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
897 netflow_run(p
->netflow
);
900 ofproto_sflow_run(p
->sflow
);
906 struct revalidate_cbdata
{
907 struct ofproto
*ofproto
;
908 bool revalidate_all
; /* Revalidate all exact-match rules? */
909 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
910 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
914 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
916 if (p
->need_revalidate
|| revalidate_all
917 || !tag_set_is_empty(&p
->revalidate_set
)) {
918 struct revalidate_cbdata cbdata
;
920 cbdata
.revalidate_all
= revalidate_all
;
921 cbdata
.revalidate_subrules
= p
->need_revalidate
;
922 cbdata
.revalidate_set
= p
->revalidate_set
;
923 tag_set_init(&p
->revalidate_set
);
924 COVERAGE_INC(ofproto_revalidate
);
925 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
926 p
->need_revalidate
= false;
933 ofproto_wait(struct ofproto
*p
)
935 struct ofconn
*ofconn
;
938 dpif_recv_wait(p
->dpif
);
939 dpif_port_poll_wait(p
->dpif
);
940 netdev_monitor_poll_wait(p
->netdev_monitor
);
941 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
945 in_band_wait(p
->in_band
);
948 discovery_wait(p
->discovery
);
951 fail_open_wait(p
->fail_open
);
953 pinsched_wait(p
->miss_sched
);
954 pinsched_wait(p
->action_sched
);
956 executer_wait(p
->executer
);
959 ofproto_sflow_wait(p
->sflow
);
961 if (!tag_set_is_empty(&p
->revalidate_set
)) {
962 poll_immediate_wake();
964 if (p
->need_revalidate
) {
965 /* Shouldn't happen, but if it does just go around again. */
966 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
967 poll_immediate_wake();
968 } else if (p
->next_expiration
!= LLONG_MAX
) {
969 poll_timer_wait(p
->next_expiration
- time_msec());
971 for (i
= 0; i
< p
->n_listeners
; i
++) {
972 pvconn_wait(p
->listeners
[i
]);
974 for (i
= 0; i
< p
->n_snoops
; i
++) {
975 pvconn_wait(p
->snoops
[i
]);
980 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
982 tag_set_add(&ofproto
->revalidate_set
, tag
);
986 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
988 return &ofproto
->revalidate_set
;
992 ofproto_is_alive(const struct ofproto
*p
)
994 return p
->discovery
|| rconn_is_alive(p
->controller
->rconn
);
998 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
999 const union ofp_action
*actions
, size_t n_actions
,
1000 const struct ofpbuf
*packet
)
1002 struct odp_actions odp_actions
;
1005 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1011 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1013 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
1014 odp_actions
.n_actions
, packet
);
1019 ofproto_add_flow(struct ofproto
*p
,
1020 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
1021 const union ofp_action
*actions
, size_t n_actions
,
1025 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1026 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */, 0);
1027 cls_rule_from_flow(&rule
->cr
, flow
, wildcards
, priority
);
1028 rule_insert(p
, rule
, NULL
, 0);
1032 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1033 uint32_t wildcards
, unsigned int priority
)
1037 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1041 rule_remove(ofproto
, rule
);
1046 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1048 struct rule
*rule
= rule_from_cls_rule(rule_
);
1049 struct ofproto
*ofproto
= ofproto_
;
1051 /* Mark the flow as not installed, even though it might really be
1052 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1053 * There is no point in uninstalling it individually since we are about to
1054 * blow away all the flows with dpif_flow_flush(). */
1055 rule
->installed
= false;
1057 rule_remove(ofproto
, rule
);
1061 ofproto_flush_flows(struct ofproto
*ofproto
)
1063 COVERAGE_INC(ofproto_flush
);
1064 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1065 dpif_flow_flush(ofproto
->dpif
);
1066 if (ofproto
->in_band
) {
1067 in_band_flushed(ofproto
->in_band
);
1069 if (ofproto
->fail_open
) {
1070 fail_open_flushed(ofproto
->fail_open
);
1075 reinit_ports(struct ofproto
*p
)
1077 struct svec devnames
;
1078 struct ofport
*ofport
;
1079 unsigned int port_no
;
1080 struct odp_port
*odp_ports
;
1084 svec_init(&devnames
);
1085 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1086 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1088 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1089 for (i
= 0; i
< n_odp_ports
; i
++) {
1090 svec_add (&devnames
, odp_ports
[i
].devname
);
1094 svec_sort_unique(&devnames
);
1095 for (i
= 0; i
< devnames
.n
; i
++) {
1096 update_port(p
, devnames
.names
[i
]);
1098 svec_destroy(&devnames
);
1102 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1106 struct ofport
*port
;
1107 unsigned int port_no
;
1109 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1111 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1113 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1114 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1115 ports
[n_ports
++] = port_no
;
1118 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1125 refresh_port_groups(struct ofproto
*p
)
1127 size_t n_flood
= refresh_port_group(p
, DP_GROUP_FLOOD
);
1128 size_t n_all
= refresh_port_group(p
, DP_GROUP_ALL
);
1130 ofproto_sflow_set_group_sizes(p
->sflow
, n_flood
, n_all
);
1134 static struct ofport
*
1135 make_ofport(const struct odp_port
*odp_port
)
1137 enum netdev_flags flags
;
1138 struct ofport
*ofport
;
1139 struct netdev
*netdev
;
1143 error
= netdev_open(odp_port
->devname
, NETDEV_ETH_TYPE_NONE
, &netdev
);
1145 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1146 "cannot be opened (%s)",
1147 odp_port
->devname
, odp_port
->port
,
1148 odp_port
->devname
, strerror(error
));
1152 ofport
= xmalloc(sizeof *ofport
);
1153 ofport
->netdev
= netdev
;
1154 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1155 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1156 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1157 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1158 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1160 netdev_get_flags(netdev
, &flags
);
1161 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1163 netdev_get_carrier(netdev
, &carrier
);
1164 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1166 netdev_get_features(netdev
,
1167 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1168 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1173 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1175 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1176 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1179 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1180 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1189 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1191 const struct ofp_phy_port
*a
= &a_
->opp
;
1192 const struct ofp_phy_port
*b
= &b_
->opp
;
1194 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1195 return (a
->port_no
== b
->port_no
1196 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1197 && !strcmp((char *) a
->name
, (char *) b
->name
)
1198 && a
->state
== b
->state
1199 && a
->config
== b
->config
1200 && a
->curr
== b
->curr
1201 && a
->advertised
== b
->advertised
1202 && a
->supported
== b
->supported
1203 && a
->peer
== b
->peer
);
1207 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1210 /* XXX Should limit the number of queued port status change messages. */
1211 struct ofconn
*ofconn
;
1212 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1213 struct ofp_port_status
*ops
;
1216 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1217 ops
->reason
= reason
;
1218 ops
->desc
= ofport
->opp
;
1219 hton_ofp_phy_port(&ops
->desc
);
1220 queue_tx(b
, ofconn
, NULL
);
1222 if (p
->ofhooks
->port_changed_cb
) {
1223 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1228 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1230 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1231 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1233 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1234 port_array_set(&p
->ports
, odp_port
, ofport
);
1235 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1237 ofproto_sflow_add_port(p
->sflow
, odp_port
, netdev_name
);
1242 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1244 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1246 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1247 port_array_set(&p
->ports
, odp_port
, NULL
);
1248 shash_delete(&p
->port_by_name
,
1249 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1251 ofproto_sflow_del_port(p
->sflow
, odp_port
);
1256 ofport_free(struct ofport
*ofport
)
1259 netdev_close(ofport
->netdev
);
1265 update_port(struct ofproto
*p
, const char *devname
)
1267 struct odp_port odp_port
;
1268 struct ofport
*old_ofport
;
1269 struct ofport
*new_ofport
;
1272 COVERAGE_INC(ofproto_update_port
);
1274 /* Query the datapath for port information. */
1275 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1277 /* Find the old ofport. */
1278 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1281 /* There's no port named 'devname' but there might be a port with
1282 * the same port number. This could happen if a port is deleted
1283 * and then a new one added in its place very quickly, or if a port
1284 * is renamed. In the former case we want to send an OFPPR_DELETE
1285 * and an OFPPR_ADD, and in the latter case we want to send a
1286 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1287 * the old port's ifindex against the new port, or perhaps less
1288 * reliably but more portably by comparing the old port's MAC
1289 * against the new port's MAC. However, this code isn't that smart
1290 * and always sends an OFPPR_MODIFY (XXX). */
1291 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1293 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1294 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1295 "%s", strerror(error
));
1299 /* Create a new ofport. */
1300 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1302 /* Eliminate a few pathological cases. */
1303 if (!old_ofport
&& !new_ofport
) {
1305 } else if (old_ofport
&& new_ofport
) {
1306 /* Most of the 'config' bits are OpenFlow soft state, but
1307 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1308 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1309 * leaves the other bits 0.) */
1310 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1312 if (ofport_equal(old_ofport
, new_ofport
)) {
1313 /* False alarm--no change. */
1314 ofport_free(new_ofport
);
1319 /* Now deal with the normal cases. */
1321 ofport_remove(p
, old_ofport
);
1324 ofport_install(p
, new_ofport
);
1326 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1327 (!old_ofport
? OFPPR_ADD
1328 : !new_ofport
? OFPPR_DELETE
1330 ofport_free(old_ofport
);
1332 /* Update port groups. */
1333 refresh_port_groups(p
);
1337 init_ports(struct ofproto
*p
)
1339 struct odp_port
*ports
;
1344 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1349 for (i
= 0; i
< n_ports
; i
++) {
1350 const struct odp_port
*odp_port
= &ports
[i
];
1351 if (!ofport_conflicts(p
, odp_port
)) {
1352 struct ofport
*ofport
= make_ofport(odp_port
);
1354 ofport_install(p
, ofport
);
1359 refresh_port_groups(p
);
1363 static struct ofconn
*
1364 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
)
1366 struct ofconn
*ofconn
= xmalloc(sizeof *ofconn
);
1367 list_push_back(&p
->all_conns
, &ofconn
->node
);
1368 ofconn
->rconn
= rconn
;
1369 ofconn
->pktbuf
= NULL
;
1370 ofconn
->send_flow_exp
= false;
1371 ofconn
->miss_send_len
= 0;
1372 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1373 ofconn
->reply_counter
= rconn_packet_counter_create ();
1378 ofconn_destroy(struct ofconn
*ofconn
, struct ofproto
*p
)
1381 executer_rconn_closing(p
->executer
, ofconn
->rconn
);
1384 list_remove(&ofconn
->node
);
1385 rconn_destroy(ofconn
->rconn
);
1386 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1387 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1388 pktbuf_destroy(ofconn
->pktbuf
);
1393 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1397 rconn_run(ofconn
->rconn
);
1399 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1400 /* Limit the number of iterations to prevent other tasks from
1402 for (iteration
= 0; iteration
< 50; iteration
++) {
1403 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1408 fail_open_maybe_recover(p
->fail_open
);
1410 handle_openflow(ofconn
, p
, of_msg
);
1411 ofpbuf_delete(of_msg
);
1415 if (ofconn
!= p
->controller
&& !rconn_is_alive(ofconn
->rconn
)) {
1416 ofconn_destroy(ofconn
, p
);
1421 ofconn_wait(struct ofconn
*ofconn
)
1423 rconn_run_wait(ofconn
->rconn
);
1424 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1425 rconn_recv_wait(ofconn
->rconn
);
1427 COVERAGE_INC(ofproto_ofconn_stuck
);
1431 /* Caller is responsible for initializing the 'cr' member of the returned
1433 static struct rule
*
1434 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1435 const union ofp_action
*actions
, size_t n_actions
,
1436 uint16_t idle_timeout
, uint16_t hard_timeout
)
1438 struct rule
*rule
= xcalloc(1, sizeof *rule
);
1439 rule
->idle_timeout
= idle_timeout
;
1440 rule
->hard_timeout
= hard_timeout
;
1441 rule
->used
= rule
->created
= time_msec();
1442 rule
->super
= super
;
1444 list_push_back(&super
->list
, &rule
->list
);
1446 list_init(&rule
->list
);
1448 rule
->n_actions
= n_actions
;
1449 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1450 netflow_flow_clear(&rule
->nf_flow
);
1451 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1456 static struct rule
*
1457 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1459 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1463 rule_free(struct rule
*rule
)
1465 free(rule
->actions
);
1466 free(rule
->odp_actions
);
1470 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1471 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1472 * through all of its subrules and revalidates them, destroying any that no
1473 * longer has a super-rule (which is probably all of them).
1475 * Before calling this function, the caller must make have removed 'rule' from
1476 * the classifier. If 'rule' is an exact-match rule, the caller is also
1477 * responsible for ensuring that it has been uninstalled from the datapath. */
1479 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1482 struct rule
*subrule
, *next
;
1483 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1484 revalidate_rule(ofproto
, subrule
);
1487 list_remove(&rule
->list
);
1493 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1495 const union ofp_action
*oa
;
1496 struct actions_iterator i
;
1498 if (out_port
== htons(OFPP_NONE
)) {
1501 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1502 oa
= actions_next(&i
)) {
1503 if (oa
->type
== htons(OFPAT_OUTPUT
) && oa
->output
.port
== out_port
) {
1510 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1511 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1513 * The flow that 'packet' actually contains does not need to actually match
1514 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1515 * the packet and byte counters for 'rule' will be credited for the packet sent
1516 * out whether or not the packet actually matches 'rule'.
1518 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1519 * the caller must already have accurately composed ODP actions for it given
1520 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1521 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1522 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1523 * actions and apply them to 'packet'. */
1525 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1526 struct ofpbuf
*packet
, const flow_t
*flow
)
1528 const union odp_action
*actions
;
1530 struct odp_actions a
;
1532 /* Grab or compose the ODP actions.
1534 * The special case for an exact-match 'rule' where 'flow' is not the
1535 * rule's flow is important to avoid, e.g., sending a packet out its input
1536 * port simply because the ODP actions were composed for the wrong
1538 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1539 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1540 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1541 packet
, &a
, NULL
, 0, NULL
)) {
1544 actions
= a
.actions
;
1545 n_actions
= a
.n_actions
;
1547 actions
= rule
->odp_actions
;
1548 n_actions
= rule
->n_odp_actions
;
1551 /* Execute the ODP actions. */
1552 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1553 actions
, n_actions
, packet
)) {
1554 struct odp_flow_stats stats
;
1555 flow_extract_stats(flow
, packet
, &stats
);
1556 update_stats(ofproto
, rule
, &stats
);
1557 rule
->used
= time_msec();
1558 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
1563 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
1566 struct rule
*displaced_rule
;
1568 /* Insert the rule in the classifier. */
1569 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
1570 if (!rule
->cr
.wc
.wildcards
) {
1571 rule_make_actions(p
, rule
, packet
);
1574 /* Send the packet and credit it to the rule. */
1577 flow_extract(packet
, in_port
, &flow
);
1578 rule_execute(p
, rule
, packet
, &flow
);
1581 /* Install the rule in the datapath only after sending the packet, to
1582 * avoid packet reordering. */
1583 if (rule
->cr
.wc
.wildcards
) {
1584 COVERAGE_INC(ofproto_add_wc_flow
);
1585 p
->need_revalidate
= true;
1587 rule_install(p
, rule
, displaced_rule
);
1590 /* Free the rule that was displaced, if any. */
1591 if (displaced_rule
) {
1592 rule_destroy(p
, displaced_rule
);
1596 static struct rule
*
1597 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
1600 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
1601 rule
->idle_timeout
, rule
->hard_timeout
);
1602 COVERAGE_INC(ofproto_subrule_create
);
1603 cls_rule_from_flow(&subrule
->cr
, flow
, 0,
1604 (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
1605 : rule
->cr
.priority
));
1606 classifier_insert_exact(&ofproto
->cls
, &subrule
->cr
);
1612 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
1614 if (rule
->cr
.wc
.wildcards
) {
1615 COVERAGE_INC(ofproto_del_wc_flow
);
1616 ofproto
->need_revalidate
= true;
1618 rule_uninstall(ofproto
, rule
);
1620 classifier_remove(&ofproto
->cls
, &rule
->cr
);
1621 rule_destroy(ofproto
, rule
);
1624 /* Returns true if the actions changed, false otherwise. */
1626 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
1627 const struct ofpbuf
*packet
)
1629 const struct rule
*super
;
1630 struct odp_actions a
;
1633 assert(!rule
->cr
.wc
.wildcards
);
1635 super
= rule
->super
? rule
->super
: rule
;
1637 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
1638 packet
, &a
, &rule
->tags
, &rule
->may_install
,
1639 &rule
->nf_flow
.output_iface
);
1641 actions_len
= a
.n_actions
* sizeof *a
.actions
;
1642 if (rule
->n_odp_actions
!= a
.n_actions
1643 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
1644 COVERAGE_INC(ofproto_odp_unchanged
);
1645 free(rule
->odp_actions
);
1646 rule
->n_odp_actions
= a
.n_actions
;
1647 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
1655 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
1656 struct odp_flow_put
*put
)
1658 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
1659 put
->flow
.key
= rule
->cr
.flow
;
1660 put
->flow
.actions
= rule
->odp_actions
;
1661 put
->flow
.n_actions
= rule
->n_odp_actions
;
1663 return dpif_flow_put(ofproto
->dpif
, put
);
1667 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
1669 assert(!rule
->cr
.wc
.wildcards
);
1671 if (rule
->may_install
) {
1672 struct odp_flow_put put
;
1673 if (!do_put_flow(p
, rule
,
1674 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
1676 rule
->installed
= true;
1677 if (displaced_rule
) {
1678 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
1679 rule_post_uninstall(p
, displaced_rule
);
1682 } else if (displaced_rule
) {
1683 rule_uninstall(p
, displaced_rule
);
1688 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
1690 if (rule
->installed
) {
1691 struct odp_flow_put put
;
1692 COVERAGE_INC(ofproto_dp_missed
);
1693 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1695 rule_install(ofproto
, rule
, NULL
);
1700 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
1702 bool actions_changed
;
1703 uint16_t new_out_iface
, old_out_iface
;
1705 old_out_iface
= rule
->nf_flow
.output_iface
;
1706 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
1708 if (rule
->may_install
) {
1709 if (rule
->installed
) {
1710 if (actions_changed
) {
1711 struct odp_flow_put put
;
1712 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
1713 | ODPPF_ZERO_STATS
, &put
);
1714 update_stats(ofproto
, rule
, &put
.flow
.stats
);
1716 /* Temporarily set the old output iface so that NetFlow
1717 * messages have the correct output interface for the old
1719 new_out_iface
= rule
->nf_flow
.output_iface
;
1720 rule
->nf_flow
.output_iface
= old_out_iface
;
1721 rule_post_uninstall(ofproto
, rule
);
1722 rule
->nf_flow
.output_iface
= new_out_iface
;
1725 rule_install(ofproto
, rule
, NULL
);
1728 rule_uninstall(ofproto
, rule
);
1733 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
1735 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
1737 if (ofproto
->ofhooks
->account_flow_cb
1738 && total_bytes
> rule
->accounted_bytes
)
1740 ofproto
->ofhooks
->account_flow_cb(
1741 &rule
->cr
.flow
, rule
->odp_actions
, rule
->n_odp_actions
,
1742 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
1743 rule
->accounted_bytes
= total_bytes
;
1748 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
1750 assert(!rule
->cr
.wc
.wildcards
);
1751 if (rule
->installed
) {
1752 struct odp_flow odp_flow
;
1754 odp_flow
.key
= rule
->cr
.flow
;
1755 odp_flow
.actions
= NULL
;
1756 odp_flow
.n_actions
= 0;
1757 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
1758 update_stats(p
, rule
, &odp_flow
.stats
);
1760 rule
->installed
= false;
1762 rule_post_uninstall(p
, rule
);
1767 is_controller_rule(struct rule
*rule
)
1769 /* If the only action is send to the controller then don't report
1770 * NetFlow expiration messages since it is just part of the control
1771 * logic for the network and not real traffic. */
1773 if (rule
&& rule
->super
) {
1774 struct rule
*super
= rule
->super
;
1776 return super
->n_actions
== 1 &&
1777 super
->actions
[0].type
== htons(OFPAT_OUTPUT
) &&
1778 super
->actions
[0].output
.port
== htons(OFPP_CONTROLLER
);
1785 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
1787 struct rule
*super
= rule
->super
;
1789 rule_account(ofproto
, rule
, 0);
1791 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
1792 struct ofexpired expired
;
1793 expired
.flow
= rule
->cr
.flow
;
1794 expired
.packet_count
= rule
->packet_count
;
1795 expired
.byte_count
= rule
->byte_count
;
1796 expired
.used
= rule
->used
;
1797 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
1800 super
->packet_count
+= rule
->packet_count
;
1801 super
->byte_count
+= rule
->byte_count
;
1803 /* Reset counters to prevent double counting if the rule ever gets
1805 rule
->packet_count
= 0;
1806 rule
->byte_count
= 0;
1807 rule
->accounted_bytes
= 0;
1809 netflow_flow_clear(&rule
->nf_flow
);
1814 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
1815 struct rconn_packet_counter
*counter
)
1817 update_openflow_length(msg
);
1818 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
1824 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1825 int error
, const void *data
, size_t len
)
1828 struct ofp_error_msg
*oem
;
1830 if (!(error
>> 16)) {
1831 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
1836 COVERAGE_INC(ofproto_error
);
1837 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
1838 oh
? oh
->xid
: 0, &buf
);
1839 oem
->type
= htons((unsigned int) error
>> 16);
1840 oem
->code
= htons(error
& 0xffff);
1841 memcpy(oem
->data
, data
, len
);
1842 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1846 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1849 size_t oh_length
= ntohs(oh
->length
);
1850 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
1854 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
1856 opp
->port_no
= htons(opp
->port_no
);
1857 opp
->config
= htonl(opp
->config
);
1858 opp
->state
= htonl(opp
->state
);
1859 opp
->curr
= htonl(opp
->curr
);
1860 opp
->advertised
= htonl(opp
->advertised
);
1861 opp
->supported
= htonl(opp
->supported
);
1862 opp
->peer
= htonl(opp
->peer
);
1866 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
1868 struct ofp_header
*rq
= oh
;
1869 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
1874 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1875 struct ofp_header
*oh
)
1877 struct ofp_switch_features
*osf
;
1879 unsigned int port_no
;
1880 struct ofport
*port
;
1882 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
1883 osf
->datapath_id
= htonll(p
->datapath_id
);
1884 osf
->n_buffers
= htonl(pktbuf_capacity());
1886 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
1887 OFPC_PORT_STATS
| OFPC_MULTI_PHY_TX
);
1888 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
1889 (1u << OFPAT_SET_VLAN_VID
) |
1890 (1u << OFPAT_SET_VLAN_PCP
) |
1891 (1u << OFPAT_STRIP_VLAN
) |
1892 (1u << OFPAT_SET_DL_SRC
) |
1893 (1u << OFPAT_SET_DL_DST
) |
1894 (1u << OFPAT_SET_NW_SRC
) |
1895 (1u << OFPAT_SET_NW_DST
) |
1896 (1u << OFPAT_SET_TP_SRC
) |
1897 (1u << OFPAT_SET_TP_DST
));
1899 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1900 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
1903 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1908 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1909 struct ofp_header
*oh
)
1912 struct ofp_switch_config
*osc
;
1916 /* Figure out flags. */
1917 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
1918 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
1919 if (ofconn
->send_flow_exp
) {
1920 flags
|= OFPC_SEND_FLOW_EXP
;
1924 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
1925 osc
->flags
= htons(flags
);
1926 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
1927 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1933 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
1934 struct ofp_switch_config
*osc
)
1939 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
1943 flags
= ntohs(osc
->flags
);
1945 ofconn
->send_flow_exp
= (flags
& OFPC_SEND_FLOW_EXP
) != 0;
1947 if (ofconn
== p
->controller
) {
1948 switch (flags
& OFPC_FRAG_MASK
) {
1949 case OFPC_FRAG_NORMAL
:
1950 dpif_set_drop_frags(p
->dpif
, false);
1952 case OFPC_FRAG_DROP
:
1953 dpif_set_drop_frags(p
->dpif
, true);
1956 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
1962 if ((ntohs(osc
->miss_send_len
) != 0) != (ofconn
->miss_send_len
!= 0)) {
1963 if (ntohs(osc
->miss_send_len
) != 0) {
1964 ofconn
->pktbuf
= pktbuf_create();
1966 pktbuf_destroy(ofconn
->pktbuf
);
1970 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
1976 add_output_group_action(struct odp_actions
*actions
, uint16_t group
,
1977 uint16_t *nf_output_iface
)
1979 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
1981 if (group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
) {
1982 *nf_output_iface
= NF_OUT_FLOOD
;
1987 add_controller_action(struct odp_actions
*actions
,
1988 const struct ofp_action_output
*oao
)
1990 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
1991 a
->controller
.arg
= oao
->max_len
? ntohs(oao
->max_len
) : UINT32_MAX
;
1994 struct action_xlate_ctx
{
1996 const flow_t
*flow
; /* Flow to which these actions correspond. */
1997 int recurse
; /* Recursion level, via xlate_table_action. */
1998 struct ofproto
*ofproto
;
1999 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2000 * null pointer if we are revalidating
2001 * without a packet to refer to. */
2004 struct odp_actions
*out
; /* Datapath actions. */
2005 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2006 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2007 * be reassessed for every packet. */
2008 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2011 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2012 struct action_xlate_ctx
*ctx
);
2015 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2017 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
2020 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2021 /* Forwarding disabled on port. */
2026 * We don't have an ofport record for this port, but it doesn't hurt to
2027 * allow forwarding to it anyhow. Maybe such a port will appear later
2028 * and we're pre-populating the flow table.
2032 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2033 ctx
->nf_output_iface
= port
;
2036 static struct rule
*
2037 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
2040 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2042 /* The rule we found might not be valid, since we could be in need of
2043 * revalidation. If it is not valid, don't return it. */
2046 && ofproto
->need_revalidate
2047 && !revalidate_rule(ofproto
, rule
)) {
2048 COVERAGE_INC(ofproto_invalidated
);
2056 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2058 if (!ctx
->recurse
) {
2063 flow
.in_port
= in_port
;
2065 rule
= lookup_valid_rule(ctx
->ofproto
, &flow
);
2072 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2079 xlate_output_action(struct action_xlate_ctx
*ctx
,
2080 const struct ofp_action_output
*oao
)
2083 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2085 ctx
->nf_output_iface
= NF_OUT_DROP
;
2087 switch (ntohs(oao
->port
)) {
2089 add_output_action(ctx
, ctx
->flow
->in_port
);
2092 xlate_table_action(ctx
, ctx
->flow
->in_port
);
2095 if (!ctx
->ofproto
->ofhooks
->normal_cb(ctx
->flow
, ctx
->packet
,
2096 ctx
->out
, ctx
->tags
,
2097 &ctx
->nf_output_iface
,
2098 ctx
->ofproto
->aux
)) {
2099 COVERAGE_INC(ofproto_uninstallable
);
2100 ctx
->may_set_up_flow
= false;
2104 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
,
2105 &ctx
->nf_output_iface
);
2108 add_output_group_action(ctx
->out
, DP_GROUP_ALL
, &ctx
->nf_output_iface
);
2110 case OFPP_CONTROLLER
:
2111 add_controller_action(ctx
->out
, oao
);
2114 add_output_action(ctx
, ODPP_LOCAL
);
2117 odp_port
= ofp_port_to_odp_port(ntohs(oao
->port
));
2118 if (odp_port
!= ctx
->flow
->in_port
) {
2119 add_output_action(ctx
, odp_port
);
2124 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2125 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2126 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2127 ctx
->nf_output_iface
= prev_nf_output_iface
;
2128 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2129 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2130 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2135 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2136 const struct nx_action_header
*nah
)
2138 const struct nx_action_resubmit
*nar
;
2139 int subtype
= ntohs(nah
->subtype
);
2141 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2143 case NXAST_RESUBMIT
:
2144 nar
= (const struct nx_action_resubmit
*) nah
;
2145 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2149 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2155 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2156 struct action_xlate_ctx
*ctx
)
2158 struct actions_iterator iter
;
2159 const union ofp_action
*ia
;
2160 const struct ofport
*port
;
2162 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
->in_port
);
2163 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2164 port
->opp
.config
& (eth_addr_equals(ctx
->flow
->dl_dst
, stp_eth_addr
)
2165 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2166 /* Drop this flow. */
2170 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2171 uint16_t type
= ntohs(ia
->type
);
2172 union odp_action
*oa
;
2176 xlate_output_action(ctx
, &ia
->output
);
2179 case OFPAT_SET_VLAN_VID
:
2180 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2181 oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2184 case OFPAT_SET_VLAN_PCP
:
2185 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2186 oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2189 case OFPAT_STRIP_VLAN
:
2190 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2193 case OFPAT_SET_DL_SRC
:
2194 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2195 memcpy(oa
->dl_addr
.dl_addr
,
2196 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2199 case OFPAT_SET_DL_DST
:
2200 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2201 memcpy(oa
->dl_addr
.dl_addr
,
2202 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2205 case OFPAT_SET_NW_SRC
:
2206 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2207 oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2210 case OFPAT_SET_NW_DST
:
2211 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2212 oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2215 case OFPAT_SET_TP_SRC
:
2216 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2217 oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2220 case OFPAT_SET_TP_DST
:
2221 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2222 oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2226 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2230 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2237 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2238 const flow_t
*flow
, struct ofproto
*ofproto
,
2239 const struct ofpbuf
*packet
,
2240 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2241 uint16_t *nf_output_iface
)
2243 tag_type no_tags
= 0;
2244 struct action_xlate_ctx ctx
;
2245 COVERAGE_INC(ofproto_ofp2odp
);
2246 odp_actions_init(out
);
2249 ctx
.ofproto
= ofproto
;
2250 ctx
.packet
= packet
;
2252 ctx
.tags
= tags
? tags
: &no_tags
;
2253 ctx
.may_set_up_flow
= true;
2254 ctx
.nf_output_iface
= NF_OUT_DROP
;
2255 do_xlate_actions(in
, n_in
, &ctx
);
2257 /* Check with in-band control to see if we're allowed to set up this
2259 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2260 ctx
.may_set_up_flow
= false;
2263 if (may_set_up_flow
) {
2264 *may_set_up_flow
= ctx
.may_set_up_flow
;
2266 if (nf_output_iface
) {
2267 *nf_output_iface
= ctx
.nf_output_iface
;
2269 if (odp_actions_overflow(out
)) {
2270 odp_actions_init(out
);
2271 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2277 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2278 struct ofp_header
*oh
)
2280 struct ofp_packet_out
*opo
;
2281 struct ofpbuf payload
, *buffer
;
2282 struct odp_actions actions
;
2288 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2292 opo
= (struct ofp_packet_out
*) oh
;
2294 COVERAGE_INC(ofproto_packet_out
);
2295 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2296 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2298 if (error
|| !buffer
) {
2306 flow_extract(&payload
, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2307 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2308 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2313 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2315 ofpbuf_delete(buffer
);
2321 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2322 uint32_t config
, uint32_t mask
)
2324 mask
&= config
^ port
->opp
.config
;
2325 if (mask
& OFPPC_PORT_DOWN
) {
2326 if (config
& OFPPC_PORT_DOWN
) {
2327 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2329 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2332 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2333 if (mask
& REVALIDATE_BITS
) {
2334 COVERAGE_INC(ofproto_costly_flags
);
2335 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2336 p
->need_revalidate
= true;
2338 #undef REVALIDATE_BITS
2339 if (mask
& OFPPC_NO_FLOOD
) {
2340 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2341 refresh_port_groups(p
);
2343 if (mask
& OFPPC_NO_PACKET_IN
) {
2344 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2349 handle_port_mod(struct ofproto
*p
, struct ofp_header
*oh
)
2351 const struct ofp_port_mod
*opm
;
2352 struct ofport
*port
;
2355 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2359 opm
= (struct ofp_port_mod
*) oh
;
2361 port
= port_array_get(&p
->ports
,
2362 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2364 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2365 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2366 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2368 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2369 if (opm
->advertise
) {
2370 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2376 static struct ofpbuf
*
2377 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2379 struct ofp_stats_reply
*osr
;
2382 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2383 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2385 osr
->flags
= htons(0);
2389 static struct ofpbuf
*
2390 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2392 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2396 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2398 struct ofpbuf
*msg
= *msgp
;
2399 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2400 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2401 struct ofp_stats_reply
*reply
= msg
->data
;
2402 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2403 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2404 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2406 return ofpbuf_put_uninit(*msgp
, nbytes
);
2410 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2411 struct ofp_stats_request
*request
)
2413 struct ofp_desc_stats
*ods
;
2416 msg
= start_stats_reply(request
, sizeof *ods
);
2417 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2418 strncpy(ods
->mfr_desc
, p
->manufacturer
, sizeof ods
->mfr_desc
);
2419 strncpy(ods
->hw_desc
, p
->hardware
, sizeof ods
->hw_desc
);
2420 strncpy(ods
->sw_desc
, p
->software
, sizeof ods
->sw_desc
);
2421 strncpy(ods
->serial_num
, p
->serial
, sizeof ods
->serial_num
);
2422 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2428 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2430 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2431 int *n_subrules
= n_subrules_
;
2439 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2440 struct ofp_stats_request
*request
)
2442 struct ofp_table_stats
*ots
;
2444 struct odp_stats dpstats
;
2445 int n_exact
, n_subrules
, n_wild
;
2447 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2449 /* Count rules of various kinds. */
2451 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2452 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2453 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2456 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2457 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2458 memset(ots
, 0, sizeof *ots
);
2459 ots
->table_id
= TABLEID_HASH
;
2460 strcpy(ots
->name
, "hash");
2461 ots
->wildcards
= htonl(0);
2462 ots
->max_entries
= htonl(dpstats
.max_capacity
);
2463 ots
->active_count
= htonl(n_exact
);
2464 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
2466 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
2468 /* Classifier table. */
2469 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2470 memset(ots
, 0, sizeof *ots
);
2471 ots
->table_id
= TABLEID_CLASSIFIER
;
2472 strcpy(ots
->name
, "classifier");
2473 ots
->wildcards
= htonl(OFPFW_ALL
);
2474 ots
->max_entries
= htonl(65536);
2475 ots
->active_count
= htonl(n_wild
);
2476 ots
->lookup_count
= htonll(0); /* XXX */
2477 ots
->matched_count
= htonll(0); /* XXX */
2479 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2484 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2485 struct ofp_stats_request
*request
)
2487 struct ofp_port_stats
*ops
;
2489 struct ofport
*port
;
2490 unsigned int port_no
;
2492 msg
= start_stats_reply(request
, sizeof *ops
* 16);
2493 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2494 struct netdev_stats stats
;
2496 /* Intentionally ignore return value, since errors will set 'stats' to
2497 * all-1s, which is correct for OpenFlow, and netdev_get_stats() will
2499 netdev_get_stats(port
->netdev
, &stats
);
2501 ops
= append_stats_reply(sizeof *ops
, ofconn
, &msg
);
2502 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
2503 memset(ops
->pad
, 0, sizeof ops
->pad
);
2504 ops
->rx_packets
= htonll(stats
.rx_packets
);
2505 ops
->tx_packets
= htonll(stats
.tx_packets
);
2506 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
2507 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
2508 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
2509 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
2510 ops
->rx_errors
= htonll(stats
.rx_errors
);
2511 ops
->tx_errors
= htonll(stats
.tx_errors
);
2512 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
2513 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
2514 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
2515 ops
->collisions
= htonll(stats
.collisions
);
2518 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2522 struct flow_stats_cbdata
{
2523 struct ofproto
*ofproto
;
2524 struct ofconn
*ofconn
;
2530 query_stats(struct ofproto
*p
, struct rule
*rule
,
2531 uint64_t *packet_countp
, uint64_t *byte_countp
)
2533 uint64_t packet_count
, byte_count
;
2534 struct rule
*subrule
;
2535 struct odp_flow
*odp_flows
;
2538 packet_count
= rule
->packet_count
;
2539 byte_count
= rule
->byte_count
;
2541 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
2542 odp_flows
= xcalloc(1, n_odp_flows
* sizeof *odp_flows
);
2543 if (rule
->cr
.wc
.wildcards
) {
2545 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
2546 odp_flows
[i
++].key
= subrule
->cr
.flow
;
2547 packet_count
+= subrule
->packet_count
;
2548 byte_count
+= subrule
->byte_count
;
2551 odp_flows
[0].key
= rule
->cr
.flow
;
2554 packet_count
= rule
->packet_count
;
2555 byte_count
= rule
->byte_count
;
2556 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
2558 for (i
= 0; i
< n_odp_flows
; i
++) {
2559 struct odp_flow
*odp_flow
= &odp_flows
[i
];
2560 packet_count
+= odp_flow
->stats
.n_packets
;
2561 byte_count
+= odp_flow
->stats
.n_bytes
;
2566 *packet_countp
= packet_count
;
2567 *byte_countp
= byte_count
;
2571 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2573 struct rule
*rule
= rule_from_cls_rule(rule_
);
2574 struct flow_stats_cbdata
*cbdata
= cbdata_
;
2575 struct ofp_flow_stats
*ofs
;
2576 uint64_t packet_count
, byte_count
;
2577 size_t act_len
, len
;
2579 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2583 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2584 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
2586 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2588 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
2589 ofs
->length
= htons(len
);
2590 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
2592 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofs
->match
);
2593 ofs
->duration
= htonl((time_msec() - rule
->created
) / 1000);
2594 ofs
->priority
= htons(rule
->cr
.priority
);
2595 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
2596 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
2597 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
2598 ofs
->packet_count
= htonll(packet_count
);
2599 ofs
->byte_count
= htonll(byte_count
);
2600 memcpy(ofs
->actions
, rule
->actions
, act_len
);
2604 table_id_to_include(uint8_t table_id
)
2606 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
2607 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
2608 : table_id
== 0xff ? CLS_INC_ALL
2613 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2614 const struct ofp_stats_request
*osr
,
2617 struct ofp_flow_stats_request
*fsr
;
2618 struct flow_stats_cbdata cbdata
;
2619 struct cls_rule target
;
2621 if (arg_size
!= sizeof *fsr
) {
2622 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2624 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
2626 COVERAGE_INC(ofproto_flows_req
);
2628 cbdata
.ofconn
= ofconn
;
2629 cbdata
.out_port
= fsr
->out_port
;
2630 cbdata
.msg
= start_stats_reply(osr
, 1024);
2631 cls_rule_from_match(&target
, &fsr
->match
, 0);
2632 classifier_for_each_match(&p
->cls
, &target
,
2633 table_id_to_include(fsr
->table_id
),
2634 flow_stats_cb
, &cbdata
);
2635 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
2639 struct flow_stats_ds_cbdata
{
2640 struct ofproto
*ofproto
;
2645 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
2647 struct rule
*rule
= rule_from_cls_rule(rule_
);
2648 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
2649 struct ds
*results
= cbdata
->results
;
2650 struct ofp_match match
;
2651 uint64_t packet_count
, byte_count
;
2652 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2654 /* Don't report on subrules. */
2655 if (rule
->super
!= NULL
) {
2659 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2660 flow_to_ovs_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &match
);
2662 ds_put_format(results
, "duration=%llds, ",
2663 (time_msec() - rule
->created
) / 1000);
2664 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2665 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2666 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2667 ofp_print_match(results
, &match
, true);
2668 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
2669 ds_put_cstr(results
, "\n");
2672 /* Adds a pretty-printed description of all flows to 'results', including
2673 * those marked hidden by secchan (e.g., by in-band control). */
2675 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2677 struct ofp_match match
;
2678 struct cls_rule target
;
2679 struct flow_stats_ds_cbdata cbdata
;
2681 memset(&match
, 0, sizeof match
);
2682 match
.wildcards
= htonl(OFPFW_ALL
);
2685 cbdata
.results
= results
;
2687 cls_rule_from_match(&target
, &match
, 0);
2688 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2689 flow_stats_ds_cb
, &cbdata
);
2692 struct aggregate_stats_cbdata
{
2693 struct ofproto
*ofproto
;
2695 uint64_t packet_count
;
2696 uint64_t byte_count
;
2701 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2703 struct rule
*rule
= rule_from_cls_rule(rule_
);
2704 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
2705 uint64_t packet_count
, byte_count
;
2707 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2711 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2713 cbdata
->packet_count
+= packet_count
;
2714 cbdata
->byte_count
+= byte_count
;
2719 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2720 const struct ofp_stats_request
*osr
,
2723 struct ofp_aggregate_stats_request
*asr
;
2724 struct ofp_aggregate_stats_reply
*reply
;
2725 struct aggregate_stats_cbdata cbdata
;
2726 struct cls_rule target
;
2729 if (arg_size
!= sizeof *asr
) {
2730 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
2732 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
2734 COVERAGE_INC(ofproto_agg_request
);
2736 cbdata
.out_port
= asr
->out_port
;
2737 cbdata
.packet_count
= 0;
2738 cbdata
.byte_count
= 0;
2740 cls_rule_from_match(&target
, &asr
->match
, 0);
2741 classifier_for_each_match(&p
->cls
, &target
,
2742 table_id_to_include(asr
->table_id
),
2743 aggregate_stats_cb
, &cbdata
);
2745 msg
= start_stats_reply(osr
, sizeof *reply
);
2746 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
2747 reply
->flow_count
= htonl(cbdata
.n_flows
);
2748 reply
->packet_count
= htonll(cbdata
.packet_count
);
2749 reply
->byte_count
= htonll(cbdata
.byte_count
);
2750 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2755 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2756 struct ofp_header
*oh
)
2758 struct ofp_stats_request
*osr
;
2762 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
2767 osr
= (struct ofp_stats_request
*) oh
;
2769 switch (ntohs(osr
->type
)) {
2771 return handle_desc_stats_request(p
, ofconn
, osr
);
2774 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
2776 case OFPST_AGGREGATE
:
2777 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
2780 return handle_table_stats_request(p
, ofconn
, osr
);
2783 return handle_port_stats_request(p
, ofconn
, osr
);
2786 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
2789 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
2793 static long long int
2794 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
2796 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
2800 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
2801 const struct odp_flow_stats
*stats
)
2803 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
2804 if (used
> rule
->used
) {
2806 if (rule
->super
&& used
> rule
->super
->used
) {
2807 rule
->super
->used
= used
;
2809 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
2814 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
2815 const struct odp_flow_stats
*stats
)
2817 if (stats
->n_packets
) {
2818 update_time(ofproto
, rule
, stats
);
2819 rule
->packet_count
+= stats
->n_packets
;
2820 rule
->byte_count
+= stats
->n_bytes
;
2821 netflow_flow_update_flags(&rule
->nf_flow
, stats
->ip_tos
,
2827 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
2828 struct ofp_flow_mod
*ofm
, size_t n_actions
)
2830 struct ofpbuf
*packet
;
2835 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
2836 n_actions
, ntohs(ofm
->idle_timeout
),
2837 ntohs(ofm
->hard_timeout
));
2838 cls_rule_from_match(&rule
->cr
, &ofm
->match
, ntohs(ofm
->priority
));
2842 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
2843 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
2847 rule_insert(p
, rule
, packet
, in_port
);
2848 ofpbuf_delete(packet
);
2853 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2854 size_t n_actions
, uint16_t command
, struct rule
*rule
)
2856 if (rule_is_hidden(rule
)) {
2860 if (command
== OFPFC_DELETE
) {
2861 rule_remove(p
, rule
);
2863 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
2865 if (n_actions
== rule
->n_actions
2866 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
2871 free(rule
->actions
);
2872 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
2873 rule
->n_actions
= n_actions
;
2875 if (rule
->cr
.wc
.wildcards
) {
2876 COVERAGE_INC(ofproto_mod_wc_flow
);
2877 p
->need_revalidate
= true;
2879 rule_update_actions(p
, rule
);
2887 modify_flows_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2888 size_t n_actions
, uint16_t command
)
2894 flow_from_match(&flow
, &wildcards
, &ofm
->match
);
2895 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
2896 &p
->cls
, &flow
, wildcards
,
2897 ntohs(ofm
->priority
)));
2900 if (command
== OFPFC_DELETE
2901 && ofm
->out_port
!= htons(OFPP_NONE
)
2902 && !rule_has_out_port(rule
, ofm
->out_port
)) {
2906 modify_flow(p
, ofm
, n_actions
, command
, rule
);
2911 struct modify_flows_cbdata
{
2912 struct ofproto
*ofproto
;
2913 const struct ofp_flow_mod
*ofm
;
2920 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
2922 struct rule
*rule
= rule_from_cls_rule(rule_
);
2923 struct modify_flows_cbdata
*cbdata
= cbdata_
;
2925 if (cbdata
->out_port
!= htons(OFPP_NONE
)
2926 && !rule_has_out_port(rule
, cbdata
->out_port
)) {
2930 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
,
2931 cbdata
->command
, rule
);
2935 modify_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2936 size_t n_actions
, uint16_t command
)
2938 struct modify_flows_cbdata cbdata
;
2939 struct cls_rule target
;
2943 cbdata
.out_port
= (command
== OFPFC_DELETE
? ofm
->out_port
2944 : htons(OFPP_NONE
));
2945 cbdata
.n_actions
= n_actions
;
2946 cbdata
.command
= command
;
2948 cls_rule_from_match(&target
, &ofm
->match
, 0);
2950 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2951 modify_flows_cb
, &cbdata
);
2956 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2957 struct ofp_flow_mod
*ofm
)
2962 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
2963 sizeof *ofm
->actions
, &n_actions
);
2968 normalize_match(&ofm
->match
);
2969 if (!ofm
->match
.wildcards
) {
2970 ofm
->priority
= htons(UINT16_MAX
);
2973 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
2974 n_actions
, p
->max_ports
);
2979 switch (ntohs(ofm
->command
)) {
2981 return add_flow(p
, ofconn
, ofm
, n_actions
);
2984 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_MODIFY
);
2986 case OFPFC_MODIFY_STRICT
:
2987 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_MODIFY
);
2990 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_DELETE
);
2992 case OFPFC_DELETE_STRICT
:
2993 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_DELETE
);
2996 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3001 send_capability_reply(struct ofproto
*p
, struct ofconn
*ofconn
, uint32_t xid
)
3003 struct ofmp_capability_reply
*ocr
;
3005 char capabilities
[] = "com.nicira.mgmt.manager=false\n";
3007 ocr
= make_openflow_xid(sizeof(*ocr
), OFPT_VENDOR
, xid
, &b
);
3008 ocr
->header
.header
.vendor
= htonl(NX_VENDOR_ID
);
3009 ocr
->header
.header
.subtype
= htonl(NXT_MGMT
);
3010 ocr
->header
.type
= htons(OFMPT_CAPABILITY_REPLY
);
3012 ocr
->format
= htonl(OFMPCOF_SIMPLE
);
3013 ocr
->mgmt_id
= htonll(p
->mgmt_id
);
3015 ofpbuf_put(b
, capabilities
, strlen(capabilities
));
3017 queue_tx(b
, ofconn
, ofconn
->reply_counter
);
3021 handle_ofmp(struct ofproto
*p
, struct ofconn
*ofconn
,
3022 struct ofmp_header
*ofmph
)
3024 size_t msg_len
= ntohs(ofmph
->header
.header
.length
);
3025 if (msg_len
< sizeof(*ofmph
)) {
3026 VLOG_WARN_RL(&rl
, "dropping short managment message: %zu\n", msg_len
);
3027 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
3030 if (ofmph
->type
== htons(OFMPT_CAPABILITY_REQUEST
)) {
3031 struct ofmp_capability_request
*ofmpcr
;
3033 if (msg_len
< sizeof(struct ofmp_capability_request
)) {
3034 VLOG_WARN_RL(&rl
, "dropping short capability request: %zu\n",
3036 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
3039 ofmpcr
= (struct ofmp_capability_request
*)ofmph
;
3040 if (ofmpcr
->format
!= htonl(OFMPCAF_SIMPLE
)) {
3041 /* xxx Find a better type than bad subtype */
3042 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3045 send_capability_reply(p
, ofconn
, ofmph
->header
.header
.xid
);
3048 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3053 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3055 struct ofp_vendor_header
*ovh
= msg
;
3056 struct nicira_header
*nh
;
3058 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3059 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
3061 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3062 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3064 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3065 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LENGTH
);
3069 switch (ntohl(nh
->subtype
)) {
3070 case NXT_STATUS_REQUEST
:
3071 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3074 case NXT_ACT_SET_CONFIG
:
3075 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
); /* XXX */
3077 case NXT_ACT_GET_CONFIG
:
3078 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
); /* XXX */
3080 case NXT_COMMAND_REQUEST
:
3082 return executer_handle_request(p
->executer
, ofconn
->rconn
, msg
);
3087 return handle_ofmp(p
, ofconn
, msg
);
3090 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3094 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
3095 struct ofpbuf
*ofp_msg
)
3097 struct ofp_header
*oh
= ofp_msg
->data
;
3100 COVERAGE_INC(ofproto_recv_openflow
);
3102 case OFPT_ECHO_REQUEST
:
3103 error
= handle_echo_request(ofconn
, oh
);
3106 case OFPT_ECHO_REPLY
:
3110 case OFPT_FEATURES_REQUEST
:
3111 error
= handle_features_request(p
, ofconn
, oh
);
3114 case OFPT_GET_CONFIG_REQUEST
:
3115 error
= handle_get_config_request(p
, ofconn
, oh
);
3118 case OFPT_SET_CONFIG
:
3119 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
3122 case OFPT_PACKET_OUT
:
3123 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
3127 error
= handle_port_mod(p
, oh
);
3131 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
3134 case OFPT_STATS_REQUEST
:
3135 error
= handle_stats_request(p
, ofconn
, oh
);
3139 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
3143 if (VLOG_IS_WARN_ENABLED()) {
3144 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
3145 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
3148 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
3153 send_error_oh(ofconn
, ofp_msg
->data
, error
);
3158 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3160 struct odp_msg
*msg
= packet
->data
;
3161 uint16_t in_port
= odp_port_to_ofp_port(msg
->port
);
3163 struct ofpbuf payload
;
3166 payload
.data
= msg
+ 1;
3167 payload
.size
= msg
->length
- sizeof *msg
;
3168 flow_extract(&payload
, msg
->port
, &flow
);
3170 /* Check with in-band control to see if this packet should be sent
3171 * to the local port regardless of the flow table. */
3172 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
3173 union odp_action action
;
3175 memset(&action
, 0, sizeof(action
));
3176 action
.output
.type
= ODPAT_OUTPUT
;
3177 action
.output
.port
= ODPP_LOCAL
;
3178 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
3181 rule
= lookup_valid_rule(p
, &flow
);
3183 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3184 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
3186 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
3187 COVERAGE_INC(ofproto_no_packet_in
);
3188 /* XXX install 'drop' flow entry */
3189 ofpbuf_delete(packet
);
3193 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
3196 COVERAGE_INC(ofproto_packet_in
);
3197 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3201 if (rule
->cr
.wc
.wildcards
) {
3202 rule
= rule_create_subrule(p
, rule
, &flow
);
3203 rule_make_actions(p
, rule
, packet
);
3205 if (!rule
->may_install
) {
3206 /* The rule is not installable, that is, we need to process every
3207 * packet, so process the current packet and set its actions into
3209 rule_make_actions(p
, rule
, packet
);
3211 /* XXX revalidate rule if it needs it */
3215 rule_execute(p
, rule
, &payload
, &flow
);
3216 rule_reinstall(p
, rule
);
3218 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
3219 && rconn_is_connected(p
->controller
->rconn
)) {
3221 * Extra-special case for fail-open mode.
3223 * We are in fail-open mode and the packet matched the fail-open rule,
3224 * but we are connected to a controller too. We should send the packet
3225 * up to the controller in the hope that it will try to set up a flow
3226 * and thereby allow us to exit fail-open.
3228 * See the top-level comment in fail-open.c for more information.
3230 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3232 ofpbuf_delete(packet
);
3237 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3239 struct odp_msg
*msg
= packet
->data
;
3241 switch (msg
->type
) {
3242 case _ODPL_ACTION_NR
:
3243 COVERAGE_INC(ofproto_ctlr_action
);
3244 pinsched_send(p
->action_sched
, odp_port_to_ofp_port(msg
->port
), packet
,
3245 send_packet_in_action
, p
);
3248 case _ODPL_SFLOW_NR
:
3250 ofproto_sflow_received(p
->sflow
, msg
);
3252 ofpbuf_delete(packet
);
3256 handle_odp_miss_msg(p
, packet
);
3260 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
3267 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
3269 struct rule
*sub
= rule_from_cls_rule(sub_
);
3270 struct revalidate_cbdata
*cbdata
= cbdata_
;
3272 if (cbdata
->revalidate_all
3273 || (cbdata
->revalidate_subrules
&& sub
->super
)
3274 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
3275 revalidate_rule(cbdata
->ofproto
, sub
);
3280 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
3282 const flow_t
*flow
= &rule
->cr
.flow
;
3284 COVERAGE_INC(ofproto_revalidate_rule
);
3287 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
3289 rule_remove(p
, rule
);
3291 } else if (super
!= rule
->super
) {
3292 COVERAGE_INC(ofproto_revalidate_moved
);
3293 list_remove(&rule
->list
);
3294 list_push_back(&super
->list
, &rule
->list
);
3295 rule
->super
= super
;
3296 rule
->hard_timeout
= super
->hard_timeout
;
3297 rule
->idle_timeout
= super
->idle_timeout
;
3298 rule
->created
= super
->created
;
3303 rule_update_actions(p
, rule
);
3307 static struct ofpbuf
*
3308 compose_flow_exp(const struct rule
*rule
, long long int now
, uint8_t reason
)
3310 struct ofp_flow_expired
*ofe
;
3313 ofe
= make_openflow(sizeof *ofe
, OFPT_FLOW_EXPIRED
, &buf
);
3314 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofe
->match
);
3315 ofe
->priority
= htons(rule
->cr
.priority
);
3316 ofe
->reason
= reason
;
3317 ofe
->duration
= htonl((now
- rule
->created
) / 1000);
3318 ofe
->packet_count
= htonll(rule
->packet_count
);
3319 ofe
->byte_count
= htonll(rule
->byte_count
);
3325 send_flow_exp(struct ofproto
*p
, struct rule
*rule
,
3326 long long int now
, uint8_t reason
)
3328 struct ofconn
*ofconn
;
3329 struct ofconn
*prev
;
3330 struct ofpbuf
*buf
= NULL
;
3332 /* We limit the maximum number of queued flow expirations it by accounting
3333 * them under the counter for replies. That works because preventing
3334 * OpenFlow requests from being processed also prevents new flows from
3335 * being added (and expiring). (It also prevents processing OpenFlow
3336 * requests that would not add new flows, so it is imperfect.) */
3339 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3340 if (ofconn
->send_flow_exp
&& rconn_is_connected(ofconn
->rconn
)) {
3342 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
3344 buf
= compose_flow_exp(rule
, now
, reason
);
3350 queue_tx(buf
, prev
, prev
->reply_counter
);
3355 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
3357 assert(rule
->installed
);
3358 assert(!rule
->cr
.wc
.wildcards
);
3361 rule_remove(ofproto
, rule
);
3363 rule_uninstall(ofproto
, rule
);
3368 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
3370 struct ofproto
*p
= p_
;
3371 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
3372 long long int hard_expire
, idle_expire
, expire
, now
;
3374 hard_expire
= (rule
->hard_timeout
3375 ? rule
->created
+ rule
->hard_timeout
* 1000
3377 idle_expire
= (rule
->idle_timeout
3378 && (rule
->super
|| list_is_empty(&rule
->list
))
3379 ? rule
->used
+ rule
->idle_timeout
* 1000
3381 expire
= MIN(hard_expire
, idle_expire
);
3385 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
3386 uninstall_idle_flow(p
, rule
);
3387 } else if (!rule
->cr
.wc
.wildcards
) {
3388 active_timeout(p
, rule
);
3394 COVERAGE_INC(ofproto_expired
);
3396 /* Update stats. This code will be a no-op if the rule expired
3397 * due to an idle timeout. */
3398 if (rule
->cr
.wc
.wildcards
) {
3399 struct rule
*subrule
, *next
;
3400 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
3401 rule_remove(p
, subrule
);
3404 rule_uninstall(p
, rule
);
3407 if (!rule_is_hidden(rule
)) {
3408 send_flow_exp(p
, rule
, now
,
3410 ? OFPER_HARD_TIMEOUT
: OFPER_IDLE_TIMEOUT
));
3412 rule_remove(p
, rule
);
3416 active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
3418 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
3419 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
3420 struct ofexpired expired
;
3421 struct odp_flow odp_flow
;
3423 /* Get updated flow stats. */
3424 memset(&odp_flow
, 0, sizeof odp_flow
);
3425 if (rule
->installed
) {
3426 odp_flow
.key
= rule
->cr
.flow
;
3427 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
3428 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
3430 if (odp_flow
.stats
.n_packets
) {
3431 update_time(ofproto
, rule
, &odp_flow
.stats
);
3432 netflow_flow_update_flags(&rule
->nf_flow
, odp_flow
.stats
.ip_tos
,
3433 odp_flow
.stats
.tcp_flags
);
3437 expired
.flow
= rule
->cr
.flow
;
3438 expired
.packet_count
= rule
->packet_count
+
3439 odp_flow
.stats
.n_packets
;
3440 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
3441 expired
.used
= rule
->used
;
3443 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
3445 /* Schedule us to send the accumulated records once we have
3446 * collected all of them. */
3447 poll_immediate_wake();
3452 update_used(struct ofproto
*p
)
3454 struct odp_flow
*flows
;
3459 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
3464 for (i
= 0; i
< n_flows
; i
++) {
3465 struct odp_flow
*f
= &flows
[i
];
3468 rule
= rule_from_cls_rule(
3469 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
3470 if (!rule
|| !rule
->installed
) {
3471 COVERAGE_INC(ofproto_unexpected_rule
);
3472 dpif_flow_del(p
->dpif
, f
);
3476 update_time(p
, rule
, &f
->stats
);
3477 rule_account(p
, rule
, f
->stats
.n_bytes
);
3483 do_send_packet_in(struct ofconn
*ofconn
, uint32_t buffer_id
,
3484 const struct ofpbuf
*packet
, int send_len
)
3486 struct odp_msg
*msg
= packet
->data
;
3487 struct ofpbuf payload
;
3491 /* Extract packet payload from 'msg'. */
3492 payload
.data
= msg
+ 1;
3493 payload
.size
= msg
->length
- sizeof *msg
;
3495 /* Construct ofp_packet_in message. */
3496 reason
= msg
->type
== _ODPL_ACTION_NR
? OFPR_ACTION
: OFPR_NO_MATCH
;
3497 opi
= make_packet_in(buffer_id
, odp_port_to_ofp_port(msg
->port
), reason
,
3498 &payload
, send_len
);
3501 rconn_send_with_limit(ofconn
->rconn
, opi
, ofconn
->packet_in_counter
, 100);
3505 send_packet_in_action(struct ofpbuf
*packet
, void *p_
)
3507 struct ofproto
*p
= p_
;
3508 struct ofconn
*ofconn
;
3509 struct odp_msg
*msg
;
3512 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3513 if (ofconn
== p
->controller
|| ofconn
->miss_send_len
) {
3514 do_send_packet_in(ofconn
, UINT32_MAX
, packet
, msg
->arg
);
3517 ofpbuf_delete(packet
);
3521 send_packet_in_miss(struct ofpbuf
*packet
, void *p_
)
3523 struct ofproto
*p
= p_
;
3524 bool in_fail_open
= p
->fail_open
&& fail_open_is_active(p
->fail_open
);
3525 struct ofconn
*ofconn
;
3526 struct ofpbuf payload
;
3527 struct odp_msg
*msg
;
3530 payload
.data
= msg
+ 1;
3531 payload
.size
= msg
->length
- sizeof *msg
;
3532 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3533 if (ofconn
->miss_send_len
) {
3534 struct pktbuf
*pb
= ofconn
->pktbuf
;
3535 uint32_t buffer_id
= (in_fail_open
3537 : pktbuf_save(pb
, &payload
, msg
->port
));
3538 int send_len
= (buffer_id
!= UINT32_MAX
? ofconn
->miss_send_len
3540 do_send_packet_in(ofconn
, buffer_id
, packet
, send_len
);
3543 ofpbuf_delete(packet
);
3547 pick_datapath_id(const struct ofproto
*ofproto
)
3549 const struct ofport
*port
;
3551 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
3553 uint8_t ea
[ETH_ADDR_LEN
];
3556 error
= netdev_get_etheraddr(port
->netdev
, ea
);
3558 return eth_addr_to_uint64(ea
);
3560 VLOG_WARN("could not get MAC address for %s (%s)",
3561 netdev_get_name(port
->netdev
), strerror(error
));
3563 return ofproto
->fallback_dpid
;
3567 pick_fallback_dpid(void)
3569 uint8_t ea
[ETH_ADDR_LEN
];
3570 eth_addr_random(ea
);
3571 ea
[0] = 0x00; /* Set Nicira OUI. */
3574 return eth_addr_to_uint64(ea
);
3578 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
3579 struct odp_actions
*actions
, tag_type
*tags
,
3580 uint16_t *nf_output_iface
, void *ofproto_
)
3582 struct ofproto
*ofproto
= ofproto_
;
3585 /* Drop frames for reserved multicast addresses. */
3586 if (eth_addr_is_reserved(flow
->dl_dst
)) {
3590 /* Learn source MAC (but don't try to learn from revalidation). */
3591 if (packet
!= NULL
) {
3592 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
3595 /* The log messages here could actually be useful in debugging,
3596 * so keep the rate limit relatively high. */
3597 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
3598 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
3599 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
3600 ofproto_revalidate(ofproto
, rev_tag
);
3604 /* Determine output port. */
3605 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
);
3607 add_output_group_action(actions
, DP_GROUP_FLOOD
, nf_output_iface
);
3608 } else if (out_port
!= flow
->in_port
) {
3609 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
3610 *nf_output_iface
= out_port
;
3618 static const struct ofhooks default_ofhooks
= {
3620 default_normal_ofhook_cb
,