2 * Copyright (c) 2009, 2010 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"
30 #include "fail-open.h"
32 #include "mac-learning.h"
36 #include "ofp-print.h"
37 #include "ofproto-sflow.h"
39 #include "openflow/nicira-ext.h"
40 #include "openflow/openflow.h"
41 #include "openvswitch/datapath-protocol.h"
45 #include "poll-loop.h"
46 #include "port-array.h"
51 #include "stream-ssl.h"
59 #define THIS_MODULE VLM_ofproto
62 #include "sflow_api.h"
66 TABLEID_CLASSIFIER
= 1
70 struct netdev
*netdev
;
71 struct ofp_phy_port opp
; /* In host byte order. */
74 static void ofport_free(struct ofport
*);
75 static void hton_ofp_phy_port(struct ofp_phy_port
*);
77 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
78 const flow_t
*flow
, struct ofproto
*ofproto
,
79 const struct ofpbuf
*packet
,
80 struct odp_actions
*out
, tag_type
*tags
,
81 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
86 uint64_t flow_cookie
; /* Controller-issued identifier.
87 (Kept in network-byte order.) */
88 uint16_t idle_timeout
; /* In seconds from time of last use. */
89 uint16_t hard_timeout
; /* In seconds from time of creation. */
90 bool send_flow_removed
; /* Send a flow removed message? */
91 long long int used
; /* Last-used time (0 if never used). */
92 long long int created
; /* Creation time. */
93 uint64_t packet_count
; /* Number of packets received. */
94 uint64_t byte_count
; /* Number of bytes received. */
95 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
96 tag_type tags
; /* Tags (set only by hooks). */
97 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
99 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
100 * exact-match rule (having cr.wc.wildcards of 0) generated from the
101 * wildcard rule 'super'. In this case, 'list' is an element of the
104 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
105 * a list of subrules. A super-rule with no wildcards (where
106 * cr.wc.wildcards is 0) will never have any subrules. */
112 * 'n_actions' is the number of elements in the 'actions' array. A single
113 * action may take up more more than one element's worth of space.
115 * A subrule has no actions (it uses the super-rule's actions). */
117 union ofp_action
*actions
;
121 * A super-rule with wildcard fields never has ODP actions (since the
122 * datapath only supports exact-match flows). */
123 bool installed
; /* Installed in datapath? */
124 bool may_install
; /* True ordinarily; false if actions must
125 * be reassessed for every packet. */
127 union odp_action
*odp_actions
;
131 rule_is_hidden(const struct rule
*rule
)
133 /* Subrules are merely an implementation detail, so hide them from the
135 if (rule
->super
!= NULL
) {
139 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
140 * (e.g. by in-band control) and are intentionally hidden from the
142 if (rule
->cr
.priority
> UINT16_MAX
) {
149 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
150 const union ofp_action
*, size_t n_actions
,
151 uint16_t idle_timeout
, uint16_t hard_timeout
,
152 uint64_t flow_cookie
, bool send_flow_removed
);
153 static void rule_free(struct rule
*);
154 static void rule_destroy(struct ofproto
*, struct rule
*);
155 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
156 static void rule_insert(struct ofproto
*, struct rule
*,
157 struct ofpbuf
*packet
, uint16_t in_port
);
158 static void rule_remove(struct ofproto
*, struct rule
*);
159 static bool rule_make_actions(struct ofproto
*, struct rule
*,
160 const struct ofpbuf
*packet
);
161 static void rule_install(struct ofproto
*, struct rule
*,
162 struct rule
*displaced_rule
);
163 static void rule_uninstall(struct ofproto
*, struct rule
*);
164 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
165 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
166 long long int now
, uint8_t reason
);
171 struct pktbuf
*pktbuf
;
174 struct rconn_packet_counter
*packet_in_counter
;
176 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
177 * the maximum number before we stop reading OpenFlow requests. */
178 #define OFCONN_REPLY_MAX 100
179 struct rconn_packet_counter
*reply_counter
;
182 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*);
183 static void ofconn_destroy(struct ofconn
*);
184 static void ofconn_run(struct ofconn
*, struct ofproto
*);
185 static void ofconn_wait(struct ofconn
*);
186 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
187 struct rconn_packet_counter
*counter
);
191 uint64_t datapath_id
; /* Datapath ID. */
192 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
193 char *mfr_desc
; /* Manufacturer. */
194 char *hw_desc
; /* Hardware. */
195 char *sw_desc
; /* Software version. */
196 char *serial_desc
; /* Serial number. */
197 char *dp_desc
; /* Datapath description. */
201 struct netdev_monitor
*netdev_monitor
;
202 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
204 struct shash port_by_name
;
208 struct switch_status
*switch_status
;
209 struct status_category
*ss_cat
;
210 struct in_band
*in_band
;
211 struct discovery
*discovery
;
212 struct fail_open
*fail_open
;
213 struct pinsched
*miss_sched
, *action_sched
;
214 struct netflow
*netflow
;
215 struct ofproto_sflow
*sflow
;
218 struct classifier cls
;
219 bool need_revalidate
;
220 long long int next_expiration
;
221 struct tag_set revalidate_set
;
222 bool tun_id_from_cookie
;
224 /* OpenFlow connections. */
225 struct list all_conns
;
226 struct ofconn
*controller
;
227 struct pvconn
**listeners
;
229 struct pvconn
**snoops
;
232 /* Hooks for ovs-vswitchd. */
233 const struct ofhooks
*ofhooks
;
236 /* Used by default ofhooks. */
237 struct mac_learning
*ml
;
240 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
242 static const struct ofhooks default_ofhooks
;
244 static uint64_t pick_datapath_id(const struct ofproto
*);
245 static uint64_t pick_fallback_dpid(void);
246 static void send_packet_in_miss(struct ofpbuf
*, void *ofproto
);
247 static void send_packet_in_action(struct ofpbuf
*, void *ofproto
);
248 static void update_used(struct ofproto
*);
249 static void update_stats(struct ofproto
*, struct rule
*,
250 const struct odp_flow_stats
*);
251 static void expire_rule(struct cls_rule
*, void *ofproto
);
252 static void active_timeout(struct ofproto
*ofproto
, struct rule
*rule
);
253 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
254 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
256 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
258 static void handle_openflow(struct ofconn
*, struct ofproto
*,
261 static void refresh_port_groups(struct ofproto
*);
263 static void update_port(struct ofproto
*, const char *devname
);
264 static int init_ports(struct ofproto
*);
265 static void reinit_ports(struct ofproto
*);
268 ofproto_create(const char *datapath
, const char *datapath_type
,
269 const struct ofhooks
*ofhooks
, void *aux
,
270 struct ofproto
**ofprotop
)
272 struct odp_stats stats
;
279 /* Connect to datapath and start listening for messages. */
280 error
= dpif_open(datapath
, datapath_type
, &dpif
);
282 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
285 error
= dpif_get_dp_stats(dpif
, &stats
);
287 VLOG_ERR("failed to obtain stats for datapath %s: %s",
288 datapath
, strerror(error
));
292 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
294 VLOG_ERR("failed to listen on datapath %s: %s",
295 datapath
, strerror(error
));
299 dpif_flow_flush(dpif
);
300 dpif_recv_purge(dpif
);
302 /* Initialize settings. */
303 p
= xzalloc(sizeof *p
);
304 p
->fallback_dpid
= pick_fallback_dpid();
305 p
->datapath_id
= p
->fallback_dpid
;
306 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
307 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
308 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
309 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
310 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
312 /* Initialize datapath. */
314 p
->netdev_monitor
= netdev_monitor_create();
315 port_array_init(&p
->ports
);
316 shash_init(&p
->port_by_name
);
317 p
->max_ports
= stats
.max_ports
;
319 /* Initialize submodules. */
320 p
->switch_status
= switch_status_create(p
);
324 p
->miss_sched
= p
->action_sched
= NULL
;
328 /* Initialize flow table. */
329 classifier_init(&p
->cls
);
330 p
->need_revalidate
= false;
331 p
->next_expiration
= time_msec() + 1000;
332 tag_set_init(&p
->revalidate_set
);
334 /* Initialize OpenFlow connections. */
335 list_init(&p
->all_conns
);
336 p
->controller
= ofconn_create(p
, rconn_create(5, 8));
337 p
->controller
->pktbuf
= pktbuf_create();
338 p
->controller
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
344 /* Initialize hooks. */
346 p
->ofhooks
= ofhooks
;
350 p
->ofhooks
= &default_ofhooks
;
352 p
->ml
= mac_learning_create();
355 /* Register switch status category. */
356 p
->ss_cat
= switch_status_register(p
->switch_status
, "remote",
357 rconn_status_cb
, p
->controller
->rconn
);
359 /* Pick final datapath ID. */
360 p
->datapath_id
= pick_datapath_id(p
);
361 VLOG_INFO("using datapath ID %016"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 %016"PRIx64
, p
->datapath_id
);
374 rconn_reconnect(p
->controller
->rconn
);
379 ofproto_set_probe_interval(struct ofproto
*p
, int probe_interval
)
381 probe_interval
= probe_interval
? MAX(probe_interval
, 5) : 0;
382 rconn_set_probe_interval(p
->controller
->rconn
, probe_interval
);
384 int trigger_duration
= probe_interval
? probe_interval
* 3 : 15;
385 fail_open_set_trigger_duration(p
->fail_open
, trigger_duration
);
390 ofproto_set_max_backoff(struct ofproto
*p
, int max_backoff
)
392 rconn_set_max_backoff(p
->controller
->rconn
, max_backoff
);
396 ofproto_set_desc(struct ofproto
*p
,
397 const char *mfr_desc
, const char *hw_desc
,
398 const char *sw_desc
, const char *serial_desc
,
401 struct ofp_desc_stats
*ods
;
404 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
405 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
406 sizeof ods
->mfr_desc
);
409 p
->mfr_desc
= xstrdup(mfr_desc
);
412 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
413 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
414 sizeof ods
->hw_desc
);
417 p
->hw_desc
= xstrdup(hw_desc
);
420 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
421 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
422 sizeof ods
->sw_desc
);
425 p
->sw_desc
= xstrdup(sw_desc
);
428 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
429 VLOG_WARN("truncating serial_desc, must be less than %zu "
431 sizeof ods
->serial_num
);
433 free(p
->serial_desc
);
434 p
->serial_desc
= xstrdup(serial_desc
);
437 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
438 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
439 sizeof ods
->dp_desc
);
442 p
->dp_desc
= xstrdup(dp_desc
);
447 ofproto_set_in_band(struct ofproto
*p
, bool in_band
)
449 if (in_band
!= (p
->in_band
!= NULL
)) {
451 return in_band_create(p
, p
->dpif
, p
->switch_status
,
452 p
->controller
->rconn
, &p
->in_band
);
454 ofproto_set_discovery(p
, false, NULL
, true);
455 in_band_destroy(p
->in_band
);
458 rconn_reconnect(p
->controller
->rconn
);
464 ofproto_set_discovery(struct ofproto
*p
, bool discovery
,
465 const char *re
, bool update_resolv_conf
)
467 if (discovery
!= (p
->discovery
!= NULL
)) {
469 int error
= ofproto_set_in_band(p
, true);
473 error
= discovery_create(re
, update_resolv_conf
,
474 p
->dpif
, p
->switch_status
,
480 discovery_destroy(p
->discovery
);
483 rconn_disconnect(p
->controller
->rconn
);
484 } else if (discovery
) {
485 discovery_set_update_resolv_conf(p
->discovery
, update_resolv_conf
);
486 return discovery_set_accept_controller_re(p
->discovery
, re
);
492 ofproto_set_controller(struct ofproto
*ofproto
, const char *controller
)
494 if (ofproto
->discovery
) {
496 } else if (controller
) {
497 if (strcmp(rconn_get_name(ofproto
->controller
->rconn
), controller
)) {
498 return rconn_connect(ofproto
->controller
->rconn
, controller
);
503 rconn_disconnect(ofproto
->controller
->rconn
);
509 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
510 const struct svec
*svec
)
512 struct pvconn
**pvconns
= *pvconnsp
;
513 size_t n_pvconns
= *n_pvconnsp
;
517 for (i
= 0; i
< n_pvconns
; i
++) {
518 pvconn_close(pvconns
[i
]);
522 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
524 for (i
= 0; i
< svec
->n
; i
++) {
525 const char *name
= svec
->names
[i
];
526 struct pvconn
*pvconn
;
529 error
= pvconn_open(name
, &pvconn
);
531 pvconns
[n_pvconns
++] = pvconn
;
533 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
541 *n_pvconnsp
= n_pvconns
;
547 ofproto_set_listeners(struct ofproto
*ofproto
, const struct svec
*listeners
)
549 return set_pvconns(&ofproto
->listeners
, &ofproto
->n_listeners
, listeners
);
553 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
555 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
559 ofproto_set_netflow(struct ofproto
*ofproto
,
560 const struct netflow_options
*nf_options
)
562 if (nf_options
&& nf_options
->collectors
.n
) {
563 if (!ofproto
->netflow
) {
564 ofproto
->netflow
= netflow_create();
566 return netflow_set_options(ofproto
->netflow
, nf_options
);
568 netflow_destroy(ofproto
->netflow
);
569 ofproto
->netflow
= NULL
;
575 ofproto_set_sflow(struct ofproto
*ofproto
,
576 const struct ofproto_sflow_options
*oso
)
578 struct ofproto_sflow
*os
= ofproto
->sflow
;
581 struct ofport
*ofport
;
582 unsigned int odp_port
;
584 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
585 refresh_port_groups(ofproto
);
586 PORT_ARRAY_FOR_EACH (ofport
, &ofproto
->ports
, odp_port
) {
587 ofproto_sflow_add_port(os
, odp_port
,
588 netdev_get_name(ofport
->netdev
));
591 ofproto_sflow_set_options(os
, oso
);
593 ofproto_sflow_destroy(os
);
594 ofproto
->sflow
= NULL
;
599 ofproto_set_failure(struct ofproto
*ofproto
, bool fail_open
)
602 struct rconn
*rconn
= ofproto
->controller
->rconn
;
603 int trigger_duration
= rconn_get_probe_interval(rconn
) * 3;
604 if (!ofproto
->fail_open
) {
605 ofproto
->fail_open
= fail_open_create(ofproto
, trigger_duration
,
606 ofproto
->switch_status
,
609 fail_open_set_trigger_duration(ofproto
->fail_open
,
613 fail_open_destroy(ofproto
->fail_open
);
614 ofproto
->fail_open
= NULL
;
619 ofproto_set_rate_limit(struct ofproto
*ofproto
,
620 int rate_limit
, int burst_limit
)
622 if (rate_limit
> 0) {
623 if (!ofproto
->miss_sched
) {
624 ofproto
->miss_sched
= pinsched_create(rate_limit
, burst_limit
,
625 ofproto
->switch_status
);
626 ofproto
->action_sched
= pinsched_create(rate_limit
, burst_limit
,
629 pinsched_set_limits(ofproto
->miss_sched
, rate_limit
, burst_limit
);
630 pinsched_set_limits(ofproto
->action_sched
,
631 rate_limit
, burst_limit
);
634 pinsched_destroy(ofproto
->miss_sched
);
635 ofproto
->miss_sched
= NULL
;
636 pinsched_destroy(ofproto
->action_sched
);
637 ofproto
->action_sched
= NULL
;
642 ofproto_set_stp(struct ofproto
*ofproto OVS_UNUSED
, bool enable_stp
)
646 VLOG_WARN("STP is not yet implemented");
654 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
656 return ofproto
->datapath_id
;
660 ofproto_get_probe_interval(const struct ofproto
*ofproto
)
662 return rconn_get_probe_interval(ofproto
->controller
->rconn
);
666 ofproto_get_max_backoff(const struct ofproto
*ofproto
)
668 return rconn_get_max_backoff(ofproto
->controller
->rconn
);
672 ofproto_get_in_band(const struct ofproto
*ofproto
)
674 return ofproto
->in_band
!= NULL
;
678 ofproto_get_discovery(const struct ofproto
*ofproto
)
680 return ofproto
->discovery
!= NULL
;
684 ofproto_get_controller(const struct ofproto
*ofproto
)
686 return rconn_get_name(ofproto
->controller
->rconn
);
690 ofproto_get_listeners(const struct ofproto
*ofproto
, struct svec
*listeners
)
694 for (i
= 0; i
< ofproto
->n_listeners
; i
++) {
695 svec_add(listeners
, pvconn_get_name(ofproto
->listeners
[i
]));
700 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
704 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
705 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
710 ofproto_destroy(struct ofproto
*p
)
712 struct ofconn
*ofconn
, *next_ofconn
;
713 struct ofport
*ofport
;
714 unsigned int port_no
;
721 /* Destroy fail-open and in-band early, since they touch the classifier. */
722 ofproto_set_failure(p
, false);
723 ofproto_set_in_band(p
, false);
725 ofproto_flush_flows(p
);
726 classifier_destroy(&p
->cls
);
728 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
730 ofconn_destroy(ofconn
);
734 netdev_monitor_destroy(p
->netdev_monitor
);
735 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
738 shash_destroy(&p
->port_by_name
);
740 switch_status_destroy(p
->switch_status
);
741 discovery_destroy(p
->discovery
);
742 pinsched_destroy(p
->miss_sched
);
743 pinsched_destroy(p
->action_sched
);
744 netflow_destroy(p
->netflow
);
745 ofproto_sflow_destroy(p
->sflow
);
747 switch_status_unregister(p
->ss_cat
);
749 for (i
= 0; i
< p
->n_listeners
; i
++) {
750 pvconn_close(p
->listeners
[i
]);
754 for (i
= 0; i
< p
->n_snoops
; i
++) {
755 pvconn_close(p
->snoops
[i
]);
759 mac_learning_destroy(p
->ml
);
764 free(p
->serial_desc
);
767 port_array_destroy(&p
->ports
);
773 ofproto_run(struct ofproto
*p
)
775 int error
= ofproto_run1(p
);
777 error
= ofproto_run2(p
, false);
783 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
785 if (error
== ENOBUFS
) {
786 reinit_ports(ofproto
);
788 update_port(ofproto
, devname
);
794 ofproto_run1(struct ofproto
*p
)
796 struct ofconn
*ofconn
, *next_ofconn
;
801 if (shash_is_empty(&p
->port_by_name
)) {
805 for (i
= 0; i
< 50; i
++) {
809 error
= dpif_recv(p
->dpif
, &buf
);
811 if (error
== ENODEV
) {
812 /* Someone destroyed the datapath behind our back. The caller
813 * better destroy us and give up, because we're just going to
814 * spin from here on out. */
815 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
816 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
823 handle_odp_msg(p
, buf
);
826 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
827 process_port_change(p
, error
, devname
);
829 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
830 &devname
)) != EAGAIN
) {
831 process_port_change(p
, error
, devname
);
835 in_band_run(p
->in_band
);
838 char *controller_name
;
839 if (rconn_is_connectivity_questionable(p
->controller
->rconn
)) {
840 discovery_question_connectivity(p
->discovery
);
842 if (discovery_run(p
->discovery
, &controller_name
)) {
843 if (controller_name
) {
844 rconn_connect(p
->controller
->rconn
, controller_name
);
846 rconn_disconnect(p
->controller
->rconn
);
850 pinsched_run(p
->miss_sched
, send_packet_in_miss
, p
);
851 pinsched_run(p
->action_sched
, send_packet_in_action
, p
);
853 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
855 ofconn_run(ofconn
, p
);
858 /* Fail-open maintenance. Do this after processing the ofconns since
859 * fail-open checks the status of the controller rconn. */
861 fail_open_run(p
->fail_open
);
864 for (i
= 0; i
< p
->n_listeners
; i
++) {
868 retval
= pvconn_accept(p
->listeners
[i
], OFP_VERSION
, &vconn
);
870 ofconn_create(p
, rconn_new_from_vconn("passive", vconn
));
871 } else if (retval
!= EAGAIN
) {
872 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
876 for (i
= 0; i
< p
->n_snoops
; i
++) {
880 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
882 rconn_add_monitor(p
->controller
->rconn
, vconn
);
883 } else if (retval
!= EAGAIN
) {
884 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
888 if (time_msec() >= p
->next_expiration
) {
889 COVERAGE_INC(ofproto_expiration
);
890 p
->next_expiration
= time_msec() + 1000;
893 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
895 /* Let the hook know that we're at a stable point: all outstanding data
896 * in existing flows has been accounted to the account_cb. Thus, the
897 * hook can now reasonably do operations that depend on having accurate
898 * flow volume accounting (currently, that's just bond rebalancing). */
899 if (p
->ofhooks
->account_checkpoint_cb
) {
900 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
905 netflow_run(p
->netflow
);
908 ofproto_sflow_run(p
->sflow
);
914 struct revalidate_cbdata
{
915 struct ofproto
*ofproto
;
916 bool revalidate_all
; /* Revalidate all exact-match rules? */
917 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
918 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
922 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
924 if (p
->need_revalidate
|| revalidate_all
925 || !tag_set_is_empty(&p
->revalidate_set
)) {
926 struct revalidate_cbdata cbdata
;
928 cbdata
.revalidate_all
= revalidate_all
;
929 cbdata
.revalidate_subrules
= p
->need_revalidate
;
930 cbdata
.revalidate_set
= p
->revalidate_set
;
931 tag_set_init(&p
->revalidate_set
);
932 COVERAGE_INC(ofproto_revalidate
);
933 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
934 p
->need_revalidate
= false;
941 ofproto_wait(struct ofproto
*p
)
943 struct ofconn
*ofconn
;
946 dpif_recv_wait(p
->dpif
);
947 dpif_port_poll_wait(p
->dpif
);
948 netdev_monitor_poll_wait(p
->netdev_monitor
);
949 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
953 in_band_wait(p
->in_band
);
956 discovery_wait(p
->discovery
);
959 fail_open_wait(p
->fail_open
);
961 pinsched_wait(p
->miss_sched
);
962 pinsched_wait(p
->action_sched
);
964 ofproto_sflow_wait(p
->sflow
);
966 if (!tag_set_is_empty(&p
->revalidate_set
)) {
967 poll_immediate_wake();
969 if (p
->need_revalidate
) {
970 /* Shouldn't happen, but if it does just go around again. */
971 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
972 poll_immediate_wake();
973 } else if (p
->next_expiration
!= LLONG_MAX
) {
974 poll_timer_wait(p
->next_expiration
- time_msec());
976 for (i
= 0; i
< p
->n_listeners
; i
++) {
977 pvconn_wait(p
->listeners
[i
]);
979 for (i
= 0; i
< p
->n_snoops
; i
++) {
980 pvconn_wait(p
->snoops
[i
]);
985 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
987 tag_set_add(&ofproto
->revalidate_set
, tag
);
991 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
993 return &ofproto
->revalidate_set
;
997 ofproto_is_alive(const struct ofproto
*p
)
999 return p
->discovery
|| rconn_is_alive(p
->controller
->rconn
);
1003 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
1004 const union ofp_action
*actions
, size_t n_actions
,
1005 const struct ofpbuf
*packet
)
1007 struct odp_actions odp_actions
;
1010 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1016 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1018 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
1019 odp_actions
.n_actions
, packet
);
1024 ofproto_add_flow(struct ofproto
*p
,
1025 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
1026 const union ofp_action
*actions
, size_t n_actions
,
1030 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1031 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1033 cls_rule_from_flow(flow
, wildcards
, priority
, &rule
->cr
);
1034 rule_insert(p
, rule
, NULL
, 0);
1038 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1039 uint32_t wildcards
, unsigned int priority
)
1043 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1047 rule_remove(ofproto
, rule
);
1052 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1054 struct rule
*rule
= rule_from_cls_rule(rule_
);
1055 struct ofproto
*ofproto
= ofproto_
;
1057 /* Mark the flow as not installed, even though it might really be
1058 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1059 * There is no point in uninstalling it individually since we are about to
1060 * blow away all the flows with dpif_flow_flush(). */
1061 rule
->installed
= false;
1063 rule_remove(ofproto
, rule
);
1067 ofproto_flush_flows(struct ofproto
*ofproto
)
1069 COVERAGE_INC(ofproto_flush
);
1070 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1071 dpif_flow_flush(ofproto
->dpif
);
1072 if (ofproto
->in_band
) {
1073 in_band_flushed(ofproto
->in_band
);
1075 if (ofproto
->fail_open
) {
1076 fail_open_flushed(ofproto
->fail_open
);
1081 reinit_ports(struct ofproto
*p
)
1083 struct svec devnames
;
1084 struct ofport
*ofport
;
1085 unsigned int port_no
;
1086 struct odp_port
*odp_ports
;
1090 svec_init(&devnames
);
1091 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1092 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1094 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1095 for (i
= 0; i
< n_odp_ports
; i
++) {
1096 svec_add (&devnames
, odp_ports
[i
].devname
);
1100 svec_sort_unique(&devnames
);
1101 for (i
= 0; i
< devnames
.n
; i
++) {
1102 update_port(p
, devnames
.names
[i
]);
1104 svec_destroy(&devnames
);
1108 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1112 struct ofport
*port
;
1113 unsigned int port_no
;
1115 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1117 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1119 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1120 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1121 ports
[n_ports
++] = port_no
;
1124 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1131 refresh_port_groups(struct ofproto
*p
)
1133 size_t n_flood
= refresh_port_group(p
, DP_GROUP_FLOOD
);
1134 size_t n_all
= refresh_port_group(p
, DP_GROUP_ALL
);
1136 ofproto_sflow_set_group_sizes(p
->sflow
, n_flood
, n_all
);
1140 static struct ofport
*
1141 make_ofport(const struct odp_port
*odp_port
)
1143 struct netdev_options netdev_options
;
1144 enum netdev_flags flags
;
1145 struct ofport
*ofport
;
1146 struct netdev
*netdev
;
1150 memset(&netdev_options
, 0, sizeof netdev_options
);
1151 netdev_options
.name
= odp_port
->devname
;
1152 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1153 netdev_options
.may_open
= true;
1155 error
= netdev_open(&netdev_options
, &netdev
);
1157 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1158 "cannot be opened (%s)",
1159 odp_port
->devname
, odp_port
->port
,
1160 odp_port
->devname
, strerror(error
));
1164 ofport
= xmalloc(sizeof *ofport
);
1165 ofport
->netdev
= netdev
;
1166 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1167 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1168 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1169 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1170 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1172 netdev_get_flags(netdev
, &flags
);
1173 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1175 netdev_get_carrier(netdev
, &carrier
);
1176 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1178 netdev_get_features(netdev
,
1179 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1180 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1185 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1187 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1188 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1191 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1192 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1201 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1203 const struct ofp_phy_port
*a
= &a_
->opp
;
1204 const struct ofp_phy_port
*b
= &b_
->opp
;
1206 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1207 return (a
->port_no
== b
->port_no
1208 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1209 && !strcmp((char *) a
->name
, (char *) b
->name
)
1210 && a
->state
== b
->state
1211 && a
->config
== b
->config
1212 && a
->curr
== b
->curr
1213 && a
->advertised
== b
->advertised
1214 && a
->supported
== b
->supported
1215 && a
->peer
== b
->peer
);
1219 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1222 /* XXX Should limit the number of queued port status change messages. */
1223 struct ofconn
*ofconn
;
1224 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1225 struct ofp_port_status
*ops
;
1228 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1229 ops
->reason
= reason
;
1230 ops
->desc
= ofport
->opp
;
1231 hton_ofp_phy_port(&ops
->desc
);
1232 queue_tx(b
, ofconn
, NULL
);
1234 if (p
->ofhooks
->port_changed_cb
) {
1235 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1240 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1242 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1243 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1245 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1246 port_array_set(&p
->ports
, odp_port
, ofport
);
1247 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1249 ofproto_sflow_add_port(p
->sflow
, odp_port
, netdev_name
);
1254 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1256 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1258 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1259 port_array_set(&p
->ports
, odp_port
, NULL
);
1260 shash_delete(&p
->port_by_name
,
1261 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1263 ofproto_sflow_del_port(p
->sflow
, odp_port
);
1268 ofport_free(struct ofport
*ofport
)
1271 netdev_close(ofport
->netdev
);
1277 update_port(struct ofproto
*p
, const char *devname
)
1279 struct odp_port odp_port
;
1280 struct ofport
*old_ofport
;
1281 struct ofport
*new_ofport
;
1284 COVERAGE_INC(ofproto_update_port
);
1286 /* Query the datapath for port information. */
1287 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1289 /* Find the old ofport. */
1290 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1293 /* There's no port named 'devname' but there might be a port with
1294 * the same port number. This could happen if a port is deleted
1295 * and then a new one added in its place very quickly, or if a port
1296 * is renamed. In the former case we want to send an OFPPR_DELETE
1297 * and an OFPPR_ADD, and in the latter case we want to send a
1298 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1299 * the old port's ifindex against the new port, or perhaps less
1300 * reliably but more portably by comparing the old port's MAC
1301 * against the new port's MAC. However, this code isn't that smart
1302 * and always sends an OFPPR_MODIFY (XXX). */
1303 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1305 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1306 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1307 "%s", strerror(error
));
1311 /* Create a new ofport. */
1312 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1314 /* Eliminate a few pathological cases. */
1315 if (!old_ofport
&& !new_ofport
) {
1317 } else if (old_ofport
&& new_ofport
) {
1318 /* Most of the 'config' bits are OpenFlow soft state, but
1319 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1320 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1321 * leaves the other bits 0.) */
1322 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1324 if (ofport_equal(old_ofport
, new_ofport
)) {
1325 /* False alarm--no change. */
1326 ofport_free(new_ofport
);
1331 /* Now deal with the normal cases. */
1333 ofport_remove(p
, old_ofport
);
1336 ofport_install(p
, new_ofport
);
1338 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1339 (!old_ofport
? OFPPR_ADD
1340 : !new_ofport
? OFPPR_DELETE
1342 ofport_free(old_ofport
);
1344 /* Update port groups. */
1345 refresh_port_groups(p
);
1349 init_ports(struct ofproto
*p
)
1351 struct odp_port
*ports
;
1356 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1361 for (i
= 0; i
< n_ports
; i
++) {
1362 const struct odp_port
*odp_port
= &ports
[i
];
1363 if (!ofport_conflicts(p
, odp_port
)) {
1364 struct ofport
*ofport
= make_ofport(odp_port
);
1366 ofport_install(p
, ofport
);
1371 refresh_port_groups(p
);
1375 static struct ofconn
*
1376 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
)
1378 struct ofconn
*ofconn
= xmalloc(sizeof *ofconn
);
1379 list_push_back(&p
->all_conns
, &ofconn
->node
);
1380 ofconn
->rconn
= rconn
;
1381 ofconn
->pktbuf
= NULL
;
1382 ofconn
->miss_send_len
= 0;
1383 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1384 ofconn
->reply_counter
= rconn_packet_counter_create ();
1389 ofconn_destroy(struct ofconn
*ofconn
)
1391 list_remove(&ofconn
->node
);
1392 rconn_destroy(ofconn
->rconn
);
1393 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1394 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1395 pktbuf_destroy(ofconn
->pktbuf
);
1400 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1404 rconn_run(ofconn
->rconn
);
1406 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1407 /* Limit the number of iterations to prevent other tasks from
1409 for (iteration
= 0; iteration
< 50; iteration
++) {
1410 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1415 fail_open_maybe_recover(p
->fail_open
);
1417 handle_openflow(ofconn
, p
, of_msg
);
1418 ofpbuf_delete(of_msg
);
1422 if (ofconn
!= p
->controller
&& !rconn_is_alive(ofconn
->rconn
)) {
1423 ofconn_destroy(ofconn
);
1428 ofconn_wait(struct ofconn
*ofconn
)
1430 rconn_run_wait(ofconn
->rconn
);
1431 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1432 rconn_recv_wait(ofconn
->rconn
);
1434 COVERAGE_INC(ofproto_ofconn_stuck
);
1438 /* Caller is responsible for initializing the 'cr' member of the returned
1440 static struct rule
*
1441 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1442 const union ofp_action
*actions
, size_t n_actions
,
1443 uint16_t idle_timeout
, uint16_t hard_timeout
,
1444 uint64_t flow_cookie
, bool send_flow_removed
)
1446 struct rule
*rule
= xzalloc(sizeof *rule
);
1447 rule
->idle_timeout
= idle_timeout
;
1448 rule
->hard_timeout
= hard_timeout
;
1449 rule
->flow_cookie
= flow_cookie
;
1450 rule
->used
= rule
->created
= time_msec();
1451 rule
->send_flow_removed
= send_flow_removed
;
1452 rule
->super
= super
;
1454 list_push_back(&super
->list
, &rule
->list
);
1456 list_init(&rule
->list
);
1458 rule
->n_actions
= n_actions
;
1459 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1460 netflow_flow_clear(&rule
->nf_flow
);
1461 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1466 static struct rule
*
1467 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1469 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1473 rule_free(struct rule
*rule
)
1475 free(rule
->actions
);
1476 free(rule
->odp_actions
);
1480 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1481 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1482 * through all of its subrules and revalidates them, destroying any that no
1483 * longer has a super-rule (which is probably all of them).
1485 * Before calling this function, the caller must make have removed 'rule' from
1486 * the classifier. If 'rule' is an exact-match rule, the caller is also
1487 * responsible for ensuring that it has been uninstalled from the datapath. */
1489 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1492 struct rule
*subrule
, *next
;
1493 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1494 revalidate_rule(ofproto
, subrule
);
1497 list_remove(&rule
->list
);
1503 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1505 const union ofp_action
*oa
;
1506 struct actions_iterator i
;
1508 if (out_port
== htons(OFPP_NONE
)) {
1511 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1512 oa
= actions_next(&i
)) {
1513 if (oa
->type
== htons(OFPAT_OUTPUT
) && oa
->output
.port
== out_port
) {
1520 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1521 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1523 * The flow that 'packet' actually contains does not need to actually match
1524 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1525 * the packet and byte counters for 'rule' will be credited for the packet sent
1526 * out whether or not the packet actually matches 'rule'.
1528 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1529 * the caller must already have accurately composed ODP actions for it given
1530 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1531 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1532 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1533 * actions and apply them to 'packet'. */
1535 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1536 struct ofpbuf
*packet
, const flow_t
*flow
)
1538 const union odp_action
*actions
;
1540 struct odp_actions a
;
1542 /* Grab or compose the ODP actions.
1544 * The special case for an exact-match 'rule' where 'flow' is not the
1545 * rule's flow is important to avoid, e.g., sending a packet out its input
1546 * port simply because the ODP actions were composed for the wrong
1548 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1549 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1550 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1551 packet
, &a
, NULL
, 0, NULL
)) {
1554 actions
= a
.actions
;
1555 n_actions
= a
.n_actions
;
1557 actions
= rule
->odp_actions
;
1558 n_actions
= rule
->n_odp_actions
;
1561 /* Execute the ODP actions. */
1562 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1563 actions
, n_actions
, packet
)) {
1564 struct odp_flow_stats stats
;
1565 flow_extract_stats(flow
, packet
, &stats
);
1566 update_stats(ofproto
, rule
, &stats
);
1567 rule
->used
= time_msec();
1568 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
1573 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
1576 struct rule
*displaced_rule
;
1578 /* Insert the rule in the classifier. */
1579 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
1580 if (!rule
->cr
.wc
.wildcards
) {
1581 rule_make_actions(p
, rule
, packet
);
1584 /* Send the packet and credit it to the rule. */
1587 flow_extract(packet
, 0, in_port
, &flow
);
1588 rule_execute(p
, rule
, packet
, &flow
);
1591 /* Install the rule in the datapath only after sending the packet, to
1592 * avoid packet reordering. */
1593 if (rule
->cr
.wc
.wildcards
) {
1594 COVERAGE_INC(ofproto_add_wc_flow
);
1595 p
->need_revalidate
= true;
1597 rule_install(p
, rule
, displaced_rule
);
1600 /* Free the rule that was displaced, if any. */
1601 if (displaced_rule
) {
1602 rule_destroy(p
, displaced_rule
);
1606 static struct rule
*
1607 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
1610 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
1611 rule
->idle_timeout
, rule
->hard_timeout
,
1613 COVERAGE_INC(ofproto_subrule_create
);
1614 cls_rule_from_flow(flow
, 0, (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
1615 : rule
->cr
.priority
), &subrule
->cr
);
1616 classifier_insert_exact(&ofproto
->cls
, &subrule
->cr
);
1622 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
1624 if (rule
->cr
.wc
.wildcards
) {
1625 COVERAGE_INC(ofproto_del_wc_flow
);
1626 ofproto
->need_revalidate
= true;
1628 rule_uninstall(ofproto
, rule
);
1630 classifier_remove(&ofproto
->cls
, &rule
->cr
);
1631 rule_destroy(ofproto
, rule
);
1634 /* Returns true if the actions changed, false otherwise. */
1636 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
1637 const struct ofpbuf
*packet
)
1639 const struct rule
*super
;
1640 struct odp_actions a
;
1643 assert(!rule
->cr
.wc
.wildcards
);
1645 super
= rule
->super
? rule
->super
: rule
;
1647 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
1648 packet
, &a
, &rule
->tags
, &rule
->may_install
,
1649 &rule
->nf_flow
.output_iface
);
1651 actions_len
= a
.n_actions
* sizeof *a
.actions
;
1652 if (rule
->n_odp_actions
!= a
.n_actions
1653 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
1654 COVERAGE_INC(ofproto_odp_unchanged
);
1655 free(rule
->odp_actions
);
1656 rule
->n_odp_actions
= a
.n_actions
;
1657 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
1665 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
1666 struct odp_flow_put
*put
)
1668 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
1669 put
->flow
.key
= rule
->cr
.flow
;
1670 put
->flow
.actions
= rule
->odp_actions
;
1671 put
->flow
.n_actions
= rule
->n_odp_actions
;
1672 put
->flow
.flags
= 0;
1674 return dpif_flow_put(ofproto
->dpif
, put
);
1678 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
1680 assert(!rule
->cr
.wc
.wildcards
);
1682 if (rule
->may_install
) {
1683 struct odp_flow_put put
;
1684 if (!do_put_flow(p
, rule
,
1685 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
1687 rule
->installed
= true;
1688 if (displaced_rule
) {
1689 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
1690 rule_post_uninstall(p
, displaced_rule
);
1693 } else if (displaced_rule
) {
1694 rule_uninstall(p
, displaced_rule
);
1699 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
1701 if (rule
->installed
) {
1702 struct odp_flow_put put
;
1703 COVERAGE_INC(ofproto_dp_missed
);
1704 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1706 rule_install(ofproto
, rule
, NULL
);
1711 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
1713 bool actions_changed
;
1714 uint16_t new_out_iface
, old_out_iface
;
1716 old_out_iface
= rule
->nf_flow
.output_iface
;
1717 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
1719 if (rule
->may_install
) {
1720 if (rule
->installed
) {
1721 if (actions_changed
) {
1722 struct odp_flow_put put
;
1723 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
1724 | ODPPF_ZERO_STATS
, &put
);
1725 update_stats(ofproto
, rule
, &put
.flow
.stats
);
1727 /* Temporarily set the old output iface so that NetFlow
1728 * messages have the correct output interface for the old
1730 new_out_iface
= rule
->nf_flow
.output_iface
;
1731 rule
->nf_flow
.output_iface
= old_out_iface
;
1732 rule_post_uninstall(ofproto
, rule
);
1733 rule
->nf_flow
.output_iface
= new_out_iface
;
1736 rule_install(ofproto
, rule
, NULL
);
1739 rule_uninstall(ofproto
, rule
);
1744 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
1746 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
1748 if (ofproto
->ofhooks
->account_flow_cb
1749 && total_bytes
> rule
->accounted_bytes
)
1751 ofproto
->ofhooks
->account_flow_cb(
1752 &rule
->cr
.flow
, rule
->odp_actions
, rule
->n_odp_actions
,
1753 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
1754 rule
->accounted_bytes
= total_bytes
;
1759 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
1761 assert(!rule
->cr
.wc
.wildcards
);
1762 if (rule
->installed
) {
1763 struct odp_flow odp_flow
;
1765 odp_flow
.key
= rule
->cr
.flow
;
1766 odp_flow
.actions
= NULL
;
1767 odp_flow
.n_actions
= 0;
1769 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
1770 update_stats(p
, rule
, &odp_flow
.stats
);
1772 rule
->installed
= false;
1774 rule_post_uninstall(p
, rule
);
1779 is_controller_rule(struct rule
*rule
)
1781 /* If the only action is send to the controller then don't report
1782 * NetFlow expiration messages since it is just part of the control
1783 * logic for the network and not real traffic. */
1785 if (rule
&& rule
->super
) {
1786 struct rule
*super
= rule
->super
;
1788 return super
->n_actions
== 1 &&
1789 super
->actions
[0].type
== htons(OFPAT_OUTPUT
) &&
1790 super
->actions
[0].output
.port
== htons(OFPP_CONTROLLER
);
1797 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
1799 struct rule
*super
= rule
->super
;
1801 rule_account(ofproto
, rule
, 0);
1803 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
1804 struct ofexpired expired
;
1805 expired
.flow
= rule
->cr
.flow
;
1806 expired
.packet_count
= rule
->packet_count
;
1807 expired
.byte_count
= rule
->byte_count
;
1808 expired
.used
= rule
->used
;
1809 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
1812 super
->packet_count
+= rule
->packet_count
;
1813 super
->byte_count
+= rule
->byte_count
;
1815 /* Reset counters to prevent double counting if the rule ever gets
1817 rule
->packet_count
= 0;
1818 rule
->byte_count
= 0;
1819 rule
->accounted_bytes
= 0;
1821 netflow_flow_clear(&rule
->nf_flow
);
1826 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
1827 struct rconn_packet_counter
*counter
)
1829 update_openflow_length(msg
);
1830 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
1836 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1837 int error
, const void *data
, size_t len
)
1840 struct ofp_error_msg
*oem
;
1842 if (!(error
>> 16)) {
1843 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
1848 COVERAGE_INC(ofproto_error
);
1849 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
1850 oh
? oh
->xid
: 0, &buf
);
1851 oem
->type
= htons((unsigned int) error
>> 16);
1852 oem
->code
= htons(error
& 0xffff);
1853 memcpy(oem
->data
, data
, len
);
1854 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1858 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1861 size_t oh_length
= ntohs(oh
->length
);
1862 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
1866 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
1868 opp
->port_no
= htons(opp
->port_no
);
1869 opp
->config
= htonl(opp
->config
);
1870 opp
->state
= htonl(opp
->state
);
1871 opp
->curr
= htonl(opp
->curr
);
1872 opp
->advertised
= htonl(opp
->advertised
);
1873 opp
->supported
= htonl(opp
->supported
);
1874 opp
->peer
= htonl(opp
->peer
);
1878 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
1880 struct ofp_header
*rq
= oh
;
1881 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
1886 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1887 struct ofp_header
*oh
)
1889 struct ofp_switch_features
*osf
;
1891 unsigned int port_no
;
1892 struct ofport
*port
;
1894 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
1895 osf
->datapath_id
= htonll(p
->datapath_id
);
1896 osf
->n_buffers
= htonl(pktbuf_capacity());
1898 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
1899 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
1900 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
1901 (1u << OFPAT_SET_VLAN_VID
) |
1902 (1u << OFPAT_SET_VLAN_PCP
) |
1903 (1u << OFPAT_STRIP_VLAN
) |
1904 (1u << OFPAT_SET_DL_SRC
) |
1905 (1u << OFPAT_SET_DL_DST
) |
1906 (1u << OFPAT_SET_NW_SRC
) |
1907 (1u << OFPAT_SET_NW_DST
) |
1908 (1u << OFPAT_SET_NW_TOS
) |
1909 (1u << OFPAT_SET_TP_SRC
) |
1910 (1u << OFPAT_SET_TP_DST
));
1912 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1913 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
1916 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1921 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1922 struct ofp_header
*oh
)
1925 struct ofp_switch_config
*osc
;
1929 /* Figure out flags. */
1930 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
1931 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
1934 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
1935 osc
->flags
= htons(flags
);
1936 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
1937 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1943 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
1944 struct ofp_switch_config
*osc
)
1949 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
1953 flags
= ntohs(osc
->flags
);
1955 if (ofconn
== p
->controller
) {
1956 switch (flags
& OFPC_FRAG_MASK
) {
1957 case OFPC_FRAG_NORMAL
:
1958 dpif_set_drop_frags(p
->dpif
, false);
1960 case OFPC_FRAG_DROP
:
1961 dpif_set_drop_frags(p
->dpif
, true);
1964 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
1970 if ((ntohs(osc
->miss_send_len
) != 0) != (ofconn
->miss_send_len
!= 0)) {
1971 if (ntohs(osc
->miss_send_len
) != 0) {
1972 ofconn
->pktbuf
= pktbuf_create();
1974 pktbuf_destroy(ofconn
->pktbuf
);
1978 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
1984 add_output_group_action(struct odp_actions
*actions
, uint16_t group
,
1985 uint16_t *nf_output_iface
)
1987 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
1989 if (group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
) {
1990 *nf_output_iface
= NF_OUT_FLOOD
;
1995 add_controller_action(struct odp_actions
*actions
,
1996 const struct ofp_action_output
*oao
)
1998 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
1999 a
->controller
.arg
= oao
->max_len
? ntohs(oao
->max_len
) : UINT32_MAX
;
2002 struct action_xlate_ctx
{
2004 flow_t flow
; /* Flow to which these actions correspond. */
2005 int recurse
; /* Recursion level, via xlate_table_action. */
2006 struct ofproto
*ofproto
;
2007 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2008 * null pointer if we are revalidating
2009 * without a packet to refer to. */
2012 struct odp_actions
*out
; /* Datapath actions. */
2013 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2014 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2015 * be reassessed for every packet. */
2016 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2019 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2020 struct action_xlate_ctx
*ctx
);
2023 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2025 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
2028 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2029 /* Forwarding disabled on port. */
2034 * We don't have an ofport record for this port, but it doesn't hurt to
2035 * allow forwarding to it anyhow. Maybe such a port will appear later
2036 * and we're pre-populating the flow table.
2040 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2041 ctx
->nf_output_iface
= port
;
2044 static struct rule
*
2045 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
2048 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2050 /* The rule we found might not be valid, since we could be in need of
2051 * revalidation. If it is not valid, don't return it. */
2054 && ofproto
->need_revalidate
2055 && !revalidate_rule(ofproto
, rule
)) {
2056 COVERAGE_INC(ofproto_invalidated
);
2064 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2066 if (!ctx
->recurse
) {
2067 uint16_t old_in_port
;
2070 /* Look up a flow with 'in_port' as the input port. Then restore the
2071 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2072 * have surprising behavior). */
2073 old_in_port
= ctx
->flow
.in_port
;
2074 ctx
->flow
.in_port
= in_port
;
2075 rule
= lookup_valid_rule(ctx
->ofproto
, &ctx
->flow
);
2076 ctx
->flow
.in_port
= old_in_port
;
2084 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2091 xlate_output_action(struct action_xlate_ctx
*ctx
,
2092 const struct ofp_action_output
*oao
)
2095 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2097 ctx
->nf_output_iface
= NF_OUT_DROP
;
2099 switch (ntohs(oao
->port
)) {
2101 add_output_action(ctx
, ctx
->flow
.in_port
);
2104 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2107 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2108 ctx
->out
, ctx
->tags
,
2109 &ctx
->nf_output_iface
,
2110 ctx
->ofproto
->aux
)) {
2111 COVERAGE_INC(ofproto_uninstallable
);
2112 ctx
->may_set_up_flow
= false;
2116 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
,
2117 &ctx
->nf_output_iface
);
2120 add_output_group_action(ctx
->out
, DP_GROUP_ALL
, &ctx
->nf_output_iface
);
2122 case OFPP_CONTROLLER
:
2123 add_controller_action(ctx
->out
, oao
);
2126 add_output_action(ctx
, ODPP_LOCAL
);
2129 odp_port
= ofp_port_to_odp_port(ntohs(oao
->port
));
2130 if (odp_port
!= ctx
->flow
.in_port
) {
2131 add_output_action(ctx
, odp_port
);
2136 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2137 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2138 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2139 ctx
->nf_output_iface
= prev_nf_output_iface
;
2140 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2141 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2142 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2147 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2148 const struct nx_action_header
*nah
)
2150 const struct nx_action_resubmit
*nar
;
2151 const struct nx_action_set_tunnel
*nast
;
2152 union odp_action
*oa
;
2153 int subtype
= ntohs(nah
->subtype
);
2155 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2157 case NXAST_RESUBMIT
:
2158 nar
= (const struct nx_action_resubmit
*) nah
;
2159 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2162 case NXAST_SET_TUNNEL
:
2163 nast
= (const struct nx_action_set_tunnel
*) nah
;
2164 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2165 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2168 /* If you add a new action here that modifies flow data, don't forget to
2169 * update the flow key in ctx->flow in the same key. */
2172 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2178 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2179 struct action_xlate_ctx
*ctx
)
2181 struct actions_iterator iter
;
2182 const union ofp_action
*ia
;
2183 const struct ofport
*port
;
2185 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
.in_port
);
2186 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2187 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, stp_eth_addr
)
2188 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2189 /* Drop this flow. */
2193 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2194 uint16_t type
= ntohs(ia
->type
);
2195 union odp_action
*oa
;
2199 xlate_output_action(ctx
, &ia
->output
);
2202 case OFPAT_SET_VLAN_VID
:
2203 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2204 ctx
->flow
.dl_vlan
= oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2207 case OFPAT_SET_VLAN_PCP
:
2208 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2209 ctx
->flow
.dl_vlan_pcp
= oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2212 case OFPAT_STRIP_VLAN
:
2213 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2214 ctx
->flow
.dl_vlan
= OFP_VLAN_NONE
;
2215 ctx
->flow
.dl_vlan_pcp
= 0;
2218 case OFPAT_SET_DL_SRC
:
2219 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2220 memcpy(oa
->dl_addr
.dl_addr
,
2221 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2222 memcpy(ctx
->flow
.dl_src
,
2223 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2226 case OFPAT_SET_DL_DST
:
2227 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2228 memcpy(oa
->dl_addr
.dl_addr
,
2229 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2230 memcpy(ctx
->flow
.dl_dst
,
2231 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2234 case OFPAT_SET_NW_SRC
:
2235 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2236 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2239 case OFPAT_SET_NW_DST
:
2240 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2241 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2244 case OFPAT_SET_NW_TOS
:
2245 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2246 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2249 case OFPAT_SET_TP_SRC
:
2250 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2251 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2254 case OFPAT_SET_TP_DST
:
2255 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2256 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2260 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2264 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2271 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2272 const flow_t
*flow
, struct ofproto
*ofproto
,
2273 const struct ofpbuf
*packet
,
2274 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2275 uint16_t *nf_output_iface
)
2277 tag_type no_tags
= 0;
2278 struct action_xlate_ctx ctx
;
2279 COVERAGE_INC(ofproto_ofp2odp
);
2280 odp_actions_init(out
);
2283 ctx
.ofproto
= ofproto
;
2284 ctx
.packet
= packet
;
2286 ctx
.tags
= tags
? tags
: &no_tags
;
2287 ctx
.may_set_up_flow
= true;
2288 ctx
.nf_output_iface
= NF_OUT_DROP
;
2289 do_xlate_actions(in
, n_in
, &ctx
);
2291 /* Check with in-band control to see if we're allowed to set up this
2293 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2294 ctx
.may_set_up_flow
= false;
2297 if (may_set_up_flow
) {
2298 *may_set_up_flow
= ctx
.may_set_up_flow
;
2300 if (nf_output_iface
) {
2301 *nf_output_iface
= ctx
.nf_output_iface
;
2303 if (odp_actions_overflow(out
)) {
2304 odp_actions_init(out
);
2305 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2311 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2312 struct ofp_header
*oh
)
2314 struct ofp_packet_out
*opo
;
2315 struct ofpbuf payload
, *buffer
;
2316 struct odp_actions actions
;
2322 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2326 opo
= (struct ofp_packet_out
*) oh
;
2328 COVERAGE_INC(ofproto_packet_out
);
2329 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2330 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2332 if (error
|| !buffer
) {
2340 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2341 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2342 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2347 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2349 ofpbuf_delete(buffer
);
2355 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2356 uint32_t config
, uint32_t mask
)
2358 mask
&= config
^ port
->opp
.config
;
2359 if (mask
& OFPPC_PORT_DOWN
) {
2360 if (config
& OFPPC_PORT_DOWN
) {
2361 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2363 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2366 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2367 if (mask
& REVALIDATE_BITS
) {
2368 COVERAGE_INC(ofproto_costly_flags
);
2369 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2370 p
->need_revalidate
= true;
2372 #undef REVALIDATE_BITS
2373 if (mask
& OFPPC_NO_FLOOD
) {
2374 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2375 refresh_port_groups(p
);
2377 if (mask
& OFPPC_NO_PACKET_IN
) {
2378 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2383 handle_port_mod(struct ofproto
*p
, struct ofp_header
*oh
)
2385 const struct ofp_port_mod
*opm
;
2386 struct ofport
*port
;
2389 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2393 opm
= (struct ofp_port_mod
*) oh
;
2395 port
= port_array_get(&p
->ports
,
2396 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2398 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2399 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2400 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2402 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2403 if (opm
->advertise
) {
2404 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2410 static struct ofpbuf
*
2411 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2413 struct ofp_stats_reply
*osr
;
2416 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2417 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2419 osr
->flags
= htons(0);
2423 static struct ofpbuf
*
2424 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2426 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2430 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2432 struct ofpbuf
*msg
= *msgp
;
2433 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2434 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2435 struct ofp_stats_reply
*reply
= msg
->data
;
2436 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2437 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2438 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2440 return ofpbuf_put_uninit(*msgp
, nbytes
);
2444 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2445 struct ofp_stats_request
*request
)
2447 struct ofp_desc_stats
*ods
;
2450 msg
= start_stats_reply(request
, sizeof *ods
);
2451 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2452 memset(ods
, 0, sizeof *ods
);
2453 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
2454 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
2455 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
2456 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
2457 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
2458 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2464 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2466 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2467 int *n_subrules
= n_subrules_
;
2475 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2476 struct ofp_stats_request
*request
)
2478 struct ofp_table_stats
*ots
;
2480 struct odp_stats dpstats
;
2481 int n_exact
, n_subrules
, n_wild
;
2483 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2485 /* Count rules of various kinds. */
2487 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2488 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2489 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2492 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2493 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2494 memset(ots
, 0, sizeof *ots
);
2495 ots
->table_id
= TABLEID_HASH
;
2496 strcpy(ots
->name
, "hash");
2497 ots
->wildcards
= htonl(0);
2498 ots
->max_entries
= htonl(dpstats
.max_capacity
);
2499 ots
->active_count
= htonl(n_exact
);
2500 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
2502 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
2504 /* Classifier table. */
2505 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2506 memset(ots
, 0, sizeof *ots
);
2507 ots
->table_id
= TABLEID_CLASSIFIER
;
2508 strcpy(ots
->name
, "classifier");
2509 ots
->wildcards
= p
->tun_id_from_cookie
? htonl(OVSFW_ALL
)
2511 ots
->max_entries
= htonl(65536);
2512 ots
->active_count
= htonl(n_wild
);
2513 ots
->lookup_count
= htonll(0); /* XXX */
2514 ots
->matched_count
= htonll(0); /* XXX */
2516 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2521 append_port_stat(struct ofport
*port
, uint16_t port_no
, struct ofconn
*ofconn
,
2524 struct netdev_stats stats
;
2525 struct ofp_port_stats
*ops
;
2527 /* Intentionally ignore return value, since errors will set
2528 * 'stats' to all-1s, which is correct for OpenFlow, and
2529 * netdev_get_stats() will log errors. */
2530 netdev_get_stats(port
->netdev
, &stats
);
2532 ops
= append_stats_reply(sizeof *ops
, ofconn
, &msg
);
2533 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
2534 memset(ops
->pad
, 0, sizeof ops
->pad
);
2535 ops
->rx_packets
= htonll(stats
.rx_packets
);
2536 ops
->tx_packets
= htonll(stats
.tx_packets
);
2537 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
2538 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
2539 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
2540 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
2541 ops
->rx_errors
= htonll(stats
.rx_errors
);
2542 ops
->tx_errors
= htonll(stats
.tx_errors
);
2543 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
2544 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
2545 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
2546 ops
->collisions
= htonll(stats
.collisions
);
2550 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2551 struct ofp_stats_request
*osr
,
2554 struct ofp_port_stats_request
*psr
;
2555 struct ofp_port_stats
*ops
;
2557 struct ofport
*port
;
2558 unsigned int port_no
;
2560 if (arg_size
!= sizeof *psr
) {
2561 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2563 psr
= (struct ofp_port_stats_request
*) osr
->body
;
2565 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
2566 if (psr
->port_no
!= htons(OFPP_NONE
)) {
2567 port
= port_array_get(&p
->ports
,
2568 ofp_port_to_odp_port(ntohs(psr
->port_no
)));
2570 append_port_stat(port
, ntohs(psr
->port_no
), ofconn
, msg
);
2573 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2574 append_port_stat(port
, port_no
, ofconn
, msg
);
2578 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2582 struct flow_stats_cbdata
{
2583 struct ofproto
*ofproto
;
2584 struct ofconn
*ofconn
;
2589 /* Obtains statistic counters for 'rule' within 'p' and stores them into
2590 * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the
2591 * returned statistic include statistics for all of 'rule''s subrules. */
2593 query_stats(struct ofproto
*p
, struct rule
*rule
,
2594 uint64_t *packet_countp
, uint64_t *byte_countp
)
2596 uint64_t packet_count
, byte_count
;
2597 struct rule
*subrule
;
2598 struct odp_flow
*odp_flows
;
2601 /* Start from historical data for 'rule' itself that are no longer tracked
2602 * by the datapath. This counts, for example, subrules that have
2604 packet_count
= rule
->packet_count
;
2605 byte_count
= rule
->byte_count
;
2607 /* Prepare to ask the datapath for statistics on 'rule', or if it is
2608 * wildcarded then on all of its subrules.
2610 * Also, add any statistics that are not tracked by the datapath for each
2611 * subrule. This includes, for example, statistics for packets that were
2612 * executed "by hand" by ofproto via dpif_execute() but must be accounted
2614 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
2615 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
2616 if (rule
->cr
.wc
.wildcards
) {
2618 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
2619 odp_flows
[i
++].key
= subrule
->cr
.flow
;
2620 packet_count
+= subrule
->packet_count
;
2621 byte_count
+= subrule
->byte_count
;
2624 odp_flows
[0].key
= rule
->cr
.flow
;
2627 /* Fetch up-to-date statistics from the datapath and add them in. */
2628 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
2630 for (i
= 0; i
< n_odp_flows
; i
++) {
2631 struct odp_flow
*odp_flow
= &odp_flows
[i
];
2632 packet_count
+= odp_flow
->stats
.n_packets
;
2633 byte_count
+= odp_flow
->stats
.n_bytes
;
2638 /* Return the stats to the caller. */
2639 *packet_countp
= packet_count
;
2640 *byte_countp
= byte_count
;
2644 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2646 struct rule
*rule
= rule_from_cls_rule(rule_
);
2647 struct flow_stats_cbdata
*cbdata
= cbdata_
;
2648 struct ofp_flow_stats
*ofs
;
2649 uint64_t packet_count
, byte_count
;
2650 size_t act_len
, len
;
2651 long long int tdiff
= time_msec() - rule
->created
;
2652 uint32_t sec
= tdiff
/ 1000;
2653 uint32_t msec
= tdiff
- (sec
* 1000);
2655 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2659 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2660 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
2662 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2664 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
2665 ofs
->length
= htons(len
);
2666 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
2668 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
2669 cbdata
->ofproto
->tun_id_from_cookie
, &ofs
->match
);
2670 ofs
->duration_sec
= htonl(sec
);
2671 ofs
->duration_nsec
= htonl(msec
* 1000000);
2672 ofs
->cookie
= rule
->flow_cookie
;
2673 ofs
->priority
= htons(rule
->cr
.priority
);
2674 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
2675 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
2676 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
2677 ofs
->packet_count
= htonll(packet_count
);
2678 ofs
->byte_count
= htonll(byte_count
);
2679 memcpy(ofs
->actions
, rule
->actions
, act_len
);
2683 table_id_to_include(uint8_t table_id
)
2685 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
2686 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
2687 : table_id
== 0xff ? CLS_INC_ALL
2692 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2693 const struct ofp_stats_request
*osr
,
2696 struct ofp_flow_stats_request
*fsr
;
2697 struct flow_stats_cbdata cbdata
;
2698 struct cls_rule target
;
2700 if (arg_size
!= sizeof *fsr
) {
2701 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2703 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
2705 COVERAGE_INC(ofproto_flows_req
);
2707 cbdata
.ofconn
= ofconn
;
2708 cbdata
.out_port
= fsr
->out_port
;
2709 cbdata
.msg
= start_stats_reply(osr
, 1024);
2710 cls_rule_from_match(&fsr
->match
, 0, false, 0, &target
);
2711 classifier_for_each_match(&p
->cls
, &target
,
2712 table_id_to_include(fsr
->table_id
),
2713 flow_stats_cb
, &cbdata
);
2714 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
2718 struct flow_stats_ds_cbdata
{
2719 struct ofproto
*ofproto
;
2724 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
2726 struct rule
*rule
= rule_from_cls_rule(rule_
);
2727 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
2728 struct ds
*results
= cbdata
->results
;
2729 struct ofp_match match
;
2730 uint64_t packet_count
, byte_count
;
2731 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2733 /* Don't report on subrules. */
2734 if (rule
->super
!= NULL
) {
2738 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2739 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
2740 cbdata
->ofproto
->tun_id_from_cookie
, &match
);
2742 ds_put_format(results
, "duration=%llds, ",
2743 (time_msec() - rule
->created
) / 1000);
2744 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2745 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2746 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2747 ofp_print_match(results
, &match
, true);
2748 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
2749 ds_put_cstr(results
, "\n");
2752 /* Adds a pretty-printed description of all flows to 'results', including
2753 * those marked hidden by secchan (e.g., by in-band control). */
2755 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2757 struct ofp_match match
;
2758 struct cls_rule target
;
2759 struct flow_stats_ds_cbdata cbdata
;
2761 memset(&match
, 0, sizeof match
);
2762 match
.wildcards
= htonl(OVSFW_ALL
);
2765 cbdata
.results
= results
;
2767 cls_rule_from_match(&match
, 0, false, 0, &target
);
2768 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2769 flow_stats_ds_cb
, &cbdata
);
2772 struct aggregate_stats_cbdata
{
2773 struct ofproto
*ofproto
;
2775 uint64_t packet_count
;
2776 uint64_t byte_count
;
2781 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2783 struct rule
*rule
= rule_from_cls_rule(rule_
);
2784 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
2785 uint64_t packet_count
, byte_count
;
2787 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2791 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2793 cbdata
->packet_count
+= packet_count
;
2794 cbdata
->byte_count
+= byte_count
;
2799 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2800 const struct ofp_stats_request
*osr
,
2803 struct ofp_aggregate_stats_request
*asr
;
2804 struct ofp_aggregate_stats_reply
*reply
;
2805 struct aggregate_stats_cbdata cbdata
;
2806 struct cls_rule target
;
2809 if (arg_size
!= sizeof *asr
) {
2810 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2812 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
2814 COVERAGE_INC(ofproto_agg_request
);
2816 cbdata
.out_port
= asr
->out_port
;
2817 cbdata
.packet_count
= 0;
2818 cbdata
.byte_count
= 0;
2820 cls_rule_from_match(&asr
->match
, 0, false, 0, &target
);
2821 classifier_for_each_match(&p
->cls
, &target
,
2822 table_id_to_include(asr
->table_id
),
2823 aggregate_stats_cb
, &cbdata
);
2825 msg
= start_stats_reply(osr
, sizeof *reply
);
2826 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
2827 reply
->flow_count
= htonl(cbdata
.n_flows
);
2828 reply
->packet_count
= htonll(cbdata
.packet_count
);
2829 reply
->byte_count
= htonll(cbdata
.byte_count
);
2830 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2835 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2836 struct ofp_header
*oh
)
2838 struct ofp_stats_request
*osr
;
2842 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
2847 osr
= (struct ofp_stats_request
*) oh
;
2849 switch (ntohs(osr
->type
)) {
2851 return handle_desc_stats_request(p
, ofconn
, osr
);
2854 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
2856 case OFPST_AGGREGATE
:
2857 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
2860 return handle_table_stats_request(p
, ofconn
, osr
);
2863 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
2866 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
2869 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
2873 static long long int
2874 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
2876 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
2880 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
2881 const struct odp_flow_stats
*stats
)
2883 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
2884 if (used
> rule
->used
) {
2886 if (rule
->super
&& used
> rule
->super
->used
) {
2887 rule
->super
->used
= used
;
2889 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
2894 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
2895 const struct odp_flow_stats
*stats
)
2897 if (stats
->n_packets
) {
2898 update_time(ofproto
, rule
, stats
);
2899 rule
->packet_count
+= stats
->n_packets
;
2900 rule
->byte_count
+= stats
->n_bytes
;
2901 netflow_flow_update_flags(&rule
->nf_flow
, stats
->ip_tos
,
2906 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
2907 * in which no matching flow already exists in the flow table.
2909 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
2910 * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
2911 * code as encoded by ofp_mkerr() on failure.
2913 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
2916 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
2917 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
2919 struct ofpbuf
*packet
;
2924 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
2928 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
2930 if (classifier_rule_overlaps(&p
->cls
, &flow
, wildcards
,
2931 ntohs(ofm
->priority
))) {
2932 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
2936 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
2937 n_actions
, ntohs(ofm
->idle_timeout
),
2938 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
2939 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
2940 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
2941 p
->tun_id_from_cookie
, ofm
->cookie
, &rule
->cr
);
2944 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
2945 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
2949 in_port
= UINT16_MAX
;
2952 rule_insert(p
, rule
, packet
, in_port
);
2953 ofpbuf_delete(packet
);
2957 static struct rule
*
2958 find_flow_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
2963 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
2965 return rule_from_cls_rule(classifier_find_rule_exactly(
2966 &p
->cls
, &flow
, wildcards
,
2967 ntohs(ofm
->priority
)));
2971 send_buffered_packet(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
2972 struct rule
*rule
, const struct ofp_flow_mod
*ofm
)
2974 struct ofpbuf
*packet
;
2979 if (ofm
->buffer_id
== htonl(UINT32_MAX
)) {
2983 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
2989 flow_extract(packet
, 0, in_port
, &flow
);
2990 rule_execute(ofproto
, rule
, packet
, &flow
);
2991 ofpbuf_delete(packet
);
2996 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
2998 struct modify_flows_cbdata
{
2999 struct ofproto
*ofproto
;
3000 const struct ofp_flow_mod
*ofm
;
3005 static int modify_flow(struct ofproto
*, const struct ofp_flow_mod
*,
3006 size_t n_actions
, struct rule
*);
3007 static void modify_flows_cb(struct cls_rule
*, void *cbdata_
);
3009 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3010 * encoded by ofp_mkerr() on failure.
3012 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3015 modify_flows_loose(struct ofproto
*p
, struct ofconn
*ofconn
,
3016 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3018 struct modify_flows_cbdata cbdata
;
3019 struct cls_rule target
;
3023 cbdata
.n_actions
= n_actions
;
3024 cbdata
.match
= NULL
;
3026 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3029 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3030 modify_flows_cb
, &cbdata
);
3032 /* This credits the packet to whichever flow happened to happened to
3033 * match last. That's weird. Maybe we should do a lookup for the
3034 * flow that actually matches the packet? Who knows. */
3035 send_buffered_packet(p
, ofconn
, cbdata
.match
, ofm
);
3038 return add_flow(p
, ofconn
, ofm
, n_actions
);
3042 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3043 * code as encoded by ofp_mkerr() on failure.
3045 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3048 modify_flow_strict(struct ofproto
*p
, struct ofconn
*ofconn
,
3049 struct ofp_flow_mod
*ofm
, size_t n_actions
)
3051 struct rule
*rule
= find_flow_strict(p
, ofm
);
3052 if (rule
&& !rule_is_hidden(rule
)) {
3053 modify_flow(p
, ofm
, n_actions
, rule
);
3054 return send_buffered_packet(p
, ofconn
, rule
, ofm
);
3056 return add_flow(p
, ofconn
, ofm
, n_actions
);
3060 /* Callback for modify_flows_loose(). */
3062 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3064 struct rule
*rule
= rule_from_cls_rule(rule_
);
3065 struct modify_flows_cbdata
*cbdata
= cbdata_
;
3067 if (!rule_is_hidden(rule
)) {
3068 cbdata
->match
= rule
;
3069 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
, rule
);
3073 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3074 * been identified as a flow in 'p''s flow table to be modified, by changing
3075 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3076 * ofp_action[] structures). */
3078 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
3079 size_t n_actions
, struct rule
*rule
)
3081 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
3083 rule
->flow_cookie
= ofm
->cookie
;
3085 /* If the actions are the same, do nothing. */
3086 if (n_actions
== rule
->n_actions
3087 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
3092 /* Replace actions. */
3093 free(rule
->actions
);
3094 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
3095 rule
->n_actions
= n_actions
;
3097 /* Make sure that the datapath gets updated properly. */
3098 if (rule
->cr
.wc
.wildcards
) {
3099 COVERAGE_INC(ofproto_mod_wc_flow
);
3100 p
->need_revalidate
= true;
3102 rule_update_actions(p
, rule
);
3108 /* OFPFC_DELETE implementation. */
3110 struct delete_flows_cbdata
{
3111 struct ofproto
*ofproto
;
3115 static void delete_flows_cb(struct cls_rule
*, void *cbdata_
);
3116 static void delete_flow(struct ofproto
*, struct rule
*, uint16_t out_port
);
3118 /* Implements OFPFC_DELETE. */
3120 delete_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3122 struct delete_flows_cbdata cbdata
;
3123 struct cls_rule target
;
3126 cbdata
.out_port
= ofm
->out_port
;
3128 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3131 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3132 delete_flows_cb
, &cbdata
);
3135 /* Implements OFPFC_DELETE_STRICT. */
3137 delete_flow_strict(struct ofproto
*p
, struct ofp_flow_mod
*ofm
)
3139 struct rule
*rule
= find_flow_strict(p
, ofm
);
3141 delete_flow(p
, rule
, ofm
->out_port
);
3145 /* Callback for delete_flows_loose(). */
3147 delete_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3149 struct rule
*rule
= rule_from_cls_rule(rule_
);
3150 struct delete_flows_cbdata
*cbdata
= cbdata_
;
3152 delete_flow(cbdata
->ofproto
, rule
, cbdata
->out_port
);
3155 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
3156 * been identified as a flow to delete from 'p''s flow table, by deleting the
3157 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
3160 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
3161 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
3162 * specified 'out_port'. */
3164 delete_flow(struct ofproto
*p
, struct rule
*rule
, uint16_t out_port
)
3166 if (rule_is_hidden(rule
)) {
3170 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
3174 send_flow_removed(p
, rule
, time_msec(), OFPRR_DELETE
);
3175 rule_remove(p
, rule
);
3179 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3180 struct ofp_flow_mod
*ofm
)
3185 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3186 sizeof *ofm
->actions
, &n_actions
);
3191 /* We do not support the emergency flow cache. It will hopefully
3192 * get dropped from OpenFlow in the near future. */
3193 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3194 /* There isn't a good fit for an error code, so just state that the
3195 * flow table is full. */
3196 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3199 normalize_match(&ofm
->match
);
3200 if (!ofm
->match
.wildcards
) {
3201 ofm
->priority
= htons(UINT16_MAX
);
3204 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3205 n_actions
, p
->max_ports
);
3210 switch (ntohs(ofm
->command
)) {
3212 return add_flow(p
, ofconn
, ofm
, n_actions
);
3215 return modify_flows_loose(p
, ofconn
, ofm
, n_actions
);
3217 case OFPFC_MODIFY_STRICT
:
3218 return modify_flow_strict(p
, ofconn
, ofm
, n_actions
);
3221 delete_flows_loose(p
, ofm
);
3224 case OFPFC_DELETE_STRICT
:
3225 delete_flow_strict(p
, ofm
);
3229 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3234 handle_tun_id_from_cookie(struct ofproto
*p
, struct nxt_tun_id_cookie
*msg
)
3238 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
3243 p
->tun_id_from_cookie
= !!msg
->set
;
3248 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3250 struct ofp_vendor_header
*ovh
= msg
;
3251 struct nicira_header
*nh
;
3253 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3254 VLOG_WARN_RL(&rl
, "received vendor message of length %zu "
3255 "(expected at least %zu)",
3256 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
3257 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3259 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3260 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3262 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3263 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %zu "
3264 "(expected at least %zu)",
3265 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
3266 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3270 switch (ntohl(nh
->subtype
)) {
3271 case NXT_STATUS_REQUEST
:
3272 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3275 case NXT_TUN_ID_FROM_COOKIE
:
3276 return handle_tun_id_from_cookie(p
, msg
);
3279 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3283 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3285 struct ofp_header
*ob
;
3288 /* Currently, everything executes synchronously, so we can just
3289 * immediately send the barrier reply. */
3290 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
3291 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3296 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
3297 struct ofpbuf
*ofp_msg
)
3299 struct ofp_header
*oh
= ofp_msg
->data
;
3302 COVERAGE_INC(ofproto_recv_openflow
);
3304 case OFPT_ECHO_REQUEST
:
3305 error
= handle_echo_request(ofconn
, oh
);
3308 case OFPT_ECHO_REPLY
:
3312 case OFPT_FEATURES_REQUEST
:
3313 error
= handle_features_request(p
, ofconn
, oh
);
3316 case OFPT_GET_CONFIG_REQUEST
:
3317 error
= handle_get_config_request(p
, ofconn
, oh
);
3320 case OFPT_SET_CONFIG
:
3321 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
3324 case OFPT_PACKET_OUT
:
3325 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
3329 error
= handle_port_mod(p
, oh
);
3333 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
3336 case OFPT_STATS_REQUEST
:
3337 error
= handle_stats_request(p
, ofconn
, oh
);
3341 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
3344 case OFPT_BARRIER_REQUEST
:
3345 error
= handle_barrier_request(ofconn
, oh
);
3349 if (VLOG_IS_WARN_ENABLED()) {
3350 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
3351 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
3354 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
3359 send_error_oh(ofconn
, ofp_msg
->data
, error
);
3364 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3366 struct odp_msg
*msg
= packet
->data
;
3367 uint16_t in_port
= odp_port_to_ofp_port(msg
->port
);
3369 struct ofpbuf payload
;
3372 payload
.data
= msg
+ 1;
3373 payload
.size
= msg
->length
- sizeof *msg
;
3374 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
3376 /* Check with in-band control to see if this packet should be sent
3377 * to the local port regardless of the flow table. */
3378 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
3379 union odp_action action
;
3381 memset(&action
, 0, sizeof(action
));
3382 action
.output
.type
= ODPAT_OUTPUT
;
3383 action
.output
.port
= ODPP_LOCAL
;
3384 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
3387 rule
= lookup_valid_rule(p
, &flow
);
3389 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3390 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
3392 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
3393 COVERAGE_INC(ofproto_no_packet_in
);
3394 /* XXX install 'drop' flow entry */
3395 ofpbuf_delete(packet
);
3399 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
3402 COVERAGE_INC(ofproto_packet_in
);
3403 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3407 if (rule
->cr
.wc
.wildcards
) {
3408 rule
= rule_create_subrule(p
, rule
, &flow
);
3409 rule_make_actions(p
, rule
, packet
);
3411 if (!rule
->may_install
) {
3412 /* The rule is not installable, that is, we need to process every
3413 * packet, so process the current packet and set its actions into
3415 rule_make_actions(p
, rule
, packet
);
3417 /* XXX revalidate rule if it needs it */
3421 rule_execute(p
, rule
, &payload
, &flow
);
3422 rule_reinstall(p
, rule
);
3424 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
3425 && rconn_is_connected(p
->controller
->rconn
)) {
3427 * Extra-special case for fail-open mode.
3429 * We are in fail-open mode and the packet matched the fail-open rule,
3430 * but we are connected to a controller too. We should send the packet
3431 * up to the controller in the hope that it will try to set up a flow
3432 * and thereby allow us to exit fail-open.
3434 * See the top-level comment in fail-open.c for more information.
3436 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3438 ofpbuf_delete(packet
);
3443 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3445 struct odp_msg
*msg
= packet
->data
;
3447 switch (msg
->type
) {
3448 case _ODPL_ACTION_NR
:
3449 COVERAGE_INC(ofproto_ctlr_action
);
3450 pinsched_send(p
->action_sched
, odp_port_to_ofp_port(msg
->port
), packet
,
3451 send_packet_in_action
, p
);
3454 case _ODPL_SFLOW_NR
:
3456 ofproto_sflow_received(p
->sflow
, msg
);
3458 ofpbuf_delete(packet
);
3462 handle_odp_miss_msg(p
, packet
);
3466 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
3473 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
3475 struct rule
*sub
= rule_from_cls_rule(sub_
);
3476 struct revalidate_cbdata
*cbdata
= cbdata_
;
3478 if (cbdata
->revalidate_all
3479 || (cbdata
->revalidate_subrules
&& sub
->super
)
3480 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
3481 revalidate_rule(cbdata
->ofproto
, sub
);
3486 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
3488 const flow_t
*flow
= &rule
->cr
.flow
;
3490 COVERAGE_INC(ofproto_revalidate_rule
);
3493 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
3495 rule_remove(p
, rule
);
3497 } else if (super
!= rule
->super
) {
3498 COVERAGE_INC(ofproto_revalidate_moved
);
3499 list_remove(&rule
->list
);
3500 list_push_back(&super
->list
, &rule
->list
);
3501 rule
->super
= super
;
3502 rule
->hard_timeout
= super
->hard_timeout
;
3503 rule
->idle_timeout
= super
->idle_timeout
;
3504 rule
->created
= super
->created
;
3509 rule_update_actions(p
, rule
);
3513 static struct ofpbuf
*
3514 compose_flow_removed(struct ofproto
*p
, const struct rule
*rule
,
3515 long long int now
, uint8_t reason
)
3517 struct ofp_flow_removed
*ofr
;
3519 long long int tdiff
= now
- rule
->created
;
3520 uint32_t sec
= tdiff
/ 1000;
3521 uint32_t msec
= tdiff
- (sec
* 1000);
3523 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
3524 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, p
->tun_id_from_cookie
,
3526 ofr
->cookie
= rule
->flow_cookie
;
3527 ofr
->priority
= htons(rule
->cr
.priority
);
3528 ofr
->reason
= reason
;
3529 ofr
->duration_sec
= htonl(sec
);
3530 ofr
->duration_nsec
= htonl(msec
* 1000000);
3531 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
3532 ofr
->packet_count
= htonll(rule
->packet_count
);
3533 ofr
->byte_count
= htonll(rule
->byte_count
);
3539 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
3541 assert(rule
->installed
);
3542 assert(!rule
->cr
.wc
.wildcards
);
3545 rule_remove(ofproto
, rule
);
3547 rule_uninstall(ofproto
, rule
);
3551 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
3552 long long int now
, uint8_t reason
)
3554 struct ofconn
*ofconn
;
3555 struct ofconn
*prev
;
3556 struct ofpbuf
*buf
= NULL
;
3558 /* We limit the maximum number of queued flow expirations it by accounting
3559 * them under the counter for replies. That works because preventing
3560 * OpenFlow requests from being processed also prevents new flows from
3561 * being added (and expiring). (It also prevents processing OpenFlow
3562 * requests that would not add new flows, so it is imperfect.) */
3565 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3566 if (rule
->send_flow_removed
&& rconn_is_connected(ofconn
->rconn
)) {
3568 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
3570 buf
= compose_flow_removed(p
, rule
, now
, reason
);
3576 queue_tx(buf
, prev
, prev
->reply_counter
);
3582 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
3584 struct ofproto
*p
= p_
;
3585 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
3586 long long int hard_expire
, idle_expire
, expire
, now
;
3588 hard_expire
= (rule
->hard_timeout
3589 ? rule
->created
+ rule
->hard_timeout
* 1000
3591 idle_expire
= (rule
->idle_timeout
3592 && (rule
->super
|| list_is_empty(&rule
->list
))
3593 ? rule
->used
+ rule
->idle_timeout
* 1000
3595 expire
= MIN(hard_expire
, idle_expire
);
3599 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
3600 uninstall_idle_flow(p
, rule
);
3601 } else if (!rule
->cr
.wc
.wildcards
) {
3602 active_timeout(p
, rule
);
3608 COVERAGE_INC(ofproto_expired
);
3610 /* Update stats. This code will be a no-op if the rule expired
3611 * due to an idle timeout. */
3612 if (rule
->cr
.wc
.wildcards
) {
3613 struct rule
*subrule
, *next
;
3614 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
3615 rule_remove(p
, subrule
);
3618 rule_uninstall(p
, rule
);
3621 if (!rule_is_hidden(rule
)) {
3622 send_flow_removed(p
, rule
, now
,
3624 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
3626 rule_remove(p
, rule
);
3630 active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
3632 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
3633 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
3634 struct ofexpired expired
;
3635 struct odp_flow odp_flow
;
3637 /* Get updated flow stats. */
3638 memset(&odp_flow
, 0, sizeof odp_flow
);
3639 if (rule
->installed
) {
3640 odp_flow
.key
= rule
->cr
.flow
;
3641 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
3642 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
3644 if (odp_flow
.stats
.n_packets
) {
3645 update_time(ofproto
, rule
, &odp_flow
.stats
);
3646 netflow_flow_update_flags(&rule
->nf_flow
, odp_flow
.stats
.ip_tos
,
3647 odp_flow
.stats
.tcp_flags
);
3651 expired
.flow
= rule
->cr
.flow
;
3652 expired
.packet_count
= rule
->packet_count
+
3653 odp_flow
.stats
.n_packets
;
3654 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
3655 expired
.used
= rule
->used
;
3657 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
3659 /* Schedule us to send the accumulated records once we have
3660 * collected all of them. */
3661 poll_immediate_wake();
3666 update_used(struct ofproto
*p
)
3668 struct odp_flow
*flows
;
3673 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
3678 for (i
= 0; i
< n_flows
; i
++) {
3679 struct odp_flow
*f
= &flows
[i
];
3682 rule
= rule_from_cls_rule(
3683 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
3684 if (!rule
|| !rule
->installed
) {
3685 COVERAGE_INC(ofproto_unexpected_rule
);
3686 dpif_flow_del(p
->dpif
, f
);
3690 update_time(p
, rule
, &f
->stats
);
3691 rule_account(p
, rule
, f
->stats
.n_bytes
);
3697 do_send_packet_in(struct ofconn
*ofconn
, uint32_t buffer_id
,
3698 const struct ofpbuf
*packet
, int send_len
)
3700 struct odp_msg
*msg
= packet
->data
;
3701 struct ofpbuf payload
;
3705 /* Extract packet payload from 'msg'. */
3706 payload
.data
= msg
+ 1;
3707 payload
.size
= msg
->length
- sizeof *msg
;
3709 /* Construct ofp_packet_in message. */
3710 reason
= msg
->type
== _ODPL_ACTION_NR
? OFPR_ACTION
: OFPR_NO_MATCH
;
3711 opi
= make_packet_in(buffer_id
, odp_port_to_ofp_port(msg
->port
), reason
,
3712 &payload
, send_len
);
3715 rconn_send_with_limit(ofconn
->rconn
, opi
, ofconn
->packet_in_counter
, 100);
3719 send_packet_in_action(struct ofpbuf
*packet
, void *p_
)
3721 struct ofproto
*p
= p_
;
3722 struct ofconn
*ofconn
;
3723 struct odp_msg
*msg
;
3726 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3727 if (ofconn
== p
->controller
|| ofconn
->miss_send_len
) {
3728 do_send_packet_in(ofconn
, UINT32_MAX
, packet
, msg
->arg
);
3731 ofpbuf_delete(packet
);
3735 send_packet_in_miss(struct ofpbuf
*packet
, void *p_
)
3737 struct ofproto
*p
= p_
;
3738 bool in_fail_open
= p
->fail_open
&& fail_open_is_active(p
->fail_open
);
3739 struct ofconn
*ofconn
;
3740 struct ofpbuf payload
;
3741 struct odp_msg
*msg
;
3744 payload
.data
= msg
+ 1;
3745 payload
.size
= msg
->length
- sizeof *msg
;
3746 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3747 if (ofconn
->miss_send_len
) {
3748 struct pktbuf
*pb
= ofconn
->pktbuf
;
3749 uint32_t buffer_id
= (in_fail_open
3751 : pktbuf_save(pb
, &payload
, msg
->port
));
3752 int send_len
= (buffer_id
!= UINT32_MAX
? ofconn
->miss_send_len
3754 do_send_packet_in(ofconn
, buffer_id
, packet
, send_len
);
3757 ofpbuf_delete(packet
);
3761 pick_datapath_id(const struct ofproto
*ofproto
)
3763 const struct ofport
*port
;
3765 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
3767 uint8_t ea
[ETH_ADDR_LEN
];
3770 error
= netdev_get_etheraddr(port
->netdev
, ea
);
3772 return eth_addr_to_uint64(ea
);
3774 VLOG_WARN("could not get MAC address for %s (%s)",
3775 netdev_get_name(port
->netdev
), strerror(error
));
3777 return ofproto
->fallback_dpid
;
3781 pick_fallback_dpid(void)
3783 uint8_t ea
[ETH_ADDR_LEN
];
3784 eth_addr_nicira_random(ea
);
3785 return eth_addr_to_uint64(ea
);
3789 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
3790 struct odp_actions
*actions
, tag_type
*tags
,
3791 uint16_t *nf_output_iface
, void *ofproto_
)
3793 struct ofproto
*ofproto
= ofproto_
;
3796 /* Drop frames for reserved multicast addresses. */
3797 if (eth_addr_is_reserved(flow
->dl_dst
)) {
3801 /* Learn source MAC (but don't try to learn from revalidation). */
3802 if (packet
!= NULL
) {
3803 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
3806 /* The log messages here could actually be useful in debugging,
3807 * so keep the rate limit relatively high. */
3808 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
3809 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
3810 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
3811 ofproto_revalidate(ofproto
, rev_tag
);
3815 /* Determine output port. */
3816 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
);
3818 add_output_group_action(actions
, DP_GROUP_FLOOD
, nf_output_iface
);
3819 } else if (out_port
!= flow
->in_port
) {
3820 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
3821 *nf_output_iface
= out_port
;
3829 static const struct ofhooks default_ofhooks
= {
3831 default_normal_ofhook_cb
,