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 * A subrule has no actions (it uses the super-rule's actions). */
114 union ofp_action
*actions
;
118 * A super-rule with wildcard fields never has ODP actions (since the
119 * datapath only supports exact-match flows). */
120 bool installed
; /* Installed in datapath? */
121 bool may_install
; /* True ordinarily; false if actions must
122 * be reassessed for every packet. */
124 union odp_action
*odp_actions
;
128 rule_is_hidden(const struct rule
*rule
)
130 /* Subrules are merely an implementation detail, so hide them from the
132 if (rule
->super
!= NULL
) {
136 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
137 * (e.g. by in-band control) and are intentionally hidden from the
139 if (rule
->cr
.priority
> UINT16_MAX
) {
146 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
147 const union ofp_action
*, size_t n_actions
,
148 uint16_t idle_timeout
, uint16_t hard_timeout
,
149 uint64_t flow_cookie
, bool send_flow_removed
);
150 static void rule_free(struct rule
*);
151 static void rule_destroy(struct ofproto
*, struct rule
*);
152 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
153 static void rule_insert(struct ofproto
*, struct rule
*,
154 struct ofpbuf
*packet
, uint16_t in_port
);
155 static void rule_remove(struct ofproto
*, struct rule
*);
156 static bool rule_make_actions(struct ofproto
*, struct rule
*,
157 const struct ofpbuf
*packet
);
158 static void rule_install(struct ofproto
*, struct rule
*,
159 struct rule
*displaced_rule
);
160 static void rule_uninstall(struct ofproto
*, struct rule
*);
161 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
162 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
163 long long int now
, uint8_t reason
);
168 struct pktbuf
*pktbuf
;
171 struct rconn_packet_counter
*packet_in_counter
;
173 /* Number of OpenFlow messages queued as replies to OpenFlow requests, and
174 * the maximum number before we stop reading OpenFlow requests. */
175 #define OFCONN_REPLY_MAX 100
176 struct rconn_packet_counter
*reply_counter
;
179 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*);
180 static void ofconn_destroy(struct ofconn
*);
181 static void ofconn_run(struct ofconn
*, struct ofproto
*);
182 static void ofconn_wait(struct ofconn
*);
183 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
184 struct rconn_packet_counter
*counter
);
188 uint64_t datapath_id
; /* Datapath ID. */
189 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
190 char *mfr_desc
; /* Manufacturer. */
191 char *hw_desc
; /* Hardware. */
192 char *sw_desc
; /* Software version. */
193 char *serial_desc
; /* Serial number. */
194 char *dp_desc
; /* Datapath description. */
198 struct netdev_monitor
*netdev_monitor
;
199 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
201 struct shash port_by_name
;
205 struct switch_status
*switch_status
;
206 struct status_category
*ss_cat
;
207 struct in_band
*in_band
;
208 struct discovery
*discovery
;
209 struct fail_open
*fail_open
;
210 struct pinsched
*miss_sched
, *action_sched
;
211 struct netflow
*netflow
;
212 struct ofproto_sflow
*sflow
;
215 struct classifier cls
;
216 bool need_revalidate
;
217 long long int next_expiration
;
218 struct tag_set revalidate_set
;
220 /* OpenFlow connections. */
221 struct list all_conns
;
222 struct ofconn
*controller
;
223 struct pvconn
**listeners
;
225 struct pvconn
**snoops
;
228 /* Hooks for ovs-vswitchd. */
229 const struct ofhooks
*ofhooks
;
232 /* Used by default ofhooks. */
233 struct mac_learning
*ml
;
236 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
238 static const struct ofhooks default_ofhooks
;
240 static uint64_t pick_datapath_id(const struct ofproto
*);
241 static uint64_t pick_fallback_dpid(void);
242 static void send_packet_in_miss(struct ofpbuf
*, void *ofproto
);
243 static void send_packet_in_action(struct ofpbuf
*, void *ofproto
);
244 static void update_used(struct ofproto
*);
245 static void update_stats(struct ofproto
*, struct rule
*,
246 const struct odp_flow_stats
*);
247 static void expire_rule(struct cls_rule
*, void *ofproto
);
248 static void active_timeout(struct ofproto
*ofproto
, struct rule
*rule
);
249 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
250 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
252 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
254 static void handle_openflow(struct ofconn
*, struct ofproto
*,
257 static void refresh_port_groups(struct ofproto
*);
259 static void update_port(struct ofproto
*, const char *devname
);
260 static int init_ports(struct ofproto
*);
261 static void reinit_ports(struct ofproto
*);
264 ofproto_create(const char *datapath
, const char *datapath_type
,
265 const struct ofhooks
*ofhooks
, void *aux
,
266 struct ofproto
**ofprotop
)
268 struct odp_stats stats
;
275 /* Connect to datapath and start listening for messages. */
276 error
= dpif_open(datapath
, datapath_type
, &dpif
);
278 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
281 error
= dpif_get_dp_stats(dpif
, &stats
);
283 VLOG_ERR("failed to obtain stats for datapath %s: %s",
284 datapath
, strerror(error
));
288 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
290 VLOG_ERR("failed to listen on datapath %s: %s",
291 datapath
, strerror(error
));
295 dpif_flow_flush(dpif
);
296 dpif_recv_purge(dpif
);
298 /* Initialize settings. */
299 p
= xzalloc(sizeof *p
);
300 p
->fallback_dpid
= pick_fallback_dpid();
301 p
->datapath_id
= p
->fallback_dpid
;
302 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
303 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
304 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
305 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
306 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
308 /* Initialize datapath. */
310 p
->netdev_monitor
= netdev_monitor_create();
311 port_array_init(&p
->ports
);
312 shash_init(&p
->port_by_name
);
313 p
->max_ports
= stats
.max_ports
;
315 /* Initialize submodules. */
316 p
->switch_status
= switch_status_create(p
);
320 p
->miss_sched
= p
->action_sched
= NULL
;
324 /* Initialize flow table. */
325 classifier_init(&p
->cls
);
326 p
->need_revalidate
= false;
327 p
->next_expiration
= time_msec() + 1000;
328 tag_set_init(&p
->revalidate_set
);
330 /* Initialize OpenFlow connections. */
331 list_init(&p
->all_conns
);
332 p
->controller
= ofconn_create(p
, rconn_create(5, 8));
333 p
->controller
->pktbuf
= pktbuf_create();
334 p
->controller
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
340 /* Initialize hooks. */
342 p
->ofhooks
= ofhooks
;
346 p
->ofhooks
= &default_ofhooks
;
348 p
->ml
= mac_learning_create();
351 /* Register switch status category. */
352 p
->ss_cat
= switch_status_register(p
->switch_status
, "remote",
353 rconn_status_cb
, p
->controller
->rconn
);
355 /* Pick final datapath ID. */
356 p
->datapath_id
= pick_datapath_id(p
);
357 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
364 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
366 uint64_t old_dpid
= p
->datapath_id
;
367 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
368 if (p
->datapath_id
!= old_dpid
) {
369 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
370 rconn_reconnect(p
->controller
->rconn
);
375 ofproto_set_probe_interval(struct ofproto
*p
, int probe_interval
)
377 probe_interval
= probe_interval
? MAX(probe_interval
, 5) : 0;
378 rconn_set_probe_interval(p
->controller
->rconn
, probe_interval
);
380 int trigger_duration
= probe_interval
? probe_interval
* 3 : 15;
381 fail_open_set_trigger_duration(p
->fail_open
, trigger_duration
);
386 ofproto_set_max_backoff(struct ofproto
*p
, int max_backoff
)
388 rconn_set_max_backoff(p
->controller
->rconn
, max_backoff
);
392 ofproto_set_desc(struct ofproto
*p
,
393 const char *mfr_desc
, const char *hw_desc
,
394 const char *sw_desc
, const char *serial_desc
,
397 struct ofp_desc_stats
*ods
;
400 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
401 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
402 sizeof ods
->mfr_desc
);
405 p
->mfr_desc
= xstrdup(mfr_desc
);
408 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
409 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
410 sizeof ods
->hw_desc
);
413 p
->hw_desc
= xstrdup(hw_desc
);
416 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
417 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
418 sizeof ods
->sw_desc
);
421 p
->sw_desc
= xstrdup(sw_desc
);
424 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
425 VLOG_WARN("truncating serial_desc, must be less than %zu "
427 sizeof ods
->serial_num
);
429 free(p
->serial_desc
);
430 p
->serial_desc
= xstrdup(serial_desc
);
433 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
434 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
435 sizeof ods
->dp_desc
);
438 p
->dp_desc
= xstrdup(dp_desc
);
443 ofproto_set_in_band(struct ofproto
*p
, bool in_band
)
445 if (in_band
!= (p
->in_band
!= NULL
)) {
447 return in_band_create(p
, p
->dpif
, p
->switch_status
,
448 p
->controller
->rconn
, &p
->in_band
);
450 ofproto_set_discovery(p
, false, NULL
, true);
451 in_band_destroy(p
->in_band
);
454 rconn_reconnect(p
->controller
->rconn
);
460 ofproto_set_discovery(struct ofproto
*p
, bool discovery
,
461 const char *re
, bool update_resolv_conf
)
463 if (discovery
!= (p
->discovery
!= NULL
)) {
465 int error
= ofproto_set_in_band(p
, true);
469 error
= discovery_create(re
, update_resolv_conf
,
470 p
->dpif
, p
->switch_status
,
476 discovery_destroy(p
->discovery
);
479 rconn_disconnect(p
->controller
->rconn
);
480 } else if (discovery
) {
481 discovery_set_update_resolv_conf(p
->discovery
, update_resolv_conf
);
482 return discovery_set_accept_controller_re(p
->discovery
, re
);
488 ofproto_set_controller(struct ofproto
*ofproto
, const char *controller
)
490 if (ofproto
->discovery
) {
492 } else if (controller
) {
493 if (strcmp(rconn_get_name(ofproto
->controller
->rconn
), controller
)) {
494 return rconn_connect(ofproto
->controller
->rconn
, controller
);
499 rconn_disconnect(ofproto
->controller
->rconn
);
505 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
506 const struct svec
*svec
)
508 struct pvconn
**pvconns
= *pvconnsp
;
509 size_t n_pvconns
= *n_pvconnsp
;
513 for (i
= 0; i
< n_pvconns
; i
++) {
514 pvconn_close(pvconns
[i
]);
518 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
520 for (i
= 0; i
< svec
->n
; i
++) {
521 const char *name
= svec
->names
[i
];
522 struct pvconn
*pvconn
;
525 error
= pvconn_open(name
, &pvconn
);
527 pvconns
[n_pvconns
++] = pvconn
;
529 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
537 *n_pvconnsp
= n_pvconns
;
543 ofproto_set_listeners(struct ofproto
*ofproto
, const struct svec
*listeners
)
545 return set_pvconns(&ofproto
->listeners
, &ofproto
->n_listeners
, listeners
);
549 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
551 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
555 ofproto_set_netflow(struct ofproto
*ofproto
,
556 const struct netflow_options
*nf_options
)
558 if (nf_options
&& nf_options
->collectors
.n
) {
559 if (!ofproto
->netflow
) {
560 ofproto
->netflow
= netflow_create();
562 return netflow_set_options(ofproto
->netflow
, nf_options
);
564 netflow_destroy(ofproto
->netflow
);
565 ofproto
->netflow
= NULL
;
571 ofproto_set_sflow(struct ofproto
*ofproto
,
572 const struct ofproto_sflow_options
*oso
)
574 struct ofproto_sflow
*os
= ofproto
->sflow
;
577 struct ofport
*ofport
;
578 unsigned int odp_port
;
580 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
581 refresh_port_groups(ofproto
);
582 PORT_ARRAY_FOR_EACH (ofport
, &ofproto
->ports
, odp_port
) {
583 ofproto_sflow_add_port(os
, odp_port
,
584 netdev_get_name(ofport
->netdev
));
587 ofproto_sflow_set_options(os
, oso
);
589 ofproto_sflow_destroy(os
);
590 ofproto
->sflow
= NULL
;
595 ofproto_set_failure(struct ofproto
*ofproto
, bool fail_open
)
598 struct rconn
*rconn
= ofproto
->controller
->rconn
;
599 int trigger_duration
= rconn_get_probe_interval(rconn
) * 3;
600 if (!ofproto
->fail_open
) {
601 ofproto
->fail_open
= fail_open_create(ofproto
, trigger_duration
,
602 ofproto
->switch_status
,
605 fail_open_set_trigger_duration(ofproto
->fail_open
,
609 fail_open_destroy(ofproto
->fail_open
);
610 ofproto
->fail_open
= NULL
;
615 ofproto_set_rate_limit(struct ofproto
*ofproto
,
616 int rate_limit
, int burst_limit
)
618 if (rate_limit
> 0) {
619 if (!ofproto
->miss_sched
) {
620 ofproto
->miss_sched
= pinsched_create(rate_limit
, burst_limit
,
621 ofproto
->switch_status
);
622 ofproto
->action_sched
= pinsched_create(rate_limit
, burst_limit
,
625 pinsched_set_limits(ofproto
->miss_sched
, rate_limit
, burst_limit
);
626 pinsched_set_limits(ofproto
->action_sched
,
627 rate_limit
, burst_limit
);
630 pinsched_destroy(ofproto
->miss_sched
);
631 ofproto
->miss_sched
= NULL
;
632 pinsched_destroy(ofproto
->action_sched
);
633 ofproto
->action_sched
= NULL
;
638 ofproto_set_stp(struct ofproto
*ofproto OVS_UNUSED
, bool enable_stp
)
642 VLOG_WARN("STP is not yet implemented");
650 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
652 return ofproto
->datapath_id
;
656 ofproto_get_probe_interval(const struct ofproto
*ofproto
)
658 return rconn_get_probe_interval(ofproto
->controller
->rconn
);
662 ofproto_get_max_backoff(const struct ofproto
*ofproto
)
664 return rconn_get_max_backoff(ofproto
->controller
->rconn
);
668 ofproto_get_in_band(const struct ofproto
*ofproto
)
670 return ofproto
->in_band
!= NULL
;
674 ofproto_get_discovery(const struct ofproto
*ofproto
)
676 return ofproto
->discovery
!= NULL
;
680 ofproto_get_controller(const struct ofproto
*ofproto
)
682 return rconn_get_name(ofproto
->controller
->rconn
);
686 ofproto_get_listeners(const struct ofproto
*ofproto
, struct svec
*listeners
)
690 for (i
= 0; i
< ofproto
->n_listeners
; i
++) {
691 svec_add(listeners
, pvconn_get_name(ofproto
->listeners
[i
]));
696 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
700 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
701 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
706 ofproto_destroy(struct ofproto
*p
)
708 struct ofconn
*ofconn
, *next_ofconn
;
709 struct ofport
*ofport
;
710 unsigned int port_no
;
717 /* Destroy fail-open early, because it touches the classifier. */
718 ofproto_set_failure(p
, false);
720 ofproto_flush_flows(p
);
721 classifier_destroy(&p
->cls
);
723 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
725 ofconn_destroy(ofconn
);
729 netdev_monitor_destroy(p
->netdev_monitor
);
730 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
733 shash_destroy(&p
->port_by_name
);
735 switch_status_destroy(p
->switch_status
);
736 in_band_destroy(p
->in_band
);
737 discovery_destroy(p
->discovery
);
738 pinsched_destroy(p
->miss_sched
);
739 pinsched_destroy(p
->action_sched
);
740 netflow_destroy(p
->netflow
);
741 ofproto_sflow_destroy(p
->sflow
);
743 switch_status_unregister(p
->ss_cat
);
745 for (i
= 0; i
< p
->n_listeners
; i
++) {
746 pvconn_close(p
->listeners
[i
]);
750 for (i
= 0; i
< p
->n_snoops
; i
++) {
751 pvconn_close(p
->snoops
[i
]);
755 mac_learning_destroy(p
->ml
);
760 free(p
->serial_desc
);
767 ofproto_run(struct ofproto
*p
)
769 int error
= ofproto_run1(p
);
771 error
= ofproto_run2(p
, false);
777 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
779 if (error
== ENOBUFS
) {
780 reinit_ports(ofproto
);
782 update_port(ofproto
, devname
);
788 ofproto_run1(struct ofproto
*p
)
790 struct ofconn
*ofconn
, *next_ofconn
;
795 if (shash_is_empty(&p
->port_by_name
)) {
799 for (i
= 0; i
< 50; i
++) {
803 error
= dpif_recv(p
->dpif
, &buf
);
805 if (error
== ENODEV
) {
806 /* Someone destroyed the datapath behind our back. The caller
807 * better destroy us and give up, because we're just going to
808 * spin from here on out. */
809 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
810 VLOG_ERR_RL(&rl
, "%s: datapath was destroyed externally",
817 handle_odp_msg(p
, buf
);
820 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
821 process_port_change(p
, error
, devname
);
823 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
824 &devname
)) != EAGAIN
) {
825 process_port_change(p
, error
, devname
);
829 in_band_run(p
->in_band
);
832 char *controller_name
;
833 if (rconn_is_connectivity_questionable(p
->controller
->rconn
)) {
834 discovery_question_connectivity(p
->discovery
);
836 if (discovery_run(p
->discovery
, &controller_name
)) {
837 if (controller_name
) {
838 rconn_connect(p
->controller
->rconn
, controller_name
);
840 rconn_disconnect(p
->controller
->rconn
);
844 pinsched_run(p
->miss_sched
, send_packet_in_miss
, p
);
845 pinsched_run(p
->action_sched
, send_packet_in_action
, p
);
847 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
849 ofconn_run(ofconn
, p
);
852 /* Fail-open maintenance. Do this after processing the ofconns since
853 * fail-open checks the status of the controller rconn. */
855 fail_open_run(p
->fail_open
);
858 for (i
= 0; i
< p
->n_listeners
; i
++) {
862 retval
= pvconn_accept(p
->listeners
[i
], OFP_VERSION
, &vconn
);
864 ofconn_create(p
, rconn_new_from_vconn("passive", vconn
));
865 } else if (retval
!= EAGAIN
) {
866 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
870 for (i
= 0; i
< p
->n_snoops
; i
++) {
874 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
876 rconn_add_monitor(p
->controller
->rconn
, vconn
);
877 } else if (retval
!= EAGAIN
) {
878 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
882 if (time_msec() >= p
->next_expiration
) {
883 COVERAGE_INC(ofproto_expiration
);
884 p
->next_expiration
= time_msec() + 1000;
887 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
889 /* Let the hook know that we're at a stable point: all outstanding data
890 * in existing flows has been accounted to the account_cb. Thus, the
891 * hook can now reasonably do operations that depend on having accurate
892 * flow volume accounting (currently, that's just bond rebalancing). */
893 if (p
->ofhooks
->account_checkpoint_cb
) {
894 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
899 netflow_run(p
->netflow
);
902 ofproto_sflow_run(p
->sflow
);
908 struct revalidate_cbdata
{
909 struct ofproto
*ofproto
;
910 bool revalidate_all
; /* Revalidate all exact-match rules? */
911 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
912 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
916 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
918 if (p
->need_revalidate
|| revalidate_all
919 || !tag_set_is_empty(&p
->revalidate_set
)) {
920 struct revalidate_cbdata cbdata
;
922 cbdata
.revalidate_all
= revalidate_all
;
923 cbdata
.revalidate_subrules
= p
->need_revalidate
;
924 cbdata
.revalidate_set
= p
->revalidate_set
;
925 tag_set_init(&p
->revalidate_set
);
926 COVERAGE_INC(ofproto_revalidate
);
927 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
928 p
->need_revalidate
= false;
935 ofproto_wait(struct ofproto
*p
)
937 struct ofconn
*ofconn
;
940 dpif_recv_wait(p
->dpif
);
941 dpif_port_poll_wait(p
->dpif
);
942 netdev_monitor_poll_wait(p
->netdev_monitor
);
943 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
947 in_band_wait(p
->in_band
);
950 discovery_wait(p
->discovery
);
953 fail_open_wait(p
->fail_open
);
955 pinsched_wait(p
->miss_sched
);
956 pinsched_wait(p
->action_sched
);
958 ofproto_sflow_wait(p
->sflow
);
960 if (!tag_set_is_empty(&p
->revalidate_set
)) {
961 poll_immediate_wake();
963 if (p
->need_revalidate
) {
964 /* Shouldn't happen, but if it does just go around again. */
965 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
966 poll_immediate_wake();
967 } else if (p
->next_expiration
!= LLONG_MAX
) {
968 poll_timer_wait(p
->next_expiration
- time_msec());
970 for (i
= 0; i
< p
->n_listeners
; i
++) {
971 pvconn_wait(p
->listeners
[i
]);
973 for (i
= 0; i
< p
->n_snoops
; i
++) {
974 pvconn_wait(p
->snoops
[i
]);
979 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
981 tag_set_add(&ofproto
->revalidate_set
, tag
);
985 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
987 return &ofproto
->revalidate_set
;
991 ofproto_is_alive(const struct ofproto
*p
)
993 return p
->discovery
|| rconn_is_alive(p
->controller
->rconn
);
997 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
998 const union ofp_action
*actions
, size_t n_actions
,
999 const struct ofpbuf
*packet
)
1001 struct odp_actions odp_actions
;
1004 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1010 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1012 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
1013 odp_actions
.n_actions
, packet
);
1018 ofproto_add_flow(struct ofproto
*p
,
1019 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
1020 const union ofp_action
*actions
, size_t n_actions
,
1024 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1025 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1027 cls_rule_from_flow(&rule
->cr
, flow
, wildcards
, priority
);
1028 rule_insert(p
, rule
, NULL
, 0);
1032 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1033 uint32_t wildcards
, unsigned int priority
)
1037 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1041 rule_remove(ofproto
, rule
);
1046 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1048 struct rule
*rule
= rule_from_cls_rule(rule_
);
1049 struct ofproto
*ofproto
= ofproto_
;
1051 /* Mark the flow as not installed, even though it might really be
1052 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1053 * There is no point in uninstalling it individually since we are about to
1054 * blow away all the flows with dpif_flow_flush(). */
1055 rule
->installed
= false;
1057 rule_remove(ofproto
, rule
);
1061 ofproto_flush_flows(struct ofproto
*ofproto
)
1063 COVERAGE_INC(ofproto_flush
);
1064 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1065 dpif_flow_flush(ofproto
->dpif
);
1066 if (ofproto
->in_band
) {
1067 in_band_flushed(ofproto
->in_band
);
1069 if (ofproto
->fail_open
) {
1070 fail_open_flushed(ofproto
->fail_open
);
1075 reinit_ports(struct ofproto
*p
)
1077 struct svec devnames
;
1078 struct ofport
*ofport
;
1079 unsigned int port_no
;
1080 struct odp_port
*odp_ports
;
1084 svec_init(&devnames
);
1085 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1086 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1088 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1089 for (i
= 0; i
< n_odp_ports
; i
++) {
1090 svec_add (&devnames
, odp_ports
[i
].devname
);
1094 svec_sort_unique(&devnames
);
1095 for (i
= 0; i
< devnames
.n
; i
++) {
1096 update_port(p
, devnames
.names
[i
]);
1098 svec_destroy(&devnames
);
1102 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1106 struct ofport
*port
;
1107 unsigned int port_no
;
1109 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1111 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1113 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1114 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1115 ports
[n_ports
++] = port_no
;
1118 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1125 refresh_port_groups(struct ofproto
*p
)
1127 size_t n_flood
= refresh_port_group(p
, DP_GROUP_FLOOD
);
1128 size_t n_all
= refresh_port_group(p
, DP_GROUP_ALL
);
1130 ofproto_sflow_set_group_sizes(p
->sflow
, n_flood
, n_all
);
1134 static struct ofport
*
1135 make_ofport(const struct odp_port
*odp_port
)
1137 struct netdev_options netdev_options
;
1138 enum netdev_flags flags
;
1139 struct ofport
*ofport
;
1140 struct netdev
*netdev
;
1144 memset(&netdev_options
, 0, sizeof netdev_options
);
1145 netdev_options
.name
= odp_port
->devname
;
1146 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1147 netdev_options
.may_open
= true;
1149 error
= netdev_open(&netdev_options
, &netdev
);
1151 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1152 "cannot be opened (%s)",
1153 odp_port
->devname
, odp_port
->port
,
1154 odp_port
->devname
, strerror(error
));
1158 ofport
= xmalloc(sizeof *ofport
);
1159 ofport
->netdev
= netdev
;
1160 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1161 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1162 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1163 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1164 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1166 netdev_get_flags(netdev
, &flags
);
1167 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1169 netdev_get_carrier(netdev
, &carrier
);
1170 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1172 netdev_get_features(netdev
,
1173 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1174 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1179 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1181 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1182 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1185 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1186 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1195 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1197 const struct ofp_phy_port
*a
= &a_
->opp
;
1198 const struct ofp_phy_port
*b
= &b_
->opp
;
1200 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1201 return (a
->port_no
== b
->port_no
1202 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1203 && !strcmp((char *) a
->name
, (char *) b
->name
)
1204 && a
->state
== b
->state
1205 && a
->config
== b
->config
1206 && a
->curr
== b
->curr
1207 && a
->advertised
== b
->advertised
1208 && a
->supported
== b
->supported
1209 && a
->peer
== b
->peer
);
1213 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1216 /* XXX Should limit the number of queued port status change messages. */
1217 struct ofconn
*ofconn
;
1218 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1219 struct ofp_port_status
*ops
;
1222 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1223 ops
->reason
= reason
;
1224 ops
->desc
= ofport
->opp
;
1225 hton_ofp_phy_port(&ops
->desc
);
1226 queue_tx(b
, ofconn
, NULL
);
1228 if (p
->ofhooks
->port_changed_cb
) {
1229 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1234 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1236 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1237 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1239 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1240 port_array_set(&p
->ports
, odp_port
, ofport
);
1241 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1243 ofproto_sflow_add_port(p
->sflow
, odp_port
, netdev_name
);
1248 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1250 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1252 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1253 port_array_set(&p
->ports
, odp_port
, NULL
);
1254 shash_delete(&p
->port_by_name
,
1255 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1257 ofproto_sflow_del_port(p
->sflow
, odp_port
);
1262 ofport_free(struct ofport
*ofport
)
1265 netdev_close(ofport
->netdev
);
1271 update_port(struct ofproto
*p
, const char *devname
)
1273 struct odp_port odp_port
;
1274 struct ofport
*old_ofport
;
1275 struct ofport
*new_ofport
;
1278 COVERAGE_INC(ofproto_update_port
);
1280 /* Query the datapath for port information. */
1281 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1283 /* Find the old ofport. */
1284 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1287 /* There's no port named 'devname' but there might be a port with
1288 * the same port number. This could happen if a port is deleted
1289 * and then a new one added in its place very quickly, or if a port
1290 * is renamed. In the former case we want to send an OFPPR_DELETE
1291 * and an OFPPR_ADD, and in the latter case we want to send a
1292 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1293 * the old port's ifindex against the new port, or perhaps less
1294 * reliably but more portably by comparing the old port's MAC
1295 * against the new port's MAC. However, this code isn't that smart
1296 * and always sends an OFPPR_MODIFY (XXX). */
1297 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1299 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1300 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1301 "%s", strerror(error
));
1305 /* Create a new ofport. */
1306 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1308 /* Eliminate a few pathological cases. */
1309 if (!old_ofport
&& !new_ofport
) {
1311 } else if (old_ofport
&& new_ofport
) {
1312 /* Most of the 'config' bits are OpenFlow soft state, but
1313 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1314 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1315 * leaves the other bits 0.) */
1316 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1318 if (ofport_equal(old_ofport
, new_ofport
)) {
1319 /* False alarm--no change. */
1320 ofport_free(new_ofport
);
1325 /* Now deal with the normal cases. */
1327 ofport_remove(p
, old_ofport
);
1330 ofport_install(p
, new_ofport
);
1332 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1333 (!old_ofport
? OFPPR_ADD
1334 : !new_ofport
? OFPPR_DELETE
1336 ofport_free(old_ofport
);
1338 /* Update port groups. */
1339 refresh_port_groups(p
);
1343 init_ports(struct ofproto
*p
)
1345 struct odp_port
*ports
;
1350 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1355 for (i
= 0; i
< n_ports
; i
++) {
1356 const struct odp_port
*odp_port
= &ports
[i
];
1357 if (!ofport_conflicts(p
, odp_port
)) {
1358 struct ofport
*ofport
= make_ofport(odp_port
);
1360 ofport_install(p
, ofport
);
1365 refresh_port_groups(p
);
1369 static struct ofconn
*
1370 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
)
1372 struct ofconn
*ofconn
= xmalloc(sizeof *ofconn
);
1373 list_push_back(&p
->all_conns
, &ofconn
->node
);
1374 ofconn
->rconn
= rconn
;
1375 ofconn
->pktbuf
= NULL
;
1376 ofconn
->miss_send_len
= 0;
1377 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1378 ofconn
->reply_counter
= rconn_packet_counter_create ();
1383 ofconn_destroy(struct ofconn
*ofconn
)
1385 list_remove(&ofconn
->node
);
1386 rconn_destroy(ofconn
->rconn
);
1387 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1388 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1389 pktbuf_destroy(ofconn
->pktbuf
);
1394 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1398 rconn_run(ofconn
->rconn
);
1400 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1401 /* Limit the number of iterations to prevent other tasks from
1403 for (iteration
= 0; iteration
< 50; iteration
++) {
1404 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1409 fail_open_maybe_recover(p
->fail_open
);
1411 handle_openflow(ofconn
, p
, of_msg
);
1412 ofpbuf_delete(of_msg
);
1416 if (ofconn
!= p
->controller
&& !rconn_is_alive(ofconn
->rconn
)) {
1417 ofconn_destroy(ofconn
);
1422 ofconn_wait(struct ofconn
*ofconn
)
1424 rconn_run_wait(ofconn
->rconn
);
1425 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1426 rconn_recv_wait(ofconn
->rconn
);
1428 COVERAGE_INC(ofproto_ofconn_stuck
);
1432 /* Caller is responsible for initializing the 'cr' member of the returned
1434 static struct rule
*
1435 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1436 const union ofp_action
*actions
, size_t n_actions
,
1437 uint16_t idle_timeout
, uint16_t hard_timeout
,
1438 uint64_t flow_cookie
, bool send_flow_removed
)
1440 struct rule
*rule
= xzalloc(sizeof *rule
);
1441 rule
->idle_timeout
= idle_timeout
;
1442 rule
->hard_timeout
= hard_timeout
;
1443 rule
->flow_cookie
= flow_cookie
;
1444 rule
->used
= rule
->created
= time_msec();
1445 rule
->send_flow_removed
= send_flow_removed
;
1446 rule
->super
= super
;
1448 list_push_back(&super
->list
, &rule
->list
);
1450 list_init(&rule
->list
);
1452 rule
->n_actions
= n_actions
;
1453 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1454 netflow_flow_clear(&rule
->nf_flow
);
1455 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1460 static struct rule
*
1461 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1463 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1467 rule_free(struct rule
*rule
)
1469 free(rule
->actions
);
1470 free(rule
->odp_actions
);
1474 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1475 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1476 * through all of its subrules and revalidates them, destroying any that no
1477 * longer has a super-rule (which is probably all of them).
1479 * Before calling this function, the caller must make have removed 'rule' from
1480 * the classifier. If 'rule' is an exact-match rule, the caller is also
1481 * responsible for ensuring that it has been uninstalled from the datapath. */
1483 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1486 struct rule
*subrule
, *next
;
1487 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1488 revalidate_rule(ofproto
, subrule
);
1491 list_remove(&rule
->list
);
1497 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1499 const union ofp_action
*oa
;
1500 struct actions_iterator i
;
1502 if (out_port
== htons(OFPP_NONE
)) {
1505 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1506 oa
= actions_next(&i
)) {
1507 if (oa
->type
== htons(OFPAT_OUTPUT
) && oa
->output
.port
== out_port
) {
1514 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1515 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1517 * The flow that 'packet' actually contains does not need to actually match
1518 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1519 * the packet and byte counters for 'rule' will be credited for the packet sent
1520 * out whether or not the packet actually matches 'rule'.
1522 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1523 * the caller must already have accurately composed ODP actions for it given
1524 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1525 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1526 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1527 * actions and apply them to 'packet'. */
1529 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1530 struct ofpbuf
*packet
, const flow_t
*flow
)
1532 const union odp_action
*actions
;
1534 struct odp_actions a
;
1536 /* Grab or compose the ODP actions.
1538 * The special case for an exact-match 'rule' where 'flow' is not the
1539 * rule's flow is important to avoid, e.g., sending a packet out its input
1540 * port simply because the ODP actions were composed for the wrong
1542 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1543 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1544 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1545 packet
, &a
, NULL
, 0, NULL
)) {
1548 actions
= a
.actions
;
1549 n_actions
= a
.n_actions
;
1551 actions
= rule
->odp_actions
;
1552 n_actions
= rule
->n_odp_actions
;
1555 /* Execute the ODP actions. */
1556 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1557 actions
, n_actions
, packet
)) {
1558 struct odp_flow_stats stats
;
1559 flow_extract_stats(flow
, packet
, &stats
);
1560 update_stats(ofproto
, rule
, &stats
);
1561 rule
->used
= time_msec();
1562 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
1567 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
1570 struct rule
*displaced_rule
;
1572 /* Insert the rule in the classifier. */
1573 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
1574 if (!rule
->cr
.wc
.wildcards
) {
1575 rule_make_actions(p
, rule
, packet
);
1578 /* Send the packet and credit it to the rule. */
1581 flow_extract(packet
, in_port
, &flow
);
1582 rule_execute(p
, rule
, packet
, &flow
);
1585 /* Install the rule in the datapath only after sending the packet, to
1586 * avoid packet reordering. */
1587 if (rule
->cr
.wc
.wildcards
) {
1588 COVERAGE_INC(ofproto_add_wc_flow
);
1589 p
->need_revalidate
= true;
1591 rule_install(p
, rule
, displaced_rule
);
1594 /* Free the rule that was displaced, if any. */
1595 if (displaced_rule
) {
1596 rule_destroy(p
, displaced_rule
);
1600 static struct rule
*
1601 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
1604 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
1605 rule
->idle_timeout
, rule
->hard_timeout
,
1607 COVERAGE_INC(ofproto_subrule_create
);
1608 cls_rule_from_flow(&subrule
->cr
, flow
, 0,
1609 (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
1610 : rule
->cr
.priority
));
1611 classifier_insert_exact(&ofproto
->cls
, &subrule
->cr
);
1617 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
1619 if (rule
->cr
.wc
.wildcards
) {
1620 COVERAGE_INC(ofproto_del_wc_flow
);
1621 ofproto
->need_revalidate
= true;
1623 rule_uninstall(ofproto
, rule
);
1625 classifier_remove(&ofproto
->cls
, &rule
->cr
);
1626 rule_destroy(ofproto
, rule
);
1629 /* Returns true if the actions changed, false otherwise. */
1631 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
1632 const struct ofpbuf
*packet
)
1634 const struct rule
*super
;
1635 struct odp_actions a
;
1638 assert(!rule
->cr
.wc
.wildcards
);
1640 super
= rule
->super
? rule
->super
: rule
;
1642 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
1643 packet
, &a
, &rule
->tags
, &rule
->may_install
,
1644 &rule
->nf_flow
.output_iface
);
1646 actions_len
= a
.n_actions
* sizeof *a
.actions
;
1647 if (rule
->n_odp_actions
!= a
.n_actions
1648 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
1649 COVERAGE_INC(ofproto_odp_unchanged
);
1650 free(rule
->odp_actions
);
1651 rule
->n_odp_actions
= a
.n_actions
;
1652 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
1660 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
1661 struct odp_flow_put
*put
)
1663 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
1664 put
->flow
.key
= rule
->cr
.flow
;
1665 put
->flow
.actions
= rule
->odp_actions
;
1666 put
->flow
.n_actions
= rule
->n_odp_actions
;
1668 return dpif_flow_put(ofproto
->dpif
, put
);
1672 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
1674 assert(!rule
->cr
.wc
.wildcards
);
1676 if (rule
->may_install
) {
1677 struct odp_flow_put put
;
1678 if (!do_put_flow(p
, rule
,
1679 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
1681 rule
->installed
= true;
1682 if (displaced_rule
) {
1683 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
1684 rule_post_uninstall(p
, displaced_rule
);
1687 } else if (displaced_rule
) {
1688 rule_uninstall(p
, displaced_rule
);
1693 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
1695 if (rule
->installed
) {
1696 struct odp_flow_put put
;
1697 COVERAGE_INC(ofproto_dp_missed
);
1698 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1700 rule_install(ofproto
, rule
, NULL
);
1705 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
1707 bool actions_changed
;
1708 uint16_t new_out_iface
, old_out_iface
;
1710 old_out_iface
= rule
->nf_flow
.output_iface
;
1711 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
1713 if (rule
->may_install
) {
1714 if (rule
->installed
) {
1715 if (actions_changed
) {
1716 struct odp_flow_put put
;
1717 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
1718 | ODPPF_ZERO_STATS
, &put
);
1719 update_stats(ofproto
, rule
, &put
.flow
.stats
);
1721 /* Temporarily set the old output iface so that NetFlow
1722 * messages have the correct output interface for the old
1724 new_out_iface
= rule
->nf_flow
.output_iface
;
1725 rule
->nf_flow
.output_iface
= old_out_iface
;
1726 rule_post_uninstall(ofproto
, rule
);
1727 rule
->nf_flow
.output_iface
= new_out_iface
;
1730 rule_install(ofproto
, rule
, NULL
);
1733 rule_uninstall(ofproto
, rule
);
1738 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
1740 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
1742 if (ofproto
->ofhooks
->account_flow_cb
1743 && total_bytes
> rule
->accounted_bytes
)
1745 ofproto
->ofhooks
->account_flow_cb(
1746 &rule
->cr
.flow
, rule
->odp_actions
, rule
->n_odp_actions
,
1747 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
1748 rule
->accounted_bytes
= total_bytes
;
1753 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
1755 assert(!rule
->cr
.wc
.wildcards
);
1756 if (rule
->installed
) {
1757 struct odp_flow odp_flow
;
1759 odp_flow
.key
= rule
->cr
.flow
;
1760 odp_flow
.actions
= NULL
;
1761 odp_flow
.n_actions
= 0;
1762 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
1763 update_stats(p
, rule
, &odp_flow
.stats
);
1765 rule
->installed
= false;
1767 rule_post_uninstall(p
, rule
);
1772 is_controller_rule(struct rule
*rule
)
1774 /* If the only action is send to the controller then don't report
1775 * NetFlow expiration messages since it is just part of the control
1776 * logic for the network and not real traffic. */
1778 if (rule
&& rule
->super
) {
1779 struct rule
*super
= rule
->super
;
1781 return super
->n_actions
== 1 &&
1782 super
->actions
[0].type
== htons(OFPAT_OUTPUT
) &&
1783 super
->actions
[0].output
.port
== htons(OFPP_CONTROLLER
);
1790 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
1792 struct rule
*super
= rule
->super
;
1794 rule_account(ofproto
, rule
, 0);
1796 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
1797 struct ofexpired expired
;
1798 expired
.flow
= rule
->cr
.flow
;
1799 expired
.packet_count
= rule
->packet_count
;
1800 expired
.byte_count
= rule
->byte_count
;
1801 expired
.used
= rule
->used
;
1802 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
1805 super
->packet_count
+= rule
->packet_count
;
1806 super
->byte_count
+= rule
->byte_count
;
1808 /* Reset counters to prevent double counting if the rule ever gets
1810 rule
->packet_count
= 0;
1811 rule
->byte_count
= 0;
1812 rule
->accounted_bytes
= 0;
1814 netflow_flow_clear(&rule
->nf_flow
);
1819 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
1820 struct rconn_packet_counter
*counter
)
1822 update_openflow_length(msg
);
1823 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
1829 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1830 int error
, const void *data
, size_t len
)
1833 struct ofp_error_msg
*oem
;
1835 if (!(error
>> 16)) {
1836 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
1841 COVERAGE_INC(ofproto_error
);
1842 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
1843 oh
? oh
->xid
: 0, &buf
);
1844 oem
->type
= htons((unsigned int) error
>> 16);
1845 oem
->code
= htons(error
& 0xffff);
1846 memcpy(oem
->data
, data
, len
);
1847 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1851 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
1854 size_t oh_length
= ntohs(oh
->length
);
1855 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
1859 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
1861 opp
->port_no
= htons(opp
->port_no
);
1862 opp
->config
= htonl(opp
->config
);
1863 opp
->state
= htonl(opp
->state
);
1864 opp
->curr
= htonl(opp
->curr
);
1865 opp
->advertised
= htonl(opp
->advertised
);
1866 opp
->supported
= htonl(opp
->supported
);
1867 opp
->peer
= htonl(opp
->peer
);
1871 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
1873 struct ofp_header
*rq
= oh
;
1874 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
1879 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1880 struct ofp_header
*oh
)
1882 struct ofp_switch_features
*osf
;
1884 unsigned int port_no
;
1885 struct ofport
*port
;
1887 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
1888 osf
->datapath_id
= htonll(p
->datapath_id
);
1889 osf
->n_buffers
= htonl(pktbuf_capacity());
1891 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
1892 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
1893 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
1894 (1u << OFPAT_SET_VLAN_VID
) |
1895 (1u << OFPAT_SET_VLAN_PCP
) |
1896 (1u << OFPAT_STRIP_VLAN
) |
1897 (1u << OFPAT_SET_DL_SRC
) |
1898 (1u << OFPAT_SET_DL_DST
) |
1899 (1u << OFPAT_SET_NW_SRC
) |
1900 (1u << OFPAT_SET_NW_DST
) |
1901 (1u << OFPAT_SET_NW_TOS
) |
1902 (1u << OFPAT_SET_TP_SRC
) |
1903 (1u << OFPAT_SET_TP_DST
));
1905 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1906 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
1909 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1914 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
1915 struct ofp_header
*oh
)
1918 struct ofp_switch_config
*osc
;
1922 /* Figure out flags. */
1923 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
1924 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
1927 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
1928 osc
->flags
= htons(flags
);
1929 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
1930 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
1936 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
1937 struct ofp_switch_config
*osc
)
1942 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
1946 flags
= ntohs(osc
->flags
);
1948 if (ofconn
== p
->controller
) {
1949 switch (flags
& OFPC_FRAG_MASK
) {
1950 case OFPC_FRAG_NORMAL
:
1951 dpif_set_drop_frags(p
->dpif
, false);
1953 case OFPC_FRAG_DROP
:
1954 dpif_set_drop_frags(p
->dpif
, true);
1957 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
1963 if ((ntohs(osc
->miss_send_len
) != 0) != (ofconn
->miss_send_len
!= 0)) {
1964 if (ntohs(osc
->miss_send_len
) != 0) {
1965 ofconn
->pktbuf
= pktbuf_create();
1967 pktbuf_destroy(ofconn
->pktbuf
);
1971 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
1977 add_output_group_action(struct odp_actions
*actions
, uint16_t group
,
1978 uint16_t *nf_output_iface
)
1980 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
1982 if (group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
) {
1983 *nf_output_iface
= NF_OUT_FLOOD
;
1988 add_controller_action(struct odp_actions
*actions
,
1989 const struct ofp_action_output
*oao
)
1991 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
1992 a
->controller
.arg
= oao
->max_len
? ntohs(oao
->max_len
) : UINT32_MAX
;
1995 struct action_xlate_ctx
{
1997 const flow_t
*flow
; /* Flow to which these actions correspond. */
1998 int recurse
; /* Recursion level, via xlate_table_action. */
1999 struct ofproto
*ofproto
;
2000 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2001 * null pointer if we are revalidating
2002 * without a packet to refer to. */
2005 struct odp_actions
*out
; /* Datapath actions. */
2006 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2007 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2008 * be reassessed for every packet. */
2009 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2012 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2013 struct action_xlate_ctx
*ctx
);
2016 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2018 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
2021 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2022 /* Forwarding disabled on port. */
2027 * We don't have an ofport record for this port, but it doesn't hurt to
2028 * allow forwarding to it anyhow. Maybe such a port will appear later
2029 * and we're pre-populating the flow table.
2033 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2034 ctx
->nf_output_iface
= port
;
2037 static struct rule
*
2038 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
2041 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2043 /* The rule we found might not be valid, since we could be in need of
2044 * revalidation. If it is not valid, don't return it. */
2047 && ofproto
->need_revalidate
2048 && !revalidate_rule(ofproto
, rule
)) {
2049 COVERAGE_INC(ofproto_invalidated
);
2057 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2059 if (!ctx
->recurse
) {
2064 flow
.in_port
= in_port
;
2066 rule
= lookup_valid_rule(ctx
->ofproto
, &flow
);
2073 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2080 xlate_output_action(struct action_xlate_ctx
*ctx
,
2081 const struct ofp_action_output
*oao
)
2084 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2086 ctx
->nf_output_iface
= NF_OUT_DROP
;
2088 switch (ntohs(oao
->port
)) {
2090 add_output_action(ctx
, ctx
->flow
->in_port
);
2093 xlate_table_action(ctx
, ctx
->flow
->in_port
);
2096 if (!ctx
->ofproto
->ofhooks
->normal_cb(ctx
->flow
, ctx
->packet
,
2097 ctx
->out
, ctx
->tags
,
2098 &ctx
->nf_output_iface
,
2099 ctx
->ofproto
->aux
)) {
2100 COVERAGE_INC(ofproto_uninstallable
);
2101 ctx
->may_set_up_flow
= false;
2105 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
,
2106 &ctx
->nf_output_iface
);
2109 add_output_group_action(ctx
->out
, DP_GROUP_ALL
, &ctx
->nf_output_iface
);
2111 case OFPP_CONTROLLER
:
2112 add_controller_action(ctx
->out
, oao
);
2115 add_output_action(ctx
, ODPP_LOCAL
);
2118 odp_port
= ofp_port_to_odp_port(ntohs(oao
->port
));
2119 if (odp_port
!= ctx
->flow
->in_port
) {
2120 add_output_action(ctx
, odp_port
);
2125 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2126 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2127 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2128 ctx
->nf_output_iface
= prev_nf_output_iface
;
2129 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2130 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2131 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2136 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2137 const struct nx_action_header
*nah
)
2139 const struct nx_action_resubmit
*nar
;
2140 int subtype
= ntohs(nah
->subtype
);
2142 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2144 case NXAST_RESUBMIT
:
2145 nar
= (const struct nx_action_resubmit
*) nah
;
2146 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2150 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2156 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2157 struct action_xlate_ctx
*ctx
)
2159 struct actions_iterator iter
;
2160 const union ofp_action
*ia
;
2161 const struct ofport
*port
;
2163 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
->in_port
);
2164 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2165 port
->opp
.config
& (eth_addr_equals(ctx
->flow
->dl_dst
, stp_eth_addr
)
2166 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2167 /* Drop this flow. */
2171 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2172 uint16_t type
= ntohs(ia
->type
);
2173 union odp_action
*oa
;
2177 xlate_output_action(ctx
, &ia
->output
);
2180 case OFPAT_SET_VLAN_VID
:
2181 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2182 oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2185 case OFPAT_SET_VLAN_PCP
:
2186 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2187 oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2190 case OFPAT_STRIP_VLAN
:
2191 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2194 case OFPAT_SET_DL_SRC
:
2195 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2196 memcpy(oa
->dl_addr
.dl_addr
,
2197 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2200 case OFPAT_SET_DL_DST
:
2201 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2202 memcpy(oa
->dl_addr
.dl_addr
,
2203 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2206 case OFPAT_SET_NW_SRC
:
2207 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2208 oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2211 case OFPAT_SET_NW_DST
:
2212 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2213 oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2215 case OFPAT_SET_NW_TOS
:
2216 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2217 oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2220 case OFPAT_SET_TP_SRC
:
2221 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2222 oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2225 case OFPAT_SET_TP_DST
:
2226 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2227 oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2231 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2235 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2242 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2243 const flow_t
*flow
, struct ofproto
*ofproto
,
2244 const struct ofpbuf
*packet
,
2245 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2246 uint16_t *nf_output_iface
)
2248 tag_type no_tags
= 0;
2249 struct action_xlate_ctx ctx
;
2250 COVERAGE_INC(ofproto_ofp2odp
);
2251 odp_actions_init(out
);
2254 ctx
.ofproto
= ofproto
;
2255 ctx
.packet
= packet
;
2257 ctx
.tags
= tags
? tags
: &no_tags
;
2258 ctx
.may_set_up_flow
= true;
2259 ctx
.nf_output_iface
= NF_OUT_DROP
;
2260 do_xlate_actions(in
, n_in
, &ctx
);
2262 /* Check with in-band control to see if we're allowed to set up this
2264 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2265 ctx
.may_set_up_flow
= false;
2268 if (may_set_up_flow
) {
2269 *may_set_up_flow
= ctx
.may_set_up_flow
;
2271 if (nf_output_iface
) {
2272 *nf_output_iface
= ctx
.nf_output_iface
;
2274 if (odp_actions_overflow(out
)) {
2275 odp_actions_init(out
);
2276 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2282 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2283 struct ofp_header
*oh
)
2285 struct ofp_packet_out
*opo
;
2286 struct ofpbuf payload
, *buffer
;
2287 struct odp_actions actions
;
2293 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2297 opo
= (struct ofp_packet_out
*) oh
;
2299 COVERAGE_INC(ofproto_packet_out
);
2300 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2301 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2303 if (error
|| !buffer
) {
2311 flow_extract(&payload
, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2312 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2313 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2318 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2320 ofpbuf_delete(buffer
);
2326 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2327 uint32_t config
, uint32_t mask
)
2329 mask
&= config
^ port
->opp
.config
;
2330 if (mask
& OFPPC_PORT_DOWN
) {
2331 if (config
& OFPPC_PORT_DOWN
) {
2332 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2334 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2337 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2338 if (mask
& REVALIDATE_BITS
) {
2339 COVERAGE_INC(ofproto_costly_flags
);
2340 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2341 p
->need_revalidate
= true;
2343 #undef REVALIDATE_BITS
2344 if (mask
& OFPPC_NO_FLOOD
) {
2345 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2346 refresh_port_groups(p
);
2348 if (mask
& OFPPC_NO_PACKET_IN
) {
2349 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2354 handle_port_mod(struct ofproto
*p
, struct ofp_header
*oh
)
2356 const struct ofp_port_mod
*opm
;
2357 struct ofport
*port
;
2360 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2364 opm
= (struct ofp_port_mod
*) oh
;
2366 port
= port_array_get(&p
->ports
,
2367 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2369 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2370 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2371 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2373 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2374 if (opm
->advertise
) {
2375 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2381 static struct ofpbuf
*
2382 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2384 struct ofp_stats_reply
*osr
;
2387 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2388 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2390 osr
->flags
= htons(0);
2394 static struct ofpbuf
*
2395 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2397 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2401 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2403 struct ofpbuf
*msg
= *msgp
;
2404 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2405 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2406 struct ofp_stats_reply
*reply
= msg
->data
;
2407 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2408 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2409 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2411 return ofpbuf_put_uninit(*msgp
, nbytes
);
2415 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2416 struct ofp_stats_request
*request
)
2418 struct ofp_desc_stats
*ods
;
2421 msg
= start_stats_reply(request
, sizeof *ods
);
2422 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2423 memset(ods
, 0, sizeof *ods
);
2424 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
2425 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
2426 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
2427 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
2428 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
2429 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2435 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2437 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2438 int *n_subrules
= n_subrules_
;
2446 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2447 struct ofp_stats_request
*request
)
2449 struct ofp_table_stats
*ots
;
2451 struct odp_stats dpstats
;
2452 int n_exact
, n_subrules
, n_wild
;
2454 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2456 /* Count rules of various kinds. */
2458 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2459 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2460 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2463 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2464 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2465 memset(ots
, 0, sizeof *ots
);
2466 ots
->table_id
= TABLEID_HASH
;
2467 strcpy(ots
->name
, "hash");
2468 ots
->wildcards
= htonl(0);
2469 ots
->max_entries
= htonl(dpstats
.max_capacity
);
2470 ots
->active_count
= htonl(n_exact
);
2471 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
2473 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
2475 /* Classifier table. */
2476 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2477 memset(ots
, 0, sizeof *ots
);
2478 ots
->table_id
= TABLEID_CLASSIFIER
;
2479 strcpy(ots
->name
, "classifier");
2480 ots
->wildcards
= htonl(OFPFW_ALL
);
2481 ots
->max_entries
= htonl(65536);
2482 ots
->active_count
= htonl(n_wild
);
2483 ots
->lookup_count
= htonll(0); /* XXX */
2484 ots
->matched_count
= htonll(0); /* XXX */
2486 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2491 append_port_stat(struct ofport
*port
, uint16_t port_no
, struct ofconn
*ofconn
,
2494 struct netdev_stats stats
;
2495 struct ofp_port_stats
*ops
;
2497 /* Intentionally ignore return value, since errors will set
2498 * 'stats' to all-1s, which is correct for OpenFlow, and
2499 * netdev_get_stats() will log errors. */
2500 netdev_get_stats(port
->netdev
, &stats
);
2502 ops
= append_stats_reply(sizeof *ops
, ofconn
, &msg
);
2503 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
2504 memset(ops
->pad
, 0, sizeof ops
->pad
);
2505 ops
->rx_packets
= htonll(stats
.rx_packets
);
2506 ops
->tx_packets
= htonll(stats
.tx_packets
);
2507 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
2508 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
2509 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
2510 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
2511 ops
->rx_errors
= htonll(stats
.rx_errors
);
2512 ops
->tx_errors
= htonll(stats
.tx_errors
);
2513 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
2514 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
2515 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
2516 ops
->collisions
= htonll(stats
.collisions
);
2520 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2521 struct ofp_stats_request
*osr
,
2524 struct ofp_port_stats_request
*psr
;
2525 struct ofp_port_stats
*ops
;
2527 struct ofport
*port
;
2528 unsigned int port_no
;
2530 if (arg_size
!= sizeof *psr
) {
2531 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2533 psr
= (struct ofp_port_stats_request
*) osr
->body
;
2535 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
2536 if (psr
->port_no
!= htons(OFPP_NONE
)) {
2537 port
= port_array_get(&p
->ports
,
2538 ofp_port_to_odp_port(ntohs(psr
->port_no
)));
2540 append_port_stat(port
, ntohs(psr
->port_no
), ofconn
, msg
);
2543 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2544 append_port_stat(port
, port_no
, ofconn
, msg
);
2548 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2552 struct flow_stats_cbdata
{
2553 struct ofproto
*ofproto
;
2554 struct ofconn
*ofconn
;
2560 query_stats(struct ofproto
*p
, struct rule
*rule
,
2561 uint64_t *packet_countp
, uint64_t *byte_countp
)
2563 uint64_t packet_count
, byte_count
;
2564 struct rule
*subrule
;
2565 struct odp_flow
*odp_flows
;
2568 packet_count
= rule
->packet_count
;
2569 byte_count
= rule
->byte_count
;
2571 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
2572 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
2573 if (rule
->cr
.wc
.wildcards
) {
2575 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
2576 odp_flows
[i
++].key
= subrule
->cr
.flow
;
2577 packet_count
+= subrule
->packet_count
;
2578 byte_count
+= subrule
->byte_count
;
2581 odp_flows
[0].key
= rule
->cr
.flow
;
2584 packet_count
= rule
->packet_count
;
2585 byte_count
= rule
->byte_count
;
2586 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
2588 for (i
= 0; i
< n_odp_flows
; i
++) {
2589 struct odp_flow
*odp_flow
= &odp_flows
[i
];
2590 packet_count
+= odp_flow
->stats
.n_packets
;
2591 byte_count
+= odp_flow
->stats
.n_bytes
;
2596 *packet_countp
= packet_count
;
2597 *byte_countp
= byte_count
;
2601 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2603 struct rule
*rule
= rule_from_cls_rule(rule_
);
2604 struct flow_stats_cbdata
*cbdata
= cbdata_
;
2605 struct ofp_flow_stats
*ofs
;
2606 uint64_t packet_count
, byte_count
;
2607 size_t act_len
, len
;
2608 long long int tdiff
= time_msec() - rule
->created
;
2609 uint32_t sec
= tdiff
/ 1000;
2610 uint32_t msec
= tdiff
- (sec
* 1000);
2612 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2616 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2617 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
2619 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2621 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
2622 ofs
->length
= htons(len
);
2623 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
2625 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofs
->match
);
2626 ofs
->duration_sec
= htonl(sec
);
2627 ofs
->duration_nsec
= htonl(msec
* 1000000);
2628 ofs
->cookie
= rule
->flow_cookie
;
2629 ofs
->priority
= htons(rule
->cr
.priority
);
2630 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
2631 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
2632 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
2633 ofs
->packet_count
= htonll(packet_count
);
2634 ofs
->byte_count
= htonll(byte_count
);
2635 memcpy(ofs
->actions
, rule
->actions
, act_len
);
2639 table_id_to_include(uint8_t table_id
)
2641 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
2642 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
2643 : table_id
== 0xff ? CLS_INC_ALL
2648 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2649 const struct ofp_stats_request
*osr
,
2652 struct ofp_flow_stats_request
*fsr
;
2653 struct flow_stats_cbdata cbdata
;
2654 struct cls_rule target
;
2656 if (arg_size
!= sizeof *fsr
) {
2657 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2659 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
2661 COVERAGE_INC(ofproto_flows_req
);
2663 cbdata
.ofconn
= ofconn
;
2664 cbdata
.out_port
= fsr
->out_port
;
2665 cbdata
.msg
= start_stats_reply(osr
, 1024);
2666 cls_rule_from_match(&target
, &fsr
->match
, 0);
2667 classifier_for_each_match(&p
->cls
, &target
,
2668 table_id_to_include(fsr
->table_id
),
2669 flow_stats_cb
, &cbdata
);
2670 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
2674 struct flow_stats_ds_cbdata
{
2675 struct ofproto
*ofproto
;
2680 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
2682 struct rule
*rule
= rule_from_cls_rule(rule_
);
2683 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
2684 struct ds
*results
= cbdata
->results
;
2685 struct ofp_match match
;
2686 uint64_t packet_count
, byte_count
;
2687 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2689 /* Don't report on subrules. */
2690 if (rule
->super
!= NULL
) {
2694 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2695 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &match
);
2697 ds_put_format(results
, "duration=%llds, ",
2698 (time_msec() - rule
->created
) / 1000);
2699 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
2700 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
2701 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
2702 ofp_print_match(results
, &match
, true);
2703 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
2704 ds_put_cstr(results
, "\n");
2707 /* Adds a pretty-printed description of all flows to 'results', including
2708 * those marked hidden by secchan (e.g., by in-band control). */
2710 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
2712 struct ofp_match match
;
2713 struct cls_rule target
;
2714 struct flow_stats_ds_cbdata cbdata
;
2716 memset(&match
, 0, sizeof match
);
2717 match
.wildcards
= htonl(OFPFW_ALL
);
2720 cbdata
.results
= results
;
2722 cls_rule_from_match(&target
, &match
, 0);
2723 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
2724 flow_stats_ds_cb
, &cbdata
);
2727 struct aggregate_stats_cbdata
{
2728 struct ofproto
*ofproto
;
2730 uint64_t packet_count
;
2731 uint64_t byte_count
;
2736 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2738 struct rule
*rule
= rule_from_cls_rule(rule_
);
2739 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
2740 uint64_t packet_count
, byte_count
;
2742 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2746 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2748 cbdata
->packet_count
+= packet_count
;
2749 cbdata
->byte_count
+= byte_count
;
2754 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2755 const struct ofp_stats_request
*osr
,
2758 struct ofp_aggregate_stats_request
*asr
;
2759 struct ofp_aggregate_stats_reply
*reply
;
2760 struct aggregate_stats_cbdata cbdata
;
2761 struct cls_rule target
;
2764 if (arg_size
!= sizeof *asr
) {
2765 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2767 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
2769 COVERAGE_INC(ofproto_agg_request
);
2771 cbdata
.out_port
= asr
->out_port
;
2772 cbdata
.packet_count
= 0;
2773 cbdata
.byte_count
= 0;
2775 cls_rule_from_match(&target
, &asr
->match
, 0);
2776 classifier_for_each_match(&p
->cls
, &target
,
2777 table_id_to_include(asr
->table_id
),
2778 aggregate_stats_cb
, &cbdata
);
2780 msg
= start_stats_reply(osr
, sizeof *reply
);
2781 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
2782 reply
->flow_count
= htonl(cbdata
.n_flows
);
2783 reply
->packet_count
= htonll(cbdata
.packet_count
);
2784 reply
->byte_count
= htonll(cbdata
.byte_count
);
2785 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2790 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2791 struct ofp_header
*oh
)
2793 struct ofp_stats_request
*osr
;
2797 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
2802 osr
= (struct ofp_stats_request
*) oh
;
2804 switch (ntohs(osr
->type
)) {
2806 return handle_desc_stats_request(p
, ofconn
, osr
);
2809 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
2811 case OFPST_AGGREGATE
:
2812 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
2815 return handle_table_stats_request(p
, ofconn
, osr
);
2818 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
2821 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
2824 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
2828 static long long int
2829 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
2831 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
2835 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
2836 const struct odp_flow_stats
*stats
)
2838 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
2839 if (used
> rule
->used
) {
2841 if (rule
->super
&& used
> rule
->super
->used
) {
2842 rule
->super
->used
= used
;
2844 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
2849 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
2850 const struct odp_flow_stats
*stats
)
2852 if (stats
->n_packets
) {
2853 update_time(ofproto
, rule
, stats
);
2854 rule
->packet_count
+= stats
->n_packets
;
2855 rule
->byte_count
+= stats
->n_bytes
;
2856 netflow_flow_update_flags(&rule
->nf_flow
, stats
->ip_tos
,
2862 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
2863 struct ofp_flow_mod
*ofm
, size_t n_actions
)
2865 struct ofpbuf
*packet
;
2870 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
2874 flow_from_match(&flow
, &wildcards
, &ofm
->match
);
2875 if (classifier_rule_overlaps(&p
->cls
, &flow
, wildcards
,
2876 ntohs(ofm
->priority
))) {
2877 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
2881 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
2882 n_actions
, ntohs(ofm
->idle_timeout
),
2883 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
2884 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
2885 cls_rule_from_match(&rule
->cr
, &ofm
->match
, ntohs(ofm
->priority
));
2888 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
2889 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
2893 in_port
= UINT16_MAX
;
2896 rule_insert(p
, rule
, packet
, in_port
);
2897 ofpbuf_delete(packet
);
2902 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2903 size_t n_actions
, uint16_t command
, struct rule
*rule
)
2905 if (rule_is_hidden(rule
)) {
2909 if (command
== OFPFC_DELETE
) {
2910 long long int now
= time_msec();
2911 send_flow_removed(p
, rule
, now
, OFPRR_DELETE
);
2912 rule_remove(p
, rule
);
2914 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
2916 if (n_actions
== rule
->n_actions
2917 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
2922 free(rule
->actions
);
2923 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
2924 rule
->n_actions
= n_actions
;
2925 rule
->flow_cookie
= ofm
->cookie
;
2927 if (rule
->cr
.wc
.wildcards
) {
2928 COVERAGE_INC(ofproto_mod_wc_flow
);
2929 p
->need_revalidate
= true;
2931 rule_update_actions(p
, rule
);
2939 modify_flows_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2940 size_t n_actions
, uint16_t command
)
2946 flow_from_match(&flow
, &wildcards
, &ofm
->match
);
2947 rule
= rule_from_cls_rule(classifier_find_rule_exactly(
2948 &p
->cls
, &flow
, wildcards
,
2949 ntohs(ofm
->priority
)));
2952 if (command
== OFPFC_DELETE
2953 && ofm
->out_port
!= htons(OFPP_NONE
)
2954 && !rule_has_out_port(rule
, ofm
->out_port
)) {
2958 modify_flow(p
, ofm
, n_actions
, command
, rule
);
2963 struct modify_flows_cbdata
{
2964 struct ofproto
*ofproto
;
2965 const struct ofp_flow_mod
*ofm
;
2972 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
2974 struct rule
*rule
= rule_from_cls_rule(rule_
);
2975 struct modify_flows_cbdata
*cbdata
= cbdata_
;
2977 if (cbdata
->out_port
!= htons(OFPP_NONE
)
2978 && !rule_has_out_port(rule
, cbdata
->out_port
)) {
2982 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
,
2983 cbdata
->command
, rule
);
2987 modify_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
2988 size_t n_actions
, uint16_t command
)
2990 struct modify_flows_cbdata cbdata
;
2991 struct cls_rule target
;
2995 cbdata
.out_port
= (command
== OFPFC_DELETE
? ofm
->out_port
2996 : htons(OFPP_NONE
));
2997 cbdata
.n_actions
= n_actions
;
2998 cbdata
.command
= command
;
3000 cls_rule_from_match(&target
, &ofm
->match
, 0);
3002 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3003 modify_flows_cb
, &cbdata
);
3008 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3009 struct ofp_flow_mod
*ofm
)
3014 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3015 sizeof *ofm
->actions
, &n_actions
);
3020 /* We do not support the emergency flow cache. It will hopefully
3021 * get dropped from OpenFlow in the near future. */
3022 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3023 /* There isn't a good fit for an error code, so just state that the
3024 * flow table is full. */
3025 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3028 normalize_match(&ofm
->match
);
3029 if (!ofm
->match
.wildcards
) {
3030 ofm
->priority
= htons(UINT16_MAX
);
3033 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3034 n_actions
, p
->max_ports
);
3039 switch (ntohs(ofm
->command
)) {
3041 return add_flow(p
, ofconn
, ofm
, n_actions
);
3044 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_MODIFY
);
3046 case OFPFC_MODIFY_STRICT
:
3047 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_MODIFY
);
3050 return modify_flows_loose(p
, ofm
, n_actions
, OFPFC_DELETE
);
3052 case OFPFC_DELETE_STRICT
:
3053 return modify_flows_strict(p
, ofm
, n_actions
, OFPFC_DELETE
);
3056 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3061 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3063 struct ofp_vendor_header
*ovh
= msg
;
3064 struct nicira_header
*nh
;
3066 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3067 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3069 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3070 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3072 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3073 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3077 switch (ntohl(nh
->subtype
)) {
3078 case NXT_STATUS_REQUEST
:
3079 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3083 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3087 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3089 struct ofp_header
*ob
;
3092 /* Currently, everything executes synchronously, so we can just
3093 * immediately send the barrier reply. */
3094 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
3095 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3100 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
3101 struct ofpbuf
*ofp_msg
)
3103 struct ofp_header
*oh
= ofp_msg
->data
;
3106 COVERAGE_INC(ofproto_recv_openflow
);
3108 case OFPT_ECHO_REQUEST
:
3109 error
= handle_echo_request(ofconn
, oh
);
3112 case OFPT_ECHO_REPLY
:
3116 case OFPT_FEATURES_REQUEST
:
3117 error
= handle_features_request(p
, ofconn
, oh
);
3120 case OFPT_GET_CONFIG_REQUEST
:
3121 error
= handle_get_config_request(p
, ofconn
, oh
);
3124 case OFPT_SET_CONFIG
:
3125 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
3128 case OFPT_PACKET_OUT
:
3129 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
3133 error
= handle_port_mod(p
, oh
);
3137 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
3140 case OFPT_STATS_REQUEST
:
3141 error
= handle_stats_request(p
, ofconn
, oh
);
3145 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
3148 case OFPT_BARRIER_REQUEST
:
3149 error
= handle_barrier_request(ofconn
, oh
);
3153 if (VLOG_IS_WARN_ENABLED()) {
3154 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
3155 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
3158 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
3163 send_error_oh(ofconn
, ofp_msg
->data
, error
);
3168 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3170 struct odp_msg
*msg
= packet
->data
;
3171 uint16_t in_port
= odp_port_to_ofp_port(msg
->port
);
3173 struct ofpbuf payload
;
3176 payload
.data
= msg
+ 1;
3177 payload
.size
= msg
->length
- sizeof *msg
;
3178 flow_extract(&payload
, msg
->port
, &flow
);
3180 /* Check with in-band control to see if this packet should be sent
3181 * to the local port regardless of the flow table. */
3182 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
3183 union odp_action action
;
3185 memset(&action
, 0, sizeof(action
));
3186 action
.output
.type
= ODPAT_OUTPUT
;
3187 action
.output
.port
= ODPP_LOCAL
;
3188 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
3191 rule
= lookup_valid_rule(p
, &flow
);
3193 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3194 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
3196 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
3197 COVERAGE_INC(ofproto_no_packet_in
);
3198 /* XXX install 'drop' flow entry */
3199 ofpbuf_delete(packet
);
3203 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
3206 COVERAGE_INC(ofproto_packet_in
);
3207 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3211 if (rule
->cr
.wc
.wildcards
) {
3212 rule
= rule_create_subrule(p
, rule
, &flow
);
3213 rule_make_actions(p
, rule
, packet
);
3215 if (!rule
->may_install
) {
3216 /* The rule is not installable, that is, we need to process every
3217 * packet, so process the current packet and set its actions into
3219 rule_make_actions(p
, rule
, packet
);
3221 /* XXX revalidate rule if it needs it */
3225 rule_execute(p
, rule
, &payload
, &flow
);
3226 rule_reinstall(p
, rule
);
3228 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
3229 && rconn_is_connected(p
->controller
->rconn
)) {
3231 * Extra-special case for fail-open mode.
3233 * We are in fail-open mode and the packet matched the fail-open rule,
3234 * but we are connected to a controller too. We should send the packet
3235 * up to the controller in the hope that it will try to set up a flow
3236 * and thereby allow us to exit fail-open.
3238 * See the top-level comment in fail-open.c for more information.
3240 pinsched_send(p
->miss_sched
, in_port
, packet
, send_packet_in_miss
, p
);
3242 ofpbuf_delete(packet
);
3247 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3249 struct odp_msg
*msg
= packet
->data
;
3251 switch (msg
->type
) {
3252 case _ODPL_ACTION_NR
:
3253 COVERAGE_INC(ofproto_ctlr_action
);
3254 pinsched_send(p
->action_sched
, odp_port_to_ofp_port(msg
->port
), packet
,
3255 send_packet_in_action
, p
);
3258 case _ODPL_SFLOW_NR
:
3260 ofproto_sflow_received(p
->sflow
, msg
);
3262 ofpbuf_delete(packet
);
3266 handle_odp_miss_msg(p
, packet
);
3270 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
3277 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
3279 struct rule
*sub
= rule_from_cls_rule(sub_
);
3280 struct revalidate_cbdata
*cbdata
= cbdata_
;
3282 if (cbdata
->revalidate_all
3283 || (cbdata
->revalidate_subrules
&& sub
->super
)
3284 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
3285 revalidate_rule(cbdata
->ofproto
, sub
);
3290 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
3292 const flow_t
*flow
= &rule
->cr
.flow
;
3294 COVERAGE_INC(ofproto_revalidate_rule
);
3297 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
3299 rule_remove(p
, rule
);
3301 } else if (super
!= rule
->super
) {
3302 COVERAGE_INC(ofproto_revalidate_moved
);
3303 list_remove(&rule
->list
);
3304 list_push_back(&super
->list
, &rule
->list
);
3305 rule
->super
= super
;
3306 rule
->hard_timeout
= super
->hard_timeout
;
3307 rule
->idle_timeout
= super
->idle_timeout
;
3308 rule
->created
= super
->created
;
3313 rule_update_actions(p
, rule
);
3317 static struct ofpbuf
*
3318 compose_flow_removed(const struct rule
*rule
, long long int now
, uint8_t reason
)
3320 struct ofp_flow_removed
*ofr
;
3322 long long int tdiff
= time_msec() - rule
->created
;
3323 uint32_t sec
= tdiff
/ 1000;
3324 uint32_t msec
= tdiff
- (sec
* 1000);
3326 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
3327 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, &ofr
->match
);
3328 ofr
->cookie
= rule
->flow_cookie
;
3329 ofr
->priority
= htons(rule
->cr
.priority
);
3330 ofr
->reason
= reason
;
3331 ofr
->duration_sec
= htonl(sec
);
3332 ofr
->duration_nsec
= htonl(msec
* 1000000);
3333 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
3334 ofr
->packet_count
= htonll(rule
->packet_count
);
3335 ofr
->byte_count
= htonll(rule
->byte_count
);
3341 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
3343 assert(rule
->installed
);
3344 assert(!rule
->cr
.wc
.wildcards
);
3347 rule_remove(ofproto
, rule
);
3349 rule_uninstall(ofproto
, rule
);
3353 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
3354 long long int now
, uint8_t reason
)
3356 struct ofconn
*ofconn
;
3357 struct ofconn
*prev
;
3358 struct ofpbuf
*buf
= NULL
;
3360 /* We limit the maximum number of queued flow expirations it by accounting
3361 * them under the counter for replies. That works because preventing
3362 * OpenFlow requests from being processed also prevents new flows from
3363 * being added (and expiring). (It also prevents processing OpenFlow
3364 * requests that would not add new flows, so it is imperfect.) */
3367 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3368 if (rule
->send_flow_removed
&& rconn_is_connected(ofconn
->rconn
)) {
3370 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
3372 buf
= compose_flow_removed(rule
, now
, reason
);
3378 queue_tx(buf
, prev
, prev
->reply_counter
);
3384 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
3386 struct ofproto
*p
= p_
;
3387 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
3388 long long int hard_expire
, idle_expire
, expire
, now
;
3390 hard_expire
= (rule
->hard_timeout
3391 ? rule
->created
+ rule
->hard_timeout
* 1000
3393 idle_expire
= (rule
->idle_timeout
3394 && (rule
->super
|| list_is_empty(&rule
->list
))
3395 ? rule
->used
+ rule
->idle_timeout
* 1000
3397 expire
= MIN(hard_expire
, idle_expire
);
3401 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
3402 uninstall_idle_flow(p
, rule
);
3403 } else if (!rule
->cr
.wc
.wildcards
) {
3404 active_timeout(p
, rule
);
3410 COVERAGE_INC(ofproto_expired
);
3412 /* Update stats. This code will be a no-op if the rule expired
3413 * due to an idle timeout. */
3414 if (rule
->cr
.wc
.wildcards
) {
3415 struct rule
*subrule
, *next
;
3416 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
3417 rule_remove(p
, subrule
);
3420 rule_uninstall(p
, rule
);
3423 if (!rule_is_hidden(rule
)) {
3424 send_flow_removed(p
, rule
, now
,
3426 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
3428 rule_remove(p
, rule
);
3432 active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
3434 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
3435 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
3436 struct ofexpired expired
;
3437 struct odp_flow odp_flow
;
3439 /* Get updated flow stats. */
3440 memset(&odp_flow
, 0, sizeof odp_flow
);
3441 if (rule
->installed
) {
3442 odp_flow
.key
= rule
->cr
.flow
;
3443 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
3444 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
3446 if (odp_flow
.stats
.n_packets
) {
3447 update_time(ofproto
, rule
, &odp_flow
.stats
);
3448 netflow_flow_update_flags(&rule
->nf_flow
, odp_flow
.stats
.ip_tos
,
3449 odp_flow
.stats
.tcp_flags
);
3453 expired
.flow
= rule
->cr
.flow
;
3454 expired
.packet_count
= rule
->packet_count
+
3455 odp_flow
.stats
.n_packets
;
3456 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
3457 expired
.used
= rule
->used
;
3459 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
3461 /* Schedule us to send the accumulated records once we have
3462 * collected all of them. */
3463 poll_immediate_wake();
3468 update_used(struct ofproto
*p
)
3470 struct odp_flow
*flows
;
3475 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
3480 for (i
= 0; i
< n_flows
; i
++) {
3481 struct odp_flow
*f
= &flows
[i
];
3484 rule
= rule_from_cls_rule(
3485 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
3486 if (!rule
|| !rule
->installed
) {
3487 COVERAGE_INC(ofproto_unexpected_rule
);
3488 dpif_flow_del(p
->dpif
, f
);
3492 update_time(p
, rule
, &f
->stats
);
3493 rule_account(p
, rule
, f
->stats
.n_bytes
);
3499 do_send_packet_in(struct ofconn
*ofconn
, uint32_t buffer_id
,
3500 const struct ofpbuf
*packet
, int send_len
)
3502 struct odp_msg
*msg
= packet
->data
;
3503 struct ofpbuf payload
;
3507 /* Extract packet payload from 'msg'. */
3508 payload
.data
= msg
+ 1;
3509 payload
.size
= msg
->length
- sizeof *msg
;
3511 /* Construct ofp_packet_in message. */
3512 reason
= msg
->type
== _ODPL_ACTION_NR
? OFPR_ACTION
: OFPR_NO_MATCH
;
3513 opi
= make_packet_in(buffer_id
, odp_port_to_ofp_port(msg
->port
), reason
,
3514 &payload
, send_len
);
3517 rconn_send_with_limit(ofconn
->rconn
, opi
, ofconn
->packet_in_counter
, 100);
3521 send_packet_in_action(struct ofpbuf
*packet
, void *p_
)
3523 struct ofproto
*p
= p_
;
3524 struct ofconn
*ofconn
;
3525 struct odp_msg
*msg
;
3528 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3529 if (ofconn
== p
->controller
|| ofconn
->miss_send_len
) {
3530 do_send_packet_in(ofconn
, UINT32_MAX
, packet
, msg
->arg
);
3533 ofpbuf_delete(packet
);
3537 send_packet_in_miss(struct ofpbuf
*packet
, void *p_
)
3539 struct ofproto
*p
= p_
;
3540 bool in_fail_open
= p
->fail_open
&& fail_open_is_active(p
->fail_open
);
3541 struct ofconn
*ofconn
;
3542 struct ofpbuf payload
;
3543 struct odp_msg
*msg
;
3546 payload
.data
= msg
+ 1;
3547 payload
.size
= msg
->length
- sizeof *msg
;
3548 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3549 if (ofconn
->miss_send_len
) {
3550 struct pktbuf
*pb
= ofconn
->pktbuf
;
3551 uint32_t buffer_id
= (in_fail_open
3553 : pktbuf_save(pb
, &payload
, msg
->port
));
3554 int send_len
= (buffer_id
!= UINT32_MAX
? ofconn
->miss_send_len
3556 do_send_packet_in(ofconn
, buffer_id
, packet
, send_len
);
3559 ofpbuf_delete(packet
);
3563 pick_datapath_id(const struct ofproto
*ofproto
)
3565 const struct ofport
*port
;
3567 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
3569 uint8_t ea
[ETH_ADDR_LEN
];
3572 error
= netdev_get_etheraddr(port
->netdev
, ea
);
3574 return eth_addr_to_uint64(ea
);
3576 VLOG_WARN("could not get MAC address for %s (%s)",
3577 netdev_get_name(port
->netdev
), strerror(error
));
3579 return ofproto
->fallback_dpid
;
3583 pick_fallback_dpid(void)
3585 uint8_t ea
[ETH_ADDR_LEN
];
3586 eth_addr_nicira_random(ea
);
3587 return eth_addr_to_uint64(ea
);
3591 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
3592 struct odp_actions
*actions
, tag_type
*tags
,
3593 uint16_t *nf_output_iface
, void *ofproto_
)
3595 struct ofproto
*ofproto
= ofproto_
;
3598 /* Drop frames for reserved multicast addresses. */
3599 if (eth_addr_is_reserved(flow
->dl_dst
)) {
3603 /* Learn source MAC (but don't try to learn from revalidation). */
3604 if (packet
!= NULL
) {
3605 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
3608 /* The log messages here could actually be useful in debugging,
3609 * so keep the rate limit relatively high. */
3610 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
3611 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
3612 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
3613 ofproto_revalidate(ofproto
, rev_tag
);
3617 /* Determine output port. */
3618 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
);
3620 add_output_group_action(actions
, DP_GROUP_FLOOD
, nf_output_iface
);
3621 } else if (out_port
!= flow
->in_port
) {
3622 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
3623 *nf_output_iface
= out_port
;
3631 static const struct ofhooks default_ofhooks
= {
3633 default_normal_ofhook_cb
,