2 * Copyright (c) 2009, 2010 Nicira Networks.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
22 #include <sys/socket.h>
24 #include <netinet/in.h>
27 #include "byte-order.h"
28 #include "classifier.h"
30 #include "discovery.h"
32 #include "dynamic-string.h"
33 #include "fail-open.h"
37 #include "mac-learning.h"
41 #include "ofp-print.h"
43 #include "ofproto-sflow.h"
45 #include "openflow/nicira-ext.h"
46 #include "openflow/openflow.h"
47 #include "openvswitch/datapath-protocol.h"
51 #include "poll-loop.h"
55 #include "stream-ssl.h"
63 VLOG_DEFINE_THIS_MODULE(ofproto
);
65 #include "sflow_api.h"
69 TABLEID_CLASSIFIER
= 1
74 struct hmap_node hmap_node
; /* In struct ofproto's "ports" hmap. */
75 struct netdev
*netdev
;
76 struct ofp_phy_port opp
; /* In host byte order. */
80 static void ofport_free(struct ofport
*);
81 static void hton_ofp_phy_port(struct ofp_phy_port
*);
83 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
84 const struct flow
*, struct ofproto
*,
85 const struct ofpbuf
*packet
,
86 struct odp_actions
*out
, tag_type
*tags
,
87 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
92 ovs_be64 flow_cookie
; /* Controller-issued identifier. */
93 uint16_t idle_timeout
; /* In seconds from time of last use. */
94 uint16_t hard_timeout
; /* In seconds from time of creation. */
95 bool send_flow_removed
; /* Send a flow removed message? */
96 long long int used
; /* Last-used time (0 if never used). */
97 long long int created
; /* Creation time. */
98 uint64_t packet_count
; /* Number of packets received. */
99 uint64_t byte_count
; /* Number of bytes received. */
100 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
101 tag_type tags
; /* Tags (set only by hooks). */
102 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
104 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
105 * exact-match rule (having cr.wc.wildcards of 0) generated from the
106 * wildcard rule 'super'. In this case, 'list' is an element of the
109 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
110 * a list of subrules. A super-rule with no wildcards (where
111 * cr.wc.wildcards is 0) will never have any subrules. */
117 * 'n_actions' is the number of elements in the 'actions' array. A single
118 * action may take up more more than one element's worth of space.
120 * A subrule has no actions (it uses the super-rule's actions). */
122 union ofp_action
*actions
;
126 * A super-rule with wildcard fields never has ODP actions (since the
127 * datapath only supports exact-match flows). */
128 bool installed
; /* Installed in datapath? */
129 bool may_install
; /* True ordinarily; false if actions must
130 * be reassessed for every packet. */
132 union odp_action
*odp_actions
;
136 rule_is_hidden(const struct rule
*rule
)
138 /* Subrules are merely an implementation detail, so hide them from the
140 if (rule
->super
!= NULL
) {
144 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
145 * (e.g. by in-band control) and are intentionally hidden from the
147 if (rule
->cr
.priority
> UINT16_MAX
) {
154 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
155 const union ofp_action
*, size_t n_actions
,
156 uint16_t idle_timeout
, uint16_t hard_timeout
,
157 ovs_be64 flow_cookie
, bool send_flow_removed
);
158 static void rule_free(struct rule
*);
159 static void rule_destroy(struct ofproto
*, struct rule
*);
160 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
161 static void rule_insert(struct ofproto
*, struct rule
*,
162 struct ofpbuf
*packet
, uint16_t in_port
);
163 static void rule_remove(struct ofproto
*, struct rule
*);
164 static bool rule_make_actions(struct ofproto
*, struct rule
*,
165 const struct ofpbuf
*packet
);
166 static void rule_install(struct ofproto
*, struct rule
*,
167 struct rule
*displaced_rule
);
168 static void rule_uninstall(struct ofproto
*, struct rule
*);
169 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
170 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
171 long long int now
, uint8_t reason
);
173 /* ofproto supports two kinds of OpenFlow connections:
175 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
176 * maintains persistent connections to these controllers and by default
177 * sends them asynchronous messages such as packet-ins.
179 * - "Service" connections, e.g. from ovs-ofctl. When these connections
180 * drop, it is the other side's responsibility to reconnect them if
181 * necessary. ofproto does not send them asynchronous messages by default.
183 * Currently, active (tcp, ssl, unix) connections are always "primary"
184 * connections and passive (ptcp, pssl, punix) connections are always "service"
185 * connections. There is no inherent reason for this, but it reflects the
189 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
190 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
193 /* A listener for incoming OpenFlow "service" connections. */
195 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
196 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
198 /* These are not used by ofservice directly. They are settings for
199 * accepted "struct ofconn"s from the pvconn. */
200 int probe_interval
; /* Max idle time before probing, in seconds. */
201 int rate_limit
; /* Max packet-in rate in packets per second. */
202 int burst_limit
; /* Limit on accumulating packet credits. */
205 static struct ofservice
*ofservice_lookup(struct ofproto
*,
207 static int ofservice_create(struct ofproto
*,
208 const struct ofproto_controller
*);
209 static void ofservice_reconfigure(struct ofservice
*,
210 const struct ofproto_controller
*);
211 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
213 /* An OpenFlow connection. */
215 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
216 struct list node
; /* In struct ofproto's "all_conns" list. */
217 struct rconn
*rconn
; /* OpenFlow connection. */
218 enum ofconn_type type
; /* Type. */
220 /* OFPT_PACKET_IN related data. */
221 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
222 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
223 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
224 int miss_send_len
; /* Bytes to send of buffered packets. */
226 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
227 * requests, and the maximum number before we stop reading OpenFlow
229 #define OFCONN_REPLY_MAX 100
230 struct rconn_packet_counter
*reply_counter
;
232 /* type == OFCONN_PRIMARY only. */
233 enum nx_role role
; /* Role. */
234 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
235 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
236 struct status_category
*ss
; /* Switch status category. */
237 enum ofproto_band band
; /* In-band or out-of-band? */
240 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
241 * "schedulers" array. Their values are 0 and 1, and their meanings and values
242 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
243 * case anything ever changes, check their values here. */
244 #define N_SCHEDULERS 2
245 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
246 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
247 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
248 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
250 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
252 static void ofconn_destroy(struct ofconn
*);
253 static void ofconn_run(struct ofconn
*, struct ofproto
*);
254 static void ofconn_wait(struct ofconn
*);
255 static bool ofconn_receives_async_msgs(const struct ofconn
*);
256 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
257 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
259 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
260 struct rconn_packet_counter
*counter
);
262 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
263 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
267 uint64_t datapath_id
; /* Datapath ID. */
268 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
269 char *mfr_desc
; /* Manufacturer. */
270 char *hw_desc
; /* Hardware. */
271 char *sw_desc
; /* Software version. */
272 char *serial_desc
; /* Serial number. */
273 char *dp_desc
; /* Datapath description. */
277 struct netdev_monitor
*netdev_monitor
;
278 struct hmap ports
; /* Contains "struct ofport"s. */
279 struct shash port_by_name
;
283 struct switch_status
*switch_status
;
284 struct fail_open
*fail_open
;
285 struct netflow
*netflow
;
286 struct ofproto_sflow
*sflow
;
288 /* In-band control. */
289 struct in_band
*in_band
;
290 long long int next_in_band_update
;
291 struct sockaddr_in
*extra_in_band_remotes
;
292 size_t n_extra_remotes
;
295 struct classifier cls
;
296 bool need_revalidate
;
297 long long int next_expiration
;
298 struct tag_set revalidate_set
;
299 bool tun_id_from_cookie
;
301 /* OpenFlow connections. */
302 struct hmap controllers
; /* Controller "struct ofconn"s. */
303 struct list all_conns
; /* Contains "struct ofconn"s. */
304 enum ofproto_fail_mode fail_mode
;
306 /* OpenFlow listeners. */
307 struct hmap services
; /* Contains "struct ofservice"s. */
308 struct pvconn
**snoops
;
311 /* Hooks for ovs-vswitchd. */
312 const struct ofhooks
*ofhooks
;
315 /* Used by default ofhooks. */
316 struct mac_learning
*ml
;
319 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
321 static const struct ofhooks default_ofhooks
;
323 static uint64_t pick_datapath_id(const struct ofproto
*);
324 static uint64_t pick_fallback_dpid(void);
326 static int ofproto_expire(struct ofproto
*);
328 static void update_stats(struct ofproto
*, struct rule
*,
329 const struct odp_flow_stats
*);
330 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
331 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
333 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
335 static void handle_openflow(struct ofconn
*, struct ofproto
*,
338 static struct ofport
*get_port(const struct ofproto
*, uint16_t odp_port
);
339 static void update_port(struct ofproto
*, const char *devname
);
340 static int init_ports(struct ofproto
*);
341 static void reinit_ports(struct ofproto
*);
344 ofproto_create(const char *datapath
, const char *datapath_type
,
345 const struct ofhooks
*ofhooks
, void *aux
,
346 struct ofproto
**ofprotop
)
348 struct odp_stats stats
;
355 /* Connect to datapath and start listening for messages. */
356 error
= dpif_open(datapath
, datapath_type
, &dpif
);
358 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
361 error
= dpif_get_dp_stats(dpif
, &stats
);
363 VLOG_ERR("failed to obtain stats for datapath %s: %s",
364 datapath
, strerror(error
));
368 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
370 VLOG_ERR("failed to listen on datapath %s: %s",
371 datapath
, strerror(error
));
375 dpif_flow_flush(dpif
);
376 dpif_recv_purge(dpif
);
378 /* Initialize settings. */
379 p
= xzalloc(sizeof *p
);
380 p
->fallback_dpid
= pick_fallback_dpid();
381 p
->datapath_id
= p
->fallback_dpid
;
382 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
383 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
384 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
385 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
386 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
388 /* Initialize datapath. */
390 p
->netdev_monitor
= netdev_monitor_create();
391 hmap_init(&p
->ports
);
392 shash_init(&p
->port_by_name
);
393 p
->max_ports
= stats
.max_ports
;
395 /* Initialize submodules. */
396 p
->switch_status
= switch_status_create(p
);
402 /* Initialize flow table. */
403 classifier_init(&p
->cls
);
404 p
->need_revalidate
= false;
405 p
->next_expiration
= time_msec() + 1000;
406 tag_set_init(&p
->revalidate_set
);
408 /* Initialize OpenFlow connections. */
409 list_init(&p
->all_conns
);
410 hmap_init(&p
->controllers
);
411 hmap_init(&p
->services
);
415 /* Initialize hooks. */
417 p
->ofhooks
= ofhooks
;
421 p
->ofhooks
= &default_ofhooks
;
423 p
->ml
= mac_learning_create();
426 /* Pick final datapath ID. */
427 p
->datapath_id
= pick_datapath_id(p
);
428 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
435 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
437 uint64_t old_dpid
= p
->datapath_id
;
438 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
439 if (p
->datapath_id
!= old_dpid
) {
440 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
442 /* Force all active connections to reconnect, since there is no way to
443 * notify a controller that the datapath ID has changed. */
444 ofproto_reconnect_controllers(p
);
449 is_discovery_controller(const struct ofproto_controller
*c
)
451 return !strcmp(c
->target
, "discover");
455 is_in_band_controller(const struct ofproto_controller
*c
)
457 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
460 /* Creates a new controller in 'ofproto'. Some of the settings are initially
461 * drawn from 'c', but update_controller() needs to be called later to finish
462 * the new ofconn's configuration. */
464 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
466 struct discovery
*discovery
;
467 struct ofconn
*ofconn
;
469 if (is_discovery_controller(c
)) {
470 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
471 ofproto
->dpif
, ofproto
->switch_status
,
480 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_PRIMARY
);
481 ofconn
->pktbuf
= pktbuf_create();
482 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
484 ofconn
->discovery
= discovery
;
486 char *name
= ofconn_make_name(ofproto
, c
->target
);
487 rconn_connect(ofconn
->rconn
, c
->target
, name
);
490 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
491 hash_string(c
->target
, 0));
494 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
495 * target or turn discovery on or off (these are done by creating new ofconns
496 * and deleting old ones), but it can update the rest of an ofconn's
499 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
503 ofconn
->band
= (is_in_band_controller(c
)
504 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
506 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
508 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
509 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
511 if (ofconn
->discovery
) {
512 discovery_set_update_resolv_conf(ofconn
->discovery
,
513 c
->update_resolv_conf
);
514 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
517 ofconn_set_rate_limit(ofconn
, c
->rate_limit
, c
->burst_limit
);
521 ofconn_get_target(const struct ofconn
*ofconn
)
523 return ofconn
->discovery
? "discover" : rconn_get_target(ofconn
->rconn
);
526 static struct ofconn
*
527 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
529 struct ofconn
*ofconn
;
531 HMAP_FOR_EACH_WITH_HASH (ofconn
, hmap_node
,
532 hash_string(target
, 0), &ofproto
->controllers
) {
533 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
541 update_in_band_remotes(struct ofproto
*ofproto
)
543 const struct ofconn
*ofconn
;
544 struct sockaddr_in
*addrs
;
545 size_t max_addrs
, n_addrs
;
549 /* Allocate enough memory for as many remotes as we could possibly have. */
550 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
551 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
554 /* Add all the remotes. */
556 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
557 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
559 if (ofconn
->band
== OFPROTO_OUT_OF_BAND
) {
563 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
564 if (sin
->sin_addr
.s_addr
) {
565 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
568 if (ofconn
->discovery
) {
572 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
573 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
576 /* Create or update or destroy in-band.
578 * Ordinarily we only enable in-band if there's at least one remote
579 * address, but discovery needs the in-band rules for DHCP to be installed
580 * even before we know any remote addresses. */
581 if (n_addrs
|| discovery
) {
582 if (!ofproto
->in_band
) {
583 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
586 if (ofproto
->in_band
) {
587 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
589 ofproto
->next_in_band_update
= time_msec() + 1000;
591 in_band_destroy(ofproto
->in_band
);
592 ofproto
->in_band
= NULL
;
600 update_fail_open(struct ofproto
*p
)
602 struct ofconn
*ofconn
;
604 if (!hmap_is_empty(&p
->controllers
)
605 && p
->fail_mode
== OFPROTO_FAIL_STANDALONE
) {
606 struct rconn
**rconns
;
610 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
614 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
615 HMAP_FOR_EACH (ofconn
, hmap_node
, &p
->controllers
) {
616 rconns
[n
++] = ofconn
->rconn
;
619 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
620 /* p->fail_open takes ownership of 'rconns'. */
622 fail_open_destroy(p
->fail_open
);
628 ofproto_set_controllers(struct ofproto
*p
,
629 const struct ofproto_controller
*controllers
,
630 size_t n_controllers
)
632 struct shash new_controllers
;
633 struct ofconn
*ofconn
, *next_ofconn
;
634 struct ofservice
*ofservice
, *next_ofservice
;
638 /* Create newly configured controllers and services.
639 * Create a name to ofproto_controller mapping in 'new_controllers'. */
640 shash_init(&new_controllers
);
641 for (i
= 0; i
< n_controllers
; i
++) {
642 const struct ofproto_controller
*c
= &controllers
[i
];
644 if (!vconn_verify_name(c
->target
) || !strcmp(c
->target
, "discover")) {
645 if (!find_controller_by_target(p
, c
->target
)) {
646 add_controller(p
, c
);
648 } else if (!pvconn_verify_name(c
->target
)) {
649 if (!ofservice_lookup(p
, c
->target
) && ofservice_create(p
, c
)) {
653 VLOG_WARN_RL(&rl
, "%s: unsupported controller \"%s\"",
654 dpif_name(p
->dpif
), c
->target
);
658 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
661 /* Delete controllers that are no longer configured.
662 * Update configuration of all now-existing controllers. */
664 HMAP_FOR_EACH_SAFE (ofconn
, next_ofconn
, hmap_node
, &p
->controllers
) {
665 struct ofproto_controller
*c
;
667 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
669 ofconn_destroy(ofconn
);
671 update_controller(ofconn
, c
);
678 /* Delete services that are no longer configured.
679 * Update configuration of all now-existing services. */
680 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
681 struct ofproto_controller
*c
;
683 c
= shash_find_data(&new_controllers
,
684 pvconn_get_name(ofservice
->pvconn
));
686 ofservice_destroy(p
, ofservice
);
688 ofservice_reconfigure(ofservice
, c
);
692 shash_destroy(&new_controllers
);
694 update_in_band_remotes(p
);
697 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
698 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
699 struct ofconn
, hmap_node
);
700 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
701 rconn_status_cb
, ofconn
->rconn
);
706 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
708 p
->fail_mode
= fail_mode
;
712 /* Drops the connections between 'ofproto' and all of its controllers, forcing
713 * them to reconnect. */
715 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
717 struct ofconn
*ofconn
;
719 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
720 rconn_reconnect(ofconn
->rconn
);
725 any_extras_changed(const struct ofproto
*ofproto
,
726 const struct sockaddr_in
*extras
, size_t n
)
730 if (n
!= ofproto
->n_extra_remotes
) {
734 for (i
= 0; i
< n
; i
++) {
735 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
736 const struct sockaddr_in
*new = &extras
[i
];
738 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
739 old
->sin_port
!= new->sin_port
) {
747 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
748 * in-band control should guarantee access, in the same way that in-band
749 * control guarantees access to OpenFlow controllers. */
751 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
752 const struct sockaddr_in
*extras
, size_t n
)
754 if (!any_extras_changed(ofproto
, extras
, n
)) {
758 free(ofproto
->extra_in_band_remotes
);
759 ofproto
->n_extra_remotes
= n
;
760 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
762 update_in_band_remotes(ofproto
);
766 ofproto_set_desc(struct ofproto
*p
,
767 const char *mfr_desc
, const char *hw_desc
,
768 const char *sw_desc
, const char *serial_desc
,
771 struct ofp_desc_stats
*ods
;
774 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
775 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
776 sizeof ods
->mfr_desc
);
779 p
->mfr_desc
= xstrdup(mfr_desc
);
782 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
783 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
784 sizeof ods
->hw_desc
);
787 p
->hw_desc
= xstrdup(hw_desc
);
790 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
791 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
792 sizeof ods
->sw_desc
);
795 p
->sw_desc
= xstrdup(sw_desc
);
798 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
799 VLOG_WARN("truncating serial_desc, must be less than %zu "
801 sizeof ods
->serial_num
);
803 free(p
->serial_desc
);
804 p
->serial_desc
= xstrdup(serial_desc
);
807 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
808 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
809 sizeof ods
->dp_desc
);
812 p
->dp_desc
= xstrdup(dp_desc
);
817 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
818 const struct svec
*svec
)
820 struct pvconn
**pvconns
= *pvconnsp
;
821 size_t n_pvconns
= *n_pvconnsp
;
825 for (i
= 0; i
< n_pvconns
; i
++) {
826 pvconn_close(pvconns
[i
]);
830 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
832 for (i
= 0; i
< svec
->n
; i
++) {
833 const char *name
= svec
->names
[i
];
834 struct pvconn
*pvconn
;
837 error
= pvconn_open(name
, &pvconn
);
839 pvconns
[n_pvconns
++] = pvconn
;
841 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
849 *n_pvconnsp
= n_pvconns
;
855 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
857 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
861 ofproto_set_netflow(struct ofproto
*ofproto
,
862 const struct netflow_options
*nf_options
)
864 if (nf_options
&& nf_options
->collectors
.n
) {
865 if (!ofproto
->netflow
) {
866 ofproto
->netflow
= netflow_create();
868 return netflow_set_options(ofproto
->netflow
, nf_options
);
870 netflow_destroy(ofproto
->netflow
);
871 ofproto
->netflow
= NULL
;
877 ofproto_set_sflow(struct ofproto
*ofproto
,
878 const struct ofproto_sflow_options
*oso
)
880 struct ofproto_sflow
*os
= ofproto
->sflow
;
883 struct ofport
*ofport
;
885 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
886 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
887 ofproto_sflow_add_port(os
, ofport
->odp_port
,
888 netdev_get_name(ofport
->netdev
));
891 ofproto_sflow_set_options(os
, oso
);
893 ofproto_sflow_destroy(os
);
894 ofproto
->sflow
= NULL
;
899 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
901 return ofproto
->datapath_id
;
905 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
907 return !hmap_is_empty(&ofproto
->controllers
);
910 enum ofproto_fail_mode
911 ofproto_get_fail_mode(const struct ofproto
*p
)
917 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
921 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
922 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
927 ofproto_destroy(struct ofproto
*p
)
929 struct ofservice
*ofservice
, *next_ofservice
;
930 struct ofconn
*ofconn
, *next_ofconn
;
931 struct ofport
*ofport
, *next_ofport
;
938 /* Destroy fail-open and in-band early, since they touch the classifier. */
939 fail_open_destroy(p
->fail_open
);
942 in_band_destroy(p
->in_band
);
944 free(p
->extra_in_band_remotes
);
946 ofproto_flush_flows(p
);
947 classifier_destroy(&p
->cls
);
949 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
950 ofconn_destroy(ofconn
);
952 hmap_destroy(&p
->controllers
);
955 netdev_monitor_destroy(p
->netdev_monitor
);
956 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
957 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
960 shash_destroy(&p
->port_by_name
);
962 switch_status_destroy(p
->switch_status
);
963 netflow_destroy(p
->netflow
);
964 ofproto_sflow_destroy(p
->sflow
);
966 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
967 ofservice_destroy(p
, ofservice
);
969 hmap_destroy(&p
->services
);
971 for (i
= 0; i
< p
->n_snoops
; i
++) {
972 pvconn_close(p
->snoops
[i
]);
976 mac_learning_destroy(p
->ml
);
981 free(p
->serial_desc
);
984 hmap_destroy(&p
->ports
);
990 ofproto_run(struct ofproto
*p
)
992 int error
= ofproto_run1(p
);
994 error
= ofproto_run2(p
, false);
1000 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1002 if (error
== ENOBUFS
) {
1003 reinit_ports(ofproto
);
1004 } else if (!error
) {
1005 update_port(ofproto
, devname
);
1010 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1011 * means that 'ofconn' is more interesting for monitoring than a lower return
1014 snoop_preference(const struct ofconn
*ofconn
)
1016 switch (ofconn
->role
) {
1017 case NX_ROLE_MASTER
:
1024 /* Shouldn't happen. */
1029 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1030 * Connects this vconn to a controller. */
1032 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1034 struct ofconn
*ofconn
, *best
;
1036 /* Pick a controller for monitoring. */
1038 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
1039 if (ofconn
->type
== OFCONN_PRIMARY
1040 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1046 rconn_add_monitor(best
->rconn
, vconn
);
1048 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1054 ofproto_run1(struct ofproto
*p
)
1056 struct ofconn
*ofconn
, *next_ofconn
;
1057 struct ofservice
*ofservice
;
1062 if (shash_is_empty(&p
->port_by_name
)) {
1066 for (i
= 0; i
< 50; i
++) {
1069 error
= dpif_recv(p
->dpif
, &buf
);
1071 if (error
== ENODEV
) {
1072 /* Someone destroyed the datapath behind our back. The caller
1073 * better destroy us and give up, because we're just going to
1074 * spin from here on out. */
1075 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1076 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1077 dpif_name(p
->dpif
));
1083 handle_odp_msg(p
, buf
);
1086 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1087 process_port_change(p
, error
, devname
);
1089 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1090 &devname
)) != EAGAIN
) {
1091 process_port_change(p
, error
, devname
);
1095 if (time_msec() >= p
->next_in_band_update
) {
1096 update_in_band_remotes(p
);
1098 in_band_run(p
->in_band
);
1101 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1102 ofconn_run(ofconn
, p
);
1105 /* Fail-open maintenance. Do this after processing the ofconns since
1106 * fail-open checks the status of the controller rconn. */
1108 fail_open_run(p
->fail_open
);
1111 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1112 struct vconn
*vconn
;
1115 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1117 struct rconn
*rconn
;
1120 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1121 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1122 rconn_connect_unreliably(rconn
, vconn
, name
);
1125 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1126 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1127 ofservice
->burst_limit
);
1128 } else if (retval
!= EAGAIN
) {
1129 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1133 for (i
= 0; i
< p
->n_snoops
; i
++) {
1134 struct vconn
*vconn
;
1137 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1139 add_snooper(p
, vconn
);
1140 } else if (retval
!= EAGAIN
) {
1141 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1145 if (time_msec() >= p
->next_expiration
) {
1146 int delay
= ofproto_expire(p
);
1147 p
->next_expiration
= time_msec() + delay
;
1148 COVERAGE_INC(ofproto_expiration
);
1152 netflow_run(p
->netflow
);
1155 ofproto_sflow_run(p
->sflow
);
1161 struct revalidate_cbdata
{
1162 struct ofproto
*ofproto
;
1163 bool revalidate_all
; /* Revalidate all exact-match rules? */
1164 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
1165 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
1169 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1171 if (p
->need_revalidate
|| revalidate_all
1172 || !tag_set_is_empty(&p
->revalidate_set
)) {
1173 struct revalidate_cbdata cbdata
;
1175 cbdata
.revalidate_all
= revalidate_all
;
1176 cbdata
.revalidate_subrules
= p
->need_revalidate
;
1177 cbdata
.revalidate_set
= p
->revalidate_set
;
1178 tag_set_init(&p
->revalidate_set
);
1179 COVERAGE_INC(ofproto_revalidate
);
1180 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
1181 p
->need_revalidate
= false;
1188 ofproto_wait(struct ofproto
*p
)
1190 struct ofservice
*ofservice
;
1191 struct ofconn
*ofconn
;
1194 dpif_recv_wait(p
->dpif
);
1195 dpif_port_poll_wait(p
->dpif
);
1196 netdev_monitor_poll_wait(p
->netdev_monitor
);
1197 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1198 ofconn_wait(ofconn
);
1201 poll_timer_wait_until(p
->next_in_band_update
);
1202 in_band_wait(p
->in_band
);
1205 fail_open_wait(p
->fail_open
);
1208 ofproto_sflow_wait(p
->sflow
);
1210 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1211 poll_immediate_wake();
1213 if (p
->need_revalidate
) {
1214 /* Shouldn't happen, but if it does just go around again. */
1215 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1216 poll_immediate_wake();
1217 } else if (p
->next_expiration
!= LLONG_MAX
) {
1218 poll_timer_wait_until(p
->next_expiration
);
1220 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1221 pvconn_wait(ofservice
->pvconn
);
1223 for (i
= 0; i
< p
->n_snoops
; i
++) {
1224 pvconn_wait(p
->snoops
[i
]);
1229 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1231 tag_set_add(&ofproto
->revalidate_set
, tag
);
1235 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1237 return &ofproto
->revalidate_set
;
1241 ofproto_is_alive(const struct ofproto
*p
)
1243 return !hmap_is_empty(&p
->controllers
);
1246 /* Deletes port number 'odp_port' from the datapath for 'ofproto'.
1248 * This is almost the same as calling dpif_port_del() directly on the
1249 * datapath, but it also makes 'ofproto' close its open netdev for the port
1250 * (if any). This makes it possible to create a new netdev of a different
1251 * type under the same name, which otherwise the netdev library would refuse
1252 * to do because of the conflict. (The netdev would eventually get closed on
1253 * the next trip through ofproto_run(), but this interface is more direct.)
1255 * Returns 0 if successful, otherwise a positive errno. */
1257 ofproto_port_del(struct ofproto
*ofproto
, uint16_t odp_port
)
1259 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1260 const char *name
= ofport
? (char *) ofport
->opp
.name
: "<unknown>";
1263 error
= dpif_port_del(ofproto
->dpif
, odp_port
);
1265 VLOG_ERR("%s: failed to remove port %"PRIu16
" (%s) interface (%s)",
1266 dpif_name(ofproto
->dpif
), odp_port
, name
, strerror(error
));
1267 } else if (ofport
) {
1268 /* 'name' is ofport->opp.name and update_port() is going to destroy
1269 * 'ofport'. Just in case update_port() refers to 'name' after it
1270 * destroys 'ofport', make a copy of it around the update_port()
1272 char *devname
= xstrdup(name
);
1273 update_port(ofproto
, devname
);
1279 /* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
1280 * true if 'odp_port' exists and should be included, false otherwise. */
1282 ofproto_port_is_floodable(struct ofproto
*ofproto
, uint16_t odp_port
)
1284 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1285 return ofport
&& !(ofport
->opp
.config
& OFPPC_NO_FLOOD
);
1289 ofproto_send_packet(struct ofproto
*p
, const struct flow
*flow
,
1290 const union ofp_action
*actions
, size_t n_actions
,
1291 const struct ofpbuf
*packet
)
1293 struct odp_actions odp_actions
;
1296 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1302 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1304 dpif_execute(p
->dpif
, odp_actions
.actions
, odp_actions
.n_actions
, packet
);
1309 ofproto_add_flow(struct ofproto
*p
, const struct flow
*flow
,
1310 uint32_t wildcards
, unsigned int priority
,
1311 const union ofp_action
*actions
, size_t n_actions
,
1315 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1316 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1318 cls_rule_from_flow(flow
, wildcards
, priority
, &rule
->cr
);
1319 rule_insert(p
, rule
, NULL
, 0);
1323 ofproto_delete_flow(struct ofproto
*ofproto
, const struct flow
*flow
,
1324 uint32_t wildcards
, unsigned int priority
)
1328 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1332 rule_remove(ofproto
, rule
);
1337 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1339 struct rule
*rule
= rule_from_cls_rule(rule_
);
1340 struct ofproto
*ofproto
= ofproto_
;
1342 /* Mark the flow as not installed, even though it might really be
1343 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1344 * There is no point in uninstalling it individually since we are about to
1345 * blow away all the flows with dpif_flow_flush(). */
1346 rule
->installed
= false;
1348 rule_remove(ofproto
, rule
);
1352 ofproto_flush_flows(struct ofproto
*ofproto
)
1354 COVERAGE_INC(ofproto_flush
);
1355 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1356 dpif_flow_flush(ofproto
->dpif
);
1357 if (ofproto
->in_band
) {
1358 in_band_flushed(ofproto
->in_band
);
1360 if (ofproto
->fail_open
) {
1361 fail_open_flushed(ofproto
->fail_open
);
1366 reinit_ports(struct ofproto
*p
)
1368 struct svec devnames
;
1369 struct ofport
*ofport
;
1370 struct odp_port
*odp_ports
;
1374 COVERAGE_INC(ofproto_reinit_ports
);
1376 svec_init(&devnames
);
1377 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1378 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1380 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1381 for (i
= 0; i
< n_odp_ports
; i
++) {
1382 svec_add (&devnames
, odp_ports
[i
].devname
);
1386 svec_sort_unique(&devnames
);
1387 for (i
= 0; i
< devnames
.n
; i
++) {
1388 update_port(p
, devnames
.names
[i
]);
1390 svec_destroy(&devnames
);
1393 static struct ofport
*
1394 make_ofport(const struct odp_port
*odp_port
)
1396 struct netdev_options netdev_options
;
1397 enum netdev_flags flags
;
1398 struct ofport
*ofport
;
1399 struct netdev
*netdev
;
1402 memset(&netdev_options
, 0, sizeof netdev_options
);
1403 netdev_options
.name
= odp_port
->devname
;
1404 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1406 error
= netdev_open(&netdev_options
, &netdev
);
1408 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1409 "cannot be opened (%s)",
1410 odp_port
->devname
, odp_port
->port
,
1411 odp_port
->devname
, strerror(error
));
1415 ofport
= xmalloc(sizeof *ofport
);
1416 ofport
->netdev
= netdev
;
1417 ofport
->odp_port
= odp_port
->port
;
1418 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1419 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1420 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1421 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1422 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1424 netdev_get_flags(netdev
, &flags
);
1425 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1427 ofport
->opp
.state
= netdev_get_carrier(netdev
) ? 0 : OFPPS_LINK_DOWN
;
1429 netdev_get_features(netdev
,
1430 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1431 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1436 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1438 if (get_port(p
, odp_port
->port
)) {
1439 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1442 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1443 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1452 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1454 const struct ofp_phy_port
*a
= &a_
->opp
;
1455 const struct ofp_phy_port
*b
= &b_
->opp
;
1457 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1458 return (a
->port_no
== b
->port_no
1459 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1460 && !strcmp((char *) a
->name
, (char *) b
->name
)
1461 && a
->state
== b
->state
1462 && a
->config
== b
->config
1463 && a
->curr
== b
->curr
1464 && a
->advertised
== b
->advertised
1465 && a
->supported
== b
->supported
1466 && a
->peer
== b
->peer
);
1470 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1473 /* XXX Should limit the number of queued port status change messages. */
1474 struct ofconn
*ofconn
;
1475 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1476 struct ofp_port_status
*ops
;
1479 if (!ofconn_receives_async_msgs(ofconn
)) {
1483 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1484 ops
->reason
= reason
;
1485 ops
->desc
= ofport
->opp
;
1486 hton_ofp_phy_port(&ops
->desc
);
1487 queue_tx(b
, ofconn
, NULL
);
1492 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1494 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1496 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1497 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->odp_port
, 0));
1498 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1500 ofproto_sflow_add_port(p
->sflow
, ofport
->odp_port
, netdev_name
);
1505 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1507 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1508 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1509 shash_delete(&p
->port_by_name
,
1510 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1512 ofproto_sflow_del_port(p
->sflow
, ofport
->odp_port
);
1517 ofport_free(struct ofport
*ofport
)
1520 netdev_close(ofport
->netdev
);
1525 static struct ofport
*
1526 get_port(const struct ofproto
*ofproto
, uint16_t odp_port
)
1528 struct ofport
*port
;
1530 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1531 hash_int(odp_port
, 0), &ofproto
->ports
) {
1532 if (port
->odp_port
== odp_port
) {
1540 update_port(struct ofproto
*p
, const char *devname
)
1542 struct odp_port odp_port
;
1543 struct ofport
*old_ofport
;
1544 struct ofport
*new_ofport
;
1547 COVERAGE_INC(ofproto_update_port
);
1549 /* Query the datapath for port information. */
1550 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1552 /* Find the old ofport. */
1553 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1556 /* There's no port named 'devname' but there might be a port with
1557 * the same port number. This could happen if a port is deleted
1558 * and then a new one added in its place very quickly, or if a port
1559 * is renamed. In the former case we want to send an OFPPR_DELETE
1560 * and an OFPPR_ADD, and in the latter case we want to send a
1561 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1562 * the old port's ifindex against the new port, or perhaps less
1563 * reliably but more portably by comparing the old port's MAC
1564 * against the new port's MAC. However, this code isn't that smart
1565 * and always sends an OFPPR_MODIFY (XXX). */
1566 old_ofport
= get_port(p
, odp_port
.port
);
1568 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1569 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1570 "%s", strerror(error
));
1574 /* Create a new ofport. */
1575 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1577 /* Eliminate a few pathological cases. */
1578 if (!old_ofport
&& !new_ofport
) {
1580 } else if (old_ofport
&& new_ofport
) {
1581 /* Most of the 'config' bits are OpenFlow soft state, but
1582 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1583 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1584 * leaves the other bits 0.) */
1585 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1587 if (ofport_equal(old_ofport
, new_ofport
)) {
1588 /* False alarm--no change. */
1589 ofport_free(new_ofport
);
1594 /* Now deal with the normal cases. */
1596 ofport_remove(p
, old_ofport
);
1599 ofport_install(p
, new_ofport
);
1601 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1602 (!old_ofport
? OFPPR_ADD
1603 : !new_ofport
? OFPPR_DELETE
1605 ofport_free(old_ofport
);
1609 init_ports(struct ofproto
*p
)
1611 struct odp_port
*ports
;
1616 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1621 for (i
= 0; i
< n_ports
; i
++) {
1622 const struct odp_port
*odp_port
= &ports
[i
];
1623 if (!ofport_conflicts(p
, odp_port
)) {
1624 struct ofport
*ofport
= make_ofport(odp_port
);
1626 ofport_install(p
, ofport
);
1634 static struct ofconn
*
1635 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1637 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1638 ofconn
->ofproto
= p
;
1639 list_push_back(&p
->all_conns
, &ofconn
->node
);
1640 ofconn
->rconn
= rconn
;
1641 ofconn
->type
= type
;
1642 ofconn
->role
= NX_ROLE_OTHER
;
1643 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1644 ofconn
->pktbuf
= NULL
;
1645 ofconn
->miss_send_len
= 0;
1646 ofconn
->reply_counter
= rconn_packet_counter_create ();
1651 ofconn_destroy(struct ofconn
*ofconn
)
1653 if (ofconn
->type
== OFCONN_PRIMARY
) {
1654 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1656 discovery_destroy(ofconn
->discovery
);
1658 list_remove(&ofconn
->node
);
1659 switch_status_unregister(ofconn
->ss
);
1660 rconn_destroy(ofconn
->rconn
);
1661 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1662 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1663 pktbuf_destroy(ofconn
->pktbuf
);
1668 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1673 if (ofconn
->discovery
) {
1674 char *controller_name
;
1675 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1676 discovery_question_connectivity(ofconn
->discovery
);
1678 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1679 if (controller_name
) {
1680 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1681 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1684 rconn_disconnect(ofconn
->rconn
);
1689 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1690 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1693 rconn_run(ofconn
->rconn
);
1695 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1696 /* Limit the number of iterations to prevent other tasks from
1698 for (iteration
= 0; iteration
< 50; iteration
++) {
1699 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1704 fail_open_maybe_recover(p
->fail_open
);
1706 handle_openflow(ofconn
, p
, of_msg
);
1707 ofpbuf_delete(of_msg
);
1711 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1712 ofconn_destroy(ofconn
);
1717 ofconn_wait(struct ofconn
*ofconn
)
1721 if (ofconn
->discovery
) {
1722 discovery_wait(ofconn
->discovery
);
1724 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1725 pinsched_wait(ofconn
->schedulers
[i
]);
1727 rconn_run_wait(ofconn
->rconn
);
1728 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1729 rconn_recv_wait(ofconn
->rconn
);
1731 COVERAGE_INC(ofproto_ofconn_stuck
);
1735 /* Returns true if 'ofconn' should receive asynchronous messages. */
1737 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1739 if (ofconn
->type
== OFCONN_PRIMARY
) {
1740 /* Primary controllers always get asynchronous messages unless they
1741 * have configured themselves as "slaves". */
1742 return ofconn
->role
!= NX_ROLE_SLAVE
;
1744 /* Service connections don't get asynchronous messages unless they have
1745 * explicitly asked for them by setting a nonzero miss send length. */
1746 return ofconn
->miss_send_len
> 0;
1750 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1751 * and 'target', suitable for use in log messages for identifying the
1754 * The name is dynamically allocated. The caller should free it (with free())
1755 * when it is no longer needed. */
1757 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1759 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1763 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1767 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1768 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1772 *s
= pinsched_create(rate
, burst
,
1773 ofconn
->ofproto
->switch_status
);
1775 pinsched_set_limits(*s
, rate
, burst
);
1778 pinsched_destroy(*s
);
1785 ofservice_reconfigure(struct ofservice
*ofservice
,
1786 const struct ofproto_controller
*c
)
1788 ofservice
->probe_interval
= c
->probe_interval
;
1789 ofservice
->rate_limit
= c
->rate_limit
;
1790 ofservice
->burst_limit
= c
->burst_limit
;
1793 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1794 * positive errno value. */
1796 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1798 struct ofservice
*ofservice
;
1799 struct pvconn
*pvconn
;
1802 error
= pvconn_open(c
->target
, &pvconn
);
1807 ofservice
= xzalloc(sizeof *ofservice
);
1808 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1809 hash_string(c
->target
, 0));
1810 ofservice
->pvconn
= pvconn
;
1812 ofservice_reconfigure(ofservice
, c
);
1818 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1820 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1821 pvconn_close(ofservice
->pvconn
);
1825 /* Finds and returns the ofservice within 'ofproto' that has the given
1826 * 'target', or a null pointer if none exists. */
1827 static struct ofservice
*
1828 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1830 struct ofservice
*ofservice
;
1832 HMAP_FOR_EACH_WITH_HASH (ofservice
, node
, hash_string(target
, 0),
1833 &ofproto
->services
) {
1834 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1841 /* Caller is responsible for initializing the 'cr' member of the returned
1843 static struct rule
*
1844 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1845 const union ofp_action
*actions
, size_t n_actions
,
1846 uint16_t idle_timeout
, uint16_t hard_timeout
,
1847 ovs_be64 flow_cookie
, bool send_flow_removed
)
1849 struct rule
*rule
= xzalloc(sizeof *rule
);
1850 rule
->idle_timeout
= idle_timeout
;
1851 rule
->hard_timeout
= hard_timeout
;
1852 rule
->flow_cookie
= flow_cookie
;
1853 rule
->used
= rule
->created
= time_msec();
1854 rule
->send_flow_removed
= send_flow_removed
;
1855 rule
->super
= super
;
1857 list_push_back(&super
->list
, &rule
->list
);
1859 list_init(&rule
->list
);
1861 if (n_actions
> 0) {
1862 rule
->n_actions
= n_actions
;
1863 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1865 netflow_flow_clear(&rule
->nf_flow
);
1866 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1871 static struct rule
*
1872 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1874 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1878 rule_free(struct rule
*rule
)
1880 free(rule
->actions
);
1881 free(rule
->odp_actions
);
1885 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1886 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1887 * through all of its subrules and revalidates them, destroying any that no
1888 * longer has a super-rule (which is probably all of them).
1890 * Before calling this function, the caller must make have removed 'rule' from
1891 * the classifier. If 'rule' is an exact-match rule, the caller is also
1892 * responsible for ensuring that it has been uninstalled from the datapath. */
1894 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1897 struct rule
*subrule
, *next
;
1898 LIST_FOR_EACH_SAFE (subrule
, next
, list
, &rule
->list
) {
1899 revalidate_rule(ofproto
, subrule
);
1902 list_remove(&rule
->list
);
1908 rule_has_out_port(const struct rule
*rule
, ovs_be16 out_port
)
1910 const union ofp_action
*oa
;
1911 struct actions_iterator i
;
1913 if (out_port
== htons(OFPP_NONE
)) {
1916 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1917 oa
= actions_next(&i
)) {
1918 if (action_outputs_to_port(oa
, out_port
)) {
1925 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
1926 * 'packet', which arrived on 'in_port'.
1928 * Takes ownership of 'packet'. */
1930 execute_odp_actions(struct ofproto
*ofproto
, uint16_t in_port
,
1931 const union odp_action
*actions
, size_t n_actions
,
1932 struct ofpbuf
*packet
)
1934 if (n_actions
== 1 && actions
[0].type
== ODPAT_CONTROLLER
) {
1935 /* As an optimization, avoid a round-trip from userspace to kernel to
1936 * userspace. This also avoids possibly filling up kernel packet
1937 * buffers along the way. */
1938 struct odp_msg
*msg
;
1940 msg
= ofpbuf_push_uninit(packet
, sizeof *msg
);
1941 msg
->type
= _ODPL_ACTION_NR
;
1942 msg
->length
= sizeof(struct odp_msg
) + packet
->size
;
1943 msg
->port
= in_port
;
1945 msg
->arg
= actions
[0].controller
.arg
;
1947 send_packet_in(ofproto
, packet
);
1953 error
= dpif_execute(ofproto
->dpif
, actions
, n_actions
, packet
);
1954 ofpbuf_delete(packet
);
1959 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1960 * 'flow' and is considered to have arrived on ODP port 'in_port'. 'packet'
1961 * must have at least sizeof(struct ofp_packet_in) bytes of headroom.
1963 * The flow that 'packet' actually contains does not need to actually match
1964 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1965 * the packet and byte counters for 'rule' will be credited for the packet sent
1966 * out whether or not the packet actually matches 'rule'.
1968 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1969 * the caller must already have accurately composed ODP actions for it given
1970 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1971 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1972 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1973 * actions and apply them to 'packet'.
1975 * Takes ownership of 'packet'. */
1977 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1978 struct ofpbuf
*packet
, const struct flow
*flow
)
1980 const union odp_action
*actions
;
1981 struct odp_flow_stats stats
;
1983 struct odp_actions a
;
1985 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
1987 /* Grab or compose the ODP actions.
1989 * The special case for an exact-match 'rule' where 'flow' is not the
1990 * rule's flow is important to avoid, e.g., sending a packet out its input
1991 * port simply because the ODP actions were composed for the wrong
1993 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1994 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1995 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1996 packet
, &a
, NULL
, 0, NULL
)) {
1997 ofpbuf_delete(packet
);
2000 actions
= a
.actions
;
2001 n_actions
= a
.n_actions
;
2003 actions
= rule
->odp_actions
;
2004 n_actions
= rule
->n_odp_actions
;
2007 /* Execute the ODP actions. */
2008 flow_extract_stats(flow
, packet
, &stats
);
2009 if (execute_odp_actions(ofproto
, flow
->in_port
,
2010 actions
, n_actions
, packet
)) {
2011 update_stats(ofproto
, rule
, &stats
);
2012 rule
->used
= time_msec();
2013 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
2017 /* Inserts 'rule' into 'p''s flow table.
2019 * If 'packet' is nonnull, takes ownership of 'packet', executes 'rule''s
2020 * actions on it and credits the statistics for sending the packet to 'rule'.
2021 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of
2024 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
2027 struct rule
*displaced_rule
;
2029 /* Insert the rule in the classifier. */
2030 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
2031 if (!rule
->cr
.wc
.wildcards
) {
2032 rule_make_actions(p
, rule
, packet
);
2035 /* Send the packet and credit it to the rule. */
2038 flow_extract(packet
, 0, in_port
, &flow
);
2039 rule_execute(p
, rule
, packet
, &flow
);
2042 /* Install the rule in the datapath only after sending the packet, to
2043 * avoid packet reordering. */
2044 if (rule
->cr
.wc
.wildcards
) {
2045 COVERAGE_INC(ofproto_add_wc_flow
);
2046 p
->need_revalidate
= true;
2048 rule_install(p
, rule
, displaced_rule
);
2051 /* Free the rule that was displaced, if any. */
2052 if (displaced_rule
) {
2053 rule_destroy(p
, displaced_rule
);
2057 static struct rule
*
2058 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
2059 const struct flow
*flow
)
2061 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
2062 rule
->idle_timeout
, rule
->hard_timeout
,
2064 COVERAGE_INC(ofproto_subrule_create
);
2065 cls_rule_from_flow(flow
, 0, (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
2066 : rule
->cr
.priority
), &subrule
->cr
);
2068 if (classifier_insert(&ofproto
->cls
, &subrule
->cr
)) {
2076 /* Remove 'rule' from 'ofproto' and free up the associated memory:
2078 * - If 'rule' was installed in the datapath, uninstalls it and updates
2079 * 'rule''s statistics (or its super-rule's statistics, if it is a
2080 * subrule), via rule_uninstall().
2082 * - Removes 'rule' from the classifier.
2084 * - If 'rule' is a super-rule that has subrules, revalidates (and possibly
2085 * uninstalls and destroys) its subrules, via rule_destroy().
2088 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2090 if (rule
->cr
.wc
.wildcards
) {
2091 COVERAGE_INC(ofproto_del_wc_flow
);
2092 ofproto
->need_revalidate
= true;
2094 rule_uninstall(ofproto
, rule
);
2096 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2097 rule_destroy(ofproto
, rule
);
2100 /* Returns true if the actions changed, false otherwise. */
2102 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
2103 const struct ofpbuf
*packet
)
2105 const struct rule
*super
;
2106 struct odp_actions a
;
2109 assert(!rule
->cr
.wc
.wildcards
);
2111 super
= rule
->super
? rule
->super
: rule
;
2113 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
2114 packet
, &a
, &rule
->tags
, &rule
->may_install
,
2115 &rule
->nf_flow
.output_iface
);
2117 actions_len
= a
.n_actions
* sizeof *a
.actions
;
2118 if (rule
->n_odp_actions
!= a
.n_actions
2119 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
2120 COVERAGE_INC(ofproto_odp_unchanged
);
2121 free(rule
->odp_actions
);
2122 rule
->n_odp_actions
= a
.n_actions
;
2123 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
2131 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
2132 struct odp_flow_put
*put
)
2134 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
2135 odp_flow_key_from_flow(&put
->flow
.key
, &rule
->cr
.flow
);
2136 put
->flow
.actions
= rule
->odp_actions
;
2137 put
->flow
.n_actions
= rule
->n_odp_actions
;
2138 put
->flow
.flags
= 0;
2140 return dpif_flow_put(ofproto
->dpif
, put
);
2144 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
2146 assert(!rule
->cr
.wc
.wildcards
);
2148 if (rule
->may_install
) {
2149 struct odp_flow_put put
;
2150 if (!do_put_flow(p
, rule
,
2151 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
2153 rule
->installed
= true;
2154 if (displaced_rule
) {
2155 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
2156 rule_post_uninstall(p
, displaced_rule
);
2159 } else if (displaced_rule
) {
2160 rule_uninstall(p
, displaced_rule
);
2165 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
2167 if (rule
->installed
) {
2168 struct odp_flow_put put
;
2169 COVERAGE_INC(ofproto_dp_missed
);
2170 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
2172 rule_install(ofproto
, rule
, NULL
);
2177 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
2179 bool actions_changed
;
2180 uint16_t new_out_iface
, old_out_iface
;
2182 old_out_iface
= rule
->nf_flow
.output_iface
;
2183 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
2185 if (rule
->may_install
) {
2186 if (rule
->installed
) {
2187 if (actions_changed
) {
2188 struct odp_flow_put put
;
2189 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
2190 | ODPPF_ZERO_STATS
, &put
);
2191 update_stats(ofproto
, rule
, &put
.flow
.stats
);
2193 /* Temporarily set the old output iface so that NetFlow
2194 * messages have the correct output interface for the old
2196 new_out_iface
= rule
->nf_flow
.output_iface
;
2197 rule
->nf_flow
.output_iface
= old_out_iface
;
2198 rule_post_uninstall(ofproto
, rule
);
2199 rule
->nf_flow
.output_iface
= new_out_iface
;
2202 rule_install(ofproto
, rule
, NULL
);
2205 rule_uninstall(ofproto
, rule
);
2210 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
2212 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
2214 if (ofproto
->ofhooks
->account_flow_cb
2215 && total_bytes
> rule
->accounted_bytes
)
2217 ofproto
->ofhooks
->account_flow_cb(
2218 &rule
->cr
.flow
, rule
->tags
, rule
->odp_actions
, rule
->n_odp_actions
,
2219 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
2220 rule
->accounted_bytes
= total_bytes
;
2224 /* 'rule' must be an exact-match rule in 'p'.
2226 * If 'rule' is installed in the datapath, uninstalls it and updates's
2227 * statistics. If 'rule' is a subrule, the statistics that are updated are
2228 * actually its super-rule's statistics; otherwise 'rule''s own statistics are
2231 * If 'rule' is not installed, this function has no effect. */
2233 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
2235 assert(!rule
->cr
.wc
.wildcards
);
2236 if (rule
->installed
) {
2237 struct odp_flow odp_flow
;
2239 odp_flow_key_from_flow(&odp_flow
.key
, &rule
->cr
.flow
);
2240 odp_flow
.actions
= NULL
;
2241 odp_flow
.n_actions
= 0;
2243 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2244 update_stats(p
, rule
, &odp_flow
.stats
);
2246 rule
->installed
= false;
2248 rule_post_uninstall(p
, rule
);
2253 is_controller_rule(struct rule
*rule
)
2255 /* If the only action is send to the controller then don't report
2256 * NetFlow expiration messages since it is just part of the control
2257 * logic for the network and not real traffic. */
2261 && rule
->super
->n_actions
== 1
2262 && action_outputs_to_port(&rule
->super
->actions
[0],
2263 htons(OFPP_CONTROLLER
)));
2267 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
2269 struct rule
*super
= rule
->super
;
2271 rule_account(ofproto
, rule
, 0);
2273 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
2274 struct ofexpired expired
;
2275 expired
.flow
= rule
->cr
.flow
;
2276 expired
.packet_count
= rule
->packet_count
;
2277 expired
.byte_count
= rule
->byte_count
;
2278 expired
.used
= rule
->used
;
2279 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
2282 super
->packet_count
+= rule
->packet_count
;
2283 super
->byte_count
+= rule
->byte_count
;
2285 /* Reset counters to prevent double counting if the rule ever gets
2287 rule
->packet_count
= 0;
2288 rule
->byte_count
= 0;
2289 rule
->accounted_bytes
= 0;
2291 netflow_flow_clear(&rule
->nf_flow
);
2296 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2297 struct rconn_packet_counter
*counter
)
2299 update_openflow_length(msg
);
2300 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2306 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2307 int error
, const void *data
, size_t len
)
2310 struct ofp_error_msg
*oem
;
2312 if (!(error
>> 16)) {
2313 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
2318 COVERAGE_INC(ofproto_error
);
2319 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
2320 oh
? oh
->xid
: 0, &buf
);
2321 oem
->type
= htons((unsigned int) error
>> 16);
2322 oem
->code
= htons(error
& 0xffff);
2323 memcpy(oem
->data
, data
, len
);
2324 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2328 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2331 size_t oh_length
= ntohs(oh
->length
);
2332 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
2336 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2338 opp
->port_no
= htons(opp
->port_no
);
2339 opp
->config
= htonl(opp
->config
);
2340 opp
->state
= htonl(opp
->state
);
2341 opp
->curr
= htonl(opp
->curr
);
2342 opp
->advertised
= htonl(opp
->advertised
);
2343 opp
->supported
= htonl(opp
->supported
);
2344 opp
->peer
= htonl(opp
->peer
);
2348 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2350 struct ofp_header
*rq
= oh
;
2351 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
2356 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2357 struct ofp_header
*oh
)
2359 struct ofp_switch_features
*osf
;
2361 struct ofport
*port
;
2363 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2364 osf
->datapath_id
= htonll(p
->datapath_id
);
2365 osf
->n_buffers
= htonl(pktbuf_capacity());
2367 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2368 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2369 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2370 (1u << OFPAT_SET_VLAN_VID
) |
2371 (1u << OFPAT_SET_VLAN_PCP
) |
2372 (1u << OFPAT_STRIP_VLAN
) |
2373 (1u << OFPAT_SET_DL_SRC
) |
2374 (1u << OFPAT_SET_DL_DST
) |
2375 (1u << OFPAT_SET_NW_SRC
) |
2376 (1u << OFPAT_SET_NW_DST
) |
2377 (1u << OFPAT_SET_NW_TOS
) |
2378 (1u << OFPAT_SET_TP_SRC
) |
2379 (1u << OFPAT_SET_TP_DST
) |
2380 (1u << OFPAT_ENQUEUE
));
2382 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2383 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2386 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2391 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2392 struct ofp_header
*oh
)
2395 struct ofp_switch_config
*osc
;
2399 /* Figure out flags. */
2400 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
2401 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2404 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2405 osc
->flags
= htons(flags
);
2406 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2407 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2413 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
2414 struct ofp_switch_config
*osc
)
2419 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
2423 flags
= ntohs(osc
->flags
);
2425 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2426 switch (flags
& OFPC_FRAG_MASK
) {
2427 case OFPC_FRAG_NORMAL
:
2428 dpif_set_drop_frags(p
->dpif
, false);
2430 case OFPC_FRAG_DROP
:
2431 dpif_set_drop_frags(p
->dpif
, true);
2434 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2440 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2446 add_controller_action(struct odp_actions
*actions
, uint16_t max_len
)
2448 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
2449 a
->controller
.arg
= max_len
;
2452 struct action_xlate_ctx
{
2454 struct flow flow
; /* Flow to which these actions correspond. */
2455 int recurse
; /* Recursion level, via xlate_table_action. */
2456 struct ofproto
*ofproto
;
2457 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2458 * null pointer if we are revalidating
2459 * without a packet to refer to. */
2462 struct odp_actions
*out
; /* Datapath actions. */
2463 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2464 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2465 * be reassessed for every packet. */
2466 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2469 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2470 * flow translation. */
2471 #define MAX_RESUBMIT_RECURSION 8
2473 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2474 struct action_xlate_ctx
*ctx
);
2477 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2479 const struct ofport
*ofport
= get_port(ctx
->ofproto
, port
);
2482 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2483 /* Forwarding disabled on port. */
2488 * We don't have an ofport record for this port, but it doesn't hurt to
2489 * allow forwarding to it anyhow. Maybe such a port will appear later
2490 * and we're pre-populating the flow table.
2494 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2495 ctx
->nf_output_iface
= port
;
2498 static struct rule
*
2499 lookup_valid_rule(struct ofproto
*ofproto
, const struct flow
*flow
)
2502 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2504 /* The rule we found might not be valid, since we could be in need of
2505 * revalidation. If it is not valid, don't return it. */
2508 && ofproto
->need_revalidate
2509 && !revalidate_rule(ofproto
, rule
)) {
2510 COVERAGE_INC(ofproto_invalidated
);
2518 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2520 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2521 uint16_t old_in_port
;
2524 /* Look up a flow with 'in_port' as the input port. Then restore the
2525 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2526 * have surprising behavior). */
2527 old_in_port
= ctx
->flow
.in_port
;
2528 ctx
->flow
.in_port
= in_port
;
2529 rule
= lookup_valid_rule(ctx
->ofproto
, &ctx
->flow
);
2530 ctx
->flow
.in_port
= old_in_port
;
2538 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2542 struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2544 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2545 MAX_RESUBMIT_RECURSION
);
2550 flood_packets(struct ofproto
*ofproto
, uint16_t odp_in_port
, uint32_t mask
,
2551 uint16_t *nf_output_iface
, struct odp_actions
*actions
)
2553 struct ofport
*ofport
;
2555 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
2556 uint16_t odp_port
= ofport
->odp_port
;
2557 if (odp_port
!= odp_in_port
&& !(ofport
->opp
.config
& mask
)) {
2558 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= odp_port
;
2561 *nf_output_iface
= NF_OUT_FLOOD
;
2565 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2566 uint16_t port
, uint16_t max_len
)
2569 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2571 ctx
->nf_output_iface
= NF_OUT_DROP
;
2575 add_output_action(ctx
, ctx
->flow
.in_port
);
2578 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2581 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2582 ctx
->out
, ctx
->tags
,
2583 &ctx
->nf_output_iface
,
2584 ctx
->ofproto
->aux
)) {
2585 COVERAGE_INC(ofproto_uninstallable
);
2586 ctx
->may_set_up_flow
= false;
2590 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, OFPPC_NO_FLOOD
,
2591 &ctx
->nf_output_iface
, ctx
->out
);
2594 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, 0,
2595 &ctx
->nf_output_iface
, ctx
->out
);
2597 case OFPP_CONTROLLER
:
2598 add_controller_action(ctx
->out
, max_len
);
2601 add_output_action(ctx
, ODPP_LOCAL
);
2604 odp_port
= ofp_port_to_odp_port(port
);
2605 if (odp_port
!= ctx
->flow
.in_port
) {
2606 add_output_action(ctx
, odp_port
);
2611 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2612 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2613 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2614 ctx
->nf_output_iface
= prev_nf_output_iface
;
2615 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2616 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2617 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2622 xlate_output_action(struct action_xlate_ctx
*ctx
,
2623 const struct ofp_action_output
*oao
)
2625 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2628 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2629 * optimization, because we're going to add another action that sets the
2630 * priority immediately after, or because there are no actions following the
2633 remove_pop_action(struct action_xlate_ctx
*ctx
)
2635 size_t n
= ctx
->out
->n_actions
;
2636 if (n
> 0 && ctx
->out
->actions
[n
- 1].type
== ODPAT_POP_PRIORITY
) {
2637 ctx
->out
->n_actions
--;
2642 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2643 const struct ofp_action_enqueue
*oae
)
2645 uint16_t ofp_port
, odp_port
;
2649 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2652 /* Fall back to ordinary output action. */
2653 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2657 /* Figure out ODP output port. */
2658 ofp_port
= ntohs(oae
->port
);
2659 if (ofp_port
!= OFPP_IN_PORT
) {
2660 odp_port
= ofp_port_to_odp_port(ofp_port
);
2662 odp_port
= ctx
->flow
.in_port
;
2665 /* Add ODP actions. */
2666 remove_pop_action(ctx
);
2667 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2669 add_output_action(ctx
, odp_port
);
2670 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2672 /* Update NetFlow output port. */
2673 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2674 ctx
->nf_output_iface
= odp_port
;
2675 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2676 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2681 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
2682 const struct nx_action_set_queue
*nasq
)
2687 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
2690 /* Couldn't translate queue to a priority, so ignore. A warning
2691 * has already been logged. */
2695 remove_pop_action(ctx
);
2696 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2701 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2702 const struct nx_action_header
*nah
)
2704 const struct nx_action_resubmit
*nar
;
2705 const struct nx_action_set_tunnel
*nast
;
2706 const struct nx_action_set_queue
*nasq
;
2707 union odp_action
*oa
;
2708 int subtype
= ntohs(nah
->subtype
);
2710 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2712 case NXAST_RESUBMIT
:
2713 nar
= (const struct nx_action_resubmit
*) nah
;
2714 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2717 case NXAST_SET_TUNNEL
:
2718 nast
= (const struct nx_action_set_tunnel
*) nah
;
2719 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2720 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2723 case NXAST_DROP_SPOOFED_ARP
:
2724 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_ARP
)) {
2725 odp_actions_add(ctx
->out
, ODPAT_DROP_SPOOFED_ARP
);
2729 case NXAST_SET_QUEUE
:
2730 nasq
= (const struct nx_action_set_queue
*) nah
;
2731 xlate_set_queue_action(ctx
, nasq
);
2734 case NXAST_POP_QUEUE
:
2735 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2738 /* If you add a new action here that modifies flow data, don't forget to
2739 * update the flow key in ctx->flow at the same time. */
2742 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2748 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2749 struct action_xlate_ctx
*ctx
)
2751 struct actions_iterator iter
;
2752 const union ofp_action
*ia
;
2753 const struct ofport
*port
;
2755 port
= get_port(ctx
->ofproto
, ctx
->flow
.in_port
);
2756 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2757 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
2758 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2759 /* Drop this flow. */
2763 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2764 uint16_t type
= ntohs(ia
->type
);
2765 union odp_action
*oa
;
2769 xlate_output_action(ctx
, &ia
->output
);
2772 case OFPAT_SET_VLAN_VID
:
2773 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_TCI
);
2774 oa
->dl_tci
.tci
= ia
->vlan_vid
.vlan_vid
;
2775 oa
->dl_tci
.tci
|= htons(ctx
->flow
.dl_vlan_pcp
<< VLAN_PCP_SHIFT
);
2776 ctx
->flow
.dl_vlan
= ia
->vlan_vid
.vlan_vid
;
2779 case OFPAT_SET_VLAN_PCP
:
2780 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_TCI
);
2781 oa
->dl_tci
.tci
= htons(ia
->vlan_pcp
.vlan_pcp
<< VLAN_PCP_SHIFT
);
2782 oa
->dl_tci
.tci
|= ctx
->flow
.dl_vlan
;
2783 ctx
->flow
.dl_vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2786 case OFPAT_STRIP_VLAN
:
2787 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2788 ctx
->flow
.dl_vlan
= htons(OFP_VLAN_NONE
);
2789 ctx
->flow
.dl_vlan_pcp
= 0;
2792 case OFPAT_SET_DL_SRC
:
2793 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2794 memcpy(oa
->dl_addr
.dl_addr
,
2795 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2796 memcpy(ctx
->flow
.dl_src
,
2797 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2800 case OFPAT_SET_DL_DST
:
2801 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2802 memcpy(oa
->dl_addr
.dl_addr
,
2803 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2804 memcpy(ctx
->flow
.dl_dst
,
2805 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2808 case OFPAT_SET_NW_SRC
:
2809 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2810 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2813 case OFPAT_SET_NW_DST
:
2814 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2815 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2818 case OFPAT_SET_NW_TOS
:
2819 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2820 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2823 case OFPAT_SET_TP_SRC
:
2824 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2825 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2828 case OFPAT_SET_TP_DST
:
2829 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2830 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2834 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2838 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
2842 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2849 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2850 const struct flow
*flow
, struct ofproto
*ofproto
,
2851 const struct ofpbuf
*packet
,
2852 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2853 uint16_t *nf_output_iface
)
2855 tag_type no_tags
= 0;
2856 struct action_xlate_ctx ctx
;
2857 COVERAGE_INC(ofproto_ofp2odp
);
2858 odp_actions_init(out
);
2861 ctx
.ofproto
= ofproto
;
2862 ctx
.packet
= packet
;
2864 ctx
.tags
= tags
? tags
: &no_tags
;
2865 ctx
.may_set_up_flow
= true;
2866 ctx
.nf_output_iface
= NF_OUT_DROP
;
2867 do_xlate_actions(in
, n_in
, &ctx
);
2868 remove_pop_action(&ctx
);
2870 /* Check with in-band control to see if we're allowed to set up this
2872 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2873 ctx
.may_set_up_flow
= false;
2876 if (may_set_up_flow
) {
2877 *may_set_up_flow
= ctx
.may_set_up_flow
;
2879 if (nf_output_iface
) {
2880 *nf_output_iface
= ctx
.nf_output_iface
;
2882 if (odp_actions_overflow(out
)) {
2883 COVERAGE_INC(odp_overflow
);
2884 odp_actions_init(out
);
2885 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2890 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2891 * error message code (composed with ofp_mkerr()) for the caller to propagate
2892 * upward. Otherwise, returns 0.
2894 * 'oh' is used to make log messages more informative. */
2896 reject_slave_controller(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2898 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
2899 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2902 type_name
= ofp_message_type_to_string(oh
->type
);
2903 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
2907 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
2914 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2915 struct ofp_header
*oh
)
2917 struct ofp_packet_out
*opo
;
2918 struct ofpbuf payload
, *buffer
;
2919 struct odp_actions actions
;
2925 error
= reject_slave_controller(ofconn
, oh
);
2930 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2934 opo
= (struct ofp_packet_out
*) oh
;
2936 COVERAGE_INC(ofproto_packet_out
);
2937 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2938 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2940 if (error
|| !buffer
) {
2948 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2949 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2950 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2952 dpif_execute(p
->dpif
, actions
.actions
, actions
.n_actions
, &payload
);
2954 ofpbuf_delete(buffer
);
2960 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2961 uint32_t config
, uint32_t mask
)
2963 mask
&= config
^ port
->opp
.config
;
2964 if (mask
& OFPPC_PORT_DOWN
) {
2965 if (config
& OFPPC_PORT_DOWN
) {
2966 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2968 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2971 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
2972 OFPPC_NO_FWD | OFPPC_NO_FLOOD)
2973 if (mask
& REVALIDATE_BITS
) {
2974 COVERAGE_INC(ofproto_costly_flags
);
2975 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2976 p
->need_revalidate
= true;
2978 #undef REVALIDATE_BITS
2979 if (mask
& OFPPC_NO_PACKET_IN
) {
2980 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2985 handle_port_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2986 struct ofp_header
*oh
)
2988 const struct ofp_port_mod
*opm
;
2989 struct ofport
*port
;
2992 error
= reject_slave_controller(ofconn
, oh
);
2996 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
3000 opm
= (struct ofp_port_mod
*) oh
;
3002 port
= get_port(p
, ofp_port_to_odp_port(ntohs(opm
->port_no
)));
3004 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
3005 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
3006 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
3008 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
3009 if (opm
->advertise
) {
3010 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
3016 static struct ofpbuf
*
3017 make_stats_reply(ovs_be32 xid
, ovs_be16 type
, size_t body_len
)
3019 struct ofp_stats_reply
*osr
;
3022 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
3023 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
3025 osr
->flags
= htons(0);
3029 static struct ofpbuf
*
3030 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
3032 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
3036 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
3038 struct ofpbuf
*msg
= *msgp
;
3039 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
3040 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3041 struct ofp_stats_reply
*reply
= msg
->data
;
3042 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3043 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
3044 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3046 return ofpbuf_put_uninit(*msgp
, nbytes
);
3050 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3051 struct ofp_stats_request
*request
)
3053 struct ofp_desc_stats
*ods
;
3056 msg
= start_stats_reply(request
, sizeof *ods
);
3057 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
3058 memset(ods
, 0, sizeof *ods
);
3059 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
3060 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
3061 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
3062 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
3063 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
3064 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3070 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3071 struct ofp_stats_request
*request
)
3073 struct ofp_table_stats
*ots
;
3075 struct odp_stats dpstats
;
3076 int n_exact
, n_subrules
, n_wild
;
3079 msg
= start_stats_reply(request
, sizeof *ots
* 2);
3081 /* Count rules of various kinds. */
3083 CLASSIFIER_FOR_EACH_EXACT_RULE (rule
, cr
, &p
->cls
) {
3088 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
3089 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
3092 dpif_get_dp_stats(p
->dpif
, &dpstats
);
3093 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
3094 memset(ots
, 0, sizeof *ots
);
3095 ots
->table_id
= TABLEID_HASH
;
3096 strcpy(ots
->name
, "hash");
3097 ots
->wildcards
= htonl(0);
3098 ots
->max_entries
= htonl(dpstats
.max_capacity
);
3099 ots
->active_count
= htonl(n_exact
);
3100 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
3102 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
3104 /* Classifier table. */
3105 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
3106 memset(ots
, 0, sizeof *ots
);
3107 ots
->table_id
= TABLEID_CLASSIFIER
;
3108 strcpy(ots
->name
, "classifier");
3109 ots
->wildcards
= p
->tun_id_from_cookie
? htonl(OVSFW_ALL
)
3111 ots
->max_entries
= htonl(65536);
3112 ots
->active_count
= htonl(n_wild
);
3113 ots
->lookup_count
= htonll(0); /* XXX */
3114 ots
->matched_count
= htonll(0); /* XXX */
3116 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3121 append_port_stat(struct ofport
*port
, struct ofconn
*ofconn
,
3122 struct ofpbuf
**msgp
)
3124 struct netdev_stats stats
;
3125 struct ofp_port_stats
*ops
;
3127 /* Intentionally ignore return value, since errors will set
3128 * 'stats' to all-1s, which is correct for OpenFlow, and
3129 * netdev_get_stats() will log errors. */
3130 netdev_get_stats(port
->netdev
, &stats
);
3132 ops
= append_stats_reply(sizeof *ops
, ofconn
, msgp
);
3133 ops
->port_no
= htons(port
->opp
.port_no
);
3134 memset(ops
->pad
, 0, sizeof ops
->pad
);
3135 ops
->rx_packets
= htonll(stats
.rx_packets
);
3136 ops
->tx_packets
= htonll(stats
.tx_packets
);
3137 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3138 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3139 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3140 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3141 ops
->rx_errors
= htonll(stats
.rx_errors
);
3142 ops
->tx_errors
= htonll(stats
.tx_errors
);
3143 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3144 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3145 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3146 ops
->collisions
= htonll(stats
.collisions
);
3150 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3151 struct ofp_stats_request
*osr
,
3154 struct ofp_port_stats_request
*psr
;
3155 struct ofp_port_stats
*ops
;
3157 struct ofport
*port
;
3159 if (arg_size
!= sizeof *psr
) {
3160 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3162 psr
= (struct ofp_port_stats_request
*) osr
->body
;
3164 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
3165 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3166 port
= get_port(p
, ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3168 append_port_stat(port
, ofconn
, &msg
);
3171 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3172 append_port_stat(port
, ofconn
, &msg
);
3176 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3180 struct flow_stats_cbdata
{
3181 struct ofproto
*ofproto
;
3182 struct ofconn
*ofconn
;
3187 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3188 * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the
3189 * returned statistic include statistics for all of 'rule''s subrules. */
3191 query_stats(struct ofproto
*p
, struct rule
*rule
,
3192 uint64_t *packet_countp
, uint64_t *byte_countp
)
3194 uint64_t packet_count
, byte_count
;
3195 struct rule
*subrule
;
3196 struct odp_flow
*odp_flows
;
3199 /* Start from historical data for 'rule' itself that are no longer tracked
3200 * by the datapath. This counts, for example, subrules that have
3202 packet_count
= rule
->packet_count
;
3203 byte_count
= rule
->byte_count
;
3205 /* Prepare to ask the datapath for statistics on 'rule', or if it is
3206 * wildcarded then on all of its subrules.
3208 * Also, add any statistics that are not tracked by the datapath for each
3209 * subrule. This includes, for example, statistics for packets that were
3210 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3212 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
3213 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
3214 if (rule
->cr
.wc
.wildcards
) {
3216 LIST_FOR_EACH (subrule
, list
, &rule
->list
) {
3217 odp_flow_key_from_flow(&odp_flows
[i
++].key
, &subrule
->cr
.flow
);
3218 packet_count
+= subrule
->packet_count
;
3219 byte_count
+= subrule
->byte_count
;
3222 odp_flow_key_from_flow(&odp_flows
[0].key
, &rule
->cr
.flow
);
3225 /* Fetch up-to-date statistics from the datapath and add them in. */
3226 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
3228 for (i
= 0; i
< n_odp_flows
; i
++) {
3229 struct odp_flow
*odp_flow
= &odp_flows
[i
];
3230 packet_count
+= odp_flow
->stats
.n_packets
;
3231 byte_count
+= odp_flow
->stats
.n_bytes
;
3236 /* Return the stats to the caller. */
3237 *packet_countp
= packet_count
;
3238 *byte_countp
= byte_count
;
3242 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3244 struct rule
*rule
= rule_from_cls_rule(rule_
);
3245 struct flow_stats_cbdata
*cbdata
= cbdata_
;
3246 struct ofp_flow_stats
*ofs
;
3247 uint64_t packet_count
, byte_count
;
3248 size_t act_len
, len
;
3249 long long int tdiff
= time_msec() - rule
->created
;
3250 uint32_t sec
= tdiff
/ 1000;
3251 uint32_t msec
= tdiff
- (sec
* 1000);
3253 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3257 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3258 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3260 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3262 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
3263 ofs
->length
= htons(len
);
3264 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
3266 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3267 cbdata
->ofproto
->tun_id_from_cookie
, &ofs
->match
);
3268 ofs
->duration_sec
= htonl(sec
);
3269 ofs
->duration_nsec
= htonl(msec
* 1000000);
3270 ofs
->cookie
= rule
->flow_cookie
;
3271 ofs
->priority
= htons(rule
->cr
.priority
);
3272 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3273 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3274 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3275 ofs
->packet_count
= htonll(packet_count
);
3276 ofs
->byte_count
= htonll(byte_count
);
3277 if (rule
->n_actions
> 0) {
3278 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3283 table_id_to_include(uint8_t table_id
)
3285 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
3286 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
3287 : table_id
== 0xff ? CLS_INC_ALL
3292 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3293 const struct ofp_stats_request
*osr
,
3296 struct ofp_flow_stats_request
*fsr
;
3297 struct flow_stats_cbdata cbdata
;
3298 struct cls_rule target
;
3300 if (arg_size
!= sizeof *fsr
) {
3301 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3303 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
3305 COVERAGE_INC(ofproto_flows_req
);
3307 cbdata
.ofconn
= ofconn
;
3308 cbdata
.out_port
= fsr
->out_port
;
3309 cbdata
.msg
= start_stats_reply(osr
, 1024);
3310 cls_rule_from_match(&fsr
->match
, 0, false, 0, &target
);
3311 classifier_for_each_match(&p
->cls
, &target
,
3312 table_id_to_include(fsr
->table_id
),
3313 flow_stats_cb
, &cbdata
);
3314 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3318 struct flow_stats_ds_cbdata
{
3319 struct ofproto
*ofproto
;
3324 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
3326 struct rule
*rule
= rule_from_cls_rule(rule_
);
3327 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
3328 struct ds
*results
= cbdata
->results
;
3329 struct ofp_match match
;
3330 uint64_t packet_count
, byte_count
;
3331 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3333 /* Don't report on subrules. */
3334 if (rule
->super
!= NULL
) {
3338 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3339 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3340 cbdata
->ofproto
->tun_id_from_cookie
, &match
);
3342 ds_put_format(results
, "duration=%llds, ",
3343 (time_msec() - rule
->created
) / 1000);
3344 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3345 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3346 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3347 ofp_print_match(results
, &match
, true);
3349 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3351 ds_put_cstr(results
, "drop");
3353 ds_put_cstr(results
, "\n");
3356 /* Adds a pretty-printed description of all flows to 'results', including
3357 * those marked hidden by secchan (e.g., by in-band control). */
3359 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3361 struct ofp_match match
;
3362 struct cls_rule target
;
3363 struct flow_stats_ds_cbdata cbdata
;
3365 memset(&match
, 0, sizeof match
);
3366 match
.wildcards
= htonl(OVSFW_ALL
);
3369 cbdata
.results
= results
;
3371 cls_rule_from_match(&match
, 0, false, 0, &target
);
3372 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3373 flow_stats_ds_cb
, &cbdata
);
3376 struct aggregate_stats_cbdata
{
3377 struct ofproto
*ofproto
;
3379 uint64_t packet_count
;
3380 uint64_t byte_count
;
3385 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3387 struct rule
*rule
= rule_from_cls_rule(rule_
);
3388 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
3389 uint64_t packet_count
, byte_count
;
3391 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3395 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3397 cbdata
->packet_count
+= packet_count
;
3398 cbdata
->byte_count
+= byte_count
;
3403 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3404 const struct ofp_stats_request
*osr
,
3407 struct ofp_aggregate_stats_request
*asr
;
3408 struct ofp_aggregate_stats_reply
*reply
;
3409 struct aggregate_stats_cbdata cbdata
;
3410 struct cls_rule target
;
3413 if (arg_size
!= sizeof *asr
) {
3414 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3416 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
3418 COVERAGE_INC(ofproto_agg_request
);
3420 cbdata
.out_port
= asr
->out_port
;
3421 cbdata
.packet_count
= 0;
3422 cbdata
.byte_count
= 0;
3424 cls_rule_from_match(&asr
->match
, 0, false, 0, &target
);
3425 classifier_for_each_match(&p
->cls
, &target
,
3426 table_id_to_include(asr
->table_id
),
3427 aggregate_stats_cb
, &cbdata
);
3429 msg
= start_stats_reply(osr
, sizeof *reply
);
3430 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
3431 reply
->flow_count
= htonl(cbdata
.n_flows
);
3432 reply
->packet_count
= htonll(cbdata
.packet_count
);
3433 reply
->byte_count
= htonll(cbdata
.byte_count
);
3434 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3438 struct queue_stats_cbdata
{
3439 struct ofconn
*ofconn
;
3440 struct ofport
*ofport
;
3445 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3446 const struct netdev_queue_stats
*stats
)
3448 struct ofp_queue_stats
*reply
;
3450 reply
= append_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3451 reply
->port_no
= htons(cbdata
->ofport
->opp
.port_no
);
3452 memset(reply
->pad
, 0, sizeof reply
->pad
);
3453 reply
->queue_id
= htonl(queue_id
);
3454 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3455 reply
->tx_packets
= htonll(stats
->tx_packets
);
3456 reply
->tx_errors
= htonll(stats
->tx_errors
);
3460 handle_queue_stats_dump_cb(uint32_t queue_id
,
3461 struct netdev_queue_stats
*stats
,
3464 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3466 put_queue_stats(cbdata
, queue_id
, stats
);
3470 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3471 struct queue_stats_cbdata
*cbdata
)
3473 cbdata
->ofport
= port
;
3474 if (queue_id
== OFPQ_ALL
) {
3475 netdev_dump_queue_stats(port
->netdev
,
3476 handle_queue_stats_dump_cb
, cbdata
);
3478 struct netdev_queue_stats stats
;
3480 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3481 put_queue_stats(cbdata
, queue_id
, &stats
);
3487 handle_queue_stats_request(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3488 const struct ofp_stats_request
*osr
,
3491 struct ofp_queue_stats_request
*qsr
;
3492 struct queue_stats_cbdata cbdata
;
3493 struct ofport
*port
;
3494 unsigned int port_no
;
3497 if (arg_size
!= sizeof *qsr
) {
3498 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3500 qsr
= (struct ofp_queue_stats_request
*) osr
->body
;
3502 COVERAGE_INC(ofproto_queue_req
);
3504 cbdata
.ofconn
= ofconn
;
3505 cbdata
.msg
= start_stats_reply(osr
, 128);
3507 port_no
= ntohs(qsr
->port_no
);
3508 queue_id
= ntohl(qsr
->queue_id
);
3509 if (port_no
== OFPP_ALL
) {
3510 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3511 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3513 } else if (port_no
< ofproto
->max_ports
) {
3514 port
= get_port(ofproto
, ofp_port_to_odp_port(port_no
));
3516 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3519 ofpbuf_delete(cbdata
.msg
);
3520 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3522 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3528 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3529 struct ofp_header
*oh
)
3531 struct ofp_stats_request
*osr
;
3535 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
3540 osr
= (struct ofp_stats_request
*) oh
;
3542 switch (ntohs(osr
->type
)) {
3544 return handle_desc_stats_request(p
, ofconn
, osr
);
3547 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
3549 case OFPST_AGGREGATE
:
3550 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
3553 return handle_table_stats_request(p
, ofconn
, osr
);
3556 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
3559 return handle_queue_stats_request(p
, ofconn
, osr
, arg_size
);
3562 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3565 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
3569 static long long int
3570 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3572 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3576 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
3577 const struct odp_flow_stats
*stats
)
3579 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3580 if (used
> rule
->used
) {
3582 if (rule
->super
&& used
> rule
->super
->used
) {
3583 rule
->super
->used
= used
;
3585 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
3590 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
3591 const struct odp_flow_stats
*stats
)
3593 if (stats
->n_packets
) {
3594 update_time(ofproto
, rule
, stats
);
3595 rule
->packet_count
+= stats
->n_packets
;
3596 rule
->byte_count
+= stats
->n_bytes
;
3597 netflow_flow_update_flags(&rule
->nf_flow
, stats
->tcp_flags
);
3601 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3602 * in which no matching flow already exists in the flow table.
3604 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3605 * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
3606 * code as encoded by ofp_mkerr() on failure.
3608 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3611 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
3612 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3614 struct ofpbuf
*packet
;
3619 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
3623 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3625 if (classifier_rule_overlaps(&p
->cls
, &flow
, wildcards
,
3626 ntohs(ofm
->priority
))) {
3627 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3631 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
3632 n_actions
, ntohs(ofm
->idle_timeout
),
3633 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
3634 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
3635 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3636 p
->tun_id_from_cookie
, ofm
->cookie
, &rule
->cr
);
3639 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
3640 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3644 in_port
= UINT16_MAX
;
3647 rule_insert(p
, rule
, packet
, in_port
);
3651 static struct rule
*
3652 find_flow_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3657 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3659 return rule_from_cls_rule(classifier_find_rule_exactly(
3660 &p
->cls
, &flow
, wildcards
,
3661 ntohs(ofm
->priority
)));
3665 send_buffered_packet(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3666 struct rule
*rule
, const struct ofp_flow_mod
*ofm
)
3668 struct ofpbuf
*packet
;
3673 if (ofm
->buffer_id
== htonl(UINT32_MAX
)) {
3677 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3683 flow_extract(packet
, 0, in_port
, &flow
);
3684 rule_execute(ofproto
, rule
, packet
, &flow
);
3689 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3691 struct modify_flows_cbdata
{
3692 struct ofproto
*ofproto
;
3693 const struct ofp_flow_mod
*ofm
;
3698 static int modify_flow(struct ofproto
*, const struct ofp_flow_mod
*,
3699 size_t n_actions
, struct rule
*);
3700 static void modify_flows_cb(struct cls_rule
*, void *cbdata_
);
3702 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3703 * encoded by ofp_mkerr() on failure.
3705 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3708 modify_flows_loose(struct ofproto
*p
, struct ofconn
*ofconn
,
3709 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3711 struct modify_flows_cbdata cbdata
;
3712 struct cls_rule target
;
3716 cbdata
.n_actions
= n_actions
;
3717 cbdata
.match
= NULL
;
3719 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3722 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3723 modify_flows_cb
, &cbdata
);
3725 /* This credits the packet to whichever flow happened to happened to
3726 * match last. That's weird. Maybe we should do a lookup for the
3727 * flow that actually matches the packet? Who knows. */
3728 send_buffered_packet(p
, ofconn
, cbdata
.match
, ofm
);
3731 return add_flow(p
, ofconn
, ofm
, n_actions
);
3735 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3736 * code as encoded by ofp_mkerr() on failure.
3738 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3741 modify_flow_strict(struct ofproto
*p
, struct ofconn
*ofconn
,
3742 struct ofp_flow_mod
*ofm
, size_t n_actions
)
3744 struct rule
*rule
= find_flow_strict(p
, ofm
);
3745 if (rule
&& !rule_is_hidden(rule
)) {
3746 modify_flow(p
, ofm
, n_actions
, rule
);
3747 return send_buffered_packet(p
, ofconn
, rule
, ofm
);
3749 return add_flow(p
, ofconn
, ofm
, n_actions
);
3753 /* Callback for modify_flows_loose(). */
3755 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3757 struct rule
*rule
= rule_from_cls_rule(rule_
);
3758 struct modify_flows_cbdata
*cbdata
= cbdata_
;
3760 if (!rule_is_hidden(rule
)) {
3761 cbdata
->match
= rule
;
3762 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
, rule
);
3766 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3767 * been identified as a flow in 'p''s flow table to be modified, by changing
3768 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3769 * ofp_action[] structures). */
3771 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
3772 size_t n_actions
, struct rule
*rule
)
3774 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
3776 rule
->flow_cookie
= ofm
->cookie
;
3778 /* If the actions are the same, do nothing. */
3779 if (n_actions
== rule
->n_actions
3780 && (!n_actions
|| !memcmp(ofm
->actions
, rule
->actions
, actions_len
)))
3785 /* Replace actions. */
3786 free(rule
->actions
);
3787 rule
->actions
= n_actions
? xmemdup(ofm
->actions
, actions_len
) : NULL
;
3788 rule
->n_actions
= n_actions
;
3790 /* Make sure that the datapath gets updated properly. */
3791 if (rule
->cr
.wc
.wildcards
) {
3792 COVERAGE_INC(ofproto_mod_wc_flow
);
3793 p
->need_revalidate
= true;
3795 rule_update_actions(p
, rule
);
3801 /* OFPFC_DELETE implementation. */
3803 struct delete_flows_cbdata
{
3804 struct ofproto
*ofproto
;
3808 static void delete_flows_cb(struct cls_rule
*, void *cbdata_
);
3809 static void delete_flow(struct ofproto
*, struct rule
*, ovs_be16 out_port
);
3811 /* Implements OFPFC_DELETE. */
3813 delete_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3815 struct delete_flows_cbdata cbdata
;
3816 struct cls_rule target
;
3819 cbdata
.out_port
= ofm
->out_port
;
3821 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3824 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3825 delete_flows_cb
, &cbdata
);
3828 /* Implements OFPFC_DELETE_STRICT. */
3830 delete_flow_strict(struct ofproto
*p
, struct ofp_flow_mod
*ofm
)
3832 struct rule
*rule
= find_flow_strict(p
, ofm
);
3834 delete_flow(p
, rule
, ofm
->out_port
);
3838 /* Callback for delete_flows_loose(). */
3840 delete_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3842 struct rule
*rule
= rule_from_cls_rule(rule_
);
3843 struct delete_flows_cbdata
*cbdata
= cbdata_
;
3845 delete_flow(cbdata
->ofproto
, rule
, cbdata
->out_port
);
3848 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
3849 * been identified as a flow to delete from 'p''s flow table, by deleting the
3850 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
3853 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
3854 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
3855 * specified 'out_port'. */
3857 delete_flow(struct ofproto
*p
, struct rule
*rule
, ovs_be16 out_port
)
3859 if (rule_is_hidden(rule
)) {
3863 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
3867 send_flow_removed(p
, rule
, time_msec(), OFPRR_DELETE
);
3868 rule_remove(p
, rule
);
3872 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3873 struct ofp_flow_mod
*ofm
)
3875 struct ofp_match orig_match
;
3879 error
= reject_slave_controller(ofconn
, &ofm
->header
);
3883 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3884 sizeof *ofm
->actions
, &n_actions
);
3889 /* We do not support the emergency flow cache. It will hopefully
3890 * get dropped from OpenFlow in the near future. */
3891 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3892 /* There isn't a good fit for an error code, so just state that the
3893 * flow table is full. */
3894 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3897 /* Normalize ofp->match. If normalization actually changes anything, then
3898 * log the differences. */
3899 ofm
->match
.pad1
[0] = ofm
->match
.pad2
[0] = 0;
3900 orig_match
= ofm
->match
;
3901 normalize_match(&ofm
->match
);
3902 if (memcmp(&ofm
->match
, &orig_match
, sizeof orig_match
)) {
3903 static struct vlog_rate_limit normal_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3904 if (!VLOG_DROP_INFO(&normal_rl
)) {
3905 char *old
= ofp_match_to_literal_string(&orig_match
);
3906 char *new = ofp_match_to_literal_string(&ofm
->match
);
3907 VLOG_INFO("%s: normalization changed ofp_match, details:",
3908 rconn_get_name(ofconn
->rconn
));
3909 VLOG_INFO(" pre: %s", old
);
3910 VLOG_INFO("post: %s", new);
3916 if (!ofm
->match
.wildcards
) {
3917 ofm
->priority
= htons(UINT16_MAX
);
3920 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3921 n_actions
, p
->max_ports
);
3926 switch (ntohs(ofm
->command
)) {
3928 return add_flow(p
, ofconn
, ofm
, n_actions
);
3931 return modify_flows_loose(p
, ofconn
, ofm
, n_actions
);
3933 case OFPFC_MODIFY_STRICT
:
3934 return modify_flow_strict(p
, ofconn
, ofm
, n_actions
);
3937 delete_flows_loose(p
, ofm
);
3940 case OFPFC_DELETE_STRICT
:
3941 delete_flow_strict(p
, ofm
);
3945 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3950 handle_tun_id_from_cookie(struct ofproto
*p
, struct nxt_tun_id_cookie
*msg
)
3954 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
3959 p
->tun_id_from_cookie
= !!msg
->set
;
3964 handle_role_request(struct ofproto
*ofproto
,
3965 struct ofconn
*ofconn
, struct nicira_header
*msg
)
3967 struct nx_role_request
*nrr
;
3968 struct nx_role_request
*reply
;
3972 if (ntohs(msg
->header
.length
) != sizeof *nrr
) {
3973 VLOG_WARN_RL(&rl
, "received role request of length %u (expected %zu)",
3974 ntohs(msg
->header
.length
), sizeof *nrr
);
3975 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3977 nrr
= (struct nx_role_request
*) msg
;
3979 if (ofconn
->type
!= OFCONN_PRIMARY
) {
3980 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
3982 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3985 role
= ntohl(nrr
->role
);
3986 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
3987 && role
!= NX_ROLE_SLAVE
) {
3988 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
3990 /* There's no good error code for this. */
3991 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
3994 if (role
== NX_ROLE_MASTER
) {
3995 struct ofconn
*other
;
3997 HMAP_FOR_EACH (other
, hmap_node
, &ofproto
->controllers
) {
3998 if (other
->role
== NX_ROLE_MASTER
) {
3999 other
->role
= NX_ROLE_SLAVE
;
4003 ofconn
->role
= role
;
4005 reply
= make_openflow_xid(sizeof *reply
, OFPT_VENDOR
, msg
->header
.xid
,
4007 reply
->nxh
.vendor
= htonl(NX_VENDOR_ID
);
4008 reply
->nxh
.subtype
= htonl(NXT_ROLE_REPLY
);
4009 reply
->role
= htonl(role
);
4010 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4016 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
4018 struct ofp_vendor_header
*ovh
= msg
;
4019 struct nicira_header
*nh
;
4021 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
4022 VLOG_WARN_RL(&rl
, "received vendor message of length %u "
4023 "(expected at least %zu)",
4024 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
4025 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4027 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
4028 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
4030 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
4031 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %u "
4032 "(expected at least %zu)",
4033 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
4034 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4038 switch (ntohl(nh
->subtype
)) {
4039 case NXT_STATUS_REQUEST
:
4040 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
4043 case NXT_TUN_ID_FROM_COOKIE
:
4044 return handle_tun_id_from_cookie(p
, msg
);
4046 case NXT_ROLE_REQUEST
:
4047 return handle_role_request(p
, ofconn
, msg
);
4050 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
4054 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
4056 struct ofp_header
*ob
;
4059 /* Currently, everything executes synchronously, so we can just
4060 * immediately send the barrier reply. */
4061 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
4062 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4067 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
4068 struct ofpbuf
*ofp_msg
)
4070 struct ofp_header
*oh
= ofp_msg
->data
;
4073 COVERAGE_INC(ofproto_recv_openflow
);
4075 case OFPT_ECHO_REQUEST
:
4076 error
= handle_echo_request(ofconn
, oh
);
4079 case OFPT_ECHO_REPLY
:
4083 case OFPT_FEATURES_REQUEST
:
4084 error
= handle_features_request(p
, ofconn
, oh
);
4087 case OFPT_GET_CONFIG_REQUEST
:
4088 error
= handle_get_config_request(p
, ofconn
, oh
);
4091 case OFPT_SET_CONFIG
:
4092 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
4095 case OFPT_PACKET_OUT
:
4096 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
4100 error
= handle_port_mod(p
, ofconn
, oh
);
4104 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
4107 case OFPT_STATS_REQUEST
:
4108 error
= handle_stats_request(p
, ofconn
, oh
);
4112 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
4115 case OFPT_BARRIER_REQUEST
:
4116 error
= handle_barrier_request(ofconn
, oh
);
4120 if (VLOG_IS_WARN_ENABLED()) {
4121 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4122 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4125 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4130 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4135 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4137 struct odp_msg
*msg
= packet
->data
;
4139 struct ofpbuf payload
;
4142 payload
.data
= msg
+ 1;
4143 payload
.size
= msg
->length
- sizeof *msg
;
4144 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
4146 /* Check with in-band control to see if this packet should be sent
4147 * to the local port regardless of the flow table. */
4148 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
4149 union odp_action action
;
4151 memset(&action
, 0, sizeof(action
));
4152 action
.output
.type
= ODPAT_OUTPUT
;
4153 action
.output
.port
= ODPP_LOCAL
;
4154 dpif_execute(p
->dpif
, &action
, 1, &payload
);
4157 rule
= lookup_valid_rule(p
, &flow
);
4159 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4160 struct ofport
*port
= get_port(p
, msg
->port
);
4162 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4163 COVERAGE_INC(ofproto_no_packet_in
);
4164 /* XXX install 'drop' flow entry */
4165 ofpbuf_delete(packet
);
4169 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
4172 COVERAGE_INC(ofproto_packet_in
);
4173 send_packet_in(p
, packet
);
4177 if (rule
->cr
.wc
.wildcards
) {
4178 rule
= rule_create_subrule(p
, rule
, &flow
);
4179 rule_make_actions(p
, rule
, packet
);
4181 if (!rule
->may_install
) {
4182 /* The rule is not installable, that is, we need to process every
4183 * packet, so process the current packet and set its actions into
4185 rule_make_actions(p
, rule
, packet
);
4187 /* XXX revalidate rule if it needs it */
4191 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4193 * Extra-special case for fail-open mode.
4195 * We are in fail-open mode and the packet matched the fail-open rule,
4196 * but we are connected to a controller too. We should send the packet
4197 * up to the controller in the hope that it will try to set up a flow
4198 * and thereby allow us to exit fail-open.
4200 * See the top-level comment in fail-open.c for more information.
4202 send_packet_in(p
, ofpbuf_clone_with_headroom(packet
,
4203 DPIF_RECV_MSG_PADDING
));
4206 ofpbuf_pull(packet
, sizeof *msg
);
4207 rule_execute(p
, rule
, packet
, &flow
);
4208 rule_reinstall(p
, rule
);
4212 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4214 struct odp_msg
*msg
= packet
->data
;
4216 switch (msg
->type
) {
4217 case _ODPL_ACTION_NR
:
4218 COVERAGE_INC(ofproto_ctlr_action
);
4219 send_packet_in(p
, packet
);
4222 case _ODPL_SFLOW_NR
:
4224 ofproto_sflow_received(p
->sflow
, msg
);
4226 ofpbuf_delete(packet
);
4230 handle_odp_miss_msg(p
, packet
);
4234 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
4240 /* Flow expiration. */
4242 struct expire_cbdata
{
4243 struct ofproto
*ofproto
;
4247 static int ofproto_dp_max_idle(const struct ofproto
*);
4248 static void ofproto_update_used(struct ofproto
*);
4249 static void rule_expire(struct cls_rule
*, void *cbdata
);
4251 /* This function is called periodically by ofproto_run(). Its job is to
4252 * collect updates for the flows that have been installed into the datapath,
4253 * most importantly when they last were used, and then use that information to
4254 * expire flows that have not been used recently.
4256 * Returns the number of milliseconds after which it should be called again. */
4258 ofproto_expire(struct ofproto
*ofproto
)
4260 struct expire_cbdata cbdata
;
4262 /* Update 'used' for each flow in the datapath. */
4263 ofproto_update_used(ofproto
);
4265 /* Expire idle flows.
4267 * A wildcarded flow is idle only when all of its subrules have expired due
4268 * to becoming idle, so iterate through the exact-match flows first. */
4269 cbdata
.ofproto
= ofproto
;
4270 cbdata
.dp_max_idle
= ofproto_dp_max_idle(ofproto
);
4271 classifier_for_each(&ofproto
->cls
, CLS_INC_EXACT
, rule_expire
, &cbdata
);
4272 classifier_for_each(&ofproto
->cls
, CLS_INC_WILD
, rule_expire
, &cbdata
);
4274 /* Let the hook know that we're at a stable point: all outstanding data
4275 * in existing flows has been accounted to the account_cb. Thus, the
4276 * hook can now reasonably do operations that depend on having accurate
4277 * flow volume accounting (currently, that's just bond rebalancing). */
4278 if (ofproto
->ofhooks
->account_checkpoint_cb
) {
4279 ofproto
->ofhooks
->account_checkpoint_cb(ofproto
->aux
);
4282 return MIN(cbdata
.dp_max_idle
, 1000);
4285 /* Update 'used' member of each flow currently installed into the datapath. */
4287 ofproto_update_used(struct ofproto
*p
)
4289 struct odp_flow
*flows
;
4294 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4299 for (i
= 0; i
< n_flows
; i
++) {
4300 struct odp_flow
*f
= &flows
[i
];
4304 odp_flow_key_to_flow(&f
->key
, &flow
);
4306 rule
= rule_from_cls_rule(
4307 classifier_find_rule_exactly(&p
->cls
, &flow
, 0, UINT16_MAX
));
4309 if (rule
&& rule
->installed
) {
4310 update_time(p
, rule
, &f
->stats
);
4311 rule_account(p
, rule
, f
->stats
.n_bytes
);
4313 /* There's a flow in the datapath that we know nothing about.
4315 COVERAGE_INC(ofproto_unexpected_rule
);
4316 dpif_flow_del(p
->dpif
, f
);
4323 /* Calculates and returns the number of milliseconds of idle time after which
4324 * flows should expire from the datapath and we should fold their statistics
4325 * into their parent rules in userspace. */
4327 ofproto_dp_max_idle(const struct ofproto
*ofproto
)
4330 * Idle time histogram.
4332 * Most of the time a switch has a relatively small number of flows. When
4333 * this is the case we might as well keep statistics for all of them in
4334 * userspace and to cache them in the kernel datapath for performance as
4337 * As the number of flows increases, the memory required to maintain
4338 * statistics about them in userspace and in the kernel becomes
4339 * significant. However, with a large number of flows it is likely that
4340 * only a few of them are "heavy hitters" that consume a large amount of
4341 * bandwidth. At this point, only heavy hitters are worth caching in the
4342 * kernel and maintaining in userspaces; other flows we can discard.
4344 * The technique used to compute the idle time is to build a histogram with
4345 * N_BUCKETS bucket whose width is BUCKET_WIDTH msecs each. Each flow that
4346 * is installed in the kernel gets dropped in the appropriate bucket.
4347 * After the histogram has been built, we compute the cutoff so that only
4348 * the most-recently-used 1% of flows (but at least 1000 flows) are kept
4349 * cached. At least the most-recently-used bucket of flows is kept, so
4350 * actually an arbitrary number of flows can be kept in any given
4351 * expiration run (though the next run will delete most of those unless
4352 * they receive additional data).
4354 * This requires a second pass through the exact-match flows, in addition
4355 * to the pass made by ofproto_update_used(), because the former function
4356 * never looks at uninstallable flows.
4358 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4359 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4360 int buckets
[N_BUCKETS
] = { 0 };
4366 total
= classifier_count_exact(&ofproto
->cls
);
4367 if (total
<= 1000) {
4368 return N_BUCKETS
* BUCKET_WIDTH
;
4371 /* Build histogram. */
4373 CLASSIFIER_FOR_EACH_EXACT_RULE (rule
, cr
, &ofproto
->cls
) {
4374 long long int idle
= now
- rule
->used
;
4375 int bucket
= (idle
<= 0 ? 0
4376 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4377 : (unsigned int) idle
/ BUCKET_WIDTH
);
4381 /* Find the first bucket whose flows should be expired. */
4382 for (bucket
= 0; bucket
< N_BUCKETS
; bucket
++) {
4383 if (buckets
[bucket
]) {
4386 subtotal
+= buckets
[bucket
++];
4387 } while (bucket
< N_BUCKETS
&& subtotal
< MAX(1000, total
/ 100));
4392 if (VLOG_IS_DBG_ENABLED()) {
4396 ds_put_cstr(&s
, "keep");
4397 for (i
= 0; i
< N_BUCKETS
; i
++) {
4399 ds_put_cstr(&s
, ", drop");
4402 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4405 VLOG_INFO("%s: %s (msec:count)",
4406 dpif_name(ofproto
->dpif
), ds_cstr(&s
));
4410 return bucket
* BUCKET_WIDTH
;
4414 rule_active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
4416 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
4417 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
4418 struct ofexpired expired
;
4419 struct odp_flow odp_flow
;
4421 /* Get updated flow stats.
4423 * XXX We could avoid this call entirely if (1) ofproto_update_used()
4424 * updated TCP flags and (2) the dpif_flow_list_all() in
4425 * ofproto_update_used() zeroed TCP flags. */
4426 memset(&odp_flow
, 0, sizeof odp_flow
);
4427 if (rule
->installed
) {
4428 odp_flow_key_from_flow(&odp_flow
.key
, &rule
->cr
.flow
);
4429 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
4430 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
4432 if (odp_flow
.stats
.n_packets
) {
4433 update_time(ofproto
, rule
, &odp_flow
.stats
);
4434 netflow_flow_update_flags(&rule
->nf_flow
,
4435 odp_flow
.stats
.tcp_flags
);
4439 expired
.flow
= rule
->cr
.flow
;
4440 expired
.packet_count
= rule
->packet_count
+
4441 odp_flow
.stats
.n_packets
;
4442 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
4443 expired
.used
= rule
->used
;
4445 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
4449 /* If 'cls_rule' is an OpenFlow rule, that has expired according to OpenFlow
4450 * rules, then delete it entirely.
4452 * If 'cls_rule' is a subrule, that has not been used recently, remove it from
4453 * the datapath and fold its statistics back into its super-rule.
4455 * (This is a callback function for classifier_for_each().) */
4457 rule_expire(struct cls_rule
*cls_rule
, void *cbdata_
)
4459 struct expire_cbdata
*cbdata
= cbdata_
;
4460 struct ofproto
*ofproto
= cbdata
->ofproto
;
4461 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
4462 long long int hard_expire
, idle_expire
, expire
, now
;
4464 /* Calculate OpenFlow expiration times for 'rule'. */
4465 hard_expire
= (rule
->hard_timeout
4466 ? rule
->created
+ rule
->hard_timeout
* 1000
4468 idle_expire
= (rule
->idle_timeout
4469 && (rule
->super
|| list_is_empty(&rule
->list
))
4470 ? rule
->used
+ rule
->idle_timeout
* 1000
4472 expire
= MIN(hard_expire
, idle_expire
);
4476 /* 'rule' has not expired according to OpenFlow rules. */
4477 if (!rule
->cr
.wc
.wildcards
) {
4478 if (now
>= rule
->used
+ cbdata
->dp_max_idle
) {
4479 /* This rule is idle, so drop it to free up resources. */
4481 /* It's not part of the OpenFlow flow table, so we can
4482 * delete it entirely and fold its statistics into its
4484 rule_remove(ofproto
, rule
);
4486 /* It is part of the OpenFlow flow table, so we have to
4487 * keep the rule but we can at least uninstall it from the
4489 rule_uninstall(ofproto
, rule
);
4492 /* Send NetFlow active timeout if appropriate. */
4493 rule_active_timeout(cbdata
->ofproto
, rule
);
4497 /* 'rule' has expired according to OpenFlow rules. */
4498 COVERAGE_INC(ofproto_expired
);
4500 /* Update stats. (This is a no-op if the rule expired due to an idle
4501 * timeout, because that only happens when the rule has no subrules
4503 if (rule
->cr
.wc
.wildcards
) {
4504 struct rule
*subrule
, *next
;
4505 LIST_FOR_EACH_SAFE (subrule
, next
, list
, &rule
->list
) {
4506 rule_remove(cbdata
->ofproto
, subrule
);
4509 rule_uninstall(cbdata
->ofproto
, rule
);
4512 /* Get rid of the rule. */
4513 if (!rule_is_hidden(rule
)) {
4514 send_flow_removed(cbdata
->ofproto
, rule
, now
,
4516 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
4518 rule_remove(cbdata
->ofproto
, rule
);
4523 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
4525 struct rule
*sub
= rule_from_cls_rule(sub_
);
4526 struct revalidate_cbdata
*cbdata
= cbdata_
;
4528 if (cbdata
->revalidate_all
4529 || (cbdata
->revalidate_subrules
&& sub
->super
)
4530 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
4531 revalidate_rule(cbdata
->ofproto
, sub
);
4536 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
4538 const struct flow
*flow
= &rule
->cr
.flow
;
4540 COVERAGE_INC(ofproto_revalidate_rule
);
4543 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
4545 rule_remove(p
, rule
);
4547 } else if (super
!= rule
->super
) {
4548 COVERAGE_INC(ofproto_revalidate_moved
);
4549 list_remove(&rule
->list
);
4550 list_push_back(&super
->list
, &rule
->list
);
4551 rule
->super
= super
;
4552 rule
->hard_timeout
= super
->hard_timeout
;
4553 rule
->idle_timeout
= super
->idle_timeout
;
4554 rule
->created
= super
->created
;
4559 rule_update_actions(p
, rule
);
4563 static struct ofpbuf
*
4564 compose_flow_removed(struct ofproto
*p
, const struct rule
*rule
,
4565 long long int now
, uint8_t reason
)
4567 struct ofp_flow_removed
*ofr
;
4569 long long int tdiff
= now
- rule
->created
;
4570 uint32_t sec
= tdiff
/ 1000;
4571 uint32_t msec
= tdiff
- (sec
* 1000);
4573 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
4574 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, p
->tun_id_from_cookie
,
4576 ofr
->cookie
= rule
->flow_cookie
;
4577 ofr
->priority
= htons(rule
->cr
.priority
);
4578 ofr
->reason
= reason
;
4579 ofr
->duration_sec
= htonl(sec
);
4580 ofr
->duration_nsec
= htonl(msec
* 1000000);
4581 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4582 ofr
->packet_count
= htonll(rule
->packet_count
);
4583 ofr
->byte_count
= htonll(rule
->byte_count
);
4589 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
4590 long long int now
, uint8_t reason
)
4592 struct ofconn
*ofconn
;
4593 struct ofconn
*prev
;
4594 struct ofpbuf
*buf
= NULL
;
4596 if (!rule
->send_flow_removed
) {
4600 /* We limit the maximum number of queued flow expirations it by accounting
4601 * them under the counter for replies. That works because preventing
4602 * OpenFlow requests from being processed also prevents new flows from
4603 * being added (and expiring). (It also prevents processing OpenFlow
4604 * requests that would not add new flows, so it is imperfect.) */
4607 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
4608 if (rconn_is_connected(ofconn
->rconn
)
4609 && ofconn_receives_async_msgs(ofconn
)) {
4611 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
4613 buf
= compose_flow_removed(p
, rule
, now
, reason
);
4619 queue_tx(buf
, prev
, prev
->reply_counter
);
4623 /* pinsched callback for sending 'packet' on 'ofconn'. */
4625 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4627 struct ofconn
*ofconn
= ofconn_
;
4629 rconn_send_with_limit(ofconn
->rconn
, packet
,
4630 ofconn
->packet_in_counter
, 100);
4633 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4634 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4635 * packet scheduler for sending.
4637 * 'max_len' specifies the maximum number of bytes of the packet to send on
4638 * 'ofconn' (INT_MAX specifies no limit).
4640 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4641 * ownership is transferred to this function. */
4643 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4646 struct ofproto
*ofproto
= ofconn
->ofproto
;
4647 struct ofp_packet_in
*opi
= packet
->data
;
4648 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4649 int send_len
, trim_size
;
4653 if (opi
->reason
== OFPR_ACTION
) {
4654 buffer_id
= UINT32_MAX
;
4655 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4656 buffer_id
= pktbuf_get_null();
4657 } else if (!ofconn
->pktbuf
) {
4658 buffer_id
= UINT32_MAX
;
4660 struct ofpbuf payload
;
4661 payload
.data
= opi
->data
;
4662 payload
.size
= packet
->size
- offsetof(struct ofp_packet_in
, data
);
4663 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4666 /* Figure out how much of the packet to send. */
4667 send_len
= ntohs(opi
->total_len
);
4668 if (buffer_id
!= UINT32_MAX
) {
4669 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4671 send_len
= MIN(send_len
, max_len
);
4673 /* Adjust packet length and clone if necessary. */
4674 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4676 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4679 packet
->size
= trim_size
;
4682 /* Update packet headers. */
4683 opi
->buffer_id
= htonl(buffer_id
);
4684 update_openflow_length(packet
);
4686 /* Hand over to packet scheduler. It might immediately call into
4687 * do_send_packet_in() or it might buffer it for a while (until a later
4688 * call to pinsched_run()). */
4689 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4690 packet
, do_send_packet_in
, ofconn
);
4693 /* Replace struct odp_msg header in 'packet' by equivalent struct
4694 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4695 * returned by dpif_recv()).
4697 * The conversion is not complete: the caller still needs to trim any unneeded
4698 * payload off the end of the buffer, set the length in the OpenFlow header,
4699 * and set buffer_id. Those require us to know the controller settings and so
4700 * must be done on a per-controller basis.
4702 * Returns the maximum number of bytes of the packet that should be sent to
4703 * the controller (INT_MAX if no limit). */
4705 do_convert_to_packet_in(struct ofpbuf
*packet
)
4707 struct odp_msg
*msg
= packet
->data
;
4708 struct ofp_packet_in
*opi
;
4714 /* Extract relevant header fields */
4715 if (msg
->type
== _ODPL_ACTION_NR
) {
4716 reason
= OFPR_ACTION
;
4719 reason
= OFPR_NO_MATCH
;
4722 total_len
= msg
->length
- sizeof *msg
;
4723 in_port
= odp_port_to_ofp_port(msg
->port
);
4725 /* Repurpose packet buffer by overwriting header. */
4726 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4727 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4728 opi
->header
.version
= OFP_VERSION
;
4729 opi
->header
.type
= OFPT_PACKET_IN
;
4730 opi
->total_len
= htons(total_len
);
4731 opi
->in_port
= htons(in_port
);
4732 opi
->reason
= reason
;
4737 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4738 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4739 * as necessary according to their individual configurations.
4741 * 'packet' must have sufficient headroom to convert it into a struct
4742 * ofp_packet_in (e.g. as returned by dpif_recv()).
4744 * Takes ownership of 'packet'. */
4746 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
4748 struct ofconn
*ofconn
, *prev
;
4751 max_len
= do_convert_to_packet_in(packet
);
4754 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
4755 if (ofconn_receives_async_msgs(ofconn
)) {
4757 schedule_packet_in(prev
, packet
, max_len
, true);
4763 schedule_packet_in(prev
, packet
, max_len
, false);
4765 ofpbuf_delete(packet
);
4770 pick_datapath_id(const struct ofproto
*ofproto
)
4772 const struct ofport
*port
;
4774 port
= get_port(ofproto
, ODPP_LOCAL
);
4776 uint8_t ea
[ETH_ADDR_LEN
];
4779 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4781 return eth_addr_to_uint64(ea
);
4783 VLOG_WARN("could not get MAC address for %s (%s)",
4784 netdev_get_name(port
->netdev
), strerror(error
));
4786 return ofproto
->fallback_dpid
;
4790 pick_fallback_dpid(void)
4792 uint8_t ea
[ETH_ADDR_LEN
];
4793 eth_addr_nicira_random(ea
);
4794 return eth_addr_to_uint64(ea
);
4798 default_normal_ofhook_cb(const struct flow
*flow
, const struct ofpbuf
*packet
,
4799 struct odp_actions
*actions
, tag_type
*tags
,
4800 uint16_t *nf_output_iface
, void *ofproto_
)
4802 struct ofproto
*ofproto
= ofproto_
;
4805 /* Drop frames for reserved multicast addresses. */
4806 if (eth_addr_is_reserved(flow
->dl_dst
)) {
4810 /* Learn source MAC (but don't try to learn from revalidation). */
4811 if (packet
!= NULL
) {
4812 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
4814 GRAT_ARP_LOCK_NONE
);
4816 /* The log messages here could actually be useful in debugging,
4817 * so keep the rate limit relatively high. */
4818 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
4819 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
4820 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
4821 ofproto_revalidate(ofproto
, rev_tag
);
4825 /* Determine output port. */
4826 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
4829 flood_packets(ofproto
, flow
->in_port
, OFPPC_NO_FLOOD
,
4830 nf_output_iface
, actions
);
4831 } else if (out_port
!= flow
->in_port
) {
4832 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
4833 *nf_output_iface
= out_port
;
4841 static const struct ofhooks default_ofhooks
= {
4842 default_normal_ofhook_cb
,