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 "classifier.h"
29 #include "discovery.h"
31 #include "dynamic-string.h"
32 #include "fail-open.h"
34 #include "mac-learning.h"
38 #include "ofp-print.h"
40 #include "ofproto-sflow.h"
42 #include "openflow/nicira-ext.h"
43 #include "openflow/openflow.h"
44 #include "openvswitch/datapath-protocol.h"
48 #include "poll-loop.h"
49 #include "port-array.h"
53 #include "stream-ssl.h"
62 VLOG_DEFINE_THIS_MODULE(ofproto
)
64 #include "sflow_api.h"
68 TABLEID_CLASSIFIER
= 1
72 struct netdev
*netdev
;
73 struct ofp_phy_port opp
; /* In host byte order. */
76 static void ofport_free(struct ofport
*);
77 static void hton_ofp_phy_port(struct ofp_phy_port
*);
79 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
80 const flow_t
*flow
, struct ofproto
*ofproto
,
81 const struct ofpbuf
*packet
,
82 struct odp_actions
*out
, tag_type
*tags
,
83 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
88 uint64_t flow_cookie
; /* Controller-issued identifier.
89 (Kept in network-byte order.) */
90 uint16_t idle_timeout
; /* In seconds from time of last use. */
91 uint16_t hard_timeout
; /* In seconds from time of creation. */
92 bool send_flow_removed
; /* Send a flow removed message? */
93 long long int used
; /* Last-used time (0 if never used). */
94 long long int created
; /* Creation time. */
95 uint64_t packet_count
; /* Number of packets received. */
96 uint64_t byte_count
; /* Number of bytes received. */
97 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
98 tag_type tags
; /* Tags (set only by hooks). */
99 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
101 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
102 * exact-match rule (having cr.wc.wildcards of 0) generated from the
103 * wildcard rule 'super'. In this case, 'list' is an element of the
106 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
107 * a list of subrules. A super-rule with no wildcards (where
108 * cr.wc.wildcards is 0) will never have any subrules. */
114 * 'n_actions' is the number of elements in the 'actions' array. A single
115 * action may take up more more than one element's worth of space.
117 * A subrule has no actions (it uses the super-rule's actions). */
119 union ofp_action
*actions
;
123 * A super-rule with wildcard fields never has ODP actions (since the
124 * datapath only supports exact-match flows). */
125 bool installed
; /* Installed in datapath? */
126 bool may_install
; /* True ordinarily; false if actions must
127 * be reassessed for every packet. */
129 union odp_action
*odp_actions
;
133 rule_is_hidden(const struct rule
*rule
)
135 /* Subrules are merely an implementation detail, so hide them from the
137 if (rule
->super
!= NULL
) {
141 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
142 * (e.g. by in-band control) and are intentionally hidden from the
144 if (rule
->cr
.priority
> UINT16_MAX
) {
151 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
152 const union ofp_action
*, size_t n_actions
,
153 uint16_t idle_timeout
, uint16_t hard_timeout
,
154 uint64_t flow_cookie
, bool send_flow_removed
);
155 static void rule_free(struct rule
*);
156 static void rule_destroy(struct ofproto
*, struct rule
*);
157 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
158 static void rule_insert(struct ofproto
*, struct rule
*,
159 struct ofpbuf
*packet
, uint16_t in_port
);
160 static void rule_remove(struct ofproto
*, struct rule
*);
161 static bool rule_make_actions(struct ofproto
*, struct rule
*,
162 const struct ofpbuf
*packet
);
163 static void rule_install(struct ofproto
*, struct rule
*,
164 struct rule
*displaced_rule
);
165 static void rule_uninstall(struct ofproto
*, struct rule
*);
166 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
167 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
168 long long int now
, uint8_t reason
);
170 /* ofproto supports two kinds of OpenFlow connections:
172 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
173 * maintains persistent connections to these controllers and by default
174 * sends them asynchronous messages such as packet-ins.
176 * - "Service" connections, e.g. from ovs-ofctl. When these connections
177 * drop, it is the other side's responsibility to reconnect them if
178 * necessary. ofproto does not send them asynchronous messages by default.
180 * Currently, active (tcp, ssl, unix) connections are always "primary"
181 * connections and passive (ptcp, pssl, punix) connections are always "service"
182 * connections. There is no inherent reason for this, but it reflects the
186 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
187 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
190 /* A listener for incoming OpenFlow "service" connections. */
192 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
193 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
195 /* These are not used by ofservice directly. They are settings for
196 * accepted "struct ofconn"s from the pvconn. */
197 int probe_interval
; /* Max idle time before probing, in seconds. */
198 int rate_limit
; /* Max packet-in rate in packets per second. */
199 int burst_limit
; /* Limit on accumulating packet credits. */
202 static struct ofservice
*ofservice_lookup(struct ofproto
*,
204 static int ofservice_create(struct ofproto
*,
205 const struct ofproto_controller
*);
206 static void ofservice_reconfigure(struct ofservice
*,
207 const struct ofproto_controller
*);
208 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
210 /* An OpenFlow connection. */
212 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
213 struct list node
; /* In struct ofproto's "all_conns" list. */
214 struct rconn
*rconn
; /* OpenFlow connection. */
215 enum ofconn_type type
; /* Type. */
217 /* OFPT_PACKET_IN related data. */
218 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
219 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
220 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
221 int miss_send_len
; /* Bytes to send of buffered packets. */
223 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
224 * requests, and the maximum number before we stop reading OpenFlow
226 #define OFCONN_REPLY_MAX 100
227 struct rconn_packet_counter
*reply_counter
;
229 /* type == OFCONN_PRIMARY only. */
230 enum nx_role role
; /* Role. */
231 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
232 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
233 struct status_category
*ss
; /* Switch status category. */
234 enum ofproto_band band
; /* In-band or out-of-band? */
237 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
238 * "schedulers" array. Their values are 0 and 1, and their meanings and values
239 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
240 * case anything ever changes, check their values here. */
241 #define N_SCHEDULERS 2
242 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
243 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
244 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
245 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
247 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
249 static void ofconn_destroy(struct ofconn
*);
250 static void ofconn_run(struct ofconn
*, struct ofproto
*);
251 static void ofconn_wait(struct ofconn
*);
252 static bool ofconn_receives_async_msgs(const struct ofconn
*);
253 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
254 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
256 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
257 struct rconn_packet_counter
*counter
);
259 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
260 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
264 uint64_t datapath_id
; /* Datapath ID. */
265 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
266 char *mfr_desc
; /* Manufacturer. */
267 char *hw_desc
; /* Hardware. */
268 char *sw_desc
; /* Software version. */
269 char *serial_desc
; /* Serial number. */
270 char *dp_desc
; /* Datapath description. */
274 struct netdev_monitor
*netdev_monitor
;
275 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
277 struct shash port_by_name
;
281 struct switch_status
*switch_status
;
282 struct fail_open
*fail_open
;
283 struct netflow
*netflow
;
284 struct ofproto_sflow
*sflow
;
286 /* In-band control. */
287 struct in_band
*in_band
;
288 long long int next_in_band_update
;
289 struct sockaddr_in
*extra_in_band_remotes
;
290 size_t n_extra_remotes
;
293 struct classifier cls
;
294 bool need_revalidate
;
295 long long int next_expiration
;
296 struct tag_set revalidate_set
;
297 bool tun_id_from_cookie
;
299 /* OpenFlow connections. */
300 struct hmap controllers
; /* Controller "struct ofconn"s. */
301 struct list all_conns
; /* Contains "struct ofconn"s. */
302 enum ofproto_fail_mode fail_mode
;
304 /* OpenFlow listeners. */
305 struct hmap services
; /* Contains "struct ofservice"s. */
306 struct pvconn
**snoops
;
309 /* Hooks for ovs-vswitchd. */
310 const struct ofhooks
*ofhooks
;
313 /* Used by default ofhooks. */
314 struct mac_learning
*ml
;
317 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
319 static const struct ofhooks default_ofhooks
;
321 static uint64_t pick_datapath_id(const struct ofproto
*);
322 static uint64_t pick_fallback_dpid(void);
324 static void update_used(struct ofproto
*);
325 static void update_stats(struct ofproto
*, struct rule
*,
326 const struct odp_flow_stats
*);
327 static void expire_rule(struct cls_rule
*, void *ofproto
);
328 static void active_timeout(struct ofproto
*ofproto
, struct rule
*rule
);
329 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
330 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
332 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
334 static void handle_openflow(struct ofconn
*, struct ofproto
*,
337 static void refresh_port_groups(struct ofproto
*);
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 port_array_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
, struct 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
, struct 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
, struct 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
, struct ofconn
, hmap_node
,
666 struct ofproto_controller
*c
;
668 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
670 ofconn_destroy(ofconn
);
672 update_controller(ofconn
, c
);
679 /* Delete services that are no longer configured.
680 * Update configuration of all now-existing services. */
681 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, struct ofservice
, node
,
683 struct ofproto_controller
*c
;
685 c
= shash_find_data(&new_controllers
,
686 pvconn_get_name(ofservice
->pvconn
));
688 ofservice_destroy(p
, ofservice
);
690 ofservice_reconfigure(ofservice
, c
);
694 shash_destroy(&new_controllers
);
696 update_in_band_remotes(p
);
699 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
700 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
701 struct ofconn
, hmap_node
);
702 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
703 rconn_status_cb
, ofconn
->rconn
);
708 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
710 p
->fail_mode
= fail_mode
;
714 /* Drops the connections between 'ofproto' and all of its controllers, forcing
715 * them to reconnect. */
717 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
719 struct ofconn
*ofconn
;
721 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &ofproto
->all_conns
) {
722 rconn_reconnect(ofconn
->rconn
);
727 any_extras_changed(const struct ofproto
*ofproto
,
728 const struct sockaddr_in
*extras
, size_t n
)
732 if (n
!= ofproto
->n_extra_remotes
) {
736 for (i
= 0; i
< n
; i
++) {
737 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
738 const struct sockaddr_in
*new = &extras
[i
];
740 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
741 old
->sin_port
!= new->sin_port
) {
749 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
750 * in-band control should guarantee access, in the same way that in-band
751 * control guarantees access to OpenFlow controllers. */
753 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
754 const struct sockaddr_in
*extras
, size_t n
)
756 if (!any_extras_changed(ofproto
, extras
, n
)) {
760 free(ofproto
->extra_in_band_remotes
);
761 ofproto
->n_extra_remotes
= n
;
762 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
764 update_in_band_remotes(ofproto
);
768 ofproto_set_desc(struct ofproto
*p
,
769 const char *mfr_desc
, const char *hw_desc
,
770 const char *sw_desc
, const char *serial_desc
,
773 struct ofp_desc_stats
*ods
;
776 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
777 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
778 sizeof ods
->mfr_desc
);
781 p
->mfr_desc
= xstrdup(mfr_desc
);
784 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
785 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
786 sizeof ods
->hw_desc
);
789 p
->hw_desc
= xstrdup(hw_desc
);
792 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
793 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
794 sizeof ods
->sw_desc
);
797 p
->sw_desc
= xstrdup(sw_desc
);
800 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
801 VLOG_WARN("truncating serial_desc, must be less than %zu "
803 sizeof ods
->serial_num
);
805 free(p
->serial_desc
);
806 p
->serial_desc
= xstrdup(serial_desc
);
809 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
810 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
811 sizeof ods
->dp_desc
);
814 p
->dp_desc
= xstrdup(dp_desc
);
819 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
820 const struct svec
*svec
)
822 struct pvconn
**pvconns
= *pvconnsp
;
823 size_t n_pvconns
= *n_pvconnsp
;
827 for (i
= 0; i
< n_pvconns
; i
++) {
828 pvconn_close(pvconns
[i
]);
832 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
834 for (i
= 0; i
< svec
->n
; i
++) {
835 const char *name
= svec
->names
[i
];
836 struct pvconn
*pvconn
;
839 error
= pvconn_open(name
, &pvconn
);
841 pvconns
[n_pvconns
++] = pvconn
;
843 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
851 *n_pvconnsp
= n_pvconns
;
857 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
859 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
863 ofproto_set_netflow(struct ofproto
*ofproto
,
864 const struct netflow_options
*nf_options
)
866 if (nf_options
&& nf_options
->collectors
.n
) {
867 if (!ofproto
->netflow
) {
868 ofproto
->netflow
= netflow_create();
870 return netflow_set_options(ofproto
->netflow
, nf_options
);
872 netflow_destroy(ofproto
->netflow
);
873 ofproto
->netflow
= NULL
;
879 ofproto_set_sflow(struct ofproto
*ofproto
,
880 const struct ofproto_sflow_options
*oso
)
882 struct ofproto_sflow
*os
= ofproto
->sflow
;
885 struct ofport
*ofport
;
886 unsigned int odp_port
;
888 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
889 refresh_port_groups(ofproto
);
890 PORT_ARRAY_FOR_EACH (ofport
, &ofproto
->ports
, odp_port
) {
891 ofproto_sflow_add_port(os
, odp_port
,
892 netdev_get_name(ofport
->netdev
));
895 ofproto_sflow_set_options(os
, oso
);
897 ofproto_sflow_destroy(os
);
898 ofproto
->sflow
= NULL
;
903 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
905 return ofproto
->datapath_id
;
909 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
911 return !hmap_is_empty(&ofproto
->controllers
);
914 enum ofproto_fail_mode
915 ofproto_get_fail_mode(const struct ofproto
*p
)
921 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
925 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
926 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
931 ofproto_destroy(struct ofproto
*p
)
933 struct ofservice
*ofservice
, *next_ofservice
;
934 struct ofconn
*ofconn
, *next_ofconn
;
935 struct ofport
*ofport
;
936 unsigned int port_no
;
943 /* Destroy fail-open and in-band early, since they touch the classifier. */
944 fail_open_destroy(p
->fail_open
);
947 in_band_destroy(p
->in_band
);
949 free(p
->extra_in_band_remotes
);
951 ofproto_flush_flows(p
);
952 classifier_destroy(&p
->cls
);
954 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
956 ofconn_destroy(ofconn
);
958 hmap_destroy(&p
->controllers
);
961 netdev_monitor_destroy(p
->netdev_monitor
);
962 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
965 shash_destroy(&p
->port_by_name
);
967 switch_status_destroy(p
->switch_status
);
968 netflow_destroy(p
->netflow
);
969 ofproto_sflow_destroy(p
->sflow
);
971 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, struct ofservice
, node
,
973 ofservice_destroy(p
, ofservice
);
975 hmap_destroy(&p
->services
);
977 for (i
= 0; i
< p
->n_snoops
; i
++) {
978 pvconn_close(p
->snoops
[i
]);
982 mac_learning_destroy(p
->ml
);
987 free(p
->serial_desc
);
990 port_array_destroy(&p
->ports
);
996 ofproto_run(struct ofproto
*p
)
998 int error
= ofproto_run1(p
);
1000 error
= ofproto_run2(p
, false);
1006 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1008 if (error
== ENOBUFS
) {
1009 reinit_ports(ofproto
);
1010 } else if (!error
) {
1011 update_port(ofproto
, devname
);
1016 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1017 * means that 'ofconn' is more interesting for monitoring than a lower return
1020 snoop_preference(const struct ofconn
*ofconn
)
1022 switch (ofconn
->role
) {
1023 case NX_ROLE_MASTER
:
1030 /* Shouldn't happen. */
1035 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1036 * Connects this vconn to a controller. */
1038 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1040 struct ofconn
*ofconn
, *best
;
1042 /* Pick a controller for monitoring. */
1044 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &ofproto
->all_conns
) {
1045 if (ofconn
->type
== OFCONN_PRIMARY
1046 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1052 rconn_add_monitor(best
->rconn
, vconn
);
1054 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1060 ofproto_run1(struct ofproto
*p
)
1062 struct ofconn
*ofconn
, *next_ofconn
;
1063 struct ofservice
*ofservice
;
1068 if (shash_is_empty(&p
->port_by_name
)) {
1072 for (i
= 0; i
< 50; i
++) {
1076 error
= dpif_recv(p
->dpif
, &buf
);
1078 if (error
== ENODEV
) {
1079 /* Someone destroyed the datapath behind our back. The caller
1080 * better destroy us and give up, because we're just going to
1081 * spin from here on out. */
1082 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1083 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1084 dpif_name(p
->dpif
));
1090 handle_odp_msg(p
, buf
);
1093 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1094 process_port_change(p
, error
, devname
);
1096 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1097 &devname
)) != EAGAIN
) {
1098 process_port_change(p
, error
, devname
);
1102 if (time_msec() >= p
->next_in_band_update
) {
1103 update_in_band_remotes(p
);
1105 in_band_run(p
->in_band
);
1108 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
1110 ofconn_run(ofconn
, p
);
1113 /* Fail-open maintenance. Do this after processing the ofconns since
1114 * fail-open checks the status of the controller rconn. */
1116 fail_open_run(p
->fail_open
);
1119 HMAP_FOR_EACH (ofservice
, struct ofservice
, node
, &p
->services
) {
1120 struct vconn
*vconn
;
1123 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1125 struct ofconn
*ofconn
;
1126 struct rconn
*rconn
;
1129 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1130 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1131 rconn_connect_unreliably(rconn
, vconn
, name
);
1134 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1135 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1136 ofservice
->burst_limit
);
1137 } else if (retval
!= EAGAIN
) {
1138 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1142 for (i
= 0; i
< p
->n_snoops
; i
++) {
1143 struct vconn
*vconn
;
1146 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1148 add_snooper(p
, vconn
);
1149 } else if (retval
!= EAGAIN
) {
1150 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1154 if (time_msec() >= p
->next_expiration
) {
1155 COVERAGE_INC(ofproto_expiration
);
1156 p
->next_expiration
= time_msec() + 1000;
1159 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
1161 /* Let the hook know that we're at a stable point: all outstanding data
1162 * in existing flows has been accounted to the account_cb. Thus, the
1163 * hook can now reasonably do operations that depend on having accurate
1164 * flow volume accounting (currently, that's just bond rebalancing). */
1165 if (p
->ofhooks
->account_checkpoint_cb
) {
1166 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
1171 netflow_run(p
->netflow
);
1174 ofproto_sflow_run(p
->sflow
);
1180 struct revalidate_cbdata
{
1181 struct ofproto
*ofproto
;
1182 bool revalidate_all
; /* Revalidate all exact-match rules? */
1183 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
1184 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
1188 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1190 if (p
->need_revalidate
|| revalidate_all
1191 || !tag_set_is_empty(&p
->revalidate_set
)) {
1192 struct revalidate_cbdata cbdata
;
1194 cbdata
.revalidate_all
= revalidate_all
;
1195 cbdata
.revalidate_subrules
= p
->need_revalidate
;
1196 cbdata
.revalidate_set
= p
->revalidate_set
;
1197 tag_set_init(&p
->revalidate_set
);
1198 COVERAGE_INC(ofproto_revalidate
);
1199 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
1200 p
->need_revalidate
= false;
1207 ofproto_wait(struct ofproto
*p
)
1209 struct ofservice
*ofservice
;
1210 struct ofconn
*ofconn
;
1213 dpif_recv_wait(p
->dpif
);
1214 dpif_port_poll_wait(p
->dpif
);
1215 netdev_monitor_poll_wait(p
->netdev_monitor
);
1216 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1217 ofconn_wait(ofconn
);
1220 poll_timer_wait_until(p
->next_in_band_update
);
1221 in_band_wait(p
->in_band
);
1224 fail_open_wait(p
->fail_open
);
1227 ofproto_sflow_wait(p
->sflow
);
1229 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1230 poll_immediate_wake();
1232 if (p
->need_revalidate
) {
1233 /* Shouldn't happen, but if it does just go around again. */
1234 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1235 poll_immediate_wake();
1236 } else if (p
->next_expiration
!= LLONG_MAX
) {
1237 poll_timer_wait_until(p
->next_expiration
);
1239 HMAP_FOR_EACH (ofservice
, struct ofservice
, node
, &p
->services
) {
1240 pvconn_wait(ofservice
->pvconn
);
1242 for (i
= 0; i
< p
->n_snoops
; i
++) {
1243 pvconn_wait(p
->snoops
[i
]);
1248 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1250 tag_set_add(&ofproto
->revalidate_set
, tag
);
1254 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1256 return &ofproto
->revalidate_set
;
1260 ofproto_is_alive(const struct ofproto
*p
)
1262 return !hmap_is_empty(&p
->controllers
);
1266 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
1267 const union ofp_action
*actions
, size_t n_actions
,
1268 const struct ofpbuf
*packet
)
1270 struct odp_actions odp_actions
;
1273 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1279 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1281 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
1282 odp_actions
.n_actions
, packet
);
1287 ofproto_add_flow(struct ofproto
*p
,
1288 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
1289 const union ofp_action
*actions
, size_t n_actions
,
1293 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1294 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1296 cls_rule_from_flow(flow
, wildcards
, priority
, &rule
->cr
);
1297 rule_insert(p
, rule
, NULL
, 0);
1301 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1302 uint32_t wildcards
, unsigned int priority
)
1306 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1310 rule_remove(ofproto
, rule
);
1315 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1317 struct rule
*rule
= rule_from_cls_rule(rule_
);
1318 struct ofproto
*ofproto
= ofproto_
;
1320 /* Mark the flow as not installed, even though it might really be
1321 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1322 * There is no point in uninstalling it individually since we are about to
1323 * blow away all the flows with dpif_flow_flush(). */
1324 rule
->installed
= false;
1326 rule_remove(ofproto
, rule
);
1330 ofproto_flush_flows(struct ofproto
*ofproto
)
1332 COVERAGE_INC(ofproto_flush
);
1333 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1334 dpif_flow_flush(ofproto
->dpif
);
1335 if (ofproto
->in_band
) {
1336 in_band_flushed(ofproto
->in_band
);
1338 if (ofproto
->fail_open
) {
1339 fail_open_flushed(ofproto
->fail_open
);
1344 reinit_ports(struct ofproto
*p
)
1346 struct svec devnames
;
1347 struct ofport
*ofport
;
1348 unsigned int port_no
;
1349 struct odp_port
*odp_ports
;
1353 svec_init(&devnames
);
1354 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1355 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1357 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1358 for (i
= 0; i
< n_odp_ports
; i
++) {
1359 svec_add (&devnames
, odp_ports
[i
].devname
);
1363 svec_sort_unique(&devnames
);
1364 for (i
= 0; i
< devnames
.n
; i
++) {
1365 update_port(p
, devnames
.names
[i
]);
1367 svec_destroy(&devnames
);
1371 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1375 struct ofport
*port
;
1376 unsigned int port_no
;
1378 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1380 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1382 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1383 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1384 ports
[n_ports
++] = port_no
;
1387 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1394 refresh_port_groups(struct ofproto
*p
)
1396 size_t n_flood
= refresh_port_group(p
, DP_GROUP_FLOOD
);
1397 size_t n_all
= refresh_port_group(p
, DP_GROUP_ALL
);
1399 ofproto_sflow_set_group_sizes(p
->sflow
, n_flood
, n_all
);
1403 static struct ofport
*
1404 make_ofport(const struct odp_port
*odp_port
)
1406 struct netdev_options netdev_options
;
1407 enum netdev_flags flags
;
1408 struct ofport
*ofport
;
1409 struct netdev
*netdev
;
1413 memset(&netdev_options
, 0, sizeof netdev_options
);
1414 netdev_options
.name
= odp_port
->devname
;
1415 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1417 error
= netdev_open(&netdev_options
, &netdev
);
1419 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1420 "cannot be opened (%s)",
1421 odp_port
->devname
, odp_port
->port
,
1422 odp_port
->devname
, strerror(error
));
1426 ofport
= xmalloc(sizeof *ofport
);
1427 ofport
->netdev
= netdev
;
1428 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1429 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1430 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1431 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1432 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1434 netdev_get_flags(netdev
, &flags
);
1435 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1437 netdev_get_carrier(netdev
, &carrier
);
1438 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1440 netdev_get_features(netdev
,
1441 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1442 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1447 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1449 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1450 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1453 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1454 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1463 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1465 const struct ofp_phy_port
*a
= &a_
->opp
;
1466 const struct ofp_phy_port
*b
= &b_
->opp
;
1468 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1469 return (a
->port_no
== b
->port_no
1470 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1471 && !strcmp((char *) a
->name
, (char *) b
->name
)
1472 && a
->state
== b
->state
1473 && a
->config
== b
->config
1474 && a
->curr
== b
->curr
1475 && a
->advertised
== b
->advertised
1476 && a
->supported
== b
->supported
1477 && a
->peer
== b
->peer
);
1481 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1484 /* XXX Should limit the number of queued port status change messages. */
1485 struct ofconn
*ofconn
;
1486 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1487 struct ofp_port_status
*ops
;
1490 if (!ofconn_receives_async_msgs(ofconn
)) {
1494 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1495 ops
->reason
= reason
;
1496 ops
->desc
= ofport
->opp
;
1497 hton_ofp_phy_port(&ops
->desc
);
1498 queue_tx(b
, ofconn
, NULL
);
1500 if (p
->ofhooks
->port_changed_cb
) {
1501 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1506 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1508 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1509 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1511 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1512 port_array_set(&p
->ports
, odp_port
, ofport
);
1513 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1515 ofproto_sflow_add_port(p
->sflow
, odp_port
, netdev_name
);
1520 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1522 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1524 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1525 port_array_delete(&p
->ports
, odp_port
);
1526 shash_delete(&p
->port_by_name
,
1527 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1529 ofproto_sflow_del_port(p
->sflow
, odp_port
);
1534 ofport_free(struct ofport
*ofport
)
1537 netdev_close(ofport
->netdev
);
1543 update_port(struct ofproto
*p
, const char *devname
)
1545 struct odp_port odp_port
;
1546 struct ofport
*old_ofport
;
1547 struct ofport
*new_ofport
;
1550 COVERAGE_INC(ofproto_update_port
);
1552 /* Query the datapath for port information. */
1553 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1555 /* Find the old ofport. */
1556 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1559 /* There's no port named 'devname' but there might be a port with
1560 * the same port number. This could happen if a port is deleted
1561 * and then a new one added in its place very quickly, or if a port
1562 * is renamed. In the former case we want to send an OFPPR_DELETE
1563 * and an OFPPR_ADD, and in the latter case we want to send a
1564 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1565 * the old port's ifindex against the new port, or perhaps less
1566 * reliably but more portably by comparing the old port's MAC
1567 * against the new port's MAC. However, this code isn't that smart
1568 * and always sends an OFPPR_MODIFY (XXX). */
1569 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1571 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1572 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1573 "%s", strerror(error
));
1577 /* Create a new ofport. */
1578 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1580 /* Eliminate a few pathological cases. */
1581 if (!old_ofport
&& !new_ofport
) {
1583 } else if (old_ofport
&& new_ofport
) {
1584 /* Most of the 'config' bits are OpenFlow soft state, but
1585 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1586 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1587 * leaves the other bits 0.) */
1588 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1590 if (ofport_equal(old_ofport
, new_ofport
)) {
1591 /* False alarm--no change. */
1592 ofport_free(new_ofport
);
1597 /* Now deal with the normal cases. */
1599 ofport_remove(p
, old_ofport
);
1602 ofport_install(p
, new_ofport
);
1604 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1605 (!old_ofport
? OFPPR_ADD
1606 : !new_ofport
? OFPPR_DELETE
1608 ofport_free(old_ofport
);
1610 /* Update port groups. */
1611 refresh_port_groups(p
);
1615 init_ports(struct ofproto
*p
)
1617 struct odp_port
*ports
;
1622 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1627 for (i
= 0; i
< n_ports
; i
++) {
1628 const struct odp_port
*odp_port
= &ports
[i
];
1629 if (!ofport_conflicts(p
, odp_port
)) {
1630 struct ofport
*ofport
= make_ofport(odp_port
);
1632 ofport_install(p
, ofport
);
1637 refresh_port_groups(p
);
1641 static struct ofconn
*
1642 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1644 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1645 ofconn
->ofproto
= p
;
1646 list_push_back(&p
->all_conns
, &ofconn
->node
);
1647 ofconn
->rconn
= rconn
;
1648 ofconn
->type
= type
;
1649 ofconn
->role
= NX_ROLE_OTHER
;
1650 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1651 ofconn
->pktbuf
= NULL
;
1652 ofconn
->miss_send_len
= 0;
1653 ofconn
->reply_counter
= rconn_packet_counter_create ();
1658 ofconn_destroy(struct ofconn
*ofconn
)
1660 if (ofconn
->type
== OFCONN_PRIMARY
) {
1661 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1663 discovery_destroy(ofconn
->discovery
);
1665 list_remove(&ofconn
->node
);
1666 switch_status_unregister(ofconn
->ss
);
1667 rconn_destroy(ofconn
->rconn
);
1668 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1669 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1670 pktbuf_destroy(ofconn
->pktbuf
);
1675 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1680 if (ofconn
->discovery
) {
1681 char *controller_name
;
1682 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1683 discovery_question_connectivity(ofconn
->discovery
);
1685 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1686 if (controller_name
) {
1687 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1688 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1691 rconn_disconnect(ofconn
->rconn
);
1696 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1697 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1700 rconn_run(ofconn
->rconn
);
1702 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1703 /* Limit the number of iterations to prevent other tasks from
1705 for (iteration
= 0; iteration
< 50; iteration
++) {
1706 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1711 fail_open_maybe_recover(p
->fail_open
);
1713 handle_openflow(ofconn
, p
, of_msg
);
1714 ofpbuf_delete(of_msg
);
1718 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1719 ofconn_destroy(ofconn
);
1724 ofconn_wait(struct ofconn
*ofconn
)
1728 if (ofconn
->discovery
) {
1729 discovery_wait(ofconn
->discovery
);
1731 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1732 pinsched_wait(ofconn
->schedulers
[i
]);
1734 rconn_run_wait(ofconn
->rconn
);
1735 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1736 rconn_recv_wait(ofconn
->rconn
);
1738 COVERAGE_INC(ofproto_ofconn_stuck
);
1742 /* Returns true if 'ofconn' should receive asynchronous messages. */
1744 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1746 if (ofconn
->type
== OFCONN_PRIMARY
) {
1747 /* Primary controllers always get asynchronous messages unless they
1748 * have configured themselves as "slaves". */
1749 return ofconn
->role
!= NX_ROLE_SLAVE
;
1751 /* Service connections don't get asynchronous messages unless they have
1752 * explicitly asked for them by setting a nonzero miss send length. */
1753 return ofconn
->miss_send_len
> 0;
1757 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1758 * and 'target', suitable for use in log messages for identifying the
1761 * The name is dynamically allocated. The caller should free it (with free())
1762 * when it is no longer needed. */
1764 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1766 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1770 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1774 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1775 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1779 *s
= pinsched_create(rate
, burst
,
1780 ofconn
->ofproto
->switch_status
);
1782 pinsched_set_limits(*s
, rate
, burst
);
1785 pinsched_destroy(*s
);
1792 ofservice_reconfigure(struct ofservice
*ofservice
,
1793 const struct ofproto_controller
*c
)
1795 ofservice
->probe_interval
= c
->probe_interval
;
1796 ofservice
->rate_limit
= c
->rate_limit
;
1797 ofservice
->burst_limit
= c
->burst_limit
;
1800 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1801 * positive errno value. */
1803 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1805 struct ofservice
*ofservice
;
1806 struct pvconn
*pvconn
;
1809 error
= pvconn_open(c
->target
, &pvconn
);
1814 ofservice
= xzalloc(sizeof *ofservice
);
1815 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1816 hash_string(c
->target
, 0));
1817 ofservice
->pvconn
= pvconn
;
1819 ofservice_reconfigure(ofservice
, c
);
1825 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1827 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1828 pvconn_close(ofservice
->pvconn
);
1832 /* Finds and returns the ofservice within 'ofproto' that has the given
1833 * 'target', or a null pointer if none exists. */
1834 static struct ofservice
*
1835 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1837 struct ofservice
*ofservice
;
1839 HMAP_FOR_EACH_WITH_HASH (ofservice
, struct ofservice
, node
,
1840 hash_string(target
, 0), &ofproto
->services
) {
1841 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1848 /* Caller is responsible for initializing the 'cr' member of the returned
1850 static struct rule
*
1851 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1852 const union ofp_action
*actions
, size_t n_actions
,
1853 uint16_t idle_timeout
, uint16_t hard_timeout
,
1854 uint64_t flow_cookie
, bool send_flow_removed
)
1856 struct rule
*rule
= xzalloc(sizeof *rule
);
1857 rule
->idle_timeout
= idle_timeout
;
1858 rule
->hard_timeout
= hard_timeout
;
1859 rule
->flow_cookie
= flow_cookie
;
1860 rule
->used
= rule
->created
= time_msec();
1861 rule
->send_flow_removed
= send_flow_removed
;
1862 rule
->super
= super
;
1864 list_push_back(&super
->list
, &rule
->list
);
1866 list_init(&rule
->list
);
1868 rule
->n_actions
= n_actions
;
1869 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1870 netflow_flow_clear(&rule
->nf_flow
);
1871 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1876 static struct rule
*
1877 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1879 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1883 rule_free(struct rule
*rule
)
1885 free(rule
->actions
);
1886 free(rule
->odp_actions
);
1890 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1891 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1892 * through all of its subrules and revalidates them, destroying any that no
1893 * longer has a super-rule (which is probably all of them).
1895 * Before calling this function, the caller must make have removed 'rule' from
1896 * the classifier. If 'rule' is an exact-match rule, the caller is also
1897 * responsible for ensuring that it has been uninstalled from the datapath. */
1899 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1902 struct rule
*subrule
, *next
;
1903 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1904 revalidate_rule(ofproto
, subrule
);
1907 list_remove(&rule
->list
);
1913 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1915 const union ofp_action
*oa
;
1916 struct actions_iterator i
;
1918 if (out_port
== htons(OFPP_NONE
)) {
1921 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1922 oa
= actions_next(&i
)) {
1923 if (action_outputs_to_port(oa
, out_port
)) {
1930 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1931 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1933 * The flow that 'packet' actually contains does not need to actually match
1934 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1935 * the packet and byte counters for 'rule' will be credited for the packet sent
1936 * out whether or not the packet actually matches 'rule'.
1938 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1939 * the caller must already have accurately composed ODP actions for it given
1940 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1941 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1942 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1943 * actions and apply them to 'packet'. */
1945 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1946 struct ofpbuf
*packet
, const flow_t
*flow
)
1948 const union odp_action
*actions
;
1950 struct odp_actions a
;
1952 /* Grab or compose the ODP actions.
1954 * The special case for an exact-match 'rule' where 'flow' is not the
1955 * rule's flow is important to avoid, e.g., sending a packet out its input
1956 * port simply because the ODP actions were composed for the wrong
1958 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1959 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1960 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1961 packet
, &a
, NULL
, 0, NULL
)) {
1964 actions
= a
.actions
;
1965 n_actions
= a
.n_actions
;
1967 actions
= rule
->odp_actions
;
1968 n_actions
= rule
->n_odp_actions
;
1971 /* Execute the ODP actions. */
1972 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1973 actions
, n_actions
, packet
)) {
1974 struct odp_flow_stats stats
;
1975 flow_extract_stats(flow
, packet
, &stats
);
1976 update_stats(ofproto
, rule
, &stats
);
1977 rule
->used
= time_msec();
1978 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
1983 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
1986 struct rule
*displaced_rule
;
1988 /* Insert the rule in the classifier. */
1989 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
1990 if (!rule
->cr
.wc
.wildcards
) {
1991 rule_make_actions(p
, rule
, packet
);
1994 /* Send the packet and credit it to the rule. */
1997 flow_extract(packet
, 0, in_port
, &flow
);
1998 rule_execute(p
, rule
, packet
, &flow
);
2001 /* Install the rule in the datapath only after sending the packet, to
2002 * avoid packet reordering. */
2003 if (rule
->cr
.wc
.wildcards
) {
2004 COVERAGE_INC(ofproto_add_wc_flow
);
2005 p
->need_revalidate
= true;
2007 rule_install(p
, rule
, displaced_rule
);
2010 /* Free the rule that was displaced, if any. */
2011 if (displaced_rule
) {
2012 rule_destroy(p
, displaced_rule
);
2016 static struct rule
*
2017 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
2020 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
2021 rule
->idle_timeout
, rule
->hard_timeout
,
2023 COVERAGE_INC(ofproto_subrule_create
);
2024 cls_rule_from_flow(flow
, 0, (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
2025 : rule
->cr
.priority
), &subrule
->cr
);
2026 classifier_insert_exact(&ofproto
->cls
, &subrule
->cr
);
2032 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2034 if (rule
->cr
.wc
.wildcards
) {
2035 COVERAGE_INC(ofproto_del_wc_flow
);
2036 ofproto
->need_revalidate
= true;
2038 rule_uninstall(ofproto
, rule
);
2040 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2041 rule_destroy(ofproto
, rule
);
2044 /* Returns true if the actions changed, false otherwise. */
2046 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
2047 const struct ofpbuf
*packet
)
2049 const struct rule
*super
;
2050 struct odp_actions a
;
2053 assert(!rule
->cr
.wc
.wildcards
);
2055 super
= rule
->super
? rule
->super
: rule
;
2057 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
2058 packet
, &a
, &rule
->tags
, &rule
->may_install
,
2059 &rule
->nf_flow
.output_iface
);
2061 actions_len
= a
.n_actions
* sizeof *a
.actions
;
2062 if (rule
->n_odp_actions
!= a
.n_actions
2063 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
2064 COVERAGE_INC(ofproto_odp_unchanged
);
2065 free(rule
->odp_actions
);
2066 rule
->n_odp_actions
= a
.n_actions
;
2067 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
2075 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
2076 struct odp_flow_put
*put
)
2078 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
2079 put
->flow
.key
= rule
->cr
.flow
;
2080 put
->flow
.actions
= rule
->odp_actions
;
2081 put
->flow
.n_actions
= rule
->n_odp_actions
;
2082 put
->flow
.flags
= 0;
2084 return dpif_flow_put(ofproto
->dpif
, put
);
2088 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
2090 assert(!rule
->cr
.wc
.wildcards
);
2092 if (rule
->may_install
) {
2093 struct odp_flow_put put
;
2094 if (!do_put_flow(p
, rule
,
2095 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
2097 rule
->installed
= true;
2098 if (displaced_rule
) {
2099 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
2100 rule_post_uninstall(p
, displaced_rule
);
2103 } else if (displaced_rule
) {
2104 rule_uninstall(p
, displaced_rule
);
2109 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
2111 if (rule
->installed
) {
2112 struct odp_flow_put put
;
2113 COVERAGE_INC(ofproto_dp_missed
);
2114 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
2116 rule_install(ofproto
, rule
, NULL
);
2121 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
2123 bool actions_changed
;
2124 uint16_t new_out_iface
, old_out_iface
;
2126 old_out_iface
= rule
->nf_flow
.output_iface
;
2127 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
2129 if (rule
->may_install
) {
2130 if (rule
->installed
) {
2131 if (actions_changed
) {
2132 struct odp_flow_put put
;
2133 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
2134 | ODPPF_ZERO_STATS
, &put
);
2135 update_stats(ofproto
, rule
, &put
.flow
.stats
);
2137 /* Temporarily set the old output iface so that NetFlow
2138 * messages have the correct output interface for the old
2140 new_out_iface
= rule
->nf_flow
.output_iface
;
2141 rule
->nf_flow
.output_iface
= old_out_iface
;
2142 rule_post_uninstall(ofproto
, rule
);
2143 rule
->nf_flow
.output_iface
= new_out_iface
;
2146 rule_install(ofproto
, rule
, NULL
);
2149 rule_uninstall(ofproto
, rule
);
2154 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
2156 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
2158 if (ofproto
->ofhooks
->account_flow_cb
2159 && total_bytes
> rule
->accounted_bytes
)
2161 ofproto
->ofhooks
->account_flow_cb(
2162 &rule
->cr
.flow
, rule
->tags
, rule
->odp_actions
, rule
->n_odp_actions
,
2163 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
2164 rule
->accounted_bytes
= total_bytes
;
2169 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
2171 assert(!rule
->cr
.wc
.wildcards
);
2172 if (rule
->installed
) {
2173 struct odp_flow odp_flow
;
2175 odp_flow
.key
= rule
->cr
.flow
;
2176 odp_flow
.actions
= NULL
;
2177 odp_flow
.n_actions
= 0;
2179 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2180 update_stats(p
, rule
, &odp_flow
.stats
);
2182 rule
->installed
= false;
2184 rule_post_uninstall(p
, rule
);
2189 is_controller_rule(struct rule
*rule
)
2191 /* If the only action is send to the controller then don't report
2192 * NetFlow expiration messages since it is just part of the control
2193 * logic for the network and not real traffic. */
2197 && rule
->super
->n_actions
== 1
2198 && action_outputs_to_port(&rule
->super
->actions
[0],
2199 htons(OFPP_CONTROLLER
)));
2203 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
2205 struct rule
*super
= rule
->super
;
2207 rule_account(ofproto
, rule
, 0);
2209 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
2210 struct ofexpired expired
;
2211 expired
.flow
= rule
->cr
.flow
;
2212 expired
.packet_count
= rule
->packet_count
;
2213 expired
.byte_count
= rule
->byte_count
;
2214 expired
.used
= rule
->used
;
2215 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
2218 super
->packet_count
+= rule
->packet_count
;
2219 super
->byte_count
+= rule
->byte_count
;
2221 /* Reset counters to prevent double counting if the rule ever gets
2223 rule
->packet_count
= 0;
2224 rule
->byte_count
= 0;
2225 rule
->accounted_bytes
= 0;
2227 netflow_flow_clear(&rule
->nf_flow
);
2232 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2233 struct rconn_packet_counter
*counter
)
2235 update_openflow_length(msg
);
2236 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2242 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2243 int error
, const void *data
, size_t len
)
2246 struct ofp_error_msg
*oem
;
2248 if (!(error
>> 16)) {
2249 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
2254 COVERAGE_INC(ofproto_error
);
2255 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
2256 oh
? oh
->xid
: 0, &buf
);
2257 oem
->type
= htons((unsigned int) error
>> 16);
2258 oem
->code
= htons(error
& 0xffff);
2259 memcpy(oem
->data
, data
, len
);
2260 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2264 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2267 size_t oh_length
= ntohs(oh
->length
);
2268 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
2272 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2274 opp
->port_no
= htons(opp
->port_no
);
2275 opp
->config
= htonl(opp
->config
);
2276 opp
->state
= htonl(opp
->state
);
2277 opp
->curr
= htonl(opp
->curr
);
2278 opp
->advertised
= htonl(opp
->advertised
);
2279 opp
->supported
= htonl(opp
->supported
);
2280 opp
->peer
= htonl(opp
->peer
);
2284 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2286 struct ofp_header
*rq
= oh
;
2287 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
2292 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2293 struct ofp_header
*oh
)
2295 struct ofp_switch_features
*osf
;
2297 unsigned int port_no
;
2298 struct ofport
*port
;
2300 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2301 osf
->datapath_id
= htonll(p
->datapath_id
);
2302 osf
->n_buffers
= htonl(pktbuf_capacity());
2304 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2305 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2306 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2307 (1u << OFPAT_SET_VLAN_VID
) |
2308 (1u << OFPAT_SET_VLAN_PCP
) |
2309 (1u << OFPAT_STRIP_VLAN
) |
2310 (1u << OFPAT_SET_DL_SRC
) |
2311 (1u << OFPAT_SET_DL_DST
) |
2312 (1u << OFPAT_SET_NW_SRC
) |
2313 (1u << OFPAT_SET_NW_DST
) |
2314 (1u << OFPAT_SET_NW_TOS
) |
2315 (1u << OFPAT_SET_TP_SRC
) |
2316 (1u << OFPAT_SET_TP_DST
) |
2317 (1u << OFPAT_ENQUEUE
));
2319 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2320 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2323 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2328 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2329 struct ofp_header
*oh
)
2332 struct ofp_switch_config
*osc
;
2336 /* Figure out flags. */
2337 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
2338 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2341 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2342 osc
->flags
= htons(flags
);
2343 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2344 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2350 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
2351 struct ofp_switch_config
*osc
)
2356 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
2360 flags
= ntohs(osc
->flags
);
2362 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2363 switch (flags
& OFPC_FRAG_MASK
) {
2364 case OFPC_FRAG_NORMAL
:
2365 dpif_set_drop_frags(p
->dpif
, false);
2367 case OFPC_FRAG_DROP
:
2368 dpif_set_drop_frags(p
->dpif
, true);
2371 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2377 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2383 add_output_group_action(struct odp_actions
*actions
, uint16_t group
,
2384 uint16_t *nf_output_iface
)
2386 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
2388 if (group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
) {
2389 *nf_output_iface
= NF_OUT_FLOOD
;
2394 add_controller_action(struct odp_actions
*actions
, uint16_t max_len
)
2396 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
2397 a
->controller
.arg
= max_len
;
2400 struct action_xlate_ctx
{
2402 flow_t flow
; /* Flow to which these actions correspond. */
2403 int recurse
; /* Recursion level, via xlate_table_action. */
2404 struct ofproto
*ofproto
;
2405 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2406 * null pointer if we are revalidating
2407 * without a packet to refer to. */
2410 struct odp_actions
*out
; /* Datapath actions. */
2411 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2412 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2413 * be reassessed for every packet. */
2414 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2417 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2418 * flow translation. */
2419 #define MAX_RESUBMIT_RECURSION 8
2421 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2422 struct action_xlate_ctx
*ctx
);
2425 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2427 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
2430 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2431 /* Forwarding disabled on port. */
2436 * We don't have an ofport record for this port, but it doesn't hurt to
2437 * allow forwarding to it anyhow. Maybe such a port will appear later
2438 * and we're pre-populating the flow table.
2442 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2443 ctx
->nf_output_iface
= port
;
2446 static struct rule
*
2447 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
2450 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2452 /* The rule we found might not be valid, since we could be in need of
2453 * revalidation. If it is not valid, don't return it. */
2456 && ofproto
->need_revalidate
2457 && !revalidate_rule(ofproto
, rule
)) {
2458 COVERAGE_INC(ofproto_invalidated
);
2466 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2468 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2469 uint16_t old_in_port
;
2472 /* Look up a flow with 'in_port' as the input port. Then restore the
2473 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2474 * have surprising behavior). */
2475 old_in_port
= ctx
->flow
.in_port
;
2476 ctx
->flow
.in_port
= in_port
;
2477 rule
= lookup_valid_rule(ctx
->ofproto
, &ctx
->flow
);
2478 ctx
->flow
.in_port
= old_in_port
;
2486 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2490 struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2492 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2493 MAX_RESUBMIT_RECURSION
);
2498 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2499 uint16_t port
, uint16_t max_len
)
2502 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2504 ctx
->nf_output_iface
= NF_OUT_DROP
;
2508 add_output_action(ctx
, ctx
->flow
.in_port
);
2511 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2514 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2515 ctx
->out
, ctx
->tags
,
2516 &ctx
->nf_output_iface
,
2517 ctx
->ofproto
->aux
)) {
2518 COVERAGE_INC(ofproto_uninstallable
);
2519 ctx
->may_set_up_flow
= false;
2523 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
,
2524 &ctx
->nf_output_iface
);
2527 add_output_group_action(ctx
->out
, DP_GROUP_ALL
, &ctx
->nf_output_iface
);
2529 case OFPP_CONTROLLER
:
2530 add_controller_action(ctx
->out
, max_len
);
2533 add_output_action(ctx
, ODPP_LOCAL
);
2536 odp_port
= ofp_port_to_odp_port(port
);
2537 if (odp_port
!= ctx
->flow
.in_port
) {
2538 add_output_action(ctx
, odp_port
);
2543 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2544 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2545 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2546 ctx
->nf_output_iface
= prev_nf_output_iface
;
2547 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2548 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2549 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2554 xlate_output_action(struct action_xlate_ctx
*ctx
,
2555 const struct ofp_action_output
*oao
)
2557 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2560 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2561 * optimization, because we're going to add another action that sets the
2562 * priority immediately after, or because there are no actions following the
2565 remove_pop_action(struct action_xlate_ctx
*ctx
)
2567 size_t n
= ctx
->out
->n_actions
;
2568 if (n
> 0 && ctx
->out
->actions
[n
- 1].type
== ODPAT_POP_PRIORITY
) {
2569 ctx
->out
->n_actions
--;
2574 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2575 const struct ofp_action_enqueue
*oae
)
2577 uint16_t ofp_port
, odp_port
;
2581 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2584 /* Fall back to ordinary output action. */
2585 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2589 /* Figure out ODP output port. */
2590 ofp_port
= ntohs(oae
->port
);
2591 if (ofp_port
!= OFPP_IN_PORT
) {
2592 odp_port
= ofp_port_to_odp_port(ofp_port
);
2594 odp_port
= ctx
->flow
.in_port
;
2597 /* Add ODP actions. */
2598 remove_pop_action(ctx
);
2599 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2601 add_output_action(ctx
, odp_port
);
2602 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2604 /* Update NetFlow output port. */
2605 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2606 ctx
->nf_output_iface
= odp_port
;
2607 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2608 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2613 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2614 const struct nx_action_header
*nah
)
2616 const struct nx_action_resubmit
*nar
;
2617 const struct nx_action_set_tunnel
*nast
;
2618 union odp_action
*oa
;
2619 int subtype
= ntohs(nah
->subtype
);
2621 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2623 case NXAST_RESUBMIT
:
2624 nar
= (const struct nx_action_resubmit
*) nah
;
2625 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2628 case NXAST_SET_TUNNEL
:
2629 nast
= (const struct nx_action_set_tunnel
*) nah
;
2630 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2631 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2634 /* If you add a new action here that modifies flow data, don't forget to
2635 * update the flow key in ctx->flow at the same time. */
2638 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2644 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2645 struct action_xlate_ctx
*ctx
)
2647 struct actions_iterator iter
;
2648 const union ofp_action
*ia
;
2649 const struct ofport
*port
;
2651 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
.in_port
);
2652 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2653 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
2654 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2655 /* Drop this flow. */
2659 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2660 uint16_t type
= ntohs(ia
->type
);
2661 union odp_action
*oa
;
2665 xlate_output_action(ctx
, &ia
->output
);
2668 case OFPAT_SET_VLAN_VID
:
2669 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2670 ctx
->flow
.dl_vlan
= oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2673 case OFPAT_SET_VLAN_PCP
:
2674 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2675 ctx
->flow
.dl_vlan_pcp
= oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2678 case OFPAT_STRIP_VLAN
:
2679 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2680 ctx
->flow
.dl_vlan
= htons(OFP_VLAN_NONE
);
2681 ctx
->flow
.dl_vlan_pcp
= 0;
2684 case OFPAT_SET_DL_SRC
:
2685 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2686 memcpy(oa
->dl_addr
.dl_addr
,
2687 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2688 memcpy(ctx
->flow
.dl_src
,
2689 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2692 case OFPAT_SET_DL_DST
:
2693 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2694 memcpy(oa
->dl_addr
.dl_addr
,
2695 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2696 memcpy(ctx
->flow
.dl_dst
,
2697 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2700 case OFPAT_SET_NW_SRC
:
2701 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2702 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2705 case OFPAT_SET_NW_DST
:
2706 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2707 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2710 case OFPAT_SET_NW_TOS
:
2711 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2712 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2715 case OFPAT_SET_TP_SRC
:
2716 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2717 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2720 case OFPAT_SET_TP_DST
:
2721 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2722 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2726 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2730 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
2734 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2741 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2742 const flow_t
*flow
, struct ofproto
*ofproto
,
2743 const struct ofpbuf
*packet
,
2744 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2745 uint16_t *nf_output_iface
)
2747 tag_type no_tags
= 0;
2748 struct action_xlate_ctx ctx
;
2749 COVERAGE_INC(ofproto_ofp2odp
);
2750 odp_actions_init(out
);
2753 ctx
.ofproto
= ofproto
;
2754 ctx
.packet
= packet
;
2756 ctx
.tags
= tags
? tags
: &no_tags
;
2757 ctx
.may_set_up_flow
= true;
2758 ctx
.nf_output_iface
= NF_OUT_DROP
;
2759 do_xlate_actions(in
, n_in
, &ctx
);
2760 remove_pop_action(&ctx
);
2762 /* Check with in-band control to see if we're allowed to set up this
2764 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2765 ctx
.may_set_up_flow
= false;
2768 if (may_set_up_flow
) {
2769 *may_set_up_flow
= ctx
.may_set_up_flow
;
2771 if (nf_output_iface
) {
2772 *nf_output_iface
= ctx
.nf_output_iface
;
2774 if (odp_actions_overflow(out
)) {
2775 odp_actions_init(out
);
2776 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2781 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2782 * error message code (composed with ofp_mkerr()) for the caller to propagate
2783 * upward. Otherwise, returns 0.
2785 * 'oh' is used to make log messages more informative. */
2787 reject_slave_controller(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2789 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
2790 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2793 type_name
= ofp_message_type_to_string(oh
->type
);
2794 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
2798 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
2805 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2806 struct ofp_header
*oh
)
2808 struct ofp_packet_out
*opo
;
2809 struct ofpbuf payload
, *buffer
;
2810 struct odp_actions actions
;
2816 error
= reject_slave_controller(ofconn
, oh
);
2821 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2825 opo
= (struct ofp_packet_out
*) oh
;
2827 COVERAGE_INC(ofproto_packet_out
);
2828 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2829 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2831 if (error
|| !buffer
) {
2839 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2840 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2841 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2846 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2848 ofpbuf_delete(buffer
);
2854 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2855 uint32_t config
, uint32_t mask
)
2857 mask
&= config
^ port
->opp
.config
;
2858 if (mask
& OFPPC_PORT_DOWN
) {
2859 if (config
& OFPPC_PORT_DOWN
) {
2860 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2862 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2865 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2866 if (mask
& REVALIDATE_BITS
) {
2867 COVERAGE_INC(ofproto_costly_flags
);
2868 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2869 p
->need_revalidate
= true;
2871 #undef REVALIDATE_BITS
2872 if (mask
& OFPPC_NO_FLOOD
) {
2873 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2874 refresh_port_groups(p
);
2876 if (mask
& OFPPC_NO_PACKET_IN
) {
2877 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2882 handle_port_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2883 struct ofp_header
*oh
)
2885 const struct ofp_port_mod
*opm
;
2886 struct ofport
*port
;
2889 error
= reject_slave_controller(ofconn
, oh
);
2893 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2897 opm
= (struct ofp_port_mod
*) oh
;
2899 port
= port_array_get(&p
->ports
,
2900 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2902 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2903 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2904 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2906 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2907 if (opm
->advertise
) {
2908 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2914 static struct ofpbuf
*
2915 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2917 struct ofp_stats_reply
*osr
;
2920 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2921 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2923 osr
->flags
= htons(0);
2927 static struct ofpbuf
*
2928 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2930 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2934 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2936 struct ofpbuf
*msg
= *msgp
;
2937 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2938 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2939 struct ofp_stats_reply
*reply
= msg
->data
;
2940 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2941 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2942 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2944 return ofpbuf_put_uninit(*msgp
, nbytes
);
2948 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2949 struct ofp_stats_request
*request
)
2951 struct ofp_desc_stats
*ods
;
2954 msg
= start_stats_reply(request
, sizeof *ods
);
2955 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2956 memset(ods
, 0, sizeof *ods
);
2957 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
2958 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
2959 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
2960 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
2961 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
2962 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2968 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2970 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2971 int *n_subrules
= n_subrules_
;
2979 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2980 struct ofp_stats_request
*request
)
2982 struct ofp_table_stats
*ots
;
2984 struct odp_stats dpstats
;
2985 int n_exact
, n_subrules
, n_wild
;
2987 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2989 /* Count rules of various kinds. */
2991 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2992 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2993 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2996 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2997 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2998 memset(ots
, 0, sizeof *ots
);
2999 ots
->table_id
= TABLEID_HASH
;
3000 strcpy(ots
->name
, "hash");
3001 ots
->wildcards
= htonl(0);
3002 ots
->max_entries
= htonl(dpstats
.max_capacity
);
3003 ots
->active_count
= htonl(n_exact
);
3004 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
3006 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
3008 /* Classifier table. */
3009 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
3010 memset(ots
, 0, sizeof *ots
);
3011 ots
->table_id
= TABLEID_CLASSIFIER
;
3012 strcpy(ots
->name
, "classifier");
3013 ots
->wildcards
= p
->tun_id_from_cookie
? htonl(OVSFW_ALL
)
3015 ots
->max_entries
= htonl(65536);
3016 ots
->active_count
= htonl(n_wild
);
3017 ots
->lookup_count
= htonll(0); /* XXX */
3018 ots
->matched_count
= htonll(0); /* XXX */
3020 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3025 append_port_stat(struct ofport
*port
, uint16_t port_no
, struct ofconn
*ofconn
,
3026 struct ofpbuf
**msgp
)
3028 struct netdev_stats stats
;
3029 struct ofp_port_stats
*ops
;
3031 /* Intentionally ignore return value, since errors will set
3032 * 'stats' to all-1s, which is correct for OpenFlow, and
3033 * netdev_get_stats() will log errors. */
3034 netdev_get_stats(port
->netdev
, &stats
);
3036 ops
= append_stats_reply(sizeof *ops
, ofconn
, msgp
);
3037 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
3038 memset(ops
->pad
, 0, sizeof ops
->pad
);
3039 ops
->rx_packets
= htonll(stats
.rx_packets
);
3040 ops
->tx_packets
= htonll(stats
.tx_packets
);
3041 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3042 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3043 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3044 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3045 ops
->rx_errors
= htonll(stats
.rx_errors
);
3046 ops
->tx_errors
= htonll(stats
.tx_errors
);
3047 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3048 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3049 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3050 ops
->collisions
= htonll(stats
.collisions
);
3054 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3055 struct ofp_stats_request
*osr
,
3058 struct ofp_port_stats_request
*psr
;
3059 struct ofp_port_stats
*ops
;
3061 struct ofport
*port
;
3062 unsigned int port_no
;
3064 if (arg_size
!= sizeof *psr
) {
3065 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3067 psr
= (struct ofp_port_stats_request
*) osr
->body
;
3069 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
3070 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3071 port
= port_array_get(&p
->ports
,
3072 ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3074 append_port_stat(port
, ntohs(psr
->port_no
), ofconn
, &msg
);
3077 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
3078 append_port_stat(port
, port_no
, ofconn
, &msg
);
3082 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3086 struct flow_stats_cbdata
{
3087 struct ofproto
*ofproto
;
3088 struct ofconn
*ofconn
;
3093 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3094 * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the
3095 * returned statistic include statistics for all of 'rule''s subrules. */
3097 query_stats(struct ofproto
*p
, struct rule
*rule
,
3098 uint64_t *packet_countp
, uint64_t *byte_countp
)
3100 uint64_t packet_count
, byte_count
;
3101 struct rule
*subrule
;
3102 struct odp_flow
*odp_flows
;
3105 /* Start from historical data for 'rule' itself that are no longer tracked
3106 * by the datapath. This counts, for example, subrules that have
3108 packet_count
= rule
->packet_count
;
3109 byte_count
= rule
->byte_count
;
3111 /* Prepare to ask the datapath for statistics on 'rule', or if it is
3112 * wildcarded then on all of its subrules.
3114 * Also, add any statistics that are not tracked by the datapath for each
3115 * subrule. This includes, for example, statistics for packets that were
3116 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3118 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
3119 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
3120 if (rule
->cr
.wc
.wildcards
) {
3122 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
3123 odp_flows
[i
++].key
= subrule
->cr
.flow
;
3124 packet_count
+= subrule
->packet_count
;
3125 byte_count
+= subrule
->byte_count
;
3128 odp_flows
[0].key
= rule
->cr
.flow
;
3131 /* Fetch up-to-date statistics from the datapath and add them in. */
3132 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
3134 for (i
= 0; i
< n_odp_flows
; i
++) {
3135 struct odp_flow
*odp_flow
= &odp_flows
[i
];
3136 packet_count
+= odp_flow
->stats
.n_packets
;
3137 byte_count
+= odp_flow
->stats
.n_bytes
;
3142 /* Return the stats to the caller. */
3143 *packet_countp
= packet_count
;
3144 *byte_countp
= byte_count
;
3148 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3150 struct rule
*rule
= rule_from_cls_rule(rule_
);
3151 struct flow_stats_cbdata
*cbdata
= cbdata_
;
3152 struct ofp_flow_stats
*ofs
;
3153 uint64_t packet_count
, byte_count
;
3154 size_t act_len
, len
;
3155 long long int tdiff
= time_msec() - rule
->created
;
3156 uint32_t sec
= tdiff
/ 1000;
3157 uint32_t msec
= tdiff
- (sec
* 1000);
3159 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3163 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3164 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3166 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3168 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
3169 ofs
->length
= htons(len
);
3170 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
3172 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3173 cbdata
->ofproto
->tun_id_from_cookie
, &ofs
->match
);
3174 ofs
->duration_sec
= htonl(sec
);
3175 ofs
->duration_nsec
= htonl(msec
* 1000000);
3176 ofs
->cookie
= rule
->flow_cookie
;
3177 ofs
->priority
= htons(rule
->cr
.priority
);
3178 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3179 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3180 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3181 ofs
->packet_count
= htonll(packet_count
);
3182 ofs
->byte_count
= htonll(byte_count
);
3183 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3187 table_id_to_include(uint8_t table_id
)
3189 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
3190 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
3191 : table_id
== 0xff ? CLS_INC_ALL
3196 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3197 const struct ofp_stats_request
*osr
,
3200 struct ofp_flow_stats_request
*fsr
;
3201 struct flow_stats_cbdata cbdata
;
3202 struct cls_rule target
;
3204 if (arg_size
!= sizeof *fsr
) {
3205 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3207 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
3209 COVERAGE_INC(ofproto_flows_req
);
3211 cbdata
.ofconn
= ofconn
;
3212 cbdata
.out_port
= fsr
->out_port
;
3213 cbdata
.msg
= start_stats_reply(osr
, 1024);
3214 cls_rule_from_match(&fsr
->match
, 0, false, 0, &target
);
3215 classifier_for_each_match(&p
->cls
, &target
,
3216 table_id_to_include(fsr
->table_id
),
3217 flow_stats_cb
, &cbdata
);
3218 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3222 struct flow_stats_ds_cbdata
{
3223 struct ofproto
*ofproto
;
3228 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
3230 struct rule
*rule
= rule_from_cls_rule(rule_
);
3231 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
3232 struct ds
*results
= cbdata
->results
;
3233 struct ofp_match match
;
3234 uint64_t packet_count
, byte_count
;
3235 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3237 /* Don't report on subrules. */
3238 if (rule
->super
!= NULL
) {
3242 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3243 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3244 cbdata
->ofproto
->tun_id_from_cookie
, &match
);
3246 ds_put_format(results
, "duration=%llds, ",
3247 (time_msec() - rule
->created
) / 1000);
3248 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3249 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3250 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3251 ofp_print_match(results
, &match
, true);
3252 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3253 ds_put_cstr(results
, "\n");
3256 /* Adds a pretty-printed description of all flows to 'results', including
3257 * those marked hidden by secchan (e.g., by in-band control). */
3259 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3261 struct ofp_match match
;
3262 struct cls_rule target
;
3263 struct flow_stats_ds_cbdata cbdata
;
3265 memset(&match
, 0, sizeof match
);
3266 match
.wildcards
= htonl(OVSFW_ALL
);
3269 cbdata
.results
= results
;
3271 cls_rule_from_match(&match
, 0, false, 0, &target
);
3272 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3273 flow_stats_ds_cb
, &cbdata
);
3276 struct aggregate_stats_cbdata
{
3277 struct ofproto
*ofproto
;
3279 uint64_t packet_count
;
3280 uint64_t byte_count
;
3285 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3287 struct rule
*rule
= rule_from_cls_rule(rule_
);
3288 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
3289 uint64_t packet_count
, byte_count
;
3291 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3295 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3297 cbdata
->packet_count
+= packet_count
;
3298 cbdata
->byte_count
+= byte_count
;
3303 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3304 const struct ofp_stats_request
*osr
,
3307 struct ofp_aggregate_stats_request
*asr
;
3308 struct ofp_aggregate_stats_reply
*reply
;
3309 struct aggregate_stats_cbdata cbdata
;
3310 struct cls_rule target
;
3313 if (arg_size
!= sizeof *asr
) {
3314 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3316 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
3318 COVERAGE_INC(ofproto_agg_request
);
3320 cbdata
.out_port
= asr
->out_port
;
3321 cbdata
.packet_count
= 0;
3322 cbdata
.byte_count
= 0;
3324 cls_rule_from_match(&asr
->match
, 0, false, 0, &target
);
3325 classifier_for_each_match(&p
->cls
, &target
,
3326 table_id_to_include(asr
->table_id
),
3327 aggregate_stats_cb
, &cbdata
);
3329 msg
= start_stats_reply(osr
, sizeof *reply
);
3330 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
3331 reply
->flow_count
= htonl(cbdata
.n_flows
);
3332 reply
->packet_count
= htonll(cbdata
.packet_count
);
3333 reply
->byte_count
= htonll(cbdata
.byte_count
);
3334 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3338 struct queue_stats_cbdata
{
3339 struct ofconn
*ofconn
;
3345 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3346 const struct netdev_queue_stats
*stats
)
3348 struct ofp_queue_stats
*reply
;
3350 reply
= append_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3351 reply
->port_no
= htons(cbdata
->port_no
);
3352 memset(reply
->pad
, 0, sizeof reply
->pad
);
3353 reply
->queue_id
= htonl(queue_id
);
3354 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3355 reply
->tx_packets
= htonll(stats
->tx_packets
);
3356 reply
->tx_errors
= htonll(stats
->tx_errors
);
3360 handle_queue_stats_dump_cb(uint32_t queue_id
,
3361 struct netdev_queue_stats
*stats
,
3364 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3366 put_queue_stats(cbdata
, queue_id
, stats
);
3370 handle_queue_stats_for_port(struct ofport
*port
, uint16_t port_no
,
3372 struct queue_stats_cbdata
*cbdata
)
3374 cbdata
->port_no
= port_no
;
3375 if (queue_id
== OFPQ_ALL
) {
3376 netdev_dump_queue_stats(port
->netdev
,
3377 handle_queue_stats_dump_cb
, cbdata
);
3379 struct netdev_queue_stats stats
;
3381 netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
);
3382 put_queue_stats(cbdata
, queue_id
, &stats
);
3387 handle_queue_stats_request(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3388 const struct ofp_stats_request
*osr
,
3391 struct ofp_queue_stats_request
*qsr
;
3392 struct queue_stats_cbdata cbdata
;
3393 struct ofport
*port
;
3394 unsigned int port_no
;
3397 if (arg_size
!= sizeof *qsr
) {
3398 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3400 qsr
= (struct ofp_queue_stats_request
*) osr
->body
;
3402 COVERAGE_INC(ofproto_queue_req
);
3404 cbdata
.ofconn
= ofconn
;
3405 cbdata
.msg
= start_stats_reply(osr
, 128);
3407 port_no
= ntohs(qsr
->port_no
);
3408 queue_id
= ntohl(qsr
->queue_id
);
3409 if (port_no
== OFPP_ALL
) {
3410 PORT_ARRAY_FOR_EACH (port
, &ofproto
->ports
, port_no
) {
3411 handle_queue_stats_for_port(port
, port_no
, queue_id
, &cbdata
);
3413 } else if (port_no
< ofproto
->max_ports
) {
3414 port
= port_array_get(&ofproto
->ports
, port_no
);
3416 handle_queue_stats_for_port(port
, port_no
, queue_id
, &cbdata
);
3419 ofpbuf_delete(cbdata
.msg
);
3420 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3422 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3428 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3429 struct ofp_header
*oh
)
3431 struct ofp_stats_request
*osr
;
3435 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
3440 osr
= (struct ofp_stats_request
*) oh
;
3442 switch (ntohs(osr
->type
)) {
3444 return handle_desc_stats_request(p
, ofconn
, osr
);
3447 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
3449 case OFPST_AGGREGATE
:
3450 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
3453 return handle_table_stats_request(p
, ofconn
, osr
);
3456 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
3459 return handle_queue_stats_request(p
, ofconn
, osr
, arg_size
);
3462 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3465 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
3469 static long long int
3470 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3472 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3476 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
3477 const struct odp_flow_stats
*stats
)
3479 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3480 if (used
> rule
->used
) {
3482 if (rule
->super
&& used
> rule
->super
->used
) {
3483 rule
->super
->used
= used
;
3485 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
3490 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
3491 const struct odp_flow_stats
*stats
)
3493 if (stats
->n_packets
) {
3494 update_time(ofproto
, rule
, stats
);
3495 rule
->packet_count
+= stats
->n_packets
;
3496 rule
->byte_count
+= stats
->n_bytes
;
3497 netflow_flow_update_flags(&rule
->nf_flow
, stats
->tcp_flags
);
3501 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3502 * in which no matching flow already exists in the flow table.
3504 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3505 * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
3506 * code as encoded by ofp_mkerr() on failure.
3508 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3511 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
3512 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3514 struct ofpbuf
*packet
;
3519 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
3523 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3525 if (classifier_rule_overlaps(&p
->cls
, &flow
, wildcards
,
3526 ntohs(ofm
->priority
))) {
3527 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3531 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
3532 n_actions
, ntohs(ofm
->idle_timeout
),
3533 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
3534 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
3535 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3536 p
->tun_id_from_cookie
, ofm
->cookie
, &rule
->cr
);
3539 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
3540 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3544 in_port
= UINT16_MAX
;
3547 rule_insert(p
, rule
, packet
, in_port
);
3548 ofpbuf_delete(packet
);
3552 static struct rule
*
3553 find_flow_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3558 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3560 return rule_from_cls_rule(classifier_find_rule_exactly(
3561 &p
->cls
, &flow
, wildcards
,
3562 ntohs(ofm
->priority
)));
3566 send_buffered_packet(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3567 struct rule
*rule
, const struct ofp_flow_mod
*ofm
)
3569 struct ofpbuf
*packet
;
3574 if (ofm
->buffer_id
== htonl(UINT32_MAX
)) {
3578 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3584 flow_extract(packet
, 0, in_port
, &flow
);
3585 rule_execute(ofproto
, rule
, packet
, &flow
);
3586 ofpbuf_delete(packet
);
3591 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3593 struct modify_flows_cbdata
{
3594 struct ofproto
*ofproto
;
3595 const struct ofp_flow_mod
*ofm
;
3600 static int modify_flow(struct ofproto
*, const struct ofp_flow_mod
*,
3601 size_t n_actions
, struct rule
*);
3602 static void modify_flows_cb(struct cls_rule
*, void *cbdata_
);
3604 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3605 * encoded by ofp_mkerr() on failure.
3607 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3610 modify_flows_loose(struct ofproto
*p
, struct ofconn
*ofconn
,
3611 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3613 struct modify_flows_cbdata cbdata
;
3614 struct cls_rule target
;
3618 cbdata
.n_actions
= n_actions
;
3619 cbdata
.match
= NULL
;
3621 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3624 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3625 modify_flows_cb
, &cbdata
);
3627 /* This credits the packet to whichever flow happened to happened to
3628 * match last. That's weird. Maybe we should do a lookup for the
3629 * flow that actually matches the packet? Who knows. */
3630 send_buffered_packet(p
, ofconn
, cbdata
.match
, ofm
);
3633 return add_flow(p
, ofconn
, ofm
, n_actions
);
3637 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3638 * code as encoded by ofp_mkerr() on failure.
3640 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3643 modify_flow_strict(struct ofproto
*p
, struct ofconn
*ofconn
,
3644 struct ofp_flow_mod
*ofm
, size_t n_actions
)
3646 struct rule
*rule
= find_flow_strict(p
, ofm
);
3647 if (rule
&& !rule_is_hidden(rule
)) {
3648 modify_flow(p
, ofm
, n_actions
, rule
);
3649 return send_buffered_packet(p
, ofconn
, rule
, ofm
);
3651 return add_flow(p
, ofconn
, ofm
, n_actions
);
3655 /* Callback for modify_flows_loose(). */
3657 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3659 struct rule
*rule
= rule_from_cls_rule(rule_
);
3660 struct modify_flows_cbdata
*cbdata
= cbdata_
;
3662 if (!rule_is_hidden(rule
)) {
3663 cbdata
->match
= rule
;
3664 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
, rule
);
3668 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3669 * been identified as a flow in 'p''s flow table to be modified, by changing
3670 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3671 * ofp_action[] structures). */
3673 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
3674 size_t n_actions
, struct rule
*rule
)
3676 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
3678 rule
->flow_cookie
= ofm
->cookie
;
3680 /* If the actions are the same, do nothing. */
3681 if (n_actions
== rule
->n_actions
3682 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
3687 /* Replace actions. */
3688 free(rule
->actions
);
3689 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
3690 rule
->n_actions
= n_actions
;
3692 /* Make sure that the datapath gets updated properly. */
3693 if (rule
->cr
.wc
.wildcards
) {
3694 COVERAGE_INC(ofproto_mod_wc_flow
);
3695 p
->need_revalidate
= true;
3697 rule_update_actions(p
, rule
);
3703 /* OFPFC_DELETE implementation. */
3705 struct delete_flows_cbdata
{
3706 struct ofproto
*ofproto
;
3710 static void delete_flows_cb(struct cls_rule
*, void *cbdata_
);
3711 static void delete_flow(struct ofproto
*, struct rule
*, uint16_t out_port
);
3713 /* Implements OFPFC_DELETE. */
3715 delete_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3717 struct delete_flows_cbdata cbdata
;
3718 struct cls_rule target
;
3721 cbdata
.out_port
= ofm
->out_port
;
3723 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3726 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3727 delete_flows_cb
, &cbdata
);
3730 /* Implements OFPFC_DELETE_STRICT. */
3732 delete_flow_strict(struct ofproto
*p
, struct ofp_flow_mod
*ofm
)
3734 struct rule
*rule
= find_flow_strict(p
, ofm
);
3736 delete_flow(p
, rule
, ofm
->out_port
);
3740 /* Callback for delete_flows_loose(). */
3742 delete_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3744 struct rule
*rule
= rule_from_cls_rule(rule_
);
3745 struct delete_flows_cbdata
*cbdata
= cbdata_
;
3747 delete_flow(cbdata
->ofproto
, rule
, cbdata
->out_port
);
3750 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
3751 * been identified as a flow to delete from 'p''s flow table, by deleting the
3752 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
3755 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
3756 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
3757 * specified 'out_port'. */
3759 delete_flow(struct ofproto
*p
, struct rule
*rule
, uint16_t out_port
)
3761 if (rule_is_hidden(rule
)) {
3765 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
3769 send_flow_removed(p
, rule
, time_msec(), OFPRR_DELETE
);
3770 rule_remove(p
, rule
);
3774 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3775 struct ofp_flow_mod
*ofm
)
3777 struct ofp_match orig_match
;
3781 error
= reject_slave_controller(ofconn
, &ofm
->header
);
3785 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3786 sizeof *ofm
->actions
, &n_actions
);
3791 /* We do not support the emergency flow cache. It will hopefully
3792 * get dropped from OpenFlow in the near future. */
3793 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3794 /* There isn't a good fit for an error code, so just state that the
3795 * flow table is full. */
3796 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3799 /* Normalize ofp->match. If normalization actually changes anything, then
3800 * log the differences. */
3801 ofm
->match
.pad1
[0] = ofm
->match
.pad2
[0] = 0;
3802 orig_match
= ofm
->match
;
3803 normalize_match(&ofm
->match
);
3804 if (memcmp(&ofm
->match
, &orig_match
, sizeof orig_match
)) {
3805 static struct vlog_rate_limit normal_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3806 if (!VLOG_DROP_INFO(&normal_rl
)) {
3807 char *old
= ofp_match_to_literal_string(&orig_match
);
3808 char *new = ofp_match_to_literal_string(&ofm
->match
);
3809 VLOG_INFO("%s: normalization changed ofp_match, details:",
3810 rconn_get_name(ofconn
->rconn
));
3811 VLOG_INFO(" pre: %s", old
);
3812 VLOG_INFO("post: %s", new);
3818 if (!ofm
->match
.wildcards
) {
3819 ofm
->priority
= htons(UINT16_MAX
);
3822 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3823 n_actions
, p
->max_ports
);
3828 switch (ntohs(ofm
->command
)) {
3830 return add_flow(p
, ofconn
, ofm
, n_actions
);
3833 return modify_flows_loose(p
, ofconn
, ofm
, n_actions
);
3835 case OFPFC_MODIFY_STRICT
:
3836 return modify_flow_strict(p
, ofconn
, ofm
, n_actions
);
3839 delete_flows_loose(p
, ofm
);
3842 case OFPFC_DELETE_STRICT
:
3843 delete_flow_strict(p
, ofm
);
3847 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3852 handle_tun_id_from_cookie(struct ofproto
*p
, struct nxt_tun_id_cookie
*msg
)
3856 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
3861 p
->tun_id_from_cookie
= !!msg
->set
;
3866 handle_role_request(struct ofproto
*ofproto
,
3867 struct ofconn
*ofconn
, struct nicira_header
*msg
)
3869 struct nx_role_request
*nrr
;
3870 struct nx_role_request
*reply
;
3874 if (ntohs(msg
->header
.length
) != sizeof *nrr
) {
3875 VLOG_WARN_RL(&rl
, "received role request of length %u (expected %zu)",
3876 ntohs(msg
->header
.length
), sizeof *nrr
);
3877 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3879 nrr
= (struct nx_role_request
*) msg
;
3881 if (ofconn
->type
!= OFCONN_PRIMARY
) {
3882 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
3884 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3887 role
= ntohl(nrr
->role
);
3888 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
3889 && role
!= NX_ROLE_SLAVE
) {
3890 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
3892 /* There's no good error code for this. */
3893 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
3896 if (role
== NX_ROLE_MASTER
) {
3897 struct ofconn
*other
;
3899 HMAP_FOR_EACH (other
, struct ofconn
, hmap_node
,
3900 &ofproto
->controllers
) {
3901 if (other
->role
== NX_ROLE_MASTER
) {
3902 other
->role
= NX_ROLE_SLAVE
;
3906 ofconn
->role
= role
;
3908 reply
= make_openflow_xid(sizeof *reply
, OFPT_VENDOR
, msg
->header
.xid
,
3910 reply
->nxh
.vendor
= htonl(NX_VENDOR_ID
);
3911 reply
->nxh
.subtype
= htonl(NXT_ROLE_REPLY
);
3912 reply
->role
= htonl(role
);
3913 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3919 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3921 struct ofp_vendor_header
*ovh
= msg
;
3922 struct nicira_header
*nh
;
3924 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3925 VLOG_WARN_RL(&rl
, "received vendor message of length %u "
3926 "(expected at least %zu)",
3927 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
3928 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3930 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3931 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3933 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3934 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %u "
3935 "(expected at least %zu)",
3936 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
3937 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3941 switch (ntohl(nh
->subtype
)) {
3942 case NXT_STATUS_REQUEST
:
3943 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3946 case NXT_TUN_ID_FROM_COOKIE
:
3947 return handle_tun_id_from_cookie(p
, msg
);
3949 case NXT_ROLE_REQUEST
:
3950 return handle_role_request(p
, ofconn
, msg
);
3953 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3957 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3959 struct ofp_header
*ob
;
3962 /* Currently, everything executes synchronously, so we can just
3963 * immediately send the barrier reply. */
3964 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
3965 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3970 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
3971 struct ofpbuf
*ofp_msg
)
3973 struct ofp_header
*oh
= ofp_msg
->data
;
3976 COVERAGE_INC(ofproto_recv_openflow
);
3978 case OFPT_ECHO_REQUEST
:
3979 error
= handle_echo_request(ofconn
, oh
);
3982 case OFPT_ECHO_REPLY
:
3986 case OFPT_FEATURES_REQUEST
:
3987 error
= handle_features_request(p
, ofconn
, oh
);
3990 case OFPT_GET_CONFIG_REQUEST
:
3991 error
= handle_get_config_request(p
, ofconn
, oh
);
3994 case OFPT_SET_CONFIG
:
3995 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
3998 case OFPT_PACKET_OUT
:
3999 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
4003 error
= handle_port_mod(p
, ofconn
, oh
);
4007 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
4010 case OFPT_STATS_REQUEST
:
4011 error
= handle_stats_request(p
, ofconn
, oh
);
4015 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
4018 case OFPT_BARRIER_REQUEST
:
4019 error
= handle_barrier_request(ofconn
, oh
);
4023 if (VLOG_IS_WARN_ENABLED()) {
4024 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4025 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4028 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4033 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4038 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4040 struct odp_msg
*msg
= packet
->data
;
4042 struct ofpbuf payload
;
4045 payload
.data
= msg
+ 1;
4046 payload
.size
= msg
->length
- sizeof *msg
;
4047 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
4049 /* Check with in-band control to see if this packet should be sent
4050 * to the local port regardless of the flow table. */
4051 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
4052 union odp_action action
;
4054 memset(&action
, 0, sizeof(action
));
4055 action
.output
.type
= ODPAT_OUTPUT
;
4056 action
.output
.port
= ODPP_LOCAL
;
4057 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
4060 rule
= lookup_valid_rule(p
, &flow
);
4062 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4063 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
4065 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4066 COVERAGE_INC(ofproto_no_packet_in
);
4067 /* XXX install 'drop' flow entry */
4068 ofpbuf_delete(packet
);
4072 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
4075 COVERAGE_INC(ofproto_packet_in
);
4076 send_packet_in(p
, packet
);
4080 if (rule
->cr
.wc
.wildcards
) {
4081 rule
= rule_create_subrule(p
, rule
, &flow
);
4082 rule_make_actions(p
, rule
, packet
);
4084 if (!rule
->may_install
) {
4085 /* The rule is not installable, that is, we need to process every
4086 * packet, so process the current packet and set its actions into
4088 rule_make_actions(p
, rule
, packet
);
4090 /* XXX revalidate rule if it needs it */
4094 rule_execute(p
, rule
, &payload
, &flow
);
4095 rule_reinstall(p
, rule
);
4097 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4099 * Extra-special case for fail-open mode.
4101 * We are in fail-open mode and the packet matched the fail-open rule,
4102 * but we are connected to a controller too. We should send the packet
4103 * up to the controller in the hope that it will try to set up a flow
4104 * and thereby allow us to exit fail-open.
4106 * See the top-level comment in fail-open.c for more information.
4108 send_packet_in(p
, packet
);
4110 ofpbuf_delete(packet
);
4115 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4117 struct odp_msg
*msg
= packet
->data
;
4119 switch (msg
->type
) {
4120 case _ODPL_ACTION_NR
:
4121 COVERAGE_INC(ofproto_ctlr_action
);
4122 send_packet_in(p
, packet
);
4125 case _ODPL_SFLOW_NR
:
4127 ofproto_sflow_received(p
->sflow
, msg
);
4129 ofpbuf_delete(packet
);
4133 handle_odp_miss_msg(p
, packet
);
4137 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
4144 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
4146 struct rule
*sub
= rule_from_cls_rule(sub_
);
4147 struct revalidate_cbdata
*cbdata
= cbdata_
;
4149 if (cbdata
->revalidate_all
4150 || (cbdata
->revalidate_subrules
&& sub
->super
)
4151 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
4152 revalidate_rule(cbdata
->ofproto
, sub
);
4157 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
4159 const flow_t
*flow
= &rule
->cr
.flow
;
4161 COVERAGE_INC(ofproto_revalidate_rule
);
4164 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
4166 rule_remove(p
, rule
);
4168 } else if (super
!= rule
->super
) {
4169 COVERAGE_INC(ofproto_revalidate_moved
);
4170 list_remove(&rule
->list
);
4171 list_push_back(&super
->list
, &rule
->list
);
4172 rule
->super
= super
;
4173 rule
->hard_timeout
= super
->hard_timeout
;
4174 rule
->idle_timeout
= super
->idle_timeout
;
4175 rule
->created
= super
->created
;
4180 rule_update_actions(p
, rule
);
4184 static struct ofpbuf
*
4185 compose_flow_removed(struct ofproto
*p
, const struct rule
*rule
,
4186 long long int now
, uint8_t reason
)
4188 struct ofp_flow_removed
*ofr
;
4190 long long int tdiff
= now
- rule
->created
;
4191 uint32_t sec
= tdiff
/ 1000;
4192 uint32_t msec
= tdiff
- (sec
* 1000);
4194 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
4195 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, p
->tun_id_from_cookie
,
4197 ofr
->cookie
= rule
->flow_cookie
;
4198 ofr
->priority
= htons(rule
->cr
.priority
);
4199 ofr
->reason
= reason
;
4200 ofr
->duration_sec
= htonl(sec
);
4201 ofr
->duration_nsec
= htonl(msec
* 1000000);
4202 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4203 ofr
->packet_count
= htonll(rule
->packet_count
);
4204 ofr
->byte_count
= htonll(rule
->byte_count
);
4210 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
4212 assert(rule
->installed
);
4213 assert(!rule
->cr
.wc
.wildcards
);
4216 rule_remove(ofproto
, rule
);
4218 rule_uninstall(ofproto
, rule
);
4223 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
4224 long long int now
, uint8_t reason
)
4226 struct ofconn
*ofconn
;
4227 struct ofconn
*prev
;
4228 struct ofpbuf
*buf
= NULL
;
4230 /* We limit the maximum number of queued flow expirations it by accounting
4231 * them under the counter for replies. That works because preventing
4232 * OpenFlow requests from being processed also prevents new flows from
4233 * being added (and expiring). (It also prevents processing OpenFlow
4234 * requests that would not add new flows, so it is imperfect.) */
4237 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
4238 if (rule
->send_flow_removed
&& rconn_is_connected(ofconn
->rconn
)
4239 && ofconn_receives_async_msgs(ofconn
)) {
4241 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
4243 buf
= compose_flow_removed(p
, rule
, now
, reason
);
4249 queue_tx(buf
, prev
, prev
->reply_counter
);
4255 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
4257 struct ofproto
*p
= p_
;
4258 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
4259 long long int hard_expire
, idle_expire
, expire
, now
;
4261 hard_expire
= (rule
->hard_timeout
4262 ? rule
->created
+ rule
->hard_timeout
* 1000
4264 idle_expire
= (rule
->idle_timeout
4265 && (rule
->super
|| list_is_empty(&rule
->list
))
4266 ? rule
->used
+ rule
->idle_timeout
* 1000
4268 expire
= MIN(hard_expire
, idle_expire
);
4272 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
4273 uninstall_idle_flow(p
, rule
);
4274 } else if (!rule
->cr
.wc
.wildcards
) {
4275 active_timeout(p
, rule
);
4281 COVERAGE_INC(ofproto_expired
);
4283 /* Update stats. This code will be a no-op if the rule expired
4284 * due to an idle timeout. */
4285 if (rule
->cr
.wc
.wildcards
) {
4286 struct rule
*subrule
, *next
;
4287 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
4288 rule_remove(p
, subrule
);
4291 rule_uninstall(p
, rule
);
4294 if (!rule_is_hidden(rule
)) {
4295 send_flow_removed(p
, rule
, now
,
4297 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
4299 rule_remove(p
, rule
);
4303 active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
4305 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
4306 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
4307 struct ofexpired expired
;
4308 struct odp_flow odp_flow
;
4310 /* Get updated flow stats. */
4311 memset(&odp_flow
, 0, sizeof odp_flow
);
4312 if (rule
->installed
) {
4313 odp_flow
.key
= rule
->cr
.flow
;
4314 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
4315 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
4317 if (odp_flow
.stats
.n_packets
) {
4318 update_time(ofproto
, rule
, &odp_flow
.stats
);
4319 netflow_flow_update_flags(&rule
->nf_flow
,
4320 odp_flow
.stats
.tcp_flags
);
4324 expired
.flow
= rule
->cr
.flow
;
4325 expired
.packet_count
= rule
->packet_count
+
4326 odp_flow
.stats
.n_packets
;
4327 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
4328 expired
.used
= rule
->used
;
4330 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
4332 /* Schedule us to send the accumulated records once we have
4333 * collected all of them. */
4334 poll_immediate_wake();
4339 update_used(struct ofproto
*p
)
4341 struct odp_flow
*flows
;
4346 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4351 for (i
= 0; i
< n_flows
; i
++) {
4352 struct odp_flow
*f
= &flows
[i
];
4355 rule
= rule_from_cls_rule(
4356 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
4357 if (!rule
|| !rule
->installed
) {
4358 COVERAGE_INC(ofproto_unexpected_rule
);
4359 dpif_flow_del(p
->dpif
, f
);
4363 update_time(p
, rule
, &f
->stats
);
4364 rule_account(p
, rule
, f
->stats
.n_bytes
);
4369 /* pinsched callback for sending 'packet' on 'ofconn'. */
4371 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4373 struct ofconn
*ofconn
= ofconn_
;
4375 rconn_send_with_limit(ofconn
->rconn
, packet
,
4376 ofconn
->packet_in_counter
, 100);
4379 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4380 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4381 * packet scheduler for sending.
4383 * 'max_len' specifies the maximum number of bytes of the packet to send on
4384 * 'ofconn' (INT_MAX specifies no limit).
4386 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4387 * ownership is transferred to this function. */
4389 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4392 struct ofproto
*ofproto
= ofconn
->ofproto
;
4393 struct ofp_packet_in
*opi
= packet
->data
;
4394 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4395 int send_len
, trim_size
;
4399 if (opi
->reason
== OFPR_ACTION
) {
4400 buffer_id
= UINT32_MAX
;
4401 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4402 buffer_id
= pktbuf_get_null();
4403 } else if (!ofconn
->pktbuf
) {
4404 buffer_id
= UINT32_MAX
;
4406 struct ofpbuf payload
;
4407 payload
.data
= opi
->data
;
4408 payload
.size
= packet
->size
- offsetof(struct ofp_packet_in
, data
);
4409 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4412 /* Figure out how much of the packet to send. */
4413 send_len
= ntohs(opi
->total_len
);
4414 if (buffer_id
!= UINT32_MAX
) {
4415 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4417 send_len
= MIN(send_len
, max_len
);
4419 /* Adjust packet length and clone if necessary. */
4420 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4422 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4425 packet
->size
= trim_size
;
4428 /* Update packet headers. */
4429 opi
->buffer_id
= htonl(buffer_id
);
4430 update_openflow_length(packet
);
4432 /* Hand over to packet scheduler. It might immediately call into
4433 * do_send_packet_in() or it might buffer it for a while (until a later
4434 * call to pinsched_run()). */
4435 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4436 packet
, do_send_packet_in
, ofconn
);
4439 /* Replace struct odp_msg header in 'packet' by equivalent struct
4440 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4441 * returned by dpif_recv()).
4443 * The conversion is not complete: the caller still needs to trim any unneeded
4444 * payload off the end of the buffer, set the length in the OpenFlow header,
4445 * and set buffer_id. Those require us to know the controller settings and so
4446 * must be done on a per-controller basis.
4448 * Returns the maximum number of bytes of the packet that should be sent to
4449 * the controller (INT_MAX if no limit). */
4451 do_convert_to_packet_in(struct ofpbuf
*packet
)
4453 struct odp_msg
*msg
= packet
->data
;
4454 struct ofp_packet_in
*opi
;
4460 /* Extract relevant header fields */
4461 if (msg
->type
== _ODPL_ACTION_NR
) {
4462 reason
= OFPR_ACTION
;
4465 reason
= OFPR_NO_MATCH
;
4468 total_len
= msg
->length
- sizeof *msg
;
4469 in_port
= odp_port_to_ofp_port(msg
->port
);
4471 /* Repurpose packet buffer by overwriting header. */
4472 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4473 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4474 opi
->header
.version
= OFP_VERSION
;
4475 opi
->header
.type
= OFPT_PACKET_IN
;
4476 opi
->total_len
= htons(total_len
);
4477 opi
->in_port
= htons(in_port
);
4478 opi
->reason
= reason
;
4483 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4484 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4485 * as necessary according to their individual configurations.
4487 * 'packet' must have sufficient headroom to convert it into a struct
4488 * ofp_packet_in (e.g. as returned by dpif_recv()).
4490 * Takes ownership of 'packet'. */
4492 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
4494 struct ofconn
*ofconn
, *prev
;
4497 max_len
= do_convert_to_packet_in(packet
);
4500 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &ofproto
->all_conns
) {
4501 if (ofconn_receives_async_msgs(ofconn
)) {
4503 schedule_packet_in(prev
, packet
, max_len
, true);
4509 schedule_packet_in(prev
, packet
, max_len
, false);
4511 ofpbuf_delete(packet
);
4516 pick_datapath_id(const struct ofproto
*ofproto
)
4518 const struct ofport
*port
;
4520 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
4522 uint8_t ea
[ETH_ADDR_LEN
];
4525 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4527 return eth_addr_to_uint64(ea
);
4529 VLOG_WARN("could not get MAC address for %s (%s)",
4530 netdev_get_name(port
->netdev
), strerror(error
));
4532 return ofproto
->fallback_dpid
;
4536 pick_fallback_dpid(void)
4538 uint8_t ea
[ETH_ADDR_LEN
];
4539 eth_addr_nicira_random(ea
);
4540 return eth_addr_to_uint64(ea
);
4544 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
4545 struct odp_actions
*actions
, tag_type
*tags
,
4546 uint16_t *nf_output_iface
, void *ofproto_
)
4548 struct ofproto
*ofproto
= ofproto_
;
4551 /* Drop frames for reserved multicast addresses. */
4552 if (eth_addr_is_reserved(flow
->dl_dst
)) {
4556 /* Learn source MAC (but don't try to learn from revalidation). */
4557 if (packet
!= NULL
) {
4558 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
4560 GRAT_ARP_LOCK_NONE
);
4562 /* The log messages here could actually be useful in debugging,
4563 * so keep the rate limit relatively high. */
4564 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
4565 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
4566 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
4567 ofproto_revalidate(ofproto
, rev_tag
);
4571 /* Determine output port. */
4572 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
4575 add_output_group_action(actions
, DP_GROUP_FLOOD
, nf_output_iface
);
4576 } else if (out_port
!= flow
->in_port
) {
4577 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
4578 *nf_output_iface
= out_port
;
4586 static const struct ofhooks default_ofhooks
= {
4588 default_normal_ofhook_cb
,