2 * Copyright (c) 2009, 2010 Nicira Networks.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
22 #include <sys/socket.h>
24 #include <netinet/in.h>
27 #include "byte-order.h"
28 #include "classifier.h"
30 #include "discovery.h"
32 #include "dynamic-string.h"
33 #include "fail-open.h"
37 #include "mac-learning.h"
41 #include "ofp-print.h"
43 #include "ofproto-sflow.h"
45 #include "openflow/nicira-ext.h"
46 #include "openflow/openflow.h"
47 #include "openvswitch/datapath-protocol.h"
51 #include "poll-loop.h"
55 #include "stream-ssl.h"
63 VLOG_DEFINE_THIS_MODULE(ofproto
);
65 #include "sflow_api.h"
68 struct hmap_node hmap_node
; /* In struct ofproto's "ports" hmap. */
69 struct netdev
*netdev
;
70 struct ofp_phy_port opp
; /* In host byte order. */
74 static void ofport_free(struct ofport
*);
75 static void hton_ofp_phy_port(struct ofp_phy_port
*);
77 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
78 const struct flow
*, struct ofproto
*,
79 const struct ofpbuf
*packet
,
80 struct odp_actions
*out
, tag_type
*tags
,
81 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
86 ovs_be64 flow_cookie
; /* Controller-issued identifier. */
87 uint16_t idle_timeout
; /* In seconds from time of last use. */
88 uint16_t hard_timeout
; /* In seconds from time of creation. */
89 bool send_flow_removed
; /* Send a flow removed message? */
90 long long int used
; /* Last-used time (0 if never used). */
91 long long int created
; /* Creation time. */
92 uint64_t packet_count
; /* Number of packets received. */
93 uint64_t byte_count
; /* Number of bytes received. */
94 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
95 tag_type tags
; /* Tags (set only by hooks). */
96 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
98 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
99 * exact-match rule (having cr.wc.wildcards of 0) generated from the
100 * wildcard rule 'super'. In this case, 'list' is an element of the
103 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
104 * a list of subrules. A super-rule with no wildcards (where
105 * cr.wc.wildcards is 0) will never have any subrules. */
111 * 'n_actions' is the number of elements in the 'actions' array. A single
112 * action may take up more more than one element's worth of space.
114 * A subrule has no actions (it uses the super-rule's actions). */
116 union ofp_action
*actions
;
120 * A super-rule with wildcard fields never has ODP actions (since the
121 * datapath only supports exact-match flows). */
122 bool installed
; /* Installed in datapath? */
123 bool may_install
; /* True ordinarily; false if actions must
124 * be reassessed for every packet. */
126 union odp_action
*odp_actions
;
130 rule_is_hidden(const struct rule
*rule
)
132 /* Subrules are merely an implementation detail, so hide them from the
134 if (rule
->super
!= NULL
) {
138 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
139 * (e.g. by in-band control) and are intentionally hidden from the
141 if (rule
->cr
.priority
> UINT16_MAX
) {
148 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
149 const union ofp_action
*, size_t n_actions
,
150 uint16_t idle_timeout
, uint16_t hard_timeout
,
151 ovs_be64 flow_cookie
, bool send_flow_removed
);
152 static void rule_free(struct rule
*);
153 static void rule_destroy(struct ofproto
*, struct rule
*);
154 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
155 static void rule_insert(struct ofproto
*, struct rule
*,
156 struct ofpbuf
*packet
, uint16_t in_port
);
157 static void rule_remove(struct ofproto
*, struct rule
*);
158 static bool rule_make_actions(struct ofproto
*, struct rule
*,
159 const struct ofpbuf
*packet
);
160 static void rule_install(struct ofproto
*, struct rule
*,
161 struct rule
*displaced_rule
);
162 static void rule_uninstall(struct ofproto
*, struct rule
*);
163 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
164 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
165 long long int now
, uint8_t reason
);
167 /* ofproto supports two kinds of OpenFlow connections:
169 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
170 * maintains persistent connections to these controllers and by default
171 * sends them asynchronous messages such as packet-ins.
173 * - "Service" connections, e.g. from ovs-ofctl. When these connections
174 * drop, it is the other side's responsibility to reconnect them if
175 * necessary. ofproto does not send them asynchronous messages by default.
177 * Currently, active (tcp, ssl, unix) connections are always "primary"
178 * connections and passive (ptcp, pssl, punix) connections are always "service"
179 * connections. There is no inherent reason for this, but it reflects the
183 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
184 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
187 /* A listener for incoming OpenFlow "service" connections. */
189 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
190 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
192 /* These are not used by ofservice directly. They are settings for
193 * accepted "struct ofconn"s from the pvconn. */
194 int probe_interval
; /* Max idle time before probing, in seconds. */
195 int rate_limit
; /* Max packet-in rate in packets per second. */
196 int burst_limit
; /* Limit on accumulating packet credits. */
199 static struct ofservice
*ofservice_lookup(struct ofproto
*,
201 static int ofservice_create(struct ofproto
*,
202 const struct ofproto_controller
*);
203 static void ofservice_reconfigure(struct ofservice
*,
204 const struct ofproto_controller
*);
205 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
207 /* An OpenFlow connection. */
209 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
210 struct list node
; /* In struct ofproto's "all_conns" list. */
211 struct rconn
*rconn
; /* OpenFlow connection. */
212 enum ofconn_type type
; /* Type. */
214 /* OFPT_PACKET_IN related data. */
215 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
216 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
217 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
218 int miss_send_len
; /* Bytes to send of buffered packets. */
220 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
221 * requests, and the maximum number before we stop reading OpenFlow
223 #define OFCONN_REPLY_MAX 100
224 struct rconn_packet_counter
*reply_counter
;
226 /* type == OFCONN_PRIMARY only. */
227 enum nx_role role
; /* Role. */
228 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
229 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
230 struct status_category
*ss
; /* Switch status category. */
231 enum ofproto_band band
; /* In-band or out-of-band? */
234 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
235 * "schedulers" array. Their values are 0 and 1, and their meanings and values
236 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
237 * case anything ever changes, check their values here. */
238 #define N_SCHEDULERS 2
239 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
240 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
241 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
242 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
244 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
246 static void ofconn_destroy(struct ofconn
*);
247 static void ofconn_run(struct ofconn
*, struct ofproto
*);
248 static void ofconn_wait(struct ofconn
*);
249 static bool ofconn_receives_async_msgs(const struct ofconn
*);
250 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
251 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
253 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
254 struct rconn_packet_counter
*counter
);
256 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
257 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
261 uint64_t datapath_id
; /* Datapath ID. */
262 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
263 char *mfr_desc
; /* Manufacturer. */
264 char *hw_desc
; /* Hardware. */
265 char *sw_desc
; /* Software version. */
266 char *serial_desc
; /* Serial number. */
267 char *dp_desc
; /* Datapath description. */
271 struct netdev_monitor
*netdev_monitor
;
272 struct hmap ports
; /* Contains "struct ofport"s. */
273 struct shash port_by_name
;
277 struct switch_status
*switch_status
;
278 struct fail_open
*fail_open
;
279 struct netflow
*netflow
;
280 struct ofproto_sflow
*sflow
;
282 /* In-band control. */
283 struct in_band
*in_band
;
284 long long int next_in_band_update
;
285 struct sockaddr_in
*extra_in_band_remotes
;
286 size_t n_extra_remotes
;
289 struct classifier cls
;
290 bool need_revalidate
;
291 long long int next_expiration
;
292 struct tag_set revalidate_set
;
293 int flow_format
; /* One of NXFF_*. */
295 /* OpenFlow connections. */
296 struct hmap controllers
; /* Controller "struct ofconn"s. */
297 struct list all_conns
; /* Contains "struct ofconn"s. */
298 enum ofproto_fail_mode fail_mode
;
300 /* OpenFlow listeners. */
301 struct hmap services
; /* Contains "struct ofservice"s. */
302 struct pvconn
**snoops
;
305 /* Hooks for ovs-vswitchd. */
306 const struct ofhooks
*ofhooks
;
309 /* Used by default ofhooks. */
310 struct mac_learning
*ml
;
313 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
315 static const struct ofhooks default_ofhooks
;
317 static uint64_t pick_datapath_id(const struct ofproto
*);
318 static uint64_t pick_fallback_dpid(void);
320 static int ofproto_expire(struct ofproto
*);
322 static void update_stats(struct ofproto
*, struct rule
*,
323 const struct odp_flow_stats
*);
324 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
325 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
327 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
329 static void handle_openflow(struct ofconn
*, struct ofproto
*,
332 static struct ofport
*get_port(const struct ofproto
*, uint16_t odp_port
);
333 static void update_port(struct ofproto
*, const char *devname
);
334 static int init_ports(struct ofproto
*);
335 static void reinit_ports(struct ofproto
*);
338 ofproto_create(const char *datapath
, const char *datapath_type
,
339 const struct ofhooks
*ofhooks
, void *aux
,
340 struct ofproto
**ofprotop
)
342 struct odp_stats stats
;
349 /* Connect to datapath and start listening for messages. */
350 error
= dpif_open(datapath
, datapath_type
, &dpif
);
352 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
355 error
= dpif_get_dp_stats(dpif
, &stats
);
357 VLOG_ERR("failed to obtain stats for datapath %s: %s",
358 datapath
, strerror(error
));
362 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
364 VLOG_ERR("failed to listen on datapath %s: %s",
365 datapath
, strerror(error
));
369 dpif_flow_flush(dpif
);
370 dpif_recv_purge(dpif
);
372 /* Initialize settings. */
373 p
= xzalloc(sizeof *p
);
374 p
->fallback_dpid
= pick_fallback_dpid();
375 p
->datapath_id
= p
->fallback_dpid
;
376 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
377 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
378 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
379 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
380 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
382 /* Initialize datapath. */
384 p
->netdev_monitor
= netdev_monitor_create();
385 hmap_init(&p
->ports
);
386 shash_init(&p
->port_by_name
);
387 p
->max_ports
= stats
.max_ports
;
389 /* Initialize submodules. */
390 p
->switch_status
= switch_status_create(p
);
396 /* Initialize flow table. */
397 classifier_init(&p
->cls
);
398 p
->need_revalidate
= false;
399 p
->next_expiration
= time_msec() + 1000;
400 tag_set_init(&p
->revalidate_set
);
401 p
->flow_format
= NXFF_OPENFLOW10
;
403 /* Initialize OpenFlow connections. */
404 list_init(&p
->all_conns
);
405 hmap_init(&p
->controllers
);
406 hmap_init(&p
->services
);
410 /* Initialize hooks. */
412 p
->ofhooks
= ofhooks
;
416 p
->ofhooks
= &default_ofhooks
;
418 p
->ml
= mac_learning_create();
421 /* Pick final datapath ID. */
422 p
->datapath_id
= pick_datapath_id(p
);
423 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
430 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
432 uint64_t old_dpid
= p
->datapath_id
;
433 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
434 if (p
->datapath_id
!= old_dpid
) {
435 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
437 /* Force all active connections to reconnect, since there is no way to
438 * notify a controller that the datapath ID has changed. */
439 ofproto_reconnect_controllers(p
);
444 is_discovery_controller(const struct ofproto_controller
*c
)
446 return !strcmp(c
->target
, "discover");
450 is_in_band_controller(const struct ofproto_controller
*c
)
452 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
455 /* Creates a new controller in 'ofproto'. Some of the settings are initially
456 * drawn from 'c', but update_controller() needs to be called later to finish
457 * the new ofconn's configuration. */
459 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
461 struct discovery
*discovery
;
462 struct ofconn
*ofconn
;
464 if (is_discovery_controller(c
)) {
465 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
466 ofproto
->dpif
, ofproto
->switch_status
,
475 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_PRIMARY
);
476 ofconn
->pktbuf
= pktbuf_create();
477 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
479 ofconn
->discovery
= discovery
;
481 char *name
= ofconn_make_name(ofproto
, c
->target
);
482 rconn_connect(ofconn
->rconn
, c
->target
, name
);
485 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
486 hash_string(c
->target
, 0));
489 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
490 * target or turn discovery on or off (these are done by creating new ofconns
491 * and deleting old ones), but it can update the rest of an ofconn's
494 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
498 ofconn
->band
= (is_in_band_controller(c
)
499 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
501 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
503 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
504 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
506 if (ofconn
->discovery
) {
507 discovery_set_update_resolv_conf(ofconn
->discovery
,
508 c
->update_resolv_conf
);
509 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
512 ofconn_set_rate_limit(ofconn
, c
->rate_limit
, c
->burst_limit
);
516 ofconn_get_target(const struct ofconn
*ofconn
)
518 return ofconn
->discovery
? "discover" : rconn_get_target(ofconn
->rconn
);
521 static struct ofconn
*
522 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
524 struct ofconn
*ofconn
;
526 HMAP_FOR_EACH_WITH_HASH (ofconn
, hmap_node
,
527 hash_string(target
, 0), &ofproto
->controllers
) {
528 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
536 update_in_band_remotes(struct ofproto
*ofproto
)
538 const struct ofconn
*ofconn
;
539 struct sockaddr_in
*addrs
;
540 size_t max_addrs
, n_addrs
;
544 /* Allocate enough memory for as many remotes as we could possibly have. */
545 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
546 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
549 /* Add all the remotes. */
551 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
552 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
554 if (ofconn
->band
== OFPROTO_OUT_OF_BAND
) {
558 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
559 if (sin
->sin_addr
.s_addr
) {
560 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
563 if (ofconn
->discovery
) {
567 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
568 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
571 /* Create or update or destroy in-band.
573 * Ordinarily we only enable in-band if there's at least one remote
574 * address, but discovery needs the in-band rules for DHCP to be installed
575 * even before we know any remote addresses. */
576 if (n_addrs
|| discovery
) {
577 if (!ofproto
->in_band
) {
578 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
581 if (ofproto
->in_band
) {
582 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
584 ofproto
->next_in_band_update
= time_msec() + 1000;
586 in_band_destroy(ofproto
->in_band
);
587 ofproto
->in_band
= NULL
;
595 update_fail_open(struct ofproto
*p
)
597 struct ofconn
*ofconn
;
599 if (!hmap_is_empty(&p
->controllers
)
600 && p
->fail_mode
== OFPROTO_FAIL_STANDALONE
) {
601 struct rconn
**rconns
;
605 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
609 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
610 HMAP_FOR_EACH (ofconn
, hmap_node
, &p
->controllers
) {
611 rconns
[n
++] = ofconn
->rconn
;
614 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
615 /* p->fail_open takes ownership of 'rconns'. */
617 fail_open_destroy(p
->fail_open
);
623 ofproto_set_controllers(struct ofproto
*p
,
624 const struct ofproto_controller
*controllers
,
625 size_t n_controllers
)
627 struct shash new_controllers
;
628 struct ofconn
*ofconn
, *next_ofconn
;
629 struct ofservice
*ofservice
, *next_ofservice
;
633 /* Create newly configured controllers and services.
634 * Create a name to ofproto_controller mapping in 'new_controllers'. */
635 shash_init(&new_controllers
);
636 for (i
= 0; i
< n_controllers
; i
++) {
637 const struct ofproto_controller
*c
= &controllers
[i
];
639 if (!vconn_verify_name(c
->target
) || !strcmp(c
->target
, "discover")) {
640 if (!find_controller_by_target(p
, c
->target
)) {
641 add_controller(p
, c
);
643 } else if (!pvconn_verify_name(c
->target
)) {
644 if (!ofservice_lookup(p
, c
->target
) && ofservice_create(p
, c
)) {
648 VLOG_WARN_RL(&rl
, "%s: unsupported controller \"%s\"",
649 dpif_name(p
->dpif
), c
->target
);
653 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
656 /* Delete controllers that are no longer configured.
657 * Update configuration of all now-existing controllers. */
659 HMAP_FOR_EACH_SAFE (ofconn
, next_ofconn
, hmap_node
, &p
->controllers
) {
660 struct ofproto_controller
*c
;
662 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
664 ofconn_destroy(ofconn
);
666 update_controller(ofconn
, c
);
673 /* Delete services that are no longer configured.
674 * Update configuration of all now-existing services. */
675 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
676 struct ofproto_controller
*c
;
678 c
= shash_find_data(&new_controllers
,
679 pvconn_get_name(ofservice
->pvconn
));
681 ofservice_destroy(p
, ofservice
);
683 ofservice_reconfigure(ofservice
, c
);
687 shash_destroy(&new_controllers
);
689 update_in_band_remotes(p
);
692 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
693 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
694 struct ofconn
, hmap_node
);
695 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
696 rconn_status_cb
, ofconn
->rconn
);
701 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
703 p
->fail_mode
= fail_mode
;
707 /* Drops the connections between 'ofproto' and all of its controllers, forcing
708 * them to reconnect. */
710 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
712 struct ofconn
*ofconn
;
714 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
715 rconn_reconnect(ofconn
->rconn
);
720 any_extras_changed(const struct ofproto
*ofproto
,
721 const struct sockaddr_in
*extras
, size_t n
)
725 if (n
!= ofproto
->n_extra_remotes
) {
729 for (i
= 0; i
< n
; i
++) {
730 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
731 const struct sockaddr_in
*new = &extras
[i
];
733 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
734 old
->sin_port
!= new->sin_port
) {
742 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
743 * in-band control should guarantee access, in the same way that in-band
744 * control guarantees access to OpenFlow controllers. */
746 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
747 const struct sockaddr_in
*extras
, size_t n
)
749 if (!any_extras_changed(ofproto
, extras
, n
)) {
753 free(ofproto
->extra_in_band_remotes
);
754 ofproto
->n_extra_remotes
= n
;
755 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
757 update_in_band_remotes(ofproto
);
761 ofproto_set_desc(struct ofproto
*p
,
762 const char *mfr_desc
, const char *hw_desc
,
763 const char *sw_desc
, const char *serial_desc
,
766 struct ofp_desc_stats
*ods
;
769 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
770 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
771 sizeof ods
->mfr_desc
);
774 p
->mfr_desc
= xstrdup(mfr_desc
);
777 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
778 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
779 sizeof ods
->hw_desc
);
782 p
->hw_desc
= xstrdup(hw_desc
);
785 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
786 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
787 sizeof ods
->sw_desc
);
790 p
->sw_desc
= xstrdup(sw_desc
);
793 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
794 VLOG_WARN("truncating serial_desc, must be less than %zu "
796 sizeof ods
->serial_num
);
798 free(p
->serial_desc
);
799 p
->serial_desc
= xstrdup(serial_desc
);
802 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
803 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
804 sizeof ods
->dp_desc
);
807 p
->dp_desc
= xstrdup(dp_desc
);
812 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
813 const struct svec
*svec
)
815 struct pvconn
**pvconns
= *pvconnsp
;
816 size_t n_pvconns
= *n_pvconnsp
;
820 for (i
= 0; i
< n_pvconns
; i
++) {
821 pvconn_close(pvconns
[i
]);
825 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
827 for (i
= 0; i
< svec
->n
; i
++) {
828 const char *name
= svec
->names
[i
];
829 struct pvconn
*pvconn
;
832 error
= pvconn_open(name
, &pvconn
);
834 pvconns
[n_pvconns
++] = pvconn
;
836 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
844 *n_pvconnsp
= n_pvconns
;
850 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
852 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
856 ofproto_set_netflow(struct ofproto
*ofproto
,
857 const struct netflow_options
*nf_options
)
859 if (nf_options
&& nf_options
->collectors
.n
) {
860 if (!ofproto
->netflow
) {
861 ofproto
->netflow
= netflow_create();
863 return netflow_set_options(ofproto
->netflow
, nf_options
);
865 netflow_destroy(ofproto
->netflow
);
866 ofproto
->netflow
= NULL
;
872 ofproto_set_sflow(struct ofproto
*ofproto
,
873 const struct ofproto_sflow_options
*oso
)
875 struct ofproto_sflow
*os
= ofproto
->sflow
;
878 struct ofport
*ofport
;
880 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
881 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
882 ofproto_sflow_add_port(os
, ofport
->odp_port
,
883 netdev_get_name(ofport
->netdev
));
886 ofproto_sflow_set_options(os
, oso
);
888 ofproto_sflow_destroy(os
);
889 ofproto
->sflow
= NULL
;
894 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
896 return ofproto
->datapath_id
;
900 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
902 return !hmap_is_empty(&ofproto
->controllers
);
905 enum ofproto_fail_mode
906 ofproto_get_fail_mode(const struct ofproto
*p
)
912 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
916 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
917 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
922 ofproto_destroy(struct ofproto
*p
)
924 struct ofservice
*ofservice
, *next_ofservice
;
925 struct ofconn
*ofconn
, *next_ofconn
;
926 struct ofport
*ofport
, *next_ofport
;
933 /* Destroy fail-open and in-band early, since they touch the classifier. */
934 fail_open_destroy(p
->fail_open
);
937 in_band_destroy(p
->in_band
);
939 free(p
->extra_in_band_remotes
);
941 ofproto_flush_flows(p
);
942 classifier_destroy(&p
->cls
);
944 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
945 ofconn_destroy(ofconn
);
947 hmap_destroy(&p
->controllers
);
950 netdev_monitor_destroy(p
->netdev_monitor
);
951 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
952 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
955 shash_destroy(&p
->port_by_name
);
957 switch_status_destroy(p
->switch_status
);
958 netflow_destroy(p
->netflow
);
959 ofproto_sflow_destroy(p
->sflow
);
961 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
962 ofservice_destroy(p
, ofservice
);
964 hmap_destroy(&p
->services
);
966 for (i
= 0; i
< p
->n_snoops
; i
++) {
967 pvconn_close(p
->snoops
[i
]);
971 mac_learning_destroy(p
->ml
);
976 free(p
->serial_desc
);
979 hmap_destroy(&p
->ports
);
985 ofproto_run(struct ofproto
*p
)
987 int error
= ofproto_run1(p
);
989 error
= ofproto_run2(p
, false);
995 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
997 if (error
== ENOBUFS
) {
998 reinit_ports(ofproto
);
1000 update_port(ofproto
, devname
);
1005 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1006 * means that 'ofconn' is more interesting for monitoring than a lower return
1009 snoop_preference(const struct ofconn
*ofconn
)
1011 switch (ofconn
->role
) {
1012 case NX_ROLE_MASTER
:
1019 /* Shouldn't happen. */
1024 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1025 * Connects this vconn to a controller. */
1027 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1029 struct ofconn
*ofconn
, *best
;
1031 /* Pick a controller for monitoring. */
1033 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
1034 if (ofconn
->type
== OFCONN_PRIMARY
1035 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1041 rconn_add_monitor(best
->rconn
, vconn
);
1043 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1049 ofproto_run1(struct ofproto
*p
)
1051 struct ofconn
*ofconn
, *next_ofconn
;
1052 struct ofservice
*ofservice
;
1057 if (shash_is_empty(&p
->port_by_name
)) {
1061 for (i
= 0; i
< 50; i
++) {
1064 error
= dpif_recv(p
->dpif
, &buf
);
1066 if (error
== ENODEV
) {
1067 /* Someone destroyed the datapath behind our back. The caller
1068 * better destroy us and give up, because we're just going to
1069 * spin from here on out. */
1070 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1071 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1072 dpif_name(p
->dpif
));
1078 handle_odp_msg(p
, buf
);
1081 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1082 process_port_change(p
, error
, devname
);
1084 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1085 &devname
)) != EAGAIN
) {
1086 process_port_change(p
, error
, devname
);
1090 if (time_msec() >= p
->next_in_band_update
) {
1091 update_in_band_remotes(p
);
1093 in_band_run(p
->in_band
);
1096 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1097 ofconn_run(ofconn
, p
);
1100 /* Fail-open maintenance. Do this after processing the ofconns since
1101 * fail-open checks the status of the controller rconn. */
1103 fail_open_run(p
->fail_open
);
1106 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1107 struct vconn
*vconn
;
1110 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1112 struct rconn
*rconn
;
1115 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1116 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1117 rconn_connect_unreliably(rconn
, vconn
, name
);
1120 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1121 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1122 ofservice
->burst_limit
);
1123 } else if (retval
!= EAGAIN
) {
1124 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1128 for (i
= 0; i
< p
->n_snoops
; i
++) {
1129 struct vconn
*vconn
;
1132 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1134 add_snooper(p
, vconn
);
1135 } else if (retval
!= EAGAIN
) {
1136 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1140 if (time_msec() >= p
->next_expiration
) {
1141 int delay
= ofproto_expire(p
);
1142 p
->next_expiration
= time_msec() + delay
;
1143 COVERAGE_INC(ofproto_expiration
);
1147 netflow_run(p
->netflow
);
1150 ofproto_sflow_run(p
->sflow
);
1156 struct revalidate_cbdata
{
1157 struct ofproto
*ofproto
;
1158 bool revalidate_all
; /* Revalidate all exact-match rules? */
1159 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
1160 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
1164 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1166 if (p
->need_revalidate
|| revalidate_all
1167 || !tag_set_is_empty(&p
->revalidate_set
)) {
1168 struct revalidate_cbdata cbdata
;
1170 cbdata
.revalidate_all
= revalidate_all
;
1171 cbdata
.revalidate_subrules
= p
->need_revalidate
;
1172 cbdata
.revalidate_set
= p
->revalidate_set
;
1173 tag_set_init(&p
->revalidate_set
);
1174 COVERAGE_INC(ofproto_revalidate
);
1175 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
1176 p
->need_revalidate
= false;
1183 ofproto_wait(struct ofproto
*p
)
1185 struct ofservice
*ofservice
;
1186 struct ofconn
*ofconn
;
1189 dpif_recv_wait(p
->dpif
);
1190 dpif_port_poll_wait(p
->dpif
);
1191 netdev_monitor_poll_wait(p
->netdev_monitor
);
1192 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1193 ofconn_wait(ofconn
);
1196 poll_timer_wait_until(p
->next_in_band_update
);
1197 in_band_wait(p
->in_band
);
1200 fail_open_wait(p
->fail_open
);
1203 ofproto_sflow_wait(p
->sflow
);
1205 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1206 poll_immediate_wake();
1208 if (p
->need_revalidate
) {
1209 /* Shouldn't happen, but if it does just go around again. */
1210 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1211 poll_immediate_wake();
1212 } else if (p
->next_expiration
!= LLONG_MAX
) {
1213 poll_timer_wait_until(p
->next_expiration
);
1215 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1216 pvconn_wait(ofservice
->pvconn
);
1218 for (i
= 0; i
< p
->n_snoops
; i
++) {
1219 pvconn_wait(p
->snoops
[i
]);
1224 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1226 tag_set_add(&ofproto
->revalidate_set
, tag
);
1230 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1232 return &ofproto
->revalidate_set
;
1236 ofproto_is_alive(const struct ofproto
*p
)
1238 return !hmap_is_empty(&p
->controllers
);
1241 /* Deletes port number 'odp_port' from the datapath for 'ofproto'.
1243 * This is almost the same as calling dpif_port_del() directly on the
1244 * datapath, but it also makes 'ofproto' close its open netdev for the port
1245 * (if any). This makes it possible to create a new netdev of a different
1246 * type under the same name, which otherwise the netdev library would refuse
1247 * to do because of the conflict. (The netdev would eventually get closed on
1248 * the next trip through ofproto_run(), but this interface is more direct.)
1250 * Returns 0 if successful, otherwise a positive errno. */
1252 ofproto_port_del(struct ofproto
*ofproto
, uint16_t odp_port
)
1254 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1255 const char *name
= ofport
? (char *) ofport
->opp
.name
: "<unknown>";
1258 error
= dpif_port_del(ofproto
->dpif
, odp_port
);
1260 VLOG_ERR("%s: failed to remove port %"PRIu16
" (%s) interface (%s)",
1261 dpif_name(ofproto
->dpif
), odp_port
, name
, strerror(error
));
1262 } else if (ofport
) {
1263 /* 'name' is ofport->opp.name and update_port() is going to destroy
1264 * 'ofport'. Just in case update_port() refers to 'name' after it
1265 * destroys 'ofport', make a copy of it around the update_port()
1267 char *devname
= xstrdup(name
);
1268 update_port(ofproto
, devname
);
1274 /* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
1275 * true if 'odp_port' exists and should be included, false otherwise. */
1277 ofproto_port_is_floodable(struct ofproto
*ofproto
, uint16_t odp_port
)
1279 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1280 return ofport
&& !(ofport
->opp
.config
& OFPPC_NO_FLOOD
);
1284 ofproto_send_packet(struct ofproto
*p
, const struct flow
*flow
,
1285 const union ofp_action
*actions
, size_t n_actions
,
1286 const struct ofpbuf
*packet
)
1288 struct odp_actions odp_actions
;
1291 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1297 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1299 dpif_execute(p
->dpif
, odp_actions
.actions
, odp_actions
.n_actions
, packet
);
1304 ofproto_add_flow(struct ofproto
*p
, const struct flow
*flow
,
1305 uint32_t wildcards
, unsigned int priority
,
1306 const union ofp_action
*actions
, size_t n_actions
,
1310 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1311 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1313 cls_rule_from_flow(flow
, wildcards
, priority
, &rule
->cr
);
1314 rule_insert(p
, rule
, NULL
, 0);
1318 ofproto_delete_flow(struct ofproto
*ofproto
, const struct flow
*flow
,
1319 uint32_t wildcards
, unsigned int priority
)
1321 struct cls_rule target
;
1324 cls_rule_from_flow(flow
, wildcards
, priority
, &target
);
1325 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1328 rule_remove(ofproto
, rule
);
1333 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1335 struct rule
*rule
= rule_from_cls_rule(rule_
);
1336 struct ofproto
*ofproto
= ofproto_
;
1338 /* Mark the flow as not installed, even though it might really be
1339 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1340 * There is no point in uninstalling it individually since we are about to
1341 * blow away all the flows with dpif_flow_flush(). */
1342 rule
->installed
= false;
1344 rule_remove(ofproto
, rule
);
1348 ofproto_flush_flows(struct ofproto
*ofproto
)
1350 COVERAGE_INC(ofproto_flush
);
1351 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1352 dpif_flow_flush(ofproto
->dpif
);
1353 if (ofproto
->in_band
) {
1354 in_band_flushed(ofproto
->in_band
);
1356 if (ofproto
->fail_open
) {
1357 fail_open_flushed(ofproto
->fail_open
);
1362 reinit_ports(struct ofproto
*p
)
1364 struct svec devnames
;
1365 struct ofport
*ofport
;
1366 struct odp_port
*odp_ports
;
1370 COVERAGE_INC(ofproto_reinit_ports
);
1372 svec_init(&devnames
);
1373 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1374 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1376 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1377 for (i
= 0; i
< n_odp_ports
; i
++) {
1378 svec_add (&devnames
, odp_ports
[i
].devname
);
1382 svec_sort_unique(&devnames
);
1383 for (i
= 0; i
< devnames
.n
; i
++) {
1384 update_port(p
, devnames
.names
[i
]);
1386 svec_destroy(&devnames
);
1389 static struct ofport
*
1390 make_ofport(const struct odp_port
*odp_port
)
1392 struct netdev_options netdev_options
;
1393 enum netdev_flags flags
;
1394 struct ofport
*ofport
;
1395 struct netdev
*netdev
;
1398 memset(&netdev_options
, 0, sizeof netdev_options
);
1399 netdev_options
.name
= odp_port
->devname
;
1400 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1402 error
= netdev_open(&netdev_options
, &netdev
);
1404 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1405 "cannot be opened (%s)",
1406 odp_port
->devname
, odp_port
->port
,
1407 odp_port
->devname
, strerror(error
));
1411 ofport
= xmalloc(sizeof *ofport
);
1412 ofport
->netdev
= netdev
;
1413 ofport
->odp_port
= odp_port
->port
;
1414 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1415 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1416 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1417 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1418 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1420 netdev_get_flags(netdev
, &flags
);
1421 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1423 ofport
->opp
.state
= netdev_get_carrier(netdev
) ? 0 : OFPPS_LINK_DOWN
;
1425 netdev_get_features(netdev
,
1426 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1427 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1432 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1434 if (get_port(p
, odp_port
->port
)) {
1435 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1438 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1439 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1448 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1450 const struct ofp_phy_port
*a
= &a_
->opp
;
1451 const struct ofp_phy_port
*b
= &b_
->opp
;
1453 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1454 return (a
->port_no
== b
->port_no
1455 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1456 && !strcmp((char *) a
->name
, (char *) b
->name
)
1457 && a
->state
== b
->state
1458 && a
->config
== b
->config
1459 && a
->curr
== b
->curr
1460 && a
->advertised
== b
->advertised
1461 && a
->supported
== b
->supported
1462 && a
->peer
== b
->peer
);
1466 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1469 /* XXX Should limit the number of queued port status change messages. */
1470 struct ofconn
*ofconn
;
1471 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1472 struct ofp_port_status
*ops
;
1475 if (!ofconn_receives_async_msgs(ofconn
)) {
1479 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1480 ops
->reason
= reason
;
1481 ops
->desc
= ofport
->opp
;
1482 hton_ofp_phy_port(&ops
->desc
);
1483 queue_tx(b
, ofconn
, NULL
);
1488 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1490 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1492 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1493 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->odp_port
, 0));
1494 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1496 ofproto_sflow_add_port(p
->sflow
, ofport
->odp_port
, netdev_name
);
1501 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1503 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1504 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1505 shash_delete(&p
->port_by_name
,
1506 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1508 ofproto_sflow_del_port(p
->sflow
, ofport
->odp_port
);
1513 ofport_free(struct ofport
*ofport
)
1516 netdev_close(ofport
->netdev
);
1521 static struct ofport
*
1522 get_port(const struct ofproto
*ofproto
, uint16_t odp_port
)
1524 struct ofport
*port
;
1526 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1527 hash_int(odp_port
, 0), &ofproto
->ports
) {
1528 if (port
->odp_port
== odp_port
) {
1536 update_port(struct ofproto
*p
, const char *devname
)
1538 struct odp_port odp_port
;
1539 struct ofport
*old_ofport
;
1540 struct ofport
*new_ofport
;
1543 COVERAGE_INC(ofproto_update_port
);
1545 /* Query the datapath for port information. */
1546 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1548 /* Find the old ofport. */
1549 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1552 /* There's no port named 'devname' but there might be a port with
1553 * the same port number. This could happen if a port is deleted
1554 * and then a new one added in its place very quickly, or if a port
1555 * is renamed. In the former case we want to send an OFPPR_DELETE
1556 * and an OFPPR_ADD, and in the latter case we want to send a
1557 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1558 * the old port's ifindex against the new port, or perhaps less
1559 * reliably but more portably by comparing the old port's MAC
1560 * against the new port's MAC. However, this code isn't that smart
1561 * and always sends an OFPPR_MODIFY (XXX). */
1562 old_ofport
= get_port(p
, odp_port
.port
);
1564 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1565 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1566 "%s", strerror(error
));
1570 /* Create a new ofport. */
1571 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1573 /* Eliminate a few pathological cases. */
1574 if (!old_ofport
&& !new_ofport
) {
1576 } else if (old_ofport
&& new_ofport
) {
1577 /* Most of the 'config' bits are OpenFlow soft state, but
1578 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1579 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1580 * leaves the other bits 0.) */
1581 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1583 if (ofport_equal(old_ofport
, new_ofport
)) {
1584 /* False alarm--no change. */
1585 ofport_free(new_ofport
);
1590 /* Now deal with the normal cases. */
1592 ofport_remove(p
, old_ofport
);
1595 ofport_install(p
, new_ofport
);
1597 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1598 (!old_ofport
? OFPPR_ADD
1599 : !new_ofport
? OFPPR_DELETE
1601 ofport_free(old_ofport
);
1605 init_ports(struct ofproto
*p
)
1607 struct odp_port
*ports
;
1612 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1617 for (i
= 0; i
< n_ports
; i
++) {
1618 const struct odp_port
*odp_port
= &ports
[i
];
1619 if (!ofport_conflicts(p
, odp_port
)) {
1620 struct ofport
*ofport
= make_ofport(odp_port
);
1622 ofport_install(p
, ofport
);
1630 static struct ofconn
*
1631 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1633 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1634 ofconn
->ofproto
= p
;
1635 list_push_back(&p
->all_conns
, &ofconn
->node
);
1636 ofconn
->rconn
= rconn
;
1637 ofconn
->type
= type
;
1638 ofconn
->role
= NX_ROLE_OTHER
;
1639 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1640 ofconn
->pktbuf
= NULL
;
1641 ofconn
->miss_send_len
= 0;
1642 ofconn
->reply_counter
= rconn_packet_counter_create ();
1647 ofconn_destroy(struct ofconn
*ofconn
)
1649 if (ofconn
->type
== OFCONN_PRIMARY
) {
1650 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1652 discovery_destroy(ofconn
->discovery
);
1654 list_remove(&ofconn
->node
);
1655 switch_status_unregister(ofconn
->ss
);
1656 rconn_destroy(ofconn
->rconn
);
1657 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1658 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1659 pktbuf_destroy(ofconn
->pktbuf
);
1664 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1669 if (ofconn
->discovery
) {
1670 char *controller_name
;
1671 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1672 discovery_question_connectivity(ofconn
->discovery
);
1674 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1675 if (controller_name
) {
1676 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1677 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1680 rconn_disconnect(ofconn
->rconn
);
1685 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1686 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1689 rconn_run(ofconn
->rconn
);
1691 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1692 /* Limit the number of iterations to prevent other tasks from
1694 for (iteration
= 0; iteration
< 50; iteration
++) {
1695 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1700 fail_open_maybe_recover(p
->fail_open
);
1702 handle_openflow(ofconn
, p
, of_msg
);
1703 ofpbuf_delete(of_msg
);
1707 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1708 ofconn_destroy(ofconn
);
1713 ofconn_wait(struct ofconn
*ofconn
)
1717 if (ofconn
->discovery
) {
1718 discovery_wait(ofconn
->discovery
);
1720 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1721 pinsched_wait(ofconn
->schedulers
[i
]);
1723 rconn_run_wait(ofconn
->rconn
);
1724 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1725 rconn_recv_wait(ofconn
->rconn
);
1727 COVERAGE_INC(ofproto_ofconn_stuck
);
1731 /* Returns true if 'ofconn' should receive asynchronous messages. */
1733 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1735 if (ofconn
->type
== OFCONN_PRIMARY
) {
1736 /* Primary controllers always get asynchronous messages unless they
1737 * have configured themselves as "slaves". */
1738 return ofconn
->role
!= NX_ROLE_SLAVE
;
1740 /* Service connections don't get asynchronous messages unless they have
1741 * explicitly asked for them by setting a nonzero miss send length. */
1742 return ofconn
->miss_send_len
> 0;
1746 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1747 * and 'target', suitable for use in log messages for identifying the
1750 * The name is dynamically allocated. The caller should free it (with free())
1751 * when it is no longer needed. */
1753 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1755 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1759 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1763 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1764 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1768 *s
= pinsched_create(rate
, burst
,
1769 ofconn
->ofproto
->switch_status
);
1771 pinsched_set_limits(*s
, rate
, burst
);
1774 pinsched_destroy(*s
);
1781 ofservice_reconfigure(struct ofservice
*ofservice
,
1782 const struct ofproto_controller
*c
)
1784 ofservice
->probe_interval
= c
->probe_interval
;
1785 ofservice
->rate_limit
= c
->rate_limit
;
1786 ofservice
->burst_limit
= c
->burst_limit
;
1789 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1790 * positive errno value. */
1792 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1794 struct ofservice
*ofservice
;
1795 struct pvconn
*pvconn
;
1798 error
= pvconn_open(c
->target
, &pvconn
);
1803 ofservice
= xzalloc(sizeof *ofservice
);
1804 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1805 hash_string(c
->target
, 0));
1806 ofservice
->pvconn
= pvconn
;
1808 ofservice_reconfigure(ofservice
, c
);
1814 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1816 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1817 pvconn_close(ofservice
->pvconn
);
1821 /* Finds and returns the ofservice within 'ofproto' that has the given
1822 * 'target', or a null pointer if none exists. */
1823 static struct ofservice
*
1824 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1826 struct ofservice
*ofservice
;
1828 HMAP_FOR_EACH_WITH_HASH (ofservice
, node
, hash_string(target
, 0),
1829 &ofproto
->services
) {
1830 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1837 /* Caller is responsible for initializing the 'cr' member of the returned
1839 static struct rule
*
1840 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1841 const union ofp_action
*actions
, size_t n_actions
,
1842 uint16_t idle_timeout
, uint16_t hard_timeout
,
1843 ovs_be64 flow_cookie
, bool send_flow_removed
)
1845 struct rule
*rule
= xzalloc(sizeof *rule
);
1846 rule
->idle_timeout
= idle_timeout
;
1847 rule
->hard_timeout
= hard_timeout
;
1848 rule
->flow_cookie
= flow_cookie
;
1849 rule
->used
= rule
->created
= time_msec();
1850 rule
->send_flow_removed
= send_flow_removed
;
1851 rule
->super
= super
;
1853 list_push_back(&super
->list
, &rule
->list
);
1855 list_init(&rule
->list
);
1857 if (n_actions
> 0) {
1858 rule
->n_actions
= n_actions
;
1859 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1861 netflow_flow_clear(&rule
->nf_flow
);
1862 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1867 static struct rule
*
1868 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1870 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1874 rule_free(struct rule
*rule
)
1876 free(rule
->actions
);
1877 free(rule
->odp_actions
);
1881 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1882 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1883 * through all of its subrules and revalidates them, destroying any that no
1884 * longer has a super-rule (which is probably all of them).
1886 * Before calling this function, the caller must make have removed 'rule' from
1887 * the classifier. If 'rule' is an exact-match rule, the caller is also
1888 * responsible for ensuring that it has been uninstalled from the datapath. */
1890 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1893 struct rule
*subrule
, *next
;
1894 LIST_FOR_EACH_SAFE (subrule
, next
, list
, &rule
->list
) {
1895 revalidate_rule(ofproto
, subrule
);
1898 list_remove(&rule
->list
);
1904 rule_has_out_port(const struct rule
*rule
, ovs_be16 out_port
)
1906 const union ofp_action
*oa
;
1907 struct actions_iterator i
;
1909 if (out_port
== htons(OFPP_NONE
)) {
1912 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1913 oa
= actions_next(&i
)) {
1914 if (action_outputs_to_port(oa
, out_port
)) {
1921 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
1922 * 'packet', which arrived on 'in_port'.
1924 * Takes ownership of 'packet'. */
1926 execute_odp_actions(struct ofproto
*ofproto
, uint16_t in_port
,
1927 const union odp_action
*actions
, size_t n_actions
,
1928 struct ofpbuf
*packet
)
1930 if (n_actions
== 1 && actions
[0].type
== ODPAT_CONTROLLER
) {
1931 /* As an optimization, avoid a round-trip from userspace to kernel to
1932 * userspace. This also avoids possibly filling up kernel packet
1933 * buffers along the way. */
1934 struct odp_msg
*msg
;
1936 msg
= ofpbuf_push_uninit(packet
, sizeof *msg
);
1937 msg
->type
= _ODPL_ACTION_NR
;
1938 msg
->length
= sizeof(struct odp_msg
) + packet
->size
;
1939 msg
->port
= in_port
;
1941 msg
->arg
= actions
[0].controller
.arg
;
1943 send_packet_in(ofproto
, packet
);
1949 error
= dpif_execute(ofproto
->dpif
, actions
, n_actions
, packet
);
1950 ofpbuf_delete(packet
);
1955 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1956 * 'flow' and is considered to have arrived on ODP port 'in_port'. 'packet'
1957 * must have at least sizeof(struct ofp_packet_in) bytes of headroom.
1959 * The flow that 'packet' actually contains does not need to actually match
1960 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1961 * the packet and byte counters for 'rule' will be credited for the packet sent
1962 * out whether or not the packet actually matches 'rule'.
1964 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1965 * the caller must already have accurately composed ODP actions for it given
1966 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1967 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1968 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1969 * actions and apply them to 'packet'.
1971 * Takes ownership of 'packet'. */
1973 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1974 struct ofpbuf
*packet
, const struct flow
*flow
)
1976 const union odp_action
*actions
;
1977 struct odp_flow_stats stats
;
1979 struct odp_actions a
;
1981 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
1983 /* Grab or compose the ODP actions.
1985 * The special case for an exact-match 'rule' where 'flow' is not the
1986 * rule's flow is important to avoid, e.g., sending a packet out its input
1987 * port simply because the ODP actions were composed for the wrong
1989 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1990 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1991 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1992 packet
, &a
, NULL
, 0, NULL
)) {
1993 ofpbuf_delete(packet
);
1996 actions
= a
.actions
;
1997 n_actions
= a
.n_actions
;
1999 actions
= rule
->odp_actions
;
2000 n_actions
= rule
->n_odp_actions
;
2003 /* Execute the ODP actions. */
2004 flow_extract_stats(flow
, packet
, &stats
);
2005 if (execute_odp_actions(ofproto
, flow
->in_port
,
2006 actions
, n_actions
, packet
)) {
2007 update_stats(ofproto
, rule
, &stats
);
2008 rule
->used
= time_msec();
2009 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
2013 /* Inserts 'rule' into 'p''s flow table.
2015 * If 'packet' is nonnull, takes ownership of 'packet', executes 'rule''s
2016 * actions on it and credits the statistics for sending the packet to 'rule'.
2017 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of
2020 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
2023 struct rule
*displaced_rule
;
2025 /* Insert the rule in the classifier. */
2026 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
2027 if (!rule
->cr
.wc
.wildcards
) {
2028 rule_make_actions(p
, rule
, packet
);
2031 /* Send the packet and credit it to the rule. */
2034 flow_extract(packet
, 0, in_port
, &flow
);
2035 rule_execute(p
, rule
, packet
, &flow
);
2038 /* Install the rule in the datapath only after sending the packet, to
2039 * avoid packet reordering. */
2040 if (rule
->cr
.wc
.wildcards
) {
2041 COVERAGE_INC(ofproto_add_wc_flow
);
2042 p
->need_revalidate
= true;
2044 rule_install(p
, rule
, displaced_rule
);
2047 /* Free the rule that was displaced, if any. */
2048 if (displaced_rule
) {
2049 rule_destroy(p
, displaced_rule
);
2053 static struct rule
*
2054 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
2055 const struct flow
*flow
)
2057 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
2058 rule
->idle_timeout
, rule
->hard_timeout
,
2060 COVERAGE_INC(ofproto_subrule_create
);
2061 cls_rule_from_flow(flow
, 0, (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
2062 : rule
->cr
.priority
), &subrule
->cr
);
2064 if (classifier_insert(&ofproto
->cls
, &subrule
->cr
)) {
2072 /* Remove 'rule' from 'ofproto' and free up the associated memory:
2074 * - If 'rule' was installed in the datapath, uninstalls it and updates
2075 * 'rule''s statistics (or its super-rule's statistics, if it is a
2076 * subrule), via rule_uninstall().
2078 * - Removes 'rule' from the classifier.
2080 * - If 'rule' is a super-rule that has subrules, revalidates (and possibly
2081 * uninstalls and destroys) its subrules, via rule_destroy().
2084 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2086 if (rule
->cr
.wc
.wildcards
) {
2087 COVERAGE_INC(ofproto_del_wc_flow
);
2088 ofproto
->need_revalidate
= true;
2090 rule_uninstall(ofproto
, rule
);
2092 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2093 rule_destroy(ofproto
, rule
);
2096 /* Returns true if the actions changed, false otherwise. */
2098 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
2099 const struct ofpbuf
*packet
)
2101 const struct rule
*super
;
2102 struct odp_actions a
;
2105 assert(!rule
->cr
.wc
.wildcards
);
2107 super
= rule
->super
? rule
->super
: rule
;
2109 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
2110 packet
, &a
, &rule
->tags
, &rule
->may_install
,
2111 &rule
->nf_flow
.output_iface
);
2113 actions_len
= a
.n_actions
* sizeof *a
.actions
;
2114 if (rule
->n_odp_actions
!= a
.n_actions
2115 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
2116 COVERAGE_INC(ofproto_odp_unchanged
);
2117 free(rule
->odp_actions
);
2118 rule
->n_odp_actions
= a
.n_actions
;
2119 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
2127 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
2128 struct odp_flow_put
*put
)
2130 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
2131 odp_flow_key_from_flow(&put
->flow
.key
, &rule
->cr
.flow
);
2132 put
->flow
.actions
= rule
->odp_actions
;
2133 put
->flow
.n_actions
= rule
->n_odp_actions
;
2134 put
->flow
.flags
= 0;
2136 return dpif_flow_put(ofproto
->dpif
, put
);
2140 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
2142 assert(!rule
->cr
.wc
.wildcards
);
2144 if (rule
->may_install
) {
2145 struct odp_flow_put put
;
2146 if (!do_put_flow(p
, rule
,
2147 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
2149 rule
->installed
= true;
2150 if (displaced_rule
) {
2151 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
2152 rule_post_uninstall(p
, displaced_rule
);
2155 } else if (displaced_rule
) {
2156 rule_uninstall(p
, displaced_rule
);
2161 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
2163 if (rule
->installed
) {
2164 struct odp_flow_put put
;
2165 COVERAGE_INC(ofproto_dp_missed
);
2166 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
2168 rule_install(ofproto
, rule
, NULL
);
2173 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
2175 bool actions_changed
;
2176 uint16_t new_out_iface
, old_out_iface
;
2178 old_out_iface
= rule
->nf_flow
.output_iface
;
2179 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
2181 if (rule
->may_install
) {
2182 if (rule
->installed
) {
2183 if (actions_changed
) {
2184 struct odp_flow_put put
;
2185 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
2186 | ODPPF_ZERO_STATS
, &put
);
2187 update_stats(ofproto
, rule
, &put
.flow
.stats
);
2189 /* Temporarily set the old output iface so that NetFlow
2190 * messages have the correct output interface for the old
2192 new_out_iface
= rule
->nf_flow
.output_iface
;
2193 rule
->nf_flow
.output_iface
= old_out_iface
;
2194 rule_post_uninstall(ofproto
, rule
);
2195 rule
->nf_flow
.output_iface
= new_out_iface
;
2198 rule_install(ofproto
, rule
, NULL
);
2201 rule_uninstall(ofproto
, rule
);
2206 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
2208 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
2210 if (ofproto
->ofhooks
->account_flow_cb
2211 && total_bytes
> rule
->accounted_bytes
)
2213 ofproto
->ofhooks
->account_flow_cb(
2214 &rule
->cr
.flow
, rule
->tags
, rule
->odp_actions
, rule
->n_odp_actions
,
2215 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
2216 rule
->accounted_bytes
= total_bytes
;
2220 /* 'rule' must be an exact-match rule in 'p'.
2222 * If 'rule' is installed in the datapath, uninstalls it and updates's
2223 * statistics. If 'rule' is a subrule, the statistics that are updated are
2224 * actually its super-rule's statistics; otherwise 'rule''s own statistics are
2227 * If 'rule' is not installed, this function has no effect. */
2229 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
2231 assert(!rule
->cr
.wc
.wildcards
);
2232 if (rule
->installed
) {
2233 struct odp_flow odp_flow
;
2235 odp_flow_key_from_flow(&odp_flow
.key
, &rule
->cr
.flow
);
2236 odp_flow
.actions
= NULL
;
2237 odp_flow
.n_actions
= 0;
2239 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2240 update_stats(p
, rule
, &odp_flow
.stats
);
2242 rule
->installed
= false;
2244 rule_post_uninstall(p
, rule
);
2249 is_controller_rule(struct rule
*rule
)
2251 /* If the only action is send to the controller then don't report
2252 * NetFlow expiration messages since it is just part of the control
2253 * logic for the network and not real traffic. */
2257 && rule
->super
->n_actions
== 1
2258 && action_outputs_to_port(&rule
->super
->actions
[0],
2259 htons(OFPP_CONTROLLER
)));
2263 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
2265 struct rule
*super
= rule
->super
;
2267 rule_account(ofproto
, rule
, 0);
2269 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
2270 struct ofexpired expired
;
2271 expired
.flow
= rule
->cr
.flow
;
2272 expired
.packet_count
= rule
->packet_count
;
2273 expired
.byte_count
= rule
->byte_count
;
2274 expired
.used
= rule
->used
;
2275 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
2278 super
->packet_count
+= rule
->packet_count
;
2279 super
->byte_count
+= rule
->byte_count
;
2281 /* Reset counters to prevent double counting if the rule ever gets
2283 rule
->packet_count
= 0;
2284 rule
->byte_count
= 0;
2285 rule
->accounted_bytes
= 0;
2287 netflow_flow_clear(&rule
->nf_flow
);
2292 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2293 struct rconn_packet_counter
*counter
)
2295 update_openflow_length(msg
);
2296 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2302 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2305 struct ofpbuf
*buf
= make_ofp_error_msg(error
, oh
);
2307 COVERAGE_INC(ofproto_error
);
2308 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2313 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2315 opp
->port_no
= htons(opp
->port_no
);
2316 opp
->config
= htonl(opp
->config
);
2317 opp
->state
= htonl(opp
->state
);
2318 opp
->curr
= htonl(opp
->curr
);
2319 opp
->advertised
= htonl(opp
->advertised
);
2320 opp
->supported
= htonl(opp
->supported
);
2321 opp
->peer
= htonl(opp
->peer
);
2325 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2327 struct ofp_header
*rq
= oh
;
2328 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
2333 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2334 struct ofp_header
*oh
)
2336 struct ofp_switch_features
*osf
;
2338 struct ofport
*port
;
2340 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2341 osf
->datapath_id
= htonll(p
->datapath_id
);
2342 osf
->n_buffers
= htonl(pktbuf_capacity());
2344 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2345 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2346 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2347 (1u << OFPAT_SET_VLAN_VID
) |
2348 (1u << OFPAT_SET_VLAN_PCP
) |
2349 (1u << OFPAT_STRIP_VLAN
) |
2350 (1u << OFPAT_SET_DL_SRC
) |
2351 (1u << OFPAT_SET_DL_DST
) |
2352 (1u << OFPAT_SET_NW_SRC
) |
2353 (1u << OFPAT_SET_NW_DST
) |
2354 (1u << OFPAT_SET_NW_TOS
) |
2355 (1u << OFPAT_SET_TP_SRC
) |
2356 (1u << OFPAT_SET_TP_DST
) |
2357 (1u << OFPAT_ENQUEUE
));
2359 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
2360 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2363 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2368 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2369 struct ofp_header
*oh
)
2372 struct ofp_switch_config
*osc
;
2376 /* Figure out flags. */
2377 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
2378 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2381 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2382 osc
->flags
= htons(flags
);
2383 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2384 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2390 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
2391 struct ofp_switch_config
*osc
)
2396 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
2400 flags
= ntohs(osc
->flags
);
2402 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2403 switch (flags
& OFPC_FRAG_MASK
) {
2404 case OFPC_FRAG_NORMAL
:
2405 dpif_set_drop_frags(p
->dpif
, false);
2407 case OFPC_FRAG_DROP
:
2408 dpif_set_drop_frags(p
->dpif
, true);
2411 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2417 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2423 add_controller_action(struct odp_actions
*actions
, uint16_t max_len
)
2425 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
2426 a
->controller
.arg
= max_len
;
2429 struct action_xlate_ctx
{
2431 struct flow flow
; /* Flow to which these actions correspond. */
2432 int recurse
; /* Recursion level, via xlate_table_action. */
2433 struct ofproto
*ofproto
;
2434 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2435 * null pointer if we are revalidating
2436 * without a packet to refer to. */
2439 struct odp_actions
*out
; /* Datapath actions. */
2440 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2441 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2442 * be reassessed for every packet. */
2443 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2446 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2447 * flow translation. */
2448 #define MAX_RESUBMIT_RECURSION 8
2450 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2451 struct action_xlate_ctx
*ctx
);
2454 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2456 const struct ofport
*ofport
= get_port(ctx
->ofproto
, port
);
2459 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2460 /* Forwarding disabled on port. */
2465 * We don't have an ofport record for this port, but it doesn't hurt to
2466 * allow forwarding to it anyhow. Maybe such a port will appear later
2467 * and we're pre-populating the flow table.
2471 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2472 ctx
->nf_output_iface
= port
;
2475 static struct rule
*
2476 lookup_valid_rule(struct ofproto
*ofproto
, const struct flow
*flow
)
2479 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
,
2482 /* The rule we found might not be valid, since we could be in need of
2483 * revalidation. If it is not valid, don't return it. */
2486 && ofproto
->need_revalidate
2487 && !revalidate_rule(ofproto
, rule
)) {
2488 COVERAGE_INC(ofproto_invalidated
);
2496 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2498 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2499 uint16_t old_in_port
;
2502 /* Look up a flow with 'in_port' as the input port. Then restore the
2503 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2504 * have surprising behavior). */
2505 old_in_port
= ctx
->flow
.in_port
;
2506 ctx
->flow
.in_port
= in_port
;
2507 rule
= lookup_valid_rule(ctx
->ofproto
, &ctx
->flow
);
2508 ctx
->flow
.in_port
= old_in_port
;
2516 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2520 struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2522 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2523 MAX_RESUBMIT_RECURSION
);
2528 flood_packets(struct ofproto
*ofproto
, uint16_t odp_in_port
, uint32_t mask
,
2529 uint16_t *nf_output_iface
, struct odp_actions
*actions
)
2531 struct ofport
*ofport
;
2533 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
2534 uint16_t odp_port
= ofport
->odp_port
;
2535 if (odp_port
!= odp_in_port
&& !(ofport
->opp
.config
& mask
)) {
2536 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= odp_port
;
2539 *nf_output_iface
= NF_OUT_FLOOD
;
2543 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2544 uint16_t port
, uint16_t max_len
)
2547 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2549 ctx
->nf_output_iface
= NF_OUT_DROP
;
2553 add_output_action(ctx
, ctx
->flow
.in_port
);
2556 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2559 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2560 ctx
->out
, ctx
->tags
,
2561 &ctx
->nf_output_iface
,
2562 ctx
->ofproto
->aux
)) {
2563 COVERAGE_INC(ofproto_uninstallable
);
2564 ctx
->may_set_up_flow
= false;
2568 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, OFPPC_NO_FLOOD
,
2569 &ctx
->nf_output_iface
, ctx
->out
);
2572 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, 0,
2573 &ctx
->nf_output_iface
, ctx
->out
);
2575 case OFPP_CONTROLLER
:
2576 add_controller_action(ctx
->out
, max_len
);
2579 add_output_action(ctx
, ODPP_LOCAL
);
2582 odp_port
= ofp_port_to_odp_port(port
);
2583 if (odp_port
!= ctx
->flow
.in_port
) {
2584 add_output_action(ctx
, odp_port
);
2589 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2590 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2591 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2592 ctx
->nf_output_iface
= prev_nf_output_iface
;
2593 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2594 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2595 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2600 xlate_output_action(struct action_xlate_ctx
*ctx
,
2601 const struct ofp_action_output
*oao
)
2603 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2606 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2607 * optimization, because we're going to add another action that sets the
2608 * priority immediately after, or because there are no actions following the
2611 remove_pop_action(struct action_xlate_ctx
*ctx
)
2613 size_t n
= ctx
->out
->n_actions
;
2614 if (n
> 0 && ctx
->out
->actions
[n
- 1].type
== ODPAT_POP_PRIORITY
) {
2615 ctx
->out
->n_actions
--;
2620 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2621 const struct ofp_action_enqueue
*oae
)
2623 uint16_t ofp_port
, odp_port
;
2627 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2630 /* Fall back to ordinary output action. */
2631 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2635 /* Figure out ODP output port. */
2636 ofp_port
= ntohs(oae
->port
);
2637 if (ofp_port
!= OFPP_IN_PORT
) {
2638 odp_port
= ofp_port_to_odp_port(ofp_port
);
2640 odp_port
= ctx
->flow
.in_port
;
2643 /* Add ODP actions. */
2644 remove_pop_action(ctx
);
2645 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2647 add_output_action(ctx
, odp_port
);
2648 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2650 /* Update NetFlow output port. */
2651 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2652 ctx
->nf_output_iface
= odp_port
;
2653 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2654 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2659 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
2660 const struct nx_action_set_queue
*nasq
)
2665 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
2668 /* Couldn't translate queue to a priority, so ignore. A warning
2669 * has already been logged. */
2673 remove_pop_action(ctx
);
2674 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2679 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2680 const struct nx_action_header
*nah
)
2682 const struct nx_action_resubmit
*nar
;
2683 const struct nx_action_set_tunnel
*nast
;
2684 const struct nx_action_set_queue
*nasq
;
2685 union odp_action
*oa
;
2686 int subtype
= ntohs(nah
->subtype
);
2688 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2690 case NXAST_RESUBMIT
:
2691 nar
= (const struct nx_action_resubmit
*) nah
;
2692 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2695 case NXAST_SET_TUNNEL
:
2696 nast
= (const struct nx_action_set_tunnel
*) nah
;
2697 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2698 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2701 case NXAST_DROP_SPOOFED_ARP
:
2702 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_ARP
)) {
2703 odp_actions_add(ctx
->out
, ODPAT_DROP_SPOOFED_ARP
);
2707 case NXAST_SET_QUEUE
:
2708 nasq
= (const struct nx_action_set_queue
*) nah
;
2709 xlate_set_queue_action(ctx
, nasq
);
2712 case NXAST_POP_QUEUE
:
2713 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2716 /* If you add a new action here that modifies flow data, don't forget to
2717 * update the flow key in ctx->flow at the same time. */
2720 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2726 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2727 struct action_xlate_ctx
*ctx
)
2729 struct actions_iterator iter
;
2730 const union ofp_action
*ia
;
2731 const struct ofport
*port
;
2733 port
= get_port(ctx
->ofproto
, ctx
->flow
.in_port
);
2734 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2735 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
2736 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2737 /* Drop this flow. */
2741 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2742 uint16_t type
= ntohs(ia
->type
);
2743 union odp_action
*oa
;
2747 xlate_output_action(ctx
, &ia
->output
);
2750 case OFPAT_SET_VLAN_VID
:
2751 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_TCI
);
2752 oa
->dl_tci
.tci
= ia
->vlan_vid
.vlan_vid
;
2753 oa
->dl_tci
.tci
|= htons(ctx
->flow
.dl_vlan_pcp
<< VLAN_PCP_SHIFT
);
2754 ctx
->flow
.dl_vlan
= ia
->vlan_vid
.vlan_vid
;
2757 case OFPAT_SET_VLAN_PCP
:
2758 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_TCI
);
2759 oa
->dl_tci
.tci
= htons(ia
->vlan_pcp
.vlan_pcp
<< VLAN_PCP_SHIFT
);
2760 oa
->dl_tci
.tci
|= ctx
->flow
.dl_vlan
;
2761 ctx
->flow
.dl_vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2764 case OFPAT_STRIP_VLAN
:
2765 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2766 ctx
->flow
.dl_vlan
= htons(OFP_VLAN_NONE
);
2767 ctx
->flow
.dl_vlan_pcp
= 0;
2770 case OFPAT_SET_DL_SRC
:
2771 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2772 memcpy(oa
->dl_addr
.dl_addr
,
2773 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2774 memcpy(ctx
->flow
.dl_src
,
2775 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2778 case OFPAT_SET_DL_DST
:
2779 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2780 memcpy(oa
->dl_addr
.dl_addr
,
2781 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2782 memcpy(ctx
->flow
.dl_dst
,
2783 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2786 case OFPAT_SET_NW_SRC
:
2787 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2788 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2791 case OFPAT_SET_NW_DST
:
2792 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2793 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2796 case OFPAT_SET_NW_TOS
:
2797 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2798 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2801 case OFPAT_SET_TP_SRC
:
2802 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2803 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2806 case OFPAT_SET_TP_DST
:
2807 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2808 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2812 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2816 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
2820 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2827 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2828 const struct flow
*flow
, struct ofproto
*ofproto
,
2829 const struct ofpbuf
*packet
,
2830 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2831 uint16_t *nf_output_iface
)
2833 tag_type no_tags
= 0;
2834 struct action_xlate_ctx ctx
;
2835 COVERAGE_INC(ofproto_ofp2odp
);
2836 odp_actions_init(out
);
2839 ctx
.ofproto
= ofproto
;
2840 ctx
.packet
= packet
;
2842 ctx
.tags
= tags
? tags
: &no_tags
;
2843 ctx
.may_set_up_flow
= true;
2844 ctx
.nf_output_iface
= NF_OUT_DROP
;
2845 do_xlate_actions(in
, n_in
, &ctx
);
2846 remove_pop_action(&ctx
);
2848 /* Check with in-band control to see if we're allowed to set up this
2850 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2851 ctx
.may_set_up_flow
= false;
2854 if (may_set_up_flow
) {
2855 *may_set_up_flow
= ctx
.may_set_up_flow
;
2857 if (nf_output_iface
) {
2858 *nf_output_iface
= ctx
.nf_output_iface
;
2860 if (odp_actions_overflow(out
)) {
2861 COVERAGE_INC(odp_overflow
);
2862 odp_actions_init(out
);
2863 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2868 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2869 * error message code (composed with ofp_mkerr()) for the caller to propagate
2870 * upward. Otherwise, returns 0.
2872 * 'oh' is used to make log messages more informative. */
2874 reject_slave_controller(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2876 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
2877 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2880 type_name
= ofp_message_type_to_string(oh
->type
);
2881 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
2885 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
2892 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2893 struct ofp_header
*oh
)
2895 struct ofp_packet_out
*opo
;
2896 struct ofpbuf payload
, *buffer
;
2897 struct odp_actions actions
;
2903 error
= reject_slave_controller(ofconn
, oh
);
2908 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2912 opo
= (struct ofp_packet_out
*) oh
;
2914 COVERAGE_INC(ofproto_packet_out
);
2915 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2916 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2918 if (error
|| !buffer
) {
2926 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2927 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2928 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2930 dpif_execute(p
->dpif
, actions
.actions
, actions
.n_actions
, &payload
);
2932 ofpbuf_delete(buffer
);
2938 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2939 uint32_t config
, uint32_t mask
)
2941 mask
&= config
^ port
->opp
.config
;
2942 if (mask
& OFPPC_PORT_DOWN
) {
2943 if (config
& OFPPC_PORT_DOWN
) {
2944 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2946 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2949 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
2950 OFPPC_NO_FWD | OFPPC_NO_FLOOD)
2951 if (mask
& REVALIDATE_BITS
) {
2952 COVERAGE_INC(ofproto_costly_flags
);
2953 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2954 p
->need_revalidate
= true;
2956 #undef REVALIDATE_BITS
2957 if (mask
& OFPPC_NO_PACKET_IN
) {
2958 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2963 handle_port_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2964 struct ofp_header
*oh
)
2966 const struct ofp_port_mod
*opm
;
2967 struct ofport
*port
;
2970 error
= reject_slave_controller(ofconn
, oh
);
2974 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2978 opm
= (struct ofp_port_mod
*) oh
;
2980 port
= get_port(p
, ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2982 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2983 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2984 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2986 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2987 if (opm
->advertise
) {
2988 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2994 static struct ofpbuf
*
2995 make_stats_reply(ovs_be32 xid
, ovs_be16 type
, size_t body_len
)
2997 struct ofp_stats_reply
*osr
;
3000 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
3001 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
3003 osr
->flags
= htons(0);
3007 static struct ofpbuf
*
3008 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
3010 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
3014 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
3016 struct ofpbuf
*msg
= *msgp
;
3017 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
3018 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3019 struct ofp_stats_reply
*reply
= msg
->data
;
3020 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3021 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
3022 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3024 return ofpbuf_put_uninit(*msgp
, nbytes
);
3028 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3029 struct ofp_stats_request
*request
)
3031 struct ofp_desc_stats
*ods
;
3034 msg
= start_stats_reply(request
, sizeof *ods
);
3035 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
3036 memset(ods
, 0, sizeof *ods
);
3037 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
3038 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
3039 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
3040 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
3041 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
3042 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3048 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3049 struct ofp_stats_request
*request
)
3051 struct ofp_table_stats
*ots
;
3056 msg
= start_stats_reply(request
, sizeof *ots
* 2);
3058 /* Count rules other than subrules. */
3059 n_rules
= classifier_count(&p
->cls
);
3060 CLASSIFIER_FOR_EACH_EXACT_RULE (rule
, cr
, &p
->cls
) {
3066 /* Classifier table. */
3067 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
3068 memset(ots
, 0, sizeof *ots
);
3069 strcpy(ots
->name
, "classifier");
3070 ots
->wildcards
= (p
->flow_format
== NXFF_OPENFLOW10
3071 ? htonl(OFPFW_ALL
) : htonl(OVSFW_ALL
));
3072 ots
->max_entries
= htonl(1024 * 1024); /* An arbitrary big number. */
3073 ots
->active_count
= htonl(n_rules
);
3074 ots
->lookup_count
= htonll(0); /* XXX */
3075 ots
->matched_count
= htonll(0); /* XXX */
3077 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3082 append_port_stat(struct ofport
*port
, struct ofconn
*ofconn
,
3083 struct ofpbuf
**msgp
)
3085 struct netdev_stats stats
;
3086 struct ofp_port_stats
*ops
;
3088 /* Intentionally ignore return value, since errors will set
3089 * 'stats' to all-1s, which is correct for OpenFlow, and
3090 * netdev_get_stats() will log errors. */
3091 netdev_get_stats(port
->netdev
, &stats
);
3093 ops
= append_stats_reply(sizeof *ops
, ofconn
, msgp
);
3094 ops
->port_no
= htons(port
->opp
.port_no
);
3095 memset(ops
->pad
, 0, sizeof ops
->pad
);
3096 ops
->rx_packets
= htonll(stats
.rx_packets
);
3097 ops
->tx_packets
= htonll(stats
.tx_packets
);
3098 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3099 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3100 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3101 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3102 ops
->rx_errors
= htonll(stats
.rx_errors
);
3103 ops
->tx_errors
= htonll(stats
.tx_errors
);
3104 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3105 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3106 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3107 ops
->collisions
= htonll(stats
.collisions
);
3111 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3112 struct ofp_stats_request
*osr
,
3115 struct ofp_port_stats_request
*psr
;
3116 struct ofp_port_stats
*ops
;
3118 struct ofport
*port
;
3120 if (arg_size
!= sizeof *psr
) {
3121 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3123 psr
= (struct ofp_port_stats_request
*) osr
->body
;
3125 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
3126 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3127 port
= get_port(p
, ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3129 append_port_stat(port
, ofconn
, &msg
);
3132 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3133 append_port_stat(port
, ofconn
, &msg
);
3137 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3141 struct flow_stats_cbdata
{
3142 struct ofproto
*ofproto
;
3143 struct ofconn
*ofconn
;
3148 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3149 * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the
3150 * returned statistic include statistics for all of 'rule''s subrules. */
3152 query_stats(struct ofproto
*p
, struct rule
*rule
,
3153 uint64_t *packet_countp
, uint64_t *byte_countp
)
3155 uint64_t packet_count
, byte_count
;
3156 struct rule
*subrule
;
3157 struct odp_flow
*odp_flows
;
3160 /* Start from historical data for 'rule' itself that are no longer tracked
3161 * by the datapath. This counts, for example, subrules that have
3163 packet_count
= rule
->packet_count
;
3164 byte_count
= rule
->byte_count
;
3166 /* Prepare to ask the datapath for statistics on 'rule', or if it is
3167 * wildcarded then on all of its subrules.
3169 * Also, add any statistics that are not tracked by the datapath for each
3170 * subrule. This includes, for example, statistics for packets that were
3171 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3173 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
3174 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
3175 if (rule
->cr
.wc
.wildcards
) {
3177 LIST_FOR_EACH (subrule
, list
, &rule
->list
) {
3178 odp_flow_key_from_flow(&odp_flows
[i
++].key
, &subrule
->cr
.flow
);
3179 packet_count
+= subrule
->packet_count
;
3180 byte_count
+= subrule
->byte_count
;
3183 odp_flow_key_from_flow(&odp_flows
[0].key
, &rule
->cr
.flow
);
3186 /* Fetch up-to-date statistics from the datapath and add them in. */
3187 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
3189 for (i
= 0; i
< n_odp_flows
; i
++) {
3190 struct odp_flow
*odp_flow
= &odp_flows
[i
];
3191 packet_count
+= odp_flow
->stats
.n_packets
;
3192 byte_count
+= odp_flow
->stats
.n_bytes
;
3197 /* Return the stats to the caller. */
3198 *packet_countp
= packet_count
;
3199 *byte_countp
= byte_count
;
3203 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3205 struct rule
*rule
= rule_from_cls_rule(rule_
);
3206 struct flow_stats_cbdata
*cbdata
= cbdata_
;
3207 struct ofp_flow_stats
*ofs
;
3208 uint64_t packet_count
, byte_count
;
3209 size_t act_len
, len
;
3210 long long int tdiff
= time_msec() - rule
->created
;
3211 uint32_t sec
= tdiff
/ 1000;
3212 uint32_t msec
= tdiff
- (sec
* 1000);
3214 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3218 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3219 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3221 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3223 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
3224 ofs
->length
= htons(len
);
3227 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3228 cbdata
->ofproto
->flow_format
, &ofs
->match
);
3229 ofs
->duration_sec
= htonl(sec
);
3230 ofs
->duration_nsec
= htonl(msec
* 1000000);
3231 ofs
->cookie
= rule
->flow_cookie
;
3232 ofs
->priority
= htons(rule
->cr
.priority
);
3233 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3234 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3235 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3236 ofs
->packet_count
= htonll(packet_count
);
3237 ofs
->byte_count
= htonll(byte_count
);
3238 if (rule
->n_actions
> 0) {
3239 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3244 table_id_to_include(uint8_t table_id
)
3246 return table_id
== 0 || table_id
== 0xff ? CLS_INC_ALL
: 0;
3250 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3251 const struct ofp_stats_request
*osr
,
3254 struct ofp_flow_stats_request
*fsr
;
3255 struct flow_stats_cbdata cbdata
;
3256 struct cls_rule target
;
3258 if (arg_size
!= sizeof *fsr
) {
3259 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3261 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
3263 COVERAGE_INC(ofproto_flows_req
);
3265 cbdata
.ofconn
= ofconn
;
3266 cbdata
.out_port
= fsr
->out_port
;
3267 cbdata
.msg
= start_stats_reply(osr
, 1024);
3268 cls_rule_from_match(&fsr
->match
, 0, NXFF_OPENFLOW10
, 0, &target
);
3269 classifier_for_each_match(&p
->cls
, &target
,
3270 table_id_to_include(fsr
->table_id
),
3271 flow_stats_cb
, &cbdata
);
3272 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3276 struct flow_stats_ds_cbdata
{
3277 struct ofproto
*ofproto
;
3282 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
3284 struct rule
*rule
= rule_from_cls_rule(rule_
);
3285 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
3286 struct ds
*results
= cbdata
->results
;
3287 struct ofp_match match
;
3288 uint64_t packet_count
, byte_count
;
3289 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3291 /* Don't report on subrules. */
3292 if (rule
->super
!= NULL
) {
3296 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3297 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3298 cbdata
->ofproto
->flow_format
, &match
);
3300 ds_put_format(results
, "duration=%llds, ",
3301 (time_msec() - rule
->created
) / 1000);
3302 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3303 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3304 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3305 ofp_print_match(results
, &match
, true);
3307 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3309 ds_put_cstr(results
, "drop");
3311 ds_put_cstr(results
, "\n");
3314 /* Adds a pretty-printed description of all flows to 'results', including
3315 * those marked hidden by secchan (e.g., by in-band control). */
3317 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3319 struct ofp_match match
;
3320 struct cls_rule target
;
3321 struct flow_stats_ds_cbdata cbdata
;
3323 memset(&match
, 0, sizeof match
);
3324 match
.wildcards
= htonl(OVSFW_ALL
);
3327 cbdata
.results
= results
;
3329 cls_rule_from_match(&match
, 0, NXFF_OPENFLOW10
, 0, &target
);
3330 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3331 flow_stats_ds_cb
, &cbdata
);
3334 struct aggregate_stats_cbdata
{
3335 struct ofproto
*ofproto
;
3337 uint64_t packet_count
;
3338 uint64_t byte_count
;
3343 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3345 struct rule
*rule
= rule_from_cls_rule(rule_
);
3346 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
3347 uint64_t packet_count
, byte_count
;
3349 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3353 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3355 cbdata
->packet_count
+= packet_count
;
3356 cbdata
->byte_count
+= byte_count
;
3361 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3362 const struct ofp_stats_request
*osr
,
3365 struct ofp_aggregate_stats_request
*asr
;
3366 struct ofp_aggregate_stats_reply
*reply
;
3367 struct aggregate_stats_cbdata cbdata
;
3368 struct cls_rule target
;
3371 if (arg_size
!= sizeof *asr
) {
3372 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3374 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
3376 COVERAGE_INC(ofproto_agg_request
);
3378 cbdata
.out_port
= asr
->out_port
;
3379 cbdata
.packet_count
= 0;
3380 cbdata
.byte_count
= 0;
3382 cls_rule_from_match(&asr
->match
, 0, NXFF_OPENFLOW10
, 0, &target
);
3383 classifier_for_each_match(&p
->cls
, &target
,
3384 table_id_to_include(asr
->table_id
),
3385 aggregate_stats_cb
, &cbdata
);
3387 msg
= start_stats_reply(osr
, sizeof *reply
);
3388 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
3389 reply
->flow_count
= htonl(cbdata
.n_flows
);
3390 reply
->packet_count
= htonll(cbdata
.packet_count
);
3391 reply
->byte_count
= htonll(cbdata
.byte_count
);
3392 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3396 struct queue_stats_cbdata
{
3397 struct ofconn
*ofconn
;
3398 struct ofport
*ofport
;
3403 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3404 const struct netdev_queue_stats
*stats
)
3406 struct ofp_queue_stats
*reply
;
3408 reply
= append_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3409 reply
->port_no
= htons(cbdata
->ofport
->opp
.port_no
);
3410 memset(reply
->pad
, 0, sizeof reply
->pad
);
3411 reply
->queue_id
= htonl(queue_id
);
3412 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3413 reply
->tx_packets
= htonll(stats
->tx_packets
);
3414 reply
->tx_errors
= htonll(stats
->tx_errors
);
3418 handle_queue_stats_dump_cb(uint32_t queue_id
,
3419 struct netdev_queue_stats
*stats
,
3422 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3424 put_queue_stats(cbdata
, queue_id
, stats
);
3428 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3429 struct queue_stats_cbdata
*cbdata
)
3431 cbdata
->ofport
= port
;
3432 if (queue_id
== OFPQ_ALL
) {
3433 netdev_dump_queue_stats(port
->netdev
,
3434 handle_queue_stats_dump_cb
, cbdata
);
3436 struct netdev_queue_stats stats
;
3438 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3439 put_queue_stats(cbdata
, queue_id
, &stats
);
3445 handle_queue_stats_request(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3446 const struct ofp_stats_request
*osr
,
3449 struct ofp_queue_stats_request
*qsr
;
3450 struct queue_stats_cbdata cbdata
;
3451 struct ofport
*port
;
3452 unsigned int port_no
;
3455 if (arg_size
!= sizeof *qsr
) {
3456 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3458 qsr
= (struct ofp_queue_stats_request
*) osr
->body
;
3460 COVERAGE_INC(ofproto_queue_req
);
3462 cbdata
.ofconn
= ofconn
;
3463 cbdata
.msg
= start_stats_reply(osr
, 128);
3465 port_no
= ntohs(qsr
->port_no
);
3466 queue_id
= ntohl(qsr
->queue_id
);
3467 if (port_no
== OFPP_ALL
) {
3468 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3469 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3471 } else if (port_no
< ofproto
->max_ports
) {
3472 port
= get_port(ofproto
, ofp_port_to_odp_port(port_no
));
3474 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3477 ofpbuf_delete(cbdata
.msg
);
3478 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3480 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3486 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3487 struct ofp_header
*oh
)
3489 struct ofp_stats_request
*osr
;
3493 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
3498 osr
= (struct ofp_stats_request
*) oh
;
3500 switch (ntohs(osr
->type
)) {
3502 return handle_desc_stats_request(p
, ofconn
, osr
);
3505 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
3507 case OFPST_AGGREGATE
:
3508 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
3511 return handle_table_stats_request(p
, ofconn
, osr
);
3514 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
3517 return handle_queue_stats_request(p
, ofconn
, osr
, arg_size
);
3520 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3523 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
3527 static long long int
3528 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3530 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3534 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
3535 const struct odp_flow_stats
*stats
)
3537 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3538 if (used
> rule
->used
) {
3540 if (rule
->super
&& used
> rule
->super
->used
) {
3541 rule
->super
->used
= used
;
3543 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
3548 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
3549 const struct odp_flow_stats
*stats
)
3551 if (stats
->n_packets
) {
3552 update_time(ofproto
, rule
, stats
);
3553 rule
->packet_count
+= stats
->n_packets
;
3554 rule
->byte_count
+= stats
->n_bytes
;
3555 netflow_flow_update_flags(&rule
->nf_flow
, stats
->tcp_flags
);
3559 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3560 * in which no matching flow already exists in the flow table.
3562 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3563 * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
3564 * code as encoded by ofp_mkerr() on failure.
3566 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3569 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
3570 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3572 struct ofpbuf
*packet
;
3577 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
3580 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3581 p
->flow_format
, ofm
->cookie
, &cr
);
3582 if (classifier_rule_overlaps(&p
->cls
, &cr
)) {
3583 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3587 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
3588 n_actions
, ntohs(ofm
->idle_timeout
),
3589 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
3590 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
3591 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3592 p
->flow_format
, ofm
->cookie
, &rule
->cr
);
3595 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
3596 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3600 in_port
= UINT16_MAX
;
3603 rule_insert(p
, rule
, packet
, in_port
);
3607 static struct rule
*
3608 find_flow_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3610 struct cls_rule target
;
3612 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3613 p
->flow_format
, ofm
->cookie
, &target
);
3614 return rule_from_cls_rule(classifier_find_rule_exactly(&p
->cls
, &target
));
3618 send_buffered_packet(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3619 struct rule
*rule
, const struct ofp_flow_mod
*ofm
)
3621 struct ofpbuf
*packet
;
3626 if (ofm
->buffer_id
== htonl(UINT32_MAX
)) {
3630 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3636 flow_extract(packet
, 0, in_port
, &flow
);
3637 rule_execute(ofproto
, rule
, packet
, &flow
);
3642 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3644 struct modify_flows_cbdata
{
3645 struct ofproto
*ofproto
;
3646 const struct ofp_flow_mod
*ofm
;
3651 static int modify_flow(struct ofproto
*, const struct ofp_flow_mod
*,
3652 size_t n_actions
, struct rule
*);
3653 static void modify_flows_cb(struct cls_rule
*, void *cbdata_
);
3655 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3656 * encoded by ofp_mkerr() on failure.
3658 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3661 modify_flows_loose(struct ofproto
*p
, struct ofconn
*ofconn
,
3662 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3664 struct modify_flows_cbdata cbdata
;
3665 struct cls_rule target
;
3669 cbdata
.n_actions
= n_actions
;
3670 cbdata
.match
= NULL
;
3672 cls_rule_from_match(&ofm
->match
, 0, p
->flow_format
, ofm
->cookie
, &target
);
3674 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3675 modify_flows_cb
, &cbdata
);
3677 /* This credits the packet to whichever flow happened to happened to
3678 * match last. That's weird. Maybe we should do a lookup for the
3679 * flow that actually matches the packet? Who knows. */
3680 send_buffered_packet(p
, ofconn
, cbdata
.match
, ofm
);
3683 return add_flow(p
, ofconn
, ofm
, n_actions
);
3687 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3688 * code as encoded by ofp_mkerr() on failure.
3690 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3693 modify_flow_strict(struct ofproto
*p
, struct ofconn
*ofconn
,
3694 struct ofp_flow_mod
*ofm
, size_t n_actions
)
3696 struct rule
*rule
= find_flow_strict(p
, ofm
);
3697 if (rule
&& !rule_is_hidden(rule
)) {
3698 modify_flow(p
, ofm
, n_actions
, rule
);
3699 return send_buffered_packet(p
, ofconn
, rule
, ofm
);
3701 return add_flow(p
, ofconn
, ofm
, n_actions
);
3705 /* Callback for modify_flows_loose(). */
3707 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3709 struct rule
*rule
= rule_from_cls_rule(rule_
);
3710 struct modify_flows_cbdata
*cbdata
= cbdata_
;
3712 if (!rule_is_hidden(rule
)) {
3713 cbdata
->match
= rule
;
3714 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
, rule
);
3718 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3719 * been identified as a flow in 'p''s flow table to be modified, by changing
3720 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3721 * ofp_action[] structures). */
3723 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
3724 size_t n_actions
, struct rule
*rule
)
3726 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
3728 rule
->flow_cookie
= ofm
->cookie
;
3730 /* If the actions are the same, do nothing. */
3731 if (n_actions
== rule
->n_actions
3732 && (!n_actions
|| !memcmp(ofm
->actions
, rule
->actions
, actions_len
)))
3737 /* Replace actions. */
3738 free(rule
->actions
);
3739 rule
->actions
= n_actions
? xmemdup(ofm
->actions
, actions_len
) : NULL
;
3740 rule
->n_actions
= n_actions
;
3742 /* Make sure that the datapath gets updated properly. */
3743 if (rule
->cr
.wc
.wildcards
) {
3744 COVERAGE_INC(ofproto_mod_wc_flow
);
3745 p
->need_revalidate
= true;
3747 rule_update_actions(p
, rule
);
3753 /* OFPFC_DELETE implementation. */
3755 struct delete_flows_cbdata
{
3756 struct ofproto
*ofproto
;
3760 static void delete_flows_cb(struct cls_rule
*, void *cbdata_
);
3761 static void delete_flow(struct ofproto
*, struct rule
*, ovs_be16 out_port
);
3763 /* Implements OFPFC_DELETE. */
3765 delete_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3767 struct delete_flows_cbdata cbdata
;
3768 struct cls_rule target
;
3771 cbdata
.out_port
= ofm
->out_port
;
3773 cls_rule_from_match(&ofm
->match
, 0, p
->flow_format
, ofm
->cookie
, &target
);
3775 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3776 delete_flows_cb
, &cbdata
);
3779 /* Implements OFPFC_DELETE_STRICT. */
3781 delete_flow_strict(struct ofproto
*p
, struct ofp_flow_mod
*ofm
)
3783 struct rule
*rule
= find_flow_strict(p
, ofm
);
3785 delete_flow(p
, rule
, ofm
->out_port
);
3789 /* Callback for delete_flows_loose(). */
3791 delete_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3793 struct rule
*rule
= rule_from_cls_rule(rule_
);
3794 struct delete_flows_cbdata
*cbdata
= cbdata_
;
3796 delete_flow(cbdata
->ofproto
, rule
, cbdata
->out_port
);
3799 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
3800 * been identified as a flow to delete from 'p''s flow table, by deleting the
3801 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
3804 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
3805 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
3806 * specified 'out_port'. */
3808 delete_flow(struct ofproto
*p
, struct rule
*rule
, ovs_be16 out_port
)
3810 if (rule_is_hidden(rule
)) {
3814 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
3818 send_flow_removed(p
, rule
, time_msec(), OFPRR_DELETE
);
3819 rule_remove(p
, rule
);
3823 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3824 struct ofp_flow_mod
*ofm
)
3826 struct ofp_match orig_match
;
3830 error
= reject_slave_controller(ofconn
, &ofm
->header
);
3834 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3835 sizeof *ofm
->actions
, &n_actions
);
3840 /* We do not support the emergency flow cache. It will hopefully
3841 * get dropped from OpenFlow in the near future. */
3842 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3843 /* There isn't a good fit for an error code, so just state that the
3844 * flow table is full. */
3845 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3848 /* Normalize ofp->match. If normalization actually changes anything, then
3849 * log the differences. */
3850 ofm
->match
.pad1
[0] = ofm
->match
.pad2
[0] = 0;
3851 orig_match
= ofm
->match
;
3852 normalize_match(&ofm
->match
);
3853 if (memcmp(&ofm
->match
, &orig_match
, sizeof orig_match
)) {
3854 static struct vlog_rate_limit normal_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3855 if (!VLOG_DROP_INFO(&normal_rl
)) {
3856 char *old
= ofp_match_to_literal_string(&orig_match
);
3857 char *new = ofp_match_to_literal_string(&ofm
->match
);
3858 VLOG_INFO("%s: normalization changed ofp_match, details:",
3859 rconn_get_name(ofconn
->rconn
));
3860 VLOG_INFO(" pre: %s", old
);
3861 VLOG_INFO("post: %s", new);
3867 if (!ofm
->match
.wildcards
) {
3868 ofm
->priority
= htons(UINT16_MAX
);
3871 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3872 n_actions
, p
->max_ports
);
3877 switch (ntohs(ofm
->command
)) {
3879 return add_flow(p
, ofconn
, ofm
, n_actions
);
3882 return modify_flows_loose(p
, ofconn
, ofm
, n_actions
);
3884 case OFPFC_MODIFY_STRICT
:
3885 return modify_flow_strict(p
, ofconn
, ofm
, n_actions
);
3888 delete_flows_loose(p
, ofm
);
3891 case OFPFC_DELETE_STRICT
:
3892 delete_flow_strict(p
, ofm
);
3896 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3901 handle_tun_id_from_cookie(struct ofproto
*p
, struct nxt_tun_id_cookie
*msg
)
3905 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
3910 p
->flow_format
= msg
->set
? NXFF_TUN_ID_FROM_COOKIE
: NXFF_OPENFLOW10
;
3915 handle_role_request(struct ofproto
*ofproto
,
3916 struct ofconn
*ofconn
, struct nicira_header
*msg
)
3918 struct nx_role_request
*nrr
;
3919 struct nx_role_request
*reply
;
3923 if (ntohs(msg
->header
.length
) != sizeof *nrr
) {
3924 VLOG_WARN_RL(&rl
, "received role request of length %u (expected %zu)",
3925 ntohs(msg
->header
.length
), sizeof *nrr
);
3926 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3928 nrr
= (struct nx_role_request
*) msg
;
3930 if (ofconn
->type
!= OFCONN_PRIMARY
) {
3931 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
3933 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3936 role
= ntohl(nrr
->role
);
3937 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
3938 && role
!= NX_ROLE_SLAVE
) {
3939 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
3941 /* There's no good error code for this. */
3942 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
3945 if (role
== NX_ROLE_MASTER
) {
3946 struct ofconn
*other
;
3948 HMAP_FOR_EACH (other
, hmap_node
, &ofproto
->controllers
) {
3949 if (other
->role
== NX_ROLE_MASTER
) {
3950 other
->role
= NX_ROLE_SLAVE
;
3954 ofconn
->role
= role
;
3956 reply
= make_nxmsg_xid(sizeof *reply
, NXT_ROLE_REPLY
, msg
->header
.xid
,
3958 reply
->role
= htonl(role
);
3959 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3965 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3967 struct ofp_vendor_header
*ovh
= msg
;
3968 struct nicira_header
*nh
;
3970 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3971 VLOG_WARN_RL(&rl
, "received vendor message of length %u "
3972 "(expected at least %zu)",
3973 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
3974 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3976 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3977 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3979 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3980 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %u "
3981 "(expected at least %zu)",
3982 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
3983 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3987 switch (ntohl(nh
->subtype
)) {
3988 case NXT_STATUS_REQUEST
:
3989 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3992 case NXT_TUN_ID_FROM_COOKIE
:
3993 return handle_tun_id_from_cookie(p
, msg
);
3995 case NXT_ROLE_REQUEST
:
3996 return handle_role_request(p
, ofconn
, msg
);
3999 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
4003 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
4005 struct ofp_header
*ob
;
4008 /* Currently, everything executes synchronously, so we can just
4009 * immediately send the barrier reply. */
4010 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
4011 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4016 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
4017 struct ofpbuf
*ofp_msg
)
4019 struct ofp_header
*oh
= ofp_msg
->data
;
4022 COVERAGE_INC(ofproto_recv_openflow
);
4024 case OFPT_ECHO_REQUEST
:
4025 error
= handle_echo_request(ofconn
, oh
);
4028 case OFPT_ECHO_REPLY
:
4032 case OFPT_FEATURES_REQUEST
:
4033 error
= handle_features_request(p
, ofconn
, oh
);
4036 case OFPT_GET_CONFIG_REQUEST
:
4037 error
= handle_get_config_request(p
, ofconn
, oh
);
4040 case OFPT_SET_CONFIG
:
4041 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
4044 case OFPT_PACKET_OUT
:
4045 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
4049 error
= handle_port_mod(p
, ofconn
, oh
);
4053 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
4056 case OFPT_STATS_REQUEST
:
4057 error
= handle_stats_request(p
, ofconn
, oh
);
4061 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
4064 case OFPT_BARRIER_REQUEST
:
4065 error
= handle_barrier_request(ofconn
, oh
);
4069 if (VLOG_IS_WARN_ENABLED()) {
4070 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4071 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4074 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4079 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4084 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4086 struct odp_msg
*msg
= packet
->data
;
4088 struct ofpbuf payload
;
4091 payload
.data
= msg
+ 1;
4092 payload
.size
= msg
->length
- sizeof *msg
;
4093 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
4095 /* Check with in-band control to see if this packet should be sent
4096 * to the local port regardless of the flow table. */
4097 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
4098 union odp_action action
;
4100 memset(&action
, 0, sizeof(action
));
4101 action
.output
.type
= ODPAT_OUTPUT
;
4102 action
.output
.port
= ODPP_LOCAL
;
4103 dpif_execute(p
->dpif
, &action
, 1, &payload
);
4106 rule
= lookup_valid_rule(p
, &flow
);
4108 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4109 struct ofport
*port
= get_port(p
, msg
->port
);
4111 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4112 COVERAGE_INC(ofproto_no_packet_in
);
4113 /* XXX install 'drop' flow entry */
4114 ofpbuf_delete(packet
);
4118 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
4121 COVERAGE_INC(ofproto_packet_in
);
4122 send_packet_in(p
, packet
);
4126 if (rule
->cr
.wc
.wildcards
) {
4127 rule
= rule_create_subrule(p
, rule
, &flow
);
4128 rule_make_actions(p
, rule
, packet
);
4130 if (!rule
->may_install
) {
4131 /* The rule is not installable, that is, we need to process every
4132 * packet, so process the current packet and set its actions into
4134 rule_make_actions(p
, rule
, packet
);
4136 /* XXX revalidate rule if it needs it */
4140 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4142 * Extra-special case for fail-open mode.
4144 * We are in fail-open mode and the packet matched the fail-open rule,
4145 * but we are connected to a controller too. We should send the packet
4146 * up to the controller in the hope that it will try to set up a flow
4147 * and thereby allow us to exit fail-open.
4149 * See the top-level comment in fail-open.c for more information.
4151 send_packet_in(p
, ofpbuf_clone_with_headroom(packet
,
4152 DPIF_RECV_MSG_PADDING
));
4155 ofpbuf_pull(packet
, sizeof *msg
);
4156 rule_execute(p
, rule
, packet
, &flow
);
4157 rule_reinstall(p
, rule
);
4161 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4163 struct odp_msg
*msg
= packet
->data
;
4165 switch (msg
->type
) {
4166 case _ODPL_ACTION_NR
:
4167 COVERAGE_INC(ofproto_ctlr_action
);
4168 send_packet_in(p
, packet
);
4171 case _ODPL_SFLOW_NR
:
4173 ofproto_sflow_received(p
->sflow
, msg
);
4175 ofpbuf_delete(packet
);
4179 handle_odp_miss_msg(p
, packet
);
4183 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
4189 /* Flow expiration. */
4191 struct expire_cbdata
{
4192 struct ofproto
*ofproto
;
4196 static int ofproto_dp_max_idle(const struct ofproto
*);
4197 static void ofproto_update_used(struct ofproto
*);
4198 static void rule_expire(struct cls_rule
*, void *cbdata
);
4200 /* This function is called periodically by ofproto_run(). Its job is to
4201 * collect updates for the flows that have been installed into the datapath,
4202 * most importantly when they last were used, and then use that information to
4203 * expire flows that have not been used recently.
4205 * Returns the number of milliseconds after which it should be called again. */
4207 ofproto_expire(struct ofproto
*ofproto
)
4209 struct expire_cbdata cbdata
;
4211 /* Update 'used' for each flow in the datapath. */
4212 ofproto_update_used(ofproto
);
4214 /* Expire idle flows.
4216 * A wildcarded flow is idle only when all of its subrules have expired due
4217 * to becoming idle, so iterate through the exact-match flows first. */
4218 cbdata
.ofproto
= ofproto
;
4219 cbdata
.dp_max_idle
= ofproto_dp_max_idle(ofproto
);
4220 classifier_for_each(&ofproto
->cls
, CLS_INC_EXACT
, rule_expire
, &cbdata
);
4221 classifier_for_each(&ofproto
->cls
, CLS_INC_WILD
, rule_expire
, &cbdata
);
4223 /* Let the hook know that we're at a stable point: all outstanding data
4224 * in existing flows has been accounted to the account_cb. Thus, the
4225 * hook can now reasonably do operations that depend on having accurate
4226 * flow volume accounting (currently, that's just bond rebalancing). */
4227 if (ofproto
->ofhooks
->account_checkpoint_cb
) {
4228 ofproto
->ofhooks
->account_checkpoint_cb(ofproto
->aux
);
4231 return MIN(cbdata
.dp_max_idle
, 1000);
4234 /* Update 'used' member of each flow currently installed into the datapath. */
4236 ofproto_update_used(struct ofproto
*p
)
4238 struct odp_flow
*flows
;
4243 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4248 for (i
= 0; i
< n_flows
; i
++) {
4249 struct odp_flow
*f
= &flows
[i
];
4250 struct cls_rule target
;
4254 odp_flow_key_to_flow(&f
->key
, &flow
);
4255 cls_rule_from_flow(&flow
, 0, UINT16_MAX
, &target
);
4257 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&p
->cls
,
4260 if (rule
&& rule
->installed
) {
4261 update_time(p
, rule
, &f
->stats
);
4262 rule_account(p
, rule
, f
->stats
.n_bytes
);
4264 /* There's a flow in the datapath that we know nothing about.
4266 COVERAGE_INC(ofproto_unexpected_rule
);
4267 dpif_flow_del(p
->dpif
, f
);
4274 /* Calculates and returns the number of milliseconds of idle time after which
4275 * flows should expire from the datapath and we should fold their statistics
4276 * into their parent rules in userspace. */
4278 ofproto_dp_max_idle(const struct ofproto
*ofproto
)
4281 * Idle time histogram.
4283 * Most of the time a switch has a relatively small number of flows. When
4284 * this is the case we might as well keep statistics for all of them in
4285 * userspace and to cache them in the kernel datapath for performance as
4288 * As the number of flows increases, the memory required to maintain
4289 * statistics about them in userspace and in the kernel becomes
4290 * significant. However, with a large number of flows it is likely that
4291 * only a few of them are "heavy hitters" that consume a large amount of
4292 * bandwidth. At this point, only heavy hitters are worth caching in the
4293 * kernel and maintaining in userspaces; other flows we can discard.
4295 * The technique used to compute the idle time is to build a histogram with
4296 * N_BUCKETS bucket whose width is BUCKET_WIDTH msecs each. Each flow that
4297 * is installed in the kernel gets dropped in the appropriate bucket.
4298 * After the histogram has been built, we compute the cutoff so that only
4299 * the most-recently-used 1% of flows (but at least 1000 flows) are kept
4300 * cached. At least the most-recently-used bucket of flows is kept, so
4301 * actually an arbitrary number of flows can be kept in any given
4302 * expiration run (though the next run will delete most of those unless
4303 * they receive additional data).
4305 * This requires a second pass through the exact-match flows, in addition
4306 * to the pass made by ofproto_update_used(), because the former function
4307 * never looks at uninstallable flows.
4309 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4310 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4311 int buckets
[N_BUCKETS
] = { 0 };
4317 total
= classifier_count_exact(&ofproto
->cls
);
4318 if (total
<= 1000) {
4319 return N_BUCKETS
* BUCKET_WIDTH
;
4322 /* Build histogram. */
4324 CLASSIFIER_FOR_EACH_EXACT_RULE (rule
, cr
, &ofproto
->cls
) {
4325 long long int idle
= now
- rule
->used
;
4326 int bucket
= (idle
<= 0 ? 0
4327 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4328 : (unsigned int) idle
/ BUCKET_WIDTH
);
4332 /* Find the first bucket whose flows should be expired. */
4333 for (bucket
= 0; bucket
< N_BUCKETS
; bucket
++) {
4334 if (buckets
[bucket
]) {
4337 subtotal
+= buckets
[bucket
++];
4338 } while (bucket
< N_BUCKETS
&& subtotal
< MAX(1000, total
/ 100));
4343 if (VLOG_IS_DBG_ENABLED()) {
4347 ds_put_cstr(&s
, "keep");
4348 for (i
= 0; i
< N_BUCKETS
; i
++) {
4350 ds_put_cstr(&s
, ", drop");
4353 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4356 VLOG_INFO("%s: %s (msec:count)",
4357 dpif_name(ofproto
->dpif
), ds_cstr(&s
));
4361 return bucket
* BUCKET_WIDTH
;
4365 rule_active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
4367 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
4368 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
4369 struct ofexpired expired
;
4370 struct odp_flow odp_flow
;
4372 /* Get updated flow stats.
4374 * XXX We could avoid this call entirely if (1) ofproto_update_used()
4375 * updated TCP flags and (2) the dpif_flow_list_all() in
4376 * ofproto_update_used() zeroed TCP flags. */
4377 memset(&odp_flow
, 0, sizeof odp_flow
);
4378 if (rule
->installed
) {
4379 odp_flow_key_from_flow(&odp_flow
.key
, &rule
->cr
.flow
);
4380 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
4381 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
4383 if (odp_flow
.stats
.n_packets
) {
4384 update_time(ofproto
, rule
, &odp_flow
.stats
);
4385 netflow_flow_update_flags(&rule
->nf_flow
,
4386 odp_flow
.stats
.tcp_flags
);
4390 expired
.flow
= rule
->cr
.flow
;
4391 expired
.packet_count
= rule
->packet_count
+
4392 odp_flow
.stats
.n_packets
;
4393 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
4394 expired
.used
= rule
->used
;
4396 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
4400 /* If 'cls_rule' is an OpenFlow rule, that has expired according to OpenFlow
4401 * rules, then delete it entirely.
4403 * If 'cls_rule' is a subrule, that has not been used recently, remove it from
4404 * the datapath and fold its statistics back into its super-rule.
4406 * (This is a callback function for classifier_for_each().) */
4408 rule_expire(struct cls_rule
*cls_rule
, void *cbdata_
)
4410 struct expire_cbdata
*cbdata
= cbdata_
;
4411 struct ofproto
*ofproto
= cbdata
->ofproto
;
4412 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
4413 long long int hard_expire
, idle_expire
, expire
, now
;
4415 /* Calculate OpenFlow expiration times for 'rule'. */
4416 hard_expire
= (rule
->hard_timeout
4417 ? rule
->created
+ rule
->hard_timeout
* 1000
4419 idle_expire
= (rule
->idle_timeout
4420 && (rule
->super
|| list_is_empty(&rule
->list
))
4421 ? rule
->used
+ rule
->idle_timeout
* 1000
4423 expire
= MIN(hard_expire
, idle_expire
);
4427 /* 'rule' has not expired according to OpenFlow rules. */
4428 if (!rule
->cr
.wc
.wildcards
) {
4429 if (now
>= rule
->used
+ cbdata
->dp_max_idle
) {
4430 /* This rule is idle, so drop it to free up resources. */
4432 /* It's not part of the OpenFlow flow table, so we can
4433 * delete it entirely and fold its statistics into its
4435 rule_remove(ofproto
, rule
);
4437 /* It is part of the OpenFlow flow table, so we have to
4438 * keep the rule but we can at least uninstall it from the
4440 rule_uninstall(ofproto
, rule
);
4443 /* Send NetFlow active timeout if appropriate. */
4444 rule_active_timeout(cbdata
->ofproto
, rule
);
4448 /* 'rule' has expired according to OpenFlow rules. */
4449 COVERAGE_INC(ofproto_expired
);
4451 /* Update stats. (This is a no-op if the rule expired due to an idle
4452 * timeout, because that only happens when the rule has no subrules
4454 if (rule
->cr
.wc
.wildcards
) {
4455 struct rule
*subrule
, *next
;
4456 LIST_FOR_EACH_SAFE (subrule
, next
, list
, &rule
->list
) {
4457 rule_remove(cbdata
->ofproto
, subrule
);
4460 rule_uninstall(cbdata
->ofproto
, rule
);
4463 /* Get rid of the rule. */
4464 if (!rule_is_hidden(rule
)) {
4465 send_flow_removed(cbdata
->ofproto
, rule
, now
,
4467 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
4469 rule_remove(cbdata
->ofproto
, rule
);
4474 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
4476 struct rule
*sub
= rule_from_cls_rule(sub_
);
4477 struct revalidate_cbdata
*cbdata
= cbdata_
;
4479 if (cbdata
->revalidate_all
4480 || (cbdata
->revalidate_subrules
&& sub
->super
)
4481 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
4482 revalidate_rule(cbdata
->ofproto
, sub
);
4487 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
4489 const struct flow
*flow
= &rule
->cr
.flow
;
4491 COVERAGE_INC(ofproto_revalidate_rule
);
4494 super
= rule_from_cls_rule(classifier_lookup(&p
->cls
, flow
,
4497 rule_remove(p
, rule
);
4499 } else if (super
!= rule
->super
) {
4500 COVERAGE_INC(ofproto_revalidate_moved
);
4501 list_remove(&rule
->list
);
4502 list_push_back(&super
->list
, &rule
->list
);
4503 rule
->super
= super
;
4504 rule
->hard_timeout
= super
->hard_timeout
;
4505 rule
->idle_timeout
= super
->idle_timeout
;
4506 rule
->created
= super
->created
;
4511 rule_update_actions(p
, rule
);
4515 static struct ofpbuf
*
4516 compose_flow_removed(struct ofproto
*p
, const struct rule
*rule
,
4517 long long int now
, uint8_t reason
)
4519 struct ofp_flow_removed
*ofr
;
4521 long long int tdiff
= now
- rule
->created
;
4522 uint32_t sec
= tdiff
/ 1000;
4523 uint32_t msec
= tdiff
- (sec
* 1000);
4525 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
4526 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, p
->flow_format
,
4528 ofr
->cookie
= rule
->flow_cookie
;
4529 ofr
->priority
= htons(rule
->cr
.priority
);
4530 ofr
->reason
= reason
;
4531 ofr
->duration_sec
= htonl(sec
);
4532 ofr
->duration_nsec
= htonl(msec
* 1000000);
4533 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4534 ofr
->packet_count
= htonll(rule
->packet_count
);
4535 ofr
->byte_count
= htonll(rule
->byte_count
);
4541 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
4542 long long int now
, uint8_t reason
)
4544 struct ofconn
*ofconn
;
4546 if (!rule
->send_flow_removed
) {
4550 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
4553 if (!rconn_is_connected(ofconn
->rconn
)
4554 || !ofconn_receives_async_msgs(ofconn
)) {
4558 msg
= compose_flow_removed(p
, rule
, now
, reason
);
4560 /* Account flow expirations under ofconn->reply_counter, the counter
4561 * for replies to OpenFlow requests. That works because preventing
4562 * OpenFlow requests from being processed also prevents new flows from
4563 * being added (and expiring). (It also prevents processing OpenFlow
4564 * requests that would not add new flows, so it is imperfect.) */
4565 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
4569 /* pinsched callback for sending 'packet' on 'ofconn'. */
4571 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4573 struct ofconn
*ofconn
= ofconn_
;
4575 rconn_send_with_limit(ofconn
->rconn
, packet
,
4576 ofconn
->packet_in_counter
, 100);
4579 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4580 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4581 * packet scheduler for sending.
4583 * 'max_len' specifies the maximum number of bytes of the packet to send on
4584 * 'ofconn' (INT_MAX specifies no limit).
4586 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4587 * ownership is transferred to this function. */
4589 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4592 struct ofproto
*ofproto
= ofconn
->ofproto
;
4593 struct ofp_packet_in
*opi
= packet
->data
;
4594 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4595 int send_len
, trim_size
;
4599 if (opi
->reason
== OFPR_ACTION
) {
4600 buffer_id
= UINT32_MAX
;
4601 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4602 buffer_id
= pktbuf_get_null();
4603 } else if (!ofconn
->pktbuf
) {
4604 buffer_id
= UINT32_MAX
;
4606 struct ofpbuf payload
;
4607 payload
.data
= opi
->data
;
4608 payload
.size
= packet
->size
- offsetof(struct ofp_packet_in
, data
);
4609 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4612 /* Figure out how much of the packet to send. */
4613 send_len
= ntohs(opi
->total_len
);
4614 if (buffer_id
!= UINT32_MAX
) {
4615 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4617 send_len
= MIN(send_len
, max_len
);
4619 /* Adjust packet length and clone if necessary. */
4620 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4622 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4625 packet
->size
= trim_size
;
4628 /* Update packet headers. */
4629 opi
->buffer_id
= htonl(buffer_id
);
4630 update_openflow_length(packet
);
4632 /* Hand over to packet scheduler. It might immediately call into
4633 * do_send_packet_in() or it might buffer it for a while (until a later
4634 * call to pinsched_run()). */
4635 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4636 packet
, do_send_packet_in
, ofconn
);
4639 /* Replace struct odp_msg header in 'packet' by equivalent struct
4640 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4641 * returned by dpif_recv()).
4643 * The conversion is not complete: the caller still needs to trim any unneeded
4644 * payload off the end of the buffer, set the length in the OpenFlow header,
4645 * and set buffer_id. Those require us to know the controller settings and so
4646 * must be done on a per-controller basis.
4648 * Returns the maximum number of bytes of the packet that should be sent to
4649 * the controller (INT_MAX if no limit). */
4651 do_convert_to_packet_in(struct ofpbuf
*packet
)
4653 struct odp_msg
*msg
= packet
->data
;
4654 struct ofp_packet_in
*opi
;
4660 /* Extract relevant header fields */
4661 if (msg
->type
== _ODPL_ACTION_NR
) {
4662 reason
= OFPR_ACTION
;
4665 reason
= OFPR_NO_MATCH
;
4668 total_len
= msg
->length
- sizeof *msg
;
4669 in_port
= odp_port_to_ofp_port(msg
->port
);
4671 /* Repurpose packet buffer by overwriting header. */
4672 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4673 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4674 opi
->header
.version
= OFP_VERSION
;
4675 opi
->header
.type
= OFPT_PACKET_IN
;
4676 opi
->total_len
= htons(total_len
);
4677 opi
->in_port
= htons(in_port
);
4678 opi
->reason
= reason
;
4683 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4684 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4685 * as necessary according to their individual configurations.
4687 * 'packet' must have sufficient headroom to convert it into a struct
4688 * ofp_packet_in (e.g. as returned by dpif_recv()).
4690 * Takes ownership of 'packet'. */
4692 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
4694 struct ofconn
*ofconn
, *prev
;
4697 max_len
= do_convert_to_packet_in(packet
);
4700 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
4701 if (ofconn_receives_async_msgs(ofconn
)) {
4703 schedule_packet_in(prev
, packet
, max_len
, true);
4709 schedule_packet_in(prev
, packet
, max_len
, false);
4711 ofpbuf_delete(packet
);
4716 pick_datapath_id(const struct ofproto
*ofproto
)
4718 const struct ofport
*port
;
4720 port
= get_port(ofproto
, ODPP_LOCAL
);
4722 uint8_t ea
[ETH_ADDR_LEN
];
4725 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4727 return eth_addr_to_uint64(ea
);
4729 VLOG_WARN("could not get MAC address for %s (%s)",
4730 netdev_get_name(port
->netdev
), strerror(error
));
4732 return ofproto
->fallback_dpid
;
4736 pick_fallback_dpid(void)
4738 uint8_t ea
[ETH_ADDR_LEN
];
4739 eth_addr_nicira_random(ea
);
4740 return eth_addr_to_uint64(ea
);
4744 default_normal_ofhook_cb(const struct flow
*flow
, const struct ofpbuf
*packet
,
4745 struct odp_actions
*actions
, tag_type
*tags
,
4746 uint16_t *nf_output_iface
, void *ofproto_
)
4748 struct ofproto
*ofproto
= ofproto_
;
4751 /* Drop frames for reserved multicast addresses. */
4752 if (eth_addr_is_reserved(flow
->dl_dst
)) {
4756 /* Learn source MAC (but don't try to learn from revalidation). */
4757 if (packet
!= NULL
) {
4758 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
4760 GRAT_ARP_LOCK_NONE
);
4762 /* The log messages here could actually be useful in debugging,
4763 * so keep the rate limit relatively high. */
4764 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
4765 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
4766 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
4767 ofproto_revalidate(ofproto
, rev_tag
);
4771 /* Determine output port. */
4772 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
4775 flood_packets(ofproto
, flow
->in_port
, OFPPC_NO_FLOOD
,
4776 nf_output_iface
, actions
);
4777 } else if (out_port
!= flow
->in_port
) {
4778 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
4779 *nf_output_iface
= out_port
;
4787 static const struct ofhooks default_ofhooks
= {
4788 default_normal_ofhook_cb
,