2 * Copyright (c) 2009, 2010, 2011 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"
38 #include "multipath.h"
44 #include "ofp-print.h"
46 #include "ofproto-sflow.h"
48 #include "openflow/nicira-ext.h"
49 #include "openflow/openflow.h"
50 #include "openvswitch/datapath-protocol.h"
54 #include "poll-loop.h"
58 #include "stream-ssl.h"
66 VLOG_DEFINE_THIS_MODULE(ofproto
);
68 COVERAGE_DEFINE(facet_changed_rule
);
69 COVERAGE_DEFINE(facet_revalidate
);
70 COVERAGE_DEFINE(odp_overflow
);
71 COVERAGE_DEFINE(ofproto_agg_request
);
72 COVERAGE_DEFINE(ofproto_costly_flags
);
73 COVERAGE_DEFINE(ofproto_ctlr_action
);
74 COVERAGE_DEFINE(ofproto_del_rule
);
75 COVERAGE_DEFINE(ofproto_error
);
76 COVERAGE_DEFINE(ofproto_expiration
);
77 COVERAGE_DEFINE(ofproto_expired
);
78 COVERAGE_DEFINE(ofproto_flows_req
);
79 COVERAGE_DEFINE(ofproto_flush
);
80 COVERAGE_DEFINE(ofproto_invalidated
);
81 COVERAGE_DEFINE(ofproto_no_packet_in
);
82 COVERAGE_DEFINE(ofproto_ofconn_stuck
);
83 COVERAGE_DEFINE(ofproto_ofp2odp
);
84 COVERAGE_DEFINE(ofproto_packet_in
);
85 COVERAGE_DEFINE(ofproto_packet_out
);
86 COVERAGE_DEFINE(ofproto_queue_req
);
87 COVERAGE_DEFINE(ofproto_recv_openflow
);
88 COVERAGE_DEFINE(ofproto_reinit_ports
);
89 COVERAGE_DEFINE(ofproto_unexpected_rule
);
90 COVERAGE_DEFINE(ofproto_uninstallable
);
91 COVERAGE_DEFINE(ofproto_update_port
);
93 #include "sflow_api.h"
98 struct hmap_node hmap_node
; /* In struct ofproto's "ports" hmap. */
99 struct netdev
*netdev
;
100 struct ofp_phy_port opp
; /* In host byte order. */
104 static void ofport_free(struct ofport
*);
105 static void hton_ofp_phy_port(struct ofp_phy_port
*);
107 struct action_xlate_ctx
{
108 /* action_xlate_ctx_init() initializes these members. */
111 struct ofproto
*ofproto
;
113 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
114 * this flow when actions change header fields. */
117 /* The packet corresponding to 'flow', or a null pointer if we are
118 * revalidating without a packet to refer to. */
119 const struct ofpbuf
*packet
;
121 /* If nonnull, called just before executing a resubmit action.
123 * This is normally null so the client has to set it manually after
124 * calling action_xlate_ctx_init(). */
125 void (*resubmit_hook
)(struct action_xlate_ctx
*, const struct rule
*);
127 /* xlate_actions() initializes and uses these members. The client might want
128 * to look at them after it returns. */
130 struct ofpbuf
*odp_actions
; /* Datapath actions. */
131 tag_type tags
; /* Tags associated with OFPP_NORMAL actions. */
132 bool may_set_up_flow
; /* True ordinarily; false if the actions must
133 * be reassessed for every packet. */
134 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
136 /* xlate_actions() initializes and uses these members, but the client has no
137 * reason to look at them. */
139 int recurse
; /* Recursion level, via xlate_table_action. */
140 int last_pop_priority
; /* Offset in 'odp_actions' just past most
141 * recent ODP_ACTION_ATTR_SET_PRIORITY. */
144 static void action_xlate_ctx_init(struct action_xlate_ctx
*,
145 struct ofproto
*, const struct flow
*,
146 const struct ofpbuf
*);
147 static struct ofpbuf
*xlate_actions(struct action_xlate_ctx
*,
148 const union ofp_action
*in
, size_t n_in
);
150 /* An OpenFlow flow. */
152 long long int used
; /* Time last used; time created if not used. */
153 long long int created
; /* Creation time. */
157 * - Do include packets and bytes from facets that have been deleted or
158 * whose own statistics have been folded into the rule.
160 * - Do include packets and bytes sent "by hand" that were accounted to
161 * the rule without any facet being involved (this is a rare corner
162 * case in rule_execute()).
164 * - Do not include packet or bytes that can be obtained from any facet's
165 * packet_count or byte_count member or that can be obtained from the
166 * datapath by, e.g., dpif_flow_get() for any facet.
168 uint64_t packet_count
; /* Number of packets received. */
169 uint64_t byte_count
; /* Number of bytes received. */
171 ovs_be64 flow_cookie
; /* Controller-issued identifier. */
173 struct cls_rule cr
; /* In owning ofproto's classifier. */
174 uint16_t idle_timeout
; /* In seconds from time of last use. */
175 uint16_t hard_timeout
; /* In seconds from time of creation. */
176 bool send_flow_removed
; /* Send a flow removed message? */
177 int n_actions
; /* Number of elements in actions[]. */
178 union ofp_action
*actions
; /* OpenFlow actions. */
179 struct list facets
; /* List of "struct facet"s. */
182 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
183 static bool rule_is_hidden(const struct rule
*);
185 static struct rule
*rule_create(const struct cls_rule
*,
186 const union ofp_action
*, size_t n_actions
,
187 uint16_t idle_timeout
, uint16_t hard_timeout
,
188 ovs_be64 flow_cookie
, bool send_flow_removed
);
189 static void rule_destroy(struct ofproto
*, struct rule
*);
190 static void rule_free(struct rule
*);
192 static struct rule
*rule_lookup(struct ofproto
*, const struct flow
*);
193 static void rule_insert(struct ofproto
*, struct rule
*);
194 static void rule_remove(struct ofproto
*, struct rule
*);
196 static void rule_send_removed(struct ofproto
*, struct rule
*, uint8_t reason
);
198 /* An exact-match instantiation of an OpenFlow flow. */
200 long long int used
; /* Time last used; time created if not used. */
204 * - Do include packets and bytes sent "by hand", e.g. with
207 * - Do include packets and bytes that were obtained from the datapath
208 * when a flow was deleted (e.g. dpif_flow_del()) or when its
209 * statistics were reset (e.g. dpif_flow_put() with
210 * DPIF_FP_ZERO_STATS).
212 * - Do not include any packets or bytes that can currently be obtained
213 * from the datapath by, e.g., dpif_flow_get().
215 uint64_t packet_count
; /* Number of packets received. */
216 uint64_t byte_count
; /* Number of bytes received. */
218 /* Number of bytes passed to account_cb. This may include bytes that can
219 * currently obtained from the datapath (thus, it can be greater than
221 uint64_t accounted_bytes
;
223 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
224 struct list list_node
; /* In owning rule's 'facets' list. */
225 struct rule
*rule
; /* Owning rule. */
226 struct flow flow
; /* Exact-match flow. */
227 bool installed
; /* Installed in datapath? */
228 bool may_install
; /* True ordinarily; false if actions must
229 * be reassessed for every packet. */
230 size_t actions_len
; /* Number of bytes in actions[]. */
231 struct nlattr
*actions
; /* Datapath actions. */
232 tag_type tags
; /* Tags (set only by hooks). */
233 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
236 static struct facet
*facet_create(struct ofproto
*, struct rule
*,
238 const struct ofpbuf
*packet
);
239 static void facet_remove(struct ofproto
*, struct facet
*);
240 static void facet_free(struct facet
*);
242 static struct facet
*facet_lookup_valid(struct ofproto
*, const struct flow
*);
243 static bool facet_revalidate(struct ofproto
*, struct facet
*);
245 static void facet_install(struct ofproto
*, struct facet
*, bool zero_stats
);
246 static void facet_uninstall(struct ofproto
*, struct facet
*);
247 static void facet_flush_stats(struct ofproto
*, struct facet
*);
249 static void facet_make_actions(struct ofproto
*, struct facet
*,
250 const struct ofpbuf
*packet
);
251 static void facet_update_stats(struct ofproto
*, struct facet
*,
252 const struct dpif_flow_stats
*);
254 /* ofproto supports two kinds of OpenFlow connections:
256 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
257 * maintains persistent connections to these controllers and by default
258 * sends them asynchronous messages such as packet-ins.
260 * - "Service" connections, e.g. from ovs-ofctl. When these connections
261 * drop, it is the other side's responsibility to reconnect them if
262 * necessary. ofproto does not send them asynchronous messages by default.
264 * Currently, active (tcp, ssl, unix) connections are always "primary"
265 * connections and passive (ptcp, pssl, punix) connections are always "service"
266 * connections. There is no inherent reason for this, but it reflects the
270 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
271 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
274 /* A listener for incoming OpenFlow "service" connections. */
276 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
277 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
279 /* These are not used by ofservice directly. They are settings for
280 * accepted "struct ofconn"s from the pvconn. */
281 int probe_interval
; /* Max idle time before probing, in seconds. */
282 int rate_limit
; /* Max packet-in rate in packets per second. */
283 int burst_limit
; /* Limit on accumulating packet credits. */
286 static struct ofservice
*ofservice_lookup(struct ofproto
*,
288 static int ofservice_create(struct ofproto
*,
289 const struct ofproto_controller
*);
290 static void ofservice_reconfigure(struct ofservice
*,
291 const struct ofproto_controller
*);
292 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
294 /* An OpenFlow connection. */
296 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
297 struct list node
; /* In struct ofproto's "all_conns" list. */
298 struct rconn
*rconn
; /* OpenFlow connection. */
299 enum ofconn_type type
; /* Type. */
300 enum nx_flow_format flow_format
; /* Currently selected flow format. */
302 /* OFPT_PACKET_IN related data. */
303 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
304 #define N_SCHEDULERS 2
305 struct pinsched
*schedulers
[N_SCHEDULERS
];
306 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
307 int miss_send_len
; /* Bytes to send of buffered packets. */
309 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
310 * requests, and the maximum number before we stop reading OpenFlow
312 #define OFCONN_REPLY_MAX 100
313 struct rconn_packet_counter
*reply_counter
;
315 /* type == OFCONN_PRIMARY only. */
316 enum nx_role role
; /* Role. */
317 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
318 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
319 struct status_category
*ss
; /* Switch status category. */
320 enum ofproto_band band
; /* In-band or out-of-band? */
324 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
326 static void ofconn_destroy(struct ofconn
*);
327 static void ofconn_run(struct ofconn
*);
328 static void ofconn_wait(struct ofconn
*);
329 static bool ofconn_receives_async_msgs(const struct ofconn
*);
330 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
331 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
333 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
334 struct rconn_packet_counter
*counter
);
336 static void send_packet_in(struct ofproto
*, struct dpif_upcall
*,
337 const struct flow
*, bool clone
);
338 static void do_send_packet_in(struct ofpbuf
*ofp_packet_in
, void *ofconn
);
342 uint64_t datapath_id
; /* Datapath ID. */
343 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
344 char *mfr_desc
; /* Manufacturer. */
345 char *hw_desc
; /* Hardware. */
346 char *sw_desc
; /* Software version. */
347 char *serial_desc
; /* Serial number. */
348 char *dp_desc
; /* Datapath description. */
352 struct netdev_monitor
*netdev_monitor
;
353 struct hmap ports
; /* Contains "struct ofport"s. */
354 struct shash port_by_name
;
358 struct switch_status
*switch_status
;
359 struct fail_open
*fail_open
;
360 struct netflow
*netflow
;
361 struct ofproto_sflow
*sflow
;
363 /* In-band control. */
364 struct in_band
*in_band
;
365 long long int next_in_band_update
;
366 struct sockaddr_in
*extra_in_band_remotes
;
367 size_t n_extra_remotes
;
371 struct classifier cls
;
372 long long int next_expiration
;
376 bool need_revalidate
;
377 struct tag_set revalidate_set
;
379 /* OpenFlow connections. */
380 struct hmap controllers
; /* Controller "struct ofconn"s. */
381 struct list all_conns
; /* Contains "struct ofconn"s. */
382 enum ofproto_fail_mode fail_mode
;
384 /* OpenFlow listeners. */
385 struct hmap services
; /* Contains "struct ofservice"s. */
386 struct pvconn
**snoops
;
389 /* Hooks for ovs-vswitchd. */
390 const struct ofhooks
*ofhooks
;
393 /* Used by default ofhooks. */
394 struct mac_learning
*ml
;
397 /* Map from dpif name to struct ofproto, for use by unixctl commands. */
398 static struct shash all_ofprotos
= SHASH_INITIALIZER(&all_ofprotos
);
400 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
402 static const struct ofhooks default_ofhooks
;
404 static uint64_t pick_datapath_id(const struct ofproto
*);
405 static uint64_t pick_fallback_dpid(void);
407 static int ofproto_expire(struct ofproto
*);
409 static void handle_upcall(struct ofproto
*, struct dpif_upcall
*);
411 static void handle_openflow(struct ofconn
*, struct ofpbuf
*);
413 static struct ofport
*get_port(const struct ofproto
*, uint16_t odp_port
);
414 static void update_port(struct ofproto
*, const char *devname
);
415 static int init_ports(struct ofproto
*);
416 static void reinit_ports(struct ofproto
*);
418 static void ofproto_unixctl_init(void);
421 ofproto_create(const char *datapath
, const char *datapath_type
,
422 const struct ofhooks
*ofhooks
, void *aux
,
423 struct ofproto
**ofprotop
)
431 ofproto_unixctl_init();
433 /* Connect to datapath and start listening for messages. */
434 error
= dpif_open(datapath
, datapath_type
, &dpif
);
436 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
439 error
= dpif_recv_set_mask(dpif
,
440 ((1u << DPIF_UC_MISS
) |
441 (1u << DPIF_UC_ACTION
) |
442 (1u << DPIF_UC_SAMPLE
)));
444 VLOG_ERR("failed to listen on datapath %s: %s",
445 datapath
, strerror(error
));
449 dpif_flow_flush(dpif
);
450 dpif_recv_purge(dpif
);
452 /* Initialize settings. */
453 p
= xzalloc(sizeof *p
);
454 p
->fallback_dpid
= pick_fallback_dpid();
455 p
->datapath_id
= p
->fallback_dpid
;
456 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
457 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
458 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
459 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
460 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
462 /* Initialize datapath. */
464 p
->netdev_monitor
= netdev_monitor_create();
465 hmap_init(&p
->ports
);
466 shash_init(&p
->port_by_name
);
467 p
->max_ports
= dpif_get_max_ports(dpif
);
469 /* Initialize submodules. */
470 p
->switch_status
= switch_status_create(p
);
475 /* Initialize in-band control. */
477 p
->in_band_queue
= -1;
479 /* Initialize flow table. */
480 classifier_init(&p
->cls
);
481 p
->next_expiration
= time_msec() + 1000;
483 /* Initialize facet table. */
484 hmap_init(&p
->facets
);
485 p
->need_revalidate
= false;
486 tag_set_init(&p
->revalidate_set
);
488 /* Initialize OpenFlow connections. */
489 list_init(&p
->all_conns
);
490 hmap_init(&p
->controllers
);
491 hmap_init(&p
->services
);
495 /* Initialize hooks. */
497 p
->ofhooks
= ofhooks
;
501 p
->ofhooks
= &default_ofhooks
;
503 p
->ml
= mac_learning_create();
506 /* Pick final datapath ID. */
507 p
->datapath_id
= pick_datapath_id(p
);
508 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
510 shash_add_once(&all_ofprotos
, dpif_name(p
->dpif
), p
);
517 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
519 uint64_t old_dpid
= p
->datapath_id
;
520 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
521 if (p
->datapath_id
!= old_dpid
) {
522 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
524 /* Force all active connections to reconnect, since there is no way to
525 * notify a controller that the datapath ID has changed. */
526 ofproto_reconnect_controllers(p
);
531 is_discovery_controller(const struct ofproto_controller
*c
)
533 return !strcmp(c
->target
, "discover");
537 is_in_band_controller(const struct ofproto_controller
*c
)
539 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
542 /* Creates a new controller in 'ofproto'. Some of the settings are initially
543 * drawn from 'c', but update_controller() needs to be called later to finish
544 * the new ofconn's configuration. */
546 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
548 struct discovery
*discovery
;
549 struct ofconn
*ofconn
;
551 if (is_discovery_controller(c
)) {
552 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
553 ofproto
->dpif
, ofproto
->switch_status
,
562 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_PRIMARY
);
563 ofconn
->pktbuf
= pktbuf_create();
564 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
566 ofconn
->discovery
= discovery
;
568 char *name
= ofconn_make_name(ofproto
, c
->target
);
569 rconn_connect(ofconn
->rconn
, c
->target
, name
);
572 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
573 hash_string(c
->target
, 0));
576 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
577 * target or turn discovery on or off (these are done by creating new ofconns
578 * and deleting old ones), but it can update the rest of an ofconn's
581 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
585 ofconn
->band
= (is_in_band_controller(c
)
586 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
588 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
590 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
591 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
593 if (ofconn
->discovery
) {
594 discovery_set_update_resolv_conf(ofconn
->discovery
,
595 c
->update_resolv_conf
);
596 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
599 ofconn_set_rate_limit(ofconn
, c
->rate_limit
, c
->burst_limit
);
603 ofconn_get_target(const struct ofconn
*ofconn
)
605 return ofconn
->discovery
? "discover" : rconn_get_target(ofconn
->rconn
);
608 static struct ofconn
*
609 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
611 struct ofconn
*ofconn
;
613 HMAP_FOR_EACH_WITH_HASH (ofconn
, hmap_node
,
614 hash_string(target
, 0), &ofproto
->controllers
) {
615 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
623 update_in_band_remotes(struct ofproto
*ofproto
)
625 const struct ofconn
*ofconn
;
626 struct sockaddr_in
*addrs
;
627 size_t max_addrs
, n_addrs
;
631 /* Allocate enough memory for as many remotes as we could possibly have. */
632 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
633 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
636 /* Add all the remotes. */
638 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
639 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
641 if (ofconn
->band
== OFPROTO_OUT_OF_BAND
) {
645 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
646 if (sin
->sin_addr
.s_addr
) {
647 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
650 if (ofconn
->discovery
) {
654 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
655 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
658 /* Create or update or destroy in-band.
660 * Ordinarily we only enable in-band if there's at least one remote
661 * address, but discovery needs the in-band rules for DHCP to be installed
662 * even before we know any remote addresses. */
663 if (n_addrs
|| discovery
) {
664 if (!ofproto
->in_band
) {
665 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
668 if (ofproto
->in_band
) {
669 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
671 in_band_set_queue(ofproto
->in_band
, ofproto
->in_band_queue
);
672 ofproto
->next_in_band_update
= time_msec() + 1000;
674 in_band_destroy(ofproto
->in_band
);
675 ofproto
->in_band
= NULL
;
683 update_fail_open(struct ofproto
*p
)
685 struct ofconn
*ofconn
;
687 if (!hmap_is_empty(&p
->controllers
)
688 && p
->fail_mode
== OFPROTO_FAIL_STANDALONE
) {
689 struct rconn
**rconns
;
693 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
697 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
698 HMAP_FOR_EACH (ofconn
, hmap_node
, &p
->controllers
) {
699 rconns
[n
++] = ofconn
->rconn
;
702 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
703 /* p->fail_open takes ownership of 'rconns'. */
705 fail_open_destroy(p
->fail_open
);
711 ofproto_set_controllers(struct ofproto
*p
,
712 const struct ofproto_controller
*controllers
,
713 size_t n_controllers
)
715 struct shash new_controllers
;
716 struct ofconn
*ofconn
, *next_ofconn
;
717 struct ofservice
*ofservice
, *next_ofservice
;
721 /* Create newly configured controllers and services.
722 * Create a name to ofproto_controller mapping in 'new_controllers'. */
723 shash_init(&new_controllers
);
724 for (i
= 0; i
< n_controllers
; i
++) {
725 const struct ofproto_controller
*c
= &controllers
[i
];
727 if (!vconn_verify_name(c
->target
) || !strcmp(c
->target
, "discover")) {
728 if (!find_controller_by_target(p
, c
->target
)) {
729 add_controller(p
, c
);
731 } else if (!pvconn_verify_name(c
->target
)) {
732 if (!ofservice_lookup(p
, c
->target
) && ofservice_create(p
, c
)) {
736 VLOG_WARN_RL(&rl
, "%s: unsupported controller \"%s\"",
737 dpif_name(p
->dpif
), c
->target
);
741 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
744 /* Delete controllers that are no longer configured.
745 * Update configuration of all now-existing controllers. */
747 HMAP_FOR_EACH_SAFE (ofconn
, next_ofconn
, hmap_node
, &p
->controllers
) {
748 struct ofproto_controller
*c
;
750 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
752 ofconn_destroy(ofconn
);
754 update_controller(ofconn
, c
);
761 /* Delete services that are no longer configured.
762 * Update configuration of all now-existing services. */
763 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
764 struct ofproto_controller
*c
;
766 c
= shash_find_data(&new_controllers
,
767 pvconn_get_name(ofservice
->pvconn
));
769 ofservice_destroy(p
, ofservice
);
771 ofservice_reconfigure(ofservice
, c
);
775 shash_destroy(&new_controllers
);
777 update_in_band_remotes(p
);
780 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
781 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
782 struct ofconn
, hmap_node
);
783 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
784 rconn_status_cb
, ofconn
->rconn
);
789 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
791 p
->fail_mode
= fail_mode
;
795 /* Drops the connections between 'ofproto' and all of its controllers, forcing
796 * them to reconnect. */
798 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
800 struct ofconn
*ofconn
;
802 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
803 rconn_reconnect(ofconn
->rconn
);
808 any_extras_changed(const struct ofproto
*ofproto
,
809 const struct sockaddr_in
*extras
, size_t n
)
813 if (n
!= ofproto
->n_extra_remotes
) {
817 for (i
= 0; i
< n
; i
++) {
818 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
819 const struct sockaddr_in
*new = &extras
[i
];
821 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
822 old
->sin_port
!= new->sin_port
) {
830 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
831 * in-band control should guarantee access, in the same way that in-band
832 * control guarantees access to OpenFlow controllers. */
834 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
835 const struct sockaddr_in
*extras
, size_t n
)
837 if (!any_extras_changed(ofproto
, extras
, n
)) {
841 free(ofproto
->extra_in_band_remotes
);
842 ofproto
->n_extra_remotes
= n
;
843 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
845 update_in_band_remotes(ofproto
);
848 /* Sets the OpenFlow queue used by flows set up by in-band control on
849 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
850 * flows will use the default queue. */
852 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
854 if (queue_id
!= ofproto
->in_band_queue
) {
855 ofproto
->in_band_queue
= queue_id
;
856 update_in_band_remotes(ofproto
);
861 ofproto_set_desc(struct ofproto
*p
,
862 const char *mfr_desc
, const char *hw_desc
,
863 const char *sw_desc
, const char *serial_desc
,
866 struct ofp_desc_stats
*ods
;
869 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
870 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
871 sizeof ods
->mfr_desc
);
874 p
->mfr_desc
= xstrdup(mfr_desc
);
877 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
878 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
879 sizeof ods
->hw_desc
);
882 p
->hw_desc
= xstrdup(hw_desc
);
885 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
886 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
887 sizeof ods
->sw_desc
);
890 p
->sw_desc
= xstrdup(sw_desc
);
893 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
894 VLOG_WARN("truncating serial_desc, must be less than %zu "
896 sizeof ods
->serial_num
);
898 free(p
->serial_desc
);
899 p
->serial_desc
= xstrdup(serial_desc
);
902 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
903 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
904 sizeof ods
->dp_desc
);
907 p
->dp_desc
= xstrdup(dp_desc
);
912 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
913 const struct svec
*svec
)
915 struct pvconn
**pvconns
= *pvconnsp
;
916 size_t n_pvconns
= *n_pvconnsp
;
920 for (i
= 0; i
< n_pvconns
; i
++) {
921 pvconn_close(pvconns
[i
]);
925 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
927 for (i
= 0; i
< svec
->n
; i
++) {
928 const char *name
= svec
->names
[i
];
929 struct pvconn
*pvconn
;
932 error
= pvconn_open(name
, &pvconn
);
934 pvconns
[n_pvconns
++] = pvconn
;
936 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
944 *n_pvconnsp
= n_pvconns
;
950 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
952 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
956 ofproto_set_netflow(struct ofproto
*ofproto
,
957 const struct netflow_options
*nf_options
)
959 if (nf_options
&& nf_options
->collectors
.n
) {
960 if (!ofproto
->netflow
) {
961 ofproto
->netflow
= netflow_create();
963 return netflow_set_options(ofproto
->netflow
, nf_options
);
965 netflow_destroy(ofproto
->netflow
);
966 ofproto
->netflow
= NULL
;
972 ofproto_set_sflow(struct ofproto
*ofproto
,
973 const struct ofproto_sflow_options
*oso
)
975 struct ofproto_sflow
*os
= ofproto
->sflow
;
978 struct ofport
*ofport
;
980 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
981 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
982 ofproto_sflow_add_port(os
, ofport
->odp_port
,
983 netdev_get_name(ofport
->netdev
));
986 ofproto_sflow_set_options(os
, oso
);
988 ofproto_sflow_destroy(os
);
989 ofproto
->sflow
= NULL
;
994 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
996 return ofproto
->datapath_id
;
1000 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
1002 return !hmap_is_empty(&ofproto
->controllers
);
1005 enum ofproto_fail_mode
1006 ofproto_get_fail_mode(const struct ofproto
*p
)
1008 return p
->fail_mode
;
1012 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
1016 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
1017 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
1022 ofproto_destroy(struct ofproto
*p
)
1024 struct ofservice
*ofservice
, *next_ofservice
;
1025 struct ofconn
*ofconn
, *next_ofconn
;
1026 struct ofport
*ofport
, *next_ofport
;
1033 shash_find_and_delete(&all_ofprotos
, dpif_name(p
->dpif
));
1035 /* Destroy fail-open and in-band early, since they touch the classifier. */
1036 fail_open_destroy(p
->fail_open
);
1037 p
->fail_open
= NULL
;
1039 in_band_destroy(p
->in_band
);
1041 free(p
->extra_in_band_remotes
);
1043 ofproto_flush_flows(p
);
1044 classifier_destroy(&p
->cls
);
1045 hmap_destroy(&p
->facets
);
1047 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1048 ofconn_destroy(ofconn
);
1050 hmap_destroy(&p
->controllers
);
1052 dpif_close(p
->dpif
);
1053 netdev_monitor_destroy(p
->netdev_monitor
);
1054 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1055 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1056 ofport_free(ofport
);
1058 shash_destroy(&p
->port_by_name
);
1060 switch_status_destroy(p
->switch_status
);
1061 netflow_destroy(p
->netflow
);
1062 ofproto_sflow_destroy(p
->sflow
);
1064 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
1065 ofservice_destroy(p
, ofservice
);
1067 hmap_destroy(&p
->services
);
1069 for (i
= 0; i
< p
->n_snoops
; i
++) {
1070 pvconn_close(p
->snoops
[i
]);
1074 mac_learning_destroy(p
->ml
);
1079 free(p
->serial_desc
);
1082 hmap_destroy(&p
->ports
);
1088 ofproto_run(struct ofproto
*p
)
1090 int error
= ofproto_run1(p
);
1092 error
= ofproto_run2(p
, false);
1098 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1100 if (error
== ENOBUFS
) {
1101 reinit_ports(ofproto
);
1102 } else if (!error
) {
1103 update_port(ofproto
, devname
);
1108 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1109 * means that 'ofconn' is more interesting for monitoring than a lower return
1112 snoop_preference(const struct ofconn
*ofconn
)
1114 switch (ofconn
->role
) {
1115 case NX_ROLE_MASTER
:
1122 /* Shouldn't happen. */
1127 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1128 * Connects this vconn to a controller. */
1130 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1132 struct ofconn
*ofconn
, *best
;
1134 /* Pick a controller for monitoring. */
1136 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
1137 if (ofconn
->type
== OFCONN_PRIMARY
1138 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1144 rconn_add_monitor(best
->rconn
, vconn
);
1146 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1152 ofproto_run1(struct ofproto
*p
)
1154 struct ofconn
*ofconn
, *next_ofconn
;
1155 struct ofservice
*ofservice
;
1160 if (shash_is_empty(&p
->port_by_name
)) {
1164 for (i
= 0; i
< 50; i
++) {
1165 struct dpif_upcall packet
;
1167 error
= dpif_recv(p
->dpif
, &packet
);
1169 if (error
== ENODEV
) {
1170 /* Someone destroyed the datapath behind our back. The caller
1171 * better destroy us and give up, because we're just going to
1172 * spin from here on out. */
1173 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1174 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1175 dpif_name(p
->dpif
));
1181 handle_upcall(p
, &packet
);
1184 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1185 process_port_change(p
, error
, devname
);
1187 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1188 &devname
)) != EAGAIN
) {
1189 process_port_change(p
, error
, devname
);
1193 if (time_msec() >= p
->next_in_band_update
) {
1194 update_in_band_remotes(p
);
1196 in_band_run(p
->in_band
);
1199 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1203 /* Fail-open maintenance. Do this after processing the ofconns since
1204 * fail-open checks the status of the controller rconn. */
1206 fail_open_run(p
->fail_open
);
1209 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1210 struct vconn
*vconn
;
1213 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1215 struct rconn
*rconn
;
1218 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1219 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1220 rconn_connect_unreliably(rconn
, vconn
, name
);
1223 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1224 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1225 ofservice
->burst_limit
);
1226 } else if (retval
!= EAGAIN
) {
1227 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1231 for (i
= 0; i
< p
->n_snoops
; i
++) {
1232 struct vconn
*vconn
;
1235 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1237 add_snooper(p
, vconn
);
1238 } else if (retval
!= EAGAIN
) {
1239 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1243 if (time_msec() >= p
->next_expiration
) {
1244 int delay
= ofproto_expire(p
);
1245 p
->next_expiration
= time_msec() + delay
;
1246 COVERAGE_INC(ofproto_expiration
);
1250 netflow_run(p
->netflow
);
1253 ofproto_sflow_run(p
->sflow
);
1260 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1262 /* Figure out what we need to revalidate now, if anything. */
1263 struct tag_set revalidate_set
= p
->revalidate_set
;
1264 if (p
->need_revalidate
) {
1265 revalidate_all
= true;
1268 /* Clear the revalidation flags. */
1269 tag_set_init(&p
->revalidate_set
);
1270 p
->need_revalidate
= false;
1272 /* Now revalidate if there's anything to do. */
1273 if (revalidate_all
|| !tag_set_is_empty(&revalidate_set
)) {
1274 struct facet
*facet
, *next
;
1276 HMAP_FOR_EACH_SAFE (facet
, next
, hmap_node
, &p
->facets
) {
1278 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
1279 facet_revalidate(p
, facet
);
1288 ofproto_wait(struct ofproto
*p
)
1290 struct ofservice
*ofservice
;
1291 struct ofconn
*ofconn
;
1294 dpif_recv_wait(p
->dpif
);
1295 dpif_port_poll_wait(p
->dpif
);
1296 netdev_monitor_poll_wait(p
->netdev_monitor
);
1297 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1298 ofconn_wait(ofconn
);
1301 poll_timer_wait_until(p
->next_in_band_update
);
1302 in_band_wait(p
->in_band
);
1305 fail_open_wait(p
->fail_open
);
1308 ofproto_sflow_wait(p
->sflow
);
1310 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1311 poll_immediate_wake();
1313 if (p
->need_revalidate
) {
1314 /* Shouldn't happen, but if it does just go around again. */
1315 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1316 poll_immediate_wake();
1317 } else if (p
->next_expiration
!= LLONG_MAX
) {
1318 poll_timer_wait_until(p
->next_expiration
);
1320 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1321 pvconn_wait(ofservice
->pvconn
);
1323 for (i
= 0; i
< p
->n_snoops
; i
++) {
1324 pvconn_wait(p
->snoops
[i
]);
1329 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1331 tag_set_add(&ofproto
->revalidate_set
, tag
);
1335 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1337 return &ofproto
->revalidate_set
;
1341 ofproto_is_alive(const struct ofproto
*p
)
1343 return !hmap_is_empty(&p
->controllers
);
1347 ofproto_get_ofproto_controller_info(const struct ofproto
* ofproto
,
1350 const struct ofconn
*ofconn
;
1354 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
1355 const struct rconn
*rconn
= ofconn
->rconn
;
1356 const int last_error
= rconn_get_last_error(rconn
);
1357 struct ofproto_controller_info
*cinfo
= xmalloc(sizeof *cinfo
);
1359 shash_add(info
, rconn_get_target(rconn
), cinfo
);
1361 cinfo
->is_connected
= rconn_is_connected(rconn
);
1362 cinfo
->role
= ofconn
->role
;
1367 cinfo
->pairs
.keys
[cinfo
->pairs
.n
] = "last_error";
1368 cinfo
->pairs
.values
[cinfo
->pairs
.n
++] =
1369 xstrdup(ovs_retval_to_string(last_error
));
1372 cinfo
->pairs
.keys
[cinfo
->pairs
.n
] = "state";
1373 cinfo
->pairs
.values
[cinfo
->pairs
.n
++] =
1374 xstrdup(rconn_get_state(rconn
));
1376 cinfo
->pairs
.keys
[cinfo
->pairs
.n
] = "time_in_state";
1377 cinfo
->pairs
.values
[cinfo
->pairs
.n
++] =
1378 xasprintf("%u", rconn_get_state_elapsed(rconn
));
1383 ofproto_free_ofproto_controller_info(struct shash
*info
)
1385 struct shash_node
*node
;
1387 SHASH_FOR_EACH (node
, info
) {
1388 struct ofproto_controller_info
*cinfo
= node
->data
;
1389 while (cinfo
->pairs
.n
) {
1390 free((char *) cinfo
->pairs
.values
[--cinfo
->pairs
.n
]);
1394 shash_destroy(info
);
1397 /* Deletes port number 'odp_port' from the datapath for 'ofproto'.
1399 * This is almost the same as calling dpif_port_del() directly on the
1400 * datapath, but it also makes 'ofproto' close its open netdev for the port
1401 * (if any). This makes it possible to create a new netdev of a different
1402 * type under the same name, which otherwise the netdev library would refuse
1403 * to do because of the conflict. (The netdev would eventually get closed on
1404 * the next trip through ofproto_run(), but this interface is more direct.)
1406 * Returns 0 if successful, otherwise a positive errno. */
1408 ofproto_port_del(struct ofproto
*ofproto
, uint16_t odp_port
)
1410 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1411 const char *name
= ofport
? ofport
->opp
.name
: "<unknown>";
1414 error
= dpif_port_del(ofproto
->dpif
, odp_port
);
1416 VLOG_ERR("%s: failed to remove port %"PRIu16
" (%s) interface (%s)",
1417 dpif_name(ofproto
->dpif
), odp_port
, name
, strerror(error
));
1418 } else if (ofport
) {
1419 /* 'name' is ofport->opp.name and update_port() is going to destroy
1420 * 'ofport'. Just in case update_port() refers to 'name' after it
1421 * destroys 'ofport', make a copy of it around the update_port()
1423 char *devname
= xstrdup(name
);
1424 update_port(ofproto
, devname
);
1430 /* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
1431 * true if 'odp_port' exists and should be included, false otherwise. */
1433 ofproto_port_is_floodable(struct ofproto
*ofproto
, uint16_t odp_port
)
1435 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1436 return ofport
&& !(ofport
->opp
.config
& OFPPC_NO_FLOOD
);
1440 ofproto_send_packet(struct ofproto
*p
, const struct flow
*flow
,
1441 const union ofp_action
*actions
, size_t n_actions
,
1442 const struct ofpbuf
*packet
)
1444 struct action_xlate_ctx ctx
;
1445 struct ofpbuf
*odp_actions
;
1447 action_xlate_ctx_init(&ctx
, p
, flow
, packet
);
1448 odp_actions
= xlate_actions(&ctx
, actions
, n_actions
);
1450 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1452 dpif_execute(p
->dpif
, odp_actions
->data
, odp_actions
->size
, packet
);
1454 ofpbuf_delete(odp_actions
);
1459 /* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and
1460 * performs the 'n_actions' actions in 'actions'. The new flow will not
1463 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1464 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1465 * controllers; otherwise, it will be hidden.
1467 * The caller retains ownership of 'cls_rule' and 'actions'. */
1469 ofproto_add_flow(struct ofproto
*p
, const struct cls_rule
*cls_rule
,
1470 const union ofp_action
*actions
, size_t n_actions
)
1473 rule
= rule_create(cls_rule
, actions
, n_actions
, 0, 0, 0, false);
1474 rule_insert(p
, rule
);
1478 ofproto_delete_flow(struct ofproto
*ofproto
, const struct cls_rule
*target
)
1482 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1485 rule_remove(ofproto
, rule
);
1490 ofproto_flush_flows(struct ofproto
*ofproto
)
1492 struct facet
*facet
, *next_facet
;
1493 struct rule
*rule
, *next_rule
;
1494 struct cls_cursor cursor
;
1496 COVERAGE_INC(ofproto_flush
);
1498 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
1499 /* Mark the facet as not installed so that facet_remove() doesn't
1500 * bother trying to uninstall it. There is no point in uninstalling it
1501 * individually since we are about to blow away all the facets with
1502 * dpif_flow_flush(). */
1503 facet
->installed
= false;
1504 facet_remove(ofproto
, facet
);
1507 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
1508 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1509 rule_remove(ofproto
, rule
);
1512 dpif_flow_flush(ofproto
->dpif
);
1513 if (ofproto
->in_band
) {
1514 in_band_flushed(ofproto
->in_band
);
1516 if (ofproto
->fail_open
) {
1517 fail_open_flushed(ofproto
->fail_open
);
1522 reinit_ports(struct ofproto
*p
)
1524 struct dpif_port_dump dump
;
1525 struct shash_node
*node
;
1526 struct shash devnames
;
1527 struct ofport
*ofport
;
1528 struct dpif_port dpif_port
;
1530 COVERAGE_INC(ofproto_reinit_ports
);
1532 shash_init(&devnames
);
1533 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1534 shash_add_once (&devnames
, ofport
->opp
.name
, NULL
);
1536 DPIF_PORT_FOR_EACH (&dpif_port
, &dump
, p
->dpif
) {
1537 shash_add_once (&devnames
, dpif_port
.name
, NULL
);
1540 SHASH_FOR_EACH (node
, &devnames
) {
1541 update_port(p
, node
->name
);
1543 shash_destroy(&devnames
);
1546 static struct ofport
*
1547 make_ofport(const struct dpif_port
*dpif_port
)
1549 struct netdev_options netdev_options
;
1550 enum netdev_flags flags
;
1551 struct ofport
*ofport
;
1552 struct netdev
*netdev
;
1555 memset(&netdev_options
, 0, sizeof netdev_options
);
1556 netdev_options
.name
= dpif_port
->name
;
1557 netdev_options
.type
= dpif_port
->type
;
1558 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1560 error
= netdev_open(&netdev_options
, &netdev
);
1562 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1563 "cannot be opened (%s)",
1564 dpif_port
->name
, dpif_port
->port_no
,
1565 dpif_port
->name
, strerror(error
));
1569 ofport
= xmalloc(sizeof *ofport
);
1570 ofport
->netdev
= netdev
;
1571 ofport
->odp_port
= dpif_port
->port_no
;
1572 ofport
->opp
.port_no
= odp_port_to_ofp_port(dpif_port
->port_no
);
1573 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1574 ovs_strlcpy(ofport
->opp
.name
, dpif_port
->name
, sizeof ofport
->opp
.name
);
1576 netdev_get_flags(netdev
, &flags
);
1577 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1579 ofport
->opp
.state
= netdev_get_carrier(netdev
) ? 0 : OFPPS_LINK_DOWN
;
1581 netdev_get_features(netdev
,
1582 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1583 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1588 ofport_conflicts(const struct ofproto
*p
, const struct dpif_port
*dpif_port
)
1590 if (get_port(p
, dpif_port
->port_no
)) {
1591 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1592 dpif_port
->port_no
);
1594 } else if (shash_find(&p
->port_by_name
, dpif_port
->name
)) {
1595 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1604 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1606 const struct ofp_phy_port
*a
= &a_
->opp
;
1607 const struct ofp_phy_port
*b
= &b_
->opp
;
1609 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1610 return (a
->port_no
== b
->port_no
1611 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1612 && !strcmp(a
->name
, b
->name
)
1613 && a
->state
== b
->state
1614 && a
->config
== b
->config
1615 && a
->curr
== b
->curr
1616 && a
->advertised
== b
->advertised
1617 && a
->supported
== b
->supported
1618 && a
->peer
== b
->peer
);
1622 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1625 /* XXX Should limit the number of queued port status change messages. */
1626 struct ofconn
*ofconn
;
1627 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1628 struct ofp_port_status
*ops
;
1631 /* Primary controllers, even slaves, should always get port status
1632 updates. Otherwise obey ofconn_receives_async_msgs(). */
1633 if (ofconn
->type
!= OFCONN_PRIMARY
1634 && !ofconn_receives_async_msgs(ofconn
)) {
1638 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1639 ops
->reason
= reason
;
1640 ops
->desc
= ofport
->opp
;
1641 hton_ofp_phy_port(&ops
->desc
);
1642 queue_tx(b
, ofconn
, NULL
);
1647 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1649 const char *netdev_name
= ofport
->opp
.name
;
1651 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1652 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->odp_port
, 0));
1653 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1655 ofproto_sflow_add_port(p
->sflow
, ofport
->odp_port
, netdev_name
);
1660 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1662 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1663 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1664 shash_delete(&p
->port_by_name
,
1665 shash_find(&p
->port_by_name
, ofport
->opp
.name
));
1667 ofproto_sflow_del_port(p
->sflow
, ofport
->odp_port
);
1672 ofport_free(struct ofport
*ofport
)
1675 netdev_close(ofport
->netdev
);
1680 static struct ofport
*
1681 get_port(const struct ofproto
*ofproto
, uint16_t odp_port
)
1683 struct ofport
*port
;
1685 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1686 hash_int(odp_port
, 0), &ofproto
->ports
) {
1687 if (port
->odp_port
== odp_port
) {
1695 update_port(struct ofproto
*p
, const char *devname
)
1697 struct dpif_port dpif_port
;
1698 struct ofport
*old_ofport
;
1699 struct ofport
*new_ofport
;
1702 COVERAGE_INC(ofproto_update_port
);
1704 /* Query the datapath for port information. */
1705 error
= dpif_port_query_by_name(p
->dpif
, devname
, &dpif_port
);
1707 /* Find the old ofport. */
1708 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1711 /* There's no port named 'devname' but there might be a port with
1712 * the same port number. This could happen if a port is deleted
1713 * and then a new one added in its place very quickly, or if a port
1714 * is renamed. In the former case we want to send an OFPPR_DELETE
1715 * and an OFPPR_ADD, and in the latter case we want to send a
1716 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1717 * the old port's ifindex against the new port, or perhaps less
1718 * reliably but more portably by comparing the old port's MAC
1719 * against the new port's MAC. However, this code isn't that smart
1720 * and always sends an OFPPR_MODIFY (XXX). */
1721 old_ofport
= get_port(p
, dpif_port
.port_no
);
1723 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1724 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1725 "%s", strerror(error
));
1729 /* Create a new ofport. */
1730 new_ofport
= !error
? make_ofport(&dpif_port
) : NULL
;
1732 /* Eliminate a few pathological cases. */
1733 if (!old_ofport
&& !new_ofport
) {
1735 } else if (old_ofport
&& new_ofport
) {
1736 /* Most of the 'config' bits are OpenFlow soft state, but
1737 * OFPPC_PORT_DOWN is maintained by the kernel. So transfer the
1738 * OpenFlow bits from old_ofport. (make_ofport() only sets
1739 * OFPPC_PORT_DOWN and leaves the other bits 0.) */
1740 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1742 if (ofport_equal(old_ofport
, new_ofport
)) {
1743 /* False alarm--no change. */
1744 ofport_free(new_ofport
);
1749 /* Now deal with the normal cases. */
1751 ofport_remove(p
, old_ofport
);
1754 ofport_install(p
, new_ofport
);
1756 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1757 (!old_ofport
? OFPPR_ADD
1758 : !new_ofport
? OFPPR_DELETE
1760 ofport_free(old_ofport
);
1763 dpif_port_destroy(&dpif_port
);
1767 init_ports(struct ofproto
*p
)
1769 struct dpif_port_dump dump
;
1770 struct dpif_port dpif_port
;
1772 DPIF_PORT_FOR_EACH (&dpif_port
, &dump
, p
->dpif
) {
1773 if (!ofport_conflicts(p
, &dpif_port
)) {
1774 struct ofport
*ofport
= make_ofport(&dpif_port
);
1776 ofport_install(p
, ofport
);
1784 static struct ofconn
*
1785 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1787 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1788 ofconn
->ofproto
= p
;
1789 list_push_back(&p
->all_conns
, &ofconn
->node
);
1790 ofconn
->rconn
= rconn
;
1791 ofconn
->type
= type
;
1792 ofconn
->flow_format
= NXFF_OPENFLOW10
;
1793 ofconn
->role
= NX_ROLE_OTHER
;
1794 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1795 ofconn
->pktbuf
= NULL
;
1796 ofconn
->miss_send_len
= 0;
1797 ofconn
->reply_counter
= rconn_packet_counter_create ();
1802 ofconn_destroy(struct ofconn
*ofconn
)
1804 if (ofconn
->type
== OFCONN_PRIMARY
) {
1805 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1807 discovery_destroy(ofconn
->discovery
);
1809 list_remove(&ofconn
->node
);
1810 switch_status_unregister(ofconn
->ss
);
1811 rconn_destroy(ofconn
->rconn
);
1812 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1813 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1814 pktbuf_destroy(ofconn
->pktbuf
);
1819 ofconn_run(struct ofconn
*ofconn
)
1821 struct ofproto
*p
= ofconn
->ofproto
;
1825 if (ofconn
->discovery
) {
1826 char *controller_name
;
1827 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1828 discovery_question_connectivity(ofconn
->discovery
);
1830 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1831 if (controller_name
) {
1832 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1833 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1836 rconn_disconnect(ofconn
->rconn
);
1841 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1842 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1845 rconn_run(ofconn
->rconn
);
1847 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1848 /* Limit the number of iterations to prevent other tasks from
1850 for (iteration
= 0; iteration
< 50; iteration
++) {
1851 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1856 fail_open_maybe_recover(p
->fail_open
);
1858 handle_openflow(ofconn
, of_msg
);
1859 ofpbuf_delete(of_msg
);
1863 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1864 ofconn_destroy(ofconn
);
1869 ofconn_wait(struct ofconn
*ofconn
)
1873 if (ofconn
->discovery
) {
1874 discovery_wait(ofconn
->discovery
);
1876 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1877 pinsched_wait(ofconn
->schedulers
[i
]);
1879 rconn_run_wait(ofconn
->rconn
);
1880 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1881 rconn_recv_wait(ofconn
->rconn
);
1883 COVERAGE_INC(ofproto_ofconn_stuck
);
1887 /* Returns true if 'ofconn' should receive asynchronous messages. */
1889 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1891 if (ofconn
->type
== OFCONN_PRIMARY
) {
1892 /* Primary controllers always get asynchronous messages unless they
1893 * have configured themselves as "slaves". */
1894 return ofconn
->role
!= NX_ROLE_SLAVE
;
1896 /* Service connections don't get asynchronous messages unless they have
1897 * explicitly asked for them by setting a nonzero miss send length. */
1898 return ofconn
->miss_send_len
> 0;
1902 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1903 * and 'target', suitable for use in log messages for identifying the
1906 * The name is dynamically allocated. The caller should free it (with free())
1907 * when it is no longer needed. */
1909 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1911 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1915 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1919 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1920 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1924 *s
= pinsched_create(rate
, burst
,
1925 ofconn
->ofproto
->switch_status
);
1927 pinsched_set_limits(*s
, rate
, burst
);
1930 pinsched_destroy(*s
);
1937 ofservice_reconfigure(struct ofservice
*ofservice
,
1938 const struct ofproto_controller
*c
)
1940 ofservice
->probe_interval
= c
->probe_interval
;
1941 ofservice
->rate_limit
= c
->rate_limit
;
1942 ofservice
->burst_limit
= c
->burst_limit
;
1945 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1946 * positive errno value. */
1948 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1950 struct ofservice
*ofservice
;
1951 struct pvconn
*pvconn
;
1954 error
= pvconn_open(c
->target
, &pvconn
);
1959 ofservice
= xzalloc(sizeof *ofservice
);
1960 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1961 hash_string(c
->target
, 0));
1962 ofservice
->pvconn
= pvconn
;
1964 ofservice_reconfigure(ofservice
, c
);
1970 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1972 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1973 pvconn_close(ofservice
->pvconn
);
1977 /* Finds and returns the ofservice within 'ofproto' that has the given
1978 * 'target', or a null pointer if none exists. */
1979 static struct ofservice
*
1980 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1982 struct ofservice
*ofservice
;
1984 HMAP_FOR_EACH_WITH_HASH (ofservice
, node
, hash_string(target
, 0),
1985 &ofproto
->services
) {
1986 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1993 /* Returns true if 'rule' should be hidden from the controller.
1995 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
1996 * (e.g. by in-band control) and are intentionally hidden from the
1999 rule_is_hidden(const struct rule
*rule
)
2001 return rule
->cr
.priority
> UINT16_MAX
;
2004 /* Creates and returns a new rule initialized as specified.
2006 * The caller is responsible for inserting the rule into the classifier (with
2007 * rule_insert()). */
2008 static struct rule
*
2009 rule_create(const struct cls_rule
*cls_rule
,
2010 const union ofp_action
*actions
, size_t n_actions
,
2011 uint16_t idle_timeout
, uint16_t hard_timeout
,
2012 ovs_be64 flow_cookie
, bool send_flow_removed
)
2014 struct rule
*rule
= xzalloc(sizeof *rule
);
2015 rule
->cr
= *cls_rule
;
2016 rule
->idle_timeout
= idle_timeout
;
2017 rule
->hard_timeout
= hard_timeout
;
2018 rule
->flow_cookie
= flow_cookie
;
2019 rule
->used
= rule
->created
= time_msec();
2020 rule
->send_flow_removed
= send_flow_removed
;
2021 list_init(&rule
->facets
);
2022 if (n_actions
> 0) {
2023 rule
->n_actions
= n_actions
;
2024 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
2030 static struct rule
*
2031 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
2033 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
2037 rule_free(struct rule
*rule
)
2039 free(rule
->actions
);
2043 /* Destroys 'rule' and iterates through all of its facets and revalidates them,
2044 * destroying any that no longer has a rule (which is probably all of them).
2046 * The caller must have already removed 'rule' from the classifier. */
2048 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
2050 struct facet
*facet
, *next_facet
;
2051 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
2052 facet_revalidate(ofproto
, facet
);
2057 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2058 * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't
2061 rule_has_out_port(const struct rule
*rule
, ovs_be16 out_port
)
2063 const union ofp_action
*oa
;
2064 struct actions_iterator i
;
2066 if (out_port
== htons(OFPP_NONE
)) {
2069 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
2070 oa
= actions_next(&i
)) {
2071 if (action_outputs_to_port(oa
, out_port
)) {
2078 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
2079 * 'packet', which arrived on 'in_port'.
2081 * Takes ownership of 'packet'. */
2083 execute_odp_actions(struct ofproto
*ofproto
, const struct flow
*flow
,
2084 const struct nlattr
*odp_actions
, size_t actions_len
,
2085 struct ofpbuf
*packet
)
2087 if (actions_len
== NLA_ALIGN(NLA_HDRLEN
+ sizeof(uint64_t))
2088 && odp_actions
->nla_type
== ODP_ACTION_ATTR_CONTROLLER
) {
2089 /* As an optimization, avoid a round-trip from userspace to kernel to
2090 * userspace. This also avoids possibly filling up kernel packet
2091 * buffers along the way. */
2092 struct dpif_upcall upcall
;
2094 upcall
.type
= DPIF_UC_ACTION
;
2095 upcall
.packet
= packet
;
2098 upcall
.userdata
= nl_attr_get_u64(odp_actions
);
2099 upcall
.sample_pool
= 0;
2100 upcall
.actions
= NULL
;
2101 upcall
.actions_len
= 0;
2103 send_packet_in(ofproto
, &upcall
, flow
, false);
2109 error
= dpif_execute(ofproto
->dpif
, odp_actions
, actions_len
, packet
);
2110 ofpbuf_delete(packet
);
2115 /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
2116 * statistics appropriately. 'packet' must have at least sizeof(struct
2117 * ofp_packet_in) bytes of headroom.
2119 * For correct results, 'packet' must actually be in 'facet''s flow; that is,
2120 * applying flow_extract() to 'packet' would yield the same flow as
2123 * 'facet' must have accurately composed ODP actions; that is, it must not be
2124 * in need of revalidation.
2126 * Takes ownership of 'packet'. */
2128 facet_execute(struct ofproto
*ofproto
, struct facet
*facet
,
2129 struct ofpbuf
*packet
)
2131 struct dpif_flow_stats stats
;
2133 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2135 flow_extract_stats(&facet
->flow
, packet
, &stats
);
2136 if (execute_odp_actions(ofproto
, &facet
->flow
,
2137 facet
->actions
, facet
->actions_len
, packet
)) {
2138 facet_update_stats(ofproto
, facet
, &stats
);
2139 facet
->used
= time_msec();
2140 netflow_flow_update_time(ofproto
->netflow
,
2141 &facet
->nf_flow
, facet
->used
);
2145 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
2146 * statistics (or the statistics for one of its facets) appropriately.
2147 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
2149 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
2150 * with statistics for 'packet' either way.
2152 * Takes ownership of 'packet'. */
2154 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
, uint16_t in_port
,
2155 struct ofpbuf
*packet
)
2157 struct action_xlate_ctx ctx
;
2158 struct ofpbuf
*odp_actions
;
2159 struct facet
*facet
;
2163 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2165 flow_extract(packet
, 0, in_port
, &flow
);
2167 /* First look for a related facet. If we find one, account it to that. */
2168 facet
= facet_lookup_valid(ofproto
, &flow
);
2169 if (facet
&& facet
->rule
== rule
) {
2170 facet_execute(ofproto
, facet
, packet
);
2174 /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
2175 * create a new facet for it and use that. */
2176 if (rule_lookup(ofproto
, &flow
) == rule
) {
2177 facet
= facet_create(ofproto
, rule
, &flow
, packet
);
2178 facet_execute(ofproto
, facet
, packet
);
2179 facet_install(ofproto
, facet
, true);
2183 /* We can't account anything to a facet. If we were to try, then that
2184 * facet would have a non-matching rule, busting our invariants. */
2185 action_xlate_ctx_init(&ctx
, ofproto
, &flow
, packet
);
2186 odp_actions
= xlate_actions(&ctx
, rule
->actions
, rule
->n_actions
);
2187 size
= packet
->size
;
2188 if (execute_odp_actions(ofproto
, &flow
, odp_actions
->data
,
2189 odp_actions
->size
, packet
)) {
2190 rule
->used
= time_msec();
2191 rule
->packet_count
++;
2192 rule
->byte_count
+= size
;
2194 ofpbuf_delete(odp_actions
);
2197 /* Inserts 'rule' into 'p''s flow table. */
2199 rule_insert(struct ofproto
*p
, struct rule
*rule
)
2201 struct rule
*displaced_rule
;
2203 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
2204 if (displaced_rule
) {
2205 rule_destroy(p
, displaced_rule
);
2207 p
->need_revalidate
= true;
2210 /* Creates and returns a new facet within 'ofproto' owned by 'rule', given a
2211 * 'flow' and an example 'packet' within that flow.
2213 * The caller must already have determined that no facet with an identical
2214 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
2215 * 'ofproto''s classifier table. */
2216 static struct facet
*
2217 facet_create(struct ofproto
*ofproto
, struct rule
*rule
,
2218 const struct flow
*flow
, const struct ofpbuf
*packet
)
2220 struct facet
*facet
;
2222 facet
= xzalloc(sizeof *facet
);
2223 facet
->used
= time_msec();
2224 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, flow_hash(flow
, 0));
2225 list_push_back(&rule
->facets
, &facet
->list_node
);
2227 facet
->flow
= *flow
;
2228 netflow_flow_init(&facet
->nf_flow
);
2229 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
2231 facet_make_actions(ofproto
, facet
, packet
);
2237 facet_free(struct facet
*facet
)
2239 free(facet
->actions
);
2243 /* Remove 'rule' from 'ofproto' and free up the associated memory:
2245 * - Removes 'rule' from the classifier.
2247 * - If 'rule' has facets, revalidates them (and possibly uninstalls and
2248 * destroys them), via rule_destroy().
2251 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2253 COVERAGE_INC(ofproto_del_rule
);
2254 ofproto
->need_revalidate
= true;
2255 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2256 rule_destroy(ofproto
, rule
);
2259 /* Remove 'facet' from 'ofproto' and free up the associated memory:
2261 * - If 'facet' was installed in the datapath, uninstalls it and updates its
2262 * rule's statistics, via facet_uninstall().
2264 * - Removes 'facet' from its rule and from ofproto->facets.
2267 facet_remove(struct ofproto
*ofproto
, struct facet
*facet
)
2269 facet_uninstall(ofproto
, facet
);
2270 facet_flush_stats(ofproto
, facet
);
2271 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
2272 list_remove(&facet
->list_node
);
2276 /* Composes the ODP actions for 'facet' based on its rule's actions. */
2278 facet_make_actions(struct ofproto
*p
, struct facet
*facet
,
2279 const struct ofpbuf
*packet
)
2281 const struct rule
*rule
= facet
->rule
;
2282 struct ofpbuf
*odp_actions
;
2283 struct action_xlate_ctx ctx
;
2285 action_xlate_ctx_init(&ctx
, p
, &facet
->flow
, packet
);
2286 odp_actions
= xlate_actions(&ctx
, rule
->actions
, rule
->n_actions
);
2287 facet
->tags
= ctx
.tags
;
2288 facet
->may_install
= ctx
.may_set_up_flow
;
2289 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
2291 if (facet
->actions_len
!= odp_actions
->size
2292 || memcmp(facet
->actions
, odp_actions
->data
, odp_actions
->size
)) {
2293 free(facet
->actions
);
2294 facet
->actions_len
= odp_actions
->size
;
2295 facet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
2298 ofpbuf_delete(odp_actions
);
2302 facet_put__(struct ofproto
*ofproto
, struct facet
*facet
,
2303 const struct nlattr
*actions
, size_t actions_len
,
2304 struct dpif_flow_stats
*stats
)
2306 uint32_t keybuf
[ODPUTIL_FLOW_KEY_U32S
];
2307 enum dpif_flow_put_flags flags
;
2310 flags
= DPIF_FP_CREATE
| DPIF_FP_MODIFY
;
2312 flags
|= DPIF_FP_ZERO_STATS
;
2315 ofpbuf_use_stack(&key
, keybuf
, sizeof keybuf
);
2316 odp_flow_key_from_flow(&key
, &facet
->flow
);
2317 assert(key
.base
== keybuf
);
2319 return dpif_flow_put(ofproto
->dpif
, flags
, key
.data
, key
.size
,
2320 actions
, actions_len
, stats
);
2323 /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
2324 * 'zero_stats' is true, clears any existing statistics from the datapath for
2327 facet_install(struct ofproto
*p
, struct facet
*facet
, bool zero_stats
)
2329 struct dpif_flow_stats stats
;
2331 if (facet
->may_install
2332 && !facet_put__(p
, facet
, facet
->actions
, facet
->actions_len
,
2333 zero_stats
? &stats
: NULL
)) {
2334 facet
->installed
= true;
2338 /* Ensures that the bytes in 'facet', plus 'extra_bytes', have been passed up
2339 * to the accounting hook function in the ofhooks structure. */
2341 facet_account(struct ofproto
*ofproto
,
2342 struct facet
*facet
, uint64_t extra_bytes
)
2344 uint64_t total_bytes
= facet
->byte_count
+ extra_bytes
;
2346 if (ofproto
->ofhooks
->account_flow_cb
2347 && total_bytes
> facet
->accounted_bytes
)
2349 ofproto
->ofhooks
->account_flow_cb(
2350 &facet
->flow
, facet
->tags
, facet
->actions
, facet
->actions_len
,
2351 total_bytes
- facet
->accounted_bytes
, ofproto
->aux
);
2352 facet
->accounted_bytes
= total_bytes
;
2356 /* If 'rule' is installed in the datapath, uninstalls it. */
2358 facet_uninstall(struct ofproto
*p
, struct facet
*facet
)
2360 if (facet
->installed
) {
2361 uint32_t keybuf
[ODPUTIL_FLOW_KEY_U32S
];
2362 struct dpif_flow_stats stats
;
2365 ofpbuf_use_stack(&key
, keybuf
, sizeof keybuf
);
2366 odp_flow_key_from_flow(&key
, &facet
->flow
);
2367 assert(key
.base
== keybuf
);
2369 if (!dpif_flow_del(p
->dpif
, key
.data
, key
.size
, &stats
)) {
2370 facet_update_stats(p
, facet
, &stats
);
2372 facet
->installed
= false;
2376 /* Returns true if the only action for 'facet' is to send to the controller.
2377 * (We don't report NetFlow expiration messages for such facets because they
2378 * are just part of the control logic for the network, not real traffic). */
2380 facet_is_controller_flow(struct facet
*facet
)
2383 && facet
->rule
->n_actions
== 1
2384 && action_outputs_to_port(&facet
->rule
->actions
[0],
2385 htons(OFPP_CONTROLLER
)));
2388 /* Folds all of 'facet''s statistics into its rule. Also updates the
2389 * accounting ofhook and emits a NetFlow expiration if appropriate. */
2391 facet_flush_stats(struct ofproto
*ofproto
, struct facet
*facet
)
2393 facet_account(ofproto
, facet
, 0);
2395 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
2396 struct ofexpired expired
;
2397 expired
.flow
= facet
->flow
;
2398 expired
.packet_count
= facet
->packet_count
;
2399 expired
.byte_count
= facet
->byte_count
;
2400 expired
.used
= facet
->used
;
2401 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
2404 facet
->rule
->packet_count
+= facet
->packet_count
;
2405 facet
->rule
->byte_count
+= facet
->byte_count
;
2407 /* Reset counters to prevent double counting if 'facet' ever gets
2409 facet
->packet_count
= 0;
2410 facet
->byte_count
= 0;
2411 facet
->accounted_bytes
= 0;
2413 netflow_flow_clear(&facet
->nf_flow
);
2416 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2417 * Returns it if found, otherwise a null pointer.
2419 * The returned facet might need revalidation; use facet_lookup_valid()
2420 * instead if that is important. */
2421 static struct facet
*
2422 facet_find(struct ofproto
*ofproto
, const struct flow
*flow
)
2424 struct facet
*facet
;
2426 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, flow_hash(flow
, 0),
2428 if (flow_equal(flow
, &facet
->flow
)) {
2436 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2437 * Returns it if found, otherwise a null pointer.
2439 * The returned facet is guaranteed to be valid. */
2440 static struct facet
*
2441 facet_lookup_valid(struct ofproto
*ofproto
, const struct flow
*flow
)
2443 struct facet
*facet
= facet_find(ofproto
, flow
);
2445 /* The facet we found might not be valid, since we could be in need of
2446 * revalidation. If it is not valid, don't return it. */
2448 && ofproto
->need_revalidate
2449 && !facet_revalidate(ofproto
, facet
)) {
2450 COVERAGE_INC(ofproto_invalidated
);
2457 /* Re-searches 'ofproto''s classifier for a rule matching 'facet':
2459 * - If the rule found is different from 'facet''s current rule, moves
2460 * 'facet' to the new rule and recompiles its actions.
2462 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
2463 * where it is and recompiles its actions anyway.
2465 * - If there is none, destroys 'facet'.
2467 * Returns true if 'facet' still exists, false if it has been destroyed. */
2469 facet_revalidate(struct ofproto
*ofproto
, struct facet
*facet
)
2471 struct action_xlate_ctx ctx
;
2472 struct ofpbuf
*odp_actions
;
2473 struct rule
*new_rule
;
2474 bool actions_changed
;
2476 COVERAGE_INC(facet_revalidate
);
2478 /* Determine the new rule. */
2479 new_rule
= rule_lookup(ofproto
, &facet
->flow
);
2481 /* No new rule, so delete the facet. */
2482 facet_remove(ofproto
, facet
);
2486 /* Calculate new ODP actions.
2488 * We do not modify any 'facet' state yet, because we might need to, e.g.,
2489 * emit a NetFlow expiration and, if so, we need to have the old state
2490 * around to properly compose it. */
2491 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
, NULL
);
2492 odp_actions
= xlate_actions(&ctx
, new_rule
->actions
, new_rule
->n_actions
);
2493 actions_changed
= (facet
->actions_len
!= odp_actions
->size
2494 || memcmp(facet
->actions
, odp_actions
->data
,
2495 facet
->actions_len
));
2497 /* If the ODP actions changed or the installability changed, then we need
2498 * to talk to the datapath. */
2499 if (actions_changed
|| ctx
.may_set_up_flow
!= facet
->installed
) {
2500 if (ctx
.may_set_up_flow
) {
2501 struct dpif_flow_stats stats
;
2503 facet_put__(ofproto
, facet
,
2504 odp_actions
->data
, odp_actions
->size
, &stats
);
2505 facet_update_stats(ofproto
, facet
, &stats
);
2507 facet_uninstall(ofproto
, facet
);
2510 /* The datapath flow is gone or has zeroed stats, so push stats out of
2511 * 'facet' into 'rule'. */
2512 facet_flush_stats(ofproto
, facet
);
2515 /* Update 'facet' now that we've taken care of all the old state. */
2516 facet
->tags
= ctx
.tags
;
2517 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
2518 facet
->may_install
= ctx
.may_set_up_flow
;
2519 if (actions_changed
) {
2520 free(facet
->actions
);
2521 facet
->actions_len
= odp_actions
->size
;
2522 facet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
2524 if (facet
->rule
!= new_rule
) {
2525 COVERAGE_INC(facet_changed_rule
);
2526 list_remove(&facet
->list_node
);
2527 list_push_back(&new_rule
->facets
, &facet
->list_node
);
2528 facet
->rule
= new_rule
;
2529 facet
->used
= new_rule
->created
;
2532 ofpbuf_delete(odp_actions
);
2538 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2539 struct rconn_packet_counter
*counter
)
2541 update_openflow_length(msg
);
2542 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2548 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2551 struct ofpbuf
*buf
= ofputil_encode_error_msg(error
, oh
);
2553 COVERAGE_INC(ofproto_error
);
2554 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2559 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2561 opp
->port_no
= htons(opp
->port_no
);
2562 opp
->config
= htonl(opp
->config
);
2563 opp
->state
= htonl(opp
->state
);
2564 opp
->curr
= htonl(opp
->curr
);
2565 opp
->advertised
= htonl(opp
->advertised
);
2566 opp
->supported
= htonl(opp
->supported
);
2567 opp
->peer
= htonl(opp
->peer
);
2571 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2573 queue_tx(make_echo_reply(oh
), ofconn
, ofconn
->reply_counter
);
2578 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2580 struct ofp_switch_features
*osf
;
2582 struct ofport
*port
;
2584 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2585 osf
->datapath_id
= htonll(ofconn
->ofproto
->datapath_id
);
2586 osf
->n_buffers
= htonl(pktbuf_capacity());
2588 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2589 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2590 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2591 (1u << OFPAT_SET_VLAN_VID
) |
2592 (1u << OFPAT_SET_VLAN_PCP
) |
2593 (1u << OFPAT_STRIP_VLAN
) |
2594 (1u << OFPAT_SET_DL_SRC
) |
2595 (1u << OFPAT_SET_DL_DST
) |
2596 (1u << OFPAT_SET_NW_SRC
) |
2597 (1u << OFPAT_SET_NW_DST
) |
2598 (1u << OFPAT_SET_NW_TOS
) |
2599 (1u << OFPAT_SET_TP_SRC
) |
2600 (1u << OFPAT_SET_TP_DST
) |
2601 (1u << OFPAT_ENQUEUE
));
2603 HMAP_FOR_EACH (port
, hmap_node
, &ofconn
->ofproto
->ports
) {
2604 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2607 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2612 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2615 struct ofp_switch_config
*osc
;
2619 /* Figure out flags. */
2620 dpif_get_drop_frags(ofconn
->ofproto
->dpif
, &drop_frags
);
2621 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2624 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2625 osc
->flags
= htons(flags
);
2626 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2627 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2633 handle_set_config(struct ofconn
*ofconn
, const struct ofp_switch_config
*osc
)
2635 uint16_t flags
= ntohs(osc
->flags
);
2637 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2638 switch (flags
& OFPC_FRAG_MASK
) {
2639 case OFPC_FRAG_NORMAL
:
2640 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, false);
2642 case OFPC_FRAG_DROP
:
2643 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, true);
2646 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2652 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2657 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2658 * flow translation. */
2659 #define MAX_RESUBMIT_RECURSION 16
2661 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2662 struct action_xlate_ctx
*ctx
);
2665 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2667 const struct ofport
*ofport
= get_port(ctx
->ofproto
, port
);
2670 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2671 /* Forwarding disabled on port. */
2676 * We don't have an ofport record for this port, but it doesn't hurt to
2677 * allow forwarding to it anyhow. Maybe such a port will appear later
2678 * and we're pre-populating the flow table.
2682 nl_msg_put_u32(ctx
->odp_actions
, ODP_ACTION_ATTR_OUTPUT
, port
);
2683 ctx
->nf_output_iface
= port
;
2686 static struct rule
*
2687 rule_lookup(struct ofproto
*ofproto
, const struct flow
*flow
)
2689 return rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2693 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2695 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2696 uint16_t old_in_port
;
2699 /* Look up a flow with 'in_port' as the input port. Then restore the
2700 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2701 * have surprising behavior). */
2702 old_in_port
= ctx
->flow
.in_port
;
2703 ctx
->flow
.in_port
= in_port
;
2704 rule
= rule_lookup(ctx
->ofproto
, &ctx
->flow
);
2705 ctx
->flow
.in_port
= old_in_port
;
2707 if (ctx
->resubmit_hook
) {
2708 ctx
->resubmit_hook(ctx
, rule
);
2713 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2717 static struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2719 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2720 MAX_RESUBMIT_RECURSION
);
2725 flood_packets(struct ofproto
*ofproto
, uint16_t odp_in_port
, uint32_t mask
,
2726 uint16_t *nf_output_iface
, struct ofpbuf
*odp_actions
)
2728 struct ofport
*ofport
;
2730 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
2731 uint16_t odp_port
= ofport
->odp_port
;
2732 if (odp_port
!= odp_in_port
&& !(ofport
->opp
.config
& mask
)) {
2733 nl_msg_put_u32(odp_actions
, ODP_ACTION_ATTR_OUTPUT
, odp_port
);
2736 *nf_output_iface
= NF_OUT_FLOOD
;
2740 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2741 uint16_t port
, uint16_t max_len
)
2744 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2746 ctx
->nf_output_iface
= NF_OUT_DROP
;
2750 add_output_action(ctx
, ctx
->flow
.in_port
);
2753 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2756 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2757 ctx
->odp_actions
, &ctx
->tags
,
2758 &ctx
->nf_output_iface
,
2759 ctx
->ofproto
->aux
)) {
2760 COVERAGE_INC(ofproto_uninstallable
);
2761 ctx
->may_set_up_flow
= false;
2765 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, OFPPC_NO_FLOOD
,
2766 &ctx
->nf_output_iface
, ctx
->odp_actions
);
2769 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, 0,
2770 &ctx
->nf_output_iface
, ctx
->odp_actions
);
2772 case OFPP_CONTROLLER
:
2773 nl_msg_put_u64(ctx
->odp_actions
, ODP_ACTION_ATTR_CONTROLLER
, max_len
);
2776 add_output_action(ctx
, ODPP_LOCAL
);
2779 odp_port
= ofp_port_to_odp_port(port
);
2780 if (odp_port
!= ctx
->flow
.in_port
) {
2781 add_output_action(ctx
, odp_port
);
2786 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2787 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2788 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2789 ctx
->nf_output_iface
= prev_nf_output_iface
;
2790 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2791 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2792 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2797 xlate_output_action(struct action_xlate_ctx
*ctx
,
2798 const struct ofp_action_output
*oao
)
2800 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2803 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2804 * optimization, because we're going to add another action that sets the
2805 * priority immediately after, or because there are no actions following the
2808 remove_pop_action(struct action_xlate_ctx
*ctx
)
2810 if (ctx
->odp_actions
->size
== ctx
->last_pop_priority
) {
2811 ctx
->odp_actions
->size
-= NLA_ALIGN(NLA_HDRLEN
);
2812 ctx
->last_pop_priority
= -1;
2817 add_pop_action(struct action_xlate_ctx
*ctx
)
2819 if (ctx
->odp_actions
->size
!= ctx
->last_pop_priority
) {
2820 nl_msg_put_flag(ctx
->odp_actions
, ODP_ACTION_ATTR_POP_PRIORITY
);
2821 ctx
->last_pop_priority
= ctx
->odp_actions
->size
;
2826 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2827 const struct ofp_action_enqueue
*oae
)
2829 uint16_t ofp_port
, odp_port
;
2833 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2836 /* Fall back to ordinary output action. */
2837 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2841 /* Figure out ODP output port. */
2842 ofp_port
= ntohs(oae
->port
);
2843 if (ofp_port
!= OFPP_IN_PORT
) {
2844 odp_port
= ofp_port_to_odp_port(ofp_port
);
2846 odp_port
= ctx
->flow
.in_port
;
2849 /* Add ODP actions. */
2850 remove_pop_action(ctx
);
2851 nl_msg_put_u32(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_PRIORITY
, priority
);
2852 add_output_action(ctx
, odp_port
);
2853 add_pop_action(ctx
);
2855 /* Update NetFlow output port. */
2856 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2857 ctx
->nf_output_iface
= odp_port
;
2858 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2859 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2864 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
2865 const struct nx_action_set_queue
*nasq
)
2870 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
2873 /* Couldn't translate queue to a priority, so ignore. A warning
2874 * has already been logged. */
2878 remove_pop_action(ctx
);
2879 nl_msg_put_u32(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_PRIORITY
, priority
);
2883 xlate_set_dl_tci(struct action_xlate_ctx
*ctx
)
2885 ovs_be16 tci
= ctx
->flow
.vlan_tci
;
2886 if (!(tci
& htons(VLAN_CFI
))) {
2887 nl_msg_put_flag(ctx
->odp_actions
, ODP_ACTION_ATTR_STRIP_VLAN
);
2889 nl_msg_put_be16(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_DL_TCI
,
2890 tci
& ~htons(VLAN_CFI
));
2894 struct xlate_reg_state
{
2900 save_reg_state(const struct action_xlate_ctx
*ctx
,
2901 struct xlate_reg_state
*state
)
2903 state
->vlan_tci
= ctx
->flow
.vlan_tci
;
2904 state
->tun_id
= ctx
->flow
.tun_id
;
2908 update_reg_state(struct action_xlate_ctx
*ctx
,
2909 const struct xlate_reg_state
*state
)
2911 if (ctx
->flow
.vlan_tci
!= state
->vlan_tci
) {
2912 xlate_set_dl_tci(ctx
);
2914 if (ctx
->flow
.tun_id
!= state
->tun_id
) {
2915 nl_msg_put_be64(ctx
->odp_actions
,
2916 ODP_ACTION_ATTR_SET_TUNNEL
, ctx
->flow
.tun_id
);
2921 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2922 const struct nx_action_header
*nah
)
2924 const struct nx_action_resubmit
*nar
;
2925 const struct nx_action_set_tunnel
*nast
;
2926 const struct nx_action_set_queue
*nasq
;
2927 const struct nx_action_multipath
*nam
;
2928 enum nx_action_subtype subtype
= ntohs(nah
->subtype
);
2929 struct xlate_reg_state state
;
2932 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2934 case NXAST_RESUBMIT
:
2935 nar
= (const struct nx_action_resubmit
*) nah
;
2936 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2939 case NXAST_SET_TUNNEL
:
2940 nast
= (const struct nx_action_set_tunnel
*) nah
;
2941 tun_id
= htonll(ntohl(nast
->tun_id
));
2942 nl_msg_put_be64(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_TUNNEL
, tun_id
);
2943 ctx
->flow
.tun_id
= tun_id
;
2946 case NXAST_DROP_SPOOFED_ARP
:
2947 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_ARP
)) {
2948 nl_msg_put_flag(ctx
->odp_actions
,
2949 ODP_ACTION_ATTR_DROP_SPOOFED_ARP
);
2953 case NXAST_SET_QUEUE
:
2954 nasq
= (const struct nx_action_set_queue
*) nah
;
2955 xlate_set_queue_action(ctx
, nasq
);
2958 case NXAST_POP_QUEUE
:
2959 add_pop_action(ctx
);
2962 case NXAST_REG_MOVE
:
2963 save_reg_state(ctx
, &state
);
2964 nxm_execute_reg_move((const struct nx_action_reg_move
*) nah
,
2966 update_reg_state(ctx
, &state
);
2969 case NXAST_REG_LOAD
:
2970 save_reg_state(ctx
, &state
);
2971 nxm_execute_reg_load((const struct nx_action_reg_load
*) nah
,
2973 update_reg_state(ctx
, &state
);
2977 /* Nothing to do. */
2980 case NXAST_SET_TUNNEL64
:
2981 tun_id
= ((const struct nx_action_set_tunnel64
*) nah
)->tun_id
;
2982 nl_msg_put_be64(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_TUNNEL
, tun_id
);
2983 ctx
->flow
.tun_id
= tun_id
;
2986 case NXAST_MULTIPATH
:
2987 nam
= (const struct nx_action_multipath
*) nah
;
2988 multipath_execute(nam
, &ctx
->flow
);
2991 /* If you add a new action here that modifies flow data, don't forget to
2992 * update the flow key in ctx->flow at the same time. */
2994 case NXAST_SNAT__OBSOLETE
:
2996 VLOG_DBG_RL(&rl
, "unknown Nicira action type %d", (int) subtype
);
3002 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
3003 struct action_xlate_ctx
*ctx
)
3005 struct actions_iterator iter
;
3006 const union ofp_action
*ia
;
3007 const struct ofport
*port
;
3009 port
= get_port(ctx
->ofproto
, ctx
->flow
.in_port
);
3010 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
3011 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
3012 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
3013 /* Drop this flow. */
3017 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
3018 enum ofp_action_type type
= ntohs(ia
->type
);
3019 const struct ofp_action_dl_addr
*oada
;
3023 xlate_output_action(ctx
, &ia
->output
);
3026 case OFPAT_SET_VLAN_VID
:
3027 ctx
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
3028 ctx
->flow
.vlan_tci
|= ia
->vlan_vid
.vlan_vid
| htons(VLAN_CFI
);
3029 xlate_set_dl_tci(ctx
);
3032 case OFPAT_SET_VLAN_PCP
:
3033 ctx
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
3034 ctx
->flow
.vlan_tci
|= htons(
3035 (ia
->vlan_pcp
.vlan_pcp
<< VLAN_PCP_SHIFT
) | VLAN_CFI
);
3036 xlate_set_dl_tci(ctx
);
3039 case OFPAT_STRIP_VLAN
:
3040 ctx
->flow
.vlan_tci
= htons(0);
3041 xlate_set_dl_tci(ctx
);
3044 case OFPAT_SET_DL_SRC
:
3045 oada
= ((struct ofp_action_dl_addr
*) ia
);
3046 nl_msg_put_unspec(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_DL_SRC
,
3047 oada
->dl_addr
, ETH_ADDR_LEN
);
3048 memcpy(ctx
->flow
.dl_src
, oada
->dl_addr
, ETH_ADDR_LEN
);
3051 case OFPAT_SET_DL_DST
:
3052 oada
= ((struct ofp_action_dl_addr
*) ia
);
3053 nl_msg_put_unspec(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_DL_DST
,
3054 oada
->dl_addr
, ETH_ADDR_LEN
);
3055 memcpy(ctx
->flow
.dl_dst
, oada
->dl_addr
, ETH_ADDR_LEN
);
3058 case OFPAT_SET_NW_SRC
:
3059 nl_msg_put_be32(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_NW_SRC
,
3060 ia
->nw_addr
.nw_addr
);
3061 ctx
->flow
.nw_src
= ia
->nw_addr
.nw_addr
;
3064 case OFPAT_SET_NW_DST
:
3065 nl_msg_put_be32(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_NW_DST
,
3066 ia
->nw_addr
.nw_addr
);
3067 ctx
->flow
.nw_dst
= ia
->nw_addr
.nw_addr
;
3070 case OFPAT_SET_NW_TOS
:
3071 nl_msg_put_u8(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_NW_TOS
,
3073 ctx
->flow
.nw_tos
= ia
->nw_tos
.nw_tos
;
3076 case OFPAT_SET_TP_SRC
:
3077 nl_msg_put_be16(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_TP_SRC
,
3078 ia
->tp_port
.tp_port
);
3079 ctx
->flow
.tp_src
= ia
->tp_port
.tp_port
;
3082 case OFPAT_SET_TP_DST
:
3083 nl_msg_put_be16(ctx
->odp_actions
, ODP_ACTION_ATTR_SET_TP_DST
,
3084 ia
->tp_port
.tp_port
);
3085 ctx
->flow
.tp_dst
= ia
->tp_port
.tp_port
;
3089 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
3093 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
3097 VLOG_DBG_RL(&rl
, "unknown action type %d", (int) type
);
3104 action_xlate_ctx_init(struct action_xlate_ctx
*ctx
,
3105 struct ofproto
*ofproto
, const struct flow
*flow
,
3106 const struct ofpbuf
*packet
)
3108 ctx
->ofproto
= ofproto
;
3110 ctx
->packet
= packet
;
3111 ctx
->resubmit_hook
= NULL
;
3114 static struct ofpbuf
*
3115 xlate_actions(struct action_xlate_ctx
*ctx
,
3116 const union ofp_action
*in
, size_t n_in
)
3118 COVERAGE_INC(ofproto_ofp2odp
);
3120 ctx
->odp_actions
= ofpbuf_new(512);
3122 ctx
->may_set_up_flow
= true;
3123 ctx
->nf_output_iface
= NF_OUT_DROP
;
3125 ctx
->last_pop_priority
= -1;
3126 do_xlate_actions(in
, n_in
, ctx
);
3127 remove_pop_action(ctx
);
3129 /* Check with in-band control to see if we're allowed to set up this
3131 if (!in_band_rule_check(ctx
->ofproto
->in_band
, &ctx
->flow
,
3132 ctx
->odp_actions
->data
, ctx
->odp_actions
->size
)) {
3133 ctx
->may_set_up_flow
= false;
3136 return ctx
->odp_actions
;
3139 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3140 * error message code (composed with ofp_mkerr()) for the caller to propagate
3141 * upward. Otherwise, returns 0.
3143 * The log message mentions 'msg_type'. */
3145 reject_slave_controller(struct ofconn
*ofconn
, const const char *msg_type
)
3147 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
3148 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3149 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
3152 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3159 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3161 struct ofproto
*p
= ofconn
->ofproto
;
3162 struct ofp_packet_out
*opo
;
3163 struct ofpbuf payload
, *buffer
;
3164 union ofp_action
*ofp_actions
;
3165 struct action_xlate_ctx ctx
;
3166 struct ofpbuf
*odp_actions
;
3167 struct ofpbuf request
;
3169 size_t n_ofp_actions
;
3173 COVERAGE_INC(ofproto_packet_out
);
3175 error
= reject_slave_controller(ofconn
, "OFPT_PACKET_OUT");
3180 /* Get ofp_packet_out. */
3181 ofpbuf_use_const(&request
, oh
, ntohs(oh
->length
));
3182 opo
= ofpbuf_pull(&request
, offsetof(struct ofp_packet_out
, actions
));
3185 error
= ofputil_pull_actions(&request
, ntohs(opo
->actions_len
),
3186 &ofp_actions
, &n_ofp_actions
);
3192 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
3193 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
3195 if (error
|| !buffer
) {
3204 /* Extract flow, check actions. */
3205 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)),
3207 error
= validate_actions(ofp_actions
, n_ofp_actions
, &flow
, p
->max_ports
);
3213 action_xlate_ctx_init(&ctx
, p
, &flow
, &payload
);
3214 odp_actions
= xlate_actions(&ctx
, ofp_actions
, n_ofp_actions
);
3215 dpif_execute(p
->dpif
, odp_actions
->data
, odp_actions
->size
, &payload
);
3216 ofpbuf_delete(odp_actions
);
3219 ofpbuf_delete(buffer
);
3224 update_port_config(struct ofproto
*p
, struct ofport
*port
,
3225 uint32_t config
, uint32_t mask
)
3227 mask
&= config
^ port
->opp
.config
;
3228 if (mask
& OFPPC_PORT_DOWN
) {
3229 if (config
& OFPPC_PORT_DOWN
) {
3230 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
3232 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
3235 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
3236 OFPPC_NO_FWD | OFPPC_NO_FLOOD)
3237 if (mask
& REVALIDATE_BITS
) {
3238 COVERAGE_INC(ofproto_costly_flags
);
3239 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
3240 p
->need_revalidate
= true;
3242 #undef REVALIDATE_BITS
3243 if (mask
& OFPPC_NO_PACKET_IN
) {
3244 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
3249 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3251 struct ofproto
*p
= ofconn
->ofproto
;
3252 const struct ofp_port_mod
*opm
= (const struct ofp_port_mod
*) oh
;
3253 struct ofport
*port
;
3256 error
= reject_slave_controller(ofconn
, "OFPT_PORT_MOD");
3261 port
= get_port(p
, ofp_port_to_odp_port(ntohs(opm
->port_no
)));
3263 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
3264 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
3265 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
3267 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
3268 if (opm
->advertise
) {
3269 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
3275 static struct ofpbuf
*
3276 make_ofp_stats_reply(ovs_be32 xid
, ovs_be16 type
, size_t body_len
)
3278 struct ofp_stats_reply
*osr
;
3281 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
3282 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
3284 osr
->flags
= htons(0);
3288 static struct ofpbuf
*
3289 start_ofp_stats_reply(const struct ofp_header
*request
, size_t body_len
)
3291 const struct ofp_stats_request
*osr
3292 = (const struct ofp_stats_request
*) request
;
3293 return make_ofp_stats_reply(osr
->header
.xid
, osr
->type
, body_len
);
3297 append_ofp_stats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3298 struct ofpbuf
**msgp
)
3300 struct ofpbuf
*msg
= *msgp
;
3301 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
3302 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3303 struct ofp_stats_reply
*reply
= msg
->data
;
3304 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3305 *msgp
= make_ofp_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
3306 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3308 return ofpbuf_put_uninit(*msgp
, nbytes
);
3311 static struct ofpbuf
*
3312 make_nxstats_reply(ovs_be32 xid
, ovs_be32 subtype
, size_t body_len
)
3314 struct nicira_stats_msg
*nsm
;
3317 msg
= ofpbuf_new(MIN(sizeof *nsm
+ body_len
, UINT16_MAX
));
3318 nsm
= put_openflow_xid(sizeof *nsm
, OFPT_STATS_REPLY
, xid
, msg
);
3319 nsm
->type
= htons(OFPST_VENDOR
);
3320 nsm
->flags
= htons(0);
3321 nsm
->vendor
= htonl(NX_VENDOR_ID
);
3322 nsm
->subtype
= subtype
;
3326 static struct ofpbuf
*
3327 start_nxstats_reply(const struct nicira_stats_msg
*request
, size_t body_len
)
3329 return make_nxstats_reply(request
->header
.xid
, request
->subtype
, body_len
);
3333 append_nxstats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3334 struct ofpbuf
**msgp
)
3336 struct ofpbuf
*msg
= *msgp
;
3337 assert(nbytes
<= UINT16_MAX
- sizeof(struct nicira_stats_msg
));
3338 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3339 struct nicira_stats_msg
*reply
= msg
->data
;
3340 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3341 *msgp
= make_nxstats_reply(reply
->header
.xid
, reply
->subtype
, nbytes
);
3342 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3344 ofpbuf_prealloc_tailroom(*msgp
, nbytes
);
3348 handle_desc_stats_request(struct ofconn
*ofconn
,
3349 const struct ofp_header
*request
)
3351 struct ofproto
*p
= ofconn
->ofproto
;
3352 struct ofp_desc_stats
*ods
;
3355 msg
= start_ofp_stats_reply(request
, sizeof *ods
);
3356 ods
= append_ofp_stats_reply(sizeof *ods
, ofconn
, &msg
);
3357 memset(ods
, 0, sizeof *ods
);
3358 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
3359 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
3360 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
3361 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
3362 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
3363 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3369 handle_table_stats_request(struct ofconn
*ofconn
,
3370 const struct ofp_header
*request
)
3372 struct ofproto
*p
= ofconn
->ofproto
;
3373 struct ofp_table_stats
*ots
;
3376 msg
= start_ofp_stats_reply(request
, sizeof *ots
* 2);
3378 /* Classifier table. */
3379 ots
= append_ofp_stats_reply(sizeof *ots
, ofconn
, &msg
);
3380 memset(ots
, 0, sizeof *ots
);
3381 strcpy(ots
->name
, "classifier");
3382 ots
->wildcards
= (ofconn
->flow_format
== NXFF_OPENFLOW10
3383 ? htonl(OFPFW_ALL
) : htonl(OVSFW_ALL
));
3384 ots
->max_entries
= htonl(1024 * 1024); /* An arbitrary big number. */
3385 ots
->active_count
= htonl(classifier_count(&p
->cls
));
3386 ots
->lookup_count
= htonll(0); /* XXX */
3387 ots
->matched_count
= htonll(0); /* XXX */
3389 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3394 append_port_stat(struct ofport
*port
, struct ofconn
*ofconn
,
3395 struct ofpbuf
**msgp
)
3397 struct netdev_stats stats
;
3398 struct ofp_port_stats
*ops
;
3400 /* Intentionally ignore return value, since errors will set
3401 * 'stats' to all-1s, which is correct for OpenFlow, and
3402 * netdev_get_stats() will log errors. */
3403 netdev_get_stats(port
->netdev
, &stats
);
3405 ops
= append_ofp_stats_reply(sizeof *ops
, ofconn
, msgp
);
3406 ops
->port_no
= htons(port
->opp
.port_no
);
3407 memset(ops
->pad
, 0, sizeof ops
->pad
);
3408 ops
->rx_packets
= htonll(stats
.rx_packets
);
3409 ops
->tx_packets
= htonll(stats
.tx_packets
);
3410 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3411 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3412 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3413 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3414 ops
->rx_errors
= htonll(stats
.rx_errors
);
3415 ops
->tx_errors
= htonll(stats
.tx_errors
);
3416 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3417 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3418 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3419 ops
->collisions
= htonll(stats
.collisions
);
3423 handle_port_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3425 struct ofproto
*p
= ofconn
->ofproto
;
3426 const struct ofp_port_stats_request
*psr
= ofputil_stats_body(oh
);
3427 struct ofp_port_stats
*ops
;
3429 struct ofport
*port
;
3431 msg
= start_ofp_stats_reply(oh
, sizeof *ops
* 16);
3432 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3433 port
= get_port(p
, ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3435 append_port_stat(port
, ofconn
, &msg
);
3438 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3439 append_port_stat(port
, ofconn
, &msg
);
3443 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3447 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3448 * '*packet_countp' and '*byte_countp'. The returned statistics include
3449 * statistics for all of 'rule''s facets. */
3451 query_stats(struct ofproto
*p
, struct rule
*rule
,
3452 uint64_t *packet_countp
, uint64_t *byte_countp
)
3454 uint32_t keybuf
[ODPUTIL_FLOW_KEY_U32S
];
3455 uint64_t packet_count
, byte_count
;
3456 struct facet
*facet
;
3459 /* Start from historical data for 'rule' itself that are no longer tracked
3460 * by the datapath. This counts, for example, facets that have expired. */
3461 packet_count
= rule
->packet_count
;
3462 byte_count
= rule
->byte_count
;
3464 /* Ask the datapath for statistics on all of the rule's facets.
3466 * Also, add any statistics that are not tracked by the datapath for each
3467 * facet. This includes, for example, statistics for packets that were
3468 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3470 ofpbuf_use_stack(&key
, keybuf
, sizeof keybuf
);
3471 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
3472 struct dpif_flow_stats stats
;
3475 odp_flow_key_from_flow(&key
, &facet
->flow
);
3476 dpif_flow_get(p
->dpif
, key
.data
, key
.size
, NULL
, &stats
);
3478 packet_count
+= stats
.n_packets
+ facet
->packet_count
;
3479 byte_count
+= stats
.n_bytes
+ facet
->byte_count
;
3482 /* Return the stats to the caller. */
3483 *packet_countp
= packet_count
;
3484 *byte_countp
= byte_count
;
3488 calc_flow_duration(long long int start
, ovs_be32
*sec
, ovs_be32
*nsec
)
3490 long long int msecs
= time_msec() - start
;
3491 *sec
= htonl(msecs
/ 1000);
3492 *nsec
= htonl((msecs
% 1000) * (1000 * 1000));
3496 put_ofp_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3497 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3499 struct ofp_flow_stats
*ofs
;
3500 uint64_t packet_count
, byte_count
;
3501 size_t act_len
, len
;
3503 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3507 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3508 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3510 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3512 ofs
= append_ofp_stats_reply(len
, ofconn
, replyp
);
3513 ofs
->length
= htons(len
);
3516 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofs
->match
,
3517 rule
->flow_cookie
, &ofs
->cookie
);
3518 calc_flow_duration(rule
->created
, &ofs
->duration_sec
, &ofs
->duration_nsec
);
3519 ofs
->priority
= htons(rule
->cr
.priority
);
3520 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3521 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3522 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3523 ofs
->packet_count
= htonll(packet_count
);
3524 ofs
->byte_count
= htonll(byte_count
);
3525 if (rule
->n_actions
> 0) {
3526 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3531 is_valid_table(uint8_t table_id
)
3533 return table_id
== 0 || table_id
== 0xff;
3537 handle_flow_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3539 const struct ofp_flow_stats_request
*fsr
= ofputil_stats_body(oh
);
3540 struct ofpbuf
*reply
;
3542 COVERAGE_INC(ofproto_flows_req
);
3543 reply
= start_ofp_stats_reply(oh
, 1024);
3544 if (is_valid_table(fsr
->table_id
)) {
3545 struct cls_cursor cursor
;
3546 struct cls_rule target
;
3549 ofputil_cls_rule_from_match(&fsr
->match
, 0, NXFF_OPENFLOW10
, 0,
3551 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3552 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3553 put_ofp_flow_stats(ofconn
, rule
, fsr
->out_port
, &reply
);
3556 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3562 put_nx_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3563 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3565 struct nx_flow_stats
*nfs
;
3566 uint64_t packet_count
, byte_count
;
3567 size_t act_len
, start_len
;
3568 struct ofpbuf
*reply
;
3570 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3574 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3576 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3578 append_nxstats_reply(sizeof *nfs
+ NXM_MAX_LEN
+ act_len
, ofconn
, replyp
);
3579 start_len
= (*replyp
)->size
;
3582 nfs
= ofpbuf_put_uninit(reply
, sizeof *nfs
);
3585 calc_flow_duration(rule
->created
, &nfs
->duration_sec
, &nfs
->duration_nsec
);
3586 nfs
->cookie
= rule
->flow_cookie
;
3587 nfs
->priority
= htons(rule
->cr
.priority
);
3588 nfs
->idle_timeout
= htons(rule
->idle_timeout
);
3589 nfs
->hard_timeout
= htons(rule
->hard_timeout
);
3590 nfs
->match_len
= htons(nx_put_match(reply
, &rule
->cr
));
3591 memset(nfs
->pad2
, 0, sizeof nfs
->pad2
);
3592 nfs
->packet_count
= htonll(packet_count
);
3593 nfs
->byte_count
= htonll(byte_count
);
3594 if (rule
->n_actions
> 0) {
3595 ofpbuf_put(reply
, rule
->actions
, act_len
);
3597 nfs
->length
= htons(reply
->size
- start_len
);
3601 handle_nxst_flow(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3603 struct nx_flow_stats_request
*nfsr
;
3604 struct cls_rule target
;
3605 struct ofpbuf
*reply
;
3609 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
3611 /* Dissect the message. */
3612 nfsr
= ofpbuf_pull(&b
, sizeof *nfsr
);
3613 error
= nx_pull_match(&b
, ntohs(nfsr
->match_len
), 0, &target
);
3618 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3621 COVERAGE_INC(ofproto_flows_req
);
3622 reply
= start_nxstats_reply(&nfsr
->nsm
, 1024);
3623 if (is_valid_table(nfsr
->table_id
)) {
3624 struct cls_cursor cursor
;
3627 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3628 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3629 put_nx_flow_stats(ofconn
, rule
, nfsr
->out_port
, &reply
);
3632 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3638 flow_stats_ds(struct ofproto
*ofproto
, struct rule
*rule
, struct ds
*results
)
3640 uint64_t packet_count
, byte_count
;
3641 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3643 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3645 ds_put_format(results
, "duration=%llds, ",
3646 (time_msec() - rule
->created
) / 1000);
3647 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3648 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3649 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3650 cls_rule_format(&rule
->cr
, results
);
3652 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3654 ds_put_cstr(results
, "drop");
3656 ds_put_cstr(results
, "\n");
3659 /* Adds a pretty-printed description of all flows to 'results', including
3660 * those marked hidden by secchan (e.g., by in-band control). */
3662 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3664 struct cls_cursor cursor
;
3667 cls_cursor_init(&cursor
, &p
->cls
, NULL
);
3668 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3669 flow_stats_ds(p
, rule
, results
);
3674 query_aggregate_stats(struct ofproto
*ofproto
, struct cls_rule
*target
,
3675 ovs_be16 out_port
, uint8_t table_id
,
3676 struct ofp_aggregate_stats_reply
*oasr
)
3678 uint64_t total_packets
= 0;
3679 uint64_t total_bytes
= 0;
3682 COVERAGE_INC(ofproto_agg_request
);
3684 if (is_valid_table(table_id
)) {
3685 struct cls_cursor cursor
;
3688 cls_cursor_init(&cursor
, &ofproto
->cls
, target
);
3689 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3690 if (!rule_is_hidden(rule
) && rule_has_out_port(rule
, out_port
)) {
3691 uint64_t packet_count
;
3692 uint64_t byte_count
;
3694 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3696 total_packets
+= packet_count
;
3697 total_bytes
+= byte_count
;
3703 oasr
->flow_count
= htonl(n_flows
);
3704 oasr
->packet_count
= htonll(total_packets
);
3705 oasr
->byte_count
= htonll(total_bytes
);
3706 memset(oasr
->pad
, 0, sizeof oasr
->pad
);
3710 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3711 const struct ofp_header
*oh
)
3713 const struct ofp_aggregate_stats_request
*request
= ofputil_stats_body(oh
);
3714 struct ofp_aggregate_stats_reply
*reply
;
3715 struct cls_rule target
;
3718 ofputil_cls_rule_from_match(&request
->match
, 0, NXFF_OPENFLOW10
, 0,
3721 msg
= start_ofp_stats_reply(oh
, sizeof *reply
);
3722 reply
= append_ofp_stats_reply(sizeof *reply
, ofconn
, &msg
);
3723 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3724 request
->table_id
, reply
);
3725 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3730 handle_nxst_aggregate(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3732 struct nx_aggregate_stats_request
*request
;
3733 struct ofp_aggregate_stats_reply
*reply
;
3734 struct cls_rule target
;
3739 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
3741 /* Dissect the message. */
3742 request
= ofpbuf_pull(&b
, sizeof *request
);
3743 error
= nx_pull_match(&b
, ntohs(request
->match_len
), 0, &target
);
3748 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3752 COVERAGE_INC(ofproto_flows_req
);
3753 buf
= start_nxstats_reply(&request
->nsm
, sizeof *reply
);
3754 reply
= ofpbuf_put_uninit(buf
, sizeof *reply
);
3755 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3756 request
->table_id
, reply
);
3757 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3762 struct queue_stats_cbdata
{
3763 struct ofconn
*ofconn
;
3764 struct ofport
*ofport
;
3769 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3770 const struct netdev_queue_stats
*stats
)
3772 struct ofp_queue_stats
*reply
;
3774 reply
= append_ofp_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3775 reply
->port_no
= htons(cbdata
->ofport
->opp
.port_no
);
3776 memset(reply
->pad
, 0, sizeof reply
->pad
);
3777 reply
->queue_id
= htonl(queue_id
);
3778 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3779 reply
->tx_packets
= htonll(stats
->tx_packets
);
3780 reply
->tx_errors
= htonll(stats
->tx_errors
);
3784 handle_queue_stats_dump_cb(uint32_t queue_id
,
3785 struct netdev_queue_stats
*stats
,
3788 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3790 put_queue_stats(cbdata
, queue_id
, stats
);
3794 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3795 struct queue_stats_cbdata
*cbdata
)
3797 cbdata
->ofport
= port
;
3798 if (queue_id
== OFPQ_ALL
) {
3799 netdev_dump_queue_stats(port
->netdev
,
3800 handle_queue_stats_dump_cb
, cbdata
);
3802 struct netdev_queue_stats stats
;
3804 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3805 put_queue_stats(cbdata
, queue_id
, &stats
);
3811 handle_queue_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3813 struct ofproto
*ofproto
= ofconn
->ofproto
;
3814 const struct ofp_queue_stats_request
*qsr
;
3815 struct queue_stats_cbdata cbdata
;
3816 struct ofport
*port
;
3817 unsigned int port_no
;
3820 qsr
= ofputil_stats_body(oh
);
3822 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3825 COVERAGE_INC(ofproto_queue_req
);
3827 cbdata
.ofconn
= ofconn
;
3828 cbdata
.msg
= start_ofp_stats_reply(oh
, 128);
3830 port_no
= ntohs(qsr
->port_no
);
3831 queue_id
= ntohl(qsr
->queue_id
);
3832 if (port_no
== OFPP_ALL
) {
3833 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3834 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3836 } else if (port_no
< ofproto
->max_ports
) {
3837 port
= get_port(ofproto
, ofp_port_to_odp_port(port_no
));
3839 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3842 ofpbuf_delete(cbdata
.msg
);
3843 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3845 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3851 facet_update_time(struct ofproto
*ofproto
, struct facet
*facet
,
3852 const struct dpif_flow_stats
*stats
)
3854 long long int used
= stats
->used
;
3855 if (used
> facet
->used
) {
3857 if (used
> facet
->rule
->used
) {
3858 facet
->rule
->used
= used
;
3860 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
3864 /* Folds the statistics from 'stats' into the counters in 'facet'.
3866 * Because of the meaning of a facet's counters, it only makes sense to do this
3867 * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
3868 * packet that was sent by hand or if it represents statistics that have been
3869 * cleared out of the datapath. */
3871 facet_update_stats(struct ofproto
*ofproto
, struct facet
*facet
,
3872 const struct dpif_flow_stats
*stats
)
3874 if (stats
->n_packets
) {
3875 facet_update_time(ofproto
, facet
, stats
);
3876 facet
->packet_count
+= stats
->n_packets
;
3877 facet
->byte_count
+= stats
->n_bytes
;
3878 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
3882 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3883 * in which no matching flow already exists in the flow table.
3885 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3886 * ofp_actions, to ofconn->ofproto's flow table. Returns 0 on success or an
3887 * OpenFlow error code as encoded by ofp_mkerr() on failure.
3889 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3892 add_flow(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3894 struct ofproto
*p
= ofconn
->ofproto
;
3895 struct ofpbuf
*packet
;
3900 if (fm
->flags
& OFPFF_CHECK_OVERLAP
3901 && classifier_rule_overlaps(&p
->cls
, &fm
->cr
)) {
3902 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3906 if (fm
->buffer_id
!= UINT32_MAX
) {
3907 error
= pktbuf_retrieve(ofconn
->pktbuf
, fm
->buffer_id
,
3911 in_port
= UINT16_MAX
;
3914 rule
= rule_create(&fm
->cr
, fm
->actions
, fm
->n_actions
,
3915 fm
->idle_timeout
, fm
->hard_timeout
, fm
->cookie
,
3916 fm
->flags
& OFPFF_SEND_FLOW_REM
);
3917 rule_insert(p
, rule
);
3919 rule_execute(p
, rule
, in_port
, packet
);
3924 static struct rule
*
3925 find_flow_strict(struct ofproto
*p
, const struct flow_mod
*fm
)
3927 return rule_from_cls_rule(classifier_find_rule_exactly(&p
->cls
, &fm
->cr
));
3931 send_buffered_packet(struct ofconn
*ofconn
,
3932 struct rule
*rule
, uint32_t buffer_id
)
3934 struct ofpbuf
*packet
;
3938 if (buffer_id
== UINT32_MAX
) {
3942 error
= pktbuf_retrieve(ofconn
->pktbuf
, buffer_id
, &packet
, &in_port
);
3947 rule_execute(ofconn
->ofproto
, rule
, in_port
, packet
);
3952 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3954 struct modify_flows_cbdata
{
3955 struct ofproto
*ofproto
;
3956 const struct flow_mod
*fm
;
3960 static int modify_flow(struct ofproto
*, const struct flow_mod
*,
3963 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3964 * encoded by ofp_mkerr() on failure.
3966 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3969 modify_flows_loose(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3971 struct ofproto
*p
= ofconn
->ofproto
;
3972 struct rule
*match
= NULL
;
3973 struct cls_cursor cursor
;
3976 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
3977 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3978 if (!rule_is_hidden(rule
)) {
3980 modify_flow(p
, fm
, rule
);
3985 /* This credits the packet to whichever flow happened to match last.
3986 * That's weird. Maybe we should do a lookup for the flow that
3987 * actually matches the packet? Who knows. */
3988 send_buffered_packet(ofconn
, match
, fm
->buffer_id
);
3991 return add_flow(ofconn
, fm
);
3995 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3996 * code as encoded by ofp_mkerr() on failure.
3998 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
4001 modify_flow_strict(struct ofconn
*ofconn
, struct flow_mod
*fm
)
4003 struct ofproto
*p
= ofconn
->ofproto
;
4004 struct rule
*rule
= find_flow_strict(p
, fm
);
4005 if (rule
&& !rule_is_hidden(rule
)) {
4006 modify_flow(p
, fm
, rule
);
4007 return send_buffered_packet(ofconn
, rule
, fm
->buffer_id
);
4009 return add_flow(ofconn
, fm
);
4013 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
4014 * been identified as a flow in 'p''s flow table to be modified, by changing
4015 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
4016 * ofp_action[] structures). */
4018 modify_flow(struct ofproto
*p
, const struct flow_mod
*fm
, struct rule
*rule
)
4020 size_t actions_len
= fm
->n_actions
* sizeof *rule
->actions
;
4022 rule
->flow_cookie
= fm
->cookie
;
4024 /* If the actions are the same, do nothing. */
4025 if (fm
->n_actions
== rule
->n_actions
4027 || !memcmp(fm
->actions
, rule
->actions
, actions_len
))) {
4031 /* Replace actions. */
4032 free(rule
->actions
);
4033 rule
->actions
= fm
->n_actions
? xmemdup(fm
->actions
, actions_len
) : NULL
;
4034 rule
->n_actions
= fm
->n_actions
;
4036 p
->need_revalidate
= true;
4041 /* OFPFC_DELETE implementation. */
4043 static void delete_flow(struct ofproto
*, struct rule
*, ovs_be16 out_port
);
4045 /* Implements OFPFC_DELETE. */
4047 delete_flows_loose(struct ofproto
*p
, const struct flow_mod
*fm
)
4049 struct rule
*rule
, *next_rule
;
4050 struct cls_cursor cursor
;
4052 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
4053 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
4054 delete_flow(p
, rule
, htons(fm
->out_port
));
4058 /* Implements OFPFC_DELETE_STRICT. */
4060 delete_flow_strict(struct ofproto
*p
, struct flow_mod
*fm
)
4062 struct rule
*rule
= find_flow_strict(p
, fm
);
4064 delete_flow(p
, rule
, htons(fm
->out_port
));
4068 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
4069 * been identified as a flow to delete from 'p''s flow table, by deleting the
4070 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
4073 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
4074 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
4075 * specified 'out_port'. */
4077 delete_flow(struct ofproto
*p
, struct rule
*rule
, ovs_be16 out_port
)
4079 if (rule_is_hidden(rule
)) {
4083 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
4087 rule_send_removed(p
, rule
, OFPRR_DELETE
);
4088 rule_remove(p
, rule
);
4092 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4094 struct ofproto
*p
= ofconn
->ofproto
;
4098 error
= reject_slave_controller(ofconn
, "flow_mod");
4103 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn
->flow_format
);
4108 /* We do not support the emergency flow cache. It will hopefully get
4109 * dropped from OpenFlow in the near future. */
4110 if (fm
.flags
& OFPFF_EMERG
) {
4111 /* There isn't a good fit for an error code, so just state that the
4112 * flow table is full. */
4113 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
4116 error
= validate_actions(fm
.actions
, fm
.n_actions
,
4117 &fm
.cr
.flow
, p
->max_ports
);
4122 switch (fm
.command
) {
4124 return add_flow(ofconn
, &fm
);
4127 return modify_flows_loose(ofconn
, &fm
);
4129 case OFPFC_MODIFY_STRICT
:
4130 return modify_flow_strict(ofconn
, &fm
);
4133 delete_flows_loose(p
, &fm
);
4136 case OFPFC_DELETE_STRICT
:
4137 delete_flow_strict(p
, &fm
);
4141 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
4146 handle_tun_id_from_cookie(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4148 const struct nxt_tun_id_cookie
*msg
4149 = (const struct nxt_tun_id_cookie
*) oh
;
4151 ofconn
->flow_format
= msg
->set
? NXFF_TUN_ID_FROM_COOKIE
: NXFF_OPENFLOW10
;
4156 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4158 struct nx_role_request
*nrr
= (struct nx_role_request
*) oh
;
4159 struct nx_role_request
*reply
;
4163 if (ofconn
->type
!= OFCONN_PRIMARY
) {
4164 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
4166 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4169 role
= ntohl(nrr
->role
);
4170 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
4171 && role
!= NX_ROLE_SLAVE
) {
4172 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
4174 /* There's no good error code for this. */
4175 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
4178 if (role
== NX_ROLE_MASTER
) {
4179 struct ofconn
*other
;
4181 HMAP_FOR_EACH (other
, hmap_node
, &ofconn
->ofproto
->controllers
) {
4182 if (other
->role
== NX_ROLE_MASTER
) {
4183 other
->role
= NX_ROLE_SLAVE
;
4187 ofconn
->role
= role
;
4189 reply
= make_nxmsg_xid(sizeof *reply
, NXT_ROLE_REPLY
, oh
->xid
, &buf
);
4190 reply
->role
= htonl(role
);
4191 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4197 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4199 const struct nxt_set_flow_format
*msg
4200 = (const struct nxt_set_flow_format
*) oh
;
4203 format
= ntohl(msg
->format
);
4204 if (format
== NXFF_OPENFLOW10
4205 || format
== NXFF_TUN_ID_FROM_COOKIE
4206 || format
== NXFF_NXM
) {
4207 ofconn
->flow_format
= format
;
4210 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4215 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4217 struct ofp_header
*ob
;
4220 /* Currently, everything executes synchronously, so we can just
4221 * immediately send the barrier reply. */
4222 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
4223 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4228 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
4230 const struct ofp_header
*oh
= msg
->data
;
4231 const struct ofputil_msg_type
*type
;
4234 error
= ofputil_decode_msg_type(oh
, &type
);
4239 switch (ofputil_msg_type_code(type
)) {
4240 /* OpenFlow requests. */
4241 case OFPUTIL_OFPT_ECHO_REQUEST
:
4242 return handle_echo_request(ofconn
, oh
);
4244 case OFPUTIL_OFPT_FEATURES_REQUEST
:
4245 return handle_features_request(ofconn
, oh
);
4247 case OFPUTIL_OFPT_GET_CONFIG_REQUEST
:
4248 return handle_get_config_request(ofconn
, oh
);
4250 case OFPUTIL_OFPT_SET_CONFIG
:
4251 return handle_set_config(ofconn
, msg
->data
);
4253 case OFPUTIL_OFPT_PACKET_OUT
:
4254 return handle_packet_out(ofconn
, oh
);
4256 case OFPUTIL_OFPT_PORT_MOD
:
4257 return handle_port_mod(ofconn
, oh
);
4259 case OFPUTIL_OFPT_FLOW_MOD
:
4260 return handle_flow_mod(ofconn
, oh
);
4262 case OFPUTIL_OFPT_BARRIER_REQUEST
:
4263 return handle_barrier_request(ofconn
, oh
);
4265 /* OpenFlow replies. */
4266 case OFPUTIL_OFPT_ECHO_REPLY
:
4269 /* Nicira extension requests. */
4270 case OFPUTIL_NXT_STATUS_REQUEST
:
4271 return switch_status_handle_request(
4272 ofconn
->ofproto
->switch_status
, ofconn
->rconn
, oh
);
4274 case OFPUTIL_NXT_TUN_ID_FROM_COOKIE
:
4275 return handle_tun_id_from_cookie(ofconn
, oh
);
4277 case OFPUTIL_NXT_ROLE_REQUEST
:
4278 return handle_role_request(ofconn
, oh
);
4280 case OFPUTIL_NXT_SET_FLOW_FORMAT
:
4281 return handle_nxt_set_flow_format(ofconn
, oh
);
4283 case OFPUTIL_NXT_FLOW_MOD
:
4284 return handle_flow_mod(ofconn
, oh
);
4286 /* OpenFlow statistics requests. */
4287 case OFPUTIL_OFPST_DESC_REQUEST
:
4288 return handle_desc_stats_request(ofconn
, oh
);
4290 case OFPUTIL_OFPST_FLOW_REQUEST
:
4291 return handle_flow_stats_request(ofconn
, oh
);
4293 case OFPUTIL_OFPST_AGGREGATE_REQUEST
:
4294 return handle_aggregate_stats_request(ofconn
, oh
);
4296 case OFPUTIL_OFPST_TABLE_REQUEST
:
4297 return handle_table_stats_request(ofconn
, oh
);
4299 case OFPUTIL_OFPST_PORT_REQUEST
:
4300 return handle_port_stats_request(ofconn
, oh
);
4302 case OFPUTIL_OFPST_QUEUE_REQUEST
:
4303 return handle_queue_stats_request(ofconn
, oh
);
4305 /* Nicira extension statistics requests. */
4306 case OFPUTIL_NXST_FLOW_REQUEST
:
4307 return handle_nxst_flow(ofconn
, oh
);
4309 case OFPUTIL_NXST_AGGREGATE_REQUEST
:
4310 return handle_nxst_aggregate(ofconn
, oh
);
4312 case OFPUTIL_INVALID
:
4313 case OFPUTIL_OFPT_HELLO
:
4314 case OFPUTIL_OFPT_ERROR
:
4315 case OFPUTIL_OFPT_FEATURES_REPLY
:
4316 case OFPUTIL_OFPT_GET_CONFIG_REPLY
:
4317 case OFPUTIL_OFPT_PACKET_IN
:
4318 case OFPUTIL_OFPT_FLOW_REMOVED
:
4319 case OFPUTIL_OFPT_PORT_STATUS
:
4320 case OFPUTIL_OFPT_BARRIER_REPLY
:
4321 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST
:
4322 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY
:
4323 case OFPUTIL_OFPST_DESC_REPLY
:
4324 case OFPUTIL_OFPST_FLOW_REPLY
:
4325 case OFPUTIL_OFPST_QUEUE_REPLY
:
4326 case OFPUTIL_OFPST_PORT_REPLY
:
4327 case OFPUTIL_OFPST_TABLE_REPLY
:
4328 case OFPUTIL_OFPST_AGGREGATE_REPLY
:
4329 case OFPUTIL_NXT_STATUS_REPLY
:
4330 case OFPUTIL_NXT_ROLE_REPLY
:
4331 case OFPUTIL_NXT_FLOW_REMOVED
:
4332 case OFPUTIL_NXST_FLOW_REPLY
:
4333 case OFPUTIL_NXST_AGGREGATE_REPLY
:
4335 if (VLOG_IS_WARN_ENABLED()) {
4336 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4337 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4340 if (oh
->type
== OFPT_STATS_REQUEST
|| oh
->type
== OFPT_STATS_REPLY
) {
4341 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
4343 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4349 handle_openflow(struct ofconn
*ofconn
, struct ofpbuf
*ofp_msg
)
4351 int error
= handle_openflow__(ofconn
, ofp_msg
);
4353 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4355 COVERAGE_INC(ofproto_recv_openflow
);
4359 handle_miss_upcall(struct ofproto
*p
, struct dpif_upcall
*upcall
)
4361 struct facet
*facet
;
4364 /* Obtain in_port and tun_id, at least. */
4365 odp_flow_key_to_flow(upcall
->key
, upcall
->key_len
, &flow
);
4367 /* Set header pointers in 'flow'. */
4368 flow_extract(upcall
->packet
, flow
.tun_id
, flow
.in_port
, &flow
);
4370 /* Check with in-band control to see if this packet should be sent
4371 * to the local port regardless of the flow table. */
4372 if (in_band_msg_in_hook(p
->in_band
, &flow
, upcall
->packet
)) {
4373 struct ofpbuf odp_actions
;
4375 ofpbuf_init(&odp_actions
, 32);
4376 nl_msg_put_u32(&odp_actions
, ODP_ACTION_ATTR_OUTPUT
, ODPP_LOCAL
);
4377 dpif_execute(p
->dpif
, odp_actions
.data
, odp_actions
.size
,
4379 ofpbuf_uninit(&odp_actions
);
4382 facet
= facet_lookup_valid(p
, &flow
);
4384 struct rule
*rule
= rule_lookup(p
, &flow
);
4386 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4387 struct ofport
*port
= get_port(p
, flow
.in_port
);
4389 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4390 COVERAGE_INC(ofproto_no_packet_in
);
4391 /* XXX install 'drop' flow entry */
4392 ofpbuf_delete(upcall
->packet
);
4396 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
,
4400 COVERAGE_INC(ofproto_packet_in
);
4401 send_packet_in(p
, upcall
, &flow
, false);
4405 facet
= facet_create(p
, rule
, &flow
, upcall
->packet
);
4406 } else if (!facet
->may_install
) {
4407 /* The facet is not installable, that is, we need to process every
4408 * packet, so process the current packet's actions into 'facet'. */
4409 facet_make_actions(p
, facet
, upcall
->packet
);
4412 if (facet
->rule
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4414 * Extra-special case for fail-open mode.
4416 * We are in fail-open mode and the packet matched the fail-open rule,
4417 * but we are connected to a controller too. We should send the packet
4418 * up to the controller in the hope that it will try to set up a flow
4419 * and thereby allow us to exit fail-open.
4421 * See the top-level comment in fail-open.c for more information.
4423 send_packet_in(p
, upcall
, &flow
, true);
4426 facet_execute(p
, facet
, upcall
->packet
);
4427 facet_install(p
, facet
, false);
4431 handle_upcall(struct ofproto
*p
, struct dpif_upcall
*upcall
)
4435 switch (upcall
->type
) {
4436 case DPIF_UC_ACTION
:
4437 COVERAGE_INC(ofproto_ctlr_action
);
4438 odp_flow_key_to_flow(upcall
->key
, upcall
->key_len
, &flow
);
4439 send_packet_in(p
, upcall
, &flow
, false);
4442 case DPIF_UC_SAMPLE
:
4444 odp_flow_key_to_flow(upcall
->key
, upcall
->key_len
, &flow
);
4445 ofproto_sflow_received(p
->sflow
, upcall
, &flow
);
4447 ofpbuf_delete(upcall
->packet
);
4451 handle_miss_upcall(p
, upcall
);
4454 case DPIF_N_UC_TYPES
:
4456 VLOG_WARN_RL(&rl
, "upcall has unexpected type %"PRIu32
, upcall
->type
);
4461 /* Flow expiration. */
4463 static int ofproto_dp_max_idle(const struct ofproto
*);
4464 static void ofproto_update_used(struct ofproto
*);
4465 static void rule_expire(struct ofproto
*, struct rule
*);
4466 static void ofproto_expire_facets(struct ofproto
*, int dp_max_idle
);
4468 /* This function is called periodically by ofproto_run(). Its job is to
4469 * collect updates for the flows that have been installed into the datapath,
4470 * most importantly when they last were used, and then use that information to
4471 * expire flows that have not been used recently.
4473 * Returns the number of milliseconds after which it should be called again. */
4475 ofproto_expire(struct ofproto
*ofproto
)
4477 struct rule
*rule
, *next_rule
;
4478 struct cls_cursor cursor
;
4481 /* Update 'used' for each flow in the datapath. */
4482 ofproto_update_used(ofproto
);
4484 /* Expire facets that have been idle too long. */
4485 dp_max_idle
= ofproto_dp_max_idle(ofproto
);
4486 ofproto_expire_facets(ofproto
, dp_max_idle
);
4488 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
4489 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
4490 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
4491 rule_expire(ofproto
, rule
);
4494 /* Let the hook know that we're at a stable point: all outstanding data
4495 * in existing flows has been accounted to the account_cb. Thus, the
4496 * hook can now reasonably do operations that depend on having accurate
4497 * flow volume accounting (currently, that's just bond rebalancing). */
4498 if (ofproto
->ofhooks
->account_checkpoint_cb
) {
4499 ofproto
->ofhooks
->account_checkpoint_cb(ofproto
->aux
);
4502 return MIN(dp_max_idle
, 1000);
4505 /* Update 'used' member of installed facets. */
4507 ofproto_update_used(struct ofproto
*p
)
4509 const struct dpif_flow_stats
*stats
;
4510 struct dpif_flow_dump dump
;
4511 const struct nlattr
*key
;
4514 dpif_flow_dump_start(&dump
, p
->dpif
);
4515 while (dpif_flow_dump_next(&dump
, &key
, &key_len
, NULL
, NULL
, &stats
)) {
4516 struct facet
*facet
;
4519 if (odp_flow_key_to_flow(key
, key_len
, &flow
)) {
4523 odp_flow_key_format(key
, key_len
, &s
);
4524 VLOG_WARN_RL(&rl
, "failed to convert ODP flow key to flow: %s",
4530 facet
= facet_find(p
, &flow
);
4532 if (facet
&& facet
->installed
) {
4533 facet_update_time(p
, facet
, stats
);
4534 facet_account(p
, facet
, stats
->n_bytes
);
4536 /* There's a flow in the datapath that we know nothing about.
4538 COVERAGE_INC(ofproto_unexpected_rule
);
4539 dpif_flow_del(p
->dpif
, key
, key_len
, NULL
);
4542 dpif_flow_dump_done(&dump
);
4545 /* Calculates and returns the number of milliseconds of idle time after which
4546 * facets should expire from the datapath and we should fold their statistics
4547 * into their parent rules in userspace. */
4549 ofproto_dp_max_idle(const struct ofproto
*ofproto
)
4552 * Idle time histogram.
4554 * Most of the time a switch has a relatively small number of facets. When
4555 * this is the case we might as well keep statistics for all of them in
4556 * userspace and to cache them in the kernel datapath for performance as
4559 * As the number of facets increases, the memory required to maintain
4560 * statistics about them in userspace and in the kernel becomes
4561 * significant. However, with a large number of facets it is likely that
4562 * only a few of them are "heavy hitters" that consume a large amount of
4563 * bandwidth. At this point, only heavy hitters are worth caching in the
4564 * kernel and maintaining in userspaces; other facets we can discard.
4566 * The technique used to compute the idle time is to build a histogram with
4567 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
4568 * that is installed in the kernel gets dropped in the appropriate bucket.
4569 * After the histogram has been built, we compute the cutoff so that only
4570 * the most-recently-used 1% of facets (but at least 1000 flows) are kept
4571 * cached. At least the most-recently-used bucket of facets is kept, so
4572 * actually an arbitrary number of facets can be kept in any given
4573 * expiration run (though the next run will delete most of those unless
4574 * they receive additional data).
4576 * This requires a second pass through the facets, in addition to the pass
4577 * made by ofproto_update_used(), because the former function never looks
4578 * at uninstallable facets.
4580 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4581 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4582 int buckets
[N_BUCKETS
] = { 0 };
4583 struct facet
*facet
;
4588 total
= hmap_count(&ofproto
->facets
);
4589 if (total
<= 1000) {
4590 return N_BUCKETS
* BUCKET_WIDTH
;
4593 /* Build histogram. */
4595 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
4596 long long int idle
= now
- facet
->used
;
4597 int bucket
= (idle
<= 0 ? 0
4598 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4599 : (unsigned int) idle
/ BUCKET_WIDTH
);
4603 /* Find the first bucket whose flows should be expired. */
4604 for (bucket
= 0; bucket
< N_BUCKETS
; bucket
++) {
4605 if (buckets
[bucket
]) {
4608 subtotal
+= buckets
[bucket
++];
4609 } while (bucket
< N_BUCKETS
&& subtotal
< MAX(1000, total
/ 100));
4614 if (VLOG_IS_DBG_ENABLED()) {
4618 ds_put_cstr(&s
, "keep");
4619 for (i
= 0; i
< N_BUCKETS
; i
++) {
4621 ds_put_cstr(&s
, ", drop");
4624 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4627 VLOG_INFO("%s: %s (msec:count)",
4628 dpif_name(ofproto
->dpif
), ds_cstr(&s
));
4632 return bucket
* BUCKET_WIDTH
;
4636 facet_active_timeout(struct ofproto
*ofproto
, struct facet
*facet
)
4638 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
) &&
4639 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
4640 struct ofexpired expired
;
4642 if (facet
->installed
) {
4643 struct dpif_flow_stats stats
;
4645 facet_put__(ofproto
, facet
, facet
->actions
, facet
->actions_len
,
4647 facet_update_stats(ofproto
, facet
, &stats
);
4650 expired
.flow
= facet
->flow
;
4651 expired
.packet_count
= facet
->packet_count
;
4652 expired
.byte_count
= facet
->byte_count
;
4653 expired
.used
= facet
->used
;
4654 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4659 ofproto_expire_facets(struct ofproto
*ofproto
, int dp_max_idle
)
4661 long long int cutoff
= time_msec() - dp_max_idle
;
4662 struct facet
*facet
, *next_facet
;
4664 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
4665 facet_active_timeout(ofproto
, facet
);
4666 if (facet
->used
< cutoff
) {
4667 facet_remove(ofproto
, facet
);
4672 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4673 * then delete it entirely. */
4675 rule_expire(struct ofproto
*ofproto
, struct rule
*rule
)
4677 struct facet
*facet
, *next_facet
;
4681 /* Has 'rule' expired? */
4683 if (rule
->hard_timeout
4684 && now
> rule
->created
+ rule
->hard_timeout
* 1000) {
4685 reason
= OFPRR_HARD_TIMEOUT
;
4686 } else if (rule
->idle_timeout
&& list_is_empty(&rule
->facets
)
4687 && now
>rule
->used
+ rule
->idle_timeout
* 1000) {
4688 reason
= OFPRR_IDLE_TIMEOUT
;
4693 COVERAGE_INC(ofproto_expired
);
4695 /* Update stats. (This is a no-op if the rule expired due to an idle
4696 * timeout, because that only happens when the rule has no facets left.) */
4697 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4698 facet_remove(ofproto
, facet
);
4701 /* Get rid of the rule. */
4702 if (!rule_is_hidden(rule
)) {
4703 rule_send_removed(ofproto
, rule
, reason
);
4705 rule_remove(ofproto
, rule
);
4708 static struct ofpbuf
*
4709 compose_ofp_flow_removed(struct ofconn
*ofconn
, const struct rule
*rule
,
4712 struct ofp_flow_removed
*ofr
;
4715 ofr
= make_openflow_xid(sizeof *ofr
, OFPT_FLOW_REMOVED
, htonl(0), &buf
);
4716 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofr
->match
,
4717 rule
->flow_cookie
, &ofr
->cookie
);
4718 ofr
->priority
= htons(rule
->cr
.priority
);
4719 ofr
->reason
= reason
;
4720 calc_flow_duration(rule
->created
, &ofr
->duration_sec
, &ofr
->duration_nsec
);
4721 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4722 ofr
->packet_count
= htonll(rule
->packet_count
);
4723 ofr
->byte_count
= htonll(rule
->byte_count
);
4728 static struct ofpbuf
*
4729 compose_nx_flow_removed(const struct rule
*rule
, uint8_t reason
)
4731 struct nx_flow_removed
*nfr
;
4735 make_nxmsg_xid(sizeof *nfr
, NXT_FLOW_REMOVED
, htonl(0), &buf
);
4736 match_len
= nx_put_match(buf
, &rule
->cr
);
4739 nfr
->cookie
= rule
->flow_cookie
;
4740 nfr
->priority
= htons(rule
->cr
.priority
);
4741 nfr
->reason
= reason
;
4742 calc_flow_duration(rule
->created
, &nfr
->duration_sec
, &nfr
->duration_nsec
);
4743 nfr
->idle_timeout
= htons(rule
->idle_timeout
);
4744 nfr
->match_len
= htons(match_len
);
4745 nfr
->packet_count
= htonll(rule
->packet_count
);
4746 nfr
->byte_count
= htonll(rule
->byte_count
);
4752 rule_send_removed(struct ofproto
*p
, struct rule
*rule
, uint8_t reason
)
4754 struct ofconn
*ofconn
;
4756 if (!rule
->send_flow_removed
) {
4760 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
4763 if (!rconn_is_connected(ofconn
->rconn
)
4764 || !ofconn_receives_async_msgs(ofconn
)) {
4768 msg
= (ofconn
->flow_format
== NXFF_NXM
4769 ? compose_nx_flow_removed(rule
, reason
)
4770 : compose_ofp_flow_removed(ofconn
, rule
, reason
));
4772 /* Account flow expirations under ofconn->reply_counter, the counter
4773 * for replies to OpenFlow requests. That works because preventing
4774 * OpenFlow requests from being processed also prevents new flows from
4775 * being added (and expiring). (It also prevents processing OpenFlow
4776 * requests that would not add new flows, so it is imperfect.) */
4777 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
4781 /* pinsched callback for sending 'ofp_packet_in' on 'ofconn'. */
4783 do_send_packet_in(struct ofpbuf
*ofp_packet_in
, void *ofconn_
)
4785 struct ofconn
*ofconn
= ofconn_
;
4787 rconn_send_with_limit(ofconn
->rconn
, ofp_packet_in
,
4788 ofconn
->packet_in_counter
, 100);
4791 /* Takes 'upcall', whose packet has the flow specified by 'flow', composes an
4792 * OpenFlow packet-in message from it, and passes it to 'ofconn''s packet
4793 * scheduler for sending.
4795 * If 'clone' is true, the caller retains ownership of 'upcall->packet'.
4796 * Otherwise, ownership is transferred to this function. */
4798 schedule_packet_in(struct ofconn
*ofconn
, struct dpif_upcall
*upcall
,
4799 const struct flow
*flow
, bool clone
)
4801 enum { OPI_SIZE
= offsetof(struct ofp_packet_in
, data
) };
4802 struct ofproto
*ofproto
= ofconn
->ofproto
;
4803 struct ofp_packet_in
*opi
;
4804 int total_len
, send_len
;
4805 struct ofpbuf
*packet
;
4809 /* Get OpenFlow buffer_id. */
4810 if (upcall
->type
== DPIF_UC_ACTION
) {
4811 buffer_id
= UINT32_MAX
;
4812 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4813 buffer_id
= pktbuf_get_null();
4814 } else if (!ofconn
->pktbuf
) {
4815 buffer_id
= UINT32_MAX
;
4817 buffer_id
= pktbuf_save(ofconn
->pktbuf
, upcall
->packet
, flow
->in_port
);
4820 /* Figure out how much of the packet to send. */
4821 total_len
= send_len
= upcall
->packet
->size
;
4822 if (buffer_id
!= UINT32_MAX
) {
4823 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4825 if (upcall
->type
== DPIF_UC_ACTION
) {
4826 send_len
= MIN(send_len
, upcall
->userdata
);
4829 /* Copy or steal buffer for OFPT_PACKET_IN. */
4831 packet
= ofpbuf_clone_data_with_headroom(upcall
->packet
->data
,
4832 send_len
, OPI_SIZE
);
4834 packet
= upcall
->packet
;
4835 packet
->size
= send_len
;
4838 /* Add OFPT_PACKET_IN. */
4839 opi
= ofpbuf_push_zeros(packet
, OPI_SIZE
);
4840 opi
->header
.version
= OFP_VERSION
;
4841 opi
->header
.type
= OFPT_PACKET_IN
;
4842 opi
->total_len
= htons(total_len
);
4843 opi
->in_port
= htons(odp_port_to_ofp_port(flow
->in_port
));
4844 opi
->reason
= upcall
->type
== DPIF_UC_MISS
? OFPR_NO_MATCH
: OFPR_ACTION
;
4845 opi
->buffer_id
= htonl(buffer_id
);
4846 update_openflow_length(packet
);
4848 /* Hand over to packet scheduler. It might immediately call into
4849 * do_send_packet_in() or it might buffer it for a while (until a later
4850 * call to pinsched_run()). */
4851 idx
= upcall
->type
== DPIF_UC_MISS
? 0 : 1;
4852 pinsched_send(ofconn
->schedulers
[idx
], flow
->in_port
,
4853 packet
, do_send_packet_in
, ofconn
);
4856 /* Given 'upcall', of type DPIF_UC_ACTION or DPIF_UC_MISS, sends an
4857 * OFPT_PACKET_IN message to each OpenFlow controller as necessary according to
4858 * their individual configurations.
4860 * Takes ownership of 'packet'. */
4862 send_packet_in(struct ofproto
*ofproto
, struct dpif_upcall
*upcall
,
4863 const struct flow
*flow
, bool clone
)
4865 struct ofconn
*ofconn
, *prev
;
4868 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
4869 if (ofconn_receives_async_msgs(ofconn
)) {
4871 schedule_packet_in(prev
, upcall
, flow
, true);
4877 schedule_packet_in(prev
, upcall
, flow
, clone
);
4878 } else if (!clone
) {
4879 ofpbuf_delete(upcall
->packet
);
4884 pick_datapath_id(const struct ofproto
*ofproto
)
4886 const struct ofport
*port
;
4888 port
= get_port(ofproto
, ODPP_LOCAL
);
4890 uint8_t ea
[ETH_ADDR_LEN
];
4893 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4895 return eth_addr_to_uint64(ea
);
4897 VLOG_WARN("could not get MAC address for %s (%s)",
4898 netdev_get_name(port
->netdev
), strerror(error
));
4900 return ofproto
->fallback_dpid
;
4904 pick_fallback_dpid(void)
4906 uint8_t ea
[ETH_ADDR_LEN
];
4907 eth_addr_nicira_random(ea
);
4908 return eth_addr_to_uint64(ea
);
4912 ofproto_unixctl_list(struct unixctl_conn
*conn
, const char *arg OVS_UNUSED
,
4913 void *aux OVS_UNUSED
)
4915 const struct shash_node
*node
;
4919 SHASH_FOR_EACH (node
, &all_ofprotos
) {
4920 ds_put_format(&results
, "%s\n", node
->name
);
4922 unixctl_command_reply(conn
, 200, ds_cstr(&results
));
4923 ds_destroy(&results
);
4926 struct ofproto_trace
{
4927 struct action_xlate_ctx ctx
;
4933 trace_format_rule(struct ds
*result
, int level
, const struct rule
*rule
)
4935 ds_put_char_multiple(result
, '\t', level
);
4937 ds_put_cstr(result
, "No match\n");
4941 ds_put_format(result
, "Rule: cookie=%#"PRIx64
" ",
4942 ntohll(rule
->flow_cookie
));
4943 cls_rule_format(&rule
->cr
, result
);
4944 ds_put_char(result
, '\n');
4946 ds_put_char_multiple(result
, '\t', level
);
4947 ds_put_cstr(result
, "OpenFlow ");
4948 ofp_print_actions(result
, (const struct ofp_action_header
*) rule
->actions
,
4949 rule
->n_actions
* sizeof *rule
->actions
);
4950 ds_put_char(result
, '\n');
4954 trace_format_flow(struct ds
*result
, int level
, const char *title
,
4955 struct ofproto_trace
*trace
)
4957 ds_put_char_multiple(result
, '\t', level
);
4958 ds_put_format(result
, "%s: ", title
);
4959 if (flow_equal(&trace
->ctx
.flow
, &trace
->flow
)) {
4960 ds_put_cstr(result
, "unchanged");
4962 flow_format(result
, &trace
->ctx
.flow
);
4963 trace
->flow
= trace
->ctx
.flow
;
4965 ds_put_char(result
, '\n');
4969 trace_resubmit(struct action_xlate_ctx
*ctx
, const struct rule
*rule
)
4971 struct ofproto_trace
*trace
= CONTAINER_OF(ctx
, struct ofproto_trace
, ctx
);
4972 struct ds
*result
= trace
->result
;
4974 ds_put_char(result
, '\n');
4975 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
4976 trace_format_rule(result
, ctx
->recurse
+ 1, rule
);
4980 ofproto_unixctl_trace(struct unixctl_conn
*conn
, const char *args_
,
4981 void *aux OVS_UNUSED
)
4983 char *dpname
, *in_port_s
, *tun_id_s
, *packet_s
;
4984 char *args
= xstrdup(args_
);
4985 char *save_ptr
= NULL
;
4986 struct ofproto
*ofproto
;
4987 struct ofpbuf packet
;
4995 ofpbuf_init(&packet
, strlen(args
) / 2);
4998 dpname
= strtok_r(args
, " ", &save_ptr
);
4999 tun_id_s
= strtok_r(NULL
, " ", &save_ptr
);
5000 in_port_s
= strtok_r(NULL
, " ", &save_ptr
);
5001 packet_s
= strtok_r(NULL
, "", &save_ptr
); /* Get entire rest of line. */
5002 if (!dpname
|| !in_port_s
|| !packet_s
) {
5003 unixctl_command_reply(conn
, 501, "Bad command syntax");
5007 ofproto
= shash_find_data(&all_ofprotos
, dpname
);
5009 unixctl_command_reply(conn
, 501, "Unknown ofproto (use ofproto/list "
5014 tun_id
= htonll(strtoull(tun_id_s
, NULL
, 10));
5015 in_port
= ofp_port_to_odp_port(atoi(in_port_s
));
5017 packet_s
= ofpbuf_put_hex(&packet
, packet_s
, NULL
);
5018 packet_s
+= strspn(packet_s
, " ");
5019 if (*packet_s
!= '\0') {
5020 unixctl_command_reply(conn
, 501, "Trailing garbage in command");
5023 if (packet
.size
< ETH_HEADER_LEN
) {
5024 unixctl_command_reply(conn
, 501, "Packet data too short for Ethernet");
5028 ds_put_cstr(&result
, "Packet: ");
5029 s
= ofp_packet_to_string(packet
.data
, packet
.size
, packet
.size
);
5030 ds_put_cstr(&result
, s
);
5033 flow_extract(&packet
, tun_id
, in_port
, &flow
);
5034 ds_put_cstr(&result
, "Flow: ");
5035 flow_format(&result
, &flow
);
5036 ds_put_char(&result
, '\n');
5038 rule
= rule_lookup(ofproto
, &flow
);
5039 trace_format_rule(&result
, 0, rule
);
5041 struct ofproto_trace trace
;
5042 struct ofpbuf
*odp_actions
;
5044 trace
.result
= &result
;
5046 action_xlate_ctx_init(&trace
.ctx
, ofproto
, &flow
, &packet
);
5047 trace
.ctx
.resubmit_hook
= trace_resubmit
;
5048 odp_actions
= xlate_actions(&trace
.ctx
,
5049 rule
->actions
, rule
->n_actions
);
5051 ds_put_char(&result
, '\n');
5052 trace_format_flow(&result
, 0, "Final flow", &trace
);
5053 ds_put_cstr(&result
, "Datapath actions: ");
5054 format_odp_actions(&result
, odp_actions
->data
, odp_actions
->size
);
5055 ofpbuf_delete(odp_actions
);
5058 unixctl_command_reply(conn
, 200, ds_cstr(&result
));
5061 ds_destroy(&result
);
5062 ofpbuf_uninit(&packet
);
5067 ofproto_unixctl_init(void)
5069 static bool registered
;
5075 unixctl_command_register("ofproto/list", ofproto_unixctl_list
, NULL
);
5076 unixctl_command_register("ofproto/trace", ofproto_unixctl_trace
, NULL
);
5080 default_normal_ofhook_cb(const struct flow
*flow
, const struct ofpbuf
*packet
,
5081 struct ofpbuf
*odp_actions
, tag_type
*tags
,
5082 uint16_t *nf_output_iface
, void *ofproto_
)
5084 struct ofproto
*ofproto
= ofproto_
;
5087 /* Drop frames for reserved multicast addresses. */
5088 if (eth_addr_is_reserved(flow
->dl_dst
)) {
5092 /* Learn source MAC (but don't try to learn from revalidation). */
5093 if (packet
!= NULL
) {
5094 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
5096 GRAT_ARP_LOCK_NONE
);
5098 /* The log messages here could actually be useful in debugging,
5099 * so keep the rate limit relatively high. */
5100 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
5101 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
5102 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
5103 ofproto_revalidate(ofproto
, rev_tag
);
5107 /* Determine output port. */
5108 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
5111 flood_packets(ofproto
, flow
->in_port
, OFPPC_NO_FLOOD
,
5112 nf_output_iface
, odp_actions
);
5113 } else if (out_port
!= flow
->in_port
) {
5114 nl_msg_put_u32(odp_actions
, ODP_ACTION_ATTR_OUTPUT
, out_port
);
5115 *nf_output_iface
= out_port
;
5123 static const struct ofhooks default_ofhooks
= {
5124 default_normal_ofhook_cb
,