2 * Copyright (c) 2009, 2010 Nicira Networks.
3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
22 #include <sys/socket.h>
24 #include <netinet/in.h>
27 #include "byte-order.h"
28 #include "classifier.h"
30 #include "discovery.h"
32 #include "dynamic-string.h"
33 #include "fail-open.h"
37 #include "mac-learning.h"
42 #include "ofp-print.h"
44 #include "ofproto-sflow.h"
46 #include "openflow/nicira-ext.h"
47 #include "openflow/openflow.h"
48 #include "openvswitch/datapath-protocol.h"
52 #include "poll-loop.h"
56 #include "stream-ssl.h"
64 VLOG_DEFINE_THIS_MODULE(ofproto
);
66 #include "sflow_api.h"
69 struct hmap_node hmap_node
; /* In struct ofproto's "ports" hmap. */
70 struct netdev
*netdev
;
71 struct ofp_phy_port opp
; /* In host byte order. */
75 static void ofport_free(struct ofport
*);
76 static void hton_ofp_phy_port(struct ofp_phy_port
*);
78 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
79 const struct flow
*, struct ofproto
*,
80 const struct ofpbuf
*packet
,
81 struct odp_actions
*out
, tag_type
*tags
,
82 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
84 /* An OpenFlow flow. */
86 long long int used
; /* Time last used; time created if not used. */
87 long long int created
; /* Creation time. */
91 * - Do include packets and bytes from facets that have been deleted or
92 * whose own statistics have been folded into the rule.
94 * - Do include packets and bytes sent "by hand" that were accounted to
95 * the rule without any facet being involved (this is a rare corner
96 * case in rule_execute()).
98 * - Do not include packet or bytes that can be obtained from any facet's
99 * packet_count or byte_count member or that can be obtained from the
100 * datapath by, e.g., dpif_flow_get() for any facet.
102 uint64_t packet_count
; /* Number of packets received. */
103 uint64_t byte_count
; /* Number of bytes received. */
105 ovs_be64 flow_cookie
; /* Controller-issued identifier. */
107 struct cls_rule cr
; /* In owning ofproto's classifier. */
108 uint16_t idle_timeout
; /* In seconds from time of last use. */
109 uint16_t hard_timeout
; /* In seconds from time of creation. */
110 bool send_flow_removed
; /* Send a flow removed message? */
111 int n_actions
; /* Number of elements in actions[]. */
112 union ofp_action
*actions
; /* OpenFlow actions. */
113 struct list facets
; /* List of "struct facet"s. */
116 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
117 static bool rule_is_hidden(const struct rule
*);
119 static struct rule
*rule_create(const struct cls_rule
*,
120 const union ofp_action
*, size_t n_actions
,
121 uint16_t idle_timeout
, uint16_t hard_timeout
,
122 ovs_be64 flow_cookie
, bool send_flow_removed
);
123 static void rule_destroy(struct ofproto
*, struct rule
*);
124 static void rule_free(struct rule
*);
126 static struct rule
*rule_lookup(struct ofproto
*, const struct flow
*);
127 static void rule_insert(struct ofproto
*, struct rule
*);
128 static void rule_remove(struct ofproto
*, struct rule
*);
130 static void rule_send_removed(struct ofproto
*, struct rule
*, uint8_t reason
);
132 /* An exact-match instantiation of an OpenFlow flow. */
134 long long int used
; /* Time last used; time created if not used. */
138 * - Do include packets and bytes sent "by hand", e.g. with
141 * - Do include packets and bytes that were obtained from the datapath
142 * when a flow was deleted (e.g. dpif_flow_del()) or when its
143 * statistics were reset (e.g. dpif_flow_put() with ODPPF_ZERO_STATS).
145 * - Do not include any packets or bytes that can currently be obtained
146 * from the datapath by, e.g., dpif_flow_get().
148 uint64_t packet_count
; /* Number of packets received. */
149 uint64_t byte_count
; /* Number of bytes received. */
151 /* Number of bytes passed to account_cb. This may include bytes that can
152 * currently obtained from the datapath (thus, it can be greater than
154 uint64_t accounted_bytes
;
156 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
157 struct list list_node
; /* In owning rule's 'facets' list. */
158 struct rule
*rule
; /* Owning rule. */
159 struct flow flow
; /* Exact-match flow. */
160 bool installed
; /* Installed in datapath? */
161 bool may_install
; /* True ordinarily; false if actions must
162 * be reassessed for every packet. */
163 int n_actions
; /* Number of elements in actions[]. */
164 union odp_action
*actions
; /* Datapath actions. */
165 tag_type tags
; /* Tags (set only by hooks). */
166 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
169 static struct facet
*facet_create(struct ofproto
*, struct rule
*,
171 const struct ofpbuf
*packet
);
172 static void facet_remove(struct ofproto
*, struct facet
*);
173 static void facet_free(struct facet
*);
175 static struct facet
*facet_lookup_valid(struct ofproto
*, const struct flow
*);
176 static bool facet_revalidate(struct ofproto
*, struct facet
*);
178 static void facet_install(struct ofproto
*, struct facet
*, bool zero_stats
);
179 static void facet_uninstall(struct ofproto
*, struct facet
*);
180 static void facet_flush_stats(struct ofproto
*, struct facet
*);
182 static void facet_make_actions(struct ofproto
*, struct facet
*,
183 const struct ofpbuf
*packet
);
184 static void facet_update_stats(struct ofproto
*, struct facet
*,
185 const struct odp_flow_stats
*);
187 /* ofproto supports two kinds of OpenFlow connections:
189 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
190 * maintains persistent connections to these controllers and by default
191 * sends them asynchronous messages such as packet-ins.
193 * - "Service" connections, e.g. from ovs-ofctl. When these connections
194 * drop, it is the other side's responsibility to reconnect them if
195 * necessary. ofproto does not send them asynchronous messages by default.
197 * Currently, active (tcp, ssl, unix) connections are always "primary"
198 * connections and passive (ptcp, pssl, punix) connections are always "service"
199 * connections. There is no inherent reason for this, but it reflects the
203 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
204 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
207 /* A listener for incoming OpenFlow "service" connections. */
209 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
210 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
212 /* These are not used by ofservice directly. They are settings for
213 * accepted "struct ofconn"s from the pvconn. */
214 int probe_interval
; /* Max idle time before probing, in seconds. */
215 int rate_limit
; /* Max packet-in rate in packets per second. */
216 int burst_limit
; /* Limit on accumulating packet credits. */
219 static struct ofservice
*ofservice_lookup(struct ofproto
*,
221 static int ofservice_create(struct ofproto
*,
222 const struct ofproto_controller
*);
223 static void ofservice_reconfigure(struct ofservice
*,
224 const struct ofproto_controller
*);
225 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
227 /* An OpenFlow connection. */
229 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
230 struct list node
; /* In struct ofproto's "all_conns" list. */
231 struct rconn
*rconn
; /* OpenFlow connection. */
232 enum ofconn_type type
; /* Type. */
233 int flow_format
; /* One of NXFF_*. */
235 /* OFPT_PACKET_IN related data. */
236 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
237 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
238 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
239 int miss_send_len
; /* Bytes to send of buffered packets. */
241 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
242 * requests, and the maximum number before we stop reading OpenFlow
244 #define OFCONN_REPLY_MAX 100
245 struct rconn_packet_counter
*reply_counter
;
247 /* type == OFCONN_PRIMARY only. */
248 enum nx_role role
; /* Role. */
249 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
250 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
251 struct status_category
*ss
; /* Switch status category. */
252 enum ofproto_band band
; /* In-band or out-of-band? */
255 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
256 * "schedulers" array. Their values are 0 and 1, and their meanings and values
257 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
258 * case anything ever changes, check their values here. */
259 #define N_SCHEDULERS 2
260 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
261 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
262 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
263 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
265 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
267 static void ofconn_destroy(struct ofconn
*);
268 static void ofconn_run(struct ofconn
*);
269 static void ofconn_wait(struct ofconn
*);
270 static bool ofconn_receives_async_msgs(const struct ofconn
*);
271 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
272 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
274 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
275 struct rconn_packet_counter
*counter
);
277 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
278 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
282 uint64_t datapath_id
; /* Datapath ID. */
283 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
284 char *mfr_desc
; /* Manufacturer. */
285 char *hw_desc
; /* Hardware. */
286 char *sw_desc
; /* Software version. */
287 char *serial_desc
; /* Serial number. */
288 char *dp_desc
; /* Datapath description. */
292 struct netdev_monitor
*netdev_monitor
;
293 struct hmap ports
; /* Contains "struct ofport"s. */
294 struct shash port_by_name
;
298 struct switch_status
*switch_status
;
299 struct fail_open
*fail_open
;
300 struct netflow
*netflow
;
301 struct ofproto_sflow
*sflow
;
303 /* In-band control. */
304 struct in_band
*in_band
;
305 long long int next_in_band_update
;
306 struct sockaddr_in
*extra_in_band_remotes
;
307 size_t n_extra_remotes
;
311 struct classifier cls
;
312 long long int next_expiration
;
316 bool need_revalidate
;
317 struct tag_set revalidate_set
;
319 /* OpenFlow connections. */
320 struct hmap controllers
; /* Controller "struct ofconn"s. */
321 struct list all_conns
; /* Contains "struct ofconn"s. */
322 enum ofproto_fail_mode fail_mode
;
324 /* OpenFlow listeners. */
325 struct hmap services
; /* Contains "struct ofservice"s. */
326 struct pvconn
**snoops
;
329 /* Hooks for ovs-vswitchd. */
330 const struct ofhooks
*ofhooks
;
333 /* Used by default ofhooks. */
334 struct mac_learning
*ml
;
337 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
339 static const struct ofhooks default_ofhooks
;
341 static uint64_t pick_datapath_id(const struct ofproto
*);
342 static uint64_t pick_fallback_dpid(void);
344 static int ofproto_expire(struct ofproto
*);
346 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
348 static void handle_openflow(struct ofconn
*, struct ofpbuf
*);
350 static struct ofport
*get_port(const struct ofproto
*, uint16_t odp_port
);
351 static void update_port(struct ofproto
*, const char *devname
);
352 static int init_ports(struct ofproto
*);
353 static void reinit_ports(struct ofproto
*);
356 ofproto_create(const char *datapath
, const char *datapath_type
,
357 const struct ofhooks
*ofhooks
, void *aux
,
358 struct ofproto
**ofprotop
)
360 struct odp_stats stats
;
367 /* Connect to datapath and start listening for messages. */
368 error
= dpif_open(datapath
, datapath_type
, &dpif
);
370 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
373 error
= dpif_get_dp_stats(dpif
, &stats
);
375 VLOG_ERR("failed to obtain stats for datapath %s: %s",
376 datapath
, strerror(error
));
380 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
382 VLOG_ERR("failed to listen on datapath %s: %s",
383 datapath
, strerror(error
));
387 dpif_flow_flush(dpif
);
388 dpif_recv_purge(dpif
);
390 /* Initialize settings. */
391 p
= xzalloc(sizeof *p
);
392 p
->fallback_dpid
= pick_fallback_dpid();
393 p
->datapath_id
= p
->fallback_dpid
;
394 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
395 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
396 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
397 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
398 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
400 /* Initialize datapath. */
402 p
->netdev_monitor
= netdev_monitor_create();
403 hmap_init(&p
->ports
);
404 shash_init(&p
->port_by_name
);
405 p
->max_ports
= stats
.max_ports
;
407 /* Initialize submodules. */
408 p
->switch_status
= switch_status_create(p
);
413 /* Initialize in-band control. */
415 p
->in_band_queue
= -1;
417 /* Initialize flow table. */
418 classifier_init(&p
->cls
);
419 p
->next_expiration
= time_msec() + 1000;
421 /* Initialize facet table. */
422 hmap_init(&p
->facets
);
423 p
->need_revalidate
= false;
424 tag_set_init(&p
->revalidate_set
);
426 /* Initialize OpenFlow connections. */
427 list_init(&p
->all_conns
);
428 hmap_init(&p
->controllers
);
429 hmap_init(&p
->services
);
433 /* Initialize hooks. */
435 p
->ofhooks
= ofhooks
;
439 p
->ofhooks
= &default_ofhooks
;
441 p
->ml
= mac_learning_create();
444 /* Pick final datapath ID. */
445 p
->datapath_id
= pick_datapath_id(p
);
446 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
453 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
455 uint64_t old_dpid
= p
->datapath_id
;
456 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
457 if (p
->datapath_id
!= old_dpid
) {
458 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
460 /* Force all active connections to reconnect, since there is no way to
461 * notify a controller that the datapath ID has changed. */
462 ofproto_reconnect_controllers(p
);
467 is_discovery_controller(const struct ofproto_controller
*c
)
469 return !strcmp(c
->target
, "discover");
473 is_in_band_controller(const struct ofproto_controller
*c
)
475 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
478 /* Creates a new controller in 'ofproto'. Some of the settings are initially
479 * drawn from 'c', but update_controller() needs to be called later to finish
480 * the new ofconn's configuration. */
482 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
484 struct discovery
*discovery
;
485 struct ofconn
*ofconn
;
487 if (is_discovery_controller(c
)) {
488 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
489 ofproto
->dpif
, ofproto
->switch_status
,
498 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_PRIMARY
);
499 ofconn
->pktbuf
= pktbuf_create();
500 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
502 ofconn
->discovery
= discovery
;
504 char *name
= ofconn_make_name(ofproto
, c
->target
);
505 rconn_connect(ofconn
->rconn
, c
->target
, name
);
508 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
509 hash_string(c
->target
, 0));
512 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
513 * target or turn discovery on or off (these are done by creating new ofconns
514 * and deleting old ones), but it can update the rest of an ofconn's
517 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
521 ofconn
->band
= (is_in_band_controller(c
)
522 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
524 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
526 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
527 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
529 if (ofconn
->discovery
) {
530 discovery_set_update_resolv_conf(ofconn
->discovery
,
531 c
->update_resolv_conf
);
532 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
535 ofconn_set_rate_limit(ofconn
, c
->rate_limit
, c
->burst_limit
);
539 ofconn_get_target(const struct ofconn
*ofconn
)
541 return ofconn
->discovery
? "discover" : rconn_get_target(ofconn
->rconn
);
544 static struct ofconn
*
545 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
547 struct ofconn
*ofconn
;
549 HMAP_FOR_EACH_WITH_HASH (ofconn
, hmap_node
,
550 hash_string(target
, 0), &ofproto
->controllers
) {
551 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
559 update_in_band_remotes(struct ofproto
*ofproto
)
561 const struct ofconn
*ofconn
;
562 struct sockaddr_in
*addrs
;
563 size_t max_addrs
, n_addrs
;
567 /* Allocate enough memory for as many remotes as we could possibly have. */
568 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
569 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
572 /* Add all the remotes. */
574 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
575 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
577 if (ofconn
->band
== OFPROTO_OUT_OF_BAND
) {
581 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
582 if (sin
->sin_addr
.s_addr
) {
583 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
586 if (ofconn
->discovery
) {
590 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
591 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
594 /* Create or update or destroy in-band.
596 * Ordinarily we only enable in-band if there's at least one remote
597 * address, but discovery needs the in-band rules for DHCP to be installed
598 * even before we know any remote addresses. */
599 if (n_addrs
|| discovery
) {
600 if (!ofproto
->in_band
) {
601 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
604 if (ofproto
->in_band
) {
605 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
607 in_band_set_queue(ofproto
->in_band
, ofproto
->in_band_queue
);
608 ofproto
->next_in_band_update
= time_msec() + 1000;
610 in_band_destroy(ofproto
->in_band
);
611 ofproto
->in_band
= NULL
;
619 update_fail_open(struct ofproto
*p
)
621 struct ofconn
*ofconn
;
623 if (!hmap_is_empty(&p
->controllers
)
624 && p
->fail_mode
== OFPROTO_FAIL_STANDALONE
) {
625 struct rconn
**rconns
;
629 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
633 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
634 HMAP_FOR_EACH (ofconn
, hmap_node
, &p
->controllers
) {
635 rconns
[n
++] = ofconn
->rconn
;
638 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
639 /* p->fail_open takes ownership of 'rconns'. */
641 fail_open_destroy(p
->fail_open
);
647 ofproto_set_controllers(struct ofproto
*p
,
648 const struct ofproto_controller
*controllers
,
649 size_t n_controllers
)
651 struct shash new_controllers
;
652 struct ofconn
*ofconn
, *next_ofconn
;
653 struct ofservice
*ofservice
, *next_ofservice
;
657 /* Create newly configured controllers and services.
658 * Create a name to ofproto_controller mapping in 'new_controllers'. */
659 shash_init(&new_controllers
);
660 for (i
= 0; i
< n_controllers
; i
++) {
661 const struct ofproto_controller
*c
= &controllers
[i
];
663 if (!vconn_verify_name(c
->target
) || !strcmp(c
->target
, "discover")) {
664 if (!find_controller_by_target(p
, c
->target
)) {
665 add_controller(p
, c
);
667 } else if (!pvconn_verify_name(c
->target
)) {
668 if (!ofservice_lookup(p
, c
->target
) && ofservice_create(p
, c
)) {
672 VLOG_WARN_RL(&rl
, "%s: unsupported controller \"%s\"",
673 dpif_name(p
->dpif
), c
->target
);
677 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
680 /* Delete controllers that are no longer configured.
681 * Update configuration of all now-existing controllers. */
683 HMAP_FOR_EACH_SAFE (ofconn
, next_ofconn
, hmap_node
, &p
->controllers
) {
684 struct ofproto_controller
*c
;
686 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
688 ofconn_destroy(ofconn
);
690 update_controller(ofconn
, c
);
697 /* Delete services that are no longer configured.
698 * Update configuration of all now-existing services. */
699 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
700 struct ofproto_controller
*c
;
702 c
= shash_find_data(&new_controllers
,
703 pvconn_get_name(ofservice
->pvconn
));
705 ofservice_destroy(p
, ofservice
);
707 ofservice_reconfigure(ofservice
, c
);
711 shash_destroy(&new_controllers
);
713 update_in_band_remotes(p
);
716 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
717 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
718 struct ofconn
, hmap_node
);
719 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
720 rconn_status_cb
, ofconn
->rconn
);
725 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
727 p
->fail_mode
= fail_mode
;
731 /* Drops the connections between 'ofproto' and all of its controllers, forcing
732 * them to reconnect. */
734 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
736 struct ofconn
*ofconn
;
738 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
739 rconn_reconnect(ofconn
->rconn
);
744 any_extras_changed(const struct ofproto
*ofproto
,
745 const struct sockaddr_in
*extras
, size_t n
)
749 if (n
!= ofproto
->n_extra_remotes
) {
753 for (i
= 0; i
< n
; i
++) {
754 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
755 const struct sockaddr_in
*new = &extras
[i
];
757 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
758 old
->sin_port
!= new->sin_port
) {
766 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
767 * in-band control should guarantee access, in the same way that in-band
768 * control guarantees access to OpenFlow controllers. */
770 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
771 const struct sockaddr_in
*extras
, size_t n
)
773 if (!any_extras_changed(ofproto
, extras
, n
)) {
777 free(ofproto
->extra_in_band_remotes
);
778 ofproto
->n_extra_remotes
= n
;
779 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
781 update_in_band_remotes(ofproto
);
784 /* Sets the OpenFlow queue used by flows set up by in-band control on
785 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
786 * flows will use the default queue. */
788 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
790 if (queue_id
!= ofproto
->in_band_queue
) {
791 ofproto
->in_band_queue
= queue_id
;
792 update_in_band_remotes(ofproto
);
797 ofproto_set_desc(struct ofproto
*p
,
798 const char *mfr_desc
, const char *hw_desc
,
799 const char *sw_desc
, const char *serial_desc
,
802 struct ofp_desc_stats
*ods
;
805 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
806 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
807 sizeof ods
->mfr_desc
);
810 p
->mfr_desc
= xstrdup(mfr_desc
);
813 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
814 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
815 sizeof ods
->hw_desc
);
818 p
->hw_desc
= xstrdup(hw_desc
);
821 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
822 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
823 sizeof ods
->sw_desc
);
826 p
->sw_desc
= xstrdup(sw_desc
);
829 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
830 VLOG_WARN("truncating serial_desc, must be less than %zu "
832 sizeof ods
->serial_num
);
834 free(p
->serial_desc
);
835 p
->serial_desc
= xstrdup(serial_desc
);
838 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
839 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
840 sizeof ods
->dp_desc
);
843 p
->dp_desc
= xstrdup(dp_desc
);
848 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
849 const struct svec
*svec
)
851 struct pvconn
**pvconns
= *pvconnsp
;
852 size_t n_pvconns
= *n_pvconnsp
;
856 for (i
= 0; i
< n_pvconns
; i
++) {
857 pvconn_close(pvconns
[i
]);
861 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
863 for (i
= 0; i
< svec
->n
; i
++) {
864 const char *name
= svec
->names
[i
];
865 struct pvconn
*pvconn
;
868 error
= pvconn_open(name
, &pvconn
);
870 pvconns
[n_pvconns
++] = pvconn
;
872 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
880 *n_pvconnsp
= n_pvconns
;
886 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
888 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
892 ofproto_set_netflow(struct ofproto
*ofproto
,
893 const struct netflow_options
*nf_options
)
895 if (nf_options
&& nf_options
->collectors
.n
) {
896 if (!ofproto
->netflow
) {
897 ofproto
->netflow
= netflow_create();
899 return netflow_set_options(ofproto
->netflow
, nf_options
);
901 netflow_destroy(ofproto
->netflow
);
902 ofproto
->netflow
= NULL
;
908 ofproto_set_sflow(struct ofproto
*ofproto
,
909 const struct ofproto_sflow_options
*oso
)
911 struct ofproto_sflow
*os
= ofproto
->sflow
;
914 struct ofport
*ofport
;
916 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
917 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
918 ofproto_sflow_add_port(os
, ofport
->odp_port
,
919 netdev_get_name(ofport
->netdev
));
922 ofproto_sflow_set_options(os
, oso
);
924 ofproto_sflow_destroy(os
);
925 ofproto
->sflow
= NULL
;
930 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
932 return ofproto
->datapath_id
;
936 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
938 return !hmap_is_empty(&ofproto
->controllers
);
941 enum ofproto_fail_mode
942 ofproto_get_fail_mode(const struct ofproto
*p
)
948 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
952 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
953 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
958 ofproto_destroy(struct ofproto
*p
)
960 struct ofservice
*ofservice
, *next_ofservice
;
961 struct ofconn
*ofconn
, *next_ofconn
;
962 struct ofport
*ofport
, *next_ofport
;
969 /* Destroy fail-open and in-band early, since they touch the classifier. */
970 fail_open_destroy(p
->fail_open
);
973 in_band_destroy(p
->in_band
);
975 free(p
->extra_in_band_remotes
);
977 ofproto_flush_flows(p
);
978 classifier_destroy(&p
->cls
);
979 hmap_destroy(&p
->facets
);
981 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
982 ofconn_destroy(ofconn
);
984 hmap_destroy(&p
->controllers
);
987 netdev_monitor_destroy(p
->netdev_monitor
);
988 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
989 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
992 shash_destroy(&p
->port_by_name
);
994 switch_status_destroy(p
->switch_status
);
995 netflow_destroy(p
->netflow
);
996 ofproto_sflow_destroy(p
->sflow
);
998 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
999 ofservice_destroy(p
, ofservice
);
1001 hmap_destroy(&p
->services
);
1003 for (i
= 0; i
< p
->n_snoops
; i
++) {
1004 pvconn_close(p
->snoops
[i
]);
1008 mac_learning_destroy(p
->ml
);
1013 free(p
->serial_desc
);
1016 hmap_destroy(&p
->ports
);
1022 ofproto_run(struct ofproto
*p
)
1024 int error
= ofproto_run1(p
);
1026 error
= ofproto_run2(p
, false);
1032 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1034 if (error
== ENOBUFS
) {
1035 reinit_ports(ofproto
);
1036 } else if (!error
) {
1037 update_port(ofproto
, devname
);
1042 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1043 * means that 'ofconn' is more interesting for monitoring than a lower return
1046 snoop_preference(const struct ofconn
*ofconn
)
1048 switch (ofconn
->role
) {
1049 case NX_ROLE_MASTER
:
1056 /* Shouldn't happen. */
1061 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1062 * Connects this vconn to a controller. */
1064 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1066 struct ofconn
*ofconn
, *best
;
1068 /* Pick a controller for monitoring. */
1070 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
1071 if (ofconn
->type
== OFCONN_PRIMARY
1072 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1078 rconn_add_monitor(best
->rconn
, vconn
);
1080 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1086 ofproto_run1(struct ofproto
*p
)
1088 struct ofconn
*ofconn
, *next_ofconn
;
1089 struct ofservice
*ofservice
;
1094 if (shash_is_empty(&p
->port_by_name
)) {
1098 for (i
= 0; i
< 50; i
++) {
1101 error
= dpif_recv(p
->dpif
, &buf
);
1103 if (error
== ENODEV
) {
1104 /* Someone destroyed the datapath behind our back. The caller
1105 * better destroy us and give up, because we're just going to
1106 * spin from here on out. */
1107 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1108 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1109 dpif_name(p
->dpif
));
1115 handle_odp_msg(p
, buf
);
1118 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1119 process_port_change(p
, error
, devname
);
1121 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1122 &devname
)) != EAGAIN
) {
1123 process_port_change(p
, error
, devname
);
1127 if (time_msec() >= p
->next_in_band_update
) {
1128 update_in_band_remotes(p
);
1130 in_band_run(p
->in_band
);
1133 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1137 /* Fail-open maintenance. Do this after processing the ofconns since
1138 * fail-open checks the status of the controller rconn. */
1140 fail_open_run(p
->fail_open
);
1143 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1144 struct vconn
*vconn
;
1147 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1149 struct rconn
*rconn
;
1152 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1153 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1154 rconn_connect_unreliably(rconn
, vconn
, name
);
1157 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1158 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1159 ofservice
->burst_limit
);
1160 } else if (retval
!= EAGAIN
) {
1161 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1165 for (i
= 0; i
< p
->n_snoops
; i
++) {
1166 struct vconn
*vconn
;
1169 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1171 add_snooper(p
, vconn
);
1172 } else if (retval
!= EAGAIN
) {
1173 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1177 if (time_msec() >= p
->next_expiration
) {
1178 int delay
= ofproto_expire(p
);
1179 p
->next_expiration
= time_msec() + delay
;
1180 COVERAGE_INC(ofproto_expiration
);
1184 netflow_run(p
->netflow
);
1187 ofproto_sflow_run(p
->sflow
);
1194 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1196 /* Figure out what we need to revalidate now, if anything. */
1197 struct tag_set revalidate_set
= p
->revalidate_set
;
1198 if (p
->need_revalidate
) {
1199 revalidate_all
= true;
1202 /* Clear the revalidation flags. */
1203 tag_set_init(&p
->revalidate_set
);
1204 p
->need_revalidate
= false;
1206 /* Now revalidate if there's anything to do. */
1207 if (revalidate_all
|| !tag_set_is_empty(&revalidate_set
)) {
1208 struct facet
*facet
, *next
;
1210 HMAP_FOR_EACH_SAFE (facet
, next
, hmap_node
, &p
->facets
) {
1212 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
1213 facet_revalidate(p
, facet
);
1222 ofproto_wait(struct ofproto
*p
)
1224 struct ofservice
*ofservice
;
1225 struct ofconn
*ofconn
;
1228 dpif_recv_wait(p
->dpif
);
1229 dpif_port_poll_wait(p
->dpif
);
1230 netdev_monitor_poll_wait(p
->netdev_monitor
);
1231 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1232 ofconn_wait(ofconn
);
1235 poll_timer_wait_until(p
->next_in_band_update
);
1236 in_band_wait(p
->in_band
);
1239 fail_open_wait(p
->fail_open
);
1242 ofproto_sflow_wait(p
->sflow
);
1244 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1245 poll_immediate_wake();
1247 if (p
->need_revalidate
) {
1248 /* Shouldn't happen, but if it does just go around again. */
1249 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1250 poll_immediate_wake();
1251 } else if (p
->next_expiration
!= LLONG_MAX
) {
1252 poll_timer_wait_until(p
->next_expiration
);
1254 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1255 pvconn_wait(ofservice
->pvconn
);
1257 for (i
= 0; i
< p
->n_snoops
; i
++) {
1258 pvconn_wait(p
->snoops
[i
]);
1263 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1265 tag_set_add(&ofproto
->revalidate_set
, tag
);
1269 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1271 return &ofproto
->revalidate_set
;
1275 ofproto_is_alive(const struct ofproto
*p
)
1277 return !hmap_is_empty(&p
->controllers
);
1280 /* Deletes port number 'odp_port' from the datapath for 'ofproto'.
1282 * This is almost the same as calling dpif_port_del() directly on the
1283 * datapath, but it also makes 'ofproto' close its open netdev for the port
1284 * (if any). This makes it possible to create a new netdev of a different
1285 * type under the same name, which otherwise the netdev library would refuse
1286 * to do because of the conflict. (The netdev would eventually get closed on
1287 * the next trip through ofproto_run(), but this interface is more direct.)
1289 * Returns 0 if successful, otherwise a positive errno. */
1291 ofproto_port_del(struct ofproto
*ofproto
, uint16_t odp_port
)
1293 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1294 const char *name
= ofport
? (char *) ofport
->opp
.name
: "<unknown>";
1297 error
= dpif_port_del(ofproto
->dpif
, odp_port
);
1299 VLOG_ERR("%s: failed to remove port %"PRIu16
" (%s) interface (%s)",
1300 dpif_name(ofproto
->dpif
), odp_port
, name
, strerror(error
));
1301 } else if (ofport
) {
1302 /* 'name' is ofport->opp.name and update_port() is going to destroy
1303 * 'ofport'. Just in case update_port() refers to 'name' after it
1304 * destroys 'ofport', make a copy of it around the update_port()
1306 char *devname
= xstrdup(name
);
1307 update_port(ofproto
, devname
);
1313 /* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
1314 * true if 'odp_port' exists and should be included, false otherwise. */
1316 ofproto_port_is_floodable(struct ofproto
*ofproto
, uint16_t odp_port
)
1318 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1319 return ofport
&& !(ofport
->opp
.config
& OFPPC_NO_FLOOD
);
1323 ofproto_send_packet(struct ofproto
*p
, const struct flow
*flow
,
1324 const union ofp_action
*actions
, size_t n_actions
,
1325 const struct ofpbuf
*packet
)
1327 struct odp_actions odp_actions
;
1330 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1336 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1338 dpif_execute(p
->dpif
, odp_actions
.actions
, odp_actions
.n_actions
, packet
);
1342 /* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and
1343 * performs the 'n_actions' actions in 'actions'. The new flow will not
1346 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1347 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1348 * controllers; otherwise, it will be hidden.
1350 * The caller retains ownership of 'cls_rule' and 'actions'. */
1352 ofproto_add_flow(struct ofproto
*p
, const struct cls_rule
*cls_rule
,
1353 const union ofp_action
*actions
, size_t n_actions
)
1356 rule
= rule_create(cls_rule
, actions
, n_actions
, 0, 0, 0, false);
1357 rule_insert(p
, rule
);
1361 ofproto_delete_flow(struct ofproto
*ofproto
, const struct cls_rule
*target
)
1365 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1368 rule_remove(ofproto
, rule
);
1373 ofproto_flush_flows(struct ofproto
*ofproto
)
1375 struct facet
*facet
, *next_facet
;
1376 struct rule
*rule
, *next_rule
;
1377 struct cls_cursor cursor
;
1379 COVERAGE_INC(ofproto_flush
);
1381 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
1382 /* Mark the facet as not installed so that facet_remove() doesn't
1383 * bother trying to uninstall it. There is no point in uninstalling it
1384 * individually since we are about to blow away all the facets with
1385 * dpif_flow_flush(). */
1386 facet
->installed
= false;
1387 facet_remove(ofproto
, facet
);
1390 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
1391 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1392 rule_remove(ofproto
, rule
);
1395 dpif_flow_flush(ofproto
->dpif
);
1396 if (ofproto
->in_band
) {
1397 in_band_flushed(ofproto
->in_band
);
1399 if (ofproto
->fail_open
) {
1400 fail_open_flushed(ofproto
->fail_open
);
1405 reinit_ports(struct ofproto
*p
)
1407 struct svec devnames
;
1408 struct ofport
*ofport
;
1409 struct odp_port
*odp_ports
;
1413 COVERAGE_INC(ofproto_reinit_ports
);
1415 svec_init(&devnames
);
1416 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1417 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1419 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1420 for (i
= 0; i
< n_odp_ports
; i
++) {
1421 svec_add (&devnames
, odp_ports
[i
].devname
);
1425 svec_sort_unique(&devnames
);
1426 for (i
= 0; i
< devnames
.n
; i
++) {
1427 update_port(p
, devnames
.names
[i
]);
1429 svec_destroy(&devnames
);
1432 static struct ofport
*
1433 make_ofport(const struct odp_port
*odp_port
)
1435 struct netdev_options netdev_options
;
1436 enum netdev_flags flags
;
1437 struct ofport
*ofport
;
1438 struct netdev
*netdev
;
1441 memset(&netdev_options
, 0, sizeof netdev_options
);
1442 netdev_options
.name
= odp_port
->devname
;
1443 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1445 error
= netdev_open(&netdev_options
, &netdev
);
1447 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1448 "cannot be opened (%s)",
1449 odp_port
->devname
, odp_port
->port
,
1450 odp_port
->devname
, strerror(error
));
1454 ofport
= xmalloc(sizeof *ofport
);
1455 ofport
->netdev
= netdev
;
1456 ofport
->odp_port
= odp_port
->port
;
1457 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1458 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1459 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1460 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1461 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1463 netdev_get_flags(netdev
, &flags
);
1464 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1466 ofport
->opp
.state
= netdev_get_carrier(netdev
) ? 0 : OFPPS_LINK_DOWN
;
1468 netdev_get_features(netdev
,
1469 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1470 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1475 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1477 if (get_port(p
, odp_port
->port
)) {
1478 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1481 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1482 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1491 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1493 const struct ofp_phy_port
*a
= &a_
->opp
;
1494 const struct ofp_phy_port
*b
= &b_
->opp
;
1496 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1497 return (a
->port_no
== b
->port_no
1498 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1499 && !strcmp((char *) a
->name
, (char *) b
->name
)
1500 && a
->state
== b
->state
1501 && a
->config
== b
->config
1502 && a
->curr
== b
->curr
1503 && a
->advertised
== b
->advertised
1504 && a
->supported
== b
->supported
1505 && a
->peer
== b
->peer
);
1509 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1512 /* XXX Should limit the number of queued port status change messages. */
1513 struct ofconn
*ofconn
;
1514 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1515 struct ofp_port_status
*ops
;
1518 if (!ofconn_receives_async_msgs(ofconn
)) {
1522 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1523 ops
->reason
= reason
;
1524 ops
->desc
= ofport
->opp
;
1525 hton_ofp_phy_port(&ops
->desc
);
1526 queue_tx(b
, ofconn
, NULL
);
1531 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1533 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1535 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1536 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->odp_port
, 0));
1537 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1539 ofproto_sflow_add_port(p
->sflow
, ofport
->odp_port
, netdev_name
);
1544 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1546 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1547 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1548 shash_delete(&p
->port_by_name
,
1549 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1551 ofproto_sflow_del_port(p
->sflow
, ofport
->odp_port
);
1556 ofport_free(struct ofport
*ofport
)
1559 netdev_close(ofport
->netdev
);
1564 static struct ofport
*
1565 get_port(const struct ofproto
*ofproto
, uint16_t odp_port
)
1567 struct ofport
*port
;
1569 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1570 hash_int(odp_port
, 0), &ofproto
->ports
) {
1571 if (port
->odp_port
== odp_port
) {
1579 update_port(struct ofproto
*p
, const char *devname
)
1581 struct odp_port odp_port
;
1582 struct ofport
*old_ofport
;
1583 struct ofport
*new_ofport
;
1586 COVERAGE_INC(ofproto_update_port
);
1588 /* Query the datapath for port information. */
1589 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1591 /* Find the old ofport. */
1592 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1595 /* There's no port named 'devname' but there might be a port with
1596 * the same port number. This could happen if a port is deleted
1597 * and then a new one added in its place very quickly, or if a port
1598 * is renamed. In the former case we want to send an OFPPR_DELETE
1599 * and an OFPPR_ADD, and in the latter case we want to send a
1600 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1601 * the old port's ifindex against the new port, or perhaps less
1602 * reliably but more portably by comparing the old port's MAC
1603 * against the new port's MAC. However, this code isn't that smart
1604 * and always sends an OFPPR_MODIFY (XXX). */
1605 old_ofport
= get_port(p
, odp_port
.port
);
1607 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1608 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1609 "%s", strerror(error
));
1613 /* Create a new ofport. */
1614 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1616 /* Eliminate a few pathological cases. */
1617 if (!old_ofport
&& !new_ofport
) {
1619 } else if (old_ofport
&& new_ofport
) {
1620 /* Most of the 'config' bits are OpenFlow soft state, but
1621 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1622 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1623 * leaves the other bits 0.) */
1624 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1626 if (ofport_equal(old_ofport
, new_ofport
)) {
1627 /* False alarm--no change. */
1628 ofport_free(new_ofport
);
1633 /* Now deal with the normal cases. */
1635 ofport_remove(p
, old_ofport
);
1638 ofport_install(p
, new_ofport
);
1640 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1641 (!old_ofport
? OFPPR_ADD
1642 : !new_ofport
? OFPPR_DELETE
1644 ofport_free(old_ofport
);
1648 init_ports(struct ofproto
*p
)
1650 struct odp_port
*ports
;
1655 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1660 for (i
= 0; i
< n_ports
; i
++) {
1661 const struct odp_port
*odp_port
= &ports
[i
];
1662 if (!ofport_conflicts(p
, odp_port
)) {
1663 struct ofport
*ofport
= make_ofport(odp_port
);
1665 ofport_install(p
, ofport
);
1673 static struct ofconn
*
1674 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1676 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1677 ofconn
->ofproto
= p
;
1678 list_push_back(&p
->all_conns
, &ofconn
->node
);
1679 ofconn
->rconn
= rconn
;
1680 ofconn
->type
= type
;
1681 ofconn
->flow_format
= NXFF_OPENFLOW10
;
1682 ofconn
->role
= NX_ROLE_OTHER
;
1683 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1684 ofconn
->pktbuf
= NULL
;
1685 ofconn
->miss_send_len
= 0;
1686 ofconn
->reply_counter
= rconn_packet_counter_create ();
1691 ofconn_destroy(struct ofconn
*ofconn
)
1693 if (ofconn
->type
== OFCONN_PRIMARY
) {
1694 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1696 discovery_destroy(ofconn
->discovery
);
1698 list_remove(&ofconn
->node
);
1699 switch_status_unregister(ofconn
->ss
);
1700 rconn_destroy(ofconn
->rconn
);
1701 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1702 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1703 pktbuf_destroy(ofconn
->pktbuf
);
1708 ofconn_run(struct ofconn
*ofconn
)
1710 struct ofproto
*p
= ofconn
->ofproto
;
1714 if (ofconn
->discovery
) {
1715 char *controller_name
;
1716 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1717 discovery_question_connectivity(ofconn
->discovery
);
1719 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1720 if (controller_name
) {
1721 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1722 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1725 rconn_disconnect(ofconn
->rconn
);
1730 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1731 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1734 rconn_run(ofconn
->rconn
);
1736 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1737 /* Limit the number of iterations to prevent other tasks from
1739 for (iteration
= 0; iteration
< 50; iteration
++) {
1740 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1745 fail_open_maybe_recover(p
->fail_open
);
1747 handle_openflow(ofconn
, of_msg
);
1748 ofpbuf_delete(of_msg
);
1752 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1753 ofconn_destroy(ofconn
);
1758 ofconn_wait(struct ofconn
*ofconn
)
1762 if (ofconn
->discovery
) {
1763 discovery_wait(ofconn
->discovery
);
1765 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1766 pinsched_wait(ofconn
->schedulers
[i
]);
1768 rconn_run_wait(ofconn
->rconn
);
1769 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1770 rconn_recv_wait(ofconn
->rconn
);
1772 COVERAGE_INC(ofproto_ofconn_stuck
);
1776 /* Returns true if 'ofconn' should receive asynchronous messages. */
1778 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1780 if (ofconn
->type
== OFCONN_PRIMARY
) {
1781 /* Primary controllers always get asynchronous messages unless they
1782 * have configured themselves as "slaves". */
1783 return ofconn
->role
!= NX_ROLE_SLAVE
;
1785 /* Service connections don't get asynchronous messages unless they have
1786 * explicitly asked for them by setting a nonzero miss send length. */
1787 return ofconn
->miss_send_len
> 0;
1791 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1792 * and 'target', suitable for use in log messages for identifying the
1795 * The name is dynamically allocated. The caller should free it (with free())
1796 * when it is no longer needed. */
1798 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1800 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1804 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1808 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1809 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1813 *s
= pinsched_create(rate
, burst
,
1814 ofconn
->ofproto
->switch_status
);
1816 pinsched_set_limits(*s
, rate
, burst
);
1819 pinsched_destroy(*s
);
1826 ofservice_reconfigure(struct ofservice
*ofservice
,
1827 const struct ofproto_controller
*c
)
1829 ofservice
->probe_interval
= c
->probe_interval
;
1830 ofservice
->rate_limit
= c
->rate_limit
;
1831 ofservice
->burst_limit
= c
->burst_limit
;
1834 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1835 * positive errno value. */
1837 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1839 struct ofservice
*ofservice
;
1840 struct pvconn
*pvconn
;
1843 error
= pvconn_open(c
->target
, &pvconn
);
1848 ofservice
= xzalloc(sizeof *ofservice
);
1849 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1850 hash_string(c
->target
, 0));
1851 ofservice
->pvconn
= pvconn
;
1853 ofservice_reconfigure(ofservice
, c
);
1859 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1861 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1862 pvconn_close(ofservice
->pvconn
);
1866 /* Finds and returns the ofservice within 'ofproto' that has the given
1867 * 'target', or a null pointer if none exists. */
1868 static struct ofservice
*
1869 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1871 struct ofservice
*ofservice
;
1873 HMAP_FOR_EACH_WITH_HASH (ofservice
, node
, hash_string(target
, 0),
1874 &ofproto
->services
) {
1875 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1882 /* Returns true if 'rule' should be hidden from the controller.
1884 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
1885 * (e.g. by in-band control) and are intentionally hidden from the
1888 rule_is_hidden(const struct rule
*rule
)
1890 return rule
->cr
.priority
> UINT16_MAX
;
1893 /* Creates and returns a new rule initialized as specified.
1895 * The caller is responsible for inserting the rule into the classifier (with
1896 * rule_insert()). */
1897 static struct rule
*
1898 rule_create(const struct cls_rule
*cls_rule
,
1899 const union ofp_action
*actions
, size_t n_actions
,
1900 uint16_t idle_timeout
, uint16_t hard_timeout
,
1901 ovs_be64 flow_cookie
, bool send_flow_removed
)
1903 struct rule
*rule
= xzalloc(sizeof *rule
);
1904 rule
->cr
= *cls_rule
;
1905 rule
->idle_timeout
= idle_timeout
;
1906 rule
->hard_timeout
= hard_timeout
;
1907 rule
->flow_cookie
= flow_cookie
;
1908 rule
->used
= rule
->created
= time_msec();
1909 rule
->send_flow_removed
= send_flow_removed
;
1910 list_init(&rule
->facets
);
1911 if (n_actions
> 0) {
1912 rule
->n_actions
= n_actions
;
1913 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1919 static struct rule
*
1920 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1922 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1926 rule_free(struct rule
*rule
)
1928 free(rule
->actions
);
1932 /* Destroys 'rule' and iterates through all of its facets and revalidates them,
1933 * destroying any that no longer has a rule (which is probably all of them).
1935 * The caller must have already removed 'rule' from the classifier. */
1937 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1939 struct facet
*facet
, *next_facet
;
1940 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
1941 facet_revalidate(ofproto
, facet
);
1946 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
1947 * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't
1950 rule_has_out_port(const struct rule
*rule
, ovs_be16 out_port
)
1952 const union ofp_action
*oa
;
1953 struct actions_iterator i
;
1955 if (out_port
== htons(OFPP_NONE
)) {
1958 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1959 oa
= actions_next(&i
)) {
1960 if (action_outputs_to_port(oa
, out_port
)) {
1967 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
1968 * 'packet', which arrived on 'in_port'.
1970 * Takes ownership of 'packet'. */
1972 execute_odp_actions(struct ofproto
*ofproto
, uint16_t in_port
,
1973 const union odp_action
*actions
, size_t n_actions
,
1974 struct ofpbuf
*packet
)
1976 if (n_actions
== 1 && actions
[0].type
== ODPAT_CONTROLLER
) {
1977 /* As an optimization, avoid a round-trip from userspace to kernel to
1978 * userspace. This also avoids possibly filling up kernel packet
1979 * buffers along the way. */
1980 struct odp_msg
*msg
;
1982 msg
= ofpbuf_push_uninit(packet
, sizeof *msg
);
1983 msg
->type
= _ODPL_ACTION_NR
;
1984 msg
->length
= sizeof(struct odp_msg
) + packet
->size
;
1985 msg
->port
= in_port
;
1987 msg
->arg
= actions
[0].controller
.arg
;
1989 send_packet_in(ofproto
, packet
);
1995 error
= dpif_execute(ofproto
->dpif
, actions
, n_actions
, packet
);
1996 ofpbuf_delete(packet
);
2001 /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
2002 * statistics appropriately. 'packet' must have at least sizeof(struct
2003 * ofp_packet_in) bytes of headroom.
2005 * For correct results, 'packet' must actually be in 'facet''s flow; that is,
2006 * applying flow_extract() to 'packet' would yield the same flow as
2009 * 'facet' must have accurately composed ODP actions; that is, it must not be
2010 * in need of revalidation.
2012 * Takes ownership of 'packet'. */
2014 facet_execute(struct ofproto
*ofproto
, struct facet
*facet
,
2015 struct ofpbuf
*packet
)
2017 struct odp_flow_stats stats
;
2019 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2021 flow_extract_stats(&facet
->flow
, packet
, &stats
);
2022 if (execute_odp_actions(ofproto
, facet
->flow
.in_port
,
2023 facet
->actions
, facet
->n_actions
, packet
)) {
2024 facet_update_stats(ofproto
, facet
, &stats
);
2025 facet
->used
= time_msec();
2026 netflow_flow_update_time(ofproto
->netflow
,
2027 &facet
->nf_flow
, facet
->used
);
2031 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
2032 * statistics (or the statistics for one of its facets) appropriately.
2033 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
2035 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
2036 * with statistics for 'packet' either way.
2038 * Takes ownership of 'packet'. */
2040 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
, uint16_t in_port
,
2041 struct ofpbuf
*packet
)
2043 struct facet
*facet
;
2044 struct odp_actions a
;
2048 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2050 flow_extract(packet
, 0, in_port
, &flow
);
2052 /* First look for a related facet. If we find one, account it to that. */
2053 facet
= facet_lookup_valid(ofproto
, &flow
);
2054 if (facet
&& facet
->rule
== rule
) {
2055 facet_execute(ofproto
, facet
, packet
);
2059 /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
2060 * create a new facet for it and use that. */
2061 if (rule_lookup(ofproto
, &flow
) == rule
) {
2062 facet
= facet_create(ofproto
, rule
, &flow
, packet
);
2063 facet_execute(ofproto
, facet
, packet
);
2064 facet_install(ofproto
, facet
, true);
2068 /* We can't account anything to a facet. If we were to try, then that
2069 * facet would have a non-matching rule, busting our invariants. */
2070 if (xlate_actions(rule
->actions
, rule
->n_actions
, &flow
, ofproto
,
2071 packet
, &a
, NULL
, 0, NULL
)) {
2072 ofpbuf_delete(packet
);
2075 size
= packet
->size
;
2076 if (execute_odp_actions(ofproto
, in_port
,
2077 a
.actions
, a
.n_actions
, packet
)) {
2078 rule
->used
= time_msec();
2079 rule
->packet_count
++;
2080 rule
->byte_count
+= size
;
2084 /* Inserts 'rule' into 'p''s flow table. */
2086 rule_insert(struct ofproto
*p
, struct rule
*rule
)
2088 struct rule
*displaced_rule
;
2090 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
2091 if (displaced_rule
) {
2092 rule_destroy(p
, displaced_rule
);
2094 p
->need_revalidate
= true;
2097 /* Creates and returns a new facet within 'ofproto' owned by 'rule', given a
2098 * 'flow' and an example 'packet' within that flow.
2100 * The caller must already have determined that no facet with an identical
2101 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
2102 * 'ofproto''s classifier table. */
2103 static struct facet
*
2104 facet_create(struct ofproto
*ofproto
, struct rule
*rule
,
2105 const struct flow
*flow
, const struct ofpbuf
*packet
)
2107 struct facet
*facet
;
2109 facet
= xzalloc(sizeof *facet
);
2110 facet
->used
= time_msec();
2111 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, flow_hash(flow
, 0));
2112 list_push_back(&rule
->facets
, &facet
->list_node
);
2114 facet
->flow
= *flow
;
2115 netflow_flow_init(&facet
->nf_flow
);
2116 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
2118 facet_make_actions(ofproto
, facet
, packet
);
2124 facet_free(struct facet
*facet
)
2126 free(facet
->actions
);
2130 /* Remove 'rule' from 'ofproto' and free up the associated memory:
2132 * - Removes 'rule' from the classifier.
2134 * - If 'rule' has facets, revalidates them (and possibly uninstalls and
2135 * destroys them), via rule_destroy().
2138 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2140 COVERAGE_INC(ofproto_del_rule
);
2141 ofproto
->need_revalidate
= true;
2142 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2143 rule_destroy(ofproto
, rule
);
2146 /* Remove 'facet' from 'ofproto' and free up the associated memory:
2148 * - If 'facet' was installed in the datapath, uninstalls it and updates its
2149 * rule's statistics, via facet_uninstall().
2151 * - Removes 'facet' from its rule and from ofproto->facets.
2154 facet_remove(struct ofproto
*ofproto
, struct facet
*facet
)
2156 facet_uninstall(ofproto
, facet
);
2157 facet_flush_stats(ofproto
, facet
);
2158 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
2159 list_remove(&facet
->list_node
);
2163 /* Composes the ODP actions for 'facet' based on its rule's actions. */
2165 facet_make_actions(struct ofproto
*p
, struct facet
*facet
,
2166 const struct ofpbuf
*packet
)
2168 const struct rule
*rule
= facet
->rule
;
2169 struct odp_actions a
;
2172 xlate_actions(rule
->actions
, rule
->n_actions
, &facet
->flow
, p
,
2173 packet
, &a
, &facet
->tags
, &facet
->may_install
,
2174 &facet
->nf_flow
.output_iface
);
2176 actions_len
= a
.n_actions
* sizeof *a
.actions
;
2177 if (facet
->n_actions
!= a
.n_actions
2178 || memcmp(facet
->actions
, a
.actions
, actions_len
)) {
2179 free(facet
->actions
);
2180 facet
->n_actions
= a
.n_actions
;
2181 facet
->actions
= xmemdup(a
.actions
, actions_len
);
2186 facet_put__(struct ofproto
*ofproto
, struct facet
*facet
, int flags
,
2187 struct odp_flow_put
*put
)
2189 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
2190 odp_flow_key_from_flow(&put
->flow
.key
, &facet
->flow
);
2191 put
->flow
.actions
= facet
->actions
;
2192 put
->flow
.n_actions
= facet
->n_actions
;
2193 put
->flow
.flags
= 0;
2195 return dpif_flow_put(ofproto
->dpif
, put
);
2198 /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
2199 * 'zero_stats' is true, clears any existing statistics from the datapath for
2202 facet_install(struct ofproto
*p
, struct facet
*facet
, bool zero_stats
)
2204 if (facet
->may_install
) {
2205 struct odp_flow_put put
;
2208 flags
= ODPPF_CREATE
| ODPPF_MODIFY
;
2210 flags
|= ODPPF_ZERO_STATS
;
2212 if (!facet_put__(p
, facet
, flags
, &put
)) {
2213 facet
->installed
= true;
2218 /* Ensures that the bytes in 'facet', plus 'extra_bytes', have been passed up
2219 * to the accounting hook function in the ofhooks structure. */
2221 facet_account(struct ofproto
*ofproto
,
2222 struct facet
*facet
, uint64_t extra_bytes
)
2224 uint64_t total_bytes
= facet
->byte_count
+ extra_bytes
;
2226 if (ofproto
->ofhooks
->account_flow_cb
2227 && total_bytes
> facet
->accounted_bytes
)
2229 ofproto
->ofhooks
->account_flow_cb(
2230 &facet
->flow
, facet
->tags
, facet
->actions
, facet
->n_actions
,
2231 total_bytes
- facet
->accounted_bytes
, ofproto
->aux
);
2232 facet
->accounted_bytes
= total_bytes
;
2236 /* If 'rule' is installed in the datapath, uninstalls it. */
2238 facet_uninstall(struct ofproto
*p
, struct facet
*facet
)
2240 if (facet
->installed
) {
2241 struct odp_flow odp_flow
;
2243 odp_flow_key_from_flow(&odp_flow
.key
, &facet
->flow
);
2244 odp_flow
.actions
= NULL
;
2245 odp_flow
.n_actions
= 0;
2247 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2248 facet_update_stats(p
, facet
, &odp_flow
.stats
);
2250 facet
->installed
= false;
2254 /* Returns true if the only action for 'facet' is to send to the controller.
2255 * (We don't report NetFlow expiration messages for such facets because they
2256 * are just part of the control logic for the network, not real traffic). */
2258 facet_is_controller_flow(struct facet
*facet
)
2261 && facet
->rule
->n_actions
== 1
2262 && action_outputs_to_port(&facet
->rule
->actions
[0],
2263 htons(OFPP_CONTROLLER
)));
2266 /* Folds all of 'facet''s statistics into its rule. Also updates the
2267 * accounting ofhook and emits a NetFlow expiration if appropriate. */
2269 facet_flush_stats(struct ofproto
*ofproto
, struct facet
*facet
)
2271 facet_account(ofproto
, facet
, 0);
2273 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
2274 struct ofexpired expired
;
2275 expired
.flow
= facet
->flow
;
2276 expired
.packet_count
= facet
->packet_count
;
2277 expired
.byte_count
= facet
->byte_count
;
2278 expired
.used
= facet
->used
;
2279 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
2282 facet
->rule
->packet_count
+= facet
->packet_count
;
2283 facet
->rule
->byte_count
+= facet
->byte_count
;
2285 /* Reset counters to prevent double counting if 'facet' ever gets
2287 facet
->packet_count
= 0;
2288 facet
->byte_count
= 0;
2289 facet
->accounted_bytes
= 0;
2291 netflow_flow_clear(&facet
->nf_flow
);
2294 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2295 * Returns it if found, otherwise a null pointer.
2297 * The returned facet might need revalidation; use facet_lookup_valid()
2298 * instead if that is important. */
2299 static struct facet
*
2300 facet_find(struct ofproto
*ofproto
, const struct flow
*flow
)
2302 struct facet
*facet
;
2304 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, flow_hash(flow
, 0),
2306 if (flow_equal(flow
, &facet
->flow
)) {
2314 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2315 * Returns it if found, otherwise a null pointer.
2317 * The returned facet is guaranteed to be valid. */
2318 static struct facet
*
2319 facet_lookup_valid(struct ofproto
*ofproto
, const struct flow
*flow
)
2321 struct facet
*facet
= facet_find(ofproto
, flow
);
2323 /* The facet we found might not be valid, since we could be in need of
2324 * revalidation. If it is not valid, don't return it. */
2326 && ofproto
->need_revalidate
2327 && !facet_revalidate(ofproto
, facet
)) {
2328 COVERAGE_INC(ofproto_invalidated
);
2335 /* Re-searches 'ofproto''s classifier for a rule matching 'facet':
2337 * - If the rule found is different from 'facet''s current rule, moves
2338 * 'facet' to the new rule and recompiles its actions.
2340 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
2341 * where it is and recompiles its actions anyway.
2343 * - If there is none, destroys 'facet'.
2345 * Returns true if 'facet' still exists, false if it has been destroyed. */
2347 facet_revalidate(struct ofproto
*ofproto
, struct facet
*facet
)
2349 struct rule
*new_rule
;
2350 struct odp_actions a
;
2352 uint16_t new_nf_output_iface
;
2353 bool actions_changed
;
2355 COVERAGE_INC(facet_revalidate
);
2357 /* Determine the new rule. */
2358 new_rule
= rule_lookup(ofproto
, &facet
->flow
);
2360 /* No new rule, so delete the facet. */
2361 facet_remove(ofproto
, facet
);
2365 /* Calculate new ODP actions.
2367 * We are very cautious about actually modifying 'facet' state at this
2368 * point, because we might need to, e.g., emit a NetFlow expiration and, if
2369 * so, we need to have the old state around to properly compose it. */
2370 xlate_actions(new_rule
->actions
, new_rule
->n_actions
, &facet
->flow
,
2371 ofproto
, NULL
, &a
, &facet
->tags
, &facet
->may_install
,
2372 &new_nf_output_iface
);
2373 actions_len
= a
.n_actions
* sizeof *a
.actions
;
2374 actions_changed
= (facet
->n_actions
!= a
.n_actions
2375 || memcmp(facet
->actions
, a
.actions
, actions_len
));
2377 /* If the ODP actions changed or the installability changed, then we need
2378 * to talk to the datapath. */
2379 if (actions_changed
|| facet
->may_install
!= facet
->installed
) {
2380 if (facet
->may_install
) {
2381 struct odp_flow_put put
;
2383 memset(&put
.flow
.stats
, 0, sizeof put
.flow
.stats
);
2384 odp_flow_key_from_flow(&put
.flow
.key
, &facet
->flow
);
2385 put
.flow
.actions
= a
.actions
;
2386 put
.flow
.n_actions
= a
.n_actions
;
2388 put
.flags
= ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
;
2389 dpif_flow_put(ofproto
->dpif
, &put
);
2391 facet_update_stats(ofproto
, facet
, &put
.flow
.stats
);
2393 facet_uninstall(ofproto
, facet
);
2396 /* The datapath flow is gone or has zeroed stats, so push stats out of
2397 * 'facet' into 'rule'. */
2398 facet_flush_stats(ofproto
, facet
);
2401 /* Update 'facet' now that we've taken care of all the old state. */
2402 facet
->nf_flow
.output_iface
= new_nf_output_iface
;
2403 if (actions_changed
) {
2404 free(facet
->actions
);
2405 facet
->n_actions
= a
.n_actions
;
2406 facet
->actions
= xmemdup(a
.actions
, actions_len
);
2408 if (facet
->rule
!= new_rule
) {
2409 COVERAGE_INC(facet_changed_rule
);
2410 list_remove(&facet
->list_node
);
2411 list_push_back(&new_rule
->facets
, &facet
->list_node
);
2412 facet
->rule
= new_rule
;
2413 facet
->used
= new_rule
->created
;
2420 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2421 struct rconn_packet_counter
*counter
)
2423 update_openflow_length(msg
);
2424 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2430 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2433 struct ofpbuf
*buf
= make_ofp_error_msg(error
, oh
);
2435 COVERAGE_INC(ofproto_error
);
2436 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2441 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2443 opp
->port_no
= htons(opp
->port_no
);
2444 opp
->config
= htonl(opp
->config
);
2445 opp
->state
= htonl(opp
->state
);
2446 opp
->curr
= htonl(opp
->curr
);
2447 opp
->advertised
= htonl(opp
->advertised
);
2448 opp
->supported
= htonl(opp
->supported
);
2449 opp
->peer
= htonl(opp
->peer
);
2453 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2455 struct ofp_header
*rq
= oh
;
2456 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
2461 handle_features_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2463 struct ofp_switch_features
*osf
;
2465 struct ofport
*port
;
2467 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2468 osf
->datapath_id
= htonll(ofconn
->ofproto
->datapath_id
);
2469 osf
->n_buffers
= htonl(pktbuf_capacity());
2471 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2472 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2473 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2474 (1u << OFPAT_SET_VLAN_VID
) |
2475 (1u << OFPAT_SET_VLAN_PCP
) |
2476 (1u << OFPAT_STRIP_VLAN
) |
2477 (1u << OFPAT_SET_DL_SRC
) |
2478 (1u << OFPAT_SET_DL_DST
) |
2479 (1u << OFPAT_SET_NW_SRC
) |
2480 (1u << OFPAT_SET_NW_DST
) |
2481 (1u << OFPAT_SET_NW_TOS
) |
2482 (1u << OFPAT_SET_TP_SRC
) |
2483 (1u << OFPAT_SET_TP_DST
) |
2484 (1u << OFPAT_ENQUEUE
));
2486 HMAP_FOR_EACH (port
, hmap_node
, &ofconn
->ofproto
->ports
) {
2487 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2490 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2495 handle_get_config_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2498 struct ofp_switch_config
*osc
;
2502 /* Figure out flags. */
2503 dpif_get_drop_frags(ofconn
->ofproto
->dpif
, &drop_frags
);
2504 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2507 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2508 osc
->flags
= htons(flags
);
2509 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2510 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2516 handle_set_config(struct ofconn
*ofconn
, struct ofp_switch_config
*osc
)
2521 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
2525 flags
= ntohs(osc
->flags
);
2527 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2528 switch (flags
& OFPC_FRAG_MASK
) {
2529 case OFPC_FRAG_NORMAL
:
2530 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, false);
2532 case OFPC_FRAG_DROP
:
2533 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, true);
2536 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2542 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2548 add_controller_action(struct odp_actions
*actions
, uint16_t max_len
)
2550 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
2551 a
->controller
.arg
= max_len
;
2554 struct action_xlate_ctx
{
2556 struct flow flow
; /* Flow to which these actions correspond. */
2557 int recurse
; /* Recursion level, via xlate_table_action. */
2558 struct ofproto
*ofproto
;
2559 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2560 * null pointer if we are revalidating
2561 * without a packet to refer to. */
2564 struct odp_actions
*out
; /* Datapath actions. */
2565 tag_type tags
; /* Tags associated with OFPP_NORMAL actions. */
2566 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2567 * be reassessed for every packet. */
2568 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2571 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2572 * flow translation. */
2573 #define MAX_RESUBMIT_RECURSION 8
2575 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2576 struct action_xlate_ctx
*ctx
);
2579 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2581 const struct ofport
*ofport
= get_port(ctx
->ofproto
, port
);
2584 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2585 /* Forwarding disabled on port. */
2590 * We don't have an ofport record for this port, but it doesn't hurt to
2591 * allow forwarding to it anyhow. Maybe such a port will appear later
2592 * and we're pre-populating the flow table.
2596 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2597 ctx
->nf_output_iface
= port
;
2600 static struct rule
*
2601 rule_lookup(struct ofproto
*ofproto
, const struct flow
*flow
)
2603 return rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2607 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2609 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2610 uint16_t old_in_port
;
2613 /* Look up a flow with 'in_port' as the input port. Then restore the
2614 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2615 * have surprising behavior). */
2616 old_in_port
= ctx
->flow
.in_port
;
2617 ctx
->flow
.in_port
= in_port
;
2618 rule
= rule_lookup(ctx
->ofproto
, &ctx
->flow
);
2619 ctx
->flow
.in_port
= old_in_port
;
2623 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2627 struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2629 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2630 MAX_RESUBMIT_RECURSION
);
2635 flood_packets(struct ofproto
*ofproto
, uint16_t odp_in_port
, uint32_t mask
,
2636 uint16_t *nf_output_iface
, struct odp_actions
*actions
)
2638 struct ofport
*ofport
;
2640 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
2641 uint16_t odp_port
= ofport
->odp_port
;
2642 if (odp_port
!= odp_in_port
&& !(ofport
->opp
.config
& mask
)) {
2643 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= odp_port
;
2646 *nf_output_iface
= NF_OUT_FLOOD
;
2650 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2651 uint16_t port
, uint16_t max_len
)
2654 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2656 ctx
->nf_output_iface
= NF_OUT_DROP
;
2660 add_output_action(ctx
, ctx
->flow
.in_port
);
2663 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2666 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2667 ctx
->out
, &ctx
->tags
,
2668 &ctx
->nf_output_iface
,
2669 ctx
->ofproto
->aux
)) {
2670 COVERAGE_INC(ofproto_uninstallable
);
2671 ctx
->may_set_up_flow
= false;
2675 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, OFPPC_NO_FLOOD
,
2676 &ctx
->nf_output_iface
, ctx
->out
);
2679 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, 0,
2680 &ctx
->nf_output_iface
, ctx
->out
);
2682 case OFPP_CONTROLLER
:
2683 add_controller_action(ctx
->out
, max_len
);
2686 add_output_action(ctx
, ODPP_LOCAL
);
2689 odp_port
= ofp_port_to_odp_port(port
);
2690 if (odp_port
!= ctx
->flow
.in_port
) {
2691 add_output_action(ctx
, odp_port
);
2696 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2697 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2698 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2699 ctx
->nf_output_iface
= prev_nf_output_iface
;
2700 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2701 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2702 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2707 xlate_output_action(struct action_xlate_ctx
*ctx
,
2708 const struct ofp_action_output
*oao
)
2710 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2713 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2714 * optimization, because we're going to add another action that sets the
2715 * priority immediately after, or because there are no actions following the
2718 remove_pop_action(struct action_xlate_ctx
*ctx
)
2720 size_t n
= ctx
->out
->n_actions
;
2721 if (n
> 0 && ctx
->out
->actions
[n
- 1].type
== ODPAT_POP_PRIORITY
) {
2722 ctx
->out
->n_actions
--;
2727 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2728 const struct ofp_action_enqueue
*oae
)
2730 uint16_t ofp_port
, odp_port
;
2734 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2737 /* Fall back to ordinary output action. */
2738 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2742 /* Figure out ODP output port. */
2743 ofp_port
= ntohs(oae
->port
);
2744 if (ofp_port
!= OFPP_IN_PORT
) {
2745 odp_port
= ofp_port_to_odp_port(ofp_port
);
2747 odp_port
= ctx
->flow
.in_port
;
2750 /* Add ODP actions. */
2751 remove_pop_action(ctx
);
2752 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2754 add_output_action(ctx
, odp_port
);
2755 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2757 /* Update NetFlow output port. */
2758 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2759 ctx
->nf_output_iface
= odp_port
;
2760 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2761 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2766 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
2767 const struct nx_action_set_queue
*nasq
)
2772 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
2775 /* Couldn't translate queue to a priority, so ignore. A warning
2776 * has already been logged. */
2780 remove_pop_action(ctx
);
2781 odp_actions_add(ctx
->out
, ODPAT_SET_PRIORITY
)->priority
.priority
2786 xlate_set_dl_tci(struct action_xlate_ctx
*ctx
)
2788 ovs_be16 dl_vlan
= ctx
->flow
.dl_vlan
;
2789 uint8_t dl_vlan_pcp
= ctx
->flow
.dl_vlan_pcp
;
2791 if (dl_vlan
== htons(OFP_VLAN_NONE
)) {
2792 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2794 union odp_action
*oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_TCI
);
2795 oa
->dl_tci
.tci
= htons(ntohs(dl_vlan
& htons(VLAN_VID_MASK
))
2796 | (dl_vlan_pcp
<< VLAN_PCP_SHIFT
));
2801 xlate_reg_move_action(struct action_xlate_ctx
*ctx
,
2802 const struct nx_action_reg_move
*narm
)
2804 ovs_be16 old_vlan
= ctx
->flow
.dl_vlan
;
2805 uint8_t old_pcp
= ctx
->flow
.dl_vlan_pcp
;
2807 nxm_execute_reg_move(narm
, &ctx
->flow
);
2809 if (ctx
->flow
.dl_vlan
!= old_vlan
|| ctx
->flow
.dl_vlan_pcp
!= old_pcp
) {
2810 xlate_set_dl_tci(ctx
);
2815 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2816 const struct nx_action_header
*nah
)
2818 const struct nx_action_resubmit
*nar
;
2819 const struct nx_action_set_tunnel
*nast
;
2820 const struct nx_action_set_queue
*nasq
;
2821 union odp_action
*oa
;
2822 int subtype
= ntohs(nah
->subtype
);
2824 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2826 case NXAST_RESUBMIT
:
2827 nar
= (const struct nx_action_resubmit
*) nah
;
2828 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2831 case NXAST_SET_TUNNEL
:
2832 nast
= (const struct nx_action_set_tunnel
*) nah
;
2833 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2834 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2837 case NXAST_DROP_SPOOFED_ARP
:
2838 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_ARP
)) {
2839 odp_actions_add(ctx
->out
, ODPAT_DROP_SPOOFED_ARP
);
2843 case NXAST_SET_QUEUE
:
2844 nasq
= (const struct nx_action_set_queue
*) nah
;
2845 xlate_set_queue_action(ctx
, nasq
);
2848 case NXAST_POP_QUEUE
:
2849 odp_actions_add(ctx
->out
, ODPAT_POP_PRIORITY
);
2852 case NXAST_REG_MOVE
:
2853 xlate_reg_move_action(ctx
, (const struct nx_action_reg_move
*) nah
);
2856 case NXAST_REG_LOAD
:
2857 nxm_execute_reg_load((const struct nx_action_reg_load
*) nah
,
2861 /* Nothing to do. */
2864 /* If you add a new action here that modifies flow data, don't forget to
2865 * update the flow key in ctx->flow at the same time. */
2868 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2874 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2875 struct action_xlate_ctx
*ctx
)
2877 struct actions_iterator iter
;
2878 const union ofp_action
*ia
;
2879 const struct ofport
*port
;
2881 port
= get_port(ctx
->ofproto
, ctx
->flow
.in_port
);
2882 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2883 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
2884 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2885 /* Drop this flow. */
2889 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2890 uint16_t type
= ntohs(ia
->type
);
2891 union odp_action
*oa
;
2895 xlate_output_action(ctx
, &ia
->output
);
2898 case OFPAT_SET_VLAN_VID
:
2899 ctx
->flow
.dl_vlan
= ia
->vlan_vid
.vlan_vid
;
2900 xlate_set_dl_tci(ctx
);
2903 case OFPAT_SET_VLAN_PCP
:
2904 ctx
->flow
.dl_vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2905 xlate_set_dl_tci(ctx
);
2908 case OFPAT_STRIP_VLAN
:
2909 ctx
->flow
.dl_vlan
= htons(OFP_VLAN_NONE
);
2910 ctx
->flow
.dl_vlan_pcp
= 0;
2911 xlate_set_dl_tci(ctx
);
2914 case OFPAT_SET_DL_SRC
:
2915 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2916 memcpy(oa
->dl_addr
.dl_addr
,
2917 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2918 memcpy(ctx
->flow
.dl_src
,
2919 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2922 case OFPAT_SET_DL_DST
:
2923 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2924 memcpy(oa
->dl_addr
.dl_addr
,
2925 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2926 memcpy(ctx
->flow
.dl_dst
,
2927 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2930 case OFPAT_SET_NW_SRC
:
2931 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2932 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2935 case OFPAT_SET_NW_DST
:
2936 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2937 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2940 case OFPAT_SET_NW_TOS
:
2941 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2942 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2945 case OFPAT_SET_TP_SRC
:
2946 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2947 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2950 case OFPAT_SET_TP_DST
:
2951 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2952 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2956 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2960 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
2964 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2971 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2972 const struct flow
*flow
, struct ofproto
*ofproto
,
2973 const struct ofpbuf
*packet
,
2974 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2975 uint16_t *nf_output_iface
)
2977 struct action_xlate_ctx ctx
;
2979 COVERAGE_INC(ofproto_ofp2odp
);
2980 odp_actions_init(out
);
2983 ctx
.ofproto
= ofproto
;
2984 ctx
.packet
= packet
;
2987 ctx
.may_set_up_flow
= true;
2988 ctx
.nf_output_iface
= NF_OUT_DROP
;
2989 do_xlate_actions(in
, n_in
, &ctx
);
2990 remove_pop_action(&ctx
);
2992 /* Check with in-band control to see if we're allowed to set up this
2994 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2995 ctx
.may_set_up_flow
= false;
3001 if (may_set_up_flow
) {
3002 *may_set_up_flow
= ctx
.may_set_up_flow
;
3004 if (nf_output_iface
) {
3005 *nf_output_iface
= ctx
.nf_output_iface
;
3007 if (odp_actions_overflow(out
)) {
3008 COVERAGE_INC(odp_overflow
);
3009 odp_actions_init(out
);
3010 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
3015 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3016 * error message code (composed with ofp_mkerr()) for the caller to propagate
3017 * upward. Otherwise, returns 0.
3019 * The log message mentions 'msg_type'. */
3021 reject_slave_controller(struct ofconn
*ofconn
, const const char *msg_type
)
3023 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
3024 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3025 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
3028 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3035 handle_packet_out(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3037 struct ofproto
*p
= ofconn
->ofproto
;
3038 struct ofp_packet_out
*opo
;
3039 struct ofpbuf payload
, *buffer
;
3040 union ofp_action
*ofp_actions
;
3041 struct odp_actions odp_actions
;
3042 struct ofpbuf request
;
3044 size_t n_ofp_actions
;
3048 COVERAGE_INC(ofproto_packet_out
);
3050 error
= reject_slave_controller(ofconn
, "OFPT_PACKET_OUT");
3055 /* Get ofp_packet_out. */
3057 request
.size
= ntohs(oh
->length
);
3058 opo
= ofpbuf_try_pull(&request
, offsetof(struct ofp_packet_out
, actions
));
3060 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3064 error
= ofputil_pull_actions(&request
, ntohs(opo
->actions_len
),
3065 &ofp_actions
, &n_ofp_actions
);
3071 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
3072 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
3074 if (error
|| !buffer
) {
3083 /* Extract flow, check actions. */
3084 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)),
3086 error
= validate_actions(ofp_actions
, n_ofp_actions
, &flow
, p
->max_ports
);
3092 error
= xlate_actions(ofp_actions
, n_ofp_actions
, &flow
, p
, &payload
,
3093 &odp_actions
, NULL
, NULL
, NULL
);
3095 dpif_execute(p
->dpif
, odp_actions
.actions
, odp_actions
.n_actions
,
3100 ofpbuf_delete(buffer
);
3105 update_port_config(struct ofproto
*p
, struct ofport
*port
,
3106 uint32_t config
, uint32_t mask
)
3108 mask
&= config
^ port
->opp
.config
;
3109 if (mask
& OFPPC_PORT_DOWN
) {
3110 if (config
& OFPPC_PORT_DOWN
) {
3111 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
3113 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
3116 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
3117 OFPPC_NO_FWD | OFPPC_NO_FLOOD)
3118 if (mask
& REVALIDATE_BITS
) {
3119 COVERAGE_INC(ofproto_costly_flags
);
3120 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
3121 p
->need_revalidate
= true;
3123 #undef REVALIDATE_BITS
3124 if (mask
& OFPPC_NO_PACKET_IN
) {
3125 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
3130 handle_port_mod(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3132 struct ofproto
*p
= ofconn
->ofproto
;
3133 const struct ofp_port_mod
*opm
;
3134 struct ofport
*port
;
3137 error
= reject_slave_controller(ofconn
, "OFPT_PORT_MOD");
3141 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
3145 opm
= (struct ofp_port_mod
*) oh
;
3147 port
= get_port(p
, ofp_port_to_odp_port(ntohs(opm
->port_no
)));
3149 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
3150 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
3151 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
3153 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
3154 if (opm
->advertise
) {
3155 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
3161 static struct ofpbuf
*
3162 make_ofp_stats_reply(ovs_be32 xid
, ovs_be16 type
, size_t body_len
)
3164 struct ofp_stats_reply
*osr
;
3167 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
3168 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
3170 osr
->flags
= htons(0);
3174 static struct ofpbuf
*
3175 start_ofp_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
3177 return make_ofp_stats_reply(request
->header
.xid
, request
->type
, body_len
);
3181 append_ofp_stats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3182 struct ofpbuf
**msgp
)
3184 struct ofpbuf
*msg
= *msgp
;
3185 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
3186 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3187 struct ofp_stats_reply
*reply
= msg
->data
;
3188 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3189 *msgp
= make_ofp_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
3190 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3192 return ofpbuf_put_uninit(*msgp
, nbytes
);
3195 static struct ofpbuf
*
3196 make_nxstats_reply(ovs_be32 xid
, ovs_be32 subtype
, size_t body_len
)
3198 struct nicira_stats_msg
*nsm
;
3201 msg
= ofpbuf_new(MIN(sizeof *nsm
+ body_len
, UINT16_MAX
));
3202 nsm
= put_openflow_xid(sizeof *nsm
, OFPT_STATS_REPLY
, xid
, msg
);
3203 nsm
->type
= htons(OFPST_VENDOR
);
3204 nsm
->flags
= htons(0);
3205 nsm
->vendor
= htonl(NX_VENDOR_ID
);
3206 nsm
->subtype
= htonl(subtype
);
3210 static struct ofpbuf
*
3211 start_nxstats_reply(const struct nicira_stats_msg
*request
, size_t body_len
)
3213 return make_nxstats_reply(request
->header
.xid
, request
->subtype
, body_len
);
3217 append_nxstats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3218 struct ofpbuf
**msgp
)
3220 struct ofpbuf
*msg
= *msgp
;
3221 assert(nbytes
<= UINT16_MAX
- sizeof(struct nicira_stats_msg
));
3222 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3223 struct nicira_stats_msg
*reply
= msg
->data
;
3224 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3225 *msgp
= make_nxstats_reply(reply
->header
.xid
, reply
->subtype
, nbytes
);
3226 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3228 ofpbuf_prealloc_tailroom(*msgp
, nbytes
);
3232 handle_desc_stats_request(struct ofconn
*ofconn
,
3233 struct ofp_stats_request
*request
)
3235 struct ofproto
*p
= ofconn
->ofproto
;
3236 struct ofp_desc_stats
*ods
;
3239 msg
= start_ofp_stats_reply(request
, sizeof *ods
);
3240 ods
= append_ofp_stats_reply(sizeof *ods
, ofconn
, &msg
);
3241 memset(ods
, 0, sizeof *ods
);
3242 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
3243 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
3244 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
3245 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
3246 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
3247 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3253 handle_table_stats_request(struct ofconn
*ofconn
,
3254 struct ofp_stats_request
*request
)
3256 struct ofproto
*p
= ofconn
->ofproto
;
3257 struct ofp_table_stats
*ots
;
3260 msg
= start_ofp_stats_reply(request
, sizeof *ots
* 2);
3262 /* Classifier table. */
3263 ots
= append_ofp_stats_reply(sizeof *ots
, ofconn
, &msg
);
3264 memset(ots
, 0, sizeof *ots
);
3265 strcpy(ots
->name
, "classifier");
3266 ots
->wildcards
= (ofconn
->flow_format
== NXFF_OPENFLOW10
3267 ? htonl(OFPFW_ALL
) : htonl(OVSFW_ALL
));
3268 ots
->max_entries
= htonl(1024 * 1024); /* An arbitrary big number. */
3269 ots
->active_count
= htonl(classifier_count(&p
->cls
));
3270 ots
->lookup_count
= htonll(0); /* XXX */
3271 ots
->matched_count
= htonll(0); /* XXX */
3273 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3278 append_port_stat(struct ofport
*port
, struct ofconn
*ofconn
,
3279 struct ofpbuf
**msgp
)
3281 struct netdev_stats stats
;
3282 struct ofp_port_stats
*ops
;
3284 /* Intentionally ignore return value, since errors will set
3285 * 'stats' to all-1s, which is correct for OpenFlow, and
3286 * netdev_get_stats() will log errors. */
3287 netdev_get_stats(port
->netdev
, &stats
);
3289 ops
= append_ofp_stats_reply(sizeof *ops
, ofconn
, msgp
);
3290 ops
->port_no
= htons(port
->opp
.port_no
);
3291 memset(ops
->pad
, 0, sizeof ops
->pad
);
3292 ops
->rx_packets
= htonll(stats
.rx_packets
);
3293 ops
->tx_packets
= htonll(stats
.tx_packets
);
3294 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3295 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3296 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3297 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3298 ops
->rx_errors
= htonll(stats
.rx_errors
);
3299 ops
->tx_errors
= htonll(stats
.tx_errors
);
3300 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3301 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3302 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3303 ops
->collisions
= htonll(stats
.collisions
);
3307 handle_port_stats_request(struct ofconn
*ofconn
, struct ofp_stats_request
*osr
,
3310 struct ofproto
*p
= ofconn
->ofproto
;
3311 struct ofp_port_stats_request
*psr
;
3312 struct ofp_port_stats
*ops
;
3314 struct ofport
*port
;
3316 if (arg_size
!= sizeof *psr
) {
3317 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3319 psr
= (struct ofp_port_stats_request
*) osr
->body
;
3321 msg
= start_ofp_stats_reply(osr
, sizeof *ops
* 16);
3322 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3323 port
= get_port(p
, ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3325 append_port_stat(port
, ofconn
, &msg
);
3328 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3329 append_port_stat(port
, ofconn
, &msg
);
3333 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3337 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3338 * '*packet_countp' and '*byte_countp'. The returned statistics include
3339 * statistics for all of 'rule''s facets. */
3341 query_stats(struct ofproto
*p
, struct rule
*rule
,
3342 uint64_t *packet_countp
, uint64_t *byte_countp
)
3344 uint64_t packet_count
, byte_count
;
3345 struct facet
*facet
;
3346 struct odp_flow
*odp_flows
;
3349 /* Start from historical data for 'rule' itself that are no longer tracked
3350 * by the datapath. This counts, for example, facets that have expired. */
3351 packet_count
= rule
->packet_count
;
3352 byte_count
= rule
->byte_count
;
3354 /* Prepare to ask the datapath for statistics on all of the rule's facets.
3356 * Also, add any statistics that are not tracked by the datapath for each
3357 * facet. This includes, for example, statistics for packets that were
3358 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3360 odp_flows
= xzalloc(list_size(&rule
->facets
) * sizeof *odp_flows
);
3362 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
3363 struct odp_flow
*odp_flow
= &odp_flows
[n_odp_flows
++];
3364 odp_flow_key_from_flow(&odp_flow
->key
, &facet
->flow
);
3365 packet_count
+= facet
->packet_count
;
3366 byte_count
+= facet
->byte_count
;
3369 /* Fetch up-to-date statistics from the datapath and add them in. */
3370 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
3373 for (i
= 0; i
< n_odp_flows
; i
++) {
3374 struct odp_flow
*odp_flow
= &odp_flows
[i
];
3375 packet_count
+= odp_flow
->stats
.n_packets
;
3376 byte_count
+= odp_flow
->stats
.n_bytes
;
3381 /* Return the stats to the caller. */
3382 *packet_countp
= packet_count
;
3383 *byte_countp
= byte_count
;
3387 calc_flow_duration(long long int start
, ovs_be32
*sec
, ovs_be32
*nsec
)
3389 long long int msecs
= time_msec() - start
;
3390 *sec
= htonl(msecs
/ 1000);
3391 *nsec
= htonl((msecs
% 1000) * (1000 * 1000));
3395 put_ofp_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3396 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3398 struct ofp_flow_stats
*ofs
;
3399 uint64_t packet_count
, byte_count
;
3400 size_t act_len
, len
;
3402 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3406 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3407 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3409 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3411 ofs
= append_ofp_stats_reply(len
, ofconn
, replyp
);
3412 ofs
->length
= htons(len
);
3415 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofs
->match
);
3416 calc_flow_duration(rule
->created
, &ofs
->duration_sec
, &ofs
->duration_nsec
);
3417 ofs
->cookie
= rule
->flow_cookie
;
3418 ofs
->priority
= htons(rule
->cr
.priority
);
3419 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3420 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3421 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3422 ofs
->packet_count
= htonll(packet_count
);
3423 ofs
->byte_count
= htonll(byte_count
);
3424 if (rule
->n_actions
> 0) {
3425 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3430 is_valid_table(uint8_t table_id
)
3432 return table_id
== 0 || table_id
== 0xff;
3436 handle_flow_stats_request(struct ofconn
*ofconn
,
3437 const struct ofp_stats_request
*osr
, size_t arg_size
)
3439 struct ofp_flow_stats_request
*fsr
;
3440 struct ofpbuf
*reply
;
3442 if (arg_size
!= sizeof *fsr
) {
3443 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3445 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
3447 COVERAGE_INC(ofproto_flows_req
);
3448 reply
= start_ofp_stats_reply(osr
, 1024);
3449 if (is_valid_table(fsr
->table_id
)) {
3450 struct cls_cursor cursor
;
3451 struct cls_rule target
;
3454 ofputil_cls_rule_from_match(&fsr
->match
, 0, NXFF_OPENFLOW10
, 0,
3456 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3457 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3458 put_ofp_flow_stats(ofconn
, rule
, fsr
->out_port
, &reply
);
3461 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3467 put_nx_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3468 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3470 struct nx_flow_stats
*nfs
;
3471 uint64_t packet_count
, byte_count
;
3472 size_t act_len
, start_len
;
3473 struct ofpbuf
*reply
;
3475 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3479 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3481 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3483 start_len
= (*replyp
)->size
;
3484 append_nxstats_reply(sizeof *nfs
+ NXM_MAX_LEN
+ act_len
, ofconn
, replyp
);
3487 nfs
= ofpbuf_put_uninit(reply
, sizeof *nfs
);
3490 calc_flow_duration(rule
->created
, &nfs
->duration_sec
, &nfs
->duration_nsec
);
3491 nfs
->cookie
= rule
->flow_cookie
;
3492 nfs
->priority
= htons(rule
->cr
.priority
);
3493 nfs
->idle_timeout
= htons(rule
->idle_timeout
);
3494 nfs
->hard_timeout
= htons(rule
->hard_timeout
);
3495 nfs
->match_len
= htons(nx_put_match(reply
, &rule
->cr
));
3496 memset(nfs
->pad2
, 0, sizeof nfs
->pad2
);
3497 nfs
->packet_count
= htonll(packet_count
);
3498 nfs
->byte_count
= htonll(byte_count
);
3499 if (rule
->n_actions
> 0) {
3500 ofpbuf_put(reply
, rule
->actions
, act_len
);
3502 nfs
->length
= htons(reply
->size
- start_len
);
3506 handle_nxst_flow(struct ofconn
*ofconn
, struct ofpbuf
*b
)
3508 struct nx_flow_stats_request
*nfsr
;
3509 struct cls_rule target
;
3510 struct ofpbuf
*reply
;
3513 /* Dissect the message. */
3514 nfsr
= ofpbuf_try_pull(b
, sizeof *nfsr
);
3516 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3518 error
= nx_pull_match(b
, ntohs(nfsr
->match_len
), 0, &target
);
3523 COVERAGE_INC(ofproto_flows_req
);
3524 reply
= start_nxstats_reply(&nfsr
->nsm
, 1024);
3525 if (is_valid_table(nfsr
->table_id
)) {
3526 struct cls_cursor cursor
;
3529 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3530 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3531 put_nx_flow_stats(ofconn
, rule
, nfsr
->out_port
, &reply
);
3534 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3540 flow_stats_ds(struct ofproto
*ofproto
, struct rule
*rule
, struct ds
*results
)
3542 struct ofp_match match
;
3543 uint64_t packet_count
, byte_count
;
3544 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3546 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3547 ofputil_cls_rule_to_match(&rule
->cr
, NXFF_OPENFLOW10
, &match
);
3549 ds_put_format(results
, "duration=%llds, ",
3550 (time_msec() - rule
->created
) / 1000);
3551 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3552 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3553 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3554 ofp_print_match(results
, &match
, true);
3556 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3558 ds_put_cstr(results
, "drop");
3560 ds_put_cstr(results
, "\n");
3563 /* Adds a pretty-printed description of all flows to 'results', including
3564 * those marked hidden by secchan (e.g., by in-band control). */
3566 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3568 struct cls_cursor cursor
;
3571 cls_cursor_init(&cursor
, &p
->cls
, NULL
);
3572 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3573 flow_stats_ds(p
, rule
, results
);
3578 query_aggregate_stats(struct ofproto
*ofproto
, struct cls_rule
*target
,
3579 ovs_be16 out_port
, uint8_t table_id
,
3580 struct ofp_aggregate_stats_reply
*oasr
)
3582 uint64_t total_packets
= 0;
3583 uint64_t total_bytes
= 0;
3586 COVERAGE_INC(ofproto_agg_request
);
3588 if (is_valid_table(table_id
)) {
3589 struct cls_cursor cursor
;
3592 cls_cursor_init(&cursor
, &ofproto
->cls
, target
);
3593 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3594 if (!rule_is_hidden(rule
) && rule_has_out_port(rule
, out_port
)) {
3595 uint64_t packet_count
;
3596 uint64_t byte_count
;
3598 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3600 total_packets
+= packet_count
;
3601 total_bytes
+= byte_count
;
3607 oasr
->flow_count
= htonl(n_flows
);
3608 oasr
->packet_count
= htonll(total_packets
);
3609 oasr
->byte_count
= htonll(total_bytes
);
3610 memset(oasr
->pad
, 0, sizeof oasr
->pad
);
3614 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3615 const struct ofp_stats_request
*osr
,
3618 struct ofp_aggregate_stats_request
*request
;
3619 struct ofp_aggregate_stats_reply
*reply
;
3620 struct cls_rule target
;
3623 if (arg_size
!= sizeof *request
) {
3624 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3626 request
= (struct ofp_aggregate_stats_request
*) osr
->body
;
3628 ofputil_cls_rule_from_match(&request
->match
, 0, NXFF_OPENFLOW10
, 0,
3631 msg
= start_ofp_stats_reply(osr
, sizeof *reply
);
3632 reply
= append_ofp_stats_reply(sizeof *reply
, ofconn
, &msg
);
3633 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3634 request
->table_id
, reply
);
3635 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3640 handle_nxst_aggregate(struct ofconn
*ofconn
, struct ofpbuf
*b
)
3642 struct nx_aggregate_stats_request
*request
;
3643 struct ofp_aggregate_stats_reply
*reply
;
3644 struct cls_rule target
;
3648 /* Dissect the message. */
3649 request
= ofpbuf_try_pull(b
, sizeof *request
);
3651 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3653 error
= nx_pull_match(b
, ntohs(request
->match_len
), 0, &target
);
3659 COVERAGE_INC(ofproto_flows_req
);
3660 buf
= start_nxstats_reply(&request
->nsm
, sizeof *reply
);
3661 reply
= ofpbuf_put_uninit(buf
, sizeof *reply
);
3662 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3663 request
->table_id
, reply
);
3664 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3669 struct queue_stats_cbdata
{
3670 struct ofconn
*ofconn
;
3671 struct ofport
*ofport
;
3676 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3677 const struct netdev_queue_stats
*stats
)
3679 struct ofp_queue_stats
*reply
;
3681 reply
= append_ofp_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3682 reply
->port_no
= htons(cbdata
->ofport
->opp
.port_no
);
3683 memset(reply
->pad
, 0, sizeof reply
->pad
);
3684 reply
->queue_id
= htonl(queue_id
);
3685 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3686 reply
->tx_packets
= htonll(stats
->tx_packets
);
3687 reply
->tx_errors
= htonll(stats
->tx_errors
);
3691 handle_queue_stats_dump_cb(uint32_t queue_id
,
3692 struct netdev_queue_stats
*stats
,
3695 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3697 put_queue_stats(cbdata
, queue_id
, stats
);
3701 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3702 struct queue_stats_cbdata
*cbdata
)
3704 cbdata
->ofport
= port
;
3705 if (queue_id
== OFPQ_ALL
) {
3706 netdev_dump_queue_stats(port
->netdev
,
3707 handle_queue_stats_dump_cb
, cbdata
);
3709 struct netdev_queue_stats stats
;
3711 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3712 put_queue_stats(cbdata
, queue_id
, &stats
);
3718 handle_queue_stats_request(struct ofconn
*ofconn
,
3719 const struct ofp_stats_request
*osr
,
3722 struct ofproto
*ofproto
= ofconn
->ofproto
;
3723 struct ofp_queue_stats_request
*qsr
;
3724 struct queue_stats_cbdata cbdata
;
3725 struct ofport
*port
;
3726 unsigned int port_no
;
3729 if (arg_size
!= sizeof *qsr
) {
3730 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3732 qsr
= (struct ofp_queue_stats_request
*) osr
->body
;
3734 COVERAGE_INC(ofproto_queue_req
);
3736 cbdata
.ofconn
= ofconn
;
3737 cbdata
.msg
= start_ofp_stats_reply(osr
, 128);
3739 port_no
= ntohs(qsr
->port_no
);
3740 queue_id
= ntohl(qsr
->queue_id
);
3741 if (port_no
== OFPP_ALL
) {
3742 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3743 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3745 } else if (port_no
< ofproto
->max_ports
) {
3746 port
= get_port(ofproto
, ofp_port_to_odp_port(port_no
));
3748 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3751 ofpbuf_delete(cbdata
.msg
);
3752 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3754 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3760 handle_vendor_stats_request(struct ofconn
*ofconn
,
3761 struct ofp_stats_request
*osr
, size_t arg_size
)
3763 struct nicira_stats_msg
*nsm
;
3768 VLOG_WARN_RL(&rl
, "truncated vendor stats request body");
3769 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3772 memcpy(&vendor
, osr
->body
, sizeof vendor
);
3773 if (vendor
!= htonl(NX_VENDOR_ID
)) {
3774 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3777 if (ntohs(osr
->header
.length
) < sizeof(struct nicira_stats_msg
)) {
3778 VLOG_WARN_RL(&rl
, "truncated Nicira stats request");
3779 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3782 nsm
= (struct nicira_stats_msg
*) osr
;
3784 b
.size
= ntohs(nsm
->header
.length
);
3785 switch (ntohl(nsm
->subtype
)) {
3787 return handle_nxst_flow(ofconn
, &b
);
3789 case NXST_AGGREGATE
:
3790 return handle_nxst_aggregate(ofconn
, &b
);
3793 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3798 handle_stats_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3800 struct ofp_stats_request
*osr
;
3804 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
3809 osr
= (struct ofp_stats_request
*) oh
;
3811 switch (ntohs(osr
->type
)) {
3813 return handle_desc_stats_request(ofconn
, osr
);
3816 return handle_flow_stats_request(ofconn
, osr
, arg_size
);
3818 case OFPST_AGGREGATE
:
3819 return handle_aggregate_stats_request(ofconn
, osr
, arg_size
);
3822 return handle_table_stats_request(ofconn
, osr
);
3825 return handle_port_stats_request(ofconn
, osr
, arg_size
);
3828 return handle_queue_stats_request(ofconn
, osr
, arg_size
);
3831 return handle_vendor_stats_request(ofconn
, osr
, arg_size
);
3834 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
3838 static long long int
3839 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3841 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3845 facet_update_time(struct ofproto
*ofproto
, struct facet
*facet
,
3846 const struct odp_flow_stats
*stats
)
3848 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3849 if (used
> facet
->used
) {
3851 if (used
> facet
->rule
->used
) {
3852 facet
->rule
->used
= used
;
3854 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
3858 /* Folds the statistics from 'stats' into the counters in 'facet'.
3860 * Because of the meaning of a facet's counters, it only makes sense to do this
3861 * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
3862 * packet that was sent by hand or if it represents statistics that have been
3863 * cleared out of the datapath. */
3865 facet_update_stats(struct ofproto
*ofproto
, struct facet
*facet
,
3866 const struct odp_flow_stats
*stats
)
3868 if (stats
->n_packets
) {
3869 facet_update_time(ofproto
, facet
, stats
);
3870 facet
->packet_count
+= stats
->n_packets
;
3871 facet
->byte_count
+= stats
->n_bytes
;
3872 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
3880 uint16_t idle_timeout
;
3881 uint16_t hard_timeout
;
3885 union ofp_action
*actions
;
3889 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3890 * in which no matching flow already exists in the flow table.
3892 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3893 * ofp_actions, to ofconn->ofproto's flow table. Returns 0 on success or an
3894 * OpenFlow error code as encoded by ofp_mkerr() on failure.
3896 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3899 add_flow(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3901 struct ofproto
*p
= ofconn
->ofproto
;
3902 struct ofpbuf
*packet
;
3907 if (fm
->flags
& OFPFF_CHECK_OVERLAP
3908 && classifier_rule_overlaps(&p
->cls
, &fm
->cr
)) {
3909 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3913 if (fm
->buffer_id
!= UINT32_MAX
) {
3914 error
= pktbuf_retrieve(ofconn
->pktbuf
, fm
->buffer_id
,
3918 in_port
= UINT16_MAX
;
3921 rule
= rule_create(&fm
->cr
, fm
->actions
, fm
->n_actions
,
3922 fm
->idle_timeout
, fm
->hard_timeout
, fm
->cookie
,
3923 fm
->flags
& OFPFF_SEND_FLOW_REM
);
3924 rule_insert(p
, rule
);
3926 rule_execute(p
, rule
, in_port
, packet
);
3931 static struct rule
*
3932 find_flow_strict(struct ofproto
*p
, const struct flow_mod
*fm
)
3934 return rule_from_cls_rule(classifier_find_rule_exactly(&p
->cls
, &fm
->cr
));
3938 send_buffered_packet(struct ofconn
*ofconn
,
3939 struct rule
*rule
, uint32_t buffer_id
)
3941 struct ofpbuf
*packet
;
3945 if (buffer_id
== UINT32_MAX
) {
3949 error
= pktbuf_retrieve(ofconn
->pktbuf
, buffer_id
, &packet
, &in_port
);
3954 rule_execute(ofconn
->ofproto
, rule
, in_port
, packet
);
3959 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3961 struct modify_flows_cbdata
{
3962 struct ofproto
*ofproto
;
3963 const struct flow_mod
*fm
;
3967 static int modify_flow(struct ofproto
*, const struct flow_mod
*,
3970 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3971 * encoded by ofp_mkerr() on failure.
3973 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3976 modify_flows_loose(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3978 struct ofproto
*p
= ofconn
->ofproto
;
3979 struct rule
*match
= NULL
;
3980 struct cls_cursor cursor
;
3983 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
3984 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3985 if (!rule_is_hidden(rule
)) {
3987 modify_flow(p
, fm
, rule
);
3992 /* This credits the packet to whichever flow happened to match last.
3993 * That's weird. Maybe we should do a lookup for the flow that
3994 * actually matches the packet? Who knows. */
3995 send_buffered_packet(ofconn
, match
, fm
->buffer_id
);
3998 return add_flow(ofconn
, fm
);
4002 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
4003 * code as encoded by ofp_mkerr() on failure.
4005 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
4008 modify_flow_strict(struct ofconn
*ofconn
, struct flow_mod
*fm
)
4010 struct ofproto
*p
= ofconn
->ofproto
;
4011 struct rule
*rule
= find_flow_strict(p
, fm
);
4012 if (rule
&& !rule_is_hidden(rule
)) {
4013 modify_flow(p
, fm
, rule
);
4014 return send_buffered_packet(ofconn
, rule
, fm
->buffer_id
);
4016 return add_flow(ofconn
, fm
);
4020 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
4021 * been identified as a flow in 'p''s flow table to be modified, by changing
4022 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
4023 * ofp_action[] structures). */
4025 modify_flow(struct ofproto
*p
, const struct flow_mod
*fm
, struct rule
*rule
)
4027 size_t actions_len
= fm
->n_actions
* sizeof *rule
->actions
;
4029 rule
->flow_cookie
= fm
->cookie
;
4031 /* If the actions are the same, do nothing. */
4032 if (fm
->n_actions
== rule
->n_actions
4034 || !memcmp(fm
->actions
, rule
->actions
, actions_len
))) {
4038 /* Replace actions. */
4039 free(rule
->actions
);
4040 rule
->actions
= fm
->n_actions
? xmemdup(fm
->actions
, actions_len
) : NULL
;
4041 rule
->n_actions
= fm
->n_actions
;
4043 p
->need_revalidate
= true;
4048 /* OFPFC_DELETE implementation. */
4050 static void delete_flow(struct ofproto
*, struct rule
*, ovs_be16 out_port
);
4052 /* Implements OFPFC_DELETE. */
4054 delete_flows_loose(struct ofproto
*p
, const struct flow_mod
*fm
)
4056 struct rule
*rule
, *next_rule
;
4057 struct cls_cursor cursor
;
4059 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
4060 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
4061 delete_flow(p
, rule
, htons(fm
->out_port
));
4065 /* Implements OFPFC_DELETE_STRICT. */
4067 delete_flow_strict(struct ofproto
*p
, struct flow_mod
*fm
)
4069 struct rule
*rule
= find_flow_strict(p
, fm
);
4071 delete_flow(p
, rule
, htons(fm
->out_port
));
4075 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
4076 * been identified as a flow to delete from 'p''s flow table, by deleting the
4077 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
4080 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
4081 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
4082 * specified 'out_port'. */
4084 delete_flow(struct ofproto
*p
, struct rule
*rule
, ovs_be16 out_port
)
4086 if (rule_is_hidden(rule
)) {
4090 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
4094 rule_send_removed(p
, rule
, OFPRR_DELETE
);
4095 rule_remove(p
, rule
);
4099 flow_mod_core(struct ofconn
*ofconn
, struct flow_mod
*fm
)
4101 struct ofproto
*p
= ofconn
->ofproto
;
4104 error
= reject_slave_controller(ofconn
, "flow_mod");
4109 error
= validate_actions(fm
->actions
, fm
->n_actions
,
4110 &fm
->cr
.flow
, p
->max_ports
);
4115 /* We do not support the emergency flow cache. It will hopefully
4116 * get dropped from OpenFlow in the near future. */
4117 if (fm
->flags
& OFPFF_EMERG
) {
4118 /* There isn't a good fit for an error code, so just state that the
4119 * flow table is full. */
4120 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
4123 switch (fm
->command
) {
4125 return add_flow(ofconn
, fm
);
4128 return modify_flows_loose(ofconn
, fm
);
4130 case OFPFC_MODIFY_STRICT
:
4131 return modify_flow_strict(ofconn
, fm
);
4134 delete_flows_loose(p
, fm
);
4137 case OFPFC_DELETE_STRICT
:
4138 delete_flow_strict(p
, fm
);
4142 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
4147 handle_ofpt_flow_mod(struct ofconn
*ofconn
, struct ofp_header
*oh
)
4149 struct ofp_match orig_match
;
4150 struct ofp_flow_mod
*ofm
;
4156 b
.size
= ntohs(oh
->length
);
4158 /* Dissect the message. */
4159 ofm
= ofpbuf_try_pull(&b
, sizeof *ofm
);
4161 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4163 error
= ofputil_pull_actions(&b
, b
.size
, &fm
.actions
, &fm
.n_actions
);
4168 /* Normalize ofm->match. If normalization actually changes anything, then
4169 * log the differences. */
4170 ofm
->match
.pad1
[0] = ofm
->match
.pad2
[0] = 0;
4171 orig_match
= ofm
->match
;
4172 normalize_match(&ofm
->match
);
4173 if (memcmp(&ofm
->match
, &orig_match
, sizeof orig_match
)) {
4174 static struct vlog_rate_limit normal_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4175 if (!VLOG_DROP_INFO(&normal_rl
)) {
4176 char *old
= ofp_match_to_literal_string(&orig_match
);
4177 char *new = ofp_match_to_literal_string(&ofm
->match
);
4178 VLOG_INFO("%s: normalization changed ofp_match, details:",
4179 rconn_get_name(ofconn
->rconn
));
4180 VLOG_INFO(" pre: %s", old
);
4181 VLOG_INFO("post: %s", new);
4187 /* Translate the message. */
4188 ofputil_cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
4189 ofconn
->flow_format
, ofm
->cookie
, &fm
.cr
);
4190 fm
.cookie
= ofm
->cookie
;
4191 fm
.command
= ntohs(ofm
->command
);
4192 fm
.idle_timeout
= ntohs(ofm
->idle_timeout
);
4193 fm
.hard_timeout
= ntohs(ofm
->hard_timeout
);
4194 fm
.buffer_id
= ntohl(ofm
->buffer_id
);
4195 fm
.out_port
= ntohs(ofm
->out_port
);
4196 fm
.flags
= ntohs(ofm
->flags
);
4198 /* Execute the command. */
4199 return flow_mod_core(ofconn
, &fm
);
4203 handle_nxt_flow_mod(struct ofconn
*ofconn
, struct ofp_header
*oh
)
4205 struct nx_flow_mod
*nfm
;
4211 b
.size
= ntohs(oh
->length
);
4213 /* Dissect the message. */
4214 nfm
= ofpbuf_try_pull(&b
, sizeof *nfm
);
4216 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4218 error
= nx_pull_match(&b
, ntohs(nfm
->match_len
), ntohs(nfm
->priority
),
4223 error
= ofputil_pull_actions(&b
, b
.size
, &fm
.actions
, &fm
.n_actions
);
4228 /* Translate the message. */
4229 fm
.cookie
= nfm
->cookie
;
4230 fm
.command
= ntohs(nfm
->command
);
4231 fm
.idle_timeout
= ntohs(nfm
->idle_timeout
);
4232 fm
.hard_timeout
= ntohs(nfm
->hard_timeout
);
4233 fm
.buffer_id
= ntohl(nfm
->buffer_id
);
4234 fm
.out_port
= ntohs(nfm
->out_port
);
4235 fm
.flags
= ntohs(nfm
->flags
);
4237 /* Execute the command. */
4238 return flow_mod_core(ofconn
, &fm
);
4242 handle_tun_id_from_cookie(struct ofconn
*ofconn
, struct nxt_tun_id_cookie
*msg
)
4246 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
4251 ofconn
->flow_format
= msg
->set
? NXFF_TUN_ID_FROM_COOKIE
: NXFF_OPENFLOW10
;
4256 handle_role_request(struct ofconn
*ofconn
, struct nicira_header
*msg
)
4258 struct nx_role_request
*nrr
;
4259 struct nx_role_request
*reply
;
4263 if (ntohs(msg
->header
.length
) != sizeof *nrr
) {
4264 VLOG_WARN_RL(&rl
, "received role request of length %u (expected %zu)",
4265 ntohs(msg
->header
.length
), sizeof *nrr
);
4266 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4268 nrr
= (struct nx_role_request
*) msg
;
4270 if (ofconn
->type
!= OFCONN_PRIMARY
) {
4271 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
4273 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4276 role
= ntohl(nrr
->role
);
4277 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
4278 && role
!= NX_ROLE_SLAVE
) {
4279 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
4281 /* There's no good error code for this. */
4282 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
4285 if (role
== NX_ROLE_MASTER
) {
4286 struct ofconn
*other
;
4288 HMAP_FOR_EACH (other
, hmap_node
, &ofconn
->ofproto
->controllers
) {
4289 if (other
->role
== NX_ROLE_MASTER
) {
4290 other
->role
= NX_ROLE_SLAVE
;
4294 ofconn
->role
= role
;
4296 reply
= make_nxmsg_xid(sizeof *reply
, NXT_ROLE_REPLY
, msg
->header
.xid
,
4298 reply
->role
= htonl(role
);
4299 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4305 handle_nxt_set_flow_format(struct ofconn
*ofconn
,
4306 struct nxt_set_flow_format
*msg
)
4311 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
4316 format
= ntohl(msg
->format
);
4317 if (format
== NXFF_OPENFLOW10
4318 || format
== NXFF_TUN_ID_FROM_COOKIE
4319 || format
== NXFF_NXM
) {
4320 ofconn
->flow_format
= format
;
4323 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4328 handle_vendor(struct ofconn
*ofconn
, void *msg
)
4330 struct ofproto
*p
= ofconn
->ofproto
;
4331 struct ofp_vendor_header
*ovh
= msg
;
4332 struct nicira_header
*nh
;
4334 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
4335 VLOG_WARN_RL(&rl
, "received vendor message of length %u "
4336 "(expected at least %zu)",
4337 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
4338 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4340 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
4341 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
4343 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
4344 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %u "
4345 "(expected at least %zu)",
4346 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
4347 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
4351 switch (ntohl(nh
->subtype
)) {
4352 case NXT_STATUS_REQUEST
:
4353 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
4356 case NXT_TUN_ID_FROM_COOKIE
:
4357 return handle_tun_id_from_cookie(ofconn
, msg
);
4359 case NXT_ROLE_REQUEST
:
4360 return handle_role_request(ofconn
, msg
);
4362 case NXT_SET_FLOW_FORMAT
:
4363 return handle_nxt_set_flow_format(ofconn
, msg
);
4366 return handle_nxt_flow_mod(ofconn
, &ovh
->header
);
4369 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
4373 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
4375 struct ofp_header
*ob
;
4378 /* Currently, everything executes synchronously, so we can just
4379 * immediately send the barrier reply. */
4380 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
4381 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4386 handle_openflow(struct ofconn
*ofconn
, struct ofpbuf
*ofp_msg
)
4388 struct ofp_header
*oh
= ofp_msg
->data
;
4391 COVERAGE_INC(ofproto_recv_openflow
);
4393 case OFPT_ECHO_REQUEST
:
4394 error
= handle_echo_request(ofconn
, oh
);
4397 case OFPT_ECHO_REPLY
:
4401 case OFPT_FEATURES_REQUEST
:
4402 error
= handle_features_request(ofconn
, oh
);
4405 case OFPT_GET_CONFIG_REQUEST
:
4406 error
= handle_get_config_request(ofconn
, oh
);
4409 case OFPT_SET_CONFIG
:
4410 error
= handle_set_config(ofconn
, ofp_msg
->data
);
4413 case OFPT_PACKET_OUT
:
4414 error
= handle_packet_out(ofconn
, ofp_msg
->data
);
4418 error
= handle_port_mod(ofconn
, oh
);
4422 error
= handle_ofpt_flow_mod(ofconn
, ofp_msg
->data
);
4425 case OFPT_STATS_REQUEST
:
4426 error
= handle_stats_request(ofconn
, oh
);
4430 error
= handle_vendor(ofconn
, ofp_msg
->data
);
4433 case OFPT_BARRIER_REQUEST
:
4434 error
= handle_barrier_request(ofconn
, oh
);
4438 if (VLOG_IS_WARN_ENABLED()) {
4439 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4440 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4443 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4448 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4453 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4455 struct odp_msg
*msg
= packet
->data
;
4456 struct ofpbuf payload
;
4457 struct facet
*facet
;
4460 payload
.data
= msg
+ 1;
4461 payload
.size
= msg
->length
- sizeof *msg
;
4462 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
4464 /* Check with in-band control to see if this packet should be sent
4465 * to the local port regardless of the flow table. */
4466 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
4467 union odp_action action
;
4469 memset(&action
, 0, sizeof(action
));
4470 action
.output
.type
= ODPAT_OUTPUT
;
4471 action
.output
.port
= ODPP_LOCAL
;
4472 dpif_execute(p
->dpif
, &action
, 1, &payload
);
4475 facet
= facet_lookup_valid(p
, &flow
);
4477 struct rule
*rule
= rule_lookup(p
, &flow
);
4479 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4480 struct ofport
*port
= get_port(p
, msg
->port
);
4482 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4483 COVERAGE_INC(ofproto_no_packet_in
);
4484 /* XXX install 'drop' flow entry */
4485 ofpbuf_delete(packet
);
4489 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
,
4493 COVERAGE_INC(ofproto_packet_in
);
4494 send_packet_in(p
, packet
);
4498 facet
= facet_create(p
, rule
, &flow
, packet
);
4499 } else if (!facet
->may_install
) {
4500 /* The facet is not installable, that is, we need to process every
4501 * packet, so process the current packet's actions into 'facet'. */
4502 facet_make_actions(p
, facet
, packet
);
4505 if (facet
->rule
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4507 * Extra-special case for fail-open mode.
4509 * We are in fail-open mode and the packet matched the fail-open rule,
4510 * but we are connected to a controller too. We should send the packet
4511 * up to the controller in the hope that it will try to set up a flow
4512 * and thereby allow us to exit fail-open.
4514 * See the top-level comment in fail-open.c for more information.
4516 send_packet_in(p
, ofpbuf_clone_with_headroom(packet
,
4517 DPIF_RECV_MSG_PADDING
));
4520 ofpbuf_pull(packet
, sizeof *msg
);
4521 facet_execute(p
, facet
, packet
);
4522 facet_install(p
, facet
, false);
4526 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4528 struct odp_msg
*msg
= packet
->data
;
4530 switch (msg
->type
) {
4531 case _ODPL_ACTION_NR
:
4532 COVERAGE_INC(ofproto_ctlr_action
);
4533 send_packet_in(p
, packet
);
4536 case _ODPL_SFLOW_NR
:
4538 ofproto_sflow_received(p
->sflow
, msg
);
4540 ofpbuf_delete(packet
);
4544 handle_odp_miss_msg(p
, packet
);
4548 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
4554 /* Flow expiration. */
4556 static int ofproto_dp_max_idle(const struct ofproto
*);
4557 static void ofproto_update_used(struct ofproto
*);
4558 static void rule_expire(struct ofproto
*, struct rule
*);
4559 static void ofproto_expire_facets(struct ofproto
*, int dp_max_idle
);
4561 /* This function is called periodically by ofproto_run(). Its job is to
4562 * collect updates for the flows that have been installed into the datapath,
4563 * most importantly when they last were used, and then use that information to
4564 * expire flows that have not been used recently.
4566 * Returns the number of milliseconds after which it should be called again. */
4568 ofproto_expire(struct ofproto
*ofproto
)
4570 struct rule
*rule
, *next_rule
;
4571 struct cls_cursor cursor
;
4574 /* Update 'used' for each flow in the datapath. */
4575 ofproto_update_used(ofproto
);
4577 /* Expire facets that have been idle too long. */
4578 dp_max_idle
= ofproto_dp_max_idle(ofproto
);
4579 ofproto_expire_facets(ofproto
, dp_max_idle
);
4581 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
4582 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
4583 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
4584 rule_expire(ofproto
, rule
);
4587 /* Let the hook know that we're at a stable point: all outstanding data
4588 * in existing flows has been accounted to the account_cb. Thus, the
4589 * hook can now reasonably do operations that depend on having accurate
4590 * flow volume accounting (currently, that's just bond rebalancing). */
4591 if (ofproto
->ofhooks
->account_checkpoint_cb
) {
4592 ofproto
->ofhooks
->account_checkpoint_cb(ofproto
->aux
);
4595 return MIN(dp_max_idle
, 1000);
4598 /* Update 'used' member of installed facets. */
4600 ofproto_update_used(struct ofproto
*p
)
4602 struct odp_flow
*flows
;
4607 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4612 for (i
= 0; i
< n_flows
; i
++) {
4613 struct odp_flow
*f
= &flows
[i
];
4614 struct facet
*facet
;
4617 odp_flow_key_to_flow(&f
->key
, &flow
);
4618 facet
= facet_find(p
, &flow
);
4620 if (facet
&& facet
->installed
) {
4621 facet_update_time(p
, facet
, &f
->stats
);
4622 facet_account(p
, facet
, f
->stats
.n_bytes
);
4624 /* There's a flow in the datapath that we know nothing about.
4626 COVERAGE_INC(ofproto_unexpected_rule
);
4627 dpif_flow_del(p
->dpif
, f
);
4634 /* Calculates and returns the number of milliseconds of idle time after which
4635 * facets should expire from the datapath and we should fold their statistics
4636 * into their parent rules in userspace. */
4638 ofproto_dp_max_idle(const struct ofproto
*ofproto
)
4641 * Idle time histogram.
4643 * Most of the time a switch has a relatively small number of facets. When
4644 * this is the case we might as well keep statistics for all of them in
4645 * userspace and to cache them in the kernel datapath for performance as
4648 * As the number of facets increases, the memory required to maintain
4649 * statistics about them in userspace and in the kernel becomes
4650 * significant. However, with a large number of facets it is likely that
4651 * only a few of them are "heavy hitters" that consume a large amount of
4652 * bandwidth. At this point, only heavy hitters are worth caching in the
4653 * kernel and maintaining in userspaces; other facets we can discard.
4655 * The technique used to compute the idle time is to build a histogram with
4656 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
4657 * that is installed in the kernel gets dropped in the appropriate bucket.
4658 * After the histogram has been built, we compute the cutoff so that only
4659 * the most-recently-used 1% of facets (but at least 1000 flows) are kept
4660 * cached. At least the most-recently-used bucket of facets is kept, so
4661 * actually an arbitrary number of facets can be kept in any given
4662 * expiration run (though the next run will delete most of those unless
4663 * they receive additional data).
4665 * This requires a second pass through the facets, in addition to the pass
4666 * made by ofproto_update_used(), because the former function never looks
4667 * at uninstallable facets.
4669 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4670 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4671 int buckets
[N_BUCKETS
] = { 0 };
4672 struct facet
*facet
;
4677 total
= hmap_count(&ofproto
->facets
);
4678 if (total
<= 1000) {
4679 return N_BUCKETS
* BUCKET_WIDTH
;
4682 /* Build histogram. */
4684 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
4685 long long int idle
= now
- facet
->used
;
4686 int bucket
= (idle
<= 0 ? 0
4687 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4688 : (unsigned int) idle
/ BUCKET_WIDTH
);
4692 /* Find the first bucket whose flows should be expired. */
4693 for (bucket
= 0; bucket
< N_BUCKETS
; bucket
++) {
4694 if (buckets
[bucket
]) {
4697 subtotal
+= buckets
[bucket
++];
4698 } while (bucket
< N_BUCKETS
&& subtotal
< MAX(1000, total
/ 100));
4703 if (VLOG_IS_DBG_ENABLED()) {
4707 ds_put_cstr(&s
, "keep");
4708 for (i
= 0; i
< N_BUCKETS
; i
++) {
4710 ds_put_cstr(&s
, ", drop");
4713 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4716 VLOG_INFO("%s: %s (msec:count)",
4717 dpif_name(ofproto
->dpif
), ds_cstr(&s
));
4721 return bucket
* BUCKET_WIDTH
;
4725 facet_active_timeout(struct ofproto
*ofproto
, struct facet
*facet
)
4727 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
) &&
4728 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
4729 struct ofexpired expired
;
4730 struct odp_flow odp_flow
;
4732 /* Get updated flow stats.
4734 * XXX We could avoid this call entirely if (1) ofproto_update_used()
4735 * updated TCP flags and (2) the dpif_flow_list_all() in
4736 * ofproto_update_used() zeroed TCP flags. */
4737 memset(&odp_flow
, 0, sizeof odp_flow
);
4738 if (facet
->installed
) {
4739 odp_flow_key_from_flow(&odp_flow
.key
, &facet
->flow
);
4740 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
4741 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
4743 if (odp_flow
.stats
.n_packets
) {
4744 facet_update_time(ofproto
, facet
, &odp_flow
.stats
);
4745 netflow_flow_update_flags(&facet
->nf_flow
,
4746 odp_flow
.stats
.tcp_flags
);
4750 expired
.flow
= facet
->flow
;
4751 expired
.packet_count
= facet
->packet_count
+
4752 odp_flow
.stats
.n_packets
;
4753 expired
.byte_count
= facet
->byte_count
+ odp_flow
.stats
.n_bytes
;
4754 expired
.used
= facet
->used
;
4756 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4761 ofproto_expire_facets(struct ofproto
*ofproto
, int dp_max_idle
)
4763 long long int cutoff
= time_msec() - dp_max_idle
;
4764 struct facet
*facet
, *next_facet
;
4766 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
4767 facet_active_timeout(ofproto
, facet
);
4768 if (facet
->used
< cutoff
) {
4769 facet_remove(ofproto
, facet
);
4774 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4775 * then delete it entirely. */
4777 rule_expire(struct ofproto
*ofproto
, struct rule
*rule
)
4779 struct facet
*facet
, *next_facet
;
4783 /* Has 'rule' expired? */
4785 if (rule
->hard_timeout
4786 && now
> rule
->created
+ rule
->hard_timeout
* 1000) {
4787 reason
= OFPRR_HARD_TIMEOUT
;
4788 } else if (rule
->idle_timeout
&& list_is_empty(&rule
->facets
)
4789 && now
>rule
->used
+ rule
->idle_timeout
* 1000) {
4790 reason
= OFPRR_IDLE_TIMEOUT
;
4795 COVERAGE_INC(ofproto_expired
);
4797 /* Update stats. (This is a no-op if the rule expired due to an idle
4798 * timeout, because that only happens when the rule has no facets left.) */
4799 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4800 facet_remove(ofproto
, facet
);
4803 /* Get rid of the rule. */
4804 if (!rule_is_hidden(rule
)) {
4805 rule_send_removed(ofproto
, rule
, reason
);
4807 rule_remove(ofproto
, rule
);
4810 static struct ofpbuf
*
4811 compose_ofp_flow_removed(struct ofconn
*ofconn
, const struct rule
*rule
,
4814 struct ofp_flow_removed
*ofr
;
4817 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
4818 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofr
->match
);
4819 ofr
->cookie
= rule
->flow_cookie
;
4820 ofr
->priority
= htons(rule
->cr
.priority
);
4821 ofr
->reason
= reason
;
4822 calc_flow_duration(rule
->created
, &ofr
->duration_sec
, &ofr
->duration_nsec
);
4823 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4824 ofr
->packet_count
= htonll(rule
->packet_count
);
4825 ofr
->byte_count
= htonll(rule
->byte_count
);
4830 static struct ofpbuf
*
4831 compose_nx_flow_removed(const struct rule
*rule
, uint8_t reason
)
4833 struct nx_flow_removed
*nfr
;
4837 nfr
= make_nxmsg(sizeof *nfr
, NXT_FLOW_REMOVED
, &buf
);
4839 match_len
= nx_put_match(buf
, &rule
->cr
);
4841 nfr
->cookie
= rule
->flow_cookie
;
4842 nfr
->priority
= htons(rule
->cr
.priority
);
4843 nfr
->reason
= reason
;
4844 calc_flow_duration(rule
->created
, &nfr
->duration_sec
, &nfr
->duration_nsec
);
4845 nfr
->idle_timeout
= htons(rule
->idle_timeout
);
4846 nfr
->match_len
= htons(match_len
);
4847 nfr
->packet_count
= htonll(rule
->packet_count
);
4848 nfr
->byte_count
= htonll(rule
->byte_count
);
4854 rule_send_removed(struct ofproto
*p
, struct rule
*rule
, uint8_t reason
)
4856 struct ofconn
*ofconn
;
4858 if (!rule
->send_flow_removed
) {
4862 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
4865 if (!rconn_is_connected(ofconn
->rconn
)
4866 || !ofconn_receives_async_msgs(ofconn
)) {
4870 msg
= (ofconn
->flow_format
== NXFF_NXM
4871 ? compose_nx_flow_removed(rule
, reason
)
4872 : compose_ofp_flow_removed(ofconn
, rule
, reason
));
4874 /* Account flow expirations under ofconn->reply_counter, the counter
4875 * for replies to OpenFlow requests. That works because preventing
4876 * OpenFlow requests from being processed also prevents new flows from
4877 * being added (and expiring). (It also prevents processing OpenFlow
4878 * requests that would not add new flows, so it is imperfect.) */
4879 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
4883 /* pinsched callback for sending 'packet' on 'ofconn'. */
4885 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4887 struct ofconn
*ofconn
= ofconn_
;
4889 rconn_send_with_limit(ofconn
->rconn
, packet
,
4890 ofconn
->packet_in_counter
, 100);
4893 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4894 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4895 * packet scheduler for sending.
4897 * 'max_len' specifies the maximum number of bytes of the packet to send on
4898 * 'ofconn' (INT_MAX specifies no limit).
4900 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4901 * ownership is transferred to this function. */
4903 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4906 struct ofproto
*ofproto
= ofconn
->ofproto
;
4907 struct ofp_packet_in
*opi
= packet
->data
;
4908 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4909 int send_len
, trim_size
;
4913 if (opi
->reason
== OFPR_ACTION
) {
4914 buffer_id
= UINT32_MAX
;
4915 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4916 buffer_id
= pktbuf_get_null();
4917 } else if (!ofconn
->pktbuf
) {
4918 buffer_id
= UINT32_MAX
;
4920 struct ofpbuf payload
;
4921 payload
.data
= opi
->data
;
4922 payload
.size
= packet
->size
- offsetof(struct ofp_packet_in
, data
);
4923 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4926 /* Figure out how much of the packet to send. */
4927 send_len
= ntohs(opi
->total_len
);
4928 if (buffer_id
!= UINT32_MAX
) {
4929 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4931 send_len
= MIN(send_len
, max_len
);
4933 /* Adjust packet length and clone if necessary. */
4934 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4936 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4939 packet
->size
= trim_size
;
4942 /* Update packet headers. */
4943 opi
->buffer_id
= htonl(buffer_id
);
4944 update_openflow_length(packet
);
4946 /* Hand over to packet scheduler. It might immediately call into
4947 * do_send_packet_in() or it might buffer it for a while (until a later
4948 * call to pinsched_run()). */
4949 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4950 packet
, do_send_packet_in
, ofconn
);
4953 /* Replace struct odp_msg header in 'packet' by equivalent struct
4954 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4955 * returned by dpif_recv()).
4957 * The conversion is not complete: the caller still needs to trim any unneeded
4958 * payload off the end of the buffer, set the length in the OpenFlow header,
4959 * and set buffer_id. Those require us to know the controller settings and so
4960 * must be done on a per-controller basis.
4962 * Returns the maximum number of bytes of the packet that should be sent to
4963 * the controller (INT_MAX if no limit). */
4965 do_convert_to_packet_in(struct ofpbuf
*packet
)
4967 struct odp_msg
*msg
= packet
->data
;
4968 struct ofp_packet_in
*opi
;
4974 /* Extract relevant header fields */
4975 if (msg
->type
== _ODPL_ACTION_NR
) {
4976 reason
= OFPR_ACTION
;
4979 reason
= OFPR_NO_MATCH
;
4982 total_len
= msg
->length
- sizeof *msg
;
4983 in_port
= odp_port_to_ofp_port(msg
->port
);
4985 /* Repurpose packet buffer by overwriting header. */
4986 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4987 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4988 opi
->header
.version
= OFP_VERSION
;
4989 opi
->header
.type
= OFPT_PACKET_IN
;
4990 opi
->total_len
= htons(total_len
);
4991 opi
->in_port
= htons(in_port
);
4992 opi
->reason
= reason
;
4997 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4998 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4999 * as necessary according to their individual configurations.
5001 * 'packet' must have sufficient headroom to convert it into a struct
5002 * ofp_packet_in (e.g. as returned by dpif_recv()).
5004 * Takes ownership of 'packet'. */
5006 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
5008 struct ofconn
*ofconn
, *prev
;
5011 max_len
= do_convert_to_packet_in(packet
);
5014 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
5015 if (ofconn_receives_async_msgs(ofconn
)) {
5017 schedule_packet_in(prev
, packet
, max_len
, true);
5023 schedule_packet_in(prev
, packet
, max_len
, false);
5025 ofpbuf_delete(packet
);
5030 pick_datapath_id(const struct ofproto
*ofproto
)
5032 const struct ofport
*port
;
5034 port
= get_port(ofproto
, ODPP_LOCAL
);
5036 uint8_t ea
[ETH_ADDR_LEN
];
5039 error
= netdev_get_etheraddr(port
->netdev
, ea
);
5041 return eth_addr_to_uint64(ea
);
5043 VLOG_WARN("could not get MAC address for %s (%s)",
5044 netdev_get_name(port
->netdev
), strerror(error
));
5046 return ofproto
->fallback_dpid
;
5050 pick_fallback_dpid(void)
5052 uint8_t ea
[ETH_ADDR_LEN
];
5053 eth_addr_nicira_random(ea
);
5054 return eth_addr_to_uint64(ea
);
5058 default_normal_ofhook_cb(const struct flow
*flow
, const struct ofpbuf
*packet
,
5059 struct odp_actions
*actions
, tag_type
*tags
,
5060 uint16_t *nf_output_iface
, void *ofproto_
)
5062 struct ofproto
*ofproto
= ofproto_
;
5065 /* Drop frames for reserved multicast addresses. */
5066 if (eth_addr_is_reserved(flow
->dl_dst
)) {
5070 /* Learn source MAC (but don't try to learn from revalidation). */
5071 if (packet
!= NULL
) {
5072 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
5074 GRAT_ARP_LOCK_NONE
);
5076 /* The log messages here could actually be useful in debugging,
5077 * so keep the rate limit relatively high. */
5078 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
5079 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
5080 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
5081 ofproto_revalidate(ofproto
, rev_tag
);
5085 /* Determine output port. */
5086 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
5089 flood_packets(ofproto
, flow
->in_port
, OFPPC_NO_FLOOD
,
5090 nf_output_iface
, actions
);
5091 } else if (out_port
!= flow
->in_port
) {
5092 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
5093 *nf_output_iface
= out_port
;
5101 static const struct ofhooks default_ofhooks
= {
5102 default_normal_ofhook_cb
,