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"
43 #include "ofp-print.h"
45 #include "ofproto-sflow.h"
47 #include "openflow/nicira-ext.h"
48 #include "openflow/openflow.h"
49 #include "openvswitch/datapath-protocol.h"
53 #include "poll-loop.h"
57 #include "stream-ssl.h"
65 VLOG_DEFINE_THIS_MODULE(ofproto
);
67 COVERAGE_DEFINE(facet_changed_rule
);
68 COVERAGE_DEFINE(facet_revalidate
);
69 COVERAGE_DEFINE(odp_overflow
);
70 COVERAGE_DEFINE(ofproto_agg_request
);
71 COVERAGE_DEFINE(ofproto_costly_flags
);
72 COVERAGE_DEFINE(ofproto_ctlr_action
);
73 COVERAGE_DEFINE(ofproto_del_rule
);
74 COVERAGE_DEFINE(ofproto_error
);
75 COVERAGE_DEFINE(ofproto_expiration
);
76 COVERAGE_DEFINE(ofproto_expired
);
77 COVERAGE_DEFINE(ofproto_flows_req
);
78 COVERAGE_DEFINE(ofproto_flush
);
79 COVERAGE_DEFINE(ofproto_invalidated
);
80 COVERAGE_DEFINE(ofproto_no_packet_in
);
81 COVERAGE_DEFINE(ofproto_ofconn_stuck
);
82 COVERAGE_DEFINE(ofproto_ofp2odp
);
83 COVERAGE_DEFINE(ofproto_packet_in
);
84 COVERAGE_DEFINE(ofproto_packet_out
);
85 COVERAGE_DEFINE(ofproto_queue_req
);
86 COVERAGE_DEFINE(ofproto_recv_openflow
);
87 COVERAGE_DEFINE(ofproto_reinit_ports
);
88 COVERAGE_DEFINE(ofproto_unexpected_rule
);
89 COVERAGE_DEFINE(ofproto_uninstallable
);
90 COVERAGE_DEFINE(ofproto_update_port
);
92 #include "sflow_api.h"
97 struct hmap_node hmap_node
; /* In struct ofproto's "ports" hmap. */
98 struct netdev
*netdev
;
99 struct ofp_phy_port opp
; /* In host byte order. */
103 static void ofport_free(struct ofport
*);
104 static void hton_ofp_phy_port(struct ofp_phy_port
*);
106 struct action_xlate_ctx
{
107 /* action_xlate_ctx_init() initializes these members. */
110 struct ofproto
*ofproto
;
112 /* Flow to which the OpenFlow actions apply. xlate_actions() will modify
113 * this flow when actions change header fields. */
116 /* The packet corresponding to 'flow', or a null pointer if we are
117 * revalidating without a packet to refer to. */
118 const struct ofpbuf
*packet
;
120 /* If nonnull, called just before executing a resubmit action.
122 * This is normally null so the client has to set it manually after
123 * calling action_xlate_ctx_init(). */
124 void (*resubmit_hook
)(struct action_xlate_ctx
*, const struct rule
*);
126 /* xlate_actions() initializes and uses these members. The client might want
127 * to look at them after it returns. */
129 struct ofpbuf
*odp_actions
; /* Datapath actions. */
130 tag_type tags
; /* Tags associated with OFPP_NORMAL actions. */
131 bool may_set_up_flow
; /* True ordinarily; false if the actions must
132 * be reassessed for every packet. */
133 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
135 /* xlate_actions() initializes and uses these members, but the client has no
136 * reason to look at them. */
138 int recurse
; /* Recursion level, via xlate_table_action. */
139 int last_pop_priority
; /* Offset in 'odp_actions' just past most
140 * recently added ODPAT_SET_PRIORITY. */
143 static void action_xlate_ctx_init(struct action_xlate_ctx
*,
144 struct ofproto
*, const struct flow
*,
145 const struct ofpbuf
*);
146 static struct ofpbuf
*xlate_actions(struct action_xlate_ctx
*,
147 const union ofp_action
*in
, size_t n_in
);
149 /* An OpenFlow flow. */
151 long long int used
; /* Time last used; time created if not used. */
152 long long int created
; /* Creation time. */
156 * - Do include packets and bytes from facets that have been deleted or
157 * whose own statistics have been folded into the rule.
159 * - Do include packets and bytes sent "by hand" that were accounted to
160 * the rule without any facet being involved (this is a rare corner
161 * case in rule_execute()).
163 * - Do not include packet or bytes that can be obtained from any facet's
164 * packet_count or byte_count member or that can be obtained from the
165 * datapath by, e.g., dpif_flow_get() for any facet.
167 uint64_t packet_count
; /* Number of packets received. */
168 uint64_t byte_count
; /* Number of bytes received. */
170 ovs_be64 flow_cookie
; /* Controller-issued identifier. */
172 struct cls_rule cr
; /* In owning ofproto's classifier. */
173 uint16_t idle_timeout
; /* In seconds from time of last use. */
174 uint16_t hard_timeout
; /* In seconds from time of creation. */
175 bool send_flow_removed
; /* Send a flow removed message? */
176 int n_actions
; /* Number of elements in actions[]. */
177 union ofp_action
*actions
; /* OpenFlow actions. */
178 struct list facets
; /* List of "struct facet"s. */
181 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
182 static bool rule_is_hidden(const struct rule
*);
184 static struct rule
*rule_create(const struct cls_rule
*,
185 const union ofp_action
*, size_t n_actions
,
186 uint16_t idle_timeout
, uint16_t hard_timeout
,
187 ovs_be64 flow_cookie
, bool send_flow_removed
);
188 static void rule_destroy(struct ofproto
*, struct rule
*);
189 static void rule_free(struct rule
*);
191 static struct rule
*rule_lookup(struct ofproto
*, const struct flow
*);
192 static void rule_insert(struct ofproto
*, struct rule
*);
193 static void rule_remove(struct ofproto
*, struct rule
*);
195 static void rule_send_removed(struct ofproto
*, struct rule
*, uint8_t reason
);
197 /* An exact-match instantiation of an OpenFlow flow. */
199 long long int used
; /* Time last used; time created if not used. */
203 * - Do include packets and bytes sent "by hand", e.g. with
206 * - Do include packets and bytes that were obtained from the datapath
207 * when a flow was deleted (e.g. dpif_flow_del()) or when its
208 * statistics were reset (e.g. dpif_flow_put() with ODPPF_ZERO_STATS).
210 * - Do not include any packets or bytes that can currently be obtained
211 * from the datapath by, e.g., dpif_flow_get().
213 uint64_t packet_count
; /* Number of packets received. */
214 uint64_t byte_count
; /* Number of bytes received. */
216 /* Number of bytes passed to account_cb. This may include bytes that can
217 * currently obtained from the datapath (thus, it can be greater than
219 uint64_t accounted_bytes
;
221 struct hmap_node hmap_node
; /* In owning ofproto's 'facets' hmap. */
222 struct list list_node
; /* In owning rule's 'facets' list. */
223 struct rule
*rule
; /* Owning rule. */
224 struct flow flow
; /* Exact-match flow. */
225 bool installed
; /* Installed in datapath? */
226 bool may_install
; /* True ordinarily; false if actions must
227 * be reassessed for every packet. */
228 unsigned int actions_len
; /* Number of bytes in actions[]. */
229 struct nlattr
*actions
; /* Datapath actions. */
230 tag_type tags
; /* Tags (set only by hooks). */
231 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
234 static struct facet
*facet_create(struct ofproto
*, struct rule
*,
236 const struct ofpbuf
*packet
);
237 static void facet_remove(struct ofproto
*, struct facet
*);
238 static void facet_free(struct facet
*);
240 static struct facet
*facet_lookup_valid(struct ofproto
*, const struct flow
*);
241 static bool facet_revalidate(struct ofproto
*, struct facet
*);
243 static void facet_install(struct ofproto
*, struct facet
*, bool zero_stats
);
244 static void facet_uninstall(struct ofproto
*, struct facet
*);
245 static void facet_flush_stats(struct ofproto
*, struct facet
*);
247 static void facet_make_actions(struct ofproto
*, struct facet
*,
248 const struct ofpbuf
*packet
);
249 static void facet_update_stats(struct ofproto
*, struct facet
*,
250 const struct odp_flow_stats
*);
252 /* ofproto supports two kinds of OpenFlow connections:
254 * - "Primary" connections to ordinary OpenFlow controllers. ofproto
255 * maintains persistent connections to these controllers and by default
256 * sends them asynchronous messages such as packet-ins.
258 * - "Service" connections, e.g. from ovs-ofctl. When these connections
259 * drop, it is the other side's responsibility to reconnect them if
260 * necessary. ofproto does not send them asynchronous messages by default.
262 * Currently, active (tcp, ssl, unix) connections are always "primary"
263 * connections and passive (ptcp, pssl, punix) connections are always "service"
264 * connections. There is no inherent reason for this, but it reflects the
268 OFCONN_PRIMARY
, /* An ordinary OpenFlow controller. */
269 OFCONN_SERVICE
/* A service connection, e.g. "ovs-ofctl". */
272 /* A listener for incoming OpenFlow "service" connections. */
274 struct hmap_node node
; /* In struct ofproto's "services" hmap. */
275 struct pvconn
*pvconn
; /* OpenFlow connection listener. */
277 /* These are not used by ofservice directly. They are settings for
278 * accepted "struct ofconn"s from the pvconn. */
279 int probe_interval
; /* Max idle time before probing, in seconds. */
280 int rate_limit
; /* Max packet-in rate in packets per second. */
281 int burst_limit
; /* Limit on accumulating packet credits. */
284 static struct ofservice
*ofservice_lookup(struct ofproto
*,
286 static int ofservice_create(struct ofproto
*,
287 const struct ofproto_controller
*);
288 static void ofservice_reconfigure(struct ofservice
*,
289 const struct ofproto_controller
*);
290 static void ofservice_destroy(struct ofproto
*, struct ofservice
*);
292 /* An OpenFlow connection. */
294 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
295 struct list node
; /* In struct ofproto's "all_conns" list. */
296 struct rconn
*rconn
; /* OpenFlow connection. */
297 enum ofconn_type type
; /* Type. */
298 enum nx_flow_format flow_format
; /* Currently selected flow format. */
300 /* OFPT_PACKET_IN related data. */
301 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
302 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
303 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
304 int miss_send_len
; /* Bytes to send of buffered packets. */
306 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
307 * requests, and the maximum number before we stop reading OpenFlow
309 #define OFCONN_REPLY_MAX 100
310 struct rconn_packet_counter
*reply_counter
;
312 /* type == OFCONN_PRIMARY only. */
313 enum nx_role role
; /* Role. */
314 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
315 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
316 struct status_category
*ss
; /* Switch status category. */
317 enum ofproto_band band
; /* In-band or out-of-band? */
320 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
321 * "schedulers" array. Their values are 0 and 1, and their meanings and values
322 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
323 * case anything ever changes, check their values here. */
324 #define N_SCHEDULERS 2
325 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
326 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
327 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
328 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
330 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
332 static void ofconn_destroy(struct ofconn
*);
333 static void ofconn_run(struct ofconn
*);
334 static void ofconn_wait(struct ofconn
*);
335 static bool ofconn_receives_async_msgs(const struct ofconn
*);
336 static char *ofconn_make_name(const struct ofproto
*, const char *target
);
337 static void ofconn_set_rate_limit(struct ofconn
*, int rate
, int burst
);
339 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
340 struct rconn_packet_counter
*counter
);
342 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
343 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
347 uint64_t datapath_id
; /* Datapath ID. */
348 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
349 char *mfr_desc
; /* Manufacturer. */
350 char *hw_desc
; /* Hardware. */
351 char *sw_desc
; /* Software version. */
352 char *serial_desc
; /* Serial number. */
353 char *dp_desc
; /* Datapath description. */
357 struct netdev_monitor
*netdev_monitor
;
358 struct hmap ports
; /* Contains "struct ofport"s. */
359 struct shash port_by_name
;
363 struct switch_status
*switch_status
;
364 struct fail_open
*fail_open
;
365 struct netflow
*netflow
;
366 struct ofproto_sflow
*sflow
;
368 /* In-band control. */
369 struct in_band
*in_band
;
370 long long int next_in_band_update
;
371 struct sockaddr_in
*extra_in_band_remotes
;
372 size_t n_extra_remotes
;
376 struct classifier cls
;
377 long long int next_expiration
;
381 bool need_revalidate
;
382 struct tag_set revalidate_set
;
384 /* OpenFlow connections. */
385 struct hmap controllers
; /* Controller "struct ofconn"s. */
386 struct list all_conns
; /* Contains "struct ofconn"s. */
387 enum ofproto_fail_mode fail_mode
;
389 /* OpenFlow listeners. */
390 struct hmap services
; /* Contains "struct ofservice"s. */
391 struct pvconn
**snoops
;
394 /* Hooks for ovs-vswitchd. */
395 const struct ofhooks
*ofhooks
;
398 /* Used by default ofhooks. */
399 struct mac_learning
*ml
;
402 /* Map from dpif name to struct ofproto, for use by unixctl commands. */
403 static struct shash all_ofprotos
= SHASH_INITIALIZER(&all_ofprotos
);
405 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
407 static const struct ofhooks default_ofhooks
;
409 static uint64_t pick_datapath_id(const struct ofproto
*);
410 static uint64_t pick_fallback_dpid(void);
412 static int ofproto_expire(struct ofproto
*);
414 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
416 static void handle_openflow(struct ofconn
*, struct ofpbuf
*);
418 static struct ofport
*get_port(const struct ofproto
*, uint16_t odp_port
);
419 static void update_port(struct ofproto
*, const char *devname
);
420 static int init_ports(struct ofproto
*);
421 static void reinit_ports(struct ofproto
*);
423 static void ofproto_unixctl_init(void);
426 ofproto_create(const char *datapath
, const char *datapath_type
,
427 const struct ofhooks
*ofhooks
, void *aux
,
428 struct ofproto
**ofprotop
)
430 struct odp_stats stats
;
437 ofproto_unixctl_init();
439 /* Connect to datapath and start listening for messages. */
440 error
= dpif_open(datapath
, datapath_type
, &dpif
);
442 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
445 error
= dpif_get_dp_stats(dpif
, &stats
);
447 VLOG_ERR("failed to obtain stats for datapath %s: %s",
448 datapath
, strerror(error
));
452 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
454 VLOG_ERR("failed to listen on datapath %s: %s",
455 datapath
, strerror(error
));
459 dpif_flow_flush(dpif
);
460 dpif_recv_purge(dpif
);
462 /* Initialize settings. */
463 p
= xzalloc(sizeof *p
);
464 p
->fallback_dpid
= pick_fallback_dpid();
465 p
->datapath_id
= p
->fallback_dpid
;
466 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
467 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
468 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
469 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
470 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
472 /* Initialize datapath. */
474 p
->netdev_monitor
= netdev_monitor_create();
475 hmap_init(&p
->ports
);
476 shash_init(&p
->port_by_name
);
477 p
->max_ports
= stats
.max_ports
;
479 /* Initialize submodules. */
480 p
->switch_status
= switch_status_create(p
);
485 /* Initialize in-band control. */
487 p
->in_band_queue
= -1;
489 /* Initialize flow table. */
490 classifier_init(&p
->cls
);
491 p
->next_expiration
= time_msec() + 1000;
493 /* Initialize facet table. */
494 hmap_init(&p
->facets
);
495 p
->need_revalidate
= false;
496 tag_set_init(&p
->revalidate_set
);
498 /* Initialize OpenFlow connections. */
499 list_init(&p
->all_conns
);
500 hmap_init(&p
->controllers
);
501 hmap_init(&p
->services
);
505 /* Initialize hooks. */
507 p
->ofhooks
= ofhooks
;
511 p
->ofhooks
= &default_ofhooks
;
513 p
->ml
= mac_learning_create();
516 /* Pick final datapath ID. */
517 p
->datapath_id
= pick_datapath_id(p
);
518 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
520 shash_add_once(&all_ofprotos
, dpif_name(p
->dpif
), p
);
527 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
529 uint64_t old_dpid
= p
->datapath_id
;
530 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
531 if (p
->datapath_id
!= old_dpid
) {
532 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
534 /* Force all active connections to reconnect, since there is no way to
535 * notify a controller that the datapath ID has changed. */
536 ofproto_reconnect_controllers(p
);
541 is_discovery_controller(const struct ofproto_controller
*c
)
543 return !strcmp(c
->target
, "discover");
547 is_in_band_controller(const struct ofproto_controller
*c
)
549 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
552 /* Creates a new controller in 'ofproto'. Some of the settings are initially
553 * drawn from 'c', but update_controller() needs to be called later to finish
554 * the new ofconn's configuration. */
556 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
558 struct discovery
*discovery
;
559 struct ofconn
*ofconn
;
561 if (is_discovery_controller(c
)) {
562 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
563 ofproto
->dpif
, ofproto
->switch_status
,
572 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_PRIMARY
);
573 ofconn
->pktbuf
= pktbuf_create();
574 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
576 ofconn
->discovery
= discovery
;
578 char *name
= ofconn_make_name(ofproto
, c
->target
);
579 rconn_connect(ofconn
->rconn
, c
->target
, name
);
582 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
583 hash_string(c
->target
, 0));
586 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
587 * target or turn discovery on or off (these are done by creating new ofconns
588 * and deleting old ones), but it can update the rest of an ofconn's
591 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
595 ofconn
->band
= (is_in_band_controller(c
)
596 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
598 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
600 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
601 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
603 if (ofconn
->discovery
) {
604 discovery_set_update_resolv_conf(ofconn
->discovery
,
605 c
->update_resolv_conf
);
606 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
609 ofconn_set_rate_limit(ofconn
, c
->rate_limit
, c
->burst_limit
);
613 ofconn_get_target(const struct ofconn
*ofconn
)
615 return ofconn
->discovery
? "discover" : rconn_get_target(ofconn
->rconn
);
618 static struct ofconn
*
619 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
621 struct ofconn
*ofconn
;
623 HMAP_FOR_EACH_WITH_HASH (ofconn
, hmap_node
,
624 hash_string(target
, 0), &ofproto
->controllers
) {
625 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
633 update_in_band_remotes(struct ofproto
*ofproto
)
635 const struct ofconn
*ofconn
;
636 struct sockaddr_in
*addrs
;
637 size_t max_addrs
, n_addrs
;
641 /* Allocate enough memory for as many remotes as we could possibly have. */
642 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
643 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
646 /* Add all the remotes. */
648 HMAP_FOR_EACH (ofconn
, hmap_node
, &ofproto
->controllers
) {
649 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
651 if (ofconn
->band
== OFPROTO_OUT_OF_BAND
) {
655 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
656 if (sin
->sin_addr
.s_addr
) {
657 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
660 if (ofconn
->discovery
) {
664 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
665 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
668 /* Create or update or destroy in-band.
670 * Ordinarily we only enable in-band if there's at least one remote
671 * address, but discovery needs the in-band rules for DHCP to be installed
672 * even before we know any remote addresses. */
673 if (n_addrs
|| discovery
) {
674 if (!ofproto
->in_band
) {
675 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
678 if (ofproto
->in_band
) {
679 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
681 in_band_set_queue(ofproto
->in_band
, ofproto
->in_band_queue
);
682 ofproto
->next_in_band_update
= time_msec() + 1000;
684 in_band_destroy(ofproto
->in_band
);
685 ofproto
->in_band
= NULL
;
693 update_fail_open(struct ofproto
*p
)
695 struct ofconn
*ofconn
;
697 if (!hmap_is_empty(&p
->controllers
)
698 && p
->fail_mode
== OFPROTO_FAIL_STANDALONE
) {
699 struct rconn
**rconns
;
703 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
707 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
708 HMAP_FOR_EACH (ofconn
, hmap_node
, &p
->controllers
) {
709 rconns
[n
++] = ofconn
->rconn
;
712 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
713 /* p->fail_open takes ownership of 'rconns'. */
715 fail_open_destroy(p
->fail_open
);
721 ofproto_set_controllers(struct ofproto
*p
,
722 const struct ofproto_controller
*controllers
,
723 size_t n_controllers
)
725 struct shash new_controllers
;
726 struct ofconn
*ofconn
, *next_ofconn
;
727 struct ofservice
*ofservice
, *next_ofservice
;
731 /* Create newly configured controllers and services.
732 * Create a name to ofproto_controller mapping in 'new_controllers'. */
733 shash_init(&new_controllers
);
734 for (i
= 0; i
< n_controllers
; i
++) {
735 const struct ofproto_controller
*c
= &controllers
[i
];
737 if (!vconn_verify_name(c
->target
) || !strcmp(c
->target
, "discover")) {
738 if (!find_controller_by_target(p
, c
->target
)) {
739 add_controller(p
, c
);
741 } else if (!pvconn_verify_name(c
->target
)) {
742 if (!ofservice_lookup(p
, c
->target
) && ofservice_create(p
, c
)) {
746 VLOG_WARN_RL(&rl
, "%s: unsupported controller \"%s\"",
747 dpif_name(p
->dpif
), c
->target
);
751 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
754 /* Delete controllers that are no longer configured.
755 * Update configuration of all now-existing controllers. */
757 HMAP_FOR_EACH_SAFE (ofconn
, next_ofconn
, hmap_node
, &p
->controllers
) {
758 struct ofproto_controller
*c
;
760 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
762 ofconn_destroy(ofconn
);
764 update_controller(ofconn
, c
);
771 /* Delete services that are no longer configured.
772 * Update configuration of all now-existing services. */
773 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
774 struct ofproto_controller
*c
;
776 c
= shash_find_data(&new_controllers
,
777 pvconn_get_name(ofservice
->pvconn
));
779 ofservice_destroy(p
, ofservice
);
781 ofservice_reconfigure(ofservice
, c
);
785 shash_destroy(&new_controllers
);
787 update_in_band_remotes(p
);
790 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
791 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
792 struct ofconn
, hmap_node
);
793 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
794 rconn_status_cb
, ofconn
->rconn
);
799 ofproto_set_fail_mode(struct ofproto
*p
, enum ofproto_fail_mode fail_mode
)
801 p
->fail_mode
= fail_mode
;
805 /* Drops the connections between 'ofproto' and all of its controllers, forcing
806 * them to reconnect. */
808 ofproto_reconnect_controllers(struct ofproto
*ofproto
)
810 struct ofconn
*ofconn
;
812 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
813 rconn_reconnect(ofconn
->rconn
);
818 any_extras_changed(const struct ofproto
*ofproto
,
819 const struct sockaddr_in
*extras
, size_t n
)
823 if (n
!= ofproto
->n_extra_remotes
) {
827 for (i
= 0; i
< n
; i
++) {
828 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
829 const struct sockaddr_in
*new = &extras
[i
];
831 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
832 old
->sin_port
!= new->sin_port
) {
840 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
841 * in-band control should guarantee access, in the same way that in-band
842 * control guarantees access to OpenFlow controllers. */
844 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
845 const struct sockaddr_in
*extras
, size_t n
)
847 if (!any_extras_changed(ofproto
, extras
, n
)) {
851 free(ofproto
->extra_in_band_remotes
);
852 ofproto
->n_extra_remotes
= n
;
853 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
855 update_in_band_remotes(ofproto
);
858 /* Sets the OpenFlow queue used by flows set up by in-band control on
859 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
860 * flows will use the default queue. */
862 ofproto_set_in_band_queue(struct ofproto
*ofproto
, int queue_id
)
864 if (queue_id
!= ofproto
->in_band_queue
) {
865 ofproto
->in_band_queue
= queue_id
;
866 update_in_band_remotes(ofproto
);
871 ofproto_set_desc(struct ofproto
*p
,
872 const char *mfr_desc
, const char *hw_desc
,
873 const char *sw_desc
, const char *serial_desc
,
876 struct ofp_desc_stats
*ods
;
879 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
880 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
881 sizeof ods
->mfr_desc
);
884 p
->mfr_desc
= xstrdup(mfr_desc
);
887 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
888 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
889 sizeof ods
->hw_desc
);
892 p
->hw_desc
= xstrdup(hw_desc
);
895 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
896 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
897 sizeof ods
->sw_desc
);
900 p
->sw_desc
= xstrdup(sw_desc
);
903 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
904 VLOG_WARN("truncating serial_desc, must be less than %zu "
906 sizeof ods
->serial_num
);
908 free(p
->serial_desc
);
909 p
->serial_desc
= xstrdup(serial_desc
);
912 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
913 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
914 sizeof ods
->dp_desc
);
917 p
->dp_desc
= xstrdup(dp_desc
);
922 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
923 const struct svec
*svec
)
925 struct pvconn
**pvconns
= *pvconnsp
;
926 size_t n_pvconns
= *n_pvconnsp
;
930 for (i
= 0; i
< n_pvconns
; i
++) {
931 pvconn_close(pvconns
[i
]);
935 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
937 for (i
= 0; i
< svec
->n
; i
++) {
938 const char *name
= svec
->names
[i
];
939 struct pvconn
*pvconn
;
942 error
= pvconn_open(name
, &pvconn
);
944 pvconns
[n_pvconns
++] = pvconn
;
946 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
954 *n_pvconnsp
= n_pvconns
;
960 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
962 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
966 ofproto_set_netflow(struct ofproto
*ofproto
,
967 const struct netflow_options
*nf_options
)
969 if (nf_options
&& nf_options
->collectors
.n
) {
970 if (!ofproto
->netflow
) {
971 ofproto
->netflow
= netflow_create();
973 return netflow_set_options(ofproto
->netflow
, nf_options
);
975 netflow_destroy(ofproto
->netflow
);
976 ofproto
->netflow
= NULL
;
982 ofproto_set_sflow(struct ofproto
*ofproto
,
983 const struct ofproto_sflow_options
*oso
)
985 struct ofproto_sflow
*os
= ofproto
->sflow
;
988 struct ofport
*ofport
;
990 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
991 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
992 ofproto_sflow_add_port(os
, ofport
->odp_port
,
993 netdev_get_name(ofport
->netdev
));
996 ofproto_sflow_set_options(os
, oso
);
998 ofproto_sflow_destroy(os
);
999 ofproto
->sflow
= NULL
;
1004 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
1006 return ofproto
->datapath_id
;
1010 ofproto_has_primary_controller(const struct ofproto
*ofproto
)
1012 return !hmap_is_empty(&ofproto
->controllers
);
1015 enum ofproto_fail_mode
1016 ofproto_get_fail_mode(const struct ofproto
*p
)
1018 return p
->fail_mode
;
1022 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
1026 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
1027 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
1032 ofproto_destroy(struct ofproto
*p
)
1034 struct ofservice
*ofservice
, *next_ofservice
;
1035 struct ofconn
*ofconn
, *next_ofconn
;
1036 struct ofport
*ofport
, *next_ofport
;
1043 shash_find_and_delete(&all_ofprotos
, dpif_name(p
->dpif
));
1045 /* Destroy fail-open and in-band early, since they touch the classifier. */
1046 fail_open_destroy(p
->fail_open
);
1047 p
->fail_open
= NULL
;
1049 in_band_destroy(p
->in_band
);
1051 free(p
->extra_in_band_remotes
);
1053 ofproto_flush_flows(p
);
1054 classifier_destroy(&p
->cls
);
1055 hmap_destroy(&p
->facets
);
1057 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1058 ofconn_destroy(ofconn
);
1060 hmap_destroy(&p
->controllers
);
1062 dpif_close(p
->dpif
);
1063 netdev_monitor_destroy(p
->netdev_monitor
);
1064 HMAP_FOR_EACH_SAFE (ofport
, next_ofport
, hmap_node
, &p
->ports
) {
1065 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1066 ofport_free(ofport
);
1068 shash_destroy(&p
->port_by_name
);
1070 switch_status_destroy(p
->switch_status
);
1071 netflow_destroy(p
->netflow
);
1072 ofproto_sflow_destroy(p
->sflow
);
1074 HMAP_FOR_EACH_SAFE (ofservice
, next_ofservice
, node
, &p
->services
) {
1075 ofservice_destroy(p
, ofservice
);
1077 hmap_destroy(&p
->services
);
1079 for (i
= 0; i
< p
->n_snoops
; i
++) {
1080 pvconn_close(p
->snoops
[i
]);
1084 mac_learning_destroy(p
->ml
);
1089 free(p
->serial_desc
);
1092 hmap_destroy(&p
->ports
);
1098 ofproto_run(struct ofproto
*p
)
1100 int error
= ofproto_run1(p
);
1102 error
= ofproto_run2(p
, false);
1108 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
1110 if (error
== ENOBUFS
) {
1111 reinit_ports(ofproto
);
1112 } else if (!error
) {
1113 update_port(ofproto
, devname
);
1118 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
1119 * means that 'ofconn' is more interesting for monitoring than a lower return
1122 snoop_preference(const struct ofconn
*ofconn
)
1124 switch (ofconn
->role
) {
1125 case NX_ROLE_MASTER
:
1132 /* Shouldn't happen. */
1137 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
1138 * Connects this vconn to a controller. */
1140 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
1142 struct ofconn
*ofconn
, *best
;
1144 /* Pick a controller for monitoring. */
1146 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
1147 if (ofconn
->type
== OFCONN_PRIMARY
1148 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1154 rconn_add_monitor(best
->rconn
, vconn
);
1156 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1162 ofproto_run1(struct ofproto
*p
)
1164 struct ofconn
*ofconn
, *next_ofconn
;
1165 struct ofservice
*ofservice
;
1170 if (shash_is_empty(&p
->port_by_name
)) {
1174 for (i
= 0; i
< 50; i
++) {
1177 error
= dpif_recv(p
->dpif
, &buf
);
1179 if (error
== ENODEV
) {
1180 /* Someone destroyed the datapath behind our back. The caller
1181 * better destroy us and give up, because we're just going to
1182 * spin from here on out. */
1183 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1184 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1185 dpif_name(p
->dpif
));
1191 handle_odp_msg(p
, buf
);
1194 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1195 process_port_change(p
, error
, devname
);
1197 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1198 &devname
)) != EAGAIN
) {
1199 process_port_change(p
, error
, devname
);
1203 if (time_msec() >= p
->next_in_band_update
) {
1204 update_in_band_remotes(p
);
1206 in_band_run(p
->in_band
);
1209 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, node
, &p
->all_conns
) {
1213 /* Fail-open maintenance. Do this after processing the ofconns since
1214 * fail-open checks the status of the controller rconn. */
1216 fail_open_run(p
->fail_open
);
1219 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1220 struct vconn
*vconn
;
1223 retval
= pvconn_accept(ofservice
->pvconn
, OFP_VERSION
, &vconn
);
1225 struct rconn
*rconn
;
1228 rconn
= rconn_create(ofservice
->probe_interval
, 0);
1229 name
= ofconn_make_name(p
, vconn_get_name(vconn
));
1230 rconn_connect_unreliably(rconn
, vconn
, name
);
1233 ofconn
= ofconn_create(p
, rconn
, OFCONN_SERVICE
);
1234 ofconn_set_rate_limit(ofconn
, ofservice
->rate_limit
,
1235 ofservice
->burst_limit
);
1236 } else if (retval
!= EAGAIN
) {
1237 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1241 for (i
= 0; i
< p
->n_snoops
; i
++) {
1242 struct vconn
*vconn
;
1245 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1247 add_snooper(p
, vconn
);
1248 } else if (retval
!= EAGAIN
) {
1249 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1253 if (time_msec() >= p
->next_expiration
) {
1254 int delay
= ofproto_expire(p
);
1255 p
->next_expiration
= time_msec() + delay
;
1256 COVERAGE_INC(ofproto_expiration
);
1260 netflow_run(p
->netflow
);
1263 ofproto_sflow_run(p
->sflow
);
1270 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1272 /* Figure out what we need to revalidate now, if anything. */
1273 struct tag_set revalidate_set
= p
->revalidate_set
;
1274 if (p
->need_revalidate
) {
1275 revalidate_all
= true;
1278 /* Clear the revalidation flags. */
1279 tag_set_init(&p
->revalidate_set
);
1280 p
->need_revalidate
= false;
1282 /* Now revalidate if there's anything to do. */
1283 if (revalidate_all
|| !tag_set_is_empty(&revalidate_set
)) {
1284 struct facet
*facet
, *next
;
1286 HMAP_FOR_EACH_SAFE (facet
, next
, hmap_node
, &p
->facets
) {
1288 || tag_set_intersects(&revalidate_set
, facet
->tags
)) {
1289 facet_revalidate(p
, facet
);
1298 ofproto_wait(struct ofproto
*p
)
1300 struct ofservice
*ofservice
;
1301 struct ofconn
*ofconn
;
1304 dpif_recv_wait(p
->dpif
);
1305 dpif_port_poll_wait(p
->dpif
);
1306 netdev_monitor_poll_wait(p
->netdev_monitor
);
1307 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1308 ofconn_wait(ofconn
);
1311 poll_timer_wait_until(p
->next_in_band_update
);
1312 in_band_wait(p
->in_band
);
1315 fail_open_wait(p
->fail_open
);
1318 ofproto_sflow_wait(p
->sflow
);
1320 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1321 poll_immediate_wake();
1323 if (p
->need_revalidate
) {
1324 /* Shouldn't happen, but if it does just go around again. */
1325 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1326 poll_immediate_wake();
1327 } else if (p
->next_expiration
!= LLONG_MAX
) {
1328 poll_timer_wait_until(p
->next_expiration
);
1330 HMAP_FOR_EACH (ofservice
, node
, &p
->services
) {
1331 pvconn_wait(ofservice
->pvconn
);
1333 for (i
= 0; i
< p
->n_snoops
; i
++) {
1334 pvconn_wait(p
->snoops
[i
]);
1339 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1341 tag_set_add(&ofproto
->revalidate_set
, tag
);
1345 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1347 return &ofproto
->revalidate_set
;
1351 ofproto_is_alive(const struct ofproto
*p
)
1353 return !hmap_is_empty(&p
->controllers
);
1356 /* Deletes port number 'odp_port' from the datapath for 'ofproto'.
1358 * This is almost the same as calling dpif_port_del() directly on the
1359 * datapath, but it also makes 'ofproto' close its open netdev for the port
1360 * (if any). This makes it possible to create a new netdev of a different
1361 * type under the same name, which otherwise the netdev library would refuse
1362 * to do because of the conflict. (The netdev would eventually get closed on
1363 * the next trip through ofproto_run(), but this interface is more direct.)
1365 * Returns 0 if successful, otherwise a positive errno. */
1367 ofproto_port_del(struct ofproto
*ofproto
, uint16_t odp_port
)
1369 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1370 const char *name
= ofport
? ofport
->opp
.name
: "<unknown>";
1373 error
= dpif_port_del(ofproto
->dpif
, odp_port
);
1375 VLOG_ERR("%s: failed to remove port %"PRIu16
" (%s) interface (%s)",
1376 dpif_name(ofproto
->dpif
), odp_port
, name
, strerror(error
));
1377 } else if (ofport
) {
1378 /* 'name' is ofport->opp.name and update_port() is going to destroy
1379 * 'ofport'. Just in case update_port() refers to 'name' after it
1380 * destroys 'ofport', make a copy of it around the update_port()
1382 char *devname
= xstrdup(name
);
1383 update_port(ofproto
, devname
);
1389 /* Checks if 'ofproto' thinks 'odp_port' should be included in floods. Returns
1390 * true if 'odp_port' exists and should be included, false otherwise. */
1392 ofproto_port_is_floodable(struct ofproto
*ofproto
, uint16_t odp_port
)
1394 struct ofport
*ofport
= get_port(ofproto
, odp_port
);
1395 return ofport
&& !(ofport
->opp
.config
& OFPPC_NO_FLOOD
);
1399 ofproto_send_packet(struct ofproto
*p
, const struct flow
*flow
,
1400 const union ofp_action
*actions
, size_t n_actions
,
1401 const struct ofpbuf
*packet
)
1403 struct action_xlate_ctx ctx
;
1404 struct ofpbuf
*odp_actions
;
1406 action_xlate_ctx_init(&ctx
, p
, flow
, packet
);
1407 odp_actions
= xlate_actions(&ctx
, actions
, n_actions
);
1409 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1411 dpif_execute(p
->dpif
, odp_actions
->data
, odp_actions
->size
, packet
);
1413 ofpbuf_delete(odp_actions
);
1418 /* Adds a flow to the OpenFlow flow table in 'p' that matches 'cls_rule' and
1419 * performs the 'n_actions' actions in 'actions'. The new flow will not
1422 * If cls_rule->priority is in the range of priorities supported by OpenFlow
1423 * (0...65535, inclusive) then the flow will be visible to OpenFlow
1424 * controllers; otherwise, it will be hidden.
1426 * The caller retains ownership of 'cls_rule' and 'actions'. */
1428 ofproto_add_flow(struct ofproto
*p
, const struct cls_rule
*cls_rule
,
1429 const union ofp_action
*actions
, size_t n_actions
)
1432 rule
= rule_create(cls_rule
, actions
, n_actions
, 0, 0, 0, false);
1433 rule_insert(p
, rule
);
1437 ofproto_delete_flow(struct ofproto
*ofproto
, const struct cls_rule
*target
)
1441 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1444 rule_remove(ofproto
, rule
);
1449 ofproto_flush_flows(struct ofproto
*ofproto
)
1451 struct facet
*facet
, *next_facet
;
1452 struct rule
*rule
, *next_rule
;
1453 struct cls_cursor cursor
;
1455 COVERAGE_INC(ofproto_flush
);
1457 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
1458 /* Mark the facet as not installed so that facet_remove() doesn't
1459 * bother trying to uninstall it. There is no point in uninstalling it
1460 * individually since we are about to blow away all the facets with
1461 * dpif_flow_flush(). */
1462 facet
->installed
= false;
1463 facet_remove(ofproto
, facet
);
1466 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
1467 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
1468 rule_remove(ofproto
, rule
);
1471 dpif_flow_flush(ofproto
->dpif
);
1472 if (ofproto
->in_band
) {
1473 in_band_flushed(ofproto
->in_band
);
1475 if (ofproto
->fail_open
) {
1476 fail_open_flushed(ofproto
->fail_open
);
1481 reinit_ports(struct ofproto
*p
)
1483 struct svec devnames
;
1484 struct ofport
*ofport
;
1485 struct odp_port
*odp_ports
;
1489 COVERAGE_INC(ofproto_reinit_ports
);
1491 svec_init(&devnames
);
1492 HMAP_FOR_EACH (ofport
, hmap_node
, &p
->ports
) {
1493 svec_add (&devnames
, ofport
->opp
.name
);
1495 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1496 for (i
= 0; i
< n_odp_ports
; i
++) {
1497 svec_add (&devnames
, odp_ports
[i
].devname
);
1501 svec_sort_unique(&devnames
);
1502 for (i
= 0; i
< devnames
.n
; i
++) {
1503 update_port(p
, devnames
.names
[i
]);
1505 svec_destroy(&devnames
);
1508 static struct ofport
*
1509 make_ofport(const struct odp_port
*odp_port
)
1511 struct netdev_options netdev_options
;
1512 enum netdev_flags flags
;
1513 struct ofport
*ofport
;
1514 struct netdev
*netdev
;
1517 memset(&netdev_options
, 0, sizeof netdev_options
);
1518 netdev_options
.name
= odp_port
->devname
;
1519 netdev_options
.type
= odp_port
->type
;
1520 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1522 error
= netdev_open(&netdev_options
, &netdev
);
1524 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1525 "cannot be opened (%s)",
1526 odp_port
->devname
, odp_port
->port
,
1527 odp_port
->devname
, strerror(error
));
1531 ofport
= xmalloc(sizeof *ofport
);
1532 ofport
->netdev
= netdev
;
1533 ofport
->odp_port
= odp_port
->port
;
1534 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1535 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1536 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1537 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1538 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1540 netdev_get_flags(netdev
, &flags
);
1541 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1543 ofport
->opp
.state
= netdev_get_carrier(netdev
) ? 0 : OFPPS_LINK_DOWN
;
1545 netdev_get_features(netdev
,
1546 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1547 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1552 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1554 if (get_port(p
, odp_port
->port
)) {
1555 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1558 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1559 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1568 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1570 const struct ofp_phy_port
*a
= &a_
->opp
;
1571 const struct ofp_phy_port
*b
= &b_
->opp
;
1573 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1574 return (a
->port_no
== b
->port_no
1575 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1576 && !strcmp(a
->name
, b
->name
)
1577 && a
->state
== b
->state
1578 && a
->config
== b
->config
1579 && a
->curr
== b
->curr
1580 && a
->advertised
== b
->advertised
1581 && a
->supported
== b
->supported
1582 && a
->peer
== b
->peer
);
1586 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1589 /* XXX Should limit the number of queued port status change messages. */
1590 struct ofconn
*ofconn
;
1591 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
1592 struct ofp_port_status
*ops
;
1595 /* Primary controllers, even slaves, should always get port status
1596 updates. Otherwise obey ofconn_receives_async_msgs(). */
1597 if (ofconn
->type
!= OFCONN_PRIMARY
1598 && !ofconn_receives_async_msgs(ofconn
)) {
1602 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1603 ops
->reason
= reason
;
1604 ops
->desc
= ofport
->opp
;
1605 hton_ofp_phy_port(&ops
->desc
);
1606 queue_tx(b
, ofconn
, NULL
);
1611 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1613 const char *netdev_name
= ofport
->opp
.name
;
1615 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1616 hmap_insert(&p
->ports
, &ofport
->hmap_node
, hash_int(ofport
->odp_port
, 0));
1617 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1619 ofproto_sflow_add_port(p
->sflow
, ofport
->odp_port
, netdev_name
);
1624 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1626 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1627 hmap_remove(&p
->ports
, &ofport
->hmap_node
);
1628 shash_delete(&p
->port_by_name
,
1629 shash_find(&p
->port_by_name
, ofport
->opp
.name
));
1631 ofproto_sflow_del_port(p
->sflow
, ofport
->odp_port
);
1636 ofport_free(struct ofport
*ofport
)
1639 netdev_close(ofport
->netdev
);
1644 static struct ofport
*
1645 get_port(const struct ofproto
*ofproto
, uint16_t odp_port
)
1647 struct ofport
*port
;
1649 HMAP_FOR_EACH_IN_BUCKET (port
, hmap_node
,
1650 hash_int(odp_port
, 0), &ofproto
->ports
) {
1651 if (port
->odp_port
== odp_port
) {
1659 update_port(struct ofproto
*p
, const char *devname
)
1661 struct odp_port odp_port
;
1662 struct ofport
*old_ofport
;
1663 struct ofport
*new_ofport
;
1666 COVERAGE_INC(ofproto_update_port
);
1668 /* Query the datapath for port information. */
1669 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1671 /* Find the old ofport. */
1672 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1675 /* There's no port named 'devname' but there might be a port with
1676 * the same port number. This could happen if a port is deleted
1677 * and then a new one added in its place very quickly, or if a port
1678 * is renamed. In the former case we want to send an OFPPR_DELETE
1679 * and an OFPPR_ADD, and in the latter case we want to send a
1680 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1681 * the old port's ifindex against the new port, or perhaps less
1682 * reliably but more portably by comparing the old port's MAC
1683 * against the new port's MAC. However, this code isn't that smart
1684 * and always sends an OFPPR_MODIFY (XXX). */
1685 old_ofport
= get_port(p
, odp_port
.port
);
1687 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1688 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1689 "%s", strerror(error
));
1693 /* Create a new ofport. */
1694 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1696 /* Eliminate a few pathological cases. */
1697 if (!old_ofport
&& !new_ofport
) {
1699 } else if (old_ofport
&& new_ofport
) {
1700 /* Most of the 'config' bits are OpenFlow soft state, but
1701 * OFPPC_PORT_DOWN is maintained by the kernel. So transfer the
1702 * OpenFlow bits from old_ofport. (make_ofport() only sets
1703 * OFPPC_PORT_DOWN and leaves the other bits 0.) */
1704 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1706 if (ofport_equal(old_ofport
, new_ofport
)) {
1707 /* False alarm--no change. */
1708 ofport_free(new_ofport
);
1713 /* Now deal with the normal cases. */
1715 ofport_remove(p
, old_ofport
);
1718 ofport_install(p
, new_ofport
);
1720 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1721 (!old_ofport
? OFPPR_ADD
1722 : !new_ofport
? OFPPR_DELETE
1724 ofport_free(old_ofport
);
1728 init_ports(struct ofproto
*p
)
1730 struct odp_port
*ports
;
1735 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1740 for (i
= 0; i
< n_ports
; i
++) {
1741 const struct odp_port
*odp_port
= &ports
[i
];
1742 if (!ofport_conflicts(p
, odp_port
)) {
1743 struct ofport
*ofport
= make_ofport(odp_port
);
1745 ofport_install(p
, ofport
);
1753 static struct ofconn
*
1754 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1756 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1757 ofconn
->ofproto
= p
;
1758 list_push_back(&p
->all_conns
, &ofconn
->node
);
1759 ofconn
->rconn
= rconn
;
1760 ofconn
->type
= type
;
1761 ofconn
->flow_format
= NXFF_OPENFLOW10
;
1762 ofconn
->role
= NX_ROLE_OTHER
;
1763 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1764 ofconn
->pktbuf
= NULL
;
1765 ofconn
->miss_send_len
= 0;
1766 ofconn
->reply_counter
= rconn_packet_counter_create ();
1771 ofconn_destroy(struct ofconn
*ofconn
)
1773 if (ofconn
->type
== OFCONN_PRIMARY
) {
1774 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1776 discovery_destroy(ofconn
->discovery
);
1778 list_remove(&ofconn
->node
);
1779 switch_status_unregister(ofconn
->ss
);
1780 rconn_destroy(ofconn
->rconn
);
1781 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1782 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1783 pktbuf_destroy(ofconn
->pktbuf
);
1788 ofconn_run(struct ofconn
*ofconn
)
1790 struct ofproto
*p
= ofconn
->ofproto
;
1794 if (ofconn
->discovery
) {
1795 char *controller_name
;
1796 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1797 discovery_question_connectivity(ofconn
->discovery
);
1799 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1800 if (controller_name
) {
1801 char *ofconn_name
= ofconn_make_name(p
, controller_name
);
1802 rconn_connect(ofconn
->rconn
, controller_name
, ofconn_name
);
1805 rconn_disconnect(ofconn
->rconn
);
1810 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1811 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1814 rconn_run(ofconn
->rconn
);
1816 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1817 /* Limit the number of iterations to prevent other tasks from
1819 for (iteration
= 0; iteration
< 50; iteration
++) {
1820 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1825 fail_open_maybe_recover(p
->fail_open
);
1827 handle_openflow(ofconn
, of_msg
);
1828 ofpbuf_delete(of_msg
);
1832 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1833 ofconn_destroy(ofconn
);
1838 ofconn_wait(struct ofconn
*ofconn
)
1842 if (ofconn
->discovery
) {
1843 discovery_wait(ofconn
->discovery
);
1845 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1846 pinsched_wait(ofconn
->schedulers
[i
]);
1848 rconn_run_wait(ofconn
->rconn
);
1849 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1850 rconn_recv_wait(ofconn
->rconn
);
1852 COVERAGE_INC(ofproto_ofconn_stuck
);
1856 /* Returns true if 'ofconn' should receive asynchronous messages. */
1858 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1860 if (ofconn
->type
== OFCONN_PRIMARY
) {
1861 /* Primary controllers always get asynchronous messages unless they
1862 * have configured themselves as "slaves". */
1863 return ofconn
->role
!= NX_ROLE_SLAVE
;
1865 /* Service connections don't get asynchronous messages unless they have
1866 * explicitly asked for them by setting a nonzero miss send length. */
1867 return ofconn
->miss_send_len
> 0;
1871 /* Returns a human-readable name for an OpenFlow connection between 'ofproto'
1872 * and 'target', suitable for use in log messages for identifying the
1875 * The name is dynamically allocated. The caller should free it (with free())
1876 * when it is no longer needed. */
1878 ofconn_make_name(const struct ofproto
*ofproto
, const char *target
)
1880 return xasprintf("%s<->%s", dpif_base_name(ofproto
->dpif
), target
);
1884 ofconn_set_rate_limit(struct ofconn
*ofconn
, int rate
, int burst
)
1888 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1889 struct pinsched
**s
= &ofconn
->schedulers
[i
];
1893 *s
= pinsched_create(rate
, burst
,
1894 ofconn
->ofproto
->switch_status
);
1896 pinsched_set_limits(*s
, rate
, burst
);
1899 pinsched_destroy(*s
);
1906 ofservice_reconfigure(struct ofservice
*ofservice
,
1907 const struct ofproto_controller
*c
)
1909 ofservice
->probe_interval
= c
->probe_interval
;
1910 ofservice
->rate_limit
= c
->rate_limit
;
1911 ofservice
->burst_limit
= c
->burst_limit
;
1914 /* Creates a new ofservice in 'ofproto'. Returns 0 if successful, otherwise a
1915 * positive errno value. */
1917 ofservice_create(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
1919 struct ofservice
*ofservice
;
1920 struct pvconn
*pvconn
;
1923 error
= pvconn_open(c
->target
, &pvconn
);
1928 ofservice
= xzalloc(sizeof *ofservice
);
1929 hmap_insert(&ofproto
->services
, &ofservice
->node
,
1930 hash_string(c
->target
, 0));
1931 ofservice
->pvconn
= pvconn
;
1933 ofservice_reconfigure(ofservice
, c
);
1939 ofservice_destroy(struct ofproto
*ofproto
, struct ofservice
*ofservice
)
1941 hmap_remove(&ofproto
->services
, &ofservice
->node
);
1942 pvconn_close(ofservice
->pvconn
);
1946 /* Finds and returns the ofservice within 'ofproto' that has the given
1947 * 'target', or a null pointer if none exists. */
1948 static struct ofservice
*
1949 ofservice_lookup(struct ofproto
*ofproto
, const char *target
)
1951 struct ofservice
*ofservice
;
1953 HMAP_FOR_EACH_WITH_HASH (ofservice
, node
, hash_string(target
, 0),
1954 &ofproto
->services
) {
1955 if (!strcmp(pvconn_get_name(ofservice
->pvconn
), target
)) {
1962 /* Returns true if 'rule' should be hidden from the controller.
1964 * Rules with priority higher than UINT16_MAX are set up by ofproto itself
1965 * (e.g. by in-band control) and are intentionally hidden from the
1968 rule_is_hidden(const struct rule
*rule
)
1970 return rule
->cr
.priority
> UINT16_MAX
;
1973 /* Creates and returns a new rule initialized as specified.
1975 * The caller is responsible for inserting the rule into the classifier (with
1976 * rule_insert()). */
1977 static struct rule
*
1978 rule_create(const struct cls_rule
*cls_rule
,
1979 const union ofp_action
*actions
, size_t n_actions
,
1980 uint16_t idle_timeout
, uint16_t hard_timeout
,
1981 ovs_be64 flow_cookie
, bool send_flow_removed
)
1983 struct rule
*rule
= xzalloc(sizeof *rule
);
1984 rule
->cr
= *cls_rule
;
1985 rule
->idle_timeout
= idle_timeout
;
1986 rule
->hard_timeout
= hard_timeout
;
1987 rule
->flow_cookie
= flow_cookie
;
1988 rule
->used
= rule
->created
= time_msec();
1989 rule
->send_flow_removed
= send_flow_removed
;
1990 list_init(&rule
->facets
);
1991 if (n_actions
> 0) {
1992 rule
->n_actions
= n_actions
;
1993 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1999 static struct rule
*
2000 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
2002 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
2006 rule_free(struct rule
*rule
)
2008 free(rule
->actions
);
2012 /* Destroys 'rule' and iterates through all of its facets and revalidates them,
2013 * destroying any that no longer has a rule (which is probably all of them).
2015 * The caller must have already removed 'rule' from the classifier. */
2017 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
2019 struct facet
*facet
, *next_facet
;
2020 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
2021 facet_revalidate(ofproto
, facet
);
2026 /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
2027 * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't
2030 rule_has_out_port(const struct rule
*rule
, ovs_be16 out_port
)
2032 const union ofp_action
*oa
;
2033 struct actions_iterator i
;
2035 if (out_port
== htons(OFPP_NONE
)) {
2038 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
2039 oa
= actions_next(&i
)) {
2040 if (action_outputs_to_port(oa
, out_port
)) {
2047 /* Executes, within 'ofproto', the 'n_actions' actions in 'actions' on
2048 * 'packet', which arrived on 'in_port'.
2050 * Takes ownership of 'packet'. */
2052 execute_odp_actions(struct ofproto
*ofproto
, uint16_t in_port
,
2053 const struct nlattr
*odp_actions
, unsigned int actions_len
,
2054 struct ofpbuf
*packet
)
2056 if (actions_len
== NLA_ALIGN(NLA_HDRLEN
+ sizeof(uint32_t))
2057 && odp_actions
->nla_type
== ODPAT_CONTROLLER
) {
2058 /* As an optimization, avoid a round-trip from userspace to kernel to
2059 * userspace. This also avoids possibly filling up kernel packet
2060 * buffers along the way. */
2061 struct odp_msg
*msg
;
2063 msg
= ofpbuf_push_uninit(packet
, sizeof *msg
);
2064 msg
->type
= _ODPL_ACTION_NR
;
2065 msg
->length
= sizeof(struct odp_msg
) + packet
->size
;
2066 msg
->port
= in_port
;
2068 msg
->arg
= nl_attr_get_u32(odp_actions
);
2070 send_packet_in(ofproto
, packet
);
2076 error
= dpif_execute(ofproto
->dpif
, odp_actions
, actions_len
, packet
);
2077 ofpbuf_delete(packet
);
2082 /* Executes the actions indicated by 'facet' on 'packet' and credits 'facet''s
2083 * statistics appropriately. 'packet' must have at least sizeof(struct
2084 * ofp_packet_in) bytes of headroom.
2086 * For correct results, 'packet' must actually be in 'facet''s flow; that is,
2087 * applying flow_extract() to 'packet' would yield the same flow as
2090 * 'facet' must have accurately composed ODP actions; that is, it must not be
2091 * in need of revalidation.
2093 * Takes ownership of 'packet'. */
2095 facet_execute(struct ofproto
*ofproto
, struct facet
*facet
,
2096 struct ofpbuf
*packet
)
2098 struct odp_flow_stats stats
;
2100 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2102 flow_extract_stats(&facet
->flow
, packet
, &stats
);
2103 if (execute_odp_actions(ofproto
, facet
->flow
.in_port
,
2104 facet
->actions
, facet
->actions_len
, packet
)) {
2105 facet_update_stats(ofproto
, facet
, &stats
);
2106 facet
->used
= time_msec();
2107 netflow_flow_update_time(ofproto
->netflow
,
2108 &facet
->nf_flow
, facet
->used
);
2112 /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s
2113 * statistics (or the statistics for one of its facets) appropriately.
2114 * 'packet' must have at least sizeof(struct ofp_packet_in) bytes of headroom.
2116 * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited
2117 * with statistics for 'packet' either way.
2119 * Takes ownership of 'packet'. */
2121 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
, uint16_t in_port
,
2122 struct ofpbuf
*packet
)
2124 struct action_xlate_ctx ctx
;
2125 struct ofpbuf
*odp_actions
;
2126 struct facet
*facet
;
2130 assert(ofpbuf_headroom(packet
) >= sizeof(struct ofp_packet_in
));
2132 flow_extract(packet
, 0, in_port
, &flow
);
2134 /* First look for a related facet. If we find one, account it to that. */
2135 facet
= facet_lookup_valid(ofproto
, &flow
);
2136 if (facet
&& facet
->rule
== rule
) {
2137 facet_execute(ofproto
, facet
, packet
);
2141 /* Otherwise, if 'rule' is in fact the correct rule for 'packet', then
2142 * create a new facet for it and use that. */
2143 if (rule_lookup(ofproto
, &flow
) == rule
) {
2144 facet
= facet_create(ofproto
, rule
, &flow
, packet
);
2145 facet_execute(ofproto
, facet
, packet
);
2146 facet_install(ofproto
, facet
, true);
2150 /* We can't account anything to a facet. If we were to try, then that
2151 * facet would have a non-matching rule, busting our invariants. */
2152 action_xlate_ctx_init(&ctx
, ofproto
, &flow
, packet
);
2153 odp_actions
= xlate_actions(&ctx
, rule
->actions
, rule
->n_actions
);
2154 size
= packet
->size
;
2155 if (execute_odp_actions(ofproto
, in_port
, odp_actions
->data
,
2156 odp_actions
->size
, packet
)) {
2157 rule
->used
= time_msec();
2158 rule
->packet_count
++;
2159 rule
->byte_count
+= size
;
2161 ofpbuf_delete(odp_actions
);
2164 /* Inserts 'rule' into 'p''s flow table. */
2166 rule_insert(struct ofproto
*p
, struct rule
*rule
)
2168 struct rule
*displaced_rule
;
2170 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
2171 if (displaced_rule
) {
2172 rule_destroy(p
, displaced_rule
);
2174 p
->need_revalidate
= true;
2177 /* Creates and returns a new facet within 'ofproto' owned by 'rule', given a
2178 * 'flow' and an example 'packet' within that flow.
2180 * The caller must already have determined that no facet with an identical
2181 * 'flow' exists in 'ofproto' and that 'flow' is the best match for 'rule' in
2182 * 'ofproto''s classifier table. */
2183 static struct facet
*
2184 facet_create(struct ofproto
*ofproto
, struct rule
*rule
,
2185 const struct flow
*flow
, const struct ofpbuf
*packet
)
2187 struct facet
*facet
;
2189 facet
= xzalloc(sizeof *facet
);
2190 facet
->used
= time_msec();
2191 hmap_insert(&ofproto
->facets
, &facet
->hmap_node
, flow_hash(flow
, 0));
2192 list_push_back(&rule
->facets
, &facet
->list_node
);
2194 facet
->flow
= *flow
;
2195 netflow_flow_init(&facet
->nf_flow
);
2196 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, facet
->used
);
2198 facet_make_actions(ofproto
, facet
, packet
);
2204 facet_free(struct facet
*facet
)
2206 free(facet
->actions
);
2210 /* Remove 'rule' from 'ofproto' and free up the associated memory:
2212 * - Removes 'rule' from the classifier.
2214 * - If 'rule' has facets, revalidates them (and possibly uninstalls and
2215 * destroys them), via rule_destroy().
2218 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
2220 COVERAGE_INC(ofproto_del_rule
);
2221 ofproto
->need_revalidate
= true;
2222 classifier_remove(&ofproto
->cls
, &rule
->cr
);
2223 rule_destroy(ofproto
, rule
);
2226 /* Remove 'facet' from 'ofproto' and free up the associated memory:
2228 * - If 'facet' was installed in the datapath, uninstalls it and updates its
2229 * rule's statistics, via facet_uninstall().
2231 * - Removes 'facet' from its rule and from ofproto->facets.
2234 facet_remove(struct ofproto
*ofproto
, struct facet
*facet
)
2236 facet_uninstall(ofproto
, facet
);
2237 facet_flush_stats(ofproto
, facet
);
2238 hmap_remove(&ofproto
->facets
, &facet
->hmap_node
);
2239 list_remove(&facet
->list_node
);
2243 /* Composes the ODP actions for 'facet' based on its rule's actions. */
2245 facet_make_actions(struct ofproto
*p
, struct facet
*facet
,
2246 const struct ofpbuf
*packet
)
2248 const struct rule
*rule
= facet
->rule
;
2249 struct ofpbuf
*odp_actions
;
2250 struct action_xlate_ctx ctx
;
2252 action_xlate_ctx_init(&ctx
, p
, &facet
->flow
, packet
);
2253 odp_actions
= xlate_actions(&ctx
, rule
->actions
, rule
->n_actions
);
2255 if (facet
->actions_len
!= odp_actions
->size
2256 || memcmp(facet
->actions
, odp_actions
->data
, odp_actions
->size
)) {
2257 free(facet
->actions
);
2258 facet
->actions_len
= odp_actions
->size
;
2259 facet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
2262 ofpbuf_delete(odp_actions
);
2266 facet_put__(struct ofproto
*ofproto
, struct facet
*facet
, int flags
,
2267 struct odp_flow_put
*put
)
2269 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
2270 odp_flow_key_from_flow(&put
->flow
.key
, &facet
->flow
);
2271 put
->flow
.actions
= facet
->actions
;
2272 put
->flow
.actions_len
= facet
->actions_len
;
2273 put
->flow
.flags
= 0;
2275 return dpif_flow_put(ofproto
->dpif
, put
);
2278 /* If 'facet' is installable, inserts or re-inserts it into 'p''s datapath. If
2279 * 'zero_stats' is true, clears any existing statistics from the datapath for
2282 facet_install(struct ofproto
*p
, struct facet
*facet
, bool zero_stats
)
2284 if (facet
->may_install
) {
2285 struct odp_flow_put put
;
2288 flags
= ODPPF_CREATE
| ODPPF_MODIFY
;
2290 flags
|= ODPPF_ZERO_STATS
;
2292 if (!facet_put__(p
, facet
, flags
, &put
)) {
2293 facet
->installed
= true;
2298 /* Ensures that the bytes in 'facet', plus 'extra_bytes', have been passed up
2299 * to the accounting hook function in the ofhooks structure. */
2301 facet_account(struct ofproto
*ofproto
,
2302 struct facet
*facet
, uint64_t extra_bytes
)
2304 uint64_t total_bytes
= facet
->byte_count
+ extra_bytes
;
2306 if (ofproto
->ofhooks
->account_flow_cb
2307 && total_bytes
> facet
->accounted_bytes
)
2309 ofproto
->ofhooks
->account_flow_cb(
2310 &facet
->flow
, facet
->tags
, facet
->actions
, facet
->actions_len
,
2311 total_bytes
- facet
->accounted_bytes
, ofproto
->aux
);
2312 facet
->accounted_bytes
= total_bytes
;
2316 /* If 'rule' is installed in the datapath, uninstalls it. */
2318 facet_uninstall(struct ofproto
*p
, struct facet
*facet
)
2320 if (facet
->installed
) {
2321 struct odp_flow odp_flow
;
2323 odp_flow_key_from_flow(&odp_flow
.key
, &facet
->flow
);
2324 odp_flow
.actions
= NULL
;
2325 odp_flow
.actions_len
= 0;
2327 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2328 facet_update_stats(p
, facet
, &odp_flow
.stats
);
2330 facet
->installed
= false;
2334 /* Returns true if the only action for 'facet' is to send to the controller.
2335 * (We don't report NetFlow expiration messages for such facets because they
2336 * are just part of the control logic for the network, not real traffic). */
2338 facet_is_controller_flow(struct facet
*facet
)
2341 && facet
->rule
->n_actions
== 1
2342 && action_outputs_to_port(&facet
->rule
->actions
[0],
2343 htons(OFPP_CONTROLLER
)));
2346 /* Folds all of 'facet''s statistics into its rule. Also updates the
2347 * accounting ofhook and emits a NetFlow expiration if appropriate. */
2349 facet_flush_stats(struct ofproto
*ofproto
, struct facet
*facet
)
2351 facet_account(ofproto
, facet
, 0);
2353 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
)) {
2354 struct ofexpired expired
;
2355 expired
.flow
= facet
->flow
;
2356 expired
.packet_count
= facet
->packet_count
;
2357 expired
.byte_count
= facet
->byte_count
;
2358 expired
.used
= facet
->used
;
2359 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
2362 facet
->rule
->packet_count
+= facet
->packet_count
;
2363 facet
->rule
->byte_count
+= facet
->byte_count
;
2365 /* Reset counters to prevent double counting if 'facet' ever gets
2367 facet
->packet_count
= 0;
2368 facet
->byte_count
= 0;
2369 facet
->accounted_bytes
= 0;
2371 netflow_flow_clear(&facet
->nf_flow
);
2374 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2375 * Returns it if found, otherwise a null pointer.
2377 * The returned facet might need revalidation; use facet_lookup_valid()
2378 * instead if that is important. */
2379 static struct facet
*
2380 facet_find(struct ofproto
*ofproto
, const struct flow
*flow
)
2382 struct facet
*facet
;
2384 HMAP_FOR_EACH_WITH_HASH (facet
, hmap_node
, flow_hash(flow
, 0),
2386 if (flow_equal(flow
, &facet
->flow
)) {
2394 /* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
2395 * Returns it if found, otherwise a null pointer.
2397 * The returned facet is guaranteed to be valid. */
2398 static struct facet
*
2399 facet_lookup_valid(struct ofproto
*ofproto
, const struct flow
*flow
)
2401 struct facet
*facet
= facet_find(ofproto
, flow
);
2403 /* The facet we found might not be valid, since we could be in need of
2404 * revalidation. If it is not valid, don't return it. */
2406 && ofproto
->need_revalidate
2407 && !facet_revalidate(ofproto
, facet
)) {
2408 COVERAGE_INC(ofproto_invalidated
);
2415 /* Re-searches 'ofproto''s classifier for a rule matching 'facet':
2417 * - If the rule found is different from 'facet''s current rule, moves
2418 * 'facet' to the new rule and recompiles its actions.
2420 * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
2421 * where it is and recompiles its actions anyway.
2423 * - If there is none, destroys 'facet'.
2425 * Returns true if 'facet' still exists, false if it has been destroyed. */
2427 facet_revalidate(struct ofproto
*ofproto
, struct facet
*facet
)
2429 struct action_xlate_ctx ctx
;
2430 struct ofpbuf
*odp_actions
;
2431 struct rule
*new_rule
;
2432 bool actions_changed
;
2434 COVERAGE_INC(facet_revalidate
);
2436 /* Determine the new rule. */
2437 new_rule
= rule_lookup(ofproto
, &facet
->flow
);
2439 /* No new rule, so delete the facet. */
2440 facet_remove(ofproto
, facet
);
2444 /* Calculate new ODP actions.
2446 * We do not modify any 'facet' state yet, because we might need to, e.g.,
2447 * emit a NetFlow expiration and, if so, we need to have the old state
2448 * around to properly compose it. */
2449 action_xlate_ctx_init(&ctx
, ofproto
, &facet
->flow
, NULL
);
2450 odp_actions
= xlate_actions(&ctx
, new_rule
->actions
, new_rule
->n_actions
);
2451 actions_changed
= (facet
->actions_len
!= odp_actions
->size
2452 || memcmp(facet
->actions
, odp_actions
->data
,
2453 facet
->actions_len
));
2455 /* If the ODP actions changed or the installability changed, then we need
2456 * to talk to the datapath. */
2457 if (actions_changed
|| facet
->may_install
!= facet
->installed
) {
2458 if (facet
->may_install
) {
2459 struct odp_flow_put put
;
2461 memset(&put
.flow
.stats
, 0, sizeof put
.flow
.stats
);
2462 odp_flow_key_from_flow(&put
.flow
.key
, &facet
->flow
);
2463 put
.flow
.actions
= odp_actions
->data
;
2464 put
.flow
.actions_len
= odp_actions
->size
;
2466 put
.flags
= ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
;
2467 dpif_flow_put(ofproto
->dpif
, &put
);
2469 facet_update_stats(ofproto
, facet
, &put
.flow
.stats
);
2471 facet_uninstall(ofproto
, facet
);
2474 /* The datapath flow is gone or has zeroed stats, so push stats out of
2475 * 'facet' into 'rule'. */
2476 facet_flush_stats(ofproto
, facet
);
2479 ofpbuf_delete(odp_actions
);
2481 /* Update 'facet' now that we've taken care of all the old state. */
2482 facet
->tags
= ctx
.tags
;
2483 facet
->nf_flow
.output_iface
= ctx
.nf_output_iface
;
2484 facet
->may_install
= ctx
.may_set_up_flow
;
2485 if (actions_changed
) {
2486 free(facet
->actions
);
2487 facet
->actions_len
= odp_actions
->size
;
2488 facet
->actions
= xmemdup(odp_actions
->data
, odp_actions
->size
);
2490 if (facet
->rule
!= new_rule
) {
2491 COVERAGE_INC(facet_changed_rule
);
2492 list_remove(&facet
->list_node
);
2493 list_push_back(&new_rule
->facets
, &facet
->list_node
);
2494 facet
->rule
= new_rule
;
2495 facet
->used
= new_rule
->created
;
2502 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2503 struct rconn_packet_counter
*counter
)
2505 update_openflow_length(msg
);
2506 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2512 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2515 struct ofpbuf
*buf
= make_ofp_error_msg(error
, oh
);
2517 COVERAGE_INC(ofproto_error
);
2518 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2523 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2525 opp
->port_no
= htons(opp
->port_no
);
2526 opp
->config
= htonl(opp
->config
);
2527 opp
->state
= htonl(opp
->state
);
2528 opp
->curr
= htonl(opp
->curr
);
2529 opp
->advertised
= htonl(opp
->advertised
);
2530 opp
->supported
= htonl(opp
->supported
);
2531 opp
->peer
= htonl(opp
->peer
);
2535 handle_echo_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2537 queue_tx(make_echo_reply(oh
), ofconn
, ofconn
->reply_counter
);
2542 handle_features_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2544 struct ofp_switch_features
*osf
;
2546 struct ofport
*port
;
2548 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2549 osf
->datapath_id
= htonll(ofconn
->ofproto
->datapath_id
);
2550 osf
->n_buffers
= htonl(pktbuf_capacity());
2552 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2553 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2554 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2555 (1u << OFPAT_SET_VLAN_VID
) |
2556 (1u << OFPAT_SET_VLAN_PCP
) |
2557 (1u << OFPAT_STRIP_VLAN
) |
2558 (1u << OFPAT_SET_DL_SRC
) |
2559 (1u << OFPAT_SET_DL_DST
) |
2560 (1u << OFPAT_SET_NW_SRC
) |
2561 (1u << OFPAT_SET_NW_DST
) |
2562 (1u << OFPAT_SET_NW_TOS
) |
2563 (1u << OFPAT_SET_TP_SRC
) |
2564 (1u << OFPAT_SET_TP_DST
) |
2565 (1u << OFPAT_ENQUEUE
));
2567 HMAP_FOR_EACH (port
, hmap_node
, &ofconn
->ofproto
->ports
) {
2568 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2571 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2576 handle_get_config_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2579 struct ofp_switch_config
*osc
;
2583 /* Figure out flags. */
2584 dpif_get_drop_frags(ofconn
->ofproto
->dpif
, &drop_frags
);
2585 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2588 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2589 osc
->flags
= htons(flags
);
2590 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2591 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2597 handle_set_config(struct ofconn
*ofconn
, const struct ofp_switch_config
*osc
)
2599 uint16_t flags
= ntohs(osc
->flags
);
2601 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2602 switch (flags
& OFPC_FRAG_MASK
) {
2603 case OFPC_FRAG_NORMAL
:
2604 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, false);
2606 case OFPC_FRAG_DROP
:
2607 dpif_set_drop_frags(ofconn
->ofproto
->dpif
, true);
2610 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2616 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2621 /* Maximum depth of flow table recursion (due to NXAST_RESUBMIT actions) in a
2622 * flow translation. */
2623 #define MAX_RESUBMIT_RECURSION 8
2625 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2626 struct action_xlate_ctx
*ctx
);
2629 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2631 const struct ofport
*ofport
= get_port(ctx
->ofproto
, port
);
2634 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2635 /* Forwarding disabled on port. */
2640 * We don't have an ofport record for this port, but it doesn't hurt to
2641 * allow forwarding to it anyhow. Maybe such a port will appear later
2642 * and we're pre-populating the flow table.
2646 nl_msg_put_u32(ctx
->odp_actions
, ODPAT_OUTPUT
, port
);
2647 ctx
->nf_output_iface
= port
;
2650 static struct rule
*
2651 rule_lookup(struct ofproto
*ofproto
, const struct flow
*flow
)
2653 return rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2657 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2659 if (ctx
->recurse
< MAX_RESUBMIT_RECURSION
) {
2660 uint16_t old_in_port
;
2663 /* Look up a flow with 'in_port' as the input port. Then restore the
2664 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2665 * have surprising behavior). */
2666 old_in_port
= ctx
->flow
.in_port
;
2667 ctx
->flow
.in_port
= in_port
;
2668 rule
= rule_lookup(ctx
->ofproto
, &ctx
->flow
);
2669 ctx
->flow
.in_port
= old_in_port
;
2671 if (ctx
->resubmit_hook
) {
2672 ctx
->resubmit_hook(ctx
, rule
);
2677 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2681 struct vlog_rate_limit recurse_rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2683 VLOG_ERR_RL(&recurse_rl
, "NXAST_RESUBMIT recursed over %d times",
2684 MAX_RESUBMIT_RECURSION
);
2689 flood_packets(struct ofproto
*ofproto
, uint16_t odp_in_port
, uint32_t mask
,
2690 uint16_t *nf_output_iface
, struct ofpbuf
*odp_actions
)
2692 struct ofport
*ofport
;
2694 HMAP_FOR_EACH (ofport
, hmap_node
, &ofproto
->ports
) {
2695 uint16_t odp_port
= ofport
->odp_port
;
2696 if (odp_port
!= odp_in_port
&& !(ofport
->opp
.config
& mask
)) {
2697 nl_msg_put_u32(odp_actions
, ODPAT_OUTPUT
, odp_port
);
2700 *nf_output_iface
= NF_OUT_FLOOD
;
2704 xlate_output_action__(struct action_xlate_ctx
*ctx
,
2705 uint16_t port
, uint16_t max_len
)
2708 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2710 ctx
->nf_output_iface
= NF_OUT_DROP
;
2714 add_output_action(ctx
, ctx
->flow
.in_port
);
2717 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2720 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2721 ctx
->odp_actions
, &ctx
->tags
,
2722 &ctx
->nf_output_iface
,
2723 ctx
->ofproto
->aux
)) {
2724 COVERAGE_INC(ofproto_uninstallable
);
2725 ctx
->may_set_up_flow
= false;
2729 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, OFPPC_NO_FLOOD
,
2730 &ctx
->nf_output_iface
, ctx
->odp_actions
);
2733 flood_packets(ctx
->ofproto
, ctx
->flow
.in_port
, 0,
2734 &ctx
->nf_output_iface
, ctx
->odp_actions
);
2736 case OFPP_CONTROLLER
:
2737 nl_msg_put_u32(ctx
->odp_actions
, ODPAT_CONTROLLER
, max_len
);
2740 add_output_action(ctx
, ODPP_LOCAL
);
2743 odp_port
= ofp_port_to_odp_port(port
);
2744 if (odp_port
!= ctx
->flow
.in_port
) {
2745 add_output_action(ctx
, odp_port
);
2750 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2751 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2752 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2753 ctx
->nf_output_iface
= prev_nf_output_iface
;
2754 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2755 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2756 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2761 xlate_output_action(struct action_xlate_ctx
*ctx
,
2762 const struct ofp_action_output
*oao
)
2764 xlate_output_action__(ctx
, ntohs(oao
->port
), ntohs(oao
->max_len
));
2767 /* If the final ODP action in 'ctx' is "pop priority", drop it, as an
2768 * optimization, because we're going to add another action that sets the
2769 * priority immediately after, or because there are no actions following the
2772 remove_pop_action(struct action_xlate_ctx
*ctx
)
2774 if (ctx
->odp_actions
->size
== ctx
->last_pop_priority
) {
2775 ctx
->odp_actions
->size
-= NLA_ALIGN(NLA_HDRLEN
);
2776 ctx
->last_pop_priority
= -1;
2781 add_pop_action(struct action_xlate_ctx
*ctx
)
2783 if (ctx
->odp_actions
->size
!= ctx
->last_pop_priority
) {
2784 nl_msg_put_flag(ctx
->odp_actions
, ODPAT_POP_PRIORITY
);
2785 ctx
->last_pop_priority
= ctx
->odp_actions
->size
;
2790 xlate_enqueue_action(struct action_xlate_ctx
*ctx
,
2791 const struct ofp_action_enqueue
*oae
)
2793 uint16_t ofp_port
, odp_port
;
2797 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(oae
->queue_id
),
2800 /* Fall back to ordinary output action. */
2801 xlate_output_action__(ctx
, ntohs(oae
->port
), 0);
2805 /* Figure out ODP output port. */
2806 ofp_port
= ntohs(oae
->port
);
2807 if (ofp_port
!= OFPP_IN_PORT
) {
2808 odp_port
= ofp_port_to_odp_port(ofp_port
);
2810 odp_port
= ctx
->flow
.in_port
;
2813 /* Add ODP actions. */
2814 remove_pop_action(ctx
);
2815 nl_msg_put_u32(ctx
->odp_actions
, ODPAT_SET_PRIORITY
, priority
);
2816 add_output_action(ctx
, odp_port
);
2817 add_pop_action(ctx
);
2819 /* Update NetFlow output port. */
2820 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2821 ctx
->nf_output_iface
= odp_port
;
2822 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2823 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2828 xlate_set_queue_action(struct action_xlate_ctx
*ctx
,
2829 const struct nx_action_set_queue
*nasq
)
2834 error
= dpif_queue_to_priority(ctx
->ofproto
->dpif
, ntohl(nasq
->queue_id
),
2837 /* Couldn't translate queue to a priority, so ignore. A warning
2838 * has already been logged. */
2842 remove_pop_action(ctx
);
2843 nl_msg_put_u32(ctx
->odp_actions
, ODPAT_SET_PRIORITY
, priority
);
2847 xlate_set_dl_tci(struct action_xlate_ctx
*ctx
)
2849 ovs_be16 tci
= ctx
->flow
.vlan_tci
;
2850 if (!(tci
& htons(VLAN_CFI
))) {
2851 nl_msg_put_flag(ctx
->odp_actions
, ODPAT_STRIP_VLAN
);
2853 nl_msg_put_be16(ctx
->odp_actions
, ODPAT_SET_DL_TCI
,
2854 tci
& ~htons(VLAN_CFI
));
2859 xlate_reg_move_action(struct action_xlate_ctx
*ctx
,
2860 const struct nx_action_reg_move
*narm
)
2862 ovs_be16 old_tci
= ctx
->flow
.vlan_tci
;
2864 nxm_execute_reg_move(narm
, &ctx
->flow
);
2866 if (ctx
->flow
.vlan_tci
!= old_tci
) {
2867 xlate_set_dl_tci(ctx
);
2872 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2873 const struct nx_action_header
*nah
)
2875 const struct nx_action_resubmit
*nar
;
2876 const struct nx_action_set_tunnel
*nast
;
2877 const struct nx_action_set_queue
*nasq
;
2878 enum nx_action_subtype subtype
= ntohs(nah
->subtype
);
2880 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2882 case NXAST_RESUBMIT
:
2883 nar
= (const struct nx_action_resubmit
*) nah
;
2884 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2887 case NXAST_SET_TUNNEL
:
2888 nast
= (const struct nx_action_set_tunnel
*) nah
;
2889 nl_msg_put_be32(ctx
->odp_actions
, ODPAT_SET_TUNNEL
, nast
->tun_id
);
2890 ctx
->flow
.tun_id
= nast
->tun_id
;
2893 case NXAST_DROP_SPOOFED_ARP
:
2894 if (ctx
->flow
.dl_type
== htons(ETH_TYPE_ARP
)) {
2895 nl_msg_put_flag(ctx
->odp_actions
, ODPAT_DROP_SPOOFED_ARP
);
2899 case NXAST_SET_QUEUE
:
2900 nasq
= (const struct nx_action_set_queue
*) nah
;
2901 xlate_set_queue_action(ctx
, nasq
);
2904 case NXAST_POP_QUEUE
:
2905 add_pop_action(ctx
);
2908 case NXAST_REG_MOVE
:
2909 xlate_reg_move_action(ctx
, (const struct nx_action_reg_move
*) nah
);
2912 case NXAST_REG_LOAD
:
2913 nxm_execute_reg_load((const struct nx_action_reg_load
*) nah
,
2917 /* Nothing to do. */
2920 /* If you add a new action here that modifies flow data, don't forget to
2921 * update the flow key in ctx->flow at the same time. */
2923 case NXAST_SNAT__OBSOLETE
:
2925 VLOG_DBG_RL(&rl
, "unknown Nicira action type %d", (int) subtype
);
2931 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2932 struct action_xlate_ctx
*ctx
)
2934 struct actions_iterator iter
;
2935 const union ofp_action
*ia
;
2936 const struct ofport
*port
;
2938 port
= get_port(ctx
->ofproto
, ctx
->flow
.in_port
);
2939 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2940 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, eth_addr_stp
)
2941 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2942 /* Drop this flow. */
2946 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2947 enum ofp_action_type type
= ntohs(ia
->type
);
2948 const struct ofp_action_dl_addr
*oada
;
2952 xlate_output_action(ctx
, &ia
->output
);
2955 case OFPAT_SET_VLAN_VID
:
2956 ctx
->flow
.vlan_tci
&= ~htons(VLAN_VID_MASK
);
2957 ctx
->flow
.vlan_tci
|= ia
->vlan_vid
.vlan_vid
| htons(VLAN_CFI
);
2958 xlate_set_dl_tci(ctx
);
2961 case OFPAT_SET_VLAN_PCP
:
2962 ctx
->flow
.vlan_tci
&= ~htons(VLAN_PCP_MASK
);
2963 ctx
->flow
.vlan_tci
|= htons(
2964 (ia
->vlan_pcp
.vlan_pcp
<< VLAN_PCP_SHIFT
) | VLAN_CFI
);
2965 xlate_set_dl_tci(ctx
);
2968 case OFPAT_STRIP_VLAN
:
2969 ctx
->flow
.vlan_tci
= htons(0);
2970 xlate_set_dl_tci(ctx
);
2973 case OFPAT_SET_DL_SRC
:
2974 oada
= ((struct ofp_action_dl_addr
*) ia
);
2975 nl_msg_put_unspec(ctx
->odp_actions
, ODPAT_SET_DL_SRC
,
2976 oada
->dl_addr
, ETH_ADDR_LEN
);
2977 memcpy(ctx
->flow
.dl_src
, oada
->dl_addr
, ETH_ADDR_LEN
);
2980 case OFPAT_SET_DL_DST
:
2981 oada
= ((struct ofp_action_dl_addr
*) ia
);
2982 nl_msg_put_unspec(ctx
->odp_actions
, ODPAT_SET_DL_DST
,
2983 oada
->dl_addr
, ETH_ADDR_LEN
);
2984 memcpy(ctx
->flow
.dl_dst
, oada
->dl_addr
, ETH_ADDR_LEN
);
2987 case OFPAT_SET_NW_SRC
:
2988 nl_msg_put_be32(ctx
->odp_actions
, ODPAT_SET_NW_SRC
,
2989 ia
->nw_addr
.nw_addr
);
2990 ctx
->flow
.nw_src
= ia
->nw_addr
.nw_addr
;
2993 case OFPAT_SET_NW_DST
:
2994 nl_msg_put_be32(ctx
->odp_actions
, ODPAT_SET_NW_DST
,
2995 ia
->nw_addr
.nw_addr
);
2996 ctx
->flow
.nw_dst
= ia
->nw_addr
.nw_addr
;
2999 case OFPAT_SET_NW_TOS
:
3000 nl_msg_put_u8(ctx
->odp_actions
, ODPAT_SET_NW_TOS
,
3002 ctx
->flow
.nw_tos
= ia
->nw_tos
.nw_tos
;
3005 case OFPAT_SET_TP_SRC
:
3006 nl_msg_put_be16(ctx
->odp_actions
, ODPAT_SET_TP_SRC
,
3007 ia
->tp_port
.tp_port
);
3008 ctx
->flow
.tp_src
= ia
->tp_port
.tp_port
;
3011 case OFPAT_SET_TP_DST
:
3012 nl_msg_put_be16(ctx
->odp_actions
, ODPAT_SET_TP_DST
,
3013 ia
->tp_port
.tp_port
);
3014 ctx
->flow
.tp_dst
= ia
->tp_port
.tp_port
;
3018 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
3022 xlate_enqueue_action(ctx
, (const struct ofp_action_enqueue
*) ia
);
3026 VLOG_DBG_RL(&rl
, "unknown action type %d", (int) type
);
3033 action_xlate_ctx_init(struct action_xlate_ctx
*ctx
,
3034 struct ofproto
*ofproto
, const struct flow
*flow
,
3035 const struct ofpbuf
*packet
)
3037 ctx
->ofproto
= ofproto
;
3039 ctx
->packet
= packet
;
3040 ctx
->resubmit_hook
= NULL
;
3043 static struct ofpbuf
*
3044 xlate_actions(struct action_xlate_ctx
*ctx
,
3045 const union ofp_action
*in
, size_t n_in
)
3047 COVERAGE_INC(ofproto_ofp2odp
);
3049 ctx
->odp_actions
= ofpbuf_new(512);
3051 ctx
->may_set_up_flow
= true;
3052 ctx
->nf_output_iface
= NF_OUT_DROP
;
3054 ctx
->last_pop_priority
= -1;
3055 do_xlate_actions(in
, n_in
, ctx
);
3056 remove_pop_action(ctx
);
3058 /* Check with in-band control to see if we're allowed to set up this
3060 if (!in_band_rule_check(ctx
->ofproto
->in_band
, &ctx
->flow
,
3061 ctx
->odp_actions
->data
, ctx
->odp_actions
->size
)) {
3062 ctx
->may_set_up_flow
= false;
3065 return ctx
->odp_actions
;
3068 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
3069 * error message code (composed with ofp_mkerr()) for the caller to propagate
3070 * upward. Otherwise, returns 0.
3072 * The log message mentions 'msg_type'. */
3074 reject_slave_controller(struct ofconn
*ofconn
, const const char *msg_type
)
3076 if (ofconn
->type
== OFCONN_PRIMARY
&& ofconn
->role
== NX_ROLE_SLAVE
) {
3077 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3078 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
3081 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3088 handle_packet_out(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3090 struct ofproto
*p
= ofconn
->ofproto
;
3091 struct ofp_packet_out
*opo
;
3092 struct ofpbuf payload
, *buffer
;
3093 union ofp_action
*ofp_actions
;
3094 struct action_xlate_ctx ctx
;
3095 struct ofpbuf
*odp_actions
;
3096 struct ofpbuf request
;
3098 size_t n_ofp_actions
;
3102 COVERAGE_INC(ofproto_packet_out
);
3104 error
= reject_slave_controller(ofconn
, "OFPT_PACKET_OUT");
3109 /* Get ofp_packet_out. */
3110 ofpbuf_use_const(&request
, oh
, ntohs(oh
->length
));
3111 opo
= ofpbuf_pull(&request
, offsetof(struct ofp_packet_out
, actions
));
3114 error
= ofputil_pull_actions(&request
, ntohs(opo
->actions_len
),
3115 &ofp_actions
, &n_ofp_actions
);
3121 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
3122 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
3124 if (error
|| !buffer
) {
3133 /* Extract flow, check actions. */
3134 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)),
3136 error
= validate_actions(ofp_actions
, n_ofp_actions
, &flow
, p
->max_ports
);
3142 action_xlate_ctx_init(&ctx
, p
, &flow
, &payload
);
3143 odp_actions
= xlate_actions(&ctx
, ofp_actions
, n_ofp_actions
);
3144 dpif_execute(p
->dpif
, odp_actions
->data
, odp_actions
->size
, &payload
);
3145 ofpbuf_delete(odp_actions
);
3148 ofpbuf_delete(buffer
);
3153 update_port_config(struct ofproto
*p
, struct ofport
*port
,
3154 uint32_t config
, uint32_t mask
)
3156 mask
&= config
^ port
->opp
.config
;
3157 if (mask
& OFPPC_PORT_DOWN
) {
3158 if (config
& OFPPC_PORT_DOWN
) {
3159 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
3161 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
3164 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | \
3165 OFPPC_NO_FWD | OFPPC_NO_FLOOD)
3166 if (mask
& REVALIDATE_BITS
) {
3167 COVERAGE_INC(ofproto_costly_flags
);
3168 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
3169 p
->need_revalidate
= true;
3171 #undef REVALIDATE_BITS
3172 if (mask
& OFPPC_NO_PACKET_IN
) {
3173 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
3178 handle_port_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3180 struct ofproto
*p
= ofconn
->ofproto
;
3181 const struct ofp_port_mod
*opm
= (const struct ofp_port_mod
*) oh
;
3182 struct ofport
*port
;
3185 error
= reject_slave_controller(ofconn
, "OFPT_PORT_MOD");
3190 port
= get_port(p
, ofp_port_to_odp_port(ntohs(opm
->port_no
)));
3192 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
3193 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
3194 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
3196 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
3197 if (opm
->advertise
) {
3198 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
3204 static struct ofpbuf
*
3205 make_ofp_stats_reply(ovs_be32 xid
, ovs_be16 type
, size_t body_len
)
3207 struct ofp_stats_reply
*osr
;
3210 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
3211 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
3213 osr
->flags
= htons(0);
3217 static struct ofpbuf
*
3218 start_ofp_stats_reply(const struct ofp_header
*request
, size_t body_len
)
3220 const struct ofp_stats_request
*osr
3221 = (const struct ofp_stats_request
*) request
;
3222 return make_ofp_stats_reply(osr
->header
.xid
, osr
->type
, body_len
);
3226 append_ofp_stats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3227 struct ofpbuf
**msgp
)
3229 struct ofpbuf
*msg
= *msgp
;
3230 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
3231 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3232 struct ofp_stats_reply
*reply
= msg
->data
;
3233 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3234 *msgp
= make_ofp_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
3235 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3237 return ofpbuf_put_uninit(*msgp
, nbytes
);
3240 static struct ofpbuf
*
3241 make_nxstats_reply(ovs_be32 xid
, ovs_be32 subtype
, size_t body_len
)
3243 struct nicira_stats_msg
*nsm
;
3246 msg
= ofpbuf_new(MIN(sizeof *nsm
+ body_len
, UINT16_MAX
));
3247 nsm
= put_openflow_xid(sizeof *nsm
, OFPT_STATS_REPLY
, xid
, msg
);
3248 nsm
->type
= htons(OFPST_VENDOR
);
3249 nsm
->flags
= htons(0);
3250 nsm
->vendor
= htonl(NX_VENDOR_ID
);
3251 nsm
->subtype
= htonl(subtype
);
3255 static struct ofpbuf
*
3256 start_nxstats_reply(const struct nicira_stats_msg
*request
, size_t body_len
)
3258 return make_nxstats_reply(request
->header
.xid
, request
->subtype
, body_len
);
3262 append_nxstats_reply(size_t nbytes
, struct ofconn
*ofconn
,
3263 struct ofpbuf
**msgp
)
3265 struct ofpbuf
*msg
= *msgp
;
3266 assert(nbytes
<= UINT16_MAX
- sizeof(struct nicira_stats_msg
));
3267 if (nbytes
+ msg
->size
> UINT16_MAX
) {
3268 struct nicira_stats_msg
*reply
= msg
->data
;
3269 reply
->flags
= htons(OFPSF_REPLY_MORE
);
3270 *msgp
= make_nxstats_reply(reply
->header
.xid
, reply
->subtype
, nbytes
);
3271 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3273 ofpbuf_prealloc_tailroom(*msgp
, nbytes
);
3277 handle_desc_stats_request(struct ofconn
*ofconn
,
3278 const struct ofp_header
*request
)
3280 struct ofproto
*p
= ofconn
->ofproto
;
3281 struct ofp_desc_stats
*ods
;
3284 msg
= start_ofp_stats_reply(request
, sizeof *ods
);
3285 ods
= append_ofp_stats_reply(sizeof *ods
, ofconn
, &msg
);
3286 memset(ods
, 0, sizeof *ods
);
3287 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
3288 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
3289 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
3290 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
3291 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
3292 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3298 handle_table_stats_request(struct ofconn
*ofconn
,
3299 const struct ofp_header
*request
)
3301 struct ofproto
*p
= ofconn
->ofproto
;
3302 struct ofp_table_stats
*ots
;
3305 msg
= start_ofp_stats_reply(request
, sizeof *ots
* 2);
3307 /* Classifier table. */
3308 ots
= append_ofp_stats_reply(sizeof *ots
, ofconn
, &msg
);
3309 memset(ots
, 0, sizeof *ots
);
3310 strcpy(ots
->name
, "classifier");
3311 ots
->wildcards
= (ofconn
->flow_format
== NXFF_OPENFLOW10
3312 ? htonl(OFPFW_ALL
) : htonl(OVSFW_ALL
));
3313 ots
->max_entries
= htonl(1024 * 1024); /* An arbitrary big number. */
3314 ots
->active_count
= htonl(classifier_count(&p
->cls
));
3315 ots
->lookup_count
= htonll(0); /* XXX */
3316 ots
->matched_count
= htonll(0); /* XXX */
3318 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3323 append_port_stat(struct ofport
*port
, struct ofconn
*ofconn
,
3324 struct ofpbuf
**msgp
)
3326 struct netdev_stats stats
;
3327 struct ofp_port_stats
*ops
;
3329 /* Intentionally ignore return value, since errors will set
3330 * 'stats' to all-1s, which is correct for OpenFlow, and
3331 * netdev_get_stats() will log errors. */
3332 netdev_get_stats(port
->netdev
, &stats
);
3334 ops
= append_ofp_stats_reply(sizeof *ops
, ofconn
, msgp
);
3335 ops
->port_no
= htons(port
->opp
.port_no
);
3336 memset(ops
->pad
, 0, sizeof ops
->pad
);
3337 ops
->rx_packets
= htonll(stats
.rx_packets
);
3338 ops
->tx_packets
= htonll(stats
.tx_packets
);
3339 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
3340 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
3341 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
3342 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
3343 ops
->rx_errors
= htonll(stats
.rx_errors
);
3344 ops
->tx_errors
= htonll(stats
.tx_errors
);
3345 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
3346 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
3347 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
3348 ops
->collisions
= htonll(stats
.collisions
);
3352 handle_port_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3354 struct ofproto
*p
= ofconn
->ofproto
;
3355 const struct ofp_port_stats_request
*psr
= ofputil_stats_body(oh
);
3356 struct ofp_port_stats
*ops
;
3358 struct ofport
*port
;
3360 msg
= start_ofp_stats_reply(oh
, sizeof *ops
* 16);
3361 if (psr
->port_no
!= htons(OFPP_NONE
)) {
3362 port
= get_port(p
, ofp_port_to_odp_port(ntohs(psr
->port_no
)));
3364 append_port_stat(port
, ofconn
, &msg
);
3367 HMAP_FOR_EACH (port
, hmap_node
, &p
->ports
) {
3368 append_port_stat(port
, ofconn
, &msg
);
3372 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3376 /* Obtains statistic counters for 'rule' within 'p' and stores them into
3377 * '*packet_countp' and '*byte_countp'. The returned statistics include
3378 * statistics for all of 'rule''s facets. */
3380 query_stats(struct ofproto
*p
, struct rule
*rule
,
3381 uint64_t *packet_countp
, uint64_t *byte_countp
)
3383 uint64_t packet_count
, byte_count
;
3384 struct facet
*facet
;
3385 struct odp_flow
*odp_flows
;
3388 /* Start from historical data for 'rule' itself that are no longer tracked
3389 * by the datapath. This counts, for example, facets that have expired. */
3390 packet_count
= rule
->packet_count
;
3391 byte_count
= rule
->byte_count
;
3393 /* Prepare to ask the datapath for statistics on all of the rule's facets.
3395 * Also, add any statistics that are not tracked by the datapath for each
3396 * facet. This includes, for example, statistics for packets that were
3397 * executed "by hand" by ofproto via dpif_execute() but must be accounted
3399 odp_flows
= xzalloc(list_size(&rule
->facets
) * sizeof *odp_flows
);
3401 LIST_FOR_EACH (facet
, list_node
, &rule
->facets
) {
3402 struct odp_flow
*odp_flow
= &odp_flows
[n_odp_flows
++];
3403 odp_flow_key_from_flow(&odp_flow
->key
, &facet
->flow
);
3404 packet_count
+= facet
->packet_count
;
3405 byte_count
+= facet
->byte_count
;
3408 /* Fetch up-to-date statistics from the datapath and add them in. */
3409 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
3412 for (i
= 0; i
< n_odp_flows
; i
++) {
3413 struct odp_flow
*odp_flow
= &odp_flows
[i
];
3414 packet_count
+= odp_flow
->stats
.n_packets
;
3415 byte_count
+= odp_flow
->stats
.n_bytes
;
3420 /* Return the stats to the caller. */
3421 *packet_countp
= packet_count
;
3422 *byte_countp
= byte_count
;
3426 calc_flow_duration(long long int start
, ovs_be32
*sec
, ovs_be32
*nsec
)
3428 long long int msecs
= time_msec() - start
;
3429 *sec
= htonl(msecs
/ 1000);
3430 *nsec
= htonl((msecs
% 1000) * (1000 * 1000));
3434 put_ofp_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3435 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3437 struct ofp_flow_stats
*ofs
;
3438 uint64_t packet_count
, byte_count
;
3439 size_t act_len
, len
;
3441 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3445 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3446 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
3448 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3450 ofs
= append_ofp_stats_reply(len
, ofconn
, replyp
);
3451 ofs
->length
= htons(len
);
3454 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofs
->match
);
3455 calc_flow_duration(rule
->created
, &ofs
->duration_sec
, &ofs
->duration_nsec
);
3456 ofs
->cookie
= rule
->flow_cookie
;
3457 ofs
->priority
= htons(rule
->cr
.priority
);
3458 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
3459 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
3460 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
3461 ofs
->packet_count
= htonll(packet_count
);
3462 ofs
->byte_count
= htonll(byte_count
);
3463 if (rule
->n_actions
> 0) {
3464 memcpy(ofs
->actions
, rule
->actions
, act_len
);
3469 is_valid_table(uint8_t table_id
)
3471 return table_id
== 0 || table_id
== 0xff;
3475 handle_flow_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3477 const struct ofp_flow_stats_request
*fsr
= ofputil_stats_body(oh
);
3478 struct ofpbuf
*reply
;
3480 COVERAGE_INC(ofproto_flows_req
);
3481 reply
= start_ofp_stats_reply(oh
, 1024);
3482 if (is_valid_table(fsr
->table_id
)) {
3483 struct cls_cursor cursor
;
3484 struct cls_rule target
;
3487 ofputil_cls_rule_from_match(&fsr
->match
, 0, NXFF_OPENFLOW10
, 0,
3489 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3490 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3491 put_ofp_flow_stats(ofconn
, rule
, fsr
->out_port
, &reply
);
3494 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3500 put_nx_flow_stats(struct ofconn
*ofconn
, struct rule
*rule
,
3501 ovs_be16 out_port
, struct ofpbuf
**replyp
)
3503 struct nx_flow_stats
*nfs
;
3504 uint64_t packet_count
, byte_count
;
3505 size_t act_len
, start_len
;
3506 struct ofpbuf
*reply
;
3508 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, out_port
)) {
3512 query_stats(ofconn
->ofproto
, rule
, &packet_count
, &byte_count
);
3514 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3516 start_len
= (*replyp
)->size
;
3517 append_nxstats_reply(sizeof *nfs
+ NXM_MAX_LEN
+ act_len
, ofconn
, replyp
);
3520 nfs
= ofpbuf_put_uninit(reply
, sizeof *nfs
);
3523 calc_flow_duration(rule
->created
, &nfs
->duration_sec
, &nfs
->duration_nsec
);
3524 nfs
->cookie
= rule
->flow_cookie
;
3525 nfs
->priority
= htons(rule
->cr
.priority
);
3526 nfs
->idle_timeout
= htons(rule
->idle_timeout
);
3527 nfs
->hard_timeout
= htons(rule
->hard_timeout
);
3528 nfs
->match_len
= htons(nx_put_match(reply
, &rule
->cr
));
3529 memset(nfs
->pad2
, 0, sizeof nfs
->pad2
);
3530 nfs
->packet_count
= htonll(packet_count
);
3531 nfs
->byte_count
= htonll(byte_count
);
3532 if (rule
->n_actions
> 0) {
3533 ofpbuf_put(reply
, rule
->actions
, act_len
);
3535 nfs
->length
= htons(reply
->size
- start_len
);
3539 handle_nxst_flow(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3541 struct nx_flow_stats_request
*nfsr
;
3542 struct cls_rule target
;
3543 struct ofpbuf
*reply
;
3547 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
3549 /* Dissect the message. */
3550 nfsr
= ofpbuf_pull(&b
, sizeof *nfsr
);
3551 error
= nx_pull_match(&b
, ntohs(nfsr
->match_len
), 0, &target
);
3556 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3559 COVERAGE_INC(ofproto_flows_req
);
3560 reply
= start_nxstats_reply(&nfsr
->nsm
, 1024);
3561 if (is_valid_table(nfsr
->table_id
)) {
3562 struct cls_cursor cursor
;
3565 cls_cursor_init(&cursor
, &ofconn
->ofproto
->cls
, &target
);
3566 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3567 put_nx_flow_stats(ofconn
, rule
, nfsr
->out_port
, &reply
);
3570 queue_tx(reply
, ofconn
, ofconn
->reply_counter
);
3576 flow_stats_ds(struct ofproto
*ofproto
, struct rule
*rule
, struct ds
*results
)
3578 uint64_t packet_count
, byte_count
;
3579 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3581 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3583 ds_put_format(results
, "duration=%llds, ",
3584 (time_msec() - rule
->created
) / 1000);
3585 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3586 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3587 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3588 cls_rule_format(&rule
->cr
, results
);
3590 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3592 ds_put_cstr(results
, "drop");
3594 ds_put_cstr(results
, "\n");
3597 /* Adds a pretty-printed description of all flows to 'results', including
3598 * those marked hidden by secchan (e.g., by in-band control). */
3600 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3602 struct cls_cursor cursor
;
3605 cls_cursor_init(&cursor
, &p
->cls
, NULL
);
3606 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3607 flow_stats_ds(p
, rule
, results
);
3612 query_aggregate_stats(struct ofproto
*ofproto
, struct cls_rule
*target
,
3613 ovs_be16 out_port
, uint8_t table_id
,
3614 struct ofp_aggregate_stats_reply
*oasr
)
3616 uint64_t total_packets
= 0;
3617 uint64_t total_bytes
= 0;
3620 COVERAGE_INC(ofproto_agg_request
);
3622 if (is_valid_table(table_id
)) {
3623 struct cls_cursor cursor
;
3626 cls_cursor_init(&cursor
, &ofproto
->cls
, target
);
3627 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3628 if (!rule_is_hidden(rule
) && rule_has_out_port(rule
, out_port
)) {
3629 uint64_t packet_count
;
3630 uint64_t byte_count
;
3632 query_stats(ofproto
, rule
, &packet_count
, &byte_count
);
3634 total_packets
+= packet_count
;
3635 total_bytes
+= byte_count
;
3641 oasr
->flow_count
= htonl(n_flows
);
3642 oasr
->packet_count
= htonll(total_packets
);
3643 oasr
->byte_count
= htonll(total_bytes
);
3644 memset(oasr
->pad
, 0, sizeof oasr
->pad
);
3648 handle_aggregate_stats_request(struct ofconn
*ofconn
,
3649 const struct ofp_header
*oh
)
3651 const struct ofp_aggregate_stats_request
*request
= ofputil_stats_body(oh
);
3652 struct ofp_aggregate_stats_reply
*reply
;
3653 struct cls_rule target
;
3656 ofputil_cls_rule_from_match(&request
->match
, 0, NXFF_OPENFLOW10
, 0,
3659 msg
= start_ofp_stats_reply(oh
, sizeof *reply
);
3660 reply
= append_ofp_stats_reply(sizeof *reply
, ofconn
, &msg
);
3661 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3662 request
->table_id
, reply
);
3663 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3668 handle_nxst_aggregate(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3670 struct nx_aggregate_stats_request
*request
;
3671 struct ofp_aggregate_stats_reply
*reply
;
3672 struct cls_rule target
;
3677 ofpbuf_use_const(&b
, oh
, ntohs(oh
->length
));
3679 /* Dissect the message. */
3680 request
= ofpbuf_pull(&b
, sizeof *request
);
3681 error
= nx_pull_match(&b
, ntohs(request
->match_len
), 0, &target
);
3686 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3690 COVERAGE_INC(ofproto_flows_req
);
3691 buf
= start_nxstats_reply(&request
->nsm
, sizeof *reply
);
3692 reply
= ofpbuf_put_uninit(buf
, sizeof *reply
);
3693 query_aggregate_stats(ofconn
->ofproto
, &target
, request
->out_port
,
3694 request
->table_id
, reply
);
3695 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3700 struct queue_stats_cbdata
{
3701 struct ofconn
*ofconn
;
3702 struct ofport
*ofport
;
3707 put_queue_stats(struct queue_stats_cbdata
*cbdata
, uint32_t queue_id
,
3708 const struct netdev_queue_stats
*stats
)
3710 struct ofp_queue_stats
*reply
;
3712 reply
= append_ofp_stats_reply(sizeof *reply
, cbdata
->ofconn
, &cbdata
->msg
);
3713 reply
->port_no
= htons(cbdata
->ofport
->opp
.port_no
);
3714 memset(reply
->pad
, 0, sizeof reply
->pad
);
3715 reply
->queue_id
= htonl(queue_id
);
3716 reply
->tx_bytes
= htonll(stats
->tx_bytes
);
3717 reply
->tx_packets
= htonll(stats
->tx_packets
);
3718 reply
->tx_errors
= htonll(stats
->tx_errors
);
3722 handle_queue_stats_dump_cb(uint32_t queue_id
,
3723 struct netdev_queue_stats
*stats
,
3726 struct queue_stats_cbdata
*cbdata
= cbdata_
;
3728 put_queue_stats(cbdata
, queue_id
, stats
);
3732 handle_queue_stats_for_port(struct ofport
*port
, uint32_t queue_id
,
3733 struct queue_stats_cbdata
*cbdata
)
3735 cbdata
->ofport
= port
;
3736 if (queue_id
== OFPQ_ALL
) {
3737 netdev_dump_queue_stats(port
->netdev
,
3738 handle_queue_stats_dump_cb
, cbdata
);
3740 struct netdev_queue_stats stats
;
3742 if (!netdev_get_queue_stats(port
->netdev
, queue_id
, &stats
)) {
3743 put_queue_stats(cbdata
, queue_id
, &stats
);
3749 handle_queue_stats_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
3751 struct ofproto
*ofproto
= ofconn
->ofproto
;
3752 const struct ofp_queue_stats_request
*qsr
;
3753 struct queue_stats_cbdata cbdata
;
3754 struct ofport
*port
;
3755 unsigned int port_no
;
3758 qsr
= ofputil_stats_body(oh
);
3760 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3763 COVERAGE_INC(ofproto_queue_req
);
3765 cbdata
.ofconn
= ofconn
;
3766 cbdata
.msg
= start_ofp_stats_reply(oh
, 128);
3768 port_no
= ntohs(qsr
->port_no
);
3769 queue_id
= ntohl(qsr
->queue_id
);
3770 if (port_no
== OFPP_ALL
) {
3771 HMAP_FOR_EACH (port
, hmap_node
, &ofproto
->ports
) {
3772 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3774 } else if (port_no
< ofproto
->max_ports
) {
3775 port
= get_port(ofproto
, ofp_port_to_odp_port(port_no
));
3777 handle_queue_stats_for_port(port
, queue_id
, &cbdata
);
3780 ofpbuf_delete(cbdata
.msg
);
3781 return ofp_mkerr(OFPET_QUEUE_OP_FAILED
, OFPQOFC_BAD_PORT
);
3783 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3788 static long long int
3789 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3791 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3795 facet_update_time(struct ofproto
*ofproto
, struct facet
*facet
,
3796 const struct odp_flow_stats
*stats
)
3798 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3799 if (used
> facet
->used
) {
3801 if (used
> facet
->rule
->used
) {
3802 facet
->rule
->used
= used
;
3804 netflow_flow_update_time(ofproto
->netflow
, &facet
->nf_flow
, used
);
3808 /* Folds the statistics from 'stats' into the counters in 'facet'.
3810 * Because of the meaning of a facet's counters, it only makes sense to do this
3811 * if 'stats' are not tracked in the datapath, that is, if 'stats' represents a
3812 * packet that was sent by hand or if it represents statistics that have been
3813 * cleared out of the datapath. */
3815 facet_update_stats(struct ofproto
*ofproto
, struct facet
*facet
,
3816 const struct odp_flow_stats
*stats
)
3818 if (stats
->n_packets
) {
3819 facet_update_time(ofproto
, facet
, stats
);
3820 facet
->packet_count
+= stats
->n_packets
;
3821 facet
->byte_count
+= stats
->n_bytes
;
3822 netflow_flow_update_flags(&facet
->nf_flow
, stats
->tcp_flags
);
3826 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3827 * in which no matching flow already exists in the flow table.
3829 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3830 * ofp_actions, to ofconn->ofproto's flow table. Returns 0 on success or an
3831 * OpenFlow error code as encoded by ofp_mkerr() on failure.
3833 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3836 add_flow(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3838 struct ofproto
*p
= ofconn
->ofproto
;
3839 struct ofpbuf
*packet
;
3844 if (fm
->flags
& OFPFF_CHECK_OVERLAP
3845 && classifier_rule_overlaps(&p
->cls
, &fm
->cr
)) {
3846 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3850 if (fm
->buffer_id
!= UINT32_MAX
) {
3851 error
= pktbuf_retrieve(ofconn
->pktbuf
, fm
->buffer_id
,
3855 in_port
= UINT16_MAX
;
3858 rule
= rule_create(&fm
->cr
, fm
->actions
, fm
->n_actions
,
3859 fm
->idle_timeout
, fm
->hard_timeout
, fm
->cookie
,
3860 fm
->flags
& OFPFF_SEND_FLOW_REM
);
3861 rule_insert(p
, rule
);
3863 rule_execute(p
, rule
, in_port
, packet
);
3868 static struct rule
*
3869 find_flow_strict(struct ofproto
*p
, const struct flow_mod
*fm
)
3871 return rule_from_cls_rule(classifier_find_rule_exactly(&p
->cls
, &fm
->cr
));
3875 send_buffered_packet(struct ofconn
*ofconn
,
3876 struct rule
*rule
, uint32_t buffer_id
)
3878 struct ofpbuf
*packet
;
3882 if (buffer_id
== UINT32_MAX
) {
3886 error
= pktbuf_retrieve(ofconn
->pktbuf
, buffer_id
, &packet
, &in_port
);
3891 rule_execute(ofconn
->ofproto
, rule
, in_port
, packet
);
3896 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3898 struct modify_flows_cbdata
{
3899 struct ofproto
*ofproto
;
3900 const struct flow_mod
*fm
;
3904 static int modify_flow(struct ofproto
*, const struct flow_mod
*,
3907 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3908 * encoded by ofp_mkerr() on failure.
3910 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3913 modify_flows_loose(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3915 struct ofproto
*p
= ofconn
->ofproto
;
3916 struct rule
*match
= NULL
;
3917 struct cls_cursor cursor
;
3920 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
3921 CLS_CURSOR_FOR_EACH (rule
, cr
, &cursor
) {
3922 if (!rule_is_hidden(rule
)) {
3924 modify_flow(p
, fm
, rule
);
3929 /* This credits the packet to whichever flow happened to match last.
3930 * That's weird. Maybe we should do a lookup for the flow that
3931 * actually matches the packet? Who knows. */
3932 send_buffered_packet(ofconn
, match
, fm
->buffer_id
);
3935 return add_flow(ofconn
, fm
);
3939 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3940 * code as encoded by ofp_mkerr() on failure.
3942 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3945 modify_flow_strict(struct ofconn
*ofconn
, struct flow_mod
*fm
)
3947 struct ofproto
*p
= ofconn
->ofproto
;
3948 struct rule
*rule
= find_flow_strict(p
, fm
);
3949 if (rule
&& !rule_is_hidden(rule
)) {
3950 modify_flow(p
, fm
, rule
);
3951 return send_buffered_packet(ofconn
, rule
, fm
->buffer_id
);
3953 return add_flow(ofconn
, fm
);
3957 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3958 * been identified as a flow in 'p''s flow table to be modified, by changing
3959 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3960 * ofp_action[] structures). */
3962 modify_flow(struct ofproto
*p
, const struct flow_mod
*fm
, struct rule
*rule
)
3964 size_t actions_len
= fm
->n_actions
* sizeof *rule
->actions
;
3966 rule
->flow_cookie
= fm
->cookie
;
3968 /* If the actions are the same, do nothing. */
3969 if (fm
->n_actions
== rule
->n_actions
3971 || !memcmp(fm
->actions
, rule
->actions
, actions_len
))) {
3975 /* Replace actions. */
3976 free(rule
->actions
);
3977 rule
->actions
= fm
->n_actions
? xmemdup(fm
->actions
, actions_len
) : NULL
;
3978 rule
->n_actions
= fm
->n_actions
;
3980 p
->need_revalidate
= true;
3985 /* OFPFC_DELETE implementation. */
3987 static void delete_flow(struct ofproto
*, struct rule
*, ovs_be16 out_port
);
3989 /* Implements OFPFC_DELETE. */
3991 delete_flows_loose(struct ofproto
*p
, const struct flow_mod
*fm
)
3993 struct rule
*rule
, *next_rule
;
3994 struct cls_cursor cursor
;
3996 cls_cursor_init(&cursor
, &p
->cls
, &fm
->cr
);
3997 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
3998 delete_flow(p
, rule
, htons(fm
->out_port
));
4002 /* Implements OFPFC_DELETE_STRICT. */
4004 delete_flow_strict(struct ofproto
*p
, struct flow_mod
*fm
)
4006 struct rule
*rule
= find_flow_strict(p
, fm
);
4008 delete_flow(p
, rule
, htons(fm
->out_port
));
4012 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
4013 * been identified as a flow to delete from 'p''s flow table, by deleting the
4014 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
4017 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
4018 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
4019 * specified 'out_port'. */
4021 delete_flow(struct ofproto
*p
, struct rule
*rule
, ovs_be16 out_port
)
4023 if (rule_is_hidden(rule
)) {
4027 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
4031 rule_send_removed(p
, rule
, OFPRR_DELETE
);
4032 rule_remove(p
, rule
);
4036 handle_flow_mod(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4038 struct ofproto
*p
= ofconn
->ofproto
;
4042 error
= reject_slave_controller(ofconn
, "flow_mod");
4047 error
= ofputil_decode_flow_mod(&fm
, oh
, ofconn
->flow_format
);
4052 /* We do not support the emergency flow cache. It will hopefully get
4053 * dropped from OpenFlow in the near future. */
4054 if (fm
.flags
& OFPFF_EMERG
) {
4055 /* There isn't a good fit for an error code, so just state that the
4056 * flow table is full. */
4057 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
4060 error
= validate_actions(fm
.actions
, fm
.n_actions
,
4061 &fm
.cr
.flow
, p
->max_ports
);
4066 switch (fm
.command
) {
4068 return add_flow(ofconn
, &fm
);
4071 return modify_flows_loose(ofconn
, &fm
);
4073 case OFPFC_MODIFY_STRICT
:
4074 return modify_flow_strict(ofconn
, &fm
);
4077 delete_flows_loose(p
, &fm
);
4080 case OFPFC_DELETE_STRICT
:
4081 delete_flow_strict(p
, &fm
);
4085 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
4090 handle_tun_id_from_cookie(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4092 const struct nxt_tun_id_cookie
*msg
4093 = (const struct nxt_tun_id_cookie
*) oh
;
4095 ofconn
->flow_format
= msg
->set
? NXFF_TUN_ID_FROM_COOKIE
: NXFF_OPENFLOW10
;
4100 handle_role_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4102 struct nx_role_request
*nrr
= (struct nx_role_request
*) oh
;
4103 struct nx_role_request
*reply
;
4107 if (ofconn
->type
!= OFCONN_PRIMARY
) {
4108 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
4110 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4113 role
= ntohl(nrr
->role
);
4114 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
4115 && role
!= NX_ROLE_SLAVE
) {
4116 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
4118 /* There's no good error code for this. */
4119 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
4122 if (role
== NX_ROLE_MASTER
) {
4123 struct ofconn
*other
;
4125 HMAP_FOR_EACH (other
, hmap_node
, &ofconn
->ofproto
->controllers
) {
4126 if (other
->role
== NX_ROLE_MASTER
) {
4127 other
->role
= NX_ROLE_SLAVE
;
4131 ofconn
->role
= role
;
4133 reply
= make_nxmsg_xid(sizeof *reply
, NXT_ROLE_REPLY
, oh
->xid
, &buf
);
4134 reply
->role
= htonl(role
);
4135 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4141 handle_nxt_set_flow_format(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4143 const struct nxt_set_flow_format
*msg
4144 = (const struct nxt_set_flow_format
*) oh
;
4147 format
= ntohl(msg
->format
);
4148 if (format
== NXFF_OPENFLOW10
4149 || format
== NXFF_TUN_ID_FROM_COOKIE
4150 || format
== NXFF_NXM
) {
4151 ofconn
->flow_format
= format
;
4154 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
4159 handle_barrier_request(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
4161 struct ofp_header
*ob
;
4164 /* Currently, everything executes synchronously, so we can just
4165 * immediately send the barrier reply. */
4166 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
4167 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
4172 handle_openflow__(struct ofconn
*ofconn
, const struct ofpbuf
*msg
)
4174 const struct ofp_header
*oh
= msg
->data
;
4175 const struct ofputil_msg_type
*type
;
4178 error
= ofputil_decode_msg_type(oh
, &type
);
4183 switch (ofputil_msg_type_code(type
)) {
4184 /* OpenFlow requests. */
4185 case OFPUTIL_OFPT_ECHO_REQUEST
:
4186 return handle_echo_request(ofconn
, oh
);
4188 case OFPUTIL_OFPT_FEATURES_REQUEST
:
4189 return handle_features_request(ofconn
, oh
);
4191 case OFPUTIL_OFPT_GET_CONFIG_REQUEST
:
4192 return handle_get_config_request(ofconn
, oh
);
4194 case OFPUTIL_OFPT_SET_CONFIG
:
4195 return handle_set_config(ofconn
, msg
->data
);
4197 case OFPUTIL_OFPT_PACKET_OUT
:
4198 return handle_packet_out(ofconn
, oh
);
4200 case OFPUTIL_OFPT_PORT_MOD
:
4201 return handle_port_mod(ofconn
, oh
);
4203 case OFPUTIL_OFPT_FLOW_MOD
:
4204 return handle_flow_mod(ofconn
, oh
);
4206 case OFPUTIL_OFPT_BARRIER_REQUEST
:
4207 return handle_barrier_request(ofconn
, oh
);
4209 /* OpenFlow replies. */
4210 case OFPUTIL_OFPT_ECHO_REPLY
:
4213 /* Nicira extension requests. */
4214 case OFPUTIL_NXT_STATUS_REQUEST
:
4215 return switch_status_handle_request(
4216 ofconn
->ofproto
->switch_status
, ofconn
->rconn
, oh
);
4218 case OFPUTIL_NXT_TUN_ID_FROM_COOKIE
:
4219 return handle_tun_id_from_cookie(ofconn
, oh
);
4221 case OFPUTIL_NXT_ROLE_REQUEST
:
4222 return handle_role_request(ofconn
, oh
);
4224 case OFPUTIL_NXT_SET_FLOW_FORMAT
:
4225 return handle_nxt_set_flow_format(ofconn
, oh
);
4227 case OFPUTIL_NXT_FLOW_MOD
:
4228 return handle_flow_mod(ofconn
, oh
);
4230 /* OpenFlow statistics requests. */
4231 case OFPUTIL_OFPST_DESC_REQUEST
:
4232 return handle_desc_stats_request(ofconn
, oh
);
4234 case OFPUTIL_OFPST_FLOW_REQUEST
:
4235 return handle_flow_stats_request(ofconn
, oh
);
4237 case OFPUTIL_OFPST_AGGREGATE_REQUEST
:
4238 return handle_aggregate_stats_request(ofconn
, oh
);
4240 case OFPUTIL_OFPST_TABLE_REQUEST
:
4241 return handle_table_stats_request(ofconn
, oh
);
4243 case OFPUTIL_OFPST_PORT_REQUEST
:
4244 return handle_port_stats_request(ofconn
, oh
);
4246 case OFPUTIL_OFPST_QUEUE_REQUEST
:
4247 return handle_queue_stats_request(ofconn
, oh
);
4249 /* Nicira extension statistics requests. */
4250 case OFPUTIL_NXST_FLOW_REQUEST
:
4251 return handle_nxst_flow(ofconn
, oh
);
4253 case OFPUTIL_NXST_AGGREGATE_REQUEST
:
4254 return handle_nxst_aggregate(ofconn
, oh
);
4256 case OFPUTIL_INVALID
:
4257 case OFPUTIL_OFPT_HELLO
:
4258 case OFPUTIL_OFPT_ERROR
:
4259 case OFPUTIL_OFPT_FEATURES_REPLY
:
4260 case OFPUTIL_OFPT_GET_CONFIG_REPLY
:
4261 case OFPUTIL_OFPT_PACKET_IN
:
4262 case OFPUTIL_OFPT_FLOW_REMOVED
:
4263 case OFPUTIL_OFPT_PORT_STATUS
:
4264 case OFPUTIL_OFPT_BARRIER_REPLY
:
4265 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST
:
4266 case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY
:
4267 case OFPUTIL_OFPST_DESC_REPLY
:
4268 case OFPUTIL_OFPST_FLOW_REPLY
:
4269 case OFPUTIL_OFPST_QUEUE_REPLY
:
4270 case OFPUTIL_OFPST_PORT_REPLY
:
4271 case OFPUTIL_OFPST_TABLE_REPLY
:
4272 case OFPUTIL_OFPST_AGGREGATE_REPLY
:
4273 case OFPUTIL_NXT_STATUS_REPLY
:
4274 case OFPUTIL_NXT_ROLE_REPLY
:
4275 case OFPUTIL_NXT_FLOW_REMOVED
:
4276 case OFPUTIL_NXST_FLOW_REPLY
:
4277 case OFPUTIL_NXST_AGGREGATE_REPLY
:
4279 if (VLOG_IS_WARN_ENABLED()) {
4280 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
4281 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
4284 if (oh
->type
== OFPT_STATS_REQUEST
|| oh
->type
== OFPT_STATS_REPLY
) {
4285 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
4287 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
4293 handle_openflow(struct ofconn
*ofconn
, struct ofpbuf
*ofp_msg
)
4295 int error
= handle_openflow__(ofconn
, ofp_msg
);
4297 send_error_oh(ofconn
, ofp_msg
->data
, error
);
4299 COVERAGE_INC(ofproto_recv_openflow
);
4303 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4305 struct odp_msg
*msg
= packet
->data
;
4306 struct ofpbuf payload
;
4307 struct facet
*facet
;
4310 ofpbuf_use_const(&payload
, msg
+ 1, msg
->length
- sizeof *msg
);
4311 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
4313 packet
->l2
= payload
.l2
;
4314 packet
->l3
= payload
.l3
;
4315 packet
->l4
= payload
.l4
;
4316 packet
->l7
= payload
.l7
;
4318 /* Check with in-band control to see if this packet should be sent
4319 * to the local port regardless of the flow table. */
4320 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
4321 struct ofpbuf odp_actions
;
4323 ofpbuf_init(&odp_actions
, 32);
4324 nl_msg_put_u32(&odp_actions
, ODPAT_OUTPUT
, ODPP_LOCAL
);
4325 dpif_execute(p
->dpif
, odp_actions
.data
, odp_actions
.size
, &payload
);
4326 ofpbuf_uninit(&odp_actions
);
4329 facet
= facet_lookup_valid(p
, &flow
);
4331 struct rule
*rule
= rule_lookup(p
, &flow
);
4333 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
4334 struct ofport
*port
= get_port(p
, msg
->port
);
4336 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
4337 COVERAGE_INC(ofproto_no_packet_in
);
4338 /* XXX install 'drop' flow entry */
4339 ofpbuf_delete(packet
);
4343 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
,
4347 COVERAGE_INC(ofproto_packet_in
);
4348 send_packet_in(p
, packet
);
4352 facet
= facet_create(p
, rule
, &flow
, packet
);
4353 } else if (!facet
->may_install
) {
4354 /* The facet is not installable, that is, we need to process every
4355 * packet, so process the current packet's actions into 'facet'. */
4356 facet_make_actions(p
, facet
, packet
);
4359 if (facet
->rule
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
4361 * Extra-special case for fail-open mode.
4363 * We are in fail-open mode and the packet matched the fail-open rule,
4364 * but we are connected to a controller too. We should send the packet
4365 * up to the controller in the hope that it will try to set up a flow
4366 * and thereby allow us to exit fail-open.
4368 * See the top-level comment in fail-open.c for more information.
4370 send_packet_in(p
, ofpbuf_clone_with_headroom(packet
,
4371 DPIF_RECV_MSG_PADDING
));
4374 ofpbuf_pull(packet
, sizeof *msg
);
4375 facet_execute(p
, facet
, packet
);
4376 facet_install(p
, facet
, false);
4380 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
4382 struct odp_msg
*msg
= packet
->data
;
4384 switch (msg
->type
) {
4385 case _ODPL_ACTION_NR
:
4386 COVERAGE_INC(ofproto_ctlr_action
);
4387 send_packet_in(p
, packet
);
4390 case _ODPL_SFLOW_NR
:
4392 ofproto_sflow_received(p
->sflow
, msg
);
4394 ofpbuf_delete(packet
);
4398 handle_odp_miss_msg(p
, packet
);
4402 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
4408 /* Flow expiration. */
4410 static int ofproto_dp_max_idle(const struct ofproto
*);
4411 static void ofproto_update_used(struct ofproto
*);
4412 static void rule_expire(struct ofproto
*, struct rule
*);
4413 static void ofproto_expire_facets(struct ofproto
*, int dp_max_idle
);
4415 /* This function is called periodically by ofproto_run(). Its job is to
4416 * collect updates for the flows that have been installed into the datapath,
4417 * most importantly when they last were used, and then use that information to
4418 * expire flows that have not been used recently.
4420 * Returns the number of milliseconds after which it should be called again. */
4422 ofproto_expire(struct ofproto
*ofproto
)
4424 struct rule
*rule
, *next_rule
;
4425 struct cls_cursor cursor
;
4428 /* Update 'used' for each flow in the datapath. */
4429 ofproto_update_used(ofproto
);
4431 /* Expire facets that have been idle too long. */
4432 dp_max_idle
= ofproto_dp_max_idle(ofproto
);
4433 ofproto_expire_facets(ofproto
, dp_max_idle
);
4435 /* Expire OpenFlow flows whose idle_timeout or hard_timeout has passed. */
4436 cls_cursor_init(&cursor
, &ofproto
->cls
, NULL
);
4437 CLS_CURSOR_FOR_EACH_SAFE (rule
, next_rule
, cr
, &cursor
) {
4438 rule_expire(ofproto
, rule
);
4441 /* Let the hook know that we're at a stable point: all outstanding data
4442 * in existing flows has been accounted to the account_cb. Thus, the
4443 * hook can now reasonably do operations that depend on having accurate
4444 * flow volume accounting (currently, that's just bond rebalancing). */
4445 if (ofproto
->ofhooks
->account_checkpoint_cb
) {
4446 ofproto
->ofhooks
->account_checkpoint_cb(ofproto
->aux
);
4449 return MIN(dp_max_idle
, 1000);
4452 /* Update 'used' member of installed facets. */
4454 ofproto_update_used(struct ofproto
*p
)
4456 struct odp_flow
*flows
;
4461 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4466 for (i
= 0; i
< n_flows
; i
++) {
4467 struct odp_flow
*f
= &flows
[i
];
4468 struct facet
*facet
;
4471 odp_flow_key_to_flow(&f
->key
, &flow
);
4472 facet
= facet_find(p
, &flow
);
4474 if (facet
&& facet
->installed
) {
4475 facet_update_time(p
, facet
, &f
->stats
);
4476 facet_account(p
, facet
, f
->stats
.n_bytes
);
4478 /* There's a flow in the datapath that we know nothing about.
4480 COVERAGE_INC(ofproto_unexpected_rule
);
4481 dpif_flow_del(p
->dpif
, f
);
4488 /* Calculates and returns the number of milliseconds of idle time after which
4489 * facets should expire from the datapath and we should fold their statistics
4490 * into their parent rules in userspace. */
4492 ofproto_dp_max_idle(const struct ofproto
*ofproto
)
4495 * Idle time histogram.
4497 * Most of the time a switch has a relatively small number of facets. When
4498 * this is the case we might as well keep statistics for all of them in
4499 * userspace and to cache them in the kernel datapath for performance as
4502 * As the number of facets increases, the memory required to maintain
4503 * statistics about them in userspace and in the kernel becomes
4504 * significant. However, with a large number of facets it is likely that
4505 * only a few of them are "heavy hitters" that consume a large amount of
4506 * bandwidth. At this point, only heavy hitters are worth caching in the
4507 * kernel and maintaining in userspaces; other facets we can discard.
4509 * The technique used to compute the idle time is to build a histogram with
4510 * N_BUCKETS buckets whose width is BUCKET_WIDTH msecs each. Each facet
4511 * that is installed in the kernel gets dropped in the appropriate bucket.
4512 * After the histogram has been built, we compute the cutoff so that only
4513 * the most-recently-used 1% of facets (but at least 1000 flows) are kept
4514 * cached. At least the most-recently-used bucket of facets is kept, so
4515 * actually an arbitrary number of facets can be kept in any given
4516 * expiration run (though the next run will delete most of those unless
4517 * they receive additional data).
4519 * This requires a second pass through the facets, in addition to the pass
4520 * made by ofproto_update_used(), because the former function never looks
4521 * at uninstallable facets.
4523 enum { BUCKET_WIDTH
= ROUND_UP(100, TIME_UPDATE_INTERVAL
) };
4524 enum { N_BUCKETS
= 5000 / BUCKET_WIDTH
};
4525 int buckets
[N_BUCKETS
] = { 0 };
4526 struct facet
*facet
;
4531 total
= hmap_count(&ofproto
->facets
);
4532 if (total
<= 1000) {
4533 return N_BUCKETS
* BUCKET_WIDTH
;
4536 /* Build histogram. */
4538 HMAP_FOR_EACH (facet
, hmap_node
, &ofproto
->facets
) {
4539 long long int idle
= now
- facet
->used
;
4540 int bucket
= (idle
<= 0 ? 0
4541 : idle
>= BUCKET_WIDTH
* N_BUCKETS
? N_BUCKETS
- 1
4542 : (unsigned int) idle
/ BUCKET_WIDTH
);
4546 /* Find the first bucket whose flows should be expired. */
4547 for (bucket
= 0; bucket
< N_BUCKETS
; bucket
++) {
4548 if (buckets
[bucket
]) {
4551 subtotal
+= buckets
[bucket
++];
4552 } while (bucket
< N_BUCKETS
&& subtotal
< MAX(1000, total
/ 100));
4557 if (VLOG_IS_DBG_ENABLED()) {
4561 ds_put_cstr(&s
, "keep");
4562 for (i
= 0; i
< N_BUCKETS
; i
++) {
4564 ds_put_cstr(&s
, ", drop");
4567 ds_put_format(&s
, " %d:%d", i
* BUCKET_WIDTH
, buckets
[i
]);
4570 VLOG_INFO("%s: %s (msec:count)",
4571 dpif_name(ofproto
->dpif
), ds_cstr(&s
));
4575 return bucket
* BUCKET_WIDTH
;
4579 facet_active_timeout(struct ofproto
*ofproto
, struct facet
*facet
)
4581 if (ofproto
->netflow
&& !facet_is_controller_flow(facet
) &&
4582 netflow_active_timeout_expired(ofproto
->netflow
, &facet
->nf_flow
)) {
4583 struct ofexpired expired
;
4584 struct odp_flow odp_flow
;
4586 /* Get updated flow stats.
4588 * XXX We could avoid this call entirely if (1) ofproto_update_used()
4589 * updated TCP flags and (2) the dpif_flow_list_all() in
4590 * ofproto_update_used() zeroed TCP flags. */
4591 memset(&odp_flow
, 0, sizeof odp_flow
);
4592 if (facet
->installed
) {
4593 odp_flow_key_from_flow(&odp_flow
.key
, &facet
->flow
);
4594 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
4595 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
4597 if (odp_flow
.stats
.n_packets
) {
4598 facet_update_time(ofproto
, facet
, &odp_flow
.stats
);
4599 netflow_flow_update_flags(&facet
->nf_flow
,
4600 odp_flow
.stats
.tcp_flags
);
4604 expired
.flow
= facet
->flow
;
4605 expired
.packet_count
= facet
->packet_count
+
4606 odp_flow
.stats
.n_packets
;
4607 expired
.byte_count
= facet
->byte_count
+ odp_flow
.stats
.n_bytes
;
4608 expired
.used
= facet
->used
;
4610 netflow_expire(ofproto
->netflow
, &facet
->nf_flow
, &expired
);
4615 ofproto_expire_facets(struct ofproto
*ofproto
, int dp_max_idle
)
4617 long long int cutoff
= time_msec() - dp_max_idle
;
4618 struct facet
*facet
, *next_facet
;
4620 HMAP_FOR_EACH_SAFE (facet
, next_facet
, hmap_node
, &ofproto
->facets
) {
4621 facet_active_timeout(ofproto
, facet
);
4622 if (facet
->used
< cutoff
) {
4623 facet_remove(ofproto
, facet
);
4628 /* If 'rule' is an OpenFlow rule, that has expired according to OpenFlow rules,
4629 * then delete it entirely. */
4631 rule_expire(struct ofproto
*ofproto
, struct rule
*rule
)
4633 struct facet
*facet
, *next_facet
;
4637 /* Has 'rule' expired? */
4639 if (rule
->hard_timeout
4640 && now
> rule
->created
+ rule
->hard_timeout
* 1000) {
4641 reason
= OFPRR_HARD_TIMEOUT
;
4642 } else if (rule
->idle_timeout
&& list_is_empty(&rule
->facets
)
4643 && now
>rule
->used
+ rule
->idle_timeout
* 1000) {
4644 reason
= OFPRR_IDLE_TIMEOUT
;
4649 COVERAGE_INC(ofproto_expired
);
4651 /* Update stats. (This is a no-op if the rule expired due to an idle
4652 * timeout, because that only happens when the rule has no facets left.) */
4653 LIST_FOR_EACH_SAFE (facet
, next_facet
, list_node
, &rule
->facets
) {
4654 facet_remove(ofproto
, facet
);
4657 /* Get rid of the rule. */
4658 if (!rule_is_hidden(rule
)) {
4659 rule_send_removed(ofproto
, rule
, reason
);
4661 rule_remove(ofproto
, rule
);
4664 static struct ofpbuf
*
4665 compose_ofp_flow_removed(struct ofconn
*ofconn
, const struct rule
*rule
,
4668 struct ofp_flow_removed
*ofr
;
4671 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
4672 ofputil_cls_rule_to_match(&rule
->cr
, ofconn
->flow_format
, &ofr
->match
);
4673 ofr
->cookie
= rule
->flow_cookie
;
4674 ofr
->priority
= htons(rule
->cr
.priority
);
4675 ofr
->reason
= reason
;
4676 calc_flow_duration(rule
->created
, &ofr
->duration_sec
, &ofr
->duration_nsec
);
4677 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
4678 ofr
->packet_count
= htonll(rule
->packet_count
);
4679 ofr
->byte_count
= htonll(rule
->byte_count
);
4684 static struct ofpbuf
*
4685 compose_nx_flow_removed(const struct rule
*rule
, uint8_t reason
)
4687 struct nx_flow_removed
*nfr
;
4691 nfr
= make_nxmsg(sizeof *nfr
, NXT_FLOW_REMOVED
, &buf
);
4693 match_len
= nx_put_match(buf
, &rule
->cr
);
4695 nfr
->cookie
= rule
->flow_cookie
;
4696 nfr
->priority
= htons(rule
->cr
.priority
);
4697 nfr
->reason
= reason
;
4698 calc_flow_duration(rule
->created
, &nfr
->duration_sec
, &nfr
->duration_nsec
);
4699 nfr
->idle_timeout
= htons(rule
->idle_timeout
);
4700 nfr
->match_len
= htons(match_len
);
4701 nfr
->packet_count
= htonll(rule
->packet_count
);
4702 nfr
->byte_count
= htonll(rule
->byte_count
);
4708 rule_send_removed(struct ofproto
*p
, struct rule
*rule
, uint8_t reason
)
4710 struct ofconn
*ofconn
;
4712 if (!rule
->send_flow_removed
) {
4716 LIST_FOR_EACH (ofconn
, node
, &p
->all_conns
) {
4719 if (!rconn_is_connected(ofconn
->rconn
)
4720 || !ofconn_receives_async_msgs(ofconn
)) {
4724 msg
= (ofconn
->flow_format
== NXFF_NXM
4725 ? compose_nx_flow_removed(rule
, reason
)
4726 : compose_ofp_flow_removed(ofconn
, rule
, reason
));
4728 /* Account flow expirations under ofconn->reply_counter, the counter
4729 * for replies to OpenFlow requests. That works because preventing
4730 * OpenFlow requests from being processed also prevents new flows from
4731 * being added (and expiring). (It also prevents processing OpenFlow
4732 * requests that would not add new flows, so it is imperfect.) */
4733 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
4737 /* pinsched callback for sending 'packet' on 'ofconn'. */
4739 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4741 struct ofconn
*ofconn
= ofconn_
;
4743 rconn_send_with_limit(ofconn
->rconn
, packet
,
4744 ofconn
->packet_in_counter
, 100);
4747 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4748 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4749 * packet scheduler for sending.
4751 * 'max_len' specifies the maximum number of bytes of the packet to send on
4752 * 'ofconn' (INT_MAX specifies no limit).
4754 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4755 * ownership is transferred to this function. */
4757 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4760 struct ofproto
*ofproto
= ofconn
->ofproto
;
4761 struct ofp_packet_in
*opi
= packet
->data
;
4762 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4763 int send_len
, trim_size
;
4767 if (opi
->reason
== OFPR_ACTION
) {
4768 buffer_id
= UINT32_MAX
;
4769 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4770 buffer_id
= pktbuf_get_null();
4771 } else if (!ofconn
->pktbuf
) {
4772 buffer_id
= UINT32_MAX
;
4774 struct ofpbuf payload
;
4776 ofpbuf_use_const(&payload
, opi
->data
,
4777 packet
->size
- offsetof(struct ofp_packet_in
, data
));
4778 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4781 /* Figure out how much of the packet to send. */
4782 send_len
= ntohs(opi
->total_len
);
4783 if (buffer_id
!= UINT32_MAX
) {
4784 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4786 send_len
= MIN(send_len
, max_len
);
4788 /* Adjust packet length and clone if necessary. */
4789 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4791 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4794 packet
->size
= trim_size
;
4797 /* Update packet headers. */
4798 opi
->buffer_id
= htonl(buffer_id
);
4799 update_openflow_length(packet
);
4801 /* Hand over to packet scheduler. It might immediately call into
4802 * do_send_packet_in() or it might buffer it for a while (until a later
4803 * call to pinsched_run()). */
4804 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4805 packet
, do_send_packet_in
, ofconn
);
4808 /* Replace struct odp_msg header in 'packet' by equivalent struct
4809 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4810 * returned by dpif_recv()).
4812 * The conversion is not complete: the caller still needs to trim any unneeded
4813 * payload off the end of the buffer, set the length in the OpenFlow header,
4814 * and set buffer_id. Those require us to know the controller settings and so
4815 * must be done on a per-controller basis.
4817 * Returns the maximum number of bytes of the packet that should be sent to
4818 * the controller (INT_MAX if no limit). */
4820 do_convert_to_packet_in(struct ofpbuf
*packet
)
4822 struct odp_msg
*msg
= packet
->data
;
4823 struct ofp_packet_in
*opi
;
4829 /* Extract relevant header fields */
4830 if (msg
->type
== _ODPL_ACTION_NR
) {
4831 reason
= OFPR_ACTION
;
4834 reason
= OFPR_NO_MATCH
;
4837 total_len
= msg
->length
- sizeof *msg
;
4838 in_port
= odp_port_to_ofp_port(msg
->port
);
4840 /* Repurpose packet buffer by overwriting header. */
4841 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4842 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4843 opi
->header
.version
= OFP_VERSION
;
4844 opi
->header
.type
= OFPT_PACKET_IN
;
4845 opi
->total_len
= htons(total_len
);
4846 opi
->in_port
= htons(in_port
);
4847 opi
->reason
= reason
;
4852 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4853 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4854 * as necessary according to their individual configurations.
4856 * 'packet' must have sufficient headroom to convert it into a struct
4857 * ofp_packet_in (e.g. as returned by dpif_recv()).
4859 * Takes ownership of 'packet'. */
4861 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
4863 struct ofconn
*ofconn
, *prev
;
4866 max_len
= do_convert_to_packet_in(packet
);
4869 LIST_FOR_EACH (ofconn
, node
, &ofproto
->all_conns
) {
4870 if (ofconn_receives_async_msgs(ofconn
)) {
4872 schedule_packet_in(prev
, packet
, max_len
, true);
4878 schedule_packet_in(prev
, packet
, max_len
, false);
4880 ofpbuf_delete(packet
);
4885 pick_datapath_id(const struct ofproto
*ofproto
)
4887 const struct ofport
*port
;
4889 port
= get_port(ofproto
, ODPP_LOCAL
);
4891 uint8_t ea
[ETH_ADDR_LEN
];
4894 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4896 return eth_addr_to_uint64(ea
);
4898 VLOG_WARN("could not get MAC address for %s (%s)",
4899 netdev_get_name(port
->netdev
), strerror(error
));
4901 return ofproto
->fallback_dpid
;
4905 pick_fallback_dpid(void)
4907 uint8_t ea
[ETH_ADDR_LEN
];
4908 eth_addr_nicira_random(ea
);
4909 return eth_addr_to_uint64(ea
);
4913 ofproto_unixctl_list(struct unixctl_conn
*conn
, const char *arg OVS_UNUSED
,
4914 void *aux OVS_UNUSED
)
4916 const struct shash_node
*node
;
4920 SHASH_FOR_EACH (node
, &all_ofprotos
) {
4921 ds_put_format(&results
, "%s\n", node
->name
);
4923 unixctl_command_reply(conn
, 200, ds_cstr(&results
));
4924 ds_destroy(&results
);
4927 struct ofproto_trace
{
4928 struct action_xlate_ctx ctx
;
4934 trace_format_rule(struct ds
*result
, int level
, const struct rule
*rule
)
4936 ds_put_char_multiple(result
, '\t', level
);
4938 ds_put_cstr(result
, "No match\n");
4942 ds_put_format(result
, "Rule: cookie=%#"PRIx64
" ",
4943 ntohll(rule
->flow_cookie
));
4944 cls_rule_format(&rule
->cr
, result
);
4945 ds_put_char(result
, '\n');
4947 ds_put_char_multiple(result
, '\t', level
);
4948 ds_put_cstr(result
, "OpenFlow ");
4949 ofp_print_actions(result
, (const struct ofp_action_header
*) rule
->actions
,
4950 rule
->n_actions
* sizeof *rule
->actions
);
4951 ds_put_char(result
, '\n');
4955 trace_format_flow(struct ds
*result
, int level
, const char *title
,
4956 struct ofproto_trace
*trace
)
4958 ds_put_char_multiple(result
, '\t', level
);
4959 ds_put_format(result
, "%s: ", title
);
4960 if (flow_equal(&trace
->ctx
.flow
, &trace
->flow
)) {
4961 ds_put_cstr(result
, "unchanged");
4963 flow_format(result
, &trace
->ctx
.flow
);
4964 trace
->flow
= trace
->ctx
.flow
;
4966 ds_put_char(result
, '\n');
4970 trace_resubmit(struct action_xlate_ctx
*ctx
, const struct rule
*rule
)
4972 struct ofproto_trace
*trace
= CONTAINER_OF(ctx
, struct ofproto_trace
, ctx
);
4973 struct ds
*result
= trace
->result
;
4975 ds_put_char(result
, '\n');
4976 trace_format_flow(result
, ctx
->recurse
+ 1, "Resubmitted flow", trace
);
4977 trace_format_rule(result
, ctx
->recurse
+ 1, rule
);
4981 ofproto_unixctl_trace(struct unixctl_conn
*conn
, const char *args_
,
4982 void *aux OVS_UNUSED
)
4984 char *dpname
, *in_port_s
, *tun_id_s
, *packet_s
;
4985 char *args
= xstrdup(args_
);
4986 char *save_ptr
= NULL
;
4987 struct ofproto
*ofproto
;
4988 struct ofpbuf packet
;
4996 ofpbuf_init(&packet
, strlen(args
) / 2);
4999 dpname
= strtok_r(args
, " ", &save_ptr
);
5000 tun_id_s
= strtok_r(NULL
, " ", &save_ptr
);
5001 in_port_s
= strtok_r(NULL
, " ", &save_ptr
);
5002 packet_s
= strtok_r(NULL
, "", &save_ptr
); /* Get entire rest of line. */
5003 if (!dpname
|| !in_port_s
|| !packet_s
) {
5004 unixctl_command_reply(conn
, 501, "Bad command syntax");
5008 ofproto
= shash_find_data(&all_ofprotos
, dpname
);
5010 unixctl_command_reply(conn
, 501, "Unknown ofproto (use ofproto/list "
5015 tun_id
= ntohl(strtoul(tun_id_s
, NULL
, 10));
5016 in_port
= ofp_port_to_odp_port(atoi(in_port_s
));
5018 packet_s
= ofpbuf_put_hex(&packet
, packet_s
, NULL
);
5019 packet_s
+= strspn(packet_s
, " ");
5020 if (*packet_s
!= '\0') {
5021 unixctl_command_reply(conn
, 501, "Trailing garbage in command");
5024 if (packet
.size
< ETH_HEADER_LEN
) {
5025 unixctl_command_reply(conn
, 501, "Packet data too short for Ethernet");
5029 ds_put_cstr(&result
, "Packet: ");
5030 s
= ofp_packet_to_string(packet
.data
, packet
.size
, packet
.size
);
5031 ds_put_cstr(&result
, s
);
5034 flow_extract(&packet
, tun_id
, in_port
, &flow
);
5035 ds_put_cstr(&result
, "Flow: ");
5036 flow_format(&result
, &flow
);
5037 ds_put_char(&result
, '\n');
5039 rule
= rule_lookup(ofproto
, &flow
);
5040 trace_format_rule(&result
, 0, rule
);
5042 struct ofproto_trace trace
;
5043 struct ofpbuf
*odp_actions
;
5045 trace
.result
= &result
;
5047 action_xlate_ctx_init(&trace
.ctx
, ofproto
, &flow
, &packet
);
5048 trace
.ctx
.resubmit_hook
= trace_resubmit
;
5049 odp_actions
= xlate_actions(&trace
.ctx
,
5050 rule
->actions
, rule
->n_actions
);
5052 ds_put_char(&result
, '\n');
5053 trace_format_flow(&result
, 0, "Final flow", &trace
);
5054 ds_put_cstr(&result
, "Datapath actions: ");
5055 format_odp_actions(&result
, odp_actions
->data
, odp_actions
->size
);
5056 ofpbuf_delete(odp_actions
);
5059 unixctl_command_reply(conn
, 200, ds_cstr(&result
));
5062 ds_destroy(&result
);
5063 ofpbuf_uninit(&packet
);
5068 ofproto_unixctl_init(void)
5070 static bool registered
;
5076 unixctl_command_register("ofproto/list", ofproto_unixctl_list
, NULL
);
5077 unixctl_command_register("ofproto/trace", ofproto_unixctl_trace
, NULL
);
5081 default_normal_ofhook_cb(const struct flow
*flow
, const struct ofpbuf
*packet
,
5082 struct ofpbuf
*odp_actions
, tag_type
*tags
,
5083 uint16_t *nf_output_iface
, void *ofproto_
)
5085 struct ofproto
*ofproto
= ofproto_
;
5088 /* Drop frames for reserved multicast addresses. */
5089 if (eth_addr_is_reserved(flow
->dl_dst
)) {
5093 /* Learn source MAC (but don't try to learn from revalidation). */
5094 if (packet
!= NULL
) {
5095 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
5097 GRAT_ARP_LOCK_NONE
);
5099 /* The log messages here could actually be useful in debugging,
5100 * so keep the rate limit relatively high. */
5101 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
5102 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
5103 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
5104 ofproto_revalidate(ofproto
, rev_tag
);
5108 /* Determine output port. */
5109 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
,
5112 flood_packets(ofproto
, flow
->in_port
, OFPPC_NO_FLOOD
,
5113 nf_output_iface
, odp_actions
);
5114 } else if (out_port
!= flow
->in_port
) {
5115 nl_msg_put_u32(odp_actions
, ODPAT_OUTPUT
, out_port
);
5116 *nf_output_iface
= out_port
;
5124 static const struct ofhooks default_ofhooks
= {
5125 default_normal_ofhook_cb
,