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.
23 #include <netinet/in.h>
26 #include "classifier.h"
28 #include "discovery.h"
30 #include "dynamic-string.h"
31 #include "fail-open.h"
33 #include "mac-learning.h"
37 #include "ofp-print.h"
38 #include "ofproto-sflow.h"
40 #include "openflow/nicira-ext.h"
41 #include "openflow/openflow.h"
42 #include "openvswitch/datapath-protocol.h"
46 #include "poll-loop.h"
47 #include "port-array.h"
52 #include "stream-ssl.h"
60 #define THIS_MODULE VLM_ofproto
63 #include "sflow_api.h"
67 TABLEID_CLASSIFIER
= 1
71 struct netdev
*netdev
;
72 struct ofp_phy_port opp
; /* In host byte order. */
75 static void ofport_free(struct ofport
*);
76 static void hton_ofp_phy_port(struct ofp_phy_port
*);
78 static int xlate_actions(const union ofp_action
*in
, size_t n_in
,
79 const flow_t
*flow
, struct ofproto
*ofproto
,
80 const struct ofpbuf
*packet
,
81 struct odp_actions
*out
, tag_type
*tags
,
82 bool *may_set_up_flow
, uint16_t *nf_output_iface
);
87 uint64_t flow_cookie
; /* Controller-issued identifier.
88 (Kept in network-byte order.) */
89 uint16_t idle_timeout
; /* In seconds from time of last use. */
90 uint16_t hard_timeout
; /* In seconds from time of creation. */
91 bool send_flow_removed
; /* Send a flow removed message? */
92 long long int used
; /* Last-used time (0 if never used). */
93 long long int created
; /* Creation time. */
94 uint64_t packet_count
; /* Number of packets received. */
95 uint64_t byte_count
; /* Number of bytes received. */
96 uint64_t accounted_bytes
; /* Number of bytes passed to account_cb. */
97 tag_type tags
; /* Tags (set only by hooks). */
98 struct netflow_flow nf_flow
; /* Per-flow NetFlow tracking data. */
100 /* If 'super' is non-NULL, this rule is a subrule, that is, it is an
101 * exact-match rule (having cr.wc.wildcards of 0) generated from the
102 * wildcard rule 'super'. In this case, 'list' is an element of the
105 * If 'super' is NULL, this rule is a super-rule, and 'list' is the head of
106 * a list of subrules. A super-rule with no wildcards (where
107 * cr.wc.wildcards is 0) will never have any subrules. */
113 * 'n_actions' is the number of elements in the 'actions' array. A single
114 * action may take up more more than one element's worth of space.
116 * A subrule has no actions (it uses the super-rule's actions). */
118 union ofp_action
*actions
;
122 * A super-rule with wildcard fields never has ODP actions (since the
123 * datapath only supports exact-match flows). */
124 bool installed
; /* Installed in datapath? */
125 bool may_install
; /* True ordinarily; false if actions must
126 * be reassessed for every packet. */
128 union odp_action
*odp_actions
;
132 rule_is_hidden(const struct rule
*rule
)
134 /* Subrules are merely an implementation detail, so hide them from the
136 if (rule
->super
!= NULL
) {
140 /* Rules with priority higher than UINT16_MAX are set up by ofproto itself
141 * (e.g. by in-band control) and are intentionally hidden from the
143 if (rule
->cr
.priority
> UINT16_MAX
) {
150 static struct rule
*rule_create(struct ofproto
*, struct rule
*super
,
151 const union ofp_action
*, size_t n_actions
,
152 uint16_t idle_timeout
, uint16_t hard_timeout
,
153 uint64_t flow_cookie
, bool send_flow_removed
);
154 static void rule_free(struct rule
*);
155 static void rule_destroy(struct ofproto
*, struct rule
*);
156 static struct rule
*rule_from_cls_rule(const struct cls_rule
*);
157 static void rule_insert(struct ofproto
*, struct rule
*,
158 struct ofpbuf
*packet
, uint16_t in_port
);
159 static void rule_remove(struct ofproto
*, struct rule
*);
160 static bool rule_make_actions(struct ofproto
*, struct rule
*,
161 const struct ofpbuf
*packet
);
162 static void rule_install(struct ofproto
*, struct rule
*,
163 struct rule
*displaced_rule
);
164 static void rule_uninstall(struct ofproto
*, struct rule
*);
165 static void rule_post_uninstall(struct ofproto
*, struct rule
*);
166 static void send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
167 long long int now
, uint8_t reason
);
169 /* ofproto supports two kinds of OpenFlow connections:
171 * - "Controller connections": Connections to ordinary OpenFlow controllers.
172 * ofproto maintains persistent connections to these controllers and by
173 * default sends them asynchronous messages such as packet-ins.
175 * - "Transient connections", e.g. from ovs-ofctl. When these connections
176 * drop, it is the other side's responsibility to reconnect them if
177 * necessary. ofproto does not send them asynchronous messages by default.
180 OFCONN_CONTROLLER
, /* An OpenFlow controller. */
181 OFCONN_TRANSIENT
/* A transient connection. */
184 /* An OpenFlow connection. */
186 struct ofproto
*ofproto
; /* The ofproto that owns this connection. */
187 struct list node
; /* In struct ofproto's "all_conns" list. */
188 struct rconn
*rconn
; /* OpenFlow connection. */
189 enum ofconn_type type
; /* Type. */
191 /* OFPT_PACKET_IN related data. */
192 struct rconn_packet_counter
*packet_in_counter
; /* # queued on 'rconn'. */
193 struct pinsched
*schedulers
[2]; /* Indexed by reason code; see below. */
194 struct pktbuf
*pktbuf
; /* OpenFlow packet buffers. */
195 int miss_send_len
; /* Bytes to send of buffered packets. */
197 /* Number of OpenFlow messages queued on 'rconn' as replies to OpenFlow
198 * requests, and the maximum number before we stop reading OpenFlow
200 #define OFCONN_REPLY_MAX 100
201 struct rconn_packet_counter
*reply_counter
;
203 /* type == OFCONN_CONTROLLER only. */
204 enum nx_role role
; /* Role. */
205 struct hmap_node hmap_node
; /* In struct ofproto's "controllers" map. */
206 struct discovery
*discovery
; /* Controller discovery object, if enabled. */
207 struct status_category
*ss
; /* Switch status category. */
208 enum ofproto_band band
; /* In-band or out-of-band? */
211 /* We use OFPR_NO_MATCH and OFPR_ACTION as indexes into struct ofconn's
212 * "schedulers" array. Their values are 0 and 1, and their meanings and values
213 * coincide with _ODPL_MISS_NR and _ODPL_ACTION_NR, so this is convenient. In
214 * case anything ever changes, check their values here. */
215 #define N_SCHEDULERS 2
216 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== 0);
217 BUILD_ASSERT_DECL(OFPR_NO_MATCH
== _ODPL_MISS_NR
);
218 BUILD_ASSERT_DECL(OFPR_ACTION
== 1);
219 BUILD_ASSERT_DECL(OFPR_ACTION
== _ODPL_ACTION_NR
);
221 static struct ofconn
*ofconn_create(struct ofproto
*, struct rconn
*,
223 static void ofconn_destroy(struct ofconn
*);
224 static void ofconn_run(struct ofconn
*, struct ofproto
*);
225 static void ofconn_wait(struct ofconn
*);
226 static bool ofconn_receives_async_msgs(const struct ofconn
*);
228 static void queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
229 struct rconn_packet_counter
*counter
);
231 static void send_packet_in(struct ofproto
*, struct ofpbuf
*odp_msg
);
232 static void do_send_packet_in(struct ofpbuf
*odp_msg
, void *ofconn
);
236 uint64_t datapath_id
; /* Datapath ID. */
237 uint64_t fallback_dpid
; /* Datapath ID if no better choice found. */
238 char *mfr_desc
; /* Manufacturer. */
239 char *hw_desc
; /* Hardware. */
240 char *sw_desc
; /* Software version. */
241 char *serial_desc
; /* Serial number. */
242 char *dp_desc
; /* Datapath description. */
246 struct netdev_monitor
*netdev_monitor
;
247 struct port_array ports
; /* Index is ODP port nr; ofport->opp.port_no is
249 struct shash port_by_name
;
253 struct switch_status
*switch_status
;
254 struct fail_open
*fail_open
;
255 struct netflow
*netflow
;
256 struct ofproto_sflow
*sflow
;
258 /* In-band control. */
259 struct in_band
*in_band
;
260 long long int next_in_band_update
;
261 struct sockaddr_in
*extra_in_band_remotes
;
262 size_t n_extra_remotes
;
265 struct classifier cls
;
266 bool need_revalidate
;
267 long long int next_expiration
;
268 struct tag_set revalidate_set
;
269 bool tun_id_from_cookie
;
271 /* OpenFlow connections. */
272 struct hmap controllers
; /* Controller "struct ofconn"s. */
273 struct list all_conns
; /* Contains "struct ofconn"s. */
274 struct pvconn
**listeners
;
276 struct pvconn
**snoops
;
279 /* Hooks for ovs-vswitchd. */
280 const struct ofhooks
*ofhooks
;
283 /* Used by default ofhooks. */
284 struct mac_learning
*ml
;
287 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
289 static const struct ofhooks default_ofhooks
;
291 static uint64_t pick_datapath_id(const struct ofproto
*);
292 static uint64_t pick_fallback_dpid(void);
294 static void update_used(struct ofproto
*);
295 static void update_stats(struct ofproto
*, struct rule
*,
296 const struct odp_flow_stats
*);
297 static void expire_rule(struct cls_rule
*, void *ofproto
);
298 static void active_timeout(struct ofproto
*ofproto
, struct rule
*rule
);
299 static bool revalidate_rule(struct ofproto
*p
, struct rule
*rule
);
300 static void revalidate_cb(struct cls_rule
*rule_
, void *p_
);
302 static void handle_odp_msg(struct ofproto
*, struct ofpbuf
*);
304 static void handle_openflow(struct ofconn
*, struct ofproto
*,
307 static void refresh_port_groups(struct ofproto
*);
309 static void update_port(struct ofproto
*, const char *devname
);
310 static int init_ports(struct ofproto
*);
311 static void reinit_ports(struct ofproto
*);
314 ofproto_create(const char *datapath
, const char *datapath_type
,
315 const struct ofhooks
*ofhooks
, void *aux
,
316 struct ofproto
**ofprotop
)
318 struct odp_stats stats
;
325 /* Connect to datapath and start listening for messages. */
326 error
= dpif_open(datapath
, datapath_type
, &dpif
);
328 VLOG_ERR("failed to open datapath %s: %s", datapath
, strerror(error
));
331 error
= dpif_get_dp_stats(dpif
, &stats
);
333 VLOG_ERR("failed to obtain stats for datapath %s: %s",
334 datapath
, strerror(error
));
338 error
= dpif_recv_set_mask(dpif
, ODPL_MISS
| ODPL_ACTION
| ODPL_SFLOW
);
340 VLOG_ERR("failed to listen on datapath %s: %s",
341 datapath
, strerror(error
));
345 dpif_flow_flush(dpif
);
346 dpif_recv_purge(dpif
);
348 /* Initialize settings. */
349 p
= xzalloc(sizeof *p
);
350 p
->fallback_dpid
= pick_fallback_dpid();
351 p
->datapath_id
= p
->fallback_dpid
;
352 p
->mfr_desc
= xstrdup(DEFAULT_MFR_DESC
);
353 p
->hw_desc
= xstrdup(DEFAULT_HW_DESC
);
354 p
->sw_desc
= xstrdup(DEFAULT_SW_DESC
);
355 p
->serial_desc
= xstrdup(DEFAULT_SERIAL_DESC
);
356 p
->dp_desc
= xstrdup(DEFAULT_DP_DESC
);
358 /* Initialize datapath. */
360 p
->netdev_monitor
= netdev_monitor_create();
361 port_array_init(&p
->ports
);
362 shash_init(&p
->port_by_name
);
363 p
->max_ports
= stats
.max_ports
;
365 /* Initialize submodules. */
366 p
->switch_status
= switch_status_create(p
);
372 /* Initialize flow table. */
373 classifier_init(&p
->cls
);
374 p
->need_revalidate
= false;
375 p
->next_expiration
= time_msec() + 1000;
376 tag_set_init(&p
->revalidate_set
);
378 /* Initialize OpenFlow connections. */
379 list_init(&p
->all_conns
);
380 hmap_init(&p
->controllers
);
386 /* Initialize hooks. */
388 p
->ofhooks
= ofhooks
;
392 p
->ofhooks
= &default_ofhooks
;
394 p
->ml
= mac_learning_create();
397 /* Pick final datapath ID. */
398 p
->datapath_id
= pick_datapath_id(p
);
399 VLOG_INFO("using datapath ID %016"PRIx64
, p
->datapath_id
);
406 ofproto_set_datapath_id(struct ofproto
*p
, uint64_t datapath_id
)
408 uint64_t old_dpid
= p
->datapath_id
;
409 p
->datapath_id
= datapath_id
? datapath_id
: pick_datapath_id(p
);
410 if (p
->datapath_id
!= old_dpid
) {
411 struct ofconn
*ofconn
;
413 VLOG_INFO("datapath ID changed to %016"PRIx64
, p
->datapath_id
);
415 /* Force all active connections to reconnect, since there is no way to
416 * notify a controller that the datapath ID has changed. */
417 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
418 rconn_reconnect(ofconn
->rconn
);
424 is_discovery_controller(const struct ofproto_controller
*c
)
426 return !strcmp(c
->target
, "discover");
430 is_in_band_controller(const struct ofproto_controller
*c
)
432 return is_discovery_controller(c
) || c
->band
== OFPROTO_IN_BAND
;
435 /* Creates a new controller in 'ofproto'. Some of the settings are initially
436 * drawn from 'c', but update_controller() needs to be called later to finish
437 * the new ofconn's configuration. */
439 add_controller(struct ofproto
*ofproto
, const struct ofproto_controller
*c
)
441 struct discovery
*discovery
;
442 struct ofconn
*ofconn
;
444 if (is_discovery_controller(c
)) {
445 int error
= discovery_create(c
->accept_re
, c
->update_resolv_conf
,
446 ofproto
->dpif
, ofproto
->switch_status
,
455 ofconn
= ofconn_create(ofproto
, rconn_create(5, 8), OFCONN_CONTROLLER
);
456 ofconn
->pktbuf
= pktbuf_create();
457 ofconn
->miss_send_len
= OFP_DEFAULT_MISS_SEND_LEN
;
459 ofconn
->discovery
= discovery
;
461 rconn_connect(ofconn
->rconn
, c
->target
);
463 hmap_insert(&ofproto
->controllers
, &ofconn
->hmap_node
,
464 hash_string(c
->target
, 0));
467 /* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
468 * target or turn discovery on or off (these are done by creating new ofconns
469 * and deleting old ones), but it can update the rest of an ofconn's
472 update_controller(struct ofconn
*ofconn
, const struct ofproto_controller
*c
)
474 struct ofproto
*ofproto
= ofconn
->ofproto
;
478 ofconn
->band
= (is_in_band_controller(c
)
479 ? OFPROTO_IN_BAND
: OFPROTO_OUT_OF_BAND
);
481 rconn_set_max_backoff(ofconn
->rconn
, c
->max_backoff
);
483 probe_interval
= c
->probe_interval
? MAX(c
->probe_interval
, 5) : 0;
484 rconn_set_probe_interval(ofconn
->rconn
, probe_interval
);
486 if (ofconn
->discovery
) {
487 discovery_set_update_resolv_conf(ofconn
->discovery
,
488 c
->update_resolv_conf
);
489 discovery_set_accept_controller_re(ofconn
->discovery
, c
->accept_re
);
492 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
493 struct pinsched
**s
= &ofconn
->schedulers
[i
];
495 if (c
->rate_limit
> 0) {
497 *s
= pinsched_create(c
->rate_limit
, c
->burst_limit
,
498 ofproto
->switch_status
);
500 pinsched_set_limits(*s
, c
->rate_limit
, c
->burst_limit
);
503 pinsched_destroy(*s
);
510 ofconn_get_target(const struct ofconn
*ofconn
)
512 return ofconn
->discovery
? "discover" : rconn_get_name(ofconn
->rconn
);
515 static struct ofconn
*
516 find_controller_by_target(struct ofproto
*ofproto
, const char *target
)
518 struct ofconn
*ofconn
;
520 HMAP_FOR_EACH_WITH_HASH (ofconn
, struct ofconn
, hmap_node
,
521 hash_string(target
, 0), &ofproto
->controllers
) {
522 if (!strcmp(ofconn_get_target(ofconn
), target
)) {
530 update_in_band_remotes(struct ofproto
*ofproto
)
532 const struct ofconn
*ofconn
;
533 struct sockaddr_in
*addrs
;
534 size_t max_addrs
, n_addrs
;
538 /* Allocate enough memory for as many remotes as we could possibly have. */
539 max_addrs
= ofproto
->n_extra_remotes
+ hmap_count(&ofproto
->controllers
);
540 addrs
= xmalloc(max_addrs
* sizeof *addrs
);
543 /* Add all the remotes. */
545 HMAP_FOR_EACH (ofconn
, struct ofconn
, hmap_node
, &ofproto
->controllers
) {
546 struct sockaddr_in
*sin
= &addrs
[n_addrs
];
548 sin
->sin_addr
.s_addr
= rconn_get_remote_ip(ofconn
->rconn
);
549 if (sin
->sin_addr
.s_addr
) {
550 sin
->sin_port
= rconn_get_remote_port(ofconn
->rconn
);
553 if (ofconn
->discovery
) {
557 for (i
= 0; i
< ofproto
->n_extra_remotes
; i
++) {
558 addrs
[n_addrs
++] = ofproto
->extra_in_band_remotes
[i
];
561 /* Create or update or destroy in-band.
563 * Ordinarily we only enable in-band if there's at least one remote
564 * address, but discovery needs the in-band rules for DHCP to be installed
565 * even before we know any remote addresses. */
566 if (n_addrs
|| discovery
) {
567 if (!ofproto
->in_band
) {
568 in_band_create(ofproto
, ofproto
->dpif
, ofproto
->switch_status
,
571 in_band_set_remotes(ofproto
->in_band
, addrs
, n_addrs
);
572 ofproto
->next_in_band_update
= time_msec() + 1000;
574 in_band_destroy(ofproto
->in_band
);
575 ofproto
->in_band
= NULL
;
583 ofproto_set_controllers(struct ofproto
*p
,
584 const struct ofproto_controller
*controllers
,
585 size_t n_controllers
)
587 struct shash new_controllers
;
588 enum ofproto_fail_mode fail_mode
;
589 struct ofconn
*ofconn
, *next
;
593 shash_init(&new_controllers
);
594 for (i
= 0; i
< n_controllers
; i
++) {
595 const struct ofproto_controller
*c
= &controllers
[i
];
597 shash_add_once(&new_controllers
, c
->target
, &controllers
[i
]);
598 if (!find_controller_by_target(p
, c
->target
)) {
599 add_controller(p
, c
);
603 fail_mode
= OFPROTO_FAIL_STANDALONE
;
605 HMAP_FOR_EACH_SAFE (ofconn
, next
, struct ofconn
, hmap_node
,
607 struct ofproto_controller
*c
;
609 c
= shash_find_data(&new_controllers
, ofconn_get_target(ofconn
));
611 ofconn_destroy(ofconn
);
613 update_controller(ofconn
, c
);
617 if (c
->fail
== OFPROTO_FAIL_SECURE
) {
618 fail_mode
= OFPROTO_FAIL_SECURE
;
622 shash_destroy(&new_controllers
);
624 update_in_band_remotes(p
);
626 if (!hmap_is_empty(&p
->controllers
)
627 && fail_mode
== OFPROTO_FAIL_STANDALONE
) {
628 struct rconn
**rconns
;
632 p
->fail_open
= fail_open_create(p
, p
->switch_status
);
636 rconns
= xmalloc(hmap_count(&p
->controllers
) * sizeof *rconns
);
637 HMAP_FOR_EACH (ofconn
, struct ofconn
, hmap_node
, &p
->controllers
) {
638 rconns
[n
++] = ofconn
->rconn
;
641 fail_open_set_controllers(p
->fail_open
, rconns
, n
);
642 /* p->fail_open takes ownership of 'rconns'. */
644 fail_open_destroy(p
->fail_open
);
648 if (!hmap_is_empty(&p
->controllers
) && !ss_exists
) {
649 ofconn
= CONTAINER_OF(hmap_first(&p
->controllers
),
650 struct ofconn
, hmap_node
);
651 ofconn
->ss
= switch_status_register(p
->switch_status
, "remote",
652 rconn_status_cb
, ofconn
->rconn
);
657 any_extras_changed(const struct ofproto
*ofproto
,
658 const struct sockaddr_in
*extras
, size_t n
)
662 if (n
!= ofproto
->n_extra_remotes
) {
666 for (i
= 0; i
< n
; i
++) {
667 const struct sockaddr_in
*old
= &ofproto
->extra_in_band_remotes
[i
];
668 const struct sockaddr_in
*new = &extras
[i
];
670 if (old
->sin_addr
.s_addr
!= new->sin_addr
.s_addr
||
671 old
->sin_port
!= new->sin_port
) {
679 /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
680 * in-band control should guarantee access, in the same way that in-band
681 * control guarantees access to OpenFlow controllers. */
683 ofproto_set_extra_in_band_remotes(struct ofproto
*ofproto
,
684 const struct sockaddr_in
*extras
, size_t n
)
686 if (!any_extras_changed(ofproto
, extras
, n
)) {
690 free(ofproto
->extra_in_band_remotes
);
691 ofproto
->n_extra_remotes
= n
;
692 ofproto
->extra_in_band_remotes
= xmemdup(extras
, n
* sizeof *extras
);
694 update_in_band_remotes(ofproto
);
698 ofproto_set_desc(struct ofproto
*p
,
699 const char *mfr_desc
, const char *hw_desc
,
700 const char *sw_desc
, const char *serial_desc
,
703 struct ofp_desc_stats
*ods
;
706 if (strlen(mfr_desc
) >= sizeof ods
->mfr_desc
) {
707 VLOG_WARN("truncating mfr_desc, must be less than %zu characters",
708 sizeof ods
->mfr_desc
);
711 p
->mfr_desc
= xstrdup(mfr_desc
);
714 if (strlen(hw_desc
) >= sizeof ods
->hw_desc
) {
715 VLOG_WARN("truncating hw_desc, must be less than %zu characters",
716 sizeof ods
->hw_desc
);
719 p
->hw_desc
= xstrdup(hw_desc
);
722 if (strlen(sw_desc
) >= sizeof ods
->sw_desc
) {
723 VLOG_WARN("truncating sw_desc, must be less than %zu characters",
724 sizeof ods
->sw_desc
);
727 p
->sw_desc
= xstrdup(sw_desc
);
730 if (strlen(serial_desc
) >= sizeof ods
->serial_num
) {
731 VLOG_WARN("truncating serial_desc, must be less than %zu "
733 sizeof ods
->serial_num
);
735 free(p
->serial_desc
);
736 p
->serial_desc
= xstrdup(serial_desc
);
739 if (strlen(dp_desc
) >= sizeof ods
->dp_desc
) {
740 VLOG_WARN("truncating dp_desc, must be less than %zu characters",
741 sizeof ods
->dp_desc
);
744 p
->dp_desc
= xstrdup(dp_desc
);
749 set_pvconns(struct pvconn
***pvconnsp
, size_t *n_pvconnsp
,
750 const struct svec
*svec
)
752 struct pvconn
**pvconns
= *pvconnsp
;
753 size_t n_pvconns
= *n_pvconnsp
;
757 for (i
= 0; i
< n_pvconns
; i
++) {
758 pvconn_close(pvconns
[i
]);
762 pvconns
= xmalloc(svec
->n
* sizeof *pvconns
);
764 for (i
= 0; i
< svec
->n
; i
++) {
765 const char *name
= svec
->names
[i
];
766 struct pvconn
*pvconn
;
769 error
= pvconn_open(name
, &pvconn
);
771 pvconns
[n_pvconns
++] = pvconn
;
773 VLOG_ERR("failed to listen on %s: %s", name
, strerror(error
));
781 *n_pvconnsp
= n_pvconns
;
787 ofproto_set_listeners(struct ofproto
*ofproto
, const struct svec
*listeners
)
789 return set_pvconns(&ofproto
->listeners
, &ofproto
->n_listeners
, listeners
);
793 ofproto_set_snoops(struct ofproto
*ofproto
, const struct svec
*snoops
)
795 return set_pvconns(&ofproto
->snoops
, &ofproto
->n_snoops
, snoops
);
799 ofproto_set_netflow(struct ofproto
*ofproto
,
800 const struct netflow_options
*nf_options
)
802 if (nf_options
&& nf_options
->collectors
.n
) {
803 if (!ofproto
->netflow
) {
804 ofproto
->netflow
= netflow_create();
806 return netflow_set_options(ofproto
->netflow
, nf_options
);
808 netflow_destroy(ofproto
->netflow
);
809 ofproto
->netflow
= NULL
;
815 ofproto_set_sflow(struct ofproto
*ofproto
,
816 const struct ofproto_sflow_options
*oso
)
818 struct ofproto_sflow
*os
= ofproto
->sflow
;
821 struct ofport
*ofport
;
822 unsigned int odp_port
;
824 os
= ofproto
->sflow
= ofproto_sflow_create(ofproto
->dpif
);
825 refresh_port_groups(ofproto
);
826 PORT_ARRAY_FOR_EACH (ofport
, &ofproto
->ports
, odp_port
) {
827 ofproto_sflow_add_port(os
, odp_port
,
828 netdev_get_name(ofport
->netdev
));
831 ofproto_sflow_set_options(os
, oso
);
833 ofproto_sflow_destroy(os
);
834 ofproto
->sflow
= NULL
;
839 ofproto_set_stp(struct ofproto
*ofproto OVS_UNUSED
, bool enable_stp
)
843 VLOG_WARN("STP is not yet implemented");
851 ofproto_get_datapath_id(const struct ofproto
*ofproto
)
853 return ofproto
->datapath_id
;
857 ofproto_has_controller(const struct ofproto
*ofproto
)
859 return !hmap_is_empty(&ofproto
->controllers
);
863 ofproto_get_listeners(const struct ofproto
*ofproto
, struct svec
*listeners
)
867 for (i
= 0; i
< ofproto
->n_listeners
; i
++) {
868 svec_add(listeners
, pvconn_get_name(ofproto
->listeners
[i
]));
873 ofproto_get_snoops(const struct ofproto
*ofproto
, struct svec
*snoops
)
877 for (i
= 0; i
< ofproto
->n_snoops
; i
++) {
878 svec_add(snoops
, pvconn_get_name(ofproto
->snoops
[i
]));
883 ofproto_destroy(struct ofproto
*p
)
885 struct ofconn
*ofconn
, *next_ofconn
;
886 struct ofport
*ofport
;
887 unsigned int port_no
;
894 /* Destroy fail-open and in-band early, since they touch the classifier. */
895 fail_open_destroy(p
->fail_open
);
898 in_band_destroy(p
->in_band
);
900 free(p
->extra_in_band_remotes
);
902 ofproto_flush_flows(p
);
903 classifier_destroy(&p
->cls
);
905 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
907 ofconn_destroy(ofconn
);
909 hmap_destroy(&p
->controllers
);
912 netdev_monitor_destroy(p
->netdev_monitor
);
913 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
916 shash_destroy(&p
->port_by_name
);
918 switch_status_destroy(p
->switch_status
);
919 netflow_destroy(p
->netflow
);
920 ofproto_sflow_destroy(p
->sflow
);
922 for (i
= 0; i
< p
->n_listeners
; i
++) {
923 pvconn_close(p
->listeners
[i
]);
927 for (i
= 0; i
< p
->n_snoops
; i
++) {
928 pvconn_close(p
->snoops
[i
]);
932 mac_learning_destroy(p
->ml
);
937 free(p
->serial_desc
);
940 port_array_destroy(&p
->ports
);
946 ofproto_run(struct ofproto
*p
)
948 int error
= ofproto_run1(p
);
950 error
= ofproto_run2(p
, false);
956 process_port_change(struct ofproto
*ofproto
, int error
, char *devname
)
958 if (error
== ENOBUFS
) {
959 reinit_ports(ofproto
);
961 update_port(ofproto
, devname
);
966 /* Returns a "preference level" for snooping 'ofconn'. A higher return value
967 * means that 'ofconn' is more interesting for monitoring than a lower return
970 snoop_preference(const struct ofconn
*ofconn
)
972 switch (ofconn
->role
) {
980 /* Shouldn't happen. */
985 /* One of ofproto's "snoop" pvconns has accepted a new connection on 'vconn'.
986 * Connects this vconn to a controller. */
988 add_snooper(struct ofproto
*ofproto
, struct vconn
*vconn
)
990 struct ofconn
*ofconn
, *best
;
992 /* Pick a controller for monitoring. */
994 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &ofproto
->all_conns
) {
995 if (ofconn
->type
== OFCONN_CONTROLLER
996 && (!best
|| snoop_preference(ofconn
) > snoop_preference(best
))) {
1002 rconn_add_monitor(best
->rconn
, vconn
);
1004 VLOG_INFO_RL(&rl
, "no controller connection to snoop");
1010 ofproto_run1(struct ofproto
*p
)
1012 struct ofconn
*ofconn
, *next_ofconn
;
1017 if (shash_is_empty(&p
->port_by_name
)) {
1021 for (i
= 0; i
< 50; i
++) {
1025 error
= dpif_recv(p
->dpif
, &buf
);
1027 if (error
== ENODEV
) {
1028 /* Someone destroyed the datapath behind our back. The caller
1029 * better destroy us and give up, because we're just going to
1030 * spin from here on out. */
1031 static struct vlog_rate_limit rl2
= VLOG_RATE_LIMIT_INIT(1, 5);
1032 VLOG_ERR_RL(&rl2
, "%s: datapath was destroyed externally",
1033 dpif_name(p
->dpif
));
1039 handle_odp_msg(p
, buf
);
1042 while ((error
= dpif_port_poll(p
->dpif
, &devname
)) != EAGAIN
) {
1043 process_port_change(p
, error
, devname
);
1045 while ((error
= netdev_monitor_poll(p
->netdev_monitor
,
1046 &devname
)) != EAGAIN
) {
1047 process_port_change(p
, error
, devname
);
1051 if (time_msec() >= p
->next_in_band_update
) {
1052 update_in_band_remotes(p
);
1054 in_band_run(p
->in_band
);
1057 LIST_FOR_EACH_SAFE (ofconn
, next_ofconn
, struct ofconn
, node
,
1059 ofconn_run(ofconn
, p
);
1062 /* Fail-open maintenance. Do this after processing the ofconns since
1063 * fail-open checks the status of the controller rconn. */
1065 fail_open_run(p
->fail_open
);
1068 for (i
= 0; i
< p
->n_listeners
; i
++) {
1069 struct vconn
*vconn
;
1072 retval
= pvconn_accept(p
->listeners
[i
], OFP_VERSION
, &vconn
);
1074 ofconn_create(p
, rconn_new_from_vconn("passive", vconn
),
1076 } else if (retval
!= EAGAIN
) {
1077 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1081 for (i
= 0; i
< p
->n_snoops
; i
++) {
1082 struct vconn
*vconn
;
1085 retval
= pvconn_accept(p
->snoops
[i
], OFP_VERSION
, &vconn
);
1087 add_snooper(p
, vconn
);
1088 } else if (retval
!= EAGAIN
) {
1089 VLOG_WARN_RL(&rl
, "accept failed (%s)", strerror(retval
));
1093 if (time_msec() >= p
->next_expiration
) {
1094 COVERAGE_INC(ofproto_expiration
);
1095 p
->next_expiration
= time_msec() + 1000;
1098 classifier_for_each(&p
->cls
, CLS_INC_ALL
, expire_rule
, p
);
1100 /* Let the hook know that we're at a stable point: all outstanding data
1101 * in existing flows has been accounted to the account_cb. Thus, the
1102 * hook can now reasonably do operations that depend on having accurate
1103 * flow volume accounting (currently, that's just bond rebalancing). */
1104 if (p
->ofhooks
->account_checkpoint_cb
) {
1105 p
->ofhooks
->account_checkpoint_cb(p
->aux
);
1110 netflow_run(p
->netflow
);
1113 ofproto_sflow_run(p
->sflow
);
1119 struct revalidate_cbdata
{
1120 struct ofproto
*ofproto
;
1121 bool revalidate_all
; /* Revalidate all exact-match rules? */
1122 bool revalidate_subrules
; /* Revalidate all exact-match subrules? */
1123 struct tag_set revalidate_set
; /* Set of tags to revalidate. */
1127 ofproto_run2(struct ofproto
*p
, bool revalidate_all
)
1129 if (p
->need_revalidate
|| revalidate_all
1130 || !tag_set_is_empty(&p
->revalidate_set
)) {
1131 struct revalidate_cbdata cbdata
;
1133 cbdata
.revalidate_all
= revalidate_all
;
1134 cbdata
.revalidate_subrules
= p
->need_revalidate
;
1135 cbdata
.revalidate_set
= p
->revalidate_set
;
1136 tag_set_init(&p
->revalidate_set
);
1137 COVERAGE_INC(ofproto_revalidate
);
1138 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, revalidate_cb
, &cbdata
);
1139 p
->need_revalidate
= false;
1146 ofproto_wait(struct ofproto
*p
)
1148 struct ofconn
*ofconn
;
1151 dpif_recv_wait(p
->dpif
);
1152 dpif_port_poll_wait(p
->dpif
);
1153 netdev_monitor_poll_wait(p
->netdev_monitor
);
1154 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1155 ofconn_wait(ofconn
);
1158 poll_timer_wait(p
->next_in_band_update
- time_msec());
1159 in_band_wait(p
->in_band
);
1162 fail_open_wait(p
->fail_open
);
1165 ofproto_sflow_wait(p
->sflow
);
1167 if (!tag_set_is_empty(&p
->revalidate_set
)) {
1168 poll_immediate_wake();
1170 if (p
->need_revalidate
) {
1171 /* Shouldn't happen, but if it does just go around again. */
1172 VLOG_DBG_RL(&rl
, "need revalidate in ofproto_wait_cb()");
1173 poll_immediate_wake();
1174 } else if (p
->next_expiration
!= LLONG_MAX
) {
1175 poll_timer_wait(p
->next_expiration
- time_msec());
1177 for (i
= 0; i
< p
->n_listeners
; i
++) {
1178 pvconn_wait(p
->listeners
[i
]);
1180 for (i
= 0; i
< p
->n_snoops
; i
++) {
1181 pvconn_wait(p
->snoops
[i
]);
1186 ofproto_revalidate(struct ofproto
*ofproto
, tag_type tag
)
1188 tag_set_add(&ofproto
->revalidate_set
, tag
);
1192 ofproto_get_revalidate_set(struct ofproto
*ofproto
)
1194 return &ofproto
->revalidate_set
;
1198 ofproto_is_alive(const struct ofproto
*p
)
1200 return !hmap_is_empty(&p
->controllers
);
1204 ofproto_send_packet(struct ofproto
*p
, const flow_t
*flow
,
1205 const union ofp_action
*actions
, size_t n_actions
,
1206 const struct ofpbuf
*packet
)
1208 struct odp_actions odp_actions
;
1211 error
= xlate_actions(actions
, n_actions
, flow
, p
, packet
, &odp_actions
,
1217 /* XXX Should we translate the dpif_execute() errno value into an OpenFlow
1219 dpif_execute(p
->dpif
, flow
->in_port
, odp_actions
.actions
,
1220 odp_actions
.n_actions
, packet
);
1225 ofproto_add_flow(struct ofproto
*p
,
1226 const flow_t
*flow
, uint32_t wildcards
, unsigned int priority
,
1227 const union ofp_action
*actions
, size_t n_actions
,
1231 rule
= rule_create(p
, NULL
, actions
, n_actions
,
1232 idle_timeout
>= 0 ? idle_timeout
: 5 /* XXX */,
1234 cls_rule_from_flow(flow
, wildcards
, priority
, &rule
->cr
);
1235 rule_insert(p
, rule
, NULL
, 0);
1239 ofproto_delete_flow(struct ofproto
*ofproto
, const flow_t
*flow
,
1240 uint32_t wildcards
, unsigned int priority
)
1244 rule
= rule_from_cls_rule(classifier_find_rule_exactly(&ofproto
->cls
,
1248 rule_remove(ofproto
, rule
);
1253 destroy_rule(struct cls_rule
*rule_
, void *ofproto_
)
1255 struct rule
*rule
= rule_from_cls_rule(rule_
);
1256 struct ofproto
*ofproto
= ofproto_
;
1258 /* Mark the flow as not installed, even though it might really be
1259 * installed, so that rule_remove() doesn't bother trying to uninstall it.
1260 * There is no point in uninstalling it individually since we are about to
1261 * blow away all the flows with dpif_flow_flush(). */
1262 rule
->installed
= false;
1264 rule_remove(ofproto
, rule
);
1268 ofproto_flush_flows(struct ofproto
*ofproto
)
1270 COVERAGE_INC(ofproto_flush
);
1271 classifier_for_each(&ofproto
->cls
, CLS_INC_ALL
, destroy_rule
, ofproto
);
1272 dpif_flow_flush(ofproto
->dpif
);
1273 if (ofproto
->in_band
) {
1274 in_band_flushed(ofproto
->in_band
);
1276 if (ofproto
->fail_open
) {
1277 fail_open_flushed(ofproto
->fail_open
);
1282 reinit_ports(struct ofproto
*p
)
1284 struct svec devnames
;
1285 struct ofport
*ofport
;
1286 unsigned int port_no
;
1287 struct odp_port
*odp_ports
;
1291 svec_init(&devnames
);
1292 PORT_ARRAY_FOR_EACH (ofport
, &p
->ports
, port_no
) {
1293 svec_add (&devnames
, (char *) ofport
->opp
.name
);
1295 dpif_port_list(p
->dpif
, &odp_ports
, &n_odp_ports
);
1296 for (i
= 0; i
< n_odp_ports
; i
++) {
1297 svec_add (&devnames
, odp_ports
[i
].devname
);
1301 svec_sort_unique(&devnames
);
1302 for (i
= 0; i
< devnames
.n
; i
++) {
1303 update_port(p
, devnames
.names
[i
]);
1305 svec_destroy(&devnames
);
1309 refresh_port_group(struct ofproto
*p
, unsigned int group
)
1313 struct ofport
*port
;
1314 unsigned int port_no
;
1316 assert(group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
);
1318 ports
= xmalloc(port_array_count(&p
->ports
) * sizeof *ports
);
1320 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
1321 if (group
== DP_GROUP_ALL
|| !(port
->opp
.config
& OFPPC_NO_FLOOD
)) {
1322 ports
[n_ports
++] = port_no
;
1325 dpif_port_group_set(p
->dpif
, group
, ports
, n_ports
);
1332 refresh_port_groups(struct ofproto
*p
)
1334 size_t n_flood
= refresh_port_group(p
, DP_GROUP_FLOOD
);
1335 size_t n_all
= refresh_port_group(p
, DP_GROUP_ALL
);
1337 ofproto_sflow_set_group_sizes(p
->sflow
, n_flood
, n_all
);
1341 static struct ofport
*
1342 make_ofport(const struct odp_port
*odp_port
)
1344 struct netdev_options netdev_options
;
1345 enum netdev_flags flags
;
1346 struct ofport
*ofport
;
1347 struct netdev
*netdev
;
1351 memset(&netdev_options
, 0, sizeof netdev_options
);
1352 netdev_options
.name
= odp_port
->devname
;
1353 netdev_options
.ethertype
= NETDEV_ETH_TYPE_NONE
;
1354 netdev_options
.may_open
= true;
1356 error
= netdev_open(&netdev_options
, &netdev
);
1358 VLOG_WARN_RL(&rl
, "ignoring port %s (%"PRIu16
") because netdev %s "
1359 "cannot be opened (%s)",
1360 odp_port
->devname
, odp_port
->port
,
1361 odp_port
->devname
, strerror(error
));
1365 ofport
= xmalloc(sizeof *ofport
);
1366 ofport
->netdev
= netdev
;
1367 ofport
->opp
.port_no
= odp_port_to_ofp_port(odp_port
->port
);
1368 netdev_get_etheraddr(netdev
, ofport
->opp
.hw_addr
);
1369 memcpy(ofport
->opp
.name
, odp_port
->devname
,
1370 MIN(sizeof ofport
->opp
.name
, sizeof odp_port
->devname
));
1371 ofport
->opp
.name
[sizeof ofport
->opp
.name
- 1] = '\0';
1373 netdev_get_flags(netdev
, &flags
);
1374 ofport
->opp
.config
= flags
& NETDEV_UP
? 0 : OFPPC_PORT_DOWN
;
1376 netdev_get_carrier(netdev
, &carrier
);
1377 ofport
->opp
.state
= carrier
? 0 : OFPPS_LINK_DOWN
;
1379 netdev_get_features(netdev
,
1380 &ofport
->opp
.curr
, &ofport
->opp
.advertised
,
1381 &ofport
->opp
.supported
, &ofport
->opp
.peer
);
1386 ofport_conflicts(const struct ofproto
*p
, const struct odp_port
*odp_port
)
1388 if (port_array_get(&p
->ports
, odp_port
->port
)) {
1389 VLOG_WARN_RL(&rl
, "ignoring duplicate port %"PRIu16
" in datapath",
1392 } else if (shash_find(&p
->port_by_name
, odp_port
->devname
)) {
1393 VLOG_WARN_RL(&rl
, "ignoring duplicate device %s in datapath",
1402 ofport_equal(const struct ofport
*a_
, const struct ofport
*b_
)
1404 const struct ofp_phy_port
*a
= &a_
->opp
;
1405 const struct ofp_phy_port
*b
= &b_
->opp
;
1407 BUILD_ASSERT_DECL(sizeof *a
== 48); /* Detect ofp_phy_port changes. */
1408 return (a
->port_no
== b
->port_no
1409 && !memcmp(a
->hw_addr
, b
->hw_addr
, sizeof a
->hw_addr
)
1410 && !strcmp((char *) a
->name
, (char *) b
->name
)
1411 && a
->state
== b
->state
1412 && a
->config
== b
->config
1413 && a
->curr
== b
->curr
1414 && a
->advertised
== b
->advertised
1415 && a
->supported
== b
->supported
1416 && a
->peer
== b
->peer
);
1420 send_port_status(struct ofproto
*p
, const struct ofport
*ofport
,
1423 /* XXX Should limit the number of queued port status change messages. */
1424 struct ofconn
*ofconn
;
1425 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
1426 struct ofp_port_status
*ops
;
1429 if (!ofconn_receives_async_msgs(ofconn
)) {
1433 ops
= make_openflow_xid(sizeof *ops
, OFPT_PORT_STATUS
, 0, &b
);
1434 ops
->reason
= reason
;
1435 ops
->desc
= ofport
->opp
;
1436 hton_ofp_phy_port(&ops
->desc
);
1437 queue_tx(b
, ofconn
, NULL
);
1439 if (p
->ofhooks
->port_changed_cb
) {
1440 p
->ofhooks
->port_changed_cb(reason
, &ofport
->opp
, p
->aux
);
1445 ofport_install(struct ofproto
*p
, struct ofport
*ofport
)
1447 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1448 const char *netdev_name
= (const char *) ofport
->opp
.name
;
1450 netdev_monitor_add(p
->netdev_monitor
, ofport
->netdev
);
1451 port_array_set(&p
->ports
, odp_port
, ofport
);
1452 shash_add(&p
->port_by_name
, netdev_name
, ofport
);
1454 ofproto_sflow_add_port(p
->sflow
, odp_port
, netdev_name
);
1459 ofport_remove(struct ofproto
*p
, struct ofport
*ofport
)
1461 uint16_t odp_port
= ofp_port_to_odp_port(ofport
->opp
.port_no
);
1463 netdev_monitor_remove(p
->netdev_monitor
, ofport
->netdev
);
1464 port_array_set(&p
->ports
, odp_port
, NULL
);
1465 shash_delete(&p
->port_by_name
,
1466 shash_find(&p
->port_by_name
, (char *) ofport
->opp
.name
));
1468 ofproto_sflow_del_port(p
->sflow
, odp_port
);
1473 ofport_free(struct ofport
*ofport
)
1476 netdev_close(ofport
->netdev
);
1482 update_port(struct ofproto
*p
, const char *devname
)
1484 struct odp_port odp_port
;
1485 struct ofport
*old_ofport
;
1486 struct ofport
*new_ofport
;
1489 COVERAGE_INC(ofproto_update_port
);
1491 /* Query the datapath for port information. */
1492 error
= dpif_port_query_by_name(p
->dpif
, devname
, &odp_port
);
1494 /* Find the old ofport. */
1495 old_ofport
= shash_find_data(&p
->port_by_name
, devname
);
1498 /* There's no port named 'devname' but there might be a port with
1499 * the same port number. This could happen if a port is deleted
1500 * and then a new one added in its place very quickly, or if a port
1501 * is renamed. In the former case we want to send an OFPPR_DELETE
1502 * and an OFPPR_ADD, and in the latter case we want to send a
1503 * single OFPPR_MODIFY. We can distinguish the cases by comparing
1504 * the old port's ifindex against the new port, or perhaps less
1505 * reliably but more portably by comparing the old port's MAC
1506 * against the new port's MAC. However, this code isn't that smart
1507 * and always sends an OFPPR_MODIFY (XXX). */
1508 old_ofport
= port_array_get(&p
->ports
, odp_port
.port
);
1510 } else if (error
!= ENOENT
&& error
!= ENODEV
) {
1511 VLOG_WARN_RL(&rl
, "dpif_port_query_by_name returned unexpected error "
1512 "%s", strerror(error
));
1516 /* Create a new ofport. */
1517 new_ofport
= !error
? make_ofport(&odp_port
) : NULL
;
1519 /* Eliminate a few pathological cases. */
1520 if (!old_ofport
&& !new_ofport
) {
1522 } else if (old_ofport
&& new_ofport
) {
1523 /* Most of the 'config' bits are OpenFlow soft state, but
1524 * OFPPC_PORT_DOWN is maintained the kernel. So transfer the OpenFlow
1525 * bits from old_ofport. (make_ofport() only sets OFPPC_PORT_DOWN and
1526 * leaves the other bits 0.) */
1527 new_ofport
->opp
.config
|= old_ofport
->opp
.config
& ~OFPPC_PORT_DOWN
;
1529 if (ofport_equal(old_ofport
, new_ofport
)) {
1530 /* False alarm--no change. */
1531 ofport_free(new_ofport
);
1536 /* Now deal with the normal cases. */
1538 ofport_remove(p
, old_ofport
);
1541 ofport_install(p
, new_ofport
);
1543 send_port_status(p
, new_ofport
? new_ofport
: old_ofport
,
1544 (!old_ofport
? OFPPR_ADD
1545 : !new_ofport
? OFPPR_DELETE
1547 ofport_free(old_ofport
);
1549 /* Update port groups. */
1550 refresh_port_groups(p
);
1554 init_ports(struct ofproto
*p
)
1556 struct odp_port
*ports
;
1561 error
= dpif_port_list(p
->dpif
, &ports
, &n_ports
);
1566 for (i
= 0; i
< n_ports
; i
++) {
1567 const struct odp_port
*odp_port
= &ports
[i
];
1568 if (!ofport_conflicts(p
, odp_port
)) {
1569 struct ofport
*ofport
= make_ofport(odp_port
);
1571 ofport_install(p
, ofport
);
1576 refresh_port_groups(p
);
1580 static struct ofconn
*
1581 ofconn_create(struct ofproto
*p
, struct rconn
*rconn
, enum ofconn_type type
)
1583 struct ofconn
*ofconn
= xzalloc(sizeof *ofconn
);
1584 ofconn
->ofproto
= p
;
1585 list_push_back(&p
->all_conns
, &ofconn
->node
);
1586 ofconn
->rconn
= rconn
;
1587 ofconn
->type
= type
;
1588 ofconn
->role
= NX_ROLE_OTHER
;
1589 ofconn
->packet_in_counter
= rconn_packet_counter_create ();
1590 ofconn
->pktbuf
= NULL
;
1591 ofconn
->miss_send_len
= 0;
1592 ofconn
->reply_counter
= rconn_packet_counter_create ();
1597 ofconn_destroy(struct ofconn
*ofconn
)
1599 if (ofconn
->type
== OFCONN_CONTROLLER
) {
1600 hmap_remove(&ofconn
->ofproto
->controllers
, &ofconn
->hmap_node
);
1602 discovery_destroy(ofconn
->discovery
);
1604 list_remove(&ofconn
->node
);
1605 switch_status_unregister(ofconn
->ss
);
1606 rconn_destroy(ofconn
->rconn
);
1607 rconn_packet_counter_destroy(ofconn
->packet_in_counter
);
1608 rconn_packet_counter_destroy(ofconn
->reply_counter
);
1609 pktbuf_destroy(ofconn
->pktbuf
);
1614 ofconn_run(struct ofconn
*ofconn
, struct ofproto
*p
)
1619 if (ofconn
->discovery
) {
1620 char *controller_name
;
1621 if (rconn_is_connectivity_questionable(ofconn
->rconn
)) {
1622 discovery_question_connectivity(ofconn
->discovery
);
1624 if (discovery_run(ofconn
->discovery
, &controller_name
)) {
1625 if (controller_name
) {
1626 rconn_connect(ofconn
->rconn
, controller_name
);
1628 rconn_disconnect(ofconn
->rconn
);
1633 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1634 pinsched_run(ofconn
->schedulers
[i
], do_send_packet_in
, ofconn
);
1637 rconn_run(ofconn
->rconn
);
1639 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1640 /* Limit the number of iterations to prevent other tasks from
1642 for (iteration
= 0; iteration
< 50; iteration
++) {
1643 struct ofpbuf
*of_msg
= rconn_recv(ofconn
->rconn
);
1648 fail_open_maybe_recover(p
->fail_open
);
1650 handle_openflow(ofconn
, p
, of_msg
);
1651 ofpbuf_delete(of_msg
);
1655 if (!ofconn
->discovery
&& !rconn_is_alive(ofconn
->rconn
)) {
1656 ofconn_destroy(ofconn
);
1661 ofconn_wait(struct ofconn
*ofconn
)
1665 if (ofconn
->discovery
) {
1666 discovery_wait(ofconn
->discovery
);
1668 for (i
= 0; i
< N_SCHEDULERS
; i
++) {
1669 pinsched_wait(ofconn
->schedulers
[i
]);
1671 rconn_run_wait(ofconn
->rconn
);
1672 if (rconn_packet_counter_read (ofconn
->reply_counter
) < OFCONN_REPLY_MAX
) {
1673 rconn_recv_wait(ofconn
->rconn
);
1675 COVERAGE_INC(ofproto_ofconn_stuck
);
1679 /* Returns true if 'ofconn' should receive asynchronous messages. */
1681 ofconn_receives_async_msgs(const struct ofconn
*ofconn
)
1683 if (ofconn
->type
== OFCONN_CONTROLLER
) {
1684 /* Ordinary controllers always get asynchronous messages unless they
1685 * have configured themselves as "slaves". */
1686 return ofconn
->role
!= NX_ROLE_SLAVE
;
1688 /* Transient connections don't get asynchronous messages unless they
1689 * have explicitly asked for them by setting a nonzero miss send
1691 return ofconn
->miss_send_len
> 0;
1695 /* Caller is responsible for initializing the 'cr' member of the returned
1697 static struct rule
*
1698 rule_create(struct ofproto
*ofproto
, struct rule
*super
,
1699 const union ofp_action
*actions
, size_t n_actions
,
1700 uint16_t idle_timeout
, uint16_t hard_timeout
,
1701 uint64_t flow_cookie
, bool send_flow_removed
)
1703 struct rule
*rule
= xzalloc(sizeof *rule
);
1704 rule
->idle_timeout
= idle_timeout
;
1705 rule
->hard_timeout
= hard_timeout
;
1706 rule
->flow_cookie
= flow_cookie
;
1707 rule
->used
= rule
->created
= time_msec();
1708 rule
->send_flow_removed
= send_flow_removed
;
1709 rule
->super
= super
;
1711 list_push_back(&super
->list
, &rule
->list
);
1713 list_init(&rule
->list
);
1715 rule
->n_actions
= n_actions
;
1716 rule
->actions
= xmemdup(actions
, n_actions
* sizeof *actions
);
1717 netflow_flow_clear(&rule
->nf_flow
);
1718 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->created
);
1723 static struct rule
*
1724 rule_from_cls_rule(const struct cls_rule
*cls_rule
)
1726 return cls_rule
? CONTAINER_OF(cls_rule
, struct rule
, cr
) : NULL
;
1730 rule_free(struct rule
*rule
)
1732 free(rule
->actions
);
1733 free(rule
->odp_actions
);
1737 /* Destroys 'rule'. If 'rule' is a subrule, also removes it from its
1738 * super-rule's list of subrules. If 'rule' is a super-rule, also iterates
1739 * through all of its subrules and revalidates them, destroying any that no
1740 * longer has a super-rule (which is probably all of them).
1742 * Before calling this function, the caller must make have removed 'rule' from
1743 * the classifier. If 'rule' is an exact-match rule, the caller is also
1744 * responsible for ensuring that it has been uninstalled from the datapath. */
1746 rule_destroy(struct ofproto
*ofproto
, struct rule
*rule
)
1749 struct rule
*subrule
, *next
;
1750 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
1751 revalidate_rule(ofproto
, subrule
);
1754 list_remove(&rule
->list
);
1760 rule_has_out_port(const struct rule
*rule
, uint16_t out_port
)
1762 const union ofp_action
*oa
;
1763 struct actions_iterator i
;
1765 if (out_port
== htons(OFPP_NONE
)) {
1768 for (oa
= actions_first(&i
, rule
->actions
, rule
->n_actions
); oa
;
1769 oa
= actions_next(&i
)) {
1770 if (oa
->type
== htons(OFPAT_OUTPUT
) && oa
->output
.port
== out_port
) {
1777 /* Executes the actions indicated by 'rule' on 'packet', which is in flow
1778 * 'flow' and is considered to have arrived on ODP port 'in_port'.
1780 * The flow that 'packet' actually contains does not need to actually match
1781 * 'rule'; the actions in 'rule' will be applied to it either way. Likewise,
1782 * the packet and byte counters for 'rule' will be credited for the packet sent
1783 * out whether or not the packet actually matches 'rule'.
1785 * If 'rule' is an exact-match rule and 'flow' actually equals the rule's flow,
1786 * the caller must already have accurately composed ODP actions for it given
1787 * 'packet' using rule_make_actions(). If 'rule' is a wildcard rule, or if
1788 * 'rule' is an exact-match rule but 'flow' is not the rule's flow, then this
1789 * function will compose a set of ODP actions based on 'rule''s OpenFlow
1790 * actions and apply them to 'packet'. */
1792 rule_execute(struct ofproto
*ofproto
, struct rule
*rule
,
1793 struct ofpbuf
*packet
, const flow_t
*flow
)
1795 const union odp_action
*actions
;
1797 struct odp_actions a
;
1799 /* Grab or compose the ODP actions.
1801 * The special case for an exact-match 'rule' where 'flow' is not the
1802 * rule's flow is important to avoid, e.g., sending a packet out its input
1803 * port simply because the ODP actions were composed for the wrong
1805 if (rule
->cr
.wc
.wildcards
|| !flow_equal(flow
, &rule
->cr
.flow
)) {
1806 struct rule
*super
= rule
->super
? rule
->super
: rule
;
1807 if (xlate_actions(super
->actions
, super
->n_actions
, flow
, ofproto
,
1808 packet
, &a
, NULL
, 0, NULL
)) {
1811 actions
= a
.actions
;
1812 n_actions
= a
.n_actions
;
1814 actions
= rule
->odp_actions
;
1815 n_actions
= rule
->n_odp_actions
;
1818 /* Execute the ODP actions. */
1819 if (!dpif_execute(ofproto
->dpif
, flow
->in_port
,
1820 actions
, n_actions
, packet
)) {
1821 struct odp_flow_stats stats
;
1822 flow_extract_stats(flow
, packet
, &stats
);
1823 update_stats(ofproto
, rule
, &stats
);
1824 rule
->used
= time_msec();
1825 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, rule
->used
);
1830 rule_insert(struct ofproto
*p
, struct rule
*rule
, struct ofpbuf
*packet
,
1833 struct rule
*displaced_rule
;
1835 /* Insert the rule in the classifier. */
1836 displaced_rule
= rule_from_cls_rule(classifier_insert(&p
->cls
, &rule
->cr
));
1837 if (!rule
->cr
.wc
.wildcards
) {
1838 rule_make_actions(p
, rule
, packet
);
1841 /* Send the packet and credit it to the rule. */
1844 flow_extract(packet
, 0, in_port
, &flow
);
1845 rule_execute(p
, rule
, packet
, &flow
);
1848 /* Install the rule in the datapath only after sending the packet, to
1849 * avoid packet reordering. */
1850 if (rule
->cr
.wc
.wildcards
) {
1851 COVERAGE_INC(ofproto_add_wc_flow
);
1852 p
->need_revalidate
= true;
1854 rule_install(p
, rule
, displaced_rule
);
1857 /* Free the rule that was displaced, if any. */
1858 if (displaced_rule
) {
1859 rule_destroy(p
, displaced_rule
);
1863 static struct rule
*
1864 rule_create_subrule(struct ofproto
*ofproto
, struct rule
*rule
,
1867 struct rule
*subrule
= rule_create(ofproto
, rule
, NULL
, 0,
1868 rule
->idle_timeout
, rule
->hard_timeout
,
1870 COVERAGE_INC(ofproto_subrule_create
);
1871 cls_rule_from_flow(flow
, 0, (rule
->cr
.priority
<= UINT16_MAX
? UINT16_MAX
1872 : rule
->cr
.priority
), &subrule
->cr
);
1873 classifier_insert_exact(&ofproto
->cls
, &subrule
->cr
);
1879 rule_remove(struct ofproto
*ofproto
, struct rule
*rule
)
1881 if (rule
->cr
.wc
.wildcards
) {
1882 COVERAGE_INC(ofproto_del_wc_flow
);
1883 ofproto
->need_revalidate
= true;
1885 rule_uninstall(ofproto
, rule
);
1887 classifier_remove(&ofproto
->cls
, &rule
->cr
);
1888 rule_destroy(ofproto
, rule
);
1891 /* Returns true if the actions changed, false otherwise. */
1893 rule_make_actions(struct ofproto
*p
, struct rule
*rule
,
1894 const struct ofpbuf
*packet
)
1896 const struct rule
*super
;
1897 struct odp_actions a
;
1900 assert(!rule
->cr
.wc
.wildcards
);
1902 super
= rule
->super
? rule
->super
: rule
;
1904 xlate_actions(super
->actions
, super
->n_actions
, &rule
->cr
.flow
, p
,
1905 packet
, &a
, &rule
->tags
, &rule
->may_install
,
1906 &rule
->nf_flow
.output_iface
);
1908 actions_len
= a
.n_actions
* sizeof *a
.actions
;
1909 if (rule
->n_odp_actions
!= a
.n_actions
1910 || memcmp(rule
->odp_actions
, a
.actions
, actions_len
)) {
1911 COVERAGE_INC(ofproto_odp_unchanged
);
1912 free(rule
->odp_actions
);
1913 rule
->n_odp_actions
= a
.n_actions
;
1914 rule
->odp_actions
= xmemdup(a
.actions
, actions_len
);
1922 do_put_flow(struct ofproto
*ofproto
, struct rule
*rule
, int flags
,
1923 struct odp_flow_put
*put
)
1925 memset(&put
->flow
.stats
, 0, sizeof put
->flow
.stats
);
1926 put
->flow
.key
= rule
->cr
.flow
;
1927 put
->flow
.actions
= rule
->odp_actions
;
1928 put
->flow
.n_actions
= rule
->n_odp_actions
;
1929 put
->flow
.flags
= 0;
1931 return dpif_flow_put(ofproto
->dpif
, put
);
1935 rule_install(struct ofproto
*p
, struct rule
*rule
, struct rule
*displaced_rule
)
1937 assert(!rule
->cr
.wc
.wildcards
);
1939 if (rule
->may_install
) {
1940 struct odp_flow_put put
;
1941 if (!do_put_flow(p
, rule
,
1942 ODPPF_CREATE
| ODPPF_MODIFY
| ODPPF_ZERO_STATS
,
1944 rule
->installed
= true;
1945 if (displaced_rule
) {
1946 update_stats(p
, displaced_rule
, &put
.flow
.stats
);
1947 rule_post_uninstall(p
, displaced_rule
);
1950 } else if (displaced_rule
) {
1951 rule_uninstall(p
, displaced_rule
);
1956 rule_reinstall(struct ofproto
*ofproto
, struct rule
*rule
)
1958 if (rule
->installed
) {
1959 struct odp_flow_put put
;
1960 COVERAGE_INC(ofproto_dp_missed
);
1961 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
, &put
);
1963 rule_install(ofproto
, rule
, NULL
);
1968 rule_update_actions(struct ofproto
*ofproto
, struct rule
*rule
)
1970 bool actions_changed
;
1971 uint16_t new_out_iface
, old_out_iface
;
1973 old_out_iface
= rule
->nf_flow
.output_iface
;
1974 actions_changed
= rule_make_actions(ofproto
, rule
, NULL
);
1976 if (rule
->may_install
) {
1977 if (rule
->installed
) {
1978 if (actions_changed
) {
1979 struct odp_flow_put put
;
1980 do_put_flow(ofproto
, rule
, ODPPF_CREATE
| ODPPF_MODIFY
1981 | ODPPF_ZERO_STATS
, &put
);
1982 update_stats(ofproto
, rule
, &put
.flow
.stats
);
1984 /* Temporarily set the old output iface so that NetFlow
1985 * messages have the correct output interface for the old
1987 new_out_iface
= rule
->nf_flow
.output_iface
;
1988 rule
->nf_flow
.output_iface
= old_out_iface
;
1989 rule_post_uninstall(ofproto
, rule
);
1990 rule
->nf_flow
.output_iface
= new_out_iface
;
1993 rule_install(ofproto
, rule
, NULL
);
1996 rule_uninstall(ofproto
, rule
);
2001 rule_account(struct ofproto
*ofproto
, struct rule
*rule
, uint64_t extra_bytes
)
2003 uint64_t total_bytes
= rule
->byte_count
+ extra_bytes
;
2005 if (ofproto
->ofhooks
->account_flow_cb
2006 && total_bytes
> rule
->accounted_bytes
)
2008 ofproto
->ofhooks
->account_flow_cb(
2009 &rule
->cr
.flow
, rule
->odp_actions
, rule
->n_odp_actions
,
2010 total_bytes
- rule
->accounted_bytes
, ofproto
->aux
);
2011 rule
->accounted_bytes
= total_bytes
;
2016 rule_uninstall(struct ofproto
*p
, struct rule
*rule
)
2018 assert(!rule
->cr
.wc
.wildcards
);
2019 if (rule
->installed
) {
2020 struct odp_flow odp_flow
;
2022 odp_flow
.key
= rule
->cr
.flow
;
2023 odp_flow
.actions
= NULL
;
2024 odp_flow
.n_actions
= 0;
2026 if (!dpif_flow_del(p
->dpif
, &odp_flow
)) {
2027 update_stats(p
, rule
, &odp_flow
.stats
);
2029 rule
->installed
= false;
2031 rule_post_uninstall(p
, rule
);
2036 is_controller_rule(struct rule
*rule
)
2038 /* If the only action is send to the controller then don't report
2039 * NetFlow expiration messages since it is just part of the control
2040 * logic for the network and not real traffic. */
2042 if (rule
&& rule
->super
) {
2043 struct rule
*super
= rule
->super
;
2045 return super
->n_actions
== 1 &&
2046 super
->actions
[0].type
== htons(OFPAT_OUTPUT
) &&
2047 super
->actions
[0].output
.port
== htons(OFPP_CONTROLLER
);
2054 rule_post_uninstall(struct ofproto
*ofproto
, struct rule
*rule
)
2056 struct rule
*super
= rule
->super
;
2058 rule_account(ofproto
, rule
, 0);
2060 if (ofproto
->netflow
&& !is_controller_rule(rule
)) {
2061 struct ofexpired expired
;
2062 expired
.flow
= rule
->cr
.flow
;
2063 expired
.packet_count
= rule
->packet_count
;
2064 expired
.byte_count
= rule
->byte_count
;
2065 expired
.used
= rule
->used
;
2066 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
2069 super
->packet_count
+= rule
->packet_count
;
2070 super
->byte_count
+= rule
->byte_count
;
2072 /* Reset counters to prevent double counting if the rule ever gets
2074 rule
->packet_count
= 0;
2075 rule
->byte_count
= 0;
2076 rule
->accounted_bytes
= 0;
2078 netflow_flow_clear(&rule
->nf_flow
);
2083 queue_tx(struct ofpbuf
*msg
, const struct ofconn
*ofconn
,
2084 struct rconn_packet_counter
*counter
)
2086 update_openflow_length(msg
);
2087 if (rconn_send(ofconn
->rconn
, msg
, counter
)) {
2093 send_error(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2094 int error
, const void *data
, size_t len
)
2097 struct ofp_error_msg
*oem
;
2099 if (!(error
>> 16)) {
2100 VLOG_WARN_RL(&rl
, "not sending bad error code %d to controller",
2105 COVERAGE_INC(ofproto_error
);
2106 oem
= make_openflow_xid(len
+ sizeof *oem
, OFPT_ERROR
,
2107 oh
? oh
->xid
: 0, &buf
);
2108 oem
->type
= htons((unsigned int) error
>> 16);
2109 oem
->code
= htons(error
& 0xffff);
2110 memcpy(oem
->data
, data
, len
);
2111 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2115 send_error_oh(const struct ofconn
*ofconn
, const struct ofp_header
*oh
,
2118 size_t oh_length
= ntohs(oh
->length
);
2119 send_error(ofconn
, oh
, error
, oh
, MIN(oh_length
, 64));
2123 hton_ofp_phy_port(struct ofp_phy_port
*opp
)
2125 opp
->port_no
= htons(opp
->port_no
);
2126 opp
->config
= htonl(opp
->config
);
2127 opp
->state
= htonl(opp
->state
);
2128 opp
->curr
= htonl(opp
->curr
);
2129 opp
->advertised
= htonl(opp
->advertised
);
2130 opp
->supported
= htonl(opp
->supported
);
2131 opp
->peer
= htonl(opp
->peer
);
2135 handle_echo_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
2137 struct ofp_header
*rq
= oh
;
2138 queue_tx(make_echo_reply(rq
), ofconn
, ofconn
->reply_counter
);
2143 handle_features_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2144 struct ofp_header
*oh
)
2146 struct ofp_switch_features
*osf
;
2148 unsigned int port_no
;
2149 struct ofport
*port
;
2151 osf
= make_openflow_xid(sizeof *osf
, OFPT_FEATURES_REPLY
, oh
->xid
, &buf
);
2152 osf
->datapath_id
= htonll(p
->datapath_id
);
2153 osf
->n_buffers
= htonl(pktbuf_capacity());
2155 osf
->capabilities
= htonl(OFPC_FLOW_STATS
| OFPC_TABLE_STATS
|
2156 OFPC_PORT_STATS
| OFPC_ARP_MATCH_IP
);
2157 osf
->actions
= htonl((1u << OFPAT_OUTPUT
) |
2158 (1u << OFPAT_SET_VLAN_VID
) |
2159 (1u << OFPAT_SET_VLAN_PCP
) |
2160 (1u << OFPAT_STRIP_VLAN
) |
2161 (1u << OFPAT_SET_DL_SRC
) |
2162 (1u << OFPAT_SET_DL_DST
) |
2163 (1u << OFPAT_SET_NW_SRC
) |
2164 (1u << OFPAT_SET_NW_DST
) |
2165 (1u << OFPAT_SET_NW_TOS
) |
2166 (1u << OFPAT_SET_TP_SRC
) |
2167 (1u << OFPAT_SET_TP_DST
));
2169 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2170 hton_ofp_phy_port(ofpbuf_put(buf
, &port
->opp
, sizeof port
->opp
));
2173 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2178 handle_get_config_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2179 struct ofp_header
*oh
)
2182 struct ofp_switch_config
*osc
;
2186 /* Figure out flags. */
2187 dpif_get_drop_frags(p
->dpif
, &drop_frags
);
2188 flags
= drop_frags
? OFPC_FRAG_DROP
: OFPC_FRAG_NORMAL
;
2191 osc
= make_openflow_xid(sizeof *osc
, OFPT_GET_CONFIG_REPLY
, oh
->xid
, &buf
);
2192 osc
->flags
= htons(flags
);
2193 osc
->miss_send_len
= htons(ofconn
->miss_send_len
);
2194 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
2200 handle_set_config(struct ofproto
*p
, struct ofconn
*ofconn
,
2201 struct ofp_switch_config
*osc
)
2206 error
= check_ofp_message(&osc
->header
, OFPT_SET_CONFIG
, sizeof *osc
);
2210 flags
= ntohs(osc
->flags
);
2212 if (ofconn
->type
== OFCONN_CONTROLLER
&& ofconn
->role
!= NX_ROLE_SLAVE
) {
2213 switch (flags
& OFPC_FRAG_MASK
) {
2214 case OFPC_FRAG_NORMAL
:
2215 dpif_set_drop_frags(p
->dpif
, false);
2217 case OFPC_FRAG_DROP
:
2218 dpif_set_drop_frags(p
->dpif
, true);
2221 VLOG_WARN_RL(&rl
, "requested bad fragment mode (flags=%"PRIx16
")",
2227 ofconn
->miss_send_len
= ntohs(osc
->miss_send_len
);
2233 add_output_group_action(struct odp_actions
*actions
, uint16_t group
,
2234 uint16_t *nf_output_iface
)
2236 odp_actions_add(actions
, ODPAT_OUTPUT_GROUP
)->output_group
.group
= group
;
2238 if (group
== DP_GROUP_ALL
|| group
== DP_GROUP_FLOOD
) {
2239 *nf_output_iface
= NF_OUT_FLOOD
;
2244 add_controller_action(struct odp_actions
*actions
,
2245 const struct ofp_action_output
*oao
)
2247 union odp_action
*a
= odp_actions_add(actions
, ODPAT_CONTROLLER
);
2248 a
->controller
.arg
= ntohs(oao
->max_len
);
2251 struct action_xlate_ctx
{
2253 flow_t flow
; /* Flow to which these actions correspond. */
2254 int recurse
; /* Recursion level, via xlate_table_action. */
2255 struct ofproto
*ofproto
;
2256 const struct ofpbuf
*packet
; /* The packet corresponding to 'flow', or a
2257 * null pointer if we are revalidating
2258 * without a packet to refer to. */
2261 struct odp_actions
*out
; /* Datapath actions. */
2262 tag_type
*tags
; /* Tags associated with OFPP_NORMAL actions. */
2263 bool may_set_up_flow
; /* True ordinarily; false if the actions must
2264 * be reassessed for every packet. */
2265 uint16_t nf_output_iface
; /* Output interface index for NetFlow. */
2268 static void do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2269 struct action_xlate_ctx
*ctx
);
2272 add_output_action(struct action_xlate_ctx
*ctx
, uint16_t port
)
2274 const struct ofport
*ofport
= port_array_get(&ctx
->ofproto
->ports
, port
);
2277 if (ofport
->opp
.config
& OFPPC_NO_FWD
) {
2278 /* Forwarding disabled on port. */
2283 * We don't have an ofport record for this port, but it doesn't hurt to
2284 * allow forwarding to it anyhow. Maybe such a port will appear later
2285 * and we're pre-populating the flow table.
2289 odp_actions_add(ctx
->out
, ODPAT_OUTPUT
)->output
.port
= port
;
2290 ctx
->nf_output_iface
= port
;
2293 static struct rule
*
2294 lookup_valid_rule(struct ofproto
*ofproto
, const flow_t
*flow
)
2297 rule
= rule_from_cls_rule(classifier_lookup(&ofproto
->cls
, flow
));
2299 /* The rule we found might not be valid, since we could be in need of
2300 * revalidation. If it is not valid, don't return it. */
2303 && ofproto
->need_revalidate
2304 && !revalidate_rule(ofproto
, rule
)) {
2305 COVERAGE_INC(ofproto_invalidated
);
2313 xlate_table_action(struct action_xlate_ctx
*ctx
, uint16_t in_port
)
2315 if (!ctx
->recurse
) {
2316 uint16_t old_in_port
;
2319 /* Look up a flow with 'in_port' as the input port. Then restore the
2320 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2321 * have surprising behavior). */
2322 old_in_port
= ctx
->flow
.in_port
;
2323 ctx
->flow
.in_port
= in_port
;
2324 rule
= lookup_valid_rule(ctx
->ofproto
, &ctx
->flow
);
2325 ctx
->flow
.in_port
= old_in_port
;
2333 do_xlate_actions(rule
->actions
, rule
->n_actions
, ctx
);
2340 xlate_output_action(struct action_xlate_ctx
*ctx
,
2341 const struct ofp_action_output
*oao
)
2344 uint16_t prev_nf_output_iface
= ctx
->nf_output_iface
;
2346 ctx
->nf_output_iface
= NF_OUT_DROP
;
2348 switch (ntohs(oao
->port
)) {
2350 add_output_action(ctx
, ctx
->flow
.in_port
);
2353 xlate_table_action(ctx
, ctx
->flow
.in_port
);
2356 if (!ctx
->ofproto
->ofhooks
->normal_cb(&ctx
->flow
, ctx
->packet
,
2357 ctx
->out
, ctx
->tags
,
2358 &ctx
->nf_output_iface
,
2359 ctx
->ofproto
->aux
)) {
2360 COVERAGE_INC(ofproto_uninstallable
);
2361 ctx
->may_set_up_flow
= false;
2365 add_output_group_action(ctx
->out
, DP_GROUP_FLOOD
,
2366 &ctx
->nf_output_iface
);
2369 add_output_group_action(ctx
->out
, DP_GROUP_ALL
, &ctx
->nf_output_iface
);
2371 case OFPP_CONTROLLER
:
2372 add_controller_action(ctx
->out
, oao
);
2375 add_output_action(ctx
, ODPP_LOCAL
);
2378 odp_port
= ofp_port_to_odp_port(ntohs(oao
->port
));
2379 if (odp_port
!= ctx
->flow
.in_port
) {
2380 add_output_action(ctx
, odp_port
);
2385 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2386 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2387 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
2388 ctx
->nf_output_iface
= prev_nf_output_iface
;
2389 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2390 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
2391 ctx
->nf_output_iface
= NF_OUT_MULTI
;
2396 xlate_nicira_action(struct action_xlate_ctx
*ctx
,
2397 const struct nx_action_header
*nah
)
2399 const struct nx_action_resubmit
*nar
;
2400 const struct nx_action_set_tunnel
*nast
;
2401 union odp_action
*oa
;
2402 int subtype
= ntohs(nah
->subtype
);
2404 assert(nah
->vendor
== htonl(NX_VENDOR_ID
));
2406 case NXAST_RESUBMIT
:
2407 nar
= (const struct nx_action_resubmit
*) nah
;
2408 xlate_table_action(ctx
, ofp_port_to_odp_port(ntohs(nar
->in_port
)));
2411 case NXAST_SET_TUNNEL
:
2412 nast
= (const struct nx_action_set_tunnel
*) nah
;
2413 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TUNNEL
);
2414 ctx
->flow
.tun_id
= oa
->tunnel
.tun_id
= nast
->tun_id
;
2417 /* If you add a new action here that modifies flow data, don't forget to
2418 * update the flow key in ctx->flow in the same key. */
2421 VLOG_DBG_RL(&rl
, "unknown Nicira action type %"PRIu16
, subtype
);
2427 do_xlate_actions(const union ofp_action
*in
, size_t n_in
,
2428 struct action_xlate_ctx
*ctx
)
2430 struct actions_iterator iter
;
2431 const union ofp_action
*ia
;
2432 const struct ofport
*port
;
2434 port
= port_array_get(&ctx
->ofproto
->ports
, ctx
->flow
.in_port
);
2435 if (port
&& port
->opp
.config
& (OFPPC_NO_RECV
| OFPPC_NO_RECV_STP
) &&
2436 port
->opp
.config
& (eth_addr_equals(ctx
->flow
.dl_dst
, stp_eth_addr
)
2437 ? OFPPC_NO_RECV_STP
: OFPPC_NO_RECV
)) {
2438 /* Drop this flow. */
2442 for (ia
= actions_first(&iter
, in
, n_in
); ia
; ia
= actions_next(&iter
)) {
2443 uint16_t type
= ntohs(ia
->type
);
2444 union odp_action
*oa
;
2448 xlate_output_action(ctx
, &ia
->output
);
2451 case OFPAT_SET_VLAN_VID
:
2452 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_VID
);
2453 ctx
->flow
.dl_vlan
= oa
->vlan_vid
.vlan_vid
= ia
->vlan_vid
.vlan_vid
;
2456 case OFPAT_SET_VLAN_PCP
:
2457 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_VLAN_PCP
);
2458 ctx
->flow
.dl_vlan_pcp
= oa
->vlan_pcp
.vlan_pcp
= ia
->vlan_pcp
.vlan_pcp
;
2461 case OFPAT_STRIP_VLAN
:
2462 odp_actions_add(ctx
->out
, ODPAT_STRIP_VLAN
);
2463 ctx
->flow
.dl_vlan
= OFP_VLAN_NONE
;
2464 ctx
->flow
.dl_vlan_pcp
= 0;
2467 case OFPAT_SET_DL_SRC
:
2468 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_SRC
);
2469 memcpy(oa
->dl_addr
.dl_addr
,
2470 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2471 memcpy(ctx
->flow
.dl_src
,
2472 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2475 case OFPAT_SET_DL_DST
:
2476 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_DL_DST
);
2477 memcpy(oa
->dl_addr
.dl_addr
,
2478 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2479 memcpy(ctx
->flow
.dl_dst
,
2480 ((struct ofp_action_dl_addr
*) ia
)->dl_addr
, ETH_ADDR_LEN
);
2483 case OFPAT_SET_NW_SRC
:
2484 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_SRC
);
2485 ctx
->flow
.nw_src
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2488 case OFPAT_SET_NW_DST
:
2489 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_DST
);
2490 ctx
->flow
.nw_dst
= oa
->nw_addr
.nw_addr
= ia
->nw_addr
.nw_addr
;
2493 case OFPAT_SET_NW_TOS
:
2494 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_NW_TOS
);
2495 ctx
->flow
.nw_tos
= oa
->nw_tos
.nw_tos
= ia
->nw_tos
.nw_tos
;
2498 case OFPAT_SET_TP_SRC
:
2499 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_SRC
);
2500 ctx
->flow
.tp_src
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2503 case OFPAT_SET_TP_DST
:
2504 oa
= odp_actions_add(ctx
->out
, ODPAT_SET_TP_DST
);
2505 ctx
->flow
.tp_dst
= oa
->tp_port
.tp_port
= ia
->tp_port
.tp_port
;
2509 xlate_nicira_action(ctx
, (const struct nx_action_header
*) ia
);
2513 VLOG_DBG_RL(&rl
, "unknown action type %"PRIu16
, type
);
2520 xlate_actions(const union ofp_action
*in
, size_t n_in
,
2521 const flow_t
*flow
, struct ofproto
*ofproto
,
2522 const struct ofpbuf
*packet
,
2523 struct odp_actions
*out
, tag_type
*tags
, bool *may_set_up_flow
,
2524 uint16_t *nf_output_iface
)
2526 tag_type no_tags
= 0;
2527 struct action_xlate_ctx ctx
;
2528 COVERAGE_INC(ofproto_ofp2odp
);
2529 odp_actions_init(out
);
2532 ctx
.ofproto
= ofproto
;
2533 ctx
.packet
= packet
;
2535 ctx
.tags
= tags
? tags
: &no_tags
;
2536 ctx
.may_set_up_flow
= true;
2537 ctx
.nf_output_iface
= NF_OUT_DROP
;
2538 do_xlate_actions(in
, n_in
, &ctx
);
2540 /* Check with in-band control to see if we're allowed to set up this
2542 if (!in_band_rule_check(ofproto
->in_band
, flow
, out
)) {
2543 ctx
.may_set_up_flow
= false;
2546 if (may_set_up_flow
) {
2547 *may_set_up_flow
= ctx
.may_set_up_flow
;
2549 if (nf_output_iface
) {
2550 *nf_output_iface
= ctx
.nf_output_iface
;
2552 if (odp_actions_overflow(out
)) {
2553 odp_actions_init(out
);
2554 return ofp_mkerr(OFPET_BAD_ACTION
, OFPBAC_TOO_MANY
);
2559 /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
2560 * error message code (composed with ofp_mkerr()) for the caller to propagate
2561 * upward. Otherwise, returns 0.
2563 * 'oh' is used to make log messages more informative. */
2565 reject_slave_controller(struct ofconn
*ofconn
, const struct ofp_header
*oh
)
2567 if (ofconn
->type
== OFCONN_CONTROLLER
&& ofconn
->role
== NX_ROLE_SLAVE
) {
2568 static struct vlog_rate_limit perm_rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2571 type_name
= ofp_message_type_to_string(oh
->type
);
2572 VLOG_WARN_RL(&perm_rl
, "rejecting %s message from slave controller",
2576 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
2583 handle_packet_out(struct ofproto
*p
, struct ofconn
*ofconn
,
2584 struct ofp_header
*oh
)
2586 struct ofp_packet_out
*opo
;
2587 struct ofpbuf payload
, *buffer
;
2588 struct odp_actions actions
;
2594 error
= reject_slave_controller(ofconn
, oh
);
2599 error
= check_ofp_packet_out(oh
, &payload
, &n_actions
, p
->max_ports
);
2603 opo
= (struct ofp_packet_out
*) oh
;
2605 COVERAGE_INC(ofproto_packet_out
);
2606 if (opo
->buffer_id
!= htonl(UINT32_MAX
)) {
2607 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(opo
->buffer_id
),
2609 if (error
|| !buffer
) {
2617 flow_extract(&payload
, 0, ofp_port_to_odp_port(ntohs(opo
->in_port
)), &flow
);
2618 error
= xlate_actions((const union ofp_action
*) opo
->actions
, n_actions
,
2619 &flow
, p
, &payload
, &actions
, NULL
, NULL
, NULL
);
2624 dpif_execute(p
->dpif
, flow
.in_port
, actions
.actions
, actions
.n_actions
,
2626 ofpbuf_delete(buffer
);
2632 update_port_config(struct ofproto
*p
, struct ofport
*port
,
2633 uint32_t config
, uint32_t mask
)
2635 mask
&= config
^ port
->opp
.config
;
2636 if (mask
& OFPPC_PORT_DOWN
) {
2637 if (config
& OFPPC_PORT_DOWN
) {
2638 netdev_turn_flags_off(port
->netdev
, NETDEV_UP
, true);
2640 netdev_turn_flags_on(port
->netdev
, NETDEV_UP
, true);
2643 #define REVALIDATE_BITS (OFPPC_NO_RECV | OFPPC_NO_RECV_STP | OFPPC_NO_FWD)
2644 if (mask
& REVALIDATE_BITS
) {
2645 COVERAGE_INC(ofproto_costly_flags
);
2646 port
->opp
.config
^= mask
& REVALIDATE_BITS
;
2647 p
->need_revalidate
= true;
2649 #undef REVALIDATE_BITS
2650 if (mask
& OFPPC_NO_FLOOD
) {
2651 port
->opp
.config
^= OFPPC_NO_FLOOD
;
2652 refresh_port_groups(p
);
2654 if (mask
& OFPPC_NO_PACKET_IN
) {
2655 port
->opp
.config
^= OFPPC_NO_PACKET_IN
;
2660 handle_port_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
2661 struct ofp_header
*oh
)
2663 const struct ofp_port_mod
*opm
;
2664 struct ofport
*port
;
2667 error
= reject_slave_controller(ofconn
, oh
);
2671 error
= check_ofp_message(oh
, OFPT_PORT_MOD
, sizeof *opm
);
2675 opm
= (struct ofp_port_mod
*) oh
;
2677 port
= port_array_get(&p
->ports
,
2678 ofp_port_to_odp_port(ntohs(opm
->port_no
)));
2680 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_PORT
);
2681 } else if (memcmp(port
->opp
.hw_addr
, opm
->hw_addr
, OFP_ETH_ALEN
)) {
2682 return ofp_mkerr(OFPET_PORT_MOD_FAILED
, OFPPMFC_BAD_HW_ADDR
);
2684 update_port_config(p
, port
, ntohl(opm
->config
), ntohl(opm
->mask
));
2685 if (opm
->advertise
) {
2686 netdev_set_advertisements(port
->netdev
, ntohl(opm
->advertise
));
2692 static struct ofpbuf
*
2693 make_stats_reply(uint32_t xid
, uint16_t type
, size_t body_len
)
2695 struct ofp_stats_reply
*osr
;
2698 msg
= ofpbuf_new(MIN(sizeof *osr
+ body_len
, UINT16_MAX
));
2699 osr
= put_openflow_xid(sizeof *osr
, OFPT_STATS_REPLY
, xid
, msg
);
2701 osr
->flags
= htons(0);
2705 static struct ofpbuf
*
2706 start_stats_reply(const struct ofp_stats_request
*request
, size_t body_len
)
2708 return make_stats_reply(request
->header
.xid
, request
->type
, body_len
);
2712 append_stats_reply(size_t nbytes
, struct ofconn
*ofconn
, struct ofpbuf
**msgp
)
2714 struct ofpbuf
*msg
= *msgp
;
2715 assert(nbytes
<= UINT16_MAX
- sizeof(struct ofp_stats_reply
));
2716 if (nbytes
+ msg
->size
> UINT16_MAX
) {
2717 struct ofp_stats_reply
*reply
= msg
->data
;
2718 reply
->flags
= htons(OFPSF_REPLY_MORE
);
2719 *msgp
= make_stats_reply(reply
->header
.xid
, reply
->type
, nbytes
);
2720 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2722 return ofpbuf_put_uninit(*msgp
, nbytes
);
2726 handle_desc_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2727 struct ofp_stats_request
*request
)
2729 struct ofp_desc_stats
*ods
;
2732 msg
= start_stats_reply(request
, sizeof *ods
);
2733 ods
= append_stats_reply(sizeof *ods
, ofconn
, &msg
);
2734 memset(ods
, 0, sizeof *ods
);
2735 ovs_strlcpy(ods
->mfr_desc
, p
->mfr_desc
, sizeof ods
->mfr_desc
);
2736 ovs_strlcpy(ods
->hw_desc
, p
->hw_desc
, sizeof ods
->hw_desc
);
2737 ovs_strlcpy(ods
->sw_desc
, p
->sw_desc
, sizeof ods
->sw_desc
);
2738 ovs_strlcpy(ods
->serial_num
, p
->serial_desc
, sizeof ods
->serial_num
);
2739 ovs_strlcpy(ods
->dp_desc
, p
->dp_desc
, sizeof ods
->dp_desc
);
2740 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2746 count_subrules(struct cls_rule
*cls_rule
, void *n_subrules_
)
2748 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
2749 int *n_subrules
= n_subrules_
;
2757 handle_table_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2758 struct ofp_stats_request
*request
)
2760 struct ofp_table_stats
*ots
;
2762 struct odp_stats dpstats
;
2763 int n_exact
, n_subrules
, n_wild
;
2765 msg
= start_stats_reply(request
, sizeof *ots
* 2);
2767 /* Count rules of various kinds. */
2769 classifier_for_each(&p
->cls
, CLS_INC_EXACT
, count_subrules
, &n_subrules
);
2770 n_exact
= classifier_count_exact(&p
->cls
) - n_subrules
;
2771 n_wild
= classifier_count(&p
->cls
) - classifier_count_exact(&p
->cls
);
2774 dpif_get_dp_stats(p
->dpif
, &dpstats
);
2775 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2776 memset(ots
, 0, sizeof *ots
);
2777 ots
->table_id
= TABLEID_HASH
;
2778 strcpy(ots
->name
, "hash");
2779 ots
->wildcards
= htonl(0);
2780 ots
->max_entries
= htonl(dpstats
.max_capacity
);
2781 ots
->active_count
= htonl(n_exact
);
2782 ots
->lookup_count
= htonll(dpstats
.n_frags
+ dpstats
.n_hit
+
2784 ots
->matched_count
= htonll(dpstats
.n_hit
); /* XXX */
2786 /* Classifier table. */
2787 ots
= append_stats_reply(sizeof *ots
, ofconn
, &msg
);
2788 memset(ots
, 0, sizeof *ots
);
2789 ots
->table_id
= TABLEID_CLASSIFIER
;
2790 strcpy(ots
->name
, "classifier");
2791 ots
->wildcards
= p
->tun_id_from_cookie
? htonl(OVSFW_ALL
)
2793 ots
->max_entries
= htonl(65536);
2794 ots
->active_count
= htonl(n_wild
);
2795 ots
->lookup_count
= htonll(0); /* XXX */
2796 ots
->matched_count
= htonll(0); /* XXX */
2798 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2803 append_port_stat(struct ofport
*port
, uint16_t port_no
, struct ofconn
*ofconn
,
2804 struct ofpbuf
**msgp
)
2806 struct netdev_stats stats
;
2807 struct ofp_port_stats
*ops
;
2809 /* Intentionally ignore return value, since errors will set
2810 * 'stats' to all-1s, which is correct for OpenFlow, and
2811 * netdev_get_stats() will log errors. */
2812 netdev_get_stats(port
->netdev
, &stats
);
2814 ops
= append_stats_reply(sizeof *ops
, ofconn
, msgp
);
2815 ops
->port_no
= htons(odp_port_to_ofp_port(port_no
));
2816 memset(ops
->pad
, 0, sizeof ops
->pad
);
2817 ops
->rx_packets
= htonll(stats
.rx_packets
);
2818 ops
->tx_packets
= htonll(stats
.tx_packets
);
2819 ops
->rx_bytes
= htonll(stats
.rx_bytes
);
2820 ops
->tx_bytes
= htonll(stats
.tx_bytes
);
2821 ops
->rx_dropped
= htonll(stats
.rx_dropped
);
2822 ops
->tx_dropped
= htonll(stats
.tx_dropped
);
2823 ops
->rx_errors
= htonll(stats
.rx_errors
);
2824 ops
->tx_errors
= htonll(stats
.tx_errors
);
2825 ops
->rx_frame_err
= htonll(stats
.rx_frame_errors
);
2826 ops
->rx_over_err
= htonll(stats
.rx_over_errors
);
2827 ops
->rx_crc_err
= htonll(stats
.rx_crc_errors
);
2828 ops
->collisions
= htonll(stats
.collisions
);
2832 handle_port_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2833 struct ofp_stats_request
*osr
,
2836 struct ofp_port_stats_request
*psr
;
2837 struct ofp_port_stats
*ops
;
2839 struct ofport
*port
;
2840 unsigned int port_no
;
2842 if (arg_size
!= sizeof *psr
) {
2843 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2845 psr
= (struct ofp_port_stats_request
*) osr
->body
;
2847 msg
= start_stats_reply(osr
, sizeof *ops
* 16);
2848 if (psr
->port_no
!= htons(OFPP_NONE
)) {
2849 port
= port_array_get(&p
->ports
,
2850 ofp_port_to_odp_port(ntohs(psr
->port_no
)));
2852 append_port_stat(port
, ntohs(psr
->port_no
), ofconn
, &msg
);
2855 PORT_ARRAY_FOR_EACH (port
, &p
->ports
, port_no
) {
2856 append_port_stat(port
, port_no
, ofconn
, &msg
);
2860 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
2864 struct flow_stats_cbdata
{
2865 struct ofproto
*ofproto
;
2866 struct ofconn
*ofconn
;
2871 /* Obtains statistic counters for 'rule' within 'p' and stores them into
2872 * '*packet_countp' and '*byte_countp'. If 'rule' is a wildcarded rule, the
2873 * returned statistic include statistics for all of 'rule''s subrules. */
2875 query_stats(struct ofproto
*p
, struct rule
*rule
,
2876 uint64_t *packet_countp
, uint64_t *byte_countp
)
2878 uint64_t packet_count
, byte_count
;
2879 struct rule
*subrule
;
2880 struct odp_flow
*odp_flows
;
2883 /* Start from historical data for 'rule' itself that are no longer tracked
2884 * by the datapath. This counts, for example, subrules that have
2886 packet_count
= rule
->packet_count
;
2887 byte_count
= rule
->byte_count
;
2889 /* Prepare to ask the datapath for statistics on 'rule', or if it is
2890 * wildcarded then on all of its subrules.
2892 * Also, add any statistics that are not tracked by the datapath for each
2893 * subrule. This includes, for example, statistics for packets that were
2894 * executed "by hand" by ofproto via dpif_execute() but must be accounted
2896 n_odp_flows
= rule
->cr
.wc
.wildcards
? list_size(&rule
->list
) : 1;
2897 odp_flows
= xzalloc(n_odp_flows
* sizeof *odp_flows
);
2898 if (rule
->cr
.wc
.wildcards
) {
2900 LIST_FOR_EACH (subrule
, struct rule
, list
, &rule
->list
) {
2901 odp_flows
[i
++].key
= subrule
->cr
.flow
;
2902 packet_count
+= subrule
->packet_count
;
2903 byte_count
+= subrule
->byte_count
;
2906 odp_flows
[0].key
= rule
->cr
.flow
;
2909 /* Fetch up-to-date statistics from the datapath and add them in. */
2910 if (!dpif_flow_get_multiple(p
->dpif
, odp_flows
, n_odp_flows
)) {
2912 for (i
= 0; i
< n_odp_flows
; i
++) {
2913 struct odp_flow
*odp_flow
= &odp_flows
[i
];
2914 packet_count
+= odp_flow
->stats
.n_packets
;
2915 byte_count
+= odp_flow
->stats
.n_bytes
;
2920 /* Return the stats to the caller. */
2921 *packet_countp
= packet_count
;
2922 *byte_countp
= byte_count
;
2926 flow_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
2928 struct rule
*rule
= rule_from_cls_rule(rule_
);
2929 struct flow_stats_cbdata
*cbdata
= cbdata_
;
2930 struct ofp_flow_stats
*ofs
;
2931 uint64_t packet_count
, byte_count
;
2932 size_t act_len
, len
;
2933 long long int tdiff
= time_msec() - rule
->created
;
2934 uint32_t sec
= tdiff
/ 1000;
2935 uint32_t msec
= tdiff
- (sec
* 1000);
2937 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
2941 act_len
= sizeof *rule
->actions
* rule
->n_actions
;
2942 len
= offsetof(struct ofp_flow_stats
, actions
) + act_len
;
2944 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
2946 ofs
= append_stats_reply(len
, cbdata
->ofconn
, &cbdata
->msg
);
2947 ofs
->length
= htons(len
);
2948 ofs
->table_id
= rule
->cr
.wc
.wildcards
? TABLEID_CLASSIFIER
: TABLEID_HASH
;
2950 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
2951 cbdata
->ofproto
->tun_id_from_cookie
, &ofs
->match
);
2952 ofs
->duration_sec
= htonl(sec
);
2953 ofs
->duration_nsec
= htonl(msec
* 1000000);
2954 ofs
->cookie
= rule
->flow_cookie
;
2955 ofs
->priority
= htons(rule
->cr
.priority
);
2956 ofs
->idle_timeout
= htons(rule
->idle_timeout
);
2957 ofs
->hard_timeout
= htons(rule
->hard_timeout
);
2958 memset(ofs
->pad2
, 0, sizeof ofs
->pad2
);
2959 ofs
->packet_count
= htonll(packet_count
);
2960 ofs
->byte_count
= htonll(byte_count
);
2961 memcpy(ofs
->actions
, rule
->actions
, act_len
);
2965 table_id_to_include(uint8_t table_id
)
2967 return (table_id
== TABLEID_HASH
? CLS_INC_EXACT
2968 : table_id
== TABLEID_CLASSIFIER
? CLS_INC_WILD
2969 : table_id
== 0xff ? CLS_INC_ALL
2974 handle_flow_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
2975 const struct ofp_stats_request
*osr
,
2978 struct ofp_flow_stats_request
*fsr
;
2979 struct flow_stats_cbdata cbdata
;
2980 struct cls_rule target
;
2982 if (arg_size
!= sizeof *fsr
) {
2983 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
2985 fsr
= (struct ofp_flow_stats_request
*) osr
->body
;
2987 COVERAGE_INC(ofproto_flows_req
);
2989 cbdata
.ofconn
= ofconn
;
2990 cbdata
.out_port
= fsr
->out_port
;
2991 cbdata
.msg
= start_stats_reply(osr
, 1024);
2992 cls_rule_from_match(&fsr
->match
, 0, false, 0, &target
);
2993 classifier_for_each_match(&p
->cls
, &target
,
2994 table_id_to_include(fsr
->table_id
),
2995 flow_stats_cb
, &cbdata
);
2996 queue_tx(cbdata
.msg
, ofconn
, ofconn
->reply_counter
);
3000 struct flow_stats_ds_cbdata
{
3001 struct ofproto
*ofproto
;
3006 flow_stats_ds_cb(struct cls_rule
*rule_
, void *cbdata_
)
3008 struct rule
*rule
= rule_from_cls_rule(rule_
);
3009 struct flow_stats_ds_cbdata
*cbdata
= cbdata_
;
3010 struct ds
*results
= cbdata
->results
;
3011 struct ofp_match match
;
3012 uint64_t packet_count
, byte_count
;
3013 size_t act_len
= sizeof *rule
->actions
* rule
->n_actions
;
3015 /* Don't report on subrules. */
3016 if (rule
->super
!= NULL
) {
3020 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3021 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
,
3022 cbdata
->ofproto
->tun_id_from_cookie
, &match
);
3024 ds_put_format(results
, "duration=%llds, ",
3025 (time_msec() - rule
->created
) / 1000);
3026 ds_put_format(results
, "priority=%u, ", rule
->cr
.priority
);
3027 ds_put_format(results
, "n_packets=%"PRIu64
", ", packet_count
);
3028 ds_put_format(results
, "n_bytes=%"PRIu64
", ", byte_count
);
3029 ofp_print_match(results
, &match
, true);
3030 ofp_print_actions(results
, &rule
->actions
->header
, act_len
);
3031 ds_put_cstr(results
, "\n");
3034 /* Adds a pretty-printed description of all flows to 'results', including
3035 * those marked hidden by secchan (e.g., by in-band control). */
3037 ofproto_get_all_flows(struct ofproto
*p
, struct ds
*results
)
3039 struct ofp_match match
;
3040 struct cls_rule target
;
3041 struct flow_stats_ds_cbdata cbdata
;
3043 memset(&match
, 0, sizeof match
);
3044 match
.wildcards
= htonl(OVSFW_ALL
);
3047 cbdata
.results
= results
;
3049 cls_rule_from_match(&match
, 0, false, 0, &target
);
3050 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3051 flow_stats_ds_cb
, &cbdata
);
3054 struct aggregate_stats_cbdata
{
3055 struct ofproto
*ofproto
;
3057 uint64_t packet_count
;
3058 uint64_t byte_count
;
3063 aggregate_stats_cb(struct cls_rule
*rule_
, void *cbdata_
)
3065 struct rule
*rule
= rule_from_cls_rule(rule_
);
3066 struct aggregate_stats_cbdata
*cbdata
= cbdata_
;
3067 uint64_t packet_count
, byte_count
;
3069 if (rule_is_hidden(rule
) || !rule_has_out_port(rule
, cbdata
->out_port
)) {
3073 query_stats(cbdata
->ofproto
, rule
, &packet_count
, &byte_count
);
3075 cbdata
->packet_count
+= packet_count
;
3076 cbdata
->byte_count
+= byte_count
;
3081 handle_aggregate_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3082 const struct ofp_stats_request
*osr
,
3085 struct ofp_aggregate_stats_request
*asr
;
3086 struct ofp_aggregate_stats_reply
*reply
;
3087 struct aggregate_stats_cbdata cbdata
;
3088 struct cls_rule target
;
3091 if (arg_size
!= sizeof *asr
) {
3092 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3094 asr
= (struct ofp_aggregate_stats_request
*) osr
->body
;
3096 COVERAGE_INC(ofproto_agg_request
);
3098 cbdata
.out_port
= asr
->out_port
;
3099 cbdata
.packet_count
= 0;
3100 cbdata
.byte_count
= 0;
3102 cls_rule_from_match(&asr
->match
, 0, false, 0, &target
);
3103 classifier_for_each_match(&p
->cls
, &target
,
3104 table_id_to_include(asr
->table_id
),
3105 aggregate_stats_cb
, &cbdata
);
3107 msg
= start_stats_reply(osr
, sizeof *reply
);
3108 reply
= append_stats_reply(sizeof *reply
, ofconn
, &msg
);
3109 reply
->flow_count
= htonl(cbdata
.n_flows
);
3110 reply
->packet_count
= htonll(cbdata
.packet_count
);
3111 reply
->byte_count
= htonll(cbdata
.byte_count
);
3112 queue_tx(msg
, ofconn
, ofconn
->reply_counter
);
3117 handle_stats_request(struct ofproto
*p
, struct ofconn
*ofconn
,
3118 struct ofp_header
*oh
)
3120 struct ofp_stats_request
*osr
;
3124 error
= check_ofp_message_array(oh
, OFPT_STATS_REQUEST
, sizeof *osr
,
3129 osr
= (struct ofp_stats_request
*) oh
;
3131 switch (ntohs(osr
->type
)) {
3133 return handle_desc_stats_request(p
, ofconn
, osr
);
3136 return handle_flow_stats_request(p
, ofconn
, osr
, arg_size
);
3138 case OFPST_AGGREGATE
:
3139 return handle_aggregate_stats_request(p
, ofconn
, osr
, arg_size
);
3142 return handle_table_stats_request(p
, ofconn
, osr
);
3145 return handle_port_stats_request(p
, ofconn
, osr
, arg_size
);
3148 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3151 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_STAT
);
3155 static long long int
3156 msec_from_nsec(uint64_t sec
, uint32_t nsec
)
3158 return !sec
? 0 : sec
* 1000 + nsec
/ 1000000;
3162 update_time(struct ofproto
*ofproto
, struct rule
*rule
,
3163 const struct odp_flow_stats
*stats
)
3165 long long int used
= msec_from_nsec(stats
->used_sec
, stats
->used_nsec
);
3166 if (used
> rule
->used
) {
3168 if (rule
->super
&& used
> rule
->super
->used
) {
3169 rule
->super
->used
= used
;
3171 netflow_flow_update_time(ofproto
->netflow
, &rule
->nf_flow
, used
);
3176 update_stats(struct ofproto
*ofproto
, struct rule
*rule
,
3177 const struct odp_flow_stats
*stats
)
3179 if (stats
->n_packets
) {
3180 update_time(ofproto
, rule
, stats
);
3181 rule
->packet_count
+= stats
->n_packets
;
3182 rule
->byte_count
+= stats
->n_bytes
;
3183 netflow_flow_update_flags(&rule
->nf_flow
, stats
->ip_tos
,
3188 /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
3189 * in which no matching flow already exists in the flow table.
3191 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
3192 * ofp_actions, to 'p''s flow table. Returns 0 on success or an OpenFlow error
3193 * code as encoded by ofp_mkerr() on failure.
3195 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3198 add_flow(struct ofproto
*p
, struct ofconn
*ofconn
,
3199 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3201 struct ofpbuf
*packet
;
3206 if (ofm
->flags
& htons(OFPFF_CHECK_OVERLAP
)) {
3210 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3212 if (classifier_rule_overlaps(&p
->cls
, &flow
, wildcards
,
3213 ntohs(ofm
->priority
))) {
3214 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_OVERLAP
);
3218 rule
= rule_create(p
, NULL
, (const union ofp_action
*) ofm
->actions
,
3219 n_actions
, ntohs(ofm
->idle_timeout
),
3220 ntohs(ofm
->hard_timeout
), ofm
->cookie
,
3221 ofm
->flags
& htons(OFPFF_SEND_FLOW_REM
));
3222 cls_rule_from_match(&ofm
->match
, ntohs(ofm
->priority
),
3223 p
->tun_id_from_cookie
, ofm
->cookie
, &rule
->cr
);
3226 if (ofm
->buffer_id
!= htonl(UINT32_MAX
)) {
3227 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3231 in_port
= UINT16_MAX
;
3234 rule_insert(p
, rule
, packet
, in_port
);
3235 ofpbuf_delete(packet
);
3239 static struct rule
*
3240 find_flow_strict(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3245 flow_from_match(&ofm
->match
, p
->tun_id_from_cookie
, ofm
->cookie
,
3247 return rule_from_cls_rule(classifier_find_rule_exactly(
3248 &p
->cls
, &flow
, wildcards
,
3249 ntohs(ofm
->priority
)));
3253 send_buffered_packet(struct ofproto
*ofproto
, struct ofconn
*ofconn
,
3254 struct rule
*rule
, const struct ofp_flow_mod
*ofm
)
3256 struct ofpbuf
*packet
;
3261 if (ofm
->buffer_id
== htonl(UINT32_MAX
)) {
3265 error
= pktbuf_retrieve(ofconn
->pktbuf
, ntohl(ofm
->buffer_id
),
3271 flow_extract(packet
, 0, in_port
, &flow
);
3272 rule_execute(ofproto
, rule
, packet
, &flow
);
3273 ofpbuf_delete(packet
);
3278 /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
3280 struct modify_flows_cbdata
{
3281 struct ofproto
*ofproto
;
3282 const struct ofp_flow_mod
*ofm
;
3287 static int modify_flow(struct ofproto
*, const struct ofp_flow_mod
*,
3288 size_t n_actions
, struct rule
*);
3289 static void modify_flows_cb(struct cls_rule
*, void *cbdata_
);
3291 /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as
3292 * encoded by ofp_mkerr() on failure.
3294 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3297 modify_flows_loose(struct ofproto
*p
, struct ofconn
*ofconn
,
3298 const struct ofp_flow_mod
*ofm
, size_t n_actions
)
3300 struct modify_flows_cbdata cbdata
;
3301 struct cls_rule target
;
3305 cbdata
.n_actions
= n_actions
;
3306 cbdata
.match
= NULL
;
3308 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3311 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3312 modify_flows_cb
, &cbdata
);
3314 /* This credits the packet to whichever flow happened to happened to
3315 * match last. That's weird. Maybe we should do a lookup for the
3316 * flow that actually matches the packet? Who knows. */
3317 send_buffered_packet(p
, ofconn
, cbdata
.match
, ofm
);
3320 return add_flow(p
, ofconn
, ofm
, n_actions
);
3324 /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
3325 * code as encoded by ofp_mkerr() on failure.
3327 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
3330 modify_flow_strict(struct ofproto
*p
, struct ofconn
*ofconn
,
3331 struct ofp_flow_mod
*ofm
, size_t n_actions
)
3333 struct rule
*rule
= find_flow_strict(p
, ofm
);
3334 if (rule
&& !rule_is_hidden(rule
)) {
3335 modify_flow(p
, ofm
, n_actions
, rule
);
3336 return send_buffered_packet(p
, ofconn
, rule
, ofm
);
3338 return add_flow(p
, ofconn
, ofm
, n_actions
);
3342 /* Callback for modify_flows_loose(). */
3344 modify_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3346 struct rule
*rule
= rule_from_cls_rule(rule_
);
3347 struct modify_flows_cbdata
*cbdata
= cbdata_
;
3349 if (!rule_is_hidden(rule
)) {
3350 cbdata
->match
= rule
;
3351 modify_flow(cbdata
->ofproto
, cbdata
->ofm
, cbdata
->n_actions
, rule
);
3355 /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has
3356 * been identified as a flow in 'p''s flow table to be modified, by changing
3357 * the rule's actions to match those in 'ofm' (which is followed by 'n_actions'
3358 * ofp_action[] structures). */
3360 modify_flow(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
,
3361 size_t n_actions
, struct rule
*rule
)
3363 size_t actions_len
= n_actions
* sizeof *rule
->actions
;
3365 rule
->flow_cookie
= ofm
->cookie
;
3367 /* If the actions are the same, do nothing. */
3368 if (n_actions
== rule
->n_actions
3369 && !memcmp(ofm
->actions
, rule
->actions
, actions_len
))
3374 /* Replace actions. */
3375 free(rule
->actions
);
3376 rule
->actions
= xmemdup(ofm
->actions
, actions_len
);
3377 rule
->n_actions
= n_actions
;
3379 /* Make sure that the datapath gets updated properly. */
3380 if (rule
->cr
.wc
.wildcards
) {
3381 COVERAGE_INC(ofproto_mod_wc_flow
);
3382 p
->need_revalidate
= true;
3384 rule_update_actions(p
, rule
);
3390 /* OFPFC_DELETE implementation. */
3392 struct delete_flows_cbdata
{
3393 struct ofproto
*ofproto
;
3397 static void delete_flows_cb(struct cls_rule
*, void *cbdata_
);
3398 static void delete_flow(struct ofproto
*, struct rule
*, uint16_t out_port
);
3400 /* Implements OFPFC_DELETE. */
3402 delete_flows_loose(struct ofproto
*p
, const struct ofp_flow_mod
*ofm
)
3404 struct delete_flows_cbdata cbdata
;
3405 struct cls_rule target
;
3408 cbdata
.out_port
= ofm
->out_port
;
3410 cls_rule_from_match(&ofm
->match
, 0, p
->tun_id_from_cookie
, ofm
->cookie
,
3413 classifier_for_each_match(&p
->cls
, &target
, CLS_INC_ALL
,
3414 delete_flows_cb
, &cbdata
);
3417 /* Implements OFPFC_DELETE_STRICT. */
3419 delete_flow_strict(struct ofproto
*p
, struct ofp_flow_mod
*ofm
)
3421 struct rule
*rule
= find_flow_strict(p
, ofm
);
3423 delete_flow(p
, rule
, ofm
->out_port
);
3427 /* Callback for delete_flows_loose(). */
3429 delete_flows_cb(struct cls_rule
*rule_
, void *cbdata_
)
3431 struct rule
*rule
= rule_from_cls_rule(rule_
);
3432 struct delete_flows_cbdata
*cbdata
= cbdata_
;
3434 delete_flow(cbdata
->ofproto
, rule
, cbdata
->out_port
);
3437 /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has
3438 * been identified as a flow to delete from 'p''s flow table, by deleting the
3439 * flow and sending out a OFPT_FLOW_REMOVED message to any interested
3442 * Will not delete 'rule' if it is hidden. Will delete 'rule' only if
3443 * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the
3444 * specified 'out_port'. */
3446 delete_flow(struct ofproto
*p
, struct rule
*rule
, uint16_t out_port
)
3448 if (rule_is_hidden(rule
)) {
3452 if (out_port
!= htons(OFPP_NONE
) && !rule_has_out_port(rule
, out_port
)) {
3456 send_flow_removed(p
, rule
, time_msec(), OFPRR_DELETE
);
3457 rule_remove(p
, rule
);
3461 handle_flow_mod(struct ofproto
*p
, struct ofconn
*ofconn
,
3462 struct ofp_flow_mod
*ofm
)
3467 error
= reject_slave_controller(ofconn
, &ofm
->header
);
3471 error
= check_ofp_message_array(&ofm
->header
, OFPT_FLOW_MOD
, sizeof *ofm
,
3472 sizeof *ofm
->actions
, &n_actions
);
3477 /* We do not support the emergency flow cache. It will hopefully
3478 * get dropped from OpenFlow in the near future. */
3479 if (ofm
->flags
& htons(OFPFF_EMERG
)) {
3480 /* There isn't a good fit for an error code, so just state that the
3481 * flow table is full. */
3482 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_ALL_TABLES_FULL
);
3485 normalize_match(&ofm
->match
);
3486 if (!ofm
->match
.wildcards
) {
3487 ofm
->priority
= htons(UINT16_MAX
);
3490 error
= validate_actions((const union ofp_action
*) ofm
->actions
,
3491 n_actions
, p
->max_ports
);
3496 switch (ntohs(ofm
->command
)) {
3498 return add_flow(p
, ofconn
, ofm
, n_actions
);
3501 return modify_flows_loose(p
, ofconn
, ofm
, n_actions
);
3503 case OFPFC_MODIFY_STRICT
:
3504 return modify_flow_strict(p
, ofconn
, ofm
, n_actions
);
3507 delete_flows_loose(p
, ofm
);
3510 case OFPFC_DELETE_STRICT
:
3511 delete_flow_strict(p
, ofm
);
3515 return ofp_mkerr(OFPET_FLOW_MOD_FAILED
, OFPFMFC_BAD_COMMAND
);
3520 handle_tun_id_from_cookie(struct ofproto
*p
, struct nxt_tun_id_cookie
*msg
)
3524 error
= check_ofp_message(&msg
->header
, OFPT_VENDOR
, sizeof *msg
);
3529 p
->tun_id_from_cookie
= !!msg
->set
;
3534 handle_role_request(struct ofproto
*ofproto
,
3535 struct ofconn
*ofconn
, struct nicira_header
*msg
)
3537 struct nx_role_request
*nrr
;
3538 struct nx_role_request
*reply
;
3542 if (ntohs(msg
->header
.length
) != sizeof *nrr
) {
3543 VLOG_WARN_RL(&rl
, "received role request of length %zu (expected %zu)",
3544 ntohs(msg
->header
.length
), sizeof *nrr
);
3545 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3547 nrr
= (struct nx_role_request
*) msg
;
3549 if (ofconn
->type
!= OFCONN_CONTROLLER
) {
3550 VLOG_WARN_RL(&rl
, "ignoring role request on non-controller "
3552 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_EPERM
);
3555 role
= ntohl(nrr
->role
);
3556 if (role
!= NX_ROLE_OTHER
&& role
!= NX_ROLE_MASTER
3557 && role
!= NX_ROLE_SLAVE
) {
3558 VLOG_WARN_RL(&rl
, "received request for unknown role %"PRIu32
, role
);
3560 /* There's no good error code for this. */
3561 return ofp_mkerr(OFPET_BAD_REQUEST
, -1);
3564 if (role
== NX_ROLE_MASTER
) {
3565 struct ofconn
*other
;
3567 HMAP_FOR_EACH (other
, struct ofconn
, hmap_node
,
3568 &ofproto
->controllers
) {
3569 if (other
->role
== NX_ROLE_MASTER
) {
3570 other
->role
= NX_ROLE_SLAVE
;
3574 ofconn
->role
= role
;
3576 reply
= make_openflow_xid(sizeof *reply
, OFPT_VENDOR
, msg
->header
.xid
,
3578 reply
->nxh
.vendor
= htonl(NX_VENDOR_ID
);
3579 reply
->nxh
.subtype
= htonl(NXT_ROLE_REPLY
);
3580 reply
->role
= htonl(role
);
3581 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3587 handle_vendor(struct ofproto
*p
, struct ofconn
*ofconn
, void *msg
)
3589 struct ofp_vendor_header
*ovh
= msg
;
3590 struct nicira_header
*nh
;
3592 if (ntohs(ovh
->header
.length
) < sizeof(struct ofp_vendor_header
)) {
3593 VLOG_WARN_RL(&rl
, "received vendor message of length %zu "
3594 "(expected at least %zu)",
3595 ntohs(ovh
->header
.length
), sizeof(struct ofp_vendor_header
));
3596 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3598 if (ovh
->vendor
!= htonl(NX_VENDOR_ID
)) {
3599 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_VENDOR
);
3601 if (ntohs(ovh
->header
.length
) < sizeof(struct nicira_header
)) {
3602 VLOG_WARN_RL(&rl
, "received Nicira vendor message of length %zu "
3603 "(expected at least %zu)",
3604 ntohs(ovh
->header
.length
), sizeof(struct nicira_header
));
3605 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
3609 switch (ntohl(nh
->subtype
)) {
3610 case NXT_STATUS_REQUEST
:
3611 return switch_status_handle_request(p
->switch_status
, ofconn
->rconn
,
3614 case NXT_TUN_ID_FROM_COOKIE
:
3615 return handle_tun_id_from_cookie(p
, msg
);
3617 case NXT_ROLE_REQUEST
:
3618 return handle_role_request(p
, ofconn
, msg
);
3621 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_SUBTYPE
);
3625 handle_barrier_request(struct ofconn
*ofconn
, struct ofp_header
*oh
)
3627 struct ofp_header
*ob
;
3630 /* Currently, everything executes synchronously, so we can just
3631 * immediately send the barrier reply. */
3632 ob
= make_openflow_xid(sizeof *ob
, OFPT_BARRIER_REPLY
, oh
->xid
, &buf
);
3633 queue_tx(buf
, ofconn
, ofconn
->reply_counter
);
3638 handle_openflow(struct ofconn
*ofconn
, struct ofproto
*p
,
3639 struct ofpbuf
*ofp_msg
)
3641 struct ofp_header
*oh
= ofp_msg
->data
;
3644 COVERAGE_INC(ofproto_recv_openflow
);
3646 case OFPT_ECHO_REQUEST
:
3647 error
= handle_echo_request(ofconn
, oh
);
3650 case OFPT_ECHO_REPLY
:
3654 case OFPT_FEATURES_REQUEST
:
3655 error
= handle_features_request(p
, ofconn
, oh
);
3658 case OFPT_GET_CONFIG_REQUEST
:
3659 error
= handle_get_config_request(p
, ofconn
, oh
);
3662 case OFPT_SET_CONFIG
:
3663 error
= handle_set_config(p
, ofconn
, ofp_msg
->data
);
3666 case OFPT_PACKET_OUT
:
3667 error
= handle_packet_out(p
, ofconn
, ofp_msg
->data
);
3671 error
= handle_port_mod(p
, ofconn
, oh
);
3675 error
= handle_flow_mod(p
, ofconn
, ofp_msg
->data
);
3678 case OFPT_STATS_REQUEST
:
3679 error
= handle_stats_request(p
, ofconn
, oh
);
3683 error
= handle_vendor(p
, ofconn
, ofp_msg
->data
);
3686 case OFPT_BARRIER_REQUEST
:
3687 error
= handle_barrier_request(ofconn
, oh
);
3691 if (VLOG_IS_WARN_ENABLED()) {
3692 char *s
= ofp_to_string(oh
, ntohs(oh
->length
), 2);
3693 VLOG_DBG_RL(&rl
, "OpenFlow message ignored: %s", s
);
3696 error
= ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_TYPE
);
3701 send_error_oh(ofconn
, ofp_msg
->data
, error
);
3706 handle_odp_miss_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3708 struct odp_msg
*msg
= packet
->data
;
3710 struct ofpbuf payload
;
3713 payload
.data
= msg
+ 1;
3714 payload
.size
= msg
->length
- sizeof *msg
;
3715 flow_extract(&payload
, msg
->arg
, msg
->port
, &flow
);
3717 /* Check with in-band control to see if this packet should be sent
3718 * to the local port regardless of the flow table. */
3719 if (in_band_msg_in_hook(p
->in_band
, &flow
, &payload
)) {
3720 union odp_action action
;
3722 memset(&action
, 0, sizeof(action
));
3723 action
.output
.type
= ODPAT_OUTPUT
;
3724 action
.output
.port
= ODPP_LOCAL
;
3725 dpif_execute(p
->dpif
, flow
.in_port
, &action
, 1, &payload
);
3728 rule
= lookup_valid_rule(p
, &flow
);
3730 /* Don't send a packet-in if OFPPC_NO_PACKET_IN asserted. */
3731 struct ofport
*port
= port_array_get(&p
->ports
, msg
->port
);
3733 if (port
->opp
.config
& OFPPC_NO_PACKET_IN
) {
3734 COVERAGE_INC(ofproto_no_packet_in
);
3735 /* XXX install 'drop' flow entry */
3736 ofpbuf_delete(packet
);
3740 VLOG_WARN_RL(&rl
, "packet-in on unknown port %"PRIu16
, msg
->port
);
3743 COVERAGE_INC(ofproto_packet_in
);
3744 send_packet_in(p
, packet
);
3748 if (rule
->cr
.wc
.wildcards
) {
3749 rule
= rule_create_subrule(p
, rule
, &flow
);
3750 rule_make_actions(p
, rule
, packet
);
3752 if (!rule
->may_install
) {
3753 /* The rule is not installable, that is, we need to process every
3754 * packet, so process the current packet and set its actions into
3756 rule_make_actions(p
, rule
, packet
);
3758 /* XXX revalidate rule if it needs it */
3762 rule_execute(p
, rule
, &payload
, &flow
);
3763 rule_reinstall(p
, rule
);
3765 if (rule
->super
&& rule
->super
->cr
.priority
== FAIL_OPEN_PRIORITY
) {
3767 * Extra-special case for fail-open mode.
3769 * We are in fail-open mode and the packet matched the fail-open rule,
3770 * but we are connected to a controller too. We should send the packet
3771 * up to the controller in the hope that it will try to set up a flow
3772 * and thereby allow us to exit fail-open.
3774 * See the top-level comment in fail-open.c for more information.
3776 send_packet_in(p
, packet
);
3778 ofpbuf_delete(packet
);
3783 handle_odp_msg(struct ofproto
*p
, struct ofpbuf
*packet
)
3785 struct odp_msg
*msg
= packet
->data
;
3787 switch (msg
->type
) {
3788 case _ODPL_ACTION_NR
:
3789 COVERAGE_INC(ofproto_ctlr_action
);
3790 send_packet_in(p
, packet
);
3793 case _ODPL_SFLOW_NR
:
3795 ofproto_sflow_received(p
->sflow
, msg
);
3797 ofpbuf_delete(packet
);
3801 handle_odp_miss_msg(p
, packet
);
3805 VLOG_WARN_RL(&rl
, "received ODP message of unexpected type %"PRIu32
,
3812 revalidate_cb(struct cls_rule
*sub_
, void *cbdata_
)
3814 struct rule
*sub
= rule_from_cls_rule(sub_
);
3815 struct revalidate_cbdata
*cbdata
= cbdata_
;
3817 if (cbdata
->revalidate_all
3818 || (cbdata
->revalidate_subrules
&& sub
->super
)
3819 || (tag_set_intersects(&cbdata
->revalidate_set
, sub
->tags
))) {
3820 revalidate_rule(cbdata
->ofproto
, sub
);
3825 revalidate_rule(struct ofproto
*p
, struct rule
*rule
)
3827 const flow_t
*flow
= &rule
->cr
.flow
;
3829 COVERAGE_INC(ofproto_revalidate_rule
);
3832 super
= rule_from_cls_rule(classifier_lookup_wild(&p
->cls
, flow
));
3834 rule_remove(p
, rule
);
3836 } else if (super
!= rule
->super
) {
3837 COVERAGE_INC(ofproto_revalidate_moved
);
3838 list_remove(&rule
->list
);
3839 list_push_back(&super
->list
, &rule
->list
);
3840 rule
->super
= super
;
3841 rule
->hard_timeout
= super
->hard_timeout
;
3842 rule
->idle_timeout
= super
->idle_timeout
;
3843 rule
->created
= super
->created
;
3848 rule_update_actions(p
, rule
);
3852 static struct ofpbuf
*
3853 compose_flow_removed(struct ofproto
*p
, const struct rule
*rule
,
3854 long long int now
, uint8_t reason
)
3856 struct ofp_flow_removed
*ofr
;
3858 long long int tdiff
= now
- rule
->created
;
3859 uint32_t sec
= tdiff
/ 1000;
3860 uint32_t msec
= tdiff
- (sec
* 1000);
3862 ofr
= make_openflow(sizeof *ofr
, OFPT_FLOW_REMOVED
, &buf
);
3863 flow_to_match(&rule
->cr
.flow
, rule
->cr
.wc
.wildcards
, p
->tun_id_from_cookie
,
3865 ofr
->cookie
= rule
->flow_cookie
;
3866 ofr
->priority
= htons(rule
->cr
.priority
);
3867 ofr
->reason
= reason
;
3868 ofr
->duration_sec
= htonl(sec
);
3869 ofr
->duration_nsec
= htonl(msec
* 1000000);
3870 ofr
->idle_timeout
= htons(rule
->idle_timeout
);
3871 ofr
->packet_count
= htonll(rule
->packet_count
);
3872 ofr
->byte_count
= htonll(rule
->byte_count
);
3878 uninstall_idle_flow(struct ofproto
*ofproto
, struct rule
*rule
)
3880 assert(rule
->installed
);
3881 assert(!rule
->cr
.wc
.wildcards
);
3884 rule_remove(ofproto
, rule
);
3886 rule_uninstall(ofproto
, rule
);
3891 send_flow_removed(struct ofproto
*p
, struct rule
*rule
,
3892 long long int now
, uint8_t reason
)
3894 struct ofconn
*ofconn
;
3895 struct ofconn
*prev
;
3896 struct ofpbuf
*buf
= NULL
;
3898 /* We limit the maximum number of queued flow expirations it by accounting
3899 * them under the counter for replies. That works because preventing
3900 * OpenFlow requests from being processed also prevents new flows from
3901 * being added (and expiring). (It also prevents processing OpenFlow
3902 * requests that would not add new flows, so it is imperfect.) */
3905 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &p
->all_conns
) {
3906 if (rule
->send_flow_removed
&& rconn_is_connected(ofconn
->rconn
)
3907 && ofconn_receives_async_msgs(ofconn
)) {
3909 queue_tx(ofpbuf_clone(buf
), prev
, prev
->reply_counter
);
3911 buf
= compose_flow_removed(p
, rule
, now
, reason
);
3917 queue_tx(buf
, prev
, prev
->reply_counter
);
3923 expire_rule(struct cls_rule
*cls_rule
, void *p_
)
3925 struct ofproto
*p
= p_
;
3926 struct rule
*rule
= rule_from_cls_rule(cls_rule
);
3927 long long int hard_expire
, idle_expire
, expire
, now
;
3929 hard_expire
= (rule
->hard_timeout
3930 ? rule
->created
+ rule
->hard_timeout
* 1000
3932 idle_expire
= (rule
->idle_timeout
3933 && (rule
->super
|| list_is_empty(&rule
->list
))
3934 ? rule
->used
+ rule
->idle_timeout
* 1000
3936 expire
= MIN(hard_expire
, idle_expire
);
3940 if (rule
->installed
&& now
>= rule
->used
+ 5000) {
3941 uninstall_idle_flow(p
, rule
);
3942 } else if (!rule
->cr
.wc
.wildcards
) {
3943 active_timeout(p
, rule
);
3949 COVERAGE_INC(ofproto_expired
);
3951 /* Update stats. This code will be a no-op if the rule expired
3952 * due to an idle timeout. */
3953 if (rule
->cr
.wc
.wildcards
) {
3954 struct rule
*subrule
, *next
;
3955 LIST_FOR_EACH_SAFE (subrule
, next
, struct rule
, list
, &rule
->list
) {
3956 rule_remove(p
, subrule
);
3959 rule_uninstall(p
, rule
);
3962 if (!rule_is_hidden(rule
)) {
3963 send_flow_removed(p
, rule
, now
,
3965 ? OFPRR_HARD_TIMEOUT
: OFPRR_IDLE_TIMEOUT
));
3967 rule_remove(p
, rule
);
3971 active_timeout(struct ofproto
*ofproto
, struct rule
*rule
)
3973 if (ofproto
->netflow
&& !is_controller_rule(rule
) &&
3974 netflow_active_timeout_expired(ofproto
->netflow
, &rule
->nf_flow
)) {
3975 struct ofexpired expired
;
3976 struct odp_flow odp_flow
;
3978 /* Get updated flow stats. */
3979 memset(&odp_flow
, 0, sizeof odp_flow
);
3980 if (rule
->installed
) {
3981 odp_flow
.key
= rule
->cr
.flow
;
3982 odp_flow
.flags
= ODPFF_ZERO_TCP_FLAGS
;
3983 dpif_flow_get(ofproto
->dpif
, &odp_flow
);
3985 if (odp_flow
.stats
.n_packets
) {
3986 update_time(ofproto
, rule
, &odp_flow
.stats
);
3987 netflow_flow_update_flags(&rule
->nf_flow
, odp_flow
.stats
.ip_tos
,
3988 odp_flow
.stats
.tcp_flags
);
3992 expired
.flow
= rule
->cr
.flow
;
3993 expired
.packet_count
= rule
->packet_count
+
3994 odp_flow
.stats
.n_packets
;
3995 expired
.byte_count
= rule
->byte_count
+ odp_flow
.stats
.n_bytes
;
3996 expired
.used
= rule
->used
;
3998 netflow_expire(ofproto
->netflow
, &rule
->nf_flow
, &expired
);
4000 /* Schedule us to send the accumulated records once we have
4001 * collected all of them. */
4002 poll_immediate_wake();
4007 update_used(struct ofproto
*p
)
4009 struct odp_flow
*flows
;
4014 error
= dpif_flow_list_all(p
->dpif
, &flows
, &n_flows
);
4019 for (i
= 0; i
< n_flows
; i
++) {
4020 struct odp_flow
*f
= &flows
[i
];
4023 rule
= rule_from_cls_rule(
4024 classifier_find_rule_exactly(&p
->cls
, &f
->key
, 0, UINT16_MAX
));
4025 if (!rule
|| !rule
->installed
) {
4026 COVERAGE_INC(ofproto_unexpected_rule
);
4027 dpif_flow_del(p
->dpif
, f
);
4031 update_time(p
, rule
, &f
->stats
);
4032 rule_account(p
, rule
, f
->stats
.n_bytes
);
4037 /* pinsched callback for sending 'packet' on 'ofconn'. */
4039 do_send_packet_in(struct ofpbuf
*packet
, void *ofconn_
)
4041 struct ofconn
*ofconn
= ofconn_
;
4043 rconn_send_with_limit(ofconn
->rconn
, packet
,
4044 ofconn
->packet_in_counter
, 100);
4047 /* Takes 'packet', which has been converted with do_convert_to_packet_in(), and
4048 * finalizes its content for sending on 'ofconn', and passes it to 'ofconn''s
4049 * packet scheduler for sending.
4051 * 'max_len' specifies the maximum number of bytes of the packet to send on
4052 * 'ofconn' (INT_MAX specifies no limit).
4054 * If 'clone' is true, the caller retains ownership of 'packet'. Otherwise,
4055 * ownership is transferred to this function. */
4057 schedule_packet_in(struct ofconn
*ofconn
, struct ofpbuf
*packet
, int max_len
,
4060 struct ofproto
*ofproto
= ofconn
->ofproto
;
4061 struct ofp_packet_in
*opi
= packet
->data
;
4062 uint16_t in_port
= ofp_port_to_odp_port(ntohs(opi
->in_port
));
4063 int send_len
, trim_size
;
4067 if (opi
->reason
== OFPR_ACTION
) {
4068 buffer_id
= UINT32_MAX
;
4069 } else if (ofproto
->fail_open
&& fail_open_is_active(ofproto
->fail_open
)) {
4070 buffer_id
= pktbuf_get_null();
4071 } else if (!ofconn
->pktbuf
) {
4072 buffer_id
= UINT32_MAX
;
4074 struct ofpbuf payload
;
4075 payload
.data
= opi
->data
;
4076 payload
.size
= packet
->size
- offsetof(struct ofp_packet_in
, data
);
4077 buffer_id
= pktbuf_save(ofconn
->pktbuf
, &payload
, in_port
);
4080 /* Figure out how much of the packet to send. */
4081 send_len
= ntohs(opi
->total_len
);
4082 if (buffer_id
!= UINT32_MAX
) {
4083 send_len
= MIN(send_len
, ofconn
->miss_send_len
);
4085 send_len
= MIN(send_len
, max_len
);
4087 /* Adjust packet length and clone if necessary. */
4088 trim_size
= offsetof(struct ofp_packet_in
, data
) + send_len
;
4090 packet
= ofpbuf_clone_data(packet
->data
, trim_size
);
4093 packet
->size
= trim_size
;
4096 /* Update packet headers. */
4097 opi
->buffer_id
= htonl(buffer_id
);
4098 update_openflow_length(packet
);
4100 /* Hand over to packet scheduler. It might immediately call into
4101 * do_send_packet_in() or it might buffer it for a while (until a later
4102 * call to pinsched_run()). */
4103 pinsched_send(ofconn
->schedulers
[opi
->reason
], in_port
,
4104 packet
, do_send_packet_in
, ofconn
);
4107 /* Replace struct odp_msg header in 'packet' by equivalent struct
4108 * ofp_packet_in. The odp_msg must have sufficient headroom to do so (e.g. as
4109 * returned by dpif_recv()).
4111 * The conversion is not complete: the caller still needs to trim any unneeded
4112 * payload off the end of the buffer, set the length in the OpenFlow header,
4113 * and set buffer_id. Those require us to know the controller settings and so
4114 * must be done on a per-controller basis.
4116 * Returns the maximum number of bytes of the packet that should be sent to
4117 * the controller (INT_MAX if no limit). */
4119 do_convert_to_packet_in(struct ofpbuf
*packet
)
4121 struct odp_msg
*msg
= packet
->data
;
4122 struct ofp_packet_in
*opi
;
4128 /* Extract relevant header fields */
4129 if (msg
->type
== _ODPL_ACTION_NR
) {
4130 reason
= OFPR_ACTION
;
4133 reason
= OFPR_NO_MATCH
;
4136 total_len
= msg
->length
- sizeof *msg
;
4137 in_port
= odp_port_to_ofp_port(msg
->port
);
4139 /* Repurpose packet buffer by overwriting header. */
4140 ofpbuf_pull(packet
, sizeof(struct odp_msg
));
4141 opi
= ofpbuf_push_zeros(packet
, offsetof(struct ofp_packet_in
, data
));
4142 opi
->header
.version
= OFP_VERSION
;
4143 opi
->header
.type
= OFPT_PACKET_IN
;
4144 opi
->total_len
= htons(total_len
);
4145 opi
->in_port
= htons(in_port
);
4146 opi
->reason
= reason
;
4151 /* Given 'packet' containing an odp_msg of type _ODPL_ACTION_NR or
4152 * _ODPL_MISS_NR, sends an OFPT_PACKET_IN message to each OpenFlow controller
4153 * as necessary according to their individual configurations.
4155 * 'packet' must have sufficient headroom to convert it into a struct
4156 * ofp_packet_in (e.g. as returned by dpif_recv()).
4158 * Takes ownership of 'packet'. */
4160 send_packet_in(struct ofproto
*ofproto
, struct ofpbuf
*packet
)
4162 struct ofconn
*ofconn
, *prev
;
4165 max_len
= do_convert_to_packet_in(packet
);
4168 LIST_FOR_EACH (ofconn
, struct ofconn
, node
, &ofproto
->all_conns
) {
4169 if (ofconn_receives_async_msgs(ofconn
)) {
4171 schedule_packet_in(prev
, packet
, max_len
, true);
4177 schedule_packet_in(prev
, packet
, max_len
, false);
4179 ofpbuf_delete(packet
);
4184 pick_datapath_id(const struct ofproto
*ofproto
)
4186 const struct ofport
*port
;
4188 port
= port_array_get(&ofproto
->ports
, ODPP_LOCAL
);
4190 uint8_t ea
[ETH_ADDR_LEN
];
4193 error
= netdev_get_etheraddr(port
->netdev
, ea
);
4195 return eth_addr_to_uint64(ea
);
4197 VLOG_WARN("could not get MAC address for %s (%s)",
4198 netdev_get_name(port
->netdev
), strerror(error
));
4200 return ofproto
->fallback_dpid
;
4204 pick_fallback_dpid(void)
4206 uint8_t ea
[ETH_ADDR_LEN
];
4207 eth_addr_nicira_random(ea
);
4208 return eth_addr_to_uint64(ea
);
4212 default_normal_ofhook_cb(const flow_t
*flow
, const struct ofpbuf
*packet
,
4213 struct odp_actions
*actions
, tag_type
*tags
,
4214 uint16_t *nf_output_iface
, void *ofproto_
)
4216 struct ofproto
*ofproto
= ofproto_
;
4219 /* Drop frames for reserved multicast addresses. */
4220 if (eth_addr_is_reserved(flow
->dl_dst
)) {
4224 /* Learn source MAC (but don't try to learn from revalidation). */
4225 if (packet
!= NULL
) {
4226 tag_type rev_tag
= mac_learning_learn(ofproto
->ml
, flow
->dl_src
,
4229 /* The log messages here could actually be useful in debugging,
4230 * so keep the rate limit relatively high. */
4231 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
4232 VLOG_DBG_RL(&rl
, "learned that "ETH_ADDR_FMT
" is on port %"PRIu16
,
4233 ETH_ADDR_ARGS(flow
->dl_src
), flow
->in_port
);
4234 ofproto_revalidate(ofproto
, rev_tag
);
4238 /* Determine output port. */
4239 out_port
= mac_learning_lookup_tag(ofproto
->ml
, flow
->dl_dst
, 0, tags
);
4241 add_output_group_action(actions
, DP_GROUP_FLOOD
, nf_output_iface
);
4242 } else if (out_port
!= flow
->in_port
) {
4243 odp_actions_add(actions
, ODPAT_OUTPUT
)->output
.port
= out_port
;
4244 *nf_output_iface
= out_port
;
4252 static const struct ofhooks default_ofhooks
= {
4254 default_normal_ofhook_cb
,