1 /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License. */
17 #include "ofproto/ofproto-dpif-xlate.h"
25 #include "byte-order.h"
30 #include "dynamic-string.h"
35 #include "mac-learning.h"
36 #include "meta-flow.h"
37 #include "multipath.h"
38 #include "netdev-vport.h"
41 #include "odp-execute.h"
42 #include "ofp-actions.h"
43 #include "ofproto/ofproto-dpif-ipfix.h"
44 #include "ofproto/ofproto-dpif-mirror.h"
45 #include "ofproto/ofproto-dpif-monitor.h"
46 #include "ofproto/ofproto-dpif-sflow.h"
47 #include "ofproto/ofproto-dpif.h"
48 #include "ofproto/ofproto-provider.h"
52 COVERAGE_DEFINE(xlate_actions
);
53 COVERAGE_DEFINE(xlate_actions_oversize
);
54 COVERAGE_DEFINE(xlate_actions_mpls_overflow
);
56 VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate
);
58 /* Maximum depth of flow table recursion (due to resubmit actions) in a
59 * flow translation. */
60 #define MAX_RESUBMIT_RECURSION 64
61 #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in
64 /* Maximum number of resubmit actions in a flow translation, whether they are
65 * recursive or not. */
66 #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION)
69 struct hmap_node hmap_node
; /* Node in global 'xbridges' map. */
70 struct ofproto_dpif
*ofproto
; /* Key in global 'xbridges' map. */
72 struct list xbundles
; /* Owned xbundles. */
73 struct hmap xports
; /* Indexed by ofp_port. */
75 char *name
; /* Name used in log messages. */
76 struct dpif
*dpif
; /* Datapath interface. */
77 struct mac_learning
*ml
; /* Mac learning handle. */
78 struct mbridge
*mbridge
; /* Mirroring. */
79 struct dpif_sflow
*sflow
; /* SFlow handle, or null. */
80 struct dpif_ipfix
*ipfix
; /* Ipfix handle, or null. */
81 struct netflow
*netflow
; /* Netflow handle, or null. */
82 struct stp
*stp
; /* STP or null if disabled. */
84 /* Special rules installed by ofproto-dpif. */
85 struct rule_dpif
*miss_rule
;
86 struct rule_dpif
*no_packet_in_rule
;
88 enum ofp_config_flags frag
; /* Fragmentation handling. */
89 bool has_in_band
; /* Bridge has in band control? */
90 bool forward_bpdu
; /* Bridge forwards STP BPDUs? */
92 /* True if the datapath supports recirculation. */
95 /* True if the datapath supports variable-length
96 * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
97 * False if the datapath supports only 8-byte (or shorter) userdata. */
98 bool variable_length_userdata
;
100 /* Number of MPLS label stack entries that the datapath supports
102 size_t max_mpls_depth
;
106 struct hmap_node hmap_node
; /* In global 'xbundles' map. */
107 struct ofbundle
*ofbundle
; /* Key in global 'xbundles' map. */
109 struct list list_node
; /* In parent 'xbridges' list. */
110 struct xbridge
*xbridge
; /* Parent xbridge. */
112 struct list xports
; /* Contains "struct xport"s. */
114 char *name
; /* Name used in log messages. */
115 struct bond
*bond
; /* Nonnull iff more than one port. */
116 struct lacp
*lacp
; /* LACP handle or null. */
118 enum port_vlan_mode vlan_mode
; /* VLAN mode. */
119 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
120 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
121 * NULL if all VLANs are trunked. */
122 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
123 bool floodable
; /* No port has OFPUTIL_PC_NO_FLOOD set? */
127 struct hmap_node hmap_node
; /* Node in global 'xports' map. */
128 struct ofport_dpif
*ofport
; /* Key in global 'xports map. */
130 struct hmap_node ofp_node
; /* Node in parent xbridge 'xports' map. */
131 ofp_port_t ofp_port
; /* Key in parent xbridge 'xports' map. */
133 odp_port_t odp_port
; /* Datapath port number or ODPP_NONE. */
135 struct list bundle_node
; /* In parent xbundle (if it exists). */
136 struct xbundle
*xbundle
; /* Parent xbundle or null. */
138 struct netdev
*netdev
; /* 'ofport''s netdev. */
140 struct xbridge
*xbridge
; /* Parent bridge. */
141 struct xport
*peer
; /* Patch port peer or null. */
143 enum ofputil_port_config config
; /* OpenFlow port configuration. */
144 enum ofputil_port_state state
; /* OpenFlow port state. */
145 int stp_port_no
; /* STP port number or -1 if not in use. */
147 struct hmap skb_priorities
; /* Map of 'skb_priority_to_dscp's. */
149 bool may_enable
; /* May be enabled in bonds. */
150 bool is_tunnel
; /* Is a tunnel port. */
152 struct cfm
*cfm
; /* CFM handle or null. */
153 struct bfd
*bfd
; /* BFD handle or null. */
157 struct xlate_in
*xin
;
158 struct xlate_out
*xout
;
160 const struct xbridge
*xbridge
;
162 /* Flow at the last commit. */
163 struct flow base_flow
;
165 /* Tunnel IP destination address as received. This is stored separately
166 * as the base_flow.tunnel is cleared on init to reflect the datapath
167 * behavior. Used to make sure not to send tunneled output to ourselves,
168 * which might lead to an infinite loop. This could happen easily
169 * if a tunnel is marked as 'ip_remote=flow', and the flow does not
170 * actually set the tun_dst field. */
171 ovs_be32 orig_tunnel_ip_dst
;
173 /* Stack for the push and pop actions. Each stack element is of type
174 * "union mf_subvalue". */
175 union mf_subvalue init_stack
[1024 / sizeof(union mf_subvalue
)];
178 /* The rule that we are currently translating, or NULL. */
179 struct rule_dpif
*rule
;
181 /* Resubmit statistics, via xlate_table_action(). */
182 int recurse
; /* Current resubmit nesting depth. */
183 int resubmits
; /* Total number of resubmits. */
184 bool in_group
; /* Currently translating ofgroup, if true. */
186 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
187 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
188 uint32_t sflow_n_outputs
; /* Number of output ports. */
189 odp_port_t sflow_odp_port
; /* Output port for composing sFlow action. */
190 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
191 bool exit
; /* No further actions should be processed. */
193 bool use_recirc
; /* Should generate recirc? */
194 struct xlate_recirc recirc
; /* Information used for generating
195 * recirculation actions */
197 /* OpenFlow 1.1+ action set.
199 * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS.
200 * When translation is otherwise complete, ofpacts_execute_action_set()
201 * converts it to a set of "struct ofpact"s that can be translated into
202 * datapath actions. */
203 struct ofpbuf action_set
; /* Action set. */
204 uint64_t action_set_stub
[1024 / 8];
207 /* A controller may use OFPP_NONE as the ingress port to indicate that
208 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
209 * when an input bundle is needed for validation (e.g., mirroring or
210 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
211 * any 'port' structs, so care must be taken when dealing with it. */
212 static struct xbundle ofpp_none_bundle
= {
214 .vlan_mode
= PORT_VLAN_TRUNK
217 /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from
218 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
219 * traffic egressing the 'ofport' with that priority should be marked with. */
220 struct skb_priority_to_dscp
{
221 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'skb_priorities'. */
222 uint32_t skb_priority
; /* Priority of this queue (see struct flow). */
224 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
239 /* xlate_cache entries hold enough information to perform the side effects of
240 * xlate_actions() for a rule, without needing to perform rule translation
241 * from scratch. The primary usage of these is to submit statistics to objects
242 * that a flow relates to, although they may be used for other effects as well
243 * (for instance, refreshing hard timeouts for learned flows). */
247 struct rule_dpif
*rule
;
254 struct netflow
*netflow
;
259 struct mbridge
*mbridge
;
260 mirror_mask_t mirrors
;
268 struct ofproto_dpif
*ofproto
;
269 struct ofputil_flow_mod
*fm
;
270 struct ofpbuf
*ofpacts
;
273 struct ofproto_dpif
*ofproto
;
278 struct rule_dpif
*rule
;
283 struct group_dpif
*group
;
284 struct ofputil_bucket
*bucket
;
289 #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \
290 entries = xcache->entries; \
291 for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \
293 entry = ofpbuf_try_pull(&entries, sizeof *entry))
296 struct ofpbuf entries
;
299 /* Xlate config contains hash maps of all bridges, bundles and ports.
300 * Xcfgp contains the pointer to the current xlate configuration.
301 * When the main thread needs to change the configuration, it copies xcfgp to
302 * new_xcfg and edits new_xcfg. This enables the use of RCU locking which
303 * does not block handler and revalidator threads. */
305 struct hmap xbridges
;
306 struct hmap xbundles
;
309 static OVSRCU_TYPE(struct xlate_cfg
*) xcfgp
= OVSRCU_TYPE_INITIALIZER
;
310 static struct xlate_cfg
*new_xcfg
= NULL
;
312 static bool may_receive(const struct xport
*, struct xlate_ctx
*);
313 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
315 static void xlate_normal(struct xlate_ctx
*);
316 static void xlate_report(struct xlate_ctx
*, const char *);
317 static void xlate_table_action(struct xlate_ctx
*, ofp_port_t in_port
,
318 uint8_t table_id
, bool may_packet_in
,
319 bool honor_table_miss
);
320 static bool input_vid_is_valid(uint16_t vid
, struct xbundle
*, bool warn
);
321 static uint16_t input_vid_to_vlan(const struct xbundle
*, uint16_t vid
);
322 static void output_normal(struct xlate_ctx
*, const struct xbundle
*,
324 static void compose_output_action(struct xlate_ctx
*, ofp_port_t ofp_port
);
326 static struct xbridge
*xbridge_lookup(struct xlate_cfg
*,
327 const struct ofproto_dpif
*);
328 static struct xbundle
*xbundle_lookup(struct xlate_cfg
*,
329 const struct ofbundle
*);
330 static struct xport
*xport_lookup(struct xlate_cfg
*,
331 const struct ofport_dpif
*);
332 static struct xport
*get_ofp_port(const struct xbridge
*, ofp_port_t ofp_port
);
333 static struct skb_priority_to_dscp
*get_skb_priority(const struct xport
*,
334 uint32_t skb_priority
);
335 static void clear_skb_priorities(struct xport
*);
336 static bool dscp_from_skb_priority(const struct xport
*, uint32_t skb_priority
,
339 static struct xc_entry
*xlate_cache_add_entry(struct xlate_cache
*xc
,
341 static void xlate_xbridge_init(struct xlate_cfg
*, struct xbridge
*);
342 static void xlate_xbundle_init(struct xlate_cfg
*, struct xbundle
*);
343 static void xlate_xport_init(struct xlate_cfg
*, struct xport
*);
344 static void xlate_xbridge_set(struct xbridge
*xbridge
,
346 struct rule_dpif
*miss_rule
,
347 struct rule_dpif
*no_packet_in_rule
,
348 const struct mac_learning
*ml
, struct stp
*stp
,
349 const struct mbridge
*mbridge
,
350 const struct dpif_sflow
*sflow
,
351 const struct dpif_ipfix
*ipfix
,
352 const struct netflow
*netflow
,
353 enum ofp_config_flags frag
,
354 bool forward_bpdu
, bool has_in_band
,
356 bool variable_length_userdata
,
357 size_t max_mpls_depth
);
358 static void xlate_xbundle_set(struct xbundle
*xbundle
,
359 enum port_vlan_mode vlan_mode
, int vlan
,
360 unsigned long *trunks
, bool use_priority_tags
,
361 const struct bond
*bond
, const struct lacp
*lacp
,
363 static void xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
364 const struct netdev
*netdev
, const struct cfm
*cfm
,
365 const struct bfd
*bfd
, int stp_port_no
,
366 enum ofputil_port_config config
,
367 enum ofputil_port_state state
, bool is_tunnel
,
369 static void xlate_xbridge_remove(struct xlate_cfg
*, struct xbridge
*);
370 static void xlate_xbundle_remove(struct xlate_cfg
*, struct xbundle
*);
371 static void xlate_xport_remove(struct xlate_cfg
*, struct xport
*);
372 static void xlate_xbridge_copy(struct xbridge
*);
373 static void xlate_xbundle_copy(struct xbridge
*, struct xbundle
*);
374 static void xlate_xport_copy(struct xbridge
*, struct xbundle
*,
376 static void xlate_xcfg_free(struct xlate_cfg
*);
380 xlate_xbridge_init(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
382 list_init(&xbridge
->xbundles
);
383 hmap_init(&xbridge
->xports
);
384 hmap_insert(&xcfg
->xbridges
, &xbridge
->hmap_node
,
385 hash_pointer(xbridge
->ofproto
, 0));
389 xlate_xbundle_init(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
391 list_init(&xbundle
->xports
);
392 list_insert(&xbundle
->xbridge
->xbundles
, &xbundle
->list_node
);
393 hmap_insert(&xcfg
->xbundles
, &xbundle
->hmap_node
,
394 hash_pointer(xbundle
->ofbundle
, 0));
398 xlate_xport_init(struct xlate_cfg
*xcfg
, struct xport
*xport
)
400 hmap_init(&xport
->skb_priorities
);
401 hmap_insert(&xcfg
->xports
, &xport
->hmap_node
,
402 hash_pointer(xport
->ofport
, 0));
403 hmap_insert(&xport
->xbridge
->xports
, &xport
->ofp_node
,
404 hash_ofp_port(xport
->ofp_port
));
408 xlate_xbridge_set(struct xbridge
*xbridge
,
410 struct rule_dpif
*miss_rule
,
411 struct rule_dpif
*no_packet_in_rule
,
412 const struct mac_learning
*ml
, struct stp
*stp
,
413 const struct mbridge
*mbridge
,
414 const struct dpif_sflow
*sflow
,
415 const struct dpif_ipfix
*ipfix
,
416 const struct netflow
*netflow
, enum ofp_config_flags frag
,
417 bool forward_bpdu
, bool has_in_band
,
419 bool variable_length_userdata
,
420 size_t max_mpls_depth
)
422 if (xbridge
->ml
!= ml
) {
423 mac_learning_unref(xbridge
->ml
);
424 xbridge
->ml
= mac_learning_ref(ml
);
427 if (xbridge
->mbridge
!= mbridge
) {
428 mbridge_unref(xbridge
->mbridge
);
429 xbridge
->mbridge
= mbridge_ref(mbridge
);
432 if (xbridge
->sflow
!= sflow
) {
433 dpif_sflow_unref(xbridge
->sflow
);
434 xbridge
->sflow
= dpif_sflow_ref(sflow
);
437 if (xbridge
->ipfix
!= ipfix
) {
438 dpif_ipfix_unref(xbridge
->ipfix
);
439 xbridge
->ipfix
= dpif_ipfix_ref(ipfix
);
442 if (xbridge
->stp
!= stp
) {
443 stp_unref(xbridge
->stp
);
444 xbridge
->stp
= stp_ref(stp
);
447 if (xbridge
->netflow
!= netflow
) {
448 netflow_unref(xbridge
->netflow
);
449 xbridge
->netflow
= netflow_ref(netflow
);
452 xbridge
->dpif
= dpif
;
453 xbridge
->forward_bpdu
= forward_bpdu
;
454 xbridge
->has_in_band
= has_in_band
;
455 xbridge
->frag
= frag
;
456 xbridge
->miss_rule
= miss_rule
;
457 xbridge
->no_packet_in_rule
= no_packet_in_rule
;
458 xbridge
->enable_recirc
= enable_recirc
;
459 xbridge
->variable_length_userdata
= variable_length_userdata
;
460 xbridge
->max_mpls_depth
= max_mpls_depth
;
464 xlate_xbundle_set(struct xbundle
*xbundle
,
465 enum port_vlan_mode vlan_mode
, int vlan
,
466 unsigned long *trunks
, bool use_priority_tags
,
467 const struct bond
*bond
, const struct lacp
*lacp
,
470 ovs_assert(xbundle
->xbridge
);
472 xbundle
->vlan_mode
= vlan_mode
;
473 xbundle
->vlan
= vlan
;
474 xbundle
->trunks
= trunks
;
475 xbundle
->use_priority_tags
= use_priority_tags
;
476 xbundle
->floodable
= floodable
;
478 if (xbundle
->bond
!= bond
) {
479 bond_unref(xbundle
->bond
);
480 xbundle
->bond
= bond_ref(bond
);
483 if (xbundle
->lacp
!= lacp
) {
484 lacp_unref(xbundle
->lacp
);
485 xbundle
->lacp
= lacp_ref(lacp
);
490 xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
491 const struct netdev
*netdev
, const struct cfm
*cfm
,
492 const struct bfd
*bfd
, int stp_port_no
,
493 enum ofputil_port_config config
, enum ofputil_port_state state
,
494 bool is_tunnel
, bool may_enable
)
496 xport
->config
= config
;
497 xport
->state
= state
;
498 xport
->stp_port_no
= stp_port_no
;
499 xport
->is_tunnel
= is_tunnel
;
500 xport
->may_enable
= may_enable
;
501 xport
->odp_port
= odp_port
;
503 if (xport
->cfm
!= cfm
) {
504 cfm_unref(xport
->cfm
);
505 xport
->cfm
= cfm_ref(cfm
);
508 if (xport
->bfd
!= bfd
) {
509 bfd_unref(xport
->bfd
);
510 xport
->bfd
= bfd_ref(bfd
);
513 if (xport
->netdev
!= netdev
) {
514 netdev_close(xport
->netdev
);
515 xport
->netdev
= netdev_ref(netdev
);
520 xlate_xbridge_copy(struct xbridge
*xbridge
)
522 struct xbundle
*xbundle
;
524 struct xbridge
*new_xbridge
= xzalloc(sizeof *xbridge
);
525 new_xbridge
->ofproto
= xbridge
->ofproto
;
526 new_xbridge
->name
= xstrdup(xbridge
->name
);
527 xlate_xbridge_init(new_xcfg
, new_xbridge
);
529 xlate_xbridge_set(new_xbridge
,
530 xbridge
->dpif
, xbridge
->miss_rule
,
531 xbridge
->no_packet_in_rule
, xbridge
->ml
, xbridge
->stp
,
532 xbridge
->mbridge
, xbridge
->sflow
, xbridge
->ipfix
,
533 xbridge
->netflow
, xbridge
->frag
, xbridge
->forward_bpdu
,
534 xbridge
->has_in_band
, xbridge
->enable_recirc
,
535 xbridge
->variable_length_userdata
,
536 xbridge
->max_mpls_depth
);
537 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
538 xlate_xbundle_copy(new_xbridge
, xbundle
);
541 /* Copy xports which are not part of a xbundle */
542 HMAP_FOR_EACH (xport
, ofp_node
, &xbridge
->xports
) {
543 if (!xport
->xbundle
) {
544 xlate_xport_copy(new_xbridge
, NULL
, xport
);
550 xlate_xbundle_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
)
553 struct xbundle
*new_xbundle
= xzalloc(sizeof *xbundle
);
554 new_xbundle
->ofbundle
= xbundle
->ofbundle
;
555 new_xbundle
->xbridge
= xbridge
;
556 new_xbundle
->name
= xstrdup(xbundle
->name
);
557 xlate_xbundle_init(new_xcfg
, new_xbundle
);
559 xlate_xbundle_set(new_xbundle
, xbundle
->vlan_mode
,
560 xbundle
->vlan
, xbundle
->trunks
,
561 xbundle
->use_priority_tags
, xbundle
->bond
, xbundle
->lacp
,
563 LIST_FOR_EACH (xport
, bundle_node
, &xbundle
->xports
) {
564 xlate_xport_copy(xbridge
, new_xbundle
, xport
);
569 xlate_xport_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
,
572 struct skb_priority_to_dscp
*pdscp
, *new_pdscp
;
573 struct xport
*new_xport
= xzalloc(sizeof *xport
);
574 new_xport
->ofport
= xport
->ofport
;
575 new_xport
->ofp_port
= xport
->ofp_port
;
576 new_xport
->xbridge
= xbridge
;
577 xlate_xport_init(new_xcfg
, new_xport
);
579 xlate_xport_set(new_xport
, xport
->odp_port
, xport
->netdev
, xport
->cfm
,
580 xport
->bfd
, xport
->stp_port_no
, xport
->config
, xport
->state
,
581 xport
->is_tunnel
, xport
->may_enable
);
584 struct xport
*peer
= xport_lookup(new_xcfg
, xport
->peer
->ofport
);
586 new_xport
->peer
= peer
;
587 new_xport
->peer
->peer
= new_xport
;
592 new_xport
->xbundle
= xbundle
;
593 list_insert(&new_xport
->xbundle
->xports
, &new_xport
->bundle_node
);
596 HMAP_FOR_EACH (pdscp
, hmap_node
, &xport
->skb_priorities
) {
597 new_pdscp
= xmalloc(sizeof *pdscp
);
598 new_pdscp
->skb_priority
= pdscp
->skb_priority
;
599 new_pdscp
->dscp
= pdscp
->dscp
;
600 hmap_insert(&new_xport
->skb_priorities
, &new_pdscp
->hmap_node
,
601 hash_int(new_pdscp
->skb_priority
, 0));
605 /* Sets the current xlate configuration to new_xcfg and frees the old xlate
606 * configuration in xcfgp.
608 * This needs to be called after editing the xlate configuration.
610 * Functions that edit the new xlate configuration are
611 * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove.
617 * edit_xlate_configuration();
619 * xlate_txn_commit(); */
621 xlate_txn_commit(void)
623 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
625 ovsrcu_set(&xcfgp
, new_xcfg
);
626 ovsrcu_postpone(xlate_xcfg_free
, xcfg
);
631 /* Copies the current xlate configuration in xcfgp to new_xcfg.
633 * This needs to be called prior to editing the xlate configuration. */
635 xlate_txn_start(void)
637 struct xbridge
*xbridge
;
638 struct xlate_cfg
*xcfg
;
640 ovs_assert(!new_xcfg
);
642 new_xcfg
= xmalloc(sizeof *new_xcfg
);
643 hmap_init(&new_xcfg
->xbridges
);
644 hmap_init(&new_xcfg
->xbundles
);
645 hmap_init(&new_xcfg
->xports
);
647 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
652 HMAP_FOR_EACH (xbridge
, hmap_node
, &xcfg
->xbridges
) {
653 xlate_xbridge_copy(xbridge
);
659 xlate_xcfg_free(struct xlate_cfg
*xcfg
)
661 struct xbridge
*xbridge
, *next_xbridge
;
667 HMAP_FOR_EACH_SAFE (xbridge
, next_xbridge
, hmap_node
, &xcfg
->xbridges
) {
668 xlate_xbridge_remove(xcfg
, xbridge
);
671 hmap_destroy(&xcfg
->xbridges
);
672 hmap_destroy(&xcfg
->xbundles
);
673 hmap_destroy(&xcfg
->xports
);
678 xlate_ofproto_set(struct ofproto_dpif
*ofproto
, const char *name
,
679 struct dpif
*dpif
, struct rule_dpif
*miss_rule
,
680 struct rule_dpif
*no_packet_in_rule
,
681 const struct mac_learning
*ml
, struct stp
*stp
,
682 const struct mbridge
*mbridge
,
683 const struct dpif_sflow
*sflow
,
684 const struct dpif_ipfix
*ipfix
,
685 const struct netflow
*netflow
, enum ofp_config_flags frag
,
686 bool forward_bpdu
, bool has_in_band
,
688 bool variable_length_userdata
,
689 size_t max_mpls_depth
)
691 struct xbridge
*xbridge
;
693 ovs_assert(new_xcfg
);
695 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
697 xbridge
= xzalloc(sizeof *xbridge
);
698 xbridge
->ofproto
= ofproto
;
700 xlate_xbridge_init(new_xcfg
, xbridge
);
704 xbridge
->name
= xstrdup(name
);
706 xlate_xbridge_set(xbridge
, dpif
, miss_rule
, no_packet_in_rule
, ml
, stp
,
707 mbridge
, sflow
, ipfix
, netflow
, frag
, forward_bpdu
,
708 has_in_band
, enable_recirc
, variable_length_userdata
,
713 xlate_xbridge_remove(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
715 struct xbundle
*xbundle
, *next_xbundle
;
716 struct xport
*xport
, *next_xport
;
722 HMAP_FOR_EACH_SAFE (xport
, next_xport
, ofp_node
, &xbridge
->xports
) {
723 xlate_xport_remove(xcfg
, xport
);
726 LIST_FOR_EACH_SAFE (xbundle
, next_xbundle
, list_node
, &xbridge
->xbundles
) {
727 xlate_xbundle_remove(xcfg
, xbundle
);
730 hmap_remove(&xcfg
->xbridges
, &xbridge
->hmap_node
);
731 mac_learning_unref(xbridge
->ml
);
732 mbridge_unref(xbridge
->mbridge
);
733 dpif_sflow_unref(xbridge
->sflow
);
734 dpif_ipfix_unref(xbridge
->ipfix
);
735 stp_unref(xbridge
->stp
);
736 hmap_destroy(&xbridge
->xports
);
742 xlate_remove_ofproto(struct ofproto_dpif
*ofproto
)
744 struct xbridge
*xbridge
;
746 ovs_assert(new_xcfg
);
748 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
749 xlate_xbridge_remove(new_xcfg
, xbridge
);
753 xlate_bundle_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
754 const char *name
, enum port_vlan_mode vlan_mode
, int vlan
,
755 unsigned long *trunks
, bool use_priority_tags
,
756 const struct bond
*bond
, const struct lacp
*lacp
,
759 struct xbundle
*xbundle
;
761 ovs_assert(new_xcfg
);
763 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
765 xbundle
= xzalloc(sizeof *xbundle
);
766 xbundle
->ofbundle
= ofbundle
;
767 xbundle
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
769 xlate_xbundle_init(new_xcfg
, xbundle
);
773 xbundle
->name
= xstrdup(name
);
775 xlate_xbundle_set(xbundle
, vlan_mode
, vlan
, trunks
,
776 use_priority_tags
, bond
, lacp
, floodable
);
780 xlate_xbundle_remove(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
782 struct xport
*xport
, *next
;
788 LIST_FOR_EACH_SAFE (xport
, next
, bundle_node
, &xbundle
->xports
) {
789 list_remove(&xport
->bundle_node
);
790 xport
->xbundle
= NULL
;
793 hmap_remove(&xcfg
->xbundles
, &xbundle
->hmap_node
);
794 list_remove(&xbundle
->list_node
);
795 bond_unref(xbundle
->bond
);
796 lacp_unref(xbundle
->lacp
);
802 xlate_bundle_remove(struct ofbundle
*ofbundle
)
804 struct xbundle
*xbundle
;
806 ovs_assert(new_xcfg
);
808 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
809 xlate_xbundle_remove(new_xcfg
, xbundle
);
813 xlate_ofport_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
814 struct ofport_dpif
*ofport
, ofp_port_t ofp_port
,
815 odp_port_t odp_port
, const struct netdev
*netdev
,
816 const struct cfm
*cfm
, const struct bfd
*bfd
,
817 struct ofport_dpif
*peer
, int stp_port_no
,
818 const struct ofproto_port_queue
*qdscp_list
, size_t n_qdscp
,
819 enum ofputil_port_config config
,
820 enum ofputil_port_state state
, bool is_tunnel
,
826 ovs_assert(new_xcfg
);
828 xport
= xport_lookup(new_xcfg
, ofport
);
830 xport
= xzalloc(sizeof *xport
);
831 xport
->ofport
= ofport
;
832 xport
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
833 xport
->ofp_port
= ofp_port
;
835 xlate_xport_init(new_xcfg
, xport
);
838 ovs_assert(xport
->ofp_port
== ofp_port
);
840 xlate_xport_set(xport
, odp_port
, netdev
, cfm
, bfd
, stp_port_no
, config
,
841 state
, is_tunnel
, may_enable
);
844 xport
->peer
->peer
= NULL
;
846 xport
->peer
= xport_lookup(new_xcfg
, peer
);
848 xport
->peer
->peer
= xport
;
851 if (xport
->xbundle
) {
852 list_remove(&xport
->bundle_node
);
854 xport
->xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
855 if (xport
->xbundle
) {
856 list_insert(&xport
->xbundle
->xports
, &xport
->bundle_node
);
859 clear_skb_priorities(xport
);
860 for (i
= 0; i
< n_qdscp
; i
++) {
861 struct skb_priority_to_dscp
*pdscp
;
862 uint32_t skb_priority
;
864 if (dpif_queue_to_priority(xport
->xbridge
->dpif
, qdscp_list
[i
].queue
,
869 pdscp
= xmalloc(sizeof *pdscp
);
870 pdscp
->skb_priority
= skb_priority
;
871 pdscp
->dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
872 hmap_insert(&xport
->skb_priorities
, &pdscp
->hmap_node
,
873 hash_int(pdscp
->skb_priority
, 0));
878 xlate_xport_remove(struct xlate_cfg
*xcfg
, struct xport
*xport
)
885 xport
->peer
->peer
= NULL
;
889 if (xport
->xbundle
) {
890 list_remove(&xport
->bundle_node
);
893 clear_skb_priorities(xport
);
894 hmap_destroy(&xport
->skb_priorities
);
896 hmap_remove(&xcfg
->xports
, &xport
->hmap_node
);
897 hmap_remove(&xport
->xbridge
->xports
, &xport
->ofp_node
);
899 netdev_close(xport
->netdev
);
900 cfm_unref(xport
->cfm
);
901 bfd_unref(xport
->bfd
);
906 xlate_ofport_remove(struct ofport_dpif
*ofport
)
910 ovs_assert(new_xcfg
);
912 xport
= xport_lookup(new_xcfg
, ofport
);
913 xlate_xport_remove(new_xcfg
, xport
);
916 /* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
917 * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
918 * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with
919 * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and
920 * 'netflow' with the appropriate handles for those protocols if they're
921 * enabled. Caller is responsible for unrefing them.
923 * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
924 * 'flow''s in_port to OFPP_NONE.
926 * This function does post-processing on data returned from
927 * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
928 * of the upcall processing logic. In particular, if the extracted in_port is
929 * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
930 * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
931 * a VLAN header onto 'packet' (if it is nonnull).
933 * Similarly, this function also includes some logic to help with tunnels. It
934 * may modify 'flow' as necessary to make the tunneling implementation
935 * transparent to the upcall processing logic.
937 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
938 * or some other positive errno if there are other problems. */
940 xlate_receive(const struct dpif_backer
*backer
, struct ofpbuf
*packet
,
941 const struct nlattr
*key
, size_t key_len
, struct flow
*flow
,
942 struct ofproto_dpif
**ofproto
, struct dpif_ipfix
**ipfix
,
943 struct dpif_sflow
**sflow
, struct netflow
**netflow
,
944 odp_port_t
*odp_in_port
)
946 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
948 const struct xport
*xport
;
950 if (odp_flow_key_to_flow(key
, key_len
, flow
) == ODP_FIT_ERROR
) {
956 *odp_in_port
= flow
->in_port
.odp_port
;
959 xport
= xport_lookup(xcfg
, tnl_port_should_receive(flow
)
960 ? tnl_port_receive(flow
)
961 : odp_port_to_ofport(backer
, flow
->in_port
.odp_port
));
963 flow
->in_port
.ofp_port
= xport
? xport
->ofp_port
: OFPP_NONE
;
968 if (vsp_adjust_flow(xport
->xbridge
->ofproto
, flow
)) {
970 /* Make the packet resemble the flow, so that it gets sent to
971 * an OpenFlow controller properly, so that it looks correct
972 * for sFlow, and so that flow_extract() will get the correct
973 * vlan_tci if it is called on 'packet'. */
974 eth_push_vlan(packet
, htons(ETH_TYPE_VLAN
), flow
->vlan_tci
);
980 *ofproto
= xport
->xbridge
->ofproto
;
984 *ipfix
= dpif_ipfix_ref(xport
->xbridge
->ipfix
);
988 *sflow
= dpif_sflow_ref(xport
->xbridge
->sflow
);
992 *netflow
= netflow_ref(xport
->xbridge
->netflow
);
997 static struct xbridge
*
998 xbridge_lookup(struct xlate_cfg
*xcfg
, const struct ofproto_dpif
*ofproto
)
1000 struct hmap
*xbridges
;
1001 struct xbridge
*xbridge
;
1003 if (!ofproto
|| !xcfg
) {
1007 xbridges
= &xcfg
->xbridges
;
1009 HMAP_FOR_EACH_IN_BUCKET (xbridge
, hmap_node
, hash_pointer(ofproto
, 0),
1011 if (xbridge
->ofproto
== ofproto
) {
1018 static struct xbundle
*
1019 xbundle_lookup(struct xlate_cfg
*xcfg
, const struct ofbundle
*ofbundle
)
1021 struct hmap
*xbundles
;
1022 struct xbundle
*xbundle
;
1024 if (!ofbundle
|| !xcfg
) {
1028 xbundles
= &xcfg
->xbundles
;
1030 HMAP_FOR_EACH_IN_BUCKET (xbundle
, hmap_node
, hash_pointer(ofbundle
, 0),
1032 if (xbundle
->ofbundle
== ofbundle
) {
1039 static struct xport
*
1040 xport_lookup(struct xlate_cfg
*xcfg
, const struct ofport_dpif
*ofport
)
1042 struct hmap
*xports
;
1043 struct xport
*xport
;
1045 if (!ofport
|| !xcfg
) {
1049 xports
= &xcfg
->xports
;
1051 HMAP_FOR_EACH_IN_BUCKET (xport
, hmap_node
, hash_pointer(ofport
, 0),
1053 if (xport
->ofport
== ofport
) {
1060 static struct stp_port
*
1061 xport_get_stp_port(const struct xport
*xport
)
1063 return xport
->xbridge
->stp
&& xport
->stp_port_no
!= -1
1064 ? stp_get_port(xport
->xbridge
->stp
, xport
->stp_port_no
)
1069 xport_stp_learn_state(const struct xport
*xport
)
1071 struct stp_port
*sp
= xport_get_stp_port(xport
);
1072 return stp_learn_in_state(sp
? stp_port_get_state(sp
) : STP_DISABLED
);
1076 xport_stp_forward_state(const struct xport
*xport
)
1078 struct stp_port
*sp
= xport_get_stp_port(xport
);
1079 return stp_forward_in_state(sp
? stp_port_get_state(sp
) : STP_DISABLED
);
1083 xport_stp_listen_state(const struct xport
*xport
)
1085 struct stp_port
*sp
= xport_get_stp_port(xport
);
1086 return stp_listen_in_state(sp
? stp_port_get_state(sp
) : STP_DISABLED
);
1089 /* Returns true if STP should process 'flow'. Sets fields in 'wc' that
1090 * were used to make the determination.*/
1092 stp_should_process_flow(const struct flow
*flow
, struct flow_wildcards
*wc
)
1094 /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */
1095 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1096 return is_stp(flow
);
1100 stp_process_packet(const struct xport
*xport
, const struct ofpbuf
*packet
)
1102 struct stp_port
*sp
= xport_get_stp_port(xport
);
1103 struct ofpbuf payload
= *packet
;
1104 struct eth_header
*eth
= ofpbuf_data(&payload
);
1106 /* Sink packets on ports that have STP disabled when the bridge has
1108 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
1112 /* Trim off padding on payload. */
1113 if (ofpbuf_size(&payload
) > ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1114 ofpbuf_set_size(&payload
, ntohs(eth
->eth_type
) + ETH_HEADER_LEN
);
1117 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1118 stp_received_bpdu(sp
, ofpbuf_data(&payload
), ofpbuf_size(&payload
));
1122 static struct xport
*
1123 get_ofp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1125 struct xport
*xport
;
1127 HMAP_FOR_EACH_IN_BUCKET (xport
, ofp_node
, hash_ofp_port(ofp_port
),
1129 if (xport
->ofp_port
== ofp_port
) {
1137 ofp_port_to_odp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1139 const struct xport
*xport
= get_ofp_port(xbridge
, ofp_port
);
1140 return xport
? xport
->odp_port
: ODPP_NONE
;
1144 odp_port_is_alive(const struct xlate_ctx
*ctx
, ofp_port_t ofp_port
)
1146 struct xport
*xport
;
1148 xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
1149 if (!xport
|| xport
->config
& OFPUTIL_PC_PORT_DOWN
||
1150 xport
->state
& OFPUTIL_PS_LINK_DOWN
) {
1157 static struct ofputil_bucket
*
1158 group_first_live_bucket(const struct xlate_ctx
*, const struct group_dpif
*,
1162 group_is_alive(const struct xlate_ctx
*ctx
, uint32_t group_id
, int depth
)
1164 struct group_dpif
*group
;
1166 if (group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
)) {
1167 struct ofputil_bucket
*bucket
;
1169 bucket
= group_first_live_bucket(ctx
, group
, depth
);
1170 group_dpif_unref(group
);
1171 return bucket
== NULL
;
1177 #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */
1180 bucket_is_alive(const struct xlate_ctx
*ctx
,
1181 struct ofputil_bucket
*bucket
, int depth
)
1183 if (depth
>= MAX_LIVENESS_RECURSION
) {
1184 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
1186 VLOG_WARN_RL(&rl
, "bucket chaining exceeded %d links",
1187 MAX_LIVENESS_RECURSION
);
1191 return (!ofputil_bucket_has_liveness(bucket
)
1192 || (bucket
->watch_port
!= OFPP_ANY
1193 && odp_port_is_alive(ctx
, bucket
->watch_port
))
1194 || (bucket
->watch_group
!= OFPG_ANY
1195 && group_is_alive(ctx
, bucket
->watch_group
, depth
+ 1)));
1198 static struct ofputil_bucket
*
1199 group_first_live_bucket(const struct xlate_ctx
*ctx
,
1200 const struct group_dpif
*group
, int depth
)
1202 struct ofputil_bucket
*bucket
;
1203 const struct list
*buckets
;
1205 group_dpif_get_buckets(group
, &buckets
);
1206 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1207 if (bucket_is_alive(ctx
, bucket
, depth
)) {
1215 static struct ofputil_bucket
*
1216 group_best_live_bucket(const struct xlate_ctx
*ctx
,
1217 const struct group_dpif
*group
,
1220 struct ofputil_bucket
*best_bucket
= NULL
;
1221 uint32_t best_score
= 0;
1224 struct ofputil_bucket
*bucket
;
1225 const struct list
*buckets
;
1227 group_dpif_get_buckets(group
, &buckets
);
1228 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1229 if (bucket_is_alive(ctx
, bucket
, 0)) {
1230 uint32_t score
= (hash_int(i
, basis
) & 0xffff) * bucket
->weight
;
1231 if (score
>= best_score
) {
1232 best_bucket
= bucket
;
1243 xbundle_trunks_vlan(const struct xbundle
*bundle
, uint16_t vlan
)
1245 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
1246 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
1250 xbundle_includes_vlan(const struct xbundle
*xbundle
, uint16_t vlan
)
1252 return vlan
== xbundle
->vlan
|| xbundle_trunks_vlan(xbundle
, vlan
);
1255 static mirror_mask_t
1256 xbundle_mirror_out(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1258 return xbundle
!= &ofpp_none_bundle
1259 ? mirror_bundle_out(xbridge
->mbridge
, xbundle
->ofbundle
)
1263 static mirror_mask_t
1264 xbundle_mirror_src(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1266 return xbundle
!= &ofpp_none_bundle
1267 ? mirror_bundle_src(xbridge
->mbridge
, xbundle
->ofbundle
)
1271 static mirror_mask_t
1272 xbundle_mirror_dst(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1274 return xbundle
!= &ofpp_none_bundle
1275 ? mirror_bundle_dst(xbridge
->mbridge
, xbundle
->ofbundle
)
1279 static struct xbundle
*
1280 lookup_input_bundle(const struct xbridge
*xbridge
, ofp_port_t in_port
,
1281 bool warn
, struct xport
**in_xportp
)
1283 struct xport
*xport
;
1285 /* Find the port and bundle for the received packet. */
1286 xport
= get_ofp_port(xbridge
, in_port
);
1290 if (xport
&& xport
->xbundle
) {
1291 return xport
->xbundle
;
1294 /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+),
1295 * which a controller may use as the ingress port for traffic that
1296 * it is sourcing. */
1297 if (in_port
== OFPP_CONTROLLER
|| in_port
== OFPP_NONE
) {
1298 return &ofpp_none_bundle
;
1301 /* Odd. A few possible reasons here:
1303 * - We deleted a port but there are still a few packets queued up
1306 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
1307 * we don't know about.
1309 * - The ofproto client didn't configure the port as part of a bundle.
1310 * This is particularly likely to happen if a packet was received on the
1311 * port after it was created, but before the client had a chance to
1312 * configure its bundle.
1315 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1317 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
1318 "port %"PRIu16
, xbridge
->name
, in_port
);
1324 add_mirror_actions(struct xlate_ctx
*ctx
, const struct flow
*orig_flow
)
1326 const struct xbridge
*xbridge
= ctx
->xbridge
;
1327 mirror_mask_t mirrors
;
1328 struct xbundle
*in_xbundle
;
1332 mirrors
= ctx
->xout
->mirrors
;
1333 ctx
->xout
->mirrors
= 0;
1335 in_xbundle
= lookup_input_bundle(xbridge
, orig_flow
->in_port
.ofp_port
,
1336 ctx
->xin
->packet
!= NULL
, NULL
);
1340 mirrors
|= xbundle_mirror_src(xbridge
, in_xbundle
);
1342 /* Drop frames on bundles reserved for mirroring. */
1343 if (xbundle_mirror_out(xbridge
, in_xbundle
)) {
1344 if (ctx
->xin
->packet
!= NULL
) {
1345 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1346 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
1347 "%s, which is reserved exclusively for mirroring",
1348 ctx
->xbridge
->name
, in_xbundle
->name
);
1350 ofpbuf_clear(&ctx
->xout
->odp_actions
);
1355 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
1356 if (!input_vid_is_valid(vid
, in_xbundle
, ctx
->xin
->packet
!= NULL
)) {
1359 vlan
= input_vid_to_vlan(in_xbundle
, vid
);
1365 /* Restore the original packet before adding the mirror actions. */
1366 ctx
->xin
->flow
= *orig_flow
;
1369 mirror_mask_t dup_mirrors
;
1370 struct ofbundle
*out
;
1371 unsigned long *vlans
;
1376 has_mirror
= mirror_get(xbridge
->mbridge
, raw_ctz(mirrors
),
1377 &vlans
, &dup_mirrors
, &out
, &out_vlan
);
1378 ovs_assert(has_mirror
);
1381 ctx
->xout
->wc
.masks
.vlan_tci
|= htons(VLAN_CFI
| VLAN_VID_MASK
);
1383 vlan_mirrored
= !vlans
|| bitmap_is_set(vlans
, vlan
);
1386 if (!vlan_mirrored
) {
1387 mirrors
= zero_rightmost_1bit(mirrors
);
1391 mirrors
&= ~dup_mirrors
;
1392 ctx
->xout
->mirrors
|= dup_mirrors
;
1394 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1395 struct xbundle
*out_xbundle
= xbundle_lookup(xcfg
, out
);
1397 output_normal(ctx
, out_xbundle
, vlan
);
1399 } else if (vlan
!= out_vlan
1400 && !eth_addr_is_reserved(orig_flow
->dl_dst
)) {
1401 struct xbundle
*xbundle
;
1403 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
1404 if (xbundle_includes_vlan(xbundle
, out_vlan
)
1405 && !xbundle_mirror_out(xbridge
, xbundle
)) {
1406 output_normal(ctx
, xbundle
, out_vlan
);
1413 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
1414 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle',
1415 * the bundle on which the packet was received, returns the VLAN to which the
1418 * Both 'vid' and the return value are in the range 0...4095. */
1420 input_vid_to_vlan(const struct xbundle
*in_xbundle
, uint16_t vid
)
1422 switch (in_xbundle
->vlan_mode
) {
1423 case PORT_VLAN_ACCESS
:
1424 return in_xbundle
->vlan
;
1427 case PORT_VLAN_TRUNK
:
1430 case PORT_VLAN_NATIVE_UNTAGGED
:
1431 case PORT_VLAN_NATIVE_TAGGED
:
1432 return vid
? vid
: in_xbundle
->vlan
;
1439 /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'.
1440 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
1443 * 'vid' should be the VID obtained from the 802.1Q header that was received as
1444 * part of a packet (specify 0 if there was no 802.1Q header), in the range
1447 input_vid_is_valid(uint16_t vid
, struct xbundle
*in_xbundle
, bool warn
)
1449 /* Allow any VID on the OFPP_NONE port. */
1450 if (in_xbundle
== &ofpp_none_bundle
) {
1454 switch (in_xbundle
->vlan_mode
) {
1455 case PORT_VLAN_ACCESS
:
1458 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1459 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" tagged "
1460 "packet received on port %s configured as VLAN "
1461 "%"PRIu16
" access port", vid
, in_xbundle
->name
,
1468 case PORT_VLAN_NATIVE_UNTAGGED
:
1469 case PORT_VLAN_NATIVE_TAGGED
:
1471 /* Port must always carry its native VLAN. */
1475 case PORT_VLAN_TRUNK
:
1476 if (!xbundle_includes_vlan(in_xbundle
, vid
)) {
1478 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1479 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" packet "
1480 "received on port %s not configured for trunking "
1481 "VLAN %"PRIu16
, vid
, in_xbundle
->name
, vid
);
1493 /* Given 'vlan', the VLAN that a packet belongs to, and
1494 * 'out_xbundle', a bundle on which the packet is to be output, returns the VID
1495 * that should be included in the 802.1Q header. (If the return value is 0,
1496 * then the 802.1Q header should only be included in the packet if there is a
1499 * Both 'vlan' and the return value are in the range 0...4095. */
1501 output_vlan_to_vid(const struct xbundle
*out_xbundle
, uint16_t vlan
)
1503 switch (out_xbundle
->vlan_mode
) {
1504 case PORT_VLAN_ACCESS
:
1507 case PORT_VLAN_TRUNK
:
1508 case PORT_VLAN_NATIVE_TAGGED
:
1511 case PORT_VLAN_NATIVE_UNTAGGED
:
1512 return vlan
== out_xbundle
->vlan
? 0 : vlan
;
1520 output_normal(struct xlate_ctx
*ctx
, const struct xbundle
*out_xbundle
,
1523 ovs_be16
*flow_tci
= &ctx
->xin
->flow
.vlan_tci
;
1525 ovs_be16 tci
, old_tci
;
1526 struct xport
*xport
;
1528 vid
= output_vlan_to_vid(out_xbundle
, vlan
);
1529 if (list_is_empty(&out_xbundle
->xports
)) {
1530 /* Partially configured bundle with no slaves. Drop the packet. */
1532 } else if (!out_xbundle
->bond
) {
1533 ctx
->use_recirc
= false;
1534 xport
= CONTAINER_OF(list_front(&out_xbundle
->xports
), struct xport
,
1537 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1538 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
1539 struct xlate_recirc
*xr
= &ctx
->recirc
;
1540 struct ofport_dpif
*ofport
;
1542 if (ctx
->xbridge
->enable_recirc
) {
1543 ctx
->use_recirc
= bond_may_recirc(
1544 out_xbundle
->bond
, &xr
->recirc_id
, &xr
->hash_basis
);
1546 if (ctx
->use_recirc
) {
1547 /* Only TCP mode uses recirculation. */
1548 xr
->hash_alg
= OVS_HASH_ALG_L4
;
1549 bond_update_post_recirc_rules(out_xbundle
->bond
, false);
1551 /* Recirculation does not require unmasking hash fields. */
1556 ofport
= bond_choose_output_slave(out_xbundle
->bond
,
1557 &ctx
->xin
->flow
, wc
, vid
);
1558 xport
= xport_lookup(xcfg
, ofport
);
1561 /* No slaves enabled, so drop packet. */
1565 /* If ctx->xout->use_recirc is set, the main thread will handle stats
1566 * accounting for this bond. */
1567 if (!ctx
->use_recirc
) {
1568 if (ctx
->xin
->resubmit_stats
) {
1569 bond_account(out_xbundle
->bond
, &ctx
->xin
->flow
, vid
,
1570 ctx
->xin
->resubmit_stats
->n_bytes
);
1572 if (ctx
->xin
->xcache
) {
1573 struct xc_entry
*entry
;
1576 flow
= &ctx
->xin
->flow
;
1577 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_BOND
);
1578 entry
->u
.bond
.bond
= bond_ref(out_xbundle
->bond
);
1579 entry
->u
.bond
.flow
= xmemdup(flow
, sizeof *flow
);
1580 entry
->u
.bond
.vid
= vid
;
1585 old_tci
= *flow_tci
;
1587 if (tci
|| out_xbundle
->use_priority_tags
) {
1588 tci
|= *flow_tci
& htons(VLAN_PCP_MASK
);
1590 tci
|= htons(VLAN_CFI
);
1595 compose_output_action(ctx
, xport
->ofp_port
);
1596 *flow_tci
= old_tci
;
1599 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
1600 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
1601 * indicate this; newer upstream kernels use gratuitous ARP requests. */
1603 is_gratuitous_arp(const struct flow
*flow
, struct flow_wildcards
*wc
)
1605 if (flow
->dl_type
!= htons(ETH_TYPE_ARP
)) {
1609 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1610 if (!eth_addr_is_broadcast(flow
->dl_dst
)) {
1614 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
1615 if (flow
->nw_proto
== ARP_OP_REPLY
) {
1617 } else if (flow
->nw_proto
== ARP_OP_REQUEST
) {
1618 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
1619 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
1621 return flow
->nw_src
== flow
->nw_dst
;
1627 /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or
1628 * dropped. Returns true if they may be forwarded, false if they should be
1631 * 'in_port' must be the xport that corresponds to flow->in_port.
1632 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
1634 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
1635 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
1636 * checked by input_vid_is_valid().
1638 * May also add tags to '*tags', although the current implementation only does
1639 * so in one special case.
1642 is_admissible(struct xlate_ctx
*ctx
, struct xport
*in_port
,
1645 struct xbundle
*in_xbundle
= in_port
->xbundle
;
1646 const struct xbridge
*xbridge
= ctx
->xbridge
;
1647 struct flow
*flow
= &ctx
->xin
->flow
;
1649 /* Drop frames for reserved multicast addresses
1650 * only if forward_bpdu option is absent. */
1651 if (!xbridge
->forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
1652 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
1656 if (in_xbundle
->bond
) {
1657 struct mac_entry
*mac
;
1659 switch (bond_check_admissibility(in_xbundle
->bond
, in_port
->ofport
,
1665 xlate_report(ctx
, "bonding refused admissibility, dropping");
1668 case BV_DROP_IF_MOVED
:
1669 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
1670 mac
= mac_learning_lookup(xbridge
->ml
, flow
->dl_src
, vlan
);
1671 if (mac
&& mac
->port
.p
!= in_xbundle
->ofbundle
&&
1672 (!is_gratuitous_arp(flow
, &ctx
->xout
->wc
)
1673 || mac_entry_is_grat_arp_locked(mac
))) {
1674 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1675 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
1679 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1687 /* Checks whether a MAC learning update is necessary for MAC learning table
1688 * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in
1691 * Most packets processed through the MAC learning table do not actually
1692 * change it in any way. This function requires only a read lock on the MAC
1693 * learning table, so it is much cheaper in this common case.
1695 * Keep the code here synchronized with that in update_learning_table__()
1698 is_mac_learning_update_needed(const struct mac_learning
*ml
,
1699 const struct flow
*flow
,
1700 struct flow_wildcards
*wc
,
1701 int vlan
, struct xbundle
*in_xbundle
)
1702 OVS_REQ_RDLOCK(ml
->rwlock
)
1704 struct mac_entry
*mac
;
1706 if (!mac_learning_may_learn(ml
, flow
->dl_src
, vlan
)) {
1710 mac
= mac_learning_lookup(ml
, flow
->dl_src
, vlan
);
1711 if (!mac
|| mac_entry_age(ml
, mac
)) {
1715 if (is_gratuitous_arp(flow
, wc
)) {
1716 /* We don't want to learn from gratuitous ARP packets that are
1717 * reflected back over bond slaves so we lock the learning table. */
1718 if (!in_xbundle
->bond
) {
1720 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1725 return mac
->port
.p
!= in_xbundle
->ofbundle
;
1729 /* Updates MAC learning table 'ml' given that a packet matching 'flow' was
1730 * received on 'in_xbundle' in 'vlan'.
1732 * This code repeats all the checks in is_mac_learning_update_needed() because
1733 * the lock was released between there and here and thus the MAC learning state
1734 * could have changed.
1736 * Keep the code here synchronized with that in is_mac_learning_update_needed()
1739 update_learning_table__(const struct xbridge
*xbridge
,
1740 const struct flow
*flow
, struct flow_wildcards
*wc
,
1741 int vlan
, struct xbundle
*in_xbundle
)
1742 OVS_REQ_WRLOCK(xbridge
->ml
->rwlock
)
1744 struct mac_entry
*mac
;
1746 if (!mac_learning_may_learn(xbridge
->ml
, flow
->dl_src
, vlan
)) {
1750 mac
= mac_learning_insert(xbridge
->ml
, flow
->dl_src
, vlan
);
1751 if (is_gratuitous_arp(flow
, wc
)) {
1752 /* We don't want to learn from gratuitous ARP packets that are
1753 * reflected back over bond slaves so we lock the learning table. */
1754 if (!in_xbundle
->bond
) {
1755 mac_entry_set_grat_arp_lock(mac
);
1756 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1761 if (mac
->port
.p
!= in_xbundle
->ofbundle
) {
1762 /* The log messages here could actually be useful in debugging,
1763 * so keep the rate limit relatively high. */
1764 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
1766 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
1767 "on port %s in VLAN %d",
1768 xbridge
->name
, ETH_ADDR_ARGS(flow
->dl_src
),
1769 in_xbundle
->name
, vlan
);
1771 mac
->port
.p
= in_xbundle
->ofbundle
;
1772 mac_learning_changed(xbridge
->ml
);
1777 update_learning_table(const struct xbridge
*xbridge
,
1778 const struct flow
*flow
, struct flow_wildcards
*wc
,
1779 int vlan
, struct xbundle
*in_xbundle
)
1783 /* Don't learn the OFPP_NONE port. */
1784 if (in_xbundle
== &ofpp_none_bundle
) {
1788 /* First try the common case: no change to MAC learning table. */
1789 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
1790 need_update
= is_mac_learning_update_needed(xbridge
->ml
, flow
, wc
, vlan
,
1792 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1795 /* Slow path: MAC learning table might need an update. */
1796 ovs_rwlock_wrlock(&xbridge
->ml
->rwlock
);
1797 update_learning_table__(xbridge
, flow
, wc
, vlan
, in_xbundle
);
1798 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1803 xlate_normal_flood(struct xlate_ctx
*ctx
, struct xbundle
*in_xbundle
,
1806 struct xbundle
*xbundle
;
1808 LIST_FOR_EACH (xbundle
, list_node
, &ctx
->xbridge
->xbundles
) {
1809 if (xbundle
!= in_xbundle
1810 && xbundle_includes_vlan(xbundle
, vlan
)
1811 && xbundle
->floodable
1812 && !xbundle_mirror_out(ctx
->xbridge
, xbundle
)) {
1813 output_normal(ctx
, xbundle
, vlan
);
1816 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
1820 xlate_normal(struct xlate_ctx
*ctx
)
1822 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
1823 struct flow
*flow
= &ctx
->xin
->flow
;
1824 struct xbundle
*in_xbundle
;
1825 struct xport
*in_port
;
1826 struct mac_entry
*mac
;
1831 ctx
->xout
->has_normal
= true;
1833 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
1834 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1835 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
1837 in_xbundle
= lookup_input_bundle(ctx
->xbridge
, flow
->in_port
.ofp_port
,
1838 ctx
->xin
->packet
!= NULL
, &in_port
);
1840 xlate_report(ctx
, "no input bundle, dropping");
1844 /* Drop malformed frames. */
1845 if (flow
->dl_type
== htons(ETH_TYPE_VLAN
) &&
1846 !(flow
->vlan_tci
& htons(VLAN_CFI
))) {
1847 if (ctx
->xin
->packet
!= NULL
) {
1848 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1849 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
1850 "VLAN tag received on port %s",
1851 ctx
->xbridge
->name
, in_xbundle
->name
);
1853 xlate_report(ctx
, "partial VLAN tag, dropping");
1857 /* Drop frames on bundles reserved for mirroring. */
1858 if (xbundle_mirror_out(ctx
->xbridge
, in_xbundle
)) {
1859 if (ctx
->xin
->packet
!= NULL
) {
1860 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1861 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
1862 "%s, which is reserved exclusively for mirroring",
1863 ctx
->xbridge
->name
, in_xbundle
->name
);
1865 xlate_report(ctx
, "input port is mirror output port, dropping");
1870 vid
= vlan_tci_to_vid(flow
->vlan_tci
);
1871 if (!input_vid_is_valid(vid
, in_xbundle
, ctx
->xin
->packet
!= NULL
)) {
1872 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
1875 vlan
= input_vid_to_vlan(in_xbundle
, vid
);
1877 /* Check other admissibility requirements. */
1878 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
1882 /* Learn source MAC. */
1883 if (ctx
->xin
->may_learn
) {
1884 update_learning_table(ctx
->xbridge
, flow
, wc
, vlan
, in_xbundle
);
1886 if (ctx
->xin
->xcache
) {
1887 struct xc_entry
*entry
;
1889 /* Save enough info to update mac learning table later. */
1890 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NORMAL
);
1891 entry
->u
.normal
.ofproto
= ctx
->xbridge
->ofproto
;
1892 entry
->u
.normal
.flow
= xmemdup(flow
, sizeof *flow
);
1893 entry
->u
.normal
.vlan
= vlan
;
1896 /* Determine output bundle. */
1897 ovs_rwlock_rdlock(&ctx
->xbridge
->ml
->rwlock
);
1898 mac
= mac_learning_lookup(ctx
->xbridge
->ml
, flow
->dl_dst
, vlan
);
1899 mac_port
= mac
? mac
->port
.p
: NULL
;
1900 ovs_rwlock_unlock(&ctx
->xbridge
->ml
->rwlock
);
1903 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1904 struct xbundle
*mac_xbundle
= xbundle_lookup(xcfg
, mac_port
);
1905 if (mac_xbundle
&& mac_xbundle
!= in_xbundle
) {
1906 xlate_report(ctx
, "forwarding to learned port");
1907 output_normal(ctx
, mac_xbundle
, vlan
);
1908 } else if (!mac_xbundle
) {
1909 xlate_report(ctx
, "learned port is unknown, dropping");
1911 xlate_report(ctx
, "learned port is input port, dropping");
1914 xlate_report(ctx
, "no learned MAC for destination, flooding");
1915 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
1919 /* Compose SAMPLE action for sFlow or IPFIX. The given probability is
1920 * the number of packets out of UINT32_MAX to sample. The given
1921 * cookie is passed back in the callback for each sampled packet.
1924 compose_sample_action(const struct xbridge
*xbridge
,
1925 struct ofpbuf
*odp_actions
,
1926 const struct flow
*flow
,
1927 const uint32_t probability
,
1928 const union user_action_cookie
*cookie
,
1929 const size_t cookie_size
)
1931 size_t sample_offset
, actions_offset
;
1932 odp_port_t odp_port
;
1936 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
1938 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
1940 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
1942 odp_port
= ofp_port_to_odp_port(xbridge
, flow
->in_port
.ofp_port
);
1943 pid
= dpif_port_get_pid(xbridge
->dpif
, odp_port
,
1944 flow_hash_5tuple(flow
, 0));
1945 cookie_offset
= odp_put_userspace_action(pid
, cookie
, cookie_size
,
1948 nl_msg_end_nested(odp_actions
, actions_offset
);
1949 nl_msg_end_nested(odp_actions
, sample_offset
);
1950 return cookie_offset
;
1954 compose_sflow_cookie(const struct xbridge
*xbridge
, ovs_be16 vlan_tci
,
1955 odp_port_t odp_port
, unsigned int n_outputs
,
1956 union user_action_cookie
*cookie
)
1960 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
1961 cookie
->sflow
.vlan_tci
= vlan_tci
;
1963 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
1964 * port information") for the interpretation of cookie->output. */
1965 switch (n_outputs
) {
1967 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
1968 cookie
->sflow
.output
= 0x40000000 | 256;
1972 ifindex
= dpif_sflow_odp_port_to_ifindex(xbridge
->sflow
, odp_port
);
1974 cookie
->sflow
.output
= ifindex
;
1979 /* 0x80000000 means "multiple output ports. */
1980 cookie
->sflow
.output
= 0x80000000 | n_outputs
;
1985 /* Compose SAMPLE action for sFlow bridge sampling. */
1987 compose_sflow_action(const struct xbridge
*xbridge
,
1988 struct ofpbuf
*odp_actions
,
1989 const struct flow
*flow
,
1990 odp_port_t odp_port
)
1992 uint32_t probability
;
1993 union user_action_cookie cookie
;
1995 if (!xbridge
->sflow
|| flow
->in_port
.ofp_port
== OFPP_NONE
) {
1999 probability
= dpif_sflow_get_probability(xbridge
->sflow
);
2000 compose_sflow_cookie(xbridge
, htons(0), odp_port
,
2001 odp_port
== ODPP_NONE
? 0 : 1, &cookie
);
2003 return compose_sample_action(xbridge
, odp_actions
, flow
, probability
,
2004 &cookie
, sizeof cookie
.sflow
);
2008 compose_flow_sample_cookie(uint16_t probability
, uint32_t collector_set_id
,
2009 uint32_t obs_domain_id
, uint32_t obs_point_id
,
2010 union user_action_cookie
*cookie
)
2012 cookie
->type
= USER_ACTION_COOKIE_FLOW_SAMPLE
;
2013 cookie
->flow_sample
.probability
= probability
;
2014 cookie
->flow_sample
.collector_set_id
= collector_set_id
;
2015 cookie
->flow_sample
.obs_domain_id
= obs_domain_id
;
2016 cookie
->flow_sample
.obs_point_id
= obs_point_id
;
2020 compose_ipfix_cookie(union user_action_cookie
*cookie
)
2022 cookie
->type
= USER_ACTION_COOKIE_IPFIX
;
2025 /* Compose SAMPLE action for IPFIX bridge sampling. */
2027 compose_ipfix_action(const struct xbridge
*xbridge
,
2028 struct ofpbuf
*odp_actions
,
2029 const struct flow
*flow
)
2031 uint32_t probability
;
2032 union user_action_cookie cookie
;
2034 if (!xbridge
->ipfix
|| flow
->in_port
.ofp_port
== OFPP_NONE
) {
2038 probability
= dpif_ipfix_get_bridge_exporter_probability(xbridge
->ipfix
);
2039 compose_ipfix_cookie(&cookie
);
2041 compose_sample_action(xbridge
, odp_actions
, flow
, probability
,
2042 &cookie
, sizeof cookie
.ipfix
);
2045 /* SAMPLE action for sFlow must be first action in any given list of
2046 * actions. At this point we do not have all information required to
2047 * build it. So try to build sample action as complete as possible. */
2049 add_sflow_action(struct xlate_ctx
*ctx
)
2051 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->xbridge
,
2052 &ctx
->xout
->odp_actions
,
2053 &ctx
->xin
->flow
, ODPP_NONE
);
2054 ctx
->sflow_odp_port
= 0;
2055 ctx
->sflow_n_outputs
= 0;
2058 /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list
2059 * of actions, eventually after the SAMPLE action for sFlow. */
2061 add_ipfix_action(struct xlate_ctx
*ctx
)
2063 compose_ipfix_action(ctx
->xbridge
, &ctx
->xout
->odp_actions
,
2067 /* Fix SAMPLE action according to data collected while composing ODP actions.
2068 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
2069 * USERSPACE action's user-cookie which is required for sflow. */
2071 fix_sflow_action(struct xlate_ctx
*ctx
)
2073 const struct flow
*base
= &ctx
->base_flow
;
2074 union user_action_cookie
*cookie
;
2076 if (!ctx
->user_cookie_offset
) {
2080 cookie
= ofpbuf_at(&ctx
->xout
->odp_actions
, ctx
->user_cookie_offset
,
2081 sizeof cookie
->sflow
);
2082 ovs_assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
2084 compose_sflow_cookie(ctx
->xbridge
, base
->vlan_tci
,
2085 ctx
->sflow_odp_port
, ctx
->sflow_n_outputs
, cookie
);
2088 static enum slow_path_reason
2089 process_special(struct xlate_ctx
*ctx
, const struct flow
*flow
,
2090 const struct xport
*xport
, const struct ofpbuf
*packet
)
2092 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2093 const struct xbridge
*xbridge
= ctx
->xbridge
;
2097 } else if (xport
->cfm
&& cfm_should_process_flow(xport
->cfm
, flow
, wc
)) {
2099 cfm_process_heartbeat(xport
->cfm
, packet
);
2102 } else if (xport
->bfd
&& bfd_should_process_flow(xport
->bfd
, flow
, wc
)) {
2104 bfd_process_packet(xport
->bfd
, flow
, packet
);
2105 /* If POLL received, immediately sends FINAL back. */
2106 if (bfd_should_send_packet(xport
->bfd
)) {
2107 ofproto_dpif_monitor_port_send_soon(xport
->ofport
);
2111 } else if (xport
->xbundle
&& xport
->xbundle
->lacp
2112 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
2114 lacp_process_packet(xport
->xbundle
->lacp
, xport
->ofport
, packet
);
2117 } else if (xbridge
->stp
&& stp_should_process_flow(flow
, wc
)) {
2119 stp_process_packet(xport
, packet
);
2128 compose_output_action__(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
,
2131 const struct xport
*xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
2132 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2133 struct flow
*flow
= &ctx
->xin
->flow
;
2134 ovs_be16 flow_vlan_tci
;
2135 uint32_t flow_pkt_mark
;
2136 uint8_t flow_nw_tos
;
2137 odp_port_t out_port
, odp_port
;
2140 /* If 'struct flow' gets additional metadata, we'll need to zero it out
2141 * before traversing a patch port. */
2142 BUILD_ASSERT_DECL(FLOW_WC_SEQ
== 26);
2145 xlate_report(ctx
, "Nonexistent output port");
2147 } else if (xport
->config
& OFPUTIL_PC_NO_FWD
) {
2148 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
2150 } else if (check_stp
) {
2151 if (is_stp(&ctx
->base_flow
)) {
2152 if (!xport_stp_listen_state(xport
)) {
2153 xlate_report(ctx
, "STP not in listening state, "
2154 "skipping bpdu output");
2157 } else if (!xport_stp_forward_state(xport
)) {
2158 xlate_report(ctx
, "STP not in forwarding state, "
2164 if (mbridge_has_mirrors(ctx
->xbridge
->mbridge
) && xport
->xbundle
) {
2165 ctx
->xout
->mirrors
|= xbundle_mirror_dst(xport
->xbundle
->xbridge
,
2170 const struct xport
*peer
= xport
->peer
;
2171 struct flow old_flow
= ctx
->xin
->flow
;
2172 enum slow_path_reason special
;
2174 ctx
->xbridge
= peer
->xbridge
;
2175 flow
->in_port
.ofp_port
= peer
->ofp_port
;
2176 flow
->metadata
= htonll(0);
2177 memset(&flow
->tunnel
, 0, sizeof flow
->tunnel
);
2178 memset(flow
->regs
, 0, sizeof flow
->regs
);
2180 special
= process_special(ctx
, &ctx
->xin
->flow
, peer
,
2183 ctx
->xout
->slow
|= special
;
2184 } else if (may_receive(peer
, ctx
)) {
2185 if (xport_stp_forward_state(peer
)) {
2186 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2188 /* Forwarding is disabled by STP. Let OFPP_NORMAL and the
2189 * learning action look at the packet, then drop it. */
2190 struct flow old_base_flow
= ctx
->base_flow
;
2191 size_t old_size
= ofpbuf_size(&ctx
->xout
->odp_actions
);
2192 mirror_mask_t old_mirrors
= ctx
->xout
->mirrors
;
2193 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2194 ctx
->xout
->mirrors
= old_mirrors
;
2195 ctx
->base_flow
= old_base_flow
;
2196 ofpbuf_set_size(&ctx
->xout
->odp_actions
, old_size
);
2200 ctx
->xin
->flow
= old_flow
;
2201 ctx
->xbridge
= xport
->xbridge
;
2203 if (ctx
->xin
->resubmit_stats
) {
2204 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2205 netdev_vport_inc_rx(peer
->netdev
, ctx
->xin
->resubmit_stats
);
2207 bfd_account_rx(peer
->bfd
, ctx
->xin
->resubmit_stats
);
2210 if (ctx
->xin
->xcache
) {
2211 struct xc_entry
*entry
;
2213 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
2214 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
2215 entry
->u
.dev
.rx
= netdev_ref(peer
->netdev
);
2216 entry
->u
.dev
.bfd
= bfd_ref(peer
->bfd
);
2221 flow_vlan_tci
= flow
->vlan_tci
;
2222 flow_pkt_mark
= flow
->pkt_mark
;
2223 flow_nw_tos
= flow
->nw_tos
;
2225 if (dscp_from_skb_priority(xport
, flow
->skb_priority
, &dscp
)) {
2226 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
2227 flow
->nw_tos
&= ~IP_DSCP_MASK
;
2228 flow
->nw_tos
|= dscp
;
2231 if (xport
->is_tunnel
) {
2232 /* Save tunnel metadata so that changes made due to
2233 * the Logical (tunnel) Port are not visible for any further
2234 * matches, while explicit set actions on tunnel metadata are.
2236 struct flow_tnl flow_tnl
= flow
->tunnel
;
2237 odp_port
= tnl_port_send(xport
->ofport
, flow
, &ctx
->xout
->wc
);
2238 if (odp_port
== ODPP_NONE
) {
2239 xlate_report(ctx
, "Tunneling decided against output");
2240 goto out
; /* restore flow_nw_tos */
2242 if (flow
->tunnel
.ip_dst
== ctx
->orig_tunnel_ip_dst
) {
2243 xlate_report(ctx
, "Not tunneling to our own address");
2244 goto out
; /* restore flow_nw_tos */
2246 if (ctx
->xin
->resubmit_stats
) {
2247 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2249 if (ctx
->xin
->xcache
) {
2250 struct xc_entry
*entry
;
2252 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
2253 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
2255 out_port
= odp_port
;
2256 commit_odp_tunnel_action(flow
, &ctx
->base_flow
,
2257 &ctx
->xout
->odp_actions
);
2258 flow
->tunnel
= flow_tnl
; /* Restore tunnel metadata */
2260 odp_port
= xport
->odp_port
;
2261 out_port
= odp_port
;
2262 if (ofproto_has_vlan_splinters(ctx
->xbridge
->ofproto
)) {
2263 ofp_port_t vlandev_port
;
2265 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
2266 vlandev_port
= vsp_realdev_to_vlandev(ctx
->xbridge
->ofproto
,
2267 ofp_port
, flow
->vlan_tci
);
2268 if (vlandev_port
!= ofp_port
) {
2269 out_port
= ofp_port_to_odp_port(ctx
->xbridge
, vlandev_port
);
2270 flow
->vlan_tci
= htons(0);
2275 if (out_port
!= ODPP_NONE
) {
2276 ctx
->xout
->slow
|= commit_odp_actions(flow
, &ctx
->base_flow
,
2277 &ctx
->xout
->odp_actions
,
2280 if (ctx
->use_recirc
) {
2281 struct ovs_action_hash
*act_hash
;
2282 struct xlate_recirc
*xr
= &ctx
->recirc
;
2285 act_hash
= nl_msg_put_unspec_uninit(&ctx
->xout
->odp_actions
,
2286 OVS_ACTION_ATTR_HASH
,
2288 act_hash
->hash_alg
= xr
->hash_alg
;
2289 act_hash
->hash_basis
= xr
->hash_basis
;
2291 /* Recirc action. */
2292 nl_msg_put_u32(&ctx
->xout
->odp_actions
, OVS_ACTION_ATTR_RECIRC
,
2295 nl_msg_put_odp_port(&ctx
->xout
->odp_actions
, OVS_ACTION_ATTR_OUTPUT
,
2299 ctx
->sflow_odp_port
= odp_port
;
2300 ctx
->sflow_n_outputs
++;
2301 ctx
->xout
->nf_output_iface
= ofp_port
;
2306 flow
->vlan_tci
= flow_vlan_tci
;
2307 flow
->pkt_mark
= flow_pkt_mark
;
2308 flow
->nw_tos
= flow_nw_tos
;
2312 compose_output_action(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
)
2314 compose_output_action__(ctx
, ofp_port
, true);
2318 xlate_recursively(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
)
2320 struct rule_dpif
*old_rule
= ctx
->rule
;
2321 const struct rule_actions
*actions
;
2323 if (ctx
->xin
->resubmit_stats
) {
2324 rule_dpif_credit_stats(rule
, ctx
->xin
->resubmit_stats
);
2330 actions
= rule_dpif_get_actions(rule
);
2331 do_xlate_actions(actions
->ofpacts
, actions
->ofpacts_len
, ctx
);
2332 ctx
->rule
= old_rule
;
2337 xlate_resubmit_resource_check(struct xlate_ctx
*ctx
)
2339 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2341 if (ctx
->recurse
>= MAX_RESUBMIT_RECURSION
+ MAX_INTERNAL_RESUBMITS
) {
2342 VLOG_ERR_RL(&rl
, "resubmit actions recursed over %d times",
2343 MAX_RESUBMIT_RECURSION
);
2344 } else if (ctx
->resubmits
>= MAX_RESUBMITS
+ MAX_INTERNAL_RESUBMITS
) {
2345 VLOG_ERR_RL(&rl
, "over %d resubmit actions", MAX_RESUBMITS
);
2346 } else if (ofpbuf_size(&ctx
->xout
->odp_actions
) > UINT16_MAX
) {
2347 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of actions");
2348 } else if (ofpbuf_size(&ctx
->stack
) >= 65536) {
2349 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of stack");
2358 xlate_table_action(struct xlate_ctx
*ctx
, ofp_port_t in_port
, uint8_t table_id
,
2359 bool may_packet_in
, bool honor_table_miss
)
2361 if (xlate_resubmit_resource_check(ctx
)) {
2362 ofp_port_t old_in_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
2363 bool skip_wildcards
= ctx
->xin
->skip_wildcards
;
2364 uint8_t old_table_id
= ctx
->table_id
;
2365 struct rule_dpif
*rule
;
2366 enum rule_dpif_lookup_verdict verdict
;
2367 enum ofputil_port_config config
= 0;
2369 ctx
->table_id
= table_id
;
2371 /* Look up a flow with 'in_port' as the input port. Then restore the
2372 * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
2373 * have surprising behavior). */
2374 ctx
->xin
->flow
.in_port
.ofp_port
= in_port
;
2375 verdict
= rule_dpif_lookup_from_table(ctx
->xbridge
->ofproto
,
2378 ? &ctx
->xout
->wc
: NULL
,
2380 &ctx
->table_id
, &rule
,
2381 ctx
->xin
->xcache
!= NULL
,
2382 ctx
->xin
->resubmit_stats
);
2383 ctx
->xin
->flow
.in_port
.ofp_port
= old_in_port
;
2385 if (ctx
->xin
->resubmit_hook
) {
2386 ctx
->xin
->resubmit_hook(ctx
->xin
, rule
, ctx
->recurse
);
2390 case RULE_DPIF_LOOKUP_VERDICT_MATCH
:
2392 case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER
:
2393 if (may_packet_in
) {
2394 struct xport
*xport
;
2396 xport
= get_ofp_port(ctx
->xbridge
,
2397 ctx
->xin
->flow
.in_port
.ofp_port
);
2398 config
= xport
? xport
->config
: 0;
2401 /* Fall through to drop */
2402 case RULE_DPIF_LOOKUP_VERDICT_DROP
:
2403 config
= OFPUTIL_PC_NO_PACKET_IN
;
2405 case RULE_DPIF_LOOKUP_VERDICT_DEFAULT
:
2406 if (!ofproto_dpif_wants_packet_in_on_miss(ctx
->xbridge
->ofproto
)) {
2407 config
= OFPUTIL_PC_NO_PACKET_IN
;
2414 choose_miss_rule(config
, ctx
->xbridge
->miss_rule
,
2415 ctx
->xbridge
->no_packet_in_rule
, &rule
,
2416 ctx
->xin
->xcache
!= NULL
);
2420 /* Fill in the cache entry here instead of xlate_recursively
2421 * to make the reference counting more explicit. We take a
2422 * reference in the lookups above if we are going to cache the
2424 if (ctx
->xin
->xcache
) {
2425 struct xc_entry
*entry
;
2427 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_RULE
);
2428 entry
->u
.rule
= rule
;
2430 xlate_recursively(ctx
, rule
);
2433 ctx
->table_id
= old_table_id
;
2441 xlate_group_stats(struct xlate_ctx
*ctx
, struct group_dpif
*group
,
2442 struct ofputil_bucket
*bucket
)
2444 if (ctx
->xin
->resubmit_stats
) {
2445 group_dpif_credit_stats(group
, bucket
, ctx
->xin
->resubmit_stats
);
2447 if (ctx
->xin
->xcache
) {
2448 struct xc_entry
*entry
;
2450 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_GROUP
);
2451 entry
->u
.group
.group
= group_dpif_ref(group
);
2452 entry
->u
.group
.bucket
= bucket
;
2457 xlate_group_bucket(struct xlate_ctx
*ctx
, struct ofputil_bucket
*bucket
)
2459 uint64_t action_list_stub
[1024 / 8];
2460 struct ofpbuf action_list
, action_set
;
2462 ofpbuf_use_const(&action_set
, bucket
->ofpacts
, bucket
->ofpacts_len
);
2463 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
2465 ofpacts_execute_action_set(&action_list
, &action_set
);
2467 do_xlate_actions(ofpbuf_data(&action_list
), ofpbuf_size(&action_list
), ctx
);
2470 ofpbuf_uninit(&action_set
);
2471 ofpbuf_uninit(&action_list
);
2475 xlate_all_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2477 struct ofputil_bucket
*bucket
;
2478 const struct list
*buckets
;
2479 struct flow old_flow
= ctx
->xin
->flow
;
2481 group_dpif_get_buckets(group
, &buckets
);
2483 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
2484 xlate_group_bucket(ctx
, bucket
);
2485 /* Roll back flow to previous state.
2486 * This is equivalent to cloning the packet for each bucket.
2488 * As a side effect any subsequently applied actions will
2489 * also effectively be applied to a clone of the packet taken
2490 * just before applying the all or indirect group. */
2491 ctx
->xin
->flow
= old_flow
;
2493 xlate_group_stats(ctx
, group
, NULL
);
2497 xlate_ff_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2499 struct ofputil_bucket
*bucket
;
2501 bucket
= group_first_live_bucket(ctx
, group
, 0);
2503 xlate_group_bucket(ctx
, bucket
);
2504 xlate_group_stats(ctx
, group
, bucket
);
2509 xlate_select_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2511 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2512 struct ofputil_bucket
*bucket
;
2515 basis
= hash_mac(ctx
->xin
->flow
.dl_dst
, 0, 0);
2516 bucket
= group_best_live_bucket(ctx
, group
, basis
);
2518 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
2519 xlate_group_bucket(ctx
, bucket
);
2520 xlate_group_stats(ctx
, group
, bucket
);
2525 xlate_group_action__(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2527 ctx
->in_group
= true;
2529 switch (group_dpif_get_type(group
)) {
2531 case OFPGT11_INDIRECT
:
2532 xlate_all_group(ctx
, group
);
2534 case OFPGT11_SELECT
:
2535 xlate_select_group(ctx
, group
);
2538 xlate_ff_group(ctx
, group
);
2543 group_dpif_unref(group
);
2545 ctx
->in_group
= false;
2549 xlate_group_resource_check(struct xlate_ctx
*ctx
)
2551 if (!xlate_resubmit_resource_check(ctx
)) {
2553 } else if (ctx
->in_group
) {
2554 /* Prevent nested translation of OpenFlow groups.
2556 * OpenFlow allows this restriction. We enforce this restriction only
2557 * because, with the current architecture, we would otherwise have to
2558 * take a possibly recursive read lock on the ofgroup rwlock, which is
2559 * unsafe given that POSIX allows taking a read lock to block if there
2560 * is a thread blocked on taking the write lock. Other solutions
2561 * without this restriction are also possible, but seem unwarranted
2562 * given the current limited use of groups. */
2563 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2565 VLOG_ERR_RL(&rl
, "cannot recursively translate OpenFlow group");
2573 xlate_group_action(struct xlate_ctx
*ctx
, uint32_t group_id
)
2575 if (xlate_group_resource_check(ctx
)) {
2576 struct group_dpif
*group
;
2579 got_group
= group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
);
2581 xlate_group_action__(ctx
, group
);
2591 xlate_ofpact_resubmit(struct xlate_ctx
*ctx
,
2592 const struct ofpact_resubmit
*resubmit
)
2596 bool may_packet_in
= false;
2597 bool honor_table_miss
= false;
2599 if (ctx
->rule
&& rule_dpif_is_internal(ctx
->rule
)) {
2600 /* Still allow missed packets to be sent to the controller
2601 * if resubmitting from an internal table. */
2602 may_packet_in
= true;
2603 honor_table_miss
= true;
2606 in_port
= resubmit
->in_port
;
2607 if (in_port
== OFPP_IN_PORT
) {
2608 in_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
2611 table_id
= resubmit
->table_id
;
2612 if (table_id
== 255) {
2613 table_id
= ctx
->table_id
;
2616 xlate_table_action(ctx
, in_port
, table_id
, may_packet_in
,
2621 flood_packets(struct xlate_ctx
*ctx
, bool all
)
2623 const struct xport
*xport
;
2625 HMAP_FOR_EACH (xport
, ofp_node
, &ctx
->xbridge
->xports
) {
2626 if (xport
->ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
2631 compose_output_action__(ctx
, xport
->ofp_port
, false);
2632 } else if (!(xport
->config
& OFPUTIL_PC_NO_FLOOD
)) {
2633 compose_output_action(ctx
, xport
->ofp_port
);
2637 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
2641 execute_controller_action(struct xlate_ctx
*ctx
, int len
,
2642 enum ofp_packet_in_reason reason
,
2643 uint16_t controller_id
)
2645 struct ofproto_packet_in
*pin
;
2646 struct ofpbuf
*packet
;
2647 struct pkt_metadata md
= PKT_METADATA_INITIALIZER(0);
2649 ctx
->xout
->slow
|= SLOW_CONTROLLER
;
2650 if (!ctx
->xin
->packet
) {
2654 packet
= ofpbuf_clone(ctx
->xin
->packet
);
2656 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
2657 &ctx
->xout
->odp_actions
,
2660 odp_execute_actions(NULL
, packet
, false, &md
,
2661 ofpbuf_data(&ctx
->xout
->odp_actions
),
2662 ofpbuf_size(&ctx
->xout
->odp_actions
), NULL
);
2664 pin
= xmalloc(sizeof *pin
);
2665 pin
->up
.packet_len
= ofpbuf_size(packet
);
2666 pin
->up
.packet
= ofpbuf_steal_data(packet
);
2667 pin
->up
.reason
= reason
;
2668 pin
->up
.table_id
= ctx
->table_id
;
2669 pin
->up
.cookie
= (ctx
->rule
2670 ? rule_dpif_get_flow_cookie(ctx
->rule
)
2673 flow_get_metadata(&ctx
->xin
->flow
, &pin
->up
.fmd
);
2675 pin
->controller_id
= controller_id
;
2676 pin
->send_len
= len
;
2677 /* If a rule is a table-miss rule then this is
2678 * a table-miss handled by a table-miss rule.
2680 * Else, if rule is internal and has a controller action,
2681 * the later being implied by the rule being processed here,
2682 * then this is a table-miss handled without a table-miss rule.
2684 * Otherwise this is not a table-miss. */
2685 pin
->miss_type
= OFPROTO_PACKET_IN_NO_MISS
;
2687 if (rule_dpif_is_table_miss(ctx
->rule
)) {
2688 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_FLOW
;
2689 } else if (rule_dpif_is_internal(ctx
->rule
)) {
2690 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW
;
2693 ofproto_dpif_send_packet_in(ctx
->xbridge
->ofproto
, pin
);
2694 ofpbuf_delete(packet
);
2698 compose_mpls_push_action(struct xlate_ctx
*ctx
, struct ofpact_push_mpls
*mpls
)
2700 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2701 struct flow
*flow
= &ctx
->xin
->flow
;
2704 ovs_assert(eth_type_mpls(mpls
->ethertype
));
2706 n
= flow_count_mpls_labels(flow
, wc
);
2708 ctx
->xout
->slow
|= commit_odp_actions(flow
, &ctx
->base_flow
,
2709 &ctx
->xout
->odp_actions
,
2711 } else if (n
>= FLOW_MAX_MPLS_LABELS
) {
2712 if (ctx
->xin
->packet
!= NULL
) {
2713 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2714 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
2715 "MPLS push action can't be performed as it would "
2716 "have more MPLS LSEs than the %d supported.",
2717 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
2721 } else if (n
>= ctx
->xbridge
->max_mpls_depth
) {
2722 COVERAGE_INC(xlate_actions_mpls_overflow
);
2723 ctx
->xout
->slow
|= SLOW_ACTION
;
2726 flow_push_mpls(flow
, n
, mpls
->ethertype
, wc
);
2730 compose_mpls_pop_action(struct xlate_ctx
*ctx
, ovs_be16 eth_type
)
2732 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2733 struct flow
*flow
= &ctx
->xin
->flow
;
2734 int n
= flow_count_mpls_labels(flow
, wc
);
2736 if (!flow_pop_mpls(flow
, n
, eth_type
, wc
) && n
>= FLOW_MAX_MPLS_LABELS
) {
2737 if (ctx
->xin
->packet
!= NULL
) {
2738 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2739 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
2740 "MPLS pop action can't be performed as it has "
2741 "more MPLS LSEs than the %d supported.",
2742 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
2745 ofpbuf_clear(&ctx
->xout
->odp_actions
);
2750 compose_dec_ttl(struct xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
2752 struct flow
*flow
= &ctx
->xin
->flow
;
2754 if (!is_ip_any(flow
)) {
2758 ctx
->xout
->wc
.masks
.nw_ttl
= 0xff;
2759 if (flow
->nw_ttl
> 1) {
2765 for (i
= 0; i
< ids
->n_controllers
; i
++) {
2766 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
2770 /* Stop processing for current table. */
2776 compose_set_mpls_label_action(struct xlate_ctx
*ctx
, ovs_be32 label
)
2778 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
2779 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_LABEL_MASK
);
2780 set_mpls_lse_label(&ctx
->xin
->flow
.mpls_lse
[0], label
);
2785 compose_set_mpls_tc_action(struct xlate_ctx
*ctx
, uint8_t tc
)
2787 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
2788 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_TC_MASK
);
2789 set_mpls_lse_tc(&ctx
->xin
->flow
.mpls_lse
[0], tc
);
2794 compose_set_mpls_ttl_action(struct xlate_ctx
*ctx
, uint8_t ttl
)
2796 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
2797 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_TTL_MASK
);
2798 set_mpls_lse_ttl(&ctx
->xin
->flow
.mpls_lse
[0], ttl
);
2803 compose_dec_mpls_ttl_action(struct xlate_ctx
*ctx
)
2805 struct flow
*flow
= &ctx
->xin
->flow
;
2806 uint8_t ttl
= mpls_lse_to_ttl(flow
->mpls_lse
[0]);
2807 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2809 memset(&wc
->masks
.mpls_lse
, 0xff, sizeof wc
->masks
.mpls_lse
);
2810 if (eth_type_mpls(flow
->dl_type
)) {
2813 set_mpls_lse_ttl(&flow
->mpls_lse
[0], ttl
);
2816 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
2818 /* Stop processing for current table. */
2827 xlate_output_action(struct xlate_ctx
*ctx
,
2828 ofp_port_t port
, uint16_t max_len
, bool may_packet_in
)
2830 ofp_port_t prev_nf_output_iface
= ctx
->xout
->nf_output_iface
;
2832 ctx
->xout
->nf_output_iface
= NF_OUT_DROP
;
2836 compose_output_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
);
2839 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
2840 0, may_packet_in
, true);
2846 flood_packets(ctx
, false);
2849 flood_packets(ctx
, true);
2851 case OFPP_CONTROLLER
:
2852 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
2858 if (port
!= ctx
->xin
->flow
.in_port
.ofp_port
) {
2859 compose_output_action(ctx
, port
);
2861 xlate_report(ctx
, "skipping output to input port");
2866 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
2867 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
2868 } else if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
2869 ctx
->xout
->nf_output_iface
= prev_nf_output_iface
;
2870 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
2871 ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
2872 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
2877 xlate_output_reg_action(struct xlate_ctx
*ctx
,
2878 const struct ofpact_output_reg
*or)
2880 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->xin
->flow
);
2881 if (port
<= UINT16_MAX
) {
2882 union mf_subvalue value
;
2884 memset(&value
, 0xff, sizeof value
);
2885 mf_write_subfield_flow(&or->src
, &value
, &ctx
->xout
->wc
.masks
);
2886 xlate_output_action(ctx
, u16_to_ofp(port
),
2887 or->max_len
, false);
2892 xlate_enqueue_action(struct xlate_ctx
*ctx
,
2893 const struct ofpact_enqueue
*enqueue
)
2895 ofp_port_t ofp_port
= enqueue
->port
;
2896 uint32_t queue_id
= enqueue
->queue
;
2897 uint32_t flow_priority
, priority
;
2900 /* Translate queue to priority. */
2901 error
= dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &priority
);
2903 /* Fall back to ordinary output action. */
2904 xlate_output_action(ctx
, enqueue
->port
, 0, false);
2908 /* Check output port. */
2909 if (ofp_port
== OFPP_IN_PORT
) {
2910 ofp_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
2911 } else if (ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
2915 /* Add datapath actions. */
2916 flow_priority
= ctx
->xin
->flow
.skb_priority
;
2917 ctx
->xin
->flow
.skb_priority
= priority
;
2918 compose_output_action(ctx
, ofp_port
);
2919 ctx
->xin
->flow
.skb_priority
= flow_priority
;
2921 /* Update NetFlow output port. */
2922 if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
2923 ctx
->xout
->nf_output_iface
= ofp_port
;
2924 } else if (ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
2925 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
2930 xlate_set_queue_action(struct xlate_ctx
*ctx
, uint32_t queue_id
)
2932 uint32_t skb_priority
;
2934 if (!dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &skb_priority
)) {
2935 ctx
->xin
->flow
.skb_priority
= skb_priority
;
2937 /* Couldn't translate queue to a priority. Nothing to do. A warning
2938 * has already been logged. */
2943 slave_enabled_cb(ofp_port_t ofp_port
, void *xbridge_
)
2945 const struct xbridge
*xbridge
= xbridge_
;
2956 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
2959 port
= get_ofp_port(xbridge
, ofp_port
);
2960 return port
? port
->may_enable
: false;
2965 xlate_bundle_action(struct xlate_ctx
*ctx
,
2966 const struct ofpact_bundle
*bundle
)
2970 port
= bundle_execute(bundle
, &ctx
->xin
->flow
, &ctx
->xout
->wc
,
2972 CONST_CAST(struct xbridge
*, ctx
->xbridge
));
2973 if (bundle
->dst
.field
) {
2974 nxm_reg_load(&bundle
->dst
, ofp_to_u16(port
), &ctx
->xin
->flow
,
2977 xlate_output_action(ctx
, port
, 0, false);
2982 xlate_learn_action__(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
,
2983 struct ofputil_flow_mod
*fm
, struct ofpbuf
*ofpacts
)
2985 learn_execute(learn
, &ctx
->xin
->flow
, fm
, ofpacts
);
2986 if (ctx
->xin
->may_learn
) {
2987 ofproto_dpif_flow_mod(ctx
->xbridge
->ofproto
, fm
);
2992 xlate_learn_action(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
)
2994 ctx
->xout
->has_learn
= true;
2995 learn_mask(learn
, &ctx
->xout
->wc
);
2997 if (ctx
->xin
->xcache
) {
2998 struct xc_entry
*entry
;
3000 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_LEARN
);
3001 entry
->u
.learn
.ofproto
= ctx
->xbridge
->ofproto
;
3002 entry
->u
.learn
.fm
= xmalloc(sizeof *entry
->u
.learn
.fm
);
3003 entry
->u
.learn
.ofpacts
= ofpbuf_new(64);
3004 xlate_learn_action__(ctx
, learn
, entry
->u
.learn
.fm
,
3005 entry
->u
.learn
.ofpacts
);
3006 } else if (ctx
->xin
->may_learn
) {
3007 uint64_t ofpacts_stub
[1024 / 8];
3008 struct ofputil_flow_mod fm
;
3009 struct ofpbuf ofpacts
;
3011 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3012 xlate_learn_action__(ctx
, learn
, &fm
, &ofpacts
);
3013 ofpbuf_uninit(&ofpacts
);
3018 xlate_fin_timeout__(struct rule_dpif
*rule
, uint16_t tcp_flags
,
3019 uint16_t idle_timeout
, uint16_t hard_timeout
)
3021 if (tcp_flags
& (TCP_FIN
| TCP_RST
)) {
3022 rule_dpif_reduce_timeouts(rule
, idle_timeout
, hard_timeout
);
3027 xlate_fin_timeout(struct xlate_ctx
*ctx
,
3028 const struct ofpact_fin_timeout
*oft
)
3031 xlate_fin_timeout__(ctx
->rule
, ctx
->xin
->tcp_flags
,
3032 oft
->fin_idle_timeout
, oft
->fin_hard_timeout
);
3033 if (ctx
->xin
->xcache
) {
3034 struct xc_entry
*entry
;
3036 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_FIN_TIMEOUT
);
3037 /* XC_RULE already holds a reference on the rule, none is taken
3039 entry
->u
.fin
.rule
= ctx
->rule
;
3040 entry
->u
.fin
.idle
= oft
->fin_idle_timeout
;
3041 entry
->u
.fin
.hard
= oft
->fin_hard_timeout
;
3047 xlate_sample_action(struct xlate_ctx
*ctx
,
3048 const struct ofpact_sample
*os
)
3050 union user_action_cookie cookie
;
3051 /* Scale the probability from 16-bit to 32-bit while representing
3052 * the same percentage. */
3053 uint32_t probability
= (os
->probability
<< 16) | os
->probability
;
3055 if (!ctx
->xbridge
->variable_length_userdata
) {
3056 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3058 VLOG_ERR_RL(&rl
, "ignoring NXAST_SAMPLE action because datapath "
3059 "lacks support (needs Linux 3.10+ or kernel module from "
3064 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
3065 &ctx
->xout
->odp_actions
,
3068 compose_flow_sample_cookie(os
->probability
, os
->collector_set_id
,
3069 os
->obs_domain_id
, os
->obs_point_id
, &cookie
);
3070 compose_sample_action(ctx
->xbridge
, &ctx
->xout
->odp_actions
, &ctx
->xin
->flow
,
3071 probability
, &cookie
, sizeof cookie
.flow_sample
);
3075 may_receive(const struct xport
*xport
, struct xlate_ctx
*ctx
)
3077 if (xport
->config
& (is_stp(&ctx
->xin
->flow
)
3078 ? OFPUTIL_PC_NO_RECV_STP
3079 : OFPUTIL_PC_NO_RECV
)) {
3083 /* Only drop packets here if both forwarding and learning are
3084 * disabled. If just learning is enabled, we need to have
3085 * OFPP_NORMAL and the learning action have a look at the packet
3086 * before we can drop it. */
3087 if (!xport_stp_forward_state(xport
) && !xport_stp_learn_state(xport
)) {
3095 xlate_write_actions(struct xlate_ctx
*ctx
, const struct ofpact
*a
)
3097 struct ofpact_nest
*on
= ofpact_get_WRITE_ACTIONS(a
);
3098 ofpbuf_put(&ctx
->action_set
, on
->actions
, ofpact_nest_get_action_len(on
));
3099 ofpact_pad(&ctx
->action_set
);
3103 xlate_action_set(struct xlate_ctx
*ctx
)
3105 uint64_t action_list_stub
[1024 / 64];
3106 struct ofpbuf action_list
;
3108 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
3109 ofpacts_execute_action_set(&action_list
, &ctx
->action_set
);
3110 do_xlate_actions(ofpbuf_data(&action_list
), ofpbuf_size(&action_list
), ctx
);
3111 ofpbuf_uninit(&action_list
);
3115 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
3116 struct xlate_ctx
*ctx
)
3118 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3119 struct flow
*flow
= &ctx
->xin
->flow
;
3120 const struct ofpact
*a
;
3122 /* dl_type already in the mask, not set below. */
3124 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
3125 struct ofpact_controller
*controller
;
3126 const struct ofpact_metadata
*metadata
;
3127 const struct ofpact_set_field
*set_field
;
3128 const struct mf_field
*mf
;
3136 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
3137 ofpact_get_OUTPUT(a
)->max_len
, true);
3141 if (xlate_group_action(ctx
, ofpact_get_GROUP(a
)->group_id
)) {
3146 case OFPACT_CONTROLLER
:
3147 controller
= ofpact_get_CONTROLLER(a
);
3148 execute_controller_action(ctx
, controller
->max_len
,
3150 controller
->controller_id
);
3153 case OFPACT_ENQUEUE
:
3154 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
3157 case OFPACT_SET_VLAN_VID
:
3158 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
3159 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
3160 ofpact_get_SET_VLAN_VID(a
)->push_vlan_if_needed
) {
3161 flow
->vlan_tci
&= ~htons(VLAN_VID_MASK
);
3162 flow
->vlan_tci
|= (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
3167 case OFPACT_SET_VLAN_PCP
:
3168 wc
->masks
.vlan_tci
|= htons(VLAN_PCP_MASK
| VLAN_CFI
);
3169 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
3170 ofpact_get_SET_VLAN_PCP(a
)->push_vlan_if_needed
) {
3171 flow
->vlan_tci
&= ~htons(VLAN_PCP_MASK
);
3172 flow
->vlan_tci
|= htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
3173 << VLAN_PCP_SHIFT
) | VLAN_CFI
);
3177 case OFPACT_STRIP_VLAN
:
3178 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
3179 flow
->vlan_tci
= htons(0);
3182 case OFPACT_PUSH_VLAN
:
3183 /* XXX 802.1AD(QinQ) */
3184 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
3185 flow
->vlan_tci
= htons(VLAN_CFI
);
3188 case OFPACT_SET_ETH_SRC
:
3189 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
3190 memcpy(flow
->dl_src
, ofpact_get_SET_ETH_SRC(a
)->mac
, ETH_ADDR_LEN
);
3193 case OFPACT_SET_ETH_DST
:
3194 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
3195 memcpy(flow
->dl_dst
, ofpact_get_SET_ETH_DST(a
)->mac
, ETH_ADDR_LEN
);
3198 case OFPACT_SET_IPV4_SRC
:
3199 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
3200 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
3201 flow
->nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
3205 case OFPACT_SET_IPV4_DST
:
3206 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
3207 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
3208 flow
->nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
3212 case OFPACT_SET_IP_DSCP
:
3213 if (is_ip_any(flow
)) {
3214 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
3215 flow
->nw_tos
&= ~IP_DSCP_MASK
;
3216 flow
->nw_tos
|= ofpact_get_SET_IP_DSCP(a
)->dscp
;
3220 case OFPACT_SET_IP_ECN
:
3221 if (is_ip_any(flow
)) {
3222 wc
->masks
.nw_tos
|= IP_ECN_MASK
;
3223 flow
->nw_tos
&= ~IP_ECN_MASK
;
3224 flow
->nw_tos
|= ofpact_get_SET_IP_ECN(a
)->ecn
;
3228 case OFPACT_SET_IP_TTL
:
3229 if (is_ip_any(flow
)) {
3230 wc
->masks
.nw_ttl
= 0xff;
3231 flow
->nw_ttl
= ofpact_get_SET_IP_TTL(a
)->ttl
;
3235 case OFPACT_SET_L4_SRC_PORT
:
3236 if (is_ip_any(flow
)) {
3237 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3238 memset(&wc
->masks
.tp_src
, 0xff, sizeof wc
->masks
.tp_src
);
3239 flow
->tp_src
= htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
3243 case OFPACT_SET_L4_DST_PORT
:
3244 if (is_ip_any(flow
)) {
3245 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3246 memset(&wc
->masks
.tp_dst
, 0xff, sizeof wc
->masks
.tp_dst
);
3247 flow
->tp_dst
= htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
3251 case OFPACT_RESUBMIT
:
3252 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
3255 case OFPACT_SET_TUNNEL
:
3256 flow
->tunnel
.tun_id
= htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
3259 case OFPACT_SET_QUEUE
:
3260 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
3263 case OFPACT_POP_QUEUE
:
3264 flow
->skb_priority
= ctx
->orig_skb_priority
;
3267 case OFPACT_REG_MOVE
:
3268 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), flow
, wc
);
3271 case OFPACT_REG_LOAD
:
3272 nxm_execute_reg_load(ofpact_get_REG_LOAD(a
), flow
, wc
);
3275 case OFPACT_SET_FIELD
:
3276 set_field
= ofpact_get_SET_FIELD(a
);
3277 mf
= set_field
->field
;
3279 /* Set field action only ever overwrites packet's outermost
3280 * applicable header fields. Do nothing if no header exists. */
3281 if (mf
->id
== MFF_VLAN_VID
) {
3282 wc
->masks
.vlan_tci
|= htons(VLAN_CFI
);
3283 if (!(flow
->vlan_tci
& htons(VLAN_CFI
))) {
3286 } else if ((mf
->id
== MFF_MPLS_LABEL
|| mf
->id
== MFF_MPLS_TC
)
3287 /* 'dl_type' is already unwildcarded. */
3288 && !eth_type_mpls(flow
->dl_type
)) {
3292 mf_mask_field_and_prereqs(mf
, &wc
->masks
);
3293 mf_set_flow_value(mf
, &set_field
->value
, flow
);
3296 case OFPACT_STACK_PUSH
:
3297 nxm_execute_stack_push(ofpact_get_STACK_PUSH(a
), flow
, wc
,
3301 case OFPACT_STACK_POP
:
3302 nxm_execute_stack_pop(ofpact_get_STACK_POP(a
), flow
, wc
,
3306 case OFPACT_PUSH_MPLS
:
3307 compose_mpls_push_action(ctx
, ofpact_get_PUSH_MPLS(a
));
3310 case OFPACT_POP_MPLS
:
3311 compose_mpls_pop_action(ctx
, ofpact_get_POP_MPLS(a
)->ethertype
);
3314 case OFPACT_SET_MPLS_LABEL
:
3315 compose_set_mpls_label_action(
3316 ctx
, ofpact_get_SET_MPLS_LABEL(a
)->label
);
3319 case OFPACT_SET_MPLS_TC
:
3320 compose_set_mpls_tc_action(ctx
, ofpact_get_SET_MPLS_TC(a
)->tc
);
3323 case OFPACT_SET_MPLS_TTL
:
3324 compose_set_mpls_ttl_action(ctx
, ofpact_get_SET_MPLS_TTL(a
)->ttl
);
3327 case OFPACT_DEC_MPLS_TTL
:
3328 if (compose_dec_mpls_ttl_action(ctx
)) {
3333 case OFPACT_DEC_TTL
:
3334 wc
->masks
.nw_ttl
= 0xff;
3335 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
3341 /* Nothing to do. */
3344 case OFPACT_MULTIPATH
:
3345 multipath_execute(ofpact_get_MULTIPATH(a
), flow
, wc
);
3349 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
3352 case OFPACT_OUTPUT_REG
:
3353 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
3357 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
3364 case OFPACT_FIN_TIMEOUT
:
3365 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3366 ctx
->xout
->has_fin_timeout
= true;
3367 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
3370 case OFPACT_CLEAR_ACTIONS
:
3371 ofpbuf_clear(&ctx
->action_set
);
3374 case OFPACT_WRITE_ACTIONS
:
3375 xlate_write_actions(ctx
, a
);
3378 case OFPACT_WRITE_METADATA
:
3379 metadata
= ofpact_get_WRITE_METADATA(a
);
3380 flow
->metadata
&= ~metadata
->mask
;
3381 flow
->metadata
|= metadata
->metadata
& metadata
->mask
;
3385 /* Not implemented yet. */
3388 case OFPACT_GOTO_TABLE
: {
3389 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
3391 ovs_assert(ctx
->table_id
< ogt
->table_id
);
3392 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
3393 ogt
->table_id
, true, true);
3398 xlate_sample_action(ctx
, ofpact_get_SAMPLE(a
));
3405 xlate_in_init(struct xlate_in
*xin
, struct ofproto_dpif
*ofproto
,
3406 const struct flow
*flow
, struct rule_dpif
*rule
,
3407 uint16_t tcp_flags
, const struct ofpbuf
*packet
)
3409 xin
->ofproto
= ofproto
;
3411 xin
->packet
= packet
;
3412 xin
->may_learn
= packet
!= NULL
;
3415 xin
->ofpacts
= NULL
;
3416 xin
->ofpacts_len
= 0;
3417 xin
->tcp_flags
= tcp_flags
;
3418 xin
->resubmit_hook
= NULL
;
3419 xin
->report_hook
= NULL
;
3420 xin
->resubmit_stats
= NULL
;
3421 xin
->skip_wildcards
= false;
3425 xlate_out_uninit(struct xlate_out
*xout
)
3428 ofpbuf_uninit(&xout
->odp_actions
);
3432 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
3433 * into datapath actions, using 'ctx', and discards the datapath actions. */
3435 xlate_actions_for_side_effects(struct xlate_in
*xin
)
3437 struct xlate_out xout
;
3439 xlate_actions(xin
, &xout
);
3440 xlate_out_uninit(&xout
);
3444 xlate_report(struct xlate_ctx
*ctx
, const char *s
)
3446 if (ctx
->xin
->report_hook
) {
3447 ctx
->xin
->report_hook(ctx
->xin
, s
, ctx
->recurse
);
3452 xlate_out_copy(struct xlate_out
*dst
, const struct xlate_out
*src
)
3455 dst
->slow
= src
->slow
;
3456 dst
->has_learn
= src
->has_learn
;
3457 dst
->has_normal
= src
->has_normal
;
3458 dst
->has_fin_timeout
= src
->has_fin_timeout
;
3459 dst
->nf_output_iface
= src
->nf_output_iface
;
3460 dst
->mirrors
= src
->mirrors
;
3462 ofpbuf_use_stub(&dst
->odp_actions
, dst
->odp_actions_stub
,
3463 sizeof dst
->odp_actions_stub
);
3464 ofpbuf_put(&dst
->odp_actions
, ofpbuf_data(&src
->odp_actions
),
3465 ofpbuf_size(&src
->odp_actions
));
3468 static struct skb_priority_to_dscp
*
3469 get_skb_priority(const struct xport
*xport
, uint32_t skb_priority
)
3471 struct skb_priority_to_dscp
*pdscp
;
3474 hash
= hash_int(skb_priority
, 0);
3475 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &xport
->skb_priorities
) {
3476 if (pdscp
->skb_priority
== skb_priority
) {
3484 dscp_from_skb_priority(const struct xport
*xport
, uint32_t skb_priority
,
3487 struct skb_priority_to_dscp
*pdscp
= get_skb_priority(xport
, skb_priority
);
3488 *dscp
= pdscp
? pdscp
->dscp
: 0;
3489 return pdscp
!= NULL
;
3493 clear_skb_priorities(struct xport
*xport
)
3495 struct skb_priority_to_dscp
*pdscp
, *next
;
3497 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &xport
->skb_priorities
) {
3498 hmap_remove(&xport
->skb_priorities
, &pdscp
->hmap_node
);
3504 actions_output_to_local_port(const struct xlate_ctx
*ctx
)
3506 odp_port_t local_odp_port
= ofp_port_to_odp_port(ctx
->xbridge
, OFPP_LOCAL
);
3507 const struct nlattr
*a
;
3510 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, ofpbuf_data(&ctx
->xout
->odp_actions
),
3511 ofpbuf_size(&ctx
->xout
->odp_actions
)) {
3512 if (nl_attr_type(a
) == OVS_ACTION_ATTR_OUTPUT
3513 && nl_attr_get_odp_port(a
) == local_odp_port
) {
3520 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
3521 * into datapath actions in 'odp_actions', using 'ctx'.
3523 * The caller must take responsibility for eventually freeing 'xout', with
3524 * xlate_out_uninit(). */
3526 xlate_actions(struct xlate_in
*xin
, struct xlate_out
*xout
)
3528 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
3529 struct flow_wildcards
*wc
= &xout
->wc
;
3530 struct flow
*flow
= &xin
->flow
;
3531 struct rule_dpif
*rule
= NULL
;
3533 const struct rule_actions
*actions
= NULL
;
3534 enum slow_path_reason special
;
3535 const struct ofpact
*ofpacts
;
3536 struct xport
*in_port
;
3537 struct flow orig_flow
;
3538 struct xlate_ctx ctx
;
3543 COVERAGE_INC(xlate_actions
);
3545 /* Flow initialization rules:
3546 * - 'base_flow' must match the kernel's view of the packet at the
3547 * time that action processing starts. 'flow' represents any
3548 * transformations we wish to make through actions.
3549 * - By default 'base_flow' and 'flow' are the same since the input
3550 * packet matches the output before any actions are applied.
3551 * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
3552 * of the received packet as seen by the kernel. If we later output
3553 * to another device without any modifications this will cause us to
3554 * insert a new tag since the original one was stripped off by the
3556 * - Tunnel metadata as received is retained in 'flow'. This allows
3557 * tunnel metadata matching also in later tables.
3558 * Since a kernel action for setting the tunnel metadata will only be
3559 * generated with actual tunnel output, changing the tunnel metadata
3560 * values in 'flow' (such as tun_id) will only have effect with a later
3561 * tunnel output action.
3562 * - Tunnel 'base_flow' is completely cleared since that is what the
3563 * kernel does. If we wish to maintain the original values an action
3564 * needs to be generated. */
3569 ctx
.xout
->has_learn
= false;
3570 ctx
.xout
->has_normal
= false;
3571 ctx
.xout
->has_fin_timeout
= false;
3572 ctx
.xout
->nf_output_iface
= NF_OUT_DROP
;
3573 ctx
.xout
->mirrors
= 0;
3574 ofpbuf_use_stub(&ctx
.xout
->odp_actions
, ctx
.xout
->odp_actions_stub
,
3575 sizeof ctx
.xout
->odp_actions_stub
);
3576 ofpbuf_reserve(&ctx
.xout
->odp_actions
, NL_A_U32_SIZE
);
3578 ctx
.xbridge
= xbridge_lookup(xcfg
, xin
->ofproto
);
3583 ctx
.rule
= xin
->rule
;
3585 ctx
.base_flow
= *flow
;
3586 memset(&ctx
.base_flow
.tunnel
, 0, sizeof ctx
.base_flow
.tunnel
);
3587 ctx
.orig_tunnel_ip_dst
= flow
->tunnel
.ip_dst
;
3589 flow_wildcards_init_catchall(wc
);
3590 memset(&wc
->masks
.in_port
, 0xff, sizeof wc
->masks
.in_port
);
3591 memset(&wc
->masks
.skb_priority
, 0xff, sizeof wc
->masks
.skb_priority
);
3592 memset(&wc
->masks
.dl_type
, 0xff, sizeof wc
->masks
.dl_type
);
3593 if (is_ip_any(flow
)) {
3594 wc
->masks
.nw_frag
|= FLOW_NW_FRAG_MASK
;
3596 is_icmp
= is_icmpv4(flow
) || is_icmpv6(flow
);
3598 tnl_may_send
= tnl_xlate_init(&ctx
.base_flow
, flow
, wc
);
3599 if (ctx
.xbridge
->netflow
) {
3600 netflow_mask_wc(flow
, wc
);
3605 ctx
.in_group
= false;
3606 ctx
.orig_skb_priority
= flow
->skb_priority
;
3609 ctx
.use_recirc
= false;
3611 if (!xin
->ofpacts
&& !ctx
.rule
) {
3612 ctx
.table_id
= rule_dpif_lookup(ctx
.xbridge
->ofproto
, flow
,
3613 !xin
->skip_wildcards
? wc
: NULL
,
3614 &rule
, ctx
.xin
->xcache
!= NULL
,
3615 ctx
.xin
->resubmit_stats
);
3616 if (ctx
.xin
->resubmit_stats
) {
3617 rule_dpif_credit_stats(rule
, ctx
.xin
->resubmit_stats
);
3619 if (ctx
.xin
->xcache
) {
3620 struct xc_entry
*entry
;
3622 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_RULE
);
3623 entry
->u
.rule
= rule
;
3627 xout
->fail_open
= ctx
.rule
&& rule_dpif_is_fail_open(ctx
.rule
);
3630 ofpacts
= xin
->ofpacts
;
3631 ofpacts_len
= xin
->ofpacts_len
;
3632 } else if (ctx
.rule
) {
3633 actions
= rule_dpif_get_actions(ctx
.rule
);
3634 ofpacts
= actions
->ofpacts
;
3635 ofpacts_len
= actions
->ofpacts_len
;
3640 ofpbuf_use_stub(&ctx
.stack
, ctx
.init_stack
, sizeof ctx
.init_stack
);
3641 ofpbuf_use_stub(&ctx
.action_set
,
3642 ctx
.action_set_stub
, sizeof ctx
.action_set_stub
);
3644 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
3645 /* Do this conditionally because the copy is expensive enough that it
3646 * shows up in profiles. */
3650 if (flow
->nw_frag
& FLOW_NW_FRAG_ANY
) {
3651 switch (ctx
.xbridge
->frag
) {
3652 case OFPC_FRAG_NORMAL
:
3653 /* We must pretend that transport ports are unavailable. */
3654 flow
->tp_src
= ctx
.base_flow
.tp_src
= htons(0);
3655 flow
->tp_dst
= ctx
.base_flow
.tp_dst
= htons(0);
3658 case OFPC_FRAG_DROP
:
3661 case OFPC_FRAG_REASM
:
3664 case OFPC_FRAG_NX_MATCH
:
3665 /* Nothing to do. */
3668 case OFPC_INVALID_TTL_TO_CONTROLLER
:
3673 in_port
= get_ofp_port(ctx
.xbridge
, flow
->in_port
.ofp_port
);
3674 if (in_port
&& in_port
->is_tunnel
) {
3675 if (ctx
.xin
->resubmit_stats
) {
3676 netdev_vport_inc_rx(in_port
->netdev
, ctx
.xin
->resubmit_stats
);
3678 bfd_account_rx(in_port
->bfd
, ctx
.xin
->resubmit_stats
);
3681 if (ctx
.xin
->xcache
) {
3682 struct xc_entry
*entry
;
3684 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETDEV
);
3685 entry
->u
.dev
.rx
= netdev_ref(in_port
->netdev
);
3686 entry
->u
.dev
.bfd
= bfd_ref(in_port
->bfd
);
3690 special
= process_special(&ctx
, flow
, in_port
, ctx
.xin
->packet
);
3692 ctx
.xout
->slow
|= special
;
3694 size_t sample_actions_len
;
3696 if (flow
->in_port
.ofp_port
3697 != vsp_realdev_to_vlandev(ctx
.xbridge
->ofproto
,
3698 flow
->in_port
.ofp_port
,
3700 ctx
.base_flow
.vlan_tci
= 0;
3703 add_sflow_action(&ctx
);
3704 add_ipfix_action(&ctx
);
3705 sample_actions_len
= ofpbuf_size(&ctx
.xout
->odp_actions
);
3707 if (tnl_may_send
&& (!in_port
|| may_receive(in_port
, &ctx
))) {
3708 do_xlate_actions(ofpacts
, ofpacts_len
, &ctx
);
3710 /* We've let OFPP_NORMAL and the learning action look at the
3711 * packet, so drop it now if forwarding is disabled. */
3712 if (in_port
&& !xport_stp_forward_state(in_port
)) {
3713 ofpbuf_set_size(&ctx
.xout
->odp_actions
, sample_actions_len
);
3717 if (ofpbuf_size(&ctx
.action_set
)) {
3718 xlate_action_set(&ctx
);
3721 if (ctx
.xbridge
->has_in_band
3722 && in_band_must_output_to_local_port(flow
)
3723 && !actions_output_to_local_port(&ctx
)) {
3724 compose_output_action(&ctx
, OFPP_LOCAL
);
3727 fix_sflow_action(&ctx
);
3729 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
3730 add_mirror_actions(&ctx
, &orig_flow
);
3734 if (nl_attr_oversized(ofpbuf_size(&ctx
.xout
->odp_actions
))) {
3735 /* These datapath actions are too big for a Netlink attribute, so we
3736 * can't hand them to the kernel directly. dpif_execute() can execute
3737 * them one by one with help, so just mark the result as SLOW_ACTION to
3738 * prevent the flow from being installed. */
3739 COVERAGE_INC(xlate_actions_oversize
);
3740 ctx
.xout
->slow
|= SLOW_ACTION
;
3743 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
3744 if (ctx
.xin
->resubmit_stats
) {
3745 mirror_update_stats(ctx
.xbridge
->mbridge
, xout
->mirrors
,
3746 ctx
.xin
->resubmit_stats
->n_packets
,
3747 ctx
.xin
->resubmit_stats
->n_bytes
);
3749 if (ctx
.xin
->xcache
) {
3750 struct xc_entry
*entry
;
3752 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_MIRROR
);
3753 entry
->u
.mirror
.mbridge
= mbridge_ref(ctx
.xbridge
->mbridge
);
3754 entry
->u
.mirror
.mirrors
= xout
->mirrors
;
3758 if (ctx
.xbridge
->netflow
) {
3759 /* Only update netflow if we don't have controller flow. We don't
3760 * report NetFlow expiration messages for such facets because they
3761 * are just part of the control logic for the network, not real
3763 if (ofpacts_len
== 0
3764 || ofpacts
->type
!= OFPACT_CONTROLLER
3765 || ofpact_next(ofpacts
) < ofpact_end(ofpacts
, ofpacts_len
)) {
3766 if (ctx
.xin
->resubmit_stats
) {
3767 netflow_flow_update(ctx
.xbridge
->netflow
, flow
,
3768 xout
->nf_output_iface
,
3769 ctx
.xin
->resubmit_stats
);
3771 if (ctx
.xin
->xcache
) {
3772 struct xc_entry
*entry
;
3774 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETFLOW
);
3775 entry
->u
.nf
.netflow
= netflow_ref(ctx
.xbridge
->netflow
);
3776 entry
->u
.nf
.flow
= xmemdup(flow
, sizeof *flow
);
3777 entry
->u
.nf
.iface
= xout
->nf_output_iface
;
3782 ofpbuf_uninit(&ctx
.stack
);
3783 ofpbuf_uninit(&ctx
.action_set
);
3785 /* Clear the metadata and register wildcard masks, because we won't
3786 * use non-header fields as part of the cache. */
3787 flow_wildcards_clear_non_packet_fields(wc
);
3789 /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses
3790 * the low 8 bits of the 16-bit tp_src and tp_dst members to represent
3791 * these fields. The datapath interface, on the other hand, represents
3792 * them with just 8 bits each. This means that if the high 8 bits of the
3793 * masks for these fields somehow become set, then they will get chopped
3794 * off by a round trip through the datapath, and revalidation will spot
3795 * that as an inconsistency and delete the flow. Avoid the problem here by
3796 * making sure that only the low 8 bits of either field can be unwildcarded
3800 wc
->masks
.tp_src
&= htons(UINT8_MAX
);
3801 wc
->masks
.tp_dst
&= htons(UINT8_MAX
);
3805 /* Sends 'packet' out 'ofport'.
3806 * May modify 'packet'.
3807 * Returns 0 if successful, otherwise a positive errno value. */
3809 xlate_send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
3811 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
3812 struct xport
*xport
;
3813 struct ofpact_output output
;
3816 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
3817 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
3818 flow_extract(packet
, NULL
, &flow
);
3819 flow
.in_port
.ofp_port
= OFPP_NONE
;
3821 xport
= xport_lookup(xcfg
, ofport
);
3825 output
.port
= xport
->ofp_port
;
3828 return ofproto_dpif_execute_actions(xport
->xbridge
->ofproto
, &flow
, NULL
,
3829 &output
.ofpact
, sizeof output
,
3833 struct xlate_cache
*
3834 xlate_cache_new(void)
3836 struct xlate_cache
*xcache
= xmalloc(sizeof *xcache
);
3838 ofpbuf_init(&xcache
->entries
, 512);
3842 static struct xc_entry
*
3843 xlate_cache_add_entry(struct xlate_cache
*xcache
, enum xc_type type
)
3845 struct xc_entry
*entry
;
3847 entry
= ofpbuf_put_zeros(&xcache
->entries
, sizeof *entry
);
3854 xlate_cache_netdev(struct xc_entry
*entry
, const struct dpif_flow_stats
*stats
)
3856 if (entry
->u
.dev
.tx
) {
3857 netdev_vport_inc_tx(entry
->u
.dev
.tx
, stats
);
3859 if (entry
->u
.dev
.rx
) {
3860 netdev_vport_inc_rx(entry
->u
.dev
.rx
, stats
);
3862 if (entry
->u
.dev
.bfd
) {
3863 bfd_account_rx(entry
->u
.dev
.bfd
, stats
);
3868 xlate_cache_normal(struct ofproto_dpif
*ofproto
, struct flow
*flow
, int vlan
)
3870 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
3871 struct xbridge
*xbridge
;
3872 struct xbundle
*xbundle
;
3873 struct flow_wildcards wc
;
3875 xbridge
= xbridge_lookup(xcfg
, ofproto
);
3880 xbundle
= lookup_input_bundle(xbridge
, flow
->in_port
.ofp_port
, false,
3886 update_learning_table(xbridge
, flow
, &wc
, vlan
, xbundle
);
3889 /* Push stats and perform side effects of flow translation. */
3891 xlate_push_stats(struct xlate_cache
*xcache
, bool may_learn
,
3892 const struct dpif_flow_stats
*stats
)
3894 struct xc_entry
*entry
;
3895 struct ofpbuf entries
= xcache
->entries
;
3897 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
3898 switch (entry
->type
) {
3900 rule_dpif_credit_stats(entry
->u
.rule
, stats
);
3903 bond_account(entry
->u
.bond
.bond
, entry
->u
.bond
.flow
,
3904 entry
->u
.bond
.vid
, stats
->n_bytes
);
3907 xlate_cache_netdev(entry
, stats
);
3910 netflow_flow_update(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
,
3911 entry
->u
.nf
.iface
, stats
);
3914 mirror_update_stats(entry
->u
.mirror
.mbridge
,
3915 entry
->u
.mirror
.mirrors
,
3916 stats
->n_packets
, stats
->n_bytes
);
3920 ofproto_dpif_flow_mod(entry
->u
.learn
.ofproto
,
3925 xlate_cache_normal(entry
->u
.normal
.ofproto
, entry
->u
.normal
.flow
,
3926 entry
->u
.normal
.vlan
);
3928 case XC_FIN_TIMEOUT
:
3929 xlate_fin_timeout__(entry
->u
.fin
.rule
, stats
->tcp_flags
,
3930 entry
->u
.fin
.idle
, entry
->u
.fin
.hard
);
3933 group_dpif_credit_stats(entry
->u
.group
.group
, entry
->u
.group
.bucket
,
3943 xlate_dev_unref(struct xc_entry
*entry
)
3945 if (entry
->u
.dev
.tx
) {
3946 netdev_close(entry
->u
.dev
.tx
);
3948 if (entry
->u
.dev
.rx
) {
3949 netdev_close(entry
->u
.dev
.rx
);
3951 if (entry
->u
.dev
.bfd
) {
3952 bfd_unref(entry
->u
.dev
.bfd
);
3957 xlate_cache_clear_netflow(struct netflow
*netflow
, struct flow
*flow
)
3959 netflow_flow_clear(netflow
, flow
);
3960 netflow_unref(netflow
);
3965 xlate_cache_clear(struct xlate_cache
*xcache
)
3967 struct xc_entry
*entry
;
3968 struct ofpbuf entries
;
3974 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
3975 switch (entry
->type
) {
3977 rule_dpif_unref(entry
->u
.rule
);
3980 free(entry
->u
.bond
.flow
);
3981 bond_unref(entry
->u
.bond
.bond
);
3984 xlate_dev_unref(entry
);
3987 xlate_cache_clear_netflow(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
);
3990 mbridge_unref(entry
->u
.mirror
.mbridge
);
3993 free(entry
->u
.learn
.fm
);
3994 ofpbuf_delete(entry
->u
.learn
.ofpacts
);
3997 free(entry
->u
.normal
.flow
);
3999 case XC_FIN_TIMEOUT
:
4000 /* 'u.fin.rule' is always already held as a XC_RULE, which
4001 * has already released it's reference above. */
4004 group_dpif_unref(entry
->u
.group
.group
);
4011 ofpbuf_clear(&xcache
->entries
);
4015 xlate_cache_delete(struct xlate_cache
*xcache
)
4017 xlate_cache_clear(xcache
);
4018 ofpbuf_uninit(&xcache
->entries
);